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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
4a94e368 | 3 | Copyright (C) 1986-2022 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" |
d322d6d6 | 59 | #include "gdbsupport/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" |
0f8e2034 | 70 | #include "cli/cli-decode.h" |
d3ce09f5 | 71 | |
1042e4c0 | 72 | /* readline include files */ |
073bbbb0 | 73 | #include "readline/tilde.h" |
1042e4c0 SS |
74 | |
75 | /* readline defines this. */ | |
76 | #undef savestring | |
77 | ||
034dad6f | 78 | #include "mi/mi-common.h" |
6dddc817 | 79 | #include "extension.h" |
325fac50 | 80 | #include <algorithm> |
5ed8105e | 81 | #include "progspace-and-thread.h" |
268a13a5 TT |
82 | #include "gdbsupport/array-view.h" |
83 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 84 | |
4a64f543 | 85 | /* Prototypes for local functions. */ |
c906108c | 86 | |
896b6bda | 87 | static void map_breakpoint_numbers (const char *, |
48649e1b | 88 | gdb::function_view<void (breakpoint *)>); |
c906108c | 89 | |
348d480f PA |
90 | static void breakpoint_re_set_default (struct breakpoint *); |
91 | ||
f00aae0f | 92 | static void |
626d2320 | 93 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
94 | struct linespec_result *canonical, |
95 | enum bptype type_wanted); | |
983af33b SDJ |
96 | |
97 | static void create_breakpoints_sal_default (struct gdbarch *, | |
98 | struct linespec_result *, | |
e1e01040 PA |
99 | gdb::unique_xmalloc_ptr<char>, |
100 | gdb::unique_xmalloc_ptr<char>, | |
101 | enum bptype, | |
983af33b SDJ |
102 | enum bpdisp, int, int, |
103 | int, | |
104 | const struct breakpoint_ops *, | |
44f238bb | 105 | int, int, int, unsigned); |
983af33b | 106 | |
6c5b2ebe | 107 | static std::vector<symtab_and_line> decode_location_default |
626d2320 | 108 | (struct breakpoint *b, struct event_location *location, |
6c5b2ebe | 109 | struct program_space *search_pspace); |
983af33b | 110 | |
a6535de1 TT |
111 | static int can_use_hardware_watchpoint |
112 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 113 | |
a14ed312 | 114 | static void mention (struct breakpoint *); |
c906108c | 115 | |
348d480f PA |
116 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
117 | enum bptype, | |
c0a91b2b | 118 | const struct breakpoint_ops *); |
3742cc8b YQ |
119 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
120 | const struct symtab_and_line *); | |
121 | ||
4a64f543 MS |
122 | /* This function is used in gdbtk sources and thus can not be made |
123 | static. */ | |
cd0f67f3 SM |
124 | static struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
125 | struct symtab_and_line, | |
126 | enum bptype, | |
127 | const struct breakpoint_ops *); | |
c906108c | 128 | |
06edf0c0 PA |
129 | static struct breakpoint * |
130 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
131 | enum bptype type, | |
a1aa2221 LM |
132 | const struct breakpoint_ops *ops, |
133 | int loc_enabled); | |
06edf0c0 | 134 | |
76897487 KB |
135 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
136 | ||
a6d9a66e UW |
137 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
138 | CORE_ADDR bpaddr, | |
dda83cd7 | 139 | enum bptype bptype); |
76897487 | 140 | |
6c95b8df PA |
141 | static void describe_other_breakpoints (struct gdbarch *, |
142 | struct program_space *, CORE_ADDR, | |
5af949e3 | 143 | struct obj_section *, int); |
c906108c | 144 | |
85d721b8 PA |
145 | static int watchpoint_locations_match (struct bp_location *loc1, |
146 | struct bp_location *loc2); | |
147 | ||
7f32a4d5 PA |
148 | static int breakpoint_locations_match (struct bp_location *loc1, |
149 | struct bp_location *loc2, | |
150 | bool sw_hw_bps_match = false); | |
151 | ||
f1310107 | 152 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 153 | const struct address_space *aspace, |
f1310107 TJB |
154 | CORE_ADDR addr); |
155 | ||
d35ae833 | 156 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 157 | const address_space *, |
d35ae833 PA |
158 | CORE_ADDR, int); |
159 | ||
834c0d03 | 160 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 161 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 162 | |
313f3b21 | 163 | static enum print_stop_action print_bp_stop_message (bpstat *bs); |
c906108c | 164 | |
a14ed312 | 165 | static int hw_breakpoint_used_count (void); |
c906108c | 166 | |
a1398e0c PA |
167 | static int hw_watchpoint_use_count (struct breakpoint *); |
168 | ||
169 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
170 | enum bptype type, | |
171 | int *other_type_used); | |
c906108c | 172 | |
816338b5 SS |
173 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
174 | int count); | |
c906108c | 175 | |
f431efe5 | 176 | static void decref_bp_location (struct bp_location **loc); |
fe3f5fa8 | 177 | |
39d61571 | 178 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 179 | |
44702360 PA |
180 | /* update_global_location_list's modes of operation wrt to whether to |
181 | insert locations now. */ | |
182 | enum ugll_insert_mode | |
183 | { | |
184 | /* Don't insert any breakpoint locations into the inferior, only | |
185 | remove already-inserted locations that no longer should be | |
186 | inserted. Functions that delete a breakpoint or breakpoints | |
187 | should specify this mode, so that deleting a breakpoint doesn't | |
188 | have the side effect of inserting the locations of other | |
189 | breakpoints that are marked not-inserted, but should_be_inserted | |
190 | returns true on them. | |
191 | ||
192 | This behavior is useful is situations close to tear-down -- e.g., | |
193 | after an exec, while the target still has execution, but | |
194 | breakpoint shadows of the previous executable image should *NOT* | |
195 | be restored to the new image; or before detaching, where the | |
196 | target still has execution and wants to delete breakpoints from | |
197 | GDB's lists, and all breakpoints had already been removed from | |
198 | the inferior. */ | |
199 | UGLL_DONT_INSERT, | |
200 | ||
a25a5a45 PA |
201 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
202 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
203 | UGLL_MAY_INSERT, |
204 | ||
a25a5a45 PA |
205 | /* Insert locations now, irrespective of |
206 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
207 | stopped right now, and the user did "continue". We need to | |
208 | insert breakpoints _before_ resuming the target, but | |
209 | UGLL_MAY_INSERT wouldn't insert them, because | |
210 | breakpoints_should_be_inserted_now returns false at that point, | |
211 | as no thread is running yet. */ | |
04086b45 | 212 | UGLL_INSERT |
44702360 PA |
213 | }; |
214 | ||
215 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 216 | |
44702360 | 217 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 218 | |
74960c60 | 219 | static void insert_breakpoint_locations (void); |
a5606eee | 220 | |
0b39b52e | 221 | static void trace_pass_command (const char *, int); |
1042e4c0 | 222 | |
558a9d82 YQ |
223 | static void set_tracepoint_count (int num); |
224 | ||
f2478a7e | 225 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 226 | |
983af33b SDJ |
227 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
228 | otherwise. */ | |
229 | ||
230 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 231 | |
2060206e PA |
232 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
233 | that are implemented on top of software or hardware breakpoints | |
234 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
235 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
236 | ||
237 | /* Internal breakpoints class type. */ | |
06edf0c0 | 238 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
239 | |
240 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
241 | static struct breakpoint_ops momentary_breakpoint_ops; |
242 | ||
2060206e PA |
243 | /* The breakpoint_ops structure to be used in regular user created |
244 | breakpoints. */ | |
245 | struct breakpoint_ops bkpt_breakpoint_ops; | |
246 | ||
55aa24fb SDJ |
247 | /* Breakpoints set on probes. */ |
248 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
249 | ||
bac7c5cf GB |
250 | /* Tracepoints set on probes. */ |
251 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
252 | ||
e7e0cddf | 253 | /* Dynamic printf class type. */ |
c5867ab6 | 254 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 255 | |
d3ce09f5 SS |
256 | /* The style in which to perform a dynamic printf. This is a user |
257 | option because different output options have different tradeoffs; | |
258 | if GDB does the printing, there is better error handling if there | |
259 | is a problem with any of the arguments, but using an inferior | |
260 | function lets you have special-purpose printers and sending of | |
261 | output to the same place as compiled-in print functions. */ | |
262 | ||
263 | static const char dprintf_style_gdb[] = "gdb"; | |
264 | static const char dprintf_style_call[] = "call"; | |
265 | static const char dprintf_style_agent[] = "agent"; | |
266 | static const char *const dprintf_style_enums[] = { | |
267 | dprintf_style_gdb, | |
268 | dprintf_style_call, | |
269 | dprintf_style_agent, | |
270 | NULL | |
271 | }; | |
272 | static const char *dprintf_style = dprintf_style_gdb; | |
273 | ||
274 | /* The function to use for dynamic printf if the preferred style is to | |
275 | call into the inferior. The value is simply a string that is | |
276 | copied into the command, so it can be anything that GDB can | |
277 | evaluate to a callable address, not necessarily a function name. */ | |
278 | ||
e0700ba4 | 279 | static std::string dprintf_function = "printf"; |
d3ce09f5 SS |
280 | |
281 | /* The channel to use for dynamic printf if the preferred style is to | |
282 | call into the inferior; if a nonempty string, it will be passed to | |
283 | the call as the first argument, with the format string as the | |
284 | second. As with the dprintf function, this can be anything that | |
285 | GDB knows how to evaluate, so in addition to common choices like | |
286 | "stderr", this could be an app-specific expression like | |
287 | "mystreams[curlogger]". */ | |
288 | ||
e0700ba4 | 289 | static std::string dprintf_channel; |
d3ce09f5 SS |
290 | |
291 | /* True if dprintf commands should continue to operate even if GDB | |
292 | has disconnected. */ | |
491144b5 | 293 | static bool disconnected_dprintf = true; |
d3ce09f5 | 294 | |
5cea2a26 PA |
295 | struct command_line * |
296 | breakpoint_commands (struct breakpoint *b) | |
297 | { | |
d1b0a7bf | 298 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 299 | } |
3daf8fe5 | 300 | |
f3b1572e PA |
301 | /* Flag indicating that a command has proceeded the inferior past the |
302 | current breakpoint. */ | |
303 | ||
491144b5 | 304 | static bool breakpoint_proceeded; |
f3b1572e | 305 | |
956a9fb9 | 306 | const char * |
2cec12e5 AR |
307 | bpdisp_text (enum bpdisp disp) |
308 | { | |
4a64f543 MS |
309 | /* NOTE: the following values are a part of MI protocol and |
310 | represent values of 'disp' field returned when inferior stops at | |
311 | a breakpoint. */ | |
bc043ef3 | 312 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 313 | |
2cec12e5 AR |
314 | return bpdisps[(int) disp]; |
315 | } | |
c906108c | 316 | |
4a64f543 | 317 | /* Prototypes for exported functions. */ |
c906108c | 318 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 319 | if such is available. */ |
c906108c SS |
320 | static int can_use_hw_watchpoints; |
321 | ||
920d2a44 AC |
322 | static void |
323 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
324 | struct cmd_list_element *c, | |
325 | const char *value) | |
326 | { | |
6cb06a8c TT |
327 | gdb_printf (file, |
328 | _("Debugger's willingness to use " | |
329 | "watchpoint hardware is %s.\n"), | |
330 | value); | |
920d2a44 AC |
331 | } |
332 | ||
fa8d40ab JJ |
333 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
334 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 335 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
336 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
337 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
338 | static void |
339 | show_pending_break_support (struct ui_file *file, int from_tty, | |
340 | struct cmd_list_element *c, | |
341 | const char *value) | |
342 | { | |
6cb06a8c TT |
343 | gdb_printf (file, |
344 | _("Debugger's behavior regarding " | |
345 | "pending breakpoints is %s.\n"), | |
346 | value); | |
920d2a44 | 347 | } |
fa8d40ab | 348 | |
491144b5 | 349 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 350 | set with "break" but falling in read-only memory. |
491144b5 | 351 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 352 | use hardware breakpoints. */ |
491144b5 | 353 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
354 | static void |
355 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
356 | struct cmd_list_element *c, | |
357 | const char *value) | |
358 | { | |
6cb06a8c TT |
359 | gdb_printf (file, |
360 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
361 | value); | |
765dc015 VP |
362 | } |
363 | ||
a25a5a45 PA |
364 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
365 | stopped, and immediately inserts any new breakpoints as soon as | |
366 | they're created. If off (default), GDB keeps breakpoints off of | |
367 | the target as long as possible. That is, it delays inserting | |
368 | breakpoints until the next resume, and removes them again when the | |
369 | target fully stops. This is a bit safer in case GDB crashes while | |
370 | processing user input. */ | |
491144b5 | 371 | static bool always_inserted_mode = false; |
72d0e2c5 | 372 | |
33e5cbd6 | 373 | static void |
74960c60 | 374 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 375 | struct cmd_list_element *c, const char *value) |
74960c60 | 376 | { |
6cb06a8c TT |
377 | gdb_printf (file, _("Always inserted breakpoint mode is %s.\n"), |
378 | value); | |
74960c60 VP |
379 | } |
380 | ||
b57bacec PA |
381 | /* See breakpoint.h. */ |
382 | ||
33e5cbd6 | 383 | int |
a25a5a45 | 384 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 385 | { |
a25a5a45 PA |
386 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
387 | { | |
388 | /* If breakpoints are global, they should be inserted even if no | |
389 | thread under gdb's control is running, or even if there are | |
390 | no threads under GDB's control yet. */ | |
391 | return 1; | |
392 | } | |
5b6d1e4f | 393 | else |
a25a5a45 | 394 | { |
a25a5a45 PA |
395 | if (always_inserted_mode) |
396 | { | |
397 | /* The user wants breakpoints inserted even if all threads | |
398 | are stopped. */ | |
399 | return 1; | |
400 | } | |
401 | ||
5b6d1e4f PA |
402 | for (inferior *inf : all_inferiors ()) |
403 | if (inf->has_execution () | |
404 | && threads_are_executing (inf->process_target ())) | |
405 | return 1; | |
372316f1 PA |
406 | |
407 | /* Don't remove breakpoints yet if, even though all threads are | |
408 | stopped, we still have events to process. */ | |
08036331 | 409 | for (thread_info *tp : all_non_exited_threads ()) |
1edb66d8 | 410 | if (tp->resumed () && tp->has_pending_waitstatus ()) |
372316f1 | 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 | |
468d015d JJ |
630 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
631 | static int | |
632 | breakpoint_enabled (struct breakpoint *b) | |
633 | { | |
0d381245 | 634 | return (b->enable_state == bp_enabled); |
468d015d JJ |
635 | } |
636 | ||
c906108c SS |
637 | /* Set breakpoint count to NUM. */ |
638 | ||
95a42b64 | 639 | static void |
fba45db2 | 640 | set_breakpoint_count (int num) |
c906108c | 641 | { |
86b17b60 | 642 | prev_breakpoint_count = breakpoint_count; |
c906108c | 643 | breakpoint_count = num; |
4fa62494 | 644 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
645 | } |
646 | ||
86b17b60 PA |
647 | /* Used by `start_rbreak_breakpoints' below, to record the current |
648 | breakpoint count before "rbreak" creates any breakpoint. */ | |
649 | static int rbreak_start_breakpoint_count; | |
650 | ||
95a42b64 TT |
651 | /* Called at the start an "rbreak" command to record the first |
652 | breakpoint made. */ | |
86b17b60 | 653 | |
c80049d3 | 654 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 655 | { |
86b17b60 | 656 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
657 | } |
658 | ||
659 | /* Called at the end of an "rbreak" command to record the last | |
660 | breakpoint made. */ | |
86b17b60 | 661 | |
c80049d3 | 662 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 663 | { |
86b17b60 | 664 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
665 | } |
666 | ||
4a64f543 | 667 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
668 | |
669 | void | |
fba45db2 | 670 | clear_breakpoint_hit_counts (void) |
c906108c | 671 | { |
43892fdf | 672 | for (breakpoint *b : all_breakpoints ()) |
c906108c SS |
673 | b->hit_count = 0; |
674 | } | |
675 | ||
c906108c | 676 | \f |
48cb2d85 VP |
677 | /* Return the breakpoint with the specified number, or NULL |
678 | if the number does not refer to an existing breakpoint. */ | |
679 | ||
680 | struct breakpoint * | |
681 | get_breakpoint (int num) | |
682 | { | |
43892fdf | 683 | for (breakpoint *b : all_breakpoints ()) |
48cb2d85 VP |
684 | if (b->number == num) |
685 | return b; | |
686 | ||
43892fdf | 687 | return nullptr; |
48cb2d85 | 688 | } |
5c44784c | 689 | |
c906108c | 690 | \f |
adc36818 | 691 | |
b775012e LM |
692 | /* Mark locations as "conditions have changed" in case the target supports |
693 | evaluating conditions on its side. */ | |
694 | ||
695 | static void | |
696 | mark_breakpoint_modified (struct breakpoint *b) | |
697 | { | |
b775012e LM |
698 | /* This is only meaningful if the target is |
699 | evaluating conditions and if the user has | |
700 | opted for condition evaluation on the target's | |
701 | side. */ | |
702 | if (gdb_evaluates_breakpoint_condition_p () | |
703 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
704 | return; | |
705 | ||
706 | if (!is_breakpoint (b)) | |
707 | return; | |
708 | ||
40cb8ca5 | 709 | for (bp_location *loc : b->locations ()) |
b775012e LM |
710 | loc->condition_changed = condition_modified; |
711 | } | |
712 | ||
713 | /* Mark location as "conditions have changed" in case the target supports | |
714 | evaluating conditions on its side. */ | |
715 | ||
716 | static void | |
717 | mark_breakpoint_location_modified (struct bp_location *loc) | |
718 | { | |
719 | /* This is only meaningful if the target is | |
720 | evaluating conditions and if the user has | |
721 | opted for condition evaluation on the target's | |
722 | side. */ | |
723 | if (gdb_evaluates_breakpoint_condition_p () | |
724 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
725 | ||
726 | return; | |
727 | ||
728 | if (!is_breakpoint (loc->owner)) | |
729 | return; | |
730 | ||
731 | loc->condition_changed = condition_modified; | |
732 | } | |
733 | ||
734 | /* Sets the condition-evaluation mode using the static global | |
735 | condition_evaluation_mode. */ | |
736 | ||
737 | static void | |
eb4c3f4a | 738 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
739 | struct cmd_list_element *c) |
740 | { | |
b775012e LM |
741 | const char *old_mode, *new_mode; |
742 | ||
743 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
744 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
745 | { | |
746 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
747 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
748 | "Using host evaluation mode instead.")); | |
749 | return; | |
750 | } | |
751 | ||
752 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
753 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
754 | ||
abf1152a JK |
755 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
756 | settings was "auto". */ | |
757 | condition_evaluation_mode = condition_evaluation_mode_1; | |
758 | ||
b775012e LM |
759 | /* Only update the mode if the user picked a different one. */ |
760 | if (new_mode != old_mode) | |
761 | { | |
b775012e LM |
762 | /* If the user switched to a different evaluation mode, we |
763 | need to synch the changes with the target as follows: | |
764 | ||
765 | "host" -> "target": Send all (valid) conditions to the target. | |
766 | "target" -> "host": Remove all the conditions from the target. | |
767 | */ | |
768 | ||
b775012e LM |
769 | if (new_mode == condition_evaluation_target) |
770 | { | |
771 | /* Mark everything modified and synch conditions with the | |
772 | target. */ | |
48d7020b | 773 | for (bp_location *loc : all_bp_locations ()) |
b775012e | 774 | mark_breakpoint_location_modified (loc); |
24b21115 | 775 | } |
b775012e LM |
776 | else |
777 | { | |
778 | /* Manually mark non-duplicate locations to synch conditions | |
779 | with the target. We do this to remove all the conditions the | |
780 | target knows about. */ | |
48d7020b | 781 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
782 | if (is_breakpoint (loc->owner) && loc->inserted) |
783 | loc->needs_update = 1; | |
784 | } | |
785 | ||
786 | /* Do the update. */ | |
44702360 | 787 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
788 | } |
789 | ||
790 | return; | |
791 | } | |
792 | ||
793 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
794 | what "auto" is translating to. */ | |
795 | ||
796 | static void | |
797 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
798 | struct cmd_list_element *c, const char *value) | |
799 | { | |
800 | if (condition_evaluation_mode == condition_evaluation_auto) | |
6cb06a8c TT |
801 | gdb_printf (file, |
802 | _("Breakpoint condition evaluation " | |
803 | "mode is %s (currently %s).\n"), | |
804 | value, | |
805 | breakpoint_condition_evaluation_mode ()); | |
b775012e | 806 | else |
6cb06a8c TT |
807 | gdb_printf (file, _("Breakpoint condition evaluation mode is %s.\n"), |
808 | value); | |
b775012e LM |
809 | } |
810 | ||
b5fa468f TBA |
811 | /* Parse COND_STRING in the context of LOC and set as the condition |
812 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
813 | the number of LOC within its owner. In case of parsing error, mark | |
814 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
815 | ||
816 | static void | |
817 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
818 | int bp_num, int loc_num) | |
819 | { | |
820 | bool has_junk = false; | |
821 | try | |
822 | { | |
823 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
824 | block_for_pc (loc->address), 0); | |
825 | if (*cond_string != 0) | |
826 | has_junk = true; | |
827 | else | |
828 | { | |
829 | loc->cond = std::move (new_exp); | |
830 | if (loc->disabled_by_cond && loc->enabled) | |
6cb06a8c TT |
831 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
832 | "location %d, enabling.\n"), | |
833 | bp_num, loc_num); | |
b5fa468f TBA |
834 | |
835 | loc->disabled_by_cond = false; | |
836 | } | |
837 | } | |
838 | catch (const gdb_exception_error &e) | |
839 | { | |
840 | if (loc->enabled) | |
841 | { | |
842 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
843 | BP_NUM is 0 if the breakpoint is being defined for the first | |
844 | time using the "break ... if ..." command, and non-zero if | |
845 | already defined. */ | |
846 | if (bp_num != 0) | |
847 | warning (_("failed to validate condition at location %d.%d, " | |
848 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
849 | else | |
850 | warning (_("failed to validate condition at location %d, " | |
851 | "disabling:\n %s"), loc_num, e.what ()); | |
852 | } | |
853 | ||
854 | loc->disabled_by_cond = true; | |
855 | } | |
856 | ||
857 | if (has_junk) | |
858 | error (_("Garbage '%s' follows condition"), cond_string); | |
859 | } | |
860 | ||
adc36818 | 861 | void |
7a26bd4d | 862 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 863 | int from_tty, bool force) |
adc36818 | 864 | { |
4c55e970 | 865 | if (*exp == 0) |
3a5c3e22 | 866 | { |
6f781ee3 | 867 | b->cond_string.reset (); |
3a5c3e22 | 868 | |
4c55e970 | 869 | if (is_watchpoint (b)) |
78319c15 | 870 | static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
871 | else |
872 | { | |
b5fa468f | 873 | int loc_num = 1; |
40cb8ca5 | 874 | for (bp_location *loc : b->locations ()) |
4c55e970 TBA |
875 | { |
876 | loc->cond.reset (); | |
b5fa468f | 877 | if (loc->disabled_by_cond && loc->enabled) |
6cb06a8c TT |
878 | gdb_printf (_("Breakpoint %d's condition is now valid at " |
879 | "location %d, enabling.\n"), | |
880 | b->number, loc_num); | |
b5fa468f TBA |
881 | loc->disabled_by_cond = false; |
882 | loc_num++; | |
4c55e970 TBA |
883 | |
884 | /* No need to free the condition agent expression | |
885 | bytecode (if we have one). We will handle this | |
886 | when we go through update_global_location_list. */ | |
887 | } | |
888 | } | |
1e620590 | 889 | |
adc36818 | 890 | if (from_tty) |
6cb06a8c | 891 | gdb_printf (_("Breakpoint %d now unconditional.\n"), b->number); |
adc36818 PM |
892 | } |
893 | else | |
894 | { | |
adc36818 PM |
895 | if (is_watchpoint (b)) |
896 | { | |
699bd4cf | 897 | innermost_block_tracker tracker; |
78319c15 | 898 | const char *arg = exp; |
4c55e970 | 899 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 900 | if (*arg != 0) |
adc36818 | 901 | error (_("Junk at end of expression")); |
78319c15 | 902 | watchpoint *w = static_cast<watchpoint *> (b); |
4c55e970 | 903 | w->cond_exp = std::move (new_exp); |
699bd4cf | 904 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
905 | } |
906 | else | |
907 | { | |
4c55e970 TBA |
908 | /* Parse and set condition expressions. We make two passes. |
909 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
910 | is valid in at least one location. If so, the condition |
911 | would be accepted. So we go ahead and set the locations' | |
912 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
913 | the error and the condition string will be rejected. |
914 | This two-pass approach is taken to avoid setting the | |
915 | state of locations in case of a reject. */ | |
40cb8ca5 | 916 | for (bp_location *loc : b->locations ()) |
4c55e970 | 917 | { |
b5fa468f TBA |
918 | try |
919 | { | |
920 | const char *arg = exp; | |
921 | parse_exp_1 (&arg, loc->address, | |
922 | block_for_pc (loc->address), 0); | |
923 | if (*arg != 0) | |
924 | error (_("Junk at end of expression")); | |
925 | break; | |
926 | } | |
927 | catch (const gdb_exception_error &e) | |
928 | { | |
929 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
930 | be the last loc, abandon (if not forced) or continue |
931 | (if forced). */ | |
932 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
933 | throw; |
934 | } | |
4c55e970 TBA |
935 | } |
936 | ||
b5fa468f | 937 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 | 938 | int loc_num = 1; |
40cb8ca5 SM |
939 | for (bp_location *loc : b->locations ()) |
940 | { | |
941 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
942 | loc_num++; | |
943 | } | |
adc36818 | 944 | } |
1e620590 TBA |
945 | |
946 | /* We know that the new condition parsed successfully. The | |
947 | condition string of the breakpoint can be safely updated. */ | |
6f781ee3 | 948 | b->cond_string = make_unique_xstrdup (exp); |
1e620590 | 949 | b->condition_not_parsed = 0; |
adc36818 | 950 | } |
b775012e LM |
951 | mark_breakpoint_modified (b); |
952 | ||
76727919 | 953 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
954 | } |
955 | ||
79aabb73 TBA |
956 | /* See breakpoint.h. */ |
957 | ||
958 | void | |
959 | set_breakpoint_condition (int bpnum, const char *exp, int from_tty, | |
960 | bool force) | |
961 | { | |
43892fdf | 962 | for (breakpoint *b : all_breakpoints ()) |
79aabb73 TBA |
963 | if (b->number == bpnum) |
964 | { | |
965 | /* Check if this breakpoint has a "stop" method implemented in an | |
966 | extension language. This method and conditions entered into GDB | |
967 | from the CLI are mutually exclusive. */ | |
968 | const struct extension_language_defn *extlang | |
969 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
970 | ||
971 | if (extlang != NULL) | |
972 | { | |
973 | error (_("Only one stop condition allowed. There is currently" | |
974 | " a %s stop condition defined for this breakpoint."), | |
975 | ext_lang_capitalized_name (extlang)); | |
976 | } | |
977 | set_breakpoint_condition (b, exp, from_tty, force); | |
978 | ||
979 | if (is_breakpoint (b)) | |
980 | update_global_location_list (UGLL_MAY_INSERT); | |
981 | ||
982 | return; | |
983 | } | |
984 | ||
985 | error (_("No breakpoint number %d."), bpnum); | |
986 | } | |
987 | ||
b1d4d8d1 TBA |
988 | /* The options for the "condition" command. */ |
989 | ||
990 | struct condition_command_opts | |
991 | { | |
992 | /* For "-force". */ | |
993 | bool force_condition = false; | |
994 | }; | |
995 | ||
996 | static const gdb::option::option_def condition_command_option_defs[] = { | |
997 | ||
998 | gdb::option::flag_option_def<condition_command_opts> { | |
999 | "force", | |
1000 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
1001 | N_("Set the condition even if it is invalid for all current locations."), | |
1002 | }, | |
1003 | ||
1004 | }; | |
1005 | ||
1006 | /* Create an option_def_group for the "condition" options, with | |
1007 | CC_OPTS as context. */ | |
1008 | ||
1009 | static inline gdb::option::option_def_group | |
1010 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
1011 | { | |
1012 | return {{condition_command_option_defs}, cc_opts}; | |
1013 | } | |
1014 | ||
d55637df TT |
1015 | /* Completion for the "condition" command. */ |
1016 | ||
eb3ff9a5 | 1017 | static void |
6f937416 | 1018 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1019 | completion_tracker &tracker, |
b1d4d8d1 | 1020 | const char *text, const char * /*word*/) |
d55637df | 1021 | { |
b1d4d8d1 TBA |
1022 | bool has_no_arguments = (*text == '\0'); |
1023 | condition_command_opts cc_opts; | |
1024 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1025 | if (gdb::option::complete_options | |
1026 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1027 | return; | |
d55637df | 1028 | |
f1735a53 | 1029 | text = skip_spaces (text); |
b1d4d8d1 | 1030 | const char *space = skip_to_space (text); |
d55637df TT |
1031 | if (*space == '\0') |
1032 | { | |
1033 | int len; | |
d55637df TT |
1034 | |
1035 | if (text[0] == '$') | |
1036 | { | |
b1d4d8d1 | 1037 | tracker.advance_custom_word_point_by (1); |
d55637df | 1038 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1039 | if (!isdigit (text[1])) |
1040 | complete_internalvar (tracker, &text[1]); | |
1041 | return; | |
d55637df TT |
1042 | } |
1043 | ||
b1d4d8d1 TBA |
1044 | /* Suggest the "-force" flag if no arguments are given. If |
1045 | arguments were passed, they either already include the flag, | |
1046 | or we are beyond the point of suggesting it because it's | |
1047 | positionally the first argument. */ | |
1048 | if (has_no_arguments) | |
1049 | gdb::option::complete_on_all_options (tracker, group); | |
1050 | ||
d55637df TT |
1051 | /* We're completing the breakpoint number. */ |
1052 | len = strlen (text); | |
1053 | ||
43892fdf | 1054 | for (breakpoint *b : all_breakpoints ()) |
58ce7251 SDJ |
1055 | { |
1056 | char number[50]; | |
1057 | ||
1058 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1059 | ||
1060 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1061 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1062 | } |
d55637df | 1063 | |
eb3ff9a5 | 1064 | return; |
d55637df TT |
1065 | } |
1066 | ||
b1d4d8d1 TBA |
1067 | /* We're completing the expression part. Skip the breakpoint num. */ |
1068 | const char *exp_start = skip_spaces (space); | |
1069 | tracker.advance_custom_word_point_by (exp_start - text); | |
1070 | text = exp_start; | |
1071 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1072 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1073 | } |
1074 | ||
c906108c SS |
1075 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1076 | ||
1077 | static void | |
0b39b52e | 1078 | condition_command (const char *arg, int from_tty) |
c906108c | 1079 | { |
0b39b52e | 1080 | const char *p; |
52f0bd74 | 1081 | int bnum; |
c906108c SS |
1082 | |
1083 | if (arg == 0) | |
e2e0b3e5 | 1084 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1085 | |
1086 | p = arg; | |
733d554a TBA |
1087 | |
1088 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1089 | condition_command_opts cc_opts; |
1090 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1091 | gdb::option::process_options | |
1092 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1093 | |
c906108c | 1094 | bnum = get_number (&p); |
5c44784c | 1095 | if (bnum == 0) |
8a3fe4f8 | 1096 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c | 1097 | |
79aabb73 | 1098 | set_breakpoint_condition (bnum, p, from_tty, cc_opts.force_condition); |
c906108c SS |
1099 | } |
1100 | ||
a7bdde9e VP |
1101 | /* Check that COMMAND do not contain commands that are suitable |
1102 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1103 | Throw if any such commands is found. */ |
1104 | ||
a7bdde9e VP |
1105 | static void |
1106 | check_no_tracepoint_commands (struct command_line *commands) | |
1107 | { | |
1108 | struct command_line *c; | |
cc59ec59 | 1109 | |
a7bdde9e VP |
1110 | for (c = commands; c; c = c->next) |
1111 | { | |
a7bdde9e | 1112 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1113 | error (_("The 'while-stepping' command can " |
1114 | "only be used for tracepoints")); | |
a7bdde9e | 1115 | |
12973681 TT |
1116 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1117 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1118 | |
1119 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1120 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1121 | command directly. */ |
1122 | if (strstr (c->line, "collect ") == c->line) | |
1123 | error (_("The 'collect' command can only be used for tracepoints")); | |
1124 | ||
51661e93 VP |
1125 | if (strstr (c->line, "teval ") == c->line) |
1126 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1127 | } |
1128 | } | |
1129 | ||
c1fc2657 | 1130 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1131 | { |
c1fc2657 | 1132 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1133 | }; |
1134 | ||
d77f58be SS |
1135 | /* Encapsulate tests for different types of tracepoints. */ |
1136 | ||
3b0871f4 SM |
1137 | static bool |
1138 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1139 | { |
1140 | return (type == bp_tracepoint | |
1141 | || type == bp_fast_tracepoint | |
1142 | || type == bp_static_tracepoint); | |
1143 | } | |
1144 | ||
3b0871f4 SM |
1145 | static bool |
1146 | is_longjmp_type (bptype type) | |
1147 | { | |
1148 | return type == bp_longjmp || type == bp_exception; | |
1149 | } | |
1150 | ||
f2478a7e SM |
1151 | /* See breakpoint.h. */ |
1152 | ||
1153 | bool | |
d77f58be | 1154 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1155 | { |
d9b3f62e | 1156 | return is_tracepoint_type (b->type); |
a7bdde9e | 1157 | } |
d9b3f62e | 1158 | |
a5e364af SM |
1159 | /* Factory function to create an appropriate instance of breakpoint given |
1160 | TYPE. */ | |
1161 | ||
1162 | static std::unique_ptr<breakpoint> | |
1163 | new_breakpoint_from_type (bptype type) | |
1164 | { | |
1165 | breakpoint *b; | |
1166 | ||
1167 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1168 | b = new tracepoint (); |
3b0871f4 | 1169 | else if (is_longjmp_type (type)) |
c1fc2657 | 1170 | b = new longjmp_breakpoint (); |
a5e364af SM |
1171 | else |
1172 | b = new breakpoint (); | |
1173 | ||
1174 | return std::unique_ptr<breakpoint> (b); | |
1175 | } | |
1176 | ||
e5dd4106 | 1177 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1178 | breakpoint. This function will throw an exception if a problem is |
1179 | found. */ | |
48cb2d85 | 1180 | |
95a42b64 TT |
1181 | static void |
1182 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1183 | struct command_line *commands) | |
48cb2d85 | 1184 | { |
d77f58be | 1185 | if (is_tracepoint (b)) |
a7bdde9e | 1186 | { |
c9a6ce02 | 1187 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1188 | struct command_line *c; |
1189 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1190 | |
1191 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1192 | might have included a while-stepping action, while the new |
1193 | ones might not. */ | |
c9a6ce02 PA |
1194 | t->step_count = 0; |
1195 | ||
1196 | /* We need to verify that each top-level element of commands is | |
1197 | valid for tracepoints, that there's at most one | |
1198 | while-stepping element, and that the while-stepping's body | |
1199 | has valid tracing commands excluding nested while-stepping. | |
1200 | We also need to validate the tracepoint action line in the | |
1201 | context of the tracepoint --- validate_actionline actually | |
1202 | has side effects, like setting the tracepoint's | |
1203 | while-stepping STEP_COUNT, in addition to checking if the | |
1204 | collect/teval actions parse and make sense in the | |
1205 | tracepoint's context. */ | |
a7bdde9e VP |
1206 | for (c = commands; c; c = c->next) |
1207 | { | |
a7bdde9e VP |
1208 | if (c->control_type == while_stepping_control) |
1209 | { | |
1210 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1211 | error (_("The 'while-stepping' command " |
1212 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1213 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1214 | error (_("The 'while-stepping' command " |
1215 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1216 | |
1217 | if (while_stepping) | |
3e43a32a MS |
1218 | error (_("The 'while-stepping' command " |
1219 | "can be used only once")); | |
a7bdde9e VP |
1220 | else |
1221 | while_stepping = c; | |
1222 | } | |
c9a6ce02 PA |
1223 | |
1224 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1225 | } |
1226 | if (while_stepping) | |
1227 | { | |
1228 | struct command_line *c2; | |
1229 | ||
12973681 TT |
1230 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1231 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1232 | for (; c2; c2 = c2->next) |
1233 | { | |
a7bdde9e VP |
1234 | if (c2->control_type == while_stepping_control) |
1235 | error (_("The 'while-stepping' command cannot be nested")); | |
1236 | } | |
1237 | } | |
1238 | } | |
1239 | else | |
1240 | { | |
1241 | check_no_tracepoint_commands (commands); | |
1242 | } | |
95a42b64 TT |
1243 | } |
1244 | ||
0fb4aa4b PA |
1245 | /* Return a vector of all the static tracepoints set at ADDR. The |
1246 | caller is responsible for releasing the vector. */ | |
1247 | ||
f51e0e20 | 1248 | std::vector<breakpoint *> |
0fb4aa4b PA |
1249 | static_tracepoints_here (CORE_ADDR addr) |
1250 | { | |
f51e0e20 | 1251 | std::vector<breakpoint *> found; |
0fb4aa4b | 1252 | |
43892fdf | 1253 | for (breakpoint *b : all_breakpoints ()) |
0fb4aa4b PA |
1254 | if (b->type == bp_static_tracepoint) |
1255 | { | |
40cb8ca5 | 1256 | for (bp_location *loc : b->locations ()) |
0fb4aa4b | 1257 | if (loc->address == addr) |
f51e0e20 | 1258 | found.push_back (b); |
0fb4aa4b PA |
1259 | } |
1260 | ||
1261 | return found; | |
1262 | } | |
1263 | ||
95a42b64 | 1264 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1265 | validate that only allowed commands are included. */ |
95a42b64 TT |
1266 | |
1267 | void | |
4a64f543 | 1268 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1269 | counted_command_line &&commands) |
95a42b64 | 1270 | { |
93921405 | 1271 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1272 | |
d1b0a7bf | 1273 | b->commands = std::move (commands); |
76727919 | 1274 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1275 | } |
1276 | ||
45a43567 TT |
1277 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1278 | is not the same as the "silent" that may appear in the breakpoint's | |
1279 | commands. */ | |
1280 | ||
1281 | void | |
1282 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1283 | { | |
1284 | int old_silent = b->silent; | |
1285 | ||
1286 | b->silent = silent; | |
1287 | if (old_silent != silent) | |
76727919 | 1288 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1289 | } |
1290 | ||
1291 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1292 | breakpoint work for any thread. */ | |
1293 | ||
1294 | void | |
1295 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1296 | { | |
1297 | int old_thread = b->thread; | |
1298 | ||
1299 | b->thread = thread; | |
1300 | if (old_thread != thread) | |
76727919 | 1301 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1302 | } |
1303 | ||
1304 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1305 | breakpoint work for any task. */ | |
1306 | ||
1307 | void | |
1308 | breakpoint_set_task (struct breakpoint *b, int task) | |
1309 | { | |
1310 | int old_task = b->task; | |
1311 | ||
1312 | b->task = task; | |
1313 | if (old_task != task) | |
76727919 | 1314 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1315 | } |
1316 | ||
95a42b64 | 1317 | static void |
896b6bda | 1318 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1319 | struct command_line *control) |
95a42b64 | 1320 | { |
d1b0a7bf | 1321 | counted_command_line cmd; |
999700cd PW |
1322 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1323 | NULL after the call to read_command_lines if the user provides an empty | |
1324 | list of command by just typing "end". */ | |
1325 | bool cmd_read = false; | |
95a42b64 | 1326 | |
896b6bda PA |
1327 | std::string new_arg; |
1328 | ||
95a42b64 TT |
1329 | if (arg == NULL || !*arg) |
1330 | { | |
da1df1db | 1331 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1332 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1333 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1334 | breakpoint_count); | |
95a42b64 | 1335 | else if (breakpoint_count > 0) |
896b6bda | 1336 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1337 | } |
da1df1db TBA |
1338 | else |
1339 | { | |
1340 | /* Create a copy of ARG. This is needed because the "commands" | |
1341 | command may be coming from a script. In that case, the read | |
1342 | line buffer is going to be overwritten in the lambda of | |
1343 | 'map_breakpoint_numbers' below when reading the next line | |
1344 | before we are are done parsing the breakpoint numbers. */ | |
1345 | new_arg = arg; | |
1346 | } | |
1347 | arg = new_arg.c_str (); | |
48649e1b TT |
1348 | |
1349 | map_breakpoint_numbers | |
1350 | (arg, [&] (breakpoint *b) | |
1351 | { | |
999700cd | 1352 | if (!cmd_read) |
48649e1b | 1353 | { |
999700cd | 1354 | gdb_assert (cmd == NULL); |
48649e1b | 1355 | if (control != NULL) |
12973681 | 1356 | cmd = control->body_list_0; |
48649e1b TT |
1357 | else |
1358 | { | |
81b1e71c TT |
1359 | std::string str |
1360 | = string_printf (_("Type commands for breakpoint(s) " | |
1361 | "%s, one per line."), | |
1362 | arg); | |
48649e1b | 1363 | |
60b3cef2 TT |
1364 | auto do_validate = [=] (const char *line) |
1365 | { | |
1366 | validate_actionline (line, b); | |
1367 | }; | |
1368 | gdb::function_view<void (const char *)> validator; | |
1369 | if (is_tracepoint (b)) | |
1370 | validator = do_validate; | |
1371 | ||
1372 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1373 | } |
999700cd | 1374 | cmd_read = true; |
48649e1b TT |
1375 | } |
1376 | ||
1377 | /* If a breakpoint was on the list more than once, we don't need to | |
1378 | do anything. */ | |
1379 | if (b->commands != cmd) | |
1380 | { | |
d1b0a7bf | 1381 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1382 | b->commands = cmd; |
76727919 | 1383 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1384 | } |
1385 | }); | |
95a42b64 TT |
1386 | } |
1387 | ||
1388 | static void | |
0b39b52e | 1389 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1390 | { |
1391 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1392 | } |
40c03ae8 EZ |
1393 | |
1394 | /* Like commands_command, but instead of reading the commands from | |
1395 | input stream, takes them from an already parsed command structure. | |
1396 | ||
1397 | This is used by cli-script.c to DTRT with breakpoint commands | |
1398 | that are part of if and while bodies. */ | |
1399 | enum command_control_type | |
896b6bda | 1400 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1401 | { |
95a42b64 TT |
1402 | commands_command_1 (arg, 0, cmd); |
1403 | return simple_control; | |
40c03ae8 | 1404 | } |
876fa593 JK |
1405 | |
1406 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1407 | ||
1408 | static int | |
1409 | bp_location_has_shadow (struct bp_location *bl) | |
1410 | { | |
1411 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1412 | return 0; | |
1413 | if (!bl->inserted) | |
1414 | return 0; | |
1415 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1416 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1417 | return 0; |
1418 | return 1; | |
1419 | } | |
1420 | ||
9d497a19 PA |
1421 | /* Update BUF, which is LEN bytes read from the target address |
1422 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1423 | contents. | |
1424 | ||
1425 | If READBUF is not NULL, this buffer must not overlap with the of | |
1426 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1427 | failed assertion internal error will be raised. */ | |
1428 | ||
1429 | static void | |
1430 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1431 | const gdb_byte *writebuf_org, | |
1432 | ULONGEST memaddr, LONGEST len, | |
1433 | struct bp_target_info *target_info, | |
1434 | struct gdbarch *gdbarch) | |
1435 | { | |
1436 | /* Now do full processing of the found relevant range of elements. */ | |
1437 | CORE_ADDR bp_addr = 0; | |
1438 | int bp_size = 0; | |
1439 | int bptoffset = 0; | |
1440 | ||
1441 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1442 | current_program_space->aspace, 0)) | |
1443 | { | |
1444 | /* The breakpoint is inserted in a different address space. */ | |
1445 | return; | |
1446 | } | |
1447 | ||
1448 | /* Addresses and length of the part of the breakpoint that | |
1449 | we need to copy. */ | |
1450 | bp_addr = target_info->placed_address; | |
1451 | bp_size = target_info->shadow_len; | |
1452 | ||
1453 | if (bp_addr + bp_size <= memaddr) | |
1454 | { | |
1455 | /* The breakpoint is entirely before the chunk of memory we are | |
1456 | reading. */ | |
1457 | return; | |
1458 | } | |
1459 | ||
1460 | if (bp_addr >= memaddr + len) | |
1461 | { | |
1462 | /* The breakpoint is entirely after the chunk of memory we are | |
1463 | reading. */ | |
1464 | return; | |
1465 | } | |
1466 | ||
1467 | /* Offset within shadow_contents. */ | |
1468 | if (bp_addr < memaddr) | |
1469 | { | |
1470 | /* Only copy the second part of the breakpoint. */ | |
1471 | bp_size -= memaddr - bp_addr; | |
1472 | bptoffset = memaddr - bp_addr; | |
1473 | bp_addr = memaddr; | |
1474 | } | |
1475 | ||
1476 | if (bp_addr + bp_size > memaddr + len) | |
1477 | { | |
1478 | /* Only copy the first part of the breakpoint. */ | |
1479 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1480 | } | |
1481 | ||
1482 | if (readbuf != NULL) | |
1483 | { | |
1484 | /* Verify that the readbuf buffer does not overlap with the | |
1485 | shadow_contents buffer. */ | |
1486 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1487 | || readbuf >= (target_info->shadow_contents | |
1488 | + target_info->shadow_len)); | |
1489 | ||
1490 | /* Update the read buffer with this inserted breakpoint's | |
1491 | shadow. */ | |
1492 | memcpy (readbuf + bp_addr - memaddr, | |
1493 | target_info->shadow_contents + bptoffset, bp_size); | |
1494 | } | |
1495 | else | |
1496 | { | |
1497 | const unsigned char *bp; | |
0d5ed153 MR |
1498 | CORE_ADDR addr = target_info->reqstd_address; |
1499 | int placed_size; | |
9d497a19 PA |
1500 | |
1501 | /* Update the shadow with what we want to write to memory. */ | |
1502 | memcpy (target_info->shadow_contents + bptoffset, | |
1503 | writebuf_org + bp_addr - memaddr, bp_size); | |
1504 | ||
1505 | /* Determine appropriate breakpoint contents and size for this | |
1506 | address. */ | |
0d5ed153 | 1507 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1508 | |
1509 | /* Update the final write buffer with this inserted | |
1510 | breakpoint's INSN. */ | |
1511 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1512 | } | |
1513 | } | |
1514 | ||
8defab1a | 1515 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1516 | by replacing any memory breakpoints with their shadowed contents. |
1517 | ||
35c63cd8 JB |
1518 | If READBUF is not NULL, this buffer must not overlap with any of |
1519 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1520 | a failed assertion internal error will be raised. | |
1521 | ||
876fa593 | 1522 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1523 | bl->address - bp_locations_placed_address_before_address_max |
1524 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1525 | The range we were requested to resolve shadows for is: |
1526 | memaddr ... memaddr + len | |
1527 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1528 | memaddr + len <= (bl->address |
f5336ca5 | 1529 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1530 | and: |
f5336ca5 | 1531 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1532 | |
8defab1a | 1533 | void |
f0ba3972 PA |
1534 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1535 | const gdb_byte *writebuf_org, | |
1536 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1537 | { |
4a64f543 MS |
1538 | /* Left boundary, right boundary and median element of our binary |
1539 | search. */ | |
876fa593 JK |
1540 | unsigned bc_l, bc_r, bc; |
1541 | ||
4a64f543 MS |
1542 | /* Find BC_L which is a leftmost element which may affect BUF |
1543 | content. It is safe to report lower value but a failure to | |
1544 | report higher one. */ | |
876fa593 JK |
1545 | |
1546 | bc_l = 0; | |
5d51cd5d | 1547 | bc_r = bp_locations.size (); |
876fa593 JK |
1548 | while (bc_l + 1 < bc_r) |
1549 | { | |
35df4500 | 1550 | struct bp_location *bl; |
876fa593 JK |
1551 | |
1552 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1553 | bl = bp_locations[bc]; |
876fa593 | 1554 | |
4a64f543 MS |
1555 | /* Check first BL->ADDRESS will not overflow due to the added |
1556 | constant. Then advance the left boundary only if we are sure | |
1557 | the BC element can in no way affect the BUF content (MEMADDR | |
1558 | to MEMADDR + LEN range). | |
876fa593 | 1559 | |
f5336ca5 | 1560 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1561 | offset so that we cannot miss a breakpoint with its shadow |
1562 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1563 | |
f5336ca5 | 1564 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1565 | >= bl->address) |
f5336ca5 | 1566 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1567 | <= memaddr)) |
876fa593 JK |
1568 | bc_l = bc; |
1569 | else | |
1570 | bc_r = bc; | |
1571 | } | |
1572 | ||
128070bb PA |
1573 | /* Due to the binary search above, we need to make sure we pick the |
1574 | first location that's at BC_L's address. E.g., if there are | |
1575 | multiple locations at the same address, BC_L may end up pointing | |
1576 | at a duplicate location, and miss the "master"/"inserted" | |
1577 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1578 | B: | |
1579 | ||
1580 | L1@A, L2@A, L3@B, ... | |
1581 | ||
1582 | BC_L could end up pointing at location L2, while the "master" | |
1583 | location could be L1. Since the `loc->inserted' flag is only set | |
1584 | on "master" locations, we'd forget to restore the shadow of L1 | |
1585 | and L2. */ | |
1586 | while (bc_l > 0 | |
f5336ca5 | 1587 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1588 | bc_l--; |
1589 | ||
876fa593 JK |
1590 | /* Now do full processing of the found relevant range of elements. */ |
1591 | ||
5d51cd5d | 1592 | for (bc = bc_l; bc < bp_locations.size (); bc++) |
01add95b SM |
1593 | { |
1594 | struct bp_location *bl = bp_locations[bc]; | |
876fa593 | 1595 | |
01add95b SM |
1596 | /* bp_location array has BL->OWNER always non-NULL. */ |
1597 | if (bl->owner->type == bp_none) | |
1598 | warning (_("reading through apparently deleted breakpoint #%d?"), | |
1599 | bl->owner->number); | |
ffce0d52 | 1600 | |
01add95b SM |
1601 | /* Performance optimization: any further element can no longer affect BUF |
1602 | content. */ | |
876fa593 | 1603 | |
01add95b SM |
1604 | if (bl->address >= bp_locations_placed_address_before_address_max |
1605 | && (memaddr + len | |
1606 | <= (bl->address | |
1607 | - bp_locations_placed_address_before_address_max))) | |
1608 | break; | |
876fa593 | 1609 | |
01add95b SM |
1610 | if (!bp_location_has_shadow (bl)) |
1611 | continue; | |
6c95b8df | 1612 | |
01add95b SM |
1613 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1614 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1615 | } | |
c906108c | 1616 | } |
9d497a19 | 1617 | |
f2478a7e | 1618 | /* See breakpoint.h. */ |
b775012e | 1619 | |
f2478a7e | 1620 | bool |
b775012e LM |
1621 | is_breakpoint (const struct breakpoint *bpt) |
1622 | { | |
1623 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1624 | || bpt->type == bp_hardware_breakpoint |
1625 | || bpt->type == bp_dprintf); | |
b775012e LM |
1626 | } |
1627 | ||
60e1c644 PA |
1628 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1629 | ||
f2478a7e | 1630 | static bool |
d77f58be | 1631 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1632 | { |
1633 | return (bpt->type == bp_hardware_watchpoint | |
1634 | || bpt->type == bp_read_watchpoint | |
1635 | || bpt->type == bp_access_watchpoint); | |
1636 | } | |
7270d8f2 | 1637 | |
f2478a7e | 1638 | /* See breakpoint.h. */ |
60e1c644 | 1639 | |
f2478a7e | 1640 | bool |
d77f58be | 1641 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1642 | { |
1643 | return (is_hardware_watchpoint (bpt) | |
1644 | || bpt->type == bp_watchpoint); | |
1645 | } | |
1646 | ||
3a5c3e22 PA |
1647 | /* Returns true if the current thread and its running state are safe |
1648 | to evaluate or update watchpoint B. Watchpoints on local | |
1649 | expressions need to be evaluated in the context of the thread that | |
1650 | was current when the watchpoint was created, and, that thread needs | |
1651 | to be stopped to be able to select the correct frame context. | |
1652 | Watchpoints on global expressions can be evaluated on any thread, | |
1653 | and in any state. It is presently left to the target allowing | |
1654 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1655 | |
1656 | static int | |
3a5c3e22 | 1657 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1658 | { |
c1fc2657 | 1659 | return (b->pspace == current_program_space |
d7e15655 TT |
1660 | && (b->watchpoint_thread == null_ptid |
1661 | || (inferior_ptid == b->watchpoint_thread | |
611841bb | 1662 | && !inferior_thread ()->executing ()))); |
f6bc2008 PA |
1663 | } |
1664 | ||
d0fb5eae JK |
1665 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1666 | associated bp_watchpoint_scope breakpoint. */ | |
1667 | ||
1668 | static void | |
3a5c3e22 | 1669 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1670 | { |
c1fc2657 | 1671 | if (w->related_breakpoint != w) |
d0fb5eae | 1672 | { |
c1fc2657 SM |
1673 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1674 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1675 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1676 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1677 | w->related_breakpoint = w; | |
d0fb5eae | 1678 | } |
c1fc2657 | 1679 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1680 | } |
1681 | ||
bb9d5f81 PP |
1682 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1683 | watchpoint W. */ | |
1684 | ||
1685 | static struct value * | |
1686 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1687 | { | |
1688 | struct value *bit_val; | |
1689 | ||
1690 | if (val == NULL) | |
1691 | return NULL; | |
1692 | ||
1693 | bit_val = allocate_value (value_type (val)); | |
1694 | ||
1695 | unpack_value_bitfield (bit_val, | |
1696 | w->val_bitpos, | |
1697 | w->val_bitsize, | |
50888e42 | 1698 | value_contents_for_printing (val).data (), |
bb9d5f81 PP |
1699 | value_offset (val), |
1700 | val); | |
1701 | ||
1702 | return bit_val; | |
1703 | } | |
1704 | ||
c6d81124 PA |
1705 | /* Allocate a dummy location and add it to B, which must be a software |
1706 | watchpoint. This is required because even if a software watchpoint | |
1707 | is not watching any memory, bpstat_stop_status requires a location | |
1708 | to be able to report stops. */ | |
1709 | ||
1710 | static void | |
1711 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1712 | struct program_space *pspace) | |
1713 | { | |
1714 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1715 | ||
1716 | b->loc = allocate_bp_location (b); | |
1717 | b->loc->pspace = pspace; | |
1718 | b->loc->address = -1; | |
1719 | b->loc->length = -1; | |
1720 | } | |
1721 | ||
1722 | /* Returns true if B is a software watchpoint that is not watching any | |
1723 | memory (e.g., "watch $pc"). */ | |
1724 | ||
f2478a7e | 1725 | static bool |
c6d81124 PA |
1726 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1727 | { | |
1728 | return (b->type == bp_watchpoint | |
1729 | && b->loc != NULL | |
1730 | && b->loc->next == NULL | |
1731 | && b->loc->address == -1 | |
1732 | && b->loc->length == -1); | |
1733 | } | |
1734 | ||
567e1b4e JB |
1735 | /* Assuming that B is a watchpoint: |
1736 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1737 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1738 | - Evaluate the condition if there is one, and store the result |
1739 | in b->loc->cond. | |
a5606eee VP |
1740 | - Update the list of values that must be watched in B->loc. |
1741 | ||
4a64f543 MS |
1742 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1743 | nothing. If this is local watchpoint that is out of scope, delete | |
1744 | it. | |
1745 | ||
1746 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1747 | removed + inserted on each stop here. Normal breakpoints must | |
1748 | never be removed because they might be missed by a running thread | |
1749 | when debugging in non-stop mode. On the other hand, hardware | |
1750 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1751 | to each LWP since they are stored in each LWP's hardware debug | |
1752 | registers. Therefore, such LWP must be stopped first in order to | |
1753 | be able to modify its hardware watchpoints. | |
1754 | ||
1755 | Hardware watchpoints must be reset exactly once after being | |
1756 | presented to the user. It cannot be done sooner, because it would | |
1757 | reset the data used to present the watchpoint hit to the user. And | |
1758 | it must not be done later because it could display the same single | |
1759 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1760 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1761 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1762 | not user-visible - its hit is suppressed if the memory content has | |
1763 | not changed. | |
1764 | ||
1765 | The following constraints influence the location where we can reset | |
1766 | hardware watchpoints: | |
1767 | ||
1768 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1769 | called several times when GDB stops. | |
1770 | ||
1771 | [linux] | |
1772 | * Multiple hardware watchpoints can be hit at the same time, | |
1773 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1774 | hit at a time as the reason for stopping, and all the other hits | |
1775 | are presented later, one after the other, each time the user | |
1776 | requests the execution to be resumed. Execution is not resumed | |
1777 | for the threads still having pending hit event stored in | |
1778 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1779 | the inferior on the first stop the thread hit event is kept being | |
1780 | reported from its cached value by linux_nat_stopped_data_address | |
1781 | until the real thread resume happens after the watchpoint gets | |
1782 | presented and thus its LWP_INFO->STATUS gets reset. | |
1783 | ||
1784 | Therefore the hardware watchpoint hit can get safely reset on the | |
1785 | watchpoint removal from inferior. */ | |
a79d3c27 | 1786 | |
b40ce68a | 1787 | static void |
3a5c3e22 | 1788 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1789 | { |
a5606eee | 1790 | int within_current_scope; |
a5606eee | 1791 | struct frame_id saved_frame_id; |
66076460 | 1792 | int frame_saved; |
a5606eee | 1793 | |
f6bc2008 PA |
1794 | /* If this is a local watchpoint, we only want to check if the |
1795 | watchpoint frame is in scope if the current thread is the thread | |
1796 | that was used to create the watchpoint. */ | |
1797 | if (!watchpoint_in_thread_scope (b)) | |
1798 | return; | |
1799 | ||
c1fc2657 | 1800 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1801 | return; |
1802 | ||
66076460 | 1803 | frame_saved = 0; |
a5606eee VP |
1804 | |
1805 | /* Determine if the watchpoint is within scope. */ | |
1806 | if (b->exp_valid_block == NULL) | |
1807 | within_current_scope = 1; | |
1808 | else | |
1809 | { | |
b5db5dfc UW |
1810 | struct frame_info *fi = get_current_frame (); |
1811 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1812 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1813 | ||
c9cf6e20 MG |
1814 | /* If we're at a point where the stack has been destroyed |
1815 | (e.g. in a function epilogue), unwinding may not work | |
1816 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1817 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1818 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1819 | return; |
66076460 DJ |
1820 | |
1821 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1822 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1823 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1824 | took a frame parameter, so that we didn't have to change the |
1825 | selected frame. */ | |
66076460 DJ |
1826 | frame_saved = 1; |
1827 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1828 | ||
a5606eee VP |
1829 | fi = frame_find_by_id (b->watchpoint_frame); |
1830 | within_current_scope = (fi != NULL); | |
1831 | if (within_current_scope) | |
1832 | select_frame (fi); | |
1833 | } | |
1834 | ||
b5db5dfc UW |
1835 | /* We don't free locations. They are stored in the bp_location array |
1836 | and update_global_location_list will eventually delete them and | |
1837 | remove breakpoints if needed. */ | |
c1fc2657 | 1838 | b->loc = NULL; |
b5db5dfc | 1839 | |
a5606eee VP |
1840 | if (within_current_scope && reparse) |
1841 | { | |
bbc13ae3 | 1842 | const char *s; |
d63d0675 | 1843 | |
4d01a485 | 1844 | b->exp.reset (); |
a4c50be3 TT |
1845 | s = (b->exp_string_reparse |
1846 | ? b->exp_string_reparse.get () | |
1847 | : b->exp_string.get ()); | |
1bb9788d | 1848 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1849 | /* If the meaning of expression itself changed, the old value is |
1850 | no longer relevant. We don't want to report a watchpoint hit | |
1851 | to the user when the old value and the new value may actually | |
1852 | be completely different objects. */ | |
fa4727a6 | 1853 | b->val = NULL; |
4c1d86d9 | 1854 | b->val_valid = false; |
60e1c644 PA |
1855 | |
1856 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1857 | expression is stored in the breakpoint object, not in the | |
1858 | locations (re)created below. */ | |
c1fc2657 | 1859 | if (b->cond_string != NULL) |
60e1c644 | 1860 | { |
4d01a485 | 1861 | b->cond_exp.reset (); |
60e1c644 | 1862 | |
6f781ee3 | 1863 | s = b->cond_string.get (); |
1bb9788d | 1864 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1865 | } |
a5606eee | 1866 | } |
a5606eee VP |
1867 | |
1868 | /* If we failed to parse the expression, for example because | |
1869 | it refers to a global variable in a not-yet-loaded shared library, | |
1870 | don't try to insert watchpoint. We don't automatically delete | |
1871 | such watchpoint, though, since failure to parse expression | |
1872 | is different from out-of-scope watchpoint. */ | |
55f6301a | 1873 | if (!target_has_execution ()) |
2d134ed3 PA |
1874 | { |
1875 | /* Without execution, memory can't change. No use to try and | |
1876 | set watchpoint locations. The watchpoint will be reset when | |
1877 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1878 | if (!can_use_hw_watchpoints) |
1879 | { | |
c1fc2657 SM |
1880 | if (b->ops->works_in_software_mode (b)) |
1881 | b->type = bp_watchpoint; | |
e8369a73 | 1882 | else |
638aa5a1 AB |
1883 | error (_("Can't set read/access watchpoint when " |
1884 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1885 | } |
2d134ed3 PA |
1886 | } |
1887 | else if (within_current_scope && b->exp) | |
a5606eee | 1888 | { |
a6535de1 | 1889 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1890 | struct value *v, *result; |
2d134ed3 | 1891 | struct program_space *frame_pspace; |
a5606eee | 1892 | |
1eaebe02 | 1893 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &v, &result, |
413403fc | 1894 | &val_chain, false); |
a5606eee | 1895 | |
a5606eee VP |
1896 | /* Avoid setting b->val if it's already set. The meaning of |
1897 | b->val is 'the last value' user saw, and we should update | |
1898 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1899 | happens, the code that reports it updates b->val directly. |
1900 | We don't keep track of the memory value for masked | |
1901 | watchpoints. */ | |
c1fc2657 | 1902 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1903 | { |
bb9d5f81 | 1904 | if (b->val_bitsize != 0) |
850645cf TT |
1905 | v = extract_bitfield_from_watchpoint_value (b, v); |
1906 | b->val = release_value (v); | |
4c1d86d9 | 1907 | b->val_valid = true; |
fa4727a6 | 1908 | } |
a5606eee | 1909 | |
2d134ed3 PA |
1910 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1911 | ||
a5606eee | 1912 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1913 | gdb_assert (!val_chain.empty ()); |
1914 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1915 | { |
a6535de1 TT |
1916 | v = iter.get (); |
1917 | ||
a5606eee VP |
1918 | /* If it's a memory location, and GDB actually needed |
1919 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1920 | must watch it. If the first value returned is |
1921 | still lazy, that means an error occurred reading it; | |
1922 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1923 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1924 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1925 | { |
1926 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1927 | |
a5606eee VP |
1928 | /* We only watch structs and arrays if user asked |
1929 | for it explicitly, never if they just happen to | |
1930 | appear in the middle of some value chain. */ | |
fa4727a6 | 1931 | if (v == result |
78134374 SM |
1932 | || (vtype->code () != TYPE_CODE_STRUCT |
1933 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
1934 | { |
1935 | CORE_ADDR addr; | |
f486487f | 1936 | enum target_hw_bp_type type; |
a5606eee | 1937 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1938 | int bitpos = 0, bitsize = 0; |
1939 | ||
1940 | if (value_bitsize (v) != 0) | |
1941 | { | |
1942 | /* Extract the bit parameters out from the bitfield | |
1943 | sub-expression. */ | |
1944 | bitpos = value_bitpos (v); | |
1945 | bitsize = value_bitsize (v); | |
1946 | } | |
1947 | else if (v == result && b->val_bitsize != 0) | |
1948 | { | |
1949 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1950 | lvalue whose bit parameters are saved in the fields | |
1951 | VAL_BITPOS and VAL_BITSIZE. */ | |
1952 | bitpos = b->val_bitpos; | |
1953 | bitsize = b->val_bitsize; | |
1954 | } | |
a5606eee | 1955 | |
42ae5230 | 1956 | addr = value_address (v); |
bb9d5f81 PP |
1957 | if (bitsize != 0) |
1958 | { | |
1959 | /* Skip the bytes that don't contain the bitfield. */ | |
1960 | addr += bitpos / 8; | |
1961 | } | |
1962 | ||
a5606eee | 1963 | type = hw_write; |
c1fc2657 | 1964 | if (b->type == bp_read_watchpoint) |
a5606eee | 1965 | type = hw_read; |
c1fc2657 | 1966 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1967 | type = hw_access; |
3a5c3e22 | 1968 | |
c1fc2657 SM |
1969 | loc = allocate_bp_location (b); |
1970 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1971 | ; |
1972 | *tmp = loc; | |
8ee511af | 1973 | loc->gdbarch = value_type (v)->arch (); |
6c95b8df PA |
1974 | |
1975 | loc->pspace = frame_pspace; | |
f17d9474 | 1976 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1977 | |
1978 | if (bitsize != 0) | |
1979 | { | |
1980 | /* Just cover the bytes that make up the bitfield. */ | |
1981 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1982 | } | |
1983 | else | |
1984 | loc->length = TYPE_LENGTH (value_type (v)); | |
1985 | ||
a5606eee VP |
1986 | loc->watchpoint_type = type; |
1987 | } | |
1988 | } | |
9fa40276 TJB |
1989 | } |
1990 | ||
1991 | /* Change the type of breakpoint between hardware assisted or | |
1992 | an ordinary watchpoint depending on the hardware support | |
1993 | and free hardware slots. REPARSE is set when the inferior | |
1994 | is started. */ | |
a9634178 | 1995 | if (reparse) |
9fa40276 | 1996 | { |
e09342b5 | 1997 | int reg_cnt; |
9fa40276 | 1998 | enum bp_loc_type loc_type; |
a5606eee | 1999 | |
a9634178 | 2000 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2001 | |
2002 | if (reg_cnt) | |
9fa40276 TJB |
2003 | { |
2004 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2005 | enum bptype type; |
9fa40276 | 2006 | |
a9634178 TJB |
2007 | /* Use an exact watchpoint when there's only one memory region to be |
2008 | watched, and only one debug register is needed to watch it. */ | |
2009 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2010 | ||
9fa40276 | 2011 | /* We need to determine how many resources are already |
e09342b5 TJB |
2012 | used for all other hardware watchpoints plus this one |
2013 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2014 | this watchpoint in as well. */ |
2015 | ||
2016 | /* If this is a software watchpoint, we try to turn it | |
2017 | to a hardware one -- count resources as if B was of | |
2018 | hardware watchpoint type. */ | |
c1fc2657 | 2019 | type = b->type; |
a1398e0c PA |
2020 | if (type == bp_watchpoint) |
2021 | type = bp_hardware_watchpoint; | |
2022 | ||
2023 | /* This watchpoint may or may not have been placed on | |
2024 | the list yet at this point (it won't be in the list | |
2025 | if we're trying to create it for the first time, | |
2026 | through watch_command), so always account for it | |
2027 | manually. */ | |
2028 | ||
2029 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2030 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2031 | |
2032 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2033 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2034 | |
2035 | target_resources_ok | |
2036 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2037 | if (target_resources_ok <= 0) |
a9634178 | 2038 | { |
c1fc2657 | 2039 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
2040 | |
2041 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2042 | error (_("Target does not support this type of " |
2043 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2044 | else if (target_resources_ok < 0 && !sw_mode) |
2045 | error (_("There are not enough available hardware " | |
2046 | "resources for this watchpoint.")); | |
a1398e0c PA |
2047 | |
2048 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2049 | b->type = bp_watchpoint; |
a1398e0c PA |
2050 | } |
2051 | else | |
2052 | { | |
2053 | /* If this was a software watchpoint, we've just | |
2054 | found we have enough resources to turn it to a | |
2055 | hardware watchpoint. Otherwise, this is a | |
2056 | nop. */ | |
c1fc2657 | 2057 | b->type = type; |
a9634178 | 2058 | } |
9fa40276 | 2059 | } |
c1fc2657 | 2060 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
2061 | { |
2062 | if (!can_use_hw_watchpoints) | |
2063 | error (_("Can't set read/access watchpoint when " | |
2064 | "hardware watchpoints are disabled.")); | |
2065 | else | |
2066 | error (_("Expression cannot be implemented with " | |
2067 | "read/access watchpoint.")); | |
2068 | } | |
9fa40276 | 2069 | else |
c1fc2657 | 2070 | b->type = bp_watchpoint; |
9fa40276 | 2071 | |
c1fc2657 | 2072 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 2073 | : bp_loc_hardware_watchpoint); |
40cb8ca5 | 2074 | for (bp_location *bl : b->locations ()) |
9fa40276 TJB |
2075 | bl->loc_type = loc_type; |
2076 | } | |
2077 | ||
c7437ca6 PA |
2078 | /* If a software watchpoint is not watching any memory, then the |
2079 | above left it without any location set up. But, | |
2080 | bpstat_stop_status requires a location to be able to report | |
2081 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2082 | if (b->type == bp_watchpoint && b->loc == NULL) |
2083 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2084 | } |
2085 | else if (!within_current_scope) | |
7270d8f2 | 2086 | { |
6cb06a8c | 2087 | gdb_printf (_("\ |
ac74f770 MS |
2088 | Watchpoint %d deleted because the program has left the block\n\ |
2089 | in which its expression is valid.\n"), | |
6cb06a8c | 2090 | b->number); |
d0fb5eae | 2091 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2092 | } |
a5606eee VP |
2093 | |
2094 | /* Restore the selected frame. */ | |
66076460 DJ |
2095 | if (frame_saved) |
2096 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2097 | } |
2098 | ||
a5606eee | 2099 | |
74960c60 | 2100 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2101 | inserted in the inferior. We don't differentiate the type of BL's owner |
2102 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2103 | breakpoint_ops is not defined, because in insert_bp_location, | |
2104 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2105 | static int |
35df4500 | 2106 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2107 | { |
35df4500 | 2108 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2109 | return 0; |
2110 | ||
35df4500 | 2111 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2112 | return 0; |
2113 | ||
b5fa468f TBA |
2114 | if (!bl->enabled || bl->disabled_by_cond |
2115 | || bl->shlib_disabled || bl->duplicate) | |
74960c60 VP |
2116 | return 0; |
2117 | ||
f8eba3c6 TT |
2118 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2119 | return 0; | |
2120 | ||
56710373 PA |
2121 | /* This is set for example, when we're attached to the parent of a |
2122 | vfork, and have detached from the child. The child is running | |
2123 | free, and we expect it to do an exec or exit, at which point the | |
2124 | OS makes the parent schedulable again (and the target reports | |
2125 | that the vfork is done). Until the child is done with the shared | |
2126 | memory region, do not insert breakpoints in the parent, otherwise | |
2127 | the child could still trip on the parent's breakpoints. Since | |
2128 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2129 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2130 | return 0; |
2131 | ||
31e77af2 | 2132 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2133 | location, except if the breakpoint is a single-step breakpoint, |
2134 | and the breakpoint's thread is the thread which is stepping past | |
2135 | a breakpoint. */ | |
31e77af2 PA |
2136 | if ((bl->loc_type == bp_loc_software_breakpoint |
2137 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2138 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2139 | bl->address) |
2140 | /* The single-step breakpoint may be inserted at the location | |
2141 | we're trying to step if the instruction branches to itself. | |
2142 | However, the instruction won't be executed at all and it may | |
2143 | break the semantics of the instruction, for example, the | |
2144 | instruction is a conditional branch or updates some flags. | |
2145 | We can't fix it unless GDB is able to emulate the instruction | |
2146 | or switch to displaced stepping. */ | |
2147 | && !(bl->owner->type == bp_single_step | |
2148 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2149 | { |
1eb8556f SM |
2150 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2151 | paddress (bl->gdbarch, bl->address)); | |
e558d7c1 PA |
2152 | return 0; |
2153 | } | |
31e77af2 | 2154 | |
963f9c80 PA |
2155 | /* Don't insert watchpoints if we're trying to step past the |
2156 | instruction that triggered one. */ | |
2157 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2158 | && stepping_past_nonsteppable_watchpoint ()) | |
2159 | { | |
1eb8556f | 2160 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2161 | "skipping watchpoint at %s:%d", |
1eb8556f | 2162 | paddress (bl->gdbarch, bl->address), bl->length); |
963f9c80 PA |
2163 | return 0; |
2164 | } | |
2165 | ||
74960c60 VP |
2166 | return 1; |
2167 | } | |
2168 | ||
934709f0 PW |
2169 | /* Same as should_be_inserted but does the check assuming |
2170 | that the location is not duplicated. */ | |
2171 | ||
2172 | static int | |
2173 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2174 | { | |
2175 | int result; | |
2176 | const int save_duplicate = bl->duplicate; | |
2177 | ||
2178 | bl->duplicate = 0; | |
2179 | result = should_be_inserted (bl); | |
2180 | bl->duplicate = save_duplicate; | |
2181 | return result; | |
2182 | } | |
2183 | ||
b775012e LM |
2184 | /* Parses a conditional described by an expression COND into an |
2185 | agent expression bytecode suitable for evaluation | |
2186 | by the bytecode interpreter. Return NULL if there was | |
2187 | any error during parsing. */ | |
2188 | ||
833177a4 | 2189 | static agent_expr_up |
b775012e LM |
2190 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2191 | { | |
833177a4 | 2192 | if (cond == NULL) |
b775012e LM |
2193 | return NULL; |
2194 | ||
833177a4 PA |
2195 | agent_expr_up aexpr; |
2196 | ||
b775012e LM |
2197 | /* We don't want to stop processing, so catch any errors |
2198 | that may show up. */ | |
a70b8144 | 2199 | try |
b775012e | 2200 | { |
036e657b | 2201 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2202 | } |
2203 | ||
230d2906 | 2204 | catch (const gdb_exception_error &ex) |
b775012e LM |
2205 | { |
2206 | /* If we got here, it means the condition could not be parsed to a valid | |
2207 | bytecode expression and thus can't be evaluated on the target's side. | |
2208 | It's no use iterating through the conditions. */ | |
b775012e LM |
2209 | } |
2210 | ||
2211 | /* We have a valid agent expression. */ | |
2212 | return aexpr; | |
2213 | } | |
2214 | ||
2215 | /* Based on location BL, create a list of breakpoint conditions to be | |
2216 | passed on to the target. If we have duplicated locations with different | |
2217 | conditions, we will add such conditions to the list. The idea is that the | |
2218 | target will evaluate the list of conditions and will only notify GDB when | |
2219 | one of them is true. */ | |
2220 | ||
2221 | static void | |
2222 | build_target_condition_list (struct bp_location *bl) | |
2223 | { | |
b775012e LM |
2224 | int null_condition_or_parse_error = 0; |
2225 | int modified = bl->needs_update; | |
b775012e | 2226 | |
8b4f3082 | 2227 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2228 | bl->target_info.conditions.clear (); |
8b4f3082 | 2229 | |
b775012e LM |
2230 | /* This is only meaningful if the target is |
2231 | evaluating conditions and if the user has | |
2232 | opted for condition evaluation on the target's | |
2233 | side. */ | |
2234 | if (gdb_evaluates_breakpoint_condition_p () | |
2235 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2236 | return; | |
2237 | ||
e0d9a270 SM |
2238 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2239 | ||
b775012e | 2240 | /* Do a first pass to check for locations with no assigned |
7f32a4d5 PA |
2241 | conditions or conditions that fail to parse to a valid agent |
2242 | expression bytecode. If any of these happen, then it's no use to | |
2243 | send conditions to the target since this location will always | |
2244 | trigger and generate a response back to GDB. Note we consider | |
2245 | all locations at the same address irrespective of type, i.e., | |
2246 | even if the locations aren't considered duplicates (e.g., | |
2247 | software breakpoint and hardware breakpoint at the same | |
2248 | address). */ | |
e0d9a270 | 2249 | for (bp_location *loc : loc_range) |
b775012e | 2250 | { |
b775012e LM |
2251 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2252 | { | |
2253 | if (modified) | |
2254 | { | |
b775012e LM |
2255 | /* Re-parse the conditions since something changed. In that |
2256 | case we already freed the condition bytecodes (see | |
2257 | force_breakpoint_reinsertion). We just | |
2258 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2259 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2260 | loc->cond.get ()); | |
b775012e LM |
2261 | } |
2262 | ||
2263 | /* If we have a NULL bytecode expression, it means something | |
2264 | went wrong or we have a null condition expression. */ | |
2265 | if (!loc->cond_bytecode) | |
2266 | { | |
2267 | null_condition_or_parse_error = 1; | |
2268 | break; | |
2269 | } | |
2270 | } | |
2271 | } | |
2272 | ||
2273 | /* If any of these happened, it means we will have to evaluate the conditions | |
2274 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2275 | for all the other duplicate locations, thus we free all of them here. | |
2276 | ||
2277 | This is so we have a finer control over which locations' conditions are | |
2278 | being evaluated by GDB or the remote stub. */ | |
2279 | if (null_condition_or_parse_error) | |
2280 | { | |
e0d9a270 | 2281 | for (bp_location *loc : loc_range) |
b775012e | 2282 | { |
b775012e LM |
2283 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2284 | { | |
2285 | /* Only go as far as the first NULL bytecode is | |
2286 | located. */ | |
2287 | if (!loc->cond_bytecode) | |
2288 | return; | |
2289 | ||
833177a4 | 2290 | loc->cond_bytecode.reset (); |
b775012e LM |
2291 | } |
2292 | } | |
2293 | } | |
2294 | ||
7f32a4d5 PA |
2295 | /* No NULL conditions or failed bytecode generation. Build a |
2296 | condition list for this location's address. If we have software | |
2297 | and hardware locations at the same address, they aren't | |
2298 | considered duplicates, but we still marge all the conditions | |
2299 | anyway, as it's simpler, and doesn't really make a practical | |
2300 | difference. */ | |
e0d9a270 SM |
2301 | for (bp_location *loc : loc_range) |
2302 | if (loc->cond | |
2303 | && is_breakpoint (loc->owner) | |
2304 | && loc->pspace->num == bl->pspace->num | |
2305 | && loc->owner->enable_state == bp_enabled | |
2306 | && loc->enabled | |
2307 | && !loc->disabled_by_cond) | |
2308 | { | |
2309 | /* Add the condition to the vector. This will be used later | |
2310 | to send the conditions to the target. */ | |
2311 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2312 | } | |
b775012e LM |
2313 | |
2314 | return; | |
2315 | } | |
2316 | ||
d3ce09f5 SS |
2317 | /* Parses a command described by string CMD into an agent expression |
2318 | bytecode suitable for evaluation by the bytecode interpreter. | |
2319 | Return NULL if there was any error during parsing. */ | |
2320 | ||
833177a4 | 2321 | static agent_expr_up |
d3ce09f5 SS |
2322 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2323 | { | |
bbc13ae3 KS |
2324 | const char *cmdrest; |
2325 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2326 | struct gdbarch *gdbarch = get_current_arch (); |
2327 | ||
833177a4 | 2328 | if (cmd == NULL) |
d3ce09f5 SS |
2329 | return NULL; |
2330 | ||
2331 | cmdrest = cmd; | |
2332 | ||
2333 | if (*cmdrest == ',') | |
2334 | ++cmdrest; | |
f1735a53 | 2335 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2336 | |
2337 | if (*cmdrest++ != '"') | |
2338 | error (_("No format string following the location")); | |
2339 | ||
2340 | format_start = cmdrest; | |
2341 | ||
8e481c3b | 2342 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2343 | |
2344 | format_end = cmdrest; | |
2345 | ||
2346 | if (*cmdrest++ != '"') | |
2347 | error (_("Bad format string, non-terminated '\"'.")); | |
2348 | ||
f1735a53 | 2349 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2350 | |
2351 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2352 | error (_("Invalid argument syntax")); | |
2353 | ||
2354 | if (*cmdrest == ',') | |
2355 | cmdrest++; | |
f1735a53 | 2356 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2357 | |
2358 | /* For each argument, make an expression. */ | |
2359 | ||
8e481c3b | 2360 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2361 | while (*cmdrest != '\0') |
2362 | { | |
bbc13ae3 | 2363 | const char *cmd1; |
d3ce09f5 SS |
2364 | |
2365 | cmd1 = cmdrest; | |
4d01a485 | 2366 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2367 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2368 | cmdrest = cmd1; |
2369 | if (*cmdrest == ',') | |
2370 | ++cmdrest; | |
2371 | } | |
2372 | ||
833177a4 PA |
2373 | agent_expr_up aexpr; |
2374 | ||
d3ce09f5 SS |
2375 | /* We don't want to stop processing, so catch any errors |
2376 | that may show up. */ | |
a70b8144 | 2377 | try |
d3ce09f5 | 2378 | { |
036e657b JB |
2379 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2380 | format_start, format_end - format_start, | |
8e481c3b | 2381 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2382 | } |
230d2906 | 2383 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2384 | { |
2385 | /* If we got here, it means the command could not be parsed to a valid | |
2386 | bytecode expression and thus can't be evaluated on the target's side. | |
2387 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2388 | } |
492d29ea | 2389 | |
d3ce09f5 SS |
2390 | /* We have a valid agent expression, return it. */ |
2391 | return aexpr; | |
2392 | } | |
2393 | ||
2394 | /* Based on location BL, create a list of breakpoint commands to be | |
2395 | passed on to the target. If we have duplicated locations with | |
2396 | different commands, we will add any such to the list. */ | |
2397 | ||
2398 | static void | |
2399 | build_target_command_list (struct bp_location *bl) | |
2400 | { | |
d3ce09f5 SS |
2401 | int null_command_or_parse_error = 0; |
2402 | int modified = bl->needs_update; | |
d3ce09f5 | 2403 | |
3cde5c42 PA |
2404 | /* Clear commands left over from a previous insert. */ |
2405 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2406 | |
41fac0cf | 2407 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2408 | return; |
2409 | ||
41fac0cf PA |
2410 | /* For now, limit to agent-style dprintf breakpoints. */ |
2411 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2412 | return; |
2413 | ||
e0d9a270 SM |
2414 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2415 | ||
7f32a4d5 PA |
2416 | /* For now, if we have any location at the same address that isn't a |
2417 | dprintf, don't install the target-side commands, as that would | |
2418 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf | 2419 | control. */ |
e0d9a270 SM |
2420 | for (bp_location *loc : loc_range) |
2421 | if (is_breakpoint (loc->owner) | |
2422 | && loc->pspace->num == bl->pspace->num | |
2423 | && loc->owner->type != bp_dprintf) | |
2424 | return; | |
41fac0cf | 2425 | |
d3ce09f5 SS |
2426 | /* Do a first pass to check for locations with no assigned |
2427 | conditions or conditions that fail to parse to a valid agent expression | |
2428 | bytecode. If any of these happen, then it's no use to send conditions | |
2429 | to the target since this location will always trigger and generate a | |
2430 | response back to GDB. */ | |
e0d9a270 | 2431 | for (bp_location *loc : loc_range) |
d3ce09f5 | 2432 | { |
d3ce09f5 SS |
2433 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2434 | { | |
2435 | if (modified) | |
2436 | { | |
d3ce09f5 SS |
2437 | /* Re-parse the commands since something changed. In that |
2438 | case we already freed the command bytecodes (see | |
2439 | force_breakpoint_reinsertion). We just | |
2440 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2441 | loc->cmd_bytecode |
2442 | = parse_cmd_to_aexpr (bl->address, | |
6f781ee3 | 2443 | loc->owner->extra_string.get ()); |
d3ce09f5 SS |
2444 | } |
2445 | ||
2446 | /* If we have a NULL bytecode expression, it means something | |
2447 | went wrong or we have a null command expression. */ | |
2448 | if (!loc->cmd_bytecode) | |
2449 | { | |
2450 | null_command_or_parse_error = 1; | |
2451 | break; | |
2452 | } | |
2453 | } | |
2454 | } | |
2455 | ||
2456 | /* If anything failed, then we're not doing target-side commands, | |
2457 | and so clean up. */ | |
2458 | if (null_command_or_parse_error) | |
2459 | { | |
e0d9a270 SM |
2460 | for (bp_location *loc : loc_range) |
2461 | if (is_breakpoint (loc->owner) | |
2462 | && loc->pspace->num == bl->pspace->num) | |
2463 | { | |
2464 | /* Only go as far as the first NULL bytecode is | |
2465 | located. */ | |
2466 | if (loc->cmd_bytecode == NULL) | |
2467 | return; | |
d3ce09f5 | 2468 | |
e0d9a270 SM |
2469 | loc->cmd_bytecode.reset (); |
2470 | } | |
d3ce09f5 SS |
2471 | } |
2472 | ||
7f32a4d5 PA |
2473 | /* No NULL commands or failed bytecode generation. Build a command |
2474 | list for all duplicate locations at this location's address. | |
2475 | Note that here we must care for whether the breakpoint location | |
2476 | types are considered duplicates, otherwise, say, if we have a | |
2477 | software and hardware location at the same address, the target | |
2478 | could end up running the commands twice. For the moment, we only | |
2479 | support targets-side commands with dprintf, but it doesn't hurt | |
2480 | to be pedantically correct in case that changes. */ | |
e0d9a270 SM |
2481 | for (bp_location *loc : loc_range) |
2482 | if (breakpoint_locations_match (bl, loc) | |
2483 | && loc->owner->extra_string | |
2484 | && is_breakpoint (loc->owner) | |
2485 | && loc->pspace->num == bl->pspace->num | |
2486 | && loc->owner->enable_state == bp_enabled | |
2487 | && loc->enabled | |
2488 | && !loc->disabled_by_cond) | |
2489 | { | |
2490 | /* Add the command to the vector. This will be used later | |
2491 | to send the commands to the target. */ | |
2492 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2493 | } | |
d3ce09f5 SS |
2494 | |
2495 | bl->target_info.persist = 0; | |
2496 | /* Maybe flag this location as persistent. */ | |
2497 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2498 | bl->target_info.persist = 1; | |
2499 | } | |
2500 | ||
833b7ab5 YQ |
2501 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2502 | of breakpoint according to ADDR except single-step breakpoint. | |
2503 | Get the kind of single-step breakpoint according to the current | |
2504 | registers state. */ | |
cd6c3b4f YQ |
2505 | |
2506 | static int | |
2507 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2508 | { | |
833b7ab5 YQ |
2509 | if (bl->owner->type == bp_single_step) |
2510 | { | |
2511 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2512 | struct regcache *regcache; | |
2513 | ||
00431a78 | 2514 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2515 | |
2516 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2517 | regcache, addr); | |
2518 | } | |
2519 | else | |
2520 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2521 | } |
2522 | ||
35df4500 TJB |
2523 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2524 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2525 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2526 | Returns 0 for success, 1 if the bp_location type is not supported or |
2527 | -1 for failure. | |
879bfdc2 | 2528 | |
4a64f543 MS |
2529 | NOTE drow/2003-09-09: This routine could be broken down to an |
2530 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2531 | static int |
35df4500 | 2532 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2533 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2534 | int *disabled_breaks, |
dd61ec5c MW |
2535 | int *hw_breakpoint_error, |
2536 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2537 | { |
cc06b668 | 2538 | gdb_exception bp_excpt; |
879bfdc2 | 2539 | |
b775012e | 2540 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2541 | return 0; |
2542 | ||
35c63cd8 JB |
2543 | /* Note we don't initialize bl->target_info, as that wipes out |
2544 | the breakpoint location's shadow_contents if the breakpoint | |
2545 | is still inserted at that location. This in turn breaks | |
2546 | target_read_memory which depends on these buffers when | |
2547 | a memory read is requested at the breakpoint location: | |
2548 | Once the target_info has been wiped, we fail to see that | |
2549 | we have a breakpoint inserted at that address and thus | |
2550 | read the breakpoint instead of returning the data saved in | |
2551 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2552 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2553 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2554 | bl->target_info.length = bl->length; |
8181d85f | 2555 | |
b775012e LM |
2556 | /* When working with target-side conditions, we must pass all the conditions |
2557 | for the same breakpoint address down to the target since GDB will not | |
2558 | insert those locations. With a list of breakpoint conditions, the target | |
2559 | can decide when to stop and notify GDB. */ | |
2560 | ||
2561 | if (is_breakpoint (bl->owner)) | |
2562 | { | |
2563 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2564 | build_target_command_list (bl); |
2565 | /* Reset the modification marker. */ | |
b775012e LM |
2566 | bl->needs_update = 0; |
2567 | } | |
2568 | ||
7f32a4d5 PA |
2569 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2570 | set at a read-only address, then a breakpoint location will have | |
2571 | been changed to hardware breakpoint before we get here. If it is | |
2572 | "off" however, error out before actually trying to insert the | |
2573 | breakpoint, with a nicer error message. */ | |
35df4500 | 2574 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2575 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2576 | { |
7f32a4d5 | 2577 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2578 | |
7f32a4d5 PA |
2579 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2580 | { | |
6cb06a8c TT |
2581 | gdb_printf (tmp_error_stream, |
2582 | _("Cannot insert breakpoint %d.\n" | |
2583 | "Cannot set software breakpoint " | |
2584 | "at read-only address %s\n"), | |
2585 | bl->owner->number, | |
2586 | paddress (bl->gdbarch, bl->address)); | |
7f32a4d5 | 2587 | return 1; |
765dc015 | 2588 | } |
7f32a4d5 PA |
2589 | } |
2590 | ||
2591 | if (bl->loc_type == bp_loc_software_breakpoint | |
2592 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2593 | { | |
879bfdc2 DJ |
2594 | /* First check to see if we have to handle an overlay. */ |
2595 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2596 | || bl->section == NULL |
2597 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2598 | { |
2599 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2600 | try |
dd61ec5c | 2601 | { |
0000e5cc PA |
2602 | int val; |
2603 | ||
dd61ec5c | 2604 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2605 | if (val) |
688fca4f | 2606 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2607 | } |
94aeb44b | 2608 | catch (gdb_exception &e) |
dd61ec5c | 2609 | { |
94aeb44b | 2610 | bp_excpt = std::move (e); |
dd61ec5c | 2611 | } |
879bfdc2 DJ |
2612 | } |
2613 | else | |
2614 | { | |
4a64f543 | 2615 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2616 | Shall we set a breakpoint at the LMA? */ |
2617 | if (!overlay_events_enabled) | |
2618 | { | |
2619 | /* Yes -- overlay event support is not active, | |
2620 | so we must try to set a breakpoint at the LMA. | |
2621 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2622 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2623 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2624 | bl->owner->number); |
879bfdc2 DJ |
2625 | else |
2626 | { | |
35df4500 TJB |
2627 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2628 | bl->section); | |
879bfdc2 | 2629 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2630 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2631 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2632 | |
2633 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2634 | try |
0000e5cc PA |
2635 | { |
2636 | int val; | |
2637 | ||
579c6ad9 | 2638 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2639 | = breakpoint_kind (bl, &addr); |
2640 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2641 | val = target_insert_breakpoint (bl->gdbarch, |
2642 | &bl->overlay_target_info); | |
2643 | if (val) | |
688fca4f PA |
2644 | bp_excpt |
2645 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2646 | } |
94aeb44b | 2647 | catch (gdb_exception &e) |
0000e5cc | 2648 | { |
94aeb44b | 2649 | bp_excpt = std::move (e); |
0000e5cc PA |
2650 | } |
2651 | ||
688fca4f | 2652 | if (bp_excpt.reason != 0) |
6cb06a8c TT |
2653 | gdb_printf (tmp_error_stream, |
2654 | "Overlay breakpoint %d " | |
2655 | "failed: in ROM?\n", | |
2656 | bl->owner->number); | |
879bfdc2 DJ |
2657 | } |
2658 | } | |
2659 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2660 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2661 | { |
2662 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2663 | try |
dda83cd7 | 2664 | { |
0000e5cc PA |
2665 | int val; |
2666 | ||
dda83cd7 | 2667 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2668 | if (val) |
688fca4f | 2669 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2670 | } |
94aeb44b | 2671 | catch (gdb_exception &e) |
dda83cd7 | 2672 | { |
94aeb44b | 2673 | bp_excpt = std::move (e); |
dda83cd7 | 2674 | } |
879bfdc2 DJ |
2675 | } |
2676 | else | |
2677 | { | |
2678 | /* No. This breakpoint will not be inserted. | |
2679 | No error, but do not mark the bp as 'inserted'. */ | |
2680 | return 0; | |
2681 | } | |
2682 | } | |
2683 | ||
688fca4f | 2684 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2685 | { |
2686 | /* Can't set the breakpoint. */ | |
0000e5cc | 2687 | |
80dc83fd AB |
2688 | /* If the target has closed then it will have deleted any |
2689 | breakpoints inserted within the target inferior, as a result | |
2690 | any further attempts to interact with the breakpoint objects | |
2691 | is not possible. Just rethrow the error. */ | |
2692 | if (bp_excpt.error == TARGET_CLOSE_ERROR) | |
2693 | throw bp_excpt; | |
2694 | gdb_assert (bl->owner != nullptr); | |
2695 | ||
0000e5cc PA |
2696 | /* In some cases, we might not be able to insert a |
2697 | breakpoint in a shared library that has already been | |
2698 | removed, but we have not yet processed the shlib unload | |
2699 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2700 | breakpoint insertion themselves can't tell why the |
2701 | breakpoint insertion failed (e.g., the remote target | |
2702 | doesn't define error codes), so we must treat generic | |
2703 | errors as memory errors. */ | |
688fca4f PA |
2704 | if (bp_excpt.reason == RETURN_ERROR |
2705 | && (bp_excpt.error == GENERIC_ERROR | |
2706 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2707 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2708 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2709 | || shared_objfile_contains_address_p (bl->pspace, |
2710 | bl->address))) | |
879bfdc2 | 2711 | { |
4a64f543 | 2712 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2713 | bl->shlib_disabled = 1; |
76727919 | 2714 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2715 | if (!*disabled_breaks) |
2716 | { | |
6cb06a8c TT |
2717 | gdb_printf (tmp_error_stream, |
2718 | "Cannot insert breakpoint %d.\n", | |
2719 | bl->owner->number); | |
2720 | gdb_printf (tmp_error_stream, | |
2721 | "Temporarily disabling shared " | |
2722 | "library breakpoints:\n"); | |
3fbb6ffa TJB |
2723 | } |
2724 | *disabled_breaks = 1; | |
6cb06a8c TT |
2725 | gdb_printf (tmp_error_stream, |
2726 | "breakpoint #%d\n", bl->owner->number); | |
0000e5cc | 2727 | return 0; |
879bfdc2 DJ |
2728 | } |
2729 | else | |
879bfdc2 | 2730 | { |
35df4500 | 2731 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2732 | { |
0000e5cc | 2733 | *hw_breakpoint_error = 1; |
688fca4f | 2734 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
6cb06a8c TT |
2735 | gdb_printf (tmp_error_stream, |
2736 | "Cannot insert hardware breakpoint %d%s", | |
2737 | bl->owner->number, | |
2738 | bp_excpt.message ? ":" : ".\n"); | |
dda83cd7 | 2739 | if (bp_excpt.message != NULL) |
6cb06a8c TT |
2740 | gdb_printf (tmp_error_stream, "%s.\n", |
2741 | bp_excpt.what ()); | |
879bfdc2 DJ |
2742 | } |
2743 | else | |
2744 | { | |
688fca4f | 2745 | if (bp_excpt.message == NULL) |
0000e5cc | 2746 | { |
1ccbe998 | 2747 | std::string message |
0000e5cc PA |
2748 | = memory_error_message (TARGET_XFER_E_IO, |
2749 | bl->gdbarch, bl->address); | |
0000e5cc | 2750 | |
6cb06a8c TT |
2751 | gdb_printf (tmp_error_stream, |
2752 | "Cannot insert breakpoint %d.\n" | |
2753 | "%s\n", | |
2754 | bl->owner->number, message.c_str ()); | |
0000e5cc PA |
2755 | } |
2756 | else | |
2757 | { | |
6cb06a8c TT |
2758 | gdb_printf (tmp_error_stream, |
2759 | "Cannot insert breakpoint %d: %s\n", | |
2760 | bl->owner->number, | |
2761 | bp_excpt.what ()); | |
0000e5cc | 2762 | } |
879bfdc2 | 2763 | } |
0000e5cc | 2764 | return 1; |
879bfdc2 DJ |
2765 | |
2766 | } | |
2767 | } | |
2768 | else | |
35df4500 | 2769 | bl->inserted = 1; |
879bfdc2 | 2770 | |
0000e5cc | 2771 | return 0; |
879bfdc2 DJ |
2772 | } |
2773 | ||
35df4500 | 2774 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2775 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2776 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2777 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2778 | { |
0000e5cc PA |
2779 | int val; |
2780 | ||
77b06cd7 TJB |
2781 | gdb_assert (bl->owner->ops != NULL |
2782 | && bl->owner->ops->insert_location != NULL); | |
2783 | ||
2784 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2785 | |
2786 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2787 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2788 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 | 2789 | { |
85d721b8 PA |
2790 | /* But don't try to insert it, if there's already another |
2791 | hw_access location that would be considered a duplicate | |
2792 | of this one. */ | |
48d7020b | 2793 | for (bp_location *loc : all_bp_locations ()) |
35df4500 | 2794 | if (loc != bl |
85d721b8 | 2795 | && loc->watchpoint_type == hw_access |
35df4500 | 2796 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2797 | { |
35df4500 TJB |
2798 | bl->duplicate = 1; |
2799 | bl->inserted = 1; | |
2800 | bl->target_info = loc->target_info; | |
2801 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2802 | val = 0; |
2803 | break; | |
2804 | } | |
2805 | ||
2806 | if (val == 1) | |
2807 | { | |
77b06cd7 TJB |
2808 | bl->watchpoint_type = hw_access; |
2809 | val = bl->owner->ops->insert_location (bl); | |
2810 | ||
2811 | if (val) | |
2812 | /* Back to the original value. */ | |
2813 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2814 | } |
2815 | } | |
2816 | ||
35df4500 | 2817 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2818 | } |
2819 | ||
35df4500 | 2820 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2821 | { |
0000e5cc PA |
2822 | int val; |
2823 | ||
77b06cd7 TJB |
2824 | gdb_assert (bl->owner->ops != NULL |
2825 | && bl->owner->ops->insert_location != NULL); | |
2826 | ||
2827 | val = bl->owner->ops->insert_location (bl); | |
2828 | if (val) | |
2829 | { | |
2830 | bl->owner->enable_state = bp_disabled; | |
2831 | ||
2832 | if (val == 1) | |
2833 | warning (_("\ | |
2834 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2835 | of catchpoint."), bl->owner->number); | |
2836 | else | |
2837 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2838 | } | |
2839 | ||
2840 | bl->inserted = (val == 0); | |
1640b821 DJ |
2841 | |
2842 | /* We've already printed an error message if there was a problem | |
2843 | inserting this catchpoint, and we've disabled the catchpoint, | |
2844 | so just return success. */ | |
2845 | return 0; | |
879bfdc2 DJ |
2846 | } |
2847 | ||
2848 | return 0; | |
2849 | } | |
2850 | ||
6c95b8df PA |
2851 | /* This function is called when program space PSPACE is about to be |
2852 | deleted. It takes care of updating breakpoints to not reference | |
2853 | PSPACE anymore. */ | |
2854 | ||
2855 | void | |
2856 | breakpoint_program_space_exit (struct program_space *pspace) | |
2857 | { | |
6c95b8df | 2858 | /* Remove any breakpoint that was set through this program space. */ |
1428b37a SM |
2859 | for (breakpoint *b : all_breakpoints_safe ()) |
2860 | if (b->pspace == pspace) | |
2861 | delete_breakpoint (b); | |
6c95b8df PA |
2862 | |
2863 | /* Breakpoints set through other program spaces could have locations | |
2864 | bound to PSPACE as well. Remove those. */ | |
48d7020b | 2865 | for (bp_location *loc : all_bp_locations ()) |
6c95b8df PA |
2866 | { |
2867 | struct bp_location *tmp; | |
2868 | ||
2869 | if (loc->pspace == pspace) | |
2870 | { | |
2bdf28a0 | 2871 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2872 | if (loc->owner->loc == loc) |
2873 | loc->owner->loc = loc->next; | |
2874 | else | |
2875 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2876 | if (tmp->next == loc) | |
2877 | { | |
2878 | tmp->next = loc->next; | |
2879 | break; | |
2880 | } | |
2881 | } | |
2882 | } | |
2883 | ||
2884 | /* Now update the global location list to permanently delete the | |
2885 | removed locations above. */ | |
44702360 | 2886 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2887 | } |
2888 | ||
74960c60 VP |
2889 | /* Make sure all breakpoints are inserted in inferior. |
2890 | Throws exception on any error. | |
2891 | A breakpoint that is already inserted won't be inserted | |
2892 | again, so calling this function twice is safe. */ | |
2893 | void | |
2894 | insert_breakpoints (void) | |
2895 | { | |
43892fdf | 2896 | for (breakpoint *bpt : all_breakpoints ()) |
74960c60 | 2897 | if (is_hardware_watchpoint (bpt)) |
3a5c3e22 PA |
2898 | { |
2899 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2900 | ||
2901 | update_watchpoint (w, 0 /* don't reparse. */); | |
2902 | } | |
74960c60 | 2903 | |
04086b45 PA |
2904 | /* Updating watchpoints creates new locations, so update the global |
2905 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
2906 | ignore breakpoints_always_inserted_mode. Also, |
2907 | update_global_location_list tries to "upgrade" software | |
2908 | breakpoints to hardware breakpoints to handle "set breakpoint | |
2909 | auto-hw", so we need to call it even if we don't have new | |
2910 | locations. */ | |
04086b45 | 2911 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
2912 | } |
2913 | ||
b775012e LM |
2914 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2915 | target. It is the case with deleting and disabling of breakpoints when using | |
2916 | always-inserted mode. */ | |
2917 | ||
2918 | static void | |
2919 | update_inserted_breakpoint_locations (void) | |
2920 | { | |
b775012e LM |
2921 | int error_flag = 0; |
2922 | int val = 0; | |
2923 | int disabled_breaks = 0; | |
2924 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2925 | int hw_bp_details_reported = 0; |
b775012e | 2926 | |
d7e74731 | 2927 | string_file tmp_error_stream; |
b775012e LM |
2928 | |
2929 | /* Explicitly mark the warning -- this will only be printed if | |
2930 | there was an error. */ | |
d7e74731 | 2931 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2932 | |
5ed8105e | 2933 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e | 2934 | |
48d7020b | 2935 | for (bp_location *bl : all_bp_locations ()) |
b775012e LM |
2936 | { |
2937 | /* We only want to update software breakpoints and hardware | |
2938 | breakpoints. */ | |
2939 | if (!is_breakpoint (bl->owner)) | |
2940 | continue; | |
2941 | ||
2942 | /* We only want to update locations that are already inserted | |
2943 | and need updating. This is to avoid unwanted insertion during | |
2944 | deletion of breakpoints. */ | |
4daf1902 | 2945 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2946 | continue; |
2947 | ||
2948 | switch_to_program_space_and_thread (bl->pspace); | |
2949 | ||
2950 | /* For targets that support global breakpoints, there's no need | |
2951 | to select an inferior to insert breakpoint to. In fact, even | |
2952 | if we aren't attached to any process yet, we should still | |
2953 | insert breakpoints. */ | |
f5656ead | 2954 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 2955 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
2956 | continue; |
2957 | ||
d7e74731 | 2958 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2959 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2960 | if (val) |
2961 | error_flag = val; | |
2962 | } | |
2963 | ||
2964 | if (error_flag) | |
2965 | { | |
223ffa71 | 2966 | target_terminal::ours_for_output (); |
b775012e LM |
2967 | error_stream (tmp_error_stream); |
2968 | } | |
b775012e LM |
2969 | } |
2970 | ||
c30eee59 | 2971 | /* Used when starting or continuing the program. */ |
c906108c | 2972 | |
74960c60 VP |
2973 | static void |
2974 | insert_breakpoint_locations (void) | |
c906108c | 2975 | { |
eacd795a | 2976 | int error_flag = 0; |
c906108c | 2977 | int val = 0; |
3fbb6ffa | 2978 | int disabled_breaks = 0; |
81d0cc19 | 2979 | int hw_breakpoint_error = 0; |
dd61ec5c | 2980 | int hw_bp_error_explained_already = 0; |
c906108c | 2981 | |
d7e74731 PA |
2982 | string_file tmp_error_stream; |
2983 | ||
81d0cc19 GS |
2984 | /* Explicitly mark the warning -- this will only be printed if |
2985 | there was an error. */ | |
d7e74731 | 2986 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2987 | |
5ed8105e | 2988 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2989 | |
48d7020b | 2990 | for (bp_location *bl : all_bp_locations ()) |
879bfdc2 | 2991 | { |
b775012e | 2992 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2993 | continue; |
2994 | ||
4a64f543 MS |
2995 | /* There is no point inserting thread-specific breakpoints if |
2996 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2997 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2998 | if (bl->owner->thread != -1 |
5d5658a1 | 2999 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3000 | continue; |
3001 | ||
35df4500 | 3002 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3003 | |
3004 | /* For targets that support global breakpoints, there's no need | |
3005 | to select an inferior to insert breakpoint to. In fact, even | |
3006 | if we aren't attached to any process yet, we should still | |
3007 | insert breakpoints. */ | |
f5656ead | 3008 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3009 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3010 | continue; |
3011 | ||
d7e74731 | 3012 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3013 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3014 | if (val) |
eacd795a | 3015 | error_flag = val; |
879bfdc2 | 3016 | } |
c906108c | 3017 | |
4a64f543 MS |
3018 | /* If we failed to insert all locations of a watchpoint, remove |
3019 | them, as half-inserted watchpoint is of limited use. */ | |
43892fdf | 3020 | for (breakpoint *bpt : all_breakpoints ()) |
a5606eee VP |
3021 | { |
3022 | int some_failed = 0; | |
a5606eee VP |
3023 | |
3024 | if (!is_hardware_watchpoint (bpt)) | |
3025 | continue; | |
3026 | ||
d6b74ac4 | 3027 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3028 | continue; |
74960c60 VP |
3029 | |
3030 | if (bpt->disposition == disp_del_at_next_stop) | |
3031 | continue; | |
a5606eee | 3032 | |
40cb8ca5 | 3033 | for (bp_location *loc : bpt->locations ()) |
56710373 | 3034 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3035 | { |
3036 | some_failed = 1; | |
3037 | break; | |
3038 | } | |
40cb8ca5 | 3039 | |
a5606eee VP |
3040 | if (some_failed) |
3041 | { | |
40cb8ca5 | 3042 | for (bp_location *loc : bpt->locations ()) |
a5606eee | 3043 | if (loc->inserted) |
834c0d03 | 3044 | remove_breakpoint (loc); |
a5606eee VP |
3045 | |
3046 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3047 | tmp_error_stream.printf ("Could not insert " |
3048 | "hardware watchpoint %d.\n", | |
3049 | bpt->number); | |
eacd795a | 3050 | error_flag = -1; |
a5606eee VP |
3051 | } |
3052 | } | |
3053 | ||
eacd795a | 3054 | if (error_flag) |
81d0cc19 GS |
3055 | { |
3056 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3057 | message about possibly exhausted resources. */ |
dd61ec5c | 3058 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3059 | { |
d7e74731 | 3060 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3061 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3062 | } |
223ffa71 | 3063 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3064 | error_stream (tmp_error_stream); |
3065 | } | |
c906108c SS |
3066 | } |
3067 | ||
c30eee59 TJB |
3068 | /* Used when the program stops. |
3069 | Returns zero if successful, or non-zero if there was a problem | |
3070 | removing a breakpoint location. */ | |
3071 | ||
c906108c | 3072 | int |
fba45db2 | 3073 | remove_breakpoints (void) |
c906108c | 3074 | { |
3a1bae8e | 3075 | int val = 0; |
c906108c | 3076 | |
48d7020b | 3077 | for (bp_location *bl : all_bp_locations ()) |
1e4d1764 | 3078 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3079 | val |= remove_breakpoint (bl); |
01add95b | 3080 | |
3a1bae8e | 3081 | return val; |
c906108c SS |
3082 | } |
3083 | ||
49fa26b0 PA |
3084 | /* When a thread exits, remove breakpoints that are related to |
3085 | that thread. */ | |
3086 | ||
3087 | static void | |
3088 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3089 | { | |
1428b37a | 3090 | for (breakpoint *b : all_breakpoints_safe ()) |
49fa26b0 | 3091 | { |
5d5658a1 | 3092 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3093 | { |
3094 | b->disposition = disp_del_at_next_stop; | |
3095 | ||
6cb06a8c | 3096 | gdb_printf (_("\ |
43792cf0 | 3097 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
6cb06a8c | 3098 | b->number, print_thread_id (tp)); |
49fa26b0 PA |
3099 | |
3100 | /* Hide it from the user. */ | |
3101 | b->number = 0; | |
3102 | } | |
3103 | } | |
3104 | } | |
3105 | ||
f3869b1a | 3106 | /* See breakpoint.h. */ |
6c95b8df | 3107 | |
f3869b1a | 3108 | void |
00431a78 | 3109 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3110 | { |
6c95b8df | 3111 | int val; |
6c95b8df | 3112 | |
48d7020b | 3113 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3114 | { |
3115 | if (bl->pspace != inf->pspace) | |
3116 | continue; | |
6c95b8df | 3117 | |
01add95b SM |
3118 | if (bl->inserted && !bl->target_info.persist) |
3119 | { | |
3120 | val = remove_breakpoint (bl); | |
3121 | if (val != 0) | |
3122 | return; | |
3123 | } | |
3124 | } | |
6c95b8df PA |
3125 | } |
3126 | ||
e58b0e63 PA |
3127 | static int internal_breakpoint_number = -1; |
3128 | ||
84f4c1fe PM |
3129 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3130 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3131 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3132 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3133 | breakpoint_count and that value incremented. Internal breakpoints |
3134 | do not set the internal var bpnum. */ | |
3135 | static void | |
3136 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3137 | { | |
3138 | if (internal) | |
3139 | b->number = internal_breakpoint_number--; | |
3140 | else | |
3141 | { | |
3142 | set_breakpoint_count (breakpoint_count + 1); | |
3143 | b->number = breakpoint_count; | |
3144 | } | |
3145 | } | |
3146 | ||
e62c965a | 3147 | static struct breakpoint * |
a6d9a66e | 3148 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3149 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3150 | const struct breakpoint_ops *ops) |
e62c965a | 3151 | { |
51abb421 | 3152 | symtab_and_line sal; |
e62c965a PP |
3153 | sal.pc = address; |
3154 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3155 | sal.pspace = current_program_space; |
e62c965a | 3156 | |
51abb421 | 3157 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3158 | b->number = internal_breakpoint_number--; |
3159 | b->disposition = disp_donttouch; | |
3160 | ||
3161 | return b; | |
3162 | } | |
3163 | ||
17450429 PP |
3164 | static const char *const longjmp_names[] = |
3165 | { | |
3166 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3167 | }; | |
3168 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3169 | ||
3170 | /* Per-objfile data private to breakpoint.c. */ | |
3171 | struct breakpoint_objfile_data | |
3172 | { | |
3173 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
f6b3ad54 | 3174 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3175 | |
3176 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
f6b3ad54 | 3177 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3178 | |
28106bc2 | 3179 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3180 | int longjmp_searched = 0; |
28106bc2 | 3181 | |
45461e0d SM |
3182 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3183 | references. */ | |
3184 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3185 | |
17450429 | 3186 | /* Minimal symbol for "std::terminate()" (if any). */ |
f6b3ad54 | 3187 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3188 | |
3189 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
f6b3ad54 | 3190 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3191 | |
3192 | /* True if we have looked for exception probes. */ | |
43dce439 | 3193 | int exception_searched = 0; |
28106bc2 | 3194 | |
45461e0d SM |
3195 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3196 | references. */ | |
3197 | std::vector<probe *> exception_probes; | |
17450429 PP |
3198 | }; |
3199 | ||
51d3063a TT |
3200 | static const struct objfile_key<breakpoint_objfile_data> |
3201 | breakpoint_objfile_key; | |
17450429 PP |
3202 | |
3203 | /* Minimal symbol not found sentinel. */ | |
3204 | static struct minimal_symbol msym_not_found; | |
3205 | ||
3206 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3207 | ||
3208 | static int | |
3209 | msym_not_found_p (const struct minimal_symbol *msym) | |
3210 | { | |
3211 | return msym == &msym_not_found; | |
3212 | } | |
3213 | ||
3214 | /* Return per-objfile data needed by breakpoint.c. | |
3215 | Allocate the data if necessary. */ | |
3216 | ||
3217 | static struct breakpoint_objfile_data * | |
3218 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3219 | { | |
3220 | struct breakpoint_objfile_data *bp_objfile_data; | |
3221 | ||
51d3063a | 3222 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3223 | if (bp_objfile_data == NULL) |
51d3063a | 3224 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3225 | return bp_objfile_data; |
3226 | } | |
3227 | ||
e62c965a | 3228 | static void |
af02033e | 3229 | create_overlay_event_breakpoint (void) |
e62c965a | 3230 | { |
af02033e | 3231 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3232 | |
2030c079 | 3233 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3234 | { |
3235 | struct breakpoint *b; | |
17450429 PP |
3236 | struct breakpoint_objfile_data *bp_objfile_data; |
3237 | CORE_ADDR addr; | |
67994074 | 3238 | struct explicit_location explicit_loc; |
69de3c6a | 3239 | |
17450429 PP |
3240 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3241 | ||
3b7344d5 | 3242 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3243 | continue; |
3244 | ||
3b7344d5 | 3245 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3246 | { |
3b7344d5 | 3247 | struct bound_minimal_symbol m; |
17450429 PP |
3248 | |
3249 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3250 | if (m.minsym == NULL) |
17450429 PP |
3251 | { |
3252 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3253 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3254 | continue; |
3255 | } | |
3256 | bp_objfile_data->overlay_msym = m; | |
3257 | } | |
e62c965a | 3258 | |
4aeddc50 | 3259 | addr = bp_objfile_data->overlay_msym.value_address (); |
08feed99 | 3260 | b = create_internal_breakpoint (objfile->arch (), addr, |
dda83cd7 | 3261 | bp_overlay_event, |
06edf0c0 | 3262 | &internal_breakpoint_ops); |
67994074 KS |
3263 | initialize_explicit_location (&explicit_loc); |
3264 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3265 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3266 | |
69de3c6a | 3267 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3268 | { |
3269 | b->enable_state = bp_enabled; | |
3270 | overlay_events_enabled = 1; | |
3271 | } | |
69de3c6a PP |
3272 | else |
3273 | { | |
dda83cd7 SM |
3274 | b->enable_state = bp_disabled; |
3275 | overlay_events_enabled = 0; | |
69de3c6a | 3276 | } |
e62c965a | 3277 | } |
e62c965a PP |
3278 | } |
3279 | ||
2a7f6487 TV |
3280 | /* Install a master longjmp breakpoint for OBJFILE using a probe. Return |
3281 | true if a breakpoint was installed. */ | |
3282 | ||
3283 | static bool | |
3284 | create_longjmp_master_breakpoint_probe (objfile *objfile) | |
0fd8e87f | 3285 | { |
2a7f6487 TV |
3286 | struct gdbarch *gdbarch = objfile->arch (); |
3287 | struct breakpoint_objfile_data *bp_objfile_data | |
3288 | = get_breakpoint_objfile_data (objfile); | |
0fd8e87f | 3289 | |
2a7f6487 | 3290 | if (!bp_objfile_data->longjmp_searched) |
94c93c35 | 3291 | { |
2a7f6487 TV |
3292 | std::vector<probe *> ret |
3293 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
af02033e | 3294 | |
2a7f6487 | 3295 | if (!ret.empty ()) |
94c93c35 | 3296 | { |
2a7f6487 TV |
3297 | /* We are only interested in checking one element. */ |
3298 | probe *p = ret[0]; | |
0fd8e87f | 3299 | |
2a7f6487 TV |
3300 | if (!p->can_evaluate_arguments ()) |
3301 | { | |
3302 | /* We cannot use the probe interface here, | |
3303 | because it does not know how to evaluate | |
3304 | arguments. */ | |
3305 | ret.clear (); | |
3306 | } | |
3307 | } | |
3308 | bp_objfile_data->longjmp_probes = ret; | |
3309 | bp_objfile_data->longjmp_searched = 1; | |
3310 | } | |
0fd8e87f | 3311 | |
2a7f6487 TV |
3312 | if (bp_objfile_data->longjmp_probes.empty ()) |
3313 | return false; | |
17450429 | 3314 | |
2a7f6487 TV |
3315 | for (probe *p : bp_objfile_data->longjmp_probes) |
3316 | { | |
3317 | struct breakpoint *b; | |
25f9533e | 3318 | |
2a7f6487 TV |
3319 | b = create_internal_breakpoint (gdbarch, |
3320 | p->get_relocated_address (objfile), | |
3321 | bp_longjmp_master, | |
3322 | &internal_breakpoint_ops); | |
3323 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3324 | b->enable_state = bp_disabled; | |
3325 | } | |
aed57c53 | 3326 | |
2a7f6487 TV |
3327 | return true; |
3328 | } | |
25f9533e | 3329 | |
2a7f6487 TV |
3330 | /* Install master longjmp breakpoints for OBJFILE using longjmp_names. |
3331 | Return true if at least one breakpoint was installed. */ | |
3332 | ||
3333 | static bool | |
3334 | create_longjmp_master_breakpoint_names (objfile *objfile) | |
3335 | { | |
3336 | struct gdbarch *gdbarch = objfile->arch (); | |
3337 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
3338 | return false; | |
3339 | ||
3340 | struct breakpoint_objfile_data *bp_objfile_data | |
3341 | = get_breakpoint_objfile_data (objfile); | |
3342 | unsigned int installed_bp = 0; | |
3343 | ||
3344 | for (int i = 0; i < NUM_LONGJMP_NAMES; i++) | |
3345 | { | |
3346 | struct breakpoint *b; | |
3347 | const char *func_name; | |
3348 | CORE_ADDR addr; | |
3349 | struct explicit_location explicit_loc; | |
3350 | ||
3351 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) | |
3352 | continue; | |
28106bc2 | 3353 | |
2a7f6487 TV |
3354 | func_name = longjmp_names[i]; |
3355 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3356 | { | |
3357 | struct bound_minimal_symbol m; | |
3358 | ||
3359 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3360 | if (m.minsym == NULL) | |
3361 | { | |
3362 | /* Prevent future lookups in this objfile. */ | |
3363 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
94c93c35 TT |
3364 | continue; |
3365 | } | |
2a7f6487 TV |
3366 | bp_objfile_data->longjmp_msym[i] = m; |
3367 | } | |
28106bc2 | 3368 | |
4aeddc50 | 3369 | addr = bp_objfile_data->longjmp_msym[i].value_address (); |
2a7f6487 TV |
3370 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3371 | &internal_breakpoint_ops); | |
3372 | initialize_explicit_location (&explicit_loc); | |
3373 | explicit_loc.function_name = ASTRDUP (func_name); | |
3374 | b->location = new_explicit_location (&explicit_loc); | |
3375 | b->enable_state = bp_disabled; | |
3376 | installed_bp++; | |
3377 | } | |
28106bc2 | 3378 | |
2a7f6487 TV |
3379 | return installed_bp > 0; |
3380 | } | |
0fd8e87f | 3381 | |
2a7f6487 | 3382 | /* Create a master longjmp breakpoint. */ |
17450429 | 3383 | |
2a7f6487 TV |
3384 | static void |
3385 | create_longjmp_master_breakpoint (void) | |
3386 | { | |
3387 | scoped_restore_current_program_space restore_pspace; | |
aed57c53 | 3388 | |
2a7f6487 TV |
3389 | for (struct program_space *pspace : program_spaces) |
3390 | { | |
3391 | set_current_program_space (pspace); | |
17450429 | 3392 | |
2a7f6487 TV |
3393 | for (objfile *obj : current_program_space->objfiles ()) |
3394 | { | |
3395 | /* Skip separate debug object, it's handled in the loop below. */ | |
3396 | if (obj->separate_debug_objfile_backlink != nullptr) | |
3397 | continue; | |
3398 | ||
3399 | /* Try a probe kind breakpoint on main objfile. */ | |
3400 | if (create_longjmp_master_breakpoint_probe (obj)) | |
3401 | continue; | |
3402 | ||
3403 | /* Try longjmp_names kind breakpoints on main and separate_debug | |
3404 | objfiles. */ | |
3405 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3406 | if (create_longjmp_master_breakpoint_names (debug_objfile)) | |
3407 | break; | |
94c93c35 TT |
3408 | } |
3409 | } | |
0fd8e87f UW |
3410 | } |
3411 | ||
af02033e | 3412 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3413 | static void |
af02033e | 3414 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3415 | { |
af02033e | 3416 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3417 | |
5ed8105e | 3418 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3419 | |
94c93c35 TT |
3420 | for (struct program_space *pspace : program_spaces) |
3421 | { | |
3422 | CORE_ADDR addr; | |
17450429 | 3423 | |
94c93c35 | 3424 | set_current_program_space (pspace); |
17450429 | 3425 | |
94c93c35 TT |
3426 | for (objfile *objfile : current_program_space->objfiles ()) |
3427 | { | |
3428 | struct breakpoint *b; | |
3429 | struct breakpoint_objfile_data *bp_objfile_data; | |
3430 | struct explicit_location explicit_loc; | |
aa7d318d | 3431 | |
94c93c35 | 3432 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3433 | |
94c93c35 TT |
3434 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3435 | continue; | |
17450429 | 3436 | |
94c93c35 TT |
3437 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3438 | { | |
3439 | struct bound_minimal_symbol m; | |
17450429 | 3440 | |
94c93c35 | 3441 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
60f62e2b SM |
3442 | if (m.minsym == NULL || (m.minsym->type () != mst_text |
3443 | && m.minsym->type () != mst_file_text)) | |
94c93c35 TT |
3444 | { |
3445 | /* Prevent future lookups in this objfile. */ | |
3446 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3447 | continue; | |
3448 | } | |
3449 | bp_objfile_data->terminate_msym = m; | |
3450 | } | |
aa7d318d | 3451 | |
4aeddc50 | 3452 | addr = bp_objfile_data->terminate_msym.value_address (); |
94c93c35 TT |
3453 | b = create_internal_breakpoint (objfile->arch (), addr, |
3454 | bp_std_terminate_master, | |
3455 | &internal_breakpoint_ops); | |
3456 | initialize_explicit_location (&explicit_loc); | |
3457 | explicit_loc.function_name = ASTRDUP (func_name); | |
3458 | b->location = new_explicit_location (&explicit_loc); | |
3459 | b->enable_state = bp_disabled; | |
3460 | } | |
3461 | } | |
aa7d318d TT |
3462 | } |
3463 | ||
1940319c TV |
3464 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using a |
3465 | probe. Return true if a breakpoint was installed. */ | |
186c406b | 3466 | |
1940319c TV |
3467 | static bool |
3468 | create_exception_master_breakpoint_probe (objfile *objfile) | |
186c406b | 3469 | { |
1940319c TV |
3470 | struct breakpoint *b; |
3471 | struct gdbarch *gdbarch; | |
3472 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3473 | |
1940319c | 3474 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3475 | |
1940319c TV |
3476 | /* We prefer the SystemTap probe point if it exists. */ |
3477 | if (!bp_objfile_data->exception_searched) | |
3478 | { | |
3479 | std::vector<probe *> ret | |
3480 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
17450429 | 3481 | |
1940319c | 3482 | if (!ret.empty ()) |
28106bc2 | 3483 | { |
1940319c TV |
3484 | /* We are only interested in checking one element. */ |
3485 | probe *p = ret[0]; | |
25f9533e | 3486 | |
1940319c | 3487 | if (!p->can_evaluate_arguments ()) |
25f9533e | 3488 | { |
1940319c TV |
3489 | /* We cannot use the probe interface here, because it does |
3490 | not know how to evaluate arguments. */ | |
3491 | ret.clear (); | |
25f9533e | 3492 | } |
28106bc2 | 3493 | } |
1940319c TV |
3494 | bp_objfile_data->exception_probes = ret; |
3495 | bp_objfile_data->exception_searched = 1; | |
3496 | } | |
28106bc2 | 3497 | |
1940319c TV |
3498 | if (bp_objfile_data->exception_probes.empty ()) |
3499 | return false; | |
45461e0d | 3500 | |
1940319c | 3501 | gdbarch = objfile->arch (); |
28106bc2 | 3502 | |
1940319c TV |
3503 | for (probe *p : bp_objfile_data->exception_probes) |
3504 | { | |
3505 | b = create_internal_breakpoint (gdbarch, | |
3506 | p->get_relocated_address (objfile), | |
3507 | bp_exception_master, | |
3508 | &internal_breakpoint_ops); | |
3509 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); | |
3510 | b->enable_state = bp_disabled; | |
3511 | } | |
28106bc2 | 3512 | |
1940319c TV |
3513 | return true; |
3514 | } | |
28106bc2 | 3515 | |
1940319c TV |
3516 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using |
3517 | _Unwind_DebugHook. Return true if a breakpoint was installed. */ | |
17450429 | 3518 | |
1940319c TV |
3519 | static bool |
3520 | create_exception_master_breakpoint_hook (objfile *objfile) | |
3521 | { | |
3522 | const char *const func_name = "_Unwind_DebugHook"; | |
3523 | struct breakpoint *b; | |
3524 | struct gdbarch *gdbarch; | |
3525 | struct breakpoint_objfile_data *bp_objfile_data; | |
3526 | CORE_ADDR addr; | |
3527 | struct explicit_location explicit_loc; | |
186c406b | 3528 | |
1940319c | 3529 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
186c406b | 3530 | |
1940319c TV |
3531 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
3532 | return false; | |
17450429 | 3533 | |
1940319c TV |
3534 | gdbarch = objfile->arch (); |
3535 | ||
3536 | if (bp_objfile_data->exception_msym.minsym == NULL) | |
3537 | { | |
3538 | struct bound_minimal_symbol debug_hook; | |
3539 | ||
3540 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); | |
3541 | if (debug_hook.minsym == NULL) | |
3542 | { | |
3543 | bp_objfile_data->exception_msym.minsym = &msym_not_found; | |
3544 | return false; | |
186c406b | 3545 | } |
17450429 | 3546 | |
1940319c TV |
3547 | bp_objfile_data->exception_msym = debug_hook; |
3548 | } | |
3549 | ||
4aeddc50 | 3550 | addr = bp_objfile_data->exception_msym.value_address (); |
328d42d8 SM |
3551 | addr = gdbarch_convert_from_func_ptr_addr |
3552 | (gdbarch, addr, current_inferior ()->top_target ()); | |
1940319c TV |
3553 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3554 | &internal_breakpoint_ops); | |
3555 | initialize_explicit_location (&explicit_loc); | |
3556 | explicit_loc.function_name = ASTRDUP (func_name); | |
3557 | b->location = new_explicit_location (&explicit_loc); | |
3558 | b->enable_state = bp_disabled; | |
3559 | ||
3560 | return true; | |
3561 | } | |
3562 | ||
3563 | /* Install a master breakpoint on the unwinder's debug hook. */ | |
3564 | ||
3565 | static void | |
3566 | create_exception_master_breakpoint (void) | |
3567 | { | |
3568 | for (objfile *obj : current_program_space->objfiles ()) | |
3569 | { | |
3570 | /* Skip separate debug object. */ | |
3571 | if (obj->separate_debug_objfile_backlink) | |
3572 | continue; | |
3573 | ||
3574 | /* Try a probe kind breakpoint. */ | |
3575 | if (create_exception_master_breakpoint_probe (obj)) | |
3576 | continue; | |
3577 | ||
7c6944ab TV |
3578 | /* Iterate over main and separate debug objects and try an |
3579 | _Unwind_DebugHook kind breakpoint. */ | |
3580 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3581 | if (create_exception_master_breakpoint_hook (debug_objfile)) | |
1940319c | 3582 | break; |
186c406b | 3583 | } |
186c406b TT |
3584 | } |
3585 | ||
9ef9e6a6 KS |
3586 | /* Does B have a location spec? */ |
3587 | ||
3588 | static int | |
3589 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3590 | { | |
d28cd78a | 3591 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3592 | } |
3593 | ||
c906108c | 3594 | void |
fba45db2 | 3595 | update_breakpoints_after_exec (void) |
c906108c | 3596 | { |
25b22b0a PA |
3597 | /* We're about to delete breakpoints from GDB's lists. If the |
3598 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3599 | writing the breakpoints' "shadow contents" back into memory. The | |
3600 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3601 | do that. Instead, the target is responsible from marking | |
3602 | breakpoints out as soon as it detects an exec. We don't do that | |
3603 | here instead, because there may be other attempts to delete | |
3604 | breakpoints after detecting an exec and before reaching here. */ | |
48d7020b | 3605 | for (bp_location *bploc : all_bp_locations ()) |
6c95b8df PA |
3606 | if (bploc->pspace == current_program_space) |
3607 | gdb_assert (!bploc->inserted); | |
c906108c | 3608 | |
1428b37a | 3609 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3610 | { |
3611 | if (b->pspace != current_program_space) | |
c5aa993b | 3612 | continue; |
c906108c | 3613 | |
01add95b SM |
3614 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
3615 | if (b->type == bp_shlib_event) | |
3616 | { | |
3617 | delete_breakpoint (b); | |
3618 | continue; | |
3619 | } | |
4efc6507 | 3620 | |
01add95b SM |
3621 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
3622 | if (b->type == bp_jit_event) | |
3623 | { | |
3624 | delete_breakpoint (b); | |
3625 | continue; | |
3626 | } | |
c4093a6a | 3627 | |
01add95b SM |
3628 | /* Thread event breakpoints must be set anew after an exec(), |
3629 | as must overlay event and longjmp master breakpoints. */ | |
3630 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
3631 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master | |
3632 | || b->type == bp_exception_master) | |
3633 | { | |
3634 | delete_breakpoint (b); | |
3635 | continue; | |
3636 | } | |
c5aa993b | 3637 | |
01add95b SM |
3638 | /* Step-resume breakpoints are meaningless after an exec(). */ |
3639 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) | |
3640 | { | |
3641 | delete_breakpoint (b); | |
3642 | continue; | |
3643 | } | |
7c16b83e | 3644 | |
01add95b SM |
3645 | /* Just like single-step breakpoints. */ |
3646 | if (b->type == bp_single_step) | |
3647 | { | |
3648 | delete_breakpoint (b); | |
3649 | continue; | |
3650 | } | |
611c83ae | 3651 | |
01add95b SM |
3652 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3653 | after an exec. */ | |
3654 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume | |
3655 | || b->type == bp_longjmp_call_dummy | |
3656 | || b->type == bp_exception || b->type == bp_exception_resume) | |
3657 | { | |
3658 | delete_breakpoint (b); | |
3659 | continue; | |
3660 | } | |
ce78b96d | 3661 | |
01add95b SM |
3662 | if (b->type == bp_catchpoint) |
3663 | { | |
3664 | /* For now, none of the bp_catchpoint breakpoints need to | |
3665 | do anything at this point. In the future, if some of | |
3666 | the catchpoints need to something, we will need to add | |
3667 | a new method, and call this method from here. */ | |
3668 | continue; | |
3669 | } | |
c5aa993b | 3670 | |
01add95b SM |
3671 | /* bp_finish is a special case. The only way we ought to be able |
3672 | to see one of these when an exec() has happened, is if the user | |
3673 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3674 | carries them to the call-site of the current callee, by setting | |
3675 | a temporary bp there and resuming. But in this case, the finish | |
3676 | will carry them entirely through the vfork & exec. | |
3677 | ||
3678 | We don't want to allow a bp_finish to remain inserted now. But | |
3679 | we can't safely delete it, 'cause finish_command has a handle to | |
3680 | the bp on a bpstat, and will later want to delete it. There's a | |
3681 | chance (and I've seen it happen) that if we delete the bp_finish | |
3682 | here, that its storage will get reused by the time finish_command | |
3683 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3684 | We really must allow finish_command to delete a bp_finish. | |
3685 | ||
3686 | In the absence of a general solution for the "how do we know | |
3687 | it's safe to delete something others may have handles to?" | |
3688 | problem, what we'll do here is just uninsert the bp_finish, and | |
3689 | let finish_command delete it. | |
3690 | ||
3691 | (We know the bp_finish is "doomed" in the sense that it's | |
3692 | momentary, and will be deleted as soon as finish_command sees | |
3693 | the inferior stopped. So it doesn't matter that the bp's | |
3694 | address is probably bogus in the new a.out, unlike e.g., the | |
3695 | solib breakpoints.) */ | |
3696 | ||
3697 | if (b->type == bp_finish) | |
3698 | { | |
3699 | continue; | |
3700 | } | |
3701 | ||
3702 | /* Without a symbolic address, we have little hope of the | |
3703 | pre-exec() address meaning the same thing in the post-exec() | |
3704 | a.out. */ | |
3705 | if (breakpoint_event_location_empty_p (b)) | |
3706 | { | |
3707 | delete_breakpoint (b); | |
3708 | continue; | |
3709 | } | |
3710 | } | |
c906108c SS |
3711 | } |
3712 | ||
3713 | int | |
d80ee84f | 3714 | detach_breakpoints (ptid_t ptid) |
c906108c | 3715 | { |
3a1bae8e | 3716 | int val = 0; |
2989a365 | 3717 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3718 | struct inferior *inf = current_inferior (); |
c5aa993b | 3719 | |
e99b03dc | 3720 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3721 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3722 | |
6c95b8df | 3723 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3724 | inferior_ptid = ptid; |
48d7020b | 3725 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3726 | { |
3727 | if (bl->pspace != inf->pspace) | |
3728 | continue; | |
3729 | ||
3730 | /* This function must physically remove breakpoints locations | |
3731 | from the specified ptid, without modifying the breakpoint | |
3732 | package's state. Locations of type bp_loc_other are only | |
3733 | maintained at GDB side. So, there is no need to remove | |
3734 | these bp_loc_other locations. Moreover, removing these | |
3735 | would modify the breakpoint package's state. */ | |
3736 | if (bl->loc_type == bp_loc_other) | |
3737 | continue; | |
3738 | ||
3739 | if (bl->inserted) | |
3740 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); | |
3741 | } | |
d03285ec | 3742 | |
3a1bae8e | 3743 | return val; |
c906108c SS |
3744 | } |
3745 | ||
35df4500 | 3746 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3747 | Note that this is used to detach breakpoints from a child fork. |
3748 | When we get here, the child isn't in the inferior list, and neither | |
3749 | do we have objects to represent its address space --- we should | |
35df4500 | 3750 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3751 | |
c906108c | 3752 | static int |
b2b6a7da | 3753 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3754 | { |
3755 | int val; | |
c5aa993b | 3756 | |
35df4500 TJB |
3757 | /* BL is never in moribund_locations by our callers. */ |
3758 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3759 | |
74960c60 VP |
3760 | /* The type of none suggests that owner is actually deleted. |
3761 | This should not ever happen. */ | |
35df4500 | 3762 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3763 | |
35df4500 TJB |
3764 | if (bl->loc_type == bp_loc_software_breakpoint |
3765 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3766 | { |
c02f5703 MS |
3767 | /* "Normal" instruction breakpoint: either the standard |
3768 | trap-instruction bp (bp_breakpoint), or a | |
3769 | bp_hardware_breakpoint. */ | |
3770 | ||
3771 | /* First check to see if we have to handle an overlay. */ | |
3772 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3773 | || bl->section == NULL |
3774 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3775 | { |
3776 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3777 | |
3778 | /* If we're trying to uninsert a memory breakpoint that we | |
3779 | know is set in a dynamic object that is marked | |
3780 | shlib_disabled, then either the dynamic object was | |
3781 | removed with "remove-symbol-file" or with | |
3782 | "nosharedlibrary". In the former case, we don't know | |
3783 | whether another dynamic object might have loaded over the | |
3784 | breakpoint's address -- the user might well let us know | |
3785 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3786 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3787 | list of dynamically loaded objects). If we have the |
3788 | breakpoint's shadow memory, that is, this is a software | |
3789 | breakpoint managed by GDB, check whether the breakpoint | |
3790 | is still inserted in memory, to avoid overwriting wrong | |
3791 | code with stale saved shadow contents. Note that HW | |
3792 | breakpoints don't have shadow memory, as they're | |
3793 | implemented using a mechanism that is not dependent on | |
3794 | being able to modify the target's memory, and as such | |
3795 | they should always be removed. */ | |
3796 | if (bl->shlib_disabled | |
3797 | && bl->target_info.shadow_len != 0 | |
3798 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3799 | val = 0; | |
3800 | else | |
73971819 | 3801 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3802 | } |
c906108c SS |
3803 | else |
3804 | { | |
4a64f543 | 3805 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3806 | Did we set a breakpoint at the LMA? */ |
3807 | if (!overlay_events_enabled) | |
3808 | { | |
3809 | /* Yes -- overlay event support is not active, so we | |
3810 | should have set a breakpoint at the LMA. Remove it. | |
3811 | */ | |
c02f5703 MS |
3812 | /* Ignore any failures: if the LMA is in ROM, we will |
3813 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3814 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3815 | target_remove_hw_breakpoint (bl->gdbarch, | |
3816 | &bl->overlay_target_info); | |
c02f5703 | 3817 | else |
35df4500 | 3818 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3819 | &bl->overlay_target_info, |
3820 | reason); | |
c02f5703 MS |
3821 | } |
3822 | /* Did we set a breakpoint at the VMA? | |
3823 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3824 | if (bl->inserted) |
c906108c | 3825 | { |
c02f5703 MS |
3826 | /* Yes -- remove it. Previously we did not bother to |
3827 | remove the breakpoint if the section had been | |
3828 | unmapped, but let's not rely on that being safe. We | |
3829 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3830 | |
3831 | /* However, we should remove *software* breakpoints only | |
3832 | if the section is still mapped, or else we overwrite | |
3833 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3834 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3835 | || section_is_mapped (bl->section)) | |
73971819 | 3836 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3837 | else |
3838 | val = 0; | |
c906108c | 3839 | } |
c02f5703 MS |
3840 | else |
3841 | { | |
3842 | /* No -- not inserted, so no need to remove. No error. */ | |
3843 | val = 0; | |
3844 | } | |
c906108c | 3845 | } |
879d1e6b | 3846 | |
08351840 PA |
3847 | /* In some cases, we might not be able to remove a breakpoint in |
3848 | a shared library that has already been removed, but we have | |
3849 | not yet processed the shlib unload event. Similarly for an | |
3850 | unloaded add-symbol-file object - the user might not yet have | |
3851 | had the chance to remove-symbol-file it. shlib_disabled will | |
3852 | be set if the library/object has already been removed, but | |
3853 | the breakpoint hasn't been uninserted yet, e.g., after | |
3854 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3855 | always-inserted mode. */ | |
076855f9 | 3856 | if (val |
08351840 PA |
3857 | && (bl->loc_type == bp_loc_software_breakpoint |
3858 | && (bl->shlib_disabled | |
3859 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3860 | || shared_objfile_contains_address_p (bl->pspace, |
3861 | bl->address)))) | |
879d1e6b UW |
3862 | val = 0; |
3863 | ||
c906108c SS |
3864 | if (val) |
3865 | return val; | |
b2b6a7da | 3866 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3867 | } |
35df4500 | 3868 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3869 | { |
77b06cd7 TJB |
3870 | gdb_assert (bl->owner->ops != NULL |
3871 | && bl->owner->ops->remove_location != NULL); | |
3872 | ||
b2b6a7da | 3873 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3874 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3875 | |
c906108c | 3876 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3877 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3878 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3879 | bl->owner->number); |
c906108c | 3880 | } |
35df4500 | 3881 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
3882 | && breakpoint_enabled (bl->owner) |
3883 | && !bl->duplicate) | |
ce78b96d | 3884 | { |
77b06cd7 TJB |
3885 | gdb_assert (bl->owner->ops != NULL |
3886 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3887 | |
73971819 | 3888 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3889 | if (val) |
3890 | return val; | |
77b06cd7 | 3891 | |
b2b6a7da | 3892 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3893 | } |
c906108c SS |
3894 | |
3895 | return 0; | |
3896 | } | |
3897 | ||
6c95b8df | 3898 | static int |
834c0d03 | 3899 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3900 | { |
35df4500 TJB |
3901 | /* BL is never in moribund_locations by our callers. */ |
3902 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3903 | |
6c95b8df PA |
3904 | /* The type of none suggests that owner is actually deleted. |
3905 | This should not ever happen. */ | |
35df4500 | 3906 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3907 | |
5ed8105e | 3908 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3909 | |
35df4500 | 3910 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3911 | |
5ed8105e | 3912 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3913 | } |
3914 | ||
c906108c SS |
3915 | /* Clear the "inserted" flag in all breakpoints. */ |
3916 | ||
25b22b0a | 3917 | void |
fba45db2 | 3918 | mark_breakpoints_out (void) |
c906108c | 3919 | { |
48d7020b | 3920 | for (bp_location *bl : all_bp_locations ()) |
66c4b3e8 | 3921 | if (bl->pspace == current_program_space) |
35df4500 | 3922 | bl->inserted = 0; |
c906108c SS |
3923 | } |
3924 | ||
53a5351d JM |
3925 | /* Clear the "inserted" flag in all breakpoints and delete any |
3926 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3927 | |
3928 | Plus other such housekeeping that has to be done for breakpoints | |
3929 | between runs. | |
3930 | ||
53a5351d JM |
3931 | Note: this function gets called at the end of a run (by |
3932 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3933 | init_wait_for_inferior). */ |
c906108c SS |
3934 | |
3935 | ||
3936 | ||
3937 | void | |
fba45db2 | 3938 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3939 | { |
6c95b8df | 3940 | struct program_space *pspace = current_program_space; |
c906108c | 3941 | |
50c71eaf PA |
3942 | /* If breakpoint locations are shared across processes, then there's |
3943 | nothing to do. */ | |
f5656ead | 3944 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3945 | return; |
3946 | ||
1a853c52 | 3947 | mark_breakpoints_out (); |
075f6582 | 3948 | |
1428b37a | 3949 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3950 | { |
3951 | if (b->loc && b->loc->pspace != pspace) | |
3952 | continue; | |
6c95b8df | 3953 | |
01add95b SM |
3954 | switch (b->type) |
3955 | { | |
3956 | case bp_call_dummy: | |
3957 | case bp_longjmp_call_dummy: | |
c906108c | 3958 | |
01add95b SM |
3959 | /* If the call dummy breakpoint is at the entry point it will |
3960 | cause problems when the inferior is rerun, so we better get | |
3961 | rid of it. */ | |
ab92d69b | 3962 | |
01add95b | 3963 | case bp_watchpoint_scope: |
ab92d69b | 3964 | |
01add95b | 3965 | /* Also get rid of scope breakpoints. */ |
ab92d69b | 3966 | |
01add95b | 3967 | case bp_shlib_event: |
ab92d69b | 3968 | |
01add95b SM |
3969 | /* Also remove solib event breakpoints. Their addresses may |
3970 | have changed since the last time we ran the program. | |
3971 | Actually we may now be debugging against different target; | |
3972 | and so the solib backend that installed this breakpoint may | |
3973 | not be used in by the target. E.g., | |
ab92d69b | 3974 | |
01add95b SM |
3975 | (gdb) file prog-linux |
3976 | (gdb) run # native linux target | |
3977 | ... | |
3978 | (gdb) kill | |
3979 | (gdb) file prog-win.exe | |
3980 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3981 | */ | |
c906108c | 3982 | |
01add95b | 3983 | case bp_step_resume: |
f59f708a | 3984 | |
01add95b | 3985 | /* Also remove step-resume breakpoints. */ |
f59f708a | 3986 | |
01add95b | 3987 | case bp_single_step: |
7c16b83e | 3988 | |
01add95b | 3989 | /* Also remove single-step breakpoints. */ |
7c16b83e | 3990 | |
01add95b SM |
3991 | delete_breakpoint (b); |
3992 | break; | |
c906108c | 3993 | |
01add95b SM |
3994 | case bp_watchpoint: |
3995 | case bp_hardware_watchpoint: | |
3996 | case bp_read_watchpoint: | |
3997 | case bp_access_watchpoint: | |
3998 | { | |
3999 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4000 | |
01add95b SM |
4001 | /* Likewise for watchpoints on local expressions. */ |
4002 | if (w->exp_valid_block != NULL) | |
4003 | delete_breakpoint (b); | |
4004 | else | |
4005 | { | |
4006 | /* Get rid of existing locations, which are no longer | |
4007 | valid. New ones will be created in | |
4008 | update_watchpoint, when the inferior is restarted. | |
4009 | The next update_global_location_list call will | |
4010 | garbage collect them. */ | |
4011 | b->loc = NULL; | |
4012 | ||
4013 | if (context == inf_starting) | |
4014 | { | |
4015 | /* Reset val field to force reread of starting value in | |
4016 | insert_breakpoints. */ | |
4017 | w->val.reset (nullptr); | |
4018 | w->val_valid = false; | |
4019 | } | |
4020 | } | |
4021 | } | |
4022 | break; | |
4023 | default: | |
4024 | break; | |
3a5c3e22 | 4025 | } |
01add95b | 4026 | } |
1c5cfe86 PA |
4027 | |
4028 | /* Get rid of the moribund locations. */ | |
1123588c | 4029 | for (bp_location *bl : moribund_locations) |
35df4500 | 4030 | decref_bp_location (&bl); |
1123588c | 4031 | moribund_locations.clear (); |
c906108c SS |
4032 | } |
4033 | ||
6c95b8df PA |
4034 | /* These functions concern about actual breakpoints inserted in the |
4035 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4036 | we need to hop over the bkpt --- so we check for address space | |
4037 | match, not program space. */ | |
4038 | ||
c2c6d25f JM |
4039 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4040 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4041 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4042 | permanent breakpoint. | |
4043 | - When continuing from a location with an ordinary breakpoint, we | |
4044 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4045 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4046 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4047 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4048 | |
c2c6d25f | 4049 | enum breakpoint_here |
accd0bcd | 4050 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4051 | { |
c2c6d25f | 4052 | int any_breakpoint_here = 0; |
c906108c | 4053 | |
48d7020b | 4054 | for (bp_location *bl : all_bp_locations ()) |
075f6582 | 4055 | { |
35df4500 TJB |
4056 | if (bl->loc_type != bp_loc_software_breakpoint |
4057 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4058 | continue; |
4059 | ||
f1310107 | 4060 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4061 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4062 | || bl->permanent) |
f1310107 | 4063 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4064 | { |
4065 | if (overlay_debugging | |
35df4500 TJB |
4066 | && section_is_overlay (bl->section) |
4067 | && !section_is_mapped (bl->section)) | |
075f6582 | 4068 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4069 | else if (bl->permanent) |
075f6582 DJ |
4070 | return permanent_breakpoint_here; |
4071 | else | |
4072 | any_breakpoint_here = 1; | |
4073 | } | |
4074 | } | |
c906108c | 4075 | |
f486487f | 4076 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4077 | } |
4078 | ||
d35ae833 PA |
4079 | /* See breakpoint.h. */ |
4080 | ||
4081 | int | |
accd0bcd | 4082 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4083 | CORE_ADDR addr, ULONGEST len) |
4084 | { | |
48d7020b | 4085 | for (bp_location *bl : all_bp_locations ()) |
d35ae833 PA |
4086 | { |
4087 | if (bl->loc_type != bp_loc_software_breakpoint | |
4088 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4089 | continue; | |
4090 | ||
4091 | if ((breakpoint_enabled (bl->owner) | |
4092 | || bl->permanent) | |
4093 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4094 | addr, len)) | |
4095 | { | |
4096 | if (overlay_debugging | |
4097 | && section_is_overlay (bl->section) | |
4098 | && !section_is_mapped (bl->section)) | |
4099 | { | |
4100 | /* Unmapped overlay -- can't be a match. */ | |
4101 | continue; | |
4102 | } | |
4103 | ||
4104 | return 1; | |
4105 | } | |
4106 | } | |
4107 | ||
4108 | return 0; | |
4109 | } | |
4110 | ||
1c5cfe86 PA |
4111 | /* Return true if there's a moribund breakpoint at PC. */ |
4112 | ||
4113 | int | |
accd0bcd | 4114 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4115 | { |
1123588c | 4116 | for (bp_location *loc : moribund_locations) |
f1310107 | 4117 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4118 | return 1; |
4119 | ||
4120 | return 0; | |
4121 | } | |
c2c6d25f | 4122 | |
f7ce857f PA |
4123 | /* Returns non-zero iff BL is inserted at PC, in address space |
4124 | ASPACE. */ | |
4125 | ||
4126 | static int | |
4127 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4128 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4129 | { |
4130 | if (bl->inserted | |
4131 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4132 | aspace, pc)) | |
4133 | { | |
4134 | if (overlay_debugging | |
4135 | && section_is_overlay (bl->section) | |
4136 | && !section_is_mapped (bl->section)) | |
4137 | return 0; /* unmapped overlay -- can't be a match */ | |
4138 | else | |
4139 | return 1; | |
4140 | } | |
4141 | return 0; | |
4142 | } | |
4143 | ||
a1fd2fa5 | 4144 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4145 | |
4146 | int | |
accd0bcd | 4147 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4148 | { |
e0d9a270 | 4149 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
c5aa993b | 4150 | { |
35df4500 TJB |
4151 | if (bl->loc_type != bp_loc_software_breakpoint |
4152 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4153 | continue; |
4154 | ||
f7ce857f PA |
4155 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4156 | return 1; | |
c5aa993b | 4157 | } |
c36b740a VP |
4158 | return 0; |
4159 | } | |
4160 | ||
a1fd2fa5 PA |
4161 | /* This function returns non-zero iff there is a software breakpoint |
4162 | inserted at PC. */ | |
c36b740a VP |
4163 | |
4164 | int | |
accd0bcd | 4165 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4166 | CORE_ADDR pc) |
4fa8626c | 4167 | { |
e0d9a270 | 4168 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
4fa8626c | 4169 | { |
35df4500 | 4170 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4171 | continue; |
4172 | ||
f7ce857f PA |
4173 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4174 | return 1; | |
4fa8626c DJ |
4175 | } |
4176 | ||
4177 | return 0; | |
9c02b525 PA |
4178 | } |
4179 | ||
4180 | /* See breakpoint.h. */ | |
4181 | ||
4182 | int | |
accd0bcd | 4183 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4184 | CORE_ADDR pc) |
4185 | { | |
e0d9a270 | 4186 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
9c02b525 | 4187 | { |
9c02b525 PA |
4188 | if (bl->loc_type != bp_loc_hardware_breakpoint) |
4189 | continue; | |
4190 | ||
4191 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4192 | return 1; | |
4193 | } | |
4194 | ||
4195 | return 0; | |
4fa8626c DJ |
4196 | } |
4197 | ||
9093389c | 4198 | int |
accd0bcd | 4199 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4200 | CORE_ADDR addr, ULONGEST len) |
4201 | { | |
43892fdf | 4202 | for (breakpoint *bpt : all_breakpoints ()) |
9093389c | 4203 | { |
9093389c PA |
4204 | if (bpt->type != bp_hardware_watchpoint |
4205 | && bpt->type != bp_access_watchpoint) | |
4206 | continue; | |
4207 | ||
4208 | if (!breakpoint_enabled (bpt)) | |
4209 | continue; | |
4210 | ||
40cb8ca5 | 4211 | for (bp_location *loc : bpt->locations ()) |
9093389c PA |
4212 | if (loc->pspace->aspace == aspace && loc->inserted) |
4213 | { | |
4214 | CORE_ADDR l, h; | |
4215 | ||
4216 | /* Check for intersection. */ | |
768adc05 PA |
4217 | l = std::max<CORE_ADDR> (loc->address, addr); |
4218 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4219 | if (l < h) |
4220 | return 1; | |
4221 | } | |
4222 | } | |
4223 | return 0; | |
4224 | } | |
c5aa993b | 4225 | |
f2478a7e | 4226 | /* See breakpoint.h. */ |
c906108c | 4227 | |
f2478a7e SM |
4228 | bool |
4229 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4230 | { |
f2478a7e | 4231 | return (b->type == bp_catchpoint); |
c906108c SS |
4232 | } |
4233 | ||
c906108c SS |
4234 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4235 | Also free any storage that is part of a bpstat. */ | |
4236 | ||
4237 | void | |
313f3b21 | 4238 | bpstat_clear (bpstat **bsp) |
c906108c | 4239 | { |
313f3b21 SM |
4240 | bpstat *p; |
4241 | bpstat *q; | |
c906108c SS |
4242 | |
4243 | if (bsp == 0) | |
4244 | return; | |
4245 | p = *bsp; | |
4246 | while (p != NULL) | |
4247 | { | |
4248 | q = p->next; | |
04afa70c | 4249 | delete p; |
c906108c SS |
4250 | p = q; |
4251 | } | |
4252 | *bsp = NULL; | |
4253 | } | |
4254 | ||
313f3b21 | 4255 | bpstat::bpstat (const bpstat &other) |
04afa70c TT |
4256 | : next (NULL), |
4257 | bp_location_at (other.bp_location_at), | |
4258 | breakpoint_at (other.breakpoint_at), | |
4259 | commands (other.commands), | |
04afa70c TT |
4260 | print (other.print), |
4261 | stop (other.stop), | |
4262 | print_it (other.print_it) | |
4263 | { | |
850645cf TT |
4264 | if (other.old_val != NULL) |
4265 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c TT |
4266 | } |
4267 | ||
c906108c SS |
4268 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4269 | is part of the bpstat is copied as well. */ | |
4270 | ||
313f3b21 SM |
4271 | bpstat * |
4272 | bpstat_copy (bpstat *bs) | |
c906108c | 4273 | { |
313f3b21 SM |
4274 | bpstat *p = nullptr; |
4275 | bpstat *tmp; | |
4276 | bpstat *retval = nullptr; | |
c906108c SS |
4277 | |
4278 | if (bs == NULL) | |
4279 | return bs; | |
4280 | ||
4281 | for (; bs != NULL; bs = bs->next) | |
4282 | { | |
313f3b21 | 4283 | tmp = new bpstat (*bs); |
31cc81e9 | 4284 | |
c906108c SS |
4285 | if (p == NULL) |
4286 | /* This is the first thing in the chain. */ | |
4287 | retval = tmp; | |
4288 | else | |
4289 | p->next = tmp; | |
4290 | p = tmp; | |
4291 | } | |
4292 | p->next = NULL; | |
4293 | return retval; | |
4294 | } | |
4295 | ||
4a64f543 | 4296 | /* Find the bpstat associated with this breakpoint. */ |
c906108c | 4297 | |
313f3b21 SM |
4298 | bpstat * |
4299 | bpstat_find_breakpoint (bpstat *bsp, struct breakpoint *breakpoint) | |
c906108c | 4300 | { |
c5aa993b JM |
4301 | if (bsp == NULL) |
4302 | return NULL; | |
c906108c | 4303 | |
c5aa993b JM |
4304 | for (; bsp != NULL; bsp = bsp->next) |
4305 | { | |
f431efe5 | 4306 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4307 | return bsp; |
4308 | } | |
c906108c SS |
4309 | return NULL; |
4310 | } | |
4311 | ||
ab04a2af TT |
4312 | /* See breakpoint.h. */ |
4313 | ||
4c462cb0 | 4314 | bool |
313f3b21 | 4315 | bpstat_explains_signal (bpstat *bsp, enum gdb_signal sig) |
ab04a2af | 4316 | { |
ab04a2af TT |
4317 | for (; bsp != NULL; bsp = bsp->next) |
4318 | { | |
427cd150 TT |
4319 | if (bsp->breakpoint_at == NULL) |
4320 | { | |
4321 | /* A moribund location can never explain a signal other than | |
4322 | GDB_SIGNAL_TRAP. */ | |
4323 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4324 | return true; |
427cd150 TT |
4325 | } |
4326 | else | |
47591c29 PA |
4327 | { |
4328 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4329 | sig)) | |
4c462cb0 | 4330 | return true; |
47591c29 | 4331 | } |
ab04a2af TT |
4332 | } |
4333 | ||
4c462cb0 | 4334 | return false; |
ab04a2af TT |
4335 | } |
4336 | ||
4a64f543 MS |
4337 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4338 | stopped at. *BSP upon return is a bpstat which points to the | |
4339 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4340 | good for anything but further calls to bpstat_num). | |
4341 | ||
8671a17b PA |
4342 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4343 | Return -1 if stopped at a breakpoint that has been deleted since | |
4344 | we set it. | |
4345 | Return 1 otherwise. */ | |
c906108c SS |
4346 | |
4347 | int | |
313f3b21 | 4348 | bpstat_num (bpstat **bsp, int *num) |
c906108c SS |
4349 | { |
4350 | struct breakpoint *b; | |
4351 | ||
4352 | if ((*bsp) == NULL) | |
4353 | return 0; /* No more breakpoint values */ | |
8671a17b | 4354 | |
4a64f543 MS |
4355 | /* We assume we'll never have several bpstats that correspond to a |
4356 | single breakpoint -- otherwise, this function might return the | |
4357 | same number more than once and this will look ugly. */ | |
f431efe5 | 4358 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4359 | *bsp = (*bsp)->next; |
4360 | if (b == NULL) | |
4361 | return -1; /* breakpoint that's been deleted since */ | |
4362 | ||
4363 | *num = b->number; /* We have its number */ | |
4364 | return 1; | |
c906108c SS |
4365 | } |
4366 | ||
e93ca019 | 4367 | /* See breakpoint.h. */ |
c906108c SS |
4368 | |
4369 | void | |
e93ca019 | 4370 | bpstat_clear_actions (void) |
c906108c | 4371 | { |
313f3b21 | 4372 | bpstat *bs; |
e93ca019 | 4373 | |
00431a78 | 4374 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4375 | return; |
4376 | ||
00431a78 | 4377 | thread_info *tp = inferior_thread (); |
e93ca019 | 4378 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4379 | { |
d1b0a7bf | 4380 | bs->commands = NULL; |
850645cf | 4381 | bs->old_val.reset (nullptr); |
c906108c SS |
4382 | } |
4383 | } | |
4384 | ||
f3b1572e PA |
4385 | /* Called when a command is about to proceed the inferior. */ |
4386 | ||
4387 | static void | |
4388 | breakpoint_about_to_proceed (void) | |
4389 | { | |
d7e15655 | 4390 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4391 | { |
4392 | struct thread_info *tp = inferior_thread (); | |
4393 | ||
4394 | /* Allow inferior function calls in breakpoint commands to not | |
4395 | interrupt the command list. When the call finishes | |
4396 | successfully, the inferior will be standing at the same | |
4397 | breakpoint as if nothing happened. */ | |
16c381f0 | 4398 | if (tp->control.in_infcall) |
f3b1572e PA |
4399 | return; |
4400 | } | |
4401 | ||
4402 | breakpoint_proceeded = 1; | |
4403 | } | |
4404 | ||
abf85f46 JK |
4405 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4406 | or its equivalent. */ | |
4407 | ||
4408 | static int | |
4409 | command_line_is_silent (struct command_line *cmd) | |
4410 | { | |
4f45d445 | 4411 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4412 | } |
4413 | ||
4a64f543 MS |
4414 | /* Execute all the commands associated with all the breakpoints at |
4415 | this location. Any of these commands could cause the process to | |
4416 | proceed beyond this point, etc. We look out for such changes by | |
4417 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4418 | |
347bddb7 PA |
4419 | Returns true if a breakpoint command resumed the inferior. In that |
4420 | case, it is the caller's responsibility to recall it again with the | |
4421 | bpstat of the current thread. */ | |
4422 | ||
4423 | static int | |
313f3b21 | 4424 | bpstat_do_actions_1 (bpstat **bsp) |
c906108c | 4425 | { |
313f3b21 | 4426 | bpstat *bs; |
347bddb7 | 4427 | int again = 0; |
c906108c SS |
4428 | |
4429 | /* Avoid endless recursion if a `source' command is contained | |
4430 | in bs->commands. */ | |
4431 | if (executing_breakpoint_commands) | |
347bddb7 | 4432 | return 0; |
c906108c | 4433 | |
81b1e71c TT |
4434 | scoped_restore save_executing |
4435 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4436 | |
1ac32117 | 4437 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4438 | |
4a64f543 | 4439 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4440 | bs = *bsp; |
4441 | ||
4442 | breakpoint_proceeded = 0; | |
4443 | for (; bs != NULL; bs = bs->next) | |
4444 | { | |
d1b0a7bf | 4445 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4446 | |
4447 | /* Take ownership of the BSP's command tree, if it has one. | |
4448 | ||
dda83cd7 SM |
4449 | The command tree could legitimately contain commands like |
4450 | 'step' and 'next', which call clear_proceed_status, which | |
4451 | frees stop_bpstat's command tree. To make sure this doesn't | |
4452 | free the tree we're executing out from under us, we need to | |
4453 | take ownership of the tree ourselves. Since a given bpstat's | |
4454 | commands are only executed once, we don't need to copy it; we | |
4455 | can clear the pointer in the bpstat, and make sure we free | |
4456 | the tree when we're done. */ | |
d1b0a7bf | 4457 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4458 | bs->commands = NULL; |
d1b0a7bf TT |
4459 | if (ccmd != NULL) |
4460 | cmd = ccmd.get (); | |
abf85f46 JK |
4461 | if (command_line_is_silent (cmd)) |
4462 | { | |
4463 | /* The action has been already done by bpstat_stop_status. */ | |
4464 | cmd = cmd->next; | |
4465 | } | |
6c50ab1c | 4466 | |
c906108c SS |
4467 | while (cmd != NULL) |
4468 | { | |
4469 | execute_control_command (cmd); | |
4470 | ||
4471 | if (breakpoint_proceeded) | |
4472 | break; | |
4473 | else | |
4474 | cmd = cmd->next; | |
4475 | } | |
6c50ab1c | 4476 | |
c906108c | 4477 | if (breakpoint_proceeded) |
32c1e744 | 4478 | { |
cb814510 | 4479 | if (current_ui->async) |
347bddb7 PA |
4480 | /* If we are in async mode, then the target might be still |
4481 | running, not stopped at any breakpoint, so nothing for | |
4482 | us to do here -- just return to the event loop. */ | |
4483 | ; | |
32c1e744 VP |
4484 | else |
4485 | /* In sync mode, when execute_control_command returns | |
4486 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4487 | Breakpoint commands for that stop were not run, since |
4488 | execute_command does not run breakpoint commands -- | |
4489 | only command_line_handler does, but that one is not | |
4490 | involved in execution of breakpoint commands. So, we | |
4491 | can now execute breakpoint commands. It should be | |
4492 | noted that making execute_command do bpstat actions is | |
4493 | not an option -- in this case we'll have recursive | |
4494 | invocation of bpstat for each breakpoint with a | |
4495 | command, and can easily blow up GDB stack. Instead, we | |
4496 | return true, which will trigger the caller to recall us | |
4497 | with the new stop_bpstat. */ | |
4498 | again = 1; | |
4499 | break; | |
32c1e744 | 4500 | } |
c906108c | 4501 | } |
347bddb7 PA |
4502 | return again; |
4503 | } | |
4504 | ||
00431a78 PA |
4505 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4506 | one, is alive and has execution. Return NULL otherwise. */ | |
4507 | ||
4508 | static thread_info * | |
4509 | get_bpstat_thread () | |
4510 | { | |
55f6301a | 4511 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4512 | return NULL; |
4513 | ||
4514 | thread_info *tp = inferior_thread (); | |
611841bb | 4515 | if (tp->state == THREAD_EXITED || tp->executing ()) |
00431a78 PA |
4516 | return NULL; |
4517 | return tp; | |
4518 | } | |
4519 | ||
347bddb7 PA |
4520 | void |
4521 | bpstat_do_actions (void) | |
4522 | { | |
694c6bf5 | 4523 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4524 | thread_info *tp; |
353d1d73 | 4525 | |
347bddb7 | 4526 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4527 | while ((tp = get_bpstat_thread ()) != NULL) |
4528 | { | |
4529 | /* Since in sync mode, bpstat_do_actions may resume the | |
4530 | inferior, and only return when it is stopped at the next | |
4531 | breakpoint, we keep doing breakpoint actions until it returns | |
4532 | false to indicate the inferior was not resumed. */ | |
4533 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4534 | break; | |
4535 | } | |
353d1d73 | 4536 | |
694c6bf5 | 4537 | cleanup_if_error.release (); |
c906108c SS |
4538 | } |
4539 | ||
fa4727a6 DJ |
4540 | /* Print out the (old or new) value associated with a watchpoint. */ |
4541 | ||
4542 | static void | |
4543 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4544 | { | |
4545 | if (val == NULL) | |
7f6aba03 | 4546 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4547 | else |
79a45b7d TT |
4548 | { |
4549 | struct value_print_options opts; | |
4550 | get_user_print_options (&opts); | |
4551 | value_print (val, stream, &opts); | |
4552 | } | |
fa4727a6 DJ |
4553 | } |
4554 | ||
f303dbd6 PA |
4555 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4556 | debugging multiple threads. */ | |
4557 | ||
4558 | void | |
4559 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4560 | { | |
112e8700 | 4561 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4562 | return; |
4563 | ||
112e8700 | 4564 | uiout->text ("\n"); |
f303dbd6 PA |
4565 | |
4566 | if (show_thread_that_caused_stop ()) | |
4567 | { | |
f303dbd6 PA |
4568 | struct thread_info *thr = inferior_thread (); |
4569 | ||
112e8700 | 4570 | uiout->text ("Thread "); |
33eca680 | 4571 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 | 4572 | |
25558938 | 4573 | const char *name = thread_name (thr); |
f303dbd6 PA |
4574 | if (name != NULL) |
4575 | { | |
112e8700 | 4576 | uiout->text (" \""); |
33eca680 | 4577 | uiout->field_string ("name", name); |
112e8700 | 4578 | uiout->text ("\""); |
f303dbd6 PA |
4579 | } |
4580 | ||
112e8700 | 4581 | uiout->text (" hit "); |
f303dbd6 PA |
4582 | } |
4583 | } | |
4584 | ||
e514a9d6 | 4585 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4586 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4587 | 'print_it' in the bpstat structure. Under some circumstances we |
4588 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4589 | normal_stop(). */ |
e514a9d6 JM |
4590 | |
4591 | static enum print_stop_action | |
313f3b21 | 4592 | print_bp_stop_message (bpstat *bs) |
e514a9d6 JM |
4593 | { |
4594 | switch (bs->print_it) | |
4595 | { | |
4596 | case print_it_noop: | |
4a64f543 | 4597 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4598 | return PRINT_UNKNOWN; |
4599 | break; | |
4600 | ||
4601 | case print_it_done: | |
4602 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4603 | relevant messages. */ |
e514a9d6 JM |
4604 | return PRINT_SRC_AND_LOC; |
4605 | break; | |
4606 | ||
4607 | case print_it_normal: | |
4f8d1dc6 | 4608 | { |
f431efe5 PA |
4609 | struct breakpoint *b = bs->breakpoint_at; |
4610 | ||
1a6a67de TJB |
4611 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4612 | which has since been deleted. */ | |
4613 | if (b == NULL) | |
4614 | return PRINT_UNKNOWN; | |
4615 | ||
348d480f PA |
4616 | /* Normal case. Call the breakpoint's print_it method. */ |
4617 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4618 | } |
348d480f | 4619 | break; |
3086aeae | 4620 | |
e514a9d6 | 4621 | default: |
8e65ff28 | 4622 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4623 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4624 | break; |
c906108c | 4625 | } |
c906108c SS |
4626 | } |
4627 | ||
2f9ee862 | 4628 | /* See breakpoint.h. */ |
edcc5120 | 4629 | |
2f9ee862 | 4630 | void |
4e9e993a | 4631 | print_solib_event (bool is_catchpoint) |
edcc5120 | 4632 | { |
6fb16ce6 | 4633 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4634 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4635 | |
4636 | if (!is_catchpoint) | |
4637 | { | |
4638 | if (any_added || any_deleted) | |
112e8700 | 4639 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4640 | else |
112e8700 SM |
4641 | current_uiout->text (_("Stopped due to shared library event (no " |
4642 | "libraries added or removed)\n")); | |
edcc5120 TT |
4643 | } |
4644 | ||
112e8700 SM |
4645 | if (current_uiout->is_mi_like_p ()) |
4646 | current_uiout->field_string ("reason", | |
4647 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4648 | |
4649 | if (any_deleted) | |
4650 | { | |
112e8700 | 4651 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4652 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4653 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4654 | { |
6fb16ce6 SM |
4655 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4656 | ||
edcc5120 | 4657 | if (ix > 0) |
112e8700 SM |
4658 | current_uiout->text (" "); |
4659 | current_uiout->field_string ("library", name); | |
4660 | current_uiout->text ("\n"); | |
edcc5120 | 4661 | } |
edcc5120 TT |
4662 | } |
4663 | ||
4664 | if (any_added) | |
4665 | { | |
112e8700 | 4666 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4667 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4668 | bool first = true; |
52941706 | 4669 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4670 | { |
bcb430e4 | 4671 | if (!first) |
112e8700 | 4672 | current_uiout->text (" "); |
bcb430e4 | 4673 | first = false; |
112e8700 SM |
4674 | current_uiout->field_string ("library", iter->so_name); |
4675 | current_uiout->text ("\n"); | |
edcc5120 | 4676 | } |
edcc5120 TT |
4677 | } |
4678 | } | |
4679 | ||
e514a9d6 JM |
4680 | /* Print a message indicating what happened. This is called from |
4681 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4682 | list - a list of the eventpoints that caused this stop. KIND is |
4683 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4684 | routine calls the generic print routine for printing a message |
4685 | about reasons for stopping. This will print (for example) the | |
4686 | "Breakpoint n," part of the output. The return value of this | |
4687 | routine is one of: | |
c906108c | 4688 | |
4a64f543 | 4689 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4690 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4691 | code to print the location. An example is |
c5aa993b JM |
4692 | "Breakpoint 1, " which should be followed by |
4693 | the location. | |
917317f4 | 4694 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4695 | to also print the location part of the message. |
4696 | An example is the catch/throw messages, which | |
4a64f543 | 4697 | don't require a location appended to the end. |
917317f4 | 4698 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4699 | further info to be printed. */ |
c906108c | 4700 | |
917317f4 | 4701 | enum print_stop_action |
313f3b21 | 4702 | bpstat_print (bpstat *bs, int kind) |
c906108c | 4703 | { |
f486487f | 4704 | enum print_stop_action val; |
c5aa993b | 4705 | |
c906108c | 4706 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4707 | (Currently all watchpoints go on the bpstat whether hit or not. |
4708 | That probably could (should) be changed, provided care is taken | |
c906108c | 4709 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4710 | for (; bs; bs = bs->next) |
4711 | { | |
4712 | val = print_bp_stop_message (bs); | |
4713 | if (val == PRINT_SRC_ONLY | |
4714 | || val == PRINT_SRC_AND_LOC | |
4715 | || val == PRINT_NOTHING) | |
4716 | return val; | |
4717 | } | |
c906108c | 4718 | |
36dfb11c TT |
4719 | /* If we had hit a shared library event breakpoint, |
4720 | print_bp_stop_message would print out this message. If we hit an | |
4721 | OS-level shared library event, do the same thing. */ | |
4722 | if (kind == TARGET_WAITKIND_LOADED) | |
4723 | { | |
4e9e993a | 4724 | print_solib_event (false); |
36dfb11c TT |
4725 | return PRINT_NOTHING; |
4726 | } | |
4727 | ||
e514a9d6 | 4728 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4729 | with and nothing was printed. */ |
917317f4 | 4730 | return PRINT_UNKNOWN; |
c906108c SS |
4731 | } |
4732 | ||
bf469271 | 4733 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4734 | |
bf469271 PA |
4735 | static bool |
4736 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4737 | { |
278cd55f | 4738 | struct value *mark = value_mark (); |
bf469271 | 4739 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4740 | |
c906108c | 4741 | value_free_to_mark (mark); |
bf469271 | 4742 | return res; |
c906108c SS |
4743 | } |
4744 | ||
5760d0ab | 4745 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4746 | |
313f3b21 | 4747 | bpstat::bpstat (struct bp_location *bl, bpstat ***bs_link_pointer) |
04afa70c | 4748 | : next (NULL), |
b6433ede | 4749 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4750 | breakpoint_at (bl->owner), |
4751 | commands (NULL), | |
04afa70c TT |
4752 | print (0), |
4753 | stop (0), | |
4754 | print_it (print_it_normal) | |
c906108c | 4755 | { |
04afa70c TT |
4756 | **bs_link_pointer = this; |
4757 | *bs_link_pointer = &next; | |
4758 | } | |
4759 | ||
313f3b21 | 4760 | bpstat::bpstat () |
04afa70c | 4761 | : next (NULL), |
04afa70c TT |
4762 | breakpoint_at (NULL), |
4763 | commands (NULL), | |
04afa70c TT |
4764 | print (0), |
4765 | stop (0), | |
4766 | print_it (print_it_normal) | |
4767 | { | |
c906108c SS |
4768 | } |
4769 | \f | |
d983da9c DJ |
4770 | /* The target has stopped with waitstatus WS. Check if any hardware |
4771 | watchpoints have triggered, according to the target. */ | |
4772 | ||
4773 | int | |
c272a98c | 4774 | watchpoints_triggered (const target_waitstatus &ws) |
d983da9c | 4775 | { |
57810aa7 | 4776 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c | 4777 | CORE_ADDR addr; |
d983da9c DJ |
4778 | |
4779 | if (!stopped_by_watchpoint) | |
4780 | { | |
4781 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4782 | as not triggered. */ | |
43892fdf | 4783 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4784 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4785 | { |
4786 | struct watchpoint *w = (struct watchpoint *) b; | |
4787 | ||
4788 | w->watchpoint_triggered = watch_triggered_no; | |
4789 | } | |
d983da9c DJ |
4790 | |
4791 | return 0; | |
4792 | } | |
4793 | ||
328d42d8 | 4794 | if (!target_stopped_data_address (current_inferior ()->top_target (), &addr)) |
d983da9c DJ |
4795 | { |
4796 | /* We were stopped by a watchpoint, but we don't know where. | |
4797 | Mark all watchpoints as unknown. */ | |
43892fdf | 4798 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4799 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4800 | { |
4801 | struct watchpoint *w = (struct watchpoint *) b; | |
4802 | ||
4803 | w->watchpoint_triggered = watch_triggered_unknown; | |
4804 | } | |
d983da9c | 4805 | |
3c4797ba | 4806 | return 1; |
d983da9c DJ |
4807 | } |
4808 | ||
4809 | /* The target could report the data address. Mark watchpoints | |
4810 | affected by this data address as triggered, and all others as not | |
4811 | triggered. */ | |
4812 | ||
43892fdf | 4813 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4814 | if (is_hardware_watchpoint (b)) |
d983da9c | 4815 | { |
3a5c3e22 | 4816 | struct watchpoint *w = (struct watchpoint *) b; |
d983da9c | 4817 | |
3a5c3e22 | 4818 | w->watchpoint_triggered = watch_triggered_no; |
40cb8ca5 | 4819 | for (bp_location *loc : b->locations ()) |
9c06b0b4 | 4820 | { |
3a5c3e22 | 4821 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4822 | { |
3a5c3e22 PA |
4823 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4824 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4825 | |
4826 | if (newaddr == start) | |
4827 | { | |
3a5c3e22 | 4828 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4829 | break; |
4830 | } | |
4831 | } | |
4832 | /* Exact match not required. Within range is sufficient. */ | |
328d42d8 SM |
4833 | else if (target_watchpoint_addr_within_range |
4834 | (current_inferior ()->top_target (), addr, loc->address, | |
4835 | loc->length)) | |
9c06b0b4 | 4836 | { |
3a5c3e22 | 4837 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4838 | break; |
4839 | } | |
4840 | } | |
d983da9c DJ |
4841 | } |
4842 | ||
4843 | return 1; | |
4844 | } | |
4845 | ||
bf469271 PA |
4846 | /* Possible return values for watchpoint_check. */ |
4847 | enum wp_check_result | |
4848 | { | |
4849 | /* The watchpoint has been deleted. */ | |
4850 | WP_DELETED = 1, | |
4851 | ||
4852 | /* The value has changed. */ | |
4853 | WP_VALUE_CHANGED = 2, | |
4854 | ||
4855 | /* The value has not changed. */ | |
4856 | WP_VALUE_NOT_CHANGED = 3, | |
4857 | ||
4858 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4859 | WP_IGNORE = 4, | |
4860 | }; | |
c906108c SS |
4861 | |
4862 | #define BP_TEMPFLAG 1 | |
4863 | #define BP_HARDWAREFLAG 2 | |
4864 | ||
4a64f543 | 4865 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4866 | changed. */ |
553e4c11 | 4867 | |
bf469271 | 4868 | static wp_check_result |
313f3b21 | 4869 | watchpoint_check (bpstat *bs) |
c906108c | 4870 | { |
3a5c3e22 | 4871 | struct watchpoint *b; |
c906108c SS |
4872 | struct frame_info *fr; |
4873 | int within_current_scope; | |
4874 | ||
f431efe5 | 4875 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4876 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4877 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4878 | |
f6bc2008 PA |
4879 | /* If this is a local watchpoint, we only want to check if the |
4880 | watchpoint frame is in scope if the current thread is the thread | |
4881 | that was used to create the watchpoint. */ | |
4882 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4883 | return WP_IGNORE; |
f6bc2008 | 4884 | |
c906108c SS |
4885 | if (b->exp_valid_block == NULL) |
4886 | within_current_scope = 1; | |
4887 | else | |
4888 | { | |
edb3359d DJ |
4889 | struct frame_info *frame = get_current_frame (); |
4890 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4891 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4892 | ||
c9cf6e20 | 4893 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4894 | still in the function but the stack frame has already been |
4895 | invalidated. Since we can't rely on the values of local | |
4896 | variables after the stack has been destroyed, we are treating | |
4897 | the watchpoint in that state as `not changed' without further | |
4898 | checking. Don't mark watchpoints as changed if the current | |
4899 | frame is in an epilogue - even if they are in some other | |
4900 | frame, our view of the stack is likely to be wrong and | |
4901 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4902 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4903 | return WP_IGNORE; |
a0f49112 | 4904 | |
101dcfbe | 4905 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4906 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4907 | |
4908 | /* If we've gotten confused in the unwinder, we might have | |
4909 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4910 | if (within_current_scope) |
4911 | { | |
4912 | struct symbol *function; | |
4913 | ||
4914 | function = get_frame_function (fr); | |
4915 | if (function == NULL | |
4aeddc50 | 4916 | || !contained_in (b->exp_valid_block, function->value_block ())) |
edb3359d DJ |
4917 | within_current_scope = 0; |
4918 | } | |
69fbadd5 | 4919 | |
edb3359d | 4920 | if (within_current_scope) |
c906108c SS |
4921 | /* If we end up stopping, the current frame will get selected |
4922 | in normal_stop. So this call to select_frame won't affect | |
4923 | the user. */ | |
0f7d239c | 4924 | select_frame (fr); |
c906108c | 4925 | } |
c5aa993b | 4926 | |
c906108c SS |
4927 | if (within_current_scope) |
4928 | { | |
4a64f543 | 4929 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
4930 | time before we return to the command level and call |
4931 | free_all_values. We can't call free_all_values because we | |
4932 | might be in the middle of evaluating a function call. */ | |
c906108c | 4933 | |
9c06b0b4 | 4934 | struct value *mark; |
fa4727a6 DJ |
4935 | struct value *new_val; |
4936 | ||
c1fc2657 | 4937 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4938 | /* Since we don't know the exact trigger address (from |
4939 | stopped_data_address), just tell the user we've triggered | |
4940 | a mask watchpoint. */ | |
4941 | return WP_VALUE_CHANGED; | |
4942 | ||
4943 | mark = value_mark (); | |
1eaebe02 | 4944 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &new_val, |
413403fc | 4945 | NULL, NULL, false); |
218d2fc6 | 4946 | |
bb9d5f81 PP |
4947 | if (b->val_bitsize != 0) |
4948 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4949 | ||
4a64f543 MS |
4950 | /* We use value_equal_contents instead of value_equal because |
4951 | the latter coerces an array to a pointer, thus comparing just | |
4952 | the address of the array instead of its contents. This is | |
4953 | not what we want. */ | |
fa4727a6 | 4954 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4955 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4956 | new_val))) | |
c906108c | 4957 | { |
c906108c | 4958 | bs->old_val = b->val; |
850645cf | 4959 | b->val = release_value (new_val); |
4c1d86d9 | 4960 | b->val_valid = true; |
850645cf TT |
4961 | if (new_val != NULL) |
4962 | value_free_to_mark (mark); | |
c906108c SS |
4963 | return WP_VALUE_CHANGED; |
4964 | } | |
4965 | else | |
4966 | { | |
60e1c644 | 4967 | /* Nothing changed. */ |
c906108c | 4968 | value_free_to_mark (mark); |
c906108c SS |
4969 | return WP_VALUE_NOT_CHANGED; |
4970 | } | |
4971 | } | |
4972 | else | |
4973 | { | |
4974 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
4975 | if we temporarily ignored the watchpoint, then when |
4976 | we reenter the block in which it is valid it contains | |
4977 | garbage (in the case of a function, it may have two | |
4978 | garbage values, one before and one after the prologue). | |
4979 | So we can't even detect the first assignment to it and | |
4980 | watch after that (since the garbage may or may not equal | |
4981 | the first value assigned). */ | |
348d480f PA |
4982 | /* We print all the stop information in |
4983 | breakpoint_ops->print_it, but in this case, by the time we | |
4984 | call breakpoint_ops->print_it this bp will be deleted | |
4985 | already. So we have no choice but print the information | |
4986 | here. */ | |
468afe6c | 4987 | |
0e454242 | 4988 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 4989 | { |
468afe6c PA |
4990 | struct ui_out *uiout = current_uiout; |
4991 | ||
112e8700 SM |
4992 | if (uiout->is_mi_like_p ()) |
4993 | uiout->field_string | |
4994 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
4995 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
4996 | "left the block in\n" | |
4997 | "which its expression is valid.\n", | |
4998 | signed_field ("wpnum", b->number)); | |
468afe6c | 4999 | } |
4ce44c66 | 5000 | |
cdac0397 | 5001 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5002 | b->commands = NULL; |
d0fb5eae | 5003 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5004 | |
5005 | return WP_DELETED; | |
5006 | } | |
5007 | } | |
5008 | ||
18a18393 | 5009 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5010 | breakpoint location BL. This function does not check if we should |
5011 | stop, only if BL explains the stop. */ | |
5012 | ||
18a18393 | 5013 | static int |
6c95b8df | 5014 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5015 | const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5016 | const target_waitstatus &ws) |
18a18393 VP |
5017 | { |
5018 | struct breakpoint *b = bl->owner; | |
5019 | ||
348d480f | 5020 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5021 | gdb_assert (b != NULL); |
5022 | ||
bd522513 | 5023 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5024 | } |
5025 | ||
3a5c3e22 PA |
5026 | /* Determine if the watched values have actually changed, and we |
5027 | should stop. If not, set BS->stop to 0. */ | |
5028 | ||
18a18393 | 5029 | static void |
313f3b21 | 5030 | bpstat_check_watchpoint (bpstat *bs) |
18a18393 | 5031 | { |
2bdf28a0 | 5032 | const struct bp_location *bl; |
3a5c3e22 | 5033 | struct watchpoint *b; |
2bdf28a0 JK |
5034 | |
5035 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5036 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5037 | gdb_assert (bl != NULL); |
3a5c3e22 | 5038 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5039 | gdb_assert (b != NULL); |
18a18393 | 5040 | |
18a18393 | 5041 | { |
18a18393 VP |
5042 | int must_check_value = 0; |
5043 | ||
c1fc2657 | 5044 | if (b->type == bp_watchpoint) |
18a18393 VP |
5045 | /* For a software watchpoint, we must always check the |
5046 | watched value. */ | |
5047 | must_check_value = 1; | |
5048 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5049 | /* We have a hardware watchpoint (read, write, or access) | |
5050 | and the target earlier reported an address watched by | |
5051 | this watchpoint. */ | |
5052 | must_check_value = 1; | |
5053 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5054 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5055 | /* We were stopped by a hardware watchpoint, but the target could |
5056 | not report the data address. We must check the watchpoint's | |
5057 | value. Access and read watchpoints are out of luck; without | |
5058 | a data address, we can't figure it out. */ | |
5059 | must_check_value = 1; | |
3a5c3e22 | 5060 | |
18a18393 VP |
5061 | if (must_check_value) |
5062 | { | |
bf469271 PA |
5063 | wp_check_result e; |
5064 | ||
a70b8144 | 5065 | try |
bf469271 PA |
5066 | { |
5067 | e = watchpoint_check (bs); | |
5068 | } | |
230d2906 | 5069 | catch (const gdb_exception &ex) |
bf469271 PA |
5070 | { |
5071 | exception_fprintf (gdb_stderr, ex, | |
5072 | "Error evaluating expression " | |
5073 | "for watchpoint %d\n", | |
5074 | b->number); | |
5075 | ||
5076 | SWITCH_THRU_ALL_UIS () | |
5077 | { | |
6cb06a8c TT |
5078 | gdb_printf (_("Watchpoint %d deleted.\n"), |
5079 | b->number); | |
bf469271 PA |
5080 | } |
5081 | watchpoint_del_at_next_stop (b); | |
5082 | e = WP_DELETED; | |
5083 | } | |
bf469271 | 5084 | |
18a18393 VP |
5085 | switch (e) |
5086 | { | |
5087 | case WP_DELETED: | |
5088 | /* We've already printed what needs to be printed. */ | |
5089 | bs->print_it = print_it_done; | |
5090 | /* Stop. */ | |
5091 | break; | |
60e1c644 PA |
5092 | case WP_IGNORE: |
5093 | bs->print_it = print_it_noop; | |
5094 | bs->stop = 0; | |
5095 | break; | |
18a18393 | 5096 | case WP_VALUE_CHANGED: |
c1fc2657 | 5097 | if (b->type == bp_read_watchpoint) |
18a18393 | 5098 | { |
85d721b8 PA |
5099 | /* There are two cases to consider here: |
5100 | ||
4a64f543 | 5101 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5102 | In that case, trust the target, and always report |
5103 | the watchpoint hit to the user. Even though | |
5104 | reads don't cause value changes, the value may | |
5105 | have changed since the last time it was read, and | |
5106 | since we're not trapping writes, we will not see | |
5107 | those, and as such we should ignore our notion of | |
5108 | old value. | |
5109 | ||
4a64f543 | 5110 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5111 | reads and writes. There are two ways this may |
5112 | happen: | |
5113 | ||
4a64f543 | 5114 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5115 | reads only, but can break on accesses (reads or |
5116 | writes), such as e.g., x86. We detect this case | |
5117 | at the time we try to insert read watchpoints. | |
5118 | ||
4a64f543 | 5119 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5120 | watchpoints, but, the user set an access or write |
5121 | watchpoint watching the same memory as this read | |
5122 | watchpoint. | |
5123 | ||
5124 | If we're watching memory writes as well as reads, | |
5125 | ignore watchpoint hits when we find that the | |
5126 | value hasn't changed, as reads don't cause | |
5127 | changes. This still gives false positives when | |
5128 | the program writes the same value to memory as | |
5129 | what there was already in memory (we will confuse | |
5130 | it for a read), but it's much better than | |
5131 | nothing. */ | |
5132 | ||
5133 | int other_write_watchpoint = 0; | |
5134 | ||
5135 | if (bl->watchpoint_type == hw_read) | |
5136 | { | |
43892fdf | 5137 | for (breakpoint *other_b : all_breakpoints ()) |
3a5c3e22 PA |
5138 | if (other_b->type == bp_hardware_watchpoint |
5139 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5140 | { |
3a5c3e22 PA |
5141 | struct watchpoint *other_w = |
5142 | (struct watchpoint *) other_b; | |
5143 | ||
5144 | if (other_w->watchpoint_triggered | |
5145 | == watch_triggered_yes) | |
5146 | { | |
5147 | other_write_watchpoint = 1; | |
5148 | break; | |
5149 | } | |
85d721b8 PA |
5150 | } |
5151 | } | |
5152 | ||
5153 | if (other_write_watchpoint | |
5154 | || bl->watchpoint_type == hw_access) | |
5155 | { | |
5156 | /* We're watching the same memory for writes, | |
5157 | and the value changed since the last time we | |
5158 | updated it, so this trap must be for a write. | |
5159 | Ignore it. */ | |
5160 | bs->print_it = print_it_noop; | |
5161 | bs->stop = 0; | |
5162 | } | |
18a18393 VP |
5163 | } |
5164 | break; | |
5165 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5166 | if (b->type == bp_hardware_watchpoint |
5167 | || b->type == bp_watchpoint) | |
18a18393 VP |
5168 | { |
5169 | /* Don't stop: write watchpoints shouldn't fire if | |
5170 | the value hasn't changed. */ | |
5171 | bs->print_it = print_it_noop; | |
5172 | bs->stop = 0; | |
5173 | } | |
5174 | /* Stop. */ | |
5175 | break; | |
5176 | default: | |
5177 | /* Can't happen. */ | |
18a18393 VP |
5178 | break; |
5179 | } | |
5180 | } | |
5181 | else /* must_check_value == 0 */ | |
5182 | { | |
5183 | /* This is a case where some watchpoint(s) triggered, but | |
5184 | not at the address of this watchpoint, or else no | |
5185 | watchpoint triggered after all. So don't print | |
5186 | anything for this watchpoint. */ | |
5187 | bs->print_it = print_it_noop; | |
5188 | bs->stop = 0; | |
5189 | } | |
5190 | } | |
5191 | } | |
5192 | ||
7d4df6a4 DE |
5193 | /* For breakpoints that are currently marked as telling gdb to stop, |
5194 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5195 | of breakpoint referred to by BS. If we should not stop for this |
5196 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5197 | |
18a18393 | 5198 | static void |
313f3b21 | 5199 | bpstat_check_breakpoint_conditions (bpstat *bs, thread_info *thread) |
18a18393 | 5200 | { |
2bdf28a0 JK |
5201 | const struct bp_location *bl; |
5202 | struct breakpoint *b; | |
bf469271 PA |
5203 | /* Assume stop. */ |
5204 | bool condition_result = true; | |
7d4df6a4 DE |
5205 | struct expression *cond; |
5206 | ||
5207 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5208 | |
5209 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5210 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5211 | gdb_assert (bl != NULL); |
f431efe5 | 5212 | b = bs->breakpoint_at; |
2bdf28a0 | 5213 | gdb_assert (b != NULL); |
18a18393 | 5214 | |
b775012e LM |
5215 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5216 | need to do so again since GDB does not know if we stopped due to a | |
5217 | breakpoint or a single step breakpoint. */ | |
5218 | ||
18a18393 | 5219 | if (frame_id_p (b->frame_id) |
edb3359d | 5220 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5221 | { |
7d4df6a4 DE |
5222 | bs->stop = 0; |
5223 | return; | |
5224 | } | |
60e1c644 | 5225 | |
12ab52e9 PA |
5226 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5227 | evaluating the condition if this isn't the specified | |
5228 | thread/task. */ | |
00431a78 PA |
5229 | if ((b->thread != -1 && b->thread != thread->global_num) |
5230 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5231 | { |
5232 | bs->stop = 0; | |
5233 | return; | |
5234 | } | |
5235 | ||
6dddc817 DE |
5236 | /* Evaluate extension language breakpoints that have a "stop" method |
5237 | implemented. */ | |
5238 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5239 | |
7d4df6a4 DE |
5240 | if (is_watchpoint (b)) |
5241 | { | |
5242 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5243 | |
4d01a485 | 5244 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5245 | } |
5246 | else | |
4d01a485 | 5247 | cond = bl->cond.get (); |
60e1c644 | 5248 | |
7d4df6a4 DE |
5249 | if (cond && b->disposition != disp_del_at_next_stop) |
5250 | { | |
5251 | int within_current_scope = 1; | |
5252 | struct watchpoint * w; | |
60e1c644 | 5253 | |
7d4df6a4 DE |
5254 | /* We use value_mark and value_free_to_mark because it could |
5255 | be a long time before we return to the command level and | |
5256 | call free_all_values. We can't call free_all_values | |
5257 | because we might be in the middle of evaluating a | |
5258 | function call. */ | |
5259 | struct value *mark = value_mark (); | |
5260 | ||
5261 | if (is_watchpoint (b)) | |
5262 | w = (struct watchpoint *) b; | |
5263 | else | |
5264 | w = NULL; | |
5265 | ||
5266 | /* Need to select the frame, with all that implies so that | |
5267 | the conditions will have the right context. Because we | |
5268 | use the frame, we will not see an inlined function's | |
5269 | variables when we arrive at a breakpoint at the start | |
5270 | of the inlined function; the current frame will be the | |
5271 | call site. */ | |
5272 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5273 | select_frame (get_current_frame ()); | |
5274 | else | |
18a18393 | 5275 | { |
7d4df6a4 DE |
5276 | struct frame_info *frame; |
5277 | ||
5278 | /* For local watchpoint expressions, which particular | |
5279 | instance of a local is being watched matters, so we | |
5280 | keep track of the frame to evaluate the expression | |
5281 | in. To evaluate the condition however, it doesn't | |
5282 | really matter which instantiation of the function | |
5283 | where the condition makes sense triggers the | |
5284 | watchpoint. This allows an expression like "watch | |
5285 | global if q > 10" set in `func', catch writes to | |
5286 | global on all threads that call `func', or catch | |
5287 | writes on all recursive calls of `func' by a single | |
5288 | thread. We simply always evaluate the condition in | |
5289 | the innermost frame that's executing where it makes | |
5290 | sense to evaluate the condition. It seems | |
5291 | intuitive. */ | |
5292 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5293 | if (frame != NULL) | |
5294 | select_frame (frame); | |
5295 | else | |
5296 | within_current_scope = 0; | |
18a18393 | 5297 | } |
7d4df6a4 | 5298 | if (within_current_scope) |
bf469271 | 5299 | { |
a70b8144 | 5300 | try |
bf469271 PA |
5301 | { |
5302 | condition_result = breakpoint_cond_eval (cond); | |
5303 | } | |
230d2906 | 5304 | catch (const gdb_exception &ex) |
bf469271 PA |
5305 | { |
5306 | exception_fprintf (gdb_stderr, ex, | |
5307 | "Error in testing breakpoint condition:\n"); | |
5308 | } | |
bf469271 | 5309 | } |
7d4df6a4 | 5310 | else |
18a18393 | 5311 | { |
7d4df6a4 DE |
5312 | warning (_("Watchpoint condition cannot be tested " |
5313 | "in the current scope")); | |
5314 | /* If we failed to set the right context for this | |
5315 | watchpoint, unconditionally report it. */ | |
18a18393 | 5316 | } |
7d4df6a4 DE |
5317 | /* FIXME-someday, should give breakpoint #. */ |
5318 | value_free_to_mark (mark); | |
18a18393 | 5319 | } |
7d4df6a4 | 5320 | |
bf469271 | 5321 | if (cond && !condition_result) |
7d4df6a4 DE |
5322 | { |
5323 | bs->stop = 0; | |
5324 | } | |
7d4df6a4 DE |
5325 | else if (b->ignore_count > 0) |
5326 | { | |
5327 | b->ignore_count--; | |
5328 | bs->stop = 0; | |
5329 | /* Increase the hit count even though we don't stop. */ | |
5330 | ++(b->hit_count); | |
76727919 | 5331 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5332 | } |
18a18393 VP |
5333 | } |
5334 | ||
1cf4d951 PA |
5335 | /* Returns true if we need to track moribund locations of LOC's type |
5336 | on the current target. */ | |
5337 | ||
5338 | static int | |
5339 | need_moribund_for_location_type (struct bp_location *loc) | |
5340 | { | |
5341 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5342 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5343 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5344 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5345 | } | |
5346 | ||
ddfe970e | 5347 | /* See breakpoint.h. */ |
c906108c | 5348 | |
313f3b21 | 5349 | bpstat * |
ddfe970e | 5350 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 5351 | const target_waitstatus &ws) |
c906108c | 5352 | { |
313f3b21 | 5353 | bpstat *bs_head = nullptr, **bs_link = &bs_head; |
c5aa993b | 5354 | |
43892fdf | 5355 | for (breakpoint *b : all_breakpoints ()) |
429374b8 | 5356 | { |
1a853c52 | 5357 | if (!breakpoint_enabled (b)) |
429374b8 | 5358 | continue; |
a5606eee | 5359 | |
40cb8ca5 | 5360 | for (bp_location *bl : b->locations ()) |
429374b8 | 5361 | { |
4a64f543 MS |
5362 | /* For hardware watchpoints, we look only at the first |
5363 | location. The watchpoint_check function will work on the | |
5364 | entire expression, not the individual locations. For | |
5365 | read watchpoints, the watchpoints_triggered function has | |
5366 | checked all locations already. */ | |
429374b8 JK |
5367 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5368 | break; | |
18a18393 | 5369 | |
b5fa468f | 5370 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5371 | continue; |
c5aa993b | 5372 | |
09ac7c10 | 5373 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5374 | continue; |
c5aa993b | 5375 | |
4a64f543 MS |
5376 | /* Come here if it's a watchpoint, or if the break address |
5377 | matches. */ | |
c5aa993b | 5378 | |
313f3b21 | 5379 | bpstat *bs = new bpstat (bl, &bs_link); /* Alloc a bpstat to |
ddfe970e | 5380 | explain stop. */ |
c5aa993b | 5381 | |
f431efe5 PA |
5382 | /* Assume we stop. Should we find a watchpoint that is not |
5383 | actually triggered, or if the condition of the breakpoint | |
5384 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5385 | bs->stop = 1; |
5386 | bs->print = 1; | |
d983da9c | 5387 | |
f431efe5 PA |
5388 | /* If this is a scope breakpoint, mark the associated |
5389 | watchpoint as triggered so that we will handle the | |
5390 | out-of-scope event. We'll get to the watchpoint next | |
5391 | iteration. */ | |
d0fb5eae | 5392 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5393 | { |
5394 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5395 | ||
5396 | w->watchpoint_triggered = watch_triggered_yes; | |
5397 | } | |
f431efe5 PA |
5398 | } |
5399 | } | |
5400 | ||
7c16b83e | 5401 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5402 | if (!target_supports_stopped_by_sw_breakpoint () |
5403 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5404 | { |
1123588c | 5405 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5406 | { |
1cf4d951 PA |
5407 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5408 | && need_moribund_for_location_type (loc)) | |
5409 | { | |
313f3b21 | 5410 | bpstat *bs = new bpstat (loc, &bs_link); |
1cf4d951 PA |
5411 | /* For hits of moribund locations, we should just proceed. */ |
5412 | bs->stop = 0; | |
5413 | bs->print = 0; | |
5414 | bs->print_it = print_it_noop; | |
5415 | } | |
f431efe5 PA |
5416 | } |
5417 | } | |
5418 | ||
ddfe970e KS |
5419 | return bs_head; |
5420 | } | |
5421 | ||
5422 | /* See breakpoint.h. */ | |
5423 | ||
313f3b21 | 5424 | bpstat * |
ddfe970e | 5425 | bpstat_stop_status (const address_space *aspace, |
00431a78 | 5426 | CORE_ADDR bp_addr, thread_info *thread, |
c272a98c | 5427 | const target_waitstatus &ws, |
313f3b21 | 5428 | bpstat *stop_chain) |
ddfe970e KS |
5429 | { |
5430 | struct breakpoint *b = NULL; | |
5431 | /* First item of allocated bpstat's. */ | |
313f3b21 SM |
5432 | bpstat *bs_head = stop_chain; |
5433 | bpstat *bs; | |
ddfe970e KS |
5434 | int need_remove_insert; |
5435 | int removed_any; | |
5436 | ||
5437 | /* First, build the bpstat chain with locations that explain a | |
5438 | target stop, while being careful to not set the target running, | |
5439 | as that may invalidate locations (in particular watchpoint | |
5440 | locations are recreated). Resuming will happen here with | |
5441 | breakpoint conditions or watchpoint expressions that include | |
5442 | inferior function calls. */ | |
5443 | if (bs_head == NULL) | |
5444 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5445 | ||
edcc5120 TT |
5446 | /* A bit of special processing for shlib breakpoints. We need to |
5447 | process solib loading here, so that the lists of loaded and | |
5448 | unloaded libraries are correct before we handle "catch load" and | |
5449 | "catch unload". */ | |
5450 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5451 | { | |
5d268276 | 5452 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5453 | { |
5454 | handle_solib_event (); | |
5455 | break; | |
5456 | } | |
5457 | } | |
5458 | ||
f431efe5 PA |
5459 | /* Now go through the locations that caused the target to stop, and |
5460 | check whether we're interested in reporting this stop to higher | |
5461 | layers, or whether we should resume the target transparently. */ | |
5462 | ||
5463 | removed_any = 0; | |
5464 | ||
5760d0ab | 5465 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5466 | { |
5467 | if (!bs->stop) | |
5468 | continue; | |
5469 | ||
f431efe5 | 5470 | b = bs->breakpoint_at; |
348d480f PA |
5471 | b->ops->check_status (bs); |
5472 | if (bs->stop) | |
28010a5d | 5473 | { |
00431a78 | 5474 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5475 | |
429374b8 JK |
5476 | if (bs->stop) |
5477 | { | |
5478 | ++(b->hit_count); | |
c906108c | 5479 | |
4a64f543 | 5480 | /* We will stop here. */ |
429374b8 JK |
5481 | if (b->disposition == disp_disable) |
5482 | { | |
816338b5 | 5483 | --(b->enable_count); |
1a853c52 | 5484 | if (b->enable_count <= 0) |
429374b8 | 5485 | b->enable_state = bp_disabled; |
f431efe5 | 5486 | removed_any = 1; |
429374b8 | 5487 | } |
bd7ccaa9 | 5488 | gdb::observers::breakpoint_modified.notify (b); |
429374b8 JK |
5489 | if (b->silent) |
5490 | bs->print = 0; | |
5491 | bs->commands = b->commands; | |
abf85f46 | 5492 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5493 | ? bs->commands.get () : NULL)) |
abf85f46 | 5494 | bs->print = 0; |
9d6e6e84 HZ |
5495 | |
5496 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5497 | } |
5498 | ||
348d480f | 5499 | } |
a9b3a50f PA |
5500 | |
5501 | /* Print nothing for this entry if we don't stop or don't | |
5502 | print. */ | |
5503 | if (!bs->stop || !bs->print) | |
5504 | bs->print_it = print_it_noop; | |
429374b8 | 5505 | } |
876fa593 | 5506 | |
d983da9c DJ |
5507 | /* If we aren't stopping, the value of some hardware watchpoint may |
5508 | not have changed, but the intermediate memory locations we are | |
5509 | watching may have. Don't bother if we're stopping; this will get | |
5510 | done later. */ | |
d832cb68 | 5511 | need_remove_insert = 0; |
5760d0ab JK |
5512 | if (! bpstat_causes_stop (bs_head)) |
5513 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5514 | if (!bs->stop |
f431efe5 PA |
5515 | && bs->breakpoint_at |
5516 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5517 | { |
3a5c3e22 PA |
5518 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5519 | ||
5520 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5521 | need_remove_insert = 1; |
d983da9c DJ |
5522 | } |
5523 | ||
d832cb68 | 5524 | if (need_remove_insert) |
44702360 | 5525 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5526 | else if (removed_any) |
44702360 | 5527 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5528 | |
5760d0ab | 5529 | return bs_head; |
c906108c | 5530 | } |
628fe4e4 | 5531 | |
d37e0847 PA |
5532 | /* See breakpoint.h. */ |
5533 | ||
5534 | bpstat * | |
5535 | bpstat_stop_status_nowatch (const address_space *aspace, CORE_ADDR bp_addr, | |
5536 | thread_info *thread, const target_waitstatus &ws) | |
5537 | { | |
5538 | gdb_assert (!target_stopped_by_watchpoint ()); | |
5539 | ||
5540 | /* Clear all watchpoints' 'watchpoint_triggered' value from a | |
5541 | previous stop to avoid confusing bpstat_stop_status. */ | |
5542 | watchpoints_triggered (ws); | |
5543 | ||
5544 | return bpstat_stop_status (aspace, bp_addr, thread, ws); | |
5545 | } | |
5546 | ||
628fe4e4 | 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 |
313f3b21 | 5576 | bpstat_what (bpstat *bs_head) |
c906108c | 5577 | { |
c906108c | 5578 | struct bpstat_what retval; |
313f3b21 | 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 | 5753 | void |
313f3b21 | 5754 | bpstat_run_callbacks (bpstat *bs_head) |
243a9253 | 5755 | { |
313f3b21 | 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 | |
313f3b21 | 5794 | bpstat_causes_stop (bpstat *bs) |
67822962 PA |
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 | |
6c92c339 | 5805 | /* Compute a number of spaces suitable to indent the next line |
170b53b2 UW |
5806 | so it starts at the position corresponding to the table column |
5807 | named COL_NAME in the currently active table of UIOUT. */ | |
5808 | ||
6c92c339 | 5809 | static int |
170b53b2 UW |
5810 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) |
5811 | { | |
170b53b2 | 5812 | int i, total_width, width, align; |
c5209615 | 5813 | const char *text; |
170b53b2 UW |
5814 | |
5815 | total_width = 0; | |
112e8700 | 5816 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5817 | { |
5818 | if (strcmp (text, col_name) == 0) | |
6c92c339 | 5819 | return total_width; |
170b53b2 UW |
5820 | |
5821 | total_width += width + 1; | |
5822 | } | |
5823 | ||
6c92c339 | 5824 | return 0; |
170b53b2 UW |
5825 | } |
5826 | ||
b775012e LM |
5827 | /* Determine if the locations of this breakpoint will have their conditions |
5828 | evaluated by the target, host or a mix of both. Returns the following: | |
5829 | ||
5830 | "host": Host evals condition. | |
5831 | "host or target": Host or Target evals condition. | |
5832 | "target": Target evals condition. | |
5833 | */ | |
5834 | ||
5835 | static const char * | |
5836 | bp_condition_evaluator (struct breakpoint *b) | |
5837 | { | |
b775012e LM |
5838 | char host_evals = 0; |
5839 | char target_evals = 0; | |
5840 | ||
5841 | if (!b) | |
5842 | return NULL; | |
5843 | ||
5844 | if (!is_breakpoint (b)) | |
5845 | return NULL; | |
5846 | ||
5847 | if (gdb_evaluates_breakpoint_condition_p () | |
5848 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5849 | return condition_evaluation_host; | |
5850 | ||
40cb8ca5 | 5851 | for (bp_location *bl : b->locations ()) |
b775012e LM |
5852 | { |
5853 | if (bl->cond_bytecode) | |
5854 | target_evals++; | |
5855 | else | |
5856 | host_evals++; | |
5857 | } | |
5858 | ||
5859 | if (host_evals && target_evals) | |
5860 | return condition_evaluation_both; | |
5861 | else if (target_evals) | |
5862 | return condition_evaluation_target; | |
5863 | else | |
5864 | return condition_evaluation_host; | |
5865 | } | |
5866 | ||
5867 | /* Determine the breakpoint location's condition evaluator. This is | |
5868 | similar to bp_condition_evaluator, but for locations. */ | |
5869 | ||
5870 | static const char * | |
5871 | bp_location_condition_evaluator (struct bp_location *bl) | |
5872 | { | |
5873 | if (bl && !is_breakpoint (bl->owner)) | |
5874 | return NULL; | |
5875 | ||
5876 | if (gdb_evaluates_breakpoint_condition_p () | |
5877 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5878 | return condition_evaluation_host; | |
5879 | ||
5880 | if (bl && bl->cond_bytecode) | |
5881 | return condition_evaluation_target; | |
5882 | else | |
5883 | return condition_evaluation_host; | |
5884 | } | |
5885 | ||
859825b8 JK |
5886 | /* Print the LOC location out of the list of B->LOC locations. */ |
5887 | ||
170b53b2 UW |
5888 | static void |
5889 | print_breakpoint_location (struct breakpoint *b, | |
5890 | struct bp_location *loc) | |
0d381245 | 5891 | { |
79a45e25 | 5892 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5893 | |
5894 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5895 | |
859825b8 JK |
5896 | if (loc != NULL && loc->shlib_disabled) |
5897 | loc = NULL; | |
5898 | ||
6c95b8df PA |
5899 | if (loc != NULL) |
5900 | set_current_program_space (loc->pspace); | |
5901 | ||
56435ebe | 5902 | if (b->display_canonical) |
d28cd78a | 5903 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5904 | else if (loc && loc->symtab) |
0d381245 | 5905 | { |
4a27f119 KS |
5906 | const struct symbol *sym = loc->symbol; |
5907 | ||
0d381245 VP |
5908 | if (sym) |
5909 | { | |
112e8700 | 5910 | uiout->text ("in "); |
987012b8 | 5911 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 5912 | function_name_style.style ()); |
112e8700 SM |
5913 | uiout->text (" "); |
5914 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5915 | uiout->text ("at "); | |
0d381245 | 5916 | } |
112e8700 | 5917 | uiout->field_string ("file", |
cbe56571 | 5918 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 5919 | file_name_style.style ()); |
112e8700 | 5920 | uiout->text (":"); |
05cba821 | 5921 | |
112e8700 SM |
5922 | if (uiout->is_mi_like_p ()) |
5923 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5924 | |
381befee | 5925 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 5926 | } |
859825b8 | 5927 | else if (loc) |
0d381245 | 5928 | { |
d7e74731 | 5929 | string_file stb; |
170b53b2 | 5930 | |
d7e74731 | 5931 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5932 | demangle, ""); |
112e8700 | 5933 | uiout->field_stream ("at", stb); |
0d381245 | 5934 | } |
859825b8 | 5935 | else |
f00aae0f | 5936 | { |
d28cd78a TT |
5937 | uiout->field_string ("pending", |
5938 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5939 | /* If extra_string is available, it could be holding a condition |
5940 | or dprintf arguments. In either case, make sure it is printed, | |
5941 | too, but only for non-MI streams. */ | |
112e8700 | 5942 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5943 | { |
5944 | if (b->type == bp_dprintf) | |
112e8700 | 5945 | uiout->text (","); |
f00aae0f | 5946 | else |
112e8700 | 5947 | uiout->text (" "); |
6f781ee3 | 5948 | uiout->text (b->extra_string.get ()); |
f00aae0f KS |
5949 | } |
5950 | } | |
6c95b8df | 5951 | |
b775012e LM |
5952 | if (loc && is_breakpoint (b) |
5953 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5954 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5955 | { | |
112e8700 SM |
5956 | uiout->text (" ("); |
5957 | uiout->field_string ("evaluated-by", | |
b775012e | 5958 | bp_location_condition_evaluator (loc)); |
112e8700 | 5959 | uiout->text (")"); |
b775012e | 5960 | } |
0d381245 VP |
5961 | } |
5962 | ||
269b11a2 PA |
5963 | static const char * |
5964 | bptype_string (enum bptype type) | |
c906108c | 5965 | { |
c4093a6a JM |
5966 | struct ep_type_description |
5967 | { | |
5968 | enum bptype type; | |
a121b7c1 | 5969 | const char *description; |
c4093a6a JM |
5970 | }; |
5971 | static struct ep_type_description bptypes[] = | |
c906108c | 5972 | { |
c5aa993b JM |
5973 | {bp_none, "?deleted?"}, |
5974 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5975 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5976 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5977 | {bp_until, "until"}, |
5978 | {bp_finish, "finish"}, | |
5979 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5980 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5981 | {bp_read_watchpoint, "read watchpoint"}, |
5982 | {bp_access_watchpoint, "acc watchpoint"}, | |
5983 | {bp_longjmp, "longjmp"}, | |
5984 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5985 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5986 | {bp_exception, "exception"}, |
5987 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5988 | {bp_step_resume, "step resume"}, |
2c03e5be | 5989 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5990 | {bp_watchpoint_scope, "watchpoint scope"}, |
5991 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5992 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5993 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5994 | {bp_thread_event, "thread events"}, |
1900040c | 5995 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5996 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5997 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5998 | {bp_exception_master, "exception master"}, |
ce78b96d | 5999 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6000 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6001 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6002 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6003 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6004 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6005 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6006 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6007 | }; |
269b11a2 PA |
6008 | |
6009 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6010 | || ((int) type != bptypes[(int) type].type)) | |
6011 | internal_error (__FILE__, __LINE__, | |
6012 | _("bptypes table does not describe type #%d."), | |
6013 | (int) type); | |
6014 | ||
6015 | return bptypes[(int) type].description; | |
6016 | } | |
6017 | ||
998580f1 MK |
6018 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6019 | For CLI, prefix the list with the string 'inf'. */ | |
6020 | ||
6021 | static void | |
6022 | output_thread_groups (struct ui_out *uiout, | |
6023 | const char *field_name, | |
5c632425 | 6024 | const std::vector<int> &inf_nums, |
998580f1 MK |
6025 | int mi_only) |
6026 | { | |
112e8700 | 6027 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6028 | |
6029 | /* For backward compatibility, don't display inferiors in CLI unless | |
6030 | there are several. Always display them for MI. */ | |
6031 | if (!is_mi && mi_only) | |
6032 | return; | |
6033 | ||
10f489e5 | 6034 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6035 | |
5c632425 | 6036 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6037 | { |
6038 | if (is_mi) | |
6039 | { | |
6040 | char mi_group[10]; | |
6041 | ||
5c632425 | 6042 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6043 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6044 | } |
6045 | else | |
6046 | { | |
6047 | if (i == 0) | |
112e8700 | 6048 | uiout->text (" inf "); |
998580f1 | 6049 | else |
112e8700 | 6050 | uiout->text (", "); |
998580f1 | 6051 | |
5c632425 | 6052 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6053 | } |
6054 | } | |
998580f1 MK |
6055 | } |
6056 | ||
a38118e5 PA |
6057 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6058 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6059 | info breakpoints" show the software breakpoint locations of | |
6060 | catchpoints, which are considered internal implementation | |
c01e038b TT |
6061 | detail. Returns true if RAW_LOC is false and if the breakpoint's |
6062 | print_one method did something; false otherwise. */ | |
269b11a2 | 6063 | |
c01e038b | 6064 | static bool |
269b11a2 PA |
6065 | print_one_breakpoint_location (struct breakpoint *b, |
6066 | struct bp_location *loc, | |
6067 | int loc_number, | |
6068 | struct bp_location **last_loc, | |
a38118e5 | 6069 | int allflag, bool raw_loc) |
269b11a2 PA |
6070 | { |
6071 | struct command_line *l; | |
c2c6d25f | 6072 | static char bpenables[] = "nynny"; |
c906108c | 6073 | |
79a45e25 | 6074 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6075 | int header_of_multiple = 0; |
6076 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6077 | struct value_print_options opts; |
6078 | ||
6079 | get_user_print_options (&opts); | |
0d381245 VP |
6080 | |
6081 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6082 | /* See comment in print_one_breakpoint concerning treatment of |
6083 | breakpoints with single disabled location. */ | |
0d381245 VP |
6084 | if (loc == NULL |
6085 | && (b->loc != NULL | |
b5fa468f TBA |
6086 | && (b->loc->next != NULL |
6087 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
0d381245 VP |
6088 | header_of_multiple = 1; |
6089 | if (loc == NULL) | |
6090 | loc = b->loc; | |
6091 | ||
c4093a6a JM |
6092 | annotate_record (); |
6093 | ||
6094 | /* 1 */ | |
6095 | annotate_field (0); | |
0d381245 | 6096 | if (part_of_multiple) |
528e1572 | 6097 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6098 | else |
381befee | 6099 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6100 | |
6101 | /* 2 */ | |
6102 | annotate_field (1); | |
0d381245 | 6103 | if (part_of_multiple) |
112e8700 | 6104 | uiout->field_skip ("type"); |
269b11a2 | 6105 | else |
112e8700 | 6106 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6107 | |
6108 | /* 3 */ | |
6109 | annotate_field (2); | |
0d381245 | 6110 | if (part_of_multiple) |
112e8700 | 6111 | uiout->field_skip ("disp"); |
0d381245 | 6112 | else |
112e8700 | 6113 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6114 | |
c4093a6a JM |
6115 | /* 4 */ |
6116 | annotate_field (3); | |
85c88e2a TBA |
6117 | /* For locations that are disabled because of an invalid condition, |
6118 | display "N*" on CLI, where "*" refers to a footnote below the | |
6119 | table. For MI, simply display a "N" without a footnote. */ | |
6120 | const char *N = (uiout->is_mi_like_p ()) ? "N" : "N*"; | |
0d381245 | 6121 | if (part_of_multiple) |
85c88e2a | 6122 | uiout->field_string ("enabled", (loc->disabled_by_cond ? N |
b5fa468f | 6123 | : (loc->enabled ? "y" : "n"))); |
0d381245 | 6124 | else |
112e8700 | 6125 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6126 | |
c4093a6a | 6127 | /* 5 and 6 */ |
c01e038b TT |
6128 | bool result = false; |
6129 | if (!raw_loc && b->ops != NULL && b->ops->print_one (b, last_loc)) | |
6130 | result = true; | |
3086aeae | 6131 | else |
a38118e5 PA |
6132 | { |
6133 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6134 | { |
6135 | struct watchpoint *w = (struct watchpoint *) b; | |
6136 | ||
6137 | /* Field 4, the address, is omitted (which makes the columns | |
6138 | not line up too nicely with the headers, but the effect | |
6139 | is relatively readable). */ | |
6140 | if (opts.addressprint) | |
112e8700 | 6141 | uiout->field_skip ("addr"); |
3a5c3e22 | 6142 | annotate_field (5); |
a4c50be3 | 6143 | uiout->field_string ("what", w->exp_string.get ()); |
3a5c3e22 | 6144 | } |
f06f1252 TT |
6145 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6146 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6147 | { |
6148 | if (opts.addressprint) | |
6149 | { | |
6150 | annotate_field (4); | |
6151 | if (header_of_multiple) | |
7f6aba03 TT |
6152 | uiout->field_string ("addr", "<MULTIPLE>", |
6153 | metadata_style.style ()); | |
a38118e5 | 6154 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6155 | uiout->field_string ("addr", "<PENDING>", |
6156 | metadata_style.style ()); | |
a38118e5 PA |
6157 | else |
6158 | uiout->field_core_addr ("addr", | |
6159 | loc->gdbarch, loc->address); | |
6160 | } | |
6161 | annotate_field (5); | |
6162 | if (!header_of_multiple) | |
6163 | print_breakpoint_location (b, loc); | |
6164 | if (b->loc) | |
6165 | *last_loc = b->loc; | |
6166 | } | |
6167 | } | |
6c95b8df | 6168 | |
998580f1 | 6169 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6170 | { |
5c632425 | 6171 | std::vector<int> inf_nums; |
998580f1 | 6172 | int mi_only = 1; |
6c95b8df | 6173 | |
08036331 | 6174 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6175 | { |
6176 | if (inf->pspace == loc->pspace) | |
5c632425 | 6177 | inf_nums.push_back (inf->num); |
6c95b8df | 6178 | } |
998580f1 | 6179 | |
dda83cd7 | 6180 | /* For backward compatibility, don't display inferiors in CLI unless |
998580f1 MK |
6181 | there are several. Always display for MI. */ |
6182 | if (allflag | |
6183 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6184 | && (program_spaces.size () > 1 |
998580f1 MK |
6185 | || number_of_inferiors () > 1) |
6186 | /* LOC is for existing B, it cannot be in | |
6187 | moribund_locations and thus having NULL OWNER. */ | |
6188 | && loc->owner->type != bp_catchpoint)) | |
6189 | mi_only = 0; | |
5c632425 | 6190 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6191 | } |
6192 | ||
4a306c9a | 6193 | if (!part_of_multiple) |
c4093a6a | 6194 | { |
4a306c9a JB |
6195 | if (b->thread != -1) |
6196 | { | |
6197 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6198 | "stop only in" line a little further down. */ |
112e8700 | 6199 | uiout->text (" thread "); |
381befee | 6200 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6201 | } |
6202 | else if (b->task != 0) | |
6203 | { | |
112e8700 | 6204 | uiout->text (" task "); |
381befee | 6205 | uiout->field_signed ("task", b->task); |
4a306c9a | 6206 | } |
c4093a6a | 6207 | } |
f1310107 | 6208 | |
112e8700 | 6209 | uiout->text ("\n"); |
f1310107 | 6210 | |
348d480f | 6211 | if (!part_of_multiple) |
f1310107 TJB |
6212 | b->ops->print_one_detail (b, uiout); |
6213 | ||
0d381245 | 6214 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6215 | { |
6216 | annotate_field (6); | |
112e8700 | 6217 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6218 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6219 | the frame ID. */ |
112e8700 | 6220 | uiout->field_core_addr ("frame", |
5af949e3 | 6221 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6222 | uiout->text ("\n"); |
c4093a6a JM |
6223 | } |
6224 | ||
28010a5d | 6225 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6226 | { |
6227 | annotate_field (7); | |
d77f58be | 6228 | if (is_tracepoint (b)) |
112e8700 | 6229 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6230 | else |
112e8700 | 6231 | uiout->text ("\tstop only if "); |
6f781ee3 | 6232 | uiout->field_string ("cond", b->cond_string.get ()); |
b775012e LM |
6233 | |
6234 | /* Print whether the target is doing the breakpoint's condition | |
6235 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6236 | if (is_breakpoint (b) | |
6237 | && breakpoint_condition_evaluation_mode () | |
6238 | == condition_evaluation_target) | |
6239 | { | |
6a831f06 PA |
6240 | uiout->message (" (%pF evals)", |
6241 | string_field ("evaluated-by", | |
6242 | bp_condition_evaluator (b))); | |
b775012e | 6243 | } |
112e8700 | 6244 | uiout->text ("\n"); |
0101ce28 JJ |
6245 | } |
6246 | ||
0d381245 | 6247 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6248 | { |
4a64f543 | 6249 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6250 | uiout->text ("\tstop only in thread "); |
6251 | if (uiout->is_mi_like_p ()) | |
381befee | 6252 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6253 | else |
6254 | { | |
6255 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6256 | ||
112e8700 | 6257 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6258 | } |
112e8700 | 6259 | uiout->text ("\n"); |
c4093a6a JM |
6260 | } |
6261 | ||
556ec64d YQ |
6262 | if (!part_of_multiple) |
6263 | { | |
6264 | if (b->hit_count) | |
31f56a27 YQ |
6265 | { |
6266 | /* FIXME should make an annotation for this. */ | |
6267 | if (is_catchpoint (b)) | |
112e8700 | 6268 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6269 | else if (is_tracepoint (b)) |
112e8700 | 6270 | uiout->text ("\ttracepoint"); |
31f56a27 | 6271 | else |
112e8700 SM |
6272 | uiout->text ("\tbreakpoint"); |
6273 | uiout->text (" already hit "); | |
381befee | 6274 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6275 | if (b->hit_count == 1) |
112e8700 | 6276 | uiout->text (" time\n"); |
31f56a27 | 6277 | else |
112e8700 | 6278 | uiout->text (" times\n"); |
31f56a27 | 6279 | } |
556ec64d YQ |
6280 | else |
6281 | { | |
31f56a27 | 6282 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6283 | if (uiout->is_mi_like_p ()) |
381befee | 6284 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6285 | } |
6286 | } | |
8b93c638 | 6287 | |
0d381245 | 6288 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6289 | { |
6290 | annotate_field (8); | |
6a831f06 PA |
6291 | uiout->message ("\tignore next %pF hits\n", |
6292 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6293 | } |
059fb39f | 6294 | |
816338b5 SS |
6295 | /* Note that an enable count of 1 corresponds to "enable once" |
6296 | behavior, which is reported by the combination of enablement and | |
6297 | disposition, so we don't need to mention it here. */ | |
6298 | if (!part_of_multiple && b->enable_count > 1) | |
6299 | { | |
6300 | annotate_field (8); | |
112e8700 | 6301 | uiout->text ("\tdisable after "); |
816338b5 SS |
6302 | /* Tweak the wording to clarify that ignore and enable counts |
6303 | are distinct, and have additive effect. */ | |
6304 | if (b->ignore_count) | |
112e8700 | 6305 | uiout->text ("additional "); |
816338b5 | 6306 | else |
112e8700 | 6307 | uiout->text ("next "); |
381befee | 6308 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6309 | uiout->text (" hits\n"); |
816338b5 SS |
6310 | } |
6311 | ||
f196051f SS |
6312 | if (!part_of_multiple && is_tracepoint (b)) |
6313 | { | |
6314 | struct tracepoint *tp = (struct tracepoint *) b; | |
6315 | ||
6316 | if (tp->traceframe_usage) | |
6317 | { | |
112e8700 | 6318 | uiout->text ("\ttrace buffer usage "); |
381befee | 6319 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6320 | uiout->text (" bytes\n"); |
f196051f SS |
6321 | } |
6322 | } | |
d3ce09f5 | 6323 | |
d1b0a7bf | 6324 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6325 | if (!part_of_multiple && l) |
c4093a6a JM |
6326 | { |
6327 | annotate_field (9); | |
2e783024 | 6328 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6329 | print_command_lines (uiout, l, 4); |
c4093a6a | 6330 | } |
d24317b4 | 6331 | |
d9b3f62e | 6332 | if (is_tracepoint (b)) |
1042e4c0 | 6333 | { |
d9b3f62e PA |
6334 | struct tracepoint *t = (struct tracepoint *) b; |
6335 | ||
6336 | if (!part_of_multiple && t->pass_count) | |
6337 | { | |
6338 | annotate_field (10); | |
112e8700 | 6339 | uiout->text ("\tpass count "); |
381befee | 6340 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6341 | uiout->text (" \n"); |
d9b3f62e | 6342 | } |
f2a8bc8a YQ |
6343 | |
6344 | /* Don't display it when tracepoint or tracepoint location is | |
6345 | pending. */ | |
6346 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6347 | { | |
6348 | annotate_field (11); | |
6349 | ||
112e8700 SM |
6350 | if (uiout->is_mi_like_p ()) |
6351 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6352 | loc->inserted ? "y" : "n"); |
6353 | else | |
6354 | { | |
6355 | if (loc->inserted) | |
112e8700 | 6356 | uiout->text ("\t"); |
f2a8bc8a | 6357 | else |
112e8700 SM |
6358 | uiout->text ("\tnot "); |
6359 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6360 | } |
6361 | } | |
1042e4c0 SS |
6362 | } |
6363 | ||
112e8700 | 6364 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6365 | { |
3a5c3e22 PA |
6366 | if (is_watchpoint (b)) |
6367 | { | |
6368 | struct watchpoint *w = (struct watchpoint *) b; | |
6369 | ||
a4c50be3 | 6370 | uiout->field_string ("original-location", w->exp_string.get ()); |
3a5c3e22 | 6371 | } |
f00aae0f | 6372 | else if (b->location != NULL |
d28cd78a | 6373 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6374 | uiout->field_string ("original-location", |
d28cd78a | 6375 | event_location_to_string (b->location.get ())); |
d24317b4 | 6376 | } |
c01e038b TT |
6377 | |
6378 | return result; | |
c4093a6a | 6379 | } |
c5aa993b | 6380 | |
13674803 SM |
6381 | /* See breakpoint.h. */ |
6382 | ||
6383 | bool fix_multi_location_breakpoint_output_globally = false; | |
6384 | ||
0d381245 VP |
6385 | static void |
6386 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6387 | struct bp_location **last_loc, |
6c95b8df | 6388 | int allflag) |
0d381245 | 6389 | { |
79a45e25 | 6390 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6391 | bool use_fixed_output |
6392 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6393 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6394 | |
b4be1b06 | 6395 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
c01e038b TT |
6396 | bool printed = print_one_breakpoint_location (b, NULL, 0, last_loc, |
6397 | allflag, false); | |
8d3788bd | 6398 | |
b4be1b06 SM |
6399 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6400 | are outside. */ | |
6401 | if (!use_fixed_output) | |
6402 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6403 | |
6404 | /* If this breakpoint has custom print function, | |
6405 | it's already printed. Otherwise, print individual | |
6406 | locations, if any. */ | |
c01e038b | 6407 | if (!printed || allflag) |
0d381245 | 6408 | { |
4a64f543 MS |
6409 | /* If breakpoint has a single location that is disabled, we |
6410 | print it as if it had several locations, since otherwise it's | |
6411 | hard to represent "breakpoint enabled, location disabled" | |
6412 | situation. | |
6413 | ||
6414 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6415 | internally, that's not a property exposed to users. |
6416 | ||
6417 | Likewise, while catchpoints may be implemented with | |
6418 | breakpoints (e.g., catch throw), that's not a property | |
6419 | exposed to users. We do however display the internal | |
6420 | breakpoint locations with "maint info breakpoints". */ | |
6421 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6422 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6423 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6424 | && (allflag |
b5fa468f TBA |
6425 | || (b->loc && (b->loc->next |
6426 | || !b->loc->enabled | |
6427 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6428 | { |
b4be1b06 SM |
6429 | gdb::optional<ui_out_emit_list> locations_list; |
6430 | ||
6431 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6432 | MI record. For later versions, place breakpoint locations in a | |
6433 | list. */ | |
6434 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6435 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6436 | |
b4be1b06 | 6437 | int n = 1; |
40cb8ca5 | 6438 | for (bp_location *loc : b->locations ()) |
8d3788bd | 6439 | { |
b4be1b06 | 6440 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6441 | print_one_breakpoint_location (b, loc, n, last_loc, |
6442 | allflag, allflag); | |
40cb8ca5 | 6443 | n++; |
8d3788bd | 6444 | } |
0d381245 VP |
6445 | } |
6446 | } | |
6447 | } | |
6448 | ||
a6d9a66e UW |
6449 | static int |
6450 | breakpoint_address_bits (struct breakpoint *b) | |
6451 | { | |
6452 | int print_address_bits = 0; | |
a6d9a66e | 6453 | |
c6d81124 PA |
6454 | /* Software watchpoints that aren't watching memory don't have an |
6455 | address to print. */ | |
6456 | if (is_no_memory_software_watchpoint (b)) | |
6457 | return 0; | |
6458 | ||
40cb8ca5 | 6459 | for (bp_location *loc : b->locations ()) |
a6d9a66e | 6460 | { |
c7437ca6 PA |
6461 | int addr_bit; |
6462 | ||
c7437ca6 | 6463 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6464 | if (addr_bit > print_address_bits) |
6465 | print_address_bits = addr_bit; | |
6466 | } | |
6467 | ||
6468 | return print_address_bits; | |
6469 | } | |
0d381245 | 6470 | |
65630365 | 6471 | /* See breakpoint.h. */ |
c5aa993b | 6472 | |
65630365 PA |
6473 | void |
6474 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6475 | { |
a6d9a66e | 6476 | struct bp_location *dummy_loc = NULL; |
65630365 | 6477 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6478 | } |
c5aa993b | 6479 | |
09d682a4 TT |
6480 | /* Return true if this breakpoint was set by the user, false if it is |
6481 | internal or momentary. */ | |
6482 | ||
6483 | int | |
6484 | user_breakpoint_p (struct breakpoint *b) | |
6485 | { | |
46c6471b | 6486 | return b->number > 0; |
09d682a4 TT |
6487 | } |
6488 | ||
93daf339 TT |
6489 | /* See breakpoint.h. */ |
6490 | ||
6491 | int | |
6492 | pending_breakpoint_p (struct breakpoint *b) | |
6493 | { | |
6494 | return b->loc == NULL; | |
6495 | } | |
6496 | ||
5c458ae8 SM |
6497 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6498 | ||
6499 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6500 | understood by number_or_range_parser. Only breakpoints included in this | |
6501 | list are then printed. | |
6502 | ||
6503 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6504 | ||
6505 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6506 | ones for which it returns true. | |
6507 | ||
6508 | Return the total number of breakpoints listed. */ | |
c906108c | 6509 | |
d77f58be | 6510 | static int |
5c458ae8 | 6511 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6512 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6513 | { |
a6d9a66e | 6514 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6515 | int nr_printable_breakpoints; |
79a45b7d | 6516 | struct value_print_options opts; |
a6d9a66e | 6517 | int print_address_bits = 0; |
269b11a2 | 6518 | int print_type_col_width = 14; |
79a45e25 | 6519 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6520 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6521 | |
79a45b7d TT |
6522 | get_user_print_options (&opts); |
6523 | ||
4a64f543 MS |
6524 | /* Compute the number of rows in the table, as well as the size |
6525 | required for address fields. */ | |
7f3b0473 | 6526 | nr_printable_breakpoints = 0; |
43892fdf | 6527 | for (breakpoint *b : all_breakpoints ()) |
e5a67952 MS |
6528 | { |
6529 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6530 | if (filter && !filter (b)) | |
6531 | continue; | |
6532 | ||
5c458ae8 | 6533 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6534 | accept. Skip the others. */ |
5c458ae8 | 6535 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6536 | { |
5c458ae8 | 6537 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6538 | continue; |
5c458ae8 | 6539 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6540 | continue; |
6541 | } | |
269b11a2 | 6542 | |
5c458ae8 | 6543 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6544 | { |
6545 | int addr_bit, type_len; | |
a6d9a66e | 6546 | |
e5a67952 MS |
6547 | addr_bit = breakpoint_address_bits (b); |
6548 | if (addr_bit > print_address_bits) | |
6549 | print_address_bits = addr_bit; | |
269b11a2 | 6550 | |
e5a67952 MS |
6551 | type_len = strlen (bptype_string (b->type)); |
6552 | if (type_len > print_type_col_width) | |
6553 | print_type_col_width = type_len; | |
6554 | ||
6555 | nr_printable_breakpoints++; | |
6556 | } | |
6557 | } | |
7f3b0473 | 6558 | |
4a2b031d TT |
6559 | { |
6560 | ui_out_emit_table table_emitter (uiout, | |
6561 | opts.addressprint ? 6 : 5, | |
6562 | nr_printable_breakpoints, | |
6563 | "BreakpointTable"); | |
6564 | ||
6565 | if (nr_printable_breakpoints > 0) | |
6566 | annotate_breakpoints_headers (); | |
6567 | if (nr_printable_breakpoints > 0) | |
6568 | annotate_field (0); | |
6569 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6570 | if (nr_printable_breakpoints > 0) | |
6571 | annotate_field (1); | |
6572 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6573 | if (nr_printable_breakpoints > 0) | |
6574 | annotate_field (2); | |
6575 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6576 | if (nr_printable_breakpoints > 0) | |
6577 | annotate_field (3); | |
6578 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6579 | if (opts.addressprint) | |
6580 | { | |
6581 | if (nr_printable_breakpoints > 0) | |
6582 | annotate_field (4); | |
6583 | if (print_address_bits <= 32) | |
6584 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6585 | else | |
6586 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6587 | } | |
6588 | if (nr_printable_breakpoints > 0) | |
6589 | annotate_field (5); | |
6590 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6591 | uiout->table_body (); | |
6592 | if (nr_printable_breakpoints > 0) | |
6593 | annotate_breakpoints_table (); | |
6594 | ||
43892fdf | 6595 | for (breakpoint *b : all_breakpoints ()) |
4a2b031d TT |
6596 | { |
6597 | QUIT; | |
6598 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6599 | if (filter && !filter (b)) | |
6600 | continue; | |
e5a67952 | 6601 | |
5c458ae8 | 6602 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6603 | accept. Skip the others. */ |
e5a67952 | 6604 | |
5c458ae8 | 6605 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6606 | { |
5c458ae8 | 6607 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6608 | { |
5c458ae8 | 6609 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6610 | continue; |
6611 | } | |
6612 | else /* all others */ | |
6613 | { | |
5c458ae8 | 6614 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6615 | continue; |
6616 | } | |
6617 | } | |
6618 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6619 | show_internal is set. */ |
6620 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6621 | { |
6622 | print_one_breakpoint (b, &last_loc, show_internal); | |
40cb8ca5 | 6623 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
6624 | if (loc->disabled_by_cond) |
6625 | has_disabled_by_cond_location = true; | |
6626 | } | |
4a2b031d TT |
6627 | } |
6628 | } | |
698384cd | 6629 | |
7f3b0473 | 6630 | if (nr_printable_breakpoints == 0) |
c906108c | 6631 | { |
4a64f543 MS |
6632 | /* If there's a filter, let the caller decide how to report |
6633 | empty list. */ | |
d77f58be SS |
6634 | if (!filter) |
6635 | { | |
5c458ae8 | 6636 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6637 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6638 | else |
112e8700 | 6639 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6640 | bp_num_list); |
d77f58be | 6641 | } |
c906108c SS |
6642 | } |
6643 | else | |
c4093a6a | 6644 | { |
a6d9a66e UW |
6645 | if (last_loc && !server_command) |
6646 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f | 6647 | |
85c88e2a | 6648 | if (has_disabled_by_cond_location && !uiout->is_mi_like_p ()) |
b5fa468f TBA |
6649 | uiout->message (_("(*): Breakpoint condition is invalid at this " |
6650 | "location.\n")); | |
c4093a6a | 6651 | } |
c906108c | 6652 | |
4a64f543 | 6653 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6654 | there have been breakpoints? */ |
c906108c | 6655 | annotate_breakpoints_table_end (); |
d77f58be SS |
6656 | |
6657 | return nr_printable_breakpoints; | |
c906108c SS |
6658 | } |
6659 | ||
ad443146 SS |
6660 | /* Display the value of default-collect in a way that is generally |
6661 | compatible with the breakpoint list. */ | |
6662 | ||
6663 | static void | |
6664 | default_collect_info (void) | |
6665 | { | |
79a45e25 PA |
6666 | struct ui_out *uiout = current_uiout; |
6667 | ||
ad443146 SS |
6668 | /* If it has no value (which is frequently the case), say nothing; a |
6669 | message like "No default-collect." gets in user's face when it's | |
6670 | not wanted. */ | |
e0700ba4 | 6671 | if (default_collect.empty ()) |
ad443146 SS |
6672 | return; |
6673 | ||
6674 | /* The following phrase lines up nicely with per-tracepoint collect | |
6675 | actions. */ | |
112e8700 SM |
6676 | uiout->text ("default collect "); |
6677 | uiout->field_string ("default-collect", default_collect); | |
6678 | uiout->text (" \n"); | |
ad443146 SS |
6679 | } |
6680 | ||
c906108c | 6681 | static void |
0b39b52e | 6682 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6683 | { |
5c458ae8 | 6684 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6685 | |
6686 | default_collect_info (); | |
d77f58be SS |
6687 | } |
6688 | ||
6689 | static void | |
1d12d88f | 6690 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6691 | { |
5c458ae8 | 6692 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6693 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6694 | |
6695 | if (num_printed == 0) | |
6696 | { | |
e5a67952 | 6697 | if (args == NULL || *args == '\0') |
112e8700 | 6698 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6699 | else |
112e8700 | 6700 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6701 | } |
c906108c SS |
6702 | } |
6703 | ||
7a292a7a | 6704 | static void |
4495129a | 6705 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6706 | { |
5c458ae8 | 6707 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6708 | |
6709 | default_collect_info (); | |
c906108c SS |
6710 | } |
6711 | ||
0d381245 | 6712 | static int |
714835d5 | 6713 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6714 | struct program_space *pspace, |
714835d5 | 6715 | CORE_ADDR pc, struct obj_section *section) |
0d381245 | 6716 | { |
40cb8ca5 | 6717 | for (bp_location *bl : b->locations ()) |
0d381245 | 6718 | { |
6c95b8df PA |
6719 | if (bl->pspace == pspace |
6720 | && bl->address == pc | |
0d381245 VP |
6721 | && (!overlay_debugging || bl->section == section)) |
6722 | return 1; | |
6723 | } | |
6724 | return 0; | |
6725 | } | |
6726 | ||
672f9b60 | 6727 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6728 | concerns with logical breakpoints, so we match program spaces, not |
6729 | address spaces. */ | |
c906108c SS |
6730 | |
6731 | static void | |
6c95b8df PA |
6732 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6733 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6734 | struct obj_section *section, int thread) |
c906108c | 6735 | { |
52f0bd74 | 6736 | int others = 0; |
c906108c | 6737 | |
43892fdf | 6738 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6739 | others += (user_breakpoint_p (b) |
dda83cd7 | 6740 | && breakpoint_has_pc (b, pspace, pc, section)); |
43892fdf | 6741 | |
c906108c SS |
6742 | if (others > 0) |
6743 | { | |
a3f17187 | 6744 | if (others == 1) |
6cb06a8c | 6745 | gdb_printf (_("Note: breakpoint ")); |
a3f17187 | 6746 | else /* if (others == ???) */ |
6cb06a8c | 6747 | gdb_printf (_("Note: breakpoints ")); |
43892fdf | 6748 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6749 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6750 | { |
6751 | others--; | |
6cb06a8c | 6752 | gdb_printf ("%d", b->number); |
0d381245 | 6753 | if (b->thread == -1 && thread != -1) |
6cb06a8c | 6754 | gdb_printf (" (all threads)"); |
0d381245 | 6755 | else if (b->thread != -1) |
6cb06a8c TT |
6756 | gdb_printf (" (thread %d)", b->thread); |
6757 | gdb_printf ("%s%s ", | |
6758 | ((b->enable_state == bp_disabled | |
6759 | || b->enable_state == bp_call_disabled) | |
6760 | ? " (disabled)" | |
6761 | : ""), | |
6762 | (others > 1) ? "," | |
6763 | : ((others == 1) ? " and" : "")); | |
0d381245 | 6764 | } |
6a831f06 PA |
6765 | current_uiout->message (_("also set at pc %ps.\n"), |
6766 | styled_string (address_style.style (), | |
6767 | paddress (gdbarch, pc))); | |
c906108c SS |
6768 | } |
6769 | } | |
6770 | \f | |
c906108c | 6771 | |
cb1e4e32 PA |
6772 | /* Return true iff it is meaningful to use the address member of LOC. |
6773 | For some breakpoint types, the locations' address members are | |
6774 | irrelevant and it makes no sense to attempt to compare them to | |
6775 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6776 | |
cb1e4e32 PA |
6777 | More specifically, software watchpoints and catchpoints that are |
6778 | not backed by breakpoints always have a zero valued location | |
6779 | address and we don't want to mark breakpoints of any of these types | |
6780 | to be a duplicate of an actual breakpoint location at address | |
6781 | zero. */ | |
e4f237da | 6782 | |
cb1e4e32 PA |
6783 | static bool |
6784 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6785 | { |
cb1e4e32 | 6786 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6787 | } |
6788 | ||
6789 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6790 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6791 | ||
6792 | static int | |
4a64f543 MS |
6793 | watchpoint_locations_match (struct bp_location *loc1, |
6794 | struct bp_location *loc2) | |
2d134ed3 | 6795 | { |
3a5c3e22 PA |
6796 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6797 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6798 | ||
6799 | /* Both of them must exist. */ | |
6800 | gdb_assert (w1 != NULL); | |
6801 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6802 | |
4a64f543 MS |
6803 | /* If the target can evaluate the condition expression in hardware, |
6804 | then we we need to insert both watchpoints even if they are at | |
6805 | the same place. Otherwise the watchpoint will only trigger when | |
6806 | the condition of whichever watchpoint was inserted evaluates to | |
6807 | true, not giving a chance for GDB to check the condition of the | |
6808 | other watchpoint. */ | |
3a5c3e22 | 6809 | if ((w1->cond_exp |
4a64f543 MS |
6810 | && target_can_accel_watchpoint_condition (loc1->address, |
6811 | loc1->length, | |
0cf6dd15 | 6812 | loc1->watchpoint_type, |
4d01a485 | 6813 | w1->cond_exp.get ())) |
3a5c3e22 | 6814 | || (w2->cond_exp |
4a64f543 MS |
6815 | && target_can_accel_watchpoint_condition (loc2->address, |
6816 | loc2->length, | |
0cf6dd15 | 6817 | loc2->watchpoint_type, |
4d01a485 | 6818 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6819 | return 0; |
6820 | ||
85d721b8 PA |
6821 | /* Note that this checks the owner's type, not the location's. In |
6822 | case the target does not support read watchpoints, but does | |
6823 | support access watchpoints, we'll have bp_read_watchpoint | |
6824 | watchpoints with hw_access locations. Those should be considered | |
6825 | duplicates of hw_read locations. The hw_read locations will | |
6826 | become hw_access locations later. */ | |
2d134ed3 PA |
6827 | return (loc1->owner->type == loc2->owner->type |
6828 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6829 | && loc1->address == loc2->address | |
6830 | && loc1->length == loc2->length); | |
e4f237da KB |
6831 | } |
6832 | ||
31e77af2 | 6833 | /* See breakpoint.h. */ |
6c95b8df | 6834 | |
31e77af2 | 6835 | int |
accd0bcd YQ |
6836 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6837 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6838 | { |
f5656ead | 6839 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6840 | || aspace1 == aspace2) |
6841 | && addr1 == addr2); | |
6842 | } | |
6843 | ||
f1310107 TJB |
6844 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6845 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6846 | matches ASPACE2. On targets that have global breakpoints, the address | |
6847 | space doesn't really matter. */ | |
6848 | ||
6849 | static int | |
accd0bcd YQ |
6850 | breakpoint_address_match_range (const address_space *aspace1, |
6851 | CORE_ADDR addr1, | |
6852 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6853 | CORE_ADDR addr2) |
6854 | { | |
f5656ead | 6855 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6856 | || aspace1 == aspace2) |
6857 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6858 | } | |
6859 | ||
6860 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6861 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6862 | matches the breakpoint's address space. On targets that have global | |
6863 | breakpoints, the address space doesn't really matter. */ | |
6864 | ||
6865 | static int | |
6866 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6867 | const address_space *aspace, |
f1310107 TJB |
6868 | CORE_ADDR addr) |
6869 | { | |
6870 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6871 | aspace, addr) | |
6872 | || (bl->length | |
6873 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6874 | bl->address, bl->length, | |
6875 | aspace, addr))); | |
6876 | } | |
6877 | ||
d35ae833 PA |
6878 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6879 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6880 | match happens only if ASPACE matches the breakpoint's address | |
6881 | space. On targets that have global breakpoints, the address space | |
6882 | doesn't really matter. */ | |
6883 | ||
6884 | static int | |
6885 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6886 | const address_space *aspace, |
d35ae833 PA |
6887 | CORE_ADDR addr, int len) |
6888 | { | |
6889 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6890 | || bl->pspace->aspace == aspace) | |
6891 | { | |
6892 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6893 | ||
6894 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6895 | return 1; | |
6896 | } | |
6897 | return 0; | |
6898 | } | |
6899 | ||
1e4d1764 YQ |
6900 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6901 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6902 | true, otherwise returns false. */ | |
6903 | ||
6904 | static int | |
6905 | tracepoint_locations_match (struct bp_location *loc1, | |
6906 | struct bp_location *loc2) | |
6907 | { | |
6908 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6909 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6910 | locations at the same address of different tracepoints are regarded as | |
6911 | different locations. */ | |
6912 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6913 | else | |
6914 | return 0; | |
6915 | } | |
6916 | ||
2d134ed3 | 6917 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 6918 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
6919 | the same location. If SW_HW_BPS_MATCH is true, then software |
6920 | breakpoint locations and hardware breakpoint locations match, | |
6921 | otherwise they don't. */ | |
2d134ed3 PA |
6922 | |
6923 | static int | |
7f32a4d5 PA |
6924 | breakpoint_locations_match (struct bp_location *loc1, |
6925 | struct bp_location *loc2, | |
6926 | bool sw_hw_bps_match) | |
2d134ed3 | 6927 | { |
2bdf28a0 JK |
6928 | int hw_point1, hw_point2; |
6929 | ||
6930 | /* Both of them must not be in moribund_locations. */ | |
6931 | gdb_assert (loc1->owner != NULL); | |
6932 | gdb_assert (loc2->owner != NULL); | |
6933 | ||
6934 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6935 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6936 | |
6937 | if (hw_point1 != hw_point2) | |
6938 | return 0; | |
6939 | else if (hw_point1) | |
6940 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6941 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6942 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6943 | else |
7f32a4d5 PA |
6944 | /* We compare bp_location.length in order to cover ranged |
6945 | breakpoints. Keep this in sync with | |
6946 | bp_location_is_less_than. */ | |
f1310107 TJB |
6947 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
6948 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 6949 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 6950 | && loc1->length == loc2->length); |
2d134ed3 PA |
6951 | } |
6952 | ||
76897487 KB |
6953 | static void |
6954 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
dda83cd7 | 6955 | int bnum, int have_bnum) |
76897487 | 6956 | { |
f63fbe86 MS |
6957 | /* The longest string possibly returned by hex_string_custom |
6958 | is 50 chars. These must be at least that big for safety. */ | |
6959 | char astr1[64]; | |
6960 | char astr2[64]; | |
76897487 | 6961 | |
bb599908 PH |
6962 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6963 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6964 | if (have_bnum) |
8a3fe4f8 | 6965 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 6966 | bnum, astr1, astr2); |
76897487 | 6967 | else |
8a3fe4f8 | 6968 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6969 | } |
6970 | ||
4a64f543 MS |
6971 | /* Adjust a breakpoint's address to account for architectural |
6972 | constraints on breakpoint placement. Return the adjusted address. | |
6973 | Note: Very few targets require this kind of adjustment. For most | |
6974 | targets, this function is simply the identity function. */ | |
76897487 KB |
6975 | |
6976 | static CORE_ADDR | |
a6d9a66e UW |
6977 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6978 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6979 | { |
a0de8c21 YQ |
6980 | if (bptype == bp_watchpoint |
6981 | || bptype == bp_hardware_watchpoint | |
6982 | || bptype == bp_read_watchpoint | |
6983 | || bptype == bp_access_watchpoint | |
6984 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6985 | { |
6986 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 6987 | have their addresses modified. */ |
88f7da05 KB |
6988 | return bpaddr; |
6989 | } | |
7c16b83e PA |
6990 | else if (bptype == bp_single_step) |
6991 | { | |
6992 | /* Single-step breakpoints should not have their addresses | |
6993 | modified. If there's any architectural constrain that | |
6994 | applies to this address, then it should have already been | |
6995 | taken into account when the breakpoint was created in the | |
6996 | first place. If we didn't do this, stepping through e.g., | |
6997 | Thumb-2 IT blocks would break. */ | |
6998 | return bpaddr; | |
6999 | } | |
76897487 KB |
7000 | else |
7001 | { | |
a0de8c21 YQ |
7002 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7003 | ||
7004 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
7005 | { | |
7006 | /* Some targets have architectural constraints on the placement | |
7007 | of breakpoint instructions. Obtain the adjusted address. */ | |
7008 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
7009 | } | |
76897487 | 7010 | |
a0de8c21 | 7011 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
7012 | |
7013 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7014 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7015 | is required. */ |
7016 | if (adjusted_bpaddr != bpaddr) | |
7017 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7018 | ||
7019 | return adjusted_bpaddr; | |
7020 | } | |
7021 | } | |
7022 | ||
cb1e4e32 PA |
7023 | static bp_loc_type |
7024 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7025 | { |
cb1e4e32 | 7026 | switch (type) |
e049a4b5 DJ |
7027 | { |
7028 | case bp_breakpoint: | |
7c16b83e | 7029 | case bp_single_step: |
e049a4b5 DJ |
7030 | case bp_until: |
7031 | case bp_finish: | |
7032 | case bp_longjmp: | |
7033 | case bp_longjmp_resume: | |
e2e4d78b | 7034 | case bp_longjmp_call_dummy: |
186c406b TT |
7035 | case bp_exception: |
7036 | case bp_exception_resume: | |
e049a4b5 | 7037 | case bp_step_resume: |
2c03e5be | 7038 | case bp_hp_step_resume: |
e049a4b5 DJ |
7039 | case bp_watchpoint_scope: |
7040 | case bp_call_dummy: | |
aa7d318d | 7041 | case bp_std_terminate: |
e049a4b5 DJ |
7042 | case bp_shlib_event: |
7043 | case bp_thread_event: | |
7044 | case bp_overlay_event: | |
4efc6507 | 7045 | case bp_jit_event: |
0fd8e87f | 7046 | case bp_longjmp_master: |
aa7d318d | 7047 | case bp_std_terminate_master: |
186c406b | 7048 | case bp_exception_master: |
0e30163f JK |
7049 | case bp_gnu_ifunc_resolver: |
7050 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7051 | case bp_dprintf: |
cb1e4e32 | 7052 | return bp_loc_software_breakpoint; |
e049a4b5 | 7053 | case bp_hardware_breakpoint: |
cb1e4e32 | 7054 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7055 | case bp_hardware_watchpoint: |
7056 | case bp_read_watchpoint: | |
7057 | case bp_access_watchpoint: | |
cb1e4e32 | 7058 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7059 | case bp_watchpoint: |
ce78b96d | 7060 | case bp_catchpoint: |
15c3d785 PA |
7061 | case bp_tracepoint: |
7062 | case bp_fast_tracepoint: | |
0fb4aa4b | 7063 | case bp_static_tracepoint: |
cb1e4e32 | 7064 | return bp_loc_other; |
e049a4b5 | 7065 | default: |
e2e0b3e5 | 7066 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 7067 | } |
cb1e4e32 PA |
7068 | } |
7069 | ||
7070 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7071 | { | |
7072 | this->owner = owner; | |
7073 | this->cond_bytecode = NULL; | |
7074 | this->shlib_disabled = 0; | |
7075 | this->enabled = 1; | |
b5fa468f | 7076 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7077 | |
7078 | this->loc_type = type; | |
e049a4b5 | 7079 | |
cb1e4e32 PA |
7080 | if (this->loc_type == bp_loc_software_breakpoint |
7081 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7082 | mark_breakpoint_location_modified (this); | |
7083 | ||
b6433ede | 7084 | incref (); |
cb1e4e32 PA |
7085 | } |
7086 | ||
7087 | bp_location::bp_location (breakpoint *owner) | |
7088 | : bp_location::bp_location (owner, | |
7089 | bp_location_from_bp_type (owner->type)) | |
7090 | { | |
28010a5d PA |
7091 | } |
7092 | ||
7093 | /* Allocate a struct bp_location. */ | |
7094 | ||
7095 | static struct bp_location * | |
7096 | allocate_bp_location (struct breakpoint *bpt) | |
7097 | { | |
348d480f PA |
7098 | return bpt->ops->allocate_location (bpt); |
7099 | } | |
7cc221ef | 7100 | |
f431efe5 PA |
7101 | /* Decrement reference count. If the reference count reaches 0, |
7102 | destroy the bp_location. Sets *BLP to NULL. */ | |
7103 | ||
7104 | static void | |
7105 | decref_bp_location (struct bp_location **blp) | |
7106 | { | |
b6433ede | 7107 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7108 | *blp = NULL; |
7109 | } | |
7110 | ||
346774a9 | 7111 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7112 | |
b270e6f9 TT |
7113 | static breakpoint * |
7114 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7115 | { |
346774a9 | 7116 | struct breakpoint *b1; |
b270e6f9 | 7117 | struct breakpoint *result = b.get (); |
c906108c | 7118 | |
346774a9 PA |
7119 | /* Add this breakpoint to the end of the chain so that a list of |
7120 | breakpoints will come out in order of increasing numbers. */ | |
7121 | ||
7122 | b1 = breakpoint_chain; | |
7123 | if (b1 == 0) | |
b270e6f9 | 7124 | breakpoint_chain = b.release (); |
346774a9 PA |
7125 | else |
7126 | { | |
7127 | while (b1->next) | |
7128 | b1 = b1->next; | |
b270e6f9 | 7129 | b1->next = b.release (); |
346774a9 | 7130 | } |
b270e6f9 TT |
7131 | |
7132 | return result; | |
346774a9 PA |
7133 | } |
7134 | ||
7135 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7136 | ||
7137 | static void | |
7138 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7139 | struct gdbarch *gdbarch, | |
28010a5d | 7140 | enum bptype bptype, |
c0a91b2b | 7141 | const struct breakpoint_ops *ops) |
346774a9 | 7142 | { |
348d480f PA |
7143 | gdb_assert (ops != NULL); |
7144 | ||
28010a5d | 7145 | b->ops = ops; |
4d28f7a8 | 7146 | b->type = bptype; |
a6d9a66e | 7147 | b->gdbarch = gdbarch; |
c906108c SS |
7148 | b->language = current_language->la_language; |
7149 | b->input_radix = input_radix; | |
d0fb5eae | 7150 | b->related_breakpoint = b; |
346774a9 PA |
7151 | } |
7152 | ||
7153 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7154 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7155 | |
7156 | static struct breakpoint * | |
7157 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7158 | enum bptype bptype, |
c0a91b2b | 7159 | const struct breakpoint_ops *ops) |
346774a9 | 7160 | { |
3b0871f4 | 7161 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7162 | |
3b0871f4 | 7163 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7164 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7165 | } |
7166 | ||
0ba852ab | 7167 | /* Initialize loc->function_name. */ |
0e30163f | 7168 | |
0d381245 | 7169 | static void |
0ba852ab | 7170 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7171 | { |
2bdf28a0 JK |
7172 | gdb_assert (loc->owner != NULL); |
7173 | ||
0d381245 | 7174 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7175 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7176 | || is_tracepoint (loc->owner)) |
0d381245 | 7177 | { |
2c02bd72 | 7178 | const char *function_name; |
0e30163f | 7179 | |
3467ec66 | 7180 | if (loc->msymbol != NULL |
60f62e2b SM |
7181 | && (loc->msymbol->type () == mst_text_gnu_ifunc |
7182 | || loc->msymbol->type () == mst_data_gnu_ifunc)) | |
0e30163f JK |
7183 | { |
7184 | struct breakpoint *b = loc->owner; | |
7185 | ||
c9d95fa3 | 7186 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7187 | |
7188 | if (b->type == bp_breakpoint && b->loc == loc | |
7189 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7190 | { |
7191 | /* Create only the whole new breakpoint of this type but do not | |
7192 | mess more complicated breakpoints with multiple locations. */ | |
7193 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7194 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7195 | breakpoint. */ |
3467ec66 | 7196 | loc->related_address = loc->address; |
0e30163f JK |
7197 | } |
7198 | } | |
3467ec66 PA |
7199 | else |
7200 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7201 | |
2c02bd72 | 7202 | if (function_name) |
23d6ee64 | 7203 | loc->function_name = make_unique_xstrdup (function_name); |
0d381245 VP |
7204 | } |
7205 | } | |
7206 | ||
a6d9a66e | 7207 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7208 | struct gdbarch * |
a6d9a66e UW |
7209 | get_sal_arch (struct symtab_and_line sal) |
7210 | { | |
7211 | if (sal.section) | |
08feed99 | 7212 | return sal.section->objfile->arch (); |
a6d9a66e | 7213 | if (sal.symtab) |
3c86fae3 | 7214 | return sal.symtab->compunit ()->objfile ()->arch (); |
a6d9a66e UW |
7215 | |
7216 | return NULL; | |
7217 | } | |
7218 | ||
346774a9 PA |
7219 | /* Low level routine for partially initializing a breakpoint of type |
7220 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7221 | file name, and line number are provided by SAL. |
0d381245 VP |
7222 | |
7223 | It is expected that the caller will complete the initialization of | |
7224 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7225 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7226 | |
346774a9 PA |
7227 | static void |
7228 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7229 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7230 | const struct breakpoint_ops *ops) |
0d381245 | 7231 | { |
28010a5d | 7232 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7233 | |
3742cc8b | 7234 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7235 | |
6c95b8df PA |
7236 | if (bptype != bp_catchpoint) |
7237 | gdb_assert (sal.pspace != NULL); | |
7238 | ||
f8eba3c6 TT |
7239 | /* Store the program space that was used to set the breakpoint, |
7240 | except for ordinary breakpoints, which are independent of the | |
7241 | program space. */ | |
7242 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7243 | b->pspace = sal.pspace; | |
346774a9 | 7244 | } |
c906108c | 7245 | |
346774a9 PA |
7246 | /* set_raw_breakpoint is a low level routine for allocating and |
7247 | partially initializing a breakpoint of type BPTYPE. The newly | |
7248 | created breakpoint's address, section, source file name, and line | |
7249 | number are provided by SAL. The newly created and partially | |
7250 | initialized breakpoint is added to the breakpoint chain and | |
7251 | is also returned as the value of this function. | |
7252 | ||
7253 | It is expected that the caller will complete the initialization of | |
7254 | the newly created breakpoint struct as well as output any status | |
7255 | information regarding the creation of a new breakpoint. In | |
7256 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7257 | number! Care should be taken to not allow an error to occur | |
7258 | prior to completing the initialization of the breakpoint. If this | |
7259 | should happen, a bogus breakpoint will be left on the chain. */ | |
7260 | ||
cd0f67f3 | 7261 | static struct breakpoint * |
346774a9 | 7262 | set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 7263 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7264 | const struct breakpoint_ops *ops) |
346774a9 | 7265 | { |
3b0871f4 | 7266 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7267 | |
3b0871f4 | 7268 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7269 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7270 | } |
7271 | ||
53a5351d | 7272 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7273 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7274 | initiated the operation. */ | |
c906108c SS |
7275 | |
7276 | void | |
186c406b | 7277 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7278 | { |
5d5658a1 | 7279 | int thread = tp->global_num; |
0fd8e87f UW |
7280 | |
7281 | /* To avoid having to rescan all objfile symbols at every step, | |
7282 | we maintain a list of continually-inserted but always disabled | |
7283 | longjmp "master" breakpoints. Here, we simply create momentary | |
7284 | clones of those and enable them for the requested thread. */ | |
1428b37a | 7285 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df | 7286 | if (b->pspace == current_program_space |
186c406b TT |
7287 | && (b->type == bp_longjmp_master |
7288 | || b->type == bp_exception_master)) | |
0fd8e87f | 7289 | { |
06edf0c0 PA |
7290 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7291 | struct breakpoint *clone; | |
cc59ec59 | 7292 | |
e2e4d78b JK |
7293 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7294 | after their removal. */ | |
06edf0c0 | 7295 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7296 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7297 | clone->thread = thread; |
7298 | } | |
186c406b TT |
7299 | |
7300 | tp->initiating_frame = frame; | |
c906108c SS |
7301 | } |
7302 | ||
611c83ae | 7303 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7304 | void |
611c83ae | 7305 | delete_longjmp_breakpoint (int thread) |
c906108c | 7306 | { |
1428b37a | 7307 | for (breakpoint *b : all_breakpoints_safe ()) |
186c406b | 7308 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7309 | { |
7310 | if (b->thread == thread) | |
7311 | delete_breakpoint (b); | |
7312 | } | |
c906108c SS |
7313 | } |
7314 | ||
f59f708a PA |
7315 | void |
7316 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7317 | { | |
1428b37a | 7318 | for (breakpoint *b : all_breakpoints_safe ()) |
f59f708a PA |
7319 | if (b->type == bp_longjmp || b->type == bp_exception) |
7320 | { | |
7321 | if (b->thread == thread) | |
7322 | b->disposition = disp_del_at_next_stop; | |
7323 | } | |
7324 | } | |
7325 | ||
e2e4d78b JK |
7326 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7327 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7328 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7329 | breakpoints. */ | |
7330 | ||
7331 | struct breakpoint * | |
7332 | set_longjmp_breakpoint_for_call_dummy (void) | |
7333 | { | |
43892fdf | 7334 | breakpoint *retval = nullptr; |
e2e4d78b | 7335 | |
43892fdf | 7336 | for (breakpoint *b : all_breakpoints ()) |
e2e4d78b JK |
7337 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) |
7338 | { | |
7339 | struct breakpoint *new_b; | |
7340 | ||
7341 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7342 | &momentary_breakpoint_ops, |
7343 | 1); | |
00431a78 | 7344 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7345 | |
7346 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7347 | ||
7348 | gdb_assert (new_b->related_breakpoint == new_b); | |
7349 | if (retval == NULL) | |
7350 | retval = new_b; | |
7351 | new_b->related_breakpoint = retval; | |
7352 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7353 | retval = retval->related_breakpoint; | |
7354 | retval->related_breakpoint = new_b; | |
7355 | } | |
7356 | ||
7357 | return retval; | |
7358 | } | |
7359 | ||
7360 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7361 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7362 | stack. |
7363 | ||
b4b3e2de AB |
7364 | If the unwind fails then there is not sufficient information to discard |
7365 | dummy frames. In this case, elide the clean up and the dummy frames will | |
7366 | be cleaned up next time this function is called from a location where | |
7367 | unwinding is possible. */ | |
e2e4d78b JK |
7368 | |
7369 | void | |
b67a2c6f | 7370 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7371 | { |
7372 | struct breakpoint *b, *b_tmp; | |
7373 | ||
7374 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7375 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7376 | { |
7377 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7378 | ||
b4b3e2de AB |
7379 | /* Find the bp_call_dummy breakpoint in the list of breakpoints |
7380 | chained off b->related_breakpoint. */ | |
e2e4d78b JK |
7381 | while (dummy_b != b && dummy_b->type != bp_call_dummy) |
7382 | dummy_b = dummy_b->related_breakpoint; | |
b4b3e2de AB |
7383 | |
7384 | /* If there was no bp_call_dummy breakpoint then there's nothing | |
7385 | more to do. Or, if the dummy frame associated with the | |
7386 | bp_call_dummy is still on the stack then we need to leave this | |
7387 | bp_call_dummy in place. */ | |
e2e4d78b JK |
7388 | if (dummy_b->type != bp_call_dummy |
7389 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7390 | continue; | |
b4b3e2de AB |
7391 | |
7392 | /* We didn't find the dummy frame on the stack, this could be | |
7393 | because we have longjmp'd to a stack frame that is previous to | |
7394 | the dummy frame, or it could be because the stack unwind is | |
7395 | broken at some point between the longjmp frame and the dummy | |
7396 | frame. | |
7397 | ||
7398 | Next we figure out why the stack unwind stopped. If it looks | |
7399 | like the unwind is complete then we assume the dummy frame has | |
7400 | been jumped over, however, if the unwind stopped for an | |
7401 | unexpected reason then we assume the stack unwind is currently | |
7402 | broken, and that we will (eventually) return to the dummy | |
7403 | frame. | |
7404 | ||
7405 | It might be tempting to consider using frame_id_inner here, but | |
7406 | that is not safe. There is no guarantee that the stack frames | |
7407 | we are looking at here are even on the same stack as the | |
7408 | original dummy frame, hence frame_id_inner can't be used. See | |
7409 | the comments on frame_id_inner for more details. */ | |
7410 | bool unwind_finished_unexpectedly = false; | |
7411 | for (struct frame_info *fi = get_current_frame (); fi != nullptr; ) | |
7412 | { | |
7413 | struct frame_info *prev = get_prev_frame (fi); | |
7414 | if (prev == nullptr) | |
7415 | { | |
7416 | /* FI is the last stack frame. Why did this frame not | |
7417 | unwind further? */ | |
7418 | auto stop_reason = get_frame_unwind_stop_reason (fi); | |
7419 | if (stop_reason != UNWIND_NO_REASON | |
7420 | && stop_reason != UNWIND_OUTERMOST) | |
7421 | unwind_finished_unexpectedly = true; | |
7422 | } | |
7423 | fi = prev; | |
7424 | } | |
7425 | if (unwind_finished_unexpectedly) | |
7426 | continue; | |
7427 | ||
00431a78 | 7428 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7429 | |
7430 | while (b->related_breakpoint != b) | |
7431 | { | |
7432 | if (b_tmp == b->related_breakpoint) | |
7433 | b_tmp = b->related_breakpoint->next; | |
7434 | delete_breakpoint (b->related_breakpoint); | |
7435 | } | |
7436 | delete_breakpoint (b); | |
7437 | } | |
7438 | } | |
7439 | ||
1900040c MS |
7440 | void |
7441 | enable_overlay_breakpoints (void) | |
7442 | { | |
43892fdf | 7443 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7444 | if (b->type == bp_overlay_event) |
01add95b SM |
7445 | { |
7446 | b->enable_state = bp_enabled; | |
7447 | update_global_location_list (UGLL_MAY_INSERT); | |
7448 | overlay_events_enabled = 1; | |
7449 | } | |
1900040c MS |
7450 | } |
7451 | ||
7452 | void | |
7453 | disable_overlay_breakpoints (void) | |
7454 | { | |
43892fdf | 7455 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7456 | if (b->type == bp_overlay_event) |
01add95b SM |
7457 | { |
7458 | b->enable_state = bp_disabled; | |
7459 | update_global_location_list (UGLL_DONT_INSERT); | |
7460 | overlay_events_enabled = 0; | |
7461 | } | |
1900040c MS |
7462 | } |
7463 | ||
aa7d318d TT |
7464 | /* Set an active std::terminate breakpoint for each std::terminate |
7465 | master breakpoint. */ | |
7466 | void | |
7467 | set_std_terminate_breakpoint (void) | |
7468 | { | |
1428b37a | 7469 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7470 | if (b->pspace == current_program_space |
7471 | && b->type == bp_std_terminate_master) | |
7472 | { | |
06edf0c0 | 7473 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7474 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7475 | } |
7476 | } | |
7477 | ||
7478 | /* Delete all the std::terminate breakpoints. */ | |
7479 | void | |
7480 | delete_std_terminate_breakpoint (void) | |
7481 | { | |
1428b37a | 7482 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7483 | if (b->type == bp_std_terminate) |
7484 | delete_breakpoint (b); | |
7485 | } | |
7486 | ||
c4093a6a | 7487 | struct breakpoint * |
a6d9a66e | 7488 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7489 | { |
7490 | struct breakpoint *b; | |
c4093a6a | 7491 | |
06edf0c0 PA |
7492 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7493 | &internal_breakpoint_ops); | |
7494 | ||
b5de0fa7 | 7495 | b->enable_state = bp_enabled; |
f00aae0f | 7496 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7497 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7498 | |
44702360 | 7499 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7500 | |
c4093a6a JM |
7501 | return b; |
7502 | } | |
7503 | ||
0101ce28 JJ |
7504 | struct lang_and_radix |
7505 | { | |
7506 | enum language lang; | |
7507 | int radix; | |
7508 | }; | |
7509 | ||
4efc6507 DE |
7510 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7511 | ||
7512 | struct breakpoint * | |
7513 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7514 | { | |
2a7f3dff PA |
7515 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7516 | &internal_breakpoint_ops); | |
4efc6507 | 7517 | } |
0101ce28 | 7518 | |
03673fc7 PP |
7519 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7520 | ||
7521 | void | |
7522 | remove_jit_event_breakpoints (void) | |
7523 | { | |
1428b37a | 7524 | for (breakpoint *b : all_breakpoints_safe ()) |
03673fc7 PP |
7525 | if (b->type == bp_jit_event |
7526 | && b->loc->pspace == current_program_space) | |
7527 | delete_breakpoint (b); | |
7528 | } | |
7529 | ||
cae688ec JJ |
7530 | void |
7531 | remove_solib_event_breakpoints (void) | |
7532 | { | |
1428b37a | 7533 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df PA |
7534 | if (b->type == bp_shlib_event |
7535 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7536 | delete_breakpoint (b); |
7537 | } | |
7538 | ||
f37f681c PA |
7539 | /* See breakpoint.h. */ |
7540 | ||
7541 | void | |
7542 | remove_solib_event_breakpoints_at_next_stop (void) | |
7543 | { | |
1428b37a | 7544 | for (breakpoint *b : all_breakpoints_safe ()) |
f37f681c PA |
7545 | if (b->type == bp_shlib_event |
7546 | && b->loc->pspace == current_program_space) | |
7547 | b->disposition = disp_del_at_next_stop; | |
7548 | } | |
7549 | ||
04086b45 PA |
7550 | /* Helper for create_solib_event_breakpoint / |
7551 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7552 | INSERT_MODE to pass through to update_global_location_list. */ | |
7553 | ||
7554 | static struct breakpoint * | |
7555 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7556 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7557 | { |
7558 | struct breakpoint *b; | |
7559 | ||
06edf0c0 PA |
7560 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7561 | &internal_breakpoint_ops); | |
04086b45 | 7562 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7563 | return b; |
7564 | } | |
7565 | ||
04086b45 PA |
7566 | struct breakpoint * |
7567 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7568 | { | |
7569 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7570 | } | |
7571 | ||
f37f681c PA |
7572 | /* See breakpoint.h. */ |
7573 | ||
7574 | struct breakpoint * | |
7575 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7576 | { | |
7577 | struct breakpoint *b; | |
7578 | ||
04086b45 PA |
7579 | /* Explicitly tell update_global_location_list to insert |
7580 | locations. */ | |
7581 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7582 | if (!b->loc->inserted) |
7583 | { | |
7584 | delete_breakpoint (b); | |
7585 | return NULL; | |
7586 | } | |
7587 | return b; | |
7588 | } | |
7589 | ||
cae688ec JJ |
7590 | /* Disable any breakpoints that are on code in shared libraries. Only |
7591 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7592 | ||
7593 | void | |
cb851954 | 7594 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7595 | { |
48d7020b | 7596 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7597 | { |
7598 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7599 | struct breakpoint *b = loc->owner; | |
7600 | ||
7601 | /* We apply the check to all breakpoints, including disabled for | |
7602 | those with loc->duplicate set. This is so that when breakpoint | |
7603 | becomes enabled, or the duplicate is removed, gdb will try to | |
7604 | insert all breakpoints. If we don't set shlib_disabled here, | |
7605 | we'll try to insert those breakpoints and fail. */ | |
7606 | if (((b->type == bp_breakpoint) | |
7607 | || (b->type == bp_jit_event) | |
7608 | || (b->type == bp_hardware_breakpoint) | |
7609 | || (is_tracepoint (b))) | |
7610 | && loc->pspace == current_program_space | |
7611 | && !loc->shlib_disabled | |
7612 | && solib_name_from_address (loc->pspace, loc->address) | |
7613 | ) | |
7614 | { | |
7615 | loc->shlib_disabled = 1; | |
7616 | } | |
7617 | } | |
cae688ec JJ |
7618 | } |
7619 | ||
63644780 NB |
7620 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7621 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7622 | disabled ones can just stay disabled. */ | |
84acb35a | 7623 | |
75149521 | 7624 | static void |
84acb35a JJ |
7625 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7626 | { | |
84acb35a JJ |
7627 | int disabled_shlib_breaks = 0; |
7628 | ||
48d7020b | 7629 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7630 | { |
7631 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7632 | struct breakpoint *b = loc->owner; | |
7633 | ||
7634 | if (solib->pspace == loc->pspace | |
7635 | && !loc->shlib_disabled | |
7636 | && (((b->type == bp_breakpoint | |
7637 | || b->type == bp_jit_event | |
7638 | || b->type == bp_hardware_breakpoint) | |
7639 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7640 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7641 | || is_tracepoint (b)) | |
7642 | && solib_contains_address_p (solib, loc->address)) | |
7643 | { | |
7644 | loc->shlib_disabled = 1; | |
7645 | /* At this point, we cannot rely on remove_breakpoint | |
7646 | succeeding so we must mark the breakpoint as not inserted | |
7647 | to prevent future errors occurring in remove_breakpoints. */ | |
7648 | loc->inserted = 0; | |
7649 | ||
7650 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7651 | gdb::observers::breakpoint_modified.notify (b); | |
7652 | ||
7653 | if (!disabled_shlib_breaks) | |
7654 | { | |
7655 | target_terminal::ours_for_output (); | |
7656 | warning (_("Temporarily disabling breakpoints " | |
7657 | "for unloaded shared library \"%s\""), | |
7658 | solib->so_name); | |
7659 | } | |
7660 | disabled_shlib_breaks = 1; | |
7661 | } | |
7662 | } | |
84acb35a JJ |
7663 | } |
7664 | ||
63644780 NB |
7665 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7666 | notification of free_objfile. Only apply to enabled breakpoints, | |
7667 | disabled ones can just stay disabled. */ | |
7668 | ||
7669 | static void | |
7670 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7671 | { | |
63644780 NB |
7672 | if (objfile == NULL) |
7673 | return; | |
7674 | ||
d03de421 PA |
7675 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7676 | managed by the user with add-symbol-file/remove-symbol-file. | |
7677 | Similarly to how breakpoints in shared libraries are handled in | |
7678 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7679 | shlib_disabled so they end up uninserted on the next global |
7680 | location list update. Shared libraries not loaded by the user | |
7681 | aren't handled here -- they're already handled in | |
7682 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7683 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7684 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7685 | main objfile). */ | |
7686 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7687 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7688 | return; |
7689 | ||
43892fdf | 7690 | for (breakpoint *b : all_breakpoints ()) |
63644780 | 7691 | { |
63644780 NB |
7692 | int bp_modified = 0; |
7693 | ||
7694 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7695 | continue; | |
7696 | ||
40cb8ca5 | 7697 | for (bp_location *loc : b->locations ()) |
63644780 NB |
7698 | { |
7699 | CORE_ADDR loc_addr = loc->address; | |
7700 | ||
7701 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7702 | && loc->loc_type != bp_loc_software_breakpoint) | |
7703 | continue; | |
7704 | ||
7705 | if (loc->shlib_disabled != 0) | |
7706 | continue; | |
7707 | ||
7708 | if (objfile->pspace != loc->pspace) | |
7709 | continue; | |
7710 | ||
7711 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7712 | && loc->loc_type != bp_loc_software_breakpoint) | |
7713 | continue; | |
7714 | ||
7715 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7716 | { | |
7717 | loc->shlib_disabled = 1; | |
08351840 PA |
7718 | /* At this point, we don't know whether the object was |
7719 | unmapped from the inferior or not, so leave the | |
7720 | inserted flag alone. We'll handle failure to | |
7721 | uninsert quietly, in case the object was indeed | |
7722 | unmapped. */ | |
63644780 NB |
7723 | |
7724 | mark_breakpoint_location_modified (loc); | |
7725 | ||
7726 | bp_modified = 1; | |
7727 | } | |
7728 | } | |
7729 | ||
7730 | if (bp_modified) | |
76727919 | 7731 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7732 | } |
7733 | } | |
7734 | ||
b650a282 | 7735 | /* See breakpoint.h. */ |
ce78b96d | 7736 | |
ab04a2af | 7737 | void |
346774a9 | 7738 | init_catchpoint (struct breakpoint *b, |
b650a282 | 7739 | struct gdbarch *gdbarch, bool temp, |
63160a43 | 7740 | const char *cond_string, |
c0a91b2b | 7741 | const struct breakpoint_ops *ops) |
c906108c | 7742 | { |
51abb421 | 7743 | symtab_and_line sal; |
6c95b8df | 7744 | sal.pspace = current_program_space; |
c5aa993b | 7745 | |
28010a5d | 7746 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 7747 | |
6f781ee3 TT |
7748 | if (cond_string == nullptr) |
7749 | b->cond_string.reset (); | |
7750 | else | |
7751 | b->cond_string = make_unique_xstrdup (cond_string); | |
b650a282 | 7752 | b->disposition = temp ? disp_del : disp_donttouch; |
346774a9 PA |
7753 | } |
7754 | ||
28010a5d | 7755 | void |
b270e6f9 | 7756 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 7757 | { |
b270e6f9 | 7758 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 7759 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
7760 | if (is_tracepoint (b)) |
7761 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
7762 | if (!internal) |
7763 | mention (b); | |
76727919 | 7764 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
7765 | |
7766 | if (update_gll) | |
44702360 | 7767 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
7768 | } |
7769 | ||
c906108c | 7770 | static int |
fba45db2 | 7771 | hw_breakpoint_used_count (void) |
c906108c | 7772 | { |
c906108c SS |
7773 | int i = 0; |
7774 | ||
43892fdf | 7775 | for (breakpoint *b : all_breakpoints ()) |
d6b74ac4 | 7776 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
40cb8ca5 | 7777 | for (bp_location *bl : b->locations ()) |
f1310107 TJB |
7778 | { |
7779 | /* Special types of hardware breakpoints may use more than | |
7780 | one register. */ | |
348d480f | 7781 | i += b->ops->resources_needed (bl); |
f1310107 | 7782 | } |
c906108c SS |
7783 | |
7784 | return i; | |
7785 | } | |
7786 | ||
a1398e0c PA |
7787 | /* Returns the resources B would use if it were a hardware |
7788 | watchpoint. */ | |
7789 | ||
c906108c | 7790 | static int |
a1398e0c | 7791 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 7792 | { |
c906108c SS |
7793 | int i = 0; |
7794 | ||
a1398e0c PA |
7795 | if (!breakpoint_enabled (b)) |
7796 | return 0; | |
7797 | ||
40cb8ca5 | 7798 | for (bp_location *bl : b->locations ()) |
a1398e0c PA |
7799 | { |
7800 | /* Special types of hardware watchpoints may use more than | |
7801 | one register. */ | |
7802 | i += b->ops->resources_needed (bl); | |
7803 | } | |
7804 | ||
7805 | return i; | |
7806 | } | |
7807 | ||
7808 | /* Returns the sum the used resources of all hardware watchpoints of | |
7809 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
7810 | the sum of the used resources of all hardware watchpoints of other | |
7811 | types _not_ TYPE. */ | |
7812 | ||
7813 | static int | |
7814 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
7815 | enum bptype type, int *other_type_used) | |
7816 | { | |
7817 | int i = 0; | |
a1398e0c | 7818 | |
c906108c | 7819 | *other_type_used = 0; |
43892fdf | 7820 | for (breakpoint *b : all_breakpoints ()) |
e09342b5 | 7821 | { |
a1398e0c PA |
7822 | if (b == except) |
7823 | continue; | |
e09342b5 TJB |
7824 | if (!breakpoint_enabled (b)) |
7825 | continue; | |
7826 | ||
a1398e0c PA |
7827 | if (b->type == type) |
7828 | i += hw_watchpoint_use_count (b); | |
7829 | else if (is_hardware_watchpoint (b)) | |
7830 | *other_type_used = 1; | |
e09342b5 TJB |
7831 | } |
7832 | ||
c906108c SS |
7833 | return i; |
7834 | } | |
7835 | ||
c906108c | 7836 | void |
fba45db2 | 7837 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 7838 | { |
43892fdf | 7839 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 7840 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 7841 | { |
b5de0fa7 | 7842 | b->enable_state = bp_call_disabled; |
44702360 | 7843 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b | 7844 | } |
c906108c SS |
7845 | } |
7846 | ||
7847 | void | |
fba45db2 | 7848 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 7849 | { |
43892fdf | 7850 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 7851 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 7852 | { |
b5de0fa7 | 7853 | b->enable_state = bp_enabled; |
44702360 | 7854 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b | 7855 | } |
c906108c SS |
7856 | } |
7857 | ||
8bea4e01 UW |
7858 | void |
7859 | disable_breakpoints_before_startup (void) | |
7860 | { | |
6c95b8df | 7861 | current_program_space->executing_startup = 1; |
44702360 | 7862 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
7863 | } |
7864 | ||
7865 | void | |
7866 | enable_breakpoints_after_startup (void) | |
7867 | { | |
6c95b8df | 7868 | current_program_space->executing_startup = 0; |
f8eba3c6 | 7869 | breakpoint_re_set (); |
8bea4e01 UW |
7870 | } |
7871 | ||
7c16b83e PA |
7872 | /* Create a new single-step breakpoint for thread THREAD, with no |
7873 | locations. */ | |
c906108c | 7874 | |
7c16b83e PA |
7875 | static struct breakpoint * |
7876 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
7877 | { | |
b270e6f9 | 7878 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 7879 | |
b270e6f9 | 7880 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
7881 | &momentary_breakpoint_ops); |
7882 | ||
7883 | b->disposition = disp_donttouch; | |
7884 | b->frame_id = null_frame_id; | |
7885 | ||
7886 | b->thread = thread; | |
7887 | gdb_assert (b->thread != 0); | |
7888 | ||
b270e6f9 | 7889 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
7890 | } |
7891 | ||
7892 | /* Set a momentary breakpoint of type TYPE at address specified by | |
7893 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
7894 | frame. */ | |
c906108c | 7895 | |
454dafbd | 7896 | breakpoint_up |
a6d9a66e UW |
7897 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
7898 | struct frame_id frame_id, enum bptype type) | |
c906108c | 7899 | { |
52f0bd74 | 7900 | struct breakpoint *b; |
edb3359d | 7901 | |
193facb3 JK |
7902 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
7903 | tail-called one. */ | |
7904 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 7905 | |
06edf0c0 | 7906 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
7907 | b->enable_state = bp_enabled; |
7908 | b->disposition = disp_donttouch; | |
818dd999 | 7909 | b->frame_id = frame_id; |
c906108c | 7910 | |
00431a78 | 7911 | b->thread = inferior_thread ()->global_num; |
c906108c | 7912 | |
44702360 | 7913 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7914 | |
454dafbd | 7915 | return breakpoint_up (b); |
c906108c | 7916 | } |
611c83ae | 7917 | |
06edf0c0 | 7918 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
7919 | The new breakpoint will have type TYPE, use OPS as its |
7920 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 7921 | |
06edf0c0 PA |
7922 | static struct breakpoint * |
7923 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
7924 | enum bptype type, | |
a1aa2221 LM |
7925 | const struct breakpoint_ops *ops, |
7926 | int loc_enabled) | |
e58b0e63 PA |
7927 | { |
7928 | struct breakpoint *copy; | |
7929 | ||
06edf0c0 | 7930 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 7931 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 7932 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 7933 | |
a6d9a66e | 7934 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
7935 | copy->loc->requested_address = orig->loc->requested_address; |
7936 | copy->loc->address = orig->loc->address; | |
7937 | copy->loc->section = orig->loc->section; | |
6c95b8df | 7938 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 7939 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 7940 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 7941 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 7942 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
7943 | copy->frame_id = orig->frame_id; |
7944 | copy->thread = orig->thread; | |
6c95b8df | 7945 | copy->pspace = orig->pspace; |
e58b0e63 PA |
7946 | |
7947 | copy->enable_state = bp_enabled; | |
7948 | copy->disposition = disp_donttouch; | |
7949 | copy->number = internal_breakpoint_number--; | |
7950 | ||
44702360 | 7951 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
7952 | return copy; |
7953 | } | |
7954 | ||
06edf0c0 PA |
7955 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
7956 | ORIG is NULL. */ | |
7957 | ||
7958 | struct breakpoint * | |
7959 | clone_momentary_breakpoint (struct breakpoint *orig) | |
7960 | { | |
7961 | /* If there's nothing to clone, then return nothing. */ | |
7962 | if (orig == NULL) | |
7963 | return NULL; | |
7964 | ||
16922ea6 | 7965 | gdb_assert (orig->ops == &momentary_breakpoint_ops); |
a1aa2221 | 7966 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
7967 | } |
7968 | ||
454dafbd | 7969 | breakpoint_up |
a6d9a66e UW |
7970 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
7971 | enum bptype type) | |
611c83ae PA |
7972 | { |
7973 | struct symtab_and_line sal; | |
7974 | ||
7975 | sal = find_pc_line (pc, 0); | |
7976 | sal.pc = pc; | |
7977 | sal.section = find_pc_overlay (pc); | |
7978 | sal.explicit_pc = 1; | |
7979 | ||
a6d9a66e | 7980 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 7981 | } |
c906108c | 7982 | \f |
c5aa993b | 7983 | |
c906108c SS |
7984 | /* Tell the user we have just set a breakpoint B. */ |
7985 | ||
7986 | static void | |
fba45db2 | 7987 | mention (struct breakpoint *b) |
c906108c | 7988 | { |
348d480f | 7989 | b->ops->print_mention (b); |
2d33446d | 7990 | current_uiout->text ("\n"); |
c906108c | 7991 | } |
c906108c | 7992 | \f |
c5aa993b | 7993 | |
5133a315 | 7994 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 7995 | |
7f32a4d5 PA |
7996 | /* Handle "set breakpoint auto-hw on". |
7997 | ||
7998 | If the explicitly specified breakpoint type is not hardware | |
7999 | breakpoint, check the memory map to see whether the breakpoint | |
8000 | address is in read-only memory. | |
8001 | ||
8002 | - location type is not hardware breakpoint, memory is read-only. | |
8003 | We change the type of the location to hardware breakpoint. | |
8004 | ||
8005 | - location type is hardware breakpoint, memory is read-write. This | |
8006 | means we've previously made the location hardware one, but then the | |
8007 | memory map changed, so we undo. | |
8008 | */ | |
8009 | ||
8010 | static void | |
8011 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8012 | { | |
8013 | if (automatic_hardware_breakpoints | |
8014 | && bl->owner->type != bp_hardware_breakpoint | |
8015 | && (bl->loc_type == bp_loc_software_breakpoint | |
8016 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8017 | { | |
8018 | /* When breakpoints are removed, remove_breakpoints will use | |
8019 | location types we've just set here, the only possible problem | |
8020 | is that memory map has changed during running program, but | |
8021 | it's not going to work anyway with current gdb. */ | |
8022 | mem_region *mr = lookup_mem_region (bl->address); | |
8023 | ||
8024 | if (mr != nullptr) | |
8025 | { | |
8026 | enum bp_loc_type new_type; | |
8027 | ||
8028 | if (mr->attrib.mode != MEM_RW) | |
8029 | new_type = bp_loc_hardware_breakpoint; | |
8030 | else | |
8031 | new_type = bp_loc_software_breakpoint; | |
8032 | ||
8033 | if (new_type != bl->loc_type) | |
8034 | { | |
8035 | static bool said = false; | |
8036 | ||
8037 | bl->loc_type = new_type; | |
8038 | if (!said) | |
8039 | { | |
6cb06a8c TT |
8040 | gdb_printf (_("Note: automatically using " |
8041 | "hardware breakpoints for " | |
8042 | "read-only addresses.\n")); | |
7f32a4d5 PA |
8043 | said = true; |
8044 | } | |
8045 | } | |
8046 | } | |
8047 | } | |
8048 | } | |
8049 | ||
0d381245 | 8050 | static struct bp_location * |
39d61571 | 8051 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8052 | const struct symtab_and_line *sal) |
8053 | { | |
8054 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8055 | CORE_ADDR adjusted_address; |
8056 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8057 | ||
8058 | if (loc_gdbarch == NULL) | |
8059 | loc_gdbarch = b->gdbarch; | |
8060 | ||
8061 | /* Adjust the breakpoint's address prior to allocating a location. | |
8062 | Once we call allocate_bp_location(), that mostly uninitialized | |
8063 | location will be placed on the location chain. Adjustment of the | |
8064 | breakpoint may cause target_read_memory() to be called and we do | |
8065 | not want its scan of the location chain to find a breakpoint and | |
8066 | location that's only been partially initialized. */ | |
8067 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8068 | sal->pc, b->type); | |
0d381245 | 8069 | |
d30113d4 | 8070 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8071 | loc = allocate_bp_location (b); |
d30113d4 JK |
8072 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8073 | tmp = &((*tmp)->next)) | |
0d381245 | 8074 | ; |
d30113d4 | 8075 | loc->next = *tmp; |
0d381245 | 8076 | *tmp = loc; |
3742cc8b | 8077 | |
0d381245 | 8078 | loc->requested_address = sal->pc; |
3742cc8b | 8079 | loc->address = adjusted_address; |
6c95b8df | 8080 | loc->pspace = sal->pspace; |
935676c9 | 8081 | loc->probe.prob = sal->prob; |
729662a5 | 8082 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8083 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8084 | loc->section = sal->section; |
3742cc8b | 8085 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8086 | loc->line_number = sal->line; |
2f202fde | 8087 | loc->symtab = sal->symtab; |
4a27f119 | 8088 | loc->symbol = sal->symbol; |
3467ec66 PA |
8089 | loc->msymbol = sal->msymbol; |
8090 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8091 | |
0ba852ab | 8092 | set_breakpoint_location_function (loc); |
1a853c52 | 8093 | |
6ae88661 LM |
8094 | /* While by definition, permanent breakpoints are already present in the |
8095 | code, we don't mark the location as inserted. Normally one would expect | |
8096 | that GDB could rely on that breakpoint instruction to stop the program, | |
8097 | thus removing the need to insert its own breakpoint, except that executing | |
8098 | the breakpoint instruction can kill the target instead of reporting a | |
8099 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8100 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8101 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8102 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8103 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8104 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8105 | it manually increments the PC, thus avoiding executing the breakpoint | |
8106 | instruction.) */ | |
1a853c52 | 8107 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8108 | loc->permanent = 1; |
1a853c52 | 8109 | |
0d381245 VP |
8110 | return loc; |
8111 | } | |
514f746b AR |
8112 | \f |
8113 | ||
5133a315 LM |
8114 | /* Return true if LOC is pointing to a permanent breakpoint, |
8115 | return false otherwise. */ | |
1cf4d951 | 8116 | |
5133a315 | 8117 | static bool |
1cf4d951 PA |
8118 | bp_loc_is_permanent (struct bp_location *loc) |
8119 | { | |
514f746b AR |
8120 | gdb_assert (loc != NULL); |
8121 | ||
cb1e4e32 PA |
8122 | /* If we have a non-breakpoint-backed catchpoint or a software |
8123 | watchpoint, just return 0. We should not attempt to read from | |
8124 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8125 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8126 | memory. */ |
cb1e4e32 | 8127 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8128 | return false; |
244558af | 8129 | |
5ed8105e | 8130 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8131 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8132 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8133 | } |
8134 | ||
e7e0cddf SS |
8135 | /* Build a command list for the dprintf corresponding to the current |
8136 | settings of the dprintf style options. */ | |
8137 | ||
8138 | static void | |
8139 | update_dprintf_command_list (struct breakpoint *b) | |
8140 | { | |
6f781ee3 | 8141 | const char *dprintf_args = b->extra_string.get (); |
8579fd13 | 8142 | gdb::unique_xmalloc_ptr<char> printf_line = nullptr; |
e7e0cddf SS |
8143 | |
8144 | if (!dprintf_args) | |
8145 | return; | |
8146 | ||
8147 | dprintf_args = skip_spaces (dprintf_args); | |
8148 | ||
8149 | /* Allow a comma, as it may have terminated a location, but don't | |
8150 | insist on it. */ | |
8151 | if (*dprintf_args == ',') | |
8152 | ++dprintf_args; | |
8153 | dprintf_args = skip_spaces (dprintf_args); | |
8154 | ||
8155 | if (*dprintf_args != '"') | |
8156 | error (_("Bad format string, missing '\"'.")); | |
8157 | ||
d3ce09f5 | 8158 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8159 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8160 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf | 8161 | { |
e0700ba4 | 8162 | if (dprintf_function.empty ()) |
e7e0cddf SS |
8163 | error (_("No function supplied for dprintf call")); |
8164 | ||
e0700ba4 | 8165 | if (!dprintf_channel.empty ()) |
e7e0cddf | 8166 | printf_line = xstrprintf ("call (void) %s (%s,%s)", |
e0700ba4 SM |
8167 | dprintf_function.c_str (), |
8168 | dprintf_channel.c_str (), | |
e7e0cddf SS |
8169 | dprintf_args); |
8170 | else | |
8171 | printf_line = xstrprintf ("call (void) %s (%s)", | |
e0700ba4 | 8172 | dprintf_function.c_str (), |
e7e0cddf SS |
8173 | dprintf_args); |
8174 | } | |
d3ce09f5 SS |
8175 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8176 | { | |
8177 | if (target_can_run_breakpoint_commands ()) | |
8178 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8179 | else | |
8180 | { | |
8181 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8182 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8183 | } | |
8184 | } | |
e7e0cddf SS |
8185 | else |
8186 | internal_error (__FILE__, __LINE__, | |
8187 | _("Invalid dprintf style.")); | |
8188 | ||
f28045c2 | 8189 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8190 | |
12973681 TT |
8191 | /* Manufacture a printf sequence. */ |
8192 | struct command_line *printf_cmd_line | |
8579fd13 | 8193 | = new struct command_line (simple_control, printf_line.release ()); |
12973681 TT |
8194 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, |
8195 | command_lines_deleter ())); | |
e7e0cddf SS |
8196 | } |
8197 | ||
8198 | /* Update all dprintf commands, making their command lists reflect | |
8199 | current style settings. */ | |
8200 | ||
8201 | static void | |
eb4c3f4a | 8202 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8203 | struct cmd_list_element *c) |
8204 | { | |
43892fdf SM |
8205 | for (breakpoint *b : all_breakpoints ()) |
8206 | if (b->type == bp_dprintf) | |
e7e0cddf | 8207 | update_dprintf_command_list (b); |
e7e0cddf | 8208 | } |
c3f6f71d | 8209 | |
f00aae0f KS |
8210 | /* Create a breakpoint with SAL as location. Use LOCATION |
8211 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8212 | as condition expression. If LOCATION is NULL then create an |
8213 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8214 | |
8215 | static void | |
d9b3f62e | 8216 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8217 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8218 | event_location_up &&location, |
e1e01040 PA |
8219 | gdb::unique_xmalloc_ptr<char> filter, |
8220 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8221 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8222 | enum bptype type, enum bpdisp disposition, |
8223 | int thread, int task, int ignore_count, | |
c0a91b2b | 8224 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8225 | int enabled, int internal, unsigned flags, |
8226 | int display_canonical) | |
018d34a4 | 8227 | { |
0d381245 | 8228 | int i; |
018d34a4 VP |
8229 | |
8230 | if (type == bp_hardware_breakpoint) | |
8231 | { | |
fbbd034e AS |
8232 | int target_resources_ok; |
8233 | ||
8234 | i = hw_breakpoint_used_count (); | |
8235 | target_resources_ok = | |
8236 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8237 | i + 1, 0); |
8238 | if (target_resources_ok == 0) | |
8239 | error (_("No hardware breakpoint support in the target.")); | |
8240 | else if (target_resources_ok < 0) | |
8241 | error (_("Hardware breakpoints used exceeds limit.")); | |
8242 | } | |
8243 | ||
6c5b2ebe | 8244 | gdb_assert (!sals.empty ()); |
6c95b8df | 8245 | |
6c5b2ebe | 8246 | for (const auto &sal : sals) |
0d381245 | 8247 | { |
0d381245 VP |
8248 | struct bp_location *loc; |
8249 | ||
8250 | if (from_tty) | |
5af949e3 UW |
8251 | { |
8252 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8253 | if (!loc_gdbarch) | |
8254 | loc_gdbarch = gdbarch; | |
8255 | ||
8256 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8257 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8258 | } |
0d381245 | 8259 | |
6c5b2ebe | 8260 | if (&sal == &sals[0]) |
0d381245 | 8261 | { |
d9b3f62e | 8262 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8263 | b->thread = thread; |
4a306c9a | 8264 | b->task = task; |
855a6e68 | 8265 | |
6f781ee3 TT |
8266 | b->cond_string = std::move (cond_string); |
8267 | b->extra_string = std::move (extra_string); | |
0d381245 | 8268 | b->ignore_count = ignore_count; |
41447f92 | 8269 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8270 | b->disposition = disposition; |
6c95b8df | 8271 | |
44f238bb PA |
8272 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8273 | b->loc->inserted = 1; | |
8274 | ||
0fb4aa4b PA |
8275 | if (type == bp_static_tracepoint) |
8276 | { | |
d9b3f62e | 8277 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8278 | struct static_tracepoint_marker marker; |
8279 | ||
983af33b | 8280 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8281 | { |
8282 | /* We already know the marker exists, otherwise, we | |
8283 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8284 | const char *p |
8285 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8286 | const char *endp; |
0fb4aa4b | 8287 | |
f1735a53 | 8288 | p = skip_spaces (p); |
0fb4aa4b | 8289 | |
f1735a53 | 8290 | endp = skip_to_space (p); |
0fb4aa4b | 8291 | |
5d9310c4 | 8292 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8293 | |
6cb06a8c TT |
8294 | gdb_printf (_("Probed static tracepoint " |
8295 | "marker \"%s\"\n"), | |
8296 | t->static_trace_marker_id.c_str ()); | |
0fb4aa4b PA |
8297 | } |
8298 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8299 | { | |
5d9310c4 | 8300 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8301 | |
6cb06a8c TT |
8302 | gdb_printf (_("Probed static tracepoint " |
8303 | "marker \"%s\"\n"), | |
8304 | t->static_trace_marker_id.c_str ()); | |
0fb4aa4b PA |
8305 | } |
8306 | else | |
3e43a32a MS |
8307 | warning (_("Couldn't determine the static " |
8308 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8309 | } |
8310 | ||
0d381245 VP |
8311 | loc = b->loc; |
8312 | } | |
8313 | else | |
018d34a4 | 8314 | { |
39d61571 | 8315 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8316 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8317 | loc->inserted = 1; | |
0d381245 VP |
8318 | } |
8319 | ||
b5fa468f TBA |
8320 | /* Do not set breakpoint locations conditions yet. As locations |
8321 | are inserted, they get sorted based on their addresses. Let | |
8322 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8323 | |
8324 | /* Dynamic printf requires and uses additional arguments on the | |
8325 | command line, otherwise it's an error. */ | |
8326 | if (type == bp_dprintf) | |
8327 | { | |
8328 | if (b->extra_string) | |
8329 | update_dprintf_command_list (b); | |
8330 | else | |
8331 | error (_("Format string required")); | |
8332 | } | |
8333 | else if (b->extra_string) | |
6f781ee3 | 8334 | error (_("Garbage '%s' at end of command"), b->extra_string.get ()); |
855a6e68 | 8335 | } |
018d34a4 | 8336 | |
b5fa468f TBA |
8337 | |
8338 | /* The order of the locations is now stable. Set the location | |
8339 | condition using the location's number. */ | |
8340 | int loc_num = 1; | |
40cb8ca5 | 8341 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
8342 | { |
8343 | if (b->cond_string != nullptr) | |
6f781ee3 TT |
8344 | set_breakpoint_location_condition (b->cond_string.get (), loc, |
8345 | b->number, loc_num); | |
b5fa468f TBA |
8346 | |
8347 | ++loc_num; | |
8348 | } | |
8349 | ||
56435ebe | 8350 | b->display_canonical = display_canonical; |
f00aae0f | 8351 | if (location != NULL) |
d28cd78a | 8352 | b->location = std::move (location); |
018d34a4 | 8353 | else |
d28cd78a | 8354 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8355 | b->filter = std::move (filter); |
d9b3f62e | 8356 | } |
018d34a4 | 8357 | |
d9b3f62e PA |
8358 | static void |
8359 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8360 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8361 | event_location_up &&location, |
e1e01040 PA |
8362 | gdb::unique_xmalloc_ptr<char> filter, |
8363 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8364 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8365 | enum bptype type, enum bpdisp disposition, |
8366 | int thread, int task, int ignore_count, | |
c0a91b2b | 8367 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8368 | int enabled, int internal, unsigned flags, |
8369 | int display_canonical) | |
d9b3f62e | 8370 | { |
a5e364af | 8371 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8372 | |
a5e364af | 8373 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8374 | sals, std::move (location), |
e1e01040 PA |
8375 | std::move (filter), |
8376 | std::move (cond_string), | |
8377 | std::move (extra_string), | |
d9b3f62e PA |
8378 | type, disposition, |
8379 | thread, task, ignore_count, | |
8380 | ops, from_tty, | |
44f238bb PA |
8381 | enabled, internal, flags, |
8382 | display_canonical); | |
d9b3f62e | 8383 | |
b270e6f9 | 8384 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8385 | } |
8386 | ||
8387 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8388 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8389 | value. COND_STRING, if not NULL, specified the condition to be | |
8390 | used for all breakpoints. Essentially the only case where | |
8391 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8392 | function. In that case, it's still not possible to specify | |
8393 | separate conditions for different overloaded functions, so | |
8394 | we take just a single condition string. | |
8395 | ||
c3f6f71d | 8396 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8397 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8398 | array contents). If the function fails (error() is called), the |
8399 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8400 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8401 | |
8402 | static void | |
8cdf0e15 | 8403 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8404 | struct linespec_result *canonical, |
e1e01040 PA |
8405 | gdb::unique_xmalloc_ptr<char> cond_string, |
8406 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8407 | enum bptype type, enum bpdisp disposition, |
8408 | int thread, int task, int ignore_count, | |
c0a91b2b | 8409 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8410 | int enabled, int internal, unsigned flags) |
c906108c | 8411 | { |
f8eba3c6 | 8412 | if (canonical->pre_expanded) |
6c5b2ebe | 8413 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8414 | |
6c5b2ebe | 8415 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8416 | { |
f00aae0f | 8417 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8418 | 'break', without arguments. */ |
ffc2605c | 8419 | event_location_up location |
f00aae0f | 8420 | = (canonical->location != NULL |
8e9e35b1 | 8421 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8422 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8423 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8424 | |
6c5b2ebe | 8425 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8426 | std::move (location), |
e1e01040 PA |
8427 | std::move (filter_string), |
8428 | std::move (cond_string), | |
8429 | std::move (extra_string), | |
e7e0cddf | 8430 | type, disposition, |
84f4c1fe | 8431 | thread, task, ignore_count, ops, |
44f238bb | 8432 | from_tty, enabled, internal, flags, |
56435ebe | 8433 | canonical->special_display); |
c3f6f71d | 8434 | } |
c3f6f71d | 8435 | } |
c906108c | 8436 | |
f00aae0f | 8437 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8438 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8439 | addresses found. LOCATION points to the end of the SAL (for |
8440 | linespec locations). | |
9998af43 TJB |
8441 | |
8442 | The array and the line spec strings are allocated on the heap, it is | |
8443 | the caller's responsibility to free them. */ | |
c906108c | 8444 | |
b9362cc7 | 8445 | static void |
626d2320 | 8446 | parse_breakpoint_sals (struct event_location *location, |
58438ac1 | 8447 | struct linespec_result *canonical) |
c3f6f71d | 8448 | { |
f00aae0f KS |
8449 | struct symtab_and_line cursal; |
8450 | ||
8451 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8452 | { | |
a20714ff | 8453 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8454 | |
a20714ff | 8455 | if (spec == NULL) |
f00aae0f KS |
8456 | { |
8457 | /* The last displayed codepoint, if it's valid, is our default | |
8458 | breakpoint address. */ | |
8459 | if (last_displayed_sal_is_valid ()) | |
8460 | { | |
f00aae0f KS |
8461 | /* Set sal's pspace, pc, symtab, and line to the values |
8462 | corresponding to the last call to print_frame_info. | |
8463 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8464 | as the breakpoint line number is inappropriate otherwise. | |
8465 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8466 | symtab_and_line sal = get_last_displayed_sal (); |
8467 | CORE_ADDR pc = sal.pc; | |
8468 | ||
f00aae0f KS |
8469 | sal = find_pc_line (pc, 0); |
8470 | ||
8471 | /* "break" without arguments is equivalent to "break *PC" | |
8472 | where PC is the last displayed codepoint's address. So | |
8473 | make sure to set sal.explicit_pc to prevent GDB from | |
8474 | trying to expand the list of sals to include all other | |
8475 | instances with the same symtab and line. */ | |
8476 | sal.pc = pc; | |
8477 | sal.explicit_pc = 1; | |
8478 | ||
6c5b2ebe PA |
8479 | struct linespec_sals lsal; |
8480 | lsal.sals = {sal}; | |
f00aae0f KS |
8481 | lsal.canonical = NULL; |
8482 | ||
6c5b2ebe | 8483 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8484 | return; |
8485 | } | |
8486 | else | |
8487 | error (_("No default breakpoint address now.")); | |
c906108c | 8488 | } |
c906108c | 8489 | } |
f00aae0f KS |
8490 | |
8491 | /* Force almost all breakpoints to be in terms of the | |
8492 | current_source_symtab (which is decode_line_1's default). | |
8493 | This should produce the results we want almost all of the | |
8494 | time while leaving default_breakpoint_* alone. | |
8495 | ||
8496 | ObjC: However, don't match an Objective-C method name which | |
8497 | may have a '+' or '-' succeeded by a '['. */ | |
8498 | cursal = get_current_source_symtab_and_line (); | |
8499 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8500 | { |
a20714ff | 8501 | const char *spec = NULL; |
cc80f267 | 8502 | |
f00aae0f | 8503 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 8504 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 8505 | |
f00aae0f | 8506 | if (!cursal.symtab |
a20714ff PA |
8507 | || (spec != NULL |
8508 | && strchr ("+-", spec[0]) != NULL | |
8509 | && spec[1] != '[')) | |
f00aae0f | 8510 | { |
c2f4122d | 8511 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
8512 | get_last_displayed_symtab (), |
8513 | get_last_displayed_line (), | |
8514 | canonical, NULL, NULL); | |
8515 | return; | |
8516 | } | |
c906108c | 8517 | } |
f00aae0f | 8518 | |
c2f4122d | 8519 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 8520 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 8521 | } |
c906108c | 8522 | |
c906108c | 8523 | |
c3f6f71d | 8524 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 8525 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 8526 | |
b9362cc7 | 8527 | static void |
6c5b2ebe | 8528 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 8529 | { |
6c5b2ebe PA |
8530 | for (auto &sal : sals) |
8531 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
8532 | } |
8533 | ||
7a697b8d SS |
8534 | /* Fast tracepoints may have restrictions on valid locations. For |
8535 | instance, a fast tracepoint using a jump instead of a trap will | |
8536 | likely have to overwrite more bytes than a trap would, and so can | |
8537 | only be placed where the instruction is longer than the jump, or a | |
8538 | multi-instruction sequence does not have a jump into the middle of | |
8539 | it, etc. */ | |
8540 | ||
8541 | static void | |
8542 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 8543 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 8544 | { |
6c5b2ebe | 8545 | for (const auto &sal : sals) |
7a697b8d | 8546 | { |
f8eba3c6 TT |
8547 | struct gdbarch *sarch; |
8548 | ||
6c5b2ebe | 8549 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
8550 | /* We fall back to GDBARCH if there is no architecture |
8551 | associated with SAL. */ | |
8552 | if (sarch == NULL) | |
8553 | sarch = gdbarch; | |
281d762b TT |
8554 | std::string msg; |
8555 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 8556 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 8557 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
8558 | } |
8559 | } | |
8560 | ||
018d34a4 VP |
8561 | /* Given TOK, a string specification of condition and thread, as |
8562 | accepted by the 'break' command, extract the condition | |
8563 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 8564 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
8565 | If no condition is found, *COND_STRING is set to NULL. |
8566 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
8567 | |
8568 | static void | |
bbc13ae3 | 8569 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
6f781ee3 TT |
8570 | gdb::unique_xmalloc_ptr<char> *cond_string, |
8571 | int *thread, int *task, | |
8572 | gdb::unique_xmalloc_ptr<char> *rest) | |
018d34a4 | 8573 | { |
6f781ee3 | 8574 | cond_string->reset (); |
018d34a4 | 8575 | *thread = -1; |
ed1d1739 | 8576 | *task = 0; |
6f781ee3 | 8577 | rest->reset (); |
733d554a | 8578 | bool force = false; |
ed1d1739 | 8579 | |
018d34a4 VP |
8580 | while (tok && *tok) |
8581 | { | |
bbc13ae3 | 8582 | const char *end_tok; |
018d34a4 | 8583 | int toklen; |
bbc13ae3 KS |
8584 | const char *cond_start = NULL; |
8585 | const char *cond_end = NULL; | |
cc59ec59 | 8586 | |
f1735a53 | 8587 | tok = skip_spaces (tok); |
e7e0cddf SS |
8588 | |
8589 | if ((*tok == '"' || *tok == ',') && rest) | |
8590 | { | |
6f781ee3 | 8591 | rest->reset (savestring (tok, strlen (tok))); |
e7e0cddf SS |
8592 | return; |
8593 | } | |
8594 | ||
f1735a53 | 8595 | end_tok = skip_to_space (tok); |
d634f2de | 8596 | |
018d34a4 | 8597 | toklen = end_tok - tok; |
d634f2de | 8598 | |
018d34a4 VP |
8599 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
8600 | { | |
8601 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
8602 | try |
8603 | { | |
8604 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
8605 | } | |
8606 | catch (const gdb_exception_error &) | |
8607 | { | |
8608 | if (!force) | |
8609 | throw; | |
8610 | else | |
8611 | tok = tok + strlen (tok); | |
8612 | } | |
018d34a4 | 8613 | cond_end = tok; |
6f781ee3 | 8614 | cond_string->reset (savestring (cond_start, cond_end - cond_start)); |
018d34a4 | 8615 | } |
733d554a TBA |
8616 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
8617 | { | |
5759831a | 8618 | tok = tok + toklen; |
733d554a TBA |
8619 | force = true; |
8620 | } | |
018d34a4 VP |
8621 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
8622 | { | |
5d5658a1 PA |
8623 | const char *tmptok; |
8624 | struct thread_info *thr; | |
d634f2de | 8625 | |
018d34a4 | 8626 | tok = end_tok + 1; |
5d5658a1 | 8627 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
8628 | if (tok == tmptok) |
8629 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 8630 | *thread = thr->global_num; |
bbc13ae3 | 8631 | tok = tmptok; |
018d34a4 | 8632 | } |
4a306c9a JB |
8633 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
8634 | { | |
8635 | char *tmptok; | |
8636 | ||
8637 | tok = end_tok + 1; | |
bbc13ae3 | 8638 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
8639 | if (tok == tmptok) |
8640 | error (_("Junk after task keyword.")); | |
8641 | if (!valid_task_id (*task)) | |
b6199126 | 8642 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 8643 | tok = tmptok; |
4a306c9a | 8644 | } |
e7e0cddf SS |
8645 | else if (rest) |
8646 | { | |
6f781ee3 | 8647 | rest->reset (savestring (tok, strlen (tok))); |
ccab2054 | 8648 | return; |
e7e0cddf | 8649 | } |
018d34a4 VP |
8650 | else |
8651 | error (_("Junk at end of arguments.")); | |
8652 | } | |
8653 | } | |
8654 | ||
b5fa468f TBA |
8655 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
8656 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
8657 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
8658 | for the description of these parameters and INPUT. */ | |
8659 | ||
8660 | static void | |
8661 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
6f781ee3 TT |
8662 | const char *input, |
8663 | gdb::unique_xmalloc_ptr<char> *cond_string, | |
8664 | int *thread, int *task, | |
8665 | gdb::unique_xmalloc_ptr<char> *rest) | |
b5fa468f TBA |
8666 | { |
8667 | int num_failures = 0; | |
8668 | for (auto &sal : sals) | |
8669 | { | |
6f781ee3 | 8670 | gdb::unique_xmalloc_ptr<char> cond; |
b5fa468f TBA |
8671 | int thread_id = 0; |
8672 | int task_id = 0; | |
6f781ee3 | 8673 | gdb::unique_xmalloc_ptr<char> remaining; |
b5fa468f TBA |
8674 | |
8675 | /* Here we want to parse 'arg' to separate condition from thread | |
8676 | number. But because parsing happens in a context and the | |
8677 | contexts of sals might be different, try each until there is | |
8678 | success. Finding one successful parse is sufficient for our | |
8679 | goal. When setting the breakpoint we'll re-parse the | |
8680 | condition in the context of each sal. */ | |
8681 | try | |
8682 | { | |
8683 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
8684 | &task_id, &remaining); | |
6f781ee3 | 8685 | *cond_string = std::move (cond); |
b5fa468f TBA |
8686 | *thread = thread_id; |
8687 | *task = task_id; | |
6f781ee3 | 8688 | *rest = std::move (remaining); |
b5fa468f TBA |
8689 | break; |
8690 | } | |
8691 | catch (const gdb_exception_error &e) | |
8692 | { | |
8693 | num_failures++; | |
8694 | /* If no sal remains, do not continue. */ | |
8695 | if (num_failures == sals.size ()) | |
8696 | throw; | |
8697 | } | |
8698 | } | |
8699 | } | |
8700 | ||
0fb4aa4b PA |
8701 | /* Decode a static tracepoint marker spec. */ |
8702 | ||
6c5b2ebe | 8703 | static std::vector<symtab_and_line> |
f00aae0f | 8704 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 8705 | { |
f00aae0f KS |
8706 | const char *p = &(*arg_p)[3]; |
8707 | const char *endp; | |
0fb4aa4b | 8708 | |
f1735a53 | 8709 | p = skip_spaces (p); |
0fb4aa4b | 8710 | |
f1735a53 | 8711 | endp = skip_to_space (p); |
0fb4aa4b | 8712 | |
81b1e71c | 8713 | std::string marker_str (p, endp - p); |
0fb4aa4b | 8714 | |
5d9310c4 SM |
8715 | std::vector<static_tracepoint_marker> markers |
8716 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
8717 | if (markers.empty ()) | |
81b1e71c TT |
8718 | error (_("No known static tracepoint marker named %s"), |
8719 | marker_str.c_str ()); | |
0fb4aa4b | 8720 | |
6c5b2ebe | 8721 | std::vector<symtab_and_line> sals; |
5d9310c4 | 8722 | sals.reserve (markers.size ()); |
0fb4aa4b | 8723 | |
5d9310c4 | 8724 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 8725 | { |
5d9310c4 SM |
8726 | symtab_and_line sal = find_pc_line (marker.address, 0); |
8727 | sal.pc = marker.address; | |
6c5b2ebe | 8728 | sals.push_back (sal); |
5d9310c4 | 8729 | } |
0fb4aa4b | 8730 | |
0fb4aa4b PA |
8731 | *arg_p = endp; |
8732 | return sals; | |
8733 | } | |
8734 | ||
bac7c5cf GB |
8735 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
8736 | according to IS_TRACEPOINT. */ | |
8737 | ||
8738 | static const struct breakpoint_ops * | |
8739 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
8740 | bool is_tracepoint) | |
8741 | { | |
8742 | if (is_tracepoint) | |
8743 | { | |
8744 | if (location_type == PROBE_LOCATION) | |
8745 | return &tracepoint_probe_breakpoint_ops; | |
8746 | else | |
8747 | return &tracepoint_breakpoint_ops; | |
8748 | } | |
8749 | else | |
8750 | { | |
8751 | if (location_type == PROBE_LOCATION) | |
8752 | return &bkpt_probe_breakpoint_ops; | |
8753 | else | |
8754 | return &bkpt_breakpoint_ops; | |
8755 | } | |
8756 | } | |
8757 | ||
8758 | /* See breakpoint.h. */ | |
8759 | ||
8760 | const struct breakpoint_ops * | |
8761 | breakpoint_ops_for_event_location (const struct event_location *location, | |
8762 | bool is_tracepoint) | |
8763 | { | |
8764 | if (location != nullptr) | |
8765 | return breakpoint_ops_for_event_location_type | |
8766 | (event_location_type (location), is_tracepoint); | |
8767 | return is_tracepoint ? &tracepoint_breakpoint_ops : &bkpt_breakpoint_ops; | |
8768 | } | |
8769 | ||
f00aae0f | 8770 | /* See breakpoint.h. */ |
0101ce28 | 8771 | |
8cdf0e15 VP |
8772 | int |
8773 | create_breakpoint (struct gdbarch *gdbarch, | |
626d2320 | 8774 | struct event_location *location, |
e1e01040 PA |
8775 | const char *cond_string, |
8776 | int thread, const char *extra_string, | |
10a636cc | 8777 | bool force_condition, int parse_extra, |
0fb4aa4b | 8778 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
8779 | int ignore_count, |
8780 | enum auto_boolean pending_break_support, | |
c0a91b2b | 8781 | const struct breakpoint_ops *ops, |
44f238bb PA |
8782 | int from_tty, int enabled, int internal, |
8783 | unsigned flags) | |
c3f6f71d | 8784 | { |
7efd8fc2 | 8785 | struct linespec_result canonical; |
0101ce28 | 8786 | int pending = 0; |
4a306c9a | 8787 | int task = 0; |
86b17b60 | 8788 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 8789 | |
348d480f PA |
8790 | gdb_assert (ops != NULL); |
8791 | ||
f00aae0f KS |
8792 | /* If extra_string isn't useful, set it to NULL. */ |
8793 | if (extra_string != NULL && *extra_string == '\0') | |
8794 | extra_string = NULL; | |
8795 | ||
a70b8144 | 8796 | try |
b78a6381 | 8797 | { |
f00aae0f | 8798 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 8799 | } |
230d2906 | 8800 | catch (const gdb_exception_error &e) |
0101ce28 | 8801 | { |
492d29ea PA |
8802 | /* If caller is interested in rc value from parse, set |
8803 | value. */ | |
8804 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 8805 | { |
05ff989b AC |
8806 | /* If pending breakpoint support is turned off, throw |
8807 | error. */ | |
fa8d40ab JJ |
8808 | |
8809 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 8810 | throw; |
723a2275 VP |
8811 | |
8812 | exception_print (gdb_stderr, e); | |
fa8d40ab | 8813 | |
dda83cd7 | 8814 | /* If pending breakpoint support is auto query and the user |
05ff989b | 8815 | selects no, then simply return the error code. */ |
059fb39f | 8816 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
8817 | && !nquery (_("Make %s pending on future shared library load? "), |
8818 | bptype_string (type_wanted))) | |
fd9b8c24 | 8819 | return 0; |
fa8d40ab | 8820 | |
05ff989b AC |
8821 | /* At this point, either the user was queried about setting |
8822 | a pending breakpoint and selected yes, or pending | |
8823 | breakpoint behavior is on and thus a pending breakpoint | |
8824 | is defaulted on behalf of the user. */ | |
f00aae0f | 8825 | pending = 1; |
0101ce28 | 8826 | } |
492d29ea | 8827 | else |
eedc3f4f | 8828 | throw; |
0101ce28 | 8829 | } |
492d29ea | 8830 | |
6c5b2ebe | 8831 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 8832 | return 0; |
c3f6f71d | 8833 | |
c3f6f71d JM |
8834 | /* Resolve all line numbers to PC's and verify that the addresses |
8835 | are ok for the target. */ | |
0101ce28 | 8836 | if (!pending) |
f8eba3c6 | 8837 | { |
6c5b2ebe PA |
8838 | for (auto &lsal : canonical.lsals) |
8839 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 8840 | } |
c3f6f71d | 8841 | |
7a697b8d | 8842 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 8843 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 8844 | { |
6c5b2ebe PA |
8845 | for (const auto &lsal : canonical.lsals) |
8846 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 8847 | } |
7a697b8d | 8848 | |
c3f6f71d JM |
8849 | /* Verify that condition can be parsed, before setting any |
8850 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 8851 | breakpoint. */ |
0101ce28 | 8852 | if (!pending) |
c3f6f71d | 8853 | { |
e1e01040 PA |
8854 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
8855 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
8856 | ||
f00aae0f | 8857 | if (parse_extra) |
dda83cd7 | 8858 | { |
6f781ee3 TT |
8859 | gdb::unique_xmalloc_ptr<char> rest; |
8860 | gdb::unique_xmalloc_ptr<char> cond; | |
52d361e1 | 8861 | |
6c5b2ebe | 8862 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 8863 | |
b5fa468f TBA |
8864 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
8865 | &cond, &thread, &task, &rest); | |
6f781ee3 TT |
8866 | cond_string_copy = std::move (cond); |
8867 | extra_string_copy = std::move (rest); | |
dda83cd7 | 8868 | } |
2f069f6f | 8869 | else |
dda83cd7 | 8870 | { |
f00aae0f KS |
8871 | if (type_wanted != bp_dprintf |
8872 | && extra_string != NULL && *extra_string != '\0') | |
8873 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa | 8874 | |
10a636cc TBA |
8875 | /* Check the validity of the condition. We should error out |
8876 | if the condition is invalid at all of the locations and | |
8877 | if it is not forced. In the PARSE_EXTRA case above, this | |
8878 | check is done when parsing the EXTRA_STRING. */ | |
8879 | if (cond_string != nullptr && !force_condition) | |
8880 | { | |
8881 | int num_failures = 0; | |
8882 | const linespec_sals &lsal = canonical.lsals[0]; | |
8883 | for (const auto &sal : lsal.sals) | |
8884 | { | |
8885 | const char *cond = cond_string; | |
8886 | try | |
8887 | { | |
8888 | parse_exp_1 (&cond, sal.pc, block_for_pc (sal.pc), 0); | |
8889 | /* One success is sufficient to keep going. */ | |
8890 | break; | |
8891 | } | |
8892 | catch (const gdb_exception_error &) | |
8893 | { | |
8894 | num_failures++; | |
8895 | /* If this is the last sal, error out. */ | |
8896 | if (num_failures == lsal.sals.size ()) | |
8897 | throw; | |
8898 | } | |
8899 | } | |
8900 | } | |
8901 | ||
0878d0fa YQ |
8902 | /* Create a private copy of condition string. */ |
8903 | if (cond_string) | |
e1e01040 | 8904 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
8905 | /* Create a private copy of any extra string. */ |
8906 | if (extra_string) | |
e1e01040 | 8907 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 8908 | } |
0fb4aa4b | 8909 | |
52d361e1 | 8910 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
8911 | std::move (cond_string_copy), |
8912 | std::move (extra_string_copy), | |
8913 | type_wanted, | |
d9b3f62e PA |
8914 | tempflag ? disp_del : disp_donttouch, |
8915 | thread, task, ignore_count, ops, | |
44f238bb | 8916 | from_tty, enabled, internal, flags); |
c906108c | 8917 | } |
0101ce28 JJ |
8918 | else |
8919 | { | |
a5e364af | 8920 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 8921 | |
a5e364af | 8922 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 8923 | b->location = copy_event_location (location); |
bfccc43c | 8924 | |
f00aae0f KS |
8925 | if (parse_extra) |
8926 | b->cond_string = NULL; | |
e12c7713 MK |
8927 | else |
8928 | { | |
8929 | /* Create a private copy of condition string. */ | |
6f781ee3 TT |
8930 | b->cond_string.reset (cond_string != NULL |
8931 | ? xstrdup (cond_string) | |
8932 | : NULL); | |
15630549 | 8933 | b->thread = thread; |
e12c7713 | 8934 | } |
f00aae0f KS |
8935 | |
8936 | /* Create a private copy of any extra string. */ | |
6f781ee3 TT |
8937 | b->extra_string.reset (extra_string != NULL |
8938 | ? xstrdup (extra_string) | |
8939 | : NULL); | |
0101ce28 | 8940 | b->ignore_count = ignore_count; |
0101ce28 | 8941 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 8942 | b->condition_not_parsed = 1; |
41447f92 | 8943 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 8944 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 8945 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 8946 | b->pspace = current_program_space; |
8bea4e01 | 8947 | |
b270e6f9 | 8948 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
8949 | } |
8950 | ||
6c5b2ebe | 8951 | if (canonical.lsals.size () > 1) |
95a42b64 | 8952 | { |
3e43a32a MS |
8953 | warning (_("Multiple breakpoints were set.\nUse the " |
8954 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 8955 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
8956 | } |
8957 | ||
44702360 | 8958 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
8959 | |
8960 | return 1; | |
c3f6f71d | 8961 | } |
c906108c | 8962 | |
348d480f | 8963 | /* Set a breakpoint. |
72b2ff0e VP |
8964 | ARG is a string describing breakpoint address, |
8965 | condition, and thread. | |
8966 | FLAG specifies if a breakpoint is hardware on, | |
8967 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
8968 | and BP_TEMPFLAG. */ | |
348d480f | 8969 | |
98deb0da | 8970 | static void |
f2fc3015 | 8971 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 8972 | { |
72b2ff0e | 8973 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
8974 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
8975 | ? bp_hardware_breakpoint | |
8976 | : bp_breakpoint); | |
f00aae0f | 8977 | |
ffc2605c | 8978 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
8979 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
8980 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 8981 | |
8cdf0e15 | 8982 | create_breakpoint (get_current_arch (), |
ffc2605c | 8983 | location.get (), |
10a636cc | 8984 | NULL, 0, arg, false, 1 /* parse arg */, |
0fb4aa4b | 8985 | tempflag, type_wanted, |
8cdf0e15 VP |
8986 | 0 /* Ignore count */, |
8987 | pending_break_support, | |
55aa24fb | 8988 | ops, |
8cdf0e15 | 8989 | from_tty, |
84f4c1fe | 8990 | 1 /* enabled */, |
44f238bb PA |
8991 | 0 /* internal */, |
8992 | 0); | |
c906108c SS |
8993 | } |
8994 | ||
c906108c SS |
8995 | /* Helper function for break_command_1 and disassemble_command. */ |
8996 | ||
8997 | void | |
fba45db2 | 8998 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
8999 | { |
9000 | CORE_ADDR pc; | |
9001 | ||
9002 | if (sal->pc == 0 && sal->symtab != NULL) | |
9003 | { | |
9004 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9005 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9006 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9007 | sal->pc = pc; |
6a048695 | 9008 | |
4a64f543 | 9009 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9010 | number, then skip the function prologue if necessary. */ |
6a048695 | 9011 | if (sal->explicit_line) |
059acae7 | 9012 | skip_prologue_sal (sal); |
c906108c SS |
9013 | } |
9014 | ||
9015 | if (sal->section == 0 && sal->symtab != NULL) | |
9016 | { | |
346d1dfe | 9017 | const struct blockvector *bv; |
3977b71f | 9018 | const struct block *b; |
c5aa993b | 9019 | struct symbol *sym; |
c906108c | 9020 | |
43f3e411 | 9021 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
c6159652 | 9022 | sal->symtab->compunit ()); |
c906108c SS |
9023 | if (bv != NULL) |
9024 | { | |
7f0df278 | 9025 | sym = block_linkage_function (b); |
c906108c SS |
9026 | if (sym != NULL) |
9027 | { | |
3c86fae3 SM |
9028 | fixup_symbol_section (sym, sal->symtab->compunit ()->objfile ()); |
9029 | sal->section | |
9030 | = sym->obj_section (sal->symtab->compunit ()->objfile ()); | |
c906108c SS |
9031 | } |
9032 | else | |
9033 | { | |
4a64f543 | 9034 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9035 | just have to look harder. This case can be executed |
9036 | if we have line numbers but no functions (as can | |
9037 | happen in assembly source). */ | |
c906108c | 9038 | |
5ed8105e | 9039 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9040 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9041 | |
5ed8105e | 9042 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9043 | if (msym.minsym) |
1db66e34 | 9044 | sal->section = msym.obj_section (); |
c906108c SS |
9045 | } |
9046 | } | |
9047 | } | |
9048 | } | |
9049 | ||
9050 | void | |
0b39b52e | 9051 | break_command (const char *arg, int from_tty) |
c906108c | 9052 | { |
db107f19 | 9053 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9054 | } |
9055 | ||
c906108c | 9056 | void |
0b39b52e | 9057 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9058 | { |
db107f19 | 9059 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9060 | } |
9061 | ||
c906108c | 9062 | static void |
0b39b52e | 9063 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9064 | { |
db107f19 | 9065 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9066 | } |
9067 | ||
9068 | static void | |
0b39b52e | 9069 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9070 | { |
db107f19 | 9071 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9072 | } |
9073 | ||
e7e0cddf SS |
9074 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9075 | with a prewired command list consisting of a single output command, | |
9076 | built from extra arguments supplied on the dprintf command | |
9077 | line. */ | |
9078 | ||
da821c7b | 9079 | static void |
0b39b52e | 9080 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9081 | { |
ffc2605c | 9082 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9083 | |
9084 | /* If non-NULL, ARG should have been advanced past the location; | |
9085 | the next character must be ','. */ | |
9086 | if (arg != NULL) | |
9087 | { | |
9088 | if (arg[0] != ',' || arg[1] == '\0') | |
9089 | error (_("Format string required")); | |
9090 | else | |
9091 | { | |
9092 | /* Skip the comma. */ | |
9093 | ++arg; | |
9094 | } | |
9095 | } | |
9096 | ||
e7e0cddf | 9097 | create_breakpoint (get_current_arch (), |
ffc2605c | 9098 | location.get (), |
10a636cc | 9099 | NULL, 0, arg, false, 1 /* parse arg */, |
e7e0cddf SS |
9100 | 0, bp_dprintf, |
9101 | 0 /* Ignore count */, | |
9102 | pending_break_support, | |
9103 | &dprintf_breakpoint_ops, | |
9104 | from_tty, | |
9105 | 1 /* enabled */, | |
9106 | 0 /* internal */, | |
9107 | 0); | |
9108 | } | |
9109 | ||
d3ce09f5 | 9110 | static void |
0b39b52e | 9111 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9112 | { |
9113 | error (_("May only run agent-printf on the target")); | |
9114 | } | |
9115 | ||
f1310107 TJB |
9116 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9117 | ranged breakpoints. */ | |
9118 | ||
9119 | static int | |
9120 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9121 | const address_space *aspace, |
09ac7c10 | 9122 | CORE_ADDR bp_addr, |
c272a98c | 9123 | const target_waitstatus &ws) |
f1310107 | 9124 | { |
c272a98c SM |
9125 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
9126 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
9127 | return 0; |
9128 | ||
f1310107 TJB |
9129 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9130 | bl->length, aspace, bp_addr); | |
9131 | } | |
9132 | ||
9133 | /* Implement the "resources_needed" breakpoint_ops method for | |
9134 | ranged breakpoints. */ | |
9135 | ||
9136 | static int | |
9137 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9138 | { | |
9139 | return target_ranged_break_num_registers (); | |
9140 | } | |
9141 | ||
9142 | /* Implement the "print_it" breakpoint_ops method for | |
9143 | ranged breakpoints. */ | |
9144 | ||
9145 | static enum print_stop_action | |
313f3b21 | 9146 | print_it_ranged_breakpoint (bpstat *bs) |
f1310107 | 9147 | { |
348d480f | 9148 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9149 | struct bp_location *bl = b->loc; |
79a45e25 | 9150 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9151 | |
9152 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9153 | ||
9154 | /* Ranged breakpoints have only one location. */ | |
9155 | gdb_assert (bl && bl->next == NULL); | |
9156 | ||
9157 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9158 | |
9159 | maybe_print_thread_hit_breakpoint (uiout); | |
9160 | ||
f1310107 | 9161 | if (b->disposition == disp_del) |
112e8700 | 9162 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9163 | else |
112e8700 SM |
9164 | uiout->text ("Ranged breakpoint "); |
9165 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9166 | { |
112e8700 | 9167 | uiout->field_string ("reason", |
f1310107 | 9168 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9169 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9170 | } |
381befee | 9171 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 9172 | uiout->text (", "); |
f1310107 TJB |
9173 | |
9174 | return PRINT_SRC_AND_LOC; | |
9175 | } | |
9176 | ||
9177 | /* Implement the "print_one" breakpoint_ops method for | |
9178 | ranged breakpoints. */ | |
9179 | ||
c01e038b | 9180 | static bool |
f1310107 TJB |
9181 | print_one_ranged_breakpoint (struct breakpoint *b, |
9182 | struct bp_location **last_loc) | |
9183 | { | |
9184 | struct bp_location *bl = b->loc; | |
9185 | struct value_print_options opts; | |
79a45e25 | 9186 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9187 | |
9188 | /* Ranged breakpoints have only one location. */ | |
9189 | gdb_assert (bl && bl->next == NULL); | |
9190 | ||
9191 | get_user_print_options (&opts); | |
9192 | ||
9193 | if (opts.addressprint) | |
9194 | /* We don't print the address range here, it will be printed later | |
9195 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9196 | uiout->field_skip ("addr"); |
f1310107 TJB |
9197 | annotate_field (5); |
9198 | print_breakpoint_location (b, bl); | |
9199 | *last_loc = bl; | |
c01e038b TT |
9200 | |
9201 | return true; | |
f1310107 TJB |
9202 | } |
9203 | ||
9204 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9205 | ranged breakpoints. */ | |
9206 | ||
9207 | static void | |
9208 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9209 | struct ui_out *uiout) | |
9210 | { | |
9211 | CORE_ADDR address_start, address_end; | |
9212 | struct bp_location *bl = b->loc; | |
d7e74731 | 9213 | string_file stb; |
f1310107 TJB |
9214 | |
9215 | gdb_assert (bl); | |
9216 | ||
9217 | address_start = bl->address; | |
9218 | address_end = address_start + bl->length - 1; | |
9219 | ||
112e8700 | 9220 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9221 | stb.printf ("[%s, %s]", |
9222 | print_core_address (bl->gdbarch, address_start), | |
9223 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9224 | uiout->field_stream ("addr", stb); |
9225 | uiout->text ("\n"); | |
f1310107 TJB |
9226 | } |
9227 | ||
9228 | /* Implement the "print_mention" breakpoint_ops method for | |
9229 | ranged breakpoints. */ | |
9230 | ||
9231 | static void | |
9232 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9233 | { | |
9234 | struct bp_location *bl = b->loc; | |
79a45e25 | 9235 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9236 | |
9237 | gdb_assert (bl); | |
9238 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9239 | ||
2d33446d TT |
9240 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9241 | b->number, paddress (bl->gdbarch, bl->address), | |
9242 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9243 | } |
9244 | ||
9245 | /* Implement the "print_recreate" breakpoint_ops method for | |
9246 | ranged breakpoints. */ | |
9247 | ||
9248 | static void | |
9249 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9250 | { | |
6cb06a8c TT |
9251 | gdb_printf (fp, "break-range %s, %s", |
9252 | event_location_to_string (b->location.get ()), | |
9253 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9254 | print_recreate_thread (b, fp); |
f1310107 TJB |
9255 | } |
9256 | ||
9257 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9258 | ||
2060206e | 9259 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9260 | |
9261 | /* Find the address where the end of the breakpoint range should be | |
9262 | placed, given the SAL of the end of the range. This is so that if | |
9263 | the user provides a line number, the end of the range is set to the | |
9264 | last instruction of the given line. */ | |
9265 | ||
9266 | static CORE_ADDR | |
9267 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9268 | { | |
9269 | CORE_ADDR end; | |
9270 | ||
9271 | /* If the user provided a PC value, use it. Otherwise, | |
9272 | find the address of the end of the given location. */ | |
9273 | if (sal.explicit_pc) | |
9274 | end = sal.pc; | |
9275 | else | |
9276 | { | |
9277 | int ret; | |
9278 | CORE_ADDR start; | |
9279 | ||
9280 | ret = find_line_pc_range (sal, &start, &end); | |
9281 | if (!ret) | |
9282 | error (_("Could not find location of the end of the range.")); | |
9283 | ||
9284 | /* find_line_pc_range returns the start of the next line. */ | |
9285 | end--; | |
9286 | } | |
9287 | ||
9288 | return end; | |
9289 | } | |
9290 | ||
9291 | /* Implement the "break-range" CLI command. */ | |
9292 | ||
9293 | static void | |
0b39b52e | 9294 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9295 | { |
f2fc3015 | 9296 | const char *arg_start; |
f1310107 TJB |
9297 | struct linespec_result canonical_start, canonical_end; |
9298 | int bp_count, can_use_bp, length; | |
9299 | CORE_ADDR end; | |
9300 | struct breakpoint *b; | |
f1310107 TJB |
9301 | |
9302 | /* We don't support software ranged breakpoints. */ | |
9303 | if (target_ranged_break_num_registers () < 0) | |
9304 | error (_("This target does not support hardware ranged breakpoints.")); | |
9305 | ||
9306 | bp_count = hw_breakpoint_used_count (); | |
9307 | bp_count += target_ranged_break_num_registers (); | |
9308 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9309 | bp_count, 0); | |
9310 | if (can_use_bp < 0) | |
9311 | error (_("Hardware breakpoints used exceeds limit.")); | |
9312 | ||
f8eba3c6 | 9313 | arg = skip_spaces (arg); |
f1310107 TJB |
9314 | if (arg == NULL || arg[0] == '\0') |
9315 | error(_("No address range specified.")); | |
9316 | ||
f8eba3c6 | 9317 | arg_start = arg; |
ffc2605c TT |
9318 | event_location_up start_location = string_to_event_location (&arg, |
9319 | current_language); | |
9320 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9321 | |
9322 | if (arg[0] != ',') | |
9323 | error (_("Too few arguments.")); | |
6c5b2ebe | 9324 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9325 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9326 | |
6c5b2ebe | 9327 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9328 | |
6c5b2ebe PA |
9329 | if (canonical_start.lsals.size () > 1 |
9330 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9331 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9332 | ||
6c5b2ebe | 9333 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9334 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9335 | |
9336 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9337 | arg = skip_spaces (arg); |
f1310107 TJB |
9338 | |
9339 | /* Parse the end location. */ | |
9340 | ||
f1310107 TJB |
9341 | arg_start = arg; |
9342 | ||
f8eba3c6 | 9343 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9344 | parse_breakpoint_sals because we need to specify the start location's |
9345 | symtab and line as the default symtab and line for the end of the | |
9346 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9347 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9348 | event_location_up end_location = string_to_event_location (&arg, |
9349 | current_language); | |
9350 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9351 | sal_start.symtab, sal_start.line, |
9352 | &canonical_end, NULL, NULL); | |
9353 | ||
6c5b2ebe | 9354 | if (canonical_end.lsals.empty ()) |
f1310107 | 9355 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9356 | |
6c5b2ebe PA |
9357 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9358 | if (canonical_end.lsals.size () > 1 | |
9359 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9360 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9361 | ||
6c5b2ebe | 9362 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9363 | |
9364 | end = find_breakpoint_range_end (sal_end); | |
9365 | if (sal_start.pc > end) | |
177b42fe | 9366 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9367 | |
9368 | length = end - sal_start.pc + 1; | |
9369 | if (length < 0) | |
9370 | /* Length overflowed. */ | |
9371 | error (_("Address range too large.")); | |
9372 | else if (length == 1) | |
9373 | { | |
9374 | /* This range is simple enough to be handled by | |
9375 | the `hbreak' command. */ | |
81b1e71c | 9376 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9377 | |
9378 | return; | |
9379 | } | |
9380 | ||
9381 | /* Now set up the breakpoint. */ | |
9382 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9383 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9384 | set_breakpoint_count (breakpoint_count + 1); |
9385 | b->number = breakpoint_count; | |
9386 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9387 | b->location = std::move (start_location); |
9388 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9389 | b->loc->length = length; |
9390 | ||
f1310107 | 9391 | mention (b); |
76727919 | 9392 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9393 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9394 | } |
9395 | ||
4a64f543 MS |
9396 | /* Return non-zero if EXP is verified as constant. Returned zero |
9397 | means EXP is variable. Also the constant detection may fail for | |
9398 | some constant expressions and in such case still falsely return | |
9399 | zero. */ | |
2e6e3d9c | 9400 | |
dab72643 | 9401 | static bool |
65d79d4b SDJ |
9402 | watchpoint_exp_is_const (const struct expression *exp) |
9403 | { | |
1eaebe02 | 9404 | return exp->op->constant_p (); |
65d79d4b SDJ |
9405 | } |
9406 | ||
3a292923 | 9407 | /* Implement the "re_set" method for watchpoints. */ |
348d480f | 9408 | |
3a292923 TT |
9409 | void |
9410 | watchpoint::re_set () | |
348d480f PA |
9411 | { |
9412 | /* Watchpoint can be either on expression using entirely global | |
9413 | variables, or it can be on local variables. | |
9414 | ||
9415 | Watchpoints of the first kind are never auto-deleted, and even | |
9416 | persist across program restarts. Since they can use variables | |
9417 | from shared libraries, we need to reparse expression as libraries | |
9418 | are loaded and unloaded. | |
9419 | ||
9420 | Watchpoints on local variables can also change meaning as result | |
9421 | of solib event. For example, if a watchpoint uses both a local | |
9422 | and a global variables in expression, it's a local watchpoint, | |
9423 | but unloading of a shared library will make the expression | |
9424 | invalid. This is not a very common use case, but we still | |
9425 | re-evaluate expression, to avoid surprises to the user. | |
9426 | ||
9427 | Note that for local watchpoints, we re-evaluate it only if | |
9428 | watchpoints frame id is still valid. If it's not, it means the | |
9429 | watchpoint is out of scope and will be deleted soon. In fact, | |
9430 | I'm not sure we'll ever be called in this case. | |
9431 | ||
9432 | If a local watchpoint's frame id is still valid, then | |
3a292923 | 9433 | exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 9434 | |
3a5c3e22 PA |
9435 | Don't do anything about disabled watchpoints, since they will be |
9436 | reevaluated again when enabled. */ | |
3a292923 | 9437 | update_watchpoint (this, 1 /* reparse */); |
348d480f PA |
9438 | } |
9439 | ||
3a292923 | 9440 | /* Implement the "insert" method for hardware watchpoints. */ |
77b06cd7 | 9441 | |
3a292923 TT |
9442 | int |
9443 | watchpoint::insert_location (struct bp_location *bl) | |
77b06cd7 | 9444 | { |
3a292923 | 9445 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9446 | |
9447 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9448 | cond_exp.get ()); |
77b06cd7 TJB |
9449 | } |
9450 | ||
3a292923 | 9451 | /* Implement the "remove" method for hardware watchpoints. */ |
77b06cd7 | 9452 | |
3a292923 TT |
9453 | int |
9454 | watchpoint::remove_location (struct bp_location *bl, | |
9455 | enum remove_bp_reason reason) | |
77b06cd7 | 9456 | { |
3a292923 | 9457 | int length = exact ? 1 : bl->length; |
e09342b5 TJB |
9458 | |
9459 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a292923 | 9460 | cond_exp.get ()); |
e09342b5 TJB |
9461 | } |
9462 | ||
3a292923 TT |
9463 | int |
9464 | watchpoint::breakpoint_hit (const struct bp_location *bl, | |
9465 | const address_space *aspace, CORE_ADDR bp_addr, | |
9466 | const target_waitstatus &ws) | |
e09342b5 | 9467 | { |
348d480f | 9468 | struct breakpoint *b = bl->owner; |
77b06cd7 | 9469 | |
348d480f PA |
9470 | /* Continuable hardware watchpoints are treated as non-existent if the |
9471 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
9472 | some data address). Otherwise gdb won't stop on a break instruction | |
9473 | in the code (not from a breakpoint) when a hardware watchpoint has | |
9474 | been defined. Also skip watchpoints which we know did not trigger | |
9475 | (did not match the data address). */ | |
9476 | if (is_hardware_watchpoint (b) | |
3a292923 | 9477 | && watchpoint_triggered == watch_triggered_no) |
348d480f | 9478 | return 0; |
9c06b0b4 | 9479 | |
348d480f | 9480 | return 1; |
9c06b0b4 TJB |
9481 | } |
9482 | ||
3a292923 TT |
9483 | void |
9484 | watchpoint::check_status (bpstat *bs) | |
9c06b0b4 | 9485 | { |
348d480f | 9486 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 9487 | |
348d480f | 9488 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
9489 | } |
9490 | ||
3a292923 TT |
9491 | /* Implement the "resources_needed" method for hardware |
9492 | watchpoints. */ | |
9c06b0b4 | 9493 | |
3a292923 TT |
9494 | int |
9495 | watchpoint::resources_needed (const struct bp_location *bl) | |
9c06b0b4 | 9496 | { |
3a292923 | 9497 | int length = exact? 1 : bl->length; |
348d480f PA |
9498 | |
9499 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
9500 | } |
9501 | ||
3a292923 TT |
9502 | /* Implement the "works_in_software_mode" method for hardware |
9503 | watchpoints. */ | |
9c06b0b4 | 9504 | |
3a292923 TT |
9505 | int |
9506 | watchpoint::works_in_software_mode () const | |
9c06b0b4 | 9507 | { |
efa80663 | 9508 | /* Read and access watchpoints only work with hardware support. */ |
3a292923 | 9509 | return type == bp_watchpoint || type == bp_hardware_watchpoint; |
9c06b0b4 TJB |
9510 | } |
9511 | ||
3a292923 TT |
9512 | enum print_stop_action |
9513 | watchpoint::print_it (bpstat *bs) | |
9c06b0b4 | 9514 | { |
348d480f | 9515 | struct breakpoint *b; |
348d480f | 9516 | enum print_stop_action result; |
79a45e25 | 9517 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9518 | |
9519 | gdb_assert (bs->bp_location_at != NULL); | |
9520 | ||
348d480f PA |
9521 | b = bs->breakpoint_at; |
9522 | ||
f303dbd6 PA |
9523 | annotate_watchpoint (b->number); |
9524 | maybe_print_thread_hit_breakpoint (uiout); | |
9525 | ||
d7e74731 PA |
9526 | string_file stb; |
9527 | ||
76f9c9cf | 9528 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
9529 | switch (b->type) |
9530 | { | |
348d480f | 9531 | case bp_watchpoint: |
9c06b0b4 | 9532 | case bp_hardware_watchpoint: |
112e8700 SM |
9533 | if (uiout->is_mi_like_p ()) |
9534 | uiout->field_string | |
9535 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 9536 | mention (b); |
76f9c9cf | 9537 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9538 | uiout->text ("\nOld value = "); |
850645cf | 9539 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9540 | uiout->field_stream ("old", stb); |
9541 | uiout->text ("\nNew value = "); | |
3a292923 | 9542 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9543 | uiout->field_stream ("new", stb); |
9544 | uiout->text ("\n"); | |
348d480f PA |
9545 | /* More than one watchpoint may have been triggered. */ |
9546 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
9547 | break; |
9548 | ||
9549 | case bp_read_watchpoint: | |
112e8700 SM |
9550 | if (uiout->is_mi_like_p ()) |
9551 | uiout->field_string | |
9552 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 9553 | mention (b); |
76f9c9cf | 9554 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9555 | uiout->text ("\nValue = "); |
3a292923 | 9556 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9557 | uiout->field_stream ("value", stb); |
9558 | uiout->text ("\n"); | |
348d480f | 9559 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9560 | break; |
9561 | ||
9562 | case bp_access_watchpoint: | |
348d480f PA |
9563 | if (bs->old_val != NULL) |
9564 | { | |
112e8700 SM |
9565 | if (uiout->is_mi_like_p ()) |
9566 | uiout->field_string | |
9567 | ("reason", | |
348d480f PA |
9568 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9569 | mention (b); | |
76f9c9cf | 9570 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9571 | uiout->text ("\nOld value = "); |
850645cf | 9572 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
9573 | uiout->field_stream ("old", stb); |
9574 | uiout->text ("\nNew value = "); | |
348d480f PA |
9575 | } |
9576 | else | |
9577 | { | |
9578 | mention (b); | |
112e8700 SM |
9579 | if (uiout->is_mi_like_p ()) |
9580 | uiout->field_string | |
9581 | ("reason", | |
348d480f | 9582 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 9583 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 9584 | uiout->text ("\nValue = "); |
348d480f | 9585 | } |
3a292923 | 9586 | watchpoint_value_print (val.get (), &stb); |
112e8700 SM |
9587 | uiout->field_stream ("new", stb); |
9588 | uiout->text ("\n"); | |
348d480f | 9589 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9590 | break; |
9591 | default: | |
348d480f | 9592 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
9593 | } |
9594 | ||
348d480f PA |
9595 | return result; |
9596 | } | |
9597 | ||
3a292923 | 9598 | /* Implement the "print_mention" method for hardware watchpoints. */ |
348d480f | 9599 | |
3a292923 TT |
9600 | void |
9601 | watchpoint::print_mention () | |
348d480f | 9602 | { |
79a45e25 | 9603 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9604 | const char *tuple_name; |
348d480f | 9605 | |
3a292923 | 9606 | switch (type) |
348d480f PA |
9607 | { |
9608 | case bp_watchpoint: | |
112e8700 | 9609 | uiout->text ("Watchpoint "); |
46b9c129 | 9610 | tuple_name = "wpt"; |
348d480f PA |
9611 | break; |
9612 | case bp_hardware_watchpoint: | |
112e8700 | 9613 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 9614 | tuple_name = "wpt"; |
348d480f PA |
9615 | break; |
9616 | case bp_read_watchpoint: | |
112e8700 | 9617 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 9618 | tuple_name = "hw-rwpt"; |
348d480f PA |
9619 | break; |
9620 | case bp_access_watchpoint: | |
112e8700 | 9621 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 9622 | tuple_name = "hw-awpt"; |
348d480f PA |
9623 | break; |
9624 | default: | |
9625 | internal_error (__FILE__, __LINE__, | |
9626 | _("Invalid hardware watchpoint type.")); | |
9627 | } | |
9628 | ||
46b9c129 | 9629 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9630 | uiout->field_signed ("number", number); |
112e8700 | 9631 | uiout->text (": "); |
3a292923 | 9632 | uiout->field_string ("exp", exp_string.get ()); |
348d480f PA |
9633 | } |
9634 | ||
3a292923 | 9635 | /* Implement the "print_recreate" method for watchpoints. */ |
348d480f | 9636 | |
3a292923 TT |
9637 | void |
9638 | watchpoint::print_recreate (struct ui_file *fp) | |
348d480f | 9639 | { |
3a292923 | 9640 | switch (type) |
348d480f PA |
9641 | { |
9642 | case bp_watchpoint: | |
9643 | case bp_hardware_watchpoint: | |
6cb06a8c | 9644 | gdb_printf (fp, "watch"); |
348d480f PA |
9645 | break; |
9646 | case bp_read_watchpoint: | |
6cb06a8c | 9647 | gdb_printf (fp, "rwatch"); |
348d480f PA |
9648 | break; |
9649 | case bp_access_watchpoint: | |
6cb06a8c | 9650 | gdb_printf (fp, "awatch"); |
348d480f PA |
9651 | break; |
9652 | default: | |
9653 | internal_error (__FILE__, __LINE__, | |
9654 | _("Invalid watchpoint type.")); | |
9655 | } | |
9656 | ||
3a292923 TT |
9657 | gdb_printf (fp, " %s", exp_string.get ()); |
9658 | print_recreate_thread (this, fp); | |
348d480f PA |
9659 | } |
9660 | ||
3a292923 | 9661 | /* Implement the "explains_signal" method for watchpoints. */ |
427cd150 | 9662 | |
3a292923 TT |
9663 | int |
9664 | watchpoint::explains_signal (enum gdb_signal sig) | |
427cd150 TT |
9665 | { |
9666 | /* A software watchpoint cannot cause a signal other than | |
9667 | GDB_SIGNAL_TRAP. */ | |
3a292923 | 9668 | if (type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) |
47591c29 | 9669 | return 0; |
427cd150 | 9670 | |
47591c29 | 9671 | return 1; |
427cd150 TT |
9672 | } |
9673 | ||
3a292923 TT |
9674 | struct masked_watchpoint : public watchpoint |
9675 | { | |
9676 | int insert_location (struct bp_location *) override; | |
9677 | int remove_location (struct bp_location *, | |
9678 | enum remove_bp_reason reason) override; | |
9679 | int resources_needed (const struct bp_location *) override; | |
9680 | int works_in_software_mode () const override; | |
9681 | enum print_stop_action print_it (struct bpstat *bs) override; | |
9682 | void print_one_detail (struct ui_out *) const override; | |
9683 | void print_mention () override; | |
9684 | void print_recreate (struct ui_file *fp) override; | |
9685 | }; | |
348d480f | 9686 | |
3a292923 | 9687 | /* Implement the "insert" method for masked hardware watchpoints. */ |
348d480f | 9688 | |
3a292923 TT |
9689 | int |
9690 | masked_watchpoint::insert_location (struct bp_location *bl) | |
348d480f | 9691 | { |
3a292923 | 9692 | return target_insert_mask_watchpoint (bl->address, hw_wp_mask, |
348d480f PA |
9693 | bl->watchpoint_type); |
9694 | } | |
9695 | ||
3a292923 | 9696 | /* Implement the "remove" method for masked hardware watchpoints. */ |
348d480f | 9697 | |
3a292923 TT |
9698 | int |
9699 | masked_watchpoint::remove_location (struct bp_location *bl, | |
9700 | enum remove_bp_reason reason) | |
348d480f | 9701 | { |
3a292923 | 9702 | return target_remove_mask_watchpoint (bl->address, hw_wp_mask, |
dda83cd7 | 9703 | bl->watchpoint_type); |
348d480f PA |
9704 | } |
9705 | ||
3a292923 TT |
9706 | /* Implement the "resources_needed" method for masked hardware |
9707 | watchpoints. */ | |
348d480f | 9708 | |
3a292923 TT |
9709 | int |
9710 | masked_watchpoint::resources_needed (const struct bp_location *bl) | |
348d480f | 9711 | { |
3a292923 | 9712 | return target_masked_watch_num_registers (bl->address, hw_wp_mask); |
348d480f PA |
9713 | } |
9714 | ||
3a292923 TT |
9715 | /* Implement the "works_in_software_mode" method for masked hardware |
9716 | watchpoints. */ | |
348d480f | 9717 | |
3a292923 TT |
9718 | int |
9719 | masked_watchpoint::works_in_software_mode () const | |
348d480f PA |
9720 | { |
9721 | return 0; | |
9722 | } | |
9723 | ||
3a292923 TT |
9724 | /* Implement the "print_it" method for masked hardware |
9725 | watchpoints. */ | |
348d480f | 9726 | |
3a292923 TT |
9727 | enum print_stop_action |
9728 | masked_watchpoint::print_it (bpstat *bs) | |
348d480f PA |
9729 | { |
9730 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 9731 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9732 | |
9733 | /* Masked watchpoints have only one location. */ | |
9734 | gdb_assert (b->loc && b->loc->next == NULL); | |
9735 | ||
f303dbd6 PA |
9736 | annotate_watchpoint (b->number); |
9737 | maybe_print_thread_hit_breakpoint (uiout); | |
9738 | ||
348d480f PA |
9739 | switch (b->type) |
9740 | { | |
9741 | case bp_hardware_watchpoint: | |
112e8700 SM |
9742 | if (uiout->is_mi_like_p ()) |
9743 | uiout->field_string | |
9744 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9745 | break; |
9746 | ||
9747 | case bp_read_watchpoint: | |
112e8700 SM |
9748 | if (uiout->is_mi_like_p ()) |
9749 | uiout->field_string | |
9750 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9751 | break; |
9752 | ||
9753 | case bp_access_watchpoint: | |
112e8700 SM |
9754 | if (uiout->is_mi_like_p ()) |
9755 | uiout->field_string | |
9756 | ("reason", | |
348d480f PA |
9757 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
9758 | break; | |
9759 | default: | |
9760 | internal_error (__FILE__, __LINE__, | |
9761 | _("Invalid hardware watchpoint type.")); | |
9762 | } | |
9763 | ||
9764 | mention (b); | |
112e8700 | 9765 | uiout->text (_("\n\ |
9c06b0b4 TJB |
9766 | Check the underlying instruction at PC for the memory\n\ |
9767 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 9768 | uiout->text ("\n"); |
9c06b0b4 TJB |
9769 | |
9770 | /* More than one watchpoint may have been triggered. */ | |
9771 | return PRINT_UNKNOWN; | |
9772 | } | |
9773 | ||
3a292923 TT |
9774 | /* Implement the "print_one_detail" method for masked hardware |
9775 | watchpoints. */ | |
9c06b0b4 | 9776 | |
3a292923 TT |
9777 | void |
9778 | masked_watchpoint::print_one_detail (struct ui_out *uiout) const | |
9c06b0b4 TJB |
9779 | { |
9780 | /* Masked watchpoints have only one location. */ | |
3a292923 | 9781 | gdb_assert (loc && loc->next == NULL); |
9c06b0b4 | 9782 | |
112e8700 | 9783 | uiout->text ("\tmask "); |
3a292923 | 9784 | uiout->field_core_addr ("mask", loc->gdbarch, hw_wp_mask); |
112e8700 | 9785 | uiout->text ("\n"); |
9c06b0b4 TJB |
9786 | } |
9787 | ||
3a292923 TT |
9788 | /* Implement the "print_mention" method for masked hardware |
9789 | watchpoints. */ | |
9c06b0b4 | 9790 | |
3a292923 TT |
9791 | void |
9792 | masked_watchpoint::print_mention () | |
9c06b0b4 | 9793 | { |
79a45e25 | 9794 | struct ui_out *uiout = current_uiout; |
46b9c129 | 9795 | const char *tuple_name; |
9c06b0b4 | 9796 | |
3a292923 | 9797 | switch (type) |
9c06b0b4 TJB |
9798 | { |
9799 | case bp_hardware_watchpoint: | |
112e8700 | 9800 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 9801 | tuple_name = "wpt"; |
9c06b0b4 TJB |
9802 | break; |
9803 | case bp_read_watchpoint: | |
112e8700 | 9804 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 9805 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
9806 | break; |
9807 | case bp_access_watchpoint: | |
112e8700 | 9808 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 9809 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
9810 | break; |
9811 | default: | |
9812 | internal_error (__FILE__, __LINE__, | |
9813 | _("Invalid hardware watchpoint type.")); | |
9814 | } | |
9815 | ||
46b9c129 | 9816 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
3a292923 | 9817 | uiout->field_signed ("number", number); |
112e8700 | 9818 | uiout->text (": "); |
3a292923 | 9819 | uiout->field_string ("exp", exp_string.get ()); |
9c06b0b4 TJB |
9820 | } |
9821 | ||
3a292923 TT |
9822 | /* Implement the "print_recreate" method for masked hardware |
9823 | watchpoints. */ | |
9c06b0b4 | 9824 | |
3a292923 TT |
9825 | void |
9826 | masked_watchpoint::print_recreate (struct ui_file *fp) | |
9c06b0b4 | 9827 | { |
3a292923 | 9828 | switch (type) |
9c06b0b4 TJB |
9829 | { |
9830 | case bp_hardware_watchpoint: | |
6cb06a8c | 9831 | gdb_printf (fp, "watch"); |
9c06b0b4 TJB |
9832 | break; |
9833 | case bp_read_watchpoint: | |
6cb06a8c | 9834 | gdb_printf (fp, "rwatch"); |
9c06b0b4 TJB |
9835 | break; |
9836 | case bp_access_watchpoint: | |
6cb06a8c | 9837 | gdb_printf (fp, "awatch"); |
9c06b0b4 TJB |
9838 | break; |
9839 | default: | |
9840 | internal_error (__FILE__, __LINE__, | |
9841 | _("Invalid hardware watchpoint type.")); | |
9842 | } | |
9843 | ||
3a292923 TT |
9844 | gdb_printf (fp, " %s mask 0x%s", exp_string.get (), |
9845 | phex (hw_wp_mask, sizeof (CORE_ADDR))); | |
9846 | print_recreate_thread (this, fp); | |
9c06b0b4 TJB |
9847 | } |
9848 | ||
9c06b0b4 TJB |
9849 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ |
9850 | ||
f2478a7e | 9851 | static bool |
9c06b0b4 TJB |
9852 | is_masked_watchpoint (const struct breakpoint *b) |
9853 | { | |
3a292923 | 9854 | return dynamic_cast<const masked_watchpoint *> (b) != nullptr; |
9c06b0b4 TJB |
9855 | } |
9856 | ||
53a5351d | 9857 | /* accessflag: hw_write: watch write, |
dda83cd7 | 9858 | hw_read: watch read, |
53a5351d | 9859 | hw_access: watch access (read or write) */ |
c906108c | 9860 | static void |
bbc13ae3 | 9861 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 9862 | bool just_location, bool internal) |
c906108c | 9863 | { |
c1fc2657 | 9864 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 9865 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 9866 | struct value *result; |
bb9d5f81 | 9867 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
9868 | const char *exp_start = NULL; |
9869 | const char *exp_end = NULL; | |
9870 | const char *tok, *end_tok; | |
9c06b0b4 | 9871 | int toklen = -1; |
bbc13ae3 KS |
9872 | const char *cond_start = NULL; |
9873 | const char *cond_end = NULL; | |
c906108c | 9874 | enum bptype bp_type; |
37e4754d | 9875 | int thread = -1; |
9c06b0b4 TJB |
9876 | /* Flag to indicate whether we are going to use masks for |
9877 | the hardware watchpoint. */ | |
2e362716 | 9878 | bool use_mask = false; |
9c06b0b4 | 9879 | CORE_ADDR mask = 0; |
8a18382f | 9880 | int task = 0; |
c906108c | 9881 | |
37e4754d LM |
9882 | /* Make sure that we actually have parameters to parse. */ |
9883 | if (arg != NULL && arg[0] != '\0') | |
9884 | { | |
bbc13ae3 KS |
9885 | const char *value_start; |
9886 | ||
9887 | exp_end = arg + strlen (arg); | |
37e4754d | 9888 | |
9c06b0b4 TJB |
9889 | /* Look for "parameter value" pairs at the end |
9890 | of the arguments string. */ | |
bbc13ae3 | 9891 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
9892 | { |
9893 | /* Skip whitespace at the end of the argument list. */ | |
9894 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9895 | tok--; | |
9896 | ||
9897 | /* Find the beginning of the last token. | |
9898 | This is the value of the parameter. */ | |
9899 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9900 | tok--; | |
9901 | value_start = tok + 1; | |
9902 | ||
9903 | /* Skip whitespace. */ | |
9904 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9905 | tok--; | |
9906 | ||
9907 | end_tok = tok; | |
9908 | ||
9909 | /* Find the beginning of the second to last token. | |
9910 | This is the parameter itself. */ | |
9911 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9912 | tok--; | |
9913 | tok++; | |
9914 | toklen = end_tok - tok + 1; | |
9915 | ||
61012eef | 9916 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 9917 | { |
5d5658a1 | 9918 | struct thread_info *thr; |
9c06b0b4 TJB |
9919 | /* At this point we've found a "thread" token, which means |
9920 | the user is trying to set a watchpoint that triggers | |
9921 | only in a specific thread. */ | |
5d5658a1 | 9922 | const char *endp; |
37e4754d | 9923 | |
9c06b0b4 TJB |
9924 | if (thread != -1) |
9925 | error(_("You can specify only one thread.")); | |
37e4754d | 9926 | |
9c06b0b4 | 9927 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 9928 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 9929 | |
5d5658a1 | 9930 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 9931 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 9932 | invalid_thread_id_error (value_start); |
9c06b0b4 | 9933 | |
5d5658a1 | 9934 | thread = thr->global_num; |
9c06b0b4 | 9935 | } |
8a18382f TT |
9936 | else if (toklen == 4 && startswith (tok, "task")) |
9937 | { | |
9938 | char *tmp; | |
9939 | ||
9940 | task = strtol (value_start, &tmp, 0); | |
9941 | if (tmp == value_start) | |
9942 | error (_("Junk after task keyword.")); | |
9943 | if (!valid_task_id (task)) | |
9944 | error (_("Unknown task %d."), task); | |
9945 | } | |
61012eef | 9946 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
9947 | { |
9948 | /* We've found a "mask" token, which means the user wants to | |
9949 | create a hardware watchpoint that is going to have the mask | |
9950 | facility. */ | |
9951 | struct value *mask_value, *mark; | |
37e4754d | 9952 | |
9c06b0b4 TJB |
9953 | if (use_mask) |
9954 | error(_("You can specify only one mask.")); | |
37e4754d | 9955 | |
2e362716 | 9956 | use_mask = just_location = true; |
37e4754d | 9957 | |
9c06b0b4 TJB |
9958 | mark = value_mark (); |
9959 | mask_value = parse_to_comma_and_eval (&value_start); | |
9960 | mask = value_as_address (mask_value); | |
9961 | value_free_to_mark (mark); | |
9962 | } | |
9963 | else | |
9964 | /* We didn't recognize what we found. We should stop here. */ | |
9965 | break; | |
37e4754d | 9966 | |
9c06b0b4 TJB |
9967 | /* Truncate the string and get rid of the "parameter value" pair before |
9968 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 9969 | exp_end = tok; |
9c06b0b4 | 9970 | } |
37e4754d | 9971 | } |
bbc13ae3 KS |
9972 | else |
9973 | exp_end = arg; | |
37e4754d | 9974 | |
bbc13ae3 KS |
9975 | /* Parse the rest of the arguments. From here on out, everything |
9976 | is in terms of a newly allocated string instead of the original | |
9977 | ARG. */ | |
81b1e71c TT |
9978 | std::string expression (arg, exp_end - arg); |
9979 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
9980 | innermost_block_tracker tracker; |
9981 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 9982 | exp_end = arg; |
fa8a61dc TT |
9983 | /* Remove trailing whitespace from the expression before saving it. |
9984 | This makes the eventual display of the expression string a bit | |
9985 | prettier. */ | |
9986 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
9987 | --exp_end; | |
9988 | ||
65d79d4b | 9989 | /* Checking if the expression is not constant. */ |
4d01a485 | 9990 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
9991 | { |
9992 | int len; | |
9993 | ||
9994 | len = exp_end - exp_start; | |
9995 | while (len > 0 && isspace (exp_start[len - 1])) | |
9996 | len--; | |
9997 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
9998 | } | |
9999 | ||
699bd4cf | 10000 | exp_valid_block = tracker.block (); |
b926417a | 10001 | struct value *mark = value_mark (); |
850645cf | 10002 | struct value *val_as_value = nullptr; |
1eaebe02 TT |
10003 | fetch_subexp_value (exp.get (), exp->op.get (), &val_as_value, &result, NULL, |
10004 | just_location); | |
06a64a0b | 10005 | |
850645cf | 10006 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10007 | { |
850645cf TT |
10008 | saved_bitpos = value_bitpos (val_as_value); |
10009 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10010 | } |
10011 | ||
850645cf | 10012 | value_ref_ptr val; |
06a64a0b TT |
10013 | if (just_location) |
10014 | { | |
9c06b0b4 TJB |
10015 | int ret; |
10016 | ||
06a64a0b | 10017 | exp_valid_block = NULL; |
850645cf | 10018 | val = release_value (value_addr (result)); |
06a64a0b | 10019 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10020 | |
10021 | if (use_mask) | |
10022 | { | |
850645cf | 10023 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10024 | mask); |
10025 | if (ret == -1) | |
10026 | error (_("This target does not support masked watchpoints.")); | |
10027 | else if (ret == -2) | |
10028 | error (_("Invalid mask or memory region.")); | |
10029 | } | |
06a64a0b | 10030 | } |
850645cf TT |
10031 | else if (val_as_value != NULL) |
10032 | val = release_value (val_as_value); | |
c906108c | 10033 | |
f1735a53 TT |
10034 | tok = skip_spaces (arg); |
10035 | end_tok = skip_to_space (tok); | |
c906108c SS |
10036 | |
10037 | toklen = end_tok - tok; | |
10038 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10039 | { | |
10040 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10041 | innermost_block_tracker if_tracker; |
10042 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10043 | |
10044 | /* The watchpoint expression may not be local, but the condition | |
10045 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10046 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10047 | |
c906108c SS |
10048 | cond_end = tok; |
10049 | } | |
10050 | if (*tok) | |
8a3fe4f8 | 10051 | error (_("Junk at end of command.")); |
c906108c | 10052 | |
441d7c93 PA |
10053 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10054 | ||
10055 | /* Save this because create_internal_breakpoint below invalidates | |
10056 | 'wp_frame'. */ | |
10057 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10058 | |
10059 | /* If the expression is "local", then set up a "watchpoint scope" | |
10060 | breakpoint at the point where we've left the scope of the watchpoint | |
10061 | expression. Create the scope breakpoint before the watchpoint, so | |
10062 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10063 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10064 | { |
441d7c93 PA |
10065 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10066 | ||
10067 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10068 | { |
441d7c93 PA |
10069 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10070 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10071 | ||
24b21115 | 10072 | scope_breakpoint |
441d7c93 | 10073 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10074 | bp_watchpoint_scope, |
10075 | &momentary_breakpoint_ops); | |
d983da9c | 10076 | |
441d7c93 PA |
10077 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10078 | wp_frame = NULL; | |
10079 | ||
edb3359d | 10080 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10081 | |
edb3359d DJ |
10082 | /* Automatically delete the breakpoint when it hits. */ |
10083 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10084 | |
edb3359d | 10085 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10086 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10087 | |
edb3359d | 10088 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10089 | scope_breakpoint->loc->gdbarch = caller_arch; |
10090 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10091 | scope_breakpoint->loc->address |
a6d9a66e UW |
10092 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10093 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10094 | scope_breakpoint->type); |
10095 | } | |
d983da9c DJ |
10096 | } |
10097 | ||
e8369a73 AB |
10098 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10099 | watchpoints here even if hardware watchpoints are turned off, a call | |
10100 | to update_watchpoint later in this function will cause the type to | |
10101 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10102 | ||
10103 | if (accessflag == hw_read) | |
10104 | bp_type = bp_read_watchpoint; | |
10105 | else if (accessflag == hw_access) | |
10106 | bp_type = bp_access_watchpoint; | |
10107 | else | |
10108 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10109 | |
3a292923 | 10110 | std::unique_ptr<watchpoint> w; |
348d480f | 10111 | if (use_mask) |
3a292923 | 10112 | w.reset (new masked_watchpoint ()); |
348d480f | 10113 | else |
3a292923 TT |
10114 | w.reset (new watchpoint ()); |
10115 | init_raw_breakpoint_without_location (w.get (), nullptr, bp_type, | |
10116 | &vtable_breakpoint_ops); | |
10117 | ||
c1fc2657 | 10118 | w->thread = thread; |
8a18382f | 10119 | w->task = task; |
c1fc2657 SM |
10120 | w->disposition = disp_donttouch; |
10121 | w->pspace = current_program_space; | |
b22e99fd | 10122 | w->exp = std::move (exp); |
3a5c3e22 PA |
10123 | w->exp_valid_block = exp_valid_block; |
10124 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10125 | if (just_location) |
10126 | { | |
850645cf TT |
10127 | struct type *t = value_type (val.get ()); |
10128 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10129 | |
43cc5389 | 10130 | w->exp_string_reparse |
a4c50be3 | 10131 | = current_language->watch_location_expression (t, addr); |
06a64a0b | 10132 | |
8579fd13 AB |
10133 | w->exp_string = xstrprintf ("-location %.*s", |
10134 | (int) (exp_end - exp_start), exp_start); | |
06a64a0b TT |
10135 | } |
10136 | else | |
a4c50be3 | 10137 | w->exp_string.reset (savestring (exp_start, exp_end - exp_start)); |
9c06b0b4 TJB |
10138 | |
10139 | if (use_mask) | |
10140 | { | |
3a5c3e22 | 10141 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10142 | } |
10143 | else | |
10144 | { | |
3a5c3e22 | 10145 | w->val = val; |
bb9d5f81 PP |
10146 | w->val_bitpos = saved_bitpos; |
10147 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10148 | w->val_valid = true; |
9c06b0b4 | 10149 | } |
77b06cd7 | 10150 | |
c906108c | 10151 | if (cond_start) |
6f781ee3 | 10152 | w->cond_string.reset (savestring (cond_start, cond_end - cond_start)); |
c906108c | 10153 | else |
c1fc2657 | 10154 | w->cond_string = 0; |
c5aa993b | 10155 | |
441d7c93 | 10156 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10157 | { |
441d7c93 | 10158 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10159 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10160 | } |
c906108c | 10161 | else |
f6bc2008 | 10162 | { |
3a5c3e22 PA |
10163 | w->watchpoint_frame = null_frame_id; |
10164 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10165 | } |
c906108c | 10166 | |
d983da9c | 10167 | if (scope_breakpoint != NULL) |
c906108c | 10168 | { |
d983da9c DJ |
10169 | /* The scope breakpoint is related to the watchpoint. We will |
10170 | need to act on them together. */ | |
c1fc2657 | 10171 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10172 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10173 | } |
d983da9c | 10174 | |
06a64a0b TT |
10175 | if (!just_location) |
10176 | value_free_to_mark (mark); | |
2d134ed3 | 10177 | |
b270e6f9 TT |
10178 | /* Finally update the new watchpoint. This creates the locations |
10179 | that should be inserted. */ | |
10180 | update_watchpoint (w.get (), 1); | |
a9634178 | 10181 | |
b270e6f9 | 10182 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10183 | } |
10184 | ||
e09342b5 | 10185 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10186 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10187 | |
c906108c | 10188 | static int |
a6535de1 | 10189 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10190 | { |
10191 | int found_memory_cnt = 0; | |
10192 | ||
10193 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10194 | if (!can_use_hw_watchpoints) |
c906108c | 10195 | return 0; |
c5aa993b | 10196 | |
a6535de1 TT |
10197 | gdb_assert (!vals.empty ()); |
10198 | struct value *head = vals[0].get (); | |
10199 | ||
5c44784c JM |
10200 | /* Make sure that the value of the expression depends only upon |
10201 | memory contents, and values computed from them within GDB. If we | |
10202 | find any register references or function calls, we can't use a | |
10203 | hardware watchpoint. | |
10204 | ||
10205 | The idea here is that evaluating an expression generates a series | |
10206 | of values, one holding the value of every subexpression. (The | |
10207 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10208 | a*b+c.) GDB's values hold almost enough information to establish | |
10209 | the criteria given above --- they identify memory lvalues, | |
10210 | register lvalues, computed values, etcetera. So we can evaluate | |
10211 | the expression, and then scan the chain of values that leaves | |
10212 | behind to decide whether we can detect any possible change to the | |
10213 | expression's final value using only hardware watchpoints. | |
10214 | ||
10215 | However, I don't think that the values returned by inferior | |
10216 | function calls are special in any way. So this function may not | |
10217 | notice that an expression involving an inferior function call | |
10218 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10219 | for (const value_ref_ptr &iter : vals) |
c906108c | 10220 | { |
a6535de1 TT |
10221 | struct value *v = iter.get (); |
10222 | ||
5c44784c | 10223 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10224 | { |
8464be76 DJ |
10225 | if (v != head && value_lazy (v)) |
10226 | /* A lazy memory lvalue in the chain is one that GDB never | |
10227 | needed to fetch; we either just used its address (e.g., | |
10228 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10229 | in `a,b'). This doesn't apply to HEAD; if that is | |
10230 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10231 | ; |
53a5351d | 10232 | else |
5c44784c JM |
10233 | { |
10234 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 10235 | it with hardware watchpoints. */ |
df407dfe | 10236 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10237 | |
10238 | /* We only watch structs and arrays if user asked for it | |
10239 | explicitly, never if they just happen to appear in a | |
10240 | middle of some value chain. */ | |
10241 | if (v == head | |
78134374 SM |
10242 | || (vtype->code () != TYPE_CODE_STRUCT |
10243 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10244 | { |
42ae5230 | 10245 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10246 | int len; |
10247 | int num_regs; | |
10248 | ||
a9634178 | 10249 | len = (target_exact_watchpoints |
e09342b5 TJB |
10250 | && is_scalar_type_recursive (vtype))? |
10251 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10252 | |
e09342b5 TJB |
10253 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10254 | if (!num_regs) | |
2e70b7b9 MS |
10255 | return 0; |
10256 | else | |
e09342b5 | 10257 | found_memory_cnt += num_regs; |
2e70b7b9 | 10258 | } |
5c44784c | 10259 | } |
c5aa993b | 10260 | } |
5086187c AC |
10261 | else if (VALUE_LVAL (v) != not_lval |
10262 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10263 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10264 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10265 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10266 | } |
10267 | ||
10268 | /* The expression itself looks suitable for using a hardware | |
10269 | watchpoint, but give the target machine a chance to reject it. */ | |
10270 | return found_memory_cnt; | |
10271 | } | |
10272 | ||
8b93c638 | 10273 | void |
2e362716 | 10274 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10275 | { |
84f4c1fe | 10276 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10277 | } |
10278 | ||
a15a5258 AB |
10279 | /* Options for the watch, awatch, and rwatch commands. */ |
10280 | ||
10281 | struct watch_options | |
10282 | { | |
10283 | /* For -location. */ | |
10284 | bool location = false; | |
10285 | }; | |
10286 | ||
10287 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
10288 | ||
10289 | Historically GDB always accepted both '-location' and '-l' flags for | |
10290 | these commands (both flags being synonyms). When converting to the | |
10291 | newer option scheme only '-location' is added here. That's fine (for | |
10292 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
10293 | accepted, so '-l', '-loc', are now all accepted. | |
10294 | ||
10295 | What this means is that, if in the future, we add any new flag here | |
10296 | that starts with '-l' then this will break backward compatibility, so | |
10297 | please, don't do that! */ | |
10298 | ||
10299 | static const gdb::option::option_def watch_option_defs[] = { | |
10300 | gdb::option::flag_option_def<watch_options> { | |
10301 | "location", | |
10302 | [] (watch_options *opt) { return &opt->location; }, | |
10303 | N_("\ | |
10304 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
10305 | -l can be used as a short form of -location."), | |
10306 | }, | |
10307 | }; | |
10308 | ||
10309 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
10310 | commands. */ | |
10311 | ||
10312 | static gdb::option::option_def_group | |
10313 | make_watch_options_def_group (watch_options *opts) | |
10314 | { | |
10315 | return {{watch_option_defs}, opts}; | |
10316 | } | |
10317 | ||
06a64a0b TT |
10318 | /* A helper function that looks for the "-location" argument and then |
10319 | calls watch_command_1. */ | |
10320 | ||
10321 | static void | |
0b39b52e | 10322 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 10323 | { |
a15a5258 AB |
10324 | watch_options opts; |
10325 | auto grp = make_watch_options_def_group (&opts); | |
10326 | gdb::option::process_options | |
10327 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
10328 | if (arg != nullptr && *arg == '\0') | |
10329 | arg = nullptr; | |
10330 | ||
10331 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
10332 | } | |
06a64a0b | 10333 | |
a15a5258 AB |
10334 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
10335 | static void | |
10336 | watch_command_completer (struct cmd_list_element *ignore, | |
10337 | completion_tracker &tracker, | |
10338 | const char *text, const char * /*word*/) | |
10339 | { | |
10340 | const auto group = make_watch_options_def_group (nullptr); | |
10341 | if (gdb::option::complete_options | |
10342 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
10343 | return; | |
06a64a0b | 10344 | |
a15a5258 AB |
10345 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
10346 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 10347 | } |
8926118c | 10348 | |
c5aa993b | 10349 | static void |
0b39b52e | 10350 | watch_command (const char *arg, int from_tty) |
c906108c | 10351 | { |
06a64a0b | 10352 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10353 | } |
10354 | ||
8b93c638 | 10355 | void |
2e362716 | 10356 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10357 | { |
84f4c1fe | 10358 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10359 | } |
8926118c | 10360 | |
c5aa993b | 10361 | static void |
0b39b52e | 10362 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10363 | { |
06a64a0b | 10364 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10365 | } |
10366 | ||
8b93c638 | 10367 | void |
2e362716 | 10368 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10369 | { |
84f4c1fe | 10370 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10371 | } |
8926118c | 10372 | |
c5aa993b | 10373 | static void |
0b39b52e | 10374 | awatch_command (const char *arg, int from_tty) |
c906108c | 10375 | { |
06a64a0b | 10376 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10377 | } |
c906108c | 10378 | \f |
c5aa993b | 10379 | |
cfc31633 PA |
10380 | /* Data for the FSM that manages the until(location)/advance commands |
10381 | in infcmd.c. Here because it uses the mechanisms of | |
10382 | breakpoints. */ | |
c906108c | 10383 | |
46e3ed7f | 10384 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10385 | { |
46e3ed7f | 10386 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10387 | int thread; |
10388 | ||
df631783 PA |
10389 | /* The breakpoint set at the return address in the caller frame, |
10390 | plus breakpoints at all the destination locations. */ | |
10391 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 10392 | |
46e3ed7f | 10393 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 10394 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
10395 | : thread_fsm (cmd_interp), |
10396 | thread (thread), | |
df631783 | 10397 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
10398 | { |
10399 | } | |
cfc31633 | 10400 | |
46e3ed7f TT |
10401 | void clean_up (struct thread_info *thread) override; |
10402 | bool should_stop (struct thread_info *thread) override; | |
10403 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10404 | }; |
10405 | ||
cfc31633 PA |
10406 | /* Implementation of the 'should_stop' FSM method for the |
10407 | until(location)/advance commands. */ | |
10408 | ||
46e3ed7f TT |
10409 | bool |
10410 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10411 | { |
df631783 PA |
10412 | for (const breakpoint_up &bp : breakpoints) |
10413 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
10414 | bp.get ()) != NULL) | |
10415 | { | |
10416 | set_finished (); | |
10417 | break; | |
10418 | } | |
cfc31633 | 10419 | |
46e3ed7f | 10420 | return true; |
cfc31633 PA |
10421 | } |
10422 | ||
10423 | /* Implementation of the 'clean_up' FSM method for the | |
10424 | until(location)/advance commands. */ | |
10425 | ||
46e3ed7f TT |
10426 | void |
10427 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10428 | { |
cfc31633 | 10429 | /* Clean up our temporary breakpoints. */ |
df631783 | 10430 | breakpoints.clear (); |
46e3ed7f | 10431 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
10432 | } |
10433 | ||
10434 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10435 | until(location)/advance commands. */ | |
10436 | ||
46e3ed7f TT |
10437 | enum async_reply_reason |
10438 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10439 | { |
10440 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
10441 | } |
10442 | ||
c906108c | 10443 | void |
f2fc3015 | 10444 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 10445 | { |
8556afb4 PA |
10446 | struct frame_info *frame; |
10447 | struct gdbarch *frame_gdbarch; | |
10448 | struct frame_id stack_frame_id; | |
10449 | struct frame_id caller_frame_id; | |
186c406b TT |
10450 | int thread; |
10451 | struct thread_info *tp; | |
c906108c | 10452 | |
70509625 | 10453 | clear_proceed_status (0); |
c906108c SS |
10454 | |
10455 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10456 | this function. */ |
c5aa993b | 10457 | |
ffc2605c | 10458 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 10459 | |
6c5b2ebe PA |
10460 | std::vector<symtab_and_line> sals |
10461 | = (last_displayed_sal_is_valid () | |
10462 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
10463 | get_last_displayed_symtab (), | |
10464 | get_last_displayed_line ()) | |
10465 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 10466 | NULL, NULL, 0)); |
c5aa993b | 10467 | |
df631783 | 10468 | if (sals.empty ()) |
8a3fe4f8 | 10469 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10470 | |
c906108c | 10471 | if (*arg) |
8a3fe4f8 | 10472 | error (_("Junk at end of arguments.")); |
c5aa993b | 10473 | |
186c406b | 10474 | tp = inferior_thread (); |
5d5658a1 | 10475 | thread = tp->global_num; |
186c406b | 10476 | |
8556afb4 PA |
10477 | /* Note linespec handling above invalidates the frame chain. |
10478 | Installing a breakpoint also invalidates the frame chain (as it | |
10479 | may need to switch threads), so do any frame handling before | |
10480 | that. */ | |
10481 | ||
10482 | frame = get_selected_frame (NULL); | |
10483 | frame_gdbarch = get_frame_arch (frame); | |
10484 | stack_frame_id = get_stack_frame_id (frame); | |
10485 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 10486 | |
ae66c1fc EZ |
10487 | /* Keep within the current frame, or in frames called by the current |
10488 | one. */ | |
edb3359d | 10489 | |
df631783 | 10490 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
10491 | |
10492 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
10493 | ||
883bc8d1 | 10494 | if (frame_id_p (caller_frame_id)) |
c906108c | 10495 | { |
883bc8d1 | 10496 | struct symtab_and_line sal2; |
cfc31633 | 10497 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
10498 | |
10499 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
10500 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 10501 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
10502 | |
10503 | breakpoint_up caller_breakpoint | |
10504 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
10505 | caller_frame_id, bp_until); | |
10506 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 10507 | |
883bc8d1 | 10508 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 10509 | lj_deleter.emplace (thread); |
c906108c | 10510 | } |
c5aa993b | 10511 | |
c70a6932 JK |
10512 | /* set_momentary_breakpoint could invalidate FRAME. */ |
10513 | frame = NULL; | |
10514 | ||
df631783 PA |
10515 | /* If the user told us to continue until a specified location, we |
10516 | don't specify a frame at which we need to stop. Otherwise, | |
10517 | specify the selected frame, because we want to stop only at the | |
10518 | very same frame. */ | |
10519 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
10520 | ||
10521 | for (symtab_and_line &sal : sals) | |
10522 | { | |
10523 | resolve_sal_pc (&sal); | |
10524 | ||
10525 | breakpoint_up location_breakpoint | |
10526 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
10527 | stop_frame_id, bp_until); | |
10528 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
10529 | } | |
883bc8d1 | 10530 | |
573269a8 LS |
10531 | tp->set_thread_fsm |
10532 | (std::unique_ptr<thread_fsm> | |
10533 | (new until_break_fsm (command_interp (), tp->global_num, | |
10534 | std::move (breakpoints)))); | |
f107f563 | 10535 | |
5419bdae TT |
10536 | if (lj_deleter) |
10537 | lj_deleter->release (); | |
f107f563 | 10538 | |
cfc31633 | 10539 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 10540 | } |
ae66c1fc | 10541 | |
9ac4176b | 10542 | void |
28010a5d PA |
10543 | init_ada_exception_breakpoint (struct breakpoint *b, |
10544 | struct gdbarch *gdbarch, | |
10545 | struct symtab_and_line sal, | |
f2fc3015 | 10546 | const char *addr_string, |
c0a91b2b | 10547 | const struct breakpoint_ops *ops, |
28010a5d | 10548 | int tempflag, |
349774ef | 10549 | int enabled, |
28010a5d | 10550 | int from_tty) |
f7f9143b | 10551 | { |
f7f9143b JB |
10552 | if (from_tty) |
10553 | { | |
5af949e3 UW |
10554 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
10555 | if (!loc_gdbarch) | |
10556 | loc_gdbarch = gdbarch; | |
10557 | ||
6c95b8df PA |
10558 | describe_other_breakpoints (loc_gdbarch, |
10559 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b | 10560 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
dda83cd7 SM |
10561 | version for exception catchpoints, because two catchpoints |
10562 | used for different exception names will use the same address. | |
10563 | In this case, a "breakpoint ... also set at..." warning is | |
10564 | unproductive. Besides, the warning phrasing is also a bit | |
10565 | inappropriate, we should use the word catchpoint, and tell | |
10566 | the user what type of catchpoint it is. The above is good | |
10567 | enough for now, though. */ | |
f7f9143b JB |
10568 | } |
10569 | ||
f06f1252 | 10570 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
f7f9143b | 10571 | |
349774ef | 10572 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 10573 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
10574 | b->location = string_to_event_location (&addr_string, |
10575 | language_def (language_ada)); | |
f7f9143b | 10576 | b->language = language_ada; |
f7f9143b JB |
10577 | } |
10578 | ||
c906108c SS |
10579 | \f |
10580 | ||
81b1e71c | 10581 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
10582 | |
10583 | static int | |
81b1e71c | 10584 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 10585 | { |
81b1e71c TT |
10586 | uintptr_t ua = (uintptr_t) a; |
10587 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 10588 | |
81b1e71c | 10589 | if (a->number < b->number) |
8a2c437b | 10590 | return -1; |
81b1e71c | 10591 | else if (a->number > b->number) |
8a2c437b TT |
10592 | return 1; |
10593 | ||
10594 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
10595 | the number 0. */ | |
10596 | if (ua < ub) | |
10597 | return -1; | |
94b0e70d | 10598 | return ua > ub ? 1 : 0; |
8a2c437b TT |
10599 | } |
10600 | ||
80f8a6eb | 10601 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10602 | |
10603 | static void | |
0b39b52e | 10604 | clear_command (const char *arg, int from_tty) |
c906108c | 10605 | { |
c906108c | 10606 | int default_match; |
c906108c | 10607 | |
6c5b2ebe PA |
10608 | std::vector<symtab_and_line> decoded_sals; |
10609 | symtab_and_line last_sal; | |
10610 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
10611 | if (arg) |
10612 | { | |
6c5b2ebe PA |
10613 | decoded_sals |
10614 | = decode_line_with_current_source (arg, | |
10615 | (DECODE_LINE_FUNFIRSTLINE | |
10616 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 10617 | default_match = 0; |
6c5b2ebe | 10618 | sals = decoded_sals; |
c906108c SS |
10619 | } |
10620 | else | |
10621 | { | |
1bfeeb0f JL |
10622 | /* Set sal's line, symtab, pc, and pspace to the values |
10623 | corresponding to the last call to print_frame_info. If the | |
10624 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 10625 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 10626 | if (last_sal.symtab == 0) |
8a3fe4f8 | 10627 | error (_("No source file specified.")); |
c906108c | 10628 | |
c906108c | 10629 | default_match = 1; |
6c5b2ebe | 10630 | sals = last_sal; |
c906108c SS |
10631 | } |
10632 | ||
4a64f543 MS |
10633 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10634 | seems, because all existing breakpoints typically have both | |
10635 | file/line and pc set. So, if clear is given file/line, we can | |
10636 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10637 | |
10638 | We only support clearing given the address explicitly | |
10639 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10640 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10641 | due to optimization, all in one block. |
4a64f543 MS |
10642 | |
10643 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10644 | PC corresponding to the same file:line, the breakpoint won't |
10645 | be cleared. We probably can still clear the breakpoint, but | |
10646 | since the other PC value is never presented to user, user | |
10647 | can only find it by guessing, and it does not seem important | |
10648 | to support that. */ | |
10649 | ||
4a64f543 MS |
10650 | /* For each line spec given, delete bps which correspond to it. Do |
10651 | it in two passes, solely to preserve the current behavior that | |
10652 | from_tty is forced true if we delete more than one | |
10653 | breakpoint. */ | |
c906108c | 10654 | |
81b1e71c | 10655 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 10656 | for (const auto &sal : sals) |
c906108c | 10657 | { |
05cba821 JK |
10658 | const char *sal_fullname; |
10659 | ||
c906108c | 10660 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
10661 | If line given (pc == 0), clear all bpts on specified line. |
10662 | If defaulting, clear all bpts on default line | |
10663 | or at default pc. | |
c5aa993b | 10664 | |
dda83cd7 | 10665 | defaulting sal.pc != 0 tests to do |
c5aa993b | 10666 | |
dda83cd7 SM |
10667 | 0 1 pc |
10668 | 1 1 pc _and_ line | |
10669 | 0 0 line | |
10670 | 1 0 <can't happen> */ | |
c906108c | 10671 | |
05cba821 JK |
10672 | sal_fullname = (sal.symtab == NULL |
10673 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 10674 | |
4a64f543 | 10675 | /* Find all matching breakpoints and add them to 'found'. */ |
43892fdf | 10676 | for (breakpoint *b : all_breakpoints ()) |
c5aa993b | 10677 | { |
0d381245 | 10678 | int match = 0; |
4a64f543 | 10679 | /* Are we going to delete b? */ |
a5c69b1e EL |
10680 | if (b->type != bp_none && !is_watchpoint (b) |
10681 | && user_breakpoint_p (b)) | |
0d381245 | 10682 | { |
40cb8ca5 | 10683 | for (bp_location *loc : b->locations ()) |
0d381245 | 10684 | { |
f8eba3c6 TT |
10685 | /* If the user specified file:line, don't allow a PC |
10686 | match. This matches historical gdb behavior. */ | |
10687 | int pc_match = (!sal.explicit_line | |
10688 | && sal.pc | |
10689 | && (loc->pspace == sal.pspace) | |
10690 | && (loc->address == sal.pc) | |
10691 | && (!section_is_overlay (loc->section) | |
10692 | || loc->section == sal.section)); | |
4aac40c8 TT |
10693 | int line_match = 0; |
10694 | ||
10695 | if ((default_match || sal.explicit_line) | |
2f202fde | 10696 | && loc->symtab != NULL |
05cba821 | 10697 | && sal_fullname != NULL |
4aac40c8 | 10698 | && sal.pspace == loc->pspace |
05cba821 JK |
10699 | && loc->line_number == sal.line |
10700 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
10701 | sal_fullname) == 0) | |
10702 | line_match = 1; | |
4aac40c8 | 10703 | |
0d381245 VP |
10704 | if (pc_match || line_match) |
10705 | { | |
10706 | match = 1; | |
10707 | break; | |
10708 | } | |
10709 | } | |
10710 | } | |
10711 | ||
10712 | if (match) | |
81b1e71c | 10713 | found.push_back (b); |
c906108c | 10714 | } |
80f8a6eb | 10715 | } |
8a2c437b | 10716 | |
80f8a6eb | 10717 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 10718 | if (found.empty ()) |
80f8a6eb MS |
10719 | { |
10720 | if (arg) | |
8a3fe4f8 | 10721 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10722 | else |
8a3fe4f8 | 10723 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10724 | } |
c906108c | 10725 | |
8a2c437b | 10726 | /* Remove duplicates from the vec. */ |
81b1e71c | 10727 | std::sort (found.begin (), found.end (), |
b926417a | 10728 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10729 | { |
b926417a | 10730 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
10731 | }); |
10732 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 10733 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 10734 | { |
b926417a | 10735 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
10736 | }), |
10737 | found.end ()); | |
8a2c437b | 10738 | |
81b1e71c | 10739 | if (found.size () > 1) |
4a64f543 | 10740 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10741 | if (from_tty) |
a3f17187 | 10742 | { |
81b1e71c | 10743 | if (found.size () == 1) |
6cb06a8c | 10744 | gdb_printf (_("Deleted breakpoint ")); |
a3f17187 | 10745 | else |
6cb06a8c | 10746 | gdb_printf (_("Deleted breakpoints ")); |
a3f17187 | 10747 | } |
d6e956e5 | 10748 | |
81b1e71c | 10749 | for (breakpoint *iter : found) |
80f8a6eb | 10750 | { |
c5aa993b | 10751 | if (from_tty) |
6cb06a8c | 10752 | gdb_printf ("%d ", iter->number); |
81b1e71c | 10753 | delete_breakpoint (iter); |
c906108c | 10754 | } |
80f8a6eb | 10755 | if (from_tty) |
a11ac3b3 | 10756 | gdb_putc ('\n'); |
c906108c SS |
10757 | } |
10758 | \f | |
10759 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10760 | all breakpoints that are marked for deletion, whether hit or not. | |
10761 | This is called after any breakpoint is hit, or after errors. */ | |
10762 | ||
10763 | void | |
313f3b21 | 10764 | breakpoint_auto_delete (bpstat *bs) |
c906108c | 10765 | { |
c906108c | 10766 | for (; bs; bs = bs->next) |
f431efe5 PA |
10767 | if (bs->breakpoint_at |
10768 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10769 | && bs->stop) |
f431efe5 | 10770 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10771 | |
1428b37a | 10772 | for (breakpoint *b : all_breakpoints_safe ()) |
b5de0fa7 | 10773 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b | 10774 | delete_breakpoint (b); |
c906108c SS |
10775 | } |
10776 | ||
4a64f543 | 10777 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 10778 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
10779 | bl_address_is_meaningful says), secondarily by ordering first |
10780 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 10781 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
10782 | |
10783 | static int | |
39ef2f62 | 10784 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 10785 | { |
876fa593 | 10786 | if (a->address != b->address) |
39ef2f62 | 10787 | return a->address < b->address; |
876fa593 | 10788 | |
dea2aa5f LM |
10789 | /* Sort locations at the same address by their pspace number, keeping |
10790 | locations of the same inferior (in a multi-inferior environment) | |
10791 | grouped. */ | |
10792 | ||
10793 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 10794 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 10795 | |
876fa593 | 10796 | /* Sort permanent breakpoints first. */ |
1a853c52 | 10797 | if (a->permanent != b->permanent) |
39ef2f62 | 10798 | return a->permanent > b->permanent; |
876fa593 | 10799 | |
7f32a4d5 PA |
10800 | /* Sort by type in order to make duplicate determination easier. |
10801 | See update_global_location_list. This is kept in sync with | |
10802 | breakpoint_locations_match. */ | |
10803 | if (a->loc_type < b->loc_type) | |
10804 | return true; | |
10805 | ||
10806 | /* Likewise, for range-breakpoints, sort by length. */ | |
10807 | if (a->loc_type == bp_loc_hardware_breakpoint | |
10808 | && b->loc_type == bp_loc_hardware_breakpoint | |
10809 | && a->length < b->length) | |
10810 | return true; | |
10811 | ||
c56a97f9 JK |
10812 | /* Make the internal GDB representation stable across GDB runs |
10813 | where A and B memory inside GDB can differ. Breakpoint locations of | |
10814 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
10815 | |
10816 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 10817 | return a->owner->number < b->owner->number; |
876fa593 | 10818 | |
39ef2f62 | 10819 | return a < b; |
876fa593 JK |
10820 | } |
10821 | ||
f5336ca5 PA |
10822 | /* Set bp_locations_placed_address_before_address_max and |
10823 | bp_locations_shadow_len_after_address_max according to the current | |
10824 | content of the bp_locations array. */ | |
f7545552 TT |
10825 | |
10826 | static void | |
f5336ca5 | 10827 | bp_locations_target_extensions_update (void) |
f7545552 | 10828 | { |
f5336ca5 PA |
10829 | bp_locations_placed_address_before_address_max = 0; |
10830 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 | 10831 | |
48d7020b | 10832 | for (bp_location *bl : all_bp_locations ()) |
876fa593 JK |
10833 | { |
10834 | CORE_ADDR start, end, addr; | |
10835 | ||
10836 | if (!bp_location_has_shadow (bl)) | |
10837 | continue; | |
10838 | ||
10839 | start = bl->target_info.placed_address; | |
10840 | end = start + bl->target_info.shadow_len; | |
10841 | ||
10842 | gdb_assert (bl->address >= start); | |
10843 | addr = bl->address - start; | |
f5336ca5 PA |
10844 | if (addr > bp_locations_placed_address_before_address_max) |
10845 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
10846 | |
10847 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10848 | ||
10849 | gdb_assert (bl->address < end); | |
10850 | addr = end - bl->address; | |
f5336ca5 PA |
10851 | if (addr > bp_locations_shadow_len_after_address_max) |
10852 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 10853 | } |
f7545552 TT |
10854 | } |
10855 | ||
1e4d1764 YQ |
10856 | /* Download tracepoint locations if they haven't been. */ |
10857 | ||
10858 | static void | |
10859 | download_tracepoint_locations (void) | |
10860 | { | |
dd2e65cc | 10861 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 10862 | |
5ed8105e | 10863 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 10864 | |
f6d17b2b | 10865 | for (breakpoint *b : all_tracepoints ()) |
1e4d1764 YQ |
10866 | { |
10867 | struct tracepoint *t; | |
f2a8bc8a | 10868 | int bp_location_downloaded = 0; |
1e4d1764 | 10869 | |
7ed2c994 | 10870 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
10871 | ? !may_insert_fast_tracepoints |
10872 | : !may_insert_tracepoints)) | |
10873 | continue; | |
10874 | ||
dd2e65cc YQ |
10875 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
10876 | { | |
10877 | if (target_can_download_tracepoint ()) | |
10878 | can_download_tracepoint = TRIBOOL_TRUE; | |
10879 | else | |
10880 | can_download_tracepoint = TRIBOOL_FALSE; | |
10881 | } | |
10882 | ||
10883 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
10884 | break; | |
10885 | ||
40cb8ca5 | 10886 | for (bp_location *bl : b->locations ()) |
7ed2c994 YQ |
10887 | { |
10888 | /* In tracepoint, locations are _never_ duplicated, so | |
10889 | should_be_inserted is equivalent to | |
10890 | unduplicated_should_be_inserted. */ | |
10891 | if (!should_be_inserted (bl) || bl->inserted) | |
10892 | continue; | |
1e4d1764 | 10893 | |
7ed2c994 | 10894 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 10895 | |
7ed2c994 | 10896 | target_download_tracepoint (bl); |
1e4d1764 | 10897 | |
7ed2c994 | 10898 | bl->inserted = 1; |
f2a8bc8a | 10899 | bp_location_downloaded = 1; |
7ed2c994 YQ |
10900 | } |
10901 | t = (struct tracepoint *) b; | |
10902 | t->number_on_target = b->number; | |
f2a8bc8a | 10903 | if (bp_location_downloaded) |
76727919 | 10904 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 10905 | } |
1e4d1764 YQ |
10906 | } |
10907 | ||
934709f0 PW |
10908 | /* Swap the insertion/duplication state between two locations. */ |
10909 | ||
10910 | static void | |
10911 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
10912 | { | |
10913 | const int left_inserted = left->inserted; | |
10914 | const int left_duplicate = left->duplicate; | |
b775012e | 10915 | const int left_needs_update = left->needs_update; |
934709f0 PW |
10916 | const struct bp_target_info left_target_info = left->target_info; |
10917 | ||
1e4d1764 YQ |
10918 | /* Locations of tracepoints can never be duplicated. */ |
10919 | if (is_tracepoint (left->owner)) | |
10920 | gdb_assert (!left->duplicate); | |
10921 | if (is_tracepoint (right->owner)) | |
10922 | gdb_assert (!right->duplicate); | |
10923 | ||
934709f0 PW |
10924 | left->inserted = right->inserted; |
10925 | left->duplicate = right->duplicate; | |
b775012e | 10926 | left->needs_update = right->needs_update; |
934709f0 PW |
10927 | left->target_info = right->target_info; |
10928 | right->inserted = left_inserted; | |
10929 | right->duplicate = left_duplicate; | |
b775012e | 10930 | right->needs_update = left_needs_update; |
934709f0 PW |
10931 | right->target_info = left_target_info; |
10932 | } | |
10933 | ||
b775012e LM |
10934 | /* Force the re-insertion of the locations at ADDRESS. This is called |
10935 | once a new/deleted/modified duplicate location is found and we are evaluating | |
10936 | conditions on the target's side. Such conditions need to be updated on | |
10937 | the target. */ | |
10938 | ||
10939 | static void | |
10940 | force_breakpoint_reinsertion (struct bp_location *bl) | |
10941 | { | |
b775012e LM |
10942 | CORE_ADDR address = 0; |
10943 | int pspace_num; | |
10944 | ||
10945 | address = bl->address; | |
10946 | pspace_num = bl->pspace->num; | |
10947 | ||
10948 | /* This is only meaningful if the target is | |
10949 | evaluating conditions and if the user has | |
10950 | opted for condition evaluation on the target's | |
10951 | side. */ | |
10952 | if (gdb_evaluates_breakpoint_condition_p () | |
10953 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
10954 | return; | |
10955 | ||
10956 | /* Flag all breakpoint locations with this address and | |
10957 | the same program space as the location | |
10958 | as "its condition has changed". We need to | |
10959 | update the conditions on the target's side. */ | |
e0d9a270 | 10960 | for (bp_location *loc : all_bp_locations_at_addr (address)) |
b775012e | 10961 | { |
b775012e LM |
10962 | if (!is_breakpoint (loc->owner) |
10963 | || pspace_num != loc->pspace->num) | |
10964 | continue; | |
10965 | ||
10966 | /* Flag the location appropriately. We use a different state to | |
10967 | let everyone know that we already updated the set of locations | |
10968 | with addr bl->address and program space bl->pspace. This is so | |
10969 | we don't have to keep calling these functions just to mark locations | |
10970 | that have already been marked. */ | |
10971 | loc->condition_changed = condition_updated; | |
10972 | ||
10973 | /* Free the agent expression bytecode as well. We will compute | |
10974 | it later on. */ | |
833177a4 | 10975 | loc->cond_bytecode.reset (); |
b775012e LM |
10976 | } |
10977 | } | |
7f32a4d5 | 10978 | |
44702360 PA |
10979 | /* Called whether new breakpoints are created, or existing breakpoints |
10980 | deleted, to update the global location list and recompute which | |
10981 | locations are duplicate of which. | |
b775012e | 10982 | |
04086b45 PA |
10983 | The INSERT_MODE flag determines whether locations may not, may, or |
10984 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
10985 | info. */ | |
b60e7edf | 10986 | |
0d381245 | 10987 | static void |
44702360 | 10988 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 10989 | { |
b775012e LM |
10990 | /* Last breakpoint location address that was marked for update. */ |
10991 | CORE_ADDR last_addr = 0; | |
10992 | /* Last breakpoint location program space that was marked for update. */ | |
10993 | int last_pspace_num = -1; | |
f7545552 | 10994 | |
2d134ed3 PA |
10995 | /* Used in the duplicates detection below. When iterating over all |
10996 | bp_locations, points to the first bp_location of a given address. | |
10997 | Breakpoints and watchpoints of different types are never | |
10998 | duplicates of each other. Keep one pointer for each type of | |
10999 | breakpoint/watchpoint, so we only need to loop over all locations | |
11000 | once. */ | |
11001 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11002 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11003 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11004 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11005 | |
f5336ca5 PA |
11006 | /* Saved former bp_locations array which we compare against the newly |
11007 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
5d51cd5d SM |
11008 | std::vector<bp_location *> old_locations = std::move (bp_locations); |
11009 | bp_locations.clear (); | |
876fa593 | 11010 | |
43892fdf | 11011 | for (breakpoint *b : all_breakpoints ()) |
40cb8ca5 | 11012 | for (bp_location *loc : b->locations ()) |
5d51cd5d | 11013 | bp_locations.push_back (loc); |
7f32a4d5 PA |
11014 | |
11015 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
11016 | breakpoint. Do this before deciding whether locations are | |
11017 | duplicates. Also do this before sorting because sorting order | |
11018 | depends on location type. */ | |
5d51cd5d SM |
11019 | for (bp_location *loc : bp_locations) |
11020 | if (!loc->inserted && should_be_inserted (loc)) | |
7f32a4d5 | 11021 | handle_automatic_hardware_breakpoints (loc); |
7f32a4d5 | 11022 | |
5d51cd5d | 11023 | std::sort (bp_locations.begin (), bp_locations.end (), |
39ef2f62 | 11024 | bp_location_is_less_than); |
876fa593 | 11025 | |
f5336ca5 | 11026 | bp_locations_target_extensions_update (); |
74960c60 | 11027 | |
4a64f543 MS |
11028 | /* Identify bp_location instances that are no longer present in the |
11029 | new list, and therefore should be freed. Note that it's not | |
11030 | necessary that those locations should be removed from inferior -- | |
11031 | if there's another location at the same address (previously | |
11032 | marked as duplicate), we don't need to remove/insert the | |
11033 | location. | |
876fa593 | 11034 | |
4a64f543 MS |
11035 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11036 | and former bp_location array state respectively. */ | |
876fa593 | 11037 | |
5d51cd5d SM |
11038 | size_t loc_i = 0; |
11039 | for (bp_location *old_loc : old_locations) | |
74960c60 | 11040 | { |
e5dd4106 | 11041 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11042 | not, we have to free it. */ |
c7d46a38 | 11043 | int found_object = 0; |
20874c92 VP |
11044 | /* Tells if the location should remain inserted in the target. */ |
11045 | int keep_in_target = 0; | |
11046 | int removed = 0; | |
876fa593 | 11047 | |
4a64f543 MS |
11048 | /* Skip LOCP entries which will definitely never be needed. |
11049 | Stop either at or being the one matching OLD_LOC. */ | |
5d51cd5d SM |
11050 | while (loc_i < bp_locations.size () |
11051 | && bp_locations[loc_i]->address < old_loc->address) | |
11052 | loc_i++; | |
c7d46a38 | 11053 | |
5d51cd5d SM |
11054 | for (size_t loc2_i = loc_i; |
11055 | (loc2_i < bp_locations.size () | |
11056 | && bp_locations[loc2_i]->address == old_loc->address); | |
11057 | loc2_i++) | |
c7d46a38 | 11058 | { |
b775012e LM |
11059 | /* Check if this is a new/duplicated location or a duplicated |
11060 | location that had its condition modified. If so, we want to send | |
11061 | its condition to the target if evaluation of conditions is taking | |
11062 | place there. */ | |
5d51cd5d | 11063 | if (bp_locations[loc2_i]->condition_changed == condition_modified |
b775012e LM |
11064 | && (last_addr != old_loc->address |
11065 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11066 | { |
5d51cd5d | 11067 | force_breakpoint_reinsertion (bp_locations[loc2_i]); |
b775012e | 11068 | last_pspace_num = old_loc->pspace->num; |
c7d46a38 | 11069 | } |
b775012e | 11070 | |
5d51cd5d | 11071 | if (bp_locations[loc2_i] == old_loc) |
b775012e | 11072 | found_object = 1; |
c7d46a38 | 11073 | } |
74960c60 | 11074 | |
b775012e LM |
11075 | /* We have already handled this address, update it so that we don't |
11076 | have to go through updates again. */ | |
11077 | last_addr = old_loc->address; | |
11078 | ||
11079 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11080 | if (!found_object) | |
11081 | force_breakpoint_reinsertion (old_loc); | |
11082 | ||
4a64f543 MS |
11083 | /* If this location is no longer present, and inserted, look if |
11084 | there's maybe a new location at the same address. If so, | |
11085 | mark that one inserted, and don't remove this one. This is | |
11086 | needed so that we don't have a time window where a breakpoint | |
11087 | at certain location is not inserted. */ | |
74960c60 | 11088 | |
876fa593 | 11089 | if (old_loc->inserted) |
0d381245 | 11090 | { |
4a64f543 MS |
11091 | /* If the location is inserted now, we might have to remove |
11092 | it. */ | |
74960c60 | 11093 | |
876fa593 | 11094 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11095 | { |
4a64f543 MS |
11096 | /* The location is still present in the location list, |
11097 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11098 | keep_in_target = 1; |
74960c60 VP |
11099 | } |
11100 | else | |
11101 | { | |
b775012e LM |
11102 | /* This location still exists, but it won't be kept in the |
11103 | target since it may have been disabled. We proceed to | |
11104 | remove its target-side condition. */ | |
11105 | ||
4a64f543 MS |
11106 | /* The location is either no longer present, or got |
11107 | disabled. See if there's another location at the | |
11108 | same address, in which case we don't need to remove | |
11109 | this one from the target. */ | |
876fa593 | 11110 | |
2bdf28a0 | 11111 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11112 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11113 | { |
5d51cd5d SM |
11114 | for (size_t loc2_i = loc_i; |
11115 | (loc2_i < bp_locations.size () | |
11116 | && bp_locations[loc2_i]->address == old_loc->address); | |
11117 | loc2_i++) | |
876fa593 | 11118 | { |
5d51cd5d | 11119 | bp_location *loc2 = bp_locations[loc2_i]; |
876fa593 | 11120 | |
7f32a4d5 PA |
11121 | if (loc2 == old_loc) |
11122 | continue; | |
11123 | ||
2d134ed3 | 11124 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11125 | { |
85d721b8 PA |
11126 | /* Read watchpoint locations are switched to |
11127 | access watchpoints, if the former are not | |
11128 | supported, but the latter are. */ | |
11129 | if (is_hardware_watchpoint (old_loc->owner)) | |
11130 | { | |
11131 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11132 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11133 | } | |
11134 | ||
934709f0 PW |
11135 | /* loc2 is a duplicated location. We need to check |
11136 | if it should be inserted in case it will be | |
11137 | unduplicated. */ | |
7f32a4d5 | 11138 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 11139 | { |
934709f0 | 11140 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11141 | keep_in_target = 1; |
11142 | break; | |
11143 | } | |
876fa593 JK |
11144 | } |
11145 | } | |
11146 | } | |
74960c60 VP |
11147 | } |
11148 | ||
20874c92 VP |
11149 | if (!keep_in_target) |
11150 | { | |
834c0d03 | 11151 | if (remove_breakpoint (old_loc)) |
20874c92 | 11152 | { |
4a64f543 MS |
11153 | /* This is just about all we can do. We could keep |
11154 | this location on the global list, and try to | |
11155 | remove it next time, but there's no particular | |
11156 | reason why we will succeed next time. | |
20874c92 | 11157 | |
4a64f543 MS |
11158 | Note that at this point, old_loc->owner is still |
11159 | valid, as delete_breakpoint frees the breakpoint | |
11160 | only after calling us. */ | |
6cb06a8c TT |
11161 | gdb_printf (_("warning: Error removing " |
11162 | "breakpoint %d\n"), | |
11163 | old_loc->owner->number); | |
20874c92 VP |
11164 | } |
11165 | removed = 1; | |
11166 | } | |
0d381245 | 11167 | } |
74960c60 VP |
11168 | |
11169 | if (!found_object) | |
1c5cfe86 | 11170 | { |
fbea99ea | 11171 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11172 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11173 | { |
db82e815 PA |
11174 | /* This location was removed from the target. In |
11175 | non-stop mode, a race condition is possible where | |
11176 | we've removed a breakpoint, but stop events for that | |
11177 | breakpoint are already queued and will arrive later. | |
11178 | We apply an heuristic to be able to distinguish such | |
11179 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11180 | breakpoint location for a bit, and will retire it | |
11181 | after we see some number of events. The theory here | |
11182 | is that reporting of events should, "on the average", | |
11183 | be fair, so after a while we'll see events from all | |
11184 | threads that have anything of interest, and no longer | |
11185 | need to keep this breakpoint location around. We | |
11186 | don't hold locations forever so to reduce chances of | |
11187 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11188 | SIGTRAP. | |
11189 | ||
11190 | The heuristic failing can be disastrous on | |
11191 | decr_pc_after_break targets. | |
11192 | ||
11193 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11194 | if we fail to recognize a late breakpoint SIGTRAP, | |
11195 | because events_till_retirement has reached 0 too | |
11196 | soon, we'll fail to do the PC adjustment, and report | |
11197 | a random SIGTRAP to the user. When the user resumes | |
11198 | the inferior, it will most likely immediately crash | |
2dec564e | 11199 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11200 | corrupted, because of being resumed e.g., in the |
11201 | middle of a multi-byte instruction, or skipped a | |
11202 | one-byte instruction. This was actually seen happen | |
11203 | on native x86-linux, and should be less rare on | |
11204 | targets that do not support new thread events, like | |
11205 | remote, due to the heuristic depending on | |
11206 | thread_count. | |
11207 | ||
11208 | Mistaking a random SIGTRAP for a breakpoint trap | |
11209 | causes similar symptoms (PC adjustment applied when | |
11210 | it shouldn't), but then again, playing with SIGTRAPs | |
11211 | behind the debugger's back is asking for trouble. | |
11212 | ||
11213 | Since hardware watchpoint traps are always | |
11214 | distinguishable from other traps, so we don't need to | |
11215 | apply keep hardware watchpoint moribund locations | |
11216 | around. We simply always ignore hardware watchpoint | |
11217 | traps we can no longer explain. */ | |
11218 | ||
5b6d1e4f PA |
11219 | process_stratum_target *proc_target = nullptr; |
11220 | for (inferior *inf : all_inferiors ()) | |
11221 | if (inf->pspace == old_loc->pspace) | |
11222 | { | |
11223 | proc_target = inf->process_target (); | |
11224 | break; | |
11225 | } | |
11226 | if (proc_target != nullptr) | |
11227 | old_loc->events_till_retirement | |
11228 | = 3 * (thread_count (proc_target) + 1); | |
11229 | else | |
11230 | old_loc->events_till_retirement = 1; | |
876fa593 | 11231 | old_loc->owner = NULL; |
20874c92 | 11232 | |
1123588c | 11233 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11234 | } |
11235 | else | |
f431efe5 PA |
11236 | { |
11237 | old_loc->owner = NULL; | |
11238 | decref_bp_location (&old_loc); | |
11239 | } | |
20874c92 | 11240 | } |
74960c60 | 11241 | } |
1c5cfe86 | 11242 | |
348d480f PA |
11243 | /* Rescan breakpoints at the same address and section, marking the |
11244 | first one as "first" and any others as "duplicates". This is so | |
11245 | that the bpt instruction is only inserted once. If we have a | |
11246 | permanent breakpoint at the same place as BPT, make that one the | |
11247 | official one, and the rest as duplicates. Permanent breakpoints | |
11248 | are sorted first for the same address. | |
11249 | ||
11250 | Do the same for hardware watchpoints, but also considering the | |
11251 | watchpoint's type (regular/access/read) and length. */ | |
11252 | ||
11253 | bp_loc_first = NULL; | |
11254 | wp_loc_first = NULL; | |
11255 | awp_loc_first = NULL; | |
11256 | rwp_loc_first = NULL; | |
40cb8ca5 | 11257 | |
48d7020b | 11258 | for (bp_location *loc : all_bp_locations ()) |
348d480f PA |
11259 | { |
11260 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11261 | non-NULL. */ | |
348d480f | 11262 | struct bp_location **loc_first_p; |
43892fdf | 11263 | breakpoint *b = loc->owner; |
348d480f | 11264 | |
6f380991 | 11265 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11266 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11267 | /* Don't detect duplicate for tracepoint locations because they are |
11268 | never duplicated. See the comments in field `duplicate' of | |
11269 | `struct bp_location'. */ | |
348d480f | 11270 | || is_tracepoint (b)) |
b775012e LM |
11271 | { |
11272 | /* Clear the condition modification flag. */ | |
11273 | loc->condition_changed = condition_unchanged; | |
11274 | continue; | |
11275 | } | |
348d480f | 11276 | |
348d480f PA |
11277 | if (b->type == bp_hardware_watchpoint) |
11278 | loc_first_p = &wp_loc_first; | |
11279 | else if (b->type == bp_read_watchpoint) | |
11280 | loc_first_p = &rwp_loc_first; | |
11281 | else if (b->type == bp_access_watchpoint) | |
11282 | loc_first_p = &awp_loc_first; | |
11283 | else | |
11284 | loc_first_p = &bp_loc_first; | |
11285 | ||
11286 | if (*loc_first_p == NULL | |
11287 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11288 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11289 | { | |
11290 | *loc_first_p = loc; | |
11291 | loc->duplicate = 0; | |
b775012e LM |
11292 | |
11293 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11294 | { | |
11295 | loc->needs_update = 1; | |
11296 | /* Clear the condition modification flag. */ | |
11297 | loc->condition_changed = condition_unchanged; | |
11298 | } | |
348d480f PA |
11299 | continue; |
11300 | } | |
11301 | ||
934709f0 PW |
11302 | |
11303 | /* This and the above ensure the invariant that the first location | |
11304 | is not duplicated, and is the inserted one. | |
11305 | All following are marked as duplicated, and are not inserted. */ | |
11306 | if (loc->inserted) | |
11307 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
11308 | loc->duplicate = 1; |
11309 | ||
b775012e LM |
11310 | /* Clear the condition modification flag. */ |
11311 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
11312 | } |
11313 | ||
a25a5a45 | 11314 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 11315 | { |
04086b45 | 11316 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
11317 | insert_breakpoint_locations (); |
11318 | else | |
11319 | { | |
44702360 PA |
11320 | /* Even though the caller told us to not insert new |
11321 | locations, we may still need to update conditions on the | |
11322 | target's side of breakpoints that were already inserted | |
11323 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
11324 | only update conditions for locations that are marked |
11325 | "needs_update". */ | |
11326 | update_inserted_breakpoint_locations (); | |
11327 | } | |
11328 | } | |
348d480f | 11329 | |
04086b45 | 11330 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 11331 | download_tracepoint_locations (); |
348d480f PA |
11332 | } |
11333 | ||
11334 | void | |
11335 | breakpoint_retire_moribund (void) | |
11336 | { | |
1123588c TT |
11337 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
11338 | { | |
11339 | struct bp_location *loc = moribund_locations[ix]; | |
11340 | if (--(loc->events_till_retirement) == 0) | |
11341 | { | |
11342 | decref_bp_location (&loc); | |
11343 | unordered_remove (moribund_locations, ix); | |
11344 | --ix; | |
11345 | } | |
11346 | } | |
348d480f PA |
11347 | } |
11348 | ||
11349 | static void | |
44702360 | 11350 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 11351 | { |
348d480f | 11352 | |
a70b8144 | 11353 | try |
492d29ea PA |
11354 | { |
11355 | update_global_location_list (insert_mode); | |
11356 | } | |
230d2906 | 11357 | catch (const gdb_exception_error &e) |
492d29ea PA |
11358 | { |
11359 | } | |
348d480f PA |
11360 | } |
11361 | ||
11362 | /* Clear BKP from a BPS. */ | |
11363 | ||
11364 | static void | |
313f3b21 | 11365 | bpstat_remove_bp_location (bpstat *bps, struct breakpoint *bpt) |
348d480f | 11366 | { |
313f3b21 | 11367 | bpstat *bs; |
348d480f PA |
11368 | |
11369 | for (bs = bps; bs; bs = bs->next) | |
11370 | if (bs->breakpoint_at == bpt) | |
11371 | { | |
11372 | bs->breakpoint_at = NULL; | |
11373 | bs->old_val = NULL; | |
11374 | /* bs->commands will be freed later. */ | |
11375 | } | |
11376 | } | |
11377 | ||
11378 | /* Callback for iterate_over_threads. */ | |
11379 | static int | |
11380 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
11381 | { | |
9a3c8263 | 11382 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
11383 | |
11384 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
11385 | return 0; | |
11386 | } | |
11387 | ||
11388 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
11389 | callbacks. */ | |
11390 | ||
11391 | static void | |
11392 | say_where (struct breakpoint *b) | |
11393 | { | |
11394 | struct value_print_options opts; | |
11395 | ||
11396 | get_user_print_options (&opts); | |
11397 | ||
11398 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
11399 | single string. */ | |
11400 | if (b->loc == NULL) | |
11401 | { | |
f00aae0f KS |
11402 | /* For pending locations, the output differs slightly based |
11403 | on b->extra_string. If this is non-NULL, it contains either | |
11404 | a condition or dprintf arguments. */ | |
11405 | if (b->extra_string == NULL) | |
11406 | { | |
6cb06a8c TT |
11407 | gdb_printf (_(" (%s) pending."), |
11408 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
11409 | } |
11410 | else if (b->type == bp_dprintf) | |
11411 | { | |
6cb06a8c TT |
11412 | gdb_printf (_(" (%s,%s) pending."), |
11413 | event_location_to_string (b->location.get ()), | |
11414 | b->extra_string.get ()); | |
f00aae0f KS |
11415 | } |
11416 | else | |
11417 | { | |
6cb06a8c TT |
11418 | gdb_printf (_(" (%s %s) pending."), |
11419 | event_location_to_string (b->location.get ()), | |
11420 | b->extra_string.get ()); | |
f00aae0f | 11421 | } |
348d480f PA |
11422 | } |
11423 | else | |
11424 | { | |
2f202fde | 11425 | if (opts.addressprint || b->loc->symtab == NULL) |
6cb06a8c TT |
11426 | gdb_printf (" at %ps", |
11427 | styled_string (address_style.style (), | |
11428 | paddress (b->loc->gdbarch, | |
11429 | b->loc->address))); | |
2f202fde | 11430 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
11431 | { |
11432 | /* If there is a single location, we can print the location | |
11433 | more nicely. */ | |
11434 | if (b->loc->next == NULL) | |
0bb296cb | 11435 | { |
6a831f06 PA |
11436 | const char *filename |
11437 | = symtab_to_filename_for_display (b->loc->symtab); | |
6cb06a8c TT |
11438 | gdb_printf (": file %ps, line %d.", |
11439 | styled_string (file_name_style.style (), | |
11440 | filename), | |
11441 | b->loc->line_number); | |
0bb296cb | 11442 | } |
f8eba3c6 TT |
11443 | else |
11444 | /* This is not ideal, but each location may have a | |
11445 | different file name, and this at least reflects the | |
11446 | real situation somewhat. */ | |
6cb06a8c TT |
11447 | gdb_printf (": %s.", |
11448 | event_location_to_string (b->location.get ())); | |
f8eba3c6 | 11449 | } |
348d480f PA |
11450 | |
11451 | if (b->loc->next) | |
11452 | { | |
11453 | struct bp_location *loc = b->loc; | |
11454 | int n = 0; | |
11455 | for (; loc; loc = loc->next) | |
11456 | ++n; | |
6cb06a8c | 11457 | gdb_printf (" (%d locations)", n); |
348d480f PA |
11458 | } |
11459 | } | |
11460 | } | |
11461 | ||
40cb8ca5 SM |
11462 | /* See breakpoint.h. */ |
11463 | ||
9be25986 | 11464 | bp_location_range breakpoint::locations () |
40cb8ca5 | 11465 | { |
9be25986 | 11466 | return bp_location_range (this->loc); |
40cb8ca5 SM |
11467 | } |
11468 | ||
2060206e PA |
11469 | static struct bp_location * |
11470 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 11471 | { |
5f486660 | 11472 | return new bp_location (self); |
348d480f PA |
11473 | } |
11474 | ||
4c6a92b1 TT |
11475 | struct bp_location * |
11476 | breakpoint::allocate_location () | |
11477 | { | |
11478 | return new bp_location (this); | |
11479 | } | |
11480 | ||
2060206e PA |
11481 | static void |
11482 | base_breakpoint_re_set (struct breakpoint *b) | |
11483 | { | |
11484 | /* Nothing to re-set. */ | |
11485 | } | |
11486 | ||
11487 | #define internal_error_pure_virtual_called() \ | |
11488 | gdb_assert_not_reached ("pure virtual function called") | |
11489 | ||
11490 | static int | |
11491 | base_breakpoint_insert_location (struct bp_location *bl) | |
11492 | { | |
11493 | internal_error_pure_virtual_called (); | |
11494 | } | |
11495 | ||
4c6a92b1 TT |
11496 | int |
11497 | breakpoint::insert_location (struct bp_location *bl) | |
11498 | { | |
11499 | internal_error_pure_virtual_called (); | |
11500 | } | |
11501 | ||
2060206e | 11502 | static int |
73971819 PA |
11503 | base_breakpoint_remove_location (struct bp_location *bl, |
11504 | enum remove_bp_reason reason) | |
2060206e PA |
11505 | { |
11506 | internal_error_pure_virtual_called (); | |
11507 | } | |
11508 | ||
4c6a92b1 TT |
11509 | int |
11510 | breakpoint::remove_location (struct bp_location *bl, | |
11511 | enum remove_bp_reason reason) | |
11512 | { | |
11513 | internal_error_pure_virtual_called (); | |
11514 | } | |
11515 | ||
2060206e PA |
11516 | static int |
11517 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 11518 | const address_space *aspace, |
09ac7c10 | 11519 | CORE_ADDR bp_addr, |
c272a98c | 11520 | const target_waitstatus &ws) |
2060206e PA |
11521 | { |
11522 | internal_error_pure_virtual_called (); | |
11523 | } | |
11524 | ||
4c6a92b1 TT |
11525 | int |
11526 | breakpoint::breakpoint_hit (const struct bp_location *bl, | |
11527 | const address_space *aspace, | |
11528 | CORE_ADDR bp_addr, | |
11529 | const target_waitstatus &ws) | |
11530 | { | |
11531 | internal_error_pure_virtual_called (); | |
11532 | } | |
11533 | ||
2060206e | 11534 | static void |
313f3b21 | 11535 | base_breakpoint_check_status (bpstat *bs) |
2060206e PA |
11536 | { |
11537 | /* Always stop. */ | |
11538 | } | |
11539 | ||
11540 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
11541 | errors. */ | |
11542 | ||
11543 | static int | |
11544 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
11545 | { | |
11546 | internal_error_pure_virtual_called (); | |
11547 | } | |
11548 | ||
4c6a92b1 TT |
11549 | int |
11550 | breakpoint::works_in_software_mode () const | |
11551 | { | |
11552 | internal_error_pure_virtual_called (); | |
11553 | } | |
11554 | ||
2060206e PA |
11555 | /* A "resources_needed" breakpoint_ops method that just internal |
11556 | errors. */ | |
11557 | ||
11558 | static int | |
11559 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
11560 | { | |
11561 | internal_error_pure_virtual_called (); | |
11562 | } | |
11563 | ||
4c6a92b1 TT |
11564 | int |
11565 | breakpoint::resources_needed (const struct bp_location *bl) | |
11566 | { | |
11567 | internal_error_pure_virtual_called (); | |
11568 | } | |
11569 | ||
2060206e | 11570 | static enum print_stop_action |
313f3b21 | 11571 | base_breakpoint_print_it (bpstat *bs) |
2060206e PA |
11572 | { |
11573 | internal_error_pure_virtual_called (); | |
11574 | } | |
11575 | ||
4c6a92b1 TT |
11576 | enum print_stop_action |
11577 | breakpoint::print_it (bpstat *bs) | |
11578 | { | |
11579 | internal_error_pure_virtual_called (); | |
11580 | } | |
11581 | ||
c01e038b TT |
11582 | static bool |
11583 | base_breakpoint_print_one (struct breakpoint *, struct bp_location **) | |
11584 | { | |
11585 | return false; | |
11586 | } | |
11587 | ||
2060206e PA |
11588 | static void |
11589 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
11590 | struct ui_out *uiout) | |
11591 | { | |
11592 | /* nothing */ | |
11593 | } | |
11594 | ||
11595 | static void | |
11596 | base_breakpoint_print_mention (struct breakpoint *b) | |
11597 | { | |
11598 | internal_error_pure_virtual_called (); | |
11599 | } | |
11600 | ||
4c6a92b1 TT |
11601 | void |
11602 | breakpoint::print_mention () | |
11603 | { | |
11604 | internal_error_pure_virtual_called (); | |
11605 | } | |
11606 | ||
2060206e PA |
11607 | static void |
11608 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
11609 | { | |
11610 | internal_error_pure_virtual_called (); | |
11611 | } | |
11612 | ||
4c6a92b1 TT |
11613 | void |
11614 | breakpoint::print_recreate (struct ui_file *fp) | |
11615 | { | |
11616 | internal_error_pure_virtual_called (); | |
11617 | } | |
11618 | ||
983af33b | 11619 | static void |
f00aae0f | 11620 | base_breakpoint_create_sals_from_location |
626d2320 | 11621 | (struct event_location *location, |
f00aae0f KS |
11622 | struct linespec_result *canonical, |
11623 | enum bptype type_wanted) | |
983af33b SDJ |
11624 | { |
11625 | internal_error_pure_virtual_called (); | |
11626 | } | |
11627 | ||
11628 | static void | |
11629 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
11630 | struct linespec_result *c, | |
e1e01040 PA |
11631 | gdb::unique_xmalloc_ptr<char> cond_string, |
11632 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
11633 | enum bptype type_wanted, |
11634 | enum bpdisp disposition, | |
11635 | int thread, | |
11636 | int task, int ignore_count, | |
11637 | const struct breakpoint_ops *o, | |
11638 | int from_tty, int enabled, | |
44f238bb | 11639 | int internal, unsigned flags) |
983af33b SDJ |
11640 | { |
11641 | internal_error_pure_virtual_called (); | |
11642 | } | |
11643 | ||
6c5b2ebe | 11644 | static std::vector<symtab_and_line> |
f00aae0f | 11645 | base_breakpoint_decode_location (struct breakpoint *b, |
626d2320 | 11646 | struct event_location *location, |
6c5b2ebe | 11647 | struct program_space *search_pspace) |
983af33b SDJ |
11648 | { |
11649 | internal_error_pure_virtual_called (); | |
11650 | } | |
11651 | ||
4c6a92b1 TT |
11652 | std::vector<symtab_and_line> |
11653 | breakpoint::decode_location (struct event_location *location, | |
11654 | struct program_space *search_pspace) | |
11655 | { | |
11656 | internal_error_pure_virtual_called (); | |
11657 | } | |
11658 | ||
ab04a2af TT |
11659 | /* The default 'explains_signal' method. */ |
11660 | ||
47591c29 | 11661 | static int |
427cd150 | 11662 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 11663 | { |
47591c29 | 11664 | return 1; |
ab04a2af TT |
11665 | } |
11666 | ||
9d6e6e84 HZ |
11667 | /* The default "after_condition_true" method. */ |
11668 | ||
11669 | static void | |
313f3b21 | 11670 | base_breakpoint_after_condition_true (struct bpstat *bs) |
9d6e6e84 HZ |
11671 | { |
11672 | /* Nothing to do. */ | |
11673 | } | |
11674 | ||
ab04a2af | 11675 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 11676 | { |
2060206e PA |
11677 | base_breakpoint_allocate_location, |
11678 | base_breakpoint_re_set, | |
11679 | base_breakpoint_insert_location, | |
11680 | base_breakpoint_remove_location, | |
11681 | base_breakpoint_breakpoint_hit, | |
11682 | base_breakpoint_check_status, | |
11683 | base_breakpoint_resources_needed, | |
11684 | base_breakpoint_works_in_software_mode, | |
11685 | base_breakpoint_print_it, | |
c01e038b | 11686 | base_breakpoint_print_one, |
2060206e PA |
11687 | base_breakpoint_print_one_detail, |
11688 | base_breakpoint_print_mention, | |
983af33b | 11689 | base_breakpoint_print_recreate, |
5f700d83 | 11690 | base_breakpoint_create_sals_from_location, |
983af33b | 11691 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 11692 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
11693 | base_breakpoint_explains_signal, |
11694 | base_breakpoint_after_condition_true, | |
2060206e PA |
11695 | }; |
11696 | ||
4c6a92b1 TT |
11697 | struct breakpoint_ops vtable_breakpoint_ops = |
11698 | { | |
11699 | [] (struct breakpoint *b) { return b->allocate_location (); }, | |
11700 | [] (struct breakpoint *b) { b->re_set (); }, | |
11701 | [] (struct bp_location *l) | |
11702 | { | |
11703 | return l->owner->insert_location (l); | |
11704 | }, | |
11705 | [] (struct bp_location *l, enum remove_bp_reason reason) | |
11706 | { | |
11707 | return l->owner->remove_location (l, reason); | |
11708 | }, | |
11709 | [] (const struct bp_location *bl, | |
11710 | const address_space *aspace, | |
11711 | CORE_ADDR bp_addr, | |
11712 | const target_waitstatus &ws) | |
11713 | { | |
11714 | return bl->owner->breakpoint_hit (bl, aspace, bp_addr, ws); | |
11715 | }, | |
11716 | [] (struct bpstat *bs) { bs->breakpoint_at->check_status (bs); }, | |
11717 | [] (const struct bp_location *bl) | |
11718 | { return bl->owner->resources_needed (bl); }, | |
11719 | [] (const struct breakpoint *b) | |
11720 | { return b->works_in_software_mode (); }, | |
11721 | [] (struct bpstat *bs) | |
11722 | { return bs->breakpoint_at->print_it (bs); }, | |
11723 | [] (struct breakpoint *b, struct bp_location **bl) | |
11724 | { return b->print_one (bl); }, | |
11725 | [] (const struct breakpoint *b, struct ui_out *out) | |
11726 | { b->print_one_detail (out); }, | |
11727 | [] (struct breakpoint *b) { b->print_mention (); }, | |
11728 | [] (struct breakpoint *b, struct ui_file *fp) | |
11729 | { b->print_recreate (fp); }, | |
11730 | create_sals_from_location_default, | |
11731 | create_breakpoints_sal_default, | |
11732 | [] (struct breakpoint *b, | |
11733 | struct event_location *location, | |
11734 | struct program_space *search_pspace) | |
11735 | { return b->decode_location (location, search_pspace); }, | |
11736 | [] (struct breakpoint *b, enum gdb_signal s) | |
11737 | { return b->explains_signal (s); }, | |
11738 | [] (struct bpstat *bs) | |
11739 | { bs->breakpoint_at->after_condition_true (bs); } | |
11740 | }; | |
11741 | ||
2060206e PA |
11742 | /* Default breakpoint_ops methods. */ |
11743 | ||
11744 | static void | |
348d480f PA |
11745 | bkpt_re_set (struct breakpoint *b) |
11746 | { | |
06edf0c0 | 11747 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 11748 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 11749 | { |
f00aae0f | 11750 | /* Anything without a location can't be re-set. */ |
348d480f | 11751 | delete_breakpoint (b); |
06edf0c0 | 11752 | return; |
348d480f | 11753 | } |
06edf0c0 PA |
11754 | |
11755 | breakpoint_re_set_default (b); | |
348d480f PA |
11756 | } |
11757 | ||
2060206e | 11758 | static int |
348d480f PA |
11759 | bkpt_insert_location (struct bp_location *bl) |
11760 | { | |
cd6c3b4f YQ |
11761 | CORE_ADDR addr = bl->target_info.reqstd_address; |
11762 | ||
579c6ad9 | 11763 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
11764 | bl->target_info.placed_address = addr; |
11765 | ||
348d480f | 11766 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 11767 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 11768 | else |
7c16b83e | 11769 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
11770 | } |
11771 | ||
2060206e | 11772 | static int |
73971819 | 11773 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
11774 | { |
11775 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
11776 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
11777 | else | |
73971819 | 11778 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
11779 | } |
11780 | ||
2060206e | 11781 | static int |
348d480f | 11782 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 11783 | const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 11784 | const target_waitstatus &ws) |
348d480f | 11785 | { |
c272a98c SM |
11786 | if (ws.kind () != TARGET_WAITKIND_STOPPED |
11787 | || ws.sig () != GDB_SIGNAL_TRAP) | |
09ac7c10 TT |
11788 | return 0; |
11789 | ||
348d480f PA |
11790 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
11791 | aspace, bp_addr)) | |
11792 | return 0; | |
11793 | ||
11794 | if (overlay_debugging /* unmapped overlay section */ | |
11795 | && section_is_overlay (bl->section) | |
11796 | && !section_is_mapped (bl->section)) | |
11797 | return 0; | |
11798 | ||
11799 | return 1; | |
11800 | } | |
11801 | ||
cd1608cc PA |
11802 | static int |
11803 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 11804 | const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 11805 | const target_waitstatus &ws) |
cd1608cc PA |
11806 | { |
11807 | if (dprintf_style == dprintf_style_agent | |
11808 | && target_can_run_breakpoint_commands ()) | |
11809 | { | |
11810 | /* An agent-style dprintf never causes a stop. If we see a trap | |
11811 | for this address it must be for a breakpoint that happens to | |
11812 | be set at the same address. */ | |
11813 | return 0; | |
11814 | } | |
11815 | ||
11816 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
11817 | } | |
11818 | ||
2060206e | 11819 | static int |
348d480f PA |
11820 | bkpt_resources_needed (const struct bp_location *bl) |
11821 | { | |
11822 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
11823 | ||
11824 | return 1; | |
11825 | } | |
11826 | ||
2060206e | 11827 | static enum print_stop_action |
313f3b21 | 11828 | bkpt_print_it (bpstat *bs) |
348d480f | 11829 | { |
348d480f PA |
11830 | struct breakpoint *b; |
11831 | const struct bp_location *bl; | |
001c8c33 | 11832 | int bp_temp; |
79a45e25 | 11833 | struct ui_out *uiout = current_uiout; |
348d480f PA |
11834 | |
11835 | gdb_assert (bs->bp_location_at != NULL); | |
11836 | ||
b6433ede | 11837 | bl = bs->bp_location_at.get (); |
348d480f PA |
11838 | b = bs->breakpoint_at; |
11839 | ||
001c8c33 PA |
11840 | bp_temp = b->disposition == disp_del; |
11841 | if (bl->address != bl->requested_address) | |
11842 | breakpoint_adjustment_warning (bl->requested_address, | |
11843 | bl->address, | |
11844 | b->number, 1); | |
11845 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
11846 | maybe_print_thread_hit_breakpoint (uiout); |
11847 | ||
112e8700 | 11848 | if (uiout->is_mi_like_p ()) |
348d480f | 11849 | { |
112e8700 | 11850 | uiout->field_string ("reason", |
001c8c33 | 11851 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 11852 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 11853 | } |
6a831f06 PA |
11854 | if (bp_temp) |
11855 | uiout->message ("Temporary breakpoint %pF, ", | |
11856 | signed_field ("bkptno", b->number)); | |
11857 | else | |
11858 | uiout->message ("Breakpoint %pF, ", | |
11859 | signed_field ("bkptno", b->number)); | |
06edf0c0 | 11860 | |
001c8c33 | 11861 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
11862 | } |
11863 | ||
2060206e | 11864 | static void |
06edf0c0 PA |
11865 | bkpt_print_mention (struct breakpoint *b) |
11866 | { | |
112e8700 | 11867 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
11868 | return; |
11869 | ||
11870 | switch (b->type) | |
11871 | { | |
11872 | case bp_breakpoint: | |
11873 | case bp_gnu_ifunc_resolver: | |
11874 | if (b->disposition == disp_del) | |
6cb06a8c | 11875 | gdb_printf (_("Temporary breakpoint")); |
06edf0c0 | 11876 | else |
6cb06a8c TT |
11877 | gdb_printf (_("Breakpoint")); |
11878 | gdb_printf (_(" %d"), b->number); | |
06edf0c0 | 11879 | if (b->type == bp_gnu_ifunc_resolver) |
6cb06a8c | 11880 | gdb_printf (_(" at gnu-indirect-function resolver")); |
06edf0c0 PA |
11881 | break; |
11882 | case bp_hardware_breakpoint: | |
6cb06a8c | 11883 | gdb_printf (_("Hardware assisted breakpoint %d"), b->number); |
06edf0c0 | 11884 | break; |
e7e0cddf | 11885 | case bp_dprintf: |
6cb06a8c | 11886 | gdb_printf (_("Dprintf %d"), b->number); |
e7e0cddf | 11887 | break; |
06edf0c0 PA |
11888 | } |
11889 | ||
11890 | say_where (b); | |
11891 | } | |
11892 | ||
2060206e | 11893 | static void |
06edf0c0 PA |
11894 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
11895 | { | |
11896 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
6cb06a8c | 11897 | gdb_printf (fp, "tbreak"); |
06edf0c0 | 11898 | else if (tp->type == bp_breakpoint) |
6cb06a8c | 11899 | gdb_printf (fp, "break"); |
06edf0c0 PA |
11900 | else if (tp->type == bp_hardware_breakpoint |
11901 | && tp->disposition == disp_del) | |
6cb06a8c | 11902 | gdb_printf (fp, "thbreak"); |
06edf0c0 | 11903 | else if (tp->type == bp_hardware_breakpoint) |
6cb06a8c | 11904 | gdb_printf (fp, "hbreak"); |
06edf0c0 PA |
11905 | else |
11906 | internal_error (__FILE__, __LINE__, | |
11907 | _("unhandled breakpoint type %d"), (int) tp->type); | |
11908 | ||
6cb06a8c TT |
11909 | gdb_printf (fp, " %s", |
11910 | event_location_to_string (tp->location.get ())); | |
f00aae0f KS |
11911 | |
11912 | /* Print out extra_string if this breakpoint is pending. It might | |
11913 | contain, for example, conditions that were set by the user. */ | |
11914 | if (tp->loc == NULL && tp->extra_string != NULL) | |
6cb06a8c | 11915 | gdb_printf (fp, " %s", tp->extra_string.get ()); |
f00aae0f | 11916 | |
dd11a36c | 11917 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
11918 | } |
11919 | ||
6c5b2ebe | 11920 | static std::vector<symtab_and_line> |
f00aae0f | 11921 | bkpt_decode_location (struct breakpoint *b, |
626d2320 | 11922 | struct event_location *location, |
6c5b2ebe | 11923 | struct program_space *search_pspace) |
983af33b | 11924 | { |
6c5b2ebe | 11925 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
11926 | } |
11927 | ||
06edf0c0 PA |
11928 | /* Virtual table for internal breakpoints. */ |
11929 | ||
11930 | static void | |
11931 | internal_bkpt_re_set (struct breakpoint *b) | |
11932 | { | |
11933 | switch (b->type) | |
11934 | { | |
11935 | /* Delete overlay event and longjmp master breakpoints; they | |
11936 | will be reset later by breakpoint_re_set. */ | |
11937 | case bp_overlay_event: | |
11938 | case bp_longjmp_master: | |
11939 | case bp_std_terminate_master: | |
11940 | case bp_exception_master: | |
11941 | delete_breakpoint (b); | |
11942 | break; | |
11943 | ||
11944 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 11945 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
11946 | case bp_shlib_event: |
11947 | ||
11948 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
11949 | it is set up, we do not want to touch it. */ | |
11950 | case bp_thread_event: | |
11951 | break; | |
11952 | } | |
11953 | } | |
11954 | ||
11955 | static void | |
313f3b21 | 11956 | internal_bkpt_check_status (bpstat *bs) |
06edf0c0 | 11957 | { |
a9b3a50f PA |
11958 | if (bs->breakpoint_at->type == bp_shlib_event) |
11959 | { | |
11960 | /* If requested, stop when the dynamic linker notifies GDB of | |
11961 | events. This allows the user to get control and place | |
11962 | breakpoints in initializer routines for dynamically loaded | |
11963 | objects (among other things). */ | |
11964 | bs->stop = stop_on_solib_events; | |
11965 | bs->print = stop_on_solib_events; | |
11966 | } | |
11967 | else | |
11968 | bs->stop = 0; | |
06edf0c0 PA |
11969 | } |
11970 | ||
11971 | static enum print_stop_action | |
313f3b21 | 11972 | internal_bkpt_print_it (bpstat *bs) |
06edf0c0 | 11973 | { |
06edf0c0 | 11974 | struct breakpoint *b; |
06edf0c0 | 11975 | |
06edf0c0 PA |
11976 | b = bs->breakpoint_at; |
11977 | ||
06edf0c0 PA |
11978 | switch (b->type) |
11979 | { | |
348d480f PA |
11980 | case bp_shlib_event: |
11981 | /* Did we stop because the user set the stop_on_solib_events | |
11982 | variable? (If so, we report this as a generic, "Stopped due | |
11983 | to shlib event" message.) */ | |
4e9e993a | 11984 | print_solib_event (false); |
348d480f PA |
11985 | break; |
11986 | ||
11987 | case bp_thread_event: | |
11988 | /* Not sure how we will get here. | |
11989 | GDB should not stop for these breakpoints. */ | |
6cb06a8c | 11990 | gdb_printf (_("Thread Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11991 | break; |
11992 | ||
11993 | case bp_overlay_event: | |
11994 | /* By analogy with the thread event, GDB should not stop for these. */ | |
6cb06a8c | 11995 | gdb_printf (_("Overlay Event Breakpoint: gdb should not stop!\n")); |
348d480f PA |
11996 | break; |
11997 | ||
11998 | case bp_longjmp_master: | |
11999 | /* These should never be enabled. */ | |
6cb06a8c | 12000 | gdb_printf (_("Longjmp Master Breakpoint: gdb should not stop!\n")); |
348d480f PA |
12001 | break; |
12002 | ||
12003 | case bp_std_terminate_master: | |
12004 | /* These should never be enabled. */ | |
6cb06a8c TT |
12005 | gdb_printf (_("std::terminate Master Breakpoint: " |
12006 | "gdb should not stop!\n")); | |
348d480f PA |
12007 | break; |
12008 | ||
12009 | case bp_exception_master: | |
12010 | /* These should never be enabled. */ | |
6cb06a8c TT |
12011 | gdb_printf (_("Exception Master Breakpoint: " |
12012 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12013 | break; |
12014 | } | |
12015 | ||
001c8c33 | 12016 | return PRINT_NOTHING; |
06edf0c0 PA |
12017 | } |
12018 | ||
12019 | static void | |
12020 | internal_bkpt_print_mention (struct breakpoint *b) | |
12021 | { | |
12022 | /* Nothing to mention. These breakpoints are internal. */ | |
12023 | } | |
12024 | ||
06edf0c0 PA |
12025 | /* Virtual table for momentary breakpoints */ |
12026 | ||
12027 | static void | |
12028 | momentary_bkpt_re_set (struct breakpoint *b) | |
12029 | { | |
12030 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12031 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12032 | Otherwise these should have been blown away via the cleanup chain |
12033 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12034 | } | |
12035 | ||
12036 | static void | |
313f3b21 | 12037 | momentary_bkpt_check_status (bpstat *bs) |
06edf0c0 PA |
12038 | { |
12039 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12040 | } | |
12041 | ||
12042 | static enum print_stop_action | |
313f3b21 | 12043 | momentary_bkpt_print_it (bpstat *bs) |
06edf0c0 | 12044 | { |
001c8c33 | 12045 | return PRINT_UNKNOWN; |
348d480f PA |
12046 | } |
12047 | ||
06edf0c0 PA |
12048 | static void |
12049 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12050 | { |
06edf0c0 | 12051 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12052 | } |
12053 | ||
e2e4d78b JK |
12054 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12055 | ||
12056 | It gets cleared already on the removal of the first one of such placed | |
12057 | breakpoints. This is OK as they get all removed altogether. */ | |
12058 | ||
c1fc2657 | 12059 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12060 | { |
c1fc2657 | 12061 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12062 | |
c1fc2657 | 12063 | if (tp != NULL) |
e2e4d78b | 12064 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12065 | } |
12066 | ||
55aa24fb SDJ |
12067 | /* Specific methods for probe breakpoints. */ |
12068 | ||
12069 | static int | |
12070 | bkpt_probe_insert_location (struct bp_location *bl) | |
12071 | { | |
12072 | int v = bkpt_insert_location (bl); | |
12073 | ||
12074 | if (v == 0) | |
12075 | { | |
12076 | /* The insertion was successful, now let's set the probe's semaphore | |
12077 | if needed. */ | |
935676c9 | 12078 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12079 | } |
12080 | ||
12081 | return v; | |
12082 | } | |
12083 | ||
12084 | static int | |
73971819 PA |
12085 | bkpt_probe_remove_location (struct bp_location *bl, |
12086 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12087 | { |
12088 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12089 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12090 | |
73971819 | 12091 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12092 | } |
12093 | ||
12094 | static void | |
626d2320 | 12095 | bkpt_probe_create_sals_from_location (struct event_location *location, |
5f700d83 | 12096 | struct linespec_result *canonical, |
f00aae0f | 12097 | enum bptype type_wanted) |
55aa24fb SDJ |
12098 | { |
12099 | struct linespec_sals lsal; | |
12100 | ||
c2f4122d | 12101 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12102 | lsal.canonical |
12103 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12104 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12105 | } |
12106 | ||
6c5b2ebe | 12107 | static std::vector<symtab_and_line> |
f00aae0f | 12108 | bkpt_probe_decode_location (struct breakpoint *b, |
626d2320 | 12109 | struct event_location *location, |
6c5b2ebe | 12110 | struct program_space *search_pspace) |
55aa24fb | 12111 | { |
6c5b2ebe PA |
12112 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12113 | if (sals.empty ()) | |
55aa24fb | 12114 | error (_("probe not found")); |
6c5b2ebe | 12115 | return sals; |
55aa24fb SDJ |
12116 | } |
12117 | ||
348d480f | 12118 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12119 | |
348d480f PA |
12120 | static void |
12121 | tracepoint_re_set (struct breakpoint *b) | |
12122 | { | |
12123 | breakpoint_re_set_default (b); | |
12124 | } | |
876fa593 | 12125 | |
348d480f PA |
12126 | static int |
12127 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12128 | const address_space *aspace, CORE_ADDR bp_addr, |
c272a98c | 12129 | const target_waitstatus &ws) |
348d480f PA |
12130 | { |
12131 | /* By definition, the inferior does not report stops at | |
12132 | tracepoints. */ | |
12133 | return 0; | |
74960c60 VP |
12134 | } |
12135 | ||
12136 | static void | |
348d480f PA |
12137 | tracepoint_print_one_detail (const struct breakpoint *self, |
12138 | struct ui_out *uiout) | |
74960c60 | 12139 | { |
d9b3f62e | 12140 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12141 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12142 | { |
12143 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12144 | |
6a831f06 PA |
12145 | uiout->message ("\tmarker id is %pF\n", |
12146 | string_field ("static-tracepoint-marker-string-id", | |
12147 | tp->static_trace_marker_id.c_str ())); | |
348d480f | 12148 | } |
0d381245 VP |
12149 | } |
12150 | ||
a474d7c2 | 12151 | static void |
348d480f | 12152 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12153 | { |
112e8700 | 12154 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12155 | return; |
cc59ec59 | 12156 | |
348d480f PA |
12157 | switch (b->type) |
12158 | { | |
12159 | case bp_tracepoint: | |
6cb06a8c TT |
12160 | gdb_printf (_("Tracepoint")); |
12161 | gdb_printf (_(" %d"), b->number); | |
348d480f PA |
12162 | break; |
12163 | case bp_fast_tracepoint: | |
6cb06a8c TT |
12164 | gdb_printf (_("Fast tracepoint")); |
12165 | gdb_printf (_(" %d"), b->number); | |
348d480f PA |
12166 | break; |
12167 | case bp_static_tracepoint: | |
6cb06a8c TT |
12168 | gdb_printf (_("Static tracepoint")); |
12169 | gdb_printf (_(" %d"), b->number); | |
348d480f PA |
12170 | break; |
12171 | default: | |
12172 | internal_error (__FILE__, __LINE__, | |
12173 | _("unhandled tracepoint type %d"), (int) b->type); | |
12174 | } | |
12175 | ||
12176 | say_where (b); | |
a474d7c2 PA |
12177 | } |
12178 | ||
348d480f | 12179 | static void |
d9b3f62e | 12180 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12181 | { |
d9b3f62e PA |
12182 | struct tracepoint *tp = (struct tracepoint *) self; |
12183 | ||
12184 | if (self->type == bp_fast_tracepoint) | |
6cb06a8c | 12185 | gdb_printf (fp, "ftrace"); |
c93e8391 | 12186 | else if (self->type == bp_static_tracepoint) |
6cb06a8c | 12187 | gdb_printf (fp, "strace"); |
d9b3f62e | 12188 | else if (self->type == bp_tracepoint) |
6cb06a8c | 12189 | gdb_printf (fp, "trace"); |
348d480f PA |
12190 | else |
12191 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12192 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12193 | |
6cb06a8c TT |
12194 | gdb_printf (fp, " %s", |
12195 | event_location_to_string (self->location.get ())); | |
d9b3f62e PA |
12196 | print_recreate_thread (self, fp); |
12197 | ||
12198 | if (tp->pass_count) | |
6cb06a8c | 12199 | gdb_printf (fp, " passcount %d\n", tp->pass_count); |
a474d7c2 PA |
12200 | } |
12201 | ||
6c5b2ebe | 12202 | static std::vector<symtab_and_line> |
f00aae0f | 12203 | tracepoint_decode_location (struct breakpoint *b, |
626d2320 | 12204 | struct event_location *location, |
6c5b2ebe | 12205 | struct program_space *search_pspace) |
983af33b | 12206 | { |
6c5b2ebe | 12207 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12208 | } |
12209 | ||
2060206e | 12210 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12211 | |
bac7c5cf | 12212 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12213 | |
12214 | static void | |
f00aae0f | 12215 | tracepoint_probe_create_sals_from_location |
626d2320 | 12216 | (struct event_location *location, |
f00aae0f KS |
12217 | struct linespec_result *canonical, |
12218 | enum bptype type_wanted) | |
55aa24fb SDJ |
12219 | { |
12220 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12221 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12222 | } |
12223 | ||
6c5b2ebe | 12224 | static std::vector<symtab_and_line> |
f00aae0f | 12225 | tracepoint_probe_decode_location (struct breakpoint *b, |
626d2320 | 12226 | struct event_location *location, |
6c5b2ebe | 12227 | struct program_space *search_pspace) |
55aa24fb SDJ |
12228 | { |
12229 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12230 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12231 | } |
12232 | ||
5c2b4418 HZ |
12233 | /* Dprintf breakpoint_ops methods. */ |
12234 | ||
12235 | static void | |
12236 | dprintf_re_set (struct breakpoint *b) | |
12237 | { | |
12238 | breakpoint_re_set_default (b); | |
12239 | ||
f00aae0f KS |
12240 | /* extra_string should never be non-NULL for dprintf. */ |
12241 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12242 | |
12243 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12244 | 2 - create a dprintf, which resolves fine. | |
12245 | 3 - disconnect from target 1 | |
12246 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12247 | ||
12248 | After steps #3/#4, you'll want the dprintf command list to | |
12249 | be updated, because target 1 and 2 may well return different | |
12250 | answers for target_can_run_breakpoint_commands(). | |
12251 | Given absence of finer grained resetting, we get to do | |
12252 | it all the time. */ | |
12253 | if (b->extra_string != NULL) | |
12254 | update_dprintf_command_list (b); | |
12255 | } | |
12256 | ||
2d9442cc HZ |
12257 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12258 | ||
12259 | static void | |
12260 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12261 | { | |
6cb06a8c TT |
12262 | gdb_printf (fp, "dprintf %s,%s", |
12263 | event_location_to_string (tp->location.get ()), | |
12264 | tp->extra_string.get ()); | |
2d9442cc HZ |
12265 | print_recreate_thread (tp, fp); |
12266 | } | |
12267 | ||
9d6e6e84 HZ |
12268 | /* Implement the "after_condition_true" breakpoint_ops method for |
12269 | dprintf. | |
12270 | ||
12271 | dprintf's are implemented with regular commands in their command | |
12272 | list, but we run the commands here instead of before presenting the | |
12273 | stop to the user, as dprintf's don't actually cause a stop. This | |
12274 | also makes it so that the commands of multiple dprintfs at the same | |
12275 | address are all handled. */ | |
12276 | ||
12277 | static void | |
313f3b21 | 12278 | dprintf_after_condition_true (struct bpstat *bs) |
9d6e6e84 | 12279 | { |
9d6e6e84 HZ |
12280 | /* dprintf's never cause a stop. This wasn't set in the |
12281 | check_status hook instead because that would make the dprintf's | |
12282 | condition not be evaluated. */ | |
12283 | bs->stop = 0; | |
12284 | ||
12285 | /* Run the command list here. Take ownership of it instead of | |
12286 | copying. We never want these commands to run later in | |
12287 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12288 | be set at same address as this dprintf, or even if running the | |
12289 | commands here throws. */ | |
9c95aea1 KB |
12290 | counted_command_line cmds = std::move (bs->commands); |
12291 | gdb_assert (cmds != nullptr); | |
12292 | execute_control_commands (cmds.get (), 0); | |
9d6e6e84 HZ |
12293 | } |
12294 | ||
983af33b SDJ |
12295 | /* The breakpoint_ops structure to be used on static tracepoints with |
12296 | markers (`-m'). */ | |
12297 | ||
12298 | static void | |
626d2320 | 12299 | strace_marker_create_sals_from_location (struct event_location *location, |
5f700d83 | 12300 | struct linespec_result *canonical, |
f00aae0f | 12301 | enum bptype type_wanted) |
983af33b SDJ |
12302 | { |
12303 | struct linespec_sals lsal; | |
f00aae0f | 12304 | const char *arg_start, *arg; |
983af33b | 12305 | |
a20714ff | 12306 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12307 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12308 | |
f2fc3015 TT |
12309 | std::string str (arg_start, arg - arg_start); |
12310 | const char *ptr = str.c_str (); | |
a20714ff PA |
12311 | canonical->location |
12312 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12313 | |
8e9e35b1 TT |
12314 | lsal.canonical |
12315 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12316 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12317 | } |
12318 | ||
12319 | static void | |
12320 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12321 | struct linespec_result *canonical, | |
e1e01040 PA |
12322 | gdb::unique_xmalloc_ptr<char> cond_string, |
12323 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12324 | enum bptype type_wanted, |
12325 | enum bpdisp disposition, | |
12326 | int thread, | |
12327 | int task, int ignore_count, | |
12328 | const struct breakpoint_ops *ops, | |
12329 | int from_tty, int enabled, | |
44f238bb | 12330 | int internal, unsigned flags) |
983af33b | 12331 | { |
6c5b2ebe | 12332 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12333 | |
12334 | /* If the user is creating a static tracepoint by marker id | |
12335 | (strace -m MARKER_ID), then store the sals index, so that | |
12336 | breakpoint_re_set can try to match up which of the newly | |
12337 | found markers corresponds to this one, and, don't try to | |
12338 | expand multiple locations for each sal, given than SALS | |
12339 | already should contain all sals for MARKER_ID. */ | |
12340 | ||
6c5b2ebe | 12341 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12342 | { |
6c5b2ebe PA |
12343 | event_location_up location |
12344 | = copy_event_location (canonical->location.get ()); | |
983af33b | 12345 | |
b270e6f9 | 12346 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 12347 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 12348 | std::move (location), NULL, |
e1e01040 PA |
12349 | std::move (cond_string), |
12350 | std::move (extra_string), | |
e7e0cddf | 12351 | type_wanted, disposition, |
983af33b | 12352 | thread, task, ignore_count, ops, |
44f238bb | 12353 | from_tty, enabled, internal, flags, |
983af33b SDJ |
12354 | canonical->special_display); |
12355 | /* Given that its possible to have multiple markers with | |
12356 | the same string id, if the user is creating a static | |
12357 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
12358 | store the sals index, so that breakpoint_re_set can | |
12359 | try to match up which of the newly found markers | |
12360 | corresponds to this one */ | |
12361 | tp->static_trace_marker_id_idx = i; | |
12362 | ||
b270e6f9 | 12363 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
12364 | } |
12365 | } | |
12366 | ||
6c5b2ebe | 12367 | static std::vector<symtab_and_line> |
f00aae0f | 12368 | strace_marker_decode_location (struct breakpoint *b, |
626d2320 | 12369 | struct event_location *location, |
6c5b2ebe | 12370 | struct program_space *search_pspace) |
983af33b SDJ |
12371 | { |
12372 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 12373 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 12374 | |
6c5b2ebe PA |
12375 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
12376 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 12377 | { |
6c5b2ebe PA |
12378 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
12379 | sals.resize (1); | |
12380 | return sals; | |
983af33b SDJ |
12381 | } |
12382 | else | |
5d9310c4 | 12383 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
12384 | } |
12385 | ||
12386 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
12387 | ||
12388 | static int | |
12389 | strace_marker_p (struct breakpoint *b) | |
12390 | { | |
12391 | return b->ops == &strace_marker_breakpoint_ops; | |
12392 | } | |
12393 | ||
53a5351d | 12394 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 12395 | structures. */ |
c906108c SS |
12396 | |
12397 | void | |
fba45db2 | 12398 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 12399 | { |
8a3fe4f8 | 12400 | gdb_assert (bpt != NULL); |
c906108c | 12401 | |
4a64f543 MS |
12402 | /* Has this bp already been deleted? This can happen because |
12403 | multiple lists can hold pointers to bp's. bpstat lists are | |
12404 | especial culprits. | |
12405 | ||
12406 | One example of this happening is a watchpoint's scope bp. When | |
12407 | the scope bp triggers, we notice that the watchpoint is out of | |
12408 | scope, and delete it. We also delete its scope bp. But the | |
12409 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
12410 | That bpstat is then checked for auto-deleting bp's, which are | |
12411 | deleted. | |
12412 | ||
12413 | A real solution to this problem might involve reference counts in | |
12414 | bp's, and/or giving them pointers back to their referencing | |
12415 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
12416 | storage when no more references were extent. A cheaper bandaid | |
12417 | was chosen. */ | |
c906108c SS |
12418 | if (bpt->type == bp_none) |
12419 | return; | |
12420 | ||
4a64f543 MS |
12421 | /* At least avoid this stale reference until the reference counting |
12422 | of breakpoints gets resolved. */ | |
d0fb5eae | 12423 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 12424 | { |
d0fb5eae | 12425 | struct breakpoint *related; |
3a5c3e22 | 12426 | struct watchpoint *w; |
d0fb5eae JK |
12427 | |
12428 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 12429 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 12430 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
12431 | w = (struct watchpoint *) bpt; |
12432 | else | |
12433 | w = NULL; | |
12434 | if (w != NULL) | |
12435 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
12436 | |
12437 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
12438 | for (related = bpt; related->related_breakpoint != bpt; | |
12439 | related = related->related_breakpoint); | |
12440 | related->related_breakpoint = bpt->related_breakpoint; | |
12441 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
12442 | } |
12443 | ||
a9634178 TJB |
12444 | /* watch_command_1 creates a watchpoint but only sets its number if |
12445 | update_watchpoint succeeds in creating its bp_locations. If there's | |
12446 | a problem in that process, we'll be asked to delete the half-created | |
12447 | watchpoint. In that case, don't announce the deletion. */ | |
12448 | if (bpt->number) | |
76727919 | 12449 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 12450 | |
c906108c SS |
12451 | if (breakpoint_chain == bpt) |
12452 | breakpoint_chain = bpt->next; | |
12453 | ||
43892fdf | 12454 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 12455 | if (b->next == bpt) |
01add95b SM |
12456 | { |
12457 | b->next = bpt->next; | |
12458 | break; | |
12459 | } | |
c906108c | 12460 | |
f431efe5 PA |
12461 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
12462 | been freed. */ | |
12463 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 12464 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
12465 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
12466 | commands are associated with the bpstat; if we remove it here, | |
12467 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
12468 | event-top.c won't do anything, and temporary breakpoints with | |
12469 | commands won't work. */ | |
12470 | ||
12471 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
12472 | ||
4a64f543 MS |
12473 | /* Now that breakpoint is removed from breakpoint list, update the |
12474 | global location list. This will remove locations that used to | |
12475 | belong to this breakpoint. Do this before freeing the breakpoint | |
12476 | itself, since remove_breakpoint looks at location's owner. It | |
12477 | might be better design to have location completely | |
12478 | self-contained, but it's not the case now. */ | |
44702360 | 12479 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 12480 | |
4a64f543 MS |
12481 | /* On the chance that someone will soon try again to delete this |
12482 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 12483 | bpt->type = bp_none; |
4d01a485 | 12484 | delete bpt; |
c906108c SS |
12485 | } |
12486 | ||
51be5b68 PA |
12487 | /* Iterator function to call a user-provided callback function once |
12488 | for each of B and its related breakpoints. */ | |
12489 | ||
12490 | static void | |
12491 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 12492 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
12493 | { |
12494 | struct breakpoint *related; | |
12495 | ||
12496 | related = b; | |
12497 | do | |
12498 | { | |
12499 | struct breakpoint *next; | |
12500 | ||
12501 | /* FUNCTION may delete RELATED. */ | |
12502 | next = related->related_breakpoint; | |
12503 | ||
12504 | if (next == related) | |
12505 | { | |
12506 | /* RELATED is the last ring entry. */ | |
48649e1b | 12507 | function (related); |
51be5b68 PA |
12508 | |
12509 | /* FUNCTION may have deleted it, so we'd never reach back to | |
12510 | B. There's nothing left to do anyway, so just break | |
12511 | out. */ | |
12512 | break; | |
12513 | } | |
12514 | else | |
48649e1b | 12515 | function (related); |
51be5b68 PA |
12516 | |
12517 | related = next; | |
12518 | } | |
12519 | while (related != b); | |
12520 | } | |
95a42b64 | 12521 | |
4495129a | 12522 | static void |
981a3fb3 | 12523 | delete_command (const char *arg, int from_tty) |
c906108c | 12524 | { |
ea9365bb TT |
12525 | dont_repeat (); |
12526 | ||
c906108c SS |
12527 | if (arg == 0) |
12528 | { | |
12529 | int breaks_to_delete = 0; | |
12530 | ||
46c6471b | 12531 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
12532 | internal breakpoints, these have to be deleted with an |
12533 | explicit breakpoint number argument. */ | |
43892fdf | 12534 | for (breakpoint *b : all_breakpoints ()) |
46c6471b | 12535 | if (user_breakpoint_p (b)) |
973d738b DJ |
12536 | { |
12537 | breaks_to_delete = 1; | |
12538 | break; | |
12539 | } | |
c906108c SS |
12540 | |
12541 | /* Ask user only if there are some breakpoints to delete. */ | |
12542 | if (!from_tty | |
e2e0b3e5 | 12543 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
1428b37a SM |
12544 | for (breakpoint *b : all_breakpoints_safe ()) |
12545 | if (user_breakpoint_p (b)) | |
12546 | delete_breakpoint (b); | |
c906108c SS |
12547 | } |
12548 | else | |
48649e1b | 12549 | map_breakpoint_numbers |
b926417a | 12550 | (arg, [&] (breakpoint *br) |
48649e1b | 12551 | { |
b926417a | 12552 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 12553 | }); |
c906108c SS |
12554 | } |
12555 | ||
c2f4122d PA |
12556 | /* Return true if all locations of B bound to PSPACE are pending. If |
12557 | PSPACE is NULL, all locations of all program spaces are | |
12558 | considered. */ | |
12559 | ||
0d381245 | 12560 | static int |
c2f4122d | 12561 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 12562 | { |
40cb8ca5 | 12563 | for (bp_location *loc : b->locations ()) |
c2f4122d PA |
12564 | if ((pspace == NULL |
12565 | || loc->pspace == pspace) | |
12566 | && !loc->shlib_disabled | |
8645ff69 | 12567 | && !loc->pspace->executing_startup) |
0d381245 VP |
12568 | return 0; |
12569 | return 1; | |
fe3f5fa8 VP |
12570 | } |
12571 | ||
776592bf DE |
12572 | /* Subroutine of update_breakpoint_locations to simplify it. |
12573 | Return non-zero if multiple fns in list LOC have the same name. | |
12574 | Null names are ignored. */ | |
12575 | ||
12576 | static int | |
12577 | ambiguous_names_p (struct bp_location *loc) | |
12578 | { | |
12579 | struct bp_location *l; | |
2698f5ea | 12580 | htab_up htab (htab_create_alloc (13, htab_hash_string, htab_eq_string, NULL, |
c1fb9836 | 12581 | xcalloc, xfree)); |
776592bf DE |
12582 | |
12583 | for (l = loc; l != NULL; l = l->next) | |
12584 | { | |
12585 | const char **slot; | |
23d6ee64 | 12586 | const char *name = l->function_name.get (); |
776592bf DE |
12587 | |
12588 | /* Allow for some names to be NULL, ignore them. */ | |
12589 | if (name == NULL) | |
12590 | continue; | |
12591 | ||
c1fb9836 | 12592 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 12593 | INSERT); |
4a64f543 MS |
12594 | /* NOTE: We can assume slot != NULL here because xcalloc never |
12595 | returns NULL. */ | |
776592bf | 12596 | if (*slot != NULL) |
c1fb9836 | 12597 | return 1; |
776592bf DE |
12598 | *slot = name; |
12599 | } | |
12600 | ||
776592bf DE |
12601 | return 0; |
12602 | } | |
12603 | ||
0fb4aa4b PA |
12604 | /* When symbols change, it probably means the sources changed as well, |
12605 | and it might mean the static tracepoint markers are no longer at | |
12606 | the same address or line numbers they used to be at last we | |
12607 | checked. Losing your static tracepoints whenever you rebuild is | |
12608 | undesirable. This function tries to resync/rematch gdb static | |
12609 | tracepoints with the markers on the target, for static tracepoints | |
12610 | that have not been set by marker id. Static tracepoint that have | |
12611 | been set by marker id are reset by marker id in breakpoint_re_set. | |
12612 | The heuristic is: | |
12613 | ||
12614 | 1) For a tracepoint set at a specific address, look for a marker at | |
12615 | the old PC. If one is found there, assume to be the same marker. | |
12616 | If the name / string id of the marker found is different from the | |
12617 | previous known name, assume that means the user renamed the marker | |
12618 | in the sources, and output a warning. | |
12619 | ||
12620 | 2) For a tracepoint set at a given line number, look for a marker | |
12621 | at the new address of the old line number. If one is found there, | |
12622 | assume to be the same marker. If the name / string id of the | |
12623 | marker found is different from the previous known name, assume that | |
12624 | means the user renamed the marker in the sources, and output a | |
12625 | warning. | |
12626 | ||
12627 | 3) If a marker is no longer found at the same address or line, it | |
12628 | may mean the marker no longer exists. But it may also just mean | |
12629 | the code changed a bit. Maybe the user added a few lines of code | |
12630 | that made the marker move up or down (in line number terms). Ask | |
12631 | the target for info about the marker with the string id as we knew | |
12632 | it. If found, update line number and address in the matching | |
12633 | static tracepoint. This will get confused if there's more than one | |
12634 | marker with the same ID (possible in UST, although unadvised | |
12635 | precisely because it confuses tools). */ | |
12636 | ||
12637 | static struct symtab_and_line | |
12638 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
12639 | { | |
d9b3f62e | 12640 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
12641 | struct static_tracepoint_marker marker; |
12642 | CORE_ADDR pc; | |
0fb4aa4b PA |
12643 | |
12644 | pc = sal.pc; | |
12645 | if (sal.line) | |
12646 | find_line_pc (sal.symtab, sal.line, &pc); | |
12647 | ||
12648 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
12649 | { | |
5d9310c4 | 12650 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 12651 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
12652 | b->number, tp->static_trace_marker_id.c_str (), |
12653 | marker.str_id.c_str ()); | |
0fb4aa4b | 12654 | |
5d9310c4 | 12655 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
12656 | |
12657 | return sal; | |
12658 | } | |
12659 | ||
12660 | /* Old marker wasn't found on target at lineno. Try looking it up | |
12661 | by string ID. */ | |
12662 | if (!sal.explicit_pc | |
12663 | && sal.line != 0 | |
12664 | && sal.symtab != NULL | |
5d9310c4 | 12665 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 12666 | { |
5d9310c4 SM |
12667 | std::vector<static_tracepoint_marker> markers |
12668 | = target_static_tracepoint_markers_by_strid | |
12669 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 12670 | |
5d9310c4 | 12671 | if (!markers.empty ()) |
0fb4aa4b | 12672 | { |
0fb4aa4b | 12673 | struct symbol *sym; |
80e1d417 | 12674 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 12675 | struct ui_out *uiout = current_uiout; |
67994074 | 12676 | struct explicit_location explicit_loc; |
0fb4aa4b | 12677 | |
5d9310c4 | 12678 | tpmarker = &markers[0]; |
0fb4aa4b | 12679 | |
5d9310c4 | 12680 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
12681 | |
12682 | warning (_("marker for static tracepoint %d (%s) not " | |
12683 | "found at previous line number"), | |
5d9310c4 | 12684 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 12685 | |
51abb421 | 12686 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 12687 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 12688 | uiout->text ("Now in "); |
0fb4aa4b PA |
12689 | if (sym) |
12690 | { | |
987012b8 | 12691 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 12692 | function_name_style.style ()); |
112e8700 | 12693 | uiout->text (" at "); |
0fb4aa4b | 12694 | } |
112e8700 | 12695 | uiout->field_string ("file", |
cbe56571 | 12696 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 12697 | file_name_style.style ()); |
112e8700 | 12698 | uiout->text (":"); |
0fb4aa4b | 12699 | |
112e8700 | 12700 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 12701 | { |
0b0865da | 12702 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 12703 | |
112e8700 | 12704 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
12705 | } |
12706 | ||
381befee | 12707 | uiout->field_signed ("line", sal2.line); |
112e8700 | 12708 | uiout->text ("\n"); |
0fb4aa4b | 12709 | |
80e1d417 | 12710 | b->loc->line_number = sal2.line; |
2f202fde | 12711 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 12712 | |
d28cd78a | 12713 | b->location.reset (NULL); |
67994074 KS |
12714 | initialize_explicit_location (&explicit_loc); |
12715 | explicit_loc.source_filename | |
00e52e53 | 12716 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
12717 | explicit_loc.line_offset.offset = b->loc->line_number; |
12718 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 12719 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
12720 | |
12721 | /* Might be nice to check if function changed, and warn if | |
12722 | so. */ | |
0fb4aa4b PA |
12723 | } |
12724 | } | |
12725 | return sal; | |
12726 | } | |
12727 | ||
8d3788bd VP |
12728 | /* Returns 1 iff locations A and B are sufficiently same that |
12729 | we don't need to report breakpoint as changed. */ | |
12730 | ||
12731 | static int | |
12732 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
12733 | { | |
12734 | while (a && b) | |
12735 | { | |
12736 | if (a->address != b->address) | |
12737 | return 0; | |
12738 | ||
12739 | if (a->shlib_disabled != b->shlib_disabled) | |
12740 | return 0; | |
12741 | ||
12742 | if (a->enabled != b->enabled) | |
12743 | return 0; | |
12744 | ||
b5fa468f TBA |
12745 | if (a->disabled_by_cond != b->disabled_by_cond) |
12746 | return 0; | |
12747 | ||
8d3788bd VP |
12748 | a = a->next; |
12749 | b = b->next; | |
12750 | } | |
12751 | ||
12752 | if ((a == NULL) != (b == NULL)) | |
12753 | return 0; | |
12754 | ||
12755 | return 1; | |
12756 | } | |
12757 | ||
c2f4122d PA |
12758 | /* Split all locations of B that are bound to PSPACE out of B's |
12759 | location list to a separate list and return that list's head. If | |
12760 | PSPACE is NULL, hoist out all locations of B. */ | |
12761 | ||
12762 | static struct bp_location * | |
12763 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
12764 | { | |
12765 | struct bp_location head; | |
12766 | struct bp_location *i = b->loc; | |
12767 | struct bp_location **i_link = &b->loc; | |
12768 | struct bp_location *hoisted = &head; | |
12769 | ||
12770 | if (pspace == NULL) | |
12771 | { | |
12772 | i = b->loc; | |
12773 | b->loc = NULL; | |
12774 | return i; | |
12775 | } | |
12776 | ||
12777 | head.next = NULL; | |
12778 | ||
12779 | while (i != NULL) | |
12780 | { | |
12781 | if (i->pspace == pspace) | |
12782 | { | |
12783 | *i_link = i->next; | |
12784 | i->next = NULL; | |
12785 | hoisted->next = i; | |
12786 | hoisted = i; | |
12787 | } | |
12788 | else | |
12789 | i_link = &i->next; | |
12790 | i = *i_link; | |
12791 | } | |
12792 | ||
12793 | return head.next; | |
12794 | } | |
12795 | ||
12796 | /* Create new breakpoint locations for B (a hardware or software | |
12797 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
12798 | zero, then B is a ranged breakpoint. Only recreates locations for | |
12799 | FILTER_PSPACE. Locations of other program spaces are left | |
12800 | untouched. */ | |
f1310107 | 12801 | |
0e30163f | 12802 | void |
0d381245 | 12803 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 12804 | struct program_space *filter_pspace, |
6c5b2ebe PA |
12805 | gdb::array_view<const symtab_and_line> sals, |
12806 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 12807 | { |
c2f4122d | 12808 | struct bp_location *existing_locations; |
0d381245 | 12809 | |
6c5b2ebe | 12810 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
12811 | { |
12812 | /* Ranged breakpoints have only one start location and one end | |
12813 | location. */ | |
12814 | b->enable_state = bp_disabled; | |
6cb06a8c TT |
12815 | gdb_printf (gdb_stderr, |
12816 | _("Could not reset ranged breakpoint %d: " | |
12817 | "multiple locations found\n"), | |
12818 | b->number); | |
f8eba3c6 TT |
12819 | return; |
12820 | } | |
f1310107 | 12821 | |
4a64f543 MS |
12822 | /* If there's no new locations, and all existing locations are |
12823 | pending, don't do anything. This optimizes the common case where | |
12824 | all locations are in the same shared library, that was unloaded. | |
12825 | We'd like to retain the location, so that when the library is | |
12826 | loaded again, we don't loose the enabled/disabled status of the | |
12827 | individual locations. */ | |
6c5b2ebe | 12828 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
12829 | return; |
12830 | ||
c2f4122d | 12831 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 12832 | |
6c5b2ebe | 12833 | for (const auto &sal : sals) |
fe3f5fa8 | 12834 | { |
f8eba3c6 TT |
12835 | struct bp_location *new_loc; |
12836 | ||
6c5b2ebe | 12837 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 12838 | |
6c5b2ebe | 12839 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 12840 | |
0d381245 VP |
12841 | /* Reparse conditions, they might contain references to the |
12842 | old symtab. */ | |
12843 | if (b->cond_string != NULL) | |
12844 | { | |
bbc13ae3 | 12845 | const char *s; |
fe3f5fa8 | 12846 | |
6f781ee3 | 12847 | s = b->cond_string.get (); |
a70b8144 | 12848 | try |
0d381245 | 12849 | { |
6c5b2ebe PA |
12850 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
12851 | block_for_pc (sal.pc), | |
0d381245 VP |
12852 | 0); |
12853 | } | |
230d2906 | 12854 | catch (const gdb_exception_error &e) |
0d381245 | 12855 | { |
b5fa468f | 12856 | new_loc->disabled_by_cond = true; |
0d381245 VP |
12857 | } |
12858 | } | |
fe3f5fa8 | 12859 | |
6c5b2ebe | 12860 | if (!sals_end.empty ()) |
f1310107 | 12861 | { |
6c5b2ebe | 12862 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 12863 | |
6c5b2ebe | 12864 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 12865 | } |
0d381245 | 12866 | } |
fe3f5fa8 | 12867 | |
4a64f543 MS |
12868 | /* If possible, carry over 'disable' status from existing |
12869 | breakpoints. */ | |
0d381245 VP |
12870 | { |
12871 | struct bp_location *e = existing_locations; | |
776592bf DE |
12872 | /* If there are multiple breakpoints with the same function name, |
12873 | e.g. for inline functions, comparing function names won't work. | |
12874 | Instead compare pc addresses; this is just a heuristic as things | |
12875 | may have moved, but in practice it gives the correct answer | |
12876 | often enough until a better solution is found. */ | |
12877 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
12878 | ||
0d381245 VP |
12879 | for (; e; e = e->next) |
12880 | { | |
b5fa468f | 12881 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 | 12882 | { |
776592bf DE |
12883 | if (have_ambiguous_names) |
12884 | { | |
40cb8ca5 | 12885 | for (bp_location *l : b->locations ()) |
7f32a4d5 PA |
12886 | { |
12887 | /* Ignore software vs hardware location type at | |
12888 | this point, because with "set breakpoint | |
12889 | auto-hw", after a re-set, locations that were | |
12890 | hardware can end up as software, or vice versa. | |
12891 | As mentioned above, this is an heuristic and in | |
12892 | practice should give the correct answer often | |
12893 | enough. */ | |
12894 | if (breakpoint_locations_match (e, l, true)) | |
12895 | { | |
b5fa468f TBA |
12896 | l->enabled = e->enabled; |
12897 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
12898 | break; |
12899 | } | |
12900 | } | |
776592bf DE |
12901 | } |
12902 | else | |
12903 | { | |
40cb8ca5 | 12904 | for (bp_location *l : b->locations ()) |
776592bf | 12905 | if (l->function_name |
23d6ee64 TT |
12906 | && strcmp (e->function_name.get (), |
12907 | l->function_name.get ()) == 0) | |
776592bf | 12908 | { |
b5fa468f TBA |
12909 | l->enabled = e->enabled; |
12910 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
12911 | break; |
12912 | } | |
12913 | } | |
0d381245 VP |
12914 | } |
12915 | } | |
12916 | } | |
fe3f5fa8 | 12917 | |
8d3788bd | 12918 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 12919 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
12920 | } |
12921 | ||
f00aae0f | 12922 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
12923 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
12924 | ||
6c5b2ebe | 12925 | static std::vector<symtab_and_line> |
f00aae0f | 12926 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 12927 | struct program_space *search_pspace, int *found) |
ef23e705 | 12928 | { |
cc06b668 | 12929 | struct gdb_exception exception; |
ef23e705 | 12930 | |
983af33b | 12931 | gdb_assert (b->ops != NULL); |
ef23e705 | 12932 | |
6c5b2ebe PA |
12933 | std::vector<symtab_and_line> sals; |
12934 | ||
a70b8144 | 12935 | try |
ef23e705 | 12936 | { |
6c5b2ebe | 12937 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 12938 | } |
94aeb44b | 12939 | catch (gdb_exception_error &e) |
ef23e705 TJB |
12940 | { |
12941 | int not_found_and_ok = 0; | |
492d29ea | 12942 | |
ef23e705 TJB |
12943 | /* For pending breakpoints, it's expected that parsing will |
12944 | fail until the right shared library is loaded. User has | |
12945 | already told to create pending breakpoints and don't need | |
12946 | extra messages. If breakpoint is in bp_shlib_disabled | |
12947 | state, then user already saw the message about that | |
12948 | breakpoint being disabled, and don't want to see more | |
12949 | errors. */ | |
58438ac1 | 12950 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
12951 | && (b->condition_not_parsed |
12952 | || (b->loc != NULL | |
12953 | && search_pspace != NULL | |
12954 | && b->loc->pspace != search_pspace) | |
ef23e705 | 12955 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 12956 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
12957 | || b->enable_state == bp_disabled)) |
12958 | not_found_and_ok = 1; | |
12959 | ||
12960 | if (!not_found_and_ok) | |
12961 | { | |
12962 | /* We surely don't want to warn about the same breakpoint | |
12963 | 10 times. One solution, implemented here, is disable | |
12964 | the breakpoint on error. Another solution would be to | |
12965 | have separate 'warning emitted' flag. Since this | |
12966 | happens only when a binary has changed, I don't know | |
12967 | which approach is better. */ | |
12968 | b->enable_state = bp_disabled; | |
eedc3f4f | 12969 | throw; |
ef23e705 | 12970 | } |
94aeb44b TT |
12971 | |
12972 | exception = std::move (e); | |
ef23e705 TJB |
12973 | } |
12974 | ||
492d29ea | 12975 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 12976 | { |
6c5b2ebe PA |
12977 | for (auto &sal : sals) |
12978 | resolve_sal_pc (&sal); | |
f00aae0f | 12979 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 12980 | { |
6f781ee3 | 12981 | gdb::unique_xmalloc_ptr<char> cond_string, extra_string; |
ed1d1739 | 12982 | int thread, task; |
ef23e705 | 12983 | |
6f781ee3 | 12984 | find_condition_and_thread_for_sals (sals, b->extra_string.get (), |
b5fa468f TBA |
12985 | &cond_string, &thread, |
12986 | &task, &extra_string); | |
f00aae0f | 12987 | gdb_assert (b->cond_string == NULL); |
ef23e705 | 12988 | if (cond_string) |
6f781ee3 | 12989 | b->cond_string = std::move (cond_string); |
ef23e705 TJB |
12990 | b->thread = thread; |
12991 | b->task = task; | |
e7e0cddf | 12992 | if (extra_string) |
6f781ee3 | 12993 | b->extra_string = std::move (extra_string); |
ef23e705 TJB |
12994 | b->condition_not_parsed = 0; |
12995 | } | |
12996 | ||
983af33b | 12997 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 12998 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 12999 | |
58438ac1 TT |
13000 | *found = 1; |
13001 | } | |
13002 | else | |
13003 | *found = 0; | |
ef23e705 TJB |
13004 | |
13005 | return sals; | |
13006 | } | |
13007 | ||
348d480f PA |
13008 | /* The default re_set method, for typical hardware or software |
13009 | breakpoints. Reevaluate the breakpoint and recreate its | |
13010 | locations. */ | |
13011 | ||
13012 | static void | |
28010a5d | 13013 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13014 | { |
c2f4122d | 13015 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13016 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13017 | |
6c5b2ebe PA |
13018 | int found; |
13019 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13020 | filter_pspace, &found); | |
ef23e705 | 13021 | if (found) |
6c5b2ebe | 13022 | expanded = std::move (sals); |
ef23e705 | 13023 | |
f00aae0f | 13024 | if (b->location_range_end != NULL) |
f1310107 | 13025 | { |
6c5b2ebe PA |
13026 | std::vector<symtab_and_line> sals_end |
13027 | = location_to_sals (b, b->location_range_end.get (), | |
13028 | filter_pspace, &found); | |
f1310107 | 13029 | if (found) |
6c5b2ebe | 13030 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13031 | } |
13032 | ||
c2f4122d | 13033 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13034 | } |
13035 | ||
983af33b SDJ |
13036 | /* Default method for creating SALs from an address string. It basically |
13037 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13038 | ||
13039 | static void | |
626d2320 | 13040 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
13041 | struct linespec_result *canonical, |
13042 | enum bptype type_wanted) | |
983af33b | 13043 | { |
f00aae0f | 13044 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13045 | } |
13046 | ||
13047 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13048 | function for the `create_breakpoints_sal' method of | |
13049 | breakpoint_ops. */ | |
13050 | ||
13051 | static void | |
13052 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13053 | struct linespec_result *canonical, | |
e1e01040 PA |
13054 | gdb::unique_xmalloc_ptr<char> cond_string, |
13055 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13056 | enum bptype type_wanted, |
13057 | enum bpdisp disposition, | |
13058 | int thread, | |
13059 | int task, int ignore_count, | |
13060 | const struct breakpoint_ops *ops, | |
13061 | int from_tty, int enabled, | |
44f238bb | 13062 | int internal, unsigned flags) |
983af33b | 13063 | { |
e1e01040 PA |
13064 | create_breakpoints_sal (gdbarch, canonical, |
13065 | std::move (cond_string), | |
13066 | std::move (extra_string), | |
983af33b SDJ |
13067 | type_wanted, disposition, |
13068 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13069 | enabled, internal, flags); |
983af33b SDJ |
13070 | } |
13071 | ||
13072 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13073 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13074 | |
6c5b2ebe | 13075 | static std::vector<symtab_and_line> |
f00aae0f | 13076 | decode_location_default (struct breakpoint *b, |
626d2320 | 13077 | struct event_location *location, |
6c5b2ebe | 13078 | struct program_space *search_pspace) |
983af33b SDJ |
13079 | { |
13080 | struct linespec_result canonical; | |
13081 | ||
c2f4122d | 13082 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13083 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 13084 | b->filter.get ()); |
983af33b SDJ |
13085 | |
13086 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13087 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13088 | |
6c5b2ebe | 13089 | if (!canonical.lsals.empty ()) |
983af33b | 13090 | { |
6c5b2ebe PA |
13091 | const linespec_sals &lsal = canonical.lsals[0]; |
13092 | return std::move (lsal.sals); | |
983af33b | 13093 | } |
6c5b2ebe | 13094 | return {}; |
983af33b SDJ |
13095 | } |
13096 | ||
bf469271 | 13097 | /* Reset a breakpoint. */ |
c906108c | 13098 | |
bf469271 PA |
13099 | static void |
13100 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13101 | { |
fdf44873 TT |
13102 | input_radix = b->input_radix; |
13103 | set_language (b->language); | |
c906108c | 13104 | |
348d480f | 13105 | b->ops->re_set (b); |
c906108c SS |
13106 | } |
13107 | ||
c2f4122d PA |
13108 | /* Re-set breakpoint locations for the current program space. |
13109 | Locations bound to other program spaces are left untouched. */ | |
13110 | ||
c906108c | 13111 | void |
69de3c6a | 13112 | breakpoint_re_set (void) |
c906108c | 13113 | { |
c5aa993b | 13114 | { |
fdf44873 TT |
13115 | scoped_restore_current_language save_language; |
13116 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13117 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13118 | |
8e817061 JB |
13119 | /* breakpoint_re_set_one sets the current_language to the language |
13120 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13121 | before re-evaluating the breakpoint's location. This change can | |
13122 | unfortunately get undone by accident if the language_mode is set | |
13123 | to auto, and we either switch frames, or more likely in this context, | |
13124 | we select the current frame. | |
13125 | ||
13126 | We prevent this by temporarily turning the language_mode to | |
13127 | language_mode_manual. We restore it once all breakpoints | |
13128 | have been reset. */ | |
13129 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13130 | language_mode = language_mode_manual; | |
13131 | ||
5ed8105e PA |
13132 | /* Note: we must not try to insert locations until after all |
13133 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13134 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13135 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13136 | |
1428b37a | 13137 | for (breakpoint *b : all_breakpoints_safe ()) |
5ed8105e | 13138 | { |
a70b8144 | 13139 | try |
bf469271 PA |
13140 | { |
13141 | breakpoint_re_set_one (b); | |
13142 | } | |
230d2906 | 13143 | catch (const gdb_exception &ex) |
bf469271 PA |
13144 | { |
13145 | exception_fprintf (gdb_stderr, ex, | |
13146 | "Error in re-setting breakpoint %d: ", | |
13147 | b->number); | |
13148 | } | |
5ed8105e | 13149 | } |
5ed8105e PA |
13150 | |
13151 | jit_breakpoint_re_set (); | |
13152 | } | |
6c95b8df | 13153 | |
af02033e PP |
13154 | create_overlay_event_breakpoint (); |
13155 | create_longjmp_master_breakpoint (); | |
13156 | create_std_terminate_master_breakpoint (); | |
186c406b | 13157 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13158 | |
13159 | /* Now we can insert. */ | |
13160 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13161 | } |
13162 | \f | |
c906108c SS |
13163 | /* Reset the thread number of this breakpoint: |
13164 | ||
13165 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13166 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13167 | void |
fba45db2 | 13168 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13169 | { |
13170 | if (b->thread != -1) | |
13171 | { | |
00431a78 | 13172 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13173 | |
13174 | /* We're being called after following a fork. The new fork is | |
13175 | selected as current, and unless this was a vfork will have a | |
13176 | different program space from the original thread. Reset that | |
13177 | as well. */ | |
13178 | b->loc->pspace = current_program_space; | |
c906108c SS |
13179 | } |
13180 | } | |
13181 | ||
03ac34d5 MS |
13182 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13183 | If from_tty is nonzero, it prints a message to that effect, | |
13184 | which ends with a period (no newline). */ | |
13185 | ||
c906108c | 13186 | void |
fba45db2 | 13187 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13188 | { |
c906108c SS |
13189 | if (count < 0) |
13190 | count = 0; | |
13191 | ||
43892fdf | 13192 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 13193 | if (b->number == bptnum) |
01add95b SM |
13194 | { |
13195 | if (is_tracepoint (b)) | |
13196 | { | |
13197 | if (from_tty && count != 0) | |
6cb06a8c TT |
13198 | gdb_printf (_("Ignore count ignored for tracepoint %d."), |
13199 | bptnum); | |
01add95b SM |
13200 | return; |
13201 | } | |
13202 | ||
13203 | b->ignore_count = count; | |
13204 | if (from_tty) | |
13205 | { | |
13206 | if (count == 0) | |
6cb06a8c TT |
13207 | gdb_printf (_("Will stop next time " |
13208 | "breakpoint %d is reached."), | |
13209 | bptnum); | |
01add95b | 13210 | else if (count == 1) |
6cb06a8c TT |
13211 | gdb_printf (_("Will ignore next crossing of breakpoint %d."), |
13212 | bptnum); | |
01add95b | 13213 | else |
6cb06a8c TT |
13214 | gdb_printf (_("Will ignore next %d " |
13215 | "crossings of breakpoint %d."), | |
13216 | count, bptnum); | |
01add95b SM |
13217 | } |
13218 | gdb::observers::breakpoint_modified.notify (b); | |
13219 | return; | |
13220 | } | |
c906108c | 13221 | |
8a3fe4f8 | 13222 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13223 | } |
13224 | ||
c906108c SS |
13225 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13226 | ||
13227 | static void | |
0b39b52e | 13228 | ignore_command (const char *args, int from_tty) |
c906108c | 13229 | { |
0b39b52e | 13230 | const char *p = args; |
52f0bd74 | 13231 | int num; |
c906108c SS |
13232 | |
13233 | if (p == 0) | |
e2e0b3e5 | 13234 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13235 | |
c906108c | 13236 | num = get_number (&p); |
5c44784c | 13237 | if (num == 0) |
8a3fe4f8 | 13238 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13239 | if (*p == 0) |
8a3fe4f8 | 13240 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13241 | |
13242 | set_ignore_count (num, | |
13243 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13244 | from_tty); | |
221ea385 | 13245 | if (from_tty) |
6cb06a8c | 13246 | gdb_printf ("\n"); |
c906108c SS |
13247 | } |
13248 | \f | |
d0fe4701 XR |
13249 | |
13250 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13251 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13252 | |
13253 | static void | |
d0fe4701 XR |
13254 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13255 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13256 | { |
d0fe4701 XR |
13257 | if (bp_num_range.first == 0) |
13258 | { | |
13259 | warning (_("bad breakpoint number at or near '%d'"), | |
13260 | bp_num_range.first); | |
13261 | } | |
13262 | else | |
c906108c | 13263 | { |
d0fe4701 | 13264 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13265 | { |
d0fe4701 XR |
13266 | bool match = false; |
13267 | ||
1428b37a | 13268 | for (breakpoint *b : all_breakpoints_safe ()) |
d0fe4701 | 13269 | if (b->number == i) |
5c44784c | 13270 | { |
bfd28288 | 13271 | match = true; |
48649e1b | 13272 | function (b); |
11cf8741 | 13273 | break; |
5c44784c | 13274 | } |
bfd28288 | 13275 | if (!match) |
6cb06a8c | 13276 | gdb_printf (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13277 | } |
c906108c SS |
13278 | } |
13279 | } | |
13280 | ||
d0fe4701 XR |
13281 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13282 | ARGS. */ | |
13283 | ||
13284 | static void | |
13285 | map_breakpoint_numbers (const char *args, | |
13286 | gdb::function_view<void (breakpoint *)> function) | |
13287 | { | |
13288 | if (args == NULL || *args == '\0') | |
13289 | error_no_arg (_("one or more breakpoint numbers")); | |
13290 | ||
13291 | number_or_range_parser parser (args); | |
13292 | ||
13293 | while (!parser.finished ()) | |
13294 | { | |
13295 | int num = parser.get_number (); | |
13296 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13297 | } | |
13298 | } | |
13299 | ||
13300 | /* Return the breakpoint location structure corresponding to the | |
13301 | BP_NUM and LOC_NUM values. */ | |
13302 | ||
0d381245 | 13303 | static struct bp_location * |
d0fe4701 | 13304 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13305 | { |
43892fdf | 13306 | breakpoint *b = get_breakpoint (bp_num); |
0d381245 VP |
13307 | |
13308 | if (!b || b->number != bp_num) | |
d0fe4701 | 13309 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13310 | |
0d381245 | 13311 | if (loc_num == 0) |
d0fe4701 | 13312 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13313 | |
d0fe4701 | 13314 | int n = 0; |
40cb8ca5 | 13315 | for (bp_location *loc : b->locations ()) |
d0fe4701 XR |
13316 | if (++n == loc_num) |
13317 | return loc; | |
13318 | ||
13319 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13320 | } |
13321 | ||
95e95a6d PA |
13322 | /* Modes of operation for extract_bp_num. */ |
13323 | enum class extract_bp_kind | |
13324 | { | |
13325 | /* Extracting a breakpoint number. */ | |
13326 | bp, | |
13327 | ||
13328 | /* Extracting a location number. */ | |
13329 | loc, | |
13330 | }; | |
13331 | ||
13332 | /* Extract a breakpoint or location number (as determined by KIND) | |
13333 | from the string starting at START. TRAILER is a character which | |
13334 | can be found after the number. If you don't want a trailer, use | |
13335 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
13336 | string. This always returns a positive integer. */ | |
13337 | ||
13338 | static int | |
13339 | extract_bp_num (extract_bp_kind kind, const char *start, | |
13340 | int trailer, const char **end_out = NULL) | |
13341 | { | |
13342 | const char *end = start; | |
13343 | int num = get_number_trailer (&end, trailer); | |
13344 | if (num < 0) | |
13345 | error (kind == extract_bp_kind::bp | |
13346 | ? _("Negative breakpoint number '%.*s'") | |
13347 | : _("Negative breakpoint location number '%.*s'"), | |
13348 | int (end - start), start); | |
13349 | if (num == 0) | |
13350 | error (kind == extract_bp_kind::bp | |
13351 | ? _("Bad breakpoint number '%.*s'") | |
13352 | : _("Bad breakpoint location number '%.*s'"), | |
13353 | int (end - start), start); | |
13354 | ||
13355 | if (end_out != NULL) | |
13356 | *end_out = end; | |
13357 | return num; | |
13358 | } | |
13359 | ||
13360 | /* Extract a breakpoint or location range (as determined by KIND) in | |
13361 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
13362 | representing the (inclusive) range. The returned pair's elements | |
13363 | are always positive integers. */ | |
13364 | ||
13365 | static std::pair<int, int> | |
13366 | extract_bp_or_bp_range (extract_bp_kind kind, | |
13367 | const std::string &arg, | |
13368 | std::string::size_type arg_offset) | |
13369 | { | |
13370 | std::pair<int, int> range; | |
13371 | const char *bp_loc = &arg[arg_offset]; | |
13372 | std::string::size_type dash = arg.find ('-', arg_offset); | |
13373 | if (dash != std::string::npos) | |
13374 | { | |
13375 | /* bp_loc is a range (x-z). */ | |
13376 | if (arg.length () == dash + 1) | |
13377 | error (kind == extract_bp_kind::bp | |
13378 | ? _("Bad breakpoint number at or near: '%s'") | |
13379 | : _("Bad breakpoint location number at or near: '%s'"), | |
13380 | bp_loc); | |
13381 | ||
13382 | const char *end; | |
13383 | const char *start_first = bp_loc; | |
13384 | const char *start_second = &arg[dash + 1]; | |
13385 | range.first = extract_bp_num (kind, start_first, '-'); | |
13386 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
13387 | ||
13388 | if (range.first > range.second) | |
13389 | error (kind == extract_bp_kind::bp | |
13390 | ? _("Inverted breakpoint range at '%.*s'") | |
13391 | : _("Inverted breakpoint location range at '%.*s'"), | |
13392 | int (end - start_first), start_first); | |
13393 | } | |
13394 | else | |
13395 | { | |
13396 | /* bp_loc is a single value. */ | |
13397 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
13398 | range.second = range.first; | |
13399 | } | |
13400 | return range; | |
13401 | } | |
13402 | ||
d0fe4701 XR |
13403 | /* Extract the breakpoint/location range specified by ARG. Returns |
13404 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
13405 | BP_LOC_RANGE. | |
13406 | ||
13407 | ARG may be in any of the following forms: | |
13408 | ||
13409 | x where 'x' is a breakpoint number. | |
13410 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
13411 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
13412 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
13413 | location number range. | |
13414 | */ | |
13415 | ||
cc638e86 | 13416 | static void |
d0fe4701 XR |
13417 | extract_bp_number_and_location (const std::string &arg, |
13418 | std::pair<int, int> &bp_num_range, | |
13419 | std::pair<int, int> &bp_loc_range) | |
13420 | { | |
13421 | std::string::size_type dot = arg.find ('.'); | |
13422 | ||
13423 | if (dot != std::string::npos) | |
13424 | { | |
13425 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
13426 | ||
13427 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 13428 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 13429 | |
95e95a6d PA |
13430 | bp_num_range.first |
13431 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
13432 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 13433 | |
95e95a6d PA |
13434 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
13435 | arg, dot + 1); | |
d0fe4701 XR |
13436 | } |
13437 | else | |
13438 | { | |
13439 | /* Handle x and x-y cases. */ | |
d0fe4701 | 13440 | |
95e95a6d | 13441 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
13442 | bp_loc_range.first = 0; |
13443 | bp_loc_range.second = 0; | |
13444 | } | |
d0fe4701 XR |
13445 | } |
13446 | ||
13447 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
13448 | specifies whether to enable or disable. */ | |
13449 | ||
13450 | static void | |
13451 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
13452 | { | |
13453 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
13454 | if (loc != NULL) | |
13455 | { | |
b5fa468f TBA |
13456 | if (loc->disabled_by_cond && enable) |
13457 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
13458 | "cannot enable."), bp_num, loc_num); | |
13459 | ||
d0fe4701 XR |
13460 | if (loc->enabled != enable) |
13461 | { | |
13462 | loc->enabled = enable; | |
13463 | mark_breakpoint_location_modified (loc); | |
13464 | } | |
13465 | if (target_supports_enable_disable_tracepoint () | |
13466 | && current_trace_status ()->running && loc->owner | |
13467 | && is_tracepoint (loc->owner)) | |
13468 | target_disable_tracepoint (loc); | |
13469 | } | |
13470 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
13471 | |
13472 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
13473 | } |
13474 | ||
13475 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
13476 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
13477 | (inclusive) range of location numbers of that breakpoint to | |
13478 | enable/disable. ENABLE specifies whether to enable or disable the | |
13479 | location. */ | |
13480 | ||
13481 | static void | |
13482 | enable_disable_breakpoint_location_range (int bp_num, | |
13483 | std::pair<int, int> &bp_loc_range, | |
13484 | bool enable) | |
13485 | { | |
13486 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
13487 | enable_disable_bp_num_loc (bp_num, i, enable); | |
13488 | } | |
0d381245 | 13489 | |
1900040c MS |
13490 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13491 | If from_tty is nonzero, it prints a message to that effect, | |
13492 | which ends with a period (no newline). */ | |
13493 | ||
c906108c | 13494 | void |
fba45db2 | 13495 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
13496 | { |
13497 | /* Never disable a watchpoint scope breakpoint; we want to | |
13498 | hit them when we leave scope so we can delete both the | |
13499 | watchpoint and its scope breakpoint at that time. */ | |
13500 | if (bpt->type == bp_watchpoint_scope) | |
13501 | return; | |
13502 | ||
b5de0fa7 | 13503 | bpt->enable_state = bp_disabled; |
c906108c | 13504 | |
b775012e LM |
13505 | /* Mark breakpoint locations modified. */ |
13506 | mark_breakpoint_modified (bpt); | |
13507 | ||
d248b706 KY |
13508 | if (target_supports_enable_disable_tracepoint () |
13509 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13510 | { | |
40cb8ca5 | 13511 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13512 | target_disable_tracepoint (location); |
13513 | } | |
13514 | ||
44702360 | 13515 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 13516 | |
76727919 | 13517 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13518 | } |
13519 | ||
d0fe4701 XR |
13520 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
13521 | specified in ARGS. ARGS may be in any of the formats handled by | |
13522 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
13523 | or disable the breakpoints/locations. */ | |
13524 | ||
c906108c | 13525 | static void |
d0fe4701 | 13526 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 13527 | { |
c906108c | 13528 | if (args == 0) |
46c6471b | 13529 | { |
43892fdf | 13530 | for (breakpoint *bpt : all_breakpoints ()) |
46c6471b | 13531 | if (user_breakpoint_p (bpt)) |
d0fe4701 XR |
13532 | { |
13533 | if (enable) | |
13534 | enable_breakpoint (bpt); | |
13535 | else | |
13536 | disable_breakpoint (bpt); | |
13537 | } | |
46c6471b | 13538 | } |
9eaabc75 | 13539 | else |
0d381245 | 13540 | { |
cb791d59 | 13541 | std::string num = extract_arg (&args); |
9eaabc75 | 13542 | |
cb791d59 | 13543 | while (!num.empty ()) |
d248b706 | 13544 | { |
d0fe4701 | 13545 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 13546 | |
cc638e86 PA |
13547 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
13548 | ||
13549 | if (bp_loc_range.first == bp_loc_range.second | |
13550 | && bp_loc_range.first == 0) | |
d0fe4701 | 13551 | { |
cc638e86 PA |
13552 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
13553 | map_breakpoint_number_range (bp_num_range, | |
13554 | enable | |
13555 | ? enable_breakpoint | |
13556 | : disable_breakpoint); | |
13557 | } | |
13558 | else | |
13559 | { | |
13560 | /* Handle breakpoint ids with formats 'x.y' or | |
13561 | 'x.y-z'. */ | |
13562 | enable_disable_breakpoint_location_range | |
13563 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 13564 | } |
9eaabc75 | 13565 | num = extract_arg (&args); |
d248b706 | 13566 | } |
0d381245 | 13567 | } |
c906108c SS |
13568 | } |
13569 | ||
d0fe4701 XR |
13570 | /* The disable command disables the specified breakpoints/locations |
13571 | (or all defined breakpoints) so they're no longer effective in | |
13572 | stopping the inferior. ARGS may be in any of the forms defined in | |
13573 | extract_bp_number_and_location. */ | |
13574 | ||
13575 | static void | |
13576 | disable_command (const char *args, int from_tty) | |
13577 | { | |
13578 | enable_disable_command (args, from_tty, false); | |
13579 | } | |
13580 | ||
c906108c | 13581 | static void |
816338b5 SS |
13582 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
13583 | int count) | |
c906108c | 13584 | { |
afe38095 | 13585 | int target_resources_ok; |
c906108c SS |
13586 | |
13587 | if (bpt->type == bp_hardware_breakpoint) | |
13588 | { | |
13589 | int i; | |
c5aa993b | 13590 | i = hw_breakpoint_used_count (); |
53a5351d | 13591 | target_resources_ok = |
d92524f1 | 13592 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 13593 | i + 1, 0); |
c906108c | 13594 | if (target_resources_ok == 0) |
8a3fe4f8 | 13595 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 13596 | else if (target_resources_ok < 0) |
8a3fe4f8 | 13597 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
13598 | } |
13599 | ||
cc60f2e3 | 13600 | if (is_watchpoint (bpt)) |
c906108c | 13601 | { |
d07205c2 | 13602 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 13603 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 13604 | |
a70b8144 | 13605 | try |
c906108c | 13606 | { |
3a5c3e22 PA |
13607 | struct watchpoint *w = (struct watchpoint *) bpt; |
13608 | ||
1e718ff1 TJB |
13609 | orig_enable_state = bpt->enable_state; |
13610 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 13611 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 13612 | } |
230d2906 | 13613 | catch (const gdb_exception &e) |
c5aa993b | 13614 | { |
1e718ff1 | 13615 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
13616 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
13617 | bpt->number); | |
13618 | return; | |
c5aa993b | 13619 | } |
c906108c | 13620 | } |
0101ce28 | 13621 | |
b775012e LM |
13622 | bpt->enable_state = bp_enabled; |
13623 | ||
13624 | /* Mark breakpoint locations modified. */ | |
13625 | mark_breakpoint_modified (bpt); | |
13626 | ||
d248b706 KY |
13627 | if (target_supports_enable_disable_tracepoint () |
13628 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
13629 | { | |
40cb8ca5 | 13630 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
13631 | target_enable_tracepoint (location); |
13632 | } | |
13633 | ||
b4c291bb | 13634 | bpt->disposition = disposition; |
816338b5 | 13635 | bpt->enable_count = count; |
44702360 | 13636 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 13637 | |
76727919 | 13638 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
13639 | } |
13640 | ||
fe3f5fa8 | 13641 | |
c906108c | 13642 | void |
fba45db2 | 13643 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 13644 | { |
816338b5 | 13645 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
13646 | } |
13647 | ||
d0fe4701 XR |
13648 | /* The enable command enables the specified breakpoints/locations (or |
13649 | all defined breakpoints) so they once again become (or continue to | |
13650 | be) effective in stopping the inferior. ARGS may be in any of the | |
13651 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 13652 | |
c906108c | 13653 | static void |
981a3fb3 | 13654 | enable_command (const char *args, int from_tty) |
c906108c | 13655 | { |
d0fe4701 | 13656 | enable_disable_command (args, from_tty, true); |
c906108c SS |
13657 | } |
13658 | ||
c906108c | 13659 | static void |
4495129a | 13660 | enable_once_command (const char *args, int from_tty) |
c906108c | 13661 | { |
48649e1b TT |
13662 | map_breakpoint_numbers |
13663 | (args, [&] (breakpoint *b) | |
13664 | { | |
13665 | iterate_over_related_breakpoints | |
13666 | (b, [&] (breakpoint *bpt) | |
13667 | { | |
13668 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
13669 | }); | |
13670 | }); | |
816338b5 SS |
13671 | } |
13672 | ||
13673 | static void | |
4495129a | 13674 | enable_count_command (const char *args, int from_tty) |
816338b5 | 13675 | { |
b9d61307 SM |
13676 | int count; |
13677 | ||
13678 | if (args == NULL) | |
13679 | error_no_arg (_("hit count")); | |
13680 | ||
13681 | count = get_number (&args); | |
816338b5 | 13682 | |
48649e1b TT |
13683 | map_breakpoint_numbers |
13684 | (args, [&] (breakpoint *b) | |
13685 | { | |
13686 | iterate_over_related_breakpoints | |
13687 | (b, [&] (breakpoint *bpt) | |
13688 | { | |
13689 | enable_breakpoint_disp (bpt, disp_disable, count); | |
13690 | }); | |
13691 | }); | |
c906108c SS |
13692 | } |
13693 | ||
c906108c | 13694 | static void |
4495129a | 13695 | enable_delete_command (const char *args, int from_tty) |
c906108c | 13696 | { |
48649e1b TT |
13697 | map_breakpoint_numbers |
13698 | (args, [&] (breakpoint *b) | |
13699 | { | |
13700 | iterate_over_related_breakpoints | |
13701 | (b, [&] (breakpoint *bpt) | |
13702 | { | |
13703 | enable_breakpoint_disp (bpt, disp_del, 1); | |
13704 | }); | |
13705 | }); | |
c906108c SS |
13706 | } |
13707 | \f | |
1f3b5d1b PP |
13708 | /* Invalidate last known value of any hardware watchpoint if |
13709 | the memory which that value represents has been written to by | |
13710 | GDB itself. */ | |
13711 | ||
13712 | static void | |
8de0566d YQ |
13713 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
13714 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
13715 | const bfd_byte *data) |
13716 | { | |
43892fdf | 13717 | for (breakpoint *bp : all_breakpoints ()) |
1f3b5d1b | 13718 | if (bp->enable_state == bp_enabled |
3a5c3e22 | 13719 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 13720 | { |
3a5c3e22 | 13721 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 13722 | |
850645cf | 13723 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 | 13724 | { |
40cb8ca5 | 13725 | for (bp_location *loc : bp->locations ()) |
3a5c3e22 PA |
13726 | if (loc->loc_type == bp_loc_hardware_watchpoint |
13727 | && loc->address + loc->length > addr | |
13728 | && addr + len > loc->address) | |
13729 | { | |
3a5c3e22 | 13730 | wp->val = NULL; |
4c1d86d9 | 13731 | wp->val_valid = false; |
3a5c3e22 PA |
13732 | } |
13733 | } | |
1f3b5d1b PP |
13734 | } |
13735 | } | |
13736 | ||
8181d85f DJ |
13737 | /* Create and insert a breakpoint for software single step. */ |
13738 | ||
13739 | void | |
6c95b8df | 13740 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 13741 | const address_space *aspace, |
4a64f543 | 13742 | CORE_ADDR next_pc) |
8181d85f | 13743 | { |
7c16b83e PA |
13744 | struct thread_info *tp = inferior_thread (); |
13745 | struct symtab_and_line sal; | |
13746 | CORE_ADDR pc = next_pc; | |
8181d85f | 13747 | |
34b7e8a6 PA |
13748 | if (tp->control.single_step_breakpoints == NULL) |
13749 | { | |
13750 | tp->control.single_step_breakpoints | |
5d5658a1 | 13751 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 13752 | } |
8181d85f | 13753 | |
7c16b83e PA |
13754 | sal = find_pc_line (pc, 0); |
13755 | sal.pc = pc; | |
13756 | sal.section = find_pc_overlay (pc); | |
13757 | sal.explicit_pc = 1; | |
34b7e8a6 | 13758 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 13759 | |
7c16b83e | 13760 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
13761 | } |
13762 | ||
93f9a11f YQ |
13763 | /* Insert single step breakpoints according to the current state. */ |
13764 | ||
13765 | int | |
13766 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
13767 | { | |
f5ea389a | 13768 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 13769 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 13770 | |
f5ea389a | 13771 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 13772 | |
a0ff9e1a | 13773 | if (!next_pcs.empty ()) |
93f9a11f | 13774 | { |
f5ea389a | 13775 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 13776 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 13777 | |
a0ff9e1a | 13778 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
13779 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
13780 | ||
93f9a11f YQ |
13781 | return 1; |
13782 | } | |
13783 | else | |
13784 | return 0; | |
13785 | } | |
13786 | ||
34b7e8a6 | 13787 | /* See breakpoint.h. */ |
f02253f1 HZ |
13788 | |
13789 | int | |
7c16b83e | 13790 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 13791 | const address_space *aspace, |
7c16b83e | 13792 | CORE_ADDR pc) |
1aafd4da | 13793 | { |
40cb8ca5 | 13794 | for (bp_location *loc : bp->locations ()) |
7c16b83e PA |
13795 | if (loc->inserted |
13796 | && breakpoint_location_address_match (loc, aspace, pc)) | |
13797 | return 1; | |
1aafd4da | 13798 | |
7c16b83e | 13799 | return 0; |
ef370185 JB |
13800 | } |
13801 | ||
13802 | /* Check whether a software single-step breakpoint is inserted at | |
13803 | PC. */ | |
13804 | ||
13805 | int | |
accd0bcd | 13806 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
13807 | CORE_ADDR pc) |
13808 | { | |
43892fdf | 13809 | for (breakpoint *bpt : all_breakpoints ()) |
34b7e8a6 PA |
13810 | { |
13811 | if (bpt->type == bp_single_step | |
13812 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
13813 | return 1; | |
13814 | } | |
13815 | return 0; | |
1aafd4da UW |
13816 | } |
13817 | ||
1042e4c0 SS |
13818 | /* Tracepoint-specific operations. */ |
13819 | ||
13820 | /* Set tracepoint count to NUM. */ | |
13821 | static void | |
13822 | set_tracepoint_count (int num) | |
13823 | { | |
13824 | tracepoint_count = num; | |
4fa62494 | 13825 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
13826 | } |
13827 | ||
70221824 | 13828 | static void |
0b39b52e | 13829 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 13830 | { |
ffc2605c TT |
13831 | event_location_up location = string_to_event_location (&arg, |
13832 | current_language); | |
bac7c5cf GB |
13833 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
13834 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 13835 | |
558a9d82 | 13836 | create_breakpoint (get_current_arch (), |
ffc2605c | 13837 | location.get (), |
10a636cc | 13838 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13839 | 0 /* tempflag */, |
13840 | bp_tracepoint /* type_wanted */, | |
13841 | 0 /* Ignore count */, | |
13842 | pending_break_support, | |
13843 | ops, | |
13844 | from_tty, | |
13845 | 1 /* enabled */, | |
13846 | 0 /* internal */, 0); | |
1042e4c0 SS |
13847 | } |
13848 | ||
70221824 | 13849 | static void |
0b39b52e | 13850 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 13851 | { |
ffc2605c TT |
13852 | event_location_up location = string_to_event_location (&arg, |
13853 | current_language); | |
558a9d82 | 13854 | create_breakpoint (get_current_arch (), |
ffc2605c | 13855 | location.get (), |
10a636cc | 13856 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13857 | 0 /* tempflag */, |
13858 | bp_fast_tracepoint /* type_wanted */, | |
13859 | 0 /* Ignore count */, | |
13860 | pending_break_support, | |
13861 | &tracepoint_breakpoint_ops, | |
13862 | from_tty, | |
13863 | 1 /* enabled */, | |
13864 | 0 /* internal */, 0); | |
0fb4aa4b PA |
13865 | } |
13866 | ||
13867 | /* strace command implementation. Creates a static tracepoint. */ | |
13868 | ||
70221824 | 13869 | static void |
0b39b52e | 13870 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 13871 | { |
983af33b | 13872 | struct breakpoint_ops *ops; |
ffc2605c | 13873 | event_location_up location; |
983af33b SDJ |
13874 | |
13875 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
13876 | or with a normal static tracepoint. */ | |
61012eef | 13877 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
13878 | { |
13879 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 13880 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 13881 | } |
983af33b | 13882 | else |
f00aae0f KS |
13883 | { |
13884 | ops = &tracepoint_breakpoint_ops; | |
13885 | location = string_to_event_location (&arg, current_language); | |
13886 | } | |
983af33b | 13887 | |
558a9d82 | 13888 | create_breakpoint (get_current_arch (), |
ffc2605c | 13889 | location.get (), |
10a636cc | 13890 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
13891 | 0 /* tempflag */, |
13892 | bp_static_tracepoint /* type_wanted */, | |
13893 | 0 /* Ignore count */, | |
13894 | pending_break_support, | |
13895 | ops, | |
13896 | from_tty, | |
13897 | 1 /* enabled */, | |
13898 | 0 /* internal */, 0); | |
7a697b8d SS |
13899 | } |
13900 | ||
409873ef SS |
13901 | /* Set up a fake reader function that gets command lines from a linked |
13902 | list that was acquired during tracepoint uploading. */ | |
13903 | ||
13904 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 13905 | static int next_cmd; |
409873ef SS |
13906 | |
13907 | static char * | |
13908 | read_uploaded_action (void) | |
13909 | { | |
a18ba4e4 | 13910 | char *rslt = nullptr; |
409873ef | 13911 | |
a18ba4e4 SM |
13912 | if (next_cmd < this_utp->cmd_strings.size ()) |
13913 | { | |
67aa1f3c | 13914 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
13915 | next_cmd++; |
13916 | } | |
409873ef SS |
13917 | |
13918 | return rslt; | |
13919 | } | |
13920 | ||
00bf0b85 SS |
13921 | /* Given information about a tracepoint as recorded on a target (which |
13922 | can be either a live system or a trace file), attempt to create an | |
13923 | equivalent GDB tracepoint. This is not a reliable process, since | |
13924 | the target does not necessarily have all the information used when | |
13925 | the tracepoint was originally defined. */ | |
13926 | ||
d9b3f62e | 13927 | struct tracepoint * |
00bf0b85 | 13928 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 13929 | { |
f2fc3015 TT |
13930 | const char *addr_str; |
13931 | char small_buf[100]; | |
d9b3f62e | 13932 | struct tracepoint *tp; |
fd9b8c24 | 13933 | |
409873ef | 13934 | if (utp->at_string) |
67aa1f3c | 13935 | addr_str = utp->at_string.get (); |
409873ef SS |
13936 | else |
13937 | { | |
13938 | /* In the absence of a source location, fall back to raw | |
13939 | address. Since there is no way to confirm that the address | |
13940 | means the same thing as when the trace was started, warn the | |
13941 | user. */ | |
3e43a32a MS |
13942 | warning (_("Uploaded tracepoint %d has no " |
13943 | "source location, using raw address"), | |
409873ef | 13944 | utp->number); |
8c042590 | 13945 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
13946 | addr_str = small_buf; |
13947 | } | |
13948 | ||
13949 | /* There's not much we can do with a sequence of bytecodes. */ | |
13950 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
13951 | warning (_("Uploaded tracepoint %d condition " |
13952 | "has no source form, ignoring it"), | |
409873ef | 13953 | utp->number); |
d5551862 | 13954 | |
ffc2605c TT |
13955 | event_location_up location = string_to_event_location (&addr_str, |
13956 | current_language); | |
8cdf0e15 | 13957 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 13958 | location.get (), |
67aa1f3c | 13959 | utp->cond_string.get (), -1, addr_str, |
10a636cc | 13960 | false /* force_condition */, |
e7e0cddf | 13961 | 0 /* parse cond/thread */, |
8cdf0e15 | 13962 | 0 /* tempflag */, |
0fb4aa4b | 13963 | utp->type /* type_wanted */, |
8cdf0e15 VP |
13964 | 0 /* Ignore count */, |
13965 | pending_break_support, | |
348d480f | 13966 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 13967 | 0 /* from_tty */, |
84f4c1fe | 13968 | utp->enabled /* enabled */, |
44f238bb PA |
13969 | 0 /* internal */, |
13970 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 13971 | return NULL; |
fd9b8c24 | 13972 | |
409873ef | 13973 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
13974 | tp = get_tracepoint (tracepoint_count); |
13975 | gdb_assert (tp != NULL); | |
d5551862 | 13976 | |
00bf0b85 SS |
13977 | if (utp->pass > 0) |
13978 | { | |
8c042590 | 13979 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 13980 | tp->number); |
00bf0b85 | 13981 | |
409873ef | 13982 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
13983 | } |
13984 | ||
409873ef SS |
13985 | /* If we have uploaded versions of the original commands, set up a |
13986 | special-purpose "reader" function and call the usual command line | |
13987 | reader, then pass the result to the breakpoint command-setting | |
13988 | function. */ | |
a18ba4e4 | 13989 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 13990 | { |
12973681 | 13991 | counted_command_line cmd_list; |
00bf0b85 | 13992 | |
409873ef | 13993 | this_utp = utp; |
3149d8c1 | 13994 | next_cmd = 0; |
d5551862 | 13995 | |
60b3cef2 | 13996 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 13997 | |
c1fc2657 | 13998 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 13999 | } |
a18ba4e4 SM |
14000 | else if (!utp->actions.empty () |
14001 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14002 | warning (_("Uploaded tracepoint %d actions " |
14003 | "have no source form, ignoring them"), | |
409873ef | 14004 | utp->number); |
00bf0b85 | 14005 | |
f196051f | 14006 | /* Copy any status information that might be available. */ |
c1fc2657 | 14007 | tp->hit_count = utp->hit_count; |
f196051f SS |
14008 | tp->traceframe_usage = utp->traceframe_usage; |
14009 | ||
00bf0b85 | 14010 | return tp; |
d9b3f62e | 14011 | } |
00bf0b85 | 14012 | |
1042e4c0 SS |
14013 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14014 | omitted. */ | |
14015 | ||
14016 | static void | |
1d12d88f | 14017 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14018 | { |
79a45e25 | 14019 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14020 | int num_printed; |
1042e4c0 | 14021 | |
5c458ae8 | 14022 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
14023 | |
14024 | if (num_printed == 0) | |
1042e4c0 | 14025 | { |
e5a67952 | 14026 | if (args == NULL || *args == '\0') |
112e8700 | 14027 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14028 | else |
112e8700 | 14029 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14030 | } |
ad443146 SS |
14031 | |
14032 | default_collect_info (); | |
1042e4c0 SS |
14033 | } |
14034 | ||
4a64f543 | 14035 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14036 | Not supported by all targets. */ |
14037 | static void | |
5fed81ff | 14038 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14039 | { |
14040 | enable_command (args, from_tty); | |
14041 | } | |
14042 | ||
4a64f543 | 14043 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14044 | Not supported by all targets. */ |
14045 | static void | |
5fed81ff | 14046 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14047 | { |
14048 | disable_command (args, from_tty); | |
14049 | } | |
14050 | ||
4a64f543 | 14051 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14052 | static void |
4495129a | 14053 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14054 | { |
1042e4c0 SS |
14055 | dont_repeat (); |
14056 | ||
14057 | if (arg == 0) | |
14058 | { | |
14059 | int breaks_to_delete = 0; | |
14060 | ||
14061 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
14062 | Do not delete internal or call-dummy breakpoints, these |
14063 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 14064 | argument. */ |
f6d17b2b | 14065 | for (breakpoint *tp : all_tracepoints ()) |
1428b37a | 14066 | if (is_tracepoint (tp) && user_breakpoint_p (tp)) |
1042e4c0 SS |
14067 | { |
14068 | breaks_to_delete = 1; | |
14069 | break; | |
14070 | } | |
1042e4c0 SS |
14071 | |
14072 | /* Ask user only if there are some breakpoints to delete. */ | |
14073 | if (!from_tty | |
14074 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14075 | { | |
1428b37a | 14076 | for (breakpoint *b : all_breakpoints_safe ()) |
46c6471b | 14077 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14078 | delete_breakpoint (b); |
1042e4c0 SS |
14079 | } |
14080 | } | |
14081 | else | |
48649e1b | 14082 | map_breakpoint_numbers |
b926417a | 14083 | (arg, [&] (breakpoint *br) |
48649e1b | 14084 | { |
b926417a | 14085 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14086 | }); |
1042e4c0 SS |
14087 | } |
14088 | ||
197f0a60 TT |
14089 | /* Helper function for trace_pass_command. */ |
14090 | ||
14091 | static void | |
d9b3f62e | 14092 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14093 | { |
d9b3f62e | 14094 | tp->pass_count = count; |
76727919 | 14095 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 | 14096 | if (from_tty) |
6cb06a8c TT |
14097 | gdb_printf (_("Setting tracepoint %d's passcount to %d\n"), |
14098 | tp->number, count); | |
197f0a60 TT |
14099 | } |
14100 | ||
1042e4c0 SS |
14101 | /* Set passcount for tracepoint. |
14102 | ||
14103 | First command argument is passcount, second is tracepoint number. | |
14104 | If tracepoint number omitted, apply to most recently defined. | |
14105 | Also accepts special argument "all". */ | |
14106 | ||
14107 | static void | |
0b39b52e | 14108 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14109 | { |
d9b3f62e | 14110 | struct tracepoint *t1; |
0b39b52e | 14111 | ULONGEST count; |
1042e4c0 SS |
14112 | |
14113 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14114 | error (_("passcount command requires an " |
14115 | "argument (count + optional TP num)")); | |
1042e4c0 | 14116 | |
0b39b52e | 14117 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14118 | |
529480d0 | 14119 | args = skip_spaces (args); |
1042e4c0 SS |
14120 | if (*args && strncasecmp (args, "all", 3) == 0) |
14121 | { | |
14122 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
14123 | if (*args) |
14124 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14125 | |
f6d17b2b | 14126 | for (breakpoint *b : all_tracepoints ()) |
01add95b SM |
14127 | { |
14128 | t1 = (struct tracepoint *) b; | |
14129 | trace_pass_set_count (t1, count, from_tty); | |
14130 | } | |
197f0a60 TT |
14131 | } |
14132 | else if (*args == '\0') | |
1042e4c0 | 14133 | { |
5fa1d40e | 14134 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14135 | if (t1) |
197f0a60 TT |
14136 | trace_pass_set_count (t1, count, from_tty); |
14137 | } | |
14138 | else | |
14139 | { | |
bfd28288 PA |
14140 | number_or_range_parser parser (args); |
14141 | while (!parser.finished ()) | |
1042e4c0 | 14142 | { |
bfd28288 | 14143 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14144 | if (t1) |
14145 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14146 | } |
14147 | } | |
1042e4c0 SS |
14148 | } |
14149 | ||
d9b3f62e | 14150 | struct tracepoint * |
1042e4c0 SS |
14151 | get_tracepoint (int num) |
14152 | { | |
f6d17b2b | 14153 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14154 | if (t->number == num) |
d9b3f62e | 14155 | return (struct tracepoint *) t; |
1042e4c0 SS |
14156 | |
14157 | return NULL; | |
14158 | } | |
14159 | ||
d5551862 SS |
14160 | /* Find the tracepoint with the given target-side number (which may be |
14161 | different from the tracepoint number after disconnecting and | |
14162 | reconnecting). */ | |
14163 | ||
d9b3f62e | 14164 | struct tracepoint * |
d5551862 SS |
14165 | get_tracepoint_by_number_on_target (int num) |
14166 | { | |
f6d17b2b | 14167 | for (breakpoint *b : all_tracepoints ()) |
d9b3f62e PA |
14168 | { |
14169 | struct tracepoint *t = (struct tracepoint *) b; | |
14170 | ||
14171 | if (t->number_on_target == num) | |
14172 | return t; | |
14173 | } | |
d5551862 SS |
14174 | |
14175 | return NULL; | |
14176 | } | |
14177 | ||
1042e4c0 | 14178 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14179 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14180 | If the argument is missing, the most recent tracepoint |
14181 | (tracepoint_count) is returned. */ | |
14182 | ||
d9b3f62e | 14183 | struct tracepoint * |
0b39b52e | 14184 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14185 | number_or_range_parser *parser) |
1042e4c0 | 14186 | { |
1042e4c0 | 14187 | int tpnum; |
0b39b52e | 14188 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14189 | |
bfd28288 | 14190 | if (parser != NULL) |
197f0a60 | 14191 | { |
bfd28288 PA |
14192 | gdb_assert (!parser->finished ()); |
14193 | tpnum = parser->get_number (); | |
197f0a60 TT |
14194 | } |
14195 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14196 | tpnum = tracepoint_count; |
1042e4c0 | 14197 | else |
197f0a60 | 14198 | tpnum = get_number (arg); |
1042e4c0 SS |
14199 | |
14200 | if (tpnum <= 0) | |
14201 | { | |
14202 | if (instring && *instring) | |
6cb06a8c TT |
14203 | gdb_printf (_("bad tracepoint number at or near '%s'\n"), |
14204 | instring); | |
1042e4c0 | 14205 | else |
6cb06a8c | 14206 | gdb_printf (_("No previous tracepoint\n")); |
1042e4c0 SS |
14207 | return NULL; |
14208 | } | |
14209 | ||
f6d17b2b | 14210 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14211 | if (t->number == tpnum) |
d9b3f62e | 14212 | return (struct tracepoint *) t; |
1042e4c0 | 14213 | |
6cb06a8c | 14214 | gdb_printf ("No tracepoint number %d.\n", tpnum); |
1042e4c0 SS |
14215 | return NULL; |
14216 | } | |
14217 | ||
d9b3f62e PA |
14218 | void |
14219 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14220 | { | |
14221 | if (b->thread != -1) | |
6cb06a8c | 14222 | gdb_printf (fp, " thread %d", b->thread); |
d9b3f62e PA |
14223 | |
14224 | if (b->task != 0) | |
6cb06a8c | 14225 | gdb_printf (fp, " task %d", b->task); |
d9b3f62e | 14226 | |
6cb06a8c | 14227 | gdb_printf (fp, "\n"); |
d9b3f62e PA |
14228 | } |
14229 | ||
6149aea9 PA |
14230 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14231 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14232 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 14233 | true. */ |
6149aea9 | 14234 | |
1042e4c0 | 14235 | static void |
4495129a | 14236 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 14237 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 | 14238 | { |
6149aea9 | 14239 | int any = 0; |
6149aea9 | 14240 | int extra_trace_bits = 0; |
1042e4c0 | 14241 | |
6149aea9 PA |
14242 | if (filename == 0 || *filename == 0) |
14243 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14244 | |
14245 | /* See if we have anything to save. */ | |
43892fdf | 14246 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
14247 | { |
14248 | /* Skip internal and momentary breakpoints. */ | |
14249 | if (!user_breakpoint_p (tp)) | |
14250 | continue; | |
6149aea9 | 14251 | |
01add95b SM |
14252 | /* If we have a filter, only save the breakpoints it accepts. */ |
14253 | if (filter && !filter (tp)) | |
14254 | continue; | |
6149aea9 | 14255 | |
01add95b | 14256 | any = 1; |
6149aea9 | 14257 | |
01add95b SM |
14258 | if (is_tracepoint (tp)) |
14259 | { | |
14260 | extra_trace_bits = 1; | |
6149aea9 | 14261 | |
01add95b SM |
14262 | /* We can stop searching. */ |
14263 | break; | |
14264 | } | |
14265 | } | |
6149aea9 PA |
14266 | |
14267 | if (!any) | |
1042e4c0 | 14268 | { |
6149aea9 | 14269 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14270 | return; |
14271 | } | |
14272 | ||
ee0c3293 | 14273 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14274 | |
14275 | stdio_file fp; | |
14276 | ||
ee0c3293 | 14277 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14278 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14279 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14280 | |
6149aea9 | 14281 | if (extra_trace_bits) |
d7e74731 | 14282 | save_trace_state_variables (&fp); |
8bf6485c | 14283 | |
43892fdf | 14284 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
14285 | { |
14286 | /* Skip internal and momentary breakpoints. */ | |
14287 | if (!user_breakpoint_p (tp)) | |
14288 | continue; | |
8bf6485c | 14289 | |
01add95b SM |
14290 | /* If we have a filter, only save the breakpoints it accepts. */ |
14291 | if (filter && !filter (tp)) | |
14292 | continue; | |
6149aea9 | 14293 | |
01add95b | 14294 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 14295 | |
01add95b SM |
14296 | /* Note, we can't rely on tp->number for anything, as we can't |
14297 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14298 | instead. */ | |
6149aea9 | 14299 | |
01add95b | 14300 | if (tp->cond_string) |
6f781ee3 | 14301 | fp.printf (" condition $bpnum %s\n", tp->cond_string.get ()); |
6149aea9 | 14302 | |
01add95b SM |
14303 | if (tp->ignore_count) |
14304 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); | |
6149aea9 | 14305 | |
01add95b SM |
14306 | if (tp->type != bp_dprintf && tp->commands) |
14307 | { | |
14308 | fp.puts (" commands\n"); | |
1042e4c0 | 14309 | |
01add95b SM |
14310 | current_uiout->redirect (&fp); |
14311 | try | |
14312 | { | |
14313 | print_command_lines (current_uiout, tp->commands.get (), 2); | |
14314 | } | |
14315 | catch (const gdb_exception &ex) | |
14316 | { | |
14317 | current_uiout->redirect (NULL); | |
14318 | throw; | |
14319 | } | |
6149aea9 | 14320 | |
01add95b SM |
14321 | current_uiout->redirect (NULL); |
14322 | fp.puts (" end\n"); | |
14323 | } | |
6149aea9 | 14324 | |
01add95b SM |
14325 | if (tp->enable_state == bp_disabled) |
14326 | fp.puts ("disable $bpnum\n"); | |
6149aea9 | 14327 | |
01add95b SM |
14328 | /* If this is a multi-location breakpoint, check if the locations |
14329 | should be individually disabled. Watchpoint locations are | |
14330 | special, and not user visible. */ | |
14331 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
14332 | { | |
14333 | int n = 1; | |
40cb8ca5 | 14334 | |
01add95b SM |
14335 | for (bp_location *loc : tp->locations ()) |
14336 | { | |
14337 | if (!loc->enabled) | |
14338 | fp.printf ("disable $bpnum.%d\n", n); | |
14339 | ||
14340 | n++; | |
14341 | } | |
14342 | } | |
14343 | } | |
8bf6485c | 14344 | |
e0700ba4 SM |
14345 | if (extra_trace_bits && !default_collect.empty ()) |
14346 | fp.printf ("set default-collect %s\n", default_collect.c_str ()); | |
8bf6485c | 14347 | |
1042e4c0 | 14348 | if (from_tty) |
6cb06a8c | 14349 | gdb_printf (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
14350 | } |
14351 | ||
14352 | /* The `save breakpoints' command. */ | |
14353 | ||
14354 | static void | |
4495129a | 14355 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
14356 | { |
14357 | save_breakpoints (args, from_tty, NULL); | |
14358 | } | |
14359 | ||
14360 | /* The `save tracepoints' command. */ | |
14361 | ||
14362 | static void | |
4495129a | 14363 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
14364 | { |
14365 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
14366 | } |
14367 | ||
c906108c | 14368 | \f |
629500fa KS |
14369 | /* This help string is used to consolidate all the help string for specifying |
14370 | locations used by several commands. */ | |
14371 | ||
14372 | #define LOCATION_HELP_STRING \ | |
14373 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
14374 | source filename, function name, label name, and line number.\n\ | |
14375 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
14376 | function \"fact\" in the file \"factorial.c\", use\n\ | |
14377 | \"factorial.c:fact:the_top\".\n\ | |
14378 | \n\ | |
14379 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
14380 | program. Example: To specify the fourth byte past the start function\n\ | |
14381 | \"main\", use \"*main + 4\".\n\ | |
14382 | \n\ | |
14383 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
14384 | syntax to specify location parameters.\n\ | |
14385 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
14386 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
14387 | -function fact -label the_top\".\n\ |
14388 | \n\ | |
14389 | By default, a specified function is matched against the program's\n\ | |
14390 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
14391 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
14392 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
14393 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 14394 | specified name as a complete fully-qualified name instead." |
629500fa | 14395 | |
4a64f543 MS |
14396 | /* This help string is used for the break, hbreak, tbreak and thbreak |
14397 | commands. It is defined as a macro to prevent duplication. | |
14398 | COMMAND should be a string constant containing the name of the | |
14399 | command. */ | |
629500fa | 14400 | |
31e2b00f | 14401 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
14402 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
14403 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
14404 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
14405 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
14406 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
14407 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
14408 | LOCATION may be a linespec, address, or explicit location as described\n\ |
14409 | below.\n\ | |
14410 | \n\ | |
dc10affe PA |
14411 | With no LOCATION, uses current execution address of the selected\n\ |
14412 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
14413 | \n\ |
14414 | THREADNUM is the number from \"info threads\".\n\ | |
14415 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
14416 | \n\ |
14417 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
14418 | it is invalid for all current locations.\n\ | |
89549d7f | 14419 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14420 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
14421 | conditions are different.\n\ | |
31e2b00f AS |
14422 | \n\ |
14423 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
14424 | ||
44feb3ce TT |
14425 | /* List of subcommands for "catch". */ |
14426 | static struct cmd_list_element *catch_cmdlist; | |
14427 | ||
14428 | /* List of subcommands for "tcatch". */ | |
14429 | static struct cmd_list_element *tcatch_cmdlist; | |
14430 | ||
9ac4176b | 14431 | void |
a121b7c1 | 14432 | add_catch_command (const char *name, const char *docstring, |
5538b03c | 14433 | cmd_func_ftype *func, |
625e8578 | 14434 | completer_ftype *completer, |
44feb3ce TT |
14435 | void *user_data_catch, |
14436 | void *user_data_tcatch) | |
14437 | { | |
14438 | struct cmd_list_element *command; | |
14439 | ||
0450cc4c | 14440 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14441 | &catch_cmdlist); |
5538b03c | 14442 | command->func = func; |
0f8e2034 | 14443 | command->set_context (user_data_catch); |
a96d9b2e | 14444 | set_cmd_completer (command, completer); |
44feb3ce | 14445 | |
0450cc4c | 14446 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce | 14447 | &tcatch_cmdlist); |
5538b03c | 14448 | command->func = func; |
0f8e2034 | 14449 | command->set_context (user_data_tcatch); |
a96d9b2e | 14450 | set_cmd_completer (command, completer); |
44feb3ce TT |
14451 | } |
14452 | ||
0574c78f GB |
14453 | /* Zero if any of the breakpoint's locations could be a location where |
14454 | functions have been inlined, nonzero otherwise. */ | |
14455 | ||
14456 | static int | |
14457 | is_non_inline_function (struct breakpoint *b) | |
14458 | { | |
14459 | /* The shared library event breakpoint is set on the address of a | |
14460 | non-inline function. */ | |
14461 | if (b->type == bp_shlib_event) | |
14462 | return 1; | |
14463 | ||
14464 | return 0; | |
14465 | } | |
14466 | ||
14467 | /* Nonzero if the specified PC cannot be a location where functions | |
14468 | have been inlined. */ | |
14469 | ||
14470 | int | |
accd0bcd | 14471 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
c272a98c | 14472 | const target_waitstatus &ws) |
0574c78f | 14473 | { |
43892fdf | 14474 | for (breakpoint *b : all_breakpoints ()) |
0574c78f GB |
14475 | { |
14476 | if (!is_non_inline_function (b)) | |
14477 | continue; | |
14478 | ||
40cb8ca5 | 14479 | for (bp_location *bl : b->locations ()) |
0574c78f GB |
14480 | { |
14481 | if (!bl->shlib_disabled | |
09ac7c10 | 14482 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
14483 | return 1; |
14484 | } | |
14485 | } | |
14486 | ||
14487 | return 0; | |
14488 | } | |
14489 | ||
2f202fde JK |
14490 | /* Remove any references to OBJFILE which is going to be freed. */ |
14491 | ||
14492 | void | |
14493 | breakpoint_free_objfile (struct objfile *objfile) | |
14494 | { | |
48d7020b | 14495 | for (bp_location *loc : all_bp_locations ()) |
3c86fae3 | 14496 | if (loc->symtab != NULL && loc->symtab->compunit ()->objfile () == objfile) |
2f202fde JK |
14497 | loc->symtab = NULL; |
14498 | } | |
14499 | ||
2060206e PA |
14500 | void |
14501 | initialize_breakpoint_ops (void) | |
14502 | { | |
14503 | static int initialized = 0; | |
14504 | ||
14505 | struct breakpoint_ops *ops; | |
14506 | ||
14507 | if (initialized) | |
14508 | return; | |
14509 | initialized = 1; | |
14510 | ||
14511 | /* The breakpoint_ops structure to be inherit by all kinds of | |
14512 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
14513 | internal and momentary breakpoints, etc.). */ | |
14514 | ops = &bkpt_base_breakpoint_ops; | |
14515 | *ops = base_breakpoint_ops; | |
14516 | ops->re_set = bkpt_re_set; | |
14517 | ops->insert_location = bkpt_insert_location; | |
14518 | ops->remove_location = bkpt_remove_location; | |
14519 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
66895797 TT |
14520 | ops->create_sals_from_location = create_sals_from_location_default; |
14521 | ops->create_breakpoints_sal = create_breakpoints_sal_default; | |
5f700d83 | 14522 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
14523 | |
14524 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
14525 | ops = &bkpt_breakpoint_ops; | |
14526 | *ops = bkpt_base_breakpoint_ops; | |
14527 | ops->re_set = bkpt_re_set; | |
14528 | ops->resources_needed = bkpt_resources_needed; | |
14529 | ops->print_it = bkpt_print_it; | |
14530 | ops->print_mention = bkpt_print_mention; | |
14531 | ops->print_recreate = bkpt_print_recreate; | |
14532 | ||
14533 | /* Ranged breakpoints. */ | |
14534 | ops = &ranged_breakpoint_ops; | |
14535 | *ops = bkpt_breakpoint_ops; | |
14536 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
14537 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
14538 | ops->print_it = print_it_ranged_breakpoint; | |
14539 | ops->print_one = print_one_ranged_breakpoint; | |
14540 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
14541 | ops->print_mention = print_mention_ranged_breakpoint; | |
14542 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
14543 | ||
14544 | /* Internal breakpoints. */ | |
14545 | ops = &internal_breakpoint_ops; | |
14546 | *ops = bkpt_base_breakpoint_ops; | |
14547 | ops->re_set = internal_bkpt_re_set; | |
14548 | ops->check_status = internal_bkpt_check_status; | |
14549 | ops->print_it = internal_bkpt_print_it; | |
14550 | ops->print_mention = internal_bkpt_print_mention; | |
14551 | ||
14552 | /* Momentary breakpoints. */ | |
14553 | ops = &momentary_breakpoint_ops; | |
14554 | *ops = bkpt_base_breakpoint_ops; | |
14555 | ops->re_set = momentary_bkpt_re_set; | |
14556 | ops->check_status = momentary_bkpt_check_status; | |
14557 | ops->print_it = momentary_bkpt_print_it; | |
14558 | ops->print_mention = momentary_bkpt_print_mention; | |
14559 | ||
55aa24fb SDJ |
14560 | /* Probe breakpoints. */ |
14561 | ops = &bkpt_probe_breakpoint_ops; | |
14562 | *ops = bkpt_breakpoint_ops; | |
14563 | ops->insert_location = bkpt_probe_insert_location; | |
14564 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
14565 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
14566 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 14567 | |
2060206e PA |
14568 | /* Tracepoints. */ |
14569 | ops = &tracepoint_breakpoint_ops; | |
14570 | *ops = base_breakpoint_ops; | |
14571 | ops->re_set = tracepoint_re_set; | |
14572 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
14573 | ops->print_one_detail = tracepoint_print_one_detail; | |
14574 | ops->print_mention = tracepoint_print_mention; | |
14575 | ops->print_recreate = tracepoint_print_recreate; | |
66895797 TT |
14576 | ops->create_sals_from_location = create_sals_from_location_default; |
14577 | ops->create_breakpoints_sal = create_breakpoints_sal_default; | |
5f700d83 | 14578 | ops->decode_location = tracepoint_decode_location; |
983af33b | 14579 | |
55aa24fb SDJ |
14580 | /* Probe tracepoints. */ |
14581 | ops = &tracepoint_probe_breakpoint_ops; | |
14582 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
14583 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
14584 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 14585 | |
983af33b SDJ |
14586 | /* Static tracepoints with marker (`-m'). */ |
14587 | ops = &strace_marker_breakpoint_ops; | |
14588 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 14589 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 14590 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 14591 | ops->decode_location = strace_marker_decode_location; |
2060206e | 14592 | |
e7e0cddf SS |
14593 | ops = &dprintf_breakpoint_ops; |
14594 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 14595 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
14596 | ops->resources_needed = bkpt_resources_needed; |
14597 | ops->print_it = bkpt_print_it; | |
14598 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 14599 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 14600 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 14601 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
14602 | } |
14603 | ||
8bfd80db YQ |
14604 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
14605 | ||
14606 | static struct cmd_list_element *enablebreaklist = NULL; | |
14607 | ||
8588b356 SM |
14608 | /* See breakpoint.h. */ |
14609 | ||
14610 | cmd_list_element *commands_cmd_element = nullptr; | |
14611 | ||
6c265988 | 14612 | void _initialize_breakpoint (); |
c906108c | 14613 | void |
6c265988 | 14614 | _initialize_breakpoint () |
c906108c SS |
14615 | { |
14616 | struct cmd_list_element *c; | |
14617 | ||
2060206e PA |
14618 | initialize_breakpoint_ops (); |
14619 | ||
c90e7d63 SM |
14620 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib, |
14621 | "breakpoint"); | |
14622 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile, | |
14623 | "breakpoint"); | |
14624 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change, | |
14625 | "breakpoint"); | |
84acb35a | 14626 | |
c906108c SS |
14627 | breakpoint_chain = 0; |
14628 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
14629 | before a breakpoint is set. */ | |
14630 | breakpoint_count = 0; | |
14631 | ||
1042e4c0 SS |
14632 | tracepoint_count = 0; |
14633 | ||
1bedd215 AC |
14634 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
14635 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
14636 | Usage is `ignore N COUNT'.")); | |
c906108c | 14637 | |
8588b356 SM |
14638 | commands_cmd_element = add_com ("commands", class_breakpoint, |
14639 | commands_command, _("\ | |
18da0c51 MG |
14640 | Set commands to be executed when the given breakpoints are hit.\n\ |
14641 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
14642 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
14643 | (e.g. `5-7').\n\ | |
c906108c SS |
14644 | With no argument, the targeted breakpoint is the last one set.\n\ |
14645 | The commands themselves follow starting on the next line.\n\ | |
14646 | Type a line containing \"end\" to indicate the end of them.\n\ | |
14647 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 14648 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 14649 | |
b1d4d8d1 TBA |
14650 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
14651 | static std::string condition_command_help | |
14652 | = gdb::option::build_help (_("\ | |
1bedd215 | 14653 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 14654 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 14655 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
14656 | \n\ |
14657 | Options:\n\ | |
14658 | %OPTIONS%"), cc_opts); | |
14659 | ||
14660 | c = add_com ("condition", class_breakpoint, condition_command, | |
14661 | condition_command_help.c_str ()); | |
14662 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 14663 | |
1bedd215 | 14664 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 14665 | Set a temporary breakpoint.\n\ |
c906108c SS |
14666 | Like \"break\" except the breakpoint is only temporary,\n\ |
14667 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
14668 | by using \"enable delete\" on the breakpoint number.\n\ |
14669 | \n" | |
14670 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 14671 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 14672 | |
1bedd215 | 14673 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 14674 | Set a hardware assisted breakpoint.\n\ |
c906108c | 14675 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
14676 | some target hardware may not have this support.\n\ |
14677 | \n" | |
14678 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 14679 | set_cmd_completer (c, location_completer); |
c906108c | 14680 | |
1bedd215 | 14681 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 14682 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 14683 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
14684 | so it will be deleted when hit.\n\ |
14685 | \n" | |
14686 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 14687 | set_cmd_completer (c, location_completer); |
c906108c | 14688 | |
3947f654 SM |
14689 | cmd_list_element *enable_cmd |
14690 | = add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ | |
590042fc PW |
14691 | Enable all or some breakpoints.\n\ |
14692 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14693 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14694 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
14695 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 14696 | With a subcommand you can enable temporarily."), |
3947f654 | 14697 | &enablelist, 1, &cmdlist); |
c906108c | 14698 | |
3947f654 | 14699 | add_com_alias ("en", enable_cmd, class_breakpoint, 1); |
c906108c | 14700 | |
84951ab5 | 14701 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
14702 | Enable all or some breakpoints.\n\ |
14703 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14704 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
14705 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 14706 | May be abbreviated to simply \"enable\"."), |
2f822da5 | 14707 | &enablebreaklist, 1, &enablelist); |
c906108c | 14708 | |
1a966eab | 14709 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14710 | Enable some breakpoints for one hit.\n\ |
14711 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 14712 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
14713 | &enablebreaklist); |
14714 | ||
1a966eab | 14715 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14716 | Enable some breakpoints and delete when hit.\n\ |
14717 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 14718 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14719 | &enablebreaklist); |
14720 | ||
816338b5 | 14721 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
14722 | Enable some breakpoints for COUNT hits.\n\ |
14723 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14724 | If a breakpoint is hit while enabled in this fashion,\n\ |
14725 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
14726 | &enablebreaklist); | |
14727 | ||
1a966eab | 14728 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
14729 | Enable some breakpoints and delete when hit.\n\ |
14730 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 14731 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
14732 | &enablelist); |
14733 | ||
1a966eab | 14734 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
14735 | Enable some breakpoints for one hit.\n\ |
14736 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 14737 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
14738 | &enablelist); |
14739 | ||
14740 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
14741 | Enable some breakpoints for COUNT hits.\n\ |
14742 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
14743 | If a breakpoint is hit while enabled in this fashion,\n\ |
14744 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
14745 | &enablelist); |
14746 | ||
3947f654 SM |
14747 | cmd_list_element *disable_cmd |
14748 | = add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ | |
590042fc PW |
14749 | Disable all or some breakpoints.\n\ |
14750 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14751 | Arguments are breakpoint numbers with spaces in between.\n\ |
14752 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14753 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
3947f654 SM |
14754 | &disablelist, 1, &cmdlist); |
14755 | add_com_alias ("dis", disable_cmd, class_breakpoint, 1); | |
14756 | add_com_alias ("disa", disable_cmd, class_breakpoint, 1); | |
c906108c | 14757 | |
57b4f16e | 14758 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
14759 | Disable all or some breakpoints.\n\ |
14760 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14761 | Arguments are breakpoint numbers with spaces in between.\n\ |
14762 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 14763 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 14764 | This command may be abbreviated \"disable\"."), |
c906108c SS |
14765 | &disablelist); |
14766 | ||
3947f654 SM |
14767 | cmd_list_element *delete_cmd |
14768 | = add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ | |
590042fc PW |
14769 | Delete all or some breakpoints.\n\ |
14770 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14771 | Arguments are breakpoint numbers with spaces in between.\n\ |
14772 | To delete all breakpoints, give no argument.\n\ | |
14773 | \n\ | |
590042fc | 14774 | Also a prefix command for deletion of other GDB objects."), |
3947f654 SM |
14775 | &deletelist, 1, &cmdlist); |
14776 | add_com_alias ("d", delete_cmd, class_breakpoint, 1); | |
14777 | add_com_alias ("del", delete_cmd, class_breakpoint, 1); | |
c906108c | 14778 | |
57b4f16e | 14779 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
14780 | Delete all or some breakpoints or auto-display expressions.\n\ |
14781 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
14782 | Arguments are breakpoint numbers with spaces in between.\n\ |
14783 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 14784 | This command may be abbreviated \"delete\"."), |
c906108c SS |
14785 | &deletelist); |
14786 | ||
3947f654 SM |
14787 | cmd_list_element *clear_cmd |
14788 | = add_com ("clear", class_breakpoint, clear_command, _("\ | |
629500fa KS |
14789 | Clear breakpoint at specified location.\n\ |
14790 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
14791 | \n\ |
14792 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 14793 | is executing in.\n" |
89549d7f | 14794 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 14795 | See also the \"delete\" command which clears breakpoints by number.")); |
3947f654 | 14796 | add_com_alias ("cl", clear_cmd, class_breakpoint, 1); |
c906108c | 14797 | |
3947f654 SM |
14798 | cmd_list_element *break_cmd |
14799 | = add_com ("break", class_breakpoint, break_command, _("\ | |
629500fa | 14800 | Set breakpoint at specified location.\n" |
31e2b00f | 14801 | BREAK_ARGS_HELP ("break"))); |
3947f654 | 14802 | set_cmd_completer (break_cmd, location_completer); |
c94fdfd0 | 14803 | |
3947f654 SM |
14804 | add_com_alias ("b", break_cmd, class_run, 1); |
14805 | add_com_alias ("br", break_cmd, class_run, 1); | |
14806 | add_com_alias ("bre", break_cmd, class_run, 1); | |
14807 | add_com_alias ("brea", break_cmd, class_run, 1); | |
c906108c | 14808 | |
e0f25bd9 SM |
14809 | cmd_list_element *info_breakpoints_cmd |
14810 | = add_info ("breakpoints", info_breakpoints_command, _("\ | |
e5a67952 | 14811 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
14812 | The \"Type\" column indicates one of:\n\ |
14813 | \tbreakpoint - normal breakpoint\n\ | |
14814 | \twatchpoint - watchpoint\n\ | |
14815 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
14816 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
14817 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
14818 | address and file/line number respectively.\n\ |
14819 | \n\ | |
14820 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14821 | are set to the address of the last breakpoint listed unless the command\n\ |
14822 | is prefixed with \"server \".\n\n\ | |
c906108c | 14823 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 14824 | breakpoint set.")); |
c906108c | 14825 | |
e0f25bd9 | 14826 | add_info_alias ("b", info_breakpoints_cmd, 1); |
6b04bdb7 | 14827 | |
1a966eab AC |
14828 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
14829 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
14830 | The \"Type\" column indicates one of:\n\ |
14831 | \tbreakpoint - normal breakpoint\n\ | |
14832 | \twatchpoint - watchpoint\n\ | |
14833 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
14834 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
14835 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
14836 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
14837 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
14838 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
14839 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
14840 | address and file/line number respectively.\n\ |
14841 | \n\ | |
14842 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14843 | are set to the address of the last breakpoint listed unless the command\n\ |
14844 | is prefixed with \"server \".\n\n\ | |
c906108c | 14845 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 14846 | breakpoint set."), |
c906108c SS |
14847 | &maintenanceinfolist); |
14848 | ||
3b6acaee | 14849 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 14850 | Set catchpoints to catch events."), |
2f822da5 | 14851 | &catch_cmdlist, |
3b6acaee | 14852 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14853 | |
3b6acaee | 14854 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 14855 | Set temporary catchpoints to catch events."), |
2f822da5 | 14856 | &tcatch_cmdlist, |
3b6acaee | 14857 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 14858 | |
a15a5258 AB |
14859 | const auto opts = make_watch_options_def_group (nullptr); |
14860 | ||
14861 | static const std::string watch_help = gdb::option::build_help (_("\ | |
14862 | Set a watchpoint for EXPRESSION.\n\ | |
14863 | Usage: watch [-location] EXPRESSION\n\ | |
14864 | \n\ | |
14865 | Options:\n\ | |
14866 | %OPTIONS%\n\ | |
14867 | \n\ | |
c906108c | 14868 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
14869 | an expression changes."), opts); |
14870 | c = add_com ("watch", class_breakpoint, watch_command, | |
14871 | watch_help.c_str ()); | |
14872 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14873 | ||
14874 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
14875 | Set a read watchpoint for EXPRESSION.\n\ | |
14876 | Usage: rwatch [-location] EXPRESSION\n\ | |
14877 | \n\ | |
14878 | Options:\n\ | |
14879 | %OPTIONS%\n\ | |
14880 | \n\ | |
14881 | A read watchpoint stops execution of your program whenever the value of\n\ | |
14882 | an expression is read."), opts); | |
14883 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
14884 | rwatch_help.c_str ()); | |
14885 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
14886 | ||
14887 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
14888 | Set an access watchpoint for EXPRESSION.\n\ | |
14889 | Usage: awatch [-location] EXPRESSION\n\ | |
14890 | \n\ | |
14891 | Options:\n\ | |
14892 | %OPTIONS%\n\ | |
14893 | \n\ | |
14894 | An access watchpoint stops execution of your program whenever the value\n\ | |
14895 | of an expression is either read or written."), opts); | |
14896 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
14897 | awatch_help.c_str ()); | |
14898 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 14899 | |
11db9430 | 14900 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 14901 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 14902 | |
920d2a44 AC |
14903 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
14904 | respond to changes - contrary to the description. */ | |
85c07804 AC |
14905 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
14906 | &can_use_hw_watchpoints, _("\ | |
14907 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
14908 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
14909 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
14910 | such is available. (However, any hardware watchpoints that were\n\ | |
14911 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
14912 | hardware.)"), |
14913 | NULL, | |
920d2a44 | 14914 | show_can_use_hw_watchpoints, |
85c07804 | 14915 | &setlist, &showlist); |
c906108c SS |
14916 | |
14917 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 14918 | |
1042e4c0 SS |
14919 | /* Tracepoint manipulation commands. */ |
14920 | ||
3947f654 SM |
14921 | cmd_list_element *trace_cmd |
14922 | = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 14923 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
14924 | \n" |
14925 | BREAK_ARGS_HELP ("trace") "\n\ | |
14926 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
3947f654 | 14927 | set_cmd_completer (trace_cmd, location_completer); |
1042e4c0 | 14928 | |
3947f654 SM |
14929 | add_com_alias ("tp", trace_cmd, class_breakpoint, 0); |
14930 | add_com_alias ("tr", trace_cmd, class_breakpoint, 1); | |
14931 | add_com_alias ("tra", trace_cmd, class_breakpoint, 1); | |
14932 | add_com_alias ("trac", trace_cmd, class_breakpoint, 1); | |
1042e4c0 | 14933 | |
7a697b8d | 14934 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 14935 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
14936 | \n" |
14937 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
14938 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14939 | set_cmd_completer (c, location_completer); | |
14940 | ||
0fb4aa4b | 14941 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 14942 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
14943 | \n\ |
14944 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
14945 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
14946 | or -m MARKER_ID.\n\n\ | |
14947 | If a marker id is specified, probe the marker with that name. With\n\ | |
14948 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
14949 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
14950 | This collects arbitrary user data passed in the probe point call to the\n\ | |
14951 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
14952 | by printing the $_sdata variable like any other convenience variable.\n\ | |
14953 | \n\ | |
14954 | CONDITION is a boolean expression.\n\ | |
89549d7f | 14955 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
14956 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
14957 | conditions are different.\n\ | |
0fb4aa4b PA |
14958 | \n\ |
14959 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
14960 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14961 | set_cmd_completer (c, location_completer); | |
14962 | ||
e0f25bd9 SM |
14963 | cmd_list_element *info_tracepoints_cmd |
14964 | = add_info ("tracepoints", info_tracepoints_command, _("\ | |
e5a67952 | 14965 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
14966 | Convenience variable \"$tpnum\" contains the number of the\n\ |
14967 | last tracepoint set.")); | |
14968 | ||
e0f25bd9 | 14969 | add_info_alias ("tp", info_tracepoints_cmd, 1); |
1042e4c0 | 14970 | |
5e84b7ee SM |
14971 | cmd_list_element *delete_tracepoints_cmd |
14972 | = add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
1042e4c0 SS |
14973 | Delete specified tracepoints.\n\ |
14974 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14975 | No argument means delete all tracepoints."), | |
14976 | &deletelist); | |
5e84b7ee | 14977 | add_alias_cmd ("tr", delete_tracepoints_cmd, class_trace, 1, &deletelist); |
1042e4c0 SS |
14978 | |
14979 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
14980 | Disable specified tracepoints.\n\ | |
14981 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14982 | No argument means disable all tracepoints."), | |
14983 | &disablelist); | |
14984 | deprecate_cmd (c, "disable"); | |
14985 | ||
14986 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
14987 | Enable specified tracepoints.\n\ | |
14988 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14989 | No argument means enable all tracepoints."), | |
14990 | &enablelist); | |
14991 | deprecate_cmd (c, "enable"); | |
14992 | ||
14993 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
14994 | Set the passcount for a tracepoint.\n\ | |
14995 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
14996 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
14997 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
14998 | ||
0743fc83 TT |
14999 | add_basic_prefix_cmd ("save", class_breakpoint, |
15000 | _("Save breakpoint definitions as a script."), | |
2f822da5 | 15001 | &save_cmdlist, |
0743fc83 | 15002 | 0/*allow-unknown*/, &cmdlist); |
6149aea9 PA |
15003 | |
15004 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15005 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15006 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15007 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15008 | session to restore them."), | |
15009 | &save_cmdlist); | |
15010 | set_cmd_completer (c, filename_completer); | |
15011 | ||
3947f654 SM |
15012 | cmd_list_element *save_tracepoints_cmd |
15013 | = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15014 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15015 | Use the 'source' command in another debug session to restore them."), |
15016 | &save_cmdlist); | |
3947f654 | 15017 | set_cmd_completer (save_tracepoints_cmd, filename_completer); |
1042e4c0 | 15018 | |
3947f654 | 15019 | c = add_com_alias ("save-tracepoints", save_tracepoints_cmd, class_trace, 0); |
6149aea9 PA |
15020 | deprecate_cmd (c, "save tracepoints"); |
15021 | ||
f54bdb6d SM |
15022 | add_setshow_prefix_cmd ("breakpoint", class_maintenance, |
15023 | _("\ | |
590042fc | 15024 | Breakpoint specific settings.\n\ |
fa8d40ab | 15025 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15026 | pending breakpoint behavior."), |
f54bdb6d | 15027 | _("\ |
590042fc | 15028 | Breakpoint specific settings.\n\ |
fa8d40ab | 15029 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15030 | pending breakpoint behavior."), |
f54bdb6d SM |
15031 | &breakpoint_set_cmdlist, &breakpoint_show_cmdlist, |
15032 | &setlist, &showlist); | |
fa8d40ab | 15033 | |
7915a72c AC |
15034 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15035 | &pending_break_support, _("\ | |
15036 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15037 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15038 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15039 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15040 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15041 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15042 | NULL, |
920d2a44 | 15043 | show_pending_break_support, |
6e1d7d6c AC |
15044 | &breakpoint_set_cmdlist, |
15045 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15046 | |
15047 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15048 | |
15049 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15050 | &automatic_hardware_breakpoints, _("\ | |
15051 | Set automatic usage of hardware breakpoints."), _("\ | |
15052 | Show automatic usage of hardware breakpoints."), _("\ | |
15053 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15054 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15055 | a warning will be emitted for such breakpoints."), | |
15056 | NULL, | |
15057 | show_automatic_hardware_breakpoints, | |
15058 | &breakpoint_set_cmdlist, | |
15059 | &breakpoint_show_cmdlist); | |
74960c60 | 15060 | |
a25a5a45 PA |
15061 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15062 | &always_inserted_mode, _("\ | |
74960c60 VP |
15063 | Set mode for inserting breakpoints."), _("\ |
15064 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15065 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15066 | they're created, kept inserted even when execution stops, and removed\n\ | |
15067 | only when the user deletes them. When this mode is off (the default),\n\ | |
15068 | breakpoints are inserted only when execution continues, and removed\n\ | |
15069 | when execution stops."), | |
72d0e2c5 YQ |
15070 | NULL, |
15071 | &show_always_inserted_mode, | |
15072 | &breakpoint_set_cmdlist, | |
15073 | &breakpoint_show_cmdlist); | |
f1310107 | 15074 | |
b775012e LM |
15075 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15076 | condition_evaluation_enums, | |
15077 | &condition_evaluation_mode_1, _("\ | |
15078 | Set mode of breakpoint condition evaluation."), _("\ | |
15079 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15080 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15081 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15082 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15083 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15084 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15085 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 15086 | be set to \"host\"."), |
b775012e LM |
15087 | &set_condition_evaluation_mode, |
15088 | &show_condition_evaluation_mode, | |
15089 | &breakpoint_set_cmdlist, | |
15090 | &breakpoint_show_cmdlist); | |
15091 | ||
f1310107 TJB |
15092 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15093 | Set a breakpoint for an address range.\n\ | |
15094 | break-range START-LOCATION, END-LOCATION\n\ | |
15095 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15096 | LINENUM, for that line in the current file,\n\ | |
15097 | FILE:LINENUM, for that line in that file,\n\ | |
15098 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 15099 | or the start of the range\n\ |
f1310107 TJB |
15100 | FUNCTION, for the first line in that function,\n\ |
15101 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15102 | *ADDRESS, for the instruction at that address.\n\ | |
15103 | \n\ | |
15104 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15105 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15106 | range (including START-LOCATION and END-LOCATION).")); | |
15107 | ||
e7e0cddf | 15108 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15109 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15110 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15111 | location may be a linespec, explicit, or address location.\n" |
15112 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15113 | set_cmd_completer (c, location_completer); |
15114 | ||
15115 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15116 | dprintf_style_enums, &dprintf_style, _("\ | |
15117 | Set the style of usage for dynamic printf."), _("\ | |
15118 | Show the style of usage for dynamic printf."), _("\ | |
15119 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15120 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15121 | console, as with the \"printf\" command.\n\ | |
15122 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15123 | program; by default printf(), but you can choose a different function or\n\ | |
15124 | output stream by setting dprintf-function and dprintf-channel."), | |
15125 | update_dprintf_commands, NULL, | |
15126 | &setlist, &showlist); | |
15127 | ||
e7e0cddf SS |
15128 | add_setshow_string_cmd ("dprintf-function", class_support, |
15129 | &dprintf_function, _("\ | |
590042fc PW |
15130 | Set the function to use for dynamic printf."), _("\ |
15131 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
15132 | update_dprintf_commands, NULL, |
15133 | &setlist, &showlist); | |
15134 | ||
e7e0cddf SS |
15135 | add_setshow_string_cmd ("dprintf-channel", class_support, |
15136 | &dprintf_channel, _("\ | |
590042fc PW |
15137 | Set the channel to use for dynamic printf."), _("\ |
15138 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
15139 | update_dprintf_commands, NULL, |
15140 | &setlist, &showlist); | |
15141 | ||
d3ce09f5 SS |
15142 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
15143 | &disconnected_dprintf, _("\ | |
15144 | Set whether dprintf continues after GDB disconnects."), _("\ | |
15145 | Show whether dprintf continues after GDB disconnects."), _("\ | |
15146 | Use this to let dprintf commands continue to hit and produce output\n\ | |
15147 | even if GDB disconnects or detaches from the target."), | |
15148 | NULL, | |
15149 | NULL, | |
15150 | &setlist, &showlist); | |
15151 | ||
15152 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
15153 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
15154 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
15155 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
15156 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 15157 | |
491144b5 | 15158 | automatic_hardware_breakpoints = true; |
f3b1572e | 15159 | |
c90e7d63 SM |
15160 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed, |
15161 | "breakpoint"); | |
15162 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints, | |
15163 | "breakpoint"); | |
c906108c | 15164 | } |