Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
b811d2c2 | 3 | Copyright (C) 1986-2020 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
d55e5aa6 | 21 | #include "arch-utils.h" |
4de283e4 TT |
22 | #include <ctype.h> |
23 | #include "hashtab.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
c906108c | 26 | #include "breakpoint.h" |
4de283e4 TT |
27 | #include "tracepoint.h" |
28 | #include "gdbtypes.h" | |
c906108c | 29 | #include "expression.h" |
d55e5aa6 | 30 | #include "gdbcore.h" |
4de283e4 TT |
31 | #include "gdbcmd.h" |
32 | #include "value.h" | |
33 | #include "command.h" | |
c906108c | 34 | #include "inferior.h" |
45741a9c | 35 | #include "infrun.h" |
4de283e4 TT |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
c906108c | 38 | #include "language.h" |
4de283e4 TT |
39 | #include "gdb-demangle.h" |
40 | #include "filenames.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
d55e5aa6 | 43 | #include "objfiles.h" |
4de283e4 TT |
44 | #include "source.h" |
45 | #include "linespec.h" | |
46 | #include "completer.h" | |
47 | #include "ui-out.h" | |
48 | #include "cli/cli-script.h" | |
49 | #include "block.h" | |
50 | #include "solib.h" | |
51 | #include "solist.h" | |
d55e5aa6 | 52 | #include "observable.h" |
4de283e4 TT |
53 | #include "memattr.h" |
54 | #include "ada-lang.h" | |
55 | #include "top.h" | |
56 | #include "valprint.h" | |
57 | #include "jit.h" | |
65d79d4b | 58 | #include "parser-defs.h" |
4de283e4 | 59 | #include "gdb_regex.h" |
55aa24fb | 60 | #include "probe.h" |
4de283e4 | 61 | #include "cli/cli-utils.h" |
d55e5aa6 | 62 | #include "stack.h" |
4de283e4 TT |
63 | #include "ax-gdb.h" |
64 | #include "dummy-frame.h" | |
65 | #include "interps.h" | |
268a13a5 | 66 | #include "gdbsupport/format.h" |
cfc31633 | 67 | #include "thread-fsm.h" |
5d5658a1 | 68 | #include "tid-parse.h" |
4de283e4 | 69 | #include "cli/cli-style.h" |
d3ce09f5 | 70 | |
1042e4c0 | 71 | /* readline include files */ |
073bbbb0 | 72 | #include "readline/tilde.h" |
1042e4c0 SS |
73 | |
74 | /* readline defines this. */ | |
75 | #undef savestring | |
76 | ||
034dad6f | 77 | #include "mi/mi-common.h" |
6dddc817 | 78 | #include "extension.h" |
325fac50 | 79 | #include <algorithm> |
5ed8105e | 80 | #include "progspace-and-thread.h" |
268a13a5 TT |
81 | #include "gdbsupport/array-view.h" |
82 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 83 | |
4a64f543 | 84 | /* Prototypes for local functions. */ |
c906108c | 85 | |
896b6bda | 86 | static void map_breakpoint_numbers (const char *, |
48649e1b | 87 | gdb::function_view<void (breakpoint *)>); |
c906108c | 88 | |
348d480f PA |
89 | static void breakpoint_re_set_default (struct breakpoint *); |
90 | ||
f00aae0f | 91 | static void |
626d2320 | 92 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
93 | struct linespec_result *canonical, |
94 | enum bptype type_wanted); | |
983af33b SDJ |
95 | |
96 | static void create_breakpoints_sal_default (struct gdbarch *, | |
97 | struct linespec_result *, | |
e1e01040 PA |
98 | gdb::unique_xmalloc_ptr<char>, |
99 | gdb::unique_xmalloc_ptr<char>, | |
100 | enum bptype, | |
983af33b SDJ |
101 | enum bpdisp, int, int, |
102 | int, | |
103 | const struct breakpoint_ops *, | |
44f238bb | 104 | int, int, int, unsigned); |
983af33b | 105 | |
6c5b2ebe | 106 | static std::vector<symtab_and_line> decode_location_default |
626d2320 | 107 | (struct breakpoint *b, struct event_location *location, |
6c5b2ebe | 108 | struct program_space *search_pspace); |
983af33b | 109 | |
a6535de1 TT |
110 | static int can_use_hardware_watchpoint |
111 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 112 | |
a14ed312 | 113 | static void mention (struct breakpoint *); |
c906108c | 114 | |
348d480f PA |
115 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
116 | enum bptype, | |
c0a91b2b | 117 | const struct breakpoint_ops *); |
3742cc8b YQ |
118 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
119 | const struct symtab_and_line *); | |
120 | ||
4a64f543 MS |
121 | /* This function is used in gdbtk sources and thus can not be made |
122 | static. */ | |
63c252f8 | 123 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 124 | struct symtab_and_line, |
c0a91b2b TT |
125 | enum bptype, |
126 | const struct breakpoint_ops *); | |
c906108c | 127 | |
06edf0c0 PA |
128 | static struct breakpoint * |
129 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
130 | enum bptype type, | |
a1aa2221 LM |
131 | const struct breakpoint_ops *ops, |
132 | int loc_enabled); | |
06edf0c0 | 133 | |
76897487 KB |
134 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
135 | ||
a6d9a66e UW |
136 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
137 | CORE_ADDR bpaddr, | |
88f7da05 | 138 | enum bptype bptype); |
76897487 | 139 | |
6c95b8df PA |
140 | static void describe_other_breakpoints (struct gdbarch *, |
141 | struct program_space *, CORE_ADDR, | |
5af949e3 | 142 | struct obj_section *, int); |
c906108c | 143 | |
85d721b8 PA |
144 | static int watchpoint_locations_match (struct bp_location *loc1, |
145 | struct bp_location *loc2); | |
146 | ||
7f32a4d5 PA |
147 | static int breakpoint_locations_match (struct bp_location *loc1, |
148 | struct bp_location *loc2, | |
149 | bool sw_hw_bps_match = false); | |
150 | ||
f1310107 | 151 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 152 | const struct address_space *aspace, |
f1310107 TJB |
153 | CORE_ADDR addr); |
154 | ||
d35ae833 | 155 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 156 | const address_space *, |
d35ae833 PA |
157 | CORE_ADDR, int); |
158 | ||
834c0d03 | 159 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 160 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 161 | |
e514a9d6 | 162 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 163 | |
a14ed312 | 164 | static int hw_breakpoint_used_count (void); |
c906108c | 165 | |
a1398e0c PA |
166 | static int hw_watchpoint_use_count (struct breakpoint *); |
167 | ||
168 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
169 | enum bptype type, | |
170 | int *other_type_used); | |
c906108c | 171 | |
816338b5 SS |
172 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
173 | int count); | |
c906108c | 174 | |
fe3f5fa8 | 175 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
176 | static void incref_bp_location (struct bp_location *loc); |
177 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 178 | |
39d61571 | 179 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 180 | |
44702360 PA |
181 | /* update_global_location_list's modes of operation wrt to whether to |
182 | insert locations now. */ | |
183 | enum ugll_insert_mode | |
184 | { | |
185 | /* Don't insert any breakpoint locations into the inferior, only | |
186 | remove already-inserted locations that no longer should be | |
187 | inserted. Functions that delete a breakpoint or breakpoints | |
188 | should specify this mode, so that deleting a breakpoint doesn't | |
189 | have the side effect of inserting the locations of other | |
190 | breakpoints that are marked not-inserted, but should_be_inserted | |
191 | returns true on them. | |
192 | ||
193 | This behavior is useful is situations close to tear-down -- e.g., | |
194 | after an exec, while the target still has execution, but | |
195 | breakpoint shadows of the previous executable image should *NOT* | |
196 | be restored to the new image; or before detaching, where the | |
197 | target still has execution and wants to delete breakpoints from | |
198 | GDB's lists, and all breakpoints had already been removed from | |
199 | the inferior. */ | |
200 | UGLL_DONT_INSERT, | |
201 | ||
a25a5a45 PA |
202 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
203 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
204 | UGLL_MAY_INSERT, |
205 | ||
a25a5a45 PA |
206 | /* Insert locations now, irrespective of |
207 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
208 | stopped right now, and the user did "continue". We need to | |
209 | insert breakpoints _before_ resuming the target, but | |
210 | UGLL_MAY_INSERT wouldn't insert them, because | |
211 | breakpoints_should_be_inserted_now returns false at that point, | |
212 | as no thread is running yet. */ | |
04086b45 | 213 | UGLL_INSERT |
44702360 PA |
214 | }; |
215 | ||
216 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 217 | |
44702360 | 218 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 219 | |
74960c60 | 220 | static void insert_breakpoint_locations (void); |
a5606eee | 221 | |
0b39b52e | 222 | static void trace_pass_command (const char *, int); |
1042e4c0 | 223 | |
558a9d82 YQ |
224 | static void set_tracepoint_count (int num); |
225 | ||
f2478a7e | 226 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 227 | |
b775012e LM |
228 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
229 | ||
983af33b SDJ |
230 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
231 | otherwise. */ | |
232 | ||
233 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 234 | |
2060206e PA |
235 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
236 | that are implemented on top of software or hardware breakpoints | |
237 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
238 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
239 | ||
240 | /* Internal breakpoints class type. */ | |
06edf0c0 | 241 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
242 | |
243 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
244 | static struct breakpoint_ops momentary_breakpoint_ops; |
245 | ||
2060206e PA |
246 | /* The breakpoint_ops structure to be used in regular user created |
247 | breakpoints. */ | |
248 | struct breakpoint_ops bkpt_breakpoint_ops; | |
249 | ||
55aa24fb SDJ |
250 | /* Breakpoints set on probes. */ |
251 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
252 | ||
bac7c5cf GB |
253 | /* Tracepoints set on probes. */ |
254 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
255 | ||
e7e0cddf | 256 | /* Dynamic printf class type. */ |
c5867ab6 | 257 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 258 | |
d3ce09f5 SS |
259 | /* The style in which to perform a dynamic printf. This is a user |
260 | option because different output options have different tradeoffs; | |
261 | if GDB does the printing, there is better error handling if there | |
262 | is a problem with any of the arguments, but using an inferior | |
263 | function lets you have special-purpose printers and sending of | |
264 | output to the same place as compiled-in print functions. */ | |
265 | ||
266 | static const char dprintf_style_gdb[] = "gdb"; | |
267 | static const char dprintf_style_call[] = "call"; | |
268 | static const char dprintf_style_agent[] = "agent"; | |
269 | static const char *const dprintf_style_enums[] = { | |
270 | dprintf_style_gdb, | |
271 | dprintf_style_call, | |
272 | dprintf_style_agent, | |
273 | NULL | |
274 | }; | |
275 | static const char *dprintf_style = dprintf_style_gdb; | |
276 | ||
277 | /* The function to use for dynamic printf if the preferred style is to | |
278 | call into the inferior. The value is simply a string that is | |
279 | copied into the command, so it can be anything that GDB can | |
280 | evaluate to a callable address, not necessarily a function name. */ | |
281 | ||
bde6261a | 282 | static char *dprintf_function; |
d3ce09f5 SS |
283 | |
284 | /* The channel to use for dynamic printf if the preferred style is to | |
285 | call into the inferior; if a nonempty string, it will be passed to | |
286 | the call as the first argument, with the format string as the | |
287 | second. As with the dprintf function, this can be anything that | |
288 | GDB knows how to evaluate, so in addition to common choices like | |
289 | "stderr", this could be an app-specific expression like | |
290 | "mystreams[curlogger]". */ | |
291 | ||
bde6261a | 292 | static char *dprintf_channel; |
d3ce09f5 SS |
293 | |
294 | /* True if dprintf commands should continue to operate even if GDB | |
295 | has disconnected. */ | |
491144b5 | 296 | static bool disconnected_dprintf = true; |
d3ce09f5 | 297 | |
5cea2a26 PA |
298 | struct command_line * |
299 | breakpoint_commands (struct breakpoint *b) | |
300 | { | |
d1b0a7bf | 301 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 302 | } |
3daf8fe5 | 303 | |
f3b1572e PA |
304 | /* Flag indicating that a command has proceeded the inferior past the |
305 | current breakpoint. */ | |
306 | ||
491144b5 | 307 | static bool breakpoint_proceeded; |
f3b1572e | 308 | |
956a9fb9 | 309 | const char * |
2cec12e5 AR |
310 | bpdisp_text (enum bpdisp disp) |
311 | { | |
4a64f543 MS |
312 | /* NOTE: the following values are a part of MI protocol and |
313 | represent values of 'disp' field returned when inferior stops at | |
314 | a breakpoint. */ | |
bc043ef3 | 315 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 316 | |
2cec12e5 AR |
317 | return bpdisps[(int) disp]; |
318 | } | |
c906108c | 319 | |
4a64f543 | 320 | /* Prototypes for exported functions. */ |
c906108c | 321 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 322 | if such is available. */ |
c906108c SS |
323 | static int can_use_hw_watchpoints; |
324 | ||
920d2a44 AC |
325 | static void |
326 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
327 | struct cmd_list_element *c, | |
328 | const char *value) | |
329 | { | |
3e43a32a MS |
330 | fprintf_filtered (file, |
331 | _("Debugger's willingness to use " | |
332 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
333 | value); |
334 | } | |
335 | ||
fa8d40ab JJ |
336 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
337 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 338 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
339 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
340 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
341 | static void |
342 | show_pending_break_support (struct ui_file *file, int from_tty, | |
343 | struct cmd_list_element *c, | |
344 | const char *value) | |
345 | { | |
3e43a32a MS |
346 | fprintf_filtered (file, |
347 | _("Debugger's behavior regarding " | |
348 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
349 | value); |
350 | } | |
fa8d40ab | 351 | |
491144b5 | 352 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 353 | set with "break" but falling in read-only memory. |
491144b5 | 354 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 355 | use hardware breakpoints. */ |
491144b5 | 356 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
357 | static void |
358 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
359 | struct cmd_list_element *c, | |
360 | const char *value) | |
361 | { | |
3e43a32a MS |
362 | fprintf_filtered (file, |
363 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
364 | value); |
365 | } | |
366 | ||
a25a5a45 PA |
367 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
368 | stopped, and immediately inserts any new breakpoints as soon as | |
369 | they're created. If off (default), GDB keeps breakpoints off of | |
370 | the target as long as possible. That is, it delays inserting | |
371 | breakpoints until the next resume, and removes them again when the | |
372 | target fully stops. This is a bit safer in case GDB crashes while | |
373 | processing user input. */ | |
491144b5 | 374 | static bool always_inserted_mode = false; |
72d0e2c5 | 375 | |
33e5cbd6 | 376 | static void |
74960c60 | 377 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 378 | struct cmd_list_element *c, const char *value) |
74960c60 | 379 | { |
a25a5a45 PA |
380 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
381 | value); | |
74960c60 VP |
382 | } |
383 | ||
b57bacec PA |
384 | /* See breakpoint.h. */ |
385 | ||
33e5cbd6 | 386 | int |
a25a5a45 | 387 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 388 | { |
a25a5a45 PA |
389 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
390 | { | |
391 | /* If breakpoints are global, they should be inserted even if no | |
392 | thread under gdb's control is running, or even if there are | |
393 | no threads under GDB's control yet. */ | |
394 | return 1; | |
395 | } | |
5b6d1e4f | 396 | else |
a25a5a45 | 397 | { |
a25a5a45 PA |
398 | if (always_inserted_mode) |
399 | { | |
400 | /* The user wants breakpoints inserted even if all threads | |
401 | are stopped. */ | |
402 | return 1; | |
403 | } | |
404 | ||
5b6d1e4f PA |
405 | for (inferior *inf : all_inferiors ()) |
406 | if (inf->has_execution () | |
407 | && threads_are_executing (inf->process_target ())) | |
408 | return 1; | |
372316f1 PA |
409 | |
410 | /* Don't remove breakpoints yet if, even though all threads are | |
411 | stopped, we still have events to process. */ | |
08036331 | 412 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
413 | if (tp->resumed |
414 | && tp->suspend.waitstatus_pending_p) | |
415 | return 1; | |
a25a5a45 PA |
416 | } |
417 | return 0; | |
33e5cbd6 | 418 | } |
765dc015 | 419 | |
b775012e LM |
420 | static const char condition_evaluation_both[] = "host or target"; |
421 | ||
422 | /* Modes for breakpoint condition evaluation. */ | |
423 | static const char condition_evaluation_auto[] = "auto"; | |
424 | static const char condition_evaluation_host[] = "host"; | |
425 | static const char condition_evaluation_target[] = "target"; | |
426 | static const char *const condition_evaluation_enums[] = { | |
427 | condition_evaluation_auto, | |
428 | condition_evaluation_host, | |
429 | condition_evaluation_target, | |
430 | NULL | |
431 | }; | |
432 | ||
433 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
434 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
435 | ||
436 | /* Global that we use to display information to the user (gets its value from | |
437 | condition_evaluation_mode_1. */ | |
438 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
439 | ||
440 | /* Translate a condition evaluation mode MODE into either "host" | |
441 | or "target". This is used mostly to translate from "auto" to the | |
442 | real setting that is being used. It returns the translated | |
443 | evaluation mode. */ | |
444 | ||
445 | static const char * | |
446 | translate_condition_evaluation_mode (const char *mode) | |
447 | { | |
448 | if (mode == condition_evaluation_auto) | |
449 | { | |
450 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
451 | return condition_evaluation_target; | |
452 | else | |
453 | return condition_evaluation_host; | |
454 | } | |
455 | else | |
456 | return mode; | |
457 | } | |
458 | ||
459 | /* Discovers what condition_evaluation_auto translates to. */ | |
460 | ||
461 | static const char * | |
462 | breakpoint_condition_evaluation_mode (void) | |
463 | { | |
464 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
465 | } | |
466 | ||
467 | /* Return true if GDB should evaluate breakpoint conditions or false | |
468 | otherwise. */ | |
469 | ||
470 | static int | |
471 | gdb_evaluates_breakpoint_condition_p (void) | |
472 | { | |
473 | const char *mode = breakpoint_condition_evaluation_mode (); | |
474 | ||
475 | return (mode == condition_evaluation_host); | |
476 | } | |
477 | ||
c906108c SS |
478 | /* Are we executing breakpoint commands? */ |
479 | static int executing_breakpoint_commands; | |
480 | ||
c02f5703 MS |
481 | /* Are overlay event breakpoints enabled? */ |
482 | static int overlay_events_enabled; | |
483 | ||
e09342b5 | 484 | /* See description in breakpoint.h. */ |
491144b5 | 485 | bool target_exact_watchpoints = false; |
e09342b5 | 486 | |
c906108c | 487 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 488 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 489 | current breakpoint. */ |
c906108c | 490 | |
5c44784c | 491 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 492 | |
5c44784c JM |
493 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
494 | for (B = breakpoint_chain; \ | |
495 | B ? (TMP=B->next, 1): 0; \ | |
496 | B = TMP) | |
c906108c | 497 | |
4a64f543 MS |
498 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
499 | not provided so update_global_location_list must not be called | |
500 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 501 | |
876fa593 | 502 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
503 | for (BP_TMP = bp_locations; \ |
504 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 505 | BP_TMP++) |
7cc221ef | 506 | |
b775012e LM |
507 | /* Iterates through locations with address ADDRESS for the currently selected |
508 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
509 | to where the loop should start from. | |
510 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
511 | appropriate location to start with. */ | |
512 | ||
513 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
514 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
515 | BP_LOCP_TMP = BP_LOCP_START; \ | |
516 | BP_LOCP_START \ | |
f5336ca5 | 517 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
518 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
519 | BP_LOCP_TMP++) | |
520 | ||
1042e4c0 SS |
521 | /* Iterator for tracepoints only. */ |
522 | ||
523 | #define ALL_TRACEPOINTS(B) \ | |
524 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 525 | if (is_tracepoint (B)) |
1042e4c0 | 526 | |
7cc221ef | 527 | /* Chains of all breakpoints defined. */ |
c906108c | 528 | |
81e6b8eb | 529 | static struct breakpoint *breakpoint_chain; |
c906108c | 530 | |
39ef2f62 | 531 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 532 | |
f5336ca5 | 533 | static struct bp_location **bp_locations; |
876fa593 | 534 | |
f5336ca5 | 535 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 536 | |
f5336ca5 | 537 | static unsigned bp_locations_count; |
876fa593 | 538 | |
4a64f543 | 539 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 540 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 541 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 542 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 543 | an address you need to read. */ |
876fa593 | 544 | |
f5336ca5 | 545 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 546 | |
4a64f543 MS |
547 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
548 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
549 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
550 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 551 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 552 | |
f5336ca5 | 553 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 554 | |
4a64f543 | 555 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
556 | from the bp_locations array, but for which a hit may still be |
557 | reported by a target. */ | |
1123588c | 558 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 559 | |
c906108c SS |
560 | /* Number of last breakpoint made. */ |
561 | ||
95a42b64 TT |
562 | static int breakpoint_count; |
563 | ||
86b17b60 PA |
564 | /* The value of `breakpoint_count' before the last command that |
565 | created breakpoints. If the last (break-like) command created more | |
566 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
567 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
568 | static int prev_breakpoint_count; | |
c906108c | 569 | |
1042e4c0 SS |
570 | /* Number of last tracepoint made. */ |
571 | ||
95a42b64 | 572 | static int tracepoint_count; |
1042e4c0 | 573 | |
6149aea9 PA |
574 | static struct cmd_list_element *breakpoint_set_cmdlist; |
575 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 576 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 577 | |
badd37ce SDJ |
578 | /* See declaration at breakpoint.h. */ |
579 | ||
580 | struct breakpoint * | |
581 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
582 | void *user_data) | |
583 | { | |
584 | struct breakpoint *b = NULL; | |
585 | ||
586 | ALL_BREAKPOINTS (b) | |
587 | { | |
588 | if (func (b, user_data) != 0) | |
589 | break; | |
590 | } | |
591 | ||
592 | return b; | |
593 | } | |
594 | ||
468d015d JJ |
595 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
596 | static int | |
597 | breakpoint_enabled (struct breakpoint *b) | |
598 | { | |
0d381245 | 599 | return (b->enable_state == bp_enabled); |
468d015d JJ |
600 | } |
601 | ||
c906108c SS |
602 | /* Set breakpoint count to NUM. */ |
603 | ||
95a42b64 | 604 | static void |
fba45db2 | 605 | set_breakpoint_count (int num) |
c906108c | 606 | { |
86b17b60 | 607 | prev_breakpoint_count = breakpoint_count; |
c906108c | 608 | breakpoint_count = num; |
4fa62494 | 609 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
610 | } |
611 | ||
86b17b60 PA |
612 | /* Used by `start_rbreak_breakpoints' below, to record the current |
613 | breakpoint count before "rbreak" creates any breakpoint. */ | |
614 | static int rbreak_start_breakpoint_count; | |
615 | ||
95a42b64 TT |
616 | /* Called at the start an "rbreak" command to record the first |
617 | breakpoint made. */ | |
86b17b60 | 618 | |
c80049d3 | 619 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 620 | { |
86b17b60 | 621 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
622 | } |
623 | ||
624 | /* Called at the end of an "rbreak" command to record the last | |
625 | breakpoint made. */ | |
86b17b60 | 626 | |
c80049d3 | 627 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 628 | { |
86b17b60 | 629 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
630 | } |
631 | ||
4a64f543 | 632 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
633 | |
634 | void | |
fba45db2 | 635 | clear_breakpoint_hit_counts (void) |
c906108c SS |
636 | { |
637 | struct breakpoint *b; | |
638 | ||
639 | ALL_BREAKPOINTS (b) | |
640 | b->hit_count = 0; | |
641 | } | |
642 | ||
c906108c | 643 | \f |
48cb2d85 VP |
644 | /* Return the breakpoint with the specified number, or NULL |
645 | if the number does not refer to an existing breakpoint. */ | |
646 | ||
647 | struct breakpoint * | |
648 | get_breakpoint (int num) | |
649 | { | |
650 | struct breakpoint *b; | |
651 | ||
652 | ALL_BREAKPOINTS (b) | |
653 | if (b->number == num) | |
654 | return b; | |
655 | ||
656 | return NULL; | |
657 | } | |
5c44784c | 658 | |
c906108c | 659 | \f |
adc36818 | 660 | |
b775012e LM |
661 | /* Mark locations as "conditions have changed" in case the target supports |
662 | evaluating conditions on its side. */ | |
663 | ||
664 | static void | |
665 | mark_breakpoint_modified (struct breakpoint *b) | |
666 | { | |
667 | struct bp_location *loc; | |
668 | ||
669 | /* This is only meaningful if the target is | |
670 | evaluating conditions and if the user has | |
671 | opted for condition evaluation on the target's | |
672 | side. */ | |
673 | if (gdb_evaluates_breakpoint_condition_p () | |
674 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
675 | return; | |
676 | ||
677 | if (!is_breakpoint (b)) | |
678 | return; | |
679 | ||
680 | for (loc = b->loc; loc; loc = loc->next) | |
681 | loc->condition_changed = condition_modified; | |
682 | } | |
683 | ||
684 | /* Mark location as "conditions have changed" in case the target supports | |
685 | evaluating conditions on its side. */ | |
686 | ||
687 | static void | |
688 | mark_breakpoint_location_modified (struct bp_location *loc) | |
689 | { | |
690 | /* This is only meaningful if the target is | |
691 | evaluating conditions and if the user has | |
692 | opted for condition evaluation on the target's | |
693 | side. */ | |
694 | if (gdb_evaluates_breakpoint_condition_p () | |
695 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
696 | ||
697 | return; | |
698 | ||
699 | if (!is_breakpoint (loc->owner)) | |
700 | return; | |
701 | ||
702 | loc->condition_changed = condition_modified; | |
703 | } | |
704 | ||
705 | /* Sets the condition-evaluation mode using the static global | |
706 | condition_evaluation_mode. */ | |
707 | ||
708 | static void | |
eb4c3f4a | 709 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
710 | struct cmd_list_element *c) |
711 | { | |
b775012e LM |
712 | const char *old_mode, *new_mode; |
713 | ||
714 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
715 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
716 | { | |
717 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
718 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
719 | "Using host evaluation mode instead.")); | |
720 | return; | |
721 | } | |
722 | ||
723 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
724 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
725 | ||
abf1152a JK |
726 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
727 | settings was "auto". */ | |
728 | condition_evaluation_mode = condition_evaluation_mode_1; | |
729 | ||
b775012e LM |
730 | /* Only update the mode if the user picked a different one. */ |
731 | if (new_mode != old_mode) | |
732 | { | |
733 | struct bp_location *loc, **loc_tmp; | |
734 | /* If the user switched to a different evaluation mode, we | |
735 | need to synch the changes with the target as follows: | |
736 | ||
737 | "host" -> "target": Send all (valid) conditions to the target. | |
738 | "target" -> "host": Remove all the conditions from the target. | |
739 | */ | |
740 | ||
b775012e LM |
741 | if (new_mode == condition_evaluation_target) |
742 | { | |
743 | /* Mark everything modified and synch conditions with the | |
744 | target. */ | |
745 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
746 | mark_breakpoint_location_modified (loc); | |
747 | } | |
748 | else | |
749 | { | |
750 | /* Manually mark non-duplicate locations to synch conditions | |
751 | with the target. We do this to remove all the conditions the | |
752 | target knows about. */ | |
753 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
754 | if (is_breakpoint (loc->owner) && loc->inserted) | |
755 | loc->needs_update = 1; | |
756 | } | |
757 | ||
758 | /* Do the update. */ | |
44702360 | 759 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
760 | } |
761 | ||
762 | return; | |
763 | } | |
764 | ||
765 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
766 | what "auto" is translating to. */ | |
767 | ||
768 | static void | |
769 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
770 | struct cmd_list_element *c, const char *value) | |
771 | { | |
772 | if (condition_evaluation_mode == condition_evaluation_auto) | |
773 | fprintf_filtered (file, | |
774 | _("Breakpoint condition evaluation " | |
775 | "mode is %s (currently %s).\n"), | |
776 | value, | |
777 | breakpoint_condition_evaluation_mode ()); | |
778 | else | |
779 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
780 | value); | |
781 | } | |
782 | ||
783 | /* A comparison function for bp_location AP and BP that is used by | |
784 | bsearch. This comparison function only cares about addresses, unlike | |
39ef2f62 | 785 | the more general bp_location_is_less_than function. */ |
b775012e LM |
786 | |
787 | static int | |
f5336ca5 | 788 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 789 | { |
9a3c8263 SM |
790 | const struct bp_location *a = *(const struct bp_location **) ap; |
791 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
792 | |
793 | if (a->address == b->address) | |
794 | return 0; | |
795 | else | |
796 | return ((a->address > b->address) - (a->address < b->address)); | |
797 | } | |
798 | ||
799 | /* Helper function to skip all bp_locations with addresses | |
800 | less than ADDRESS. It returns the first bp_location that | |
801 | is greater than or equal to ADDRESS. If none is found, just | |
802 | return NULL. */ | |
803 | ||
804 | static struct bp_location ** | |
805 | get_first_locp_gte_addr (CORE_ADDR address) | |
806 | { | |
807 | struct bp_location dummy_loc; | |
808 | struct bp_location *dummy_locp = &dummy_loc; | |
809 | struct bp_location **locp_found = NULL; | |
810 | ||
811 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
812 | dummy_loc.address = address; |
813 | ||
814 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 815 | locp_found = ((struct bp_location **) |
f5336ca5 | 816 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 817 | sizeof (struct bp_location **), |
f5336ca5 | 818 | bp_locations_compare_addrs)); |
b775012e LM |
819 | |
820 | /* Nothing was found, nothing left to do. */ | |
821 | if (locp_found == NULL) | |
822 | return NULL; | |
823 | ||
824 | /* We may have found a location that is at ADDRESS but is not the first in the | |
825 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 826 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
827 | && (*(locp_found - 1))->address == address) |
828 | locp_found--; | |
829 | ||
830 | return locp_found; | |
831 | } | |
832 | ||
b5fa468f TBA |
833 | /* Parse COND_STRING in the context of LOC and set as the condition |
834 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
835 | the number of LOC within its owner. In case of parsing error, mark | |
836 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
837 | ||
838 | static void | |
839 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
840 | int bp_num, int loc_num) | |
841 | { | |
842 | bool has_junk = false; | |
843 | try | |
844 | { | |
845 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
846 | block_for_pc (loc->address), 0); | |
847 | if (*cond_string != 0) | |
848 | has_junk = true; | |
849 | else | |
850 | { | |
851 | loc->cond = std::move (new_exp); | |
852 | if (loc->disabled_by_cond && loc->enabled) | |
853 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
854 | "location %d, enabling.\n"), | |
855 | bp_num, loc_num); | |
856 | ||
857 | loc->disabled_by_cond = false; | |
858 | } | |
859 | } | |
860 | catch (const gdb_exception_error &e) | |
861 | { | |
862 | if (loc->enabled) | |
863 | { | |
864 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
865 | BP_NUM is 0 if the breakpoint is being defined for the first | |
866 | time using the "break ... if ..." command, and non-zero if | |
867 | already defined. */ | |
868 | if (bp_num != 0) | |
869 | warning (_("failed to validate condition at location %d.%d, " | |
870 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
871 | else | |
872 | warning (_("failed to validate condition at location %d, " | |
873 | "disabling:\n %s"), loc_num, e.what ()); | |
874 | } | |
875 | ||
876 | loc->disabled_by_cond = true; | |
877 | } | |
878 | ||
879 | if (has_junk) | |
880 | error (_("Garbage '%s' follows condition"), cond_string); | |
881 | } | |
882 | ||
adc36818 | 883 | void |
7a26bd4d | 884 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 885 | int from_tty, bool force) |
adc36818 | 886 | { |
4c55e970 | 887 | if (*exp == 0) |
3a5c3e22 | 888 | { |
4c55e970 TBA |
889 | xfree (b->cond_string); |
890 | b->cond_string = nullptr; | |
3a5c3e22 | 891 | |
4c55e970 | 892 | if (is_watchpoint (b)) |
78319c15 | 893 | static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
894 | else |
895 | { | |
b5fa468f | 896 | int loc_num = 1; |
78319c15 | 897 | for (bp_location *loc = b->loc; loc != nullptr; loc = loc->next) |
4c55e970 TBA |
898 | { |
899 | loc->cond.reset (); | |
b5fa468f TBA |
900 | if (loc->disabled_by_cond && loc->enabled) |
901 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
902 | "location %d, enabling.\n"), | |
903 | b->number, loc_num); | |
904 | loc->disabled_by_cond = false; | |
905 | loc_num++; | |
4c55e970 TBA |
906 | |
907 | /* No need to free the condition agent expression | |
908 | bytecode (if we have one). We will handle this | |
909 | when we go through update_global_location_list. */ | |
910 | } | |
911 | } | |
1e620590 | 912 | |
adc36818 PM |
913 | if (from_tty) |
914 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
915 | } | |
916 | else | |
917 | { | |
adc36818 PM |
918 | if (is_watchpoint (b)) |
919 | { | |
699bd4cf | 920 | innermost_block_tracker tracker; |
78319c15 | 921 | const char *arg = exp; |
4c55e970 | 922 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 923 | if (*arg != 0) |
adc36818 | 924 | error (_("Junk at end of expression")); |
78319c15 | 925 | watchpoint *w = static_cast<watchpoint *> (b); |
4c55e970 | 926 | w->cond_exp = std::move (new_exp); |
699bd4cf | 927 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
928 | } |
929 | else | |
930 | { | |
4c55e970 TBA |
931 | /* Parse and set condition expressions. We make two passes. |
932 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
933 | is valid in at least one location. If so, the condition |
934 | would be accepted. So we go ahead and set the locations' | |
935 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
936 | the error and the condition string will be rejected. |
937 | This two-pass approach is taken to avoid setting the | |
938 | state of locations in case of a reject. */ | |
78319c15 | 939 | for (bp_location *loc = b->loc; loc != nullptr; loc = loc->next) |
4c55e970 | 940 | { |
b5fa468f TBA |
941 | try |
942 | { | |
943 | const char *arg = exp; | |
944 | parse_exp_1 (&arg, loc->address, | |
945 | block_for_pc (loc->address), 0); | |
946 | if (*arg != 0) | |
947 | error (_("Junk at end of expression")); | |
948 | break; | |
949 | } | |
950 | catch (const gdb_exception_error &e) | |
951 | { | |
952 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
953 | be the last loc, abandon (if not forced) or continue |
954 | (if forced). */ | |
955 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
956 | throw; |
957 | } | |
4c55e970 TBA |
958 | } |
959 | ||
b5fa468f TBA |
960 | /* If we reach here, the condition is valid at some locations. */ |
961 | int loc_num = 1; | |
962 | for (bp_location *loc = b->loc; loc != nullptr; | |
963 | loc = loc->next, loc_num++) | |
964 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
adc36818 | 965 | } |
1e620590 TBA |
966 | |
967 | /* We know that the new condition parsed successfully. The | |
968 | condition string of the breakpoint can be safely updated. */ | |
969 | xfree (b->cond_string); | |
970 | b->cond_string = xstrdup (exp); | |
971 | b->condition_not_parsed = 0; | |
adc36818 | 972 | } |
b775012e LM |
973 | mark_breakpoint_modified (b); |
974 | ||
76727919 | 975 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
976 | } |
977 | ||
d55637df TT |
978 | /* Completion for the "condition" command. */ |
979 | ||
eb3ff9a5 | 980 | static void |
6f937416 | 981 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 982 | completion_tracker &tracker, |
6f937416 | 983 | const char *text, const char *word) |
d55637df | 984 | { |
6f937416 | 985 | const char *space; |
d55637df | 986 | |
f1735a53 TT |
987 | text = skip_spaces (text); |
988 | space = skip_to_space (text); | |
d55637df TT |
989 | if (*space == '\0') |
990 | { | |
991 | int len; | |
992 | struct breakpoint *b; | |
d55637df TT |
993 | |
994 | if (text[0] == '$') | |
995 | { | |
996 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
997 | if (!isdigit (text[1])) |
998 | complete_internalvar (tracker, &text[1]); | |
999 | return; | |
d55637df TT |
1000 | } |
1001 | ||
1002 | /* We're completing the breakpoint number. */ | |
1003 | len = strlen (text); | |
1004 | ||
1005 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
1006 | { |
1007 | char number[50]; | |
1008 | ||
1009 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1010 | ||
1011 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1012 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1013 | } |
d55637df | 1014 | |
eb3ff9a5 | 1015 | return; |
d55637df TT |
1016 | } |
1017 | ||
1018 | /* We're completing the expression part. */ | |
f1735a53 | 1019 | text = skip_spaces (space); |
eb3ff9a5 | 1020 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1021 | } |
1022 | ||
c906108c SS |
1023 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1024 | ||
1025 | static void | |
0b39b52e | 1026 | condition_command (const char *arg, int from_tty) |
c906108c | 1027 | { |
52f0bd74 | 1028 | struct breakpoint *b; |
0b39b52e | 1029 | const char *p; |
52f0bd74 | 1030 | int bnum; |
c906108c SS |
1031 | |
1032 | if (arg == 0) | |
e2e0b3e5 | 1033 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1034 | |
1035 | p = arg; | |
733d554a TBA |
1036 | |
1037 | /* Check if the "-force" flag was passed. */ | |
1038 | bool force = false; | |
1039 | const char *tok = skip_spaces (p); | |
1040 | const char *end_tok = skip_to_space (tok); | |
1041 | int toklen = end_tok - tok; | |
1042 | if (toklen >= 1 && strncmp (tok, "-force", toklen) == 0) | |
1043 | { | |
1044 | force = true; | |
1045 | p = end_tok + 1; | |
1046 | } | |
1047 | ||
c906108c | 1048 | bnum = get_number (&p); |
5c44784c | 1049 | if (bnum == 0) |
8a3fe4f8 | 1050 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1051 | |
1052 | ALL_BREAKPOINTS (b) | |
1053 | if (b->number == bnum) | |
2f069f6f | 1054 | { |
6dddc817 DE |
1055 | /* Check if this breakpoint has a "stop" method implemented in an |
1056 | extension language. This method and conditions entered into GDB | |
1057 | from the CLI are mutually exclusive. */ | |
1058 | const struct extension_language_defn *extlang | |
1059 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1060 | ||
1061 | if (extlang != NULL) | |
1062 | { | |
1063 | error (_("Only one stop condition allowed. There is currently" | |
1064 | " a %s stop condition defined for this breakpoint."), | |
1065 | ext_lang_capitalized_name (extlang)); | |
1066 | } | |
733d554a | 1067 | set_breakpoint_condition (b, p, from_tty, force); |
b775012e LM |
1068 | |
1069 | if (is_breakpoint (b)) | |
44702360 | 1070 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 1071 | |
2f069f6f JB |
1072 | return; |
1073 | } | |
c906108c | 1074 | |
8a3fe4f8 | 1075 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1076 | } |
1077 | ||
a7bdde9e VP |
1078 | /* Check that COMMAND do not contain commands that are suitable |
1079 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1080 | Throw if any such commands is found. */ |
1081 | ||
a7bdde9e VP |
1082 | static void |
1083 | check_no_tracepoint_commands (struct command_line *commands) | |
1084 | { | |
1085 | struct command_line *c; | |
cc59ec59 | 1086 | |
a7bdde9e VP |
1087 | for (c = commands; c; c = c->next) |
1088 | { | |
a7bdde9e | 1089 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1090 | error (_("The 'while-stepping' command can " |
1091 | "only be used for tracepoints")); | |
a7bdde9e | 1092 | |
12973681 TT |
1093 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1094 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1095 | |
1096 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1097 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1098 | command directly. */ |
1099 | if (strstr (c->line, "collect ") == c->line) | |
1100 | error (_("The 'collect' command can only be used for tracepoints")); | |
1101 | ||
51661e93 VP |
1102 | if (strstr (c->line, "teval ") == c->line) |
1103 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1104 | } |
1105 | } | |
1106 | ||
c1fc2657 | 1107 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1108 | { |
c1fc2657 | 1109 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1110 | }; |
1111 | ||
d77f58be SS |
1112 | /* Encapsulate tests for different types of tracepoints. */ |
1113 | ||
3b0871f4 SM |
1114 | static bool |
1115 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1116 | { |
1117 | return (type == bp_tracepoint | |
1118 | || type == bp_fast_tracepoint | |
1119 | || type == bp_static_tracepoint); | |
1120 | } | |
1121 | ||
3b0871f4 SM |
1122 | static bool |
1123 | is_longjmp_type (bptype type) | |
1124 | { | |
1125 | return type == bp_longjmp || type == bp_exception; | |
1126 | } | |
1127 | ||
f2478a7e SM |
1128 | /* See breakpoint.h. */ |
1129 | ||
1130 | bool | |
d77f58be | 1131 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1132 | { |
d9b3f62e | 1133 | return is_tracepoint_type (b->type); |
a7bdde9e | 1134 | } |
d9b3f62e | 1135 | |
a5e364af SM |
1136 | /* Factory function to create an appropriate instance of breakpoint given |
1137 | TYPE. */ | |
1138 | ||
1139 | static std::unique_ptr<breakpoint> | |
1140 | new_breakpoint_from_type (bptype type) | |
1141 | { | |
1142 | breakpoint *b; | |
1143 | ||
1144 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1145 | b = new tracepoint (); |
3b0871f4 | 1146 | else if (is_longjmp_type (type)) |
c1fc2657 | 1147 | b = new longjmp_breakpoint (); |
a5e364af SM |
1148 | else |
1149 | b = new breakpoint (); | |
1150 | ||
1151 | return std::unique_ptr<breakpoint> (b); | |
1152 | } | |
1153 | ||
e5dd4106 | 1154 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1155 | breakpoint. This function will throw an exception if a problem is |
1156 | found. */ | |
48cb2d85 | 1157 | |
95a42b64 TT |
1158 | static void |
1159 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1160 | struct command_line *commands) | |
48cb2d85 | 1161 | { |
d77f58be | 1162 | if (is_tracepoint (b)) |
a7bdde9e | 1163 | { |
c9a6ce02 | 1164 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1165 | struct command_line *c; |
1166 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1167 | |
1168 | /* Reset the while-stepping step count. The previous commands | |
1169 | might have included a while-stepping action, while the new | |
1170 | ones might not. */ | |
1171 | t->step_count = 0; | |
1172 | ||
1173 | /* We need to verify that each top-level element of commands is | |
1174 | valid for tracepoints, that there's at most one | |
1175 | while-stepping element, and that the while-stepping's body | |
1176 | has valid tracing commands excluding nested while-stepping. | |
1177 | We also need to validate the tracepoint action line in the | |
1178 | context of the tracepoint --- validate_actionline actually | |
1179 | has side effects, like setting the tracepoint's | |
1180 | while-stepping STEP_COUNT, in addition to checking if the | |
1181 | collect/teval actions parse and make sense in the | |
1182 | tracepoint's context. */ | |
a7bdde9e VP |
1183 | for (c = commands; c; c = c->next) |
1184 | { | |
a7bdde9e VP |
1185 | if (c->control_type == while_stepping_control) |
1186 | { | |
1187 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1188 | error (_("The 'while-stepping' command " |
1189 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1190 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1191 | error (_("The 'while-stepping' command " |
1192 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1193 | |
1194 | if (while_stepping) | |
3e43a32a MS |
1195 | error (_("The 'while-stepping' command " |
1196 | "can be used only once")); | |
a7bdde9e VP |
1197 | else |
1198 | while_stepping = c; | |
1199 | } | |
c9a6ce02 PA |
1200 | |
1201 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1202 | } |
1203 | if (while_stepping) | |
1204 | { | |
1205 | struct command_line *c2; | |
1206 | ||
12973681 TT |
1207 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1208 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1209 | for (; c2; c2 = c2->next) |
1210 | { | |
a7bdde9e VP |
1211 | if (c2->control_type == while_stepping_control) |
1212 | error (_("The 'while-stepping' command cannot be nested")); | |
1213 | } | |
1214 | } | |
1215 | } | |
1216 | else | |
1217 | { | |
1218 | check_no_tracepoint_commands (commands); | |
1219 | } | |
95a42b64 TT |
1220 | } |
1221 | ||
0fb4aa4b PA |
1222 | /* Return a vector of all the static tracepoints set at ADDR. The |
1223 | caller is responsible for releasing the vector. */ | |
1224 | ||
f51e0e20 | 1225 | std::vector<breakpoint *> |
0fb4aa4b PA |
1226 | static_tracepoints_here (CORE_ADDR addr) |
1227 | { | |
1228 | struct breakpoint *b; | |
f51e0e20 | 1229 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1230 | struct bp_location *loc; |
1231 | ||
1232 | ALL_BREAKPOINTS (b) | |
1233 | if (b->type == bp_static_tracepoint) | |
1234 | { | |
1235 | for (loc = b->loc; loc; loc = loc->next) | |
1236 | if (loc->address == addr) | |
f51e0e20 | 1237 | found.push_back (b); |
0fb4aa4b PA |
1238 | } |
1239 | ||
1240 | return found; | |
1241 | } | |
1242 | ||
95a42b64 | 1243 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1244 | validate that only allowed commands are included. */ |
95a42b64 TT |
1245 | |
1246 | void | |
4a64f543 | 1247 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1248 | counted_command_line &&commands) |
95a42b64 | 1249 | { |
93921405 | 1250 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1251 | |
d1b0a7bf | 1252 | b->commands = std::move (commands); |
76727919 | 1253 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1254 | } |
1255 | ||
45a43567 TT |
1256 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1257 | is not the same as the "silent" that may appear in the breakpoint's | |
1258 | commands. */ | |
1259 | ||
1260 | void | |
1261 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1262 | { | |
1263 | int old_silent = b->silent; | |
1264 | ||
1265 | b->silent = silent; | |
1266 | if (old_silent != silent) | |
76727919 | 1267 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1268 | } |
1269 | ||
1270 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1271 | breakpoint work for any thread. */ | |
1272 | ||
1273 | void | |
1274 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1275 | { | |
1276 | int old_thread = b->thread; | |
1277 | ||
1278 | b->thread = thread; | |
1279 | if (old_thread != thread) | |
76727919 | 1280 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1281 | } |
1282 | ||
1283 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1284 | breakpoint work for any task. */ | |
1285 | ||
1286 | void | |
1287 | breakpoint_set_task (struct breakpoint *b, int task) | |
1288 | { | |
1289 | int old_task = b->task; | |
1290 | ||
1291 | b->task = task; | |
1292 | if (old_task != task) | |
76727919 | 1293 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1294 | } |
1295 | ||
95a42b64 | 1296 | static void |
896b6bda | 1297 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1298 | struct command_line *control) |
95a42b64 | 1299 | { |
d1b0a7bf | 1300 | counted_command_line cmd; |
999700cd PW |
1301 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1302 | NULL after the call to read_command_lines if the user provides an empty | |
1303 | list of command by just typing "end". */ | |
1304 | bool cmd_read = false; | |
95a42b64 | 1305 | |
896b6bda PA |
1306 | std::string new_arg; |
1307 | ||
95a42b64 TT |
1308 | if (arg == NULL || !*arg) |
1309 | { | |
da1df1db | 1310 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1311 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1312 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1313 | breakpoint_count); | |
95a42b64 | 1314 | else if (breakpoint_count > 0) |
896b6bda | 1315 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1316 | } |
da1df1db TBA |
1317 | else |
1318 | { | |
1319 | /* Create a copy of ARG. This is needed because the "commands" | |
1320 | command may be coming from a script. In that case, the read | |
1321 | line buffer is going to be overwritten in the lambda of | |
1322 | 'map_breakpoint_numbers' below when reading the next line | |
1323 | before we are are done parsing the breakpoint numbers. */ | |
1324 | new_arg = arg; | |
1325 | } | |
1326 | arg = new_arg.c_str (); | |
48649e1b TT |
1327 | |
1328 | map_breakpoint_numbers | |
1329 | (arg, [&] (breakpoint *b) | |
1330 | { | |
999700cd | 1331 | if (!cmd_read) |
48649e1b | 1332 | { |
999700cd | 1333 | gdb_assert (cmd == NULL); |
48649e1b | 1334 | if (control != NULL) |
12973681 | 1335 | cmd = control->body_list_0; |
48649e1b TT |
1336 | else |
1337 | { | |
81b1e71c TT |
1338 | std::string str |
1339 | = string_printf (_("Type commands for breakpoint(s) " | |
1340 | "%s, one per line."), | |
1341 | arg); | |
48649e1b | 1342 | |
60b3cef2 TT |
1343 | auto do_validate = [=] (const char *line) |
1344 | { | |
1345 | validate_actionline (line, b); | |
1346 | }; | |
1347 | gdb::function_view<void (const char *)> validator; | |
1348 | if (is_tracepoint (b)) | |
1349 | validator = do_validate; | |
1350 | ||
1351 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1352 | } |
999700cd | 1353 | cmd_read = true; |
48649e1b TT |
1354 | } |
1355 | ||
1356 | /* If a breakpoint was on the list more than once, we don't need to | |
1357 | do anything. */ | |
1358 | if (b->commands != cmd) | |
1359 | { | |
d1b0a7bf | 1360 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1361 | b->commands = cmd; |
76727919 | 1362 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1363 | } |
1364 | }); | |
95a42b64 TT |
1365 | } |
1366 | ||
1367 | static void | |
0b39b52e | 1368 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1369 | { |
1370 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1371 | } |
40c03ae8 EZ |
1372 | |
1373 | /* Like commands_command, but instead of reading the commands from | |
1374 | input stream, takes them from an already parsed command structure. | |
1375 | ||
1376 | This is used by cli-script.c to DTRT with breakpoint commands | |
1377 | that are part of if and while bodies. */ | |
1378 | enum command_control_type | |
896b6bda | 1379 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1380 | { |
95a42b64 TT |
1381 | commands_command_1 (arg, 0, cmd); |
1382 | return simple_control; | |
40c03ae8 | 1383 | } |
876fa593 JK |
1384 | |
1385 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1386 | ||
1387 | static int | |
1388 | bp_location_has_shadow (struct bp_location *bl) | |
1389 | { | |
1390 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1391 | return 0; | |
1392 | if (!bl->inserted) | |
1393 | return 0; | |
1394 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1395 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1396 | return 0; |
1397 | return 1; | |
1398 | } | |
1399 | ||
9d497a19 PA |
1400 | /* Update BUF, which is LEN bytes read from the target address |
1401 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1402 | contents. | |
1403 | ||
1404 | If READBUF is not NULL, this buffer must not overlap with the of | |
1405 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1406 | failed assertion internal error will be raised. */ | |
1407 | ||
1408 | static void | |
1409 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1410 | const gdb_byte *writebuf_org, | |
1411 | ULONGEST memaddr, LONGEST len, | |
1412 | struct bp_target_info *target_info, | |
1413 | struct gdbarch *gdbarch) | |
1414 | { | |
1415 | /* Now do full processing of the found relevant range of elements. */ | |
1416 | CORE_ADDR bp_addr = 0; | |
1417 | int bp_size = 0; | |
1418 | int bptoffset = 0; | |
1419 | ||
1420 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1421 | current_program_space->aspace, 0)) | |
1422 | { | |
1423 | /* The breakpoint is inserted in a different address space. */ | |
1424 | return; | |
1425 | } | |
1426 | ||
1427 | /* Addresses and length of the part of the breakpoint that | |
1428 | we need to copy. */ | |
1429 | bp_addr = target_info->placed_address; | |
1430 | bp_size = target_info->shadow_len; | |
1431 | ||
1432 | if (bp_addr + bp_size <= memaddr) | |
1433 | { | |
1434 | /* The breakpoint is entirely before the chunk of memory we are | |
1435 | reading. */ | |
1436 | return; | |
1437 | } | |
1438 | ||
1439 | if (bp_addr >= memaddr + len) | |
1440 | { | |
1441 | /* The breakpoint is entirely after the chunk of memory we are | |
1442 | reading. */ | |
1443 | return; | |
1444 | } | |
1445 | ||
1446 | /* Offset within shadow_contents. */ | |
1447 | if (bp_addr < memaddr) | |
1448 | { | |
1449 | /* Only copy the second part of the breakpoint. */ | |
1450 | bp_size -= memaddr - bp_addr; | |
1451 | bptoffset = memaddr - bp_addr; | |
1452 | bp_addr = memaddr; | |
1453 | } | |
1454 | ||
1455 | if (bp_addr + bp_size > memaddr + len) | |
1456 | { | |
1457 | /* Only copy the first part of the breakpoint. */ | |
1458 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1459 | } | |
1460 | ||
1461 | if (readbuf != NULL) | |
1462 | { | |
1463 | /* Verify that the readbuf buffer does not overlap with the | |
1464 | shadow_contents buffer. */ | |
1465 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1466 | || readbuf >= (target_info->shadow_contents | |
1467 | + target_info->shadow_len)); | |
1468 | ||
1469 | /* Update the read buffer with this inserted breakpoint's | |
1470 | shadow. */ | |
1471 | memcpy (readbuf + bp_addr - memaddr, | |
1472 | target_info->shadow_contents + bptoffset, bp_size); | |
1473 | } | |
1474 | else | |
1475 | { | |
1476 | const unsigned char *bp; | |
0d5ed153 MR |
1477 | CORE_ADDR addr = target_info->reqstd_address; |
1478 | int placed_size; | |
9d497a19 PA |
1479 | |
1480 | /* Update the shadow with what we want to write to memory. */ | |
1481 | memcpy (target_info->shadow_contents + bptoffset, | |
1482 | writebuf_org + bp_addr - memaddr, bp_size); | |
1483 | ||
1484 | /* Determine appropriate breakpoint contents and size for this | |
1485 | address. */ | |
0d5ed153 | 1486 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1487 | |
1488 | /* Update the final write buffer with this inserted | |
1489 | breakpoint's INSN. */ | |
1490 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1491 | } | |
1492 | } | |
1493 | ||
8defab1a | 1494 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1495 | by replacing any memory breakpoints with their shadowed contents. |
1496 | ||
35c63cd8 JB |
1497 | If READBUF is not NULL, this buffer must not overlap with any of |
1498 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1499 | a failed assertion internal error will be raised. | |
1500 | ||
876fa593 | 1501 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1502 | bl->address - bp_locations_placed_address_before_address_max |
1503 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1504 | The range we were requested to resolve shadows for is: |
1505 | memaddr ... memaddr + len | |
1506 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1507 | memaddr + len <= (bl->address |
f5336ca5 | 1508 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1509 | and: |
f5336ca5 | 1510 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1511 | |
8defab1a | 1512 | void |
f0ba3972 PA |
1513 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1514 | const gdb_byte *writebuf_org, | |
1515 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1516 | { |
4a64f543 MS |
1517 | /* Left boundary, right boundary and median element of our binary |
1518 | search. */ | |
876fa593 JK |
1519 | unsigned bc_l, bc_r, bc; |
1520 | ||
4a64f543 MS |
1521 | /* Find BC_L which is a leftmost element which may affect BUF |
1522 | content. It is safe to report lower value but a failure to | |
1523 | report higher one. */ | |
876fa593 JK |
1524 | |
1525 | bc_l = 0; | |
f5336ca5 | 1526 | bc_r = bp_locations_count; |
876fa593 JK |
1527 | while (bc_l + 1 < bc_r) |
1528 | { | |
35df4500 | 1529 | struct bp_location *bl; |
876fa593 JK |
1530 | |
1531 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1532 | bl = bp_locations[bc]; |
876fa593 | 1533 | |
4a64f543 MS |
1534 | /* Check first BL->ADDRESS will not overflow due to the added |
1535 | constant. Then advance the left boundary only if we are sure | |
1536 | the BC element can in no way affect the BUF content (MEMADDR | |
1537 | to MEMADDR + LEN range). | |
876fa593 | 1538 | |
f5336ca5 | 1539 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1540 | offset so that we cannot miss a breakpoint with its shadow |
1541 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1542 | |
f5336ca5 | 1543 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1544 | >= bl->address) |
f5336ca5 | 1545 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1546 | <= memaddr)) |
876fa593 JK |
1547 | bc_l = bc; |
1548 | else | |
1549 | bc_r = bc; | |
1550 | } | |
1551 | ||
128070bb PA |
1552 | /* Due to the binary search above, we need to make sure we pick the |
1553 | first location that's at BC_L's address. E.g., if there are | |
1554 | multiple locations at the same address, BC_L may end up pointing | |
1555 | at a duplicate location, and miss the "master"/"inserted" | |
1556 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1557 | B: | |
1558 | ||
1559 | L1@A, L2@A, L3@B, ... | |
1560 | ||
1561 | BC_L could end up pointing at location L2, while the "master" | |
1562 | location could be L1. Since the `loc->inserted' flag is only set | |
1563 | on "master" locations, we'd forget to restore the shadow of L1 | |
1564 | and L2. */ | |
1565 | while (bc_l > 0 | |
f5336ca5 | 1566 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1567 | bc_l--; |
1568 | ||
876fa593 JK |
1569 | /* Now do full processing of the found relevant range of elements. */ |
1570 | ||
f5336ca5 | 1571 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1572 | { |
f5336ca5 | 1573 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1574 | |
35df4500 TJB |
1575 | /* bp_location array has BL->OWNER always non-NULL. */ |
1576 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1577 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1578 | bl->owner->number); |
ffce0d52 | 1579 | |
e5dd4106 | 1580 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1581 | content. */ |
1582 | ||
f5336ca5 PA |
1583 | if (bl->address >= bp_locations_placed_address_before_address_max |
1584 | && memaddr + len <= (bl->address | |
1585 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1586 | break; |
1587 | ||
35df4500 | 1588 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1589 | continue; |
6c95b8df | 1590 | |
9d497a19 PA |
1591 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1592 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1593 | } | |
c906108c | 1594 | } |
9d497a19 | 1595 | |
f2478a7e | 1596 | /* See breakpoint.h. */ |
b775012e | 1597 | |
f2478a7e | 1598 | bool |
b775012e LM |
1599 | is_breakpoint (const struct breakpoint *bpt) |
1600 | { | |
1601 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1602 | || bpt->type == bp_hardware_breakpoint |
1603 | || bpt->type == bp_dprintf); | |
b775012e LM |
1604 | } |
1605 | ||
60e1c644 PA |
1606 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1607 | ||
f2478a7e | 1608 | static bool |
d77f58be | 1609 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1610 | { |
1611 | return (bpt->type == bp_hardware_watchpoint | |
1612 | || bpt->type == bp_read_watchpoint | |
1613 | || bpt->type == bp_access_watchpoint); | |
1614 | } | |
7270d8f2 | 1615 | |
f2478a7e | 1616 | /* See breakpoint.h. */ |
60e1c644 | 1617 | |
f2478a7e | 1618 | bool |
d77f58be | 1619 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1620 | { |
1621 | return (is_hardware_watchpoint (bpt) | |
1622 | || bpt->type == bp_watchpoint); | |
1623 | } | |
1624 | ||
3a5c3e22 PA |
1625 | /* Returns true if the current thread and its running state are safe |
1626 | to evaluate or update watchpoint B. Watchpoints on local | |
1627 | expressions need to be evaluated in the context of the thread that | |
1628 | was current when the watchpoint was created, and, that thread needs | |
1629 | to be stopped to be able to select the correct frame context. | |
1630 | Watchpoints on global expressions can be evaluated on any thread, | |
1631 | and in any state. It is presently left to the target allowing | |
1632 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1633 | |
1634 | static int | |
3a5c3e22 | 1635 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1636 | { |
c1fc2657 | 1637 | return (b->pspace == current_program_space |
d7e15655 TT |
1638 | && (b->watchpoint_thread == null_ptid |
1639 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1640 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1641 | } |
1642 | ||
d0fb5eae JK |
1643 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1644 | associated bp_watchpoint_scope breakpoint. */ | |
1645 | ||
1646 | static void | |
3a5c3e22 | 1647 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1648 | { |
c1fc2657 | 1649 | if (w->related_breakpoint != w) |
d0fb5eae | 1650 | { |
c1fc2657 SM |
1651 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1652 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1653 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1654 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1655 | w->related_breakpoint = w; | |
d0fb5eae | 1656 | } |
c1fc2657 | 1657 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1658 | } |
1659 | ||
bb9d5f81 PP |
1660 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1661 | watchpoint W. */ | |
1662 | ||
1663 | static struct value * | |
1664 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1665 | { | |
1666 | struct value *bit_val; | |
1667 | ||
1668 | if (val == NULL) | |
1669 | return NULL; | |
1670 | ||
1671 | bit_val = allocate_value (value_type (val)); | |
1672 | ||
1673 | unpack_value_bitfield (bit_val, | |
1674 | w->val_bitpos, | |
1675 | w->val_bitsize, | |
1676 | value_contents_for_printing (val), | |
1677 | value_offset (val), | |
1678 | val); | |
1679 | ||
1680 | return bit_val; | |
1681 | } | |
1682 | ||
c6d81124 PA |
1683 | /* Allocate a dummy location and add it to B, which must be a software |
1684 | watchpoint. This is required because even if a software watchpoint | |
1685 | is not watching any memory, bpstat_stop_status requires a location | |
1686 | to be able to report stops. */ | |
1687 | ||
1688 | static void | |
1689 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1690 | struct program_space *pspace) | |
1691 | { | |
1692 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1693 | ||
1694 | b->loc = allocate_bp_location (b); | |
1695 | b->loc->pspace = pspace; | |
1696 | b->loc->address = -1; | |
1697 | b->loc->length = -1; | |
1698 | } | |
1699 | ||
1700 | /* Returns true if B is a software watchpoint that is not watching any | |
1701 | memory (e.g., "watch $pc"). */ | |
1702 | ||
f2478a7e | 1703 | static bool |
c6d81124 PA |
1704 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1705 | { | |
1706 | return (b->type == bp_watchpoint | |
1707 | && b->loc != NULL | |
1708 | && b->loc->next == NULL | |
1709 | && b->loc->address == -1 | |
1710 | && b->loc->length == -1); | |
1711 | } | |
1712 | ||
567e1b4e JB |
1713 | /* Assuming that B is a watchpoint: |
1714 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1715 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1716 | - Evaluate the condition if there is one, and store the result |
1717 | in b->loc->cond. | |
a5606eee VP |
1718 | - Update the list of values that must be watched in B->loc. |
1719 | ||
4a64f543 MS |
1720 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1721 | nothing. If this is local watchpoint that is out of scope, delete | |
1722 | it. | |
1723 | ||
1724 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1725 | removed + inserted on each stop here. Normal breakpoints must | |
1726 | never be removed because they might be missed by a running thread | |
1727 | when debugging in non-stop mode. On the other hand, hardware | |
1728 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1729 | to each LWP since they are stored in each LWP's hardware debug | |
1730 | registers. Therefore, such LWP must be stopped first in order to | |
1731 | be able to modify its hardware watchpoints. | |
1732 | ||
1733 | Hardware watchpoints must be reset exactly once after being | |
1734 | presented to the user. It cannot be done sooner, because it would | |
1735 | reset the data used to present the watchpoint hit to the user. And | |
1736 | it must not be done later because it could display the same single | |
1737 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1738 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1739 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1740 | not user-visible - its hit is suppressed if the memory content has | |
1741 | not changed. | |
1742 | ||
1743 | The following constraints influence the location where we can reset | |
1744 | hardware watchpoints: | |
1745 | ||
1746 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1747 | called several times when GDB stops. | |
1748 | ||
1749 | [linux] | |
1750 | * Multiple hardware watchpoints can be hit at the same time, | |
1751 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1752 | hit at a time as the reason for stopping, and all the other hits | |
1753 | are presented later, one after the other, each time the user | |
1754 | requests the execution to be resumed. Execution is not resumed | |
1755 | for the threads still having pending hit event stored in | |
1756 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1757 | the inferior on the first stop the thread hit event is kept being | |
1758 | reported from its cached value by linux_nat_stopped_data_address | |
1759 | until the real thread resume happens after the watchpoint gets | |
1760 | presented and thus its LWP_INFO->STATUS gets reset. | |
1761 | ||
1762 | Therefore the hardware watchpoint hit can get safely reset on the | |
1763 | watchpoint removal from inferior. */ | |
a79d3c27 | 1764 | |
b40ce68a | 1765 | static void |
3a5c3e22 | 1766 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1767 | { |
a5606eee | 1768 | int within_current_scope; |
a5606eee | 1769 | struct frame_id saved_frame_id; |
66076460 | 1770 | int frame_saved; |
a5606eee | 1771 | |
f6bc2008 PA |
1772 | /* If this is a local watchpoint, we only want to check if the |
1773 | watchpoint frame is in scope if the current thread is the thread | |
1774 | that was used to create the watchpoint. */ | |
1775 | if (!watchpoint_in_thread_scope (b)) | |
1776 | return; | |
1777 | ||
c1fc2657 | 1778 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1779 | return; |
1780 | ||
66076460 | 1781 | frame_saved = 0; |
a5606eee VP |
1782 | |
1783 | /* Determine if the watchpoint is within scope. */ | |
1784 | if (b->exp_valid_block == NULL) | |
1785 | within_current_scope = 1; | |
1786 | else | |
1787 | { | |
b5db5dfc UW |
1788 | struct frame_info *fi = get_current_frame (); |
1789 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1790 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1791 | ||
c9cf6e20 MG |
1792 | /* If we're at a point where the stack has been destroyed |
1793 | (e.g. in a function epilogue), unwinding may not work | |
1794 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1795 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1796 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1797 | return; |
66076460 DJ |
1798 | |
1799 | /* Save the current frame's ID so we can restore it after | |
1800 | evaluating the watchpoint expression on its own frame. */ | |
1801 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1802 | took a frame parameter, so that we didn't have to change the | |
1803 | selected frame. */ | |
1804 | frame_saved = 1; | |
1805 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1806 | ||
a5606eee VP |
1807 | fi = frame_find_by_id (b->watchpoint_frame); |
1808 | within_current_scope = (fi != NULL); | |
1809 | if (within_current_scope) | |
1810 | select_frame (fi); | |
1811 | } | |
1812 | ||
b5db5dfc UW |
1813 | /* We don't free locations. They are stored in the bp_location array |
1814 | and update_global_location_list will eventually delete them and | |
1815 | remove breakpoints if needed. */ | |
c1fc2657 | 1816 | b->loc = NULL; |
b5db5dfc | 1817 | |
a5606eee VP |
1818 | if (within_current_scope && reparse) |
1819 | { | |
bbc13ae3 | 1820 | const char *s; |
d63d0675 | 1821 | |
4d01a485 | 1822 | b->exp.reset (); |
d63d0675 | 1823 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1824 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1825 | /* If the meaning of expression itself changed, the old value is |
1826 | no longer relevant. We don't want to report a watchpoint hit | |
1827 | to the user when the old value and the new value may actually | |
1828 | be completely different objects. */ | |
fa4727a6 | 1829 | b->val = NULL; |
4c1d86d9 | 1830 | b->val_valid = false; |
60e1c644 PA |
1831 | |
1832 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1833 | expression is stored in the breakpoint object, not in the | |
1834 | locations (re)created below. */ | |
c1fc2657 | 1835 | if (b->cond_string != NULL) |
60e1c644 | 1836 | { |
4d01a485 | 1837 | b->cond_exp.reset (); |
60e1c644 | 1838 | |
c1fc2657 | 1839 | s = b->cond_string; |
1bb9788d | 1840 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1841 | } |
a5606eee | 1842 | } |
a5606eee VP |
1843 | |
1844 | /* If we failed to parse the expression, for example because | |
1845 | it refers to a global variable in a not-yet-loaded shared library, | |
1846 | don't try to insert watchpoint. We don't automatically delete | |
1847 | such watchpoint, though, since failure to parse expression | |
1848 | is different from out-of-scope watchpoint. */ | |
55f6301a | 1849 | if (!target_has_execution ()) |
2d134ed3 PA |
1850 | { |
1851 | /* Without execution, memory can't change. No use to try and | |
1852 | set watchpoint locations. The watchpoint will be reset when | |
1853 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1854 | if (!can_use_hw_watchpoints) |
1855 | { | |
c1fc2657 SM |
1856 | if (b->ops->works_in_software_mode (b)) |
1857 | b->type = bp_watchpoint; | |
e8369a73 | 1858 | else |
638aa5a1 AB |
1859 | error (_("Can't set read/access watchpoint when " |
1860 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1861 | } |
2d134ed3 PA |
1862 | } |
1863 | else if (within_current_scope && b->exp) | |
a5606eee | 1864 | { |
0cf6dd15 | 1865 | int pc = 0; |
a6535de1 | 1866 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1867 | struct value *v, *result; |
2d134ed3 | 1868 | struct program_space *frame_pspace; |
a5606eee | 1869 | |
4d01a485 | 1870 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1871 | |
a5606eee VP |
1872 | /* Avoid setting b->val if it's already set. The meaning of |
1873 | b->val is 'the last value' user saw, and we should update | |
1874 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1875 | happens, the code that reports it updates b->val directly. |
1876 | We don't keep track of the memory value for masked | |
1877 | watchpoints. */ | |
c1fc2657 | 1878 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1879 | { |
bb9d5f81 | 1880 | if (b->val_bitsize != 0) |
850645cf TT |
1881 | v = extract_bitfield_from_watchpoint_value (b, v); |
1882 | b->val = release_value (v); | |
4c1d86d9 | 1883 | b->val_valid = true; |
fa4727a6 | 1884 | } |
a5606eee | 1885 | |
2d134ed3 PA |
1886 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1887 | ||
a5606eee | 1888 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1889 | gdb_assert (!val_chain.empty ()); |
1890 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1891 | { |
a6535de1 TT |
1892 | v = iter.get (); |
1893 | ||
a5606eee VP |
1894 | /* If it's a memory location, and GDB actually needed |
1895 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1896 | must watch it. If the first value returned is |
1897 | still lazy, that means an error occurred reading it; | |
1898 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1899 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1900 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1901 | { |
1902 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1903 | |
a5606eee VP |
1904 | /* We only watch structs and arrays if user asked |
1905 | for it explicitly, never if they just happen to | |
1906 | appear in the middle of some value chain. */ | |
fa4727a6 | 1907 | if (v == result |
78134374 SM |
1908 | || (vtype->code () != TYPE_CODE_STRUCT |
1909 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
1910 | { |
1911 | CORE_ADDR addr; | |
f486487f | 1912 | enum target_hw_bp_type type; |
a5606eee | 1913 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1914 | int bitpos = 0, bitsize = 0; |
1915 | ||
1916 | if (value_bitsize (v) != 0) | |
1917 | { | |
1918 | /* Extract the bit parameters out from the bitfield | |
1919 | sub-expression. */ | |
1920 | bitpos = value_bitpos (v); | |
1921 | bitsize = value_bitsize (v); | |
1922 | } | |
1923 | else if (v == result && b->val_bitsize != 0) | |
1924 | { | |
1925 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1926 | lvalue whose bit parameters are saved in the fields | |
1927 | VAL_BITPOS and VAL_BITSIZE. */ | |
1928 | bitpos = b->val_bitpos; | |
1929 | bitsize = b->val_bitsize; | |
1930 | } | |
a5606eee | 1931 | |
42ae5230 | 1932 | addr = value_address (v); |
bb9d5f81 PP |
1933 | if (bitsize != 0) |
1934 | { | |
1935 | /* Skip the bytes that don't contain the bitfield. */ | |
1936 | addr += bitpos / 8; | |
1937 | } | |
1938 | ||
a5606eee | 1939 | type = hw_write; |
c1fc2657 | 1940 | if (b->type == bp_read_watchpoint) |
a5606eee | 1941 | type = hw_read; |
c1fc2657 | 1942 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1943 | type = hw_access; |
3a5c3e22 | 1944 | |
c1fc2657 SM |
1945 | loc = allocate_bp_location (b); |
1946 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1947 | ; |
1948 | *tmp = loc; | |
a6d9a66e | 1949 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1950 | |
1951 | loc->pspace = frame_pspace; | |
f17d9474 | 1952 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1953 | |
1954 | if (bitsize != 0) | |
1955 | { | |
1956 | /* Just cover the bytes that make up the bitfield. */ | |
1957 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1958 | } | |
1959 | else | |
1960 | loc->length = TYPE_LENGTH (value_type (v)); | |
1961 | ||
a5606eee VP |
1962 | loc->watchpoint_type = type; |
1963 | } | |
1964 | } | |
9fa40276 TJB |
1965 | } |
1966 | ||
1967 | /* Change the type of breakpoint between hardware assisted or | |
1968 | an ordinary watchpoint depending on the hardware support | |
1969 | and free hardware slots. REPARSE is set when the inferior | |
1970 | is started. */ | |
a9634178 | 1971 | if (reparse) |
9fa40276 | 1972 | { |
e09342b5 | 1973 | int reg_cnt; |
9fa40276 TJB |
1974 | enum bp_loc_type loc_type; |
1975 | struct bp_location *bl; | |
a5606eee | 1976 | |
a9634178 | 1977 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1978 | |
1979 | if (reg_cnt) | |
9fa40276 TJB |
1980 | { |
1981 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1982 | enum bptype type; |
9fa40276 | 1983 | |
a9634178 TJB |
1984 | /* Use an exact watchpoint when there's only one memory region to be |
1985 | watched, and only one debug register is needed to watch it. */ | |
1986 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1987 | ||
9fa40276 | 1988 | /* We need to determine how many resources are already |
e09342b5 TJB |
1989 | used for all other hardware watchpoints plus this one |
1990 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1991 | this watchpoint in as well. */ |
1992 | ||
1993 | /* If this is a software watchpoint, we try to turn it | |
1994 | to a hardware one -- count resources as if B was of | |
1995 | hardware watchpoint type. */ | |
c1fc2657 | 1996 | type = b->type; |
a1398e0c PA |
1997 | if (type == bp_watchpoint) |
1998 | type = bp_hardware_watchpoint; | |
1999 | ||
2000 | /* This watchpoint may or may not have been placed on | |
2001 | the list yet at this point (it won't be in the list | |
2002 | if we're trying to create it for the first time, | |
2003 | through watch_command), so always account for it | |
2004 | manually. */ | |
2005 | ||
2006 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2007 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2008 | |
2009 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2010 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2011 | |
2012 | target_resources_ok | |
2013 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2014 | if (target_resources_ok <= 0) |
a9634178 | 2015 | { |
c1fc2657 | 2016 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
2017 | |
2018 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2019 | error (_("Target does not support this type of " |
2020 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2021 | else if (target_resources_ok < 0 && !sw_mode) |
2022 | error (_("There are not enough available hardware " | |
2023 | "resources for this watchpoint.")); | |
a1398e0c PA |
2024 | |
2025 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2026 | b->type = bp_watchpoint; |
a1398e0c PA |
2027 | } |
2028 | else | |
2029 | { | |
2030 | /* If this was a software watchpoint, we've just | |
2031 | found we have enough resources to turn it to a | |
2032 | hardware watchpoint. Otherwise, this is a | |
2033 | nop. */ | |
c1fc2657 | 2034 | b->type = type; |
a9634178 | 2035 | } |
9fa40276 | 2036 | } |
c1fc2657 | 2037 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
2038 | { |
2039 | if (!can_use_hw_watchpoints) | |
2040 | error (_("Can't set read/access watchpoint when " | |
2041 | "hardware watchpoints are disabled.")); | |
2042 | else | |
2043 | error (_("Expression cannot be implemented with " | |
2044 | "read/access watchpoint.")); | |
2045 | } | |
9fa40276 | 2046 | else |
c1fc2657 | 2047 | b->type = bp_watchpoint; |
9fa40276 | 2048 | |
c1fc2657 | 2049 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 2050 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 2051 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
2052 | bl->loc_type = loc_type; |
2053 | } | |
2054 | ||
c7437ca6 PA |
2055 | /* If a software watchpoint is not watching any memory, then the |
2056 | above left it without any location set up. But, | |
2057 | bpstat_stop_status requires a location to be able to report | |
2058 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2059 | if (b->type == bp_watchpoint && b->loc == NULL) |
2060 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2061 | } |
2062 | else if (!within_current_scope) | |
7270d8f2 | 2063 | { |
ac74f770 MS |
2064 | printf_filtered (_("\ |
2065 | Watchpoint %d deleted because the program has left the block\n\ | |
2066 | in which its expression is valid.\n"), | |
c1fc2657 | 2067 | b->number); |
d0fb5eae | 2068 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2069 | } |
a5606eee VP |
2070 | |
2071 | /* Restore the selected frame. */ | |
66076460 DJ |
2072 | if (frame_saved) |
2073 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2074 | } |
2075 | ||
a5606eee | 2076 | |
74960c60 | 2077 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2078 | inserted in the inferior. We don't differentiate the type of BL's owner |
2079 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2080 | breakpoint_ops is not defined, because in insert_bp_location, | |
2081 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2082 | static int |
35df4500 | 2083 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2084 | { |
35df4500 | 2085 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2086 | return 0; |
2087 | ||
35df4500 | 2088 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2089 | return 0; |
2090 | ||
b5fa468f TBA |
2091 | if (!bl->enabled || bl->disabled_by_cond |
2092 | || bl->shlib_disabled || bl->duplicate) | |
74960c60 VP |
2093 | return 0; |
2094 | ||
f8eba3c6 TT |
2095 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2096 | return 0; | |
2097 | ||
56710373 PA |
2098 | /* This is set for example, when we're attached to the parent of a |
2099 | vfork, and have detached from the child. The child is running | |
2100 | free, and we expect it to do an exec or exit, at which point the | |
2101 | OS makes the parent schedulable again (and the target reports | |
2102 | that the vfork is done). Until the child is done with the shared | |
2103 | memory region, do not insert breakpoints in the parent, otherwise | |
2104 | the child could still trip on the parent's breakpoints. Since | |
2105 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2106 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2107 | return 0; |
2108 | ||
31e77af2 | 2109 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2110 | location, except if the breakpoint is a single-step breakpoint, |
2111 | and the breakpoint's thread is the thread which is stepping past | |
2112 | a breakpoint. */ | |
31e77af2 PA |
2113 | if ((bl->loc_type == bp_loc_software_breakpoint |
2114 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2115 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2116 | bl->address) |
2117 | /* The single-step breakpoint may be inserted at the location | |
2118 | we're trying to step if the instruction branches to itself. | |
2119 | However, the instruction won't be executed at all and it may | |
2120 | break the semantics of the instruction, for example, the | |
2121 | instruction is a conditional branch or updates some flags. | |
2122 | We can't fix it unless GDB is able to emulate the instruction | |
2123 | or switch to displaced stepping. */ | |
2124 | && !(bl->owner->type == bp_single_step | |
2125 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2126 | { |
1eb8556f SM |
2127 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2128 | paddress (bl->gdbarch, bl->address)); | |
e558d7c1 PA |
2129 | return 0; |
2130 | } | |
31e77af2 | 2131 | |
963f9c80 PA |
2132 | /* Don't insert watchpoints if we're trying to step past the |
2133 | instruction that triggered one. */ | |
2134 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2135 | && stepping_past_nonsteppable_watchpoint ()) | |
2136 | { | |
1eb8556f SM |
2137 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
2138 | "skipping watchpoint at %s:%d\n", | |
2139 | paddress (bl->gdbarch, bl->address), bl->length); | |
963f9c80 PA |
2140 | return 0; |
2141 | } | |
2142 | ||
74960c60 VP |
2143 | return 1; |
2144 | } | |
2145 | ||
934709f0 PW |
2146 | /* Same as should_be_inserted but does the check assuming |
2147 | that the location is not duplicated. */ | |
2148 | ||
2149 | static int | |
2150 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2151 | { | |
2152 | int result; | |
2153 | const int save_duplicate = bl->duplicate; | |
2154 | ||
2155 | bl->duplicate = 0; | |
2156 | result = should_be_inserted (bl); | |
2157 | bl->duplicate = save_duplicate; | |
2158 | return result; | |
2159 | } | |
2160 | ||
b775012e LM |
2161 | /* Parses a conditional described by an expression COND into an |
2162 | agent expression bytecode suitable for evaluation | |
2163 | by the bytecode interpreter. Return NULL if there was | |
2164 | any error during parsing. */ | |
2165 | ||
833177a4 | 2166 | static agent_expr_up |
b775012e LM |
2167 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2168 | { | |
833177a4 | 2169 | if (cond == NULL) |
b775012e LM |
2170 | return NULL; |
2171 | ||
833177a4 PA |
2172 | agent_expr_up aexpr; |
2173 | ||
b775012e LM |
2174 | /* We don't want to stop processing, so catch any errors |
2175 | that may show up. */ | |
a70b8144 | 2176 | try |
b775012e | 2177 | { |
036e657b | 2178 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2179 | } |
2180 | ||
230d2906 | 2181 | catch (const gdb_exception_error &ex) |
b775012e LM |
2182 | { |
2183 | /* If we got here, it means the condition could not be parsed to a valid | |
2184 | bytecode expression and thus can't be evaluated on the target's side. | |
2185 | It's no use iterating through the conditions. */ | |
b775012e LM |
2186 | } |
2187 | ||
2188 | /* We have a valid agent expression. */ | |
2189 | return aexpr; | |
2190 | } | |
2191 | ||
2192 | /* Based on location BL, create a list of breakpoint conditions to be | |
2193 | passed on to the target. If we have duplicated locations with different | |
2194 | conditions, we will add such conditions to the list. The idea is that the | |
2195 | target will evaluate the list of conditions and will only notify GDB when | |
2196 | one of them is true. */ | |
2197 | ||
2198 | static void | |
2199 | build_target_condition_list (struct bp_location *bl) | |
2200 | { | |
2201 | struct bp_location **locp = NULL, **loc2p; | |
2202 | int null_condition_or_parse_error = 0; | |
2203 | int modified = bl->needs_update; | |
2204 | struct bp_location *loc; | |
2205 | ||
8b4f3082 | 2206 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2207 | bl->target_info.conditions.clear (); |
8b4f3082 | 2208 | |
b775012e LM |
2209 | /* This is only meaningful if the target is |
2210 | evaluating conditions and if the user has | |
2211 | opted for condition evaluation on the target's | |
2212 | side. */ | |
2213 | if (gdb_evaluates_breakpoint_condition_p () | |
2214 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2215 | return; | |
2216 | ||
2217 | /* Do a first pass to check for locations with no assigned | |
7f32a4d5 PA |
2218 | conditions or conditions that fail to parse to a valid agent |
2219 | expression bytecode. If any of these happen, then it's no use to | |
2220 | send conditions to the target since this location will always | |
2221 | trigger and generate a response back to GDB. Note we consider | |
2222 | all locations at the same address irrespective of type, i.e., | |
2223 | even if the locations aren't considered duplicates (e.g., | |
2224 | software breakpoint and hardware breakpoint at the same | |
2225 | address). */ | |
b775012e LM |
2226 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) |
2227 | { | |
2228 | loc = (*loc2p); | |
2229 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2230 | { | |
2231 | if (modified) | |
2232 | { | |
b775012e LM |
2233 | /* Re-parse the conditions since something changed. In that |
2234 | case we already freed the condition bytecodes (see | |
2235 | force_breakpoint_reinsertion). We just | |
2236 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2237 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2238 | loc->cond.get ()); | |
b775012e LM |
2239 | } |
2240 | ||
2241 | /* If we have a NULL bytecode expression, it means something | |
2242 | went wrong or we have a null condition expression. */ | |
2243 | if (!loc->cond_bytecode) | |
2244 | { | |
2245 | null_condition_or_parse_error = 1; | |
2246 | break; | |
2247 | } | |
2248 | } | |
2249 | } | |
2250 | ||
2251 | /* If any of these happened, it means we will have to evaluate the conditions | |
2252 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2253 | for all the other duplicate locations, thus we free all of them here. | |
2254 | ||
2255 | This is so we have a finer control over which locations' conditions are | |
2256 | being evaluated by GDB or the remote stub. */ | |
2257 | if (null_condition_or_parse_error) | |
2258 | { | |
2259 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2260 | { | |
2261 | loc = (*loc2p); | |
2262 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2263 | { | |
2264 | /* Only go as far as the first NULL bytecode is | |
2265 | located. */ | |
2266 | if (!loc->cond_bytecode) | |
2267 | return; | |
2268 | ||
833177a4 | 2269 | loc->cond_bytecode.reset (); |
b775012e LM |
2270 | } |
2271 | } | |
2272 | } | |
2273 | ||
7f32a4d5 PA |
2274 | /* No NULL conditions or failed bytecode generation. Build a |
2275 | condition list for this location's address. If we have software | |
2276 | and hardware locations at the same address, they aren't | |
2277 | considered duplicates, but we still marge all the conditions | |
2278 | anyway, as it's simpler, and doesn't really make a practical | |
2279 | difference. */ | |
b775012e LM |
2280 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) |
2281 | { | |
2282 | loc = (*loc2p); | |
2283 | if (loc->cond | |
2284 | && is_breakpoint (loc->owner) | |
2285 | && loc->pspace->num == bl->pspace->num | |
2286 | && loc->owner->enable_state == bp_enabled | |
b5fa468f TBA |
2287 | && loc->enabled |
2288 | && !loc->disabled_by_cond) | |
3cde5c42 PA |
2289 | { |
2290 | /* Add the condition to the vector. This will be used later | |
2291 | to send the conditions to the target. */ | |
2292 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2293 | } | |
b775012e LM |
2294 | } |
2295 | ||
2296 | return; | |
2297 | } | |
2298 | ||
d3ce09f5 SS |
2299 | /* Parses a command described by string CMD into an agent expression |
2300 | bytecode suitable for evaluation by the bytecode interpreter. | |
2301 | Return NULL if there was any error during parsing. */ | |
2302 | ||
833177a4 | 2303 | static agent_expr_up |
d3ce09f5 SS |
2304 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2305 | { | |
bbc13ae3 KS |
2306 | const char *cmdrest; |
2307 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2308 | struct gdbarch *gdbarch = get_current_arch (); |
2309 | ||
833177a4 | 2310 | if (cmd == NULL) |
d3ce09f5 SS |
2311 | return NULL; |
2312 | ||
2313 | cmdrest = cmd; | |
2314 | ||
2315 | if (*cmdrest == ',') | |
2316 | ++cmdrest; | |
f1735a53 | 2317 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2318 | |
2319 | if (*cmdrest++ != '"') | |
2320 | error (_("No format string following the location")); | |
2321 | ||
2322 | format_start = cmdrest; | |
2323 | ||
8e481c3b | 2324 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2325 | |
2326 | format_end = cmdrest; | |
2327 | ||
2328 | if (*cmdrest++ != '"') | |
2329 | error (_("Bad format string, non-terminated '\"'.")); | |
2330 | ||
f1735a53 | 2331 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2332 | |
2333 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2334 | error (_("Invalid argument syntax")); | |
2335 | ||
2336 | if (*cmdrest == ',') | |
2337 | cmdrest++; | |
f1735a53 | 2338 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2339 | |
2340 | /* For each argument, make an expression. */ | |
2341 | ||
8e481c3b | 2342 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2343 | while (*cmdrest != '\0') |
2344 | { | |
bbc13ae3 | 2345 | const char *cmd1; |
d3ce09f5 SS |
2346 | |
2347 | cmd1 = cmdrest; | |
4d01a485 | 2348 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2349 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2350 | cmdrest = cmd1; |
2351 | if (*cmdrest == ',') | |
2352 | ++cmdrest; | |
2353 | } | |
2354 | ||
833177a4 PA |
2355 | agent_expr_up aexpr; |
2356 | ||
d3ce09f5 SS |
2357 | /* We don't want to stop processing, so catch any errors |
2358 | that may show up. */ | |
a70b8144 | 2359 | try |
d3ce09f5 | 2360 | { |
036e657b JB |
2361 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2362 | format_start, format_end - format_start, | |
8e481c3b | 2363 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2364 | } |
230d2906 | 2365 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2366 | { |
2367 | /* If we got here, it means the command could not be parsed to a valid | |
2368 | bytecode expression and thus can't be evaluated on the target's side. | |
2369 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2370 | } |
492d29ea | 2371 | |
d3ce09f5 SS |
2372 | /* We have a valid agent expression, return it. */ |
2373 | return aexpr; | |
2374 | } | |
2375 | ||
2376 | /* Based on location BL, create a list of breakpoint commands to be | |
2377 | passed on to the target. If we have duplicated locations with | |
2378 | different commands, we will add any such to the list. */ | |
2379 | ||
2380 | static void | |
2381 | build_target_command_list (struct bp_location *bl) | |
2382 | { | |
2383 | struct bp_location **locp = NULL, **loc2p; | |
2384 | int null_command_or_parse_error = 0; | |
2385 | int modified = bl->needs_update; | |
2386 | struct bp_location *loc; | |
2387 | ||
3cde5c42 PA |
2388 | /* Clear commands left over from a previous insert. */ |
2389 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2390 | |
41fac0cf | 2391 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2392 | return; |
2393 | ||
41fac0cf PA |
2394 | /* For now, limit to agent-style dprintf breakpoints. */ |
2395 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2396 | return; |
2397 | ||
7f32a4d5 PA |
2398 | /* For now, if we have any location at the same address that isn't a |
2399 | dprintf, don't install the target-side commands, as that would | |
2400 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf PA |
2401 | control. */ |
2402 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2403 | { | |
2404 | loc = (*loc2p); | |
2405 | if (is_breakpoint (loc->owner) | |
2406 | && loc->pspace->num == bl->pspace->num | |
2407 | && loc->owner->type != bp_dprintf) | |
2408 | return; | |
2409 | } | |
2410 | ||
d3ce09f5 SS |
2411 | /* Do a first pass to check for locations with no assigned |
2412 | conditions or conditions that fail to parse to a valid agent expression | |
2413 | bytecode. If any of these happen, then it's no use to send conditions | |
2414 | to the target since this location will always trigger and generate a | |
2415 | response back to GDB. */ | |
2416 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2417 | { | |
2418 | loc = (*loc2p); | |
2419 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2420 | { | |
2421 | if (modified) | |
2422 | { | |
d3ce09f5 SS |
2423 | /* Re-parse the commands since something changed. In that |
2424 | case we already freed the command bytecodes (see | |
2425 | force_breakpoint_reinsertion). We just | |
2426 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2427 | loc->cmd_bytecode |
2428 | = parse_cmd_to_aexpr (bl->address, | |
2429 | loc->owner->extra_string); | |
d3ce09f5 SS |
2430 | } |
2431 | ||
2432 | /* If we have a NULL bytecode expression, it means something | |
2433 | went wrong or we have a null command expression. */ | |
2434 | if (!loc->cmd_bytecode) | |
2435 | { | |
2436 | null_command_or_parse_error = 1; | |
2437 | break; | |
2438 | } | |
2439 | } | |
2440 | } | |
2441 | ||
2442 | /* If anything failed, then we're not doing target-side commands, | |
2443 | and so clean up. */ | |
2444 | if (null_command_or_parse_error) | |
2445 | { | |
2446 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2447 | { | |
2448 | loc = (*loc2p); | |
2449 | if (is_breakpoint (loc->owner) | |
2450 | && loc->pspace->num == bl->pspace->num) | |
2451 | { | |
2452 | /* Only go as far as the first NULL bytecode is | |
2453 | located. */ | |
40fb6c5e | 2454 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2455 | return; |
2456 | ||
833177a4 | 2457 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2458 | } |
2459 | } | |
2460 | } | |
2461 | ||
7f32a4d5 PA |
2462 | /* No NULL commands or failed bytecode generation. Build a command |
2463 | list for all duplicate locations at this location's address. | |
2464 | Note that here we must care for whether the breakpoint location | |
2465 | types are considered duplicates, otherwise, say, if we have a | |
2466 | software and hardware location at the same address, the target | |
2467 | could end up running the commands twice. For the moment, we only | |
2468 | support targets-side commands with dprintf, but it doesn't hurt | |
2469 | to be pedantically correct in case that changes. */ | |
d3ce09f5 SS |
2470 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) |
2471 | { | |
2472 | loc = (*loc2p); | |
7f32a4d5 PA |
2473 | if (breakpoint_locations_match (bl, loc) |
2474 | && loc->owner->extra_string | |
d3ce09f5 SS |
2475 | && is_breakpoint (loc->owner) |
2476 | && loc->pspace->num == bl->pspace->num | |
2477 | && loc->owner->enable_state == bp_enabled | |
b5fa468f TBA |
2478 | && loc->enabled |
2479 | && !loc->disabled_by_cond) | |
3cde5c42 PA |
2480 | { |
2481 | /* Add the command to the vector. This will be used later | |
2482 | to send the commands to the target. */ | |
2483 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2484 | } | |
d3ce09f5 SS |
2485 | } |
2486 | ||
2487 | bl->target_info.persist = 0; | |
2488 | /* Maybe flag this location as persistent. */ | |
2489 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2490 | bl->target_info.persist = 1; | |
2491 | } | |
2492 | ||
833b7ab5 YQ |
2493 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2494 | of breakpoint according to ADDR except single-step breakpoint. | |
2495 | Get the kind of single-step breakpoint according to the current | |
2496 | registers state. */ | |
cd6c3b4f YQ |
2497 | |
2498 | static int | |
2499 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2500 | { | |
833b7ab5 YQ |
2501 | if (bl->owner->type == bp_single_step) |
2502 | { | |
2503 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2504 | struct regcache *regcache; | |
2505 | ||
00431a78 | 2506 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2507 | |
2508 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2509 | regcache, addr); | |
2510 | } | |
2511 | else | |
2512 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2513 | } |
2514 | ||
35df4500 TJB |
2515 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2516 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2517 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2518 | Returns 0 for success, 1 if the bp_location type is not supported or |
2519 | -1 for failure. | |
879bfdc2 | 2520 | |
4a64f543 MS |
2521 | NOTE drow/2003-09-09: This routine could be broken down to an |
2522 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2523 | static int |
35df4500 | 2524 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2525 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2526 | int *disabled_breaks, |
dd61ec5c MW |
2527 | int *hw_breakpoint_error, |
2528 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2529 | { |
cc06b668 | 2530 | gdb_exception bp_excpt; |
879bfdc2 | 2531 | |
b775012e | 2532 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2533 | return 0; |
2534 | ||
35c63cd8 JB |
2535 | /* Note we don't initialize bl->target_info, as that wipes out |
2536 | the breakpoint location's shadow_contents if the breakpoint | |
2537 | is still inserted at that location. This in turn breaks | |
2538 | target_read_memory which depends on these buffers when | |
2539 | a memory read is requested at the breakpoint location: | |
2540 | Once the target_info has been wiped, we fail to see that | |
2541 | we have a breakpoint inserted at that address and thus | |
2542 | read the breakpoint instead of returning the data saved in | |
2543 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2544 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2545 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2546 | bl->target_info.length = bl->length; |
8181d85f | 2547 | |
b775012e LM |
2548 | /* When working with target-side conditions, we must pass all the conditions |
2549 | for the same breakpoint address down to the target since GDB will not | |
2550 | insert those locations. With a list of breakpoint conditions, the target | |
2551 | can decide when to stop and notify GDB. */ | |
2552 | ||
2553 | if (is_breakpoint (bl->owner)) | |
2554 | { | |
2555 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2556 | build_target_command_list (bl); |
2557 | /* Reset the modification marker. */ | |
b775012e LM |
2558 | bl->needs_update = 0; |
2559 | } | |
2560 | ||
7f32a4d5 PA |
2561 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2562 | set at a read-only address, then a breakpoint location will have | |
2563 | been changed to hardware breakpoint before we get here. If it is | |
2564 | "off" however, error out before actually trying to insert the | |
2565 | breakpoint, with a nicer error message. */ | |
35df4500 | 2566 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2567 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2568 | { |
7f32a4d5 | 2569 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2570 | |
7f32a4d5 PA |
2571 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2572 | { | |
2573 | fprintf_unfiltered (tmp_error_stream, | |
2574 | _("Cannot insert breakpoint %d.\n" | |
2575 | "Cannot set software breakpoint " | |
2576 | "at read-only address %s\n"), | |
2577 | bl->owner->number, | |
2578 | paddress (bl->gdbarch, bl->address)); | |
2579 | return 1; | |
765dc015 | 2580 | } |
7f32a4d5 PA |
2581 | } |
2582 | ||
2583 | if (bl->loc_type == bp_loc_software_breakpoint | |
2584 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2585 | { | |
879bfdc2 DJ |
2586 | /* First check to see if we have to handle an overlay. */ |
2587 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2588 | || bl->section == NULL |
2589 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2590 | { |
2591 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2592 | try |
dd61ec5c | 2593 | { |
0000e5cc PA |
2594 | int val; |
2595 | ||
dd61ec5c | 2596 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2597 | if (val) |
688fca4f | 2598 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2599 | } |
94aeb44b | 2600 | catch (gdb_exception &e) |
dd61ec5c | 2601 | { |
94aeb44b | 2602 | bp_excpt = std::move (e); |
dd61ec5c | 2603 | } |
879bfdc2 DJ |
2604 | } |
2605 | else | |
2606 | { | |
4a64f543 | 2607 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2608 | Shall we set a breakpoint at the LMA? */ |
2609 | if (!overlay_events_enabled) | |
2610 | { | |
2611 | /* Yes -- overlay event support is not active, | |
2612 | so we must try to set a breakpoint at the LMA. | |
2613 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2614 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2615 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2616 | bl->owner->number); |
879bfdc2 DJ |
2617 | else |
2618 | { | |
35df4500 TJB |
2619 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2620 | bl->section); | |
879bfdc2 | 2621 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2622 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2623 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2624 | |
2625 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2626 | try |
0000e5cc PA |
2627 | { |
2628 | int val; | |
2629 | ||
579c6ad9 | 2630 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2631 | = breakpoint_kind (bl, &addr); |
2632 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2633 | val = target_insert_breakpoint (bl->gdbarch, |
2634 | &bl->overlay_target_info); | |
2635 | if (val) | |
688fca4f PA |
2636 | bp_excpt |
2637 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2638 | } |
94aeb44b | 2639 | catch (gdb_exception &e) |
0000e5cc | 2640 | { |
94aeb44b | 2641 | bp_excpt = std::move (e); |
0000e5cc PA |
2642 | } |
2643 | ||
688fca4f | 2644 | if (bp_excpt.reason != 0) |
99361f52 | 2645 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2646 | "Overlay breakpoint %d " |
2647 | "failed: in ROM?\n", | |
35df4500 | 2648 | bl->owner->number); |
879bfdc2 DJ |
2649 | } |
2650 | } | |
2651 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2652 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2653 | { |
2654 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2655 | try |
dd61ec5c | 2656 | { |
0000e5cc PA |
2657 | int val; |
2658 | ||
dd61ec5c | 2659 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2660 | if (val) |
688fca4f | 2661 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2662 | } |
94aeb44b | 2663 | catch (gdb_exception &e) |
dd61ec5c | 2664 | { |
94aeb44b | 2665 | bp_excpt = std::move (e); |
dd61ec5c | 2666 | } |
879bfdc2 DJ |
2667 | } |
2668 | else | |
2669 | { | |
2670 | /* No. This breakpoint will not be inserted. | |
2671 | No error, but do not mark the bp as 'inserted'. */ | |
2672 | return 0; | |
2673 | } | |
2674 | } | |
2675 | ||
688fca4f | 2676 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2677 | { |
2678 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2679 | |
2680 | /* In some cases, we might not be able to insert a | |
2681 | breakpoint in a shared library that has already been | |
2682 | removed, but we have not yet processed the shlib unload | |
2683 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2684 | breakpoint insertion themselves can't tell why the |
2685 | breakpoint insertion failed (e.g., the remote target | |
2686 | doesn't define error codes), so we must treat generic | |
2687 | errors as memory errors. */ | |
688fca4f PA |
2688 | if (bp_excpt.reason == RETURN_ERROR |
2689 | && (bp_excpt.error == GENERIC_ERROR | |
2690 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2691 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2692 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2693 | || shared_objfile_contains_address_p (bl->pspace, |
2694 | bl->address))) | |
879bfdc2 | 2695 | { |
4a64f543 | 2696 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2697 | bl->shlib_disabled = 1; |
76727919 | 2698 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2699 | if (!*disabled_breaks) |
2700 | { | |
2701 | fprintf_unfiltered (tmp_error_stream, | |
2702 | "Cannot insert breakpoint %d.\n", | |
2703 | bl->owner->number); | |
2704 | fprintf_unfiltered (tmp_error_stream, | |
2705 | "Temporarily disabling shared " | |
2706 | "library breakpoints:\n"); | |
2707 | } | |
2708 | *disabled_breaks = 1; | |
879bfdc2 | 2709 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2710 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2711 | return 0; |
879bfdc2 DJ |
2712 | } |
2713 | else | |
879bfdc2 | 2714 | { |
35df4500 | 2715 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2716 | { |
0000e5cc | 2717 | *hw_breakpoint_error = 1; |
688fca4f | 2718 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2719 | fprintf_unfiltered (tmp_error_stream, |
2720 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2721 | bl->owner->number, |
2722 | bp_excpt.message ? ":" : ".\n"); | |
2723 | if (bp_excpt.message != NULL) | |
2724 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2725 | bp_excpt.what ()); |
879bfdc2 DJ |
2726 | } |
2727 | else | |
2728 | { | |
688fca4f | 2729 | if (bp_excpt.message == NULL) |
0000e5cc | 2730 | { |
1ccbe998 | 2731 | std::string message |
0000e5cc PA |
2732 | = memory_error_message (TARGET_XFER_E_IO, |
2733 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2734 | |
2735 | fprintf_unfiltered (tmp_error_stream, | |
2736 | "Cannot insert breakpoint %d.\n" | |
2737 | "%s\n", | |
1ccbe998 | 2738 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2739 | } |
2740 | else | |
2741 | { | |
2742 | fprintf_unfiltered (tmp_error_stream, | |
2743 | "Cannot insert breakpoint %d: %s\n", | |
2744 | bl->owner->number, | |
3d6e9d23 | 2745 | bp_excpt.what ()); |
0000e5cc | 2746 | } |
879bfdc2 | 2747 | } |
0000e5cc | 2748 | return 1; |
879bfdc2 DJ |
2749 | |
2750 | } | |
2751 | } | |
2752 | else | |
35df4500 | 2753 | bl->inserted = 1; |
879bfdc2 | 2754 | |
0000e5cc | 2755 | return 0; |
879bfdc2 DJ |
2756 | } |
2757 | ||
35df4500 | 2758 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2759 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2760 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2761 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2762 | { |
0000e5cc PA |
2763 | int val; |
2764 | ||
77b06cd7 TJB |
2765 | gdb_assert (bl->owner->ops != NULL |
2766 | && bl->owner->ops->insert_location != NULL); | |
2767 | ||
2768 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2769 | |
2770 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2771 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2772 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2773 | { |
2774 | struct bp_location *loc, **loc_temp; | |
2775 | ||
2776 | /* But don't try to insert it, if there's already another | |
2777 | hw_access location that would be considered a duplicate | |
2778 | of this one. */ | |
2779 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2780 | if (loc != bl |
85d721b8 | 2781 | && loc->watchpoint_type == hw_access |
35df4500 | 2782 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2783 | { |
35df4500 TJB |
2784 | bl->duplicate = 1; |
2785 | bl->inserted = 1; | |
2786 | bl->target_info = loc->target_info; | |
2787 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2788 | val = 0; |
2789 | break; | |
2790 | } | |
2791 | ||
2792 | if (val == 1) | |
2793 | { | |
77b06cd7 TJB |
2794 | bl->watchpoint_type = hw_access; |
2795 | val = bl->owner->ops->insert_location (bl); | |
2796 | ||
2797 | if (val) | |
2798 | /* Back to the original value. */ | |
2799 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2800 | } |
2801 | } | |
2802 | ||
35df4500 | 2803 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2804 | } |
2805 | ||
35df4500 | 2806 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2807 | { |
0000e5cc PA |
2808 | int val; |
2809 | ||
77b06cd7 TJB |
2810 | gdb_assert (bl->owner->ops != NULL |
2811 | && bl->owner->ops->insert_location != NULL); | |
2812 | ||
2813 | val = bl->owner->ops->insert_location (bl); | |
2814 | if (val) | |
2815 | { | |
2816 | bl->owner->enable_state = bp_disabled; | |
2817 | ||
2818 | if (val == 1) | |
2819 | warning (_("\ | |
2820 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2821 | of catchpoint."), bl->owner->number); | |
2822 | else | |
2823 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2824 | } | |
2825 | ||
2826 | bl->inserted = (val == 0); | |
1640b821 DJ |
2827 | |
2828 | /* We've already printed an error message if there was a problem | |
2829 | inserting this catchpoint, and we've disabled the catchpoint, | |
2830 | so just return success. */ | |
2831 | return 0; | |
879bfdc2 DJ |
2832 | } |
2833 | ||
2834 | return 0; | |
2835 | } | |
2836 | ||
6c95b8df PA |
2837 | /* This function is called when program space PSPACE is about to be |
2838 | deleted. It takes care of updating breakpoints to not reference | |
2839 | PSPACE anymore. */ | |
2840 | ||
2841 | void | |
2842 | breakpoint_program_space_exit (struct program_space *pspace) | |
2843 | { | |
2844 | struct breakpoint *b, *b_temp; | |
876fa593 | 2845 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2846 | |
2847 | /* Remove any breakpoint that was set through this program space. */ | |
2848 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2849 | { | |
2850 | if (b->pspace == pspace) | |
2851 | delete_breakpoint (b); | |
2852 | } | |
2853 | ||
2854 | /* Breakpoints set through other program spaces could have locations | |
2855 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2856 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2857 | { |
2858 | struct bp_location *tmp; | |
2859 | ||
2860 | if (loc->pspace == pspace) | |
2861 | { | |
2bdf28a0 | 2862 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2863 | if (loc->owner->loc == loc) |
2864 | loc->owner->loc = loc->next; | |
2865 | else | |
2866 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2867 | if (tmp->next == loc) | |
2868 | { | |
2869 | tmp->next = loc->next; | |
2870 | break; | |
2871 | } | |
2872 | } | |
2873 | } | |
2874 | ||
2875 | /* Now update the global location list to permanently delete the | |
2876 | removed locations above. */ | |
44702360 | 2877 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2878 | } |
2879 | ||
74960c60 VP |
2880 | /* Make sure all breakpoints are inserted in inferior. |
2881 | Throws exception on any error. | |
2882 | A breakpoint that is already inserted won't be inserted | |
2883 | again, so calling this function twice is safe. */ | |
2884 | void | |
2885 | insert_breakpoints (void) | |
2886 | { | |
2887 | struct breakpoint *bpt; | |
2888 | ||
2889 | ALL_BREAKPOINTS (bpt) | |
2890 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2891 | { |
2892 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2893 | ||
2894 | update_watchpoint (w, 0 /* don't reparse. */); | |
2895 | } | |
74960c60 | 2896 | |
04086b45 PA |
2897 | /* Updating watchpoints creates new locations, so update the global |
2898 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
2899 | ignore breakpoints_always_inserted_mode. Also, |
2900 | update_global_location_list tries to "upgrade" software | |
2901 | breakpoints to hardware breakpoints to handle "set breakpoint | |
2902 | auto-hw", so we need to call it even if we don't have new | |
2903 | locations. */ | |
04086b45 | 2904 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
2905 | } |
2906 | ||
20388dd6 YQ |
2907 | /* Invoke CALLBACK for each of bp_location. */ |
2908 | ||
2909 | void | |
2910 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2911 | { | |
2912 | struct bp_location *loc, **loc_tmp; | |
2913 | ||
2914 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2915 | { | |
2916 | callback (loc, NULL); | |
2917 | } | |
2918 | } | |
2919 | ||
b775012e LM |
2920 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2921 | target. It is the case with deleting and disabling of breakpoints when using | |
2922 | always-inserted mode. */ | |
2923 | ||
2924 | static void | |
2925 | update_inserted_breakpoint_locations (void) | |
2926 | { | |
2927 | struct bp_location *bl, **blp_tmp; | |
2928 | int error_flag = 0; | |
2929 | int val = 0; | |
2930 | int disabled_breaks = 0; | |
2931 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2932 | int hw_bp_details_reported = 0; |
b775012e | 2933 | |
d7e74731 | 2934 | string_file tmp_error_stream; |
b775012e LM |
2935 | |
2936 | /* Explicitly mark the warning -- this will only be printed if | |
2937 | there was an error. */ | |
d7e74731 | 2938 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2939 | |
5ed8105e | 2940 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2941 | |
2942 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2943 | { | |
2944 | /* We only want to update software breakpoints and hardware | |
2945 | breakpoints. */ | |
2946 | if (!is_breakpoint (bl->owner)) | |
2947 | continue; | |
2948 | ||
2949 | /* We only want to update locations that are already inserted | |
2950 | and need updating. This is to avoid unwanted insertion during | |
2951 | deletion of breakpoints. */ | |
4daf1902 | 2952 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2953 | continue; |
2954 | ||
2955 | switch_to_program_space_and_thread (bl->pspace); | |
2956 | ||
2957 | /* For targets that support global breakpoints, there's no need | |
2958 | to select an inferior to insert breakpoint to. In fact, even | |
2959 | if we aren't attached to any process yet, we should still | |
2960 | insert breakpoints. */ | |
f5656ead | 2961 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 2962 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
2963 | continue; |
2964 | ||
d7e74731 | 2965 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2966 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2967 | if (val) |
2968 | error_flag = val; | |
2969 | } | |
2970 | ||
2971 | if (error_flag) | |
2972 | { | |
223ffa71 | 2973 | target_terminal::ours_for_output (); |
b775012e LM |
2974 | error_stream (tmp_error_stream); |
2975 | } | |
b775012e LM |
2976 | } |
2977 | ||
c30eee59 | 2978 | /* Used when starting or continuing the program. */ |
c906108c | 2979 | |
74960c60 VP |
2980 | static void |
2981 | insert_breakpoint_locations (void) | |
c906108c | 2982 | { |
a5606eee | 2983 | struct breakpoint *bpt; |
35df4500 | 2984 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2985 | int error_flag = 0; |
c906108c | 2986 | int val = 0; |
3fbb6ffa | 2987 | int disabled_breaks = 0; |
81d0cc19 | 2988 | int hw_breakpoint_error = 0; |
dd61ec5c | 2989 | int hw_bp_error_explained_already = 0; |
c906108c | 2990 | |
d7e74731 PA |
2991 | string_file tmp_error_stream; |
2992 | ||
81d0cc19 GS |
2993 | /* Explicitly mark the warning -- this will only be printed if |
2994 | there was an error. */ | |
d7e74731 | 2995 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2996 | |
5ed8105e | 2997 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2998 | |
35df4500 | 2999 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 3000 | { |
b775012e | 3001 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3002 | continue; |
3003 | ||
4a64f543 MS |
3004 | /* There is no point inserting thread-specific breakpoints if |
3005 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3006 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3007 | if (bl->owner->thread != -1 |
5d5658a1 | 3008 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3009 | continue; |
3010 | ||
35df4500 | 3011 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3012 | |
3013 | /* For targets that support global breakpoints, there's no need | |
3014 | to select an inferior to insert breakpoint to. In fact, even | |
3015 | if we aren't attached to any process yet, we should still | |
3016 | insert breakpoints. */ | |
f5656ead | 3017 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3018 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3019 | continue; |
3020 | ||
d7e74731 | 3021 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3022 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3023 | if (val) |
eacd795a | 3024 | error_flag = val; |
879bfdc2 | 3025 | } |
c906108c | 3026 | |
4a64f543 MS |
3027 | /* If we failed to insert all locations of a watchpoint, remove |
3028 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3029 | ALL_BREAKPOINTS (bpt) |
3030 | { | |
3031 | int some_failed = 0; | |
3032 | struct bp_location *loc; | |
3033 | ||
3034 | if (!is_hardware_watchpoint (bpt)) | |
3035 | continue; | |
3036 | ||
d6b74ac4 | 3037 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3038 | continue; |
74960c60 VP |
3039 | |
3040 | if (bpt->disposition == disp_del_at_next_stop) | |
3041 | continue; | |
a5606eee VP |
3042 | |
3043 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3044 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3045 | { |
3046 | some_failed = 1; | |
3047 | break; | |
3048 | } | |
3049 | if (some_failed) | |
3050 | { | |
3051 | for (loc = bpt->loc; loc; loc = loc->next) | |
3052 | if (loc->inserted) | |
834c0d03 | 3053 | remove_breakpoint (loc); |
a5606eee VP |
3054 | |
3055 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3056 | tmp_error_stream.printf ("Could not insert " |
3057 | "hardware watchpoint %d.\n", | |
3058 | bpt->number); | |
eacd795a | 3059 | error_flag = -1; |
a5606eee VP |
3060 | } |
3061 | } | |
3062 | ||
eacd795a | 3063 | if (error_flag) |
81d0cc19 GS |
3064 | { |
3065 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3066 | message about possibly exhausted resources. */ | |
dd61ec5c | 3067 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3068 | { |
d7e74731 | 3069 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3070 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3071 | } |
223ffa71 | 3072 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3073 | error_stream (tmp_error_stream); |
3074 | } | |
c906108c SS |
3075 | } |
3076 | ||
c30eee59 TJB |
3077 | /* Used when the program stops. |
3078 | Returns zero if successful, or non-zero if there was a problem | |
3079 | removing a breakpoint location. */ | |
3080 | ||
c906108c | 3081 | int |
fba45db2 | 3082 | remove_breakpoints (void) |
c906108c | 3083 | { |
35df4500 | 3084 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3085 | int val = 0; |
c906108c | 3086 | |
35df4500 | 3087 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3088 | { |
1e4d1764 | 3089 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3090 | val |= remove_breakpoint (bl); |
c5aa993b | 3091 | } |
3a1bae8e | 3092 | return val; |
c906108c SS |
3093 | } |
3094 | ||
49fa26b0 PA |
3095 | /* When a thread exits, remove breakpoints that are related to |
3096 | that thread. */ | |
3097 | ||
3098 | static void | |
3099 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3100 | { | |
3101 | struct breakpoint *b, *b_tmp; | |
3102 | ||
3103 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3104 | { | |
5d5658a1 | 3105 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3106 | { |
3107 | b->disposition = disp_del_at_next_stop; | |
3108 | ||
3109 | printf_filtered (_("\ | |
43792cf0 PA |
3110 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3111 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3112 | |
3113 | /* Hide it from the user. */ | |
3114 | b->number = 0; | |
3115 | } | |
3116 | } | |
3117 | } | |
3118 | ||
f3869b1a | 3119 | /* See breakpoint.h. */ |
6c95b8df | 3120 | |
f3869b1a | 3121 | void |
00431a78 | 3122 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3123 | { |
35df4500 | 3124 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3125 | int val; |
6c95b8df | 3126 | |
35df4500 | 3127 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3128 | { |
35df4500 | 3129 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3130 | continue; |
3131 | ||
fc126975 | 3132 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3133 | { |
834c0d03 | 3134 | val = remove_breakpoint (bl); |
6c95b8df | 3135 | if (val != 0) |
f3869b1a | 3136 | return; |
6c95b8df PA |
3137 | } |
3138 | } | |
6c95b8df PA |
3139 | } |
3140 | ||
e58b0e63 PA |
3141 | static int internal_breakpoint_number = -1; |
3142 | ||
84f4c1fe PM |
3143 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3144 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3145 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3146 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3147 | breakpoint_count and that value incremented. Internal breakpoints |
3148 | do not set the internal var bpnum. */ | |
3149 | static void | |
3150 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3151 | { | |
3152 | if (internal) | |
3153 | b->number = internal_breakpoint_number--; | |
3154 | else | |
3155 | { | |
3156 | set_breakpoint_count (breakpoint_count + 1); | |
3157 | b->number = breakpoint_count; | |
3158 | } | |
3159 | } | |
3160 | ||
e62c965a | 3161 | static struct breakpoint * |
a6d9a66e | 3162 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3163 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3164 | const struct breakpoint_ops *ops) |
e62c965a | 3165 | { |
51abb421 | 3166 | symtab_and_line sal; |
e62c965a PP |
3167 | sal.pc = address; |
3168 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3169 | sal.pspace = current_program_space; |
e62c965a | 3170 | |
51abb421 | 3171 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3172 | b->number = internal_breakpoint_number--; |
3173 | b->disposition = disp_donttouch; | |
3174 | ||
3175 | return b; | |
3176 | } | |
3177 | ||
17450429 PP |
3178 | static const char *const longjmp_names[] = |
3179 | { | |
3180 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3181 | }; | |
3182 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3183 | ||
3184 | /* Per-objfile data private to breakpoint.c. */ | |
3185 | struct breakpoint_objfile_data | |
3186 | { | |
3187 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3188 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3189 | |
3190 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3191 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3192 | |
28106bc2 | 3193 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3194 | int longjmp_searched = 0; |
28106bc2 | 3195 | |
45461e0d SM |
3196 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3197 | references. */ | |
3198 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3199 | |
17450429 | 3200 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3201 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3202 | |
3203 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3204 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3205 | |
3206 | /* True if we have looked for exception probes. */ | |
43dce439 | 3207 | int exception_searched = 0; |
28106bc2 | 3208 | |
45461e0d SM |
3209 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3210 | references. */ | |
3211 | std::vector<probe *> exception_probes; | |
17450429 PP |
3212 | }; |
3213 | ||
51d3063a TT |
3214 | static const struct objfile_key<breakpoint_objfile_data> |
3215 | breakpoint_objfile_key; | |
17450429 PP |
3216 | |
3217 | /* Minimal symbol not found sentinel. */ | |
3218 | static struct minimal_symbol msym_not_found; | |
3219 | ||
3220 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3221 | ||
3222 | static int | |
3223 | msym_not_found_p (const struct minimal_symbol *msym) | |
3224 | { | |
3225 | return msym == &msym_not_found; | |
3226 | } | |
3227 | ||
3228 | /* Return per-objfile data needed by breakpoint.c. | |
3229 | Allocate the data if necessary. */ | |
3230 | ||
3231 | static struct breakpoint_objfile_data * | |
3232 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3233 | { | |
3234 | struct breakpoint_objfile_data *bp_objfile_data; | |
3235 | ||
51d3063a | 3236 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3237 | if (bp_objfile_data == NULL) |
51d3063a | 3238 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3239 | return bp_objfile_data; |
3240 | } | |
3241 | ||
e62c965a | 3242 | static void |
af02033e | 3243 | create_overlay_event_breakpoint (void) |
e62c965a | 3244 | { |
af02033e | 3245 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3246 | |
2030c079 | 3247 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3248 | { |
3249 | struct breakpoint *b; | |
17450429 PP |
3250 | struct breakpoint_objfile_data *bp_objfile_data; |
3251 | CORE_ADDR addr; | |
67994074 | 3252 | struct explicit_location explicit_loc; |
69de3c6a | 3253 | |
17450429 PP |
3254 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3255 | ||
3b7344d5 | 3256 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3257 | continue; |
3258 | ||
3b7344d5 | 3259 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3260 | { |
3b7344d5 | 3261 | struct bound_minimal_symbol m; |
17450429 PP |
3262 | |
3263 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3264 | if (m.minsym == NULL) |
17450429 PP |
3265 | { |
3266 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3267 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3268 | continue; |
3269 | } | |
3270 | bp_objfile_data->overlay_msym = m; | |
3271 | } | |
e62c965a | 3272 | |
77e371c0 | 3273 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
08feed99 | 3274 | b = create_internal_breakpoint (objfile->arch (), addr, |
06edf0c0 PA |
3275 | bp_overlay_event, |
3276 | &internal_breakpoint_ops); | |
67994074 KS |
3277 | initialize_explicit_location (&explicit_loc); |
3278 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3279 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3280 | |
69de3c6a PP |
3281 | if (overlay_debugging == ovly_auto) |
3282 | { | |
3283 | b->enable_state = bp_enabled; | |
3284 | overlay_events_enabled = 1; | |
3285 | } | |
3286 | else | |
3287 | { | |
3288 | b->enable_state = bp_disabled; | |
3289 | overlay_events_enabled = 0; | |
3290 | } | |
e62c965a | 3291 | } |
e62c965a PP |
3292 | } |
3293 | ||
0fd8e87f | 3294 | static void |
af02033e | 3295 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3296 | { |
5ed8105e | 3297 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3298 | |
94c93c35 TT |
3299 | for (struct program_space *pspace : program_spaces) |
3300 | { | |
3301 | set_current_program_space (pspace); | |
af02033e | 3302 | |
94c93c35 TT |
3303 | for (objfile *objfile : current_program_space->objfiles ()) |
3304 | { | |
3305 | int i; | |
3306 | struct gdbarch *gdbarch; | |
3307 | struct breakpoint_objfile_data *bp_objfile_data; | |
0fd8e87f | 3308 | |
94c93c35 | 3309 | gdbarch = objfile->arch (); |
0fd8e87f | 3310 | |
94c93c35 | 3311 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3312 | |
94c93c35 TT |
3313 | if (!bp_objfile_data->longjmp_searched) |
3314 | { | |
3315 | std::vector<probe *> ret | |
3316 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3317 | |
94c93c35 TT |
3318 | if (!ret.empty ()) |
3319 | { | |
3320 | /* We are only interested in checking one element. */ | |
3321 | probe *p = ret[0]; | |
aed57c53 | 3322 | |
94c93c35 TT |
3323 | if (!p->can_evaluate_arguments ()) |
3324 | { | |
3325 | /* We cannot use the probe interface here, | |
3326 | because it does not know how to evaluate | |
3327 | arguments. */ | |
3328 | ret.clear (); | |
3329 | } | |
3330 | } | |
3331 | bp_objfile_data->longjmp_probes = ret; | |
3332 | bp_objfile_data->longjmp_searched = 1; | |
3333 | } | |
25f9533e | 3334 | |
94c93c35 TT |
3335 | if (!bp_objfile_data->longjmp_probes.empty ()) |
3336 | { | |
3337 | for (probe *p : bp_objfile_data->longjmp_probes) | |
3338 | { | |
3339 | struct breakpoint *b; | |
3340 | ||
3341 | b = create_internal_breakpoint (gdbarch, | |
3342 | p->get_relocated_address (objfile), | |
3343 | bp_longjmp_master, | |
3344 | &internal_breakpoint_ops); | |
3345 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3346 | b->enable_state = bp_disabled; | |
3347 | } | |
28106bc2 | 3348 | |
94c93c35 TT |
3349 | continue; |
3350 | } | |
28106bc2 | 3351 | |
94c93c35 TT |
3352 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3353 | continue; | |
28106bc2 | 3354 | |
94c93c35 TT |
3355 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
3356 | { | |
3357 | struct breakpoint *b; | |
3358 | const char *func_name; | |
3359 | CORE_ADDR addr; | |
3360 | struct explicit_location explicit_loc; | |
0fd8e87f | 3361 | |
94c93c35 TT |
3362 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
3363 | continue; | |
17450429 | 3364 | |
94c93c35 TT |
3365 | func_name = longjmp_names[i]; |
3366 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3367 | { | |
3368 | struct bound_minimal_symbol m; | |
aed57c53 | 3369 | |
94c93c35 TT |
3370 | m = lookup_minimal_symbol_text (func_name, objfile); |
3371 | if (m.minsym == NULL) | |
3372 | { | |
3373 | /* Prevent future lookups in this objfile. */ | |
3374 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
3375 | continue; | |
3376 | } | |
3377 | bp_objfile_data->longjmp_msym[i] = m; | |
3378 | } | |
17450429 | 3379 | |
94c93c35 TT |
3380 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3381 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3382 | &internal_breakpoint_ops); | |
3383 | initialize_explicit_location (&explicit_loc); | |
3384 | explicit_loc.function_name = ASTRDUP (func_name); | |
3385 | b->location = new_explicit_location (&explicit_loc); | |
3386 | b->enable_state = bp_disabled; | |
3387 | } | |
3388 | } | |
3389 | } | |
0fd8e87f UW |
3390 | } |
3391 | ||
af02033e | 3392 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3393 | static void |
af02033e | 3394 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3395 | { |
af02033e | 3396 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3397 | |
5ed8105e | 3398 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3399 | |
94c93c35 TT |
3400 | for (struct program_space *pspace : program_spaces) |
3401 | { | |
3402 | CORE_ADDR addr; | |
17450429 | 3403 | |
94c93c35 | 3404 | set_current_program_space (pspace); |
17450429 | 3405 | |
94c93c35 TT |
3406 | for (objfile *objfile : current_program_space->objfiles ()) |
3407 | { | |
3408 | struct breakpoint *b; | |
3409 | struct breakpoint_objfile_data *bp_objfile_data; | |
3410 | struct explicit_location explicit_loc; | |
aa7d318d | 3411 | |
94c93c35 | 3412 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3413 | |
94c93c35 TT |
3414 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3415 | continue; | |
17450429 | 3416 | |
94c93c35 TT |
3417 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3418 | { | |
3419 | struct bound_minimal_symbol m; | |
17450429 | 3420 | |
94c93c35 TT |
3421 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3422 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3423 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3424 | { | |
3425 | /* Prevent future lookups in this objfile. */ | |
3426 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3427 | continue; | |
3428 | } | |
3429 | bp_objfile_data->terminate_msym = m; | |
3430 | } | |
aa7d318d | 3431 | |
94c93c35 TT |
3432 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3433 | b = create_internal_breakpoint (objfile->arch (), addr, | |
3434 | bp_std_terminate_master, | |
3435 | &internal_breakpoint_ops); | |
3436 | initialize_explicit_location (&explicit_loc); | |
3437 | explicit_loc.function_name = ASTRDUP (func_name); | |
3438 | b->location = new_explicit_location (&explicit_loc); | |
3439 | b->enable_state = bp_disabled; | |
3440 | } | |
3441 | } | |
aa7d318d TT |
3442 | } |
3443 | ||
186c406b TT |
3444 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3445 | ||
70221824 | 3446 | static void |
186c406b TT |
3447 | create_exception_master_breakpoint (void) |
3448 | { | |
17450429 | 3449 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b | 3450 | |
2030c079 | 3451 | for (objfile *objfile : current_program_space->objfiles ()) |
186c406b | 3452 | { |
17450429 PP |
3453 | struct breakpoint *b; |
3454 | struct gdbarch *gdbarch; | |
3455 | struct breakpoint_objfile_data *bp_objfile_data; | |
3456 | CORE_ADDR addr; | |
67994074 | 3457 | struct explicit_location explicit_loc; |
17450429 PP |
3458 | |
3459 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3460 | ||
28106bc2 SDJ |
3461 | /* We prefer the SystemTap probe point if it exists. */ |
3462 | if (!bp_objfile_data->exception_searched) | |
3463 | { | |
45461e0d SM |
3464 | std::vector<probe *> ret |
3465 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3466 | |
45461e0d | 3467 | if (!ret.empty ()) |
25f9533e SDJ |
3468 | { |
3469 | /* We are only interested in checking one element. */ | |
45461e0d | 3470 | probe *p = ret[0]; |
25f9533e | 3471 | |
935676c9 | 3472 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3473 | { |
3474 | /* We cannot use the probe interface here, because it does | |
3475 | not know how to evaluate arguments. */ | |
45461e0d | 3476 | ret.clear (); |
25f9533e SDJ |
3477 | } |
3478 | } | |
3479 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3480 | bp_objfile_data->exception_searched = 1; |
3481 | } | |
3482 | ||
45461e0d | 3483 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3484 | { |
08feed99 | 3485 | gdbarch = objfile->arch (); |
45461e0d SM |
3486 | |
3487 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3488 | { |
729662a5 | 3489 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3490 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3491 | bp_exception_master, |
3492 | &internal_breakpoint_ops); | |
d28cd78a | 3493 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3494 | b->enable_state = bp_disabled; |
3495 | } | |
3496 | ||
3497 | continue; | |
3498 | } | |
3499 | ||
3500 | /* Otherwise, try the hook function. */ | |
3501 | ||
3b7344d5 | 3502 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3503 | continue; |
3504 | ||
08feed99 | 3505 | gdbarch = objfile->arch (); |
186c406b | 3506 | |
3b7344d5 | 3507 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3508 | { |
3b7344d5 | 3509 | struct bound_minimal_symbol debug_hook; |
186c406b | 3510 | |
17450429 | 3511 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3512 | if (debug_hook.minsym == NULL) |
17450429 | 3513 | { |
3b7344d5 | 3514 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3515 | continue; |
3516 | } | |
3517 | ||
3518 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3519 | } |
17450429 | 3520 | |
77e371c0 | 3521 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3522 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3523 | current_top_target ()); | |
06edf0c0 PA |
3524 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3525 | &internal_breakpoint_ops); | |
67994074 KS |
3526 | initialize_explicit_location (&explicit_loc); |
3527 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3528 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3529 | b->enable_state = bp_disabled; |
186c406b | 3530 | } |
186c406b TT |
3531 | } |
3532 | ||
9ef9e6a6 KS |
3533 | /* Does B have a location spec? */ |
3534 | ||
3535 | static int | |
3536 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3537 | { | |
d28cd78a | 3538 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3539 | } |
3540 | ||
c906108c | 3541 | void |
fba45db2 | 3542 | update_breakpoints_after_exec (void) |
c906108c | 3543 | { |
35df4500 | 3544 | struct breakpoint *b, *b_tmp; |
876fa593 | 3545 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3546 | |
25b22b0a PA |
3547 | /* We're about to delete breakpoints from GDB's lists. If the |
3548 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3549 | writing the breakpoints' "shadow contents" back into memory. The | |
3550 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3551 | do that. Instead, the target is responsible from marking | |
3552 | breakpoints out as soon as it detects an exec. We don't do that | |
3553 | here instead, because there may be other attempts to delete | |
3554 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3555 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3556 | if (bploc->pspace == current_program_space) |
3557 | gdb_assert (!bploc->inserted); | |
c906108c | 3558 | |
35df4500 | 3559 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3560 | { |
6c95b8df PA |
3561 | if (b->pspace != current_program_space) |
3562 | continue; | |
3563 | ||
4a64f543 | 3564 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3565 | if (b->type == bp_shlib_event) |
3566 | { | |
3567 | delete_breakpoint (b); | |
3568 | continue; | |
3569 | } | |
c906108c | 3570 | |
4a64f543 | 3571 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3572 | if (b->type == bp_jit_event) |
3573 | { | |
3574 | delete_breakpoint (b); | |
3575 | continue; | |
3576 | } | |
3577 | ||
1900040c | 3578 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3579 | as must overlay event and longjmp master breakpoints. */ |
3580 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3581 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3582 | || b->type == bp_exception_master) | |
c4093a6a JM |
3583 | { |
3584 | delete_breakpoint (b); | |
3585 | continue; | |
3586 | } | |
3587 | ||
4a64f543 | 3588 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3589 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3590 | { |
3591 | delete_breakpoint (b); | |
3592 | continue; | |
3593 | } | |
3594 | ||
7c16b83e PA |
3595 | /* Just like single-step breakpoints. */ |
3596 | if (b->type == bp_single_step) | |
3597 | { | |
3598 | delete_breakpoint (b); | |
3599 | continue; | |
3600 | } | |
3601 | ||
611c83ae PA |
3602 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3603 | after an exec. */ | |
186c406b | 3604 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3605 | || b->type == bp_longjmp_call_dummy |
186c406b | 3606 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3607 | { |
3608 | delete_breakpoint (b); | |
3609 | continue; | |
3610 | } | |
3611 | ||
ce78b96d JB |
3612 | if (b->type == bp_catchpoint) |
3613 | { | |
3614 | /* For now, none of the bp_catchpoint breakpoints need to | |
3615 | do anything at this point. In the future, if some of | |
3616 | the catchpoints need to something, we will need to add | |
3617 | a new method, and call this method from here. */ | |
3618 | continue; | |
3619 | } | |
3620 | ||
c5aa993b JM |
3621 | /* bp_finish is a special case. The only way we ought to be able |
3622 | to see one of these when an exec() has happened, is if the user | |
3623 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3624 | carries them to the call-site of the current callee, by setting | |
3625 | a temporary bp there and resuming. But in this case, the finish | |
3626 | will carry them entirely through the vfork & exec. | |
3627 | ||
3628 | We don't want to allow a bp_finish to remain inserted now. But | |
3629 | we can't safely delete it, 'cause finish_command has a handle to | |
3630 | the bp on a bpstat, and will later want to delete it. There's a | |
3631 | chance (and I've seen it happen) that if we delete the bp_finish | |
3632 | here, that its storage will get reused by the time finish_command | |
3633 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3634 | We really must allow finish_command to delete a bp_finish. | |
3635 | ||
e5dd4106 | 3636 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3637 | it's safe to delete something others may have handles to?" |
3638 | problem, what we'll do here is just uninsert the bp_finish, and | |
3639 | let finish_command delete it. | |
3640 | ||
3641 | (We know the bp_finish is "doomed" in the sense that it's | |
3642 | momentary, and will be deleted as soon as finish_command sees | |
3643 | the inferior stopped. So it doesn't matter that the bp's | |
3644 | address is probably bogus in the new a.out, unlike e.g., the | |
3645 | solib breakpoints.) */ | |
c5aa993b | 3646 | |
c5aa993b JM |
3647 | if (b->type == bp_finish) |
3648 | { | |
3649 | continue; | |
3650 | } | |
3651 | ||
3652 | /* Without a symbolic address, we have little hope of the | |
3653 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3654 | a.out. */ |
9ef9e6a6 | 3655 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3656 | { |
3657 | delete_breakpoint (b); | |
3658 | continue; | |
3659 | } | |
c5aa993b | 3660 | } |
c906108c SS |
3661 | } |
3662 | ||
3663 | int | |
d80ee84f | 3664 | detach_breakpoints (ptid_t ptid) |
c906108c | 3665 | { |
35df4500 | 3666 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3667 | int val = 0; |
2989a365 | 3668 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3669 | struct inferior *inf = current_inferior (); |
c5aa993b | 3670 | |
e99b03dc | 3671 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3672 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3673 | |
6c95b8df | 3674 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3675 | inferior_ptid = ptid; |
35df4500 | 3676 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3677 | { |
35df4500 | 3678 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3679 | continue; |
3680 | ||
bd9673a4 PW |
3681 | /* This function must physically remove breakpoints locations |
3682 | from the specified ptid, without modifying the breakpoint | |
3683 | package's state. Locations of type bp_loc_other are only | |
3684 | maintained at GDB side. So, there is no need to remove | |
3685 | these bp_loc_other locations. Moreover, removing these | |
3686 | would modify the breakpoint package's state. */ | |
3687 | if (bl->loc_type == bp_loc_other) | |
3688 | continue; | |
3689 | ||
35df4500 | 3690 | if (bl->inserted) |
b2b6a7da | 3691 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3692 | } |
d03285ec | 3693 | |
3a1bae8e | 3694 | return val; |
c906108c SS |
3695 | } |
3696 | ||
35df4500 | 3697 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3698 | Note that this is used to detach breakpoints from a child fork. |
3699 | When we get here, the child isn't in the inferior list, and neither | |
3700 | do we have objects to represent its address space --- we should | |
35df4500 | 3701 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3702 | |
c906108c | 3703 | static int |
b2b6a7da | 3704 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3705 | { |
3706 | int val; | |
c5aa993b | 3707 | |
35df4500 TJB |
3708 | /* BL is never in moribund_locations by our callers. */ |
3709 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3710 | |
74960c60 VP |
3711 | /* The type of none suggests that owner is actually deleted. |
3712 | This should not ever happen. */ | |
35df4500 | 3713 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3714 | |
35df4500 TJB |
3715 | if (bl->loc_type == bp_loc_software_breakpoint |
3716 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3717 | { |
c02f5703 MS |
3718 | /* "Normal" instruction breakpoint: either the standard |
3719 | trap-instruction bp (bp_breakpoint), or a | |
3720 | bp_hardware_breakpoint. */ | |
3721 | ||
3722 | /* First check to see if we have to handle an overlay. */ | |
3723 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3724 | || bl->section == NULL |
3725 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3726 | { |
3727 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3728 | |
3729 | /* If we're trying to uninsert a memory breakpoint that we | |
3730 | know is set in a dynamic object that is marked | |
3731 | shlib_disabled, then either the dynamic object was | |
3732 | removed with "remove-symbol-file" or with | |
3733 | "nosharedlibrary". In the former case, we don't know | |
3734 | whether another dynamic object might have loaded over the | |
3735 | breakpoint's address -- the user might well let us know | |
3736 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3737 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3738 | list of dynamically loaded objects). If we have the |
3739 | breakpoint's shadow memory, that is, this is a software | |
3740 | breakpoint managed by GDB, check whether the breakpoint | |
3741 | is still inserted in memory, to avoid overwriting wrong | |
3742 | code with stale saved shadow contents. Note that HW | |
3743 | breakpoints don't have shadow memory, as they're | |
3744 | implemented using a mechanism that is not dependent on | |
3745 | being able to modify the target's memory, and as such | |
3746 | they should always be removed. */ | |
3747 | if (bl->shlib_disabled | |
3748 | && bl->target_info.shadow_len != 0 | |
3749 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3750 | val = 0; | |
3751 | else | |
73971819 | 3752 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3753 | } |
c906108c SS |
3754 | else |
3755 | { | |
4a64f543 | 3756 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3757 | Did we set a breakpoint at the LMA? */ |
3758 | if (!overlay_events_enabled) | |
3759 | { | |
3760 | /* Yes -- overlay event support is not active, so we | |
3761 | should have set a breakpoint at the LMA. Remove it. | |
3762 | */ | |
c02f5703 MS |
3763 | /* Ignore any failures: if the LMA is in ROM, we will |
3764 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3765 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3766 | target_remove_hw_breakpoint (bl->gdbarch, | |
3767 | &bl->overlay_target_info); | |
c02f5703 | 3768 | else |
35df4500 | 3769 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3770 | &bl->overlay_target_info, |
3771 | reason); | |
c02f5703 MS |
3772 | } |
3773 | /* Did we set a breakpoint at the VMA? | |
3774 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3775 | if (bl->inserted) |
c906108c | 3776 | { |
c02f5703 MS |
3777 | /* Yes -- remove it. Previously we did not bother to |
3778 | remove the breakpoint if the section had been | |
3779 | unmapped, but let's not rely on that being safe. We | |
3780 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3781 | |
3782 | /* However, we should remove *software* breakpoints only | |
3783 | if the section is still mapped, or else we overwrite | |
3784 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3785 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3786 | || section_is_mapped (bl->section)) | |
73971819 | 3787 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3788 | else |
3789 | val = 0; | |
c906108c | 3790 | } |
c02f5703 MS |
3791 | else |
3792 | { | |
3793 | /* No -- not inserted, so no need to remove. No error. */ | |
3794 | val = 0; | |
3795 | } | |
c906108c | 3796 | } |
879d1e6b | 3797 | |
08351840 PA |
3798 | /* In some cases, we might not be able to remove a breakpoint in |
3799 | a shared library that has already been removed, but we have | |
3800 | not yet processed the shlib unload event. Similarly for an | |
3801 | unloaded add-symbol-file object - the user might not yet have | |
3802 | had the chance to remove-symbol-file it. shlib_disabled will | |
3803 | be set if the library/object has already been removed, but | |
3804 | the breakpoint hasn't been uninserted yet, e.g., after | |
3805 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3806 | always-inserted mode. */ | |
076855f9 | 3807 | if (val |
08351840 PA |
3808 | && (bl->loc_type == bp_loc_software_breakpoint |
3809 | && (bl->shlib_disabled | |
3810 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3811 | || shared_objfile_contains_address_p (bl->pspace, |
3812 | bl->address)))) | |
879d1e6b UW |
3813 | val = 0; |
3814 | ||
c906108c SS |
3815 | if (val) |
3816 | return val; | |
b2b6a7da | 3817 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3818 | } |
35df4500 | 3819 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3820 | { |
77b06cd7 TJB |
3821 | gdb_assert (bl->owner->ops != NULL |
3822 | && bl->owner->ops->remove_location != NULL); | |
3823 | ||
b2b6a7da | 3824 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3825 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3826 | |
c906108c | 3827 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3828 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3829 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3830 | bl->owner->number); |
c906108c | 3831 | } |
35df4500 TJB |
3832 | else if (bl->owner->type == bp_catchpoint |
3833 | && breakpoint_enabled (bl->owner) | |
3834 | && !bl->duplicate) | |
ce78b96d | 3835 | { |
77b06cd7 TJB |
3836 | gdb_assert (bl->owner->ops != NULL |
3837 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3838 | |
73971819 | 3839 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3840 | if (val) |
3841 | return val; | |
77b06cd7 | 3842 | |
b2b6a7da | 3843 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3844 | } |
c906108c SS |
3845 | |
3846 | return 0; | |
3847 | } | |
3848 | ||
6c95b8df | 3849 | static int |
834c0d03 | 3850 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3851 | { |
35df4500 TJB |
3852 | /* BL is never in moribund_locations by our callers. */ |
3853 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3854 | |
6c95b8df PA |
3855 | /* The type of none suggests that owner is actually deleted. |
3856 | This should not ever happen. */ | |
35df4500 | 3857 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3858 | |
5ed8105e | 3859 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3860 | |
35df4500 | 3861 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3862 | |
5ed8105e | 3863 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3864 | } |
3865 | ||
c906108c SS |
3866 | /* Clear the "inserted" flag in all breakpoints. */ |
3867 | ||
25b22b0a | 3868 | void |
fba45db2 | 3869 | mark_breakpoints_out (void) |
c906108c | 3870 | { |
35df4500 | 3871 | struct bp_location *bl, **blp_tmp; |
c906108c | 3872 | |
35df4500 | 3873 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3874 | if (bl->pspace == current_program_space) |
35df4500 | 3875 | bl->inserted = 0; |
c906108c SS |
3876 | } |
3877 | ||
53a5351d JM |
3878 | /* Clear the "inserted" flag in all breakpoints and delete any |
3879 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3880 | |
3881 | Plus other such housekeeping that has to be done for breakpoints | |
3882 | between runs. | |
3883 | ||
53a5351d JM |
3884 | Note: this function gets called at the end of a run (by |
3885 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3886 | init_wait_for_inferior). */ |
c906108c SS |
3887 | |
3888 | ||
3889 | ||
3890 | void | |
fba45db2 | 3891 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3892 | { |
35df4500 | 3893 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3894 | struct program_space *pspace = current_program_space; |
c906108c | 3895 | |
50c71eaf PA |
3896 | /* If breakpoint locations are shared across processes, then there's |
3897 | nothing to do. */ | |
f5656ead | 3898 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3899 | return; |
3900 | ||
1a853c52 | 3901 | mark_breakpoints_out (); |
075f6582 | 3902 | |
35df4500 | 3903 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3904 | { |
6c95b8df PA |
3905 | if (b->loc && b->loc->pspace != pspace) |
3906 | continue; | |
3907 | ||
c5aa993b JM |
3908 | switch (b->type) |
3909 | { | |
3910 | case bp_call_dummy: | |
e2e4d78b | 3911 | case bp_longjmp_call_dummy: |
c906108c | 3912 | |
c5aa993b | 3913 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3914 | cause problems when the inferior is rerun, so we better get |
3915 | rid of it. */ | |
3916 | ||
3917 | case bp_watchpoint_scope: | |
3918 | ||
3919 | /* Also get rid of scope breakpoints. */ | |
3920 | ||
3921 | case bp_shlib_event: | |
3922 | ||
3923 | /* Also remove solib event breakpoints. Their addresses may | |
3924 | have changed since the last time we ran the program. | |
3925 | Actually we may now be debugging against different target; | |
3926 | and so the solib backend that installed this breakpoint may | |
3927 | not be used in by the target. E.g., | |
3928 | ||
3929 | (gdb) file prog-linux | |
3930 | (gdb) run # native linux target | |
3931 | ... | |
3932 | (gdb) kill | |
3933 | (gdb) file prog-win.exe | |
3934 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3935 | */ | |
c906108c | 3936 | |
f59f708a PA |
3937 | case bp_step_resume: |
3938 | ||
3939 | /* Also remove step-resume breakpoints. */ | |
3940 | ||
7c16b83e PA |
3941 | case bp_single_step: |
3942 | ||
3943 | /* Also remove single-step breakpoints. */ | |
3944 | ||
c5aa993b JM |
3945 | delete_breakpoint (b); |
3946 | break; | |
c906108c | 3947 | |
c5aa993b JM |
3948 | case bp_watchpoint: |
3949 | case bp_hardware_watchpoint: | |
3950 | case bp_read_watchpoint: | |
3951 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3952 | { |
3953 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3954 | |
3a5c3e22 PA |
3955 | /* Likewise for watchpoints on local expressions. */ |
3956 | if (w->exp_valid_block != NULL) | |
3957 | delete_breakpoint (b); | |
63000888 | 3958 | else |
3a5c3e22 | 3959 | { |
63000888 PA |
3960 | /* Get rid of existing locations, which are no longer |
3961 | valid. New ones will be created in | |
3962 | update_watchpoint, when the inferior is restarted. | |
3963 | The next update_global_location_list call will | |
3964 | garbage collect them. */ | |
3965 | b->loc = NULL; | |
3966 | ||
3967 | if (context == inf_starting) | |
3968 | { | |
3969 | /* Reset val field to force reread of starting value in | |
3970 | insert_breakpoints. */ | |
850645cf | 3971 | w->val.reset (nullptr); |
4c1d86d9 | 3972 | w->val_valid = false; |
63000888 PA |
3973 | } |
3974 | } | |
3a5c3e22 | 3975 | } |
c5aa993b JM |
3976 | break; |
3977 | default: | |
c5aa993b JM |
3978 | break; |
3979 | } | |
3980 | } | |
1c5cfe86 PA |
3981 | |
3982 | /* Get rid of the moribund locations. */ | |
1123588c | 3983 | for (bp_location *bl : moribund_locations) |
35df4500 | 3984 | decref_bp_location (&bl); |
1123588c | 3985 | moribund_locations.clear (); |
c906108c SS |
3986 | } |
3987 | ||
6c95b8df PA |
3988 | /* These functions concern about actual breakpoints inserted in the |
3989 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3990 | we need to hop over the bkpt --- so we check for address space | |
3991 | match, not program space. */ | |
3992 | ||
c2c6d25f JM |
3993 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3994 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3995 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3996 | permanent breakpoint. | |
3997 | - When continuing from a location with an ordinary breakpoint, we | |
3998 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3999 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4000 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4001 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4002 | |
c2c6d25f | 4003 | enum breakpoint_here |
accd0bcd | 4004 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4005 | { |
35df4500 | 4006 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4007 | int any_breakpoint_here = 0; |
c906108c | 4008 | |
35df4500 | 4009 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4010 | { |
35df4500 TJB |
4011 | if (bl->loc_type != bp_loc_software_breakpoint |
4012 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4013 | continue; |
4014 | ||
f1310107 | 4015 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4016 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4017 | || bl->permanent) |
f1310107 | 4018 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4019 | { |
4020 | if (overlay_debugging | |
35df4500 TJB |
4021 | && section_is_overlay (bl->section) |
4022 | && !section_is_mapped (bl->section)) | |
075f6582 | 4023 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4024 | else if (bl->permanent) |
075f6582 DJ |
4025 | return permanent_breakpoint_here; |
4026 | else | |
4027 | any_breakpoint_here = 1; | |
4028 | } | |
4029 | } | |
c906108c | 4030 | |
f486487f | 4031 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4032 | } |
4033 | ||
d35ae833 PA |
4034 | /* See breakpoint.h. */ |
4035 | ||
4036 | int | |
accd0bcd | 4037 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4038 | CORE_ADDR addr, ULONGEST len) |
4039 | { | |
4040 | struct bp_location *bl, **blp_tmp; | |
4041 | ||
4042 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4043 | { | |
4044 | if (bl->loc_type != bp_loc_software_breakpoint | |
4045 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4046 | continue; | |
4047 | ||
4048 | if ((breakpoint_enabled (bl->owner) | |
4049 | || bl->permanent) | |
4050 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4051 | addr, len)) | |
4052 | { | |
4053 | if (overlay_debugging | |
4054 | && section_is_overlay (bl->section) | |
4055 | && !section_is_mapped (bl->section)) | |
4056 | { | |
4057 | /* Unmapped overlay -- can't be a match. */ | |
4058 | continue; | |
4059 | } | |
4060 | ||
4061 | return 1; | |
4062 | } | |
4063 | } | |
4064 | ||
4065 | return 0; | |
4066 | } | |
4067 | ||
1c5cfe86 PA |
4068 | /* Return true if there's a moribund breakpoint at PC. */ |
4069 | ||
4070 | int | |
accd0bcd | 4071 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4072 | { |
1123588c | 4073 | for (bp_location *loc : moribund_locations) |
f1310107 | 4074 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4075 | return 1; |
4076 | ||
4077 | return 0; | |
4078 | } | |
c2c6d25f | 4079 | |
f7ce857f PA |
4080 | /* Returns non-zero iff BL is inserted at PC, in address space |
4081 | ASPACE. */ | |
4082 | ||
4083 | static int | |
4084 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4085 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4086 | { |
4087 | if (bl->inserted | |
4088 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4089 | aspace, pc)) | |
4090 | { | |
4091 | if (overlay_debugging | |
4092 | && section_is_overlay (bl->section) | |
4093 | && !section_is_mapped (bl->section)) | |
4094 | return 0; /* unmapped overlay -- can't be a match */ | |
4095 | else | |
4096 | return 1; | |
4097 | } | |
4098 | return 0; | |
4099 | } | |
4100 | ||
a1fd2fa5 | 4101 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4102 | |
4103 | int | |
accd0bcd | 4104 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4105 | { |
f7ce857f | 4106 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4107 | |
f7ce857f | 4108 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4109 | { |
f7ce857f PA |
4110 | struct bp_location *bl = *blp; |
4111 | ||
35df4500 TJB |
4112 | if (bl->loc_type != bp_loc_software_breakpoint |
4113 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4114 | continue; |
4115 | ||
f7ce857f PA |
4116 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4117 | return 1; | |
c5aa993b | 4118 | } |
c36b740a VP |
4119 | return 0; |
4120 | } | |
4121 | ||
a1fd2fa5 PA |
4122 | /* This function returns non-zero iff there is a software breakpoint |
4123 | inserted at PC. */ | |
c36b740a VP |
4124 | |
4125 | int | |
accd0bcd | 4126 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4127 | CORE_ADDR pc) |
4fa8626c | 4128 | { |
f7ce857f | 4129 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4130 | |
f7ce857f | 4131 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4132 | { |
f7ce857f PA |
4133 | struct bp_location *bl = *blp; |
4134 | ||
35df4500 | 4135 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4136 | continue; |
4137 | ||
f7ce857f PA |
4138 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4139 | return 1; | |
4fa8626c DJ |
4140 | } |
4141 | ||
4142 | return 0; | |
9c02b525 PA |
4143 | } |
4144 | ||
4145 | /* See breakpoint.h. */ | |
4146 | ||
4147 | int | |
accd0bcd | 4148 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4149 | CORE_ADDR pc) |
4150 | { | |
4151 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4152 | |
4153 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4154 | { | |
4155 | struct bp_location *bl = *blp; | |
4156 | ||
4157 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4158 | continue; | |
4159 | ||
4160 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4161 | return 1; | |
4162 | } | |
4163 | ||
4164 | return 0; | |
4fa8626c DJ |
4165 | } |
4166 | ||
9093389c | 4167 | int |
accd0bcd | 4168 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4169 | CORE_ADDR addr, ULONGEST len) |
4170 | { | |
4171 | struct breakpoint *bpt; | |
4172 | ||
4173 | ALL_BREAKPOINTS (bpt) | |
4174 | { | |
4175 | struct bp_location *loc; | |
4176 | ||
4177 | if (bpt->type != bp_hardware_watchpoint | |
4178 | && bpt->type != bp_access_watchpoint) | |
4179 | continue; | |
4180 | ||
4181 | if (!breakpoint_enabled (bpt)) | |
4182 | continue; | |
4183 | ||
4184 | for (loc = bpt->loc; loc; loc = loc->next) | |
4185 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4186 | { | |
4187 | CORE_ADDR l, h; | |
4188 | ||
4189 | /* Check for intersection. */ | |
768adc05 PA |
4190 | l = std::max<CORE_ADDR> (loc->address, addr); |
4191 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4192 | if (l < h) |
4193 | return 1; | |
4194 | } | |
4195 | } | |
4196 | return 0; | |
4197 | } | |
c5aa993b | 4198 | |
f2478a7e | 4199 | /* See breakpoint.h. */ |
c906108c | 4200 | |
f2478a7e SM |
4201 | bool |
4202 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4203 | { |
f2478a7e | 4204 | return (b->type == bp_catchpoint); |
c906108c SS |
4205 | } |
4206 | ||
f431efe5 PA |
4207 | /* Frees any storage that is part of a bpstat. Does not walk the |
4208 | 'next' chain. */ | |
4209 | ||
04afa70c | 4210 | bpstats::~bpstats () |
198757a8 | 4211 | { |
04afa70c TT |
4212 | if (bp_location_at != NULL) |
4213 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4214 | } |
4215 | ||
c906108c SS |
4216 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4217 | Also free any storage that is part of a bpstat. */ | |
4218 | ||
4219 | void | |
fba45db2 | 4220 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4221 | { |
4222 | bpstat p; | |
4223 | bpstat q; | |
4224 | ||
4225 | if (bsp == 0) | |
4226 | return; | |
4227 | p = *bsp; | |
4228 | while (p != NULL) | |
4229 | { | |
4230 | q = p->next; | |
04afa70c | 4231 | delete p; |
c906108c SS |
4232 | p = q; |
4233 | } | |
4234 | *bsp = NULL; | |
4235 | } | |
4236 | ||
04afa70c TT |
4237 | bpstats::bpstats (const bpstats &other) |
4238 | : next (NULL), | |
4239 | bp_location_at (other.bp_location_at), | |
4240 | breakpoint_at (other.breakpoint_at), | |
4241 | commands (other.commands), | |
04afa70c TT |
4242 | print (other.print), |
4243 | stop (other.stop), | |
4244 | print_it (other.print_it) | |
4245 | { | |
850645cf TT |
4246 | if (other.old_val != NULL) |
4247 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4248 | incref_bp_location (bp_location_at); |
04afa70c TT |
4249 | } |
4250 | ||
c906108c SS |
4251 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4252 | is part of the bpstat is copied as well. */ | |
4253 | ||
4254 | bpstat | |
fba45db2 | 4255 | bpstat_copy (bpstat bs) |
c906108c SS |
4256 | { |
4257 | bpstat p = NULL; | |
4258 | bpstat tmp; | |
4259 | bpstat retval = NULL; | |
4260 | ||
4261 | if (bs == NULL) | |
4262 | return bs; | |
4263 | ||
4264 | for (; bs != NULL; bs = bs->next) | |
4265 | { | |
04afa70c | 4266 | tmp = new bpstats (*bs); |
31cc81e9 | 4267 | |
c906108c SS |
4268 | if (p == NULL) |
4269 | /* This is the first thing in the chain. */ | |
4270 | retval = tmp; | |
4271 | else | |
4272 | p->next = tmp; | |
4273 | p = tmp; | |
4274 | } | |
4275 | p->next = NULL; | |
4276 | return retval; | |
4277 | } | |
4278 | ||
4a64f543 | 4279 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4280 | |
4281 | bpstat | |
fba45db2 | 4282 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4283 | { |
c5aa993b JM |
4284 | if (bsp == NULL) |
4285 | return NULL; | |
c906108c | 4286 | |
c5aa993b JM |
4287 | for (; bsp != NULL; bsp = bsp->next) |
4288 | { | |
f431efe5 | 4289 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4290 | return bsp; |
4291 | } | |
c906108c SS |
4292 | return NULL; |
4293 | } | |
4294 | ||
ab04a2af TT |
4295 | /* See breakpoint.h. */ |
4296 | ||
4c462cb0 | 4297 | bool |
427cd150 | 4298 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4299 | { |
ab04a2af TT |
4300 | for (; bsp != NULL; bsp = bsp->next) |
4301 | { | |
427cd150 TT |
4302 | if (bsp->breakpoint_at == NULL) |
4303 | { | |
4304 | /* A moribund location can never explain a signal other than | |
4305 | GDB_SIGNAL_TRAP. */ | |
4306 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4307 | return true; |
427cd150 TT |
4308 | } |
4309 | else | |
47591c29 PA |
4310 | { |
4311 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4312 | sig)) | |
4c462cb0 | 4313 | return true; |
47591c29 | 4314 | } |
ab04a2af TT |
4315 | } |
4316 | ||
4c462cb0 | 4317 | return false; |
ab04a2af TT |
4318 | } |
4319 | ||
4a64f543 MS |
4320 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4321 | stopped at. *BSP upon return is a bpstat which points to the | |
4322 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4323 | good for anything but further calls to bpstat_num). | |
4324 | ||
8671a17b PA |
4325 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4326 | Return -1 if stopped at a breakpoint that has been deleted since | |
4327 | we set it. | |
4328 | Return 1 otherwise. */ | |
c906108c SS |
4329 | |
4330 | int | |
8671a17b | 4331 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4332 | { |
4333 | struct breakpoint *b; | |
4334 | ||
4335 | if ((*bsp) == NULL) | |
4336 | return 0; /* No more breakpoint values */ | |
8671a17b | 4337 | |
4a64f543 MS |
4338 | /* We assume we'll never have several bpstats that correspond to a |
4339 | single breakpoint -- otherwise, this function might return the | |
4340 | same number more than once and this will look ugly. */ | |
f431efe5 | 4341 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4342 | *bsp = (*bsp)->next; |
4343 | if (b == NULL) | |
4344 | return -1; /* breakpoint that's been deleted since */ | |
4345 | ||
4346 | *num = b->number; /* We have its number */ | |
4347 | return 1; | |
c906108c SS |
4348 | } |
4349 | ||
e93ca019 | 4350 | /* See breakpoint.h. */ |
c906108c SS |
4351 | |
4352 | void | |
e93ca019 | 4353 | bpstat_clear_actions (void) |
c906108c | 4354 | { |
e93ca019 JK |
4355 | bpstat bs; |
4356 | ||
00431a78 | 4357 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4358 | return; |
4359 | ||
00431a78 | 4360 | thread_info *tp = inferior_thread (); |
e93ca019 | 4361 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4362 | { |
d1b0a7bf | 4363 | bs->commands = NULL; |
850645cf | 4364 | bs->old_val.reset (nullptr); |
c906108c SS |
4365 | } |
4366 | } | |
4367 | ||
f3b1572e PA |
4368 | /* Called when a command is about to proceed the inferior. */ |
4369 | ||
4370 | static void | |
4371 | breakpoint_about_to_proceed (void) | |
4372 | { | |
d7e15655 | 4373 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4374 | { |
4375 | struct thread_info *tp = inferior_thread (); | |
4376 | ||
4377 | /* Allow inferior function calls in breakpoint commands to not | |
4378 | interrupt the command list. When the call finishes | |
4379 | successfully, the inferior will be standing at the same | |
4380 | breakpoint as if nothing happened. */ | |
16c381f0 | 4381 | if (tp->control.in_infcall) |
f3b1572e PA |
4382 | return; |
4383 | } | |
4384 | ||
4385 | breakpoint_proceeded = 1; | |
4386 | } | |
4387 | ||
abf85f46 JK |
4388 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4389 | or its equivalent. */ | |
4390 | ||
4391 | static int | |
4392 | command_line_is_silent (struct command_line *cmd) | |
4393 | { | |
4f45d445 | 4394 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4395 | } |
4396 | ||
4a64f543 MS |
4397 | /* Execute all the commands associated with all the breakpoints at |
4398 | this location. Any of these commands could cause the process to | |
4399 | proceed beyond this point, etc. We look out for such changes by | |
4400 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4401 | |
347bddb7 PA |
4402 | Returns true if a breakpoint command resumed the inferior. In that |
4403 | case, it is the caller's responsibility to recall it again with the | |
4404 | bpstat of the current thread. */ | |
4405 | ||
4406 | static int | |
4407 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4408 | { |
4409 | bpstat bs; | |
347bddb7 | 4410 | int again = 0; |
c906108c SS |
4411 | |
4412 | /* Avoid endless recursion if a `source' command is contained | |
4413 | in bs->commands. */ | |
4414 | if (executing_breakpoint_commands) | |
347bddb7 | 4415 | return 0; |
c906108c | 4416 | |
81b1e71c TT |
4417 | scoped_restore save_executing |
4418 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4419 | |
1ac32117 | 4420 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4421 | |
4a64f543 | 4422 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4423 | bs = *bsp; |
4424 | ||
4425 | breakpoint_proceeded = 0; | |
4426 | for (; bs != NULL; bs = bs->next) | |
4427 | { | |
d1b0a7bf | 4428 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4429 | |
4430 | /* Take ownership of the BSP's command tree, if it has one. | |
4431 | ||
4432 | The command tree could legitimately contain commands like | |
4433 | 'step' and 'next', which call clear_proceed_status, which | |
4434 | frees stop_bpstat's command tree. To make sure this doesn't | |
4435 | free the tree we're executing out from under us, we need to | |
4436 | take ownership of the tree ourselves. Since a given bpstat's | |
4437 | commands are only executed once, we don't need to copy it; we | |
4438 | can clear the pointer in the bpstat, and make sure we free | |
4439 | the tree when we're done. */ | |
d1b0a7bf | 4440 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4441 | bs->commands = NULL; |
d1b0a7bf TT |
4442 | if (ccmd != NULL) |
4443 | cmd = ccmd.get (); | |
abf85f46 JK |
4444 | if (command_line_is_silent (cmd)) |
4445 | { | |
4446 | /* The action has been already done by bpstat_stop_status. */ | |
4447 | cmd = cmd->next; | |
4448 | } | |
6c50ab1c | 4449 | |
c906108c SS |
4450 | while (cmd != NULL) |
4451 | { | |
4452 | execute_control_command (cmd); | |
4453 | ||
4454 | if (breakpoint_proceeded) | |
4455 | break; | |
4456 | else | |
4457 | cmd = cmd->next; | |
4458 | } | |
6c50ab1c | 4459 | |
c906108c | 4460 | if (breakpoint_proceeded) |
32c1e744 | 4461 | { |
cb814510 | 4462 | if (current_ui->async) |
347bddb7 PA |
4463 | /* If we are in async mode, then the target might be still |
4464 | running, not stopped at any breakpoint, so nothing for | |
4465 | us to do here -- just return to the event loop. */ | |
4466 | ; | |
32c1e744 VP |
4467 | else |
4468 | /* In sync mode, when execute_control_command returns | |
4469 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4470 | Breakpoint commands for that stop were not run, since |
4471 | execute_command does not run breakpoint commands -- | |
4472 | only command_line_handler does, but that one is not | |
4473 | involved in execution of breakpoint commands. So, we | |
4474 | can now execute breakpoint commands. It should be | |
4475 | noted that making execute_command do bpstat actions is | |
4476 | not an option -- in this case we'll have recursive | |
4477 | invocation of bpstat for each breakpoint with a | |
4478 | command, and can easily blow up GDB stack. Instead, we | |
4479 | return true, which will trigger the caller to recall us | |
4480 | with the new stop_bpstat. */ | |
4481 | again = 1; | |
4482 | break; | |
32c1e744 | 4483 | } |
c906108c | 4484 | } |
347bddb7 PA |
4485 | return again; |
4486 | } | |
4487 | ||
00431a78 PA |
4488 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4489 | one, is alive and has execution. Return NULL otherwise. */ | |
4490 | ||
4491 | static thread_info * | |
4492 | get_bpstat_thread () | |
4493 | { | |
55f6301a | 4494 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4495 | return NULL; |
4496 | ||
4497 | thread_info *tp = inferior_thread (); | |
4498 | if (tp->state == THREAD_EXITED || tp->executing) | |
4499 | return NULL; | |
4500 | return tp; | |
4501 | } | |
4502 | ||
347bddb7 PA |
4503 | void |
4504 | bpstat_do_actions (void) | |
4505 | { | |
694c6bf5 | 4506 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4507 | thread_info *tp; |
353d1d73 | 4508 | |
347bddb7 | 4509 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4510 | while ((tp = get_bpstat_thread ()) != NULL) |
4511 | { | |
4512 | /* Since in sync mode, bpstat_do_actions may resume the | |
4513 | inferior, and only return when it is stopped at the next | |
4514 | breakpoint, we keep doing breakpoint actions until it returns | |
4515 | false to indicate the inferior was not resumed. */ | |
4516 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4517 | break; | |
4518 | } | |
353d1d73 | 4519 | |
694c6bf5 | 4520 | cleanup_if_error.release (); |
c906108c SS |
4521 | } |
4522 | ||
fa4727a6 DJ |
4523 | /* Print out the (old or new) value associated with a watchpoint. */ |
4524 | ||
4525 | static void | |
4526 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4527 | { | |
4528 | if (val == NULL) | |
7f6aba03 | 4529 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4530 | else |
79a45b7d TT |
4531 | { |
4532 | struct value_print_options opts; | |
4533 | get_user_print_options (&opts); | |
4534 | value_print (val, stream, &opts); | |
4535 | } | |
fa4727a6 DJ |
4536 | } |
4537 | ||
f303dbd6 PA |
4538 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4539 | debugging multiple threads. */ | |
4540 | ||
4541 | void | |
4542 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4543 | { | |
112e8700 | 4544 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4545 | return; |
4546 | ||
112e8700 | 4547 | uiout->text ("\n"); |
f303dbd6 PA |
4548 | |
4549 | if (show_thread_that_caused_stop ()) | |
4550 | { | |
4551 | const char *name; | |
4552 | struct thread_info *thr = inferior_thread (); | |
4553 | ||
112e8700 | 4554 | uiout->text ("Thread "); |
33eca680 | 4555 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 PA |
4556 | |
4557 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4558 | if (name != NULL) | |
4559 | { | |
112e8700 | 4560 | uiout->text (" \""); |
33eca680 | 4561 | uiout->field_string ("name", name); |
112e8700 | 4562 | uiout->text ("\""); |
f303dbd6 PA |
4563 | } |
4564 | ||
112e8700 | 4565 | uiout->text (" hit "); |
f303dbd6 PA |
4566 | } |
4567 | } | |
4568 | ||
e514a9d6 | 4569 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4570 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4571 | 'print_it' in the bpstat structure. Under some circumstances we |
4572 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4573 | normal_stop(). */ |
e514a9d6 JM |
4574 | |
4575 | static enum print_stop_action | |
4576 | print_bp_stop_message (bpstat bs) | |
4577 | { | |
4578 | switch (bs->print_it) | |
4579 | { | |
4580 | case print_it_noop: | |
4a64f543 | 4581 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4582 | return PRINT_UNKNOWN; |
4583 | break; | |
4584 | ||
4585 | case print_it_done: | |
4586 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4587 | relevant messages. */ |
e514a9d6 JM |
4588 | return PRINT_SRC_AND_LOC; |
4589 | break; | |
4590 | ||
4591 | case print_it_normal: | |
4f8d1dc6 | 4592 | { |
f431efe5 PA |
4593 | struct breakpoint *b = bs->breakpoint_at; |
4594 | ||
1a6a67de TJB |
4595 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4596 | which has since been deleted. */ | |
4597 | if (b == NULL) | |
4598 | return PRINT_UNKNOWN; | |
4599 | ||
348d480f PA |
4600 | /* Normal case. Call the breakpoint's print_it method. */ |
4601 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4602 | } |
348d480f | 4603 | break; |
3086aeae | 4604 | |
e514a9d6 | 4605 | default: |
8e65ff28 | 4606 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4607 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4608 | break; |
c906108c | 4609 | } |
c906108c SS |
4610 | } |
4611 | ||
edcc5120 TT |
4612 | /* A helper function that prints a shared library stopped event. */ |
4613 | ||
4614 | static void | |
4615 | print_solib_event (int is_catchpoint) | |
4616 | { | |
6fb16ce6 | 4617 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4618 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4619 | |
4620 | if (!is_catchpoint) | |
4621 | { | |
4622 | if (any_added || any_deleted) | |
112e8700 | 4623 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4624 | else |
112e8700 SM |
4625 | current_uiout->text (_("Stopped due to shared library event (no " |
4626 | "libraries added or removed)\n")); | |
edcc5120 TT |
4627 | } |
4628 | ||
112e8700 SM |
4629 | if (current_uiout->is_mi_like_p ()) |
4630 | current_uiout->field_string ("reason", | |
4631 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4632 | |
4633 | if (any_deleted) | |
4634 | { | |
112e8700 | 4635 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4636 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4637 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4638 | { |
6fb16ce6 SM |
4639 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4640 | ||
edcc5120 | 4641 | if (ix > 0) |
112e8700 SM |
4642 | current_uiout->text (" "); |
4643 | current_uiout->field_string ("library", name); | |
4644 | current_uiout->text ("\n"); | |
edcc5120 | 4645 | } |
edcc5120 TT |
4646 | } |
4647 | ||
4648 | if (any_added) | |
4649 | { | |
112e8700 | 4650 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4651 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4652 | bool first = true; |
52941706 | 4653 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4654 | { |
bcb430e4 | 4655 | if (!first) |
112e8700 | 4656 | current_uiout->text (" "); |
bcb430e4 | 4657 | first = false; |
112e8700 SM |
4658 | current_uiout->field_string ("library", iter->so_name); |
4659 | current_uiout->text ("\n"); | |
edcc5120 | 4660 | } |
edcc5120 TT |
4661 | } |
4662 | } | |
4663 | ||
e514a9d6 JM |
4664 | /* Print a message indicating what happened. This is called from |
4665 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4666 | list - a list of the eventpoints that caused this stop. KIND is |
4667 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4668 | routine calls the generic print routine for printing a message |
4669 | about reasons for stopping. This will print (for example) the | |
4670 | "Breakpoint n," part of the output. The return value of this | |
4671 | routine is one of: | |
c906108c | 4672 | |
4a64f543 | 4673 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4674 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4675 | code to print the location. An example is |
c5aa993b JM |
4676 | "Breakpoint 1, " which should be followed by |
4677 | the location. | |
917317f4 | 4678 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4679 | to also print the location part of the message. |
4680 | An example is the catch/throw messages, which | |
4a64f543 | 4681 | don't require a location appended to the end. |
917317f4 | 4682 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4683 | further info to be printed. */ |
c906108c | 4684 | |
917317f4 | 4685 | enum print_stop_action |
36dfb11c | 4686 | bpstat_print (bpstat bs, int kind) |
c906108c | 4687 | { |
f486487f | 4688 | enum print_stop_action val; |
c5aa993b | 4689 | |
c906108c | 4690 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4691 | (Currently all watchpoints go on the bpstat whether hit or not. |
4692 | That probably could (should) be changed, provided care is taken | |
c906108c | 4693 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4694 | for (; bs; bs = bs->next) |
4695 | { | |
4696 | val = print_bp_stop_message (bs); | |
4697 | if (val == PRINT_SRC_ONLY | |
4698 | || val == PRINT_SRC_AND_LOC | |
4699 | || val == PRINT_NOTHING) | |
4700 | return val; | |
4701 | } | |
c906108c | 4702 | |
36dfb11c TT |
4703 | /* If we had hit a shared library event breakpoint, |
4704 | print_bp_stop_message would print out this message. If we hit an | |
4705 | OS-level shared library event, do the same thing. */ | |
4706 | if (kind == TARGET_WAITKIND_LOADED) | |
4707 | { | |
edcc5120 | 4708 | print_solib_event (0); |
36dfb11c TT |
4709 | return PRINT_NOTHING; |
4710 | } | |
4711 | ||
e514a9d6 | 4712 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4713 | with and nothing was printed. */ |
917317f4 | 4714 | return PRINT_UNKNOWN; |
c906108c SS |
4715 | } |
4716 | ||
bf469271 | 4717 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4718 | |
bf469271 PA |
4719 | static bool |
4720 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4721 | { |
278cd55f | 4722 | struct value *mark = value_mark (); |
bf469271 | 4723 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4724 | |
c906108c | 4725 | value_free_to_mark (mark); |
bf469271 | 4726 | return res; |
c906108c SS |
4727 | } |
4728 | ||
5760d0ab | 4729 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4730 | |
04afa70c TT |
4731 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4732 | : next (NULL), | |
4733 | bp_location_at (bl), | |
4734 | breakpoint_at (bl->owner), | |
4735 | commands (NULL), | |
04afa70c TT |
4736 | print (0), |
4737 | stop (0), | |
4738 | print_it (print_it_normal) | |
c906108c | 4739 | { |
f431efe5 | 4740 | incref_bp_location (bl); |
04afa70c TT |
4741 | **bs_link_pointer = this; |
4742 | *bs_link_pointer = &next; | |
4743 | } | |
4744 | ||
4745 | bpstats::bpstats () | |
4746 | : next (NULL), | |
4747 | bp_location_at (NULL), | |
4748 | breakpoint_at (NULL), | |
4749 | commands (NULL), | |
04afa70c TT |
4750 | print (0), |
4751 | stop (0), | |
4752 | print_it (print_it_normal) | |
4753 | { | |
c906108c SS |
4754 | } |
4755 | \f | |
d983da9c DJ |
4756 | /* The target has stopped with waitstatus WS. Check if any hardware |
4757 | watchpoints have triggered, according to the target. */ | |
4758 | ||
4759 | int | |
4760 | watchpoints_triggered (struct target_waitstatus *ws) | |
4761 | { | |
57810aa7 | 4762 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4763 | CORE_ADDR addr; |
4764 | struct breakpoint *b; | |
4765 | ||
4766 | if (!stopped_by_watchpoint) | |
4767 | { | |
4768 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4769 | as not triggered. */ | |
4770 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4771 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4772 | { |
4773 | struct watchpoint *w = (struct watchpoint *) b; | |
4774 | ||
4775 | w->watchpoint_triggered = watch_triggered_no; | |
4776 | } | |
d983da9c DJ |
4777 | |
4778 | return 0; | |
4779 | } | |
4780 | ||
8b88a78e | 4781 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4782 | { |
4783 | /* We were stopped by a watchpoint, but we don't know where. | |
4784 | Mark all watchpoints as unknown. */ | |
4785 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4786 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4787 | { |
4788 | struct watchpoint *w = (struct watchpoint *) b; | |
4789 | ||
4790 | w->watchpoint_triggered = watch_triggered_unknown; | |
4791 | } | |
d983da9c | 4792 | |
3c4797ba | 4793 | return 1; |
d983da9c DJ |
4794 | } |
4795 | ||
4796 | /* The target could report the data address. Mark watchpoints | |
4797 | affected by this data address as triggered, and all others as not | |
4798 | triggered. */ | |
4799 | ||
4800 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4801 | if (is_hardware_watchpoint (b)) |
d983da9c | 4802 | { |
3a5c3e22 | 4803 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4804 | struct bp_location *loc; |
d983da9c | 4805 | |
3a5c3e22 | 4806 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4807 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4808 | { |
3a5c3e22 | 4809 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4810 | { |
3a5c3e22 PA |
4811 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4812 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4813 | |
4814 | if (newaddr == start) | |
4815 | { | |
3a5c3e22 | 4816 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4817 | break; |
4818 | } | |
4819 | } | |
4820 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4821 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4822 | addr, loc->address, |
4823 | loc->length)) | |
4824 | { | |
3a5c3e22 | 4825 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4826 | break; |
4827 | } | |
4828 | } | |
d983da9c DJ |
4829 | } |
4830 | ||
4831 | return 1; | |
4832 | } | |
4833 | ||
bf469271 PA |
4834 | /* Possible return values for watchpoint_check. */ |
4835 | enum wp_check_result | |
4836 | { | |
4837 | /* The watchpoint has been deleted. */ | |
4838 | WP_DELETED = 1, | |
4839 | ||
4840 | /* The value has changed. */ | |
4841 | WP_VALUE_CHANGED = 2, | |
4842 | ||
4843 | /* The value has not changed. */ | |
4844 | WP_VALUE_NOT_CHANGED = 3, | |
4845 | ||
4846 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4847 | WP_IGNORE = 4, | |
4848 | }; | |
c906108c SS |
4849 | |
4850 | #define BP_TEMPFLAG 1 | |
4851 | #define BP_HARDWAREFLAG 2 | |
4852 | ||
4a64f543 | 4853 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4854 | changed. */ |
553e4c11 | 4855 | |
bf469271 PA |
4856 | static wp_check_result |
4857 | watchpoint_check (bpstat bs) | |
c906108c | 4858 | { |
3a5c3e22 | 4859 | struct watchpoint *b; |
c906108c SS |
4860 | struct frame_info *fr; |
4861 | int within_current_scope; | |
4862 | ||
f431efe5 | 4863 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4864 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4865 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4866 | |
f6bc2008 PA |
4867 | /* If this is a local watchpoint, we only want to check if the |
4868 | watchpoint frame is in scope if the current thread is the thread | |
4869 | that was used to create the watchpoint. */ | |
4870 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4871 | return WP_IGNORE; |
f6bc2008 | 4872 | |
c906108c SS |
4873 | if (b->exp_valid_block == NULL) |
4874 | within_current_scope = 1; | |
4875 | else | |
4876 | { | |
edb3359d DJ |
4877 | struct frame_info *frame = get_current_frame (); |
4878 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4879 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4880 | ||
c9cf6e20 | 4881 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4882 | still in the function but the stack frame has already been |
4883 | invalidated. Since we can't rely on the values of local | |
4884 | variables after the stack has been destroyed, we are treating | |
4885 | the watchpoint in that state as `not changed' without further | |
4886 | checking. Don't mark watchpoints as changed if the current | |
4887 | frame is in an epilogue - even if they are in some other | |
4888 | frame, our view of the stack is likely to be wrong and | |
4889 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4890 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4891 | return WP_IGNORE; |
a0f49112 | 4892 | |
101dcfbe | 4893 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4894 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4895 | |
4896 | /* If we've gotten confused in the unwinder, we might have | |
4897 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4898 | if (within_current_scope) |
4899 | { | |
4900 | struct symbol *function; | |
4901 | ||
4902 | function = get_frame_function (fr); | |
4903 | if (function == NULL | |
4904 | || !contained_in (b->exp_valid_block, | |
4905 | SYMBOL_BLOCK_VALUE (function))) | |
4906 | within_current_scope = 0; | |
4907 | } | |
69fbadd5 | 4908 | |
edb3359d | 4909 | if (within_current_scope) |
c906108c SS |
4910 | /* If we end up stopping, the current frame will get selected |
4911 | in normal_stop. So this call to select_frame won't affect | |
4912 | the user. */ | |
0f7d239c | 4913 | select_frame (fr); |
c906108c | 4914 | } |
c5aa993b | 4915 | |
c906108c SS |
4916 | if (within_current_scope) |
4917 | { | |
4a64f543 MS |
4918 | /* We use value_{,free_to_}mark because it could be a *long* |
4919 | time before we return to the command level and call | |
4920 | free_all_values. We can't call free_all_values because we | |
4921 | might be in the middle of evaluating a function call. */ | |
c906108c | 4922 | |
0cf6dd15 | 4923 | int pc = 0; |
9c06b0b4 | 4924 | struct value *mark; |
fa4727a6 DJ |
4925 | struct value *new_val; |
4926 | ||
c1fc2657 | 4927 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4928 | /* Since we don't know the exact trigger address (from |
4929 | stopped_data_address), just tell the user we've triggered | |
4930 | a mask watchpoint. */ | |
4931 | return WP_VALUE_CHANGED; | |
4932 | ||
4933 | mark = value_mark (); | |
4d01a485 | 4934 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4935 | |
bb9d5f81 PP |
4936 | if (b->val_bitsize != 0) |
4937 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4938 | ||
4a64f543 MS |
4939 | /* We use value_equal_contents instead of value_equal because |
4940 | the latter coerces an array to a pointer, thus comparing just | |
4941 | the address of the array instead of its contents. This is | |
4942 | not what we want. */ | |
fa4727a6 | 4943 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4944 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4945 | new_val))) | |
c906108c | 4946 | { |
c906108c | 4947 | bs->old_val = b->val; |
850645cf | 4948 | b->val = release_value (new_val); |
4c1d86d9 | 4949 | b->val_valid = true; |
850645cf TT |
4950 | if (new_val != NULL) |
4951 | value_free_to_mark (mark); | |
c906108c SS |
4952 | return WP_VALUE_CHANGED; |
4953 | } | |
4954 | else | |
4955 | { | |
60e1c644 | 4956 | /* Nothing changed. */ |
c906108c | 4957 | value_free_to_mark (mark); |
c906108c SS |
4958 | return WP_VALUE_NOT_CHANGED; |
4959 | } | |
4960 | } | |
4961 | else | |
4962 | { | |
4963 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4964 | if we temporarily ignored the watchpoint, then when |
4965 | we reenter the block in which it is valid it contains | |
4966 | garbage (in the case of a function, it may have two | |
4967 | garbage values, one before and one after the prologue). | |
4968 | So we can't even detect the first assignment to it and | |
4969 | watch after that (since the garbage may or may not equal | |
4970 | the first value assigned). */ | |
348d480f PA |
4971 | /* We print all the stop information in |
4972 | breakpoint_ops->print_it, but in this case, by the time we | |
4973 | call breakpoint_ops->print_it this bp will be deleted | |
4974 | already. So we have no choice but print the information | |
4975 | here. */ | |
468afe6c | 4976 | |
0e454242 | 4977 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4978 | { |
4979 | struct ui_out *uiout = current_uiout; | |
4980 | ||
112e8700 SM |
4981 | if (uiout->is_mi_like_p ()) |
4982 | uiout->field_string | |
4983 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
4984 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
4985 | "left the block in\n" | |
4986 | "which its expression is valid.\n", | |
4987 | signed_field ("wpnum", b->number)); | |
468afe6c | 4988 | } |
4ce44c66 | 4989 | |
cdac0397 | 4990 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4991 | b->commands = NULL; |
d0fb5eae | 4992 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4993 | |
4994 | return WP_DELETED; | |
4995 | } | |
4996 | } | |
4997 | ||
18a18393 | 4998 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4999 | breakpoint location BL. This function does not check if we should |
5000 | stop, only if BL explains the stop. */ | |
5001 | ||
18a18393 | 5002 | static int |
6c95b8df | 5003 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5004 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5005 | const struct target_waitstatus *ws) |
18a18393 VP |
5006 | { |
5007 | struct breakpoint *b = bl->owner; | |
5008 | ||
348d480f | 5009 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5010 | gdb_assert (b != NULL); |
5011 | ||
bd522513 | 5012 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5013 | } |
5014 | ||
3a5c3e22 PA |
5015 | /* Determine if the watched values have actually changed, and we |
5016 | should stop. If not, set BS->stop to 0. */ | |
5017 | ||
18a18393 VP |
5018 | static void |
5019 | bpstat_check_watchpoint (bpstat bs) | |
5020 | { | |
2bdf28a0 | 5021 | const struct bp_location *bl; |
3a5c3e22 | 5022 | struct watchpoint *b; |
2bdf28a0 JK |
5023 | |
5024 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5025 | bl = bs->bp_location_at; |
2bdf28a0 | 5026 | gdb_assert (bl != NULL); |
3a5c3e22 | 5027 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5028 | gdb_assert (b != NULL); |
18a18393 | 5029 | |
18a18393 | 5030 | { |
18a18393 VP |
5031 | int must_check_value = 0; |
5032 | ||
c1fc2657 | 5033 | if (b->type == bp_watchpoint) |
18a18393 VP |
5034 | /* For a software watchpoint, we must always check the |
5035 | watched value. */ | |
5036 | must_check_value = 1; | |
5037 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5038 | /* We have a hardware watchpoint (read, write, or access) | |
5039 | and the target earlier reported an address watched by | |
5040 | this watchpoint. */ | |
5041 | must_check_value = 1; | |
5042 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5043 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5044 | /* We were stopped by a hardware watchpoint, but the target could |
5045 | not report the data address. We must check the watchpoint's | |
5046 | value. Access and read watchpoints are out of luck; without | |
5047 | a data address, we can't figure it out. */ | |
5048 | must_check_value = 1; | |
3a5c3e22 | 5049 | |
18a18393 VP |
5050 | if (must_check_value) |
5051 | { | |
bf469271 PA |
5052 | wp_check_result e; |
5053 | ||
a70b8144 | 5054 | try |
bf469271 PA |
5055 | { |
5056 | e = watchpoint_check (bs); | |
5057 | } | |
230d2906 | 5058 | catch (const gdb_exception &ex) |
bf469271 PA |
5059 | { |
5060 | exception_fprintf (gdb_stderr, ex, | |
5061 | "Error evaluating expression " | |
5062 | "for watchpoint %d\n", | |
5063 | b->number); | |
5064 | ||
5065 | SWITCH_THRU_ALL_UIS () | |
5066 | { | |
5067 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5068 | b->number); | |
5069 | } | |
5070 | watchpoint_del_at_next_stop (b); | |
5071 | e = WP_DELETED; | |
5072 | } | |
bf469271 | 5073 | |
18a18393 VP |
5074 | switch (e) |
5075 | { | |
5076 | case WP_DELETED: | |
5077 | /* We've already printed what needs to be printed. */ | |
5078 | bs->print_it = print_it_done; | |
5079 | /* Stop. */ | |
5080 | break; | |
60e1c644 PA |
5081 | case WP_IGNORE: |
5082 | bs->print_it = print_it_noop; | |
5083 | bs->stop = 0; | |
5084 | break; | |
18a18393 | 5085 | case WP_VALUE_CHANGED: |
c1fc2657 | 5086 | if (b->type == bp_read_watchpoint) |
18a18393 | 5087 | { |
85d721b8 PA |
5088 | /* There are two cases to consider here: |
5089 | ||
4a64f543 | 5090 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5091 | In that case, trust the target, and always report |
5092 | the watchpoint hit to the user. Even though | |
5093 | reads don't cause value changes, the value may | |
5094 | have changed since the last time it was read, and | |
5095 | since we're not trapping writes, we will not see | |
5096 | those, and as such we should ignore our notion of | |
5097 | old value. | |
5098 | ||
4a64f543 | 5099 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5100 | reads and writes. There are two ways this may |
5101 | happen: | |
5102 | ||
4a64f543 | 5103 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5104 | reads only, but can break on accesses (reads or |
5105 | writes), such as e.g., x86. We detect this case | |
5106 | at the time we try to insert read watchpoints. | |
5107 | ||
4a64f543 | 5108 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5109 | watchpoints, but, the user set an access or write |
5110 | watchpoint watching the same memory as this read | |
5111 | watchpoint. | |
5112 | ||
5113 | If we're watching memory writes as well as reads, | |
5114 | ignore watchpoint hits when we find that the | |
5115 | value hasn't changed, as reads don't cause | |
5116 | changes. This still gives false positives when | |
5117 | the program writes the same value to memory as | |
5118 | what there was already in memory (we will confuse | |
5119 | it for a read), but it's much better than | |
5120 | nothing. */ | |
5121 | ||
5122 | int other_write_watchpoint = 0; | |
5123 | ||
5124 | if (bl->watchpoint_type == hw_read) | |
5125 | { | |
5126 | struct breakpoint *other_b; | |
5127 | ||
5128 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5129 | if (other_b->type == bp_hardware_watchpoint |
5130 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5131 | { |
3a5c3e22 PA |
5132 | struct watchpoint *other_w = |
5133 | (struct watchpoint *) other_b; | |
5134 | ||
5135 | if (other_w->watchpoint_triggered | |
5136 | == watch_triggered_yes) | |
5137 | { | |
5138 | other_write_watchpoint = 1; | |
5139 | break; | |
5140 | } | |
85d721b8 PA |
5141 | } |
5142 | } | |
5143 | ||
5144 | if (other_write_watchpoint | |
5145 | || bl->watchpoint_type == hw_access) | |
5146 | { | |
5147 | /* We're watching the same memory for writes, | |
5148 | and the value changed since the last time we | |
5149 | updated it, so this trap must be for a write. | |
5150 | Ignore it. */ | |
5151 | bs->print_it = print_it_noop; | |
5152 | bs->stop = 0; | |
5153 | } | |
18a18393 VP |
5154 | } |
5155 | break; | |
5156 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5157 | if (b->type == bp_hardware_watchpoint |
5158 | || b->type == bp_watchpoint) | |
18a18393 VP |
5159 | { |
5160 | /* Don't stop: write watchpoints shouldn't fire if | |
5161 | the value hasn't changed. */ | |
5162 | bs->print_it = print_it_noop; | |
5163 | bs->stop = 0; | |
5164 | } | |
5165 | /* Stop. */ | |
5166 | break; | |
5167 | default: | |
5168 | /* Can't happen. */ | |
18a18393 VP |
5169 | break; |
5170 | } | |
5171 | } | |
5172 | else /* must_check_value == 0 */ | |
5173 | { | |
5174 | /* This is a case where some watchpoint(s) triggered, but | |
5175 | not at the address of this watchpoint, or else no | |
5176 | watchpoint triggered after all. So don't print | |
5177 | anything for this watchpoint. */ | |
5178 | bs->print_it = print_it_noop; | |
5179 | bs->stop = 0; | |
5180 | } | |
5181 | } | |
5182 | } | |
5183 | ||
7d4df6a4 DE |
5184 | /* For breakpoints that are currently marked as telling gdb to stop, |
5185 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5186 | of breakpoint referred to by BS. If we should not stop for this |
5187 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5188 | |
18a18393 | 5189 | static void |
00431a78 | 5190 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5191 | { |
2bdf28a0 JK |
5192 | const struct bp_location *bl; |
5193 | struct breakpoint *b; | |
bf469271 PA |
5194 | /* Assume stop. */ |
5195 | bool condition_result = true; | |
7d4df6a4 DE |
5196 | struct expression *cond; |
5197 | ||
5198 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5199 | |
5200 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5201 | bl = bs->bp_location_at; |
2bdf28a0 | 5202 | gdb_assert (bl != NULL); |
f431efe5 | 5203 | b = bs->breakpoint_at; |
2bdf28a0 | 5204 | gdb_assert (b != NULL); |
18a18393 | 5205 | |
b775012e LM |
5206 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5207 | need to do so again since GDB does not know if we stopped due to a | |
5208 | breakpoint or a single step breakpoint. */ | |
5209 | ||
18a18393 | 5210 | if (frame_id_p (b->frame_id) |
edb3359d | 5211 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5212 | { |
7d4df6a4 DE |
5213 | bs->stop = 0; |
5214 | return; | |
5215 | } | |
60e1c644 | 5216 | |
12ab52e9 PA |
5217 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5218 | evaluating the condition if this isn't the specified | |
5219 | thread/task. */ | |
00431a78 PA |
5220 | if ((b->thread != -1 && b->thread != thread->global_num) |
5221 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5222 | { |
5223 | bs->stop = 0; | |
5224 | return; | |
5225 | } | |
5226 | ||
6dddc817 DE |
5227 | /* Evaluate extension language breakpoints that have a "stop" method |
5228 | implemented. */ | |
5229 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5230 | |
7d4df6a4 DE |
5231 | if (is_watchpoint (b)) |
5232 | { | |
5233 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5234 | |
4d01a485 | 5235 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5236 | } |
5237 | else | |
4d01a485 | 5238 | cond = bl->cond.get (); |
60e1c644 | 5239 | |
7d4df6a4 DE |
5240 | if (cond && b->disposition != disp_del_at_next_stop) |
5241 | { | |
5242 | int within_current_scope = 1; | |
5243 | struct watchpoint * w; | |
60e1c644 | 5244 | |
7d4df6a4 DE |
5245 | /* We use value_mark and value_free_to_mark because it could |
5246 | be a long time before we return to the command level and | |
5247 | call free_all_values. We can't call free_all_values | |
5248 | because we might be in the middle of evaluating a | |
5249 | function call. */ | |
5250 | struct value *mark = value_mark (); | |
5251 | ||
5252 | if (is_watchpoint (b)) | |
5253 | w = (struct watchpoint *) b; | |
5254 | else | |
5255 | w = NULL; | |
5256 | ||
5257 | /* Need to select the frame, with all that implies so that | |
5258 | the conditions will have the right context. Because we | |
5259 | use the frame, we will not see an inlined function's | |
5260 | variables when we arrive at a breakpoint at the start | |
5261 | of the inlined function; the current frame will be the | |
5262 | call site. */ | |
5263 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5264 | select_frame (get_current_frame ()); | |
5265 | else | |
18a18393 | 5266 | { |
7d4df6a4 DE |
5267 | struct frame_info *frame; |
5268 | ||
5269 | /* For local watchpoint expressions, which particular | |
5270 | instance of a local is being watched matters, so we | |
5271 | keep track of the frame to evaluate the expression | |
5272 | in. To evaluate the condition however, it doesn't | |
5273 | really matter which instantiation of the function | |
5274 | where the condition makes sense triggers the | |
5275 | watchpoint. This allows an expression like "watch | |
5276 | global if q > 10" set in `func', catch writes to | |
5277 | global on all threads that call `func', or catch | |
5278 | writes on all recursive calls of `func' by a single | |
5279 | thread. We simply always evaluate the condition in | |
5280 | the innermost frame that's executing where it makes | |
5281 | sense to evaluate the condition. It seems | |
5282 | intuitive. */ | |
5283 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5284 | if (frame != NULL) | |
5285 | select_frame (frame); | |
5286 | else | |
5287 | within_current_scope = 0; | |
18a18393 | 5288 | } |
7d4df6a4 | 5289 | if (within_current_scope) |
bf469271 | 5290 | { |
a70b8144 | 5291 | try |
bf469271 PA |
5292 | { |
5293 | condition_result = breakpoint_cond_eval (cond); | |
5294 | } | |
230d2906 | 5295 | catch (const gdb_exception &ex) |
bf469271 PA |
5296 | { |
5297 | exception_fprintf (gdb_stderr, ex, | |
5298 | "Error in testing breakpoint condition:\n"); | |
5299 | } | |
bf469271 | 5300 | } |
7d4df6a4 | 5301 | else |
18a18393 | 5302 | { |
7d4df6a4 DE |
5303 | warning (_("Watchpoint condition cannot be tested " |
5304 | "in the current scope")); | |
5305 | /* If we failed to set the right context for this | |
5306 | watchpoint, unconditionally report it. */ | |
18a18393 | 5307 | } |
7d4df6a4 DE |
5308 | /* FIXME-someday, should give breakpoint #. */ |
5309 | value_free_to_mark (mark); | |
18a18393 | 5310 | } |
7d4df6a4 | 5311 | |
bf469271 | 5312 | if (cond && !condition_result) |
7d4df6a4 DE |
5313 | { |
5314 | bs->stop = 0; | |
5315 | } | |
7d4df6a4 DE |
5316 | else if (b->ignore_count > 0) |
5317 | { | |
5318 | b->ignore_count--; | |
5319 | bs->stop = 0; | |
5320 | /* Increase the hit count even though we don't stop. */ | |
5321 | ++(b->hit_count); | |
76727919 | 5322 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5323 | } |
18a18393 VP |
5324 | } |
5325 | ||
1cf4d951 PA |
5326 | /* Returns true if we need to track moribund locations of LOC's type |
5327 | on the current target. */ | |
5328 | ||
5329 | static int | |
5330 | need_moribund_for_location_type (struct bp_location *loc) | |
5331 | { | |
5332 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5333 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5334 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5335 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5336 | } | |
5337 | ||
ddfe970e | 5338 | /* See breakpoint.h. */ |
c906108c SS |
5339 | |
5340 | bpstat | |
ddfe970e | 5341 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5342 | const struct target_waitstatus *ws) |
c906108c | 5343 | { |
ddfe970e | 5344 | struct breakpoint *b; |
5760d0ab | 5345 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5346 | |
429374b8 JK |
5347 | ALL_BREAKPOINTS (b) |
5348 | { | |
1a853c52 | 5349 | if (!breakpoint_enabled (b)) |
429374b8 | 5350 | continue; |
a5606eee | 5351 | |
ddfe970e | 5352 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5353 | { |
4a64f543 MS |
5354 | /* For hardware watchpoints, we look only at the first |
5355 | location. The watchpoint_check function will work on the | |
5356 | entire expression, not the individual locations. For | |
5357 | read watchpoints, the watchpoints_triggered function has | |
5358 | checked all locations already. */ | |
429374b8 JK |
5359 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5360 | break; | |
18a18393 | 5361 | |
b5fa468f | 5362 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5363 | continue; |
c5aa993b | 5364 | |
09ac7c10 | 5365 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5366 | continue; |
c5aa993b | 5367 | |
4a64f543 MS |
5368 | /* Come here if it's a watchpoint, or if the break address |
5369 | matches. */ | |
c5aa993b | 5370 | |
ddfe970e KS |
5371 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5372 | explain stop. */ | |
c5aa993b | 5373 | |
f431efe5 PA |
5374 | /* Assume we stop. Should we find a watchpoint that is not |
5375 | actually triggered, or if the condition of the breakpoint | |
5376 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5377 | bs->stop = 1; |
5378 | bs->print = 1; | |
d983da9c | 5379 | |
f431efe5 PA |
5380 | /* If this is a scope breakpoint, mark the associated |
5381 | watchpoint as triggered so that we will handle the | |
5382 | out-of-scope event. We'll get to the watchpoint next | |
5383 | iteration. */ | |
d0fb5eae | 5384 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5385 | { |
5386 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5387 | ||
5388 | w->watchpoint_triggered = watch_triggered_yes; | |
5389 | } | |
f431efe5 PA |
5390 | } |
5391 | } | |
5392 | ||
7c16b83e | 5393 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5394 | if (!target_supports_stopped_by_sw_breakpoint () |
5395 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5396 | { |
1123588c | 5397 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5398 | { |
1cf4d951 PA |
5399 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5400 | && need_moribund_for_location_type (loc)) | |
5401 | { | |
ddfe970e | 5402 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5403 | /* For hits of moribund locations, we should just proceed. */ |
5404 | bs->stop = 0; | |
5405 | bs->print = 0; | |
5406 | bs->print_it = print_it_noop; | |
5407 | } | |
f431efe5 PA |
5408 | } |
5409 | } | |
5410 | ||
ddfe970e KS |
5411 | return bs_head; |
5412 | } | |
5413 | ||
5414 | /* See breakpoint.h. */ | |
5415 | ||
5416 | bpstat | |
5417 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5418 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5419 | const struct target_waitstatus *ws, |
5420 | bpstat stop_chain) | |
5421 | { | |
5422 | struct breakpoint *b = NULL; | |
5423 | /* First item of allocated bpstat's. */ | |
5424 | bpstat bs_head = stop_chain; | |
5425 | bpstat bs; | |
5426 | int need_remove_insert; | |
5427 | int removed_any; | |
5428 | ||
5429 | /* First, build the bpstat chain with locations that explain a | |
5430 | target stop, while being careful to not set the target running, | |
5431 | as that may invalidate locations (in particular watchpoint | |
5432 | locations are recreated). Resuming will happen here with | |
5433 | breakpoint conditions or watchpoint expressions that include | |
5434 | inferior function calls. */ | |
5435 | if (bs_head == NULL) | |
5436 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5437 | ||
edcc5120 TT |
5438 | /* A bit of special processing for shlib breakpoints. We need to |
5439 | process solib loading here, so that the lists of loaded and | |
5440 | unloaded libraries are correct before we handle "catch load" and | |
5441 | "catch unload". */ | |
5442 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5443 | { | |
5d268276 | 5444 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5445 | { |
5446 | handle_solib_event (); | |
5447 | break; | |
5448 | } | |
5449 | } | |
5450 | ||
f431efe5 PA |
5451 | /* Now go through the locations that caused the target to stop, and |
5452 | check whether we're interested in reporting this stop to higher | |
5453 | layers, or whether we should resume the target transparently. */ | |
5454 | ||
5455 | removed_any = 0; | |
5456 | ||
5760d0ab | 5457 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5458 | { |
5459 | if (!bs->stop) | |
5460 | continue; | |
5461 | ||
f431efe5 | 5462 | b = bs->breakpoint_at; |
348d480f PA |
5463 | b->ops->check_status (bs); |
5464 | if (bs->stop) | |
28010a5d | 5465 | { |
00431a78 | 5466 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5467 | |
429374b8 JK |
5468 | if (bs->stop) |
5469 | { | |
5470 | ++(b->hit_count); | |
76727919 | 5471 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5472 | |
4a64f543 | 5473 | /* We will stop here. */ |
429374b8 JK |
5474 | if (b->disposition == disp_disable) |
5475 | { | |
816338b5 | 5476 | --(b->enable_count); |
1a853c52 | 5477 | if (b->enable_count <= 0) |
429374b8 | 5478 | b->enable_state = bp_disabled; |
f431efe5 | 5479 | removed_any = 1; |
429374b8 JK |
5480 | } |
5481 | if (b->silent) | |
5482 | bs->print = 0; | |
5483 | bs->commands = b->commands; | |
abf85f46 | 5484 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5485 | ? bs->commands.get () : NULL)) |
abf85f46 | 5486 | bs->print = 0; |
9d6e6e84 HZ |
5487 | |
5488 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5489 | } |
5490 | ||
348d480f | 5491 | } |
a9b3a50f PA |
5492 | |
5493 | /* Print nothing for this entry if we don't stop or don't | |
5494 | print. */ | |
5495 | if (!bs->stop || !bs->print) | |
5496 | bs->print_it = print_it_noop; | |
429374b8 | 5497 | } |
876fa593 | 5498 | |
d983da9c DJ |
5499 | /* If we aren't stopping, the value of some hardware watchpoint may |
5500 | not have changed, but the intermediate memory locations we are | |
5501 | watching may have. Don't bother if we're stopping; this will get | |
5502 | done later. */ | |
d832cb68 | 5503 | need_remove_insert = 0; |
5760d0ab JK |
5504 | if (! bpstat_causes_stop (bs_head)) |
5505 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5506 | if (!bs->stop |
f431efe5 PA |
5507 | && bs->breakpoint_at |
5508 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5509 | { |
3a5c3e22 PA |
5510 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5511 | ||
5512 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5513 | need_remove_insert = 1; |
d983da9c DJ |
5514 | } |
5515 | ||
d832cb68 | 5516 | if (need_remove_insert) |
44702360 | 5517 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5518 | else if (removed_any) |
44702360 | 5519 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5520 | |
5760d0ab | 5521 | return bs_head; |
c906108c | 5522 | } |
628fe4e4 JK |
5523 | |
5524 | static void | |
61c26be8 | 5525 | handle_jit_event (CORE_ADDR address) |
628fe4e4 | 5526 | { |
628fe4e4 JK |
5527 | struct gdbarch *gdbarch; |
5528 | ||
1eb8556f | 5529 | infrun_debug_printf ("handling bp_jit_event"); |
243a9253 | 5530 | |
628fe4e4 JK |
5531 | /* Switch terminal for any messages produced by |
5532 | breakpoint_re_set. */ | |
223ffa71 | 5533 | target_terminal::ours_for_output (); |
628fe4e4 | 5534 | |
61c26be8 MS |
5535 | gdbarch = get_frame_arch (get_current_frame ()); |
5536 | /* This event is caused by a breakpoint set in `jit_breakpoint_re_set`, | |
5537 | thus it is expected that its objectfile can be found through | |
5538 | minimal symbol lookup. If it doesn't work (and assert fails), it | |
5539 | most likely means that `jit_breakpoint_re_set` was changes and this | |
5540 | function needs to be updated too. */ | |
5541 | bound_minimal_symbol jit_bp_sym = lookup_minimal_symbol_by_pc (address); | |
5542 | gdb_assert (jit_bp_sym.objfile != nullptr); | |
5543 | jit_event_handler (gdbarch, jit_bp_sym.objfile); | |
628fe4e4 | 5544 | |
223ffa71 | 5545 | target_terminal::inferior (); |
628fe4e4 JK |
5546 | } |
5547 | ||
5548 | /* Prepare WHAT final decision for infrun. */ | |
5549 | ||
5550 | /* Decide what infrun needs to do with this bpstat. */ | |
5551 | ||
c906108c | 5552 | struct bpstat_what |
0e30163f | 5553 | bpstat_what (bpstat bs_head) |
c906108c | 5554 | { |
c906108c | 5555 | struct bpstat_what retval; |
0e30163f | 5556 | bpstat bs; |
c906108c | 5557 | |
628fe4e4 | 5558 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5559 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5560 | retval.is_longjmp = false; |
628fe4e4 | 5561 | |
0e30163f | 5562 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5563 | { |
628fe4e4 JK |
5564 | /* Extract this BS's action. After processing each BS, we check |
5565 | if its action overrides all we've seem so far. */ | |
5566 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5567 | enum bptype bptype; | |
5568 | ||
c906108c | 5569 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5570 | { |
5571 | /* I suspect this can happen if it was a momentary | |
5572 | breakpoint which has since been deleted. */ | |
5573 | bptype = bp_none; | |
5574 | } | |
20874c92 | 5575 | else |
f431efe5 | 5576 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5577 | |
5578 | switch (bptype) | |
c906108c SS |
5579 | { |
5580 | case bp_none: | |
628fe4e4 | 5581 | break; |
c906108c SS |
5582 | case bp_breakpoint: |
5583 | case bp_hardware_breakpoint: | |
7c16b83e | 5584 | case bp_single_step: |
c906108c SS |
5585 | case bp_until: |
5586 | case bp_finish: | |
a9b3a50f | 5587 | case bp_shlib_event: |
c906108c SS |
5588 | if (bs->stop) |
5589 | { | |
5590 | if (bs->print) | |
628fe4e4 | 5591 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5592 | else |
628fe4e4 | 5593 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5594 | } |
5595 | else | |
628fe4e4 | 5596 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5597 | break; |
5598 | case bp_watchpoint: | |
5599 | case bp_hardware_watchpoint: | |
5600 | case bp_read_watchpoint: | |
5601 | case bp_access_watchpoint: | |
5602 | if (bs->stop) | |
5603 | { | |
5604 | if (bs->print) | |
628fe4e4 | 5605 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5606 | else |
628fe4e4 | 5607 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5608 | } |
5609 | else | |
628fe4e4 JK |
5610 | { |
5611 | /* There was a watchpoint, but we're not stopping. | |
5612 | This requires no further action. */ | |
5613 | } | |
c906108c SS |
5614 | break; |
5615 | case bp_longjmp: | |
e2e4d78b | 5616 | case bp_longjmp_call_dummy: |
186c406b | 5617 | case bp_exception: |
0a39bb32 PA |
5618 | if (bs->stop) |
5619 | { | |
5620 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5621 | retval.is_longjmp = bptype != bp_exception; | |
5622 | } | |
5623 | else | |
5624 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5625 | break; |
5626 | case bp_longjmp_resume: | |
186c406b | 5627 | case bp_exception_resume: |
0a39bb32 PA |
5628 | if (bs->stop) |
5629 | { | |
5630 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5631 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5632 | } | |
5633 | else | |
5634 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5635 | break; |
5636 | case bp_step_resume: | |
5637 | if (bs->stop) | |
628fe4e4 JK |
5638 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5639 | else | |
c906108c | 5640 | { |
628fe4e4 JK |
5641 | /* It is for the wrong frame. */ |
5642 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5643 | } |
c906108c | 5644 | break; |
2c03e5be PA |
5645 | case bp_hp_step_resume: |
5646 | if (bs->stop) | |
5647 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5648 | else | |
5649 | { | |
5650 | /* It is for the wrong frame. */ | |
5651 | this_action = BPSTAT_WHAT_SINGLE; | |
5652 | } | |
5653 | break; | |
c906108c | 5654 | case bp_watchpoint_scope: |
c4093a6a | 5655 | case bp_thread_event: |
1900040c | 5656 | case bp_overlay_event: |
0fd8e87f | 5657 | case bp_longjmp_master: |
aa7d318d | 5658 | case bp_std_terminate_master: |
186c406b | 5659 | case bp_exception_master: |
628fe4e4 | 5660 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5661 | break; |
ce78b96d | 5662 | case bp_catchpoint: |
c5aa993b JM |
5663 | if (bs->stop) |
5664 | { | |
5665 | if (bs->print) | |
628fe4e4 | 5666 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5667 | else |
628fe4e4 | 5668 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5669 | } |
5670 | else | |
628fe4e4 | 5671 | { |
cb1e4e32 PA |
5672 | /* Some catchpoints are implemented with breakpoints. |
5673 | For those, we need to step over the breakpoint. */ | |
5674 | if (bs->bp_location_at->loc_type != bp_loc_other) | |
5675 | this_action = BPSTAT_WHAT_SINGLE; | |
628fe4e4 JK |
5676 | } |
5677 | break; | |
628fe4e4 | 5678 | case bp_jit_event: |
628fe4e4 | 5679 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5680 | break; |
c906108c | 5681 | case bp_call_dummy: |
53a5351d JM |
5682 | /* Make sure the action is stop (silent or noisy), |
5683 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5684 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5685 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5686 | break; |
5687 | case bp_std_terminate: | |
5688 | /* Make sure the action is stop (silent or noisy), | |
5689 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5690 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5691 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5692 | break; |
1042e4c0 | 5693 | case bp_tracepoint: |
7a697b8d | 5694 | case bp_fast_tracepoint: |
0fb4aa4b | 5695 | case bp_static_tracepoint: |
1042e4c0 SS |
5696 | /* Tracepoint hits should not be reported back to GDB, and |
5697 | if one got through somehow, it should have been filtered | |
5698 | out already. */ | |
5699 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5700 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5701 | break; |
5702 | case bp_gnu_ifunc_resolver: | |
5703 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5704 | this_action = BPSTAT_WHAT_SINGLE; | |
5705 | break; | |
5706 | case bp_gnu_ifunc_resolver_return: | |
5707 | /* The breakpoint will be removed, execution will restart from the | |
5708 | PC of the former breakpoint. */ | |
5709 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5710 | break; | |
e7e0cddf SS |
5711 | |
5712 | case bp_dprintf: | |
a11cfd87 HZ |
5713 | if (bs->stop) |
5714 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5715 | else | |
5716 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5717 | break; |
5718 | ||
628fe4e4 JK |
5719 | default: |
5720 | internal_error (__FILE__, __LINE__, | |
5721 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5722 | } |
628fe4e4 | 5723 | |
325fac50 | 5724 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5725 | } |
628fe4e4 | 5726 | |
243a9253 PA |
5727 | return retval; |
5728 | } | |
628fe4e4 | 5729 | |
243a9253 PA |
5730 | void |
5731 | bpstat_run_callbacks (bpstat bs_head) | |
5732 | { | |
5733 | bpstat bs; | |
628fe4e4 | 5734 | |
0e30163f JK |
5735 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5736 | { | |
5737 | struct breakpoint *b = bs->breakpoint_at; | |
5738 | ||
5739 | if (b == NULL) | |
5740 | continue; | |
5741 | switch (b->type) | |
5742 | { | |
243a9253 | 5743 | case bp_jit_event: |
61c26be8 | 5744 | handle_jit_event (bs->bp_location_at->address); |
243a9253 | 5745 | break; |
0e30163f JK |
5746 | case bp_gnu_ifunc_resolver: |
5747 | gnu_ifunc_resolver_stop (b); | |
5748 | break; | |
5749 | case bp_gnu_ifunc_resolver_return: | |
5750 | gnu_ifunc_resolver_return_stop (b); | |
5751 | break; | |
5752 | } | |
5753 | } | |
c906108c SS |
5754 | } |
5755 | ||
4c462cb0 | 5756 | /* See breakpoint.h. */ |
c906108c | 5757 | |
4c462cb0 SM |
5758 | bool |
5759 | bpstat_should_step () | |
c906108c SS |
5760 | { |
5761 | struct breakpoint *b; | |
cc59ec59 | 5762 | |
c906108c | 5763 | ALL_BREAKPOINTS (b) |
717a8278 | 5764 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 SM |
5765 | return true; |
5766 | return false; | |
c906108c SS |
5767 | } |
5768 | ||
4c462cb0 SM |
5769 | /* See breakpoint.h. */ |
5770 | ||
5771 | bool | |
67822962 PA |
5772 | bpstat_causes_stop (bpstat bs) |
5773 | { | |
5774 | for (; bs != NULL; bs = bs->next) | |
5775 | if (bs->stop) | |
4c462cb0 | 5776 | return true; |
67822962 | 5777 | |
4c462cb0 | 5778 | return false; |
67822962 PA |
5779 | } |
5780 | ||
c906108c | 5781 | \f |
c5aa993b | 5782 | |
170b53b2 UW |
5783 | /* Compute a string of spaces suitable to indent the next line |
5784 | so it starts at the position corresponding to the table column | |
5785 | named COL_NAME in the currently active table of UIOUT. */ | |
5786 | ||
5787 | static char * | |
5788 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5789 | { | |
5790 | static char wrap_indent[80]; | |
5791 | int i, total_width, width, align; | |
c5209615 | 5792 | const char *text; |
170b53b2 UW |
5793 | |
5794 | total_width = 0; | |
112e8700 | 5795 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5796 | { |
5797 | if (strcmp (text, col_name) == 0) | |
5798 | { | |
5799 | gdb_assert (total_width < sizeof wrap_indent); | |
5800 | memset (wrap_indent, ' ', total_width); | |
5801 | wrap_indent[total_width] = 0; | |
5802 | ||
5803 | return wrap_indent; | |
5804 | } | |
5805 | ||
5806 | total_width += width + 1; | |
5807 | } | |
5808 | ||
5809 | return NULL; | |
5810 | } | |
5811 | ||
b775012e LM |
5812 | /* Determine if the locations of this breakpoint will have their conditions |
5813 | evaluated by the target, host or a mix of both. Returns the following: | |
5814 | ||
5815 | "host": Host evals condition. | |
5816 | "host or target": Host or Target evals condition. | |
5817 | "target": Target evals condition. | |
5818 | */ | |
5819 | ||
5820 | static const char * | |
5821 | bp_condition_evaluator (struct breakpoint *b) | |
5822 | { | |
5823 | struct bp_location *bl; | |
5824 | char host_evals = 0; | |
5825 | char target_evals = 0; | |
5826 | ||
5827 | if (!b) | |
5828 | return NULL; | |
5829 | ||
5830 | if (!is_breakpoint (b)) | |
5831 | return NULL; | |
5832 | ||
5833 | if (gdb_evaluates_breakpoint_condition_p () | |
5834 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5835 | return condition_evaluation_host; | |
5836 | ||
5837 | for (bl = b->loc; bl; bl = bl->next) | |
5838 | { | |
5839 | if (bl->cond_bytecode) | |
5840 | target_evals++; | |
5841 | else | |
5842 | host_evals++; | |
5843 | } | |
5844 | ||
5845 | if (host_evals && target_evals) | |
5846 | return condition_evaluation_both; | |
5847 | else if (target_evals) | |
5848 | return condition_evaluation_target; | |
5849 | else | |
5850 | return condition_evaluation_host; | |
5851 | } | |
5852 | ||
5853 | /* Determine the breakpoint location's condition evaluator. This is | |
5854 | similar to bp_condition_evaluator, but for locations. */ | |
5855 | ||
5856 | static const char * | |
5857 | bp_location_condition_evaluator (struct bp_location *bl) | |
5858 | { | |
5859 | if (bl && !is_breakpoint (bl->owner)) | |
5860 | return NULL; | |
5861 | ||
5862 | if (gdb_evaluates_breakpoint_condition_p () | |
5863 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5864 | return condition_evaluation_host; | |
5865 | ||
5866 | if (bl && bl->cond_bytecode) | |
5867 | return condition_evaluation_target; | |
5868 | else | |
5869 | return condition_evaluation_host; | |
5870 | } | |
5871 | ||
859825b8 JK |
5872 | /* Print the LOC location out of the list of B->LOC locations. */ |
5873 | ||
170b53b2 UW |
5874 | static void |
5875 | print_breakpoint_location (struct breakpoint *b, | |
5876 | struct bp_location *loc) | |
0d381245 | 5877 | { |
79a45e25 | 5878 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5879 | |
5880 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5881 | |
859825b8 JK |
5882 | if (loc != NULL && loc->shlib_disabled) |
5883 | loc = NULL; | |
5884 | ||
6c95b8df PA |
5885 | if (loc != NULL) |
5886 | set_current_program_space (loc->pspace); | |
5887 | ||
56435ebe | 5888 | if (b->display_canonical) |
d28cd78a | 5889 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5890 | else if (loc && loc->symtab) |
0d381245 | 5891 | { |
4a27f119 KS |
5892 | const struct symbol *sym = loc->symbol; |
5893 | ||
0d381245 VP |
5894 | if (sym) |
5895 | { | |
112e8700 | 5896 | uiout->text ("in "); |
987012b8 | 5897 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 5898 | function_name_style.style ()); |
112e8700 SM |
5899 | uiout->text (" "); |
5900 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5901 | uiout->text ("at "); | |
0d381245 | 5902 | } |
112e8700 | 5903 | uiout->field_string ("file", |
cbe56571 | 5904 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 5905 | file_name_style.style ()); |
112e8700 | 5906 | uiout->text (":"); |
05cba821 | 5907 | |
112e8700 SM |
5908 | if (uiout->is_mi_like_p ()) |
5909 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5910 | |
381befee | 5911 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 5912 | } |
859825b8 | 5913 | else if (loc) |
0d381245 | 5914 | { |
d7e74731 | 5915 | string_file stb; |
170b53b2 | 5916 | |
d7e74731 | 5917 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5918 | demangle, ""); |
112e8700 | 5919 | uiout->field_stream ("at", stb); |
0d381245 | 5920 | } |
859825b8 | 5921 | else |
f00aae0f | 5922 | { |
d28cd78a TT |
5923 | uiout->field_string ("pending", |
5924 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5925 | /* If extra_string is available, it could be holding a condition |
5926 | or dprintf arguments. In either case, make sure it is printed, | |
5927 | too, but only for non-MI streams. */ | |
112e8700 | 5928 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5929 | { |
5930 | if (b->type == bp_dprintf) | |
112e8700 | 5931 | uiout->text (","); |
f00aae0f | 5932 | else |
112e8700 SM |
5933 | uiout->text (" "); |
5934 | uiout->text (b->extra_string); | |
f00aae0f KS |
5935 | } |
5936 | } | |
6c95b8df | 5937 | |
b775012e LM |
5938 | if (loc && is_breakpoint (b) |
5939 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5940 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5941 | { | |
112e8700 SM |
5942 | uiout->text (" ("); |
5943 | uiout->field_string ("evaluated-by", | |
b775012e | 5944 | bp_location_condition_evaluator (loc)); |
112e8700 | 5945 | uiout->text (")"); |
b775012e | 5946 | } |
0d381245 VP |
5947 | } |
5948 | ||
269b11a2 PA |
5949 | static const char * |
5950 | bptype_string (enum bptype type) | |
c906108c | 5951 | { |
c4093a6a JM |
5952 | struct ep_type_description |
5953 | { | |
5954 | enum bptype type; | |
a121b7c1 | 5955 | const char *description; |
c4093a6a JM |
5956 | }; |
5957 | static struct ep_type_description bptypes[] = | |
c906108c | 5958 | { |
c5aa993b JM |
5959 | {bp_none, "?deleted?"}, |
5960 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5961 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5962 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5963 | {bp_until, "until"}, |
5964 | {bp_finish, "finish"}, | |
5965 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5966 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5967 | {bp_read_watchpoint, "read watchpoint"}, |
5968 | {bp_access_watchpoint, "acc watchpoint"}, | |
5969 | {bp_longjmp, "longjmp"}, | |
5970 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5971 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5972 | {bp_exception, "exception"}, |
5973 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5974 | {bp_step_resume, "step resume"}, |
2c03e5be | 5975 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5976 | {bp_watchpoint_scope, "watchpoint scope"}, |
5977 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5978 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5979 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5980 | {bp_thread_event, "thread events"}, |
1900040c | 5981 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5982 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5983 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5984 | {bp_exception_master, "exception master"}, |
ce78b96d | 5985 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5986 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5987 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5988 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5989 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5990 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5991 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5992 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5993 | }; |
269b11a2 PA |
5994 | |
5995 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5996 | || ((int) type != bptypes[(int) type].type)) | |
5997 | internal_error (__FILE__, __LINE__, | |
5998 | _("bptypes table does not describe type #%d."), | |
5999 | (int) type); | |
6000 | ||
6001 | return bptypes[(int) type].description; | |
6002 | } | |
6003 | ||
998580f1 MK |
6004 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6005 | For CLI, prefix the list with the string 'inf'. */ | |
6006 | ||
6007 | static void | |
6008 | output_thread_groups (struct ui_out *uiout, | |
6009 | const char *field_name, | |
5c632425 | 6010 | const std::vector<int> &inf_nums, |
998580f1 MK |
6011 | int mi_only) |
6012 | { | |
112e8700 | 6013 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6014 | |
6015 | /* For backward compatibility, don't display inferiors in CLI unless | |
6016 | there are several. Always display them for MI. */ | |
6017 | if (!is_mi && mi_only) | |
6018 | return; | |
6019 | ||
10f489e5 | 6020 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6021 | |
5c632425 | 6022 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6023 | { |
6024 | if (is_mi) | |
6025 | { | |
6026 | char mi_group[10]; | |
6027 | ||
5c632425 | 6028 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6029 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6030 | } |
6031 | else | |
6032 | { | |
6033 | if (i == 0) | |
112e8700 | 6034 | uiout->text (" inf "); |
998580f1 | 6035 | else |
112e8700 | 6036 | uiout->text (", "); |
998580f1 | 6037 | |
5c632425 | 6038 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6039 | } |
6040 | } | |
998580f1 MK |
6041 | } |
6042 | ||
a38118e5 PA |
6043 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6044 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6045 | info breakpoints" show the software breakpoint locations of | |
6046 | catchpoints, which are considered internal implementation | |
6047 | detail. */ | |
269b11a2 PA |
6048 | |
6049 | static void | |
6050 | print_one_breakpoint_location (struct breakpoint *b, | |
6051 | struct bp_location *loc, | |
6052 | int loc_number, | |
6053 | struct bp_location **last_loc, | |
a38118e5 | 6054 | int allflag, bool raw_loc) |
269b11a2 PA |
6055 | { |
6056 | struct command_line *l; | |
c2c6d25f | 6057 | static char bpenables[] = "nynny"; |
c906108c | 6058 | |
79a45e25 | 6059 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6060 | int header_of_multiple = 0; |
6061 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6062 | struct value_print_options opts; |
6063 | ||
6064 | get_user_print_options (&opts); | |
0d381245 VP |
6065 | |
6066 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6067 | /* See comment in print_one_breakpoint concerning treatment of |
6068 | breakpoints with single disabled location. */ | |
0d381245 VP |
6069 | if (loc == NULL |
6070 | && (b->loc != NULL | |
b5fa468f TBA |
6071 | && (b->loc->next != NULL |
6072 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
0d381245 VP |
6073 | header_of_multiple = 1; |
6074 | if (loc == NULL) | |
6075 | loc = b->loc; | |
6076 | ||
c4093a6a JM |
6077 | annotate_record (); |
6078 | ||
6079 | /* 1 */ | |
6080 | annotate_field (0); | |
0d381245 | 6081 | if (part_of_multiple) |
528e1572 | 6082 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6083 | else |
381befee | 6084 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6085 | |
6086 | /* 2 */ | |
6087 | annotate_field (1); | |
0d381245 | 6088 | if (part_of_multiple) |
112e8700 | 6089 | uiout->field_skip ("type"); |
269b11a2 | 6090 | else |
112e8700 | 6091 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6092 | |
6093 | /* 3 */ | |
6094 | annotate_field (2); | |
0d381245 | 6095 | if (part_of_multiple) |
112e8700 | 6096 | uiout->field_skip ("disp"); |
0d381245 | 6097 | else |
112e8700 | 6098 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6099 | |
c4093a6a JM |
6100 | /* 4 */ |
6101 | annotate_field (3); | |
0d381245 | 6102 | if (part_of_multiple) |
b5fa468f TBA |
6103 | uiout->field_string ("enabled", (loc->disabled_by_cond ? "N*" |
6104 | : (loc->enabled ? "y" : "n"))); | |
0d381245 | 6105 | else |
112e8700 | 6106 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6107 | |
c4093a6a | 6108 | /* 5 and 6 */ |
a38118e5 | 6109 | if (!raw_loc && b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6110 | b->ops->print_one (b, last_loc); |
3086aeae | 6111 | else |
a38118e5 PA |
6112 | { |
6113 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6114 | { |
6115 | struct watchpoint *w = (struct watchpoint *) b; | |
6116 | ||
6117 | /* Field 4, the address, is omitted (which makes the columns | |
6118 | not line up too nicely with the headers, but the effect | |
6119 | is relatively readable). */ | |
6120 | if (opts.addressprint) | |
112e8700 | 6121 | uiout->field_skip ("addr"); |
3a5c3e22 | 6122 | annotate_field (5); |
112e8700 | 6123 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6124 | } |
f06f1252 TT |
6125 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6126 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6127 | { |
6128 | if (opts.addressprint) | |
6129 | { | |
6130 | annotate_field (4); | |
6131 | if (header_of_multiple) | |
7f6aba03 TT |
6132 | uiout->field_string ("addr", "<MULTIPLE>", |
6133 | metadata_style.style ()); | |
a38118e5 | 6134 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6135 | uiout->field_string ("addr", "<PENDING>", |
6136 | metadata_style.style ()); | |
a38118e5 PA |
6137 | else |
6138 | uiout->field_core_addr ("addr", | |
6139 | loc->gdbarch, loc->address); | |
6140 | } | |
6141 | annotate_field (5); | |
6142 | if (!header_of_multiple) | |
6143 | print_breakpoint_location (b, loc); | |
6144 | if (b->loc) | |
6145 | *last_loc = b->loc; | |
6146 | } | |
6147 | } | |
6c95b8df | 6148 | |
998580f1 | 6149 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6150 | { |
5c632425 | 6151 | std::vector<int> inf_nums; |
998580f1 | 6152 | int mi_only = 1; |
6c95b8df | 6153 | |
08036331 | 6154 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6155 | { |
6156 | if (inf->pspace == loc->pspace) | |
5c632425 | 6157 | inf_nums.push_back (inf->num); |
6c95b8df | 6158 | } |
998580f1 MK |
6159 | |
6160 | /* For backward compatibility, don't display inferiors in CLI unless | |
6161 | there are several. Always display for MI. */ | |
6162 | if (allflag | |
6163 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6164 | && (program_spaces.size () > 1 |
998580f1 MK |
6165 | || number_of_inferiors () > 1) |
6166 | /* LOC is for existing B, it cannot be in | |
6167 | moribund_locations and thus having NULL OWNER. */ | |
6168 | && loc->owner->type != bp_catchpoint)) | |
6169 | mi_only = 0; | |
5c632425 | 6170 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6171 | } |
6172 | ||
4a306c9a | 6173 | if (!part_of_multiple) |
c4093a6a | 6174 | { |
4a306c9a JB |
6175 | if (b->thread != -1) |
6176 | { | |
6177 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6178 | "stop only in" line a little further down. */ |
112e8700 | 6179 | uiout->text (" thread "); |
381befee | 6180 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6181 | } |
6182 | else if (b->task != 0) | |
6183 | { | |
112e8700 | 6184 | uiout->text (" task "); |
381befee | 6185 | uiout->field_signed ("task", b->task); |
4a306c9a | 6186 | } |
c4093a6a | 6187 | } |
f1310107 | 6188 | |
112e8700 | 6189 | uiout->text ("\n"); |
f1310107 | 6190 | |
348d480f | 6191 | if (!part_of_multiple) |
f1310107 TJB |
6192 | b->ops->print_one_detail (b, uiout); |
6193 | ||
0d381245 | 6194 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6195 | { |
6196 | annotate_field (6); | |
112e8700 | 6197 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6198 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6199 | the frame ID. */ |
112e8700 | 6200 | uiout->field_core_addr ("frame", |
5af949e3 | 6201 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6202 | uiout->text ("\n"); |
c4093a6a JM |
6203 | } |
6204 | ||
28010a5d | 6205 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6206 | { |
6207 | annotate_field (7); | |
d77f58be | 6208 | if (is_tracepoint (b)) |
112e8700 | 6209 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6210 | else |
112e8700 SM |
6211 | uiout->text ("\tstop only if "); |
6212 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6213 | |
6214 | /* Print whether the target is doing the breakpoint's condition | |
6215 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6216 | if (is_breakpoint (b) | |
6217 | && breakpoint_condition_evaluation_mode () | |
6218 | == condition_evaluation_target) | |
6219 | { | |
6a831f06 PA |
6220 | uiout->message (" (%pF evals)", |
6221 | string_field ("evaluated-by", | |
6222 | bp_condition_evaluator (b))); | |
b775012e | 6223 | } |
112e8700 | 6224 | uiout->text ("\n"); |
0101ce28 JJ |
6225 | } |
6226 | ||
0d381245 | 6227 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6228 | { |
4a64f543 | 6229 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6230 | uiout->text ("\tstop only in thread "); |
6231 | if (uiout->is_mi_like_p ()) | |
381befee | 6232 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6233 | else |
6234 | { | |
6235 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6236 | ||
112e8700 | 6237 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6238 | } |
112e8700 | 6239 | uiout->text ("\n"); |
c4093a6a JM |
6240 | } |
6241 | ||
556ec64d YQ |
6242 | if (!part_of_multiple) |
6243 | { | |
6244 | if (b->hit_count) | |
31f56a27 YQ |
6245 | { |
6246 | /* FIXME should make an annotation for this. */ | |
6247 | if (is_catchpoint (b)) | |
112e8700 | 6248 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6249 | else if (is_tracepoint (b)) |
112e8700 | 6250 | uiout->text ("\ttracepoint"); |
31f56a27 | 6251 | else |
112e8700 SM |
6252 | uiout->text ("\tbreakpoint"); |
6253 | uiout->text (" already hit "); | |
381befee | 6254 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6255 | if (b->hit_count == 1) |
112e8700 | 6256 | uiout->text (" time\n"); |
31f56a27 | 6257 | else |
112e8700 | 6258 | uiout->text (" times\n"); |
31f56a27 | 6259 | } |
556ec64d YQ |
6260 | else |
6261 | { | |
31f56a27 | 6262 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6263 | if (uiout->is_mi_like_p ()) |
381befee | 6264 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6265 | } |
6266 | } | |
8b93c638 | 6267 | |
0d381245 | 6268 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6269 | { |
6270 | annotate_field (8); | |
6a831f06 PA |
6271 | uiout->message ("\tignore next %pF hits\n", |
6272 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6273 | } |
059fb39f | 6274 | |
816338b5 SS |
6275 | /* Note that an enable count of 1 corresponds to "enable once" |
6276 | behavior, which is reported by the combination of enablement and | |
6277 | disposition, so we don't need to mention it here. */ | |
6278 | if (!part_of_multiple && b->enable_count > 1) | |
6279 | { | |
6280 | annotate_field (8); | |
112e8700 | 6281 | uiout->text ("\tdisable after "); |
816338b5 SS |
6282 | /* Tweak the wording to clarify that ignore and enable counts |
6283 | are distinct, and have additive effect. */ | |
6284 | if (b->ignore_count) | |
112e8700 | 6285 | uiout->text ("additional "); |
816338b5 | 6286 | else |
112e8700 | 6287 | uiout->text ("next "); |
381befee | 6288 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6289 | uiout->text (" hits\n"); |
816338b5 SS |
6290 | } |
6291 | ||
f196051f SS |
6292 | if (!part_of_multiple && is_tracepoint (b)) |
6293 | { | |
6294 | struct tracepoint *tp = (struct tracepoint *) b; | |
6295 | ||
6296 | if (tp->traceframe_usage) | |
6297 | { | |
112e8700 | 6298 | uiout->text ("\ttrace buffer usage "); |
381befee | 6299 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6300 | uiout->text (" bytes\n"); |
f196051f SS |
6301 | } |
6302 | } | |
d3ce09f5 | 6303 | |
d1b0a7bf | 6304 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6305 | if (!part_of_multiple && l) |
c4093a6a JM |
6306 | { |
6307 | annotate_field (9); | |
2e783024 | 6308 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6309 | print_command_lines (uiout, l, 4); |
c4093a6a | 6310 | } |
d24317b4 | 6311 | |
d9b3f62e | 6312 | if (is_tracepoint (b)) |
1042e4c0 | 6313 | { |
d9b3f62e PA |
6314 | struct tracepoint *t = (struct tracepoint *) b; |
6315 | ||
6316 | if (!part_of_multiple && t->pass_count) | |
6317 | { | |
6318 | annotate_field (10); | |
112e8700 | 6319 | uiout->text ("\tpass count "); |
381befee | 6320 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6321 | uiout->text (" \n"); |
d9b3f62e | 6322 | } |
f2a8bc8a YQ |
6323 | |
6324 | /* Don't display it when tracepoint or tracepoint location is | |
6325 | pending. */ | |
6326 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6327 | { | |
6328 | annotate_field (11); | |
6329 | ||
112e8700 SM |
6330 | if (uiout->is_mi_like_p ()) |
6331 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6332 | loc->inserted ? "y" : "n"); |
6333 | else | |
6334 | { | |
6335 | if (loc->inserted) | |
112e8700 | 6336 | uiout->text ("\t"); |
f2a8bc8a | 6337 | else |
112e8700 SM |
6338 | uiout->text ("\tnot "); |
6339 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6340 | } |
6341 | } | |
1042e4c0 SS |
6342 | } |
6343 | ||
112e8700 | 6344 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6345 | { |
3a5c3e22 PA |
6346 | if (is_watchpoint (b)) |
6347 | { | |
6348 | struct watchpoint *w = (struct watchpoint *) b; | |
6349 | ||
112e8700 | 6350 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6351 | } |
f00aae0f | 6352 | else if (b->location != NULL |
d28cd78a | 6353 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6354 | uiout->field_string ("original-location", |
d28cd78a | 6355 | event_location_to_string (b->location.get ())); |
d24317b4 | 6356 | } |
c4093a6a | 6357 | } |
c5aa993b | 6358 | |
13674803 SM |
6359 | /* See breakpoint.h. */ |
6360 | ||
6361 | bool fix_multi_location_breakpoint_output_globally = false; | |
6362 | ||
0d381245 VP |
6363 | static void |
6364 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6365 | struct bp_location **last_loc, |
6c95b8df | 6366 | int allflag) |
0d381245 | 6367 | { |
79a45e25 | 6368 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6369 | bool use_fixed_output |
6370 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6371 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6372 | |
b4be1b06 | 6373 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
a38118e5 | 6374 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag, false); |
8d3788bd | 6375 | |
b4be1b06 SM |
6376 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6377 | are outside. */ | |
6378 | if (!use_fixed_output) | |
6379 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6380 | |
6381 | /* If this breakpoint has custom print function, | |
6382 | it's already printed. Otherwise, print individual | |
6383 | locations, if any. */ | |
a38118e5 PA |
6384 | if (b->ops == NULL |
6385 | || b->ops->print_one == NULL | |
6386 | || allflag) | |
0d381245 | 6387 | { |
4a64f543 MS |
6388 | /* If breakpoint has a single location that is disabled, we |
6389 | print it as if it had several locations, since otherwise it's | |
6390 | hard to represent "breakpoint enabled, location disabled" | |
6391 | situation. | |
6392 | ||
6393 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6394 | internally, that's not a property exposed to users. |
6395 | ||
6396 | Likewise, while catchpoints may be implemented with | |
6397 | breakpoints (e.g., catch throw), that's not a property | |
6398 | exposed to users. We do however display the internal | |
6399 | breakpoint locations with "maint info breakpoints". */ | |
6400 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6401 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6402 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6403 | && (allflag |
b5fa468f TBA |
6404 | || (b->loc && (b->loc->next |
6405 | || !b->loc->enabled | |
6406 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6407 | { |
b4be1b06 SM |
6408 | gdb::optional<ui_out_emit_list> locations_list; |
6409 | ||
6410 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6411 | MI record. For later versions, place breakpoint locations in a | |
6412 | list. */ | |
6413 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6414 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6415 | |
b4be1b06 SM |
6416 | int n = 1; |
6417 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next, ++n) | |
8d3788bd | 6418 | { |
b4be1b06 | 6419 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6420 | print_one_breakpoint_location (b, loc, n, last_loc, |
6421 | allflag, allflag); | |
8d3788bd | 6422 | } |
0d381245 VP |
6423 | } |
6424 | } | |
6425 | } | |
6426 | ||
a6d9a66e UW |
6427 | static int |
6428 | breakpoint_address_bits (struct breakpoint *b) | |
6429 | { | |
6430 | int print_address_bits = 0; | |
6431 | struct bp_location *loc; | |
6432 | ||
c6d81124 PA |
6433 | /* Software watchpoints that aren't watching memory don't have an |
6434 | address to print. */ | |
6435 | if (is_no_memory_software_watchpoint (b)) | |
6436 | return 0; | |
6437 | ||
a6d9a66e UW |
6438 | for (loc = b->loc; loc; loc = loc->next) |
6439 | { | |
c7437ca6 PA |
6440 | int addr_bit; |
6441 | ||
c7437ca6 | 6442 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6443 | if (addr_bit > print_address_bits) |
6444 | print_address_bits = addr_bit; | |
6445 | } | |
6446 | ||
6447 | return print_address_bits; | |
6448 | } | |
0d381245 | 6449 | |
65630365 | 6450 | /* See breakpoint.h. */ |
c5aa993b | 6451 | |
65630365 PA |
6452 | void |
6453 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6454 | { |
a6d9a66e | 6455 | struct bp_location *dummy_loc = NULL; |
65630365 | 6456 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6457 | } |
c5aa993b | 6458 | |
09d682a4 TT |
6459 | /* Return true if this breakpoint was set by the user, false if it is |
6460 | internal or momentary. */ | |
6461 | ||
6462 | int | |
6463 | user_breakpoint_p (struct breakpoint *b) | |
6464 | { | |
46c6471b | 6465 | return b->number > 0; |
09d682a4 TT |
6466 | } |
6467 | ||
93daf339 TT |
6468 | /* See breakpoint.h. */ |
6469 | ||
6470 | int | |
6471 | pending_breakpoint_p (struct breakpoint *b) | |
6472 | { | |
6473 | return b->loc == NULL; | |
6474 | } | |
6475 | ||
5c458ae8 SM |
6476 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6477 | ||
6478 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6479 | understood by number_or_range_parser. Only breakpoints included in this | |
6480 | list are then printed. | |
6481 | ||
6482 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6483 | ||
6484 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6485 | ones for which it returns true. | |
6486 | ||
6487 | Return the total number of breakpoints listed. */ | |
c906108c | 6488 | |
d77f58be | 6489 | static int |
5c458ae8 | 6490 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6491 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6492 | { |
52f0bd74 | 6493 | struct breakpoint *b; |
a6d9a66e | 6494 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6495 | int nr_printable_breakpoints; |
79a45b7d | 6496 | struct value_print_options opts; |
a6d9a66e | 6497 | int print_address_bits = 0; |
269b11a2 | 6498 | int print_type_col_width = 14; |
79a45e25 | 6499 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6500 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6501 | |
79a45b7d TT |
6502 | get_user_print_options (&opts); |
6503 | ||
4a64f543 MS |
6504 | /* Compute the number of rows in the table, as well as the size |
6505 | required for address fields. */ | |
7f3b0473 AC |
6506 | nr_printable_breakpoints = 0; |
6507 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6508 | { |
6509 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6510 | if (filter && !filter (b)) | |
6511 | continue; | |
6512 | ||
5c458ae8 | 6513 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6514 | accept. Skip the others. */ |
5c458ae8 | 6515 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6516 | { |
5c458ae8 | 6517 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6518 | continue; |
5c458ae8 | 6519 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6520 | continue; |
6521 | } | |
269b11a2 | 6522 | |
5c458ae8 | 6523 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6524 | { |
6525 | int addr_bit, type_len; | |
a6d9a66e | 6526 | |
e5a67952 MS |
6527 | addr_bit = breakpoint_address_bits (b); |
6528 | if (addr_bit > print_address_bits) | |
6529 | print_address_bits = addr_bit; | |
269b11a2 | 6530 | |
e5a67952 MS |
6531 | type_len = strlen (bptype_string (b->type)); |
6532 | if (type_len > print_type_col_width) | |
6533 | print_type_col_width = type_len; | |
6534 | ||
6535 | nr_printable_breakpoints++; | |
6536 | } | |
6537 | } | |
7f3b0473 | 6538 | |
4a2b031d TT |
6539 | { |
6540 | ui_out_emit_table table_emitter (uiout, | |
6541 | opts.addressprint ? 6 : 5, | |
6542 | nr_printable_breakpoints, | |
6543 | "BreakpointTable"); | |
6544 | ||
6545 | if (nr_printable_breakpoints > 0) | |
6546 | annotate_breakpoints_headers (); | |
6547 | if (nr_printable_breakpoints > 0) | |
6548 | annotate_field (0); | |
6549 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6550 | if (nr_printable_breakpoints > 0) | |
6551 | annotate_field (1); | |
6552 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6553 | if (nr_printable_breakpoints > 0) | |
6554 | annotate_field (2); | |
6555 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6556 | if (nr_printable_breakpoints > 0) | |
6557 | annotate_field (3); | |
6558 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6559 | if (opts.addressprint) | |
6560 | { | |
6561 | if (nr_printable_breakpoints > 0) | |
6562 | annotate_field (4); | |
6563 | if (print_address_bits <= 32) | |
6564 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6565 | else | |
6566 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6567 | } | |
6568 | if (nr_printable_breakpoints > 0) | |
6569 | annotate_field (5); | |
6570 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6571 | uiout->table_body (); | |
6572 | if (nr_printable_breakpoints > 0) | |
6573 | annotate_breakpoints_table (); | |
6574 | ||
6575 | ALL_BREAKPOINTS (b) | |
6576 | { | |
6577 | QUIT; | |
6578 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6579 | if (filter && !filter (b)) | |
6580 | continue; | |
e5a67952 | 6581 | |
5c458ae8 | 6582 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6583 | accept. Skip the others. */ |
e5a67952 | 6584 | |
5c458ae8 | 6585 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6586 | { |
5c458ae8 | 6587 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6588 | { |
5c458ae8 | 6589 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6590 | continue; |
6591 | } | |
6592 | else /* all others */ | |
6593 | { | |
5c458ae8 | 6594 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6595 | continue; |
6596 | } | |
6597 | } | |
6598 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6599 | show_internal is set. */ |
6600 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6601 | { |
6602 | print_one_breakpoint (b, &last_loc, show_internal); | |
6603 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
6604 | if (loc->disabled_by_cond) | |
6605 | has_disabled_by_cond_location = true; | |
6606 | } | |
4a2b031d TT |
6607 | } |
6608 | } | |
698384cd | 6609 | |
7f3b0473 | 6610 | if (nr_printable_breakpoints == 0) |
c906108c | 6611 | { |
4a64f543 MS |
6612 | /* If there's a filter, let the caller decide how to report |
6613 | empty list. */ | |
d77f58be SS |
6614 | if (!filter) |
6615 | { | |
5c458ae8 | 6616 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6617 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6618 | else |
112e8700 | 6619 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6620 | bp_num_list); |
d77f58be | 6621 | } |
c906108c SS |
6622 | } |
6623 | else | |
c4093a6a | 6624 | { |
a6d9a66e UW |
6625 | if (last_loc && !server_command) |
6626 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f TBA |
6627 | |
6628 | if (has_disabled_by_cond_location) | |
6629 | uiout->message (_("(*): Breakpoint condition is invalid at this " | |
6630 | "location.\n")); | |
c4093a6a | 6631 | } |
c906108c | 6632 | |
4a64f543 | 6633 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6634 | there have been breakpoints? */ |
c906108c | 6635 | annotate_breakpoints_table_end (); |
d77f58be SS |
6636 | |
6637 | return nr_printable_breakpoints; | |
c906108c SS |
6638 | } |
6639 | ||
ad443146 SS |
6640 | /* Display the value of default-collect in a way that is generally |
6641 | compatible with the breakpoint list. */ | |
6642 | ||
6643 | static void | |
6644 | default_collect_info (void) | |
6645 | { | |
79a45e25 PA |
6646 | struct ui_out *uiout = current_uiout; |
6647 | ||
ad443146 SS |
6648 | /* If it has no value (which is frequently the case), say nothing; a |
6649 | message like "No default-collect." gets in user's face when it's | |
6650 | not wanted. */ | |
6651 | if (!*default_collect) | |
6652 | return; | |
6653 | ||
6654 | /* The following phrase lines up nicely with per-tracepoint collect | |
6655 | actions. */ | |
112e8700 SM |
6656 | uiout->text ("default collect "); |
6657 | uiout->field_string ("default-collect", default_collect); | |
6658 | uiout->text (" \n"); | |
ad443146 SS |
6659 | } |
6660 | ||
c906108c | 6661 | static void |
0b39b52e | 6662 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6663 | { |
5c458ae8 | 6664 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6665 | |
6666 | default_collect_info (); | |
d77f58be SS |
6667 | } |
6668 | ||
6669 | static void | |
1d12d88f | 6670 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6671 | { |
5c458ae8 | 6672 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6673 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6674 | |
6675 | if (num_printed == 0) | |
6676 | { | |
e5a67952 | 6677 | if (args == NULL || *args == '\0') |
112e8700 | 6678 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6679 | else |
112e8700 | 6680 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6681 | } |
c906108c SS |
6682 | } |
6683 | ||
7a292a7a | 6684 | static void |
4495129a | 6685 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6686 | { |
5c458ae8 | 6687 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6688 | |
6689 | default_collect_info (); | |
c906108c SS |
6690 | } |
6691 | ||
0d381245 | 6692 | static int |
714835d5 | 6693 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6694 | struct program_space *pspace, |
714835d5 | 6695 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6696 | { |
6697 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6698 | |
0d381245 VP |
6699 | for (; bl; bl = bl->next) |
6700 | { | |
6c95b8df PA |
6701 | if (bl->pspace == pspace |
6702 | && bl->address == pc | |
0d381245 VP |
6703 | && (!overlay_debugging || bl->section == section)) |
6704 | return 1; | |
6705 | } | |
6706 | return 0; | |
6707 | } | |
6708 | ||
672f9b60 | 6709 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6710 | concerns with logical breakpoints, so we match program spaces, not |
6711 | address spaces. */ | |
c906108c SS |
6712 | |
6713 | static void | |
6c95b8df PA |
6714 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6715 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6716 | struct obj_section *section, int thread) |
c906108c | 6717 | { |
52f0bd74 AC |
6718 | int others = 0; |
6719 | struct breakpoint *b; | |
c906108c SS |
6720 | |
6721 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6722 | others += (user_breakpoint_p (b) |
6723 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6724 | if (others > 0) |
6725 | { | |
a3f17187 AC |
6726 | if (others == 1) |
6727 | printf_filtered (_("Note: breakpoint ")); | |
6728 | else /* if (others == ???) */ | |
6729 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6730 | ALL_BREAKPOINTS (b) |
672f9b60 | 6731 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6732 | { |
6733 | others--; | |
6734 | printf_filtered ("%d", b->number); | |
6735 | if (b->thread == -1 && thread != -1) | |
6736 | printf_filtered (" (all threads)"); | |
6737 | else if (b->thread != -1) | |
6738 | printf_filtered (" (thread %d)", b->thread); | |
6739 | printf_filtered ("%s%s ", | |
059fb39f | 6740 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6741 | || b->enable_state == bp_call_disabled) |
0d381245 | 6742 | ? " (disabled)" |
0d381245 VP |
6743 | : ""), |
6744 | (others > 1) ? "," | |
6745 | : ((others == 1) ? " and" : "")); | |
6746 | } | |
6a831f06 PA |
6747 | current_uiout->message (_("also set at pc %ps.\n"), |
6748 | styled_string (address_style.style (), | |
6749 | paddress (gdbarch, pc))); | |
c906108c SS |
6750 | } |
6751 | } | |
6752 | \f | |
c906108c | 6753 | |
cb1e4e32 PA |
6754 | /* Return true iff it is meaningful to use the address member of LOC. |
6755 | For some breakpoint types, the locations' address members are | |
6756 | irrelevant and it makes no sense to attempt to compare them to | |
6757 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6758 | |
cb1e4e32 PA |
6759 | More specifically, software watchpoints and catchpoints that are |
6760 | not backed by breakpoints always have a zero valued location | |
6761 | address and we don't want to mark breakpoints of any of these types | |
6762 | to be a duplicate of an actual breakpoint location at address | |
6763 | zero. */ | |
e4f237da | 6764 | |
cb1e4e32 PA |
6765 | static bool |
6766 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6767 | { |
cb1e4e32 | 6768 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6769 | } |
6770 | ||
6771 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6772 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6773 | ||
6774 | static int | |
4a64f543 MS |
6775 | watchpoint_locations_match (struct bp_location *loc1, |
6776 | struct bp_location *loc2) | |
2d134ed3 | 6777 | { |
3a5c3e22 PA |
6778 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6779 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6780 | ||
6781 | /* Both of them must exist. */ | |
6782 | gdb_assert (w1 != NULL); | |
6783 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6784 | |
4a64f543 MS |
6785 | /* If the target can evaluate the condition expression in hardware, |
6786 | then we we need to insert both watchpoints even if they are at | |
6787 | the same place. Otherwise the watchpoint will only trigger when | |
6788 | the condition of whichever watchpoint was inserted evaluates to | |
6789 | true, not giving a chance for GDB to check the condition of the | |
6790 | other watchpoint. */ | |
3a5c3e22 | 6791 | if ((w1->cond_exp |
4a64f543 MS |
6792 | && target_can_accel_watchpoint_condition (loc1->address, |
6793 | loc1->length, | |
0cf6dd15 | 6794 | loc1->watchpoint_type, |
4d01a485 | 6795 | w1->cond_exp.get ())) |
3a5c3e22 | 6796 | || (w2->cond_exp |
4a64f543 MS |
6797 | && target_can_accel_watchpoint_condition (loc2->address, |
6798 | loc2->length, | |
0cf6dd15 | 6799 | loc2->watchpoint_type, |
4d01a485 | 6800 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6801 | return 0; |
6802 | ||
85d721b8 PA |
6803 | /* Note that this checks the owner's type, not the location's. In |
6804 | case the target does not support read watchpoints, but does | |
6805 | support access watchpoints, we'll have bp_read_watchpoint | |
6806 | watchpoints with hw_access locations. Those should be considered | |
6807 | duplicates of hw_read locations. The hw_read locations will | |
6808 | become hw_access locations later. */ | |
2d134ed3 PA |
6809 | return (loc1->owner->type == loc2->owner->type |
6810 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6811 | && loc1->address == loc2->address | |
6812 | && loc1->length == loc2->length); | |
e4f237da KB |
6813 | } |
6814 | ||
31e77af2 | 6815 | /* See breakpoint.h. */ |
6c95b8df | 6816 | |
31e77af2 | 6817 | int |
accd0bcd YQ |
6818 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6819 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6820 | { |
f5656ead | 6821 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6822 | || aspace1 == aspace2) |
6823 | && addr1 == addr2); | |
6824 | } | |
6825 | ||
f1310107 TJB |
6826 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6827 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6828 | matches ASPACE2. On targets that have global breakpoints, the address | |
6829 | space doesn't really matter. */ | |
6830 | ||
6831 | static int | |
accd0bcd YQ |
6832 | breakpoint_address_match_range (const address_space *aspace1, |
6833 | CORE_ADDR addr1, | |
6834 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6835 | CORE_ADDR addr2) |
6836 | { | |
f5656ead | 6837 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6838 | || aspace1 == aspace2) |
6839 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6840 | } | |
6841 | ||
6842 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6843 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6844 | matches the breakpoint's address space. On targets that have global | |
6845 | breakpoints, the address space doesn't really matter. */ | |
6846 | ||
6847 | static int | |
6848 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6849 | const address_space *aspace, |
f1310107 TJB |
6850 | CORE_ADDR addr) |
6851 | { | |
6852 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6853 | aspace, addr) | |
6854 | || (bl->length | |
6855 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6856 | bl->address, bl->length, | |
6857 | aspace, addr))); | |
6858 | } | |
6859 | ||
d35ae833 PA |
6860 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6861 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6862 | match happens only if ASPACE matches the breakpoint's address | |
6863 | space. On targets that have global breakpoints, the address space | |
6864 | doesn't really matter. */ | |
6865 | ||
6866 | static int | |
6867 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6868 | const address_space *aspace, |
d35ae833 PA |
6869 | CORE_ADDR addr, int len) |
6870 | { | |
6871 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6872 | || bl->pspace->aspace == aspace) | |
6873 | { | |
6874 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6875 | ||
6876 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6877 | return 1; | |
6878 | } | |
6879 | return 0; | |
6880 | } | |
6881 | ||
1e4d1764 YQ |
6882 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6883 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6884 | true, otherwise returns false. */ | |
6885 | ||
6886 | static int | |
6887 | tracepoint_locations_match (struct bp_location *loc1, | |
6888 | struct bp_location *loc2) | |
6889 | { | |
6890 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6891 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6892 | locations at the same address of different tracepoints are regarded as | |
6893 | different locations. */ | |
6894 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6895 | else | |
6896 | return 0; | |
6897 | } | |
6898 | ||
2d134ed3 | 6899 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 6900 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
6901 | the same location. If SW_HW_BPS_MATCH is true, then software |
6902 | breakpoint locations and hardware breakpoint locations match, | |
6903 | otherwise they don't. */ | |
2d134ed3 PA |
6904 | |
6905 | static int | |
7f32a4d5 PA |
6906 | breakpoint_locations_match (struct bp_location *loc1, |
6907 | struct bp_location *loc2, | |
6908 | bool sw_hw_bps_match) | |
2d134ed3 | 6909 | { |
2bdf28a0 JK |
6910 | int hw_point1, hw_point2; |
6911 | ||
6912 | /* Both of them must not be in moribund_locations. */ | |
6913 | gdb_assert (loc1->owner != NULL); | |
6914 | gdb_assert (loc2->owner != NULL); | |
6915 | ||
6916 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6917 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6918 | |
6919 | if (hw_point1 != hw_point2) | |
6920 | return 0; | |
6921 | else if (hw_point1) | |
6922 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6923 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6924 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6925 | else |
7f32a4d5 PA |
6926 | /* We compare bp_location.length in order to cover ranged |
6927 | breakpoints. Keep this in sync with | |
6928 | bp_location_is_less_than. */ | |
f1310107 TJB |
6929 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
6930 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 6931 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 6932 | && loc1->length == loc2->length); |
2d134ed3 PA |
6933 | } |
6934 | ||
76897487 KB |
6935 | static void |
6936 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6937 | int bnum, int have_bnum) | |
6938 | { | |
f63fbe86 MS |
6939 | /* The longest string possibly returned by hex_string_custom |
6940 | is 50 chars. These must be at least that big for safety. */ | |
6941 | char astr1[64]; | |
6942 | char astr2[64]; | |
76897487 | 6943 | |
bb599908 PH |
6944 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6945 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6946 | if (have_bnum) |
8a3fe4f8 | 6947 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6948 | bnum, astr1, astr2); |
6949 | else | |
8a3fe4f8 | 6950 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6951 | } |
6952 | ||
4a64f543 MS |
6953 | /* Adjust a breakpoint's address to account for architectural |
6954 | constraints on breakpoint placement. Return the adjusted address. | |
6955 | Note: Very few targets require this kind of adjustment. For most | |
6956 | targets, this function is simply the identity function. */ | |
76897487 KB |
6957 | |
6958 | static CORE_ADDR | |
a6d9a66e UW |
6959 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6960 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6961 | { |
a0de8c21 YQ |
6962 | if (bptype == bp_watchpoint |
6963 | || bptype == bp_hardware_watchpoint | |
6964 | || bptype == bp_read_watchpoint | |
6965 | || bptype == bp_access_watchpoint | |
6966 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6967 | { |
6968 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6969 | have their addresses modified. */ | |
6970 | return bpaddr; | |
6971 | } | |
7c16b83e PA |
6972 | else if (bptype == bp_single_step) |
6973 | { | |
6974 | /* Single-step breakpoints should not have their addresses | |
6975 | modified. If there's any architectural constrain that | |
6976 | applies to this address, then it should have already been | |
6977 | taken into account when the breakpoint was created in the | |
6978 | first place. If we didn't do this, stepping through e.g., | |
6979 | Thumb-2 IT blocks would break. */ | |
6980 | return bpaddr; | |
6981 | } | |
76897487 KB |
6982 | else |
6983 | { | |
a0de8c21 YQ |
6984 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6985 | ||
6986 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6987 | { | |
6988 | /* Some targets have architectural constraints on the placement | |
6989 | of breakpoint instructions. Obtain the adjusted address. */ | |
6990 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6991 | } | |
76897487 | 6992 | |
a0de8c21 | 6993 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6994 | |
6995 | /* An adjusted breakpoint address can significantly alter | |
6996 | a user's expectations. Print a warning if an adjustment | |
6997 | is required. */ | |
6998 | if (adjusted_bpaddr != bpaddr) | |
6999 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7000 | ||
7001 | return adjusted_bpaddr; | |
7002 | } | |
7003 | } | |
7004 | ||
cb1e4e32 PA |
7005 | static bp_loc_type |
7006 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7007 | { |
cb1e4e32 | 7008 | switch (type) |
e049a4b5 DJ |
7009 | { |
7010 | case bp_breakpoint: | |
7c16b83e | 7011 | case bp_single_step: |
e049a4b5 DJ |
7012 | case bp_until: |
7013 | case bp_finish: | |
7014 | case bp_longjmp: | |
7015 | case bp_longjmp_resume: | |
e2e4d78b | 7016 | case bp_longjmp_call_dummy: |
186c406b TT |
7017 | case bp_exception: |
7018 | case bp_exception_resume: | |
e049a4b5 | 7019 | case bp_step_resume: |
2c03e5be | 7020 | case bp_hp_step_resume: |
e049a4b5 DJ |
7021 | case bp_watchpoint_scope: |
7022 | case bp_call_dummy: | |
aa7d318d | 7023 | case bp_std_terminate: |
e049a4b5 DJ |
7024 | case bp_shlib_event: |
7025 | case bp_thread_event: | |
7026 | case bp_overlay_event: | |
4efc6507 | 7027 | case bp_jit_event: |
0fd8e87f | 7028 | case bp_longjmp_master: |
aa7d318d | 7029 | case bp_std_terminate_master: |
186c406b | 7030 | case bp_exception_master: |
0e30163f JK |
7031 | case bp_gnu_ifunc_resolver: |
7032 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7033 | case bp_dprintf: |
cb1e4e32 | 7034 | return bp_loc_software_breakpoint; |
e049a4b5 | 7035 | case bp_hardware_breakpoint: |
cb1e4e32 | 7036 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7037 | case bp_hardware_watchpoint: |
7038 | case bp_read_watchpoint: | |
7039 | case bp_access_watchpoint: | |
cb1e4e32 | 7040 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7041 | case bp_watchpoint: |
ce78b96d | 7042 | case bp_catchpoint: |
15c3d785 PA |
7043 | case bp_tracepoint: |
7044 | case bp_fast_tracepoint: | |
0fb4aa4b | 7045 | case bp_static_tracepoint: |
cb1e4e32 | 7046 | return bp_loc_other; |
e049a4b5 | 7047 | default: |
e2e0b3e5 | 7048 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 7049 | } |
cb1e4e32 PA |
7050 | } |
7051 | ||
7052 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7053 | { | |
7054 | this->owner = owner; | |
7055 | this->cond_bytecode = NULL; | |
7056 | this->shlib_disabled = 0; | |
7057 | this->enabled = 1; | |
b5fa468f | 7058 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7059 | |
7060 | this->loc_type = type; | |
e049a4b5 | 7061 | |
cb1e4e32 PA |
7062 | if (this->loc_type == bp_loc_software_breakpoint |
7063 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7064 | mark_breakpoint_location_modified (this); | |
7065 | ||
7066 | this->refc = 1; | |
7067 | } | |
7068 | ||
7069 | bp_location::bp_location (breakpoint *owner) | |
7070 | : bp_location::bp_location (owner, | |
7071 | bp_location_from_bp_type (owner->type)) | |
7072 | { | |
28010a5d PA |
7073 | } |
7074 | ||
7075 | /* Allocate a struct bp_location. */ | |
7076 | ||
7077 | static struct bp_location * | |
7078 | allocate_bp_location (struct breakpoint *bpt) | |
7079 | { | |
348d480f PA |
7080 | return bpt->ops->allocate_location (bpt); |
7081 | } | |
7cc221ef | 7082 | |
f431efe5 PA |
7083 | static void |
7084 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7085 | { |
4d01a485 | 7086 | delete loc; |
fe3f5fa8 VP |
7087 | } |
7088 | ||
f431efe5 PA |
7089 | /* Increment reference count. */ |
7090 | ||
7091 | static void | |
7092 | incref_bp_location (struct bp_location *bl) | |
7093 | { | |
7094 | ++bl->refc; | |
7095 | } | |
7096 | ||
7097 | /* Decrement reference count. If the reference count reaches 0, | |
7098 | destroy the bp_location. Sets *BLP to NULL. */ | |
7099 | ||
7100 | static void | |
7101 | decref_bp_location (struct bp_location **blp) | |
7102 | { | |
0807b50c PA |
7103 | gdb_assert ((*blp)->refc > 0); |
7104 | ||
f431efe5 PA |
7105 | if (--(*blp)->refc == 0) |
7106 | free_bp_location (*blp); | |
7107 | *blp = NULL; | |
7108 | } | |
7109 | ||
346774a9 | 7110 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7111 | |
b270e6f9 TT |
7112 | static breakpoint * |
7113 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7114 | { |
346774a9 | 7115 | struct breakpoint *b1; |
b270e6f9 | 7116 | struct breakpoint *result = b.get (); |
c906108c | 7117 | |
346774a9 PA |
7118 | /* Add this breakpoint to the end of the chain so that a list of |
7119 | breakpoints will come out in order of increasing numbers. */ | |
7120 | ||
7121 | b1 = breakpoint_chain; | |
7122 | if (b1 == 0) | |
b270e6f9 | 7123 | breakpoint_chain = b.release (); |
346774a9 PA |
7124 | else |
7125 | { | |
7126 | while (b1->next) | |
7127 | b1 = b1->next; | |
b270e6f9 | 7128 | b1->next = b.release (); |
346774a9 | 7129 | } |
b270e6f9 TT |
7130 | |
7131 | return result; | |
346774a9 PA |
7132 | } |
7133 | ||
7134 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7135 | ||
7136 | static void | |
7137 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7138 | struct gdbarch *gdbarch, | |
28010a5d | 7139 | enum bptype bptype, |
c0a91b2b | 7140 | const struct breakpoint_ops *ops) |
346774a9 | 7141 | { |
348d480f PA |
7142 | gdb_assert (ops != NULL); |
7143 | ||
28010a5d | 7144 | b->ops = ops; |
4d28f7a8 | 7145 | b->type = bptype; |
a6d9a66e | 7146 | b->gdbarch = gdbarch; |
c906108c SS |
7147 | b->language = current_language->la_language; |
7148 | b->input_radix = input_radix; | |
d0fb5eae | 7149 | b->related_breakpoint = b; |
346774a9 PA |
7150 | } |
7151 | ||
7152 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7153 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7154 | |
7155 | static struct breakpoint * | |
7156 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7157 | enum bptype bptype, |
c0a91b2b | 7158 | const struct breakpoint_ops *ops) |
346774a9 | 7159 | { |
3b0871f4 | 7160 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7161 | |
3b0871f4 | 7162 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7163 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7164 | } |
7165 | ||
0ba852ab | 7166 | /* Initialize loc->function_name. */ |
0e30163f | 7167 | |
0d381245 | 7168 | static void |
0ba852ab | 7169 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7170 | { |
2bdf28a0 JK |
7171 | gdb_assert (loc->owner != NULL); |
7172 | ||
0d381245 | 7173 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7174 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7175 | || is_tracepoint (loc->owner)) |
0d381245 | 7176 | { |
2c02bd72 | 7177 | const char *function_name; |
0e30163f | 7178 | |
3467ec66 | 7179 | if (loc->msymbol != NULL |
f50776aa | 7180 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7181 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7182 | { |
7183 | struct breakpoint *b = loc->owner; | |
7184 | ||
c9d95fa3 | 7185 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7186 | |
7187 | if (b->type == bp_breakpoint && b->loc == loc | |
7188 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7189 | { |
7190 | /* Create only the whole new breakpoint of this type but do not | |
7191 | mess more complicated breakpoints with multiple locations. */ | |
7192 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7193 | /* Remember the resolver's address for use by the return |
7194 | breakpoint. */ | |
3467ec66 | 7195 | loc->related_address = loc->address; |
0e30163f JK |
7196 | } |
7197 | } | |
3467ec66 PA |
7198 | else |
7199 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7200 | |
2c02bd72 DE |
7201 | if (function_name) |
7202 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7203 | } |
7204 | } | |
7205 | ||
a6d9a66e | 7206 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7207 | struct gdbarch * |
a6d9a66e UW |
7208 | get_sal_arch (struct symtab_and_line sal) |
7209 | { | |
7210 | if (sal.section) | |
08feed99 | 7211 | return sal.section->objfile->arch (); |
a6d9a66e | 7212 | if (sal.symtab) |
08feed99 | 7213 | return SYMTAB_OBJFILE (sal.symtab)->arch (); |
a6d9a66e UW |
7214 | |
7215 | return NULL; | |
7216 | } | |
7217 | ||
346774a9 PA |
7218 | /* Low level routine for partially initializing a breakpoint of type |
7219 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7220 | file name, and line number are provided by SAL. |
0d381245 VP |
7221 | |
7222 | It is expected that the caller will complete the initialization of | |
7223 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7224 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7225 | |
346774a9 PA |
7226 | static void |
7227 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7228 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7229 | const struct breakpoint_ops *ops) |
0d381245 | 7230 | { |
28010a5d | 7231 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7232 | |
3742cc8b | 7233 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7234 | |
6c95b8df PA |
7235 | if (bptype != bp_catchpoint) |
7236 | gdb_assert (sal.pspace != NULL); | |
7237 | ||
f8eba3c6 TT |
7238 | /* Store the program space that was used to set the breakpoint, |
7239 | except for ordinary breakpoints, which are independent of the | |
7240 | program space. */ | |
7241 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7242 | b->pspace = sal.pspace; | |
346774a9 | 7243 | } |
c906108c | 7244 | |
346774a9 PA |
7245 | /* set_raw_breakpoint is a low level routine for allocating and |
7246 | partially initializing a breakpoint of type BPTYPE. The newly | |
7247 | created breakpoint's address, section, source file name, and line | |
7248 | number are provided by SAL. The newly created and partially | |
7249 | initialized breakpoint is added to the breakpoint chain and | |
7250 | is also returned as the value of this function. | |
7251 | ||
7252 | It is expected that the caller will complete the initialization of | |
7253 | the newly created breakpoint struct as well as output any status | |
7254 | information regarding the creation of a new breakpoint. In | |
7255 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7256 | number! Care should be taken to not allow an error to occur | |
7257 | prior to completing the initialization of the breakpoint. If this | |
7258 | should happen, a bogus breakpoint will be left on the chain. */ | |
7259 | ||
7260 | struct breakpoint * | |
7261 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7262 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7263 | const struct breakpoint_ops *ops) |
346774a9 | 7264 | { |
3b0871f4 | 7265 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7266 | |
3b0871f4 | 7267 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7268 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7269 | } |
7270 | ||
53a5351d | 7271 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7272 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7273 | initiated the operation. */ | |
c906108c SS |
7274 | |
7275 | void | |
186c406b | 7276 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7277 | { |
35df4500 | 7278 | struct breakpoint *b, *b_tmp; |
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. */ | |
35df4500 | 7285 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
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 | { |
35df4500 | 7307 | struct breakpoint *b, *b_tmp; |
c906108c | 7308 | |
35df4500 | 7309 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7310 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7311 | { |
7312 | if (b->thread == thread) | |
7313 | delete_breakpoint (b); | |
7314 | } | |
c906108c SS |
7315 | } |
7316 | ||
f59f708a PA |
7317 | void |
7318 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7319 | { | |
7320 | struct breakpoint *b, *b_tmp; | |
7321 | ||
7322 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7323 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7324 | { | |
7325 | if (b->thread == thread) | |
7326 | b->disposition = disp_del_at_next_stop; | |
7327 | } | |
7328 | } | |
7329 | ||
e2e4d78b JK |
7330 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7331 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7332 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7333 | breakpoints. */ | |
7334 | ||
7335 | struct breakpoint * | |
7336 | set_longjmp_breakpoint_for_call_dummy (void) | |
7337 | { | |
7338 | struct breakpoint *b, *retval = NULL; | |
7339 | ||
7340 | ALL_BREAKPOINTS (b) | |
7341 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7342 | { | |
7343 | struct breakpoint *new_b; | |
7344 | ||
7345 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7346 | &momentary_breakpoint_ops, |
7347 | 1); | |
00431a78 | 7348 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7349 | |
7350 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7351 | ||
7352 | gdb_assert (new_b->related_breakpoint == new_b); | |
7353 | if (retval == NULL) | |
7354 | retval = new_b; | |
7355 | new_b->related_breakpoint = retval; | |
7356 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7357 | retval = retval->related_breakpoint; | |
7358 | retval->related_breakpoint = new_b; | |
7359 | } | |
7360 | ||
7361 | return retval; | |
7362 | } | |
7363 | ||
7364 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7365 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7366 | stack. |
7367 | ||
7368 | You should call this function only at places where it is safe to currently | |
7369 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7370 | frames. */ | |
7371 | ||
7372 | void | |
b67a2c6f | 7373 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7374 | { |
7375 | struct breakpoint *b, *b_tmp; | |
7376 | ||
7377 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7378 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7379 | { |
7380 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7381 | ||
7382 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7383 | dummy_b = dummy_b->related_breakpoint; | |
7384 | if (dummy_b->type != bp_call_dummy | |
7385 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7386 | continue; | |
7387 | ||
00431a78 | 7388 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7389 | |
7390 | while (b->related_breakpoint != b) | |
7391 | { | |
7392 | if (b_tmp == b->related_breakpoint) | |
7393 | b_tmp = b->related_breakpoint->next; | |
7394 | delete_breakpoint (b->related_breakpoint); | |
7395 | } | |
7396 | delete_breakpoint (b); | |
7397 | } | |
7398 | } | |
7399 | ||
1900040c MS |
7400 | void |
7401 | enable_overlay_breakpoints (void) | |
7402 | { | |
52f0bd74 | 7403 | struct breakpoint *b; |
1900040c MS |
7404 | |
7405 | ALL_BREAKPOINTS (b) | |
7406 | if (b->type == bp_overlay_event) | |
7407 | { | |
7408 | b->enable_state = bp_enabled; | |
44702360 | 7409 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7410 | overlay_events_enabled = 1; |
1900040c MS |
7411 | } |
7412 | } | |
7413 | ||
7414 | void | |
7415 | disable_overlay_breakpoints (void) | |
7416 | { | |
52f0bd74 | 7417 | struct breakpoint *b; |
1900040c MS |
7418 | |
7419 | ALL_BREAKPOINTS (b) | |
7420 | if (b->type == bp_overlay_event) | |
7421 | { | |
7422 | b->enable_state = bp_disabled; | |
44702360 | 7423 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7424 | overlay_events_enabled = 0; |
1900040c MS |
7425 | } |
7426 | } | |
7427 | ||
aa7d318d TT |
7428 | /* Set an active std::terminate breakpoint for each std::terminate |
7429 | master breakpoint. */ | |
7430 | void | |
7431 | set_std_terminate_breakpoint (void) | |
7432 | { | |
35df4500 | 7433 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7434 | |
35df4500 | 7435 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7436 | if (b->pspace == current_program_space |
7437 | && b->type == bp_std_terminate_master) | |
7438 | { | |
06edf0c0 | 7439 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7440 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7441 | } |
7442 | } | |
7443 | ||
7444 | /* Delete all the std::terminate breakpoints. */ | |
7445 | void | |
7446 | delete_std_terminate_breakpoint (void) | |
7447 | { | |
35df4500 | 7448 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7449 | |
35df4500 | 7450 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7451 | if (b->type == bp_std_terminate) |
7452 | delete_breakpoint (b); | |
7453 | } | |
7454 | ||
c4093a6a | 7455 | struct breakpoint * |
a6d9a66e | 7456 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7457 | { |
7458 | struct breakpoint *b; | |
c4093a6a | 7459 | |
06edf0c0 PA |
7460 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7461 | &internal_breakpoint_ops); | |
7462 | ||
b5de0fa7 | 7463 | b->enable_state = bp_enabled; |
f00aae0f | 7464 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7465 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7466 | |
44702360 | 7467 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7468 | |
c4093a6a JM |
7469 | return b; |
7470 | } | |
7471 | ||
0101ce28 JJ |
7472 | struct lang_and_radix |
7473 | { | |
7474 | enum language lang; | |
7475 | int radix; | |
7476 | }; | |
7477 | ||
4efc6507 DE |
7478 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7479 | ||
7480 | struct breakpoint * | |
7481 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7482 | { | |
2a7f3dff PA |
7483 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7484 | &internal_breakpoint_ops); | |
4efc6507 | 7485 | } |
0101ce28 | 7486 | |
03673fc7 PP |
7487 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7488 | ||
7489 | void | |
7490 | remove_jit_event_breakpoints (void) | |
7491 | { | |
7492 | struct breakpoint *b, *b_tmp; | |
7493 | ||
7494 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7495 | if (b->type == bp_jit_event | |
7496 | && b->loc->pspace == current_program_space) | |
7497 | delete_breakpoint (b); | |
7498 | } | |
7499 | ||
cae688ec JJ |
7500 | void |
7501 | remove_solib_event_breakpoints (void) | |
7502 | { | |
35df4500 | 7503 | struct breakpoint *b, *b_tmp; |
cae688ec | 7504 | |
35df4500 | 7505 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7506 | if (b->type == bp_shlib_event |
7507 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7508 | delete_breakpoint (b); |
7509 | } | |
7510 | ||
f37f681c PA |
7511 | /* See breakpoint.h. */ |
7512 | ||
7513 | void | |
7514 | remove_solib_event_breakpoints_at_next_stop (void) | |
7515 | { | |
7516 | struct breakpoint *b, *b_tmp; | |
7517 | ||
7518 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7519 | if (b->type == bp_shlib_event | |
7520 | && b->loc->pspace == current_program_space) | |
7521 | b->disposition = disp_del_at_next_stop; | |
7522 | } | |
7523 | ||
04086b45 PA |
7524 | /* Helper for create_solib_event_breakpoint / |
7525 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7526 | INSERT_MODE to pass through to update_global_location_list. */ | |
7527 | ||
7528 | static struct breakpoint * | |
7529 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7530 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7531 | { |
7532 | struct breakpoint *b; | |
7533 | ||
06edf0c0 PA |
7534 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7535 | &internal_breakpoint_ops); | |
04086b45 | 7536 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7537 | return b; |
7538 | } | |
7539 | ||
04086b45 PA |
7540 | struct breakpoint * |
7541 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7542 | { | |
7543 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7544 | } | |
7545 | ||
f37f681c PA |
7546 | /* See breakpoint.h. */ |
7547 | ||
7548 | struct breakpoint * | |
7549 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7550 | { | |
7551 | struct breakpoint *b; | |
7552 | ||
04086b45 PA |
7553 | /* Explicitly tell update_global_location_list to insert |
7554 | locations. */ | |
7555 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7556 | if (!b->loc->inserted) |
7557 | { | |
7558 | delete_breakpoint (b); | |
7559 | return NULL; | |
7560 | } | |
7561 | return b; | |
7562 | } | |
7563 | ||
cae688ec JJ |
7564 | /* Disable any breakpoints that are on code in shared libraries. Only |
7565 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7566 | ||
7567 | void | |
cb851954 | 7568 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7569 | { |
876fa593 | 7570 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7571 | |
876fa593 | 7572 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7573 | { |
2bdf28a0 | 7574 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7575 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7576 | |
4a64f543 MS |
7577 | /* We apply the check to all breakpoints, including disabled for |
7578 | those with loc->duplicate set. This is so that when breakpoint | |
7579 | becomes enabled, or the duplicate is removed, gdb will try to | |
7580 | insert all breakpoints. If we don't set shlib_disabled here, | |
7581 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7582 | if (((b->type == bp_breakpoint) |
508ccb1f | 7583 | || (b->type == bp_jit_event) |
1042e4c0 | 7584 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7585 | || (is_tracepoint (b))) |
6c95b8df | 7586 | && loc->pspace == current_program_space |
0d381245 | 7587 | && !loc->shlib_disabled |
6c95b8df | 7588 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7589 | ) |
0d381245 VP |
7590 | { |
7591 | loc->shlib_disabled = 1; | |
7592 | } | |
cae688ec JJ |
7593 | } |
7594 | } | |
7595 | ||
63644780 NB |
7596 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7597 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7598 | disabled ones can just stay disabled. */ | |
84acb35a | 7599 | |
75149521 | 7600 | static void |
84acb35a JJ |
7601 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7602 | { | |
876fa593 | 7603 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7604 | int disabled_shlib_breaks = 0; |
7605 | ||
876fa593 | 7606 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7607 | { |
2bdf28a0 | 7608 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7609 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7610 | |
1e4d1764 | 7611 | if (solib->pspace == loc->pspace |
e2dd7057 | 7612 | && !loc->shlib_disabled |
1e4d1764 YQ |
7613 | && (((b->type == bp_breakpoint |
7614 | || b->type == bp_jit_event | |
7615 | || b->type == bp_hardware_breakpoint) | |
7616 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7617 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7618 | || is_tracepoint (b)) | |
e2dd7057 | 7619 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7620 | { |
e2dd7057 PP |
7621 | loc->shlib_disabled = 1; |
7622 | /* At this point, we cannot rely on remove_breakpoint | |
7623 | succeeding so we must mark the breakpoint as not inserted | |
7624 | to prevent future errors occurring in remove_breakpoints. */ | |
7625 | loc->inserted = 0; | |
8d3788bd VP |
7626 | |
7627 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7628 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7629 | |
e2dd7057 PP |
7630 | if (!disabled_shlib_breaks) |
7631 | { | |
223ffa71 | 7632 | target_terminal::ours_for_output (); |
3e43a32a MS |
7633 | warning (_("Temporarily disabling breakpoints " |
7634 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7635 | solib->so_name); |
84acb35a | 7636 | } |
e2dd7057 | 7637 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7638 | } |
7639 | } | |
84acb35a JJ |
7640 | } |
7641 | ||
63644780 NB |
7642 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7643 | notification of free_objfile. Only apply to enabled breakpoints, | |
7644 | disabled ones can just stay disabled. */ | |
7645 | ||
7646 | static void | |
7647 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7648 | { | |
7649 | struct breakpoint *b; | |
7650 | ||
7651 | if (objfile == NULL) | |
7652 | return; | |
7653 | ||
d03de421 PA |
7654 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7655 | managed by the user with add-symbol-file/remove-symbol-file. | |
7656 | Similarly to how breakpoints in shared libraries are handled in | |
7657 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7658 | shlib_disabled so they end up uninserted on the next global |
7659 | location list update. Shared libraries not loaded by the user | |
7660 | aren't handled here -- they're already handled in | |
7661 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7662 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7663 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7664 | main objfile). */ | |
7665 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7666 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7667 | return; |
7668 | ||
7669 | ALL_BREAKPOINTS (b) | |
7670 | { | |
7671 | struct bp_location *loc; | |
7672 | int bp_modified = 0; | |
7673 | ||
7674 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7675 | continue; | |
7676 | ||
7677 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7678 | { | |
7679 | CORE_ADDR loc_addr = loc->address; | |
7680 | ||
7681 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7682 | && loc->loc_type != bp_loc_software_breakpoint) | |
7683 | continue; | |
7684 | ||
7685 | if (loc->shlib_disabled != 0) | |
7686 | continue; | |
7687 | ||
7688 | if (objfile->pspace != loc->pspace) | |
7689 | continue; | |
7690 | ||
7691 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7692 | && loc->loc_type != bp_loc_software_breakpoint) | |
7693 | continue; | |
7694 | ||
7695 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7696 | { | |
7697 | loc->shlib_disabled = 1; | |
08351840 PA |
7698 | /* At this point, we don't know whether the object was |
7699 | unmapped from the inferior or not, so leave the | |
7700 | inserted flag alone. We'll handle failure to | |
7701 | uninsert quietly, in case the object was indeed | |
7702 | unmapped. */ | |
63644780 NB |
7703 | |
7704 | mark_breakpoint_location_modified (loc); | |
7705 | ||
7706 | bp_modified = 1; | |
7707 | } | |
7708 | } | |
7709 | ||
7710 | if (bp_modified) | |
76727919 | 7711 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7712 | } |
7713 | } | |
7714 | ||
ce78b96d JB |
7715 | /* FORK & VFORK catchpoints. */ |
7716 | ||
e29a4733 | 7717 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7718 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7719 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7720 | |
c1fc2657 | 7721 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7722 | { |
e29a4733 PA |
7723 | /* Process id of a child process whose forking triggered this |
7724 | catchpoint. This field is only valid immediately after this | |
7725 | catchpoint has triggered. */ | |
7726 | ptid_t forked_inferior_pid; | |
7727 | }; | |
7728 | ||
4a64f543 MS |
7729 | /* Implement the "insert" breakpoint_ops method for fork |
7730 | catchpoints. */ | |
ce78b96d | 7731 | |
77b06cd7 TJB |
7732 | static int |
7733 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7734 | { |
e99b03dc | 7735 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7736 | } |
7737 | ||
4a64f543 MS |
7738 | /* Implement the "remove" breakpoint_ops method for fork |
7739 | catchpoints. */ | |
ce78b96d JB |
7740 | |
7741 | static int | |
73971819 | 7742 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7743 | { |
e99b03dc | 7744 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7745 | } |
7746 | ||
7747 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7748 | catchpoints. */ | |
7749 | ||
7750 | static int | |
f1310107 | 7751 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7752 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7753 | const struct target_waitstatus *ws) |
ce78b96d | 7754 | { |
e29a4733 PA |
7755 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7756 | ||
f90263c1 TT |
7757 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7758 | return 0; | |
7759 | ||
7760 | c->forked_inferior_pid = ws->value.related_pid; | |
7761 | return 1; | |
ce78b96d JB |
7762 | } |
7763 | ||
4a64f543 MS |
7764 | /* Implement the "print_it" breakpoint_ops method for fork |
7765 | catchpoints. */ | |
ce78b96d JB |
7766 | |
7767 | static enum print_stop_action | |
348d480f | 7768 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7769 | { |
36dfb11c | 7770 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7771 | struct breakpoint *b = bs->breakpoint_at; |
7772 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7773 | |
ce78b96d | 7774 | annotate_catchpoint (b->number); |
f303dbd6 | 7775 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7776 | if (b->disposition == disp_del) |
112e8700 | 7777 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7778 | else |
112e8700 SM |
7779 | uiout->text ("Catchpoint "); |
7780 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7781 | { |
112e8700 SM |
7782 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7783 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7784 | } |
381befee | 7785 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7786 | uiout->text (" (forked process "); |
381befee | 7787 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7788 | uiout->text ("), "); |
ce78b96d JB |
7789 | return PRINT_SRC_AND_LOC; |
7790 | } | |
7791 | ||
4a64f543 MS |
7792 | /* Implement the "print_one" breakpoint_ops method for fork |
7793 | catchpoints. */ | |
ce78b96d JB |
7794 | |
7795 | static void | |
a6d9a66e | 7796 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7797 | { |
e29a4733 | 7798 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7799 | struct value_print_options opts; |
79a45e25 | 7800 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7801 | |
7802 | get_user_print_options (&opts); | |
7803 | ||
4a64f543 MS |
7804 | /* Field 4, the address, is omitted (which makes the columns not |
7805 | line up too nicely with the headers, but the effect is relatively | |
7806 | readable). */ | |
79a45b7d | 7807 | if (opts.addressprint) |
112e8700 | 7808 | uiout->field_skip ("addr"); |
ce78b96d | 7809 | annotate_field (5); |
112e8700 | 7810 | uiout->text ("fork"); |
d7e15655 | 7811 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7812 | { |
112e8700 | 7813 | uiout->text (", process "); |
381befee | 7814 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7815 | uiout->spaces (1); |
ce78b96d | 7816 | } |
8ac3646f | 7817 | |
112e8700 SM |
7818 | if (uiout->is_mi_like_p ()) |
7819 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7820 | } |
7821 | ||
7822 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7823 | catchpoints. */ | |
7824 | ||
7825 | static void | |
7826 | print_mention_catch_fork (struct breakpoint *b) | |
7827 | { | |
7828 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7829 | } | |
7830 | ||
6149aea9 PA |
7831 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7832 | catchpoints. */ | |
7833 | ||
7834 | static void | |
7835 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7836 | { | |
7837 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7838 | print_recreate_thread (b, fp); |
6149aea9 PA |
7839 | } |
7840 | ||
ce78b96d JB |
7841 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7842 | ||
2060206e | 7843 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7844 | |
4a64f543 MS |
7845 | /* Implement the "insert" breakpoint_ops method for vfork |
7846 | catchpoints. */ | |
ce78b96d | 7847 | |
77b06cd7 TJB |
7848 | static int |
7849 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7850 | { |
e99b03dc | 7851 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7852 | } |
7853 | ||
4a64f543 MS |
7854 | /* Implement the "remove" breakpoint_ops method for vfork |
7855 | catchpoints. */ | |
ce78b96d JB |
7856 | |
7857 | static int | |
73971819 | 7858 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7859 | { |
e99b03dc | 7860 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7861 | } |
7862 | ||
7863 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7864 | catchpoints. */ | |
7865 | ||
7866 | static int | |
f1310107 | 7867 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7868 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7869 | const struct target_waitstatus *ws) |
ce78b96d | 7870 | { |
e29a4733 PA |
7871 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7872 | ||
f90263c1 TT |
7873 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7874 | return 0; | |
7875 | ||
7876 | c->forked_inferior_pid = ws->value.related_pid; | |
7877 | return 1; | |
ce78b96d JB |
7878 | } |
7879 | ||
4a64f543 MS |
7880 | /* Implement the "print_it" breakpoint_ops method for vfork |
7881 | catchpoints. */ | |
ce78b96d JB |
7882 | |
7883 | static enum print_stop_action | |
348d480f | 7884 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7885 | { |
36dfb11c | 7886 | struct ui_out *uiout = current_uiout; |
348d480f | 7887 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7888 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7889 | ||
ce78b96d | 7890 | annotate_catchpoint (b->number); |
f303dbd6 | 7891 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7892 | if (b->disposition == disp_del) |
112e8700 | 7893 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7894 | else |
112e8700 SM |
7895 | uiout->text ("Catchpoint "); |
7896 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7897 | { |
112e8700 SM |
7898 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7899 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7900 | } |
381befee | 7901 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7902 | uiout->text (" (vforked process "); |
381befee | 7903 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7904 | uiout->text ("), "); |
ce78b96d JB |
7905 | return PRINT_SRC_AND_LOC; |
7906 | } | |
7907 | ||
4a64f543 MS |
7908 | /* Implement the "print_one" breakpoint_ops method for vfork |
7909 | catchpoints. */ | |
ce78b96d JB |
7910 | |
7911 | static void | |
a6d9a66e | 7912 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7913 | { |
e29a4733 | 7914 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7915 | struct value_print_options opts; |
79a45e25 | 7916 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7917 | |
7918 | get_user_print_options (&opts); | |
4a64f543 MS |
7919 | /* Field 4, the address, is omitted (which makes the columns not |
7920 | line up too nicely with the headers, but the effect is relatively | |
7921 | readable). */ | |
79a45b7d | 7922 | if (opts.addressprint) |
112e8700 | 7923 | uiout->field_skip ("addr"); |
ce78b96d | 7924 | annotate_field (5); |
112e8700 | 7925 | uiout->text ("vfork"); |
d7e15655 | 7926 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7927 | { |
112e8700 | 7928 | uiout->text (", process "); |
381befee | 7929 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7930 | uiout->spaces (1); |
ce78b96d | 7931 | } |
8ac3646f | 7932 | |
112e8700 SM |
7933 | if (uiout->is_mi_like_p ()) |
7934 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7935 | } |
7936 | ||
7937 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7938 | catchpoints. */ | |
7939 | ||
7940 | static void | |
7941 | print_mention_catch_vfork (struct breakpoint *b) | |
7942 | { | |
7943 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7944 | } | |
7945 | ||
6149aea9 PA |
7946 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7947 | catchpoints. */ | |
7948 | ||
7949 | static void | |
7950 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7951 | { | |
7952 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7953 | print_recreate_thread (b, fp); |
6149aea9 PA |
7954 | } |
7955 | ||
ce78b96d JB |
7956 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7957 | ||
2060206e | 7958 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7959 | |
edcc5120 | 7960 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7961 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7962 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7963 | ||
c1fc2657 | 7964 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7965 | { |
c1fc2657 | 7966 | ~solib_catchpoint () override; |
edcc5120 TT |
7967 | |
7968 | /* True for "catch load", false for "catch unload". */ | |
b650a282 | 7969 | bool is_load; |
edcc5120 TT |
7970 | |
7971 | /* Regular expression to match, if any. COMPILED is only valid when | |
7972 | REGEX is non-NULL. */ | |
7973 | char *regex; | |
2d7cc5c7 | 7974 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7975 | }; |
7976 | ||
c1fc2657 | 7977 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7978 | { |
c1fc2657 | 7979 | xfree (this->regex); |
edcc5120 TT |
7980 | } |
7981 | ||
7982 | static int | |
7983 | insert_catch_solib (struct bp_location *ignore) | |
7984 | { | |
7985 | return 0; | |
7986 | } | |
7987 | ||
7988 | static int | |
73971819 | 7989 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7990 | { |
7991 | return 0; | |
7992 | } | |
7993 | ||
7994 | static int | |
7995 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7996 | const address_space *aspace, |
edcc5120 TT |
7997 | CORE_ADDR bp_addr, |
7998 | const struct target_waitstatus *ws) | |
7999 | { | |
8000 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8001 | struct breakpoint *other; | |
8002 | ||
8003 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8004 | return 1; | |
8005 | ||
8006 | ALL_BREAKPOINTS (other) | |
8007 | { | |
8008 | struct bp_location *other_bl; | |
8009 | ||
8010 | if (other == bl->owner) | |
8011 | continue; | |
8012 | ||
8013 | if (other->type != bp_shlib_event) | |
8014 | continue; | |
8015 | ||
c1fc2657 | 8016 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
8017 | continue; |
8018 | ||
8019 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8020 | { | |
8021 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8022 | return 1; | |
8023 | } | |
8024 | } | |
8025 | ||
8026 | return 0; | |
8027 | } | |
8028 | ||
8029 | static void | |
8030 | check_status_catch_solib (struct bpstats *bs) | |
8031 | { | |
8032 | struct solib_catchpoint *self | |
8033 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
8034 | |
8035 | if (self->is_load) | |
8036 | { | |
52941706 | 8037 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
8038 | { |
8039 | if (!self->regex | |
2d7cc5c7 | 8040 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8041 | return; |
8042 | } | |
8043 | } | |
8044 | else | |
8045 | { | |
6fb16ce6 | 8046 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8047 | { |
8048 | if (!self->regex | |
6fb16ce6 | 8049 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8050 | return; |
8051 | } | |
8052 | } | |
8053 | ||
8054 | bs->stop = 0; | |
8055 | bs->print_it = print_it_noop; | |
8056 | } | |
8057 | ||
8058 | static enum print_stop_action | |
8059 | print_it_catch_solib (bpstat bs) | |
8060 | { | |
8061 | struct breakpoint *b = bs->breakpoint_at; | |
8062 | struct ui_out *uiout = current_uiout; | |
8063 | ||
8064 | annotate_catchpoint (b->number); | |
f303dbd6 | 8065 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8066 | if (b->disposition == disp_del) |
112e8700 | 8067 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8068 | else |
112e8700 | 8069 | uiout->text ("Catchpoint "); |
381befee | 8070 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8071 | uiout->text ("\n"); |
8072 | if (uiout->is_mi_like_p ()) | |
8073 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8074 | print_solib_event (1); |
8075 | return PRINT_SRC_AND_LOC; | |
8076 | } | |
8077 | ||
8078 | static void | |
8079 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8080 | { | |
8081 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8082 | struct value_print_options opts; | |
8083 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8084 | |
8085 | get_user_print_options (&opts); | |
8086 | /* Field 4, the address, is omitted (which makes the columns not | |
8087 | line up too nicely with the headers, but the effect is relatively | |
8088 | readable). */ | |
8089 | if (opts.addressprint) | |
8090 | { | |
8091 | annotate_field (4); | |
112e8700 | 8092 | uiout->field_skip ("addr"); |
edcc5120 TT |
8093 | } |
8094 | ||
528e1572 | 8095 | std::string msg; |
edcc5120 TT |
8096 | annotate_field (5); |
8097 | if (self->is_load) | |
8098 | { | |
8099 | if (self->regex) | |
528e1572 | 8100 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8101 | else |
528e1572 | 8102 | msg = _("load of library"); |
edcc5120 TT |
8103 | } |
8104 | else | |
8105 | { | |
8106 | if (self->regex) | |
528e1572 | 8107 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8108 | else |
528e1572 | 8109 | msg = _("unload of library"); |
edcc5120 | 8110 | } |
112e8700 | 8111 | uiout->field_string ("what", msg); |
8ac3646f | 8112 | |
112e8700 SM |
8113 | if (uiout->is_mi_like_p ()) |
8114 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8115 | } |
8116 | ||
8117 | static void | |
8118 | print_mention_catch_solib (struct breakpoint *b) | |
8119 | { | |
8120 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8121 | ||
8122 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8123 | self->is_load ? "load" : "unload"); | |
8124 | } | |
8125 | ||
8126 | static void | |
8127 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8128 | { | |
8129 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8130 | ||
8131 | fprintf_unfiltered (fp, "%s %s", | |
8132 | b->disposition == disp_del ? "tcatch" : "catch", | |
8133 | self->is_load ? "load" : "unload"); | |
8134 | if (self->regex) | |
8135 | fprintf_unfiltered (fp, " %s", self->regex); | |
8136 | fprintf_unfiltered (fp, "\n"); | |
8137 | } | |
8138 | ||
8139 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8140 | ||
b650a282 | 8141 | /* See breakpoint.h. */ |
edcc5120 | 8142 | |
91985142 | 8143 | void |
b650a282 | 8144 | add_solib_catchpoint (const char *arg, bool is_load, bool is_temp, bool enabled) |
edcc5120 | 8145 | { |
edcc5120 | 8146 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8147 | |
edcc5120 TT |
8148 | if (!arg) |
8149 | arg = ""; | |
f1735a53 | 8150 | arg = skip_spaces (arg); |
edcc5120 | 8151 | |
36bd8eaa | 8152 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8153 | |
8154 | if (*arg != '\0') | |
8155 | { | |
2d7cc5c7 PA |
8156 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8157 | _("Invalid regexp"))); | |
edcc5120 TT |
8158 | c->regex = xstrdup (arg); |
8159 | } | |
8160 | ||
8161 | c->is_load = is_load; | |
36bd8eaa | 8162 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8163 | &catch_solib_breakpoint_ops); |
8164 | ||
c1fc2657 | 8165 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8166 | |
b270e6f9 | 8167 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8168 | } |
8169 | ||
91985142 MG |
8170 | /* A helper function that does all the work for "catch load" and |
8171 | "catch unload". */ | |
8172 | ||
8173 | static void | |
eb4c3f4a | 8174 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8175 | struct cmd_list_element *command) |
8176 | { | |
91985142 | 8177 | const int enabled = 1; |
b650a282 | 8178 | bool temp = get_cmd_context (command) == CATCH_TEMPORARY; |
91985142 | 8179 | |
b650a282 | 8180 | add_solib_catchpoint (arg, is_load, temp, enabled); |
91985142 MG |
8181 | } |
8182 | ||
edcc5120 | 8183 | static void |
eb4c3f4a | 8184 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8185 | struct cmd_list_element *command) |
8186 | { | |
8187 | catch_load_or_unload (arg, from_tty, 1, command); | |
8188 | } | |
8189 | ||
8190 | static void | |
eb4c3f4a | 8191 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8192 | struct cmd_list_element *command) |
8193 | { | |
8194 | catch_load_or_unload (arg, from_tty, 0, command); | |
8195 | } | |
8196 | ||
b650a282 | 8197 | /* See breakpoint.h. */ |
ce78b96d | 8198 | |
ab04a2af | 8199 | void |
346774a9 | 8200 | init_catchpoint (struct breakpoint *b, |
b650a282 | 8201 | struct gdbarch *gdbarch, bool temp, |
63160a43 | 8202 | const char *cond_string, |
c0a91b2b | 8203 | const struct breakpoint_ops *ops) |
c906108c | 8204 | { |
51abb421 | 8205 | symtab_and_line sal; |
6c95b8df | 8206 | sal.pspace = current_program_space; |
c5aa993b | 8207 | |
28010a5d | 8208 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8209 | |
1b36a34b | 8210 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b650a282 | 8211 | b->disposition = temp ? disp_del : disp_donttouch; |
346774a9 PA |
8212 | } |
8213 | ||
28010a5d | 8214 | void |
b270e6f9 | 8215 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8216 | { |
b270e6f9 | 8217 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8218 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8219 | if (is_tracepoint (b)) |
8220 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8221 | if (!internal) |
8222 | mention (b); | |
76727919 | 8223 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8224 | |
8225 | if (update_gll) | |
44702360 | 8226 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8227 | } |
8228 | ||
9b70b993 | 8229 | static void |
a6d9a66e | 8230 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
b650a282 | 8231 | bool temp, const char *cond_string, |
c0a91b2b | 8232 | const struct breakpoint_ops *ops) |
c906108c | 8233 | { |
b270e6f9 | 8234 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8235 | |
b650a282 | 8236 | init_catchpoint (c.get (), gdbarch, temp, cond_string, ops); |
e29a4733 PA |
8237 | |
8238 | c->forked_inferior_pid = null_ptid; | |
8239 | ||
b270e6f9 | 8240 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8241 | } |
8242 | ||
fe798b75 JB |
8243 | /* Exec catchpoints. */ |
8244 | ||
b4d90040 | 8245 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8246 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8247 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8248 | ||
c1fc2657 | 8249 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8250 | { |
c1fc2657 | 8251 | ~exec_catchpoint () override; |
b4d90040 PA |
8252 | |
8253 | /* Filename of a program whose exec triggered this catchpoint. | |
8254 | This field is only valid immediately after this catchpoint has | |
8255 | triggered. */ | |
8256 | char *exec_pathname; | |
8257 | }; | |
8258 | ||
c1fc2657 | 8259 | /* Exec catchpoint destructor. */ |
b4d90040 | 8260 | |
c1fc2657 | 8261 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8262 | { |
c1fc2657 | 8263 | xfree (this->exec_pathname); |
b4d90040 PA |
8264 | } |
8265 | ||
77b06cd7 TJB |
8266 | static int |
8267 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8268 | { |
e99b03dc | 8269 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8270 | } |
c906108c | 8271 | |
fe798b75 | 8272 | static int |
73971819 | 8273 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8274 | { |
e99b03dc | 8275 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8276 | } |
c906108c | 8277 | |
fe798b75 | 8278 | static int |
f1310107 | 8279 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8280 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8281 | const struct target_waitstatus *ws) |
fe798b75 | 8282 | { |
b4d90040 PA |
8283 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8284 | ||
f90263c1 TT |
8285 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8286 | return 0; | |
8287 | ||
8288 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8289 | return 1; | |
fe798b75 | 8290 | } |
c906108c | 8291 | |
fe798b75 | 8292 | static enum print_stop_action |
348d480f | 8293 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8294 | { |
36dfb11c | 8295 | struct ui_out *uiout = current_uiout; |
348d480f | 8296 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8297 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8298 | ||
fe798b75 | 8299 | annotate_catchpoint (b->number); |
f303dbd6 | 8300 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8301 | if (b->disposition == disp_del) |
112e8700 | 8302 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8303 | else |
112e8700 SM |
8304 | uiout->text ("Catchpoint "); |
8305 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8306 | { |
112e8700 SM |
8307 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8308 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8309 | } |
381befee | 8310 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8311 | uiout->text (" (exec'd "); |
8312 | uiout->field_string ("new-exec", c->exec_pathname); | |
8313 | uiout->text ("), "); | |
36dfb11c | 8314 | |
fe798b75 | 8315 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8316 | } |
8317 | ||
fe798b75 | 8318 | static void |
a6d9a66e | 8319 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8320 | { |
b4d90040 | 8321 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8322 | struct value_print_options opts; |
79a45e25 | 8323 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8324 | |
8325 | get_user_print_options (&opts); | |
8326 | ||
8327 | /* Field 4, the address, is omitted (which makes the columns | |
8328 | not line up too nicely with the headers, but the effect | |
8329 | is relatively readable). */ | |
8330 | if (opts.addressprint) | |
112e8700 | 8331 | uiout->field_skip ("addr"); |
fe798b75 | 8332 | annotate_field (5); |
112e8700 | 8333 | uiout->text ("exec"); |
b4d90040 | 8334 | if (c->exec_pathname != NULL) |
fe798b75 | 8335 | { |
112e8700 SM |
8336 | uiout->text (", program \""); |
8337 | uiout->field_string ("what", c->exec_pathname); | |
8338 | uiout->text ("\" "); | |
fe798b75 | 8339 | } |
8ac3646f | 8340 | |
112e8700 SM |
8341 | if (uiout->is_mi_like_p ()) |
8342 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8343 | } |
8344 | ||
8345 | static void | |
8346 | print_mention_catch_exec (struct breakpoint *b) | |
8347 | { | |
8348 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8349 | } | |
8350 | ||
6149aea9 PA |
8351 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8352 | catchpoints. */ | |
8353 | ||
8354 | static void | |
8355 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8356 | { | |
8357 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8358 | print_recreate_thread (b, fp); |
6149aea9 PA |
8359 | } |
8360 | ||
2060206e | 8361 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8362 | |
c906108c | 8363 | static int |
fba45db2 | 8364 | hw_breakpoint_used_count (void) |
c906108c | 8365 | { |
c906108c | 8366 | int i = 0; |
f1310107 TJB |
8367 | struct breakpoint *b; |
8368 | struct bp_location *bl; | |
c906108c SS |
8369 | |
8370 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8371 | { |
d6b74ac4 | 8372 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8373 | for (bl = b->loc; bl; bl = bl->next) |
8374 | { | |
8375 | /* Special types of hardware breakpoints may use more than | |
8376 | one register. */ | |
348d480f | 8377 | i += b->ops->resources_needed (bl); |
f1310107 | 8378 | } |
c5aa993b | 8379 | } |
c906108c SS |
8380 | |
8381 | return i; | |
8382 | } | |
8383 | ||
a1398e0c PA |
8384 | /* Returns the resources B would use if it were a hardware |
8385 | watchpoint. */ | |
8386 | ||
c906108c | 8387 | static int |
a1398e0c | 8388 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8389 | { |
c906108c | 8390 | int i = 0; |
e09342b5 | 8391 | struct bp_location *bl; |
c906108c | 8392 | |
a1398e0c PA |
8393 | if (!breakpoint_enabled (b)) |
8394 | return 0; | |
8395 | ||
8396 | for (bl = b->loc; bl; bl = bl->next) | |
8397 | { | |
8398 | /* Special types of hardware watchpoints may use more than | |
8399 | one register. */ | |
8400 | i += b->ops->resources_needed (bl); | |
8401 | } | |
8402 | ||
8403 | return i; | |
8404 | } | |
8405 | ||
8406 | /* Returns the sum the used resources of all hardware watchpoints of | |
8407 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8408 | the sum of the used resources of all hardware watchpoints of other | |
8409 | types _not_ TYPE. */ | |
8410 | ||
8411 | static int | |
8412 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8413 | enum bptype type, int *other_type_used) | |
8414 | { | |
8415 | int i = 0; | |
8416 | struct breakpoint *b; | |
8417 | ||
c906108c SS |
8418 | *other_type_used = 0; |
8419 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8420 | { |
a1398e0c PA |
8421 | if (b == except) |
8422 | continue; | |
e09342b5 TJB |
8423 | if (!breakpoint_enabled (b)) |
8424 | continue; | |
8425 | ||
a1398e0c PA |
8426 | if (b->type == type) |
8427 | i += hw_watchpoint_use_count (b); | |
8428 | else if (is_hardware_watchpoint (b)) | |
8429 | *other_type_used = 1; | |
e09342b5 TJB |
8430 | } |
8431 | ||
c906108c SS |
8432 | return i; |
8433 | } | |
8434 | ||
c906108c | 8435 | void |
fba45db2 | 8436 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8437 | { |
c5aa993b | 8438 | struct breakpoint *b; |
c906108c SS |
8439 | |
8440 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8441 | { |
cc60f2e3 | 8442 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8443 | { |
b5de0fa7 | 8444 | b->enable_state = bp_call_disabled; |
44702360 | 8445 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8446 | } |
8447 | } | |
c906108c SS |
8448 | } |
8449 | ||
8450 | void | |
fba45db2 | 8451 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8452 | { |
c5aa993b | 8453 | struct breakpoint *b; |
c906108c SS |
8454 | |
8455 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8456 | { |
cc60f2e3 | 8457 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8458 | { |
b5de0fa7 | 8459 | b->enable_state = bp_enabled; |
44702360 | 8460 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8461 | } |
8462 | } | |
c906108c SS |
8463 | } |
8464 | ||
8bea4e01 UW |
8465 | void |
8466 | disable_breakpoints_before_startup (void) | |
8467 | { | |
6c95b8df | 8468 | current_program_space->executing_startup = 1; |
44702360 | 8469 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8470 | } |
8471 | ||
8472 | void | |
8473 | enable_breakpoints_after_startup (void) | |
8474 | { | |
6c95b8df | 8475 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8476 | breakpoint_re_set (); |
8bea4e01 UW |
8477 | } |
8478 | ||
7c16b83e PA |
8479 | /* Create a new single-step breakpoint for thread THREAD, with no |
8480 | locations. */ | |
c906108c | 8481 | |
7c16b83e PA |
8482 | static struct breakpoint * |
8483 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8484 | { | |
b270e6f9 | 8485 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8486 | |
b270e6f9 | 8487 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8488 | &momentary_breakpoint_ops); |
8489 | ||
8490 | b->disposition = disp_donttouch; | |
8491 | b->frame_id = null_frame_id; | |
8492 | ||
8493 | b->thread = thread; | |
8494 | gdb_assert (b->thread != 0); | |
8495 | ||
b270e6f9 | 8496 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8497 | } |
8498 | ||
8499 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8500 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8501 | frame. */ | |
c906108c | 8502 | |
454dafbd | 8503 | breakpoint_up |
a6d9a66e UW |
8504 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8505 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8506 | { |
52f0bd74 | 8507 | struct breakpoint *b; |
edb3359d | 8508 | |
193facb3 JK |
8509 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8510 | tail-called one. */ | |
8511 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8512 | |
06edf0c0 | 8513 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8514 | b->enable_state = bp_enabled; |
8515 | b->disposition = disp_donttouch; | |
818dd999 | 8516 | b->frame_id = frame_id; |
c906108c | 8517 | |
00431a78 | 8518 | b->thread = inferior_thread ()->global_num; |
c906108c | 8519 | |
44702360 | 8520 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8521 | |
454dafbd | 8522 | return breakpoint_up (b); |
c906108c | 8523 | } |
611c83ae | 8524 | |
06edf0c0 | 8525 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8526 | The new breakpoint will have type TYPE, use OPS as its |
8527 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8528 | |
06edf0c0 PA |
8529 | static struct breakpoint * |
8530 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8531 | enum bptype type, | |
a1aa2221 LM |
8532 | const struct breakpoint_ops *ops, |
8533 | int loc_enabled) | |
e58b0e63 PA |
8534 | { |
8535 | struct breakpoint *copy; | |
8536 | ||
06edf0c0 | 8537 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8538 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8539 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8540 | |
a6d9a66e | 8541 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8542 | copy->loc->requested_address = orig->loc->requested_address; |
8543 | copy->loc->address = orig->loc->address; | |
8544 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8545 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8546 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8547 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8548 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8549 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8550 | copy->frame_id = orig->frame_id; |
8551 | copy->thread = orig->thread; | |
6c95b8df | 8552 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8553 | |
8554 | copy->enable_state = bp_enabled; | |
8555 | copy->disposition = disp_donttouch; | |
8556 | copy->number = internal_breakpoint_number--; | |
8557 | ||
44702360 | 8558 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8559 | return copy; |
8560 | } | |
8561 | ||
06edf0c0 PA |
8562 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8563 | ORIG is NULL. */ | |
8564 | ||
8565 | struct breakpoint * | |
8566 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8567 | { | |
8568 | /* If there's nothing to clone, then return nothing. */ | |
8569 | if (orig == NULL) | |
8570 | return NULL; | |
8571 | ||
a1aa2221 | 8572 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8573 | } |
8574 | ||
454dafbd | 8575 | breakpoint_up |
a6d9a66e UW |
8576 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8577 | enum bptype type) | |
611c83ae PA |
8578 | { |
8579 | struct symtab_and_line sal; | |
8580 | ||
8581 | sal = find_pc_line (pc, 0); | |
8582 | sal.pc = pc; | |
8583 | sal.section = find_pc_overlay (pc); | |
8584 | sal.explicit_pc = 1; | |
8585 | ||
a6d9a66e | 8586 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8587 | } |
c906108c | 8588 | \f |
c5aa993b | 8589 | |
c906108c SS |
8590 | /* Tell the user we have just set a breakpoint B. */ |
8591 | ||
8592 | static void | |
fba45db2 | 8593 | mention (struct breakpoint *b) |
c906108c | 8594 | { |
348d480f | 8595 | b->ops->print_mention (b); |
2d33446d | 8596 | current_uiout->text ("\n"); |
c906108c | 8597 | } |
c906108c | 8598 | \f |
c5aa993b | 8599 | |
5133a315 | 8600 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8601 | |
7f32a4d5 PA |
8602 | /* Handle "set breakpoint auto-hw on". |
8603 | ||
8604 | If the explicitly specified breakpoint type is not hardware | |
8605 | breakpoint, check the memory map to see whether the breakpoint | |
8606 | address is in read-only memory. | |
8607 | ||
8608 | - location type is not hardware breakpoint, memory is read-only. | |
8609 | We change the type of the location to hardware breakpoint. | |
8610 | ||
8611 | - location type is hardware breakpoint, memory is read-write. This | |
8612 | means we've previously made the location hardware one, but then the | |
8613 | memory map changed, so we undo. | |
8614 | */ | |
8615 | ||
8616 | static void | |
8617 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8618 | { | |
8619 | if (automatic_hardware_breakpoints | |
8620 | && bl->owner->type != bp_hardware_breakpoint | |
8621 | && (bl->loc_type == bp_loc_software_breakpoint | |
8622 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8623 | { | |
8624 | /* When breakpoints are removed, remove_breakpoints will use | |
8625 | location types we've just set here, the only possible problem | |
8626 | is that memory map has changed during running program, but | |
8627 | it's not going to work anyway with current gdb. */ | |
8628 | mem_region *mr = lookup_mem_region (bl->address); | |
8629 | ||
8630 | if (mr != nullptr) | |
8631 | { | |
8632 | enum bp_loc_type new_type; | |
8633 | ||
8634 | if (mr->attrib.mode != MEM_RW) | |
8635 | new_type = bp_loc_hardware_breakpoint; | |
8636 | else | |
8637 | new_type = bp_loc_software_breakpoint; | |
8638 | ||
8639 | if (new_type != bl->loc_type) | |
8640 | { | |
8641 | static bool said = false; | |
8642 | ||
8643 | bl->loc_type = new_type; | |
8644 | if (!said) | |
8645 | { | |
8646 | fprintf_filtered (gdb_stdout, | |
8647 | _("Note: automatically using " | |
8648 | "hardware breakpoints for " | |
8649 | "read-only addresses.\n")); | |
8650 | said = true; | |
8651 | } | |
8652 | } | |
8653 | } | |
8654 | } | |
8655 | } | |
8656 | ||
0d381245 | 8657 | static struct bp_location * |
39d61571 | 8658 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8659 | const struct symtab_and_line *sal) |
8660 | { | |
8661 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8662 | CORE_ADDR adjusted_address; |
8663 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8664 | ||
8665 | if (loc_gdbarch == NULL) | |
8666 | loc_gdbarch = b->gdbarch; | |
8667 | ||
8668 | /* Adjust the breakpoint's address prior to allocating a location. | |
8669 | Once we call allocate_bp_location(), that mostly uninitialized | |
8670 | location will be placed on the location chain. Adjustment of the | |
8671 | breakpoint may cause target_read_memory() to be called and we do | |
8672 | not want its scan of the location chain to find a breakpoint and | |
8673 | location that's only been partially initialized. */ | |
8674 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8675 | sal->pc, b->type); | |
0d381245 | 8676 | |
d30113d4 | 8677 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8678 | loc = allocate_bp_location (b); |
d30113d4 JK |
8679 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8680 | tmp = &((*tmp)->next)) | |
0d381245 | 8681 | ; |
d30113d4 | 8682 | loc->next = *tmp; |
0d381245 | 8683 | *tmp = loc; |
3742cc8b | 8684 | |
0d381245 | 8685 | loc->requested_address = sal->pc; |
3742cc8b | 8686 | loc->address = adjusted_address; |
6c95b8df | 8687 | loc->pspace = sal->pspace; |
935676c9 | 8688 | loc->probe.prob = sal->prob; |
729662a5 | 8689 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8690 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8691 | loc->section = sal->section; |
3742cc8b | 8692 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8693 | loc->line_number = sal->line; |
2f202fde | 8694 | loc->symtab = sal->symtab; |
4a27f119 | 8695 | loc->symbol = sal->symbol; |
3467ec66 PA |
8696 | loc->msymbol = sal->msymbol; |
8697 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8698 | |
0ba852ab | 8699 | set_breakpoint_location_function (loc); |
1a853c52 | 8700 | |
6ae88661 LM |
8701 | /* While by definition, permanent breakpoints are already present in the |
8702 | code, we don't mark the location as inserted. Normally one would expect | |
8703 | that GDB could rely on that breakpoint instruction to stop the program, | |
8704 | thus removing the need to insert its own breakpoint, except that executing | |
8705 | the breakpoint instruction can kill the target instead of reporting a | |
8706 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8707 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8708 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8709 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8710 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8711 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8712 | it manually increments the PC, thus avoiding executing the breakpoint | |
8713 | instruction.) */ | |
1a853c52 | 8714 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8715 | loc->permanent = 1; |
1a853c52 | 8716 | |
0d381245 VP |
8717 | return loc; |
8718 | } | |
514f746b AR |
8719 | \f |
8720 | ||
5133a315 LM |
8721 | /* Return true if LOC is pointing to a permanent breakpoint, |
8722 | return false otherwise. */ | |
1cf4d951 | 8723 | |
5133a315 | 8724 | static bool |
1cf4d951 PA |
8725 | bp_loc_is_permanent (struct bp_location *loc) |
8726 | { | |
514f746b AR |
8727 | gdb_assert (loc != NULL); |
8728 | ||
cb1e4e32 PA |
8729 | /* If we have a non-breakpoint-backed catchpoint or a software |
8730 | watchpoint, just return 0. We should not attempt to read from | |
8731 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8732 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8733 | memory. */ |
cb1e4e32 | 8734 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8735 | return false; |
244558af | 8736 | |
5ed8105e | 8737 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8738 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8739 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8740 | } |
8741 | ||
e7e0cddf SS |
8742 | /* Build a command list for the dprintf corresponding to the current |
8743 | settings of the dprintf style options. */ | |
8744 | ||
8745 | static void | |
8746 | update_dprintf_command_list (struct breakpoint *b) | |
8747 | { | |
8748 | char *dprintf_args = b->extra_string; | |
8749 | char *printf_line = NULL; | |
8750 | ||
8751 | if (!dprintf_args) | |
8752 | return; | |
8753 | ||
8754 | dprintf_args = skip_spaces (dprintf_args); | |
8755 | ||
8756 | /* Allow a comma, as it may have terminated a location, but don't | |
8757 | insist on it. */ | |
8758 | if (*dprintf_args == ',') | |
8759 | ++dprintf_args; | |
8760 | dprintf_args = skip_spaces (dprintf_args); | |
8761 | ||
8762 | if (*dprintf_args != '"') | |
8763 | error (_("Bad format string, missing '\"'.")); | |
8764 | ||
d3ce09f5 | 8765 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8766 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8767 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8768 | { |
8769 | if (!dprintf_function) | |
8770 | error (_("No function supplied for dprintf call")); | |
8771 | ||
8772 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8773 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8774 | dprintf_function, | |
8775 | dprintf_channel, | |
8776 | dprintf_args); | |
8777 | else | |
8778 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8779 | dprintf_function, | |
8780 | dprintf_args); | |
8781 | } | |
d3ce09f5 SS |
8782 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8783 | { | |
8784 | if (target_can_run_breakpoint_commands ()) | |
8785 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8786 | else | |
8787 | { | |
8788 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8789 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8790 | } | |
8791 | } | |
e7e0cddf SS |
8792 | else |
8793 | internal_error (__FILE__, __LINE__, | |
8794 | _("Invalid dprintf style.")); | |
8795 | ||
f28045c2 | 8796 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8797 | |
12973681 TT |
8798 | /* Manufacture a printf sequence. */ |
8799 | struct command_line *printf_cmd_line | |
8800 | = new struct command_line (simple_control, printf_line); | |
8801 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8802 | command_lines_deleter ())); | |
e7e0cddf SS |
8803 | } |
8804 | ||
8805 | /* Update all dprintf commands, making their command lists reflect | |
8806 | current style settings. */ | |
8807 | ||
8808 | static void | |
eb4c3f4a | 8809 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8810 | struct cmd_list_element *c) |
8811 | { | |
8812 | struct breakpoint *b; | |
8813 | ||
8814 | ALL_BREAKPOINTS (b) | |
8815 | { | |
8816 | if (b->type == bp_dprintf) | |
8817 | update_dprintf_command_list (b); | |
8818 | } | |
8819 | } | |
c3f6f71d | 8820 | |
f00aae0f KS |
8821 | /* Create a breakpoint with SAL as location. Use LOCATION |
8822 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8823 | as condition expression. If LOCATION is NULL then create an |
8824 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8825 | |
8826 | static void | |
d9b3f62e | 8827 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8828 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8829 | event_location_up &&location, |
e1e01040 PA |
8830 | gdb::unique_xmalloc_ptr<char> filter, |
8831 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8832 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8833 | enum bptype type, enum bpdisp disposition, |
8834 | int thread, int task, int ignore_count, | |
c0a91b2b | 8835 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8836 | int enabled, int internal, unsigned flags, |
8837 | int display_canonical) | |
018d34a4 | 8838 | { |
0d381245 | 8839 | int i; |
018d34a4 VP |
8840 | |
8841 | if (type == bp_hardware_breakpoint) | |
8842 | { | |
fbbd034e AS |
8843 | int target_resources_ok; |
8844 | ||
8845 | i = hw_breakpoint_used_count (); | |
8846 | target_resources_ok = | |
8847 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8848 | i + 1, 0); |
8849 | if (target_resources_ok == 0) | |
8850 | error (_("No hardware breakpoint support in the target.")); | |
8851 | else if (target_resources_ok < 0) | |
8852 | error (_("Hardware breakpoints used exceeds limit.")); | |
8853 | } | |
8854 | ||
6c5b2ebe | 8855 | gdb_assert (!sals.empty ()); |
6c95b8df | 8856 | |
6c5b2ebe | 8857 | for (const auto &sal : sals) |
0d381245 | 8858 | { |
0d381245 VP |
8859 | struct bp_location *loc; |
8860 | ||
8861 | if (from_tty) | |
5af949e3 UW |
8862 | { |
8863 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8864 | if (!loc_gdbarch) | |
8865 | loc_gdbarch = gdbarch; | |
8866 | ||
8867 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8868 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8869 | } |
0d381245 | 8870 | |
6c5b2ebe | 8871 | if (&sal == &sals[0]) |
0d381245 | 8872 | { |
d9b3f62e | 8873 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8874 | b->thread = thread; |
4a306c9a | 8875 | b->task = task; |
855a6e68 | 8876 | |
e1e01040 PA |
8877 | b->cond_string = cond_string.release (); |
8878 | b->extra_string = extra_string.release (); | |
0d381245 | 8879 | b->ignore_count = ignore_count; |
41447f92 | 8880 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8881 | b->disposition = disposition; |
6c95b8df | 8882 | |
44f238bb PA |
8883 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8884 | b->loc->inserted = 1; | |
8885 | ||
0fb4aa4b PA |
8886 | if (type == bp_static_tracepoint) |
8887 | { | |
d9b3f62e | 8888 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8889 | struct static_tracepoint_marker marker; |
8890 | ||
983af33b | 8891 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8892 | { |
8893 | /* We already know the marker exists, otherwise, we | |
8894 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8895 | const char *p |
8896 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8897 | const char *endp; |
0fb4aa4b | 8898 | |
f1735a53 | 8899 | p = skip_spaces (p); |
0fb4aa4b | 8900 | |
f1735a53 | 8901 | endp = skip_to_space (p); |
0fb4aa4b | 8902 | |
5d9310c4 | 8903 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8904 | |
3e43a32a MS |
8905 | printf_filtered (_("Probed static tracepoint " |
8906 | "marker \"%s\"\n"), | |
5d9310c4 | 8907 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8908 | } |
8909 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8910 | { | |
5d9310c4 | 8911 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8912 | |
3e43a32a MS |
8913 | printf_filtered (_("Probed static tracepoint " |
8914 | "marker \"%s\"\n"), | |
5d9310c4 | 8915 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8916 | } |
8917 | else | |
3e43a32a MS |
8918 | warning (_("Couldn't determine the static " |
8919 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8920 | } |
8921 | ||
0d381245 VP |
8922 | loc = b->loc; |
8923 | } | |
8924 | else | |
018d34a4 | 8925 | { |
39d61571 | 8926 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8927 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8928 | loc->inserted = 1; | |
0d381245 VP |
8929 | } |
8930 | ||
b5fa468f TBA |
8931 | /* Do not set breakpoint locations conditions yet. As locations |
8932 | are inserted, they get sorted based on their addresses. Let | |
8933 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8934 | |
8935 | /* Dynamic printf requires and uses additional arguments on the | |
8936 | command line, otherwise it's an error. */ | |
8937 | if (type == bp_dprintf) | |
8938 | { | |
8939 | if (b->extra_string) | |
8940 | update_dprintf_command_list (b); | |
8941 | else | |
8942 | error (_("Format string required")); | |
8943 | } | |
8944 | else if (b->extra_string) | |
588ae58c | 8945 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8946 | } |
018d34a4 | 8947 | |
b5fa468f TBA |
8948 | |
8949 | /* The order of the locations is now stable. Set the location | |
8950 | condition using the location's number. */ | |
8951 | int loc_num = 1; | |
8952 | for (bp_location *loc = b->loc; loc != nullptr; loc = loc->next) | |
8953 | { | |
8954 | if (b->cond_string != nullptr) | |
8955 | set_breakpoint_location_condition (b->cond_string, loc, b->number, | |
8956 | loc_num); | |
8957 | ||
8958 | ++loc_num; | |
8959 | } | |
8960 | ||
56435ebe | 8961 | b->display_canonical = display_canonical; |
f00aae0f | 8962 | if (location != NULL) |
d28cd78a | 8963 | b->location = std::move (location); |
018d34a4 | 8964 | else |
d28cd78a | 8965 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8966 | b->filter = std::move (filter); |
d9b3f62e | 8967 | } |
018d34a4 | 8968 | |
d9b3f62e PA |
8969 | static void |
8970 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8971 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8972 | event_location_up &&location, |
e1e01040 PA |
8973 | gdb::unique_xmalloc_ptr<char> filter, |
8974 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8975 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8976 | enum bptype type, enum bpdisp disposition, |
8977 | int thread, int task, int ignore_count, | |
c0a91b2b | 8978 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8979 | int enabled, int internal, unsigned flags, |
8980 | int display_canonical) | |
d9b3f62e | 8981 | { |
a5e364af | 8982 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8983 | |
a5e364af | 8984 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8985 | sals, std::move (location), |
e1e01040 PA |
8986 | std::move (filter), |
8987 | std::move (cond_string), | |
8988 | std::move (extra_string), | |
d9b3f62e PA |
8989 | type, disposition, |
8990 | thread, task, ignore_count, | |
8991 | ops, from_tty, | |
44f238bb PA |
8992 | enabled, internal, flags, |
8993 | display_canonical); | |
d9b3f62e | 8994 | |
b270e6f9 | 8995 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8996 | } |
8997 | ||
8998 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8999 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9000 | value. COND_STRING, if not NULL, specified the condition to be | |
9001 | used for all breakpoints. Essentially the only case where | |
9002 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9003 | function. In that case, it's still not possible to specify | |
9004 | separate conditions for different overloaded functions, so | |
9005 | we take just a single condition string. | |
9006 | ||
c3f6f71d | 9007 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9008 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9009 | array contents). If the function fails (error() is called), the |
9010 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9011 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9012 | |
9013 | static void | |
8cdf0e15 | 9014 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9015 | struct linespec_result *canonical, |
e1e01040 PA |
9016 | gdb::unique_xmalloc_ptr<char> cond_string, |
9017 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9018 | enum bptype type, enum bpdisp disposition, |
9019 | int thread, int task, int ignore_count, | |
c0a91b2b | 9020 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9021 | int enabled, int internal, unsigned flags) |
c906108c | 9022 | { |
f8eba3c6 | 9023 | if (canonical->pre_expanded) |
6c5b2ebe | 9024 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9025 | |
6c5b2ebe | 9026 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9027 | { |
f00aae0f | 9028 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9029 | 'break', without arguments. */ |
ffc2605c | 9030 | event_location_up location |
f00aae0f | 9031 | = (canonical->location != NULL |
8e9e35b1 | 9032 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9033 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9034 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9035 | |
6c5b2ebe | 9036 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9037 | std::move (location), |
e1e01040 PA |
9038 | std::move (filter_string), |
9039 | std::move (cond_string), | |
9040 | std::move (extra_string), | |
e7e0cddf | 9041 | type, disposition, |
84f4c1fe | 9042 | thread, task, ignore_count, ops, |
44f238bb | 9043 | from_tty, enabled, internal, flags, |
56435ebe | 9044 | canonical->special_display); |
c3f6f71d | 9045 | } |
c3f6f71d | 9046 | } |
c906108c | 9047 | |
f00aae0f | 9048 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9049 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9050 | addresses found. LOCATION points to the end of the SAL (for |
9051 | linespec locations). | |
9998af43 TJB |
9052 | |
9053 | The array and the line spec strings are allocated on the heap, it is | |
9054 | the caller's responsibility to free them. */ | |
c906108c | 9055 | |
b9362cc7 | 9056 | static void |
626d2320 | 9057 | parse_breakpoint_sals (struct event_location *location, |
58438ac1 | 9058 | struct linespec_result *canonical) |
c3f6f71d | 9059 | { |
f00aae0f KS |
9060 | struct symtab_and_line cursal; |
9061 | ||
9062 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9063 | { | |
a20714ff | 9064 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9065 | |
a20714ff | 9066 | if (spec == NULL) |
f00aae0f KS |
9067 | { |
9068 | /* The last displayed codepoint, if it's valid, is our default | |
9069 | breakpoint address. */ | |
9070 | if (last_displayed_sal_is_valid ()) | |
9071 | { | |
f00aae0f KS |
9072 | /* Set sal's pspace, pc, symtab, and line to the values |
9073 | corresponding to the last call to print_frame_info. | |
9074 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9075 | as the breakpoint line number is inappropriate otherwise. | |
9076 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9077 | symtab_and_line sal = get_last_displayed_sal (); |
9078 | CORE_ADDR pc = sal.pc; | |
9079 | ||
f00aae0f KS |
9080 | sal = find_pc_line (pc, 0); |
9081 | ||
9082 | /* "break" without arguments is equivalent to "break *PC" | |
9083 | where PC is the last displayed codepoint's address. So | |
9084 | make sure to set sal.explicit_pc to prevent GDB from | |
9085 | trying to expand the list of sals to include all other | |
9086 | instances with the same symtab and line. */ | |
9087 | sal.pc = pc; | |
9088 | sal.explicit_pc = 1; | |
9089 | ||
6c5b2ebe PA |
9090 | struct linespec_sals lsal; |
9091 | lsal.sals = {sal}; | |
f00aae0f KS |
9092 | lsal.canonical = NULL; |
9093 | ||
6c5b2ebe | 9094 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9095 | return; |
9096 | } | |
9097 | else | |
9098 | error (_("No default breakpoint address now.")); | |
c906108c | 9099 | } |
c906108c | 9100 | } |
f00aae0f KS |
9101 | |
9102 | /* Force almost all breakpoints to be in terms of the | |
9103 | current_source_symtab (which is decode_line_1's default). | |
9104 | This should produce the results we want almost all of the | |
9105 | time while leaving default_breakpoint_* alone. | |
9106 | ||
9107 | ObjC: However, don't match an Objective-C method name which | |
9108 | may have a '+' or '-' succeeded by a '['. */ | |
9109 | cursal = get_current_source_symtab_and_line (); | |
9110 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9111 | { |
a20714ff | 9112 | const char *spec = NULL; |
cc80f267 | 9113 | |
f00aae0f | 9114 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9115 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9116 | |
f00aae0f | 9117 | if (!cursal.symtab |
a20714ff PA |
9118 | || (spec != NULL |
9119 | && strchr ("+-", spec[0]) != NULL | |
9120 | && spec[1] != '[')) | |
f00aae0f | 9121 | { |
c2f4122d | 9122 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9123 | get_last_displayed_symtab (), |
9124 | get_last_displayed_line (), | |
9125 | canonical, NULL, NULL); | |
9126 | return; | |
9127 | } | |
c906108c | 9128 | } |
f00aae0f | 9129 | |
c2f4122d | 9130 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9131 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9132 | } |
c906108c | 9133 | |
c906108c | 9134 | |
c3f6f71d | 9135 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9136 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9137 | |
b9362cc7 | 9138 | static void |
6c5b2ebe | 9139 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9140 | { |
6c5b2ebe PA |
9141 | for (auto &sal : sals) |
9142 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9143 | } |
9144 | ||
7a697b8d SS |
9145 | /* Fast tracepoints may have restrictions on valid locations. For |
9146 | instance, a fast tracepoint using a jump instead of a trap will | |
9147 | likely have to overwrite more bytes than a trap would, and so can | |
9148 | only be placed where the instruction is longer than the jump, or a | |
9149 | multi-instruction sequence does not have a jump into the middle of | |
9150 | it, etc. */ | |
9151 | ||
9152 | static void | |
9153 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9154 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9155 | { |
6c5b2ebe | 9156 | for (const auto &sal : sals) |
7a697b8d | 9157 | { |
f8eba3c6 TT |
9158 | struct gdbarch *sarch; |
9159 | ||
6c5b2ebe | 9160 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9161 | /* We fall back to GDBARCH if there is no architecture |
9162 | associated with SAL. */ | |
9163 | if (sarch == NULL) | |
9164 | sarch = gdbarch; | |
281d762b TT |
9165 | std::string msg; |
9166 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9167 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9168 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9169 | } |
9170 | } | |
9171 | ||
018d34a4 VP |
9172 | /* Given TOK, a string specification of condition and thread, as |
9173 | accepted by the 'break' command, extract the condition | |
9174 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9175 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9176 | If no condition is found, *COND_STRING is set to NULL. |
9177 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9178 | |
9179 | static void | |
bbc13ae3 | 9180 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9181 | char **cond_string, int *thread, int *task, |
9182 | char **rest) | |
018d34a4 VP |
9183 | { |
9184 | *cond_string = NULL; | |
9185 | *thread = -1; | |
ed1d1739 KS |
9186 | *task = 0; |
9187 | *rest = NULL; | |
733d554a | 9188 | bool force = false; |
ed1d1739 | 9189 | |
018d34a4 VP |
9190 | while (tok && *tok) |
9191 | { | |
bbc13ae3 | 9192 | const char *end_tok; |
018d34a4 | 9193 | int toklen; |
bbc13ae3 KS |
9194 | const char *cond_start = NULL; |
9195 | const char *cond_end = NULL; | |
cc59ec59 | 9196 | |
f1735a53 | 9197 | tok = skip_spaces (tok); |
e7e0cddf SS |
9198 | |
9199 | if ((*tok == '"' || *tok == ',') && rest) | |
9200 | { | |
9201 | *rest = savestring (tok, strlen (tok)); | |
9202 | return; | |
9203 | } | |
9204 | ||
f1735a53 | 9205 | end_tok = skip_to_space (tok); |
d634f2de | 9206 | |
018d34a4 | 9207 | toklen = end_tok - tok; |
d634f2de | 9208 | |
018d34a4 VP |
9209 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9210 | { | |
9211 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
9212 | try |
9213 | { | |
9214 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
9215 | } | |
9216 | catch (const gdb_exception_error &) | |
9217 | { | |
9218 | if (!force) | |
9219 | throw; | |
9220 | else | |
9221 | tok = tok + strlen (tok); | |
9222 | } | |
018d34a4 | 9223 | cond_end = tok; |
d634f2de | 9224 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 | 9225 | } |
733d554a TBA |
9226 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
9227 | { | |
9228 | tok = cond_start = end_tok + 1; | |
9229 | force = true; | |
9230 | } | |
018d34a4 VP |
9231 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
9232 | { | |
5d5658a1 PA |
9233 | const char *tmptok; |
9234 | struct thread_info *thr; | |
d634f2de | 9235 | |
018d34a4 | 9236 | tok = end_tok + 1; |
5d5658a1 | 9237 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9238 | if (tok == tmptok) |
9239 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9240 | *thread = thr->global_num; |
bbc13ae3 | 9241 | tok = tmptok; |
018d34a4 | 9242 | } |
4a306c9a JB |
9243 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9244 | { | |
9245 | char *tmptok; | |
9246 | ||
9247 | tok = end_tok + 1; | |
bbc13ae3 | 9248 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9249 | if (tok == tmptok) |
9250 | error (_("Junk after task keyword.")); | |
9251 | if (!valid_task_id (*task)) | |
b6199126 | 9252 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9253 | tok = tmptok; |
4a306c9a | 9254 | } |
e7e0cddf SS |
9255 | else if (rest) |
9256 | { | |
9257 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9258 | return; |
e7e0cddf | 9259 | } |
018d34a4 VP |
9260 | else |
9261 | error (_("Junk at end of arguments.")); | |
9262 | } | |
9263 | } | |
9264 | ||
b5fa468f TBA |
9265 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
9266 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
9267 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
9268 | for the description of these parameters and INPUT. */ | |
9269 | ||
9270 | static void | |
9271 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
9272 | const char *input, char **cond_string, | |
9273 | int *thread, int *task, char **rest) | |
9274 | { | |
9275 | int num_failures = 0; | |
9276 | for (auto &sal : sals) | |
9277 | { | |
9278 | char *cond = nullptr; | |
9279 | int thread_id = 0; | |
9280 | int task_id = 0; | |
9281 | char *remaining = nullptr; | |
9282 | ||
9283 | /* Here we want to parse 'arg' to separate condition from thread | |
9284 | number. But because parsing happens in a context and the | |
9285 | contexts of sals might be different, try each until there is | |
9286 | success. Finding one successful parse is sufficient for our | |
9287 | goal. When setting the breakpoint we'll re-parse the | |
9288 | condition in the context of each sal. */ | |
9289 | try | |
9290 | { | |
9291 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
9292 | &task_id, &remaining); | |
9293 | *cond_string = cond; | |
9294 | *thread = thread_id; | |
9295 | *task = task_id; | |
9296 | *rest = remaining; | |
9297 | break; | |
9298 | } | |
9299 | catch (const gdb_exception_error &e) | |
9300 | { | |
9301 | num_failures++; | |
9302 | /* If no sal remains, do not continue. */ | |
9303 | if (num_failures == sals.size ()) | |
9304 | throw; | |
9305 | } | |
9306 | } | |
9307 | } | |
9308 | ||
0fb4aa4b PA |
9309 | /* Decode a static tracepoint marker spec. */ |
9310 | ||
6c5b2ebe | 9311 | static std::vector<symtab_and_line> |
f00aae0f | 9312 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9313 | { |
f00aae0f KS |
9314 | const char *p = &(*arg_p)[3]; |
9315 | const char *endp; | |
0fb4aa4b | 9316 | |
f1735a53 | 9317 | p = skip_spaces (p); |
0fb4aa4b | 9318 | |
f1735a53 | 9319 | endp = skip_to_space (p); |
0fb4aa4b | 9320 | |
81b1e71c | 9321 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9322 | |
5d9310c4 SM |
9323 | std::vector<static_tracepoint_marker> markers |
9324 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9325 | if (markers.empty ()) | |
81b1e71c TT |
9326 | error (_("No known static tracepoint marker named %s"), |
9327 | marker_str.c_str ()); | |
0fb4aa4b | 9328 | |
6c5b2ebe | 9329 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9330 | sals.reserve (markers.size ()); |
0fb4aa4b | 9331 | |
5d9310c4 | 9332 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9333 | { |
5d9310c4 SM |
9334 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9335 | sal.pc = marker.address; | |
6c5b2ebe | 9336 | sals.push_back (sal); |
5d9310c4 | 9337 | } |
0fb4aa4b | 9338 | |
0fb4aa4b PA |
9339 | *arg_p = endp; |
9340 | return sals; | |
9341 | } | |
9342 | ||
bac7c5cf GB |
9343 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
9344 | according to IS_TRACEPOINT. */ | |
9345 | ||
9346 | static const struct breakpoint_ops * | |
9347 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
9348 | bool is_tracepoint) | |
9349 | { | |
9350 | if (is_tracepoint) | |
9351 | { | |
9352 | if (location_type == PROBE_LOCATION) | |
9353 | return &tracepoint_probe_breakpoint_ops; | |
9354 | else | |
9355 | return &tracepoint_breakpoint_ops; | |
9356 | } | |
9357 | else | |
9358 | { | |
9359 | if (location_type == PROBE_LOCATION) | |
9360 | return &bkpt_probe_breakpoint_ops; | |
9361 | else | |
9362 | return &bkpt_breakpoint_ops; | |
9363 | } | |
9364 | } | |
9365 | ||
9366 | /* See breakpoint.h. */ | |
9367 | ||
9368 | const struct breakpoint_ops * | |
9369 | breakpoint_ops_for_event_location (const struct event_location *location, | |
9370 | bool is_tracepoint) | |
9371 | { | |
9372 | if (location != nullptr) | |
9373 | return breakpoint_ops_for_event_location_type | |
9374 | (event_location_type (location), is_tracepoint); | |
9375 | return is_tracepoint ? &tracepoint_breakpoint_ops : &bkpt_breakpoint_ops; | |
9376 | } | |
9377 | ||
f00aae0f | 9378 | /* See breakpoint.h. */ |
0101ce28 | 9379 | |
8cdf0e15 VP |
9380 | int |
9381 | create_breakpoint (struct gdbarch *gdbarch, | |
626d2320 | 9382 | struct event_location *location, |
e1e01040 PA |
9383 | const char *cond_string, |
9384 | int thread, const char *extra_string, | |
f00aae0f | 9385 | int parse_extra, |
0fb4aa4b | 9386 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9387 | int ignore_count, |
9388 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9389 | const struct breakpoint_ops *ops, |
44f238bb PA |
9390 | int from_tty, int enabled, int internal, |
9391 | unsigned flags) | |
c3f6f71d | 9392 | { |
7efd8fc2 | 9393 | struct linespec_result canonical; |
0101ce28 | 9394 | int pending = 0; |
4a306c9a | 9395 | int task = 0; |
86b17b60 | 9396 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9397 | |
348d480f PA |
9398 | gdb_assert (ops != NULL); |
9399 | ||
f00aae0f KS |
9400 | /* If extra_string isn't useful, set it to NULL. */ |
9401 | if (extra_string != NULL && *extra_string == '\0') | |
9402 | extra_string = NULL; | |
9403 | ||
a70b8144 | 9404 | try |
b78a6381 | 9405 | { |
f00aae0f | 9406 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9407 | } |
230d2906 | 9408 | catch (const gdb_exception_error &e) |
0101ce28 | 9409 | { |
492d29ea PA |
9410 | /* If caller is interested in rc value from parse, set |
9411 | value. */ | |
9412 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9413 | { |
05ff989b AC |
9414 | /* If pending breakpoint support is turned off, throw |
9415 | error. */ | |
fa8d40ab JJ |
9416 | |
9417 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9418 | throw; |
723a2275 VP |
9419 | |
9420 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9421 | |
05ff989b AC |
9422 | /* If pending breakpoint support is auto query and the user |
9423 | selects no, then simply return the error code. */ | |
059fb39f | 9424 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9425 | && !nquery (_("Make %s pending on future shared library load? "), |
9426 | bptype_string (type_wanted))) | |
fd9b8c24 | 9427 | return 0; |
fa8d40ab | 9428 | |
05ff989b AC |
9429 | /* At this point, either the user was queried about setting |
9430 | a pending breakpoint and selected yes, or pending | |
9431 | breakpoint behavior is on and thus a pending breakpoint | |
9432 | is defaulted on behalf of the user. */ | |
f00aae0f | 9433 | pending = 1; |
0101ce28 | 9434 | } |
492d29ea | 9435 | else |
eedc3f4f | 9436 | throw; |
0101ce28 | 9437 | } |
492d29ea | 9438 | |
6c5b2ebe | 9439 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9440 | return 0; |
c3f6f71d | 9441 | |
c3f6f71d JM |
9442 | /* Resolve all line numbers to PC's and verify that the addresses |
9443 | are ok for the target. */ | |
0101ce28 | 9444 | if (!pending) |
f8eba3c6 | 9445 | { |
6c5b2ebe PA |
9446 | for (auto &lsal : canonical.lsals) |
9447 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9448 | } |
c3f6f71d | 9449 | |
7a697b8d | 9450 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9451 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9452 | { |
6c5b2ebe PA |
9453 | for (const auto &lsal : canonical.lsals) |
9454 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9455 | } |
7a697b8d | 9456 | |
c3f6f71d JM |
9457 | /* Verify that condition can be parsed, before setting any |
9458 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9459 | breakpoint. */ |
0101ce28 | 9460 | if (!pending) |
c3f6f71d | 9461 | { |
e1e01040 PA |
9462 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9463 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9464 | ||
f00aae0f | 9465 | if (parse_extra) |
72b2ff0e | 9466 | { |
0878d0fa | 9467 | char *rest; |
e1e01040 | 9468 | char *cond; |
52d361e1 | 9469 | |
6c5b2ebe | 9470 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9471 | |
b5fa468f TBA |
9472 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
9473 | &cond, &thread, &task, &rest); | |
e1e01040 PA |
9474 | cond_string_copy.reset (cond); |
9475 | extra_string_copy.reset (rest); | |
72b2ff0e | 9476 | } |
2f069f6f | 9477 | else |
72b2ff0e | 9478 | { |
f00aae0f KS |
9479 | if (type_wanted != bp_dprintf |
9480 | && extra_string != NULL && *extra_string != '\0') | |
9481 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9482 | |
9483 | /* Create a private copy of condition string. */ | |
9484 | if (cond_string) | |
e1e01040 | 9485 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9486 | /* Create a private copy of any extra string. */ |
9487 | if (extra_string) | |
e1e01040 | 9488 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9489 | } |
0fb4aa4b | 9490 | |
52d361e1 | 9491 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9492 | std::move (cond_string_copy), |
9493 | std::move (extra_string_copy), | |
9494 | type_wanted, | |
d9b3f62e PA |
9495 | tempflag ? disp_del : disp_donttouch, |
9496 | thread, task, ignore_count, ops, | |
44f238bb | 9497 | from_tty, enabled, internal, flags); |
c906108c | 9498 | } |
0101ce28 JJ |
9499 | else |
9500 | { | |
a5e364af | 9501 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9502 | |
a5e364af | 9503 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9504 | b->location = copy_event_location (location); |
bfccc43c | 9505 | |
f00aae0f KS |
9506 | if (parse_extra) |
9507 | b->cond_string = NULL; | |
e12c7713 MK |
9508 | else |
9509 | { | |
9510 | /* Create a private copy of condition string. */ | |
e1e01040 | 9511 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9512 | b->thread = thread; |
e12c7713 | 9513 | } |
f00aae0f KS |
9514 | |
9515 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9516 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9517 | b->ignore_count = ignore_count; |
0101ce28 | 9518 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9519 | b->condition_not_parsed = 1; |
41447f92 | 9520 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9521 | if ((type_wanted != bp_breakpoint |
9522 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9523 | b->pspace = current_program_space; |
8bea4e01 | 9524 | |
b270e6f9 | 9525 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9526 | } |
9527 | ||
6c5b2ebe | 9528 | if (canonical.lsals.size () > 1) |
95a42b64 | 9529 | { |
3e43a32a MS |
9530 | warning (_("Multiple breakpoints were set.\nUse the " |
9531 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9532 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9533 | } |
9534 | ||
44702360 | 9535 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9536 | |
9537 | return 1; | |
c3f6f71d | 9538 | } |
c906108c | 9539 | |
348d480f | 9540 | /* Set a breakpoint. |
72b2ff0e VP |
9541 | ARG is a string describing breakpoint address, |
9542 | condition, and thread. | |
9543 | FLAG specifies if a breakpoint is hardware on, | |
9544 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9545 | and BP_TEMPFLAG. */ | |
348d480f | 9546 | |
98deb0da | 9547 | static void |
f2fc3015 | 9548 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9549 | { |
72b2ff0e | 9550 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9551 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9552 | ? bp_hardware_breakpoint | |
9553 | : bp_breakpoint); | |
f00aae0f | 9554 | |
ffc2605c | 9555 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
9556 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
9557 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 9558 | |
8cdf0e15 | 9559 | create_breakpoint (get_current_arch (), |
ffc2605c | 9560 | location.get (), |
f00aae0f | 9561 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9562 | tempflag, type_wanted, |
8cdf0e15 VP |
9563 | 0 /* Ignore count */, |
9564 | pending_break_support, | |
55aa24fb | 9565 | ops, |
8cdf0e15 | 9566 | from_tty, |
84f4c1fe | 9567 | 1 /* enabled */, |
44f238bb PA |
9568 | 0 /* internal */, |
9569 | 0); | |
c906108c SS |
9570 | } |
9571 | ||
c906108c SS |
9572 | /* Helper function for break_command_1 and disassemble_command. */ |
9573 | ||
9574 | void | |
fba45db2 | 9575 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9576 | { |
9577 | CORE_ADDR pc; | |
9578 | ||
9579 | if (sal->pc == 0 && sal->symtab != NULL) | |
9580 | { | |
9581 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9582 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9583 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9584 | sal->pc = pc; |
6a048695 | 9585 | |
4a64f543 MS |
9586 | /* If this SAL corresponds to a breakpoint inserted using a line |
9587 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9588 | if (sal->explicit_line) |
059acae7 | 9589 | skip_prologue_sal (sal); |
c906108c SS |
9590 | } |
9591 | ||
9592 | if (sal->section == 0 && sal->symtab != NULL) | |
9593 | { | |
346d1dfe | 9594 | const struct blockvector *bv; |
3977b71f | 9595 | const struct block *b; |
c5aa993b | 9596 | struct symbol *sym; |
c906108c | 9597 | |
43f3e411 DE |
9598 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9599 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9600 | if (bv != NULL) |
9601 | { | |
7f0df278 | 9602 | sym = block_linkage_function (b); |
c906108c SS |
9603 | if (sym != NULL) |
9604 | { | |
eb822aa6 DE |
9605 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9606 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9607 | sym); | |
c906108c SS |
9608 | } |
9609 | else | |
9610 | { | |
4a64f543 MS |
9611 | /* It really is worthwhile to have the section, so we'll |
9612 | just have to look harder. This case can be executed | |
9613 | if we have line numbers but no functions (as can | |
9614 | happen in assembly source). */ | |
c906108c | 9615 | |
5ed8105e | 9616 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9617 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9618 | |
5ed8105e | 9619 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9620 | if (msym.minsym) |
efd66ac6 | 9621 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9622 | } |
9623 | } | |
9624 | } | |
9625 | } | |
9626 | ||
9627 | void | |
0b39b52e | 9628 | break_command (const char *arg, int from_tty) |
c906108c | 9629 | { |
db107f19 | 9630 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9631 | } |
9632 | ||
c906108c | 9633 | void |
0b39b52e | 9634 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9635 | { |
db107f19 | 9636 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9637 | } |
9638 | ||
c906108c | 9639 | static void |
0b39b52e | 9640 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9641 | { |
db107f19 | 9642 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9643 | } |
9644 | ||
9645 | static void | |
0b39b52e | 9646 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9647 | { |
db107f19 | 9648 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9649 | } |
9650 | ||
9651 | static void | |
ee7ddd71 | 9652 | stop_command (const char *arg, int from_tty) |
c906108c | 9653 | { |
a3f17187 | 9654 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9655 | Usage: stop in <function | address>\n\ |
a3f17187 | 9656 | stop at <line>\n")); |
c906108c SS |
9657 | } |
9658 | ||
9659 | static void | |
4495129a | 9660 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9661 | { |
9662 | int badInput = 0; | |
9663 | ||
cafb3438 | 9664 | if (arg == NULL) |
c906108c SS |
9665 | badInput = 1; |
9666 | else if (*arg != '*') | |
9667 | { | |
4495129a | 9668 | const char *argptr = arg; |
c906108c SS |
9669 | int hasColon = 0; |
9670 | ||
4a64f543 | 9671 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9672 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9673 | function/method name. */ |
c906108c | 9674 | while (*argptr && !hasColon) |
c5aa993b JM |
9675 | { |
9676 | hasColon = (*argptr == ':'); | |
9677 | argptr++; | |
9678 | } | |
c906108c SS |
9679 | |
9680 | if (hasColon) | |
c5aa993b | 9681 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9682 | else |
c5aa993b | 9683 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9684 | } |
9685 | ||
9686 | if (badInput) | |
a3f17187 | 9687 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9688 | else |
db107f19 | 9689 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9690 | } |
9691 | ||
9692 | static void | |
4495129a | 9693 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9694 | { |
9695 | int badInput = 0; | |
9696 | ||
cafb3438 | 9697 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9698 | badInput = 1; |
9699 | else | |
9700 | { | |
4495129a | 9701 | const char *argptr = arg; |
c906108c SS |
9702 | int hasColon = 0; |
9703 | ||
4a64f543 MS |
9704 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9705 | it is probably a line number. */ | |
c906108c | 9706 | while (*argptr && !hasColon) |
c5aa993b JM |
9707 | { |
9708 | hasColon = (*argptr == ':'); | |
9709 | argptr++; | |
9710 | } | |
c906108c SS |
9711 | |
9712 | if (hasColon) | |
c5aa993b | 9713 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9714 | else |
c5aa993b | 9715 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9716 | } |
9717 | ||
9718 | if (badInput) | |
65e65158 | 9719 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9720 | else |
db107f19 | 9721 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9722 | } |
9723 | ||
e7e0cddf SS |
9724 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9725 | with a prewired command list consisting of a single output command, | |
9726 | built from extra arguments supplied on the dprintf command | |
9727 | line. */ | |
9728 | ||
da821c7b | 9729 | static void |
0b39b52e | 9730 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9731 | { |
ffc2605c | 9732 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9733 | |
9734 | /* If non-NULL, ARG should have been advanced past the location; | |
9735 | the next character must be ','. */ | |
9736 | if (arg != NULL) | |
9737 | { | |
9738 | if (arg[0] != ',' || arg[1] == '\0') | |
9739 | error (_("Format string required")); | |
9740 | else | |
9741 | { | |
9742 | /* Skip the comma. */ | |
9743 | ++arg; | |
9744 | } | |
9745 | } | |
9746 | ||
e7e0cddf | 9747 | create_breakpoint (get_current_arch (), |
ffc2605c | 9748 | location.get (), |
f00aae0f | 9749 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9750 | 0, bp_dprintf, |
9751 | 0 /* Ignore count */, | |
9752 | pending_break_support, | |
9753 | &dprintf_breakpoint_ops, | |
9754 | from_tty, | |
9755 | 1 /* enabled */, | |
9756 | 0 /* internal */, | |
9757 | 0); | |
9758 | } | |
9759 | ||
d3ce09f5 | 9760 | static void |
0b39b52e | 9761 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9762 | { |
9763 | error (_("May only run agent-printf on the target")); | |
9764 | } | |
9765 | ||
f1310107 TJB |
9766 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9767 | ranged breakpoints. */ | |
9768 | ||
9769 | static int | |
9770 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9771 | const address_space *aspace, |
09ac7c10 TT |
9772 | CORE_ADDR bp_addr, |
9773 | const struct target_waitstatus *ws) | |
f1310107 | 9774 | { |
09ac7c10 | 9775 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9776 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9777 | return 0; |
9778 | ||
f1310107 TJB |
9779 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9780 | bl->length, aspace, bp_addr); | |
9781 | } | |
9782 | ||
9783 | /* Implement the "resources_needed" breakpoint_ops method for | |
9784 | ranged breakpoints. */ | |
9785 | ||
9786 | static int | |
9787 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9788 | { | |
9789 | return target_ranged_break_num_registers (); | |
9790 | } | |
9791 | ||
9792 | /* Implement the "print_it" breakpoint_ops method for | |
9793 | ranged breakpoints. */ | |
9794 | ||
9795 | static enum print_stop_action | |
348d480f | 9796 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9797 | { |
348d480f | 9798 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9799 | struct bp_location *bl = b->loc; |
79a45e25 | 9800 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9801 | |
9802 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9803 | ||
9804 | /* Ranged breakpoints have only one location. */ | |
9805 | gdb_assert (bl && bl->next == NULL); | |
9806 | ||
9807 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9808 | |
9809 | maybe_print_thread_hit_breakpoint (uiout); | |
9810 | ||
f1310107 | 9811 | if (b->disposition == disp_del) |
112e8700 | 9812 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9813 | else |
112e8700 SM |
9814 | uiout->text ("Ranged breakpoint "); |
9815 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9816 | { |
112e8700 | 9817 | uiout->field_string ("reason", |
f1310107 | 9818 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9819 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9820 | } |
381befee | 9821 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 9822 | uiout->text (", "); |
f1310107 TJB |
9823 | |
9824 | return PRINT_SRC_AND_LOC; | |
9825 | } | |
9826 | ||
9827 | /* Implement the "print_one" breakpoint_ops method for | |
9828 | ranged breakpoints. */ | |
9829 | ||
9830 | static void | |
9831 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9832 | struct bp_location **last_loc) | |
9833 | { | |
9834 | struct bp_location *bl = b->loc; | |
9835 | struct value_print_options opts; | |
79a45e25 | 9836 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9837 | |
9838 | /* Ranged breakpoints have only one location. */ | |
9839 | gdb_assert (bl && bl->next == NULL); | |
9840 | ||
9841 | get_user_print_options (&opts); | |
9842 | ||
9843 | if (opts.addressprint) | |
9844 | /* We don't print the address range here, it will be printed later | |
9845 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9846 | uiout->field_skip ("addr"); |
f1310107 TJB |
9847 | annotate_field (5); |
9848 | print_breakpoint_location (b, bl); | |
9849 | *last_loc = bl; | |
9850 | } | |
9851 | ||
9852 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9853 | ranged breakpoints. */ | |
9854 | ||
9855 | static void | |
9856 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9857 | struct ui_out *uiout) | |
9858 | { | |
9859 | CORE_ADDR address_start, address_end; | |
9860 | struct bp_location *bl = b->loc; | |
d7e74731 | 9861 | string_file stb; |
f1310107 TJB |
9862 | |
9863 | gdb_assert (bl); | |
9864 | ||
9865 | address_start = bl->address; | |
9866 | address_end = address_start + bl->length - 1; | |
9867 | ||
112e8700 | 9868 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9869 | stb.printf ("[%s, %s]", |
9870 | print_core_address (bl->gdbarch, address_start), | |
9871 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9872 | uiout->field_stream ("addr", stb); |
9873 | uiout->text ("\n"); | |
f1310107 TJB |
9874 | } |
9875 | ||
9876 | /* Implement the "print_mention" breakpoint_ops method for | |
9877 | ranged breakpoints. */ | |
9878 | ||
9879 | static void | |
9880 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9881 | { | |
9882 | struct bp_location *bl = b->loc; | |
79a45e25 | 9883 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9884 | |
9885 | gdb_assert (bl); | |
9886 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9887 | ||
2d33446d TT |
9888 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9889 | b->number, paddress (bl->gdbarch, bl->address), | |
9890 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9891 | } |
9892 | ||
9893 | /* Implement the "print_recreate" breakpoint_ops method for | |
9894 | ranged breakpoints. */ | |
9895 | ||
9896 | static void | |
9897 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9898 | { | |
f00aae0f | 9899 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9900 | event_location_to_string (b->location.get ()), |
9901 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9902 | print_recreate_thread (b, fp); |
f1310107 TJB |
9903 | } |
9904 | ||
9905 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9906 | ||
2060206e | 9907 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9908 | |
9909 | /* Find the address where the end of the breakpoint range should be | |
9910 | placed, given the SAL of the end of the range. This is so that if | |
9911 | the user provides a line number, the end of the range is set to the | |
9912 | last instruction of the given line. */ | |
9913 | ||
9914 | static CORE_ADDR | |
9915 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9916 | { | |
9917 | CORE_ADDR end; | |
9918 | ||
9919 | /* If the user provided a PC value, use it. Otherwise, | |
9920 | find the address of the end of the given location. */ | |
9921 | if (sal.explicit_pc) | |
9922 | end = sal.pc; | |
9923 | else | |
9924 | { | |
9925 | int ret; | |
9926 | CORE_ADDR start; | |
9927 | ||
9928 | ret = find_line_pc_range (sal, &start, &end); | |
9929 | if (!ret) | |
9930 | error (_("Could not find location of the end of the range.")); | |
9931 | ||
9932 | /* find_line_pc_range returns the start of the next line. */ | |
9933 | end--; | |
9934 | } | |
9935 | ||
9936 | return end; | |
9937 | } | |
9938 | ||
9939 | /* Implement the "break-range" CLI command. */ | |
9940 | ||
9941 | static void | |
0b39b52e | 9942 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9943 | { |
f2fc3015 | 9944 | const char *arg_start; |
f1310107 TJB |
9945 | struct linespec_result canonical_start, canonical_end; |
9946 | int bp_count, can_use_bp, length; | |
9947 | CORE_ADDR end; | |
9948 | struct breakpoint *b; | |
f1310107 TJB |
9949 | |
9950 | /* We don't support software ranged breakpoints. */ | |
9951 | if (target_ranged_break_num_registers () < 0) | |
9952 | error (_("This target does not support hardware ranged breakpoints.")); | |
9953 | ||
9954 | bp_count = hw_breakpoint_used_count (); | |
9955 | bp_count += target_ranged_break_num_registers (); | |
9956 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9957 | bp_count, 0); | |
9958 | if (can_use_bp < 0) | |
9959 | error (_("Hardware breakpoints used exceeds limit.")); | |
9960 | ||
f8eba3c6 | 9961 | arg = skip_spaces (arg); |
f1310107 TJB |
9962 | if (arg == NULL || arg[0] == '\0') |
9963 | error(_("No address range specified.")); | |
9964 | ||
f8eba3c6 | 9965 | arg_start = arg; |
ffc2605c TT |
9966 | event_location_up start_location = string_to_event_location (&arg, |
9967 | current_language); | |
9968 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9969 | |
9970 | if (arg[0] != ',') | |
9971 | error (_("Too few arguments.")); | |
6c5b2ebe | 9972 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9973 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9974 | |
6c5b2ebe | 9975 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9976 | |
6c5b2ebe PA |
9977 | if (canonical_start.lsals.size () > 1 |
9978 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9979 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9980 | ||
6c5b2ebe | 9981 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9982 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9983 | |
9984 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9985 | arg = skip_spaces (arg); |
f1310107 TJB |
9986 | |
9987 | /* Parse the end location. */ | |
9988 | ||
f1310107 TJB |
9989 | arg_start = arg; |
9990 | ||
f8eba3c6 | 9991 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9992 | parse_breakpoint_sals because we need to specify the start location's |
9993 | symtab and line as the default symtab and line for the end of the | |
9994 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9995 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9996 | event_location_up end_location = string_to_event_location (&arg, |
9997 | current_language); | |
9998 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9999 | sal_start.symtab, sal_start.line, |
10000 | &canonical_end, NULL, NULL); | |
10001 | ||
6c5b2ebe | 10002 | if (canonical_end.lsals.empty ()) |
f1310107 | 10003 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 10004 | |
6c5b2ebe PA |
10005 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
10006 | if (canonical_end.lsals.size () > 1 | |
10007 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
10008 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10009 | ||
6c5b2ebe | 10010 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
10011 | |
10012 | end = find_breakpoint_range_end (sal_end); | |
10013 | if (sal_start.pc > end) | |
177b42fe | 10014 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10015 | |
10016 | length = end - sal_start.pc + 1; | |
10017 | if (length < 0) | |
10018 | /* Length overflowed. */ | |
10019 | error (_("Address range too large.")); | |
10020 | else if (length == 1) | |
10021 | { | |
10022 | /* This range is simple enough to be handled by | |
10023 | the `hbreak' command. */ | |
81b1e71c | 10024 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
10025 | |
10026 | return; | |
10027 | } | |
10028 | ||
10029 | /* Now set up the breakpoint. */ | |
10030 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10031 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10032 | set_breakpoint_count (breakpoint_count + 1); |
10033 | b->number = breakpoint_count; | |
10034 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10035 | b->location = std::move (start_location); |
10036 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10037 | b->loc->length = length; |
10038 | ||
f1310107 | 10039 | mention (b); |
76727919 | 10040 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 10041 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10042 | } |
10043 | ||
4a64f543 MS |
10044 | /* Return non-zero if EXP is verified as constant. Returned zero |
10045 | means EXP is variable. Also the constant detection may fail for | |
10046 | some constant expressions and in such case still falsely return | |
10047 | zero. */ | |
2e6e3d9c | 10048 | |
65d79d4b SDJ |
10049 | static int |
10050 | watchpoint_exp_is_const (const struct expression *exp) | |
10051 | { | |
10052 | int i = exp->nelts; | |
10053 | ||
10054 | while (i > 0) | |
10055 | { | |
10056 | int oplenp, argsp; | |
10057 | ||
10058 | /* We are only interested in the descriptor of each element. */ | |
10059 | operator_length (exp, i, &oplenp, &argsp); | |
10060 | i -= oplenp; | |
10061 | ||
10062 | switch (exp->elts[i].opcode) | |
10063 | { | |
10064 | case BINOP_ADD: | |
10065 | case BINOP_SUB: | |
10066 | case BINOP_MUL: | |
10067 | case BINOP_DIV: | |
10068 | case BINOP_REM: | |
10069 | case BINOP_MOD: | |
10070 | case BINOP_LSH: | |
10071 | case BINOP_RSH: | |
10072 | case BINOP_LOGICAL_AND: | |
10073 | case BINOP_LOGICAL_OR: | |
10074 | case BINOP_BITWISE_AND: | |
10075 | case BINOP_BITWISE_IOR: | |
10076 | case BINOP_BITWISE_XOR: | |
10077 | case BINOP_EQUAL: | |
10078 | case BINOP_NOTEQUAL: | |
10079 | case BINOP_LESS: | |
10080 | case BINOP_GTR: | |
10081 | case BINOP_LEQ: | |
10082 | case BINOP_GEQ: | |
10083 | case BINOP_REPEAT: | |
10084 | case BINOP_COMMA: | |
10085 | case BINOP_EXP: | |
10086 | case BINOP_MIN: | |
10087 | case BINOP_MAX: | |
10088 | case BINOP_INTDIV: | |
10089 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10090 | case TERNOP_COND: |
10091 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10092 | |
10093 | case OP_LONG: | |
edd079d9 | 10094 | case OP_FLOAT: |
65d79d4b SDJ |
10095 | case OP_LAST: |
10096 | case OP_COMPLEX: | |
10097 | case OP_STRING: | |
65d79d4b SDJ |
10098 | case OP_ARRAY: |
10099 | case OP_TYPE: | |
608b4967 TT |
10100 | case OP_TYPEOF: |
10101 | case OP_DECLTYPE: | |
6e72ca20 | 10102 | case OP_TYPEID: |
65d79d4b SDJ |
10103 | case OP_NAME: |
10104 | case OP_OBJC_NSSTRING: | |
10105 | ||
10106 | case UNOP_NEG: | |
10107 | case UNOP_LOGICAL_NOT: | |
10108 | case UNOP_COMPLEMENT: | |
10109 | case UNOP_ADDR: | |
10110 | case UNOP_HIGH: | |
aeaa2474 | 10111 | case UNOP_CAST: |
9eaf6705 TT |
10112 | |
10113 | case UNOP_CAST_TYPE: | |
10114 | case UNOP_REINTERPRET_CAST: | |
10115 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10116 | /* Unary, binary and ternary operators: We have to check |
10117 | their operands. If they are constant, then so is the | |
10118 | result of that operation. For instance, if A and B are | |
10119 | determined to be constants, then so is "A + B". | |
10120 | ||
10121 | UNOP_IND is one exception to the rule above, because the | |
10122 | value of *ADDR is not necessarily a constant, even when | |
10123 | ADDR is. */ | |
65d79d4b SDJ |
10124 | break; |
10125 | ||
10126 | case OP_VAR_VALUE: | |
10127 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10128 | |
65d79d4b | 10129 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10130 | possible that a buggy compiler could mark a variable as |
10131 | constant even when it is not, and TYPE_CONST would return | |
10132 | true in this case, while SYMBOL_CLASS wouldn't. | |
10133 | ||
10134 | We also have to check for function symbols because they | |
10135 | are always constant. */ | |
65d79d4b SDJ |
10136 | { |
10137 | struct symbol *s = exp->elts[i + 2].symbol; | |
10138 | ||
10139 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10140 | && SYMBOL_CLASS (s) != LOC_CONST | |
10141 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10142 | return 0; | |
10143 | break; | |
10144 | } | |
10145 | ||
10146 | /* The default action is to return 0 because we are using | |
10147 | the optimistic approach here: If we don't know something, | |
10148 | then it is not a constant. */ | |
10149 | default: | |
10150 | return 0; | |
10151 | } | |
10152 | } | |
10153 | ||
10154 | return 1; | |
10155 | } | |
10156 | ||
c1fc2657 | 10157 | /* Watchpoint destructor. */ |
3a5c3e22 | 10158 | |
c1fc2657 | 10159 | watchpoint::~watchpoint () |
3a5c3e22 | 10160 | { |
c1fc2657 SM |
10161 | xfree (this->exp_string); |
10162 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10163 | } |
10164 | ||
348d480f PA |
10165 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10166 | ||
10167 | static void | |
10168 | re_set_watchpoint (struct breakpoint *b) | |
10169 | { | |
3a5c3e22 PA |
10170 | struct watchpoint *w = (struct watchpoint *) b; |
10171 | ||
348d480f PA |
10172 | /* Watchpoint can be either on expression using entirely global |
10173 | variables, or it can be on local variables. | |
10174 | ||
10175 | Watchpoints of the first kind are never auto-deleted, and even | |
10176 | persist across program restarts. Since they can use variables | |
10177 | from shared libraries, we need to reparse expression as libraries | |
10178 | are loaded and unloaded. | |
10179 | ||
10180 | Watchpoints on local variables can also change meaning as result | |
10181 | of solib event. For example, if a watchpoint uses both a local | |
10182 | and a global variables in expression, it's a local watchpoint, | |
10183 | but unloading of a shared library will make the expression | |
10184 | invalid. This is not a very common use case, but we still | |
10185 | re-evaluate expression, to avoid surprises to the user. | |
10186 | ||
10187 | Note that for local watchpoints, we re-evaluate it only if | |
10188 | watchpoints frame id is still valid. If it's not, it means the | |
10189 | watchpoint is out of scope and will be deleted soon. In fact, | |
10190 | I'm not sure we'll ever be called in this case. | |
10191 | ||
10192 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10193 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10194 | |
3a5c3e22 PA |
10195 | Don't do anything about disabled watchpoints, since they will be |
10196 | reevaluated again when enabled. */ | |
10197 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10198 | } |
10199 | ||
77b06cd7 TJB |
10200 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10201 | ||
10202 | static int | |
10203 | insert_watchpoint (struct bp_location *bl) | |
10204 | { | |
3a5c3e22 PA |
10205 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10206 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10207 | |
10208 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10209 | w->cond_exp.get ()); |
77b06cd7 TJB |
10210 | } |
10211 | ||
10212 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10213 | ||
10214 | static int | |
73971819 | 10215 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10216 | { |
3a5c3e22 PA |
10217 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10218 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10219 | |
10220 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10221 | w->cond_exp.get ()); |
e09342b5 TJB |
10222 | } |
10223 | ||
e09342b5 | 10224 | static int |
348d480f | 10225 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10226 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10227 | const struct target_waitstatus *ws) |
e09342b5 | 10228 | { |
348d480f | 10229 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10230 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10231 | |
348d480f PA |
10232 | /* Continuable hardware watchpoints are treated as non-existent if the |
10233 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10234 | some data address). Otherwise gdb won't stop on a break instruction | |
10235 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10236 | been defined. Also skip watchpoints which we know did not trigger | |
10237 | (did not match the data address). */ | |
10238 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10239 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10240 | return 0; |
9c06b0b4 | 10241 | |
348d480f | 10242 | return 1; |
9c06b0b4 TJB |
10243 | } |
10244 | ||
348d480f PA |
10245 | static void |
10246 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10247 | { |
348d480f | 10248 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10249 | |
348d480f | 10250 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10251 | } |
10252 | ||
10253 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10254 | hardware watchpoints. */ |
9c06b0b4 TJB |
10255 | |
10256 | static int | |
348d480f | 10257 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10258 | { |
3a5c3e22 PA |
10259 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10260 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10261 | |
10262 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10263 | } |
10264 | ||
10265 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10266 | hardware watchpoints. */ |
9c06b0b4 TJB |
10267 | |
10268 | static int | |
348d480f | 10269 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10270 | { |
efa80663 PA |
10271 | /* Read and access watchpoints only work with hardware support. */ |
10272 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10273 | } |
10274 | ||
9c06b0b4 | 10275 | static enum print_stop_action |
348d480f | 10276 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10277 | { |
348d480f | 10278 | struct breakpoint *b; |
348d480f | 10279 | enum print_stop_action result; |
3a5c3e22 | 10280 | struct watchpoint *w; |
79a45e25 | 10281 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10282 | |
10283 | gdb_assert (bs->bp_location_at != NULL); | |
10284 | ||
348d480f | 10285 | b = bs->breakpoint_at; |
3a5c3e22 | 10286 | w = (struct watchpoint *) b; |
348d480f | 10287 | |
f303dbd6 PA |
10288 | annotate_watchpoint (b->number); |
10289 | maybe_print_thread_hit_breakpoint (uiout); | |
10290 | ||
d7e74731 PA |
10291 | string_file stb; |
10292 | ||
76f9c9cf | 10293 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10294 | switch (b->type) |
10295 | { | |
348d480f | 10296 | case bp_watchpoint: |
9c06b0b4 | 10297 | case bp_hardware_watchpoint: |
112e8700 SM |
10298 | if (uiout->is_mi_like_p ()) |
10299 | uiout->field_string | |
10300 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10301 | mention (b); |
76f9c9cf | 10302 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10303 | uiout->text ("\nOld value = "); |
850645cf | 10304 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10305 | uiout->field_stream ("old", stb); |
10306 | uiout->text ("\nNew value = "); | |
850645cf | 10307 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10308 | uiout->field_stream ("new", stb); |
10309 | uiout->text ("\n"); | |
348d480f PA |
10310 | /* More than one watchpoint may have been triggered. */ |
10311 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10312 | break; |
10313 | ||
10314 | case bp_read_watchpoint: | |
112e8700 SM |
10315 | if (uiout->is_mi_like_p ()) |
10316 | uiout->field_string | |
10317 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10318 | mention (b); |
76f9c9cf | 10319 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10320 | uiout->text ("\nValue = "); |
850645cf | 10321 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10322 | uiout->field_stream ("value", stb); |
10323 | uiout->text ("\n"); | |
348d480f | 10324 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10325 | break; |
10326 | ||
10327 | case bp_access_watchpoint: | |
348d480f PA |
10328 | if (bs->old_val != NULL) |
10329 | { | |
112e8700 SM |
10330 | if (uiout->is_mi_like_p ()) |
10331 | uiout->field_string | |
10332 | ("reason", | |
348d480f PA |
10333 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10334 | mention (b); | |
76f9c9cf | 10335 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10336 | uiout->text ("\nOld value = "); |
850645cf | 10337 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10338 | uiout->field_stream ("old", stb); |
10339 | uiout->text ("\nNew value = "); | |
348d480f PA |
10340 | } |
10341 | else | |
10342 | { | |
10343 | mention (b); | |
112e8700 SM |
10344 | if (uiout->is_mi_like_p ()) |
10345 | uiout->field_string | |
10346 | ("reason", | |
348d480f | 10347 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10348 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10349 | uiout->text ("\nValue = "); |
348d480f | 10350 | } |
850645cf | 10351 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10352 | uiout->field_stream ("new", stb); |
10353 | uiout->text ("\n"); | |
348d480f | 10354 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10355 | break; |
10356 | default: | |
348d480f | 10357 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10358 | } |
10359 | ||
348d480f PA |
10360 | return result; |
10361 | } | |
10362 | ||
10363 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10364 | watchpoints. */ | |
10365 | ||
10366 | static void | |
10367 | print_mention_watchpoint (struct breakpoint *b) | |
10368 | { | |
3a5c3e22 | 10369 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10370 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10371 | const char *tuple_name; |
348d480f PA |
10372 | |
10373 | switch (b->type) | |
10374 | { | |
10375 | case bp_watchpoint: | |
112e8700 | 10376 | uiout->text ("Watchpoint "); |
46b9c129 | 10377 | tuple_name = "wpt"; |
348d480f PA |
10378 | break; |
10379 | case bp_hardware_watchpoint: | |
112e8700 | 10380 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10381 | tuple_name = "wpt"; |
348d480f PA |
10382 | break; |
10383 | case bp_read_watchpoint: | |
112e8700 | 10384 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10385 | tuple_name = "hw-rwpt"; |
348d480f PA |
10386 | break; |
10387 | case bp_access_watchpoint: | |
112e8700 | 10388 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10389 | tuple_name = "hw-awpt"; |
348d480f PA |
10390 | break; |
10391 | default: | |
10392 | internal_error (__FILE__, __LINE__, | |
10393 | _("Invalid hardware watchpoint type.")); | |
10394 | } | |
10395 | ||
46b9c129 | 10396 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10397 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10398 | uiout->text (": "); |
10399 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10400 | } |
10401 | ||
10402 | /* Implement the "print_recreate" breakpoint_ops method for | |
10403 | watchpoints. */ | |
10404 | ||
10405 | static void | |
10406 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10407 | { | |
3a5c3e22 PA |
10408 | struct watchpoint *w = (struct watchpoint *) b; |
10409 | ||
348d480f PA |
10410 | switch (b->type) |
10411 | { | |
10412 | case bp_watchpoint: | |
10413 | case bp_hardware_watchpoint: | |
10414 | fprintf_unfiltered (fp, "watch"); | |
10415 | break; | |
10416 | case bp_read_watchpoint: | |
10417 | fprintf_unfiltered (fp, "rwatch"); | |
10418 | break; | |
10419 | case bp_access_watchpoint: | |
10420 | fprintf_unfiltered (fp, "awatch"); | |
10421 | break; | |
10422 | default: | |
10423 | internal_error (__FILE__, __LINE__, | |
10424 | _("Invalid watchpoint type.")); | |
10425 | } | |
10426 | ||
3a5c3e22 | 10427 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10428 | print_recreate_thread (b, fp); |
348d480f PA |
10429 | } |
10430 | ||
427cd150 TT |
10431 | /* Implement the "explains_signal" breakpoint_ops method for |
10432 | watchpoints. */ | |
10433 | ||
47591c29 | 10434 | static int |
427cd150 TT |
10435 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10436 | { | |
10437 | /* A software watchpoint cannot cause a signal other than | |
10438 | GDB_SIGNAL_TRAP. */ | |
10439 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10440 | return 0; |
427cd150 | 10441 | |
47591c29 | 10442 | return 1; |
427cd150 TT |
10443 | } |
10444 | ||
348d480f PA |
10445 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10446 | ||
2060206e | 10447 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10448 | |
10449 | /* Implement the "insert" breakpoint_ops method for | |
10450 | masked hardware watchpoints. */ | |
10451 | ||
10452 | static int | |
10453 | insert_masked_watchpoint (struct bp_location *bl) | |
10454 | { | |
3a5c3e22 PA |
10455 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10456 | ||
10457 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10458 | bl->watchpoint_type); |
10459 | } | |
10460 | ||
10461 | /* Implement the "remove" breakpoint_ops method for | |
10462 | masked hardware watchpoints. */ | |
10463 | ||
10464 | static int | |
73971819 | 10465 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10466 | { |
3a5c3e22 PA |
10467 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10468 | ||
10469 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10470 | bl->watchpoint_type); |
10471 | } | |
10472 | ||
10473 | /* Implement the "resources_needed" breakpoint_ops method for | |
10474 | masked hardware watchpoints. */ | |
10475 | ||
10476 | static int | |
10477 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10478 | { | |
3a5c3e22 PA |
10479 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10480 | ||
10481 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10482 | } |
10483 | ||
10484 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10485 | masked hardware watchpoints. */ | |
10486 | ||
10487 | static int | |
10488 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10489 | { | |
10490 | return 0; | |
10491 | } | |
10492 | ||
10493 | /* Implement the "print_it" breakpoint_ops method for | |
10494 | masked hardware watchpoints. */ | |
10495 | ||
10496 | static enum print_stop_action | |
10497 | print_it_masked_watchpoint (bpstat bs) | |
10498 | { | |
10499 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10500 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10501 | |
10502 | /* Masked watchpoints have only one location. */ | |
10503 | gdb_assert (b->loc && b->loc->next == NULL); | |
10504 | ||
f303dbd6 PA |
10505 | annotate_watchpoint (b->number); |
10506 | maybe_print_thread_hit_breakpoint (uiout); | |
10507 | ||
348d480f PA |
10508 | switch (b->type) |
10509 | { | |
10510 | case bp_hardware_watchpoint: | |
112e8700 SM |
10511 | if (uiout->is_mi_like_p ()) |
10512 | uiout->field_string | |
10513 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10514 | break; |
10515 | ||
10516 | case bp_read_watchpoint: | |
112e8700 SM |
10517 | if (uiout->is_mi_like_p ()) |
10518 | uiout->field_string | |
10519 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10520 | break; |
10521 | ||
10522 | case bp_access_watchpoint: | |
112e8700 SM |
10523 | if (uiout->is_mi_like_p ()) |
10524 | uiout->field_string | |
10525 | ("reason", | |
348d480f PA |
10526 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10527 | break; | |
10528 | default: | |
10529 | internal_error (__FILE__, __LINE__, | |
10530 | _("Invalid hardware watchpoint type.")); | |
10531 | } | |
10532 | ||
10533 | mention (b); | |
112e8700 | 10534 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10535 | Check the underlying instruction at PC for the memory\n\ |
10536 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10537 | uiout->text ("\n"); |
9c06b0b4 TJB |
10538 | |
10539 | /* More than one watchpoint may have been triggered. */ | |
10540 | return PRINT_UNKNOWN; | |
10541 | } | |
10542 | ||
10543 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10544 | masked hardware watchpoints. */ | |
10545 | ||
10546 | static void | |
10547 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10548 | struct ui_out *uiout) | |
10549 | { | |
3a5c3e22 PA |
10550 | struct watchpoint *w = (struct watchpoint *) b; |
10551 | ||
9c06b0b4 TJB |
10552 | /* Masked watchpoints have only one location. */ |
10553 | gdb_assert (b->loc && b->loc->next == NULL); | |
10554 | ||
112e8700 SM |
10555 | uiout->text ("\tmask "); |
10556 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10557 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10558 | } |
10559 | ||
10560 | /* Implement the "print_mention" breakpoint_ops method for | |
10561 | masked hardware watchpoints. */ | |
10562 | ||
10563 | static void | |
10564 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10565 | { | |
3a5c3e22 | 10566 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10567 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10568 | const char *tuple_name; |
9c06b0b4 TJB |
10569 | |
10570 | switch (b->type) | |
10571 | { | |
10572 | case bp_hardware_watchpoint: | |
112e8700 | 10573 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10574 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10575 | break; |
10576 | case bp_read_watchpoint: | |
112e8700 | 10577 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10578 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10579 | break; |
10580 | case bp_access_watchpoint: | |
112e8700 | 10581 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10582 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10583 | break; |
10584 | default: | |
10585 | internal_error (__FILE__, __LINE__, | |
10586 | _("Invalid hardware watchpoint type.")); | |
10587 | } | |
10588 | ||
46b9c129 | 10589 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10590 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10591 | uiout->text (": "); |
10592 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10593 | } |
10594 | ||
10595 | /* Implement the "print_recreate" breakpoint_ops method for | |
10596 | masked hardware watchpoints. */ | |
10597 | ||
10598 | static void | |
10599 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10600 | { | |
3a5c3e22 | 10601 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10602 | |
10603 | switch (b->type) | |
10604 | { | |
10605 | case bp_hardware_watchpoint: | |
10606 | fprintf_unfiltered (fp, "watch"); | |
10607 | break; | |
10608 | case bp_read_watchpoint: | |
10609 | fprintf_unfiltered (fp, "rwatch"); | |
10610 | break; | |
10611 | case bp_access_watchpoint: | |
10612 | fprintf_unfiltered (fp, "awatch"); | |
10613 | break; | |
10614 | default: | |
10615 | internal_error (__FILE__, __LINE__, | |
10616 | _("Invalid hardware watchpoint type.")); | |
10617 | } | |
10618 | ||
53807e9f TT |
10619 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, |
10620 | phex (w->hw_wp_mask, sizeof (CORE_ADDR))); | |
d9b3f62e | 10621 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10622 | } |
10623 | ||
10624 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10625 | ||
2060206e | 10626 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10627 | |
10628 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10629 | ||
f2478a7e | 10630 | static bool |
9c06b0b4 TJB |
10631 | is_masked_watchpoint (const struct breakpoint *b) |
10632 | { | |
10633 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10634 | } | |
10635 | ||
53a5351d JM |
10636 | /* accessflag: hw_write: watch write, |
10637 | hw_read: watch read, | |
10638 | hw_access: watch access (read or write) */ | |
c906108c | 10639 | static void |
bbc13ae3 | 10640 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10641 | int just_location, int internal) |
c906108c | 10642 | { |
c1fc2657 | 10643 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10644 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10645 | struct value *result; |
bb9d5f81 | 10646 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10647 | const char *exp_start = NULL; |
10648 | const char *exp_end = NULL; | |
10649 | const char *tok, *end_tok; | |
9c06b0b4 | 10650 | int toklen = -1; |
bbc13ae3 KS |
10651 | const char *cond_start = NULL; |
10652 | const char *cond_end = NULL; | |
c906108c | 10653 | enum bptype bp_type; |
37e4754d | 10654 | int thread = -1; |
0cf6dd15 | 10655 | int pc = 0; |
9c06b0b4 TJB |
10656 | /* Flag to indicate whether we are going to use masks for |
10657 | the hardware watchpoint. */ | |
10658 | int use_mask = 0; | |
10659 | CORE_ADDR mask = 0; | |
c906108c | 10660 | |
37e4754d LM |
10661 | /* Make sure that we actually have parameters to parse. */ |
10662 | if (arg != NULL && arg[0] != '\0') | |
10663 | { | |
bbc13ae3 KS |
10664 | const char *value_start; |
10665 | ||
10666 | exp_end = arg + strlen (arg); | |
37e4754d | 10667 | |
9c06b0b4 TJB |
10668 | /* Look for "parameter value" pairs at the end |
10669 | of the arguments string. */ | |
bbc13ae3 | 10670 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10671 | { |
10672 | /* Skip whitespace at the end of the argument list. */ | |
10673 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10674 | tok--; | |
10675 | ||
10676 | /* Find the beginning of the last token. | |
10677 | This is the value of the parameter. */ | |
10678 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10679 | tok--; | |
10680 | value_start = tok + 1; | |
10681 | ||
10682 | /* Skip whitespace. */ | |
10683 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10684 | tok--; | |
10685 | ||
10686 | end_tok = tok; | |
10687 | ||
10688 | /* Find the beginning of the second to last token. | |
10689 | This is the parameter itself. */ | |
10690 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10691 | tok--; | |
10692 | tok++; | |
10693 | toklen = end_tok - tok + 1; | |
10694 | ||
61012eef | 10695 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10696 | { |
5d5658a1 | 10697 | struct thread_info *thr; |
9c06b0b4 TJB |
10698 | /* At this point we've found a "thread" token, which means |
10699 | the user is trying to set a watchpoint that triggers | |
10700 | only in a specific thread. */ | |
5d5658a1 | 10701 | const char *endp; |
37e4754d | 10702 | |
9c06b0b4 TJB |
10703 | if (thread != -1) |
10704 | error(_("You can specify only one thread.")); | |
37e4754d | 10705 | |
9c06b0b4 | 10706 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10707 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10708 | |
5d5658a1 | 10709 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10710 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10711 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10712 | |
5d5658a1 | 10713 | thread = thr->global_num; |
9c06b0b4 | 10714 | } |
61012eef | 10715 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10716 | { |
10717 | /* We've found a "mask" token, which means the user wants to | |
10718 | create a hardware watchpoint that is going to have the mask | |
10719 | facility. */ | |
10720 | struct value *mask_value, *mark; | |
37e4754d | 10721 | |
9c06b0b4 TJB |
10722 | if (use_mask) |
10723 | error(_("You can specify only one mask.")); | |
37e4754d | 10724 | |
9c06b0b4 | 10725 | use_mask = just_location = 1; |
37e4754d | 10726 | |
9c06b0b4 TJB |
10727 | mark = value_mark (); |
10728 | mask_value = parse_to_comma_and_eval (&value_start); | |
10729 | mask = value_as_address (mask_value); | |
10730 | value_free_to_mark (mark); | |
10731 | } | |
10732 | else | |
10733 | /* We didn't recognize what we found. We should stop here. */ | |
10734 | break; | |
37e4754d | 10735 | |
9c06b0b4 TJB |
10736 | /* Truncate the string and get rid of the "parameter value" pair before |
10737 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10738 | exp_end = tok; |
9c06b0b4 | 10739 | } |
37e4754d | 10740 | } |
bbc13ae3 KS |
10741 | else |
10742 | exp_end = arg; | |
37e4754d | 10743 | |
bbc13ae3 KS |
10744 | /* Parse the rest of the arguments. From here on out, everything |
10745 | is in terms of a newly allocated string instead of the original | |
10746 | ARG. */ | |
81b1e71c TT |
10747 | std::string expression (arg, exp_end - arg); |
10748 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10749 | innermost_block_tracker tracker; |
10750 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10751 | exp_end = arg; |
fa8a61dc TT |
10752 | /* Remove trailing whitespace from the expression before saving it. |
10753 | This makes the eventual display of the expression string a bit | |
10754 | prettier. */ | |
10755 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10756 | --exp_end; | |
10757 | ||
65d79d4b | 10758 | /* Checking if the expression is not constant. */ |
4d01a485 | 10759 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10760 | { |
10761 | int len; | |
10762 | ||
10763 | len = exp_end - exp_start; | |
10764 | while (len > 0 && isspace (exp_start[len - 1])) | |
10765 | len--; | |
10766 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10767 | } | |
10768 | ||
699bd4cf | 10769 | exp_valid_block = tracker.block (); |
b926417a | 10770 | struct value *mark = value_mark (); |
850645cf TT |
10771 | struct value *val_as_value = nullptr; |
10772 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10773 | just_location); | |
06a64a0b | 10774 | |
850645cf | 10775 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10776 | { |
850645cf TT |
10777 | saved_bitpos = value_bitpos (val_as_value); |
10778 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10779 | } |
10780 | ||
850645cf | 10781 | value_ref_ptr val; |
06a64a0b TT |
10782 | if (just_location) |
10783 | { | |
9c06b0b4 TJB |
10784 | int ret; |
10785 | ||
06a64a0b | 10786 | exp_valid_block = NULL; |
850645cf | 10787 | val = release_value (value_addr (result)); |
06a64a0b | 10788 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10789 | |
10790 | if (use_mask) | |
10791 | { | |
850645cf | 10792 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10793 | mask); |
10794 | if (ret == -1) | |
10795 | error (_("This target does not support masked watchpoints.")); | |
10796 | else if (ret == -2) | |
10797 | error (_("Invalid mask or memory region.")); | |
10798 | } | |
06a64a0b | 10799 | } |
850645cf TT |
10800 | else if (val_as_value != NULL) |
10801 | val = release_value (val_as_value); | |
c906108c | 10802 | |
f1735a53 TT |
10803 | tok = skip_spaces (arg); |
10804 | end_tok = skip_to_space (tok); | |
c906108c SS |
10805 | |
10806 | toklen = end_tok - tok; | |
10807 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10808 | { | |
10809 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10810 | innermost_block_tracker if_tracker; |
10811 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10812 | |
10813 | /* The watchpoint expression may not be local, but the condition | |
10814 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10815 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10816 | |
c906108c SS |
10817 | cond_end = tok; |
10818 | } | |
10819 | if (*tok) | |
8a3fe4f8 | 10820 | error (_("Junk at end of command.")); |
c906108c | 10821 | |
441d7c93 PA |
10822 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10823 | ||
10824 | /* Save this because create_internal_breakpoint below invalidates | |
10825 | 'wp_frame'. */ | |
10826 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10827 | |
10828 | /* If the expression is "local", then set up a "watchpoint scope" | |
10829 | breakpoint at the point where we've left the scope of the watchpoint | |
10830 | expression. Create the scope breakpoint before the watchpoint, so | |
10831 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10832 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10833 | { |
441d7c93 PA |
10834 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10835 | ||
10836 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10837 | { |
441d7c93 PA |
10838 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10839 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10840 | ||
edb3359d | 10841 | scope_breakpoint |
441d7c93 | 10842 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10843 | bp_watchpoint_scope, |
10844 | &momentary_breakpoint_ops); | |
d983da9c | 10845 | |
441d7c93 PA |
10846 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10847 | wp_frame = NULL; | |
10848 | ||
edb3359d | 10849 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10850 | |
edb3359d DJ |
10851 | /* Automatically delete the breakpoint when it hits. */ |
10852 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10853 | |
edb3359d | 10854 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10855 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10856 | |
edb3359d | 10857 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10858 | scope_breakpoint->loc->gdbarch = caller_arch; |
10859 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10860 | scope_breakpoint->loc->address |
a6d9a66e UW |
10861 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10862 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10863 | scope_breakpoint->type); |
10864 | } | |
d983da9c DJ |
10865 | } |
10866 | ||
e8369a73 AB |
10867 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10868 | watchpoints here even if hardware watchpoints are turned off, a call | |
10869 | to update_watchpoint later in this function will cause the type to | |
10870 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10871 | ||
10872 | if (accessflag == hw_read) | |
10873 | bp_type = bp_read_watchpoint; | |
10874 | else if (accessflag == hw_access) | |
10875 | bp_type = bp_access_watchpoint; | |
10876 | else | |
10877 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10878 | |
b270e6f9 | 10879 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10880 | |
348d480f | 10881 | if (use_mask) |
b270e6f9 | 10882 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10883 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10884 | else |
b270e6f9 | 10885 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10886 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10887 | w->thread = thread; |
10888 | w->disposition = disp_donttouch; | |
10889 | w->pspace = current_program_space; | |
b22e99fd | 10890 | w->exp = std::move (exp); |
3a5c3e22 PA |
10891 | w->exp_valid_block = exp_valid_block; |
10892 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10893 | if (just_location) |
10894 | { | |
850645cf TT |
10895 | struct type *t = value_type (val.get ()); |
10896 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10897 | |
43cc5389 | 10898 | w->exp_string_reparse |
f16a9f57 | 10899 | = current_language->watch_location_expression (t, addr).release (); |
06a64a0b | 10900 | |
3a5c3e22 | 10901 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10902 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10903 | } |
10904 | else | |
3a5c3e22 | 10905 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10906 | |
10907 | if (use_mask) | |
10908 | { | |
3a5c3e22 | 10909 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10910 | } |
10911 | else | |
10912 | { | |
3a5c3e22 | 10913 | w->val = val; |
bb9d5f81 PP |
10914 | w->val_bitpos = saved_bitpos; |
10915 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10916 | w->val_valid = true; |
9c06b0b4 | 10917 | } |
77b06cd7 | 10918 | |
c906108c | 10919 | if (cond_start) |
c1fc2657 | 10920 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10921 | else |
c1fc2657 | 10922 | w->cond_string = 0; |
c5aa993b | 10923 | |
441d7c93 | 10924 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10925 | { |
441d7c93 | 10926 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10927 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10928 | } |
c906108c | 10929 | else |
f6bc2008 | 10930 | { |
3a5c3e22 PA |
10931 | w->watchpoint_frame = null_frame_id; |
10932 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10933 | } |
c906108c | 10934 | |
d983da9c | 10935 | if (scope_breakpoint != NULL) |
c906108c | 10936 | { |
d983da9c DJ |
10937 | /* The scope breakpoint is related to the watchpoint. We will |
10938 | need to act on them together. */ | |
c1fc2657 | 10939 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10940 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10941 | } |
d983da9c | 10942 | |
06a64a0b TT |
10943 | if (!just_location) |
10944 | value_free_to_mark (mark); | |
2d134ed3 | 10945 | |
b270e6f9 TT |
10946 | /* Finally update the new watchpoint. This creates the locations |
10947 | that should be inserted. */ | |
10948 | update_watchpoint (w.get (), 1); | |
a9634178 | 10949 | |
b270e6f9 | 10950 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10951 | } |
10952 | ||
e09342b5 | 10953 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10954 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10955 | |
c906108c | 10956 | static int |
a6535de1 | 10957 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10958 | { |
10959 | int found_memory_cnt = 0; | |
10960 | ||
10961 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10962 | if (!can_use_hw_watchpoints) |
c906108c | 10963 | return 0; |
c5aa993b | 10964 | |
a6535de1 TT |
10965 | gdb_assert (!vals.empty ()); |
10966 | struct value *head = vals[0].get (); | |
10967 | ||
5c44784c JM |
10968 | /* Make sure that the value of the expression depends only upon |
10969 | memory contents, and values computed from them within GDB. If we | |
10970 | find any register references or function calls, we can't use a | |
10971 | hardware watchpoint. | |
10972 | ||
10973 | The idea here is that evaluating an expression generates a series | |
10974 | of values, one holding the value of every subexpression. (The | |
10975 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10976 | a*b+c.) GDB's values hold almost enough information to establish | |
10977 | the criteria given above --- they identify memory lvalues, | |
10978 | register lvalues, computed values, etcetera. So we can evaluate | |
10979 | the expression, and then scan the chain of values that leaves | |
10980 | behind to decide whether we can detect any possible change to the | |
10981 | expression's final value using only hardware watchpoints. | |
10982 | ||
10983 | However, I don't think that the values returned by inferior | |
10984 | function calls are special in any way. So this function may not | |
10985 | notice that an expression involving an inferior function call | |
10986 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10987 | for (const value_ref_ptr &iter : vals) |
c906108c | 10988 | { |
a6535de1 TT |
10989 | struct value *v = iter.get (); |
10990 | ||
5c44784c | 10991 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10992 | { |
8464be76 DJ |
10993 | if (v != head && value_lazy (v)) |
10994 | /* A lazy memory lvalue in the chain is one that GDB never | |
10995 | needed to fetch; we either just used its address (e.g., | |
10996 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10997 | in `a,b'). This doesn't apply to HEAD; if that is | |
10998 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10999 | ; |
53a5351d | 11000 | else |
5c44784c JM |
11001 | { |
11002 | /* Ahh, memory we actually used! Check if we can cover | |
11003 | it with hardware watchpoints. */ | |
df407dfe | 11004 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11005 | |
11006 | /* We only watch structs and arrays if user asked for it | |
11007 | explicitly, never if they just happen to appear in a | |
11008 | middle of some value chain. */ | |
11009 | if (v == head | |
78134374 SM |
11010 | || (vtype->code () != TYPE_CODE_STRUCT |
11011 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 11012 | { |
42ae5230 | 11013 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11014 | int len; |
11015 | int num_regs; | |
11016 | ||
a9634178 | 11017 | len = (target_exact_watchpoints |
e09342b5 TJB |
11018 | && is_scalar_type_recursive (vtype))? |
11019 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11020 | |
e09342b5 TJB |
11021 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11022 | if (!num_regs) | |
2e70b7b9 MS |
11023 | return 0; |
11024 | else | |
e09342b5 | 11025 | found_memory_cnt += num_regs; |
2e70b7b9 | 11026 | } |
5c44784c | 11027 | } |
c5aa993b | 11028 | } |
5086187c AC |
11029 | else if (VALUE_LVAL (v) != not_lval |
11030 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11031 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11032 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11033 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11034 | } |
11035 | ||
11036 | /* The expression itself looks suitable for using a hardware | |
11037 | watchpoint, but give the target machine a chance to reject it. */ | |
11038 | return found_memory_cnt; | |
11039 | } | |
11040 | ||
8b93c638 | 11041 | void |
f2fc3015 | 11042 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11043 | { |
84f4c1fe | 11044 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11045 | } |
11046 | ||
06a64a0b TT |
11047 | /* A helper function that looks for the "-location" argument and then |
11048 | calls watch_command_1. */ | |
11049 | ||
11050 | static void | |
0b39b52e | 11051 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
11052 | { |
11053 | int just_location = 0; | |
11054 | ||
11055 | if (arg | |
11056 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11057 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
cbba3ecd | 11058 | just_location = 1; |
06a64a0b | 11059 | |
84f4c1fe | 11060 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11061 | } |
8926118c | 11062 | |
c5aa993b | 11063 | static void |
0b39b52e | 11064 | watch_command (const char *arg, int from_tty) |
c906108c | 11065 | { |
06a64a0b | 11066 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11067 | } |
11068 | ||
8b93c638 | 11069 | void |
f2fc3015 | 11070 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11071 | { |
84f4c1fe | 11072 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11073 | } |
8926118c | 11074 | |
c5aa993b | 11075 | static void |
0b39b52e | 11076 | rwatch_command (const char *arg, int from_tty) |
c906108c | 11077 | { |
06a64a0b | 11078 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11079 | } |
11080 | ||
8b93c638 | 11081 | void |
f2fc3015 | 11082 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 11083 | { |
84f4c1fe | 11084 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11085 | } |
8926118c | 11086 | |
c5aa993b | 11087 | static void |
0b39b52e | 11088 | awatch_command (const char *arg, int from_tty) |
c906108c | 11089 | { |
06a64a0b | 11090 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11091 | } |
c906108c | 11092 | \f |
c5aa993b | 11093 | |
cfc31633 PA |
11094 | /* Data for the FSM that manages the until(location)/advance commands |
11095 | in infcmd.c. Here because it uses the mechanisms of | |
11096 | breakpoints. */ | |
c906108c | 11097 | |
46e3ed7f | 11098 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 11099 | { |
46e3ed7f | 11100 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
11101 | int thread; |
11102 | ||
df631783 PA |
11103 | /* The breakpoint set at the return address in the caller frame, |
11104 | plus breakpoints at all the destination locations. */ | |
11105 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 11106 | |
46e3ed7f | 11107 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 11108 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
11109 | : thread_fsm (cmd_interp), |
11110 | thread (thread), | |
df631783 | 11111 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
11112 | { |
11113 | } | |
cfc31633 | 11114 | |
46e3ed7f TT |
11115 | void clean_up (struct thread_info *thread) override; |
11116 | bool should_stop (struct thread_info *thread) override; | |
11117 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
11118 | }; |
11119 | ||
cfc31633 PA |
11120 | /* Implementation of the 'should_stop' FSM method for the |
11121 | until(location)/advance commands. */ | |
11122 | ||
46e3ed7f TT |
11123 | bool |
11124 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 11125 | { |
df631783 PA |
11126 | for (const breakpoint_up &bp : breakpoints) |
11127 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11128 | bp.get ()) != NULL) | |
11129 | { | |
11130 | set_finished (); | |
11131 | break; | |
11132 | } | |
cfc31633 | 11133 | |
46e3ed7f | 11134 | return true; |
cfc31633 PA |
11135 | } |
11136 | ||
11137 | /* Implementation of the 'clean_up' FSM method for the | |
11138 | until(location)/advance commands. */ | |
11139 | ||
46e3ed7f TT |
11140 | void |
11141 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 11142 | { |
cfc31633 | 11143 | /* Clean up our temporary breakpoints. */ |
df631783 | 11144 | breakpoints.clear (); |
46e3ed7f | 11145 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
11146 | } |
11147 | ||
11148 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11149 | until(location)/advance commands. */ | |
11150 | ||
46e3ed7f TT |
11151 | enum async_reply_reason |
11152 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
11153 | { |
11154 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11155 | } |
11156 | ||
c906108c | 11157 | void |
f2fc3015 | 11158 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11159 | { |
8556afb4 PA |
11160 | struct frame_info *frame; |
11161 | struct gdbarch *frame_gdbarch; | |
11162 | struct frame_id stack_frame_id; | |
11163 | struct frame_id caller_frame_id; | |
186c406b TT |
11164 | int thread; |
11165 | struct thread_info *tp; | |
c906108c | 11166 | |
70509625 | 11167 | clear_proceed_status (0); |
c906108c SS |
11168 | |
11169 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11170 | this function. */ |
c5aa993b | 11171 | |
ffc2605c | 11172 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11173 | |
6c5b2ebe PA |
11174 | std::vector<symtab_and_line> sals |
11175 | = (last_displayed_sal_is_valid () | |
11176 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11177 | get_last_displayed_symtab (), | |
11178 | get_last_displayed_line ()) | |
11179 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 11180 | NULL, NULL, 0)); |
c5aa993b | 11181 | |
df631783 | 11182 | if (sals.empty ()) |
8a3fe4f8 | 11183 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11184 | |
c906108c | 11185 | if (*arg) |
8a3fe4f8 | 11186 | error (_("Junk at end of arguments.")); |
c5aa993b | 11187 | |
186c406b | 11188 | tp = inferior_thread (); |
5d5658a1 | 11189 | thread = tp->global_num; |
186c406b | 11190 | |
8556afb4 PA |
11191 | /* Note linespec handling above invalidates the frame chain. |
11192 | Installing a breakpoint also invalidates the frame chain (as it | |
11193 | may need to switch threads), so do any frame handling before | |
11194 | that. */ | |
11195 | ||
11196 | frame = get_selected_frame (NULL); | |
11197 | frame_gdbarch = get_frame_arch (frame); | |
11198 | stack_frame_id = get_stack_frame_id (frame); | |
11199 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11200 | |
ae66c1fc EZ |
11201 | /* Keep within the current frame, or in frames called by the current |
11202 | one. */ | |
edb3359d | 11203 | |
df631783 | 11204 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
11205 | |
11206 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11207 | ||
883bc8d1 | 11208 | if (frame_id_p (caller_frame_id)) |
c906108c | 11209 | { |
883bc8d1 | 11210 | struct symtab_and_line sal2; |
cfc31633 | 11211 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11212 | |
11213 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11214 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 11215 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
11216 | |
11217 | breakpoint_up caller_breakpoint | |
11218 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
11219 | caller_frame_id, bp_until); | |
11220 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 11221 | |
883bc8d1 | 11222 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11223 | lj_deleter.emplace (thread); |
c906108c | 11224 | } |
c5aa993b | 11225 | |
c70a6932 JK |
11226 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11227 | frame = NULL; | |
11228 | ||
df631783 PA |
11229 | /* If the user told us to continue until a specified location, we |
11230 | don't specify a frame at which we need to stop. Otherwise, | |
11231 | specify the selected frame, because we want to stop only at the | |
11232 | very same frame. */ | |
11233 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
11234 | ||
11235 | for (symtab_and_line &sal : sals) | |
11236 | { | |
11237 | resolve_sal_pc (&sal); | |
11238 | ||
11239 | breakpoint_up location_breakpoint | |
11240 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
11241 | stop_frame_id, bp_until); | |
11242 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
11243 | } | |
883bc8d1 | 11244 | |
46e3ed7f | 11245 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
df631783 | 11246 | std::move (breakpoints)); |
f107f563 | 11247 | |
5419bdae TT |
11248 | if (lj_deleter) |
11249 | lj_deleter->release (); | |
f107f563 | 11250 | |
cfc31633 | 11251 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11252 | } |
ae66c1fc | 11253 | |
c906108c SS |
11254 | /* This function attempts to parse an optional "if <cond>" clause |
11255 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11256 | |
c906108c SS |
11257 | Else, it returns a pointer to the condition string. (It does not |
11258 | attempt to evaluate the string against a particular block.) And, | |
11259 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11260 | if clause in the arg string. */ |
53a5351d | 11261 | |
63160a43 PA |
11262 | const char * |
11263 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11264 | { |
63160a43 | 11265 | const char *cond_string; |
c5aa993b JM |
11266 | |
11267 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11268 | return NULL; |
c5aa993b | 11269 | |
4a64f543 | 11270 | /* Skip the "if" keyword. */ |
c906108c | 11271 | (*arg) += 2; |
c5aa993b | 11272 | |
c906108c | 11273 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11274 | condition string. */ |
f1735a53 | 11275 | *arg = skip_spaces (*arg); |
c906108c | 11276 | cond_string = *arg; |
c5aa993b | 11277 | |
4a64f543 MS |
11278 | /* Assume that the condition occupies the remainder of the arg |
11279 | string. */ | |
c906108c | 11280 | (*arg) += strlen (cond_string); |
c5aa993b | 11281 | |
c906108c SS |
11282 | return cond_string; |
11283 | } | |
c5aa993b | 11284 | |
c906108c SS |
11285 | /* Commands to deal with catching events, such as signals, exceptions, |
11286 | process start/exit, etc. */ | |
c5aa993b JM |
11287 | |
11288 | typedef enum | |
11289 | { | |
44feb3ce TT |
11290 | catch_fork_temporary, catch_vfork_temporary, |
11291 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11292 | } |
11293 | catch_fork_kind; | |
11294 | ||
c906108c | 11295 | static void |
eb4c3f4a | 11296 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11297 | struct cmd_list_element *command) |
c906108c | 11298 | { |
a6d9a66e | 11299 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11300 | const char *cond_string = NULL; |
44feb3ce | 11301 | catch_fork_kind fork_kind; |
44feb3ce TT |
11302 | |
11303 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
b650a282 SM |
11304 | bool temp = (fork_kind == catch_fork_temporary |
11305 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11306 | |
44feb3ce TT |
11307 | if (!arg) |
11308 | arg = ""; | |
f1735a53 | 11309 | arg = skip_spaces (arg); |
c5aa993b | 11310 | |
c906108c | 11311 | /* The allowed syntax is: |
c5aa993b JM |
11312 | catch [v]fork |
11313 | catch [v]fork if <cond> | |
11314 | ||
4a64f543 | 11315 | First, check if there's an if clause. */ |
c906108c | 11316 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11317 | |
c906108c | 11318 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11319 | error (_("Junk at end of arguments.")); |
c5aa993b | 11320 | |
c906108c | 11321 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11322 | and enable reporting of such events. */ |
c5aa993b JM |
11323 | switch (fork_kind) |
11324 | { | |
44feb3ce TT |
11325 | case catch_fork_temporary: |
11326 | case catch_fork_permanent: | |
b650a282 | 11327 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
ce78b96d | 11328 | &catch_fork_breakpoint_ops); |
c906108c | 11329 | break; |
44feb3ce TT |
11330 | case catch_vfork_temporary: |
11331 | case catch_vfork_permanent: | |
b650a282 | 11332 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
ce78b96d | 11333 | &catch_vfork_breakpoint_ops); |
c906108c | 11334 | break; |
c5aa993b | 11335 | default: |
8a3fe4f8 | 11336 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11337 | break; |
c5aa993b | 11338 | } |
c906108c SS |
11339 | } |
11340 | ||
11341 | static void | |
eb4c3f4a | 11342 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11343 | struct cmd_list_element *command) |
c906108c | 11344 | { |
a6d9a66e | 11345 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11346 | const char *cond_string = NULL; |
b650a282 | 11347 | bool temp = get_cmd_context (command) == CATCH_TEMPORARY; |
44feb3ce TT |
11348 | |
11349 | if (!arg) | |
11350 | arg = ""; | |
f1735a53 | 11351 | arg = skip_spaces (arg); |
c906108c SS |
11352 | |
11353 | /* The allowed syntax is: | |
c5aa993b JM |
11354 | catch exec |
11355 | catch exec if <cond> | |
c906108c | 11356 | |
4a64f543 | 11357 | First, check if there's an if clause. */ |
c906108c SS |
11358 | cond_string = ep_parse_optional_if_clause (&arg); |
11359 | ||
11360 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11361 | error (_("Junk at end of arguments.")); |
c906108c | 11362 | |
b270e6f9 | 11363 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
b650a282 | 11364 | init_catchpoint (c.get (), gdbarch, temp, cond_string, |
b4d90040 PA |
11365 | &catch_exec_breakpoint_ops); |
11366 | c->exec_pathname = NULL; | |
11367 | ||
b270e6f9 | 11368 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11369 | } |
c5aa993b | 11370 | |
9ac4176b | 11371 | void |
28010a5d PA |
11372 | init_ada_exception_breakpoint (struct breakpoint *b, |
11373 | struct gdbarch *gdbarch, | |
11374 | struct symtab_and_line sal, | |
f2fc3015 | 11375 | const char *addr_string, |
c0a91b2b | 11376 | const struct breakpoint_ops *ops, |
28010a5d | 11377 | int tempflag, |
349774ef | 11378 | int enabled, |
28010a5d | 11379 | int from_tty) |
f7f9143b | 11380 | { |
f7f9143b JB |
11381 | if (from_tty) |
11382 | { | |
5af949e3 UW |
11383 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11384 | if (!loc_gdbarch) | |
11385 | loc_gdbarch = gdbarch; | |
11386 | ||
6c95b8df PA |
11387 | describe_other_breakpoints (loc_gdbarch, |
11388 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11389 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11390 | version for exception catchpoints, because two catchpoints | |
11391 | used for different exception names will use the same address. | |
11392 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11393 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11394 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11395 | the user what type of catchpoint it is. The above is good |
11396 | enough for now, though. */ | |
11397 | } | |
11398 | ||
f06f1252 | 11399 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
f7f9143b | 11400 | |
349774ef | 11401 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11402 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11403 | b->location = string_to_event_location (&addr_string, |
11404 | language_def (language_ada)); | |
f7f9143b | 11405 | b->language = language_ada; |
f7f9143b JB |
11406 | } |
11407 | ||
c906108c SS |
11408 | \f |
11409 | ||
81b1e71c | 11410 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11411 | |
11412 | static int | |
81b1e71c | 11413 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11414 | { |
81b1e71c TT |
11415 | uintptr_t ua = (uintptr_t) a; |
11416 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11417 | |
81b1e71c | 11418 | if (a->number < b->number) |
8a2c437b | 11419 | return -1; |
81b1e71c | 11420 | else if (a->number > b->number) |
8a2c437b TT |
11421 | return 1; |
11422 | ||
11423 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11424 | the number 0. */ | |
11425 | if (ua < ub) | |
11426 | return -1; | |
94b0e70d | 11427 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11428 | } |
11429 | ||
80f8a6eb | 11430 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11431 | |
11432 | static void | |
0b39b52e | 11433 | clear_command (const char *arg, int from_tty) |
c906108c | 11434 | { |
81b1e71c | 11435 | struct breakpoint *b; |
c906108c | 11436 | int default_match; |
c906108c | 11437 | |
6c5b2ebe PA |
11438 | std::vector<symtab_and_line> decoded_sals; |
11439 | symtab_and_line last_sal; | |
11440 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11441 | if (arg) |
11442 | { | |
6c5b2ebe PA |
11443 | decoded_sals |
11444 | = decode_line_with_current_source (arg, | |
11445 | (DECODE_LINE_FUNFIRSTLINE | |
11446 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11447 | default_match = 0; |
6c5b2ebe | 11448 | sals = decoded_sals; |
c906108c SS |
11449 | } |
11450 | else | |
11451 | { | |
1bfeeb0f JL |
11452 | /* Set sal's line, symtab, pc, and pspace to the values |
11453 | corresponding to the last call to print_frame_info. If the | |
11454 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11455 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11456 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11457 | error (_("No source file specified.")); |
c906108c | 11458 | |
c906108c | 11459 | default_match = 1; |
6c5b2ebe | 11460 | sals = last_sal; |
c906108c SS |
11461 | } |
11462 | ||
4a64f543 MS |
11463 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11464 | seems, because all existing breakpoints typically have both | |
11465 | file/line and pc set. So, if clear is given file/line, we can | |
11466 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11467 | |
11468 | We only support clearing given the address explicitly | |
11469 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11470 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11471 | due to optimization, all in one block. |
4a64f543 MS |
11472 | |
11473 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11474 | PC corresponding to the same file:line, the breakpoint won't |
11475 | be cleared. We probably can still clear the breakpoint, but | |
11476 | since the other PC value is never presented to user, user | |
11477 | can only find it by guessing, and it does not seem important | |
11478 | to support that. */ | |
11479 | ||
4a64f543 MS |
11480 | /* For each line spec given, delete bps which correspond to it. Do |
11481 | it in two passes, solely to preserve the current behavior that | |
11482 | from_tty is forced true if we delete more than one | |
11483 | breakpoint. */ | |
c906108c | 11484 | |
81b1e71c | 11485 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11486 | for (const auto &sal : sals) |
c906108c | 11487 | { |
05cba821 JK |
11488 | const char *sal_fullname; |
11489 | ||
c906108c | 11490 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11491 | If line given (pc == 0), clear all bpts on specified line. |
11492 | If defaulting, clear all bpts on default line | |
c906108c | 11493 | or at default pc. |
c5aa993b JM |
11494 | |
11495 | defaulting sal.pc != 0 tests to do | |
11496 | ||
11497 | 0 1 pc | |
11498 | 1 1 pc _and_ line | |
11499 | 0 0 line | |
11500 | 1 0 <can't happen> */ | |
c906108c | 11501 | |
05cba821 JK |
11502 | sal_fullname = (sal.symtab == NULL |
11503 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11504 | |
4a64f543 | 11505 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11506 | ALL_BREAKPOINTS (b) |
c5aa993b | 11507 | { |
0d381245 | 11508 | int match = 0; |
4a64f543 | 11509 | /* Are we going to delete b? */ |
cc60f2e3 | 11510 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11511 | { |
11512 | struct bp_location *loc = b->loc; | |
11513 | for (; loc; loc = loc->next) | |
11514 | { | |
f8eba3c6 TT |
11515 | /* If the user specified file:line, don't allow a PC |
11516 | match. This matches historical gdb behavior. */ | |
11517 | int pc_match = (!sal.explicit_line | |
11518 | && sal.pc | |
11519 | && (loc->pspace == sal.pspace) | |
11520 | && (loc->address == sal.pc) | |
11521 | && (!section_is_overlay (loc->section) | |
11522 | || loc->section == sal.section)); | |
4aac40c8 TT |
11523 | int line_match = 0; |
11524 | ||
11525 | if ((default_match || sal.explicit_line) | |
2f202fde | 11526 | && loc->symtab != NULL |
05cba821 | 11527 | && sal_fullname != NULL |
4aac40c8 | 11528 | && sal.pspace == loc->pspace |
05cba821 JK |
11529 | && loc->line_number == sal.line |
11530 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11531 | sal_fullname) == 0) | |
11532 | line_match = 1; | |
4aac40c8 | 11533 | |
0d381245 VP |
11534 | if (pc_match || line_match) |
11535 | { | |
11536 | match = 1; | |
11537 | break; | |
11538 | } | |
11539 | } | |
11540 | } | |
11541 | ||
11542 | if (match) | |
81b1e71c | 11543 | found.push_back (b); |
c906108c | 11544 | } |
80f8a6eb | 11545 | } |
8a2c437b | 11546 | |
80f8a6eb | 11547 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11548 | if (found.empty ()) |
80f8a6eb MS |
11549 | { |
11550 | if (arg) | |
8a3fe4f8 | 11551 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11552 | else |
8a3fe4f8 | 11553 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11554 | } |
c906108c | 11555 | |
8a2c437b | 11556 | /* Remove duplicates from the vec. */ |
81b1e71c | 11557 | std::sort (found.begin (), found.end (), |
b926417a | 11558 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11559 | { |
b926417a | 11560 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11561 | }); |
11562 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11563 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11564 | { |
b926417a | 11565 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11566 | }), |
11567 | found.end ()); | |
8a2c437b | 11568 | |
81b1e71c | 11569 | if (found.size () > 1) |
4a64f543 | 11570 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11571 | if (from_tty) |
a3f17187 | 11572 | { |
81b1e71c | 11573 | if (found.size () == 1) |
a3f17187 AC |
11574 | printf_unfiltered (_("Deleted breakpoint ")); |
11575 | else | |
11576 | printf_unfiltered (_("Deleted breakpoints ")); | |
11577 | } | |
d6e956e5 | 11578 | |
81b1e71c | 11579 | for (breakpoint *iter : found) |
80f8a6eb | 11580 | { |
c5aa993b | 11581 | if (from_tty) |
81b1e71c TT |
11582 | printf_unfiltered ("%d ", iter->number); |
11583 | delete_breakpoint (iter); | |
c906108c | 11584 | } |
80f8a6eb MS |
11585 | if (from_tty) |
11586 | putchar_unfiltered ('\n'); | |
c906108c SS |
11587 | } |
11588 | \f | |
11589 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11590 | all breakpoints that are marked for deletion, whether hit or not. | |
11591 | This is called after any breakpoint is hit, or after errors. */ | |
11592 | ||
11593 | void | |
fba45db2 | 11594 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11595 | { |
35df4500 | 11596 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11597 | |
11598 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11599 | if (bs->breakpoint_at |
11600 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11601 | && bs->stop) |
f431efe5 | 11602 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11603 | |
35df4500 | 11604 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11605 | { |
b5de0fa7 | 11606 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11607 | delete_breakpoint (b); |
11608 | } | |
c906108c SS |
11609 | } |
11610 | ||
4a64f543 | 11611 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 11612 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
11613 | bl_address_is_meaningful says), secondarily by ordering first |
11614 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 11615 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
11616 | |
11617 | static int | |
39ef2f62 | 11618 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 11619 | { |
876fa593 | 11620 | if (a->address != b->address) |
39ef2f62 | 11621 | return a->address < b->address; |
876fa593 | 11622 | |
dea2aa5f LM |
11623 | /* Sort locations at the same address by their pspace number, keeping |
11624 | locations of the same inferior (in a multi-inferior environment) | |
11625 | grouped. */ | |
11626 | ||
11627 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 11628 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 11629 | |
876fa593 | 11630 | /* Sort permanent breakpoints first. */ |
1a853c52 | 11631 | if (a->permanent != b->permanent) |
39ef2f62 | 11632 | return a->permanent > b->permanent; |
876fa593 | 11633 | |
7f32a4d5 PA |
11634 | /* Sort by type in order to make duplicate determination easier. |
11635 | See update_global_location_list. This is kept in sync with | |
11636 | breakpoint_locations_match. */ | |
11637 | if (a->loc_type < b->loc_type) | |
11638 | return true; | |
11639 | ||
11640 | /* Likewise, for range-breakpoints, sort by length. */ | |
11641 | if (a->loc_type == bp_loc_hardware_breakpoint | |
11642 | && b->loc_type == bp_loc_hardware_breakpoint | |
11643 | && a->length < b->length) | |
11644 | return true; | |
11645 | ||
c56a97f9 JK |
11646 | /* Make the internal GDB representation stable across GDB runs |
11647 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11648 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11649 | |
11650 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 11651 | return a->owner->number < b->owner->number; |
876fa593 | 11652 | |
39ef2f62 | 11653 | return a < b; |
876fa593 JK |
11654 | } |
11655 | ||
f5336ca5 PA |
11656 | /* Set bp_locations_placed_address_before_address_max and |
11657 | bp_locations_shadow_len_after_address_max according to the current | |
11658 | content of the bp_locations array. */ | |
f7545552 TT |
11659 | |
11660 | static void | |
f5336ca5 | 11661 | bp_locations_target_extensions_update (void) |
f7545552 | 11662 | { |
876fa593 JK |
11663 | struct bp_location *bl, **blp_tmp; |
11664 | ||
f5336ca5 PA |
11665 | bp_locations_placed_address_before_address_max = 0; |
11666 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11667 | |
11668 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11669 | { | |
11670 | CORE_ADDR start, end, addr; | |
11671 | ||
11672 | if (!bp_location_has_shadow (bl)) | |
11673 | continue; | |
11674 | ||
11675 | start = bl->target_info.placed_address; | |
11676 | end = start + bl->target_info.shadow_len; | |
11677 | ||
11678 | gdb_assert (bl->address >= start); | |
11679 | addr = bl->address - start; | |
f5336ca5 PA |
11680 | if (addr > bp_locations_placed_address_before_address_max) |
11681 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11682 | |
11683 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11684 | ||
11685 | gdb_assert (bl->address < end); | |
11686 | addr = end - bl->address; | |
f5336ca5 PA |
11687 | if (addr > bp_locations_shadow_len_after_address_max) |
11688 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11689 | } |
f7545552 TT |
11690 | } |
11691 | ||
1e4d1764 YQ |
11692 | /* Download tracepoint locations if they haven't been. */ |
11693 | ||
11694 | static void | |
11695 | download_tracepoint_locations (void) | |
11696 | { | |
7ed2c994 | 11697 | struct breakpoint *b; |
dd2e65cc | 11698 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11699 | |
5ed8105e | 11700 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11701 | |
7ed2c994 | 11702 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11703 | { |
7ed2c994 | 11704 | struct bp_location *bl; |
1e4d1764 | 11705 | struct tracepoint *t; |
f2a8bc8a | 11706 | int bp_location_downloaded = 0; |
1e4d1764 | 11707 | |
7ed2c994 | 11708 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11709 | ? !may_insert_fast_tracepoints |
11710 | : !may_insert_tracepoints)) | |
11711 | continue; | |
11712 | ||
dd2e65cc YQ |
11713 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11714 | { | |
11715 | if (target_can_download_tracepoint ()) | |
11716 | can_download_tracepoint = TRIBOOL_TRUE; | |
11717 | else | |
11718 | can_download_tracepoint = TRIBOOL_FALSE; | |
11719 | } | |
11720 | ||
11721 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11722 | break; | |
11723 | ||
7ed2c994 YQ |
11724 | for (bl = b->loc; bl; bl = bl->next) |
11725 | { | |
11726 | /* In tracepoint, locations are _never_ duplicated, so | |
11727 | should_be_inserted is equivalent to | |
11728 | unduplicated_should_be_inserted. */ | |
11729 | if (!should_be_inserted (bl) || bl->inserted) | |
11730 | continue; | |
1e4d1764 | 11731 | |
7ed2c994 | 11732 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11733 | |
7ed2c994 | 11734 | target_download_tracepoint (bl); |
1e4d1764 | 11735 | |
7ed2c994 | 11736 | bl->inserted = 1; |
f2a8bc8a | 11737 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11738 | } |
11739 | t = (struct tracepoint *) b; | |
11740 | t->number_on_target = b->number; | |
f2a8bc8a | 11741 | if (bp_location_downloaded) |
76727919 | 11742 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11743 | } |
1e4d1764 YQ |
11744 | } |
11745 | ||
934709f0 PW |
11746 | /* Swap the insertion/duplication state between two locations. */ |
11747 | ||
11748 | static void | |
11749 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11750 | { | |
11751 | const int left_inserted = left->inserted; | |
11752 | const int left_duplicate = left->duplicate; | |
b775012e | 11753 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11754 | const struct bp_target_info left_target_info = left->target_info; |
11755 | ||
1e4d1764 YQ |
11756 | /* Locations of tracepoints can never be duplicated. */ |
11757 | if (is_tracepoint (left->owner)) | |
11758 | gdb_assert (!left->duplicate); | |
11759 | if (is_tracepoint (right->owner)) | |
11760 | gdb_assert (!right->duplicate); | |
11761 | ||
934709f0 PW |
11762 | left->inserted = right->inserted; |
11763 | left->duplicate = right->duplicate; | |
b775012e | 11764 | left->needs_update = right->needs_update; |
934709f0 PW |
11765 | left->target_info = right->target_info; |
11766 | right->inserted = left_inserted; | |
11767 | right->duplicate = left_duplicate; | |
b775012e | 11768 | right->needs_update = left_needs_update; |
934709f0 PW |
11769 | right->target_info = left_target_info; |
11770 | } | |
11771 | ||
b775012e LM |
11772 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11773 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11774 | conditions on the target's side. Such conditions need to be updated on | |
11775 | the target. */ | |
11776 | ||
11777 | static void | |
11778 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11779 | { | |
11780 | struct bp_location **locp = NULL, **loc2p; | |
11781 | struct bp_location *loc; | |
11782 | CORE_ADDR address = 0; | |
11783 | int pspace_num; | |
11784 | ||
11785 | address = bl->address; | |
11786 | pspace_num = bl->pspace->num; | |
11787 | ||
11788 | /* This is only meaningful if the target is | |
11789 | evaluating conditions and if the user has | |
11790 | opted for condition evaluation on the target's | |
11791 | side. */ | |
11792 | if (gdb_evaluates_breakpoint_condition_p () | |
11793 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11794 | return; | |
11795 | ||
11796 | /* Flag all breakpoint locations with this address and | |
11797 | the same program space as the location | |
11798 | as "its condition has changed". We need to | |
11799 | update the conditions on the target's side. */ | |
11800 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11801 | { | |
11802 | loc = *loc2p; | |
11803 | ||
11804 | if (!is_breakpoint (loc->owner) | |
11805 | || pspace_num != loc->pspace->num) | |
11806 | continue; | |
11807 | ||
11808 | /* Flag the location appropriately. We use a different state to | |
11809 | let everyone know that we already updated the set of locations | |
11810 | with addr bl->address and program space bl->pspace. This is so | |
11811 | we don't have to keep calling these functions just to mark locations | |
11812 | that have already been marked. */ | |
11813 | loc->condition_changed = condition_updated; | |
11814 | ||
11815 | /* Free the agent expression bytecode as well. We will compute | |
11816 | it later on. */ | |
833177a4 | 11817 | loc->cond_bytecode.reset (); |
b775012e LM |
11818 | } |
11819 | } | |
7f32a4d5 | 11820 | |
44702360 PA |
11821 | /* Called whether new breakpoints are created, or existing breakpoints |
11822 | deleted, to update the global location list and recompute which | |
11823 | locations are duplicate of which. | |
b775012e | 11824 | |
04086b45 PA |
11825 | The INSERT_MODE flag determines whether locations may not, may, or |
11826 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11827 | info. */ | |
b60e7edf | 11828 | |
0d381245 | 11829 | static void |
44702360 | 11830 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11831 | { |
74960c60 | 11832 | struct breakpoint *b; |
876fa593 | 11833 | struct bp_location **locp, *loc; |
b775012e LM |
11834 | /* Last breakpoint location address that was marked for update. */ |
11835 | CORE_ADDR last_addr = 0; | |
11836 | /* Last breakpoint location program space that was marked for update. */ | |
11837 | int last_pspace_num = -1; | |
f7545552 | 11838 | |
2d134ed3 PA |
11839 | /* Used in the duplicates detection below. When iterating over all |
11840 | bp_locations, points to the first bp_location of a given address. | |
11841 | Breakpoints and watchpoints of different types are never | |
11842 | duplicates of each other. Keep one pointer for each type of | |
11843 | breakpoint/watchpoint, so we only need to loop over all locations | |
11844 | once. */ | |
11845 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11846 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11847 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11848 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11849 | |
f5336ca5 PA |
11850 | /* Saved former bp_locations array which we compare against the newly |
11851 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11852 | struct bp_location **old_locp; |
f5336ca5 | 11853 | unsigned old_locations_count; |
81b1e71c | 11854 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11855 | |
f5336ca5 PA |
11856 | old_locations_count = bp_locations_count; |
11857 | bp_locations = NULL; | |
11858 | bp_locations_count = 0; | |
0d381245 | 11859 | |
74960c60 | 11860 | ALL_BREAKPOINTS (b) |
876fa593 | 11861 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11862 | bp_locations_count++; |
876fa593 | 11863 | |
f5336ca5 PA |
11864 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11865 | locp = bp_locations; | |
876fa593 JK |
11866 | ALL_BREAKPOINTS (b) |
11867 | for (loc = b->loc; loc; loc = loc->next) | |
11868 | *locp++ = loc; | |
7f32a4d5 PA |
11869 | |
11870 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
11871 | breakpoint. Do this before deciding whether locations are | |
11872 | duplicates. Also do this before sorting because sorting order | |
11873 | depends on location type. */ | |
11874 | for (locp = bp_locations; | |
11875 | locp < bp_locations + bp_locations_count; | |
11876 | locp++) | |
11877 | { | |
11878 | loc = *locp; | |
11879 | if (!loc->inserted && should_be_inserted (loc)) | |
11880 | handle_automatic_hardware_breakpoints (loc); | |
11881 | } | |
11882 | ||
39ef2f62 CB |
11883 | std::sort (bp_locations, bp_locations + bp_locations_count, |
11884 | bp_location_is_less_than); | |
876fa593 | 11885 | |
f5336ca5 | 11886 | bp_locations_target_extensions_update (); |
74960c60 | 11887 | |
4a64f543 MS |
11888 | /* Identify bp_location instances that are no longer present in the |
11889 | new list, and therefore should be freed. Note that it's not | |
11890 | necessary that those locations should be removed from inferior -- | |
11891 | if there's another location at the same address (previously | |
11892 | marked as duplicate), we don't need to remove/insert the | |
11893 | location. | |
876fa593 | 11894 | |
4a64f543 MS |
11895 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11896 | and former bp_location array state respectively. */ | |
876fa593 | 11897 | |
f5336ca5 | 11898 | locp = bp_locations; |
81b1e71c TT |
11899 | for (old_locp = old_locations.get (); |
11900 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11901 | old_locp++) |
74960c60 | 11902 | { |
876fa593 | 11903 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11904 | struct bp_location **loc2p; |
876fa593 | 11905 | |
e5dd4106 | 11906 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11907 | not, we have to free it. */ |
c7d46a38 | 11908 | int found_object = 0; |
20874c92 VP |
11909 | /* Tells if the location should remain inserted in the target. */ |
11910 | int keep_in_target = 0; | |
11911 | int removed = 0; | |
876fa593 | 11912 | |
4a64f543 MS |
11913 | /* Skip LOCP entries which will definitely never be needed. |
11914 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11915 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11916 | && (*locp)->address < old_loc->address) |
876fa593 | 11917 | locp++; |
c7d46a38 PA |
11918 | |
11919 | for (loc2p = locp; | |
f5336ca5 | 11920 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11921 | && (*loc2p)->address == old_loc->address); |
11922 | loc2p++) | |
11923 | { | |
b775012e LM |
11924 | /* Check if this is a new/duplicated location or a duplicated |
11925 | location that had its condition modified. If so, we want to send | |
11926 | its condition to the target if evaluation of conditions is taking | |
11927 | place there. */ | |
11928 | if ((*loc2p)->condition_changed == condition_modified | |
11929 | && (last_addr != old_loc->address | |
11930 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11931 | { |
b775012e LM |
11932 | force_breakpoint_reinsertion (*loc2p); |
11933 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11934 | } |
b775012e LM |
11935 | |
11936 | if (*loc2p == old_loc) | |
11937 | found_object = 1; | |
c7d46a38 | 11938 | } |
74960c60 | 11939 | |
b775012e LM |
11940 | /* We have already handled this address, update it so that we don't |
11941 | have to go through updates again. */ | |
11942 | last_addr = old_loc->address; | |
11943 | ||
11944 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11945 | if (!found_object) | |
11946 | force_breakpoint_reinsertion (old_loc); | |
11947 | ||
4a64f543 MS |
11948 | /* If this location is no longer present, and inserted, look if |
11949 | there's maybe a new location at the same address. If so, | |
11950 | mark that one inserted, and don't remove this one. This is | |
11951 | needed so that we don't have a time window where a breakpoint | |
11952 | at certain location is not inserted. */ | |
74960c60 | 11953 | |
876fa593 | 11954 | if (old_loc->inserted) |
0d381245 | 11955 | { |
4a64f543 MS |
11956 | /* If the location is inserted now, we might have to remove |
11957 | it. */ | |
74960c60 | 11958 | |
876fa593 | 11959 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11960 | { |
4a64f543 MS |
11961 | /* The location is still present in the location list, |
11962 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11963 | keep_in_target = 1; |
74960c60 VP |
11964 | } |
11965 | else | |
11966 | { | |
b775012e LM |
11967 | /* This location still exists, but it won't be kept in the |
11968 | target since it may have been disabled. We proceed to | |
11969 | remove its target-side condition. */ | |
11970 | ||
4a64f543 MS |
11971 | /* The location is either no longer present, or got |
11972 | disabled. See if there's another location at the | |
11973 | same address, in which case we don't need to remove | |
11974 | this one from the target. */ | |
876fa593 | 11975 | |
2bdf28a0 | 11976 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11977 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11978 | { |
876fa593 | 11979 | for (loc2p = locp; |
f5336ca5 | 11980 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11981 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11982 | loc2p++) |
11983 | { | |
11984 | struct bp_location *loc2 = *loc2p; | |
11985 | ||
7f32a4d5 PA |
11986 | if (loc2 == old_loc) |
11987 | continue; | |
11988 | ||
2d134ed3 | 11989 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11990 | { |
85d721b8 PA |
11991 | /* Read watchpoint locations are switched to |
11992 | access watchpoints, if the former are not | |
11993 | supported, but the latter are. */ | |
11994 | if (is_hardware_watchpoint (old_loc->owner)) | |
11995 | { | |
11996 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11997 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11998 | } | |
11999 | ||
934709f0 PW |
12000 | /* loc2 is a duplicated location. We need to check |
12001 | if it should be inserted in case it will be | |
12002 | unduplicated. */ | |
7f32a4d5 | 12003 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 12004 | { |
934709f0 | 12005 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12006 | keep_in_target = 1; |
12007 | break; | |
12008 | } | |
876fa593 JK |
12009 | } |
12010 | } | |
12011 | } | |
74960c60 VP |
12012 | } |
12013 | ||
20874c92 VP |
12014 | if (!keep_in_target) |
12015 | { | |
834c0d03 | 12016 | if (remove_breakpoint (old_loc)) |
20874c92 | 12017 | { |
4a64f543 MS |
12018 | /* This is just about all we can do. We could keep |
12019 | this location on the global list, and try to | |
12020 | remove it next time, but there's no particular | |
12021 | reason why we will succeed next time. | |
20874c92 | 12022 | |
4a64f543 MS |
12023 | Note that at this point, old_loc->owner is still |
12024 | valid, as delete_breakpoint frees the breakpoint | |
12025 | only after calling us. */ | |
3e43a32a MS |
12026 | printf_filtered (_("warning: Error removing " |
12027 | "breakpoint %d\n"), | |
876fa593 | 12028 | old_loc->owner->number); |
20874c92 VP |
12029 | } |
12030 | removed = 1; | |
12031 | } | |
0d381245 | 12032 | } |
74960c60 VP |
12033 | |
12034 | if (!found_object) | |
1c5cfe86 | 12035 | { |
fbea99ea | 12036 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12037 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12038 | { |
db82e815 PA |
12039 | /* This location was removed from the target. In |
12040 | non-stop mode, a race condition is possible where | |
12041 | we've removed a breakpoint, but stop events for that | |
12042 | breakpoint are already queued and will arrive later. | |
12043 | We apply an heuristic to be able to distinguish such | |
12044 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12045 | breakpoint location for a bit, and will retire it | |
12046 | after we see some number of events. The theory here | |
12047 | is that reporting of events should, "on the average", | |
12048 | be fair, so after a while we'll see events from all | |
12049 | threads that have anything of interest, and no longer | |
12050 | need to keep this breakpoint location around. We | |
12051 | don't hold locations forever so to reduce chances of | |
12052 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12053 | SIGTRAP. | |
12054 | ||
12055 | The heuristic failing can be disastrous on | |
12056 | decr_pc_after_break targets. | |
12057 | ||
12058 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12059 | if we fail to recognize a late breakpoint SIGTRAP, | |
12060 | because events_till_retirement has reached 0 too | |
12061 | soon, we'll fail to do the PC adjustment, and report | |
12062 | a random SIGTRAP to the user. When the user resumes | |
12063 | the inferior, it will most likely immediately crash | |
2dec564e | 12064 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12065 | corrupted, because of being resumed e.g., in the |
12066 | middle of a multi-byte instruction, or skipped a | |
12067 | one-byte instruction. This was actually seen happen | |
12068 | on native x86-linux, and should be less rare on | |
12069 | targets that do not support new thread events, like | |
12070 | remote, due to the heuristic depending on | |
12071 | thread_count. | |
12072 | ||
12073 | Mistaking a random SIGTRAP for a breakpoint trap | |
12074 | causes similar symptoms (PC adjustment applied when | |
12075 | it shouldn't), but then again, playing with SIGTRAPs | |
12076 | behind the debugger's back is asking for trouble. | |
12077 | ||
12078 | Since hardware watchpoint traps are always | |
12079 | distinguishable from other traps, so we don't need to | |
12080 | apply keep hardware watchpoint moribund locations | |
12081 | around. We simply always ignore hardware watchpoint | |
12082 | traps we can no longer explain. */ | |
12083 | ||
5b6d1e4f PA |
12084 | process_stratum_target *proc_target = nullptr; |
12085 | for (inferior *inf : all_inferiors ()) | |
12086 | if (inf->pspace == old_loc->pspace) | |
12087 | { | |
12088 | proc_target = inf->process_target (); | |
12089 | break; | |
12090 | } | |
12091 | if (proc_target != nullptr) | |
12092 | old_loc->events_till_retirement | |
12093 | = 3 * (thread_count (proc_target) + 1); | |
12094 | else | |
12095 | old_loc->events_till_retirement = 1; | |
876fa593 | 12096 | old_loc->owner = NULL; |
20874c92 | 12097 | |
1123588c | 12098 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
12099 | } |
12100 | else | |
f431efe5 PA |
12101 | { |
12102 | old_loc->owner = NULL; | |
12103 | decref_bp_location (&old_loc); | |
12104 | } | |
20874c92 | 12105 | } |
74960c60 | 12106 | } |
1c5cfe86 | 12107 | |
348d480f PA |
12108 | /* Rescan breakpoints at the same address and section, marking the |
12109 | first one as "first" and any others as "duplicates". This is so | |
12110 | that the bpt instruction is only inserted once. If we have a | |
12111 | permanent breakpoint at the same place as BPT, make that one the | |
12112 | official one, and the rest as duplicates. Permanent breakpoints | |
12113 | are sorted first for the same address. | |
12114 | ||
12115 | Do the same for hardware watchpoints, but also considering the | |
12116 | watchpoint's type (regular/access/read) and length. */ | |
12117 | ||
12118 | bp_loc_first = NULL; | |
12119 | wp_loc_first = NULL; | |
12120 | awp_loc_first = NULL; | |
12121 | rwp_loc_first = NULL; | |
12122 | ALL_BP_LOCATIONS (loc, locp) | |
12123 | { | |
12124 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12125 | non-NULL. */ | |
348d480f | 12126 | struct bp_location **loc_first_p; |
d3fbdd86 | 12127 | b = loc->owner; |
348d480f | 12128 | |
6f380991 | 12129 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 12130 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
12131 | /* Don't detect duplicate for tracepoint locations because they are |
12132 | never duplicated. See the comments in field `duplicate' of | |
12133 | `struct bp_location'. */ | |
348d480f | 12134 | || is_tracepoint (b)) |
b775012e LM |
12135 | { |
12136 | /* Clear the condition modification flag. */ | |
12137 | loc->condition_changed = condition_unchanged; | |
12138 | continue; | |
12139 | } | |
348d480f | 12140 | |
348d480f PA |
12141 | if (b->type == bp_hardware_watchpoint) |
12142 | loc_first_p = &wp_loc_first; | |
12143 | else if (b->type == bp_read_watchpoint) | |
12144 | loc_first_p = &rwp_loc_first; | |
12145 | else if (b->type == bp_access_watchpoint) | |
12146 | loc_first_p = &awp_loc_first; | |
12147 | else | |
12148 | loc_first_p = &bp_loc_first; | |
12149 | ||
12150 | if (*loc_first_p == NULL | |
12151 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12152 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12153 | { | |
12154 | *loc_first_p = loc; | |
12155 | loc->duplicate = 0; | |
b775012e LM |
12156 | |
12157 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12158 | { | |
12159 | loc->needs_update = 1; | |
12160 | /* Clear the condition modification flag. */ | |
12161 | loc->condition_changed = condition_unchanged; | |
12162 | } | |
348d480f PA |
12163 | continue; |
12164 | } | |
12165 | ||
934709f0 PW |
12166 | |
12167 | /* This and the above ensure the invariant that the first location | |
12168 | is not duplicated, and is the inserted one. | |
12169 | All following are marked as duplicated, and are not inserted. */ | |
12170 | if (loc->inserted) | |
12171 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12172 | loc->duplicate = 1; |
12173 | ||
b775012e LM |
12174 | /* Clear the condition modification flag. */ |
12175 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12176 | } |
12177 | ||
a25a5a45 | 12178 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12179 | { |
04086b45 | 12180 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12181 | insert_breakpoint_locations (); |
12182 | else | |
12183 | { | |
44702360 PA |
12184 | /* Even though the caller told us to not insert new |
12185 | locations, we may still need to update conditions on the | |
12186 | target's side of breakpoints that were already inserted | |
12187 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12188 | only update conditions for locations that are marked |
12189 | "needs_update". */ | |
12190 | update_inserted_breakpoint_locations (); | |
12191 | } | |
12192 | } | |
348d480f | 12193 | |
04086b45 | 12194 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12195 | download_tracepoint_locations (); |
348d480f PA |
12196 | } |
12197 | ||
12198 | void | |
12199 | breakpoint_retire_moribund (void) | |
12200 | { | |
1123588c TT |
12201 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12202 | { | |
12203 | struct bp_location *loc = moribund_locations[ix]; | |
12204 | if (--(loc->events_till_retirement) == 0) | |
12205 | { | |
12206 | decref_bp_location (&loc); | |
12207 | unordered_remove (moribund_locations, ix); | |
12208 | --ix; | |
12209 | } | |
12210 | } | |
348d480f PA |
12211 | } |
12212 | ||
12213 | static void | |
44702360 | 12214 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12215 | { |
348d480f | 12216 | |
a70b8144 | 12217 | try |
492d29ea PA |
12218 | { |
12219 | update_global_location_list (insert_mode); | |
12220 | } | |
230d2906 | 12221 | catch (const gdb_exception_error &e) |
492d29ea PA |
12222 | { |
12223 | } | |
348d480f PA |
12224 | } |
12225 | ||
12226 | /* Clear BKP from a BPS. */ | |
12227 | ||
12228 | static void | |
12229 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12230 | { | |
12231 | bpstat bs; | |
12232 | ||
12233 | for (bs = bps; bs; bs = bs->next) | |
12234 | if (bs->breakpoint_at == bpt) | |
12235 | { | |
12236 | bs->breakpoint_at = NULL; | |
12237 | bs->old_val = NULL; | |
12238 | /* bs->commands will be freed later. */ | |
12239 | } | |
12240 | } | |
12241 | ||
12242 | /* Callback for iterate_over_threads. */ | |
12243 | static int | |
12244 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12245 | { | |
9a3c8263 | 12246 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12247 | |
12248 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12249 | return 0; | |
12250 | } | |
12251 | ||
12252 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12253 | callbacks. */ | |
12254 | ||
12255 | static void | |
12256 | say_where (struct breakpoint *b) | |
12257 | { | |
12258 | struct value_print_options opts; | |
12259 | ||
12260 | get_user_print_options (&opts); | |
12261 | ||
12262 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12263 | single string. */ | |
12264 | if (b->loc == NULL) | |
12265 | { | |
f00aae0f KS |
12266 | /* For pending locations, the output differs slightly based |
12267 | on b->extra_string. If this is non-NULL, it contains either | |
12268 | a condition or dprintf arguments. */ | |
12269 | if (b->extra_string == NULL) | |
12270 | { | |
12271 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12272 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12273 | } |
12274 | else if (b->type == bp_dprintf) | |
12275 | { | |
12276 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12277 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12278 | b->extra_string); |
12279 | } | |
12280 | else | |
12281 | { | |
12282 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12283 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12284 | b->extra_string); |
12285 | } | |
348d480f PA |
12286 | } |
12287 | else | |
12288 | { | |
2f202fde | 12289 | if (opts.addressprint || b->loc->symtab == NULL) |
6a831f06 PA |
12290 | printf_filtered (" at %ps", |
12291 | styled_string (address_style.style (), | |
12292 | paddress (b->loc->gdbarch, | |
12293 | b->loc->address))); | |
2f202fde | 12294 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12295 | { |
12296 | /* If there is a single location, we can print the location | |
12297 | more nicely. */ | |
12298 | if (b->loc->next == NULL) | |
0bb296cb | 12299 | { |
6a831f06 PA |
12300 | const char *filename |
12301 | = symtab_to_filename_for_display (b->loc->symtab); | |
12302 | printf_filtered (": file %ps, line %d.", | |
12303 | styled_string (file_name_style.style (), | |
12304 | filename), | |
0bb296cb TT |
12305 | b->loc->line_number); |
12306 | } | |
f8eba3c6 TT |
12307 | else |
12308 | /* This is not ideal, but each location may have a | |
12309 | different file name, and this at least reflects the | |
12310 | real situation somewhat. */ | |
f00aae0f | 12311 | printf_filtered (": %s.", |
d28cd78a | 12312 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12313 | } |
348d480f PA |
12314 | |
12315 | if (b->loc->next) | |
12316 | { | |
12317 | struct bp_location *loc = b->loc; | |
12318 | int n = 0; | |
12319 | for (; loc; loc = loc->next) | |
12320 | ++n; | |
12321 | printf_filtered (" (%d locations)", n); | |
12322 | } | |
12323 | } | |
12324 | } | |
12325 | ||
5f486660 | 12326 | bp_location::~bp_location () |
348d480f | 12327 | { |
5f486660 | 12328 | xfree (function_name); |
348d480f PA |
12329 | } |
12330 | ||
c1fc2657 | 12331 | /* Destructor for the breakpoint base class. */ |
348d480f | 12332 | |
c1fc2657 | 12333 | breakpoint::~breakpoint () |
348d480f | 12334 | { |
c1fc2657 SM |
12335 | xfree (this->cond_string); |
12336 | xfree (this->extra_string); | |
348d480f PA |
12337 | } |
12338 | ||
2060206e PA |
12339 | static struct bp_location * |
12340 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12341 | { |
5f486660 | 12342 | return new bp_location (self); |
348d480f PA |
12343 | } |
12344 | ||
2060206e PA |
12345 | static void |
12346 | base_breakpoint_re_set (struct breakpoint *b) | |
12347 | { | |
12348 | /* Nothing to re-set. */ | |
12349 | } | |
12350 | ||
12351 | #define internal_error_pure_virtual_called() \ | |
12352 | gdb_assert_not_reached ("pure virtual function called") | |
12353 | ||
12354 | static int | |
12355 | base_breakpoint_insert_location (struct bp_location *bl) | |
12356 | { | |
12357 | internal_error_pure_virtual_called (); | |
12358 | } | |
12359 | ||
12360 | static int | |
73971819 PA |
12361 | base_breakpoint_remove_location (struct bp_location *bl, |
12362 | enum remove_bp_reason reason) | |
2060206e PA |
12363 | { |
12364 | internal_error_pure_virtual_called (); | |
12365 | } | |
12366 | ||
12367 | static int | |
12368 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12369 | const address_space *aspace, |
09ac7c10 TT |
12370 | CORE_ADDR bp_addr, |
12371 | const struct target_waitstatus *ws) | |
2060206e PA |
12372 | { |
12373 | internal_error_pure_virtual_called (); | |
12374 | } | |
12375 | ||
12376 | static void | |
12377 | base_breakpoint_check_status (bpstat bs) | |
12378 | { | |
12379 | /* Always stop. */ | |
12380 | } | |
12381 | ||
12382 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12383 | errors. */ | |
12384 | ||
12385 | static int | |
12386 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12387 | { | |
12388 | internal_error_pure_virtual_called (); | |
12389 | } | |
12390 | ||
12391 | /* A "resources_needed" breakpoint_ops method that just internal | |
12392 | errors. */ | |
12393 | ||
12394 | static int | |
12395 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12396 | { | |
12397 | internal_error_pure_virtual_called (); | |
12398 | } | |
12399 | ||
12400 | static enum print_stop_action | |
12401 | base_breakpoint_print_it (bpstat bs) | |
12402 | { | |
12403 | internal_error_pure_virtual_called (); | |
12404 | } | |
12405 | ||
12406 | static void | |
12407 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12408 | struct ui_out *uiout) | |
12409 | { | |
12410 | /* nothing */ | |
12411 | } | |
12412 | ||
12413 | static void | |
12414 | base_breakpoint_print_mention (struct breakpoint *b) | |
12415 | { | |
12416 | internal_error_pure_virtual_called (); | |
12417 | } | |
12418 | ||
12419 | static void | |
12420 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12421 | { | |
12422 | internal_error_pure_virtual_called (); | |
12423 | } | |
12424 | ||
983af33b | 12425 | static void |
f00aae0f | 12426 | base_breakpoint_create_sals_from_location |
626d2320 | 12427 | (struct event_location *location, |
f00aae0f KS |
12428 | struct linespec_result *canonical, |
12429 | enum bptype type_wanted) | |
983af33b SDJ |
12430 | { |
12431 | internal_error_pure_virtual_called (); | |
12432 | } | |
12433 | ||
12434 | static void | |
12435 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12436 | struct linespec_result *c, | |
e1e01040 PA |
12437 | gdb::unique_xmalloc_ptr<char> cond_string, |
12438 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12439 | enum bptype type_wanted, |
12440 | enum bpdisp disposition, | |
12441 | int thread, | |
12442 | int task, int ignore_count, | |
12443 | const struct breakpoint_ops *o, | |
12444 | int from_tty, int enabled, | |
44f238bb | 12445 | int internal, unsigned flags) |
983af33b SDJ |
12446 | { |
12447 | internal_error_pure_virtual_called (); | |
12448 | } | |
12449 | ||
6c5b2ebe | 12450 | static std::vector<symtab_and_line> |
f00aae0f | 12451 | base_breakpoint_decode_location (struct breakpoint *b, |
626d2320 | 12452 | struct event_location *location, |
6c5b2ebe | 12453 | struct program_space *search_pspace) |
983af33b SDJ |
12454 | { |
12455 | internal_error_pure_virtual_called (); | |
12456 | } | |
12457 | ||
ab04a2af TT |
12458 | /* The default 'explains_signal' method. */ |
12459 | ||
47591c29 | 12460 | static int |
427cd150 | 12461 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12462 | { |
47591c29 | 12463 | return 1; |
ab04a2af TT |
12464 | } |
12465 | ||
9d6e6e84 HZ |
12466 | /* The default "after_condition_true" method. */ |
12467 | ||
12468 | static void | |
12469 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12470 | { | |
12471 | /* Nothing to do. */ | |
12472 | } | |
12473 | ||
ab04a2af | 12474 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12475 | { |
2060206e PA |
12476 | base_breakpoint_allocate_location, |
12477 | base_breakpoint_re_set, | |
12478 | base_breakpoint_insert_location, | |
12479 | base_breakpoint_remove_location, | |
12480 | base_breakpoint_breakpoint_hit, | |
12481 | base_breakpoint_check_status, | |
12482 | base_breakpoint_resources_needed, | |
12483 | base_breakpoint_works_in_software_mode, | |
12484 | base_breakpoint_print_it, | |
12485 | NULL, | |
12486 | base_breakpoint_print_one_detail, | |
12487 | base_breakpoint_print_mention, | |
983af33b | 12488 | base_breakpoint_print_recreate, |
5f700d83 | 12489 | base_breakpoint_create_sals_from_location, |
983af33b | 12490 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12491 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12492 | base_breakpoint_explains_signal, |
12493 | base_breakpoint_after_condition_true, | |
2060206e PA |
12494 | }; |
12495 | ||
12496 | /* Default breakpoint_ops methods. */ | |
12497 | ||
12498 | static void | |
348d480f PA |
12499 | bkpt_re_set (struct breakpoint *b) |
12500 | { | |
06edf0c0 | 12501 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12502 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12503 | { |
f00aae0f | 12504 | /* Anything without a location can't be re-set. */ |
348d480f | 12505 | delete_breakpoint (b); |
06edf0c0 | 12506 | return; |
348d480f | 12507 | } |
06edf0c0 PA |
12508 | |
12509 | breakpoint_re_set_default (b); | |
348d480f PA |
12510 | } |
12511 | ||
2060206e | 12512 | static int |
348d480f PA |
12513 | bkpt_insert_location (struct bp_location *bl) |
12514 | { | |
cd6c3b4f YQ |
12515 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12516 | ||
579c6ad9 | 12517 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12518 | bl->target_info.placed_address = addr; |
12519 | ||
348d480f | 12520 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12521 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12522 | else |
7c16b83e | 12523 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12524 | } |
12525 | ||
2060206e | 12526 | static int |
73971819 | 12527 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12528 | { |
12529 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12530 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12531 | else | |
73971819 | 12532 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12533 | } |
12534 | ||
2060206e | 12535 | static int |
348d480f | 12536 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12537 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12538 | const struct target_waitstatus *ws) |
348d480f | 12539 | { |
09ac7c10 | 12540 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12541 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12542 | return 0; |
12543 | ||
348d480f PA |
12544 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12545 | aspace, bp_addr)) | |
12546 | return 0; | |
12547 | ||
12548 | if (overlay_debugging /* unmapped overlay section */ | |
12549 | && section_is_overlay (bl->section) | |
12550 | && !section_is_mapped (bl->section)) | |
12551 | return 0; | |
12552 | ||
12553 | return 1; | |
12554 | } | |
12555 | ||
cd1608cc PA |
12556 | static int |
12557 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12558 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12559 | const struct target_waitstatus *ws) |
12560 | { | |
12561 | if (dprintf_style == dprintf_style_agent | |
12562 | && target_can_run_breakpoint_commands ()) | |
12563 | { | |
12564 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12565 | for this address it must be for a breakpoint that happens to | |
12566 | be set at the same address. */ | |
12567 | return 0; | |
12568 | } | |
12569 | ||
12570 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12571 | } | |
12572 | ||
2060206e | 12573 | static int |
348d480f PA |
12574 | bkpt_resources_needed (const struct bp_location *bl) |
12575 | { | |
12576 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12577 | ||
12578 | return 1; | |
12579 | } | |
12580 | ||
2060206e | 12581 | static enum print_stop_action |
348d480f PA |
12582 | bkpt_print_it (bpstat bs) |
12583 | { | |
348d480f PA |
12584 | struct breakpoint *b; |
12585 | const struct bp_location *bl; | |
001c8c33 | 12586 | int bp_temp; |
79a45e25 | 12587 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12588 | |
12589 | gdb_assert (bs->bp_location_at != NULL); | |
12590 | ||
12591 | bl = bs->bp_location_at; | |
12592 | b = bs->breakpoint_at; | |
12593 | ||
001c8c33 PA |
12594 | bp_temp = b->disposition == disp_del; |
12595 | if (bl->address != bl->requested_address) | |
12596 | breakpoint_adjustment_warning (bl->requested_address, | |
12597 | bl->address, | |
12598 | b->number, 1); | |
12599 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12600 | maybe_print_thread_hit_breakpoint (uiout); |
12601 | ||
112e8700 | 12602 | if (uiout->is_mi_like_p ()) |
348d480f | 12603 | { |
112e8700 | 12604 | uiout->field_string ("reason", |
001c8c33 | 12605 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12606 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12607 | } |
6a831f06 PA |
12608 | if (bp_temp) |
12609 | uiout->message ("Temporary breakpoint %pF, ", | |
12610 | signed_field ("bkptno", b->number)); | |
12611 | else | |
12612 | uiout->message ("Breakpoint %pF, ", | |
12613 | signed_field ("bkptno", b->number)); | |
06edf0c0 | 12614 | |
001c8c33 | 12615 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12616 | } |
12617 | ||
2060206e | 12618 | static void |
06edf0c0 PA |
12619 | bkpt_print_mention (struct breakpoint *b) |
12620 | { | |
112e8700 | 12621 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12622 | return; |
12623 | ||
12624 | switch (b->type) | |
12625 | { | |
12626 | case bp_breakpoint: | |
12627 | case bp_gnu_ifunc_resolver: | |
12628 | if (b->disposition == disp_del) | |
12629 | printf_filtered (_("Temporary breakpoint")); | |
12630 | else | |
12631 | printf_filtered (_("Breakpoint")); | |
12632 | printf_filtered (_(" %d"), b->number); | |
12633 | if (b->type == bp_gnu_ifunc_resolver) | |
12634 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12635 | break; | |
12636 | case bp_hardware_breakpoint: | |
12637 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12638 | break; | |
e7e0cddf SS |
12639 | case bp_dprintf: |
12640 | printf_filtered (_("Dprintf %d"), b->number); | |
12641 | break; | |
06edf0c0 PA |
12642 | } |
12643 | ||
12644 | say_where (b); | |
12645 | } | |
12646 | ||
2060206e | 12647 | static void |
06edf0c0 PA |
12648 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12649 | { | |
12650 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12651 | fprintf_unfiltered (fp, "tbreak"); | |
12652 | else if (tp->type == bp_breakpoint) | |
12653 | fprintf_unfiltered (fp, "break"); | |
12654 | else if (tp->type == bp_hardware_breakpoint | |
12655 | && tp->disposition == disp_del) | |
12656 | fprintf_unfiltered (fp, "thbreak"); | |
12657 | else if (tp->type == bp_hardware_breakpoint) | |
12658 | fprintf_unfiltered (fp, "hbreak"); | |
12659 | else | |
12660 | internal_error (__FILE__, __LINE__, | |
12661 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12662 | ||
f00aae0f | 12663 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12664 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12665 | |
12666 | /* Print out extra_string if this breakpoint is pending. It might | |
12667 | contain, for example, conditions that were set by the user. */ | |
12668 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12669 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12670 | ||
dd11a36c | 12671 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12672 | } |
12673 | ||
983af33b | 12674 | static void |
626d2320 | 12675 | bkpt_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
12676 | struct linespec_result *canonical, |
12677 | enum bptype type_wanted) | |
983af33b | 12678 | { |
f00aae0f | 12679 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12680 | } |
12681 | ||
12682 | static void | |
12683 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12684 | struct linespec_result *canonical, | |
e1e01040 PA |
12685 | gdb::unique_xmalloc_ptr<char> cond_string, |
12686 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12687 | enum bptype type_wanted, |
12688 | enum bpdisp disposition, | |
12689 | int thread, | |
12690 | int task, int ignore_count, | |
12691 | const struct breakpoint_ops *ops, | |
12692 | int from_tty, int enabled, | |
44f238bb | 12693 | int internal, unsigned flags) |
983af33b | 12694 | { |
023fa29b | 12695 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12696 | std::move (cond_string), |
12697 | std::move (extra_string), | |
e7e0cddf | 12698 | type_wanted, |
983af33b SDJ |
12699 | disposition, thread, task, |
12700 | ignore_count, ops, from_tty, | |
44f238bb | 12701 | enabled, internal, flags); |
983af33b SDJ |
12702 | } |
12703 | ||
6c5b2ebe | 12704 | static std::vector<symtab_and_line> |
f00aae0f | 12705 | bkpt_decode_location (struct breakpoint *b, |
626d2320 | 12706 | struct event_location *location, |
6c5b2ebe | 12707 | struct program_space *search_pspace) |
983af33b | 12708 | { |
6c5b2ebe | 12709 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12710 | } |
12711 | ||
06edf0c0 PA |
12712 | /* Virtual table for internal breakpoints. */ |
12713 | ||
12714 | static void | |
12715 | internal_bkpt_re_set (struct breakpoint *b) | |
12716 | { | |
12717 | switch (b->type) | |
12718 | { | |
12719 | /* Delete overlay event and longjmp master breakpoints; they | |
12720 | will be reset later by breakpoint_re_set. */ | |
12721 | case bp_overlay_event: | |
12722 | case bp_longjmp_master: | |
12723 | case bp_std_terminate_master: | |
12724 | case bp_exception_master: | |
12725 | delete_breakpoint (b); | |
12726 | break; | |
12727 | ||
12728 | /* This breakpoint is special, it's set up when the inferior | |
12729 | starts and we really don't want to touch it. */ | |
12730 | case bp_shlib_event: | |
12731 | ||
12732 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12733 | it is set up, we do not want to touch it. */ | |
12734 | case bp_thread_event: | |
12735 | break; | |
12736 | } | |
12737 | } | |
12738 | ||
12739 | static void | |
12740 | internal_bkpt_check_status (bpstat bs) | |
12741 | { | |
a9b3a50f PA |
12742 | if (bs->breakpoint_at->type == bp_shlib_event) |
12743 | { | |
12744 | /* If requested, stop when the dynamic linker notifies GDB of | |
12745 | events. This allows the user to get control and place | |
12746 | breakpoints in initializer routines for dynamically loaded | |
12747 | objects (among other things). */ | |
12748 | bs->stop = stop_on_solib_events; | |
12749 | bs->print = stop_on_solib_events; | |
12750 | } | |
12751 | else | |
12752 | bs->stop = 0; | |
06edf0c0 PA |
12753 | } |
12754 | ||
12755 | static enum print_stop_action | |
12756 | internal_bkpt_print_it (bpstat bs) | |
12757 | { | |
06edf0c0 | 12758 | struct breakpoint *b; |
06edf0c0 | 12759 | |
06edf0c0 PA |
12760 | b = bs->breakpoint_at; |
12761 | ||
06edf0c0 PA |
12762 | switch (b->type) |
12763 | { | |
348d480f PA |
12764 | case bp_shlib_event: |
12765 | /* Did we stop because the user set the stop_on_solib_events | |
12766 | variable? (If so, we report this as a generic, "Stopped due | |
12767 | to shlib event" message.) */ | |
edcc5120 | 12768 | print_solib_event (0); |
348d480f PA |
12769 | break; |
12770 | ||
12771 | case bp_thread_event: | |
12772 | /* Not sure how we will get here. | |
12773 | GDB should not stop for these breakpoints. */ | |
12774 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12775 | break; |
12776 | ||
12777 | case bp_overlay_event: | |
12778 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12779 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12780 | break; |
12781 | ||
12782 | case bp_longjmp_master: | |
12783 | /* These should never be enabled. */ | |
12784 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12785 | break; |
12786 | ||
12787 | case bp_std_terminate_master: | |
12788 | /* These should never be enabled. */ | |
12789 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12790 | "gdb should not stop!\n")); | |
348d480f PA |
12791 | break; |
12792 | ||
12793 | case bp_exception_master: | |
12794 | /* These should never be enabled. */ | |
12795 | printf_filtered (_("Exception Master Breakpoint: " | |
12796 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12797 | break; |
12798 | } | |
12799 | ||
001c8c33 | 12800 | return PRINT_NOTHING; |
06edf0c0 PA |
12801 | } |
12802 | ||
12803 | static void | |
12804 | internal_bkpt_print_mention (struct breakpoint *b) | |
12805 | { | |
12806 | /* Nothing to mention. These breakpoints are internal. */ | |
12807 | } | |
12808 | ||
06edf0c0 PA |
12809 | /* Virtual table for momentary breakpoints */ |
12810 | ||
12811 | static void | |
12812 | momentary_bkpt_re_set (struct breakpoint *b) | |
12813 | { | |
12814 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12815 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12816 | Otherwise these should have been blown away via the cleanup chain |
12817 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12818 | } | |
12819 | ||
12820 | static void | |
12821 | momentary_bkpt_check_status (bpstat bs) | |
12822 | { | |
12823 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12824 | } | |
12825 | ||
12826 | static enum print_stop_action | |
12827 | momentary_bkpt_print_it (bpstat bs) | |
12828 | { | |
001c8c33 | 12829 | return PRINT_UNKNOWN; |
348d480f PA |
12830 | } |
12831 | ||
06edf0c0 PA |
12832 | static void |
12833 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12834 | { |
06edf0c0 | 12835 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12836 | } |
12837 | ||
e2e4d78b JK |
12838 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12839 | ||
12840 | It gets cleared already on the removal of the first one of such placed | |
12841 | breakpoints. This is OK as they get all removed altogether. */ | |
12842 | ||
c1fc2657 | 12843 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12844 | { |
c1fc2657 | 12845 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12846 | |
c1fc2657 | 12847 | if (tp != NULL) |
e2e4d78b | 12848 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12849 | } |
12850 | ||
55aa24fb SDJ |
12851 | /* Specific methods for probe breakpoints. */ |
12852 | ||
12853 | static int | |
12854 | bkpt_probe_insert_location (struct bp_location *bl) | |
12855 | { | |
12856 | int v = bkpt_insert_location (bl); | |
12857 | ||
12858 | if (v == 0) | |
12859 | { | |
12860 | /* The insertion was successful, now let's set the probe's semaphore | |
12861 | if needed. */ | |
935676c9 | 12862 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12863 | } |
12864 | ||
12865 | return v; | |
12866 | } | |
12867 | ||
12868 | static int | |
73971819 PA |
12869 | bkpt_probe_remove_location (struct bp_location *bl, |
12870 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12871 | { |
12872 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12873 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12874 | |
73971819 | 12875 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12876 | } |
12877 | ||
12878 | static void | |
626d2320 | 12879 | bkpt_probe_create_sals_from_location (struct event_location *location, |
5f700d83 | 12880 | struct linespec_result *canonical, |
f00aae0f | 12881 | enum bptype type_wanted) |
55aa24fb SDJ |
12882 | { |
12883 | struct linespec_sals lsal; | |
12884 | ||
c2f4122d | 12885 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12886 | lsal.canonical |
12887 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12888 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12889 | } |
12890 | ||
6c5b2ebe | 12891 | static std::vector<symtab_and_line> |
f00aae0f | 12892 | bkpt_probe_decode_location (struct breakpoint *b, |
626d2320 | 12893 | struct event_location *location, |
6c5b2ebe | 12894 | struct program_space *search_pspace) |
55aa24fb | 12895 | { |
6c5b2ebe PA |
12896 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12897 | if (sals.empty ()) | |
55aa24fb | 12898 | error (_("probe not found")); |
6c5b2ebe | 12899 | return sals; |
55aa24fb SDJ |
12900 | } |
12901 | ||
348d480f | 12902 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12903 | |
348d480f PA |
12904 | static void |
12905 | tracepoint_re_set (struct breakpoint *b) | |
12906 | { | |
12907 | breakpoint_re_set_default (b); | |
12908 | } | |
876fa593 | 12909 | |
348d480f PA |
12910 | static int |
12911 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12912 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12913 | const struct target_waitstatus *ws) |
348d480f PA |
12914 | { |
12915 | /* By definition, the inferior does not report stops at | |
12916 | tracepoints. */ | |
12917 | return 0; | |
74960c60 VP |
12918 | } |
12919 | ||
12920 | static void | |
348d480f PA |
12921 | tracepoint_print_one_detail (const struct breakpoint *self, |
12922 | struct ui_out *uiout) | |
74960c60 | 12923 | { |
d9b3f62e | 12924 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12925 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12926 | { |
12927 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12928 | |
6a831f06 PA |
12929 | uiout->message ("\tmarker id is %pF\n", |
12930 | string_field ("static-tracepoint-marker-string-id", | |
12931 | tp->static_trace_marker_id.c_str ())); | |
348d480f | 12932 | } |
0d381245 VP |
12933 | } |
12934 | ||
a474d7c2 | 12935 | static void |
348d480f | 12936 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12937 | { |
112e8700 | 12938 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12939 | return; |
cc59ec59 | 12940 | |
348d480f PA |
12941 | switch (b->type) |
12942 | { | |
12943 | case bp_tracepoint: | |
12944 | printf_filtered (_("Tracepoint")); | |
12945 | printf_filtered (_(" %d"), b->number); | |
12946 | break; | |
12947 | case bp_fast_tracepoint: | |
12948 | printf_filtered (_("Fast tracepoint")); | |
12949 | printf_filtered (_(" %d"), b->number); | |
12950 | break; | |
12951 | case bp_static_tracepoint: | |
12952 | printf_filtered (_("Static tracepoint")); | |
12953 | printf_filtered (_(" %d"), b->number); | |
12954 | break; | |
12955 | default: | |
12956 | internal_error (__FILE__, __LINE__, | |
12957 | _("unhandled tracepoint type %d"), (int) b->type); | |
12958 | } | |
12959 | ||
12960 | say_where (b); | |
a474d7c2 PA |
12961 | } |
12962 | ||
348d480f | 12963 | static void |
d9b3f62e | 12964 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12965 | { |
d9b3f62e PA |
12966 | struct tracepoint *tp = (struct tracepoint *) self; |
12967 | ||
12968 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12969 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12970 | else if (self->type == bp_static_tracepoint) |
348d480f | 12971 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12972 | else if (self->type == bp_tracepoint) |
348d480f PA |
12973 | fprintf_unfiltered (fp, "trace"); |
12974 | else | |
12975 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12976 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12977 | |
f00aae0f | 12978 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12979 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12980 | print_recreate_thread (self, fp); |
12981 | ||
12982 | if (tp->pass_count) | |
12983 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12984 | } |
12985 | ||
983af33b | 12986 | static void |
626d2320 | 12987 | tracepoint_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
12988 | struct linespec_result *canonical, |
12989 | enum bptype type_wanted) | |
983af33b | 12990 | { |
f00aae0f | 12991 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12992 | } |
12993 | ||
12994 | static void | |
12995 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12996 | struct linespec_result *canonical, | |
e1e01040 PA |
12997 | gdb::unique_xmalloc_ptr<char> cond_string, |
12998 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12999 | enum bptype type_wanted, |
13000 | enum bpdisp disposition, | |
13001 | int thread, | |
13002 | int task, int ignore_count, | |
13003 | const struct breakpoint_ops *ops, | |
13004 | int from_tty, int enabled, | |
44f238bb | 13005 | int internal, unsigned flags) |
983af33b | 13006 | { |
023fa29b | 13007 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
13008 | std::move (cond_string), |
13009 | std::move (extra_string), | |
e7e0cddf | 13010 | type_wanted, |
983af33b SDJ |
13011 | disposition, thread, task, |
13012 | ignore_count, ops, from_tty, | |
44f238bb | 13013 | enabled, internal, flags); |
983af33b SDJ |
13014 | } |
13015 | ||
6c5b2ebe | 13016 | static std::vector<symtab_and_line> |
f00aae0f | 13017 | tracepoint_decode_location (struct breakpoint *b, |
626d2320 | 13018 | struct event_location *location, |
6c5b2ebe | 13019 | struct program_space *search_pspace) |
983af33b | 13020 | { |
6c5b2ebe | 13021 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
13022 | } |
13023 | ||
2060206e | 13024 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13025 | |
bac7c5cf | 13026 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
13027 | |
13028 | static void | |
f00aae0f | 13029 | tracepoint_probe_create_sals_from_location |
626d2320 | 13030 | (struct event_location *location, |
f00aae0f KS |
13031 | struct linespec_result *canonical, |
13032 | enum bptype type_wanted) | |
55aa24fb SDJ |
13033 | { |
13034 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13035 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13036 | } |
13037 | ||
6c5b2ebe | 13038 | static std::vector<symtab_and_line> |
f00aae0f | 13039 | tracepoint_probe_decode_location (struct breakpoint *b, |
626d2320 | 13040 | struct event_location *location, |
6c5b2ebe | 13041 | struct program_space *search_pspace) |
55aa24fb SDJ |
13042 | { |
13043 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 13044 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
13045 | } |
13046 | ||
5c2b4418 HZ |
13047 | /* Dprintf breakpoint_ops methods. */ |
13048 | ||
13049 | static void | |
13050 | dprintf_re_set (struct breakpoint *b) | |
13051 | { | |
13052 | breakpoint_re_set_default (b); | |
13053 | ||
f00aae0f KS |
13054 | /* extra_string should never be non-NULL for dprintf. */ |
13055 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13056 | |
13057 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13058 | 2 - create a dprintf, which resolves fine. | |
13059 | 3 - disconnect from target 1 | |
13060 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13061 | ||
13062 | After steps #3/#4, you'll want the dprintf command list to | |
13063 | be updated, because target 1 and 2 may well return different | |
13064 | answers for target_can_run_breakpoint_commands(). | |
13065 | Given absence of finer grained resetting, we get to do | |
13066 | it all the time. */ | |
13067 | if (b->extra_string != NULL) | |
13068 | update_dprintf_command_list (b); | |
13069 | } | |
13070 | ||
2d9442cc HZ |
13071 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13072 | ||
13073 | static void | |
13074 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13075 | { | |
f00aae0f | 13076 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13077 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13078 | tp->extra_string); |
13079 | print_recreate_thread (tp, fp); | |
13080 | } | |
13081 | ||
9d6e6e84 HZ |
13082 | /* Implement the "after_condition_true" breakpoint_ops method for |
13083 | dprintf. | |
13084 | ||
13085 | dprintf's are implemented with regular commands in their command | |
13086 | list, but we run the commands here instead of before presenting the | |
13087 | stop to the user, as dprintf's don't actually cause a stop. This | |
13088 | also makes it so that the commands of multiple dprintfs at the same | |
13089 | address are all handled. */ | |
13090 | ||
13091 | static void | |
13092 | dprintf_after_condition_true (struct bpstats *bs) | |
13093 | { | |
04afa70c | 13094 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13095 | struct bpstats *tmp_bs_p = &tmp_bs; |
13096 | ||
13097 | /* dprintf's never cause a stop. This wasn't set in the | |
13098 | check_status hook instead because that would make the dprintf's | |
13099 | condition not be evaluated. */ | |
13100 | bs->stop = 0; | |
13101 | ||
13102 | /* Run the command list here. Take ownership of it instead of | |
13103 | copying. We never want these commands to run later in | |
13104 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13105 | be set at same address as this dprintf, or even if running the | |
13106 | commands here throws. */ | |
13107 | tmp_bs.commands = bs->commands; | |
13108 | bs->commands = NULL; | |
9d6e6e84 HZ |
13109 | |
13110 | bpstat_do_actions_1 (&tmp_bs_p); | |
13111 | ||
13112 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13113 | bpstat_do_actions_1 may return early without processing the whole | |
13114 | list. */ | |
9d6e6e84 HZ |
13115 | } |
13116 | ||
983af33b SDJ |
13117 | /* The breakpoint_ops structure to be used on static tracepoints with |
13118 | markers (`-m'). */ | |
13119 | ||
13120 | static void | |
626d2320 | 13121 | strace_marker_create_sals_from_location (struct event_location *location, |
5f700d83 | 13122 | struct linespec_result *canonical, |
f00aae0f | 13123 | enum bptype type_wanted) |
983af33b SDJ |
13124 | { |
13125 | struct linespec_sals lsal; | |
f00aae0f | 13126 | const char *arg_start, *arg; |
983af33b | 13127 | |
a20714ff | 13128 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13129 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13130 | |
f2fc3015 TT |
13131 | std::string str (arg_start, arg - arg_start); |
13132 | const char *ptr = str.c_str (); | |
a20714ff PA |
13133 | canonical->location |
13134 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13135 | |
8e9e35b1 TT |
13136 | lsal.canonical |
13137 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13138 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13139 | } |
13140 | ||
13141 | static void | |
13142 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13143 | struct linespec_result *canonical, | |
e1e01040 PA |
13144 | gdb::unique_xmalloc_ptr<char> cond_string, |
13145 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13146 | enum bptype type_wanted, |
13147 | enum bpdisp disposition, | |
13148 | int thread, | |
13149 | int task, int ignore_count, | |
13150 | const struct breakpoint_ops *ops, | |
13151 | int from_tty, int enabled, | |
44f238bb | 13152 | int internal, unsigned flags) |
983af33b | 13153 | { |
6c5b2ebe | 13154 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13155 | |
13156 | /* If the user is creating a static tracepoint by marker id | |
13157 | (strace -m MARKER_ID), then store the sals index, so that | |
13158 | breakpoint_re_set can try to match up which of the newly | |
13159 | found markers corresponds to this one, and, don't try to | |
13160 | expand multiple locations for each sal, given than SALS | |
13161 | already should contain all sals for MARKER_ID. */ | |
13162 | ||
6c5b2ebe | 13163 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13164 | { |
6c5b2ebe PA |
13165 | event_location_up location |
13166 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13167 | |
b270e6f9 | 13168 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13169 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13170 | std::move (location), NULL, |
e1e01040 PA |
13171 | std::move (cond_string), |
13172 | std::move (extra_string), | |
e7e0cddf | 13173 | type_wanted, disposition, |
983af33b | 13174 | thread, task, ignore_count, ops, |
44f238bb | 13175 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13176 | canonical->special_display); |
13177 | /* Given that its possible to have multiple markers with | |
13178 | the same string id, if the user is creating a static | |
13179 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13180 | store the sals index, so that breakpoint_re_set can | |
13181 | try to match up which of the newly found markers | |
13182 | corresponds to this one */ | |
13183 | tp->static_trace_marker_id_idx = i; | |
13184 | ||
b270e6f9 | 13185 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13186 | } |
13187 | } | |
13188 | ||
6c5b2ebe | 13189 | static std::vector<symtab_and_line> |
f00aae0f | 13190 | strace_marker_decode_location (struct breakpoint *b, |
626d2320 | 13191 | struct event_location *location, |
6c5b2ebe | 13192 | struct program_space *search_pspace) |
983af33b SDJ |
13193 | { |
13194 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13195 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13196 | |
6c5b2ebe PA |
13197 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13198 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13199 | { |
6c5b2ebe PA |
13200 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13201 | sals.resize (1); | |
13202 | return sals; | |
983af33b SDJ |
13203 | } |
13204 | else | |
5d9310c4 | 13205 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13206 | } |
13207 | ||
13208 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13209 | ||
13210 | static int | |
13211 | strace_marker_p (struct breakpoint *b) | |
13212 | { | |
13213 | return b->ops == &strace_marker_breakpoint_ops; | |
13214 | } | |
13215 | ||
53a5351d | 13216 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13217 | structures. */ |
c906108c SS |
13218 | |
13219 | void | |
fba45db2 | 13220 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13221 | { |
52f0bd74 | 13222 | struct breakpoint *b; |
c906108c | 13223 | |
8a3fe4f8 | 13224 | gdb_assert (bpt != NULL); |
c906108c | 13225 | |
4a64f543 MS |
13226 | /* Has this bp already been deleted? This can happen because |
13227 | multiple lists can hold pointers to bp's. bpstat lists are | |
13228 | especial culprits. | |
13229 | ||
13230 | One example of this happening is a watchpoint's scope bp. When | |
13231 | the scope bp triggers, we notice that the watchpoint is out of | |
13232 | scope, and delete it. We also delete its scope bp. But the | |
13233 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13234 | That bpstat is then checked for auto-deleting bp's, which are | |
13235 | deleted. | |
13236 | ||
13237 | A real solution to this problem might involve reference counts in | |
13238 | bp's, and/or giving them pointers back to their referencing | |
13239 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13240 | storage when no more references were extent. A cheaper bandaid | |
13241 | was chosen. */ | |
c906108c SS |
13242 | if (bpt->type == bp_none) |
13243 | return; | |
13244 | ||
4a64f543 MS |
13245 | /* At least avoid this stale reference until the reference counting |
13246 | of breakpoints gets resolved. */ | |
d0fb5eae | 13247 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13248 | { |
d0fb5eae | 13249 | struct breakpoint *related; |
3a5c3e22 | 13250 | struct watchpoint *w; |
d0fb5eae JK |
13251 | |
13252 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13253 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13254 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13255 | w = (struct watchpoint *) bpt; |
13256 | else | |
13257 | w = NULL; | |
13258 | if (w != NULL) | |
13259 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13260 | |
13261 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13262 | for (related = bpt; related->related_breakpoint != bpt; | |
13263 | related = related->related_breakpoint); | |
13264 | related->related_breakpoint = bpt->related_breakpoint; | |
13265 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13266 | } |
13267 | ||
a9634178 TJB |
13268 | /* watch_command_1 creates a watchpoint but only sets its number if |
13269 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13270 | a problem in that process, we'll be asked to delete the half-created | |
13271 | watchpoint. In that case, don't announce the deletion. */ | |
13272 | if (bpt->number) | |
76727919 | 13273 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13274 | |
c906108c SS |
13275 | if (breakpoint_chain == bpt) |
13276 | breakpoint_chain = bpt->next; | |
13277 | ||
c906108c SS |
13278 | ALL_BREAKPOINTS (b) |
13279 | if (b->next == bpt) | |
c5aa993b JM |
13280 | { |
13281 | b->next = bpt->next; | |
13282 | break; | |
13283 | } | |
c906108c | 13284 | |
f431efe5 PA |
13285 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13286 | been freed. */ | |
13287 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13288 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13289 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13290 | commands are associated with the bpstat; if we remove it here, | |
13291 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13292 | event-top.c won't do anything, and temporary breakpoints with | |
13293 | commands won't work. */ | |
13294 | ||
13295 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13296 | ||
4a64f543 MS |
13297 | /* Now that breakpoint is removed from breakpoint list, update the |
13298 | global location list. This will remove locations that used to | |
13299 | belong to this breakpoint. Do this before freeing the breakpoint | |
13300 | itself, since remove_breakpoint looks at location's owner. It | |
13301 | might be better design to have location completely | |
13302 | self-contained, but it's not the case now. */ | |
44702360 | 13303 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13304 | |
4a64f543 MS |
13305 | /* On the chance that someone will soon try again to delete this |
13306 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13307 | bpt->type = bp_none; |
4d01a485 | 13308 | delete bpt; |
c906108c SS |
13309 | } |
13310 | ||
51be5b68 PA |
13311 | /* Iterator function to call a user-provided callback function once |
13312 | for each of B and its related breakpoints. */ | |
13313 | ||
13314 | static void | |
13315 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13316 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13317 | { |
13318 | struct breakpoint *related; | |
13319 | ||
13320 | related = b; | |
13321 | do | |
13322 | { | |
13323 | struct breakpoint *next; | |
13324 | ||
13325 | /* FUNCTION may delete RELATED. */ | |
13326 | next = related->related_breakpoint; | |
13327 | ||
13328 | if (next == related) | |
13329 | { | |
13330 | /* RELATED is the last ring entry. */ | |
48649e1b | 13331 | function (related); |
51be5b68 PA |
13332 | |
13333 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13334 | B. There's nothing left to do anyway, so just break | |
13335 | out. */ | |
13336 | break; | |
13337 | } | |
13338 | else | |
48649e1b | 13339 | function (related); |
51be5b68 PA |
13340 | |
13341 | related = next; | |
13342 | } | |
13343 | while (related != b); | |
13344 | } | |
95a42b64 | 13345 | |
4495129a | 13346 | static void |
981a3fb3 | 13347 | delete_command (const char *arg, int from_tty) |
c906108c | 13348 | { |
35df4500 | 13349 | struct breakpoint *b, *b_tmp; |
c906108c | 13350 | |
ea9365bb TT |
13351 | dont_repeat (); |
13352 | ||
c906108c SS |
13353 | if (arg == 0) |
13354 | { | |
13355 | int breaks_to_delete = 0; | |
13356 | ||
46c6471b PA |
13357 | /* Delete all breakpoints if no argument. Do not delete |
13358 | internal breakpoints, these have to be deleted with an | |
13359 | explicit breakpoint number argument. */ | |
c5aa993b | 13360 | ALL_BREAKPOINTS (b) |
46c6471b | 13361 | if (user_breakpoint_p (b)) |
973d738b DJ |
13362 | { |
13363 | breaks_to_delete = 1; | |
13364 | break; | |
13365 | } | |
c906108c SS |
13366 | |
13367 | /* Ask user only if there are some breakpoints to delete. */ | |
13368 | if (!from_tty | |
e2e0b3e5 | 13369 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13370 | { |
35df4500 | 13371 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13372 | if (user_breakpoint_p (b)) |
c5aa993b | 13373 | delete_breakpoint (b); |
c906108c SS |
13374 | } |
13375 | } | |
13376 | else | |
48649e1b | 13377 | map_breakpoint_numbers |
b926417a | 13378 | (arg, [&] (breakpoint *br) |
48649e1b | 13379 | { |
b926417a | 13380 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13381 | }); |
c906108c SS |
13382 | } |
13383 | ||
c2f4122d PA |
13384 | /* Return true if all locations of B bound to PSPACE are pending. If |
13385 | PSPACE is NULL, all locations of all program spaces are | |
13386 | considered. */ | |
13387 | ||
0d381245 | 13388 | static int |
c2f4122d | 13389 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13390 | { |
c2f4122d PA |
13391 | struct bp_location *loc; |
13392 | ||
13393 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13394 | if ((pspace == NULL | |
13395 | || loc->pspace == pspace) | |
13396 | && !loc->shlib_disabled | |
8645ff69 | 13397 | && !loc->pspace->executing_startup) |
0d381245 VP |
13398 | return 0; |
13399 | return 1; | |
fe3f5fa8 VP |
13400 | } |
13401 | ||
776592bf DE |
13402 | /* Subroutine of update_breakpoint_locations to simplify it. |
13403 | Return non-zero if multiple fns in list LOC have the same name. | |
13404 | Null names are ignored. */ | |
13405 | ||
13406 | static int | |
13407 | ambiguous_names_p (struct bp_location *loc) | |
13408 | { | |
13409 | struct bp_location *l; | |
c1fb9836 TT |
13410 | htab_up htab (htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13411 | xcalloc, xfree)); | |
776592bf DE |
13412 | |
13413 | for (l = loc; l != NULL; l = l->next) | |
13414 | { | |
13415 | const char **slot; | |
13416 | const char *name = l->function_name; | |
13417 | ||
13418 | /* Allow for some names to be NULL, ignore them. */ | |
13419 | if (name == NULL) | |
13420 | continue; | |
13421 | ||
c1fb9836 | 13422 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 13423 | INSERT); |
4a64f543 MS |
13424 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13425 | returns NULL. */ | |
776592bf | 13426 | if (*slot != NULL) |
c1fb9836 | 13427 | return 1; |
776592bf DE |
13428 | *slot = name; |
13429 | } | |
13430 | ||
776592bf DE |
13431 | return 0; |
13432 | } | |
13433 | ||
0fb4aa4b PA |
13434 | /* When symbols change, it probably means the sources changed as well, |
13435 | and it might mean the static tracepoint markers are no longer at | |
13436 | the same address or line numbers they used to be at last we | |
13437 | checked. Losing your static tracepoints whenever you rebuild is | |
13438 | undesirable. This function tries to resync/rematch gdb static | |
13439 | tracepoints with the markers on the target, for static tracepoints | |
13440 | that have not been set by marker id. Static tracepoint that have | |
13441 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13442 | The heuristic is: | |
13443 | ||
13444 | 1) For a tracepoint set at a specific address, look for a marker at | |
13445 | the old PC. If one is found there, assume to be the same marker. | |
13446 | If the name / string id of the marker found is different from the | |
13447 | previous known name, assume that means the user renamed the marker | |
13448 | in the sources, and output a warning. | |
13449 | ||
13450 | 2) For a tracepoint set at a given line number, look for a marker | |
13451 | at the new address of the old line number. If one is found there, | |
13452 | assume to be the same marker. If the name / string id of the | |
13453 | marker found is different from the previous known name, assume that | |
13454 | means the user renamed the marker in the sources, and output a | |
13455 | warning. | |
13456 | ||
13457 | 3) If a marker is no longer found at the same address or line, it | |
13458 | may mean the marker no longer exists. But it may also just mean | |
13459 | the code changed a bit. Maybe the user added a few lines of code | |
13460 | that made the marker move up or down (in line number terms). Ask | |
13461 | the target for info about the marker with the string id as we knew | |
13462 | it. If found, update line number and address in the matching | |
13463 | static tracepoint. This will get confused if there's more than one | |
13464 | marker with the same ID (possible in UST, although unadvised | |
13465 | precisely because it confuses tools). */ | |
13466 | ||
13467 | static struct symtab_and_line | |
13468 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13469 | { | |
d9b3f62e | 13470 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13471 | struct static_tracepoint_marker marker; |
13472 | CORE_ADDR pc; | |
0fb4aa4b PA |
13473 | |
13474 | pc = sal.pc; | |
13475 | if (sal.line) | |
13476 | find_line_pc (sal.symtab, sal.line, &pc); | |
13477 | ||
13478 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13479 | { | |
5d9310c4 | 13480 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13481 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13482 | b->number, tp->static_trace_marker_id.c_str (), |
13483 | marker.str_id.c_str ()); | |
0fb4aa4b | 13484 | |
5d9310c4 | 13485 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13486 | |
13487 | return sal; | |
13488 | } | |
13489 | ||
13490 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13491 | by string ID. */ | |
13492 | if (!sal.explicit_pc | |
13493 | && sal.line != 0 | |
13494 | && sal.symtab != NULL | |
5d9310c4 | 13495 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13496 | { |
5d9310c4 SM |
13497 | std::vector<static_tracepoint_marker> markers |
13498 | = target_static_tracepoint_markers_by_strid | |
13499 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13500 | |
5d9310c4 | 13501 | if (!markers.empty ()) |
0fb4aa4b | 13502 | { |
0fb4aa4b | 13503 | struct symbol *sym; |
80e1d417 | 13504 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13505 | struct ui_out *uiout = current_uiout; |
67994074 | 13506 | struct explicit_location explicit_loc; |
0fb4aa4b | 13507 | |
5d9310c4 | 13508 | tpmarker = &markers[0]; |
0fb4aa4b | 13509 | |
5d9310c4 | 13510 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13511 | |
13512 | warning (_("marker for static tracepoint %d (%s) not " | |
13513 | "found at previous line number"), | |
5d9310c4 | 13514 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13515 | |
51abb421 | 13516 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13517 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13518 | uiout->text ("Now in "); |
0fb4aa4b PA |
13519 | if (sym) |
13520 | { | |
987012b8 | 13521 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 13522 | function_name_style.style ()); |
112e8700 | 13523 | uiout->text (" at "); |
0fb4aa4b | 13524 | } |
112e8700 | 13525 | uiout->field_string ("file", |
cbe56571 | 13526 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 13527 | file_name_style.style ()); |
112e8700 | 13528 | uiout->text (":"); |
0fb4aa4b | 13529 | |
112e8700 | 13530 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13531 | { |
0b0865da | 13532 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13533 | |
112e8700 | 13534 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13535 | } |
13536 | ||
381befee | 13537 | uiout->field_signed ("line", sal2.line); |
112e8700 | 13538 | uiout->text ("\n"); |
0fb4aa4b | 13539 | |
80e1d417 | 13540 | b->loc->line_number = sal2.line; |
2f202fde | 13541 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13542 | |
d28cd78a | 13543 | b->location.reset (NULL); |
67994074 KS |
13544 | initialize_explicit_location (&explicit_loc); |
13545 | explicit_loc.source_filename | |
00e52e53 | 13546 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13547 | explicit_loc.line_offset.offset = b->loc->line_number; |
13548 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13549 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13550 | |
13551 | /* Might be nice to check if function changed, and warn if | |
13552 | so. */ | |
0fb4aa4b PA |
13553 | } |
13554 | } | |
13555 | return sal; | |
13556 | } | |
13557 | ||
8d3788bd VP |
13558 | /* Returns 1 iff locations A and B are sufficiently same that |
13559 | we don't need to report breakpoint as changed. */ | |
13560 | ||
13561 | static int | |
13562 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13563 | { | |
13564 | while (a && b) | |
13565 | { | |
13566 | if (a->address != b->address) | |
13567 | return 0; | |
13568 | ||
13569 | if (a->shlib_disabled != b->shlib_disabled) | |
13570 | return 0; | |
13571 | ||
13572 | if (a->enabled != b->enabled) | |
13573 | return 0; | |
13574 | ||
b5fa468f TBA |
13575 | if (a->disabled_by_cond != b->disabled_by_cond) |
13576 | return 0; | |
13577 | ||
8d3788bd VP |
13578 | a = a->next; |
13579 | b = b->next; | |
13580 | } | |
13581 | ||
13582 | if ((a == NULL) != (b == NULL)) | |
13583 | return 0; | |
13584 | ||
13585 | return 1; | |
13586 | } | |
13587 | ||
c2f4122d PA |
13588 | /* Split all locations of B that are bound to PSPACE out of B's |
13589 | location list to a separate list and return that list's head. If | |
13590 | PSPACE is NULL, hoist out all locations of B. */ | |
13591 | ||
13592 | static struct bp_location * | |
13593 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13594 | { | |
13595 | struct bp_location head; | |
13596 | struct bp_location *i = b->loc; | |
13597 | struct bp_location **i_link = &b->loc; | |
13598 | struct bp_location *hoisted = &head; | |
13599 | ||
13600 | if (pspace == NULL) | |
13601 | { | |
13602 | i = b->loc; | |
13603 | b->loc = NULL; | |
13604 | return i; | |
13605 | } | |
13606 | ||
13607 | head.next = NULL; | |
13608 | ||
13609 | while (i != NULL) | |
13610 | { | |
13611 | if (i->pspace == pspace) | |
13612 | { | |
13613 | *i_link = i->next; | |
13614 | i->next = NULL; | |
13615 | hoisted->next = i; | |
13616 | hoisted = i; | |
13617 | } | |
13618 | else | |
13619 | i_link = &i->next; | |
13620 | i = *i_link; | |
13621 | } | |
13622 | ||
13623 | return head.next; | |
13624 | } | |
13625 | ||
13626 | /* Create new breakpoint locations for B (a hardware or software | |
13627 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13628 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13629 | FILTER_PSPACE. Locations of other program spaces are left | |
13630 | untouched. */ | |
f1310107 | 13631 | |
0e30163f | 13632 | void |
0d381245 | 13633 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13634 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13635 | gdb::array_view<const symtab_and_line> sals, |
13636 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13637 | { |
c2f4122d | 13638 | struct bp_location *existing_locations; |
0d381245 | 13639 | |
6c5b2ebe | 13640 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13641 | { |
13642 | /* Ranged breakpoints have only one start location and one end | |
13643 | location. */ | |
13644 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13645 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13646 | "multiple locations found\n"), | |
13647 | b->number); | |
13648 | return; | |
13649 | } | |
f1310107 | 13650 | |
4a64f543 MS |
13651 | /* If there's no new locations, and all existing locations are |
13652 | pending, don't do anything. This optimizes the common case where | |
13653 | all locations are in the same shared library, that was unloaded. | |
13654 | We'd like to retain the location, so that when the library is | |
13655 | loaded again, we don't loose the enabled/disabled status of the | |
13656 | individual locations. */ | |
6c5b2ebe | 13657 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13658 | return; |
13659 | ||
c2f4122d | 13660 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13661 | |
6c5b2ebe | 13662 | for (const auto &sal : sals) |
fe3f5fa8 | 13663 | { |
f8eba3c6 TT |
13664 | struct bp_location *new_loc; |
13665 | ||
6c5b2ebe | 13666 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13667 | |
6c5b2ebe | 13668 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13669 | |
0d381245 VP |
13670 | /* Reparse conditions, they might contain references to the |
13671 | old symtab. */ | |
13672 | if (b->cond_string != NULL) | |
13673 | { | |
bbc13ae3 | 13674 | const char *s; |
fe3f5fa8 | 13675 | |
0d381245 | 13676 | s = b->cond_string; |
a70b8144 | 13677 | try |
0d381245 | 13678 | { |
6c5b2ebe PA |
13679 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13680 | block_for_pc (sal.pc), | |
0d381245 VP |
13681 | 0); |
13682 | } | |
230d2906 | 13683 | catch (const gdb_exception_error &e) |
0d381245 | 13684 | { |
b5fa468f | 13685 | new_loc->disabled_by_cond = true; |
0d381245 VP |
13686 | } |
13687 | } | |
fe3f5fa8 | 13688 | |
6c5b2ebe | 13689 | if (!sals_end.empty ()) |
f1310107 | 13690 | { |
6c5b2ebe | 13691 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13692 | |
6c5b2ebe | 13693 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13694 | } |
0d381245 | 13695 | } |
fe3f5fa8 | 13696 | |
4a64f543 MS |
13697 | /* If possible, carry over 'disable' status from existing |
13698 | breakpoints. */ | |
0d381245 VP |
13699 | { |
13700 | struct bp_location *e = existing_locations; | |
776592bf DE |
13701 | /* If there are multiple breakpoints with the same function name, |
13702 | e.g. for inline functions, comparing function names won't work. | |
13703 | Instead compare pc addresses; this is just a heuristic as things | |
13704 | may have moved, but in practice it gives the correct answer | |
13705 | often enough until a better solution is found. */ | |
13706 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13707 | ||
0d381245 VP |
13708 | for (; e; e = e->next) |
13709 | { | |
b5fa468f | 13710 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 VP |
13711 | { |
13712 | struct bp_location *l = b->loc; | |
776592bf DE |
13713 | if (have_ambiguous_names) |
13714 | { | |
13715 | for (; l; l = l->next) | |
7f32a4d5 PA |
13716 | { |
13717 | /* Ignore software vs hardware location type at | |
13718 | this point, because with "set breakpoint | |
13719 | auto-hw", after a re-set, locations that were | |
13720 | hardware can end up as software, or vice versa. | |
13721 | As mentioned above, this is an heuristic and in | |
13722 | practice should give the correct answer often | |
13723 | enough. */ | |
13724 | if (breakpoint_locations_match (e, l, true)) | |
13725 | { | |
b5fa468f TBA |
13726 | l->enabled = e->enabled; |
13727 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
13728 | break; |
13729 | } | |
13730 | } | |
776592bf DE |
13731 | } |
13732 | else | |
13733 | { | |
13734 | for (; l; l = l->next) | |
13735 | if (l->function_name | |
13736 | && strcmp (e->function_name, l->function_name) == 0) | |
13737 | { | |
b5fa468f TBA |
13738 | l->enabled = e->enabled; |
13739 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
13740 | break; |
13741 | } | |
13742 | } | |
0d381245 VP |
13743 | } |
13744 | } | |
13745 | } | |
fe3f5fa8 | 13746 | |
8d3788bd | 13747 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13748 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13749 | } |
13750 | ||
f00aae0f | 13751 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13752 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13753 | ||
6c5b2ebe | 13754 | static std::vector<symtab_and_line> |
f00aae0f | 13755 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13756 | struct program_space *search_pspace, int *found) |
ef23e705 | 13757 | { |
cc06b668 | 13758 | struct gdb_exception exception; |
ef23e705 | 13759 | |
983af33b | 13760 | gdb_assert (b->ops != NULL); |
ef23e705 | 13761 | |
6c5b2ebe PA |
13762 | std::vector<symtab_and_line> sals; |
13763 | ||
a70b8144 | 13764 | try |
ef23e705 | 13765 | { |
6c5b2ebe | 13766 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13767 | } |
94aeb44b | 13768 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13769 | { |
13770 | int not_found_and_ok = 0; | |
492d29ea | 13771 | |
ef23e705 TJB |
13772 | /* For pending breakpoints, it's expected that parsing will |
13773 | fail until the right shared library is loaded. User has | |
13774 | already told to create pending breakpoints and don't need | |
13775 | extra messages. If breakpoint is in bp_shlib_disabled | |
13776 | state, then user already saw the message about that | |
13777 | breakpoint being disabled, and don't want to see more | |
13778 | errors. */ | |
58438ac1 | 13779 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13780 | && (b->condition_not_parsed |
13781 | || (b->loc != NULL | |
13782 | && search_pspace != NULL | |
13783 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13784 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13785 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13786 | || b->enable_state == bp_disabled)) |
13787 | not_found_and_ok = 1; | |
13788 | ||
13789 | if (!not_found_and_ok) | |
13790 | { | |
13791 | /* We surely don't want to warn about the same breakpoint | |
13792 | 10 times. One solution, implemented here, is disable | |
13793 | the breakpoint on error. Another solution would be to | |
13794 | have separate 'warning emitted' flag. Since this | |
13795 | happens only when a binary has changed, I don't know | |
13796 | which approach is better. */ | |
13797 | b->enable_state = bp_disabled; | |
eedc3f4f | 13798 | throw; |
ef23e705 | 13799 | } |
94aeb44b TT |
13800 | |
13801 | exception = std::move (e); | |
ef23e705 TJB |
13802 | } |
13803 | ||
492d29ea | 13804 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13805 | { |
6c5b2ebe PA |
13806 | for (auto &sal : sals) |
13807 | resolve_sal_pc (&sal); | |
f00aae0f | 13808 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13809 | { |
ed1d1739 KS |
13810 | char *cond_string, *extra_string; |
13811 | int thread, task; | |
ef23e705 | 13812 | |
b5fa468f TBA |
13813 | find_condition_and_thread_for_sals (sals, b->extra_string, |
13814 | &cond_string, &thread, | |
13815 | &task, &extra_string); | |
f00aae0f | 13816 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13817 | if (cond_string) |
13818 | b->cond_string = cond_string; | |
13819 | b->thread = thread; | |
13820 | b->task = task; | |
e7e0cddf | 13821 | if (extra_string) |
f00aae0f KS |
13822 | { |
13823 | xfree (b->extra_string); | |
13824 | b->extra_string = extra_string; | |
13825 | } | |
ef23e705 TJB |
13826 | b->condition_not_parsed = 0; |
13827 | } | |
13828 | ||
983af33b | 13829 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13830 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13831 | |
58438ac1 TT |
13832 | *found = 1; |
13833 | } | |
13834 | else | |
13835 | *found = 0; | |
ef23e705 TJB |
13836 | |
13837 | return sals; | |
13838 | } | |
13839 | ||
348d480f PA |
13840 | /* The default re_set method, for typical hardware or software |
13841 | breakpoints. Reevaluate the breakpoint and recreate its | |
13842 | locations. */ | |
13843 | ||
13844 | static void | |
28010a5d | 13845 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13846 | { |
c2f4122d | 13847 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13848 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13849 | |
6c5b2ebe PA |
13850 | int found; |
13851 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13852 | filter_pspace, &found); | |
ef23e705 | 13853 | if (found) |
6c5b2ebe | 13854 | expanded = std::move (sals); |
ef23e705 | 13855 | |
f00aae0f | 13856 | if (b->location_range_end != NULL) |
f1310107 | 13857 | { |
6c5b2ebe PA |
13858 | std::vector<symtab_and_line> sals_end |
13859 | = location_to_sals (b, b->location_range_end.get (), | |
13860 | filter_pspace, &found); | |
f1310107 | 13861 | if (found) |
6c5b2ebe | 13862 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13863 | } |
13864 | ||
c2f4122d | 13865 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13866 | } |
13867 | ||
983af33b SDJ |
13868 | /* Default method for creating SALs from an address string. It basically |
13869 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13870 | ||
13871 | static void | |
626d2320 | 13872 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
13873 | struct linespec_result *canonical, |
13874 | enum bptype type_wanted) | |
983af33b | 13875 | { |
f00aae0f | 13876 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13877 | } |
13878 | ||
13879 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13880 | function for the `create_breakpoints_sal' method of | |
13881 | breakpoint_ops. */ | |
13882 | ||
13883 | static void | |
13884 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13885 | struct linespec_result *canonical, | |
e1e01040 PA |
13886 | gdb::unique_xmalloc_ptr<char> cond_string, |
13887 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13888 | enum bptype type_wanted, |
13889 | enum bpdisp disposition, | |
13890 | int thread, | |
13891 | int task, int ignore_count, | |
13892 | const struct breakpoint_ops *ops, | |
13893 | int from_tty, int enabled, | |
44f238bb | 13894 | int internal, unsigned flags) |
983af33b | 13895 | { |
e1e01040 PA |
13896 | create_breakpoints_sal (gdbarch, canonical, |
13897 | std::move (cond_string), | |
13898 | std::move (extra_string), | |
983af33b SDJ |
13899 | type_wanted, disposition, |
13900 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13901 | enabled, internal, flags); |
983af33b SDJ |
13902 | } |
13903 | ||
13904 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13905 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13906 | |
6c5b2ebe | 13907 | static std::vector<symtab_and_line> |
f00aae0f | 13908 | decode_location_default (struct breakpoint *b, |
626d2320 | 13909 | struct event_location *location, |
6c5b2ebe | 13910 | struct program_space *search_pspace) |
983af33b SDJ |
13911 | { |
13912 | struct linespec_result canonical; | |
13913 | ||
c2f4122d | 13914 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13915 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 13916 | b->filter.get ()); |
983af33b SDJ |
13917 | |
13918 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13919 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13920 | |
6c5b2ebe | 13921 | if (!canonical.lsals.empty ()) |
983af33b | 13922 | { |
6c5b2ebe PA |
13923 | const linespec_sals &lsal = canonical.lsals[0]; |
13924 | return std::move (lsal.sals); | |
983af33b | 13925 | } |
6c5b2ebe | 13926 | return {}; |
983af33b SDJ |
13927 | } |
13928 | ||
bf469271 | 13929 | /* Reset a breakpoint. */ |
c906108c | 13930 | |
bf469271 PA |
13931 | static void |
13932 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13933 | { |
fdf44873 TT |
13934 | input_radix = b->input_radix; |
13935 | set_language (b->language); | |
c906108c | 13936 | |
348d480f | 13937 | b->ops->re_set (b); |
c906108c SS |
13938 | } |
13939 | ||
c2f4122d PA |
13940 | /* Re-set breakpoint locations for the current program space. |
13941 | Locations bound to other program spaces are left untouched. */ | |
13942 | ||
c906108c | 13943 | void |
69de3c6a | 13944 | breakpoint_re_set (void) |
c906108c | 13945 | { |
35df4500 | 13946 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13947 | |
c5aa993b | 13948 | { |
fdf44873 TT |
13949 | scoped_restore_current_language save_language; |
13950 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13951 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13952 | |
8e817061 JB |
13953 | /* breakpoint_re_set_one sets the current_language to the language |
13954 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13955 | before re-evaluating the breakpoint's location. This change can | |
13956 | unfortunately get undone by accident if the language_mode is set | |
13957 | to auto, and we either switch frames, or more likely in this context, | |
13958 | we select the current frame. | |
13959 | ||
13960 | We prevent this by temporarily turning the language_mode to | |
13961 | language_mode_manual. We restore it once all breakpoints | |
13962 | have been reset. */ | |
13963 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13964 | language_mode = language_mode_manual; | |
13965 | ||
5ed8105e PA |
13966 | /* Note: we must not try to insert locations until after all |
13967 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13968 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13969 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13970 | |
5ed8105e PA |
13971 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13972 | { | |
a70b8144 | 13973 | try |
bf469271 PA |
13974 | { |
13975 | breakpoint_re_set_one (b); | |
13976 | } | |
230d2906 | 13977 | catch (const gdb_exception &ex) |
bf469271 PA |
13978 | { |
13979 | exception_fprintf (gdb_stderr, ex, | |
13980 | "Error in re-setting breakpoint %d: ", | |
13981 | b->number); | |
13982 | } | |
5ed8105e | 13983 | } |
5ed8105e PA |
13984 | |
13985 | jit_breakpoint_re_set (); | |
13986 | } | |
6c95b8df | 13987 | |
af02033e PP |
13988 | create_overlay_event_breakpoint (); |
13989 | create_longjmp_master_breakpoint (); | |
13990 | create_std_terminate_master_breakpoint (); | |
186c406b | 13991 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13992 | |
13993 | /* Now we can insert. */ | |
13994 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13995 | } |
13996 | \f | |
c906108c SS |
13997 | /* Reset the thread number of this breakpoint: |
13998 | ||
13999 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14000 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14001 | void |
fba45db2 | 14002 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14003 | { |
14004 | if (b->thread != -1) | |
14005 | { | |
00431a78 | 14006 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
14007 | |
14008 | /* We're being called after following a fork. The new fork is | |
14009 | selected as current, and unless this was a vfork will have a | |
14010 | different program space from the original thread. Reset that | |
14011 | as well. */ | |
14012 | b->loc->pspace = current_program_space; | |
c906108c SS |
14013 | } |
14014 | } | |
14015 | ||
03ac34d5 MS |
14016 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14017 | If from_tty is nonzero, it prints a message to that effect, | |
14018 | which ends with a period (no newline). */ | |
14019 | ||
c906108c | 14020 | void |
fba45db2 | 14021 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14022 | { |
52f0bd74 | 14023 | struct breakpoint *b; |
c906108c SS |
14024 | |
14025 | if (count < 0) | |
14026 | count = 0; | |
14027 | ||
14028 | ALL_BREAKPOINTS (b) | |
14029 | if (b->number == bptnum) | |
c5aa993b | 14030 | { |
d77f58be SS |
14031 | if (is_tracepoint (b)) |
14032 | { | |
14033 | if (from_tty && count != 0) | |
14034 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14035 | bptnum); | |
14036 | return; | |
14037 | } | |
14038 | ||
c5aa993b | 14039 | b->ignore_count = count; |
221ea385 KS |
14040 | if (from_tty) |
14041 | { | |
14042 | if (count == 0) | |
3e43a32a MS |
14043 | printf_filtered (_("Will stop next time " |
14044 | "breakpoint %d is reached."), | |
221ea385 KS |
14045 | bptnum); |
14046 | else if (count == 1) | |
a3f17187 | 14047 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14048 | bptnum); |
14049 | else | |
3e43a32a MS |
14050 | printf_filtered (_("Will ignore next %d " |
14051 | "crossings of breakpoint %d."), | |
221ea385 KS |
14052 | count, bptnum); |
14053 | } | |
76727919 | 14054 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
14055 | return; |
14056 | } | |
c906108c | 14057 | |
8a3fe4f8 | 14058 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14059 | } |
14060 | ||
c906108c SS |
14061 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14062 | ||
14063 | static void | |
0b39b52e | 14064 | ignore_command (const char *args, int from_tty) |
c906108c | 14065 | { |
0b39b52e | 14066 | const char *p = args; |
52f0bd74 | 14067 | int num; |
c906108c SS |
14068 | |
14069 | if (p == 0) | |
e2e0b3e5 | 14070 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14071 | |
c906108c | 14072 | num = get_number (&p); |
5c44784c | 14073 | if (num == 0) |
8a3fe4f8 | 14074 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14075 | if (*p == 0) |
8a3fe4f8 | 14076 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14077 | |
14078 | set_ignore_count (num, | |
14079 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14080 | from_tty); | |
221ea385 KS |
14081 | if (from_tty) |
14082 | printf_filtered ("\n"); | |
c906108c SS |
14083 | } |
14084 | \f | |
d0fe4701 XR |
14085 | |
14086 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14087 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14088 | |
14089 | static void | |
d0fe4701 XR |
14090 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14091 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14092 | { |
d0fe4701 XR |
14093 | if (bp_num_range.first == 0) |
14094 | { | |
14095 | warning (_("bad breakpoint number at or near '%d'"), | |
14096 | bp_num_range.first); | |
14097 | } | |
14098 | else | |
c906108c | 14099 | { |
d0fe4701 | 14100 | struct breakpoint *b, *tmp; |
197f0a60 | 14101 | |
d0fe4701 | 14102 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14103 | { |
d0fe4701 XR |
14104 | bool match = false; |
14105 | ||
5c44784c | 14106 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14107 | if (b->number == i) |
5c44784c | 14108 | { |
bfd28288 | 14109 | match = true; |
48649e1b | 14110 | function (b); |
11cf8741 | 14111 | break; |
5c44784c | 14112 | } |
bfd28288 | 14113 | if (!match) |
d0fe4701 | 14114 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14115 | } |
c906108c SS |
14116 | } |
14117 | } | |
14118 | ||
d0fe4701 XR |
14119 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14120 | ARGS. */ | |
14121 | ||
14122 | static void | |
14123 | map_breakpoint_numbers (const char *args, | |
14124 | gdb::function_view<void (breakpoint *)> function) | |
14125 | { | |
14126 | if (args == NULL || *args == '\0') | |
14127 | error_no_arg (_("one or more breakpoint numbers")); | |
14128 | ||
14129 | number_or_range_parser parser (args); | |
14130 | ||
14131 | while (!parser.finished ()) | |
14132 | { | |
14133 | int num = parser.get_number (); | |
14134 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14135 | } | |
14136 | } | |
14137 | ||
14138 | /* Return the breakpoint location structure corresponding to the | |
14139 | BP_NUM and LOC_NUM values. */ | |
14140 | ||
0d381245 | 14141 | static struct bp_location * |
d0fe4701 | 14142 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14143 | { |
0d381245 | 14144 | struct breakpoint *b; |
0d381245 VP |
14145 | |
14146 | ALL_BREAKPOINTS (b) | |
14147 | if (b->number == bp_num) | |
14148 | { | |
14149 | break; | |
14150 | } | |
14151 | ||
14152 | if (!b || b->number != bp_num) | |
d0fe4701 | 14153 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14154 | |
0d381245 | 14155 | if (loc_num == 0) |
d0fe4701 | 14156 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14157 | |
d0fe4701 XR |
14158 | int n = 0; |
14159 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14160 | if (++n == loc_num) | |
14161 | return loc; | |
14162 | ||
14163 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14164 | } |
14165 | ||
95e95a6d PA |
14166 | /* Modes of operation for extract_bp_num. */ |
14167 | enum class extract_bp_kind | |
14168 | { | |
14169 | /* Extracting a breakpoint number. */ | |
14170 | bp, | |
14171 | ||
14172 | /* Extracting a location number. */ | |
14173 | loc, | |
14174 | }; | |
14175 | ||
14176 | /* Extract a breakpoint or location number (as determined by KIND) | |
14177 | from the string starting at START. TRAILER is a character which | |
14178 | can be found after the number. If you don't want a trailer, use | |
14179 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14180 | string. This always returns a positive integer. */ | |
14181 | ||
14182 | static int | |
14183 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14184 | int trailer, const char **end_out = NULL) | |
14185 | { | |
14186 | const char *end = start; | |
14187 | int num = get_number_trailer (&end, trailer); | |
14188 | if (num < 0) | |
14189 | error (kind == extract_bp_kind::bp | |
14190 | ? _("Negative breakpoint number '%.*s'") | |
14191 | : _("Negative breakpoint location number '%.*s'"), | |
14192 | int (end - start), start); | |
14193 | if (num == 0) | |
14194 | error (kind == extract_bp_kind::bp | |
14195 | ? _("Bad breakpoint number '%.*s'") | |
14196 | : _("Bad breakpoint location number '%.*s'"), | |
14197 | int (end - start), start); | |
14198 | ||
14199 | if (end_out != NULL) | |
14200 | *end_out = end; | |
14201 | return num; | |
14202 | } | |
14203 | ||
14204 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14205 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14206 | representing the (inclusive) range. The returned pair's elements | |
14207 | are always positive integers. */ | |
14208 | ||
14209 | static std::pair<int, int> | |
14210 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14211 | const std::string &arg, | |
14212 | std::string::size_type arg_offset) | |
14213 | { | |
14214 | std::pair<int, int> range; | |
14215 | const char *bp_loc = &arg[arg_offset]; | |
14216 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14217 | if (dash != std::string::npos) | |
14218 | { | |
14219 | /* bp_loc is a range (x-z). */ | |
14220 | if (arg.length () == dash + 1) | |
14221 | error (kind == extract_bp_kind::bp | |
14222 | ? _("Bad breakpoint number at or near: '%s'") | |
14223 | : _("Bad breakpoint location number at or near: '%s'"), | |
14224 | bp_loc); | |
14225 | ||
14226 | const char *end; | |
14227 | const char *start_first = bp_loc; | |
14228 | const char *start_second = &arg[dash + 1]; | |
14229 | range.first = extract_bp_num (kind, start_first, '-'); | |
14230 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14231 | ||
14232 | if (range.first > range.second) | |
14233 | error (kind == extract_bp_kind::bp | |
14234 | ? _("Inverted breakpoint range at '%.*s'") | |
14235 | : _("Inverted breakpoint location range at '%.*s'"), | |
14236 | int (end - start_first), start_first); | |
14237 | } | |
14238 | else | |
14239 | { | |
14240 | /* bp_loc is a single value. */ | |
14241 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14242 | range.second = range.first; | |
14243 | } | |
14244 | return range; | |
14245 | } | |
14246 | ||
d0fe4701 XR |
14247 | /* Extract the breakpoint/location range specified by ARG. Returns |
14248 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14249 | BP_LOC_RANGE. | |
14250 | ||
14251 | ARG may be in any of the following forms: | |
14252 | ||
14253 | x where 'x' is a breakpoint number. | |
14254 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14255 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14256 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14257 | location number range. | |
14258 | */ | |
14259 | ||
cc638e86 | 14260 | static void |
d0fe4701 XR |
14261 | extract_bp_number_and_location (const std::string &arg, |
14262 | std::pair<int, int> &bp_num_range, | |
14263 | std::pair<int, int> &bp_loc_range) | |
14264 | { | |
14265 | std::string::size_type dot = arg.find ('.'); | |
14266 | ||
14267 | if (dot != std::string::npos) | |
14268 | { | |
14269 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14270 | ||
14271 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14272 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14273 | |
95e95a6d PA |
14274 | bp_num_range.first |
14275 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14276 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14277 | |
95e95a6d PA |
14278 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14279 | arg, dot + 1); | |
d0fe4701 XR |
14280 | } |
14281 | else | |
14282 | { | |
14283 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14284 | |
95e95a6d | 14285 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14286 | bp_loc_range.first = 0; |
14287 | bp_loc_range.second = 0; | |
14288 | } | |
d0fe4701 XR |
14289 | } |
14290 | ||
14291 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14292 | specifies whether to enable or disable. */ | |
14293 | ||
14294 | static void | |
14295 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14296 | { | |
14297 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14298 | if (loc != NULL) | |
14299 | { | |
b5fa468f TBA |
14300 | if (loc->disabled_by_cond && enable) |
14301 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
14302 | "cannot enable."), bp_num, loc_num); | |
14303 | ||
d0fe4701 XR |
14304 | if (loc->enabled != enable) |
14305 | { | |
14306 | loc->enabled = enable; | |
14307 | mark_breakpoint_location_modified (loc); | |
14308 | } | |
14309 | if (target_supports_enable_disable_tracepoint () | |
14310 | && current_trace_status ()->running && loc->owner | |
14311 | && is_tracepoint (loc->owner)) | |
14312 | target_disable_tracepoint (loc); | |
14313 | } | |
14314 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14315 | |
14316 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14317 | } |
14318 | ||
14319 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14320 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14321 | (inclusive) range of location numbers of that breakpoint to | |
14322 | enable/disable. ENABLE specifies whether to enable or disable the | |
14323 | location. */ | |
14324 | ||
14325 | static void | |
14326 | enable_disable_breakpoint_location_range (int bp_num, | |
14327 | std::pair<int, int> &bp_loc_range, | |
14328 | bool enable) | |
14329 | { | |
14330 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14331 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14332 | } | |
0d381245 | 14333 | |
1900040c MS |
14334 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14335 | If from_tty is nonzero, it prints a message to that effect, | |
14336 | which ends with a period (no newline). */ | |
14337 | ||
c906108c | 14338 | void |
fba45db2 | 14339 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14340 | { |
14341 | /* Never disable a watchpoint scope breakpoint; we want to | |
14342 | hit them when we leave scope so we can delete both the | |
14343 | watchpoint and its scope breakpoint at that time. */ | |
14344 | if (bpt->type == bp_watchpoint_scope) | |
14345 | return; | |
14346 | ||
b5de0fa7 | 14347 | bpt->enable_state = bp_disabled; |
c906108c | 14348 | |
b775012e LM |
14349 | /* Mark breakpoint locations modified. */ |
14350 | mark_breakpoint_modified (bpt); | |
14351 | ||
d248b706 KY |
14352 | if (target_supports_enable_disable_tracepoint () |
14353 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14354 | { | |
14355 | struct bp_location *location; | |
14356 | ||
14357 | for (location = bpt->loc; location; location = location->next) | |
14358 | target_disable_tracepoint (location); | |
14359 | } | |
14360 | ||
44702360 | 14361 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14362 | |
76727919 | 14363 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14364 | } |
14365 | ||
d0fe4701 XR |
14366 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14367 | specified in ARGS. ARGS may be in any of the formats handled by | |
14368 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14369 | or disable the breakpoints/locations. */ | |
14370 | ||
c906108c | 14371 | static void |
d0fe4701 | 14372 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14373 | { |
c906108c | 14374 | if (args == 0) |
46c6471b PA |
14375 | { |
14376 | struct breakpoint *bpt; | |
14377 | ||
14378 | ALL_BREAKPOINTS (bpt) | |
14379 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14380 | { |
14381 | if (enable) | |
14382 | enable_breakpoint (bpt); | |
14383 | else | |
14384 | disable_breakpoint (bpt); | |
14385 | } | |
46c6471b | 14386 | } |
9eaabc75 | 14387 | else |
0d381245 | 14388 | { |
cb791d59 | 14389 | std::string num = extract_arg (&args); |
9eaabc75 | 14390 | |
cb791d59 | 14391 | while (!num.empty ()) |
d248b706 | 14392 | { |
d0fe4701 | 14393 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14394 | |
cc638e86 PA |
14395 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14396 | ||
14397 | if (bp_loc_range.first == bp_loc_range.second | |
14398 | && bp_loc_range.first == 0) | |
d0fe4701 | 14399 | { |
cc638e86 PA |
14400 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14401 | map_breakpoint_number_range (bp_num_range, | |
14402 | enable | |
14403 | ? enable_breakpoint | |
14404 | : disable_breakpoint); | |
14405 | } | |
14406 | else | |
14407 | { | |
14408 | /* Handle breakpoint ids with formats 'x.y' or | |
14409 | 'x.y-z'. */ | |
14410 | enable_disable_breakpoint_location_range | |
14411 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14412 | } |
9eaabc75 | 14413 | num = extract_arg (&args); |
d248b706 | 14414 | } |
0d381245 | 14415 | } |
c906108c SS |
14416 | } |
14417 | ||
d0fe4701 XR |
14418 | /* The disable command disables the specified breakpoints/locations |
14419 | (or all defined breakpoints) so they're no longer effective in | |
14420 | stopping the inferior. ARGS may be in any of the forms defined in | |
14421 | extract_bp_number_and_location. */ | |
14422 | ||
14423 | static void | |
14424 | disable_command (const char *args, int from_tty) | |
14425 | { | |
14426 | enable_disable_command (args, from_tty, false); | |
14427 | } | |
14428 | ||
c906108c | 14429 | static void |
816338b5 SS |
14430 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14431 | int count) | |
c906108c | 14432 | { |
afe38095 | 14433 | int target_resources_ok; |
c906108c SS |
14434 | |
14435 | if (bpt->type == bp_hardware_breakpoint) | |
14436 | { | |
14437 | int i; | |
c5aa993b | 14438 | i = hw_breakpoint_used_count (); |
53a5351d | 14439 | target_resources_ok = |
d92524f1 | 14440 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14441 | i + 1, 0); |
c906108c | 14442 | if (target_resources_ok == 0) |
8a3fe4f8 | 14443 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14444 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14445 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14446 | } |
14447 | ||
cc60f2e3 | 14448 | if (is_watchpoint (bpt)) |
c906108c | 14449 | { |
d07205c2 | 14450 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14451 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14452 | |
a70b8144 | 14453 | try |
c906108c | 14454 | { |
3a5c3e22 PA |
14455 | struct watchpoint *w = (struct watchpoint *) bpt; |
14456 | ||
1e718ff1 TJB |
14457 | orig_enable_state = bpt->enable_state; |
14458 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14459 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14460 | } |
230d2906 | 14461 | catch (const gdb_exception &e) |
c5aa993b | 14462 | { |
1e718ff1 | 14463 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14464 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14465 | bpt->number); | |
14466 | return; | |
c5aa993b | 14467 | } |
c906108c | 14468 | } |
0101ce28 | 14469 | |
b775012e LM |
14470 | bpt->enable_state = bp_enabled; |
14471 | ||
14472 | /* Mark breakpoint locations modified. */ | |
14473 | mark_breakpoint_modified (bpt); | |
14474 | ||
d248b706 KY |
14475 | if (target_supports_enable_disable_tracepoint () |
14476 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14477 | { | |
14478 | struct bp_location *location; | |
14479 | ||
14480 | for (location = bpt->loc; location; location = location->next) | |
14481 | target_enable_tracepoint (location); | |
14482 | } | |
14483 | ||
b4c291bb | 14484 | bpt->disposition = disposition; |
816338b5 | 14485 | bpt->enable_count = count; |
44702360 | 14486 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14487 | |
76727919 | 14488 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14489 | } |
14490 | ||
fe3f5fa8 | 14491 | |
c906108c | 14492 | void |
fba45db2 | 14493 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14494 | { |
816338b5 | 14495 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14496 | } |
14497 | ||
d0fe4701 XR |
14498 | /* The enable command enables the specified breakpoints/locations (or |
14499 | all defined breakpoints) so they once again become (or continue to | |
14500 | be) effective in stopping the inferior. ARGS may be in any of the | |
14501 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14502 | |
c906108c | 14503 | static void |
981a3fb3 | 14504 | enable_command (const char *args, int from_tty) |
c906108c | 14505 | { |
d0fe4701 | 14506 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14507 | } |
14508 | ||
c906108c | 14509 | static void |
4495129a | 14510 | enable_once_command (const char *args, int from_tty) |
c906108c | 14511 | { |
48649e1b TT |
14512 | map_breakpoint_numbers |
14513 | (args, [&] (breakpoint *b) | |
14514 | { | |
14515 | iterate_over_related_breakpoints | |
14516 | (b, [&] (breakpoint *bpt) | |
14517 | { | |
14518 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14519 | }); | |
14520 | }); | |
816338b5 SS |
14521 | } |
14522 | ||
14523 | static void | |
4495129a | 14524 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14525 | { |
b9d61307 SM |
14526 | int count; |
14527 | ||
14528 | if (args == NULL) | |
14529 | error_no_arg (_("hit count")); | |
14530 | ||
14531 | count = get_number (&args); | |
816338b5 | 14532 | |
48649e1b TT |
14533 | map_breakpoint_numbers |
14534 | (args, [&] (breakpoint *b) | |
14535 | { | |
14536 | iterate_over_related_breakpoints | |
14537 | (b, [&] (breakpoint *bpt) | |
14538 | { | |
14539 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14540 | }); | |
14541 | }); | |
c906108c SS |
14542 | } |
14543 | ||
c906108c | 14544 | static void |
4495129a | 14545 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14546 | { |
48649e1b TT |
14547 | map_breakpoint_numbers |
14548 | (args, [&] (breakpoint *b) | |
14549 | { | |
14550 | iterate_over_related_breakpoints | |
14551 | (b, [&] (breakpoint *bpt) | |
14552 | { | |
14553 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14554 | }); | |
14555 | }); | |
c906108c SS |
14556 | } |
14557 | \f | |
1f3b5d1b PP |
14558 | /* Invalidate last known value of any hardware watchpoint if |
14559 | the memory which that value represents has been written to by | |
14560 | GDB itself. */ | |
14561 | ||
14562 | static void | |
8de0566d YQ |
14563 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14564 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14565 | const bfd_byte *data) |
14566 | { | |
14567 | struct breakpoint *bp; | |
14568 | ||
14569 | ALL_BREAKPOINTS (bp) | |
14570 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14571 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14572 | { |
3a5c3e22 | 14573 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14574 | |
850645cf | 14575 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14576 | { |
14577 | struct bp_location *loc; | |
14578 | ||
14579 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14580 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14581 | && loc->address + loc->length > addr | |
14582 | && addr + len > loc->address) | |
14583 | { | |
3a5c3e22 | 14584 | wp->val = NULL; |
4c1d86d9 | 14585 | wp->val_valid = false; |
3a5c3e22 PA |
14586 | } |
14587 | } | |
1f3b5d1b PP |
14588 | } |
14589 | } | |
14590 | ||
8181d85f DJ |
14591 | /* Create and insert a breakpoint for software single step. */ |
14592 | ||
14593 | void | |
6c95b8df | 14594 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14595 | const address_space *aspace, |
4a64f543 | 14596 | CORE_ADDR next_pc) |
8181d85f | 14597 | { |
7c16b83e PA |
14598 | struct thread_info *tp = inferior_thread (); |
14599 | struct symtab_and_line sal; | |
14600 | CORE_ADDR pc = next_pc; | |
8181d85f | 14601 | |
34b7e8a6 PA |
14602 | if (tp->control.single_step_breakpoints == NULL) |
14603 | { | |
14604 | tp->control.single_step_breakpoints | |
5d5658a1 | 14605 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14606 | } |
8181d85f | 14607 | |
7c16b83e PA |
14608 | sal = find_pc_line (pc, 0); |
14609 | sal.pc = pc; | |
14610 | sal.section = find_pc_overlay (pc); | |
14611 | sal.explicit_pc = 1; | |
34b7e8a6 | 14612 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14613 | |
7c16b83e | 14614 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14615 | } |
14616 | ||
93f9a11f YQ |
14617 | /* Insert single step breakpoints according to the current state. */ |
14618 | ||
14619 | int | |
14620 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14621 | { | |
f5ea389a | 14622 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14623 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14624 | |
f5ea389a | 14625 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14626 | |
a0ff9e1a | 14627 | if (!next_pcs.empty ()) |
93f9a11f | 14628 | { |
f5ea389a | 14629 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14630 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14631 | |
a0ff9e1a | 14632 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14633 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14634 | ||
93f9a11f YQ |
14635 | return 1; |
14636 | } | |
14637 | else | |
14638 | return 0; | |
14639 | } | |
14640 | ||
34b7e8a6 | 14641 | /* See breakpoint.h. */ |
f02253f1 HZ |
14642 | |
14643 | int | |
7c16b83e | 14644 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14645 | const address_space *aspace, |
7c16b83e | 14646 | CORE_ADDR pc) |
1aafd4da | 14647 | { |
7c16b83e | 14648 | struct bp_location *loc; |
1aafd4da | 14649 | |
7c16b83e PA |
14650 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14651 | if (loc->inserted | |
14652 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14653 | return 1; | |
1aafd4da | 14654 | |
7c16b83e | 14655 | return 0; |
ef370185 JB |
14656 | } |
14657 | ||
14658 | /* Check whether a software single-step breakpoint is inserted at | |
14659 | PC. */ | |
14660 | ||
14661 | int | |
accd0bcd | 14662 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14663 | CORE_ADDR pc) |
14664 | { | |
34b7e8a6 PA |
14665 | struct breakpoint *bpt; |
14666 | ||
14667 | ALL_BREAKPOINTS (bpt) | |
14668 | { | |
14669 | if (bpt->type == bp_single_step | |
14670 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14671 | return 1; | |
14672 | } | |
14673 | return 0; | |
1aafd4da UW |
14674 | } |
14675 | ||
1042e4c0 SS |
14676 | /* Tracepoint-specific operations. */ |
14677 | ||
14678 | /* Set tracepoint count to NUM. */ | |
14679 | static void | |
14680 | set_tracepoint_count (int num) | |
14681 | { | |
14682 | tracepoint_count = num; | |
4fa62494 | 14683 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14684 | } |
14685 | ||
70221824 | 14686 | static void |
0b39b52e | 14687 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14688 | { |
ffc2605c TT |
14689 | event_location_up location = string_to_event_location (&arg, |
14690 | current_language); | |
bac7c5cf GB |
14691 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
14692 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 14693 | |
558a9d82 | 14694 | create_breakpoint (get_current_arch (), |
ffc2605c | 14695 | location.get (), |
f00aae0f | 14696 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14697 | 0 /* tempflag */, |
14698 | bp_tracepoint /* type_wanted */, | |
14699 | 0 /* Ignore count */, | |
14700 | pending_break_support, | |
14701 | ops, | |
14702 | from_tty, | |
14703 | 1 /* enabled */, | |
14704 | 0 /* internal */, 0); | |
1042e4c0 SS |
14705 | } |
14706 | ||
70221824 | 14707 | static void |
0b39b52e | 14708 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14709 | { |
ffc2605c TT |
14710 | event_location_up location = string_to_event_location (&arg, |
14711 | current_language); | |
558a9d82 | 14712 | create_breakpoint (get_current_arch (), |
ffc2605c | 14713 | location.get (), |
f00aae0f | 14714 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14715 | 0 /* tempflag */, |
14716 | bp_fast_tracepoint /* type_wanted */, | |
14717 | 0 /* Ignore count */, | |
14718 | pending_break_support, | |
14719 | &tracepoint_breakpoint_ops, | |
14720 | from_tty, | |
14721 | 1 /* enabled */, | |
14722 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14723 | } |
14724 | ||
14725 | /* strace command implementation. Creates a static tracepoint. */ | |
14726 | ||
70221824 | 14727 | static void |
0b39b52e | 14728 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14729 | { |
983af33b | 14730 | struct breakpoint_ops *ops; |
ffc2605c | 14731 | event_location_up location; |
983af33b SDJ |
14732 | |
14733 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14734 | or with a normal static tracepoint. */ | |
61012eef | 14735 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14736 | { |
14737 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14738 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14739 | } |
983af33b | 14740 | else |
f00aae0f KS |
14741 | { |
14742 | ops = &tracepoint_breakpoint_ops; | |
14743 | location = string_to_event_location (&arg, current_language); | |
14744 | } | |
983af33b | 14745 | |
558a9d82 | 14746 | create_breakpoint (get_current_arch (), |
ffc2605c | 14747 | location.get (), |
f00aae0f | 14748 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14749 | 0 /* tempflag */, |
14750 | bp_static_tracepoint /* type_wanted */, | |
14751 | 0 /* Ignore count */, | |
14752 | pending_break_support, | |
14753 | ops, | |
14754 | from_tty, | |
14755 | 1 /* enabled */, | |
14756 | 0 /* internal */, 0); | |
7a697b8d SS |
14757 | } |
14758 | ||
409873ef SS |
14759 | /* Set up a fake reader function that gets command lines from a linked |
14760 | list that was acquired during tracepoint uploading. */ | |
14761 | ||
14762 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14763 | static int next_cmd; |
409873ef SS |
14764 | |
14765 | static char * | |
14766 | read_uploaded_action (void) | |
14767 | { | |
a18ba4e4 | 14768 | char *rslt = nullptr; |
409873ef | 14769 | |
a18ba4e4 SM |
14770 | if (next_cmd < this_utp->cmd_strings.size ()) |
14771 | { | |
67aa1f3c | 14772 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14773 | next_cmd++; |
14774 | } | |
409873ef SS |
14775 | |
14776 | return rslt; | |
14777 | } | |
14778 | ||
00bf0b85 SS |
14779 | /* Given information about a tracepoint as recorded on a target (which |
14780 | can be either a live system or a trace file), attempt to create an | |
14781 | equivalent GDB tracepoint. This is not a reliable process, since | |
14782 | the target does not necessarily have all the information used when | |
14783 | the tracepoint was originally defined. */ | |
14784 | ||
d9b3f62e | 14785 | struct tracepoint * |
00bf0b85 | 14786 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14787 | { |
f2fc3015 TT |
14788 | const char *addr_str; |
14789 | char small_buf[100]; | |
d9b3f62e | 14790 | struct tracepoint *tp; |
fd9b8c24 | 14791 | |
409873ef | 14792 | if (utp->at_string) |
67aa1f3c | 14793 | addr_str = utp->at_string.get (); |
409873ef SS |
14794 | else |
14795 | { | |
14796 | /* In the absence of a source location, fall back to raw | |
14797 | address. Since there is no way to confirm that the address | |
14798 | means the same thing as when the trace was started, warn the | |
14799 | user. */ | |
3e43a32a MS |
14800 | warning (_("Uploaded tracepoint %d has no " |
14801 | "source location, using raw address"), | |
409873ef | 14802 | utp->number); |
8c042590 | 14803 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14804 | addr_str = small_buf; |
14805 | } | |
14806 | ||
14807 | /* There's not much we can do with a sequence of bytecodes. */ | |
14808 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14809 | warning (_("Uploaded tracepoint %d condition " |
14810 | "has no source form, ignoring it"), | |
409873ef | 14811 | utp->number); |
d5551862 | 14812 | |
ffc2605c TT |
14813 | event_location_up location = string_to_event_location (&addr_str, |
14814 | current_language); | |
8cdf0e15 | 14815 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14816 | location.get (), |
67aa1f3c | 14817 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14818 | 0 /* parse cond/thread */, |
8cdf0e15 | 14819 | 0 /* tempflag */, |
0fb4aa4b | 14820 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14821 | 0 /* Ignore count */, |
14822 | pending_break_support, | |
348d480f | 14823 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14824 | 0 /* from_tty */, |
84f4c1fe | 14825 | utp->enabled /* enabled */, |
44f238bb PA |
14826 | 0 /* internal */, |
14827 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14828 | return NULL; |
fd9b8c24 | 14829 | |
409873ef | 14830 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14831 | tp = get_tracepoint (tracepoint_count); |
14832 | gdb_assert (tp != NULL); | |
d5551862 | 14833 | |
00bf0b85 SS |
14834 | if (utp->pass > 0) |
14835 | { | |
8c042590 | 14836 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14837 | tp->number); |
00bf0b85 | 14838 | |
409873ef | 14839 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14840 | } |
14841 | ||
409873ef SS |
14842 | /* If we have uploaded versions of the original commands, set up a |
14843 | special-purpose "reader" function and call the usual command line | |
14844 | reader, then pass the result to the breakpoint command-setting | |
14845 | function. */ | |
a18ba4e4 | 14846 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14847 | { |
12973681 | 14848 | counted_command_line cmd_list; |
00bf0b85 | 14849 | |
409873ef | 14850 | this_utp = utp; |
3149d8c1 | 14851 | next_cmd = 0; |
d5551862 | 14852 | |
60b3cef2 | 14853 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14854 | |
c1fc2657 | 14855 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14856 | } |
a18ba4e4 SM |
14857 | else if (!utp->actions.empty () |
14858 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14859 | warning (_("Uploaded tracepoint %d actions " |
14860 | "have no source form, ignoring them"), | |
409873ef | 14861 | utp->number); |
00bf0b85 | 14862 | |
f196051f | 14863 | /* Copy any status information that might be available. */ |
c1fc2657 | 14864 | tp->hit_count = utp->hit_count; |
f196051f SS |
14865 | tp->traceframe_usage = utp->traceframe_usage; |
14866 | ||
00bf0b85 | 14867 | return tp; |
d9b3f62e | 14868 | } |
00bf0b85 | 14869 | |
1042e4c0 SS |
14870 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14871 | omitted. */ | |
14872 | ||
14873 | static void | |
1d12d88f | 14874 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14875 | { |
79a45e25 | 14876 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14877 | int num_printed; |
1042e4c0 | 14878 | |
5c458ae8 | 14879 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
14880 | |
14881 | if (num_printed == 0) | |
1042e4c0 | 14882 | { |
e5a67952 | 14883 | if (args == NULL || *args == '\0') |
112e8700 | 14884 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14885 | else |
112e8700 | 14886 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14887 | } |
ad443146 SS |
14888 | |
14889 | default_collect_info (); | |
1042e4c0 SS |
14890 | } |
14891 | ||
4a64f543 | 14892 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14893 | Not supported by all targets. */ |
14894 | static void | |
5fed81ff | 14895 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14896 | { |
14897 | enable_command (args, from_tty); | |
14898 | } | |
14899 | ||
4a64f543 | 14900 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14901 | Not supported by all targets. */ |
14902 | static void | |
5fed81ff | 14903 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14904 | { |
14905 | disable_command (args, from_tty); | |
14906 | } | |
14907 | ||
4a64f543 | 14908 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14909 | static void |
4495129a | 14910 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14911 | { |
35df4500 | 14912 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14913 | |
14914 | dont_repeat (); | |
14915 | ||
14916 | if (arg == 0) | |
14917 | { | |
14918 | int breaks_to_delete = 0; | |
14919 | ||
14920 | /* Delete all breakpoints if no argument. | |
14921 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14922 | have to be deleted with an explicit breakpoint number |
14923 | argument. */ | |
1042e4c0 | 14924 | ALL_TRACEPOINTS (b) |
46c6471b | 14925 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14926 | { |
14927 | breaks_to_delete = 1; | |
14928 | break; | |
14929 | } | |
1042e4c0 SS |
14930 | |
14931 | /* Ask user only if there are some breakpoints to delete. */ | |
14932 | if (!from_tty | |
14933 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14934 | { | |
35df4500 | 14935 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14936 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14937 | delete_breakpoint (b); |
1042e4c0 SS |
14938 | } |
14939 | } | |
14940 | else | |
48649e1b | 14941 | map_breakpoint_numbers |
b926417a | 14942 | (arg, [&] (breakpoint *br) |
48649e1b | 14943 | { |
b926417a | 14944 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14945 | }); |
1042e4c0 SS |
14946 | } |
14947 | ||
197f0a60 TT |
14948 | /* Helper function for trace_pass_command. */ |
14949 | ||
14950 | static void | |
d9b3f62e | 14951 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14952 | { |
d9b3f62e | 14953 | tp->pass_count = count; |
76727919 | 14954 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14955 | if (from_tty) |
14956 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14957 | tp->number, count); |
197f0a60 TT |
14958 | } |
14959 | ||
1042e4c0 SS |
14960 | /* Set passcount for tracepoint. |
14961 | ||
14962 | First command argument is passcount, second is tracepoint number. | |
14963 | If tracepoint number omitted, apply to most recently defined. | |
14964 | Also accepts special argument "all". */ | |
14965 | ||
14966 | static void | |
0b39b52e | 14967 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14968 | { |
d9b3f62e | 14969 | struct tracepoint *t1; |
0b39b52e | 14970 | ULONGEST count; |
1042e4c0 SS |
14971 | |
14972 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14973 | error (_("passcount command requires an " |
14974 | "argument (count + optional TP num)")); | |
1042e4c0 | 14975 | |
0b39b52e | 14976 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14977 | |
529480d0 | 14978 | args = skip_spaces (args); |
1042e4c0 SS |
14979 | if (*args && strncasecmp (args, "all", 3) == 0) |
14980 | { | |
d9b3f62e PA |
14981 | struct breakpoint *b; |
14982 | ||
1042e4c0 | 14983 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14984 | if (*args) |
14985 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14986 | |
d9b3f62e | 14987 | ALL_TRACEPOINTS (b) |
197f0a60 | 14988 | { |
d9b3f62e | 14989 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14990 | trace_pass_set_count (t1, count, from_tty); |
14991 | } | |
14992 | } | |
14993 | else if (*args == '\0') | |
1042e4c0 | 14994 | { |
5fa1d40e | 14995 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14996 | if (t1) |
197f0a60 TT |
14997 | trace_pass_set_count (t1, count, from_tty); |
14998 | } | |
14999 | else | |
15000 | { | |
bfd28288 PA |
15001 | number_or_range_parser parser (args); |
15002 | while (!parser.finished ()) | |
1042e4c0 | 15003 | { |
bfd28288 | 15004 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
15005 | if (t1) |
15006 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15007 | } |
15008 | } | |
1042e4c0 SS |
15009 | } |
15010 | ||
d9b3f62e | 15011 | struct tracepoint * |
1042e4c0 SS |
15012 | get_tracepoint (int num) |
15013 | { | |
15014 | struct breakpoint *t; | |
15015 | ||
15016 | ALL_TRACEPOINTS (t) | |
15017 | if (t->number == num) | |
d9b3f62e | 15018 | return (struct tracepoint *) t; |
1042e4c0 SS |
15019 | |
15020 | return NULL; | |
15021 | } | |
15022 | ||
d5551862 SS |
15023 | /* Find the tracepoint with the given target-side number (which may be |
15024 | different from the tracepoint number after disconnecting and | |
15025 | reconnecting). */ | |
15026 | ||
d9b3f62e | 15027 | struct tracepoint * |
d5551862 SS |
15028 | get_tracepoint_by_number_on_target (int num) |
15029 | { | |
d9b3f62e | 15030 | struct breakpoint *b; |
d5551862 | 15031 | |
d9b3f62e PA |
15032 | ALL_TRACEPOINTS (b) |
15033 | { | |
15034 | struct tracepoint *t = (struct tracepoint *) b; | |
15035 | ||
15036 | if (t->number_on_target == num) | |
15037 | return t; | |
15038 | } | |
d5551862 SS |
15039 | |
15040 | return NULL; | |
15041 | } | |
15042 | ||
1042e4c0 | 15043 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15044 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15045 | If the argument is missing, the most recent tracepoint |
15046 | (tracepoint_count) is returned. */ | |
15047 | ||
d9b3f62e | 15048 | struct tracepoint * |
0b39b52e | 15049 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 15050 | number_or_range_parser *parser) |
1042e4c0 | 15051 | { |
1042e4c0 SS |
15052 | struct breakpoint *t; |
15053 | int tpnum; | |
0b39b52e | 15054 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 15055 | |
bfd28288 | 15056 | if (parser != NULL) |
197f0a60 | 15057 | { |
bfd28288 PA |
15058 | gdb_assert (!parser->finished ()); |
15059 | tpnum = parser->get_number (); | |
197f0a60 TT |
15060 | } |
15061 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15062 | tpnum = tracepoint_count; |
1042e4c0 | 15063 | else |
197f0a60 | 15064 | tpnum = get_number (arg); |
1042e4c0 SS |
15065 | |
15066 | if (tpnum <= 0) | |
15067 | { | |
15068 | if (instring && *instring) | |
15069 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15070 | instring); | |
15071 | else | |
5fa1d40e | 15072 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15073 | return NULL; |
15074 | } | |
15075 | ||
15076 | ALL_TRACEPOINTS (t) | |
15077 | if (t->number == tpnum) | |
15078 | { | |
d9b3f62e | 15079 | return (struct tracepoint *) t; |
1042e4c0 SS |
15080 | } |
15081 | ||
1042e4c0 SS |
15082 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15083 | return NULL; | |
15084 | } | |
15085 | ||
d9b3f62e PA |
15086 | void |
15087 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15088 | { | |
15089 | if (b->thread != -1) | |
15090 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15091 | ||
15092 | if (b->task != 0) | |
15093 | fprintf_unfiltered (fp, " task %d", b->task); | |
15094 | ||
15095 | fprintf_unfiltered (fp, "\n"); | |
15096 | } | |
15097 | ||
6149aea9 PA |
15098 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15099 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15100 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 15101 | true. */ |
6149aea9 | 15102 | |
1042e4c0 | 15103 | static void |
4495129a | 15104 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 15105 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15106 | { |
15107 | struct breakpoint *tp; | |
6149aea9 | 15108 | int any = 0; |
6149aea9 | 15109 | int extra_trace_bits = 0; |
1042e4c0 | 15110 | |
6149aea9 PA |
15111 | if (filename == 0 || *filename == 0) |
15112 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15113 | |
15114 | /* See if we have anything to save. */ | |
6149aea9 | 15115 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15116 | { |
6149aea9 | 15117 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15118 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15119 | continue; |
15120 | ||
15121 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15122 | if (filter && !filter (tp)) | |
15123 | continue; | |
15124 | ||
15125 | any = 1; | |
15126 | ||
15127 | if (is_tracepoint (tp)) | |
15128 | { | |
15129 | extra_trace_bits = 1; | |
15130 | ||
15131 | /* We can stop searching. */ | |
15132 | break; | |
15133 | } | |
1042e4c0 | 15134 | } |
6149aea9 PA |
15135 | |
15136 | if (!any) | |
1042e4c0 | 15137 | { |
6149aea9 | 15138 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15139 | return; |
15140 | } | |
15141 | ||
ee0c3293 | 15142 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15143 | |
15144 | stdio_file fp; | |
15145 | ||
ee0c3293 | 15146 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15147 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15148 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15149 | |
6149aea9 | 15150 | if (extra_trace_bits) |
d7e74731 | 15151 | save_trace_state_variables (&fp); |
8bf6485c | 15152 | |
6149aea9 | 15153 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15154 | { |
6149aea9 | 15155 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15156 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15157 | continue; |
8bf6485c | 15158 | |
6149aea9 PA |
15159 | /* If we have a filter, only save the breakpoints it accepts. */ |
15160 | if (filter && !filter (tp)) | |
15161 | continue; | |
15162 | ||
d7e74731 | 15163 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15164 | |
6149aea9 PA |
15165 | /* Note, we can't rely on tp->number for anything, as we can't |
15166 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15167 | instead. */ | |
15168 | ||
15169 | if (tp->cond_string) | |
d7e74731 | 15170 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15171 | |
15172 | if (tp->ignore_count) | |
d7e74731 | 15173 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15174 | |
2d9442cc | 15175 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15176 | { |
d7e74731 | 15177 | fp.puts (" commands\n"); |
a7bdde9e | 15178 | |
d7e74731 | 15179 | current_uiout->redirect (&fp); |
a70b8144 | 15180 | try |
1042e4c0 | 15181 | { |
d1b0a7bf | 15182 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15183 | } |
230d2906 | 15184 | catch (const gdb_exception &ex) |
492d29ea | 15185 | { |
112e8700 | 15186 | current_uiout->redirect (NULL); |
eedc3f4f | 15187 | throw; |
492d29ea | 15188 | } |
1042e4c0 | 15189 | |
112e8700 | 15190 | current_uiout->redirect (NULL); |
d7e74731 | 15191 | fp.puts (" end\n"); |
1042e4c0 | 15192 | } |
6149aea9 PA |
15193 | |
15194 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15195 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15196 | |
15197 | /* If this is a multi-location breakpoint, check if the locations | |
15198 | should be individually disabled. Watchpoint locations are | |
15199 | special, and not user visible. */ | |
15200 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15201 | { | |
15202 | struct bp_location *loc; | |
15203 | int n = 1; | |
15204 | ||
15205 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15206 | if (!loc->enabled) | |
d7e74731 | 15207 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15208 | } |
1042e4c0 | 15209 | } |
8bf6485c | 15210 | |
6149aea9 | 15211 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15212 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15213 | |
1042e4c0 | 15214 | if (from_tty) |
ee0c3293 | 15215 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15216 | } |
15217 | ||
15218 | /* The `save breakpoints' command. */ | |
15219 | ||
15220 | static void | |
4495129a | 15221 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15222 | { |
15223 | save_breakpoints (args, from_tty, NULL); | |
15224 | } | |
15225 | ||
15226 | /* The `save tracepoints' command. */ | |
15227 | ||
15228 | static void | |
4495129a | 15229 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15230 | { |
15231 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15232 | } |
15233 | ||
15234 | /* Create a vector of all tracepoints. */ | |
15235 | ||
f51e0e20 | 15236 | std::vector<breakpoint *> |
eeae04df | 15237 | all_tracepoints (void) |
1042e4c0 | 15238 | { |
f51e0e20 | 15239 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15240 | struct breakpoint *tp; |
15241 | ||
15242 | ALL_TRACEPOINTS (tp) | |
15243 | { | |
f51e0e20 | 15244 | tp_vec.push_back (tp); |
1042e4c0 SS |
15245 | } |
15246 | ||
15247 | return tp_vec; | |
15248 | } | |
15249 | ||
c906108c | 15250 | \f |
629500fa KS |
15251 | /* This help string is used to consolidate all the help string for specifying |
15252 | locations used by several commands. */ | |
15253 | ||
15254 | #define LOCATION_HELP_STRING \ | |
15255 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15256 | source filename, function name, label name, and line number.\n\ | |
15257 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15258 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15259 | \"factorial.c:fact:the_top\".\n\ | |
15260 | \n\ | |
15261 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15262 | program. Example: To specify the fourth byte past the start function\n\ | |
15263 | \"main\", use \"*main + 4\".\n\ | |
15264 | \n\ | |
15265 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15266 | syntax to specify location parameters.\n\ | |
15267 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15268 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15269 | -function fact -label the_top\".\n\ |
15270 | \n\ | |
15271 | By default, a specified function is matched against the program's\n\ | |
15272 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15273 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15274 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15275 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15276 | specified name as a complete fully-qualified name instead." |
629500fa | 15277 | |
4a64f543 MS |
15278 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15279 | commands. It is defined as a macro to prevent duplication. | |
15280 | COMMAND should be a string constant containing the name of the | |
15281 | command. */ | |
629500fa | 15282 | |
31e2b00f | 15283 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
15284 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
15285 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
15286 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
15287 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15288 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15289 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15290 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15291 | below.\n\ | |
15292 | \n\ | |
dc10affe PA |
15293 | With no LOCATION, uses current execution address of the selected\n\ |
15294 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15295 | \n\ |
15296 | THREADNUM is the number from \"info threads\".\n\ | |
15297 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
15298 | \n\ |
15299 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
15300 | it is invalid for all current locations.\n\ | |
89549d7f | 15301 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15302 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15303 | conditions are different.\n\ | |
31e2b00f AS |
15304 | \n\ |
15305 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15306 | ||
44feb3ce TT |
15307 | /* List of subcommands for "catch". */ |
15308 | static struct cmd_list_element *catch_cmdlist; | |
15309 | ||
15310 | /* List of subcommands for "tcatch". */ | |
15311 | static struct cmd_list_element *tcatch_cmdlist; | |
15312 | ||
9ac4176b | 15313 | void |
a121b7c1 | 15314 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15315 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15316 | completer_ftype *completer, |
44feb3ce TT |
15317 | void *user_data_catch, |
15318 | void *user_data_tcatch) | |
15319 | { | |
15320 | struct cmd_list_element *command; | |
15321 | ||
0450cc4c | 15322 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15323 | &catch_cmdlist); |
15324 | set_cmd_sfunc (command, sfunc); | |
15325 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15326 | set_cmd_completer (command, completer); |
44feb3ce | 15327 | |
0450cc4c | 15328 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15329 | &tcatch_cmdlist); |
15330 | set_cmd_sfunc (command, sfunc); | |
15331 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15332 | set_cmd_completer (command, completer); |
44feb3ce TT |
15333 | } |
15334 | ||
84f4c1fe | 15335 | struct breakpoint * |
95da600f | 15336 | iterate_over_breakpoints (gdb::function_view<bool (breakpoint *)> callback) |
84f4c1fe | 15337 | { |
35df4500 | 15338 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15339 | |
35df4500 | 15340 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe | 15341 | { |
95da600f | 15342 | if (callback (b)) |
84f4c1fe PM |
15343 | return b; |
15344 | } | |
15345 | ||
15346 | return NULL; | |
15347 | } | |
15348 | ||
0574c78f GB |
15349 | /* Zero if any of the breakpoint's locations could be a location where |
15350 | functions have been inlined, nonzero otherwise. */ | |
15351 | ||
15352 | static int | |
15353 | is_non_inline_function (struct breakpoint *b) | |
15354 | { | |
15355 | /* The shared library event breakpoint is set on the address of a | |
15356 | non-inline function. */ | |
15357 | if (b->type == bp_shlib_event) | |
15358 | return 1; | |
15359 | ||
15360 | return 0; | |
15361 | } | |
15362 | ||
15363 | /* Nonzero if the specified PC cannot be a location where functions | |
15364 | have been inlined. */ | |
15365 | ||
15366 | int | |
accd0bcd | 15367 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15368 | const struct target_waitstatus *ws) |
0574c78f GB |
15369 | { |
15370 | struct breakpoint *b; | |
15371 | struct bp_location *bl; | |
15372 | ||
15373 | ALL_BREAKPOINTS (b) | |
15374 | { | |
15375 | if (!is_non_inline_function (b)) | |
15376 | continue; | |
15377 | ||
15378 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15379 | { | |
15380 | if (!bl->shlib_disabled | |
09ac7c10 | 15381 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15382 | return 1; |
15383 | } | |
15384 | } | |
15385 | ||
15386 | return 0; | |
15387 | } | |
15388 | ||
2f202fde JK |
15389 | /* Remove any references to OBJFILE which is going to be freed. */ |
15390 | ||
15391 | void | |
15392 | breakpoint_free_objfile (struct objfile *objfile) | |
15393 | { | |
15394 | struct bp_location **locp, *loc; | |
15395 | ||
15396 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15397 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15398 | loc->symtab = NULL; |
15399 | } | |
15400 | ||
2060206e PA |
15401 | void |
15402 | initialize_breakpoint_ops (void) | |
15403 | { | |
15404 | static int initialized = 0; | |
15405 | ||
15406 | struct breakpoint_ops *ops; | |
15407 | ||
15408 | if (initialized) | |
15409 | return; | |
15410 | initialized = 1; | |
15411 | ||
15412 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15413 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15414 | internal and momentary breakpoints, etc.). */ | |
15415 | ops = &bkpt_base_breakpoint_ops; | |
15416 | *ops = base_breakpoint_ops; | |
15417 | ops->re_set = bkpt_re_set; | |
15418 | ops->insert_location = bkpt_insert_location; | |
15419 | ops->remove_location = bkpt_remove_location; | |
15420 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15421 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15422 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15423 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15424 | |
15425 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15426 | ops = &bkpt_breakpoint_ops; | |
15427 | *ops = bkpt_base_breakpoint_ops; | |
15428 | ops->re_set = bkpt_re_set; | |
15429 | ops->resources_needed = bkpt_resources_needed; | |
15430 | ops->print_it = bkpt_print_it; | |
15431 | ops->print_mention = bkpt_print_mention; | |
15432 | ops->print_recreate = bkpt_print_recreate; | |
15433 | ||
15434 | /* Ranged breakpoints. */ | |
15435 | ops = &ranged_breakpoint_ops; | |
15436 | *ops = bkpt_breakpoint_ops; | |
15437 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15438 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15439 | ops->print_it = print_it_ranged_breakpoint; | |
15440 | ops->print_one = print_one_ranged_breakpoint; | |
15441 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15442 | ops->print_mention = print_mention_ranged_breakpoint; | |
15443 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15444 | ||
15445 | /* Internal breakpoints. */ | |
15446 | ops = &internal_breakpoint_ops; | |
15447 | *ops = bkpt_base_breakpoint_ops; | |
15448 | ops->re_set = internal_bkpt_re_set; | |
15449 | ops->check_status = internal_bkpt_check_status; | |
15450 | ops->print_it = internal_bkpt_print_it; | |
15451 | ops->print_mention = internal_bkpt_print_mention; | |
15452 | ||
15453 | /* Momentary breakpoints. */ | |
15454 | ops = &momentary_breakpoint_ops; | |
15455 | *ops = bkpt_base_breakpoint_ops; | |
15456 | ops->re_set = momentary_bkpt_re_set; | |
15457 | ops->check_status = momentary_bkpt_check_status; | |
15458 | ops->print_it = momentary_bkpt_print_it; | |
15459 | ops->print_mention = momentary_bkpt_print_mention; | |
15460 | ||
55aa24fb SDJ |
15461 | /* Probe breakpoints. */ |
15462 | ops = &bkpt_probe_breakpoint_ops; | |
15463 | *ops = bkpt_breakpoint_ops; | |
15464 | ops->insert_location = bkpt_probe_insert_location; | |
15465 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15466 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15467 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15468 | |
2060206e PA |
15469 | /* Watchpoints. */ |
15470 | ops = &watchpoint_breakpoint_ops; | |
15471 | *ops = base_breakpoint_ops; | |
15472 | ops->re_set = re_set_watchpoint; | |
15473 | ops->insert_location = insert_watchpoint; | |
15474 | ops->remove_location = remove_watchpoint; | |
15475 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15476 | ops->check_status = check_status_watchpoint; | |
15477 | ops->resources_needed = resources_needed_watchpoint; | |
15478 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15479 | ops->print_it = print_it_watchpoint; | |
15480 | ops->print_mention = print_mention_watchpoint; | |
15481 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15482 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15483 | |
15484 | /* Masked watchpoints. */ | |
15485 | ops = &masked_watchpoint_breakpoint_ops; | |
15486 | *ops = watchpoint_breakpoint_ops; | |
15487 | ops->insert_location = insert_masked_watchpoint; | |
15488 | ops->remove_location = remove_masked_watchpoint; | |
15489 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15490 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15491 | ops->print_it = print_it_masked_watchpoint; | |
15492 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15493 | ops->print_mention = print_mention_masked_watchpoint; | |
15494 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15495 | ||
15496 | /* Tracepoints. */ | |
15497 | ops = &tracepoint_breakpoint_ops; | |
15498 | *ops = base_breakpoint_ops; | |
15499 | ops->re_set = tracepoint_re_set; | |
15500 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15501 | ops->print_one_detail = tracepoint_print_one_detail; | |
15502 | ops->print_mention = tracepoint_print_mention; | |
15503 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15504 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15505 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15506 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15507 | |
55aa24fb SDJ |
15508 | /* Probe tracepoints. */ |
15509 | ops = &tracepoint_probe_breakpoint_ops; | |
15510 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15511 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15512 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15513 | |
983af33b SDJ |
15514 | /* Static tracepoints with marker (`-m'). */ |
15515 | ops = &strace_marker_breakpoint_ops; | |
15516 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15517 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15518 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15519 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15520 | |
15521 | /* Fork catchpoints. */ | |
15522 | ops = &catch_fork_breakpoint_ops; | |
15523 | *ops = base_breakpoint_ops; | |
15524 | ops->insert_location = insert_catch_fork; | |
15525 | ops->remove_location = remove_catch_fork; | |
15526 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15527 | ops->print_it = print_it_catch_fork; | |
15528 | ops->print_one = print_one_catch_fork; | |
15529 | ops->print_mention = print_mention_catch_fork; | |
15530 | ops->print_recreate = print_recreate_catch_fork; | |
15531 | ||
15532 | /* Vfork catchpoints. */ | |
15533 | ops = &catch_vfork_breakpoint_ops; | |
15534 | *ops = base_breakpoint_ops; | |
15535 | ops->insert_location = insert_catch_vfork; | |
15536 | ops->remove_location = remove_catch_vfork; | |
15537 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15538 | ops->print_it = print_it_catch_vfork; | |
15539 | ops->print_one = print_one_catch_vfork; | |
15540 | ops->print_mention = print_mention_catch_vfork; | |
15541 | ops->print_recreate = print_recreate_catch_vfork; | |
15542 | ||
15543 | /* Exec catchpoints. */ | |
15544 | ops = &catch_exec_breakpoint_ops; | |
15545 | *ops = base_breakpoint_ops; | |
2060206e PA |
15546 | ops->insert_location = insert_catch_exec; |
15547 | ops->remove_location = remove_catch_exec; | |
15548 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15549 | ops->print_it = print_it_catch_exec; | |
15550 | ops->print_one = print_one_catch_exec; | |
15551 | ops->print_mention = print_mention_catch_exec; | |
15552 | ops->print_recreate = print_recreate_catch_exec; | |
15553 | ||
edcc5120 TT |
15554 | /* Solib-related catchpoints. */ |
15555 | ops = &catch_solib_breakpoint_ops; | |
15556 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15557 | ops->insert_location = insert_catch_solib; |
15558 | ops->remove_location = remove_catch_solib; | |
15559 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15560 | ops->check_status = check_status_catch_solib; | |
15561 | ops->print_it = print_it_catch_solib; | |
15562 | ops->print_one = print_one_catch_solib; | |
15563 | ops->print_mention = print_mention_catch_solib; | |
15564 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15565 | |
15566 | ops = &dprintf_breakpoint_ops; | |
15567 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15568 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15569 | ops->resources_needed = bkpt_resources_needed; |
15570 | ops->print_it = bkpt_print_it; | |
15571 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15572 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15573 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15574 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15575 | } |
15576 | ||
8bfd80db YQ |
15577 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15578 | ||
15579 | static struct cmd_list_element *enablebreaklist = NULL; | |
15580 | ||
8588b356 SM |
15581 | /* See breakpoint.h. */ |
15582 | ||
15583 | cmd_list_element *commands_cmd_element = nullptr; | |
15584 | ||
6c265988 | 15585 | void _initialize_breakpoint (); |
c906108c | 15586 | void |
6c265988 | 15587 | _initialize_breakpoint () |
c906108c SS |
15588 | { |
15589 | struct cmd_list_element *c; | |
15590 | ||
2060206e PA |
15591 | initialize_breakpoint_ops (); |
15592 | ||
76727919 TT |
15593 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15594 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15595 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15596 | |
c906108c SS |
15597 | breakpoint_chain = 0; |
15598 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15599 | before a breakpoint is set. */ | |
15600 | breakpoint_count = 0; | |
15601 | ||
1042e4c0 SS |
15602 | tracepoint_count = 0; |
15603 | ||
1bedd215 AC |
15604 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15605 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15606 | Usage is `ignore N COUNT'.")); | |
c906108c | 15607 | |
8588b356 SM |
15608 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15609 | commands_command, _("\ | |
18da0c51 MG |
15610 | Set commands to be executed when the given breakpoints are hit.\n\ |
15611 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15612 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15613 | (e.g. `5-7').\n\ | |
c906108c SS |
15614 | With no argument, the targeted breakpoint is the last one set.\n\ |
15615 | The commands themselves follow starting on the next line.\n\ | |
15616 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15617 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15618 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15619 | |
d55637df | 15620 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15621 | Specify breakpoint number N to break only if COND is true.\n\ |
733d554a TBA |
15622 | Usage is `condition [-force] N COND', where N is an integer and COND\n\ |
15623 | is an expression to be evaluated whenever breakpoint N is reached.\n\ | |
15624 | With the \"-force\" flag, the condition is defined even when it is\n\ | |
15625 | invalid for all current locations.")); | |
d55637df | 15626 | set_cmd_completer (c, condition_completer); |
c906108c | 15627 | |
1bedd215 | 15628 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15629 | Set a temporary breakpoint.\n\ |
c906108c SS |
15630 | Like \"break\" except the breakpoint is only temporary,\n\ |
15631 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15632 | by using \"enable delete\" on the breakpoint number.\n\ |
15633 | \n" | |
15634 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15635 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15636 | |
1bedd215 | 15637 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15638 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15639 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15640 | some target hardware may not have this support.\n\ |
15641 | \n" | |
15642 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15643 | set_cmd_completer (c, location_completer); |
c906108c | 15644 | |
1bedd215 | 15645 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15646 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15647 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15648 | so it will be deleted when hit.\n\ |
15649 | \n" | |
15650 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15651 | set_cmd_completer (c, location_completer); |
c906108c | 15652 | |
1bedd215 | 15653 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
590042fc PW |
15654 | Enable all or some breakpoints.\n\ |
15655 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15656 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15657 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15658 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15659 | With a subcommand you can enable temporarily."), |
c906108c | 15660 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15661 | |
15662 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15663 | ||
84951ab5 | 15664 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
15665 | Enable all or some breakpoints.\n\ |
15666 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15667 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15668 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15669 | May be abbreviated to simply \"enable\"."), |
c5aa993b | 15670 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15671 | |
1a966eab | 15672 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15673 | Enable some breakpoints for one hit.\n\ |
15674 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 15675 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
15676 | &enablebreaklist); |
15677 | ||
1a966eab | 15678 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15679 | Enable some breakpoints and delete when hit.\n\ |
15680 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 15681 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15682 | &enablebreaklist); |
15683 | ||
816338b5 | 15684 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
15685 | Enable some breakpoints for COUNT hits.\n\ |
15686 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15687 | If a breakpoint is hit while enabled in this fashion,\n\ |
15688 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15689 | &enablebreaklist); | |
15690 | ||
1a966eab | 15691 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15692 | Enable some breakpoints and delete when hit.\n\ |
15693 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 15694 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15695 | &enablelist); |
15696 | ||
1a966eab | 15697 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15698 | Enable some breakpoints for one hit.\n\ |
15699 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 15700 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
15701 | &enablelist); |
15702 | ||
15703 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
15704 | Enable some breakpoints for COUNT hits.\n\ |
15705 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15706 | If a breakpoint is hit while enabled in this fashion,\n\ |
15707 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15708 | &enablelist); |
15709 | ||
1bedd215 | 15710 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
590042fc PW |
15711 | Disable all or some breakpoints.\n\ |
15712 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15713 | Arguments are breakpoint numbers with spaces in between.\n\ |
15714 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15715 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15716 | &disablelist, "disable ", 1, &cmdlist); |
15717 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15718 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15719 | |
57b4f16e | 15720 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
15721 | Disable all or some breakpoints.\n\ |
15722 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15723 | Arguments are breakpoint numbers with spaces in between.\n\ |
15724 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15725 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15726 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15727 | &disablelist); |
15728 | ||
1bedd215 | 15729 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
590042fc PW |
15730 | Delete all or some breakpoints.\n\ |
15731 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15732 | Arguments are breakpoint numbers with spaces in between.\n\ |
15733 | To delete all breakpoints, give no argument.\n\ | |
15734 | \n\ | |
590042fc | 15735 | Also a prefix command for deletion of other GDB objects."), |
c906108c SS |
15736 | &deletelist, "delete ", 1, &cmdlist); |
15737 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15738 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15739 | |
57b4f16e | 15740 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
15741 | Delete all or some breakpoints or auto-display expressions.\n\ |
15742 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15743 | Arguments are breakpoint numbers with spaces in between.\n\ |
15744 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15745 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15746 | &deletelist); |
15747 | ||
1bedd215 | 15748 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15749 | Clear breakpoint at specified location.\n\ |
15750 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15751 | \n\ |
15752 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15753 | is executing in.\n" |
89549d7f | 15754 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15755 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15756 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15757 | |
1bedd215 | 15758 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15759 | Set breakpoint at specified location.\n" |
31e2b00f | 15760 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15761 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15762 | |
c906108c SS |
15763 | add_com_alias ("b", "break", class_run, 1); |
15764 | add_com_alias ("br", "break", class_run, 1); | |
15765 | add_com_alias ("bre", "break", class_run, 1); | |
15766 | add_com_alias ("brea", "break", class_run, 1); | |
15767 | ||
c906108c SS |
15768 | if (dbx_commands) |
15769 | { | |
1bedd215 AC |
15770 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15771 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15772 | &stoplist, "stop ", 1, &cmdlist); |
15773 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15774 | _("Break in function or address."), &stoplist); |
c5aa993b | 15775 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15776 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15777 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15778 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15779 | The \"Type\" column indicates one of:\n\ |
15780 | \tbreakpoint - normal breakpoint\n\ | |
15781 | \twatchpoint - watchpoint\n\ | |
15782 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15783 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15784 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15785 | address and file/line number respectively.\n\ |
15786 | \n\ | |
15787 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15788 | are set to the address of the last breakpoint listed unless the command\n\ |
15789 | is prefixed with \"server \".\n\n\ | |
c906108c | 15790 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15791 | breakpoint set.")); |
c906108c SS |
15792 | } |
15793 | ||
11db9430 | 15794 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15795 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15796 | The \"Type\" column indicates one of:\n\ |
15797 | \tbreakpoint - normal breakpoint\n\ | |
15798 | \twatchpoint - watchpoint\n\ | |
15799 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15800 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15801 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15802 | address and file/line number respectively.\n\ |
15803 | \n\ | |
15804 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15805 | are set to the address of the last breakpoint listed unless the command\n\ |
15806 | is prefixed with \"server \".\n\n\ | |
c906108c | 15807 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15808 | breakpoint set.")); |
c906108c | 15809 | |
6b04bdb7 MS |
15810 | add_info_alias ("b", "breakpoints", 1); |
15811 | ||
1a966eab AC |
15812 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15813 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15814 | The \"Type\" column indicates one of:\n\ |
15815 | \tbreakpoint - normal breakpoint\n\ | |
15816 | \twatchpoint - watchpoint\n\ | |
15817 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15818 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15819 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15820 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15821 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15822 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15823 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15824 | address and file/line number respectively.\n\ |
15825 | \n\ | |
15826 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15827 | are set to the address of the last breakpoint listed unless the command\n\ |
15828 | is prefixed with \"server \".\n\n\ | |
c906108c | 15829 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15830 | breakpoint set."), |
c906108c SS |
15831 | &maintenanceinfolist); |
15832 | ||
3b6acaee | 15833 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 15834 | Set catchpoints to catch events."), |
3b6acaee TT |
15835 | &catch_cmdlist, "catch ", |
15836 | 0/*allow-unknown*/, &cmdlist); | |
44feb3ce | 15837 | |
3b6acaee | 15838 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 15839 | Set temporary catchpoints to catch events."), |
3b6acaee TT |
15840 | &tcatch_cmdlist, "tcatch ", |
15841 | 0/*allow-unknown*/, &cmdlist); | |
44feb3ce | 15842 | |
44feb3ce TT |
15843 | add_catch_command ("fork", _("Catch calls to fork."), |
15844 | catch_fork_command_1, | |
a96d9b2e | 15845 | NULL, |
44feb3ce TT |
15846 | (void *) (uintptr_t) catch_fork_permanent, |
15847 | (void *) (uintptr_t) catch_fork_temporary); | |
15848 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15849 | catch_fork_command_1, | |
a96d9b2e | 15850 | NULL, |
44feb3ce TT |
15851 | (void *) (uintptr_t) catch_vfork_permanent, |
15852 | (void *) (uintptr_t) catch_vfork_temporary); | |
15853 | add_catch_command ("exec", _("Catch calls to exec."), | |
15854 | catch_exec_command_1, | |
a96d9b2e SDJ |
15855 | NULL, |
15856 | CATCH_PERMANENT, | |
15857 | CATCH_TEMPORARY); | |
edcc5120 TT |
15858 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15859 | Usage: catch load [REGEX]\n\ | |
15860 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15861 | catch_load_command_1, | |
15862 | NULL, | |
15863 | CATCH_PERMANENT, | |
15864 | CATCH_TEMPORARY); | |
15865 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15866 | Usage: catch unload [REGEX]\n\ | |
15867 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15868 | catch_unload_command_1, | |
15869 | NULL, | |
15870 | CATCH_PERMANENT, | |
15871 | CATCH_TEMPORARY); | |
c5aa993b | 15872 | |
1bedd215 AC |
15873 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15874 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15875 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15876 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15877 | an expression changes.\n\ |
15878 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15879 | the memory to which it refers.")); | |
65d12d83 | 15880 | set_cmd_completer (c, expression_completer); |
c906108c | 15881 | |
1bedd215 AC |
15882 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15883 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15884 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15885 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15886 | an expression is read.\n\ |
15887 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15888 | the memory to which it refers.")); | |
65d12d83 | 15889 | set_cmd_completer (c, expression_completer); |
c906108c | 15890 | |
1bedd215 AC |
15891 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15892 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15893 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15894 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15895 | an expression is either read or written.\n\ |
15896 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15897 | the memory to which it refers.")); | |
65d12d83 | 15898 | set_cmd_completer (c, expression_completer); |
c906108c | 15899 | |
11db9430 | 15900 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15901 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15902 | |
920d2a44 AC |
15903 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15904 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15905 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15906 | &can_use_hw_watchpoints, _("\ | |
15907 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15908 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15909 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15910 | such is available. (However, any hardware watchpoints that were\n\ | |
15911 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15912 | hardware.)"), |
15913 | NULL, | |
920d2a44 | 15914 | show_can_use_hw_watchpoints, |
85c07804 | 15915 | &setlist, &showlist); |
c906108c SS |
15916 | |
15917 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15918 | |
1042e4c0 SS |
15919 | /* Tracepoint manipulation commands. */ |
15920 | ||
15921 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15922 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15923 | \n" |
15924 | BREAK_ARGS_HELP ("trace") "\n\ | |
15925 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15926 | set_cmd_completer (c, location_completer); | |
15927 | ||
57b4f16e PW |
15928 | add_com_alias ("tp", "trace", class_breakpoint, 0); |
15929 | add_com_alias ("tr", "trace", class_breakpoint, 1); | |
15930 | add_com_alias ("tra", "trace", class_breakpoint, 1); | |
15931 | add_com_alias ("trac", "trace", class_breakpoint, 1); | |
1042e4c0 | 15932 | |
7a697b8d | 15933 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15934 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15935 | \n" |
15936 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15937 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15938 | set_cmd_completer (c, location_completer); | |
15939 | ||
0fb4aa4b | 15940 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15941 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15942 | \n\ |
15943 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15944 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15945 | or -m MARKER_ID.\n\n\ | |
15946 | If a marker id is specified, probe the marker with that name. With\n\ | |
15947 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15948 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15949 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15950 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15951 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15952 | \n\ | |
15953 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15954 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15955 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15956 | conditions are different.\n\ | |
0fb4aa4b PA |
15957 | \n\ |
15958 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15959 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15960 | set_cmd_completer (c, location_completer); | |
15961 | ||
11db9430 | 15962 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15963 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15964 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15965 | last tracepoint set.")); | |
15966 | ||
15967 | add_info_alias ("tp", "tracepoints", 1); | |
15968 | ||
15969 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15970 | Delete specified tracepoints.\n\ | |
15971 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15972 | No argument means delete all tracepoints."), | |
15973 | &deletelist); | |
7e20dfcd | 15974 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15975 | |
15976 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15977 | Disable specified tracepoints.\n\ | |
15978 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15979 | No argument means disable all tracepoints."), | |
15980 | &disablelist); | |
15981 | deprecate_cmd (c, "disable"); | |
15982 | ||
15983 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15984 | Enable specified tracepoints.\n\ | |
15985 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15986 | No argument means enable all tracepoints."), | |
15987 | &enablelist); | |
15988 | deprecate_cmd (c, "enable"); | |
15989 | ||
15990 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15991 | Set the passcount for a tracepoint.\n\ | |
15992 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15993 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15994 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15995 | ||
0743fc83 TT |
15996 | add_basic_prefix_cmd ("save", class_breakpoint, |
15997 | _("Save breakpoint definitions as a script."), | |
15998 | &save_cmdlist, "save ", | |
15999 | 0/*allow-unknown*/, &cmdlist); | |
6149aea9 PA |
16000 | |
16001 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16002 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16003 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16004 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16005 | session to restore them."), | |
16006 | &save_cmdlist); | |
16007 | set_cmd_completer (c, filename_completer); | |
16008 | ||
16009 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16010 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16011 | Use the 'source' command in another debug session to restore them."), |
16012 | &save_cmdlist); | |
1042e4c0 SS |
16013 | set_cmd_completer (c, filename_completer); |
16014 | ||
6149aea9 PA |
16015 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16016 | deprecate_cmd (c, "save tracepoints"); | |
16017 | ||
3b6acaee | 16018 | add_basic_prefix_cmd ("breakpoint", class_maintenance, _("\ |
590042fc | 16019 | Breakpoint specific settings.\n\ |
fa8d40ab | 16020 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 16021 | pending breakpoint behavior."), |
3b6acaee TT |
16022 | &breakpoint_set_cmdlist, "set breakpoint ", |
16023 | 0/*allow-unknown*/, &setlist); | |
16024 | add_show_prefix_cmd ("breakpoint", class_maintenance, _("\ | |
590042fc | 16025 | Breakpoint specific settings.\n\ |
fa8d40ab | 16026 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 16027 | pending breakpoint behavior."), |
3b6acaee TT |
16028 | &breakpoint_show_cmdlist, "show breakpoint ", |
16029 | 0/*allow-unknown*/, &showlist); | |
fa8d40ab | 16030 | |
7915a72c AC |
16031 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16032 | &pending_break_support, _("\ | |
16033 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16034 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16035 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16036 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16037 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16038 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16039 | NULL, |
920d2a44 | 16040 | show_pending_break_support, |
6e1d7d6c AC |
16041 | &breakpoint_set_cmdlist, |
16042 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16043 | |
16044 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16045 | |
16046 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16047 | &automatic_hardware_breakpoints, _("\ | |
16048 | Set automatic usage of hardware breakpoints."), _("\ | |
16049 | Show automatic usage of hardware breakpoints."), _("\ | |
16050 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16051 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16052 | a warning will be emitted for such breakpoints."), | |
16053 | NULL, | |
16054 | show_automatic_hardware_breakpoints, | |
16055 | &breakpoint_set_cmdlist, | |
16056 | &breakpoint_show_cmdlist); | |
74960c60 | 16057 | |
a25a5a45 PA |
16058 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16059 | &always_inserted_mode, _("\ | |
74960c60 VP |
16060 | Set mode for inserting breakpoints."), _("\ |
16061 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16062 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16063 | they're created, kept inserted even when execution stops, and removed\n\ | |
16064 | only when the user deletes them. When this mode is off (the default),\n\ | |
16065 | breakpoints are inserted only when execution continues, and removed\n\ | |
16066 | when execution stops."), | |
72d0e2c5 YQ |
16067 | NULL, |
16068 | &show_always_inserted_mode, | |
16069 | &breakpoint_set_cmdlist, | |
16070 | &breakpoint_show_cmdlist); | |
f1310107 | 16071 | |
b775012e LM |
16072 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16073 | condition_evaluation_enums, | |
16074 | &condition_evaluation_mode_1, _("\ | |
16075 | Set mode of breakpoint condition evaluation."), _("\ | |
16076 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16077 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16078 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16079 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16080 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16081 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16082 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 16083 | be set to \"host\"."), |
b775012e LM |
16084 | &set_condition_evaluation_mode, |
16085 | &show_condition_evaluation_mode, | |
16086 | &breakpoint_set_cmdlist, | |
16087 | &breakpoint_show_cmdlist); | |
16088 | ||
f1310107 TJB |
16089 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16090 | Set a breakpoint for an address range.\n\ | |
16091 | break-range START-LOCATION, END-LOCATION\n\ | |
16092 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16093 | LINENUM, for that line in the current file,\n\ | |
16094 | FILE:LINENUM, for that line in that file,\n\ | |
16095 | +OFFSET, for that number of lines after the current line\n\ | |
16096 | or the start of the range\n\ | |
16097 | FUNCTION, for the first line in that function,\n\ | |
16098 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16099 | *ADDRESS, for the instruction at that address.\n\ | |
16100 | \n\ | |
16101 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16102 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16103 | range (including START-LOCATION and END-LOCATION).")); | |
16104 | ||
e7e0cddf | 16105 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16106 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16107 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16108 | location may be a linespec, explicit, or address location.\n" |
16109 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16110 | set_cmd_completer (c, location_completer); |
16111 | ||
16112 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16113 | dprintf_style_enums, &dprintf_style, _("\ | |
16114 | Set the style of usage for dynamic printf."), _("\ | |
16115 | Show the style of usage for dynamic printf."), _("\ | |
16116 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16117 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16118 | console, as with the \"printf\" command.\n\ | |
16119 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16120 | program; by default printf(), but you can choose a different function or\n\ | |
16121 | output stream by setting dprintf-function and dprintf-channel."), | |
16122 | update_dprintf_commands, NULL, | |
16123 | &setlist, &showlist); | |
16124 | ||
16125 | dprintf_function = xstrdup ("printf"); | |
16126 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16127 | &dprintf_function, _("\ | |
590042fc PW |
16128 | Set the function to use for dynamic printf."), _("\ |
16129 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
16130 | update_dprintf_commands, NULL, |
16131 | &setlist, &showlist); | |
16132 | ||
16133 | dprintf_channel = xstrdup (""); | |
16134 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16135 | &dprintf_channel, _("\ | |
590042fc PW |
16136 | Set the channel to use for dynamic printf."), _("\ |
16137 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
16138 | update_dprintf_commands, NULL, |
16139 | &setlist, &showlist); | |
16140 | ||
d3ce09f5 SS |
16141 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16142 | &disconnected_dprintf, _("\ | |
16143 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16144 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16145 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16146 | even if GDB disconnects or detaches from the target."), | |
16147 | NULL, | |
16148 | NULL, | |
16149 | &setlist, &showlist); | |
16150 | ||
16151 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
16152 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
16153 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
16154 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
16155 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 16156 | |
491144b5 | 16157 | automatic_hardware_breakpoints = true; |
f3b1572e | 16158 | |
76727919 TT |
16159 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
16160 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 16161 | } |