Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
3666a048 | 3 | Copyright (C) 1986-2021 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
d55e5aa6 | 21 | #include "arch-utils.h" |
4de283e4 TT |
22 | #include <ctype.h> |
23 | #include "hashtab.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
c906108c | 26 | #include "breakpoint.h" |
4de283e4 TT |
27 | #include "tracepoint.h" |
28 | #include "gdbtypes.h" | |
c906108c | 29 | #include "expression.h" |
d55e5aa6 | 30 | #include "gdbcore.h" |
4de283e4 TT |
31 | #include "gdbcmd.h" |
32 | #include "value.h" | |
33 | #include "command.h" | |
c906108c | 34 | #include "inferior.h" |
45741a9c | 35 | #include "infrun.h" |
4de283e4 TT |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
c906108c | 38 | #include "language.h" |
4de283e4 TT |
39 | #include "gdb-demangle.h" |
40 | #include "filenames.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
d55e5aa6 | 43 | #include "objfiles.h" |
4de283e4 TT |
44 | #include "source.h" |
45 | #include "linespec.h" | |
46 | #include "completer.h" | |
47 | #include "ui-out.h" | |
48 | #include "cli/cli-script.h" | |
49 | #include "block.h" | |
50 | #include "solib.h" | |
51 | #include "solist.h" | |
d55e5aa6 | 52 | #include "observable.h" |
4de283e4 TT |
53 | #include "memattr.h" |
54 | #include "ada-lang.h" | |
55 | #include "top.h" | |
56 | #include "valprint.h" | |
57 | #include "jit.h" | |
65d79d4b | 58 | #include "parser-defs.h" |
4de283e4 | 59 | #include "gdb_regex.h" |
55aa24fb | 60 | #include "probe.h" |
4de283e4 | 61 | #include "cli/cli-utils.h" |
d55e5aa6 | 62 | #include "stack.h" |
4de283e4 TT |
63 | #include "ax-gdb.h" |
64 | #include "dummy-frame.h" | |
65 | #include "interps.h" | |
268a13a5 | 66 | #include "gdbsupport/format.h" |
cfc31633 | 67 | #include "thread-fsm.h" |
5d5658a1 | 68 | #include "tid-parse.h" |
4de283e4 | 69 | #include "cli/cli-style.h" |
0f8e2034 | 70 | #include "cli/cli-decode.h" |
d3ce09f5 | 71 | |
1042e4c0 | 72 | /* readline include files */ |
073bbbb0 | 73 | #include "readline/tilde.h" |
1042e4c0 SS |
74 | |
75 | /* readline defines this. */ | |
76 | #undef savestring | |
77 | ||
034dad6f | 78 | #include "mi/mi-common.h" |
6dddc817 | 79 | #include "extension.h" |
325fac50 | 80 | #include <algorithm> |
5ed8105e | 81 | #include "progspace-and-thread.h" |
268a13a5 TT |
82 | #include "gdbsupport/array-view.h" |
83 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 84 | |
4a64f543 | 85 | /* Prototypes for local functions. */ |
c906108c | 86 | |
896b6bda | 87 | static void map_breakpoint_numbers (const char *, |
48649e1b | 88 | gdb::function_view<void (breakpoint *)>); |
c906108c | 89 | |
348d480f PA |
90 | static void breakpoint_re_set_default (struct breakpoint *); |
91 | ||
f00aae0f | 92 | static void |
626d2320 | 93 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
94 | struct linespec_result *canonical, |
95 | enum bptype type_wanted); | |
983af33b SDJ |
96 | |
97 | static void create_breakpoints_sal_default (struct gdbarch *, | |
98 | struct linespec_result *, | |
e1e01040 PA |
99 | gdb::unique_xmalloc_ptr<char>, |
100 | gdb::unique_xmalloc_ptr<char>, | |
101 | enum bptype, | |
983af33b SDJ |
102 | enum bpdisp, int, int, |
103 | int, | |
104 | const struct breakpoint_ops *, | |
44f238bb | 105 | int, int, int, unsigned); |
983af33b | 106 | |
6c5b2ebe | 107 | static std::vector<symtab_and_line> decode_location_default |
626d2320 | 108 | (struct breakpoint *b, struct event_location *location, |
6c5b2ebe | 109 | struct program_space *search_pspace); |
983af33b | 110 | |
a6535de1 TT |
111 | static int can_use_hardware_watchpoint |
112 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 113 | |
a14ed312 | 114 | static void mention (struct breakpoint *); |
c906108c | 115 | |
348d480f PA |
116 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
117 | enum bptype, | |
c0a91b2b | 118 | const struct breakpoint_ops *); |
3742cc8b YQ |
119 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
120 | const struct symtab_and_line *); | |
121 | ||
4a64f543 MS |
122 | /* This function is used in gdbtk sources and thus can not be made |
123 | static. */ | |
63c252f8 | 124 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 125 | struct symtab_and_line, |
c0a91b2b TT |
126 | enum bptype, |
127 | const struct breakpoint_ops *); | |
c906108c | 128 | |
06edf0c0 PA |
129 | static struct breakpoint * |
130 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
131 | enum bptype type, | |
a1aa2221 LM |
132 | const struct breakpoint_ops *ops, |
133 | int loc_enabled); | |
06edf0c0 | 134 | |
76897487 KB |
135 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
136 | ||
a6d9a66e UW |
137 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
138 | CORE_ADDR bpaddr, | |
dda83cd7 | 139 | enum bptype bptype); |
76897487 | 140 | |
6c95b8df PA |
141 | static void describe_other_breakpoints (struct gdbarch *, |
142 | struct program_space *, CORE_ADDR, | |
5af949e3 | 143 | struct obj_section *, int); |
c906108c | 144 | |
85d721b8 PA |
145 | static int watchpoint_locations_match (struct bp_location *loc1, |
146 | struct bp_location *loc2); | |
147 | ||
7f32a4d5 PA |
148 | static int breakpoint_locations_match (struct bp_location *loc1, |
149 | struct bp_location *loc2, | |
150 | bool sw_hw_bps_match = false); | |
151 | ||
f1310107 | 152 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 153 | const struct address_space *aspace, |
f1310107 TJB |
154 | CORE_ADDR addr); |
155 | ||
d35ae833 | 156 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 157 | const address_space *, |
d35ae833 PA |
158 | CORE_ADDR, int); |
159 | ||
834c0d03 | 160 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 161 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 162 | |
e514a9d6 | 163 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 164 | |
a14ed312 | 165 | static int hw_breakpoint_used_count (void); |
c906108c | 166 | |
a1398e0c PA |
167 | static int hw_watchpoint_use_count (struct breakpoint *); |
168 | ||
169 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
170 | enum bptype type, | |
171 | int *other_type_used); | |
c906108c | 172 | |
816338b5 SS |
173 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
174 | int count); | |
c906108c | 175 | |
f431efe5 | 176 | static void decref_bp_location (struct bp_location **loc); |
fe3f5fa8 | 177 | |
39d61571 | 178 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 179 | |
44702360 PA |
180 | /* update_global_location_list's modes of operation wrt to whether to |
181 | insert locations now. */ | |
182 | enum ugll_insert_mode | |
183 | { | |
184 | /* Don't insert any breakpoint locations into the inferior, only | |
185 | remove already-inserted locations that no longer should be | |
186 | inserted. Functions that delete a breakpoint or breakpoints | |
187 | should specify this mode, so that deleting a breakpoint doesn't | |
188 | have the side effect of inserting the locations of other | |
189 | breakpoints that are marked not-inserted, but should_be_inserted | |
190 | returns true on them. | |
191 | ||
192 | This behavior is useful is situations close to tear-down -- e.g., | |
193 | after an exec, while the target still has execution, but | |
194 | breakpoint shadows of the previous executable image should *NOT* | |
195 | be restored to the new image; or before detaching, where the | |
196 | target still has execution and wants to delete breakpoints from | |
197 | GDB's lists, and all breakpoints had already been removed from | |
198 | the inferior. */ | |
199 | UGLL_DONT_INSERT, | |
200 | ||
a25a5a45 PA |
201 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
202 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
203 | UGLL_MAY_INSERT, |
204 | ||
a25a5a45 PA |
205 | /* Insert locations now, irrespective of |
206 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
207 | stopped right now, and the user did "continue". We need to | |
208 | insert breakpoints _before_ resuming the target, but | |
209 | UGLL_MAY_INSERT wouldn't insert them, because | |
210 | breakpoints_should_be_inserted_now returns false at that point, | |
211 | as no thread is running yet. */ | |
04086b45 | 212 | UGLL_INSERT |
44702360 PA |
213 | }; |
214 | ||
215 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 216 | |
44702360 | 217 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 218 | |
74960c60 | 219 | static void insert_breakpoint_locations (void); |
a5606eee | 220 | |
0b39b52e | 221 | static void trace_pass_command (const char *, int); |
1042e4c0 | 222 | |
558a9d82 YQ |
223 | static void set_tracepoint_count (int num); |
224 | ||
f2478a7e | 225 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 226 | |
983af33b SDJ |
227 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
228 | otherwise. */ | |
229 | ||
230 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 231 | |
2060206e PA |
232 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
233 | that are implemented on top of software or hardware breakpoints | |
234 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
235 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
236 | ||
237 | /* Internal breakpoints class type. */ | |
06edf0c0 | 238 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
239 | |
240 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
241 | static struct breakpoint_ops momentary_breakpoint_ops; |
242 | ||
2060206e PA |
243 | /* The breakpoint_ops structure to be used in regular user created |
244 | breakpoints. */ | |
245 | struct breakpoint_ops bkpt_breakpoint_ops; | |
246 | ||
55aa24fb SDJ |
247 | /* Breakpoints set on probes. */ |
248 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
249 | ||
bac7c5cf GB |
250 | /* Tracepoints set on probes. */ |
251 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
252 | ||
e7e0cddf | 253 | /* Dynamic printf class type. */ |
c5867ab6 | 254 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 255 | |
d3ce09f5 SS |
256 | /* The style in which to perform a dynamic printf. This is a user |
257 | option because different output options have different tradeoffs; | |
258 | if GDB does the printing, there is better error handling if there | |
259 | is a problem with any of the arguments, but using an inferior | |
260 | function lets you have special-purpose printers and sending of | |
261 | output to the same place as compiled-in print functions. */ | |
262 | ||
263 | static const char dprintf_style_gdb[] = "gdb"; | |
264 | static const char dprintf_style_call[] = "call"; | |
265 | static const char dprintf_style_agent[] = "agent"; | |
266 | static const char *const dprintf_style_enums[] = { | |
267 | dprintf_style_gdb, | |
268 | dprintf_style_call, | |
269 | dprintf_style_agent, | |
270 | NULL | |
271 | }; | |
272 | static const char *dprintf_style = dprintf_style_gdb; | |
273 | ||
274 | /* The function to use for dynamic printf if the preferred style is to | |
275 | call into the inferior. The value is simply a string that is | |
276 | copied into the command, so it can be anything that GDB can | |
277 | evaluate to a callable address, not necessarily a function name. */ | |
278 | ||
bde6261a | 279 | static char *dprintf_function; |
d3ce09f5 SS |
280 | |
281 | /* The channel to use for dynamic printf if the preferred style is to | |
282 | call into the inferior; if a nonempty string, it will be passed to | |
283 | the call as the first argument, with the format string as the | |
284 | second. As with the dprintf function, this can be anything that | |
285 | GDB knows how to evaluate, so in addition to common choices like | |
286 | "stderr", this could be an app-specific expression like | |
287 | "mystreams[curlogger]". */ | |
288 | ||
bde6261a | 289 | static char *dprintf_channel; |
d3ce09f5 SS |
290 | |
291 | /* True if dprintf commands should continue to operate even if GDB | |
292 | has disconnected. */ | |
491144b5 | 293 | static bool disconnected_dprintf = true; |
d3ce09f5 | 294 | |
5cea2a26 PA |
295 | struct command_line * |
296 | breakpoint_commands (struct breakpoint *b) | |
297 | { | |
d1b0a7bf | 298 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 299 | } |
3daf8fe5 | 300 | |
f3b1572e PA |
301 | /* Flag indicating that a command has proceeded the inferior past the |
302 | current breakpoint. */ | |
303 | ||
491144b5 | 304 | static bool breakpoint_proceeded; |
f3b1572e | 305 | |
956a9fb9 | 306 | const char * |
2cec12e5 AR |
307 | bpdisp_text (enum bpdisp disp) |
308 | { | |
4a64f543 MS |
309 | /* NOTE: the following values are a part of MI protocol and |
310 | represent values of 'disp' field returned when inferior stops at | |
311 | a breakpoint. */ | |
bc043ef3 | 312 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 313 | |
2cec12e5 AR |
314 | return bpdisps[(int) disp]; |
315 | } | |
c906108c | 316 | |
4a64f543 | 317 | /* Prototypes for exported functions. */ |
c906108c | 318 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 319 | if such is available. */ |
c906108c SS |
320 | static int can_use_hw_watchpoints; |
321 | ||
920d2a44 AC |
322 | static void |
323 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
324 | struct cmd_list_element *c, | |
325 | const char *value) | |
326 | { | |
3e43a32a MS |
327 | fprintf_filtered (file, |
328 | _("Debugger's willingness to use " | |
329 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
330 | value); |
331 | } | |
332 | ||
fa8d40ab JJ |
333 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
334 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 335 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
336 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
337 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
338 | static void |
339 | show_pending_break_support (struct ui_file *file, int from_tty, | |
340 | struct cmd_list_element *c, | |
341 | const char *value) | |
342 | { | |
3e43a32a MS |
343 | fprintf_filtered (file, |
344 | _("Debugger's behavior regarding " | |
345 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
346 | value); |
347 | } | |
fa8d40ab | 348 | |
491144b5 | 349 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 350 | set with "break" but falling in read-only memory. |
491144b5 | 351 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 352 | use hardware breakpoints. */ |
491144b5 | 353 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
354 | static void |
355 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
356 | struct cmd_list_element *c, | |
357 | const char *value) | |
358 | { | |
3e43a32a MS |
359 | fprintf_filtered (file, |
360 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
361 | value); |
362 | } | |
363 | ||
a25a5a45 PA |
364 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
365 | stopped, and immediately inserts any new breakpoints as soon as | |
366 | they're created. If off (default), GDB keeps breakpoints off of | |
367 | the target as long as possible. That is, it delays inserting | |
368 | breakpoints until the next resume, and removes them again when the | |
369 | target fully stops. This is a bit safer in case GDB crashes while | |
370 | processing user input. */ | |
491144b5 | 371 | static bool always_inserted_mode = false; |
72d0e2c5 | 372 | |
33e5cbd6 | 373 | static void |
74960c60 | 374 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 375 | struct cmd_list_element *c, const char *value) |
74960c60 | 376 | { |
a25a5a45 PA |
377 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
378 | value); | |
74960c60 VP |
379 | } |
380 | ||
b57bacec PA |
381 | /* See breakpoint.h. */ |
382 | ||
33e5cbd6 | 383 | int |
a25a5a45 | 384 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 385 | { |
a25a5a45 PA |
386 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
387 | { | |
388 | /* If breakpoints are global, they should be inserted even if no | |
389 | thread under gdb's control is running, or even if there are | |
390 | no threads under GDB's control yet. */ | |
391 | return 1; | |
392 | } | |
5b6d1e4f | 393 | else |
a25a5a45 | 394 | { |
a25a5a45 PA |
395 | if (always_inserted_mode) |
396 | { | |
397 | /* The user wants breakpoints inserted even if all threads | |
398 | are stopped. */ | |
399 | return 1; | |
400 | } | |
401 | ||
5b6d1e4f PA |
402 | for (inferior *inf : all_inferiors ()) |
403 | if (inf->has_execution () | |
404 | && threads_are_executing (inf->process_target ())) | |
405 | return 1; | |
372316f1 PA |
406 | |
407 | /* Don't remove breakpoints yet if, even though all threads are | |
408 | stopped, we still have events to process. */ | |
08036331 | 409 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
410 | if (tp->resumed |
411 | && tp->suspend.waitstatus_pending_p) | |
412 | return 1; | |
a25a5a45 PA |
413 | } |
414 | return 0; | |
33e5cbd6 | 415 | } |
765dc015 | 416 | |
b775012e LM |
417 | static const char condition_evaluation_both[] = "host or target"; |
418 | ||
419 | /* Modes for breakpoint condition evaluation. */ | |
420 | static const char condition_evaluation_auto[] = "auto"; | |
421 | static const char condition_evaluation_host[] = "host"; | |
422 | static const char condition_evaluation_target[] = "target"; | |
423 | static const char *const condition_evaluation_enums[] = { | |
424 | condition_evaluation_auto, | |
425 | condition_evaluation_host, | |
426 | condition_evaluation_target, | |
427 | NULL | |
428 | }; | |
429 | ||
430 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
431 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
432 | ||
433 | /* Global that we use to display information to the user (gets its value from | |
434 | condition_evaluation_mode_1. */ | |
435 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
436 | ||
437 | /* Translate a condition evaluation mode MODE into either "host" | |
438 | or "target". This is used mostly to translate from "auto" to the | |
439 | real setting that is being used. It returns the translated | |
440 | evaluation mode. */ | |
441 | ||
442 | static const char * | |
443 | translate_condition_evaluation_mode (const char *mode) | |
444 | { | |
445 | if (mode == condition_evaluation_auto) | |
446 | { | |
447 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
448 | return condition_evaluation_target; | |
449 | else | |
450 | return condition_evaluation_host; | |
451 | } | |
452 | else | |
453 | return mode; | |
454 | } | |
455 | ||
456 | /* Discovers what condition_evaluation_auto translates to. */ | |
457 | ||
458 | static const char * | |
459 | breakpoint_condition_evaluation_mode (void) | |
460 | { | |
461 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
462 | } | |
463 | ||
464 | /* Return true if GDB should evaluate breakpoint conditions or false | |
465 | otherwise. */ | |
466 | ||
467 | static int | |
468 | gdb_evaluates_breakpoint_condition_p (void) | |
469 | { | |
470 | const char *mode = breakpoint_condition_evaluation_mode (); | |
471 | ||
472 | return (mode == condition_evaluation_host); | |
473 | } | |
474 | ||
c906108c SS |
475 | /* Are we executing breakpoint commands? */ |
476 | static int executing_breakpoint_commands; | |
477 | ||
c02f5703 MS |
478 | /* Are overlay event breakpoints enabled? */ |
479 | static int overlay_events_enabled; | |
480 | ||
e09342b5 | 481 | /* See description in breakpoint.h. */ |
491144b5 | 482 | bool target_exact_watchpoints = false; |
e09342b5 | 483 | |
c906108c | 484 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 485 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 486 | current breakpoint. */ |
c906108c | 487 | |
5c44784c JM |
488 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
489 | for (B = breakpoint_chain; \ | |
490 | B ? (TMP=B->next, 1): 0; \ | |
491 | B = TMP) | |
c906108c | 492 | |
7cc221ef | 493 | /* Chains of all breakpoints defined. */ |
c906108c | 494 | |
81e6b8eb | 495 | static struct breakpoint *breakpoint_chain; |
c906108c | 496 | |
240edef6 | 497 | /* See breakpoint.h. */ |
43892fdf | 498 | |
240edef6 | 499 | breakpoint_range |
43892fdf SM |
500 | all_breakpoints () |
501 | { | |
502 | return breakpoint_range (breakpoint_chain); | |
503 | } | |
504 | ||
240edef6 | 505 | /* See breakpoint.h. */ |
1428b37a | 506 | |
240edef6 | 507 | breakpoint_safe_range |
1428b37a SM |
508 | all_breakpoints_safe () |
509 | { | |
510 | return breakpoint_safe_range (all_breakpoints ()); | |
511 | } | |
512 | ||
f6d17b2b SM |
513 | /* See breakpoint.h. */ |
514 | ||
515 | tracepoint_range | |
516 | all_tracepoints () | |
517 | { | |
518 | return tracepoint_range (breakpoint_chain); | |
519 | } | |
520 | ||
39ef2f62 | 521 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 522 | |
5d51cd5d | 523 | static std::vector<bp_location *> bp_locations; |
876fa593 | 524 | |
055c879f SM |
525 | /* See breakpoint.h. */ |
526 | ||
527 | const std::vector<bp_location *> & | |
48d7020b SM |
528 | all_bp_locations () |
529 | { | |
530 | return bp_locations; | |
531 | } | |
532 | ||
e0d9a270 SM |
533 | /* Range to iterate over breakpoint locations at a given address. */ |
534 | ||
535 | struct bp_locations_at_addr_range | |
536 | { | |
537 | using iterator = std::vector<bp_location *>::iterator; | |
538 | ||
539 | bp_locations_at_addr_range (CORE_ADDR addr) | |
540 | { | |
541 | struct compare | |
542 | { | |
543 | bool operator() (const bp_location *loc, CORE_ADDR addr_) const | |
544 | { return loc->address < addr_; } | |
545 | ||
546 | bool operator() (CORE_ADDR addr_, const bp_location *loc) const | |
547 | { return addr_ < loc->address; } | |
548 | }; | |
549 | ||
550 | auto it_pair = std::equal_range (bp_locations.begin (), bp_locations.end (), | |
551 | addr, compare ()); | |
552 | ||
553 | m_begin = it_pair.first; | |
554 | m_end = it_pair.second; | |
555 | } | |
556 | ||
557 | iterator begin () const | |
558 | { return m_begin; } | |
559 | ||
560 | iterator end () const | |
561 | { return m_end; } | |
562 | ||
563 | private: | |
564 | iterator m_begin; | |
565 | iterator m_end; | |
566 | }; | |
567 | ||
568 | /* Return a range to iterate over all breakpoint locations exactly at address | |
569 | ADDR. | |
570 | ||
571 | If it's needed to iterate multiple times on the same range, it's possible | |
572 | to save the range in a local variable and use it multiple times: | |
573 | ||
574 | auto range = all_bp_locations_at_addr (addr); | |
575 | ||
576 | for (bp_location *loc : range) | |
577 | // use loc | |
578 | ||
579 | for (bp_location *loc : range) | |
580 | // use loc | |
581 | ||
582 | This saves a bit of time, as it avoids re-doing the binary searches to find | |
583 | the range's boundaries. Just remember not to change the bp_locations vector | |
584 | in the mean time, as it could make the range's iterators stale. */ | |
585 | ||
586 | static bp_locations_at_addr_range | |
587 | all_bp_locations_at_addr (CORE_ADDR addr) | |
588 | { | |
589 | return bp_locations_at_addr_range (addr); | |
590 | } | |
591 | ||
4a64f543 | 592 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 593 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 594 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 595 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 596 | an address you need to read. */ |
876fa593 | 597 | |
f5336ca5 | 598 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 599 | |
4a64f543 MS |
600 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
601 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
602 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
603 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 604 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 605 | |
f5336ca5 | 606 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 607 | |
4a64f543 | 608 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
609 | from the bp_locations array, but for which a hit may still be |
610 | reported by a target. */ | |
1123588c | 611 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 612 | |
c906108c SS |
613 | /* Number of last breakpoint made. */ |
614 | ||
95a42b64 TT |
615 | static int breakpoint_count; |
616 | ||
86b17b60 PA |
617 | /* The value of `breakpoint_count' before the last command that |
618 | created breakpoints. If the last (break-like) command created more | |
619 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
620 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
621 | static int prev_breakpoint_count; | |
c906108c | 622 | |
1042e4c0 SS |
623 | /* Number of last tracepoint made. */ |
624 | ||
95a42b64 | 625 | static int tracepoint_count; |
1042e4c0 | 626 | |
6149aea9 PA |
627 | static struct cmd_list_element *breakpoint_set_cmdlist; |
628 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 629 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 630 | |
badd37ce SDJ |
631 | /* See declaration at breakpoint.h. */ |
632 | ||
633 | struct breakpoint * | |
634 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
635 | void *user_data) | |
636 | { | |
43892fdf SM |
637 | for (breakpoint *b : all_breakpoints ()) |
638 | if (func (b, user_data) != 0) | |
639 | return b; | |
badd37ce | 640 | |
43892fdf | 641 | return nullptr; |
badd37ce SDJ |
642 | } |
643 | ||
468d015d JJ |
644 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
645 | static int | |
646 | breakpoint_enabled (struct breakpoint *b) | |
647 | { | |
0d381245 | 648 | return (b->enable_state == bp_enabled); |
468d015d JJ |
649 | } |
650 | ||
c906108c SS |
651 | /* Set breakpoint count to NUM. */ |
652 | ||
95a42b64 | 653 | static void |
fba45db2 | 654 | set_breakpoint_count (int num) |
c906108c | 655 | { |
86b17b60 | 656 | prev_breakpoint_count = breakpoint_count; |
c906108c | 657 | breakpoint_count = num; |
4fa62494 | 658 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
659 | } |
660 | ||
86b17b60 PA |
661 | /* Used by `start_rbreak_breakpoints' below, to record the current |
662 | breakpoint count before "rbreak" creates any breakpoint. */ | |
663 | static int rbreak_start_breakpoint_count; | |
664 | ||
95a42b64 TT |
665 | /* Called at the start an "rbreak" command to record the first |
666 | breakpoint made. */ | |
86b17b60 | 667 | |
c80049d3 | 668 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 669 | { |
86b17b60 | 670 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
671 | } |
672 | ||
673 | /* Called at the end of an "rbreak" command to record the last | |
674 | breakpoint made. */ | |
86b17b60 | 675 | |
c80049d3 | 676 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 677 | { |
86b17b60 | 678 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
679 | } |
680 | ||
4a64f543 | 681 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
682 | |
683 | void | |
fba45db2 | 684 | clear_breakpoint_hit_counts (void) |
c906108c | 685 | { |
43892fdf | 686 | for (breakpoint *b : all_breakpoints ()) |
c906108c SS |
687 | b->hit_count = 0; |
688 | } | |
689 | ||
c906108c | 690 | \f |
48cb2d85 VP |
691 | /* Return the breakpoint with the specified number, or NULL |
692 | if the number does not refer to an existing breakpoint. */ | |
693 | ||
694 | struct breakpoint * | |
695 | get_breakpoint (int num) | |
696 | { | |
43892fdf | 697 | for (breakpoint *b : all_breakpoints ()) |
48cb2d85 VP |
698 | if (b->number == num) |
699 | return b; | |
700 | ||
43892fdf | 701 | return nullptr; |
48cb2d85 | 702 | } |
5c44784c | 703 | |
c906108c | 704 | \f |
adc36818 | 705 | |
b775012e LM |
706 | /* Mark locations as "conditions have changed" in case the target supports |
707 | evaluating conditions on its side. */ | |
708 | ||
709 | static void | |
710 | mark_breakpoint_modified (struct breakpoint *b) | |
711 | { | |
b775012e LM |
712 | /* This is only meaningful if the target is |
713 | evaluating conditions and if the user has | |
714 | opted for condition evaluation on the target's | |
715 | side. */ | |
716 | if (gdb_evaluates_breakpoint_condition_p () | |
717 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
718 | return; | |
719 | ||
720 | if (!is_breakpoint (b)) | |
721 | return; | |
722 | ||
40cb8ca5 | 723 | for (bp_location *loc : b->locations ()) |
b775012e LM |
724 | loc->condition_changed = condition_modified; |
725 | } | |
726 | ||
727 | /* Mark location as "conditions have changed" in case the target supports | |
728 | evaluating conditions on its side. */ | |
729 | ||
730 | static void | |
731 | mark_breakpoint_location_modified (struct bp_location *loc) | |
732 | { | |
733 | /* This is only meaningful if the target is | |
734 | evaluating conditions and if the user has | |
735 | opted for condition evaluation on the target's | |
736 | side. */ | |
737 | if (gdb_evaluates_breakpoint_condition_p () | |
738 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
739 | ||
740 | return; | |
741 | ||
742 | if (!is_breakpoint (loc->owner)) | |
743 | return; | |
744 | ||
745 | loc->condition_changed = condition_modified; | |
746 | } | |
747 | ||
748 | /* Sets the condition-evaluation mode using the static global | |
749 | condition_evaluation_mode. */ | |
750 | ||
751 | static void | |
eb4c3f4a | 752 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
753 | struct cmd_list_element *c) |
754 | { | |
b775012e LM |
755 | const char *old_mode, *new_mode; |
756 | ||
757 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
758 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
759 | { | |
760 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
761 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
762 | "Using host evaluation mode instead.")); | |
763 | return; | |
764 | } | |
765 | ||
766 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
767 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
768 | ||
abf1152a JK |
769 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
770 | settings was "auto". */ | |
771 | condition_evaluation_mode = condition_evaluation_mode_1; | |
772 | ||
b775012e LM |
773 | /* Only update the mode if the user picked a different one. */ |
774 | if (new_mode != old_mode) | |
775 | { | |
b775012e LM |
776 | /* If the user switched to a different evaluation mode, we |
777 | need to synch the changes with the target as follows: | |
778 | ||
779 | "host" -> "target": Send all (valid) conditions to the target. | |
780 | "target" -> "host": Remove all the conditions from the target. | |
781 | */ | |
782 | ||
b775012e LM |
783 | if (new_mode == condition_evaluation_target) |
784 | { | |
785 | /* Mark everything modified and synch conditions with the | |
786 | target. */ | |
48d7020b | 787 | for (bp_location *loc : all_bp_locations ()) |
b775012e | 788 | mark_breakpoint_location_modified (loc); |
24b21115 | 789 | } |
b775012e LM |
790 | else |
791 | { | |
792 | /* Manually mark non-duplicate locations to synch conditions | |
793 | with the target. We do this to remove all the conditions the | |
794 | target knows about. */ | |
48d7020b | 795 | for (bp_location *loc : all_bp_locations ()) |
b775012e LM |
796 | if (is_breakpoint (loc->owner) && loc->inserted) |
797 | loc->needs_update = 1; | |
798 | } | |
799 | ||
800 | /* Do the update. */ | |
44702360 | 801 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
802 | } |
803 | ||
804 | return; | |
805 | } | |
806 | ||
807 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
808 | what "auto" is translating to. */ | |
809 | ||
810 | static void | |
811 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
812 | struct cmd_list_element *c, const char *value) | |
813 | { | |
814 | if (condition_evaluation_mode == condition_evaluation_auto) | |
815 | fprintf_filtered (file, | |
816 | _("Breakpoint condition evaluation " | |
817 | "mode is %s (currently %s).\n"), | |
818 | value, | |
819 | breakpoint_condition_evaluation_mode ()); | |
820 | else | |
821 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
822 | value); | |
823 | } | |
824 | ||
b5fa468f TBA |
825 | /* Parse COND_STRING in the context of LOC and set as the condition |
826 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
827 | the number of LOC within its owner. In case of parsing error, mark | |
828 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
829 | ||
830 | static void | |
831 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
832 | int bp_num, int loc_num) | |
833 | { | |
834 | bool has_junk = false; | |
835 | try | |
836 | { | |
837 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
838 | block_for_pc (loc->address), 0); | |
839 | if (*cond_string != 0) | |
840 | has_junk = true; | |
841 | else | |
842 | { | |
843 | loc->cond = std::move (new_exp); | |
844 | if (loc->disabled_by_cond && loc->enabled) | |
845 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
846 | "location %d, enabling.\n"), | |
847 | bp_num, loc_num); | |
848 | ||
849 | loc->disabled_by_cond = false; | |
850 | } | |
851 | } | |
852 | catch (const gdb_exception_error &e) | |
853 | { | |
854 | if (loc->enabled) | |
855 | { | |
856 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
857 | BP_NUM is 0 if the breakpoint is being defined for the first | |
858 | time using the "break ... if ..." command, and non-zero if | |
859 | already defined. */ | |
860 | if (bp_num != 0) | |
861 | warning (_("failed to validate condition at location %d.%d, " | |
862 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
863 | else | |
864 | warning (_("failed to validate condition at location %d, " | |
865 | "disabling:\n %s"), loc_num, e.what ()); | |
866 | } | |
867 | ||
868 | loc->disabled_by_cond = true; | |
869 | } | |
870 | ||
871 | if (has_junk) | |
872 | error (_("Garbage '%s' follows condition"), cond_string); | |
873 | } | |
874 | ||
adc36818 | 875 | void |
7a26bd4d | 876 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 877 | int from_tty, bool force) |
adc36818 | 878 | { |
4c55e970 | 879 | if (*exp == 0) |
3a5c3e22 | 880 | { |
4c55e970 TBA |
881 | xfree (b->cond_string); |
882 | b->cond_string = nullptr; | |
3a5c3e22 | 883 | |
4c55e970 | 884 | if (is_watchpoint (b)) |
78319c15 | 885 | static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
886 | else |
887 | { | |
b5fa468f | 888 | int loc_num = 1; |
40cb8ca5 | 889 | for (bp_location *loc : b->locations ()) |
4c55e970 TBA |
890 | { |
891 | loc->cond.reset (); | |
b5fa468f TBA |
892 | if (loc->disabled_by_cond && loc->enabled) |
893 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
894 | "location %d, enabling.\n"), | |
895 | b->number, loc_num); | |
896 | loc->disabled_by_cond = false; | |
897 | loc_num++; | |
4c55e970 TBA |
898 | |
899 | /* No need to free the condition agent expression | |
900 | bytecode (if we have one). We will handle this | |
901 | when we go through update_global_location_list. */ | |
902 | } | |
903 | } | |
1e620590 | 904 | |
adc36818 PM |
905 | if (from_tty) |
906 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
907 | } | |
908 | else | |
909 | { | |
adc36818 PM |
910 | if (is_watchpoint (b)) |
911 | { | |
699bd4cf | 912 | innermost_block_tracker tracker; |
78319c15 | 913 | const char *arg = exp; |
4c55e970 | 914 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 915 | if (*arg != 0) |
adc36818 | 916 | error (_("Junk at end of expression")); |
78319c15 | 917 | watchpoint *w = static_cast<watchpoint *> (b); |
4c55e970 | 918 | w->cond_exp = std::move (new_exp); |
699bd4cf | 919 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
920 | } |
921 | else | |
922 | { | |
4c55e970 TBA |
923 | /* Parse and set condition expressions. We make two passes. |
924 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
925 | is valid in at least one location. If so, the condition |
926 | would be accepted. So we go ahead and set the locations' | |
927 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
928 | the error and the condition string will be rejected. |
929 | This two-pass approach is taken to avoid setting the | |
930 | state of locations in case of a reject. */ | |
40cb8ca5 | 931 | for (bp_location *loc : b->locations ()) |
4c55e970 | 932 | { |
b5fa468f TBA |
933 | try |
934 | { | |
935 | const char *arg = exp; | |
936 | parse_exp_1 (&arg, loc->address, | |
937 | block_for_pc (loc->address), 0); | |
938 | if (*arg != 0) | |
939 | error (_("Junk at end of expression")); | |
940 | break; | |
941 | } | |
942 | catch (const gdb_exception_error &e) | |
943 | { | |
944 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
945 | be the last loc, abandon (if not forced) or continue |
946 | (if forced). */ | |
947 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
948 | throw; |
949 | } | |
4c55e970 TBA |
950 | } |
951 | ||
b5fa468f | 952 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 | 953 | int loc_num = 1; |
40cb8ca5 SM |
954 | for (bp_location *loc : b->locations ()) |
955 | { | |
956 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
957 | loc_num++; | |
958 | } | |
adc36818 | 959 | } |
1e620590 TBA |
960 | |
961 | /* We know that the new condition parsed successfully. The | |
962 | condition string of the breakpoint can be safely updated. */ | |
963 | xfree (b->cond_string); | |
964 | b->cond_string = xstrdup (exp); | |
965 | b->condition_not_parsed = 0; | |
adc36818 | 966 | } |
b775012e LM |
967 | mark_breakpoint_modified (b); |
968 | ||
76727919 | 969 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
970 | } |
971 | ||
79aabb73 TBA |
972 | /* See breakpoint.h. */ |
973 | ||
974 | void | |
975 | set_breakpoint_condition (int bpnum, const char *exp, int from_tty, | |
976 | bool force) | |
977 | { | |
43892fdf | 978 | for (breakpoint *b : all_breakpoints ()) |
79aabb73 TBA |
979 | if (b->number == bpnum) |
980 | { | |
981 | /* Check if this breakpoint has a "stop" method implemented in an | |
982 | extension language. This method and conditions entered into GDB | |
983 | from the CLI are mutually exclusive. */ | |
984 | const struct extension_language_defn *extlang | |
985 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
986 | ||
987 | if (extlang != NULL) | |
988 | { | |
989 | error (_("Only one stop condition allowed. There is currently" | |
990 | " a %s stop condition defined for this breakpoint."), | |
991 | ext_lang_capitalized_name (extlang)); | |
992 | } | |
993 | set_breakpoint_condition (b, exp, from_tty, force); | |
994 | ||
995 | if (is_breakpoint (b)) | |
996 | update_global_location_list (UGLL_MAY_INSERT); | |
997 | ||
998 | return; | |
999 | } | |
1000 | ||
1001 | error (_("No breakpoint number %d."), bpnum); | |
1002 | } | |
1003 | ||
b1d4d8d1 TBA |
1004 | /* The options for the "condition" command. */ |
1005 | ||
1006 | struct condition_command_opts | |
1007 | { | |
1008 | /* For "-force". */ | |
1009 | bool force_condition = false; | |
1010 | }; | |
1011 | ||
1012 | static const gdb::option::option_def condition_command_option_defs[] = { | |
1013 | ||
1014 | gdb::option::flag_option_def<condition_command_opts> { | |
1015 | "force", | |
1016 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
1017 | N_("Set the condition even if it is invalid for all current locations."), | |
1018 | }, | |
1019 | ||
1020 | }; | |
1021 | ||
1022 | /* Create an option_def_group for the "condition" options, with | |
1023 | CC_OPTS as context. */ | |
1024 | ||
1025 | static inline gdb::option::option_def_group | |
1026 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
1027 | { | |
1028 | return {{condition_command_option_defs}, cc_opts}; | |
1029 | } | |
1030 | ||
d55637df TT |
1031 | /* Completion for the "condition" command. */ |
1032 | ||
eb3ff9a5 | 1033 | static void |
6f937416 | 1034 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1035 | completion_tracker &tracker, |
b1d4d8d1 | 1036 | const char *text, const char * /*word*/) |
d55637df | 1037 | { |
b1d4d8d1 TBA |
1038 | bool has_no_arguments = (*text == '\0'); |
1039 | condition_command_opts cc_opts; | |
1040 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1041 | if (gdb::option::complete_options | |
1042 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1043 | return; | |
d55637df | 1044 | |
f1735a53 | 1045 | text = skip_spaces (text); |
b1d4d8d1 | 1046 | const char *space = skip_to_space (text); |
d55637df TT |
1047 | if (*space == '\0') |
1048 | { | |
1049 | int len; | |
d55637df TT |
1050 | |
1051 | if (text[0] == '$') | |
1052 | { | |
b1d4d8d1 | 1053 | tracker.advance_custom_word_point_by (1); |
d55637df | 1054 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1055 | if (!isdigit (text[1])) |
1056 | complete_internalvar (tracker, &text[1]); | |
1057 | return; | |
d55637df TT |
1058 | } |
1059 | ||
b1d4d8d1 TBA |
1060 | /* Suggest the "-force" flag if no arguments are given. If |
1061 | arguments were passed, they either already include the flag, | |
1062 | or we are beyond the point of suggesting it because it's | |
1063 | positionally the first argument. */ | |
1064 | if (has_no_arguments) | |
1065 | gdb::option::complete_on_all_options (tracker, group); | |
1066 | ||
d55637df TT |
1067 | /* We're completing the breakpoint number. */ |
1068 | len = strlen (text); | |
1069 | ||
43892fdf | 1070 | for (breakpoint *b : all_breakpoints ()) |
58ce7251 SDJ |
1071 | { |
1072 | char number[50]; | |
1073 | ||
1074 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1075 | ||
1076 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1077 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1078 | } |
d55637df | 1079 | |
eb3ff9a5 | 1080 | return; |
d55637df TT |
1081 | } |
1082 | ||
b1d4d8d1 TBA |
1083 | /* We're completing the expression part. Skip the breakpoint num. */ |
1084 | const char *exp_start = skip_spaces (space); | |
1085 | tracker.advance_custom_word_point_by (exp_start - text); | |
1086 | text = exp_start; | |
1087 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1088 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1089 | } |
1090 | ||
c906108c SS |
1091 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1092 | ||
1093 | static void | |
0b39b52e | 1094 | condition_command (const char *arg, int from_tty) |
c906108c | 1095 | { |
0b39b52e | 1096 | const char *p; |
52f0bd74 | 1097 | int bnum; |
c906108c SS |
1098 | |
1099 | if (arg == 0) | |
e2e0b3e5 | 1100 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1101 | |
1102 | p = arg; | |
733d554a TBA |
1103 | |
1104 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1105 | condition_command_opts cc_opts; |
1106 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1107 | gdb::option::process_options | |
1108 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1109 | |
c906108c | 1110 | bnum = get_number (&p); |
5c44784c | 1111 | if (bnum == 0) |
8a3fe4f8 | 1112 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c | 1113 | |
79aabb73 | 1114 | set_breakpoint_condition (bnum, p, from_tty, cc_opts.force_condition); |
c906108c SS |
1115 | } |
1116 | ||
a7bdde9e VP |
1117 | /* Check that COMMAND do not contain commands that are suitable |
1118 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1119 | Throw if any such commands is found. */ |
1120 | ||
a7bdde9e VP |
1121 | static void |
1122 | check_no_tracepoint_commands (struct command_line *commands) | |
1123 | { | |
1124 | struct command_line *c; | |
cc59ec59 | 1125 | |
a7bdde9e VP |
1126 | for (c = commands; c; c = c->next) |
1127 | { | |
a7bdde9e | 1128 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1129 | error (_("The 'while-stepping' command can " |
1130 | "only be used for tracepoints")); | |
a7bdde9e | 1131 | |
12973681 TT |
1132 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1133 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1134 | |
1135 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1136 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1137 | command directly. */ |
1138 | if (strstr (c->line, "collect ") == c->line) | |
1139 | error (_("The 'collect' command can only be used for tracepoints")); | |
1140 | ||
51661e93 VP |
1141 | if (strstr (c->line, "teval ") == c->line) |
1142 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1143 | } |
1144 | } | |
1145 | ||
c1fc2657 | 1146 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1147 | { |
c1fc2657 | 1148 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1149 | }; |
1150 | ||
d77f58be SS |
1151 | /* Encapsulate tests for different types of tracepoints. */ |
1152 | ||
3b0871f4 SM |
1153 | static bool |
1154 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1155 | { |
1156 | return (type == bp_tracepoint | |
1157 | || type == bp_fast_tracepoint | |
1158 | || type == bp_static_tracepoint); | |
1159 | } | |
1160 | ||
3b0871f4 SM |
1161 | static bool |
1162 | is_longjmp_type (bptype type) | |
1163 | { | |
1164 | return type == bp_longjmp || type == bp_exception; | |
1165 | } | |
1166 | ||
f2478a7e SM |
1167 | /* See breakpoint.h. */ |
1168 | ||
1169 | bool | |
d77f58be | 1170 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1171 | { |
d9b3f62e | 1172 | return is_tracepoint_type (b->type); |
a7bdde9e | 1173 | } |
d9b3f62e | 1174 | |
a5e364af SM |
1175 | /* Factory function to create an appropriate instance of breakpoint given |
1176 | TYPE. */ | |
1177 | ||
1178 | static std::unique_ptr<breakpoint> | |
1179 | new_breakpoint_from_type (bptype type) | |
1180 | { | |
1181 | breakpoint *b; | |
1182 | ||
1183 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1184 | b = new tracepoint (); |
3b0871f4 | 1185 | else if (is_longjmp_type (type)) |
c1fc2657 | 1186 | b = new longjmp_breakpoint (); |
a5e364af SM |
1187 | else |
1188 | b = new breakpoint (); | |
1189 | ||
1190 | return std::unique_ptr<breakpoint> (b); | |
1191 | } | |
1192 | ||
e5dd4106 | 1193 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1194 | breakpoint. This function will throw an exception if a problem is |
1195 | found. */ | |
48cb2d85 | 1196 | |
95a42b64 TT |
1197 | static void |
1198 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1199 | struct command_line *commands) | |
48cb2d85 | 1200 | { |
d77f58be | 1201 | if (is_tracepoint (b)) |
a7bdde9e | 1202 | { |
c9a6ce02 | 1203 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1204 | struct command_line *c; |
1205 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1206 | |
1207 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1208 | might have included a while-stepping action, while the new |
1209 | ones might not. */ | |
c9a6ce02 PA |
1210 | t->step_count = 0; |
1211 | ||
1212 | /* We need to verify that each top-level element of commands is | |
1213 | valid for tracepoints, that there's at most one | |
1214 | while-stepping element, and that the while-stepping's body | |
1215 | has valid tracing commands excluding nested while-stepping. | |
1216 | We also need to validate the tracepoint action line in the | |
1217 | context of the tracepoint --- validate_actionline actually | |
1218 | has side effects, like setting the tracepoint's | |
1219 | while-stepping STEP_COUNT, in addition to checking if the | |
1220 | collect/teval actions parse and make sense in the | |
1221 | tracepoint's context. */ | |
a7bdde9e VP |
1222 | for (c = commands; c; c = c->next) |
1223 | { | |
a7bdde9e VP |
1224 | if (c->control_type == while_stepping_control) |
1225 | { | |
1226 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1227 | error (_("The 'while-stepping' command " |
1228 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1229 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1230 | error (_("The 'while-stepping' command " |
1231 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1232 | |
1233 | if (while_stepping) | |
3e43a32a MS |
1234 | error (_("The 'while-stepping' command " |
1235 | "can be used only once")); | |
a7bdde9e VP |
1236 | else |
1237 | while_stepping = c; | |
1238 | } | |
c9a6ce02 PA |
1239 | |
1240 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1241 | } |
1242 | if (while_stepping) | |
1243 | { | |
1244 | struct command_line *c2; | |
1245 | ||
12973681 TT |
1246 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1247 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1248 | for (; c2; c2 = c2->next) |
1249 | { | |
a7bdde9e VP |
1250 | if (c2->control_type == while_stepping_control) |
1251 | error (_("The 'while-stepping' command cannot be nested")); | |
1252 | } | |
1253 | } | |
1254 | } | |
1255 | else | |
1256 | { | |
1257 | check_no_tracepoint_commands (commands); | |
1258 | } | |
95a42b64 TT |
1259 | } |
1260 | ||
0fb4aa4b PA |
1261 | /* Return a vector of all the static tracepoints set at ADDR. The |
1262 | caller is responsible for releasing the vector. */ | |
1263 | ||
f51e0e20 | 1264 | std::vector<breakpoint *> |
0fb4aa4b PA |
1265 | static_tracepoints_here (CORE_ADDR addr) |
1266 | { | |
f51e0e20 | 1267 | std::vector<breakpoint *> found; |
0fb4aa4b | 1268 | |
43892fdf | 1269 | for (breakpoint *b : all_breakpoints ()) |
0fb4aa4b PA |
1270 | if (b->type == bp_static_tracepoint) |
1271 | { | |
40cb8ca5 | 1272 | for (bp_location *loc : b->locations ()) |
0fb4aa4b | 1273 | if (loc->address == addr) |
f51e0e20 | 1274 | found.push_back (b); |
0fb4aa4b PA |
1275 | } |
1276 | ||
1277 | return found; | |
1278 | } | |
1279 | ||
95a42b64 | 1280 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1281 | validate that only allowed commands are included. */ |
95a42b64 TT |
1282 | |
1283 | void | |
4a64f543 | 1284 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1285 | counted_command_line &&commands) |
95a42b64 | 1286 | { |
93921405 | 1287 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1288 | |
d1b0a7bf | 1289 | b->commands = std::move (commands); |
76727919 | 1290 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1291 | } |
1292 | ||
45a43567 TT |
1293 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1294 | is not the same as the "silent" that may appear in the breakpoint's | |
1295 | commands. */ | |
1296 | ||
1297 | void | |
1298 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1299 | { | |
1300 | int old_silent = b->silent; | |
1301 | ||
1302 | b->silent = silent; | |
1303 | if (old_silent != silent) | |
76727919 | 1304 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1305 | } |
1306 | ||
1307 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1308 | breakpoint work for any thread. */ | |
1309 | ||
1310 | void | |
1311 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1312 | { | |
1313 | int old_thread = b->thread; | |
1314 | ||
1315 | b->thread = thread; | |
1316 | if (old_thread != thread) | |
76727919 | 1317 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1318 | } |
1319 | ||
1320 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1321 | breakpoint work for any task. */ | |
1322 | ||
1323 | void | |
1324 | breakpoint_set_task (struct breakpoint *b, int task) | |
1325 | { | |
1326 | int old_task = b->task; | |
1327 | ||
1328 | b->task = task; | |
1329 | if (old_task != task) | |
76727919 | 1330 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1331 | } |
1332 | ||
95a42b64 | 1333 | static void |
896b6bda | 1334 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1335 | struct command_line *control) |
95a42b64 | 1336 | { |
d1b0a7bf | 1337 | counted_command_line cmd; |
999700cd PW |
1338 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1339 | NULL after the call to read_command_lines if the user provides an empty | |
1340 | list of command by just typing "end". */ | |
1341 | bool cmd_read = false; | |
95a42b64 | 1342 | |
896b6bda PA |
1343 | std::string new_arg; |
1344 | ||
95a42b64 TT |
1345 | if (arg == NULL || !*arg) |
1346 | { | |
da1df1db | 1347 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1348 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1349 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1350 | breakpoint_count); | |
95a42b64 | 1351 | else if (breakpoint_count > 0) |
896b6bda | 1352 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1353 | } |
da1df1db TBA |
1354 | else |
1355 | { | |
1356 | /* Create a copy of ARG. This is needed because the "commands" | |
1357 | command may be coming from a script. In that case, the read | |
1358 | line buffer is going to be overwritten in the lambda of | |
1359 | 'map_breakpoint_numbers' below when reading the next line | |
1360 | before we are are done parsing the breakpoint numbers. */ | |
1361 | new_arg = arg; | |
1362 | } | |
1363 | arg = new_arg.c_str (); | |
48649e1b TT |
1364 | |
1365 | map_breakpoint_numbers | |
1366 | (arg, [&] (breakpoint *b) | |
1367 | { | |
999700cd | 1368 | if (!cmd_read) |
48649e1b | 1369 | { |
999700cd | 1370 | gdb_assert (cmd == NULL); |
48649e1b | 1371 | if (control != NULL) |
12973681 | 1372 | cmd = control->body_list_0; |
48649e1b TT |
1373 | else |
1374 | { | |
81b1e71c TT |
1375 | std::string str |
1376 | = string_printf (_("Type commands for breakpoint(s) " | |
1377 | "%s, one per line."), | |
1378 | arg); | |
48649e1b | 1379 | |
60b3cef2 TT |
1380 | auto do_validate = [=] (const char *line) |
1381 | { | |
1382 | validate_actionline (line, b); | |
1383 | }; | |
1384 | gdb::function_view<void (const char *)> validator; | |
1385 | if (is_tracepoint (b)) | |
1386 | validator = do_validate; | |
1387 | ||
1388 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1389 | } |
999700cd | 1390 | cmd_read = true; |
48649e1b TT |
1391 | } |
1392 | ||
1393 | /* If a breakpoint was on the list more than once, we don't need to | |
1394 | do anything. */ | |
1395 | if (b->commands != cmd) | |
1396 | { | |
d1b0a7bf | 1397 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1398 | b->commands = cmd; |
76727919 | 1399 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1400 | } |
1401 | }); | |
95a42b64 TT |
1402 | } |
1403 | ||
1404 | static void | |
0b39b52e | 1405 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1406 | { |
1407 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1408 | } |
40c03ae8 EZ |
1409 | |
1410 | /* Like commands_command, but instead of reading the commands from | |
1411 | input stream, takes them from an already parsed command structure. | |
1412 | ||
1413 | This is used by cli-script.c to DTRT with breakpoint commands | |
1414 | that are part of if and while bodies. */ | |
1415 | enum command_control_type | |
896b6bda | 1416 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1417 | { |
95a42b64 TT |
1418 | commands_command_1 (arg, 0, cmd); |
1419 | return simple_control; | |
40c03ae8 | 1420 | } |
876fa593 JK |
1421 | |
1422 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1423 | ||
1424 | static int | |
1425 | bp_location_has_shadow (struct bp_location *bl) | |
1426 | { | |
1427 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1428 | return 0; | |
1429 | if (!bl->inserted) | |
1430 | return 0; | |
1431 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1432 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1433 | return 0; |
1434 | return 1; | |
1435 | } | |
1436 | ||
9d497a19 PA |
1437 | /* Update BUF, which is LEN bytes read from the target address |
1438 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1439 | contents. | |
1440 | ||
1441 | If READBUF is not NULL, this buffer must not overlap with the of | |
1442 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1443 | failed assertion internal error will be raised. */ | |
1444 | ||
1445 | static void | |
1446 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1447 | const gdb_byte *writebuf_org, | |
1448 | ULONGEST memaddr, LONGEST len, | |
1449 | struct bp_target_info *target_info, | |
1450 | struct gdbarch *gdbarch) | |
1451 | { | |
1452 | /* Now do full processing of the found relevant range of elements. */ | |
1453 | CORE_ADDR bp_addr = 0; | |
1454 | int bp_size = 0; | |
1455 | int bptoffset = 0; | |
1456 | ||
1457 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1458 | current_program_space->aspace, 0)) | |
1459 | { | |
1460 | /* The breakpoint is inserted in a different address space. */ | |
1461 | return; | |
1462 | } | |
1463 | ||
1464 | /* Addresses and length of the part of the breakpoint that | |
1465 | we need to copy. */ | |
1466 | bp_addr = target_info->placed_address; | |
1467 | bp_size = target_info->shadow_len; | |
1468 | ||
1469 | if (bp_addr + bp_size <= memaddr) | |
1470 | { | |
1471 | /* The breakpoint is entirely before the chunk of memory we are | |
1472 | reading. */ | |
1473 | return; | |
1474 | } | |
1475 | ||
1476 | if (bp_addr >= memaddr + len) | |
1477 | { | |
1478 | /* The breakpoint is entirely after the chunk of memory we are | |
1479 | reading. */ | |
1480 | return; | |
1481 | } | |
1482 | ||
1483 | /* Offset within shadow_contents. */ | |
1484 | if (bp_addr < memaddr) | |
1485 | { | |
1486 | /* Only copy the second part of the breakpoint. */ | |
1487 | bp_size -= memaddr - bp_addr; | |
1488 | bptoffset = memaddr - bp_addr; | |
1489 | bp_addr = memaddr; | |
1490 | } | |
1491 | ||
1492 | if (bp_addr + bp_size > memaddr + len) | |
1493 | { | |
1494 | /* Only copy the first part of the breakpoint. */ | |
1495 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1496 | } | |
1497 | ||
1498 | if (readbuf != NULL) | |
1499 | { | |
1500 | /* Verify that the readbuf buffer does not overlap with the | |
1501 | shadow_contents buffer. */ | |
1502 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1503 | || readbuf >= (target_info->shadow_contents | |
1504 | + target_info->shadow_len)); | |
1505 | ||
1506 | /* Update the read buffer with this inserted breakpoint's | |
1507 | shadow. */ | |
1508 | memcpy (readbuf + bp_addr - memaddr, | |
1509 | target_info->shadow_contents + bptoffset, bp_size); | |
1510 | } | |
1511 | else | |
1512 | { | |
1513 | const unsigned char *bp; | |
0d5ed153 MR |
1514 | CORE_ADDR addr = target_info->reqstd_address; |
1515 | int placed_size; | |
9d497a19 PA |
1516 | |
1517 | /* Update the shadow with what we want to write to memory. */ | |
1518 | memcpy (target_info->shadow_contents + bptoffset, | |
1519 | writebuf_org + bp_addr - memaddr, bp_size); | |
1520 | ||
1521 | /* Determine appropriate breakpoint contents and size for this | |
1522 | address. */ | |
0d5ed153 | 1523 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1524 | |
1525 | /* Update the final write buffer with this inserted | |
1526 | breakpoint's INSN. */ | |
1527 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1528 | } | |
1529 | } | |
1530 | ||
8defab1a | 1531 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1532 | by replacing any memory breakpoints with their shadowed contents. |
1533 | ||
35c63cd8 JB |
1534 | If READBUF is not NULL, this buffer must not overlap with any of |
1535 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1536 | a failed assertion internal error will be raised. | |
1537 | ||
876fa593 | 1538 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1539 | bl->address - bp_locations_placed_address_before_address_max |
1540 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1541 | The range we were requested to resolve shadows for is: |
1542 | memaddr ... memaddr + len | |
1543 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1544 | memaddr + len <= (bl->address |
f5336ca5 | 1545 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1546 | and: |
f5336ca5 | 1547 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1548 | |
8defab1a | 1549 | void |
f0ba3972 PA |
1550 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1551 | const gdb_byte *writebuf_org, | |
1552 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1553 | { |
4a64f543 MS |
1554 | /* Left boundary, right boundary and median element of our binary |
1555 | search. */ | |
876fa593 JK |
1556 | unsigned bc_l, bc_r, bc; |
1557 | ||
4a64f543 MS |
1558 | /* Find BC_L which is a leftmost element which may affect BUF |
1559 | content. It is safe to report lower value but a failure to | |
1560 | report higher one. */ | |
876fa593 JK |
1561 | |
1562 | bc_l = 0; | |
5d51cd5d | 1563 | bc_r = bp_locations.size (); |
876fa593 JK |
1564 | while (bc_l + 1 < bc_r) |
1565 | { | |
35df4500 | 1566 | struct bp_location *bl; |
876fa593 JK |
1567 | |
1568 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1569 | bl = bp_locations[bc]; |
876fa593 | 1570 | |
4a64f543 MS |
1571 | /* Check first BL->ADDRESS will not overflow due to the added |
1572 | constant. Then advance the left boundary only if we are sure | |
1573 | the BC element can in no way affect the BUF content (MEMADDR | |
1574 | to MEMADDR + LEN range). | |
876fa593 | 1575 | |
f5336ca5 | 1576 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1577 | offset so that we cannot miss a breakpoint with its shadow |
1578 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1579 | |
f5336ca5 | 1580 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1581 | >= bl->address) |
f5336ca5 | 1582 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1583 | <= memaddr)) |
876fa593 JK |
1584 | bc_l = bc; |
1585 | else | |
1586 | bc_r = bc; | |
1587 | } | |
1588 | ||
128070bb PA |
1589 | /* Due to the binary search above, we need to make sure we pick the |
1590 | first location that's at BC_L's address. E.g., if there are | |
1591 | multiple locations at the same address, BC_L may end up pointing | |
1592 | at a duplicate location, and miss the "master"/"inserted" | |
1593 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1594 | B: | |
1595 | ||
1596 | L1@A, L2@A, L3@B, ... | |
1597 | ||
1598 | BC_L could end up pointing at location L2, while the "master" | |
1599 | location could be L1. Since the `loc->inserted' flag is only set | |
1600 | on "master" locations, we'd forget to restore the shadow of L1 | |
1601 | and L2. */ | |
1602 | while (bc_l > 0 | |
f5336ca5 | 1603 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1604 | bc_l--; |
1605 | ||
876fa593 JK |
1606 | /* Now do full processing of the found relevant range of elements. */ |
1607 | ||
5d51cd5d | 1608 | for (bc = bc_l; bc < bp_locations.size (); bc++) |
01add95b SM |
1609 | { |
1610 | struct bp_location *bl = bp_locations[bc]; | |
876fa593 | 1611 | |
01add95b SM |
1612 | /* bp_location array has BL->OWNER always non-NULL. */ |
1613 | if (bl->owner->type == bp_none) | |
1614 | warning (_("reading through apparently deleted breakpoint #%d?"), | |
1615 | bl->owner->number); | |
ffce0d52 | 1616 | |
01add95b SM |
1617 | /* Performance optimization: any further element can no longer affect BUF |
1618 | content. */ | |
876fa593 | 1619 | |
01add95b SM |
1620 | if (bl->address >= bp_locations_placed_address_before_address_max |
1621 | && (memaddr + len | |
1622 | <= (bl->address | |
1623 | - bp_locations_placed_address_before_address_max))) | |
1624 | break; | |
876fa593 | 1625 | |
01add95b SM |
1626 | if (!bp_location_has_shadow (bl)) |
1627 | continue; | |
6c95b8df | 1628 | |
01add95b SM |
1629 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1630 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1631 | } | |
c906108c | 1632 | } |
9d497a19 | 1633 | |
f2478a7e | 1634 | /* See breakpoint.h. */ |
b775012e | 1635 | |
f2478a7e | 1636 | bool |
b775012e LM |
1637 | is_breakpoint (const struct breakpoint *bpt) |
1638 | { | |
1639 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1640 | || bpt->type == bp_hardware_breakpoint |
1641 | || bpt->type == bp_dprintf); | |
b775012e LM |
1642 | } |
1643 | ||
60e1c644 PA |
1644 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1645 | ||
f2478a7e | 1646 | static bool |
d77f58be | 1647 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1648 | { |
1649 | return (bpt->type == bp_hardware_watchpoint | |
1650 | || bpt->type == bp_read_watchpoint | |
1651 | || bpt->type == bp_access_watchpoint); | |
1652 | } | |
7270d8f2 | 1653 | |
f2478a7e | 1654 | /* See breakpoint.h. */ |
60e1c644 | 1655 | |
f2478a7e | 1656 | bool |
d77f58be | 1657 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1658 | { |
1659 | return (is_hardware_watchpoint (bpt) | |
1660 | || bpt->type == bp_watchpoint); | |
1661 | } | |
1662 | ||
3a5c3e22 PA |
1663 | /* Returns true if the current thread and its running state are safe |
1664 | to evaluate or update watchpoint B. Watchpoints on local | |
1665 | expressions need to be evaluated in the context of the thread that | |
1666 | was current when the watchpoint was created, and, that thread needs | |
1667 | to be stopped to be able to select the correct frame context. | |
1668 | Watchpoints on global expressions can be evaluated on any thread, | |
1669 | and in any state. It is presently left to the target allowing | |
1670 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1671 | |
1672 | static int | |
3a5c3e22 | 1673 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1674 | { |
c1fc2657 | 1675 | return (b->pspace == current_program_space |
d7e15655 TT |
1676 | && (b->watchpoint_thread == null_ptid |
1677 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1678 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1679 | } |
1680 | ||
d0fb5eae JK |
1681 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1682 | associated bp_watchpoint_scope breakpoint. */ | |
1683 | ||
1684 | static void | |
3a5c3e22 | 1685 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1686 | { |
c1fc2657 | 1687 | if (w->related_breakpoint != w) |
d0fb5eae | 1688 | { |
c1fc2657 SM |
1689 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1690 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1691 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1692 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1693 | w->related_breakpoint = w; | |
d0fb5eae | 1694 | } |
c1fc2657 | 1695 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1696 | } |
1697 | ||
bb9d5f81 PP |
1698 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1699 | watchpoint W. */ | |
1700 | ||
1701 | static struct value * | |
1702 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1703 | { | |
1704 | struct value *bit_val; | |
1705 | ||
1706 | if (val == NULL) | |
1707 | return NULL; | |
1708 | ||
1709 | bit_val = allocate_value (value_type (val)); | |
1710 | ||
1711 | unpack_value_bitfield (bit_val, | |
1712 | w->val_bitpos, | |
1713 | w->val_bitsize, | |
1714 | value_contents_for_printing (val), | |
1715 | value_offset (val), | |
1716 | val); | |
1717 | ||
1718 | return bit_val; | |
1719 | } | |
1720 | ||
c6d81124 PA |
1721 | /* Allocate a dummy location and add it to B, which must be a software |
1722 | watchpoint. This is required because even if a software watchpoint | |
1723 | is not watching any memory, bpstat_stop_status requires a location | |
1724 | to be able to report stops. */ | |
1725 | ||
1726 | static void | |
1727 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1728 | struct program_space *pspace) | |
1729 | { | |
1730 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1731 | ||
1732 | b->loc = allocate_bp_location (b); | |
1733 | b->loc->pspace = pspace; | |
1734 | b->loc->address = -1; | |
1735 | b->loc->length = -1; | |
1736 | } | |
1737 | ||
1738 | /* Returns true if B is a software watchpoint that is not watching any | |
1739 | memory (e.g., "watch $pc"). */ | |
1740 | ||
f2478a7e | 1741 | static bool |
c6d81124 PA |
1742 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1743 | { | |
1744 | return (b->type == bp_watchpoint | |
1745 | && b->loc != NULL | |
1746 | && b->loc->next == NULL | |
1747 | && b->loc->address == -1 | |
1748 | && b->loc->length == -1); | |
1749 | } | |
1750 | ||
567e1b4e JB |
1751 | /* Assuming that B is a watchpoint: |
1752 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1753 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1754 | - Evaluate the condition if there is one, and store the result |
1755 | in b->loc->cond. | |
a5606eee VP |
1756 | - Update the list of values that must be watched in B->loc. |
1757 | ||
4a64f543 MS |
1758 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1759 | nothing. If this is local watchpoint that is out of scope, delete | |
1760 | it. | |
1761 | ||
1762 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1763 | removed + inserted on each stop here. Normal breakpoints must | |
1764 | never be removed because they might be missed by a running thread | |
1765 | when debugging in non-stop mode. On the other hand, hardware | |
1766 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1767 | to each LWP since they are stored in each LWP's hardware debug | |
1768 | registers. Therefore, such LWP must be stopped first in order to | |
1769 | be able to modify its hardware watchpoints. | |
1770 | ||
1771 | Hardware watchpoints must be reset exactly once after being | |
1772 | presented to the user. It cannot be done sooner, because it would | |
1773 | reset the data used to present the watchpoint hit to the user. And | |
1774 | it must not be done later because it could display the same single | |
1775 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1776 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1777 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1778 | not user-visible - its hit is suppressed if the memory content has | |
1779 | not changed. | |
1780 | ||
1781 | The following constraints influence the location where we can reset | |
1782 | hardware watchpoints: | |
1783 | ||
1784 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1785 | called several times when GDB stops. | |
1786 | ||
1787 | [linux] | |
1788 | * Multiple hardware watchpoints can be hit at the same time, | |
1789 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1790 | hit at a time as the reason for stopping, and all the other hits | |
1791 | are presented later, one after the other, each time the user | |
1792 | requests the execution to be resumed. Execution is not resumed | |
1793 | for the threads still having pending hit event stored in | |
1794 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1795 | the inferior on the first stop the thread hit event is kept being | |
1796 | reported from its cached value by linux_nat_stopped_data_address | |
1797 | until the real thread resume happens after the watchpoint gets | |
1798 | presented and thus its LWP_INFO->STATUS gets reset. | |
1799 | ||
1800 | Therefore the hardware watchpoint hit can get safely reset on the | |
1801 | watchpoint removal from inferior. */ | |
a79d3c27 | 1802 | |
b40ce68a | 1803 | static void |
3a5c3e22 | 1804 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1805 | { |
a5606eee | 1806 | int within_current_scope; |
a5606eee | 1807 | struct frame_id saved_frame_id; |
66076460 | 1808 | int frame_saved; |
a5606eee | 1809 | |
f6bc2008 PA |
1810 | /* If this is a local watchpoint, we only want to check if the |
1811 | watchpoint frame is in scope if the current thread is the thread | |
1812 | that was used to create the watchpoint. */ | |
1813 | if (!watchpoint_in_thread_scope (b)) | |
1814 | return; | |
1815 | ||
c1fc2657 | 1816 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1817 | return; |
1818 | ||
66076460 | 1819 | frame_saved = 0; |
a5606eee VP |
1820 | |
1821 | /* Determine if the watchpoint is within scope. */ | |
1822 | if (b->exp_valid_block == NULL) | |
1823 | within_current_scope = 1; | |
1824 | else | |
1825 | { | |
b5db5dfc UW |
1826 | struct frame_info *fi = get_current_frame (); |
1827 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1828 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1829 | ||
c9cf6e20 MG |
1830 | /* If we're at a point where the stack has been destroyed |
1831 | (e.g. in a function epilogue), unwinding may not work | |
1832 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1833 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1834 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1835 | return; |
66076460 DJ |
1836 | |
1837 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1838 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1839 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1840 | took a frame parameter, so that we didn't have to change the |
1841 | selected frame. */ | |
66076460 DJ |
1842 | frame_saved = 1; |
1843 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1844 | ||
a5606eee VP |
1845 | fi = frame_find_by_id (b->watchpoint_frame); |
1846 | within_current_scope = (fi != NULL); | |
1847 | if (within_current_scope) | |
1848 | select_frame (fi); | |
1849 | } | |
1850 | ||
b5db5dfc UW |
1851 | /* We don't free locations. They are stored in the bp_location array |
1852 | and update_global_location_list will eventually delete them and | |
1853 | remove breakpoints if needed. */ | |
c1fc2657 | 1854 | b->loc = NULL; |
b5db5dfc | 1855 | |
a5606eee VP |
1856 | if (within_current_scope && reparse) |
1857 | { | |
bbc13ae3 | 1858 | const char *s; |
d63d0675 | 1859 | |
4d01a485 | 1860 | b->exp.reset (); |
d63d0675 | 1861 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1862 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1863 | /* If the meaning of expression itself changed, the old value is |
1864 | no longer relevant. We don't want to report a watchpoint hit | |
1865 | to the user when the old value and the new value may actually | |
1866 | be completely different objects. */ | |
fa4727a6 | 1867 | b->val = NULL; |
4c1d86d9 | 1868 | b->val_valid = false; |
60e1c644 PA |
1869 | |
1870 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1871 | expression is stored in the breakpoint object, not in the | |
1872 | locations (re)created below. */ | |
c1fc2657 | 1873 | if (b->cond_string != NULL) |
60e1c644 | 1874 | { |
4d01a485 | 1875 | b->cond_exp.reset (); |
60e1c644 | 1876 | |
c1fc2657 | 1877 | s = b->cond_string; |
1bb9788d | 1878 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1879 | } |
a5606eee | 1880 | } |
a5606eee VP |
1881 | |
1882 | /* If we failed to parse the expression, for example because | |
1883 | it refers to a global variable in a not-yet-loaded shared library, | |
1884 | don't try to insert watchpoint. We don't automatically delete | |
1885 | such watchpoint, though, since failure to parse expression | |
1886 | is different from out-of-scope watchpoint. */ | |
55f6301a | 1887 | if (!target_has_execution ()) |
2d134ed3 PA |
1888 | { |
1889 | /* Without execution, memory can't change. No use to try and | |
1890 | set watchpoint locations. The watchpoint will be reset when | |
1891 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1892 | if (!can_use_hw_watchpoints) |
1893 | { | |
c1fc2657 SM |
1894 | if (b->ops->works_in_software_mode (b)) |
1895 | b->type = bp_watchpoint; | |
e8369a73 | 1896 | else |
638aa5a1 AB |
1897 | error (_("Can't set read/access watchpoint when " |
1898 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1899 | } |
2d134ed3 PA |
1900 | } |
1901 | else if (within_current_scope && b->exp) | |
a5606eee | 1902 | { |
a6535de1 | 1903 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1904 | struct value *v, *result; |
2d134ed3 | 1905 | struct program_space *frame_pspace; |
a5606eee | 1906 | |
1eaebe02 | 1907 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &v, &result, |
413403fc | 1908 | &val_chain, false); |
a5606eee | 1909 | |
a5606eee VP |
1910 | /* Avoid setting b->val if it's already set. The meaning of |
1911 | b->val is 'the last value' user saw, and we should update | |
1912 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1913 | happens, the code that reports it updates b->val directly. |
1914 | We don't keep track of the memory value for masked | |
1915 | watchpoints. */ | |
c1fc2657 | 1916 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1917 | { |
bb9d5f81 | 1918 | if (b->val_bitsize != 0) |
850645cf TT |
1919 | v = extract_bitfield_from_watchpoint_value (b, v); |
1920 | b->val = release_value (v); | |
4c1d86d9 | 1921 | b->val_valid = true; |
fa4727a6 | 1922 | } |
a5606eee | 1923 | |
2d134ed3 PA |
1924 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1925 | ||
a5606eee | 1926 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1927 | gdb_assert (!val_chain.empty ()); |
1928 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1929 | { |
a6535de1 TT |
1930 | v = iter.get (); |
1931 | ||
a5606eee VP |
1932 | /* If it's a memory location, and GDB actually needed |
1933 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1934 | must watch it. If the first value returned is |
1935 | still lazy, that means an error occurred reading it; | |
1936 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1937 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1938 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1939 | { |
1940 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1941 | |
a5606eee VP |
1942 | /* We only watch structs and arrays if user asked |
1943 | for it explicitly, never if they just happen to | |
1944 | appear in the middle of some value chain. */ | |
fa4727a6 | 1945 | if (v == result |
78134374 SM |
1946 | || (vtype->code () != TYPE_CODE_STRUCT |
1947 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
1948 | { |
1949 | CORE_ADDR addr; | |
f486487f | 1950 | enum target_hw_bp_type type; |
a5606eee | 1951 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1952 | int bitpos = 0, bitsize = 0; |
1953 | ||
1954 | if (value_bitsize (v) != 0) | |
1955 | { | |
1956 | /* Extract the bit parameters out from the bitfield | |
1957 | sub-expression. */ | |
1958 | bitpos = value_bitpos (v); | |
1959 | bitsize = value_bitsize (v); | |
1960 | } | |
1961 | else if (v == result && b->val_bitsize != 0) | |
1962 | { | |
1963 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1964 | lvalue whose bit parameters are saved in the fields | |
1965 | VAL_BITPOS and VAL_BITSIZE. */ | |
1966 | bitpos = b->val_bitpos; | |
1967 | bitsize = b->val_bitsize; | |
1968 | } | |
a5606eee | 1969 | |
42ae5230 | 1970 | addr = value_address (v); |
bb9d5f81 PP |
1971 | if (bitsize != 0) |
1972 | { | |
1973 | /* Skip the bytes that don't contain the bitfield. */ | |
1974 | addr += bitpos / 8; | |
1975 | } | |
1976 | ||
a5606eee | 1977 | type = hw_write; |
c1fc2657 | 1978 | if (b->type == bp_read_watchpoint) |
a5606eee | 1979 | type = hw_read; |
c1fc2657 | 1980 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1981 | type = hw_access; |
3a5c3e22 | 1982 | |
c1fc2657 SM |
1983 | loc = allocate_bp_location (b); |
1984 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1985 | ; |
1986 | *tmp = loc; | |
8ee511af | 1987 | loc->gdbarch = value_type (v)->arch (); |
6c95b8df PA |
1988 | |
1989 | loc->pspace = frame_pspace; | |
f17d9474 | 1990 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1991 | |
1992 | if (bitsize != 0) | |
1993 | { | |
1994 | /* Just cover the bytes that make up the bitfield. */ | |
1995 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1996 | } | |
1997 | else | |
1998 | loc->length = TYPE_LENGTH (value_type (v)); | |
1999 | ||
a5606eee VP |
2000 | loc->watchpoint_type = type; |
2001 | } | |
2002 | } | |
9fa40276 TJB |
2003 | } |
2004 | ||
2005 | /* Change the type of breakpoint between hardware assisted or | |
2006 | an ordinary watchpoint depending on the hardware support | |
2007 | and free hardware slots. REPARSE is set when the inferior | |
2008 | is started. */ | |
a9634178 | 2009 | if (reparse) |
9fa40276 | 2010 | { |
e09342b5 | 2011 | int reg_cnt; |
9fa40276 | 2012 | enum bp_loc_type loc_type; |
a5606eee | 2013 | |
a9634178 | 2014 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2015 | |
2016 | if (reg_cnt) | |
9fa40276 TJB |
2017 | { |
2018 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2019 | enum bptype type; |
9fa40276 | 2020 | |
a9634178 TJB |
2021 | /* Use an exact watchpoint when there's only one memory region to be |
2022 | watched, and only one debug register is needed to watch it. */ | |
2023 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2024 | ||
9fa40276 | 2025 | /* We need to determine how many resources are already |
e09342b5 TJB |
2026 | used for all other hardware watchpoints plus this one |
2027 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2028 | this watchpoint in as well. */ |
2029 | ||
2030 | /* If this is a software watchpoint, we try to turn it | |
2031 | to a hardware one -- count resources as if B was of | |
2032 | hardware watchpoint type. */ | |
c1fc2657 | 2033 | type = b->type; |
a1398e0c PA |
2034 | if (type == bp_watchpoint) |
2035 | type = bp_hardware_watchpoint; | |
2036 | ||
2037 | /* This watchpoint may or may not have been placed on | |
2038 | the list yet at this point (it won't be in the list | |
2039 | if we're trying to create it for the first time, | |
2040 | through watch_command), so always account for it | |
2041 | manually. */ | |
2042 | ||
2043 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2044 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2045 | |
2046 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2047 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2048 | |
2049 | target_resources_ok | |
2050 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2051 | if (target_resources_ok <= 0) |
a9634178 | 2052 | { |
c1fc2657 | 2053 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
2054 | |
2055 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2056 | error (_("Target does not support this type of " |
2057 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2058 | else if (target_resources_ok < 0 && !sw_mode) |
2059 | error (_("There are not enough available hardware " | |
2060 | "resources for this watchpoint.")); | |
a1398e0c PA |
2061 | |
2062 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2063 | b->type = bp_watchpoint; |
a1398e0c PA |
2064 | } |
2065 | else | |
2066 | { | |
2067 | /* If this was a software watchpoint, we've just | |
2068 | found we have enough resources to turn it to a | |
2069 | hardware watchpoint. Otherwise, this is a | |
2070 | nop. */ | |
c1fc2657 | 2071 | b->type = type; |
a9634178 | 2072 | } |
9fa40276 | 2073 | } |
c1fc2657 | 2074 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
2075 | { |
2076 | if (!can_use_hw_watchpoints) | |
2077 | error (_("Can't set read/access watchpoint when " | |
2078 | "hardware watchpoints are disabled.")); | |
2079 | else | |
2080 | error (_("Expression cannot be implemented with " | |
2081 | "read/access watchpoint.")); | |
2082 | } | |
9fa40276 | 2083 | else |
c1fc2657 | 2084 | b->type = bp_watchpoint; |
9fa40276 | 2085 | |
c1fc2657 | 2086 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 2087 | : bp_loc_hardware_watchpoint); |
40cb8ca5 | 2088 | for (bp_location *bl : b->locations ()) |
9fa40276 TJB |
2089 | bl->loc_type = loc_type; |
2090 | } | |
2091 | ||
c7437ca6 PA |
2092 | /* If a software watchpoint is not watching any memory, then the |
2093 | above left it without any location set up. But, | |
2094 | bpstat_stop_status requires a location to be able to report | |
2095 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2096 | if (b->type == bp_watchpoint && b->loc == NULL) |
2097 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2098 | } |
2099 | else if (!within_current_scope) | |
7270d8f2 | 2100 | { |
ac74f770 MS |
2101 | printf_filtered (_("\ |
2102 | Watchpoint %d deleted because the program has left the block\n\ | |
2103 | in which its expression is valid.\n"), | |
c1fc2657 | 2104 | b->number); |
d0fb5eae | 2105 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2106 | } |
a5606eee VP |
2107 | |
2108 | /* Restore the selected frame. */ | |
66076460 DJ |
2109 | if (frame_saved) |
2110 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2111 | } |
2112 | ||
a5606eee | 2113 | |
74960c60 | 2114 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2115 | inserted in the inferior. We don't differentiate the type of BL's owner |
2116 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2117 | breakpoint_ops is not defined, because in insert_bp_location, | |
2118 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2119 | static int |
35df4500 | 2120 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2121 | { |
35df4500 | 2122 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2123 | return 0; |
2124 | ||
35df4500 | 2125 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2126 | return 0; |
2127 | ||
b5fa468f TBA |
2128 | if (!bl->enabled || bl->disabled_by_cond |
2129 | || bl->shlib_disabled || bl->duplicate) | |
74960c60 VP |
2130 | return 0; |
2131 | ||
f8eba3c6 TT |
2132 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2133 | return 0; | |
2134 | ||
56710373 PA |
2135 | /* This is set for example, when we're attached to the parent of a |
2136 | vfork, and have detached from the child. The child is running | |
2137 | free, and we expect it to do an exec or exit, at which point the | |
2138 | OS makes the parent schedulable again (and the target reports | |
2139 | that the vfork is done). Until the child is done with the shared | |
2140 | memory region, do not insert breakpoints in the parent, otherwise | |
2141 | the child could still trip on the parent's breakpoints. Since | |
2142 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2143 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2144 | return 0; |
2145 | ||
31e77af2 | 2146 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2147 | location, except if the breakpoint is a single-step breakpoint, |
2148 | and the breakpoint's thread is the thread which is stepping past | |
2149 | a breakpoint. */ | |
31e77af2 PA |
2150 | if ((bl->loc_type == bp_loc_software_breakpoint |
2151 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2152 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2153 | bl->address) |
2154 | /* The single-step breakpoint may be inserted at the location | |
2155 | we're trying to step if the instruction branches to itself. | |
2156 | However, the instruction won't be executed at all and it may | |
2157 | break the semantics of the instruction, for example, the | |
2158 | instruction is a conditional branch or updates some flags. | |
2159 | We can't fix it unless GDB is able to emulate the instruction | |
2160 | or switch to displaced stepping. */ | |
2161 | && !(bl->owner->type == bp_single_step | |
2162 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2163 | { |
1eb8556f SM |
2164 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2165 | paddress (bl->gdbarch, bl->address)); | |
e558d7c1 PA |
2166 | return 0; |
2167 | } | |
31e77af2 | 2168 | |
963f9c80 PA |
2169 | /* Don't insert watchpoints if we're trying to step past the |
2170 | instruction that triggered one. */ | |
2171 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2172 | && stepping_past_nonsteppable_watchpoint ()) | |
2173 | { | |
1eb8556f | 2174 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2175 | "skipping watchpoint at %s:%d", |
1eb8556f | 2176 | paddress (bl->gdbarch, bl->address), bl->length); |
963f9c80 PA |
2177 | return 0; |
2178 | } | |
2179 | ||
74960c60 VP |
2180 | return 1; |
2181 | } | |
2182 | ||
934709f0 PW |
2183 | /* Same as should_be_inserted but does the check assuming |
2184 | that the location is not duplicated. */ | |
2185 | ||
2186 | static int | |
2187 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2188 | { | |
2189 | int result; | |
2190 | const int save_duplicate = bl->duplicate; | |
2191 | ||
2192 | bl->duplicate = 0; | |
2193 | result = should_be_inserted (bl); | |
2194 | bl->duplicate = save_duplicate; | |
2195 | return result; | |
2196 | } | |
2197 | ||
b775012e LM |
2198 | /* Parses a conditional described by an expression COND into an |
2199 | agent expression bytecode suitable for evaluation | |
2200 | by the bytecode interpreter. Return NULL if there was | |
2201 | any error during parsing. */ | |
2202 | ||
833177a4 | 2203 | static agent_expr_up |
b775012e LM |
2204 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2205 | { | |
833177a4 | 2206 | if (cond == NULL) |
b775012e LM |
2207 | return NULL; |
2208 | ||
833177a4 PA |
2209 | agent_expr_up aexpr; |
2210 | ||
b775012e LM |
2211 | /* We don't want to stop processing, so catch any errors |
2212 | that may show up. */ | |
a70b8144 | 2213 | try |
b775012e | 2214 | { |
036e657b | 2215 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2216 | } |
2217 | ||
230d2906 | 2218 | catch (const gdb_exception_error &ex) |
b775012e LM |
2219 | { |
2220 | /* If we got here, it means the condition could not be parsed to a valid | |
2221 | bytecode expression and thus can't be evaluated on the target's side. | |
2222 | It's no use iterating through the conditions. */ | |
b775012e LM |
2223 | } |
2224 | ||
2225 | /* We have a valid agent expression. */ | |
2226 | return aexpr; | |
2227 | } | |
2228 | ||
2229 | /* Based on location BL, create a list of breakpoint conditions to be | |
2230 | passed on to the target. If we have duplicated locations with different | |
2231 | conditions, we will add such conditions to the list. The idea is that the | |
2232 | target will evaluate the list of conditions and will only notify GDB when | |
2233 | one of them is true. */ | |
2234 | ||
2235 | static void | |
2236 | build_target_condition_list (struct bp_location *bl) | |
2237 | { | |
b775012e LM |
2238 | int null_condition_or_parse_error = 0; |
2239 | int modified = bl->needs_update; | |
b775012e | 2240 | |
8b4f3082 | 2241 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2242 | bl->target_info.conditions.clear (); |
8b4f3082 | 2243 | |
b775012e LM |
2244 | /* This is only meaningful if the target is |
2245 | evaluating conditions and if the user has | |
2246 | opted for condition evaluation on the target's | |
2247 | side. */ | |
2248 | if (gdb_evaluates_breakpoint_condition_p () | |
2249 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2250 | return; | |
2251 | ||
e0d9a270 SM |
2252 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2253 | ||
b775012e | 2254 | /* Do a first pass to check for locations with no assigned |
7f32a4d5 PA |
2255 | conditions or conditions that fail to parse to a valid agent |
2256 | expression bytecode. If any of these happen, then it's no use to | |
2257 | send conditions to the target since this location will always | |
2258 | trigger and generate a response back to GDB. Note we consider | |
2259 | all locations at the same address irrespective of type, i.e., | |
2260 | even if the locations aren't considered duplicates (e.g., | |
2261 | software breakpoint and hardware breakpoint at the same | |
2262 | address). */ | |
e0d9a270 | 2263 | for (bp_location *loc : loc_range) |
b775012e | 2264 | { |
b775012e LM |
2265 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2266 | { | |
2267 | if (modified) | |
2268 | { | |
b775012e LM |
2269 | /* Re-parse the conditions since something changed. In that |
2270 | case we already freed the condition bytecodes (see | |
2271 | force_breakpoint_reinsertion). We just | |
2272 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2273 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2274 | loc->cond.get ()); | |
b775012e LM |
2275 | } |
2276 | ||
2277 | /* If we have a NULL bytecode expression, it means something | |
2278 | went wrong or we have a null condition expression. */ | |
2279 | if (!loc->cond_bytecode) | |
2280 | { | |
2281 | null_condition_or_parse_error = 1; | |
2282 | break; | |
2283 | } | |
2284 | } | |
2285 | } | |
2286 | ||
2287 | /* If any of these happened, it means we will have to evaluate the conditions | |
2288 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2289 | for all the other duplicate locations, thus we free all of them here. | |
2290 | ||
2291 | This is so we have a finer control over which locations' conditions are | |
2292 | being evaluated by GDB or the remote stub. */ | |
2293 | if (null_condition_or_parse_error) | |
2294 | { | |
e0d9a270 | 2295 | for (bp_location *loc : loc_range) |
b775012e | 2296 | { |
b775012e LM |
2297 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2298 | { | |
2299 | /* Only go as far as the first NULL bytecode is | |
2300 | located. */ | |
2301 | if (!loc->cond_bytecode) | |
2302 | return; | |
2303 | ||
833177a4 | 2304 | loc->cond_bytecode.reset (); |
b775012e LM |
2305 | } |
2306 | } | |
2307 | } | |
2308 | ||
7f32a4d5 PA |
2309 | /* No NULL conditions or failed bytecode generation. Build a |
2310 | condition list for this location's address. If we have software | |
2311 | and hardware locations at the same address, they aren't | |
2312 | considered duplicates, but we still marge all the conditions | |
2313 | anyway, as it's simpler, and doesn't really make a practical | |
2314 | difference. */ | |
e0d9a270 SM |
2315 | for (bp_location *loc : loc_range) |
2316 | if (loc->cond | |
2317 | && is_breakpoint (loc->owner) | |
2318 | && loc->pspace->num == bl->pspace->num | |
2319 | && loc->owner->enable_state == bp_enabled | |
2320 | && loc->enabled | |
2321 | && !loc->disabled_by_cond) | |
2322 | { | |
2323 | /* Add the condition to the vector. This will be used later | |
2324 | to send the conditions to the target. */ | |
2325 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2326 | } | |
b775012e LM |
2327 | |
2328 | return; | |
2329 | } | |
2330 | ||
d3ce09f5 SS |
2331 | /* Parses a command described by string CMD into an agent expression |
2332 | bytecode suitable for evaluation by the bytecode interpreter. | |
2333 | Return NULL if there was any error during parsing. */ | |
2334 | ||
833177a4 | 2335 | static agent_expr_up |
d3ce09f5 SS |
2336 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2337 | { | |
bbc13ae3 KS |
2338 | const char *cmdrest; |
2339 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2340 | struct gdbarch *gdbarch = get_current_arch (); |
2341 | ||
833177a4 | 2342 | if (cmd == NULL) |
d3ce09f5 SS |
2343 | return NULL; |
2344 | ||
2345 | cmdrest = cmd; | |
2346 | ||
2347 | if (*cmdrest == ',') | |
2348 | ++cmdrest; | |
f1735a53 | 2349 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2350 | |
2351 | if (*cmdrest++ != '"') | |
2352 | error (_("No format string following the location")); | |
2353 | ||
2354 | format_start = cmdrest; | |
2355 | ||
8e481c3b | 2356 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2357 | |
2358 | format_end = cmdrest; | |
2359 | ||
2360 | if (*cmdrest++ != '"') | |
2361 | error (_("Bad format string, non-terminated '\"'.")); | |
2362 | ||
f1735a53 | 2363 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2364 | |
2365 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2366 | error (_("Invalid argument syntax")); | |
2367 | ||
2368 | if (*cmdrest == ',') | |
2369 | cmdrest++; | |
f1735a53 | 2370 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2371 | |
2372 | /* For each argument, make an expression. */ | |
2373 | ||
8e481c3b | 2374 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2375 | while (*cmdrest != '\0') |
2376 | { | |
bbc13ae3 | 2377 | const char *cmd1; |
d3ce09f5 SS |
2378 | |
2379 | cmd1 = cmdrest; | |
4d01a485 | 2380 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2381 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2382 | cmdrest = cmd1; |
2383 | if (*cmdrest == ',') | |
2384 | ++cmdrest; | |
2385 | } | |
2386 | ||
833177a4 PA |
2387 | agent_expr_up aexpr; |
2388 | ||
d3ce09f5 SS |
2389 | /* We don't want to stop processing, so catch any errors |
2390 | that may show up. */ | |
a70b8144 | 2391 | try |
d3ce09f5 | 2392 | { |
036e657b JB |
2393 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2394 | format_start, format_end - format_start, | |
8e481c3b | 2395 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2396 | } |
230d2906 | 2397 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2398 | { |
2399 | /* If we got here, it means the command could not be parsed to a valid | |
2400 | bytecode expression and thus can't be evaluated on the target's side. | |
2401 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2402 | } |
492d29ea | 2403 | |
d3ce09f5 SS |
2404 | /* We have a valid agent expression, return it. */ |
2405 | return aexpr; | |
2406 | } | |
2407 | ||
2408 | /* Based on location BL, create a list of breakpoint commands to be | |
2409 | passed on to the target. If we have duplicated locations with | |
2410 | different commands, we will add any such to the list. */ | |
2411 | ||
2412 | static void | |
2413 | build_target_command_list (struct bp_location *bl) | |
2414 | { | |
d3ce09f5 SS |
2415 | int null_command_or_parse_error = 0; |
2416 | int modified = bl->needs_update; | |
d3ce09f5 | 2417 | |
3cde5c42 PA |
2418 | /* Clear commands left over from a previous insert. */ |
2419 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2420 | |
41fac0cf | 2421 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2422 | return; |
2423 | ||
41fac0cf PA |
2424 | /* For now, limit to agent-style dprintf breakpoints. */ |
2425 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2426 | return; |
2427 | ||
e0d9a270 SM |
2428 | auto loc_range = all_bp_locations_at_addr (bl->address); |
2429 | ||
7f32a4d5 PA |
2430 | /* For now, if we have any location at the same address that isn't a |
2431 | dprintf, don't install the target-side commands, as that would | |
2432 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf | 2433 | control. */ |
e0d9a270 SM |
2434 | for (bp_location *loc : loc_range) |
2435 | if (is_breakpoint (loc->owner) | |
2436 | && loc->pspace->num == bl->pspace->num | |
2437 | && loc->owner->type != bp_dprintf) | |
2438 | return; | |
41fac0cf | 2439 | |
d3ce09f5 SS |
2440 | /* Do a first pass to check for locations with no assigned |
2441 | conditions or conditions that fail to parse to a valid agent expression | |
2442 | bytecode. If any of these happen, then it's no use to send conditions | |
2443 | to the target since this location will always trigger and generate a | |
2444 | response back to GDB. */ | |
e0d9a270 | 2445 | for (bp_location *loc : loc_range) |
d3ce09f5 | 2446 | { |
d3ce09f5 SS |
2447 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) |
2448 | { | |
2449 | if (modified) | |
2450 | { | |
d3ce09f5 SS |
2451 | /* Re-parse the commands since something changed. In that |
2452 | case we already freed the command bytecodes (see | |
2453 | force_breakpoint_reinsertion). We just | |
2454 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2455 | loc->cmd_bytecode |
2456 | = parse_cmd_to_aexpr (bl->address, | |
2457 | loc->owner->extra_string); | |
d3ce09f5 SS |
2458 | } |
2459 | ||
2460 | /* If we have a NULL bytecode expression, it means something | |
2461 | went wrong or we have a null command expression. */ | |
2462 | if (!loc->cmd_bytecode) | |
2463 | { | |
2464 | null_command_or_parse_error = 1; | |
2465 | break; | |
2466 | } | |
2467 | } | |
2468 | } | |
2469 | ||
2470 | /* If anything failed, then we're not doing target-side commands, | |
2471 | and so clean up. */ | |
2472 | if (null_command_or_parse_error) | |
2473 | { | |
e0d9a270 SM |
2474 | for (bp_location *loc : loc_range) |
2475 | if (is_breakpoint (loc->owner) | |
2476 | && loc->pspace->num == bl->pspace->num) | |
2477 | { | |
2478 | /* Only go as far as the first NULL bytecode is | |
2479 | located. */ | |
2480 | if (loc->cmd_bytecode == NULL) | |
2481 | return; | |
d3ce09f5 | 2482 | |
e0d9a270 SM |
2483 | loc->cmd_bytecode.reset (); |
2484 | } | |
d3ce09f5 SS |
2485 | } |
2486 | ||
7f32a4d5 PA |
2487 | /* No NULL commands or failed bytecode generation. Build a command |
2488 | list for all duplicate locations at this location's address. | |
2489 | Note that here we must care for whether the breakpoint location | |
2490 | types are considered duplicates, otherwise, say, if we have a | |
2491 | software and hardware location at the same address, the target | |
2492 | could end up running the commands twice. For the moment, we only | |
2493 | support targets-side commands with dprintf, but it doesn't hurt | |
2494 | to be pedantically correct in case that changes. */ | |
e0d9a270 SM |
2495 | for (bp_location *loc : loc_range) |
2496 | if (breakpoint_locations_match (bl, loc) | |
2497 | && loc->owner->extra_string | |
2498 | && is_breakpoint (loc->owner) | |
2499 | && loc->pspace->num == bl->pspace->num | |
2500 | && loc->owner->enable_state == bp_enabled | |
2501 | && loc->enabled | |
2502 | && !loc->disabled_by_cond) | |
2503 | { | |
2504 | /* Add the command to the vector. This will be used later | |
2505 | to send the commands to the target. */ | |
2506 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2507 | } | |
d3ce09f5 SS |
2508 | |
2509 | bl->target_info.persist = 0; | |
2510 | /* Maybe flag this location as persistent. */ | |
2511 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2512 | bl->target_info.persist = 1; | |
2513 | } | |
2514 | ||
833b7ab5 YQ |
2515 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2516 | of breakpoint according to ADDR except single-step breakpoint. | |
2517 | Get the kind of single-step breakpoint according to the current | |
2518 | registers state. */ | |
cd6c3b4f YQ |
2519 | |
2520 | static int | |
2521 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2522 | { | |
833b7ab5 YQ |
2523 | if (bl->owner->type == bp_single_step) |
2524 | { | |
2525 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2526 | struct regcache *regcache; | |
2527 | ||
00431a78 | 2528 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2529 | |
2530 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2531 | regcache, addr); | |
2532 | } | |
2533 | else | |
2534 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2535 | } |
2536 | ||
35df4500 TJB |
2537 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2538 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2539 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2540 | Returns 0 for success, 1 if the bp_location type is not supported or |
2541 | -1 for failure. | |
879bfdc2 | 2542 | |
4a64f543 MS |
2543 | NOTE drow/2003-09-09: This routine could be broken down to an |
2544 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2545 | static int |
35df4500 | 2546 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2547 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2548 | int *disabled_breaks, |
dd61ec5c MW |
2549 | int *hw_breakpoint_error, |
2550 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2551 | { |
cc06b668 | 2552 | gdb_exception bp_excpt; |
879bfdc2 | 2553 | |
b775012e | 2554 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2555 | return 0; |
2556 | ||
35c63cd8 JB |
2557 | /* Note we don't initialize bl->target_info, as that wipes out |
2558 | the breakpoint location's shadow_contents if the breakpoint | |
2559 | is still inserted at that location. This in turn breaks | |
2560 | target_read_memory which depends on these buffers when | |
2561 | a memory read is requested at the breakpoint location: | |
2562 | Once the target_info has been wiped, we fail to see that | |
2563 | we have a breakpoint inserted at that address and thus | |
2564 | read the breakpoint instead of returning the data saved in | |
2565 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2566 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2567 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2568 | bl->target_info.length = bl->length; |
8181d85f | 2569 | |
b775012e LM |
2570 | /* When working with target-side conditions, we must pass all the conditions |
2571 | for the same breakpoint address down to the target since GDB will not | |
2572 | insert those locations. With a list of breakpoint conditions, the target | |
2573 | can decide when to stop and notify GDB. */ | |
2574 | ||
2575 | if (is_breakpoint (bl->owner)) | |
2576 | { | |
2577 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2578 | build_target_command_list (bl); |
2579 | /* Reset the modification marker. */ | |
b775012e LM |
2580 | bl->needs_update = 0; |
2581 | } | |
2582 | ||
7f32a4d5 PA |
2583 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2584 | set at a read-only address, then a breakpoint location will have | |
2585 | been changed to hardware breakpoint before we get here. If it is | |
2586 | "off" however, error out before actually trying to insert the | |
2587 | breakpoint, with a nicer error message. */ | |
35df4500 | 2588 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2589 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2590 | { |
7f32a4d5 | 2591 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2592 | |
7f32a4d5 PA |
2593 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2594 | { | |
2595 | fprintf_unfiltered (tmp_error_stream, | |
2596 | _("Cannot insert breakpoint %d.\n" | |
2597 | "Cannot set software breakpoint " | |
2598 | "at read-only address %s\n"), | |
2599 | bl->owner->number, | |
2600 | paddress (bl->gdbarch, bl->address)); | |
2601 | return 1; | |
765dc015 | 2602 | } |
7f32a4d5 PA |
2603 | } |
2604 | ||
2605 | if (bl->loc_type == bp_loc_software_breakpoint | |
2606 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2607 | { | |
879bfdc2 DJ |
2608 | /* First check to see if we have to handle an overlay. */ |
2609 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2610 | || bl->section == NULL |
2611 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2612 | { |
2613 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2614 | try |
dd61ec5c | 2615 | { |
0000e5cc PA |
2616 | int val; |
2617 | ||
dd61ec5c | 2618 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2619 | if (val) |
688fca4f | 2620 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2621 | } |
94aeb44b | 2622 | catch (gdb_exception &e) |
dd61ec5c | 2623 | { |
94aeb44b | 2624 | bp_excpt = std::move (e); |
dd61ec5c | 2625 | } |
879bfdc2 DJ |
2626 | } |
2627 | else | |
2628 | { | |
4a64f543 | 2629 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2630 | Shall we set a breakpoint at the LMA? */ |
2631 | if (!overlay_events_enabled) | |
2632 | { | |
2633 | /* Yes -- overlay event support is not active, | |
2634 | so we must try to set a breakpoint at the LMA. | |
2635 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2636 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2637 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2638 | bl->owner->number); |
879bfdc2 DJ |
2639 | else |
2640 | { | |
35df4500 TJB |
2641 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2642 | bl->section); | |
879bfdc2 | 2643 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2644 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2645 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2646 | |
2647 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2648 | try |
0000e5cc PA |
2649 | { |
2650 | int val; | |
2651 | ||
579c6ad9 | 2652 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2653 | = breakpoint_kind (bl, &addr); |
2654 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2655 | val = target_insert_breakpoint (bl->gdbarch, |
2656 | &bl->overlay_target_info); | |
2657 | if (val) | |
688fca4f PA |
2658 | bp_excpt |
2659 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2660 | } |
94aeb44b | 2661 | catch (gdb_exception &e) |
0000e5cc | 2662 | { |
94aeb44b | 2663 | bp_excpt = std::move (e); |
0000e5cc PA |
2664 | } |
2665 | ||
688fca4f | 2666 | if (bp_excpt.reason != 0) |
99361f52 | 2667 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2668 | "Overlay breakpoint %d " |
2669 | "failed: in ROM?\n", | |
35df4500 | 2670 | bl->owner->number); |
879bfdc2 DJ |
2671 | } |
2672 | } | |
2673 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2674 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2675 | { |
2676 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2677 | try |
dda83cd7 | 2678 | { |
0000e5cc PA |
2679 | int val; |
2680 | ||
dda83cd7 | 2681 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2682 | if (val) |
688fca4f | 2683 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2684 | } |
94aeb44b | 2685 | catch (gdb_exception &e) |
dda83cd7 | 2686 | { |
94aeb44b | 2687 | bp_excpt = std::move (e); |
dda83cd7 | 2688 | } |
879bfdc2 DJ |
2689 | } |
2690 | else | |
2691 | { | |
2692 | /* No. This breakpoint will not be inserted. | |
2693 | No error, but do not mark the bp as 'inserted'. */ | |
2694 | return 0; | |
2695 | } | |
2696 | } | |
2697 | ||
688fca4f | 2698 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2699 | { |
2700 | /* Can't set the breakpoint. */ | |
0000e5cc | 2701 | |
80dc83fd AB |
2702 | /* If the target has closed then it will have deleted any |
2703 | breakpoints inserted within the target inferior, as a result | |
2704 | any further attempts to interact with the breakpoint objects | |
2705 | is not possible. Just rethrow the error. */ | |
2706 | if (bp_excpt.error == TARGET_CLOSE_ERROR) | |
2707 | throw bp_excpt; | |
2708 | gdb_assert (bl->owner != nullptr); | |
2709 | ||
0000e5cc PA |
2710 | /* In some cases, we might not be able to insert a |
2711 | breakpoint in a shared library that has already been | |
2712 | removed, but we have not yet processed the shlib unload | |
2713 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2714 | breakpoint insertion themselves can't tell why the |
2715 | breakpoint insertion failed (e.g., the remote target | |
2716 | doesn't define error codes), so we must treat generic | |
2717 | errors as memory errors. */ | |
688fca4f PA |
2718 | if (bp_excpt.reason == RETURN_ERROR |
2719 | && (bp_excpt.error == GENERIC_ERROR | |
2720 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2721 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2722 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2723 | || shared_objfile_contains_address_p (bl->pspace, |
2724 | bl->address))) | |
879bfdc2 | 2725 | { |
4a64f543 | 2726 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2727 | bl->shlib_disabled = 1; |
76727919 | 2728 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2729 | if (!*disabled_breaks) |
2730 | { | |
2731 | fprintf_unfiltered (tmp_error_stream, | |
2732 | "Cannot insert breakpoint %d.\n", | |
2733 | bl->owner->number); | |
2734 | fprintf_unfiltered (tmp_error_stream, | |
2735 | "Temporarily disabling shared " | |
2736 | "library breakpoints:\n"); | |
2737 | } | |
2738 | *disabled_breaks = 1; | |
879bfdc2 | 2739 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2740 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2741 | return 0; |
879bfdc2 DJ |
2742 | } |
2743 | else | |
879bfdc2 | 2744 | { |
35df4500 | 2745 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2746 | { |
0000e5cc | 2747 | *hw_breakpoint_error = 1; |
688fca4f | 2748 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dda83cd7 SM |
2749 | fprintf_unfiltered (tmp_error_stream, |
2750 | "Cannot insert hardware breakpoint %d%s", | |
2751 | bl->owner->number, | |
688fca4f | 2752 | bp_excpt.message ? ":" : ".\n"); |
dda83cd7 SM |
2753 | if (bp_excpt.message != NULL) |
2754 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2755 | bp_excpt.what ()); |
879bfdc2 DJ |
2756 | } |
2757 | else | |
2758 | { | |
688fca4f | 2759 | if (bp_excpt.message == NULL) |
0000e5cc | 2760 | { |
1ccbe998 | 2761 | std::string message |
0000e5cc PA |
2762 | = memory_error_message (TARGET_XFER_E_IO, |
2763 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2764 | |
2765 | fprintf_unfiltered (tmp_error_stream, | |
2766 | "Cannot insert breakpoint %d.\n" | |
2767 | "%s\n", | |
1ccbe998 | 2768 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2769 | } |
2770 | else | |
2771 | { | |
2772 | fprintf_unfiltered (tmp_error_stream, | |
2773 | "Cannot insert breakpoint %d: %s\n", | |
2774 | bl->owner->number, | |
3d6e9d23 | 2775 | bp_excpt.what ()); |
0000e5cc | 2776 | } |
879bfdc2 | 2777 | } |
0000e5cc | 2778 | return 1; |
879bfdc2 DJ |
2779 | |
2780 | } | |
2781 | } | |
2782 | else | |
35df4500 | 2783 | bl->inserted = 1; |
879bfdc2 | 2784 | |
0000e5cc | 2785 | return 0; |
879bfdc2 DJ |
2786 | } |
2787 | ||
35df4500 | 2788 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2789 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2790 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2791 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2792 | { |
0000e5cc PA |
2793 | int val; |
2794 | ||
77b06cd7 TJB |
2795 | gdb_assert (bl->owner->ops != NULL |
2796 | && bl->owner->ops->insert_location != NULL); | |
2797 | ||
2798 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2799 | |
2800 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2801 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2802 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 | 2803 | { |
85d721b8 PA |
2804 | /* But don't try to insert it, if there's already another |
2805 | hw_access location that would be considered a duplicate | |
2806 | of this one. */ | |
48d7020b | 2807 | for (bp_location *loc : all_bp_locations ()) |
35df4500 | 2808 | if (loc != bl |
85d721b8 | 2809 | && loc->watchpoint_type == hw_access |
35df4500 | 2810 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2811 | { |
35df4500 TJB |
2812 | bl->duplicate = 1; |
2813 | bl->inserted = 1; | |
2814 | bl->target_info = loc->target_info; | |
2815 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2816 | val = 0; |
2817 | break; | |
2818 | } | |
2819 | ||
2820 | if (val == 1) | |
2821 | { | |
77b06cd7 TJB |
2822 | bl->watchpoint_type = hw_access; |
2823 | val = bl->owner->ops->insert_location (bl); | |
2824 | ||
2825 | if (val) | |
2826 | /* Back to the original value. */ | |
2827 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2828 | } |
2829 | } | |
2830 | ||
35df4500 | 2831 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2832 | } |
2833 | ||
35df4500 | 2834 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2835 | { |
0000e5cc PA |
2836 | int val; |
2837 | ||
77b06cd7 TJB |
2838 | gdb_assert (bl->owner->ops != NULL |
2839 | && bl->owner->ops->insert_location != NULL); | |
2840 | ||
2841 | val = bl->owner->ops->insert_location (bl); | |
2842 | if (val) | |
2843 | { | |
2844 | bl->owner->enable_state = bp_disabled; | |
2845 | ||
2846 | if (val == 1) | |
2847 | warning (_("\ | |
2848 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2849 | of catchpoint."), bl->owner->number); | |
2850 | else | |
2851 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2852 | } | |
2853 | ||
2854 | bl->inserted = (val == 0); | |
1640b821 DJ |
2855 | |
2856 | /* We've already printed an error message if there was a problem | |
2857 | inserting this catchpoint, and we've disabled the catchpoint, | |
2858 | so just return success. */ | |
2859 | return 0; | |
879bfdc2 DJ |
2860 | } |
2861 | ||
2862 | return 0; | |
2863 | } | |
2864 | ||
6c95b8df PA |
2865 | /* This function is called when program space PSPACE is about to be |
2866 | deleted. It takes care of updating breakpoints to not reference | |
2867 | PSPACE anymore. */ | |
2868 | ||
2869 | void | |
2870 | breakpoint_program_space_exit (struct program_space *pspace) | |
2871 | { | |
6c95b8df | 2872 | /* Remove any breakpoint that was set through this program space. */ |
1428b37a SM |
2873 | for (breakpoint *b : all_breakpoints_safe ()) |
2874 | if (b->pspace == pspace) | |
2875 | delete_breakpoint (b); | |
6c95b8df PA |
2876 | |
2877 | /* Breakpoints set through other program spaces could have locations | |
2878 | bound to PSPACE as well. Remove those. */ | |
48d7020b | 2879 | for (bp_location *loc : all_bp_locations ()) |
6c95b8df PA |
2880 | { |
2881 | struct bp_location *tmp; | |
2882 | ||
2883 | if (loc->pspace == pspace) | |
2884 | { | |
2bdf28a0 | 2885 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2886 | if (loc->owner->loc == loc) |
2887 | loc->owner->loc = loc->next; | |
2888 | else | |
2889 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2890 | if (tmp->next == loc) | |
2891 | { | |
2892 | tmp->next = loc->next; | |
2893 | break; | |
2894 | } | |
2895 | } | |
2896 | } | |
2897 | ||
2898 | /* Now update the global location list to permanently delete the | |
2899 | removed locations above. */ | |
44702360 | 2900 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2901 | } |
2902 | ||
74960c60 VP |
2903 | /* Make sure all breakpoints are inserted in inferior. |
2904 | Throws exception on any error. | |
2905 | A breakpoint that is already inserted won't be inserted | |
2906 | again, so calling this function twice is safe. */ | |
2907 | void | |
2908 | insert_breakpoints (void) | |
2909 | { | |
43892fdf | 2910 | for (breakpoint *bpt : all_breakpoints ()) |
74960c60 | 2911 | if (is_hardware_watchpoint (bpt)) |
3a5c3e22 PA |
2912 | { |
2913 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2914 | ||
2915 | update_watchpoint (w, 0 /* don't reparse. */); | |
2916 | } | |
74960c60 | 2917 | |
04086b45 PA |
2918 | /* Updating watchpoints creates new locations, so update the global |
2919 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
2920 | ignore breakpoints_always_inserted_mode. Also, |
2921 | update_global_location_list tries to "upgrade" software | |
2922 | breakpoints to hardware breakpoints to handle "set breakpoint | |
2923 | auto-hw", so we need to call it even if we don't have new | |
2924 | locations. */ | |
04086b45 | 2925 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
2926 | } |
2927 | ||
b775012e LM |
2928 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2929 | target. It is the case with deleting and disabling of breakpoints when using | |
2930 | always-inserted mode. */ | |
2931 | ||
2932 | static void | |
2933 | update_inserted_breakpoint_locations (void) | |
2934 | { | |
b775012e LM |
2935 | int error_flag = 0; |
2936 | int val = 0; | |
2937 | int disabled_breaks = 0; | |
2938 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2939 | int hw_bp_details_reported = 0; |
b775012e | 2940 | |
d7e74731 | 2941 | string_file tmp_error_stream; |
b775012e LM |
2942 | |
2943 | /* Explicitly mark the warning -- this will only be printed if | |
2944 | there was an error. */ | |
d7e74731 | 2945 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2946 | |
5ed8105e | 2947 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e | 2948 | |
48d7020b | 2949 | for (bp_location *bl : all_bp_locations ()) |
b775012e LM |
2950 | { |
2951 | /* We only want to update software breakpoints and hardware | |
2952 | breakpoints. */ | |
2953 | if (!is_breakpoint (bl->owner)) | |
2954 | continue; | |
2955 | ||
2956 | /* We only want to update locations that are already inserted | |
2957 | and need updating. This is to avoid unwanted insertion during | |
2958 | deletion of breakpoints. */ | |
4daf1902 | 2959 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2960 | continue; |
2961 | ||
2962 | switch_to_program_space_and_thread (bl->pspace); | |
2963 | ||
2964 | /* For targets that support global breakpoints, there's no need | |
2965 | to select an inferior to insert breakpoint to. In fact, even | |
2966 | if we aren't attached to any process yet, we should still | |
2967 | insert breakpoints. */ | |
f5656ead | 2968 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 2969 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
2970 | continue; |
2971 | ||
d7e74731 | 2972 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2973 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2974 | if (val) |
2975 | error_flag = val; | |
2976 | } | |
2977 | ||
2978 | if (error_flag) | |
2979 | { | |
223ffa71 | 2980 | target_terminal::ours_for_output (); |
b775012e LM |
2981 | error_stream (tmp_error_stream); |
2982 | } | |
b775012e LM |
2983 | } |
2984 | ||
c30eee59 | 2985 | /* Used when starting or continuing the program. */ |
c906108c | 2986 | |
74960c60 VP |
2987 | static void |
2988 | insert_breakpoint_locations (void) | |
c906108c | 2989 | { |
eacd795a | 2990 | int error_flag = 0; |
c906108c | 2991 | int val = 0; |
3fbb6ffa | 2992 | int disabled_breaks = 0; |
81d0cc19 | 2993 | int hw_breakpoint_error = 0; |
dd61ec5c | 2994 | int hw_bp_error_explained_already = 0; |
c906108c | 2995 | |
d7e74731 PA |
2996 | string_file tmp_error_stream; |
2997 | ||
81d0cc19 GS |
2998 | /* Explicitly mark the warning -- this will only be printed if |
2999 | there was an error. */ | |
d7e74731 | 3000 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3001 | |
5ed8105e | 3002 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3003 | |
48d7020b | 3004 | for (bp_location *bl : all_bp_locations ()) |
879bfdc2 | 3005 | { |
b775012e | 3006 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3007 | continue; |
3008 | ||
4a64f543 MS |
3009 | /* There is no point inserting thread-specific breakpoints if |
3010 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3011 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3012 | if (bl->owner->thread != -1 |
5d5658a1 | 3013 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3014 | continue; |
3015 | ||
35df4500 | 3016 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3017 | |
3018 | /* For targets that support global breakpoints, there's no need | |
3019 | to select an inferior to insert breakpoint to. In fact, even | |
3020 | if we aren't attached to any process yet, we should still | |
3021 | insert breakpoints. */ | |
f5656ead | 3022 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3023 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3024 | continue; |
3025 | ||
d7e74731 | 3026 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3027 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3028 | if (val) |
eacd795a | 3029 | error_flag = val; |
879bfdc2 | 3030 | } |
c906108c | 3031 | |
4a64f543 MS |
3032 | /* If we failed to insert all locations of a watchpoint, remove |
3033 | them, as half-inserted watchpoint is of limited use. */ | |
43892fdf | 3034 | for (breakpoint *bpt : all_breakpoints ()) |
a5606eee VP |
3035 | { |
3036 | int some_failed = 0; | |
a5606eee VP |
3037 | |
3038 | if (!is_hardware_watchpoint (bpt)) | |
3039 | continue; | |
3040 | ||
d6b74ac4 | 3041 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3042 | continue; |
74960c60 VP |
3043 | |
3044 | if (bpt->disposition == disp_del_at_next_stop) | |
3045 | continue; | |
a5606eee | 3046 | |
40cb8ca5 | 3047 | for (bp_location *loc : bpt->locations ()) |
56710373 | 3048 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3049 | { |
3050 | some_failed = 1; | |
3051 | break; | |
3052 | } | |
40cb8ca5 | 3053 | |
a5606eee VP |
3054 | if (some_failed) |
3055 | { | |
40cb8ca5 | 3056 | for (bp_location *loc : bpt->locations ()) |
a5606eee | 3057 | if (loc->inserted) |
834c0d03 | 3058 | remove_breakpoint (loc); |
a5606eee VP |
3059 | |
3060 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3061 | tmp_error_stream.printf ("Could not insert " |
3062 | "hardware watchpoint %d.\n", | |
3063 | bpt->number); | |
eacd795a | 3064 | error_flag = -1; |
a5606eee VP |
3065 | } |
3066 | } | |
3067 | ||
eacd795a | 3068 | if (error_flag) |
81d0cc19 GS |
3069 | { |
3070 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3071 | message about possibly exhausted resources. */ |
dd61ec5c | 3072 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3073 | { |
d7e74731 | 3074 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3075 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3076 | } |
223ffa71 | 3077 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3078 | error_stream (tmp_error_stream); |
3079 | } | |
c906108c SS |
3080 | } |
3081 | ||
c30eee59 TJB |
3082 | /* Used when the program stops. |
3083 | Returns zero if successful, or non-zero if there was a problem | |
3084 | removing a breakpoint location. */ | |
3085 | ||
c906108c | 3086 | int |
fba45db2 | 3087 | remove_breakpoints (void) |
c906108c | 3088 | { |
3a1bae8e | 3089 | int val = 0; |
c906108c | 3090 | |
48d7020b | 3091 | for (bp_location *bl : all_bp_locations ()) |
1e4d1764 | 3092 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3093 | val |= remove_breakpoint (bl); |
01add95b | 3094 | |
3a1bae8e | 3095 | return val; |
c906108c SS |
3096 | } |
3097 | ||
49fa26b0 PA |
3098 | /* When a thread exits, remove breakpoints that are related to |
3099 | that thread. */ | |
3100 | ||
3101 | static void | |
3102 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3103 | { | |
1428b37a | 3104 | for (breakpoint *b : all_breakpoints_safe ()) |
49fa26b0 | 3105 | { |
5d5658a1 | 3106 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3107 | { |
3108 | b->disposition = disp_del_at_next_stop; | |
3109 | ||
3110 | printf_filtered (_("\ | |
43792cf0 PA |
3111 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3112 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3113 | |
3114 | /* Hide it from the user. */ | |
3115 | b->number = 0; | |
3116 | } | |
3117 | } | |
3118 | } | |
3119 | ||
f3869b1a | 3120 | /* See breakpoint.h. */ |
6c95b8df | 3121 | |
f3869b1a | 3122 | void |
00431a78 | 3123 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3124 | { |
6c95b8df | 3125 | int val; |
6c95b8df | 3126 | |
48d7020b | 3127 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3128 | { |
3129 | if (bl->pspace != inf->pspace) | |
3130 | continue; | |
6c95b8df | 3131 | |
01add95b SM |
3132 | if (bl->inserted && !bl->target_info.persist) |
3133 | { | |
3134 | val = remove_breakpoint (bl); | |
3135 | if (val != 0) | |
3136 | return; | |
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, |
dda83cd7 | 3275 | bp_overlay_event, |
06edf0c0 | 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 | 3281 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3282 | { |
3283 | b->enable_state = bp_enabled; | |
3284 | overlay_events_enabled = 1; | |
3285 | } | |
69de3c6a PP |
3286 | else |
3287 | { | |
dda83cd7 SM |
3288 | b->enable_state = bp_disabled; |
3289 | overlay_events_enabled = 0; | |
69de3c6a | 3290 | } |
e62c965a | 3291 | } |
e62c965a PP |
3292 | } |
3293 | ||
2a7f6487 TV |
3294 | /* Install a master longjmp breakpoint for OBJFILE using a probe. Return |
3295 | true if a breakpoint was installed. */ | |
3296 | ||
3297 | static bool | |
3298 | create_longjmp_master_breakpoint_probe (objfile *objfile) | |
0fd8e87f | 3299 | { |
2a7f6487 TV |
3300 | struct gdbarch *gdbarch = objfile->arch (); |
3301 | struct breakpoint_objfile_data *bp_objfile_data | |
3302 | = get_breakpoint_objfile_data (objfile); | |
0fd8e87f | 3303 | |
2a7f6487 | 3304 | if (!bp_objfile_data->longjmp_searched) |
94c93c35 | 3305 | { |
2a7f6487 TV |
3306 | std::vector<probe *> ret |
3307 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
af02033e | 3308 | |
2a7f6487 | 3309 | if (!ret.empty ()) |
94c93c35 | 3310 | { |
2a7f6487 TV |
3311 | /* We are only interested in checking one element. */ |
3312 | probe *p = ret[0]; | |
0fd8e87f | 3313 | |
2a7f6487 TV |
3314 | if (!p->can_evaluate_arguments ()) |
3315 | { | |
3316 | /* We cannot use the probe interface here, | |
3317 | because it does not know how to evaluate | |
3318 | arguments. */ | |
3319 | ret.clear (); | |
3320 | } | |
3321 | } | |
3322 | bp_objfile_data->longjmp_probes = ret; | |
3323 | bp_objfile_data->longjmp_searched = 1; | |
3324 | } | |
0fd8e87f | 3325 | |
2a7f6487 TV |
3326 | if (bp_objfile_data->longjmp_probes.empty ()) |
3327 | return false; | |
17450429 | 3328 | |
2a7f6487 TV |
3329 | for (probe *p : bp_objfile_data->longjmp_probes) |
3330 | { | |
3331 | struct breakpoint *b; | |
25f9533e | 3332 | |
2a7f6487 TV |
3333 | b = create_internal_breakpoint (gdbarch, |
3334 | p->get_relocated_address (objfile), | |
3335 | bp_longjmp_master, | |
3336 | &internal_breakpoint_ops); | |
3337 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3338 | b->enable_state = bp_disabled; | |
3339 | } | |
aed57c53 | 3340 | |
2a7f6487 TV |
3341 | return true; |
3342 | } | |
25f9533e | 3343 | |
2a7f6487 TV |
3344 | /* Install master longjmp breakpoints for OBJFILE using longjmp_names. |
3345 | Return true if at least one breakpoint was installed. */ | |
3346 | ||
3347 | static bool | |
3348 | create_longjmp_master_breakpoint_names (objfile *objfile) | |
3349 | { | |
3350 | struct gdbarch *gdbarch = objfile->arch (); | |
3351 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
3352 | return false; | |
3353 | ||
3354 | struct breakpoint_objfile_data *bp_objfile_data | |
3355 | = get_breakpoint_objfile_data (objfile); | |
3356 | unsigned int installed_bp = 0; | |
3357 | ||
3358 | for (int i = 0; i < NUM_LONGJMP_NAMES; i++) | |
3359 | { | |
3360 | struct breakpoint *b; | |
3361 | const char *func_name; | |
3362 | CORE_ADDR addr; | |
3363 | struct explicit_location explicit_loc; | |
3364 | ||
3365 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) | |
3366 | continue; | |
28106bc2 | 3367 | |
2a7f6487 TV |
3368 | func_name = longjmp_names[i]; |
3369 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3370 | { | |
3371 | struct bound_minimal_symbol m; | |
3372 | ||
3373 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3374 | if (m.minsym == NULL) | |
3375 | { | |
3376 | /* Prevent future lookups in this objfile. */ | |
3377 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
94c93c35 TT |
3378 | continue; |
3379 | } | |
2a7f6487 TV |
3380 | bp_objfile_data->longjmp_msym[i] = m; |
3381 | } | |
28106bc2 | 3382 | |
2a7f6487 TV |
3383 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3384 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3385 | &internal_breakpoint_ops); | |
3386 | initialize_explicit_location (&explicit_loc); | |
3387 | explicit_loc.function_name = ASTRDUP (func_name); | |
3388 | b->location = new_explicit_location (&explicit_loc); | |
3389 | b->enable_state = bp_disabled; | |
3390 | installed_bp++; | |
3391 | } | |
28106bc2 | 3392 | |
2a7f6487 TV |
3393 | return installed_bp > 0; |
3394 | } | |
0fd8e87f | 3395 | |
2a7f6487 | 3396 | /* Create a master longjmp breakpoint. */ |
17450429 | 3397 | |
2a7f6487 TV |
3398 | static void |
3399 | create_longjmp_master_breakpoint (void) | |
3400 | { | |
3401 | scoped_restore_current_program_space restore_pspace; | |
aed57c53 | 3402 | |
2a7f6487 TV |
3403 | for (struct program_space *pspace : program_spaces) |
3404 | { | |
3405 | set_current_program_space (pspace); | |
17450429 | 3406 | |
2a7f6487 TV |
3407 | for (objfile *obj : current_program_space->objfiles ()) |
3408 | { | |
3409 | /* Skip separate debug object, it's handled in the loop below. */ | |
3410 | if (obj->separate_debug_objfile_backlink != nullptr) | |
3411 | continue; | |
3412 | ||
3413 | /* Try a probe kind breakpoint on main objfile. */ | |
3414 | if (create_longjmp_master_breakpoint_probe (obj)) | |
3415 | continue; | |
3416 | ||
3417 | /* Try longjmp_names kind breakpoints on main and separate_debug | |
3418 | objfiles. */ | |
3419 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3420 | if (create_longjmp_master_breakpoint_names (debug_objfile)) | |
3421 | break; | |
94c93c35 TT |
3422 | } |
3423 | } | |
0fd8e87f UW |
3424 | } |
3425 | ||
af02033e | 3426 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3427 | static void |
af02033e | 3428 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3429 | { |
af02033e | 3430 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3431 | |
5ed8105e | 3432 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3433 | |
94c93c35 TT |
3434 | for (struct program_space *pspace : program_spaces) |
3435 | { | |
3436 | CORE_ADDR addr; | |
17450429 | 3437 | |
94c93c35 | 3438 | set_current_program_space (pspace); |
17450429 | 3439 | |
94c93c35 TT |
3440 | for (objfile *objfile : current_program_space->objfiles ()) |
3441 | { | |
3442 | struct breakpoint *b; | |
3443 | struct breakpoint_objfile_data *bp_objfile_data; | |
3444 | struct explicit_location explicit_loc; | |
aa7d318d | 3445 | |
94c93c35 | 3446 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3447 | |
94c93c35 TT |
3448 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3449 | continue; | |
17450429 | 3450 | |
94c93c35 TT |
3451 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3452 | { | |
3453 | struct bound_minimal_symbol m; | |
17450429 | 3454 | |
94c93c35 TT |
3455 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3456 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3457 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3458 | { | |
3459 | /* Prevent future lookups in this objfile. */ | |
3460 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3461 | continue; | |
3462 | } | |
3463 | bp_objfile_data->terminate_msym = m; | |
3464 | } | |
aa7d318d | 3465 | |
94c93c35 TT |
3466 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3467 | b = create_internal_breakpoint (objfile->arch (), addr, | |
3468 | bp_std_terminate_master, | |
3469 | &internal_breakpoint_ops); | |
3470 | initialize_explicit_location (&explicit_loc); | |
3471 | explicit_loc.function_name = ASTRDUP (func_name); | |
3472 | b->location = new_explicit_location (&explicit_loc); | |
3473 | b->enable_state = bp_disabled; | |
3474 | } | |
3475 | } | |
aa7d318d TT |
3476 | } |
3477 | ||
1940319c TV |
3478 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using a |
3479 | probe. Return true if a breakpoint was installed. */ | |
186c406b | 3480 | |
1940319c TV |
3481 | static bool |
3482 | create_exception_master_breakpoint_probe (objfile *objfile) | |
186c406b | 3483 | { |
1940319c TV |
3484 | struct breakpoint *b; |
3485 | struct gdbarch *gdbarch; | |
3486 | struct breakpoint_objfile_data *bp_objfile_data; | |
186c406b | 3487 | |
1940319c | 3488 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3489 | |
1940319c TV |
3490 | /* We prefer the SystemTap probe point if it exists. */ |
3491 | if (!bp_objfile_data->exception_searched) | |
3492 | { | |
3493 | std::vector<probe *> ret | |
3494 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
17450429 | 3495 | |
1940319c | 3496 | if (!ret.empty ()) |
28106bc2 | 3497 | { |
1940319c TV |
3498 | /* We are only interested in checking one element. */ |
3499 | probe *p = ret[0]; | |
25f9533e | 3500 | |
1940319c | 3501 | if (!p->can_evaluate_arguments ()) |
25f9533e | 3502 | { |
1940319c TV |
3503 | /* We cannot use the probe interface here, because it does |
3504 | not know how to evaluate arguments. */ | |
3505 | ret.clear (); | |
25f9533e | 3506 | } |
28106bc2 | 3507 | } |
1940319c TV |
3508 | bp_objfile_data->exception_probes = ret; |
3509 | bp_objfile_data->exception_searched = 1; | |
3510 | } | |
28106bc2 | 3511 | |
1940319c TV |
3512 | if (bp_objfile_data->exception_probes.empty ()) |
3513 | return false; | |
45461e0d | 3514 | |
1940319c | 3515 | gdbarch = objfile->arch (); |
28106bc2 | 3516 | |
1940319c TV |
3517 | for (probe *p : bp_objfile_data->exception_probes) |
3518 | { | |
3519 | b = create_internal_breakpoint (gdbarch, | |
3520 | p->get_relocated_address (objfile), | |
3521 | bp_exception_master, | |
3522 | &internal_breakpoint_ops); | |
3523 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); | |
3524 | b->enable_state = bp_disabled; | |
3525 | } | |
28106bc2 | 3526 | |
1940319c TV |
3527 | return true; |
3528 | } | |
28106bc2 | 3529 | |
1940319c TV |
3530 | /* Install a master breakpoint on the unwinder's debug hook for OBJFILE using |
3531 | _Unwind_DebugHook. Return true if a breakpoint was installed. */ | |
17450429 | 3532 | |
1940319c TV |
3533 | static bool |
3534 | create_exception_master_breakpoint_hook (objfile *objfile) | |
3535 | { | |
3536 | const char *const func_name = "_Unwind_DebugHook"; | |
3537 | struct breakpoint *b; | |
3538 | struct gdbarch *gdbarch; | |
3539 | struct breakpoint_objfile_data *bp_objfile_data; | |
3540 | CORE_ADDR addr; | |
3541 | struct explicit_location explicit_loc; | |
186c406b | 3542 | |
1940319c | 3543 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
186c406b | 3544 | |
1940319c TV |
3545 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
3546 | return false; | |
17450429 | 3547 | |
1940319c TV |
3548 | gdbarch = objfile->arch (); |
3549 | ||
3550 | if (bp_objfile_data->exception_msym.minsym == NULL) | |
3551 | { | |
3552 | struct bound_minimal_symbol debug_hook; | |
3553 | ||
3554 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); | |
3555 | if (debug_hook.minsym == NULL) | |
3556 | { | |
3557 | bp_objfile_data->exception_msym.minsym = &msym_not_found; | |
3558 | return false; | |
186c406b | 3559 | } |
17450429 | 3560 | |
1940319c TV |
3561 | bp_objfile_data->exception_msym = debug_hook; |
3562 | } | |
3563 | ||
3564 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
328d42d8 SM |
3565 | addr = gdbarch_convert_from_func_ptr_addr |
3566 | (gdbarch, addr, current_inferior ()->top_target ()); | |
1940319c TV |
3567 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3568 | &internal_breakpoint_ops); | |
3569 | initialize_explicit_location (&explicit_loc); | |
3570 | explicit_loc.function_name = ASTRDUP (func_name); | |
3571 | b->location = new_explicit_location (&explicit_loc); | |
3572 | b->enable_state = bp_disabled; | |
3573 | ||
3574 | return true; | |
3575 | } | |
3576 | ||
3577 | /* Install a master breakpoint on the unwinder's debug hook. */ | |
3578 | ||
3579 | static void | |
3580 | create_exception_master_breakpoint (void) | |
3581 | { | |
3582 | for (objfile *obj : current_program_space->objfiles ()) | |
3583 | { | |
3584 | /* Skip separate debug object. */ | |
3585 | if (obj->separate_debug_objfile_backlink) | |
3586 | continue; | |
3587 | ||
3588 | /* Try a probe kind breakpoint. */ | |
3589 | if (create_exception_master_breakpoint_probe (obj)) | |
3590 | continue; | |
3591 | ||
7c6944ab TV |
3592 | /* Iterate over main and separate debug objects and try an |
3593 | _Unwind_DebugHook kind breakpoint. */ | |
3594 | for (objfile *debug_objfile : obj->separate_debug_objfiles ()) | |
3595 | if (create_exception_master_breakpoint_hook (debug_objfile)) | |
1940319c | 3596 | break; |
186c406b | 3597 | } |
186c406b TT |
3598 | } |
3599 | ||
9ef9e6a6 KS |
3600 | /* Does B have a location spec? */ |
3601 | ||
3602 | static int | |
3603 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3604 | { | |
d28cd78a | 3605 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3606 | } |
3607 | ||
c906108c | 3608 | void |
fba45db2 | 3609 | update_breakpoints_after_exec (void) |
c906108c | 3610 | { |
25b22b0a PA |
3611 | /* We're about to delete breakpoints from GDB's lists. If the |
3612 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3613 | writing the breakpoints' "shadow contents" back into memory. The | |
3614 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3615 | do that. Instead, the target is responsible from marking | |
3616 | breakpoints out as soon as it detects an exec. We don't do that | |
3617 | here instead, because there may be other attempts to delete | |
3618 | breakpoints after detecting an exec and before reaching here. */ | |
48d7020b | 3619 | for (bp_location *bploc : all_bp_locations ()) |
6c95b8df PA |
3620 | if (bploc->pspace == current_program_space) |
3621 | gdb_assert (!bploc->inserted); | |
c906108c | 3622 | |
1428b37a | 3623 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3624 | { |
3625 | if (b->pspace != current_program_space) | |
c5aa993b | 3626 | continue; |
c906108c | 3627 | |
01add95b SM |
3628 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
3629 | if (b->type == bp_shlib_event) | |
3630 | { | |
3631 | delete_breakpoint (b); | |
3632 | continue; | |
3633 | } | |
4efc6507 | 3634 | |
01add95b SM |
3635 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
3636 | if (b->type == bp_jit_event) | |
3637 | { | |
3638 | delete_breakpoint (b); | |
3639 | continue; | |
3640 | } | |
c4093a6a | 3641 | |
01add95b SM |
3642 | /* Thread event breakpoints must be set anew after an exec(), |
3643 | as must overlay event and longjmp master breakpoints. */ | |
3644 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
3645 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master | |
3646 | || b->type == bp_exception_master) | |
3647 | { | |
3648 | delete_breakpoint (b); | |
3649 | continue; | |
3650 | } | |
c5aa993b | 3651 | |
01add95b SM |
3652 | /* Step-resume breakpoints are meaningless after an exec(). */ |
3653 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) | |
3654 | { | |
3655 | delete_breakpoint (b); | |
3656 | continue; | |
3657 | } | |
7c16b83e | 3658 | |
01add95b SM |
3659 | /* Just like single-step breakpoints. */ |
3660 | if (b->type == bp_single_step) | |
3661 | { | |
3662 | delete_breakpoint (b); | |
3663 | continue; | |
3664 | } | |
611c83ae | 3665 | |
01add95b SM |
3666 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3667 | after an exec. */ | |
3668 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume | |
3669 | || b->type == bp_longjmp_call_dummy | |
3670 | || b->type == bp_exception || b->type == bp_exception_resume) | |
3671 | { | |
3672 | delete_breakpoint (b); | |
3673 | continue; | |
3674 | } | |
ce78b96d | 3675 | |
01add95b SM |
3676 | if (b->type == bp_catchpoint) |
3677 | { | |
3678 | /* For now, none of the bp_catchpoint breakpoints need to | |
3679 | do anything at this point. In the future, if some of | |
3680 | the catchpoints need to something, we will need to add | |
3681 | a new method, and call this method from here. */ | |
3682 | continue; | |
3683 | } | |
c5aa993b | 3684 | |
01add95b SM |
3685 | /* bp_finish is a special case. The only way we ought to be able |
3686 | to see one of these when an exec() has happened, is if the user | |
3687 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3688 | carries them to the call-site of the current callee, by setting | |
3689 | a temporary bp there and resuming. But in this case, the finish | |
3690 | will carry them entirely through the vfork & exec. | |
3691 | ||
3692 | We don't want to allow a bp_finish to remain inserted now. But | |
3693 | we can't safely delete it, 'cause finish_command has a handle to | |
3694 | the bp on a bpstat, and will later want to delete it. There's a | |
3695 | chance (and I've seen it happen) that if we delete the bp_finish | |
3696 | here, that its storage will get reused by the time finish_command | |
3697 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3698 | We really must allow finish_command to delete a bp_finish. | |
3699 | ||
3700 | In the absence of a general solution for the "how do we know | |
3701 | it's safe to delete something others may have handles to?" | |
3702 | problem, what we'll do here is just uninsert the bp_finish, and | |
3703 | let finish_command delete it. | |
3704 | ||
3705 | (We know the bp_finish is "doomed" in the sense that it's | |
3706 | momentary, and will be deleted as soon as finish_command sees | |
3707 | the inferior stopped. So it doesn't matter that the bp's | |
3708 | address is probably bogus in the new a.out, unlike e.g., the | |
3709 | solib breakpoints.) */ | |
3710 | ||
3711 | if (b->type == bp_finish) | |
3712 | { | |
3713 | continue; | |
3714 | } | |
3715 | ||
3716 | /* Without a symbolic address, we have little hope of the | |
3717 | pre-exec() address meaning the same thing in the post-exec() | |
3718 | a.out. */ | |
3719 | if (breakpoint_event_location_empty_p (b)) | |
3720 | { | |
3721 | delete_breakpoint (b); | |
3722 | continue; | |
3723 | } | |
3724 | } | |
c906108c SS |
3725 | } |
3726 | ||
3727 | int | |
d80ee84f | 3728 | detach_breakpoints (ptid_t ptid) |
c906108c | 3729 | { |
3a1bae8e | 3730 | int val = 0; |
2989a365 | 3731 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3732 | struct inferior *inf = current_inferior (); |
c5aa993b | 3733 | |
e99b03dc | 3734 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3735 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3736 | |
6c95b8df | 3737 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3738 | inferior_ptid = ptid; |
48d7020b | 3739 | for (bp_location *bl : all_bp_locations ()) |
01add95b SM |
3740 | { |
3741 | if (bl->pspace != inf->pspace) | |
3742 | continue; | |
3743 | ||
3744 | /* This function must physically remove breakpoints locations | |
3745 | from the specified ptid, without modifying the breakpoint | |
3746 | package's state. Locations of type bp_loc_other are only | |
3747 | maintained at GDB side. So, there is no need to remove | |
3748 | these bp_loc_other locations. Moreover, removing these | |
3749 | would modify the breakpoint package's state. */ | |
3750 | if (bl->loc_type == bp_loc_other) | |
3751 | continue; | |
3752 | ||
3753 | if (bl->inserted) | |
3754 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); | |
3755 | } | |
d03285ec | 3756 | |
3a1bae8e | 3757 | return val; |
c906108c SS |
3758 | } |
3759 | ||
35df4500 | 3760 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3761 | Note that this is used to detach breakpoints from a child fork. |
3762 | When we get here, the child isn't in the inferior list, and neither | |
3763 | do we have objects to represent its address space --- we should | |
35df4500 | 3764 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3765 | |
c906108c | 3766 | static int |
b2b6a7da | 3767 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3768 | { |
3769 | int val; | |
c5aa993b | 3770 | |
35df4500 TJB |
3771 | /* BL is never in moribund_locations by our callers. */ |
3772 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3773 | |
74960c60 VP |
3774 | /* The type of none suggests that owner is actually deleted. |
3775 | This should not ever happen. */ | |
35df4500 | 3776 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3777 | |
35df4500 TJB |
3778 | if (bl->loc_type == bp_loc_software_breakpoint |
3779 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3780 | { |
c02f5703 MS |
3781 | /* "Normal" instruction breakpoint: either the standard |
3782 | trap-instruction bp (bp_breakpoint), or a | |
3783 | bp_hardware_breakpoint. */ | |
3784 | ||
3785 | /* First check to see if we have to handle an overlay. */ | |
3786 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3787 | || bl->section == NULL |
3788 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3789 | { |
3790 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3791 | |
3792 | /* If we're trying to uninsert a memory breakpoint that we | |
3793 | know is set in a dynamic object that is marked | |
3794 | shlib_disabled, then either the dynamic object was | |
3795 | removed with "remove-symbol-file" or with | |
3796 | "nosharedlibrary". In the former case, we don't know | |
3797 | whether another dynamic object might have loaded over the | |
3798 | breakpoint's address -- the user might well let us know | |
3799 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3800 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3801 | list of dynamically loaded objects). If we have the |
3802 | breakpoint's shadow memory, that is, this is a software | |
3803 | breakpoint managed by GDB, check whether the breakpoint | |
3804 | is still inserted in memory, to avoid overwriting wrong | |
3805 | code with stale saved shadow contents. Note that HW | |
3806 | breakpoints don't have shadow memory, as they're | |
3807 | implemented using a mechanism that is not dependent on | |
3808 | being able to modify the target's memory, and as such | |
3809 | they should always be removed. */ | |
3810 | if (bl->shlib_disabled | |
3811 | && bl->target_info.shadow_len != 0 | |
3812 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3813 | val = 0; | |
3814 | else | |
73971819 | 3815 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3816 | } |
c906108c SS |
3817 | else |
3818 | { | |
4a64f543 | 3819 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3820 | Did we set a breakpoint at the LMA? */ |
3821 | if (!overlay_events_enabled) | |
3822 | { | |
3823 | /* Yes -- overlay event support is not active, so we | |
3824 | should have set a breakpoint at the LMA. Remove it. | |
3825 | */ | |
c02f5703 MS |
3826 | /* Ignore any failures: if the LMA is in ROM, we will |
3827 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3828 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3829 | target_remove_hw_breakpoint (bl->gdbarch, | |
3830 | &bl->overlay_target_info); | |
c02f5703 | 3831 | else |
35df4500 | 3832 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3833 | &bl->overlay_target_info, |
3834 | reason); | |
c02f5703 MS |
3835 | } |
3836 | /* Did we set a breakpoint at the VMA? | |
3837 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3838 | if (bl->inserted) |
c906108c | 3839 | { |
c02f5703 MS |
3840 | /* Yes -- remove it. Previously we did not bother to |
3841 | remove the breakpoint if the section had been | |
3842 | unmapped, but let's not rely on that being safe. We | |
3843 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3844 | |
3845 | /* However, we should remove *software* breakpoints only | |
3846 | if the section is still mapped, or else we overwrite | |
3847 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3848 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3849 | || section_is_mapped (bl->section)) | |
73971819 | 3850 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3851 | else |
3852 | val = 0; | |
c906108c | 3853 | } |
c02f5703 MS |
3854 | else |
3855 | { | |
3856 | /* No -- not inserted, so no need to remove. No error. */ | |
3857 | val = 0; | |
3858 | } | |
c906108c | 3859 | } |
879d1e6b | 3860 | |
08351840 PA |
3861 | /* In some cases, we might not be able to remove a breakpoint in |
3862 | a shared library that has already been removed, but we have | |
3863 | not yet processed the shlib unload event. Similarly for an | |
3864 | unloaded add-symbol-file object - the user might not yet have | |
3865 | had the chance to remove-symbol-file it. shlib_disabled will | |
3866 | be set if the library/object has already been removed, but | |
3867 | the breakpoint hasn't been uninserted yet, e.g., after | |
3868 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3869 | always-inserted mode. */ | |
076855f9 | 3870 | if (val |
08351840 PA |
3871 | && (bl->loc_type == bp_loc_software_breakpoint |
3872 | && (bl->shlib_disabled | |
3873 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3874 | || shared_objfile_contains_address_p (bl->pspace, |
3875 | bl->address)))) | |
879d1e6b UW |
3876 | val = 0; |
3877 | ||
c906108c SS |
3878 | if (val) |
3879 | return val; | |
b2b6a7da | 3880 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3881 | } |
35df4500 | 3882 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3883 | { |
77b06cd7 TJB |
3884 | gdb_assert (bl->owner->ops != NULL |
3885 | && bl->owner->ops->remove_location != NULL); | |
3886 | ||
b2b6a7da | 3887 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3888 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3889 | |
c906108c | 3890 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3891 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3892 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3893 | bl->owner->number); |
c906108c | 3894 | } |
35df4500 | 3895 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
3896 | && breakpoint_enabled (bl->owner) |
3897 | && !bl->duplicate) | |
ce78b96d | 3898 | { |
77b06cd7 TJB |
3899 | gdb_assert (bl->owner->ops != NULL |
3900 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3901 | |
73971819 | 3902 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3903 | if (val) |
3904 | return val; | |
77b06cd7 | 3905 | |
b2b6a7da | 3906 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3907 | } |
c906108c SS |
3908 | |
3909 | return 0; | |
3910 | } | |
3911 | ||
6c95b8df | 3912 | static int |
834c0d03 | 3913 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3914 | { |
35df4500 TJB |
3915 | /* BL is never in moribund_locations by our callers. */ |
3916 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3917 | |
6c95b8df PA |
3918 | /* The type of none suggests that owner is actually deleted. |
3919 | This should not ever happen. */ | |
35df4500 | 3920 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3921 | |
5ed8105e | 3922 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3923 | |
35df4500 | 3924 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3925 | |
5ed8105e | 3926 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3927 | } |
3928 | ||
c906108c SS |
3929 | /* Clear the "inserted" flag in all breakpoints. */ |
3930 | ||
25b22b0a | 3931 | void |
fba45db2 | 3932 | mark_breakpoints_out (void) |
c906108c | 3933 | { |
48d7020b | 3934 | for (bp_location *bl : all_bp_locations ()) |
66c4b3e8 | 3935 | if (bl->pspace == current_program_space) |
35df4500 | 3936 | bl->inserted = 0; |
c906108c SS |
3937 | } |
3938 | ||
53a5351d JM |
3939 | /* Clear the "inserted" flag in all breakpoints and delete any |
3940 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3941 | |
3942 | Plus other such housekeeping that has to be done for breakpoints | |
3943 | between runs. | |
3944 | ||
53a5351d JM |
3945 | Note: this function gets called at the end of a run (by |
3946 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3947 | init_wait_for_inferior). */ |
c906108c SS |
3948 | |
3949 | ||
3950 | ||
3951 | void | |
fba45db2 | 3952 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3953 | { |
6c95b8df | 3954 | struct program_space *pspace = current_program_space; |
c906108c | 3955 | |
50c71eaf PA |
3956 | /* If breakpoint locations are shared across processes, then there's |
3957 | nothing to do. */ | |
f5656ead | 3958 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3959 | return; |
3960 | ||
1a853c52 | 3961 | mark_breakpoints_out (); |
075f6582 | 3962 | |
1428b37a | 3963 | for (breakpoint *b : all_breakpoints_safe ()) |
01add95b SM |
3964 | { |
3965 | if (b->loc && b->loc->pspace != pspace) | |
3966 | continue; | |
6c95b8df | 3967 | |
01add95b SM |
3968 | switch (b->type) |
3969 | { | |
3970 | case bp_call_dummy: | |
3971 | case bp_longjmp_call_dummy: | |
c906108c | 3972 | |
01add95b SM |
3973 | /* If the call dummy breakpoint is at the entry point it will |
3974 | cause problems when the inferior is rerun, so we better get | |
3975 | rid of it. */ | |
ab92d69b | 3976 | |
01add95b | 3977 | case bp_watchpoint_scope: |
ab92d69b | 3978 | |
01add95b | 3979 | /* Also get rid of scope breakpoints. */ |
ab92d69b | 3980 | |
01add95b | 3981 | case bp_shlib_event: |
ab92d69b | 3982 | |
01add95b SM |
3983 | /* Also remove solib event breakpoints. Their addresses may |
3984 | have changed since the last time we ran the program. | |
3985 | Actually we may now be debugging against different target; | |
3986 | and so the solib backend that installed this breakpoint may | |
3987 | not be used in by the target. E.g., | |
ab92d69b | 3988 | |
01add95b SM |
3989 | (gdb) file prog-linux |
3990 | (gdb) run # native linux target | |
3991 | ... | |
3992 | (gdb) kill | |
3993 | (gdb) file prog-win.exe | |
3994 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3995 | */ | |
c906108c | 3996 | |
01add95b | 3997 | case bp_step_resume: |
f59f708a | 3998 | |
01add95b | 3999 | /* Also remove step-resume breakpoints. */ |
f59f708a | 4000 | |
01add95b | 4001 | case bp_single_step: |
7c16b83e | 4002 | |
01add95b | 4003 | /* Also remove single-step breakpoints. */ |
7c16b83e | 4004 | |
01add95b SM |
4005 | delete_breakpoint (b); |
4006 | break; | |
c906108c | 4007 | |
01add95b SM |
4008 | case bp_watchpoint: |
4009 | case bp_hardware_watchpoint: | |
4010 | case bp_read_watchpoint: | |
4011 | case bp_access_watchpoint: | |
4012 | { | |
4013 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4014 | |
01add95b SM |
4015 | /* Likewise for watchpoints on local expressions. */ |
4016 | if (w->exp_valid_block != NULL) | |
4017 | delete_breakpoint (b); | |
4018 | else | |
4019 | { | |
4020 | /* Get rid of existing locations, which are no longer | |
4021 | valid. New ones will be created in | |
4022 | update_watchpoint, when the inferior is restarted. | |
4023 | The next update_global_location_list call will | |
4024 | garbage collect them. */ | |
4025 | b->loc = NULL; | |
4026 | ||
4027 | if (context == inf_starting) | |
4028 | { | |
4029 | /* Reset val field to force reread of starting value in | |
4030 | insert_breakpoints. */ | |
4031 | w->val.reset (nullptr); | |
4032 | w->val_valid = false; | |
4033 | } | |
4034 | } | |
4035 | } | |
4036 | break; | |
4037 | default: | |
4038 | break; | |
3a5c3e22 | 4039 | } |
01add95b | 4040 | } |
1c5cfe86 PA |
4041 | |
4042 | /* Get rid of the moribund locations. */ | |
1123588c | 4043 | for (bp_location *bl : moribund_locations) |
35df4500 | 4044 | decref_bp_location (&bl); |
1123588c | 4045 | moribund_locations.clear (); |
c906108c SS |
4046 | } |
4047 | ||
6c95b8df PA |
4048 | /* These functions concern about actual breakpoints inserted in the |
4049 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4050 | we need to hop over the bkpt --- so we check for address space | |
4051 | match, not program space. */ | |
4052 | ||
c2c6d25f JM |
4053 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4054 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4055 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4056 | permanent breakpoint. | |
4057 | - When continuing from a location with an ordinary breakpoint, we | |
4058 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4059 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4060 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4061 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4062 | |
c2c6d25f | 4063 | enum breakpoint_here |
accd0bcd | 4064 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4065 | { |
c2c6d25f | 4066 | int any_breakpoint_here = 0; |
c906108c | 4067 | |
48d7020b | 4068 | for (bp_location *bl : all_bp_locations ()) |
075f6582 | 4069 | { |
35df4500 TJB |
4070 | if (bl->loc_type != bp_loc_software_breakpoint |
4071 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4072 | continue; |
4073 | ||
f1310107 | 4074 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4075 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4076 | || bl->permanent) |
f1310107 | 4077 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4078 | { |
4079 | if (overlay_debugging | |
35df4500 TJB |
4080 | && section_is_overlay (bl->section) |
4081 | && !section_is_mapped (bl->section)) | |
075f6582 | 4082 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4083 | else if (bl->permanent) |
075f6582 DJ |
4084 | return permanent_breakpoint_here; |
4085 | else | |
4086 | any_breakpoint_here = 1; | |
4087 | } | |
4088 | } | |
c906108c | 4089 | |
f486487f | 4090 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4091 | } |
4092 | ||
d35ae833 PA |
4093 | /* See breakpoint.h. */ |
4094 | ||
4095 | int | |
accd0bcd | 4096 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4097 | CORE_ADDR addr, ULONGEST len) |
4098 | { | |
48d7020b | 4099 | for (bp_location *bl : all_bp_locations ()) |
d35ae833 PA |
4100 | { |
4101 | if (bl->loc_type != bp_loc_software_breakpoint | |
4102 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4103 | continue; | |
4104 | ||
4105 | if ((breakpoint_enabled (bl->owner) | |
4106 | || bl->permanent) | |
4107 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4108 | addr, len)) | |
4109 | { | |
4110 | if (overlay_debugging | |
4111 | && section_is_overlay (bl->section) | |
4112 | && !section_is_mapped (bl->section)) | |
4113 | { | |
4114 | /* Unmapped overlay -- can't be a match. */ | |
4115 | continue; | |
4116 | } | |
4117 | ||
4118 | return 1; | |
4119 | } | |
4120 | } | |
4121 | ||
4122 | return 0; | |
4123 | } | |
4124 | ||
1c5cfe86 PA |
4125 | /* Return true if there's a moribund breakpoint at PC. */ |
4126 | ||
4127 | int | |
accd0bcd | 4128 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4129 | { |
1123588c | 4130 | for (bp_location *loc : moribund_locations) |
f1310107 | 4131 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4132 | return 1; |
4133 | ||
4134 | return 0; | |
4135 | } | |
c2c6d25f | 4136 | |
f7ce857f PA |
4137 | /* Returns non-zero iff BL is inserted at PC, in address space |
4138 | ASPACE. */ | |
4139 | ||
4140 | static int | |
4141 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4142 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4143 | { |
4144 | if (bl->inserted | |
4145 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4146 | aspace, pc)) | |
4147 | { | |
4148 | if (overlay_debugging | |
4149 | && section_is_overlay (bl->section) | |
4150 | && !section_is_mapped (bl->section)) | |
4151 | return 0; /* unmapped overlay -- can't be a match */ | |
4152 | else | |
4153 | return 1; | |
4154 | } | |
4155 | return 0; | |
4156 | } | |
4157 | ||
a1fd2fa5 | 4158 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4159 | |
4160 | int | |
accd0bcd | 4161 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4162 | { |
e0d9a270 | 4163 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
c5aa993b | 4164 | { |
35df4500 TJB |
4165 | if (bl->loc_type != bp_loc_software_breakpoint |
4166 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4167 | continue; |
4168 | ||
f7ce857f PA |
4169 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4170 | return 1; | |
c5aa993b | 4171 | } |
c36b740a VP |
4172 | return 0; |
4173 | } | |
4174 | ||
a1fd2fa5 PA |
4175 | /* This function returns non-zero iff there is a software breakpoint |
4176 | inserted at PC. */ | |
c36b740a VP |
4177 | |
4178 | int | |
accd0bcd | 4179 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4180 | CORE_ADDR pc) |
4fa8626c | 4181 | { |
e0d9a270 | 4182 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
4fa8626c | 4183 | { |
35df4500 | 4184 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4185 | continue; |
4186 | ||
f7ce857f PA |
4187 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4188 | return 1; | |
4fa8626c DJ |
4189 | } |
4190 | ||
4191 | return 0; | |
9c02b525 PA |
4192 | } |
4193 | ||
4194 | /* See breakpoint.h. */ | |
4195 | ||
4196 | int | |
accd0bcd | 4197 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4198 | CORE_ADDR pc) |
4199 | { | |
e0d9a270 | 4200 | for (bp_location *bl : all_bp_locations_at_addr (pc)) |
9c02b525 | 4201 | { |
9c02b525 PA |
4202 | if (bl->loc_type != bp_loc_hardware_breakpoint) |
4203 | continue; | |
4204 | ||
4205 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4206 | return 1; | |
4207 | } | |
4208 | ||
4209 | return 0; | |
4fa8626c DJ |
4210 | } |
4211 | ||
9093389c | 4212 | int |
accd0bcd | 4213 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4214 | CORE_ADDR addr, ULONGEST len) |
4215 | { | |
43892fdf | 4216 | for (breakpoint *bpt : all_breakpoints ()) |
9093389c | 4217 | { |
9093389c PA |
4218 | if (bpt->type != bp_hardware_watchpoint |
4219 | && bpt->type != bp_access_watchpoint) | |
4220 | continue; | |
4221 | ||
4222 | if (!breakpoint_enabled (bpt)) | |
4223 | continue; | |
4224 | ||
40cb8ca5 | 4225 | for (bp_location *loc : bpt->locations ()) |
9093389c PA |
4226 | if (loc->pspace->aspace == aspace && loc->inserted) |
4227 | { | |
4228 | CORE_ADDR l, h; | |
4229 | ||
4230 | /* Check for intersection. */ | |
768adc05 PA |
4231 | l = std::max<CORE_ADDR> (loc->address, addr); |
4232 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4233 | if (l < h) |
4234 | return 1; | |
4235 | } | |
4236 | } | |
4237 | return 0; | |
4238 | } | |
c5aa993b | 4239 | |
f2478a7e | 4240 | /* See breakpoint.h. */ |
c906108c | 4241 | |
f2478a7e SM |
4242 | bool |
4243 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4244 | { |
f2478a7e | 4245 | return (b->type == bp_catchpoint); |
c906108c SS |
4246 | } |
4247 | ||
c906108c SS |
4248 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4249 | Also free any storage that is part of a bpstat. */ | |
4250 | ||
4251 | void | |
fba45db2 | 4252 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4253 | { |
4254 | bpstat p; | |
4255 | bpstat q; | |
4256 | ||
4257 | if (bsp == 0) | |
4258 | return; | |
4259 | p = *bsp; | |
4260 | while (p != NULL) | |
4261 | { | |
4262 | q = p->next; | |
04afa70c | 4263 | delete p; |
c906108c SS |
4264 | p = q; |
4265 | } | |
4266 | *bsp = NULL; | |
4267 | } | |
4268 | ||
04afa70c TT |
4269 | bpstats::bpstats (const bpstats &other) |
4270 | : next (NULL), | |
4271 | bp_location_at (other.bp_location_at), | |
4272 | breakpoint_at (other.breakpoint_at), | |
4273 | commands (other.commands), | |
04afa70c TT |
4274 | print (other.print), |
4275 | stop (other.stop), | |
4276 | print_it (other.print_it) | |
4277 | { | |
850645cf TT |
4278 | if (other.old_val != NULL) |
4279 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c TT |
4280 | } |
4281 | ||
c906108c SS |
4282 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4283 | is part of the bpstat is copied as well. */ | |
4284 | ||
4285 | bpstat | |
fba45db2 | 4286 | bpstat_copy (bpstat bs) |
c906108c SS |
4287 | { |
4288 | bpstat p = NULL; | |
4289 | bpstat tmp; | |
4290 | bpstat retval = NULL; | |
4291 | ||
4292 | if (bs == NULL) | |
4293 | return bs; | |
4294 | ||
4295 | for (; bs != NULL; bs = bs->next) | |
4296 | { | |
04afa70c | 4297 | tmp = new bpstats (*bs); |
31cc81e9 | 4298 | |
c906108c SS |
4299 | if (p == NULL) |
4300 | /* This is the first thing in the chain. */ | |
4301 | retval = tmp; | |
4302 | else | |
4303 | p->next = tmp; | |
4304 | p = tmp; | |
4305 | } | |
4306 | p->next = NULL; | |
4307 | return retval; | |
4308 | } | |
4309 | ||
4a64f543 | 4310 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4311 | |
4312 | bpstat | |
fba45db2 | 4313 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4314 | { |
c5aa993b JM |
4315 | if (bsp == NULL) |
4316 | return NULL; | |
c906108c | 4317 | |
c5aa993b JM |
4318 | for (; bsp != NULL; bsp = bsp->next) |
4319 | { | |
f431efe5 | 4320 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4321 | return bsp; |
4322 | } | |
c906108c SS |
4323 | return NULL; |
4324 | } | |
4325 | ||
ab04a2af TT |
4326 | /* See breakpoint.h. */ |
4327 | ||
4c462cb0 | 4328 | bool |
427cd150 | 4329 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4330 | { |
ab04a2af TT |
4331 | for (; bsp != NULL; bsp = bsp->next) |
4332 | { | |
427cd150 TT |
4333 | if (bsp->breakpoint_at == NULL) |
4334 | { | |
4335 | /* A moribund location can never explain a signal other than | |
4336 | GDB_SIGNAL_TRAP. */ | |
4337 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4338 | return true; |
427cd150 TT |
4339 | } |
4340 | else | |
47591c29 PA |
4341 | { |
4342 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4343 | sig)) | |
4c462cb0 | 4344 | return true; |
47591c29 | 4345 | } |
ab04a2af TT |
4346 | } |
4347 | ||
4c462cb0 | 4348 | return false; |
ab04a2af TT |
4349 | } |
4350 | ||
4a64f543 MS |
4351 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4352 | stopped at. *BSP upon return is a bpstat which points to the | |
4353 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4354 | good for anything but further calls to bpstat_num). | |
4355 | ||
8671a17b PA |
4356 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4357 | Return -1 if stopped at a breakpoint that has been deleted since | |
4358 | we set it. | |
4359 | Return 1 otherwise. */ | |
c906108c SS |
4360 | |
4361 | int | |
8671a17b | 4362 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4363 | { |
4364 | struct breakpoint *b; | |
4365 | ||
4366 | if ((*bsp) == NULL) | |
4367 | return 0; /* No more breakpoint values */ | |
8671a17b | 4368 | |
4a64f543 MS |
4369 | /* We assume we'll never have several bpstats that correspond to a |
4370 | single breakpoint -- otherwise, this function might return the | |
4371 | same number more than once and this will look ugly. */ | |
f431efe5 | 4372 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4373 | *bsp = (*bsp)->next; |
4374 | if (b == NULL) | |
4375 | return -1; /* breakpoint that's been deleted since */ | |
4376 | ||
4377 | *num = b->number; /* We have its number */ | |
4378 | return 1; | |
c906108c SS |
4379 | } |
4380 | ||
e93ca019 | 4381 | /* See breakpoint.h. */ |
c906108c SS |
4382 | |
4383 | void | |
e93ca019 | 4384 | bpstat_clear_actions (void) |
c906108c | 4385 | { |
e93ca019 JK |
4386 | bpstat bs; |
4387 | ||
00431a78 | 4388 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4389 | return; |
4390 | ||
00431a78 | 4391 | thread_info *tp = inferior_thread (); |
e93ca019 | 4392 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4393 | { |
d1b0a7bf | 4394 | bs->commands = NULL; |
850645cf | 4395 | bs->old_val.reset (nullptr); |
c906108c SS |
4396 | } |
4397 | } | |
4398 | ||
f3b1572e PA |
4399 | /* Called when a command is about to proceed the inferior. */ |
4400 | ||
4401 | static void | |
4402 | breakpoint_about_to_proceed (void) | |
4403 | { | |
d7e15655 | 4404 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4405 | { |
4406 | struct thread_info *tp = inferior_thread (); | |
4407 | ||
4408 | /* Allow inferior function calls in breakpoint commands to not | |
4409 | interrupt the command list. When the call finishes | |
4410 | successfully, the inferior will be standing at the same | |
4411 | breakpoint as if nothing happened. */ | |
16c381f0 | 4412 | if (tp->control.in_infcall) |
f3b1572e PA |
4413 | return; |
4414 | } | |
4415 | ||
4416 | breakpoint_proceeded = 1; | |
4417 | } | |
4418 | ||
abf85f46 JK |
4419 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4420 | or its equivalent. */ | |
4421 | ||
4422 | static int | |
4423 | command_line_is_silent (struct command_line *cmd) | |
4424 | { | |
4f45d445 | 4425 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4426 | } |
4427 | ||
4a64f543 MS |
4428 | /* Execute all the commands associated with all the breakpoints at |
4429 | this location. Any of these commands could cause the process to | |
4430 | proceed beyond this point, etc. We look out for such changes by | |
4431 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4432 | |
347bddb7 PA |
4433 | Returns true if a breakpoint command resumed the inferior. In that |
4434 | case, it is the caller's responsibility to recall it again with the | |
4435 | bpstat of the current thread. */ | |
4436 | ||
4437 | static int | |
4438 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4439 | { |
4440 | bpstat bs; | |
347bddb7 | 4441 | int again = 0; |
c906108c SS |
4442 | |
4443 | /* Avoid endless recursion if a `source' command is contained | |
4444 | in bs->commands. */ | |
4445 | if (executing_breakpoint_commands) | |
347bddb7 | 4446 | return 0; |
c906108c | 4447 | |
81b1e71c TT |
4448 | scoped_restore save_executing |
4449 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4450 | |
1ac32117 | 4451 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4452 | |
4a64f543 | 4453 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4454 | bs = *bsp; |
4455 | ||
4456 | breakpoint_proceeded = 0; | |
4457 | for (; bs != NULL; bs = bs->next) | |
4458 | { | |
d1b0a7bf | 4459 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4460 | |
4461 | /* Take ownership of the BSP's command tree, if it has one. | |
4462 | ||
dda83cd7 SM |
4463 | The command tree could legitimately contain commands like |
4464 | 'step' and 'next', which call clear_proceed_status, which | |
4465 | frees stop_bpstat's command tree. To make sure this doesn't | |
4466 | free the tree we're executing out from under us, we need to | |
4467 | take ownership of the tree ourselves. Since a given bpstat's | |
4468 | commands are only executed once, we don't need to copy it; we | |
4469 | can clear the pointer in the bpstat, and make sure we free | |
4470 | the tree when we're done. */ | |
d1b0a7bf | 4471 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4472 | bs->commands = NULL; |
d1b0a7bf TT |
4473 | if (ccmd != NULL) |
4474 | cmd = ccmd.get (); | |
abf85f46 JK |
4475 | if (command_line_is_silent (cmd)) |
4476 | { | |
4477 | /* The action has been already done by bpstat_stop_status. */ | |
4478 | cmd = cmd->next; | |
4479 | } | |
6c50ab1c | 4480 | |
c906108c SS |
4481 | while (cmd != NULL) |
4482 | { | |
4483 | execute_control_command (cmd); | |
4484 | ||
4485 | if (breakpoint_proceeded) | |
4486 | break; | |
4487 | else | |
4488 | cmd = cmd->next; | |
4489 | } | |
6c50ab1c | 4490 | |
c906108c | 4491 | if (breakpoint_proceeded) |
32c1e744 | 4492 | { |
cb814510 | 4493 | if (current_ui->async) |
347bddb7 PA |
4494 | /* If we are in async mode, then the target might be still |
4495 | running, not stopped at any breakpoint, so nothing for | |
4496 | us to do here -- just return to the event loop. */ | |
4497 | ; | |
32c1e744 VP |
4498 | else |
4499 | /* In sync mode, when execute_control_command returns | |
4500 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4501 | Breakpoint commands for that stop were not run, since |
4502 | execute_command does not run breakpoint commands -- | |
4503 | only command_line_handler does, but that one is not | |
4504 | involved in execution of breakpoint commands. So, we | |
4505 | can now execute breakpoint commands. It should be | |
4506 | noted that making execute_command do bpstat actions is | |
4507 | not an option -- in this case we'll have recursive | |
4508 | invocation of bpstat for each breakpoint with a | |
4509 | command, and can easily blow up GDB stack. Instead, we | |
4510 | return true, which will trigger the caller to recall us | |
4511 | with the new stop_bpstat. */ | |
4512 | again = 1; | |
4513 | break; | |
32c1e744 | 4514 | } |
c906108c | 4515 | } |
347bddb7 PA |
4516 | return again; |
4517 | } | |
4518 | ||
00431a78 PA |
4519 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4520 | one, is alive and has execution. Return NULL otherwise. */ | |
4521 | ||
4522 | static thread_info * | |
4523 | get_bpstat_thread () | |
4524 | { | |
55f6301a | 4525 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4526 | return NULL; |
4527 | ||
4528 | thread_info *tp = inferior_thread (); | |
4529 | if (tp->state == THREAD_EXITED || tp->executing) | |
4530 | return NULL; | |
4531 | return tp; | |
4532 | } | |
4533 | ||
347bddb7 PA |
4534 | void |
4535 | bpstat_do_actions (void) | |
4536 | { | |
694c6bf5 | 4537 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4538 | thread_info *tp; |
353d1d73 | 4539 | |
347bddb7 | 4540 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4541 | while ((tp = get_bpstat_thread ()) != NULL) |
4542 | { | |
4543 | /* Since in sync mode, bpstat_do_actions may resume the | |
4544 | inferior, and only return when it is stopped at the next | |
4545 | breakpoint, we keep doing breakpoint actions until it returns | |
4546 | false to indicate the inferior was not resumed. */ | |
4547 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4548 | break; | |
4549 | } | |
353d1d73 | 4550 | |
694c6bf5 | 4551 | cleanup_if_error.release (); |
c906108c SS |
4552 | } |
4553 | ||
fa4727a6 DJ |
4554 | /* Print out the (old or new) value associated with a watchpoint. */ |
4555 | ||
4556 | static void | |
4557 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4558 | { | |
4559 | if (val == NULL) | |
7f6aba03 | 4560 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4561 | else |
79a45b7d TT |
4562 | { |
4563 | struct value_print_options opts; | |
4564 | get_user_print_options (&opts); | |
4565 | value_print (val, stream, &opts); | |
4566 | } | |
fa4727a6 DJ |
4567 | } |
4568 | ||
f303dbd6 PA |
4569 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4570 | debugging multiple threads. */ | |
4571 | ||
4572 | void | |
4573 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4574 | { | |
112e8700 | 4575 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4576 | return; |
4577 | ||
112e8700 | 4578 | uiout->text ("\n"); |
f303dbd6 PA |
4579 | |
4580 | if (show_thread_that_caused_stop ()) | |
4581 | { | |
4582 | const char *name; | |
4583 | struct thread_info *thr = inferior_thread (); | |
4584 | ||
112e8700 | 4585 | uiout->text ("Thread "); |
33eca680 | 4586 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 PA |
4587 | |
4588 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4589 | if (name != NULL) | |
4590 | { | |
112e8700 | 4591 | uiout->text (" \""); |
33eca680 | 4592 | uiout->field_string ("name", name); |
112e8700 | 4593 | uiout->text ("\""); |
f303dbd6 PA |
4594 | } |
4595 | ||
112e8700 | 4596 | uiout->text (" hit "); |
f303dbd6 PA |
4597 | } |
4598 | } | |
4599 | ||
e514a9d6 | 4600 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4601 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4602 | 'print_it' in the bpstat structure. Under some circumstances we |
4603 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4604 | normal_stop(). */ |
e514a9d6 JM |
4605 | |
4606 | static enum print_stop_action | |
4607 | print_bp_stop_message (bpstat bs) | |
4608 | { | |
4609 | switch (bs->print_it) | |
4610 | { | |
4611 | case print_it_noop: | |
4a64f543 | 4612 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4613 | return PRINT_UNKNOWN; |
4614 | break; | |
4615 | ||
4616 | case print_it_done: | |
4617 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4618 | relevant messages. */ |
e514a9d6 JM |
4619 | return PRINT_SRC_AND_LOC; |
4620 | break; | |
4621 | ||
4622 | case print_it_normal: | |
4f8d1dc6 | 4623 | { |
f431efe5 PA |
4624 | struct breakpoint *b = bs->breakpoint_at; |
4625 | ||
1a6a67de TJB |
4626 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4627 | which has since been deleted. */ | |
4628 | if (b == NULL) | |
4629 | return PRINT_UNKNOWN; | |
4630 | ||
348d480f PA |
4631 | /* Normal case. Call the breakpoint's print_it method. */ |
4632 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4633 | } |
348d480f | 4634 | break; |
3086aeae | 4635 | |
e514a9d6 | 4636 | default: |
8e65ff28 | 4637 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4638 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4639 | break; |
c906108c | 4640 | } |
c906108c SS |
4641 | } |
4642 | ||
edcc5120 TT |
4643 | /* A helper function that prints a shared library stopped event. */ |
4644 | ||
4645 | static void | |
4646 | print_solib_event (int is_catchpoint) | |
4647 | { | |
6fb16ce6 | 4648 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4649 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4650 | |
4651 | if (!is_catchpoint) | |
4652 | { | |
4653 | if (any_added || any_deleted) | |
112e8700 | 4654 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4655 | else |
112e8700 SM |
4656 | current_uiout->text (_("Stopped due to shared library event (no " |
4657 | "libraries added or removed)\n")); | |
edcc5120 TT |
4658 | } |
4659 | ||
112e8700 SM |
4660 | if (current_uiout->is_mi_like_p ()) |
4661 | current_uiout->field_string ("reason", | |
4662 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4663 | |
4664 | if (any_deleted) | |
4665 | { | |
112e8700 | 4666 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4667 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4668 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4669 | { |
6fb16ce6 SM |
4670 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4671 | ||
edcc5120 | 4672 | if (ix > 0) |
112e8700 SM |
4673 | current_uiout->text (" "); |
4674 | current_uiout->field_string ("library", name); | |
4675 | current_uiout->text ("\n"); | |
edcc5120 | 4676 | } |
edcc5120 TT |
4677 | } |
4678 | ||
4679 | if (any_added) | |
4680 | { | |
112e8700 | 4681 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4682 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4683 | bool first = true; |
52941706 | 4684 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4685 | { |
bcb430e4 | 4686 | if (!first) |
112e8700 | 4687 | current_uiout->text (" "); |
bcb430e4 | 4688 | first = false; |
112e8700 SM |
4689 | current_uiout->field_string ("library", iter->so_name); |
4690 | current_uiout->text ("\n"); | |
edcc5120 | 4691 | } |
edcc5120 TT |
4692 | } |
4693 | } | |
4694 | ||
e514a9d6 JM |
4695 | /* Print a message indicating what happened. This is called from |
4696 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4697 | list - a list of the eventpoints that caused this stop. KIND is |
4698 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4699 | routine calls the generic print routine for printing a message |
4700 | about reasons for stopping. This will print (for example) the | |
4701 | "Breakpoint n," part of the output. The return value of this | |
4702 | routine is one of: | |
c906108c | 4703 | |
4a64f543 | 4704 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4705 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4706 | code to print the location. An example is |
c5aa993b JM |
4707 | "Breakpoint 1, " which should be followed by |
4708 | the location. | |
917317f4 | 4709 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4710 | to also print the location part of the message. |
4711 | An example is the catch/throw messages, which | |
4a64f543 | 4712 | don't require a location appended to the end. |
917317f4 | 4713 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4714 | further info to be printed. */ |
c906108c | 4715 | |
917317f4 | 4716 | enum print_stop_action |
36dfb11c | 4717 | bpstat_print (bpstat bs, int kind) |
c906108c | 4718 | { |
f486487f | 4719 | enum print_stop_action val; |
c5aa993b | 4720 | |
c906108c | 4721 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4722 | (Currently all watchpoints go on the bpstat whether hit or not. |
4723 | That probably could (should) be changed, provided care is taken | |
c906108c | 4724 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4725 | for (; bs; bs = bs->next) |
4726 | { | |
4727 | val = print_bp_stop_message (bs); | |
4728 | if (val == PRINT_SRC_ONLY | |
4729 | || val == PRINT_SRC_AND_LOC | |
4730 | || val == PRINT_NOTHING) | |
4731 | return val; | |
4732 | } | |
c906108c | 4733 | |
36dfb11c TT |
4734 | /* If we had hit a shared library event breakpoint, |
4735 | print_bp_stop_message would print out this message. If we hit an | |
4736 | OS-level shared library event, do the same thing. */ | |
4737 | if (kind == TARGET_WAITKIND_LOADED) | |
4738 | { | |
edcc5120 | 4739 | print_solib_event (0); |
36dfb11c TT |
4740 | return PRINT_NOTHING; |
4741 | } | |
4742 | ||
e514a9d6 | 4743 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4744 | with and nothing was printed. */ |
917317f4 | 4745 | return PRINT_UNKNOWN; |
c906108c SS |
4746 | } |
4747 | ||
bf469271 | 4748 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4749 | |
bf469271 PA |
4750 | static bool |
4751 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4752 | { |
278cd55f | 4753 | struct value *mark = value_mark (); |
bf469271 | 4754 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4755 | |
c906108c | 4756 | value_free_to_mark (mark); |
bf469271 | 4757 | return res; |
c906108c SS |
4758 | } |
4759 | ||
5760d0ab | 4760 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4761 | |
04afa70c TT |
4762 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4763 | : next (NULL), | |
b6433ede | 4764 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4765 | breakpoint_at (bl->owner), |
4766 | commands (NULL), | |
04afa70c TT |
4767 | print (0), |
4768 | stop (0), | |
4769 | print_it (print_it_normal) | |
c906108c | 4770 | { |
04afa70c TT |
4771 | **bs_link_pointer = this; |
4772 | *bs_link_pointer = &next; | |
4773 | } | |
4774 | ||
4775 | bpstats::bpstats () | |
4776 | : next (NULL), | |
04afa70c TT |
4777 | breakpoint_at (NULL), |
4778 | commands (NULL), | |
04afa70c TT |
4779 | print (0), |
4780 | stop (0), | |
4781 | print_it (print_it_normal) | |
4782 | { | |
c906108c SS |
4783 | } |
4784 | \f | |
d983da9c DJ |
4785 | /* The target has stopped with waitstatus WS. Check if any hardware |
4786 | watchpoints have triggered, according to the target. */ | |
4787 | ||
4788 | int | |
4789 | watchpoints_triggered (struct target_waitstatus *ws) | |
4790 | { | |
57810aa7 | 4791 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c | 4792 | CORE_ADDR addr; |
d983da9c DJ |
4793 | |
4794 | if (!stopped_by_watchpoint) | |
4795 | { | |
4796 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4797 | as not triggered. */ | |
43892fdf | 4798 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4799 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4800 | { |
4801 | struct watchpoint *w = (struct watchpoint *) b; | |
4802 | ||
4803 | w->watchpoint_triggered = watch_triggered_no; | |
4804 | } | |
d983da9c DJ |
4805 | |
4806 | return 0; | |
4807 | } | |
4808 | ||
328d42d8 | 4809 | if (!target_stopped_data_address (current_inferior ()->top_target (), &addr)) |
d983da9c DJ |
4810 | { |
4811 | /* We were stopped by a watchpoint, but we don't know where. | |
4812 | Mark all watchpoints as unknown. */ | |
43892fdf | 4813 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4814 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4815 | { |
4816 | struct watchpoint *w = (struct watchpoint *) b; | |
4817 | ||
4818 | w->watchpoint_triggered = watch_triggered_unknown; | |
4819 | } | |
d983da9c | 4820 | |
3c4797ba | 4821 | return 1; |
d983da9c DJ |
4822 | } |
4823 | ||
4824 | /* The target could report the data address. Mark watchpoints | |
4825 | affected by this data address as triggered, and all others as not | |
4826 | triggered. */ | |
4827 | ||
43892fdf | 4828 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 4829 | if (is_hardware_watchpoint (b)) |
d983da9c | 4830 | { |
3a5c3e22 | 4831 | struct watchpoint *w = (struct watchpoint *) b; |
d983da9c | 4832 | |
3a5c3e22 | 4833 | w->watchpoint_triggered = watch_triggered_no; |
40cb8ca5 | 4834 | for (bp_location *loc : b->locations ()) |
9c06b0b4 | 4835 | { |
3a5c3e22 | 4836 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4837 | { |
3a5c3e22 PA |
4838 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4839 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4840 | |
4841 | if (newaddr == start) | |
4842 | { | |
3a5c3e22 | 4843 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4844 | break; |
4845 | } | |
4846 | } | |
4847 | /* Exact match not required. Within range is sufficient. */ | |
328d42d8 SM |
4848 | else if (target_watchpoint_addr_within_range |
4849 | (current_inferior ()->top_target (), addr, loc->address, | |
4850 | loc->length)) | |
9c06b0b4 | 4851 | { |
3a5c3e22 | 4852 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4853 | break; |
4854 | } | |
4855 | } | |
d983da9c DJ |
4856 | } |
4857 | ||
4858 | return 1; | |
4859 | } | |
4860 | ||
bf469271 PA |
4861 | /* Possible return values for watchpoint_check. */ |
4862 | enum wp_check_result | |
4863 | { | |
4864 | /* The watchpoint has been deleted. */ | |
4865 | WP_DELETED = 1, | |
4866 | ||
4867 | /* The value has changed. */ | |
4868 | WP_VALUE_CHANGED = 2, | |
4869 | ||
4870 | /* The value has not changed. */ | |
4871 | WP_VALUE_NOT_CHANGED = 3, | |
4872 | ||
4873 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4874 | WP_IGNORE = 4, | |
4875 | }; | |
c906108c SS |
4876 | |
4877 | #define BP_TEMPFLAG 1 | |
4878 | #define BP_HARDWAREFLAG 2 | |
4879 | ||
4a64f543 | 4880 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4881 | changed. */ |
553e4c11 | 4882 | |
bf469271 PA |
4883 | static wp_check_result |
4884 | watchpoint_check (bpstat bs) | |
c906108c | 4885 | { |
3a5c3e22 | 4886 | struct watchpoint *b; |
c906108c SS |
4887 | struct frame_info *fr; |
4888 | int within_current_scope; | |
4889 | ||
f431efe5 | 4890 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4891 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4892 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4893 | |
f6bc2008 PA |
4894 | /* If this is a local watchpoint, we only want to check if the |
4895 | watchpoint frame is in scope if the current thread is the thread | |
4896 | that was used to create the watchpoint. */ | |
4897 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4898 | return WP_IGNORE; |
f6bc2008 | 4899 | |
c906108c SS |
4900 | if (b->exp_valid_block == NULL) |
4901 | within_current_scope = 1; | |
4902 | else | |
4903 | { | |
edb3359d DJ |
4904 | struct frame_info *frame = get_current_frame (); |
4905 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4906 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4907 | ||
c9cf6e20 | 4908 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4909 | still in the function but the stack frame has already been |
4910 | invalidated. Since we can't rely on the values of local | |
4911 | variables after the stack has been destroyed, we are treating | |
4912 | the watchpoint in that state as `not changed' without further | |
4913 | checking. Don't mark watchpoints as changed if the current | |
4914 | frame is in an epilogue - even if they are in some other | |
4915 | frame, our view of the stack is likely to be wrong and | |
4916 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4917 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4918 | return WP_IGNORE; |
a0f49112 | 4919 | |
101dcfbe | 4920 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4921 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4922 | |
4923 | /* If we've gotten confused in the unwinder, we might have | |
4924 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4925 | if (within_current_scope) |
4926 | { | |
4927 | struct symbol *function; | |
4928 | ||
4929 | function = get_frame_function (fr); | |
4930 | if (function == NULL | |
4931 | || !contained_in (b->exp_valid_block, | |
4932 | SYMBOL_BLOCK_VALUE (function))) | |
4933 | within_current_scope = 0; | |
4934 | } | |
69fbadd5 | 4935 | |
edb3359d | 4936 | if (within_current_scope) |
c906108c SS |
4937 | /* If we end up stopping, the current frame will get selected |
4938 | in normal_stop. So this call to select_frame won't affect | |
4939 | the user. */ | |
0f7d239c | 4940 | select_frame (fr); |
c906108c | 4941 | } |
c5aa993b | 4942 | |
c906108c SS |
4943 | if (within_current_scope) |
4944 | { | |
4a64f543 | 4945 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
4946 | time before we return to the command level and call |
4947 | free_all_values. We can't call free_all_values because we | |
4948 | might be in the middle of evaluating a function call. */ | |
c906108c | 4949 | |
9c06b0b4 | 4950 | struct value *mark; |
fa4727a6 DJ |
4951 | struct value *new_val; |
4952 | ||
c1fc2657 | 4953 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4954 | /* Since we don't know the exact trigger address (from |
4955 | stopped_data_address), just tell the user we've triggered | |
4956 | a mask watchpoint. */ | |
4957 | return WP_VALUE_CHANGED; | |
4958 | ||
4959 | mark = value_mark (); | |
1eaebe02 | 4960 | fetch_subexp_value (b->exp.get (), b->exp->op.get (), &new_val, |
413403fc | 4961 | NULL, NULL, false); |
218d2fc6 | 4962 | |
bb9d5f81 PP |
4963 | if (b->val_bitsize != 0) |
4964 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4965 | ||
4a64f543 MS |
4966 | /* We use value_equal_contents instead of value_equal because |
4967 | the latter coerces an array to a pointer, thus comparing just | |
4968 | the address of the array instead of its contents. This is | |
4969 | not what we want. */ | |
fa4727a6 | 4970 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4971 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4972 | new_val))) | |
c906108c | 4973 | { |
c906108c | 4974 | bs->old_val = b->val; |
850645cf | 4975 | b->val = release_value (new_val); |
4c1d86d9 | 4976 | b->val_valid = true; |
850645cf TT |
4977 | if (new_val != NULL) |
4978 | value_free_to_mark (mark); | |
c906108c SS |
4979 | return WP_VALUE_CHANGED; |
4980 | } | |
4981 | else | |
4982 | { | |
60e1c644 | 4983 | /* Nothing changed. */ |
c906108c | 4984 | value_free_to_mark (mark); |
c906108c SS |
4985 | return WP_VALUE_NOT_CHANGED; |
4986 | } | |
4987 | } | |
4988 | else | |
4989 | { | |
4990 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
4991 | if we temporarily ignored the watchpoint, then when |
4992 | we reenter the block in which it is valid it contains | |
4993 | garbage (in the case of a function, it may have two | |
4994 | garbage values, one before and one after the prologue). | |
4995 | So we can't even detect the first assignment to it and | |
4996 | watch after that (since the garbage may or may not equal | |
4997 | the first value assigned). */ | |
348d480f PA |
4998 | /* We print all the stop information in |
4999 | breakpoint_ops->print_it, but in this case, by the time we | |
5000 | call breakpoint_ops->print_it this bp will be deleted | |
5001 | already. So we have no choice but print the information | |
5002 | here. */ | |
468afe6c | 5003 | |
0e454242 | 5004 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 5005 | { |
468afe6c PA |
5006 | struct ui_out *uiout = current_uiout; |
5007 | ||
112e8700 SM |
5008 | if (uiout->is_mi_like_p ()) |
5009 | uiout->field_string | |
5010 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
5011 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
5012 | "left the block in\n" | |
5013 | "which its expression is valid.\n", | |
5014 | signed_field ("wpnum", b->number)); | |
468afe6c | 5015 | } |
4ce44c66 | 5016 | |
cdac0397 | 5017 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5018 | b->commands = NULL; |
d0fb5eae | 5019 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5020 | |
5021 | return WP_DELETED; | |
5022 | } | |
5023 | } | |
5024 | ||
18a18393 | 5025 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5026 | breakpoint location BL. This function does not check if we should |
5027 | stop, only if BL explains the stop. */ | |
5028 | ||
18a18393 | 5029 | static int |
6c95b8df | 5030 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5031 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5032 | const struct target_waitstatus *ws) |
18a18393 VP |
5033 | { |
5034 | struct breakpoint *b = bl->owner; | |
5035 | ||
348d480f | 5036 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5037 | gdb_assert (b != NULL); |
5038 | ||
bd522513 | 5039 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5040 | } |
5041 | ||
3a5c3e22 PA |
5042 | /* Determine if the watched values have actually changed, and we |
5043 | should stop. If not, set BS->stop to 0. */ | |
5044 | ||
18a18393 VP |
5045 | static void |
5046 | bpstat_check_watchpoint (bpstat bs) | |
5047 | { | |
2bdf28a0 | 5048 | const struct bp_location *bl; |
3a5c3e22 | 5049 | struct watchpoint *b; |
2bdf28a0 JK |
5050 | |
5051 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5052 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5053 | gdb_assert (bl != NULL); |
3a5c3e22 | 5054 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5055 | gdb_assert (b != NULL); |
18a18393 | 5056 | |
18a18393 | 5057 | { |
18a18393 VP |
5058 | int must_check_value = 0; |
5059 | ||
c1fc2657 | 5060 | if (b->type == bp_watchpoint) |
18a18393 VP |
5061 | /* For a software watchpoint, we must always check the |
5062 | watched value. */ | |
5063 | must_check_value = 1; | |
5064 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5065 | /* We have a hardware watchpoint (read, write, or access) | |
5066 | and the target earlier reported an address watched by | |
5067 | this watchpoint. */ | |
5068 | must_check_value = 1; | |
5069 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5070 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5071 | /* We were stopped by a hardware watchpoint, but the target could |
5072 | not report the data address. We must check the watchpoint's | |
5073 | value. Access and read watchpoints are out of luck; without | |
5074 | a data address, we can't figure it out. */ | |
5075 | must_check_value = 1; | |
3a5c3e22 | 5076 | |
18a18393 VP |
5077 | if (must_check_value) |
5078 | { | |
bf469271 PA |
5079 | wp_check_result e; |
5080 | ||
a70b8144 | 5081 | try |
bf469271 PA |
5082 | { |
5083 | e = watchpoint_check (bs); | |
5084 | } | |
230d2906 | 5085 | catch (const gdb_exception &ex) |
bf469271 PA |
5086 | { |
5087 | exception_fprintf (gdb_stderr, ex, | |
5088 | "Error evaluating expression " | |
5089 | "for watchpoint %d\n", | |
5090 | b->number); | |
5091 | ||
5092 | SWITCH_THRU_ALL_UIS () | |
5093 | { | |
5094 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5095 | b->number); | |
5096 | } | |
5097 | watchpoint_del_at_next_stop (b); | |
5098 | e = WP_DELETED; | |
5099 | } | |
bf469271 | 5100 | |
18a18393 VP |
5101 | switch (e) |
5102 | { | |
5103 | case WP_DELETED: | |
5104 | /* We've already printed what needs to be printed. */ | |
5105 | bs->print_it = print_it_done; | |
5106 | /* Stop. */ | |
5107 | break; | |
60e1c644 PA |
5108 | case WP_IGNORE: |
5109 | bs->print_it = print_it_noop; | |
5110 | bs->stop = 0; | |
5111 | break; | |
18a18393 | 5112 | case WP_VALUE_CHANGED: |
c1fc2657 | 5113 | if (b->type == bp_read_watchpoint) |
18a18393 | 5114 | { |
85d721b8 PA |
5115 | /* There are two cases to consider here: |
5116 | ||
4a64f543 | 5117 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5118 | In that case, trust the target, and always report |
5119 | the watchpoint hit to the user. Even though | |
5120 | reads don't cause value changes, the value may | |
5121 | have changed since the last time it was read, and | |
5122 | since we're not trapping writes, we will not see | |
5123 | those, and as such we should ignore our notion of | |
5124 | old value. | |
5125 | ||
4a64f543 | 5126 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5127 | reads and writes. There are two ways this may |
5128 | happen: | |
5129 | ||
4a64f543 | 5130 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5131 | reads only, but can break on accesses (reads or |
5132 | writes), such as e.g., x86. We detect this case | |
5133 | at the time we try to insert read watchpoints. | |
5134 | ||
4a64f543 | 5135 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5136 | watchpoints, but, the user set an access or write |
5137 | watchpoint watching the same memory as this read | |
5138 | watchpoint. | |
5139 | ||
5140 | If we're watching memory writes as well as reads, | |
5141 | ignore watchpoint hits when we find that the | |
5142 | value hasn't changed, as reads don't cause | |
5143 | changes. This still gives false positives when | |
5144 | the program writes the same value to memory as | |
5145 | what there was already in memory (we will confuse | |
5146 | it for a read), but it's much better than | |
5147 | nothing. */ | |
5148 | ||
5149 | int other_write_watchpoint = 0; | |
5150 | ||
5151 | if (bl->watchpoint_type == hw_read) | |
5152 | { | |
43892fdf | 5153 | for (breakpoint *other_b : all_breakpoints ()) |
3a5c3e22 PA |
5154 | if (other_b->type == bp_hardware_watchpoint |
5155 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5156 | { |
3a5c3e22 PA |
5157 | struct watchpoint *other_w = |
5158 | (struct watchpoint *) other_b; | |
5159 | ||
5160 | if (other_w->watchpoint_triggered | |
5161 | == watch_triggered_yes) | |
5162 | { | |
5163 | other_write_watchpoint = 1; | |
5164 | break; | |
5165 | } | |
85d721b8 PA |
5166 | } |
5167 | } | |
5168 | ||
5169 | if (other_write_watchpoint | |
5170 | || bl->watchpoint_type == hw_access) | |
5171 | { | |
5172 | /* We're watching the same memory for writes, | |
5173 | and the value changed since the last time we | |
5174 | updated it, so this trap must be for a write. | |
5175 | Ignore it. */ | |
5176 | bs->print_it = print_it_noop; | |
5177 | bs->stop = 0; | |
5178 | } | |
18a18393 VP |
5179 | } |
5180 | break; | |
5181 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5182 | if (b->type == bp_hardware_watchpoint |
5183 | || b->type == bp_watchpoint) | |
18a18393 VP |
5184 | { |
5185 | /* Don't stop: write watchpoints shouldn't fire if | |
5186 | the value hasn't changed. */ | |
5187 | bs->print_it = print_it_noop; | |
5188 | bs->stop = 0; | |
5189 | } | |
5190 | /* Stop. */ | |
5191 | break; | |
5192 | default: | |
5193 | /* Can't happen. */ | |
18a18393 VP |
5194 | break; |
5195 | } | |
5196 | } | |
5197 | else /* must_check_value == 0 */ | |
5198 | { | |
5199 | /* This is a case where some watchpoint(s) triggered, but | |
5200 | not at the address of this watchpoint, or else no | |
5201 | watchpoint triggered after all. So don't print | |
5202 | anything for this watchpoint. */ | |
5203 | bs->print_it = print_it_noop; | |
5204 | bs->stop = 0; | |
5205 | } | |
5206 | } | |
5207 | } | |
5208 | ||
7d4df6a4 DE |
5209 | /* For breakpoints that are currently marked as telling gdb to stop, |
5210 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5211 | of breakpoint referred to by BS. If we should not stop for this |
5212 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5213 | |
18a18393 | 5214 | static void |
00431a78 | 5215 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5216 | { |
2bdf28a0 JK |
5217 | const struct bp_location *bl; |
5218 | struct breakpoint *b; | |
bf469271 PA |
5219 | /* Assume stop. */ |
5220 | bool condition_result = true; | |
7d4df6a4 DE |
5221 | struct expression *cond; |
5222 | ||
5223 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5224 | |
5225 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5226 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5227 | gdb_assert (bl != NULL); |
f431efe5 | 5228 | b = bs->breakpoint_at; |
2bdf28a0 | 5229 | gdb_assert (b != NULL); |
18a18393 | 5230 | |
b775012e LM |
5231 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5232 | need to do so again since GDB does not know if we stopped due to a | |
5233 | breakpoint or a single step breakpoint. */ | |
5234 | ||
18a18393 | 5235 | if (frame_id_p (b->frame_id) |
edb3359d | 5236 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5237 | { |
7d4df6a4 DE |
5238 | bs->stop = 0; |
5239 | return; | |
5240 | } | |
60e1c644 | 5241 | |
12ab52e9 PA |
5242 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5243 | evaluating the condition if this isn't the specified | |
5244 | thread/task. */ | |
00431a78 PA |
5245 | if ((b->thread != -1 && b->thread != thread->global_num) |
5246 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5247 | { |
5248 | bs->stop = 0; | |
5249 | return; | |
5250 | } | |
5251 | ||
6dddc817 DE |
5252 | /* Evaluate extension language breakpoints that have a "stop" method |
5253 | implemented. */ | |
5254 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5255 | |
7d4df6a4 DE |
5256 | if (is_watchpoint (b)) |
5257 | { | |
5258 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5259 | |
4d01a485 | 5260 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5261 | } |
5262 | else | |
4d01a485 | 5263 | cond = bl->cond.get (); |
60e1c644 | 5264 | |
7d4df6a4 DE |
5265 | if (cond && b->disposition != disp_del_at_next_stop) |
5266 | { | |
5267 | int within_current_scope = 1; | |
5268 | struct watchpoint * w; | |
60e1c644 | 5269 | |
7d4df6a4 DE |
5270 | /* We use value_mark and value_free_to_mark because it could |
5271 | be a long time before we return to the command level and | |
5272 | call free_all_values. We can't call free_all_values | |
5273 | because we might be in the middle of evaluating a | |
5274 | function call. */ | |
5275 | struct value *mark = value_mark (); | |
5276 | ||
5277 | if (is_watchpoint (b)) | |
5278 | w = (struct watchpoint *) b; | |
5279 | else | |
5280 | w = NULL; | |
5281 | ||
5282 | /* Need to select the frame, with all that implies so that | |
5283 | the conditions will have the right context. Because we | |
5284 | use the frame, we will not see an inlined function's | |
5285 | variables when we arrive at a breakpoint at the start | |
5286 | of the inlined function; the current frame will be the | |
5287 | call site. */ | |
5288 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5289 | select_frame (get_current_frame ()); | |
5290 | else | |
18a18393 | 5291 | { |
7d4df6a4 DE |
5292 | struct frame_info *frame; |
5293 | ||
5294 | /* For local watchpoint expressions, which particular | |
5295 | instance of a local is being watched matters, so we | |
5296 | keep track of the frame to evaluate the expression | |
5297 | in. To evaluate the condition however, it doesn't | |
5298 | really matter which instantiation of the function | |
5299 | where the condition makes sense triggers the | |
5300 | watchpoint. This allows an expression like "watch | |
5301 | global if q > 10" set in `func', catch writes to | |
5302 | global on all threads that call `func', or catch | |
5303 | writes on all recursive calls of `func' by a single | |
5304 | thread. We simply always evaluate the condition in | |
5305 | the innermost frame that's executing where it makes | |
5306 | sense to evaluate the condition. It seems | |
5307 | intuitive. */ | |
5308 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5309 | if (frame != NULL) | |
5310 | select_frame (frame); | |
5311 | else | |
5312 | within_current_scope = 0; | |
18a18393 | 5313 | } |
7d4df6a4 | 5314 | if (within_current_scope) |
bf469271 | 5315 | { |
a70b8144 | 5316 | try |
bf469271 PA |
5317 | { |
5318 | condition_result = breakpoint_cond_eval (cond); | |
5319 | } | |
230d2906 | 5320 | catch (const gdb_exception &ex) |
bf469271 PA |
5321 | { |
5322 | exception_fprintf (gdb_stderr, ex, | |
5323 | "Error in testing breakpoint condition:\n"); | |
5324 | } | |
bf469271 | 5325 | } |
7d4df6a4 | 5326 | else |
18a18393 | 5327 | { |
7d4df6a4 DE |
5328 | warning (_("Watchpoint condition cannot be tested " |
5329 | "in the current scope")); | |
5330 | /* If we failed to set the right context for this | |
5331 | watchpoint, unconditionally report it. */ | |
18a18393 | 5332 | } |
7d4df6a4 DE |
5333 | /* FIXME-someday, should give breakpoint #. */ |
5334 | value_free_to_mark (mark); | |
18a18393 | 5335 | } |
7d4df6a4 | 5336 | |
bf469271 | 5337 | if (cond && !condition_result) |
7d4df6a4 DE |
5338 | { |
5339 | bs->stop = 0; | |
5340 | } | |
7d4df6a4 DE |
5341 | else if (b->ignore_count > 0) |
5342 | { | |
5343 | b->ignore_count--; | |
5344 | bs->stop = 0; | |
5345 | /* Increase the hit count even though we don't stop. */ | |
5346 | ++(b->hit_count); | |
76727919 | 5347 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5348 | } |
18a18393 VP |
5349 | } |
5350 | ||
1cf4d951 PA |
5351 | /* Returns true if we need to track moribund locations of LOC's type |
5352 | on the current target. */ | |
5353 | ||
5354 | static int | |
5355 | need_moribund_for_location_type (struct bp_location *loc) | |
5356 | { | |
5357 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5358 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5359 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5360 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5361 | } | |
5362 | ||
ddfe970e | 5363 | /* See breakpoint.h. */ |
c906108c SS |
5364 | |
5365 | bpstat | |
ddfe970e | 5366 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5367 | const struct target_waitstatus *ws) |
c906108c | 5368 | { |
5760d0ab | 5369 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5370 | |
43892fdf | 5371 | for (breakpoint *b : all_breakpoints ()) |
429374b8 | 5372 | { |
1a853c52 | 5373 | if (!breakpoint_enabled (b)) |
429374b8 | 5374 | continue; |
a5606eee | 5375 | |
40cb8ca5 | 5376 | for (bp_location *bl : b->locations ()) |
429374b8 | 5377 | { |
4a64f543 MS |
5378 | /* For hardware watchpoints, we look only at the first |
5379 | location. The watchpoint_check function will work on the | |
5380 | entire expression, not the individual locations. For | |
5381 | read watchpoints, the watchpoints_triggered function has | |
5382 | checked all locations already. */ | |
429374b8 JK |
5383 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5384 | break; | |
18a18393 | 5385 | |
b5fa468f | 5386 | if (!bl->enabled || bl->disabled_by_cond || bl->shlib_disabled) |
429374b8 | 5387 | continue; |
c5aa993b | 5388 | |
09ac7c10 | 5389 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5390 | continue; |
c5aa993b | 5391 | |
4a64f543 MS |
5392 | /* Come here if it's a watchpoint, or if the break address |
5393 | matches. */ | |
c5aa993b | 5394 | |
ddfe970e KS |
5395 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5396 | explain stop. */ | |
c5aa993b | 5397 | |
f431efe5 PA |
5398 | /* Assume we stop. Should we find a watchpoint that is not |
5399 | actually triggered, or if the condition of the breakpoint | |
5400 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5401 | bs->stop = 1; |
5402 | bs->print = 1; | |
d983da9c | 5403 | |
f431efe5 PA |
5404 | /* If this is a scope breakpoint, mark the associated |
5405 | watchpoint as triggered so that we will handle the | |
5406 | out-of-scope event. We'll get to the watchpoint next | |
5407 | iteration. */ | |
d0fb5eae | 5408 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5409 | { |
5410 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5411 | ||
5412 | w->watchpoint_triggered = watch_triggered_yes; | |
5413 | } | |
f431efe5 PA |
5414 | } |
5415 | } | |
5416 | ||
7c16b83e | 5417 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5418 | if (!target_supports_stopped_by_sw_breakpoint () |
5419 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5420 | { |
1123588c | 5421 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5422 | { |
1cf4d951 PA |
5423 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5424 | && need_moribund_for_location_type (loc)) | |
5425 | { | |
ddfe970e | 5426 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5427 | /* For hits of moribund locations, we should just proceed. */ |
5428 | bs->stop = 0; | |
5429 | bs->print = 0; | |
5430 | bs->print_it = print_it_noop; | |
5431 | } | |
f431efe5 PA |
5432 | } |
5433 | } | |
5434 | ||
ddfe970e KS |
5435 | return bs_head; |
5436 | } | |
5437 | ||
5438 | /* See breakpoint.h. */ | |
5439 | ||
5440 | bpstat | |
5441 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5442 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5443 | const struct target_waitstatus *ws, |
5444 | bpstat stop_chain) | |
5445 | { | |
5446 | struct breakpoint *b = NULL; | |
5447 | /* First item of allocated bpstat's. */ | |
5448 | bpstat bs_head = stop_chain; | |
5449 | bpstat bs; | |
5450 | int need_remove_insert; | |
5451 | int removed_any; | |
5452 | ||
5453 | /* First, build the bpstat chain with locations that explain a | |
5454 | target stop, while being careful to not set the target running, | |
5455 | as that may invalidate locations (in particular watchpoint | |
5456 | locations are recreated). Resuming will happen here with | |
5457 | breakpoint conditions or watchpoint expressions that include | |
5458 | inferior function calls. */ | |
5459 | if (bs_head == NULL) | |
5460 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5461 | ||
edcc5120 TT |
5462 | /* A bit of special processing for shlib breakpoints. We need to |
5463 | process solib loading here, so that the lists of loaded and | |
5464 | unloaded libraries are correct before we handle "catch load" and | |
5465 | "catch unload". */ | |
5466 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5467 | { | |
5d268276 | 5468 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5469 | { |
5470 | handle_solib_event (); | |
5471 | break; | |
5472 | } | |
5473 | } | |
5474 | ||
f431efe5 PA |
5475 | /* Now go through the locations that caused the target to stop, and |
5476 | check whether we're interested in reporting this stop to higher | |
5477 | layers, or whether we should resume the target transparently. */ | |
5478 | ||
5479 | removed_any = 0; | |
5480 | ||
5760d0ab | 5481 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5482 | { |
5483 | if (!bs->stop) | |
5484 | continue; | |
5485 | ||
f431efe5 | 5486 | b = bs->breakpoint_at; |
348d480f PA |
5487 | b->ops->check_status (bs); |
5488 | if (bs->stop) | |
28010a5d | 5489 | { |
00431a78 | 5490 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5491 | |
429374b8 JK |
5492 | if (bs->stop) |
5493 | { | |
5494 | ++(b->hit_count); | |
76727919 | 5495 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5496 | |
4a64f543 | 5497 | /* We will stop here. */ |
429374b8 JK |
5498 | if (b->disposition == disp_disable) |
5499 | { | |
816338b5 | 5500 | --(b->enable_count); |
1a853c52 | 5501 | if (b->enable_count <= 0) |
429374b8 | 5502 | b->enable_state = bp_disabled; |
f431efe5 | 5503 | removed_any = 1; |
429374b8 JK |
5504 | } |
5505 | if (b->silent) | |
5506 | bs->print = 0; | |
5507 | bs->commands = b->commands; | |
abf85f46 | 5508 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5509 | ? bs->commands.get () : NULL)) |
abf85f46 | 5510 | bs->print = 0; |
9d6e6e84 HZ |
5511 | |
5512 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5513 | } |
5514 | ||
348d480f | 5515 | } |
a9b3a50f PA |
5516 | |
5517 | /* Print nothing for this entry if we don't stop or don't | |
5518 | print. */ | |
5519 | if (!bs->stop || !bs->print) | |
5520 | bs->print_it = print_it_noop; | |
429374b8 | 5521 | } |
876fa593 | 5522 | |
d983da9c DJ |
5523 | /* If we aren't stopping, the value of some hardware watchpoint may |
5524 | not have changed, but the intermediate memory locations we are | |
5525 | watching may have. Don't bother if we're stopping; this will get | |
5526 | done later. */ | |
d832cb68 | 5527 | need_remove_insert = 0; |
5760d0ab JK |
5528 | if (! bpstat_causes_stop (bs_head)) |
5529 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5530 | if (!bs->stop |
f431efe5 PA |
5531 | && bs->breakpoint_at |
5532 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5533 | { |
3a5c3e22 PA |
5534 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5535 | ||
5536 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5537 | need_remove_insert = 1; |
d983da9c DJ |
5538 | } |
5539 | ||
d832cb68 | 5540 | if (need_remove_insert) |
44702360 | 5541 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5542 | else if (removed_any) |
44702360 | 5543 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5544 | |
5760d0ab | 5545 | return bs_head; |
c906108c | 5546 | } |
628fe4e4 JK |
5547 | |
5548 | static void | |
61c26be8 | 5549 | handle_jit_event (CORE_ADDR address) |
628fe4e4 | 5550 | { |
628fe4e4 JK |
5551 | struct gdbarch *gdbarch; |
5552 | ||
1eb8556f | 5553 | infrun_debug_printf ("handling bp_jit_event"); |
243a9253 | 5554 | |
628fe4e4 JK |
5555 | /* Switch terminal for any messages produced by |
5556 | breakpoint_re_set. */ | |
223ffa71 | 5557 | target_terminal::ours_for_output (); |
628fe4e4 | 5558 | |
61c26be8 MS |
5559 | gdbarch = get_frame_arch (get_current_frame ()); |
5560 | /* This event is caused by a breakpoint set in `jit_breakpoint_re_set`, | |
5561 | thus it is expected that its objectfile can be found through | |
5562 | minimal symbol lookup. If it doesn't work (and assert fails), it | |
5563 | most likely means that `jit_breakpoint_re_set` was changes and this | |
5564 | function needs to be updated too. */ | |
5565 | bound_minimal_symbol jit_bp_sym = lookup_minimal_symbol_by_pc (address); | |
5566 | gdb_assert (jit_bp_sym.objfile != nullptr); | |
5567 | jit_event_handler (gdbarch, jit_bp_sym.objfile); | |
628fe4e4 | 5568 | |
223ffa71 | 5569 | target_terminal::inferior (); |
628fe4e4 JK |
5570 | } |
5571 | ||
5572 | /* Prepare WHAT final decision for infrun. */ | |
5573 | ||
5574 | /* Decide what infrun needs to do with this bpstat. */ | |
5575 | ||
c906108c | 5576 | struct bpstat_what |
0e30163f | 5577 | bpstat_what (bpstat bs_head) |
c906108c | 5578 | { |
c906108c | 5579 | struct bpstat_what retval; |
0e30163f | 5580 | bpstat bs; |
c906108c | 5581 | |
628fe4e4 | 5582 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5583 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5584 | retval.is_longjmp = false; |
628fe4e4 | 5585 | |
0e30163f | 5586 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5587 | { |
628fe4e4 JK |
5588 | /* Extract this BS's action. After processing each BS, we check |
5589 | if its action overrides all we've seem so far. */ | |
5590 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5591 | enum bptype bptype; | |
5592 | ||
c906108c | 5593 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5594 | { |
5595 | /* I suspect this can happen if it was a momentary | |
5596 | breakpoint which has since been deleted. */ | |
5597 | bptype = bp_none; | |
5598 | } | |
20874c92 | 5599 | else |
f431efe5 | 5600 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5601 | |
5602 | switch (bptype) | |
c906108c SS |
5603 | { |
5604 | case bp_none: | |
628fe4e4 | 5605 | break; |
c906108c SS |
5606 | case bp_breakpoint: |
5607 | case bp_hardware_breakpoint: | |
7c16b83e | 5608 | case bp_single_step: |
c906108c SS |
5609 | case bp_until: |
5610 | case bp_finish: | |
a9b3a50f | 5611 | case bp_shlib_event: |
c906108c SS |
5612 | if (bs->stop) |
5613 | { | |
5614 | if (bs->print) | |
628fe4e4 | 5615 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5616 | else |
628fe4e4 | 5617 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5618 | } |
5619 | else | |
628fe4e4 | 5620 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5621 | break; |
5622 | case bp_watchpoint: | |
5623 | case bp_hardware_watchpoint: | |
5624 | case bp_read_watchpoint: | |
5625 | case bp_access_watchpoint: | |
5626 | if (bs->stop) | |
5627 | { | |
5628 | if (bs->print) | |
628fe4e4 | 5629 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5630 | else |
628fe4e4 | 5631 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5632 | } |
5633 | else | |
628fe4e4 JK |
5634 | { |
5635 | /* There was a watchpoint, but we're not stopping. | |
5636 | This requires no further action. */ | |
5637 | } | |
c906108c SS |
5638 | break; |
5639 | case bp_longjmp: | |
e2e4d78b | 5640 | case bp_longjmp_call_dummy: |
186c406b | 5641 | case bp_exception: |
0a39bb32 PA |
5642 | if (bs->stop) |
5643 | { | |
5644 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5645 | retval.is_longjmp = bptype != bp_exception; | |
5646 | } | |
5647 | else | |
5648 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5649 | break; |
5650 | case bp_longjmp_resume: | |
186c406b | 5651 | case bp_exception_resume: |
0a39bb32 PA |
5652 | if (bs->stop) |
5653 | { | |
5654 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5655 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5656 | } | |
5657 | else | |
5658 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5659 | break; |
5660 | case bp_step_resume: | |
5661 | if (bs->stop) | |
628fe4e4 JK |
5662 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5663 | else | |
c906108c | 5664 | { |
628fe4e4 JK |
5665 | /* It is for the wrong frame. */ |
5666 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5667 | } |
c906108c | 5668 | break; |
2c03e5be PA |
5669 | case bp_hp_step_resume: |
5670 | if (bs->stop) | |
5671 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5672 | else | |
5673 | { | |
5674 | /* It is for the wrong frame. */ | |
5675 | this_action = BPSTAT_WHAT_SINGLE; | |
5676 | } | |
5677 | break; | |
c906108c | 5678 | case bp_watchpoint_scope: |
c4093a6a | 5679 | case bp_thread_event: |
1900040c | 5680 | case bp_overlay_event: |
0fd8e87f | 5681 | case bp_longjmp_master: |
aa7d318d | 5682 | case bp_std_terminate_master: |
186c406b | 5683 | case bp_exception_master: |
628fe4e4 | 5684 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5685 | break; |
ce78b96d | 5686 | case bp_catchpoint: |
c5aa993b JM |
5687 | if (bs->stop) |
5688 | { | |
5689 | if (bs->print) | |
628fe4e4 | 5690 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5691 | else |
628fe4e4 | 5692 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5693 | } |
5694 | else | |
628fe4e4 | 5695 | { |
cb1e4e32 PA |
5696 | /* Some catchpoints are implemented with breakpoints. |
5697 | For those, we need to step over the breakpoint. */ | |
5698 | if (bs->bp_location_at->loc_type != bp_loc_other) | |
5699 | this_action = BPSTAT_WHAT_SINGLE; | |
628fe4e4 JK |
5700 | } |
5701 | break; | |
628fe4e4 | 5702 | case bp_jit_event: |
628fe4e4 | 5703 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5704 | break; |
c906108c | 5705 | case bp_call_dummy: |
53a5351d JM |
5706 | /* Make sure the action is stop (silent or noisy), |
5707 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5708 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5709 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5710 | break; |
5711 | case bp_std_terminate: | |
5712 | /* Make sure the action is stop (silent or noisy), | |
5713 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5714 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5715 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5716 | break; |
1042e4c0 | 5717 | case bp_tracepoint: |
7a697b8d | 5718 | case bp_fast_tracepoint: |
0fb4aa4b | 5719 | case bp_static_tracepoint: |
1042e4c0 SS |
5720 | /* Tracepoint hits should not be reported back to GDB, and |
5721 | if one got through somehow, it should have been filtered | |
5722 | out already. */ | |
5723 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5724 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5725 | break; |
5726 | case bp_gnu_ifunc_resolver: | |
5727 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5728 | this_action = BPSTAT_WHAT_SINGLE; | |
5729 | break; | |
5730 | case bp_gnu_ifunc_resolver_return: | |
5731 | /* The breakpoint will be removed, execution will restart from the | |
5732 | PC of the former breakpoint. */ | |
5733 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5734 | break; | |
e7e0cddf SS |
5735 | |
5736 | case bp_dprintf: | |
a11cfd87 HZ |
5737 | if (bs->stop) |
5738 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5739 | else | |
5740 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5741 | break; |
5742 | ||
628fe4e4 JK |
5743 | default: |
5744 | internal_error (__FILE__, __LINE__, | |
5745 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5746 | } |
628fe4e4 | 5747 | |
325fac50 | 5748 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5749 | } |
628fe4e4 | 5750 | |
243a9253 PA |
5751 | return retval; |
5752 | } | |
628fe4e4 | 5753 | |
243a9253 PA |
5754 | void |
5755 | bpstat_run_callbacks (bpstat bs_head) | |
5756 | { | |
5757 | bpstat bs; | |
628fe4e4 | 5758 | |
0e30163f JK |
5759 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5760 | { | |
5761 | struct breakpoint *b = bs->breakpoint_at; | |
5762 | ||
5763 | if (b == NULL) | |
5764 | continue; | |
5765 | switch (b->type) | |
5766 | { | |
243a9253 | 5767 | case bp_jit_event: |
61c26be8 | 5768 | handle_jit_event (bs->bp_location_at->address); |
243a9253 | 5769 | break; |
0e30163f JK |
5770 | case bp_gnu_ifunc_resolver: |
5771 | gnu_ifunc_resolver_stop (b); | |
5772 | break; | |
5773 | case bp_gnu_ifunc_resolver_return: | |
5774 | gnu_ifunc_resolver_return_stop (b); | |
5775 | break; | |
5776 | } | |
5777 | } | |
c906108c SS |
5778 | } |
5779 | ||
4c462cb0 | 5780 | /* See breakpoint.h. */ |
c906108c | 5781 | |
4c462cb0 SM |
5782 | bool |
5783 | bpstat_should_step () | |
c906108c | 5784 | { |
43892fdf | 5785 | for (breakpoint *b : all_breakpoints ()) |
717a8278 | 5786 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 | 5787 | return true; |
43892fdf | 5788 | |
4c462cb0 | 5789 | return false; |
c906108c SS |
5790 | } |
5791 | ||
4c462cb0 SM |
5792 | /* See breakpoint.h. */ |
5793 | ||
5794 | bool | |
67822962 PA |
5795 | bpstat_causes_stop (bpstat bs) |
5796 | { | |
5797 | for (; bs != NULL; bs = bs->next) | |
5798 | if (bs->stop) | |
4c462cb0 | 5799 | return true; |
67822962 | 5800 | |
4c462cb0 | 5801 | return false; |
67822962 PA |
5802 | } |
5803 | ||
c906108c | 5804 | \f |
c5aa993b | 5805 | |
170b53b2 UW |
5806 | /* Compute a string of spaces suitable to indent the next line |
5807 | so it starts at the position corresponding to the table column | |
5808 | named COL_NAME in the currently active table of UIOUT. */ | |
5809 | ||
5810 | static char * | |
5811 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5812 | { | |
5813 | static char wrap_indent[80]; | |
5814 | int i, total_width, width, align; | |
c5209615 | 5815 | const char *text; |
170b53b2 UW |
5816 | |
5817 | total_width = 0; | |
112e8700 | 5818 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5819 | { |
5820 | if (strcmp (text, col_name) == 0) | |
5821 | { | |
5822 | gdb_assert (total_width < sizeof wrap_indent); | |
5823 | memset (wrap_indent, ' ', total_width); | |
5824 | wrap_indent[total_width] = 0; | |
5825 | ||
5826 | return wrap_indent; | |
5827 | } | |
5828 | ||
5829 | total_width += width + 1; | |
5830 | } | |
5831 | ||
5832 | return NULL; | |
5833 | } | |
5834 | ||
b775012e LM |
5835 | /* Determine if the locations of this breakpoint will have their conditions |
5836 | evaluated by the target, host or a mix of both. Returns the following: | |
5837 | ||
5838 | "host": Host evals condition. | |
5839 | "host or target": Host or Target evals condition. | |
5840 | "target": Target evals condition. | |
5841 | */ | |
5842 | ||
5843 | static const char * | |
5844 | bp_condition_evaluator (struct breakpoint *b) | |
5845 | { | |
b775012e LM |
5846 | char host_evals = 0; |
5847 | char target_evals = 0; | |
5848 | ||
5849 | if (!b) | |
5850 | return NULL; | |
5851 | ||
5852 | if (!is_breakpoint (b)) | |
5853 | return NULL; | |
5854 | ||
5855 | if (gdb_evaluates_breakpoint_condition_p () | |
5856 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5857 | return condition_evaluation_host; | |
5858 | ||
40cb8ca5 | 5859 | for (bp_location *bl : b->locations ()) |
b775012e LM |
5860 | { |
5861 | if (bl->cond_bytecode) | |
5862 | target_evals++; | |
5863 | else | |
5864 | host_evals++; | |
5865 | } | |
5866 | ||
5867 | if (host_evals && target_evals) | |
5868 | return condition_evaluation_both; | |
5869 | else if (target_evals) | |
5870 | return condition_evaluation_target; | |
5871 | else | |
5872 | return condition_evaluation_host; | |
5873 | } | |
5874 | ||
5875 | /* Determine the breakpoint location's condition evaluator. This is | |
5876 | similar to bp_condition_evaluator, but for locations. */ | |
5877 | ||
5878 | static const char * | |
5879 | bp_location_condition_evaluator (struct bp_location *bl) | |
5880 | { | |
5881 | if (bl && !is_breakpoint (bl->owner)) | |
5882 | return NULL; | |
5883 | ||
5884 | if (gdb_evaluates_breakpoint_condition_p () | |
5885 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5886 | return condition_evaluation_host; | |
5887 | ||
5888 | if (bl && bl->cond_bytecode) | |
5889 | return condition_evaluation_target; | |
5890 | else | |
5891 | return condition_evaluation_host; | |
5892 | } | |
5893 | ||
859825b8 JK |
5894 | /* Print the LOC location out of the list of B->LOC locations. */ |
5895 | ||
170b53b2 UW |
5896 | static void |
5897 | print_breakpoint_location (struct breakpoint *b, | |
5898 | struct bp_location *loc) | |
0d381245 | 5899 | { |
79a45e25 | 5900 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5901 | |
5902 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5903 | |
859825b8 JK |
5904 | if (loc != NULL && loc->shlib_disabled) |
5905 | loc = NULL; | |
5906 | ||
6c95b8df PA |
5907 | if (loc != NULL) |
5908 | set_current_program_space (loc->pspace); | |
5909 | ||
56435ebe | 5910 | if (b->display_canonical) |
d28cd78a | 5911 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5912 | else if (loc && loc->symtab) |
0d381245 | 5913 | { |
4a27f119 KS |
5914 | const struct symbol *sym = loc->symbol; |
5915 | ||
0d381245 VP |
5916 | if (sym) |
5917 | { | |
112e8700 | 5918 | uiout->text ("in "); |
987012b8 | 5919 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 5920 | function_name_style.style ()); |
112e8700 SM |
5921 | uiout->text (" "); |
5922 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5923 | uiout->text ("at "); | |
0d381245 | 5924 | } |
112e8700 | 5925 | uiout->field_string ("file", |
cbe56571 | 5926 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 5927 | file_name_style.style ()); |
112e8700 | 5928 | uiout->text (":"); |
05cba821 | 5929 | |
112e8700 SM |
5930 | if (uiout->is_mi_like_p ()) |
5931 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5932 | |
381befee | 5933 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 5934 | } |
859825b8 | 5935 | else if (loc) |
0d381245 | 5936 | { |
d7e74731 | 5937 | string_file stb; |
170b53b2 | 5938 | |
d7e74731 | 5939 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5940 | demangle, ""); |
112e8700 | 5941 | uiout->field_stream ("at", stb); |
0d381245 | 5942 | } |
859825b8 | 5943 | else |
f00aae0f | 5944 | { |
d28cd78a TT |
5945 | uiout->field_string ("pending", |
5946 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5947 | /* If extra_string is available, it could be holding a condition |
5948 | or dprintf arguments. In either case, make sure it is printed, | |
5949 | too, but only for non-MI streams. */ | |
112e8700 | 5950 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5951 | { |
5952 | if (b->type == bp_dprintf) | |
112e8700 | 5953 | uiout->text (","); |
f00aae0f | 5954 | else |
112e8700 SM |
5955 | uiout->text (" "); |
5956 | uiout->text (b->extra_string); | |
f00aae0f KS |
5957 | } |
5958 | } | |
6c95b8df | 5959 | |
b775012e LM |
5960 | if (loc && is_breakpoint (b) |
5961 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5962 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5963 | { | |
112e8700 SM |
5964 | uiout->text (" ("); |
5965 | uiout->field_string ("evaluated-by", | |
b775012e | 5966 | bp_location_condition_evaluator (loc)); |
112e8700 | 5967 | uiout->text (")"); |
b775012e | 5968 | } |
0d381245 VP |
5969 | } |
5970 | ||
269b11a2 PA |
5971 | static const char * |
5972 | bptype_string (enum bptype type) | |
c906108c | 5973 | { |
c4093a6a JM |
5974 | struct ep_type_description |
5975 | { | |
5976 | enum bptype type; | |
a121b7c1 | 5977 | const char *description; |
c4093a6a JM |
5978 | }; |
5979 | static struct ep_type_description bptypes[] = | |
c906108c | 5980 | { |
c5aa993b JM |
5981 | {bp_none, "?deleted?"}, |
5982 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5983 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5984 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5985 | {bp_until, "until"}, |
5986 | {bp_finish, "finish"}, | |
5987 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5988 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5989 | {bp_read_watchpoint, "read watchpoint"}, |
5990 | {bp_access_watchpoint, "acc watchpoint"}, | |
5991 | {bp_longjmp, "longjmp"}, | |
5992 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5993 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5994 | {bp_exception, "exception"}, |
5995 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5996 | {bp_step_resume, "step resume"}, |
2c03e5be | 5997 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5998 | {bp_watchpoint_scope, "watchpoint scope"}, |
5999 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6000 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6001 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6002 | {bp_thread_event, "thread events"}, |
1900040c | 6003 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6004 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6005 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6006 | {bp_exception_master, "exception master"}, |
ce78b96d | 6007 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6008 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6009 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6010 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6011 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6012 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6013 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6014 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6015 | }; |
269b11a2 PA |
6016 | |
6017 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6018 | || ((int) type != bptypes[(int) type].type)) | |
6019 | internal_error (__FILE__, __LINE__, | |
6020 | _("bptypes table does not describe type #%d."), | |
6021 | (int) type); | |
6022 | ||
6023 | return bptypes[(int) type].description; | |
6024 | } | |
6025 | ||
998580f1 MK |
6026 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6027 | For CLI, prefix the list with the string 'inf'. */ | |
6028 | ||
6029 | static void | |
6030 | output_thread_groups (struct ui_out *uiout, | |
6031 | const char *field_name, | |
5c632425 | 6032 | const std::vector<int> &inf_nums, |
998580f1 MK |
6033 | int mi_only) |
6034 | { | |
112e8700 | 6035 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6036 | |
6037 | /* For backward compatibility, don't display inferiors in CLI unless | |
6038 | there are several. Always display them for MI. */ | |
6039 | if (!is_mi && mi_only) | |
6040 | return; | |
6041 | ||
10f489e5 | 6042 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6043 | |
5c632425 | 6044 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6045 | { |
6046 | if (is_mi) | |
6047 | { | |
6048 | char mi_group[10]; | |
6049 | ||
5c632425 | 6050 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6051 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6052 | } |
6053 | else | |
6054 | { | |
6055 | if (i == 0) | |
112e8700 | 6056 | uiout->text (" inf "); |
998580f1 | 6057 | else |
112e8700 | 6058 | uiout->text (", "); |
998580f1 | 6059 | |
5c632425 | 6060 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6061 | } |
6062 | } | |
998580f1 MK |
6063 | } |
6064 | ||
a38118e5 PA |
6065 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6066 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6067 | info breakpoints" show the software breakpoint locations of | |
6068 | catchpoints, which are considered internal implementation | |
6069 | detail. */ | |
269b11a2 PA |
6070 | |
6071 | static void | |
6072 | print_one_breakpoint_location (struct breakpoint *b, | |
6073 | struct bp_location *loc, | |
6074 | int loc_number, | |
6075 | struct bp_location **last_loc, | |
a38118e5 | 6076 | int allflag, bool raw_loc) |
269b11a2 PA |
6077 | { |
6078 | struct command_line *l; | |
c2c6d25f | 6079 | static char bpenables[] = "nynny"; |
c906108c | 6080 | |
79a45e25 | 6081 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6082 | int header_of_multiple = 0; |
6083 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6084 | struct value_print_options opts; |
6085 | ||
6086 | get_user_print_options (&opts); | |
0d381245 VP |
6087 | |
6088 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6089 | /* See comment in print_one_breakpoint concerning treatment of |
6090 | breakpoints with single disabled location. */ | |
0d381245 VP |
6091 | if (loc == NULL |
6092 | && (b->loc != NULL | |
b5fa468f TBA |
6093 | && (b->loc->next != NULL |
6094 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
0d381245 VP |
6095 | header_of_multiple = 1; |
6096 | if (loc == NULL) | |
6097 | loc = b->loc; | |
6098 | ||
c4093a6a JM |
6099 | annotate_record (); |
6100 | ||
6101 | /* 1 */ | |
6102 | annotate_field (0); | |
0d381245 | 6103 | if (part_of_multiple) |
528e1572 | 6104 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6105 | else |
381befee | 6106 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6107 | |
6108 | /* 2 */ | |
6109 | annotate_field (1); | |
0d381245 | 6110 | if (part_of_multiple) |
112e8700 | 6111 | uiout->field_skip ("type"); |
269b11a2 | 6112 | else |
112e8700 | 6113 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6114 | |
6115 | /* 3 */ | |
6116 | annotate_field (2); | |
0d381245 | 6117 | if (part_of_multiple) |
112e8700 | 6118 | uiout->field_skip ("disp"); |
0d381245 | 6119 | else |
112e8700 | 6120 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6121 | |
c4093a6a JM |
6122 | /* 4 */ |
6123 | annotate_field (3); | |
85c88e2a TBA |
6124 | /* For locations that are disabled because of an invalid condition, |
6125 | display "N*" on CLI, where "*" refers to a footnote below the | |
6126 | table. For MI, simply display a "N" without a footnote. */ | |
6127 | const char *N = (uiout->is_mi_like_p ()) ? "N" : "N*"; | |
0d381245 | 6128 | if (part_of_multiple) |
85c88e2a | 6129 | uiout->field_string ("enabled", (loc->disabled_by_cond ? N |
b5fa468f | 6130 | : (loc->enabled ? "y" : "n"))); |
0d381245 | 6131 | else |
112e8700 | 6132 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6133 | |
c4093a6a | 6134 | /* 5 and 6 */ |
a38118e5 | 6135 | if (!raw_loc && b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6136 | b->ops->print_one (b, last_loc); |
3086aeae | 6137 | else |
a38118e5 PA |
6138 | { |
6139 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6140 | { |
6141 | struct watchpoint *w = (struct watchpoint *) b; | |
6142 | ||
6143 | /* Field 4, the address, is omitted (which makes the columns | |
6144 | not line up too nicely with the headers, but the effect | |
6145 | is relatively readable). */ | |
6146 | if (opts.addressprint) | |
112e8700 | 6147 | uiout->field_skip ("addr"); |
3a5c3e22 | 6148 | annotate_field (5); |
112e8700 | 6149 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6150 | } |
f06f1252 TT |
6151 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6152 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6153 | { |
6154 | if (opts.addressprint) | |
6155 | { | |
6156 | annotate_field (4); | |
6157 | if (header_of_multiple) | |
7f6aba03 TT |
6158 | uiout->field_string ("addr", "<MULTIPLE>", |
6159 | metadata_style.style ()); | |
a38118e5 | 6160 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6161 | uiout->field_string ("addr", "<PENDING>", |
6162 | metadata_style.style ()); | |
a38118e5 PA |
6163 | else |
6164 | uiout->field_core_addr ("addr", | |
6165 | loc->gdbarch, loc->address); | |
6166 | } | |
6167 | annotate_field (5); | |
6168 | if (!header_of_multiple) | |
6169 | print_breakpoint_location (b, loc); | |
6170 | if (b->loc) | |
6171 | *last_loc = b->loc; | |
6172 | } | |
6173 | } | |
6c95b8df | 6174 | |
998580f1 | 6175 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6176 | { |
5c632425 | 6177 | std::vector<int> inf_nums; |
998580f1 | 6178 | int mi_only = 1; |
6c95b8df | 6179 | |
08036331 | 6180 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6181 | { |
6182 | if (inf->pspace == loc->pspace) | |
5c632425 | 6183 | inf_nums.push_back (inf->num); |
6c95b8df | 6184 | } |
998580f1 | 6185 | |
dda83cd7 | 6186 | /* For backward compatibility, don't display inferiors in CLI unless |
998580f1 MK |
6187 | there are several. Always display for MI. */ |
6188 | if (allflag | |
6189 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6190 | && (program_spaces.size () > 1 |
998580f1 MK |
6191 | || number_of_inferiors () > 1) |
6192 | /* LOC is for existing B, it cannot be in | |
6193 | moribund_locations and thus having NULL OWNER. */ | |
6194 | && loc->owner->type != bp_catchpoint)) | |
6195 | mi_only = 0; | |
5c632425 | 6196 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6197 | } |
6198 | ||
4a306c9a | 6199 | if (!part_of_multiple) |
c4093a6a | 6200 | { |
4a306c9a JB |
6201 | if (b->thread != -1) |
6202 | { | |
6203 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6204 | "stop only in" line a little further down. */ |
112e8700 | 6205 | uiout->text (" thread "); |
381befee | 6206 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6207 | } |
6208 | else if (b->task != 0) | |
6209 | { | |
112e8700 | 6210 | uiout->text (" task "); |
381befee | 6211 | uiout->field_signed ("task", b->task); |
4a306c9a | 6212 | } |
c4093a6a | 6213 | } |
f1310107 | 6214 | |
112e8700 | 6215 | uiout->text ("\n"); |
f1310107 | 6216 | |
348d480f | 6217 | if (!part_of_multiple) |
f1310107 TJB |
6218 | b->ops->print_one_detail (b, uiout); |
6219 | ||
0d381245 | 6220 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6221 | { |
6222 | annotate_field (6); | |
112e8700 | 6223 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6224 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6225 | the frame ID. */ |
112e8700 | 6226 | uiout->field_core_addr ("frame", |
5af949e3 | 6227 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6228 | uiout->text ("\n"); |
c4093a6a JM |
6229 | } |
6230 | ||
28010a5d | 6231 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6232 | { |
6233 | annotate_field (7); | |
d77f58be | 6234 | if (is_tracepoint (b)) |
112e8700 | 6235 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6236 | else |
112e8700 SM |
6237 | uiout->text ("\tstop only if "); |
6238 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6239 | |
6240 | /* Print whether the target is doing the breakpoint's condition | |
6241 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6242 | if (is_breakpoint (b) | |
6243 | && breakpoint_condition_evaluation_mode () | |
6244 | == condition_evaluation_target) | |
6245 | { | |
6a831f06 PA |
6246 | uiout->message (" (%pF evals)", |
6247 | string_field ("evaluated-by", | |
6248 | bp_condition_evaluator (b))); | |
b775012e | 6249 | } |
112e8700 | 6250 | uiout->text ("\n"); |
0101ce28 JJ |
6251 | } |
6252 | ||
0d381245 | 6253 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6254 | { |
4a64f543 | 6255 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6256 | uiout->text ("\tstop only in thread "); |
6257 | if (uiout->is_mi_like_p ()) | |
381befee | 6258 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6259 | else |
6260 | { | |
6261 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6262 | ||
112e8700 | 6263 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6264 | } |
112e8700 | 6265 | uiout->text ("\n"); |
c4093a6a JM |
6266 | } |
6267 | ||
556ec64d YQ |
6268 | if (!part_of_multiple) |
6269 | { | |
6270 | if (b->hit_count) | |
31f56a27 YQ |
6271 | { |
6272 | /* FIXME should make an annotation for this. */ | |
6273 | if (is_catchpoint (b)) | |
112e8700 | 6274 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6275 | else if (is_tracepoint (b)) |
112e8700 | 6276 | uiout->text ("\ttracepoint"); |
31f56a27 | 6277 | else |
112e8700 SM |
6278 | uiout->text ("\tbreakpoint"); |
6279 | uiout->text (" already hit "); | |
381befee | 6280 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6281 | if (b->hit_count == 1) |
112e8700 | 6282 | uiout->text (" time\n"); |
31f56a27 | 6283 | else |
112e8700 | 6284 | uiout->text (" times\n"); |
31f56a27 | 6285 | } |
556ec64d YQ |
6286 | else |
6287 | { | |
31f56a27 | 6288 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6289 | if (uiout->is_mi_like_p ()) |
381befee | 6290 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6291 | } |
6292 | } | |
8b93c638 | 6293 | |
0d381245 | 6294 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6295 | { |
6296 | annotate_field (8); | |
6a831f06 PA |
6297 | uiout->message ("\tignore next %pF hits\n", |
6298 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6299 | } |
059fb39f | 6300 | |
816338b5 SS |
6301 | /* Note that an enable count of 1 corresponds to "enable once" |
6302 | behavior, which is reported by the combination of enablement and | |
6303 | disposition, so we don't need to mention it here. */ | |
6304 | if (!part_of_multiple && b->enable_count > 1) | |
6305 | { | |
6306 | annotate_field (8); | |
112e8700 | 6307 | uiout->text ("\tdisable after "); |
816338b5 SS |
6308 | /* Tweak the wording to clarify that ignore and enable counts |
6309 | are distinct, and have additive effect. */ | |
6310 | if (b->ignore_count) | |
112e8700 | 6311 | uiout->text ("additional "); |
816338b5 | 6312 | else |
112e8700 | 6313 | uiout->text ("next "); |
381befee | 6314 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6315 | uiout->text (" hits\n"); |
816338b5 SS |
6316 | } |
6317 | ||
f196051f SS |
6318 | if (!part_of_multiple && is_tracepoint (b)) |
6319 | { | |
6320 | struct tracepoint *tp = (struct tracepoint *) b; | |
6321 | ||
6322 | if (tp->traceframe_usage) | |
6323 | { | |
112e8700 | 6324 | uiout->text ("\ttrace buffer usage "); |
381befee | 6325 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6326 | uiout->text (" bytes\n"); |
f196051f SS |
6327 | } |
6328 | } | |
d3ce09f5 | 6329 | |
d1b0a7bf | 6330 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6331 | if (!part_of_multiple && l) |
c4093a6a JM |
6332 | { |
6333 | annotate_field (9); | |
2e783024 | 6334 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6335 | print_command_lines (uiout, l, 4); |
c4093a6a | 6336 | } |
d24317b4 | 6337 | |
d9b3f62e | 6338 | if (is_tracepoint (b)) |
1042e4c0 | 6339 | { |
d9b3f62e PA |
6340 | struct tracepoint *t = (struct tracepoint *) b; |
6341 | ||
6342 | if (!part_of_multiple && t->pass_count) | |
6343 | { | |
6344 | annotate_field (10); | |
112e8700 | 6345 | uiout->text ("\tpass count "); |
381befee | 6346 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6347 | uiout->text (" \n"); |
d9b3f62e | 6348 | } |
f2a8bc8a YQ |
6349 | |
6350 | /* Don't display it when tracepoint or tracepoint location is | |
6351 | pending. */ | |
6352 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6353 | { | |
6354 | annotate_field (11); | |
6355 | ||
112e8700 SM |
6356 | if (uiout->is_mi_like_p ()) |
6357 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6358 | loc->inserted ? "y" : "n"); |
6359 | else | |
6360 | { | |
6361 | if (loc->inserted) | |
112e8700 | 6362 | uiout->text ("\t"); |
f2a8bc8a | 6363 | else |
112e8700 SM |
6364 | uiout->text ("\tnot "); |
6365 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6366 | } |
6367 | } | |
1042e4c0 SS |
6368 | } |
6369 | ||
112e8700 | 6370 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6371 | { |
3a5c3e22 PA |
6372 | if (is_watchpoint (b)) |
6373 | { | |
6374 | struct watchpoint *w = (struct watchpoint *) b; | |
6375 | ||
112e8700 | 6376 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6377 | } |
f00aae0f | 6378 | else if (b->location != NULL |
d28cd78a | 6379 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6380 | uiout->field_string ("original-location", |
d28cd78a | 6381 | event_location_to_string (b->location.get ())); |
d24317b4 | 6382 | } |
c4093a6a | 6383 | } |
c5aa993b | 6384 | |
13674803 SM |
6385 | /* See breakpoint.h. */ |
6386 | ||
6387 | bool fix_multi_location_breakpoint_output_globally = false; | |
6388 | ||
0d381245 VP |
6389 | static void |
6390 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6391 | struct bp_location **last_loc, |
6c95b8df | 6392 | int allflag) |
0d381245 | 6393 | { |
79a45e25 | 6394 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6395 | bool use_fixed_output |
6396 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6397 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6398 | |
b4be1b06 | 6399 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
a38118e5 | 6400 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag, false); |
8d3788bd | 6401 | |
b4be1b06 SM |
6402 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6403 | are outside. */ | |
6404 | if (!use_fixed_output) | |
6405 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6406 | |
6407 | /* If this breakpoint has custom print function, | |
6408 | it's already printed. Otherwise, print individual | |
6409 | locations, if any. */ | |
a38118e5 PA |
6410 | if (b->ops == NULL |
6411 | || b->ops->print_one == NULL | |
6412 | || allflag) | |
0d381245 | 6413 | { |
4a64f543 MS |
6414 | /* If breakpoint has a single location that is disabled, we |
6415 | print it as if it had several locations, since otherwise it's | |
6416 | hard to represent "breakpoint enabled, location disabled" | |
6417 | situation. | |
6418 | ||
6419 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6420 | internally, that's not a property exposed to users. |
6421 | ||
6422 | Likewise, while catchpoints may be implemented with | |
6423 | breakpoints (e.g., catch throw), that's not a property | |
6424 | exposed to users. We do however display the internal | |
6425 | breakpoint locations with "maint info breakpoints". */ | |
6426 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6427 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6428 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6429 | && (allflag |
b5fa468f TBA |
6430 | || (b->loc && (b->loc->next |
6431 | || !b->loc->enabled | |
6432 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6433 | { |
b4be1b06 SM |
6434 | gdb::optional<ui_out_emit_list> locations_list; |
6435 | ||
6436 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6437 | MI record. For later versions, place breakpoint locations in a | |
6438 | list. */ | |
6439 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6440 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6441 | |
b4be1b06 | 6442 | int n = 1; |
40cb8ca5 | 6443 | for (bp_location *loc : b->locations ()) |
8d3788bd | 6444 | { |
b4be1b06 | 6445 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6446 | print_one_breakpoint_location (b, loc, n, last_loc, |
6447 | allflag, allflag); | |
40cb8ca5 | 6448 | n++; |
8d3788bd | 6449 | } |
0d381245 VP |
6450 | } |
6451 | } | |
6452 | } | |
6453 | ||
a6d9a66e UW |
6454 | static int |
6455 | breakpoint_address_bits (struct breakpoint *b) | |
6456 | { | |
6457 | int print_address_bits = 0; | |
a6d9a66e | 6458 | |
c6d81124 PA |
6459 | /* Software watchpoints that aren't watching memory don't have an |
6460 | address to print. */ | |
6461 | if (is_no_memory_software_watchpoint (b)) | |
6462 | return 0; | |
6463 | ||
40cb8ca5 | 6464 | for (bp_location *loc : b->locations ()) |
a6d9a66e | 6465 | { |
c7437ca6 PA |
6466 | int addr_bit; |
6467 | ||
c7437ca6 | 6468 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6469 | if (addr_bit > print_address_bits) |
6470 | print_address_bits = addr_bit; | |
6471 | } | |
6472 | ||
6473 | return print_address_bits; | |
6474 | } | |
0d381245 | 6475 | |
65630365 | 6476 | /* See breakpoint.h. */ |
c5aa993b | 6477 | |
65630365 PA |
6478 | void |
6479 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6480 | { |
a6d9a66e | 6481 | struct bp_location *dummy_loc = NULL; |
65630365 | 6482 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6483 | } |
c5aa993b | 6484 | |
09d682a4 TT |
6485 | /* Return true if this breakpoint was set by the user, false if it is |
6486 | internal or momentary. */ | |
6487 | ||
6488 | int | |
6489 | user_breakpoint_p (struct breakpoint *b) | |
6490 | { | |
46c6471b | 6491 | return b->number > 0; |
09d682a4 TT |
6492 | } |
6493 | ||
93daf339 TT |
6494 | /* See breakpoint.h. */ |
6495 | ||
6496 | int | |
6497 | pending_breakpoint_p (struct breakpoint *b) | |
6498 | { | |
6499 | return b->loc == NULL; | |
6500 | } | |
6501 | ||
5c458ae8 SM |
6502 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6503 | ||
6504 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6505 | understood by number_or_range_parser. Only breakpoints included in this | |
6506 | list are then printed. | |
6507 | ||
6508 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6509 | ||
6510 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6511 | ones for which it returns true. | |
6512 | ||
6513 | Return the total number of breakpoints listed. */ | |
c906108c | 6514 | |
d77f58be | 6515 | static int |
5c458ae8 | 6516 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6517 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6518 | { |
a6d9a66e | 6519 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6520 | int nr_printable_breakpoints; |
79a45b7d | 6521 | struct value_print_options opts; |
a6d9a66e | 6522 | int print_address_bits = 0; |
269b11a2 | 6523 | int print_type_col_width = 14; |
79a45e25 | 6524 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6525 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6526 | |
79a45b7d TT |
6527 | get_user_print_options (&opts); |
6528 | ||
4a64f543 MS |
6529 | /* Compute the number of rows in the table, as well as the size |
6530 | required for address fields. */ | |
7f3b0473 | 6531 | nr_printable_breakpoints = 0; |
43892fdf | 6532 | for (breakpoint *b : all_breakpoints ()) |
e5a67952 MS |
6533 | { |
6534 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6535 | if (filter && !filter (b)) | |
6536 | continue; | |
6537 | ||
5c458ae8 | 6538 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6539 | accept. Skip the others. */ |
5c458ae8 | 6540 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6541 | { |
5c458ae8 | 6542 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6543 | continue; |
5c458ae8 | 6544 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6545 | continue; |
6546 | } | |
269b11a2 | 6547 | |
5c458ae8 | 6548 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6549 | { |
6550 | int addr_bit, type_len; | |
a6d9a66e | 6551 | |
e5a67952 MS |
6552 | addr_bit = breakpoint_address_bits (b); |
6553 | if (addr_bit > print_address_bits) | |
6554 | print_address_bits = addr_bit; | |
269b11a2 | 6555 | |
e5a67952 MS |
6556 | type_len = strlen (bptype_string (b->type)); |
6557 | if (type_len > print_type_col_width) | |
6558 | print_type_col_width = type_len; | |
6559 | ||
6560 | nr_printable_breakpoints++; | |
6561 | } | |
6562 | } | |
7f3b0473 | 6563 | |
4a2b031d TT |
6564 | { |
6565 | ui_out_emit_table table_emitter (uiout, | |
6566 | opts.addressprint ? 6 : 5, | |
6567 | nr_printable_breakpoints, | |
6568 | "BreakpointTable"); | |
6569 | ||
6570 | if (nr_printable_breakpoints > 0) | |
6571 | annotate_breakpoints_headers (); | |
6572 | if (nr_printable_breakpoints > 0) | |
6573 | annotate_field (0); | |
6574 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6575 | if (nr_printable_breakpoints > 0) | |
6576 | annotate_field (1); | |
6577 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6578 | if (nr_printable_breakpoints > 0) | |
6579 | annotate_field (2); | |
6580 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6581 | if (nr_printable_breakpoints > 0) | |
6582 | annotate_field (3); | |
6583 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6584 | if (opts.addressprint) | |
6585 | { | |
6586 | if (nr_printable_breakpoints > 0) | |
6587 | annotate_field (4); | |
6588 | if (print_address_bits <= 32) | |
6589 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6590 | else | |
6591 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6592 | } | |
6593 | if (nr_printable_breakpoints > 0) | |
6594 | annotate_field (5); | |
6595 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6596 | uiout->table_body (); | |
6597 | if (nr_printable_breakpoints > 0) | |
6598 | annotate_breakpoints_table (); | |
6599 | ||
43892fdf | 6600 | for (breakpoint *b : all_breakpoints ()) |
4a2b031d TT |
6601 | { |
6602 | QUIT; | |
6603 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6604 | if (filter && !filter (b)) | |
6605 | continue; | |
e5a67952 | 6606 | |
5c458ae8 | 6607 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6608 | accept. Skip the others. */ |
e5a67952 | 6609 | |
5c458ae8 | 6610 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6611 | { |
5c458ae8 | 6612 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6613 | { |
5c458ae8 | 6614 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6615 | continue; |
6616 | } | |
6617 | else /* all others */ | |
6618 | { | |
5c458ae8 | 6619 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6620 | continue; |
6621 | } | |
6622 | } | |
6623 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6624 | show_internal is set. */ |
6625 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6626 | { |
6627 | print_one_breakpoint (b, &last_loc, show_internal); | |
40cb8ca5 | 6628 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
6629 | if (loc->disabled_by_cond) |
6630 | has_disabled_by_cond_location = true; | |
6631 | } | |
4a2b031d TT |
6632 | } |
6633 | } | |
698384cd | 6634 | |
7f3b0473 | 6635 | if (nr_printable_breakpoints == 0) |
c906108c | 6636 | { |
4a64f543 MS |
6637 | /* If there's a filter, let the caller decide how to report |
6638 | empty list. */ | |
d77f58be SS |
6639 | if (!filter) |
6640 | { | |
5c458ae8 | 6641 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6642 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6643 | else |
112e8700 | 6644 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6645 | bp_num_list); |
d77f58be | 6646 | } |
c906108c SS |
6647 | } |
6648 | else | |
c4093a6a | 6649 | { |
a6d9a66e UW |
6650 | if (last_loc && !server_command) |
6651 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f | 6652 | |
85c88e2a | 6653 | if (has_disabled_by_cond_location && !uiout->is_mi_like_p ()) |
b5fa468f TBA |
6654 | uiout->message (_("(*): Breakpoint condition is invalid at this " |
6655 | "location.\n")); | |
c4093a6a | 6656 | } |
c906108c | 6657 | |
4a64f543 | 6658 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6659 | there have been breakpoints? */ |
c906108c | 6660 | annotate_breakpoints_table_end (); |
d77f58be SS |
6661 | |
6662 | return nr_printable_breakpoints; | |
c906108c SS |
6663 | } |
6664 | ||
ad443146 SS |
6665 | /* Display the value of default-collect in a way that is generally |
6666 | compatible with the breakpoint list. */ | |
6667 | ||
6668 | static void | |
6669 | default_collect_info (void) | |
6670 | { | |
79a45e25 PA |
6671 | struct ui_out *uiout = current_uiout; |
6672 | ||
ad443146 SS |
6673 | /* If it has no value (which is frequently the case), say nothing; a |
6674 | message like "No default-collect." gets in user's face when it's | |
6675 | not wanted. */ | |
6676 | if (!*default_collect) | |
6677 | return; | |
6678 | ||
6679 | /* The following phrase lines up nicely with per-tracepoint collect | |
6680 | actions. */ | |
112e8700 SM |
6681 | uiout->text ("default collect "); |
6682 | uiout->field_string ("default-collect", default_collect); | |
6683 | uiout->text (" \n"); | |
ad443146 SS |
6684 | } |
6685 | ||
c906108c | 6686 | static void |
0b39b52e | 6687 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6688 | { |
5c458ae8 | 6689 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6690 | |
6691 | default_collect_info (); | |
d77f58be SS |
6692 | } |
6693 | ||
6694 | static void | |
1d12d88f | 6695 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6696 | { |
5c458ae8 | 6697 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6698 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6699 | |
6700 | if (num_printed == 0) | |
6701 | { | |
e5a67952 | 6702 | if (args == NULL || *args == '\0') |
112e8700 | 6703 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6704 | else |
112e8700 | 6705 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6706 | } |
c906108c SS |
6707 | } |
6708 | ||
7a292a7a | 6709 | static void |
4495129a | 6710 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6711 | { |
5c458ae8 | 6712 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6713 | |
6714 | default_collect_info (); | |
c906108c SS |
6715 | } |
6716 | ||
0d381245 | 6717 | static int |
714835d5 | 6718 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6719 | struct program_space *pspace, |
714835d5 | 6720 | CORE_ADDR pc, struct obj_section *section) |
0d381245 | 6721 | { |
40cb8ca5 | 6722 | for (bp_location *bl : b->locations ()) |
0d381245 | 6723 | { |
6c95b8df PA |
6724 | if (bl->pspace == pspace |
6725 | && bl->address == pc | |
0d381245 VP |
6726 | && (!overlay_debugging || bl->section == section)) |
6727 | return 1; | |
6728 | } | |
6729 | return 0; | |
6730 | } | |
6731 | ||
672f9b60 | 6732 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6733 | concerns with logical breakpoints, so we match program spaces, not |
6734 | address spaces. */ | |
c906108c SS |
6735 | |
6736 | static void | |
6c95b8df PA |
6737 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6738 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6739 | struct obj_section *section, int thread) |
c906108c | 6740 | { |
52f0bd74 | 6741 | int others = 0; |
c906108c | 6742 | |
43892fdf | 6743 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6744 | others += (user_breakpoint_p (b) |
dda83cd7 | 6745 | && breakpoint_has_pc (b, pspace, pc, section)); |
43892fdf | 6746 | |
c906108c SS |
6747 | if (others > 0) |
6748 | { | |
a3f17187 AC |
6749 | if (others == 1) |
6750 | printf_filtered (_("Note: breakpoint ")); | |
6751 | else /* if (others == ???) */ | |
6752 | printf_filtered (_("Note: breakpoints ")); | |
43892fdf | 6753 | for (breakpoint *b : all_breakpoints ()) |
672f9b60 | 6754 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6755 | { |
6756 | others--; | |
6757 | printf_filtered ("%d", b->number); | |
6758 | if (b->thread == -1 && thread != -1) | |
6759 | printf_filtered (" (all threads)"); | |
6760 | else if (b->thread != -1) | |
6761 | printf_filtered (" (thread %d)", b->thread); | |
6762 | printf_filtered ("%s%s ", | |
059fb39f | 6763 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6764 | || b->enable_state == bp_call_disabled) |
0d381245 | 6765 | ? " (disabled)" |
0d381245 VP |
6766 | : ""), |
6767 | (others > 1) ? "," | |
6768 | : ((others == 1) ? " and" : "")); | |
6769 | } | |
6a831f06 PA |
6770 | current_uiout->message (_("also set at pc %ps.\n"), |
6771 | styled_string (address_style.style (), | |
6772 | paddress (gdbarch, pc))); | |
c906108c SS |
6773 | } |
6774 | } | |
6775 | \f | |
c906108c | 6776 | |
cb1e4e32 PA |
6777 | /* Return true iff it is meaningful to use the address member of LOC. |
6778 | For some breakpoint types, the locations' address members are | |
6779 | irrelevant and it makes no sense to attempt to compare them to | |
6780 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6781 | |
cb1e4e32 PA |
6782 | More specifically, software watchpoints and catchpoints that are |
6783 | not backed by breakpoints always have a zero valued location | |
6784 | address and we don't want to mark breakpoints of any of these types | |
6785 | to be a duplicate of an actual breakpoint location at address | |
6786 | zero. */ | |
e4f237da | 6787 | |
cb1e4e32 PA |
6788 | static bool |
6789 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6790 | { |
cb1e4e32 | 6791 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6792 | } |
6793 | ||
6794 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6795 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6796 | ||
6797 | static int | |
4a64f543 MS |
6798 | watchpoint_locations_match (struct bp_location *loc1, |
6799 | struct bp_location *loc2) | |
2d134ed3 | 6800 | { |
3a5c3e22 PA |
6801 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6802 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6803 | ||
6804 | /* Both of them must exist. */ | |
6805 | gdb_assert (w1 != NULL); | |
6806 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6807 | |
4a64f543 MS |
6808 | /* If the target can evaluate the condition expression in hardware, |
6809 | then we we need to insert both watchpoints even if they are at | |
6810 | the same place. Otherwise the watchpoint will only trigger when | |
6811 | the condition of whichever watchpoint was inserted evaluates to | |
6812 | true, not giving a chance for GDB to check the condition of the | |
6813 | other watchpoint. */ | |
3a5c3e22 | 6814 | if ((w1->cond_exp |
4a64f543 MS |
6815 | && target_can_accel_watchpoint_condition (loc1->address, |
6816 | loc1->length, | |
0cf6dd15 | 6817 | loc1->watchpoint_type, |
4d01a485 | 6818 | w1->cond_exp.get ())) |
3a5c3e22 | 6819 | || (w2->cond_exp |
4a64f543 MS |
6820 | && target_can_accel_watchpoint_condition (loc2->address, |
6821 | loc2->length, | |
0cf6dd15 | 6822 | loc2->watchpoint_type, |
4d01a485 | 6823 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6824 | return 0; |
6825 | ||
85d721b8 PA |
6826 | /* Note that this checks the owner's type, not the location's. In |
6827 | case the target does not support read watchpoints, but does | |
6828 | support access watchpoints, we'll have bp_read_watchpoint | |
6829 | watchpoints with hw_access locations. Those should be considered | |
6830 | duplicates of hw_read locations. The hw_read locations will | |
6831 | become hw_access locations later. */ | |
2d134ed3 PA |
6832 | return (loc1->owner->type == loc2->owner->type |
6833 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6834 | && loc1->address == loc2->address | |
6835 | && loc1->length == loc2->length); | |
e4f237da KB |
6836 | } |
6837 | ||
31e77af2 | 6838 | /* See breakpoint.h. */ |
6c95b8df | 6839 | |
31e77af2 | 6840 | int |
accd0bcd YQ |
6841 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6842 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6843 | { |
f5656ead | 6844 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6845 | || aspace1 == aspace2) |
6846 | && addr1 == addr2); | |
6847 | } | |
6848 | ||
f1310107 TJB |
6849 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6850 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6851 | matches ASPACE2. On targets that have global breakpoints, the address | |
6852 | space doesn't really matter. */ | |
6853 | ||
6854 | static int | |
accd0bcd YQ |
6855 | breakpoint_address_match_range (const address_space *aspace1, |
6856 | CORE_ADDR addr1, | |
6857 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6858 | CORE_ADDR addr2) |
6859 | { | |
f5656ead | 6860 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6861 | || aspace1 == aspace2) |
6862 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6863 | } | |
6864 | ||
6865 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6866 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6867 | matches the breakpoint's address space. On targets that have global | |
6868 | breakpoints, the address space doesn't really matter. */ | |
6869 | ||
6870 | static int | |
6871 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6872 | const address_space *aspace, |
f1310107 TJB |
6873 | CORE_ADDR addr) |
6874 | { | |
6875 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6876 | aspace, addr) | |
6877 | || (bl->length | |
6878 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6879 | bl->address, bl->length, | |
6880 | aspace, addr))); | |
6881 | } | |
6882 | ||
d35ae833 PA |
6883 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6884 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6885 | match happens only if ASPACE matches the breakpoint's address | |
6886 | space. On targets that have global breakpoints, the address space | |
6887 | doesn't really matter. */ | |
6888 | ||
6889 | static int | |
6890 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6891 | const address_space *aspace, |
d35ae833 PA |
6892 | CORE_ADDR addr, int len) |
6893 | { | |
6894 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6895 | || bl->pspace->aspace == aspace) | |
6896 | { | |
6897 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6898 | ||
6899 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6900 | return 1; | |
6901 | } | |
6902 | return 0; | |
6903 | } | |
6904 | ||
1e4d1764 YQ |
6905 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6906 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6907 | true, otherwise returns false. */ | |
6908 | ||
6909 | static int | |
6910 | tracepoint_locations_match (struct bp_location *loc1, | |
6911 | struct bp_location *loc2) | |
6912 | { | |
6913 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6914 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6915 | locations at the same address of different tracepoints are regarded as | |
6916 | different locations. */ | |
6917 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6918 | else | |
6919 | return 0; | |
6920 | } | |
6921 | ||
2d134ed3 | 6922 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 6923 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
6924 | the same location. If SW_HW_BPS_MATCH is true, then software |
6925 | breakpoint locations and hardware breakpoint locations match, | |
6926 | otherwise they don't. */ | |
2d134ed3 PA |
6927 | |
6928 | static int | |
7f32a4d5 PA |
6929 | breakpoint_locations_match (struct bp_location *loc1, |
6930 | struct bp_location *loc2, | |
6931 | bool sw_hw_bps_match) | |
2d134ed3 | 6932 | { |
2bdf28a0 JK |
6933 | int hw_point1, hw_point2; |
6934 | ||
6935 | /* Both of them must not be in moribund_locations. */ | |
6936 | gdb_assert (loc1->owner != NULL); | |
6937 | gdb_assert (loc2->owner != NULL); | |
6938 | ||
6939 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6940 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6941 | |
6942 | if (hw_point1 != hw_point2) | |
6943 | return 0; | |
6944 | else if (hw_point1) | |
6945 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6946 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6947 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6948 | else |
7f32a4d5 PA |
6949 | /* We compare bp_location.length in order to cover ranged |
6950 | breakpoints. Keep this in sync with | |
6951 | bp_location_is_less_than. */ | |
f1310107 TJB |
6952 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
6953 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 6954 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 6955 | && loc1->length == loc2->length); |
2d134ed3 PA |
6956 | } |
6957 | ||
76897487 KB |
6958 | static void |
6959 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
dda83cd7 | 6960 | int bnum, int have_bnum) |
76897487 | 6961 | { |
f63fbe86 MS |
6962 | /* The longest string possibly returned by hex_string_custom |
6963 | is 50 chars. These must be at least that big for safety. */ | |
6964 | char astr1[64]; | |
6965 | char astr2[64]; | |
76897487 | 6966 | |
bb599908 PH |
6967 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6968 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6969 | if (have_bnum) |
8a3fe4f8 | 6970 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 6971 | bnum, astr1, astr2); |
76897487 | 6972 | else |
8a3fe4f8 | 6973 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6974 | } |
6975 | ||
4a64f543 MS |
6976 | /* Adjust a breakpoint's address to account for architectural |
6977 | constraints on breakpoint placement. Return the adjusted address. | |
6978 | Note: Very few targets require this kind of adjustment. For most | |
6979 | targets, this function is simply the identity function. */ | |
76897487 KB |
6980 | |
6981 | static CORE_ADDR | |
a6d9a66e UW |
6982 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6983 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6984 | { |
a0de8c21 YQ |
6985 | if (bptype == bp_watchpoint |
6986 | || bptype == bp_hardware_watchpoint | |
6987 | || bptype == bp_read_watchpoint | |
6988 | || bptype == bp_access_watchpoint | |
6989 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6990 | { |
6991 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 6992 | have their addresses modified. */ |
88f7da05 KB |
6993 | return bpaddr; |
6994 | } | |
7c16b83e PA |
6995 | else if (bptype == bp_single_step) |
6996 | { | |
6997 | /* Single-step breakpoints should not have their addresses | |
6998 | modified. If there's any architectural constrain that | |
6999 | applies to this address, then it should have already been | |
7000 | taken into account when the breakpoint was created in the | |
7001 | first place. If we didn't do this, stepping through e.g., | |
7002 | Thumb-2 IT blocks would break. */ | |
7003 | return bpaddr; | |
7004 | } | |
76897487 KB |
7005 | else |
7006 | { | |
a0de8c21 YQ |
7007 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7008 | ||
7009 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
7010 | { | |
7011 | /* Some targets have architectural constraints on the placement | |
7012 | of breakpoint instructions. Obtain the adjusted address. */ | |
7013 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
7014 | } | |
76897487 | 7015 | |
a0de8c21 | 7016 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
7017 | |
7018 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7019 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7020 | is required. */ |
7021 | if (adjusted_bpaddr != bpaddr) | |
7022 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7023 | ||
7024 | return adjusted_bpaddr; | |
7025 | } | |
7026 | } | |
7027 | ||
cb1e4e32 PA |
7028 | static bp_loc_type |
7029 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7030 | { |
cb1e4e32 | 7031 | switch (type) |
e049a4b5 DJ |
7032 | { |
7033 | case bp_breakpoint: | |
7c16b83e | 7034 | case bp_single_step: |
e049a4b5 DJ |
7035 | case bp_until: |
7036 | case bp_finish: | |
7037 | case bp_longjmp: | |
7038 | case bp_longjmp_resume: | |
e2e4d78b | 7039 | case bp_longjmp_call_dummy: |
186c406b TT |
7040 | case bp_exception: |
7041 | case bp_exception_resume: | |
e049a4b5 | 7042 | case bp_step_resume: |
2c03e5be | 7043 | case bp_hp_step_resume: |
e049a4b5 DJ |
7044 | case bp_watchpoint_scope: |
7045 | case bp_call_dummy: | |
aa7d318d | 7046 | case bp_std_terminate: |
e049a4b5 DJ |
7047 | case bp_shlib_event: |
7048 | case bp_thread_event: | |
7049 | case bp_overlay_event: | |
4efc6507 | 7050 | case bp_jit_event: |
0fd8e87f | 7051 | case bp_longjmp_master: |
aa7d318d | 7052 | case bp_std_terminate_master: |
186c406b | 7053 | case bp_exception_master: |
0e30163f JK |
7054 | case bp_gnu_ifunc_resolver: |
7055 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7056 | case bp_dprintf: |
cb1e4e32 | 7057 | return bp_loc_software_breakpoint; |
e049a4b5 | 7058 | case bp_hardware_breakpoint: |
cb1e4e32 | 7059 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7060 | case bp_hardware_watchpoint: |
7061 | case bp_read_watchpoint: | |
7062 | case bp_access_watchpoint: | |
cb1e4e32 | 7063 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7064 | case bp_watchpoint: |
ce78b96d | 7065 | case bp_catchpoint: |
15c3d785 PA |
7066 | case bp_tracepoint: |
7067 | case bp_fast_tracepoint: | |
0fb4aa4b | 7068 | case bp_static_tracepoint: |
cb1e4e32 | 7069 | return bp_loc_other; |
e049a4b5 | 7070 | default: |
e2e0b3e5 | 7071 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 7072 | } |
cb1e4e32 PA |
7073 | } |
7074 | ||
7075 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7076 | { | |
7077 | this->owner = owner; | |
7078 | this->cond_bytecode = NULL; | |
7079 | this->shlib_disabled = 0; | |
7080 | this->enabled = 1; | |
b5fa468f | 7081 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7082 | |
7083 | this->loc_type = type; | |
e049a4b5 | 7084 | |
cb1e4e32 PA |
7085 | if (this->loc_type == bp_loc_software_breakpoint |
7086 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7087 | mark_breakpoint_location_modified (this); | |
7088 | ||
b6433ede | 7089 | incref (); |
cb1e4e32 PA |
7090 | } |
7091 | ||
7092 | bp_location::bp_location (breakpoint *owner) | |
7093 | : bp_location::bp_location (owner, | |
7094 | bp_location_from_bp_type (owner->type)) | |
7095 | { | |
28010a5d PA |
7096 | } |
7097 | ||
7098 | /* Allocate a struct bp_location. */ | |
7099 | ||
7100 | static struct bp_location * | |
7101 | allocate_bp_location (struct breakpoint *bpt) | |
7102 | { | |
348d480f PA |
7103 | return bpt->ops->allocate_location (bpt); |
7104 | } | |
7cc221ef | 7105 | |
f431efe5 PA |
7106 | /* Decrement reference count. If the reference count reaches 0, |
7107 | destroy the bp_location. Sets *BLP to NULL. */ | |
7108 | ||
7109 | static void | |
7110 | decref_bp_location (struct bp_location **blp) | |
7111 | { | |
b6433ede | 7112 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7113 | *blp = NULL; |
7114 | } | |
7115 | ||
346774a9 | 7116 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7117 | |
b270e6f9 TT |
7118 | static breakpoint * |
7119 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7120 | { |
346774a9 | 7121 | struct breakpoint *b1; |
b270e6f9 | 7122 | struct breakpoint *result = b.get (); |
c906108c | 7123 | |
346774a9 PA |
7124 | /* Add this breakpoint to the end of the chain so that a list of |
7125 | breakpoints will come out in order of increasing numbers. */ | |
7126 | ||
7127 | b1 = breakpoint_chain; | |
7128 | if (b1 == 0) | |
b270e6f9 | 7129 | breakpoint_chain = b.release (); |
346774a9 PA |
7130 | else |
7131 | { | |
7132 | while (b1->next) | |
7133 | b1 = b1->next; | |
b270e6f9 | 7134 | b1->next = b.release (); |
346774a9 | 7135 | } |
b270e6f9 TT |
7136 | |
7137 | return result; | |
346774a9 PA |
7138 | } |
7139 | ||
7140 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7141 | ||
7142 | static void | |
7143 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7144 | struct gdbarch *gdbarch, | |
28010a5d | 7145 | enum bptype bptype, |
c0a91b2b | 7146 | const struct breakpoint_ops *ops) |
346774a9 | 7147 | { |
348d480f PA |
7148 | gdb_assert (ops != NULL); |
7149 | ||
28010a5d | 7150 | b->ops = ops; |
4d28f7a8 | 7151 | b->type = bptype; |
a6d9a66e | 7152 | b->gdbarch = gdbarch; |
c906108c SS |
7153 | b->language = current_language->la_language; |
7154 | b->input_radix = input_radix; | |
d0fb5eae | 7155 | b->related_breakpoint = b; |
346774a9 PA |
7156 | } |
7157 | ||
7158 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7159 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7160 | |
7161 | static struct breakpoint * | |
7162 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7163 | enum bptype bptype, |
c0a91b2b | 7164 | const struct breakpoint_ops *ops) |
346774a9 | 7165 | { |
3b0871f4 | 7166 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7167 | |
3b0871f4 | 7168 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7169 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7170 | } |
7171 | ||
0ba852ab | 7172 | /* Initialize loc->function_name. */ |
0e30163f | 7173 | |
0d381245 | 7174 | static void |
0ba852ab | 7175 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7176 | { |
2bdf28a0 JK |
7177 | gdb_assert (loc->owner != NULL); |
7178 | ||
0d381245 | 7179 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7180 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7181 | || is_tracepoint (loc->owner)) |
0d381245 | 7182 | { |
2c02bd72 | 7183 | const char *function_name; |
0e30163f | 7184 | |
3467ec66 | 7185 | if (loc->msymbol != NULL |
f50776aa | 7186 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7187 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7188 | { |
7189 | struct breakpoint *b = loc->owner; | |
7190 | ||
c9d95fa3 | 7191 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7192 | |
7193 | if (b->type == bp_breakpoint && b->loc == loc | |
7194 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7195 | { |
7196 | /* Create only the whole new breakpoint of this type but do not | |
7197 | mess more complicated breakpoints with multiple locations. */ | |
7198 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7199 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7200 | breakpoint. */ |
3467ec66 | 7201 | loc->related_address = loc->address; |
0e30163f JK |
7202 | } |
7203 | } | |
3467ec66 PA |
7204 | else |
7205 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7206 | |
2c02bd72 DE |
7207 | if (function_name) |
7208 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7209 | } |
7210 | } | |
7211 | ||
a6d9a66e | 7212 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7213 | struct gdbarch * |
a6d9a66e UW |
7214 | get_sal_arch (struct symtab_and_line sal) |
7215 | { | |
7216 | if (sal.section) | |
08feed99 | 7217 | return sal.section->objfile->arch (); |
a6d9a66e | 7218 | if (sal.symtab) |
08feed99 | 7219 | return SYMTAB_OBJFILE (sal.symtab)->arch (); |
a6d9a66e UW |
7220 | |
7221 | return NULL; | |
7222 | } | |
7223 | ||
346774a9 PA |
7224 | /* Low level routine for partially initializing a breakpoint of type |
7225 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7226 | file name, and line number are provided by SAL. |
0d381245 VP |
7227 | |
7228 | It is expected that the caller will complete the initialization of | |
7229 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7230 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7231 | |
346774a9 PA |
7232 | static void |
7233 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7234 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7235 | const struct breakpoint_ops *ops) |
0d381245 | 7236 | { |
28010a5d | 7237 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7238 | |
3742cc8b | 7239 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7240 | |
6c95b8df PA |
7241 | if (bptype != bp_catchpoint) |
7242 | gdb_assert (sal.pspace != NULL); | |
7243 | ||
f8eba3c6 TT |
7244 | /* Store the program space that was used to set the breakpoint, |
7245 | except for ordinary breakpoints, which are independent of the | |
7246 | program space. */ | |
7247 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7248 | b->pspace = sal.pspace; | |
346774a9 | 7249 | } |
c906108c | 7250 | |
346774a9 PA |
7251 | /* set_raw_breakpoint is a low level routine for allocating and |
7252 | partially initializing a breakpoint of type BPTYPE. The newly | |
7253 | created breakpoint's address, section, source file name, and line | |
7254 | number are provided by SAL. The newly created and partially | |
7255 | initialized breakpoint is added to the breakpoint chain and | |
7256 | is also returned as the value of this function. | |
7257 | ||
7258 | It is expected that the caller will complete the initialization of | |
7259 | the newly created breakpoint struct as well as output any status | |
7260 | information regarding the creation of a new breakpoint. In | |
7261 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7262 | number! Care should be taken to not allow an error to occur | |
7263 | prior to completing the initialization of the breakpoint. If this | |
7264 | should happen, a bogus breakpoint will be left on the chain. */ | |
7265 | ||
7266 | struct breakpoint * | |
7267 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7268 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7269 | const struct breakpoint_ops *ops) |
346774a9 | 7270 | { |
3b0871f4 | 7271 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7272 | |
3b0871f4 | 7273 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7274 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7275 | } |
7276 | ||
53a5351d | 7277 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7278 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7279 | initiated the operation. */ | |
c906108c SS |
7280 | |
7281 | void | |
186c406b | 7282 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7283 | { |
5d5658a1 | 7284 | int thread = tp->global_num; |
0fd8e87f UW |
7285 | |
7286 | /* To avoid having to rescan all objfile symbols at every step, | |
7287 | we maintain a list of continually-inserted but always disabled | |
7288 | longjmp "master" breakpoints. Here, we simply create momentary | |
7289 | clones of those and enable them for the requested thread. */ | |
1428b37a | 7290 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df | 7291 | if (b->pspace == current_program_space |
186c406b TT |
7292 | && (b->type == bp_longjmp_master |
7293 | || b->type == bp_exception_master)) | |
0fd8e87f | 7294 | { |
06edf0c0 PA |
7295 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7296 | struct breakpoint *clone; | |
cc59ec59 | 7297 | |
e2e4d78b JK |
7298 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7299 | after their removal. */ | |
06edf0c0 | 7300 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7301 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7302 | clone->thread = thread; |
7303 | } | |
186c406b TT |
7304 | |
7305 | tp->initiating_frame = frame; | |
c906108c SS |
7306 | } |
7307 | ||
611c83ae | 7308 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7309 | void |
611c83ae | 7310 | delete_longjmp_breakpoint (int thread) |
c906108c | 7311 | { |
1428b37a | 7312 | for (breakpoint *b : all_breakpoints_safe ()) |
186c406b | 7313 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7314 | { |
7315 | if (b->thread == thread) | |
7316 | delete_breakpoint (b); | |
7317 | } | |
c906108c SS |
7318 | } |
7319 | ||
f59f708a PA |
7320 | void |
7321 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7322 | { | |
1428b37a | 7323 | for (breakpoint *b : all_breakpoints_safe ()) |
f59f708a PA |
7324 | if (b->type == bp_longjmp || b->type == bp_exception) |
7325 | { | |
7326 | if (b->thread == thread) | |
7327 | b->disposition = disp_del_at_next_stop; | |
7328 | } | |
7329 | } | |
7330 | ||
e2e4d78b JK |
7331 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7332 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7333 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7334 | breakpoints. */ | |
7335 | ||
7336 | struct breakpoint * | |
7337 | set_longjmp_breakpoint_for_call_dummy (void) | |
7338 | { | |
43892fdf | 7339 | breakpoint *retval = nullptr; |
e2e4d78b | 7340 | |
43892fdf | 7341 | for (breakpoint *b : all_breakpoints ()) |
e2e4d78b JK |
7342 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) |
7343 | { | |
7344 | struct breakpoint *new_b; | |
7345 | ||
7346 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7347 | &momentary_breakpoint_ops, |
7348 | 1); | |
00431a78 | 7349 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7350 | |
7351 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7352 | ||
7353 | gdb_assert (new_b->related_breakpoint == new_b); | |
7354 | if (retval == NULL) | |
7355 | retval = new_b; | |
7356 | new_b->related_breakpoint = retval; | |
7357 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7358 | retval = retval->related_breakpoint; | |
7359 | retval->related_breakpoint = new_b; | |
7360 | } | |
7361 | ||
7362 | return retval; | |
7363 | } | |
7364 | ||
7365 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7366 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7367 | stack. |
7368 | ||
b4b3e2de AB |
7369 | If the unwind fails then there is not sufficient information to discard |
7370 | dummy frames. In this case, elide the clean up and the dummy frames will | |
7371 | be cleaned up next time this function is called from a location where | |
7372 | unwinding is possible. */ | |
e2e4d78b JK |
7373 | |
7374 | void | |
b67a2c6f | 7375 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7376 | { |
7377 | struct breakpoint *b, *b_tmp; | |
7378 | ||
7379 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7380 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7381 | { |
7382 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7383 | ||
b4b3e2de AB |
7384 | /* Find the bp_call_dummy breakpoint in the list of breakpoints |
7385 | chained off b->related_breakpoint. */ | |
e2e4d78b JK |
7386 | while (dummy_b != b && dummy_b->type != bp_call_dummy) |
7387 | dummy_b = dummy_b->related_breakpoint; | |
b4b3e2de AB |
7388 | |
7389 | /* If there was no bp_call_dummy breakpoint then there's nothing | |
7390 | more to do. Or, if the dummy frame associated with the | |
7391 | bp_call_dummy is still on the stack then we need to leave this | |
7392 | bp_call_dummy in place. */ | |
e2e4d78b JK |
7393 | if (dummy_b->type != bp_call_dummy |
7394 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7395 | continue; | |
b4b3e2de AB |
7396 | |
7397 | /* We didn't find the dummy frame on the stack, this could be | |
7398 | because we have longjmp'd to a stack frame that is previous to | |
7399 | the dummy frame, or it could be because the stack unwind is | |
7400 | broken at some point between the longjmp frame and the dummy | |
7401 | frame. | |
7402 | ||
7403 | Next we figure out why the stack unwind stopped. If it looks | |
7404 | like the unwind is complete then we assume the dummy frame has | |
7405 | been jumped over, however, if the unwind stopped for an | |
7406 | unexpected reason then we assume the stack unwind is currently | |
7407 | broken, and that we will (eventually) return to the dummy | |
7408 | frame. | |
7409 | ||
7410 | It might be tempting to consider using frame_id_inner here, but | |
7411 | that is not safe. There is no guarantee that the stack frames | |
7412 | we are looking at here are even on the same stack as the | |
7413 | original dummy frame, hence frame_id_inner can't be used. See | |
7414 | the comments on frame_id_inner for more details. */ | |
7415 | bool unwind_finished_unexpectedly = false; | |
7416 | for (struct frame_info *fi = get_current_frame (); fi != nullptr; ) | |
7417 | { | |
7418 | struct frame_info *prev = get_prev_frame (fi); | |
7419 | if (prev == nullptr) | |
7420 | { | |
7421 | /* FI is the last stack frame. Why did this frame not | |
7422 | unwind further? */ | |
7423 | auto stop_reason = get_frame_unwind_stop_reason (fi); | |
7424 | if (stop_reason != UNWIND_NO_REASON | |
7425 | && stop_reason != UNWIND_OUTERMOST) | |
7426 | unwind_finished_unexpectedly = true; | |
7427 | } | |
7428 | fi = prev; | |
7429 | } | |
7430 | if (unwind_finished_unexpectedly) | |
7431 | continue; | |
7432 | ||
00431a78 | 7433 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7434 | |
7435 | while (b->related_breakpoint != b) | |
7436 | { | |
7437 | if (b_tmp == b->related_breakpoint) | |
7438 | b_tmp = b->related_breakpoint->next; | |
7439 | delete_breakpoint (b->related_breakpoint); | |
7440 | } | |
7441 | delete_breakpoint (b); | |
7442 | } | |
7443 | } | |
7444 | ||
1900040c MS |
7445 | void |
7446 | enable_overlay_breakpoints (void) | |
7447 | { | |
43892fdf | 7448 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7449 | if (b->type == bp_overlay_event) |
01add95b SM |
7450 | { |
7451 | b->enable_state = bp_enabled; | |
7452 | update_global_location_list (UGLL_MAY_INSERT); | |
7453 | overlay_events_enabled = 1; | |
7454 | } | |
1900040c MS |
7455 | } |
7456 | ||
7457 | void | |
7458 | disable_overlay_breakpoints (void) | |
7459 | { | |
43892fdf | 7460 | for (breakpoint *b : all_breakpoints ()) |
1900040c | 7461 | if (b->type == bp_overlay_event) |
01add95b SM |
7462 | { |
7463 | b->enable_state = bp_disabled; | |
7464 | update_global_location_list (UGLL_DONT_INSERT); | |
7465 | overlay_events_enabled = 0; | |
7466 | } | |
1900040c MS |
7467 | } |
7468 | ||
aa7d318d TT |
7469 | /* Set an active std::terminate breakpoint for each std::terminate |
7470 | master breakpoint. */ | |
7471 | void | |
7472 | set_std_terminate_breakpoint (void) | |
7473 | { | |
1428b37a | 7474 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7475 | if (b->pspace == current_program_space |
7476 | && b->type == bp_std_terminate_master) | |
7477 | { | |
06edf0c0 | 7478 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7479 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7480 | } |
7481 | } | |
7482 | ||
7483 | /* Delete all the std::terminate breakpoints. */ | |
7484 | void | |
7485 | delete_std_terminate_breakpoint (void) | |
7486 | { | |
1428b37a | 7487 | for (breakpoint *b : all_breakpoints_safe ()) |
aa7d318d TT |
7488 | if (b->type == bp_std_terminate) |
7489 | delete_breakpoint (b); | |
7490 | } | |
7491 | ||
c4093a6a | 7492 | struct breakpoint * |
a6d9a66e | 7493 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7494 | { |
7495 | struct breakpoint *b; | |
c4093a6a | 7496 | |
06edf0c0 PA |
7497 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7498 | &internal_breakpoint_ops); | |
7499 | ||
b5de0fa7 | 7500 | b->enable_state = bp_enabled; |
f00aae0f | 7501 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7502 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7503 | |
44702360 | 7504 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7505 | |
c4093a6a JM |
7506 | return b; |
7507 | } | |
7508 | ||
0101ce28 JJ |
7509 | struct lang_and_radix |
7510 | { | |
7511 | enum language lang; | |
7512 | int radix; | |
7513 | }; | |
7514 | ||
4efc6507 DE |
7515 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7516 | ||
7517 | struct breakpoint * | |
7518 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7519 | { | |
2a7f3dff PA |
7520 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7521 | &internal_breakpoint_ops); | |
4efc6507 | 7522 | } |
0101ce28 | 7523 | |
03673fc7 PP |
7524 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7525 | ||
7526 | void | |
7527 | remove_jit_event_breakpoints (void) | |
7528 | { | |
1428b37a | 7529 | for (breakpoint *b : all_breakpoints_safe ()) |
03673fc7 PP |
7530 | if (b->type == bp_jit_event |
7531 | && b->loc->pspace == current_program_space) | |
7532 | delete_breakpoint (b); | |
7533 | } | |
7534 | ||
cae688ec JJ |
7535 | void |
7536 | remove_solib_event_breakpoints (void) | |
7537 | { | |
1428b37a | 7538 | for (breakpoint *b : all_breakpoints_safe ()) |
6c95b8df PA |
7539 | if (b->type == bp_shlib_event |
7540 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7541 | delete_breakpoint (b); |
7542 | } | |
7543 | ||
f37f681c PA |
7544 | /* See breakpoint.h. */ |
7545 | ||
7546 | void | |
7547 | remove_solib_event_breakpoints_at_next_stop (void) | |
7548 | { | |
1428b37a | 7549 | for (breakpoint *b : all_breakpoints_safe ()) |
f37f681c PA |
7550 | if (b->type == bp_shlib_event |
7551 | && b->loc->pspace == current_program_space) | |
7552 | b->disposition = disp_del_at_next_stop; | |
7553 | } | |
7554 | ||
04086b45 PA |
7555 | /* Helper for create_solib_event_breakpoint / |
7556 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7557 | INSERT_MODE to pass through to update_global_location_list. */ | |
7558 | ||
7559 | static struct breakpoint * | |
7560 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7561 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7562 | { |
7563 | struct breakpoint *b; | |
7564 | ||
06edf0c0 PA |
7565 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7566 | &internal_breakpoint_ops); | |
04086b45 | 7567 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7568 | return b; |
7569 | } | |
7570 | ||
04086b45 PA |
7571 | struct breakpoint * |
7572 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7573 | { | |
7574 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7575 | } | |
7576 | ||
f37f681c PA |
7577 | /* See breakpoint.h. */ |
7578 | ||
7579 | struct breakpoint * | |
7580 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7581 | { | |
7582 | struct breakpoint *b; | |
7583 | ||
04086b45 PA |
7584 | /* Explicitly tell update_global_location_list to insert |
7585 | locations. */ | |
7586 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7587 | if (!b->loc->inserted) |
7588 | { | |
7589 | delete_breakpoint (b); | |
7590 | return NULL; | |
7591 | } | |
7592 | return b; | |
7593 | } | |
7594 | ||
cae688ec JJ |
7595 | /* Disable any breakpoints that are on code in shared libraries. Only |
7596 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7597 | ||
7598 | void | |
cb851954 | 7599 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7600 | { |
48d7020b | 7601 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7602 | { |
7603 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7604 | struct breakpoint *b = loc->owner; | |
7605 | ||
7606 | /* We apply the check to all breakpoints, including disabled for | |
7607 | those with loc->duplicate set. This is so that when breakpoint | |
7608 | becomes enabled, or the duplicate is removed, gdb will try to | |
7609 | insert all breakpoints. If we don't set shlib_disabled here, | |
7610 | we'll try to insert those breakpoints and fail. */ | |
7611 | if (((b->type == bp_breakpoint) | |
7612 | || (b->type == bp_jit_event) | |
7613 | || (b->type == bp_hardware_breakpoint) | |
7614 | || (is_tracepoint (b))) | |
7615 | && loc->pspace == current_program_space | |
7616 | && !loc->shlib_disabled | |
7617 | && solib_name_from_address (loc->pspace, loc->address) | |
7618 | ) | |
7619 | { | |
7620 | loc->shlib_disabled = 1; | |
7621 | } | |
7622 | } | |
cae688ec JJ |
7623 | } |
7624 | ||
63644780 NB |
7625 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7626 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7627 | disabled ones can just stay disabled. */ | |
84acb35a | 7628 | |
75149521 | 7629 | static void |
84acb35a JJ |
7630 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7631 | { | |
84acb35a JJ |
7632 | int disabled_shlib_breaks = 0; |
7633 | ||
48d7020b | 7634 | for (bp_location *loc : all_bp_locations ()) |
01add95b SM |
7635 | { |
7636 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ | |
7637 | struct breakpoint *b = loc->owner; | |
7638 | ||
7639 | if (solib->pspace == loc->pspace | |
7640 | && !loc->shlib_disabled | |
7641 | && (((b->type == bp_breakpoint | |
7642 | || b->type == bp_jit_event | |
7643 | || b->type == bp_hardware_breakpoint) | |
7644 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7645 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7646 | || is_tracepoint (b)) | |
7647 | && solib_contains_address_p (solib, loc->address)) | |
7648 | { | |
7649 | loc->shlib_disabled = 1; | |
7650 | /* At this point, we cannot rely on remove_breakpoint | |
7651 | succeeding so we must mark the breakpoint as not inserted | |
7652 | to prevent future errors occurring in remove_breakpoints. */ | |
7653 | loc->inserted = 0; | |
7654 | ||
7655 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7656 | gdb::observers::breakpoint_modified.notify (b); | |
7657 | ||
7658 | if (!disabled_shlib_breaks) | |
7659 | { | |
7660 | target_terminal::ours_for_output (); | |
7661 | warning (_("Temporarily disabling breakpoints " | |
7662 | "for unloaded shared library \"%s\""), | |
7663 | solib->so_name); | |
7664 | } | |
7665 | disabled_shlib_breaks = 1; | |
7666 | } | |
7667 | } | |
84acb35a JJ |
7668 | } |
7669 | ||
63644780 NB |
7670 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7671 | notification of free_objfile. Only apply to enabled breakpoints, | |
7672 | disabled ones can just stay disabled. */ | |
7673 | ||
7674 | static void | |
7675 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7676 | { | |
63644780 NB |
7677 | if (objfile == NULL) |
7678 | return; | |
7679 | ||
d03de421 PA |
7680 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7681 | managed by the user with add-symbol-file/remove-symbol-file. | |
7682 | Similarly to how breakpoints in shared libraries are handled in | |
7683 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7684 | shlib_disabled so they end up uninserted on the next global |
7685 | location list update. Shared libraries not loaded by the user | |
7686 | aren't handled here -- they're already handled in | |
7687 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7688 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7689 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7690 | main objfile). */ | |
7691 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7692 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7693 | return; |
7694 | ||
43892fdf | 7695 | for (breakpoint *b : all_breakpoints ()) |
63644780 | 7696 | { |
63644780 NB |
7697 | int bp_modified = 0; |
7698 | ||
7699 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7700 | continue; | |
7701 | ||
40cb8ca5 | 7702 | for (bp_location *loc : b->locations ()) |
63644780 NB |
7703 | { |
7704 | CORE_ADDR loc_addr = loc->address; | |
7705 | ||
7706 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7707 | && loc->loc_type != bp_loc_software_breakpoint) | |
7708 | continue; | |
7709 | ||
7710 | if (loc->shlib_disabled != 0) | |
7711 | continue; | |
7712 | ||
7713 | if (objfile->pspace != loc->pspace) | |
7714 | continue; | |
7715 | ||
7716 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7717 | && loc->loc_type != bp_loc_software_breakpoint) | |
7718 | continue; | |
7719 | ||
7720 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7721 | { | |
7722 | loc->shlib_disabled = 1; | |
08351840 PA |
7723 | /* At this point, we don't know whether the object was |
7724 | unmapped from the inferior or not, so leave the | |
7725 | inserted flag alone. We'll handle failure to | |
7726 | uninsert quietly, in case the object was indeed | |
7727 | unmapped. */ | |
63644780 NB |
7728 | |
7729 | mark_breakpoint_location_modified (loc); | |
7730 | ||
7731 | bp_modified = 1; | |
7732 | } | |
7733 | } | |
7734 | ||
7735 | if (bp_modified) | |
76727919 | 7736 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7737 | } |
7738 | } | |
7739 | ||
ce78b96d JB |
7740 | /* FORK & VFORK catchpoints. */ |
7741 | ||
e29a4733 | 7742 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7743 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7744 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7745 | |
c1fc2657 | 7746 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7747 | { |
e29a4733 PA |
7748 | /* Process id of a child process whose forking triggered this |
7749 | catchpoint. This field is only valid immediately after this | |
7750 | catchpoint has triggered. */ | |
7751 | ptid_t forked_inferior_pid; | |
7752 | }; | |
7753 | ||
4a64f543 MS |
7754 | /* Implement the "insert" breakpoint_ops method for fork |
7755 | catchpoints. */ | |
ce78b96d | 7756 | |
77b06cd7 TJB |
7757 | static int |
7758 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7759 | { |
e99b03dc | 7760 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7761 | } |
7762 | ||
4a64f543 MS |
7763 | /* Implement the "remove" breakpoint_ops method for fork |
7764 | catchpoints. */ | |
ce78b96d JB |
7765 | |
7766 | static int | |
73971819 | 7767 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7768 | { |
e99b03dc | 7769 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7770 | } |
7771 | ||
7772 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7773 | catchpoints. */ | |
7774 | ||
7775 | static int | |
f1310107 | 7776 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7777 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7778 | const struct target_waitstatus *ws) |
ce78b96d | 7779 | { |
e29a4733 PA |
7780 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7781 | ||
f90263c1 TT |
7782 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7783 | return 0; | |
7784 | ||
7785 | c->forked_inferior_pid = ws->value.related_pid; | |
7786 | return 1; | |
ce78b96d JB |
7787 | } |
7788 | ||
4a64f543 MS |
7789 | /* Implement the "print_it" breakpoint_ops method for fork |
7790 | catchpoints. */ | |
ce78b96d JB |
7791 | |
7792 | static enum print_stop_action | |
348d480f | 7793 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7794 | { |
36dfb11c | 7795 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7796 | struct breakpoint *b = bs->breakpoint_at; |
7797 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7798 | |
ce78b96d | 7799 | annotate_catchpoint (b->number); |
f303dbd6 | 7800 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7801 | if (b->disposition == disp_del) |
112e8700 | 7802 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7803 | else |
112e8700 SM |
7804 | uiout->text ("Catchpoint "); |
7805 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7806 | { |
112e8700 SM |
7807 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7808 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7809 | } |
381befee | 7810 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7811 | uiout->text (" (forked process "); |
381befee | 7812 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7813 | uiout->text ("), "); |
ce78b96d JB |
7814 | return PRINT_SRC_AND_LOC; |
7815 | } | |
7816 | ||
4a64f543 MS |
7817 | /* Implement the "print_one" breakpoint_ops method for fork |
7818 | catchpoints. */ | |
ce78b96d JB |
7819 | |
7820 | static void | |
a6d9a66e | 7821 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7822 | { |
e29a4733 | 7823 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7824 | struct value_print_options opts; |
79a45e25 | 7825 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7826 | |
7827 | get_user_print_options (&opts); | |
7828 | ||
4a64f543 MS |
7829 | /* Field 4, the address, is omitted (which makes the columns not |
7830 | line up too nicely with the headers, but the effect is relatively | |
7831 | readable). */ | |
79a45b7d | 7832 | if (opts.addressprint) |
112e8700 | 7833 | uiout->field_skip ("addr"); |
ce78b96d | 7834 | annotate_field (5); |
112e8700 | 7835 | uiout->text ("fork"); |
d7e15655 | 7836 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7837 | { |
112e8700 | 7838 | uiout->text (", process "); |
381befee | 7839 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7840 | uiout->spaces (1); |
ce78b96d | 7841 | } |
8ac3646f | 7842 | |
112e8700 SM |
7843 | if (uiout->is_mi_like_p ()) |
7844 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7845 | } |
7846 | ||
7847 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7848 | catchpoints. */ | |
7849 | ||
7850 | static void | |
7851 | print_mention_catch_fork (struct breakpoint *b) | |
7852 | { | |
7853 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7854 | } | |
7855 | ||
6149aea9 PA |
7856 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7857 | catchpoints. */ | |
7858 | ||
7859 | static void | |
7860 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7861 | { | |
7862 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7863 | print_recreate_thread (b, fp); |
6149aea9 PA |
7864 | } |
7865 | ||
ce78b96d JB |
7866 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7867 | ||
2060206e | 7868 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7869 | |
4a64f543 MS |
7870 | /* Implement the "insert" breakpoint_ops method for vfork |
7871 | catchpoints. */ | |
ce78b96d | 7872 | |
77b06cd7 TJB |
7873 | static int |
7874 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7875 | { |
e99b03dc | 7876 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7877 | } |
7878 | ||
4a64f543 MS |
7879 | /* Implement the "remove" breakpoint_ops method for vfork |
7880 | catchpoints. */ | |
ce78b96d JB |
7881 | |
7882 | static int | |
73971819 | 7883 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7884 | { |
e99b03dc | 7885 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7886 | } |
7887 | ||
7888 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7889 | catchpoints. */ | |
7890 | ||
7891 | static int | |
f1310107 | 7892 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7893 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7894 | const struct target_waitstatus *ws) |
ce78b96d | 7895 | { |
e29a4733 PA |
7896 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7897 | ||
f90263c1 TT |
7898 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7899 | return 0; | |
7900 | ||
7901 | c->forked_inferior_pid = ws->value.related_pid; | |
7902 | return 1; | |
ce78b96d JB |
7903 | } |
7904 | ||
4a64f543 MS |
7905 | /* Implement the "print_it" breakpoint_ops method for vfork |
7906 | catchpoints. */ | |
ce78b96d JB |
7907 | |
7908 | static enum print_stop_action | |
348d480f | 7909 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7910 | { |
36dfb11c | 7911 | struct ui_out *uiout = current_uiout; |
348d480f | 7912 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7913 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7914 | ||
ce78b96d | 7915 | annotate_catchpoint (b->number); |
f303dbd6 | 7916 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7917 | if (b->disposition == disp_del) |
112e8700 | 7918 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7919 | else |
112e8700 SM |
7920 | uiout->text ("Catchpoint "); |
7921 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7922 | { |
112e8700 SM |
7923 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7924 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7925 | } |
381befee | 7926 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7927 | uiout->text (" (vforked process "); |
381befee | 7928 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7929 | uiout->text ("), "); |
ce78b96d JB |
7930 | return PRINT_SRC_AND_LOC; |
7931 | } | |
7932 | ||
4a64f543 MS |
7933 | /* Implement the "print_one" breakpoint_ops method for vfork |
7934 | catchpoints. */ | |
ce78b96d JB |
7935 | |
7936 | static void | |
a6d9a66e | 7937 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7938 | { |
e29a4733 | 7939 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7940 | struct value_print_options opts; |
79a45e25 | 7941 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7942 | |
7943 | get_user_print_options (&opts); | |
4a64f543 MS |
7944 | /* Field 4, the address, is omitted (which makes the columns not |
7945 | line up too nicely with the headers, but the effect is relatively | |
7946 | readable). */ | |
79a45b7d | 7947 | if (opts.addressprint) |
112e8700 | 7948 | uiout->field_skip ("addr"); |
ce78b96d | 7949 | annotate_field (5); |
112e8700 | 7950 | uiout->text ("vfork"); |
d7e15655 | 7951 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7952 | { |
112e8700 | 7953 | uiout->text (", process "); |
381befee | 7954 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7955 | uiout->spaces (1); |
ce78b96d | 7956 | } |
8ac3646f | 7957 | |
112e8700 SM |
7958 | if (uiout->is_mi_like_p ()) |
7959 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7960 | } |
7961 | ||
7962 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7963 | catchpoints. */ | |
7964 | ||
7965 | static void | |
7966 | print_mention_catch_vfork (struct breakpoint *b) | |
7967 | { | |
7968 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7969 | } | |
7970 | ||
6149aea9 PA |
7971 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7972 | catchpoints. */ | |
7973 | ||
7974 | static void | |
7975 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7976 | { | |
7977 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7978 | print_recreate_thread (b, fp); |
6149aea9 PA |
7979 | } |
7980 | ||
ce78b96d JB |
7981 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7982 | ||
2060206e | 7983 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7984 | |
edcc5120 | 7985 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7986 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7987 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7988 | ||
c1fc2657 | 7989 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7990 | { |
c1fc2657 | 7991 | ~solib_catchpoint () override; |
edcc5120 TT |
7992 | |
7993 | /* True for "catch load", false for "catch unload". */ | |
b650a282 | 7994 | bool is_load; |
edcc5120 TT |
7995 | |
7996 | /* Regular expression to match, if any. COMPILED is only valid when | |
7997 | REGEX is non-NULL. */ | |
7998 | char *regex; | |
2d7cc5c7 | 7999 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
8000 | }; |
8001 | ||
c1fc2657 | 8002 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 8003 | { |
c1fc2657 | 8004 | xfree (this->regex); |
edcc5120 TT |
8005 | } |
8006 | ||
8007 | static int | |
8008 | insert_catch_solib (struct bp_location *ignore) | |
8009 | { | |
8010 | return 0; | |
8011 | } | |
8012 | ||
8013 | static int | |
73971819 | 8014 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
8015 | { |
8016 | return 0; | |
8017 | } | |
8018 | ||
8019 | static int | |
8020 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 8021 | const address_space *aspace, |
edcc5120 TT |
8022 | CORE_ADDR bp_addr, |
8023 | const struct target_waitstatus *ws) | |
8024 | { | |
8025 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
edcc5120 TT |
8026 | |
8027 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8028 | return 1; | |
8029 | ||
43892fdf | 8030 | for (breakpoint *other : all_breakpoints ()) |
01add95b SM |
8031 | { |
8032 | if (other == bl->owner) | |
8033 | continue; | |
edcc5120 | 8034 | |
01add95b SM |
8035 | if (other->type != bp_shlib_event) |
8036 | continue; | |
edcc5120 | 8037 | |
01add95b SM |
8038 | if (self->pspace != NULL && other->pspace != self->pspace) |
8039 | continue; | |
edcc5120 | 8040 | |
01add95b SM |
8041 | for (bp_location *other_bl : other->locations ()) |
8042 | { | |
8043 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8044 | return 1; | |
8045 | } | |
8046 | } | |
edcc5120 TT |
8047 | |
8048 | return 0; | |
8049 | } | |
8050 | ||
8051 | static void | |
8052 | check_status_catch_solib (struct bpstats *bs) | |
8053 | { | |
8054 | struct solib_catchpoint *self | |
8055 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
8056 | |
8057 | if (self->is_load) | |
8058 | { | |
52941706 | 8059 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
8060 | { |
8061 | if (!self->regex | |
2d7cc5c7 | 8062 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8063 | return; |
8064 | } | |
8065 | } | |
8066 | else | |
8067 | { | |
6fb16ce6 | 8068 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8069 | { |
8070 | if (!self->regex | |
6fb16ce6 | 8071 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8072 | return; |
8073 | } | |
8074 | } | |
8075 | ||
8076 | bs->stop = 0; | |
8077 | bs->print_it = print_it_noop; | |
8078 | } | |
8079 | ||
8080 | static enum print_stop_action | |
8081 | print_it_catch_solib (bpstat bs) | |
8082 | { | |
8083 | struct breakpoint *b = bs->breakpoint_at; | |
8084 | struct ui_out *uiout = current_uiout; | |
8085 | ||
8086 | annotate_catchpoint (b->number); | |
f303dbd6 | 8087 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8088 | if (b->disposition == disp_del) |
112e8700 | 8089 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8090 | else |
112e8700 | 8091 | uiout->text ("Catchpoint "); |
381befee | 8092 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8093 | uiout->text ("\n"); |
8094 | if (uiout->is_mi_like_p ()) | |
8095 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8096 | print_solib_event (1); |
8097 | return PRINT_SRC_AND_LOC; | |
8098 | } | |
8099 | ||
8100 | static void | |
8101 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8102 | { | |
8103 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8104 | struct value_print_options opts; | |
8105 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8106 | |
8107 | get_user_print_options (&opts); | |
8108 | /* Field 4, the address, is omitted (which makes the columns not | |
8109 | line up too nicely with the headers, but the effect is relatively | |
8110 | readable). */ | |
8111 | if (opts.addressprint) | |
8112 | { | |
8113 | annotate_field (4); | |
112e8700 | 8114 | uiout->field_skip ("addr"); |
edcc5120 TT |
8115 | } |
8116 | ||
528e1572 | 8117 | std::string msg; |
edcc5120 TT |
8118 | annotate_field (5); |
8119 | if (self->is_load) | |
8120 | { | |
8121 | if (self->regex) | |
528e1572 | 8122 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8123 | else |
528e1572 | 8124 | msg = _("load of library"); |
edcc5120 TT |
8125 | } |
8126 | else | |
8127 | { | |
8128 | if (self->regex) | |
528e1572 | 8129 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8130 | else |
528e1572 | 8131 | msg = _("unload of library"); |
edcc5120 | 8132 | } |
112e8700 | 8133 | uiout->field_string ("what", msg); |
8ac3646f | 8134 | |
112e8700 SM |
8135 | if (uiout->is_mi_like_p ()) |
8136 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8137 | } |
8138 | ||
8139 | static void | |
8140 | print_mention_catch_solib (struct breakpoint *b) | |
8141 | { | |
8142 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8143 | ||
8144 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8145 | self->is_load ? "load" : "unload"); | |
8146 | } | |
8147 | ||
8148 | static void | |
8149 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8150 | { | |
8151 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8152 | ||
8153 | fprintf_unfiltered (fp, "%s %s", | |
8154 | b->disposition == disp_del ? "tcatch" : "catch", | |
8155 | self->is_load ? "load" : "unload"); | |
8156 | if (self->regex) | |
8157 | fprintf_unfiltered (fp, " %s", self->regex); | |
8158 | fprintf_unfiltered (fp, "\n"); | |
8159 | } | |
8160 | ||
8161 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8162 | ||
b650a282 | 8163 | /* See breakpoint.h. */ |
edcc5120 | 8164 | |
91985142 | 8165 | void |
b650a282 | 8166 | add_solib_catchpoint (const char *arg, bool is_load, bool is_temp, bool enabled) |
edcc5120 | 8167 | { |
edcc5120 | 8168 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8169 | |
edcc5120 TT |
8170 | if (!arg) |
8171 | arg = ""; | |
f1735a53 | 8172 | arg = skip_spaces (arg); |
edcc5120 | 8173 | |
36bd8eaa | 8174 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8175 | |
8176 | if (*arg != '\0') | |
8177 | { | |
2d7cc5c7 PA |
8178 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8179 | _("Invalid regexp"))); | |
edcc5120 TT |
8180 | c->regex = xstrdup (arg); |
8181 | } | |
8182 | ||
8183 | c->is_load = is_load; | |
36bd8eaa | 8184 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8185 | &catch_solib_breakpoint_ops); |
8186 | ||
c1fc2657 | 8187 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8188 | |
b270e6f9 | 8189 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8190 | } |
8191 | ||
91985142 MG |
8192 | /* A helper function that does all the work for "catch load" and |
8193 | "catch unload". */ | |
8194 | ||
8195 | static void | |
eb4c3f4a | 8196 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8197 | struct cmd_list_element *command) |
8198 | { | |
91985142 | 8199 | const int enabled = 1; |
0f8e2034 | 8200 | bool temp = command->context () == CATCH_TEMPORARY; |
91985142 | 8201 | |
b650a282 | 8202 | add_solib_catchpoint (arg, is_load, temp, enabled); |
91985142 MG |
8203 | } |
8204 | ||
edcc5120 | 8205 | static void |
eb4c3f4a | 8206 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8207 | struct cmd_list_element *command) |
8208 | { | |
8209 | catch_load_or_unload (arg, from_tty, 1, command); | |
8210 | } | |
8211 | ||
8212 | static void | |
eb4c3f4a | 8213 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8214 | struct cmd_list_element *command) |
8215 | { | |
8216 | catch_load_or_unload (arg, from_tty, 0, command); | |
8217 | } | |
8218 | ||
b650a282 | 8219 | /* See breakpoint.h. */ |
ce78b96d | 8220 | |
ab04a2af | 8221 | void |
346774a9 | 8222 | init_catchpoint (struct breakpoint *b, |
b650a282 | 8223 | struct gdbarch *gdbarch, bool temp, |
63160a43 | 8224 | const char *cond_string, |
c0a91b2b | 8225 | const struct breakpoint_ops *ops) |
c906108c | 8226 | { |
51abb421 | 8227 | symtab_and_line sal; |
6c95b8df | 8228 | sal.pspace = current_program_space; |
c5aa993b | 8229 | |
28010a5d | 8230 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8231 | |
1b36a34b | 8232 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b650a282 | 8233 | b->disposition = temp ? disp_del : disp_donttouch; |
346774a9 PA |
8234 | } |
8235 | ||
28010a5d | 8236 | void |
b270e6f9 | 8237 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8238 | { |
b270e6f9 | 8239 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8240 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8241 | if (is_tracepoint (b)) |
8242 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8243 | if (!internal) |
8244 | mention (b); | |
76727919 | 8245 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8246 | |
8247 | if (update_gll) | |
44702360 | 8248 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8249 | } |
8250 | ||
9b70b993 | 8251 | static void |
a6d9a66e | 8252 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
b650a282 | 8253 | bool temp, const char *cond_string, |
dda83cd7 | 8254 | const struct breakpoint_ops *ops) |
c906108c | 8255 | { |
b270e6f9 | 8256 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8257 | |
b650a282 | 8258 | init_catchpoint (c.get (), gdbarch, temp, cond_string, ops); |
e29a4733 PA |
8259 | |
8260 | c->forked_inferior_pid = null_ptid; | |
8261 | ||
b270e6f9 | 8262 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8263 | } |
8264 | ||
fe798b75 JB |
8265 | /* Exec catchpoints. */ |
8266 | ||
b4d90040 | 8267 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8268 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8269 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8270 | ||
c1fc2657 | 8271 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8272 | { |
c1fc2657 | 8273 | ~exec_catchpoint () override; |
b4d90040 PA |
8274 | |
8275 | /* Filename of a program whose exec triggered this catchpoint. | |
8276 | This field is only valid immediately after this catchpoint has | |
8277 | triggered. */ | |
8278 | char *exec_pathname; | |
8279 | }; | |
8280 | ||
c1fc2657 | 8281 | /* Exec catchpoint destructor. */ |
b4d90040 | 8282 | |
c1fc2657 | 8283 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8284 | { |
c1fc2657 | 8285 | xfree (this->exec_pathname); |
b4d90040 PA |
8286 | } |
8287 | ||
77b06cd7 TJB |
8288 | static int |
8289 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8290 | { |
e99b03dc | 8291 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8292 | } |
c906108c | 8293 | |
fe798b75 | 8294 | static int |
73971819 | 8295 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8296 | { |
e99b03dc | 8297 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8298 | } |
c906108c | 8299 | |
fe798b75 | 8300 | static int |
f1310107 | 8301 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8302 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8303 | const struct target_waitstatus *ws) |
fe798b75 | 8304 | { |
b4d90040 PA |
8305 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8306 | ||
f90263c1 TT |
8307 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8308 | return 0; | |
8309 | ||
8310 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8311 | return 1; | |
fe798b75 | 8312 | } |
c906108c | 8313 | |
fe798b75 | 8314 | static enum print_stop_action |
348d480f | 8315 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8316 | { |
36dfb11c | 8317 | struct ui_out *uiout = current_uiout; |
348d480f | 8318 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8319 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8320 | ||
fe798b75 | 8321 | annotate_catchpoint (b->number); |
f303dbd6 | 8322 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8323 | if (b->disposition == disp_del) |
112e8700 | 8324 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8325 | else |
112e8700 SM |
8326 | uiout->text ("Catchpoint "); |
8327 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8328 | { |
112e8700 SM |
8329 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8330 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8331 | } |
381befee | 8332 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8333 | uiout->text (" (exec'd "); |
8334 | uiout->field_string ("new-exec", c->exec_pathname); | |
8335 | uiout->text ("), "); | |
36dfb11c | 8336 | |
fe798b75 | 8337 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8338 | } |
8339 | ||
fe798b75 | 8340 | static void |
a6d9a66e | 8341 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8342 | { |
b4d90040 | 8343 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8344 | struct value_print_options opts; |
79a45e25 | 8345 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8346 | |
8347 | get_user_print_options (&opts); | |
8348 | ||
8349 | /* Field 4, the address, is omitted (which makes the columns | |
8350 | not line up too nicely with the headers, but the effect | |
8351 | is relatively readable). */ | |
8352 | if (opts.addressprint) | |
112e8700 | 8353 | uiout->field_skip ("addr"); |
fe798b75 | 8354 | annotate_field (5); |
112e8700 | 8355 | uiout->text ("exec"); |
b4d90040 | 8356 | if (c->exec_pathname != NULL) |
fe798b75 | 8357 | { |
112e8700 SM |
8358 | uiout->text (", program \""); |
8359 | uiout->field_string ("what", c->exec_pathname); | |
8360 | uiout->text ("\" "); | |
fe798b75 | 8361 | } |
8ac3646f | 8362 | |
112e8700 SM |
8363 | if (uiout->is_mi_like_p ()) |
8364 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8365 | } |
8366 | ||
8367 | static void | |
8368 | print_mention_catch_exec (struct breakpoint *b) | |
8369 | { | |
8370 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8371 | } | |
8372 | ||
6149aea9 PA |
8373 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8374 | catchpoints. */ | |
8375 | ||
8376 | static void | |
8377 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8378 | { | |
8379 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8380 | print_recreate_thread (b, fp); |
6149aea9 PA |
8381 | } |
8382 | ||
2060206e | 8383 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8384 | |
c906108c | 8385 | static int |
fba45db2 | 8386 | hw_breakpoint_used_count (void) |
c906108c | 8387 | { |
c906108c SS |
8388 | int i = 0; |
8389 | ||
43892fdf | 8390 | for (breakpoint *b : all_breakpoints ()) |
d6b74ac4 | 8391 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
40cb8ca5 | 8392 | for (bp_location *bl : b->locations ()) |
f1310107 TJB |
8393 | { |
8394 | /* Special types of hardware breakpoints may use more than | |
8395 | one register. */ | |
348d480f | 8396 | i += b->ops->resources_needed (bl); |
f1310107 | 8397 | } |
c906108c SS |
8398 | |
8399 | return i; | |
8400 | } | |
8401 | ||
a1398e0c PA |
8402 | /* Returns the resources B would use if it were a hardware |
8403 | watchpoint. */ | |
8404 | ||
c906108c | 8405 | static int |
a1398e0c | 8406 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8407 | { |
c906108c SS |
8408 | int i = 0; |
8409 | ||
a1398e0c PA |
8410 | if (!breakpoint_enabled (b)) |
8411 | return 0; | |
8412 | ||
40cb8ca5 | 8413 | for (bp_location *bl : b->locations ()) |
a1398e0c PA |
8414 | { |
8415 | /* Special types of hardware watchpoints may use more than | |
8416 | one register. */ | |
8417 | i += b->ops->resources_needed (bl); | |
8418 | } | |
8419 | ||
8420 | return i; | |
8421 | } | |
8422 | ||
8423 | /* Returns the sum the used resources of all hardware watchpoints of | |
8424 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8425 | the sum of the used resources of all hardware watchpoints of other | |
8426 | types _not_ TYPE. */ | |
8427 | ||
8428 | static int | |
8429 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8430 | enum bptype type, int *other_type_used) | |
8431 | { | |
8432 | int i = 0; | |
a1398e0c | 8433 | |
c906108c | 8434 | *other_type_used = 0; |
43892fdf | 8435 | for (breakpoint *b : all_breakpoints ()) |
e09342b5 | 8436 | { |
a1398e0c PA |
8437 | if (b == except) |
8438 | continue; | |
e09342b5 TJB |
8439 | if (!breakpoint_enabled (b)) |
8440 | continue; | |
8441 | ||
a1398e0c PA |
8442 | if (b->type == type) |
8443 | i += hw_watchpoint_use_count (b); | |
8444 | else if (is_hardware_watchpoint (b)) | |
8445 | *other_type_used = 1; | |
e09342b5 TJB |
8446 | } |
8447 | ||
c906108c SS |
8448 | return i; |
8449 | } | |
8450 | ||
c906108c | 8451 | void |
fba45db2 | 8452 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8453 | { |
43892fdf | 8454 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8455 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8456 | { |
b5de0fa7 | 8457 | b->enable_state = bp_call_disabled; |
44702360 | 8458 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b | 8459 | } |
c906108c SS |
8460 | } |
8461 | ||
8462 | void | |
fba45db2 | 8463 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8464 | { |
43892fdf | 8465 | for (breakpoint *b : all_breakpoints ()) |
cc60f2e3 | 8466 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8467 | { |
b5de0fa7 | 8468 | b->enable_state = bp_enabled; |
44702360 | 8469 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b | 8470 | } |
c906108c SS |
8471 | } |
8472 | ||
8bea4e01 UW |
8473 | void |
8474 | disable_breakpoints_before_startup (void) | |
8475 | { | |
6c95b8df | 8476 | current_program_space->executing_startup = 1; |
44702360 | 8477 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8478 | } |
8479 | ||
8480 | void | |
8481 | enable_breakpoints_after_startup (void) | |
8482 | { | |
6c95b8df | 8483 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8484 | breakpoint_re_set (); |
8bea4e01 UW |
8485 | } |
8486 | ||
7c16b83e PA |
8487 | /* Create a new single-step breakpoint for thread THREAD, with no |
8488 | locations. */ | |
c906108c | 8489 | |
7c16b83e PA |
8490 | static struct breakpoint * |
8491 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8492 | { | |
b270e6f9 | 8493 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8494 | |
b270e6f9 | 8495 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8496 | &momentary_breakpoint_ops); |
8497 | ||
8498 | b->disposition = disp_donttouch; | |
8499 | b->frame_id = null_frame_id; | |
8500 | ||
8501 | b->thread = thread; | |
8502 | gdb_assert (b->thread != 0); | |
8503 | ||
b270e6f9 | 8504 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8505 | } |
8506 | ||
8507 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8508 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8509 | frame. */ | |
c906108c | 8510 | |
454dafbd | 8511 | breakpoint_up |
a6d9a66e UW |
8512 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8513 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8514 | { |
52f0bd74 | 8515 | struct breakpoint *b; |
edb3359d | 8516 | |
193facb3 JK |
8517 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8518 | tail-called one. */ | |
8519 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8520 | |
06edf0c0 | 8521 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8522 | b->enable_state = bp_enabled; |
8523 | b->disposition = disp_donttouch; | |
818dd999 | 8524 | b->frame_id = frame_id; |
c906108c | 8525 | |
00431a78 | 8526 | b->thread = inferior_thread ()->global_num; |
c906108c | 8527 | |
44702360 | 8528 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8529 | |
454dafbd | 8530 | return breakpoint_up (b); |
c906108c | 8531 | } |
611c83ae | 8532 | |
06edf0c0 | 8533 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8534 | The new breakpoint will have type TYPE, use OPS as its |
8535 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8536 | |
06edf0c0 PA |
8537 | static struct breakpoint * |
8538 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8539 | enum bptype type, | |
a1aa2221 LM |
8540 | const struct breakpoint_ops *ops, |
8541 | int loc_enabled) | |
e58b0e63 PA |
8542 | { |
8543 | struct breakpoint *copy; | |
8544 | ||
06edf0c0 | 8545 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8546 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8547 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8548 | |
a6d9a66e | 8549 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8550 | copy->loc->requested_address = orig->loc->requested_address; |
8551 | copy->loc->address = orig->loc->address; | |
8552 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8553 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8554 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8555 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8556 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8557 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8558 | copy->frame_id = orig->frame_id; |
8559 | copy->thread = orig->thread; | |
6c95b8df | 8560 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8561 | |
8562 | copy->enable_state = bp_enabled; | |
8563 | copy->disposition = disp_donttouch; | |
8564 | copy->number = internal_breakpoint_number--; | |
8565 | ||
44702360 | 8566 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8567 | return copy; |
8568 | } | |
8569 | ||
06edf0c0 PA |
8570 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8571 | ORIG is NULL. */ | |
8572 | ||
8573 | struct breakpoint * | |
8574 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8575 | { | |
8576 | /* If there's nothing to clone, then return nothing. */ | |
8577 | if (orig == NULL) | |
8578 | return NULL; | |
8579 | ||
a1aa2221 | 8580 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8581 | } |
8582 | ||
454dafbd | 8583 | breakpoint_up |
a6d9a66e UW |
8584 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8585 | enum bptype type) | |
611c83ae PA |
8586 | { |
8587 | struct symtab_and_line sal; | |
8588 | ||
8589 | sal = find_pc_line (pc, 0); | |
8590 | sal.pc = pc; | |
8591 | sal.section = find_pc_overlay (pc); | |
8592 | sal.explicit_pc = 1; | |
8593 | ||
a6d9a66e | 8594 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8595 | } |
c906108c | 8596 | \f |
c5aa993b | 8597 | |
c906108c SS |
8598 | /* Tell the user we have just set a breakpoint B. */ |
8599 | ||
8600 | static void | |
fba45db2 | 8601 | mention (struct breakpoint *b) |
c906108c | 8602 | { |
348d480f | 8603 | b->ops->print_mention (b); |
2d33446d | 8604 | current_uiout->text ("\n"); |
c906108c | 8605 | } |
c906108c | 8606 | \f |
c5aa993b | 8607 | |
5133a315 | 8608 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8609 | |
7f32a4d5 PA |
8610 | /* Handle "set breakpoint auto-hw on". |
8611 | ||
8612 | If the explicitly specified breakpoint type is not hardware | |
8613 | breakpoint, check the memory map to see whether the breakpoint | |
8614 | address is in read-only memory. | |
8615 | ||
8616 | - location type is not hardware breakpoint, memory is read-only. | |
8617 | We change the type of the location to hardware breakpoint. | |
8618 | ||
8619 | - location type is hardware breakpoint, memory is read-write. This | |
8620 | means we've previously made the location hardware one, but then the | |
8621 | memory map changed, so we undo. | |
8622 | */ | |
8623 | ||
8624 | static void | |
8625 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8626 | { | |
8627 | if (automatic_hardware_breakpoints | |
8628 | && bl->owner->type != bp_hardware_breakpoint | |
8629 | && (bl->loc_type == bp_loc_software_breakpoint | |
8630 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8631 | { | |
8632 | /* When breakpoints are removed, remove_breakpoints will use | |
8633 | location types we've just set here, the only possible problem | |
8634 | is that memory map has changed during running program, but | |
8635 | it's not going to work anyway with current gdb. */ | |
8636 | mem_region *mr = lookup_mem_region (bl->address); | |
8637 | ||
8638 | if (mr != nullptr) | |
8639 | { | |
8640 | enum bp_loc_type new_type; | |
8641 | ||
8642 | if (mr->attrib.mode != MEM_RW) | |
8643 | new_type = bp_loc_hardware_breakpoint; | |
8644 | else | |
8645 | new_type = bp_loc_software_breakpoint; | |
8646 | ||
8647 | if (new_type != bl->loc_type) | |
8648 | { | |
8649 | static bool said = false; | |
8650 | ||
8651 | bl->loc_type = new_type; | |
8652 | if (!said) | |
8653 | { | |
8654 | fprintf_filtered (gdb_stdout, | |
8655 | _("Note: automatically using " | |
8656 | "hardware breakpoints for " | |
8657 | "read-only addresses.\n")); | |
8658 | said = true; | |
8659 | } | |
8660 | } | |
8661 | } | |
8662 | } | |
8663 | } | |
8664 | ||
0d381245 | 8665 | static struct bp_location * |
39d61571 | 8666 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8667 | const struct symtab_and_line *sal) |
8668 | { | |
8669 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8670 | CORE_ADDR adjusted_address; |
8671 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8672 | ||
8673 | if (loc_gdbarch == NULL) | |
8674 | loc_gdbarch = b->gdbarch; | |
8675 | ||
8676 | /* Adjust the breakpoint's address prior to allocating a location. | |
8677 | Once we call allocate_bp_location(), that mostly uninitialized | |
8678 | location will be placed on the location chain. Adjustment of the | |
8679 | breakpoint may cause target_read_memory() to be called and we do | |
8680 | not want its scan of the location chain to find a breakpoint and | |
8681 | location that's only been partially initialized. */ | |
8682 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8683 | sal->pc, b->type); | |
0d381245 | 8684 | |
d30113d4 | 8685 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8686 | loc = allocate_bp_location (b); |
d30113d4 JK |
8687 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8688 | tmp = &((*tmp)->next)) | |
0d381245 | 8689 | ; |
d30113d4 | 8690 | loc->next = *tmp; |
0d381245 | 8691 | *tmp = loc; |
3742cc8b | 8692 | |
0d381245 | 8693 | loc->requested_address = sal->pc; |
3742cc8b | 8694 | loc->address = adjusted_address; |
6c95b8df | 8695 | loc->pspace = sal->pspace; |
935676c9 | 8696 | loc->probe.prob = sal->prob; |
729662a5 | 8697 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8698 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8699 | loc->section = sal->section; |
3742cc8b | 8700 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8701 | loc->line_number = sal->line; |
2f202fde | 8702 | loc->symtab = sal->symtab; |
4a27f119 | 8703 | loc->symbol = sal->symbol; |
3467ec66 PA |
8704 | loc->msymbol = sal->msymbol; |
8705 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8706 | |
0ba852ab | 8707 | set_breakpoint_location_function (loc); |
1a853c52 | 8708 | |
6ae88661 LM |
8709 | /* While by definition, permanent breakpoints are already present in the |
8710 | code, we don't mark the location as inserted. Normally one would expect | |
8711 | that GDB could rely on that breakpoint instruction to stop the program, | |
8712 | thus removing the need to insert its own breakpoint, except that executing | |
8713 | the breakpoint instruction can kill the target instead of reporting a | |
8714 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8715 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8716 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8717 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8718 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8719 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8720 | it manually increments the PC, thus avoiding executing the breakpoint | |
8721 | instruction.) */ | |
1a853c52 | 8722 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8723 | loc->permanent = 1; |
1a853c52 | 8724 | |
0d381245 VP |
8725 | return loc; |
8726 | } | |
514f746b AR |
8727 | \f |
8728 | ||
5133a315 LM |
8729 | /* Return true if LOC is pointing to a permanent breakpoint, |
8730 | return false otherwise. */ | |
1cf4d951 | 8731 | |
5133a315 | 8732 | static bool |
1cf4d951 PA |
8733 | bp_loc_is_permanent (struct bp_location *loc) |
8734 | { | |
514f746b AR |
8735 | gdb_assert (loc != NULL); |
8736 | ||
cb1e4e32 PA |
8737 | /* If we have a non-breakpoint-backed catchpoint or a software |
8738 | watchpoint, just return 0. We should not attempt to read from | |
8739 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8740 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8741 | memory. */ |
cb1e4e32 | 8742 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8743 | return false; |
244558af | 8744 | |
5ed8105e | 8745 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8746 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8747 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8748 | } |
8749 | ||
e7e0cddf SS |
8750 | /* Build a command list for the dprintf corresponding to the current |
8751 | settings of the dprintf style options. */ | |
8752 | ||
8753 | static void | |
8754 | update_dprintf_command_list (struct breakpoint *b) | |
8755 | { | |
8756 | char *dprintf_args = b->extra_string; | |
8757 | char *printf_line = NULL; | |
8758 | ||
8759 | if (!dprintf_args) | |
8760 | return; | |
8761 | ||
8762 | dprintf_args = skip_spaces (dprintf_args); | |
8763 | ||
8764 | /* Allow a comma, as it may have terminated a location, but don't | |
8765 | insist on it. */ | |
8766 | if (*dprintf_args == ',') | |
8767 | ++dprintf_args; | |
8768 | dprintf_args = skip_spaces (dprintf_args); | |
8769 | ||
8770 | if (*dprintf_args != '"') | |
8771 | error (_("Bad format string, missing '\"'.")); | |
8772 | ||
d3ce09f5 | 8773 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8774 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8775 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8776 | { |
8777 | if (!dprintf_function) | |
8778 | error (_("No function supplied for dprintf call")); | |
8779 | ||
8780 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8781 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8782 | dprintf_function, | |
8783 | dprintf_channel, | |
8784 | dprintf_args); | |
8785 | else | |
8786 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8787 | dprintf_function, | |
8788 | dprintf_args); | |
8789 | } | |
d3ce09f5 SS |
8790 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8791 | { | |
8792 | if (target_can_run_breakpoint_commands ()) | |
8793 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8794 | else | |
8795 | { | |
8796 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8797 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8798 | } | |
8799 | } | |
e7e0cddf SS |
8800 | else |
8801 | internal_error (__FILE__, __LINE__, | |
8802 | _("Invalid dprintf style.")); | |
8803 | ||
f28045c2 | 8804 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8805 | |
12973681 TT |
8806 | /* Manufacture a printf sequence. */ |
8807 | struct command_line *printf_cmd_line | |
8808 | = new struct command_line (simple_control, printf_line); | |
8809 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8810 | command_lines_deleter ())); | |
e7e0cddf SS |
8811 | } |
8812 | ||
8813 | /* Update all dprintf commands, making their command lists reflect | |
8814 | current style settings. */ | |
8815 | ||
8816 | static void | |
eb4c3f4a | 8817 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8818 | struct cmd_list_element *c) |
8819 | { | |
43892fdf SM |
8820 | for (breakpoint *b : all_breakpoints ()) |
8821 | if (b->type == bp_dprintf) | |
e7e0cddf | 8822 | update_dprintf_command_list (b); |
e7e0cddf | 8823 | } |
c3f6f71d | 8824 | |
f00aae0f KS |
8825 | /* Create a breakpoint with SAL as location. Use LOCATION |
8826 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8827 | as condition expression. If LOCATION is NULL then create an |
8828 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8829 | |
8830 | static void | |
d9b3f62e | 8831 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8832 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8833 | event_location_up &&location, |
e1e01040 PA |
8834 | gdb::unique_xmalloc_ptr<char> filter, |
8835 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8836 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8837 | enum bptype type, enum bpdisp disposition, |
8838 | int thread, int task, int ignore_count, | |
c0a91b2b | 8839 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8840 | int enabled, int internal, unsigned flags, |
8841 | int display_canonical) | |
018d34a4 | 8842 | { |
0d381245 | 8843 | int i; |
018d34a4 VP |
8844 | |
8845 | if (type == bp_hardware_breakpoint) | |
8846 | { | |
fbbd034e AS |
8847 | int target_resources_ok; |
8848 | ||
8849 | i = hw_breakpoint_used_count (); | |
8850 | target_resources_ok = | |
8851 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8852 | i + 1, 0); |
8853 | if (target_resources_ok == 0) | |
8854 | error (_("No hardware breakpoint support in the target.")); | |
8855 | else if (target_resources_ok < 0) | |
8856 | error (_("Hardware breakpoints used exceeds limit.")); | |
8857 | } | |
8858 | ||
6c5b2ebe | 8859 | gdb_assert (!sals.empty ()); |
6c95b8df | 8860 | |
6c5b2ebe | 8861 | for (const auto &sal : sals) |
0d381245 | 8862 | { |
0d381245 VP |
8863 | struct bp_location *loc; |
8864 | ||
8865 | if (from_tty) | |
5af949e3 UW |
8866 | { |
8867 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8868 | if (!loc_gdbarch) | |
8869 | loc_gdbarch = gdbarch; | |
8870 | ||
8871 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8872 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8873 | } |
0d381245 | 8874 | |
6c5b2ebe | 8875 | if (&sal == &sals[0]) |
0d381245 | 8876 | { |
d9b3f62e | 8877 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8878 | b->thread = thread; |
4a306c9a | 8879 | b->task = task; |
855a6e68 | 8880 | |
e1e01040 PA |
8881 | b->cond_string = cond_string.release (); |
8882 | b->extra_string = extra_string.release (); | |
0d381245 | 8883 | b->ignore_count = ignore_count; |
41447f92 | 8884 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8885 | b->disposition = disposition; |
6c95b8df | 8886 | |
44f238bb PA |
8887 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8888 | b->loc->inserted = 1; | |
8889 | ||
0fb4aa4b PA |
8890 | if (type == bp_static_tracepoint) |
8891 | { | |
d9b3f62e | 8892 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8893 | struct static_tracepoint_marker marker; |
8894 | ||
983af33b | 8895 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8896 | { |
8897 | /* We already know the marker exists, otherwise, we | |
8898 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8899 | const char *p |
8900 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8901 | const char *endp; |
0fb4aa4b | 8902 | |
f1735a53 | 8903 | p = skip_spaces (p); |
0fb4aa4b | 8904 | |
f1735a53 | 8905 | endp = skip_to_space (p); |
0fb4aa4b | 8906 | |
5d9310c4 | 8907 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8908 | |
3e43a32a MS |
8909 | printf_filtered (_("Probed static tracepoint " |
8910 | "marker \"%s\"\n"), | |
5d9310c4 | 8911 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8912 | } |
8913 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8914 | { | |
5d9310c4 | 8915 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8916 | |
3e43a32a MS |
8917 | printf_filtered (_("Probed static tracepoint " |
8918 | "marker \"%s\"\n"), | |
5d9310c4 | 8919 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8920 | } |
8921 | else | |
3e43a32a MS |
8922 | warning (_("Couldn't determine the static " |
8923 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8924 | } |
8925 | ||
0d381245 VP |
8926 | loc = b->loc; |
8927 | } | |
8928 | else | |
018d34a4 | 8929 | { |
39d61571 | 8930 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8931 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8932 | loc->inserted = 1; | |
0d381245 VP |
8933 | } |
8934 | ||
b5fa468f TBA |
8935 | /* Do not set breakpoint locations conditions yet. As locations |
8936 | are inserted, they get sorted based on their addresses. Let | |
8937 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8938 | |
8939 | /* Dynamic printf requires and uses additional arguments on the | |
8940 | command line, otherwise it's an error. */ | |
8941 | if (type == bp_dprintf) | |
8942 | { | |
8943 | if (b->extra_string) | |
8944 | update_dprintf_command_list (b); | |
8945 | else | |
8946 | error (_("Format string required")); | |
8947 | } | |
8948 | else if (b->extra_string) | |
588ae58c | 8949 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8950 | } |
018d34a4 | 8951 | |
b5fa468f TBA |
8952 | |
8953 | /* The order of the locations is now stable. Set the location | |
8954 | condition using the location's number. */ | |
8955 | int loc_num = 1; | |
40cb8ca5 | 8956 | for (bp_location *loc : b->locations ()) |
b5fa468f TBA |
8957 | { |
8958 | if (b->cond_string != nullptr) | |
8959 | set_breakpoint_location_condition (b->cond_string, loc, b->number, | |
8960 | loc_num); | |
8961 | ||
8962 | ++loc_num; | |
8963 | } | |
8964 | ||
56435ebe | 8965 | b->display_canonical = display_canonical; |
f00aae0f | 8966 | if (location != NULL) |
d28cd78a | 8967 | b->location = std::move (location); |
018d34a4 | 8968 | else |
d28cd78a | 8969 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8970 | b->filter = std::move (filter); |
d9b3f62e | 8971 | } |
018d34a4 | 8972 | |
d9b3f62e PA |
8973 | static void |
8974 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8975 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8976 | event_location_up &&location, |
e1e01040 PA |
8977 | gdb::unique_xmalloc_ptr<char> filter, |
8978 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8979 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8980 | enum bptype type, enum bpdisp disposition, |
8981 | int thread, int task, int ignore_count, | |
c0a91b2b | 8982 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8983 | int enabled, int internal, unsigned flags, |
8984 | int display_canonical) | |
d9b3f62e | 8985 | { |
a5e364af | 8986 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8987 | |
a5e364af | 8988 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8989 | sals, std::move (location), |
e1e01040 PA |
8990 | std::move (filter), |
8991 | std::move (cond_string), | |
8992 | std::move (extra_string), | |
d9b3f62e PA |
8993 | type, disposition, |
8994 | thread, task, ignore_count, | |
8995 | ops, from_tty, | |
44f238bb PA |
8996 | enabled, internal, flags, |
8997 | display_canonical); | |
d9b3f62e | 8998 | |
b270e6f9 | 8999 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
9000 | } |
9001 | ||
9002 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9003 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9004 | value. COND_STRING, if not NULL, specified the condition to be | |
9005 | used for all breakpoints. Essentially the only case where | |
9006 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9007 | function. In that case, it's still not possible to specify | |
9008 | separate conditions for different overloaded functions, so | |
9009 | we take just a single condition string. | |
9010 | ||
c3f6f71d | 9011 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9012 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9013 | array contents). If the function fails (error() is called), the |
9014 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9015 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9016 | |
9017 | static void | |
8cdf0e15 | 9018 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9019 | struct linespec_result *canonical, |
e1e01040 PA |
9020 | gdb::unique_xmalloc_ptr<char> cond_string, |
9021 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9022 | enum bptype type, enum bpdisp disposition, |
9023 | int thread, int task, int ignore_count, | |
c0a91b2b | 9024 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9025 | int enabled, int internal, unsigned flags) |
c906108c | 9026 | { |
f8eba3c6 | 9027 | if (canonical->pre_expanded) |
6c5b2ebe | 9028 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9029 | |
6c5b2ebe | 9030 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9031 | { |
f00aae0f | 9032 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9033 | 'break', without arguments. */ |
ffc2605c | 9034 | event_location_up location |
f00aae0f | 9035 | = (canonical->location != NULL |
8e9e35b1 | 9036 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9037 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9038 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9039 | |
6c5b2ebe | 9040 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9041 | std::move (location), |
e1e01040 PA |
9042 | std::move (filter_string), |
9043 | std::move (cond_string), | |
9044 | std::move (extra_string), | |
e7e0cddf | 9045 | type, disposition, |
84f4c1fe | 9046 | thread, task, ignore_count, ops, |
44f238bb | 9047 | from_tty, enabled, internal, flags, |
56435ebe | 9048 | canonical->special_display); |
c3f6f71d | 9049 | } |
c3f6f71d | 9050 | } |
c906108c | 9051 | |
f00aae0f | 9052 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9053 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9054 | addresses found. LOCATION points to the end of the SAL (for |
9055 | linespec locations). | |
9998af43 TJB |
9056 | |
9057 | The array and the line spec strings are allocated on the heap, it is | |
9058 | the caller's responsibility to free them. */ | |
c906108c | 9059 | |
b9362cc7 | 9060 | static void |
626d2320 | 9061 | parse_breakpoint_sals (struct event_location *location, |
58438ac1 | 9062 | struct linespec_result *canonical) |
c3f6f71d | 9063 | { |
f00aae0f KS |
9064 | struct symtab_and_line cursal; |
9065 | ||
9066 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9067 | { | |
a20714ff | 9068 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9069 | |
a20714ff | 9070 | if (spec == NULL) |
f00aae0f KS |
9071 | { |
9072 | /* The last displayed codepoint, if it's valid, is our default | |
9073 | breakpoint address. */ | |
9074 | if (last_displayed_sal_is_valid ()) | |
9075 | { | |
f00aae0f KS |
9076 | /* Set sal's pspace, pc, symtab, and line to the values |
9077 | corresponding to the last call to print_frame_info. | |
9078 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9079 | as the breakpoint line number is inappropriate otherwise. | |
9080 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9081 | symtab_and_line sal = get_last_displayed_sal (); |
9082 | CORE_ADDR pc = sal.pc; | |
9083 | ||
f00aae0f KS |
9084 | sal = find_pc_line (pc, 0); |
9085 | ||
9086 | /* "break" without arguments is equivalent to "break *PC" | |
9087 | where PC is the last displayed codepoint's address. So | |
9088 | make sure to set sal.explicit_pc to prevent GDB from | |
9089 | trying to expand the list of sals to include all other | |
9090 | instances with the same symtab and line. */ | |
9091 | sal.pc = pc; | |
9092 | sal.explicit_pc = 1; | |
9093 | ||
6c5b2ebe PA |
9094 | struct linespec_sals lsal; |
9095 | lsal.sals = {sal}; | |
f00aae0f KS |
9096 | lsal.canonical = NULL; |
9097 | ||
6c5b2ebe | 9098 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9099 | return; |
9100 | } | |
9101 | else | |
9102 | error (_("No default breakpoint address now.")); | |
c906108c | 9103 | } |
c906108c | 9104 | } |
f00aae0f KS |
9105 | |
9106 | /* Force almost all breakpoints to be in terms of the | |
9107 | current_source_symtab (which is decode_line_1's default). | |
9108 | This should produce the results we want almost all of the | |
9109 | time while leaving default_breakpoint_* alone. | |
9110 | ||
9111 | ObjC: However, don't match an Objective-C method name which | |
9112 | may have a '+' or '-' succeeded by a '['. */ | |
9113 | cursal = get_current_source_symtab_and_line (); | |
9114 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9115 | { |
a20714ff | 9116 | const char *spec = NULL; |
cc80f267 | 9117 | |
f00aae0f | 9118 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9119 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9120 | |
f00aae0f | 9121 | if (!cursal.symtab |
a20714ff PA |
9122 | || (spec != NULL |
9123 | && strchr ("+-", spec[0]) != NULL | |
9124 | && spec[1] != '[')) | |
f00aae0f | 9125 | { |
c2f4122d | 9126 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9127 | get_last_displayed_symtab (), |
9128 | get_last_displayed_line (), | |
9129 | canonical, NULL, NULL); | |
9130 | return; | |
9131 | } | |
c906108c | 9132 | } |
f00aae0f | 9133 | |
c2f4122d | 9134 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9135 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9136 | } |
c906108c | 9137 | |
c906108c | 9138 | |
c3f6f71d | 9139 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9140 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9141 | |
b9362cc7 | 9142 | static void |
6c5b2ebe | 9143 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9144 | { |
6c5b2ebe PA |
9145 | for (auto &sal : sals) |
9146 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9147 | } |
9148 | ||
7a697b8d SS |
9149 | /* Fast tracepoints may have restrictions on valid locations. For |
9150 | instance, a fast tracepoint using a jump instead of a trap will | |
9151 | likely have to overwrite more bytes than a trap would, and so can | |
9152 | only be placed where the instruction is longer than the jump, or a | |
9153 | multi-instruction sequence does not have a jump into the middle of | |
9154 | it, etc. */ | |
9155 | ||
9156 | static void | |
9157 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9158 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9159 | { |
6c5b2ebe | 9160 | for (const auto &sal : sals) |
7a697b8d | 9161 | { |
f8eba3c6 TT |
9162 | struct gdbarch *sarch; |
9163 | ||
6c5b2ebe | 9164 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9165 | /* We fall back to GDBARCH if there is no architecture |
9166 | associated with SAL. */ | |
9167 | if (sarch == NULL) | |
9168 | sarch = gdbarch; | |
281d762b TT |
9169 | std::string msg; |
9170 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9171 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9172 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9173 | } |
9174 | } | |
9175 | ||
018d34a4 VP |
9176 | /* Given TOK, a string specification of condition and thread, as |
9177 | accepted by the 'break' command, extract the condition | |
9178 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9179 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9180 | If no condition is found, *COND_STRING is set to NULL. |
9181 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9182 | |
9183 | static void | |
bbc13ae3 | 9184 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9185 | char **cond_string, int *thread, int *task, |
9186 | char **rest) | |
018d34a4 VP |
9187 | { |
9188 | *cond_string = NULL; | |
9189 | *thread = -1; | |
ed1d1739 KS |
9190 | *task = 0; |
9191 | *rest = NULL; | |
733d554a | 9192 | bool force = false; |
ed1d1739 | 9193 | |
018d34a4 VP |
9194 | while (tok && *tok) |
9195 | { | |
bbc13ae3 | 9196 | const char *end_tok; |
018d34a4 | 9197 | int toklen; |
bbc13ae3 KS |
9198 | const char *cond_start = NULL; |
9199 | const char *cond_end = NULL; | |
cc59ec59 | 9200 | |
f1735a53 | 9201 | tok = skip_spaces (tok); |
e7e0cddf SS |
9202 | |
9203 | if ((*tok == '"' || *tok == ',') && rest) | |
9204 | { | |
9205 | *rest = savestring (tok, strlen (tok)); | |
9206 | return; | |
9207 | } | |
9208 | ||
f1735a53 | 9209 | end_tok = skip_to_space (tok); |
d634f2de | 9210 | |
018d34a4 | 9211 | toklen = end_tok - tok; |
d634f2de | 9212 | |
018d34a4 VP |
9213 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9214 | { | |
9215 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
9216 | try |
9217 | { | |
9218 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
9219 | } | |
9220 | catch (const gdb_exception_error &) | |
9221 | { | |
9222 | if (!force) | |
9223 | throw; | |
9224 | else | |
9225 | tok = tok + strlen (tok); | |
9226 | } | |
018d34a4 | 9227 | cond_end = tok; |
d634f2de | 9228 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 | 9229 | } |
733d554a TBA |
9230 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
9231 | { | |
5759831a | 9232 | tok = tok + toklen; |
733d554a TBA |
9233 | force = true; |
9234 | } | |
018d34a4 VP |
9235 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
9236 | { | |
5d5658a1 PA |
9237 | const char *tmptok; |
9238 | struct thread_info *thr; | |
d634f2de | 9239 | |
018d34a4 | 9240 | tok = end_tok + 1; |
5d5658a1 | 9241 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9242 | if (tok == tmptok) |
9243 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9244 | *thread = thr->global_num; |
bbc13ae3 | 9245 | tok = tmptok; |
018d34a4 | 9246 | } |
4a306c9a JB |
9247 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9248 | { | |
9249 | char *tmptok; | |
9250 | ||
9251 | tok = end_tok + 1; | |
bbc13ae3 | 9252 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9253 | if (tok == tmptok) |
9254 | error (_("Junk after task keyword.")); | |
9255 | if (!valid_task_id (*task)) | |
b6199126 | 9256 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9257 | tok = tmptok; |
4a306c9a | 9258 | } |
e7e0cddf SS |
9259 | else if (rest) |
9260 | { | |
9261 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9262 | return; |
e7e0cddf | 9263 | } |
018d34a4 VP |
9264 | else |
9265 | error (_("Junk at end of arguments.")); | |
9266 | } | |
9267 | } | |
9268 | ||
b5fa468f TBA |
9269 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
9270 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
9271 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
9272 | for the description of these parameters and INPUT. */ | |
9273 | ||
9274 | static void | |
9275 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
9276 | const char *input, char **cond_string, | |
9277 | int *thread, int *task, char **rest) | |
9278 | { | |
9279 | int num_failures = 0; | |
9280 | for (auto &sal : sals) | |
9281 | { | |
9282 | char *cond = nullptr; | |
9283 | int thread_id = 0; | |
9284 | int task_id = 0; | |
9285 | char *remaining = nullptr; | |
9286 | ||
9287 | /* Here we want to parse 'arg' to separate condition from thread | |
9288 | number. But because parsing happens in a context and the | |
9289 | contexts of sals might be different, try each until there is | |
9290 | success. Finding one successful parse is sufficient for our | |
9291 | goal. When setting the breakpoint we'll re-parse the | |
9292 | condition in the context of each sal. */ | |
9293 | try | |
9294 | { | |
9295 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
9296 | &task_id, &remaining); | |
9297 | *cond_string = cond; | |
9298 | *thread = thread_id; | |
9299 | *task = task_id; | |
9300 | *rest = remaining; | |
9301 | break; | |
9302 | } | |
9303 | catch (const gdb_exception_error &e) | |
9304 | { | |
9305 | num_failures++; | |
9306 | /* If no sal remains, do not continue. */ | |
9307 | if (num_failures == sals.size ()) | |
9308 | throw; | |
9309 | } | |
9310 | } | |
9311 | } | |
9312 | ||
0fb4aa4b PA |
9313 | /* Decode a static tracepoint marker spec. */ |
9314 | ||
6c5b2ebe | 9315 | static std::vector<symtab_and_line> |
f00aae0f | 9316 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9317 | { |
f00aae0f KS |
9318 | const char *p = &(*arg_p)[3]; |
9319 | const char *endp; | |
0fb4aa4b | 9320 | |
f1735a53 | 9321 | p = skip_spaces (p); |
0fb4aa4b | 9322 | |
f1735a53 | 9323 | endp = skip_to_space (p); |
0fb4aa4b | 9324 | |
81b1e71c | 9325 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9326 | |
5d9310c4 SM |
9327 | std::vector<static_tracepoint_marker> markers |
9328 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9329 | if (markers.empty ()) | |
81b1e71c TT |
9330 | error (_("No known static tracepoint marker named %s"), |
9331 | marker_str.c_str ()); | |
0fb4aa4b | 9332 | |
6c5b2ebe | 9333 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9334 | sals.reserve (markers.size ()); |
0fb4aa4b | 9335 | |
5d9310c4 | 9336 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9337 | { |
5d9310c4 SM |
9338 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9339 | sal.pc = marker.address; | |
6c5b2ebe | 9340 | sals.push_back (sal); |
5d9310c4 | 9341 | } |
0fb4aa4b | 9342 | |
0fb4aa4b PA |
9343 | *arg_p = endp; |
9344 | return sals; | |
9345 | } | |
9346 | ||
bac7c5cf GB |
9347 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
9348 | according to IS_TRACEPOINT. */ | |
9349 | ||
9350 | static const struct breakpoint_ops * | |
9351 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
9352 | bool is_tracepoint) | |
9353 | { | |
9354 | if (is_tracepoint) | |
9355 | { | |
9356 | if (location_type == PROBE_LOCATION) | |
9357 | return &tracepoint_probe_breakpoint_ops; | |
9358 | else | |
9359 | return &tracepoint_breakpoint_ops; | |
9360 | } | |
9361 | else | |
9362 | { | |
9363 | if (location_type == PROBE_LOCATION) | |
9364 | return &bkpt_probe_breakpoint_ops; | |
9365 | else | |
9366 | return &bkpt_breakpoint_ops; | |
9367 | } | |
9368 | } | |
9369 | ||
9370 | /* See breakpoint.h. */ | |
9371 | ||
9372 | const struct breakpoint_ops * | |
9373 | breakpoint_ops_for_event_location (const struct event_location *location, | |
9374 | bool is_tracepoint) | |
9375 | { | |
9376 | if (location != nullptr) | |
9377 | return breakpoint_ops_for_event_location_type | |
9378 | (event_location_type (location), is_tracepoint); | |
9379 | return is_tracepoint ? &tracepoint_breakpoint_ops : &bkpt_breakpoint_ops; | |
9380 | } | |
9381 | ||
f00aae0f | 9382 | /* See breakpoint.h. */ |
0101ce28 | 9383 | |
8cdf0e15 VP |
9384 | int |
9385 | create_breakpoint (struct gdbarch *gdbarch, | |
626d2320 | 9386 | struct event_location *location, |
e1e01040 PA |
9387 | const char *cond_string, |
9388 | int thread, const char *extra_string, | |
10a636cc | 9389 | bool force_condition, int parse_extra, |
0fb4aa4b | 9390 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9391 | int ignore_count, |
9392 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9393 | const struct breakpoint_ops *ops, |
44f238bb PA |
9394 | int from_tty, int enabled, int internal, |
9395 | unsigned flags) | |
c3f6f71d | 9396 | { |
7efd8fc2 | 9397 | struct linespec_result canonical; |
0101ce28 | 9398 | int pending = 0; |
4a306c9a | 9399 | int task = 0; |
86b17b60 | 9400 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9401 | |
348d480f PA |
9402 | gdb_assert (ops != NULL); |
9403 | ||
f00aae0f KS |
9404 | /* If extra_string isn't useful, set it to NULL. */ |
9405 | if (extra_string != NULL && *extra_string == '\0') | |
9406 | extra_string = NULL; | |
9407 | ||
a70b8144 | 9408 | try |
b78a6381 | 9409 | { |
f00aae0f | 9410 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9411 | } |
230d2906 | 9412 | catch (const gdb_exception_error &e) |
0101ce28 | 9413 | { |
492d29ea PA |
9414 | /* If caller is interested in rc value from parse, set |
9415 | value. */ | |
9416 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9417 | { |
05ff989b AC |
9418 | /* If pending breakpoint support is turned off, throw |
9419 | error. */ | |
fa8d40ab JJ |
9420 | |
9421 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9422 | throw; |
723a2275 VP |
9423 | |
9424 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9425 | |
dda83cd7 | 9426 | /* If pending breakpoint support is auto query and the user |
05ff989b | 9427 | selects no, then simply return the error code. */ |
059fb39f | 9428 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9429 | && !nquery (_("Make %s pending on future shared library load? "), |
9430 | bptype_string (type_wanted))) | |
fd9b8c24 | 9431 | return 0; |
fa8d40ab | 9432 | |
05ff989b AC |
9433 | /* At this point, either the user was queried about setting |
9434 | a pending breakpoint and selected yes, or pending | |
9435 | breakpoint behavior is on and thus a pending breakpoint | |
9436 | is defaulted on behalf of the user. */ | |
f00aae0f | 9437 | pending = 1; |
0101ce28 | 9438 | } |
492d29ea | 9439 | else |
eedc3f4f | 9440 | throw; |
0101ce28 | 9441 | } |
492d29ea | 9442 | |
6c5b2ebe | 9443 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9444 | return 0; |
c3f6f71d | 9445 | |
c3f6f71d JM |
9446 | /* Resolve all line numbers to PC's and verify that the addresses |
9447 | are ok for the target. */ | |
0101ce28 | 9448 | if (!pending) |
f8eba3c6 | 9449 | { |
6c5b2ebe PA |
9450 | for (auto &lsal : canonical.lsals) |
9451 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9452 | } |
c3f6f71d | 9453 | |
7a697b8d | 9454 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9455 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9456 | { |
6c5b2ebe PA |
9457 | for (const auto &lsal : canonical.lsals) |
9458 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9459 | } |
7a697b8d | 9460 | |
c3f6f71d JM |
9461 | /* Verify that condition can be parsed, before setting any |
9462 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9463 | breakpoint. */ |
0101ce28 | 9464 | if (!pending) |
c3f6f71d | 9465 | { |
e1e01040 PA |
9466 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9467 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9468 | ||
f00aae0f | 9469 | if (parse_extra) |
dda83cd7 | 9470 | { |
0878d0fa | 9471 | char *rest; |
e1e01040 | 9472 | char *cond; |
52d361e1 | 9473 | |
6c5b2ebe | 9474 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9475 | |
b5fa468f TBA |
9476 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
9477 | &cond, &thread, &task, &rest); | |
e1e01040 PA |
9478 | cond_string_copy.reset (cond); |
9479 | extra_string_copy.reset (rest); | |
dda83cd7 | 9480 | } |
2f069f6f | 9481 | else |
dda83cd7 | 9482 | { |
f00aae0f KS |
9483 | if (type_wanted != bp_dprintf |
9484 | && extra_string != NULL && *extra_string != '\0') | |
9485 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa | 9486 | |
10a636cc TBA |
9487 | /* Check the validity of the condition. We should error out |
9488 | if the condition is invalid at all of the locations and | |
9489 | if it is not forced. In the PARSE_EXTRA case above, this | |
9490 | check is done when parsing the EXTRA_STRING. */ | |
9491 | if (cond_string != nullptr && !force_condition) | |
9492 | { | |
9493 | int num_failures = 0; | |
9494 | const linespec_sals &lsal = canonical.lsals[0]; | |
9495 | for (const auto &sal : lsal.sals) | |
9496 | { | |
9497 | const char *cond = cond_string; | |
9498 | try | |
9499 | { | |
9500 | parse_exp_1 (&cond, sal.pc, block_for_pc (sal.pc), 0); | |
9501 | /* One success is sufficient to keep going. */ | |
9502 | break; | |
9503 | } | |
9504 | catch (const gdb_exception_error &) | |
9505 | { | |
9506 | num_failures++; | |
9507 | /* If this is the last sal, error out. */ | |
9508 | if (num_failures == lsal.sals.size ()) | |
9509 | throw; | |
9510 | } | |
9511 | } | |
9512 | } | |
9513 | ||
0878d0fa YQ |
9514 | /* Create a private copy of condition string. */ |
9515 | if (cond_string) | |
e1e01040 | 9516 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9517 | /* Create a private copy of any extra string. */ |
9518 | if (extra_string) | |
e1e01040 | 9519 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 9520 | } |
0fb4aa4b | 9521 | |
52d361e1 | 9522 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9523 | std::move (cond_string_copy), |
9524 | std::move (extra_string_copy), | |
9525 | type_wanted, | |
d9b3f62e PA |
9526 | tempflag ? disp_del : disp_donttouch, |
9527 | thread, task, ignore_count, ops, | |
44f238bb | 9528 | from_tty, enabled, internal, flags); |
c906108c | 9529 | } |
0101ce28 JJ |
9530 | else |
9531 | { | |
a5e364af | 9532 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9533 | |
a5e364af | 9534 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9535 | b->location = copy_event_location (location); |
bfccc43c | 9536 | |
f00aae0f KS |
9537 | if (parse_extra) |
9538 | b->cond_string = NULL; | |
e12c7713 MK |
9539 | else |
9540 | { | |
9541 | /* Create a private copy of condition string. */ | |
e1e01040 | 9542 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9543 | b->thread = thread; |
e12c7713 | 9544 | } |
f00aae0f KS |
9545 | |
9546 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9547 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9548 | b->ignore_count = ignore_count; |
0101ce28 | 9549 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9550 | b->condition_not_parsed = 1; |
41447f92 | 9551 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 9552 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 9553 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 9554 | b->pspace = current_program_space; |
8bea4e01 | 9555 | |
b270e6f9 | 9556 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9557 | } |
9558 | ||
6c5b2ebe | 9559 | if (canonical.lsals.size () > 1) |
95a42b64 | 9560 | { |
3e43a32a MS |
9561 | warning (_("Multiple breakpoints were set.\nUse the " |
9562 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9563 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9564 | } |
9565 | ||
44702360 | 9566 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9567 | |
9568 | return 1; | |
c3f6f71d | 9569 | } |
c906108c | 9570 | |
348d480f | 9571 | /* Set a breakpoint. |
72b2ff0e VP |
9572 | ARG is a string describing breakpoint address, |
9573 | condition, and thread. | |
9574 | FLAG specifies if a breakpoint is hardware on, | |
9575 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9576 | and BP_TEMPFLAG. */ | |
348d480f | 9577 | |
98deb0da | 9578 | static void |
f2fc3015 | 9579 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9580 | { |
72b2ff0e | 9581 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9582 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9583 | ? bp_hardware_breakpoint | |
9584 | : bp_breakpoint); | |
f00aae0f | 9585 | |
ffc2605c | 9586 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
9587 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
9588 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 9589 | |
8cdf0e15 | 9590 | create_breakpoint (get_current_arch (), |
ffc2605c | 9591 | location.get (), |
10a636cc | 9592 | NULL, 0, arg, false, 1 /* parse arg */, |
0fb4aa4b | 9593 | tempflag, type_wanted, |
8cdf0e15 VP |
9594 | 0 /* Ignore count */, |
9595 | pending_break_support, | |
55aa24fb | 9596 | ops, |
8cdf0e15 | 9597 | from_tty, |
84f4c1fe | 9598 | 1 /* enabled */, |
44f238bb PA |
9599 | 0 /* internal */, |
9600 | 0); | |
c906108c SS |
9601 | } |
9602 | ||
c906108c SS |
9603 | /* Helper function for break_command_1 and disassemble_command. */ |
9604 | ||
9605 | void | |
fba45db2 | 9606 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9607 | { |
9608 | CORE_ADDR pc; | |
9609 | ||
9610 | if (sal->pc == 0 && sal->symtab != NULL) | |
9611 | { | |
9612 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9613 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9614 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9615 | sal->pc = pc; |
6a048695 | 9616 | |
4a64f543 | 9617 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9618 | number, then skip the function prologue if necessary. */ |
6a048695 | 9619 | if (sal->explicit_line) |
059acae7 | 9620 | skip_prologue_sal (sal); |
c906108c SS |
9621 | } |
9622 | ||
9623 | if (sal->section == 0 && sal->symtab != NULL) | |
9624 | { | |
346d1dfe | 9625 | const struct blockvector *bv; |
3977b71f | 9626 | const struct block *b; |
c5aa993b | 9627 | struct symbol *sym; |
c906108c | 9628 | |
43f3e411 DE |
9629 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9630 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9631 | if (bv != NULL) |
9632 | { | |
7f0df278 | 9633 | sym = block_linkage_function (b); |
c906108c SS |
9634 | if (sym != NULL) |
9635 | { | |
eb822aa6 | 9636 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
ebbc3a7d | 9637 | sal->section = sym->obj_section (SYMTAB_OBJFILE (sal->symtab)); |
c906108c SS |
9638 | } |
9639 | else | |
9640 | { | |
4a64f543 | 9641 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9642 | just have to look harder. This case can be executed |
9643 | if we have line numbers but no functions (as can | |
9644 | happen in assembly source). */ | |
c906108c | 9645 | |
5ed8105e | 9646 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9647 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9648 | |
5ed8105e | 9649 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9650 | if (msym.minsym) |
1db66e34 | 9651 | sal->section = msym.obj_section (); |
c906108c SS |
9652 | } |
9653 | } | |
9654 | } | |
9655 | } | |
9656 | ||
9657 | void | |
0b39b52e | 9658 | break_command (const char *arg, int from_tty) |
c906108c | 9659 | { |
db107f19 | 9660 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9661 | } |
9662 | ||
c906108c | 9663 | void |
0b39b52e | 9664 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9665 | { |
db107f19 | 9666 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9667 | } |
9668 | ||
c906108c | 9669 | static void |
0b39b52e | 9670 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9671 | { |
db107f19 | 9672 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9673 | } |
9674 | ||
9675 | static void | |
0b39b52e | 9676 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9677 | { |
db107f19 | 9678 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9679 | } |
9680 | ||
9681 | static void | |
ee7ddd71 | 9682 | stop_command (const char *arg, int from_tty) |
c906108c | 9683 | { |
a3f17187 | 9684 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9685 | Usage: stop in <function | address>\n\ |
a3f17187 | 9686 | stop at <line>\n")); |
c906108c SS |
9687 | } |
9688 | ||
9689 | static void | |
4495129a | 9690 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9691 | { |
9692 | int badInput = 0; | |
9693 | ||
cafb3438 | 9694 | if (arg == NULL) |
c906108c SS |
9695 | badInput = 1; |
9696 | else if (*arg != '*') | |
9697 | { | |
4495129a | 9698 | const char *argptr = arg; |
c906108c SS |
9699 | int hasColon = 0; |
9700 | ||
4a64f543 | 9701 | /* Look for a ':'. If this is a line number specification, then |
dda83cd7 SM |
9702 | say it is bad, otherwise, it should be an address or |
9703 | function/method name. */ | |
c906108c | 9704 | while (*argptr && !hasColon) |
c5aa993b JM |
9705 | { |
9706 | hasColon = (*argptr == ':'); | |
9707 | argptr++; | |
9708 | } | |
c906108c SS |
9709 | |
9710 | if (hasColon) | |
c5aa993b | 9711 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9712 | else |
c5aa993b | 9713 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9714 | } |
9715 | ||
9716 | if (badInput) | |
a3f17187 | 9717 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9718 | else |
db107f19 | 9719 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9720 | } |
9721 | ||
9722 | static void | |
4495129a | 9723 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9724 | { |
9725 | int badInput = 0; | |
9726 | ||
cafb3438 | 9727 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9728 | badInput = 1; |
9729 | else | |
9730 | { | |
4495129a | 9731 | const char *argptr = arg; |
c906108c SS |
9732 | int hasColon = 0; |
9733 | ||
4a64f543 | 9734 | /* Look for a ':'. If there is a '::' then get out, otherwise |
dda83cd7 | 9735 | it is probably a line number. */ |
c906108c | 9736 | while (*argptr && !hasColon) |
c5aa993b JM |
9737 | { |
9738 | hasColon = (*argptr == ':'); | |
9739 | argptr++; | |
9740 | } | |
c906108c SS |
9741 | |
9742 | if (hasColon) | |
c5aa993b | 9743 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9744 | else |
c5aa993b | 9745 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9746 | } |
9747 | ||
9748 | if (badInput) | |
65e65158 | 9749 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9750 | else |
db107f19 | 9751 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9752 | } |
9753 | ||
e7e0cddf SS |
9754 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9755 | with a prewired command list consisting of a single output command, | |
9756 | built from extra arguments supplied on the dprintf command | |
9757 | line. */ | |
9758 | ||
da821c7b | 9759 | static void |
0b39b52e | 9760 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9761 | { |
ffc2605c | 9762 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9763 | |
9764 | /* If non-NULL, ARG should have been advanced past the location; | |
9765 | the next character must be ','. */ | |
9766 | if (arg != NULL) | |
9767 | { | |
9768 | if (arg[0] != ',' || arg[1] == '\0') | |
9769 | error (_("Format string required")); | |
9770 | else | |
9771 | { | |
9772 | /* Skip the comma. */ | |
9773 | ++arg; | |
9774 | } | |
9775 | } | |
9776 | ||
e7e0cddf | 9777 | create_breakpoint (get_current_arch (), |
ffc2605c | 9778 | location.get (), |
10a636cc | 9779 | NULL, 0, arg, false, 1 /* parse arg */, |
e7e0cddf SS |
9780 | 0, bp_dprintf, |
9781 | 0 /* Ignore count */, | |
9782 | pending_break_support, | |
9783 | &dprintf_breakpoint_ops, | |
9784 | from_tty, | |
9785 | 1 /* enabled */, | |
9786 | 0 /* internal */, | |
9787 | 0); | |
9788 | } | |
9789 | ||
d3ce09f5 | 9790 | static void |
0b39b52e | 9791 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9792 | { |
9793 | error (_("May only run agent-printf on the target")); | |
9794 | } | |
9795 | ||
f1310107 TJB |
9796 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9797 | ranged breakpoints. */ | |
9798 | ||
9799 | static int | |
9800 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9801 | const address_space *aspace, |
09ac7c10 TT |
9802 | CORE_ADDR bp_addr, |
9803 | const struct target_waitstatus *ws) | |
f1310107 | 9804 | { |
09ac7c10 | 9805 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9806 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9807 | return 0; |
9808 | ||
f1310107 TJB |
9809 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9810 | bl->length, aspace, bp_addr); | |
9811 | } | |
9812 | ||
9813 | /* Implement the "resources_needed" breakpoint_ops method for | |
9814 | ranged breakpoints. */ | |
9815 | ||
9816 | static int | |
9817 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9818 | { | |
9819 | return target_ranged_break_num_registers (); | |
9820 | } | |
9821 | ||
9822 | /* Implement the "print_it" breakpoint_ops method for | |
9823 | ranged breakpoints. */ | |
9824 | ||
9825 | static enum print_stop_action | |
348d480f | 9826 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9827 | { |
348d480f | 9828 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9829 | struct bp_location *bl = b->loc; |
79a45e25 | 9830 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9831 | |
9832 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9833 | ||
9834 | /* Ranged breakpoints have only one location. */ | |
9835 | gdb_assert (bl && bl->next == NULL); | |
9836 | ||
9837 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9838 | |
9839 | maybe_print_thread_hit_breakpoint (uiout); | |
9840 | ||
f1310107 | 9841 | if (b->disposition == disp_del) |
112e8700 | 9842 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9843 | else |
112e8700 SM |
9844 | uiout->text ("Ranged breakpoint "); |
9845 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9846 | { |
112e8700 | 9847 | uiout->field_string ("reason", |
f1310107 | 9848 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9849 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9850 | } |
381befee | 9851 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 9852 | uiout->text (", "); |
f1310107 TJB |
9853 | |
9854 | return PRINT_SRC_AND_LOC; | |
9855 | } | |
9856 | ||
9857 | /* Implement the "print_one" breakpoint_ops method for | |
9858 | ranged breakpoints. */ | |
9859 | ||
9860 | static void | |
9861 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9862 | struct bp_location **last_loc) | |
9863 | { | |
9864 | struct bp_location *bl = b->loc; | |
9865 | struct value_print_options opts; | |
79a45e25 | 9866 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9867 | |
9868 | /* Ranged breakpoints have only one location. */ | |
9869 | gdb_assert (bl && bl->next == NULL); | |
9870 | ||
9871 | get_user_print_options (&opts); | |
9872 | ||
9873 | if (opts.addressprint) | |
9874 | /* We don't print the address range here, it will be printed later | |
9875 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9876 | uiout->field_skip ("addr"); |
f1310107 TJB |
9877 | annotate_field (5); |
9878 | print_breakpoint_location (b, bl); | |
9879 | *last_loc = bl; | |
9880 | } | |
9881 | ||
9882 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9883 | ranged breakpoints. */ | |
9884 | ||
9885 | static void | |
9886 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9887 | struct ui_out *uiout) | |
9888 | { | |
9889 | CORE_ADDR address_start, address_end; | |
9890 | struct bp_location *bl = b->loc; | |
d7e74731 | 9891 | string_file stb; |
f1310107 TJB |
9892 | |
9893 | gdb_assert (bl); | |
9894 | ||
9895 | address_start = bl->address; | |
9896 | address_end = address_start + bl->length - 1; | |
9897 | ||
112e8700 | 9898 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9899 | stb.printf ("[%s, %s]", |
9900 | print_core_address (bl->gdbarch, address_start), | |
9901 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9902 | uiout->field_stream ("addr", stb); |
9903 | uiout->text ("\n"); | |
f1310107 TJB |
9904 | } |
9905 | ||
9906 | /* Implement the "print_mention" breakpoint_ops method for | |
9907 | ranged breakpoints. */ | |
9908 | ||
9909 | static void | |
9910 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9911 | { | |
9912 | struct bp_location *bl = b->loc; | |
79a45e25 | 9913 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9914 | |
9915 | gdb_assert (bl); | |
9916 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9917 | ||
2d33446d TT |
9918 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9919 | b->number, paddress (bl->gdbarch, bl->address), | |
9920 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9921 | } |
9922 | ||
9923 | /* Implement the "print_recreate" breakpoint_ops method for | |
9924 | ranged breakpoints. */ | |
9925 | ||
9926 | static void | |
9927 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9928 | { | |
f00aae0f | 9929 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9930 | event_location_to_string (b->location.get ()), |
9931 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9932 | print_recreate_thread (b, fp); |
f1310107 TJB |
9933 | } |
9934 | ||
9935 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9936 | ||
2060206e | 9937 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9938 | |
9939 | /* Find the address where the end of the breakpoint range should be | |
9940 | placed, given the SAL of the end of the range. This is so that if | |
9941 | the user provides a line number, the end of the range is set to the | |
9942 | last instruction of the given line. */ | |
9943 | ||
9944 | static CORE_ADDR | |
9945 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9946 | { | |
9947 | CORE_ADDR end; | |
9948 | ||
9949 | /* If the user provided a PC value, use it. Otherwise, | |
9950 | find the address of the end of the given location. */ | |
9951 | if (sal.explicit_pc) | |
9952 | end = sal.pc; | |
9953 | else | |
9954 | { | |
9955 | int ret; | |
9956 | CORE_ADDR start; | |
9957 | ||
9958 | ret = find_line_pc_range (sal, &start, &end); | |
9959 | if (!ret) | |
9960 | error (_("Could not find location of the end of the range.")); | |
9961 | ||
9962 | /* find_line_pc_range returns the start of the next line. */ | |
9963 | end--; | |
9964 | } | |
9965 | ||
9966 | return end; | |
9967 | } | |
9968 | ||
9969 | /* Implement the "break-range" CLI command. */ | |
9970 | ||
9971 | static void | |
0b39b52e | 9972 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9973 | { |
f2fc3015 | 9974 | const char *arg_start; |
f1310107 TJB |
9975 | struct linespec_result canonical_start, canonical_end; |
9976 | int bp_count, can_use_bp, length; | |
9977 | CORE_ADDR end; | |
9978 | struct breakpoint *b; | |
f1310107 TJB |
9979 | |
9980 | /* We don't support software ranged breakpoints. */ | |
9981 | if (target_ranged_break_num_registers () < 0) | |
9982 | error (_("This target does not support hardware ranged breakpoints.")); | |
9983 | ||
9984 | bp_count = hw_breakpoint_used_count (); | |
9985 | bp_count += target_ranged_break_num_registers (); | |
9986 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9987 | bp_count, 0); | |
9988 | if (can_use_bp < 0) | |
9989 | error (_("Hardware breakpoints used exceeds limit.")); | |
9990 | ||
f8eba3c6 | 9991 | arg = skip_spaces (arg); |
f1310107 TJB |
9992 | if (arg == NULL || arg[0] == '\0') |
9993 | error(_("No address range specified.")); | |
9994 | ||
f8eba3c6 | 9995 | arg_start = arg; |
ffc2605c TT |
9996 | event_location_up start_location = string_to_event_location (&arg, |
9997 | current_language); | |
9998 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9999 | |
10000 | if (arg[0] != ',') | |
10001 | error (_("Too few arguments.")); | |
6c5b2ebe | 10002 | else if (canonical_start.lsals.empty ()) |
f1310107 | 10003 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 10004 | |
6c5b2ebe | 10005 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 10006 | |
6c5b2ebe PA |
10007 | if (canonical_start.lsals.size () > 1 |
10008 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
10009 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10010 | ||
6c5b2ebe | 10011 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 10012 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
10013 | |
10014 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10015 | arg = skip_spaces (arg); |
f1310107 TJB |
10016 | |
10017 | /* Parse the end location. */ | |
10018 | ||
f1310107 TJB |
10019 | arg_start = arg; |
10020 | ||
f8eba3c6 | 10021 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10022 | parse_breakpoint_sals because we need to specify the start location's |
10023 | symtab and line as the default symtab and line for the end of the | |
10024 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10025 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
10026 | event_location_up end_location = string_to_event_location (&arg, |
10027 | current_language); | |
10028 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
10029 | sal_start.symtab, sal_start.line, |
10030 | &canonical_end, NULL, NULL); | |
10031 | ||
6c5b2ebe | 10032 | if (canonical_end.lsals.empty ()) |
f1310107 | 10033 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 10034 | |
6c5b2ebe PA |
10035 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
10036 | if (canonical_end.lsals.size () > 1 | |
10037 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
10038 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10039 | ||
6c5b2ebe | 10040 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
10041 | |
10042 | end = find_breakpoint_range_end (sal_end); | |
10043 | if (sal_start.pc > end) | |
177b42fe | 10044 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10045 | |
10046 | length = end - sal_start.pc + 1; | |
10047 | if (length < 0) | |
10048 | /* Length overflowed. */ | |
10049 | error (_("Address range too large.")); | |
10050 | else if (length == 1) | |
10051 | { | |
10052 | /* This range is simple enough to be handled by | |
10053 | the `hbreak' command. */ | |
81b1e71c | 10054 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
10055 | |
10056 | return; | |
10057 | } | |
10058 | ||
10059 | /* Now set up the breakpoint. */ | |
10060 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10061 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10062 | set_breakpoint_count (breakpoint_count + 1); |
10063 | b->number = breakpoint_count; | |
10064 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10065 | b->location = std::move (start_location); |
10066 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10067 | b->loc->length = length; |
10068 | ||
f1310107 | 10069 | mention (b); |
76727919 | 10070 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 10071 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10072 | } |
10073 | ||
4a64f543 MS |
10074 | /* Return non-zero if EXP is verified as constant. Returned zero |
10075 | means EXP is variable. Also the constant detection may fail for | |
10076 | some constant expressions and in such case still falsely return | |
10077 | zero. */ | |
2e6e3d9c | 10078 | |
dab72643 | 10079 | static bool |
65d79d4b SDJ |
10080 | watchpoint_exp_is_const (const struct expression *exp) |
10081 | { | |
1eaebe02 | 10082 | return exp->op->constant_p (); |
65d79d4b SDJ |
10083 | } |
10084 | ||
c1fc2657 | 10085 | /* Watchpoint destructor. */ |
3a5c3e22 | 10086 | |
c1fc2657 | 10087 | watchpoint::~watchpoint () |
3a5c3e22 | 10088 | { |
c1fc2657 SM |
10089 | xfree (this->exp_string); |
10090 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10091 | } |
10092 | ||
348d480f PA |
10093 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10094 | ||
10095 | static void | |
10096 | re_set_watchpoint (struct breakpoint *b) | |
10097 | { | |
3a5c3e22 PA |
10098 | struct watchpoint *w = (struct watchpoint *) b; |
10099 | ||
348d480f PA |
10100 | /* Watchpoint can be either on expression using entirely global |
10101 | variables, or it can be on local variables. | |
10102 | ||
10103 | Watchpoints of the first kind are never auto-deleted, and even | |
10104 | persist across program restarts. Since they can use variables | |
10105 | from shared libraries, we need to reparse expression as libraries | |
10106 | are loaded and unloaded. | |
10107 | ||
10108 | Watchpoints on local variables can also change meaning as result | |
10109 | of solib event. For example, if a watchpoint uses both a local | |
10110 | and a global variables in expression, it's a local watchpoint, | |
10111 | but unloading of a shared library will make the expression | |
10112 | invalid. This is not a very common use case, but we still | |
10113 | re-evaluate expression, to avoid surprises to the user. | |
10114 | ||
10115 | Note that for local watchpoints, we re-evaluate it only if | |
10116 | watchpoints frame id is still valid. If it's not, it means the | |
10117 | watchpoint is out of scope and will be deleted soon. In fact, | |
10118 | I'm not sure we'll ever be called in this case. | |
10119 | ||
10120 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10121 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10122 | |
3a5c3e22 PA |
10123 | Don't do anything about disabled watchpoints, since they will be |
10124 | reevaluated again when enabled. */ | |
10125 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10126 | } |
10127 | ||
77b06cd7 TJB |
10128 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10129 | ||
10130 | static int | |
10131 | insert_watchpoint (struct bp_location *bl) | |
10132 | { | |
3a5c3e22 PA |
10133 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10134 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10135 | |
10136 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10137 | w->cond_exp.get ()); |
77b06cd7 TJB |
10138 | } |
10139 | ||
10140 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10141 | ||
10142 | static int | |
73971819 | 10143 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10144 | { |
3a5c3e22 PA |
10145 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10146 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10147 | |
10148 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10149 | w->cond_exp.get ()); |
e09342b5 TJB |
10150 | } |
10151 | ||
e09342b5 | 10152 | static int |
348d480f | 10153 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10154 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10155 | const struct target_waitstatus *ws) |
e09342b5 | 10156 | { |
348d480f | 10157 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10158 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10159 | |
348d480f PA |
10160 | /* Continuable hardware watchpoints are treated as non-existent if the |
10161 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10162 | some data address). Otherwise gdb won't stop on a break instruction | |
10163 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10164 | been defined. Also skip watchpoints which we know did not trigger | |
10165 | (did not match the data address). */ | |
10166 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10167 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10168 | return 0; |
9c06b0b4 | 10169 | |
348d480f | 10170 | return 1; |
9c06b0b4 TJB |
10171 | } |
10172 | ||
348d480f PA |
10173 | static void |
10174 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10175 | { |
348d480f | 10176 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10177 | |
348d480f | 10178 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10179 | } |
10180 | ||
10181 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10182 | hardware watchpoints. */ |
9c06b0b4 TJB |
10183 | |
10184 | static int | |
348d480f | 10185 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10186 | { |
3a5c3e22 PA |
10187 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10188 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10189 | |
10190 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10191 | } |
10192 | ||
10193 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10194 | hardware watchpoints. */ |
9c06b0b4 TJB |
10195 | |
10196 | static int | |
348d480f | 10197 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10198 | { |
efa80663 PA |
10199 | /* Read and access watchpoints only work with hardware support. */ |
10200 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10201 | } |
10202 | ||
9c06b0b4 | 10203 | static enum print_stop_action |
348d480f | 10204 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10205 | { |
348d480f | 10206 | struct breakpoint *b; |
348d480f | 10207 | enum print_stop_action result; |
3a5c3e22 | 10208 | struct watchpoint *w; |
79a45e25 | 10209 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10210 | |
10211 | gdb_assert (bs->bp_location_at != NULL); | |
10212 | ||
348d480f | 10213 | b = bs->breakpoint_at; |
3a5c3e22 | 10214 | w = (struct watchpoint *) b; |
348d480f | 10215 | |
f303dbd6 PA |
10216 | annotate_watchpoint (b->number); |
10217 | maybe_print_thread_hit_breakpoint (uiout); | |
10218 | ||
d7e74731 PA |
10219 | string_file stb; |
10220 | ||
76f9c9cf | 10221 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10222 | switch (b->type) |
10223 | { | |
348d480f | 10224 | case bp_watchpoint: |
9c06b0b4 | 10225 | case bp_hardware_watchpoint: |
112e8700 SM |
10226 | if (uiout->is_mi_like_p ()) |
10227 | uiout->field_string | |
10228 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10229 | mention (b); |
76f9c9cf | 10230 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10231 | uiout->text ("\nOld value = "); |
850645cf | 10232 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10233 | uiout->field_stream ("old", stb); |
10234 | uiout->text ("\nNew value = "); | |
850645cf | 10235 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10236 | uiout->field_stream ("new", stb); |
10237 | uiout->text ("\n"); | |
348d480f PA |
10238 | /* More than one watchpoint may have been triggered. */ |
10239 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10240 | break; |
10241 | ||
10242 | case bp_read_watchpoint: | |
112e8700 SM |
10243 | if (uiout->is_mi_like_p ()) |
10244 | uiout->field_string | |
10245 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10246 | mention (b); |
76f9c9cf | 10247 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10248 | uiout->text ("\nValue = "); |
850645cf | 10249 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10250 | uiout->field_stream ("value", stb); |
10251 | uiout->text ("\n"); | |
348d480f | 10252 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10253 | break; |
10254 | ||
10255 | case bp_access_watchpoint: | |
348d480f PA |
10256 | if (bs->old_val != NULL) |
10257 | { | |
112e8700 SM |
10258 | if (uiout->is_mi_like_p ()) |
10259 | uiout->field_string | |
10260 | ("reason", | |
348d480f PA |
10261 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10262 | mention (b); | |
76f9c9cf | 10263 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10264 | uiout->text ("\nOld value = "); |
850645cf | 10265 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10266 | uiout->field_stream ("old", stb); |
10267 | uiout->text ("\nNew value = "); | |
348d480f PA |
10268 | } |
10269 | else | |
10270 | { | |
10271 | mention (b); | |
112e8700 SM |
10272 | if (uiout->is_mi_like_p ()) |
10273 | uiout->field_string | |
10274 | ("reason", | |
348d480f | 10275 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10276 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10277 | uiout->text ("\nValue = "); |
348d480f | 10278 | } |
850645cf | 10279 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10280 | uiout->field_stream ("new", stb); |
10281 | uiout->text ("\n"); | |
348d480f | 10282 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10283 | break; |
10284 | default: | |
348d480f | 10285 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10286 | } |
10287 | ||
348d480f PA |
10288 | return result; |
10289 | } | |
10290 | ||
10291 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10292 | watchpoints. */ | |
10293 | ||
10294 | static void | |
10295 | print_mention_watchpoint (struct breakpoint *b) | |
10296 | { | |
3a5c3e22 | 10297 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10298 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10299 | const char *tuple_name; |
348d480f PA |
10300 | |
10301 | switch (b->type) | |
10302 | { | |
10303 | case bp_watchpoint: | |
112e8700 | 10304 | uiout->text ("Watchpoint "); |
46b9c129 | 10305 | tuple_name = "wpt"; |
348d480f PA |
10306 | break; |
10307 | case bp_hardware_watchpoint: | |
112e8700 | 10308 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10309 | tuple_name = "wpt"; |
348d480f PA |
10310 | break; |
10311 | case bp_read_watchpoint: | |
112e8700 | 10312 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10313 | tuple_name = "hw-rwpt"; |
348d480f PA |
10314 | break; |
10315 | case bp_access_watchpoint: | |
112e8700 | 10316 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10317 | tuple_name = "hw-awpt"; |
348d480f PA |
10318 | break; |
10319 | default: | |
10320 | internal_error (__FILE__, __LINE__, | |
10321 | _("Invalid hardware watchpoint type.")); | |
10322 | } | |
10323 | ||
46b9c129 | 10324 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10325 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10326 | uiout->text (": "); |
10327 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10328 | } |
10329 | ||
10330 | /* Implement the "print_recreate" breakpoint_ops method for | |
10331 | watchpoints. */ | |
10332 | ||
10333 | static void | |
10334 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10335 | { | |
3a5c3e22 PA |
10336 | struct watchpoint *w = (struct watchpoint *) b; |
10337 | ||
348d480f PA |
10338 | switch (b->type) |
10339 | { | |
10340 | case bp_watchpoint: | |
10341 | case bp_hardware_watchpoint: | |
10342 | fprintf_unfiltered (fp, "watch"); | |
10343 | break; | |
10344 | case bp_read_watchpoint: | |
10345 | fprintf_unfiltered (fp, "rwatch"); | |
10346 | break; | |
10347 | case bp_access_watchpoint: | |
10348 | fprintf_unfiltered (fp, "awatch"); | |
10349 | break; | |
10350 | default: | |
10351 | internal_error (__FILE__, __LINE__, | |
10352 | _("Invalid watchpoint type.")); | |
10353 | } | |
10354 | ||
3a5c3e22 | 10355 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10356 | print_recreate_thread (b, fp); |
348d480f PA |
10357 | } |
10358 | ||
427cd150 TT |
10359 | /* Implement the "explains_signal" breakpoint_ops method for |
10360 | watchpoints. */ | |
10361 | ||
47591c29 | 10362 | static int |
427cd150 TT |
10363 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10364 | { | |
10365 | /* A software watchpoint cannot cause a signal other than | |
10366 | GDB_SIGNAL_TRAP. */ | |
10367 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10368 | return 0; |
427cd150 | 10369 | |
47591c29 | 10370 | return 1; |
427cd150 TT |
10371 | } |
10372 | ||
348d480f PA |
10373 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10374 | ||
2060206e | 10375 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10376 | |
10377 | /* Implement the "insert" breakpoint_ops method for | |
10378 | masked hardware watchpoints. */ | |
10379 | ||
10380 | static int | |
10381 | insert_masked_watchpoint (struct bp_location *bl) | |
10382 | { | |
3a5c3e22 PA |
10383 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10384 | ||
10385 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10386 | bl->watchpoint_type); |
10387 | } | |
10388 | ||
10389 | /* Implement the "remove" breakpoint_ops method for | |
10390 | masked hardware watchpoints. */ | |
10391 | ||
10392 | static int | |
73971819 | 10393 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10394 | { |
3a5c3e22 PA |
10395 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10396 | ||
10397 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
dda83cd7 | 10398 | bl->watchpoint_type); |
348d480f PA |
10399 | } |
10400 | ||
10401 | /* Implement the "resources_needed" breakpoint_ops method for | |
10402 | masked hardware watchpoints. */ | |
10403 | ||
10404 | static int | |
10405 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10406 | { | |
3a5c3e22 PA |
10407 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10408 | ||
10409 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10410 | } |
10411 | ||
10412 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10413 | masked hardware watchpoints. */ | |
10414 | ||
10415 | static int | |
10416 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10417 | { | |
10418 | return 0; | |
10419 | } | |
10420 | ||
10421 | /* Implement the "print_it" breakpoint_ops method for | |
10422 | masked hardware watchpoints. */ | |
10423 | ||
10424 | static enum print_stop_action | |
10425 | print_it_masked_watchpoint (bpstat bs) | |
10426 | { | |
10427 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10428 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10429 | |
10430 | /* Masked watchpoints have only one location. */ | |
10431 | gdb_assert (b->loc && b->loc->next == NULL); | |
10432 | ||
f303dbd6 PA |
10433 | annotate_watchpoint (b->number); |
10434 | maybe_print_thread_hit_breakpoint (uiout); | |
10435 | ||
348d480f PA |
10436 | switch (b->type) |
10437 | { | |
10438 | case bp_hardware_watchpoint: | |
112e8700 SM |
10439 | if (uiout->is_mi_like_p ()) |
10440 | uiout->field_string | |
10441 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10442 | break; |
10443 | ||
10444 | case bp_read_watchpoint: | |
112e8700 SM |
10445 | if (uiout->is_mi_like_p ()) |
10446 | uiout->field_string | |
10447 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10448 | break; |
10449 | ||
10450 | case bp_access_watchpoint: | |
112e8700 SM |
10451 | if (uiout->is_mi_like_p ()) |
10452 | uiout->field_string | |
10453 | ("reason", | |
348d480f PA |
10454 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10455 | break; | |
10456 | default: | |
10457 | internal_error (__FILE__, __LINE__, | |
10458 | _("Invalid hardware watchpoint type.")); | |
10459 | } | |
10460 | ||
10461 | mention (b); | |
112e8700 | 10462 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10463 | Check the underlying instruction at PC for the memory\n\ |
10464 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10465 | uiout->text ("\n"); |
9c06b0b4 TJB |
10466 | |
10467 | /* More than one watchpoint may have been triggered. */ | |
10468 | return PRINT_UNKNOWN; | |
10469 | } | |
10470 | ||
10471 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10472 | masked hardware watchpoints. */ | |
10473 | ||
10474 | static void | |
10475 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10476 | struct ui_out *uiout) | |
10477 | { | |
3a5c3e22 PA |
10478 | struct watchpoint *w = (struct watchpoint *) b; |
10479 | ||
9c06b0b4 TJB |
10480 | /* Masked watchpoints have only one location. */ |
10481 | gdb_assert (b->loc && b->loc->next == NULL); | |
10482 | ||
112e8700 SM |
10483 | uiout->text ("\tmask "); |
10484 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10485 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10486 | } |
10487 | ||
10488 | /* Implement the "print_mention" breakpoint_ops method for | |
10489 | masked hardware watchpoints. */ | |
10490 | ||
10491 | static void | |
10492 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10493 | { | |
3a5c3e22 | 10494 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10495 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10496 | const char *tuple_name; |
9c06b0b4 TJB |
10497 | |
10498 | switch (b->type) | |
10499 | { | |
10500 | case bp_hardware_watchpoint: | |
112e8700 | 10501 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10502 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10503 | break; |
10504 | case bp_read_watchpoint: | |
112e8700 | 10505 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10506 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10507 | break; |
10508 | case bp_access_watchpoint: | |
112e8700 | 10509 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10510 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10511 | break; |
10512 | default: | |
10513 | internal_error (__FILE__, __LINE__, | |
10514 | _("Invalid hardware watchpoint type.")); | |
10515 | } | |
10516 | ||
46b9c129 | 10517 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10518 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10519 | uiout->text (": "); |
10520 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10521 | } |
10522 | ||
10523 | /* Implement the "print_recreate" breakpoint_ops method for | |
10524 | masked hardware watchpoints. */ | |
10525 | ||
10526 | static void | |
10527 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10528 | { | |
3a5c3e22 | 10529 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10530 | |
10531 | switch (b->type) | |
10532 | { | |
10533 | case bp_hardware_watchpoint: | |
10534 | fprintf_unfiltered (fp, "watch"); | |
10535 | break; | |
10536 | case bp_read_watchpoint: | |
10537 | fprintf_unfiltered (fp, "rwatch"); | |
10538 | break; | |
10539 | case bp_access_watchpoint: | |
10540 | fprintf_unfiltered (fp, "awatch"); | |
10541 | break; | |
10542 | default: | |
10543 | internal_error (__FILE__, __LINE__, | |
10544 | _("Invalid hardware watchpoint type.")); | |
10545 | } | |
10546 | ||
53807e9f TT |
10547 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, |
10548 | phex (w->hw_wp_mask, sizeof (CORE_ADDR))); | |
d9b3f62e | 10549 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10550 | } |
10551 | ||
10552 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10553 | ||
2060206e | 10554 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10555 | |
10556 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10557 | ||
f2478a7e | 10558 | static bool |
9c06b0b4 TJB |
10559 | is_masked_watchpoint (const struct breakpoint *b) |
10560 | { | |
10561 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10562 | } | |
10563 | ||
53a5351d | 10564 | /* accessflag: hw_write: watch write, |
dda83cd7 | 10565 | hw_read: watch read, |
53a5351d | 10566 | hw_access: watch access (read or write) */ |
c906108c | 10567 | static void |
bbc13ae3 | 10568 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 10569 | bool just_location, bool internal) |
c906108c | 10570 | { |
c1fc2657 | 10571 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10572 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10573 | struct value *result; |
bb9d5f81 | 10574 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10575 | const char *exp_start = NULL; |
10576 | const char *exp_end = NULL; | |
10577 | const char *tok, *end_tok; | |
9c06b0b4 | 10578 | int toklen = -1; |
bbc13ae3 KS |
10579 | const char *cond_start = NULL; |
10580 | const char *cond_end = NULL; | |
c906108c | 10581 | enum bptype bp_type; |
37e4754d | 10582 | int thread = -1; |
9c06b0b4 TJB |
10583 | /* Flag to indicate whether we are going to use masks for |
10584 | the hardware watchpoint. */ | |
2e362716 | 10585 | bool use_mask = false; |
9c06b0b4 | 10586 | CORE_ADDR mask = 0; |
c906108c | 10587 | |
37e4754d LM |
10588 | /* Make sure that we actually have parameters to parse. */ |
10589 | if (arg != NULL && arg[0] != '\0') | |
10590 | { | |
bbc13ae3 KS |
10591 | const char *value_start; |
10592 | ||
10593 | exp_end = arg + strlen (arg); | |
37e4754d | 10594 | |
9c06b0b4 TJB |
10595 | /* Look for "parameter value" pairs at the end |
10596 | of the arguments string. */ | |
bbc13ae3 | 10597 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10598 | { |
10599 | /* Skip whitespace at the end of the argument list. */ | |
10600 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10601 | tok--; | |
10602 | ||
10603 | /* Find the beginning of the last token. | |
10604 | This is the value of the parameter. */ | |
10605 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10606 | tok--; | |
10607 | value_start = tok + 1; | |
10608 | ||
10609 | /* Skip whitespace. */ | |
10610 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10611 | tok--; | |
10612 | ||
10613 | end_tok = tok; | |
10614 | ||
10615 | /* Find the beginning of the second to last token. | |
10616 | This is the parameter itself. */ | |
10617 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10618 | tok--; | |
10619 | tok++; | |
10620 | toklen = end_tok - tok + 1; | |
10621 | ||
61012eef | 10622 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10623 | { |
5d5658a1 | 10624 | struct thread_info *thr; |
9c06b0b4 TJB |
10625 | /* At this point we've found a "thread" token, which means |
10626 | the user is trying to set a watchpoint that triggers | |
10627 | only in a specific thread. */ | |
5d5658a1 | 10628 | const char *endp; |
37e4754d | 10629 | |
9c06b0b4 TJB |
10630 | if (thread != -1) |
10631 | error(_("You can specify only one thread.")); | |
37e4754d | 10632 | |
9c06b0b4 | 10633 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10634 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10635 | |
5d5658a1 | 10636 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10637 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10638 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10639 | |
5d5658a1 | 10640 | thread = thr->global_num; |
9c06b0b4 | 10641 | } |
61012eef | 10642 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10643 | { |
10644 | /* We've found a "mask" token, which means the user wants to | |
10645 | create a hardware watchpoint that is going to have the mask | |
10646 | facility. */ | |
10647 | struct value *mask_value, *mark; | |
37e4754d | 10648 | |
9c06b0b4 TJB |
10649 | if (use_mask) |
10650 | error(_("You can specify only one mask.")); | |
37e4754d | 10651 | |
2e362716 | 10652 | use_mask = just_location = true; |
37e4754d | 10653 | |
9c06b0b4 TJB |
10654 | mark = value_mark (); |
10655 | mask_value = parse_to_comma_and_eval (&value_start); | |
10656 | mask = value_as_address (mask_value); | |
10657 | value_free_to_mark (mark); | |
10658 | } | |
10659 | else | |
10660 | /* We didn't recognize what we found. We should stop here. */ | |
10661 | break; | |
37e4754d | 10662 | |
9c06b0b4 TJB |
10663 | /* Truncate the string and get rid of the "parameter value" pair before |
10664 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10665 | exp_end = tok; |
9c06b0b4 | 10666 | } |
37e4754d | 10667 | } |
bbc13ae3 KS |
10668 | else |
10669 | exp_end = arg; | |
37e4754d | 10670 | |
bbc13ae3 KS |
10671 | /* Parse the rest of the arguments. From here on out, everything |
10672 | is in terms of a newly allocated string instead of the original | |
10673 | ARG. */ | |
81b1e71c TT |
10674 | std::string expression (arg, exp_end - arg); |
10675 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10676 | innermost_block_tracker tracker; |
10677 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10678 | exp_end = arg; |
fa8a61dc TT |
10679 | /* Remove trailing whitespace from the expression before saving it. |
10680 | This makes the eventual display of the expression string a bit | |
10681 | prettier. */ | |
10682 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10683 | --exp_end; | |
10684 | ||
65d79d4b | 10685 | /* Checking if the expression is not constant. */ |
4d01a485 | 10686 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10687 | { |
10688 | int len; | |
10689 | ||
10690 | len = exp_end - exp_start; | |
10691 | while (len > 0 && isspace (exp_start[len - 1])) | |
10692 | len--; | |
10693 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10694 | } | |
10695 | ||
699bd4cf | 10696 | exp_valid_block = tracker.block (); |
b926417a | 10697 | struct value *mark = value_mark (); |
850645cf | 10698 | struct value *val_as_value = nullptr; |
1eaebe02 TT |
10699 | fetch_subexp_value (exp.get (), exp->op.get (), &val_as_value, &result, NULL, |
10700 | just_location); | |
06a64a0b | 10701 | |
850645cf | 10702 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10703 | { |
850645cf TT |
10704 | saved_bitpos = value_bitpos (val_as_value); |
10705 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10706 | } |
10707 | ||
850645cf | 10708 | value_ref_ptr val; |
06a64a0b TT |
10709 | if (just_location) |
10710 | { | |
9c06b0b4 TJB |
10711 | int ret; |
10712 | ||
06a64a0b | 10713 | exp_valid_block = NULL; |
850645cf | 10714 | val = release_value (value_addr (result)); |
06a64a0b | 10715 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10716 | |
10717 | if (use_mask) | |
10718 | { | |
850645cf | 10719 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10720 | mask); |
10721 | if (ret == -1) | |
10722 | error (_("This target does not support masked watchpoints.")); | |
10723 | else if (ret == -2) | |
10724 | error (_("Invalid mask or memory region.")); | |
10725 | } | |
06a64a0b | 10726 | } |
850645cf TT |
10727 | else if (val_as_value != NULL) |
10728 | val = release_value (val_as_value); | |
c906108c | 10729 | |
f1735a53 TT |
10730 | tok = skip_spaces (arg); |
10731 | end_tok = skip_to_space (tok); | |
c906108c SS |
10732 | |
10733 | toklen = end_tok - tok; | |
10734 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10735 | { | |
10736 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10737 | innermost_block_tracker if_tracker; |
10738 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10739 | |
10740 | /* The watchpoint expression may not be local, but the condition | |
10741 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10742 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10743 | |
c906108c SS |
10744 | cond_end = tok; |
10745 | } | |
10746 | if (*tok) | |
8a3fe4f8 | 10747 | error (_("Junk at end of command.")); |
c906108c | 10748 | |
441d7c93 PA |
10749 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10750 | ||
10751 | /* Save this because create_internal_breakpoint below invalidates | |
10752 | 'wp_frame'. */ | |
10753 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10754 | |
10755 | /* If the expression is "local", then set up a "watchpoint scope" | |
10756 | breakpoint at the point where we've left the scope of the watchpoint | |
10757 | expression. Create the scope breakpoint before the watchpoint, so | |
10758 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10759 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10760 | { |
441d7c93 PA |
10761 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10762 | ||
10763 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10764 | { |
441d7c93 PA |
10765 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10766 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10767 | ||
24b21115 | 10768 | scope_breakpoint |
441d7c93 | 10769 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10770 | bp_watchpoint_scope, |
10771 | &momentary_breakpoint_ops); | |
d983da9c | 10772 | |
441d7c93 PA |
10773 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10774 | wp_frame = NULL; | |
10775 | ||
edb3359d | 10776 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10777 | |
edb3359d DJ |
10778 | /* Automatically delete the breakpoint when it hits. */ |
10779 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10780 | |
edb3359d | 10781 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10782 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10783 | |
edb3359d | 10784 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10785 | scope_breakpoint->loc->gdbarch = caller_arch; |
10786 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10787 | scope_breakpoint->loc->address |
a6d9a66e UW |
10788 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10789 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10790 | scope_breakpoint->type); |
10791 | } | |
d983da9c DJ |
10792 | } |
10793 | ||
e8369a73 AB |
10794 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10795 | watchpoints here even if hardware watchpoints are turned off, a call | |
10796 | to update_watchpoint later in this function will cause the type to | |
10797 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10798 | ||
10799 | if (accessflag == hw_read) | |
10800 | bp_type = bp_read_watchpoint; | |
10801 | else if (accessflag == hw_access) | |
10802 | bp_type = bp_access_watchpoint; | |
10803 | else | |
10804 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10805 | |
b270e6f9 | 10806 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10807 | |
348d480f | 10808 | if (use_mask) |
b270e6f9 | 10809 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10810 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10811 | else |
b270e6f9 | 10812 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10813 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10814 | w->thread = thread; |
10815 | w->disposition = disp_donttouch; | |
10816 | w->pspace = current_program_space; | |
b22e99fd | 10817 | w->exp = std::move (exp); |
3a5c3e22 PA |
10818 | w->exp_valid_block = exp_valid_block; |
10819 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10820 | if (just_location) |
10821 | { | |
850645cf TT |
10822 | struct type *t = value_type (val.get ()); |
10823 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10824 | |
43cc5389 | 10825 | w->exp_string_reparse |
f16a9f57 | 10826 | = current_language->watch_location_expression (t, addr).release (); |
06a64a0b | 10827 | |
3a5c3e22 | 10828 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10829 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10830 | } |
10831 | else | |
3a5c3e22 | 10832 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10833 | |
10834 | if (use_mask) | |
10835 | { | |
3a5c3e22 | 10836 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10837 | } |
10838 | else | |
10839 | { | |
3a5c3e22 | 10840 | w->val = val; |
bb9d5f81 PP |
10841 | w->val_bitpos = saved_bitpos; |
10842 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10843 | w->val_valid = true; |
9c06b0b4 | 10844 | } |
77b06cd7 | 10845 | |
c906108c | 10846 | if (cond_start) |
c1fc2657 | 10847 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10848 | else |
c1fc2657 | 10849 | w->cond_string = 0; |
c5aa993b | 10850 | |
441d7c93 | 10851 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10852 | { |
441d7c93 | 10853 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10854 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10855 | } |
c906108c | 10856 | else |
f6bc2008 | 10857 | { |
3a5c3e22 PA |
10858 | w->watchpoint_frame = null_frame_id; |
10859 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10860 | } |
c906108c | 10861 | |
d983da9c | 10862 | if (scope_breakpoint != NULL) |
c906108c | 10863 | { |
d983da9c DJ |
10864 | /* The scope breakpoint is related to the watchpoint. We will |
10865 | need to act on them together. */ | |
c1fc2657 | 10866 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10867 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10868 | } |
d983da9c | 10869 | |
06a64a0b TT |
10870 | if (!just_location) |
10871 | value_free_to_mark (mark); | |
2d134ed3 | 10872 | |
b270e6f9 TT |
10873 | /* Finally update the new watchpoint. This creates the locations |
10874 | that should be inserted. */ | |
10875 | update_watchpoint (w.get (), 1); | |
a9634178 | 10876 | |
b270e6f9 | 10877 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10878 | } |
10879 | ||
e09342b5 | 10880 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10881 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10882 | |
c906108c | 10883 | static int |
a6535de1 | 10884 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10885 | { |
10886 | int found_memory_cnt = 0; | |
10887 | ||
10888 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10889 | if (!can_use_hw_watchpoints) |
c906108c | 10890 | return 0; |
c5aa993b | 10891 | |
a6535de1 TT |
10892 | gdb_assert (!vals.empty ()); |
10893 | struct value *head = vals[0].get (); | |
10894 | ||
5c44784c JM |
10895 | /* Make sure that the value of the expression depends only upon |
10896 | memory contents, and values computed from them within GDB. If we | |
10897 | find any register references or function calls, we can't use a | |
10898 | hardware watchpoint. | |
10899 | ||
10900 | The idea here is that evaluating an expression generates a series | |
10901 | of values, one holding the value of every subexpression. (The | |
10902 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10903 | a*b+c.) GDB's values hold almost enough information to establish | |
10904 | the criteria given above --- they identify memory lvalues, | |
10905 | register lvalues, computed values, etcetera. So we can evaluate | |
10906 | the expression, and then scan the chain of values that leaves | |
10907 | behind to decide whether we can detect any possible change to the | |
10908 | expression's final value using only hardware watchpoints. | |
10909 | ||
10910 | However, I don't think that the values returned by inferior | |
10911 | function calls are special in any way. So this function may not | |
10912 | notice that an expression involving an inferior function call | |
10913 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10914 | for (const value_ref_ptr &iter : vals) |
c906108c | 10915 | { |
a6535de1 TT |
10916 | struct value *v = iter.get (); |
10917 | ||
5c44784c | 10918 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10919 | { |
8464be76 DJ |
10920 | if (v != head && value_lazy (v)) |
10921 | /* A lazy memory lvalue in the chain is one that GDB never | |
10922 | needed to fetch; we either just used its address (e.g., | |
10923 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10924 | in `a,b'). This doesn't apply to HEAD; if that is | |
10925 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10926 | ; |
53a5351d | 10927 | else |
5c44784c JM |
10928 | { |
10929 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 10930 | it with hardware watchpoints. */ |
df407dfe | 10931 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10932 | |
10933 | /* We only watch structs and arrays if user asked for it | |
10934 | explicitly, never if they just happen to appear in a | |
10935 | middle of some value chain. */ | |
10936 | if (v == head | |
78134374 SM |
10937 | || (vtype->code () != TYPE_CODE_STRUCT |
10938 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 10939 | { |
42ae5230 | 10940 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10941 | int len; |
10942 | int num_regs; | |
10943 | ||
a9634178 | 10944 | len = (target_exact_watchpoints |
e09342b5 TJB |
10945 | && is_scalar_type_recursive (vtype))? |
10946 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10947 | |
e09342b5 TJB |
10948 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10949 | if (!num_regs) | |
2e70b7b9 MS |
10950 | return 0; |
10951 | else | |
e09342b5 | 10952 | found_memory_cnt += num_regs; |
2e70b7b9 | 10953 | } |
5c44784c | 10954 | } |
c5aa993b | 10955 | } |
5086187c AC |
10956 | else if (VALUE_LVAL (v) != not_lval |
10957 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10958 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10959 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10960 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10961 | } |
10962 | ||
10963 | /* The expression itself looks suitable for using a hardware | |
10964 | watchpoint, but give the target machine a chance to reject it. */ | |
10965 | return found_memory_cnt; | |
10966 | } | |
10967 | ||
8b93c638 | 10968 | void |
2e362716 | 10969 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 10970 | { |
84f4c1fe | 10971 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10972 | } |
10973 | ||
a15a5258 AB |
10974 | /* Options for the watch, awatch, and rwatch commands. */ |
10975 | ||
10976 | struct watch_options | |
10977 | { | |
10978 | /* For -location. */ | |
10979 | bool location = false; | |
10980 | }; | |
10981 | ||
10982 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
10983 | ||
10984 | Historically GDB always accepted both '-location' and '-l' flags for | |
10985 | these commands (both flags being synonyms). When converting to the | |
10986 | newer option scheme only '-location' is added here. That's fine (for | |
10987 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
10988 | accepted, so '-l', '-loc', are now all accepted. | |
10989 | ||
10990 | What this means is that, if in the future, we add any new flag here | |
10991 | that starts with '-l' then this will break backward compatibility, so | |
10992 | please, don't do that! */ | |
10993 | ||
10994 | static const gdb::option::option_def watch_option_defs[] = { | |
10995 | gdb::option::flag_option_def<watch_options> { | |
10996 | "location", | |
10997 | [] (watch_options *opt) { return &opt->location; }, | |
10998 | N_("\ | |
10999 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
11000 | -l can be used as a short form of -location."), | |
11001 | }, | |
11002 | }; | |
11003 | ||
11004 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
11005 | commands. */ | |
11006 | ||
11007 | static gdb::option::option_def_group | |
11008 | make_watch_options_def_group (watch_options *opts) | |
11009 | { | |
11010 | return {{watch_option_defs}, opts}; | |
11011 | } | |
11012 | ||
06a64a0b TT |
11013 | /* A helper function that looks for the "-location" argument and then |
11014 | calls watch_command_1. */ | |
11015 | ||
11016 | static void | |
0b39b52e | 11017 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 11018 | { |
a15a5258 AB |
11019 | watch_options opts; |
11020 | auto grp = make_watch_options_def_group (&opts); | |
11021 | gdb::option::process_options | |
11022 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
11023 | if (arg != nullptr && *arg == '\0') | |
11024 | arg = nullptr; | |
11025 | ||
11026 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
11027 | } | |
06a64a0b | 11028 | |
a15a5258 AB |
11029 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
11030 | static void | |
11031 | watch_command_completer (struct cmd_list_element *ignore, | |
11032 | completion_tracker &tracker, | |
11033 | const char *text, const char * /*word*/) | |
11034 | { | |
11035 | const auto group = make_watch_options_def_group (nullptr); | |
11036 | if (gdb::option::complete_options | |
11037 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
11038 | return; | |
06a64a0b | 11039 | |
a15a5258 AB |
11040 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
11041 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 11042 | } |
8926118c | 11043 | |
c5aa993b | 11044 | static void |
0b39b52e | 11045 | watch_command (const char *arg, int from_tty) |
c906108c | 11046 | { |
06a64a0b | 11047 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11048 | } |
11049 | ||
8b93c638 | 11050 | void |
2e362716 | 11051 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 11052 | { |
84f4c1fe | 11053 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11054 | } |
8926118c | 11055 | |
c5aa993b | 11056 | static void |
0b39b52e | 11057 | rwatch_command (const char *arg, int from_tty) |
c906108c | 11058 | { |
06a64a0b | 11059 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11060 | } |
11061 | ||
8b93c638 | 11062 | void |
2e362716 | 11063 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 11064 | { |
84f4c1fe | 11065 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11066 | } |
8926118c | 11067 | |
c5aa993b | 11068 | static void |
0b39b52e | 11069 | awatch_command (const char *arg, int from_tty) |
c906108c | 11070 | { |
06a64a0b | 11071 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11072 | } |
c906108c | 11073 | \f |
c5aa993b | 11074 | |
cfc31633 PA |
11075 | /* Data for the FSM that manages the until(location)/advance commands |
11076 | in infcmd.c. Here because it uses the mechanisms of | |
11077 | breakpoints. */ | |
c906108c | 11078 | |
46e3ed7f | 11079 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 11080 | { |
46e3ed7f | 11081 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
11082 | int thread; |
11083 | ||
df631783 PA |
11084 | /* The breakpoint set at the return address in the caller frame, |
11085 | plus breakpoints at all the destination locations. */ | |
11086 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 11087 | |
46e3ed7f | 11088 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 11089 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
11090 | : thread_fsm (cmd_interp), |
11091 | thread (thread), | |
df631783 | 11092 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
11093 | { |
11094 | } | |
cfc31633 | 11095 | |
46e3ed7f TT |
11096 | void clean_up (struct thread_info *thread) override; |
11097 | bool should_stop (struct thread_info *thread) override; | |
11098 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
11099 | }; |
11100 | ||
cfc31633 PA |
11101 | /* Implementation of the 'should_stop' FSM method for the |
11102 | until(location)/advance commands. */ | |
11103 | ||
46e3ed7f TT |
11104 | bool |
11105 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 11106 | { |
df631783 PA |
11107 | for (const breakpoint_up &bp : breakpoints) |
11108 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11109 | bp.get ()) != NULL) | |
11110 | { | |
11111 | set_finished (); | |
11112 | break; | |
11113 | } | |
cfc31633 | 11114 | |
46e3ed7f | 11115 | return true; |
cfc31633 PA |
11116 | } |
11117 | ||
11118 | /* Implementation of the 'clean_up' FSM method for the | |
11119 | until(location)/advance commands. */ | |
11120 | ||
46e3ed7f TT |
11121 | void |
11122 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 11123 | { |
cfc31633 | 11124 | /* Clean up our temporary breakpoints. */ |
df631783 | 11125 | breakpoints.clear (); |
46e3ed7f | 11126 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
11127 | } |
11128 | ||
11129 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11130 | until(location)/advance commands. */ | |
11131 | ||
46e3ed7f TT |
11132 | enum async_reply_reason |
11133 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
11134 | { |
11135 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11136 | } |
11137 | ||
c906108c | 11138 | void |
f2fc3015 | 11139 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11140 | { |
8556afb4 PA |
11141 | struct frame_info *frame; |
11142 | struct gdbarch *frame_gdbarch; | |
11143 | struct frame_id stack_frame_id; | |
11144 | struct frame_id caller_frame_id; | |
186c406b TT |
11145 | int thread; |
11146 | struct thread_info *tp; | |
c906108c | 11147 | |
70509625 | 11148 | clear_proceed_status (0); |
c906108c SS |
11149 | |
11150 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11151 | this function. */ |
c5aa993b | 11152 | |
ffc2605c | 11153 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11154 | |
6c5b2ebe PA |
11155 | std::vector<symtab_and_line> sals |
11156 | = (last_displayed_sal_is_valid () | |
11157 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11158 | get_last_displayed_symtab (), | |
11159 | get_last_displayed_line ()) | |
11160 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 11161 | NULL, NULL, 0)); |
c5aa993b | 11162 | |
df631783 | 11163 | if (sals.empty ()) |
8a3fe4f8 | 11164 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11165 | |
c906108c | 11166 | if (*arg) |
8a3fe4f8 | 11167 | error (_("Junk at end of arguments.")); |
c5aa993b | 11168 | |
186c406b | 11169 | tp = inferior_thread (); |
5d5658a1 | 11170 | thread = tp->global_num; |
186c406b | 11171 | |
8556afb4 PA |
11172 | /* Note linespec handling above invalidates the frame chain. |
11173 | Installing a breakpoint also invalidates the frame chain (as it | |
11174 | may need to switch threads), so do any frame handling before | |
11175 | that. */ | |
11176 | ||
11177 | frame = get_selected_frame (NULL); | |
11178 | frame_gdbarch = get_frame_arch (frame); | |
11179 | stack_frame_id = get_stack_frame_id (frame); | |
11180 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11181 | |
ae66c1fc EZ |
11182 | /* Keep within the current frame, or in frames called by the current |
11183 | one. */ | |
edb3359d | 11184 | |
df631783 | 11185 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
11186 | |
11187 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11188 | ||
883bc8d1 | 11189 | if (frame_id_p (caller_frame_id)) |
c906108c | 11190 | { |
883bc8d1 | 11191 | struct symtab_and_line sal2; |
cfc31633 | 11192 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11193 | |
11194 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11195 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 11196 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
11197 | |
11198 | breakpoint_up caller_breakpoint | |
11199 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
11200 | caller_frame_id, bp_until); | |
11201 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 11202 | |
883bc8d1 | 11203 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11204 | lj_deleter.emplace (thread); |
c906108c | 11205 | } |
c5aa993b | 11206 | |
c70a6932 JK |
11207 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11208 | frame = NULL; | |
11209 | ||
df631783 PA |
11210 | /* If the user told us to continue until a specified location, we |
11211 | don't specify a frame at which we need to stop. Otherwise, | |
11212 | specify the selected frame, because we want to stop only at the | |
11213 | very same frame. */ | |
11214 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
11215 | ||
11216 | for (symtab_and_line &sal : sals) | |
11217 | { | |
11218 | resolve_sal_pc (&sal); | |
11219 | ||
11220 | breakpoint_up location_breakpoint | |
11221 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
11222 | stop_frame_id, bp_until); | |
11223 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
11224 | } | |
883bc8d1 | 11225 | |
46e3ed7f | 11226 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
df631783 | 11227 | std::move (breakpoints)); |
f107f563 | 11228 | |
5419bdae TT |
11229 | if (lj_deleter) |
11230 | lj_deleter->release (); | |
f107f563 | 11231 | |
cfc31633 | 11232 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11233 | } |
ae66c1fc | 11234 | |
c906108c SS |
11235 | /* This function attempts to parse an optional "if <cond>" clause |
11236 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11237 | |
c906108c SS |
11238 | Else, it returns a pointer to the condition string. (It does not |
11239 | attempt to evaluate the string against a particular block.) And, | |
11240 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11241 | if clause in the arg string. */ |
53a5351d | 11242 | |
63160a43 PA |
11243 | const char * |
11244 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11245 | { |
63160a43 | 11246 | const char *cond_string; |
c5aa993b JM |
11247 | |
11248 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11249 | return NULL; |
c5aa993b | 11250 | |
4a64f543 | 11251 | /* Skip the "if" keyword. */ |
c906108c | 11252 | (*arg) += 2; |
c5aa993b | 11253 | |
c906108c | 11254 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11255 | condition string. */ |
f1735a53 | 11256 | *arg = skip_spaces (*arg); |
c906108c | 11257 | cond_string = *arg; |
c5aa993b | 11258 | |
4a64f543 MS |
11259 | /* Assume that the condition occupies the remainder of the arg |
11260 | string. */ | |
c906108c | 11261 | (*arg) += strlen (cond_string); |
c5aa993b | 11262 | |
c906108c SS |
11263 | return cond_string; |
11264 | } | |
c5aa993b | 11265 | |
c906108c SS |
11266 | /* Commands to deal with catching events, such as signals, exceptions, |
11267 | process start/exit, etc. */ | |
c5aa993b JM |
11268 | |
11269 | typedef enum | |
11270 | { | |
44feb3ce TT |
11271 | catch_fork_temporary, catch_vfork_temporary, |
11272 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11273 | } |
11274 | catch_fork_kind; | |
11275 | ||
c906108c | 11276 | static void |
eb4c3f4a | 11277 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11278 | struct cmd_list_element *command) |
c906108c | 11279 | { |
a6d9a66e | 11280 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11281 | const char *cond_string = NULL; |
44feb3ce | 11282 | catch_fork_kind fork_kind; |
44feb3ce | 11283 | |
0f8e2034 | 11284 | fork_kind = (catch_fork_kind) (uintptr_t) command->context (); |
b650a282 SM |
11285 | bool temp = (fork_kind == catch_fork_temporary |
11286 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11287 | |
44feb3ce TT |
11288 | if (!arg) |
11289 | arg = ""; | |
f1735a53 | 11290 | arg = skip_spaces (arg); |
c5aa993b | 11291 | |
c906108c | 11292 | /* The allowed syntax is: |
c5aa993b JM |
11293 | catch [v]fork |
11294 | catch [v]fork if <cond> | |
11295 | ||
4a64f543 | 11296 | First, check if there's an if clause. */ |
c906108c | 11297 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11298 | |
c906108c | 11299 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11300 | error (_("Junk at end of arguments.")); |
c5aa993b | 11301 | |
c906108c | 11302 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11303 | and enable reporting of such events. */ |
c5aa993b JM |
11304 | switch (fork_kind) |
11305 | { | |
44feb3ce TT |
11306 | case catch_fork_temporary: |
11307 | case catch_fork_permanent: | |
b650a282 | 11308 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
dda83cd7 | 11309 | &catch_fork_breakpoint_ops); |
c906108c | 11310 | break; |
44feb3ce TT |
11311 | case catch_vfork_temporary: |
11312 | case catch_vfork_permanent: | |
b650a282 | 11313 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
dda83cd7 | 11314 | &catch_vfork_breakpoint_ops); |
c906108c | 11315 | break; |
c5aa993b | 11316 | default: |
8a3fe4f8 | 11317 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11318 | break; |
c5aa993b | 11319 | } |
c906108c SS |
11320 | } |
11321 | ||
11322 | static void | |
eb4c3f4a | 11323 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11324 | struct cmd_list_element *command) |
c906108c | 11325 | { |
a6d9a66e | 11326 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11327 | const char *cond_string = NULL; |
0f8e2034 | 11328 | bool temp = command->context () == CATCH_TEMPORARY; |
44feb3ce TT |
11329 | |
11330 | if (!arg) | |
11331 | arg = ""; | |
f1735a53 | 11332 | arg = skip_spaces (arg); |
c906108c SS |
11333 | |
11334 | /* The allowed syntax is: | |
c5aa993b JM |
11335 | catch exec |
11336 | catch exec if <cond> | |
c906108c | 11337 | |
4a64f543 | 11338 | First, check if there's an if clause. */ |
c906108c SS |
11339 | cond_string = ep_parse_optional_if_clause (&arg); |
11340 | ||
11341 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11342 | error (_("Junk at end of arguments.")); |
c906108c | 11343 | |
b270e6f9 | 11344 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
b650a282 | 11345 | init_catchpoint (c.get (), gdbarch, temp, cond_string, |
b4d90040 PA |
11346 | &catch_exec_breakpoint_ops); |
11347 | c->exec_pathname = NULL; | |
11348 | ||
b270e6f9 | 11349 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11350 | } |
c5aa993b | 11351 | |
9ac4176b | 11352 | void |
28010a5d PA |
11353 | init_ada_exception_breakpoint (struct breakpoint *b, |
11354 | struct gdbarch *gdbarch, | |
11355 | struct symtab_and_line sal, | |
f2fc3015 | 11356 | const char *addr_string, |
c0a91b2b | 11357 | const struct breakpoint_ops *ops, |
28010a5d | 11358 | int tempflag, |
349774ef | 11359 | int enabled, |
28010a5d | 11360 | int from_tty) |
f7f9143b | 11361 | { |
f7f9143b JB |
11362 | if (from_tty) |
11363 | { | |
5af949e3 UW |
11364 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11365 | if (!loc_gdbarch) | |
11366 | loc_gdbarch = gdbarch; | |
11367 | ||
6c95b8df PA |
11368 | describe_other_breakpoints (loc_gdbarch, |
11369 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b | 11370 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
dda83cd7 SM |
11371 | version for exception catchpoints, because two catchpoints |
11372 | used for different exception names will use the same address. | |
11373 | In this case, a "breakpoint ... also set at..." warning is | |
11374 | unproductive. Besides, the warning phrasing is also a bit | |
11375 | inappropriate, we should use the word catchpoint, and tell | |
11376 | the user what type of catchpoint it is. The above is good | |
11377 | enough for now, though. */ | |
f7f9143b JB |
11378 | } |
11379 | ||
f06f1252 | 11380 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
f7f9143b | 11381 | |
349774ef | 11382 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11383 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11384 | b->location = string_to_event_location (&addr_string, |
11385 | language_def (language_ada)); | |
f7f9143b | 11386 | b->language = language_ada; |
f7f9143b JB |
11387 | } |
11388 | ||
c906108c SS |
11389 | \f |
11390 | ||
81b1e71c | 11391 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11392 | |
11393 | static int | |
81b1e71c | 11394 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11395 | { |
81b1e71c TT |
11396 | uintptr_t ua = (uintptr_t) a; |
11397 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11398 | |
81b1e71c | 11399 | if (a->number < b->number) |
8a2c437b | 11400 | return -1; |
81b1e71c | 11401 | else if (a->number > b->number) |
8a2c437b TT |
11402 | return 1; |
11403 | ||
11404 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11405 | the number 0. */ | |
11406 | if (ua < ub) | |
11407 | return -1; | |
94b0e70d | 11408 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11409 | } |
11410 | ||
80f8a6eb | 11411 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11412 | |
11413 | static void | |
0b39b52e | 11414 | clear_command (const char *arg, int from_tty) |
c906108c | 11415 | { |
c906108c | 11416 | int default_match; |
c906108c | 11417 | |
6c5b2ebe PA |
11418 | std::vector<symtab_and_line> decoded_sals; |
11419 | symtab_and_line last_sal; | |
11420 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11421 | if (arg) |
11422 | { | |
6c5b2ebe PA |
11423 | decoded_sals |
11424 | = decode_line_with_current_source (arg, | |
11425 | (DECODE_LINE_FUNFIRSTLINE | |
11426 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11427 | default_match = 0; |
6c5b2ebe | 11428 | sals = decoded_sals; |
c906108c SS |
11429 | } |
11430 | else | |
11431 | { | |
1bfeeb0f JL |
11432 | /* Set sal's line, symtab, pc, and pspace to the values |
11433 | corresponding to the last call to print_frame_info. If the | |
11434 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11435 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11436 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11437 | error (_("No source file specified.")); |
c906108c | 11438 | |
c906108c | 11439 | default_match = 1; |
6c5b2ebe | 11440 | sals = last_sal; |
c906108c SS |
11441 | } |
11442 | ||
4a64f543 MS |
11443 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11444 | seems, because all existing breakpoints typically have both | |
11445 | file/line and pc set. So, if clear is given file/line, we can | |
11446 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11447 | |
11448 | We only support clearing given the address explicitly | |
11449 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11450 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11451 | due to optimization, all in one block. |
4a64f543 MS |
11452 | |
11453 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11454 | PC corresponding to the same file:line, the breakpoint won't |
11455 | be cleared. We probably can still clear the breakpoint, but | |
11456 | since the other PC value is never presented to user, user | |
11457 | can only find it by guessing, and it does not seem important | |
11458 | to support that. */ | |
11459 | ||
4a64f543 MS |
11460 | /* For each line spec given, delete bps which correspond to it. Do |
11461 | it in two passes, solely to preserve the current behavior that | |
11462 | from_tty is forced true if we delete more than one | |
11463 | breakpoint. */ | |
c906108c | 11464 | |
81b1e71c | 11465 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11466 | for (const auto &sal : sals) |
c906108c | 11467 | { |
05cba821 JK |
11468 | const char *sal_fullname; |
11469 | ||
c906108c | 11470 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
11471 | If line given (pc == 0), clear all bpts on specified line. |
11472 | If defaulting, clear all bpts on default line | |
11473 | or at default pc. | |
c5aa993b | 11474 | |
dda83cd7 | 11475 | defaulting sal.pc != 0 tests to do |
c5aa993b | 11476 | |
dda83cd7 SM |
11477 | 0 1 pc |
11478 | 1 1 pc _and_ line | |
11479 | 0 0 line | |
11480 | 1 0 <can't happen> */ | |
c906108c | 11481 | |
05cba821 JK |
11482 | sal_fullname = (sal.symtab == NULL |
11483 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11484 | |
4a64f543 | 11485 | /* Find all matching breakpoints and add them to 'found'. */ |
43892fdf | 11486 | for (breakpoint *b : all_breakpoints ()) |
c5aa993b | 11487 | { |
0d381245 | 11488 | int match = 0; |
4a64f543 | 11489 | /* Are we going to delete b? */ |
cc60f2e3 | 11490 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 | 11491 | { |
40cb8ca5 | 11492 | for (bp_location *loc : b->locations ()) |
0d381245 | 11493 | { |
f8eba3c6 TT |
11494 | /* If the user specified file:line, don't allow a PC |
11495 | match. This matches historical gdb behavior. */ | |
11496 | int pc_match = (!sal.explicit_line | |
11497 | && sal.pc | |
11498 | && (loc->pspace == sal.pspace) | |
11499 | && (loc->address == sal.pc) | |
11500 | && (!section_is_overlay (loc->section) | |
11501 | || loc->section == sal.section)); | |
4aac40c8 TT |
11502 | int line_match = 0; |
11503 | ||
11504 | if ((default_match || sal.explicit_line) | |
2f202fde | 11505 | && loc->symtab != NULL |
05cba821 | 11506 | && sal_fullname != NULL |
4aac40c8 | 11507 | && sal.pspace == loc->pspace |
05cba821 JK |
11508 | && loc->line_number == sal.line |
11509 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11510 | sal_fullname) == 0) | |
11511 | line_match = 1; | |
4aac40c8 | 11512 | |
0d381245 VP |
11513 | if (pc_match || line_match) |
11514 | { | |
11515 | match = 1; | |
11516 | break; | |
11517 | } | |
11518 | } | |
11519 | } | |
11520 | ||
11521 | if (match) | |
81b1e71c | 11522 | found.push_back (b); |
c906108c | 11523 | } |
80f8a6eb | 11524 | } |
8a2c437b | 11525 | |
80f8a6eb | 11526 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11527 | if (found.empty ()) |
80f8a6eb MS |
11528 | { |
11529 | if (arg) | |
8a3fe4f8 | 11530 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11531 | else |
8a3fe4f8 | 11532 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11533 | } |
c906108c | 11534 | |
8a2c437b | 11535 | /* Remove duplicates from the vec. */ |
81b1e71c | 11536 | std::sort (found.begin (), found.end (), |
b926417a | 11537 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11538 | { |
b926417a | 11539 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11540 | }); |
11541 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11542 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11543 | { |
b926417a | 11544 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11545 | }), |
11546 | found.end ()); | |
8a2c437b | 11547 | |
81b1e71c | 11548 | if (found.size () > 1) |
4a64f543 | 11549 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11550 | if (from_tty) |
a3f17187 | 11551 | { |
81b1e71c | 11552 | if (found.size () == 1) |
a3f17187 AC |
11553 | printf_unfiltered (_("Deleted breakpoint ")); |
11554 | else | |
11555 | printf_unfiltered (_("Deleted breakpoints ")); | |
11556 | } | |
d6e956e5 | 11557 | |
81b1e71c | 11558 | for (breakpoint *iter : found) |
80f8a6eb | 11559 | { |
c5aa993b | 11560 | if (from_tty) |
81b1e71c TT |
11561 | printf_unfiltered ("%d ", iter->number); |
11562 | delete_breakpoint (iter); | |
c906108c | 11563 | } |
80f8a6eb MS |
11564 | if (from_tty) |
11565 | putchar_unfiltered ('\n'); | |
c906108c SS |
11566 | } |
11567 | \f | |
11568 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11569 | all breakpoints that are marked for deletion, whether hit or not. | |
11570 | This is called after any breakpoint is hit, or after errors. */ | |
11571 | ||
11572 | void | |
fba45db2 | 11573 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11574 | { |
c906108c | 11575 | for (; bs; bs = bs->next) |
f431efe5 PA |
11576 | if (bs->breakpoint_at |
11577 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11578 | && bs->stop) |
f431efe5 | 11579 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11580 | |
1428b37a | 11581 | for (breakpoint *b : all_breakpoints_safe ()) |
b5de0fa7 | 11582 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b | 11583 | delete_breakpoint (b); |
c906108c SS |
11584 | } |
11585 | ||
4a64f543 | 11586 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 11587 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
11588 | bl_address_is_meaningful says), secondarily by ordering first |
11589 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 11590 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
11591 | |
11592 | static int | |
39ef2f62 | 11593 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 11594 | { |
876fa593 | 11595 | if (a->address != b->address) |
39ef2f62 | 11596 | return a->address < b->address; |
876fa593 | 11597 | |
dea2aa5f LM |
11598 | /* Sort locations at the same address by their pspace number, keeping |
11599 | locations of the same inferior (in a multi-inferior environment) | |
11600 | grouped. */ | |
11601 | ||
11602 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 11603 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 11604 | |
876fa593 | 11605 | /* Sort permanent breakpoints first. */ |
1a853c52 | 11606 | if (a->permanent != b->permanent) |
39ef2f62 | 11607 | return a->permanent > b->permanent; |
876fa593 | 11608 | |
7f32a4d5 PA |
11609 | /* Sort by type in order to make duplicate determination easier. |
11610 | See update_global_location_list. This is kept in sync with | |
11611 | breakpoint_locations_match. */ | |
11612 | if (a->loc_type < b->loc_type) | |
11613 | return true; | |
11614 | ||
11615 | /* Likewise, for range-breakpoints, sort by length. */ | |
11616 | if (a->loc_type == bp_loc_hardware_breakpoint | |
11617 | && b->loc_type == bp_loc_hardware_breakpoint | |
11618 | && a->length < b->length) | |
11619 | return true; | |
11620 | ||
c56a97f9 JK |
11621 | /* Make the internal GDB representation stable across GDB runs |
11622 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11623 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11624 | |
11625 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 11626 | return a->owner->number < b->owner->number; |
876fa593 | 11627 | |
39ef2f62 | 11628 | return a < b; |
876fa593 JK |
11629 | } |
11630 | ||
f5336ca5 PA |
11631 | /* Set bp_locations_placed_address_before_address_max and |
11632 | bp_locations_shadow_len_after_address_max according to the current | |
11633 | content of the bp_locations array. */ | |
f7545552 TT |
11634 | |
11635 | static void | |
f5336ca5 | 11636 | bp_locations_target_extensions_update (void) |
f7545552 | 11637 | { |
f5336ca5 PA |
11638 | bp_locations_placed_address_before_address_max = 0; |
11639 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 | 11640 | |
48d7020b | 11641 | for (bp_location *bl : all_bp_locations ()) |
876fa593 JK |
11642 | { |
11643 | CORE_ADDR start, end, addr; | |
11644 | ||
11645 | if (!bp_location_has_shadow (bl)) | |
11646 | continue; | |
11647 | ||
11648 | start = bl->target_info.placed_address; | |
11649 | end = start + bl->target_info.shadow_len; | |
11650 | ||
11651 | gdb_assert (bl->address >= start); | |
11652 | addr = bl->address - start; | |
f5336ca5 PA |
11653 | if (addr > bp_locations_placed_address_before_address_max) |
11654 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11655 | |
11656 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11657 | ||
11658 | gdb_assert (bl->address < end); | |
11659 | addr = end - bl->address; | |
f5336ca5 PA |
11660 | if (addr > bp_locations_shadow_len_after_address_max) |
11661 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11662 | } |
f7545552 TT |
11663 | } |
11664 | ||
1e4d1764 YQ |
11665 | /* Download tracepoint locations if they haven't been. */ |
11666 | ||
11667 | static void | |
11668 | download_tracepoint_locations (void) | |
11669 | { | |
dd2e65cc | 11670 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11671 | |
5ed8105e | 11672 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11673 | |
f6d17b2b | 11674 | for (breakpoint *b : all_tracepoints ()) |
1e4d1764 YQ |
11675 | { |
11676 | struct tracepoint *t; | |
f2a8bc8a | 11677 | int bp_location_downloaded = 0; |
1e4d1764 | 11678 | |
7ed2c994 | 11679 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11680 | ? !may_insert_fast_tracepoints |
11681 | : !may_insert_tracepoints)) | |
11682 | continue; | |
11683 | ||
dd2e65cc YQ |
11684 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11685 | { | |
11686 | if (target_can_download_tracepoint ()) | |
11687 | can_download_tracepoint = TRIBOOL_TRUE; | |
11688 | else | |
11689 | can_download_tracepoint = TRIBOOL_FALSE; | |
11690 | } | |
11691 | ||
11692 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11693 | break; | |
11694 | ||
40cb8ca5 | 11695 | for (bp_location *bl : b->locations ()) |
7ed2c994 YQ |
11696 | { |
11697 | /* In tracepoint, locations are _never_ duplicated, so | |
11698 | should_be_inserted is equivalent to | |
11699 | unduplicated_should_be_inserted. */ | |
11700 | if (!should_be_inserted (bl) || bl->inserted) | |
11701 | continue; | |
1e4d1764 | 11702 | |
7ed2c994 | 11703 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11704 | |
7ed2c994 | 11705 | target_download_tracepoint (bl); |
1e4d1764 | 11706 | |
7ed2c994 | 11707 | bl->inserted = 1; |
f2a8bc8a | 11708 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11709 | } |
11710 | t = (struct tracepoint *) b; | |
11711 | t->number_on_target = b->number; | |
f2a8bc8a | 11712 | if (bp_location_downloaded) |
76727919 | 11713 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11714 | } |
1e4d1764 YQ |
11715 | } |
11716 | ||
934709f0 PW |
11717 | /* Swap the insertion/duplication state between two locations. */ |
11718 | ||
11719 | static void | |
11720 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11721 | { | |
11722 | const int left_inserted = left->inserted; | |
11723 | const int left_duplicate = left->duplicate; | |
b775012e | 11724 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11725 | const struct bp_target_info left_target_info = left->target_info; |
11726 | ||
1e4d1764 YQ |
11727 | /* Locations of tracepoints can never be duplicated. */ |
11728 | if (is_tracepoint (left->owner)) | |
11729 | gdb_assert (!left->duplicate); | |
11730 | if (is_tracepoint (right->owner)) | |
11731 | gdb_assert (!right->duplicate); | |
11732 | ||
934709f0 PW |
11733 | left->inserted = right->inserted; |
11734 | left->duplicate = right->duplicate; | |
b775012e | 11735 | left->needs_update = right->needs_update; |
934709f0 PW |
11736 | left->target_info = right->target_info; |
11737 | right->inserted = left_inserted; | |
11738 | right->duplicate = left_duplicate; | |
b775012e | 11739 | right->needs_update = left_needs_update; |
934709f0 PW |
11740 | right->target_info = left_target_info; |
11741 | } | |
11742 | ||
b775012e LM |
11743 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11744 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11745 | conditions on the target's side. Such conditions need to be updated on | |
11746 | the target. */ | |
11747 | ||
11748 | static void | |
11749 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11750 | { | |
b775012e LM |
11751 | CORE_ADDR address = 0; |
11752 | int pspace_num; | |
11753 | ||
11754 | address = bl->address; | |
11755 | pspace_num = bl->pspace->num; | |
11756 | ||
11757 | /* This is only meaningful if the target is | |
11758 | evaluating conditions and if the user has | |
11759 | opted for condition evaluation on the target's | |
11760 | side. */ | |
11761 | if (gdb_evaluates_breakpoint_condition_p () | |
11762 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11763 | return; | |
11764 | ||
11765 | /* Flag all breakpoint locations with this address and | |
11766 | the same program space as the location | |
11767 | as "its condition has changed". We need to | |
11768 | update the conditions on the target's side. */ | |
e0d9a270 | 11769 | for (bp_location *loc : all_bp_locations_at_addr (address)) |
b775012e | 11770 | { |
b775012e LM |
11771 | if (!is_breakpoint (loc->owner) |
11772 | || pspace_num != loc->pspace->num) | |
11773 | continue; | |
11774 | ||
11775 | /* Flag the location appropriately. We use a different state to | |
11776 | let everyone know that we already updated the set of locations | |
11777 | with addr bl->address and program space bl->pspace. This is so | |
11778 | we don't have to keep calling these functions just to mark locations | |
11779 | that have already been marked. */ | |
11780 | loc->condition_changed = condition_updated; | |
11781 | ||
11782 | /* Free the agent expression bytecode as well. We will compute | |
11783 | it later on. */ | |
833177a4 | 11784 | loc->cond_bytecode.reset (); |
b775012e LM |
11785 | } |
11786 | } | |
7f32a4d5 | 11787 | |
44702360 PA |
11788 | /* Called whether new breakpoints are created, or existing breakpoints |
11789 | deleted, to update the global location list and recompute which | |
11790 | locations are duplicate of which. | |
b775012e | 11791 | |
04086b45 PA |
11792 | The INSERT_MODE flag determines whether locations may not, may, or |
11793 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11794 | info. */ | |
b60e7edf | 11795 | |
0d381245 | 11796 | static void |
44702360 | 11797 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11798 | { |
b775012e LM |
11799 | /* Last breakpoint location address that was marked for update. */ |
11800 | CORE_ADDR last_addr = 0; | |
11801 | /* Last breakpoint location program space that was marked for update. */ | |
11802 | int last_pspace_num = -1; | |
f7545552 | 11803 | |
2d134ed3 PA |
11804 | /* Used in the duplicates detection below. When iterating over all |
11805 | bp_locations, points to the first bp_location of a given address. | |
11806 | Breakpoints and watchpoints of different types are never | |
11807 | duplicates of each other. Keep one pointer for each type of | |
11808 | breakpoint/watchpoint, so we only need to loop over all locations | |
11809 | once. */ | |
11810 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11811 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11812 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11813 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11814 | |
f5336ca5 PA |
11815 | /* Saved former bp_locations array which we compare against the newly |
11816 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
5d51cd5d SM |
11817 | std::vector<bp_location *> old_locations = std::move (bp_locations); |
11818 | bp_locations.clear (); | |
876fa593 | 11819 | |
43892fdf | 11820 | for (breakpoint *b : all_breakpoints ()) |
40cb8ca5 | 11821 | for (bp_location *loc : b->locations ()) |
5d51cd5d | 11822 | bp_locations.push_back (loc); |
7f32a4d5 PA |
11823 | |
11824 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
11825 | breakpoint. Do this before deciding whether locations are | |
11826 | duplicates. Also do this before sorting because sorting order | |
11827 | depends on location type. */ | |
5d51cd5d SM |
11828 | for (bp_location *loc : bp_locations) |
11829 | if (!loc->inserted && should_be_inserted (loc)) | |
7f32a4d5 | 11830 | handle_automatic_hardware_breakpoints (loc); |
7f32a4d5 | 11831 | |
5d51cd5d | 11832 | std::sort (bp_locations.begin (), bp_locations.end (), |
39ef2f62 | 11833 | bp_location_is_less_than); |
876fa593 | 11834 | |
f5336ca5 | 11835 | bp_locations_target_extensions_update (); |
74960c60 | 11836 | |
4a64f543 MS |
11837 | /* Identify bp_location instances that are no longer present in the |
11838 | new list, and therefore should be freed. Note that it's not | |
11839 | necessary that those locations should be removed from inferior -- | |
11840 | if there's another location at the same address (previously | |
11841 | marked as duplicate), we don't need to remove/insert the | |
11842 | location. | |
876fa593 | 11843 | |
4a64f543 MS |
11844 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11845 | and former bp_location array state respectively. */ | |
876fa593 | 11846 | |
5d51cd5d SM |
11847 | size_t loc_i = 0; |
11848 | for (bp_location *old_loc : old_locations) | |
74960c60 | 11849 | { |
e5dd4106 | 11850 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11851 | not, we have to free it. */ |
c7d46a38 | 11852 | int found_object = 0; |
20874c92 VP |
11853 | /* Tells if the location should remain inserted in the target. */ |
11854 | int keep_in_target = 0; | |
11855 | int removed = 0; | |
876fa593 | 11856 | |
4a64f543 MS |
11857 | /* Skip LOCP entries which will definitely never be needed. |
11858 | Stop either at or being the one matching OLD_LOC. */ | |
5d51cd5d SM |
11859 | while (loc_i < bp_locations.size () |
11860 | && bp_locations[loc_i]->address < old_loc->address) | |
11861 | loc_i++; | |
c7d46a38 | 11862 | |
5d51cd5d SM |
11863 | for (size_t loc2_i = loc_i; |
11864 | (loc2_i < bp_locations.size () | |
11865 | && bp_locations[loc2_i]->address == old_loc->address); | |
11866 | loc2_i++) | |
c7d46a38 | 11867 | { |
b775012e LM |
11868 | /* Check if this is a new/duplicated location or a duplicated |
11869 | location that had its condition modified. If so, we want to send | |
11870 | its condition to the target if evaluation of conditions is taking | |
11871 | place there. */ | |
5d51cd5d | 11872 | if (bp_locations[loc2_i]->condition_changed == condition_modified |
b775012e LM |
11873 | && (last_addr != old_loc->address |
11874 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11875 | { |
5d51cd5d | 11876 | force_breakpoint_reinsertion (bp_locations[loc2_i]); |
b775012e | 11877 | last_pspace_num = old_loc->pspace->num; |
c7d46a38 | 11878 | } |
b775012e | 11879 | |
5d51cd5d | 11880 | if (bp_locations[loc2_i] == old_loc) |
b775012e | 11881 | found_object = 1; |
c7d46a38 | 11882 | } |
74960c60 | 11883 | |
b775012e LM |
11884 | /* We have already handled this address, update it so that we don't |
11885 | have to go through updates again. */ | |
11886 | last_addr = old_loc->address; | |
11887 | ||
11888 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11889 | if (!found_object) | |
11890 | force_breakpoint_reinsertion (old_loc); | |
11891 | ||
4a64f543 MS |
11892 | /* If this location is no longer present, and inserted, look if |
11893 | there's maybe a new location at the same address. If so, | |
11894 | mark that one inserted, and don't remove this one. This is | |
11895 | needed so that we don't have a time window where a breakpoint | |
11896 | at certain location is not inserted. */ | |
74960c60 | 11897 | |
876fa593 | 11898 | if (old_loc->inserted) |
0d381245 | 11899 | { |
4a64f543 MS |
11900 | /* If the location is inserted now, we might have to remove |
11901 | it. */ | |
74960c60 | 11902 | |
876fa593 | 11903 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11904 | { |
4a64f543 MS |
11905 | /* The location is still present in the location list, |
11906 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11907 | keep_in_target = 1; |
74960c60 VP |
11908 | } |
11909 | else | |
11910 | { | |
b775012e LM |
11911 | /* This location still exists, but it won't be kept in the |
11912 | target since it may have been disabled. We proceed to | |
11913 | remove its target-side condition. */ | |
11914 | ||
4a64f543 MS |
11915 | /* The location is either no longer present, or got |
11916 | disabled. See if there's another location at the | |
11917 | same address, in which case we don't need to remove | |
11918 | this one from the target. */ | |
876fa593 | 11919 | |
2bdf28a0 | 11920 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11921 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11922 | { |
5d51cd5d SM |
11923 | for (size_t loc2_i = loc_i; |
11924 | (loc2_i < bp_locations.size () | |
11925 | && bp_locations[loc2_i]->address == old_loc->address); | |
11926 | loc2_i++) | |
876fa593 | 11927 | { |
5d51cd5d | 11928 | bp_location *loc2 = bp_locations[loc2_i]; |
876fa593 | 11929 | |
7f32a4d5 PA |
11930 | if (loc2 == old_loc) |
11931 | continue; | |
11932 | ||
2d134ed3 | 11933 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11934 | { |
85d721b8 PA |
11935 | /* Read watchpoint locations are switched to |
11936 | access watchpoints, if the former are not | |
11937 | supported, but the latter are. */ | |
11938 | if (is_hardware_watchpoint (old_loc->owner)) | |
11939 | { | |
11940 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11941 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11942 | } | |
11943 | ||
934709f0 PW |
11944 | /* loc2 is a duplicated location. We need to check |
11945 | if it should be inserted in case it will be | |
11946 | unduplicated. */ | |
7f32a4d5 | 11947 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 11948 | { |
934709f0 | 11949 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11950 | keep_in_target = 1; |
11951 | break; | |
11952 | } | |
876fa593 JK |
11953 | } |
11954 | } | |
11955 | } | |
74960c60 VP |
11956 | } |
11957 | ||
20874c92 VP |
11958 | if (!keep_in_target) |
11959 | { | |
834c0d03 | 11960 | if (remove_breakpoint (old_loc)) |
20874c92 | 11961 | { |
4a64f543 MS |
11962 | /* This is just about all we can do. We could keep |
11963 | this location on the global list, and try to | |
11964 | remove it next time, but there's no particular | |
11965 | reason why we will succeed next time. | |
20874c92 | 11966 | |
4a64f543 MS |
11967 | Note that at this point, old_loc->owner is still |
11968 | valid, as delete_breakpoint frees the breakpoint | |
11969 | only after calling us. */ | |
3e43a32a MS |
11970 | printf_filtered (_("warning: Error removing " |
11971 | "breakpoint %d\n"), | |
876fa593 | 11972 | old_loc->owner->number); |
20874c92 VP |
11973 | } |
11974 | removed = 1; | |
11975 | } | |
0d381245 | 11976 | } |
74960c60 VP |
11977 | |
11978 | if (!found_object) | |
1c5cfe86 | 11979 | { |
fbea99ea | 11980 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11981 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11982 | { |
db82e815 PA |
11983 | /* This location was removed from the target. In |
11984 | non-stop mode, a race condition is possible where | |
11985 | we've removed a breakpoint, but stop events for that | |
11986 | breakpoint are already queued and will arrive later. | |
11987 | We apply an heuristic to be able to distinguish such | |
11988 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11989 | breakpoint location for a bit, and will retire it | |
11990 | after we see some number of events. The theory here | |
11991 | is that reporting of events should, "on the average", | |
11992 | be fair, so after a while we'll see events from all | |
11993 | threads that have anything of interest, and no longer | |
11994 | need to keep this breakpoint location around. We | |
11995 | don't hold locations forever so to reduce chances of | |
11996 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11997 | SIGTRAP. | |
11998 | ||
11999 | The heuristic failing can be disastrous on | |
12000 | decr_pc_after_break targets. | |
12001 | ||
12002 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12003 | if we fail to recognize a late breakpoint SIGTRAP, | |
12004 | because events_till_retirement has reached 0 too | |
12005 | soon, we'll fail to do the PC adjustment, and report | |
12006 | a random SIGTRAP to the user. When the user resumes | |
12007 | the inferior, it will most likely immediately crash | |
2dec564e | 12008 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12009 | corrupted, because of being resumed e.g., in the |
12010 | middle of a multi-byte instruction, or skipped a | |
12011 | one-byte instruction. This was actually seen happen | |
12012 | on native x86-linux, and should be less rare on | |
12013 | targets that do not support new thread events, like | |
12014 | remote, due to the heuristic depending on | |
12015 | thread_count. | |
12016 | ||
12017 | Mistaking a random SIGTRAP for a breakpoint trap | |
12018 | causes similar symptoms (PC adjustment applied when | |
12019 | it shouldn't), but then again, playing with SIGTRAPs | |
12020 | behind the debugger's back is asking for trouble. | |
12021 | ||
12022 | Since hardware watchpoint traps are always | |
12023 | distinguishable from other traps, so we don't need to | |
12024 | apply keep hardware watchpoint moribund locations | |
12025 | around. We simply always ignore hardware watchpoint | |
12026 | traps we can no longer explain. */ | |
12027 | ||
5b6d1e4f PA |
12028 | process_stratum_target *proc_target = nullptr; |
12029 | for (inferior *inf : all_inferiors ()) | |
12030 | if (inf->pspace == old_loc->pspace) | |
12031 | { | |
12032 | proc_target = inf->process_target (); | |
12033 | break; | |
12034 | } | |
12035 | if (proc_target != nullptr) | |
12036 | old_loc->events_till_retirement | |
12037 | = 3 * (thread_count (proc_target) + 1); | |
12038 | else | |
12039 | old_loc->events_till_retirement = 1; | |
876fa593 | 12040 | old_loc->owner = NULL; |
20874c92 | 12041 | |
1123588c | 12042 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
12043 | } |
12044 | else | |
f431efe5 PA |
12045 | { |
12046 | old_loc->owner = NULL; | |
12047 | decref_bp_location (&old_loc); | |
12048 | } | |
20874c92 | 12049 | } |
74960c60 | 12050 | } |
1c5cfe86 | 12051 | |
348d480f PA |
12052 | /* Rescan breakpoints at the same address and section, marking the |
12053 | first one as "first" and any others as "duplicates". This is so | |
12054 | that the bpt instruction is only inserted once. If we have a | |
12055 | permanent breakpoint at the same place as BPT, make that one the | |
12056 | official one, and the rest as duplicates. Permanent breakpoints | |
12057 | are sorted first for the same address. | |
12058 | ||
12059 | Do the same for hardware watchpoints, but also considering the | |
12060 | watchpoint's type (regular/access/read) and length. */ | |
12061 | ||
12062 | bp_loc_first = NULL; | |
12063 | wp_loc_first = NULL; | |
12064 | awp_loc_first = NULL; | |
12065 | rwp_loc_first = NULL; | |
40cb8ca5 | 12066 | |
48d7020b | 12067 | for (bp_location *loc : all_bp_locations ()) |
348d480f PA |
12068 | { |
12069 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12070 | non-NULL. */ | |
348d480f | 12071 | struct bp_location **loc_first_p; |
43892fdf | 12072 | breakpoint *b = loc->owner; |
348d480f | 12073 | |
6f380991 | 12074 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 12075 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
12076 | /* Don't detect duplicate for tracepoint locations because they are |
12077 | never duplicated. See the comments in field `duplicate' of | |
12078 | `struct bp_location'. */ | |
348d480f | 12079 | || is_tracepoint (b)) |
b775012e LM |
12080 | { |
12081 | /* Clear the condition modification flag. */ | |
12082 | loc->condition_changed = condition_unchanged; | |
12083 | continue; | |
12084 | } | |
348d480f | 12085 | |
348d480f PA |
12086 | if (b->type == bp_hardware_watchpoint) |
12087 | loc_first_p = &wp_loc_first; | |
12088 | else if (b->type == bp_read_watchpoint) | |
12089 | loc_first_p = &rwp_loc_first; | |
12090 | else if (b->type == bp_access_watchpoint) | |
12091 | loc_first_p = &awp_loc_first; | |
12092 | else | |
12093 | loc_first_p = &bp_loc_first; | |
12094 | ||
12095 | if (*loc_first_p == NULL | |
12096 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12097 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12098 | { | |
12099 | *loc_first_p = loc; | |
12100 | loc->duplicate = 0; | |
b775012e LM |
12101 | |
12102 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12103 | { | |
12104 | loc->needs_update = 1; | |
12105 | /* Clear the condition modification flag. */ | |
12106 | loc->condition_changed = condition_unchanged; | |
12107 | } | |
348d480f PA |
12108 | continue; |
12109 | } | |
12110 | ||
934709f0 PW |
12111 | |
12112 | /* This and the above ensure the invariant that the first location | |
12113 | is not duplicated, and is the inserted one. | |
12114 | All following are marked as duplicated, and are not inserted. */ | |
12115 | if (loc->inserted) | |
12116 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12117 | loc->duplicate = 1; |
12118 | ||
b775012e LM |
12119 | /* Clear the condition modification flag. */ |
12120 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12121 | } |
12122 | ||
a25a5a45 | 12123 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12124 | { |
04086b45 | 12125 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12126 | insert_breakpoint_locations (); |
12127 | else | |
12128 | { | |
44702360 PA |
12129 | /* Even though the caller told us to not insert new |
12130 | locations, we may still need to update conditions on the | |
12131 | target's side of breakpoints that were already inserted | |
12132 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12133 | only update conditions for locations that are marked |
12134 | "needs_update". */ | |
12135 | update_inserted_breakpoint_locations (); | |
12136 | } | |
12137 | } | |
348d480f | 12138 | |
04086b45 | 12139 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12140 | download_tracepoint_locations (); |
348d480f PA |
12141 | } |
12142 | ||
12143 | void | |
12144 | breakpoint_retire_moribund (void) | |
12145 | { | |
1123588c TT |
12146 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12147 | { | |
12148 | struct bp_location *loc = moribund_locations[ix]; | |
12149 | if (--(loc->events_till_retirement) == 0) | |
12150 | { | |
12151 | decref_bp_location (&loc); | |
12152 | unordered_remove (moribund_locations, ix); | |
12153 | --ix; | |
12154 | } | |
12155 | } | |
348d480f PA |
12156 | } |
12157 | ||
12158 | static void | |
44702360 | 12159 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12160 | { |
348d480f | 12161 | |
a70b8144 | 12162 | try |
492d29ea PA |
12163 | { |
12164 | update_global_location_list (insert_mode); | |
12165 | } | |
230d2906 | 12166 | catch (const gdb_exception_error &e) |
492d29ea PA |
12167 | { |
12168 | } | |
348d480f PA |
12169 | } |
12170 | ||
12171 | /* Clear BKP from a BPS. */ | |
12172 | ||
12173 | static void | |
12174 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12175 | { | |
12176 | bpstat bs; | |
12177 | ||
12178 | for (bs = bps; bs; bs = bs->next) | |
12179 | if (bs->breakpoint_at == bpt) | |
12180 | { | |
12181 | bs->breakpoint_at = NULL; | |
12182 | bs->old_val = NULL; | |
12183 | /* bs->commands will be freed later. */ | |
12184 | } | |
12185 | } | |
12186 | ||
12187 | /* Callback for iterate_over_threads. */ | |
12188 | static int | |
12189 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12190 | { | |
9a3c8263 | 12191 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12192 | |
12193 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12194 | return 0; | |
12195 | } | |
12196 | ||
12197 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12198 | callbacks. */ | |
12199 | ||
12200 | static void | |
12201 | say_where (struct breakpoint *b) | |
12202 | { | |
12203 | struct value_print_options opts; | |
12204 | ||
12205 | get_user_print_options (&opts); | |
12206 | ||
12207 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12208 | single string. */ | |
12209 | if (b->loc == NULL) | |
12210 | { | |
f00aae0f KS |
12211 | /* For pending locations, the output differs slightly based |
12212 | on b->extra_string. If this is non-NULL, it contains either | |
12213 | a condition or dprintf arguments. */ | |
12214 | if (b->extra_string == NULL) | |
12215 | { | |
12216 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12217 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12218 | } |
12219 | else if (b->type == bp_dprintf) | |
12220 | { | |
12221 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12222 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12223 | b->extra_string); |
12224 | } | |
12225 | else | |
12226 | { | |
12227 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12228 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12229 | b->extra_string); |
12230 | } | |
348d480f PA |
12231 | } |
12232 | else | |
12233 | { | |
2f202fde | 12234 | if (opts.addressprint || b->loc->symtab == NULL) |
6a831f06 PA |
12235 | printf_filtered (" at %ps", |
12236 | styled_string (address_style.style (), | |
12237 | paddress (b->loc->gdbarch, | |
12238 | b->loc->address))); | |
2f202fde | 12239 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12240 | { |
12241 | /* If there is a single location, we can print the location | |
12242 | more nicely. */ | |
12243 | if (b->loc->next == NULL) | |
0bb296cb | 12244 | { |
6a831f06 PA |
12245 | const char *filename |
12246 | = symtab_to_filename_for_display (b->loc->symtab); | |
12247 | printf_filtered (": file %ps, line %d.", | |
12248 | styled_string (file_name_style.style (), | |
12249 | filename), | |
0bb296cb TT |
12250 | b->loc->line_number); |
12251 | } | |
f8eba3c6 TT |
12252 | else |
12253 | /* This is not ideal, but each location may have a | |
12254 | different file name, and this at least reflects the | |
12255 | real situation somewhat. */ | |
f00aae0f | 12256 | printf_filtered (": %s.", |
d28cd78a | 12257 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12258 | } |
348d480f PA |
12259 | |
12260 | if (b->loc->next) | |
12261 | { | |
12262 | struct bp_location *loc = b->loc; | |
12263 | int n = 0; | |
12264 | for (; loc; loc = loc->next) | |
12265 | ++n; | |
12266 | printf_filtered (" (%d locations)", n); | |
12267 | } | |
12268 | } | |
12269 | } | |
12270 | ||
5f486660 | 12271 | bp_location::~bp_location () |
348d480f | 12272 | { |
5f486660 | 12273 | xfree (function_name); |
348d480f PA |
12274 | } |
12275 | ||
c1fc2657 | 12276 | /* Destructor for the breakpoint base class. */ |
348d480f | 12277 | |
c1fc2657 | 12278 | breakpoint::~breakpoint () |
348d480f | 12279 | { |
c1fc2657 SM |
12280 | xfree (this->cond_string); |
12281 | xfree (this->extra_string); | |
348d480f PA |
12282 | } |
12283 | ||
40cb8ca5 SM |
12284 | /* See breakpoint.h. */ |
12285 | ||
12286 | bp_locations_range breakpoint::locations () | |
12287 | { | |
12288 | return bp_locations_range (this->loc); | |
12289 | } | |
12290 | ||
2060206e PA |
12291 | static struct bp_location * |
12292 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12293 | { |
5f486660 | 12294 | return new bp_location (self); |
348d480f PA |
12295 | } |
12296 | ||
2060206e PA |
12297 | static void |
12298 | base_breakpoint_re_set (struct breakpoint *b) | |
12299 | { | |
12300 | /* Nothing to re-set. */ | |
12301 | } | |
12302 | ||
12303 | #define internal_error_pure_virtual_called() \ | |
12304 | gdb_assert_not_reached ("pure virtual function called") | |
12305 | ||
12306 | static int | |
12307 | base_breakpoint_insert_location (struct bp_location *bl) | |
12308 | { | |
12309 | internal_error_pure_virtual_called (); | |
12310 | } | |
12311 | ||
12312 | static int | |
73971819 PA |
12313 | base_breakpoint_remove_location (struct bp_location *bl, |
12314 | enum remove_bp_reason reason) | |
2060206e PA |
12315 | { |
12316 | internal_error_pure_virtual_called (); | |
12317 | } | |
12318 | ||
12319 | static int | |
12320 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12321 | const address_space *aspace, |
09ac7c10 TT |
12322 | CORE_ADDR bp_addr, |
12323 | const struct target_waitstatus *ws) | |
2060206e PA |
12324 | { |
12325 | internal_error_pure_virtual_called (); | |
12326 | } | |
12327 | ||
12328 | static void | |
12329 | base_breakpoint_check_status (bpstat bs) | |
12330 | { | |
12331 | /* Always stop. */ | |
12332 | } | |
12333 | ||
12334 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12335 | errors. */ | |
12336 | ||
12337 | static int | |
12338 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12339 | { | |
12340 | internal_error_pure_virtual_called (); | |
12341 | } | |
12342 | ||
12343 | /* A "resources_needed" breakpoint_ops method that just internal | |
12344 | errors. */ | |
12345 | ||
12346 | static int | |
12347 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12348 | { | |
12349 | internal_error_pure_virtual_called (); | |
12350 | } | |
12351 | ||
12352 | static enum print_stop_action | |
12353 | base_breakpoint_print_it (bpstat bs) | |
12354 | { | |
12355 | internal_error_pure_virtual_called (); | |
12356 | } | |
12357 | ||
12358 | static void | |
12359 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12360 | struct ui_out *uiout) | |
12361 | { | |
12362 | /* nothing */ | |
12363 | } | |
12364 | ||
12365 | static void | |
12366 | base_breakpoint_print_mention (struct breakpoint *b) | |
12367 | { | |
12368 | internal_error_pure_virtual_called (); | |
12369 | } | |
12370 | ||
12371 | static void | |
12372 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12373 | { | |
12374 | internal_error_pure_virtual_called (); | |
12375 | } | |
12376 | ||
983af33b | 12377 | static void |
f00aae0f | 12378 | base_breakpoint_create_sals_from_location |
626d2320 | 12379 | (struct event_location *location, |
f00aae0f KS |
12380 | struct linespec_result *canonical, |
12381 | enum bptype type_wanted) | |
983af33b SDJ |
12382 | { |
12383 | internal_error_pure_virtual_called (); | |
12384 | } | |
12385 | ||
12386 | static void | |
12387 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12388 | struct linespec_result *c, | |
e1e01040 PA |
12389 | gdb::unique_xmalloc_ptr<char> cond_string, |
12390 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12391 | enum bptype type_wanted, |
12392 | enum bpdisp disposition, | |
12393 | int thread, | |
12394 | int task, int ignore_count, | |
12395 | const struct breakpoint_ops *o, | |
12396 | int from_tty, int enabled, | |
44f238bb | 12397 | int internal, unsigned flags) |
983af33b SDJ |
12398 | { |
12399 | internal_error_pure_virtual_called (); | |
12400 | } | |
12401 | ||
6c5b2ebe | 12402 | static std::vector<symtab_and_line> |
f00aae0f | 12403 | base_breakpoint_decode_location (struct breakpoint *b, |
626d2320 | 12404 | struct event_location *location, |
6c5b2ebe | 12405 | struct program_space *search_pspace) |
983af33b SDJ |
12406 | { |
12407 | internal_error_pure_virtual_called (); | |
12408 | } | |
12409 | ||
ab04a2af TT |
12410 | /* The default 'explains_signal' method. */ |
12411 | ||
47591c29 | 12412 | static int |
427cd150 | 12413 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12414 | { |
47591c29 | 12415 | return 1; |
ab04a2af TT |
12416 | } |
12417 | ||
9d6e6e84 HZ |
12418 | /* The default "after_condition_true" method. */ |
12419 | ||
12420 | static void | |
12421 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12422 | { | |
12423 | /* Nothing to do. */ | |
12424 | } | |
12425 | ||
ab04a2af | 12426 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12427 | { |
2060206e PA |
12428 | base_breakpoint_allocate_location, |
12429 | base_breakpoint_re_set, | |
12430 | base_breakpoint_insert_location, | |
12431 | base_breakpoint_remove_location, | |
12432 | base_breakpoint_breakpoint_hit, | |
12433 | base_breakpoint_check_status, | |
12434 | base_breakpoint_resources_needed, | |
12435 | base_breakpoint_works_in_software_mode, | |
12436 | base_breakpoint_print_it, | |
12437 | NULL, | |
12438 | base_breakpoint_print_one_detail, | |
12439 | base_breakpoint_print_mention, | |
983af33b | 12440 | base_breakpoint_print_recreate, |
5f700d83 | 12441 | base_breakpoint_create_sals_from_location, |
983af33b | 12442 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12443 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12444 | base_breakpoint_explains_signal, |
12445 | base_breakpoint_after_condition_true, | |
2060206e PA |
12446 | }; |
12447 | ||
12448 | /* Default breakpoint_ops methods. */ | |
12449 | ||
12450 | static void | |
348d480f PA |
12451 | bkpt_re_set (struct breakpoint *b) |
12452 | { | |
06edf0c0 | 12453 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12454 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12455 | { |
f00aae0f | 12456 | /* Anything without a location can't be re-set. */ |
348d480f | 12457 | delete_breakpoint (b); |
06edf0c0 | 12458 | return; |
348d480f | 12459 | } |
06edf0c0 PA |
12460 | |
12461 | breakpoint_re_set_default (b); | |
348d480f PA |
12462 | } |
12463 | ||
2060206e | 12464 | static int |
348d480f PA |
12465 | bkpt_insert_location (struct bp_location *bl) |
12466 | { | |
cd6c3b4f YQ |
12467 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12468 | ||
579c6ad9 | 12469 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12470 | bl->target_info.placed_address = addr; |
12471 | ||
348d480f | 12472 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12473 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12474 | else |
7c16b83e | 12475 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12476 | } |
12477 | ||
2060206e | 12478 | static int |
73971819 | 12479 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12480 | { |
12481 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12482 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12483 | else | |
73971819 | 12484 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12485 | } |
12486 | ||
2060206e | 12487 | static int |
348d480f | 12488 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12489 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12490 | const struct target_waitstatus *ws) |
348d480f | 12491 | { |
09ac7c10 | 12492 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12493 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12494 | return 0; |
12495 | ||
348d480f PA |
12496 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12497 | aspace, bp_addr)) | |
12498 | return 0; | |
12499 | ||
12500 | if (overlay_debugging /* unmapped overlay section */ | |
12501 | && section_is_overlay (bl->section) | |
12502 | && !section_is_mapped (bl->section)) | |
12503 | return 0; | |
12504 | ||
12505 | return 1; | |
12506 | } | |
12507 | ||
cd1608cc PA |
12508 | static int |
12509 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12510 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12511 | const struct target_waitstatus *ws) |
12512 | { | |
12513 | if (dprintf_style == dprintf_style_agent | |
12514 | && target_can_run_breakpoint_commands ()) | |
12515 | { | |
12516 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12517 | for this address it must be for a breakpoint that happens to | |
12518 | be set at the same address. */ | |
12519 | return 0; | |
12520 | } | |
12521 | ||
12522 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12523 | } | |
12524 | ||
2060206e | 12525 | static int |
348d480f PA |
12526 | bkpt_resources_needed (const struct bp_location *bl) |
12527 | { | |
12528 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12529 | ||
12530 | return 1; | |
12531 | } | |
12532 | ||
2060206e | 12533 | static enum print_stop_action |
348d480f PA |
12534 | bkpt_print_it (bpstat bs) |
12535 | { | |
348d480f PA |
12536 | struct breakpoint *b; |
12537 | const struct bp_location *bl; | |
001c8c33 | 12538 | int bp_temp; |
79a45e25 | 12539 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12540 | |
12541 | gdb_assert (bs->bp_location_at != NULL); | |
12542 | ||
b6433ede | 12543 | bl = bs->bp_location_at.get (); |
348d480f PA |
12544 | b = bs->breakpoint_at; |
12545 | ||
001c8c33 PA |
12546 | bp_temp = b->disposition == disp_del; |
12547 | if (bl->address != bl->requested_address) | |
12548 | breakpoint_adjustment_warning (bl->requested_address, | |
12549 | bl->address, | |
12550 | b->number, 1); | |
12551 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12552 | maybe_print_thread_hit_breakpoint (uiout); |
12553 | ||
112e8700 | 12554 | if (uiout->is_mi_like_p ()) |
348d480f | 12555 | { |
112e8700 | 12556 | uiout->field_string ("reason", |
001c8c33 | 12557 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12558 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12559 | } |
6a831f06 PA |
12560 | if (bp_temp) |
12561 | uiout->message ("Temporary breakpoint %pF, ", | |
12562 | signed_field ("bkptno", b->number)); | |
12563 | else | |
12564 | uiout->message ("Breakpoint %pF, ", | |
12565 | signed_field ("bkptno", b->number)); | |
06edf0c0 | 12566 | |
001c8c33 | 12567 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12568 | } |
12569 | ||
2060206e | 12570 | static void |
06edf0c0 PA |
12571 | bkpt_print_mention (struct breakpoint *b) |
12572 | { | |
112e8700 | 12573 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12574 | return; |
12575 | ||
12576 | switch (b->type) | |
12577 | { | |
12578 | case bp_breakpoint: | |
12579 | case bp_gnu_ifunc_resolver: | |
12580 | if (b->disposition == disp_del) | |
12581 | printf_filtered (_("Temporary breakpoint")); | |
12582 | else | |
12583 | printf_filtered (_("Breakpoint")); | |
12584 | printf_filtered (_(" %d"), b->number); | |
12585 | if (b->type == bp_gnu_ifunc_resolver) | |
12586 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12587 | break; | |
12588 | case bp_hardware_breakpoint: | |
12589 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12590 | break; | |
e7e0cddf SS |
12591 | case bp_dprintf: |
12592 | printf_filtered (_("Dprintf %d"), b->number); | |
12593 | break; | |
06edf0c0 PA |
12594 | } |
12595 | ||
12596 | say_where (b); | |
12597 | } | |
12598 | ||
2060206e | 12599 | static void |
06edf0c0 PA |
12600 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12601 | { | |
12602 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12603 | fprintf_unfiltered (fp, "tbreak"); | |
12604 | else if (tp->type == bp_breakpoint) | |
12605 | fprintf_unfiltered (fp, "break"); | |
12606 | else if (tp->type == bp_hardware_breakpoint | |
12607 | && tp->disposition == disp_del) | |
12608 | fprintf_unfiltered (fp, "thbreak"); | |
12609 | else if (tp->type == bp_hardware_breakpoint) | |
12610 | fprintf_unfiltered (fp, "hbreak"); | |
12611 | else | |
12612 | internal_error (__FILE__, __LINE__, | |
12613 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12614 | ||
f00aae0f | 12615 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12616 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12617 | |
12618 | /* Print out extra_string if this breakpoint is pending. It might | |
12619 | contain, for example, conditions that were set by the user. */ | |
12620 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12621 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12622 | ||
dd11a36c | 12623 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12624 | } |
12625 | ||
983af33b | 12626 | static void |
626d2320 | 12627 | bkpt_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
12628 | struct linespec_result *canonical, |
12629 | enum bptype type_wanted) | |
983af33b | 12630 | { |
f00aae0f | 12631 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12632 | } |
12633 | ||
12634 | static void | |
12635 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12636 | struct linespec_result *canonical, | |
e1e01040 PA |
12637 | gdb::unique_xmalloc_ptr<char> cond_string, |
12638 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12639 | enum bptype type_wanted, |
12640 | enum bpdisp disposition, | |
12641 | int thread, | |
12642 | int task, int ignore_count, | |
12643 | const struct breakpoint_ops *ops, | |
12644 | int from_tty, int enabled, | |
44f238bb | 12645 | int internal, unsigned flags) |
983af33b | 12646 | { |
023fa29b | 12647 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12648 | std::move (cond_string), |
12649 | std::move (extra_string), | |
e7e0cddf | 12650 | type_wanted, |
983af33b SDJ |
12651 | disposition, thread, task, |
12652 | ignore_count, ops, from_tty, | |
44f238bb | 12653 | enabled, internal, flags); |
983af33b SDJ |
12654 | } |
12655 | ||
6c5b2ebe | 12656 | static std::vector<symtab_and_line> |
f00aae0f | 12657 | bkpt_decode_location (struct breakpoint *b, |
626d2320 | 12658 | struct event_location *location, |
6c5b2ebe | 12659 | struct program_space *search_pspace) |
983af33b | 12660 | { |
6c5b2ebe | 12661 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12662 | } |
12663 | ||
06edf0c0 PA |
12664 | /* Virtual table for internal breakpoints. */ |
12665 | ||
12666 | static void | |
12667 | internal_bkpt_re_set (struct breakpoint *b) | |
12668 | { | |
12669 | switch (b->type) | |
12670 | { | |
12671 | /* Delete overlay event and longjmp master breakpoints; they | |
12672 | will be reset later by breakpoint_re_set. */ | |
12673 | case bp_overlay_event: | |
12674 | case bp_longjmp_master: | |
12675 | case bp_std_terminate_master: | |
12676 | case bp_exception_master: | |
12677 | delete_breakpoint (b); | |
12678 | break; | |
12679 | ||
12680 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 12681 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
12682 | case bp_shlib_event: |
12683 | ||
12684 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12685 | it is set up, we do not want to touch it. */ | |
12686 | case bp_thread_event: | |
12687 | break; | |
12688 | } | |
12689 | } | |
12690 | ||
12691 | static void | |
12692 | internal_bkpt_check_status (bpstat bs) | |
12693 | { | |
a9b3a50f PA |
12694 | if (bs->breakpoint_at->type == bp_shlib_event) |
12695 | { | |
12696 | /* If requested, stop when the dynamic linker notifies GDB of | |
12697 | events. This allows the user to get control and place | |
12698 | breakpoints in initializer routines for dynamically loaded | |
12699 | objects (among other things). */ | |
12700 | bs->stop = stop_on_solib_events; | |
12701 | bs->print = stop_on_solib_events; | |
12702 | } | |
12703 | else | |
12704 | bs->stop = 0; | |
06edf0c0 PA |
12705 | } |
12706 | ||
12707 | static enum print_stop_action | |
12708 | internal_bkpt_print_it (bpstat bs) | |
12709 | { | |
06edf0c0 | 12710 | struct breakpoint *b; |
06edf0c0 | 12711 | |
06edf0c0 PA |
12712 | b = bs->breakpoint_at; |
12713 | ||
06edf0c0 PA |
12714 | switch (b->type) |
12715 | { | |
348d480f PA |
12716 | case bp_shlib_event: |
12717 | /* Did we stop because the user set the stop_on_solib_events | |
12718 | variable? (If so, we report this as a generic, "Stopped due | |
12719 | to shlib event" message.) */ | |
edcc5120 | 12720 | print_solib_event (0); |
348d480f PA |
12721 | break; |
12722 | ||
12723 | case bp_thread_event: | |
12724 | /* Not sure how we will get here. | |
12725 | GDB should not stop for these breakpoints. */ | |
12726 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12727 | break; |
12728 | ||
12729 | case bp_overlay_event: | |
12730 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12731 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12732 | break; |
12733 | ||
12734 | case bp_longjmp_master: | |
12735 | /* These should never be enabled. */ | |
12736 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12737 | break; |
12738 | ||
12739 | case bp_std_terminate_master: | |
12740 | /* These should never be enabled. */ | |
12741 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12742 | "gdb should not stop!\n")); | |
348d480f PA |
12743 | break; |
12744 | ||
12745 | case bp_exception_master: | |
12746 | /* These should never be enabled. */ | |
12747 | printf_filtered (_("Exception Master Breakpoint: " | |
12748 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12749 | break; |
12750 | } | |
12751 | ||
001c8c33 | 12752 | return PRINT_NOTHING; |
06edf0c0 PA |
12753 | } |
12754 | ||
12755 | static void | |
12756 | internal_bkpt_print_mention (struct breakpoint *b) | |
12757 | { | |
12758 | /* Nothing to mention. These breakpoints are internal. */ | |
12759 | } | |
12760 | ||
06edf0c0 PA |
12761 | /* Virtual table for momentary breakpoints */ |
12762 | ||
12763 | static void | |
12764 | momentary_bkpt_re_set (struct breakpoint *b) | |
12765 | { | |
12766 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12767 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12768 | Otherwise these should have been blown away via the cleanup chain |
12769 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12770 | } | |
12771 | ||
12772 | static void | |
12773 | momentary_bkpt_check_status (bpstat bs) | |
12774 | { | |
12775 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12776 | } | |
12777 | ||
12778 | static enum print_stop_action | |
12779 | momentary_bkpt_print_it (bpstat bs) | |
12780 | { | |
001c8c33 | 12781 | return PRINT_UNKNOWN; |
348d480f PA |
12782 | } |
12783 | ||
06edf0c0 PA |
12784 | static void |
12785 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12786 | { |
06edf0c0 | 12787 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12788 | } |
12789 | ||
e2e4d78b JK |
12790 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12791 | ||
12792 | It gets cleared already on the removal of the first one of such placed | |
12793 | breakpoints. This is OK as they get all removed altogether. */ | |
12794 | ||
c1fc2657 | 12795 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12796 | { |
c1fc2657 | 12797 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12798 | |
c1fc2657 | 12799 | if (tp != NULL) |
e2e4d78b | 12800 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12801 | } |
12802 | ||
55aa24fb SDJ |
12803 | /* Specific methods for probe breakpoints. */ |
12804 | ||
12805 | static int | |
12806 | bkpt_probe_insert_location (struct bp_location *bl) | |
12807 | { | |
12808 | int v = bkpt_insert_location (bl); | |
12809 | ||
12810 | if (v == 0) | |
12811 | { | |
12812 | /* The insertion was successful, now let's set the probe's semaphore | |
12813 | if needed. */ | |
935676c9 | 12814 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12815 | } |
12816 | ||
12817 | return v; | |
12818 | } | |
12819 | ||
12820 | static int | |
73971819 PA |
12821 | bkpt_probe_remove_location (struct bp_location *bl, |
12822 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12823 | { |
12824 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12825 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12826 | |
73971819 | 12827 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12828 | } |
12829 | ||
12830 | static void | |
626d2320 | 12831 | bkpt_probe_create_sals_from_location (struct event_location *location, |
5f700d83 | 12832 | struct linespec_result *canonical, |
f00aae0f | 12833 | enum bptype type_wanted) |
55aa24fb SDJ |
12834 | { |
12835 | struct linespec_sals lsal; | |
12836 | ||
c2f4122d | 12837 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12838 | lsal.canonical |
12839 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12840 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12841 | } |
12842 | ||
6c5b2ebe | 12843 | static std::vector<symtab_and_line> |
f00aae0f | 12844 | bkpt_probe_decode_location (struct breakpoint *b, |
626d2320 | 12845 | struct event_location *location, |
6c5b2ebe | 12846 | struct program_space *search_pspace) |
55aa24fb | 12847 | { |
6c5b2ebe PA |
12848 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12849 | if (sals.empty ()) | |
55aa24fb | 12850 | error (_("probe not found")); |
6c5b2ebe | 12851 | return sals; |
55aa24fb SDJ |
12852 | } |
12853 | ||
348d480f | 12854 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12855 | |
348d480f PA |
12856 | static void |
12857 | tracepoint_re_set (struct breakpoint *b) | |
12858 | { | |
12859 | breakpoint_re_set_default (b); | |
12860 | } | |
876fa593 | 12861 | |
348d480f PA |
12862 | static int |
12863 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12864 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12865 | const struct target_waitstatus *ws) |
348d480f PA |
12866 | { |
12867 | /* By definition, the inferior does not report stops at | |
12868 | tracepoints. */ | |
12869 | return 0; | |
74960c60 VP |
12870 | } |
12871 | ||
12872 | static void | |
348d480f PA |
12873 | tracepoint_print_one_detail (const struct breakpoint *self, |
12874 | struct ui_out *uiout) | |
74960c60 | 12875 | { |
d9b3f62e | 12876 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12877 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12878 | { |
12879 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12880 | |
6a831f06 PA |
12881 | uiout->message ("\tmarker id is %pF\n", |
12882 | string_field ("static-tracepoint-marker-string-id", | |
12883 | tp->static_trace_marker_id.c_str ())); | |
348d480f | 12884 | } |
0d381245 VP |
12885 | } |
12886 | ||
a474d7c2 | 12887 | static void |
348d480f | 12888 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12889 | { |
112e8700 | 12890 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12891 | return; |
cc59ec59 | 12892 | |
348d480f PA |
12893 | switch (b->type) |
12894 | { | |
12895 | case bp_tracepoint: | |
12896 | printf_filtered (_("Tracepoint")); | |
12897 | printf_filtered (_(" %d"), b->number); | |
12898 | break; | |
12899 | case bp_fast_tracepoint: | |
12900 | printf_filtered (_("Fast tracepoint")); | |
12901 | printf_filtered (_(" %d"), b->number); | |
12902 | break; | |
12903 | case bp_static_tracepoint: | |
12904 | printf_filtered (_("Static tracepoint")); | |
12905 | printf_filtered (_(" %d"), b->number); | |
12906 | break; | |
12907 | default: | |
12908 | internal_error (__FILE__, __LINE__, | |
12909 | _("unhandled tracepoint type %d"), (int) b->type); | |
12910 | } | |
12911 | ||
12912 | say_where (b); | |
a474d7c2 PA |
12913 | } |
12914 | ||
348d480f | 12915 | static void |
d9b3f62e | 12916 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12917 | { |
d9b3f62e PA |
12918 | struct tracepoint *tp = (struct tracepoint *) self; |
12919 | ||
12920 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12921 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12922 | else if (self->type == bp_static_tracepoint) |
348d480f | 12923 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12924 | else if (self->type == bp_tracepoint) |
348d480f PA |
12925 | fprintf_unfiltered (fp, "trace"); |
12926 | else | |
12927 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12928 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12929 | |
f00aae0f | 12930 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12931 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12932 | print_recreate_thread (self, fp); |
12933 | ||
12934 | if (tp->pass_count) | |
12935 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12936 | } |
12937 | ||
983af33b | 12938 | static void |
626d2320 | 12939 | tracepoint_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
12940 | struct linespec_result *canonical, |
12941 | enum bptype type_wanted) | |
983af33b | 12942 | { |
f00aae0f | 12943 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12944 | } |
12945 | ||
12946 | static void | |
12947 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12948 | struct linespec_result *canonical, | |
e1e01040 PA |
12949 | gdb::unique_xmalloc_ptr<char> cond_string, |
12950 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12951 | enum bptype type_wanted, |
12952 | enum bpdisp disposition, | |
12953 | int thread, | |
12954 | int task, int ignore_count, | |
12955 | const struct breakpoint_ops *ops, | |
12956 | int from_tty, int enabled, | |
44f238bb | 12957 | int internal, unsigned flags) |
983af33b | 12958 | { |
023fa29b | 12959 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12960 | std::move (cond_string), |
12961 | std::move (extra_string), | |
e7e0cddf | 12962 | type_wanted, |
983af33b SDJ |
12963 | disposition, thread, task, |
12964 | ignore_count, ops, from_tty, | |
44f238bb | 12965 | enabled, internal, flags); |
983af33b SDJ |
12966 | } |
12967 | ||
6c5b2ebe | 12968 | static std::vector<symtab_and_line> |
f00aae0f | 12969 | tracepoint_decode_location (struct breakpoint *b, |
626d2320 | 12970 | struct event_location *location, |
6c5b2ebe | 12971 | struct program_space *search_pspace) |
983af33b | 12972 | { |
6c5b2ebe | 12973 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12974 | } |
12975 | ||
2060206e | 12976 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12977 | |
bac7c5cf | 12978 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12979 | |
12980 | static void | |
f00aae0f | 12981 | tracepoint_probe_create_sals_from_location |
626d2320 | 12982 | (struct event_location *location, |
f00aae0f KS |
12983 | struct linespec_result *canonical, |
12984 | enum bptype type_wanted) | |
55aa24fb SDJ |
12985 | { |
12986 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12987 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12988 | } |
12989 | ||
6c5b2ebe | 12990 | static std::vector<symtab_and_line> |
f00aae0f | 12991 | tracepoint_probe_decode_location (struct breakpoint *b, |
626d2320 | 12992 | struct event_location *location, |
6c5b2ebe | 12993 | struct program_space *search_pspace) |
55aa24fb SDJ |
12994 | { |
12995 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12996 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12997 | } |
12998 | ||
5c2b4418 HZ |
12999 | /* Dprintf breakpoint_ops methods. */ |
13000 | ||
13001 | static void | |
13002 | dprintf_re_set (struct breakpoint *b) | |
13003 | { | |
13004 | breakpoint_re_set_default (b); | |
13005 | ||
f00aae0f KS |
13006 | /* extra_string should never be non-NULL for dprintf. */ |
13007 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13008 | |
13009 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13010 | 2 - create a dprintf, which resolves fine. | |
13011 | 3 - disconnect from target 1 | |
13012 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13013 | ||
13014 | After steps #3/#4, you'll want the dprintf command list to | |
13015 | be updated, because target 1 and 2 may well return different | |
13016 | answers for target_can_run_breakpoint_commands(). | |
13017 | Given absence of finer grained resetting, we get to do | |
13018 | it all the time. */ | |
13019 | if (b->extra_string != NULL) | |
13020 | update_dprintf_command_list (b); | |
13021 | } | |
13022 | ||
2d9442cc HZ |
13023 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13024 | ||
13025 | static void | |
13026 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13027 | { | |
f00aae0f | 13028 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13029 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13030 | tp->extra_string); |
13031 | print_recreate_thread (tp, fp); | |
13032 | } | |
13033 | ||
9d6e6e84 HZ |
13034 | /* Implement the "after_condition_true" breakpoint_ops method for |
13035 | dprintf. | |
13036 | ||
13037 | dprintf's are implemented with regular commands in their command | |
13038 | list, but we run the commands here instead of before presenting the | |
13039 | stop to the user, as dprintf's don't actually cause a stop. This | |
13040 | also makes it so that the commands of multiple dprintfs at the same | |
13041 | address are all handled. */ | |
13042 | ||
13043 | static void | |
13044 | dprintf_after_condition_true (struct bpstats *bs) | |
13045 | { | |
04afa70c | 13046 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13047 | struct bpstats *tmp_bs_p = &tmp_bs; |
13048 | ||
13049 | /* dprintf's never cause a stop. This wasn't set in the | |
13050 | check_status hook instead because that would make the dprintf's | |
13051 | condition not be evaluated. */ | |
13052 | bs->stop = 0; | |
13053 | ||
13054 | /* Run the command list here. Take ownership of it instead of | |
13055 | copying. We never want these commands to run later in | |
13056 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13057 | be set at same address as this dprintf, or even if running the | |
13058 | commands here throws. */ | |
13059 | tmp_bs.commands = bs->commands; | |
13060 | bs->commands = NULL; | |
9d6e6e84 HZ |
13061 | |
13062 | bpstat_do_actions_1 (&tmp_bs_p); | |
13063 | ||
13064 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13065 | bpstat_do_actions_1 may return early without processing the whole | |
13066 | list. */ | |
9d6e6e84 HZ |
13067 | } |
13068 | ||
983af33b SDJ |
13069 | /* The breakpoint_ops structure to be used on static tracepoints with |
13070 | markers (`-m'). */ | |
13071 | ||
13072 | static void | |
626d2320 | 13073 | strace_marker_create_sals_from_location (struct event_location *location, |
5f700d83 | 13074 | struct linespec_result *canonical, |
f00aae0f | 13075 | enum bptype type_wanted) |
983af33b SDJ |
13076 | { |
13077 | struct linespec_sals lsal; | |
f00aae0f | 13078 | const char *arg_start, *arg; |
983af33b | 13079 | |
a20714ff | 13080 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13081 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13082 | |
f2fc3015 TT |
13083 | std::string str (arg_start, arg - arg_start); |
13084 | const char *ptr = str.c_str (); | |
a20714ff PA |
13085 | canonical->location |
13086 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13087 | |
8e9e35b1 TT |
13088 | lsal.canonical |
13089 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13090 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13091 | } |
13092 | ||
13093 | static void | |
13094 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13095 | struct linespec_result *canonical, | |
e1e01040 PA |
13096 | gdb::unique_xmalloc_ptr<char> cond_string, |
13097 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13098 | enum bptype type_wanted, |
13099 | enum bpdisp disposition, | |
13100 | int thread, | |
13101 | int task, int ignore_count, | |
13102 | const struct breakpoint_ops *ops, | |
13103 | int from_tty, int enabled, | |
44f238bb | 13104 | int internal, unsigned flags) |
983af33b | 13105 | { |
6c5b2ebe | 13106 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13107 | |
13108 | /* If the user is creating a static tracepoint by marker id | |
13109 | (strace -m MARKER_ID), then store the sals index, so that | |
13110 | breakpoint_re_set can try to match up which of the newly | |
13111 | found markers corresponds to this one, and, don't try to | |
13112 | expand multiple locations for each sal, given than SALS | |
13113 | already should contain all sals for MARKER_ID. */ | |
13114 | ||
6c5b2ebe | 13115 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13116 | { |
6c5b2ebe PA |
13117 | event_location_up location |
13118 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13119 | |
b270e6f9 | 13120 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13121 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13122 | std::move (location), NULL, |
e1e01040 PA |
13123 | std::move (cond_string), |
13124 | std::move (extra_string), | |
e7e0cddf | 13125 | type_wanted, disposition, |
983af33b | 13126 | thread, task, ignore_count, ops, |
44f238bb | 13127 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13128 | canonical->special_display); |
13129 | /* Given that its possible to have multiple markers with | |
13130 | the same string id, if the user is creating a static | |
13131 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13132 | store the sals index, so that breakpoint_re_set can | |
13133 | try to match up which of the newly found markers | |
13134 | corresponds to this one */ | |
13135 | tp->static_trace_marker_id_idx = i; | |
13136 | ||
b270e6f9 | 13137 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13138 | } |
13139 | } | |
13140 | ||
6c5b2ebe | 13141 | static std::vector<symtab_and_line> |
f00aae0f | 13142 | strace_marker_decode_location (struct breakpoint *b, |
626d2320 | 13143 | struct event_location *location, |
6c5b2ebe | 13144 | struct program_space *search_pspace) |
983af33b SDJ |
13145 | { |
13146 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13147 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13148 | |
6c5b2ebe PA |
13149 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13150 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13151 | { |
6c5b2ebe PA |
13152 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13153 | sals.resize (1); | |
13154 | return sals; | |
983af33b SDJ |
13155 | } |
13156 | else | |
5d9310c4 | 13157 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13158 | } |
13159 | ||
13160 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13161 | ||
13162 | static int | |
13163 | strace_marker_p (struct breakpoint *b) | |
13164 | { | |
13165 | return b->ops == &strace_marker_breakpoint_ops; | |
13166 | } | |
13167 | ||
53a5351d | 13168 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13169 | structures. */ |
c906108c SS |
13170 | |
13171 | void | |
fba45db2 | 13172 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13173 | { |
8a3fe4f8 | 13174 | gdb_assert (bpt != NULL); |
c906108c | 13175 | |
4a64f543 MS |
13176 | /* Has this bp already been deleted? This can happen because |
13177 | multiple lists can hold pointers to bp's. bpstat lists are | |
13178 | especial culprits. | |
13179 | ||
13180 | One example of this happening is a watchpoint's scope bp. When | |
13181 | the scope bp triggers, we notice that the watchpoint is out of | |
13182 | scope, and delete it. We also delete its scope bp. But the | |
13183 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13184 | That bpstat is then checked for auto-deleting bp's, which are | |
13185 | deleted. | |
13186 | ||
13187 | A real solution to this problem might involve reference counts in | |
13188 | bp's, and/or giving them pointers back to their referencing | |
13189 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13190 | storage when no more references were extent. A cheaper bandaid | |
13191 | was chosen. */ | |
c906108c SS |
13192 | if (bpt->type == bp_none) |
13193 | return; | |
13194 | ||
4a64f543 MS |
13195 | /* At least avoid this stale reference until the reference counting |
13196 | of breakpoints gets resolved. */ | |
d0fb5eae | 13197 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13198 | { |
d0fb5eae | 13199 | struct breakpoint *related; |
3a5c3e22 | 13200 | struct watchpoint *w; |
d0fb5eae JK |
13201 | |
13202 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13203 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13204 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13205 | w = (struct watchpoint *) bpt; |
13206 | else | |
13207 | w = NULL; | |
13208 | if (w != NULL) | |
13209 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13210 | |
13211 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13212 | for (related = bpt; related->related_breakpoint != bpt; | |
13213 | related = related->related_breakpoint); | |
13214 | related->related_breakpoint = bpt->related_breakpoint; | |
13215 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13216 | } |
13217 | ||
a9634178 TJB |
13218 | /* watch_command_1 creates a watchpoint but only sets its number if |
13219 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13220 | a problem in that process, we'll be asked to delete the half-created | |
13221 | watchpoint. In that case, don't announce the deletion. */ | |
13222 | if (bpt->number) | |
76727919 | 13223 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13224 | |
c906108c SS |
13225 | if (breakpoint_chain == bpt) |
13226 | breakpoint_chain = bpt->next; | |
13227 | ||
43892fdf | 13228 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 13229 | if (b->next == bpt) |
01add95b SM |
13230 | { |
13231 | b->next = bpt->next; | |
13232 | break; | |
13233 | } | |
c906108c | 13234 | |
f431efe5 PA |
13235 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13236 | been freed. */ | |
13237 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13238 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13239 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13240 | commands are associated with the bpstat; if we remove it here, | |
13241 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13242 | event-top.c won't do anything, and temporary breakpoints with | |
13243 | commands won't work. */ | |
13244 | ||
13245 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13246 | ||
4a64f543 MS |
13247 | /* Now that breakpoint is removed from breakpoint list, update the |
13248 | global location list. This will remove locations that used to | |
13249 | belong to this breakpoint. Do this before freeing the breakpoint | |
13250 | itself, since remove_breakpoint looks at location's owner. It | |
13251 | might be better design to have location completely | |
13252 | self-contained, but it's not the case now. */ | |
44702360 | 13253 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13254 | |
4a64f543 MS |
13255 | /* On the chance that someone will soon try again to delete this |
13256 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13257 | bpt->type = bp_none; |
4d01a485 | 13258 | delete bpt; |
c906108c SS |
13259 | } |
13260 | ||
51be5b68 PA |
13261 | /* Iterator function to call a user-provided callback function once |
13262 | for each of B and its related breakpoints. */ | |
13263 | ||
13264 | static void | |
13265 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13266 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13267 | { |
13268 | struct breakpoint *related; | |
13269 | ||
13270 | related = b; | |
13271 | do | |
13272 | { | |
13273 | struct breakpoint *next; | |
13274 | ||
13275 | /* FUNCTION may delete RELATED. */ | |
13276 | next = related->related_breakpoint; | |
13277 | ||
13278 | if (next == related) | |
13279 | { | |
13280 | /* RELATED is the last ring entry. */ | |
48649e1b | 13281 | function (related); |
51be5b68 PA |
13282 | |
13283 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13284 | B. There's nothing left to do anyway, so just break | |
13285 | out. */ | |
13286 | break; | |
13287 | } | |
13288 | else | |
48649e1b | 13289 | function (related); |
51be5b68 PA |
13290 | |
13291 | related = next; | |
13292 | } | |
13293 | while (related != b); | |
13294 | } | |
95a42b64 | 13295 | |
4495129a | 13296 | static void |
981a3fb3 | 13297 | delete_command (const char *arg, int from_tty) |
c906108c | 13298 | { |
ea9365bb TT |
13299 | dont_repeat (); |
13300 | ||
c906108c SS |
13301 | if (arg == 0) |
13302 | { | |
13303 | int breaks_to_delete = 0; | |
13304 | ||
46c6471b | 13305 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
13306 | internal breakpoints, these have to be deleted with an |
13307 | explicit breakpoint number argument. */ | |
43892fdf | 13308 | for (breakpoint *b : all_breakpoints ()) |
46c6471b | 13309 | if (user_breakpoint_p (b)) |
973d738b DJ |
13310 | { |
13311 | breaks_to_delete = 1; | |
13312 | break; | |
13313 | } | |
c906108c SS |
13314 | |
13315 | /* Ask user only if there are some breakpoints to delete. */ | |
13316 | if (!from_tty | |
e2e0b3e5 | 13317 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
1428b37a SM |
13318 | for (breakpoint *b : all_breakpoints_safe ()) |
13319 | if (user_breakpoint_p (b)) | |
13320 | delete_breakpoint (b); | |
c906108c SS |
13321 | } |
13322 | else | |
48649e1b | 13323 | map_breakpoint_numbers |
b926417a | 13324 | (arg, [&] (breakpoint *br) |
48649e1b | 13325 | { |
b926417a | 13326 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13327 | }); |
c906108c SS |
13328 | } |
13329 | ||
c2f4122d PA |
13330 | /* Return true if all locations of B bound to PSPACE are pending. If |
13331 | PSPACE is NULL, all locations of all program spaces are | |
13332 | considered. */ | |
13333 | ||
0d381245 | 13334 | static int |
c2f4122d | 13335 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13336 | { |
40cb8ca5 | 13337 | for (bp_location *loc : b->locations ()) |
c2f4122d PA |
13338 | if ((pspace == NULL |
13339 | || loc->pspace == pspace) | |
13340 | && !loc->shlib_disabled | |
8645ff69 | 13341 | && !loc->pspace->executing_startup) |
0d381245 VP |
13342 | return 0; |
13343 | return 1; | |
fe3f5fa8 VP |
13344 | } |
13345 | ||
776592bf DE |
13346 | /* Subroutine of update_breakpoint_locations to simplify it. |
13347 | Return non-zero if multiple fns in list LOC have the same name. | |
13348 | Null names are ignored. */ | |
13349 | ||
13350 | static int | |
13351 | ambiguous_names_p (struct bp_location *loc) | |
13352 | { | |
13353 | struct bp_location *l; | |
2698f5ea | 13354 | htab_up htab (htab_create_alloc (13, htab_hash_string, htab_eq_string, NULL, |
c1fb9836 | 13355 | xcalloc, xfree)); |
776592bf DE |
13356 | |
13357 | for (l = loc; l != NULL; l = l->next) | |
13358 | { | |
13359 | const char **slot; | |
13360 | const char *name = l->function_name; | |
13361 | ||
13362 | /* Allow for some names to be NULL, ignore them. */ | |
13363 | if (name == NULL) | |
13364 | continue; | |
13365 | ||
c1fb9836 | 13366 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 13367 | INSERT); |
4a64f543 MS |
13368 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13369 | returns NULL. */ | |
776592bf | 13370 | if (*slot != NULL) |
c1fb9836 | 13371 | return 1; |
776592bf DE |
13372 | *slot = name; |
13373 | } | |
13374 | ||
776592bf DE |
13375 | return 0; |
13376 | } | |
13377 | ||
0fb4aa4b PA |
13378 | /* When symbols change, it probably means the sources changed as well, |
13379 | and it might mean the static tracepoint markers are no longer at | |
13380 | the same address or line numbers they used to be at last we | |
13381 | checked. Losing your static tracepoints whenever you rebuild is | |
13382 | undesirable. This function tries to resync/rematch gdb static | |
13383 | tracepoints with the markers on the target, for static tracepoints | |
13384 | that have not been set by marker id. Static tracepoint that have | |
13385 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13386 | The heuristic is: | |
13387 | ||
13388 | 1) For a tracepoint set at a specific address, look for a marker at | |
13389 | the old PC. If one is found there, assume to be the same marker. | |
13390 | If the name / string id of the marker found is different from the | |
13391 | previous known name, assume that means the user renamed the marker | |
13392 | in the sources, and output a warning. | |
13393 | ||
13394 | 2) For a tracepoint set at a given line number, look for a marker | |
13395 | at the new address of the old line number. If one is found there, | |
13396 | assume to be the same marker. If the name / string id of the | |
13397 | marker found is different from the previous known name, assume that | |
13398 | means the user renamed the marker in the sources, and output a | |
13399 | warning. | |
13400 | ||
13401 | 3) If a marker is no longer found at the same address or line, it | |
13402 | may mean the marker no longer exists. But it may also just mean | |
13403 | the code changed a bit. Maybe the user added a few lines of code | |
13404 | that made the marker move up or down (in line number terms). Ask | |
13405 | the target for info about the marker with the string id as we knew | |
13406 | it. If found, update line number and address in the matching | |
13407 | static tracepoint. This will get confused if there's more than one | |
13408 | marker with the same ID (possible in UST, although unadvised | |
13409 | precisely because it confuses tools). */ | |
13410 | ||
13411 | static struct symtab_and_line | |
13412 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13413 | { | |
d9b3f62e | 13414 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13415 | struct static_tracepoint_marker marker; |
13416 | CORE_ADDR pc; | |
0fb4aa4b PA |
13417 | |
13418 | pc = sal.pc; | |
13419 | if (sal.line) | |
13420 | find_line_pc (sal.symtab, sal.line, &pc); | |
13421 | ||
13422 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13423 | { | |
5d9310c4 | 13424 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13425 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13426 | b->number, tp->static_trace_marker_id.c_str (), |
13427 | marker.str_id.c_str ()); | |
0fb4aa4b | 13428 | |
5d9310c4 | 13429 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13430 | |
13431 | return sal; | |
13432 | } | |
13433 | ||
13434 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13435 | by string ID. */ | |
13436 | if (!sal.explicit_pc | |
13437 | && sal.line != 0 | |
13438 | && sal.symtab != NULL | |
5d9310c4 | 13439 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13440 | { |
5d9310c4 SM |
13441 | std::vector<static_tracepoint_marker> markers |
13442 | = target_static_tracepoint_markers_by_strid | |
13443 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13444 | |
5d9310c4 | 13445 | if (!markers.empty ()) |
0fb4aa4b | 13446 | { |
0fb4aa4b | 13447 | struct symbol *sym; |
80e1d417 | 13448 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13449 | struct ui_out *uiout = current_uiout; |
67994074 | 13450 | struct explicit_location explicit_loc; |
0fb4aa4b | 13451 | |
5d9310c4 | 13452 | tpmarker = &markers[0]; |
0fb4aa4b | 13453 | |
5d9310c4 | 13454 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13455 | |
13456 | warning (_("marker for static tracepoint %d (%s) not " | |
13457 | "found at previous line number"), | |
5d9310c4 | 13458 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13459 | |
51abb421 | 13460 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13461 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13462 | uiout->text ("Now in "); |
0fb4aa4b PA |
13463 | if (sym) |
13464 | { | |
987012b8 | 13465 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 13466 | function_name_style.style ()); |
112e8700 | 13467 | uiout->text (" at "); |
0fb4aa4b | 13468 | } |
112e8700 | 13469 | uiout->field_string ("file", |
cbe56571 | 13470 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 13471 | file_name_style.style ()); |
112e8700 | 13472 | uiout->text (":"); |
0fb4aa4b | 13473 | |
112e8700 | 13474 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13475 | { |
0b0865da | 13476 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13477 | |
112e8700 | 13478 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13479 | } |
13480 | ||
381befee | 13481 | uiout->field_signed ("line", sal2.line); |
112e8700 | 13482 | uiout->text ("\n"); |
0fb4aa4b | 13483 | |
80e1d417 | 13484 | b->loc->line_number = sal2.line; |
2f202fde | 13485 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13486 | |
d28cd78a | 13487 | b->location.reset (NULL); |
67994074 KS |
13488 | initialize_explicit_location (&explicit_loc); |
13489 | explicit_loc.source_filename | |
00e52e53 | 13490 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13491 | explicit_loc.line_offset.offset = b->loc->line_number; |
13492 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13493 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13494 | |
13495 | /* Might be nice to check if function changed, and warn if | |
13496 | so. */ | |
0fb4aa4b PA |
13497 | } |
13498 | } | |
13499 | return sal; | |
13500 | } | |
13501 | ||
8d3788bd VP |
13502 | /* Returns 1 iff locations A and B are sufficiently same that |
13503 | we don't need to report breakpoint as changed. */ | |
13504 | ||
13505 | static int | |
13506 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13507 | { | |
13508 | while (a && b) | |
13509 | { | |
13510 | if (a->address != b->address) | |
13511 | return 0; | |
13512 | ||
13513 | if (a->shlib_disabled != b->shlib_disabled) | |
13514 | return 0; | |
13515 | ||
13516 | if (a->enabled != b->enabled) | |
13517 | return 0; | |
13518 | ||
b5fa468f TBA |
13519 | if (a->disabled_by_cond != b->disabled_by_cond) |
13520 | return 0; | |
13521 | ||
8d3788bd VP |
13522 | a = a->next; |
13523 | b = b->next; | |
13524 | } | |
13525 | ||
13526 | if ((a == NULL) != (b == NULL)) | |
13527 | return 0; | |
13528 | ||
13529 | return 1; | |
13530 | } | |
13531 | ||
c2f4122d PA |
13532 | /* Split all locations of B that are bound to PSPACE out of B's |
13533 | location list to a separate list and return that list's head. If | |
13534 | PSPACE is NULL, hoist out all locations of B. */ | |
13535 | ||
13536 | static struct bp_location * | |
13537 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13538 | { | |
13539 | struct bp_location head; | |
13540 | struct bp_location *i = b->loc; | |
13541 | struct bp_location **i_link = &b->loc; | |
13542 | struct bp_location *hoisted = &head; | |
13543 | ||
13544 | if (pspace == NULL) | |
13545 | { | |
13546 | i = b->loc; | |
13547 | b->loc = NULL; | |
13548 | return i; | |
13549 | } | |
13550 | ||
13551 | head.next = NULL; | |
13552 | ||
13553 | while (i != NULL) | |
13554 | { | |
13555 | if (i->pspace == pspace) | |
13556 | { | |
13557 | *i_link = i->next; | |
13558 | i->next = NULL; | |
13559 | hoisted->next = i; | |
13560 | hoisted = i; | |
13561 | } | |
13562 | else | |
13563 | i_link = &i->next; | |
13564 | i = *i_link; | |
13565 | } | |
13566 | ||
13567 | return head.next; | |
13568 | } | |
13569 | ||
13570 | /* Create new breakpoint locations for B (a hardware or software | |
13571 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13572 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13573 | FILTER_PSPACE. Locations of other program spaces are left | |
13574 | untouched. */ | |
f1310107 | 13575 | |
0e30163f | 13576 | void |
0d381245 | 13577 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13578 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13579 | gdb::array_view<const symtab_and_line> sals, |
13580 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13581 | { |
c2f4122d | 13582 | struct bp_location *existing_locations; |
0d381245 | 13583 | |
6c5b2ebe | 13584 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13585 | { |
13586 | /* Ranged breakpoints have only one start location and one end | |
13587 | location. */ | |
13588 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13589 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13590 | "multiple locations found\n"), | |
13591 | b->number); | |
13592 | return; | |
13593 | } | |
f1310107 | 13594 | |
4a64f543 MS |
13595 | /* If there's no new locations, and all existing locations are |
13596 | pending, don't do anything. This optimizes the common case where | |
13597 | all locations are in the same shared library, that was unloaded. | |
13598 | We'd like to retain the location, so that when the library is | |
13599 | loaded again, we don't loose the enabled/disabled status of the | |
13600 | individual locations. */ | |
6c5b2ebe | 13601 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13602 | return; |
13603 | ||
c2f4122d | 13604 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13605 | |
6c5b2ebe | 13606 | for (const auto &sal : sals) |
fe3f5fa8 | 13607 | { |
f8eba3c6 TT |
13608 | struct bp_location *new_loc; |
13609 | ||
6c5b2ebe | 13610 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13611 | |
6c5b2ebe | 13612 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13613 | |
0d381245 VP |
13614 | /* Reparse conditions, they might contain references to the |
13615 | old symtab. */ | |
13616 | if (b->cond_string != NULL) | |
13617 | { | |
bbc13ae3 | 13618 | const char *s; |
fe3f5fa8 | 13619 | |
0d381245 | 13620 | s = b->cond_string; |
a70b8144 | 13621 | try |
0d381245 | 13622 | { |
6c5b2ebe PA |
13623 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13624 | block_for_pc (sal.pc), | |
0d381245 VP |
13625 | 0); |
13626 | } | |
230d2906 | 13627 | catch (const gdb_exception_error &e) |
0d381245 | 13628 | { |
b5fa468f | 13629 | new_loc->disabled_by_cond = true; |
0d381245 VP |
13630 | } |
13631 | } | |
fe3f5fa8 | 13632 | |
6c5b2ebe | 13633 | if (!sals_end.empty ()) |
f1310107 | 13634 | { |
6c5b2ebe | 13635 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13636 | |
6c5b2ebe | 13637 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13638 | } |
0d381245 | 13639 | } |
fe3f5fa8 | 13640 | |
4a64f543 MS |
13641 | /* If possible, carry over 'disable' status from existing |
13642 | breakpoints. */ | |
0d381245 VP |
13643 | { |
13644 | struct bp_location *e = existing_locations; | |
776592bf DE |
13645 | /* If there are multiple breakpoints with the same function name, |
13646 | e.g. for inline functions, comparing function names won't work. | |
13647 | Instead compare pc addresses; this is just a heuristic as things | |
13648 | may have moved, but in practice it gives the correct answer | |
13649 | often enough until a better solution is found. */ | |
13650 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13651 | ||
0d381245 VP |
13652 | for (; e; e = e->next) |
13653 | { | |
b5fa468f | 13654 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 | 13655 | { |
776592bf DE |
13656 | if (have_ambiguous_names) |
13657 | { | |
40cb8ca5 | 13658 | for (bp_location *l : b->locations ()) |
7f32a4d5 PA |
13659 | { |
13660 | /* Ignore software vs hardware location type at | |
13661 | this point, because with "set breakpoint | |
13662 | auto-hw", after a re-set, locations that were | |
13663 | hardware can end up as software, or vice versa. | |
13664 | As mentioned above, this is an heuristic and in | |
13665 | practice should give the correct answer often | |
13666 | enough. */ | |
13667 | if (breakpoint_locations_match (e, l, true)) | |
13668 | { | |
b5fa468f TBA |
13669 | l->enabled = e->enabled; |
13670 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
13671 | break; |
13672 | } | |
13673 | } | |
776592bf DE |
13674 | } |
13675 | else | |
13676 | { | |
40cb8ca5 | 13677 | for (bp_location *l : b->locations ()) |
776592bf DE |
13678 | if (l->function_name |
13679 | && strcmp (e->function_name, l->function_name) == 0) | |
13680 | { | |
b5fa468f TBA |
13681 | l->enabled = e->enabled; |
13682 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
13683 | break; |
13684 | } | |
13685 | } | |
0d381245 VP |
13686 | } |
13687 | } | |
13688 | } | |
fe3f5fa8 | 13689 | |
8d3788bd | 13690 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13691 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13692 | } |
13693 | ||
f00aae0f | 13694 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13695 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13696 | ||
6c5b2ebe | 13697 | static std::vector<symtab_and_line> |
f00aae0f | 13698 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13699 | struct program_space *search_pspace, int *found) |
ef23e705 | 13700 | { |
cc06b668 | 13701 | struct gdb_exception exception; |
ef23e705 | 13702 | |
983af33b | 13703 | gdb_assert (b->ops != NULL); |
ef23e705 | 13704 | |
6c5b2ebe PA |
13705 | std::vector<symtab_and_line> sals; |
13706 | ||
a70b8144 | 13707 | try |
ef23e705 | 13708 | { |
6c5b2ebe | 13709 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13710 | } |
94aeb44b | 13711 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13712 | { |
13713 | int not_found_and_ok = 0; | |
492d29ea | 13714 | |
ef23e705 TJB |
13715 | /* For pending breakpoints, it's expected that parsing will |
13716 | fail until the right shared library is loaded. User has | |
13717 | already told to create pending breakpoints and don't need | |
13718 | extra messages. If breakpoint is in bp_shlib_disabled | |
13719 | state, then user already saw the message about that | |
13720 | breakpoint being disabled, and don't want to see more | |
13721 | errors. */ | |
58438ac1 | 13722 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13723 | && (b->condition_not_parsed |
13724 | || (b->loc != NULL | |
13725 | && search_pspace != NULL | |
13726 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13727 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13728 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13729 | || b->enable_state == bp_disabled)) |
13730 | not_found_and_ok = 1; | |
13731 | ||
13732 | if (!not_found_and_ok) | |
13733 | { | |
13734 | /* We surely don't want to warn about the same breakpoint | |
13735 | 10 times. One solution, implemented here, is disable | |
13736 | the breakpoint on error. Another solution would be to | |
13737 | have separate 'warning emitted' flag. Since this | |
13738 | happens only when a binary has changed, I don't know | |
13739 | which approach is better. */ | |
13740 | b->enable_state = bp_disabled; | |
eedc3f4f | 13741 | throw; |
ef23e705 | 13742 | } |
94aeb44b TT |
13743 | |
13744 | exception = std::move (e); | |
ef23e705 TJB |
13745 | } |
13746 | ||
492d29ea | 13747 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13748 | { |
6c5b2ebe PA |
13749 | for (auto &sal : sals) |
13750 | resolve_sal_pc (&sal); | |
f00aae0f | 13751 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13752 | { |
ed1d1739 KS |
13753 | char *cond_string, *extra_string; |
13754 | int thread, task; | |
ef23e705 | 13755 | |
b5fa468f TBA |
13756 | find_condition_and_thread_for_sals (sals, b->extra_string, |
13757 | &cond_string, &thread, | |
13758 | &task, &extra_string); | |
f00aae0f | 13759 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13760 | if (cond_string) |
13761 | b->cond_string = cond_string; | |
13762 | b->thread = thread; | |
13763 | b->task = task; | |
e7e0cddf | 13764 | if (extra_string) |
f00aae0f KS |
13765 | { |
13766 | xfree (b->extra_string); | |
13767 | b->extra_string = extra_string; | |
13768 | } | |
ef23e705 TJB |
13769 | b->condition_not_parsed = 0; |
13770 | } | |
13771 | ||
983af33b | 13772 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13773 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13774 | |
58438ac1 TT |
13775 | *found = 1; |
13776 | } | |
13777 | else | |
13778 | *found = 0; | |
ef23e705 TJB |
13779 | |
13780 | return sals; | |
13781 | } | |
13782 | ||
348d480f PA |
13783 | /* The default re_set method, for typical hardware or software |
13784 | breakpoints. Reevaluate the breakpoint and recreate its | |
13785 | locations. */ | |
13786 | ||
13787 | static void | |
28010a5d | 13788 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13789 | { |
c2f4122d | 13790 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13791 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13792 | |
6c5b2ebe PA |
13793 | int found; |
13794 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13795 | filter_pspace, &found); | |
ef23e705 | 13796 | if (found) |
6c5b2ebe | 13797 | expanded = std::move (sals); |
ef23e705 | 13798 | |
f00aae0f | 13799 | if (b->location_range_end != NULL) |
f1310107 | 13800 | { |
6c5b2ebe PA |
13801 | std::vector<symtab_and_line> sals_end |
13802 | = location_to_sals (b, b->location_range_end.get (), | |
13803 | filter_pspace, &found); | |
f1310107 | 13804 | if (found) |
6c5b2ebe | 13805 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13806 | } |
13807 | ||
c2f4122d | 13808 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13809 | } |
13810 | ||
983af33b SDJ |
13811 | /* Default method for creating SALs from an address string. It basically |
13812 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13813 | ||
13814 | static void | |
626d2320 | 13815 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
13816 | struct linespec_result *canonical, |
13817 | enum bptype type_wanted) | |
983af33b | 13818 | { |
f00aae0f | 13819 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13820 | } |
13821 | ||
13822 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13823 | function for the `create_breakpoints_sal' method of | |
13824 | breakpoint_ops. */ | |
13825 | ||
13826 | static void | |
13827 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13828 | struct linespec_result *canonical, | |
e1e01040 PA |
13829 | gdb::unique_xmalloc_ptr<char> cond_string, |
13830 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13831 | enum bptype type_wanted, |
13832 | enum bpdisp disposition, | |
13833 | int thread, | |
13834 | int task, int ignore_count, | |
13835 | const struct breakpoint_ops *ops, | |
13836 | int from_tty, int enabled, | |
44f238bb | 13837 | int internal, unsigned flags) |
983af33b | 13838 | { |
e1e01040 PA |
13839 | create_breakpoints_sal (gdbarch, canonical, |
13840 | std::move (cond_string), | |
13841 | std::move (extra_string), | |
983af33b SDJ |
13842 | type_wanted, disposition, |
13843 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13844 | enabled, internal, flags); |
983af33b SDJ |
13845 | } |
13846 | ||
13847 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13848 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13849 | |
6c5b2ebe | 13850 | static std::vector<symtab_and_line> |
f00aae0f | 13851 | decode_location_default (struct breakpoint *b, |
626d2320 | 13852 | struct event_location *location, |
6c5b2ebe | 13853 | struct program_space *search_pspace) |
983af33b SDJ |
13854 | { |
13855 | struct linespec_result canonical; | |
13856 | ||
c2f4122d | 13857 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13858 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 13859 | b->filter.get ()); |
983af33b SDJ |
13860 | |
13861 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13862 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13863 | |
6c5b2ebe | 13864 | if (!canonical.lsals.empty ()) |
983af33b | 13865 | { |
6c5b2ebe PA |
13866 | const linespec_sals &lsal = canonical.lsals[0]; |
13867 | return std::move (lsal.sals); | |
983af33b | 13868 | } |
6c5b2ebe | 13869 | return {}; |
983af33b SDJ |
13870 | } |
13871 | ||
bf469271 | 13872 | /* Reset a breakpoint. */ |
c906108c | 13873 | |
bf469271 PA |
13874 | static void |
13875 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13876 | { |
fdf44873 TT |
13877 | input_radix = b->input_radix; |
13878 | set_language (b->language); | |
c906108c | 13879 | |
348d480f | 13880 | b->ops->re_set (b); |
c906108c SS |
13881 | } |
13882 | ||
c2f4122d PA |
13883 | /* Re-set breakpoint locations for the current program space. |
13884 | Locations bound to other program spaces are left untouched. */ | |
13885 | ||
c906108c | 13886 | void |
69de3c6a | 13887 | breakpoint_re_set (void) |
c906108c | 13888 | { |
c5aa993b | 13889 | { |
fdf44873 TT |
13890 | scoped_restore_current_language save_language; |
13891 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13892 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13893 | |
8e817061 JB |
13894 | /* breakpoint_re_set_one sets the current_language to the language |
13895 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13896 | before re-evaluating the breakpoint's location. This change can | |
13897 | unfortunately get undone by accident if the language_mode is set | |
13898 | to auto, and we either switch frames, or more likely in this context, | |
13899 | we select the current frame. | |
13900 | ||
13901 | We prevent this by temporarily turning the language_mode to | |
13902 | language_mode_manual. We restore it once all breakpoints | |
13903 | have been reset. */ | |
13904 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13905 | language_mode = language_mode_manual; | |
13906 | ||
5ed8105e PA |
13907 | /* Note: we must not try to insert locations until after all |
13908 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13909 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13910 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13911 | |
1428b37a | 13912 | for (breakpoint *b : all_breakpoints_safe ()) |
5ed8105e | 13913 | { |
a70b8144 | 13914 | try |
bf469271 PA |
13915 | { |
13916 | breakpoint_re_set_one (b); | |
13917 | } | |
230d2906 | 13918 | catch (const gdb_exception &ex) |
bf469271 PA |
13919 | { |
13920 | exception_fprintf (gdb_stderr, ex, | |
13921 | "Error in re-setting breakpoint %d: ", | |
13922 | b->number); | |
13923 | } | |
5ed8105e | 13924 | } |
5ed8105e PA |
13925 | |
13926 | jit_breakpoint_re_set (); | |
13927 | } | |
6c95b8df | 13928 | |
af02033e PP |
13929 | create_overlay_event_breakpoint (); |
13930 | create_longjmp_master_breakpoint (); | |
13931 | create_std_terminate_master_breakpoint (); | |
186c406b | 13932 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13933 | |
13934 | /* Now we can insert. */ | |
13935 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13936 | } |
13937 | \f | |
c906108c SS |
13938 | /* Reset the thread number of this breakpoint: |
13939 | ||
13940 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13941 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13942 | void |
fba45db2 | 13943 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13944 | { |
13945 | if (b->thread != -1) | |
13946 | { | |
00431a78 | 13947 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13948 | |
13949 | /* We're being called after following a fork. The new fork is | |
13950 | selected as current, and unless this was a vfork will have a | |
13951 | different program space from the original thread. Reset that | |
13952 | as well. */ | |
13953 | b->loc->pspace = current_program_space; | |
c906108c SS |
13954 | } |
13955 | } | |
13956 | ||
03ac34d5 MS |
13957 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13958 | If from_tty is nonzero, it prints a message to that effect, | |
13959 | which ends with a period (no newline). */ | |
13960 | ||
c906108c | 13961 | void |
fba45db2 | 13962 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13963 | { |
c906108c SS |
13964 | if (count < 0) |
13965 | count = 0; | |
13966 | ||
43892fdf | 13967 | for (breakpoint *b : all_breakpoints ()) |
c906108c | 13968 | if (b->number == bptnum) |
01add95b SM |
13969 | { |
13970 | if (is_tracepoint (b)) | |
13971 | { | |
13972 | if (from_tty && count != 0) | |
13973 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13974 | bptnum); | |
13975 | return; | |
13976 | } | |
13977 | ||
13978 | b->ignore_count = count; | |
13979 | if (from_tty) | |
13980 | { | |
13981 | if (count == 0) | |
13982 | printf_filtered (_("Will stop next time " | |
13983 | "breakpoint %d is reached."), | |
13984 | bptnum); | |
13985 | else if (count == 1) | |
13986 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), | |
13987 | bptnum); | |
13988 | else | |
13989 | printf_filtered (_("Will ignore next %d " | |
13990 | "crossings of breakpoint %d."), | |
13991 | count, bptnum); | |
13992 | } | |
13993 | gdb::observers::breakpoint_modified.notify (b); | |
13994 | return; | |
13995 | } | |
c906108c | 13996 | |
8a3fe4f8 | 13997 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13998 | } |
13999 | ||
c906108c SS |
14000 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14001 | ||
14002 | static void | |
0b39b52e | 14003 | ignore_command (const char *args, int from_tty) |
c906108c | 14004 | { |
0b39b52e | 14005 | const char *p = args; |
52f0bd74 | 14006 | int num; |
c906108c SS |
14007 | |
14008 | if (p == 0) | |
e2e0b3e5 | 14009 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14010 | |
c906108c | 14011 | num = get_number (&p); |
5c44784c | 14012 | if (num == 0) |
8a3fe4f8 | 14013 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14014 | if (*p == 0) |
8a3fe4f8 | 14015 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14016 | |
14017 | set_ignore_count (num, | |
14018 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14019 | from_tty); | |
221ea385 KS |
14020 | if (from_tty) |
14021 | printf_filtered ("\n"); | |
c906108c SS |
14022 | } |
14023 | \f | |
d0fe4701 XR |
14024 | |
14025 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14026 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14027 | |
14028 | static void | |
d0fe4701 XR |
14029 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14030 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14031 | { |
d0fe4701 XR |
14032 | if (bp_num_range.first == 0) |
14033 | { | |
14034 | warning (_("bad breakpoint number at or near '%d'"), | |
14035 | bp_num_range.first); | |
14036 | } | |
14037 | else | |
c906108c | 14038 | { |
d0fe4701 | 14039 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14040 | { |
d0fe4701 XR |
14041 | bool match = false; |
14042 | ||
1428b37a | 14043 | for (breakpoint *b : all_breakpoints_safe ()) |
d0fe4701 | 14044 | if (b->number == i) |
5c44784c | 14045 | { |
bfd28288 | 14046 | match = true; |
48649e1b | 14047 | function (b); |
11cf8741 | 14048 | break; |
5c44784c | 14049 | } |
bfd28288 | 14050 | if (!match) |
d0fe4701 | 14051 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14052 | } |
c906108c SS |
14053 | } |
14054 | } | |
14055 | ||
d0fe4701 XR |
14056 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14057 | ARGS. */ | |
14058 | ||
14059 | static void | |
14060 | map_breakpoint_numbers (const char *args, | |
14061 | gdb::function_view<void (breakpoint *)> function) | |
14062 | { | |
14063 | if (args == NULL || *args == '\0') | |
14064 | error_no_arg (_("one or more breakpoint numbers")); | |
14065 | ||
14066 | number_or_range_parser parser (args); | |
14067 | ||
14068 | while (!parser.finished ()) | |
14069 | { | |
14070 | int num = parser.get_number (); | |
14071 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14072 | } | |
14073 | } | |
14074 | ||
14075 | /* Return the breakpoint location structure corresponding to the | |
14076 | BP_NUM and LOC_NUM values. */ | |
14077 | ||
0d381245 | 14078 | static struct bp_location * |
d0fe4701 | 14079 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14080 | { |
43892fdf | 14081 | breakpoint *b = get_breakpoint (bp_num); |
0d381245 VP |
14082 | |
14083 | if (!b || b->number != bp_num) | |
d0fe4701 | 14084 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14085 | |
0d381245 | 14086 | if (loc_num == 0) |
d0fe4701 | 14087 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14088 | |
d0fe4701 | 14089 | int n = 0; |
40cb8ca5 | 14090 | for (bp_location *loc : b->locations ()) |
d0fe4701 XR |
14091 | if (++n == loc_num) |
14092 | return loc; | |
14093 | ||
14094 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14095 | } |
14096 | ||
95e95a6d PA |
14097 | /* Modes of operation for extract_bp_num. */ |
14098 | enum class extract_bp_kind | |
14099 | { | |
14100 | /* Extracting a breakpoint number. */ | |
14101 | bp, | |
14102 | ||
14103 | /* Extracting a location number. */ | |
14104 | loc, | |
14105 | }; | |
14106 | ||
14107 | /* Extract a breakpoint or location number (as determined by KIND) | |
14108 | from the string starting at START. TRAILER is a character which | |
14109 | can be found after the number. If you don't want a trailer, use | |
14110 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14111 | string. This always returns a positive integer. */ | |
14112 | ||
14113 | static int | |
14114 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14115 | int trailer, const char **end_out = NULL) | |
14116 | { | |
14117 | const char *end = start; | |
14118 | int num = get_number_trailer (&end, trailer); | |
14119 | if (num < 0) | |
14120 | error (kind == extract_bp_kind::bp | |
14121 | ? _("Negative breakpoint number '%.*s'") | |
14122 | : _("Negative breakpoint location number '%.*s'"), | |
14123 | int (end - start), start); | |
14124 | if (num == 0) | |
14125 | error (kind == extract_bp_kind::bp | |
14126 | ? _("Bad breakpoint number '%.*s'") | |
14127 | : _("Bad breakpoint location number '%.*s'"), | |
14128 | int (end - start), start); | |
14129 | ||
14130 | if (end_out != NULL) | |
14131 | *end_out = end; | |
14132 | return num; | |
14133 | } | |
14134 | ||
14135 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14136 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14137 | representing the (inclusive) range. The returned pair's elements | |
14138 | are always positive integers. */ | |
14139 | ||
14140 | static std::pair<int, int> | |
14141 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14142 | const std::string &arg, | |
14143 | std::string::size_type arg_offset) | |
14144 | { | |
14145 | std::pair<int, int> range; | |
14146 | const char *bp_loc = &arg[arg_offset]; | |
14147 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14148 | if (dash != std::string::npos) | |
14149 | { | |
14150 | /* bp_loc is a range (x-z). */ | |
14151 | if (arg.length () == dash + 1) | |
14152 | error (kind == extract_bp_kind::bp | |
14153 | ? _("Bad breakpoint number at or near: '%s'") | |
14154 | : _("Bad breakpoint location number at or near: '%s'"), | |
14155 | bp_loc); | |
14156 | ||
14157 | const char *end; | |
14158 | const char *start_first = bp_loc; | |
14159 | const char *start_second = &arg[dash + 1]; | |
14160 | range.first = extract_bp_num (kind, start_first, '-'); | |
14161 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14162 | ||
14163 | if (range.first > range.second) | |
14164 | error (kind == extract_bp_kind::bp | |
14165 | ? _("Inverted breakpoint range at '%.*s'") | |
14166 | : _("Inverted breakpoint location range at '%.*s'"), | |
14167 | int (end - start_first), start_first); | |
14168 | } | |
14169 | else | |
14170 | { | |
14171 | /* bp_loc is a single value. */ | |
14172 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14173 | range.second = range.first; | |
14174 | } | |
14175 | return range; | |
14176 | } | |
14177 | ||
d0fe4701 XR |
14178 | /* Extract the breakpoint/location range specified by ARG. Returns |
14179 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14180 | BP_LOC_RANGE. | |
14181 | ||
14182 | ARG may be in any of the following forms: | |
14183 | ||
14184 | x where 'x' is a breakpoint number. | |
14185 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14186 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14187 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14188 | location number range. | |
14189 | */ | |
14190 | ||
cc638e86 | 14191 | static void |
d0fe4701 XR |
14192 | extract_bp_number_and_location (const std::string &arg, |
14193 | std::pair<int, int> &bp_num_range, | |
14194 | std::pair<int, int> &bp_loc_range) | |
14195 | { | |
14196 | std::string::size_type dot = arg.find ('.'); | |
14197 | ||
14198 | if (dot != std::string::npos) | |
14199 | { | |
14200 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14201 | ||
14202 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14203 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14204 | |
95e95a6d PA |
14205 | bp_num_range.first |
14206 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14207 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14208 | |
95e95a6d PA |
14209 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14210 | arg, dot + 1); | |
d0fe4701 XR |
14211 | } |
14212 | else | |
14213 | { | |
14214 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14215 | |
95e95a6d | 14216 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14217 | bp_loc_range.first = 0; |
14218 | bp_loc_range.second = 0; | |
14219 | } | |
d0fe4701 XR |
14220 | } |
14221 | ||
14222 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14223 | specifies whether to enable or disable. */ | |
14224 | ||
14225 | static void | |
14226 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14227 | { | |
14228 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14229 | if (loc != NULL) | |
14230 | { | |
b5fa468f TBA |
14231 | if (loc->disabled_by_cond && enable) |
14232 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
14233 | "cannot enable."), bp_num, loc_num); | |
14234 | ||
d0fe4701 XR |
14235 | if (loc->enabled != enable) |
14236 | { | |
14237 | loc->enabled = enable; | |
14238 | mark_breakpoint_location_modified (loc); | |
14239 | } | |
14240 | if (target_supports_enable_disable_tracepoint () | |
14241 | && current_trace_status ()->running && loc->owner | |
14242 | && is_tracepoint (loc->owner)) | |
14243 | target_disable_tracepoint (loc); | |
14244 | } | |
14245 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14246 | |
14247 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14248 | } |
14249 | ||
14250 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14251 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14252 | (inclusive) range of location numbers of that breakpoint to | |
14253 | enable/disable. ENABLE specifies whether to enable or disable the | |
14254 | location. */ | |
14255 | ||
14256 | static void | |
14257 | enable_disable_breakpoint_location_range (int bp_num, | |
14258 | std::pair<int, int> &bp_loc_range, | |
14259 | bool enable) | |
14260 | { | |
14261 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14262 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14263 | } | |
0d381245 | 14264 | |
1900040c MS |
14265 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14266 | If from_tty is nonzero, it prints a message to that effect, | |
14267 | which ends with a period (no newline). */ | |
14268 | ||
c906108c | 14269 | void |
fba45db2 | 14270 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14271 | { |
14272 | /* Never disable a watchpoint scope breakpoint; we want to | |
14273 | hit them when we leave scope so we can delete both the | |
14274 | watchpoint and its scope breakpoint at that time. */ | |
14275 | if (bpt->type == bp_watchpoint_scope) | |
14276 | return; | |
14277 | ||
b5de0fa7 | 14278 | bpt->enable_state = bp_disabled; |
c906108c | 14279 | |
b775012e LM |
14280 | /* Mark breakpoint locations modified. */ |
14281 | mark_breakpoint_modified (bpt); | |
14282 | ||
d248b706 KY |
14283 | if (target_supports_enable_disable_tracepoint () |
14284 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14285 | { | |
40cb8ca5 | 14286 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
14287 | target_disable_tracepoint (location); |
14288 | } | |
14289 | ||
44702360 | 14290 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14291 | |
76727919 | 14292 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14293 | } |
14294 | ||
d0fe4701 XR |
14295 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14296 | specified in ARGS. ARGS may be in any of the formats handled by | |
14297 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14298 | or disable the breakpoints/locations. */ | |
14299 | ||
c906108c | 14300 | static void |
d0fe4701 | 14301 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14302 | { |
c906108c | 14303 | if (args == 0) |
46c6471b | 14304 | { |
43892fdf | 14305 | for (breakpoint *bpt : all_breakpoints ()) |
46c6471b | 14306 | if (user_breakpoint_p (bpt)) |
d0fe4701 XR |
14307 | { |
14308 | if (enable) | |
14309 | enable_breakpoint (bpt); | |
14310 | else | |
14311 | disable_breakpoint (bpt); | |
14312 | } | |
46c6471b | 14313 | } |
9eaabc75 | 14314 | else |
0d381245 | 14315 | { |
cb791d59 | 14316 | std::string num = extract_arg (&args); |
9eaabc75 | 14317 | |
cb791d59 | 14318 | while (!num.empty ()) |
d248b706 | 14319 | { |
d0fe4701 | 14320 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14321 | |
cc638e86 PA |
14322 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14323 | ||
14324 | if (bp_loc_range.first == bp_loc_range.second | |
14325 | && bp_loc_range.first == 0) | |
d0fe4701 | 14326 | { |
cc638e86 PA |
14327 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14328 | map_breakpoint_number_range (bp_num_range, | |
14329 | enable | |
14330 | ? enable_breakpoint | |
14331 | : disable_breakpoint); | |
14332 | } | |
14333 | else | |
14334 | { | |
14335 | /* Handle breakpoint ids with formats 'x.y' or | |
14336 | 'x.y-z'. */ | |
14337 | enable_disable_breakpoint_location_range | |
14338 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14339 | } |
9eaabc75 | 14340 | num = extract_arg (&args); |
d248b706 | 14341 | } |
0d381245 | 14342 | } |
c906108c SS |
14343 | } |
14344 | ||
d0fe4701 XR |
14345 | /* The disable command disables the specified breakpoints/locations |
14346 | (or all defined breakpoints) so they're no longer effective in | |
14347 | stopping the inferior. ARGS may be in any of the forms defined in | |
14348 | extract_bp_number_and_location. */ | |
14349 | ||
14350 | static void | |
14351 | disable_command (const char *args, int from_tty) | |
14352 | { | |
14353 | enable_disable_command (args, from_tty, false); | |
14354 | } | |
14355 | ||
c906108c | 14356 | static void |
816338b5 SS |
14357 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14358 | int count) | |
c906108c | 14359 | { |
afe38095 | 14360 | int target_resources_ok; |
c906108c SS |
14361 | |
14362 | if (bpt->type == bp_hardware_breakpoint) | |
14363 | { | |
14364 | int i; | |
c5aa993b | 14365 | i = hw_breakpoint_used_count (); |
53a5351d | 14366 | target_resources_ok = |
d92524f1 | 14367 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14368 | i + 1, 0); |
c906108c | 14369 | if (target_resources_ok == 0) |
8a3fe4f8 | 14370 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14371 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14372 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14373 | } |
14374 | ||
cc60f2e3 | 14375 | if (is_watchpoint (bpt)) |
c906108c | 14376 | { |
d07205c2 | 14377 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14378 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14379 | |
a70b8144 | 14380 | try |
c906108c | 14381 | { |
3a5c3e22 PA |
14382 | struct watchpoint *w = (struct watchpoint *) bpt; |
14383 | ||
1e718ff1 TJB |
14384 | orig_enable_state = bpt->enable_state; |
14385 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14386 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14387 | } |
230d2906 | 14388 | catch (const gdb_exception &e) |
c5aa993b | 14389 | { |
1e718ff1 | 14390 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14391 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14392 | bpt->number); | |
14393 | return; | |
c5aa993b | 14394 | } |
c906108c | 14395 | } |
0101ce28 | 14396 | |
b775012e LM |
14397 | bpt->enable_state = bp_enabled; |
14398 | ||
14399 | /* Mark breakpoint locations modified. */ | |
14400 | mark_breakpoint_modified (bpt); | |
14401 | ||
d248b706 KY |
14402 | if (target_supports_enable_disable_tracepoint () |
14403 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14404 | { | |
40cb8ca5 | 14405 | for (bp_location *location : bpt->locations ()) |
d248b706 KY |
14406 | target_enable_tracepoint (location); |
14407 | } | |
14408 | ||
b4c291bb | 14409 | bpt->disposition = disposition; |
816338b5 | 14410 | bpt->enable_count = count; |
44702360 | 14411 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14412 | |
76727919 | 14413 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14414 | } |
14415 | ||
fe3f5fa8 | 14416 | |
c906108c | 14417 | void |
fba45db2 | 14418 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14419 | { |
816338b5 | 14420 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14421 | } |
14422 | ||
d0fe4701 XR |
14423 | /* The enable command enables the specified breakpoints/locations (or |
14424 | all defined breakpoints) so they once again become (or continue to | |
14425 | be) effective in stopping the inferior. ARGS may be in any of the | |
14426 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14427 | |
c906108c | 14428 | static void |
981a3fb3 | 14429 | enable_command (const char *args, int from_tty) |
c906108c | 14430 | { |
d0fe4701 | 14431 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14432 | } |
14433 | ||
c906108c | 14434 | static void |
4495129a | 14435 | enable_once_command (const char *args, int from_tty) |
c906108c | 14436 | { |
48649e1b TT |
14437 | map_breakpoint_numbers |
14438 | (args, [&] (breakpoint *b) | |
14439 | { | |
14440 | iterate_over_related_breakpoints | |
14441 | (b, [&] (breakpoint *bpt) | |
14442 | { | |
14443 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14444 | }); | |
14445 | }); | |
816338b5 SS |
14446 | } |
14447 | ||
14448 | static void | |
4495129a | 14449 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14450 | { |
b9d61307 SM |
14451 | int count; |
14452 | ||
14453 | if (args == NULL) | |
14454 | error_no_arg (_("hit count")); | |
14455 | ||
14456 | count = get_number (&args); | |
816338b5 | 14457 | |
48649e1b TT |
14458 | map_breakpoint_numbers |
14459 | (args, [&] (breakpoint *b) | |
14460 | { | |
14461 | iterate_over_related_breakpoints | |
14462 | (b, [&] (breakpoint *bpt) | |
14463 | { | |
14464 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14465 | }); | |
14466 | }); | |
c906108c SS |
14467 | } |
14468 | ||
c906108c | 14469 | static void |
4495129a | 14470 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14471 | { |
48649e1b TT |
14472 | map_breakpoint_numbers |
14473 | (args, [&] (breakpoint *b) | |
14474 | { | |
14475 | iterate_over_related_breakpoints | |
14476 | (b, [&] (breakpoint *bpt) | |
14477 | { | |
14478 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14479 | }); | |
14480 | }); | |
c906108c SS |
14481 | } |
14482 | \f | |
1f3b5d1b PP |
14483 | /* Invalidate last known value of any hardware watchpoint if |
14484 | the memory which that value represents has been written to by | |
14485 | GDB itself. */ | |
14486 | ||
14487 | static void | |
8de0566d YQ |
14488 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14489 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14490 | const bfd_byte *data) |
14491 | { | |
43892fdf | 14492 | for (breakpoint *bp : all_breakpoints ()) |
1f3b5d1b | 14493 | if (bp->enable_state == bp_enabled |
3a5c3e22 | 14494 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14495 | { |
3a5c3e22 | 14496 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14497 | |
850645cf | 14498 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 | 14499 | { |
40cb8ca5 | 14500 | for (bp_location *loc : bp->locations ()) |
3a5c3e22 PA |
14501 | if (loc->loc_type == bp_loc_hardware_watchpoint |
14502 | && loc->address + loc->length > addr | |
14503 | && addr + len > loc->address) | |
14504 | { | |
3a5c3e22 | 14505 | wp->val = NULL; |
4c1d86d9 | 14506 | wp->val_valid = false; |
3a5c3e22 PA |
14507 | } |
14508 | } | |
1f3b5d1b PP |
14509 | } |
14510 | } | |
14511 | ||
8181d85f DJ |
14512 | /* Create and insert a breakpoint for software single step. */ |
14513 | ||
14514 | void | |
6c95b8df | 14515 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14516 | const address_space *aspace, |
4a64f543 | 14517 | CORE_ADDR next_pc) |
8181d85f | 14518 | { |
7c16b83e PA |
14519 | struct thread_info *tp = inferior_thread (); |
14520 | struct symtab_and_line sal; | |
14521 | CORE_ADDR pc = next_pc; | |
8181d85f | 14522 | |
34b7e8a6 PA |
14523 | if (tp->control.single_step_breakpoints == NULL) |
14524 | { | |
14525 | tp->control.single_step_breakpoints | |
5d5658a1 | 14526 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14527 | } |
8181d85f | 14528 | |
7c16b83e PA |
14529 | sal = find_pc_line (pc, 0); |
14530 | sal.pc = pc; | |
14531 | sal.section = find_pc_overlay (pc); | |
14532 | sal.explicit_pc = 1; | |
34b7e8a6 | 14533 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14534 | |
7c16b83e | 14535 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14536 | } |
14537 | ||
93f9a11f YQ |
14538 | /* Insert single step breakpoints according to the current state. */ |
14539 | ||
14540 | int | |
14541 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14542 | { | |
f5ea389a | 14543 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14544 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14545 | |
f5ea389a | 14546 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14547 | |
a0ff9e1a | 14548 | if (!next_pcs.empty ()) |
93f9a11f | 14549 | { |
f5ea389a | 14550 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14551 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14552 | |
a0ff9e1a | 14553 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14554 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14555 | ||
93f9a11f YQ |
14556 | return 1; |
14557 | } | |
14558 | else | |
14559 | return 0; | |
14560 | } | |
14561 | ||
34b7e8a6 | 14562 | /* See breakpoint.h. */ |
f02253f1 HZ |
14563 | |
14564 | int | |
7c16b83e | 14565 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14566 | const address_space *aspace, |
7c16b83e | 14567 | CORE_ADDR pc) |
1aafd4da | 14568 | { |
40cb8ca5 | 14569 | for (bp_location *loc : bp->locations ()) |
7c16b83e PA |
14570 | if (loc->inserted |
14571 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14572 | return 1; | |
1aafd4da | 14573 | |
7c16b83e | 14574 | return 0; |
ef370185 JB |
14575 | } |
14576 | ||
14577 | /* Check whether a software single-step breakpoint is inserted at | |
14578 | PC. */ | |
14579 | ||
14580 | int | |
accd0bcd | 14581 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14582 | CORE_ADDR pc) |
14583 | { | |
43892fdf | 14584 | for (breakpoint *bpt : all_breakpoints ()) |
34b7e8a6 PA |
14585 | { |
14586 | if (bpt->type == bp_single_step | |
14587 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14588 | return 1; | |
14589 | } | |
14590 | return 0; | |
1aafd4da UW |
14591 | } |
14592 | ||
1042e4c0 SS |
14593 | /* Tracepoint-specific operations. */ |
14594 | ||
14595 | /* Set tracepoint count to NUM. */ | |
14596 | static void | |
14597 | set_tracepoint_count (int num) | |
14598 | { | |
14599 | tracepoint_count = num; | |
4fa62494 | 14600 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14601 | } |
14602 | ||
70221824 | 14603 | static void |
0b39b52e | 14604 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14605 | { |
ffc2605c TT |
14606 | event_location_up location = string_to_event_location (&arg, |
14607 | current_language); | |
bac7c5cf GB |
14608 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
14609 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 14610 | |
558a9d82 | 14611 | create_breakpoint (get_current_arch (), |
ffc2605c | 14612 | location.get (), |
10a636cc | 14613 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
14614 | 0 /* tempflag */, |
14615 | bp_tracepoint /* type_wanted */, | |
14616 | 0 /* Ignore count */, | |
14617 | pending_break_support, | |
14618 | ops, | |
14619 | from_tty, | |
14620 | 1 /* enabled */, | |
14621 | 0 /* internal */, 0); | |
1042e4c0 SS |
14622 | } |
14623 | ||
70221824 | 14624 | static void |
0b39b52e | 14625 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14626 | { |
ffc2605c TT |
14627 | event_location_up location = string_to_event_location (&arg, |
14628 | current_language); | |
558a9d82 | 14629 | create_breakpoint (get_current_arch (), |
ffc2605c | 14630 | location.get (), |
10a636cc | 14631 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
14632 | 0 /* tempflag */, |
14633 | bp_fast_tracepoint /* type_wanted */, | |
14634 | 0 /* Ignore count */, | |
14635 | pending_break_support, | |
14636 | &tracepoint_breakpoint_ops, | |
14637 | from_tty, | |
14638 | 1 /* enabled */, | |
14639 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14640 | } |
14641 | ||
14642 | /* strace command implementation. Creates a static tracepoint. */ | |
14643 | ||
70221824 | 14644 | static void |
0b39b52e | 14645 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14646 | { |
983af33b | 14647 | struct breakpoint_ops *ops; |
ffc2605c | 14648 | event_location_up location; |
983af33b SDJ |
14649 | |
14650 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14651 | or with a normal static tracepoint. */ | |
61012eef | 14652 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14653 | { |
14654 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14655 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14656 | } |
983af33b | 14657 | else |
f00aae0f KS |
14658 | { |
14659 | ops = &tracepoint_breakpoint_ops; | |
14660 | location = string_to_event_location (&arg, current_language); | |
14661 | } | |
983af33b | 14662 | |
558a9d82 | 14663 | create_breakpoint (get_current_arch (), |
ffc2605c | 14664 | location.get (), |
10a636cc | 14665 | NULL, 0, arg, false, 1 /* parse arg */, |
558a9d82 YQ |
14666 | 0 /* tempflag */, |
14667 | bp_static_tracepoint /* type_wanted */, | |
14668 | 0 /* Ignore count */, | |
14669 | pending_break_support, | |
14670 | ops, | |
14671 | from_tty, | |
14672 | 1 /* enabled */, | |
14673 | 0 /* internal */, 0); | |
7a697b8d SS |
14674 | } |
14675 | ||
409873ef SS |
14676 | /* Set up a fake reader function that gets command lines from a linked |
14677 | list that was acquired during tracepoint uploading. */ | |
14678 | ||
14679 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14680 | static int next_cmd; |
409873ef SS |
14681 | |
14682 | static char * | |
14683 | read_uploaded_action (void) | |
14684 | { | |
a18ba4e4 | 14685 | char *rslt = nullptr; |
409873ef | 14686 | |
a18ba4e4 SM |
14687 | if (next_cmd < this_utp->cmd_strings.size ()) |
14688 | { | |
67aa1f3c | 14689 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14690 | next_cmd++; |
14691 | } | |
409873ef SS |
14692 | |
14693 | return rslt; | |
14694 | } | |
14695 | ||
00bf0b85 SS |
14696 | /* Given information about a tracepoint as recorded on a target (which |
14697 | can be either a live system or a trace file), attempt to create an | |
14698 | equivalent GDB tracepoint. This is not a reliable process, since | |
14699 | the target does not necessarily have all the information used when | |
14700 | the tracepoint was originally defined. */ | |
14701 | ||
d9b3f62e | 14702 | struct tracepoint * |
00bf0b85 | 14703 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14704 | { |
f2fc3015 TT |
14705 | const char *addr_str; |
14706 | char small_buf[100]; | |
d9b3f62e | 14707 | struct tracepoint *tp; |
fd9b8c24 | 14708 | |
409873ef | 14709 | if (utp->at_string) |
67aa1f3c | 14710 | addr_str = utp->at_string.get (); |
409873ef SS |
14711 | else |
14712 | { | |
14713 | /* In the absence of a source location, fall back to raw | |
14714 | address. Since there is no way to confirm that the address | |
14715 | means the same thing as when the trace was started, warn the | |
14716 | user. */ | |
3e43a32a MS |
14717 | warning (_("Uploaded tracepoint %d has no " |
14718 | "source location, using raw address"), | |
409873ef | 14719 | utp->number); |
8c042590 | 14720 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14721 | addr_str = small_buf; |
14722 | } | |
14723 | ||
14724 | /* There's not much we can do with a sequence of bytecodes. */ | |
14725 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14726 | warning (_("Uploaded tracepoint %d condition " |
14727 | "has no source form, ignoring it"), | |
409873ef | 14728 | utp->number); |
d5551862 | 14729 | |
ffc2605c TT |
14730 | event_location_up location = string_to_event_location (&addr_str, |
14731 | current_language); | |
8cdf0e15 | 14732 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14733 | location.get (), |
67aa1f3c | 14734 | utp->cond_string.get (), -1, addr_str, |
10a636cc | 14735 | false /* force_condition */, |
e7e0cddf | 14736 | 0 /* parse cond/thread */, |
8cdf0e15 | 14737 | 0 /* tempflag */, |
0fb4aa4b | 14738 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14739 | 0 /* Ignore count */, |
14740 | pending_break_support, | |
348d480f | 14741 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14742 | 0 /* from_tty */, |
84f4c1fe | 14743 | utp->enabled /* enabled */, |
44f238bb PA |
14744 | 0 /* internal */, |
14745 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14746 | return NULL; |
fd9b8c24 | 14747 | |
409873ef | 14748 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14749 | tp = get_tracepoint (tracepoint_count); |
14750 | gdb_assert (tp != NULL); | |
d5551862 | 14751 | |
00bf0b85 SS |
14752 | if (utp->pass > 0) |
14753 | { | |
8c042590 | 14754 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14755 | tp->number); |
00bf0b85 | 14756 | |
409873ef | 14757 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14758 | } |
14759 | ||
409873ef SS |
14760 | /* If we have uploaded versions of the original commands, set up a |
14761 | special-purpose "reader" function and call the usual command line | |
14762 | reader, then pass the result to the breakpoint command-setting | |
14763 | function. */ | |
a18ba4e4 | 14764 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14765 | { |
12973681 | 14766 | counted_command_line cmd_list; |
00bf0b85 | 14767 | |
409873ef | 14768 | this_utp = utp; |
3149d8c1 | 14769 | next_cmd = 0; |
d5551862 | 14770 | |
60b3cef2 | 14771 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14772 | |
c1fc2657 | 14773 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14774 | } |
a18ba4e4 SM |
14775 | else if (!utp->actions.empty () |
14776 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14777 | warning (_("Uploaded tracepoint %d actions " |
14778 | "have no source form, ignoring them"), | |
409873ef | 14779 | utp->number); |
00bf0b85 | 14780 | |
f196051f | 14781 | /* Copy any status information that might be available. */ |
c1fc2657 | 14782 | tp->hit_count = utp->hit_count; |
f196051f SS |
14783 | tp->traceframe_usage = utp->traceframe_usage; |
14784 | ||
00bf0b85 | 14785 | return tp; |
d9b3f62e | 14786 | } |
00bf0b85 | 14787 | |
1042e4c0 SS |
14788 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14789 | omitted. */ | |
14790 | ||
14791 | static void | |
1d12d88f | 14792 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14793 | { |
79a45e25 | 14794 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14795 | int num_printed; |
1042e4c0 | 14796 | |
5c458ae8 | 14797 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
14798 | |
14799 | if (num_printed == 0) | |
1042e4c0 | 14800 | { |
e5a67952 | 14801 | if (args == NULL || *args == '\0') |
112e8700 | 14802 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14803 | else |
112e8700 | 14804 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14805 | } |
ad443146 SS |
14806 | |
14807 | default_collect_info (); | |
1042e4c0 SS |
14808 | } |
14809 | ||
4a64f543 | 14810 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14811 | Not supported by all targets. */ |
14812 | static void | |
5fed81ff | 14813 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14814 | { |
14815 | enable_command (args, from_tty); | |
14816 | } | |
14817 | ||
4a64f543 | 14818 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14819 | Not supported by all targets. */ |
14820 | static void | |
5fed81ff | 14821 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14822 | { |
14823 | disable_command (args, from_tty); | |
14824 | } | |
14825 | ||
4a64f543 | 14826 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14827 | static void |
4495129a | 14828 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14829 | { |
1042e4c0 SS |
14830 | dont_repeat (); |
14831 | ||
14832 | if (arg == 0) | |
14833 | { | |
14834 | int breaks_to_delete = 0; | |
14835 | ||
14836 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
14837 | Do not delete internal or call-dummy breakpoints, these |
14838 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 14839 | argument. */ |
f6d17b2b | 14840 | for (breakpoint *tp : all_tracepoints ()) |
1428b37a | 14841 | if (is_tracepoint (tp) && user_breakpoint_p (tp)) |
1042e4c0 SS |
14842 | { |
14843 | breaks_to_delete = 1; | |
14844 | break; | |
14845 | } | |
1042e4c0 SS |
14846 | |
14847 | /* Ask user only if there are some breakpoints to delete. */ | |
14848 | if (!from_tty | |
14849 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14850 | { | |
1428b37a | 14851 | for (breakpoint *b : all_breakpoints_safe ()) |
46c6471b | 14852 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14853 | delete_breakpoint (b); |
1042e4c0 SS |
14854 | } |
14855 | } | |
14856 | else | |
48649e1b | 14857 | map_breakpoint_numbers |
b926417a | 14858 | (arg, [&] (breakpoint *br) |
48649e1b | 14859 | { |
b926417a | 14860 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14861 | }); |
1042e4c0 SS |
14862 | } |
14863 | ||
197f0a60 TT |
14864 | /* Helper function for trace_pass_command. */ |
14865 | ||
14866 | static void | |
d9b3f62e | 14867 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14868 | { |
d9b3f62e | 14869 | tp->pass_count = count; |
76727919 | 14870 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14871 | if (from_tty) |
14872 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14873 | tp->number, count); |
197f0a60 TT |
14874 | } |
14875 | ||
1042e4c0 SS |
14876 | /* Set passcount for tracepoint. |
14877 | ||
14878 | First command argument is passcount, second is tracepoint number. | |
14879 | If tracepoint number omitted, apply to most recently defined. | |
14880 | Also accepts special argument "all". */ | |
14881 | ||
14882 | static void | |
0b39b52e | 14883 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14884 | { |
d9b3f62e | 14885 | struct tracepoint *t1; |
0b39b52e | 14886 | ULONGEST count; |
1042e4c0 SS |
14887 | |
14888 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14889 | error (_("passcount command requires an " |
14890 | "argument (count + optional TP num)")); | |
1042e4c0 | 14891 | |
0b39b52e | 14892 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14893 | |
529480d0 | 14894 | args = skip_spaces (args); |
1042e4c0 SS |
14895 | if (*args && strncasecmp (args, "all", 3) == 0) |
14896 | { | |
14897 | args += 3; /* Skip special argument "all". */ | |
1042e4c0 SS |
14898 | if (*args) |
14899 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14900 | |
f6d17b2b | 14901 | for (breakpoint *b : all_tracepoints ()) |
01add95b SM |
14902 | { |
14903 | t1 = (struct tracepoint *) b; | |
14904 | trace_pass_set_count (t1, count, from_tty); | |
14905 | } | |
197f0a60 TT |
14906 | } |
14907 | else if (*args == '\0') | |
1042e4c0 | 14908 | { |
5fa1d40e | 14909 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14910 | if (t1) |
197f0a60 TT |
14911 | trace_pass_set_count (t1, count, from_tty); |
14912 | } | |
14913 | else | |
14914 | { | |
bfd28288 PA |
14915 | number_or_range_parser parser (args); |
14916 | while (!parser.finished ()) | |
1042e4c0 | 14917 | { |
bfd28288 | 14918 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14919 | if (t1) |
14920 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14921 | } |
14922 | } | |
1042e4c0 SS |
14923 | } |
14924 | ||
d9b3f62e | 14925 | struct tracepoint * |
1042e4c0 SS |
14926 | get_tracepoint (int num) |
14927 | { | |
f6d17b2b | 14928 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14929 | if (t->number == num) |
d9b3f62e | 14930 | return (struct tracepoint *) t; |
1042e4c0 SS |
14931 | |
14932 | return NULL; | |
14933 | } | |
14934 | ||
d5551862 SS |
14935 | /* Find the tracepoint with the given target-side number (which may be |
14936 | different from the tracepoint number after disconnecting and | |
14937 | reconnecting). */ | |
14938 | ||
d9b3f62e | 14939 | struct tracepoint * |
d5551862 SS |
14940 | get_tracepoint_by_number_on_target (int num) |
14941 | { | |
f6d17b2b | 14942 | for (breakpoint *b : all_tracepoints ()) |
d9b3f62e PA |
14943 | { |
14944 | struct tracepoint *t = (struct tracepoint *) b; | |
14945 | ||
14946 | if (t->number_on_target == num) | |
14947 | return t; | |
14948 | } | |
d5551862 SS |
14949 | |
14950 | return NULL; | |
14951 | } | |
14952 | ||
1042e4c0 | 14953 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14954 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14955 | If the argument is missing, the most recent tracepoint |
14956 | (tracepoint_count) is returned. */ | |
14957 | ||
d9b3f62e | 14958 | struct tracepoint * |
0b39b52e | 14959 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14960 | number_or_range_parser *parser) |
1042e4c0 | 14961 | { |
1042e4c0 | 14962 | int tpnum; |
0b39b52e | 14963 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14964 | |
bfd28288 | 14965 | if (parser != NULL) |
197f0a60 | 14966 | { |
bfd28288 PA |
14967 | gdb_assert (!parser->finished ()); |
14968 | tpnum = parser->get_number (); | |
197f0a60 TT |
14969 | } |
14970 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14971 | tpnum = tracepoint_count; |
1042e4c0 | 14972 | else |
197f0a60 | 14973 | tpnum = get_number (arg); |
1042e4c0 SS |
14974 | |
14975 | if (tpnum <= 0) | |
14976 | { | |
14977 | if (instring && *instring) | |
14978 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14979 | instring); | |
14980 | else | |
5fa1d40e | 14981 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14982 | return NULL; |
14983 | } | |
14984 | ||
f6d17b2b | 14985 | for (breakpoint *t : all_tracepoints ()) |
1042e4c0 | 14986 | if (t->number == tpnum) |
d9b3f62e | 14987 | return (struct tracepoint *) t; |
1042e4c0 | 14988 | |
1042e4c0 SS |
14989 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14990 | return NULL; | |
14991 | } | |
14992 | ||
d9b3f62e PA |
14993 | void |
14994 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14995 | { | |
14996 | if (b->thread != -1) | |
14997 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14998 | ||
14999 | if (b->task != 0) | |
15000 | fprintf_unfiltered (fp, " task %d", b->task); | |
15001 | ||
15002 | fprintf_unfiltered (fp, "\n"); | |
15003 | } | |
15004 | ||
6149aea9 PA |
15005 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15006 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15007 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 15008 | true. */ |
6149aea9 | 15009 | |
1042e4c0 | 15010 | static void |
4495129a | 15011 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 15012 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 | 15013 | { |
6149aea9 | 15014 | int any = 0; |
6149aea9 | 15015 | int extra_trace_bits = 0; |
1042e4c0 | 15016 | |
6149aea9 PA |
15017 | if (filename == 0 || *filename == 0) |
15018 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15019 | |
15020 | /* See if we have anything to save. */ | |
43892fdf | 15021 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
15022 | { |
15023 | /* Skip internal and momentary breakpoints. */ | |
15024 | if (!user_breakpoint_p (tp)) | |
15025 | continue; | |
6149aea9 | 15026 | |
01add95b SM |
15027 | /* If we have a filter, only save the breakpoints it accepts. */ |
15028 | if (filter && !filter (tp)) | |
15029 | continue; | |
6149aea9 | 15030 | |
01add95b | 15031 | any = 1; |
6149aea9 | 15032 | |
01add95b SM |
15033 | if (is_tracepoint (tp)) |
15034 | { | |
15035 | extra_trace_bits = 1; | |
6149aea9 | 15036 | |
01add95b SM |
15037 | /* We can stop searching. */ |
15038 | break; | |
15039 | } | |
15040 | } | |
6149aea9 PA |
15041 | |
15042 | if (!any) | |
1042e4c0 | 15043 | { |
6149aea9 | 15044 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15045 | return; |
15046 | } | |
15047 | ||
ee0c3293 | 15048 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15049 | |
15050 | stdio_file fp; | |
15051 | ||
ee0c3293 | 15052 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15053 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15054 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15055 | |
6149aea9 | 15056 | if (extra_trace_bits) |
d7e74731 | 15057 | save_trace_state_variables (&fp); |
8bf6485c | 15058 | |
43892fdf | 15059 | for (breakpoint *tp : all_breakpoints ()) |
01add95b SM |
15060 | { |
15061 | /* Skip internal and momentary breakpoints. */ | |
15062 | if (!user_breakpoint_p (tp)) | |
15063 | continue; | |
8bf6485c | 15064 | |
01add95b SM |
15065 | /* If we have a filter, only save the breakpoints it accepts. */ |
15066 | if (filter && !filter (tp)) | |
15067 | continue; | |
6149aea9 | 15068 | |
01add95b | 15069 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15070 | |
01add95b SM |
15071 | /* Note, we can't rely on tp->number for anything, as we can't |
15072 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15073 | instead. */ | |
6149aea9 | 15074 | |
01add95b SM |
15075 | if (tp->cond_string) |
15076 | fp.printf (" condition $bpnum %s\n", tp->cond_string); | |
6149aea9 | 15077 | |
01add95b SM |
15078 | if (tp->ignore_count) |
15079 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); | |
6149aea9 | 15080 | |
01add95b SM |
15081 | if (tp->type != bp_dprintf && tp->commands) |
15082 | { | |
15083 | fp.puts (" commands\n"); | |
1042e4c0 | 15084 | |
01add95b SM |
15085 | current_uiout->redirect (&fp); |
15086 | try | |
15087 | { | |
15088 | print_command_lines (current_uiout, tp->commands.get (), 2); | |
15089 | } | |
15090 | catch (const gdb_exception &ex) | |
15091 | { | |
15092 | current_uiout->redirect (NULL); | |
15093 | throw; | |
15094 | } | |
6149aea9 | 15095 | |
01add95b SM |
15096 | current_uiout->redirect (NULL); |
15097 | fp.puts (" end\n"); | |
15098 | } | |
6149aea9 | 15099 | |
01add95b SM |
15100 | if (tp->enable_state == bp_disabled) |
15101 | fp.puts ("disable $bpnum\n"); | |
6149aea9 | 15102 | |
01add95b SM |
15103 | /* If this is a multi-location breakpoint, check if the locations |
15104 | should be individually disabled. Watchpoint locations are | |
15105 | special, and not user visible. */ | |
15106 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15107 | { | |
15108 | int n = 1; | |
40cb8ca5 | 15109 | |
01add95b SM |
15110 | for (bp_location *loc : tp->locations ()) |
15111 | { | |
15112 | if (!loc->enabled) | |
15113 | fp.printf ("disable $bpnum.%d\n", n); | |
15114 | ||
15115 | n++; | |
15116 | } | |
15117 | } | |
15118 | } | |
8bf6485c | 15119 | |
6149aea9 | 15120 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15121 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15122 | |
1042e4c0 | 15123 | if (from_tty) |
ee0c3293 | 15124 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15125 | } |
15126 | ||
15127 | /* The `save breakpoints' command. */ | |
15128 | ||
15129 | static void | |
4495129a | 15130 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15131 | { |
15132 | save_breakpoints (args, from_tty, NULL); | |
15133 | } | |
15134 | ||
15135 | /* The `save tracepoints' command. */ | |
15136 | ||
15137 | static void | |
4495129a | 15138 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15139 | { |
15140 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15141 | } |
15142 | ||
c906108c | 15143 | \f |
629500fa KS |
15144 | /* This help string is used to consolidate all the help string for specifying |
15145 | locations used by several commands. */ | |
15146 | ||
15147 | #define LOCATION_HELP_STRING \ | |
15148 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15149 | source filename, function name, label name, and line number.\n\ | |
15150 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15151 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15152 | \"factorial.c:fact:the_top\".\n\ | |
15153 | \n\ | |
15154 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15155 | program. Example: To specify the fourth byte past the start function\n\ | |
15156 | \"main\", use \"*main + 4\".\n\ | |
15157 | \n\ | |
15158 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15159 | syntax to specify location parameters.\n\ | |
15160 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15161 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15162 | -function fact -label the_top\".\n\ |
15163 | \n\ | |
15164 | By default, a specified function is matched against the program's\n\ | |
15165 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15166 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15167 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15168 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15169 | specified name as a complete fully-qualified name instead." |
629500fa | 15170 | |
4a64f543 MS |
15171 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15172 | commands. It is defined as a macro to prevent duplication. | |
15173 | COMMAND should be a string constant containing the name of the | |
15174 | command. */ | |
629500fa | 15175 | |
31e2b00f | 15176 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
15177 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
15178 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
15179 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
15180 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15181 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15182 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15183 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15184 | below.\n\ | |
15185 | \n\ | |
dc10affe PA |
15186 | With no LOCATION, uses current execution address of the selected\n\ |
15187 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15188 | \n\ |
15189 | THREADNUM is the number from \"info threads\".\n\ | |
15190 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
15191 | \n\ |
15192 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
15193 | it is invalid for all current locations.\n\ | |
89549d7f | 15194 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15195 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15196 | conditions are different.\n\ | |
31e2b00f AS |
15197 | \n\ |
15198 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15199 | ||
44feb3ce TT |
15200 | /* List of subcommands for "catch". */ |
15201 | static struct cmd_list_element *catch_cmdlist; | |
15202 | ||
15203 | /* List of subcommands for "tcatch". */ | |
15204 | static struct cmd_list_element *tcatch_cmdlist; | |
15205 | ||
9ac4176b | 15206 | void |
a121b7c1 | 15207 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15208 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15209 | completer_ftype *completer, |
44feb3ce TT |
15210 | void *user_data_catch, |
15211 | void *user_data_tcatch) | |
15212 | { | |
15213 | struct cmd_list_element *command; | |
15214 | ||
0450cc4c | 15215 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15216 | &catch_cmdlist); |
15217 | set_cmd_sfunc (command, sfunc); | |
0f8e2034 | 15218 | command->set_context (user_data_catch); |
a96d9b2e | 15219 | set_cmd_completer (command, completer); |
44feb3ce | 15220 | |
0450cc4c | 15221 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15222 | &tcatch_cmdlist); |
15223 | set_cmd_sfunc (command, sfunc); | |
0f8e2034 | 15224 | command->set_context (user_data_tcatch); |
a96d9b2e | 15225 | set_cmd_completer (command, completer); |
44feb3ce TT |
15226 | } |
15227 | ||
0574c78f GB |
15228 | /* Zero if any of the breakpoint's locations could be a location where |
15229 | functions have been inlined, nonzero otherwise. */ | |
15230 | ||
15231 | static int | |
15232 | is_non_inline_function (struct breakpoint *b) | |
15233 | { | |
15234 | /* The shared library event breakpoint is set on the address of a | |
15235 | non-inline function. */ | |
15236 | if (b->type == bp_shlib_event) | |
15237 | return 1; | |
15238 | ||
15239 | return 0; | |
15240 | } | |
15241 | ||
15242 | /* Nonzero if the specified PC cannot be a location where functions | |
15243 | have been inlined. */ | |
15244 | ||
15245 | int | |
accd0bcd | 15246 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15247 | const struct target_waitstatus *ws) |
0574c78f | 15248 | { |
43892fdf | 15249 | for (breakpoint *b : all_breakpoints ()) |
0574c78f GB |
15250 | { |
15251 | if (!is_non_inline_function (b)) | |
15252 | continue; | |
15253 | ||
40cb8ca5 | 15254 | for (bp_location *bl : b->locations ()) |
0574c78f GB |
15255 | { |
15256 | if (!bl->shlib_disabled | |
09ac7c10 | 15257 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15258 | return 1; |
15259 | } | |
15260 | } | |
15261 | ||
15262 | return 0; | |
15263 | } | |
15264 | ||
2f202fde JK |
15265 | /* Remove any references to OBJFILE which is going to be freed. */ |
15266 | ||
15267 | void | |
15268 | breakpoint_free_objfile (struct objfile *objfile) | |
15269 | { | |
48d7020b | 15270 | for (bp_location *loc : all_bp_locations ()) |
eb822aa6 | 15271 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15272 | loc->symtab = NULL; |
15273 | } | |
15274 | ||
2060206e PA |
15275 | void |
15276 | initialize_breakpoint_ops (void) | |
15277 | { | |
15278 | static int initialized = 0; | |
15279 | ||
15280 | struct breakpoint_ops *ops; | |
15281 | ||
15282 | if (initialized) | |
15283 | return; | |
15284 | initialized = 1; | |
15285 | ||
15286 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15287 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15288 | internal and momentary breakpoints, etc.). */ | |
15289 | ops = &bkpt_base_breakpoint_ops; | |
15290 | *ops = base_breakpoint_ops; | |
15291 | ops->re_set = bkpt_re_set; | |
15292 | ops->insert_location = bkpt_insert_location; | |
15293 | ops->remove_location = bkpt_remove_location; | |
15294 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15295 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15296 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15297 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15298 | |
15299 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15300 | ops = &bkpt_breakpoint_ops; | |
15301 | *ops = bkpt_base_breakpoint_ops; | |
15302 | ops->re_set = bkpt_re_set; | |
15303 | ops->resources_needed = bkpt_resources_needed; | |
15304 | ops->print_it = bkpt_print_it; | |
15305 | ops->print_mention = bkpt_print_mention; | |
15306 | ops->print_recreate = bkpt_print_recreate; | |
15307 | ||
15308 | /* Ranged breakpoints. */ | |
15309 | ops = &ranged_breakpoint_ops; | |
15310 | *ops = bkpt_breakpoint_ops; | |
15311 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15312 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15313 | ops->print_it = print_it_ranged_breakpoint; | |
15314 | ops->print_one = print_one_ranged_breakpoint; | |
15315 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15316 | ops->print_mention = print_mention_ranged_breakpoint; | |
15317 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15318 | ||
15319 | /* Internal breakpoints. */ | |
15320 | ops = &internal_breakpoint_ops; | |
15321 | *ops = bkpt_base_breakpoint_ops; | |
15322 | ops->re_set = internal_bkpt_re_set; | |
15323 | ops->check_status = internal_bkpt_check_status; | |
15324 | ops->print_it = internal_bkpt_print_it; | |
15325 | ops->print_mention = internal_bkpt_print_mention; | |
15326 | ||
15327 | /* Momentary breakpoints. */ | |
15328 | ops = &momentary_breakpoint_ops; | |
15329 | *ops = bkpt_base_breakpoint_ops; | |
15330 | ops->re_set = momentary_bkpt_re_set; | |
15331 | ops->check_status = momentary_bkpt_check_status; | |
15332 | ops->print_it = momentary_bkpt_print_it; | |
15333 | ops->print_mention = momentary_bkpt_print_mention; | |
15334 | ||
55aa24fb SDJ |
15335 | /* Probe breakpoints. */ |
15336 | ops = &bkpt_probe_breakpoint_ops; | |
15337 | *ops = bkpt_breakpoint_ops; | |
15338 | ops->insert_location = bkpt_probe_insert_location; | |
15339 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15340 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15341 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15342 | |
2060206e PA |
15343 | /* Watchpoints. */ |
15344 | ops = &watchpoint_breakpoint_ops; | |
15345 | *ops = base_breakpoint_ops; | |
15346 | ops->re_set = re_set_watchpoint; | |
15347 | ops->insert_location = insert_watchpoint; | |
15348 | ops->remove_location = remove_watchpoint; | |
15349 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15350 | ops->check_status = check_status_watchpoint; | |
15351 | ops->resources_needed = resources_needed_watchpoint; | |
15352 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15353 | ops->print_it = print_it_watchpoint; | |
15354 | ops->print_mention = print_mention_watchpoint; | |
15355 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15356 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15357 | |
15358 | /* Masked watchpoints. */ | |
15359 | ops = &masked_watchpoint_breakpoint_ops; | |
15360 | *ops = watchpoint_breakpoint_ops; | |
15361 | ops->insert_location = insert_masked_watchpoint; | |
15362 | ops->remove_location = remove_masked_watchpoint; | |
15363 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15364 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15365 | ops->print_it = print_it_masked_watchpoint; | |
15366 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15367 | ops->print_mention = print_mention_masked_watchpoint; | |
15368 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15369 | ||
15370 | /* Tracepoints. */ | |
15371 | ops = &tracepoint_breakpoint_ops; | |
15372 | *ops = base_breakpoint_ops; | |
15373 | ops->re_set = tracepoint_re_set; | |
15374 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15375 | ops->print_one_detail = tracepoint_print_one_detail; | |
15376 | ops->print_mention = tracepoint_print_mention; | |
15377 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15378 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15379 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15380 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15381 | |
55aa24fb SDJ |
15382 | /* Probe tracepoints. */ |
15383 | ops = &tracepoint_probe_breakpoint_ops; | |
15384 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15385 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15386 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15387 | |
983af33b SDJ |
15388 | /* Static tracepoints with marker (`-m'). */ |
15389 | ops = &strace_marker_breakpoint_ops; | |
15390 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15391 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15392 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15393 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15394 | |
15395 | /* Fork catchpoints. */ | |
15396 | ops = &catch_fork_breakpoint_ops; | |
15397 | *ops = base_breakpoint_ops; | |
15398 | ops->insert_location = insert_catch_fork; | |
15399 | ops->remove_location = remove_catch_fork; | |
15400 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15401 | ops->print_it = print_it_catch_fork; | |
15402 | ops->print_one = print_one_catch_fork; | |
15403 | ops->print_mention = print_mention_catch_fork; | |
15404 | ops->print_recreate = print_recreate_catch_fork; | |
15405 | ||
15406 | /* Vfork catchpoints. */ | |
15407 | ops = &catch_vfork_breakpoint_ops; | |
15408 | *ops = base_breakpoint_ops; | |
15409 | ops->insert_location = insert_catch_vfork; | |
15410 | ops->remove_location = remove_catch_vfork; | |
15411 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15412 | ops->print_it = print_it_catch_vfork; | |
15413 | ops->print_one = print_one_catch_vfork; | |
15414 | ops->print_mention = print_mention_catch_vfork; | |
15415 | ops->print_recreate = print_recreate_catch_vfork; | |
15416 | ||
15417 | /* Exec catchpoints. */ | |
15418 | ops = &catch_exec_breakpoint_ops; | |
15419 | *ops = base_breakpoint_ops; | |
2060206e PA |
15420 | ops->insert_location = insert_catch_exec; |
15421 | ops->remove_location = remove_catch_exec; | |
15422 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15423 | ops->print_it = print_it_catch_exec; | |
15424 | ops->print_one = print_one_catch_exec; | |
15425 | ops->print_mention = print_mention_catch_exec; | |
15426 | ops->print_recreate = print_recreate_catch_exec; | |
15427 | ||
edcc5120 TT |
15428 | /* Solib-related catchpoints. */ |
15429 | ops = &catch_solib_breakpoint_ops; | |
15430 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15431 | ops->insert_location = insert_catch_solib; |
15432 | ops->remove_location = remove_catch_solib; | |
15433 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15434 | ops->check_status = check_status_catch_solib; | |
15435 | ops->print_it = print_it_catch_solib; | |
15436 | ops->print_one = print_one_catch_solib; | |
15437 | ops->print_mention = print_mention_catch_solib; | |
15438 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15439 | |
15440 | ops = &dprintf_breakpoint_ops; | |
15441 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15442 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15443 | ops->resources_needed = bkpt_resources_needed; |
15444 | ops->print_it = bkpt_print_it; | |
15445 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15446 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15447 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15448 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15449 | } |
15450 | ||
8bfd80db YQ |
15451 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15452 | ||
15453 | static struct cmd_list_element *enablebreaklist = NULL; | |
15454 | ||
8588b356 SM |
15455 | /* See breakpoint.h. */ |
15456 | ||
15457 | cmd_list_element *commands_cmd_element = nullptr; | |
15458 | ||
6c265988 | 15459 | void _initialize_breakpoint (); |
c906108c | 15460 | void |
6c265988 | 15461 | _initialize_breakpoint () |
c906108c SS |
15462 | { |
15463 | struct cmd_list_element *c; | |
15464 | ||
2060206e PA |
15465 | initialize_breakpoint_ops (); |
15466 | ||
c90e7d63 SM |
15467 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib, |
15468 | "breakpoint"); | |
15469 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile, | |
15470 | "breakpoint"); | |
15471 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change, | |
15472 | "breakpoint"); | |
84acb35a | 15473 | |
c906108c SS |
15474 | breakpoint_chain = 0; |
15475 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15476 | before a breakpoint is set. */ | |
15477 | breakpoint_count = 0; | |
15478 | ||
1042e4c0 SS |
15479 | tracepoint_count = 0; |
15480 | ||
1bedd215 AC |
15481 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15482 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15483 | Usage is `ignore N COUNT'.")); | |
c906108c | 15484 | |
8588b356 SM |
15485 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15486 | commands_command, _("\ | |
18da0c51 MG |
15487 | Set commands to be executed when the given breakpoints are hit.\n\ |
15488 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15489 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15490 | (e.g. `5-7').\n\ | |
c906108c SS |
15491 | With no argument, the targeted breakpoint is the last one set.\n\ |
15492 | The commands themselves follow starting on the next line.\n\ | |
15493 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15494 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15495 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15496 | |
b1d4d8d1 TBA |
15497 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
15498 | static std::string condition_command_help | |
15499 | = gdb::option::build_help (_("\ | |
1bedd215 | 15500 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 15501 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 15502 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
15503 | \n\ |
15504 | Options:\n\ | |
15505 | %OPTIONS%"), cc_opts); | |
15506 | ||
15507 | c = add_com ("condition", class_breakpoint, condition_command, | |
15508 | condition_command_help.c_str ()); | |
15509 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 15510 | |
1bedd215 | 15511 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15512 | Set a temporary breakpoint.\n\ |
c906108c SS |
15513 | Like \"break\" except the breakpoint is only temporary,\n\ |
15514 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15515 | by using \"enable delete\" on the breakpoint number.\n\ |
15516 | \n" | |
15517 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15518 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15519 | |
1bedd215 | 15520 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15521 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15522 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15523 | some target hardware may not have this support.\n\ |
15524 | \n" | |
15525 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15526 | set_cmd_completer (c, location_completer); |
c906108c | 15527 | |
1bedd215 | 15528 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15529 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15530 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15531 | so it will be deleted when hit.\n\ |
15532 | \n" | |
15533 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15534 | set_cmd_completer (c, location_completer); |
c906108c | 15535 | |
3947f654 SM |
15536 | cmd_list_element *enable_cmd |
15537 | = add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ | |
590042fc PW |
15538 | Enable all or some breakpoints.\n\ |
15539 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15540 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15541 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15542 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15543 | With a subcommand you can enable temporarily."), |
3947f654 | 15544 | &enablelist, 1, &cmdlist); |
c906108c | 15545 | |
3947f654 | 15546 | add_com_alias ("en", enable_cmd, class_breakpoint, 1); |
c906108c | 15547 | |
84951ab5 | 15548 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
15549 | Enable all or some breakpoints.\n\ |
15550 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15551 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15552 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15553 | May be abbreviated to simply \"enable\"."), |
2f822da5 | 15554 | &enablebreaklist, 1, &enablelist); |
c906108c | 15555 | |
1a966eab | 15556 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15557 | Enable some breakpoints for one hit.\n\ |
15558 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 15559 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
15560 | &enablebreaklist); |
15561 | ||
1a966eab | 15562 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15563 | Enable some breakpoints and delete when hit.\n\ |
15564 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 15565 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15566 | &enablebreaklist); |
15567 | ||
816338b5 | 15568 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
15569 | Enable some breakpoints for COUNT hits.\n\ |
15570 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15571 | If a breakpoint is hit while enabled in this fashion,\n\ |
15572 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15573 | &enablebreaklist); | |
15574 | ||
1a966eab | 15575 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15576 | Enable some breakpoints and delete when hit.\n\ |
15577 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 15578 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15579 | &enablelist); |
15580 | ||
1a966eab | 15581 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15582 | Enable some breakpoints for one hit.\n\ |
15583 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 15584 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
15585 | &enablelist); |
15586 | ||
15587 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
15588 | Enable some breakpoints for COUNT hits.\n\ |
15589 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15590 | If a breakpoint is hit while enabled in this fashion,\n\ |
15591 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15592 | &enablelist); |
15593 | ||
3947f654 SM |
15594 | cmd_list_element *disable_cmd |
15595 | = add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ | |
590042fc PW |
15596 | Disable all or some breakpoints.\n\ |
15597 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15598 | Arguments are breakpoint numbers with spaces in between.\n\ |
15599 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15600 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
3947f654 SM |
15601 | &disablelist, 1, &cmdlist); |
15602 | add_com_alias ("dis", disable_cmd, class_breakpoint, 1); | |
15603 | add_com_alias ("disa", disable_cmd, class_breakpoint, 1); | |
c906108c | 15604 | |
57b4f16e | 15605 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
15606 | Disable all or some breakpoints.\n\ |
15607 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15608 | Arguments are breakpoint numbers with spaces in between.\n\ |
15609 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15610 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15611 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15612 | &disablelist); |
15613 | ||
3947f654 SM |
15614 | cmd_list_element *delete_cmd |
15615 | = add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ | |
590042fc PW |
15616 | Delete all or some breakpoints.\n\ |
15617 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15618 | Arguments are breakpoint numbers with spaces in between.\n\ |
15619 | To delete all breakpoints, give no argument.\n\ | |
15620 | \n\ | |
590042fc | 15621 | Also a prefix command for deletion of other GDB objects."), |
3947f654 SM |
15622 | &deletelist, 1, &cmdlist); |
15623 | add_com_alias ("d", delete_cmd, class_breakpoint, 1); | |
15624 | add_com_alias ("del", delete_cmd, class_breakpoint, 1); | |
c906108c | 15625 | |
57b4f16e | 15626 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
15627 | Delete all or some breakpoints or auto-display expressions.\n\ |
15628 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15629 | Arguments are breakpoint numbers with spaces in between.\n\ |
15630 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15631 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15632 | &deletelist); |
15633 | ||
3947f654 SM |
15634 | cmd_list_element *clear_cmd |
15635 | = add_com ("clear", class_breakpoint, clear_command, _("\ | |
629500fa KS |
15636 | Clear breakpoint at specified location.\n\ |
15637 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15638 | \n\ |
15639 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15640 | is executing in.\n" |
89549d7f | 15641 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15642 | See also the \"delete\" command which clears breakpoints by number.")); |
3947f654 | 15643 | add_com_alias ("cl", clear_cmd, class_breakpoint, 1); |
c906108c | 15644 | |
3947f654 SM |
15645 | cmd_list_element *break_cmd |
15646 | = add_com ("break", class_breakpoint, break_command, _("\ | |
629500fa | 15647 | Set breakpoint at specified location.\n" |
31e2b00f | 15648 | BREAK_ARGS_HELP ("break"))); |
3947f654 | 15649 | set_cmd_completer (break_cmd, location_completer); |
c94fdfd0 | 15650 | |
3947f654 SM |
15651 | add_com_alias ("b", break_cmd, class_run, 1); |
15652 | add_com_alias ("br", break_cmd, class_run, 1); | |
15653 | add_com_alias ("bre", break_cmd, class_run, 1); | |
15654 | add_com_alias ("brea", break_cmd, class_run, 1); | |
c906108c | 15655 | |
c906108c SS |
15656 | if (dbx_commands) |
15657 | { | |
1bedd215 AC |
15658 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15659 | Break in function/address or break at a line in the current file."), | |
2f822da5 | 15660 | &stoplist, 1, &cmdlist); |
c5aa993b | 15661 | add_cmd ("in", class_breakpoint, stopin_command, |
1a966eab | 15662 | _("Break in function or address."), &stoplist); |
c5aa993b | 15663 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15664 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15665 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15666 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15667 | The \"Type\" column indicates one of:\n\ |
15668 | \tbreakpoint - normal breakpoint\n\ | |
15669 | \twatchpoint - watchpoint\n\ | |
15670 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15671 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15672 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15673 | address and file/line number respectively.\n\ |
15674 | \n\ | |
15675 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15676 | are set to the address of the last breakpoint listed unless the command\n\ |
15677 | is prefixed with \"server \".\n\n\ | |
c906108c | 15678 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15679 | breakpoint set.")); |
c906108c SS |
15680 | } |
15681 | ||
e0f25bd9 SM |
15682 | cmd_list_element *info_breakpoints_cmd |
15683 | = add_info ("breakpoints", info_breakpoints_command, _("\ | |
e5a67952 | 15684 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15685 | The \"Type\" column indicates one of:\n\ |
15686 | \tbreakpoint - normal breakpoint\n\ | |
15687 | \twatchpoint - watchpoint\n\ | |
15688 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15689 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15690 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15691 | address and file/line number respectively.\n\ |
15692 | \n\ | |
15693 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15694 | are set to the address of the last breakpoint listed unless the command\n\ |
15695 | is prefixed with \"server \".\n\n\ | |
c906108c | 15696 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15697 | breakpoint set.")); |
c906108c | 15698 | |
e0f25bd9 | 15699 | add_info_alias ("b", info_breakpoints_cmd, 1); |
6b04bdb7 | 15700 | |
1a966eab AC |
15701 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15702 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15703 | The \"Type\" column indicates one of:\n\ |
15704 | \tbreakpoint - normal breakpoint\n\ | |
15705 | \twatchpoint - watchpoint\n\ | |
15706 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15707 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15708 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15709 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15710 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15711 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15712 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15713 | address and file/line number respectively.\n\ |
15714 | \n\ | |
15715 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15716 | are set to the address of the last breakpoint listed unless the command\n\ |
15717 | is prefixed with \"server \".\n\n\ | |
c906108c | 15718 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15719 | breakpoint set."), |
c906108c SS |
15720 | &maintenanceinfolist); |
15721 | ||
3b6acaee | 15722 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 15723 | Set catchpoints to catch events."), |
2f822da5 | 15724 | &catch_cmdlist, |
3b6acaee | 15725 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 15726 | |
3b6acaee | 15727 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 15728 | Set temporary catchpoints to catch events."), |
2f822da5 | 15729 | &tcatch_cmdlist, |
3b6acaee | 15730 | 0/*allow-unknown*/, &cmdlist); |
44feb3ce | 15731 | |
44feb3ce TT |
15732 | add_catch_command ("fork", _("Catch calls to fork."), |
15733 | catch_fork_command_1, | |
dda83cd7 | 15734 | NULL, |
44feb3ce TT |
15735 | (void *) (uintptr_t) catch_fork_permanent, |
15736 | (void *) (uintptr_t) catch_fork_temporary); | |
15737 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15738 | catch_fork_command_1, | |
dda83cd7 | 15739 | NULL, |
44feb3ce TT |
15740 | (void *) (uintptr_t) catch_vfork_permanent, |
15741 | (void *) (uintptr_t) catch_vfork_temporary); | |
15742 | add_catch_command ("exec", _("Catch calls to exec."), | |
15743 | catch_exec_command_1, | |
dda83cd7 | 15744 | NULL, |
a96d9b2e SDJ |
15745 | CATCH_PERMANENT, |
15746 | CATCH_TEMPORARY); | |
edcc5120 TT |
15747 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15748 | Usage: catch load [REGEX]\n\ | |
15749 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15750 | catch_load_command_1, | |
15751 | NULL, | |
15752 | CATCH_PERMANENT, | |
15753 | CATCH_TEMPORARY); | |
15754 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15755 | Usage: catch unload [REGEX]\n\ | |
15756 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15757 | catch_unload_command_1, | |
15758 | NULL, | |
15759 | CATCH_PERMANENT, | |
15760 | CATCH_TEMPORARY); | |
c5aa993b | 15761 | |
a15a5258 AB |
15762 | const auto opts = make_watch_options_def_group (nullptr); |
15763 | ||
15764 | static const std::string watch_help = gdb::option::build_help (_("\ | |
15765 | Set a watchpoint for EXPRESSION.\n\ | |
15766 | Usage: watch [-location] EXPRESSION\n\ | |
15767 | \n\ | |
15768 | Options:\n\ | |
15769 | %OPTIONS%\n\ | |
15770 | \n\ | |
c906108c | 15771 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
15772 | an expression changes."), opts); |
15773 | c = add_com ("watch", class_breakpoint, watch_command, | |
15774 | watch_help.c_str ()); | |
15775 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
15776 | ||
15777 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
15778 | Set a read watchpoint for EXPRESSION.\n\ | |
15779 | Usage: rwatch [-location] EXPRESSION\n\ | |
15780 | \n\ | |
15781 | Options:\n\ | |
15782 | %OPTIONS%\n\ | |
15783 | \n\ | |
15784 | A read watchpoint stops execution of your program whenever the value of\n\ | |
15785 | an expression is read."), opts); | |
15786 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
15787 | rwatch_help.c_str ()); | |
15788 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
15789 | ||
15790 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
15791 | Set an access watchpoint for EXPRESSION.\n\ | |
15792 | Usage: awatch [-location] EXPRESSION\n\ | |
15793 | \n\ | |
15794 | Options:\n\ | |
15795 | %OPTIONS%\n\ | |
15796 | \n\ | |
15797 | An access watchpoint stops execution of your program whenever the value\n\ | |
15798 | of an expression is either read or written."), opts); | |
15799 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
15800 | awatch_help.c_str ()); | |
15801 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 15802 | |
11db9430 | 15803 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15804 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15805 | |
920d2a44 AC |
15806 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15807 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15808 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15809 | &can_use_hw_watchpoints, _("\ | |
15810 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15811 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15812 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15813 | such is available. (However, any hardware watchpoints that were\n\ | |
15814 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15815 | hardware.)"), |
15816 | NULL, | |
920d2a44 | 15817 | show_can_use_hw_watchpoints, |
85c07804 | 15818 | &setlist, &showlist); |
c906108c SS |
15819 | |
15820 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15821 | |
1042e4c0 SS |
15822 | /* Tracepoint manipulation commands. */ |
15823 | ||
3947f654 SM |
15824 | cmd_list_element *trace_cmd |
15825 | = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15826 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15827 | \n" |
15828 | BREAK_ARGS_HELP ("trace") "\n\ | |
15829 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
3947f654 | 15830 | set_cmd_completer (trace_cmd, location_completer); |
1042e4c0 | 15831 | |
3947f654 SM |
15832 | add_com_alias ("tp", trace_cmd, class_breakpoint, 0); |
15833 | add_com_alias ("tr", trace_cmd, class_breakpoint, 1); | |
15834 | add_com_alias ("tra", trace_cmd, class_breakpoint, 1); | |
15835 | add_com_alias ("trac", trace_cmd, class_breakpoint, 1); | |
1042e4c0 | 15836 | |
7a697b8d | 15837 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15838 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15839 | \n" |
15840 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15841 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15842 | set_cmd_completer (c, location_completer); | |
15843 | ||
0fb4aa4b | 15844 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15845 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15846 | \n\ |
15847 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15848 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15849 | or -m MARKER_ID.\n\n\ | |
15850 | If a marker id is specified, probe the marker with that name. With\n\ | |
15851 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15852 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15853 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15854 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15855 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15856 | \n\ | |
15857 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15858 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15859 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15860 | conditions are different.\n\ | |
0fb4aa4b PA |
15861 | \n\ |
15862 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15863 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15864 | set_cmd_completer (c, location_completer); | |
15865 | ||
e0f25bd9 SM |
15866 | cmd_list_element *info_tracepoints_cmd |
15867 | = add_info ("tracepoints", info_tracepoints_command, _("\ | |
e5a67952 | 15868 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15869 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15870 | last tracepoint set.")); | |
15871 | ||
e0f25bd9 | 15872 | add_info_alias ("tp", info_tracepoints_cmd, 1); |
1042e4c0 | 15873 | |
5e84b7ee SM |
15874 | cmd_list_element *delete_tracepoints_cmd |
15875 | = add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
1042e4c0 SS |
15876 | Delete specified tracepoints.\n\ |
15877 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15878 | No argument means delete all tracepoints."), | |
15879 | &deletelist); | |
5e84b7ee | 15880 | add_alias_cmd ("tr", delete_tracepoints_cmd, class_trace, 1, &deletelist); |
1042e4c0 SS |
15881 | |
15882 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15883 | Disable specified tracepoints.\n\ | |
15884 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15885 | No argument means disable all tracepoints."), | |
15886 | &disablelist); | |
15887 | deprecate_cmd (c, "disable"); | |
15888 | ||
15889 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15890 | Enable specified tracepoints.\n\ | |
15891 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15892 | No argument means enable all tracepoints."), | |
15893 | &enablelist); | |
15894 | deprecate_cmd (c, "enable"); | |
15895 | ||
15896 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15897 | Set the passcount for a tracepoint.\n\ | |
15898 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15899 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15900 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15901 | ||
0743fc83 TT |
15902 | add_basic_prefix_cmd ("save", class_breakpoint, |
15903 | _("Save breakpoint definitions as a script."), | |
2f822da5 | 15904 | &save_cmdlist, |
0743fc83 | 15905 | 0/*allow-unknown*/, &cmdlist); |
6149aea9 PA |
15906 | |
15907 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15908 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15909 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15910 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15911 | session to restore them."), | |
15912 | &save_cmdlist); | |
15913 | set_cmd_completer (c, filename_completer); | |
15914 | ||
3947f654 SM |
15915 | cmd_list_element *save_tracepoints_cmd |
15916 | = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15917 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15918 | Use the 'source' command in another debug session to restore them."), |
15919 | &save_cmdlist); | |
3947f654 | 15920 | set_cmd_completer (save_tracepoints_cmd, filename_completer); |
1042e4c0 | 15921 | |
3947f654 | 15922 | c = add_com_alias ("save-tracepoints", save_tracepoints_cmd, class_trace, 0); |
6149aea9 PA |
15923 | deprecate_cmd (c, "save tracepoints"); |
15924 | ||
3b6acaee | 15925 | add_basic_prefix_cmd ("breakpoint", class_maintenance, _("\ |
590042fc | 15926 | Breakpoint specific settings.\n\ |
fa8d40ab | 15927 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15928 | pending breakpoint behavior."), |
2f822da5 | 15929 | &breakpoint_set_cmdlist, |
3b6acaee TT |
15930 | 0/*allow-unknown*/, &setlist); |
15931 | add_show_prefix_cmd ("breakpoint", class_maintenance, _("\ | |
590042fc | 15932 | Breakpoint specific settings.\n\ |
fa8d40ab | 15933 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15934 | pending breakpoint behavior."), |
2f822da5 | 15935 | &breakpoint_show_cmdlist, |
3b6acaee | 15936 | 0/*allow-unknown*/, &showlist); |
fa8d40ab | 15937 | |
7915a72c AC |
15938 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15939 | &pending_break_support, _("\ | |
15940 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15941 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15942 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15943 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15944 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15945 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15946 | NULL, |
920d2a44 | 15947 | show_pending_break_support, |
6e1d7d6c AC |
15948 | &breakpoint_set_cmdlist, |
15949 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15950 | |
15951 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15952 | |
15953 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15954 | &automatic_hardware_breakpoints, _("\ | |
15955 | Set automatic usage of hardware breakpoints."), _("\ | |
15956 | Show automatic usage of hardware breakpoints."), _("\ | |
15957 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15958 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15959 | a warning will be emitted for such breakpoints."), | |
15960 | NULL, | |
15961 | show_automatic_hardware_breakpoints, | |
15962 | &breakpoint_set_cmdlist, | |
15963 | &breakpoint_show_cmdlist); | |
74960c60 | 15964 | |
a25a5a45 PA |
15965 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15966 | &always_inserted_mode, _("\ | |
74960c60 VP |
15967 | Set mode for inserting breakpoints."), _("\ |
15968 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15969 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15970 | they're created, kept inserted even when execution stops, and removed\n\ | |
15971 | only when the user deletes them. When this mode is off (the default),\n\ | |
15972 | breakpoints are inserted only when execution continues, and removed\n\ | |
15973 | when execution stops."), | |
72d0e2c5 YQ |
15974 | NULL, |
15975 | &show_always_inserted_mode, | |
15976 | &breakpoint_set_cmdlist, | |
15977 | &breakpoint_show_cmdlist); | |
f1310107 | 15978 | |
b775012e LM |
15979 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15980 | condition_evaluation_enums, | |
15981 | &condition_evaluation_mode_1, _("\ | |
15982 | Set mode of breakpoint condition evaluation."), _("\ | |
15983 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15984 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15985 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15986 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15987 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15988 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15989 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 15990 | be set to \"host\"."), |
b775012e LM |
15991 | &set_condition_evaluation_mode, |
15992 | &show_condition_evaluation_mode, | |
15993 | &breakpoint_set_cmdlist, | |
15994 | &breakpoint_show_cmdlist); | |
15995 | ||
f1310107 TJB |
15996 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15997 | Set a breakpoint for an address range.\n\ | |
15998 | break-range START-LOCATION, END-LOCATION\n\ | |
15999 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16000 | LINENUM, for that line in the current file,\n\ | |
16001 | FILE:LINENUM, for that line in that file,\n\ | |
16002 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 16003 | or the start of the range\n\ |
f1310107 TJB |
16004 | FUNCTION, for the first line in that function,\n\ |
16005 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16006 | *ADDRESS, for the instruction at that address.\n\ | |
16007 | \n\ | |
16008 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16009 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16010 | range (including START-LOCATION and END-LOCATION).")); | |
16011 | ||
e7e0cddf | 16012 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16013 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16014 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16015 | location may be a linespec, explicit, or address location.\n" |
16016 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16017 | set_cmd_completer (c, location_completer); |
16018 | ||
16019 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16020 | dprintf_style_enums, &dprintf_style, _("\ | |
16021 | Set the style of usage for dynamic printf."), _("\ | |
16022 | Show the style of usage for dynamic printf."), _("\ | |
16023 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16024 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16025 | console, as with the \"printf\" command.\n\ | |
16026 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16027 | program; by default printf(), but you can choose a different function or\n\ | |
16028 | output stream by setting dprintf-function and dprintf-channel."), | |
16029 | update_dprintf_commands, NULL, | |
16030 | &setlist, &showlist); | |
16031 | ||
16032 | dprintf_function = xstrdup ("printf"); | |
16033 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16034 | &dprintf_function, _("\ | |
590042fc PW |
16035 | Set the function to use for dynamic printf."), _("\ |
16036 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
16037 | update_dprintf_commands, NULL, |
16038 | &setlist, &showlist); | |
16039 | ||
16040 | dprintf_channel = xstrdup (""); | |
16041 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16042 | &dprintf_channel, _("\ | |
590042fc PW |
16043 | Set the channel to use for dynamic printf."), _("\ |
16044 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
16045 | update_dprintf_commands, NULL, |
16046 | &setlist, &showlist); | |
16047 | ||
d3ce09f5 SS |
16048 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16049 | &disconnected_dprintf, _("\ | |
16050 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16051 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16052 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16053 | even if GDB disconnects or detaches from the target."), | |
16054 | NULL, | |
16055 | NULL, | |
16056 | &setlist, &showlist); | |
16057 | ||
16058 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
16059 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
16060 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
16061 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
16062 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 16063 | |
491144b5 | 16064 | automatic_hardware_breakpoints = true; |
f3b1572e | 16065 | |
c90e7d63 SM |
16066 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed, |
16067 | "breakpoint"); | |
16068 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints, | |
16069 | "breakpoint"); | |
c906108c | 16070 | } |