Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
b811d2c2 | 3 | Copyright (C) 1986-2020 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
d55e5aa6 | 21 | #include "arch-utils.h" |
4de283e4 TT |
22 | #include <ctype.h> |
23 | #include "hashtab.h" | |
24 | #include "symtab.h" | |
25 | #include "frame.h" | |
c906108c | 26 | #include "breakpoint.h" |
4de283e4 TT |
27 | #include "tracepoint.h" |
28 | #include "gdbtypes.h" | |
c906108c | 29 | #include "expression.h" |
d55e5aa6 | 30 | #include "gdbcore.h" |
4de283e4 TT |
31 | #include "gdbcmd.h" |
32 | #include "value.h" | |
33 | #include "command.h" | |
c906108c | 34 | #include "inferior.h" |
45741a9c | 35 | #include "infrun.h" |
4de283e4 TT |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
c906108c | 38 | #include "language.h" |
4de283e4 TT |
39 | #include "gdb-demangle.h" |
40 | #include "filenames.h" | |
41 | #include "annotate.h" | |
42 | #include "symfile.h" | |
d55e5aa6 | 43 | #include "objfiles.h" |
4de283e4 TT |
44 | #include "source.h" |
45 | #include "linespec.h" | |
46 | #include "completer.h" | |
47 | #include "ui-out.h" | |
48 | #include "cli/cli-script.h" | |
49 | #include "block.h" | |
50 | #include "solib.h" | |
51 | #include "solist.h" | |
d55e5aa6 | 52 | #include "observable.h" |
4de283e4 TT |
53 | #include "memattr.h" |
54 | #include "ada-lang.h" | |
55 | #include "top.h" | |
56 | #include "valprint.h" | |
57 | #include "jit.h" | |
65d79d4b | 58 | #include "parser-defs.h" |
4de283e4 | 59 | #include "gdb_regex.h" |
55aa24fb | 60 | #include "probe.h" |
4de283e4 | 61 | #include "cli/cli-utils.h" |
d55e5aa6 | 62 | #include "stack.h" |
4de283e4 TT |
63 | #include "ax-gdb.h" |
64 | #include "dummy-frame.h" | |
65 | #include "interps.h" | |
268a13a5 | 66 | #include "gdbsupport/format.h" |
cfc31633 | 67 | #include "thread-fsm.h" |
5d5658a1 | 68 | #include "tid-parse.h" |
4de283e4 | 69 | #include "cli/cli-style.h" |
d3ce09f5 | 70 | |
1042e4c0 | 71 | /* readline include files */ |
073bbbb0 | 72 | #include "readline/tilde.h" |
1042e4c0 SS |
73 | |
74 | /* readline defines this. */ | |
75 | #undef savestring | |
76 | ||
034dad6f | 77 | #include "mi/mi-common.h" |
6dddc817 | 78 | #include "extension.h" |
325fac50 | 79 | #include <algorithm> |
5ed8105e | 80 | #include "progspace-and-thread.h" |
268a13a5 TT |
81 | #include "gdbsupport/array-view.h" |
82 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 83 | |
4a64f543 | 84 | /* Prototypes for local functions. */ |
c906108c | 85 | |
896b6bda | 86 | static void map_breakpoint_numbers (const char *, |
48649e1b | 87 | gdb::function_view<void (breakpoint *)>); |
c906108c | 88 | |
348d480f PA |
89 | static void breakpoint_re_set_default (struct breakpoint *); |
90 | ||
f00aae0f | 91 | static void |
626d2320 | 92 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
93 | struct linespec_result *canonical, |
94 | enum bptype type_wanted); | |
983af33b SDJ |
95 | |
96 | static void create_breakpoints_sal_default (struct gdbarch *, | |
97 | struct linespec_result *, | |
e1e01040 PA |
98 | gdb::unique_xmalloc_ptr<char>, |
99 | gdb::unique_xmalloc_ptr<char>, | |
100 | enum bptype, | |
983af33b SDJ |
101 | enum bpdisp, int, int, |
102 | int, | |
103 | const struct breakpoint_ops *, | |
44f238bb | 104 | int, int, int, unsigned); |
983af33b | 105 | |
6c5b2ebe | 106 | static std::vector<symtab_and_line> decode_location_default |
626d2320 | 107 | (struct breakpoint *b, struct event_location *location, |
6c5b2ebe | 108 | struct program_space *search_pspace); |
983af33b | 109 | |
a6535de1 TT |
110 | static int can_use_hardware_watchpoint |
111 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 112 | |
a14ed312 | 113 | static void mention (struct breakpoint *); |
c906108c | 114 | |
348d480f PA |
115 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
116 | enum bptype, | |
c0a91b2b | 117 | const struct breakpoint_ops *); |
3742cc8b YQ |
118 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
119 | const struct symtab_and_line *); | |
120 | ||
4a64f543 MS |
121 | /* This function is used in gdbtk sources and thus can not be made |
122 | static. */ | |
63c252f8 | 123 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 124 | struct symtab_and_line, |
c0a91b2b TT |
125 | enum bptype, |
126 | const struct breakpoint_ops *); | |
c906108c | 127 | |
06edf0c0 PA |
128 | static struct breakpoint * |
129 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
130 | enum bptype type, | |
a1aa2221 LM |
131 | const struct breakpoint_ops *ops, |
132 | int loc_enabled); | |
06edf0c0 | 133 | |
76897487 KB |
134 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
135 | ||
a6d9a66e UW |
136 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
137 | CORE_ADDR bpaddr, | |
dda83cd7 | 138 | enum bptype bptype); |
76897487 | 139 | |
6c95b8df PA |
140 | static void describe_other_breakpoints (struct gdbarch *, |
141 | struct program_space *, CORE_ADDR, | |
5af949e3 | 142 | struct obj_section *, int); |
c906108c | 143 | |
85d721b8 PA |
144 | static int watchpoint_locations_match (struct bp_location *loc1, |
145 | struct bp_location *loc2); | |
146 | ||
7f32a4d5 PA |
147 | static int breakpoint_locations_match (struct bp_location *loc1, |
148 | struct bp_location *loc2, | |
149 | bool sw_hw_bps_match = false); | |
150 | ||
f1310107 | 151 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 152 | const struct address_space *aspace, |
f1310107 TJB |
153 | CORE_ADDR addr); |
154 | ||
d35ae833 | 155 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 156 | const address_space *, |
d35ae833 PA |
157 | CORE_ADDR, int); |
158 | ||
834c0d03 | 159 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 160 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 161 | |
e514a9d6 | 162 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 163 | |
a14ed312 | 164 | static int hw_breakpoint_used_count (void); |
c906108c | 165 | |
a1398e0c PA |
166 | static int hw_watchpoint_use_count (struct breakpoint *); |
167 | ||
168 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
169 | enum bptype type, | |
170 | int *other_type_used); | |
c906108c | 171 | |
816338b5 SS |
172 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
173 | int count); | |
c906108c | 174 | |
f431efe5 | 175 | static void decref_bp_location (struct bp_location **loc); |
fe3f5fa8 | 176 | |
39d61571 | 177 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 178 | |
44702360 PA |
179 | /* update_global_location_list's modes of operation wrt to whether to |
180 | insert locations now. */ | |
181 | enum ugll_insert_mode | |
182 | { | |
183 | /* Don't insert any breakpoint locations into the inferior, only | |
184 | remove already-inserted locations that no longer should be | |
185 | inserted. Functions that delete a breakpoint or breakpoints | |
186 | should specify this mode, so that deleting a breakpoint doesn't | |
187 | have the side effect of inserting the locations of other | |
188 | breakpoints that are marked not-inserted, but should_be_inserted | |
189 | returns true on them. | |
190 | ||
191 | This behavior is useful is situations close to tear-down -- e.g., | |
192 | after an exec, while the target still has execution, but | |
193 | breakpoint shadows of the previous executable image should *NOT* | |
194 | be restored to the new image; or before detaching, where the | |
195 | target still has execution and wants to delete breakpoints from | |
196 | GDB's lists, and all breakpoints had already been removed from | |
197 | the inferior. */ | |
198 | UGLL_DONT_INSERT, | |
199 | ||
a25a5a45 PA |
200 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
201 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
202 | UGLL_MAY_INSERT, |
203 | ||
a25a5a45 PA |
204 | /* Insert locations now, irrespective of |
205 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
206 | stopped right now, and the user did "continue". We need to | |
207 | insert breakpoints _before_ resuming the target, but | |
208 | UGLL_MAY_INSERT wouldn't insert them, because | |
209 | breakpoints_should_be_inserted_now returns false at that point, | |
210 | as no thread is running yet. */ | |
04086b45 | 211 | UGLL_INSERT |
44702360 PA |
212 | }; |
213 | ||
214 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 215 | |
44702360 | 216 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 217 | |
74960c60 | 218 | static void insert_breakpoint_locations (void); |
a5606eee | 219 | |
0b39b52e | 220 | static void trace_pass_command (const char *, int); |
1042e4c0 | 221 | |
558a9d82 YQ |
222 | static void set_tracepoint_count (int num); |
223 | ||
f2478a7e | 224 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 225 | |
b775012e LM |
226 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
227 | ||
983af33b SDJ |
228 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
229 | otherwise. */ | |
230 | ||
231 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 232 | |
2060206e PA |
233 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
234 | that are implemented on top of software or hardware breakpoints | |
235 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
236 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
237 | ||
238 | /* Internal breakpoints class type. */ | |
06edf0c0 | 239 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
240 | |
241 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
242 | static struct breakpoint_ops momentary_breakpoint_ops; |
243 | ||
2060206e PA |
244 | /* The breakpoint_ops structure to be used in regular user created |
245 | breakpoints. */ | |
246 | struct breakpoint_ops bkpt_breakpoint_ops; | |
247 | ||
55aa24fb SDJ |
248 | /* Breakpoints set on probes. */ |
249 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
250 | ||
bac7c5cf GB |
251 | /* Tracepoints set on probes. */ |
252 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
253 | ||
e7e0cddf | 254 | /* Dynamic printf class type. */ |
c5867ab6 | 255 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 256 | |
d3ce09f5 SS |
257 | /* The style in which to perform a dynamic printf. This is a user |
258 | option because different output options have different tradeoffs; | |
259 | if GDB does the printing, there is better error handling if there | |
260 | is a problem with any of the arguments, but using an inferior | |
261 | function lets you have special-purpose printers and sending of | |
262 | output to the same place as compiled-in print functions. */ | |
263 | ||
264 | static const char dprintf_style_gdb[] = "gdb"; | |
265 | static const char dprintf_style_call[] = "call"; | |
266 | static const char dprintf_style_agent[] = "agent"; | |
267 | static const char *const dprintf_style_enums[] = { | |
268 | dprintf_style_gdb, | |
269 | dprintf_style_call, | |
270 | dprintf_style_agent, | |
271 | NULL | |
272 | }; | |
273 | static const char *dprintf_style = dprintf_style_gdb; | |
274 | ||
275 | /* The function to use for dynamic printf if the preferred style is to | |
276 | call into the inferior. The value is simply a string that is | |
277 | copied into the command, so it can be anything that GDB can | |
278 | evaluate to a callable address, not necessarily a function name. */ | |
279 | ||
bde6261a | 280 | static char *dprintf_function; |
d3ce09f5 SS |
281 | |
282 | /* The channel to use for dynamic printf if the preferred style is to | |
283 | call into the inferior; if a nonempty string, it will be passed to | |
284 | the call as the first argument, with the format string as the | |
285 | second. As with the dprintf function, this can be anything that | |
286 | GDB knows how to evaluate, so in addition to common choices like | |
287 | "stderr", this could be an app-specific expression like | |
288 | "mystreams[curlogger]". */ | |
289 | ||
bde6261a | 290 | static char *dprintf_channel; |
d3ce09f5 SS |
291 | |
292 | /* True if dprintf commands should continue to operate even if GDB | |
293 | has disconnected. */ | |
491144b5 | 294 | static bool disconnected_dprintf = true; |
d3ce09f5 | 295 | |
5cea2a26 PA |
296 | struct command_line * |
297 | breakpoint_commands (struct breakpoint *b) | |
298 | { | |
d1b0a7bf | 299 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 300 | } |
3daf8fe5 | 301 | |
f3b1572e PA |
302 | /* Flag indicating that a command has proceeded the inferior past the |
303 | current breakpoint. */ | |
304 | ||
491144b5 | 305 | static bool breakpoint_proceeded; |
f3b1572e | 306 | |
956a9fb9 | 307 | const char * |
2cec12e5 AR |
308 | bpdisp_text (enum bpdisp disp) |
309 | { | |
4a64f543 MS |
310 | /* NOTE: the following values are a part of MI protocol and |
311 | represent values of 'disp' field returned when inferior stops at | |
312 | a breakpoint. */ | |
bc043ef3 | 313 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 314 | |
2cec12e5 AR |
315 | return bpdisps[(int) disp]; |
316 | } | |
c906108c | 317 | |
4a64f543 | 318 | /* Prototypes for exported functions. */ |
c906108c | 319 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 320 | if such is available. */ |
c906108c SS |
321 | static int can_use_hw_watchpoints; |
322 | ||
920d2a44 AC |
323 | static void |
324 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
325 | struct cmd_list_element *c, | |
326 | const char *value) | |
327 | { | |
3e43a32a MS |
328 | fprintf_filtered (file, |
329 | _("Debugger's willingness to use " | |
330 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
331 | value); |
332 | } | |
333 | ||
fa8d40ab JJ |
334 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
335 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 336 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
337 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
338 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
339 | static void |
340 | show_pending_break_support (struct ui_file *file, int from_tty, | |
341 | struct cmd_list_element *c, | |
342 | const char *value) | |
343 | { | |
3e43a32a MS |
344 | fprintf_filtered (file, |
345 | _("Debugger's behavior regarding " | |
346 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
347 | value); |
348 | } | |
fa8d40ab | 349 | |
491144b5 | 350 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 351 | set with "break" but falling in read-only memory. |
491144b5 | 352 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 353 | use hardware breakpoints. */ |
491144b5 | 354 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
355 | static void |
356 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
357 | struct cmd_list_element *c, | |
358 | const char *value) | |
359 | { | |
3e43a32a MS |
360 | fprintf_filtered (file, |
361 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
362 | value); |
363 | } | |
364 | ||
a25a5a45 PA |
365 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
366 | stopped, and immediately inserts any new breakpoints as soon as | |
367 | they're created. If off (default), GDB keeps breakpoints off of | |
368 | the target as long as possible. That is, it delays inserting | |
369 | breakpoints until the next resume, and removes them again when the | |
370 | target fully stops. This is a bit safer in case GDB crashes while | |
371 | processing user input. */ | |
491144b5 | 372 | static bool always_inserted_mode = false; |
72d0e2c5 | 373 | |
33e5cbd6 | 374 | static void |
74960c60 | 375 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 376 | struct cmd_list_element *c, const char *value) |
74960c60 | 377 | { |
a25a5a45 PA |
378 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
379 | value); | |
74960c60 VP |
380 | } |
381 | ||
b57bacec PA |
382 | /* See breakpoint.h. */ |
383 | ||
33e5cbd6 | 384 | int |
a25a5a45 | 385 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 386 | { |
a25a5a45 PA |
387 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
388 | { | |
389 | /* If breakpoints are global, they should be inserted even if no | |
390 | thread under gdb's control is running, or even if there are | |
391 | no threads under GDB's control yet. */ | |
392 | return 1; | |
393 | } | |
5b6d1e4f | 394 | else |
a25a5a45 | 395 | { |
a25a5a45 PA |
396 | if (always_inserted_mode) |
397 | { | |
398 | /* The user wants breakpoints inserted even if all threads | |
399 | are stopped. */ | |
400 | return 1; | |
401 | } | |
402 | ||
5b6d1e4f PA |
403 | for (inferior *inf : all_inferiors ()) |
404 | if (inf->has_execution () | |
405 | && threads_are_executing (inf->process_target ())) | |
406 | return 1; | |
372316f1 PA |
407 | |
408 | /* Don't remove breakpoints yet if, even though all threads are | |
409 | stopped, we still have events to process. */ | |
08036331 | 410 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
411 | if (tp->resumed |
412 | && tp->suspend.waitstatus_pending_p) | |
413 | return 1; | |
a25a5a45 PA |
414 | } |
415 | return 0; | |
33e5cbd6 | 416 | } |
765dc015 | 417 | |
b775012e LM |
418 | static const char condition_evaluation_both[] = "host or target"; |
419 | ||
420 | /* Modes for breakpoint condition evaluation. */ | |
421 | static const char condition_evaluation_auto[] = "auto"; | |
422 | static const char condition_evaluation_host[] = "host"; | |
423 | static const char condition_evaluation_target[] = "target"; | |
424 | static const char *const condition_evaluation_enums[] = { | |
425 | condition_evaluation_auto, | |
426 | condition_evaluation_host, | |
427 | condition_evaluation_target, | |
428 | NULL | |
429 | }; | |
430 | ||
431 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
432 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
433 | ||
434 | /* Global that we use to display information to the user (gets its value from | |
435 | condition_evaluation_mode_1. */ | |
436 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
437 | ||
438 | /* Translate a condition evaluation mode MODE into either "host" | |
439 | or "target". This is used mostly to translate from "auto" to the | |
440 | real setting that is being used. It returns the translated | |
441 | evaluation mode. */ | |
442 | ||
443 | static const char * | |
444 | translate_condition_evaluation_mode (const char *mode) | |
445 | { | |
446 | if (mode == condition_evaluation_auto) | |
447 | { | |
448 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
449 | return condition_evaluation_target; | |
450 | else | |
451 | return condition_evaluation_host; | |
452 | } | |
453 | else | |
454 | return mode; | |
455 | } | |
456 | ||
457 | /* Discovers what condition_evaluation_auto translates to. */ | |
458 | ||
459 | static const char * | |
460 | breakpoint_condition_evaluation_mode (void) | |
461 | { | |
462 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
463 | } | |
464 | ||
465 | /* Return true if GDB should evaluate breakpoint conditions or false | |
466 | otherwise. */ | |
467 | ||
468 | static int | |
469 | gdb_evaluates_breakpoint_condition_p (void) | |
470 | { | |
471 | const char *mode = breakpoint_condition_evaluation_mode (); | |
472 | ||
473 | return (mode == condition_evaluation_host); | |
474 | } | |
475 | ||
c906108c SS |
476 | /* Are we executing breakpoint commands? */ |
477 | static int executing_breakpoint_commands; | |
478 | ||
c02f5703 MS |
479 | /* Are overlay event breakpoints enabled? */ |
480 | static int overlay_events_enabled; | |
481 | ||
e09342b5 | 482 | /* See description in breakpoint.h. */ |
491144b5 | 483 | bool target_exact_watchpoints = false; |
e09342b5 | 484 | |
c906108c | 485 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 486 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 487 | current breakpoint. */ |
c906108c | 488 | |
5c44784c | 489 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 490 | |
5c44784c JM |
491 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
492 | for (B = breakpoint_chain; \ | |
493 | B ? (TMP=B->next, 1): 0; \ | |
494 | B = TMP) | |
c906108c | 495 | |
4a64f543 MS |
496 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
497 | not provided so update_global_location_list must not be called | |
498 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 499 | |
876fa593 | 500 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
501 | for (BP_TMP = bp_locations; \ |
502 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 503 | BP_TMP++) |
7cc221ef | 504 | |
b775012e LM |
505 | /* Iterates through locations with address ADDRESS for the currently selected |
506 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
507 | to where the loop should start from. | |
508 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
509 | appropriate location to start with. */ | |
510 | ||
511 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
512 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
513 | BP_LOCP_TMP = BP_LOCP_START; \ | |
514 | BP_LOCP_START \ | |
f5336ca5 | 515 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
516 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
517 | BP_LOCP_TMP++) | |
518 | ||
1042e4c0 SS |
519 | /* Iterator for tracepoints only. */ |
520 | ||
521 | #define ALL_TRACEPOINTS(B) \ | |
522 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 523 | if (is_tracepoint (B)) |
1042e4c0 | 524 | |
7cc221ef | 525 | /* Chains of all breakpoints defined. */ |
c906108c | 526 | |
81e6b8eb | 527 | static struct breakpoint *breakpoint_chain; |
c906108c | 528 | |
39ef2f62 | 529 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 530 | |
f5336ca5 | 531 | static struct bp_location **bp_locations; |
876fa593 | 532 | |
f5336ca5 | 533 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 534 | |
f5336ca5 | 535 | static unsigned bp_locations_count; |
876fa593 | 536 | |
4a64f543 | 537 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 538 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 539 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 540 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 541 | an address you need to read. */ |
876fa593 | 542 | |
f5336ca5 | 543 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 544 | |
4a64f543 MS |
545 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
546 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
547 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
548 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 549 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 550 | |
f5336ca5 | 551 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 552 | |
4a64f543 | 553 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
554 | from the bp_locations array, but for which a hit may still be |
555 | reported by a target. */ | |
1123588c | 556 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 557 | |
c906108c SS |
558 | /* Number of last breakpoint made. */ |
559 | ||
95a42b64 TT |
560 | static int breakpoint_count; |
561 | ||
86b17b60 PA |
562 | /* The value of `breakpoint_count' before the last command that |
563 | created breakpoints. If the last (break-like) command created more | |
564 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
565 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
566 | static int prev_breakpoint_count; | |
c906108c | 567 | |
1042e4c0 SS |
568 | /* Number of last tracepoint made. */ |
569 | ||
95a42b64 | 570 | static int tracepoint_count; |
1042e4c0 | 571 | |
6149aea9 PA |
572 | static struct cmd_list_element *breakpoint_set_cmdlist; |
573 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 574 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 575 | |
badd37ce SDJ |
576 | /* See declaration at breakpoint.h. */ |
577 | ||
578 | struct breakpoint * | |
579 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
580 | void *user_data) | |
581 | { | |
582 | struct breakpoint *b = NULL; | |
583 | ||
584 | ALL_BREAKPOINTS (b) | |
585 | { | |
586 | if (func (b, user_data) != 0) | |
587 | break; | |
588 | } | |
589 | ||
590 | return b; | |
591 | } | |
592 | ||
468d015d JJ |
593 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
594 | static int | |
595 | breakpoint_enabled (struct breakpoint *b) | |
596 | { | |
0d381245 | 597 | return (b->enable_state == bp_enabled); |
468d015d JJ |
598 | } |
599 | ||
c906108c SS |
600 | /* Set breakpoint count to NUM. */ |
601 | ||
95a42b64 | 602 | static void |
fba45db2 | 603 | set_breakpoint_count (int num) |
c906108c | 604 | { |
86b17b60 | 605 | prev_breakpoint_count = breakpoint_count; |
c906108c | 606 | breakpoint_count = num; |
4fa62494 | 607 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
608 | } |
609 | ||
86b17b60 PA |
610 | /* Used by `start_rbreak_breakpoints' below, to record the current |
611 | breakpoint count before "rbreak" creates any breakpoint. */ | |
612 | static int rbreak_start_breakpoint_count; | |
613 | ||
95a42b64 TT |
614 | /* Called at the start an "rbreak" command to record the first |
615 | breakpoint made. */ | |
86b17b60 | 616 | |
c80049d3 | 617 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 618 | { |
86b17b60 | 619 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
620 | } |
621 | ||
622 | /* Called at the end of an "rbreak" command to record the last | |
623 | breakpoint made. */ | |
86b17b60 | 624 | |
c80049d3 | 625 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 626 | { |
86b17b60 | 627 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
628 | } |
629 | ||
4a64f543 | 630 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
631 | |
632 | void | |
fba45db2 | 633 | clear_breakpoint_hit_counts (void) |
c906108c SS |
634 | { |
635 | struct breakpoint *b; | |
636 | ||
637 | ALL_BREAKPOINTS (b) | |
638 | b->hit_count = 0; | |
639 | } | |
640 | ||
c906108c | 641 | \f |
48cb2d85 VP |
642 | /* Return the breakpoint with the specified number, or NULL |
643 | if the number does not refer to an existing breakpoint. */ | |
644 | ||
645 | struct breakpoint * | |
646 | get_breakpoint (int num) | |
647 | { | |
648 | struct breakpoint *b; | |
649 | ||
650 | ALL_BREAKPOINTS (b) | |
651 | if (b->number == num) | |
652 | return b; | |
653 | ||
654 | return NULL; | |
655 | } | |
5c44784c | 656 | |
c906108c | 657 | \f |
adc36818 | 658 | |
b775012e LM |
659 | /* Mark locations as "conditions have changed" in case the target supports |
660 | evaluating conditions on its side. */ | |
661 | ||
662 | static void | |
663 | mark_breakpoint_modified (struct breakpoint *b) | |
664 | { | |
665 | struct bp_location *loc; | |
666 | ||
667 | /* This is only meaningful if the target is | |
668 | evaluating conditions and if the user has | |
669 | opted for condition evaluation on the target's | |
670 | side. */ | |
671 | if (gdb_evaluates_breakpoint_condition_p () | |
672 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
673 | return; | |
674 | ||
675 | if (!is_breakpoint (b)) | |
676 | return; | |
677 | ||
678 | for (loc = b->loc; loc; loc = loc->next) | |
679 | loc->condition_changed = condition_modified; | |
680 | } | |
681 | ||
682 | /* Mark location as "conditions have changed" in case the target supports | |
683 | evaluating conditions on its side. */ | |
684 | ||
685 | static void | |
686 | mark_breakpoint_location_modified (struct bp_location *loc) | |
687 | { | |
688 | /* This is only meaningful if the target is | |
689 | evaluating conditions and if the user has | |
690 | opted for condition evaluation on the target's | |
691 | side. */ | |
692 | if (gdb_evaluates_breakpoint_condition_p () | |
693 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
694 | ||
695 | return; | |
696 | ||
697 | if (!is_breakpoint (loc->owner)) | |
698 | return; | |
699 | ||
700 | loc->condition_changed = condition_modified; | |
701 | } | |
702 | ||
703 | /* Sets the condition-evaluation mode using the static global | |
704 | condition_evaluation_mode. */ | |
705 | ||
706 | static void | |
eb4c3f4a | 707 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
708 | struct cmd_list_element *c) |
709 | { | |
b775012e LM |
710 | const char *old_mode, *new_mode; |
711 | ||
712 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
713 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
714 | { | |
715 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
716 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
717 | "Using host evaluation mode instead.")); | |
718 | return; | |
719 | } | |
720 | ||
721 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
722 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
723 | ||
abf1152a JK |
724 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
725 | settings was "auto". */ | |
726 | condition_evaluation_mode = condition_evaluation_mode_1; | |
727 | ||
b775012e LM |
728 | /* Only update the mode if the user picked a different one. */ |
729 | if (new_mode != old_mode) | |
730 | { | |
731 | struct bp_location *loc, **loc_tmp; | |
732 | /* If the user switched to a different evaluation mode, we | |
733 | need to synch the changes with the target as follows: | |
734 | ||
735 | "host" -> "target": Send all (valid) conditions to the target. | |
736 | "target" -> "host": Remove all the conditions from the target. | |
737 | */ | |
738 | ||
b775012e LM |
739 | if (new_mode == condition_evaluation_target) |
740 | { | |
741 | /* Mark everything modified and synch conditions with the | |
742 | target. */ | |
743 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
744 | mark_breakpoint_location_modified (loc); | |
745 | } | |
746 | else | |
747 | { | |
748 | /* Manually mark non-duplicate locations to synch conditions | |
749 | with the target. We do this to remove all the conditions the | |
750 | target knows about. */ | |
751 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
752 | if (is_breakpoint (loc->owner) && loc->inserted) | |
753 | loc->needs_update = 1; | |
754 | } | |
755 | ||
756 | /* Do the update. */ | |
44702360 | 757 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
758 | } |
759 | ||
760 | return; | |
761 | } | |
762 | ||
763 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
764 | what "auto" is translating to. */ | |
765 | ||
766 | static void | |
767 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
768 | struct cmd_list_element *c, const char *value) | |
769 | { | |
770 | if (condition_evaluation_mode == condition_evaluation_auto) | |
771 | fprintf_filtered (file, | |
772 | _("Breakpoint condition evaluation " | |
773 | "mode is %s (currently %s).\n"), | |
774 | value, | |
775 | breakpoint_condition_evaluation_mode ()); | |
776 | else | |
777 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
778 | value); | |
779 | } | |
780 | ||
781 | /* A comparison function for bp_location AP and BP that is used by | |
782 | bsearch. This comparison function only cares about addresses, unlike | |
39ef2f62 | 783 | the more general bp_location_is_less_than function. */ |
b775012e LM |
784 | |
785 | static int | |
f5336ca5 | 786 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 787 | { |
9a3c8263 SM |
788 | const struct bp_location *a = *(const struct bp_location **) ap; |
789 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
790 | |
791 | if (a->address == b->address) | |
792 | return 0; | |
793 | else | |
794 | return ((a->address > b->address) - (a->address < b->address)); | |
795 | } | |
796 | ||
797 | /* Helper function to skip all bp_locations with addresses | |
798 | less than ADDRESS. It returns the first bp_location that | |
799 | is greater than or equal to ADDRESS. If none is found, just | |
800 | return NULL. */ | |
801 | ||
802 | static struct bp_location ** | |
803 | get_first_locp_gte_addr (CORE_ADDR address) | |
804 | { | |
805 | struct bp_location dummy_loc; | |
806 | struct bp_location *dummy_locp = &dummy_loc; | |
807 | struct bp_location **locp_found = NULL; | |
808 | ||
809 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
810 | dummy_loc.address = address; |
811 | ||
812 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 813 | locp_found = ((struct bp_location **) |
f5336ca5 | 814 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 815 | sizeof (struct bp_location **), |
f5336ca5 | 816 | bp_locations_compare_addrs)); |
b775012e LM |
817 | |
818 | /* Nothing was found, nothing left to do. */ | |
819 | if (locp_found == NULL) | |
820 | return NULL; | |
821 | ||
822 | /* We may have found a location that is at ADDRESS but is not the first in the | |
823 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 824 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
825 | && (*(locp_found - 1))->address == address) |
826 | locp_found--; | |
827 | ||
828 | return locp_found; | |
829 | } | |
830 | ||
b5fa468f TBA |
831 | /* Parse COND_STRING in the context of LOC and set as the condition |
832 | expression of LOC. BP_NUM is the number of LOC's owner, LOC_NUM is | |
833 | the number of LOC within its owner. In case of parsing error, mark | |
834 | LOC as DISABLED_BY_COND. In case of success, unset DISABLED_BY_COND. */ | |
835 | ||
836 | static void | |
837 | set_breakpoint_location_condition (const char *cond_string, bp_location *loc, | |
838 | int bp_num, int loc_num) | |
839 | { | |
840 | bool has_junk = false; | |
841 | try | |
842 | { | |
843 | expression_up new_exp = parse_exp_1 (&cond_string, loc->address, | |
844 | block_for_pc (loc->address), 0); | |
845 | if (*cond_string != 0) | |
846 | has_junk = true; | |
847 | else | |
848 | { | |
849 | loc->cond = std::move (new_exp); | |
850 | if (loc->disabled_by_cond && loc->enabled) | |
851 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
852 | "location %d, enabling.\n"), | |
853 | bp_num, loc_num); | |
854 | ||
855 | loc->disabled_by_cond = false; | |
856 | } | |
857 | } | |
858 | catch (const gdb_exception_error &e) | |
859 | { | |
860 | if (loc->enabled) | |
861 | { | |
862 | /* Warn if a user-enabled location is now becoming disabled-by-cond. | |
863 | BP_NUM is 0 if the breakpoint is being defined for the first | |
864 | time using the "break ... if ..." command, and non-zero if | |
865 | already defined. */ | |
866 | if (bp_num != 0) | |
867 | warning (_("failed to validate condition at location %d.%d, " | |
868 | "disabling:\n %s"), bp_num, loc_num, e.what ()); | |
869 | else | |
870 | warning (_("failed to validate condition at location %d, " | |
871 | "disabling:\n %s"), loc_num, e.what ()); | |
872 | } | |
873 | ||
874 | loc->disabled_by_cond = true; | |
875 | } | |
876 | ||
877 | if (has_junk) | |
878 | error (_("Garbage '%s' follows condition"), cond_string); | |
879 | } | |
880 | ||
adc36818 | 881 | void |
7a26bd4d | 882 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
733d554a | 883 | int from_tty, bool force) |
adc36818 | 884 | { |
4c55e970 | 885 | if (*exp == 0) |
3a5c3e22 | 886 | { |
4c55e970 TBA |
887 | xfree (b->cond_string); |
888 | b->cond_string = nullptr; | |
3a5c3e22 | 889 | |
4c55e970 | 890 | if (is_watchpoint (b)) |
78319c15 | 891 | static_cast<watchpoint *> (b)->cond_exp.reset (); |
4c55e970 TBA |
892 | else |
893 | { | |
b5fa468f | 894 | int loc_num = 1; |
78319c15 | 895 | for (bp_location *loc = b->loc; loc != nullptr; loc = loc->next) |
4c55e970 TBA |
896 | { |
897 | loc->cond.reset (); | |
b5fa468f TBA |
898 | if (loc->disabled_by_cond && loc->enabled) |
899 | printf_filtered (_("Breakpoint %d's condition is now valid at " | |
900 | "location %d, enabling.\n"), | |
901 | b->number, loc_num); | |
902 | loc->disabled_by_cond = false; | |
903 | loc_num++; | |
4c55e970 TBA |
904 | |
905 | /* No need to free the condition agent expression | |
906 | bytecode (if we have one). We will handle this | |
907 | when we go through update_global_location_list. */ | |
908 | } | |
909 | } | |
1e620590 | 910 | |
adc36818 PM |
911 | if (from_tty) |
912 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
913 | } | |
914 | else | |
915 | { | |
adc36818 PM |
916 | if (is_watchpoint (b)) |
917 | { | |
699bd4cf | 918 | innermost_block_tracker tracker; |
78319c15 | 919 | const char *arg = exp; |
4c55e970 | 920 | expression_up new_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
78319c15 | 921 | if (*arg != 0) |
adc36818 | 922 | error (_("Junk at end of expression")); |
78319c15 | 923 | watchpoint *w = static_cast<watchpoint *> (b); |
4c55e970 | 924 | w->cond_exp = std::move (new_exp); |
699bd4cf | 925 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
926 | } |
927 | else | |
928 | { | |
4c55e970 TBA |
929 | /* Parse and set condition expressions. We make two passes. |
930 | In the first, we parse the condition string to see if it | |
b5fa468f TBA |
931 | is valid in at least one location. If so, the condition |
932 | would be accepted. So we go ahead and set the locations' | |
933 | conditions. In case no valid case is found, we throw | |
4c55e970 TBA |
934 | the error and the condition string will be rejected. |
935 | This two-pass approach is taken to avoid setting the | |
936 | state of locations in case of a reject. */ | |
78319c15 | 937 | for (bp_location *loc = b->loc; loc != nullptr; loc = loc->next) |
4c55e970 | 938 | { |
b5fa468f TBA |
939 | try |
940 | { | |
941 | const char *arg = exp; | |
942 | parse_exp_1 (&arg, loc->address, | |
943 | block_for_pc (loc->address), 0); | |
944 | if (*arg != 0) | |
945 | error (_("Junk at end of expression")); | |
946 | break; | |
947 | } | |
948 | catch (const gdb_exception_error &e) | |
949 | { | |
950 | /* Condition string is invalid. If this happens to | |
733d554a TBA |
951 | be the last loc, abandon (if not forced) or continue |
952 | (if forced). */ | |
953 | if (loc->next == nullptr && !force) | |
b5fa468f TBA |
954 | throw; |
955 | } | |
4c55e970 TBA |
956 | } |
957 | ||
b5fa468f | 958 | /* If we reach here, the condition is valid at some locations. */ |
dda83cd7 SM |
959 | int loc_num = 1; |
960 | for (bp_location *loc = b->loc; loc != nullptr; | |
961 | loc = loc->next, loc_num++) | |
962 | set_breakpoint_location_condition (exp, loc, b->number, loc_num); | |
adc36818 | 963 | } |
1e620590 TBA |
964 | |
965 | /* We know that the new condition parsed successfully. The | |
966 | condition string of the breakpoint can be safely updated. */ | |
967 | xfree (b->cond_string); | |
968 | b->cond_string = xstrdup (exp); | |
969 | b->condition_not_parsed = 0; | |
adc36818 | 970 | } |
b775012e LM |
971 | mark_breakpoint_modified (b); |
972 | ||
76727919 | 973 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
974 | } |
975 | ||
b1d4d8d1 TBA |
976 | /* The options for the "condition" command. */ |
977 | ||
978 | struct condition_command_opts | |
979 | { | |
980 | /* For "-force". */ | |
981 | bool force_condition = false; | |
982 | }; | |
983 | ||
984 | static const gdb::option::option_def condition_command_option_defs[] = { | |
985 | ||
986 | gdb::option::flag_option_def<condition_command_opts> { | |
987 | "force", | |
988 | [] (condition_command_opts *opts) { return &opts->force_condition; }, | |
989 | N_("Set the condition even if it is invalid for all current locations."), | |
990 | }, | |
991 | ||
992 | }; | |
993 | ||
994 | /* Create an option_def_group for the "condition" options, with | |
995 | CC_OPTS as context. */ | |
996 | ||
997 | static inline gdb::option::option_def_group | |
998 | make_condition_command_options_def_group (condition_command_opts *cc_opts) | |
999 | { | |
1000 | return {{condition_command_option_defs}, cc_opts}; | |
1001 | } | |
1002 | ||
d55637df TT |
1003 | /* Completion for the "condition" command. */ |
1004 | ||
eb3ff9a5 | 1005 | static void |
6f937416 | 1006 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 1007 | completion_tracker &tracker, |
b1d4d8d1 | 1008 | const char *text, const char * /*word*/) |
d55637df | 1009 | { |
b1d4d8d1 TBA |
1010 | bool has_no_arguments = (*text == '\0'); |
1011 | condition_command_opts cc_opts; | |
1012 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1013 | if (gdb::option::complete_options | |
1014 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group)) | |
1015 | return; | |
d55637df | 1016 | |
f1735a53 | 1017 | text = skip_spaces (text); |
b1d4d8d1 | 1018 | const char *space = skip_to_space (text); |
d55637df TT |
1019 | if (*space == '\0') |
1020 | { | |
1021 | int len; | |
1022 | struct breakpoint *b; | |
d55637df TT |
1023 | |
1024 | if (text[0] == '$') | |
1025 | { | |
b1d4d8d1 | 1026 | tracker.advance_custom_word_point_by (1); |
d55637df | 1027 | /* We don't support completion of history indices. */ |
eb3ff9a5 PA |
1028 | if (!isdigit (text[1])) |
1029 | complete_internalvar (tracker, &text[1]); | |
1030 | return; | |
d55637df TT |
1031 | } |
1032 | ||
b1d4d8d1 TBA |
1033 | /* Suggest the "-force" flag if no arguments are given. If |
1034 | arguments were passed, they either already include the flag, | |
1035 | or we are beyond the point of suggesting it because it's | |
1036 | positionally the first argument. */ | |
1037 | if (has_no_arguments) | |
1038 | gdb::option::complete_on_all_options (tracker, group); | |
1039 | ||
d55637df TT |
1040 | /* We're completing the breakpoint number. */ |
1041 | len = strlen (text); | |
1042 | ||
1043 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
1044 | { |
1045 | char number[50]; | |
1046 | ||
1047 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1048 | ||
1049 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 1050 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 1051 | } |
d55637df | 1052 | |
eb3ff9a5 | 1053 | return; |
d55637df TT |
1054 | } |
1055 | ||
b1d4d8d1 TBA |
1056 | /* We're completing the expression part. Skip the breakpoint num. */ |
1057 | const char *exp_start = skip_spaces (space); | |
1058 | tracker.advance_custom_word_point_by (exp_start - text); | |
1059 | text = exp_start; | |
1060 | const char *word = advance_to_expression_complete_word_point (tracker, text); | |
eb3ff9a5 | 1061 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
1062 | } |
1063 | ||
c906108c SS |
1064 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1065 | ||
1066 | static void | |
0b39b52e | 1067 | condition_command (const char *arg, int from_tty) |
c906108c | 1068 | { |
52f0bd74 | 1069 | struct breakpoint *b; |
0b39b52e | 1070 | const char *p; |
52f0bd74 | 1071 | int bnum; |
c906108c SS |
1072 | |
1073 | if (arg == 0) | |
e2e0b3e5 | 1074 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1075 | |
1076 | p = arg; | |
733d554a TBA |
1077 | |
1078 | /* Check if the "-force" flag was passed. */ | |
b1d4d8d1 TBA |
1079 | condition_command_opts cc_opts; |
1080 | const auto group = make_condition_command_options_def_group (&cc_opts); | |
1081 | gdb::option::process_options | |
1082 | (&p, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_ERROR, group); | |
733d554a | 1083 | |
c906108c | 1084 | bnum = get_number (&p); |
5c44784c | 1085 | if (bnum == 0) |
8a3fe4f8 | 1086 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1087 | |
1088 | ALL_BREAKPOINTS (b) | |
1089 | if (b->number == bnum) | |
2f069f6f | 1090 | { |
6dddc817 DE |
1091 | /* Check if this breakpoint has a "stop" method implemented in an |
1092 | extension language. This method and conditions entered into GDB | |
1093 | from the CLI are mutually exclusive. */ | |
1094 | const struct extension_language_defn *extlang | |
1095 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1096 | ||
1097 | if (extlang != NULL) | |
1098 | { | |
1099 | error (_("Only one stop condition allowed. There is currently" | |
1100 | " a %s stop condition defined for this breakpoint."), | |
1101 | ext_lang_capitalized_name (extlang)); | |
1102 | } | |
b1d4d8d1 | 1103 | set_breakpoint_condition (b, p, from_tty, cc_opts.force_condition); |
b775012e LM |
1104 | |
1105 | if (is_breakpoint (b)) | |
44702360 | 1106 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 1107 | |
2f069f6f JB |
1108 | return; |
1109 | } | |
c906108c | 1110 | |
8a3fe4f8 | 1111 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1112 | } |
1113 | ||
a7bdde9e VP |
1114 | /* Check that COMMAND do not contain commands that are suitable |
1115 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1116 | Throw if any such commands is found. */ |
1117 | ||
a7bdde9e VP |
1118 | static void |
1119 | check_no_tracepoint_commands (struct command_line *commands) | |
1120 | { | |
1121 | struct command_line *c; | |
cc59ec59 | 1122 | |
a7bdde9e VP |
1123 | for (c = commands; c; c = c->next) |
1124 | { | |
a7bdde9e | 1125 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1126 | error (_("The 'while-stepping' command can " |
1127 | "only be used for tracepoints")); | |
a7bdde9e | 1128 | |
12973681 TT |
1129 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1130 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1131 | |
1132 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1133 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1134 | command directly. */ |
1135 | if (strstr (c->line, "collect ") == c->line) | |
1136 | error (_("The 'collect' command can only be used for tracepoints")); | |
1137 | ||
51661e93 VP |
1138 | if (strstr (c->line, "teval ") == c->line) |
1139 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1140 | } |
1141 | } | |
1142 | ||
c1fc2657 | 1143 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1144 | { |
c1fc2657 | 1145 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1146 | }; |
1147 | ||
d77f58be SS |
1148 | /* Encapsulate tests for different types of tracepoints. */ |
1149 | ||
3b0871f4 SM |
1150 | static bool |
1151 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1152 | { |
1153 | return (type == bp_tracepoint | |
1154 | || type == bp_fast_tracepoint | |
1155 | || type == bp_static_tracepoint); | |
1156 | } | |
1157 | ||
3b0871f4 SM |
1158 | static bool |
1159 | is_longjmp_type (bptype type) | |
1160 | { | |
1161 | return type == bp_longjmp || type == bp_exception; | |
1162 | } | |
1163 | ||
f2478a7e SM |
1164 | /* See breakpoint.h. */ |
1165 | ||
1166 | bool | |
d77f58be | 1167 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1168 | { |
d9b3f62e | 1169 | return is_tracepoint_type (b->type); |
a7bdde9e | 1170 | } |
d9b3f62e | 1171 | |
a5e364af SM |
1172 | /* Factory function to create an appropriate instance of breakpoint given |
1173 | TYPE. */ | |
1174 | ||
1175 | static std::unique_ptr<breakpoint> | |
1176 | new_breakpoint_from_type (bptype type) | |
1177 | { | |
1178 | breakpoint *b; | |
1179 | ||
1180 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1181 | b = new tracepoint (); |
3b0871f4 | 1182 | else if (is_longjmp_type (type)) |
c1fc2657 | 1183 | b = new longjmp_breakpoint (); |
a5e364af SM |
1184 | else |
1185 | b = new breakpoint (); | |
1186 | ||
1187 | return std::unique_ptr<breakpoint> (b); | |
1188 | } | |
1189 | ||
e5dd4106 | 1190 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1191 | breakpoint. This function will throw an exception if a problem is |
1192 | found. */ | |
48cb2d85 | 1193 | |
95a42b64 TT |
1194 | static void |
1195 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1196 | struct command_line *commands) | |
48cb2d85 | 1197 | { |
d77f58be | 1198 | if (is_tracepoint (b)) |
a7bdde9e | 1199 | { |
c9a6ce02 | 1200 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1201 | struct command_line *c; |
1202 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1203 | |
1204 | /* Reset the while-stepping step count. The previous commands | |
dda83cd7 SM |
1205 | might have included a while-stepping action, while the new |
1206 | ones might not. */ | |
c9a6ce02 PA |
1207 | t->step_count = 0; |
1208 | ||
1209 | /* We need to verify that each top-level element of commands is | |
1210 | valid for tracepoints, that there's at most one | |
1211 | while-stepping element, and that the while-stepping's body | |
1212 | has valid tracing commands excluding nested while-stepping. | |
1213 | We also need to validate the tracepoint action line in the | |
1214 | context of the tracepoint --- validate_actionline actually | |
1215 | has side effects, like setting the tracepoint's | |
1216 | while-stepping STEP_COUNT, in addition to checking if the | |
1217 | collect/teval actions parse and make sense in the | |
1218 | tracepoint's context. */ | |
a7bdde9e VP |
1219 | for (c = commands; c; c = c->next) |
1220 | { | |
a7bdde9e VP |
1221 | if (c->control_type == while_stepping_control) |
1222 | { | |
1223 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1224 | error (_("The 'while-stepping' command " |
1225 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1226 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1227 | error (_("The 'while-stepping' command " |
1228 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1229 | |
1230 | if (while_stepping) | |
3e43a32a MS |
1231 | error (_("The 'while-stepping' command " |
1232 | "can be used only once")); | |
a7bdde9e VP |
1233 | else |
1234 | while_stepping = c; | |
1235 | } | |
c9a6ce02 PA |
1236 | |
1237 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1238 | } |
1239 | if (while_stepping) | |
1240 | { | |
1241 | struct command_line *c2; | |
1242 | ||
12973681 TT |
1243 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1244 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1245 | for (; c2; c2 = c2->next) |
1246 | { | |
a7bdde9e VP |
1247 | if (c2->control_type == while_stepping_control) |
1248 | error (_("The 'while-stepping' command cannot be nested")); | |
1249 | } | |
1250 | } | |
1251 | } | |
1252 | else | |
1253 | { | |
1254 | check_no_tracepoint_commands (commands); | |
1255 | } | |
95a42b64 TT |
1256 | } |
1257 | ||
0fb4aa4b PA |
1258 | /* Return a vector of all the static tracepoints set at ADDR. The |
1259 | caller is responsible for releasing the vector. */ | |
1260 | ||
f51e0e20 | 1261 | std::vector<breakpoint *> |
0fb4aa4b PA |
1262 | static_tracepoints_here (CORE_ADDR addr) |
1263 | { | |
1264 | struct breakpoint *b; | |
f51e0e20 | 1265 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1266 | struct bp_location *loc; |
1267 | ||
1268 | ALL_BREAKPOINTS (b) | |
1269 | if (b->type == bp_static_tracepoint) | |
1270 | { | |
1271 | for (loc = b->loc; loc; loc = loc->next) | |
1272 | if (loc->address == addr) | |
f51e0e20 | 1273 | found.push_back (b); |
0fb4aa4b PA |
1274 | } |
1275 | ||
1276 | return found; | |
1277 | } | |
1278 | ||
95a42b64 | 1279 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1280 | validate that only allowed commands are included. */ |
95a42b64 TT |
1281 | |
1282 | void | |
4a64f543 | 1283 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1284 | counted_command_line &&commands) |
95a42b64 | 1285 | { |
93921405 | 1286 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1287 | |
d1b0a7bf | 1288 | b->commands = std::move (commands); |
76727919 | 1289 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1290 | } |
1291 | ||
45a43567 TT |
1292 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1293 | is not the same as the "silent" that may appear in the breakpoint's | |
1294 | commands. */ | |
1295 | ||
1296 | void | |
1297 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1298 | { | |
1299 | int old_silent = b->silent; | |
1300 | ||
1301 | b->silent = silent; | |
1302 | if (old_silent != silent) | |
76727919 | 1303 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1304 | } |
1305 | ||
1306 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1307 | breakpoint work for any thread. */ | |
1308 | ||
1309 | void | |
1310 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1311 | { | |
1312 | int old_thread = b->thread; | |
1313 | ||
1314 | b->thread = thread; | |
1315 | if (old_thread != thread) | |
76727919 | 1316 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1317 | } |
1318 | ||
1319 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1320 | breakpoint work for any task. */ | |
1321 | ||
1322 | void | |
1323 | breakpoint_set_task (struct breakpoint *b, int task) | |
1324 | { | |
1325 | int old_task = b->task; | |
1326 | ||
1327 | b->task = task; | |
1328 | if (old_task != task) | |
76727919 | 1329 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1330 | } |
1331 | ||
95a42b64 | 1332 | static void |
896b6bda | 1333 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1334 | struct command_line *control) |
95a42b64 | 1335 | { |
d1b0a7bf | 1336 | counted_command_line cmd; |
999700cd PW |
1337 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1338 | NULL after the call to read_command_lines if the user provides an empty | |
1339 | list of command by just typing "end". */ | |
1340 | bool cmd_read = false; | |
95a42b64 | 1341 | |
896b6bda PA |
1342 | std::string new_arg; |
1343 | ||
95a42b64 TT |
1344 | if (arg == NULL || !*arg) |
1345 | { | |
da1df1db | 1346 | /* Argument not explicitly given. Synthesize it. */ |
86b17b60 | 1347 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1348 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1349 | breakpoint_count); | |
95a42b64 | 1350 | else if (breakpoint_count > 0) |
896b6bda | 1351 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b | 1352 | } |
da1df1db TBA |
1353 | else |
1354 | { | |
1355 | /* Create a copy of ARG. This is needed because the "commands" | |
1356 | command may be coming from a script. In that case, the read | |
1357 | line buffer is going to be overwritten in the lambda of | |
1358 | 'map_breakpoint_numbers' below when reading the next line | |
1359 | before we are are done parsing the breakpoint numbers. */ | |
1360 | new_arg = arg; | |
1361 | } | |
1362 | arg = new_arg.c_str (); | |
48649e1b TT |
1363 | |
1364 | map_breakpoint_numbers | |
1365 | (arg, [&] (breakpoint *b) | |
1366 | { | |
999700cd | 1367 | if (!cmd_read) |
48649e1b | 1368 | { |
999700cd | 1369 | gdb_assert (cmd == NULL); |
48649e1b | 1370 | if (control != NULL) |
12973681 | 1371 | cmd = control->body_list_0; |
48649e1b TT |
1372 | else |
1373 | { | |
81b1e71c TT |
1374 | std::string str |
1375 | = string_printf (_("Type commands for breakpoint(s) " | |
1376 | "%s, one per line."), | |
1377 | arg); | |
48649e1b | 1378 | |
60b3cef2 TT |
1379 | auto do_validate = [=] (const char *line) |
1380 | { | |
1381 | validate_actionline (line, b); | |
1382 | }; | |
1383 | gdb::function_view<void (const char *)> validator; | |
1384 | if (is_tracepoint (b)) | |
1385 | validator = do_validate; | |
1386 | ||
1387 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1388 | } |
999700cd | 1389 | cmd_read = true; |
48649e1b TT |
1390 | } |
1391 | ||
1392 | /* If a breakpoint was on the list more than once, we don't need to | |
1393 | do anything. */ | |
1394 | if (b->commands != cmd) | |
1395 | { | |
d1b0a7bf | 1396 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1397 | b->commands = cmd; |
76727919 | 1398 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1399 | } |
1400 | }); | |
95a42b64 TT |
1401 | } |
1402 | ||
1403 | static void | |
0b39b52e | 1404 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1405 | { |
1406 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1407 | } |
40c03ae8 EZ |
1408 | |
1409 | /* Like commands_command, but instead of reading the commands from | |
1410 | input stream, takes them from an already parsed command structure. | |
1411 | ||
1412 | This is used by cli-script.c to DTRT with breakpoint commands | |
1413 | that are part of if and while bodies. */ | |
1414 | enum command_control_type | |
896b6bda | 1415 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1416 | { |
95a42b64 TT |
1417 | commands_command_1 (arg, 0, cmd); |
1418 | return simple_control; | |
40c03ae8 | 1419 | } |
876fa593 JK |
1420 | |
1421 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1422 | ||
1423 | static int | |
1424 | bp_location_has_shadow (struct bp_location *bl) | |
1425 | { | |
1426 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1427 | return 0; | |
1428 | if (!bl->inserted) | |
1429 | return 0; | |
1430 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1431 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1432 | return 0; |
1433 | return 1; | |
1434 | } | |
1435 | ||
9d497a19 PA |
1436 | /* Update BUF, which is LEN bytes read from the target address |
1437 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1438 | contents. | |
1439 | ||
1440 | If READBUF is not NULL, this buffer must not overlap with the of | |
1441 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1442 | failed assertion internal error will be raised. */ | |
1443 | ||
1444 | static void | |
1445 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1446 | const gdb_byte *writebuf_org, | |
1447 | ULONGEST memaddr, LONGEST len, | |
1448 | struct bp_target_info *target_info, | |
1449 | struct gdbarch *gdbarch) | |
1450 | { | |
1451 | /* Now do full processing of the found relevant range of elements. */ | |
1452 | CORE_ADDR bp_addr = 0; | |
1453 | int bp_size = 0; | |
1454 | int bptoffset = 0; | |
1455 | ||
1456 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1457 | current_program_space->aspace, 0)) | |
1458 | { | |
1459 | /* The breakpoint is inserted in a different address space. */ | |
1460 | return; | |
1461 | } | |
1462 | ||
1463 | /* Addresses and length of the part of the breakpoint that | |
1464 | we need to copy. */ | |
1465 | bp_addr = target_info->placed_address; | |
1466 | bp_size = target_info->shadow_len; | |
1467 | ||
1468 | if (bp_addr + bp_size <= memaddr) | |
1469 | { | |
1470 | /* The breakpoint is entirely before the chunk of memory we are | |
1471 | reading. */ | |
1472 | return; | |
1473 | } | |
1474 | ||
1475 | if (bp_addr >= memaddr + len) | |
1476 | { | |
1477 | /* The breakpoint is entirely after the chunk of memory we are | |
1478 | reading. */ | |
1479 | return; | |
1480 | } | |
1481 | ||
1482 | /* Offset within shadow_contents. */ | |
1483 | if (bp_addr < memaddr) | |
1484 | { | |
1485 | /* Only copy the second part of the breakpoint. */ | |
1486 | bp_size -= memaddr - bp_addr; | |
1487 | bptoffset = memaddr - bp_addr; | |
1488 | bp_addr = memaddr; | |
1489 | } | |
1490 | ||
1491 | if (bp_addr + bp_size > memaddr + len) | |
1492 | { | |
1493 | /* Only copy the first part of the breakpoint. */ | |
1494 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1495 | } | |
1496 | ||
1497 | if (readbuf != NULL) | |
1498 | { | |
1499 | /* Verify that the readbuf buffer does not overlap with the | |
1500 | shadow_contents buffer. */ | |
1501 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1502 | || readbuf >= (target_info->shadow_contents | |
1503 | + target_info->shadow_len)); | |
1504 | ||
1505 | /* Update the read buffer with this inserted breakpoint's | |
1506 | shadow. */ | |
1507 | memcpy (readbuf + bp_addr - memaddr, | |
1508 | target_info->shadow_contents + bptoffset, bp_size); | |
1509 | } | |
1510 | else | |
1511 | { | |
1512 | const unsigned char *bp; | |
0d5ed153 MR |
1513 | CORE_ADDR addr = target_info->reqstd_address; |
1514 | int placed_size; | |
9d497a19 PA |
1515 | |
1516 | /* Update the shadow with what we want to write to memory. */ | |
1517 | memcpy (target_info->shadow_contents + bptoffset, | |
1518 | writebuf_org + bp_addr - memaddr, bp_size); | |
1519 | ||
1520 | /* Determine appropriate breakpoint contents and size for this | |
1521 | address. */ | |
0d5ed153 | 1522 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1523 | |
1524 | /* Update the final write buffer with this inserted | |
1525 | breakpoint's INSN. */ | |
1526 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1527 | } | |
1528 | } | |
1529 | ||
8defab1a | 1530 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1531 | by replacing any memory breakpoints with their shadowed contents. |
1532 | ||
35c63cd8 JB |
1533 | If READBUF is not NULL, this buffer must not overlap with any of |
1534 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1535 | a failed assertion internal error will be raised. | |
1536 | ||
876fa593 | 1537 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1538 | bl->address - bp_locations_placed_address_before_address_max |
1539 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1540 | The range we were requested to resolve shadows for is: |
1541 | memaddr ... memaddr + len | |
1542 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1543 | memaddr + len <= (bl->address |
f5336ca5 | 1544 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1545 | and: |
f5336ca5 | 1546 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1547 | |
8defab1a | 1548 | void |
f0ba3972 PA |
1549 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1550 | const gdb_byte *writebuf_org, | |
1551 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1552 | { |
4a64f543 MS |
1553 | /* Left boundary, right boundary and median element of our binary |
1554 | search. */ | |
876fa593 JK |
1555 | unsigned bc_l, bc_r, bc; |
1556 | ||
4a64f543 MS |
1557 | /* Find BC_L which is a leftmost element which may affect BUF |
1558 | content. It is safe to report lower value but a failure to | |
1559 | report higher one. */ | |
876fa593 JK |
1560 | |
1561 | bc_l = 0; | |
f5336ca5 | 1562 | bc_r = bp_locations_count; |
876fa593 JK |
1563 | while (bc_l + 1 < bc_r) |
1564 | { | |
35df4500 | 1565 | struct bp_location *bl; |
876fa593 JK |
1566 | |
1567 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1568 | bl = bp_locations[bc]; |
876fa593 | 1569 | |
4a64f543 MS |
1570 | /* Check first BL->ADDRESS will not overflow due to the added |
1571 | constant. Then advance the left boundary only if we are sure | |
1572 | the BC element can in no way affect the BUF content (MEMADDR | |
1573 | to MEMADDR + LEN range). | |
876fa593 | 1574 | |
f5336ca5 | 1575 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1576 | offset so that we cannot miss a breakpoint with its shadow |
1577 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1578 | |
f5336ca5 | 1579 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1580 | >= bl->address) |
f5336ca5 | 1581 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1582 | <= memaddr)) |
876fa593 JK |
1583 | bc_l = bc; |
1584 | else | |
1585 | bc_r = bc; | |
1586 | } | |
1587 | ||
128070bb PA |
1588 | /* Due to the binary search above, we need to make sure we pick the |
1589 | first location that's at BC_L's address. E.g., if there are | |
1590 | multiple locations at the same address, BC_L may end up pointing | |
1591 | at a duplicate location, and miss the "master"/"inserted" | |
1592 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1593 | B: | |
1594 | ||
1595 | L1@A, L2@A, L3@B, ... | |
1596 | ||
1597 | BC_L could end up pointing at location L2, while the "master" | |
1598 | location could be L1. Since the `loc->inserted' flag is only set | |
1599 | on "master" locations, we'd forget to restore the shadow of L1 | |
1600 | and L2. */ | |
1601 | while (bc_l > 0 | |
f5336ca5 | 1602 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1603 | bc_l--; |
1604 | ||
876fa593 JK |
1605 | /* Now do full processing of the found relevant range of elements. */ |
1606 | ||
f5336ca5 | 1607 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1608 | { |
f5336ca5 | 1609 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1610 | |
35df4500 TJB |
1611 | /* bp_location array has BL->OWNER always non-NULL. */ |
1612 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1613 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1614 | bl->owner->number); |
ffce0d52 | 1615 | |
e5dd4106 | 1616 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1617 | content. */ |
1618 | ||
f5336ca5 PA |
1619 | if (bl->address >= bp_locations_placed_address_before_address_max |
1620 | && memaddr + len <= (bl->address | |
1621 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1622 | break; |
1623 | ||
35df4500 | 1624 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1625 | continue; |
6c95b8df | 1626 | |
9d497a19 PA |
1627 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1628 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1629 | } | |
c906108c | 1630 | } |
9d497a19 | 1631 | |
f2478a7e | 1632 | /* See breakpoint.h. */ |
b775012e | 1633 | |
f2478a7e | 1634 | bool |
b775012e LM |
1635 | is_breakpoint (const struct breakpoint *bpt) |
1636 | { | |
1637 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1638 | || bpt->type == bp_hardware_breakpoint |
1639 | || bpt->type == bp_dprintf); | |
b775012e LM |
1640 | } |
1641 | ||
60e1c644 PA |
1642 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1643 | ||
f2478a7e | 1644 | static bool |
d77f58be | 1645 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1646 | { |
1647 | return (bpt->type == bp_hardware_watchpoint | |
1648 | || bpt->type == bp_read_watchpoint | |
1649 | || bpt->type == bp_access_watchpoint); | |
1650 | } | |
7270d8f2 | 1651 | |
f2478a7e | 1652 | /* See breakpoint.h. */ |
60e1c644 | 1653 | |
f2478a7e | 1654 | bool |
d77f58be | 1655 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1656 | { |
1657 | return (is_hardware_watchpoint (bpt) | |
1658 | || bpt->type == bp_watchpoint); | |
1659 | } | |
1660 | ||
3a5c3e22 PA |
1661 | /* Returns true if the current thread and its running state are safe |
1662 | to evaluate or update watchpoint B. Watchpoints on local | |
1663 | expressions need to be evaluated in the context of the thread that | |
1664 | was current when the watchpoint was created, and, that thread needs | |
1665 | to be stopped to be able to select the correct frame context. | |
1666 | Watchpoints on global expressions can be evaluated on any thread, | |
1667 | and in any state. It is presently left to the target allowing | |
1668 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1669 | |
1670 | static int | |
3a5c3e22 | 1671 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1672 | { |
c1fc2657 | 1673 | return (b->pspace == current_program_space |
d7e15655 TT |
1674 | && (b->watchpoint_thread == null_ptid |
1675 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1676 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1677 | } |
1678 | ||
d0fb5eae JK |
1679 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1680 | associated bp_watchpoint_scope breakpoint. */ | |
1681 | ||
1682 | static void | |
3a5c3e22 | 1683 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1684 | { |
c1fc2657 | 1685 | if (w->related_breakpoint != w) |
d0fb5eae | 1686 | { |
c1fc2657 SM |
1687 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1688 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1689 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1690 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1691 | w->related_breakpoint = w; | |
d0fb5eae | 1692 | } |
c1fc2657 | 1693 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1694 | } |
1695 | ||
bb9d5f81 PP |
1696 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1697 | watchpoint W. */ | |
1698 | ||
1699 | static struct value * | |
1700 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1701 | { | |
1702 | struct value *bit_val; | |
1703 | ||
1704 | if (val == NULL) | |
1705 | return NULL; | |
1706 | ||
1707 | bit_val = allocate_value (value_type (val)); | |
1708 | ||
1709 | unpack_value_bitfield (bit_val, | |
1710 | w->val_bitpos, | |
1711 | w->val_bitsize, | |
1712 | value_contents_for_printing (val), | |
1713 | value_offset (val), | |
1714 | val); | |
1715 | ||
1716 | return bit_val; | |
1717 | } | |
1718 | ||
c6d81124 PA |
1719 | /* Allocate a dummy location and add it to B, which must be a software |
1720 | watchpoint. This is required because even if a software watchpoint | |
1721 | is not watching any memory, bpstat_stop_status requires a location | |
1722 | to be able to report stops. */ | |
1723 | ||
1724 | static void | |
1725 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1726 | struct program_space *pspace) | |
1727 | { | |
1728 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1729 | ||
1730 | b->loc = allocate_bp_location (b); | |
1731 | b->loc->pspace = pspace; | |
1732 | b->loc->address = -1; | |
1733 | b->loc->length = -1; | |
1734 | } | |
1735 | ||
1736 | /* Returns true if B is a software watchpoint that is not watching any | |
1737 | memory (e.g., "watch $pc"). */ | |
1738 | ||
f2478a7e | 1739 | static bool |
c6d81124 PA |
1740 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1741 | { | |
1742 | return (b->type == bp_watchpoint | |
1743 | && b->loc != NULL | |
1744 | && b->loc->next == NULL | |
1745 | && b->loc->address == -1 | |
1746 | && b->loc->length == -1); | |
1747 | } | |
1748 | ||
567e1b4e JB |
1749 | /* Assuming that B is a watchpoint: |
1750 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1751 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1752 | - Evaluate the condition if there is one, and store the result |
1753 | in b->loc->cond. | |
a5606eee VP |
1754 | - Update the list of values that must be watched in B->loc. |
1755 | ||
4a64f543 MS |
1756 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1757 | nothing. If this is local watchpoint that is out of scope, delete | |
1758 | it. | |
1759 | ||
1760 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1761 | removed + inserted on each stop here. Normal breakpoints must | |
1762 | never be removed because they might be missed by a running thread | |
1763 | when debugging in non-stop mode. On the other hand, hardware | |
1764 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1765 | to each LWP since they are stored in each LWP's hardware debug | |
1766 | registers. Therefore, such LWP must be stopped first in order to | |
1767 | be able to modify its hardware watchpoints. | |
1768 | ||
1769 | Hardware watchpoints must be reset exactly once after being | |
1770 | presented to the user. It cannot be done sooner, because it would | |
1771 | reset the data used to present the watchpoint hit to the user. And | |
1772 | it must not be done later because it could display the same single | |
1773 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1774 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1775 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1776 | not user-visible - its hit is suppressed if the memory content has | |
1777 | not changed. | |
1778 | ||
1779 | The following constraints influence the location where we can reset | |
1780 | hardware watchpoints: | |
1781 | ||
1782 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1783 | called several times when GDB stops. | |
1784 | ||
1785 | [linux] | |
1786 | * Multiple hardware watchpoints can be hit at the same time, | |
1787 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1788 | hit at a time as the reason for stopping, and all the other hits | |
1789 | are presented later, one after the other, each time the user | |
1790 | requests the execution to be resumed. Execution is not resumed | |
1791 | for the threads still having pending hit event stored in | |
1792 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1793 | the inferior on the first stop the thread hit event is kept being | |
1794 | reported from its cached value by linux_nat_stopped_data_address | |
1795 | until the real thread resume happens after the watchpoint gets | |
1796 | presented and thus its LWP_INFO->STATUS gets reset. | |
1797 | ||
1798 | Therefore the hardware watchpoint hit can get safely reset on the | |
1799 | watchpoint removal from inferior. */ | |
a79d3c27 | 1800 | |
b40ce68a | 1801 | static void |
3a5c3e22 | 1802 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1803 | { |
a5606eee | 1804 | int within_current_scope; |
a5606eee | 1805 | struct frame_id saved_frame_id; |
66076460 | 1806 | int frame_saved; |
a5606eee | 1807 | |
f6bc2008 PA |
1808 | /* If this is a local watchpoint, we only want to check if the |
1809 | watchpoint frame is in scope if the current thread is the thread | |
1810 | that was used to create the watchpoint. */ | |
1811 | if (!watchpoint_in_thread_scope (b)) | |
1812 | return; | |
1813 | ||
c1fc2657 | 1814 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1815 | return; |
1816 | ||
66076460 | 1817 | frame_saved = 0; |
a5606eee VP |
1818 | |
1819 | /* Determine if the watchpoint is within scope. */ | |
1820 | if (b->exp_valid_block == NULL) | |
1821 | within_current_scope = 1; | |
1822 | else | |
1823 | { | |
b5db5dfc UW |
1824 | struct frame_info *fi = get_current_frame (); |
1825 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1826 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1827 | ||
c9cf6e20 MG |
1828 | /* If we're at a point where the stack has been destroyed |
1829 | (e.g. in a function epilogue), unwinding may not work | |
1830 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1831 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1832 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1833 | return; |
66076460 DJ |
1834 | |
1835 | /* Save the current frame's ID so we can restore it after | |
dda83cd7 | 1836 | evaluating the watchpoint expression on its own frame. */ |
66076460 | 1837 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression |
dda83cd7 SM |
1838 | took a frame parameter, so that we didn't have to change the |
1839 | selected frame. */ | |
66076460 DJ |
1840 | frame_saved = 1; |
1841 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1842 | ||
a5606eee VP |
1843 | fi = frame_find_by_id (b->watchpoint_frame); |
1844 | within_current_scope = (fi != NULL); | |
1845 | if (within_current_scope) | |
1846 | select_frame (fi); | |
1847 | } | |
1848 | ||
b5db5dfc UW |
1849 | /* We don't free locations. They are stored in the bp_location array |
1850 | and update_global_location_list will eventually delete them and | |
1851 | remove breakpoints if needed. */ | |
c1fc2657 | 1852 | b->loc = NULL; |
b5db5dfc | 1853 | |
a5606eee VP |
1854 | if (within_current_scope && reparse) |
1855 | { | |
bbc13ae3 | 1856 | const char *s; |
d63d0675 | 1857 | |
4d01a485 | 1858 | b->exp.reset (); |
d63d0675 | 1859 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1860 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1861 | /* If the meaning of expression itself changed, the old value is |
1862 | no longer relevant. We don't want to report a watchpoint hit | |
1863 | to the user when the old value and the new value may actually | |
1864 | be completely different objects. */ | |
fa4727a6 | 1865 | b->val = NULL; |
4c1d86d9 | 1866 | b->val_valid = false; |
60e1c644 PA |
1867 | |
1868 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1869 | expression is stored in the breakpoint object, not in the | |
1870 | locations (re)created below. */ | |
c1fc2657 | 1871 | if (b->cond_string != NULL) |
60e1c644 | 1872 | { |
4d01a485 | 1873 | b->cond_exp.reset (); |
60e1c644 | 1874 | |
c1fc2657 | 1875 | s = b->cond_string; |
1bb9788d | 1876 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1877 | } |
a5606eee | 1878 | } |
a5606eee VP |
1879 | |
1880 | /* If we failed to parse the expression, for example because | |
1881 | it refers to a global variable in a not-yet-loaded shared library, | |
1882 | don't try to insert watchpoint. We don't automatically delete | |
1883 | such watchpoint, though, since failure to parse expression | |
1884 | is different from out-of-scope watchpoint. */ | |
55f6301a | 1885 | if (!target_has_execution ()) |
2d134ed3 PA |
1886 | { |
1887 | /* Without execution, memory can't change. No use to try and | |
1888 | set watchpoint locations. The watchpoint will be reset when | |
1889 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1890 | if (!can_use_hw_watchpoints) |
1891 | { | |
c1fc2657 SM |
1892 | if (b->ops->works_in_software_mode (b)) |
1893 | b->type = bp_watchpoint; | |
e8369a73 | 1894 | else |
638aa5a1 AB |
1895 | error (_("Can't set read/access watchpoint when " |
1896 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1897 | } |
2d134ed3 PA |
1898 | } |
1899 | else if (within_current_scope && b->exp) | |
a5606eee | 1900 | { |
0cf6dd15 | 1901 | int pc = 0; |
a6535de1 | 1902 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1903 | struct value *v, *result; |
2d134ed3 | 1904 | struct program_space *frame_pspace; |
a5606eee | 1905 | |
2e362716 | 1906 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, false); |
a5606eee | 1907 | |
a5606eee VP |
1908 | /* Avoid setting b->val if it's already set. The meaning of |
1909 | b->val is 'the last value' user saw, and we should update | |
1910 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1911 | happens, the code that reports it updates b->val directly. |
1912 | We don't keep track of the memory value for masked | |
1913 | watchpoints. */ | |
c1fc2657 | 1914 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1915 | { |
bb9d5f81 | 1916 | if (b->val_bitsize != 0) |
850645cf TT |
1917 | v = extract_bitfield_from_watchpoint_value (b, v); |
1918 | b->val = release_value (v); | |
4c1d86d9 | 1919 | b->val_valid = true; |
fa4727a6 | 1920 | } |
a5606eee | 1921 | |
2d134ed3 PA |
1922 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1923 | ||
a5606eee | 1924 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1925 | gdb_assert (!val_chain.empty ()); |
1926 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1927 | { |
a6535de1 TT |
1928 | v = iter.get (); |
1929 | ||
a5606eee VP |
1930 | /* If it's a memory location, and GDB actually needed |
1931 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1932 | must watch it. If the first value returned is |
1933 | still lazy, that means an error occurred reading it; | |
1934 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1935 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1936 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1937 | { |
1938 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1939 | |
a5606eee VP |
1940 | /* We only watch structs and arrays if user asked |
1941 | for it explicitly, never if they just happen to | |
1942 | appear in the middle of some value chain. */ | |
fa4727a6 | 1943 | if (v == result |
78134374 SM |
1944 | || (vtype->code () != TYPE_CODE_STRUCT |
1945 | && vtype->code () != TYPE_CODE_ARRAY)) | |
a5606eee VP |
1946 | { |
1947 | CORE_ADDR addr; | |
f486487f | 1948 | enum target_hw_bp_type type; |
a5606eee | 1949 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1950 | int bitpos = 0, bitsize = 0; |
1951 | ||
1952 | if (value_bitsize (v) != 0) | |
1953 | { | |
1954 | /* Extract the bit parameters out from the bitfield | |
1955 | sub-expression. */ | |
1956 | bitpos = value_bitpos (v); | |
1957 | bitsize = value_bitsize (v); | |
1958 | } | |
1959 | else if (v == result && b->val_bitsize != 0) | |
1960 | { | |
1961 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1962 | lvalue whose bit parameters are saved in the fields | |
1963 | VAL_BITPOS and VAL_BITSIZE. */ | |
1964 | bitpos = b->val_bitpos; | |
1965 | bitsize = b->val_bitsize; | |
1966 | } | |
a5606eee | 1967 | |
42ae5230 | 1968 | addr = value_address (v); |
bb9d5f81 PP |
1969 | if (bitsize != 0) |
1970 | { | |
1971 | /* Skip the bytes that don't contain the bitfield. */ | |
1972 | addr += bitpos / 8; | |
1973 | } | |
1974 | ||
a5606eee | 1975 | type = hw_write; |
c1fc2657 | 1976 | if (b->type == bp_read_watchpoint) |
a5606eee | 1977 | type = hw_read; |
c1fc2657 | 1978 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1979 | type = hw_access; |
3a5c3e22 | 1980 | |
c1fc2657 SM |
1981 | loc = allocate_bp_location (b); |
1982 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1983 | ; |
1984 | *tmp = loc; | |
a6d9a66e | 1985 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1986 | |
1987 | loc->pspace = frame_pspace; | |
f17d9474 | 1988 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1989 | |
1990 | if (bitsize != 0) | |
1991 | { | |
1992 | /* Just cover the bytes that make up the bitfield. */ | |
1993 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1994 | } | |
1995 | else | |
1996 | loc->length = TYPE_LENGTH (value_type (v)); | |
1997 | ||
a5606eee VP |
1998 | loc->watchpoint_type = type; |
1999 | } | |
2000 | } | |
9fa40276 TJB |
2001 | } |
2002 | ||
2003 | /* Change the type of breakpoint between hardware assisted or | |
2004 | an ordinary watchpoint depending on the hardware support | |
2005 | and free hardware slots. REPARSE is set when the inferior | |
2006 | is started. */ | |
a9634178 | 2007 | if (reparse) |
9fa40276 | 2008 | { |
e09342b5 | 2009 | int reg_cnt; |
9fa40276 TJB |
2010 | enum bp_loc_type loc_type; |
2011 | struct bp_location *bl; | |
a5606eee | 2012 | |
a9634178 | 2013 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2014 | |
2015 | if (reg_cnt) | |
9fa40276 TJB |
2016 | { |
2017 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2018 | enum bptype type; |
9fa40276 | 2019 | |
a9634178 TJB |
2020 | /* Use an exact watchpoint when there's only one memory region to be |
2021 | watched, and only one debug register is needed to watch it. */ | |
2022 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2023 | ||
9fa40276 | 2024 | /* We need to determine how many resources are already |
e09342b5 TJB |
2025 | used for all other hardware watchpoints plus this one |
2026 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2027 | this watchpoint in as well. */ |
2028 | ||
2029 | /* If this is a software watchpoint, we try to turn it | |
2030 | to a hardware one -- count resources as if B was of | |
2031 | hardware watchpoint type. */ | |
c1fc2657 | 2032 | type = b->type; |
a1398e0c PA |
2033 | if (type == bp_watchpoint) |
2034 | type = bp_hardware_watchpoint; | |
2035 | ||
2036 | /* This watchpoint may or may not have been placed on | |
2037 | the list yet at this point (it won't be in the list | |
2038 | if we're trying to create it for the first time, | |
2039 | through watch_command), so always account for it | |
2040 | manually. */ | |
2041 | ||
2042 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 2043 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
2044 | |
2045 | /* Add in the resources needed for B. */ | |
c1fc2657 | 2046 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
2047 | |
2048 | target_resources_ok | |
2049 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2050 | if (target_resources_ok <= 0) |
a9634178 | 2051 | { |
c1fc2657 | 2052 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
2053 | |
2054 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2055 | error (_("Target does not support this type of " |
2056 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2057 | else if (target_resources_ok < 0 && !sw_mode) |
2058 | error (_("There are not enough available hardware " | |
2059 | "resources for this watchpoint.")); | |
a1398e0c PA |
2060 | |
2061 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 2062 | b->type = bp_watchpoint; |
a1398e0c PA |
2063 | } |
2064 | else | |
2065 | { | |
2066 | /* If this was a software watchpoint, we've just | |
2067 | found we have enough resources to turn it to a | |
2068 | hardware watchpoint. Otherwise, this is a | |
2069 | nop. */ | |
c1fc2657 | 2070 | b->type = type; |
a9634178 | 2071 | } |
9fa40276 | 2072 | } |
c1fc2657 | 2073 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
2074 | { |
2075 | if (!can_use_hw_watchpoints) | |
2076 | error (_("Can't set read/access watchpoint when " | |
2077 | "hardware watchpoints are disabled.")); | |
2078 | else | |
2079 | error (_("Expression cannot be implemented with " | |
2080 | "read/access watchpoint.")); | |
2081 | } | |
9fa40276 | 2082 | else |
c1fc2657 | 2083 | b->type = bp_watchpoint; |
9fa40276 | 2084 | |
c1fc2657 | 2085 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 2086 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 2087 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
2088 | bl->loc_type = loc_type; |
2089 | } | |
2090 | ||
c7437ca6 PA |
2091 | /* If a software watchpoint is not watching any memory, then the |
2092 | above left it without any location set up. But, | |
2093 | bpstat_stop_status requires a location to be able to report | |
2094 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
2095 | if (b->type == bp_watchpoint && b->loc == NULL) |
2096 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
2097 | } |
2098 | else if (!within_current_scope) | |
7270d8f2 | 2099 | { |
ac74f770 MS |
2100 | printf_filtered (_("\ |
2101 | Watchpoint %d deleted because the program has left the block\n\ | |
2102 | in which its expression is valid.\n"), | |
c1fc2657 | 2103 | b->number); |
d0fb5eae | 2104 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2105 | } |
a5606eee VP |
2106 | |
2107 | /* Restore the selected frame. */ | |
66076460 DJ |
2108 | if (frame_saved) |
2109 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2110 | } |
2111 | ||
a5606eee | 2112 | |
74960c60 | 2113 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2114 | inserted in the inferior. We don't differentiate the type of BL's owner |
2115 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2116 | breakpoint_ops is not defined, because in insert_bp_location, | |
2117 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2118 | static int |
35df4500 | 2119 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2120 | { |
35df4500 | 2121 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2122 | return 0; |
2123 | ||
35df4500 | 2124 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2125 | return 0; |
2126 | ||
b5fa468f TBA |
2127 | if (!bl->enabled || bl->disabled_by_cond |
2128 | || bl->shlib_disabled || bl->duplicate) | |
74960c60 VP |
2129 | return 0; |
2130 | ||
f8eba3c6 TT |
2131 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2132 | return 0; | |
2133 | ||
56710373 PA |
2134 | /* This is set for example, when we're attached to the parent of a |
2135 | vfork, and have detached from the child. The child is running | |
2136 | free, and we expect it to do an exec or exit, at which point the | |
2137 | OS makes the parent schedulable again (and the target reports | |
2138 | that the vfork is done). Until the child is done with the shared | |
2139 | memory region, do not insert breakpoints in the parent, otherwise | |
2140 | the child could still trip on the parent's breakpoints. Since | |
2141 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2142 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2143 | return 0; |
2144 | ||
31e77af2 | 2145 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2146 | location, except if the breakpoint is a single-step breakpoint, |
2147 | and the breakpoint's thread is the thread which is stepping past | |
2148 | a breakpoint. */ | |
31e77af2 PA |
2149 | if ((bl->loc_type == bp_loc_software_breakpoint |
2150 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2151 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2152 | bl->address) |
2153 | /* The single-step breakpoint may be inserted at the location | |
2154 | we're trying to step if the instruction branches to itself. | |
2155 | However, the instruction won't be executed at all and it may | |
2156 | break the semantics of the instruction, for example, the | |
2157 | instruction is a conditional branch or updates some flags. | |
2158 | We can't fix it unless GDB is able to emulate the instruction | |
2159 | or switch to displaced stepping. */ | |
2160 | && !(bl->owner->type == bp_single_step | |
2161 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 | 2162 | { |
1eb8556f SM |
2163 | infrun_debug_printf ("skipping breakpoint: stepping past insn at: %s", |
2164 | paddress (bl->gdbarch, bl->address)); | |
e558d7c1 PA |
2165 | return 0; |
2166 | } | |
31e77af2 | 2167 | |
963f9c80 PA |
2168 | /* Don't insert watchpoints if we're trying to step past the |
2169 | instruction that triggered one. */ | |
2170 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2171 | && stepping_past_nonsteppable_watchpoint ()) | |
2172 | { | |
1eb8556f | 2173 | infrun_debug_printf ("stepping past non-steppable watchpoint. " |
ae1f4d2d | 2174 | "skipping watchpoint at %s:%d", |
1eb8556f | 2175 | paddress (bl->gdbarch, bl->address), bl->length); |
963f9c80 PA |
2176 | return 0; |
2177 | } | |
2178 | ||
74960c60 VP |
2179 | return 1; |
2180 | } | |
2181 | ||
934709f0 PW |
2182 | /* Same as should_be_inserted but does the check assuming |
2183 | that the location is not duplicated. */ | |
2184 | ||
2185 | static int | |
2186 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2187 | { | |
2188 | int result; | |
2189 | const int save_duplicate = bl->duplicate; | |
2190 | ||
2191 | bl->duplicate = 0; | |
2192 | result = should_be_inserted (bl); | |
2193 | bl->duplicate = save_duplicate; | |
2194 | return result; | |
2195 | } | |
2196 | ||
b775012e LM |
2197 | /* Parses a conditional described by an expression COND into an |
2198 | agent expression bytecode suitable for evaluation | |
2199 | by the bytecode interpreter. Return NULL if there was | |
2200 | any error during parsing. */ | |
2201 | ||
833177a4 | 2202 | static agent_expr_up |
b775012e LM |
2203 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2204 | { | |
833177a4 | 2205 | if (cond == NULL) |
b775012e LM |
2206 | return NULL; |
2207 | ||
833177a4 PA |
2208 | agent_expr_up aexpr; |
2209 | ||
b775012e LM |
2210 | /* We don't want to stop processing, so catch any errors |
2211 | that may show up. */ | |
a70b8144 | 2212 | try |
b775012e | 2213 | { |
036e657b | 2214 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2215 | } |
2216 | ||
230d2906 | 2217 | catch (const gdb_exception_error &ex) |
b775012e LM |
2218 | { |
2219 | /* If we got here, it means the condition could not be parsed to a valid | |
2220 | bytecode expression and thus can't be evaluated on the target's side. | |
2221 | It's no use iterating through the conditions. */ | |
b775012e LM |
2222 | } |
2223 | ||
2224 | /* We have a valid agent expression. */ | |
2225 | return aexpr; | |
2226 | } | |
2227 | ||
2228 | /* Based on location BL, create a list of breakpoint conditions to be | |
2229 | passed on to the target. If we have duplicated locations with different | |
2230 | conditions, we will add such conditions to the list. The idea is that the | |
2231 | target will evaluate the list of conditions and will only notify GDB when | |
2232 | one of them is true. */ | |
2233 | ||
2234 | static void | |
2235 | build_target_condition_list (struct bp_location *bl) | |
2236 | { | |
2237 | struct bp_location **locp = NULL, **loc2p; | |
2238 | int null_condition_or_parse_error = 0; | |
2239 | int modified = bl->needs_update; | |
2240 | struct bp_location *loc; | |
2241 | ||
8b4f3082 | 2242 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2243 | bl->target_info.conditions.clear (); |
8b4f3082 | 2244 | |
b775012e LM |
2245 | /* This is only meaningful if the target is |
2246 | evaluating conditions and if the user has | |
2247 | opted for condition evaluation on the target's | |
2248 | side. */ | |
2249 | if (gdb_evaluates_breakpoint_condition_p () | |
2250 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2251 | return; | |
2252 | ||
2253 | /* Do a first pass to check for locations with no assigned | |
7f32a4d5 PA |
2254 | conditions or conditions that fail to parse to a valid agent |
2255 | expression bytecode. If any of these happen, then it's no use to | |
2256 | send conditions to the target since this location will always | |
2257 | trigger and generate a response back to GDB. Note we consider | |
2258 | all locations at the same address irrespective of type, i.e., | |
2259 | even if the locations aren't considered duplicates (e.g., | |
2260 | software breakpoint and hardware breakpoint at the same | |
2261 | address). */ | |
b775012e LM |
2262 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) |
2263 | { | |
2264 | loc = (*loc2p); | |
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 | { | |
2295 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2296 | { | |
2297 | loc = (*loc2p); | |
2298 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2299 | { | |
2300 | /* Only go as far as the first NULL bytecode is | |
2301 | located. */ | |
2302 | if (!loc->cond_bytecode) | |
2303 | return; | |
2304 | ||
833177a4 | 2305 | loc->cond_bytecode.reset (); |
b775012e LM |
2306 | } |
2307 | } | |
2308 | } | |
2309 | ||
7f32a4d5 PA |
2310 | /* No NULL conditions or failed bytecode generation. Build a |
2311 | condition list for this location's address. If we have software | |
2312 | and hardware locations at the same address, they aren't | |
2313 | considered duplicates, but we still marge all the conditions | |
2314 | anyway, as it's simpler, and doesn't really make a practical | |
2315 | difference. */ | |
b775012e LM |
2316 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) |
2317 | { | |
2318 | loc = (*loc2p); | |
2319 | if (loc->cond | |
2320 | && is_breakpoint (loc->owner) | |
2321 | && loc->pspace->num == bl->pspace->num | |
2322 | && loc->owner->enable_state == bp_enabled | |
b5fa468f TBA |
2323 | && loc->enabled |
2324 | && !loc->disabled_by_cond) | |
3cde5c42 PA |
2325 | { |
2326 | /* Add the condition to the vector. This will be used later | |
2327 | to send the conditions to the target. */ | |
2328 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2329 | } | |
b775012e LM |
2330 | } |
2331 | ||
2332 | return; | |
2333 | } | |
2334 | ||
d3ce09f5 SS |
2335 | /* Parses a command described by string CMD into an agent expression |
2336 | bytecode suitable for evaluation by the bytecode interpreter. | |
2337 | Return NULL if there was any error during parsing. */ | |
2338 | ||
833177a4 | 2339 | static agent_expr_up |
d3ce09f5 SS |
2340 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2341 | { | |
bbc13ae3 KS |
2342 | const char *cmdrest; |
2343 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2344 | struct gdbarch *gdbarch = get_current_arch (); |
2345 | ||
833177a4 | 2346 | if (cmd == NULL) |
d3ce09f5 SS |
2347 | return NULL; |
2348 | ||
2349 | cmdrest = cmd; | |
2350 | ||
2351 | if (*cmdrest == ',') | |
2352 | ++cmdrest; | |
f1735a53 | 2353 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2354 | |
2355 | if (*cmdrest++ != '"') | |
2356 | error (_("No format string following the location")); | |
2357 | ||
2358 | format_start = cmdrest; | |
2359 | ||
8e481c3b | 2360 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2361 | |
2362 | format_end = cmdrest; | |
2363 | ||
2364 | if (*cmdrest++ != '"') | |
2365 | error (_("Bad format string, non-terminated '\"'.")); | |
2366 | ||
f1735a53 | 2367 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2368 | |
2369 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2370 | error (_("Invalid argument syntax")); | |
2371 | ||
2372 | if (*cmdrest == ',') | |
2373 | cmdrest++; | |
f1735a53 | 2374 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2375 | |
2376 | /* For each argument, make an expression. */ | |
2377 | ||
8e481c3b | 2378 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2379 | while (*cmdrest != '\0') |
2380 | { | |
bbc13ae3 | 2381 | const char *cmd1; |
d3ce09f5 SS |
2382 | |
2383 | cmd1 = cmdrest; | |
4d01a485 | 2384 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2385 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2386 | cmdrest = cmd1; |
2387 | if (*cmdrest == ',') | |
2388 | ++cmdrest; | |
2389 | } | |
2390 | ||
833177a4 PA |
2391 | agent_expr_up aexpr; |
2392 | ||
d3ce09f5 SS |
2393 | /* We don't want to stop processing, so catch any errors |
2394 | that may show up. */ | |
a70b8144 | 2395 | try |
d3ce09f5 | 2396 | { |
036e657b JB |
2397 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2398 | format_start, format_end - format_start, | |
8e481c3b | 2399 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2400 | } |
230d2906 | 2401 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2402 | { |
2403 | /* If we got here, it means the command could not be parsed to a valid | |
2404 | bytecode expression and thus can't be evaluated on the target's side. | |
2405 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2406 | } |
492d29ea | 2407 | |
d3ce09f5 SS |
2408 | /* We have a valid agent expression, return it. */ |
2409 | return aexpr; | |
2410 | } | |
2411 | ||
2412 | /* Based on location BL, create a list of breakpoint commands to be | |
2413 | passed on to the target. If we have duplicated locations with | |
2414 | different commands, we will add any such to the list. */ | |
2415 | ||
2416 | static void | |
2417 | build_target_command_list (struct bp_location *bl) | |
2418 | { | |
2419 | struct bp_location **locp = NULL, **loc2p; | |
2420 | int null_command_or_parse_error = 0; | |
2421 | int modified = bl->needs_update; | |
2422 | struct bp_location *loc; | |
2423 | ||
3cde5c42 PA |
2424 | /* Clear commands left over from a previous insert. */ |
2425 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2426 | |
41fac0cf | 2427 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2428 | return; |
2429 | ||
41fac0cf PA |
2430 | /* For now, limit to agent-style dprintf breakpoints. */ |
2431 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2432 | return; |
2433 | ||
7f32a4d5 PA |
2434 | /* For now, if we have any location at the same address that isn't a |
2435 | dprintf, don't install the target-side commands, as that would | |
2436 | make the breakpoint not be reported to the core, and we'd lose | |
41fac0cf PA |
2437 | control. */ |
2438 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2439 | { | |
2440 | loc = (*loc2p); | |
2441 | if (is_breakpoint (loc->owner) | |
2442 | && loc->pspace->num == bl->pspace->num | |
2443 | && loc->owner->type != bp_dprintf) | |
2444 | return; | |
2445 | } | |
2446 | ||
d3ce09f5 SS |
2447 | /* Do a first pass to check for locations with no assigned |
2448 | conditions or conditions that fail to parse to a valid agent expression | |
2449 | bytecode. If any of these happen, then it's no use to send conditions | |
2450 | to the target since this location will always trigger and generate a | |
2451 | response back to GDB. */ | |
2452 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2453 | { | |
2454 | loc = (*loc2p); | |
2455 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2456 | { | |
2457 | if (modified) | |
2458 | { | |
d3ce09f5 SS |
2459 | /* Re-parse the commands since something changed. In that |
2460 | case we already freed the command bytecodes (see | |
2461 | force_breakpoint_reinsertion). We just | |
2462 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2463 | loc->cmd_bytecode |
2464 | = parse_cmd_to_aexpr (bl->address, | |
2465 | loc->owner->extra_string); | |
d3ce09f5 SS |
2466 | } |
2467 | ||
2468 | /* If we have a NULL bytecode expression, it means something | |
2469 | went wrong or we have a null command expression. */ | |
2470 | if (!loc->cmd_bytecode) | |
2471 | { | |
2472 | null_command_or_parse_error = 1; | |
2473 | break; | |
2474 | } | |
2475 | } | |
2476 | } | |
2477 | ||
2478 | /* If anything failed, then we're not doing target-side commands, | |
2479 | and so clean up. */ | |
2480 | if (null_command_or_parse_error) | |
2481 | { | |
2482 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2483 | { | |
2484 | loc = (*loc2p); | |
2485 | if (is_breakpoint (loc->owner) | |
2486 | && loc->pspace->num == bl->pspace->num) | |
2487 | { | |
2488 | /* Only go as far as the first NULL bytecode is | |
2489 | located. */ | |
40fb6c5e | 2490 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2491 | return; |
2492 | ||
833177a4 | 2493 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2494 | } |
2495 | } | |
2496 | } | |
2497 | ||
7f32a4d5 PA |
2498 | /* No NULL commands or failed bytecode generation. Build a command |
2499 | list for all duplicate locations at this location's address. | |
2500 | Note that here we must care for whether the breakpoint location | |
2501 | types are considered duplicates, otherwise, say, if we have a | |
2502 | software and hardware location at the same address, the target | |
2503 | could end up running the commands twice. For the moment, we only | |
2504 | support targets-side commands with dprintf, but it doesn't hurt | |
2505 | to be pedantically correct in case that changes. */ | |
d3ce09f5 SS |
2506 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) |
2507 | { | |
2508 | loc = (*loc2p); | |
7f32a4d5 PA |
2509 | if (breakpoint_locations_match (bl, loc) |
2510 | && loc->owner->extra_string | |
d3ce09f5 SS |
2511 | && is_breakpoint (loc->owner) |
2512 | && loc->pspace->num == bl->pspace->num | |
2513 | && loc->owner->enable_state == bp_enabled | |
b5fa468f TBA |
2514 | && loc->enabled |
2515 | && !loc->disabled_by_cond) | |
3cde5c42 PA |
2516 | { |
2517 | /* Add the command to the vector. This will be used later | |
2518 | to send the commands to the target. */ | |
2519 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2520 | } | |
d3ce09f5 SS |
2521 | } |
2522 | ||
2523 | bl->target_info.persist = 0; | |
2524 | /* Maybe flag this location as persistent. */ | |
2525 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2526 | bl->target_info.persist = 1; | |
2527 | } | |
2528 | ||
833b7ab5 YQ |
2529 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2530 | of breakpoint according to ADDR except single-step breakpoint. | |
2531 | Get the kind of single-step breakpoint according to the current | |
2532 | registers state. */ | |
cd6c3b4f YQ |
2533 | |
2534 | static int | |
2535 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2536 | { | |
833b7ab5 YQ |
2537 | if (bl->owner->type == bp_single_step) |
2538 | { | |
2539 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2540 | struct regcache *regcache; | |
2541 | ||
00431a78 | 2542 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2543 | |
2544 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2545 | regcache, addr); | |
2546 | } | |
2547 | else | |
2548 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2549 | } |
2550 | ||
35df4500 TJB |
2551 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2552 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2553 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2554 | Returns 0 for success, 1 if the bp_location type is not supported or |
2555 | -1 for failure. | |
879bfdc2 | 2556 | |
4a64f543 MS |
2557 | NOTE drow/2003-09-09: This routine could be broken down to an |
2558 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2559 | static int |
35df4500 | 2560 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2561 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2562 | int *disabled_breaks, |
dd61ec5c MW |
2563 | int *hw_breakpoint_error, |
2564 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2565 | { |
cc06b668 | 2566 | gdb_exception bp_excpt; |
879bfdc2 | 2567 | |
b775012e | 2568 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2569 | return 0; |
2570 | ||
35c63cd8 JB |
2571 | /* Note we don't initialize bl->target_info, as that wipes out |
2572 | the breakpoint location's shadow_contents if the breakpoint | |
2573 | is still inserted at that location. This in turn breaks | |
2574 | target_read_memory which depends on these buffers when | |
2575 | a memory read is requested at the breakpoint location: | |
2576 | Once the target_info has been wiped, we fail to see that | |
2577 | we have a breakpoint inserted at that address and thus | |
2578 | read the breakpoint instead of returning the data saved in | |
2579 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2580 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2581 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2582 | bl->target_info.length = bl->length; |
8181d85f | 2583 | |
b775012e LM |
2584 | /* When working with target-side conditions, we must pass all the conditions |
2585 | for the same breakpoint address down to the target since GDB will not | |
2586 | insert those locations. With a list of breakpoint conditions, the target | |
2587 | can decide when to stop and notify GDB. */ | |
2588 | ||
2589 | if (is_breakpoint (bl->owner)) | |
2590 | { | |
2591 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2592 | build_target_command_list (bl); |
2593 | /* Reset the modification marker. */ | |
b775012e LM |
2594 | bl->needs_update = 0; |
2595 | } | |
2596 | ||
7f32a4d5 PA |
2597 | /* If "set breakpoint auto-hw" is "on" and a software breakpoint was |
2598 | set at a read-only address, then a breakpoint location will have | |
2599 | been changed to hardware breakpoint before we get here. If it is | |
2600 | "off" however, error out before actually trying to insert the | |
2601 | breakpoint, with a nicer error message. */ | |
35df4500 | 2602 | if (bl->loc_type == bp_loc_software_breakpoint |
7f32a4d5 | 2603 | && !automatic_hardware_breakpoints) |
879bfdc2 | 2604 | { |
7f32a4d5 | 2605 | mem_region *mr = lookup_mem_region (bl->address); |
cc59ec59 | 2606 | |
7f32a4d5 PA |
2607 | if (mr != nullptr && mr->attrib.mode != MEM_RW) |
2608 | { | |
2609 | fprintf_unfiltered (tmp_error_stream, | |
2610 | _("Cannot insert breakpoint %d.\n" | |
2611 | "Cannot set software breakpoint " | |
2612 | "at read-only address %s\n"), | |
2613 | bl->owner->number, | |
2614 | paddress (bl->gdbarch, bl->address)); | |
2615 | return 1; | |
765dc015 | 2616 | } |
7f32a4d5 PA |
2617 | } |
2618 | ||
2619 | if (bl->loc_type == bp_loc_software_breakpoint | |
2620 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2621 | { | |
879bfdc2 DJ |
2622 | /* First check to see if we have to handle an overlay. */ |
2623 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2624 | || bl->section == NULL |
2625 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2626 | { |
2627 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2628 | try |
dd61ec5c | 2629 | { |
0000e5cc PA |
2630 | int val; |
2631 | ||
dd61ec5c | 2632 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2633 | if (val) |
688fca4f | 2634 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2635 | } |
94aeb44b | 2636 | catch (gdb_exception &e) |
dd61ec5c | 2637 | { |
94aeb44b | 2638 | bp_excpt = std::move (e); |
dd61ec5c | 2639 | } |
879bfdc2 DJ |
2640 | } |
2641 | else | |
2642 | { | |
4a64f543 | 2643 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2644 | Shall we set a breakpoint at the LMA? */ |
2645 | if (!overlay_events_enabled) | |
2646 | { | |
2647 | /* Yes -- overlay event support is not active, | |
2648 | so we must try to set a breakpoint at the LMA. | |
2649 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2650 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2651 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2652 | bl->owner->number); |
879bfdc2 DJ |
2653 | else |
2654 | { | |
35df4500 TJB |
2655 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2656 | bl->section); | |
879bfdc2 | 2657 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2658 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2659 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2660 | |
2661 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2662 | try |
0000e5cc PA |
2663 | { |
2664 | int val; | |
2665 | ||
579c6ad9 | 2666 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2667 | = breakpoint_kind (bl, &addr); |
2668 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2669 | val = target_insert_breakpoint (bl->gdbarch, |
2670 | &bl->overlay_target_info); | |
2671 | if (val) | |
688fca4f PA |
2672 | bp_excpt |
2673 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2674 | } |
94aeb44b | 2675 | catch (gdb_exception &e) |
0000e5cc | 2676 | { |
94aeb44b | 2677 | bp_excpt = std::move (e); |
0000e5cc PA |
2678 | } |
2679 | ||
688fca4f | 2680 | if (bp_excpt.reason != 0) |
99361f52 | 2681 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2682 | "Overlay breakpoint %d " |
2683 | "failed: in ROM?\n", | |
35df4500 | 2684 | bl->owner->number); |
879bfdc2 DJ |
2685 | } |
2686 | } | |
2687 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2688 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2689 | { |
2690 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2691 | try |
dda83cd7 | 2692 | { |
0000e5cc PA |
2693 | int val; |
2694 | ||
dda83cd7 | 2695 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2696 | if (val) |
688fca4f | 2697 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dda83cd7 | 2698 | } |
94aeb44b | 2699 | catch (gdb_exception &e) |
dda83cd7 | 2700 | { |
94aeb44b | 2701 | bp_excpt = std::move (e); |
dda83cd7 | 2702 | } |
879bfdc2 DJ |
2703 | } |
2704 | else | |
2705 | { | |
2706 | /* No. This breakpoint will not be inserted. | |
2707 | No error, but do not mark the bp as 'inserted'. */ | |
2708 | return 0; | |
2709 | } | |
2710 | } | |
2711 | ||
688fca4f | 2712 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2713 | { |
2714 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2715 | |
2716 | /* In some cases, we might not be able to insert a | |
2717 | breakpoint in a shared library that has already been | |
2718 | removed, but we have not yet processed the shlib unload | |
2719 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2720 | breakpoint insertion themselves can't tell why the |
2721 | breakpoint insertion failed (e.g., the remote target | |
2722 | doesn't define error codes), so we must treat generic | |
2723 | errors as memory errors. */ | |
688fca4f PA |
2724 | if (bp_excpt.reason == RETURN_ERROR |
2725 | && (bp_excpt.error == GENERIC_ERROR | |
2726 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2727 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2728 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2729 | || shared_objfile_contains_address_p (bl->pspace, |
2730 | bl->address))) | |
879bfdc2 | 2731 | { |
4a64f543 | 2732 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2733 | bl->shlib_disabled = 1; |
76727919 | 2734 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2735 | if (!*disabled_breaks) |
2736 | { | |
2737 | fprintf_unfiltered (tmp_error_stream, | |
2738 | "Cannot insert breakpoint %d.\n", | |
2739 | bl->owner->number); | |
2740 | fprintf_unfiltered (tmp_error_stream, | |
2741 | "Temporarily disabling shared " | |
2742 | "library breakpoints:\n"); | |
2743 | } | |
2744 | *disabled_breaks = 1; | |
879bfdc2 | 2745 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2746 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2747 | return 0; |
879bfdc2 DJ |
2748 | } |
2749 | else | |
879bfdc2 | 2750 | { |
35df4500 | 2751 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2752 | { |
0000e5cc | 2753 | *hw_breakpoint_error = 1; |
688fca4f | 2754 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dda83cd7 SM |
2755 | fprintf_unfiltered (tmp_error_stream, |
2756 | "Cannot insert hardware breakpoint %d%s", | |
2757 | bl->owner->number, | |
688fca4f | 2758 | bp_excpt.message ? ":" : ".\n"); |
dda83cd7 SM |
2759 | if (bp_excpt.message != NULL) |
2760 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2761 | bp_excpt.what ()); |
879bfdc2 DJ |
2762 | } |
2763 | else | |
2764 | { | |
688fca4f | 2765 | if (bp_excpt.message == NULL) |
0000e5cc | 2766 | { |
1ccbe998 | 2767 | std::string message |
0000e5cc PA |
2768 | = memory_error_message (TARGET_XFER_E_IO, |
2769 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2770 | |
2771 | fprintf_unfiltered (tmp_error_stream, | |
2772 | "Cannot insert breakpoint %d.\n" | |
2773 | "%s\n", | |
1ccbe998 | 2774 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2775 | } |
2776 | else | |
2777 | { | |
2778 | fprintf_unfiltered (tmp_error_stream, | |
2779 | "Cannot insert breakpoint %d: %s\n", | |
2780 | bl->owner->number, | |
3d6e9d23 | 2781 | bp_excpt.what ()); |
0000e5cc | 2782 | } |
879bfdc2 | 2783 | } |
0000e5cc | 2784 | return 1; |
879bfdc2 DJ |
2785 | |
2786 | } | |
2787 | } | |
2788 | else | |
35df4500 | 2789 | bl->inserted = 1; |
879bfdc2 | 2790 | |
0000e5cc | 2791 | return 0; |
879bfdc2 DJ |
2792 | } |
2793 | ||
35df4500 | 2794 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2795 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2796 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2797 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2798 | { |
0000e5cc PA |
2799 | int val; |
2800 | ||
77b06cd7 TJB |
2801 | gdb_assert (bl->owner->ops != NULL |
2802 | && bl->owner->ops->insert_location != NULL); | |
2803 | ||
2804 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2805 | |
2806 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2807 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2808 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2809 | { |
2810 | struct bp_location *loc, **loc_temp; | |
2811 | ||
2812 | /* But don't try to insert it, if there's already another | |
2813 | hw_access location that would be considered a duplicate | |
2814 | of this one. */ | |
2815 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2816 | if (loc != bl |
85d721b8 | 2817 | && loc->watchpoint_type == hw_access |
35df4500 | 2818 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2819 | { |
35df4500 TJB |
2820 | bl->duplicate = 1; |
2821 | bl->inserted = 1; | |
2822 | bl->target_info = loc->target_info; | |
2823 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2824 | val = 0; |
2825 | break; | |
2826 | } | |
2827 | ||
2828 | if (val == 1) | |
2829 | { | |
77b06cd7 TJB |
2830 | bl->watchpoint_type = hw_access; |
2831 | val = bl->owner->ops->insert_location (bl); | |
2832 | ||
2833 | if (val) | |
2834 | /* Back to the original value. */ | |
2835 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2836 | } |
2837 | } | |
2838 | ||
35df4500 | 2839 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2840 | } |
2841 | ||
35df4500 | 2842 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2843 | { |
0000e5cc PA |
2844 | int val; |
2845 | ||
77b06cd7 TJB |
2846 | gdb_assert (bl->owner->ops != NULL |
2847 | && bl->owner->ops->insert_location != NULL); | |
2848 | ||
2849 | val = bl->owner->ops->insert_location (bl); | |
2850 | if (val) | |
2851 | { | |
2852 | bl->owner->enable_state = bp_disabled; | |
2853 | ||
2854 | if (val == 1) | |
2855 | warning (_("\ | |
2856 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2857 | of catchpoint."), bl->owner->number); | |
2858 | else | |
2859 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2860 | } | |
2861 | ||
2862 | bl->inserted = (val == 0); | |
1640b821 DJ |
2863 | |
2864 | /* We've already printed an error message if there was a problem | |
2865 | inserting this catchpoint, and we've disabled the catchpoint, | |
2866 | so just return success. */ | |
2867 | return 0; | |
879bfdc2 DJ |
2868 | } |
2869 | ||
2870 | return 0; | |
2871 | } | |
2872 | ||
6c95b8df PA |
2873 | /* This function is called when program space PSPACE is about to be |
2874 | deleted. It takes care of updating breakpoints to not reference | |
2875 | PSPACE anymore. */ | |
2876 | ||
2877 | void | |
2878 | breakpoint_program_space_exit (struct program_space *pspace) | |
2879 | { | |
2880 | struct breakpoint *b, *b_temp; | |
876fa593 | 2881 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2882 | |
2883 | /* Remove any breakpoint that was set through this program space. */ | |
2884 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2885 | { | |
2886 | if (b->pspace == pspace) | |
2887 | delete_breakpoint (b); | |
2888 | } | |
2889 | ||
2890 | /* Breakpoints set through other program spaces could have locations | |
2891 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2892 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2893 | { |
2894 | struct bp_location *tmp; | |
2895 | ||
2896 | if (loc->pspace == pspace) | |
2897 | { | |
2bdf28a0 | 2898 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2899 | if (loc->owner->loc == loc) |
2900 | loc->owner->loc = loc->next; | |
2901 | else | |
2902 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2903 | if (tmp->next == loc) | |
2904 | { | |
2905 | tmp->next = loc->next; | |
2906 | break; | |
2907 | } | |
2908 | } | |
2909 | } | |
2910 | ||
2911 | /* Now update the global location list to permanently delete the | |
2912 | removed locations above. */ | |
44702360 | 2913 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2914 | } |
2915 | ||
74960c60 VP |
2916 | /* Make sure all breakpoints are inserted in inferior. |
2917 | Throws exception on any error. | |
2918 | A breakpoint that is already inserted won't be inserted | |
2919 | again, so calling this function twice is safe. */ | |
2920 | void | |
2921 | insert_breakpoints (void) | |
2922 | { | |
2923 | struct breakpoint *bpt; | |
2924 | ||
2925 | ALL_BREAKPOINTS (bpt) | |
2926 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2927 | { |
2928 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2929 | ||
2930 | update_watchpoint (w, 0 /* don't reparse. */); | |
2931 | } | |
74960c60 | 2932 | |
04086b45 PA |
2933 | /* Updating watchpoints creates new locations, so update the global |
2934 | location list. Explicitly tell ugll to insert locations and | |
7f32a4d5 PA |
2935 | ignore breakpoints_always_inserted_mode. Also, |
2936 | update_global_location_list tries to "upgrade" software | |
2937 | breakpoints to hardware breakpoints to handle "set breakpoint | |
2938 | auto-hw", so we need to call it even if we don't have new | |
2939 | locations. */ | |
04086b45 | 2940 | update_global_location_list (UGLL_INSERT); |
74960c60 VP |
2941 | } |
2942 | ||
20388dd6 YQ |
2943 | /* Invoke CALLBACK for each of bp_location. */ |
2944 | ||
2945 | void | |
2946 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2947 | { | |
2948 | struct bp_location *loc, **loc_tmp; | |
2949 | ||
2950 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2951 | { | |
2952 | callback (loc, NULL); | |
2953 | } | |
2954 | } | |
2955 | ||
b775012e LM |
2956 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2957 | target. It is the case with deleting and disabling of breakpoints when using | |
2958 | always-inserted mode. */ | |
2959 | ||
2960 | static void | |
2961 | update_inserted_breakpoint_locations (void) | |
2962 | { | |
2963 | struct bp_location *bl, **blp_tmp; | |
2964 | int error_flag = 0; | |
2965 | int val = 0; | |
2966 | int disabled_breaks = 0; | |
2967 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2968 | int hw_bp_details_reported = 0; |
b775012e | 2969 | |
d7e74731 | 2970 | string_file tmp_error_stream; |
b775012e LM |
2971 | |
2972 | /* Explicitly mark the warning -- this will only be printed if | |
2973 | there was an error. */ | |
d7e74731 | 2974 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2975 | |
5ed8105e | 2976 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2977 | |
2978 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2979 | { | |
2980 | /* We only want to update software breakpoints and hardware | |
2981 | breakpoints. */ | |
2982 | if (!is_breakpoint (bl->owner)) | |
2983 | continue; | |
2984 | ||
2985 | /* We only want to update locations that are already inserted | |
2986 | and need updating. This is to avoid unwanted insertion during | |
2987 | deletion of breakpoints. */ | |
4daf1902 | 2988 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2989 | continue; |
2990 | ||
2991 | switch_to_program_space_and_thread (bl->pspace); | |
2992 | ||
2993 | /* For targets that support global breakpoints, there's no need | |
2994 | to select an inferior to insert breakpoint to. In fact, even | |
2995 | if we aren't attached to any process yet, we should still | |
2996 | insert breakpoints. */ | |
f5656ead | 2997 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 2998 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
b775012e LM |
2999 | continue; |
3000 | ||
d7e74731 | 3001 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3002 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3003 | if (val) |
3004 | error_flag = val; | |
3005 | } | |
3006 | ||
3007 | if (error_flag) | |
3008 | { | |
223ffa71 | 3009 | target_terminal::ours_for_output (); |
b775012e LM |
3010 | error_stream (tmp_error_stream); |
3011 | } | |
b775012e LM |
3012 | } |
3013 | ||
c30eee59 | 3014 | /* Used when starting or continuing the program. */ |
c906108c | 3015 | |
74960c60 VP |
3016 | static void |
3017 | insert_breakpoint_locations (void) | |
c906108c | 3018 | { |
a5606eee | 3019 | struct breakpoint *bpt; |
35df4500 | 3020 | struct bp_location *bl, **blp_tmp; |
eacd795a | 3021 | int error_flag = 0; |
c906108c | 3022 | int val = 0; |
3fbb6ffa | 3023 | int disabled_breaks = 0; |
81d0cc19 | 3024 | int hw_breakpoint_error = 0; |
dd61ec5c | 3025 | int hw_bp_error_explained_already = 0; |
c906108c | 3026 | |
d7e74731 PA |
3027 | string_file tmp_error_stream; |
3028 | ||
81d0cc19 GS |
3029 | /* Explicitly mark the warning -- this will only be printed if |
3030 | there was an error. */ | |
d7e74731 | 3031 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 3032 | |
5ed8105e | 3033 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3034 | |
35df4500 | 3035 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 3036 | { |
b775012e | 3037 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3038 | continue; |
3039 | ||
4a64f543 MS |
3040 | /* There is no point inserting thread-specific breakpoints if |
3041 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3042 | has BL->OWNER always non-NULL. */ | |
35df4500 | 3043 | if (bl->owner->thread != -1 |
5d5658a1 | 3044 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
3045 | continue; |
3046 | ||
35df4500 | 3047 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3048 | |
3049 | /* For targets that support global breakpoints, there's no need | |
3050 | to select an inferior to insert breakpoint to. In fact, even | |
3051 | if we aren't attached to any process yet, we should still | |
3052 | insert breakpoints. */ | |
f5656ead | 3053 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
55f6301a | 3054 | && (inferior_ptid == null_ptid || !target_has_execution ())) |
6c95b8df PA |
3055 | continue; |
3056 | ||
d7e74731 | 3057 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3058 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3059 | if (val) |
eacd795a | 3060 | error_flag = val; |
879bfdc2 | 3061 | } |
c906108c | 3062 | |
4a64f543 MS |
3063 | /* If we failed to insert all locations of a watchpoint, remove |
3064 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3065 | ALL_BREAKPOINTS (bpt) |
3066 | { | |
3067 | int some_failed = 0; | |
3068 | struct bp_location *loc; | |
3069 | ||
3070 | if (!is_hardware_watchpoint (bpt)) | |
3071 | continue; | |
3072 | ||
d6b74ac4 | 3073 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3074 | continue; |
74960c60 VP |
3075 | |
3076 | if (bpt->disposition == disp_del_at_next_stop) | |
3077 | continue; | |
a5606eee VP |
3078 | |
3079 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3080 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3081 | { |
3082 | some_failed = 1; | |
3083 | break; | |
3084 | } | |
3085 | if (some_failed) | |
3086 | { | |
3087 | for (loc = bpt->loc; loc; loc = loc->next) | |
3088 | if (loc->inserted) | |
834c0d03 | 3089 | remove_breakpoint (loc); |
a5606eee VP |
3090 | |
3091 | hw_breakpoint_error = 1; | |
d7e74731 PA |
3092 | tmp_error_stream.printf ("Could not insert " |
3093 | "hardware watchpoint %d.\n", | |
3094 | bpt->number); | |
eacd795a | 3095 | error_flag = -1; |
a5606eee VP |
3096 | } |
3097 | } | |
3098 | ||
eacd795a | 3099 | if (error_flag) |
81d0cc19 GS |
3100 | { |
3101 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
dda83cd7 | 3102 | message about possibly exhausted resources. */ |
dd61ec5c | 3103 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3104 | { |
d7e74731 | 3105 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3106 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3107 | } |
223ffa71 | 3108 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3109 | error_stream (tmp_error_stream); |
3110 | } | |
c906108c SS |
3111 | } |
3112 | ||
c30eee59 TJB |
3113 | /* Used when the program stops. |
3114 | Returns zero if successful, or non-zero if there was a problem | |
3115 | removing a breakpoint location. */ | |
3116 | ||
c906108c | 3117 | int |
fba45db2 | 3118 | remove_breakpoints (void) |
c906108c | 3119 | { |
35df4500 | 3120 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3121 | int val = 0; |
c906108c | 3122 | |
35df4500 | 3123 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3124 | { |
1e4d1764 | 3125 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3126 | val |= remove_breakpoint (bl); |
c5aa993b | 3127 | } |
3a1bae8e | 3128 | return val; |
c906108c SS |
3129 | } |
3130 | ||
49fa26b0 PA |
3131 | /* When a thread exits, remove breakpoints that are related to |
3132 | that thread. */ | |
3133 | ||
3134 | static void | |
3135 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3136 | { | |
3137 | struct breakpoint *b, *b_tmp; | |
3138 | ||
3139 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3140 | { | |
5d5658a1 | 3141 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3142 | { |
3143 | b->disposition = disp_del_at_next_stop; | |
3144 | ||
3145 | printf_filtered (_("\ | |
43792cf0 PA |
3146 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3147 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3148 | |
3149 | /* Hide it from the user. */ | |
3150 | b->number = 0; | |
3151 | } | |
3152 | } | |
3153 | } | |
3154 | ||
f3869b1a | 3155 | /* See breakpoint.h. */ |
6c95b8df | 3156 | |
f3869b1a | 3157 | void |
00431a78 | 3158 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3159 | { |
35df4500 | 3160 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3161 | int val; |
6c95b8df | 3162 | |
35df4500 | 3163 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3164 | { |
35df4500 | 3165 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3166 | continue; |
3167 | ||
fc126975 | 3168 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3169 | { |
834c0d03 | 3170 | val = remove_breakpoint (bl); |
6c95b8df | 3171 | if (val != 0) |
f3869b1a | 3172 | return; |
6c95b8df PA |
3173 | } |
3174 | } | |
6c95b8df PA |
3175 | } |
3176 | ||
e58b0e63 PA |
3177 | static int internal_breakpoint_number = -1; |
3178 | ||
84f4c1fe PM |
3179 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3180 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3181 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3182 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3183 | breakpoint_count and that value incremented. Internal breakpoints |
3184 | do not set the internal var bpnum. */ | |
3185 | static void | |
3186 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3187 | { | |
3188 | if (internal) | |
3189 | b->number = internal_breakpoint_number--; | |
3190 | else | |
3191 | { | |
3192 | set_breakpoint_count (breakpoint_count + 1); | |
3193 | b->number = breakpoint_count; | |
3194 | } | |
3195 | } | |
3196 | ||
e62c965a | 3197 | static struct breakpoint * |
a6d9a66e | 3198 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3199 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3200 | const struct breakpoint_ops *ops) |
e62c965a | 3201 | { |
51abb421 | 3202 | symtab_and_line sal; |
e62c965a PP |
3203 | sal.pc = address; |
3204 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3205 | sal.pspace = current_program_space; |
e62c965a | 3206 | |
51abb421 | 3207 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3208 | b->number = internal_breakpoint_number--; |
3209 | b->disposition = disp_donttouch; | |
3210 | ||
3211 | return b; | |
3212 | } | |
3213 | ||
17450429 PP |
3214 | static const char *const longjmp_names[] = |
3215 | { | |
3216 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3217 | }; | |
3218 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3219 | ||
3220 | /* Per-objfile data private to breakpoint.c. */ | |
3221 | struct breakpoint_objfile_data | |
3222 | { | |
3223 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3224 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3225 | |
3226 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3227 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3228 | |
28106bc2 | 3229 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3230 | int longjmp_searched = 0; |
28106bc2 | 3231 | |
45461e0d SM |
3232 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3233 | references. */ | |
3234 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3235 | |
17450429 | 3236 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3237 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3238 | |
3239 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3240 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3241 | |
3242 | /* True if we have looked for exception probes. */ | |
43dce439 | 3243 | int exception_searched = 0; |
28106bc2 | 3244 | |
45461e0d SM |
3245 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3246 | references. */ | |
3247 | std::vector<probe *> exception_probes; | |
17450429 PP |
3248 | }; |
3249 | ||
51d3063a TT |
3250 | static const struct objfile_key<breakpoint_objfile_data> |
3251 | breakpoint_objfile_key; | |
17450429 PP |
3252 | |
3253 | /* Minimal symbol not found sentinel. */ | |
3254 | static struct minimal_symbol msym_not_found; | |
3255 | ||
3256 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3257 | ||
3258 | static int | |
3259 | msym_not_found_p (const struct minimal_symbol *msym) | |
3260 | { | |
3261 | return msym == &msym_not_found; | |
3262 | } | |
3263 | ||
3264 | /* Return per-objfile data needed by breakpoint.c. | |
3265 | Allocate the data if necessary. */ | |
3266 | ||
3267 | static struct breakpoint_objfile_data * | |
3268 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3269 | { | |
3270 | struct breakpoint_objfile_data *bp_objfile_data; | |
3271 | ||
51d3063a | 3272 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3273 | if (bp_objfile_data == NULL) |
51d3063a | 3274 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3275 | return bp_objfile_data; |
3276 | } | |
3277 | ||
e62c965a | 3278 | static void |
af02033e | 3279 | create_overlay_event_breakpoint (void) |
e62c965a | 3280 | { |
af02033e | 3281 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3282 | |
2030c079 | 3283 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3284 | { |
3285 | struct breakpoint *b; | |
17450429 PP |
3286 | struct breakpoint_objfile_data *bp_objfile_data; |
3287 | CORE_ADDR addr; | |
67994074 | 3288 | struct explicit_location explicit_loc; |
69de3c6a | 3289 | |
17450429 PP |
3290 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3291 | ||
3b7344d5 | 3292 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3293 | continue; |
3294 | ||
3b7344d5 | 3295 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3296 | { |
3b7344d5 | 3297 | struct bound_minimal_symbol m; |
17450429 PP |
3298 | |
3299 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3300 | if (m.minsym == NULL) |
17450429 PP |
3301 | { |
3302 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3303 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3304 | continue; |
3305 | } | |
3306 | bp_objfile_data->overlay_msym = m; | |
3307 | } | |
e62c965a | 3308 | |
77e371c0 | 3309 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
08feed99 | 3310 | b = create_internal_breakpoint (objfile->arch (), addr, |
dda83cd7 | 3311 | bp_overlay_event, |
06edf0c0 | 3312 | &internal_breakpoint_ops); |
67994074 KS |
3313 | initialize_explicit_location (&explicit_loc); |
3314 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3315 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3316 | |
69de3c6a | 3317 | if (overlay_debugging == ovly_auto) |
dda83cd7 SM |
3318 | { |
3319 | b->enable_state = bp_enabled; | |
3320 | overlay_events_enabled = 1; | |
3321 | } | |
69de3c6a PP |
3322 | else |
3323 | { | |
dda83cd7 SM |
3324 | b->enable_state = bp_disabled; |
3325 | overlay_events_enabled = 0; | |
69de3c6a | 3326 | } |
e62c965a | 3327 | } |
e62c965a PP |
3328 | } |
3329 | ||
0fd8e87f | 3330 | static void |
af02033e | 3331 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3332 | { |
5ed8105e | 3333 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3334 | |
94c93c35 TT |
3335 | for (struct program_space *pspace : program_spaces) |
3336 | { | |
3337 | set_current_program_space (pspace); | |
af02033e | 3338 | |
94c93c35 TT |
3339 | for (objfile *objfile : current_program_space->objfiles ()) |
3340 | { | |
3341 | int i; | |
3342 | struct gdbarch *gdbarch; | |
3343 | struct breakpoint_objfile_data *bp_objfile_data; | |
0fd8e87f | 3344 | |
94c93c35 | 3345 | gdbarch = objfile->arch (); |
0fd8e87f | 3346 | |
94c93c35 | 3347 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3348 | |
94c93c35 TT |
3349 | if (!bp_objfile_data->longjmp_searched) |
3350 | { | |
3351 | std::vector<probe *> ret | |
3352 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3353 | |
94c93c35 TT |
3354 | if (!ret.empty ()) |
3355 | { | |
3356 | /* We are only interested in checking one element. */ | |
3357 | probe *p = ret[0]; | |
aed57c53 | 3358 | |
94c93c35 TT |
3359 | if (!p->can_evaluate_arguments ()) |
3360 | { | |
3361 | /* We cannot use the probe interface here, | |
3362 | because it does not know how to evaluate | |
3363 | arguments. */ | |
3364 | ret.clear (); | |
3365 | } | |
3366 | } | |
3367 | bp_objfile_data->longjmp_probes = ret; | |
3368 | bp_objfile_data->longjmp_searched = 1; | |
3369 | } | |
25f9533e | 3370 | |
94c93c35 TT |
3371 | if (!bp_objfile_data->longjmp_probes.empty ()) |
3372 | { | |
3373 | for (probe *p : bp_objfile_data->longjmp_probes) | |
3374 | { | |
3375 | struct breakpoint *b; | |
3376 | ||
3377 | b = create_internal_breakpoint (gdbarch, | |
3378 | p->get_relocated_address (objfile), | |
3379 | bp_longjmp_master, | |
3380 | &internal_breakpoint_ops); | |
3381 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3382 | b->enable_state = bp_disabled; | |
3383 | } | |
28106bc2 | 3384 | |
94c93c35 TT |
3385 | continue; |
3386 | } | |
28106bc2 | 3387 | |
94c93c35 TT |
3388 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3389 | continue; | |
28106bc2 | 3390 | |
94c93c35 TT |
3391 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
3392 | { | |
3393 | struct breakpoint *b; | |
3394 | const char *func_name; | |
3395 | CORE_ADDR addr; | |
3396 | struct explicit_location explicit_loc; | |
0fd8e87f | 3397 | |
94c93c35 TT |
3398 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
3399 | continue; | |
17450429 | 3400 | |
94c93c35 TT |
3401 | func_name = longjmp_names[i]; |
3402 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3403 | { | |
3404 | struct bound_minimal_symbol m; | |
aed57c53 | 3405 | |
94c93c35 TT |
3406 | m = lookup_minimal_symbol_text (func_name, objfile); |
3407 | if (m.minsym == NULL) | |
3408 | { | |
3409 | /* Prevent future lookups in this objfile. */ | |
3410 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
3411 | continue; | |
3412 | } | |
3413 | bp_objfile_data->longjmp_msym[i] = m; | |
3414 | } | |
17450429 | 3415 | |
94c93c35 TT |
3416 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3417 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3418 | &internal_breakpoint_ops); | |
3419 | initialize_explicit_location (&explicit_loc); | |
3420 | explicit_loc.function_name = ASTRDUP (func_name); | |
3421 | b->location = new_explicit_location (&explicit_loc); | |
3422 | b->enable_state = bp_disabled; | |
3423 | } | |
3424 | } | |
3425 | } | |
0fd8e87f UW |
3426 | } |
3427 | ||
af02033e | 3428 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3429 | static void |
af02033e | 3430 | create_std_terminate_master_breakpoint (void) |
aa7d318d | 3431 | { |
af02033e | 3432 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3433 | |
5ed8105e | 3434 | scoped_restore_current_program_space restore_pspace; |
aa7d318d | 3435 | |
94c93c35 TT |
3436 | for (struct program_space *pspace : program_spaces) |
3437 | { | |
3438 | CORE_ADDR addr; | |
17450429 | 3439 | |
94c93c35 | 3440 | set_current_program_space (pspace); |
17450429 | 3441 | |
94c93c35 TT |
3442 | for (objfile *objfile : current_program_space->objfiles ()) |
3443 | { | |
3444 | struct breakpoint *b; | |
3445 | struct breakpoint_objfile_data *bp_objfile_data; | |
3446 | struct explicit_location explicit_loc; | |
aa7d318d | 3447 | |
94c93c35 | 3448 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3449 | |
94c93c35 TT |
3450 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3451 | continue; | |
17450429 | 3452 | |
94c93c35 TT |
3453 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3454 | { | |
3455 | struct bound_minimal_symbol m; | |
17450429 | 3456 | |
94c93c35 TT |
3457 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3458 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3459 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3460 | { | |
3461 | /* Prevent future lookups in this objfile. */ | |
3462 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3463 | continue; | |
3464 | } | |
3465 | bp_objfile_data->terminate_msym = m; | |
3466 | } | |
aa7d318d | 3467 | |
94c93c35 TT |
3468 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3469 | b = create_internal_breakpoint (objfile->arch (), addr, | |
3470 | bp_std_terminate_master, | |
3471 | &internal_breakpoint_ops); | |
3472 | initialize_explicit_location (&explicit_loc); | |
3473 | explicit_loc.function_name = ASTRDUP (func_name); | |
3474 | b->location = new_explicit_location (&explicit_loc); | |
3475 | b->enable_state = bp_disabled; | |
3476 | } | |
3477 | } | |
aa7d318d TT |
3478 | } |
3479 | ||
186c406b TT |
3480 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3481 | ||
70221824 | 3482 | static void |
186c406b TT |
3483 | create_exception_master_breakpoint (void) |
3484 | { | |
17450429 | 3485 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b | 3486 | |
2030c079 | 3487 | for (objfile *objfile : current_program_space->objfiles ()) |
186c406b | 3488 | { |
17450429 PP |
3489 | struct breakpoint *b; |
3490 | struct gdbarch *gdbarch; | |
3491 | struct breakpoint_objfile_data *bp_objfile_data; | |
3492 | CORE_ADDR addr; | |
67994074 | 3493 | struct explicit_location explicit_loc; |
17450429 PP |
3494 | |
3495 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3496 | ||
28106bc2 SDJ |
3497 | /* We prefer the SystemTap probe point if it exists. */ |
3498 | if (!bp_objfile_data->exception_searched) | |
3499 | { | |
45461e0d SM |
3500 | std::vector<probe *> ret |
3501 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3502 | |
45461e0d | 3503 | if (!ret.empty ()) |
25f9533e SDJ |
3504 | { |
3505 | /* We are only interested in checking one element. */ | |
45461e0d | 3506 | probe *p = ret[0]; |
25f9533e | 3507 | |
935676c9 | 3508 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3509 | { |
3510 | /* We cannot use the probe interface here, because it does | |
3511 | not know how to evaluate arguments. */ | |
45461e0d | 3512 | ret.clear (); |
25f9533e SDJ |
3513 | } |
3514 | } | |
3515 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3516 | bp_objfile_data->exception_searched = 1; |
3517 | } | |
3518 | ||
45461e0d | 3519 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3520 | { |
08feed99 | 3521 | gdbarch = objfile->arch (); |
45461e0d SM |
3522 | |
3523 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3524 | { |
729662a5 | 3525 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3526 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3527 | bp_exception_master, |
3528 | &internal_breakpoint_ops); | |
d28cd78a | 3529 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3530 | b->enable_state = bp_disabled; |
3531 | } | |
3532 | ||
3533 | continue; | |
3534 | } | |
3535 | ||
3536 | /* Otherwise, try the hook function. */ | |
3537 | ||
3b7344d5 | 3538 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3539 | continue; |
3540 | ||
08feed99 | 3541 | gdbarch = objfile->arch (); |
186c406b | 3542 | |
3b7344d5 | 3543 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3544 | { |
3b7344d5 | 3545 | struct bound_minimal_symbol debug_hook; |
186c406b | 3546 | |
17450429 | 3547 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3548 | if (debug_hook.minsym == NULL) |
17450429 | 3549 | { |
3b7344d5 | 3550 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3551 | continue; |
3552 | } | |
3553 | ||
3554 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3555 | } |
17450429 | 3556 | |
77e371c0 | 3557 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3558 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3559 | current_top_target ()); | |
06edf0c0 PA |
3560 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3561 | &internal_breakpoint_ops); | |
67994074 KS |
3562 | initialize_explicit_location (&explicit_loc); |
3563 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3564 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3565 | b->enable_state = bp_disabled; |
186c406b | 3566 | } |
186c406b TT |
3567 | } |
3568 | ||
9ef9e6a6 KS |
3569 | /* Does B have a location spec? */ |
3570 | ||
3571 | static int | |
3572 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3573 | { | |
d28cd78a | 3574 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3575 | } |
3576 | ||
c906108c | 3577 | void |
fba45db2 | 3578 | update_breakpoints_after_exec (void) |
c906108c | 3579 | { |
35df4500 | 3580 | struct breakpoint *b, *b_tmp; |
876fa593 | 3581 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3582 | |
25b22b0a PA |
3583 | /* We're about to delete breakpoints from GDB's lists. If the |
3584 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3585 | writing the breakpoints' "shadow contents" back into memory. The | |
3586 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3587 | do that. Instead, the target is responsible from marking | |
3588 | breakpoints out as soon as it detects an exec. We don't do that | |
3589 | here instead, because there may be other attempts to delete | |
3590 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3591 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3592 | if (bploc->pspace == current_program_space) |
3593 | gdb_assert (!bploc->inserted); | |
c906108c | 3594 | |
35df4500 | 3595 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3596 | { |
6c95b8df PA |
3597 | if (b->pspace != current_program_space) |
3598 | continue; | |
3599 | ||
4a64f543 | 3600 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3601 | if (b->type == bp_shlib_event) |
3602 | { | |
3603 | delete_breakpoint (b); | |
3604 | continue; | |
3605 | } | |
c906108c | 3606 | |
4a64f543 | 3607 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3608 | if (b->type == bp_jit_event) |
3609 | { | |
3610 | delete_breakpoint (b); | |
3611 | continue; | |
3612 | } | |
3613 | ||
1900040c | 3614 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3615 | as must overlay event and longjmp master breakpoints. */ |
3616 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3617 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3618 | || b->type == bp_exception_master) | |
c4093a6a JM |
3619 | { |
3620 | delete_breakpoint (b); | |
3621 | continue; | |
3622 | } | |
3623 | ||
4a64f543 | 3624 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3625 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3626 | { |
3627 | delete_breakpoint (b); | |
3628 | continue; | |
3629 | } | |
3630 | ||
7c16b83e PA |
3631 | /* Just like single-step breakpoints. */ |
3632 | if (b->type == bp_single_step) | |
3633 | { | |
3634 | delete_breakpoint (b); | |
3635 | continue; | |
3636 | } | |
3637 | ||
611c83ae PA |
3638 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3639 | after an exec. */ | |
186c406b | 3640 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3641 | || b->type == bp_longjmp_call_dummy |
186c406b | 3642 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3643 | { |
3644 | delete_breakpoint (b); | |
3645 | continue; | |
3646 | } | |
3647 | ||
ce78b96d JB |
3648 | if (b->type == bp_catchpoint) |
3649 | { | |
dda83cd7 SM |
3650 | /* For now, none of the bp_catchpoint breakpoints need to |
3651 | do anything at this point. In the future, if some of | |
3652 | the catchpoints need to something, we will need to add | |
3653 | a new method, and call this method from here. */ | |
3654 | continue; | |
ce78b96d JB |
3655 | } |
3656 | ||
c5aa993b JM |
3657 | /* bp_finish is a special case. The only way we ought to be able |
3658 | to see one of these when an exec() has happened, is if the user | |
3659 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3660 | carries them to the call-site of the current callee, by setting | |
3661 | a temporary bp there and resuming. But in this case, the finish | |
3662 | will carry them entirely through the vfork & exec. | |
3663 | ||
3664 | We don't want to allow a bp_finish to remain inserted now. But | |
3665 | we can't safely delete it, 'cause finish_command has a handle to | |
3666 | the bp on a bpstat, and will later want to delete it. There's a | |
3667 | chance (and I've seen it happen) that if we delete the bp_finish | |
3668 | here, that its storage will get reused by the time finish_command | |
3669 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3670 | We really must allow finish_command to delete a bp_finish. | |
3671 | ||
e5dd4106 | 3672 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3673 | it's safe to delete something others may have handles to?" |
3674 | problem, what we'll do here is just uninsert the bp_finish, and | |
3675 | let finish_command delete it. | |
3676 | ||
3677 | (We know the bp_finish is "doomed" in the sense that it's | |
3678 | momentary, and will be deleted as soon as finish_command sees | |
3679 | the inferior stopped. So it doesn't matter that the bp's | |
3680 | address is probably bogus in the new a.out, unlike e.g., the | |
3681 | solib breakpoints.) */ | |
c5aa993b | 3682 | |
c5aa993b JM |
3683 | if (b->type == bp_finish) |
3684 | { | |
3685 | continue; | |
3686 | } | |
3687 | ||
3688 | /* Without a symbolic address, we have little hope of the | |
3689 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3690 | a.out. */ |
9ef9e6a6 | 3691 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3692 | { |
3693 | delete_breakpoint (b); | |
3694 | continue; | |
3695 | } | |
c5aa993b | 3696 | } |
c906108c SS |
3697 | } |
3698 | ||
3699 | int | |
d80ee84f | 3700 | detach_breakpoints (ptid_t ptid) |
c906108c | 3701 | { |
35df4500 | 3702 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3703 | int val = 0; |
2989a365 | 3704 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3705 | struct inferior *inf = current_inferior (); |
c5aa993b | 3706 | |
e99b03dc | 3707 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3708 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3709 | |
6c95b8df | 3710 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3711 | inferior_ptid = ptid; |
35df4500 | 3712 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3713 | { |
35df4500 | 3714 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3715 | continue; |
3716 | ||
bd9673a4 PW |
3717 | /* This function must physically remove breakpoints locations |
3718 | from the specified ptid, without modifying the breakpoint | |
3719 | package's state. Locations of type bp_loc_other are only | |
3720 | maintained at GDB side. So, there is no need to remove | |
3721 | these bp_loc_other locations. Moreover, removing these | |
3722 | would modify the breakpoint package's state. */ | |
3723 | if (bl->loc_type == bp_loc_other) | |
3724 | continue; | |
3725 | ||
35df4500 | 3726 | if (bl->inserted) |
b2b6a7da | 3727 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3728 | } |
d03285ec | 3729 | |
3a1bae8e | 3730 | return val; |
c906108c SS |
3731 | } |
3732 | ||
35df4500 | 3733 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3734 | Note that this is used to detach breakpoints from a child fork. |
3735 | When we get here, the child isn't in the inferior list, and neither | |
3736 | do we have objects to represent its address space --- we should | |
35df4500 | 3737 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3738 | |
c906108c | 3739 | static int |
b2b6a7da | 3740 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3741 | { |
3742 | int val; | |
c5aa993b | 3743 | |
35df4500 TJB |
3744 | /* BL is never in moribund_locations by our callers. */ |
3745 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3746 | |
74960c60 VP |
3747 | /* The type of none suggests that owner is actually deleted. |
3748 | This should not ever happen. */ | |
35df4500 | 3749 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3750 | |
35df4500 TJB |
3751 | if (bl->loc_type == bp_loc_software_breakpoint |
3752 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3753 | { |
c02f5703 MS |
3754 | /* "Normal" instruction breakpoint: either the standard |
3755 | trap-instruction bp (bp_breakpoint), or a | |
3756 | bp_hardware_breakpoint. */ | |
3757 | ||
3758 | /* First check to see if we have to handle an overlay. */ | |
3759 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3760 | || bl->section == NULL |
3761 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3762 | { |
3763 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3764 | |
3765 | /* If we're trying to uninsert a memory breakpoint that we | |
3766 | know is set in a dynamic object that is marked | |
3767 | shlib_disabled, then either the dynamic object was | |
3768 | removed with "remove-symbol-file" or with | |
3769 | "nosharedlibrary". In the former case, we don't know | |
3770 | whether another dynamic object might have loaded over the | |
3771 | breakpoint's address -- the user might well let us know | |
3772 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3773 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3774 | list of dynamically loaded objects). If we have the |
3775 | breakpoint's shadow memory, that is, this is a software | |
3776 | breakpoint managed by GDB, check whether the breakpoint | |
3777 | is still inserted in memory, to avoid overwriting wrong | |
3778 | code with stale saved shadow contents. Note that HW | |
3779 | breakpoints don't have shadow memory, as they're | |
3780 | implemented using a mechanism that is not dependent on | |
3781 | being able to modify the target's memory, and as such | |
3782 | they should always be removed. */ | |
3783 | if (bl->shlib_disabled | |
3784 | && bl->target_info.shadow_len != 0 | |
3785 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3786 | val = 0; | |
3787 | else | |
73971819 | 3788 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3789 | } |
c906108c SS |
3790 | else |
3791 | { | |
4a64f543 | 3792 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3793 | Did we set a breakpoint at the LMA? */ |
3794 | if (!overlay_events_enabled) | |
3795 | { | |
3796 | /* Yes -- overlay event support is not active, so we | |
3797 | should have set a breakpoint at the LMA. Remove it. | |
3798 | */ | |
c02f5703 MS |
3799 | /* Ignore any failures: if the LMA is in ROM, we will |
3800 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3801 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3802 | target_remove_hw_breakpoint (bl->gdbarch, | |
3803 | &bl->overlay_target_info); | |
c02f5703 | 3804 | else |
35df4500 | 3805 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3806 | &bl->overlay_target_info, |
3807 | reason); | |
c02f5703 MS |
3808 | } |
3809 | /* Did we set a breakpoint at the VMA? | |
3810 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3811 | if (bl->inserted) |
c906108c | 3812 | { |
c02f5703 MS |
3813 | /* Yes -- remove it. Previously we did not bother to |
3814 | remove the breakpoint if the section had been | |
3815 | unmapped, but let's not rely on that being safe. We | |
3816 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3817 | |
3818 | /* However, we should remove *software* breakpoints only | |
3819 | if the section is still mapped, or else we overwrite | |
3820 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3821 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3822 | || section_is_mapped (bl->section)) | |
73971819 | 3823 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3824 | else |
3825 | val = 0; | |
c906108c | 3826 | } |
c02f5703 MS |
3827 | else |
3828 | { | |
3829 | /* No -- not inserted, so no need to remove. No error. */ | |
3830 | val = 0; | |
3831 | } | |
c906108c | 3832 | } |
879d1e6b | 3833 | |
08351840 PA |
3834 | /* In some cases, we might not be able to remove a breakpoint in |
3835 | a shared library that has already been removed, but we have | |
3836 | not yet processed the shlib unload event. Similarly for an | |
3837 | unloaded add-symbol-file object - the user might not yet have | |
3838 | had the chance to remove-symbol-file it. shlib_disabled will | |
3839 | be set if the library/object has already been removed, but | |
3840 | the breakpoint hasn't been uninserted yet, e.g., after | |
3841 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3842 | always-inserted mode. */ | |
076855f9 | 3843 | if (val |
08351840 PA |
3844 | && (bl->loc_type == bp_loc_software_breakpoint |
3845 | && (bl->shlib_disabled | |
3846 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3847 | || shared_objfile_contains_address_p (bl->pspace, |
3848 | bl->address)))) | |
879d1e6b UW |
3849 | val = 0; |
3850 | ||
c906108c SS |
3851 | if (val) |
3852 | return val; | |
b2b6a7da | 3853 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3854 | } |
35df4500 | 3855 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3856 | { |
77b06cd7 TJB |
3857 | gdb_assert (bl->owner->ops != NULL |
3858 | && bl->owner->ops->remove_location != NULL); | |
3859 | ||
b2b6a7da | 3860 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3861 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3862 | |
c906108c | 3863 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3864 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3865 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3866 | bl->owner->number); |
c906108c | 3867 | } |
35df4500 | 3868 | else if (bl->owner->type == bp_catchpoint |
dda83cd7 SM |
3869 | && breakpoint_enabled (bl->owner) |
3870 | && !bl->duplicate) | |
ce78b96d | 3871 | { |
77b06cd7 TJB |
3872 | gdb_assert (bl->owner->ops != NULL |
3873 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3874 | |
73971819 | 3875 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3876 | if (val) |
3877 | return val; | |
77b06cd7 | 3878 | |
b2b6a7da | 3879 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3880 | } |
c906108c SS |
3881 | |
3882 | return 0; | |
3883 | } | |
3884 | ||
6c95b8df | 3885 | static int |
834c0d03 | 3886 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3887 | { |
35df4500 TJB |
3888 | /* BL is never in moribund_locations by our callers. */ |
3889 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3890 | |
6c95b8df PA |
3891 | /* The type of none suggests that owner is actually deleted. |
3892 | This should not ever happen. */ | |
35df4500 | 3893 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3894 | |
5ed8105e | 3895 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3896 | |
35df4500 | 3897 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3898 | |
5ed8105e | 3899 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3900 | } |
3901 | ||
c906108c SS |
3902 | /* Clear the "inserted" flag in all breakpoints. */ |
3903 | ||
25b22b0a | 3904 | void |
fba45db2 | 3905 | mark_breakpoints_out (void) |
c906108c | 3906 | { |
35df4500 | 3907 | struct bp_location *bl, **blp_tmp; |
c906108c | 3908 | |
35df4500 | 3909 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3910 | if (bl->pspace == current_program_space) |
35df4500 | 3911 | bl->inserted = 0; |
c906108c SS |
3912 | } |
3913 | ||
53a5351d JM |
3914 | /* Clear the "inserted" flag in all breakpoints and delete any |
3915 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3916 | |
3917 | Plus other such housekeeping that has to be done for breakpoints | |
3918 | between runs. | |
3919 | ||
53a5351d JM |
3920 | Note: this function gets called at the end of a run (by |
3921 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3922 | init_wait_for_inferior). */ |
c906108c SS |
3923 | |
3924 | ||
3925 | ||
3926 | void | |
fba45db2 | 3927 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3928 | { |
35df4500 | 3929 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3930 | struct program_space *pspace = current_program_space; |
c906108c | 3931 | |
50c71eaf PA |
3932 | /* If breakpoint locations are shared across processes, then there's |
3933 | nothing to do. */ | |
f5656ead | 3934 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3935 | return; |
3936 | ||
1a853c52 | 3937 | mark_breakpoints_out (); |
075f6582 | 3938 | |
35df4500 | 3939 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3940 | { |
6c95b8df PA |
3941 | if (b->loc && b->loc->pspace != pspace) |
3942 | continue; | |
3943 | ||
c5aa993b JM |
3944 | switch (b->type) |
3945 | { | |
3946 | case bp_call_dummy: | |
e2e4d78b | 3947 | case bp_longjmp_call_dummy: |
c906108c | 3948 | |
c5aa993b | 3949 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3950 | cause problems when the inferior is rerun, so we better get |
3951 | rid of it. */ | |
3952 | ||
3953 | case bp_watchpoint_scope: | |
3954 | ||
3955 | /* Also get rid of scope breakpoints. */ | |
3956 | ||
3957 | case bp_shlib_event: | |
3958 | ||
3959 | /* Also remove solib event breakpoints. Their addresses may | |
3960 | have changed since the last time we ran the program. | |
3961 | Actually we may now be debugging against different target; | |
3962 | and so the solib backend that installed this breakpoint may | |
3963 | not be used in by the target. E.g., | |
3964 | ||
3965 | (gdb) file prog-linux | |
3966 | (gdb) run # native linux target | |
3967 | ... | |
3968 | (gdb) kill | |
3969 | (gdb) file prog-win.exe | |
3970 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3971 | */ | |
c906108c | 3972 | |
f59f708a PA |
3973 | case bp_step_resume: |
3974 | ||
3975 | /* Also remove step-resume breakpoints. */ | |
3976 | ||
7c16b83e PA |
3977 | case bp_single_step: |
3978 | ||
3979 | /* Also remove single-step breakpoints. */ | |
3980 | ||
c5aa993b JM |
3981 | delete_breakpoint (b); |
3982 | break; | |
c906108c | 3983 | |
c5aa993b JM |
3984 | case bp_watchpoint: |
3985 | case bp_hardware_watchpoint: | |
3986 | case bp_read_watchpoint: | |
3987 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3988 | { |
3989 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3990 | |
3a5c3e22 PA |
3991 | /* Likewise for watchpoints on local expressions. */ |
3992 | if (w->exp_valid_block != NULL) | |
3993 | delete_breakpoint (b); | |
63000888 | 3994 | else |
3a5c3e22 | 3995 | { |
63000888 PA |
3996 | /* Get rid of existing locations, which are no longer |
3997 | valid. New ones will be created in | |
3998 | update_watchpoint, when the inferior is restarted. | |
3999 | The next update_global_location_list call will | |
4000 | garbage collect them. */ | |
4001 | b->loc = NULL; | |
4002 | ||
4003 | if (context == inf_starting) | |
4004 | { | |
4005 | /* Reset val field to force reread of starting value in | |
4006 | insert_breakpoints. */ | |
850645cf | 4007 | w->val.reset (nullptr); |
4c1d86d9 | 4008 | w->val_valid = false; |
63000888 PA |
4009 | } |
4010 | } | |
3a5c3e22 | 4011 | } |
c5aa993b JM |
4012 | break; |
4013 | default: | |
c5aa993b JM |
4014 | break; |
4015 | } | |
4016 | } | |
1c5cfe86 PA |
4017 | |
4018 | /* Get rid of the moribund locations. */ | |
1123588c | 4019 | for (bp_location *bl : moribund_locations) |
35df4500 | 4020 | decref_bp_location (&bl); |
1123588c | 4021 | moribund_locations.clear (); |
c906108c SS |
4022 | } |
4023 | ||
6c95b8df PA |
4024 | /* These functions concern about actual breakpoints inserted in the |
4025 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4026 | we need to hop over the bkpt --- so we check for address space | |
4027 | match, not program space. */ | |
4028 | ||
c2c6d25f JM |
4029 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4030 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4031 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4032 | permanent breakpoint. | |
4033 | - When continuing from a location with an ordinary breakpoint, we | |
4034 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4035 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4036 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4037 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4038 | |
c2c6d25f | 4039 | enum breakpoint_here |
accd0bcd | 4040 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4041 | { |
35df4500 | 4042 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4043 | int any_breakpoint_here = 0; |
c906108c | 4044 | |
35df4500 | 4045 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4046 | { |
35df4500 TJB |
4047 | if (bl->loc_type != bp_loc_software_breakpoint |
4048 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4049 | continue; |
4050 | ||
f1310107 | 4051 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 4052 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 4053 | || bl->permanent) |
f1310107 | 4054 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4055 | { |
4056 | if (overlay_debugging | |
35df4500 TJB |
4057 | && section_is_overlay (bl->section) |
4058 | && !section_is_mapped (bl->section)) | |
075f6582 | 4059 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 4060 | else if (bl->permanent) |
075f6582 DJ |
4061 | return permanent_breakpoint_here; |
4062 | else | |
4063 | any_breakpoint_here = 1; | |
4064 | } | |
4065 | } | |
c906108c | 4066 | |
f486487f | 4067 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
4068 | } |
4069 | ||
d35ae833 PA |
4070 | /* See breakpoint.h. */ |
4071 | ||
4072 | int | |
accd0bcd | 4073 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
4074 | CORE_ADDR addr, ULONGEST len) |
4075 | { | |
4076 | struct bp_location *bl, **blp_tmp; | |
4077 | ||
4078 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
4079 | { | |
4080 | if (bl->loc_type != bp_loc_software_breakpoint | |
4081 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
4082 | continue; | |
4083 | ||
4084 | if ((breakpoint_enabled (bl->owner) | |
4085 | || bl->permanent) | |
4086 | && breakpoint_location_address_range_overlap (bl, aspace, | |
4087 | addr, len)) | |
4088 | { | |
4089 | if (overlay_debugging | |
4090 | && section_is_overlay (bl->section) | |
4091 | && !section_is_mapped (bl->section)) | |
4092 | { | |
4093 | /* Unmapped overlay -- can't be a match. */ | |
4094 | continue; | |
4095 | } | |
4096 | ||
4097 | return 1; | |
4098 | } | |
4099 | } | |
4100 | ||
4101 | return 0; | |
4102 | } | |
4103 | ||
1c5cfe86 PA |
4104 | /* Return true if there's a moribund breakpoint at PC. */ |
4105 | ||
4106 | int | |
accd0bcd | 4107 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4108 | { |
1123588c | 4109 | for (bp_location *loc : moribund_locations) |
f1310107 | 4110 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4111 | return 1; |
4112 | ||
4113 | return 0; | |
4114 | } | |
c2c6d25f | 4115 | |
f7ce857f PA |
4116 | /* Returns non-zero iff BL is inserted at PC, in address space |
4117 | ASPACE. */ | |
4118 | ||
4119 | static int | |
4120 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4121 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4122 | { |
4123 | if (bl->inserted | |
4124 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4125 | aspace, pc)) | |
4126 | { | |
4127 | if (overlay_debugging | |
4128 | && section_is_overlay (bl->section) | |
4129 | && !section_is_mapped (bl->section)) | |
4130 | return 0; /* unmapped overlay -- can't be a match */ | |
4131 | else | |
4132 | return 1; | |
4133 | } | |
4134 | return 0; | |
4135 | } | |
4136 | ||
a1fd2fa5 | 4137 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4138 | |
4139 | int | |
accd0bcd | 4140 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4141 | { |
f7ce857f | 4142 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4143 | |
f7ce857f | 4144 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4145 | { |
f7ce857f PA |
4146 | struct bp_location *bl = *blp; |
4147 | ||
35df4500 TJB |
4148 | if (bl->loc_type != bp_loc_software_breakpoint |
4149 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4150 | continue; |
4151 | ||
f7ce857f PA |
4152 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4153 | return 1; | |
c5aa993b | 4154 | } |
c36b740a VP |
4155 | return 0; |
4156 | } | |
4157 | ||
a1fd2fa5 PA |
4158 | /* This function returns non-zero iff there is a software breakpoint |
4159 | inserted at PC. */ | |
c36b740a VP |
4160 | |
4161 | int | |
accd0bcd | 4162 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4163 | CORE_ADDR pc) |
4fa8626c | 4164 | { |
f7ce857f | 4165 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4166 | |
f7ce857f | 4167 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4168 | { |
f7ce857f PA |
4169 | struct bp_location *bl = *blp; |
4170 | ||
35df4500 | 4171 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4172 | continue; |
4173 | ||
f7ce857f PA |
4174 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4175 | return 1; | |
4fa8626c DJ |
4176 | } |
4177 | ||
4178 | return 0; | |
9c02b525 PA |
4179 | } |
4180 | ||
4181 | /* See breakpoint.h. */ | |
4182 | ||
4183 | int | |
accd0bcd | 4184 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4185 | CORE_ADDR pc) |
4186 | { | |
4187 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4188 | |
4189 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4190 | { | |
4191 | struct bp_location *bl = *blp; | |
4192 | ||
4193 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4194 | continue; | |
4195 | ||
4196 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4197 | return 1; | |
4198 | } | |
4199 | ||
4200 | return 0; | |
4fa8626c DJ |
4201 | } |
4202 | ||
9093389c | 4203 | int |
accd0bcd | 4204 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4205 | CORE_ADDR addr, ULONGEST len) |
4206 | { | |
4207 | struct breakpoint *bpt; | |
4208 | ||
4209 | ALL_BREAKPOINTS (bpt) | |
4210 | { | |
4211 | struct bp_location *loc; | |
4212 | ||
4213 | if (bpt->type != bp_hardware_watchpoint | |
4214 | && bpt->type != bp_access_watchpoint) | |
4215 | continue; | |
4216 | ||
4217 | if (!breakpoint_enabled (bpt)) | |
4218 | continue; | |
4219 | ||
4220 | for (loc = bpt->loc; loc; loc = loc->next) | |
4221 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4222 | { | |
4223 | CORE_ADDR l, h; | |
4224 | ||
4225 | /* Check for intersection. */ | |
768adc05 PA |
4226 | l = std::max<CORE_ADDR> (loc->address, addr); |
4227 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4228 | if (l < h) |
4229 | return 1; | |
4230 | } | |
4231 | } | |
4232 | return 0; | |
4233 | } | |
c5aa993b | 4234 | |
f2478a7e | 4235 | /* See breakpoint.h. */ |
c906108c | 4236 | |
f2478a7e SM |
4237 | bool |
4238 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4239 | { |
f2478a7e | 4240 | return (b->type == bp_catchpoint); |
c906108c SS |
4241 | } |
4242 | ||
c906108c SS |
4243 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4244 | Also free any storage that is part of a bpstat. */ | |
4245 | ||
4246 | void | |
fba45db2 | 4247 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4248 | { |
4249 | bpstat p; | |
4250 | bpstat q; | |
4251 | ||
4252 | if (bsp == 0) | |
4253 | return; | |
4254 | p = *bsp; | |
4255 | while (p != NULL) | |
4256 | { | |
4257 | q = p->next; | |
04afa70c | 4258 | delete p; |
c906108c SS |
4259 | p = q; |
4260 | } | |
4261 | *bsp = NULL; | |
4262 | } | |
4263 | ||
04afa70c TT |
4264 | bpstats::bpstats (const bpstats &other) |
4265 | : next (NULL), | |
4266 | bp_location_at (other.bp_location_at), | |
4267 | breakpoint_at (other.breakpoint_at), | |
4268 | commands (other.commands), | |
04afa70c TT |
4269 | print (other.print), |
4270 | stop (other.stop), | |
4271 | print_it (other.print_it) | |
4272 | { | |
850645cf TT |
4273 | if (other.old_val != NULL) |
4274 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c TT |
4275 | } |
4276 | ||
c906108c SS |
4277 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4278 | is part of the bpstat is copied as well. */ | |
4279 | ||
4280 | bpstat | |
fba45db2 | 4281 | bpstat_copy (bpstat bs) |
c906108c SS |
4282 | { |
4283 | bpstat p = NULL; | |
4284 | bpstat tmp; | |
4285 | bpstat retval = NULL; | |
4286 | ||
4287 | if (bs == NULL) | |
4288 | return bs; | |
4289 | ||
4290 | for (; bs != NULL; bs = bs->next) | |
4291 | { | |
04afa70c | 4292 | tmp = new bpstats (*bs); |
31cc81e9 | 4293 | |
c906108c SS |
4294 | if (p == NULL) |
4295 | /* This is the first thing in the chain. */ | |
4296 | retval = tmp; | |
4297 | else | |
4298 | p->next = tmp; | |
4299 | p = tmp; | |
4300 | } | |
4301 | p->next = NULL; | |
4302 | return retval; | |
4303 | } | |
4304 | ||
4a64f543 | 4305 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4306 | |
4307 | bpstat | |
fba45db2 | 4308 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4309 | { |
c5aa993b JM |
4310 | if (bsp == NULL) |
4311 | return NULL; | |
c906108c | 4312 | |
c5aa993b JM |
4313 | for (; bsp != NULL; bsp = bsp->next) |
4314 | { | |
f431efe5 | 4315 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4316 | return bsp; |
4317 | } | |
c906108c SS |
4318 | return NULL; |
4319 | } | |
4320 | ||
ab04a2af TT |
4321 | /* See breakpoint.h. */ |
4322 | ||
4c462cb0 | 4323 | bool |
427cd150 | 4324 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4325 | { |
ab04a2af TT |
4326 | for (; bsp != NULL; bsp = bsp->next) |
4327 | { | |
427cd150 TT |
4328 | if (bsp->breakpoint_at == NULL) |
4329 | { | |
4330 | /* A moribund location can never explain a signal other than | |
4331 | GDB_SIGNAL_TRAP. */ | |
4332 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4333 | return true; |
427cd150 TT |
4334 | } |
4335 | else | |
47591c29 PA |
4336 | { |
4337 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4338 | sig)) | |
4c462cb0 | 4339 | return true; |
47591c29 | 4340 | } |
ab04a2af TT |
4341 | } |
4342 | ||
4c462cb0 | 4343 | return false; |
ab04a2af TT |
4344 | } |
4345 | ||
4a64f543 MS |
4346 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4347 | stopped at. *BSP upon return is a bpstat which points to the | |
4348 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4349 | good for anything but further calls to bpstat_num). | |
4350 | ||
8671a17b PA |
4351 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4352 | Return -1 if stopped at a breakpoint that has been deleted since | |
4353 | we set it. | |
4354 | Return 1 otherwise. */ | |
c906108c SS |
4355 | |
4356 | int | |
8671a17b | 4357 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4358 | { |
4359 | struct breakpoint *b; | |
4360 | ||
4361 | if ((*bsp) == NULL) | |
4362 | return 0; /* No more breakpoint values */ | |
8671a17b | 4363 | |
4a64f543 MS |
4364 | /* We assume we'll never have several bpstats that correspond to a |
4365 | single breakpoint -- otherwise, this function might return the | |
4366 | same number more than once and this will look ugly. */ | |
f431efe5 | 4367 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4368 | *bsp = (*bsp)->next; |
4369 | if (b == NULL) | |
4370 | return -1; /* breakpoint that's been deleted since */ | |
4371 | ||
4372 | *num = b->number; /* We have its number */ | |
4373 | return 1; | |
c906108c SS |
4374 | } |
4375 | ||
e93ca019 | 4376 | /* See breakpoint.h. */ |
c906108c SS |
4377 | |
4378 | void | |
e93ca019 | 4379 | bpstat_clear_actions (void) |
c906108c | 4380 | { |
e93ca019 JK |
4381 | bpstat bs; |
4382 | ||
00431a78 | 4383 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4384 | return; |
4385 | ||
00431a78 | 4386 | thread_info *tp = inferior_thread (); |
e93ca019 | 4387 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4388 | { |
d1b0a7bf | 4389 | bs->commands = NULL; |
850645cf | 4390 | bs->old_val.reset (nullptr); |
c906108c SS |
4391 | } |
4392 | } | |
4393 | ||
f3b1572e PA |
4394 | /* Called when a command is about to proceed the inferior. */ |
4395 | ||
4396 | static void | |
4397 | breakpoint_about_to_proceed (void) | |
4398 | { | |
d7e15655 | 4399 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4400 | { |
4401 | struct thread_info *tp = inferior_thread (); | |
4402 | ||
4403 | /* Allow inferior function calls in breakpoint commands to not | |
4404 | interrupt the command list. When the call finishes | |
4405 | successfully, the inferior will be standing at the same | |
4406 | breakpoint as if nothing happened. */ | |
16c381f0 | 4407 | if (tp->control.in_infcall) |
f3b1572e PA |
4408 | return; |
4409 | } | |
4410 | ||
4411 | breakpoint_proceeded = 1; | |
4412 | } | |
4413 | ||
abf85f46 JK |
4414 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4415 | or its equivalent. */ | |
4416 | ||
4417 | static int | |
4418 | command_line_is_silent (struct command_line *cmd) | |
4419 | { | |
4f45d445 | 4420 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4421 | } |
4422 | ||
4a64f543 MS |
4423 | /* Execute all the commands associated with all the breakpoints at |
4424 | this location. Any of these commands could cause the process to | |
4425 | proceed beyond this point, etc. We look out for such changes by | |
4426 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4427 | |
347bddb7 PA |
4428 | Returns true if a breakpoint command resumed the inferior. In that |
4429 | case, it is the caller's responsibility to recall it again with the | |
4430 | bpstat of the current thread. */ | |
4431 | ||
4432 | static int | |
4433 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4434 | { |
4435 | bpstat bs; | |
347bddb7 | 4436 | int again = 0; |
c906108c SS |
4437 | |
4438 | /* Avoid endless recursion if a `source' command is contained | |
4439 | in bs->commands. */ | |
4440 | if (executing_breakpoint_commands) | |
347bddb7 | 4441 | return 0; |
c906108c | 4442 | |
81b1e71c TT |
4443 | scoped_restore save_executing |
4444 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4445 | |
1ac32117 | 4446 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4447 | |
4a64f543 | 4448 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4449 | bs = *bsp; |
4450 | ||
4451 | breakpoint_proceeded = 0; | |
4452 | for (; bs != NULL; bs = bs->next) | |
4453 | { | |
d1b0a7bf | 4454 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4455 | |
4456 | /* Take ownership of the BSP's command tree, if it has one. | |
4457 | ||
dda83cd7 SM |
4458 | The command tree could legitimately contain commands like |
4459 | 'step' and 'next', which call clear_proceed_status, which | |
4460 | frees stop_bpstat's command tree. To make sure this doesn't | |
4461 | free the tree we're executing out from under us, we need to | |
4462 | take ownership of the tree ourselves. Since a given bpstat's | |
4463 | commands are only executed once, we don't need to copy it; we | |
4464 | can clear the pointer in the bpstat, and make sure we free | |
4465 | the tree when we're done. */ | |
d1b0a7bf | 4466 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4467 | bs->commands = NULL; |
d1b0a7bf TT |
4468 | if (ccmd != NULL) |
4469 | cmd = ccmd.get (); | |
abf85f46 JK |
4470 | if (command_line_is_silent (cmd)) |
4471 | { | |
4472 | /* The action has been already done by bpstat_stop_status. */ | |
4473 | cmd = cmd->next; | |
4474 | } | |
6c50ab1c | 4475 | |
c906108c SS |
4476 | while (cmd != NULL) |
4477 | { | |
4478 | execute_control_command (cmd); | |
4479 | ||
4480 | if (breakpoint_proceeded) | |
4481 | break; | |
4482 | else | |
4483 | cmd = cmd->next; | |
4484 | } | |
6c50ab1c | 4485 | |
c906108c | 4486 | if (breakpoint_proceeded) |
32c1e744 | 4487 | { |
cb814510 | 4488 | if (current_ui->async) |
347bddb7 PA |
4489 | /* If we are in async mode, then the target might be still |
4490 | running, not stopped at any breakpoint, so nothing for | |
4491 | us to do here -- just return to the event loop. */ | |
4492 | ; | |
32c1e744 VP |
4493 | else |
4494 | /* In sync mode, when execute_control_command returns | |
4495 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4496 | Breakpoint commands for that stop were not run, since |
4497 | execute_command does not run breakpoint commands -- | |
4498 | only command_line_handler does, but that one is not | |
4499 | involved in execution of breakpoint commands. So, we | |
4500 | can now execute breakpoint commands. It should be | |
4501 | noted that making execute_command do bpstat actions is | |
4502 | not an option -- in this case we'll have recursive | |
4503 | invocation of bpstat for each breakpoint with a | |
4504 | command, and can easily blow up GDB stack. Instead, we | |
4505 | return true, which will trigger the caller to recall us | |
4506 | with the new stop_bpstat. */ | |
4507 | again = 1; | |
4508 | break; | |
32c1e744 | 4509 | } |
c906108c | 4510 | } |
347bddb7 PA |
4511 | return again; |
4512 | } | |
4513 | ||
00431a78 PA |
4514 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4515 | one, is alive and has execution. Return NULL otherwise. */ | |
4516 | ||
4517 | static thread_info * | |
4518 | get_bpstat_thread () | |
4519 | { | |
55f6301a | 4520 | if (inferior_ptid == null_ptid || !target_has_execution ()) |
00431a78 PA |
4521 | return NULL; |
4522 | ||
4523 | thread_info *tp = inferior_thread (); | |
4524 | if (tp->state == THREAD_EXITED || tp->executing) | |
4525 | return NULL; | |
4526 | return tp; | |
4527 | } | |
4528 | ||
347bddb7 PA |
4529 | void |
4530 | bpstat_do_actions (void) | |
4531 | { | |
694c6bf5 | 4532 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4533 | thread_info *tp; |
353d1d73 | 4534 | |
347bddb7 | 4535 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4536 | while ((tp = get_bpstat_thread ()) != NULL) |
4537 | { | |
4538 | /* Since in sync mode, bpstat_do_actions may resume the | |
4539 | inferior, and only return when it is stopped at the next | |
4540 | breakpoint, we keep doing breakpoint actions until it returns | |
4541 | false to indicate the inferior was not resumed. */ | |
4542 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4543 | break; | |
4544 | } | |
353d1d73 | 4545 | |
694c6bf5 | 4546 | cleanup_if_error.release (); |
c906108c SS |
4547 | } |
4548 | ||
fa4727a6 DJ |
4549 | /* Print out the (old or new) value associated with a watchpoint. */ |
4550 | ||
4551 | static void | |
4552 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4553 | { | |
4554 | if (val == NULL) | |
7f6aba03 | 4555 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4556 | else |
79a45b7d TT |
4557 | { |
4558 | struct value_print_options opts; | |
4559 | get_user_print_options (&opts); | |
4560 | value_print (val, stream, &opts); | |
4561 | } | |
fa4727a6 DJ |
4562 | } |
4563 | ||
f303dbd6 PA |
4564 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4565 | debugging multiple threads. */ | |
4566 | ||
4567 | void | |
4568 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4569 | { | |
112e8700 | 4570 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4571 | return; |
4572 | ||
112e8700 | 4573 | uiout->text ("\n"); |
f303dbd6 PA |
4574 | |
4575 | if (show_thread_that_caused_stop ()) | |
4576 | { | |
4577 | const char *name; | |
4578 | struct thread_info *thr = inferior_thread (); | |
4579 | ||
112e8700 | 4580 | uiout->text ("Thread "); |
33eca680 | 4581 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 PA |
4582 | |
4583 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4584 | if (name != NULL) | |
4585 | { | |
112e8700 | 4586 | uiout->text (" \""); |
33eca680 | 4587 | uiout->field_string ("name", name); |
112e8700 | 4588 | uiout->text ("\""); |
f303dbd6 PA |
4589 | } |
4590 | ||
112e8700 | 4591 | uiout->text (" hit "); |
f303dbd6 PA |
4592 | } |
4593 | } | |
4594 | ||
e514a9d6 | 4595 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4596 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4597 | 'print_it' in the bpstat structure. Under some circumstances we |
4598 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4599 | normal_stop(). */ |
e514a9d6 JM |
4600 | |
4601 | static enum print_stop_action | |
4602 | print_bp_stop_message (bpstat bs) | |
4603 | { | |
4604 | switch (bs->print_it) | |
4605 | { | |
4606 | case print_it_noop: | |
4a64f543 | 4607 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4608 | return PRINT_UNKNOWN; |
4609 | break; | |
4610 | ||
4611 | case print_it_done: | |
4612 | /* We still want to print the frame, but we already printed the | |
dda83cd7 | 4613 | relevant messages. */ |
e514a9d6 JM |
4614 | return PRINT_SRC_AND_LOC; |
4615 | break; | |
4616 | ||
4617 | case print_it_normal: | |
4f8d1dc6 | 4618 | { |
f431efe5 PA |
4619 | struct breakpoint *b = bs->breakpoint_at; |
4620 | ||
1a6a67de TJB |
4621 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4622 | which has since been deleted. */ | |
4623 | if (b == NULL) | |
4624 | return PRINT_UNKNOWN; | |
4625 | ||
348d480f PA |
4626 | /* Normal case. Call the breakpoint's print_it method. */ |
4627 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4628 | } |
348d480f | 4629 | break; |
3086aeae | 4630 | |
e514a9d6 | 4631 | default: |
8e65ff28 | 4632 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4633 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4634 | break; |
c906108c | 4635 | } |
c906108c SS |
4636 | } |
4637 | ||
edcc5120 TT |
4638 | /* A helper function that prints a shared library stopped event. */ |
4639 | ||
4640 | static void | |
4641 | print_solib_event (int is_catchpoint) | |
4642 | { | |
6fb16ce6 | 4643 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4644 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4645 | |
4646 | if (!is_catchpoint) | |
4647 | { | |
4648 | if (any_added || any_deleted) | |
112e8700 | 4649 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4650 | else |
112e8700 SM |
4651 | current_uiout->text (_("Stopped due to shared library event (no " |
4652 | "libraries added or removed)\n")); | |
edcc5120 TT |
4653 | } |
4654 | ||
112e8700 SM |
4655 | if (current_uiout->is_mi_like_p ()) |
4656 | current_uiout->field_string ("reason", | |
4657 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4658 | |
4659 | if (any_deleted) | |
4660 | { | |
112e8700 | 4661 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4662 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4663 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4664 | { |
6fb16ce6 SM |
4665 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4666 | ||
edcc5120 | 4667 | if (ix > 0) |
112e8700 SM |
4668 | current_uiout->text (" "); |
4669 | current_uiout->field_string ("library", name); | |
4670 | current_uiout->text ("\n"); | |
edcc5120 | 4671 | } |
edcc5120 TT |
4672 | } |
4673 | ||
4674 | if (any_added) | |
4675 | { | |
112e8700 | 4676 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4677 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4678 | bool first = true; |
52941706 | 4679 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4680 | { |
bcb430e4 | 4681 | if (!first) |
112e8700 | 4682 | current_uiout->text (" "); |
bcb430e4 | 4683 | first = false; |
112e8700 SM |
4684 | current_uiout->field_string ("library", iter->so_name); |
4685 | current_uiout->text ("\n"); | |
edcc5120 | 4686 | } |
edcc5120 TT |
4687 | } |
4688 | } | |
4689 | ||
e514a9d6 JM |
4690 | /* Print a message indicating what happened. This is called from |
4691 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4692 | list - a list of the eventpoints that caused this stop. KIND is |
4693 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4694 | routine calls the generic print routine for printing a message |
4695 | about reasons for stopping. This will print (for example) the | |
4696 | "Breakpoint n," part of the output. The return value of this | |
4697 | routine is one of: | |
c906108c | 4698 | |
4a64f543 | 4699 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4700 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4701 | code to print the location. An example is |
c5aa993b JM |
4702 | "Breakpoint 1, " which should be followed by |
4703 | the location. | |
917317f4 | 4704 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4705 | to also print the location part of the message. |
4706 | An example is the catch/throw messages, which | |
4a64f543 | 4707 | don't require a location appended to the end. |
917317f4 | 4708 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4709 | further info to be printed. */ |
c906108c | 4710 | |
917317f4 | 4711 | enum print_stop_action |
36dfb11c | 4712 | bpstat_print (bpstat bs, int kind) |
c906108c | 4713 | { |
f486487f | 4714 | enum print_stop_action val; |
c5aa993b | 4715 | |
c906108c | 4716 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4717 | (Currently all watchpoints go on the bpstat whether hit or not. |
4718 | That probably could (should) be changed, provided care is taken | |
c906108c | 4719 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4720 | for (; bs; bs = bs->next) |
4721 | { | |
4722 | val = print_bp_stop_message (bs); | |
4723 | if (val == PRINT_SRC_ONLY | |
4724 | || val == PRINT_SRC_AND_LOC | |
4725 | || val == PRINT_NOTHING) | |
4726 | return val; | |
4727 | } | |
c906108c | 4728 | |
36dfb11c TT |
4729 | /* If we had hit a shared library event breakpoint, |
4730 | print_bp_stop_message would print out this message. If we hit an | |
4731 | OS-level shared library event, do the same thing. */ | |
4732 | if (kind == TARGET_WAITKIND_LOADED) | |
4733 | { | |
edcc5120 | 4734 | print_solib_event (0); |
36dfb11c TT |
4735 | return PRINT_NOTHING; |
4736 | } | |
4737 | ||
e514a9d6 | 4738 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4739 | with and nothing was printed. */ |
917317f4 | 4740 | return PRINT_UNKNOWN; |
c906108c SS |
4741 | } |
4742 | ||
bf469271 | 4743 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4744 | |
bf469271 PA |
4745 | static bool |
4746 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4747 | { |
278cd55f | 4748 | struct value *mark = value_mark (); |
bf469271 | 4749 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4750 | |
c906108c | 4751 | value_free_to_mark (mark); |
bf469271 | 4752 | return res; |
c906108c SS |
4753 | } |
4754 | ||
5760d0ab | 4755 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4756 | |
04afa70c TT |
4757 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4758 | : next (NULL), | |
b6433ede | 4759 | bp_location_at (bp_location_ref_ptr::new_reference (bl)), |
04afa70c TT |
4760 | breakpoint_at (bl->owner), |
4761 | commands (NULL), | |
04afa70c TT |
4762 | print (0), |
4763 | stop (0), | |
4764 | print_it (print_it_normal) | |
c906108c | 4765 | { |
04afa70c TT |
4766 | **bs_link_pointer = this; |
4767 | *bs_link_pointer = &next; | |
4768 | } | |
4769 | ||
4770 | bpstats::bpstats () | |
4771 | : next (NULL), | |
04afa70c TT |
4772 | breakpoint_at (NULL), |
4773 | commands (NULL), | |
04afa70c TT |
4774 | print (0), |
4775 | stop (0), | |
4776 | print_it (print_it_normal) | |
4777 | { | |
c906108c SS |
4778 | } |
4779 | \f | |
d983da9c DJ |
4780 | /* The target has stopped with waitstatus WS. Check if any hardware |
4781 | watchpoints have triggered, according to the target. */ | |
4782 | ||
4783 | int | |
4784 | watchpoints_triggered (struct target_waitstatus *ws) | |
4785 | { | |
57810aa7 | 4786 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4787 | CORE_ADDR addr; |
4788 | struct breakpoint *b; | |
4789 | ||
4790 | if (!stopped_by_watchpoint) | |
4791 | { | |
4792 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4793 | as not triggered. */ | |
4794 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4795 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4796 | { |
4797 | struct watchpoint *w = (struct watchpoint *) b; | |
4798 | ||
4799 | w->watchpoint_triggered = watch_triggered_no; | |
4800 | } | |
d983da9c DJ |
4801 | |
4802 | return 0; | |
4803 | } | |
4804 | ||
8b88a78e | 4805 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4806 | { |
4807 | /* We were stopped by a watchpoint, but we don't know where. | |
4808 | Mark all watchpoints as unknown. */ | |
4809 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4810 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4811 | { |
4812 | struct watchpoint *w = (struct watchpoint *) b; | |
4813 | ||
4814 | w->watchpoint_triggered = watch_triggered_unknown; | |
4815 | } | |
d983da9c | 4816 | |
3c4797ba | 4817 | return 1; |
d983da9c DJ |
4818 | } |
4819 | ||
4820 | /* The target could report the data address. Mark watchpoints | |
4821 | affected by this data address as triggered, and all others as not | |
4822 | triggered. */ | |
4823 | ||
4824 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4825 | if (is_hardware_watchpoint (b)) |
d983da9c | 4826 | { |
3a5c3e22 | 4827 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4828 | struct bp_location *loc; |
d983da9c | 4829 | |
3a5c3e22 | 4830 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4831 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4832 | { |
3a5c3e22 | 4833 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4834 | { |
3a5c3e22 PA |
4835 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4836 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4837 | |
4838 | if (newaddr == start) | |
4839 | { | |
3a5c3e22 | 4840 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4841 | break; |
4842 | } | |
4843 | } | |
4844 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4845 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4846 | addr, loc->address, |
4847 | loc->length)) | |
4848 | { | |
3a5c3e22 | 4849 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4850 | break; |
4851 | } | |
4852 | } | |
d983da9c DJ |
4853 | } |
4854 | ||
4855 | return 1; | |
4856 | } | |
4857 | ||
bf469271 PA |
4858 | /* Possible return values for watchpoint_check. */ |
4859 | enum wp_check_result | |
4860 | { | |
4861 | /* The watchpoint has been deleted. */ | |
4862 | WP_DELETED = 1, | |
4863 | ||
4864 | /* The value has changed. */ | |
4865 | WP_VALUE_CHANGED = 2, | |
4866 | ||
4867 | /* The value has not changed. */ | |
4868 | WP_VALUE_NOT_CHANGED = 3, | |
4869 | ||
4870 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4871 | WP_IGNORE = 4, | |
4872 | }; | |
c906108c SS |
4873 | |
4874 | #define BP_TEMPFLAG 1 | |
4875 | #define BP_HARDWAREFLAG 2 | |
4876 | ||
4a64f543 | 4877 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4878 | changed. */ |
553e4c11 | 4879 | |
bf469271 PA |
4880 | static wp_check_result |
4881 | watchpoint_check (bpstat bs) | |
c906108c | 4882 | { |
3a5c3e22 | 4883 | struct watchpoint *b; |
c906108c SS |
4884 | struct frame_info *fr; |
4885 | int within_current_scope; | |
4886 | ||
f431efe5 | 4887 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4888 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4889 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4890 | |
f6bc2008 PA |
4891 | /* If this is a local watchpoint, we only want to check if the |
4892 | watchpoint frame is in scope if the current thread is the thread | |
4893 | that was used to create the watchpoint. */ | |
4894 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4895 | return WP_IGNORE; |
f6bc2008 | 4896 | |
c906108c SS |
4897 | if (b->exp_valid_block == NULL) |
4898 | within_current_scope = 1; | |
4899 | else | |
4900 | { | |
edb3359d DJ |
4901 | struct frame_info *frame = get_current_frame (); |
4902 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4903 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4904 | ||
c9cf6e20 | 4905 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4906 | still in the function but the stack frame has already been |
4907 | invalidated. Since we can't rely on the values of local | |
4908 | variables after the stack has been destroyed, we are treating | |
4909 | the watchpoint in that state as `not changed' without further | |
4910 | checking. Don't mark watchpoints as changed if the current | |
4911 | frame is in an epilogue - even if they are in some other | |
4912 | frame, our view of the stack is likely to be wrong and | |
4913 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4914 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4915 | return WP_IGNORE; |
a0f49112 | 4916 | |
101dcfbe | 4917 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4918 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4919 | |
4920 | /* If we've gotten confused in the unwinder, we might have | |
4921 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4922 | if (within_current_scope) |
4923 | { | |
4924 | struct symbol *function; | |
4925 | ||
4926 | function = get_frame_function (fr); | |
4927 | if (function == NULL | |
4928 | || !contained_in (b->exp_valid_block, | |
4929 | SYMBOL_BLOCK_VALUE (function))) | |
4930 | within_current_scope = 0; | |
4931 | } | |
69fbadd5 | 4932 | |
edb3359d | 4933 | if (within_current_scope) |
c906108c SS |
4934 | /* If we end up stopping, the current frame will get selected |
4935 | in normal_stop. So this call to select_frame won't affect | |
4936 | the user. */ | |
0f7d239c | 4937 | select_frame (fr); |
c906108c | 4938 | } |
c5aa993b | 4939 | |
c906108c SS |
4940 | if (within_current_scope) |
4941 | { | |
4a64f543 | 4942 | /* We use value_{,free_to_}mark because it could be a *long* |
dda83cd7 SM |
4943 | time before we return to the command level and call |
4944 | free_all_values. We can't call free_all_values because we | |
4945 | might be in the middle of evaluating a function call. */ | |
c906108c | 4946 | |
0cf6dd15 | 4947 | int pc = 0; |
9c06b0b4 | 4948 | struct value *mark; |
fa4727a6 DJ |
4949 | struct value *new_val; |
4950 | ||
c1fc2657 | 4951 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4952 | /* Since we don't know the exact trigger address (from |
4953 | stopped_data_address), just tell the user we've triggered | |
4954 | a mask watchpoint. */ | |
4955 | return WP_VALUE_CHANGED; | |
4956 | ||
4957 | mark = value_mark (); | |
2e362716 | 4958 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, false); |
218d2fc6 | 4959 | |
bb9d5f81 PP |
4960 | if (b->val_bitsize != 0) |
4961 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4962 | ||
4a64f543 MS |
4963 | /* We use value_equal_contents instead of value_equal because |
4964 | the latter coerces an array to a pointer, thus comparing just | |
4965 | the address of the array instead of its contents. This is | |
4966 | not what we want. */ | |
fa4727a6 | 4967 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4968 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4969 | new_val))) | |
c906108c | 4970 | { |
c906108c | 4971 | bs->old_val = b->val; |
850645cf | 4972 | b->val = release_value (new_val); |
4c1d86d9 | 4973 | b->val_valid = true; |
850645cf TT |
4974 | if (new_val != NULL) |
4975 | value_free_to_mark (mark); | |
c906108c SS |
4976 | return WP_VALUE_CHANGED; |
4977 | } | |
4978 | else | |
4979 | { | |
60e1c644 | 4980 | /* Nothing changed. */ |
c906108c | 4981 | value_free_to_mark (mark); |
c906108c SS |
4982 | return WP_VALUE_NOT_CHANGED; |
4983 | } | |
4984 | } | |
4985 | else | |
4986 | { | |
4987 | /* This seems like the only logical thing to do because | |
dda83cd7 SM |
4988 | if we temporarily ignored the watchpoint, then when |
4989 | we reenter the block in which it is valid it contains | |
4990 | garbage (in the case of a function, it may have two | |
4991 | garbage values, one before and one after the prologue). | |
4992 | So we can't even detect the first assignment to it and | |
4993 | watch after that (since the garbage may or may not equal | |
4994 | the first value assigned). */ | |
348d480f PA |
4995 | /* We print all the stop information in |
4996 | breakpoint_ops->print_it, but in this case, by the time we | |
4997 | call breakpoint_ops->print_it this bp will be deleted | |
4998 | already. So we have no choice but print the information | |
4999 | here. */ | |
468afe6c | 5000 | |
0e454242 | 5001 | SWITCH_THRU_ALL_UIS () |
dda83cd7 | 5002 | { |
468afe6c PA |
5003 | struct ui_out *uiout = current_uiout; |
5004 | ||
112e8700 SM |
5005 | if (uiout->is_mi_like_p ()) |
5006 | uiout->field_string | |
5007 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
5008 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
5009 | "left the block in\n" | |
5010 | "which its expression is valid.\n", | |
5011 | signed_field ("wpnum", b->number)); | |
468afe6c | 5012 | } |
4ce44c66 | 5013 | |
cdac0397 | 5014 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 5015 | b->commands = NULL; |
d0fb5eae | 5016 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5017 | |
5018 | return WP_DELETED; | |
5019 | } | |
5020 | } | |
5021 | ||
18a18393 | 5022 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5023 | breakpoint location BL. This function does not check if we should |
5024 | stop, only if BL explains the stop. */ | |
5025 | ||
18a18393 | 5026 | static int |
6c95b8df | 5027 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 5028 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5029 | const struct target_waitstatus *ws) |
18a18393 VP |
5030 | { |
5031 | struct breakpoint *b = bl->owner; | |
5032 | ||
348d480f | 5033 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5034 | gdb_assert (b != NULL); |
5035 | ||
bd522513 | 5036 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5037 | } |
5038 | ||
3a5c3e22 PA |
5039 | /* Determine if the watched values have actually changed, and we |
5040 | should stop. If not, set BS->stop to 0. */ | |
5041 | ||
18a18393 VP |
5042 | static void |
5043 | bpstat_check_watchpoint (bpstat bs) | |
5044 | { | |
2bdf28a0 | 5045 | const struct bp_location *bl; |
3a5c3e22 | 5046 | struct watchpoint *b; |
2bdf28a0 JK |
5047 | |
5048 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5049 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5050 | gdb_assert (bl != NULL); |
3a5c3e22 | 5051 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5052 | gdb_assert (b != NULL); |
18a18393 | 5053 | |
18a18393 | 5054 | { |
18a18393 VP |
5055 | int must_check_value = 0; |
5056 | ||
c1fc2657 | 5057 | if (b->type == bp_watchpoint) |
18a18393 VP |
5058 | /* For a software watchpoint, we must always check the |
5059 | watched value. */ | |
5060 | must_check_value = 1; | |
5061 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5062 | /* We have a hardware watchpoint (read, write, or access) | |
5063 | and the target earlier reported an address watched by | |
5064 | this watchpoint. */ | |
5065 | must_check_value = 1; | |
5066 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 5067 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
5068 | /* We were stopped by a hardware watchpoint, but the target could |
5069 | not report the data address. We must check the watchpoint's | |
5070 | value. Access and read watchpoints are out of luck; without | |
5071 | a data address, we can't figure it out. */ | |
5072 | must_check_value = 1; | |
3a5c3e22 | 5073 | |
18a18393 VP |
5074 | if (must_check_value) |
5075 | { | |
bf469271 PA |
5076 | wp_check_result e; |
5077 | ||
a70b8144 | 5078 | try |
bf469271 PA |
5079 | { |
5080 | e = watchpoint_check (bs); | |
5081 | } | |
230d2906 | 5082 | catch (const gdb_exception &ex) |
bf469271 PA |
5083 | { |
5084 | exception_fprintf (gdb_stderr, ex, | |
5085 | "Error evaluating expression " | |
5086 | "for watchpoint %d\n", | |
5087 | b->number); | |
5088 | ||
5089 | SWITCH_THRU_ALL_UIS () | |
5090 | { | |
5091 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5092 | b->number); | |
5093 | } | |
5094 | watchpoint_del_at_next_stop (b); | |
5095 | e = WP_DELETED; | |
5096 | } | |
bf469271 | 5097 | |
18a18393 VP |
5098 | switch (e) |
5099 | { | |
5100 | case WP_DELETED: | |
5101 | /* We've already printed what needs to be printed. */ | |
5102 | bs->print_it = print_it_done; | |
5103 | /* Stop. */ | |
5104 | break; | |
60e1c644 PA |
5105 | case WP_IGNORE: |
5106 | bs->print_it = print_it_noop; | |
5107 | bs->stop = 0; | |
5108 | break; | |
18a18393 | 5109 | case WP_VALUE_CHANGED: |
c1fc2657 | 5110 | if (b->type == bp_read_watchpoint) |
18a18393 | 5111 | { |
85d721b8 PA |
5112 | /* There are two cases to consider here: |
5113 | ||
4a64f543 | 5114 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5115 | In that case, trust the target, and always report |
5116 | the watchpoint hit to the user. Even though | |
5117 | reads don't cause value changes, the value may | |
5118 | have changed since the last time it was read, and | |
5119 | since we're not trapping writes, we will not see | |
5120 | those, and as such we should ignore our notion of | |
5121 | old value. | |
5122 | ||
4a64f543 | 5123 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5124 | reads and writes. There are two ways this may |
5125 | happen: | |
5126 | ||
4a64f543 | 5127 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5128 | reads only, but can break on accesses (reads or |
5129 | writes), such as e.g., x86. We detect this case | |
5130 | at the time we try to insert read watchpoints. | |
5131 | ||
4a64f543 | 5132 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5133 | watchpoints, but, the user set an access or write |
5134 | watchpoint watching the same memory as this read | |
5135 | watchpoint. | |
5136 | ||
5137 | If we're watching memory writes as well as reads, | |
5138 | ignore watchpoint hits when we find that the | |
5139 | value hasn't changed, as reads don't cause | |
5140 | changes. This still gives false positives when | |
5141 | the program writes the same value to memory as | |
5142 | what there was already in memory (we will confuse | |
5143 | it for a read), but it's much better than | |
5144 | nothing. */ | |
5145 | ||
5146 | int other_write_watchpoint = 0; | |
5147 | ||
5148 | if (bl->watchpoint_type == hw_read) | |
5149 | { | |
5150 | struct breakpoint *other_b; | |
5151 | ||
5152 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5153 | if (other_b->type == bp_hardware_watchpoint |
5154 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5155 | { |
3a5c3e22 PA |
5156 | struct watchpoint *other_w = |
5157 | (struct watchpoint *) other_b; | |
5158 | ||
5159 | if (other_w->watchpoint_triggered | |
5160 | == watch_triggered_yes) | |
5161 | { | |
5162 | other_write_watchpoint = 1; | |
5163 | break; | |
5164 | } | |
85d721b8 PA |
5165 | } |
5166 | } | |
5167 | ||
5168 | if (other_write_watchpoint | |
5169 | || bl->watchpoint_type == hw_access) | |
5170 | { | |
5171 | /* We're watching the same memory for writes, | |
5172 | and the value changed since the last time we | |
5173 | updated it, so this trap must be for a write. | |
5174 | Ignore it. */ | |
5175 | bs->print_it = print_it_noop; | |
5176 | bs->stop = 0; | |
5177 | } | |
18a18393 VP |
5178 | } |
5179 | break; | |
5180 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5181 | if (b->type == bp_hardware_watchpoint |
5182 | || b->type == bp_watchpoint) | |
18a18393 VP |
5183 | { |
5184 | /* Don't stop: write watchpoints shouldn't fire if | |
5185 | the value hasn't changed. */ | |
5186 | bs->print_it = print_it_noop; | |
5187 | bs->stop = 0; | |
5188 | } | |
5189 | /* Stop. */ | |
5190 | break; | |
5191 | default: | |
5192 | /* Can't happen. */ | |
18a18393 VP |
5193 | break; |
5194 | } | |
5195 | } | |
5196 | else /* must_check_value == 0 */ | |
5197 | { | |
5198 | /* This is a case where some watchpoint(s) triggered, but | |
5199 | not at the address of this watchpoint, or else no | |
5200 | watchpoint triggered after all. So don't print | |
5201 | anything for this watchpoint. */ | |
5202 | bs->print_it = print_it_noop; | |
5203 | bs->stop = 0; | |
5204 | } | |
5205 | } | |
5206 | } | |
5207 | ||
7d4df6a4 DE |
5208 | /* For breakpoints that are currently marked as telling gdb to stop, |
5209 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5210 | of breakpoint referred to by BS. If we should not stop for this |
5211 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5212 | |
18a18393 | 5213 | static void |
00431a78 | 5214 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5215 | { |
2bdf28a0 JK |
5216 | const struct bp_location *bl; |
5217 | struct breakpoint *b; | |
bf469271 PA |
5218 | /* Assume stop. */ |
5219 | bool condition_result = true; | |
7d4df6a4 DE |
5220 | struct expression *cond; |
5221 | ||
5222 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5223 | |
5224 | /* BS is built for existing struct breakpoint. */ | |
b6433ede | 5225 | bl = bs->bp_location_at.get (); |
2bdf28a0 | 5226 | gdb_assert (bl != NULL); |
f431efe5 | 5227 | b = bs->breakpoint_at; |
2bdf28a0 | 5228 | gdb_assert (b != NULL); |
18a18393 | 5229 | |
b775012e LM |
5230 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5231 | need to do so again since GDB does not know if we stopped due to a | |
5232 | breakpoint or a single step breakpoint. */ | |
5233 | ||
18a18393 | 5234 | if (frame_id_p (b->frame_id) |
edb3359d | 5235 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5236 | { |
7d4df6a4 DE |
5237 | bs->stop = 0; |
5238 | return; | |
5239 | } | |
60e1c644 | 5240 | |
12ab52e9 PA |
5241 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5242 | evaluating the condition if this isn't the specified | |
5243 | thread/task. */ | |
00431a78 PA |
5244 | if ((b->thread != -1 && b->thread != thread->global_num) |
5245 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5246 | { |
5247 | bs->stop = 0; | |
5248 | return; | |
5249 | } | |
5250 | ||
6dddc817 DE |
5251 | /* Evaluate extension language breakpoints that have a "stop" method |
5252 | implemented. */ | |
5253 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5254 | |
7d4df6a4 DE |
5255 | if (is_watchpoint (b)) |
5256 | { | |
5257 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5258 | |
4d01a485 | 5259 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5260 | } |
5261 | else | |
4d01a485 | 5262 | cond = bl->cond.get (); |
60e1c644 | 5263 | |
7d4df6a4 DE |
5264 | if (cond && b->disposition != disp_del_at_next_stop) |
5265 | { | |
5266 | int within_current_scope = 1; | |
5267 | struct watchpoint * w; | |
60e1c644 | 5268 | |
7d4df6a4 DE |
5269 | /* We use value_mark and value_free_to_mark because it could |
5270 | be a long time before we return to the command level and | |
5271 | call free_all_values. We can't call free_all_values | |
5272 | because we might be in the middle of evaluating a | |
5273 | function call. */ | |
5274 | struct value *mark = value_mark (); | |
5275 | ||
5276 | if (is_watchpoint (b)) | |
5277 | w = (struct watchpoint *) b; | |
5278 | else | |
5279 | w = NULL; | |
5280 | ||
5281 | /* Need to select the frame, with all that implies so that | |
5282 | the conditions will have the right context. Because we | |
5283 | use the frame, we will not see an inlined function's | |
5284 | variables when we arrive at a breakpoint at the start | |
5285 | of the inlined function; the current frame will be the | |
5286 | call site. */ | |
5287 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5288 | select_frame (get_current_frame ()); | |
5289 | else | |
18a18393 | 5290 | { |
7d4df6a4 DE |
5291 | struct frame_info *frame; |
5292 | ||
5293 | /* For local watchpoint expressions, which particular | |
5294 | instance of a local is being watched matters, so we | |
5295 | keep track of the frame to evaluate the expression | |
5296 | in. To evaluate the condition however, it doesn't | |
5297 | really matter which instantiation of the function | |
5298 | where the condition makes sense triggers the | |
5299 | watchpoint. This allows an expression like "watch | |
5300 | global if q > 10" set in `func', catch writes to | |
5301 | global on all threads that call `func', or catch | |
5302 | writes on all recursive calls of `func' by a single | |
5303 | thread. We simply always evaluate the condition in | |
5304 | the innermost frame that's executing where it makes | |
5305 | sense to evaluate the condition. It seems | |
5306 | intuitive. */ | |
5307 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5308 | if (frame != NULL) | |
5309 | select_frame (frame); | |
5310 | else | |
5311 | within_current_scope = 0; | |
18a18393 | 5312 | } |
7d4df6a4 | 5313 | if (within_current_scope) |
bf469271 | 5314 | { |
a70b8144 | 5315 | try |
bf469271 PA |
5316 | { |
5317 | condition_result = breakpoint_cond_eval (cond); | |
5318 | } | |
230d2906 | 5319 | catch (const gdb_exception &ex) |
bf469271 PA |
5320 | { |
5321 | exception_fprintf (gdb_stderr, ex, | |
5322 | "Error in testing breakpoint condition:\n"); | |
5323 | } | |
bf469271 | 5324 | } |
7d4df6a4 | 5325 | else |
18a18393 | 5326 | { |
7d4df6a4 DE |
5327 | warning (_("Watchpoint condition cannot be tested " |
5328 | "in the current scope")); | |
5329 | /* If we failed to set the right context for this | |
5330 | watchpoint, unconditionally report it. */ | |
18a18393 | 5331 | } |
7d4df6a4 DE |
5332 | /* FIXME-someday, should give breakpoint #. */ |
5333 | value_free_to_mark (mark); | |
18a18393 | 5334 | } |
7d4df6a4 | 5335 | |
bf469271 | 5336 | if (cond && !condition_result) |
7d4df6a4 DE |
5337 | { |
5338 | bs->stop = 0; | |
5339 | } | |
7d4df6a4 DE |
5340 | else if (b->ignore_count > 0) |
5341 | { | |
5342 | b->ignore_count--; | |
5343 | bs->stop = 0; | |
5344 | /* Increase the hit count even though we don't stop. */ | |
5345 | ++(b->hit_count); | |
76727919 | 5346 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5347 | } |
18a18393 VP |
5348 | } |
5349 | ||
1cf4d951 PA |
5350 | /* Returns true if we need to track moribund locations of LOC's type |
5351 | on the current target. */ | |
5352 | ||
5353 | static int | |
5354 | need_moribund_for_location_type (struct bp_location *loc) | |
5355 | { | |
5356 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5357 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5358 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5359 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5360 | } | |
5361 | ||
ddfe970e | 5362 | /* See breakpoint.h. */ |
c906108c SS |
5363 | |
5364 | bpstat | |
ddfe970e | 5365 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5366 | const struct target_waitstatus *ws) |
c906108c | 5367 | { |
ddfe970e | 5368 | struct breakpoint *b; |
5760d0ab | 5369 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5370 | |
429374b8 JK |
5371 | ALL_BREAKPOINTS (b) |
5372 | { | |
1a853c52 | 5373 | if (!breakpoint_enabled (b)) |
429374b8 | 5374 | continue; |
a5606eee | 5375 | |
ddfe970e | 5376 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
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 SS |
5784 | { |
5785 | struct breakpoint *b; | |
cc59ec59 | 5786 | |
c906108c | 5787 | ALL_BREAKPOINTS (b) |
717a8278 | 5788 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 SM |
5789 | return true; |
5790 | return false; | |
c906108c SS |
5791 | } |
5792 | ||
4c462cb0 SM |
5793 | /* See breakpoint.h. */ |
5794 | ||
5795 | bool | |
67822962 PA |
5796 | bpstat_causes_stop (bpstat bs) |
5797 | { | |
5798 | for (; bs != NULL; bs = bs->next) | |
5799 | if (bs->stop) | |
4c462cb0 | 5800 | return true; |
67822962 | 5801 | |
4c462cb0 | 5802 | return false; |
67822962 PA |
5803 | } |
5804 | ||
c906108c | 5805 | \f |
c5aa993b | 5806 | |
170b53b2 UW |
5807 | /* Compute a string of spaces suitable to indent the next line |
5808 | so it starts at the position corresponding to the table column | |
5809 | named COL_NAME in the currently active table of UIOUT. */ | |
5810 | ||
5811 | static char * | |
5812 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5813 | { | |
5814 | static char wrap_indent[80]; | |
5815 | int i, total_width, width, align; | |
c5209615 | 5816 | const char *text; |
170b53b2 UW |
5817 | |
5818 | total_width = 0; | |
112e8700 | 5819 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5820 | { |
5821 | if (strcmp (text, col_name) == 0) | |
5822 | { | |
5823 | gdb_assert (total_width < sizeof wrap_indent); | |
5824 | memset (wrap_indent, ' ', total_width); | |
5825 | wrap_indent[total_width] = 0; | |
5826 | ||
5827 | return wrap_indent; | |
5828 | } | |
5829 | ||
5830 | total_width += width + 1; | |
5831 | } | |
5832 | ||
5833 | return NULL; | |
5834 | } | |
5835 | ||
b775012e LM |
5836 | /* Determine if the locations of this breakpoint will have their conditions |
5837 | evaluated by the target, host or a mix of both. Returns the following: | |
5838 | ||
5839 | "host": Host evals condition. | |
5840 | "host or target": Host or Target evals condition. | |
5841 | "target": Target evals condition. | |
5842 | */ | |
5843 | ||
5844 | static const char * | |
5845 | bp_condition_evaluator (struct breakpoint *b) | |
5846 | { | |
5847 | struct bp_location *bl; | |
5848 | char host_evals = 0; | |
5849 | char target_evals = 0; | |
5850 | ||
5851 | if (!b) | |
5852 | return NULL; | |
5853 | ||
5854 | if (!is_breakpoint (b)) | |
5855 | return NULL; | |
5856 | ||
5857 | if (gdb_evaluates_breakpoint_condition_p () | |
5858 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5859 | return condition_evaluation_host; | |
5860 | ||
5861 | for (bl = b->loc; bl; bl = bl->next) | |
5862 | { | |
5863 | if (bl->cond_bytecode) | |
5864 | target_evals++; | |
5865 | else | |
5866 | host_evals++; | |
5867 | } | |
5868 | ||
5869 | if (host_evals && target_evals) | |
5870 | return condition_evaluation_both; | |
5871 | else if (target_evals) | |
5872 | return condition_evaluation_target; | |
5873 | else | |
5874 | return condition_evaluation_host; | |
5875 | } | |
5876 | ||
5877 | /* Determine the breakpoint location's condition evaluator. This is | |
5878 | similar to bp_condition_evaluator, but for locations. */ | |
5879 | ||
5880 | static const char * | |
5881 | bp_location_condition_evaluator (struct bp_location *bl) | |
5882 | { | |
5883 | if (bl && !is_breakpoint (bl->owner)) | |
5884 | return NULL; | |
5885 | ||
5886 | if (gdb_evaluates_breakpoint_condition_p () | |
5887 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5888 | return condition_evaluation_host; | |
5889 | ||
5890 | if (bl && bl->cond_bytecode) | |
5891 | return condition_evaluation_target; | |
5892 | else | |
5893 | return condition_evaluation_host; | |
5894 | } | |
5895 | ||
859825b8 JK |
5896 | /* Print the LOC location out of the list of B->LOC locations. */ |
5897 | ||
170b53b2 UW |
5898 | static void |
5899 | print_breakpoint_location (struct breakpoint *b, | |
5900 | struct bp_location *loc) | |
0d381245 | 5901 | { |
79a45e25 | 5902 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5903 | |
5904 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5905 | |
859825b8 JK |
5906 | if (loc != NULL && loc->shlib_disabled) |
5907 | loc = NULL; | |
5908 | ||
6c95b8df PA |
5909 | if (loc != NULL) |
5910 | set_current_program_space (loc->pspace); | |
5911 | ||
56435ebe | 5912 | if (b->display_canonical) |
d28cd78a | 5913 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5914 | else if (loc && loc->symtab) |
0d381245 | 5915 | { |
4a27f119 KS |
5916 | const struct symbol *sym = loc->symbol; |
5917 | ||
0d381245 VP |
5918 | if (sym) |
5919 | { | |
112e8700 | 5920 | uiout->text ("in "); |
987012b8 | 5921 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 5922 | function_name_style.style ()); |
112e8700 SM |
5923 | uiout->text (" "); |
5924 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5925 | uiout->text ("at "); | |
0d381245 | 5926 | } |
112e8700 | 5927 | uiout->field_string ("file", |
cbe56571 | 5928 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 5929 | file_name_style.style ()); |
112e8700 | 5930 | uiout->text (":"); |
05cba821 | 5931 | |
112e8700 SM |
5932 | if (uiout->is_mi_like_p ()) |
5933 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5934 | |
381befee | 5935 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 5936 | } |
859825b8 | 5937 | else if (loc) |
0d381245 | 5938 | { |
d7e74731 | 5939 | string_file stb; |
170b53b2 | 5940 | |
d7e74731 | 5941 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5942 | demangle, ""); |
112e8700 | 5943 | uiout->field_stream ("at", stb); |
0d381245 | 5944 | } |
859825b8 | 5945 | else |
f00aae0f | 5946 | { |
d28cd78a TT |
5947 | uiout->field_string ("pending", |
5948 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5949 | /* If extra_string is available, it could be holding a condition |
5950 | or dprintf arguments. In either case, make sure it is printed, | |
5951 | too, but only for non-MI streams. */ | |
112e8700 | 5952 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5953 | { |
5954 | if (b->type == bp_dprintf) | |
112e8700 | 5955 | uiout->text (","); |
f00aae0f | 5956 | else |
112e8700 SM |
5957 | uiout->text (" "); |
5958 | uiout->text (b->extra_string); | |
f00aae0f KS |
5959 | } |
5960 | } | |
6c95b8df | 5961 | |
b775012e LM |
5962 | if (loc && is_breakpoint (b) |
5963 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5964 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5965 | { | |
112e8700 SM |
5966 | uiout->text (" ("); |
5967 | uiout->field_string ("evaluated-by", | |
b775012e | 5968 | bp_location_condition_evaluator (loc)); |
112e8700 | 5969 | uiout->text (")"); |
b775012e | 5970 | } |
0d381245 VP |
5971 | } |
5972 | ||
269b11a2 PA |
5973 | static const char * |
5974 | bptype_string (enum bptype type) | |
c906108c | 5975 | { |
c4093a6a JM |
5976 | struct ep_type_description |
5977 | { | |
5978 | enum bptype type; | |
a121b7c1 | 5979 | const char *description; |
c4093a6a JM |
5980 | }; |
5981 | static struct ep_type_description bptypes[] = | |
c906108c | 5982 | { |
c5aa993b JM |
5983 | {bp_none, "?deleted?"}, |
5984 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5985 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5986 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5987 | {bp_until, "until"}, |
5988 | {bp_finish, "finish"}, | |
5989 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5990 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5991 | {bp_read_watchpoint, "read watchpoint"}, |
5992 | {bp_access_watchpoint, "acc watchpoint"}, | |
5993 | {bp_longjmp, "longjmp"}, | |
5994 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5995 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5996 | {bp_exception, "exception"}, |
5997 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5998 | {bp_step_resume, "step resume"}, |
2c03e5be | 5999 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6000 | {bp_watchpoint_scope, "watchpoint scope"}, |
6001 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6002 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6003 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6004 | {bp_thread_event, "thread events"}, |
1900040c | 6005 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6006 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6007 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6008 | {bp_exception_master, "exception master"}, |
ce78b96d | 6009 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6010 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6011 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6012 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6013 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6014 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6015 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6016 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6017 | }; |
269b11a2 PA |
6018 | |
6019 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6020 | || ((int) type != bptypes[(int) type].type)) | |
6021 | internal_error (__FILE__, __LINE__, | |
6022 | _("bptypes table does not describe type #%d."), | |
6023 | (int) type); | |
6024 | ||
6025 | return bptypes[(int) type].description; | |
6026 | } | |
6027 | ||
998580f1 MK |
6028 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6029 | For CLI, prefix the list with the string 'inf'. */ | |
6030 | ||
6031 | static void | |
6032 | output_thread_groups (struct ui_out *uiout, | |
6033 | const char *field_name, | |
5c632425 | 6034 | const std::vector<int> &inf_nums, |
998580f1 MK |
6035 | int mi_only) |
6036 | { | |
112e8700 | 6037 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
6038 | |
6039 | /* For backward compatibility, don't display inferiors in CLI unless | |
6040 | there are several. Always display them for MI. */ | |
6041 | if (!is_mi && mi_only) | |
6042 | return; | |
6043 | ||
10f489e5 | 6044 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 6045 | |
5c632425 | 6046 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
6047 | { |
6048 | if (is_mi) | |
6049 | { | |
6050 | char mi_group[10]; | |
6051 | ||
5c632425 | 6052 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 6053 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
6054 | } |
6055 | else | |
6056 | { | |
6057 | if (i == 0) | |
112e8700 | 6058 | uiout->text (" inf "); |
998580f1 | 6059 | else |
112e8700 | 6060 | uiout->text (", "); |
998580f1 | 6061 | |
5c632425 | 6062 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
6063 | } |
6064 | } | |
998580f1 MK |
6065 | } |
6066 | ||
a38118e5 PA |
6067 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
6068 | instead of going via breakpoint_ops::print_one. This makes "maint | |
6069 | info breakpoints" show the software breakpoint locations of | |
6070 | catchpoints, which are considered internal implementation | |
6071 | detail. */ | |
269b11a2 PA |
6072 | |
6073 | static void | |
6074 | print_one_breakpoint_location (struct breakpoint *b, | |
6075 | struct bp_location *loc, | |
6076 | int loc_number, | |
6077 | struct bp_location **last_loc, | |
a38118e5 | 6078 | int allflag, bool raw_loc) |
269b11a2 PA |
6079 | { |
6080 | struct command_line *l; | |
c2c6d25f | 6081 | static char bpenables[] = "nynny"; |
c906108c | 6082 | |
79a45e25 | 6083 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6084 | int header_of_multiple = 0; |
6085 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6086 | struct value_print_options opts; |
6087 | ||
6088 | get_user_print_options (&opts); | |
0d381245 VP |
6089 | |
6090 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6091 | /* See comment in print_one_breakpoint concerning treatment of |
6092 | breakpoints with single disabled location. */ | |
0d381245 VP |
6093 | if (loc == NULL |
6094 | && (b->loc != NULL | |
b5fa468f TBA |
6095 | && (b->loc->next != NULL |
6096 | || !b->loc->enabled || b->loc->disabled_by_cond))) | |
0d381245 VP |
6097 | header_of_multiple = 1; |
6098 | if (loc == NULL) | |
6099 | loc = b->loc; | |
6100 | ||
c4093a6a JM |
6101 | annotate_record (); |
6102 | ||
6103 | /* 1 */ | |
6104 | annotate_field (0); | |
0d381245 | 6105 | if (part_of_multiple) |
528e1572 | 6106 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6107 | else |
381befee | 6108 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6109 | |
6110 | /* 2 */ | |
6111 | annotate_field (1); | |
0d381245 | 6112 | if (part_of_multiple) |
112e8700 | 6113 | uiout->field_skip ("type"); |
269b11a2 | 6114 | else |
112e8700 | 6115 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6116 | |
6117 | /* 3 */ | |
6118 | annotate_field (2); | |
0d381245 | 6119 | if (part_of_multiple) |
112e8700 | 6120 | uiout->field_skip ("disp"); |
0d381245 | 6121 | else |
112e8700 | 6122 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6123 | |
c4093a6a JM |
6124 | /* 4 */ |
6125 | annotate_field (3); | |
0d381245 | 6126 | if (part_of_multiple) |
b5fa468f TBA |
6127 | uiout->field_string ("enabled", (loc->disabled_by_cond ? "N*" |
6128 | : (loc->enabled ? "y" : "n"))); | |
0d381245 | 6129 | else |
112e8700 | 6130 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6131 | |
c4093a6a | 6132 | /* 5 and 6 */ |
a38118e5 | 6133 | if (!raw_loc && b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6134 | b->ops->print_one (b, last_loc); |
3086aeae | 6135 | else |
a38118e5 PA |
6136 | { |
6137 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6138 | { |
6139 | struct watchpoint *w = (struct watchpoint *) b; | |
6140 | ||
6141 | /* Field 4, the address, is omitted (which makes the columns | |
6142 | not line up too nicely with the headers, but the effect | |
6143 | is relatively readable). */ | |
6144 | if (opts.addressprint) | |
112e8700 | 6145 | uiout->field_skip ("addr"); |
3a5c3e22 | 6146 | annotate_field (5); |
112e8700 | 6147 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6148 | } |
f06f1252 TT |
6149 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6150 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6151 | { |
6152 | if (opts.addressprint) | |
6153 | { | |
6154 | annotate_field (4); | |
6155 | if (header_of_multiple) | |
7f6aba03 TT |
6156 | uiout->field_string ("addr", "<MULTIPLE>", |
6157 | metadata_style.style ()); | |
a38118e5 | 6158 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6159 | uiout->field_string ("addr", "<PENDING>", |
6160 | metadata_style.style ()); | |
a38118e5 PA |
6161 | else |
6162 | uiout->field_core_addr ("addr", | |
6163 | loc->gdbarch, loc->address); | |
6164 | } | |
6165 | annotate_field (5); | |
6166 | if (!header_of_multiple) | |
6167 | print_breakpoint_location (b, loc); | |
6168 | if (b->loc) | |
6169 | *last_loc = b->loc; | |
6170 | } | |
6171 | } | |
6c95b8df | 6172 | |
998580f1 | 6173 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6174 | { |
5c632425 | 6175 | std::vector<int> inf_nums; |
998580f1 | 6176 | int mi_only = 1; |
6c95b8df | 6177 | |
08036331 | 6178 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6179 | { |
6180 | if (inf->pspace == loc->pspace) | |
5c632425 | 6181 | inf_nums.push_back (inf->num); |
6c95b8df | 6182 | } |
998580f1 | 6183 | |
dda83cd7 | 6184 | /* For backward compatibility, don't display inferiors in CLI unless |
998580f1 MK |
6185 | there are several. Always display for MI. */ |
6186 | if (allflag | |
6187 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
94c93c35 | 6188 | && (program_spaces.size () > 1 |
998580f1 MK |
6189 | || number_of_inferiors () > 1) |
6190 | /* LOC is for existing B, it cannot be in | |
6191 | moribund_locations and thus having NULL OWNER. */ | |
6192 | && loc->owner->type != bp_catchpoint)) | |
6193 | mi_only = 0; | |
5c632425 | 6194 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6195 | } |
6196 | ||
4a306c9a | 6197 | if (!part_of_multiple) |
c4093a6a | 6198 | { |
4a306c9a JB |
6199 | if (b->thread != -1) |
6200 | { | |
6201 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6202 | "stop only in" line a little further down. */ |
112e8700 | 6203 | uiout->text (" thread "); |
381befee | 6204 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6205 | } |
6206 | else if (b->task != 0) | |
6207 | { | |
112e8700 | 6208 | uiout->text (" task "); |
381befee | 6209 | uiout->field_signed ("task", b->task); |
4a306c9a | 6210 | } |
c4093a6a | 6211 | } |
f1310107 | 6212 | |
112e8700 | 6213 | uiout->text ("\n"); |
f1310107 | 6214 | |
348d480f | 6215 | if (!part_of_multiple) |
f1310107 TJB |
6216 | b->ops->print_one_detail (b, uiout); |
6217 | ||
0d381245 | 6218 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6219 | { |
6220 | annotate_field (6); | |
112e8700 | 6221 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6222 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
dda83cd7 | 6223 | the frame ID. */ |
112e8700 | 6224 | uiout->field_core_addr ("frame", |
5af949e3 | 6225 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6226 | uiout->text ("\n"); |
c4093a6a JM |
6227 | } |
6228 | ||
28010a5d | 6229 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6230 | { |
6231 | annotate_field (7); | |
d77f58be | 6232 | if (is_tracepoint (b)) |
112e8700 | 6233 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6234 | else |
112e8700 SM |
6235 | uiout->text ("\tstop only if "); |
6236 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6237 | |
6238 | /* Print whether the target is doing the breakpoint's condition | |
6239 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6240 | if (is_breakpoint (b) | |
6241 | && breakpoint_condition_evaluation_mode () | |
6242 | == condition_evaluation_target) | |
6243 | { | |
6a831f06 PA |
6244 | uiout->message (" (%pF evals)", |
6245 | string_field ("evaluated-by", | |
6246 | bp_condition_evaluator (b))); | |
b775012e | 6247 | } |
112e8700 | 6248 | uiout->text ("\n"); |
0101ce28 JJ |
6249 | } |
6250 | ||
0d381245 | 6251 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6252 | { |
4a64f543 | 6253 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6254 | uiout->text ("\tstop only in thread "); |
6255 | if (uiout->is_mi_like_p ()) | |
381befee | 6256 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6257 | else |
6258 | { | |
6259 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6260 | ||
112e8700 | 6261 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6262 | } |
112e8700 | 6263 | uiout->text ("\n"); |
c4093a6a JM |
6264 | } |
6265 | ||
556ec64d YQ |
6266 | if (!part_of_multiple) |
6267 | { | |
6268 | if (b->hit_count) | |
31f56a27 YQ |
6269 | { |
6270 | /* FIXME should make an annotation for this. */ | |
6271 | if (is_catchpoint (b)) | |
112e8700 | 6272 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6273 | else if (is_tracepoint (b)) |
112e8700 | 6274 | uiout->text ("\ttracepoint"); |
31f56a27 | 6275 | else |
112e8700 SM |
6276 | uiout->text ("\tbreakpoint"); |
6277 | uiout->text (" already hit "); | |
381befee | 6278 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6279 | if (b->hit_count == 1) |
112e8700 | 6280 | uiout->text (" time\n"); |
31f56a27 | 6281 | else |
112e8700 | 6282 | uiout->text (" times\n"); |
31f56a27 | 6283 | } |
556ec64d YQ |
6284 | else |
6285 | { | |
31f56a27 | 6286 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6287 | if (uiout->is_mi_like_p ()) |
381befee | 6288 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6289 | } |
6290 | } | |
8b93c638 | 6291 | |
0d381245 | 6292 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6293 | { |
6294 | annotate_field (8); | |
6a831f06 PA |
6295 | uiout->message ("\tignore next %pF hits\n", |
6296 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6297 | } |
059fb39f | 6298 | |
816338b5 SS |
6299 | /* Note that an enable count of 1 corresponds to "enable once" |
6300 | behavior, which is reported by the combination of enablement and | |
6301 | disposition, so we don't need to mention it here. */ | |
6302 | if (!part_of_multiple && b->enable_count > 1) | |
6303 | { | |
6304 | annotate_field (8); | |
112e8700 | 6305 | uiout->text ("\tdisable after "); |
816338b5 SS |
6306 | /* Tweak the wording to clarify that ignore and enable counts |
6307 | are distinct, and have additive effect. */ | |
6308 | if (b->ignore_count) | |
112e8700 | 6309 | uiout->text ("additional "); |
816338b5 | 6310 | else |
112e8700 | 6311 | uiout->text ("next "); |
381befee | 6312 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6313 | uiout->text (" hits\n"); |
816338b5 SS |
6314 | } |
6315 | ||
f196051f SS |
6316 | if (!part_of_multiple && is_tracepoint (b)) |
6317 | { | |
6318 | struct tracepoint *tp = (struct tracepoint *) b; | |
6319 | ||
6320 | if (tp->traceframe_usage) | |
6321 | { | |
112e8700 | 6322 | uiout->text ("\ttrace buffer usage "); |
381befee | 6323 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6324 | uiout->text (" bytes\n"); |
f196051f SS |
6325 | } |
6326 | } | |
d3ce09f5 | 6327 | |
d1b0a7bf | 6328 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6329 | if (!part_of_multiple && l) |
c4093a6a JM |
6330 | { |
6331 | annotate_field (9); | |
2e783024 | 6332 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6333 | print_command_lines (uiout, l, 4); |
c4093a6a | 6334 | } |
d24317b4 | 6335 | |
d9b3f62e | 6336 | if (is_tracepoint (b)) |
1042e4c0 | 6337 | { |
d9b3f62e PA |
6338 | struct tracepoint *t = (struct tracepoint *) b; |
6339 | ||
6340 | if (!part_of_multiple && t->pass_count) | |
6341 | { | |
6342 | annotate_field (10); | |
112e8700 | 6343 | uiout->text ("\tpass count "); |
381befee | 6344 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6345 | uiout->text (" \n"); |
d9b3f62e | 6346 | } |
f2a8bc8a YQ |
6347 | |
6348 | /* Don't display it when tracepoint or tracepoint location is | |
6349 | pending. */ | |
6350 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6351 | { | |
6352 | annotate_field (11); | |
6353 | ||
112e8700 SM |
6354 | if (uiout->is_mi_like_p ()) |
6355 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6356 | loc->inserted ? "y" : "n"); |
6357 | else | |
6358 | { | |
6359 | if (loc->inserted) | |
112e8700 | 6360 | uiout->text ("\t"); |
f2a8bc8a | 6361 | else |
112e8700 SM |
6362 | uiout->text ("\tnot "); |
6363 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6364 | } |
6365 | } | |
1042e4c0 SS |
6366 | } |
6367 | ||
112e8700 | 6368 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6369 | { |
3a5c3e22 PA |
6370 | if (is_watchpoint (b)) |
6371 | { | |
6372 | struct watchpoint *w = (struct watchpoint *) b; | |
6373 | ||
112e8700 | 6374 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6375 | } |
f00aae0f | 6376 | else if (b->location != NULL |
d28cd78a | 6377 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6378 | uiout->field_string ("original-location", |
d28cd78a | 6379 | event_location_to_string (b->location.get ())); |
d24317b4 | 6380 | } |
c4093a6a | 6381 | } |
c5aa993b | 6382 | |
13674803 SM |
6383 | /* See breakpoint.h. */ |
6384 | ||
6385 | bool fix_multi_location_breakpoint_output_globally = false; | |
6386 | ||
0d381245 VP |
6387 | static void |
6388 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6389 | struct bp_location **last_loc, |
6c95b8df | 6390 | int allflag) |
0d381245 | 6391 | { |
79a45e25 | 6392 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6393 | bool use_fixed_output |
6394 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6395 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6396 | |
b4be1b06 | 6397 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
a38118e5 | 6398 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag, false); |
8d3788bd | 6399 | |
b4be1b06 SM |
6400 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6401 | are outside. */ | |
6402 | if (!use_fixed_output) | |
6403 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6404 | |
6405 | /* If this breakpoint has custom print function, | |
6406 | it's already printed. Otherwise, print individual | |
6407 | locations, if any. */ | |
a38118e5 PA |
6408 | if (b->ops == NULL |
6409 | || b->ops->print_one == NULL | |
6410 | || allflag) | |
0d381245 | 6411 | { |
4a64f543 MS |
6412 | /* If breakpoint has a single location that is disabled, we |
6413 | print it as if it had several locations, since otherwise it's | |
6414 | hard to represent "breakpoint enabled, location disabled" | |
6415 | situation. | |
6416 | ||
6417 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6418 | internally, that's not a property exposed to users. |
6419 | ||
6420 | Likewise, while catchpoints may be implemented with | |
6421 | breakpoints (e.g., catch throw), that's not a property | |
6422 | exposed to users. We do however display the internal | |
6423 | breakpoint locations with "maint info breakpoints". */ | |
6424 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6425 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6426 | || is_ada_exception_catchpoint (b)) | |
a38118e5 | 6427 | && (allflag |
b5fa468f TBA |
6428 | || (b->loc && (b->loc->next |
6429 | || !b->loc->enabled | |
6430 | || b->loc->disabled_by_cond)))) | |
0d381245 | 6431 | { |
b4be1b06 SM |
6432 | gdb::optional<ui_out_emit_list> locations_list; |
6433 | ||
6434 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6435 | MI record. For later versions, place breakpoint locations in a | |
6436 | list. */ | |
6437 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6438 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6439 | |
b4be1b06 SM |
6440 | int n = 1; |
6441 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next, ++n) | |
8d3788bd | 6442 | { |
b4be1b06 | 6443 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6444 | print_one_breakpoint_location (b, loc, n, last_loc, |
6445 | allflag, allflag); | |
8d3788bd | 6446 | } |
0d381245 VP |
6447 | } |
6448 | } | |
6449 | } | |
6450 | ||
a6d9a66e UW |
6451 | static int |
6452 | breakpoint_address_bits (struct breakpoint *b) | |
6453 | { | |
6454 | int print_address_bits = 0; | |
6455 | struct bp_location *loc; | |
6456 | ||
c6d81124 PA |
6457 | /* Software watchpoints that aren't watching memory don't have an |
6458 | address to print. */ | |
6459 | if (is_no_memory_software_watchpoint (b)) | |
6460 | return 0; | |
6461 | ||
a6d9a66e UW |
6462 | for (loc = b->loc; loc; loc = loc->next) |
6463 | { | |
c7437ca6 PA |
6464 | int addr_bit; |
6465 | ||
c7437ca6 | 6466 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6467 | if (addr_bit > print_address_bits) |
6468 | print_address_bits = addr_bit; | |
6469 | } | |
6470 | ||
6471 | return print_address_bits; | |
6472 | } | |
0d381245 | 6473 | |
65630365 | 6474 | /* See breakpoint.h. */ |
c5aa993b | 6475 | |
65630365 PA |
6476 | void |
6477 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6478 | { |
a6d9a66e | 6479 | struct bp_location *dummy_loc = NULL; |
65630365 | 6480 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6481 | } |
c5aa993b | 6482 | |
09d682a4 TT |
6483 | /* Return true if this breakpoint was set by the user, false if it is |
6484 | internal or momentary. */ | |
6485 | ||
6486 | int | |
6487 | user_breakpoint_p (struct breakpoint *b) | |
6488 | { | |
46c6471b | 6489 | return b->number > 0; |
09d682a4 TT |
6490 | } |
6491 | ||
93daf339 TT |
6492 | /* See breakpoint.h. */ |
6493 | ||
6494 | int | |
6495 | pending_breakpoint_p (struct breakpoint *b) | |
6496 | { | |
6497 | return b->loc == NULL; | |
6498 | } | |
6499 | ||
5c458ae8 SM |
6500 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6501 | ||
6502 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6503 | understood by number_or_range_parser. Only breakpoints included in this | |
6504 | list are then printed. | |
6505 | ||
6506 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6507 | ||
6508 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6509 | ones for which it returns true. | |
6510 | ||
6511 | Return the total number of breakpoints listed. */ | |
c906108c | 6512 | |
d77f58be | 6513 | static int |
5c458ae8 | 6514 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6515 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6516 | { |
52f0bd74 | 6517 | struct breakpoint *b; |
a6d9a66e | 6518 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6519 | int nr_printable_breakpoints; |
79a45b7d | 6520 | struct value_print_options opts; |
a6d9a66e | 6521 | int print_address_bits = 0; |
269b11a2 | 6522 | int print_type_col_width = 14; |
79a45e25 | 6523 | struct ui_out *uiout = current_uiout; |
b5fa468f | 6524 | bool has_disabled_by_cond_location = false; |
269b11a2 | 6525 | |
79a45b7d TT |
6526 | get_user_print_options (&opts); |
6527 | ||
4a64f543 MS |
6528 | /* Compute the number of rows in the table, as well as the size |
6529 | required for address fields. */ | |
7f3b0473 AC |
6530 | nr_printable_breakpoints = 0; |
6531 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6532 | { |
6533 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6534 | if (filter && !filter (b)) | |
6535 | continue; | |
6536 | ||
5c458ae8 | 6537 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6538 | accept. Skip the others. */ |
5c458ae8 | 6539 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6540 | { |
5c458ae8 | 6541 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6542 | continue; |
5c458ae8 | 6543 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6544 | continue; |
6545 | } | |
269b11a2 | 6546 | |
5c458ae8 | 6547 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6548 | { |
6549 | int addr_bit, type_len; | |
a6d9a66e | 6550 | |
e5a67952 MS |
6551 | addr_bit = breakpoint_address_bits (b); |
6552 | if (addr_bit > print_address_bits) | |
6553 | print_address_bits = addr_bit; | |
269b11a2 | 6554 | |
e5a67952 MS |
6555 | type_len = strlen (bptype_string (b->type)); |
6556 | if (type_len > print_type_col_width) | |
6557 | print_type_col_width = type_len; | |
6558 | ||
6559 | nr_printable_breakpoints++; | |
6560 | } | |
6561 | } | |
7f3b0473 | 6562 | |
4a2b031d TT |
6563 | { |
6564 | ui_out_emit_table table_emitter (uiout, | |
6565 | opts.addressprint ? 6 : 5, | |
6566 | nr_printable_breakpoints, | |
6567 | "BreakpointTable"); | |
6568 | ||
6569 | if (nr_printable_breakpoints > 0) | |
6570 | annotate_breakpoints_headers (); | |
6571 | if (nr_printable_breakpoints > 0) | |
6572 | annotate_field (0); | |
6573 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6574 | if (nr_printable_breakpoints > 0) | |
6575 | annotate_field (1); | |
6576 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6577 | if (nr_printable_breakpoints > 0) | |
6578 | annotate_field (2); | |
6579 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6580 | if (nr_printable_breakpoints > 0) | |
6581 | annotate_field (3); | |
6582 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6583 | if (opts.addressprint) | |
6584 | { | |
6585 | if (nr_printable_breakpoints > 0) | |
6586 | annotate_field (4); | |
6587 | if (print_address_bits <= 32) | |
6588 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6589 | else | |
6590 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6591 | } | |
6592 | if (nr_printable_breakpoints > 0) | |
6593 | annotate_field (5); | |
6594 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6595 | uiout->table_body (); | |
6596 | if (nr_printable_breakpoints > 0) | |
6597 | annotate_breakpoints_table (); | |
6598 | ||
6599 | ALL_BREAKPOINTS (b) | |
6600 | { | |
6601 | QUIT; | |
6602 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6603 | if (filter && !filter (b)) | |
6604 | continue; | |
e5a67952 | 6605 | |
5c458ae8 | 6606 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6607 | accept. Skip the others. */ |
e5a67952 | 6608 | |
5c458ae8 | 6609 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6610 | { |
5c458ae8 | 6611 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6612 | { |
5c458ae8 | 6613 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6614 | continue; |
6615 | } | |
6616 | else /* all others */ | |
6617 | { | |
5c458ae8 | 6618 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6619 | continue; |
6620 | } | |
6621 | } | |
6622 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6623 | show_internal is set. */ |
6624 | if (show_internal || user_breakpoint_p (b)) | |
b5fa468f TBA |
6625 | { |
6626 | print_one_breakpoint (b, &last_loc, show_internal); | |
6627 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
6628 | if (loc->disabled_by_cond) | |
6629 | has_disabled_by_cond_location = true; | |
6630 | } | |
4a2b031d TT |
6631 | } |
6632 | } | |
698384cd | 6633 | |
7f3b0473 | 6634 | if (nr_printable_breakpoints == 0) |
c906108c | 6635 | { |
4a64f543 MS |
6636 | /* If there's a filter, let the caller decide how to report |
6637 | empty list. */ | |
d77f58be SS |
6638 | if (!filter) |
6639 | { | |
5c458ae8 | 6640 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6641 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6642 | else |
112e8700 | 6643 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6644 | bp_num_list); |
d77f58be | 6645 | } |
c906108c SS |
6646 | } |
6647 | else | |
c4093a6a | 6648 | { |
a6d9a66e UW |
6649 | if (last_loc && !server_command) |
6650 | set_next_address (last_loc->gdbarch, last_loc->address); | |
b5fa468f TBA |
6651 | |
6652 | if (has_disabled_by_cond_location) | |
6653 | uiout->message (_("(*): Breakpoint condition is invalid at this " | |
6654 | "location.\n")); | |
c4093a6a | 6655 | } |
c906108c | 6656 | |
4a64f543 | 6657 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6658 | there have been breakpoints? */ |
c906108c | 6659 | annotate_breakpoints_table_end (); |
d77f58be SS |
6660 | |
6661 | return nr_printable_breakpoints; | |
c906108c SS |
6662 | } |
6663 | ||
ad443146 SS |
6664 | /* Display the value of default-collect in a way that is generally |
6665 | compatible with the breakpoint list. */ | |
6666 | ||
6667 | static void | |
6668 | default_collect_info (void) | |
6669 | { | |
79a45e25 PA |
6670 | struct ui_out *uiout = current_uiout; |
6671 | ||
ad443146 SS |
6672 | /* If it has no value (which is frequently the case), say nothing; a |
6673 | message like "No default-collect." gets in user's face when it's | |
6674 | not wanted. */ | |
6675 | if (!*default_collect) | |
6676 | return; | |
6677 | ||
6678 | /* The following phrase lines up nicely with per-tracepoint collect | |
6679 | actions. */ | |
112e8700 SM |
6680 | uiout->text ("default collect "); |
6681 | uiout->field_string ("default-collect", default_collect); | |
6682 | uiout->text (" \n"); | |
ad443146 SS |
6683 | } |
6684 | ||
c906108c | 6685 | static void |
0b39b52e | 6686 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6687 | { |
5c458ae8 | 6688 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6689 | |
6690 | default_collect_info (); | |
d77f58be SS |
6691 | } |
6692 | ||
6693 | static void | |
1d12d88f | 6694 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6695 | { |
5c458ae8 | 6696 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6697 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6698 | |
6699 | if (num_printed == 0) | |
6700 | { | |
e5a67952 | 6701 | if (args == NULL || *args == '\0') |
112e8700 | 6702 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6703 | else |
112e8700 | 6704 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6705 | } |
c906108c SS |
6706 | } |
6707 | ||
7a292a7a | 6708 | static void |
4495129a | 6709 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6710 | { |
5c458ae8 | 6711 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6712 | |
6713 | default_collect_info (); | |
c906108c SS |
6714 | } |
6715 | ||
0d381245 | 6716 | static int |
714835d5 | 6717 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6718 | struct program_space *pspace, |
714835d5 | 6719 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6720 | { |
6721 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6722 | |
0d381245 VP |
6723 | for (; bl; bl = bl->next) |
6724 | { | |
6c95b8df PA |
6725 | if (bl->pspace == pspace |
6726 | && bl->address == pc | |
0d381245 VP |
6727 | && (!overlay_debugging || bl->section == section)) |
6728 | return 1; | |
6729 | } | |
6730 | return 0; | |
6731 | } | |
6732 | ||
672f9b60 | 6733 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6734 | concerns with logical breakpoints, so we match program spaces, not |
6735 | address spaces. */ | |
c906108c SS |
6736 | |
6737 | static void | |
6c95b8df PA |
6738 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6739 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6740 | struct obj_section *section, int thread) |
c906108c | 6741 | { |
52f0bd74 AC |
6742 | int others = 0; |
6743 | struct breakpoint *b; | |
c906108c SS |
6744 | |
6745 | ALL_BREAKPOINTS (b) | |
672f9b60 | 6746 | others += (user_breakpoint_p (b) |
dda83cd7 | 6747 | && breakpoint_has_pc (b, pspace, pc, section)); |
c906108c SS |
6748 | if (others > 0) |
6749 | { | |
a3f17187 AC |
6750 | if (others == 1) |
6751 | printf_filtered (_("Note: breakpoint ")); | |
6752 | else /* if (others == ???) */ | |
6753 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6754 | ALL_BREAKPOINTS (b) |
672f9b60 | 6755 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6756 | { |
6757 | others--; | |
6758 | printf_filtered ("%d", b->number); | |
6759 | if (b->thread == -1 && thread != -1) | |
6760 | printf_filtered (" (all threads)"); | |
6761 | else if (b->thread != -1) | |
6762 | printf_filtered (" (thread %d)", b->thread); | |
6763 | printf_filtered ("%s%s ", | |
059fb39f | 6764 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6765 | || b->enable_state == bp_call_disabled) |
0d381245 | 6766 | ? " (disabled)" |
0d381245 VP |
6767 | : ""), |
6768 | (others > 1) ? "," | |
6769 | : ((others == 1) ? " and" : "")); | |
6770 | } | |
6a831f06 PA |
6771 | current_uiout->message (_("also set at pc %ps.\n"), |
6772 | styled_string (address_style.style (), | |
6773 | paddress (gdbarch, pc))); | |
c906108c SS |
6774 | } |
6775 | } | |
6776 | \f | |
c906108c | 6777 | |
cb1e4e32 PA |
6778 | /* Return true iff it is meaningful to use the address member of LOC. |
6779 | For some breakpoint types, the locations' address members are | |
6780 | irrelevant and it makes no sense to attempt to compare them to | |
6781 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6782 | |
cb1e4e32 PA |
6783 | More specifically, software watchpoints and catchpoints that are |
6784 | not backed by breakpoints always have a zero valued location | |
6785 | address and we don't want to mark breakpoints of any of these types | |
6786 | to be a duplicate of an actual breakpoint location at address | |
6787 | zero. */ | |
e4f237da | 6788 | |
cb1e4e32 PA |
6789 | static bool |
6790 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6791 | { |
cb1e4e32 | 6792 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6793 | } |
6794 | ||
6795 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6796 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6797 | ||
6798 | static int | |
4a64f543 MS |
6799 | watchpoint_locations_match (struct bp_location *loc1, |
6800 | struct bp_location *loc2) | |
2d134ed3 | 6801 | { |
3a5c3e22 PA |
6802 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6803 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6804 | ||
6805 | /* Both of them must exist. */ | |
6806 | gdb_assert (w1 != NULL); | |
6807 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6808 | |
4a64f543 MS |
6809 | /* If the target can evaluate the condition expression in hardware, |
6810 | then we we need to insert both watchpoints even if they are at | |
6811 | the same place. Otherwise the watchpoint will only trigger when | |
6812 | the condition of whichever watchpoint was inserted evaluates to | |
6813 | true, not giving a chance for GDB to check the condition of the | |
6814 | other watchpoint. */ | |
3a5c3e22 | 6815 | if ((w1->cond_exp |
4a64f543 MS |
6816 | && target_can_accel_watchpoint_condition (loc1->address, |
6817 | loc1->length, | |
0cf6dd15 | 6818 | loc1->watchpoint_type, |
4d01a485 | 6819 | w1->cond_exp.get ())) |
3a5c3e22 | 6820 | || (w2->cond_exp |
4a64f543 MS |
6821 | && target_can_accel_watchpoint_condition (loc2->address, |
6822 | loc2->length, | |
0cf6dd15 | 6823 | loc2->watchpoint_type, |
4d01a485 | 6824 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6825 | return 0; |
6826 | ||
85d721b8 PA |
6827 | /* Note that this checks the owner's type, not the location's. In |
6828 | case the target does not support read watchpoints, but does | |
6829 | support access watchpoints, we'll have bp_read_watchpoint | |
6830 | watchpoints with hw_access locations. Those should be considered | |
6831 | duplicates of hw_read locations. The hw_read locations will | |
6832 | become hw_access locations later. */ | |
2d134ed3 PA |
6833 | return (loc1->owner->type == loc2->owner->type |
6834 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6835 | && loc1->address == loc2->address | |
6836 | && loc1->length == loc2->length); | |
e4f237da KB |
6837 | } |
6838 | ||
31e77af2 | 6839 | /* See breakpoint.h. */ |
6c95b8df | 6840 | |
31e77af2 | 6841 | int |
accd0bcd YQ |
6842 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6843 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6844 | { |
f5656ead | 6845 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6846 | || aspace1 == aspace2) |
6847 | && addr1 == addr2); | |
6848 | } | |
6849 | ||
f1310107 TJB |
6850 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6851 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6852 | matches ASPACE2. On targets that have global breakpoints, the address | |
6853 | space doesn't really matter. */ | |
6854 | ||
6855 | static int | |
accd0bcd YQ |
6856 | breakpoint_address_match_range (const address_space *aspace1, |
6857 | CORE_ADDR addr1, | |
6858 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6859 | CORE_ADDR addr2) |
6860 | { | |
f5656ead | 6861 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6862 | || aspace1 == aspace2) |
6863 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6864 | } | |
6865 | ||
6866 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6867 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6868 | matches the breakpoint's address space. On targets that have global | |
6869 | breakpoints, the address space doesn't really matter. */ | |
6870 | ||
6871 | static int | |
6872 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6873 | const address_space *aspace, |
f1310107 TJB |
6874 | CORE_ADDR addr) |
6875 | { | |
6876 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6877 | aspace, addr) | |
6878 | || (bl->length | |
6879 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6880 | bl->address, bl->length, | |
6881 | aspace, addr))); | |
6882 | } | |
6883 | ||
d35ae833 PA |
6884 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6885 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6886 | match happens only if ASPACE matches the breakpoint's address | |
6887 | space. On targets that have global breakpoints, the address space | |
6888 | doesn't really matter. */ | |
6889 | ||
6890 | static int | |
6891 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6892 | const address_space *aspace, |
d35ae833 PA |
6893 | CORE_ADDR addr, int len) |
6894 | { | |
6895 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6896 | || bl->pspace->aspace == aspace) | |
6897 | { | |
6898 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6899 | ||
6900 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6901 | return 1; | |
6902 | } | |
6903 | return 0; | |
6904 | } | |
6905 | ||
1e4d1764 YQ |
6906 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6907 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6908 | true, otherwise returns false. */ | |
6909 | ||
6910 | static int | |
6911 | tracepoint_locations_match (struct bp_location *loc1, | |
6912 | struct bp_location *loc2) | |
6913 | { | |
6914 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6915 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6916 | locations at the same address of different tracepoints are regarded as | |
6917 | different locations. */ | |
6918 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6919 | else | |
6920 | return 0; | |
6921 | } | |
6922 | ||
2d134ed3 | 6923 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 | 6924 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
7f32a4d5 PA |
6925 | the same location. If SW_HW_BPS_MATCH is true, then software |
6926 | breakpoint locations and hardware breakpoint locations match, | |
6927 | otherwise they don't. */ | |
2d134ed3 PA |
6928 | |
6929 | static int | |
7f32a4d5 PA |
6930 | breakpoint_locations_match (struct bp_location *loc1, |
6931 | struct bp_location *loc2, | |
6932 | bool sw_hw_bps_match) | |
2d134ed3 | 6933 | { |
2bdf28a0 JK |
6934 | int hw_point1, hw_point2; |
6935 | ||
6936 | /* Both of them must not be in moribund_locations. */ | |
6937 | gdb_assert (loc1->owner != NULL); | |
6938 | gdb_assert (loc2->owner != NULL); | |
6939 | ||
6940 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6941 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6942 | |
6943 | if (hw_point1 != hw_point2) | |
6944 | return 0; | |
6945 | else if (hw_point1) | |
6946 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6947 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6948 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6949 | else |
7f32a4d5 PA |
6950 | /* We compare bp_location.length in order to cover ranged |
6951 | breakpoints. Keep this in sync with | |
6952 | bp_location_is_less_than. */ | |
f1310107 TJB |
6953 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, |
6954 | loc2->pspace->aspace, loc2->address) | |
7f32a4d5 | 6955 | && (loc1->loc_type == loc2->loc_type || sw_hw_bps_match) |
f1310107 | 6956 | && loc1->length == loc2->length); |
2d134ed3 PA |
6957 | } |
6958 | ||
76897487 KB |
6959 | static void |
6960 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
dda83cd7 | 6961 | int bnum, int have_bnum) |
76897487 | 6962 | { |
f63fbe86 MS |
6963 | /* The longest string possibly returned by hex_string_custom |
6964 | is 50 chars. These must be at least that big for safety. */ | |
6965 | char astr1[64]; | |
6966 | char astr2[64]; | |
76897487 | 6967 | |
bb599908 PH |
6968 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6969 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6970 | if (have_bnum) |
8a3fe4f8 | 6971 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
dda83cd7 | 6972 | bnum, astr1, astr2); |
76897487 | 6973 | else |
8a3fe4f8 | 6974 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6975 | } |
6976 | ||
4a64f543 MS |
6977 | /* Adjust a breakpoint's address to account for architectural |
6978 | constraints on breakpoint placement. Return the adjusted address. | |
6979 | Note: Very few targets require this kind of adjustment. For most | |
6980 | targets, this function is simply the identity function. */ | |
76897487 KB |
6981 | |
6982 | static CORE_ADDR | |
a6d9a66e UW |
6983 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6984 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6985 | { |
a0de8c21 YQ |
6986 | if (bptype == bp_watchpoint |
6987 | || bptype == bp_hardware_watchpoint | |
6988 | || bptype == bp_read_watchpoint | |
6989 | || bptype == bp_access_watchpoint | |
6990 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6991 | { |
6992 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
dda83cd7 | 6993 | have their addresses modified. */ |
88f7da05 KB |
6994 | return bpaddr; |
6995 | } | |
7c16b83e PA |
6996 | else if (bptype == bp_single_step) |
6997 | { | |
6998 | /* Single-step breakpoints should not have their addresses | |
6999 | modified. If there's any architectural constrain that | |
7000 | applies to this address, then it should have already been | |
7001 | taken into account when the breakpoint was created in the | |
7002 | first place. If we didn't do this, stepping through e.g., | |
7003 | Thumb-2 IT blocks would break. */ | |
7004 | return bpaddr; | |
7005 | } | |
76897487 KB |
7006 | else |
7007 | { | |
a0de8c21 YQ |
7008 | CORE_ADDR adjusted_bpaddr = bpaddr; |
7009 | ||
7010 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
7011 | { | |
7012 | /* Some targets have architectural constraints on the placement | |
7013 | of breakpoint instructions. Obtain the adjusted address. */ | |
7014 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
7015 | } | |
76897487 | 7016 | |
a0de8c21 | 7017 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
7018 | |
7019 | /* An adjusted breakpoint address can significantly alter | |
dda83cd7 | 7020 | a user's expectations. Print a warning if an adjustment |
76897487 KB |
7021 | is required. */ |
7022 | if (adjusted_bpaddr != bpaddr) | |
7023 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7024 | ||
7025 | return adjusted_bpaddr; | |
7026 | } | |
7027 | } | |
7028 | ||
cb1e4e32 PA |
7029 | static bp_loc_type |
7030 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 7031 | { |
cb1e4e32 | 7032 | switch (type) |
e049a4b5 DJ |
7033 | { |
7034 | case bp_breakpoint: | |
7c16b83e | 7035 | case bp_single_step: |
e049a4b5 DJ |
7036 | case bp_until: |
7037 | case bp_finish: | |
7038 | case bp_longjmp: | |
7039 | case bp_longjmp_resume: | |
e2e4d78b | 7040 | case bp_longjmp_call_dummy: |
186c406b TT |
7041 | case bp_exception: |
7042 | case bp_exception_resume: | |
e049a4b5 | 7043 | case bp_step_resume: |
2c03e5be | 7044 | case bp_hp_step_resume: |
e049a4b5 DJ |
7045 | case bp_watchpoint_scope: |
7046 | case bp_call_dummy: | |
aa7d318d | 7047 | case bp_std_terminate: |
e049a4b5 DJ |
7048 | case bp_shlib_event: |
7049 | case bp_thread_event: | |
7050 | case bp_overlay_event: | |
4efc6507 | 7051 | case bp_jit_event: |
0fd8e87f | 7052 | case bp_longjmp_master: |
aa7d318d | 7053 | case bp_std_terminate_master: |
186c406b | 7054 | case bp_exception_master: |
0e30163f JK |
7055 | case bp_gnu_ifunc_resolver: |
7056 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7057 | case bp_dprintf: |
cb1e4e32 | 7058 | return bp_loc_software_breakpoint; |
e049a4b5 | 7059 | case bp_hardware_breakpoint: |
cb1e4e32 | 7060 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
7061 | case bp_hardware_watchpoint: |
7062 | case bp_read_watchpoint: | |
7063 | case bp_access_watchpoint: | |
cb1e4e32 | 7064 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 7065 | case bp_watchpoint: |
ce78b96d | 7066 | case bp_catchpoint: |
15c3d785 PA |
7067 | case bp_tracepoint: |
7068 | case bp_fast_tracepoint: | |
0fb4aa4b | 7069 | case bp_static_tracepoint: |
cb1e4e32 | 7070 | return bp_loc_other; |
e049a4b5 | 7071 | default: |
e2e0b3e5 | 7072 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 7073 | } |
cb1e4e32 PA |
7074 | } |
7075 | ||
7076 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
7077 | { | |
7078 | this->owner = owner; | |
7079 | this->cond_bytecode = NULL; | |
7080 | this->shlib_disabled = 0; | |
7081 | this->enabled = 1; | |
b5fa468f | 7082 | this->disabled_by_cond = false; |
cb1e4e32 PA |
7083 | |
7084 | this->loc_type = type; | |
e049a4b5 | 7085 | |
cb1e4e32 PA |
7086 | if (this->loc_type == bp_loc_software_breakpoint |
7087 | || this->loc_type == bp_loc_hardware_breakpoint) | |
7088 | mark_breakpoint_location_modified (this); | |
7089 | ||
b6433ede | 7090 | incref (); |
cb1e4e32 PA |
7091 | } |
7092 | ||
7093 | bp_location::bp_location (breakpoint *owner) | |
7094 | : bp_location::bp_location (owner, | |
7095 | bp_location_from_bp_type (owner->type)) | |
7096 | { | |
28010a5d PA |
7097 | } |
7098 | ||
7099 | /* Allocate a struct bp_location. */ | |
7100 | ||
7101 | static struct bp_location * | |
7102 | allocate_bp_location (struct breakpoint *bpt) | |
7103 | { | |
348d480f PA |
7104 | return bpt->ops->allocate_location (bpt); |
7105 | } | |
7cc221ef | 7106 | |
f431efe5 PA |
7107 | /* Decrement reference count. If the reference count reaches 0, |
7108 | destroy the bp_location. Sets *BLP to NULL. */ | |
7109 | ||
7110 | static void | |
7111 | decref_bp_location (struct bp_location **blp) | |
7112 | { | |
b6433ede | 7113 | bp_location_ref_policy::decref (*blp); |
f431efe5 PA |
7114 | *blp = NULL; |
7115 | } | |
7116 | ||
346774a9 | 7117 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7118 | |
b270e6f9 TT |
7119 | static breakpoint * |
7120 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7121 | { |
346774a9 | 7122 | struct breakpoint *b1; |
b270e6f9 | 7123 | struct breakpoint *result = b.get (); |
c906108c | 7124 | |
346774a9 PA |
7125 | /* Add this breakpoint to the end of the chain so that a list of |
7126 | breakpoints will come out in order of increasing numbers. */ | |
7127 | ||
7128 | b1 = breakpoint_chain; | |
7129 | if (b1 == 0) | |
b270e6f9 | 7130 | breakpoint_chain = b.release (); |
346774a9 PA |
7131 | else |
7132 | { | |
7133 | while (b1->next) | |
7134 | b1 = b1->next; | |
b270e6f9 | 7135 | b1->next = b.release (); |
346774a9 | 7136 | } |
b270e6f9 TT |
7137 | |
7138 | return result; | |
346774a9 PA |
7139 | } |
7140 | ||
7141 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7142 | ||
7143 | static void | |
7144 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7145 | struct gdbarch *gdbarch, | |
28010a5d | 7146 | enum bptype bptype, |
c0a91b2b | 7147 | const struct breakpoint_ops *ops) |
346774a9 | 7148 | { |
348d480f PA |
7149 | gdb_assert (ops != NULL); |
7150 | ||
28010a5d | 7151 | b->ops = ops; |
4d28f7a8 | 7152 | b->type = bptype; |
a6d9a66e | 7153 | b->gdbarch = gdbarch; |
c906108c SS |
7154 | b->language = current_language->la_language; |
7155 | b->input_radix = input_radix; | |
d0fb5eae | 7156 | b->related_breakpoint = b; |
346774a9 PA |
7157 | } |
7158 | ||
7159 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7160 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7161 | |
7162 | static struct breakpoint * | |
7163 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7164 | enum bptype bptype, |
c0a91b2b | 7165 | const struct breakpoint_ops *ops) |
346774a9 | 7166 | { |
3b0871f4 | 7167 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7168 | |
3b0871f4 | 7169 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7170 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7171 | } |
7172 | ||
0ba852ab | 7173 | /* Initialize loc->function_name. */ |
0e30163f | 7174 | |
0d381245 | 7175 | static void |
0ba852ab | 7176 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7177 | { |
2bdf28a0 JK |
7178 | gdb_assert (loc->owner != NULL); |
7179 | ||
0d381245 | 7180 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7181 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7182 | || is_tracepoint (loc->owner)) |
0d381245 | 7183 | { |
2c02bd72 | 7184 | const char *function_name; |
0e30163f | 7185 | |
3467ec66 | 7186 | if (loc->msymbol != NULL |
f50776aa | 7187 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7188 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7189 | { |
7190 | struct breakpoint *b = loc->owner; | |
7191 | ||
c9d95fa3 | 7192 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7193 | |
7194 | if (b->type == bp_breakpoint && b->loc == loc | |
7195 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7196 | { |
7197 | /* Create only the whole new breakpoint of this type but do not | |
7198 | mess more complicated breakpoints with multiple locations. */ | |
7199 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b | 7200 | /* Remember the resolver's address for use by the return |
dda83cd7 | 7201 | breakpoint. */ |
3467ec66 | 7202 | loc->related_address = loc->address; |
0e30163f JK |
7203 | } |
7204 | } | |
3467ec66 PA |
7205 | else |
7206 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7207 | |
2c02bd72 DE |
7208 | if (function_name) |
7209 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7210 | } |
7211 | } | |
7212 | ||
a6d9a66e | 7213 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7214 | struct gdbarch * |
a6d9a66e UW |
7215 | get_sal_arch (struct symtab_and_line sal) |
7216 | { | |
7217 | if (sal.section) | |
08feed99 | 7218 | return sal.section->objfile->arch (); |
a6d9a66e | 7219 | if (sal.symtab) |
08feed99 | 7220 | return SYMTAB_OBJFILE (sal.symtab)->arch (); |
a6d9a66e UW |
7221 | |
7222 | return NULL; | |
7223 | } | |
7224 | ||
346774a9 PA |
7225 | /* Low level routine for partially initializing a breakpoint of type |
7226 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7227 | file name, and line number are provided by SAL. |
0d381245 VP |
7228 | |
7229 | It is expected that the caller will complete the initialization of | |
7230 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7231 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7232 | |
346774a9 PA |
7233 | static void |
7234 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7235 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7236 | const struct breakpoint_ops *ops) |
0d381245 | 7237 | { |
28010a5d | 7238 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7239 | |
3742cc8b | 7240 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7241 | |
6c95b8df PA |
7242 | if (bptype != bp_catchpoint) |
7243 | gdb_assert (sal.pspace != NULL); | |
7244 | ||
f8eba3c6 TT |
7245 | /* Store the program space that was used to set the breakpoint, |
7246 | except for ordinary breakpoints, which are independent of the | |
7247 | program space. */ | |
7248 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7249 | b->pspace = sal.pspace; | |
346774a9 | 7250 | } |
c906108c | 7251 | |
346774a9 PA |
7252 | /* set_raw_breakpoint is a low level routine for allocating and |
7253 | partially initializing a breakpoint of type BPTYPE. The newly | |
7254 | created breakpoint's address, section, source file name, and line | |
7255 | number are provided by SAL. The newly created and partially | |
7256 | initialized breakpoint is added to the breakpoint chain and | |
7257 | is also returned as the value of this function. | |
7258 | ||
7259 | It is expected that the caller will complete the initialization of | |
7260 | the newly created breakpoint struct as well as output any status | |
7261 | information regarding the creation of a new breakpoint. In | |
7262 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7263 | number! Care should be taken to not allow an error to occur | |
7264 | prior to completing the initialization of the breakpoint. If this | |
7265 | should happen, a bogus breakpoint will be left on the chain. */ | |
7266 | ||
7267 | struct breakpoint * | |
7268 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7269 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7270 | const struct breakpoint_ops *ops) |
346774a9 | 7271 | { |
3b0871f4 | 7272 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7273 | |
3b0871f4 | 7274 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7275 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7276 | } |
7277 | ||
53a5351d | 7278 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7279 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7280 | initiated the operation. */ | |
c906108c SS |
7281 | |
7282 | void | |
186c406b | 7283 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7284 | { |
35df4500 | 7285 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7286 | int thread = tp->global_num; |
0fd8e87f UW |
7287 | |
7288 | /* To avoid having to rescan all objfile symbols at every step, | |
7289 | we maintain a list of continually-inserted but always disabled | |
7290 | longjmp "master" breakpoints. Here, we simply create momentary | |
7291 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7292 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7293 | if (b->pspace == current_program_space |
186c406b TT |
7294 | && (b->type == bp_longjmp_master |
7295 | || b->type == bp_exception_master)) | |
0fd8e87f | 7296 | { |
06edf0c0 PA |
7297 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7298 | struct breakpoint *clone; | |
cc59ec59 | 7299 | |
e2e4d78b JK |
7300 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7301 | after their removal. */ | |
06edf0c0 | 7302 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7303 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7304 | clone->thread = thread; |
7305 | } | |
186c406b TT |
7306 | |
7307 | tp->initiating_frame = frame; | |
c906108c SS |
7308 | } |
7309 | ||
611c83ae | 7310 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7311 | void |
611c83ae | 7312 | delete_longjmp_breakpoint (int thread) |
c906108c | 7313 | { |
35df4500 | 7314 | struct breakpoint *b, *b_tmp; |
c906108c | 7315 | |
35df4500 | 7316 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7317 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7318 | { |
7319 | if (b->thread == thread) | |
7320 | delete_breakpoint (b); | |
7321 | } | |
c906108c SS |
7322 | } |
7323 | ||
f59f708a PA |
7324 | void |
7325 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7326 | { | |
7327 | struct breakpoint *b, *b_tmp; | |
7328 | ||
7329 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7330 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7331 | { | |
7332 | if (b->thread == thread) | |
7333 | b->disposition = disp_del_at_next_stop; | |
7334 | } | |
7335 | } | |
7336 | ||
e2e4d78b JK |
7337 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7338 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7339 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7340 | breakpoints. */ | |
7341 | ||
7342 | struct breakpoint * | |
7343 | set_longjmp_breakpoint_for_call_dummy (void) | |
7344 | { | |
7345 | struct breakpoint *b, *retval = NULL; | |
7346 | ||
7347 | ALL_BREAKPOINTS (b) | |
7348 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7349 | { | |
7350 | struct breakpoint *new_b; | |
7351 | ||
7352 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7353 | &momentary_breakpoint_ops, |
7354 | 1); | |
00431a78 | 7355 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7356 | |
7357 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7358 | ||
7359 | gdb_assert (new_b->related_breakpoint == new_b); | |
7360 | if (retval == NULL) | |
7361 | retval = new_b; | |
7362 | new_b->related_breakpoint = retval; | |
7363 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7364 | retval = retval->related_breakpoint; | |
7365 | retval->related_breakpoint = new_b; | |
7366 | } | |
7367 | ||
7368 | return retval; | |
7369 | } | |
7370 | ||
7371 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7372 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7373 | stack. |
7374 | ||
7375 | You should call this function only at places where it is safe to currently | |
7376 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7377 | frames. */ | |
7378 | ||
7379 | void | |
b67a2c6f | 7380 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7381 | { |
7382 | struct breakpoint *b, *b_tmp; | |
7383 | ||
7384 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7385 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7386 | { |
7387 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7388 | ||
7389 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7390 | dummy_b = dummy_b->related_breakpoint; | |
7391 | if (dummy_b->type != bp_call_dummy | |
7392 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7393 | continue; | |
7394 | ||
00431a78 | 7395 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7396 | |
7397 | while (b->related_breakpoint != b) | |
7398 | { | |
7399 | if (b_tmp == b->related_breakpoint) | |
7400 | b_tmp = b->related_breakpoint->next; | |
7401 | delete_breakpoint (b->related_breakpoint); | |
7402 | } | |
7403 | delete_breakpoint (b); | |
7404 | } | |
7405 | } | |
7406 | ||
1900040c MS |
7407 | void |
7408 | enable_overlay_breakpoints (void) | |
7409 | { | |
52f0bd74 | 7410 | struct breakpoint *b; |
1900040c MS |
7411 | |
7412 | ALL_BREAKPOINTS (b) | |
7413 | if (b->type == bp_overlay_event) | |
7414 | { | |
7415 | b->enable_state = bp_enabled; | |
44702360 | 7416 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7417 | overlay_events_enabled = 1; |
1900040c MS |
7418 | } |
7419 | } | |
7420 | ||
7421 | void | |
7422 | disable_overlay_breakpoints (void) | |
7423 | { | |
52f0bd74 | 7424 | struct breakpoint *b; |
1900040c MS |
7425 | |
7426 | ALL_BREAKPOINTS (b) | |
7427 | if (b->type == bp_overlay_event) | |
7428 | { | |
7429 | b->enable_state = bp_disabled; | |
44702360 | 7430 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7431 | overlay_events_enabled = 0; |
1900040c MS |
7432 | } |
7433 | } | |
7434 | ||
aa7d318d TT |
7435 | /* Set an active std::terminate breakpoint for each std::terminate |
7436 | master breakpoint. */ | |
7437 | void | |
7438 | set_std_terminate_breakpoint (void) | |
7439 | { | |
35df4500 | 7440 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7441 | |
35df4500 | 7442 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7443 | if (b->pspace == current_program_space |
7444 | && b->type == bp_std_terminate_master) | |
7445 | { | |
06edf0c0 | 7446 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7447 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7448 | } |
7449 | } | |
7450 | ||
7451 | /* Delete all the std::terminate breakpoints. */ | |
7452 | void | |
7453 | delete_std_terminate_breakpoint (void) | |
7454 | { | |
35df4500 | 7455 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7456 | |
35df4500 | 7457 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7458 | if (b->type == bp_std_terminate) |
7459 | delete_breakpoint (b); | |
7460 | } | |
7461 | ||
c4093a6a | 7462 | struct breakpoint * |
a6d9a66e | 7463 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7464 | { |
7465 | struct breakpoint *b; | |
c4093a6a | 7466 | |
06edf0c0 PA |
7467 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7468 | &internal_breakpoint_ops); | |
7469 | ||
b5de0fa7 | 7470 | b->enable_state = bp_enabled; |
f00aae0f | 7471 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7472 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7473 | |
44702360 | 7474 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7475 | |
c4093a6a JM |
7476 | return b; |
7477 | } | |
7478 | ||
0101ce28 JJ |
7479 | struct lang_and_radix |
7480 | { | |
7481 | enum language lang; | |
7482 | int radix; | |
7483 | }; | |
7484 | ||
4efc6507 DE |
7485 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7486 | ||
7487 | struct breakpoint * | |
7488 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7489 | { | |
2a7f3dff PA |
7490 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7491 | &internal_breakpoint_ops); | |
4efc6507 | 7492 | } |
0101ce28 | 7493 | |
03673fc7 PP |
7494 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7495 | ||
7496 | void | |
7497 | remove_jit_event_breakpoints (void) | |
7498 | { | |
7499 | struct breakpoint *b, *b_tmp; | |
7500 | ||
7501 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7502 | if (b->type == bp_jit_event | |
7503 | && b->loc->pspace == current_program_space) | |
7504 | delete_breakpoint (b); | |
7505 | } | |
7506 | ||
cae688ec JJ |
7507 | void |
7508 | remove_solib_event_breakpoints (void) | |
7509 | { | |
35df4500 | 7510 | struct breakpoint *b, *b_tmp; |
cae688ec | 7511 | |
35df4500 | 7512 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7513 | if (b->type == bp_shlib_event |
7514 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7515 | delete_breakpoint (b); |
7516 | } | |
7517 | ||
f37f681c PA |
7518 | /* See breakpoint.h. */ |
7519 | ||
7520 | void | |
7521 | remove_solib_event_breakpoints_at_next_stop (void) | |
7522 | { | |
7523 | struct breakpoint *b, *b_tmp; | |
7524 | ||
7525 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7526 | if (b->type == bp_shlib_event | |
7527 | && b->loc->pspace == current_program_space) | |
7528 | b->disposition = disp_del_at_next_stop; | |
7529 | } | |
7530 | ||
04086b45 PA |
7531 | /* Helper for create_solib_event_breakpoint / |
7532 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7533 | INSERT_MODE to pass through to update_global_location_list. */ | |
7534 | ||
7535 | static struct breakpoint * | |
7536 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7537 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7538 | { |
7539 | struct breakpoint *b; | |
7540 | ||
06edf0c0 PA |
7541 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7542 | &internal_breakpoint_ops); | |
04086b45 | 7543 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7544 | return b; |
7545 | } | |
7546 | ||
04086b45 PA |
7547 | struct breakpoint * |
7548 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7549 | { | |
7550 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7551 | } | |
7552 | ||
f37f681c PA |
7553 | /* See breakpoint.h. */ |
7554 | ||
7555 | struct breakpoint * | |
7556 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7557 | { | |
7558 | struct breakpoint *b; | |
7559 | ||
04086b45 PA |
7560 | /* Explicitly tell update_global_location_list to insert |
7561 | locations. */ | |
7562 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7563 | if (!b->loc->inserted) |
7564 | { | |
7565 | delete_breakpoint (b); | |
7566 | return NULL; | |
7567 | } | |
7568 | return b; | |
7569 | } | |
7570 | ||
cae688ec JJ |
7571 | /* Disable any breakpoints that are on code in shared libraries. Only |
7572 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7573 | ||
7574 | void | |
cb851954 | 7575 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7576 | { |
876fa593 | 7577 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7578 | |
876fa593 | 7579 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7580 | { |
2bdf28a0 | 7581 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7582 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7583 | |
4a64f543 MS |
7584 | /* We apply the check to all breakpoints, including disabled for |
7585 | those with loc->duplicate set. This is so that when breakpoint | |
7586 | becomes enabled, or the duplicate is removed, gdb will try to | |
7587 | insert all breakpoints. If we don't set shlib_disabled here, | |
7588 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7589 | if (((b->type == bp_breakpoint) |
508ccb1f | 7590 | || (b->type == bp_jit_event) |
1042e4c0 | 7591 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7592 | || (is_tracepoint (b))) |
6c95b8df | 7593 | && loc->pspace == current_program_space |
0d381245 | 7594 | && !loc->shlib_disabled |
6c95b8df | 7595 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7596 | ) |
0d381245 VP |
7597 | { |
7598 | loc->shlib_disabled = 1; | |
7599 | } | |
cae688ec JJ |
7600 | } |
7601 | } | |
7602 | ||
63644780 NB |
7603 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7604 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7605 | disabled ones can just stay disabled. */ | |
84acb35a | 7606 | |
75149521 | 7607 | static void |
84acb35a JJ |
7608 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7609 | { | |
876fa593 | 7610 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7611 | int disabled_shlib_breaks = 0; |
7612 | ||
876fa593 | 7613 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7614 | { |
2bdf28a0 | 7615 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7616 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7617 | |
1e4d1764 | 7618 | if (solib->pspace == loc->pspace |
e2dd7057 | 7619 | && !loc->shlib_disabled |
1e4d1764 YQ |
7620 | && (((b->type == bp_breakpoint |
7621 | || b->type == bp_jit_event | |
7622 | || b->type == bp_hardware_breakpoint) | |
7623 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7624 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7625 | || is_tracepoint (b)) | |
e2dd7057 | 7626 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7627 | { |
e2dd7057 PP |
7628 | loc->shlib_disabled = 1; |
7629 | /* At this point, we cannot rely on remove_breakpoint | |
7630 | succeeding so we must mark the breakpoint as not inserted | |
7631 | to prevent future errors occurring in remove_breakpoints. */ | |
7632 | loc->inserted = 0; | |
8d3788bd VP |
7633 | |
7634 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7635 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7636 | |
e2dd7057 PP |
7637 | if (!disabled_shlib_breaks) |
7638 | { | |
223ffa71 | 7639 | target_terminal::ours_for_output (); |
3e43a32a MS |
7640 | warning (_("Temporarily disabling breakpoints " |
7641 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7642 | solib->so_name); |
84acb35a | 7643 | } |
e2dd7057 | 7644 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7645 | } |
7646 | } | |
84acb35a JJ |
7647 | } |
7648 | ||
63644780 NB |
7649 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7650 | notification of free_objfile. Only apply to enabled breakpoints, | |
7651 | disabled ones can just stay disabled. */ | |
7652 | ||
7653 | static void | |
7654 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7655 | { | |
7656 | struct breakpoint *b; | |
7657 | ||
7658 | if (objfile == NULL) | |
7659 | return; | |
7660 | ||
d03de421 PA |
7661 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7662 | managed by the user with add-symbol-file/remove-symbol-file. | |
7663 | Similarly to how breakpoints in shared libraries are handled in | |
7664 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7665 | shlib_disabled so they end up uninserted on the next global |
7666 | location list update. Shared libraries not loaded by the user | |
7667 | aren't handled here -- they're already handled in | |
7668 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7669 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7670 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7671 | main objfile). */ | |
7672 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7673 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7674 | return; |
7675 | ||
7676 | ALL_BREAKPOINTS (b) | |
7677 | { | |
7678 | struct bp_location *loc; | |
7679 | int bp_modified = 0; | |
7680 | ||
7681 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7682 | continue; | |
7683 | ||
7684 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7685 | { | |
7686 | CORE_ADDR loc_addr = loc->address; | |
7687 | ||
7688 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7689 | && loc->loc_type != bp_loc_software_breakpoint) | |
7690 | continue; | |
7691 | ||
7692 | if (loc->shlib_disabled != 0) | |
7693 | continue; | |
7694 | ||
7695 | if (objfile->pspace != loc->pspace) | |
7696 | continue; | |
7697 | ||
7698 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7699 | && loc->loc_type != bp_loc_software_breakpoint) | |
7700 | continue; | |
7701 | ||
7702 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7703 | { | |
7704 | loc->shlib_disabled = 1; | |
08351840 PA |
7705 | /* At this point, we don't know whether the object was |
7706 | unmapped from the inferior or not, so leave the | |
7707 | inserted flag alone. We'll handle failure to | |
7708 | uninsert quietly, in case the object was indeed | |
7709 | unmapped. */ | |
63644780 NB |
7710 | |
7711 | mark_breakpoint_location_modified (loc); | |
7712 | ||
7713 | bp_modified = 1; | |
7714 | } | |
7715 | } | |
7716 | ||
7717 | if (bp_modified) | |
76727919 | 7718 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7719 | } |
7720 | } | |
7721 | ||
ce78b96d JB |
7722 | /* FORK & VFORK catchpoints. */ |
7723 | ||
e29a4733 | 7724 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7725 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7726 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7727 | |
c1fc2657 | 7728 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7729 | { |
e29a4733 PA |
7730 | /* Process id of a child process whose forking triggered this |
7731 | catchpoint. This field is only valid immediately after this | |
7732 | catchpoint has triggered. */ | |
7733 | ptid_t forked_inferior_pid; | |
7734 | }; | |
7735 | ||
4a64f543 MS |
7736 | /* Implement the "insert" breakpoint_ops method for fork |
7737 | catchpoints. */ | |
ce78b96d | 7738 | |
77b06cd7 TJB |
7739 | static int |
7740 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7741 | { |
e99b03dc | 7742 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7743 | } |
7744 | ||
4a64f543 MS |
7745 | /* Implement the "remove" breakpoint_ops method for fork |
7746 | catchpoints. */ | |
ce78b96d JB |
7747 | |
7748 | static int | |
73971819 | 7749 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7750 | { |
e99b03dc | 7751 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7752 | } |
7753 | ||
7754 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7755 | catchpoints. */ | |
7756 | ||
7757 | static int | |
f1310107 | 7758 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7759 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7760 | const struct target_waitstatus *ws) |
ce78b96d | 7761 | { |
e29a4733 PA |
7762 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7763 | ||
f90263c1 TT |
7764 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7765 | return 0; | |
7766 | ||
7767 | c->forked_inferior_pid = ws->value.related_pid; | |
7768 | return 1; | |
ce78b96d JB |
7769 | } |
7770 | ||
4a64f543 MS |
7771 | /* Implement the "print_it" breakpoint_ops method for fork |
7772 | catchpoints. */ | |
ce78b96d JB |
7773 | |
7774 | static enum print_stop_action | |
348d480f | 7775 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7776 | { |
36dfb11c | 7777 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7778 | struct breakpoint *b = bs->breakpoint_at; |
7779 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7780 | |
ce78b96d | 7781 | annotate_catchpoint (b->number); |
f303dbd6 | 7782 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7783 | if (b->disposition == disp_del) |
112e8700 | 7784 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7785 | else |
112e8700 SM |
7786 | uiout->text ("Catchpoint "); |
7787 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7788 | { |
112e8700 SM |
7789 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7790 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7791 | } |
381befee | 7792 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7793 | uiout->text (" (forked process "); |
381befee | 7794 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7795 | uiout->text ("), "); |
ce78b96d JB |
7796 | return PRINT_SRC_AND_LOC; |
7797 | } | |
7798 | ||
4a64f543 MS |
7799 | /* Implement the "print_one" breakpoint_ops method for fork |
7800 | catchpoints. */ | |
ce78b96d JB |
7801 | |
7802 | static void | |
a6d9a66e | 7803 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7804 | { |
e29a4733 | 7805 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7806 | struct value_print_options opts; |
79a45e25 | 7807 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7808 | |
7809 | get_user_print_options (&opts); | |
7810 | ||
4a64f543 MS |
7811 | /* Field 4, the address, is omitted (which makes the columns not |
7812 | line up too nicely with the headers, but the effect is relatively | |
7813 | readable). */ | |
79a45b7d | 7814 | if (opts.addressprint) |
112e8700 | 7815 | uiout->field_skip ("addr"); |
ce78b96d | 7816 | annotate_field (5); |
112e8700 | 7817 | uiout->text ("fork"); |
d7e15655 | 7818 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7819 | { |
112e8700 | 7820 | uiout->text (", process "); |
381befee | 7821 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7822 | uiout->spaces (1); |
ce78b96d | 7823 | } |
8ac3646f | 7824 | |
112e8700 SM |
7825 | if (uiout->is_mi_like_p ()) |
7826 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7827 | } |
7828 | ||
7829 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7830 | catchpoints. */ | |
7831 | ||
7832 | static void | |
7833 | print_mention_catch_fork (struct breakpoint *b) | |
7834 | { | |
7835 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7836 | } | |
7837 | ||
6149aea9 PA |
7838 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7839 | catchpoints. */ | |
7840 | ||
7841 | static void | |
7842 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7843 | { | |
7844 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7845 | print_recreate_thread (b, fp); |
6149aea9 PA |
7846 | } |
7847 | ||
ce78b96d JB |
7848 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7849 | ||
2060206e | 7850 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7851 | |
4a64f543 MS |
7852 | /* Implement the "insert" breakpoint_ops method for vfork |
7853 | catchpoints. */ | |
ce78b96d | 7854 | |
77b06cd7 TJB |
7855 | static int |
7856 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7857 | { |
e99b03dc | 7858 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7859 | } |
7860 | ||
4a64f543 MS |
7861 | /* Implement the "remove" breakpoint_ops method for vfork |
7862 | catchpoints. */ | |
ce78b96d JB |
7863 | |
7864 | static int | |
73971819 | 7865 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7866 | { |
e99b03dc | 7867 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7868 | } |
7869 | ||
7870 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7871 | catchpoints. */ | |
7872 | ||
7873 | static int | |
f1310107 | 7874 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7875 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7876 | const struct target_waitstatus *ws) |
ce78b96d | 7877 | { |
e29a4733 PA |
7878 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7879 | ||
f90263c1 TT |
7880 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7881 | return 0; | |
7882 | ||
7883 | c->forked_inferior_pid = ws->value.related_pid; | |
7884 | return 1; | |
ce78b96d JB |
7885 | } |
7886 | ||
4a64f543 MS |
7887 | /* Implement the "print_it" breakpoint_ops method for vfork |
7888 | catchpoints. */ | |
ce78b96d JB |
7889 | |
7890 | static enum print_stop_action | |
348d480f | 7891 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7892 | { |
36dfb11c | 7893 | struct ui_out *uiout = current_uiout; |
348d480f | 7894 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7895 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7896 | ||
ce78b96d | 7897 | annotate_catchpoint (b->number); |
f303dbd6 | 7898 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7899 | if (b->disposition == disp_del) |
112e8700 | 7900 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7901 | else |
112e8700 SM |
7902 | uiout->text ("Catchpoint "); |
7903 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7904 | { |
112e8700 SM |
7905 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7906 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7907 | } |
381befee | 7908 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7909 | uiout->text (" (vforked process "); |
381befee | 7910 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7911 | uiout->text ("), "); |
ce78b96d JB |
7912 | return PRINT_SRC_AND_LOC; |
7913 | } | |
7914 | ||
4a64f543 MS |
7915 | /* Implement the "print_one" breakpoint_ops method for vfork |
7916 | catchpoints. */ | |
ce78b96d JB |
7917 | |
7918 | static void | |
a6d9a66e | 7919 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7920 | { |
e29a4733 | 7921 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7922 | struct value_print_options opts; |
79a45e25 | 7923 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7924 | |
7925 | get_user_print_options (&opts); | |
4a64f543 MS |
7926 | /* Field 4, the address, is omitted (which makes the columns not |
7927 | line up too nicely with the headers, but the effect is relatively | |
7928 | readable). */ | |
79a45b7d | 7929 | if (opts.addressprint) |
112e8700 | 7930 | uiout->field_skip ("addr"); |
ce78b96d | 7931 | annotate_field (5); |
112e8700 | 7932 | uiout->text ("vfork"); |
d7e15655 | 7933 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7934 | { |
112e8700 | 7935 | uiout->text (", process "); |
381befee | 7936 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7937 | uiout->spaces (1); |
ce78b96d | 7938 | } |
8ac3646f | 7939 | |
112e8700 SM |
7940 | if (uiout->is_mi_like_p ()) |
7941 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7942 | } |
7943 | ||
7944 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7945 | catchpoints. */ | |
7946 | ||
7947 | static void | |
7948 | print_mention_catch_vfork (struct breakpoint *b) | |
7949 | { | |
7950 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7951 | } | |
7952 | ||
6149aea9 PA |
7953 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7954 | catchpoints. */ | |
7955 | ||
7956 | static void | |
7957 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7958 | { | |
7959 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7960 | print_recreate_thread (b, fp); |
6149aea9 PA |
7961 | } |
7962 | ||
ce78b96d JB |
7963 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7964 | ||
2060206e | 7965 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7966 | |
edcc5120 | 7967 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7968 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7969 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7970 | ||
c1fc2657 | 7971 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7972 | { |
c1fc2657 | 7973 | ~solib_catchpoint () override; |
edcc5120 TT |
7974 | |
7975 | /* True for "catch load", false for "catch unload". */ | |
b650a282 | 7976 | bool is_load; |
edcc5120 TT |
7977 | |
7978 | /* Regular expression to match, if any. COMPILED is only valid when | |
7979 | REGEX is non-NULL. */ | |
7980 | char *regex; | |
2d7cc5c7 | 7981 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7982 | }; |
7983 | ||
c1fc2657 | 7984 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7985 | { |
c1fc2657 | 7986 | xfree (this->regex); |
edcc5120 TT |
7987 | } |
7988 | ||
7989 | static int | |
7990 | insert_catch_solib (struct bp_location *ignore) | |
7991 | { | |
7992 | return 0; | |
7993 | } | |
7994 | ||
7995 | static int | |
73971819 | 7996 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7997 | { |
7998 | return 0; | |
7999 | } | |
8000 | ||
8001 | static int | |
8002 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 8003 | const address_space *aspace, |
edcc5120 TT |
8004 | CORE_ADDR bp_addr, |
8005 | const struct target_waitstatus *ws) | |
8006 | { | |
8007 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8008 | struct breakpoint *other; | |
8009 | ||
8010 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8011 | return 1; | |
8012 | ||
8013 | ALL_BREAKPOINTS (other) | |
8014 | { | |
8015 | struct bp_location *other_bl; | |
8016 | ||
8017 | if (other == bl->owner) | |
8018 | continue; | |
8019 | ||
8020 | if (other->type != bp_shlib_event) | |
8021 | continue; | |
8022 | ||
c1fc2657 | 8023 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
8024 | continue; |
8025 | ||
8026 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8027 | { | |
8028 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8029 | return 1; | |
8030 | } | |
8031 | } | |
8032 | ||
8033 | return 0; | |
8034 | } | |
8035 | ||
8036 | static void | |
8037 | check_status_catch_solib (struct bpstats *bs) | |
8038 | { | |
8039 | struct solib_catchpoint *self | |
8040 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
8041 | |
8042 | if (self->is_load) | |
8043 | { | |
52941706 | 8044 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
8045 | { |
8046 | if (!self->regex | |
2d7cc5c7 | 8047 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
8048 | return; |
8049 | } | |
8050 | } | |
8051 | else | |
8052 | { | |
6fb16ce6 | 8053 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
8054 | { |
8055 | if (!self->regex | |
6fb16ce6 | 8056 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
8057 | return; |
8058 | } | |
8059 | } | |
8060 | ||
8061 | bs->stop = 0; | |
8062 | bs->print_it = print_it_noop; | |
8063 | } | |
8064 | ||
8065 | static enum print_stop_action | |
8066 | print_it_catch_solib (bpstat bs) | |
8067 | { | |
8068 | struct breakpoint *b = bs->breakpoint_at; | |
8069 | struct ui_out *uiout = current_uiout; | |
8070 | ||
8071 | annotate_catchpoint (b->number); | |
f303dbd6 | 8072 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 8073 | if (b->disposition == disp_del) |
112e8700 | 8074 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 8075 | else |
112e8700 | 8076 | uiout->text ("Catchpoint "); |
381befee | 8077 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8078 | uiout->text ("\n"); |
8079 | if (uiout->is_mi_like_p ()) | |
8080 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
8081 | print_solib_event (1); |
8082 | return PRINT_SRC_AND_LOC; | |
8083 | } | |
8084 | ||
8085 | static void | |
8086 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8087 | { | |
8088 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8089 | struct value_print_options opts; | |
8090 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
8091 | |
8092 | get_user_print_options (&opts); | |
8093 | /* Field 4, the address, is omitted (which makes the columns not | |
8094 | line up too nicely with the headers, but the effect is relatively | |
8095 | readable). */ | |
8096 | if (opts.addressprint) | |
8097 | { | |
8098 | annotate_field (4); | |
112e8700 | 8099 | uiout->field_skip ("addr"); |
edcc5120 TT |
8100 | } |
8101 | ||
528e1572 | 8102 | std::string msg; |
edcc5120 TT |
8103 | annotate_field (5); |
8104 | if (self->is_load) | |
8105 | { | |
8106 | if (self->regex) | |
528e1572 | 8107 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8108 | else |
528e1572 | 8109 | msg = _("load of library"); |
edcc5120 TT |
8110 | } |
8111 | else | |
8112 | { | |
8113 | if (self->regex) | |
528e1572 | 8114 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8115 | else |
528e1572 | 8116 | msg = _("unload of library"); |
edcc5120 | 8117 | } |
112e8700 | 8118 | uiout->field_string ("what", msg); |
8ac3646f | 8119 | |
112e8700 SM |
8120 | if (uiout->is_mi_like_p ()) |
8121 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8122 | } |
8123 | ||
8124 | static void | |
8125 | print_mention_catch_solib (struct breakpoint *b) | |
8126 | { | |
8127 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8128 | ||
8129 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8130 | self->is_load ? "load" : "unload"); | |
8131 | } | |
8132 | ||
8133 | static void | |
8134 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8135 | { | |
8136 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8137 | ||
8138 | fprintf_unfiltered (fp, "%s %s", | |
8139 | b->disposition == disp_del ? "tcatch" : "catch", | |
8140 | self->is_load ? "load" : "unload"); | |
8141 | if (self->regex) | |
8142 | fprintf_unfiltered (fp, " %s", self->regex); | |
8143 | fprintf_unfiltered (fp, "\n"); | |
8144 | } | |
8145 | ||
8146 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8147 | ||
b650a282 | 8148 | /* See breakpoint.h. */ |
edcc5120 | 8149 | |
91985142 | 8150 | void |
b650a282 | 8151 | add_solib_catchpoint (const char *arg, bool is_load, bool is_temp, bool enabled) |
edcc5120 | 8152 | { |
edcc5120 | 8153 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8154 | |
edcc5120 TT |
8155 | if (!arg) |
8156 | arg = ""; | |
f1735a53 | 8157 | arg = skip_spaces (arg); |
edcc5120 | 8158 | |
36bd8eaa | 8159 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8160 | |
8161 | if (*arg != '\0') | |
8162 | { | |
2d7cc5c7 PA |
8163 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8164 | _("Invalid regexp"))); | |
edcc5120 TT |
8165 | c->regex = xstrdup (arg); |
8166 | } | |
8167 | ||
8168 | c->is_load = is_load; | |
36bd8eaa | 8169 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8170 | &catch_solib_breakpoint_ops); |
8171 | ||
c1fc2657 | 8172 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8173 | |
b270e6f9 | 8174 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8175 | } |
8176 | ||
91985142 MG |
8177 | /* A helper function that does all the work for "catch load" and |
8178 | "catch unload". */ | |
8179 | ||
8180 | static void | |
eb4c3f4a | 8181 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8182 | struct cmd_list_element *command) |
8183 | { | |
91985142 | 8184 | const int enabled = 1; |
b650a282 | 8185 | bool temp = get_cmd_context (command) == CATCH_TEMPORARY; |
91985142 | 8186 | |
b650a282 | 8187 | add_solib_catchpoint (arg, is_load, temp, enabled); |
91985142 MG |
8188 | } |
8189 | ||
edcc5120 | 8190 | static void |
eb4c3f4a | 8191 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8192 | struct cmd_list_element *command) |
8193 | { | |
8194 | catch_load_or_unload (arg, from_tty, 1, command); | |
8195 | } | |
8196 | ||
8197 | static void | |
eb4c3f4a | 8198 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8199 | struct cmd_list_element *command) |
8200 | { | |
8201 | catch_load_or_unload (arg, from_tty, 0, command); | |
8202 | } | |
8203 | ||
b650a282 | 8204 | /* See breakpoint.h. */ |
ce78b96d | 8205 | |
ab04a2af | 8206 | void |
346774a9 | 8207 | init_catchpoint (struct breakpoint *b, |
b650a282 | 8208 | struct gdbarch *gdbarch, bool temp, |
63160a43 | 8209 | const char *cond_string, |
c0a91b2b | 8210 | const struct breakpoint_ops *ops) |
c906108c | 8211 | { |
51abb421 | 8212 | symtab_and_line sal; |
6c95b8df | 8213 | sal.pspace = current_program_space; |
c5aa993b | 8214 | |
28010a5d | 8215 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8216 | |
1b36a34b | 8217 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b650a282 | 8218 | b->disposition = temp ? disp_del : disp_donttouch; |
346774a9 PA |
8219 | } |
8220 | ||
28010a5d | 8221 | void |
b270e6f9 | 8222 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8223 | { |
b270e6f9 | 8224 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8225 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8226 | if (is_tracepoint (b)) |
8227 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8228 | if (!internal) |
8229 | mention (b); | |
76727919 | 8230 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8231 | |
8232 | if (update_gll) | |
44702360 | 8233 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8234 | } |
8235 | ||
9b70b993 | 8236 | static void |
a6d9a66e | 8237 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
b650a282 | 8238 | bool temp, const char *cond_string, |
dda83cd7 | 8239 | const struct breakpoint_ops *ops) |
c906108c | 8240 | { |
b270e6f9 | 8241 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8242 | |
b650a282 | 8243 | init_catchpoint (c.get (), gdbarch, temp, cond_string, ops); |
e29a4733 PA |
8244 | |
8245 | c->forked_inferior_pid = null_ptid; | |
8246 | ||
b270e6f9 | 8247 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8248 | } |
8249 | ||
fe798b75 JB |
8250 | /* Exec catchpoints. */ |
8251 | ||
b4d90040 | 8252 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8253 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8254 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8255 | ||
c1fc2657 | 8256 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8257 | { |
c1fc2657 | 8258 | ~exec_catchpoint () override; |
b4d90040 PA |
8259 | |
8260 | /* Filename of a program whose exec triggered this catchpoint. | |
8261 | This field is only valid immediately after this catchpoint has | |
8262 | triggered. */ | |
8263 | char *exec_pathname; | |
8264 | }; | |
8265 | ||
c1fc2657 | 8266 | /* Exec catchpoint destructor. */ |
b4d90040 | 8267 | |
c1fc2657 | 8268 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8269 | { |
c1fc2657 | 8270 | xfree (this->exec_pathname); |
b4d90040 PA |
8271 | } |
8272 | ||
77b06cd7 TJB |
8273 | static int |
8274 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8275 | { |
e99b03dc | 8276 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8277 | } |
c906108c | 8278 | |
fe798b75 | 8279 | static int |
73971819 | 8280 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8281 | { |
e99b03dc | 8282 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8283 | } |
c906108c | 8284 | |
fe798b75 | 8285 | static int |
f1310107 | 8286 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8287 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8288 | const struct target_waitstatus *ws) |
fe798b75 | 8289 | { |
b4d90040 PA |
8290 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8291 | ||
f90263c1 TT |
8292 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8293 | return 0; | |
8294 | ||
8295 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8296 | return 1; | |
fe798b75 | 8297 | } |
c906108c | 8298 | |
fe798b75 | 8299 | static enum print_stop_action |
348d480f | 8300 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8301 | { |
36dfb11c | 8302 | struct ui_out *uiout = current_uiout; |
348d480f | 8303 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8304 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8305 | ||
fe798b75 | 8306 | annotate_catchpoint (b->number); |
f303dbd6 | 8307 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8308 | if (b->disposition == disp_del) |
112e8700 | 8309 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8310 | else |
112e8700 SM |
8311 | uiout->text ("Catchpoint "); |
8312 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8313 | { |
112e8700 SM |
8314 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8315 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8316 | } |
381befee | 8317 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8318 | uiout->text (" (exec'd "); |
8319 | uiout->field_string ("new-exec", c->exec_pathname); | |
8320 | uiout->text ("), "); | |
36dfb11c | 8321 | |
fe798b75 | 8322 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8323 | } |
8324 | ||
fe798b75 | 8325 | static void |
a6d9a66e | 8326 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8327 | { |
b4d90040 | 8328 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8329 | struct value_print_options opts; |
79a45e25 | 8330 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8331 | |
8332 | get_user_print_options (&opts); | |
8333 | ||
8334 | /* Field 4, the address, is omitted (which makes the columns | |
8335 | not line up too nicely with the headers, but the effect | |
8336 | is relatively readable). */ | |
8337 | if (opts.addressprint) | |
112e8700 | 8338 | uiout->field_skip ("addr"); |
fe798b75 | 8339 | annotate_field (5); |
112e8700 | 8340 | uiout->text ("exec"); |
b4d90040 | 8341 | if (c->exec_pathname != NULL) |
fe798b75 | 8342 | { |
112e8700 SM |
8343 | uiout->text (", program \""); |
8344 | uiout->field_string ("what", c->exec_pathname); | |
8345 | uiout->text ("\" "); | |
fe798b75 | 8346 | } |
8ac3646f | 8347 | |
112e8700 SM |
8348 | if (uiout->is_mi_like_p ()) |
8349 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8350 | } |
8351 | ||
8352 | static void | |
8353 | print_mention_catch_exec (struct breakpoint *b) | |
8354 | { | |
8355 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8356 | } | |
8357 | ||
6149aea9 PA |
8358 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8359 | catchpoints. */ | |
8360 | ||
8361 | static void | |
8362 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8363 | { | |
8364 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8365 | print_recreate_thread (b, fp); |
6149aea9 PA |
8366 | } |
8367 | ||
2060206e | 8368 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8369 | |
c906108c | 8370 | static int |
fba45db2 | 8371 | hw_breakpoint_used_count (void) |
c906108c | 8372 | { |
c906108c | 8373 | int i = 0; |
f1310107 TJB |
8374 | struct breakpoint *b; |
8375 | struct bp_location *bl; | |
c906108c SS |
8376 | |
8377 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8378 | { |
d6b74ac4 | 8379 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8380 | for (bl = b->loc; bl; bl = bl->next) |
8381 | { | |
8382 | /* Special types of hardware breakpoints may use more than | |
8383 | one register. */ | |
348d480f | 8384 | i += b->ops->resources_needed (bl); |
f1310107 | 8385 | } |
c5aa993b | 8386 | } |
c906108c SS |
8387 | |
8388 | return i; | |
8389 | } | |
8390 | ||
a1398e0c PA |
8391 | /* Returns the resources B would use if it were a hardware |
8392 | watchpoint. */ | |
8393 | ||
c906108c | 8394 | static int |
a1398e0c | 8395 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8396 | { |
c906108c | 8397 | int i = 0; |
e09342b5 | 8398 | struct bp_location *bl; |
c906108c | 8399 | |
a1398e0c PA |
8400 | if (!breakpoint_enabled (b)) |
8401 | return 0; | |
8402 | ||
8403 | for (bl = b->loc; bl; bl = bl->next) | |
8404 | { | |
8405 | /* Special types of hardware watchpoints may use more than | |
8406 | one register. */ | |
8407 | i += b->ops->resources_needed (bl); | |
8408 | } | |
8409 | ||
8410 | return i; | |
8411 | } | |
8412 | ||
8413 | /* Returns the sum the used resources of all hardware watchpoints of | |
8414 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8415 | the sum of the used resources of all hardware watchpoints of other | |
8416 | types _not_ TYPE. */ | |
8417 | ||
8418 | static int | |
8419 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8420 | enum bptype type, int *other_type_used) | |
8421 | { | |
8422 | int i = 0; | |
8423 | struct breakpoint *b; | |
8424 | ||
c906108c SS |
8425 | *other_type_used = 0; |
8426 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8427 | { |
a1398e0c PA |
8428 | if (b == except) |
8429 | continue; | |
e09342b5 TJB |
8430 | if (!breakpoint_enabled (b)) |
8431 | continue; | |
8432 | ||
a1398e0c PA |
8433 | if (b->type == type) |
8434 | i += hw_watchpoint_use_count (b); | |
8435 | else if (is_hardware_watchpoint (b)) | |
8436 | *other_type_used = 1; | |
e09342b5 TJB |
8437 | } |
8438 | ||
c906108c SS |
8439 | return i; |
8440 | } | |
8441 | ||
c906108c | 8442 | void |
fba45db2 | 8443 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8444 | { |
c5aa993b | 8445 | struct breakpoint *b; |
c906108c SS |
8446 | |
8447 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8448 | { |
cc60f2e3 | 8449 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8450 | { |
b5de0fa7 | 8451 | b->enable_state = bp_call_disabled; |
44702360 | 8452 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8453 | } |
8454 | } | |
c906108c SS |
8455 | } |
8456 | ||
8457 | void | |
fba45db2 | 8458 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8459 | { |
c5aa993b | 8460 | struct breakpoint *b; |
c906108c SS |
8461 | |
8462 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8463 | { |
cc60f2e3 | 8464 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8465 | { |
b5de0fa7 | 8466 | b->enable_state = bp_enabled; |
44702360 | 8467 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8468 | } |
8469 | } | |
c906108c SS |
8470 | } |
8471 | ||
8bea4e01 UW |
8472 | void |
8473 | disable_breakpoints_before_startup (void) | |
8474 | { | |
6c95b8df | 8475 | current_program_space->executing_startup = 1; |
44702360 | 8476 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8477 | } |
8478 | ||
8479 | void | |
8480 | enable_breakpoints_after_startup (void) | |
8481 | { | |
6c95b8df | 8482 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8483 | breakpoint_re_set (); |
8bea4e01 UW |
8484 | } |
8485 | ||
7c16b83e PA |
8486 | /* Create a new single-step breakpoint for thread THREAD, with no |
8487 | locations. */ | |
c906108c | 8488 | |
7c16b83e PA |
8489 | static struct breakpoint * |
8490 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8491 | { | |
b270e6f9 | 8492 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8493 | |
b270e6f9 | 8494 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8495 | &momentary_breakpoint_ops); |
8496 | ||
8497 | b->disposition = disp_donttouch; | |
8498 | b->frame_id = null_frame_id; | |
8499 | ||
8500 | b->thread = thread; | |
8501 | gdb_assert (b->thread != 0); | |
8502 | ||
b270e6f9 | 8503 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8504 | } |
8505 | ||
8506 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8507 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8508 | frame. */ | |
c906108c | 8509 | |
454dafbd | 8510 | breakpoint_up |
a6d9a66e UW |
8511 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8512 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8513 | { |
52f0bd74 | 8514 | struct breakpoint *b; |
edb3359d | 8515 | |
193facb3 JK |
8516 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8517 | tail-called one. */ | |
8518 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8519 | |
06edf0c0 | 8520 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8521 | b->enable_state = bp_enabled; |
8522 | b->disposition = disp_donttouch; | |
818dd999 | 8523 | b->frame_id = frame_id; |
c906108c | 8524 | |
00431a78 | 8525 | b->thread = inferior_thread ()->global_num; |
c906108c | 8526 | |
44702360 | 8527 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8528 | |
454dafbd | 8529 | return breakpoint_up (b); |
c906108c | 8530 | } |
611c83ae | 8531 | |
06edf0c0 | 8532 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8533 | The new breakpoint will have type TYPE, use OPS as its |
8534 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8535 | |
06edf0c0 PA |
8536 | static struct breakpoint * |
8537 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8538 | enum bptype type, | |
a1aa2221 LM |
8539 | const struct breakpoint_ops *ops, |
8540 | int loc_enabled) | |
e58b0e63 PA |
8541 | { |
8542 | struct breakpoint *copy; | |
8543 | ||
06edf0c0 | 8544 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8545 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8546 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8547 | |
a6d9a66e | 8548 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8549 | copy->loc->requested_address = orig->loc->requested_address; |
8550 | copy->loc->address = orig->loc->address; | |
8551 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8552 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8553 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8554 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8555 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8556 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8557 | copy->frame_id = orig->frame_id; |
8558 | copy->thread = orig->thread; | |
6c95b8df | 8559 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8560 | |
8561 | copy->enable_state = bp_enabled; | |
8562 | copy->disposition = disp_donttouch; | |
8563 | copy->number = internal_breakpoint_number--; | |
8564 | ||
44702360 | 8565 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8566 | return copy; |
8567 | } | |
8568 | ||
06edf0c0 PA |
8569 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8570 | ORIG is NULL. */ | |
8571 | ||
8572 | struct breakpoint * | |
8573 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8574 | { | |
8575 | /* If there's nothing to clone, then return nothing. */ | |
8576 | if (orig == NULL) | |
8577 | return NULL; | |
8578 | ||
a1aa2221 | 8579 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8580 | } |
8581 | ||
454dafbd | 8582 | breakpoint_up |
a6d9a66e UW |
8583 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8584 | enum bptype type) | |
611c83ae PA |
8585 | { |
8586 | struct symtab_and_line sal; | |
8587 | ||
8588 | sal = find_pc_line (pc, 0); | |
8589 | sal.pc = pc; | |
8590 | sal.section = find_pc_overlay (pc); | |
8591 | sal.explicit_pc = 1; | |
8592 | ||
a6d9a66e | 8593 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8594 | } |
c906108c | 8595 | \f |
c5aa993b | 8596 | |
c906108c SS |
8597 | /* Tell the user we have just set a breakpoint B. */ |
8598 | ||
8599 | static void | |
fba45db2 | 8600 | mention (struct breakpoint *b) |
c906108c | 8601 | { |
348d480f | 8602 | b->ops->print_mention (b); |
2d33446d | 8603 | current_uiout->text ("\n"); |
c906108c | 8604 | } |
c906108c | 8605 | \f |
c5aa993b | 8606 | |
5133a315 | 8607 | static bool bp_loc_is_permanent (struct bp_location *loc); |
1a853c52 | 8608 | |
7f32a4d5 PA |
8609 | /* Handle "set breakpoint auto-hw on". |
8610 | ||
8611 | If the explicitly specified breakpoint type is not hardware | |
8612 | breakpoint, check the memory map to see whether the breakpoint | |
8613 | address is in read-only memory. | |
8614 | ||
8615 | - location type is not hardware breakpoint, memory is read-only. | |
8616 | We change the type of the location to hardware breakpoint. | |
8617 | ||
8618 | - location type is hardware breakpoint, memory is read-write. This | |
8619 | means we've previously made the location hardware one, but then the | |
8620 | memory map changed, so we undo. | |
8621 | */ | |
8622 | ||
8623 | static void | |
8624 | handle_automatic_hardware_breakpoints (bp_location *bl) | |
8625 | { | |
8626 | if (automatic_hardware_breakpoints | |
8627 | && bl->owner->type != bp_hardware_breakpoint | |
8628 | && (bl->loc_type == bp_loc_software_breakpoint | |
8629 | || bl->loc_type == bp_loc_hardware_breakpoint)) | |
8630 | { | |
8631 | /* When breakpoints are removed, remove_breakpoints will use | |
8632 | location types we've just set here, the only possible problem | |
8633 | is that memory map has changed during running program, but | |
8634 | it's not going to work anyway with current gdb. */ | |
8635 | mem_region *mr = lookup_mem_region (bl->address); | |
8636 | ||
8637 | if (mr != nullptr) | |
8638 | { | |
8639 | enum bp_loc_type new_type; | |
8640 | ||
8641 | if (mr->attrib.mode != MEM_RW) | |
8642 | new_type = bp_loc_hardware_breakpoint; | |
8643 | else | |
8644 | new_type = bp_loc_software_breakpoint; | |
8645 | ||
8646 | if (new_type != bl->loc_type) | |
8647 | { | |
8648 | static bool said = false; | |
8649 | ||
8650 | bl->loc_type = new_type; | |
8651 | if (!said) | |
8652 | { | |
8653 | fprintf_filtered (gdb_stdout, | |
8654 | _("Note: automatically using " | |
8655 | "hardware breakpoints for " | |
8656 | "read-only addresses.\n")); | |
8657 | said = true; | |
8658 | } | |
8659 | } | |
8660 | } | |
8661 | } | |
8662 | } | |
8663 | ||
0d381245 | 8664 | static struct bp_location * |
39d61571 | 8665 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8666 | const struct symtab_and_line *sal) |
8667 | { | |
8668 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8669 | CORE_ADDR adjusted_address; |
8670 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8671 | ||
8672 | if (loc_gdbarch == NULL) | |
8673 | loc_gdbarch = b->gdbarch; | |
8674 | ||
8675 | /* Adjust the breakpoint's address prior to allocating a location. | |
8676 | Once we call allocate_bp_location(), that mostly uninitialized | |
8677 | location will be placed on the location chain. Adjustment of the | |
8678 | breakpoint may cause target_read_memory() to be called and we do | |
8679 | not want its scan of the location chain to find a breakpoint and | |
8680 | location that's only been partially initialized. */ | |
8681 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8682 | sal->pc, b->type); | |
0d381245 | 8683 | |
d30113d4 | 8684 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8685 | loc = allocate_bp_location (b); |
d30113d4 JK |
8686 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8687 | tmp = &((*tmp)->next)) | |
0d381245 | 8688 | ; |
d30113d4 | 8689 | loc->next = *tmp; |
0d381245 | 8690 | *tmp = loc; |
3742cc8b | 8691 | |
0d381245 | 8692 | loc->requested_address = sal->pc; |
3742cc8b | 8693 | loc->address = adjusted_address; |
6c95b8df | 8694 | loc->pspace = sal->pspace; |
935676c9 | 8695 | loc->probe.prob = sal->prob; |
729662a5 | 8696 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8697 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8698 | loc->section = sal->section; |
3742cc8b | 8699 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8700 | loc->line_number = sal->line; |
2f202fde | 8701 | loc->symtab = sal->symtab; |
4a27f119 | 8702 | loc->symbol = sal->symbol; |
3467ec66 PA |
8703 | loc->msymbol = sal->msymbol; |
8704 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8705 | |
0ba852ab | 8706 | set_breakpoint_location_function (loc); |
1a853c52 | 8707 | |
6ae88661 LM |
8708 | /* While by definition, permanent breakpoints are already present in the |
8709 | code, we don't mark the location as inserted. Normally one would expect | |
8710 | that GDB could rely on that breakpoint instruction to stop the program, | |
8711 | thus removing the need to insert its own breakpoint, except that executing | |
8712 | the breakpoint instruction can kill the target instead of reporting a | |
8713 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8714 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8715 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8716 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8717 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8718 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8719 | it manually increments the PC, thus avoiding executing the breakpoint | |
8720 | instruction.) */ | |
1a853c52 | 8721 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8722 | loc->permanent = 1; |
1a853c52 | 8723 | |
0d381245 VP |
8724 | return loc; |
8725 | } | |
514f746b AR |
8726 | \f |
8727 | ||
5133a315 LM |
8728 | /* Return true if LOC is pointing to a permanent breakpoint, |
8729 | return false otherwise. */ | |
1cf4d951 | 8730 | |
5133a315 | 8731 | static bool |
1cf4d951 PA |
8732 | bp_loc_is_permanent (struct bp_location *loc) |
8733 | { | |
514f746b AR |
8734 | gdb_assert (loc != NULL); |
8735 | ||
cb1e4e32 PA |
8736 | /* If we have a non-breakpoint-backed catchpoint or a software |
8737 | watchpoint, just return 0. We should not attempt to read from | |
8738 | the addresses the locations of these breakpoint types point to. | |
5133a315 | 8739 | gdbarch_program_breakpoint_here_p, below, will attempt to read |
244558af | 8740 | memory. */ |
cb1e4e32 | 8741 | if (!bl_address_is_meaningful (loc)) |
5133a315 | 8742 | return false; |
244558af | 8743 | |
5ed8105e | 8744 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8745 | switch_to_program_space_and_thread (loc->pspace); |
5133a315 | 8746 | return gdbarch_program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8747 | } |
8748 | ||
e7e0cddf SS |
8749 | /* Build a command list for the dprintf corresponding to the current |
8750 | settings of the dprintf style options. */ | |
8751 | ||
8752 | static void | |
8753 | update_dprintf_command_list (struct breakpoint *b) | |
8754 | { | |
8755 | char *dprintf_args = b->extra_string; | |
8756 | char *printf_line = NULL; | |
8757 | ||
8758 | if (!dprintf_args) | |
8759 | return; | |
8760 | ||
8761 | dprintf_args = skip_spaces (dprintf_args); | |
8762 | ||
8763 | /* Allow a comma, as it may have terminated a location, but don't | |
8764 | insist on it. */ | |
8765 | if (*dprintf_args == ',') | |
8766 | ++dprintf_args; | |
8767 | dprintf_args = skip_spaces (dprintf_args); | |
8768 | ||
8769 | if (*dprintf_args != '"') | |
8770 | error (_("Bad format string, missing '\"'.")); | |
8771 | ||
d3ce09f5 | 8772 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8773 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8774 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8775 | { |
8776 | if (!dprintf_function) | |
8777 | error (_("No function supplied for dprintf call")); | |
8778 | ||
8779 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8780 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8781 | dprintf_function, | |
8782 | dprintf_channel, | |
8783 | dprintf_args); | |
8784 | else | |
8785 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8786 | dprintf_function, | |
8787 | dprintf_args); | |
8788 | } | |
d3ce09f5 SS |
8789 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8790 | { | |
8791 | if (target_can_run_breakpoint_commands ()) | |
8792 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8793 | else | |
8794 | { | |
8795 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8796 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8797 | } | |
8798 | } | |
e7e0cddf SS |
8799 | else |
8800 | internal_error (__FILE__, __LINE__, | |
8801 | _("Invalid dprintf style.")); | |
8802 | ||
f28045c2 | 8803 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8804 | |
12973681 TT |
8805 | /* Manufacture a printf sequence. */ |
8806 | struct command_line *printf_cmd_line | |
8807 | = new struct command_line (simple_control, printf_line); | |
8808 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8809 | command_lines_deleter ())); | |
e7e0cddf SS |
8810 | } |
8811 | ||
8812 | /* Update all dprintf commands, making their command lists reflect | |
8813 | current style settings. */ | |
8814 | ||
8815 | static void | |
eb4c3f4a | 8816 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8817 | struct cmd_list_element *c) |
8818 | { | |
8819 | struct breakpoint *b; | |
8820 | ||
8821 | ALL_BREAKPOINTS (b) | |
8822 | { | |
8823 | if (b->type == bp_dprintf) | |
8824 | update_dprintf_command_list (b); | |
8825 | } | |
8826 | } | |
c3f6f71d | 8827 | |
f00aae0f KS |
8828 | /* Create a breakpoint with SAL as location. Use LOCATION |
8829 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8830 | as condition expression. If LOCATION is NULL then create an |
8831 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8832 | |
8833 | static void | |
d9b3f62e | 8834 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8835 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8836 | event_location_up &&location, |
e1e01040 PA |
8837 | gdb::unique_xmalloc_ptr<char> filter, |
8838 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8839 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8840 | enum bptype type, enum bpdisp disposition, |
8841 | int thread, int task, int ignore_count, | |
c0a91b2b | 8842 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8843 | int enabled, int internal, unsigned flags, |
8844 | int display_canonical) | |
018d34a4 | 8845 | { |
0d381245 | 8846 | int i; |
018d34a4 VP |
8847 | |
8848 | if (type == bp_hardware_breakpoint) | |
8849 | { | |
fbbd034e AS |
8850 | int target_resources_ok; |
8851 | ||
8852 | i = hw_breakpoint_used_count (); | |
8853 | target_resources_ok = | |
8854 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8855 | i + 1, 0); |
8856 | if (target_resources_ok == 0) | |
8857 | error (_("No hardware breakpoint support in the target.")); | |
8858 | else if (target_resources_ok < 0) | |
8859 | error (_("Hardware breakpoints used exceeds limit.")); | |
8860 | } | |
8861 | ||
6c5b2ebe | 8862 | gdb_assert (!sals.empty ()); |
6c95b8df | 8863 | |
6c5b2ebe | 8864 | for (const auto &sal : sals) |
0d381245 | 8865 | { |
0d381245 VP |
8866 | struct bp_location *loc; |
8867 | ||
8868 | if (from_tty) | |
5af949e3 UW |
8869 | { |
8870 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8871 | if (!loc_gdbarch) | |
8872 | loc_gdbarch = gdbarch; | |
8873 | ||
8874 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8875 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8876 | } |
0d381245 | 8877 | |
6c5b2ebe | 8878 | if (&sal == &sals[0]) |
0d381245 | 8879 | { |
d9b3f62e | 8880 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8881 | b->thread = thread; |
4a306c9a | 8882 | b->task = task; |
855a6e68 | 8883 | |
e1e01040 PA |
8884 | b->cond_string = cond_string.release (); |
8885 | b->extra_string = extra_string.release (); | |
0d381245 | 8886 | b->ignore_count = ignore_count; |
41447f92 | 8887 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8888 | b->disposition = disposition; |
6c95b8df | 8889 | |
44f238bb PA |
8890 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8891 | b->loc->inserted = 1; | |
8892 | ||
0fb4aa4b PA |
8893 | if (type == bp_static_tracepoint) |
8894 | { | |
d9b3f62e | 8895 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8896 | struct static_tracepoint_marker marker; |
8897 | ||
983af33b | 8898 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8899 | { |
8900 | /* We already know the marker exists, otherwise, we | |
8901 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8902 | const char *p |
8903 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8904 | const char *endp; |
0fb4aa4b | 8905 | |
f1735a53 | 8906 | p = skip_spaces (p); |
0fb4aa4b | 8907 | |
f1735a53 | 8908 | endp = skip_to_space (p); |
0fb4aa4b | 8909 | |
5d9310c4 | 8910 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8911 | |
3e43a32a MS |
8912 | printf_filtered (_("Probed static tracepoint " |
8913 | "marker \"%s\"\n"), | |
5d9310c4 | 8914 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8915 | } |
8916 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8917 | { | |
5d9310c4 | 8918 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8919 | |
3e43a32a MS |
8920 | printf_filtered (_("Probed static tracepoint " |
8921 | "marker \"%s\"\n"), | |
5d9310c4 | 8922 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8923 | } |
8924 | else | |
3e43a32a MS |
8925 | warning (_("Couldn't determine the static " |
8926 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8927 | } |
8928 | ||
0d381245 VP |
8929 | loc = b->loc; |
8930 | } | |
8931 | else | |
018d34a4 | 8932 | { |
39d61571 | 8933 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8934 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8935 | loc->inserted = 1; | |
0d381245 VP |
8936 | } |
8937 | ||
b5fa468f TBA |
8938 | /* Do not set breakpoint locations conditions yet. As locations |
8939 | are inserted, they get sorted based on their addresses. Let | |
8940 | the list stabilize to have reliable location numbers. */ | |
e7e0cddf SS |
8941 | |
8942 | /* Dynamic printf requires and uses additional arguments on the | |
8943 | command line, otherwise it's an error. */ | |
8944 | if (type == bp_dprintf) | |
8945 | { | |
8946 | if (b->extra_string) | |
8947 | update_dprintf_command_list (b); | |
8948 | else | |
8949 | error (_("Format string required")); | |
8950 | } | |
8951 | else if (b->extra_string) | |
588ae58c | 8952 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8953 | } |
018d34a4 | 8954 | |
b5fa468f TBA |
8955 | |
8956 | /* The order of the locations is now stable. Set the location | |
8957 | condition using the location's number. */ | |
8958 | int loc_num = 1; | |
8959 | for (bp_location *loc = b->loc; loc != nullptr; loc = loc->next) | |
8960 | { | |
8961 | if (b->cond_string != nullptr) | |
8962 | set_breakpoint_location_condition (b->cond_string, loc, b->number, | |
8963 | loc_num); | |
8964 | ||
8965 | ++loc_num; | |
8966 | } | |
8967 | ||
56435ebe | 8968 | b->display_canonical = display_canonical; |
f00aae0f | 8969 | if (location != NULL) |
d28cd78a | 8970 | b->location = std::move (location); |
018d34a4 | 8971 | else |
d28cd78a | 8972 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8973 | b->filter = std::move (filter); |
d9b3f62e | 8974 | } |
018d34a4 | 8975 | |
d9b3f62e PA |
8976 | static void |
8977 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8978 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8979 | event_location_up &&location, |
e1e01040 PA |
8980 | gdb::unique_xmalloc_ptr<char> filter, |
8981 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8982 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8983 | enum bptype type, enum bpdisp disposition, |
8984 | int thread, int task, int ignore_count, | |
c0a91b2b | 8985 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8986 | int enabled, int internal, unsigned flags, |
8987 | int display_canonical) | |
d9b3f62e | 8988 | { |
a5e364af | 8989 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8990 | |
a5e364af | 8991 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8992 | sals, std::move (location), |
e1e01040 PA |
8993 | std::move (filter), |
8994 | std::move (cond_string), | |
8995 | std::move (extra_string), | |
d9b3f62e PA |
8996 | type, disposition, |
8997 | thread, task, ignore_count, | |
8998 | ops, from_tty, | |
44f238bb PA |
8999 | enabled, internal, flags, |
9000 | display_canonical); | |
d9b3f62e | 9001 | |
b270e6f9 | 9002 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
9003 | } |
9004 | ||
9005 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9006 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9007 | value. COND_STRING, if not NULL, specified the condition to be | |
9008 | used for all breakpoints. Essentially the only case where | |
9009 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9010 | function. In that case, it's still not possible to specify | |
9011 | separate conditions for different overloaded functions, so | |
9012 | we take just a single condition string. | |
9013 | ||
c3f6f71d | 9014 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9015 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9016 | array contents). If the function fails (error() is called), the |
9017 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9018 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9019 | |
9020 | static void | |
8cdf0e15 | 9021 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9022 | struct linespec_result *canonical, |
e1e01040 PA |
9023 | gdb::unique_xmalloc_ptr<char> cond_string, |
9024 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
9025 | enum bptype type, enum bpdisp disposition, |
9026 | int thread, int task, int ignore_count, | |
c0a91b2b | 9027 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9028 | int enabled, int internal, unsigned flags) |
c906108c | 9029 | { |
f8eba3c6 | 9030 | if (canonical->pre_expanded) |
6c5b2ebe | 9031 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 9032 | |
6c5b2ebe | 9033 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 9034 | { |
f00aae0f | 9035 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 9036 | 'break', without arguments. */ |
ffc2605c | 9037 | event_location_up location |
f00aae0f | 9038 | = (canonical->location != NULL |
8e9e35b1 | 9039 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 9040 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 9041 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 9042 | |
6c5b2ebe | 9043 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 9044 | std::move (location), |
e1e01040 PA |
9045 | std::move (filter_string), |
9046 | std::move (cond_string), | |
9047 | std::move (extra_string), | |
e7e0cddf | 9048 | type, disposition, |
84f4c1fe | 9049 | thread, task, ignore_count, ops, |
44f238bb | 9050 | from_tty, enabled, internal, flags, |
56435ebe | 9051 | canonical->special_display); |
c3f6f71d | 9052 | } |
c3f6f71d | 9053 | } |
c906108c | 9054 | |
f00aae0f | 9055 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 9056 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
9057 | addresses found. LOCATION points to the end of the SAL (for |
9058 | linespec locations). | |
9998af43 TJB |
9059 | |
9060 | The array and the line spec strings are allocated on the heap, it is | |
9061 | the caller's responsibility to free them. */ | |
c906108c | 9062 | |
b9362cc7 | 9063 | static void |
626d2320 | 9064 | parse_breakpoint_sals (struct event_location *location, |
58438ac1 | 9065 | struct linespec_result *canonical) |
c3f6f71d | 9066 | { |
f00aae0f KS |
9067 | struct symtab_and_line cursal; |
9068 | ||
9069 | if (event_location_type (location) == LINESPEC_LOCATION) | |
9070 | { | |
a20714ff | 9071 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 9072 | |
a20714ff | 9073 | if (spec == NULL) |
f00aae0f KS |
9074 | { |
9075 | /* The last displayed codepoint, if it's valid, is our default | |
9076 | breakpoint address. */ | |
9077 | if (last_displayed_sal_is_valid ()) | |
9078 | { | |
f00aae0f KS |
9079 | /* Set sal's pspace, pc, symtab, and line to the values |
9080 | corresponding to the last call to print_frame_info. | |
9081 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9082 | as the breakpoint line number is inappropriate otherwise. | |
9083 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
9084 | symtab_and_line sal = get_last_displayed_sal (); |
9085 | CORE_ADDR pc = sal.pc; | |
9086 | ||
f00aae0f KS |
9087 | sal = find_pc_line (pc, 0); |
9088 | ||
9089 | /* "break" without arguments is equivalent to "break *PC" | |
9090 | where PC is the last displayed codepoint's address. So | |
9091 | make sure to set sal.explicit_pc to prevent GDB from | |
9092 | trying to expand the list of sals to include all other | |
9093 | instances with the same symtab and line. */ | |
9094 | sal.pc = pc; | |
9095 | sal.explicit_pc = 1; | |
9096 | ||
6c5b2ebe PA |
9097 | struct linespec_sals lsal; |
9098 | lsal.sals = {sal}; | |
f00aae0f KS |
9099 | lsal.canonical = NULL; |
9100 | ||
6c5b2ebe | 9101 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
9102 | return; |
9103 | } | |
9104 | else | |
9105 | error (_("No default breakpoint address now.")); | |
c906108c | 9106 | } |
c906108c | 9107 | } |
f00aae0f KS |
9108 | |
9109 | /* Force almost all breakpoints to be in terms of the | |
9110 | current_source_symtab (which is decode_line_1's default). | |
9111 | This should produce the results we want almost all of the | |
9112 | time while leaving default_breakpoint_* alone. | |
9113 | ||
9114 | ObjC: However, don't match an Objective-C method name which | |
9115 | may have a '+' or '-' succeeded by a '['. */ | |
9116 | cursal = get_current_source_symtab_and_line (); | |
9117 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9118 | { |
a20714ff | 9119 | const char *spec = NULL; |
cc80f267 | 9120 | |
f00aae0f | 9121 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9122 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9123 | |
f00aae0f | 9124 | if (!cursal.symtab |
a20714ff PA |
9125 | || (spec != NULL |
9126 | && strchr ("+-", spec[0]) != NULL | |
9127 | && spec[1] != '[')) | |
f00aae0f | 9128 | { |
c2f4122d | 9129 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9130 | get_last_displayed_symtab (), |
9131 | get_last_displayed_line (), | |
9132 | canonical, NULL, NULL); | |
9133 | return; | |
9134 | } | |
c906108c | 9135 | } |
f00aae0f | 9136 | |
c2f4122d | 9137 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9138 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9139 | } |
c906108c | 9140 | |
c906108c | 9141 | |
c3f6f71d | 9142 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9143 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9144 | |
b9362cc7 | 9145 | static void |
6c5b2ebe | 9146 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9147 | { |
6c5b2ebe PA |
9148 | for (auto &sal : sals) |
9149 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9150 | } |
9151 | ||
7a697b8d SS |
9152 | /* Fast tracepoints may have restrictions on valid locations. For |
9153 | instance, a fast tracepoint using a jump instead of a trap will | |
9154 | likely have to overwrite more bytes than a trap would, and so can | |
9155 | only be placed where the instruction is longer than the jump, or a | |
9156 | multi-instruction sequence does not have a jump into the middle of | |
9157 | it, etc. */ | |
9158 | ||
9159 | static void | |
9160 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9161 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9162 | { |
6c5b2ebe | 9163 | for (const auto &sal : sals) |
7a697b8d | 9164 | { |
f8eba3c6 TT |
9165 | struct gdbarch *sarch; |
9166 | ||
6c5b2ebe | 9167 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9168 | /* We fall back to GDBARCH if there is no architecture |
9169 | associated with SAL. */ | |
9170 | if (sarch == NULL) | |
9171 | sarch = gdbarch; | |
281d762b TT |
9172 | std::string msg; |
9173 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9174 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9175 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9176 | } |
9177 | } | |
9178 | ||
018d34a4 VP |
9179 | /* Given TOK, a string specification of condition and thread, as |
9180 | accepted by the 'break' command, extract the condition | |
9181 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9182 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9183 | If no condition is found, *COND_STRING is set to NULL. |
9184 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9185 | |
9186 | static void | |
bbc13ae3 | 9187 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9188 | char **cond_string, int *thread, int *task, |
9189 | char **rest) | |
018d34a4 VP |
9190 | { |
9191 | *cond_string = NULL; | |
9192 | *thread = -1; | |
ed1d1739 KS |
9193 | *task = 0; |
9194 | *rest = NULL; | |
733d554a | 9195 | bool force = false; |
ed1d1739 | 9196 | |
018d34a4 VP |
9197 | while (tok && *tok) |
9198 | { | |
bbc13ae3 | 9199 | const char *end_tok; |
018d34a4 | 9200 | int toklen; |
bbc13ae3 KS |
9201 | const char *cond_start = NULL; |
9202 | const char *cond_end = NULL; | |
cc59ec59 | 9203 | |
f1735a53 | 9204 | tok = skip_spaces (tok); |
e7e0cddf SS |
9205 | |
9206 | if ((*tok == '"' || *tok == ',') && rest) | |
9207 | { | |
9208 | *rest = savestring (tok, strlen (tok)); | |
9209 | return; | |
9210 | } | |
9211 | ||
f1735a53 | 9212 | end_tok = skip_to_space (tok); |
d634f2de | 9213 | |
018d34a4 | 9214 | toklen = end_tok - tok; |
d634f2de | 9215 | |
018d34a4 VP |
9216 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9217 | { | |
9218 | tok = cond_start = end_tok + 1; | |
733d554a TBA |
9219 | try |
9220 | { | |
9221 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); | |
9222 | } | |
9223 | catch (const gdb_exception_error &) | |
9224 | { | |
9225 | if (!force) | |
9226 | throw; | |
9227 | else | |
9228 | tok = tok + strlen (tok); | |
9229 | } | |
018d34a4 | 9230 | cond_end = tok; |
d634f2de | 9231 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 | 9232 | } |
733d554a TBA |
9233 | else if (toklen >= 1 && strncmp (tok, "-force-condition", toklen) == 0) |
9234 | { | |
5759831a | 9235 | tok = tok + toklen; |
733d554a TBA |
9236 | force = true; |
9237 | } | |
018d34a4 VP |
9238 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) |
9239 | { | |
5d5658a1 PA |
9240 | const char *tmptok; |
9241 | struct thread_info *thr; | |
d634f2de | 9242 | |
018d34a4 | 9243 | tok = end_tok + 1; |
5d5658a1 | 9244 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9245 | if (tok == tmptok) |
9246 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9247 | *thread = thr->global_num; |
bbc13ae3 | 9248 | tok = tmptok; |
018d34a4 | 9249 | } |
4a306c9a JB |
9250 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9251 | { | |
9252 | char *tmptok; | |
9253 | ||
9254 | tok = end_tok + 1; | |
bbc13ae3 | 9255 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9256 | if (tok == tmptok) |
9257 | error (_("Junk after task keyword.")); | |
9258 | if (!valid_task_id (*task)) | |
b6199126 | 9259 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9260 | tok = tmptok; |
4a306c9a | 9261 | } |
e7e0cddf SS |
9262 | else if (rest) |
9263 | { | |
9264 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9265 | return; |
e7e0cddf | 9266 | } |
018d34a4 VP |
9267 | else |
9268 | error (_("Junk at end of arguments.")); | |
9269 | } | |
9270 | } | |
9271 | ||
b5fa468f TBA |
9272 | /* Call 'find_condition_and_thread' for each sal in SALS until a parse |
9273 | succeeds. The parsed values are written to COND_STRING, THREAD, | |
9274 | TASK, and REST. See the comment of 'find_condition_and_thread' | |
9275 | for the description of these parameters and INPUT. */ | |
9276 | ||
9277 | static void | |
9278 | find_condition_and_thread_for_sals (const std::vector<symtab_and_line> &sals, | |
9279 | const char *input, char **cond_string, | |
9280 | int *thread, int *task, char **rest) | |
9281 | { | |
9282 | int num_failures = 0; | |
9283 | for (auto &sal : sals) | |
9284 | { | |
9285 | char *cond = nullptr; | |
9286 | int thread_id = 0; | |
9287 | int task_id = 0; | |
9288 | char *remaining = nullptr; | |
9289 | ||
9290 | /* Here we want to parse 'arg' to separate condition from thread | |
9291 | number. But because parsing happens in a context and the | |
9292 | contexts of sals might be different, try each until there is | |
9293 | success. Finding one successful parse is sufficient for our | |
9294 | goal. When setting the breakpoint we'll re-parse the | |
9295 | condition in the context of each sal. */ | |
9296 | try | |
9297 | { | |
9298 | find_condition_and_thread (input, sal.pc, &cond, &thread_id, | |
9299 | &task_id, &remaining); | |
9300 | *cond_string = cond; | |
9301 | *thread = thread_id; | |
9302 | *task = task_id; | |
9303 | *rest = remaining; | |
9304 | break; | |
9305 | } | |
9306 | catch (const gdb_exception_error &e) | |
9307 | { | |
9308 | num_failures++; | |
9309 | /* If no sal remains, do not continue. */ | |
9310 | if (num_failures == sals.size ()) | |
9311 | throw; | |
9312 | } | |
9313 | } | |
9314 | } | |
9315 | ||
0fb4aa4b PA |
9316 | /* Decode a static tracepoint marker spec. */ |
9317 | ||
6c5b2ebe | 9318 | static std::vector<symtab_and_line> |
f00aae0f | 9319 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9320 | { |
f00aae0f KS |
9321 | const char *p = &(*arg_p)[3]; |
9322 | const char *endp; | |
0fb4aa4b | 9323 | |
f1735a53 | 9324 | p = skip_spaces (p); |
0fb4aa4b | 9325 | |
f1735a53 | 9326 | endp = skip_to_space (p); |
0fb4aa4b | 9327 | |
81b1e71c | 9328 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9329 | |
5d9310c4 SM |
9330 | std::vector<static_tracepoint_marker> markers |
9331 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9332 | if (markers.empty ()) | |
81b1e71c TT |
9333 | error (_("No known static tracepoint marker named %s"), |
9334 | marker_str.c_str ()); | |
0fb4aa4b | 9335 | |
6c5b2ebe | 9336 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9337 | sals.reserve (markers.size ()); |
0fb4aa4b | 9338 | |
5d9310c4 | 9339 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9340 | { |
5d9310c4 SM |
9341 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9342 | sal.pc = marker.address; | |
6c5b2ebe | 9343 | sals.push_back (sal); |
5d9310c4 | 9344 | } |
0fb4aa4b | 9345 | |
0fb4aa4b PA |
9346 | *arg_p = endp; |
9347 | return sals; | |
9348 | } | |
9349 | ||
bac7c5cf GB |
9350 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
9351 | according to IS_TRACEPOINT. */ | |
9352 | ||
9353 | static const struct breakpoint_ops * | |
9354 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
9355 | bool is_tracepoint) | |
9356 | { | |
9357 | if (is_tracepoint) | |
9358 | { | |
9359 | if (location_type == PROBE_LOCATION) | |
9360 | return &tracepoint_probe_breakpoint_ops; | |
9361 | else | |
9362 | return &tracepoint_breakpoint_ops; | |
9363 | } | |
9364 | else | |
9365 | { | |
9366 | if (location_type == PROBE_LOCATION) | |
9367 | return &bkpt_probe_breakpoint_ops; | |
9368 | else | |
9369 | return &bkpt_breakpoint_ops; | |
9370 | } | |
9371 | } | |
9372 | ||
9373 | /* See breakpoint.h. */ | |
9374 | ||
9375 | const struct breakpoint_ops * | |
9376 | breakpoint_ops_for_event_location (const struct event_location *location, | |
9377 | bool is_tracepoint) | |
9378 | { | |
9379 | if (location != nullptr) | |
9380 | return breakpoint_ops_for_event_location_type | |
9381 | (event_location_type (location), is_tracepoint); | |
9382 | return is_tracepoint ? &tracepoint_breakpoint_ops : &bkpt_breakpoint_ops; | |
9383 | } | |
9384 | ||
f00aae0f | 9385 | /* See breakpoint.h. */ |
0101ce28 | 9386 | |
8cdf0e15 VP |
9387 | int |
9388 | create_breakpoint (struct gdbarch *gdbarch, | |
626d2320 | 9389 | struct event_location *location, |
e1e01040 PA |
9390 | const char *cond_string, |
9391 | int thread, const char *extra_string, | |
f00aae0f | 9392 | int parse_extra, |
0fb4aa4b | 9393 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9394 | int ignore_count, |
9395 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9396 | const struct breakpoint_ops *ops, |
44f238bb PA |
9397 | int from_tty, int enabled, int internal, |
9398 | unsigned flags) | |
c3f6f71d | 9399 | { |
7efd8fc2 | 9400 | struct linespec_result canonical; |
0101ce28 | 9401 | int pending = 0; |
4a306c9a | 9402 | int task = 0; |
86b17b60 | 9403 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9404 | |
348d480f PA |
9405 | gdb_assert (ops != NULL); |
9406 | ||
f00aae0f KS |
9407 | /* If extra_string isn't useful, set it to NULL. */ |
9408 | if (extra_string != NULL && *extra_string == '\0') | |
9409 | extra_string = NULL; | |
9410 | ||
a70b8144 | 9411 | try |
b78a6381 | 9412 | { |
f00aae0f | 9413 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9414 | } |
230d2906 | 9415 | catch (const gdb_exception_error &e) |
0101ce28 | 9416 | { |
492d29ea PA |
9417 | /* If caller is interested in rc value from parse, set |
9418 | value. */ | |
9419 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9420 | { |
05ff989b AC |
9421 | /* If pending breakpoint support is turned off, throw |
9422 | error. */ | |
fa8d40ab JJ |
9423 | |
9424 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9425 | throw; |
723a2275 VP |
9426 | |
9427 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9428 | |
dda83cd7 | 9429 | /* If pending breakpoint support is auto query and the user |
05ff989b | 9430 | selects no, then simply return the error code. */ |
059fb39f | 9431 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9432 | && !nquery (_("Make %s pending on future shared library load? "), |
9433 | bptype_string (type_wanted))) | |
fd9b8c24 | 9434 | return 0; |
fa8d40ab | 9435 | |
05ff989b AC |
9436 | /* At this point, either the user was queried about setting |
9437 | a pending breakpoint and selected yes, or pending | |
9438 | breakpoint behavior is on and thus a pending breakpoint | |
9439 | is defaulted on behalf of the user. */ | |
f00aae0f | 9440 | pending = 1; |
0101ce28 | 9441 | } |
492d29ea | 9442 | else |
eedc3f4f | 9443 | throw; |
0101ce28 | 9444 | } |
492d29ea | 9445 | |
6c5b2ebe | 9446 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9447 | return 0; |
c3f6f71d | 9448 | |
c3f6f71d JM |
9449 | /* Resolve all line numbers to PC's and verify that the addresses |
9450 | are ok for the target. */ | |
0101ce28 | 9451 | if (!pending) |
f8eba3c6 | 9452 | { |
6c5b2ebe PA |
9453 | for (auto &lsal : canonical.lsals) |
9454 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9455 | } |
c3f6f71d | 9456 | |
7a697b8d | 9457 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9458 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9459 | { |
6c5b2ebe PA |
9460 | for (const auto &lsal : canonical.lsals) |
9461 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9462 | } |
7a697b8d | 9463 | |
c3f6f71d JM |
9464 | /* Verify that condition can be parsed, before setting any |
9465 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9466 | breakpoint. */ |
0101ce28 | 9467 | if (!pending) |
c3f6f71d | 9468 | { |
e1e01040 PA |
9469 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9470 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9471 | ||
f00aae0f | 9472 | if (parse_extra) |
dda83cd7 | 9473 | { |
0878d0fa | 9474 | char *rest; |
e1e01040 | 9475 | char *cond; |
52d361e1 | 9476 | |
6c5b2ebe | 9477 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9478 | |
b5fa468f TBA |
9479 | find_condition_and_thread_for_sals (lsal.sals, extra_string, |
9480 | &cond, &thread, &task, &rest); | |
e1e01040 PA |
9481 | cond_string_copy.reset (cond); |
9482 | extra_string_copy.reset (rest); | |
dda83cd7 | 9483 | } |
2f069f6f | 9484 | else |
dda83cd7 | 9485 | { |
f00aae0f KS |
9486 | if (type_wanted != bp_dprintf |
9487 | && extra_string != NULL && *extra_string != '\0') | |
9488 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9489 | |
9490 | /* Create a private copy of condition string. */ | |
9491 | if (cond_string) | |
e1e01040 | 9492 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9493 | /* Create a private copy of any extra string. */ |
9494 | if (extra_string) | |
e1e01040 | 9495 | extra_string_copy.reset (xstrdup (extra_string)); |
dda83cd7 | 9496 | } |
0fb4aa4b | 9497 | |
52d361e1 | 9498 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9499 | std::move (cond_string_copy), |
9500 | std::move (extra_string_copy), | |
9501 | type_wanted, | |
d9b3f62e PA |
9502 | tempflag ? disp_del : disp_donttouch, |
9503 | thread, task, ignore_count, ops, | |
44f238bb | 9504 | from_tty, enabled, internal, flags); |
c906108c | 9505 | } |
0101ce28 JJ |
9506 | else |
9507 | { | |
a5e364af | 9508 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9509 | |
a5e364af | 9510 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9511 | b->location = copy_event_location (location); |
bfccc43c | 9512 | |
f00aae0f KS |
9513 | if (parse_extra) |
9514 | b->cond_string = NULL; | |
e12c7713 MK |
9515 | else |
9516 | { | |
9517 | /* Create a private copy of condition string. */ | |
e1e01040 | 9518 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9519 | b->thread = thread; |
e12c7713 | 9520 | } |
f00aae0f KS |
9521 | |
9522 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9523 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9524 | b->ignore_count = ignore_count; |
0101ce28 | 9525 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9526 | b->condition_not_parsed = 1; |
41447f92 | 9527 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 | 9528 | if ((type_wanted != bp_breakpoint |
dda83cd7 | 9529 | && type_wanted != bp_hardware_breakpoint) || thread != -1) |
f8eba3c6 | 9530 | b->pspace = current_program_space; |
8bea4e01 | 9531 | |
b270e6f9 | 9532 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9533 | } |
9534 | ||
6c5b2ebe | 9535 | if (canonical.lsals.size () > 1) |
95a42b64 | 9536 | { |
3e43a32a MS |
9537 | warning (_("Multiple breakpoints were set.\nUse the " |
9538 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9539 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9540 | } |
9541 | ||
44702360 | 9542 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9543 | |
9544 | return 1; | |
c3f6f71d | 9545 | } |
c906108c | 9546 | |
348d480f | 9547 | /* Set a breakpoint. |
72b2ff0e VP |
9548 | ARG is a string describing breakpoint address, |
9549 | condition, and thread. | |
9550 | FLAG specifies if a breakpoint is hardware on, | |
9551 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9552 | and BP_TEMPFLAG. */ | |
348d480f | 9553 | |
98deb0da | 9554 | static void |
f2fc3015 | 9555 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9556 | { |
72b2ff0e | 9557 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9558 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9559 | ? bp_hardware_breakpoint | |
9560 | : bp_breakpoint); | |
f00aae0f | 9561 | |
ffc2605c | 9562 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
9563 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
9564 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 9565 | |
8cdf0e15 | 9566 | create_breakpoint (get_current_arch (), |
ffc2605c | 9567 | location.get (), |
f00aae0f | 9568 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9569 | tempflag, type_wanted, |
8cdf0e15 VP |
9570 | 0 /* Ignore count */, |
9571 | pending_break_support, | |
55aa24fb | 9572 | ops, |
8cdf0e15 | 9573 | from_tty, |
84f4c1fe | 9574 | 1 /* enabled */, |
44f238bb PA |
9575 | 0 /* internal */, |
9576 | 0); | |
c906108c SS |
9577 | } |
9578 | ||
c906108c SS |
9579 | /* Helper function for break_command_1 and disassemble_command. */ |
9580 | ||
9581 | void | |
fba45db2 | 9582 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9583 | { |
9584 | CORE_ADDR pc; | |
9585 | ||
9586 | if (sal->pc == 0 && sal->symtab != NULL) | |
9587 | { | |
9588 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9589 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9590 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9591 | sal->pc = pc; |
6a048695 | 9592 | |
4a64f543 | 9593 | /* If this SAL corresponds to a breakpoint inserted using a line |
dda83cd7 | 9594 | number, then skip the function prologue if necessary. */ |
6a048695 | 9595 | if (sal->explicit_line) |
059acae7 | 9596 | skip_prologue_sal (sal); |
c906108c SS |
9597 | } |
9598 | ||
9599 | if (sal->section == 0 && sal->symtab != NULL) | |
9600 | { | |
346d1dfe | 9601 | const struct blockvector *bv; |
3977b71f | 9602 | const struct block *b; |
c5aa993b | 9603 | struct symbol *sym; |
c906108c | 9604 | |
43f3e411 DE |
9605 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9606 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9607 | if (bv != NULL) |
9608 | { | |
7f0df278 | 9609 | sym = block_linkage_function (b); |
c906108c SS |
9610 | if (sym != NULL) |
9611 | { | |
eb822aa6 DE |
9612 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9613 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9614 | sym); | |
c906108c SS |
9615 | } |
9616 | else | |
9617 | { | |
4a64f543 | 9618 | /* It really is worthwhile to have the section, so we'll |
dda83cd7 SM |
9619 | just have to look harder. This case can be executed |
9620 | if we have line numbers but no functions (as can | |
9621 | happen in assembly source). */ | |
c906108c | 9622 | |
5ed8105e | 9623 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9624 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9625 | |
5ed8105e | 9626 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9627 | if (msym.minsym) |
efd66ac6 | 9628 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9629 | } |
9630 | } | |
9631 | } | |
9632 | } | |
9633 | ||
9634 | void | |
0b39b52e | 9635 | break_command (const char *arg, int from_tty) |
c906108c | 9636 | { |
db107f19 | 9637 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9638 | } |
9639 | ||
c906108c | 9640 | void |
0b39b52e | 9641 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9642 | { |
db107f19 | 9643 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9644 | } |
9645 | ||
c906108c | 9646 | static void |
0b39b52e | 9647 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9648 | { |
db107f19 | 9649 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9650 | } |
9651 | ||
9652 | static void | |
0b39b52e | 9653 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9654 | { |
db107f19 | 9655 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9656 | } |
9657 | ||
9658 | static void | |
ee7ddd71 | 9659 | stop_command (const char *arg, int from_tty) |
c906108c | 9660 | { |
a3f17187 | 9661 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9662 | Usage: stop in <function | address>\n\ |
a3f17187 | 9663 | stop at <line>\n")); |
c906108c SS |
9664 | } |
9665 | ||
9666 | static void | |
4495129a | 9667 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9668 | { |
9669 | int badInput = 0; | |
9670 | ||
cafb3438 | 9671 | if (arg == NULL) |
c906108c SS |
9672 | badInput = 1; |
9673 | else if (*arg != '*') | |
9674 | { | |
4495129a | 9675 | const char *argptr = arg; |
c906108c SS |
9676 | int hasColon = 0; |
9677 | ||
4a64f543 | 9678 | /* Look for a ':'. If this is a line number specification, then |
dda83cd7 SM |
9679 | say it is bad, otherwise, it should be an address or |
9680 | function/method name. */ | |
c906108c | 9681 | while (*argptr && !hasColon) |
c5aa993b JM |
9682 | { |
9683 | hasColon = (*argptr == ':'); | |
9684 | argptr++; | |
9685 | } | |
c906108c SS |
9686 | |
9687 | if (hasColon) | |
c5aa993b | 9688 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9689 | else |
c5aa993b | 9690 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9691 | } |
9692 | ||
9693 | if (badInput) | |
a3f17187 | 9694 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9695 | else |
db107f19 | 9696 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9697 | } |
9698 | ||
9699 | static void | |
4495129a | 9700 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9701 | { |
9702 | int badInput = 0; | |
9703 | ||
cafb3438 | 9704 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9705 | badInput = 1; |
9706 | else | |
9707 | { | |
4495129a | 9708 | const char *argptr = arg; |
c906108c SS |
9709 | int hasColon = 0; |
9710 | ||
4a64f543 | 9711 | /* Look for a ':'. If there is a '::' then get out, otherwise |
dda83cd7 | 9712 | it is probably a line number. */ |
c906108c | 9713 | while (*argptr && !hasColon) |
c5aa993b JM |
9714 | { |
9715 | hasColon = (*argptr == ':'); | |
9716 | argptr++; | |
9717 | } | |
c906108c SS |
9718 | |
9719 | if (hasColon) | |
c5aa993b | 9720 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9721 | else |
c5aa993b | 9722 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9723 | } |
9724 | ||
9725 | if (badInput) | |
65e65158 | 9726 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9727 | else |
db107f19 | 9728 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9729 | } |
9730 | ||
e7e0cddf SS |
9731 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9732 | with a prewired command list consisting of a single output command, | |
9733 | built from extra arguments supplied on the dprintf command | |
9734 | line. */ | |
9735 | ||
da821c7b | 9736 | static void |
0b39b52e | 9737 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9738 | { |
ffc2605c | 9739 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9740 | |
9741 | /* If non-NULL, ARG should have been advanced past the location; | |
9742 | the next character must be ','. */ | |
9743 | if (arg != NULL) | |
9744 | { | |
9745 | if (arg[0] != ',' || arg[1] == '\0') | |
9746 | error (_("Format string required")); | |
9747 | else | |
9748 | { | |
9749 | /* Skip the comma. */ | |
9750 | ++arg; | |
9751 | } | |
9752 | } | |
9753 | ||
e7e0cddf | 9754 | create_breakpoint (get_current_arch (), |
ffc2605c | 9755 | location.get (), |
f00aae0f | 9756 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9757 | 0, bp_dprintf, |
9758 | 0 /* Ignore count */, | |
9759 | pending_break_support, | |
9760 | &dprintf_breakpoint_ops, | |
9761 | from_tty, | |
9762 | 1 /* enabled */, | |
9763 | 0 /* internal */, | |
9764 | 0); | |
9765 | } | |
9766 | ||
d3ce09f5 | 9767 | static void |
0b39b52e | 9768 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9769 | { |
9770 | error (_("May only run agent-printf on the target")); | |
9771 | } | |
9772 | ||
f1310107 TJB |
9773 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9774 | ranged breakpoints. */ | |
9775 | ||
9776 | static int | |
9777 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9778 | const address_space *aspace, |
09ac7c10 TT |
9779 | CORE_ADDR bp_addr, |
9780 | const struct target_waitstatus *ws) | |
f1310107 | 9781 | { |
09ac7c10 | 9782 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9783 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9784 | return 0; |
9785 | ||
f1310107 TJB |
9786 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9787 | bl->length, aspace, bp_addr); | |
9788 | } | |
9789 | ||
9790 | /* Implement the "resources_needed" breakpoint_ops method for | |
9791 | ranged breakpoints. */ | |
9792 | ||
9793 | static int | |
9794 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9795 | { | |
9796 | return target_ranged_break_num_registers (); | |
9797 | } | |
9798 | ||
9799 | /* Implement the "print_it" breakpoint_ops method for | |
9800 | ranged breakpoints. */ | |
9801 | ||
9802 | static enum print_stop_action | |
348d480f | 9803 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9804 | { |
348d480f | 9805 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9806 | struct bp_location *bl = b->loc; |
79a45e25 | 9807 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9808 | |
9809 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9810 | ||
9811 | /* Ranged breakpoints have only one location. */ | |
9812 | gdb_assert (bl && bl->next == NULL); | |
9813 | ||
9814 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9815 | |
9816 | maybe_print_thread_hit_breakpoint (uiout); | |
9817 | ||
f1310107 | 9818 | if (b->disposition == disp_del) |
112e8700 | 9819 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9820 | else |
112e8700 SM |
9821 | uiout->text ("Ranged breakpoint "); |
9822 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9823 | { |
112e8700 | 9824 | uiout->field_string ("reason", |
f1310107 | 9825 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9826 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9827 | } |
381befee | 9828 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 9829 | uiout->text (", "); |
f1310107 TJB |
9830 | |
9831 | return PRINT_SRC_AND_LOC; | |
9832 | } | |
9833 | ||
9834 | /* Implement the "print_one" breakpoint_ops method for | |
9835 | ranged breakpoints. */ | |
9836 | ||
9837 | static void | |
9838 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9839 | struct bp_location **last_loc) | |
9840 | { | |
9841 | struct bp_location *bl = b->loc; | |
9842 | struct value_print_options opts; | |
79a45e25 | 9843 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9844 | |
9845 | /* Ranged breakpoints have only one location. */ | |
9846 | gdb_assert (bl && bl->next == NULL); | |
9847 | ||
9848 | get_user_print_options (&opts); | |
9849 | ||
9850 | if (opts.addressprint) | |
9851 | /* We don't print the address range here, it will be printed later | |
9852 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9853 | uiout->field_skip ("addr"); |
f1310107 TJB |
9854 | annotate_field (5); |
9855 | print_breakpoint_location (b, bl); | |
9856 | *last_loc = bl; | |
9857 | } | |
9858 | ||
9859 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9860 | ranged breakpoints. */ | |
9861 | ||
9862 | static void | |
9863 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9864 | struct ui_out *uiout) | |
9865 | { | |
9866 | CORE_ADDR address_start, address_end; | |
9867 | struct bp_location *bl = b->loc; | |
d7e74731 | 9868 | string_file stb; |
f1310107 TJB |
9869 | |
9870 | gdb_assert (bl); | |
9871 | ||
9872 | address_start = bl->address; | |
9873 | address_end = address_start + bl->length - 1; | |
9874 | ||
112e8700 | 9875 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9876 | stb.printf ("[%s, %s]", |
9877 | print_core_address (bl->gdbarch, address_start), | |
9878 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9879 | uiout->field_stream ("addr", stb); |
9880 | uiout->text ("\n"); | |
f1310107 TJB |
9881 | } |
9882 | ||
9883 | /* Implement the "print_mention" breakpoint_ops method for | |
9884 | ranged breakpoints. */ | |
9885 | ||
9886 | static void | |
9887 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9888 | { | |
9889 | struct bp_location *bl = b->loc; | |
79a45e25 | 9890 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9891 | |
9892 | gdb_assert (bl); | |
9893 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9894 | ||
2d33446d TT |
9895 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9896 | b->number, paddress (bl->gdbarch, bl->address), | |
9897 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9898 | } |
9899 | ||
9900 | /* Implement the "print_recreate" breakpoint_ops method for | |
9901 | ranged breakpoints. */ | |
9902 | ||
9903 | static void | |
9904 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9905 | { | |
f00aae0f | 9906 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9907 | event_location_to_string (b->location.get ()), |
9908 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9909 | print_recreate_thread (b, fp); |
f1310107 TJB |
9910 | } |
9911 | ||
9912 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9913 | ||
2060206e | 9914 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9915 | |
9916 | /* Find the address where the end of the breakpoint range should be | |
9917 | placed, given the SAL of the end of the range. This is so that if | |
9918 | the user provides a line number, the end of the range is set to the | |
9919 | last instruction of the given line. */ | |
9920 | ||
9921 | static CORE_ADDR | |
9922 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9923 | { | |
9924 | CORE_ADDR end; | |
9925 | ||
9926 | /* If the user provided a PC value, use it. Otherwise, | |
9927 | find the address of the end of the given location. */ | |
9928 | if (sal.explicit_pc) | |
9929 | end = sal.pc; | |
9930 | else | |
9931 | { | |
9932 | int ret; | |
9933 | CORE_ADDR start; | |
9934 | ||
9935 | ret = find_line_pc_range (sal, &start, &end); | |
9936 | if (!ret) | |
9937 | error (_("Could not find location of the end of the range.")); | |
9938 | ||
9939 | /* find_line_pc_range returns the start of the next line. */ | |
9940 | end--; | |
9941 | } | |
9942 | ||
9943 | return end; | |
9944 | } | |
9945 | ||
9946 | /* Implement the "break-range" CLI command. */ | |
9947 | ||
9948 | static void | |
0b39b52e | 9949 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9950 | { |
f2fc3015 | 9951 | const char *arg_start; |
f1310107 TJB |
9952 | struct linespec_result canonical_start, canonical_end; |
9953 | int bp_count, can_use_bp, length; | |
9954 | CORE_ADDR end; | |
9955 | struct breakpoint *b; | |
f1310107 TJB |
9956 | |
9957 | /* We don't support software ranged breakpoints. */ | |
9958 | if (target_ranged_break_num_registers () < 0) | |
9959 | error (_("This target does not support hardware ranged breakpoints.")); | |
9960 | ||
9961 | bp_count = hw_breakpoint_used_count (); | |
9962 | bp_count += target_ranged_break_num_registers (); | |
9963 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9964 | bp_count, 0); | |
9965 | if (can_use_bp < 0) | |
9966 | error (_("Hardware breakpoints used exceeds limit.")); | |
9967 | ||
f8eba3c6 | 9968 | arg = skip_spaces (arg); |
f1310107 TJB |
9969 | if (arg == NULL || arg[0] == '\0') |
9970 | error(_("No address range specified.")); | |
9971 | ||
f8eba3c6 | 9972 | arg_start = arg; |
ffc2605c TT |
9973 | event_location_up start_location = string_to_event_location (&arg, |
9974 | current_language); | |
9975 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9976 | |
9977 | if (arg[0] != ',') | |
9978 | error (_("Too few arguments.")); | |
6c5b2ebe | 9979 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9980 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9981 | |
6c5b2ebe | 9982 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9983 | |
6c5b2ebe PA |
9984 | if (canonical_start.lsals.size () > 1 |
9985 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9986 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9987 | ||
6c5b2ebe | 9988 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9989 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9990 | |
9991 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9992 | arg = skip_spaces (arg); |
f1310107 TJB |
9993 | |
9994 | /* Parse the end location. */ | |
9995 | ||
f1310107 TJB |
9996 | arg_start = arg; |
9997 | ||
f8eba3c6 | 9998 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9999 | parse_breakpoint_sals because we need to specify the start location's |
10000 | symtab and line as the default symtab and line for the end of the | |
10001 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10002 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
10003 | event_location_up end_location = string_to_event_location (&arg, |
10004 | current_language); | |
10005 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
10006 | sal_start.symtab, sal_start.line, |
10007 | &canonical_end, NULL, NULL); | |
10008 | ||
6c5b2ebe | 10009 | if (canonical_end.lsals.empty ()) |
f1310107 | 10010 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 10011 | |
6c5b2ebe PA |
10012 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
10013 | if (canonical_end.lsals.size () > 1 | |
10014 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
10015 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10016 | ||
6c5b2ebe | 10017 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
10018 | |
10019 | end = find_breakpoint_range_end (sal_end); | |
10020 | if (sal_start.pc > end) | |
177b42fe | 10021 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10022 | |
10023 | length = end - sal_start.pc + 1; | |
10024 | if (length < 0) | |
10025 | /* Length overflowed. */ | |
10026 | error (_("Address range too large.")); | |
10027 | else if (length == 1) | |
10028 | { | |
10029 | /* This range is simple enough to be handled by | |
10030 | the `hbreak' command. */ | |
81b1e71c | 10031 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
10032 | |
10033 | return; | |
10034 | } | |
10035 | ||
10036 | /* Now set up the breakpoint. */ | |
10037 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10038 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10039 | set_breakpoint_count (breakpoint_count + 1); |
10040 | b->number = breakpoint_count; | |
10041 | b->disposition = disp_donttouch; | |
d28cd78a TT |
10042 | b->location = std::move (start_location); |
10043 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
10044 | b->loc->length = length; |
10045 | ||
f1310107 | 10046 | mention (b); |
76727919 | 10047 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 10048 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10049 | } |
10050 | ||
4a64f543 MS |
10051 | /* Return non-zero if EXP is verified as constant. Returned zero |
10052 | means EXP is variable. Also the constant detection may fail for | |
10053 | some constant expressions and in such case still falsely return | |
10054 | zero. */ | |
2e6e3d9c | 10055 | |
dab72643 | 10056 | static bool |
65d79d4b SDJ |
10057 | watchpoint_exp_is_const (const struct expression *exp) |
10058 | { | |
10059 | int i = exp->nelts; | |
10060 | ||
10061 | while (i > 0) | |
10062 | { | |
10063 | int oplenp, argsp; | |
10064 | ||
10065 | /* We are only interested in the descriptor of each element. */ | |
10066 | operator_length (exp, i, &oplenp, &argsp); | |
10067 | i -= oplenp; | |
10068 | ||
10069 | switch (exp->elts[i].opcode) | |
10070 | { | |
10071 | case BINOP_ADD: | |
10072 | case BINOP_SUB: | |
10073 | case BINOP_MUL: | |
10074 | case BINOP_DIV: | |
10075 | case BINOP_REM: | |
10076 | case BINOP_MOD: | |
10077 | case BINOP_LSH: | |
10078 | case BINOP_RSH: | |
10079 | case BINOP_LOGICAL_AND: | |
10080 | case BINOP_LOGICAL_OR: | |
10081 | case BINOP_BITWISE_AND: | |
10082 | case BINOP_BITWISE_IOR: | |
10083 | case BINOP_BITWISE_XOR: | |
10084 | case BINOP_EQUAL: | |
10085 | case BINOP_NOTEQUAL: | |
10086 | case BINOP_LESS: | |
10087 | case BINOP_GTR: | |
10088 | case BINOP_LEQ: | |
10089 | case BINOP_GEQ: | |
10090 | case BINOP_REPEAT: | |
10091 | case BINOP_COMMA: | |
10092 | case BINOP_EXP: | |
10093 | case BINOP_MIN: | |
10094 | case BINOP_MAX: | |
10095 | case BINOP_INTDIV: | |
10096 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10097 | case TERNOP_COND: |
10098 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10099 | |
10100 | case OP_LONG: | |
edd079d9 | 10101 | case OP_FLOAT: |
65d79d4b SDJ |
10102 | case OP_LAST: |
10103 | case OP_COMPLEX: | |
10104 | case OP_STRING: | |
65d79d4b SDJ |
10105 | case OP_ARRAY: |
10106 | case OP_TYPE: | |
608b4967 TT |
10107 | case OP_TYPEOF: |
10108 | case OP_DECLTYPE: | |
6e72ca20 | 10109 | case OP_TYPEID: |
65d79d4b SDJ |
10110 | case OP_NAME: |
10111 | case OP_OBJC_NSSTRING: | |
10112 | ||
10113 | case UNOP_NEG: | |
10114 | case UNOP_LOGICAL_NOT: | |
10115 | case UNOP_COMPLEMENT: | |
10116 | case UNOP_ADDR: | |
10117 | case UNOP_HIGH: | |
aeaa2474 | 10118 | case UNOP_CAST: |
9eaf6705 TT |
10119 | |
10120 | case UNOP_CAST_TYPE: | |
10121 | case UNOP_REINTERPRET_CAST: | |
10122 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10123 | /* Unary, binary and ternary operators: We have to check |
10124 | their operands. If they are constant, then so is the | |
10125 | result of that operation. For instance, if A and B are | |
10126 | determined to be constants, then so is "A + B". | |
10127 | ||
10128 | UNOP_IND is one exception to the rule above, because the | |
10129 | value of *ADDR is not necessarily a constant, even when | |
10130 | ADDR is. */ | |
65d79d4b SDJ |
10131 | break; |
10132 | ||
10133 | case OP_VAR_VALUE: | |
10134 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10135 | |
65d79d4b | 10136 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10137 | possible that a buggy compiler could mark a variable as |
10138 | constant even when it is not, and TYPE_CONST would return | |
10139 | true in this case, while SYMBOL_CLASS wouldn't. | |
10140 | ||
10141 | We also have to check for function symbols because they | |
10142 | are always constant. */ | |
65d79d4b SDJ |
10143 | { |
10144 | struct symbol *s = exp->elts[i + 2].symbol; | |
10145 | ||
10146 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10147 | && SYMBOL_CLASS (s) != LOC_CONST | |
10148 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
dab72643 | 10149 | return false; |
65d79d4b SDJ |
10150 | break; |
10151 | } | |
10152 | ||
10153 | /* The default action is to return 0 because we are using | |
10154 | the optimistic approach here: If we don't know something, | |
10155 | then it is not a constant. */ | |
10156 | default: | |
dab72643 | 10157 | return false; |
65d79d4b SDJ |
10158 | } |
10159 | } | |
10160 | ||
dab72643 | 10161 | return true; |
65d79d4b SDJ |
10162 | } |
10163 | ||
c1fc2657 | 10164 | /* Watchpoint destructor. */ |
3a5c3e22 | 10165 | |
c1fc2657 | 10166 | watchpoint::~watchpoint () |
3a5c3e22 | 10167 | { |
c1fc2657 SM |
10168 | xfree (this->exp_string); |
10169 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10170 | } |
10171 | ||
348d480f PA |
10172 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10173 | ||
10174 | static void | |
10175 | re_set_watchpoint (struct breakpoint *b) | |
10176 | { | |
3a5c3e22 PA |
10177 | struct watchpoint *w = (struct watchpoint *) b; |
10178 | ||
348d480f PA |
10179 | /* Watchpoint can be either on expression using entirely global |
10180 | variables, or it can be on local variables. | |
10181 | ||
10182 | Watchpoints of the first kind are never auto-deleted, and even | |
10183 | persist across program restarts. Since they can use variables | |
10184 | from shared libraries, we need to reparse expression as libraries | |
10185 | are loaded and unloaded. | |
10186 | ||
10187 | Watchpoints on local variables can also change meaning as result | |
10188 | of solib event. For example, if a watchpoint uses both a local | |
10189 | and a global variables in expression, it's a local watchpoint, | |
10190 | but unloading of a shared library will make the expression | |
10191 | invalid. This is not a very common use case, but we still | |
10192 | re-evaluate expression, to avoid surprises to the user. | |
10193 | ||
10194 | Note that for local watchpoints, we re-evaluate it only if | |
10195 | watchpoints frame id is still valid. If it's not, it means the | |
10196 | watchpoint is out of scope and will be deleted soon. In fact, | |
10197 | I'm not sure we'll ever be called in this case. | |
10198 | ||
10199 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10200 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10201 | |
3a5c3e22 PA |
10202 | Don't do anything about disabled watchpoints, since they will be |
10203 | reevaluated again when enabled. */ | |
10204 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10205 | } |
10206 | ||
77b06cd7 TJB |
10207 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10208 | ||
10209 | static int | |
10210 | insert_watchpoint (struct bp_location *bl) | |
10211 | { | |
3a5c3e22 PA |
10212 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10213 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10214 | |
10215 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10216 | w->cond_exp.get ()); |
77b06cd7 TJB |
10217 | } |
10218 | ||
10219 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10220 | ||
10221 | static int | |
73971819 | 10222 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10223 | { |
3a5c3e22 PA |
10224 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10225 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10226 | |
10227 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10228 | w->cond_exp.get ()); |
e09342b5 TJB |
10229 | } |
10230 | ||
e09342b5 | 10231 | static int |
348d480f | 10232 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10233 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10234 | const struct target_waitstatus *ws) |
e09342b5 | 10235 | { |
348d480f | 10236 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10237 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10238 | |
348d480f PA |
10239 | /* Continuable hardware watchpoints are treated as non-existent if the |
10240 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10241 | some data address). Otherwise gdb won't stop on a break instruction | |
10242 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10243 | been defined. Also skip watchpoints which we know did not trigger | |
10244 | (did not match the data address). */ | |
10245 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10246 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10247 | return 0; |
9c06b0b4 | 10248 | |
348d480f | 10249 | return 1; |
9c06b0b4 TJB |
10250 | } |
10251 | ||
348d480f PA |
10252 | static void |
10253 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10254 | { |
348d480f | 10255 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10256 | |
348d480f | 10257 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10258 | } |
10259 | ||
10260 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10261 | hardware watchpoints. */ |
9c06b0b4 TJB |
10262 | |
10263 | static int | |
348d480f | 10264 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10265 | { |
3a5c3e22 PA |
10266 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10267 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10268 | |
10269 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10270 | } |
10271 | ||
10272 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10273 | hardware watchpoints. */ |
9c06b0b4 TJB |
10274 | |
10275 | static int | |
348d480f | 10276 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10277 | { |
efa80663 PA |
10278 | /* Read and access watchpoints only work with hardware support. */ |
10279 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10280 | } |
10281 | ||
9c06b0b4 | 10282 | static enum print_stop_action |
348d480f | 10283 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10284 | { |
348d480f | 10285 | struct breakpoint *b; |
348d480f | 10286 | enum print_stop_action result; |
3a5c3e22 | 10287 | struct watchpoint *w; |
79a45e25 | 10288 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10289 | |
10290 | gdb_assert (bs->bp_location_at != NULL); | |
10291 | ||
348d480f | 10292 | b = bs->breakpoint_at; |
3a5c3e22 | 10293 | w = (struct watchpoint *) b; |
348d480f | 10294 | |
f303dbd6 PA |
10295 | annotate_watchpoint (b->number); |
10296 | maybe_print_thread_hit_breakpoint (uiout); | |
10297 | ||
d7e74731 PA |
10298 | string_file stb; |
10299 | ||
76f9c9cf | 10300 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10301 | switch (b->type) |
10302 | { | |
348d480f | 10303 | case bp_watchpoint: |
9c06b0b4 | 10304 | case bp_hardware_watchpoint: |
112e8700 SM |
10305 | if (uiout->is_mi_like_p ()) |
10306 | uiout->field_string | |
10307 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10308 | mention (b); |
76f9c9cf | 10309 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10310 | uiout->text ("\nOld value = "); |
850645cf | 10311 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10312 | uiout->field_stream ("old", stb); |
10313 | uiout->text ("\nNew value = "); | |
850645cf | 10314 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10315 | uiout->field_stream ("new", stb); |
10316 | uiout->text ("\n"); | |
348d480f PA |
10317 | /* More than one watchpoint may have been triggered. */ |
10318 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10319 | break; |
10320 | ||
10321 | case bp_read_watchpoint: | |
112e8700 SM |
10322 | if (uiout->is_mi_like_p ()) |
10323 | uiout->field_string | |
10324 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10325 | mention (b); |
76f9c9cf | 10326 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10327 | uiout->text ("\nValue = "); |
850645cf | 10328 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10329 | uiout->field_stream ("value", stb); |
10330 | uiout->text ("\n"); | |
348d480f | 10331 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10332 | break; |
10333 | ||
10334 | case bp_access_watchpoint: | |
348d480f PA |
10335 | if (bs->old_val != NULL) |
10336 | { | |
112e8700 SM |
10337 | if (uiout->is_mi_like_p ()) |
10338 | uiout->field_string | |
10339 | ("reason", | |
348d480f PA |
10340 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10341 | mention (b); | |
76f9c9cf | 10342 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10343 | uiout->text ("\nOld value = "); |
850645cf | 10344 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10345 | uiout->field_stream ("old", stb); |
10346 | uiout->text ("\nNew value = "); | |
348d480f PA |
10347 | } |
10348 | else | |
10349 | { | |
10350 | mention (b); | |
112e8700 SM |
10351 | if (uiout->is_mi_like_p ()) |
10352 | uiout->field_string | |
10353 | ("reason", | |
348d480f | 10354 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10355 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10356 | uiout->text ("\nValue = "); |
348d480f | 10357 | } |
850645cf | 10358 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10359 | uiout->field_stream ("new", stb); |
10360 | uiout->text ("\n"); | |
348d480f | 10361 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10362 | break; |
10363 | default: | |
348d480f | 10364 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10365 | } |
10366 | ||
348d480f PA |
10367 | return result; |
10368 | } | |
10369 | ||
10370 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10371 | watchpoints. */ | |
10372 | ||
10373 | static void | |
10374 | print_mention_watchpoint (struct breakpoint *b) | |
10375 | { | |
3a5c3e22 | 10376 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10377 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10378 | const char *tuple_name; |
348d480f PA |
10379 | |
10380 | switch (b->type) | |
10381 | { | |
10382 | case bp_watchpoint: | |
112e8700 | 10383 | uiout->text ("Watchpoint "); |
46b9c129 | 10384 | tuple_name = "wpt"; |
348d480f PA |
10385 | break; |
10386 | case bp_hardware_watchpoint: | |
112e8700 | 10387 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10388 | tuple_name = "wpt"; |
348d480f PA |
10389 | break; |
10390 | case bp_read_watchpoint: | |
112e8700 | 10391 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10392 | tuple_name = "hw-rwpt"; |
348d480f PA |
10393 | break; |
10394 | case bp_access_watchpoint: | |
112e8700 | 10395 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10396 | tuple_name = "hw-awpt"; |
348d480f PA |
10397 | break; |
10398 | default: | |
10399 | internal_error (__FILE__, __LINE__, | |
10400 | _("Invalid hardware watchpoint type.")); | |
10401 | } | |
10402 | ||
46b9c129 | 10403 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10404 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10405 | uiout->text (": "); |
10406 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10407 | } |
10408 | ||
10409 | /* Implement the "print_recreate" breakpoint_ops method for | |
10410 | watchpoints. */ | |
10411 | ||
10412 | static void | |
10413 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10414 | { | |
3a5c3e22 PA |
10415 | struct watchpoint *w = (struct watchpoint *) b; |
10416 | ||
348d480f PA |
10417 | switch (b->type) |
10418 | { | |
10419 | case bp_watchpoint: | |
10420 | case bp_hardware_watchpoint: | |
10421 | fprintf_unfiltered (fp, "watch"); | |
10422 | break; | |
10423 | case bp_read_watchpoint: | |
10424 | fprintf_unfiltered (fp, "rwatch"); | |
10425 | break; | |
10426 | case bp_access_watchpoint: | |
10427 | fprintf_unfiltered (fp, "awatch"); | |
10428 | break; | |
10429 | default: | |
10430 | internal_error (__FILE__, __LINE__, | |
10431 | _("Invalid watchpoint type.")); | |
10432 | } | |
10433 | ||
3a5c3e22 | 10434 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10435 | print_recreate_thread (b, fp); |
348d480f PA |
10436 | } |
10437 | ||
427cd150 TT |
10438 | /* Implement the "explains_signal" breakpoint_ops method for |
10439 | watchpoints. */ | |
10440 | ||
47591c29 | 10441 | static int |
427cd150 TT |
10442 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10443 | { | |
10444 | /* A software watchpoint cannot cause a signal other than | |
10445 | GDB_SIGNAL_TRAP. */ | |
10446 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10447 | return 0; |
427cd150 | 10448 | |
47591c29 | 10449 | return 1; |
427cd150 TT |
10450 | } |
10451 | ||
348d480f PA |
10452 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10453 | ||
2060206e | 10454 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10455 | |
10456 | /* Implement the "insert" breakpoint_ops method for | |
10457 | masked hardware watchpoints. */ | |
10458 | ||
10459 | static int | |
10460 | insert_masked_watchpoint (struct bp_location *bl) | |
10461 | { | |
3a5c3e22 PA |
10462 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10463 | ||
10464 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10465 | bl->watchpoint_type); |
10466 | } | |
10467 | ||
10468 | /* Implement the "remove" breakpoint_ops method for | |
10469 | masked hardware watchpoints. */ | |
10470 | ||
10471 | static int | |
73971819 | 10472 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10473 | { |
3a5c3e22 PA |
10474 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10475 | ||
10476 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
dda83cd7 | 10477 | bl->watchpoint_type); |
348d480f PA |
10478 | } |
10479 | ||
10480 | /* Implement the "resources_needed" breakpoint_ops method for | |
10481 | masked hardware watchpoints. */ | |
10482 | ||
10483 | static int | |
10484 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10485 | { | |
3a5c3e22 PA |
10486 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10487 | ||
10488 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10489 | } |
10490 | ||
10491 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10492 | masked hardware watchpoints. */ | |
10493 | ||
10494 | static int | |
10495 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10496 | { | |
10497 | return 0; | |
10498 | } | |
10499 | ||
10500 | /* Implement the "print_it" breakpoint_ops method for | |
10501 | masked hardware watchpoints. */ | |
10502 | ||
10503 | static enum print_stop_action | |
10504 | print_it_masked_watchpoint (bpstat bs) | |
10505 | { | |
10506 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10507 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10508 | |
10509 | /* Masked watchpoints have only one location. */ | |
10510 | gdb_assert (b->loc && b->loc->next == NULL); | |
10511 | ||
f303dbd6 PA |
10512 | annotate_watchpoint (b->number); |
10513 | maybe_print_thread_hit_breakpoint (uiout); | |
10514 | ||
348d480f PA |
10515 | switch (b->type) |
10516 | { | |
10517 | case bp_hardware_watchpoint: | |
112e8700 SM |
10518 | if (uiout->is_mi_like_p ()) |
10519 | uiout->field_string | |
10520 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10521 | break; |
10522 | ||
10523 | case bp_read_watchpoint: | |
112e8700 SM |
10524 | if (uiout->is_mi_like_p ()) |
10525 | uiout->field_string | |
10526 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10527 | break; |
10528 | ||
10529 | case bp_access_watchpoint: | |
112e8700 SM |
10530 | if (uiout->is_mi_like_p ()) |
10531 | uiout->field_string | |
10532 | ("reason", | |
348d480f PA |
10533 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10534 | break; | |
10535 | default: | |
10536 | internal_error (__FILE__, __LINE__, | |
10537 | _("Invalid hardware watchpoint type.")); | |
10538 | } | |
10539 | ||
10540 | mention (b); | |
112e8700 | 10541 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10542 | Check the underlying instruction at PC for the memory\n\ |
10543 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10544 | uiout->text ("\n"); |
9c06b0b4 TJB |
10545 | |
10546 | /* More than one watchpoint may have been triggered. */ | |
10547 | return PRINT_UNKNOWN; | |
10548 | } | |
10549 | ||
10550 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10551 | masked hardware watchpoints. */ | |
10552 | ||
10553 | static void | |
10554 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10555 | struct ui_out *uiout) | |
10556 | { | |
3a5c3e22 PA |
10557 | struct watchpoint *w = (struct watchpoint *) b; |
10558 | ||
9c06b0b4 TJB |
10559 | /* Masked watchpoints have only one location. */ |
10560 | gdb_assert (b->loc && b->loc->next == NULL); | |
10561 | ||
112e8700 SM |
10562 | uiout->text ("\tmask "); |
10563 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10564 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10565 | } |
10566 | ||
10567 | /* Implement the "print_mention" breakpoint_ops method for | |
10568 | masked hardware watchpoints. */ | |
10569 | ||
10570 | static void | |
10571 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10572 | { | |
3a5c3e22 | 10573 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10574 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10575 | const char *tuple_name; |
9c06b0b4 TJB |
10576 | |
10577 | switch (b->type) | |
10578 | { | |
10579 | case bp_hardware_watchpoint: | |
112e8700 | 10580 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10581 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10582 | break; |
10583 | case bp_read_watchpoint: | |
112e8700 | 10584 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10585 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10586 | break; |
10587 | case bp_access_watchpoint: | |
112e8700 | 10588 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10589 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10590 | break; |
10591 | default: | |
10592 | internal_error (__FILE__, __LINE__, | |
10593 | _("Invalid hardware watchpoint type.")); | |
10594 | } | |
10595 | ||
46b9c129 | 10596 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10597 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10598 | uiout->text (": "); |
10599 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10600 | } |
10601 | ||
10602 | /* Implement the "print_recreate" breakpoint_ops method for | |
10603 | masked hardware watchpoints. */ | |
10604 | ||
10605 | static void | |
10606 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10607 | { | |
3a5c3e22 | 10608 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10609 | |
10610 | switch (b->type) | |
10611 | { | |
10612 | case bp_hardware_watchpoint: | |
10613 | fprintf_unfiltered (fp, "watch"); | |
10614 | break; | |
10615 | case bp_read_watchpoint: | |
10616 | fprintf_unfiltered (fp, "rwatch"); | |
10617 | break; | |
10618 | case bp_access_watchpoint: | |
10619 | fprintf_unfiltered (fp, "awatch"); | |
10620 | break; | |
10621 | default: | |
10622 | internal_error (__FILE__, __LINE__, | |
10623 | _("Invalid hardware watchpoint type.")); | |
10624 | } | |
10625 | ||
53807e9f TT |
10626 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, |
10627 | phex (w->hw_wp_mask, sizeof (CORE_ADDR))); | |
d9b3f62e | 10628 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10629 | } |
10630 | ||
10631 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10632 | ||
2060206e | 10633 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10634 | |
10635 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10636 | ||
f2478a7e | 10637 | static bool |
9c06b0b4 TJB |
10638 | is_masked_watchpoint (const struct breakpoint *b) |
10639 | { | |
10640 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10641 | } | |
10642 | ||
53a5351d | 10643 | /* accessflag: hw_write: watch write, |
dda83cd7 | 10644 | hw_read: watch read, |
53a5351d | 10645 | hw_access: watch access (read or write) */ |
c906108c | 10646 | static void |
bbc13ae3 | 10647 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
2e362716 | 10648 | bool just_location, bool internal) |
c906108c | 10649 | { |
c1fc2657 | 10650 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10651 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10652 | struct value *result; |
bb9d5f81 | 10653 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10654 | const char *exp_start = NULL; |
10655 | const char *exp_end = NULL; | |
10656 | const char *tok, *end_tok; | |
9c06b0b4 | 10657 | int toklen = -1; |
bbc13ae3 KS |
10658 | const char *cond_start = NULL; |
10659 | const char *cond_end = NULL; | |
c906108c | 10660 | enum bptype bp_type; |
37e4754d | 10661 | int thread = -1; |
0cf6dd15 | 10662 | int pc = 0; |
9c06b0b4 TJB |
10663 | /* Flag to indicate whether we are going to use masks for |
10664 | the hardware watchpoint. */ | |
2e362716 | 10665 | bool use_mask = false; |
9c06b0b4 | 10666 | CORE_ADDR mask = 0; |
c906108c | 10667 | |
37e4754d LM |
10668 | /* Make sure that we actually have parameters to parse. */ |
10669 | if (arg != NULL && arg[0] != '\0') | |
10670 | { | |
bbc13ae3 KS |
10671 | const char *value_start; |
10672 | ||
10673 | exp_end = arg + strlen (arg); | |
37e4754d | 10674 | |
9c06b0b4 TJB |
10675 | /* Look for "parameter value" pairs at the end |
10676 | of the arguments string. */ | |
bbc13ae3 | 10677 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10678 | { |
10679 | /* Skip whitespace at the end of the argument list. */ | |
10680 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10681 | tok--; | |
10682 | ||
10683 | /* Find the beginning of the last token. | |
10684 | This is the value of the parameter. */ | |
10685 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10686 | tok--; | |
10687 | value_start = tok + 1; | |
10688 | ||
10689 | /* Skip whitespace. */ | |
10690 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10691 | tok--; | |
10692 | ||
10693 | end_tok = tok; | |
10694 | ||
10695 | /* Find the beginning of the second to last token. | |
10696 | This is the parameter itself. */ | |
10697 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10698 | tok--; | |
10699 | tok++; | |
10700 | toklen = end_tok - tok + 1; | |
10701 | ||
61012eef | 10702 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10703 | { |
5d5658a1 | 10704 | struct thread_info *thr; |
9c06b0b4 TJB |
10705 | /* At this point we've found a "thread" token, which means |
10706 | the user is trying to set a watchpoint that triggers | |
10707 | only in a specific thread. */ | |
5d5658a1 | 10708 | const char *endp; |
37e4754d | 10709 | |
9c06b0b4 TJB |
10710 | if (thread != -1) |
10711 | error(_("You can specify only one thread.")); | |
37e4754d | 10712 | |
9c06b0b4 | 10713 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10714 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10715 | |
5d5658a1 | 10716 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10717 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10718 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10719 | |
5d5658a1 | 10720 | thread = thr->global_num; |
9c06b0b4 | 10721 | } |
61012eef | 10722 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10723 | { |
10724 | /* We've found a "mask" token, which means the user wants to | |
10725 | create a hardware watchpoint that is going to have the mask | |
10726 | facility. */ | |
10727 | struct value *mask_value, *mark; | |
37e4754d | 10728 | |
9c06b0b4 TJB |
10729 | if (use_mask) |
10730 | error(_("You can specify only one mask.")); | |
37e4754d | 10731 | |
2e362716 | 10732 | use_mask = just_location = true; |
37e4754d | 10733 | |
9c06b0b4 TJB |
10734 | mark = value_mark (); |
10735 | mask_value = parse_to_comma_and_eval (&value_start); | |
10736 | mask = value_as_address (mask_value); | |
10737 | value_free_to_mark (mark); | |
10738 | } | |
10739 | else | |
10740 | /* We didn't recognize what we found. We should stop here. */ | |
10741 | break; | |
37e4754d | 10742 | |
9c06b0b4 TJB |
10743 | /* Truncate the string and get rid of the "parameter value" pair before |
10744 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10745 | exp_end = tok; |
9c06b0b4 | 10746 | } |
37e4754d | 10747 | } |
bbc13ae3 KS |
10748 | else |
10749 | exp_end = arg; | |
37e4754d | 10750 | |
bbc13ae3 KS |
10751 | /* Parse the rest of the arguments. From here on out, everything |
10752 | is in terms of a newly allocated string instead of the original | |
10753 | ARG. */ | |
81b1e71c TT |
10754 | std::string expression (arg, exp_end - arg); |
10755 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10756 | innermost_block_tracker tracker; |
10757 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10758 | exp_end = arg; |
fa8a61dc TT |
10759 | /* Remove trailing whitespace from the expression before saving it. |
10760 | This makes the eventual display of the expression string a bit | |
10761 | prettier. */ | |
10762 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10763 | --exp_end; | |
10764 | ||
65d79d4b | 10765 | /* Checking if the expression is not constant. */ |
4d01a485 | 10766 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10767 | { |
10768 | int len; | |
10769 | ||
10770 | len = exp_end - exp_start; | |
10771 | while (len > 0 && isspace (exp_start[len - 1])) | |
10772 | len--; | |
10773 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10774 | } | |
10775 | ||
699bd4cf | 10776 | exp_valid_block = tracker.block (); |
b926417a | 10777 | struct value *mark = value_mark (); |
850645cf TT |
10778 | struct value *val_as_value = nullptr; |
10779 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10780 | just_location); | |
06a64a0b | 10781 | |
850645cf | 10782 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10783 | { |
850645cf TT |
10784 | saved_bitpos = value_bitpos (val_as_value); |
10785 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10786 | } |
10787 | ||
850645cf | 10788 | value_ref_ptr val; |
06a64a0b TT |
10789 | if (just_location) |
10790 | { | |
9c06b0b4 TJB |
10791 | int ret; |
10792 | ||
06a64a0b | 10793 | exp_valid_block = NULL; |
850645cf | 10794 | val = release_value (value_addr (result)); |
06a64a0b | 10795 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10796 | |
10797 | if (use_mask) | |
10798 | { | |
850645cf | 10799 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10800 | mask); |
10801 | if (ret == -1) | |
10802 | error (_("This target does not support masked watchpoints.")); | |
10803 | else if (ret == -2) | |
10804 | error (_("Invalid mask or memory region.")); | |
10805 | } | |
06a64a0b | 10806 | } |
850645cf TT |
10807 | else if (val_as_value != NULL) |
10808 | val = release_value (val_as_value); | |
c906108c | 10809 | |
f1735a53 TT |
10810 | tok = skip_spaces (arg); |
10811 | end_tok = skip_to_space (tok); | |
c906108c SS |
10812 | |
10813 | toklen = end_tok - tok; | |
10814 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10815 | { | |
10816 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10817 | innermost_block_tracker if_tracker; |
10818 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10819 | |
10820 | /* The watchpoint expression may not be local, but the condition | |
10821 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10822 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10823 | |
c906108c SS |
10824 | cond_end = tok; |
10825 | } | |
10826 | if (*tok) | |
8a3fe4f8 | 10827 | error (_("Junk at end of command.")); |
c906108c | 10828 | |
441d7c93 PA |
10829 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10830 | ||
10831 | /* Save this because create_internal_breakpoint below invalidates | |
10832 | 'wp_frame'. */ | |
10833 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10834 | |
10835 | /* If the expression is "local", then set up a "watchpoint scope" | |
10836 | breakpoint at the point where we've left the scope of the watchpoint | |
10837 | expression. Create the scope breakpoint before the watchpoint, so | |
10838 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10839 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10840 | { |
441d7c93 PA |
10841 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10842 | ||
10843 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10844 | { |
441d7c93 PA |
10845 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10846 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10847 | ||
edb3359d | 10848 | scope_breakpoint |
441d7c93 | 10849 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10850 | bp_watchpoint_scope, |
10851 | &momentary_breakpoint_ops); | |
d983da9c | 10852 | |
441d7c93 PA |
10853 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10854 | wp_frame = NULL; | |
10855 | ||
edb3359d | 10856 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10857 | |
edb3359d DJ |
10858 | /* Automatically delete the breakpoint when it hits. */ |
10859 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10860 | |
edb3359d | 10861 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10862 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10863 | |
edb3359d | 10864 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10865 | scope_breakpoint->loc->gdbarch = caller_arch; |
10866 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10867 | scope_breakpoint->loc->address |
a6d9a66e UW |
10868 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10869 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10870 | scope_breakpoint->type); |
10871 | } | |
d983da9c DJ |
10872 | } |
10873 | ||
e8369a73 AB |
10874 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10875 | watchpoints here even if hardware watchpoints are turned off, a call | |
10876 | to update_watchpoint later in this function will cause the type to | |
10877 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10878 | ||
10879 | if (accessflag == hw_read) | |
10880 | bp_type = bp_read_watchpoint; | |
10881 | else if (accessflag == hw_access) | |
10882 | bp_type = bp_access_watchpoint; | |
10883 | else | |
10884 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10885 | |
b270e6f9 | 10886 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10887 | |
348d480f | 10888 | if (use_mask) |
b270e6f9 | 10889 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10890 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10891 | else |
b270e6f9 | 10892 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10893 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10894 | w->thread = thread; |
10895 | w->disposition = disp_donttouch; | |
10896 | w->pspace = current_program_space; | |
b22e99fd | 10897 | w->exp = std::move (exp); |
3a5c3e22 PA |
10898 | w->exp_valid_block = exp_valid_block; |
10899 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10900 | if (just_location) |
10901 | { | |
850645cf TT |
10902 | struct type *t = value_type (val.get ()); |
10903 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10904 | |
43cc5389 | 10905 | w->exp_string_reparse |
f16a9f57 | 10906 | = current_language->watch_location_expression (t, addr).release (); |
06a64a0b | 10907 | |
3a5c3e22 | 10908 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10909 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10910 | } |
10911 | else | |
3a5c3e22 | 10912 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10913 | |
10914 | if (use_mask) | |
10915 | { | |
3a5c3e22 | 10916 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10917 | } |
10918 | else | |
10919 | { | |
3a5c3e22 | 10920 | w->val = val; |
bb9d5f81 PP |
10921 | w->val_bitpos = saved_bitpos; |
10922 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10923 | w->val_valid = true; |
9c06b0b4 | 10924 | } |
77b06cd7 | 10925 | |
c906108c | 10926 | if (cond_start) |
c1fc2657 | 10927 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10928 | else |
c1fc2657 | 10929 | w->cond_string = 0; |
c5aa993b | 10930 | |
441d7c93 | 10931 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10932 | { |
441d7c93 | 10933 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10934 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10935 | } |
c906108c | 10936 | else |
f6bc2008 | 10937 | { |
3a5c3e22 PA |
10938 | w->watchpoint_frame = null_frame_id; |
10939 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10940 | } |
c906108c | 10941 | |
d983da9c | 10942 | if (scope_breakpoint != NULL) |
c906108c | 10943 | { |
d983da9c DJ |
10944 | /* The scope breakpoint is related to the watchpoint. We will |
10945 | need to act on them together. */ | |
c1fc2657 | 10946 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10947 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10948 | } |
d983da9c | 10949 | |
06a64a0b TT |
10950 | if (!just_location) |
10951 | value_free_to_mark (mark); | |
2d134ed3 | 10952 | |
b270e6f9 TT |
10953 | /* Finally update the new watchpoint. This creates the locations |
10954 | that should be inserted. */ | |
10955 | update_watchpoint (w.get (), 1); | |
a9634178 | 10956 | |
b270e6f9 | 10957 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10958 | } |
10959 | ||
e09342b5 | 10960 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10961 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10962 | |
c906108c | 10963 | static int |
a6535de1 | 10964 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10965 | { |
10966 | int found_memory_cnt = 0; | |
10967 | ||
10968 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10969 | if (!can_use_hw_watchpoints) |
c906108c | 10970 | return 0; |
c5aa993b | 10971 | |
a6535de1 TT |
10972 | gdb_assert (!vals.empty ()); |
10973 | struct value *head = vals[0].get (); | |
10974 | ||
5c44784c JM |
10975 | /* Make sure that the value of the expression depends only upon |
10976 | memory contents, and values computed from them within GDB. If we | |
10977 | find any register references or function calls, we can't use a | |
10978 | hardware watchpoint. | |
10979 | ||
10980 | The idea here is that evaluating an expression generates a series | |
10981 | of values, one holding the value of every subexpression. (The | |
10982 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10983 | a*b+c.) GDB's values hold almost enough information to establish | |
10984 | the criteria given above --- they identify memory lvalues, | |
10985 | register lvalues, computed values, etcetera. So we can evaluate | |
10986 | the expression, and then scan the chain of values that leaves | |
10987 | behind to decide whether we can detect any possible change to the | |
10988 | expression's final value using only hardware watchpoints. | |
10989 | ||
10990 | However, I don't think that the values returned by inferior | |
10991 | function calls are special in any way. So this function may not | |
10992 | notice that an expression involving an inferior function call | |
10993 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10994 | for (const value_ref_ptr &iter : vals) |
c906108c | 10995 | { |
a6535de1 TT |
10996 | struct value *v = iter.get (); |
10997 | ||
5c44784c | 10998 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10999 | { |
8464be76 DJ |
11000 | if (v != head && value_lazy (v)) |
11001 | /* A lazy memory lvalue in the chain is one that GDB never | |
11002 | needed to fetch; we either just used its address (e.g., | |
11003 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11004 | in `a,b'). This doesn't apply to HEAD; if that is | |
11005 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11006 | ; |
53a5351d | 11007 | else |
5c44784c JM |
11008 | { |
11009 | /* Ahh, memory we actually used! Check if we can cover | |
dda83cd7 | 11010 | it with hardware watchpoints. */ |
df407dfe | 11011 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11012 | |
11013 | /* We only watch structs and arrays if user asked for it | |
11014 | explicitly, never if they just happen to appear in a | |
11015 | middle of some value chain. */ | |
11016 | if (v == head | |
78134374 SM |
11017 | || (vtype->code () != TYPE_CODE_STRUCT |
11018 | && vtype->code () != TYPE_CODE_ARRAY)) | |
2e70b7b9 | 11019 | { |
42ae5230 | 11020 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11021 | int len; |
11022 | int num_regs; | |
11023 | ||
a9634178 | 11024 | len = (target_exact_watchpoints |
e09342b5 TJB |
11025 | && is_scalar_type_recursive (vtype))? |
11026 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11027 | |
e09342b5 TJB |
11028 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11029 | if (!num_regs) | |
2e70b7b9 MS |
11030 | return 0; |
11031 | else | |
e09342b5 | 11032 | found_memory_cnt += num_regs; |
2e70b7b9 | 11033 | } |
5c44784c | 11034 | } |
c5aa993b | 11035 | } |
5086187c AC |
11036 | else if (VALUE_LVAL (v) != not_lval |
11037 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11038 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11039 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11040 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11041 | } |
11042 | ||
11043 | /* The expression itself looks suitable for using a hardware | |
11044 | watchpoint, but give the target machine a chance to reject it. */ | |
11045 | return found_memory_cnt; | |
11046 | } | |
11047 | ||
8b93c638 | 11048 | void |
2e362716 | 11049 | watch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 11050 | { |
84f4c1fe | 11051 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11052 | } |
11053 | ||
a15a5258 AB |
11054 | /* Options for the watch, awatch, and rwatch commands. */ |
11055 | ||
11056 | struct watch_options | |
11057 | { | |
11058 | /* For -location. */ | |
11059 | bool location = false; | |
11060 | }; | |
11061 | ||
11062 | /* Definitions of options for the "watch", "awatch", and "rwatch" commands. | |
11063 | ||
11064 | Historically GDB always accepted both '-location' and '-l' flags for | |
11065 | these commands (both flags being synonyms). When converting to the | |
11066 | newer option scheme only '-location' is added here. That's fine (for | |
11067 | backward compatibility) as any non-ambiguous prefix of a flag will be | |
11068 | accepted, so '-l', '-loc', are now all accepted. | |
11069 | ||
11070 | What this means is that, if in the future, we add any new flag here | |
11071 | that starts with '-l' then this will break backward compatibility, so | |
11072 | please, don't do that! */ | |
11073 | ||
11074 | static const gdb::option::option_def watch_option_defs[] = { | |
11075 | gdb::option::flag_option_def<watch_options> { | |
11076 | "location", | |
11077 | [] (watch_options *opt) { return &opt->location; }, | |
11078 | N_("\ | |
11079 | This evaluates EXPRESSION and watches the memory to which is refers.\n\ | |
11080 | -l can be used as a short form of -location."), | |
11081 | }, | |
11082 | }; | |
11083 | ||
11084 | /* Returns the option group used by 'watch', 'awatch', and 'rwatch' | |
11085 | commands. */ | |
11086 | ||
11087 | static gdb::option::option_def_group | |
11088 | make_watch_options_def_group (watch_options *opts) | |
11089 | { | |
11090 | return {{watch_option_defs}, opts}; | |
11091 | } | |
11092 | ||
06a64a0b TT |
11093 | /* A helper function that looks for the "-location" argument and then |
11094 | calls watch_command_1. */ | |
11095 | ||
11096 | static void | |
0b39b52e | 11097 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b | 11098 | { |
a15a5258 AB |
11099 | watch_options opts; |
11100 | auto grp = make_watch_options_def_group (&opts); | |
11101 | gdb::option::process_options | |
11102 | (&arg, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, grp); | |
11103 | if (arg != nullptr && *arg == '\0') | |
11104 | arg = nullptr; | |
11105 | ||
11106 | watch_command_1 (arg, accessflag, from_tty, opts.location, false); | |
11107 | } | |
06a64a0b | 11108 | |
a15a5258 AB |
11109 | /* Command completion for 'watch', 'awatch', and 'rwatch' commands. */ |
11110 | static void | |
11111 | watch_command_completer (struct cmd_list_element *ignore, | |
11112 | completion_tracker &tracker, | |
11113 | const char *text, const char * /*word*/) | |
11114 | { | |
11115 | const auto group = make_watch_options_def_group (nullptr); | |
11116 | if (gdb::option::complete_options | |
11117 | (tracker, &text, gdb::option::PROCESS_OPTIONS_UNKNOWN_IS_OPERAND, group)) | |
11118 | return; | |
06a64a0b | 11119 | |
a15a5258 AB |
11120 | const char *word = advance_to_expression_complete_word_point (tracker, text); |
11121 | expression_completer (ignore, tracker, text, word); | |
8b93c638 | 11122 | } |
8926118c | 11123 | |
c5aa993b | 11124 | static void |
0b39b52e | 11125 | watch_command (const char *arg, int from_tty) |
c906108c | 11126 | { |
06a64a0b | 11127 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11128 | } |
11129 | ||
8b93c638 | 11130 | void |
2e362716 | 11131 | rwatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 11132 | { |
84f4c1fe | 11133 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11134 | } |
8926118c | 11135 | |
c5aa993b | 11136 | static void |
0b39b52e | 11137 | rwatch_command (const char *arg, int from_tty) |
c906108c | 11138 | { |
06a64a0b | 11139 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11140 | } |
11141 | ||
8b93c638 | 11142 | void |
2e362716 | 11143 | awatch_command_wrapper (const char *arg, int from_tty, bool internal) |
8b93c638 | 11144 | { |
84f4c1fe | 11145 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11146 | } |
8926118c | 11147 | |
c5aa993b | 11148 | static void |
0b39b52e | 11149 | awatch_command (const char *arg, int from_tty) |
c906108c | 11150 | { |
06a64a0b | 11151 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11152 | } |
c906108c | 11153 | \f |
c5aa993b | 11154 | |
cfc31633 PA |
11155 | /* Data for the FSM that manages the until(location)/advance commands |
11156 | in infcmd.c. Here because it uses the mechanisms of | |
11157 | breakpoints. */ | |
c906108c | 11158 | |
46e3ed7f | 11159 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 11160 | { |
46e3ed7f | 11161 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
11162 | int thread; |
11163 | ||
df631783 PA |
11164 | /* The breakpoint set at the return address in the caller frame, |
11165 | plus breakpoints at all the destination locations. */ | |
11166 | std::vector<breakpoint_up> breakpoints; | |
cfc31633 | 11167 | |
46e3ed7f | 11168 | until_break_fsm (struct interp *cmd_interp, int thread, |
df631783 | 11169 | std::vector<breakpoint_up> &&breakpoints) |
46e3ed7f TT |
11170 | : thread_fsm (cmd_interp), |
11171 | thread (thread), | |
df631783 | 11172 | breakpoints (std::move (breakpoints)) |
46e3ed7f TT |
11173 | { |
11174 | } | |
cfc31633 | 11175 | |
46e3ed7f TT |
11176 | void clean_up (struct thread_info *thread) override; |
11177 | bool should_stop (struct thread_info *thread) override; | |
11178 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
11179 | }; |
11180 | ||
cfc31633 PA |
11181 | /* Implementation of the 'should_stop' FSM method for the |
11182 | until(location)/advance commands. */ | |
11183 | ||
46e3ed7f TT |
11184 | bool |
11185 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 11186 | { |
df631783 PA |
11187 | for (const breakpoint_up &bp : breakpoints) |
11188 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, | |
11189 | bp.get ()) != NULL) | |
11190 | { | |
11191 | set_finished (); | |
11192 | break; | |
11193 | } | |
cfc31633 | 11194 | |
46e3ed7f | 11195 | return true; |
cfc31633 PA |
11196 | } |
11197 | ||
11198 | /* Implementation of the 'clean_up' FSM method for the | |
11199 | until(location)/advance commands. */ | |
11200 | ||
46e3ed7f TT |
11201 | void |
11202 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 11203 | { |
cfc31633 | 11204 | /* Clean up our temporary breakpoints. */ |
df631783 | 11205 | breakpoints.clear (); |
46e3ed7f | 11206 | delete_longjmp_breakpoint (thread); |
cfc31633 PA |
11207 | } |
11208 | ||
11209 | /* Implementation of the 'async_reply_reason' FSM method for the | |
11210 | until(location)/advance commands. */ | |
11211 | ||
46e3ed7f TT |
11212 | enum async_reply_reason |
11213 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
11214 | { |
11215 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11216 | } |
11217 | ||
c906108c | 11218 | void |
f2fc3015 | 11219 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11220 | { |
8556afb4 PA |
11221 | struct frame_info *frame; |
11222 | struct gdbarch *frame_gdbarch; | |
11223 | struct frame_id stack_frame_id; | |
11224 | struct frame_id caller_frame_id; | |
186c406b TT |
11225 | int thread; |
11226 | struct thread_info *tp; | |
c906108c | 11227 | |
70509625 | 11228 | clear_proceed_status (0); |
c906108c SS |
11229 | |
11230 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11231 | this function. */ |
c5aa993b | 11232 | |
ffc2605c | 11233 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11234 | |
6c5b2ebe PA |
11235 | std::vector<symtab_and_line> sals |
11236 | = (last_displayed_sal_is_valid () | |
11237 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11238 | get_last_displayed_symtab (), | |
11239 | get_last_displayed_line ()) | |
11240 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 11241 | NULL, NULL, 0)); |
c5aa993b | 11242 | |
df631783 | 11243 | if (sals.empty ()) |
8a3fe4f8 | 11244 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11245 | |
c906108c | 11246 | if (*arg) |
8a3fe4f8 | 11247 | error (_("Junk at end of arguments.")); |
c5aa993b | 11248 | |
186c406b | 11249 | tp = inferior_thread (); |
5d5658a1 | 11250 | thread = tp->global_num; |
186c406b | 11251 | |
8556afb4 PA |
11252 | /* Note linespec handling above invalidates the frame chain. |
11253 | Installing a breakpoint also invalidates the frame chain (as it | |
11254 | may need to switch threads), so do any frame handling before | |
11255 | that. */ | |
11256 | ||
11257 | frame = get_selected_frame (NULL); | |
11258 | frame_gdbarch = get_frame_arch (frame); | |
11259 | stack_frame_id = get_stack_frame_id (frame); | |
11260 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11261 | |
ae66c1fc EZ |
11262 | /* Keep within the current frame, or in frames called by the current |
11263 | one. */ | |
edb3359d | 11264 | |
df631783 | 11265 | std::vector<breakpoint_up> breakpoints; |
5419bdae TT |
11266 | |
11267 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11268 | ||
883bc8d1 | 11269 | if (frame_id_p (caller_frame_id)) |
c906108c | 11270 | { |
883bc8d1 | 11271 | struct symtab_and_line sal2; |
cfc31633 | 11272 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11273 | |
11274 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11275 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 | 11276 | caller_gdbarch = frame_unwind_caller_arch (frame); |
df631783 PA |
11277 | |
11278 | breakpoint_up caller_breakpoint | |
11279 | = set_momentary_breakpoint (caller_gdbarch, sal2, | |
11280 | caller_frame_id, bp_until); | |
11281 | breakpoints.emplace_back (std::move (caller_breakpoint)); | |
186c406b | 11282 | |
883bc8d1 | 11283 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11284 | lj_deleter.emplace (thread); |
c906108c | 11285 | } |
c5aa993b | 11286 | |
c70a6932 JK |
11287 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11288 | frame = NULL; | |
11289 | ||
df631783 PA |
11290 | /* If the user told us to continue until a specified location, we |
11291 | don't specify a frame at which we need to stop. Otherwise, | |
11292 | specify the selected frame, because we want to stop only at the | |
11293 | very same frame. */ | |
11294 | frame_id stop_frame_id = anywhere ? null_frame_id : stack_frame_id; | |
11295 | ||
11296 | for (symtab_and_line &sal : sals) | |
11297 | { | |
11298 | resolve_sal_pc (&sal); | |
11299 | ||
11300 | breakpoint_up location_breakpoint | |
11301 | = set_momentary_breakpoint (frame_gdbarch, sal, | |
11302 | stop_frame_id, bp_until); | |
11303 | breakpoints.emplace_back (std::move (location_breakpoint)); | |
11304 | } | |
883bc8d1 | 11305 | |
46e3ed7f | 11306 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
df631783 | 11307 | std::move (breakpoints)); |
f107f563 | 11308 | |
5419bdae TT |
11309 | if (lj_deleter) |
11310 | lj_deleter->release (); | |
f107f563 | 11311 | |
cfc31633 | 11312 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11313 | } |
ae66c1fc | 11314 | |
c906108c SS |
11315 | /* This function attempts to parse an optional "if <cond>" clause |
11316 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11317 | |
c906108c SS |
11318 | Else, it returns a pointer to the condition string. (It does not |
11319 | attempt to evaluate the string against a particular block.) And, | |
11320 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11321 | if clause in the arg string. */ |
53a5351d | 11322 | |
63160a43 PA |
11323 | const char * |
11324 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11325 | { |
63160a43 | 11326 | const char *cond_string; |
c5aa993b JM |
11327 | |
11328 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11329 | return NULL; |
c5aa993b | 11330 | |
4a64f543 | 11331 | /* Skip the "if" keyword. */ |
c906108c | 11332 | (*arg) += 2; |
c5aa993b | 11333 | |
c906108c | 11334 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11335 | condition string. */ |
f1735a53 | 11336 | *arg = skip_spaces (*arg); |
c906108c | 11337 | cond_string = *arg; |
c5aa993b | 11338 | |
4a64f543 MS |
11339 | /* Assume that the condition occupies the remainder of the arg |
11340 | string. */ | |
c906108c | 11341 | (*arg) += strlen (cond_string); |
c5aa993b | 11342 | |
c906108c SS |
11343 | return cond_string; |
11344 | } | |
c5aa993b | 11345 | |
c906108c SS |
11346 | /* Commands to deal with catching events, such as signals, exceptions, |
11347 | process start/exit, etc. */ | |
c5aa993b JM |
11348 | |
11349 | typedef enum | |
11350 | { | |
44feb3ce TT |
11351 | catch_fork_temporary, catch_vfork_temporary, |
11352 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11353 | } |
11354 | catch_fork_kind; | |
11355 | ||
c906108c | 11356 | static void |
eb4c3f4a | 11357 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11358 | struct cmd_list_element *command) |
c906108c | 11359 | { |
a6d9a66e | 11360 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11361 | const char *cond_string = NULL; |
44feb3ce | 11362 | catch_fork_kind fork_kind; |
44feb3ce TT |
11363 | |
11364 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
b650a282 SM |
11365 | bool temp = (fork_kind == catch_fork_temporary |
11366 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11367 | |
44feb3ce TT |
11368 | if (!arg) |
11369 | arg = ""; | |
f1735a53 | 11370 | arg = skip_spaces (arg); |
c5aa993b | 11371 | |
c906108c | 11372 | /* The allowed syntax is: |
c5aa993b JM |
11373 | catch [v]fork |
11374 | catch [v]fork if <cond> | |
11375 | ||
4a64f543 | 11376 | First, check if there's an if clause. */ |
c906108c | 11377 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11378 | |
c906108c | 11379 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11380 | error (_("Junk at end of arguments.")); |
c5aa993b | 11381 | |
c906108c | 11382 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11383 | and enable reporting of such events. */ |
c5aa993b JM |
11384 | switch (fork_kind) |
11385 | { | |
44feb3ce TT |
11386 | case catch_fork_temporary: |
11387 | case catch_fork_permanent: | |
b650a282 | 11388 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
dda83cd7 | 11389 | &catch_fork_breakpoint_ops); |
c906108c | 11390 | break; |
44feb3ce TT |
11391 | case catch_vfork_temporary: |
11392 | case catch_vfork_permanent: | |
b650a282 | 11393 | create_fork_vfork_event_catchpoint (gdbarch, temp, cond_string, |
dda83cd7 | 11394 | &catch_vfork_breakpoint_ops); |
c906108c | 11395 | break; |
c5aa993b | 11396 | default: |
8a3fe4f8 | 11397 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11398 | break; |
c5aa993b | 11399 | } |
c906108c SS |
11400 | } |
11401 | ||
11402 | static void | |
eb4c3f4a | 11403 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11404 | struct cmd_list_element *command) |
c906108c | 11405 | { |
a6d9a66e | 11406 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11407 | const char *cond_string = NULL; |
b650a282 | 11408 | bool temp = get_cmd_context (command) == CATCH_TEMPORARY; |
44feb3ce TT |
11409 | |
11410 | if (!arg) | |
11411 | arg = ""; | |
f1735a53 | 11412 | arg = skip_spaces (arg); |
c906108c SS |
11413 | |
11414 | /* The allowed syntax is: | |
c5aa993b JM |
11415 | catch exec |
11416 | catch exec if <cond> | |
c906108c | 11417 | |
4a64f543 | 11418 | First, check if there's an if clause. */ |
c906108c SS |
11419 | cond_string = ep_parse_optional_if_clause (&arg); |
11420 | ||
11421 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11422 | error (_("Junk at end of arguments.")); |
c906108c | 11423 | |
b270e6f9 | 11424 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
b650a282 | 11425 | init_catchpoint (c.get (), gdbarch, temp, cond_string, |
b4d90040 PA |
11426 | &catch_exec_breakpoint_ops); |
11427 | c->exec_pathname = NULL; | |
11428 | ||
b270e6f9 | 11429 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11430 | } |
c5aa993b | 11431 | |
9ac4176b | 11432 | void |
28010a5d PA |
11433 | init_ada_exception_breakpoint (struct breakpoint *b, |
11434 | struct gdbarch *gdbarch, | |
11435 | struct symtab_and_line sal, | |
f2fc3015 | 11436 | const char *addr_string, |
c0a91b2b | 11437 | const struct breakpoint_ops *ops, |
28010a5d | 11438 | int tempflag, |
349774ef | 11439 | int enabled, |
28010a5d | 11440 | int from_tty) |
f7f9143b | 11441 | { |
f7f9143b JB |
11442 | if (from_tty) |
11443 | { | |
5af949e3 UW |
11444 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11445 | if (!loc_gdbarch) | |
11446 | loc_gdbarch = gdbarch; | |
11447 | ||
6c95b8df PA |
11448 | describe_other_breakpoints (loc_gdbarch, |
11449 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b | 11450 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
dda83cd7 SM |
11451 | version for exception catchpoints, because two catchpoints |
11452 | used for different exception names will use the same address. | |
11453 | In this case, a "breakpoint ... also set at..." warning is | |
11454 | unproductive. Besides, the warning phrasing is also a bit | |
11455 | inappropriate, we should use the word catchpoint, and tell | |
11456 | the user what type of catchpoint it is. The above is good | |
11457 | enough for now, though. */ | |
f7f9143b JB |
11458 | } |
11459 | ||
f06f1252 | 11460 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
f7f9143b | 11461 | |
349774ef | 11462 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11463 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11464 | b->location = string_to_event_location (&addr_string, |
11465 | language_def (language_ada)); | |
f7f9143b | 11466 | b->language = language_ada; |
f7f9143b JB |
11467 | } |
11468 | ||
c906108c SS |
11469 | \f |
11470 | ||
81b1e71c | 11471 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11472 | |
11473 | static int | |
81b1e71c | 11474 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11475 | { |
81b1e71c TT |
11476 | uintptr_t ua = (uintptr_t) a; |
11477 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11478 | |
81b1e71c | 11479 | if (a->number < b->number) |
8a2c437b | 11480 | return -1; |
81b1e71c | 11481 | else if (a->number > b->number) |
8a2c437b TT |
11482 | return 1; |
11483 | ||
11484 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11485 | the number 0. */ | |
11486 | if (ua < ub) | |
11487 | return -1; | |
94b0e70d | 11488 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11489 | } |
11490 | ||
80f8a6eb | 11491 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11492 | |
11493 | static void | |
0b39b52e | 11494 | clear_command (const char *arg, int from_tty) |
c906108c | 11495 | { |
81b1e71c | 11496 | struct breakpoint *b; |
c906108c | 11497 | int default_match; |
c906108c | 11498 | |
6c5b2ebe PA |
11499 | std::vector<symtab_and_line> decoded_sals; |
11500 | symtab_and_line last_sal; | |
11501 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11502 | if (arg) |
11503 | { | |
6c5b2ebe PA |
11504 | decoded_sals |
11505 | = decode_line_with_current_source (arg, | |
11506 | (DECODE_LINE_FUNFIRSTLINE | |
11507 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11508 | default_match = 0; |
6c5b2ebe | 11509 | sals = decoded_sals; |
c906108c SS |
11510 | } |
11511 | else | |
11512 | { | |
1bfeeb0f JL |
11513 | /* Set sal's line, symtab, pc, and pspace to the values |
11514 | corresponding to the last call to print_frame_info. If the | |
11515 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11516 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11517 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11518 | error (_("No source file specified.")); |
c906108c | 11519 | |
c906108c | 11520 | default_match = 1; |
6c5b2ebe | 11521 | sals = last_sal; |
c906108c SS |
11522 | } |
11523 | ||
4a64f543 MS |
11524 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11525 | seems, because all existing breakpoints typically have both | |
11526 | file/line and pc set. So, if clear is given file/line, we can | |
11527 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11528 | |
11529 | We only support clearing given the address explicitly | |
11530 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11531 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11532 | due to optimization, all in one block. |
4a64f543 MS |
11533 | |
11534 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11535 | PC corresponding to the same file:line, the breakpoint won't |
11536 | be cleared. We probably can still clear the breakpoint, but | |
11537 | since the other PC value is never presented to user, user | |
11538 | can only find it by guessing, and it does not seem important | |
11539 | to support that. */ | |
11540 | ||
4a64f543 MS |
11541 | /* For each line spec given, delete bps which correspond to it. Do |
11542 | it in two passes, solely to preserve the current behavior that | |
11543 | from_tty is forced true if we delete more than one | |
11544 | breakpoint. */ | |
c906108c | 11545 | |
81b1e71c | 11546 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11547 | for (const auto &sal : sals) |
c906108c | 11548 | { |
05cba821 JK |
11549 | const char *sal_fullname; |
11550 | ||
c906108c | 11551 | /* If exact pc given, clear bpts at that pc. |
dda83cd7 SM |
11552 | If line given (pc == 0), clear all bpts on specified line. |
11553 | If defaulting, clear all bpts on default line | |
11554 | or at default pc. | |
c5aa993b | 11555 | |
dda83cd7 | 11556 | defaulting sal.pc != 0 tests to do |
c5aa993b | 11557 | |
dda83cd7 SM |
11558 | 0 1 pc |
11559 | 1 1 pc _and_ line | |
11560 | 0 0 line | |
11561 | 1 0 <can't happen> */ | |
c906108c | 11562 | |
05cba821 JK |
11563 | sal_fullname = (sal.symtab == NULL |
11564 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11565 | |
4a64f543 | 11566 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11567 | ALL_BREAKPOINTS (b) |
c5aa993b | 11568 | { |
0d381245 | 11569 | int match = 0; |
4a64f543 | 11570 | /* Are we going to delete b? */ |
cc60f2e3 | 11571 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11572 | { |
11573 | struct bp_location *loc = b->loc; | |
11574 | for (; loc; loc = loc->next) | |
11575 | { | |
f8eba3c6 TT |
11576 | /* If the user specified file:line, don't allow a PC |
11577 | match. This matches historical gdb behavior. */ | |
11578 | int pc_match = (!sal.explicit_line | |
11579 | && sal.pc | |
11580 | && (loc->pspace == sal.pspace) | |
11581 | && (loc->address == sal.pc) | |
11582 | && (!section_is_overlay (loc->section) | |
11583 | || loc->section == sal.section)); | |
4aac40c8 TT |
11584 | int line_match = 0; |
11585 | ||
11586 | if ((default_match || sal.explicit_line) | |
2f202fde | 11587 | && loc->symtab != NULL |
05cba821 | 11588 | && sal_fullname != NULL |
4aac40c8 | 11589 | && sal.pspace == loc->pspace |
05cba821 JK |
11590 | && loc->line_number == sal.line |
11591 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11592 | sal_fullname) == 0) | |
11593 | line_match = 1; | |
4aac40c8 | 11594 | |
0d381245 VP |
11595 | if (pc_match || line_match) |
11596 | { | |
11597 | match = 1; | |
11598 | break; | |
11599 | } | |
11600 | } | |
11601 | } | |
11602 | ||
11603 | if (match) | |
81b1e71c | 11604 | found.push_back (b); |
c906108c | 11605 | } |
80f8a6eb | 11606 | } |
8a2c437b | 11607 | |
80f8a6eb | 11608 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11609 | if (found.empty ()) |
80f8a6eb MS |
11610 | { |
11611 | if (arg) | |
8a3fe4f8 | 11612 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11613 | else |
8a3fe4f8 | 11614 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11615 | } |
c906108c | 11616 | |
8a2c437b | 11617 | /* Remove duplicates from the vec. */ |
81b1e71c | 11618 | std::sort (found.begin (), found.end (), |
b926417a | 11619 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11620 | { |
b926417a | 11621 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11622 | }); |
11623 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11624 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11625 | { |
b926417a | 11626 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11627 | }), |
11628 | found.end ()); | |
8a2c437b | 11629 | |
81b1e71c | 11630 | if (found.size () > 1) |
4a64f543 | 11631 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11632 | if (from_tty) |
a3f17187 | 11633 | { |
81b1e71c | 11634 | if (found.size () == 1) |
a3f17187 AC |
11635 | printf_unfiltered (_("Deleted breakpoint ")); |
11636 | else | |
11637 | printf_unfiltered (_("Deleted breakpoints ")); | |
11638 | } | |
d6e956e5 | 11639 | |
81b1e71c | 11640 | for (breakpoint *iter : found) |
80f8a6eb | 11641 | { |
c5aa993b | 11642 | if (from_tty) |
81b1e71c TT |
11643 | printf_unfiltered ("%d ", iter->number); |
11644 | delete_breakpoint (iter); | |
c906108c | 11645 | } |
80f8a6eb MS |
11646 | if (from_tty) |
11647 | putchar_unfiltered ('\n'); | |
c906108c SS |
11648 | } |
11649 | \f | |
11650 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11651 | all breakpoints that are marked for deletion, whether hit or not. | |
11652 | This is called after any breakpoint is hit, or after errors. */ | |
11653 | ||
11654 | void | |
fba45db2 | 11655 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11656 | { |
35df4500 | 11657 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11658 | |
11659 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11660 | if (bs->breakpoint_at |
11661 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11662 | && bs->stop) |
f431efe5 | 11663 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11664 | |
35df4500 | 11665 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11666 | { |
b5de0fa7 | 11667 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11668 | delete_breakpoint (b); |
11669 | } | |
c906108c SS |
11670 | } |
11671 | ||
4a64f543 | 11672 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 11673 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
11674 | bl_address_is_meaningful says), secondarily by ordering first |
11675 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 11676 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
11677 | |
11678 | static int | |
39ef2f62 | 11679 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 11680 | { |
876fa593 | 11681 | if (a->address != b->address) |
39ef2f62 | 11682 | return a->address < b->address; |
876fa593 | 11683 | |
dea2aa5f LM |
11684 | /* Sort locations at the same address by their pspace number, keeping |
11685 | locations of the same inferior (in a multi-inferior environment) | |
11686 | grouped. */ | |
11687 | ||
11688 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 11689 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 11690 | |
876fa593 | 11691 | /* Sort permanent breakpoints first. */ |
1a853c52 | 11692 | if (a->permanent != b->permanent) |
39ef2f62 | 11693 | return a->permanent > b->permanent; |
876fa593 | 11694 | |
7f32a4d5 PA |
11695 | /* Sort by type in order to make duplicate determination easier. |
11696 | See update_global_location_list. This is kept in sync with | |
11697 | breakpoint_locations_match. */ | |
11698 | if (a->loc_type < b->loc_type) | |
11699 | return true; | |
11700 | ||
11701 | /* Likewise, for range-breakpoints, sort by length. */ | |
11702 | if (a->loc_type == bp_loc_hardware_breakpoint | |
11703 | && b->loc_type == bp_loc_hardware_breakpoint | |
11704 | && a->length < b->length) | |
11705 | return true; | |
11706 | ||
c56a97f9 JK |
11707 | /* Make the internal GDB representation stable across GDB runs |
11708 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11709 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11710 | |
11711 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 11712 | return a->owner->number < b->owner->number; |
876fa593 | 11713 | |
39ef2f62 | 11714 | return a < b; |
876fa593 JK |
11715 | } |
11716 | ||
f5336ca5 PA |
11717 | /* Set bp_locations_placed_address_before_address_max and |
11718 | bp_locations_shadow_len_after_address_max according to the current | |
11719 | content of the bp_locations array. */ | |
f7545552 TT |
11720 | |
11721 | static void | |
f5336ca5 | 11722 | bp_locations_target_extensions_update (void) |
f7545552 | 11723 | { |
876fa593 JK |
11724 | struct bp_location *bl, **blp_tmp; |
11725 | ||
f5336ca5 PA |
11726 | bp_locations_placed_address_before_address_max = 0; |
11727 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11728 | |
11729 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11730 | { | |
11731 | CORE_ADDR start, end, addr; | |
11732 | ||
11733 | if (!bp_location_has_shadow (bl)) | |
11734 | continue; | |
11735 | ||
11736 | start = bl->target_info.placed_address; | |
11737 | end = start + bl->target_info.shadow_len; | |
11738 | ||
11739 | gdb_assert (bl->address >= start); | |
11740 | addr = bl->address - start; | |
f5336ca5 PA |
11741 | if (addr > bp_locations_placed_address_before_address_max) |
11742 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11743 | |
11744 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11745 | ||
11746 | gdb_assert (bl->address < end); | |
11747 | addr = end - bl->address; | |
f5336ca5 PA |
11748 | if (addr > bp_locations_shadow_len_after_address_max) |
11749 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11750 | } |
f7545552 TT |
11751 | } |
11752 | ||
1e4d1764 YQ |
11753 | /* Download tracepoint locations if they haven't been. */ |
11754 | ||
11755 | static void | |
11756 | download_tracepoint_locations (void) | |
11757 | { | |
7ed2c994 | 11758 | struct breakpoint *b; |
dd2e65cc | 11759 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11760 | |
5ed8105e | 11761 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11762 | |
7ed2c994 | 11763 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11764 | { |
7ed2c994 | 11765 | struct bp_location *bl; |
1e4d1764 | 11766 | struct tracepoint *t; |
f2a8bc8a | 11767 | int bp_location_downloaded = 0; |
1e4d1764 | 11768 | |
7ed2c994 | 11769 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11770 | ? !may_insert_fast_tracepoints |
11771 | : !may_insert_tracepoints)) | |
11772 | continue; | |
11773 | ||
dd2e65cc YQ |
11774 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11775 | { | |
11776 | if (target_can_download_tracepoint ()) | |
11777 | can_download_tracepoint = TRIBOOL_TRUE; | |
11778 | else | |
11779 | can_download_tracepoint = TRIBOOL_FALSE; | |
11780 | } | |
11781 | ||
11782 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11783 | break; | |
11784 | ||
7ed2c994 YQ |
11785 | for (bl = b->loc; bl; bl = bl->next) |
11786 | { | |
11787 | /* In tracepoint, locations are _never_ duplicated, so | |
11788 | should_be_inserted is equivalent to | |
11789 | unduplicated_should_be_inserted. */ | |
11790 | if (!should_be_inserted (bl) || bl->inserted) | |
11791 | continue; | |
1e4d1764 | 11792 | |
7ed2c994 | 11793 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11794 | |
7ed2c994 | 11795 | target_download_tracepoint (bl); |
1e4d1764 | 11796 | |
7ed2c994 | 11797 | bl->inserted = 1; |
f2a8bc8a | 11798 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11799 | } |
11800 | t = (struct tracepoint *) b; | |
11801 | t->number_on_target = b->number; | |
f2a8bc8a | 11802 | if (bp_location_downloaded) |
76727919 | 11803 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11804 | } |
1e4d1764 YQ |
11805 | } |
11806 | ||
934709f0 PW |
11807 | /* Swap the insertion/duplication state between two locations. */ |
11808 | ||
11809 | static void | |
11810 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11811 | { | |
11812 | const int left_inserted = left->inserted; | |
11813 | const int left_duplicate = left->duplicate; | |
b775012e | 11814 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11815 | const struct bp_target_info left_target_info = left->target_info; |
11816 | ||
1e4d1764 YQ |
11817 | /* Locations of tracepoints can never be duplicated. */ |
11818 | if (is_tracepoint (left->owner)) | |
11819 | gdb_assert (!left->duplicate); | |
11820 | if (is_tracepoint (right->owner)) | |
11821 | gdb_assert (!right->duplicate); | |
11822 | ||
934709f0 PW |
11823 | left->inserted = right->inserted; |
11824 | left->duplicate = right->duplicate; | |
b775012e | 11825 | left->needs_update = right->needs_update; |
934709f0 PW |
11826 | left->target_info = right->target_info; |
11827 | right->inserted = left_inserted; | |
11828 | right->duplicate = left_duplicate; | |
b775012e | 11829 | right->needs_update = left_needs_update; |
934709f0 PW |
11830 | right->target_info = left_target_info; |
11831 | } | |
11832 | ||
b775012e LM |
11833 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11834 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11835 | conditions on the target's side. Such conditions need to be updated on | |
11836 | the target. */ | |
11837 | ||
11838 | static void | |
11839 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11840 | { | |
11841 | struct bp_location **locp = NULL, **loc2p; | |
11842 | struct bp_location *loc; | |
11843 | CORE_ADDR address = 0; | |
11844 | int pspace_num; | |
11845 | ||
11846 | address = bl->address; | |
11847 | pspace_num = bl->pspace->num; | |
11848 | ||
11849 | /* This is only meaningful if the target is | |
11850 | evaluating conditions and if the user has | |
11851 | opted for condition evaluation on the target's | |
11852 | side. */ | |
11853 | if (gdb_evaluates_breakpoint_condition_p () | |
11854 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11855 | return; | |
11856 | ||
11857 | /* Flag all breakpoint locations with this address and | |
11858 | the same program space as the location | |
11859 | as "its condition has changed". We need to | |
11860 | update the conditions on the target's side. */ | |
11861 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11862 | { | |
11863 | loc = *loc2p; | |
11864 | ||
11865 | if (!is_breakpoint (loc->owner) | |
11866 | || pspace_num != loc->pspace->num) | |
11867 | continue; | |
11868 | ||
11869 | /* Flag the location appropriately. We use a different state to | |
11870 | let everyone know that we already updated the set of locations | |
11871 | with addr bl->address and program space bl->pspace. This is so | |
11872 | we don't have to keep calling these functions just to mark locations | |
11873 | that have already been marked. */ | |
11874 | loc->condition_changed = condition_updated; | |
11875 | ||
11876 | /* Free the agent expression bytecode as well. We will compute | |
11877 | it later on. */ | |
833177a4 | 11878 | loc->cond_bytecode.reset (); |
b775012e LM |
11879 | } |
11880 | } | |
7f32a4d5 | 11881 | |
44702360 PA |
11882 | /* Called whether new breakpoints are created, or existing breakpoints |
11883 | deleted, to update the global location list and recompute which | |
11884 | locations are duplicate of which. | |
b775012e | 11885 | |
04086b45 PA |
11886 | The INSERT_MODE flag determines whether locations may not, may, or |
11887 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11888 | info. */ | |
b60e7edf | 11889 | |
0d381245 | 11890 | static void |
44702360 | 11891 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11892 | { |
74960c60 | 11893 | struct breakpoint *b; |
876fa593 | 11894 | struct bp_location **locp, *loc; |
b775012e LM |
11895 | /* Last breakpoint location address that was marked for update. */ |
11896 | CORE_ADDR last_addr = 0; | |
11897 | /* Last breakpoint location program space that was marked for update. */ | |
11898 | int last_pspace_num = -1; | |
f7545552 | 11899 | |
2d134ed3 PA |
11900 | /* Used in the duplicates detection below. When iterating over all |
11901 | bp_locations, points to the first bp_location of a given address. | |
11902 | Breakpoints and watchpoints of different types are never | |
11903 | duplicates of each other. Keep one pointer for each type of | |
11904 | breakpoint/watchpoint, so we only need to loop over all locations | |
11905 | once. */ | |
11906 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11907 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11908 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11909 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11910 | |
f5336ca5 PA |
11911 | /* Saved former bp_locations array which we compare against the newly |
11912 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11913 | struct bp_location **old_locp; |
f5336ca5 | 11914 | unsigned old_locations_count; |
81b1e71c | 11915 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11916 | |
f5336ca5 PA |
11917 | old_locations_count = bp_locations_count; |
11918 | bp_locations = NULL; | |
11919 | bp_locations_count = 0; | |
0d381245 | 11920 | |
74960c60 | 11921 | ALL_BREAKPOINTS (b) |
876fa593 | 11922 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11923 | bp_locations_count++; |
876fa593 | 11924 | |
f5336ca5 PA |
11925 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11926 | locp = bp_locations; | |
876fa593 JK |
11927 | ALL_BREAKPOINTS (b) |
11928 | for (loc = b->loc; loc; loc = loc->next) | |
11929 | *locp++ = loc; | |
7f32a4d5 PA |
11930 | |
11931 | /* See if we need to "upgrade" a software breakpoint to a hardware | |
11932 | breakpoint. Do this before deciding whether locations are | |
11933 | duplicates. Also do this before sorting because sorting order | |
11934 | depends on location type. */ | |
11935 | for (locp = bp_locations; | |
11936 | locp < bp_locations + bp_locations_count; | |
11937 | locp++) | |
11938 | { | |
11939 | loc = *locp; | |
11940 | if (!loc->inserted && should_be_inserted (loc)) | |
11941 | handle_automatic_hardware_breakpoints (loc); | |
11942 | } | |
11943 | ||
39ef2f62 CB |
11944 | std::sort (bp_locations, bp_locations + bp_locations_count, |
11945 | bp_location_is_less_than); | |
876fa593 | 11946 | |
f5336ca5 | 11947 | bp_locations_target_extensions_update (); |
74960c60 | 11948 | |
4a64f543 MS |
11949 | /* Identify bp_location instances that are no longer present in the |
11950 | new list, and therefore should be freed. Note that it's not | |
11951 | necessary that those locations should be removed from inferior -- | |
11952 | if there's another location at the same address (previously | |
11953 | marked as duplicate), we don't need to remove/insert the | |
11954 | location. | |
876fa593 | 11955 | |
4a64f543 MS |
11956 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11957 | and former bp_location array state respectively. */ | |
876fa593 | 11958 | |
f5336ca5 | 11959 | locp = bp_locations; |
81b1e71c TT |
11960 | for (old_locp = old_locations.get (); |
11961 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11962 | old_locp++) |
74960c60 | 11963 | { |
876fa593 | 11964 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11965 | struct bp_location **loc2p; |
876fa593 | 11966 | |
e5dd4106 | 11967 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11968 | not, we have to free it. */ |
c7d46a38 | 11969 | int found_object = 0; |
20874c92 VP |
11970 | /* Tells if the location should remain inserted in the target. */ |
11971 | int keep_in_target = 0; | |
11972 | int removed = 0; | |
876fa593 | 11973 | |
4a64f543 MS |
11974 | /* Skip LOCP entries which will definitely never be needed. |
11975 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11976 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11977 | && (*locp)->address < old_loc->address) |
876fa593 | 11978 | locp++; |
c7d46a38 PA |
11979 | |
11980 | for (loc2p = locp; | |
f5336ca5 | 11981 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11982 | && (*loc2p)->address == old_loc->address); |
11983 | loc2p++) | |
11984 | { | |
b775012e LM |
11985 | /* Check if this is a new/duplicated location or a duplicated |
11986 | location that had its condition modified. If so, we want to send | |
11987 | its condition to the target if evaluation of conditions is taking | |
11988 | place there. */ | |
11989 | if ((*loc2p)->condition_changed == condition_modified | |
11990 | && (last_addr != old_loc->address | |
11991 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11992 | { |
b775012e LM |
11993 | force_breakpoint_reinsertion (*loc2p); |
11994 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11995 | } |
b775012e LM |
11996 | |
11997 | if (*loc2p == old_loc) | |
11998 | found_object = 1; | |
c7d46a38 | 11999 | } |
74960c60 | 12000 | |
b775012e LM |
12001 | /* We have already handled this address, update it so that we don't |
12002 | have to go through updates again. */ | |
12003 | last_addr = old_loc->address; | |
12004 | ||
12005 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12006 | if (!found_object) | |
12007 | force_breakpoint_reinsertion (old_loc); | |
12008 | ||
4a64f543 MS |
12009 | /* If this location is no longer present, and inserted, look if |
12010 | there's maybe a new location at the same address. If so, | |
12011 | mark that one inserted, and don't remove this one. This is | |
12012 | needed so that we don't have a time window where a breakpoint | |
12013 | at certain location is not inserted. */ | |
74960c60 | 12014 | |
876fa593 | 12015 | if (old_loc->inserted) |
0d381245 | 12016 | { |
4a64f543 MS |
12017 | /* If the location is inserted now, we might have to remove |
12018 | it. */ | |
74960c60 | 12019 | |
876fa593 | 12020 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12021 | { |
4a64f543 MS |
12022 | /* The location is still present in the location list, |
12023 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12024 | keep_in_target = 1; |
74960c60 VP |
12025 | } |
12026 | else | |
12027 | { | |
b775012e LM |
12028 | /* This location still exists, but it won't be kept in the |
12029 | target since it may have been disabled. We proceed to | |
12030 | remove its target-side condition. */ | |
12031 | ||
4a64f543 MS |
12032 | /* The location is either no longer present, or got |
12033 | disabled. See if there's another location at the | |
12034 | same address, in which case we don't need to remove | |
12035 | this one from the target. */ | |
876fa593 | 12036 | |
2bdf28a0 | 12037 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 12038 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 12039 | { |
876fa593 | 12040 | for (loc2p = locp; |
f5336ca5 | 12041 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 12042 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
12043 | loc2p++) |
12044 | { | |
12045 | struct bp_location *loc2 = *loc2p; | |
12046 | ||
7f32a4d5 PA |
12047 | if (loc2 == old_loc) |
12048 | continue; | |
12049 | ||
2d134ed3 | 12050 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12051 | { |
85d721b8 PA |
12052 | /* Read watchpoint locations are switched to |
12053 | access watchpoints, if the former are not | |
12054 | supported, but the latter are. */ | |
12055 | if (is_hardware_watchpoint (old_loc->owner)) | |
12056 | { | |
12057 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12058 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12059 | } | |
12060 | ||
934709f0 PW |
12061 | /* loc2 is a duplicated location. We need to check |
12062 | if it should be inserted in case it will be | |
12063 | unduplicated. */ | |
7f32a4d5 | 12064 | if (unduplicated_should_be_inserted (loc2)) |
c7d46a38 | 12065 | { |
934709f0 | 12066 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12067 | keep_in_target = 1; |
12068 | break; | |
12069 | } | |
876fa593 JK |
12070 | } |
12071 | } | |
12072 | } | |
74960c60 VP |
12073 | } |
12074 | ||
20874c92 VP |
12075 | if (!keep_in_target) |
12076 | { | |
834c0d03 | 12077 | if (remove_breakpoint (old_loc)) |
20874c92 | 12078 | { |
4a64f543 MS |
12079 | /* This is just about all we can do. We could keep |
12080 | this location on the global list, and try to | |
12081 | remove it next time, but there's no particular | |
12082 | reason why we will succeed next time. | |
20874c92 | 12083 | |
4a64f543 MS |
12084 | Note that at this point, old_loc->owner is still |
12085 | valid, as delete_breakpoint frees the breakpoint | |
12086 | only after calling us. */ | |
3e43a32a MS |
12087 | printf_filtered (_("warning: Error removing " |
12088 | "breakpoint %d\n"), | |
876fa593 | 12089 | old_loc->owner->number); |
20874c92 VP |
12090 | } |
12091 | removed = 1; | |
12092 | } | |
0d381245 | 12093 | } |
74960c60 VP |
12094 | |
12095 | if (!found_object) | |
1c5cfe86 | 12096 | { |
fbea99ea | 12097 | if (removed && target_is_non_stop_p () |
1cf4d951 | 12098 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 12099 | { |
db82e815 PA |
12100 | /* This location was removed from the target. In |
12101 | non-stop mode, a race condition is possible where | |
12102 | we've removed a breakpoint, but stop events for that | |
12103 | breakpoint are already queued and will arrive later. | |
12104 | We apply an heuristic to be able to distinguish such | |
12105 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12106 | breakpoint location for a bit, and will retire it | |
12107 | after we see some number of events. The theory here | |
12108 | is that reporting of events should, "on the average", | |
12109 | be fair, so after a while we'll see events from all | |
12110 | threads that have anything of interest, and no longer | |
12111 | need to keep this breakpoint location around. We | |
12112 | don't hold locations forever so to reduce chances of | |
12113 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12114 | SIGTRAP. | |
12115 | ||
12116 | The heuristic failing can be disastrous on | |
12117 | decr_pc_after_break targets. | |
12118 | ||
12119 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12120 | if we fail to recognize a late breakpoint SIGTRAP, | |
12121 | because events_till_retirement has reached 0 too | |
12122 | soon, we'll fail to do the PC adjustment, and report | |
12123 | a random SIGTRAP to the user. When the user resumes | |
12124 | the inferior, it will most likely immediately crash | |
2dec564e | 12125 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12126 | corrupted, because of being resumed e.g., in the |
12127 | middle of a multi-byte instruction, or skipped a | |
12128 | one-byte instruction. This was actually seen happen | |
12129 | on native x86-linux, and should be less rare on | |
12130 | targets that do not support new thread events, like | |
12131 | remote, due to the heuristic depending on | |
12132 | thread_count. | |
12133 | ||
12134 | Mistaking a random SIGTRAP for a breakpoint trap | |
12135 | causes similar symptoms (PC adjustment applied when | |
12136 | it shouldn't), but then again, playing with SIGTRAPs | |
12137 | behind the debugger's back is asking for trouble. | |
12138 | ||
12139 | Since hardware watchpoint traps are always | |
12140 | distinguishable from other traps, so we don't need to | |
12141 | apply keep hardware watchpoint moribund locations | |
12142 | around. We simply always ignore hardware watchpoint | |
12143 | traps we can no longer explain. */ | |
12144 | ||
5b6d1e4f PA |
12145 | process_stratum_target *proc_target = nullptr; |
12146 | for (inferior *inf : all_inferiors ()) | |
12147 | if (inf->pspace == old_loc->pspace) | |
12148 | { | |
12149 | proc_target = inf->process_target (); | |
12150 | break; | |
12151 | } | |
12152 | if (proc_target != nullptr) | |
12153 | old_loc->events_till_retirement | |
12154 | = 3 * (thread_count (proc_target) + 1); | |
12155 | else | |
12156 | old_loc->events_till_retirement = 1; | |
876fa593 | 12157 | old_loc->owner = NULL; |
20874c92 | 12158 | |
1123588c | 12159 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
12160 | } |
12161 | else | |
f431efe5 PA |
12162 | { |
12163 | old_loc->owner = NULL; | |
12164 | decref_bp_location (&old_loc); | |
12165 | } | |
20874c92 | 12166 | } |
74960c60 | 12167 | } |
1c5cfe86 | 12168 | |
348d480f PA |
12169 | /* Rescan breakpoints at the same address and section, marking the |
12170 | first one as "first" and any others as "duplicates". This is so | |
12171 | that the bpt instruction is only inserted once. If we have a | |
12172 | permanent breakpoint at the same place as BPT, make that one the | |
12173 | official one, and the rest as duplicates. Permanent breakpoints | |
12174 | are sorted first for the same address. | |
12175 | ||
12176 | Do the same for hardware watchpoints, but also considering the | |
12177 | watchpoint's type (regular/access/read) and length. */ | |
12178 | ||
12179 | bp_loc_first = NULL; | |
12180 | wp_loc_first = NULL; | |
12181 | awp_loc_first = NULL; | |
12182 | rwp_loc_first = NULL; | |
12183 | ALL_BP_LOCATIONS (loc, locp) | |
12184 | { | |
12185 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12186 | non-NULL. */ | |
348d480f | 12187 | struct bp_location **loc_first_p; |
d3fbdd86 | 12188 | b = loc->owner; |
348d480f | 12189 | |
6f380991 | 12190 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 12191 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
12192 | /* Don't detect duplicate for tracepoint locations because they are |
12193 | never duplicated. See the comments in field `duplicate' of | |
12194 | `struct bp_location'. */ | |
348d480f | 12195 | || is_tracepoint (b)) |
b775012e LM |
12196 | { |
12197 | /* Clear the condition modification flag. */ | |
12198 | loc->condition_changed = condition_unchanged; | |
12199 | continue; | |
12200 | } | |
348d480f | 12201 | |
348d480f PA |
12202 | if (b->type == bp_hardware_watchpoint) |
12203 | loc_first_p = &wp_loc_first; | |
12204 | else if (b->type == bp_read_watchpoint) | |
12205 | loc_first_p = &rwp_loc_first; | |
12206 | else if (b->type == bp_access_watchpoint) | |
12207 | loc_first_p = &awp_loc_first; | |
12208 | else | |
12209 | loc_first_p = &bp_loc_first; | |
12210 | ||
12211 | if (*loc_first_p == NULL | |
12212 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12213 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12214 | { | |
12215 | *loc_first_p = loc; | |
12216 | loc->duplicate = 0; | |
b775012e LM |
12217 | |
12218 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12219 | { | |
12220 | loc->needs_update = 1; | |
12221 | /* Clear the condition modification flag. */ | |
12222 | loc->condition_changed = condition_unchanged; | |
12223 | } | |
348d480f PA |
12224 | continue; |
12225 | } | |
12226 | ||
934709f0 PW |
12227 | |
12228 | /* This and the above ensure the invariant that the first location | |
12229 | is not duplicated, and is the inserted one. | |
12230 | All following are marked as duplicated, and are not inserted. */ | |
12231 | if (loc->inserted) | |
12232 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12233 | loc->duplicate = 1; |
12234 | ||
b775012e LM |
12235 | /* Clear the condition modification flag. */ |
12236 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12237 | } |
12238 | ||
a25a5a45 | 12239 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12240 | { |
04086b45 | 12241 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12242 | insert_breakpoint_locations (); |
12243 | else | |
12244 | { | |
44702360 PA |
12245 | /* Even though the caller told us to not insert new |
12246 | locations, we may still need to update conditions on the | |
12247 | target's side of breakpoints that were already inserted | |
12248 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12249 | only update conditions for locations that are marked |
12250 | "needs_update". */ | |
12251 | update_inserted_breakpoint_locations (); | |
12252 | } | |
12253 | } | |
348d480f | 12254 | |
04086b45 | 12255 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12256 | download_tracepoint_locations (); |
348d480f PA |
12257 | } |
12258 | ||
12259 | void | |
12260 | breakpoint_retire_moribund (void) | |
12261 | { | |
1123588c TT |
12262 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12263 | { | |
12264 | struct bp_location *loc = moribund_locations[ix]; | |
12265 | if (--(loc->events_till_retirement) == 0) | |
12266 | { | |
12267 | decref_bp_location (&loc); | |
12268 | unordered_remove (moribund_locations, ix); | |
12269 | --ix; | |
12270 | } | |
12271 | } | |
348d480f PA |
12272 | } |
12273 | ||
12274 | static void | |
44702360 | 12275 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12276 | { |
348d480f | 12277 | |
a70b8144 | 12278 | try |
492d29ea PA |
12279 | { |
12280 | update_global_location_list (insert_mode); | |
12281 | } | |
230d2906 | 12282 | catch (const gdb_exception_error &e) |
492d29ea PA |
12283 | { |
12284 | } | |
348d480f PA |
12285 | } |
12286 | ||
12287 | /* Clear BKP from a BPS. */ | |
12288 | ||
12289 | static void | |
12290 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12291 | { | |
12292 | bpstat bs; | |
12293 | ||
12294 | for (bs = bps; bs; bs = bs->next) | |
12295 | if (bs->breakpoint_at == bpt) | |
12296 | { | |
12297 | bs->breakpoint_at = NULL; | |
12298 | bs->old_val = NULL; | |
12299 | /* bs->commands will be freed later. */ | |
12300 | } | |
12301 | } | |
12302 | ||
12303 | /* Callback for iterate_over_threads. */ | |
12304 | static int | |
12305 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12306 | { | |
9a3c8263 | 12307 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12308 | |
12309 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12310 | return 0; | |
12311 | } | |
12312 | ||
12313 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12314 | callbacks. */ | |
12315 | ||
12316 | static void | |
12317 | say_where (struct breakpoint *b) | |
12318 | { | |
12319 | struct value_print_options opts; | |
12320 | ||
12321 | get_user_print_options (&opts); | |
12322 | ||
12323 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12324 | single string. */ | |
12325 | if (b->loc == NULL) | |
12326 | { | |
f00aae0f KS |
12327 | /* For pending locations, the output differs slightly based |
12328 | on b->extra_string. If this is non-NULL, it contains either | |
12329 | a condition or dprintf arguments. */ | |
12330 | if (b->extra_string == NULL) | |
12331 | { | |
12332 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12333 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12334 | } |
12335 | else if (b->type == bp_dprintf) | |
12336 | { | |
12337 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12338 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12339 | b->extra_string); |
12340 | } | |
12341 | else | |
12342 | { | |
12343 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12344 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12345 | b->extra_string); |
12346 | } | |
348d480f PA |
12347 | } |
12348 | else | |
12349 | { | |
2f202fde | 12350 | if (opts.addressprint || b->loc->symtab == NULL) |
6a831f06 PA |
12351 | printf_filtered (" at %ps", |
12352 | styled_string (address_style.style (), | |
12353 | paddress (b->loc->gdbarch, | |
12354 | b->loc->address))); | |
2f202fde | 12355 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12356 | { |
12357 | /* If there is a single location, we can print the location | |
12358 | more nicely. */ | |
12359 | if (b->loc->next == NULL) | |
0bb296cb | 12360 | { |
6a831f06 PA |
12361 | const char *filename |
12362 | = symtab_to_filename_for_display (b->loc->symtab); | |
12363 | printf_filtered (": file %ps, line %d.", | |
12364 | styled_string (file_name_style.style (), | |
12365 | filename), | |
0bb296cb TT |
12366 | b->loc->line_number); |
12367 | } | |
f8eba3c6 TT |
12368 | else |
12369 | /* This is not ideal, but each location may have a | |
12370 | different file name, and this at least reflects the | |
12371 | real situation somewhat. */ | |
f00aae0f | 12372 | printf_filtered (": %s.", |
d28cd78a | 12373 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12374 | } |
348d480f PA |
12375 | |
12376 | if (b->loc->next) | |
12377 | { | |
12378 | struct bp_location *loc = b->loc; | |
12379 | int n = 0; | |
12380 | for (; loc; loc = loc->next) | |
12381 | ++n; | |
12382 | printf_filtered (" (%d locations)", n); | |
12383 | } | |
12384 | } | |
12385 | } | |
12386 | ||
5f486660 | 12387 | bp_location::~bp_location () |
348d480f | 12388 | { |
5f486660 | 12389 | xfree (function_name); |
348d480f PA |
12390 | } |
12391 | ||
c1fc2657 | 12392 | /* Destructor for the breakpoint base class. */ |
348d480f | 12393 | |
c1fc2657 | 12394 | breakpoint::~breakpoint () |
348d480f | 12395 | { |
c1fc2657 SM |
12396 | xfree (this->cond_string); |
12397 | xfree (this->extra_string); | |
348d480f PA |
12398 | } |
12399 | ||
2060206e PA |
12400 | static struct bp_location * |
12401 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12402 | { |
5f486660 | 12403 | return new bp_location (self); |
348d480f PA |
12404 | } |
12405 | ||
2060206e PA |
12406 | static void |
12407 | base_breakpoint_re_set (struct breakpoint *b) | |
12408 | { | |
12409 | /* Nothing to re-set. */ | |
12410 | } | |
12411 | ||
12412 | #define internal_error_pure_virtual_called() \ | |
12413 | gdb_assert_not_reached ("pure virtual function called") | |
12414 | ||
12415 | static int | |
12416 | base_breakpoint_insert_location (struct bp_location *bl) | |
12417 | { | |
12418 | internal_error_pure_virtual_called (); | |
12419 | } | |
12420 | ||
12421 | static int | |
73971819 PA |
12422 | base_breakpoint_remove_location (struct bp_location *bl, |
12423 | enum remove_bp_reason reason) | |
2060206e PA |
12424 | { |
12425 | internal_error_pure_virtual_called (); | |
12426 | } | |
12427 | ||
12428 | static int | |
12429 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12430 | const address_space *aspace, |
09ac7c10 TT |
12431 | CORE_ADDR bp_addr, |
12432 | const struct target_waitstatus *ws) | |
2060206e PA |
12433 | { |
12434 | internal_error_pure_virtual_called (); | |
12435 | } | |
12436 | ||
12437 | static void | |
12438 | base_breakpoint_check_status (bpstat bs) | |
12439 | { | |
12440 | /* Always stop. */ | |
12441 | } | |
12442 | ||
12443 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12444 | errors. */ | |
12445 | ||
12446 | static int | |
12447 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12448 | { | |
12449 | internal_error_pure_virtual_called (); | |
12450 | } | |
12451 | ||
12452 | /* A "resources_needed" breakpoint_ops method that just internal | |
12453 | errors. */ | |
12454 | ||
12455 | static int | |
12456 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12457 | { | |
12458 | internal_error_pure_virtual_called (); | |
12459 | } | |
12460 | ||
12461 | static enum print_stop_action | |
12462 | base_breakpoint_print_it (bpstat bs) | |
12463 | { | |
12464 | internal_error_pure_virtual_called (); | |
12465 | } | |
12466 | ||
12467 | static void | |
12468 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12469 | struct ui_out *uiout) | |
12470 | { | |
12471 | /* nothing */ | |
12472 | } | |
12473 | ||
12474 | static void | |
12475 | base_breakpoint_print_mention (struct breakpoint *b) | |
12476 | { | |
12477 | internal_error_pure_virtual_called (); | |
12478 | } | |
12479 | ||
12480 | static void | |
12481 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12482 | { | |
12483 | internal_error_pure_virtual_called (); | |
12484 | } | |
12485 | ||
983af33b | 12486 | static void |
f00aae0f | 12487 | base_breakpoint_create_sals_from_location |
626d2320 | 12488 | (struct event_location *location, |
f00aae0f KS |
12489 | struct linespec_result *canonical, |
12490 | enum bptype type_wanted) | |
983af33b SDJ |
12491 | { |
12492 | internal_error_pure_virtual_called (); | |
12493 | } | |
12494 | ||
12495 | static void | |
12496 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12497 | struct linespec_result *c, | |
e1e01040 PA |
12498 | gdb::unique_xmalloc_ptr<char> cond_string, |
12499 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12500 | enum bptype type_wanted, |
12501 | enum bpdisp disposition, | |
12502 | int thread, | |
12503 | int task, int ignore_count, | |
12504 | const struct breakpoint_ops *o, | |
12505 | int from_tty, int enabled, | |
44f238bb | 12506 | int internal, unsigned flags) |
983af33b SDJ |
12507 | { |
12508 | internal_error_pure_virtual_called (); | |
12509 | } | |
12510 | ||
6c5b2ebe | 12511 | static std::vector<symtab_and_line> |
f00aae0f | 12512 | base_breakpoint_decode_location (struct breakpoint *b, |
626d2320 | 12513 | struct event_location *location, |
6c5b2ebe | 12514 | struct program_space *search_pspace) |
983af33b SDJ |
12515 | { |
12516 | internal_error_pure_virtual_called (); | |
12517 | } | |
12518 | ||
ab04a2af TT |
12519 | /* The default 'explains_signal' method. */ |
12520 | ||
47591c29 | 12521 | static int |
427cd150 | 12522 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12523 | { |
47591c29 | 12524 | return 1; |
ab04a2af TT |
12525 | } |
12526 | ||
9d6e6e84 HZ |
12527 | /* The default "after_condition_true" method. */ |
12528 | ||
12529 | static void | |
12530 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12531 | { | |
12532 | /* Nothing to do. */ | |
12533 | } | |
12534 | ||
ab04a2af | 12535 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12536 | { |
2060206e PA |
12537 | base_breakpoint_allocate_location, |
12538 | base_breakpoint_re_set, | |
12539 | base_breakpoint_insert_location, | |
12540 | base_breakpoint_remove_location, | |
12541 | base_breakpoint_breakpoint_hit, | |
12542 | base_breakpoint_check_status, | |
12543 | base_breakpoint_resources_needed, | |
12544 | base_breakpoint_works_in_software_mode, | |
12545 | base_breakpoint_print_it, | |
12546 | NULL, | |
12547 | base_breakpoint_print_one_detail, | |
12548 | base_breakpoint_print_mention, | |
983af33b | 12549 | base_breakpoint_print_recreate, |
5f700d83 | 12550 | base_breakpoint_create_sals_from_location, |
983af33b | 12551 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12552 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12553 | base_breakpoint_explains_signal, |
12554 | base_breakpoint_after_condition_true, | |
2060206e PA |
12555 | }; |
12556 | ||
12557 | /* Default breakpoint_ops methods. */ | |
12558 | ||
12559 | static void | |
348d480f PA |
12560 | bkpt_re_set (struct breakpoint *b) |
12561 | { | |
06edf0c0 | 12562 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12563 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12564 | { |
f00aae0f | 12565 | /* Anything without a location can't be re-set. */ |
348d480f | 12566 | delete_breakpoint (b); |
06edf0c0 | 12567 | return; |
348d480f | 12568 | } |
06edf0c0 PA |
12569 | |
12570 | breakpoint_re_set_default (b); | |
348d480f PA |
12571 | } |
12572 | ||
2060206e | 12573 | static int |
348d480f PA |
12574 | bkpt_insert_location (struct bp_location *bl) |
12575 | { | |
cd6c3b4f YQ |
12576 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12577 | ||
579c6ad9 | 12578 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12579 | bl->target_info.placed_address = addr; |
12580 | ||
348d480f | 12581 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12582 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12583 | else |
7c16b83e | 12584 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12585 | } |
12586 | ||
2060206e | 12587 | static int |
73971819 | 12588 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12589 | { |
12590 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12591 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12592 | else | |
73971819 | 12593 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12594 | } |
12595 | ||
2060206e | 12596 | static int |
348d480f | 12597 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12598 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12599 | const struct target_waitstatus *ws) |
348d480f | 12600 | { |
09ac7c10 | 12601 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12602 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12603 | return 0; |
12604 | ||
348d480f PA |
12605 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12606 | aspace, bp_addr)) | |
12607 | return 0; | |
12608 | ||
12609 | if (overlay_debugging /* unmapped overlay section */ | |
12610 | && section_is_overlay (bl->section) | |
12611 | && !section_is_mapped (bl->section)) | |
12612 | return 0; | |
12613 | ||
12614 | return 1; | |
12615 | } | |
12616 | ||
cd1608cc PA |
12617 | static int |
12618 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12619 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12620 | const struct target_waitstatus *ws) |
12621 | { | |
12622 | if (dprintf_style == dprintf_style_agent | |
12623 | && target_can_run_breakpoint_commands ()) | |
12624 | { | |
12625 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12626 | for this address it must be for a breakpoint that happens to | |
12627 | be set at the same address. */ | |
12628 | return 0; | |
12629 | } | |
12630 | ||
12631 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12632 | } | |
12633 | ||
2060206e | 12634 | static int |
348d480f PA |
12635 | bkpt_resources_needed (const struct bp_location *bl) |
12636 | { | |
12637 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12638 | ||
12639 | return 1; | |
12640 | } | |
12641 | ||
2060206e | 12642 | static enum print_stop_action |
348d480f PA |
12643 | bkpt_print_it (bpstat bs) |
12644 | { | |
348d480f PA |
12645 | struct breakpoint *b; |
12646 | const struct bp_location *bl; | |
001c8c33 | 12647 | int bp_temp; |
79a45e25 | 12648 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12649 | |
12650 | gdb_assert (bs->bp_location_at != NULL); | |
12651 | ||
b6433ede | 12652 | bl = bs->bp_location_at.get (); |
348d480f PA |
12653 | b = bs->breakpoint_at; |
12654 | ||
001c8c33 PA |
12655 | bp_temp = b->disposition == disp_del; |
12656 | if (bl->address != bl->requested_address) | |
12657 | breakpoint_adjustment_warning (bl->requested_address, | |
12658 | bl->address, | |
12659 | b->number, 1); | |
12660 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12661 | maybe_print_thread_hit_breakpoint (uiout); |
12662 | ||
112e8700 | 12663 | if (uiout->is_mi_like_p ()) |
348d480f | 12664 | { |
112e8700 | 12665 | uiout->field_string ("reason", |
001c8c33 | 12666 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12667 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12668 | } |
6a831f06 PA |
12669 | if (bp_temp) |
12670 | uiout->message ("Temporary breakpoint %pF, ", | |
12671 | signed_field ("bkptno", b->number)); | |
12672 | else | |
12673 | uiout->message ("Breakpoint %pF, ", | |
12674 | signed_field ("bkptno", b->number)); | |
06edf0c0 | 12675 | |
001c8c33 | 12676 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12677 | } |
12678 | ||
2060206e | 12679 | static void |
06edf0c0 PA |
12680 | bkpt_print_mention (struct breakpoint *b) |
12681 | { | |
112e8700 | 12682 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12683 | return; |
12684 | ||
12685 | switch (b->type) | |
12686 | { | |
12687 | case bp_breakpoint: | |
12688 | case bp_gnu_ifunc_resolver: | |
12689 | if (b->disposition == disp_del) | |
12690 | printf_filtered (_("Temporary breakpoint")); | |
12691 | else | |
12692 | printf_filtered (_("Breakpoint")); | |
12693 | printf_filtered (_(" %d"), b->number); | |
12694 | if (b->type == bp_gnu_ifunc_resolver) | |
12695 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12696 | break; | |
12697 | case bp_hardware_breakpoint: | |
12698 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12699 | break; | |
e7e0cddf SS |
12700 | case bp_dprintf: |
12701 | printf_filtered (_("Dprintf %d"), b->number); | |
12702 | break; | |
06edf0c0 PA |
12703 | } |
12704 | ||
12705 | say_where (b); | |
12706 | } | |
12707 | ||
2060206e | 12708 | static void |
06edf0c0 PA |
12709 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12710 | { | |
12711 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12712 | fprintf_unfiltered (fp, "tbreak"); | |
12713 | else if (tp->type == bp_breakpoint) | |
12714 | fprintf_unfiltered (fp, "break"); | |
12715 | else if (tp->type == bp_hardware_breakpoint | |
12716 | && tp->disposition == disp_del) | |
12717 | fprintf_unfiltered (fp, "thbreak"); | |
12718 | else if (tp->type == bp_hardware_breakpoint) | |
12719 | fprintf_unfiltered (fp, "hbreak"); | |
12720 | else | |
12721 | internal_error (__FILE__, __LINE__, | |
12722 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12723 | ||
f00aae0f | 12724 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12725 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12726 | |
12727 | /* Print out extra_string if this breakpoint is pending. It might | |
12728 | contain, for example, conditions that were set by the user. */ | |
12729 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12730 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12731 | ||
dd11a36c | 12732 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12733 | } |
12734 | ||
983af33b | 12735 | static void |
626d2320 | 12736 | bkpt_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
12737 | struct linespec_result *canonical, |
12738 | enum bptype type_wanted) | |
983af33b | 12739 | { |
f00aae0f | 12740 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12741 | } |
12742 | ||
12743 | static void | |
12744 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12745 | struct linespec_result *canonical, | |
e1e01040 PA |
12746 | gdb::unique_xmalloc_ptr<char> cond_string, |
12747 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12748 | enum bptype type_wanted, |
12749 | enum bpdisp disposition, | |
12750 | int thread, | |
12751 | int task, int ignore_count, | |
12752 | const struct breakpoint_ops *ops, | |
12753 | int from_tty, int enabled, | |
44f238bb | 12754 | int internal, unsigned flags) |
983af33b | 12755 | { |
023fa29b | 12756 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12757 | std::move (cond_string), |
12758 | std::move (extra_string), | |
e7e0cddf | 12759 | type_wanted, |
983af33b SDJ |
12760 | disposition, thread, task, |
12761 | ignore_count, ops, from_tty, | |
44f238bb | 12762 | enabled, internal, flags); |
983af33b SDJ |
12763 | } |
12764 | ||
6c5b2ebe | 12765 | static std::vector<symtab_and_line> |
f00aae0f | 12766 | bkpt_decode_location (struct breakpoint *b, |
626d2320 | 12767 | struct event_location *location, |
6c5b2ebe | 12768 | struct program_space *search_pspace) |
983af33b | 12769 | { |
6c5b2ebe | 12770 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12771 | } |
12772 | ||
06edf0c0 PA |
12773 | /* Virtual table for internal breakpoints. */ |
12774 | ||
12775 | static void | |
12776 | internal_bkpt_re_set (struct breakpoint *b) | |
12777 | { | |
12778 | switch (b->type) | |
12779 | { | |
12780 | /* Delete overlay event and longjmp master breakpoints; they | |
12781 | will be reset later by breakpoint_re_set. */ | |
12782 | case bp_overlay_event: | |
12783 | case bp_longjmp_master: | |
12784 | case bp_std_terminate_master: | |
12785 | case bp_exception_master: | |
12786 | delete_breakpoint (b); | |
12787 | break; | |
12788 | ||
12789 | /* This breakpoint is special, it's set up when the inferior | |
dda83cd7 | 12790 | starts and we really don't want to touch it. */ |
06edf0c0 PA |
12791 | case bp_shlib_event: |
12792 | ||
12793 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12794 | it is set up, we do not want to touch it. */ | |
12795 | case bp_thread_event: | |
12796 | break; | |
12797 | } | |
12798 | } | |
12799 | ||
12800 | static void | |
12801 | internal_bkpt_check_status (bpstat bs) | |
12802 | { | |
a9b3a50f PA |
12803 | if (bs->breakpoint_at->type == bp_shlib_event) |
12804 | { | |
12805 | /* If requested, stop when the dynamic linker notifies GDB of | |
12806 | events. This allows the user to get control and place | |
12807 | breakpoints in initializer routines for dynamically loaded | |
12808 | objects (among other things). */ | |
12809 | bs->stop = stop_on_solib_events; | |
12810 | bs->print = stop_on_solib_events; | |
12811 | } | |
12812 | else | |
12813 | bs->stop = 0; | |
06edf0c0 PA |
12814 | } |
12815 | ||
12816 | static enum print_stop_action | |
12817 | internal_bkpt_print_it (bpstat bs) | |
12818 | { | |
06edf0c0 | 12819 | struct breakpoint *b; |
06edf0c0 | 12820 | |
06edf0c0 PA |
12821 | b = bs->breakpoint_at; |
12822 | ||
06edf0c0 PA |
12823 | switch (b->type) |
12824 | { | |
348d480f PA |
12825 | case bp_shlib_event: |
12826 | /* Did we stop because the user set the stop_on_solib_events | |
12827 | variable? (If so, we report this as a generic, "Stopped due | |
12828 | to shlib event" message.) */ | |
edcc5120 | 12829 | print_solib_event (0); |
348d480f PA |
12830 | break; |
12831 | ||
12832 | case bp_thread_event: | |
12833 | /* Not sure how we will get here. | |
12834 | GDB should not stop for these breakpoints. */ | |
12835 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12836 | break; |
12837 | ||
12838 | case bp_overlay_event: | |
12839 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12840 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12841 | break; |
12842 | ||
12843 | case bp_longjmp_master: | |
12844 | /* These should never be enabled. */ | |
12845 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12846 | break; |
12847 | ||
12848 | case bp_std_terminate_master: | |
12849 | /* These should never be enabled. */ | |
12850 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12851 | "gdb should not stop!\n")); | |
348d480f PA |
12852 | break; |
12853 | ||
12854 | case bp_exception_master: | |
12855 | /* These should never be enabled. */ | |
12856 | printf_filtered (_("Exception Master Breakpoint: " | |
12857 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12858 | break; |
12859 | } | |
12860 | ||
001c8c33 | 12861 | return PRINT_NOTHING; |
06edf0c0 PA |
12862 | } |
12863 | ||
12864 | static void | |
12865 | internal_bkpt_print_mention (struct breakpoint *b) | |
12866 | { | |
12867 | /* Nothing to mention. These breakpoints are internal. */ | |
12868 | } | |
12869 | ||
06edf0c0 PA |
12870 | /* Virtual table for momentary breakpoints */ |
12871 | ||
12872 | static void | |
12873 | momentary_bkpt_re_set (struct breakpoint *b) | |
12874 | { | |
12875 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12876 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12877 | Otherwise these should have been blown away via the cleanup chain |
12878 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12879 | } | |
12880 | ||
12881 | static void | |
12882 | momentary_bkpt_check_status (bpstat bs) | |
12883 | { | |
12884 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12885 | } | |
12886 | ||
12887 | static enum print_stop_action | |
12888 | momentary_bkpt_print_it (bpstat bs) | |
12889 | { | |
001c8c33 | 12890 | return PRINT_UNKNOWN; |
348d480f PA |
12891 | } |
12892 | ||
06edf0c0 PA |
12893 | static void |
12894 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12895 | { |
06edf0c0 | 12896 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12897 | } |
12898 | ||
e2e4d78b JK |
12899 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12900 | ||
12901 | It gets cleared already on the removal of the first one of such placed | |
12902 | breakpoints. This is OK as they get all removed altogether. */ | |
12903 | ||
c1fc2657 | 12904 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12905 | { |
c1fc2657 | 12906 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12907 | |
c1fc2657 | 12908 | if (tp != NULL) |
e2e4d78b | 12909 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12910 | } |
12911 | ||
55aa24fb SDJ |
12912 | /* Specific methods for probe breakpoints. */ |
12913 | ||
12914 | static int | |
12915 | bkpt_probe_insert_location (struct bp_location *bl) | |
12916 | { | |
12917 | int v = bkpt_insert_location (bl); | |
12918 | ||
12919 | if (v == 0) | |
12920 | { | |
12921 | /* The insertion was successful, now let's set the probe's semaphore | |
12922 | if needed. */ | |
935676c9 | 12923 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12924 | } |
12925 | ||
12926 | return v; | |
12927 | } | |
12928 | ||
12929 | static int | |
73971819 PA |
12930 | bkpt_probe_remove_location (struct bp_location *bl, |
12931 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12932 | { |
12933 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12934 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12935 | |
73971819 | 12936 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12937 | } |
12938 | ||
12939 | static void | |
626d2320 | 12940 | bkpt_probe_create_sals_from_location (struct event_location *location, |
5f700d83 | 12941 | struct linespec_result *canonical, |
f00aae0f | 12942 | enum bptype type_wanted) |
55aa24fb SDJ |
12943 | { |
12944 | struct linespec_sals lsal; | |
12945 | ||
c2f4122d | 12946 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12947 | lsal.canonical |
12948 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12949 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12950 | } |
12951 | ||
6c5b2ebe | 12952 | static std::vector<symtab_and_line> |
f00aae0f | 12953 | bkpt_probe_decode_location (struct breakpoint *b, |
626d2320 | 12954 | struct event_location *location, |
6c5b2ebe | 12955 | struct program_space *search_pspace) |
55aa24fb | 12956 | { |
6c5b2ebe PA |
12957 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12958 | if (sals.empty ()) | |
55aa24fb | 12959 | error (_("probe not found")); |
6c5b2ebe | 12960 | return sals; |
55aa24fb SDJ |
12961 | } |
12962 | ||
348d480f | 12963 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12964 | |
348d480f PA |
12965 | static void |
12966 | tracepoint_re_set (struct breakpoint *b) | |
12967 | { | |
12968 | breakpoint_re_set_default (b); | |
12969 | } | |
876fa593 | 12970 | |
348d480f PA |
12971 | static int |
12972 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12973 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12974 | const struct target_waitstatus *ws) |
348d480f PA |
12975 | { |
12976 | /* By definition, the inferior does not report stops at | |
12977 | tracepoints. */ | |
12978 | return 0; | |
74960c60 VP |
12979 | } |
12980 | ||
12981 | static void | |
348d480f PA |
12982 | tracepoint_print_one_detail (const struct breakpoint *self, |
12983 | struct ui_out *uiout) | |
74960c60 | 12984 | { |
d9b3f62e | 12985 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12986 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12987 | { |
12988 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12989 | |
6a831f06 PA |
12990 | uiout->message ("\tmarker id is %pF\n", |
12991 | string_field ("static-tracepoint-marker-string-id", | |
12992 | tp->static_trace_marker_id.c_str ())); | |
348d480f | 12993 | } |
0d381245 VP |
12994 | } |
12995 | ||
a474d7c2 | 12996 | static void |
348d480f | 12997 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12998 | { |
112e8700 | 12999 | if (current_uiout->is_mi_like_p ()) |
348d480f | 13000 | return; |
cc59ec59 | 13001 | |
348d480f PA |
13002 | switch (b->type) |
13003 | { | |
13004 | case bp_tracepoint: | |
13005 | printf_filtered (_("Tracepoint")); | |
13006 | printf_filtered (_(" %d"), b->number); | |
13007 | break; | |
13008 | case bp_fast_tracepoint: | |
13009 | printf_filtered (_("Fast tracepoint")); | |
13010 | printf_filtered (_(" %d"), b->number); | |
13011 | break; | |
13012 | case bp_static_tracepoint: | |
13013 | printf_filtered (_("Static tracepoint")); | |
13014 | printf_filtered (_(" %d"), b->number); | |
13015 | break; | |
13016 | default: | |
13017 | internal_error (__FILE__, __LINE__, | |
13018 | _("unhandled tracepoint type %d"), (int) b->type); | |
13019 | } | |
13020 | ||
13021 | say_where (b); | |
a474d7c2 PA |
13022 | } |
13023 | ||
348d480f | 13024 | static void |
d9b3f62e | 13025 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13026 | { |
d9b3f62e PA |
13027 | struct tracepoint *tp = (struct tracepoint *) self; |
13028 | ||
13029 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13030 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 13031 | else if (self->type == bp_static_tracepoint) |
348d480f | 13032 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13033 | else if (self->type == bp_tracepoint) |
348d480f PA |
13034 | fprintf_unfiltered (fp, "trace"); |
13035 | else | |
13036 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13037 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13038 | |
f00aae0f | 13039 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 13040 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
13041 | print_recreate_thread (self, fp); |
13042 | ||
13043 | if (tp->pass_count) | |
13044 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13045 | } |
13046 | ||
983af33b | 13047 | static void |
626d2320 | 13048 | tracepoint_create_sals_from_location (struct event_location *location, |
f00aae0f KS |
13049 | struct linespec_result *canonical, |
13050 | enum bptype type_wanted) | |
983af33b | 13051 | { |
f00aae0f | 13052 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
13053 | } |
13054 | ||
13055 | static void | |
13056 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13057 | struct linespec_result *canonical, | |
e1e01040 PA |
13058 | gdb::unique_xmalloc_ptr<char> cond_string, |
13059 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13060 | enum bptype type_wanted, |
13061 | enum bpdisp disposition, | |
13062 | int thread, | |
13063 | int task, int ignore_count, | |
13064 | const struct breakpoint_ops *ops, | |
13065 | int from_tty, int enabled, | |
44f238bb | 13066 | int internal, unsigned flags) |
983af33b | 13067 | { |
023fa29b | 13068 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
13069 | std::move (cond_string), |
13070 | std::move (extra_string), | |
e7e0cddf | 13071 | type_wanted, |
983af33b SDJ |
13072 | disposition, thread, task, |
13073 | ignore_count, ops, from_tty, | |
44f238bb | 13074 | enabled, internal, flags); |
983af33b SDJ |
13075 | } |
13076 | ||
6c5b2ebe | 13077 | static std::vector<symtab_and_line> |
f00aae0f | 13078 | tracepoint_decode_location (struct breakpoint *b, |
626d2320 | 13079 | struct event_location *location, |
6c5b2ebe | 13080 | struct program_space *search_pspace) |
983af33b | 13081 | { |
6c5b2ebe | 13082 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
13083 | } |
13084 | ||
2060206e | 13085 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13086 | |
bac7c5cf | 13087 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
13088 | |
13089 | static void | |
f00aae0f | 13090 | tracepoint_probe_create_sals_from_location |
626d2320 | 13091 | (struct event_location *location, |
f00aae0f KS |
13092 | struct linespec_result *canonical, |
13093 | enum bptype type_wanted) | |
55aa24fb SDJ |
13094 | { |
13095 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 13096 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
13097 | } |
13098 | ||
6c5b2ebe | 13099 | static std::vector<symtab_and_line> |
f00aae0f | 13100 | tracepoint_probe_decode_location (struct breakpoint *b, |
626d2320 | 13101 | struct event_location *location, |
6c5b2ebe | 13102 | struct program_space *search_pspace) |
55aa24fb SDJ |
13103 | { |
13104 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 13105 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
13106 | } |
13107 | ||
5c2b4418 HZ |
13108 | /* Dprintf breakpoint_ops methods. */ |
13109 | ||
13110 | static void | |
13111 | dprintf_re_set (struct breakpoint *b) | |
13112 | { | |
13113 | breakpoint_re_set_default (b); | |
13114 | ||
f00aae0f KS |
13115 | /* extra_string should never be non-NULL for dprintf. */ |
13116 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
13117 | |
13118 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13119 | 2 - create a dprintf, which resolves fine. | |
13120 | 3 - disconnect from target 1 | |
13121 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13122 | ||
13123 | After steps #3/#4, you'll want the dprintf command list to | |
13124 | be updated, because target 1 and 2 may well return different | |
13125 | answers for target_can_run_breakpoint_commands(). | |
13126 | Given absence of finer grained resetting, we get to do | |
13127 | it all the time. */ | |
13128 | if (b->extra_string != NULL) | |
13129 | update_dprintf_command_list (b); | |
13130 | } | |
13131 | ||
2d9442cc HZ |
13132 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13133 | ||
13134 | static void | |
13135 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13136 | { | |
f00aae0f | 13137 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 13138 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
13139 | tp->extra_string); |
13140 | print_recreate_thread (tp, fp); | |
13141 | } | |
13142 | ||
9d6e6e84 HZ |
13143 | /* Implement the "after_condition_true" breakpoint_ops method for |
13144 | dprintf. | |
13145 | ||
13146 | dprintf's are implemented with regular commands in their command | |
13147 | list, but we run the commands here instead of before presenting the | |
13148 | stop to the user, as dprintf's don't actually cause a stop. This | |
13149 | also makes it so that the commands of multiple dprintfs at the same | |
13150 | address are all handled. */ | |
13151 | ||
13152 | static void | |
13153 | dprintf_after_condition_true (struct bpstats *bs) | |
13154 | { | |
04afa70c | 13155 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
13156 | struct bpstats *tmp_bs_p = &tmp_bs; |
13157 | ||
13158 | /* dprintf's never cause a stop. This wasn't set in the | |
13159 | check_status hook instead because that would make the dprintf's | |
13160 | condition not be evaluated. */ | |
13161 | bs->stop = 0; | |
13162 | ||
13163 | /* Run the command list here. Take ownership of it instead of | |
13164 | copying. We never want these commands to run later in | |
13165 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13166 | be set at same address as this dprintf, or even if running the | |
13167 | commands here throws. */ | |
13168 | tmp_bs.commands = bs->commands; | |
13169 | bs->commands = NULL; | |
9d6e6e84 HZ |
13170 | |
13171 | bpstat_do_actions_1 (&tmp_bs_p); | |
13172 | ||
13173 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13174 | bpstat_do_actions_1 may return early without processing the whole | |
13175 | list. */ | |
9d6e6e84 HZ |
13176 | } |
13177 | ||
983af33b SDJ |
13178 | /* The breakpoint_ops structure to be used on static tracepoints with |
13179 | markers (`-m'). */ | |
13180 | ||
13181 | static void | |
626d2320 | 13182 | strace_marker_create_sals_from_location (struct event_location *location, |
5f700d83 | 13183 | struct linespec_result *canonical, |
f00aae0f | 13184 | enum bptype type_wanted) |
983af33b SDJ |
13185 | { |
13186 | struct linespec_sals lsal; | |
f00aae0f | 13187 | const char *arg_start, *arg; |
983af33b | 13188 | |
a20714ff | 13189 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 13190 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 13191 | |
f2fc3015 TT |
13192 | std::string str (arg_start, arg - arg_start); |
13193 | const char *ptr = str.c_str (); | |
a20714ff PA |
13194 | canonical->location |
13195 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 13196 | |
8e9e35b1 TT |
13197 | lsal.canonical |
13198 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 13199 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
13200 | } |
13201 | ||
13202 | static void | |
13203 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13204 | struct linespec_result *canonical, | |
e1e01040 PA |
13205 | gdb::unique_xmalloc_ptr<char> cond_string, |
13206 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13207 | enum bptype type_wanted, |
13208 | enum bpdisp disposition, | |
13209 | int thread, | |
13210 | int task, int ignore_count, | |
13211 | const struct breakpoint_ops *ops, | |
13212 | int from_tty, int enabled, | |
44f238bb | 13213 | int internal, unsigned flags) |
983af33b | 13214 | { |
6c5b2ebe | 13215 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
13216 | |
13217 | /* If the user is creating a static tracepoint by marker id | |
13218 | (strace -m MARKER_ID), then store the sals index, so that | |
13219 | breakpoint_re_set can try to match up which of the newly | |
13220 | found markers corresponds to this one, and, don't try to | |
13221 | expand multiple locations for each sal, given than SALS | |
13222 | already should contain all sals for MARKER_ID. */ | |
13223 | ||
6c5b2ebe | 13224 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 13225 | { |
6c5b2ebe PA |
13226 | event_location_up location |
13227 | = copy_event_location (canonical->location.get ()); | |
983af33b | 13228 | |
b270e6f9 | 13229 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 13230 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13231 | std::move (location), NULL, |
e1e01040 PA |
13232 | std::move (cond_string), |
13233 | std::move (extra_string), | |
e7e0cddf | 13234 | type_wanted, disposition, |
983af33b | 13235 | thread, task, ignore_count, ops, |
44f238bb | 13236 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13237 | canonical->special_display); |
13238 | /* Given that its possible to have multiple markers with | |
13239 | the same string id, if the user is creating a static | |
13240 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13241 | store the sals index, so that breakpoint_re_set can | |
13242 | try to match up which of the newly found markers | |
13243 | corresponds to this one */ | |
13244 | tp->static_trace_marker_id_idx = i; | |
13245 | ||
b270e6f9 | 13246 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13247 | } |
13248 | } | |
13249 | ||
6c5b2ebe | 13250 | static std::vector<symtab_and_line> |
f00aae0f | 13251 | strace_marker_decode_location (struct breakpoint *b, |
626d2320 | 13252 | struct event_location *location, |
6c5b2ebe | 13253 | struct program_space *search_pspace) |
983af33b SDJ |
13254 | { |
13255 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13256 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13257 | |
6c5b2ebe PA |
13258 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13259 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13260 | { |
6c5b2ebe PA |
13261 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13262 | sals.resize (1); | |
13263 | return sals; | |
983af33b SDJ |
13264 | } |
13265 | else | |
5d9310c4 | 13266 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13267 | } |
13268 | ||
13269 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13270 | ||
13271 | static int | |
13272 | strace_marker_p (struct breakpoint *b) | |
13273 | { | |
13274 | return b->ops == &strace_marker_breakpoint_ops; | |
13275 | } | |
13276 | ||
53a5351d | 13277 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13278 | structures. */ |
c906108c SS |
13279 | |
13280 | void | |
fba45db2 | 13281 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13282 | { |
52f0bd74 | 13283 | struct breakpoint *b; |
c906108c | 13284 | |
8a3fe4f8 | 13285 | gdb_assert (bpt != NULL); |
c906108c | 13286 | |
4a64f543 MS |
13287 | /* Has this bp already been deleted? This can happen because |
13288 | multiple lists can hold pointers to bp's. bpstat lists are | |
13289 | especial culprits. | |
13290 | ||
13291 | One example of this happening is a watchpoint's scope bp. When | |
13292 | the scope bp triggers, we notice that the watchpoint is out of | |
13293 | scope, and delete it. We also delete its scope bp. But the | |
13294 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13295 | That bpstat is then checked for auto-deleting bp's, which are | |
13296 | deleted. | |
13297 | ||
13298 | A real solution to this problem might involve reference counts in | |
13299 | bp's, and/or giving them pointers back to their referencing | |
13300 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13301 | storage when no more references were extent. A cheaper bandaid | |
13302 | was chosen. */ | |
c906108c SS |
13303 | if (bpt->type == bp_none) |
13304 | return; | |
13305 | ||
4a64f543 MS |
13306 | /* At least avoid this stale reference until the reference counting |
13307 | of breakpoints gets resolved. */ | |
d0fb5eae | 13308 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13309 | { |
d0fb5eae | 13310 | struct breakpoint *related; |
3a5c3e22 | 13311 | struct watchpoint *w; |
d0fb5eae JK |
13312 | |
13313 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13314 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13315 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13316 | w = (struct watchpoint *) bpt; |
13317 | else | |
13318 | w = NULL; | |
13319 | if (w != NULL) | |
13320 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13321 | |
13322 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13323 | for (related = bpt; related->related_breakpoint != bpt; | |
13324 | related = related->related_breakpoint); | |
13325 | related->related_breakpoint = bpt->related_breakpoint; | |
13326 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13327 | } |
13328 | ||
a9634178 TJB |
13329 | /* watch_command_1 creates a watchpoint but only sets its number if |
13330 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13331 | a problem in that process, we'll be asked to delete the half-created | |
13332 | watchpoint. In that case, don't announce the deletion. */ | |
13333 | if (bpt->number) | |
76727919 | 13334 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13335 | |
c906108c SS |
13336 | if (breakpoint_chain == bpt) |
13337 | breakpoint_chain = bpt->next; | |
13338 | ||
c906108c SS |
13339 | ALL_BREAKPOINTS (b) |
13340 | if (b->next == bpt) | |
c5aa993b JM |
13341 | { |
13342 | b->next = bpt->next; | |
13343 | break; | |
13344 | } | |
c906108c | 13345 | |
f431efe5 PA |
13346 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13347 | been freed. */ | |
13348 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13349 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13350 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13351 | commands are associated with the bpstat; if we remove it here, | |
13352 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13353 | event-top.c won't do anything, and temporary breakpoints with | |
13354 | commands won't work. */ | |
13355 | ||
13356 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13357 | ||
4a64f543 MS |
13358 | /* Now that breakpoint is removed from breakpoint list, update the |
13359 | global location list. This will remove locations that used to | |
13360 | belong to this breakpoint. Do this before freeing the breakpoint | |
13361 | itself, since remove_breakpoint looks at location's owner. It | |
13362 | might be better design to have location completely | |
13363 | self-contained, but it's not the case now. */ | |
44702360 | 13364 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13365 | |
4a64f543 MS |
13366 | /* On the chance that someone will soon try again to delete this |
13367 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13368 | bpt->type = bp_none; |
4d01a485 | 13369 | delete bpt; |
c906108c SS |
13370 | } |
13371 | ||
51be5b68 PA |
13372 | /* Iterator function to call a user-provided callback function once |
13373 | for each of B and its related breakpoints. */ | |
13374 | ||
13375 | static void | |
13376 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13377 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13378 | { |
13379 | struct breakpoint *related; | |
13380 | ||
13381 | related = b; | |
13382 | do | |
13383 | { | |
13384 | struct breakpoint *next; | |
13385 | ||
13386 | /* FUNCTION may delete RELATED. */ | |
13387 | next = related->related_breakpoint; | |
13388 | ||
13389 | if (next == related) | |
13390 | { | |
13391 | /* RELATED is the last ring entry. */ | |
48649e1b | 13392 | function (related); |
51be5b68 PA |
13393 | |
13394 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13395 | B. There's nothing left to do anyway, so just break | |
13396 | out. */ | |
13397 | break; | |
13398 | } | |
13399 | else | |
48649e1b | 13400 | function (related); |
51be5b68 PA |
13401 | |
13402 | related = next; | |
13403 | } | |
13404 | while (related != b); | |
13405 | } | |
95a42b64 | 13406 | |
4495129a | 13407 | static void |
981a3fb3 | 13408 | delete_command (const char *arg, int from_tty) |
c906108c | 13409 | { |
35df4500 | 13410 | struct breakpoint *b, *b_tmp; |
c906108c | 13411 | |
ea9365bb TT |
13412 | dont_repeat (); |
13413 | ||
c906108c SS |
13414 | if (arg == 0) |
13415 | { | |
13416 | int breaks_to_delete = 0; | |
13417 | ||
46c6471b | 13418 | /* Delete all breakpoints if no argument. Do not delete |
dda83cd7 SM |
13419 | internal breakpoints, these have to be deleted with an |
13420 | explicit breakpoint number argument. */ | |
c5aa993b | 13421 | ALL_BREAKPOINTS (b) |
46c6471b | 13422 | if (user_breakpoint_p (b)) |
973d738b DJ |
13423 | { |
13424 | breaks_to_delete = 1; | |
13425 | break; | |
13426 | } | |
c906108c SS |
13427 | |
13428 | /* Ask user only if there are some breakpoints to delete. */ | |
13429 | if (!from_tty | |
e2e0b3e5 | 13430 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13431 | { |
35df4500 | 13432 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13433 | if (user_breakpoint_p (b)) |
c5aa993b | 13434 | delete_breakpoint (b); |
c906108c SS |
13435 | } |
13436 | } | |
13437 | else | |
48649e1b | 13438 | map_breakpoint_numbers |
b926417a | 13439 | (arg, [&] (breakpoint *br) |
48649e1b | 13440 | { |
b926417a | 13441 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13442 | }); |
c906108c SS |
13443 | } |
13444 | ||
c2f4122d PA |
13445 | /* Return true if all locations of B bound to PSPACE are pending. If |
13446 | PSPACE is NULL, all locations of all program spaces are | |
13447 | considered. */ | |
13448 | ||
0d381245 | 13449 | static int |
c2f4122d | 13450 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13451 | { |
c2f4122d PA |
13452 | struct bp_location *loc; |
13453 | ||
13454 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13455 | if ((pspace == NULL | |
13456 | || loc->pspace == pspace) | |
13457 | && !loc->shlib_disabled | |
8645ff69 | 13458 | && !loc->pspace->executing_startup) |
0d381245 VP |
13459 | return 0; |
13460 | return 1; | |
fe3f5fa8 VP |
13461 | } |
13462 | ||
776592bf DE |
13463 | /* Subroutine of update_breakpoint_locations to simplify it. |
13464 | Return non-zero if multiple fns in list LOC have the same name. | |
13465 | Null names are ignored. */ | |
13466 | ||
13467 | static int | |
13468 | ambiguous_names_p (struct bp_location *loc) | |
13469 | { | |
13470 | struct bp_location *l; | |
c1fb9836 TT |
13471 | htab_up htab (htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13472 | xcalloc, xfree)); | |
776592bf DE |
13473 | |
13474 | for (l = loc; l != NULL; l = l->next) | |
13475 | { | |
13476 | const char **slot; | |
13477 | const char *name = l->function_name; | |
13478 | ||
13479 | /* Allow for some names to be NULL, ignore them. */ | |
13480 | if (name == NULL) | |
13481 | continue; | |
13482 | ||
c1fb9836 | 13483 | slot = (const char **) htab_find_slot (htab.get (), (const void *) name, |
776592bf | 13484 | INSERT); |
4a64f543 MS |
13485 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13486 | returns NULL. */ | |
776592bf | 13487 | if (*slot != NULL) |
c1fb9836 | 13488 | return 1; |
776592bf DE |
13489 | *slot = name; |
13490 | } | |
13491 | ||
776592bf DE |
13492 | return 0; |
13493 | } | |
13494 | ||
0fb4aa4b PA |
13495 | /* When symbols change, it probably means the sources changed as well, |
13496 | and it might mean the static tracepoint markers are no longer at | |
13497 | the same address or line numbers they used to be at last we | |
13498 | checked. Losing your static tracepoints whenever you rebuild is | |
13499 | undesirable. This function tries to resync/rematch gdb static | |
13500 | tracepoints with the markers on the target, for static tracepoints | |
13501 | that have not been set by marker id. Static tracepoint that have | |
13502 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13503 | The heuristic is: | |
13504 | ||
13505 | 1) For a tracepoint set at a specific address, look for a marker at | |
13506 | the old PC. If one is found there, assume to be the same marker. | |
13507 | If the name / string id of the marker found is different from the | |
13508 | previous known name, assume that means the user renamed the marker | |
13509 | in the sources, and output a warning. | |
13510 | ||
13511 | 2) For a tracepoint set at a given line number, look for a marker | |
13512 | at the new address of the old line number. If one is found there, | |
13513 | assume to be the same marker. If the name / string id of the | |
13514 | marker found is different from the previous known name, assume that | |
13515 | means the user renamed the marker in the sources, and output a | |
13516 | warning. | |
13517 | ||
13518 | 3) If a marker is no longer found at the same address or line, it | |
13519 | may mean the marker no longer exists. But it may also just mean | |
13520 | the code changed a bit. Maybe the user added a few lines of code | |
13521 | that made the marker move up or down (in line number terms). Ask | |
13522 | the target for info about the marker with the string id as we knew | |
13523 | it. If found, update line number and address in the matching | |
13524 | static tracepoint. This will get confused if there's more than one | |
13525 | marker with the same ID (possible in UST, although unadvised | |
13526 | precisely because it confuses tools). */ | |
13527 | ||
13528 | static struct symtab_and_line | |
13529 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13530 | { | |
d9b3f62e | 13531 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13532 | struct static_tracepoint_marker marker; |
13533 | CORE_ADDR pc; | |
0fb4aa4b PA |
13534 | |
13535 | pc = sal.pc; | |
13536 | if (sal.line) | |
13537 | find_line_pc (sal.symtab, sal.line, &pc); | |
13538 | ||
13539 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13540 | { | |
5d9310c4 | 13541 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13542 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13543 | b->number, tp->static_trace_marker_id.c_str (), |
13544 | marker.str_id.c_str ()); | |
0fb4aa4b | 13545 | |
5d9310c4 | 13546 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13547 | |
13548 | return sal; | |
13549 | } | |
13550 | ||
13551 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13552 | by string ID. */ | |
13553 | if (!sal.explicit_pc | |
13554 | && sal.line != 0 | |
13555 | && sal.symtab != NULL | |
5d9310c4 | 13556 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13557 | { |
5d9310c4 SM |
13558 | std::vector<static_tracepoint_marker> markers |
13559 | = target_static_tracepoint_markers_by_strid | |
13560 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13561 | |
5d9310c4 | 13562 | if (!markers.empty ()) |
0fb4aa4b | 13563 | { |
0fb4aa4b | 13564 | struct symbol *sym; |
80e1d417 | 13565 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13566 | struct ui_out *uiout = current_uiout; |
67994074 | 13567 | struct explicit_location explicit_loc; |
0fb4aa4b | 13568 | |
5d9310c4 | 13569 | tpmarker = &markers[0]; |
0fb4aa4b | 13570 | |
5d9310c4 | 13571 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13572 | |
13573 | warning (_("marker for static tracepoint %d (%s) not " | |
13574 | "found at previous line number"), | |
5d9310c4 | 13575 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13576 | |
51abb421 | 13577 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13578 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13579 | uiout->text ("Now in "); |
0fb4aa4b PA |
13580 | if (sym) |
13581 | { | |
987012b8 | 13582 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 13583 | function_name_style.style ()); |
112e8700 | 13584 | uiout->text (" at "); |
0fb4aa4b | 13585 | } |
112e8700 | 13586 | uiout->field_string ("file", |
cbe56571 | 13587 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 13588 | file_name_style.style ()); |
112e8700 | 13589 | uiout->text (":"); |
0fb4aa4b | 13590 | |
112e8700 | 13591 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13592 | { |
0b0865da | 13593 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13594 | |
112e8700 | 13595 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13596 | } |
13597 | ||
381befee | 13598 | uiout->field_signed ("line", sal2.line); |
112e8700 | 13599 | uiout->text ("\n"); |
0fb4aa4b | 13600 | |
80e1d417 | 13601 | b->loc->line_number = sal2.line; |
2f202fde | 13602 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13603 | |
d28cd78a | 13604 | b->location.reset (NULL); |
67994074 KS |
13605 | initialize_explicit_location (&explicit_loc); |
13606 | explicit_loc.source_filename | |
00e52e53 | 13607 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13608 | explicit_loc.line_offset.offset = b->loc->line_number; |
13609 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13610 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13611 | |
13612 | /* Might be nice to check if function changed, and warn if | |
13613 | so. */ | |
0fb4aa4b PA |
13614 | } |
13615 | } | |
13616 | return sal; | |
13617 | } | |
13618 | ||
8d3788bd VP |
13619 | /* Returns 1 iff locations A and B are sufficiently same that |
13620 | we don't need to report breakpoint as changed. */ | |
13621 | ||
13622 | static int | |
13623 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13624 | { | |
13625 | while (a && b) | |
13626 | { | |
13627 | if (a->address != b->address) | |
13628 | return 0; | |
13629 | ||
13630 | if (a->shlib_disabled != b->shlib_disabled) | |
13631 | return 0; | |
13632 | ||
13633 | if (a->enabled != b->enabled) | |
13634 | return 0; | |
13635 | ||
b5fa468f TBA |
13636 | if (a->disabled_by_cond != b->disabled_by_cond) |
13637 | return 0; | |
13638 | ||
8d3788bd VP |
13639 | a = a->next; |
13640 | b = b->next; | |
13641 | } | |
13642 | ||
13643 | if ((a == NULL) != (b == NULL)) | |
13644 | return 0; | |
13645 | ||
13646 | return 1; | |
13647 | } | |
13648 | ||
c2f4122d PA |
13649 | /* Split all locations of B that are bound to PSPACE out of B's |
13650 | location list to a separate list and return that list's head. If | |
13651 | PSPACE is NULL, hoist out all locations of B. */ | |
13652 | ||
13653 | static struct bp_location * | |
13654 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13655 | { | |
13656 | struct bp_location head; | |
13657 | struct bp_location *i = b->loc; | |
13658 | struct bp_location **i_link = &b->loc; | |
13659 | struct bp_location *hoisted = &head; | |
13660 | ||
13661 | if (pspace == NULL) | |
13662 | { | |
13663 | i = b->loc; | |
13664 | b->loc = NULL; | |
13665 | return i; | |
13666 | } | |
13667 | ||
13668 | head.next = NULL; | |
13669 | ||
13670 | while (i != NULL) | |
13671 | { | |
13672 | if (i->pspace == pspace) | |
13673 | { | |
13674 | *i_link = i->next; | |
13675 | i->next = NULL; | |
13676 | hoisted->next = i; | |
13677 | hoisted = i; | |
13678 | } | |
13679 | else | |
13680 | i_link = &i->next; | |
13681 | i = *i_link; | |
13682 | } | |
13683 | ||
13684 | return head.next; | |
13685 | } | |
13686 | ||
13687 | /* Create new breakpoint locations for B (a hardware or software | |
13688 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13689 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13690 | FILTER_PSPACE. Locations of other program spaces are left | |
13691 | untouched. */ | |
f1310107 | 13692 | |
0e30163f | 13693 | void |
0d381245 | 13694 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13695 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13696 | gdb::array_view<const symtab_and_line> sals, |
13697 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13698 | { |
c2f4122d | 13699 | struct bp_location *existing_locations; |
0d381245 | 13700 | |
6c5b2ebe | 13701 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13702 | { |
13703 | /* Ranged breakpoints have only one start location and one end | |
13704 | location. */ | |
13705 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13706 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13707 | "multiple locations found\n"), | |
13708 | b->number); | |
13709 | return; | |
13710 | } | |
f1310107 | 13711 | |
4a64f543 MS |
13712 | /* If there's no new locations, and all existing locations are |
13713 | pending, don't do anything. This optimizes the common case where | |
13714 | all locations are in the same shared library, that was unloaded. | |
13715 | We'd like to retain the location, so that when the library is | |
13716 | loaded again, we don't loose the enabled/disabled status of the | |
13717 | individual locations. */ | |
6c5b2ebe | 13718 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13719 | return; |
13720 | ||
c2f4122d | 13721 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13722 | |
6c5b2ebe | 13723 | for (const auto &sal : sals) |
fe3f5fa8 | 13724 | { |
f8eba3c6 TT |
13725 | struct bp_location *new_loc; |
13726 | ||
6c5b2ebe | 13727 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13728 | |
6c5b2ebe | 13729 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13730 | |
0d381245 VP |
13731 | /* Reparse conditions, they might contain references to the |
13732 | old symtab. */ | |
13733 | if (b->cond_string != NULL) | |
13734 | { | |
bbc13ae3 | 13735 | const char *s; |
fe3f5fa8 | 13736 | |
0d381245 | 13737 | s = b->cond_string; |
a70b8144 | 13738 | try |
0d381245 | 13739 | { |
6c5b2ebe PA |
13740 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13741 | block_for_pc (sal.pc), | |
0d381245 VP |
13742 | 0); |
13743 | } | |
230d2906 | 13744 | catch (const gdb_exception_error &e) |
0d381245 | 13745 | { |
b5fa468f | 13746 | new_loc->disabled_by_cond = true; |
0d381245 VP |
13747 | } |
13748 | } | |
fe3f5fa8 | 13749 | |
6c5b2ebe | 13750 | if (!sals_end.empty ()) |
f1310107 | 13751 | { |
6c5b2ebe | 13752 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13753 | |
6c5b2ebe | 13754 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13755 | } |
0d381245 | 13756 | } |
fe3f5fa8 | 13757 | |
4a64f543 MS |
13758 | /* If possible, carry over 'disable' status from existing |
13759 | breakpoints. */ | |
0d381245 VP |
13760 | { |
13761 | struct bp_location *e = existing_locations; | |
776592bf DE |
13762 | /* If there are multiple breakpoints with the same function name, |
13763 | e.g. for inline functions, comparing function names won't work. | |
13764 | Instead compare pc addresses; this is just a heuristic as things | |
13765 | may have moved, but in practice it gives the correct answer | |
13766 | often enough until a better solution is found. */ | |
13767 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13768 | ||
0d381245 VP |
13769 | for (; e; e = e->next) |
13770 | { | |
b5fa468f | 13771 | if ((!e->enabled || e->disabled_by_cond) && e->function_name) |
0d381245 VP |
13772 | { |
13773 | struct bp_location *l = b->loc; | |
776592bf DE |
13774 | if (have_ambiguous_names) |
13775 | { | |
13776 | for (; l; l = l->next) | |
7f32a4d5 PA |
13777 | { |
13778 | /* Ignore software vs hardware location type at | |
13779 | this point, because with "set breakpoint | |
13780 | auto-hw", after a re-set, locations that were | |
13781 | hardware can end up as software, or vice versa. | |
13782 | As mentioned above, this is an heuristic and in | |
13783 | practice should give the correct answer often | |
13784 | enough. */ | |
13785 | if (breakpoint_locations_match (e, l, true)) | |
13786 | { | |
b5fa468f TBA |
13787 | l->enabled = e->enabled; |
13788 | l->disabled_by_cond = e->disabled_by_cond; | |
7f32a4d5 PA |
13789 | break; |
13790 | } | |
13791 | } | |
776592bf DE |
13792 | } |
13793 | else | |
13794 | { | |
13795 | for (; l; l = l->next) | |
13796 | if (l->function_name | |
13797 | && strcmp (e->function_name, l->function_name) == 0) | |
13798 | { | |
b5fa468f TBA |
13799 | l->enabled = e->enabled; |
13800 | l->disabled_by_cond = e->disabled_by_cond; | |
776592bf DE |
13801 | break; |
13802 | } | |
13803 | } | |
0d381245 VP |
13804 | } |
13805 | } | |
13806 | } | |
fe3f5fa8 | 13807 | |
8d3788bd | 13808 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13809 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13810 | } |
13811 | ||
f00aae0f | 13812 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13813 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13814 | ||
6c5b2ebe | 13815 | static std::vector<symtab_and_line> |
f00aae0f | 13816 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13817 | struct program_space *search_pspace, int *found) |
ef23e705 | 13818 | { |
cc06b668 | 13819 | struct gdb_exception exception; |
ef23e705 | 13820 | |
983af33b | 13821 | gdb_assert (b->ops != NULL); |
ef23e705 | 13822 | |
6c5b2ebe PA |
13823 | std::vector<symtab_and_line> sals; |
13824 | ||
a70b8144 | 13825 | try |
ef23e705 | 13826 | { |
6c5b2ebe | 13827 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13828 | } |
94aeb44b | 13829 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13830 | { |
13831 | int not_found_and_ok = 0; | |
492d29ea | 13832 | |
ef23e705 TJB |
13833 | /* For pending breakpoints, it's expected that parsing will |
13834 | fail until the right shared library is loaded. User has | |
13835 | already told to create pending breakpoints and don't need | |
13836 | extra messages. If breakpoint is in bp_shlib_disabled | |
13837 | state, then user already saw the message about that | |
13838 | breakpoint being disabled, and don't want to see more | |
13839 | errors. */ | |
58438ac1 | 13840 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13841 | && (b->condition_not_parsed |
13842 | || (b->loc != NULL | |
13843 | && search_pspace != NULL | |
13844 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13845 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13846 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13847 | || b->enable_state == bp_disabled)) |
13848 | not_found_and_ok = 1; | |
13849 | ||
13850 | if (!not_found_and_ok) | |
13851 | { | |
13852 | /* We surely don't want to warn about the same breakpoint | |
13853 | 10 times. One solution, implemented here, is disable | |
13854 | the breakpoint on error. Another solution would be to | |
13855 | have separate 'warning emitted' flag. Since this | |
13856 | happens only when a binary has changed, I don't know | |
13857 | which approach is better. */ | |
13858 | b->enable_state = bp_disabled; | |
eedc3f4f | 13859 | throw; |
ef23e705 | 13860 | } |
94aeb44b TT |
13861 | |
13862 | exception = std::move (e); | |
ef23e705 TJB |
13863 | } |
13864 | ||
492d29ea | 13865 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13866 | { |
6c5b2ebe PA |
13867 | for (auto &sal : sals) |
13868 | resolve_sal_pc (&sal); | |
f00aae0f | 13869 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13870 | { |
ed1d1739 KS |
13871 | char *cond_string, *extra_string; |
13872 | int thread, task; | |
ef23e705 | 13873 | |
b5fa468f TBA |
13874 | find_condition_and_thread_for_sals (sals, b->extra_string, |
13875 | &cond_string, &thread, | |
13876 | &task, &extra_string); | |
f00aae0f | 13877 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13878 | if (cond_string) |
13879 | b->cond_string = cond_string; | |
13880 | b->thread = thread; | |
13881 | b->task = task; | |
e7e0cddf | 13882 | if (extra_string) |
f00aae0f KS |
13883 | { |
13884 | xfree (b->extra_string); | |
13885 | b->extra_string = extra_string; | |
13886 | } | |
ef23e705 TJB |
13887 | b->condition_not_parsed = 0; |
13888 | } | |
13889 | ||
983af33b | 13890 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13891 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13892 | |
58438ac1 TT |
13893 | *found = 1; |
13894 | } | |
13895 | else | |
13896 | *found = 0; | |
ef23e705 TJB |
13897 | |
13898 | return sals; | |
13899 | } | |
13900 | ||
348d480f PA |
13901 | /* The default re_set method, for typical hardware or software |
13902 | breakpoints. Reevaluate the breakpoint and recreate its | |
13903 | locations. */ | |
13904 | ||
13905 | static void | |
28010a5d | 13906 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13907 | { |
c2f4122d | 13908 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13909 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13910 | |
6c5b2ebe PA |
13911 | int found; |
13912 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13913 | filter_pspace, &found); | |
ef23e705 | 13914 | if (found) |
6c5b2ebe | 13915 | expanded = std::move (sals); |
ef23e705 | 13916 | |
f00aae0f | 13917 | if (b->location_range_end != NULL) |
f1310107 | 13918 | { |
6c5b2ebe PA |
13919 | std::vector<symtab_and_line> sals_end |
13920 | = location_to_sals (b, b->location_range_end.get (), | |
13921 | filter_pspace, &found); | |
f1310107 | 13922 | if (found) |
6c5b2ebe | 13923 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13924 | } |
13925 | ||
c2f4122d | 13926 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13927 | } |
13928 | ||
983af33b SDJ |
13929 | /* Default method for creating SALs from an address string. It basically |
13930 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13931 | ||
13932 | static void | |
626d2320 | 13933 | create_sals_from_location_default (struct event_location *location, |
f00aae0f KS |
13934 | struct linespec_result *canonical, |
13935 | enum bptype type_wanted) | |
983af33b | 13936 | { |
f00aae0f | 13937 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13938 | } |
13939 | ||
13940 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13941 | function for the `create_breakpoints_sal' method of | |
13942 | breakpoint_ops. */ | |
13943 | ||
13944 | static void | |
13945 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13946 | struct linespec_result *canonical, | |
e1e01040 PA |
13947 | gdb::unique_xmalloc_ptr<char> cond_string, |
13948 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13949 | enum bptype type_wanted, |
13950 | enum bpdisp disposition, | |
13951 | int thread, | |
13952 | int task, int ignore_count, | |
13953 | const struct breakpoint_ops *ops, | |
13954 | int from_tty, int enabled, | |
44f238bb | 13955 | int internal, unsigned flags) |
983af33b | 13956 | { |
e1e01040 PA |
13957 | create_breakpoints_sal (gdbarch, canonical, |
13958 | std::move (cond_string), | |
13959 | std::move (extra_string), | |
983af33b SDJ |
13960 | type_wanted, disposition, |
13961 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13962 | enabled, internal, flags); |
983af33b SDJ |
13963 | } |
13964 | ||
13965 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13966 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13967 | |
6c5b2ebe | 13968 | static std::vector<symtab_and_line> |
f00aae0f | 13969 | decode_location_default (struct breakpoint *b, |
626d2320 | 13970 | struct event_location *location, |
6c5b2ebe | 13971 | struct program_space *search_pspace) |
983af33b SDJ |
13972 | { |
13973 | struct linespec_result canonical; | |
13974 | ||
c2f4122d | 13975 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13976 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 13977 | b->filter.get ()); |
983af33b SDJ |
13978 | |
13979 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13980 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13981 | |
6c5b2ebe | 13982 | if (!canonical.lsals.empty ()) |
983af33b | 13983 | { |
6c5b2ebe PA |
13984 | const linespec_sals &lsal = canonical.lsals[0]; |
13985 | return std::move (lsal.sals); | |
983af33b | 13986 | } |
6c5b2ebe | 13987 | return {}; |
983af33b SDJ |
13988 | } |
13989 | ||
bf469271 | 13990 | /* Reset a breakpoint. */ |
c906108c | 13991 | |
bf469271 PA |
13992 | static void |
13993 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13994 | { |
fdf44873 TT |
13995 | input_radix = b->input_radix; |
13996 | set_language (b->language); | |
c906108c | 13997 | |
348d480f | 13998 | b->ops->re_set (b); |
c906108c SS |
13999 | } |
14000 | ||
c2f4122d PA |
14001 | /* Re-set breakpoint locations for the current program space. |
14002 | Locations bound to other program spaces are left untouched. */ | |
14003 | ||
c906108c | 14004 | void |
69de3c6a | 14005 | breakpoint_re_set (void) |
c906108c | 14006 | { |
35df4500 | 14007 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 14008 | |
c5aa993b | 14009 | { |
fdf44873 TT |
14010 | scoped_restore_current_language save_language; |
14011 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 14012 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 14013 | |
8e817061 JB |
14014 | /* breakpoint_re_set_one sets the current_language to the language |
14015 | of the breakpoint it is resetting (see prepare_re_set_context) | |
14016 | before re-evaluating the breakpoint's location. This change can | |
14017 | unfortunately get undone by accident if the language_mode is set | |
14018 | to auto, and we either switch frames, or more likely in this context, | |
14019 | we select the current frame. | |
14020 | ||
14021 | We prevent this by temporarily turning the language_mode to | |
14022 | language_mode_manual. We restore it once all breakpoints | |
14023 | have been reset. */ | |
14024 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
14025 | language_mode = language_mode_manual; | |
14026 | ||
5ed8105e PA |
14027 | /* Note: we must not try to insert locations until after all |
14028 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
14029 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
14030 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 14031 | |
5ed8105e PA |
14032 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
14033 | { | |
a70b8144 | 14034 | try |
bf469271 PA |
14035 | { |
14036 | breakpoint_re_set_one (b); | |
14037 | } | |
230d2906 | 14038 | catch (const gdb_exception &ex) |
bf469271 PA |
14039 | { |
14040 | exception_fprintf (gdb_stderr, ex, | |
14041 | "Error in re-setting breakpoint %d: ", | |
14042 | b->number); | |
14043 | } | |
5ed8105e | 14044 | } |
5ed8105e PA |
14045 | |
14046 | jit_breakpoint_re_set (); | |
14047 | } | |
6c95b8df | 14048 | |
af02033e PP |
14049 | create_overlay_event_breakpoint (); |
14050 | create_longjmp_master_breakpoint (); | |
14051 | create_std_terminate_master_breakpoint (); | |
186c406b | 14052 | create_exception_master_breakpoint (); |
2a7f3dff PA |
14053 | |
14054 | /* Now we can insert. */ | |
14055 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
14056 | } |
14057 | \f | |
c906108c SS |
14058 | /* Reset the thread number of this breakpoint: |
14059 | ||
14060 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14061 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14062 | void |
fba45db2 | 14063 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14064 | { |
14065 | if (b->thread != -1) | |
14066 | { | |
00431a78 | 14067 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
14068 | |
14069 | /* We're being called after following a fork. The new fork is | |
14070 | selected as current, and unless this was a vfork will have a | |
14071 | different program space from the original thread. Reset that | |
14072 | as well. */ | |
14073 | b->loc->pspace = current_program_space; | |
c906108c SS |
14074 | } |
14075 | } | |
14076 | ||
03ac34d5 MS |
14077 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14078 | If from_tty is nonzero, it prints a message to that effect, | |
14079 | which ends with a period (no newline). */ | |
14080 | ||
c906108c | 14081 | void |
fba45db2 | 14082 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14083 | { |
52f0bd74 | 14084 | struct breakpoint *b; |
c906108c SS |
14085 | |
14086 | if (count < 0) | |
14087 | count = 0; | |
14088 | ||
14089 | ALL_BREAKPOINTS (b) | |
14090 | if (b->number == bptnum) | |
c5aa993b | 14091 | { |
d77f58be SS |
14092 | if (is_tracepoint (b)) |
14093 | { | |
14094 | if (from_tty && count != 0) | |
14095 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14096 | bptnum); | |
14097 | return; | |
14098 | } | |
14099 | ||
c5aa993b | 14100 | b->ignore_count = count; |
221ea385 KS |
14101 | if (from_tty) |
14102 | { | |
14103 | if (count == 0) | |
3e43a32a MS |
14104 | printf_filtered (_("Will stop next time " |
14105 | "breakpoint %d is reached."), | |
221ea385 KS |
14106 | bptnum); |
14107 | else if (count == 1) | |
a3f17187 | 14108 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14109 | bptnum); |
14110 | else | |
3e43a32a MS |
14111 | printf_filtered (_("Will ignore next %d " |
14112 | "crossings of breakpoint %d."), | |
221ea385 KS |
14113 | count, bptnum); |
14114 | } | |
76727919 | 14115 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
14116 | return; |
14117 | } | |
c906108c | 14118 | |
8a3fe4f8 | 14119 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14120 | } |
14121 | ||
c906108c SS |
14122 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14123 | ||
14124 | static void | |
0b39b52e | 14125 | ignore_command (const char *args, int from_tty) |
c906108c | 14126 | { |
0b39b52e | 14127 | const char *p = args; |
52f0bd74 | 14128 | int num; |
c906108c SS |
14129 | |
14130 | if (p == 0) | |
e2e0b3e5 | 14131 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14132 | |
c906108c | 14133 | num = get_number (&p); |
5c44784c | 14134 | if (num == 0) |
8a3fe4f8 | 14135 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14136 | if (*p == 0) |
8a3fe4f8 | 14137 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14138 | |
14139 | set_ignore_count (num, | |
14140 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14141 | from_tty); | |
221ea385 KS |
14142 | if (from_tty) |
14143 | printf_filtered ("\n"); | |
c906108c SS |
14144 | } |
14145 | \f | |
d0fe4701 XR |
14146 | |
14147 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
14148 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
14149 | |
14150 | static void | |
d0fe4701 XR |
14151 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
14152 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 14153 | { |
d0fe4701 XR |
14154 | if (bp_num_range.first == 0) |
14155 | { | |
14156 | warning (_("bad breakpoint number at or near '%d'"), | |
14157 | bp_num_range.first); | |
14158 | } | |
14159 | else | |
c906108c | 14160 | { |
d0fe4701 | 14161 | struct breakpoint *b, *tmp; |
197f0a60 | 14162 | |
d0fe4701 | 14163 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 14164 | { |
d0fe4701 XR |
14165 | bool match = false; |
14166 | ||
5c44784c | 14167 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 14168 | if (b->number == i) |
5c44784c | 14169 | { |
bfd28288 | 14170 | match = true; |
48649e1b | 14171 | function (b); |
11cf8741 | 14172 | break; |
5c44784c | 14173 | } |
bfd28288 | 14174 | if (!match) |
d0fe4701 | 14175 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 14176 | } |
c906108c SS |
14177 | } |
14178 | } | |
14179 | ||
d0fe4701 XR |
14180 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
14181 | ARGS. */ | |
14182 | ||
14183 | static void | |
14184 | map_breakpoint_numbers (const char *args, | |
14185 | gdb::function_view<void (breakpoint *)> function) | |
14186 | { | |
14187 | if (args == NULL || *args == '\0') | |
14188 | error_no_arg (_("one or more breakpoint numbers")); | |
14189 | ||
14190 | number_or_range_parser parser (args); | |
14191 | ||
14192 | while (!parser.finished ()) | |
14193 | { | |
14194 | int num = parser.get_number (); | |
14195 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
14196 | } | |
14197 | } | |
14198 | ||
14199 | /* Return the breakpoint location structure corresponding to the | |
14200 | BP_NUM and LOC_NUM values. */ | |
14201 | ||
0d381245 | 14202 | static struct bp_location * |
d0fe4701 | 14203 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 14204 | { |
0d381245 | 14205 | struct breakpoint *b; |
0d381245 VP |
14206 | |
14207 | ALL_BREAKPOINTS (b) | |
14208 | if (b->number == bp_num) | |
14209 | { | |
14210 | break; | |
14211 | } | |
14212 | ||
14213 | if (!b || b->number != bp_num) | |
d0fe4701 | 14214 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 14215 | |
0d381245 | 14216 | if (loc_num == 0) |
d0fe4701 | 14217 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 14218 | |
d0fe4701 XR |
14219 | int n = 0; |
14220 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
14221 | if (++n == loc_num) | |
14222 | return loc; | |
14223 | ||
14224 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
14225 | } |
14226 | ||
95e95a6d PA |
14227 | /* Modes of operation for extract_bp_num. */ |
14228 | enum class extract_bp_kind | |
14229 | { | |
14230 | /* Extracting a breakpoint number. */ | |
14231 | bp, | |
14232 | ||
14233 | /* Extracting a location number. */ | |
14234 | loc, | |
14235 | }; | |
14236 | ||
14237 | /* Extract a breakpoint or location number (as determined by KIND) | |
14238 | from the string starting at START. TRAILER is a character which | |
14239 | can be found after the number. If you don't want a trailer, use | |
14240 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14241 | string. This always returns a positive integer. */ | |
14242 | ||
14243 | static int | |
14244 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14245 | int trailer, const char **end_out = NULL) | |
14246 | { | |
14247 | const char *end = start; | |
14248 | int num = get_number_trailer (&end, trailer); | |
14249 | if (num < 0) | |
14250 | error (kind == extract_bp_kind::bp | |
14251 | ? _("Negative breakpoint number '%.*s'") | |
14252 | : _("Negative breakpoint location number '%.*s'"), | |
14253 | int (end - start), start); | |
14254 | if (num == 0) | |
14255 | error (kind == extract_bp_kind::bp | |
14256 | ? _("Bad breakpoint number '%.*s'") | |
14257 | : _("Bad breakpoint location number '%.*s'"), | |
14258 | int (end - start), start); | |
14259 | ||
14260 | if (end_out != NULL) | |
14261 | *end_out = end; | |
14262 | return num; | |
14263 | } | |
14264 | ||
14265 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14266 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14267 | representing the (inclusive) range. The returned pair's elements | |
14268 | are always positive integers. */ | |
14269 | ||
14270 | static std::pair<int, int> | |
14271 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14272 | const std::string &arg, | |
14273 | std::string::size_type arg_offset) | |
14274 | { | |
14275 | std::pair<int, int> range; | |
14276 | const char *bp_loc = &arg[arg_offset]; | |
14277 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14278 | if (dash != std::string::npos) | |
14279 | { | |
14280 | /* bp_loc is a range (x-z). */ | |
14281 | if (arg.length () == dash + 1) | |
14282 | error (kind == extract_bp_kind::bp | |
14283 | ? _("Bad breakpoint number at or near: '%s'") | |
14284 | : _("Bad breakpoint location number at or near: '%s'"), | |
14285 | bp_loc); | |
14286 | ||
14287 | const char *end; | |
14288 | const char *start_first = bp_loc; | |
14289 | const char *start_second = &arg[dash + 1]; | |
14290 | range.first = extract_bp_num (kind, start_first, '-'); | |
14291 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14292 | ||
14293 | if (range.first > range.second) | |
14294 | error (kind == extract_bp_kind::bp | |
14295 | ? _("Inverted breakpoint range at '%.*s'") | |
14296 | : _("Inverted breakpoint location range at '%.*s'"), | |
14297 | int (end - start_first), start_first); | |
14298 | } | |
14299 | else | |
14300 | { | |
14301 | /* bp_loc is a single value. */ | |
14302 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14303 | range.second = range.first; | |
14304 | } | |
14305 | return range; | |
14306 | } | |
14307 | ||
d0fe4701 XR |
14308 | /* Extract the breakpoint/location range specified by ARG. Returns |
14309 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14310 | BP_LOC_RANGE. | |
14311 | ||
14312 | ARG may be in any of the following forms: | |
14313 | ||
14314 | x where 'x' is a breakpoint number. | |
14315 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14316 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14317 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14318 | location number range. | |
14319 | */ | |
14320 | ||
cc638e86 | 14321 | static void |
d0fe4701 XR |
14322 | extract_bp_number_and_location (const std::string &arg, |
14323 | std::pair<int, int> &bp_num_range, | |
14324 | std::pair<int, int> &bp_loc_range) | |
14325 | { | |
14326 | std::string::size_type dot = arg.find ('.'); | |
14327 | ||
14328 | if (dot != std::string::npos) | |
14329 | { | |
14330 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14331 | ||
14332 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14333 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14334 | |
95e95a6d PA |
14335 | bp_num_range.first |
14336 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14337 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14338 | |
95e95a6d PA |
14339 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14340 | arg, dot + 1); | |
d0fe4701 XR |
14341 | } |
14342 | else | |
14343 | { | |
14344 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14345 | |
95e95a6d | 14346 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14347 | bp_loc_range.first = 0; |
14348 | bp_loc_range.second = 0; | |
14349 | } | |
d0fe4701 XR |
14350 | } |
14351 | ||
14352 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14353 | specifies whether to enable or disable. */ | |
14354 | ||
14355 | static void | |
14356 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14357 | { | |
14358 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14359 | if (loc != NULL) | |
14360 | { | |
b5fa468f TBA |
14361 | if (loc->disabled_by_cond && enable) |
14362 | error (_("Breakpoint %d's condition is invalid at location %d, " | |
14363 | "cannot enable."), bp_num, loc_num); | |
14364 | ||
d0fe4701 XR |
14365 | if (loc->enabled != enable) |
14366 | { | |
14367 | loc->enabled = enable; | |
14368 | mark_breakpoint_location_modified (loc); | |
14369 | } | |
14370 | if (target_supports_enable_disable_tracepoint () | |
14371 | && current_trace_status ()->running && loc->owner | |
14372 | && is_tracepoint (loc->owner)) | |
14373 | target_disable_tracepoint (loc); | |
14374 | } | |
14375 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14376 | |
14377 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14378 | } |
14379 | ||
14380 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14381 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14382 | (inclusive) range of location numbers of that breakpoint to | |
14383 | enable/disable. ENABLE specifies whether to enable or disable the | |
14384 | location. */ | |
14385 | ||
14386 | static void | |
14387 | enable_disable_breakpoint_location_range (int bp_num, | |
14388 | std::pair<int, int> &bp_loc_range, | |
14389 | bool enable) | |
14390 | { | |
14391 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14392 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14393 | } | |
0d381245 | 14394 | |
1900040c MS |
14395 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14396 | If from_tty is nonzero, it prints a message to that effect, | |
14397 | which ends with a period (no newline). */ | |
14398 | ||
c906108c | 14399 | void |
fba45db2 | 14400 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14401 | { |
14402 | /* Never disable a watchpoint scope breakpoint; we want to | |
14403 | hit them when we leave scope so we can delete both the | |
14404 | watchpoint and its scope breakpoint at that time. */ | |
14405 | if (bpt->type == bp_watchpoint_scope) | |
14406 | return; | |
14407 | ||
b5de0fa7 | 14408 | bpt->enable_state = bp_disabled; |
c906108c | 14409 | |
b775012e LM |
14410 | /* Mark breakpoint locations modified. */ |
14411 | mark_breakpoint_modified (bpt); | |
14412 | ||
d248b706 KY |
14413 | if (target_supports_enable_disable_tracepoint () |
14414 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14415 | { | |
14416 | struct bp_location *location; | |
14417 | ||
14418 | for (location = bpt->loc; location; location = location->next) | |
14419 | target_disable_tracepoint (location); | |
14420 | } | |
14421 | ||
44702360 | 14422 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14423 | |
76727919 | 14424 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14425 | } |
14426 | ||
d0fe4701 XR |
14427 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14428 | specified in ARGS. ARGS may be in any of the formats handled by | |
14429 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14430 | or disable the breakpoints/locations. */ | |
14431 | ||
c906108c | 14432 | static void |
d0fe4701 | 14433 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14434 | { |
c906108c | 14435 | if (args == 0) |
46c6471b PA |
14436 | { |
14437 | struct breakpoint *bpt; | |
14438 | ||
14439 | ALL_BREAKPOINTS (bpt) | |
14440 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14441 | { |
14442 | if (enable) | |
14443 | enable_breakpoint (bpt); | |
14444 | else | |
14445 | disable_breakpoint (bpt); | |
14446 | } | |
46c6471b | 14447 | } |
9eaabc75 | 14448 | else |
0d381245 | 14449 | { |
cb791d59 | 14450 | std::string num = extract_arg (&args); |
9eaabc75 | 14451 | |
cb791d59 | 14452 | while (!num.empty ()) |
d248b706 | 14453 | { |
d0fe4701 | 14454 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14455 | |
cc638e86 PA |
14456 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14457 | ||
14458 | if (bp_loc_range.first == bp_loc_range.second | |
14459 | && bp_loc_range.first == 0) | |
d0fe4701 | 14460 | { |
cc638e86 PA |
14461 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14462 | map_breakpoint_number_range (bp_num_range, | |
14463 | enable | |
14464 | ? enable_breakpoint | |
14465 | : disable_breakpoint); | |
14466 | } | |
14467 | else | |
14468 | { | |
14469 | /* Handle breakpoint ids with formats 'x.y' or | |
14470 | 'x.y-z'. */ | |
14471 | enable_disable_breakpoint_location_range | |
14472 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14473 | } |
9eaabc75 | 14474 | num = extract_arg (&args); |
d248b706 | 14475 | } |
0d381245 | 14476 | } |
c906108c SS |
14477 | } |
14478 | ||
d0fe4701 XR |
14479 | /* The disable command disables the specified breakpoints/locations |
14480 | (or all defined breakpoints) so they're no longer effective in | |
14481 | stopping the inferior. ARGS may be in any of the forms defined in | |
14482 | extract_bp_number_and_location. */ | |
14483 | ||
14484 | static void | |
14485 | disable_command (const char *args, int from_tty) | |
14486 | { | |
14487 | enable_disable_command (args, from_tty, false); | |
14488 | } | |
14489 | ||
c906108c | 14490 | static void |
816338b5 SS |
14491 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14492 | int count) | |
c906108c | 14493 | { |
afe38095 | 14494 | int target_resources_ok; |
c906108c SS |
14495 | |
14496 | if (bpt->type == bp_hardware_breakpoint) | |
14497 | { | |
14498 | int i; | |
c5aa993b | 14499 | i = hw_breakpoint_used_count (); |
53a5351d | 14500 | target_resources_ok = |
d92524f1 | 14501 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14502 | i + 1, 0); |
c906108c | 14503 | if (target_resources_ok == 0) |
8a3fe4f8 | 14504 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14505 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14506 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14507 | } |
14508 | ||
cc60f2e3 | 14509 | if (is_watchpoint (bpt)) |
c906108c | 14510 | { |
d07205c2 | 14511 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14512 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14513 | |
a70b8144 | 14514 | try |
c906108c | 14515 | { |
3a5c3e22 PA |
14516 | struct watchpoint *w = (struct watchpoint *) bpt; |
14517 | ||
1e718ff1 TJB |
14518 | orig_enable_state = bpt->enable_state; |
14519 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14520 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14521 | } |
230d2906 | 14522 | catch (const gdb_exception &e) |
c5aa993b | 14523 | { |
1e718ff1 | 14524 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14525 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14526 | bpt->number); | |
14527 | return; | |
c5aa993b | 14528 | } |
c906108c | 14529 | } |
0101ce28 | 14530 | |
b775012e LM |
14531 | bpt->enable_state = bp_enabled; |
14532 | ||
14533 | /* Mark breakpoint locations modified. */ | |
14534 | mark_breakpoint_modified (bpt); | |
14535 | ||
d248b706 KY |
14536 | if (target_supports_enable_disable_tracepoint () |
14537 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14538 | { | |
14539 | struct bp_location *location; | |
14540 | ||
14541 | for (location = bpt->loc; location; location = location->next) | |
14542 | target_enable_tracepoint (location); | |
14543 | } | |
14544 | ||
b4c291bb | 14545 | bpt->disposition = disposition; |
816338b5 | 14546 | bpt->enable_count = count; |
44702360 | 14547 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14548 | |
76727919 | 14549 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14550 | } |
14551 | ||
fe3f5fa8 | 14552 | |
c906108c | 14553 | void |
fba45db2 | 14554 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14555 | { |
816338b5 | 14556 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14557 | } |
14558 | ||
d0fe4701 XR |
14559 | /* The enable command enables the specified breakpoints/locations (or |
14560 | all defined breakpoints) so they once again become (or continue to | |
14561 | be) effective in stopping the inferior. ARGS may be in any of the | |
14562 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14563 | |
c906108c | 14564 | static void |
981a3fb3 | 14565 | enable_command (const char *args, int from_tty) |
c906108c | 14566 | { |
d0fe4701 | 14567 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14568 | } |
14569 | ||
c906108c | 14570 | static void |
4495129a | 14571 | enable_once_command (const char *args, int from_tty) |
c906108c | 14572 | { |
48649e1b TT |
14573 | map_breakpoint_numbers |
14574 | (args, [&] (breakpoint *b) | |
14575 | { | |
14576 | iterate_over_related_breakpoints | |
14577 | (b, [&] (breakpoint *bpt) | |
14578 | { | |
14579 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14580 | }); | |
14581 | }); | |
816338b5 SS |
14582 | } |
14583 | ||
14584 | static void | |
4495129a | 14585 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14586 | { |
b9d61307 SM |
14587 | int count; |
14588 | ||
14589 | if (args == NULL) | |
14590 | error_no_arg (_("hit count")); | |
14591 | ||
14592 | count = get_number (&args); | |
816338b5 | 14593 | |
48649e1b TT |
14594 | map_breakpoint_numbers |
14595 | (args, [&] (breakpoint *b) | |
14596 | { | |
14597 | iterate_over_related_breakpoints | |
14598 | (b, [&] (breakpoint *bpt) | |
14599 | { | |
14600 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14601 | }); | |
14602 | }); | |
c906108c SS |
14603 | } |
14604 | ||
c906108c | 14605 | static void |
4495129a | 14606 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14607 | { |
48649e1b TT |
14608 | map_breakpoint_numbers |
14609 | (args, [&] (breakpoint *b) | |
14610 | { | |
14611 | iterate_over_related_breakpoints | |
14612 | (b, [&] (breakpoint *bpt) | |
14613 | { | |
14614 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14615 | }); | |
14616 | }); | |
c906108c SS |
14617 | } |
14618 | \f | |
1f3b5d1b PP |
14619 | /* Invalidate last known value of any hardware watchpoint if |
14620 | the memory which that value represents has been written to by | |
14621 | GDB itself. */ | |
14622 | ||
14623 | static void | |
8de0566d YQ |
14624 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14625 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14626 | const bfd_byte *data) |
14627 | { | |
14628 | struct breakpoint *bp; | |
14629 | ||
14630 | ALL_BREAKPOINTS (bp) | |
14631 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14632 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14633 | { |
3a5c3e22 | 14634 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14635 | |
850645cf | 14636 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14637 | { |
14638 | struct bp_location *loc; | |
14639 | ||
14640 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14641 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14642 | && loc->address + loc->length > addr | |
14643 | && addr + len > loc->address) | |
14644 | { | |
3a5c3e22 | 14645 | wp->val = NULL; |
4c1d86d9 | 14646 | wp->val_valid = false; |
3a5c3e22 PA |
14647 | } |
14648 | } | |
1f3b5d1b PP |
14649 | } |
14650 | } | |
14651 | ||
8181d85f DJ |
14652 | /* Create and insert a breakpoint for software single step. */ |
14653 | ||
14654 | void | |
6c95b8df | 14655 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14656 | const address_space *aspace, |
4a64f543 | 14657 | CORE_ADDR next_pc) |
8181d85f | 14658 | { |
7c16b83e PA |
14659 | struct thread_info *tp = inferior_thread (); |
14660 | struct symtab_and_line sal; | |
14661 | CORE_ADDR pc = next_pc; | |
8181d85f | 14662 | |
34b7e8a6 PA |
14663 | if (tp->control.single_step_breakpoints == NULL) |
14664 | { | |
14665 | tp->control.single_step_breakpoints | |
5d5658a1 | 14666 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14667 | } |
8181d85f | 14668 | |
7c16b83e PA |
14669 | sal = find_pc_line (pc, 0); |
14670 | sal.pc = pc; | |
14671 | sal.section = find_pc_overlay (pc); | |
14672 | sal.explicit_pc = 1; | |
34b7e8a6 | 14673 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14674 | |
7c16b83e | 14675 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14676 | } |
14677 | ||
93f9a11f YQ |
14678 | /* Insert single step breakpoints according to the current state. */ |
14679 | ||
14680 | int | |
14681 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14682 | { | |
f5ea389a | 14683 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14684 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14685 | |
f5ea389a | 14686 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14687 | |
a0ff9e1a | 14688 | if (!next_pcs.empty ()) |
93f9a11f | 14689 | { |
f5ea389a | 14690 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14691 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14692 | |
a0ff9e1a | 14693 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14694 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14695 | ||
93f9a11f YQ |
14696 | return 1; |
14697 | } | |
14698 | else | |
14699 | return 0; | |
14700 | } | |
14701 | ||
34b7e8a6 | 14702 | /* See breakpoint.h. */ |
f02253f1 HZ |
14703 | |
14704 | int | |
7c16b83e | 14705 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14706 | const address_space *aspace, |
7c16b83e | 14707 | CORE_ADDR pc) |
1aafd4da | 14708 | { |
7c16b83e | 14709 | struct bp_location *loc; |
1aafd4da | 14710 | |
7c16b83e PA |
14711 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14712 | if (loc->inserted | |
14713 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14714 | return 1; | |
1aafd4da | 14715 | |
7c16b83e | 14716 | return 0; |
ef370185 JB |
14717 | } |
14718 | ||
14719 | /* Check whether a software single-step breakpoint is inserted at | |
14720 | PC. */ | |
14721 | ||
14722 | int | |
accd0bcd | 14723 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14724 | CORE_ADDR pc) |
14725 | { | |
34b7e8a6 PA |
14726 | struct breakpoint *bpt; |
14727 | ||
14728 | ALL_BREAKPOINTS (bpt) | |
14729 | { | |
14730 | if (bpt->type == bp_single_step | |
14731 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14732 | return 1; | |
14733 | } | |
14734 | return 0; | |
1aafd4da UW |
14735 | } |
14736 | ||
1042e4c0 SS |
14737 | /* Tracepoint-specific operations. */ |
14738 | ||
14739 | /* Set tracepoint count to NUM. */ | |
14740 | static void | |
14741 | set_tracepoint_count (int num) | |
14742 | { | |
14743 | tracepoint_count = num; | |
4fa62494 | 14744 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14745 | } |
14746 | ||
70221824 | 14747 | static void |
0b39b52e | 14748 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14749 | { |
ffc2605c TT |
14750 | event_location_up location = string_to_event_location (&arg, |
14751 | current_language); | |
bac7c5cf GB |
14752 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
14753 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 14754 | |
558a9d82 | 14755 | create_breakpoint (get_current_arch (), |
ffc2605c | 14756 | location.get (), |
f00aae0f | 14757 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14758 | 0 /* tempflag */, |
14759 | bp_tracepoint /* type_wanted */, | |
14760 | 0 /* Ignore count */, | |
14761 | pending_break_support, | |
14762 | ops, | |
14763 | from_tty, | |
14764 | 1 /* enabled */, | |
14765 | 0 /* internal */, 0); | |
1042e4c0 SS |
14766 | } |
14767 | ||
70221824 | 14768 | static void |
0b39b52e | 14769 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14770 | { |
ffc2605c TT |
14771 | event_location_up location = string_to_event_location (&arg, |
14772 | current_language); | |
558a9d82 | 14773 | create_breakpoint (get_current_arch (), |
ffc2605c | 14774 | location.get (), |
f00aae0f | 14775 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14776 | 0 /* tempflag */, |
14777 | bp_fast_tracepoint /* type_wanted */, | |
14778 | 0 /* Ignore count */, | |
14779 | pending_break_support, | |
14780 | &tracepoint_breakpoint_ops, | |
14781 | from_tty, | |
14782 | 1 /* enabled */, | |
14783 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14784 | } |
14785 | ||
14786 | /* strace command implementation. Creates a static tracepoint. */ | |
14787 | ||
70221824 | 14788 | static void |
0b39b52e | 14789 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14790 | { |
983af33b | 14791 | struct breakpoint_ops *ops; |
ffc2605c | 14792 | event_location_up location; |
983af33b SDJ |
14793 | |
14794 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14795 | or with a normal static tracepoint. */ | |
61012eef | 14796 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14797 | { |
14798 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14799 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14800 | } |
983af33b | 14801 | else |
f00aae0f KS |
14802 | { |
14803 | ops = &tracepoint_breakpoint_ops; | |
14804 | location = string_to_event_location (&arg, current_language); | |
14805 | } | |
983af33b | 14806 | |
558a9d82 | 14807 | create_breakpoint (get_current_arch (), |
ffc2605c | 14808 | location.get (), |
f00aae0f | 14809 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14810 | 0 /* tempflag */, |
14811 | bp_static_tracepoint /* type_wanted */, | |
14812 | 0 /* Ignore count */, | |
14813 | pending_break_support, | |
14814 | ops, | |
14815 | from_tty, | |
14816 | 1 /* enabled */, | |
14817 | 0 /* internal */, 0); | |
7a697b8d SS |
14818 | } |
14819 | ||
409873ef SS |
14820 | /* Set up a fake reader function that gets command lines from a linked |
14821 | list that was acquired during tracepoint uploading. */ | |
14822 | ||
14823 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14824 | static int next_cmd; |
409873ef SS |
14825 | |
14826 | static char * | |
14827 | read_uploaded_action (void) | |
14828 | { | |
a18ba4e4 | 14829 | char *rslt = nullptr; |
409873ef | 14830 | |
a18ba4e4 SM |
14831 | if (next_cmd < this_utp->cmd_strings.size ()) |
14832 | { | |
67aa1f3c | 14833 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14834 | next_cmd++; |
14835 | } | |
409873ef SS |
14836 | |
14837 | return rslt; | |
14838 | } | |
14839 | ||
00bf0b85 SS |
14840 | /* Given information about a tracepoint as recorded on a target (which |
14841 | can be either a live system or a trace file), attempt to create an | |
14842 | equivalent GDB tracepoint. This is not a reliable process, since | |
14843 | the target does not necessarily have all the information used when | |
14844 | the tracepoint was originally defined. */ | |
14845 | ||
d9b3f62e | 14846 | struct tracepoint * |
00bf0b85 | 14847 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14848 | { |
f2fc3015 TT |
14849 | const char *addr_str; |
14850 | char small_buf[100]; | |
d9b3f62e | 14851 | struct tracepoint *tp; |
fd9b8c24 | 14852 | |
409873ef | 14853 | if (utp->at_string) |
67aa1f3c | 14854 | addr_str = utp->at_string.get (); |
409873ef SS |
14855 | else |
14856 | { | |
14857 | /* In the absence of a source location, fall back to raw | |
14858 | address. Since there is no way to confirm that the address | |
14859 | means the same thing as when the trace was started, warn the | |
14860 | user. */ | |
3e43a32a MS |
14861 | warning (_("Uploaded tracepoint %d has no " |
14862 | "source location, using raw address"), | |
409873ef | 14863 | utp->number); |
8c042590 | 14864 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14865 | addr_str = small_buf; |
14866 | } | |
14867 | ||
14868 | /* There's not much we can do with a sequence of bytecodes. */ | |
14869 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14870 | warning (_("Uploaded tracepoint %d condition " |
14871 | "has no source form, ignoring it"), | |
409873ef | 14872 | utp->number); |
d5551862 | 14873 | |
ffc2605c TT |
14874 | event_location_up location = string_to_event_location (&addr_str, |
14875 | current_language); | |
8cdf0e15 | 14876 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14877 | location.get (), |
67aa1f3c | 14878 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14879 | 0 /* parse cond/thread */, |
8cdf0e15 | 14880 | 0 /* tempflag */, |
0fb4aa4b | 14881 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14882 | 0 /* Ignore count */, |
14883 | pending_break_support, | |
348d480f | 14884 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14885 | 0 /* from_tty */, |
84f4c1fe | 14886 | utp->enabled /* enabled */, |
44f238bb PA |
14887 | 0 /* internal */, |
14888 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14889 | return NULL; |
fd9b8c24 | 14890 | |
409873ef | 14891 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14892 | tp = get_tracepoint (tracepoint_count); |
14893 | gdb_assert (tp != NULL); | |
d5551862 | 14894 | |
00bf0b85 SS |
14895 | if (utp->pass > 0) |
14896 | { | |
8c042590 | 14897 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14898 | tp->number); |
00bf0b85 | 14899 | |
409873ef | 14900 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14901 | } |
14902 | ||
409873ef SS |
14903 | /* If we have uploaded versions of the original commands, set up a |
14904 | special-purpose "reader" function and call the usual command line | |
14905 | reader, then pass the result to the breakpoint command-setting | |
14906 | function. */ | |
a18ba4e4 | 14907 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14908 | { |
12973681 | 14909 | counted_command_line cmd_list; |
00bf0b85 | 14910 | |
409873ef | 14911 | this_utp = utp; |
3149d8c1 | 14912 | next_cmd = 0; |
d5551862 | 14913 | |
60b3cef2 | 14914 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14915 | |
c1fc2657 | 14916 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14917 | } |
a18ba4e4 SM |
14918 | else if (!utp->actions.empty () |
14919 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14920 | warning (_("Uploaded tracepoint %d actions " |
14921 | "have no source form, ignoring them"), | |
409873ef | 14922 | utp->number); |
00bf0b85 | 14923 | |
f196051f | 14924 | /* Copy any status information that might be available. */ |
c1fc2657 | 14925 | tp->hit_count = utp->hit_count; |
f196051f SS |
14926 | tp->traceframe_usage = utp->traceframe_usage; |
14927 | ||
00bf0b85 | 14928 | return tp; |
d9b3f62e | 14929 | } |
00bf0b85 | 14930 | |
1042e4c0 SS |
14931 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14932 | omitted. */ | |
14933 | ||
14934 | static void | |
1d12d88f | 14935 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14936 | { |
79a45e25 | 14937 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14938 | int num_printed; |
1042e4c0 | 14939 | |
5c458ae8 | 14940 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
14941 | |
14942 | if (num_printed == 0) | |
1042e4c0 | 14943 | { |
e5a67952 | 14944 | if (args == NULL || *args == '\0') |
112e8700 | 14945 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14946 | else |
112e8700 | 14947 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14948 | } |
ad443146 SS |
14949 | |
14950 | default_collect_info (); | |
1042e4c0 SS |
14951 | } |
14952 | ||
4a64f543 | 14953 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14954 | Not supported by all targets. */ |
14955 | static void | |
5fed81ff | 14956 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14957 | { |
14958 | enable_command (args, from_tty); | |
14959 | } | |
14960 | ||
4a64f543 | 14961 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14962 | Not supported by all targets. */ |
14963 | static void | |
5fed81ff | 14964 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14965 | { |
14966 | disable_command (args, from_tty); | |
14967 | } | |
14968 | ||
4a64f543 | 14969 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14970 | static void |
4495129a | 14971 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14972 | { |
35df4500 | 14973 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14974 | |
14975 | dont_repeat (); | |
14976 | ||
14977 | if (arg == 0) | |
14978 | { | |
14979 | int breaks_to_delete = 0; | |
14980 | ||
14981 | /* Delete all breakpoints if no argument. | |
dda83cd7 SM |
14982 | Do not delete internal or call-dummy breakpoints, these |
14983 | have to be deleted with an explicit breakpoint number | |
4a64f543 | 14984 | argument. */ |
1042e4c0 | 14985 | ALL_TRACEPOINTS (b) |
46c6471b | 14986 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14987 | { |
14988 | breaks_to_delete = 1; | |
14989 | break; | |
14990 | } | |
1042e4c0 SS |
14991 | |
14992 | /* Ask user only if there are some breakpoints to delete. */ | |
14993 | if (!from_tty | |
14994 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14995 | { | |
35df4500 | 14996 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14997 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14998 | delete_breakpoint (b); |
1042e4c0 SS |
14999 | } |
15000 | } | |
15001 | else | |
48649e1b | 15002 | map_breakpoint_numbers |
b926417a | 15003 | (arg, [&] (breakpoint *br) |
48649e1b | 15004 | { |
b926417a | 15005 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 15006 | }); |
1042e4c0 SS |
15007 | } |
15008 | ||
197f0a60 TT |
15009 | /* Helper function for trace_pass_command. */ |
15010 | ||
15011 | static void | |
d9b3f62e | 15012 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15013 | { |
d9b3f62e | 15014 | tp->pass_count = count; |
76727919 | 15015 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
15016 | if (from_tty) |
15017 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 15018 | tp->number, count); |
197f0a60 TT |
15019 | } |
15020 | ||
1042e4c0 SS |
15021 | /* Set passcount for tracepoint. |
15022 | ||
15023 | First command argument is passcount, second is tracepoint number. | |
15024 | If tracepoint number omitted, apply to most recently defined. | |
15025 | Also accepts special argument "all". */ | |
15026 | ||
15027 | static void | |
0b39b52e | 15028 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 15029 | { |
d9b3f62e | 15030 | struct tracepoint *t1; |
0b39b52e | 15031 | ULONGEST count; |
1042e4c0 SS |
15032 | |
15033 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15034 | error (_("passcount command requires an " |
15035 | "argument (count + optional TP num)")); | |
1042e4c0 | 15036 | |
0b39b52e | 15037 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15038 | |
529480d0 | 15039 | args = skip_spaces (args); |
1042e4c0 SS |
15040 | if (*args && strncasecmp (args, "all", 3) == 0) |
15041 | { | |
d9b3f62e PA |
15042 | struct breakpoint *b; |
15043 | ||
1042e4c0 | 15044 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15045 | if (*args) |
15046 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15047 | |
d9b3f62e | 15048 | ALL_TRACEPOINTS (b) |
197f0a60 | 15049 | { |
d9b3f62e | 15050 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15051 | trace_pass_set_count (t1, count, from_tty); |
15052 | } | |
15053 | } | |
15054 | else if (*args == '\0') | |
1042e4c0 | 15055 | { |
5fa1d40e | 15056 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15057 | if (t1) |
197f0a60 TT |
15058 | trace_pass_set_count (t1, count, from_tty); |
15059 | } | |
15060 | else | |
15061 | { | |
bfd28288 PA |
15062 | number_or_range_parser parser (args); |
15063 | while (!parser.finished ()) | |
1042e4c0 | 15064 | { |
bfd28288 | 15065 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
15066 | if (t1) |
15067 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15068 | } |
15069 | } | |
1042e4c0 SS |
15070 | } |
15071 | ||
d9b3f62e | 15072 | struct tracepoint * |
1042e4c0 SS |
15073 | get_tracepoint (int num) |
15074 | { | |
15075 | struct breakpoint *t; | |
15076 | ||
15077 | ALL_TRACEPOINTS (t) | |
15078 | if (t->number == num) | |
d9b3f62e | 15079 | return (struct tracepoint *) t; |
1042e4c0 SS |
15080 | |
15081 | return NULL; | |
15082 | } | |
15083 | ||
d5551862 SS |
15084 | /* Find the tracepoint with the given target-side number (which may be |
15085 | different from the tracepoint number after disconnecting and | |
15086 | reconnecting). */ | |
15087 | ||
d9b3f62e | 15088 | struct tracepoint * |
d5551862 SS |
15089 | get_tracepoint_by_number_on_target (int num) |
15090 | { | |
d9b3f62e | 15091 | struct breakpoint *b; |
d5551862 | 15092 | |
d9b3f62e PA |
15093 | ALL_TRACEPOINTS (b) |
15094 | { | |
15095 | struct tracepoint *t = (struct tracepoint *) b; | |
15096 | ||
15097 | if (t->number_on_target == num) | |
15098 | return t; | |
15099 | } | |
d5551862 SS |
15100 | |
15101 | return NULL; | |
15102 | } | |
15103 | ||
1042e4c0 | 15104 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15105 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15106 | If the argument is missing, the most recent tracepoint |
15107 | (tracepoint_count) is returned. */ | |
15108 | ||
d9b3f62e | 15109 | struct tracepoint * |
0b39b52e | 15110 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 15111 | number_or_range_parser *parser) |
1042e4c0 | 15112 | { |
1042e4c0 SS |
15113 | struct breakpoint *t; |
15114 | int tpnum; | |
0b39b52e | 15115 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 15116 | |
bfd28288 | 15117 | if (parser != NULL) |
197f0a60 | 15118 | { |
bfd28288 PA |
15119 | gdb_assert (!parser->finished ()); |
15120 | tpnum = parser->get_number (); | |
197f0a60 TT |
15121 | } |
15122 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15123 | tpnum = tracepoint_count; |
1042e4c0 | 15124 | else |
197f0a60 | 15125 | tpnum = get_number (arg); |
1042e4c0 SS |
15126 | |
15127 | if (tpnum <= 0) | |
15128 | { | |
15129 | if (instring && *instring) | |
15130 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15131 | instring); | |
15132 | else | |
5fa1d40e | 15133 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15134 | return NULL; |
15135 | } | |
15136 | ||
15137 | ALL_TRACEPOINTS (t) | |
15138 | if (t->number == tpnum) | |
15139 | { | |
d9b3f62e | 15140 | return (struct tracepoint *) t; |
1042e4c0 SS |
15141 | } |
15142 | ||
1042e4c0 SS |
15143 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15144 | return NULL; | |
15145 | } | |
15146 | ||
d9b3f62e PA |
15147 | void |
15148 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15149 | { | |
15150 | if (b->thread != -1) | |
15151 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15152 | ||
15153 | if (b->task != 0) | |
15154 | fprintf_unfiltered (fp, " task %d", b->task); | |
15155 | ||
15156 | fprintf_unfiltered (fp, "\n"); | |
15157 | } | |
15158 | ||
6149aea9 PA |
15159 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15160 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15161 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 15162 | true. */ |
6149aea9 | 15163 | |
1042e4c0 | 15164 | static void |
4495129a | 15165 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 15166 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
15167 | { |
15168 | struct breakpoint *tp; | |
6149aea9 | 15169 | int any = 0; |
6149aea9 | 15170 | int extra_trace_bits = 0; |
1042e4c0 | 15171 | |
6149aea9 PA |
15172 | if (filename == 0 || *filename == 0) |
15173 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15174 | |
15175 | /* See if we have anything to save. */ | |
6149aea9 | 15176 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15177 | { |
6149aea9 | 15178 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15179 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15180 | continue; |
15181 | ||
15182 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15183 | if (filter && !filter (tp)) | |
15184 | continue; | |
15185 | ||
15186 | any = 1; | |
15187 | ||
15188 | if (is_tracepoint (tp)) | |
15189 | { | |
15190 | extra_trace_bits = 1; | |
15191 | ||
15192 | /* We can stop searching. */ | |
15193 | break; | |
15194 | } | |
1042e4c0 | 15195 | } |
6149aea9 PA |
15196 | |
15197 | if (!any) | |
1042e4c0 | 15198 | { |
6149aea9 | 15199 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15200 | return; |
15201 | } | |
15202 | ||
ee0c3293 | 15203 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
15204 | |
15205 | stdio_file fp; | |
15206 | ||
ee0c3293 | 15207 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 15208 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 15209 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 15210 | |
6149aea9 | 15211 | if (extra_trace_bits) |
d7e74731 | 15212 | save_trace_state_variables (&fp); |
8bf6485c | 15213 | |
6149aea9 | 15214 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15215 | { |
6149aea9 | 15216 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15217 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15218 | continue; |
8bf6485c | 15219 | |
6149aea9 PA |
15220 | /* If we have a filter, only save the breakpoints it accepts. */ |
15221 | if (filter && !filter (tp)) | |
15222 | continue; | |
15223 | ||
d7e74731 | 15224 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 15225 | |
6149aea9 PA |
15226 | /* Note, we can't rely on tp->number for anything, as we can't |
15227 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15228 | instead. */ | |
15229 | ||
15230 | if (tp->cond_string) | |
d7e74731 | 15231 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15232 | |
15233 | if (tp->ignore_count) | |
d7e74731 | 15234 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15235 | |
2d9442cc | 15236 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15237 | { |
d7e74731 | 15238 | fp.puts (" commands\n"); |
a7bdde9e | 15239 | |
d7e74731 | 15240 | current_uiout->redirect (&fp); |
a70b8144 | 15241 | try |
1042e4c0 | 15242 | { |
d1b0a7bf | 15243 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15244 | } |
230d2906 | 15245 | catch (const gdb_exception &ex) |
492d29ea | 15246 | { |
112e8700 | 15247 | current_uiout->redirect (NULL); |
eedc3f4f | 15248 | throw; |
492d29ea | 15249 | } |
1042e4c0 | 15250 | |
112e8700 | 15251 | current_uiout->redirect (NULL); |
d7e74731 | 15252 | fp.puts (" end\n"); |
1042e4c0 | 15253 | } |
6149aea9 PA |
15254 | |
15255 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15256 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15257 | |
15258 | /* If this is a multi-location breakpoint, check if the locations | |
15259 | should be individually disabled. Watchpoint locations are | |
15260 | special, and not user visible. */ | |
15261 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15262 | { | |
15263 | struct bp_location *loc; | |
15264 | int n = 1; | |
15265 | ||
15266 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15267 | if (!loc->enabled) | |
d7e74731 | 15268 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15269 | } |
1042e4c0 | 15270 | } |
8bf6485c | 15271 | |
6149aea9 | 15272 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15273 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15274 | |
1042e4c0 | 15275 | if (from_tty) |
ee0c3293 | 15276 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15277 | } |
15278 | ||
15279 | /* The `save breakpoints' command. */ | |
15280 | ||
15281 | static void | |
4495129a | 15282 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15283 | { |
15284 | save_breakpoints (args, from_tty, NULL); | |
15285 | } | |
15286 | ||
15287 | /* The `save tracepoints' command. */ | |
15288 | ||
15289 | static void | |
4495129a | 15290 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15291 | { |
15292 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15293 | } |
15294 | ||
15295 | /* Create a vector of all tracepoints. */ | |
15296 | ||
f51e0e20 | 15297 | std::vector<breakpoint *> |
eeae04df | 15298 | all_tracepoints (void) |
1042e4c0 | 15299 | { |
f51e0e20 | 15300 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15301 | struct breakpoint *tp; |
15302 | ||
15303 | ALL_TRACEPOINTS (tp) | |
15304 | { | |
f51e0e20 | 15305 | tp_vec.push_back (tp); |
1042e4c0 SS |
15306 | } |
15307 | ||
15308 | return tp_vec; | |
15309 | } | |
15310 | ||
c906108c | 15311 | \f |
629500fa KS |
15312 | /* This help string is used to consolidate all the help string for specifying |
15313 | locations used by several commands. */ | |
15314 | ||
15315 | #define LOCATION_HELP_STRING \ | |
15316 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15317 | source filename, function name, label name, and line number.\n\ | |
15318 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15319 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15320 | \"factorial.c:fact:the_top\".\n\ | |
15321 | \n\ | |
15322 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15323 | program. Example: To specify the fourth byte past the start function\n\ | |
15324 | \"main\", use \"*main + 4\".\n\ | |
15325 | \n\ | |
15326 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15327 | syntax to specify location parameters.\n\ | |
15328 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15329 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15330 | -function fact -label the_top\".\n\ |
15331 | \n\ | |
15332 | By default, a specified function is matched against the program's\n\ | |
15333 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15334 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15335 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15336 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15337 | specified name as a complete fully-qualified name instead." |
629500fa | 15338 | |
4a64f543 MS |
15339 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15340 | commands. It is defined as a macro to prevent duplication. | |
15341 | COMMAND should be a string constant containing the name of the | |
15342 | command. */ | |
629500fa | 15343 | |
31e2b00f | 15344 | #define BREAK_ARGS_HELP(command) \ |
733d554a TBA |
15345 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM]\n\ |
15346 | \t[-force-condition] [if CONDITION]\n\ | |
fb7b5af4 SDJ |
15347 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ |
15348 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15349 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15350 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15351 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15352 | below.\n\ | |
15353 | \n\ | |
dc10affe PA |
15354 | With no LOCATION, uses current execution address of the selected\n\ |
15355 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15356 | \n\ |
15357 | THREADNUM is the number from \"info threads\".\n\ | |
15358 | CONDITION is a boolean expression.\n\ | |
733d554a TBA |
15359 | \n\ |
15360 | With the \"-force-condition\" flag, the condition is defined even when\n\ | |
15361 | it is invalid for all current locations.\n\ | |
89549d7f | 15362 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15363 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15364 | conditions are different.\n\ | |
31e2b00f AS |
15365 | \n\ |
15366 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15367 | ||
44feb3ce TT |
15368 | /* List of subcommands for "catch". */ |
15369 | static struct cmd_list_element *catch_cmdlist; | |
15370 | ||
15371 | /* List of subcommands for "tcatch". */ | |
15372 | static struct cmd_list_element *tcatch_cmdlist; | |
15373 | ||
9ac4176b | 15374 | void |
a121b7c1 | 15375 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15376 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15377 | completer_ftype *completer, |
44feb3ce TT |
15378 | void *user_data_catch, |
15379 | void *user_data_tcatch) | |
15380 | { | |
15381 | struct cmd_list_element *command; | |
15382 | ||
0450cc4c | 15383 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15384 | &catch_cmdlist); |
15385 | set_cmd_sfunc (command, sfunc); | |
15386 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15387 | set_cmd_completer (command, completer); |
44feb3ce | 15388 | |
0450cc4c | 15389 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15390 | &tcatch_cmdlist); |
15391 | set_cmd_sfunc (command, sfunc); | |
15392 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15393 | set_cmd_completer (command, completer); |
44feb3ce TT |
15394 | } |
15395 | ||
84f4c1fe | 15396 | struct breakpoint * |
95da600f | 15397 | iterate_over_breakpoints (gdb::function_view<bool (breakpoint *)> callback) |
84f4c1fe | 15398 | { |
35df4500 | 15399 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15400 | |
35df4500 | 15401 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe | 15402 | { |
95da600f | 15403 | if (callback (b)) |
84f4c1fe PM |
15404 | return b; |
15405 | } | |
15406 | ||
15407 | return NULL; | |
15408 | } | |
15409 | ||
0574c78f GB |
15410 | /* Zero if any of the breakpoint's locations could be a location where |
15411 | functions have been inlined, nonzero otherwise. */ | |
15412 | ||
15413 | static int | |
15414 | is_non_inline_function (struct breakpoint *b) | |
15415 | { | |
15416 | /* The shared library event breakpoint is set on the address of a | |
15417 | non-inline function. */ | |
15418 | if (b->type == bp_shlib_event) | |
15419 | return 1; | |
15420 | ||
15421 | return 0; | |
15422 | } | |
15423 | ||
15424 | /* Nonzero if the specified PC cannot be a location where functions | |
15425 | have been inlined. */ | |
15426 | ||
15427 | int | |
accd0bcd | 15428 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15429 | const struct target_waitstatus *ws) |
0574c78f GB |
15430 | { |
15431 | struct breakpoint *b; | |
15432 | struct bp_location *bl; | |
15433 | ||
15434 | ALL_BREAKPOINTS (b) | |
15435 | { | |
15436 | if (!is_non_inline_function (b)) | |
15437 | continue; | |
15438 | ||
15439 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15440 | { | |
15441 | if (!bl->shlib_disabled | |
09ac7c10 | 15442 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15443 | return 1; |
15444 | } | |
15445 | } | |
15446 | ||
15447 | return 0; | |
15448 | } | |
15449 | ||
2f202fde JK |
15450 | /* Remove any references to OBJFILE which is going to be freed. */ |
15451 | ||
15452 | void | |
15453 | breakpoint_free_objfile (struct objfile *objfile) | |
15454 | { | |
15455 | struct bp_location **locp, *loc; | |
15456 | ||
15457 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15458 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15459 | loc->symtab = NULL; |
15460 | } | |
15461 | ||
2060206e PA |
15462 | void |
15463 | initialize_breakpoint_ops (void) | |
15464 | { | |
15465 | static int initialized = 0; | |
15466 | ||
15467 | struct breakpoint_ops *ops; | |
15468 | ||
15469 | if (initialized) | |
15470 | return; | |
15471 | initialized = 1; | |
15472 | ||
15473 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15474 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15475 | internal and momentary breakpoints, etc.). */ | |
15476 | ops = &bkpt_base_breakpoint_ops; | |
15477 | *ops = base_breakpoint_ops; | |
15478 | ops->re_set = bkpt_re_set; | |
15479 | ops->insert_location = bkpt_insert_location; | |
15480 | ops->remove_location = bkpt_remove_location; | |
15481 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15482 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15483 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15484 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15485 | |
15486 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15487 | ops = &bkpt_breakpoint_ops; | |
15488 | *ops = bkpt_base_breakpoint_ops; | |
15489 | ops->re_set = bkpt_re_set; | |
15490 | ops->resources_needed = bkpt_resources_needed; | |
15491 | ops->print_it = bkpt_print_it; | |
15492 | ops->print_mention = bkpt_print_mention; | |
15493 | ops->print_recreate = bkpt_print_recreate; | |
15494 | ||
15495 | /* Ranged breakpoints. */ | |
15496 | ops = &ranged_breakpoint_ops; | |
15497 | *ops = bkpt_breakpoint_ops; | |
15498 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15499 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15500 | ops->print_it = print_it_ranged_breakpoint; | |
15501 | ops->print_one = print_one_ranged_breakpoint; | |
15502 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15503 | ops->print_mention = print_mention_ranged_breakpoint; | |
15504 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15505 | ||
15506 | /* Internal breakpoints. */ | |
15507 | ops = &internal_breakpoint_ops; | |
15508 | *ops = bkpt_base_breakpoint_ops; | |
15509 | ops->re_set = internal_bkpt_re_set; | |
15510 | ops->check_status = internal_bkpt_check_status; | |
15511 | ops->print_it = internal_bkpt_print_it; | |
15512 | ops->print_mention = internal_bkpt_print_mention; | |
15513 | ||
15514 | /* Momentary breakpoints. */ | |
15515 | ops = &momentary_breakpoint_ops; | |
15516 | *ops = bkpt_base_breakpoint_ops; | |
15517 | ops->re_set = momentary_bkpt_re_set; | |
15518 | ops->check_status = momentary_bkpt_check_status; | |
15519 | ops->print_it = momentary_bkpt_print_it; | |
15520 | ops->print_mention = momentary_bkpt_print_mention; | |
15521 | ||
55aa24fb SDJ |
15522 | /* Probe breakpoints. */ |
15523 | ops = &bkpt_probe_breakpoint_ops; | |
15524 | *ops = bkpt_breakpoint_ops; | |
15525 | ops->insert_location = bkpt_probe_insert_location; | |
15526 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15527 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15528 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15529 | |
2060206e PA |
15530 | /* Watchpoints. */ |
15531 | ops = &watchpoint_breakpoint_ops; | |
15532 | *ops = base_breakpoint_ops; | |
15533 | ops->re_set = re_set_watchpoint; | |
15534 | ops->insert_location = insert_watchpoint; | |
15535 | ops->remove_location = remove_watchpoint; | |
15536 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15537 | ops->check_status = check_status_watchpoint; | |
15538 | ops->resources_needed = resources_needed_watchpoint; | |
15539 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15540 | ops->print_it = print_it_watchpoint; | |
15541 | ops->print_mention = print_mention_watchpoint; | |
15542 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15543 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15544 | |
15545 | /* Masked watchpoints. */ | |
15546 | ops = &masked_watchpoint_breakpoint_ops; | |
15547 | *ops = watchpoint_breakpoint_ops; | |
15548 | ops->insert_location = insert_masked_watchpoint; | |
15549 | ops->remove_location = remove_masked_watchpoint; | |
15550 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15551 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15552 | ops->print_it = print_it_masked_watchpoint; | |
15553 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15554 | ops->print_mention = print_mention_masked_watchpoint; | |
15555 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15556 | ||
15557 | /* Tracepoints. */ | |
15558 | ops = &tracepoint_breakpoint_ops; | |
15559 | *ops = base_breakpoint_ops; | |
15560 | ops->re_set = tracepoint_re_set; | |
15561 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15562 | ops->print_one_detail = tracepoint_print_one_detail; | |
15563 | ops->print_mention = tracepoint_print_mention; | |
15564 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15565 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15566 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15567 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15568 | |
55aa24fb SDJ |
15569 | /* Probe tracepoints. */ |
15570 | ops = &tracepoint_probe_breakpoint_ops; | |
15571 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15572 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15573 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15574 | |
983af33b SDJ |
15575 | /* Static tracepoints with marker (`-m'). */ |
15576 | ops = &strace_marker_breakpoint_ops; | |
15577 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15578 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15579 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15580 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15581 | |
15582 | /* Fork catchpoints. */ | |
15583 | ops = &catch_fork_breakpoint_ops; | |
15584 | *ops = base_breakpoint_ops; | |
15585 | ops->insert_location = insert_catch_fork; | |
15586 | ops->remove_location = remove_catch_fork; | |
15587 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15588 | ops->print_it = print_it_catch_fork; | |
15589 | ops->print_one = print_one_catch_fork; | |
15590 | ops->print_mention = print_mention_catch_fork; | |
15591 | ops->print_recreate = print_recreate_catch_fork; | |
15592 | ||
15593 | /* Vfork catchpoints. */ | |
15594 | ops = &catch_vfork_breakpoint_ops; | |
15595 | *ops = base_breakpoint_ops; | |
15596 | ops->insert_location = insert_catch_vfork; | |
15597 | ops->remove_location = remove_catch_vfork; | |
15598 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15599 | ops->print_it = print_it_catch_vfork; | |
15600 | ops->print_one = print_one_catch_vfork; | |
15601 | ops->print_mention = print_mention_catch_vfork; | |
15602 | ops->print_recreate = print_recreate_catch_vfork; | |
15603 | ||
15604 | /* Exec catchpoints. */ | |
15605 | ops = &catch_exec_breakpoint_ops; | |
15606 | *ops = base_breakpoint_ops; | |
2060206e PA |
15607 | ops->insert_location = insert_catch_exec; |
15608 | ops->remove_location = remove_catch_exec; | |
15609 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15610 | ops->print_it = print_it_catch_exec; | |
15611 | ops->print_one = print_one_catch_exec; | |
15612 | ops->print_mention = print_mention_catch_exec; | |
15613 | ops->print_recreate = print_recreate_catch_exec; | |
15614 | ||
edcc5120 TT |
15615 | /* Solib-related catchpoints. */ |
15616 | ops = &catch_solib_breakpoint_ops; | |
15617 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15618 | ops->insert_location = insert_catch_solib; |
15619 | ops->remove_location = remove_catch_solib; | |
15620 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15621 | ops->check_status = check_status_catch_solib; | |
15622 | ops->print_it = print_it_catch_solib; | |
15623 | ops->print_one = print_one_catch_solib; | |
15624 | ops->print_mention = print_mention_catch_solib; | |
15625 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15626 | |
15627 | ops = &dprintf_breakpoint_ops; | |
15628 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15629 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15630 | ops->resources_needed = bkpt_resources_needed; |
15631 | ops->print_it = bkpt_print_it; | |
15632 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15633 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15634 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15635 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15636 | } |
15637 | ||
8bfd80db YQ |
15638 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15639 | ||
15640 | static struct cmd_list_element *enablebreaklist = NULL; | |
15641 | ||
8588b356 SM |
15642 | /* See breakpoint.h. */ |
15643 | ||
15644 | cmd_list_element *commands_cmd_element = nullptr; | |
15645 | ||
6c265988 | 15646 | void _initialize_breakpoint (); |
c906108c | 15647 | void |
6c265988 | 15648 | _initialize_breakpoint () |
c906108c SS |
15649 | { |
15650 | struct cmd_list_element *c; | |
15651 | ||
2060206e PA |
15652 | initialize_breakpoint_ops (); |
15653 | ||
76727919 TT |
15654 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15655 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15656 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15657 | |
c906108c SS |
15658 | breakpoint_chain = 0; |
15659 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15660 | before a breakpoint is set. */ | |
15661 | breakpoint_count = 0; | |
15662 | ||
1042e4c0 SS |
15663 | tracepoint_count = 0; |
15664 | ||
1bedd215 AC |
15665 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15666 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15667 | Usage is `ignore N COUNT'.")); | |
c906108c | 15668 | |
8588b356 SM |
15669 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15670 | commands_command, _("\ | |
18da0c51 MG |
15671 | Set commands to be executed when the given breakpoints are hit.\n\ |
15672 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15673 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15674 | (e.g. `5-7').\n\ | |
c906108c SS |
15675 | With no argument, the targeted breakpoint is the last one set.\n\ |
15676 | The commands themselves follow starting on the next line.\n\ | |
15677 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15678 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15679 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15680 | |
b1d4d8d1 TBA |
15681 | const auto cc_opts = make_condition_command_options_def_group (nullptr); |
15682 | static std::string condition_command_help | |
15683 | = gdb::option::build_help (_("\ | |
1bedd215 | 15684 | Specify breakpoint number N to break only if COND is true.\n\ |
b1d4d8d1 | 15685 | Usage is `condition [OPTION] N COND', where N is an integer and COND\n\ |
733d554a | 15686 | is an expression to be evaluated whenever breakpoint N is reached.\n\ |
b1d4d8d1 TBA |
15687 | \n\ |
15688 | Options:\n\ | |
15689 | %OPTIONS%"), cc_opts); | |
15690 | ||
15691 | c = add_com ("condition", class_breakpoint, condition_command, | |
15692 | condition_command_help.c_str ()); | |
15693 | set_cmd_completer_handle_brkchars (c, condition_completer); | |
c906108c | 15694 | |
1bedd215 | 15695 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15696 | Set a temporary breakpoint.\n\ |
c906108c SS |
15697 | Like \"break\" except the breakpoint is only temporary,\n\ |
15698 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15699 | by using \"enable delete\" on the breakpoint number.\n\ |
15700 | \n" | |
15701 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15702 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15703 | |
1bedd215 | 15704 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15705 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15706 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15707 | some target hardware may not have this support.\n\ |
15708 | \n" | |
15709 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15710 | set_cmd_completer (c, location_completer); |
c906108c | 15711 | |
1bedd215 | 15712 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15713 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15714 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15715 | so it will be deleted when hit.\n\ |
15716 | \n" | |
15717 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15718 | set_cmd_completer (c, location_completer); |
c906108c | 15719 | |
1bedd215 | 15720 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
590042fc PW |
15721 | Enable all or some breakpoints.\n\ |
15722 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15723 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15724 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15725 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15726 | With a subcommand you can enable temporarily."), |
c906108c | 15727 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15728 | |
15729 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15730 | ||
84951ab5 | 15731 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
15732 | Enable all or some breakpoints.\n\ |
15733 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15734 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15735 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15736 | May be abbreviated to simply \"enable\"."), |
c5aa993b | 15737 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15738 | |
1a966eab | 15739 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15740 | Enable some breakpoints for one hit.\n\ |
15741 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 15742 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
15743 | &enablebreaklist); |
15744 | ||
1a966eab | 15745 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15746 | Enable some breakpoints and delete when hit.\n\ |
15747 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 15748 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15749 | &enablebreaklist); |
15750 | ||
816338b5 | 15751 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
15752 | Enable some breakpoints for COUNT hits.\n\ |
15753 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15754 | If a breakpoint is hit while enabled in this fashion,\n\ |
15755 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15756 | &enablebreaklist); | |
15757 | ||
1a966eab | 15758 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15759 | Enable some breakpoints and delete when hit.\n\ |
15760 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 15761 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15762 | &enablelist); |
15763 | ||
1a966eab | 15764 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15765 | Enable some breakpoints for one hit.\n\ |
15766 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 15767 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
15768 | &enablelist); |
15769 | ||
15770 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
15771 | Enable some breakpoints for COUNT hits.\n\ |
15772 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15773 | If a breakpoint is hit while enabled in this fashion,\n\ |
15774 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15775 | &enablelist); |
15776 | ||
1bedd215 | 15777 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
590042fc PW |
15778 | Disable all or some breakpoints.\n\ |
15779 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15780 | Arguments are breakpoint numbers with spaces in between.\n\ |
15781 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15782 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15783 | &disablelist, "disable ", 1, &cmdlist); |
15784 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15785 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15786 | |
57b4f16e | 15787 | add_cmd ("breakpoints", class_breakpoint, disable_command, _("\ |
590042fc PW |
15788 | Disable all or some breakpoints.\n\ |
15789 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15790 | Arguments are breakpoint numbers with spaces in between.\n\ |
15791 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15792 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15793 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15794 | &disablelist); |
15795 | ||
1bedd215 | 15796 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
590042fc PW |
15797 | Delete all or some breakpoints.\n\ |
15798 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15799 | Arguments are breakpoint numbers with spaces in between.\n\ |
15800 | To delete all breakpoints, give no argument.\n\ | |
15801 | \n\ | |
590042fc | 15802 | Also a prefix command for deletion of other GDB objects."), |
c906108c SS |
15803 | &deletelist, "delete ", 1, &cmdlist); |
15804 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15805 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15806 | |
57b4f16e | 15807 | add_cmd ("breakpoints", class_breakpoint, delete_command, _("\ |
590042fc PW |
15808 | Delete all or some breakpoints or auto-display expressions.\n\ |
15809 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15810 | Arguments are breakpoint numbers with spaces in between.\n\ |
15811 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15812 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15813 | &deletelist); |
15814 | ||
1bedd215 | 15815 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15816 | Clear breakpoint at specified location.\n\ |
15817 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15818 | \n\ |
15819 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15820 | is executing in.\n" |
89549d7f | 15821 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15822 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15823 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15824 | |
1bedd215 | 15825 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15826 | Set breakpoint at specified location.\n" |
31e2b00f | 15827 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15828 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15829 | |
c906108c SS |
15830 | add_com_alias ("b", "break", class_run, 1); |
15831 | add_com_alias ("br", "break", class_run, 1); | |
15832 | add_com_alias ("bre", "break", class_run, 1); | |
15833 | add_com_alias ("brea", "break", class_run, 1); | |
15834 | ||
c906108c SS |
15835 | if (dbx_commands) |
15836 | { | |
1bedd215 AC |
15837 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15838 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15839 | &stoplist, "stop ", 1, &cmdlist); |
15840 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15841 | _("Break in function or address."), &stoplist); |
c5aa993b | 15842 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15843 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15844 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15845 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15846 | The \"Type\" column indicates one of:\n\ |
15847 | \tbreakpoint - normal breakpoint\n\ | |
15848 | \twatchpoint - watchpoint\n\ | |
15849 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15850 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15851 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15852 | address and file/line number respectively.\n\ |
15853 | \n\ | |
15854 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15855 | are set to the address of the last breakpoint listed unless the command\n\ |
15856 | is prefixed with \"server \".\n\n\ | |
c906108c | 15857 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15858 | breakpoint set.")); |
c906108c SS |
15859 | } |
15860 | ||
11db9430 | 15861 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15862 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15863 | The \"Type\" column indicates one of:\n\ |
15864 | \tbreakpoint - normal breakpoint\n\ | |
15865 | \twatchpoint - watchpoint\n\ | |
15866 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15867 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15868 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15869 | address and file/line number respectively.\n\ |
15870 | \n\ | |
15871 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15872 | are set to the address of the last breakpoint listed unless the command\n\ |
15873 | is prefixed with \"server \".\n\n\ | |
c906108c | 15874 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15875 | breakpoint set.")); |
c906108c | 15876 | |
6b04bdb7 MS |
15877 | add_info_alias ("b", "breakpoints", 1); |
15878 | ||
1a966eab AC |
15879 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15880 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15881 | The \"Type\" column indicates one of:\n\ |
15882 | \tbreakpoint - normal breakpoint\n\ | |
15883 | \twatchpoint - watchpoint\n\ | |
15884 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15885 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15886 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15887 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15888 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15889 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15890 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15891 | address and file/line number respectively.\n\ |
15892 | \n\ | |
15893 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15894 | are set to the address of the last breakpoint listed unless the command\n\ |
15895 | is prefixed with \"server \".\n\n\ | |
c906108c | 15896 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15897 | breakpoint set."), |
c906108c SS |
15898 | &maintenanceinfolist); |
15899 | ||
3b6acaee | 15900 | add_basic_prefix_cmd ("catch", class_breakpoint, _("\ |
44feb3ce | 15901 | Set catchpoints to catch events."), |
3b6acaee TT |
15902 | &catch_cmdlist, "catch ", |
15903 | 0/*allow-unknown*/, &cmdlist); | |
44feb3ce | 15904 | |
3b6acaee | 15905 | add_basic_prefix_cmd ("tcatch", class_breakpoint, _("\ |
44feb3ce | 15906 | Set temporary catchpoints to catch events."), |
3b6acaee TT |
15907 | &tcatch_cmdlist, "tcatch ", |
15908 | 0/*allow-unknown*/, &cmdlist); | |
44feb3ce | 15909 | |
44feb3ce TT |
15910 | add_catch_command ("fork", _("Catch calls to fork."), |
15911 | catch_fork_command_1, | |
dda83cd7 | 15912 | NULL, |
44feb3ce TT |
15913 | (void *) (uintptr_t) catch_fork_permanent, |
15914 | (void *) (uintptr_t) catch_fork_temporary); | |
15915 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15916 | catch_fork_command_1, | |
dda83cd7 | 15917 | NULL, |
44feb3ce TT |
15918 | (void *) (uintptr_t) catch_vfork_permanent, |
15919 | (void *) (uintptr_t) catch_vfork_temporary); | |
15920 | add_catch_command ("exec", _("Catch calls to exec."), | |
15921 | catch_exec_command_1, | |
dda83cd7 | 15922 | NULL, |
a96d9b2e SDJ |
15923 | CATCH_PERMANENT, |
15924 | CATCH_TEMPORARY); | |
edcc5120 TT |
15925 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15926 | Usage: catch load [REGEX]\n\ | |
15927 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15928 | catch_load_command_1, | |
15929 | NULL, | |
15930 | CATCH_PERMANENT, | |
15931 | CATCH_TEMPORARY); | |
15932 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15933 | Usage: catch unload [REGEX]\n\ | |
15934 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15935 | catch_unload_command_1, | |
15936 | NULL, | |
15937 | CATCH_PERMANENT, | |
15938 | CATCH_TEMPORARY); | |
c5aa993b | 15939 | |
a15a5258 AB |
15940 | const auto opts = make_watch_options_def_group (nullptr); |
15941 | ||
15942 | static const std::string watch_help = gdb::option::build_help (_("\ | |
15943 | Set a watchpoint for EXPRESSION.\n\ | |
15944 | Usage: watch [-location] EXPRESSION\n\ | |
15945 | \n\ | |
15946 | Options:\n\ | |
15947 | %OPTIONS%\n\ | |
15948 | \n\ | |
c906108c | 15949 | A watchpoint stops execution of your program whenever the value of\n\ |
a15a5258 AB |
15950 | an expression changes."), opts); |
15951 | c = add_com ("watch", class_breakpoint, watch_command, | |
15952 | watch_help.c_str ()); | |
15953 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
15954 | ||
15955 | static const std::string rwatch_help = gdb::option::build_help (_("\ | |
15956 | Set a read watchpoint for EXPRESSION.\n\ | |
15957 | Usage: rwatch [-location] EXPRESSION\n\ | |
15958 | \n\ | |
15959 | Options:\n\ | |
15960 | %OPTIONS%\n\ | |
15961 | \n\ | |
15962 | A read watchpoint stops execution of your program whenever the value of\n\ | |
15963 | an expression is read."), opts); | |
15964 | c = add_com ("rwatch", class_breakpoint, rwatch_command, | |
15965 | rwatch_help.c_str ()); | |
15966 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
15967 | ||
15968 | static const std::string awatch_help = gdb::option::build_help (_("\ | |
15969 | Set an access watchpoint for EXPRESSION.\n\ | |
15970 | Usage: awatch [-location] EXPRESSION\n\ | |
15971 | \n\ | |
15972 | Options:\n\ | |
15973 | %OPTIONS%\n\ | |
15974 | \n\ | |
15975 | An access watchpoint stops execution of your program whenever the value\n\ | |
15976 | of an expression is either read or written."), opts); | |
15977 | c = add_com ("awatch", class_breakpoint, awatch_command, | |
15978 | awatch_help.c_str ()); | |
15979 | set_cmd_completer_handle_brkchars (c, watch_command_completer); | |
c906108c | 15980 | |
11db9430 | 15981 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15982 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15983 | |
920d2a44 AC |
15984 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15985 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15986 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15987 | &can_use_hw_watchpoints, _("\ | |
15988 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15989 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15990 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15991 | such is available. (However, any hardware watchpoints that were\n\ | |
15992 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15993 | hardware.)"), |
15994 | NULL, | |
920d2a44 | 15995 | show_can_use_hw_watchpoints, |
85c07804 | 15996 | &setlist, &showlist); |
c906108c SS |
15997 | |
15998 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15999 | |
1042e4c0 SS |
16000 | /* Tracepoint manipulation commands. */ |
16001 | ||
16002 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 16003 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
16004 | \n" |
16005 | BREAK_ARGS_HELP ("trace") "\n\ | |
16006 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16007 | set_cmd_completer (c, location_completer); | |
16008 | ||
57b4f16e PW |
16009 | add_com_alias ("tp", "trace", class_breakpoint, 0); |
16010 | add_com_alias ("tr", "trace", class_breakpoint, 1); | |
16011 | add_com_alias ("tra", "trace", class_breakpoint, 1); | |
16012 | add_com_alias ("trac", "trace", class_breakpoint, 1); | |
1042e4c0 | 16013 | |
7a697b8d | 16014 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 16015 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
16016 | \n" |
16017 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16018 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16019 | set_cmd_completer (c, location_completer); | |
16020 | ||
0fb4aa4b | 16021 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 16022 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
16023 | \n\ |
16024 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
16025 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
16026 | or -m MARKER_ID.\n\n\ | |
16027 | If a marker id is specified, probe the marker with that name. With\n\ | |
16028 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
16029 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
16030 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16031 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16032 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16033 | \n\ | |
16034 | CONDITION is a boolean expression.\n\ | |
89549d7f | 16035 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
16036 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16037 | conditions are different.\n\ | |
0fb4aa4b PA |
16038 | \n\ |
16039 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16040 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16041 | set_cmd_completer (c, location_completer); | |
16042 | ||
11db9430 | 16043 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 16044 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16045 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16046 | last tracepoint set.")); | |
16047 | ||
16048 | add_info_alias ("tp", "tracepoints", 1); | |
16049 | ||
16050 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16051 | Delete specified tracepoints.\n\ | |
16052 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16053 | No argument means delete all tracepoints."), | |
16054 | &deletelist); | |
7e20dfcd | 16055 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16056 | |
16057 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16058 | Disable specified tracepoints.\n\ | |
16059 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16060 | No argument means disable all tracepoints."), | |
16061 | &disablelist); | |
16062 | deprecate_cmd (c, "disable"); | |
16063 | ||
16064 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16065 | Enable specified tracepoints.\n\ | |
16066 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16067 | No argument means enable all tracepoints."), | |
16068 | &enablelist); | |
16069 | deprecate_cmd (c, "enable"); | |
16070 | ||
16071 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16072 | Set the passcount for a tracepoint.\n\ | |
16073 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16074 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16075 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16076 | ||
0743fc83 TT |
16077 | add_basic_prefix_cmd ("save", class_breakpoint, |
16078 | _("Save breakpoint definitions as a script."), | |
16079 | &save_cmdlist, "save ", | |
16080 | 0/*allow-unknown*/, &cmdlist); | |
6149aea9 PA |
16081 | |
16082 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16083 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16084 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16085 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16086 | session to restore them."), | |
16087 | &save_cmdlist); | |
16088 | set_cmd_completer (c, filename_completer); | |
16089 | ||
16090 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16091 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16092 | Use the 'source' command in another debug session to restore them."), |
16093 | &save_cmdlist); | |
1042e4c0 SS |
16094 | set_cmd_completer (c, filename_completer); |
16095 | ||
6149aea9 PA |
16096 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16097 | deprecate_cmd (c, "save tracepoints"); | |
16098 | ||
3b6acaee | 16099 | add_basic_prefix_cmd ("breakpoint", class_maintenance, _("\ |
590042fc | 16100 | Breakpoint specific settings.\n\ |
fa8d40ab | 16101 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 16102 | pending breakpoint behavior."), |
3b6acaee TT |
16103 | &breakpoint_set_cmdlist, "set breakpoint ", |
16104 | 0/*allow-unknown*/, &setlist); | |
16105 | add_show_prefix_cmd ("breakpoint", class_maintenance, _("\ | |
590042fc | 16106 | Breakpoint specific settings.\n\ |
fa8d40ab | 16107 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 16108 | pending breakpoint behavior."), |
3b6acaee TT |
16109 | &breakpoint_show_cmdlist, "show breakpoint ", |
16110 | 0/*allow-unknown*/, &showlist); | |
fa8d40ab | 16111 | |
7915a72c AC |
16112 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16113 | &pending_break_support, _("\ | |
16114 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16115 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16116 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16117 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16118 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16119 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16120 | NULL, |
920d2a44 | 16121 | show_pending_break_support, |
6e1d7d6c AC |
16122 | &breakpoint_set_cmdlist, |
16123 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16124 | |
16125 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16126 | |
16127 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16128 | &automatic_hardware_breakpoints, _("\ | |
16129 | Set automatic usage of hardware breakpoints."), _("\ | |
16130 | Show automatic usage of hardware breakpoints."), _("\ | |
16131 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16132 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16133 | a warning will be emitted for such breakpoints."), | |
16134 | NULL, | |
16135 | show_automatic_hardware_breakpoints, | |
16136 | &breakpoint_set_cmdlist, | |
16137 | &breakpoint_show_cmdlist); | |
74960c60 | 16138 | |
a25a5a45 PA |
16139 | add_setshow_boolean_cmd ("always-inserted", class_support, |
16140 | &always_inserted_mode, _("\ | |
74960c60 VP |
16141 | Set mode for inserting breakpoints."), _("\ |
16142 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
16143 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
16144 | they're created, kept inserted even when execution stops, and removed\n\ | |
16145 | only when the user deletes them. When this mode is off (the default),\n\ | |
16146 | breakpoints are inserted only when execution continues, and removed\n\ | |
16147 | when execution stops."), | |
72d0e2c5 YQ |
16148 | NULL, |
16149 | &show_always_inserted_mode, | |
16150 | &breakpoint_set_cmdlist, | |
16151 | &breakpoint_show_cmdlist); | |
f1310107 | 16152 | |
b775012e LM |
16153 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16154 | condition_evaluation_enums, | |
16155 | &condition_evaluation_mode_1, _("\ | |
16156 | Set mode of breakpoint condition evaluation."), _("\ | |
16157 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16158 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16159 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16160 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16161 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16162 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16163 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
7a4e8e7d | 16164 | be set to \"host\"."), |
b775012e LM |
16165 | &set_condition_evaluation_mode, |
16166 | &show_condition_evaluation_mode, | |
16167 | &breakpoint_set_cmdlist, | |
16168 | &breakpoint_show_cmdlist); | |
16169 | ||
f1310107 TJB |
16170 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16171 | Set a breakpoint for an address range.\n\ | |
16172 | break-range START-LOCATION, END-LOCATION\n\ | |
16173 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16174 | LINENUM, for that line in the current file,\n\ | |
16175 | FILE:LINENUM, for that line in that file,\n\ | |
16176 | +OFFSET, for that number of lines after the current line\n\ | |
dda83cd7 | 16177 | or the start of the range\n\ |
f1310107 TJB |
16178 | FUNCTION, for the first line in that function,\n\ |
16179 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16180 | *ADDRESS, for the instruction at that address.\n\ | |
16181 | \n\ | |
16182 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16183 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16184 | range (including START-LOCATION and END-LOCATION).")); | |
16185 | ||
e7e0cddf | 16186 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 16187 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 16188 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
16189 | location may be a linespec, explicit, or address location.\n" |
16190 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
16191 | set_cmd_completer (c, location_completer); |
16192 | ||
16193 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16194 | dprintf_style_enums, &dprintf_style, _("\ | |
16195 | Set the style of usage for dynamic printf."), _("\ | |
16196 | Show the style of usage for dynamic printf."), _("\ | |
16197 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16198 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16199 | console, as with the \"printf\" command.\n\ | |
16200 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16201 | program; by default printf(), but you can choose a different function or\n\ | |
16202 | output stream by setting dprintf-function and dprintf-channel."), | |
16203 | update_dprintf_commands, NULL, | |
16204 | &setlist, &showlist); | |
16205 | ||
16206 | dprintf_function = xstrdup ("printf"); | |
16207 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16208 | &dprintf_function, _("\ | |
590042fc PW |
16209 | Set the function to use for dynamic printf."), _("\ |
16210 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
16211 | update_dprintf_commands, NULL, |
16212 | &setlist, &showlist); | |
16213 | ||
16214 | dprintf_channel = xstrdup (""); | |
16215 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16216 | &dprintf_channel, _("\ | |
590042fc PW |
16217 | Set the channel to use for dynamic printf."), _("\ |
16218 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
16219 | update_dprintf_commands, NULL, |
16220 | &setlist, &showlist); | |
16221 | ||
d3ce09f5 SS |
16222 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16223 | &disconnected_dprintf, _("\ | |
16224 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16225 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16226 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16227 | even if GDB disconnects or detaches from the target."), | |
16228 | NULL, | |
16229 | NULL, | |
16230 | &setlist, &showlist); | |
16231 | ||
16232 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
16233 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
16234 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
16235 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
16236 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 16237 | |
491144b5 | 16238 | automatic_hardware_breakpoints = true; |
f3b1572e | 16239 | |
76727919 TT |
16240 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
16241 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 16242 | } |