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. |
4e5106e6 | 4 | Copyright (C) 2019-2020 Advanced Micro Devices, Inc. All rights reserved. |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "defs.h" | |
d55e5aa6 | 22 | #include "arch-utils.h" |
4de283e4 TT |
23 | #include <ctype.h> |
24 | #include "hashtab.h" | |
25 | #include "symtab.h" | |
26 | #include "frame.h" | |
c906108c | 27 | #include "breakpoint.h" |
4de283e4 TT |
28 | #include "tracepoint.h" |
29 | #include "gdbtypes.h" | |
c906108c | 30 | #include "expression.h" |
d55e5aa6 | 31 | #include "gdbcore.h" |
4de283e4 TT |
32 | #include "gdbcmd.h" |
33 | #include "value.h" | |
34 | #include "command.h" | |
c906108c | 35 | #include "inferior.h" |
45741a9c | 36 | #include "infrun.h" |
4de283e4 TT |
37 | #include "gdbthread.h" |
38 | #include "target.h" | |
c906108c | 39 | #include "language.h" |
4de283e4 TT |
40 | #include "gdb-demangle.h" |
41 | #include "filenames.h" | |
42 | #include "annotate.h" | |
43 | #include "symfile.h" | |
d55e5aa6 | 44 | #include "objfiles.h" |
4de283e4 TT |
45 | #include "source.h" |
46 | #include "linespec.h" | |
47 | #include "completer.h" | |
48 | #include "ui-out.h" | |
49 | #include "cli/cli-script.h" | |
50 | #include "block.h" | |
51 | #include "solib.h" | |
52 | #include "solist.h" | |
d55e5aa6 | 53 | #include "observable.h" |
4de283e4 TT |
54 | #include "memattr.h" |
55 | #include "ada-lang.h" | |
56 | #include "top.h" | |
57 | #include "valprint.h" | |
58 | #include "jit.h" | |
65d79d4b | 59 | #include "parser-defs.h" |
4de283e4 | 60 | #include "gdb_regex.h" |
55aa24fb | 61 | #include "probe.h" |
4de283e4 | 62 | #include "cli/cli-utils.h" |
d55e5aa6 | 63 | #include "stack.h" |
4de283e4 TT |
64 | #include "ax-gdb.h" |
65 | #include "dummy-frame.h" | |
66 | #include "interps.h" | |
268a13a5 | 67 | #include "gdbsupport/format.h" |
cfc31633 | 68 | #include "thread-fsm.h" |
5d5658a1 | 69 | #include "tid-parse.h" |
4de283e4 | 70 | #include "cli/cli-style.h" |
d3ce09f5 | 71 | |
1042e4c0 | 72 | /* readline include files */ |
073bbbb0 | 73 | #include "readline/tilde.h" |
1042e4c0 SS |
74 | |
75 | /* readline defines this. */ | |
76 | #undef savestring | |
77 | ||
034dad6f | 78 | #include "mi/mi-common.h" |
6dddc817 | 79 | #include "extension.h" |
325fac50 | 80 | #include <algorithm> |
5ed8105e | 81 | #include "progspace-and-thread.h" |
268a13a5 TT |
82 | #include "gdbsupport/array-view.h" |
83 | #include "gdbsupport/gdb_optional.h" | |
104c1213 | 84 | |
4a64f543 | 85 | /* Prototypes for local functions. */ |
c906108c | 86 | |
896b6bda | 87 | static void map_breakpoint_numbers (const char *, |
48649e1b | 88 | gdb::function_view<void (breakpoint *)>); |
c906108c | 89 | |
348d480f PA |
90 | static void breakpoint_re_set_default (struct breakpoint *); |
91 | ||
f00aae0f KS |
92 | static void |
93 | create_sals_from_location_default (const struct event_location *location, | |
94 | struct linespec_result *canonical, | |
95 | enum bptype type_wanted); | |
983af33b SDJ |
96 | |
97 | static void create_breakpoints_sal_default (struct gdbarch *, | |
98 | struct linespec_result *, | |
e1e01040 PA |
99 | gdb::unique_xmalloc_ptr<char>, |
100 | gdb::unique_xmalloc_ptr<char>, | |
101 | enum bptype, | |
983af33b SDJ |
102 | enum bpdisp, int, int, |
103 | int, | |
104 | const struct breakpoint_ops *, | |
44f238bb | 105 | int, int, int, unsigned); |
983af33b | 106 | |
6c5b2ebe PA |
107 | static std::vector<symtab_and_line> decode_location_default |
108 | (struct breakpoint *b, const struct event_location *location, | |
109 | struct program_space *search_pspace); | |
983af33b | 110 | |
a6535de1 TT |
111 | static int can_use_hardware_watchpoint |
112 | (const std::vector<value_ref_ptr> &vals); | |
c906108c | 113 | |
a14ed312 | 114 | static void mention (struct breakpoint *); |
c906108c | 115 | |
348d480f PA |
116 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
117 | enum bptype, | |
c0a91b2b | 118 | const struct breakpoint_ops *); |
3742cc8b YQ |
119 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
120 | const struct symtab_and_line *); | |
121 | ||
4a64f543 MS |
122 | /* This function is used in gdbtk sources and thus can not be made |
123 | static. */ | |
63c252f8 | 124 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 125 | struct symtab_and_line, |
c0a91b2b TT |
126 | enum bptype, |
127 | const struct breakpoint_ops *); | |
c906108c | 128 | |
06edf0c0 PA |
129 | static struct breakpoint * |
130 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
131 | enum bptype type, | |
a1aa2221 LM |
132 | const struct breakpoint_ops *ops, |
133 | int loc_enabled); | |
06edf0c0 | 134 | |
76897487 KB |
135 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
136 | ||
a6d9a66e UW |
137 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
138 | CORE_ADDR bpaddr, | |
88f7da05 | 139 | enum bptype bptype); |
76897487 | 140 | |
6c95b8df PA |
141 | static void describe_other_breakpoints (struct gdbarch *, |
142 | struct program_space *, CORE_ADDR, | |
5af949e3 | 143 | struct obj_section *, int); |
c906108c | 144 | |
85d721b8 PA |
145 | static int watchpoint_locations_match (struct bp_location *loc1, |
146 | struct bp_location *loc2); | |
147 | ||
f1310107 | 148 | static int breakpoint_location_address_match (struct bp_location *bl, |
accd0bcd | 149 | const struct address_space *aspace, |
f1310107 TJB |
150 | CORE_ADDR addr); |
151 | ||
d35ae833 | 152 | static int breakpoint_location_address_range_overlap (struct bp_location *, |
accd0bcd | 153 | const address_space *, |
d35ae833 PA |
154 | CORE_ADDR, int); |
155 | ||
834c0d03 | 156 | static int remove_breakpoint (struct bp_location *); |
b2b6a7da | 157 | static int remove_breakpoint_1 (struct bp_location *, enum remove_bp_reason); |
c906108c | 158 | |
e514a9d6 | 159 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 160 | |
a14ed312 | 161 | static int hw_breakpoint_used_count (void); |
c906108c | 162 | |
a1398e0c PA |
163 | static int hw_watchpoint_use_count (struct breakpoint *); |
164 | ||
165 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
166 | enum bptype type, | |
167 | int *other_type_used); | |
c906108c | 168 | |
816338b5 SS |
169 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
170 | int count); | |
c906108c | 171 | |
fe3f5fa8 | 172 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
173 | static void incref_bp_location (struct bp_location *loc); |
174 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 175 | |
39d61571 | 176 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 177 | |
44702360 PA |
178 | /* update_global_location_list's modes of operation wrt to whether to |
179 | insert locations now. */ | |
180 | enum ugll_insert_mode | |
181 | { | |
182 | /* Don't insert any breakpoint locations into the inferior, only | |
183 | remove already-inserted locations that no longer should be | |
184 | inserted. Functions that delete a breakpoint or breakpoints | |
185 | should specify this mode, so that deleting a breakpoint doesn't | |
186 | have the side effect of inserting the locations of other | |
187 | breakpoints that are marked not-inserted, but should_be_inserted | |
188 | returns true on them. | |
189 | ||
190 | This behavior is useful is situations close to tear-down -- e.g., | |
191 | after an exec, while the target still has execution, but | |
192 | breakpoint shadows of the previous executable image should *NOT* | |
193 | be restored to the new image; or before detaching, where the | |
194 | target still has execution and wants to delete breakpoints from | |
195 | GDB's lists, and all breakpoints had already been removed from | |
196 | the inferior. */ | |
197 | UGLL_DONT_INSERT, | |
198 | ||
a25a5a45 PA |
199 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
200 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
201 | UGLL_MAY_INSERT, |
202 | ||
a25a5a45 PA |
203 | /* Insert locations now, irrespective of |
204 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
205 | stopped right now, and the user did "continue". We need to | |
206 | insert breakpoints _before_ resuming the target, but | |
207 | UGLL_MAY_INSERT wouldn't insert them, because | |
208 | breakpoints_should_be_inserted_now returns false at that point, | |
209 | as no thread is running yet. */ | |
04086b45 | 210 | UGLL_INSERT |
44702360 PA |
211 | }; |
212 | ||
213 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 214 | |
44702360 | 215 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 216 | |
74960c60 | 217 | static void insert_breakpoint_locations (void); |
a5606eee | 218 | |
0b39b52e | 219 | static void trace_pass_command (const char *, int); |
1042e4c0 | 220 | |
558a9d82 YQ |
221 | static void set_tracepoint_count (int num); |
222 | ||
f2478a7e | 223 | static bool is_masked_watchpoint (const struct breakpoint *b); |
9c06b0b4 | 224 | |
b775012e LM |
225 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
226 | ||
983af33b SDJ |
227 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
228 | otherwise. */ | |
229 | ||
230 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 231 | |
2060206e PA |
232 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops |
233 | that are implemented on top of software or hardware breakpoints | |
234 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
235 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
236 | ||
237 | /* Internal breakpoints class type. */ | |
06edf0c0 | 238 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
239 | |
240 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
241 | static struct breakpoint_ops momentary_breakpoint_ops; |
242 | ||
2060206e PA |
243 | /* The breakpoint_ops structure to be used in regular user created |
244 | breakpoints. */ | |
245 | struct breakpoint_ops bkpt_breakpoint_ops; | |
246 | ||
55aa24fb SDJ |
247 | /* Breakpoints set on probes. */ |
248 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
249 | ||
bac7c5cf GB |
250 | /* Tracepoints set on probes. */ |
251 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
252 | ||
e7e0cddf | 253 | /* Dynamic printf class type. */ |
c5867ab6 | 254 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 255 | |
d3ce09f5 SS |
256 | /* The style in which to perform a dynamic printf. This is a user |
257 | option because different output options have different tradeoffs; | |
258 | if GDB does the printing, there is better error handling if there | |
259 | is a problem with any of the arguments, but using an inferior | |
260 | function lets you have special-purpose printers and sending of | |
261 | output to the same place as compiled-in print functions. */ | |
262 | ||
263 | static const char dprintf_style_gdb[] = "gdb"; | |
264 | static const char dprintf_style_call[] = "call"; | |
265 | static const char dprintf_style_agent[] = "agent"; | |
266 | static const char *const dprintf_style_enums[] = { | |
267 | dprintf_style_gdb, | |
268 | dprintf_style_call, | |
269 | dprintf_style_agent, | |
270 | NULL | |
271 | }; | |
272 | static const char *dprintf_style = dprintf_style_gdb; | |
273 | ||
274 | /* The function to use for dynamic printf if the preferred style is to | |
275 | call into the inferior. The value is simply a string that is | |
276 | copied into the command, so it can be anything that GDB can | |
277 | evaluate to a callable address, not necessarily a function name. */ | |
278 | ||
bde6261a | 279 | static char *dprintf_function; |
d3ce09f5 SS |
280 | |
281 | /* The channel to use for dynamic printf if the preferred style is to | |
282 | call into the inferior; if a nonempty string, it will be passed to | |
283 | the call as the first argument, with the format string as the | |
284 | second. As with the dprintf function, this can be anything that | |
285 | GDB knows how to evaluate, so in addition to common choices like | |
286 | "stderr", this could be an app-specific expression like | |
287 | "mystreams[curlogger]". */ | |
288 | ||
bde6261a | 289 | static char *dprintf_channel; |
d3ce09f5 SS |
290 | |
291 | /* True if dprintf commands should continue to operate even if GDB | |
292 | has disconnected. */ | |
491144b5 | 293 | static bool disconnected_dprintf = true; |
d3ce09f5 | 294 | |
5cea2a26 PA |
295 | struct command_line * |
296 | breakpoint_commands (struct breakpoint *b) | |
297 | { | |
d1b0a7bf | 298 | return b->commands ? b->commands.get () : NULL; |
5cea2a26 | 299 | } |
3daf8fe5 | 300 | |
f3b1572e PA |
301 | /* Flag indicating that a command has proceeded the inferior past the |
302 | current breakpoint. */ | |
303 | ||
491144b5 | 304 | static bool breakpoint_proceeded; |
f3b1572e | 305 | |
956a9fb9 | 306 | const char * |
2cec12e5 AR |
307 | bpdisp_text (enum bpdisp disp) |
308 | { | |
4a64f543 MS |
309 | /* NOTE: the following values are a part of MI protocol and |
310 | represent values of 'disp' field returned when inferior stops at | |
311 | a breakpoint. */ | |
bc043ef3 | 312 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 313 | |
2cec12e5 AR |
314 | return bpdisps[(int) disp]; |
315 | } | |
c906108c | 316 | |
4a64f543 | 317 | /* Prototypes for exported functions. */ |
c906108c | 318 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 319 | if such is available. */ |
c906108c SS |
320 | static int can_use_hw_watchpoints; |
321 | ||
920d2a44 AC |
322 | static void |
323 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
324 | struct cmd_list_element *c, | |
325 | const char *value) | |
326 | { | |
3e43a32a MS |
327 | fprintf_filtered (file, |
328 | _("Debugger's willingness to use " | |
329 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
330 | value); |
331 | } | |
332 | ||
fa8d40ab JJ |
333 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
334 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 335 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
336 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
337 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
338 | static void |
339 | show_pending_break_support (struct ui_file *file, int from_tty, | |
340 | struct cmd_list_element *c, | |
341 | const char *value) | |
342 | { | |
3e43a32a MS |
343 | fprintf_filtered (file, |
344 | _("Debugger's behavior regarding " | |
345 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
346 | value); |
347 | } | |
fa8d40ab | 348 | |
491144b5 | 349 | /* If true, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 350 | set with "break" but falling in read-only memory. |
491144b5 | 351 | If false, gdb will warn about such breakpoints, but won't automatically |
765dc015 | 352 | use hardware breakpoints. */ |
491144b5 | 353 | static bool automatic_hardware_breakpoints; |
765dc015 VP |
354 | static void |
355 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
356 | struct cmd_list_element *c, | |
357 | const char *value) | |
358 | { | |
3e43a32a MS |
359 | fprintf_filtered (file, |
360 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
361 | value); |
362 | } | |
363 | ||
a25a5a45 PA |
364 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
365 | stopped, and immediately inserts any new breakpoints as soon as | |
366 | they're created. If off (default), GDB keeps breakpoints off of | |
367 | the target as long as possible. That is, it delays inserting | |
368 | breakpoints until the next resume, and removes them again when the | |
369 | target fully stops. This is a bit safer in case GDB crashes while | |
370 | processing user input. */ | |
5922befa LM |
371 | /* FIXME: this is a temporary workaround to make sure waves created while |
372 | all known threads are stopped, and the gdb prompt is presented, do not | |
373 | execute past the enabled breakpoints. */ | |
374 | static bool always_inserted_mode = true; | |
72d0e2c5 | 375 | |
33e5cbd6 | 376 | static void |
74960c60 | 377 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 378 | struct cmd_list_element *c, const char *value) |
74960c60 | 379 | { |
a25a5a45 PA |
380 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
381 | value); | |
74960c60 VP |
382 | } |
383 | ||
b57bacec PA |
384 | /* See breakpoint.h. */ |
385 | ||
33e5cbd6 | 386 | int |
a25a5a45 | 387 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 388 | { |
a25a5a45 PA |
389 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
390 | { | |
391 | /* If breakpoints are global, they should be inserted even if no | |
392 | thread under gdb's control is running, or even if there are | |
393 | no threads under GDB's control yet. */ | |
394 | return 1; | |
395 | } | |
5b6d1e4f | 396 | else |
a25a5a45 | 397 | { |
a25a5a45 PA |
398 | if (always_inserted_mode) |
399 | { | |
400 | /* The user wants breakpoints inserted even if all threads | |
401 | are stopped. */ | |
402 | return 1; | |
403 | } | |
404 | ||
5b6d1e4f PA |
405 | for (inferior *inf : all_inferiors ()) |
406 | if (inf->has_execution () | |
407 | && threads_are_executing (inf->process_target ())) | |
408 | return 1; | |
372316f1 PA |
409 | |
410 | /* Don't remove breakpoints yet if, even though all threads are | |
411 | stopped, we still have events to process. */ | |
08036331 | 412 | for (thread_info *tp : all_non_exited_threads ()) |
372316f1 PA |
413 | if (tp->resumed |
414 | && tp->suspend.waitstatus_pending_p) | |
415 | return 1; | |
a25a5a45 PA |
416 | } |
417 | return 0; | |
33e5cbd6 | 418 | } |
765dc015 | 419 | |
b775012e LM |
420 | static const char condition_evaluation_both[] = "host or target"; |
421 | ||
422 | /* Modes for breakpoint condition evaluation. */ | |
423 | static const char condition_evaluation_auto[] = "auto"; | |
424 | static const char condition_evaluation_host[] = "host"; | |
425 | static const char condition_evaluation_target[] = "target"; | |
426 | static const char *const condition_evaluation_enums[] = { | |
427 | condition_evaluation_auto, | |
428 | condition_evaluation_host, | |
429 | condition_evaluation_target, | |
430 | NULL | |
431 | }; | |
432 | ||
433 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
434 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
435 | ||
436 | /* Global that we use to display information to the user (gets its value from | |
437 | condition_evaluation_mode_1. */ | |
438 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
439 | ||
440 | /* Translate a condition evaluation mode MODE into either "host" | |
441 | or "target". This is used mostly to translate from "auto" to the | |
442 | real setting that is being used. It returns the translated | |
443 | evaluation mode. */ | |
444 | ||
445 | static const char * | |
446 | translate_condition_evaluation_mode (const char *mode) | |
447 | { | |
448 | if (mode == condition_evaluation_auto) | |
449 | { | |
450 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
451 | return condition_evaluation_target; | |
452 | else | |
453 | return condition_evaluation_host; | |
454 | } | |
455 | else | |
456 | return mode; | |
457 | } | |
458 | ||
459 | /* Discovers what condition_evaluation_auto translates to. */ | |
460 | ||
461 | static const char * | |
462 | breakpoint_condition_evaluation_mode (void) | |
463 | { | |
464 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
465 | } | |
466 | ||
467 | /* Return true if GDB should evaluate breakpoint conditions or false | |
468 | otherwise. */ | |
469 | ||
470 | static int | |
471 | gdb_evaluates_breakpoint_condition_p (void) | |
472 | { | |
473 | const char *mode = breakpoint_condition_evaluation_mode (); | |
474 | ||
475 | return (mode == condition_evaluation_host); | |
476 | } | |
477 | ||
c906108c SS |
478 | /* Are we executing breakpoint commands? */ |
479 | static int executing_breakpoint_commands; | |
480 | ||
c02f5703 MS |
481 | /* Are overlay event breakpoints enabled? */ |
482 | static int overlay_events_enabled; | |
483 | ||
e09342b5 | 484 | /* See description in breakpoint.h. */ |
491144b5 | 485 | bool target_exact_watchpoints = false; |
e09342b5 | 486 | |
c906108c | 487 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 488 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 489 | current breakpoint. */ |
c906108c | 490 | |
5c44784c | 491 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 492 | |
5c44784c JM |
493 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
494 | for (B = breakpoint_chain; \ | |
495 | B ? (TMP=B->next, 1): 0; \ | |
496 | B = TMP) | |
c906108c | 497 | |
4a64f543 MS |
498 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
499 | not provided so update_global_location_list must not be called | |
500 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 501 | |
876fa593 | 502 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
f5336ca5 PA |
503 | for (BP_TMP = bp_locations; \ |
504 | BP_TMP < bp_locations + bp_locations_count && (B = *BP_TMP);\ | |
876fa593 | 505 | BP_TMP++) |
7cc221ef | 506 | |
b775012e LM |
507 | /* Iterates through locations with address ADDRESS for the currently selected |
508 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
509 | to where the loop should start from. | |
510 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
511 | appropriate location to start with. */ | |
512 | ||
513 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
514 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
515 | BP_LOCP_TMP = BP_LOCP_START; \ | |
516 | BP_LOCP_START \ | |
f5336ca5 | 517 | && (BP_LOCP_TMP < bp_locations + bp_locations_count \ |
b775012e LM |
518 | && (*BP_LOCP_TMP)->address == ADDRESS); \ |
519 | BP_LOCP_TMP++) | |
520 | ||
1042e4c0 SS |
521 | /* Iterator for tracepoints only. */ |
522 | ||
523 | #define ALL_TRACEPOINTS(B) \ | |
524 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 525 | if (is_tracepoint (B)) |
1042e4c0 | 526 | |
7cc221ef | 527 | /* Chains of all breakpoints defined. */ |
c906108c | 528 | |
81e6b8eb | 529 | static struct breakpoint *breakpoint_chain; |
c906108c | 530 | |
39ef2f62 | 531 | /* Array is sorted by bp_location_is_less_than - primarily by the ADDRESS. */ |
876fa593 | 532 | |
f5336ca5 | 533 | static struct bp_location **bp_locations; |
876fa593 | 534 | |
f5336ca5 | 535 | /* Number of elements of BP_LOCATIONS. */ |
876fa593 | 536 | |
f5336ca5 | 537 | static unsigned bp_locations_count; |
876fa593 | 538 | |
4a64f543 | 539 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
f5336ca5 | 540 | ADDRESS for the current elements of BP_LOCATIONS which get a valid |
4a64f543 | 541 | result from bp_location_has_shadow. You can use it for roughly |
f5336ca5 | 542 | limiting the subrange of BP_LOCATIONS to scan for shadow bytes for |
4a64f543 | 543 | an address you need to read. */ |
876fa593 | 544 | |
f5336ca5 | 545 | static CORE_ADDR bp_locations_placed_address_before_address_max; |
876fa593 | 546 | |
4a64f543 MS |
547 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
548 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
f5336ca5 PA |
549 | BP_LOCATIONS which get a valid result from bp_location_has_shadow. |
550 | You can use it for roughly limiting the subrange of BP_LOCATIONS to | |
4a64f543 | 551 | scan for shadow bytes for an address you need to read. */ |
876fa593 | 552 | |
f5336ca5 | 553 | static CORE_ADDR bp_locations_shadow_len_after_address_max; |
7cc221ef | 554 | |
4a64f543 | 555 | /* The locations that no longer correspond to any breakpoint, unlinked |
f5336ca5 PA |
556 | from the bp_locations array, but for which a hit may still be |
557 | reported by a target. */ | |
1123588c | 558 | static std::vector<bp_location *> moribund_locations; |
20874c92 | 559 | |
c906108c SS |
560 | /* Number of last breakpoint made. */ |
561 | ||
95a42b64 TT |
562 | static int breakpoint_count; |
563 | ||
86b17b60 PA |
564 | /* The value of `breakpoint_count' before the last command that |
565 | created breakpoints. If the last (break-like) command created more | |
566 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
567 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
568 | static int prev_breakpoint_count; | |
c906108c | 569 | |
1042e4c0 SS |
570 | /* Number of last tracepoint made. */ |
571 | ||
95a42b64 | 572 | static int tracepoint_count; |
1042e4c0 | 573 | |
6149aea9 PA |
574 | static struct cmd_list_element *breakpoint_set_cmdlist; |
575 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 576 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 577 | |
badd37ce SDJ |
578 | /* See declaration at breakpoint.h. */ |
579 | ||
580 | struct breakpoint * | |
581 | breakpoint_find_if (int (*func) (struct breakpoint *b, void *d), | |
582 | void *user_data) | |
583 | { | |
584 | struct breakpoint *b = NULL; | |
585 | ||
586 | ALL_BREAKPOINTS (b) | |
587 | { | |
588 | if (func (b, user_data) != 0) | |
589 | break; | |
590 | } | |
591 | ||
592 | return b; | |
593 | } | |
594 | ||
468d015d JJ |
595 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
596 | static int | |
597 | breakpoint_enabled (struct breakpoint *b) | |
598 | { | |
0d381245 | 599 | return (b->enable_state == bp_enabled); |
468d015d JJ |
600 | } |
601 | ||
c906108c SS |
602 | /* Set breakpoint count to NUM. */ |
603 | ||
95a42b64 | 604 | static void |
fba45db2 | 605 | set_breakpoint_count (int num) |
c906108c | 606 | { |
86b17b60 | 607 | prev_breakpoint_count = breakpoint_count; |
c906108c | 608 | breakpoint_count = num; |
4fa62494 | 609 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
610 | } |
611 | ||
86b17b60 PA |
612 | /* Used by `start_rbreak_breakpoints' below, to record the current |
613 | breakpoint count before "rbreak" creates any breakpoint. */ | |
614 | static int rbreak_start_breakpoint_count; | |
615 | ||
95a42b64 TT |
616 | /* Called at the start an "rbreak" command to record the first |
617 | breakpoint made. */ | |
86b17b60 | 618 | |
c80049d3 | 619 | scoped_rbreak_breakpoints::scoped_rbreak_breakpoints () |
95a42b64 | 620 | { |
86b17b60 | 621 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
622 | } |
623 | ||
624 | /* Called at the end of an "rbreak" command to record the last | |
625 | breakpoint made. */ | |
86b17b60 | 626 | |
c80049d3 | 627 | scoped_rbreak_breakpoints::~scoped_rbreak_breakpoints () |
95a42b64 | 628 | { |
86b17b60 | 629 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
630 | } |
631 | ||
4a64f543 | 632 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
633 | |
634 | void | |
fba45db2 | 635 | clear_breakpoint_hit_counts (void) |
c906108c SS |
636 | { |
637 | struct breakpoint *b; | |
638 | ||
639 | ALL_BREAKPOINTS (b) | |
640 | b->hit_count = 0; | |
641 | } | |
642 | ||
c906108c | 643 | \f |
48cb2d85 VP |
644 | /* Return the breakpoint with the specified number, or NULL |
645 | if the number does not refer to an existing breakpoint. */ | |
646 | ||
647 | struct breakpoint * | |
648 | get_breakpoint (int num) | |
649 | { | |
650 | struct breakpoint *b; | |
651 | ||
652 | ALL_BREAKPOINTS (b) | |
653 | if (b->number == num) | |
654 | return b; | |
655 | ||
656 | return NULL; | |
657 | } | |
5c44784c | 658 | |
c906108c | 659 | \f |
adc36818 | 660 | |
b775012e LM |
661 | /* Mark locations as "conditions have changed" in case the target supports |
662 | evaluating conditions on its side. */ | |
663 | ||
664 | static void | |
665 | mark_breakpoint_modified (struct breakpoint *b) | |
666 | { | |
667 | struct bp_location *loc; | |
668 | ||
669 | /* This is only meaningful if the target is | |
670 | evaluating conditions and if the user has | |
671 | opted for condition evaluation on the target's | |
672 | side. */ | |
673 | if (gdb_evaluates_breakpoint_condition_p () | |
674 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
675 | return; | |
676 | ||
677 | if (!is_breakpoint (b)) | |
678 | return; | |
679 | ||
680 | for (loc = b->loc; loc; loc = loc->next) | |
681 | loc->condition_changed = condition_modified; | |
682 | } | |
683 | ||
684 | /* Mark location as "conditions have changed" in case the target supports | |
685 | evaluating conditions on its side. */ | |
686 | ||
687 | static void | |
688 | mark_breakpoint_location_modified (struct bp_location *loc) | |
689 | { | |
690 | /* This is only meaningful if the target is | |
691 | evaluating conditions and if the user has | |
692 | opted for condition evaluation on the target's | |
693 | side. */ | |
694 | if (gdb_evaluates_breakpoint_condition_p () | |
695 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
696 | ||
697 | return; | |
698 | ||
699 | if (!is_breakpoint (loc->owner)) | |
700 | return; | |
701 | ||
702 | loc->condition_changed = condition_modified; | |
703 | } | |
704 | ||
705 | /* Sets the condition-evaluation mode using the static global | |
706 | condition_evaluation_mode. */ | |
707 | ||
708 | static void | |
eb4c3f4a | 709 | set_condition_evaluation_mode (const char *args, int from_tty, |
b775012e LM |
710 | struct cmd_list_element *c) |
711 | { | |
b775012e LM |
712 | const char *old_mode, *new_mode; |
713 | ||
714 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
715 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
716 | { | |
717 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
718 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
719 | "Using host evaluation mode instead.")); | |
720 | return; | |
721 | } | |
722 | ||
723 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
724 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
725 | ||
abf1152a JK |
726 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
727 | settings was "auto". */ | |
728 | condition_evaluation_mode = condition_evaluation_mode_1; | |
729 | ||
b775012e LM |
730 | /* Only update the mode if the user picked a different one. */ |
731 | if (new_mode != old_mode) | |
732 | { | |
733 | struct bp_location *loc, **loc_tmp; | |
734 | /* If the user switched to a different evaluation mode, we | |
735 | need to synch the changes with the target as follows: | |
736 | ||
737 | "host" -> "target": Send all (valid) conditions to the target. | |
738 | "target" -> "host": Remove all the conditions from the target. | |
739 | */ | |
740 | ||
b775012e LM |
741 | if (new_mode == condition_evaluation_target) |
742 | { | |
743 | /* Mark everything modified and synch conditions with the | |
744 | target. */ | |
745 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
746 | mark_breakpoint_location_modified (loc); | |
747 | } | |
748 | else | |
749 | { | |
750 | /* Manually mark non-duplicate locations to synch conditions | |
751 | with the target. We do this to remove all the conditions the | |
752 | target knows about. */ | |
753 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
754 | if (is_breakpoint (loc->owner) && loc->inserted) | |
755 | loc->needs_update = 1; | |
756 | } | |
757 | ||
758 | /* Do the update. */ | |
44702360 | 759 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
760 | } |
761 | ||
762 | return; | |
763 | } | |
764 | ||
765 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
766 | what "auto" is translating to. */ | |
767 | ||
768 | static void | |
769 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
770 | struct cmd_list_element *c, const char *value) | |
771 | { | |
772 | if (condition_evaluation_mode == condition_evaluation_auto) | |
773 | fprintf_filtered (file, | |
774 | _("Breakpoint condition evaluation " | |
775 | "mode is %s (currently %s).\n"), | |
776 | value, | |
777 | breakpoint_condition_evaluation_mode ()); | |
778 | else | |
779 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
780 | value); | |
781 | } | |
782 | ||
783 | /* A comparison function for bp_location AP and BP that is used by | |
784 | bsearch. This comparison function only cares about addresses, unlike | |
39ef2f62 | 785 | the more general bp_location_is_less_than function. */ |
b775012e LM |
786 | |
787 | static int | |
f5336ca5 | 788 | bp_locations_compare_addrs (const void *ap, const void *bp) |
b775012e | 789 | { |
9a3c8263 SM |
790 | const struct bp_location *a = *(const struct bp_location **) ap; |
791 | const struct bp_location *b = *(const struct bp_location **) bp; | |
b775012e LM |
792 | |
793 | if (a->address == b->address) | |
794 | return 0; | |
795 | else | |
796 | return ((a->address > b->address) - (a->address < b->address)); | |
797 | } | |
798 | ||
799 | /* Helper function to skip all bp_locations with addresses | |
800 | less than ADDRESS. It returns the first bp_location that | |
801 | is greater than or equal to ADDRESS. If none is found, just | |
802 | return NULL. */ | |
803 | ||
804 | static struct bp_location ** | |
805 | get_first_locp_gte_addr (CORE_ADDR address) | |
806 | { | |
807 | struct bp_location dummy_loc; | |
808 | struct bp_location *dummy_locp = &dummy_loc; | |
809 | struct bp_location **locp_found = NULL; | |
810 | ||
811 | /* Initialize the dummy location's address field. */ | |
b775012e LM |
812 | dummy_loc.address = address; |
813 | ||
814 | /* Find a close match to the first location at ADDRESS. */ | |
9a3c8263 | 815 | locp_found = ((struct bp_location **) |
f5336ca5 | 816 | bsearch (&dummy_locp, bp_locations, bp_locations_count, |
9a3c8263 | 817 | sizeof (struct bp_location **), |
f5336ca5 | 818 | bp_locations_compare_addrs)); |
b775012e LM |
819 | |
820 | /* Nothing was found, nothing left to do. */ | |
821 | if (locp_found == NULL) | |
822 | return NULL; | |
823 | ||
824 | /* We may have found a location that is at ADDRESS but is not the first in the | |
825 | location's list. Go backwards (if possible) and locate the first one. */ | |
f5336ca5 | 826 | while ((locp_found - 1) >= bp_locations |
b775012e LM |
827 | && (*(locp_found - 1))->address == address) |
828 | locp_found--; | |
829 | ||
830 | return locp_found; | |
831 | } | |
832 | ||
adc36818 | 833 | void |
7a26bd4d | 834 | set_breakpoint_condition (struct breakpoint *b, const char *exp, |
adc36818 PM |
835 | int from_tty) |
836 | { | |
3a5c3e22 PA |
837 | xfree (b->cond_string); |
838 | b->cond_string = NULL; | |
adc36818 | 839 | |
3a5c3e22 | 840 | if (is_watchpoint (b)) |
adc36818 | 841 | { |
3a5c3e22 PA |
842 | struct watchpoint *w = (struct watchpoint *) b; |
843 | ||
4d01a485 | 844 | w->cond_exp.reset (); |
3a5c3e22 PA |
845 | } |
846 | else | |
847 | { | |
848 | struct bp_location *loc; | |
849 | ||
850 | for (loc = b->loc; loc; loc = loc->next) | |
851 | { | |
4d01a485 | 852 | loc->cond.reset (); |
b775012e LM |
853 | |
854 | /* No need to free the condition agent expression | |
855 | bytecode (if we have one). We will handle this | |
856 | when we go through update_global_location_list. */ | |
3a5c3e22 | 857 | } |
adc36818 | 858 | } |
adc36818 PM |
859 | |
860 | if (*exp == 0) | |
861 | { | |
862 | if (from_tty) | |
863 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
864 | } | |
865 | else | |
866 | { | |
bbc13ae3 | 867 | const char *arg = exp; |
cc59ec59 | 868 | |
adc36818 PM |
869 | /* I don't know if it matters whether this is the string the user |
870 | typed in or the decompiled expression. */ | |
871 | b->cond_string = xstrdup (arg); | |
872 | b->condition_not_parsed = 0; | |
873 | ||
874 | if (is_watchpoint (b)) | |
875 | { | |
3a5c3e22 PA |
876 | struct watchpoint *w = (struct watchpoint *) b; |
877 | ||
699bd4cf | 878 | innermost_block_tracker tracker; |
adc36818 | 879 | arg = exp; |
699bd4cf | 880 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); |
adc36818 PM |
881 | if (*arg) |
882 | error (_("Junk at end of expression")); | |
699bd4cf | 883 | w->cond_exp_valid_block = tracker.block (); |
adc36818 PM |
884 | } |
885 | else | |
886 | { | |
3a5c3e22 PA |
887 | struct bp_location *loc; |
888 | ||
adc36818 PM |
889 | for (loc = b->loc; loc; loc = loc->next) |
890 | { | |
891 | arg = exp; | |
892 | loc->cond = | |
1bb9788d TT |
893 | parse_exp_1 (&arg, loc->address, |
894 | block_for_pc (loc->address), 0); | |
adc36818 PM |
895 | if (*arg) |
896 | error (_("Junk at end of expression")); | |
897 | } | |
898 | } | |
899 | } | |
b775012e LM |
900 | mark_breakpoint_modified (b); |
901 | ||
76727919 | 902 | gdb::observers::breakpoint_modified.notify (b); |
adc36818 PM |
903 | } |
904 | ||
d55637df TT |
905 | /* Completion for the "condition" command. */ |
906 | ||
eb3ff9a5 | 907 | static void |
6f937416 | 908 | condition_completer (struct cmd_list_element *cmd, |
eb3ff9a5 | 909 | completion_tracker &tracker, |
6f937416 | 910 | const char *text, const char *word) |
d55637df | 911 | { |
6f937416 | 912 | const char *space; |
d55637df | 913 | |
f1735a53 TT |
914 | text = skip_spaces (text); |
915 | space = skip_to_space (text); | |
d55637df TT |
916 | if (*space == '\0') |
917 | { | |
918 | int len; | |
919 | struct breakpoint *b; | |
d55637df TT |
920 | |
921 | if (text[0] == '$') | |
922 | { | |
923 | /* We don't support completion of history indices. */ | |
eb3ff9a5 PA |
924 | if (!isdigit (text[1])) |
925 | complete_internalvar (tracker, &text[1]); | |
926 | return; | |
d55637df TT |
927 | } |
928 | ||
929 | /* We're completing the breakpoint number. */ | |
930 | len = strlen (text); | |
931 | ||
932 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
933 | { |
934 | char number[50]; | |
935 | ||
936 | xsnprintf (number, sizeof (number), "%d", b->number); | |
937 | ||
938 | if (strncmp (number, text, len) == 0) | |
b02f78f9 | 939 | tracker.add_completion (make_unique_xstrdup (number)); |
58ce7251 | 940 | } |
d55637df | 941 | |
eb3ff9a5 | 942 | return; |
d55637df TT |
943 | } |
944 | ||
945 | /* We're completing the expression part. */ | |
f1735a53 | 946 | text = skip_spaces (space); |
eb3ff9a5 | 947 | expression_completer (cmd, tracker, text, word); |
d55637df TT |
948 | } |
949 | ||
c906108c SS |
950 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
951 | ||
952 | static void | |
0b39b52e | 953 | condition_command (const char *arg, int from_tty) |
c906108c | 954 | { |
52f0bd74 | 955 | struct breakpoint *b; |
0b39b52e | 956 | const char *p; |
52f0bd74 | 957 | int bnum; |
c906108c SS |
958 | |
959 | if (arg == 0) | |
e2e0b3e5 | 960 | error_no_arg (_("breakpoint number")); |
c906108c SS |
961 | |
962 | p = arg; | |
963 | bnum = get_number (&p); | |
5c44784c | 964 | if (bnum == 0) |
8a3fe4f8 | 965 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
966 | |
967 | ALL_BREAKPOINTS (b) | |
968 | if (b->number == bnum) | |
2f069f6f | 969 | { |
6dddc817 DE |
970 | /* Check if this breakpoint has a "stop" method implemented in an |
971 | extension language. This method and conditions entered into GDB | |
972 | from the CLI are mutually exclusive. */ | |
973 | const struct extension_language_defn *extlang | |
974 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
975 | ||
976 | if (extlang != NULL) | |
977 | { | |
978 | error (_("Only one stop condition allowed. There is currently" | |
979 | " a %s stop condition defined for this breakpoint."), | |
980 | ext_lang_capitalized_name (extlang)); | |
981 | } | |
2566ad2d | 982 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
983 | |
984 | if (is_breakpoint (b)) | |
44702360 | 985 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 986 | |
2f069f6f JB |
987 | return; |
988 | } | |
c906108c | 989 | |
8a3fe4f8 | 990 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
991 | } |
992 | ||
a7bdde9e VP |
993 | /* Check that COMMAND do not contain commands that are suitable |
994 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
995 | Throw if any such commands is found. */ |
996 | ||
a7bdde9e VP |
997 | static void |
998 | check_no_tracepoint_commands (struct command_line *commands) | |
999 | { | |
1000 | struct command_line *c; | |
cc59ec59 | 1001 | |
a7bdde9e VP |
1002 | for (c = commands; c; c = c->next) |
1003 | { | |
a7bdde9e | 1004 | if (c->control_type == while_stepping_control) |
3e43a32a MS |
1005 | error (_("The 'while-stepping' command can " |
1006 | "only be used for tracepoints")); | |
a7bdde9e | 1007 | |
12973681 TT |
1008 | check_no_tracepoint_commands (c->body_list_0.get ()); |
1009 | check_no_tracepoint_commands (c->body_list_1.get ()); | |
a7bdde9e VP |
1010 | |
1011 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1012 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1013 | command directly. */ |
1014 | if (strstr (c->line, "collect ") == c->line) | |
1015 | error (_("The 'collect' command can only be used for tracepoints")); | |
1016 | ||
51661e93 VP |
1017 | if (strstr (c->line, "teval ") == c->line) |
1018 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1019 | } |
1020 | } | |
1021 | ||
c1fc2657 | 1022 | struct longjmp_breakpoint : public breakpoint |
3b0871f4 | 1023 | { |
c1fc2657 | 1024 | ~longjmp_breakpoint () override; |
3b0871f4 SM |
1025 | }; |
1026 | ||
d77f58be SS |
1027 | /* Encapsulate tests for different types of tracepoints. */ |
1028 | ||
3b0871f4 SM |
1029 | static bool |
1030 | is_tracepoint_type (bptype type) | |
d9b3f62e PA |
1031 | { |
1032 | return (type == bp_tracepoint | |
1033 | || type == bp_fast_tracepoint | |
1034 | || type == bp_static_tracepoint); | |
1035 | } | |
1036 | ||
3b0871f4 SM |
1037 | static bool |
1038 | is_longjmp_type (bptype type) | |
1039 | { | |
1040 | return type == bp_longjmp || type == bp_exception; | |
1041 | } | |
1042 | ||
f2478a7e SM |
1043 | /* See breakpoint.h. */ |
1044 | ||
1045 | bool | |
d77f58be | 1046 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1047 | { |
d9b3f62e | 1048 | return is_tracepoint_type (b->type); |
a7bdde9e | 1049 | } |
d9b3f62e | 1050 | |
a5e364af SM |
1051 | /* Factory function to create an appropriate instance of breakpoint given |
1052 | TYPE. */ | |
1053 | ||
1054 | static std::unique_ptr<breakpoint> | |
1055 | new_breakpoint_from_type (bptype type) | |
1056 | { | |
1057 | breakpoint *b; | |
1058 | ||
1059 | if (is_tracepoint_type (type)) | |
c1fc2657 | 1060 | b = new tracepoint (); |
3b0871f4 | 1061 | else if (is_longjmp_type (type)) |
c1fc2657 | 1062 | b = new longjmp_breakpoint (); |
a5e364af SM |
1063 | else |
1064 | b = new breakpoint (); | |
1065 | ||
1066 | return std::unique_ptr<breakpoint> (b); | |
1067 | } | |
1068 | ||
e5dd4106 | 1069 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1070 | breakpoint. This function will throw an exception if a problem is |
1071 | found. */ | |
48cb2d85 | 1072 | |
95a42b64 TT |
1073 | static void |
1074 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1075 | struct command_line *commands) | |
48cb2d85 | 1076 | { |
d77f58be | 1077 | if (is_tracepoint (b)) |
a7bdde9e | 1078 | { |
c9a6ce02 | 1079 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1080 | struct command_line *c; |
1081 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1082 | |
1083 | /* Reset the while-stepping step count. The previous commands | |
1084 | might have included a while-stepping action, while the new | |
1085 | ones might not. */ | |
1086 | t->step_count = 0; | |
1087 | ||
1088 | /* We need to verify that each top-level element of commands is | |
1089 | valid for tracepoints, that there's at most one | |
1090 | while-stepping element, and that the while-stepping's body | |
1091 | has valid tracing commands excluding nested while-stepping. | |
1092 | We also need to validate the tracepoint action line in the | |
1093 | context of the tracepoint --- validate_actionline actually | |
1094 | has side effects, like setting the tracepoint's | |
1095 | while-stepping STEP_COUNT, in addition to checking if the | |
1096 | collect/teval actions parse and make sense in the | |
1097 | tracepoint's context. */ | |
a7bdde9e VP |
1098 | for (c = commands; c; c = c->next) |
1099 | { | |
a7bdde9e VP |
1100 | if (c->control_type == while_stepping_control) |
1101 | { | |
1102 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1103 | error (_("The 'while-stepping' command " |
1104 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1105 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1106 | error (_("The 'while-stepping' command " |
1107 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1108 | |
1109 | if (while_stepping) | |
3e43a32a MS |
1110 | error (_("The 'while-stepping' command " |
1111 | "can be used only once")); | |
a7bdde9e VP |
1112 | else |
1113 | while_stepping = c; | |
1114 | } | |
c9a6ce02 PA |
1115 | |
1116 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1117 | } |
1118 | if (while_stepping) | |
1119 | { | |
1120 | struct command_line *c2; | |
1121 | ||
12973681 TT |
1122 | gdb_assert (while_stepping->body_list_1 == nullptr); |
1123 | c2 = while_stepping->body_list_0.get (); | |
a7bdde9e VP |
1124 | for (; c2; c2 = c2->next) |
1125 | { | |
a7bdde9e VP |
1126 | if (c2->control_type == while_stepping_control) |
1127 | error (_("The 'while-stepping' command cannot be nested")); | |
1128 | } | |
1129 | } | |
1130 | } | |
1131 | else | |
1132 | { | |
1133 | check_no_tracepoint_commands (commands); | |
1134 | } | |
95a42b64 TT |
1135 | } |
1136 | ||
0fb4aa4b PA |
1137 | /* Return a vector of all the static tracepoints set at ADDR. The |
1138 | caller is responsible for releasing the vector. */ | |
1139 | ||
f51e0e20 | 1140 | std::vector<breakpoint *> |
0fb4aa4b PA |
1141 | static_tracepoints_here (CORE_ADDR addr) |
1142 | { | |
1143 | struct breakpoint *b; | |
f51e0e20 | 1144 | std::vector<breakpoint *> found; |
0fb4aa4b PA |
1145 | struct bp_location *loc; |
1146 | ||
1147 | ALL_BREAKPOINTS (b) | |
1148 | if (b->type == bp_static_tracepoint) | |
1149 | { | |
1150 | for (loc = b->loc; loc; loc = loc->next) | |
1151 | if (loc->address == addr) | |
f51e0e20 | 1152 | found.push_back (b); |
0fb4aa4b PA |
1153 | } |
1154 | ||
1155 | return found; | |
1156 | } | |
1157 | ||
95a42b64 | 1158 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1159 | validate that only allowed commands are included. */ |
95a42b64 TT |
1160 | |
1161 | void | |
4a64f543 | 1162 | breakpoint_set_commands (struct breakpoint *b, |
12973681 | 1163 | counted_command_line &&commands) |
95a42b64 | 1164 | { |
93921405 | 1165 | validate_commands_for_breakpoint (b, commands.get ()); |
a7bdde9e | 1166 | |
d1b0a7bf | 1167 | b->commands = std::move (commands); |
76727919 | 1168 | gdb::observers::breakpoint_modified.notify (b); |
48cb2d85 VP |
1169 | } |
1170 | ||
45a43567 TT |
1171 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1172 | is not the same as the "silent" that may appear in the breakpoint's | |
1173 | commands. */ | |
1174 | ||
1175 | void | |
1176 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1177 | { | |
1178 | int old_silent = b->silent; | |
1179 | ||
1180 | b->silent = silent; | |
1181 | if (old_silent != silent) | |
76727919 | 1182 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1183 | } |
1184 | ||
1185 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1186 | breakpoint work for any thread. */ | |
1187 | ||
1188 | void | |
1189 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1190 | { | |
1191 | int old_thread = b->thread; | |
1192 | ||
1193 | b->thread = thread; | |
1194 | if (old_thread != thread) | |
76727919 | 1195 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1196 | } |
1197 | ||
1198 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1199 | breakpoint work for any task. */ | |
1200 | ||
1201 | void | |
1202 | breakpoint_set_task (struct breakpoint *b, int task) | |
1203 | { | |
1204 | int old_task = b->task; | |
1205 | ||
1206 | b->task = task; | |
1207 | if (old_task != task) | |
76727919 | 1208 | gdb::observers::breakpoint_modified.notify (b); |
45a43567 TT |
1209 | } |
1210 | ||
95a42b64 | 1211 | static void |
896b6bda | 1212 | commands_command_1 (const char *arg, int from_tty, |
4a64f543 | 1213 | struct command_line *control) |
95a42b64 | 1214 | { |
d1b0a7bf | 1215 | counted_command_line cmd; |
999700cd PW |
1216 | /* cmd_read will be true once we have read cmd. Note that cmd might still be |
1217 | NULL after the call to read_command_lines if the user provides an empty | |
1218 | list of command by just typing "end". */ | |
1219 | bool cmd_read = false; | |
95a42b64 | 1220 | |
896b6bda PA |
1221 | std::string new_arg; |
1222 | ||
95a42b64 TT |
1223 | if (arg == NULL || !*arg) |
1224 | { | |
86b17b60 | 1225 | if (breakpoint_count - prev_breakpoint_count > 1) |
896b6bda PA |
1226 | new_arg = string_printf ("%d-%d", prev_breakpoint_count + 1, |
1227 | breakpoint_count); | |
95a42b64 | 1228 | else if (breakpoint_count > 0) |
896b6bda | 1229 | new_arg = string_printf ("%d", breakpoint_count); |
48649e1b TT |
1230 | arg = new_arg.c_str (); |
1231 | } | |
1232 | ||
1233 | map_breakpoint_numbers | |
1234 | (arg, [&] (breakpoint *b) | |
1235 | { | |
999700cd | 1236 | if (!cmd_read) |
48649e1b | 1237 | { |
999700cd | 1238 | gdb_assert (cmd == NULL); |
48649e1b | 1239 | if (control != NULL) |
12973681 | 1240 | cmd = control->body_list_0; |
48649e1b TT |
1241 | else |
1242 | { | |
81b1e71c TT |
1243 | std::string str |
1244 | = string_printf (_("Type commands for breakpoint(s) " | |
1245 | "%s, one per line."), | |
1246 | arg); | |
48649e1b | 1247 | |
60b3cef2 TT |
1248 | auto do_validate = [=] (const char *line) |
1249 | { | |
1250 | validate_actionline (line, b); | |
1251 | }; | |
1252 | gdb::function_view<void (const char *)> validator; | |
1253 | if (is_tracepoint (b)) | |
1254 | validator = do_validate; | |
1255 | ||
1256 | cmd = read_command_lines (str.c_str (), from_tty, 1, validator); | |
48649e1b | 1257 | } |
999700cd | 1258 | cmd_read = true; |
48649e1b TT |
1259 | } |
1260 | ||
1261 | /* If a breakpoint was on the list more than once, we don't need to | |
1262 | do anything. */ | |
1263 | if (b->commands != cmd) | |
1264 | { | |
d1b0a7bf | 1265 | validate_commands_for_breakpoint (b, cmd.get ()); |
48649e1b | 1266 | b->commands = cmd; |
76727919 | 1267 | gdb::observers::breakpoint_modified.notify (b); |
48649e1b TT |
1268 | } |
1269 | }); | |
95a42b64 TT |
1270 | } |
1271 | ||
1272 | static void | |
0b39b52e | 1273 | commands_command (const char *arg, int from_tty) |
95a42b64 TT |
1274 | { |
1275 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1276 | } |
40c03ae8 EZ |
1277 | |
1278 | /* Like commands_command, but instead of reading the commands from | |
1279 | input stream, takes them from an already parsed command structure. | |
1280 | ||
1281 | This is used by cli-script.c to DTRT with breakpoint commands | |
1282 | that are part of if and while bodies. */ | |
1283 | enum command_control_type | |
896b6bda | 1284 | commands_from_control_command (const char *arg, struct command_line *cmd) |
40c03ae8 | 1285 | { |
95a42b64 TT |
1286 | commands_command_1 (arg, 0, cmd); |
1287 | return simple_control; | |
40c03ae8 | 1288 | } |
876fa593 JK |
1289 | |
1290 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1291 | ||
1292 | static int | |
1293 | bp_location_has_shadow (struct bp_location *bl) | |
1294 | { | |
1295 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1296 | return 0; | |
1297 | if (!bl->inserted) | |
1298 | return 0; | |
1299 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1300 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1301 | return 0; |
1302 | return 1; | |
1303 | } | |
1304 | ||
9d497a19 PA |
1305 | /* Update BUF, which is LEN bytes read from the target address |
1306 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1307 | contents. | |
1308 | ||
1309 | If READBUF is not NULL, this buffer must not overlap with the of | |
1310 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1311 | failed assertion internal error will be raised. */ | |
1312 | ||
1313 | static void | |
1314 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1315 | const gdb_byte *writebuf_org, | |
1316 | ULONGEST memaddr, LONGEST len, | |
1317 | struct bp_target_info *target_info, | |
1318 | struct gdbarch *gdbarch) | |
1319 | { | |
1320 | /* Now do full processing of the found relevant range of elements. */ | |
1321 | CORE_ADDR bp_addr = 0; | |
1322 | int bp_size = 0; | |
1323 | int bptoffset = 0; | |
1324 | ||
1325 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1326 | current_program_space->aspace, 0)) | |
1327 | { | |
1328 | /* The breakpoint is inserted in a different address space. */ | |
1329 | return; | |
1330 | } | |
1331 | ||
1332 | /* Addresses and length of the part of the breakpoint that | |
1333 | we need to copy. */ | |
1334 | bp_addr = target_info->placed_address; | |
1335 | bp_size = target_info->shadow_len; | |
1336 | ||
1337 | if (bp_addr + bp_size <= memaddr) | |
1338 | { | |
1339 | /* The breakpoint is entirely before the chunk of memory we are | |
1340 | reading. */ | |
1341 | return; | |
1342 | } | |
1343 | ||
1344 | if (bp_addr >= memaddr + len) | |
1345 | { | |
1346 | /* The breakpoint is entirely after the chunk of memory we are | |
1347 | reading. */ | |
1348 | return; | |
1349 | } | |
1350 | ||
1351 | /* Offset within shadow_contents. */ | |
1352 | if (bp_addr < memaddr) | |
1353 | { | |
1354 | /* Only copy the second part of the breakpoint. */ | |
1355 | bp_size -= memaddr - bp_addr; | |
1356 | bptoffset = memaddr - bp_addr; | |
1357 | bp_addr = memaddr; | |
1358 | } | |
1359 | ||
1360 | if (bp_addr + bp_size > memaddr + len) | |
1361 | { | |
1362 | /* Only copy the first part of the breakpoint. */ | |
1363 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1364 | } | |
1365 | ||
1366 | if (readbuf != NULL) | |
1367 | { | |
1368 | /* Verify that the readbuf buffer does not overlap with the | |
1369 | shadow_contents buffer. */ | |
1370 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1371 | || readbuf >= (target_info->shadow_contents | |
1372 | + target_info->shadow_len)); | |
1373 | ||
1374 | /* Update the read buffer with this inserted breakpoint's | |
1375 | shadow. */ | |
1376 | memcpy (readbuf + bp_addr - memaddr, | |
1377 | target_info->shadow_contents + bptoffset, bp_size); | |
1378 | } | |
1379 | else | |
1380 | { | |
1381 | const unsigned char *bp; | |
0d5ed153 MR |
1382 | CORE_ADDR addr = target_info->reqstd_address; |
1383 | int placed_size; | |
9d497a19 PA |
1384 | |
1385 | /* Update the shadow with what we want to write to memory. */ | |
1386 | memcpy (target_info->shadow_contents + bptoffset, | |
1387 | writebuf_org + bp_addr - memaddr, bp_size); | |
1388 | ||
1389 | /* Determine appropriate breakpoint contents and size for this | |
1390 | address. */ | |
0d5ed153 | 1391 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1392 | |
1393 | /* Update the final write buffer with this inserted | |
1394 | breakpoint's INSN. */ | |
1395 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1396 | } | |
1397 | } | |
1398 | ||
8defab1a | 1399 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1400 | by replacing any memory breakpoints with their shadowed contents. |
1401 | ||
35c63cd8 JB |
1402 | If READBUF is not NULL, this buffer must not overlap with any of |
1403 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1404 | a failed assertion internal error will be raised. | |
1405 | ||
876fa593 | 1406 | The range of shadowed area by each bp_location is: |
f5336ca5 PA |
1407 | bl->address - bp_locations_placed_address_before_address_max |
1408 | up to bl->address + bp_locations_shadow_len_after_address_max | |
876fa593 JK |
1409 | The range we were requested to resolve shadows for is: |
1410 | memaddr ... memaddr + len | |
1411 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 | 1412 | memaddr + len <= (bl->address |
f5336ca5 | 1413 | - bp_locations_placed_address_before_address_max) |
876fa593 | 1414 | and: |
f5336ca5 | 1415 | bl->address + bp_locations_shadow_len_after_address_max <= memaddr */ |
c906108c | 1416 | |
8defab1a | 1417 | void |
f0ba3972 PA |
1418 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1419 | const gdb_byte *writebuf_org, | |
1420 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1421 | { |
4a64f543 MS |
1422 | /* Left boundary, right boundary and median element of our binary |
1423 | search. */ | |
876fa593 JK |
1424 | unsigned bc_l, bc_r, bc; |
1425 | ||
4a64f543 MS |
1426 | /* Find BC_L which is a leftmost element which may affect BUF |
1427 | content. It is safe to report lower value but a failure to | |
1428 | report higher one. */ | |
876fa593 JK |
1429 | |
1430 | bc_l = 0; | |
f5336ca5 | 1431 | bc_r = bp_locations_count; |
876fa593 JK |
1432 | while (bc_l + 1 < bc_r) |
1433 | { | |
35df4500 | 1434 | struct bp_location *bl; |
876fa593 JK |
1435 | |
1436 | bc = (bc_l + bc_r) / 2; | |
f5336ca5 | 1437 | bl = bp_locations[bc]; |
876fa593 | 1438 | |
4a64f543 MS |
1439 | /* Check first BL->ADDRESS will not overflow due to the added |
1440 | constant. Then advance the left boundary only if we are sure | |
1441 | the BC element can in no way affect the BUF content (MEMADDR | |
1442 | to MEMADDR + LEN range). | |
876fa593 | 1443 | |
f5336ca5 | 1444 | Use the BP_LOCATIONS_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
4a64f543 MS |
1445 | offset so that we cannot miss a breakpoint with its shadow |
1446 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1447 | |
f5336ca5 | 1448 | if ((bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1449 | >= bl->address) |
f5336ca5 | 1450 | && (bl->address + bp_locations_shadow_len_after_address_max |
35df4500 | 1451 | <= memaddr)) |
876fa593 JK |
1452 | bc_l = bc; |
1453 | else | |
1454 | bc_r = bc; | |
1455 | } | |
1456 | ||
128070bb PA |
1457 | /* Due to the binary search above, we need to make sure we pick the |
1458 | first location that's at BC_L's address. E.g., if there are | |
1459 | multiple locations at the same address, BC_L may end up pointing | |
1460 | at a duplicate location, and miss the "master"/"inserted" | |
1461 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1462 | B: | |
1463 | ||
1464 | L1@A, L2@A, L3@B, ... | |
1465 | ||
1466 | BC_L could end up pointing at location L2, while the "master" | |
1467 | location could be L1. Since the `loc->inserted' flag is only set | |
1468 | on "master" locations, we'd forget to restore the shadow of L1 | |
1469 | and L2. */ | |
1470 | while (bc_l > 0 | |
f5336ca5 | 1471 | && bp_locations[bc_l]->address == bp_locations[bc_l - 1]->address) |
128070bb PA |
1472 | bc_l--; |
1473 | ||
876fa593 JK |
1474 | /* Now do full processing of the found relevant range of elements. */ |
1475 | ||
f5336ca5 | 1476 | for (bc = bc_l; bc < bp_locations_count; bc++) |
c5aa993b | 1477 | { |
f5336ca5 | 1478 | struct bp_location *bl = bp_locations[bc]; |
876fa593 | 1479 | |
35df4500 TJB |
1480 | /* bp_location array has BL->OWNER always non-NULL. */ |
1481 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1482 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1483 | bl->owner->number); |
ffce0d52 | 1484 | |
e5dd4106 | 1485 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1486 | content. */ |
1487 | ||
f5336ca5 PA |
1488 | if (bl->address >= bp_locations_placed_address_before_address_max |
1489 | && memaddr + len <= (bl->address | |
1490 | - bp_locations_placed_address_before_address_max)) | |
876fa593 JK |
1491 | break; |
1492 | ||
35df4500 | 1493 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1494 | continue; |
6c95b8df | 1495 | |
9d497a19 PA |
1496 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1497 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1498 | } | |
c906108c | 1499 | } |
9d497a19 | 1500 | |
f2478a7e | 1501 | /* See breakpoint.h. */ |
b775012e | 1502 | |
f2478a7e | 1503 | bool |
b775012e LM |
1504 | is_breakpoint (const struct breakpoint *bpt) |
1505 | { | |
1506 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1507 | || bpt->type == bp_hardware_breakpoint |
1508 | || bpt->type == bp_dprintf); | |
b775012e LM |
1509 | } |
1510 | ||
60e1c644 PA |
1511 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1512 | ||
f2478a7e | 1513 | static bool |
d77f58be | 1514 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1515 | { |
1516 | return (bpt->type == bp_hardware_watchpoint | |
1517 | || bpt->type == bp_read_watchpoint | |
1518 | || bpt->type == bp_access_watchpoint); | |
1519 | } | |
7270d8f2 | 1520 | |
f2478a7e | 1521 | /* See breakpoint.h. */ |
60e1c644 | 1522 | |
f2478a7e | 1523 | bool |
d77f58be | 1524 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1525 | { |
1526 | return (is_hardware_watchpoint (bpt) | |
1527 | || bpt->type == bp_watchpoint); | |
1528 | } | |
1529 | ||
3a5c3e22 PA |
1530 | /* Returns true if the current thread and its running state are safe |
1531 | to evaluate or update watchpoint B. Watchpoints on local | |
1532 | expressions need to be evaluated in the context of the thread that | |
1533 | was current when the watchpoint was created, and, that thread needs | |
1534 | to be stopped to be able to select the correct frame context. | |
1535 | Watchpoints on global expressions can be evaluated on any thread, | |
1536 | and in any state. It is presently left to the target allowing | |
1537 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1538 | |
1539 | static int | |
3a5c3e22 | 1540 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1541 | { |
c1fc2657 | 1542 | return (b->pspace == current_program_space |
d7e15655 TT |
1543 | && (b->watchpoint_thread == null_ptid |
1544 | || (inferior_ptid == b->watchpoint_thread | |
00431a78 | 1545 | && !inferior_thread ()->executing))); |
f6bc2008 PA |
1546 | } |
1547 | ||
d0fb5eae JK |
1548 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1549 | associated bp_watchpoint_scope breakpoint. */ | |
1550 | ||
1551 | static void | |
3a5c3e22 | 1552 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1553 | { |
c1fc2657 | 1554 | if (w->related_breakpoint != w) |
d0fb5eae | 1555 | { |
c1fc2657 SM |
1556 | gdb_assert (w->related_breakpoint->type == bp_watchpoint_scope); |
1557 | gdb_assert (w->related_breakpoint->related_breakpoint == w); | |
1558 | w->related_breakpoint->disposition = disp_del_at_next_stop; | |
1559 | w->related_breakpoint->related_breakpoint = w->related_breakpoint; | |
1560 | w->related_breakpoint = w; | |
d0fb5eae | 1561 | } |
c1fc2657 | 1562 | w->disposition = disp_del_at_next_stop; |
d0fb5eae JK |
1563 | } |
1564 | ||
bb9d5f81 PP |
1565 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1566 | watchpoint W. */ | |
1567 | ||
1568 | static struct value * | |
1569 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1570 | { | |
1571 | struct value *bit_val; | |
1572 | ||
1573 | if (val == NULL) | |
1574 | return NULL; | |
1575 | ||
1576 | bit_val = allocate_value (value_type (val)); | |
1577 | ||
1578 | unpack_value_bitfield (bit_val, | |
1579 | w->val_bitpos, | |
1580 | w->val_bitsize, | |
1581 | value_contents_for_printing (val), | |
1582 | value_offset (val), | |
1583 | val); | |
1584 | ||
1585 | return bit_val; | |
1586 | } | |
1587 | ||
c6d81124 PA |
1588 | /* Allocate a dummy location and add it to B, which must be a software |
1589 | watchpoint. This is required because even if a software watchpoint | |
1590 | is not watching any memory, bpstat_stop_status requires a location | |
1591 | to be able to report stops. */ | |
1592 | ||
1593 | static void | |
1594 | software_watchpoint_add_no_memory_location (struct breakpoint *b, | |
1595 | struct program_space *pspace) | |
1596 | { | |
1597 | gdb_assert (b->type == bp_watchpoint && b->loc == NULL); | |
1598 | ||
1599 | b->loc = allocate_bp_location (b); | |
1600 | b->loc->pspace = pspace; | |
1601 | b->loc->address = -1; | |
1602 | b->loc->length = -1; | |
1603 | } | |
1604 | ||
1605 | /* Returns true if B is a software watchpoint that is not watching any | |
1606 | memory (e.g., "watch $pc"). */ | |
1607 | ||
f2478a7e | 1608 | static bool |
c6d81124 PA |
1609 | is_no_memory_software_watchpoint (struct breakpoint *b) |
1610 | { | |
1611 | return (b->type == bp_watchpoint | |
1612 | && b->loc != NULL | |
1613 | && b->loc->next == NULL | |
1614 | && b->loc->address == -1 | |
1615 | && b->loc->length == -1); | |
1616 | } | |
1617 | ||
567e1b4e JB |
1618 | /* Assuming that B is a watchpoint: |
1619 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1620 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1621 | - Evaluate the condition if there is one, and store the result |
1622 | in b->loc->cond. | |
a5606eee VP |
1623 | - Update the list of values that must be watched in B->loc. |
1624 | ||
4a64f543 MS |
1625 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1626 | nothing. If this is local watchpoint that is out of scope, delete | |
1627 | it. | |
1628 | ||
1629 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1630 | removed + inserted on each stop here. Normal breakpoints must | |
1631 | never be removed because they might be missed by a running thread | |
1632 | when debugging in non-stop mode. On the other hand, hardware | |
1633 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1634 | to each LWP since they are stored in each LWP's hardware debug | |
1635 | registers. Therefore, such LWP must be stopped first in order to | |
1636 | be able to modify its hardware watchpoints. | |
1637 | ||
1638 | Hardware watchpoints must be reset exactly once after being | |
1639 | presented to the user. It cannot be done sooner, because it would | |
1640 | reset the data used to present the watchpoint hit to the user. And | |
1641 | it must not be done later because it could display the same single | |
1642 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1643 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1644 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1645 | not user-visible - its hit is suppressed if the memory content has | |
1646 | not changed. | |
1647 | ||
1648 | The following constraints influence the location where we can reset | |
1649 | hardware watchpoints: | |
1650 | ||
1651 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1652 | called several times when GDB stops. | |
1653 | ||
1654 | [linux] | |
1655 | * Multiple hardware watchpoints can be hit at the same time, | |
1656 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1657 | hit at a time as the reason for stopping, and all the other hits | |
1658 | are presented later, one after the other, each time the user | |
1659 | requests the execution to be resumed. Execution is not resumed | |
1660 | for the threads still having pending hit event stored in | |
1661 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1662 | the inferior on the first stop the thread hit event is kept being | |
1663 | reported from its cached value by linux_nat_stopped_data_address | |
1664 | until the real thread resume happens after the watchpoint gets | |
1665 | presented and thus its LWP_INFO->STATUS gets reset. | |
1666 | ||
1667 | Therefore the hardware watchpoint hit can get safely reset on the | |
1668 | watchpoint removal from inferior. */ | |
a79d3c27 | 1669 | |
b40ce68a | 1670 | static void |
3a5c3e22 | 1671 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1672 | { |
a5606eee | 1673 | int within_current_scope; |
a5606eee | 1674 | struct frame_id saved_frame_id; |
66076460 | 1675 | int frame_saved; |
a5606eee | 1676 | |
f6bc2008 PA |
1677 | /* If this is a local watchpoint, we only want to check if the |
1678 | watchpoint frame is in scope if the current thread is the thread | |
1679 | that was used to create the watchpoint. */ | |
1680 | if (!watchpoint_in_thread_scope (b)) | |
1681 | return; | |
1682 | ||
c1fc2657 | 1683 | if (b->disposition == disp_del_at_next_stop) |
a5606eee VP |
1684 | return; |
1685 | ||
66076460 | 1686 | frame_saved = 0; |
a5606eee VP |
1687 | |
1688 | /* Determine if the watchpoint is within scope. */ | |
1689 | if (b->exp_valid_block == NULL) | |
1690 | within_current_scope = 1; | |
1691 | else | |
1692 | { | |
b5db5dfc UW |
1693 | struct frame_info *fi = get_current_frame (); |
1694 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1695 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1696 | ||
c9cf6e20 MG |
1697 | /* If we're at a point where the stack has been destroyed |
1698 | (e.g. in a function epilogue), unwinding may not work | |
1699 | properly. Do not attempt to recreate locations at this | |
b5db5dfc | 1700 | point. See similar comments in watchpoint_check. */ |
c9cf6e20 | 1701 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
b5db5dfc | 1702 | return; |
66076460 DJ |
1703 | |
1704 | /* Save the current frame's ID so we can restore it after | |
1705 | evaluating the watchpoint expression on its own frame. */ | |
1706 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1707 | took a frame parameter, so that we didn't have to change the | |
1708 | selected frame. */ | |
1709 | frame_saved = 1; | |
1710 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1711 | ||
a5606eee VP |
1712 | fi = frame_find_by_id (b->watchpoint_frame); |
1713 | within_current_scope = (fi != NULL); | |
1714 | if (within_current_scope) | |
1715 | select_frame (fi); | |
1716 | } | |
1717 | ||
b5db5dfc UW |
1718 | /* We don't free locations. They are stored in the bp_location array |
1719 | and update_global_location_list will eventually delete them and | |
1720 | remove breakpoints if needed. */ | |
c1fc2657 | 1721 | b->loc = NULL; |
b5db5dfc | 1722 | |
a5606eee VP |
1723 | if (within_current_scope && reparse) |
1724 | { | |
bbc13ae3 | 1725 | const char *s; |
d63d0675 | 1726 | |
4d01a485 | 1727 | b->exp.reset (); |
d63d0675 | 1728 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1729 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1730 | /* If the meaning of expression itself changed, the old value is |
1731 | no longer relevant. We don't want to report a watchpoint hit | |
1732 | to the user when the old value and the new value may actually | |
1733 | be completely different objects. */ | |
fa4727a6 | 1734 | b->val = NULL; |
4c1d86d9 | 1735 | b->val_valid = false; |
60e1c644 PA |
1736 | |
1737 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1738 | expression is stored in the breakpoint object, not in the | |
1739 | locations (re)created below. */ | |
c1fc2657 | 1740 | if (b->cond_string != NULL) |
60e1c644 | 1741 | { |
4d01a485 | 1742 | b->cond_exp.reset (); |
60e1c644 | 1743 | |
c1fc2657 | 1744 | s = b->cond_string; |
1bb9788d | 1745 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1746 | } |
a5606eee | 1747 | } |
a5606eee VP |
1748 | |
1749 | /* If we failed to parse the expression, for example because | |
1750 | it refers to a global variable in a not-yet-loaded shared library, | |
1751 | don't try to insert watchpoint. We don't automatically delete | |
1752 | such watchpoint, though, since failure to parse expression | |
1753 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1754 | if (!target_has_execution) |
2d134ed3 PA |
1755 | { |
1756 | /* Without execution, memory can't change. No use to try and | |
1757 | set watchpoint locations. The watchpoint will be reset when | |
1758 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1759 | if (!can_use_hw_watchpoints) |
1760 | { | |
c1fc2657 SM |
1761 | if (b->ops->works_in_software_mode (b)) |
1762 | b->type = bp_watchpoint; | |
e8369a73 | 1763 | else |
638aa5a1 AB |
1764 | error (_("Can't set read/access watchpoint when " |
1765 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1766 | } |
2d134ed3 PA |
1767 | } |
1768 | else if (within_current_scope && b->exp) | |
a5606eee | 1769 | { |
0cf6dd15 | 1770 | int pc = 0; |
a6535de1 | 1771 | std::vector<value_ref_ptr> val_chain; |
8d49165d | 1772 | struct value *v, *result; |
2d134ed3 | 1773 | struct program_space *frame_pspace; |
a5606eee | 1774 | |
4d01a485 | 1775 | fetch_subexp_value (b->exp.get (), &pc, &v, &result, &val_chain, 0); |
a5606eee | 1776 | |
a5606eee VP |
1777 | /* Avoid setting b->val if it's already set. The meaning of |
1778 | b->val is 'the last value' user saw, and we should update | |
1779 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1780 | happens, the code that reports it updates b->val directly. |
1781 | We don't keep track of the memory value for masked | |
1782 | watchpoints. */ | |
c1fc2657 | 1783 | if (!b->val_valid && !is_masked_watchpoint (b)) |
fa4727a6 | 1784 | { |
bb9d5f81 | 1785 | if (b->val_bitsize != 0) |
850645cf TT |
1786 | v = extract_bitfield_from_watchpoint_value (b, v); |
1787 | b->val = release_value (v); | |
4c1d86d9 | 1788 | b->val_valid = true; |
fa4727a6 | 1789 | } |
a5606eee | 1790 | |
2d134ed3 PA |
1791 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1792 | ||
a5606eee | 1793 | /* Look at each value on the value chain. */ |
a6535de1 TT |
1794 | gdb_assert (!val_chain.empty ()); |
1795 | for (const value_ref_ptr &iter : val_chain) | |
a5606eee | 1796 | { |
a6535de1 TT |
1797 | v = iter.get (); |
1798 | ||
a5606eee VP |
1799 | /* If it's a memory location, and GDB actually needed |
1800 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1801 | must watch it. If the first value returned is |
1802 | still lazy, that means an error occurred reading it; | |
1803 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1804 | if (VALUE_LVAL (v) == lval_memory |
a6535de1 | 1805 | && (v == val_chain[0] || ! value_lazy (v))) |
a5606eee VP |
1806 | { |
1807 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1808 | |
a5606eee VP |
1809 | /* We only watch structs and arrays if user asked |
1810 | for it explicitly, never if they just happen to | |
1811 | appear in the middle of some value chain. */ | |
fa4727a6 | 1812 | if (v == result |
a5606eee VP |
1813 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1814 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1815 | { | |
1816 | CORE_ADDR addr; | |
f486487f | 1817 | enum target_hw_bp_type type; |
a5606eee | 1818 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1819 | int bitpos = 0, bitsize = 0; |
1820 | ||
1821 | if (value_bitsize (v) != 0) | |
1822 | { | |
1823 | /* Extract the bit parameters out from the bitfield | |
1824 | sub-expression. */ | |
1825 | bitpos = value_bitpos (v); | |
1826 | bitsize = value_bitsize (v); | |
1827 | } | |
1828 | else if (v == result && b->val_bitsize != 0) | |
1829 | { | |
1830 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1831 | lvalue whose bit parameters are saved in the fields | |
1832 | VAL_BITPOS and VAL_BITSIZE. */ | |
1833 | bitpos = b->val_bitpos; | |
1834 | bitsize = b->val_bitsize; | |
1835 | } | |
a5606eee | 1836 | |
42ae5230 | 1837 | addr = value_address (v); |
bb9d5f81 PP |
1838 | if (bitsize != 0) |
1839 | { | |
1840 | /* Skip the bytes that don't contain the bitfield. */ | |
1841 | addr += bitpos / 8; | |
1842 | } | |
1843 | ||
a5606eee | 1844 | type = hw_write; |
c1fc2657 | 1845 | if (b->type == bp_read_watchpoint) |
a5606eee | 1846 | type = hw_read; |
c1fc2657 | 1847 | else if (b->type == bp_access_watchpoint) |
a5606eee | 1848 | type = hw_access; |
3a5c3e22 | 1849 | |
c1fc2657 SM |
1850 | loc = allocate_bp_location (b); |
1851 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1852 | ; |
1853 | *tmp = loc; | |
a6d9a66e | 1854 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1855 | |
1856 | loc->pspace = frame_pspace; | |
f17d9474 | 1857 | loc->address = address_significant (loc->gdbarch, addr); |
bb9d5f81 PP |
1858 | |
1859 | if (bitsize != 0) | |
1860 | { | |
1861 | /* Just cover the bytes that make up the bitfield. */ | |
1862 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
1863 | } | |
1864 | else | |
1865 | loc->length = TYPE_LENGTH (value_type (v)); | |
1866 | ||
a5606eee VP |
1867 | loc->watchpoint_type = type; |
1868 | } | |
1869 | } | |
9fa40276 TJB |
1870 | } |
1871 | ||
1872 | /* Change the type of breakpoint between hardware assisted or | |
1873 | an ordinary watchpoint depending on the hardware support | |
1874 | and free hardware slots. REPARSE is set when the inferior | |
1875 | is started. */ | |
a9634178 | 1876 | if (reparse) |
9fa40276 | 1877 | { |
e09342b5 | 1878 | int reg_cnt; |
9fa40276 TJB |
1879 | enum bp_loc_type loc_type; |
1880 | struct bp_location *bl; | |
a5606eee | 1881 | |
a9634178 | 1882 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1883 | |
1884 | if (reg_cnt) | |
9fa40276 TJB |
1885 | { |
1886 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1887 | enum bptype type; |
9fa40276 | 1888 | |
a9634178 TJB |
1889 | /* Use an exact watchpoint when there's only one memory region to be |
1890 | watched, and only one debug register is needed to watch it. */ | |
1891 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1892 | ||
9fa40276 | 1893 | /* We need to determine how many resources are already |
e09342b5 TJB |
1894 | used for all other hardware watchpoints plus this one |
1895 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1896 | this watchpoint in as well. */ |
1897 | ||
1898 | /* If this is a software watchpoint, we try to turn it | |
1899 | to a hardware one -- count resources as if B was of | |
1900 | hardware watchpoint type. */ | |
c1fc2657 | 1901 | type = b->type; |
a1398e0c PA |
1902 | if (type == bp_watchpoint) |
1903 | type = bp_hardware_watchpoint; | |
1904 | ||
1905 | /* This watchpoint may or may not have been placed on | |
1906 | the list yet at this point (it won't be in the list | |
1907 | if we're trying to create it for the first time, | |
1908 | through watch_command), so always account for it | |
1909 | manually. */ | |
1910 | ||
1911 | /* Count resources used by all watchpoints except B. */ | |
c1fc2657 | 1912 | i = hw_watchpoint_used_count_others (b, type, &other_type_used); |
a1398e0c PA |
1913 | |
1914 | /* Add in the resources needed for B. */ | |
c1fc2657 | 1915 | i += hw_watchpoint_use_count (b); |
a1398e0c PA |
1916 | |
1917 | target_resources_ok | |
1918 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1919 | if (target_resources_ok <= 0) |
a9634178 | 1920 | { |
c1fc2657 | 1921 | int sw_mode = b->ops->works_in_software_mode (b); |
9c06b0b4 TJB |
1922 | |
1923 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1924 | error (_("Target does not support this type of " |
1925 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1926 | else if (target_resources_ok < 0 && !sw_mode) |
1927 | error (_("There are not enough available hardware " | |
1928 | "resources for this watchpoint.")); | |
a1398e0c PA |
1929 | |
1930 | /* Downgrade to software watchpoint. */ | |
c1fc2657 | 1931 | b->type = bp_watchpoint; |
a1398e0c PA |
1932 | } |
1933 | else | |
1934 | { | |
1935 | /* If this was a software watchpoint, we've just | |
1936 | found we have enough resources to turn it to a | |
1937 | hardware watchpoint. Otherwise, this is a | |
1938 | nop. */ | |
c1fc2657 | 1939 | b->type = type; |
a9634178 | 1940 | } |
9fa40276 | 1941 | } |
c1fc2657 | 1942 | else if (!b->ops->works_in_software_mode (b)) |
638aa5a1 AB |
1943 | { |
1944 | if (!can_use_hw_watchpoints) | |
1945 | error (_("Can't set read/access watchpoint when " | |
1946 | "hardware watchpoints are disabled.")); | |
1947 | else | |
1948 | error (_("Expression cannot be implemented with " | |
1949 | "read/access watchpoint.")); | |
1950 | } | |
9fa40276 | 1951 | else |
c1fc2657 | 1952 | b->type = bp_watchpoint; |
9fa40276 | 1953 | |
c1fc2657 | 1954 | loc_type = (b->type == bp_watchpoint? bp_loc_other |
9fa40276 | 1955 | : bp_loc_hardware_watchpoint); |
c1fc2657 | 1956 | for (bl = b->loc; bl; bl = bl->next) |
9fa40276 TJB |
1957 | bl->loc_type = loc_type; |
1958 | } | |
1959 | ||
c7437ca6 PA |
1960 | /* If a software watchpoint is not watching any memory, then the |
1961 | above left it without any location set up. But, | |
1962 | bpstat_stop_status requires a location to be able to report | |
1963 | stops, so make sure there's at least a dummy one. */ | |
c1fc2657 SM |
1964 | if (b->type == bp_watchpoint && b->loc == NULL) |
1965 | software_watchpoint_add_no_memory_location (b, frame_pspace); | |
a5606eee VP |
1966 | } |
1967 | else if (!within_current_scope) | |
7270d8f2 | 1968 | { |
ac74f770 MS |
1969 | printf_filtered (_("\ |
1970 | Watchpoint %d deleted because the program has left the block\n\ | |
1971 | in which its expression is valid.\n"), | |
c1fc2657 | 1972 | b->number); |
d0fb5eae | 1973 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1974 | } |
a5606eee VP |
1975 | |
1976 | /* Restore the selected frame. */ | |
66076460 DJ |
1977 | if (frame_saved) |
1978 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1979 | } |
1980 | ||
a5606eee | 1981 | |
74960c60 | 1982 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1983 | inserted in the inferior. We don't differentiate the type of BL's owner |
1984 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1985 | breakpoint_ops is not defined, because in insert_bp_location, | |
1986 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1987 | static int |
35df4500 | 1988 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1989 | { |
35df4500 | 1990 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1991 | return 0; |
1992 | ||
35df4500 | 1993 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1994 | return 0; |
1995 | ||
35df4500 | 1996 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1997 | return 0; |
1998 | ||
f8eba3c6 TT |
1999 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2000 | return 0; | |
2001 | ||
56710373 PA |
2002 | /* This is set for example, when we're attached to the parent of a |
2003 | vfork, and have detached from the child. The child is running | |
2004 | free, and we expect it to do an exec or exit, at which point the | |
2005 | OS makes the parent schedulable again (and the target reports | |
2006 | that the vfork is done). Until the child is done with the shared | |
2007 | memory region, do not insert breakpoints in the parent, otherwise | |
2008 | the child could still trip on the parent's breakpoints. Since | |
2009 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2010 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2011 | return 0; |
2012 | ||
31e77af2 | 2013 | /* Don't insert a breakpoint if we're trying to step past its |
21edc42f YQ |
2014 | location, except if the breakpoint is a single-step breakpoint, |
2015 | and the breakpoint's thread is the thread which is stepping past | |
2016 | a breakpoint. */ | |
31e77af2 PA |
2017 | if ((bl->loc_type == bp_loc_software_breakpoint |
2018 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2019 | && stepping_past_instruction_at (bl->pspace->aspace, | |
21edc42f YQ |
2020 | bl->address) |
2021 | /* The single-step breakpoint may be inserted at the location | |
2022 | we're trying to step if the instruction branches to itself. | |
2023 | However, the instruction won't be executed at all and it may | |
2024 | break the semantics of the instruction, for example, the | |
2025 | instruction is a conditional branch or updates some flags. | |
2026 | We can't fix it unless GDB is able to emulate the instruction | |
2027 | or switch to displaced stepping. */ | |
2028 | && !(bl->owner->type == bp_single_step | |
2029 | && thread_is_stepping_over_breakpoint (bl->owner->thread))) | |
e558d7c1 PA |
2030 | { |
2031 | if (debug_infrun) | |
2032 | { | |
2033 | fprintf_unfiltered (gdb_stdlog, | |
2034 | "infrun: skipping breakpoint: " | |
2035 | "stepping past insn at: %s\n", | |
2036 | paddress (bl->gdbarch, bl->address)); | |
2037 | } | |
2038 | return 0; | |
2039 | } | |
31e77af2 | 2040 | |
963f9c80 PA |
2041 | /* Don't insert watchpoints if we're trying to step past the |
2042 | instruction that triggered one. */ | |
2043 | if ((bl->loc_type == bp_loc_hardware_watchpoint) | |
2044 | && stepping_past_nonsteppable_watchpoint ()) | |
2045 | { | |
2046 | if (debug_infrun) | |
2047 | { | |
2048 | fprintf_unfiltered (gdb_stdlog, | |
2049 | "infrun: stepping past non-steppable watchpoint. " | |
2050 | "skipping watchpoint at %s:%d\n", | |
2051 | paddress (bl->gdbarch, bl->address), | |
2052 | bl->length); | |
2053 | } | |
2054 | return 0; | |
2055 | } | |
2056 | ||
74960c60 VP |
2057 | return 1; |
2058 | } | |
2059 | ||
934709f0 PW |
2060 | /* Same as should_be_inserted but does the check assuming |
2061 | that the location is not duplicated. */ | |
2062 | ||
2063 | static int | |
2064 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2065 | { | |
2066 | int result; | |
2067 | const int save_duplicate = bl->duplicate; | |
2068 | ||
2069 | bl->duplicate = 0; | |
2070 | result = should_be_inserted (bl); | |
2071 | bl->duplicate = save_duplicate; | |
2072 | return result; | |
2073 | } | |
2074 | ||
b775012e LM |
2075 | /* Parses a conditional described by an expression COND into an |
2076 | agent expression bytecode suitable for evaluation | |
2077 | by the bytecode interpreter. Return NULL if there was | |
2078 | any error during parsing. */ | |
2079 | ||
833177a4 | 2080 | static agent_expr_up |
b775012e LM |
2081 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) |
2082 | { | |
833177a4 | 2083 | if (cond == NULL) |
b775012e LM |
2084 | return NULL; |
2085 | ||
833177a4 PA |
2086 | agent_expr_up aexpr; |
2087 | ||
b775012e LM |
2088 | /* We don't want to stop processing, so catch any errors |
2089 | that may show up. */ | |
a70b8144 | 2090 | try |
b775012e | 2091 | { |
036e657b | 2092 | aexpr = gen_eval_for_expr (scope, cond); |
b775012e LM |
2093 | } |
2094 | ||
230d2906 | 2095 | catch (const gdb_exception_error &ex) |
b775012e LM |
2096 | { |
2097 | /* If we got here, it means the condition could not be parsed to a valid | |
2098 | bytecode expression and thus can't be evaluated on the target's side. | |
2099 | It's no use iterating through the conditions. */ | |
b775012e LM |
2100 | } |
2101 | ||
2102 | /* We have a valid agent expression. */ | |
2103 | return aexpr; | |
2104 | } | |
2105 | ||
2106 | /* Based on location BL, create a list of breakpoint conditions to be | |
2107 | passed on to the target. If we have duplicated locations with different | |
2108 | conditions, we will add such conditions to the list. The idea is that the | |
2109 | target will evaluate the list of conditions and will only notify GDB when | |
2110 | one of them is true. */ | |
2111 | ||
2112 | static void | |
2113 | build_target_condition_list (struct bp_location *bl) | |
2114 | { | |
2115 | struct bp_location **locp = NULL, **loc2p; | |
2116 | int null_condition_or_parse_error = 0; | |
2117 | int modified = bl->needs_update; | |
2118 | struct bp_location *loc; | |
2119 | ||
8b4f3082 | 2120 | /* Release conditions left over from a previous insert. */ |
3cde5c42 | 2121 | bl->target_info.conditions.clear (); |
8b4f3082 | 2122 | |
b775012e LM |
2123 | /* This is only meaningful if the target is |
2124 | evaluating conditions and if the user has | |
2125 | opted for condition evaluation on the target's | |
2126 | side. */ | |
2127 | if (gdb_evaluates_breakpoint_condition_p () | |
2128 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2129 | return; | |
2130 | ||
2131 | /* Do a first pass to check for locations with no assigned | |
2132 | conditions or conditions that fail to parse to a valid agent expression | |
2133 | bytecode. If any of these happen, then it's no use to send conditions | |
2134 | to the target since this location will always trigger and generate a | |
2135 | response back to GDB. */ | |
2136 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2137 | { | |
2138 | loc = (*loc2p); | |
2139 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2140 | { | |
2141 | if (modified) | |
2142 | { | |
b775012e LM |
2143 | /* Re-parse the conditions since something changed. In that |
2144 | case we already freed the condition bytecodes (see | |
2145 | force_breakpoint_reinsertion). We just | |
2146 | need to parse the condition to bytecodes again. */ | |
833177a4 PA |
2147 | loc->cond_bytecode = parse_cond_to_aexpr (bl->address, |
2148 | loc->cond.get ()); | |
b775012e LM |
2149 | } |
2150 | ||
2151 | /* If we have a NULL bytecode expression, it means something | |
2152 | went wrong or we have a null condition expression. */ | |
2153 | if (!loc->cond_bytecode) | |
2154 | { | |
2155 | null_condition_or_parse_error = 1; | |
2156 | break; | |
2157 | } | |
2158 | } | |
2159 | } | |
2160 | ||
2161 | /* If any of these happened, it means we will have to evaluate the conditions | |
2162 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2163 | for all the other duplicate locations, thus we free all of them here. | |
2164 | ||
2165 | This is so we have a finer control over which locations' conditions are | |
2166 | being evaluated by GDB or the remote stub. */ | |
2167 | if (null_condition_or_parse_error) | |
2168 | { | |
2169 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2170 | { | |
2171 | loc = (*loc2p); | |
2172 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2173 | { | |
2174 | /* Only go as far as the first NULL bytecode is | |
2175 | located. */ | |
2176 | if (!loc->cond_bytecode) | |
2177 | return; | |
2178 | ||
833177a4 | 2179 | loc->cond_bytecode.reset (); |
b775012e LM |
2180 | } |
2181 | } | |
2182 | } | |
2183 | ||
2184 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2185 | for this location's address. */ | |
2186 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2187 | { | |
2188 | loc = (*loc2p); | |
2189 | if (loc->cond | |
2190 | && is_breakpoint (loc->owner) | |
2191 | && loc->pspace->num == bl->pspace->num | |
2192 | && loc->owner->enable_state == bp_enabled | |
2193 | && loc->enabled) | |
3cde5c42 PA |
2194 | { |
2195 | /* Add the condition to the vector. This will be used later | |
2196 | to send the conditions to the target. */ | |
2197 | bl->target_info.conditions.push_back (loc->cond_bytecode.get ()); | |
2198 | } | |
b775012e LM |
2199 | } |
2200 | ||
2201 | return; | |
2202 | } | |
2203 | ||
d3ce09f5 SS |
2204 | /* Parses a command described by string CMD into an agent expression |
2205 | bytecode suitable for evaluation by the bytecode interpreter. | |
2206 | Return NULL if there was any error during parsing. */ | |
2207 | ||
833177a4 | 2208 | static agent_expr_up |
d3ce09f5 SS |
2209 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) |
2210 | { | |
bbc13ae3 KS |
2211 | const char *cmdrest; |
2212 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2213 | struct gdbarch *gdbarch = get_current_arch (); |
2214 | ||
833177a4 | 2215 | if (cmd == NULL) |
d3ce09f5 SS |
2216 | return NULL; |
2217 | ||
2218 | cmdrest = cmd; | |
2219 | ||
2220 | if (*cmdrest == ',') | |
2221 | ++cmdrest; | |
f1735a53 | 2222 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2223 | |
2224 | if (*cmdrest++ != '"') | |
2225 | error (_("No format string following the location")); | |
2226 | ||
2227 | format_start = cmdrest; | |
2228 | ||
8e481c3b | 2229 | format_pieces fpieces (&cmdrest); |
d3ce09f5 SS |
2230 | |
2231 | format_end = cmdrest; | |
2232 | ||
2233 | if (*cmdrest++ != '"') | |
2234 | error (_("Bad format string, non-terminated '\"'.")); | |
2235 | ||
f1735a53 | 2236 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2237 | |
2238 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2239 | error (_("Invalid argument syntax")); | |
2240 | ||
2241 | if (*cmdrest == ',') | |
2242 | cmdrest++; | |
f1735a53 | 2243 | cmdrest = skip_spaces (cmdrest); |
d3ce09f5 SS |
2244 | |
2245 | /* For each argument, make an expression. */ | |
2246 | ||
8e481c3b | 2247 | std::vector<struct expression *> argvec; |
d3ce09f5 SS |
2248 | while (*cmdrest != '\0') |
2249 | { | |
bbc13ae3 | 2250 | const char *cmd1; |
d3ce09f5 SS |
2251 | |
2252 | cmd1 = cmdrest; | |
4d01a485 | 2253 | expression_up expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); |
8e481c3b | 2254 | argvec.push_back (expr.release ()); |
d3ce09f5 SS |
2255 | cmdrest = cmd1; |
2256 | if (*cmdrest == ',') | |
2257 | ++cmdrest; | |
2258 | } | |
2259 | ||
833177a4 PA |
2260 | agent_expr_up aexpr; |
2261 | ||
d3ce09f5 SS |
2262 | /* We don't want to stop processing, so catch any errors |
2263 | that may show up. */ | |
a70b8144 | 2264 | try |
d3ce09f5 | 2265 | { |
036e657b JB |
2266 | aexpr = gen_printf (scope, gdbarch, 0, 0, |
2267 | format_start, format_end - format_start, | |
8e481c3b | 2268 | argvec.size (), argvec.data ()); |
d3ce09f5 | 2269 | } |
230d2906 | 2270 | catch (const gdb_exception_error &ex) |
d3ce09f5 SS |
2271 | { |
2272 | /* If we got here, it means the command could not be parsed to a valid | |
2273 | bytecode expression and thus can't be evaluated on the target's side. | |
2274 | It's no use iterating through the other commands. */ | |
d3ce09f5 | 2275 | } |
492d29ea | 2276 | |
d3ce09f5 SS |
2277 | /* We have a valid agent expression, return it. */ |
2278 | return aexpr; | |
2279 | } | |
2280 | ||
2281 | /* Based on location BL, create a list of breakpoint commands to be | |
2282 | passed on to the target. If we have duplicated locations with | |
2283 | different commands, we will add any such to the list. */ | |
2284 | ||
2285 | static void | |
2286 | build_target_command_list (struct bp_location *bl) | |
2287 | { | |
2288 | struct bp_location **locp = NULL, **loc2p; | |
2289 | int null_command_or_parse_error = 0; | |
2290 | int modified = bl->needs_update; | |
2291 | struct bp_location *loc; | |
2292 | ||
3cde5c42 PA |
2293 | /* Clear commands left over from a previous insert. */ |
2294 | bl->target_info.tcommands.clear (); | |
8b4f3082 | 2295 | |
41fac0cf | 2296 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2297 | return; |
2298 | ||
41fac0cf PA |
2299 | /* For now, limit to agent-style dprintf breakpoints. */ |
2300 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2301 | return; |
2302 | ||
41fac0cf PA |
2303 | /* For now, if we have any duplicate location that isn't a dprintf, |
2304 | don't install the target-side commands, as that would make the | |
2305 | breakpoint not be reported to the core, and we'd lose | |
2306 | control. */ | |
2307 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2308 | { | |
2309 | loc = (*loc2p); | |
2310 | if (is_breakpoint (loc->owner) | |
2311 | && loc->pspace->num == bl->pspace->num | |
2312 | && loc->owner->type != bp_dprintf) | |
2313 | return; | |
2314 | } | |
2315 | ||
d3ce09f5 SS |
2316 | /* Do a first pass to check for locations with no assigned |
2317 | conditions or conditions that fail to parse to a valid agent expression | |
2318 | bytecode. If any of these happen, then it's no use to send conditions | |
2319 | to the target since this location will always trigger and generate a | |
2320 | response back to GDB. */ | |
2321 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2322 | { | |
2323 | loc = (*loc2p); | |
2324 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2325 | { | |
2326 | if (modified) | |
2327 | { | |
d3ce09f5 SS |
2328 | /* Re-parse the commands since something changed. In that |
2329 | case we already freed the command bytecodes (see | |
2330 | force_breakpoint_reinsertion). We just | |
2331 | need to parse the command to bytecodes again. */ | |
833177a4 PA |
2332 | loc->cmd_bytecode |
2333 | = parse_cmd_to_aexpr (bl->address, | |
2334 | loc->owner->extra_string); | |
d3ce09f5 SS |
2335 | } |
2336 | ||
2337 | /* If we have a NULL bytecode expression, it means something | |
2338 | went wrong or we have a null command expression. */ | |
2339 | if (!loc->cmd_bytecode) | |
2340 | { | |
2341 | null_command_or_parse_error = 1; | |
2342 | break; | |
2343 | } | |
2344 | } | |
2345 | } | |
2346 | ||
2347 | /* If anything failed, then we're not doing target-side commands, | |
2348 | and so clean up. */ | |
2349 | if (null_command_or_parse_error) | |
2350 | { | |
2351 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2352 | { | |
2353 | loc = (*loc2p); | |
2354 | if (is_breakpoint (loc->owner) | |
2355 | && loc->pspace->num == bl->pspace->num) | |
2356 | { | |
2357 | /* Only go as far as the first NULL bytecode is | |
2358 | located. */ | |
40fb6c5e | 2359 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2360 | return; |
2361 | ||
833177a4 | 2362 | loc->cmd_bytecode.reset (); |
d3ce09f5 SS |
2363 | } |
2364 | } | |
2365 | } | |
2366 | ||
2367 | /* No NULL commands or failed bytecode generation. Build a command list | |
2368 | for this location's address. */ | |
2369 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2370 | { | |
2371 | loc = (*loc2p); | |
2372 | if (loc->owner->extra_string | |
2373 | && is_breakpoint (loc->owner) | |
2374 | && loc->pspace->num == bl->pspace->num | |
2375 | && loc->owner->enable_state == bp_enabled | |
2376 | && loc->enabled) | |
3cde5c42 PA |
2377 | { |
2378 | /* Add the command to the vector. This will be used later | |
2379 | to send the commands to the target. */ | |
2380 | bl->target_info.tcommands.push_back (loc->cmd_bytecode.get ()); | |
2381 | } | |
d3ce09f5 SS |
2382 | } |
2383 | ||
2384 | bl->target_info.persist = 0; | |
2385 | /* Maybe flag this location as persistent. */ | |
2386 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2387 | bl->target_info.persist = 1; | |
2388 | } | |
2389 | ||
833b7ab5 YQ |
2390 | /* Return the kind of breakpoint on address *ADDR. Get the kind |
2391 | of breakpoint according to ADDR except single-step breakpoint. | |
2392 | Get the kind of single-step breakpoint according to the current | |
2393 | registers state. */ | |
cd6c3b4f YQ |
2394 | |
2395 | static int | |
2396 | breakpoint_kind (struct bp_location *bl, CORE_ADDR *addr) | |
2397 | { | |
833b7ab5 YQ |
2398 | if (bl->owner->type == bp_single_step) |
2399 | { | |
2400 | struct thread_info *thr = find_thread_global_id (bl->owner->thread); | |
2401 | struct regcache *regcache; | |
2402 | ||
00431a78 | 2403 | regcache = get_thread_regcache (thr); |
833b7ab5 YQ |
2404 | |
2405 | return gdbarch_breakpoint_kind_from_current_state (bl->gdbarch, | |
2406 | regcache, addr); | |
2407 | } | |
2408 | else | |
2409 | return gdbarch_breakpoint_kind_from_pc (bl->gdbarch, addr); | |
cd6c3b4f YQ |
2410 | } |
2411 | ||
35df4500 TJB |
2412 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2413 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2414 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2415 | Returns 0 for success, 1 if the bp_location type is not supported or |
2416 | -1 for failure. | |
879bfdc2 | 2417 | |
4a64f543 MS |
2418 | NOTE drow/2003-09-09: This routine could be broken down to an |
2419 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2420 | static int |
35df4500 | 2421 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2422 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2423 | int *disabled_breaks, |
dd61ec5c MW |
2424 | int *hw_breakpoint_error, |
2425 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2426 | { |
cc06b668 | 2427 | gdb_exception bp_excpt; |
879bfdc2 | 2428 | |
b775012e | 2429 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2430 | return 0; |
2431 | ||
35c63cd8 JB |
2432 | /* Note we don't initialize bl->target_info, as that wipes out |
2433 | the breakpoint location's shadow_contents if the breakpoint | |
2434 | is still inserted at that location. This in turn breaks | |
2435 | target_read_memory which depends on these buffers when | |
2436 | a memory read is requested at the breakpoint location: | |
2437 | Once the target_info has been wiped, we fail to see that | |
2438 | we have a breakpoint inserted at that address and thus | |
2439 | read the breakpoint instead of returning the data saved in | |
2440 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2441 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2442 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2443 | bl->target_info.length = bl->length; |
8181d85f | 2444 | |
b775012e LM |
2445 | /* When working with target-side conditions, we must pass all the conditions |
2446 | for the same breakpoint address down to the target since GDB will not | |
2447 | insert those locations. With a list of breakpoint conditions, the target | |
2448 | can decide when to stop and notify GDB. */ | |
2449 | ||
2450 | if (is_breakpoint (bl->owner)) | |
2451 | { | |
2452 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2453 | build_target_command_list (bl); |
2454 | /* Reset the modification marker. */ | |
b775012e LM |
2455 | bl->needs_update = 0; |
2456 | } | |
2457 | ||
35df4500 TJB |
2458 | if (bl->loc_type == bp_loc_software_breakpoint |
2459 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2460 | { |
35df4500 | 2461 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2462 | { |
2463 | /* If the explicitly specified breakpoint type | |
2464 | is not hardware breakpoint, check the memory map to see | |
2465 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2466 | |
765dc015 VP |
2467 | Two important cases are: |
2468 | - location type is not hardware breakpoint, memory | |
2469 | is readonly. We change the type of the location to | |
2470 | hardware breakpoint. | |
4a64f543 MS |
2471 | - location type is hardware breakpoint, memory is |
2472 | read-write. This means we've previously made the | |
2473 | location hardware one, but then the memory map changed, | |
2474 | so we undo. | |
765dc015 | 2475 | |
4a64f543 MS |
2476 | When breakpoints are removed, remove_breakpoints will use |
2477 | location types we've just set here, the only possible | |
2478 | problem is that memory map has changed during running | |
2479 | program, but it's not going to work anyway with current | |
2480 | gdb. */ | |
765dc015 | 2481 | struct mem_region *mr |
0d5ed153 | 2482 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2483 | |
2484 | if (mr) | |
2485 | { | |
2486 | if (automatic_hardware_breakpoints) | |
2487 | { | |
765dc015 VP |
2488 | enum bp_loc_type new_type; |
2489 | ||
2490 | if (mr->attrib.mode != MEM_RW) | |
2491 | new_type = bp_loc_hardware_breakpoint; | |
2492 | else | |
2493 | new_type = bp_loc_software_breakpoint; | |
2494 | ||
35df4500 | 2495 | if (new_type != bl->loc_type) |
765dc015 VP |
2496 | { |
2497 | static int said = 0; | |
cc59ec59 | 2498 | |
35df4500 | 2499 | bl->loc_type = new_type; |
765dc015 VP |
2500 | if (!said) |
2501 | { | |
3e43a32a MS |
2502 | fprintf_filtered (gdb_stdout, |
2503 | _("Note: automatically using " | |
2504 | "hardware breakpoints for " | |
2505 | "read-only addresses.\n")); | |
765dc015 VP |
2506 | said = 1; |
2507 | } | |
2508 | } | |
2509 | } | |
35df4500 | 2510 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2511 | && mr->attrib.mode != MEM_RW) |
2512 | { | |
2513 | fprintf_unfiltered (tmp_error_stream, | |
2514 | _("Cannot insert breakpoint %d.\n" | |
2515 | "Cannot set software breakpoint " | |
2516 | "at read-only address %s\n"), | |
2517 | bl->owner->number, | |
2518 | paddress (bl->gdbarch, bl->address)); | |
2519 | return 1; | |
2520 | } | |
765dc015 VP |
2521 | } |
2522 | } | |
2523 | ||
879bfdc2 DJ |
2524 | /* First check to see if we have to handle an overlay. */ |
2525 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2526 | || bl->section == NULL |
2527 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2528 | { |
2529 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2530 | try |
dd61ec5c | 2531 | { |
0000e5cc PA |
2532 | int val; |
2533 | ||
dd61ec5c | 2534 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2535 | if (val) |
688fca4f | 2536 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2537 | } |
94aeb44b | 2538 | catch (gdb_exception &e) |
dd61ec5c | 2539 | { |
94aeb44b | 2540 | bp_excpt = std::move (e); |
dd61ec5c | 2541 | } |
879bfdc2 DJ |
2542 | } |
2543 | else | |
2544 | { | |
4a64f543 | 2545 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2546 | Shall we set a breakpoint at the LMA? */ |
2547 | if (!overlay_events_enabled) | |
2548 | { | |
2549 | /* Yes -- overlay event support is not active, | |
2550 | so we must try to set a breakpoint at the LMA. | |
2551 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2552 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2553 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2554 | bl->owner->number); |
879bfdc2 DJ |
2555 | else |
2556 | { | |
35df4500 TJB |
2557 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2558 | bl->section); | |
879bfdc2 | 2559 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2560 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2561 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2562 | |
2563 | /* No overlay handling: just set the breakpoint. */ | |
a70b8144 | 2564 | try |
0000e5cc PA |
2565 | { |
2566 | int val; | |
2567 | ||
579c6ad9 | 2568 | bl->overlay_target_info.kind |
cd6c3b4f YQ |
2569 | = breakpoint_kind (bl, &addr); |
2570 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2571 | val = target_insert_breakpoint (bl->gdbarch, |
2572 | &bl->overlay_target_info); | |
2573 | if (val) | |
688fca4f PA |
2574 | bp_excpt |
2575 | = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; | |
0000e5cc | 2576 | } |
94aeb44b | 2577 | catch (gdb_exception &e) |
0000e5cc | 2578 | { |
94aeb44b | 2579 | bp_excpt = std::move (e); |
0000e5cc PA |
2580 | } |
2581 | ||
688fca4f | 2582 | if (bp_excpt.reason != 0) |
99361f52 | 2583 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2584 | "Overlay breakpoint %d " |
2585 | "failed: in ROM?\n", | |
35df4500 | 2586 | bl->owner->number); |
879bfdc2 DJ |
2587 | } |
2588 | } | |
2589 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2590 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2591 | { |
2592 | /* Yes. This overlay section is mapped into memory. */ | |
a70b8144 | 2593 | try |
dd61ec5c | 2594 | { |
0000e5cc PA |
2595 | int val; |
2596 | ||
dd61ec5c | 2597 | val = bl->owner->ops->insert_location (bl); |
0000e5cc | 2598 | if (val) |
688fca4f | 2599 | bp_excpt = gdb_exception {RETURN_ERROR, GENERIC_ERROR}; |
dd61ec5c | 2600 | } |
94aeb44b | 2601 | catch (gdb_exception &e) |
dd61ec5c | 2602 | { |
94aeb44b | 2603 | bp_excpt = std::move (e); |
dd61ec5c | 2604 | } |
879bfdc2 DJ |
2605 | } |
2606 | else | |
2607 | { | |
2608 | /* No. This breakpoint will not be inserted. | |
2609 | No error, but do not mark the bp as 'inserted'. */ | |
2610 | return 0; | |
2611 | } | |
2612 | } | |
2613 | ||
688fca4f | 2614 | if (bp_excpt.reason != 0) |
879bfdc2 DJ |
2615 | { |
2616 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2617 | |
2618 | /* In some cases, we might not be able to insert a | |
2619 | breakpoint in a shared library that has already been | |
2620 | removed, but we have not yet processed the shlib unload | |
2621 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2622 | breakpoint insertion themselves can't tell why the |
2623 | breakpoint insertion failed (e.g., the remote target | |
2624 | doesn't define error codes), so we must treat generic | |
2625 | errors as memory errors. */ | |
688fca4f PA |
2626 | if (bp_excpt.reason == RETURN_ERROR |
2627 | && (bp_excpt.error == GENERIC_ERROR | |
2628 | || bp_excpt.error == MEMORY_ERROR) | |
076855f9 | 2629 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2630 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2631 | || shared_objfile_contains_address_p (bl->pspace, |
2632 | bl->address))) | |
879bfdc2 | 2633 | { |
4a64f543 | 2634 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2635 | bl->shlib_disabled = 1; |
76727919 | 2636 | gdb::observers::breakpoint_modified.notify (bl->owner); |
3fbb6ffa TJB |
2637 | if (!*disabled_breaks) |
2638 | { | |
2639 | fprintf_unfiltered (tmp_error_stream, | |
2640 | "Cannot insert breakpoint %d.\n", | |
2641 | bl->owner->number); | |
2642 | fprintf_unfiltered (tmp_error_stream, | |
2643 | "Temporarily disabling shared " | |
2644 | "library breakpoints:\n"); | |
2645 | } | |
2646 | *disabled_breaks = 1; | |
879bfdc2 | 2647 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2648 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2649 | return 0; |
879bfdc2 DJ |
2650 | } |
2651 | else | |
879bfdc2 | 2652 | { |
35df4500 | 2653 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2654 | { |
0000e5cc | 2655 | *hw_breakpoint_error = 1; |
688fca4f | 2656 | *hw_bp_error_explained_already = bp_excpt.message != NULL; |
dd61ec5c MW |
2657 | fprintf_unfiltered (tmp_error_stream, |
2658 | "Cannot insert hardware breakpoint %d%s", | |
688fca4f PA |
2659 | bl->owner->number, |
2660 | bp_excpt.message ? ":" : ".\n"); | |
2661 | if (bp_excpt.message != NULL) | |
2662 | fprintf_unfiltered (tmp_error_stream, "%s.\n", | |
3d6e9d23 | 2663 | bp_excpt.what ()); |
879bfdc2 DJ |
2664 | } |
2665 | else | |
2666 | { | |
688fca4f | 2667 | if (bp_excpt.message == NULL) |
0000e5cc | 2668 | { |
1ccbe998 | 2669 | std::string message |
0000e5cc PA |
2670 | = memory_error_message (TARGET_XFER_E_IO, |
2671 | bl->gdbarch, bl->address); | |
0000e5cc PA |
2672 | |
2673 | fprintf_unfiltered (tmp_error_stream, | |
2674 | "Cannot insert breakpoint %d.\n" | |
2675 | "%s\n", | |
1ccbe998 | 2676 | bl->owner->number, message.c_str ()); |
0000e5cc PA |
2677 | } |
2678 | else | |
2679 | { | |
2680 | fprintf_unfiltered (tmp_error_stream, | |
2681 | "Cannot insert breakpoint %d: %s\n", | |
2682 | bl->owner->number, | |
3d6e9d23 | 2683 | bp_excpt.what ()); |
0000e5cc | 2684 | } |
879bfdc2 | 2685 | } |
0000e5cc | 2686 | return 1; |
879bfdc2 DJ |
2687 | |
2688 | } | |
2689 | } | |
2690 | else | |
35df4500 | 2691 | bl->inserted = 1; |
879bfdc2 | 2692 | |
0000e5cc | 2693 | return 0; |
879bfdc2 DJ |
2694 | } |
2695 | ||
35df4500 | 2696 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2697 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2698 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2699 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2700 | { |
0000e5cc PA |
2701 | int val; |
2702 | ||
77b06cd7 TJB |
2703 | gdb_assert (bl->owner->ops != NULL |
2704 | && bl->owner->ops->insert_location != NULL); | |
2705 | ||
2706 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2707 | |
2708 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2709 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2710 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2711 | { |
2712 | struct bp_location *loc, **loc_temp; | |
2713 | ||
2714 | /* But don't try to insert it, if there's already another | |
2715 | hw_access location that would be considered a duplicate | |
2716 | of this one. */ | |
2717 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2718 | if (loc != bl |
85d721b8 | 2719 | && loc->watchpoint_type == hw_access |
35df4500 | 2720 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2721 | { |
35df4500 TJB |
2722 | bl->duplicate = 1; |
2723 | bl->inserted = 1; | |
2724 | bl->target_info = loc->target_info; | |
2725 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2726 | val = 0; |
2727 | break; | |
2728 | } | |
2729 | ||
2730 | if (val == 1) | |
2731 | { | |
77b06cd7 TJB |
2732 | bl->watchpoint_type = hw_access; |
2733 | val = bl->owner->ops->insert_location (bl); | |
2734 | ||
2735 | if (val) | |
2736 | /* Back to the original value. */ | |
2737 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2738 | } |
2739 | } | |
2740 | ||
35df4500 | 2741 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2742 | } |
2743 | ||
35df4500 | 2744 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2745 | { |
0000e5cc PA |
2746 | int val; |
2747 | ||
77b06cd7 TJB |
2748 | gdb_assert (bl->owner->ops != NULL |
2749 | && bl->owner->ops->insert_location != NULL); | |
2750 | ||
2751 | val = bl->owner->ops->insert_location (bl); | |
2752 | if (val) | |
2753 | { | |
2754 | bl->owner->enable_state = bp_disabled; | |
2755 | ||
2756 | if (val == 1) | |
2757 | warning (_("\ | |
2758 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2759 | of catchpoint."), bl->owner->number); | |
2760 | else | |
2761 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2762 | } | |
2763 | ||
2764 | bl->inserted = (val == 0); | |
1640b821 DJ |
2765 | |
2766 | /* We've already printed an error message if there was a problem | |
2767 | inserting this catchpoint, and we've disabled the catchpoint, | |
2768 | so just return success. */ | |
2769 | return 0; | |
879bfdc2 DJ |
2770 | } |
2771 | ||
2772 | return 0; | |
2773 | } | |
2774 | ||
6c95b8df PA |
2775 | /* This function is called when program space PSPACE is about to be |
2776 | deleted. It takes care of updating breakpoints to not reference | |
2777 | PSPACE anymore. */ | |
2778 | ||
2779 | void | |
2780 | breakpoint_program_space_exit (struct program_space *pspace) | |
2781 | { | |
2782 | struct breakpoint *b, *b_temp; | |
876fa593 | 2783 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2784 | |
2785 | /* Remove any breakpoint that was set through this program space. */ | |
2786 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2787 | { | |
2788 | if (b->pspace == pspace) | |
2789 | delete_breakpoint (b); | |
2790 | } | |
2791 | ||
2792 | /* Breakpoints set through other program spaces could have locations | |
2793 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2794 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2795 | { |
2796 | struct bp_location *tmp; | |
2797 | ||
2798 | if (loc->pspace == pspace) | |
2799 | { | |
2bdf28a0 | 2800 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2801 | if (loc->owner->loc == loc) |
2802 | loc->owner->loc = loc->next; | |
2803 | else | |
2804 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2805 | if (tmp->next == loc) | |
2806 | { | |
2807 | tmp->next = loc->next; | |
2808 | break; | |
2809 | } | |
2810 | } | |
2811 | } | |
2812 | ||
2813 | /* Now update the global location list to permanently delete the | |
2814 | removed locations above. */ | |
44702360 | 2815 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2816 | } |
2817 | ||
74960c60 VP |
2818 | /* Make sure all breakpoints are inserted in inferior. |
2819 | Throws exception on any error. | |
2820 | A breakpoint that is already inserted won't be inserted | |
2821 | again, so calling this function twice is safe. */ | |
2822 | void | |
2823 | insert_breakpoints (void) | |
2824 | { | |
2825 | struct breakpoint *bpt; | |
2826 | ||
2827 | ALL_BREAKPOINTS (bpt) | |
2828 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2829 | { |
2830 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2831 | ||
2832 | update_watchpoint (w, 0 /* don't reparse. */); | |
2833 | } | |
74960c60 | 2834 | |
04086b45 PA |
2835 | /* Updating watchpoints creates new locations, so update the global |
2836 | location list. Explicitly tell ugll to insert locations and | |
2837 | ignore breakpoints_always_inserted_mode. */ | |
2838 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2839 | } |
2840 | ||
20388dd6 YQ |
2841 | /* Invoke CALLBACK for each of bp_location. */ |
2842 | ||
2843 | void | |
2844 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2845 | { | |
2846 | struct bp_location *loc, **loc_tmp; | |
2847 | ||
2848 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2849 | { | |
2850 | callback (loc, NULL); | |
2851 | } | |
2852 | } | |
2853 | ||
b775012e LM |
2854 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2855 | target. It is the case with deleting and disabling of breakpoints when using | |
2856 | always-inserted mode. */ | |
2857 | ||
2858 | static void | |
2859 | update_inserted_breakpoint_locations (void) | |
2860 | { | |
2861 | struct bp_location *bl, **blp_tmp; | |
2862 | int error_flag = 0; | |
2863 | int val = 0; | |
2864 | int disabled_breaks = 0; | |
2865 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2866 | int hw_bp_details_reported = 0; |
b775012e | 2867 | |
d7e74731 | 2868 | string_file tmp_error_stream; |
b775012e LM |
2869 | |
2870 | /* Explicitly mark the warning -- this will only be printed if | |
2871 | there was an error. */ | |
d7e74731 | 2872 | tmp_error_stream.puts ("Warning:\n"); |
b775012e | 2873 | |
5ed8105e | 2874 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
b775012e LM |
2875 | |
2876 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2877 | { | |
2878 | /* We only want to update software breakpoints and hardware | |
2879 | breakpoints. */ | |
2880 | if (!is_breakpoint (bl->owner)) | |
2881 | continue; | |
2882 | ||
2883 | /* We only want to update locations that are already inserted | |
2884 | and need updating. This is to avoid unwanted insertion during | |
2885 | deletion of breakpoints. */ | |
4daf1902 | 2886 | if (!bl->inserted || !bl->needs_update) |
b775012e LM |
2887 | continue; |
2888 | ||
2889 | switch_to_program_space_and_thread (bl->pspace); | |
2890 | ||
2891 | /* For targets that support global breakpoints, there's no need | |
2892 | to select an inferior to insert breakpoint to. In fact, even | |
2893 | if we aren't attached to any process yet, we should still | |
2894 | insert breakpoints. */ | |
f5656ead | 2895 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
5b6d1e4f | 2896 | && (inferior_ptid == null_ptid || !target_has_execution)) |
b775012e LM |
2897 | continue; |
2898 | ||
d7e74731 | 2899 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2900 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2901 | if (val) |
2902 | error_flag = val; | |
2903 | } | |
2904 | ||
2905 | if (error_flag) | |
2906 | { | |
223ffa71 | 2907 | target_terminal::ours_for_output (); |
b775012e LM |
2908 | error_stream (tmp_error_stream); |
2909 | } | |
b775012e LM |
2910 | } |
2911 | ||
c30eee59 | 2912 | /* Used when starting or continuing the program. */ |
c906108c | 2913 | |
74960c60 VP |
2914 | static void |
2915 | insert_breakpoint_locations (void) | |
c906108c | 2916 | { |
a5606eee | 2917 | struct breakpoint *bpt; |
35df4500 | 2918 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2919 | int error_flag = 0; |
c906108c | 2920 | int val = 0; |
3fbb6ffa | 2921 | int disabled_breaks = 0; |
81d0cc19 | 2922 | int hw_breakpoint_error = 0; |
dd61ec5c | 2923 | int hw_bp_error_explained_already = 0; |
c906108c | 2924 | |
d7e74731 PA |
2925 | string_file tmp_error_stream; |
2926 | ||
81d0cc19 GS |
2927 | /* Explicitly mark the warning -- this will only be printed if |
2928 | there was an error. */ | |
d7e74731 | 2929 | tmp_error_stream.puts ("Warning:\n"); |
6c95b8df | 2930 | |
5ed8105e | 2931 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 2932 | |
35df4500 | 2933 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2934 | { |
b775012e | 2935 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2936 | continue; |
2937 | ||
4a64f543 MS |
2938 | /* There is no point inserting thread-specific breakpoints if |
2939 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2940 | has BL->OWNER always non-NULL. */ | |
35df4500 | 2941 | if (bl->owner->thread != -1 |
5d5658a1 | 2942 | && !valid_global_thread_id (bl->owner->thread)) |
f365de73 AS |
2943 | continue; |
2944 | ||
35df4500 | 2945 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2946 | |
2947 | /* For targets that support global breakpoints, there's no need | |
2948 | to select an inferior to insert breakpoint to. In fact, even | |
2949 | if we aren't attached to any process yet, we should still | |
2950 | insert breakpoints. */ | |
f5656ead | 2951 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
5b6d1e4f | 2952 | && (inferior_ptid == null_ptid || !target_has_execution)) |
6c95b8df PA |
2953 | continue; |
2954 | ||
d7e74731 | 2955 | val = insert_bp_location (bl, &tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2956 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2957 | if (val) |
eacd795a | 2958 | error_flag = val; |
879bfdc2 | 2959 | } |
c906108c | 2960 | |
4a64f543 MS |
2961 | /* If we failed to insert all locations of a watchpoint, remove |
2962 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2963 | ALL_BREAKPOINTS (bpt) |
2964 | { | |
2965 | int some_failed = 0; | |
2966 | struct bp_location *loc; | |
2967 | ||
2968 | if (!is_hardware_watchpoint (bpt)) | |
2969 | continue; | |
2970 | ||
d6b74ac4 | 2971 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2972 | continue; |
74960c60 VP |
2973 | |
2974 | if (bpt->disposition == disp_del_at_next_stop) | |
2975 | continue; | |
a5606eee VP |
2976 | |
2977 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2978 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2979 | { |
2980 | some_failed = 1; | |
2981 | break; | |
2982 | } | |
2983 | if (some_failed) | |
2984 | { | |
2985 | for (loc = bpt->loc; loc; loc = loc->next) | |
2986 | if (loc->inserted) | |
834c0d03 | 2987 | remove_breakpoint (loc); |
a5606eee VP |
2988 | |
2989 | hw_breakpoint_error = 1; | |
d7e74731 PA |
2990 | tmp_error_stream.printf ("Could not insert " |
2991 | "hardware watchpoint %d.\n", | |
2992 | bpt->number); | |
eacd795a | 2993 | error_flag = -1; |
a5606eee VP |
2994 | } |
2995 | } | |
2996 | ||
eacd795a | 2997 | if (error_flag) |
81d0cc19 GS |
2998 | { |
2999 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3000 | message about possibly exhausted resources. */ | |
dd61ec5c | 3001 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3002 | { |
d7e74731 | 3003 | tmp_error_stream.printf ("Could not insert hardware breakpoints:\n\ |
c6510018 | 3004 | You may have requested too many hardware breakpoints/watchpoints.\n"); |
81d0cc19 | 3005 | } |
223ffa71 | 3006 | target_terminal::ours_for_output (); |
81d0cc19 GS |
3007 | error_stream (tmp_error_stream); |
3008 | } | |
c906108c SS |
3009 | } |
3010 | ||
c30eee59 TJB |
3011 | /* Used when the program stops. |
3012 | Returns zero if successful, or non-zero if there was a problem | |
3013 | removing a breakpoint location. */ | |
3014 | ||
c906108c | 3015 | int |
fba45db2 | 3016 | remove_breakpoints (void) |
c906108c | 3017 | { |
35df4500 | 3018 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3019 | int val = 0; |
c906108c | 3020 | |
35df4500 | 3021 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3022 | { |
1e4d1764 | 3023 | if (bl->inserted && !is_tracepoint (bl->owner)) |
834c0d03 | 3024 | val |= remove_breakpoint (bl); |
c5aa993b | 3025 | } |
3a1bae8e | 3026 | return val; |
c906108c SS |
3027 | } |
3028 | ||
49fa26b0 PA |
3029 | /* When a thread exits, remove breakpoints that are related to |
3030 | that thread. */ | |
3031 | ||
3032 | static void | |
3033 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3034 | { | |
3035 | struct breakpoint *b, *b_tmp; | |
3036 | ||
3037 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3038 | { | |
5d5658a1 | 3039 | if (b->thread == tp->global_num && user_breakpoint_p (b)) |
49fa26b0 PA |
3040 | { |
3041 | b->disposition = disp_del_at_next_stop; | |
3042 | ||
3043 | printf_filtered (_("\ | |
43792cf0 PA |
3044 | Thread-specific breakpoint %d deleted - thread %s no longer in the thread list.\n"), |
3045 | b->number, print_thread_id (tp)); | |
49fa26b0 PA |
3046 | |
3047 | /* Hide it from the user. */ | |
3048 | b->number = 0; | |
3049 | } | |
3050 | } | |
3051 | } | |
3052 | ||
f3869b1a | 3053 | /* See breakpoint.h. */ |
6c95b8df | 3054 | |
f3869b1a | 3055 | void |
00431a78 | 3056 | remove_breakpoints_inf (inferior *inf) |
6c95b8df | 3057 | { |
35df4500 | 3058 | struct bp_location *bl, **blp_tmp; |
6c95b8df | 3059 | int val; |
6c95b8df | 3060 | |
35df4500 | 3061 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3062 | { |
35df4500 | 3063 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3064 | continue; |
3065 | ||
fc126975 | 3066 | if (bl->inserted && !bl->target_info.persist) |
6c95b8df | 3067 | { |
834c0d03 | 3068 | val = remove_breakpoint (bl); |
6c95b8df | 3069 | if (val != 0) |
f3869b1a | 3070 | return; |
6c95b8df PA |
3071 | } |
3072 | } | |
6c95b8df PA |
3073 | } |
3074 | ||
e58b0e63 PA |
3075 | static int internal_breakpoint_number = -1; |
3076 | ||
84f4c1fe PM |
3077 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3078 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3079 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3080 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3081 | breakpoint_count and that value incremented. Internal breakpoints |
3082 | do not set the internal var bpnum. */ | |
3083 | static void | |
3084 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3085 | { | |
3086 | if (internal) | |
3087 | b->number = internal_breakpoint_number--; | |
3088 | else | |
3089 | { | |
3090 | set_breakpoint_count (breakpoint_count + 1); | |
3091 | b->number = breakpoint_count; | |
3092 | } | |
3093 | } | |
3094 | ||
e62c965a | 3095 | static struct breakpoint * |
a6d9a66e | 3096 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3097 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3098 | const struct breakpoint_ops *ops) |
e62c965a | 3099 | { |
51abb421 | 3100 | symtab_and_line sal; |
e62c965a PP |
3101 | sal.pc = address; |
3102 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3103 | sal.pspace = current_program_space; |
e62c965a | 3104 | |
51abb421 | 3105 | breakpoint *b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3106 | b->number = internal_breakpoint_number--; |
3107 | b->disposition = disp_donttouch; | |
3108 | ||
3109 | return b; | |
3110 | } | |
3111 | ||
17450429 PP |
3112 | static const char *const longjmp_names[] = |
3113 | { | |
3114 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3115 | }; | |
3116 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3117 | ||
3118 | /* Per-objfile data private to breakpoint.c. */ | |
3119 | struct breakpoint_objfile_data | |
3120 | { | |
3121 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
43dce439 | 3122 | struct bound_minimal_symbol overlay_msym {}; |
17450429 PP |
3123 | |
3124 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
43dce439 | 3125 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES] {}; |
17450429 | 3126 | |
28106bc2 | 3127 | /* True if we have looked for longjmp probes. */ |
43dce439 | 3128 | int longjmp_searched = 0; |
28106bc2 | 3129 | |
45461e0d SM |
3130 | /* SystemTap probe points for longjmp (if any). These are non-owning |
3131 | references. */ | |
3132 | std::vector<probe *> longjmp_probes; | |
28106bc2 | 3133 | |
17450429 | 3134 | /* Minimal symbol for "std::terminate()" (if any). */ |
43dce439 | 3135 | struct bound_minimal_symbol terminate_msym {}; |
17450429 PP |
3136 | |
3137 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
43dce439 | 3138 | struct bound_minimal_symbol exception_msym {}; |
28106bc2 SDJ |
3139 | |
3140 | /* True if we have looked for exception probes. */ | |
43dce439 | 3141 | int exception_searched = 0; |
28106bc2 | 3142 | |
45461e0d SM |
3143 | /* SystemTap probe points for unwinding (if any). These are non-owning |
3144 | references. */ | |
3145 | std::vector<probe *> exception_probes; | |
17450429 PP |
3146 | }; |
3147 | ||
51d3063a TT |
3148 | static const struct objfile_key<breakpoint_objfile_data> |
3149 | breakpoint_objfile_key; | |
17450429 PP |
3150 | |
3151 | /* Minimal symbol not found sentinel. */ | |
3152 | static struct minimal_symbol msym_not_found; | |
3153 | ||
3154 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3155 | ||
3156 | static int | |
3157 | msym_not_found_p (const struct minimal_symbol *msym) | |
3158 | { | |
3159 | return msym == &msym_not_found; | |
3160 | } | |
3161 | ||
3162 | /* Return per-objfile data needed by breakpoint.c. | |
3163 | Allocate the data if necessary. */ | |
3164 | ||
3165 | static struct breakpoint_objfile_data * | |
3166 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3167 | { | |
3168 | struct breakpoint_objfile_data *bp_objfile_data; | |
3169 | ||
51d3063a | 3170 | bp_objfile_data = breakpoint_objfile_key.get (objfile); |
17450429 | 3171 | if (bp_objfile_data == NULL) |
51d3063a | 3172 | bp_objfile_data = breakpoint_objfile_key.emplace (objfile); |
17450429 PP |
3173 | return bp_objfile_data; |
3174 | } | |
3175 | ||
e62c965a | 3176 | static void |
af02033e | 3177 | create_overlay_event_breakpoint (void) |
e62c965a | 3178 | { |
af02033e | 3179 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3180 | |
2030c079 | 3181 | for (objfile *objfile : current_program_space->objfiles ()) |
69de3c6a PP |
3182 | { |
3183 | struct breakpoint *b; | |
17450429 PP |
3184 | struct breakpoint_objfile_data *bp_objfile_data; |
3185 | CORE_ADDR addr; | |
67994074 | 3186 | struct explicit_location explicit_loc; |
69de3c6a | 3187 | |
17450429 PP |
3188 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3189 | ||
3b7344d5 | 3190 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3191 | continue; |
3192 | ||
3b7344d5 | 3193 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3194 | { |
3b7344d5 | 3195 | struct bound_minimal_symbol m; |
17450429 PP |
3196 | |
3197 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3198 | if (m.minsym == NULL) |
17450429 PP |
3199 | { |
3200 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3201 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3202 | continue; |
3203 | } | |
3204 | bp_objfile_data->overlay_msym = m; | |
3205 | } | |
e62c965a | 3206 | |
77e371c0 | 3207 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3208 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3209 | bp_overlay_event, |
3210 | &internal_breakpoint_ops); | |
67994074 KS |
3211 | initialize_explicit_location (&explicit_loc); |
3212 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3213 | b->location = new_explicit_location (&explicit_loc); |
e62c965a | 3214 | |
69de3c6a PP |
3215 | if (overlay_debugging == ovly_auto) |
3216 | { | |
3217 | b->enable_state = bp_enabled; | |
3218 | overlay_events_enabled = 1; | |
3219 | } | |
3220 | else | |
3221 | { | |
3222 | b->enable_state = bp_disabled; | |
3223 | overlay_events_enabled = 0; | |
3224 | } | |
e62c965a | 3225 | } |
e62c965a PP |
3226 | } |
3227 | ||
0fd8e87f | 3228 | static void |
af02033e | 3229 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3230 | { |
6c95b8df | 3231 | struct program_space *pspace; |
6c95b8df | 3232 | |
5ed8105e | 3233 | scoped_restore_current_program_space restore_pspace; |
0fd8e87f | 3234 | |
6c95b8df | 3235 | ALL_PSPACES (pspace) |
af02033e | 3236 | { |
af02033e PP |
3237 | set_current_program_space (pspace); |
3238 | ||
2030c079 | 3239 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3240 | { |
3241 | int i; | |
3242 | struct gdbarch *gdbarch; | |
3243 | struct breakpoint_objfile_data *bp_objfile_data; | |
0fd8e87f | 3244 | |
aed57c53 | 3245 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3246 | |
aed57c53 | 3247 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
17450429 | 3248 | |
aed57c53 TT |
3249 | if (!bp_objfile_data->longjmp_searched) |
3250 | { | |
3251 | std::vector<probe *> ret | |
3252 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
25f9533e | 3253 | |
aed57c53 TT |
3254 | if (!ret.empty ()) |
3255 | { | |
3256 | /* We are only interested in checking one element. */ | |
3257 | probe *p = ret[0]; | |
3258 | ||
3259 | if (!p->can_evaluate_arguments ()) | |
3260 | { | |
3261 | /* We cannot use the probe interface here, because it does | |
3262 | not know how to evaluate arguments. */ | |
3263 | ret.clear (); | |
3264 | } | |
3265 | } | |
3266 | bp_objfile_data->longjmp_probes = ret; | |
3267 | bp_objfile_data->longjmp_searched = 1; | |
3268 | } | |
25f9533e | 3269 | |
aed57c53 TT |
3270 | if (!bp_objfile_data->longjmp_probes.empty ()) |
3271 | { | |
3272 | for (probe *p : bp_objfile_data->longjmp_probes) | |
3273 | { | |
3274 | struct breakpoint *b; | |
3275 | ||
3276 | b = create_internal_breakpoint (gdbarch, | |
3277 | p->get_relocated_address (objfile), | |
3278 | bp_longjmp_master, | |
3279 | &internal_breakpoint_ops); | |
3280 | b->location = new_probe_location ("-probe-stap libc:longjmp"); | |
3281 | b->enable_state = bp_disabled; | |
3282 | } | |
28106bc2 | 3283 | |
aed57c53 TT |
3284 | continue; |
3285 | } | |
28106bc2 | 3286 | |
aed57c53 | 3287 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
28106bc2 | 3288 | continue; |
28106bc2 | 3289 | |
aed57c53 TT |
3290 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
3291 | { | |
3292 | struct breakpoint *b; | |
3293 | const char *func_name; | |
3294 | CORE_ADDR addr; | |
3295 | struct explicit_location explicit_loc; | |
0fd8e87f | 3296 | |
aed57c53 TT |
3297 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
3298 | continue; | |
17450429 | 3299 | |
aed57c53 TT |
3300 | func_name = longjmp_names[i]; |
3301 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) | |
3302 | { | |
3303 | struct bound_minimal_symbol m; | |
3304 | ||
3305 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3306 | if (m.minsym == NULL) | |
3307 | { | |
3308 | /* Prevent future lookups in this objfile. */ | |
3309 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; | |
3310 | continue; | |
3311 | } | |
3312 | bp_objfile_data->longjmp_msym[i] = m; | |
3313 | } | |
17450429 | 3314 | |
aed57c53 TT |
3315 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
3316 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, | |
3317 | &internal_breakpoint_ops); | |
3318 | initialize_explicit_location (&explicit_loc); | |
3319 | explicit_loc.function_name = ASTRDUP (func_name); | |
3320 | b->location = new_explicit_location (&explicit_loc); | |
3321 | b->enable_state = bp_disabled; | |
3322 | } | |
3323 | } | |
af02033e | 3324 | } |
0fd8e87f UW |
3325 | } |
3326 | ||
af02033e | 3327 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3328 | static void |
af02033e | 3329 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3330 | { |
3331 | struct program_space *pspace; | |
af02033e | 3332 | const char *const func_name = "std::terminate()"; |
aa7d318d | 3333 | |
5ed8105e | 3334 | scoped_restore_current_program_space restore_pspace; |
aa7d318d TT |
3335 | |
3336 | ALL_PSPACES (pspace) | |
17450429 | 3337 | { |
17450429 PP |
3338 | CORE_ADDR addr; |
3339 | ||
3340 | set_current_program_space (pspace); | |
3341 | ||
2030c079 | 3342 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3343 | { |
3344 | struct breakpoint *b; | |
3345 | struct breakpoint_objfile_data *bp_objfile_data; | |
3346 | struct explicit_location explicit_loc; | |
aa7d318d | 3347 | |
aed57c53 | 3348 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3349 | |
aed57c53 TT |
3350 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
3351 | continue; | |
17450429 | 3352 | |
aed57c53 TT |
3353 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
3354 | { | |
3355 | struct bound_minimal_symbol m; | |
17450429 | 3356 | |
aed57c53 TT |
3357 | m = lookup_minimal_symbol (func_name, NULL, objfile); |
3358 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text | |
3359 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
3360 | { | |
3361 | /* Prevent future lookups in this objfile. */ | |
3362 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; | |
3363 | continue; | |
3364 | } | |
3365 | bp_objfile_data->terminate_msym = m; | |
3366 | } | |
aa7d318d | 3367 | |
aed57c53 TT |
3368 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3369 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
3370 | bp_std_terminate_master, | |
3371 | &internal_breakpoint_ops); | |
3372 | initialize_explicit_location (&explicit_loc); | |
3373 | explicit_loc.function_name = ASTRDUP (func_name); | |
3374 | b->location = new_explicit_location (&explicit_loc); | |
3375 | b->enable_state = bp_disabled; | |
3376 | } | |
17450429 | 3377 | } |
aa7d318d TT |
3378 | } |
3379 | ||
186c406b TT |
3380 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3381 | ||
70221824 | 3382 | static void |
186c406b TT |
3383 | create_exception_master_breakpoint (void) |
3384 | { | |
17450429 | 3385 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b | 3386 | |
2030c079 | 3387 | for (objfile *objfile : current_program_space->objfiles ()) |
186c406b | 3388 | { |
17450429 PP |
3389 | struct breakpoint *b; |
3390 | struct gdbarch *gdbarch; | |
3391 | struct breakpoint_objfile_data *bp_objfile_data; | |
3392 | CORE_ADDR addr; | |
67994074 | 3393 | struct explicit_location explicit_loc; |
17450429 PP |
3394 | |
3395 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3396 | ||
28106bc2 SDJ |
3397 | /* We prefer the SystemTap probe point if it exists. */ |
3398 | if (!bp_objfile_data->exception_searched) | |
3399 | { | |
45461e0d SM |
3400 | std::vector<probe *> ret |
3401 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
25f9533e | 3402 | |
45461e0d | 3403 | if (!ret.empty ()) |
25f9533e SDJ |
3404 | { |
3405 | /* We are only interested in checking one element. */ | |
45461e0d | 3406 | probe *p = ret[0]; |
25f9533e | 3407 | |
935676c9 | 3408 | if (!p->can_evaluate_arguments ()) |
25f9533e SDJ |
3409 | { |
3410 | /* We cannot use the probe interface here, because it does | |
3411 | not know how to evaluate arguments. */ | |
45461e0d | 3412 | ret.clear (); |
25f9533e SDJ |
3413 | } |
3414 | } | |
3415 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3416 | bp_objfile_data->exception_searched = 1; |
3417 | } | |
3418 | ||
45461e0d | 3419 | if (!bp_objfile_data->exception_probes.empty ()) |
28106bc2 | 3420 | { |
b926417a | 3421 | gdbarch = get_objfile_arch (objfile); |
45461e0d SM |
3422 | |
3423 | for (probe *p : bp_objfile_data->exception_probes) | |
28106bc2 | 3424 | { |
729662a5 | 3425 | b = create_internal_breakpoint (gdbarch, |
935676c9 | 3426 | p->get_relocated_address (objfile), |
28106bc2 SDJ |
3427 | bp_exception_master, |
3428 | &internal_breakpoint_ops); | |
d28cd78a | 3429 | b->location = new_probe_location ("-probe-stap libgcc:unwind"); |
28106bc2 SDJ |
3430 | b->enable_state = bp_disabled; |
3431 | } | |
3432 | ||
3433 | continue; | |
3434 | } | |
3435 | ||
3436 | /* Otherwise, try the hook function. */ | |
3437 | ||
3b7344d5 | 3438 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3439 | continue; |
3440 | ||
3441 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3442 | |
3b7344d5 | 3443 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3444 | { |
3b7344d5 | 3445 | struct bound_minimal_symbol debug_hook; |
186c406b | 3446 | |
17450429 | 3447 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3448 | if (debug_hook.minsym == NULL) |
17450429 | 3449 | { |
3b7344d5 | 3450 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3451 | continue; |
3452 | } | |
3453 | ||
3454 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3455 | } |
17450429 | 3456 | |
77e371c0 | 3457 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
8b88a78e PA |
3458 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3459 | current_top_target ()); | |
06edf0c0 PA |
3460 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3461 | &internal_breakpoint_ops); | |
67994074 KS |
3462 | initialize_explicit_location (&explicit_loc); |
3463 | explicit_loc.function_name = ASTRDUP (func_name); | |
d28cd78a | 3464 | b->location = new_explicit_location (&explicit_loc); |
17450429 | 3465 | b->enable_state = bp_disabled; |
186c406b | 3466 | } |
186c406b TT |
3467 | } |
3468 | ||
9ef9e6a6 KS |
3469 | /* Does B have a location spec? */ |
3470 | ||
3471 | static int | |
3472 | breakpoint_event_location_empty_p (const struct breakpoint *b) | |
3473 | { | |
d28cd78a | 3474 | return b->location != NULL && event_location_empty_p (b->location.get ()); |
9ef9e6a6 KS |
3475 | } |
3476 | ||
c906108c | 3477 | void |
fba45db2 | 3478 | update_breakpoints_after_exec (void) |
c906108c | 3479 | { |
35df4500 | 3480 | struct breakpoint *b, *b_tmp; |
876fa593 | 3481 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3482 | |
25b22b0a PA |
3483 | /* We're about to delete breakpoints from GDB's lists. If the |
3484 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3485 | writing the breakpoints' "shadow contents" back into memory. The | |
3486 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3487 | do that. Instead, the target is responsible from marking | |
3488 | breakpoints out as soon as it detects an exec. We don't do that | |
3489 | here instead, because there may be other attempts to delete | |
3490 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3491 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3492 | if (bploc->pspace == current_program_space) |
3493 | gdb_assert (!bploc->inserted); | |
c906108c | 3494 | |
35df4500 | 3495 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3496 | { |
6c95b8df PA |
3497 | if (b->pspace != current_program_space) |
3498 | continue; | |
3499 | ||
4a64f543 | 3500 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3501 | if (b->type == bp_shlib_event) |
3502 | { | |
3503 | delete_breakpoint (b); | |
3504 | continue; | |
3505 | } | |
c906108c | 3506 | |
4a64f543 | 3507 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3508 | if (b->type == bp_jit_event) |
3509 | { | |
3510 | delete_breakpoint (b); | |
3511 | continue; | |
3512 | } | |
3513 | ||
1900040c | 3514 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3515 | as must overlay event and longjmp master breakpoints. */ |
3516 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3517 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3518 | || b->type == bp_exception_master) | |
c4093a6a JM |
3519 | { |
3520 | delete_breakpoint (b); | |
3521 | continue; | |
3522 | } | |
3523 | ||
4a64f543 | 3524 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3525 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3526 | { |
3527 | delete_breakpoint (b); | |
3528 | continue; | |
3529 | } | |
3530 | ||
7c16b83e PA |
3531 | /* Just like single-step breakpoints. */ |
3532 | if (b->type == bp_single_step) | |
3533 | { | |
3534 | delete_breakpoint (b); | |
3535 | continue; | |
3536 | } | |
3537 | ||
611c83ae PA |
3538 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3539 | after an exec. */ | |
186c406b | 3540 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3541 | || b->type == bp_longjmp_call_dummy |
186c406b | 3542 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3543 | { |
3544 | delete_breakpoint (b); | |
3545 | continue; | |
3546 | } | |
3547 | ||
ce78b96d JB |
3548 | if (b->type == bp_catchpoint) |
3549 | { | |
3550 | /* For now, none of the bp_catchpoint breakpoints need to | |
3551 | do anything at this point. In the future, if some of | |
3552 | the catchpoints need to something, we will need to add | |
3553 | a new method, and call this method from here. */ | |
3554 | continue; | |
3555 | } | |
3556 | ||
c5aa993b JM |
3557 | /* bp_finish is a special case. The only way we ought to be able |
3558 | to see one of these when an exec() has happened, is if the user | |
3559 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3560 | carries them to the call-site of the current callee, by setting | |
3561 | a temporary bp there and resuming. But in this case, the finish | |
3562 | will carry them entirely through the vfork & exec. | |
3563 | ||
3564 | We don't want to allow a bp_finish to remain inserted now. But | |
3565 | we can't safely delete it, 'cause finish_command has a handle to | |
3566 | the bp on a bpstat, and will later want to delete it. There's a | |
3567 | chance (and I've seen it happen) that if we delete the bp_finish | |
3568 | here, that its storage will get reused by the time finish_command | |
3569 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3570 | We really must allow finish_command to delete a bp_finish. | |
3571 | ||
e5dd4106 | 3572 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3573 | it's safe to delete something others may have handles to?" |
3574 | problem, what we'll do here is just uninsert the bp_finish, and | |
3575 | let finish_command delete it. | |
3576 | ||
3577 | (We know the bp_finish is "doomed" in the sense that it's | |
3578 | momentary, and will be deleted as soon as finish_command sees | |
3579 | the inferior stopped. So it doesn't matter that the bp's | |
3580 | address is probably bogus in the new a.out, unlike e.g., the | |
3581 | solib breakpoints.) */ | |
c5aa993b | 3582 | |
c5aa993b JM |
3583 | if (b->type == bp_finish) |
3584 | { | |
3585 | continue; | |
3586 | } | |
3587 | ||
3588 | /* Without a symbolic address, we have little hope of the | |
3589 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3590 | a.out. */ |
9ef9e6a6 | 3591 | if (breakpoint_event_location_empty_p (b)) |
c5aa993b JM |
3592 | { |
3593 | delete_breakpoint (b); | |
3594 | continue; | |
3595 | } | |
c5aa993b | 3596 | } |
c906108c SS |
3597 | } |
3598 | ||
3599 | int | |
d80ee84f | 3600 | detach_breakpoints (ptid_t ptid) |
c906108c | 3601 | { |
35df4500 | 3602 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3603 | int val = 0; |
2989a365 | 3604 | scoped_restore save_inferior_ptid = make_scoped_restore (&inferior_ptid); |
6c95b8df | 3605 | struct inferior *inf = current_inferior (); |
c5aa993b | 3606 | |
e99b03dc | 3607 | if (ptid.pid () == inferior_ptid.pid ()) |
8a3fe4f8 | 3608 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3609 | |
6c95b8df | 3610 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3611 | inferior_ptid = ptid; |
35df4500 | 3612 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3613 | { |
35df4500 | 3614 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3615 | continue; |
3616 | ||
bd9673a4 PW |
3617 | /* This function must physically remove breakpoints locations |
3618 | from the specified ptid, without modifying the breakpoint | |
3619 | package's state. Locations of type bp_loc_other are only | |
3620 | maintained at GDB side. So, there is no need to remove | |
3621 | these bp_loc_other locations. Moreover, removing these | |
3622 | would modify the breakpoint package's state. */ | |
3623 | if (bl->loc_type == bp_loc_other) | |
3624 | continue; | |
3625 | ||
35df4500 | 3626 | if (bl->inserted) |
b2b6a7da | 3627 | val |= remove_breakpoint_1 (bl, DETACH_BREAKPOINT); |
c5aa993b | 3628 | } |
d03285ec | 3629 | |
3a1bae8e | 3630 | return val; |
c906108c SS |
3631 | } |
3632 | ||
35df4500 | 3633 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3634 | Note that this is used to detach breakpoints from a child fork. |
3635 | When we get here, the child isn't in the inferior list, and neither | |
3636 | do we have objects to represent its address space --- we should | |
35df4500 | 3637 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3638 | |
c906108c | 3639 | static int |
b2b6a7da | 3640 | remove_breakpoint_1 (struct bp_location *bl, enum remove_bp_reason reason) |
c906108c SS |
3641 | { |
3642 | int val; | |
c5aa993b | 3643 | |
35df4500 TJB |
3644 | /* BL is never in moribund_locations by our callers. */ |
3645 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3646 | |
74960c60 VP |
3647 | /* The type of none suggests that owner is actually deleted. |
3648 | This should not ever happen. */ | |
35df4500 | 3649 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3650 | |
35df4500 TJB |
3651 | if (bl->loc_type == bp_loc_software_breakpoint |
3652 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3653 | { |
c02f5703 MS |
3654 | /* "Normal" instruction breakpoint: either the standard |
3655 | trap-instruction bp (bp_breakpoint), or a | |
3656 | bp_hardware_breakpoint. */ | |
3657 | ||
3658 | /* First check to see if we have to handle an overlay. */ | |
3659 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3660 | || bl->section == NULL |
3661 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3662 | { |
3663 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3664 | |
3665 | /* If we're trying to uninsert a memory breakpoint that we | |
3666 | know is set in a dynamic object that is marked | |
3667 | shlib_disabled, then either the dynamic object was | |
3668 | removed with "remove-symbol-file" or with | |
3669 | "nosharedlibrary". In the former case, we don't know | |
3670 | whether another dynamic object might have loaded over the | |
3671 | breakpoint's address -- the user might well let us know | |
3672 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3673 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3674 | list of dynamically loaded objects). If we have the |
3675 | breakpoint's shadow memory, that is, this is a software | |
3676 | breakpoint managed by GDB, check whether the breakpoint | |
3677 | is still inserted in memory, to avoid overwriting wrong | |
3678 | code with stale saved shadow contents. Note that HW | |
3679 | breakpoints don't have shadow memory, as they're | |
3680 | implemented using a mechanism that is not dependent on | |
3681 | being able to modify the target's memory, and as such | |
3682 | they should always be removed. */ | |
3683 | if (bl->shlib_disabled | |
3684 | && bl->target_info.shadow_len != 0 | |
3685 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3686 | val = 0; | |
3687 | else | |
73971819 | 3688 | val = bl->owner->ops->remove_location (bl, reason); |
c02f5703 | 3689 | } |
c906108c SS |
3690 | else |
3691 | { | |
4a64f543 | 3692 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3693 | Did we set a breakpoint at the LMA? */ |
3694 | if (!overlay_events_enabled) | |
3695 | { | |
3696 | /* Yes -- overlay event support is not active, so we | |
3697 | should have set a breakpoint at the LMA. Remove it. | |
3698 | */ | |
c02f5703 MS |
3699 | /* Ignore any failures: if the LMA is in ROM, we will |
3700 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3701 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3702 | target_remove_hw_breakpoint (bl->gdbarch, | |
3703 | &bl->overlay_target_info); | |
c02f5703 | 3704 | else |
35df4500 | 3705 | target_remove_breakpoint (bl->gdbarch, |
73971819 PA |
3706 | &bl->overlay_target_info, |
3707 | reason); | |
c02f5703 MS |
3708 | } |
3709 | /* Did we set a breakpoint at the VMA? | |
3710 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3711 | if (bl->inserted) |
c906108c | 3712 | { |
c02f5703 MS |
3713 | /* Yes -- remove it. Previously we did not bother to |
3714 | remove the breakpoint if the section had been | |
3715 | unmapped, but let's not rely on that being safe. We | |
3716 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3717 | |
3718 | /* However, we should remove *software* breakpoints only | |
3719 | if the section is still mapped, or else we overwrite | |
3720 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3721 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3722 | || section_is_mapped (bl->section)) | |
73971819 | 3723 | val = bl->owner->ops->remove_location (bl, reason); |
aa67235e UW |
3724 | else |
3725 | val = 0; | |
c906108c | 3726 | } |
c02f5703 MS |
3727 | else |
3728 | { | |
3729 | /* No -- not inserted, so no need to remove. No error. */ | |
3730 | val = 0; | |
3731 | } | |
c906108c | 3732 | } |
879d1e6b | 3733 | |
08351840 PA |
3734 | /* In some cases, we might not be able to remove a breakpoint in |
3735 | a shared library that has already been removed, but we have | |
3736 | not yet processed the shlib unload event. Similarly for an | |
3737 | unloaded add-symbol-file object - the user might not yet have | |
3738 | had the chance to remove-symbol-file it. shlib_disabled will | |
3739 | be set if the library/object has already been removed, but | |
3740 | the breakpoint hasn't been uninserted yet, e.g., after | |
3741 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3742 | always-inserted mode. */ | |
076855f9 | 3743 | if (val |
08351840 PA |
3744 | && (bl->loc_type == bp_loc_software_breakpoint |
3745 | && (bl->shlib_disabled | |
3746 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3747 | || shared_objfile_contains_address_p (bl->pspace, |
3748 | bl->address)))) | |
879d1e6b UW |
3749 | val = 0; |
3750 | ||
c906108c SS |
3751 | if (val) |
3752 | return val; | |
b2b6a7da | 3753 | bl->inserted = (reason == DETACH_BREAKPOINT); |
c906108c | 3754 | } |
35df4500 | 3755 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3756 | { |
77b06cd7 TJB |
3757 | gdb_assert (bl->owner->ops != NULL |
3758 | && bl->owner->ops->remove_location != NULL); | |
3759 | ||
b2b6a7da | 3760 | bl->inserted = (reason == DETACH_BREAKPOINT); |
73971819 | 3761 | bl->owner->ops->remove_location (bl, reason); |
2e70b7b9 | 3762 | |
c906108c | 3763 | /* Failure to remove any of the hardware watchpoints comes here. */ |
b2b6a7da | 3764 | if (reason == REMOVE_BREAKPOINT && bl->inserted) |
8a3fe4f8 | 3765 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3766 | bl->owner->number); |
c906108c | 3767 | } |
35df4500 TJB |
3768 | else if (bl->owner->type == bp_catchpoint |
3769 | && breakpoint_enabled (bl->owner) | |
3770 | && !bl->duplicate) | |
ce78b96d | 3771 | { |
77b06cd7 TJB |
3772 | gdb_assert (bl->owner->ops != NULL |
3773 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3774 | |
73971819 | 3775 | val = bl->owner->ops->remove_location (bl, reason); |
ce78b96d JB |
3776 | if (val) |
3777 | return val; | |
77b06cd7 | 3778 | |
b2b6a7da | 3779 | bl->inserted = (reason == DETACH_BREAKPOINT); |
ce78b96d | 3780 | } |
c906108c SS |
3781 | |
3782 | return 0; | |
3783 | } | |
3784 | ||
6c95b8df | 3785 | static int |
834c0d03 | 3786 | remove_breakpoint (struct bp_location *bl) |
6c95b8df | 3787 | { |
35df4500 TJB |
3788 | /* BL is never in moribund_locations by our callers. */ |
3789 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3790 | |
6c95b8df PA |
3791 | /* The type of none suggests that owner is actually deleted. |
3792 | This should not ever happen. */ | |
35df4500 | 3793 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df | 3794 | |
5ed8105e | 3795 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 3796 | |
35df4500 | 3797 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3798 | |
5ed8105e | 3799 | return remove_breakpoint_1 (bl, REMOVE_BREAKPOINT); |
6c95b8df PA |
3800 | } |
3801 | ||
c906108c SS |
3802 | /* Clear the "inserted" flag in all breakpoints. */ |
3803 | ||
25b22b0a | 3804 | void |
fba45db2 | 3805 | mark_breakpoints_out (void) |
c906108c | 3806 | { |
35df4500 | 3807 | struct bp_location *bl, **blp_tmp; |
c906108c | 3808 | |
35df4500 | 3809 | ALL_BP_LOCATIONS (bl, blp_tmp) |
66c4b3e8 | 3810 | if (bl->pspace == current_program_space) |
35df4500 | 3811 | bl->inserted = 0; |
c906108c SS |
3812 | } |
3813 | ||
53a5351d JM |
3814 | /* Clear the "inserted" flag in all breakpoints and delete any |
3815 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3816 | |
3817 | Plus other such housekeeping that has to be done for breakpoints | |
3818 | between runs. | |
3819 | ||
53a5351d JM |
3820 | Note: this function gets called at the end of a run (by |
3821 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3822 | init_wait_for_inferior). */ |
c906108c SS |
3823 | |
3824 | ||
3825 | ||
3826 | void | |
fba45db2 | 3827 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3828 | { |
35df4500 | 3829 | struct breakpoint *b, *b_tmp; |
6c95b8df | 3830 | struct program_space *pspace = current_program_space; |
c906108c | 3831 | |
50c71eaf PA |
3832 | /* If breakpoint locations are shared across processes, then there's |
3833 | nothing to do. */ | |
f5656ead | 3834 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3835 | return; |
3836 | ||
1a853c52 | 3837 | mark_breakpoints_out (); |
075f6582 | 3838 | |
35df4500 | 3839 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3840 | { |
6c95b8df PA |
3841 | if (b->loc && b->loc->pspace != pspace) |
3842 | continue; | |
3843 | ||
c5aa993b JM |
3844 | switch (b->type) |
3845 | { | |
3846 | case bp_call_dummy: | |
e2e4d78b | 3847 | case bp_longjmp_call_dummy: |
c906108c | 3848 | |
c5aa993b | 3849 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3850 | cause problems when the inferior is rerun, so we better get |
3851 | rid of it. */ | |
3852 | ||
3853 | case bp_watchpoint_scope: | |
3854 | ||
3855 | /* Also get rid of scope breakpoints. */ | |
3856 | ||
3857 | case bp_shlib_event: | |
3858 | ||
3859 | /* Also remove solib event breakpoints. Their addresses may | |
3860 | have changed since the last time we ran the program. | |
3861 | Actually we may now be debugging against different target; | |
3862 | and so the solib backend that installed this breakpoint may | |
3863 | not be used in by the target. E.g., | |
3864 | ||
3865 | (gdb) file prog-linux | |
3866 | (gdb) run # native linux target | |
3867 | ... | |
3868 | (gdb) kill | |
3869 | (gdb) file prog-win.exe | |
3870 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3871 | */ | |
c906108c | 3872 | |
f59f708a PA |
3873 | case bp_step_resume: |
3874 | ||
3875 | /* Also remove step-resume breakpoints. */ | |
3876 | ||
7c16b83e PA |
3877 | case bp_single_step: |
3878 | ||
3879 | /* Also remove single-step breakpoints. */ | |
3880 | ||
c5aa993b JM |
3881 | delete_breakpoint (b); |
3882 | break; | |
c906108c | 3883 | |
c5aa993b JM |
3884 | case bp_watchpoint: |
3885 | case bp_hardware_watchpoint: | |
3886 | case bp_read_watchpoint: | |
3887 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3888 | { |
3889 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3890 | |
3a5c3e22 PA |
3891 | /* Likewise for watchpoints on local expressions. */ |
3892 | if (w->exp_valid_block != NULL) | |
3893 | delete_breakpoint (b); | |
63000888 | 3894 | else |
3a5c3e22 | 3895 | { |
63000888 PA |
3896 | /* Get rid of existing locations, which are no longer |
3897 | valid. New ones will be created in | |
3898 | update_watchpoint, when the inferior is restarted. | |
3899 | The next update_global_location_list call will | |
3900 | garbage collect them. */ | |
3901 | b->loc = NULL; | |
3902 | ||
3903 | if (context == inf_starting) | |
3904 | { | |
3905 | /* Reset val field to force reread of starting value in | |
3906 | insert_breakpoints. */ | |
850645cf | 3907 | w->val.reset (nullptr); |
4c1d86d9 | 3908 | w->val_valid = false; |
63000888 PA |
3909 | } |
3910 | } | |
3a5c3e22 | 3911 | } |
c5aa993b JM |
3912 | break; |
3913 | default: | |
c5aa993b JM |
3914 | break; |
3915 | } | |
3916 | } | |
1c5cfe86 PA |
3917 | |
3918 | /* Get rid of the moribund locations. */ | |
1123588c | 3919 | for (bp_location *bl : moribund_locations) |
35df4500 | 3920 | decref_bp_location (&bl); |
1123588c | 3921 | moribund_locations.clear (); |
c906108c SS |
3922 | } |
3923 | ||
6c95b8df PA |
3924 | /* These functions concern about actual breakpoints inserted in the |
3925 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3926 | we need to hop over the bkpt --- so we check for address space | |
3927 | match, not program space. */ | |
3928 | ||
c2c6d25f JM |
3929 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3930 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3931 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3932 | permanent breakpoint. | |
3933 | - When continuing from a location with an ordinary breakpoint, we | |
3934 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3935 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3936 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3937 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3938 | |
c2c6d25f | 3939 | enum breakpoint_here |
accd0bcd | 3940 | breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 3941 | { |
35df4500 | 3942 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3943 | int any_breakpoint_here = 0; |
c906108c | 3944 | |
35df4500 | 3945 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3946 | { |
35df4500 TJB |
3947 | if (bl->loc_type != bp_loc_software_breakpoint |
3948 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3949 | continue; |
3950 | ||
f1310107 | 3951 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 | 3952 | if ((breakpoint_enabled (bl->owner) |
1a853c52 | 3953 | || bl->permanent) |
f1310107 | 3954 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3955 | { |
3956 | if (overlay_debugging | |
35df4500 TJB |
3957 | && section_is_overlay (bl->section) |
3958 | && !section_is_mapped (bl->section)) | |
075f6582 | 3959 | continue; /* unmapped overlay -- can't be a match */ |
1a853c52 | 3960 | else if (bl->permanent) |
075f6582 DJ |
3961 | return permanent_breakpoint_here; |
3962 | else | |
3963 | any_breakpoint_here = 1; | |
3964 | } | |
3965 | } | |
c906108c | 3966 | |
f486487f | 3967 | return any_breakpoint_here ? ordinary_breakpoint_here : no_breakpoint_here; |
c906108c SS |
3968 | } |
3969 | ||
d35ae833 PA |
3970 | /* See breakpoint.h. */ |
3971 | ||
3972 | int | |
accd0bcd | 3973 | breakpoint_in_range_p (const address_space *aspace, |
d35ae833 PA |
3974 | CORE_ADDR addr, ULONGEST len) |
3975 | { | |
3976 | struct bp_location *bl, **blp_tmp; | |
3977 | ||
3978 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3979 | { | |
3980 | if (bl->loc_type != bp_loc_software_breakpoint | |
3981 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
3982 | continue; | |
3983 | ||
3984 | if ((breakpoint_enabled (bl->owner) | |
3985 | || bl->permanent) | |
3986 | && breakpoint_location_address_range_overlap (bl, aspace, | |
3987 | addr, len)) | |
3988 | { | |
3989 | if (overlay_debugging | |
3990 | && section_is_overlay (bl->section) | |
3991 | && !section_is_mapped (bl->section)) | |
3992 | { | |
3993 | /* Unmapped overlay -- can't be a match. */ | |
3994 | continue; | |
3995 | } | |
3996 | ||
3997 | return 1; | |
3998 | } | |
3999 | } | |
4000 | ||
4001 | return 0; | |
4002 | } | |
4003 | ||
1c5cfe86 PA |
4004 | /* Return true if there's a moribund breakpoint at PC. */ |
4005 | ||
4006 | int | |
accd0bcd | 4007 | moribund_breakpoint_here_p (const address_space *aspace, CORE_ADDR pc) |
1c5cfe86 | 4008 | { |
1123588c | 4009 | for (bp_location *loc : moribund_locations) |
f1310107 | 4010 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4011 | return 1; |
4012 | ||
4013 | return 0; | |
4014 | } | |
c2c6d25f | 4015 | |
f7ce857f PA |
4016 | /* Returns non-zero iff BL is inserted at PC, in address space |
4017 | ASPACE. */ | |
4018 | ||
4019 | static int | |
4020 | bp_location_inserted_here_p (struct bp_location *bl, | |
accd0bcd | 4021 | const address_space *aspace, CORE_ADDR pc) |
f7ce857f PA |
4022 | { |
4023 | if (bl->inserted | |
4024 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
4025 | aspace, pc)) | |
4026 | { | |
4027 | if (overlay_debugging | |
4028 | && section_is_overlay (bl->section) | |
4029 | && !section_is_mapped (bl->section)) | |
4030 | return 0; /* unmapped overlay -- can't be a match */ | |
4031 | else | |
4032 | return 1; | |
4033 | } | |
4034 | return 0; | |
4035 | } | |
4036 | ||
a1fd2fa5 | 4037 | /* Returns non-zero iff there's a breakpoint inserted at PC. */ |
c906108c SS |
4038 | |
4039 | int | |
accd0bcd | 4040 | breakpoint_inserted_here_p (const address_space *aspace, CORE_ADDR pc) |
c906108c | 4041 | { |
f7ce857f | 4042 | struct bp_location **blp, **blp_tmp = NULL; |
c906108c | 4043 | |
f7ce857f | 4044 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
c5aa993b | 4045 | { |
f7ce857f PA |
4046 | struct bp_location *bl = *blp; |
4047 | ||
35df4500 TJB |
4048 | if (bl->loc_type != bp_loc_software_breakpoint |
4049 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4050 | continue; |
4051 | ||
f7ce857f PA |
4052 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4053 | return 1; | |
c5aa993b | 4054 | } |
c36b740a VP |
4055 | return 0; |
4056 | } | |
4057 | ||
a1fd2fa5 PA |
4058 | /* This function returns non-zero iff there is a software breakpoint |
4059 | inserted at PC. */ | |
c36b740a VP |
4060 | |
4061 | int | |
accd0bcd | 4062 | software_breakpoint_inserted_here_p (const address_space *aspace, |
a1fd2fa5 | 4063 | CORE_ADDR pc) |
4fa8626c | 4064 | { |
f7ce857f | 4065 | struct bp_location **blp, **blp_tmp = NULL; |
4fa8626c | 4066 | |
f7ce857f | 4067 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) |
4fa8626c | 4068 | { |
f7ce857f PA |
4069 | struct bp_location *bl = *blp; |
4070 | ||
35df4500 | 4071 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4072 | continue; |
4073 | ||
f7ce857f PA |
4074 | if (bp_location_inserted_here_p (bl, aspace, pc)) |
4075 | return 1; | |
4fa8626c DJ |
4076 | } |
4077 | ||
4078 | return 0; | |
9c02b525 PA |
4079 | } |
4080 | ||
4081 | /* See breakpoint.h. */ | |
4082 | ||
4083 | int | |
accd0bcd | 4084 | hardware_breakpoint_inserted_here_p (const address_space *aspace, |
9c02b525 PA |
4085 | CORE_ADDR pc) |
4086 | { | |
4087 | struct bp_location **blp, **blp_tmp = NULL; | |
9c02b525 PA |
4088 | |
4089 | ALL_BP_LOCATIONS_AT_ADDR (blp, blp_tmp, pc) | |
4090 | { | |
4091 | struct bp_location *bl = *blp; | |
4092 | ||
4093 | if (bl->loc_type != bp_loc_hardware_breakpoint) | |
4094 | continue; | |
4095 | ||
4096 | if (bp_location_inserted_here_p (bl, aspace, pc)) | |
4097 | return 1; | |
4098 | } | |
4099 | ||
4100 | return 0; | |
4fa8626c DJ |
4101 | } |
4102 | ||
9093389c | 4103 | int |
accd0bcd | 4104 | hardware_watchpoint_inserted_in_range (const address_space *aspace, |
9093389c PA |
4105 | CORE_ADDR addr, ULONGEST len) |
4106 | { | |
4107 | struct breakpoint *bpt; | |
4108 | ||
4109 | ALL_BREAKPOINTS (bpt) | |
4110 | { | |
4111 | struct bp_location *loc; | |
4112 | ||
4113 | if (bpt->type != bp_hardware_watchpoint | |
4114 | && bpt->type != bp_access_watchpoint) | |
4115 | continue; | |
4116 | ||
4117 | if (!breakpoint_enabled (bpt)) | |
4118 | continue; | |
4119 | ||
4120 | for (loc = bpt->loc; loc; loc = loc->next) | |
4121 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4122 | { | |
4123 | CORE_ADDR l, h; | |
4124 | ||
4125 | /* Check for intersection. */ | |
768adc05 PA |
4126 | l = std::max<CORE_ADDR> (loc->address, addr); |
4127 | h = std::min<CORE_ADDR> (loc->address + loc->length, addr + len); | |
9093389c PA |
4128 | if (l < h) |
4129 | return 1; | |
4130 | } | |
4131 | } | |
4132 | return 0; | |
4133 | } | |
c5aa993b | 4134 | |
f2478a7e | 4135 | /* See breakpoint.h. */ |
c906108c | 4136 | |
f2478a7e SM |
4137 | bool |
4138 | is_catchpoint (struct breakpoint *b) | |
c906108c | 4139 | { |
f2478a7e | 4140 | return (b->type == bp_catchpoint); |
c906108c SS |
4141 | } |
4142 | ||
f431efe5 PA |
4143 | /* Frees any storage that is part of a bpstat. Does not walk the |
4144 | 'next' chain. */ | |
4145 | ||
04afa70c | 4146 | bpstats::~bpstats () |
198757a8 | 4147 | { |
04afa70c TT |
4148 | if (bp_location_at != NULL) |
4149 | decref_bp_location (&bp_location_at); | |
198757a8 VP |
4150 | } |
4151 | ||
c906108c SS |
4152 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4153 | Also free any storage that is part of a bpstat. */ | |
4154 | ||
4155 | void | |
fba45db2 | 4156 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4157 | { |
4158 | bpstat p; | |
4159 | bpstat q; | |
4160 | ||
4161 | if (bsp == 0) | |
4162 | return; | |
4163 | p = *bsp; | |
4164 | while (p != NULL) | |
4165 | { | |
4166 | q = p->next; | |
04afa70c | 4167 | delete p; |
c906108c SS |
4168 | p = q; |
4169 | } | |
4170 | *bsp = NULL; | |
4171 | } | |
4172 | ||
04afa70c TT |
4173 | bpstats::bpstats (const bpstats &other) |
4174 | : next (NULL), | |
4175 | bp_location_at (other.bp_location_at), | |
4176 | breakpoint_at (other.breakpoint_at), | |
4177 | commands (other.commands), | |
04afa70c TT |
4178 | print (other.print), |
4179 | stop (other.stop), | |
4180 | print_it (other.print_it) | |
4181 | { | |
850645cf TT |
4182 | if (other.old_val != NULL) |
4183 | old_val = release_value (value_copy (other.old_val.get ())); | |
04afa70c | 4184 | incref_bp_location (bp_location_at); |
04afa70c TT |
4185 | } |
4186 | ||
c906108c SS |
4187 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that |
4188 | is part of the bpstat is copied as well. */ | |
4189 | ||
4190 | bpstat | |
fba45db2 | 4191 | bpstat_copy (bpstat bs) |
c906108c SS |
4192 | { |
4193 | bpstat p = NULL; | |
4194 | bpstat tmp; | |
4195 | bpstat retval = NULL; | |
4196 | ||
4197 | if (bs == NULL) | |
4198 | return bs; | |
4199 | ||
4200 | for (; bs != NULL; bs = bs->next) | |
4201 | { | |
04afa70c | 4202 | tmp = new bpstats (*bs); |
31cc81e9 | 4203 | |
c906108c SS |
4204 | if (p == NULL) |
4205 | /* This is the first thing in the chain. */ | |
4206 | retval = tmp; | |
4207 | else | |
4208 | p->next = tmp; | |
4209 | p = tmp; | |
4210 | } | |
4211 | p->next = NULL; | |
4212 | return retval; | |
4213 | } | |
4214 | ||
4a64f543 | 4215 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4216 | |
4217 | bpstat | |
fba45db2 | 4218 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4219 | { |
c5aa993b JM |
4220 | if (bsp == NULL) |
4221 | return NULL; | |
c906108c | 4222 | |
c5aa993b JM |
4223 | for (; bsp != NULL; bsp = bsp->next) |
4224 | { | |
f431efe5 | 4225 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4226 | return bsp; |
4227 | } | |
c906108c SS |
4228 | return NULL; |
4229 | } | |
4230 | ||
ab04a2af TT |
4231 | /* See breakpoint.h. */ |
4232 | ||
4c462cb0 | 4233 | bool |
427cd150 | 4234 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4235 | { |
ab04a2af TT |
4236 | for (; bsp != NULL; bsp = bsp->next) |
4237 | { | |
427cd150 TT |
4238 | if (bsp->breakpoint_at == NULL) |
4239 | { | |
4240 | /* A moribund location can never explain a signal other than | |
4241 | GDB_SIGNAL_TRAP. */ | |
4242 | if (sig == GDB_SIGNAL_TRAP) | |
4c462cb0 | 4243 | return true; |
427cd150 TT |
4244 | } |
4245 | else | |
47591c29 PA |
4246 | { |
4247 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4248 | sig)) | |
4c462cb0 | 4249 | return true; |
47591c29 | 4250 | } |
ab04a2af TT |
4251 | } |
4252 | ||
4c462cb0 | 4253 | return false; |
ab04a2af TT |
4254 | } |
4255 | ||
4a64f543 MS |
4256 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4257 | stopped at. *BSP upon return is a bpstat which points to the | |
4258 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4259 | good for anything but further calls to bpstat_num). | |
4260 | ||
8671a17b PA |
4261 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4262 | Return -1 if stopped at a breakpoint that has been deleted since | |
4263 | we set it. | |
4264 | Return 1 otherwise. */ | |
c906108c SS |
4265 | |
4266 | int | |
8671a17b | 4267 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4268 | { |
4269 | struct breakpoint *b; | |
4270 | ||
4271 | if ((*bsp) == NULL) | |
4272 | return 0; /* No more breakpoint values */ | |
8671a17b | 4273 | |
4a64f543 MS |
4274 | /* We assume we'll never have several bpstats that correspond to a |
4275 | single breakpoint -- otherwise, this function might return the | |
4276 | same number more than once and this will look ugly. */ | |
f431efe5 | 4277 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4278 | *bsp = (*bsp)->next; |
4279 | if (b == NULL) | |
4280 | return -1; /* breakpoint that's been deleted since */ | |
4281 | ||
4282 | *num = b->number; /* We have its number */ | |
4283 | return 1; | |
c906108c SS |
4284 | } |
4285 | ||
e93ca019 | 4286 | /* See breakpoint.h. */ |
c906108c SS |
4287 | |
4288 | void | |
e93ca019 | 4289 | bpstat_clear_actions (void) |
c906108c | 4290 | { |
e93ca019 JK |
4291 | bpstat bs; |
4292 | ||
00431a78 | 4293 | if (inferior_ptid == null_ptid) |
e93ca019 JK |
4294 | return; |
4295 | ||
00431a78 | 4296 | thread_info *tp = inferior_thread (); |
e93ca019 | 4297 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) |
c906108c | 4298 | { |
d1b0a7bf | 4299 | bs->commands = NULL; |
850645cf | 4300 | bs->old_val.reset (nullptr); |
c906108c SS |
4301 | } |
4302 | } | |
4303 | ||
f3b1572e PA |
4304 | /* Called when a command is about to proceed the inferior. */ |
4305 | ||
4306 | static void | |
4307 | breakpoint_about_to_proceed (void) | |
4308 | { | |
d7e15655 | 4309 | if (inferior_ptid != null_ptid) |
f3b1572e PA |
4310 | { |
4311 | struct thread_info *tp = inferior_thread (); | |
4312 | ||
4313 | /* Allow inferior function calls in breakpoint commands to not | |
4314 | interrupt the command list. When the call finishes | |
4315 | successfully, the inferior will be standing at the same | |
4316 | breakpoint as if nothing happened. */ | |
16c381f0 | 4317 | if (tp->control.in_infcall) |
f3b1572e PA |
4318 | return; |
4319 | } | |
4320 | ||
4321 | breakpoint_proceeded = 1; | |
4322 | } | |
4323 | ||
abf85f46 JK |
4324 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4325 | or its equivalent. */ | |
4326 | ||
4327 | static int | |
4328 | command_line_is_silent (struct command_line *cmd) | |
4329 | { | |
4f45d445 | 4330 | return cmd && (strcmp ("silent", cmd->line) == 0); |
abf85f46 JK |
4331 | } |
4332 | ||
4a64f543 MS |
4333 | /* Execute all the commands associated with all the breakpoints at |
4334 | this location. Any of these commands could cause the process to | |
4335 | proceed beyond this point, etc. We look out for such changes by | |
4336 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4337 | |
347bddb7 PA |
4338 | Returns true if a breakpoint command resumed the inferior. In that |
4339 | case, it is the caller's responsibility to recall it again with the | |
4340 | bpstat of the current thread. */ | |
4341 | ||
4342 | static int | |
4343 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4344 | { |
4345 | bpstat bs; | |
347bddb7 | 4346 | int again = 0; |
c906108c SS |
4347 | |
4348 | /* Avoid endless recursion if a `source' command is contained | |
4349 | in bs->commands. */ | |
4350 | if (executing_breakpoint_commands) | |
347bddb7 | 4351 | return 0; |
c906108c | 4352 | |
81b1e71c TT |
4353 | scoped_restore save_executing |
4354 | = make_scoped_restore (&executing_breakpoint_commands, 1); | |
c906108c | 4355 | |
1ac32117 | 4356 | scoped_restore preventer = prevent_dont_repeat (); |
cf6c5ffb | 4357 | |
4a64f543 | 4358 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4359 | bs = *bsp; |
4360 | ||
4361 | breakpoint_proceeded = 0; | |
4362 | for (; bs != NULL; bs = bs->next) | |
4363 | { | |
d1b0a7bf | 4364 | struct command_line *cmd = NULL; |
6c50ab1c JB |
4365 | |
4366 | /* Take ownership of the BSP's command tree, if it has one. | |
4367 | ||
4368 | The command tree could legitimately contain commands like | |
4369 | 'step' and 'next', which call clear_proceed_status, which | |
4370 | frees stop_bpstat's command tree. To make sure this doesn't | |
4371 | free the tree we're executing out from under us, we need to | |
4372 | take ownership of the tree ourselves. Since a given bpstat's | |
4373 | commands are only executed once, we don't need to copy it; we | |
4374 | can clear the pointer in the bpstat, and make sure we free | |
4375 | the tree when we're done. */ | |
d1b0a7bf | 4376 | counted_command_line ccmd = bs->commands; |
9add0f1b | 4377 | bs->commands = NULL; |
d1b0a7bf TT |
4378 | if (ccmd != NULL) |
4379 | cmd = ccmd.get (); | |
abf85f46 JK |
4380 | if (command_line_is_silent (cmd)) |
4381 | { | |
4382 | /* The action has been already done by bpstat_stop_status. */ | |
4383 | cmd = cmd->next; | |
4384 | } | |
6c50ab1c | 4385 | |
c906108c SS |
4386 | while (cmd != NULL) |
4387 | { | |
4388 | execute_control_command (cmd); | |
4389 | ||
4390 | if (breakpoint_proceeded) | |
4391 | break; | |
4392 | else | |
4393 | cmd = cmd->next; | |
4394 | } | |
6c50ab1c | 4395 | |
c906108c | 4396 | if (breakpoint_proceeded) |
32c1e744 | 4397 | { |
cb814510 | 4398 | if (current_ui->async) |
347bddb7 PA |
4399 | /* If we are in async mode, then the target might be still |
4400 | running, not stopped at any breakpoint, so nothing for | |
4401 | us to do here -- just return to the event loop. */ | |
4402 | ; | |
32c1e744 VP |
4403 | else |
4404 | /* In sync mode, when execute_control_command returns | |
4405 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4406 | Breakpoint commands for that stop were not run, since |
4407 | execute_command does not run breakpoint commands -- | |
4408 | only command_line_handler does, but that one is not | |
4409 | involved in execution of breakpoint commands. So, we | |
4410 | can now execute breakpoint commands. It should be | |
4411 | noted that making execute_command do bpstat actions is | |
4412 | not an option -- in this case we'll have recursive | |
4413 | invocation of bpstat for each breakpoint with a | |
4414 | command, and can easily blow up GDB stack. Instead, we | |
4415 | return true, which will trigger the caller to recall us | |
4416 | with the new stop_bpstat. */ | |
4417 | again = 1; | |
4418 | break; | |
32c1e744 | 4419 | } |
c906108c | 4420 | } |
347bddb7 PA |
4421 | return again; |
4422 | } | |
4423 | ||
00431a78 PA |
4424 | /* Helper for bpstat_do_actions. Get the current thread, if there's |
4425 | one, is alive and has execution. Return NULL otherwise. */ | |
4426 | ||
4427 | static thread_info * | |
4428 | get_bpstat_thread () | |
4429 | { | |
4430 | if (inferior_ptid == null_ptid || !target_has_execution) | |
4431 | return NULL; | |
4432 | ||
4433 | thread_info *tp = inferior_thread (); | |
4434 | if (tp->state == THREAD_EXITED || tp->executing) | |
4435 | return NULL; | |
4436 | return tp; | |
4437 | } | |
4438 | ||
347bddb7 PA |
4439 | void |
4440 | bpstat_do_actions (void) | |
4441 | { | |
694c6bf5 | 4442 | auto cleanup_if_error = make_scope_exit (bpstat_clear_actions); |
00431a78 | 4443 | thread_info *tp; |
353d1d73 | 4444 | |
347bddb7 | 4445 | /* Do any commands attached to breakpoint we are stopped at. */ |
00431a78 PA |
4446 | while ((tp = get_bpstat_thread ()) != NULL) |
4447 | { | |
4448 | /* Since in sync mode, bpstat_do_actions may resume the | |
4449 | inferior, and only return when it is stopped at the next | |
4450 | breakpoint, we keep doing breakpoint actions until it returns | |
4451 | false to indicate the inferior was not resumed. */ | |
4452 | if (!bpstat_do_actions_1 (&tp->control.stop_bpstat)) | |
4453 | break; | |
4454 | } | |
353d1d73 | 4455 | |
694c6bf5 | 4456 | cleanup_if_error.release (); |
c906108c SS |
4457 | } |
4458 | ||
fa4727a6 DJ |
4459 | /* Print out the (old or new) value associated with a watchpoint. */ |
4460 | ||
4461 | static void | |
4462 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4463 | { | |
4464 | if (val == NULL) | |
7f6aba03 | 4465 | fprintf_styled (stream, metadata_style.style (), _("<unreadable>")); |
fa4727a6 | 4466 | else |
79a45b7d TT |
4467 | { |
4468 | struct value_print_options opts; | |
4469 | get_user_print_options (&opts); | |
4470 | value_print (val, stream, &opts); | |
4471 | } | |
fa4727a6 DJ |
4472 | } |
4473 | ||
f303dbd6 PA |
4474 | /* Print the "Thread ID hit" part of "Thread ID hit Breakpoint N" if |
4475 | debugging multiple threads. */ | |
4476 | ||
4477 | void | |
4478 | maybe_print_thread_hit_breakpoint (struct ui_out *uiout) | |
4479 | { | |
112e8700 | 4480 | if (uiout->is_mi_like_p ()) |
f303dbd6 PA |
4481 | return; |
4482 | ||
112e8700 | 4483 | uiout->text ("\n"); |
f303dbd6 PA |
4484 | |
4485 | if (show_thread_that_caused_stop ()) | |
4486 | { | |
4487 | const char *name; | |
4488 | struct thread_info *thr = inferior_thread (); | |
4489 | ||
112e8700 | 4490 | uiout->text ("Thread "); |
33eca680 | 4491 | uiout->field_string ("thread-id", print_thread_id (thr)); |
f303dbd6 PA |
4492 | |
4493 | name = thr->name != NULL ? thr->name : target_thread_name (thr); | |
4494 | if (name != NULL) | |
4495 | { | |
112e8700 | 4496 | uiout->text (" \""); |
33eca680 | 4497 | uiout->field_string ("name", name); |
112e8700 | 4498 | uiout->text ("\""); |
f303dbd6 PA |
4499 | } |
4500 | ||
112e8700 | 4501 | uiout->text (" hit "); |
f303dbd6 PA |
4502 | } |
4503 | } | |
4504 | ||
e514a9d6 | 4505 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4506 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4507 | 'print_it' in the bpstat structure. Under some circumstances we |
4508 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4509 | normal_stop(). */ |
e514a9d6 JM |
4510 | |
4511 | static enum print_stop_action | |
4512 | print_bp_stop_message (bpstat bs) | |
4513 | { | |
4514 | switch (bs->print_it) | |
4515 | { | |
4516 | case print_it_noop: | |
4a64f543 | 4517 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4518 | return PRINT_UNKNOWN; |
4519 | break; | |
4520 | ||
4521 | case print_it_done: | |
4522 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4523 | relevant messages. */ |
e514a9d6 JM |
4524 | return PRINT_SRC_AND_LOC; |
4525 | break; | |
4526 | ||
4527 | case print_it_normal: | |
4f8d1dc6 | 4528 | { |
f431efe5 PA |
4529 | struct breakpoint *b = bs->breakpoint_at; |
4530 | ||
1a6a67de TJB |
4531 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4532 | which has since been deleted. */ | |
4533 | if (b == NULL) | |
4534 | return PRINT_UNKNOWN; | |
4535 | ||
348d480f PA |
4536 | /* Normal case. Call the breakpoint's print_it method. */ |
4537 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4538 | } |
348d480f | 4539 | break; |
3086aeae | 4540 | |
e514a9d6 | 4541 | default: |
8e65ff28 | 4542 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4543 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4544 | break; |
c906108c | 4545 | } |
c906108c SS |
4546 | } |
4547 | ||
edcc5120 TT |
4548 | /* A helper function that prints a shared library stopped event. */ |
4549 | ||
4550 | static void | |
4551 | print_solib_event (int is_catchpoint) | |
4552 | { | |
6fb16ce6 | 4553 | bool any_deleted = !current_program_space->deleted_solibs.empty (); |
bcb430e4 | 4554 | bool any_added = !current_program_space->added_solibs.empty (); |
edcc5120 TT |
4555 | |
4556 | if (!is_catchpoint) | |
4557 | { | |
4558 | if (any_added || any_deleted) | |
112e8700 | 4559 | current_uiout->text (_("Stopped due to shared library event:\n")); |
edcc5120 | 4560 | else |
112e8700 SM |
4561 | current_uiout->text (_("Stopped due to shared library event (no " |
4562 | "libraries added or removed)\n")); | |
edcc5120 TT |
4563 | } |
4564 | ||
112e8700 SM |
4565 | if (current_uiout->is_mi_like_p ()) |
4566 | current_uiout->field_string ("reason", | |
4567 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
edcc5120 TT |
4568 | |
4569 | if (any_deleted) | |
4570 | { | |
112e8700 | 4571 | current_uiout->text (_(" Inferior unloaded ")); |
10f489e5 | 4572 | ui_out_emit_list list_emitter (current_uiout, "removed"); |
6fb16ce6 | 4573 | for (int ix = 0; ix < current_program_space->deleted_solibs.size (); ix++) |
edcc5120 | 4574 | { |
6fb16ce6 SM |
4575 | const std::string &name = current_program_space->deleted_solibs[ix]; |
4576 | ||
edcc5120 | 4577 | if (ix > 0) |
112e8700 SM |
4578 | current_uiout->text (" "); |
4579 | current_uiout->field_string ("library", name); | |
4580 | current_uiout->text ("\n"); | |
edcc5120 | 4581 | } |
edcc5120 TT |
4582 | } |
4583 | ||
4584 | if (any_added) | |
4585 | { | |
112e8700 | 4586 | current_uiout->text (_(" Inferior loaded ")); |
10f489e5 | 4587 | ui_out_emit_list list_emitter (current_uiout, "added"); |
bcb430e4 | 4588 | bool first = true; |
52941706 | 4589 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 | 4590 | { |
bcb430e4 | 4591 | if (!first) |
112e8700 | 4592 | current_uiout->text (" "); |
bcb430e4 | 4593 | first = false; |
112e8700 SM |
4594 | current_uiout->field_string ("library", iter->so_name); |
4595 | current_uiout->text ("\n"); | |
edcc5120 | 4596 | } |
edcc5120 TT |
4597 | } |
4598 | } | |
4599 | ||
e514a9d6 JM |
4600 | /* Print a message indicating what happened. This is called from |
4601 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4602 | list - a list of the eventpoints that caused this stop. KIND is |
4603 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4604 | routine calls the generic print routine for printing a message |
4605 | about reasons for stopping. This will print (for example) the | |
4606 | "Breakpoint n," part of the output. The return value of this | |
4607 | routine is one of: | |
c906108c | 4608 | |
4a64f543 | 4609 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4610 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4611 | code to print the location. An example is |
c5aa993b JM |
4612 | "Breakpoint 1, " which should be followed by |
4613 | the location. | |
917317f4 | 4614 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4615 | to also print the location part of the message. |
4616 | An example is the catch/throw messages, which | |
4a64f543 | 4617 | don't require a location appended to the end. |
917317f4 | 4618 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4619 | further info to be printed. */ |
c906108c | 4620 | |
917317f4 | 4621 | enum print_stop_action |
36dfb11c | 4622 | bpstat_print (bpstat bs, int kind) |
c906108c | 4623 | { |
f486487f | 4624 | enum print_stop_action val; |
c5aa993b | 4625 | |
c906108c | 4626 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4627 | (Currently all watchpoints go on the bpstat whether hit or not. |
4628 | That probably could (should) be changed, provided care is taken | |
c906108c | 4629 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4630 | for (; bs; bs = bs->next) |
4631 | { | |
4632 | val = print_bp_stop_message (bs); | |
4633 | if (val == PRINT_SRC_ONLY | |
4634 | || val == PRINT_SRC_AND_LOC | |
4635 | || val == PRINT_NOTHING) | |
4636 | return val; | |
4637 | } | |
c906108c | 4638 | |
36dfb11c TT |
4639 | /* If we had hit a shared library event breakpoint, |
4640 | print_bp_stop_message would print out this message. If we hit an | |
4641 | OS-level shared library event, do the same thing. */ | |
4642 | if (kind == TARGET_WAITKIND_LOADED) | |
4643 | { | |
edcc5120 | 4644 | print_solib_event (0); |
36dfb11c TT |
4645 | return PRINT_NOTHING; |
4646 | } | |
4647 | ||
e514a9d6 | 4648 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4649 | with and nothing was printed. */ |
917317f4 | 4650 | return PRINT_UNKNOWN; |
c906108c SS |
4651 | } |
4652 | ||
bf469271 | 4653 | /* Evaluate the boolean expression EXP and return the result. */ |
c906108c | 4654 | |
bf469271 PA |
4655 | static bool |
4656 | breakpoint_cond_eval (expression *exp) | |
c906108c | 4657 | { |
278cd55f | 4658 | struct value *mark = value_mark (); |
bf469271 | 4659 | bool res = value_true (evaluate_expression (exp)); |
cc59ec59 | 4660 | |
c906108c | 4661 | value_free_to_mark (mark); |
bf469271 | 4662 | return res; |
c906108c SS |
4663 | } |
4664 | ||
5760d0ab | 4665 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c | 4666 | |
04afa70c TT |
4667 | bpstats::bpstats (struct bp_location *bl, bpstat **bs_link_pointer) |
4668 | : next (NULL), | |
4669 | bp_location_at (bl), | |
4670 | breakpoint_at (bl->owner), | |
4671 | commands (NULL), | |
04afa70c TT |
4672 | print (0), |
4673 | stop (0), | |
4674 | print_it (print_it_normal) | |
c906108c | 4675 | { |
f431efe5 | 4676 | incref_bp_location (bl); |
04afa70c TT |
4677 | **bs_link_pointer = this; |
4678 | *bs_link_pointer = &next; | |
4679 | } | |
4680 | ||
4681 | bpstats::bpstats () | |
4682 | : next (NULL), | |
4683 | bp_location_at (NULL), | |
4684 | breakpoint_at (NULL), | |
4685 | commands (NULL), | |
04afa70c TT |
4686 | print (0), |
4687 | stop (0), | |
4688 | print_it (print_it_normal) | |
4689 | { | |
c906108c SS |
4690 | } |
4691 | \f | |
d983da9c DJ |
4692 | /* The target has stopped with waitstatus WS. Check if any hardware |
4693 | watchpoints have triggered, according to the target. */ | |
4694 | ||
4695 | int | |
4696 | watchpoints_triggered (struct target_waitstatus *ws) | |
4697 | { | |
57810aa7 | 4698 | bool stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4699 | CORE_ADDR addr; |
4700 | struct breakpoint *b; | |
4701 | ||
4702 | if (!stopped_by_watchpoint) | |
4703 | { | |
4704 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4705 | as not triggered. */ | |
4706 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4707 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4708 | { |
4709 | struct watchpoint *w = (struct watchpoint *) b; | |
4710 | ||
4711 | w->watchpoint_triggered = watch_triggered_no; | |
4712 | } | |
d983da9c DJ |
4713 | |
4714 | return 0; | |
4715 | } | |
4716 | ||
8b88a78e | 4717 | if (!target_stopped_data_address (current_top_target (), &addr)) |
d983da9c DJ |
4718 | { |
4719 | /* We were stopped by a watchpoint, but we don't know where. | |
4720 | Mark all watchpoints as unknown. */ | |
4721 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4722 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4723 | { |
4724 | struct watchpoint *w = (struct watchpoint *) b; | |
4725 | ||
4726 | w->watchpoint_triggered = watch_triggered_unknown; | |
4727 | } | |
d983da9c | 4728 | |
3c4797ba | 4729 | return 1; |
d983da9c DJ |
4730 | } |
4731 | ||
4732 | /* The target could report the data address. Mark watchpoints | |
4733 | affected by this data address as triggered, and all others as not | |
4734 | triggered. */ | |
4735 | ||
4736 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4737 | if (is_hardware_watchpoint (b)) |
d983da9c | 4738 | { |
3a5c3e22 | 4739 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4740 | struct bp_location *loc; |
d983da9c | 4741 | |
3a5c3e22 | 4742 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4743 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4744 | { |
3a5c3e22 | 4745 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4746 | { |
3a5c3e22 PA |
4747 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4748 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4749 | |
4750 | if (newaddr == start) | |
4751 | { | |
3a5c3e22 | 4752 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4753 | break; |
4754 | } | |
4755 | } | |
4756 | /* Exact match not required. Within range is sufficient. */ | |
8b88a78e | 4757 | else if (target_watchpoint_addr_within_range (current_top_target (), |
9c06b0b4 TJB |
4758 | addr, loc->address, |
4759 | loc->length)) | |
4760 | { | |
3a5c3e22 | 4761 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4762 | break; |
4763 | } | |
4764 | } | |
d983da9c DJ |
4765 | } |
4766 | ||
4767 | return 1; | |
4768 | } | |
4769 | ||
bf469271 PA |
4770 | /* Possible return values for watchpoint_check. */ |
4771 | enum wp_check_result | |
4772 | { | |
4773 | /* The watchpoint has been deleted. */ | |
4774 | WP_DELETED = 1, | |
4775 | ||
4776 | /* The value has changed. */ | |
4777 | WP_VALUE_CHANGED = 2, | |
4778 | ||
4779 | /* The value has not changed. */ | |
4780 | WP_VALUE_NOT_CHANGED = 3, | |
4781 | ||
4782 | /* Ignore this watchpoint, no matter if the value changed or not. */ | |
4783 | WP_IGNORE = 4, | |
4784 | }; | |
c906108c SS |
4785 | |
4786 | #define BP_TEMPFLAG 1 | |
4787 | #define BP_HARDWAREFLAG 2 | |
4788 | ||
4a64f543 | 4789 | /* Evaluate watchpoint condition expression and check if its value |
bf469271 | 4790 | changed. */ |
553e4c11 | 4791 | |
bf469271 PA |
4792 | static wp_check_result |
4793 | watchpoint_check (bpstat bs) | |
c906108c | 4794 | { |
3a5c3e22 | 4795 | struct watchpoint *b; |
c906108c SS |
4796 | struct frame_info *fr; |
4797 | int within_current_scope; | |
4798 | ||
f431efe5 | 4799 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4800 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4801 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4802 | |
f6bc2008 PA |
4803 | /* If this is a local watchpoint, we only want to check if the |
4804 | watchpoint frame is in scope if the current thread is the thread | |
4805 | that was used to create the watchpoint. */ | |
4806 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4807 | return WP_IGNORE; |
f6bc2008 | 4808 | |
c906108c SS |
4809 | if (b->exp_valid_block == NULL) |
4810 | within_current_scope = 1; | |
4811 | else | |
4812 | { | |
edb3359d DJ |
4813 | struct frame_info *frame = get_current_frame (); |
4814 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4815 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4816 | ||
c9cf6e20 | 4817 | /* stack_frame_destroyed_p() returns a non-zero value if we're |
4a64f543 MS |
4818 | still in the function but the stack frame has already been |
4819 | invalidated. Since we can't rely on the values of local | |
4820 | variables after the stack has been destroyed, we are treating | |
4821 | the watchpoint in that state as `not changed' without further | |
4822 | checking. Don't mark watchpoints as changed if the current | |
4823 | frame is in an epilogue - even if they are in some other | |
4824 | frame, our view of the stack is likely to be wrong and | |
4825 | frame_find_by_id could error out. */ | |
c9cf6e20 | 4826 | if (gdbarch_stack_frame_destroyed_p (frame_arch, frame_pc)) |
60e1c644 | 4827 | return WP_IGNORE; |
a0f49112 | 4828 | |
101dcfbe | 4829 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4830 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4831 | |
4832 | /* If we've gotten confused in the unwinder, we might have | |
4833 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4834 | if (within_current_scope) |
4835 | { | |
4836 | struct symbol *function; | |
4837 | ||
4838 | function = get_frame_function (fr); | |
4839 | if (function == NULL | |
4840 | || !contained_in (b->exp_valid_block, | |
4841 | SYMBOL_BLOCK_VALUE (function))) | |
4842 | within_current_scope = 0; | |
4843 | } | |
69fbadd5 | 4844 | |
edb3359d | 4845 | if (within_current_scope) |
c906108c SS |
4846 | /* If we end up stopping, the current frame will get selected |
4847 | in normal_stop. So this call to select_frame won't affect | |
4848 | the user. */ | |
0f7d239c | 4849 | select_frame (fr); |
c906108c | 4850 | } |
c5aa993b | 4851 | |
c906108c SS |
4852 | if (within_current_scope) |
4853 | { | |
4a64f543 MS |
4854 | /* We use value_{,free_to_}mark because it could be a *long* |
4855 | time before we return to the command level and call | |
4856 | free_all_values. We can't call free_all_values because we | |
4857 | might be in the middle of evaluating a function call. */ | |
c906108c | 4858 | |
0cf6dd15 | 4859 | int pc = 0; |
9c06b0b4 | 4860 | struct value *mark; |
fa4727a6 DJ |
4861 | struct value *new_val; |
4862 | ||
c1fc2657 | 4863 | if (is_masked_watchpoint (b)) |
9c06b0b4 TJB |
4864 | /* Since we don't know the exact trigger address (from |
4865 | stopped_data_address), just tell the user we've triggered | |
4866 | a mask watchpoint. */ | |
4867 | return WP_VALUE_CHANGED; | |
4868 | ||
4869 | mark = value_mark (); | |
4d01a485 | 4870 | fetch_subexp_value (b->exp.get (), &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4871 | |
bb9d5f81 PP |
4872 | if (b->val_bitsize != 0) |
4873 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
4874 | ||
4a64f543 MS |
4875 | /* We use value_equal_contents instead of value_equal because |
4876 | the latter coerces an array to a pointer, thus comparing just | |
4877 | the address of the array instead of its contents. This is | |
4878 | not what we want. */ | |
fa4727a6 | 4879 | if ((b->val != NULL) != (new_val != NULL) |
850645cf TT |
4880 | || (b->val != NULL && !value_equal_contents (b->val.get (), |
4881 | new_val))) | |
c906108c | 4882 | { |
c906108c | 4883 | bs->old_val = b->val; |
850645cf | 4884 | b->val = release_value (new_val); |
4c1d86d9 | 4885 | b->val_valid = true; |
850645cf TT |
4886 | if (new_val != NULL) |
4887 | value_free_to_mark (mark); | |
c906108c SS |
4888 | return WP_VALUE_CHANGED; |
4889 | } | |
4890 | else | |
4891 | { | |
60e1c644 | 4892 | /* Nothing changed. */ |
c906108c | 4893 | value_free_to_mark (mark); |
c906108c SS |
4894 | return WP_VALUE_NOT_CHANGED; |
4895 | } | |
4896 | } | |
4897 | else | |
4898 | { | |
4899 | /* This seems like the only logical thing to do because | |
c5aa993b JM |
4900 | if we temporarily ignored the watchpoint, then when |
4901 | we reenter the block in which it is valid it contains | |
4902 | garbage (in the case of a function, it may have two | |
4903 | garbage values, one before and one after the prologue). | |
4904 | So we can't even detect the first assignment to it and | |
4905 | watch after that (since the garbage may or may not equal | |
4906 | the first value assigned). */ | |
348d480f PA |
4907 | /* We print all the stop information in |
4908 | breakpoint_ops->print_it, but in this case, by the time we | |
4909 | call breakpoint_ops->print_it this bp will be deleted | |
4910 | already. So we have no choice but print the information | |
4911 | here. */ | |
468afe6c | 4912 | |
0e454242 | 4913 | SWITCH_THRU_ALL_UIS () |
468afe6c PA |
4914 | { |
4915 | struct ui_out *uiout = current_uiout; | |
4916 | ||
112e8700 SM |
4917 | if (uiout->is_mi_like_p ()) |
4918 | uiout->field_string | |
4919 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
6a831f06 PA |
4920 | uiout->message ("\nWatchpoint %pF deleted because the program has " |
4921 | "left the block in\n" | |
4922 | "which its expression is valid.\n", | |
4923 | signed_field ("wpnum", b->number)); | |
468afe6c | 4924 | } |
4ce44c66 | 4925 | |
cdac0397 | 4926 | /* Make sure the watchpoint's commands aren't executed. */ |
d1b0a7bf | 4927 | b->commands = NULL; |
d0fb5eae | 4928 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4929 | |
4930 | return WP_DELETED; | |
4931 | } | |
4932 | } | |
4933 | ||
18a18393 | 4934 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4935 | breakpoint location BL. This function does not check if we should |
4936 | stop, only if BL explains the stop. */ | |
4937 | ||
18a18393 | 4938 | static int |
6c95b8df | 4939 | bpstat_check_location (const struct bp_location *bl, |
accd0bcd | 4940 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 4941 | const struct target_waitstatus *ws) |
18a18393 VP |
4942 | { |
4943 | struct breakpoint *b = bl->owner; | |
4944 | ||
348d480f | 4945 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4946 | gdb_assert (b != NULL); |
4947 | ||
bd522513 | 4948 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4949 | } |
4950 | ||
3a5c3e22 PA |
4951 | /* Determine if the watched values have actually changed, and we |
4952 | should stop. If not, set BS->stop to 0. */ | |
4953 | ||
18a18393 VP |
4954 | static void |
4955 | bpstat_check_watchpoint (bpstat bs) | |
4956 | { | |
2bdf28a0 | 4957 | const struct bp_location *bl; |
3a5c3e22 | 4958 | struct watchpoint *b; |
2bdf28a0 JK |
4959 | |
4960 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4961 | bl = bs->bp_location_at; |
2bdf28a0 | 4962 | gdb_assert (bl != NULL); |
3a5c3e22 | 4963 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4964 | gdb_assert (b != NULL); |
18a18393 | 4965 | |
18a18393 | 4966 | { |
18a18393 VP |
4967 | int must_check_value = 0; |
4968 | ||
c1fc2657 | 4969 | if (b->type == bp_watchpoint) |
18a18393 VP |
4970 | /* For a software watchpoint, we must always check the |
4971 | watched value. */ | |
4972 | must_check_value = 1; | |
4973 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4974 | /* We have a hardware watchpoint (read, write, or access) | |
4975 | and the target earlier reported an address watched by | |
4976 | this watchpoint. */ | |
4977 | must_check_value = 1; | |
4978 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
c1fc2657 | 4979 | && b->type == bp_hardware_watchpoint) |
18a18393 VP |
4980 | /* We were stopped by a hardware watchpoint, but the target could |
4981 | not report the data address. We must check the watchpoint's | |
4982 | value. Access and read watchpoints are out of luck; without | |
4983 | a data address, we can't figure it out. */ | |
4984 | must_check_value = 1; | |
3a5c3e22 | 4985 | |
18a18393 VP |
4986 | if (must_check_value) |
4987 | { | |
bf469271 PA |
4988 | wp_check_result e; |
4989 | ||
a70b8144 | 4990 | try |
bf469271 PA |
4991 | { |
4992 | e = watchpoint_check (bs); | |
4993 | } | |
230d2906 | 4994 | catch (const gdb_exception &ex) |
bf469271 PA |
4995 | { |
4996 | exception_fprintf (gdb_stderr, ex, | |
4997 | "Error evaluating expression " | |
4998 | "for watchpoint %d\n", | |
4999 | b->number); | |
5000 | ||
5001 | SWITCH_THRU_ALL_UIS () | |
5002 | { | |
5003 | printf_filtered (_("Watchpoint %d deleted.\n"), | |
5004 | b->number); | |
5005 | } | |
5006 | watchpoint_del_at_next_stop (b); | |
5007 | e = WP_DELETED; | |
5008 | } | |
bf469271 | 5009 | |
18a18393 VP |
5010 | switch (e) |
5011 | { | |
5012 | case WP_DELETED: | |
5013 | /* We've already printed what needs to be printed. */ | |
5014 | bs->print_it = print_it_done; | |
5015 | /* Stop. */ | |
5016 | break; | |
60e1c644 PA |
5017 | case WP_IGNORE: |
5018 | bs->print_it = print_it_noop; | |
5019 | bs->stop = 0; | |
5020 | break; | |
18a18393 | 5021 | case WP_VALUE_CHANGED: |
c1fc2657 | 5022 | if (b->type == bp_read_watchpoint) |
18a18393 | 5023 | { |
85d721b8 PA |
5024 | /* There are two cases to consider here: |
5025 | ||
4a64f543 | 5026 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5027 | In that case, trust the target, and always report |
5028 | the watchpoint hit to the user. Even though | |
5029 | reads don't cause value changes, the value may | |
5030 | have changed since the last time it was read, and | |
5031 | since we're not trapping writes, we will not see | |
5032 | those, and as such we should ignore our notion of | |
5033 | old value. | |
5034 | ||
4a64f543 | 5035 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5036 | reads and writes. There are two ways this may |
5037 | happen: | |
5038 | ||
4a64f543 | 5039 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5040 | reads only, but can break on accesses (reads or |
5041 | writes), such as e.g., x86. We detect this case | |
5042 | at the time we try to insert read watchpoints. | |
5043 | ||
4a64f543 | 5044 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5045 | watchpoints, but, the user set an access or write |
5046 | watchpoint watching the same memory as this read | |
5047 | watchpoint. | |
5048 | ||
5049 | If we're watching memory writes as well as reads, | |
5050 | ignore watchpoint hits when we find that the | |
5051 | value hasn't changed, as reads don't cause | |
5052 | changes. This still gives false positives when | |
5053 | the program writes the same value to memory as | |
5054 | what there was already in memory (we will confuse | |
5055 | it for a read), but it's much better than | |
5056 | nothing. */ | |
5057 | ||
5058 | int other_write_watchpoint = 0; | |
5059 | ||
5060 | if (bl->watchpoint_type == hw_read) | |
5061 | { | |
5062 | struct breakpoint *other_b; | |
5063 | ||
5064 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5065 | if (other_b->type == bp_hardware_watchpoint |
5066 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5067 | { |
3a5c3e22 PA |
5068 | struct watchpoint *other_w = |
5069 | (struct watchpoint *) other_b; | |
5070 | ||
5071 | if (other_w->watchpoint_triggered | |
5072 | == watch_triggered_yes) | |
5073 | { | |
5074 | other_write_watchpoint = 1; | |
5075 | break; | |
5076 | } | |
85d721b8 PA |
5077 | } |
5078 | } | |
5079 | ||
5080 | if (other_write_watchpoint | |
5081 | || bl->watchpoint_type == hw_access) | |
5082 | { | |
5083 | /* We're watching the same memory for writes, | |
5084 | and the value changed since the last time we | |
5085 | updated it, so this trap must be for a write. | |
5086 | Ignore it. */ | |
5087 | bs->print_it = print_it_noop; | |
5088 | bs->stop = 0; | |
5089 | } | |
18a18393 VP |
5090 | } |
5091 | break; | |
5092 | case WP_VALUE_NOT_CHANGED: | |
c1fc2657 SM |
5093 | if (b->type == bp_hardware_watchpoint |
5094 | || b->type == bp_watchpoint) | |
18a18393 VP |
5095 | { |
5096 | /* Don't stop: write watchpoints shouldn't fire if | |
5097 | the value hasn't changed. */ | |
5098 | bs->print_it = print_it_noop; | |
5099 | bs->stop = 0; | |
5100 | } | |
5101 | /* Stop. */ | |
5102 | break; | |
5103 | default: | |
5104 | /* Can't happen. */ | |
18a18393 VP |
5105 | break; |
5106 | } | |
5107 | } | |
5108 | else /* must_check_value == 0 */ | |
5109 | { | |
5110 | /* This is a case where some watchpoint(s) triggered, but | |
5111 | not at the address of this watchpoint, or else no | |
5112 | watchpoint triggered after all. So don't print | |
5113 | anything for this watchpoint. */ | |
5114 | bs->print_it = print_it_noop; | |
5115 | bs->stop = 0; | |
5116 | } | |
5117 | } | |
5118 | } | |
5119 | ||
7d4df6a4 DE |
5120 | /* For breakpoints that are currently marked as telling gdb to stop, |
5121 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5122 | of breakpoint referred to by BS. If we should not stop for this |
5123 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5124 | |
18a18393 | 5125 | static void |
00431a78 | 5126 | bpstat_check_breakpoint_conditions (bpstat bs, thread_info *thread) |
18a18393 | 5127 | { |
2bdf28a0 JK |
5128 | const struct bp_location *bl; |
5129 | struct breakpoint *b; | |
bf469271 PA |
5130 | /* Assume stop. */ |
5131 | bool condition_result = true; | |
7d4df6a4 DE |
5132 | struct expression *cond; |
5133 | ||
5134 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5135 | |
5136 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5137 | bl = bs->bp_location_at; |
2bdf28a0 | 5138 | gdb_assert (bl != NULL); |
f431efe5 | 5139 | b = bs->breakpoint_at; |
2bdf28a0 | 5140 | gdb_assert (b != NULL); |
18a18393 | 5141 | |
b775012e LM |
5142 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5143 | need to do so again since GDB does not know if we stopped due to a | |
5144 | breakpoint or a single step breakpoint. */ | |
5145 | ||
18a18393 | 5146 | if (frame_id_p (b->frame_id) |
edb3359d | 5147 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5148 | { |
7d4df6a4 DE |
5149 | bs->stop = 0; |
5150 | return; | |
5151 | } | |
60e1c644 | 5152 | |
12ab52e9 PA |
5153 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5154 | evaluating the condition if this isn't the specified | |
5155 | thread/task. */ | |
00431a78 PA |
5156 | if ((b->thread != -1 && b->thread != thread->global_num) |
5157 | || (b->task != 0 && b->task != ada_get_task_number (thread))) | |
6c1b0f7b DE |
5158 | { |
5159 | bs->stop = 0; | |
5160 | return; | |
5161 | } | |
5162 | ||
6dddc817 DE |
5163 | /* Evaluate extension language breakpoints that have a "stop" method |
5164 | implemented. */ | |
5165 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5166 | |
7d4df6a4 DE |
5167 | if (is_watchpoint (b)) |
5168 | { | |
5169 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5170 | |
4d01a485 | 5171 | cond = w->cond_exp.get (); |
7d4df6a4 DE |
5172 | } |
5173 | else | |
4d01a485 | 5174 | cond = bl->cond.get (); |
60e1c644 | 5175 | |
7d4df6a4 DE |
5176 | if (cond && b->disposition != disp_del_at_next_stop) |
5177 | { | |
5178 | int within_current_scope = 1; | |
5179 | struct watchpoint * w; | |
60e1c644 | 5180 | |
7d4df6a4 DE |
5181 | /* We use value_mark and value_free_to_mark because it could |
5182 | be a long time before we return to the command level and | |
5183 | call free_all_values. We can't call free_all_values | |
5184 | because we might be in the middle of evaluating a | |
5185 | function call. */ | |
5186 | struct value *mark = value_mark (); | |
5187 | ||
5188 | if (is_watchpoint (b)) | |
5189 | w = (struct watchpoint *) b; | |
5190 | else | |
5191 | w = NULL; | |
5192 | ||
5193 | /* Need to select the frame, with all that implies so that | |
5194 | the conditions will have the right context. Because we | |
5195 | use the frame, we will not see an inlined function's | |
5196 | variables when we arrive at a breakpoint at the start | |
5197 | of the inlined function; the current frame will be the | |
5198 | call site. */ | |
5199 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5200 | select_frame (get_current_frame ()); | |
5201 | else | |
18a18393 | 5202 | { |
7d4df6a4 DE |
5203 | struct frame_info *frame; |
5204 | ||
5205 | /* For local watchpoint expressions, which particular | |
5206 | instance of a local is being watched matters, so we | |
5207 | keep track of the frame to evaluate the expression | |
5208 | in. To evaluate the condition however, it doesn't | |
5209 | really matter which instantiation of the function | |
5210 | where the condition makes sense triggers the | |
5211 | watchpoint. This allows an expression like "watch | |
5212 | global if q > 10" set in `func', catch writes to | |
5213 | global on all threads that call `func', or catch | |
5214 | writes on all recursive calls of `func' by a single | |
5215 | thread. We simply always evaluate the condition in | |
5216 | the innermost frame that's executing where it makes | |
5217 | sense to evaluate the condition. It seems | |
5218 | intuitive. */ | |
5219 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5220 | if (frame != NULL) | |
5221 | select_frame (frame); | |
5222 | else | |
5223 | within_current_scope = 0; | |
18a18393 | 5224 | } |
7d4df6a4 | 5225 | if (within_current_scope) |
bf469271 | 5226 | { |
a70b8144 | 5227 | try |
bf469271 PA |
5228 | { |
5229 | condition_result = breakpoint_cond_eval (cond); | |
5230 | } | |
230d2906 | 5231 | catch (const gdb_exception &ex) |
bf469271 PA |
5232 | { |
5233 | exception_fprintf (gdb_stderr, ex, | |
5234 | "Error in testing breakpoint condition:\n"); | |
5235 | } | |
bf469271 | 5236 | } |
7d4df6a4 | 5237 | else |
18a18393 | 5238 | { |
7d4df6a4 DE |
5239 | warning (_("Watchpoint condition cannot be tested " |
5240 | "in the current scope")); | |
5241 | /* If we failed to set the right context for this | |
5242 | watchpoint, unconditionally report it. */ | |
18a18393 | 5243 | } |
7d4df6a4 DE |
5244 | /* FIXME-someday, should give breakpoint #. */ |
5245 | value_free_to_mark (mark); | |
18a18393 | 5246 | } |
7d4df6a4 | 5247 | |
bf469271 | 5248 | if (cond && !condition_result) |
7d4df6a4 DE |
5249 | { |
5250 | bs->stop = 0; | |
5251 | } | |
7d4df6a4 DE |
5252 | else if (b->ignore_count > 0) |
5253 | { | |
5254 | b->ignore_count--; | |
5255 | bs->stop = 0; | |
5256 | /* Increase the hit count even though we don't stop. */ | |
5257 | ++(b->hit_count); | |
76727919 | 5258 | gdb::observers::breakpoint_modified.notify (b); |
7d4df6a4 | 5259 | } |
18a18393 VP |
5260 | } |
5261 | ||
1cf4d951 PA |
5262 | /* Returns true if we need to track moribund locations of LOC's type |
5263 | on the current target. */ | |
5264 | ||
5265 | static int | |
5266 | need_moribund_for_location_type (struct bp_location *loc) | |
5267 | { | |
5268 | return ((loc->loc_type == bp_loc_software_breakpoint | |
5269 | && !target_supports_stopped_by_sw_breakpoint ()) | |
5270 | || (loc->loc_type == bp_loc_hardware_breakpoint | |
5271 | && !target_supports_stopped_by_hw_breakpoint ())); | |
5272 | } | |
5273 | ||
ddfe970e | 5274 | /* See breakpoint.h. */ |
c906108c SS |
5275 | |
5276 | bpstat | |
ddfe970e | 5277 | build_bpstat_chain (const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 5278 | const struct target_waitstatus *ws) |
c906108c | 5279 | { |
ddfe970e | 5280 | struct breakpoint *b; |
5760d0ab | 5281 | bpstat bs_head = NULL, *bs_link = &bs_head; |
c5aa993b | 5282 | |
429374b8 JK |
5283 | ALL_BREAKPOINTS (b) |
5284 | { | |
1a853c52 | 5285 | if (!breakpoint_enabled (b)) |
429374b8 | 5286 | continue; |
a5606eee | 5287 | |
ddfe970e | 5288 | for (bp_location *bl = b->loc; bl != NULL; bl = bl->next) |
429374b8 | 5289 | { |
4a64f543 MS |
5290 | /* For hardware watchpoints, we look only at the first |
5291 | location. The watchpoint_check function will work on the | |
5292 | entire expression, not the individual locations. For | |
5293 | read watchpoints, the watchpoints_triggered function has | |
5294 | checked all locations already. */ | |
429374b8 JK |
5295 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5296 | break; | |
18a18393 | 5297 | |
f6592439 | 5298 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5299 | continue; |
c5aa993b | 5300 | |
09ac7c10 | 5301 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5302 | continue; |
c5aa993b | 5303 | |
4a64f543 MS |
5304 | /* Come here if it's a watchpoint, or if the break address |
5305 | matches. */ | |
c5aa993b | 5306 | |
ddfe970e KS |
5307 | bpstat bs = new bpstats (bl, &bs_link); /* Alloc a bpstat to |
5308 | explain stop. */ | |
c5aa993b | 5309 | |
f431efe5 PA |
5310 | /* Assume we stop. Should we find a watchpoint that is not |
5311 | actually triggered, or if the condition of the breakpoint | |
5312 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5313 | bs->stop = 1; |
5314 | bs->print = 1; | |
d983da9c | 5315 | |
f431efe5 PA |
5316 | /* If this is a scope breakpoint, mark the associated |
5317 | watchpoint as triggered so that we will handle the | |
5318 | out-of-scope event. We'll get to the watchpoint next | |
5319 | iteration. */ | |
d0fb5eae | 5320 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5321 | { |
5322 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5323 | ||
5324 | w->watchpoint_triggered = watch_triggered_yes; | |
5325 | } | |
f431efe5 PA |
5326 | } |
5327 | } | |
5328 | ||
7c16b83e | 5329 | /* Check if a moribund breakpoint explains the stop. */ |
1cf4d951 PA |
5330 | if (!target_supports_stopped_by_sw_breakpoint () |
5331 | || !target_supports_stopped_by_hw_breakpoint ()) | |
f431efe5 | 5332 | { |
1123588c | 5333 | for (bp_location *loc : moribund_locations) |
f431efe5 | 5334 | { |
1cf4d951 PA |
5335 | if (breakpoint_location_address_match (loc, aspace, bp_addr) |
5336 | && need_moribund_for_location_type (loc)) | |
5337 | { | |
ddfe970e | 5338 | bpstat bs = new bpstats (loc, &bs_link); |
1cf4d951 PA |
5339 | /* For hits of moribund locations, we should just proceed. */ |
5340 | bs->stop = 0; | |
5341 | bs->print = 0; | |
5342 | bs->print_it = print_it_noop; | |
5343 | } | |
f431efe5 PA |
5344 | } |
5345 | } | |
5346 | ||
ddfe970e KS |
5347 | return bs_head; |
5348 | } | |
5349 | ||
5350 | /* See breakpoint.h. */ | |
5351 | ||
5352 | bpstat | |
5353 | bpstat_stop_status (const address_space *aspace, | |
00431a78 | 5354 | CORE_ADDR bp_addr, thread_info *thread, |
ddfe970e KS |
5355 | const struct target_waitstatus *ws, |
5356 | bpstat stop_chain) | |
5357 | { | |
5358 | struct breakpoint *b = NULL; | |
5359 | /* First item of allocated bpstat's. */ | |
5360 | bpstat bs_head = stop_chain; | |
5361 | bpstat bs; | |
5362 | int need_remove_insert; | |
5363 | int removed_any; | |
5364 | ||
5365 | /* First, build the bpstat chain with locations that explain a | |
5366 | target stop, while being careful to not set the target running, | |
5367 | as that may invalidate locations (in particular watchpoint | |
5368 | locations are recreated). Resuming will happen here with | |
5369 | breakpoint conditions or watchpoint expressions that include | |
5370 | inferior function calls. */ | |
5371 | if (bs_head == NULL) | |
5372 | bs_head = build_bpstat_chain (aspace, bp_addr, ws); | |
5373 | ||
edcc5120 TT |
5374 | /* A bit of special processing for shlib breakpoints. We need to |
5375 | process solib loading here, so that the lists of loaded and | |
5376 | unloaded libraries are correct before we handle "catch load" and | |
5377 | "catch unload". */ | |
5378 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5379 | { | |
5d268276 | 5380 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5381 | { |
5382 | handle_solib_event (); | |
5383 | break; | |
5384 | } | |
5385 | } | |
5386 | ||
f431efe5 PA |
5387 | /* Now go through the locations that caused the target to stop, and |
5388 | check whether we're interested in reporting this stop to higher | |
5389 | layers, or whether we should resume the target transparently. */ | |
5390 | ||
5391 | removed_any = 0; | |
5392 | ||
5760d0ab | 5393 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5394 | { |
5395 | if (!bs->stop) | |
5396 | continue; | |
5397 | ||
f431efe5 | 5398 | b = bs->breakpoint_at; |
348d480f PA |
5399 | b->ops->check_status (bs); |
5400 | if (bs->stop) | |
28010a5d | 5401 | { |
00431a78 | 5402 | bpstat_check_breakpoint_conditions (bs, thread); |
f431efe5 | 5403 | |
429374b8 JK |
5404 | if (bs->stop) |
5405 | { | |
5406 | ++(b->hit_count); | |
76727919 | 5407 | gdb::observers::breakpoint_modified.notify (b); |
c906108c | 5408 | |
4a64f543 | 5409 | /* We will stop here. */ |
429374b8 JK |
5410 | if (b->disposition == disp_disable) |
5411 | { | |
816338b5 | 5412 | --(b->enable_count); |
1a853c52 | 5413 | if (b->enable_count <= 0) |
429374b8 | 5414 | b->enable_state = bp_disabled; |
f431efe5 | 5415 | removed_any = 1; |
429374b8 JK |
5416 | } |
5417 | if (b->silent) | |
5418 | bs->print = 0; | |
5419 | bs->commands = b->commands; | |
abf85f46 | 5420 | if (command_line_is_silent (bs->commands |
d1b0a7bf | 5421 | ? bs->commands.get () : NULL)) |
abf85f46 | 5422 | bs->print = 0; |
9d6e6e84 HZ |
5423 | |
5424 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5425 | } |
5426 | ||
348d480f | 5427 | } |
a9b3a50f PA |
5428 | |
5429 | /* Print nothing for this entry if we don't stop or don't | |
5430 | print. */ | |
5431 | if (!bs->stop || !bs->print) | |
5432 | bs->print_it = print_it_noop; | |
429374b8 | 5433 | } |
876fa593 | 5434 | |
d983da9c DJ |
5435 | /* If we aren't stopping, the value of some hardware watchpoint may |
5436 | not have changed, but the intermediate memory locations we are | |
5437 | watching may have. Don't bother if we're stopping; this will get | |
5438 | done later. */ | |
d832cb68 | 5439 | need_remove_insert = 0; |
5760d0ab JK |
5440 | if (! bpstat_causes_stop (bs_head)) |
5441 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5442 | if (!bs->stop |
f431efe5 PA |
5443 | && bs->breakpoint_at |
5444 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5445 | { |
3a5c3e22 PA |
5446 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5447 | ||
5448 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5449 | need_remove_insert = 1; |
d983da9c DJ |
5450 | } |
5451 | ||
d832cb68 | 5452 | if (need_remove_insert) |
44702360 | 5453 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5454 | else if (removed_any) |
44702360 | 5455 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5456 | |
5760d0ab | 5457 | return bs_head; |
c906108c | 5458 | } |
628fe4e4 JK |
5459 | |
5460 | static void | |
5461 | handle_jit_event (void) | |
5462 | { | |
5463 | struct frame_info *frame; | |
5464 | struct gdbarch *gdbarch; | |
5465 | ||
243a9253 PA |
5466 | if (debug_infrun) |
5467 | fprintf_unfiltered (gdb_stdlog, "handling bp_jit_event\n"); | |
5468 | ||
628fe4e4 JK |
5469 | /* Switch terminal for any messages produced by |
5470 | breakpoint_re_set. */ | |
223ffa71 | 5471 | target_terminal::ours_for_output (); |
628fe4e4 JK |
5472 | |
5473 | frame = get_current_frame (); | |
5474 | gdbarch = get_frame_arch (frame); | |
5475 | ||
5476 | jit_event_handler (gdbarch); | |
5477 | ||
223ffa71 | 5478 | target_terminal::inferior (); |
628fe4e4 JK |
5479 | } |
5480 | ||
5481 | /* Prepare WHAT final decision for infrun. */ | |
5482 | ||
5483 | /* Decide what infrun needs to do with this bpstat. */ | |
5484 | ||
c906108c | 5485 | struct bpstat_what |
0e30163f | 5486 | bpstat_what (bpstat bs_head) |
c906108c | 5487 | { |
c906108c | 5488 | struct bpstat_what retval; |
0e30163f | 5489 | bpstat bs; |
c906108c | 5490 | |
628fe4e4 | 5491 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5492 | retval.call_dummy = STOP_NONE; |
e2d0f980 | 5493 | retval.is_longjmp = false; |
628fe4e4 | 5494 | |
0e30163f | 5495 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5496 | { |
628fe4e4 JK |
5497 | /* Extract this BS's action. After processing each BS, we check |
5498 | if its action overrides all we've seem so far. */ | |
5499 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5500 | enum bptype bptype; | |
5501 | ||
c906108c | 5502 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5503 | { |
5504 | /* I suspect this can happen if it was a momentary | |
5505 | breakpoint which has since been deleted. */ | |
5506 | bptype = bp_none; | |
5507 | } | |
20874c92 | 5508 | else |
f431efe5 | 5509 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5510 | |
5511 | switch (bptype) | |
c906108c SS |
5512 | { |
5513 | case bp_none: | |
628fe4e4 | 5514 | break; |
c906108c SS |
5515 | case bp_breakpoint: |
5516 | case bp_hardware_breakpoint: | |
7c16b83e | 5517 | case bp_single_step: |
c906108c SS |
5518 | case bp_until: |
5519 | case bp_finish: | |
a9b3a50f | 5520 | case bp_shlib_event: |
c906108c SS |
5521 | if (bs->stop) |
5522 | { | |
5523 | if (bs->print) | |
628fe4e4 | 5524 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5525 | else |
628fe4e4 | 5526 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5527 | } |
5528 | else | |
628fe4e4 | 5529 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5530 | break; |
5531 | case bp_watchpoint: | |
5532 | case bp_hardware_watchpoint: | |
5533 | case bp_read_watchpoint: | |
5534 | case bp_access_watchpoint: | |
5535 | if (bs->stop) | |
5536 | { | |
5537 | if (bs->print) | |
628fe4e4 | 5538 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5539 | else |
628fe4e4 | 5540 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5541 | } |
5542 | else | |
628fe4e4 JK |
5543 | { |
5544 | /* There was a watchpoint, but we're not stopping. | |
5545 | This requires no further action. */ | |
5546 | } | |
c906108c SS |
5547 | break; |
5548 | case bp_longjmp: | |
e2e4d78b | 5549 | case bp_longjmp_call_dummy: |
186c406b | 5550 | case bp_exception: |
0a39bb32 PA |
5551 | if (bs->stop) |
5552 | { | |
5553 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; | |
5554 | retval.is_longjmp = bptype != bp_exception; | |
5555 | } | |
5556 | else | |
5557 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5558 | break; |
5559 | case bp_longjmp_resume: | |
186c406b | 5560 | case bp_exception_resume: |
0a39bb32 PA |
5561 | if (bs->stop) |
5562 | { | |
5563 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; | |
5564 | retval.is_longjmp = bptype == bp_longjmp_resume; | |
5565 | } | |
5566 | else | |
5567 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c SS |
5568 | break; |
5569 | case bp_step_resume: | |
5570 | if (bs->stop) | |
628fe4e4 JK |
5571 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5572 | else | |
c906108c | 5573 | { |
628fe4e4 JK |
5574 | /* It is for the wrong frame. */ |
5575 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5576 | } |
c906108c | 5577 | break; |
2c03e5be PA |
5578 | case bp_hp_step_resume: |
5579 | if (bs->stop) | |
5580 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5581 | else | |
5582 | { | |
5583 | /* It is for the wrong frame. */ | |
5584 | this_action = BPSTAT_WHAT_SINGLE; | |
5585 | } | |
5586 | break; | |
c906108c | 5587 | case bp_watchpoint_scope: |
c4093a6a | 5588 | case bp_thread_event: |
1900040c | 5589 | case bp_overlay_event: |
0fd8e87f | 5590 | case bp_longjmp_master: |
aa7d318d | 5591 | case bp_std_terminate_master: |
186c406b | 5592 | case bp_exception_master: |
628fe4e4 | 5593 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5594 | break; |
ce78b96d | 5595 | case bp_catchpoint: |
c5aa993b JM |
5596 | if (bs->stop) |
5597 | { | |
5598 | if (bs->print) | |
628fe4e4 | 5599 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5600 | else |
628fe4e4 | 5601 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5602 | } |
5603 | else | |
628fe4e4 | 5604 | { |
cb1e4e32 PA |
5605 | /* Some catchpoints are implemented with breakpoints. |
5606 | For those, we need to step over the breakpoint. */ | |
5607 | if (bs->bp_location_at->loc_type != bp_loc_other) | |
5608 | this_action = BPSTAT_WHAT_SINGLE; | |
628fe4e4 JK |
5609 | } |
5610 | break; | |
628fe4e4 | 5611 | case bp_jit_event: |
628fe4e4 | 5612 | this_action = BPSTAT_WHAT_SINGLE; |
c5aa993b | 5613 | break; |
c906108c | 5614 | case bp_call_dummy: |
53a5351d JM |
5615 | /* Make sure the action is stop (silent or noisy), |
5616 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5617 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5618 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5619 | break; |
5620 | case bp_std_terminate: | |
5621 | /* Make sure the action is stop (silent or noisy), | |
5622 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5623 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5624 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5625 | break; |
1042e4c0 | 5626 | case bp_tracepoint: |
7a697b8d | 5627 | case bp_fast_tracepoint: |
0fb4aa4b | 5628 | case bp_static_tracepoint: |
1042e4c0 SS |
5629 | /* Tracepoint hits should not be reported back to GDB, and |
5630 | if one got through somehow, it should have been filtered | |
5631 | out already. */ | |
5632 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5633 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5634 | break; |
5635 | case bp_gnu_ifunc_resolver: | |
5636 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5637 | this_action = BPSTAT_WHAT_SINGLE; | |
5638 | break; | |
5639 | case bp_gnu_ifunc_resolver_return: | |
5640 | /* The breakpoint will be removed, execution will restart from the | |
5641 | PC of the former breakpoint. */ | |
5642 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5643 | break; | |
e7e0cddf SS |
5644 | |
5645 | case bp_dprintf: | |
a11cfd87 HZ |
5646 | if (bs->stop) |
5647 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5648 | else | |
5649 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5650 | break; |
5651 | ||
628fe4e4 JK |
5652 | default: |
5653 | internal_error (__FILE__, __LINE__, | |
5654 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5655 | } |
628fe4e4 | 5656 | |
325fac50 | 5657 | retval.main_action = std::max (retval.main_action, this_action); |
c906108c | 5658 | } |
628fe4e4 | 5659 | |
243a9253 PA |
5660 | return retval; |
5661 | } | |
628fe4e4 | 5662 | |
243a9253 PA |
5663 | void |
5664 | bpstat_run_callbacks (bpstat bs_head) | |
5665 | { | |
5666 | bpstat bs; | |
628fe4e4 | 5667 | |
0e30163f JK |
5668 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5669 | { | |
5670 | struct breakpoint *b = bs->breakpoint_at; | |
5671 | ||
5672 | if (b == NULL) | |
5673 | continue; | |
5674 | switch (b->type) | |
5675 | { | |
243a9253 PA |
5676 | case bp_jit_event: |
5677 | handle_jit_event (); | |
5678 | break; | |
0e30163f JK |
5679 | case bp_gnu_ifunc_resolver: |
5680 | gnu_ifunc_resolver_stop (b); | |
5681 | break; | |
5682 | case bp_gnu_ifunc_resolver_return: | |
5683 | gnu_ifunc_resolver_return_stop (b); | |
5684 | break; | |
5685 | } | |
5686 | } | |
c906108c SS |
5687 | } |
5688 | ||
4c462cb0 | 5689 | /* See breakpoint.h. */ |
c906108c | 5690 | |
4c462cb0 SM |
5691 | bool |
5692 | bpstat_should_step () | |
c906108c SS |
5693 | { |
5694 | struct breakpoint *b; | |
cc59ec59 | 5695 | |
c906108c | 5696 | ALL_BREAKPOINTS (b) |
717a8278 | 5697 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
4c462cb0 SM |
5698 | return true; |
5699 | return false; | |
c906108c SS |
5700 | } |
5701 | ||
4c462cb0 SM |
5702 | /* See breakpoint.h. */ |
5703 | ||
5704 | bool | |
67822962 PA |
5705 | bpstat_causes_stop (bpstat bs) |
5706 | { | |
5707 | for (; bs != NULL; bs = bs->next) | |
5708 | if (bs->stop) | |
4c462cb0 | 5709 | return true; |
67822962 | 5710 | |
4c462cb0 | 5711 | return false; |
67822962 PA |
5712 | } |
5713 | ||
c906108c | 5714 | \f |
c5aa993b | 5715 | |
170b53b2 UW |
5716 | /* Compute a string of spaces suitable to indent the next line |
5717 | so it starts at the position corresponding to the table column | |
5718 | named COL_NAME in the currently active table of UIOUT. */ | |
5719 | ||
5720 | static char * | |
5721 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5722 | { | |
5723 | static char wrap_indent[80]; | |
5724 | int i, total_width, width, align; | |
c5209615 | 5725 | const char *text; |
170b53b2 UW |
5726 | |
5727 | total_width = 0; | |
112e8700 | 5728 | for (i = 1; uiout->query_table_field (i, &width, &align, &text); i++) |
170b53b2 UW |
5729 | { |
5730 | if (strcmp (text, col_name) == 0) | |
5731 | { | |
5732 | gdb_assert (total_width < sizeof wrap_indent); | |
5733 | memset (wrap_indent, ' ', total_width); | |
5734 | wrap_indent[total_width] = 0; | |
5735 | ||
5736 | return wrap_indent; | |
5737 | } | |
5738 | ||
5739 | total_width += width + 1; | |
5740 | } | |
5741 | ||
5742 | return NULL; | |
5743 | } | |
5744 | ||
b775012e LM |
5745 | /* Determine if the locations of this breakpoint will have their conditions |
5746 | evaluated by the target, host or a mix of both. Returns the following: | |
5747 | ||
5748 | "host": Host evals condition. | |
5749 | "host or target": Host or Target evals condition. | |
5750 | "target": Target evals condition. | |
5751 | */ | |
5752 | ||
5753 | static const char * | |
5754 | bp_condition_evaluator (struct breakpoint *b) | |
5755 | { | |
5756 | struct bp_location *bl; | |
5757 | char host_evals = 0; | |
5758 | char target_evals = 0; | |
5759 | ||
5760 | if (!b) | |
5761 | return NULL; | |
5762 | ||
5763 | if (!is_breakpoint (b)) | |
5764 | return NULL; | |
5765 | ||
5766 | if (gdb_evaluates_breakpoint_condition_p () | |
5767 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5768 | return condition_evaluation_host; | |
5769 | ||
5770 | for (bl = b->loc; bl; bl = bl->next) | |
5771 | { | |
5772 | if (bl->cond_bytecode) | |
5773 | target_evals++; | |
5774 | else | |
5775 | host_evals++; | |
5776 | } | |
5777 | ||
5778 | if (host_evals && target_evals) | |
5779 | return condition_evaluation_both; | |
5780 | else if (target_evals) | |
5781 | return condition_evaluation_target; | |
5782 | else | |
5783 | return condition_evaluation_host; | |
5784 | } | |
5785 | ||
5786 | /* Determine the breakpoint location's condition evaluator. This is | |
5787 | similar to bp_condition_evaluator, but for locations. */ | |
5788 | ||
5789 | static const char * | |
5790 | bp_location_condition_evaluator (struct bp_location *bl) | |
5791 | { | |
5792 | if (bl && !is_breakpoint (bl->owner)) | |
5793 | return NULL; | |
5794 | ||
5795 | if (gdb_evaluates_breakpoint_condition_p () | |
5796 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5797 | return condition_evaluation_host; | |
5798 | ||
5799 | if (bl && bl->cond_bytecode) | |
5800 | return condition_evaluation_target; | |
5801 | else | |
5802 | return condition_evaluation_host; | |
5803 | } | |
5804 | ||
859825b8 JK |
5805 | /* Print the LOC location out of the list of B->LOC locations. */ |
5806 | ||
170b53b2 UW |
5807 | static void |
5808 | print_breakpoint_location (struct breakpoint *b, | |
5809 | struct bp_location *loc) | |
0d381245 | 5810 | { |
79a45e25 | 5811 | struct ui_out *uiout = current_uiout; |
5ed8105e PA |
5812 | |
5813 | scoped_restore_current_program_space restore_pspace; | |
6c95b8df | 5814 | |
859825b8 JK |
5815 | if (loc != NULL && loc->shlib_disabled) |
5816 | loc = NULL; | |
5817 | ||
6c95b8df PA |
5818 | if (loc != NULL) |
5819 | set_current_program_space (loc->pspace); | |
5820 | ||
56435ebe | 5821 | if (b->display_canonical) |
d28cd78a | 5822 | uiout->field_string ("what", event_location_to_string (b->location.get ())); |
2f202fde | 5823 | else if (loc && loc->symtab) |
0d381245 | 5824 | { |
4a27f119 KS |
5825 | const struct symbol *sym = loc->symbol; |
5826 | ||
0d381245 VP |
5827 | if (sym) |
5828 | { | |
112e8700 | 5829 | uiout->text ("in "); |
987012b8 | 5830 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 5831 | function_name_style.style ()); |
112e8700 SM |
5832 | uiout->text (" "); |
5833 | uiout->wrap_hint (wrap_indent_at_field (uiout, "what")); | |
5834 | uiout->text ("at "); | |
0d381245 | 5835 | } |
112e8700 | 5836 | uiout->field_string ("file", |
cbe56571 | 5837 | symtab_to_filename_for_display (loc->symtab), |
e43b10e1 | 5838 | file_name_style.style ()); |
112e8700 | 5839 | uiout->text (":"); |
05cba821 | 5840 | |
112e8700 SM |
5841 | if (uiout->is_mi_like_p ()) |
5842 | uiout->field_string ("fullname", symtab_to_fullname (loc->symtab)); | |
0d381245 | 5843 | |
381befee | 5844 | uiout->field_signed ("line", loc->line_number); |
0d381245 | 5845 | } |
859825b8 | 5846 | else if (loc) |
0d381245 | 5847 | { |
d7e74731 | 5848 | string_file stb; |
170b53b2 | 5849 | |
d7e74731 | 5850 | print_address_symbolic (loc->gdbarch, loc->address, &stb, |
22e722e1 | 5851 | demangle, ""); |
112e8700 | 5852 | uiout->field_stream ("at", stb); |
0d381245 | 5853 | } |
859825b8 | 5854 | else |
f00aae0f | 5855 | { |
d28cd78a TT |
5856 | uiout->field_string ("pending", |
5857 | event_location_to_string (b->location.get ())); | |
f00aae0f KS |
5858 | /* If extra_string is available, it could be holding a condition |
5859 | or dprintf arguments. In either case, make sure it is printed, | |
5860 | too, but only for non-MI streams. */ | |
112e8700 | 5861 | if (!uiout->is_mi_like_p () && b->extra_string != NULL) |
f00aae0f KS |
5862 | { |
5863 | if (b->type == bp_dprintf) | |
112e8700 | 5864 | uiout->text (","); |
f00aae0f | 5865 | else |
112e8700 SM |
5866 | uiout->text (" "); |
5867 | uiout->text (b->extra_string); | |
f00aae0f KS |
5868 | } |
5869 | } | |
6c95b8df | 5870 | |
b775012e LM |
5871 | if (loc && is_breakpoint (b) |
5872 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5873 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5874 | { | |
112e8700 SM |
5875 | uiout->text (" ("); |
5876 | uiout->field_string ("evaluated-by", | |
b775012e | 5877 | bp_location_condition_evaluator (loc)); |
112e8700 | 5878 | uiout->text (")"); |
b775012e | 5879 | } |
0d381245 VP |
5880 | } |
5881 | ||
269b11a2 PA |
5882 | static const char * |
5883 | bptype_string (enum bptype type) | |
c906108c | 5884 | { |
c4093a6a JM |
5885 | struct ep_type_description |
5886 | { | |
5887 | enum bptype type; | |
a121b7c1 | 5888 | const char *description; |
c4093a6a JM |
5889 | }; |
5890 | static struct ep_type_description bptypes[] = | |
c906108c | 5891 | { |
c5aa993b JM |
5892 | {bp_none, "?deleted?"}, |
5893 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5894 | {bp_hardware_breakpoint, "hw breakpoint"}, |
7c16b83e | 5895 | {bp_single_step, "sw single-step"}, |
c5aa993b JM |
5896 | {bp_until, "until"}, |
5897 | {bp_finish, "finish"}, | |
5898 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5899 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5900 | {bp_read_watchpoint, "read watchpoint"}, |
5901 | {bp_access_watchpoint, "acc watchpoint"}, | |
5902 | {bp_longjmp, "longjmp"}, | |
5903 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5904 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5905 | {bp_exception, "exception"}, |
5906 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5907 | {bp_step_resume, "step resume"}, |
2c03e5be | 5908 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5909 | {bp_watchpoint_scope, "watchpoint scope"}, |
5910 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5911 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5912 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5913 | {bp_thread_event, "thread events"}, |
1900040c | 5914 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5915 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5916 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5917 | {bp_exception_master, "exception master"}, |
ce78b96d | 5918 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5919 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5920 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5921 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5922 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5923 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5924 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5925 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5926 | }; |
269b11a2 PA |
5927 | |
5928 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5929 | || ((int) type != bptypes[(int) type].type)) | |
5930 | internal_error (__FILE__, __LINE__, | |
5931 | _("bptypes table does not describe type #%d."), | |
5932 | (int) type); | |
5933 | ||
5934 | return bptypes[(int) type].description; | |
5935 | } | |
5936 | ||
998580f1 MK |
5937 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5938 | For CLI, prefix the list with the string 'inf'. */ | |
5939 | ||
5940 | static void | |
5941 | output_thread_groups (struct ui_out *uiout, | |
5942 | const char *field_name, | |
5c632425 | 5943 | const std::vector<int> &inf_nums, |
998580f1 MK |
5944 | int mi_only) |
5945 | { | |
112e8700 | 5946 | int is_mi = uiout->is_mi_like_p (); |
998580f1 MK |
5947 | |
5948 | /* For backward compatibility, don't display inferiors in CLI unless | |
5949 | there are several. Always display them for MI. */ | |
5950 | if (!is_mi && mi_only) | |
5951 | return; | |
5952 | ||
10f489e5 | 5953 | ui_out_emit_list list_emitter (uiout, field_name); |
752eb8b4 | 5954 | |
5c632425 | 5955 | for (size_t i = 0; i < inf_nums.size (); i++) |
998580f1 MK |
5956 | { |
5957 | if (is_mi) | |
5958 | { | |
5959 | char mi_group[10]; | |
5960 | ||
5c632425 | 5961 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf_nums[i]); |
112e8700 | 5962 | uiout->field_string (NULL, mi_group); |
998580f1 MK |
5963 | } |
5964 | else | |
5965 | { | |
5966 | if (i == 0) | |
112e8700 | 5967 | uiout->text (" inf "); |
998580f1 | 5968 | else |
112e8700 | 5969 | uiout->text (", "); |
998580f1 | 5970 | |
5c632425 | 5971 | uiout->text (plongest (inf_nums[i])); |
998580f1 MK |
5972 | } |
5973 | } | |
998580f1 MK |
5974 | } |
5975 | ||
a38118e5 PA |
5976 | /* Print B to gdb_stdout. If RAW_LOC, print raw breakpoint locations |
5977 | instead of going via breakpoint_ops::print_one. This makes "maint | |
5978 | info breakpoints" show the software breakpoint locations of | |
5979 | catchpoints, which are considered internal implementation | |
5980 | detail. */ | |
269b11a2 PA |
5981 | |
5982 | static void | |
5983 | print_one_breakpoint_location (struct breakpoint *b, | |
5984 | struct bp_location *loc, | |
5985 | int loc_number, | |
5986 | struct bp_location **last_loc, | |
a38118e5 | 5987 | int allflag, bool raw_loc) |
269b11a2 PA |
5988 | { |
5989 | struct command_line *l; | |
c2c6d25f | 5990 | static char bpenables[] = "nynny"; |
c906108c | 5991 | |
79a45e25 | 5992 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5993 | int header_of_multiple = 0; |
5994 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5995 | struct value_print_options opts; |
5996 | ||
5997 | get_user_print_options (&opts); | |
0d381245 VP |
5998 | |
5999 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6000 | /* See comment in print_one_breakpoint concerning treatment of |
6001 | breakpoints with single disabled location. */ | |
0d381245 VP |
6002 | if (loc == NULL |
6003 | && (b->loc != NULL | |
6004 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6005 | header_of_multiple = 1; | |
6006 | if (loc == NULL) | |
6007 | loc = b->loc; | |
6008 | ||
c4093a6a JM |
6009 | annotate_record (); |
6010 | ||
6011 | /* 1 */ | |
6012 | annotate_field (0); | |
0d381245 | 6013 | if (part_of_multiple) |
528e1572 | 6014 | uiout->field_fmt ("number", "%d.%d", b->number, loc_number); |
0d381245 | 6015 | else |
381befee | 6016 | uiout->field_signed ("number", b->number); |
c4093a6a JM |
6017 | |
6018 | /* 2 */ | |
6019 | annotate_field (1); | |
0d381245 | 6020 | if (part_of_multiple) |
112e8700 | 6021 | uiout->field_skip ("type"); |
269b11a2 | 6022 | else |
112e8700 | 6023 | uiout->field_string ("type", bptype_string (b->type)); |
c4093a6a JM |
6024 | |
6025 | /* 3 */ | |
6026 | annotate_field (2); | |
0d381245 | 6027 | if (part_of_multiple) |
112e8700 | 6028 | uiout->field_skip ("disp"); |
0d381245 | 6029 | else |
112e8700 | 6030 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
0d381245 | 6031 | |
c4093a6a JM |
6032 | /* 4 */ |
6033 | annotate_field (3); | |
0d381245 | 6034 | if (part_of_multiple) |
112e8700 | 6035 | uiout->field_string ("enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6036 | else |
112e8700 | 6037 | uiout->field_fmt ("enabled", "%c", bpenables[(int) b->enable_state]); |
0d381245 | 6038 | |
c4093a6a | 6039 | /* 5 and 6 */ |
a38118e5 | 6040 | if (!raw_loc && b->ops != NULL && b->ops->print_one != NULL) |
b58a68fe | 6041 | b->ops->print_one (b, last_loc); |
3086aeae | 6042 | else |
a38118e5 PA |
6043 | { |
6044 | if (is_watchpoint (b)) | |
3a5c3e22 PA |
6045 | { |
6046 | struct watchpoint *w = (struct watchpoint *) b; | |
6047 | ||
6048 | /* Field 4, the address, is omitted (which makes the columns | |
6049 | not line up too nicely with the headers, but the effect | |
6050 | is relatively readable). */ | |
6051 | if (opts.addressprint) | |
112e8700 | 6052 | uiout->field_skip ("addr"); |
3a5c3e22 | 6053 | annotate_field (5); |
112e8700 | 6054 | uiout->field_string ("what", w->exp_string); |
3a5c3e22 | 6055 | } |
f06f1252 TT |
6056 | else if (!is_catchpoint (b) || is_exception_catchpoint (b) |
6057 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6058 | { |
6059 | if (opts.addressprint) | |
6060 | { | |
6061 | annotate_field (4); | |
6062 | if (header_of_multiple) | |
7f6aba03 TT |
6063 | uiout->field_string ("addr", "<MULTIPLE>", |
6064 | metadata_style.style ()); | |
a38118e5 | 6065 | else if (b->loc == NULL || loc->shlib_disabled) |
7f6aba03 TT |
6066 | uiout->field_string ("addr", "<PENDING>", |
6067 | metadata_style.style ()); | |
a38118e5 PA |
6068 | else |
6069 | uiout->field_core_addr ("addr", | |
6070 | loc->gdbarch, loc->address); | |
6071 | } | |
6072 | annotate_field (5); | |
6073 | if (!header_of_multiple) | |
6074 | print_breakpoint_location (b, loc); | |
6075 | if (b->loc) | |
6076 | *last_loc = b->loc; | |
6077 | } | |
6078 | } | |
6c95b8df | 6079 | |
998580f1 | 6080 | if (loc != NULL && !header_of_multiple) |
6c95b8df | 6081 | { |
5c632425 | 6082 | std::vector<int> inf_nums; |
998580f1 | 6083 | int mi_only = 1; |
6c95b8df | 6084 | |
08036331 | 6085 | for (inferior *inf : all_inferiors ()) |
6c95b8df PA |
6086 | { |
6087 | if (inf->pspace == loc->pspace) | |
5c632425 | 6088 | inf_nums.push_back (inf->num); |
6c95b8df | 6089 | } |
998580f1 MK |
6090 | |
6091 | /* For backward compatibility, don't display inferiors in CLI unless | |
6092 | there are several. Always display for MI. */ | |
6093 | if (allflag | |
6094 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6095 | && (number_of_program_spaces () > 1 | |
6096 | || number_of_inferiors () > 1) | |
6097 | /* LOC is for existing B, it cannot be in | |
6098 | moribund_locations and thus having NULL OWNER. */ | |
6099 | && loc->owner->type != bp_catchpoint)) | |
6100 | mi_only = 0; | |
5c632425 | 6101 | output_thread_groups (uiout, "thread-groups", inf_nums, mi_only); |
6c95b8df PA |
6102 | } |
6103 | ||
4a306c9a | 6104 | if (!part_of_multiple) |
c4093a6a | 6105 | { |
4a306c9a JB |
6106 | if (b->thread != -1) |
6107 | { | |
6108 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6109 | "stop only in" line a little further down. */ |
112e8700 | 6110 | uiout->text (" thread "); |
381befee | 6111 | uiout->field_signed ("thread", b->thread); |
4a306c9a JB |
6112 | } |
6113 | else if (b->task != 0) | |
6114 | { | |
112e8700 | 6115 | uiout->text (" task "); |
381befee | 6116 | uiout->field_signed ("task", b->task); |
4a306c9a | 6117 | } |
c4093a6a | 6118 | } |
f1310107 | 6119 | |
112e8700 | 6120 | uiout->text ("\n"); |
f1310107 | 6121 | |
348d480f | 6122 | if (!part_of_multiple) |
f1310107 TJB |
6123 | b->ops->print_one_detail (b, uiout); |
6124 | ||
0d381245 | 6125 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6126 | { |
6127 | annotate_field (6); | |
112e8700 | 6128 | uiout->text ("\tstop only in stack frame at "); |
e5dd4106 | 6129 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6130 | the frame ID. */ |
112e8700 | 6131 | uiout->field_core_addr ("frame", |
5af949e3 | 6132 | b->gdbarch, b->frame_id.stack_addr); |
112e8700 | 6133 | uiout->text ("\n"); |
c4093a6a JM |
6134 | } |
6135 | ||
28010a5d | 6136 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6137 | { |
6138 | annotate_field (7); | |
d77f58be | 6139 | if (is_tracepoint (b)) |
112e8700 | 6140 | uiout->text ("\ttrace only if "); |
1042e4c0 | 6141 | else |
112e8700 SM |
6142 | uiout->text ("\tstop only if "); |
6143 | uiout->field_string ("cond", b->cond_string); | |
b775012e LM |
6144 | |
6145 | /* Print whether the target is doing the breakpoint's condition | |
6146 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6147 | if (is_breakpoint (b) | |
6148 | && breakpoint_condition_evaluation_mode () | |
6149 | == condition_evaluation_target) | |
6150 | { | |
6a831f06 PA |
6151 | uiout->message (" (%pF evals)", |
6152 | string_field ("evaluated-by", | |
6153 | bp_condition_evaluator (b))); | |
b775012e | 6154 | } |
112e8700 | 6155 | uiout->text ("\n"); |
0101ce28 JJ |
6156 | } |
6157 | ||
0d381245 | 6158 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6159 | { |
4a64f543 | 6160 | /* FIXME should make an annotation for this. */ |
112e8700 SM |
6161 | uiout->text ("\tstop only in thread "); |
6162 | if (uiout->is_mi_like_p ()) | |
381befee | 6163 | uiout->field_signed ("thread", b->thread); |
5d5658a1 PA |
6164 | else |
6165 | { | |
6166 | struct thread_info *thr = find_thread_global_id (b->thread); | |
6167 | ||
112e8700 | 6168 | uiout->field_string ("thread", print_thread_id (thr)); |
5d5658a1 | 6169 | } |
112e8700 | 6170 | uiout->text ("\n"); |
c4093a6a JM |
6171 | } |
6172 | ||
556ec64d YQ |
6173 | if (!part_of_multiple) |
6174 | { | |
6175 | if (b->hit_count) | |
31f56a27 YQ |
6176 | { |
6177 | /* FIXME should make an annotation for this. */ | |
6178 | if (is_catchpoint (b)) | |
112e8700 | 6179 | uiout->text ("\tcatchpoint"); |
31f56a27 | 6180 | else if (is_tracepoint (b)) |
112e8700 | 6181 | uiout->text ("\ttracepoint"); |
31f56a27 | 6182 | else |
112e8700 SM |
6183 | uiout->text ("\tbreakpoint"); |
6184 | uiout->text (" already hit "); | |
381befee | 6185 | uiout->field_signed ("times", b->hit_count); |
31f56a27 | 6186 | if (b->hit_count == 1) |
112e8700 | 6187 | uiout->text (" time\n"); |
31f56a27 | 6188 | else |
112e8700 | 6189 | uiout->text (" times\n"); |
31f56a27 | 6190 | } |
556ec64d YQ |
6191 | else |
6192 | { | |
31f56a27 | 6193 | /* Output the count also if it is zero, but only if this is mi. */ |
112e8700 | 6194 | if (uiout->is_mi_like_p ()) |
381befee | 6195 | uiout->field_signed ("times", b->hit_count); |
556ec64d YQ |
6196 | } |
6197 | } | |
8b93c638 | 6198 | |
0d381245 | 6199 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6200 | { |
6201 | annotate_field (8); | |
6a831f06 PA |
6202 | uiout->message ("\tignore next %pF hits\n", |
6203 | signed_field ("ignore", b->ignore_count)); | |
c4093a6a | 6204 | } |
059fb39f | 6205 | |
816338b5 SS |
6206 | /* Note that an enable count of 1 corresponds to "enable once" |
6207 | behavior, which is reported by the combination of enablement and | |
6208 | disposition, so we don't need to mention it here. */ | |
6209 | if (!part_of_multiple && b->enable_count > 1) | |
6210 | { | |
6211 | annotate_field (8); | |
112e8700 | 6212 | uiout->text ("\tdisable after "); |
816338b5 SS |
6213 | /* Tweak the wording to clarify that ignore and enable counts |
6214 | are distinct, and have additive effect. */ | |
6215 | if (b->ignore_count) | |
112e8700 | 6216 | uiout->text ("additional "); |
816338b5 | 6217 | else |
112e8700 | 6218 | uiout->text ("next "); |
381befee | 6219 | uiout->field_signed ("enable", b->enable_count); |
112e8700 | 6220 | uiout->text (" hits\n"); |
816338b5 SS |
6221 | } |
6222 | ||
f196051f SS |
6223 | if (!part_of_multiple && is_tracepoint (b)) |
6224 | { | |
6225 | struct tracepoint *tp = (struct tracepoint *) b; | |
6226 | ||
6227 | if (tp->traceframe_usage) | |
6228 | { | |
112e8700 | 6229 | uiout->text ("\ttrace buffer usage "); |
381befee | 6230 | uiout->field_signed ("traceframe-usage", tp->traceframe_usage); |
112e8700 | 6231 | uiout->text (" bytes\n"); |
f196051f SS |
6232 | } |
6233 | } | |
d3ce09f5 | 6234 | |
d1b0a7bf | 6235 | l = b->commands ? b->commands.get () : NULL; |
059fb39f | 6236 | if (!part_of_multiple && l) |
c4093a6a JM |
6237 | { |
6238 | annotate_field (9); | |
2e783024 | 6239 | ui_out_emit_tuple tuple_emitter (uiout, "script"); |
8b93c638 | 6240 | print_command_lines (uiout, l, 4); |
c4093a6a | 6241 | } |
d24317b4 | 6242 | |
d9b3f62e | 6243 | if (is_tracepoint (b)) |
1042e4c0 | 6244 | { |
d9b3f62e PA |
6245 | struct tracepoint *t = (struct tracepoint *) b; |
6246 | ||
6247 | if (!part_of_multiple && t->pass_count) | |
6248 | { | |
6249 | annotate_field (10); | |
112e8700 | 6250 | uiout->text ("\tpass count "); |
381befee | 6251 | uiout->field_signed ("pass", t->pass_count); |
112e8700 | 6252 | uiout->text (" \n"); |
d9b3f62e | 6253 | } |
f2a8bc8a YQ |
6254 | |
6255 | /* Don't display it when tracepoint or tracepoint location is | |
6256 | pending. */ | |
6257 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6258 | { | |
6259 | annotate_field (11); | |
6260 | ||
112e8700 SM |
6261 | if (uiout->is_mi_like_p ()) |
6262 | uiout->field_string ("installed", | |
f2a8bc8a YQ |
6263 | loc->inserted ? "y" : "n"); |
6264 | else | |
6265 | { | |
6266 | if (loc->inserted) | |
112e8700 | 6267 | uiout->text ("\t"); |
f2a8bc8a | 6268 | else |
112e8700 SM |
6269 | uiout->text ("\tnot "); |
6270 | uiout->text ("installed on target\n"); | |
f2a8bc8a YQ |
6271 | } |
6272 | } | |
1042e4c0 SS |
6273 | } |
6274 | ||
112e8700 | 6275 | if (uiout->is_mi_like_p () && !part_of_multiple) |
d24317b4 | 6276 | { |
3a5c3e22 PA |
6277 | if (is_watchpoint (b)) |
6278 | { | |
6279 | struct watchpoint *w = (struct watchpoint *) b; | |
6280 | ||
112e8700 | 6281 | uiout->field_string ("original-location", w->exp_string); |
3a5c3e22 | 6282 | } |
f00aae0f | 6283 | else if (b->location != NULL |
d28cd78a | 6284 | && event_location_to_string (b->location.get ()) != NULL) |
112e8700 | 6285 | uiout->field_string ("original-location", |
d28cd78a | 6286 | event_location_to_string (b->location.get ())); |
d24317b4 | 6287 | } |
c4093a6a | 6288 | } |
c5aa993b | 6289 | |
13674803 SM |
6290 | /* See breakpoint.h. */ |
6291 | ||
6292 | bool fix_multi_location_breakpoint_output_globally = false; | |
6293 | ||
0d381245 VP |
6294 | static void |
6295 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6296 | struct bp_location **last_loc, |
6c95b8df | 6297 | int allflag) |
0d381245 | 6298 | { |
79a45e25 | 6299 | struct ui_out *uiout = current_uiout; |
13674803 SM |
6300 | bool use_fixed_output |
6301 | = (uiout->test_flags (fix_multi_location_breakpoint_output) | |
6302 | || fix_multi_location_breakpoint_output_globally); | |
8d3788bd | 6303 | |
b4be1b06 | 6304 | gdb::optional<ui_out_emit_tuple> bkpt_tuple_emitter (gdb::in_place, uiout, "bkpt"); |
a38118e5 | 6305 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag, false); |
8d3788bd | 6306 | |
b4be1b06 SM |
6307 | /* The mi2 broken format: the main breakpoint tuple ends here, the locations |
6308 | are outside. */ | |
6309 | if (!use_fixed_output) | |
6310 | bkpt_tuple_emitter.reset (); | |
0d381245 VP |
6311 | |
6312 | /* If this breakpoint has custom print function, | |
6313 | it's already printed. Otherwise, print individual | |
6314 | locations, if any. */ | |
a38118e5 PA |
6315 | if (b->ops == NULL |
6316 | || b->ops->print_one == NULL | |
6317 | || allflag) | |
0d381245 | 6318 | { |
4a64f543 MS |
6319 | /* If breakpoint has a single location that is disabled, we |
6320 | print it as if it had several locations, since otherwise it's | |
6321 | hard to represent "breakpoint enabled, location disabled" | |
6322 | situation. | |
6323 | ||
6324 | Note that while hardware watchpoints have several locations | |
a38118e5 PA |
6325 | internally, that's not a property exposed to users. |
6326 | ||
6327 | Likewise, while catchpoints may be implemented with | |
6328 | breakpoints (e.g., catch throw), that's not a property | |
6329 | exposed to users. We do however display the internal | |
6330 | breakpoint locations with "maint info breakpoints". */ | |
6331 | if (!is_hardware_watchpoint (b) | |
f06f1252 TT |
6332 | && (!is_catchpoint (b) || is_exception_catchpoint (b) |
6333 | || is_ada_exception_catchpoint (b)) | |
a38118e5 PA |
6334 | && (allflag |
6335 | || (b->loc && (b->loc->next || !b->loc->enabled)))) | |
0d381245 | 6336 | { |
b4be1b06 SM |
6337 | gdb::optional<ui_out_emit_list> locations_list; |
6338 | ||
6339 | /* For MI version <= 2, keep the behavior where GDB outputs an invalid | |
6340 | MI record. For later versions, place breakpoint locations in a | |
6341 | list. */ | |
6342 | if (uiout->is_mi_like_p () && use_fixed_output) | |
6343 | locations_list.emplace (uiout, "locations"); | |
8d3788bd | 6344 | |
b4be1b06 SM |
6345 | int n = 1; |
6346 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next, ++n) | |
8d3788bd | 6347 | { |
b4be1b06 | 6348 | ui_out_emit_tuple loc_tuple_emitter (uiout, NULL); |
a38118e5 PA |
6349 | print_one_breakpoint_location (b, loc, n, last_loc, |
6350 | allflag, allflag); | |
8d3788bd | 6351 | } |
0d381245 VP |
6352 | } |
6353 | } | |
6354 | } | |
6355 | ||
a6d9a66e UW |
6356 | static int |
6357 | breakpoint_address_bits (struct breakpoint *b) | |
6358 | { | |
6359 | int print_address_bits = 0; | |
6360 | struct bp_location *loc; | |
6361 | ||
c6d81124 PA |
6362 | /* Software watchpoints that aren't watching memory don't have an |
6363 | address to print. */ | |
6364 | if (is_no_memory_software_watchpoint (b)) | |
6365 | return 0; | |
6366 | ||
a6d9a66e UW |
6367 | for (loc = b->loc; loc; loc = loc->next) |
6368 | { | |
c7437ca6 PA |
6369 | int addr_bit; |
6370 | ||
c7437ca6 | 6371 | addr_bit = gdbarch_addr_bit (loc->gdbarch); |
a6d9a66e UW |
6372 | if (addr_bit > print_address_bits) |
6373 | print_address_bits = addr_bit; | |
6374 | } | |
6375 | ||
6376 | return print_address_bits; | |
6377 | } | |
0d381245 | 6378 | |
65630365 | 6379 | /* See breakpoint.h. */ |
c5aa993b | 6380 | |
65630365 PA |
6381 | void |
6382 | print_breakpoint (breakpoint *b) | |
c4093a6a | 6383 | { |
a6d9a66e | 6384 | struct bp_location *dummy_loc = NULL; |
65630365 | 6385 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6386 | } |
c5aa993b | 6387 | |
09d682a4 TT |
6388 | /* Return true if this breakpoint was set by the user, false if it is |
6389 | internal or momentary. */ | |
6390 | ||
6391 | int | |
6392 | user_breakpoint_p (struct breakpoint *b) | |
6393 | { | |
46c6471b | 6394 | return b->number > 0; |
09d682a4 TT |
6395 | } |
6396 | ||
93daf339 TT |
6397 | /* See breakpoint.h. */ |
6398 | ||
6399 | int | |
6400 | pending_breakpoint_p (struct breakpoint *b) | |
6401 | { | |
6402 | return b->loc == NULL; | |
6403 | } | |
6404 | ||
5c458ae8 SM |
6405 | /* Print information on breakpoints (including watchpoints and tracepoints). |
6406 | ||
6407 | If non-NULL, BP_NUM_LIST is a list of numbers and number ranges as | |
6408 | understood by number_or_range_parser. Only breakpoints included in this | |
6409 | list are then printed. | |
6410 | ||
6411 | If SHOW_INTERNAL is true, print internal breakpoints. | |
6412 | ||
6413 | If FILTER is non-NULL, call it on each breakpoint and only include the | |
6414 | ones for which it returns true. | |
6415 | ||
6416 | Return the total number of breakpoints listed. */ | |
c906108c | 6417 | |
d77f58be | 6418 | static int |
5c458ae8 | 6419 | breakpoint_1 (const char *bp_num_list, bool show_internal, |
f2478a7e | 6420 | bool (*filter) (const struct breakpoint *)) |
c4093a6a | 6421 | { |
52f0bd74 | 6422 | struct breakpoint *b; |
a6d9a66e | 6423 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6424 | int nr_printable_breakpoints; |
79a45b7d | 6425 | struct value_print_options opts; |
a6d9a66e | 6426 | int print_address_bits = 0; |
269b11a2 | 6427 | int print_type_col_width = 14; |
79a45e25 | 6428 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6429 | |
79a45b7d TT |
6430 | get_user_print_options (&opts); |
6431 | ||
4a64f543 MS |
6432 | /* Compute the number of rows in the table, as well as the size |
6433 | required for address fields. */ | |
7f3b0473 AC |
6434 | nr_printable_breakpoints = 0; |
6435 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6436 | { |
6437 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6438 | if (filter && !filter (b)) | |
6439 | continue; | |
6440 | ||
5c458ae8 | 6441 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
e5a67952 | 6442 | accept. Skip the others. */ |
5c458ae8 | 6443 | if (bp_num_list != NULL && *bp_num_list != '\0') |
e5a67952 | 6444 | { |
5c458ae8 | 6445 | if (show_internal && parse_and_eval_long (bp_num_list) != b->number) |
e5a67952 | 6446 | continue; |
5c458ae8 | 6447 | if (!show_internal && !number_is_in_list (bp_num_list, b->number)) |
e5a67952 MS |
6448 | continue; |
6449 | } | |
269b11a2 | 6450 | |
5c458ae8 | 6451 | if (show_internal || user_breakpoint_p (b)) |
e5a67952 MS |
6452 | { |
6453 | int addr_bit, type_len; | |
a6d9a66e | 6454 | |
e5a67952 MS |
6455 | addr_bit = breakpoint_address_bits (b); |
6456 | if (addr_bit > print_address_bits) | |
6457 | print_address_bits = addr_bit; | |
269b11a2 | 6458 | |
e5a67952 MS |
6459 | type_len = strlen (bptype_string (b->type)); |
6460 | if (type_len > print_type_col_width) | |
6461 | print_type_col_width = type_len; | |
6462 | ||
6463 | nr_printable_breakpoints++; | |
6464 | } | |
6465 | } | |
7f3b0473 | 6466 | |
4a2b031d TT |
6467 | { |
6468 | ui_out_emit_table table_emitter (uiout, | |
6469 | opts.addressprint ? 6 : 5, | |
6470 | nr_printable_breakpoints, | |
6471 | "BreakpointTable"); | |
6472 | ||
6473 | if (nr_printable_breakpoints > 0) | |
6474 | annotate_breakpoints_headers (); | |
6475 | if (nr_printable_breakpoints > 0) | |
6476 | annotate_field (0); | |
6477 | uiout->table_header (7, ui_left, "number", "Num"); /* 1 */ | |
6478 | if (nr_printable_breakpoints > 0) | |
6479 | annotate_field (1); | |
6480 | uiout->table_header (print_type_col_width, ui_left, "type", "Type"); /* 2 */ | |
6481 | if (nr_printable_breakpoints > 0) | |
6482 | annotate_field (2); | |
6483 | uiout->table_header (4, ui_left, "disp", "Disp"); /* 3 */ | |
6484 | if (nr_printable_breakpoints > 0) | |
6485 | annotate_field (3); | |
6486 | uiout->table_header (3, ui_left, "enabled", "Enb"); /* 4 */ | |
6487 | if (opts.addressprint) | |
6488 | { | |
6489 | if (nr_printable_breakpoints > 0) | |
6490 | annotate_field (4); | |
6491 | if (print_address_bits <= 32) | |
6492 | uiout->table_header (10, ui_left, "addr", "Address"); /* 5 */ | |
6493 | else | |
6494 | uiout->table_header (18, ui_left, "addr", "Address"); /* 5 */ | |
6495 | } | |
6496 | if (nr_printable_breakpoints > 0) | |
6497 | annotate_field (5); | |
6498 | uiout->table_header (40, ui_noalign, "what", "What"); /* 6 */ | |
6499 | uiout->table_body (); | |
6500 | if (nr_printable_breakpoints > 0) | |
6501 | annotate_breakpoints_table (); | |
6502 | ||
6503 | ALL_BREAKPOINTS (b) | |
6504 | { | |
6505 | QUIT; | |
6506 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6507 | if (filter && !filter (b)) | |
6508 | continue; | |
e5a67952 | 6509 | |
5c458ae8 | 6510 | /* If we have a BP_NUM_LIST string, it is a list of breakpoints to |
4a2b031d | 6511 | accept. Skip the others. */ |
e5a67952 | 6512 | |
5c458ae8 | 6513 | if (bp_num_list != NULL && *bp_num_list != '\0') |
4a2b031d | 6514 | { |
5c458ae8 | 6515 | if (show_internal) /* maintenance info breakpoint */ |
4a2b031d | 6516 | { |
5c458ae8 | 6517 | if (parse_and_eval_long (bp_num_list) != b->number) |
4a2b031d TT |
6518 | continue; |
6519 | } | |
6520 | else /* all others */ | |
6521 | { | |
5c458ae8 | 6522 | if (!number_is_in_list (bp_num_list, b->number)) |
4a2b031d TT |
6523 | continue; |
6524 | } | |
6525 | } | |
6526 | /* We only print out user settable breakpoints unless the | |
5c458ae8 SM |
6527 | show_internal is set. */ |
6528 | if (show_internal || user_breakpoint_p (b)) | |
6529 | print_one_breakpoint (b, &last_loc, show_internal); | |
4a2b031d TT |
6530 | } |
6531 | } | |
698384cd | 6532 | |
7f3b0473 | 6533 | if (nr_printable_breakpoints == 0) |
c906108c | 6534 | { |
4a64f543 MS |
6535 | /* If there's a filter, let the caller decide how to report |
6536 | empty list. */ | |
d77f58be SS |
6537 | if (!filter) |
6538 | { | |
5c458ae8 | 6539 | if (bp_num_list == NULL || *bp_num_list == '\0') |
112e8700 | 6540 | uiout->message ("No breakpoints or watchpoints.\n"); |
d77f58be | 6541 | else |
112e8700 | 6542 | uiout->message ("No breakpoint or watchpoint matching '%s'.\n", |
5c458ae8 | 6543 | bp_num_list); |
d77f58be | 6544 | } |
c906108c SS |
6545 | } |
6546 | else | |
c4093a6a | 6547 | { |
a6d9a66e UW |
6548 | if (last_loc && !server_command) |
6549 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6550 | } |
c906108c | 6551 | |
4a64f543 | 6552 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6553 | there have been breakpoints? */ |
c906108c | 6554 | annotate_breakpoints_table_end (); |
d77f58be SS |
6555 | |
6556 | return nr_printable_breakpoints; | |
c906108c SS |
6557 | } |
6558 | ||
ad443146 SS |
6559 | /* Display the value of default-collect in a way that is generally |
6560 | compatible with the breakpoint list. */ | |
6561 | ||
6562 | static void | |
6563 | default_collect_info (void) | |
6564 | { | |
79a45e25 PA |
6565 | struct ui_out *uiout = current_uiout; |
6566 | ||
ad443146 SS |
6567 | /* If it has no value (which is frequently the case), say nothing; a |
6568 | message like "No default-collect." gets in user's face when it's | |
6569 | not wanted. */ | |
6570 | if (!*default_collect) | |
6571 | return; | |
6572 | ||
6573 | /* The following phrase lines up nicely with per-tracepoint collect | |
6574 | actions. */ | |
112e8700 SM |
6575 | uiout->text ("default collect "); |
6576 | uiout->field_string ("default-collect", default_collect); | |
6577 | uiout->text (" \n"); | |
ad443146 SS |
6578 | } |
6579 | ||
c906108c | 6580 | static void |
0b39b52e | 6581 | info_breakpoints_command (const char *args, int from_tty) |
c906108c | 6582 | { |
5c458ae8 | 6583 | breakpoint_1 (args, false, NULL); |
ad443146 SS |
6584 | |
6585 | default_collect_info (); | |
d77f58be SS |
6586 | } |
6587 | ||
6588 | static void | |
1d12d88f | 6589 | info_watchpoints_command (const char *args, int from_tty) |
d77f58be | 6590 | { |
5c458ae8 | 6591 | int num_printed = breakpoint_1 (args, false, is_watchpoint); |
79a45e25 | 6592 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6593 | |
6594 | if (num_printed == 0) | |
6595 | { | |
e5a67952 | 6596 | if (args == NULL || *args == '\0') |
112e8700 | 6597 | uiout->message ("No watchpoints.\n"); |
d77f58be | 6598 | else |
112e8700 | 6599 | uiout->message ("No watchpoint matching '%s'.\n", args); |
d77f58be | 6600 | } |
c906108c SS |
6601 | } |
6602 | ||
7a292a7a | 6603 | static void |
4495129a | 6604 | maintenance_info_breakpoints (const char *args, int from_tty) |
c906108c | 6605 | { |
5c458ae8 | 6606 | breakpoint_1 (args, true, NULL); |
ad443146 SS |
6607 | |
6608 | default_collect_info (); | |
c906108c SS |
6609 | } |
6610 | ||
0d381245 | 6611 | static int |
714835d5 | 6612 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6613 | struct program_space *pspace, |
714835d5 | 6614 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6615 | { |
6616 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6617 | |
0d381245 VP |
6618 | for (; bl; bl = bl->next) |
6619 | { | |
6c95b8df PA |
6620 | if (bl->pspace == pspace |
6621 | && bl->address == pc | |
0d381245 VP |
6622 | && (!overlay_debugging || bl->section == section)) |
6623 | return 1; | |
6624 | } | |
6625 | return 0; | |
6626 | } | |
6627 | ||
672f9b60 | 6628 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6629 | concerns with logical breakpoints, so we match program spaces, not |
6630 | address spaces. */ | |
c906108c SS |
6631 | |
6632 | static void | |
6c95b8df PA |
6633 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6634 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6635 | struct obj_section *section, int thread) |
c906108c | 6636 | { |
52f0bd74 AC |
6637 | int others = 0; |
6638 | struct breakpoint *b; | |
c906108c SS |
6639 | |
6640 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6641 | others += (user_breakpoint_p (b) |
6642 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6643 | if (others > 0) |
6644 | { | |
a3f17187 AC |
6645 | if (others == 1) |
6646 | printf_filtered (_("Note: breakpoint ")); | |
6647 | else /* if (others == ???) */ | |
6648 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6649 | ALL_BREAKPOINTS (b) |
672f9b60 | 6650 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6651 | { |
6652 | others--; | |
6653 | printf_filtered ("%d", b->number); | |
6654 | if (b->thread == -1 && thread != -1) | |
6655 | printf_filtered (" (all threads)"); | |
6656 | else if (b->thread != -1) | |
6657 | printf_filtered (" (thread %d)", b->thread); | |
6658 | printf_filtered ("%s%s ", | |
059fb39f | 6659 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6660 | || b->enable_state == bp_call_disabled) |
0d381245 | 6661 | ? " (disabled)" |
0d381245 VP |
6662 | : ""), |
6663 | (others > 1) ? "," | |
6664 | : ((others == 1) ? " and" : "")); | |
6665 | } | |
6a831f06 PA |
6666 | current_uiout->message (_("also set at pc %ps.\n"), |
6667 | styled_string (address_style.style (), | |
6668 | paddress (gdbarch, pc))); | |
c906108c SS |
6669 | } |
6670 | } | |
6671 | \f | |
c906108c | 6672 | |
cb1e4e32 PA |
6673 | /* Return true iff it is meaningful to use the address member of LOC. |
6674 | For some breakpoint types, the locations' address members are | |
6675 | irrelevant and it makes no sense to attempt to compare them to | |
6676 | other addresses (or use them for any other purpose either). | |
2d134ed3 | 6677 | |
cb1e4e32 PA |
6678 | More specifically, software watchpoints and catchpoints that are |
6679 | not backed by breakpoints always have a zero valued location | |
6680 | address and we don't want to mark breakpoints of any of these types | |
6681 | to be a duplicate of an actual breakpoint location at address | |
6682 | zero. */ | |
e4f237da | 6683 | |
cb1e4e32 PA |
6684 | static bool |
6685 | bl_address_is_meaningful (bp_location *loc) | |
e4f237da | 6686 | { |
cb1e4e32 | 6687 | return loc->loc_type != bp_loc_other; |
2d134ed3 PA |
6688 | } |
6689 | ||
6690 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6691 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6692 | ||
6693 | static int | |
4a64f543 MS |
6694 | watchpoint_locations_match (struct bp_location *loc1, |
6695 | struct bp_location *loc2) | |
2d134ed3 | 6696 | { |
3a5c3e22 PA |
6697 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6698 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6699 | ||
6700 | /* Both of them must exist. */ | |
6701 | gdb_assert (w1 != NULL); | |
6702 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6703 | |
4a64f543 MS |
6704 | /* If the target can evaluate the condition expression in hardware, |
6705 | then we we need to insert both watchpoints even if they are at | |
6706 | the same place. Otherwise the watchpoint will only trigger when | |
6707 | the condition of whichever watchpoint was inserted evaluates to | |
6708 | true, not giving a chance for GDB to check the condition of the | |
6709 | other watchpoint. */ | |
3a5c3e22 | 6710 | if ((w1->cond_exp |
4a64f543 MS |
6711 | && target_can_accel_watchpoint_condition (loc1->address, |
6712 | loc1->length, | |
0cf6dd15 | 6713 | loc1->watchpoint_type, |
4d01a485 | 6714 | w1->cond_exp.get ())) |
3a5c3e22 | 6715 | || (w2->cond_exp |
4a64f543 MS |
6716 | && target_can_accel_watchpoint_condition (loc2->address, |
6717 | loc2->length, | |
0cf6dd15 | 6718 | loc2->watchpoint_type, |
4d01a485 | 6719 | w2->cond_exp.get ()))) |
0cf6dd15 TJB |
6720 | return 0; |
6721 | ||
85d721b8 PA |
6722 | /* Note that this checks the owner's type, not the location's. In |
6723 | case the target does not support read watchpoints, but does | |
6724 | support access watchpoints, we'll have bp_read_watchpoint | |
6725 | watchpoints with hw_access locations. Those should be considered | |
6726 | duplicates of hw_read locations. The hw_read locations will | |
6727 | become hw_access locations later. */ | |
2d134ed3 PA |
6728 | return (loc1->owner->type == loc2->owner->type |
6729 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6730 | && loc1->address == loc2->address | |
6731 | && loc1->length == loc2->length); | |
e4f237da KB |
6732 | } |
6733 | ||
31e77af2 | 6734 | /* See breakpoint.h. */ |
6c95b8df | 6735 | |
31e77af2 | 6736 | int |
accd0bcd YQ |
6737 | breakpoint_address_match (const address_space *aspace1, CORE_ADDR addr1, |
6738 | const address_space *aspace2, CORE_ADDR addr2) | |
6c95b8df | 6739 | { |
f5656ead | 6740 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6741 | || aspace1 == aspace2) |
6742 | && addr1 == addr2); | |
6743 | } | |
6744 | ||
f1310107 TJB |
6745 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6746 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6747 | matches ASPACE2. On targets that have global breakpoints, the address | |
6748 | space doesn't really matter. */ | |
6749 | ||
6750 | static int | |
accd0bcd YQ |
6751 | breakpoint_address_match_range (const address_space *aspace1, |
6752 | CORE_ADDR addr1, | |
6753 | int len1, const address_space *aspace2, | |
f1310107 TJB |
6754 | CORE_ADDR addr2) |
6755 | { | |
f5656ead | 6756 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6757 | || aspace1 == aspace2) |
6758 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6759 | } | |
6760 | ||
6761 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6762 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6763 | matches the breakpoint's address space. On targets that have global | |
6764 | breakpoints, the address space doesn't really matter. */ | |
6765 | ||
6766 | static int | |
6767 | breakpoint_location_address_match (struct bp_location *bl, | |
accd0bcd | 6768 | const address_space *aspace, |
f1310107 TJB |
6769 | CORE_ADDR addr) |
6770 | { | |
6771 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6772 | aspace, addr) | |
6773 | || (bl->length | |
6774 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6775 | bl->address, bl->length, | |
6776 | aspace, addr))); | |
6777 | } | |
6778 | ||
d35ae833 PA |
6779 | /* Returns true if the [ADDR,ADDR+LEN) range in ASPACE overlaps |
6780 | breakpoint BL. BL may be a ranged breakpoint. In most targets, a | |
6781 | match happens only if ASPACE matches the breakpoint's address | |
6782 | space. On targets that have global breakpoints, the address space | |
6783 | doesn't really matter. */ | |
6784 | ||
6785 | static int | |
6786 | breakpoint_location_address_range_overlap (struct bp_location *bl, | |
accd0bcd | 6787 | const address_space *aspace, |
d35ae833 PA |
6788 | CORE_ADDR addr, int len) |
6789 | { | |
6790 | if (gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6791 | || bl->pspace->aspace == aspace) | |
6792 | { | |
6793 | int bl_len = bl->length != 0 ? bl->length : 1; | |
6794 | ||
6795 | if (mem_ranges_overlap (addr, len, bl->address, bl_len)) | |
6796 | return 1; | |
6797 | } | |
6798 | return 0; | |
6799 | } | |
6800 | ||
1e4d1764 YQ |
6801 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6802 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6803 | true, otherwise returns false. */ | |
6804 | ||
6805 | static int | |
6806 | tracepoint_locations_match (struct bp_location *loc1, | |
6807 | struct bp_location *loc2) | |
6808 | { | |
6809 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6810 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6811 | locations at the same address of different tracepoints are regarded as | |
6812 | different locations. */ | |
6813 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6814 | else | |
6815 | return 0; | |
6816 | } | |
6817 | ||
2d134ed3 | 6818 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
cb1e4e32 PA |
6819 | (bl_address_is_meaningful), returns true if LOC1 and LOC2 represent |
6820 | the same location. */ | |
2d134ed3 PA |
6821 | |
6822 | static int | |
4a64f543 MS |
6823 | breakpoint_locations_match (struct bp_location *loc1, |
6824 | struct bp_location *loc2) | |
2d134ed3 | 6825 | { |
2bdf28a0 JK |
6826 | int hw_point1, hw_point2; |
6827 | ||
6828 | /* Both of them must not be in moribund_locations. */ | |
6829 | gdb_assert (loc1->owner != NULL); | |
6830 | gdb_assert (loc2->owner != NULL); | |
6831 | ||
6832 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6833 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6834 | |
6835 | if (hw_point1 != hw_point2) | |
6836 | return 0; | |
6837 | else if (hw_point1) | |
6838 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6839 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6840 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6841 | else |
f1310107 TJB |
6842 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6843 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6844 | loc2->pspace->aspace, loc2->address) | |
6845 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6846 | } |
6847 | ||
76897487 KB |
6848 | static void |
6849 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6850 | int bnum, int have_bnum) | |
6851 | { | |
f63fbe86 MS |
6852 | /* The longest string possibly returned by hex_string_custom |
6853 | is 50 chars. These must be at least that big for safety. */ | |
6854 | char astr1[64]; | |
6855 | char astr2[64]; | |
76897487 | 6856 | |
bb599908 PH |
6857 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6858 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6859 | if (have_bnum) |
8a3fe4f8 | 6860 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6861 | bnum, astr1, astr2); |
6862 | else | |
8a3fe4f8 | 6863 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6864 | } |
6865 | ||
4a64f543 MS |
6866 | /* Adjust a breakpoint's address to account for architectural |
6867 | constraints on breakpoint placement. Return the adjusted address. | |
6868 | Note: Very few targets require this kind of adjustment. For most | |
6869 | targets, this function is simply the identity function. */ | |
76897487 KB |
6870 | |
6871 | static CORE_ADDR | |
a6d9a66e UW |
6872 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6873 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6874 | { |
a0de8c21 YQ |
6875 | if (bptype == bp_watchpoint |
6876 | || bptype == bp_hardware_watchpoint | |
6877 | || bptype == bp_read_watchpoint | |
6878 | || bptype == bp_access_watchpoint | |
6879 | || bptype == bp_catchpoint) | |
88f7da05 KB |
6880 | { |
6881 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6882 | have their addresses modified. */ | |
6883 | return bpaddr; | |
6884 | } | |
7c16b83e PA |
6885 | else if (bptype == bp_single_step) |
6886 | { | |
6887 | /* Single-step breakpoints should not have their addresses | |
6888 | modified. If there's any architectural constrain that | |
6889 | applies to this address, then it should have already been | |
6890 | taken into account when the breakpoint was created in the | |
6891 | first place. If we didn't do this, stepping through e.g., | |
6892 | Thumb-2 IT blocks would break. */ | |
6893 | return bpaddr; | |
6894 | } | |
76897487 KB |
6895 | else |
6896 | { | |
a0de8c21 YQ |
6897 | CORE_ADDR adjusted_bpaddr = bpaddr; |
6898 | ||
6899 | if (gdbarch_adjust_breakpoint_address_p (gdbarch)) | |
6900 | { | |
6901 | /* Some targets have architectural constraints on the placement | |
6902 | of breakpoint instructions. Obtain the adjusted address. */ | |
6903 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); | |
6904 | } | |
76897487 | 6905 | |
a0de8c21 | 6906 | adjusted_bpaddr = address_significant (gdbarch, adjusted_bpaddr); |
76897487 KB |
6907 | |
6908 | /* An adjusted breakpoint address can significantly alter | |
6909 | a user's expectations. Print a warning if an adjustment | |
6910 | is required. */ | |
6911 | if (adjusted_bpaddr != bpaddr) | |
6912 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6913 | ||
6914 | return adjusted_bpaddr; | |
6915 | } | |
6916 | } | |
6917 | ||
cb1e4e32 PA |
6918 | static bp_loc_type |
6919 | bp_location_from_bp_type (bptype type) | |
7cc221ef | 6920 | { |
cb1e4e32 | 6921 | switch (type) |
e049a4b5 DJ |
6922 | { |
6923 | case bp_breakpoint: | |
7c16b83e | 6924 | case bp_single_step: |
e049a4b5 DJ |
6925 | case bp_until: |
6926 | case bp_finish: | |
6927 | case bp_longjmp: | |
6928 | case bp_longjmp_resume: | |
e2e4d78b | 6929 | case bp_longjmp_call_dummy: |
186c406b TT |
6930 | case bp_exception: |
6931 | case bp_exception_resume: | |
e049a4b5 | 6932 | case bp_step_resume: |
2c03e5be | 6933 | case bp_hp_step_resume: |
e049a4b5 DJ |
6934 | case bp_watchpoint_scope: |
6935 | case bp_call_dummy: | |
aa7d318d | 6936 | case bp_std_terminate: |
e049a4b5 DJ |
6937 | case bp_shlib_event: |
6938 | case bp_thread_event: | |
6939 | case bp_overlay_event: | |
4efc6507 | 6940 | case bp_jit_event: |
0fd8e87f | 6941 | case bp_longjmp_master: |
aa7d318d | 6942 | case bp_std_terminate_master: |
186c406b | 6943 | case bp_exception_master: |
0e30163f JK |
6944 | case bp_gnu_ifunc_resolver: |
6945 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6946 | case bp_dprintf: |
cb1e4e32 | 6947 | return bp_loc_software_breakpoint; |
e049a4b5 | 6948 | case bp_hardware_breakpoint: |
cb1e4e32 | 6949 | return bp_loc_hardware_breakpoint; |
e049a4b5 DJ |
6950 | case bp_hardware_watchpoint: |
6951 | case bp_read_watchpoint: | |
6952 | case bp_access_watchpoint: | |
cb1e4e32 | 6953 | return bp_loc_hardware_watchpoint; |
e049a4b5 | 6954 | case bp_watchpoint: |
ce78b96d | 6955 | case bp_catchpoint: |
15c3d785 PA |
6956 | case bp_tracepoint: |
6957 | case bp_fast_tracepoint: | |
0fb4aa4b | 6958 | case bp_static_tracepoint: |
cb1e4e32 | 6959 | return bp_loc_other; |
e049a4b5 | 6960 | default: |
e2e0b3e5 | 6961 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 | 6962 | } |
cb1e4e32 PA |
6963 | } |
6964 | ||
6965 | bp_location::bp_location (breakpoint *owner, bp_loc_type type) | |
6966 | { | |
6967 | this->owner = owner; | |
6968 | this->cond_bytecode = NULL; | |
6969 | this->shlib_disabled = 0; | |
6970 | this->enabled = 1; | |
6971 | ||
6972 | this->loc_type = type; | |
e049a4b5 | 6973 | |
cb1e4e32 PA |
6974 | if (this->loc_type == bp_loc_software_breakpoint |
6975 | || this->loc_type == bp_loc_hardware_breakpoint) | |
6976 | mark_breakpoint_location_modified (this); | |
6977 | ||
6978 | this->refc = 1; | |
6979 | } | |
6980 | ||
6981 | bp_location::bp_location (breakpoint *owner) | |
6982 | : bp_location::bp_location (owner, | |
6983 | bp_location_from_bp_type (owner->type)) | |
6984 | { | |
28010a5d PA |
6985 | } |
6986 | ||
6987 | /* Allocate a struct bp_location. */ | |
6988 | ||
6989 | static struct bp_location * | |
6990 | allocate_bp_location (struct breakpoint *bpt) | |
6991 | { | |
348d480f PA |
6992 | return bpt->ops->allocate_location (bpt); |
6993 | } | |
7cc221ef | 6994 | |
f431efe5 PA |
6995 | static void |
6996 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6997 | { |
4d01a485 | 6998 | delete loc; |
fe3f5fa8 VP |
6999 | } |
7000 | ||
f431efe5 PA |
7001 | /* Increment reference count. */ |
7002 | ||
7003 | static void | |
7004 | incref_bp_location (struct bp_location *bl) | |
7005 | { | |
7006 | ++bl->refc; | |
7007 | } | |
7008 | ||
7009 | /* Decrement reference count. If the reference count reaches 0, | |
7010 | destroy the bp_location. Sets *BLP to NULL. */ | |
7011 | ||
7012 | static void | |
7013 | decref_bp_location (struct bp_location **blp) | |
7014 | { | |
0807b50c PA |
7015 | gdb_assert ((*blp)->refc > 0); |
7016 | ||
f431efe5 PA |
7017 | if (--(*blp)->refc == 0) |
7018 | free_bp_location (*blp); | |
7019 | *blp = NULL; | |
7020 | } | |
7021 | ||
346774a9 | 7022 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7023 | |
b270e6f9 TT |
7024 | static breakpoint * |
7025 | add_to_breakpoint_chain (std::unique_ptr<breakpoint> &&b) | |
c906108c | 7026 | { |
346774a9 | 7027 | struct breakpoint *b1; |
b270e6f9 | 7028 | struct breakpoint *result = b.get (); |
c906108c | 7029 | |
346774a9 PA |
7030 | /* Add this breakpoint to the end of the chain so that a list of |
7031 | breakpoints will come out in order of increasing numbers. */ | |
7032 | ||
7033 | b1 = breakpoint_chain; | |
7034 | if (b1 == 0) | |
b270e6f9 | 7035 | breakpoint_chain = b.release (); |
346774a9 PA |
7036 | else |
7037 | { | |
7038 | while (b1->next) | |
7039 | b1 = b1->next; | |
b270e6f9 | 7040 | b1->next = b.release (); |
346774a9 | 7041 | } |
b270e6f9 TT |
7042 | |
7043 | return result; | |
346774a9 PA |
7044 | } |
7045 | ||
7046 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7047 | ||
7048 | static void | |
7049 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7050 | struct gdbarch *gdbarch, | |
28010a5d | 7051 | enum bptype bptype, |
c0a91b2b | 7052 | const struct breakpoint_ops *ops) |
346774a9 | 7053 | { |
348d480f PA |
7054 | gdb_assert (ops != NULL); |
7055 | ||
28010a5d | 7056 | b->ops = ops; |
4d28f7a8 | 7057 | b->type = bptype; |
a6d9a66e | 7058 | b->gdbarch = gdbarch; |
c906108c SS |
7059 | b->language = current_language->la_language; |
7060 | b->input_radix = input_radix; | |
d0fb5eae | 7061 | b->related_breakpoint = b; |
346774a9 PA |
7062 | } |
7063 | ||
7064 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7065 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7066 | |
7067 | static struct breakpoint * | |
7068 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7069 | enum bptype bptype, |
c0a91b2b | 7070 | const struct breakpoint_ops *ops) |
346774a9 | 7071 | { |
3b0871f4 | 7072 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7073 | |
3b0871f4 | 7074 | init_raw_breakpoint_without_location (b.get (), gdbarch, bptype, ops); |
b270e6f9 | 7075 | return add_to_breakpoint_chain (std::move (b)); |
0d381245 VP |
7076 | } |
7077 | ||
0ba852ab | 7078 | /* Initialize loc->function_name. */ |
0e30163f | 7079 | |
0d381245 | 7080 | static void |
0ba852ab | 7081 | set_breakpoint_location_function (struct bp_location *loc) |
0d381245 | 7082 | { |
2bdf28a0 JK |
7083 | gdb_assert (loc->owner != NULL); |
7084 | ||
0d381245 | 7085 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7086 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7087 | || is_tracepoint (loc->owner)) |
0d381245 | 7088 | { |
2c02bd72 | 7089 | const char *function_name; |
0e30163f | 7090 | |
3467ec66 | 7091 | if (loc->msymbol != NULL |
f50776aa | 7092 | && (MSYMBOL_TYPE (loc->msymbol) == mst_text_gnu_ifunc |
0ba852ab | 7093 | || MSYMBOL_TYPE (loc->msymbol) == mst_data_gnu_ifunc)) |
0e30163f JK |
7094 | { |
7095 | struct breakpoint *b = loc->owner; | |
7096 | ||
c9d95fa3 | 7097 | function_name = loc->msymbol->linkage_name (); |
3467ec66 PA |
7098 | |
7099 | if (b->type == bp_breakpoint && b->loc == loc | |
7100 | && loc->next == NULL && b->related_breakpoint == b) | |
0e30163f JK |
7101 | { |
7102 | /* Create only the whole new breakpoint of this type but do not | |
7103 | mess more complicated breakpoints with multiple locations. */ | |
7104 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7105 | /* Remember the resolver's address for use by the return |
7106 | breakpoint. */ | |
3467ec66 | 7107 | loc->related_address = loc->address; |
0e30163f JK |
7108 | } |
7109 | } | |
3467ec66 PA |
7110 | else |
7111 | find_pc_partial_function (loc->address, &function_name, NULL, NULL); | |
0e30163f | 7112 | |
2c02bd72 DE |
7113 | if (function_name) |
7114 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7115 | } |
7116 | } | |
7117 | ||
a6d9a66e | 7118 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7119 | struct gdbarch * |
a6d9a66e UW |
7120 | get_sal_arch (struct symtab_and_line sal) |
7121 | { | |
7122 | if (sal.section) | |
7123 | return get_objfile_arch (sal.section->objfile); | |
7124 | if (sal.symtab) | |
eb822aa6 | 7125 | return get_objfile_arch (SYMTAB_OBJFILE (sal.symtab)); |
a6d9a66e UW |
7126 | |
7127 | return NULL; | |
7128 | } | |
7129 | ||
346774a9 PA |
7130 | /* Low level routine for partially initializing a breakpoint of type |
7131 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7132 | file name, and line number are provided by SAL. |
0d381245 VP |
7133 | |
7134 | It is expected that the caller will complete the initialization of | |
7135 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7136 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7137 | |
346774a9 PA |
7138 | static void |
7139 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7140 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7141 | const struct breakpoint_ops *ops) |
0d381245 | 7142 | { |
28010a5d | 7143 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7144 | |
3742cc8b | 7145 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7146 | |
6c95b8df PA |
7147 | if (bptype != bp_catchpoint) |
7148 | gdb_assert (sal.pspace != NULL); | |
7149 | ||
f8eba3c6 TT |
7150 | /* Store the program space that was used to set the breakpoint, |
7151 | except for ordinary breakpoints, which are independent of the | |
7152 | program space. */ | |
7153 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7154 | b->pspace = sal.pspace; | |
346774a9 | 7155 | } |
c906108c | 7156 | |
346774a9 PA |
7157 | /* set_raw_breakpoint is a low level routine for allocating and |
7158 | partially initializing a breakpoint of type BPTYPE. The newly | |
7159 | created breakpoint's address, section, source file name, and line | |
7160 | number are provided by SAL. The newly created and partially | |
7161 | initialized breakpoint is added to the breakpoint chain and | |
7162 | is also returned as the value of this function. | |
7163 | ||
7164 | It is expected that the caller will complete the initialization of | |
7165 | the newly created breakpoint struct as well as output any status | |
7166 | information regarding the creation of a new breakpoint. In | |
7167 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7168 | number! Care should be taken to not allow an error to occur | |
7169 | prior to completing the initialization of the breakpoint. If this | |
7170 | should happen, a bogus breakpoint will be left on the chain. */ | |
7171 | ||
7172 | struct breakpoint * | |
7173 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7174 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7175 | const struct breakpoint_ops *ops) |
346774a9 | 7176 | { |
3b0871f4 | 7177 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (bptype); |
346774a9 | 7178 | |
3b0871f4 | 7179 | init_raw_breakpoint (b.get (), gdbarch, sal, bptype, ops); |
b270e6f9 | 7180 | return add_to_breakpoint_chain (std::move (b)); |
c906108c SS |
7181 | } |
7182 | ||
53a5351d | 7183 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7184 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7185 | initiated the operation. */ | |
c906108c SS |
7186 | |
7187 | void | |
186c406b | 7188 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7189 | { |
35df4500 | 7190 | struct breakpoint *b, *b_tmp; |
5d5658a1 | 7191 | int thread = tp->global_num; |
0fd8e87f UW |
7192 | |
7193 | /* To avoid having to rescan all objfile symbols at every step, | |
7194 | we maintain a list of continually-inserted but always disabled | |
7195 | longjmp "master" breakpoints. Here, we simply create momentary | |
7196 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7197 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7198 | if (b->pspace == current_program_space |
186c406b TT |
7199 | && (b->type == bp_longjmp_master |
7200 | || b->type == bp_exception_master)) | |
0fd8e87f | 7201 | { |
06edf0c0 PA |
7202 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7203 | struct breakpoint *clone; | |
cc59ec59 | 7204 | |
e2e4d78b JK |
7205 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7206 | after their removal. */ | |
06edf0c0 | 7207 | clone = momentary_breakpoint_from_master (b, type, |
c1fc2657 | 7208 | &momentary_breakpoint_ops, 1); |
0fd8e87f UW |
7209 | clone->thread = thread; |
7210 | } | |
186c406b TT |
7211 | |
7212 | tp->initiating_frame = frame; | |
c906108c SS |
7213 | } |
7214 | ||
611c83ae | 7215 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7216 | void |
611c83ae | 7217 | delete_longjmp_breakpoint (int thread) |
c906108c | 7218 | { |
35df4500 | 7219 | struct breakpoint *b, *b_tmp; |
c906108c | 7220 | |
35df4500 | 7221 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7222 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7223 | { |
7224 | if (b->thread == thread) | |
7225 | delete_breakpoint (b); | |
7226 | } | |
c906108c SS |
7227 | } |
7228 | ||
f59f708a PA |
7229 | void |
7230 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7231 | { | |
7232 | struct breakpoint *b, *b_tmp; | |
7233 | ||
7234 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7235 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7236 | { | |
7237 | if (b->thread == thread) | |
7238 | b->disposition = disp_del_at_next_stop; | |
7239 | } | |
7240 | } | |
7241 | ||
e2e4d78b JK |
7242 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7243 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7244 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7245 | breakpoints. */ | |
7246 | ||
7247 | struct breakpoint * | |
7248 | set_longjmp_breakpoint_for_call_dummy (void) | |
7249 | { | |
7250 | struct breakpoint *b, *retval = NULL; | |
7251 | ||
7252 | ALL_BREAKPOINTS (b) | |
7253 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7254 | { | |
7255 | struct breakpoint *new_b; | |
7256 | ||
7257 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7258 | &momentary_breakpoint_ops, |
7259 | 1); | |
00431a78 | 7260 | new_b->thread = inferior_thread ()->global_num; |
e2e4d78b JK |
7261 | |
7262 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7263 | ||
7264 | gdb_assert (new_b->related_breakpoint == new_b); | |
7265 | if (retval == NULL) | |
7266 | retval = new_b; | |
7267 | new_b->related_breakpoint = retval; | |
7268 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7269 | retval = retval->related_breakpoint; | |
7270 | retval->related_breakpoint = new_b; | |
7271 | } | |
7272 | ||
7273 | return retval; | |
7274 | } | |
7275 | ||
7276 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7277 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7278 | stack. |
7279 | ||
7280 | You should call this function only at places where it is safe to currently | |
7281 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7282 | frames. */ | |
7283 | ||
7284 | void | |
b67a2c6f | 7285 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7286 | { |
7287 | struct breakpoint *b, *b_tmp; | |
7288 | ||
7289 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
5d5658a1 | 7290 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->global_num) |
e2e4d78b JK |
7291 | { |
7292 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7293 | ||
7294 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7295 | dummy_b = dummy_b->related_breakpoint; | |
7296 | if (dummy_b->type != bp_call_dummy | |
7297 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7298 | continue; | |
7299 | ||
00431a78 | 7300 | dummy_frame_discard (dummy_b->frame_id, tp); |
e2e4d78b JK |
7301 | |
7302 | while (b->related_breakpoint != b) | |
7303 | { | |
7304 | if (b_tmp == b->related_breakpoint) | |
7305 | b_tmp = b->related_breakpoint->next; | |
7306 | delete_breakpoint (b->related_breakpoint); | |
7307 | } | |
7308 | delete_breakpoint (b); | |
7309 | } | |
7310 | } | |
7311 | ||
1900040c MS |
7312 | void |
7313 | enable_overlay_breakpoints (void) | |
7314 | { | |
52f0bd74 | 7315 | struct breakpoint *b; |
1900040c MS |
7316 | |
7317 | ALL_BREAKPOINTS (b) | |
7318 | if (b->type == bp_overlay_event) | |
7319 | { | |
7320 | b->enable_state = bp_enabled; | |
44702360 | 7321 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7322 | overlay_events_enabled = 1; |
1900040c MS |
7323 | } |
7324 | } | |
7325 | ||
7326 | void | |
7327 | disable_overlay_breakpoints (void) | |
7328 | { | |
52f0bd74 | 7329 | struct breakpoint *b; |
1900040c MS |
7330 | |
7331 | ALL_BREAKPOINTS (b) | |
7332 | if (b->type == bp_overlay_event) | |
7333 | { | |
7334 | b->enable_state = bp_disabled; | |
44702360 | 7335 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7336 | overlay_events_enabled = 0; |
1900040c MS |
7337 | } |
7338 | } | |
7339 | ||
aa7d318d TT |
7340 | /* Set an active std::terminate breakpoint for each std::terminate |
7341 | master breakpoint. */ | |
7342 | void | |
7343 | set_std_terminate_breakpoint (void) | |
7344 | { | |
35df4500 | 7345 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7346 | |
35df4500 | 7347 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7348 | if (b->pspace == current_program_space |
7349 | && b->type == bp_std_terminate_master) | |
7350 | { | |
06edf0c0 | 7351 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7352 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7353 | } |
7354 | } | |
7355 | ||
7356 | /* Delete all the std::terminate breakpoints. */ | |
7357 | void | |
7358 | delete_std_terminate_breakpoint (void) | |
7359 | { | |
35df4500 | 7360 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7361 | |
35df4500 | 7362 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7363 | if (b->type == bp_std_terminate) |
7364 | delete_breakpoint (b); | |
7365 | } | |
7366 | ||
c4093a6a | 7367 | struct breakpoint * |
a6d9a66e | 7368 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7369 | { |
7370 | struct breakpoint *b; | |
c4093a6a | 7371 | |
06edf0c0 PA |
7372 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7373 | &internal_breakpoint_ops); | |
7374 | ||
b5de0fa7 | 7375 | b->enable_state = bp_enabled; |
f00aae0f | 7376 | /* location has to be used or breakpoint_re_set will delete me. */ |
d28cd78a | 7377 | b->location = new_address_location (b->loc->address, NULL, 0); |
c4093a6a | 7378 | |
44702360 | 7379 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7380 | |
c4093a6a JM |
7381 | return b; |
7382 | } | |
7383 | ||
0101ce28 JJ |
7384 | struct lang_and_radix |
7385 | { | |
7386 | enum language lang; | |
7387 | int radix; | |
7388 | }; | |
7389 | ||
4efc6507 DE |
7390 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7391 | ||
7392 | struct breakpoint * | |
7393 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7394 | { | |
2a7f3dff PA |
7395 | return create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7396 | &internal_breakpoint_ops); | |
4efc6507 | 7397 | } |
0101ce28 | 7398 | |
03673fc7 PP |
7399 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7400 | ||
7401 | void | |
7402 | remove_jit_event_breakpoints (void) | |
7403 | { | |
7404 | struct breakpoint *b, *b_tmp; | |
7405 | ||
7406 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7407 | if (b->type == bp_jit_event | |
7408 | && b->loc->pspace == current_program_space) | |
7409 | delete_breakpoint (b); | |
7410 | } | |
7411 | ||
cae688ec JJ |
7412 | void |
7413 | remove_solib_event_breakpoints (void) | |
7414 | { | |
35df4500 | 7415 | struct breakpoint *b, *b_tmp; |
cae688ec | 7416 | |
35df4500 | 7417 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7418 | if (b->type == bp_shlib_event |
7419 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7420 | delete_breakpoint (b); |
7421 | } | |
7422 | ||
f37f681c PA |
7423 | /* See breakpoint.h. */ |
7424 | ||
7425 | void | |
7426 | remove_solib_event_breakpoints_at_next_stop (void) | |
7427 | { | |
7428 | struct breakpoint *b, *b_tmp; | |
7429 | ||
7430 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7431 | if (b->type == bp_shlib_event | |
7432 | && b->loc->pspace == current_program_space) | |
7433 | b->disposition = disp_del_at_next_stop; | |
7434 | } | |
7435 | ||
04086b45 PA |
7436 | /* Helper for create_solib_event_breakpoint / |
7437 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7438 | INSERT_MODE to pass through to update_global_location_list. */ | |
7439 | ||
7440 | static struct breakpoint * | |
7441 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7442 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7443 | { |
7444 | struct breakpoint *b; | |
7445 | ||
06edf0c0 PA |
7446 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7447 | &internal_breakpoint_ops); | |
04086b45 | 7448 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7449 | return b; |
7450 | } | |
7451 | ||
04086b45 PA |
7452 | struct breakpoint * |
7453 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7454 | { | |
7455 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7456 | } | |
7457 | ||
f37f681c PA |
7458 | /* See breakpoint.h. */ |
7459 | ||
7460 | struct breakpoint * | |
7461 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7462 | { | |
7463 | struct breakpoint *b; | |
7464 | ||
04086b45 PA |
7465 | /* Explicitly tell update_global_location_list to insert |
7466 | locations. */ | |
7467 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7468 | if (!b->loc->inserted) |
7469 | { | |
7470 | delete_breakpoint (b); | |
7471 | return NULL; | |
7472 | } | |
7473 | return b; | |
7474 | } | |
7475 | ||
cae688ec JJ |
7476 | /* Disable any breakpoints that are on code in shared libraries. Only |
7477 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7478 | ||
7479 | void | |
cb851954 | 7480 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7481 | { |
876fa593 | 7482 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7483 | |
876fa593 | 7484 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7485 | { |
2bdf28a0 | 7486 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7487 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7488 | |
4a64f543 MS |
7489 | /* We apply the check to all breakpoints, including disabled for |
7490 | those with loc->duplicate set. This is so that when breakpoint | |
7491 | becomes enabled, or the duplicate is removed, gdb will try to | |
7492 | insert all breakpoints. If we don't set shlib_disabled here, | |
7493 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7494 | if (((b->type == bp_breakpoint) |
508ccb1f | 7495 | || (b->type == bp_jit_event) |
1042e4c0 | 7496 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7497 | || (is_tracepoint (b))) |
6c95b8df | 7498 | && loc->pspace == current_program_space |
0d381245 | 7499 | && !loc->shlib_disabled |
6c95b8df | 7500 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7501 | ) |
0d381245 VP |
7502 | { |
7503 | loc->shlib_disabled = 1; | |
7504 | } | |
cae688ec JJ |
7505 | } |
7506 | } | |
7507 | ||
63644780 NB |
7508 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7509 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7510 | disabled ones can just stay disabled. */ | |
84acb35a | 7511 | |
75149521 | 7512 | static void |
84acb35a JJ |
7513 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7514 | { | |
876fa593 | 7515 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7516 | int disabled_shlib_breaks = 0; |
7517 | ||
876fa593 | 7518 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7519 | { |
2bdf28a0 | 7520 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7521 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7522 | |
1e4d1764 | 7523 | if (solib->pspace == loc->pspace |
e2dd7057 | 7524 | && !loc->shlib_disabled |
1e4d1764 YQ |
7525 | && (((b->type == bp_breakpoint |
7526 | || b->type == bp_jit_event | |
7527 | || b->type == bp_hardware_breakpoint) | |
7528 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7529 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7530 | || is_tracepoint (b)) | |
e2dd7057 | 7531 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7532 | { |
e2dd7057 PP |
7533 | loc->shlib_disabled = 1; |
7534 | /* At this point, we cannot rely on remove_breakpoint | |
7535 | succeeding so we must mark the breakpoint as not inserted | |
7536 | to prevent future errors occurring in remove_breakpoints. */ | |
7537 | loc->inserted = 0; | |
8d3788bd VP |
7538 | |
7539 | /* This may cause duplicate notifications for the same breakpoint. */ | |
76727919 | 7540 | gdb::observers::breakpoint_modified.notify (b); |
8d3788bd | 7541 | |
e2dd7057 PP |
7542 | if (!disabled_shlib_breaks) |
7543 | { | |
223ffa71 | 7544 | target_terminal::ours_for_output (); |
3e43a32a MS |
7545 | warning (_("Temporarily disabling breakpoints " |
7546 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7547 | solib->so_name); |
84acb35a | 7548 | } |
e2dd7057 | 7549 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7550 | } |
7551 | } | |
84acb35a JJ |
7552 | } |
7553 | ||
63644780 NB |
7554 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7555 | notification of free_objfile. Only apply to enabled breakpoints, | |
7556 | disabled ones can just stay disabled. */ | |
7557 | ||
7558 | static void | |
7559 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7560 | { | |
7561 | struct breakpoint *b; | |
7562 | ||
7563 | if (objfile == NULL) | |
7564 | return; | |
7565 | ||
d03de421 PA |
7566 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7567 | managed by the user with add-symbol-file/remove-symbol-file. | |
7568 | Similarly to how breakpoints in shared libraries are handled in | |
7569 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7570 | shlib_disabled so they end up uninserted on the next global |
7571 | location list update. Shared libraries not loaded by the user | |
7572 | aren't handled here -- they're already handled in | |
7573 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7574 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7575 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7576 | main objfile). */ | |
7577 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7578 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7579 | return; |
7580 | ||
7581 | ALL_BREAKPOINTS (b) | |
7582 | { | |
7583 | struct bp_location *loc; | |
7584 | int bp_modified = 0; | |
7585 | ||
7586 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7587 | continue; | |
7588 | ||
7589 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7590 | { | |
7591 | CORE_ADDR loc_addr = loc->address; | |
7592 | ||
7593 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7594 | && loc->loc_type != bp_loc_software_breakpoint) | |
7595 | continue; | |
7596 | ||
7597 | if (loc->shlib_disabled != 0) | |
7598 | continue; | |
7599 | ||
7600 | if (objfile->pspace != loc->pspace) | |
7601 | continue; | |
7602 | ||
7603 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7604 | && loc->loc_type != bp_loc_software_breakpoint) | |
7605 | continue; | |
7606 | ||
7607 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7608 | { | |
7609 | loc->shlib_disabled = 1; | |
08351840 PA |
7610 | /* At this point, we don't know whether the object was |
7611 | unmapped from the inferior or not, so leave the | |
7612 | inserted flag alone. We'll handle failure to | |
7613 | uninsert quietly, in case the object was indeed | |
7614 | unmapped. */ | |
63644780 NB |
7615 | |
7616 | mark_breakpoint_location_modified (loc); | |
7617 | ||
7618 | bp_modified = 1; | |
7619 | } | |
7620 | } | |
7621 | ||
7622 | if (bp_modified) | |
76727919 | 7623 | gdb::observers::breakpoint_modified.notify (b); |
63644780 NB |
7624 | } |
7625 | } | |
7626 | ||
ce78b96d JB |
7627 | /* FORK & VFORK catchpoints. */ |
7628 | ||
e29a4733 | 7629 | /* An instance of this type is used to represent a fork or vfork |
c1fc2657 SM |
7630 | catchpoint. A breakpoint is really of this type iff its ops pointer points |
7631 | to CATCH_FORK_BREAKPOINT_OPS. */ | |
e29a4733 | 7632 | |
c1fc2657 | 7633 | struct fork_catchpoint : public breakpoint |
e29a4733 | 7634 | { |
e29a4733 PA |
7635 | /* Process id of a child process whose forking triggered this |
7636 | catchpoint. This field is only valid immediately after this | |
7637 | catchpoint has triggered. */ | |
7638 | ptid_t forked_inferior_pid; | |
7639 | }; | |
7640 | ||
4a64f543 MS |
7641 | /* Implement the "insert" breakpoint_ops method for fork |
7642 | catchpoints. */ | |
ce78b96d | 7643 | |
77b06cd7 TJB |
7644 | static int |
7645 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7646 | { |
e99b03dc | 7647 | return target_insert_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7648 | } |
7649 | ||
4a64f543 MS |
7650 | /* Implement the "remove" breakpoint_ops method for fork |
7651 | catchpoints. */ | |
ce78b96d JB |
7652 | |
7653 | static int | |
73971819 | 7654 | remove_catch_fork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7655 | { |
e99b03dc | 7656 | return target_remove_fork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7657 | } |
7658 | ||
7659 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7660 | catchpoints. */ | |
7661 | ||
7662 | static int | |
f1310107 | 7663 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
bd522513 | 7664 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7665 | const struct target_waitstatus *ws) |
ce78b96d | 7666 | { |
e29a4733 PA |
7667 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7668 | ||
f90263c1 TT |
7669 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7670 | return 0; | |
7671 | ||
7672 | c->forked_inferior_pid = ws->value.related_pid; | |
7673 | return 1; | |
ce78b96d JB |
7674 | } |
7675 | ||
4a64f543 MS |
7676 | /* Implement the "print_it" breakpoint_ops method for fork |
7677 | catchpoints. */ | |
ce78b96d JB |
7678 | |
7679 | static enum print_stop_action | |
348d480f | 7680 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7681 | { |
36dfb11c | 7682 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7683 | struct breakpoint *b = bs->breakpoint_at; |
7684 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7685 | |
ce78b96d | 7686 | annotate_catchpoint (b->number); |
f303dbd6 | 7687 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7688 | if (b->disposition == disp_del) |
112e8700 | 7689 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7690 | else |
112e8700 SM |
7691 | uiout->text ("Catchpoint "); |
7692 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7693 | { |
112e8700 SM |
7694 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_FORK)); |
7695 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7696 | } |
381befee | 7697 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7698 | uiout->text (" (forked process "); |
381befee | 7699 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7700 | uiout->text ("), "); |
ce78b96d JB |
7701 | return PRINT_SRC_AND_LOC; |
7702 | } | |
7703 | ||
4a64f543 MS |
7704 | /* Implement the "print_one" breakpoint_ops method for fork |
7705 | catchpoints. */ | |
ce78b96d JB |
7706 | |
7707 | static void | |
a6d9a66e | 7708 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7709 | { |
e29a4733 | 7710 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7711 | struct value_print_options opts; |
79a45e25 | 7712 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7713 | |
7714 | get_user_print_options (&opts); | |
7715 | ||
4a64f543 MS |
7716 | /* Field 4, the address, is omitted (which makes the columns not |
7717 | line up too nicely with the headers, but the effect is relatively | |
7718 | readable). */ | |
79a45b7d | 7719 | if (opts.addressprint) |
112e8700 | 7720 | uiout->field_skip ("addr"); |
ce78b96d | 7721 | annotate_field (5); |
112e8700 | 7722 | uiout->text ("fork"); |
d7e15655 | 7723 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7724 | { |
112e8700 | 7725 | uiout->text (", process "); |
381befee | 7726 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7727 | uiout->spaces (1); |
ce78b96d | 7728 | } |
8ac3646f | 7729 | |
112e8700 SM |
7730 | if (uiout->is_mi_like_p ()) |
7731 | uiout->field_string ("catch-type", "fork"); | |
ce78b96d JB |
7732 | } |
7733 | ||
7734 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7735 | catchpoints. */ | |
7736 | ||
7737 | static void | |
7738 | print_mention_catch_fork (struct breakpoint *b) | |
7739 | { | |
7740 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7741 | } | |
7742 | ||
6149aea9 PA |
7743 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7744 | catchpoints. */ | |
7745 | ||
7746 | static void | |
7747 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7748 | { | |
7749 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7750 | print_recreate_thread (b, fp); |
6149aea9 PA |
7751 | } |
7752 | ||
ce78b96d JB |
7753 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7754 | ||
2060206e | 7755 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7756 | |
4a64f543 MS |
7757 | /* Implement the "insert" breakpoint_ops method for vfork |
7758 | catchpoints. */ | |
ce78b96d | 7759 | |
77b06cd7 TJB |
7760 | static int |
7761 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7762 | { |
e99b03dc | 7763 | return target_insert_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7764 | } |
7765 | ||
4a64f543 MS |
7766 | /* Implement the "remove" breakpoint_ops method for vfork |
7767 | catchpoints. */ | |
ce78b96d JB |
7768 | |
7769 | static int | |
73971819 | 7770 | remove_catch_vfork (struct bp_location *bl, enum remove_bp_reason reason) |
ce78b96d | 7771 | { |
e99b03dc | 7772 | return target_remove_vfork_catchpoint (inferior_ptid.pid ()); |
ce78b96d JB |
7773 | } |
7774 | ||
7775 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7776 | catchpoints. */ | |
7777 | ||
7778 | static int | |
f1310107 | 7779 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
bd522513 | 7780 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 7781 | const struct target_waitstatus *ws) |
ce78b96d | 7782 | { |
e29a4733 PA |
7783 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7784 | ||
f90263c1 TT |
7785 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7786 | return 0; | |
7787 | ||
7788 | c->forked_inferior_pid = ws->value.related_pid; | |
7789 | return 1; | |
ce78b96d JB |
7790 | } |
7791 | ||
4a64f543 MS |
7792 | /* Implement the "print_it" breakpoint_ops method for vfork |
7793 | catchpoints. */ | |
ce78b96d JB |
7794 | |
7795 | static enum print_stop_action | |
348d480f | 7796 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7797 | { |
36dfb11c | 7798 | struct ui_out *uiout = current_uiout; |
348d480f | 7799 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7800 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7801 | ||
ce78b96d | 7802 | annotate_catchpoint (b->number); |
f303dbd6 | 7803 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 7804 | if (b->disposition == disp_del) |
112e8700 | 7805 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 7806 | else |
112e8700 SM |
7807 | uiout->text ("Catchpoint "); |
7808 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 7809 | { |
112e8700 SM |
7810 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_VFORK)); |
7811 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 7812 | } |
381befee | 7813 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 7814 | uiout->text (" (vforked process "); |
381befee | 7815 | uiout->field_signed ("newpid", c->forked_inferior_pid.pid ()); |
112e8700 | 7816 | uiout->text ("), "); |
ce78b96d JB |
7817 | return PRINT_SRC_AND_LOC; |
7818 | } | |
7819 | ||
4a64f543 MS |
7820 | /* Implement the "print_one" breakpoint_ops method for vfork |
7821 | catchpoints. */ | |
ce78b96d JB |
7822 | |
7823 | static void | |
a6d9a66e | 7824 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7825 | { |
e29a4733 | 7826 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7827 | struct value_print_options opts; |
79a45e25 | 7828 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7829 | |
7830 | get_user_print_options (&opts); | |
4a64f543 MS |
7831 | /* Field 4, the address, is omitted (which makes the columns not |
7832 | line up too nicely with the headers, but the effect is relatively | |
7833 | readable). */ | |
79a45b7d | 7834 | if (opts.addressprint) |
112e8700 | 7835 | uiout->field_skip ("addr"); |
ce78b96d | 7836 | annotate_field (5); |
112e8700 | 7837 | uiout->text ("vfork"); |
d7e15655 | 7838 | if (c->forked_inferior_pid != null_ptid) |
ce78b96d | 7839 | { |
112e8700 | 7840 | uiout->text (", process "); |
381befee | 7841 | uiout->field_signed ("what", c->forked_inferior_pid.pid ()); |
112e8700 | 7842 | uiout->spaces (1); |
ce78b96d | 7843 | } |
8ac3646f | 7844 | |
112e8700 SM |
7845 | if (uiout->is_mi_like_p ()) |
7846 | uiout->field_string ("catch-type", "vfork"); | |
ce78b96d JB |
7847 | } |
7848 | ||
7849 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7850 | catchpoints. */ | |
7851 | ||
7852 | static void | |
7853 | print_mention_catch_vfork (struct breakpoint *b) | |
7854 | { | |
7855 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7856 | } | |
7857 | ||
6149aea9 PA |
7858 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7859 | catchpoints. */ | |
7860 | ||
7861 | static void | |
7862 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7863 | { | |
7864 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7865 | print_recreate_thread (b, fp); |
6149aea9 PA |
7866 | } |
7867 | ||
ce78b96d JB |
7868 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7869 | ||
2060206e | 7870 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7871 | |
edcc5120 | 7872 | /* An instance of this type is used to represent an solib catchpoint. |
c1fc2657 | 7873 | A breakpoint is really of this type iff its ops pointer points to |
edcc5120 TT |
7874 | CATCH_SOLIB_BREAKPOINT_OPS. */ |
7875 | ||
c1fc2657 | 7876 | struct solib_catchpoint : public breakpoint |
edcc5120 | 7877 | { |
c1fc2657 | 7878 | ~solib_catchpoint () override; |
edcc5120 TT |
7879 | |
7880 | /* True for "catch load", false for "catch unload". */ | |
7881 | unsigned char is_load; | |
7882 | ||
7883 | /* Regular expression to match, if any. COMPILED is only valid when | |
7884 | REGEX is non-NULL. */ | |
7885 | char *regex; | |
2d7cc5c7 | 7886 | std::unique_ptr<compiled_regex> compiled; |
edcc5120 TT |
7887 | }; |
7888 | ||
c1fc2657 | 7889 | solib_catchpoint::~solib_catchpoint () |
edcc5120 | 7890 | { |
c1fc2657 | 7891 | xfree (this->regex); |
edcc5120 TT |
7892 | } |
7893 | ||
7894 | static int | |
7895 | insert_catch_solib (struct bp_location *ignore) | |
7896 | { | |
7897 | return 0; | |
7898 | } | |
7899 | ||
7900 | static int | |
73971819 | 7901 | remove_catch_solib (struct bp_location *ignore, enum remove_bp_reason reason) |
edcc5120 TT |
7902 | { |
7903 | return 0; | |
7904 | } | |
7905 | ||
7906 | static int | |
7907 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
bd522513 | 7908 | const address_space *aspace, |
edcc5120 TT |
7909 | CORE_ADDR bp_addr, |
7910 | const struct target_waitstatus *ws) | |
7911 | { | |
7912 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7913 | struct breakpoint *other; | |
7914 | ||
7915 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7916 | return 1; | |
7917 | ||
7918 | ALL_BREAKPOINTS (other) | |
7919 | { | |
7920 | struct bp_location *other_bl; | |
7921 | ||
7922 | if (other == bl->owner) | |
7923 | continue; | |
7924 | ||
7925 | if (other->type != bp_shlib_event) | |
7926 | continue; | |
7927 | ||
c1fc2657 | 7928 | if (self->pspace != NULL && other->pspace != self->pspace) |
edcc5120 TT |
7929 | continue; |
7930 | ||
7931 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7932 | { | |
7933 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7934 | return 1; | |
7935 | } | |
7936 | } | |
7937 | ||
7938 | return 0; | |
7939 | } | |
7940 | ||
7941 | static void | |
7942 | check_status_catch_solib (struct bpstats *bs) | |
7943 | { | |
7944 | struct solib_catchpoint *self | |
7945 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
edcc5120 TT |
7946 | |
7947 | if (self->is_load) | |
7948 | { | |
52941706 | 7949 | for (so_list *iter : current_program_space->added_solibs) |
edcc5120 TT |
7950 | { |
7951 | if (!self->regex | |
2d7cc5c7 | 7952 | || self->compiled->exec (iter->so_name, 0, NULL, 0) == 0) |
edcc5120 TT |
7953 | return; |
7954 | } | |
7955 | } | |
7956 | else | |
7957 | { | |
6fb16ce6 | 7958 | for (const std::string &iter : current_program_space->deleted_solibs) |
edcc5120 TT |
7959 | { |
7960 | if (!self->regex | |
6fb16ce6 | 7961 | || self->compiled->exec (iter.c_str (), 0, NULL, 0) == 0) |
edcc5120 TT |
7962 | return; |
7963 | } | |
7964 | } | |
7965 | ||
7966 | bs->stop = 0; | |
7967 | bs->print_it = print_it_noop; | |
7968 | } | |
7969 | ||
7970 | static enum print_stop_action | |
7971 | print_it_catch_solib (bpstat bs) | |
7972 | { | |
7973 | struct breakpoint *b = bs->breakpoint_at; | |
7974 | struct ui_out *uiout = current_uiout; | |
7975 | ||
7976 | annotate_catchpoint (b->number); | |
f303dbd6 | 7977 | maybe_print_thread_hit_breakpoint (uiout); |
edcc5120 | 7978 | if (b->disposition == disp_del) |
112e8700 | 7979 | uiout->text ("Temporary catchpoint "); |
edcc5120 | 7980 | else |
112e8700 | 7981 | uiout->text ("Catchpoint "); |
381befee | 7982 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
7983 | uiout->text ("\n"); |
7984 | if (uiout->is_mi_like_p ()) | |
7985 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
edcc5120 TT |
7986 | print_solib_event (1); |
7987 | return PRINT_SRC_AND_LOC; | |
7988 | } | |
7989 | ||
7990 | static void | |
7991 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7992 | { | |
7993 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7994 | struct value_print_options opts; | |
7995 | struct ui_out *uiout = current_uiout; | |
edcc5120 TT |
7996 | |
7997 | get_user_print_options (&opts); | |
7998 | /* Field 4, the address, is omitted (which makes the columns not | |
7999 | line up too nicely with the headers, but the effect is relatively | |
8000 | readable). */ | |
8001 | if (opts.addressprint) | |
8002 | { | |
8003 | annotate_field (4); | |
112e8700 | 8004 | uiout->field_skip ("addr"); |
edcc5120 TT |
8005 | } |
8006 | ||
528e1572 | 8007 | std::string msg; |
edcc5120 TT |
8008 | annotate_field (5); |
8009 | if (self->is_load) | |
8010 | { | |
8011 | if (self->regex) | |
528e1572 | 8012 | msg = string_printf (_("load of library matching %s"), self->regex); |
edcc5120 | 8013 | else |
528e1572 | 8014 | msg = _("load of library"); |
edcc5120 TT |
8015 | } |
8016 | else | |
8017 | { | |
8018 | if (self->regex) | |
528e1572 | 8019 | msg = string_printf (_("unload of library matching %s"), self->regex); |
edcc5120 | 8020 | else |
528e1572 | 8021 | msg = _("unload of library"); |
edcc5120 | 8022 | } |
112e8700 | 8023 | uiout->field_string ("what", msg); |
8ac3646f | 8024 | |
112e8700 SM |
8025 | if (uiout->is_mi_like_p ()) |
8026 | uiout->field_string ("catch-type", self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8027 | } |
8028 | ||
8029 | static void | |
8030 | print_mention_catch_solib (struct breakpoint *b) | |
8031 | { | |
8032 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8033 | ||
8034 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8035 | self->is_load ? "load" : "unload"); | |
8036 | } | |
8037 | ||
8038 | static void | |
8039 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8040 | { | |
8041 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8042 | ||
8043 | fprintf_unfiltered (fp, "%s %s", | |
8044 | b->disposition == disp_del ? "tcatch" : "catch", | |
8045 | self->is_load ? "load" : "unload"); | |
8046 | if (self->regex) | |
8047 | fprintf_unfiltered (fp, " %s", self->regex); | |
8048 | fprintf_unfiltered (fp, "\n"); | |
8049 | } | |
8050 | ||
8051 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8052 | ||
91985142 MG |
8053 | /* Shared helper function (MI and CLI) for creating and installing |
8054 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8055 | the events to be caught are load events, otherwise they are | |
8056 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8057 | temporary one. If ENABLED is non-zero the catchpoint is | |
8058 | created in an enabled state. */ | |
edcc5120 | 8059 | |
91985142 | 8060 | void |
a121b7c1 | 8061 | add_solib_catchpoint (const char *arg, int is_load, int is_temp, int enabled) |
edcc5120 | 8062 | { |
edcc5120 | 8063 | struct gdbarch *gdbarch = get_current_arch (); |
edcc5120 | 8064 | |
edcc5120 TT |
8065 | if (!arg) |
8066 | arg = ""; | |
f1735a53 | 8067 | arg = skip_spaces (arg); |
edcc5120 | 8068 | |
36bd8eaa | 8069 | std::unique_ptr<solib_catchpoint> c (new solib_catchpoint ()); |
edcc5120 TT |
8070 | |
8071 | if (*arg != '\0') | |
8072 | { | |
2d7cc5c7 PA |
8073 | c->compiled.reset (new compiled_regex (arg, REG_NOSUB, |
8074 | _("Invalid regexp"))); | |
edcc5120 TT |
8075 | c->regex = xstrdup (arg); |
8076 | } | |
8077 | ||
8078 | c->is_load = is_load; | |
36bd8eaa | 8079 | init_catchpoint (c.get (), gdbarch, is_temp, NULL, |
edcc5120 TT |
8080 | &catch_solib_breakpoint_ops); |
8081 | ||
c1fc2657 | 8082 | c->enable_state = enabled ? bp_enabled : bp_disabled; |
91985142 | 8083 | |
b270e6f9 | 8084 | install_breakpoint (0, std::move (c), 1); |
edcc5120 TT |
8085 | } |
8086 | ||
91985142 MG |
8087 | /* A helper function that does all the work for "catch load" and |
8088 | "catch unload". */ | |
8089 | ||
8090 | static void | |
eb4c3f4a | 8091 | catch_load_or_unload (const char *arg, int from_tty, int is_load, |
91985142 MG |
8092 | struct cmd_list_element *command) |
8093 | { | |
8094 | int tempflag; | |
8095 | const int enabled = 1; | |
8096 | ||
8097 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8098 | ||
8099 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8100 | } | |
8101 | ||
edcc5120 | 8102 | static void |
eb4c3f4a | 8103 | catch_load_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8104 | struct cmd_list_element *command) |
8105 | { | |
8106 | catch_load_or_unload (arg, from_tty, 1, command); | |
8107 | } | |
8108 | ||
8109 | static void | |
eb4c3f4a | 8110 | catch_unload_command_1 (const char *arg, int from_tty, |
edcc5120 TT |
8111 | struct cmd_list_element *command) |
8112 | { | |
8113 | catch_load_or_unload (arg, from_tty, 0, command); | |
8114 | } | |
8115 | ||
346774a9 PA |
8116 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8117 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8118 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8119 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8120 | |
ab04a2af | 8121 | void |
346774a9 PA |
8122 | init_catchpoint (struct breakpoint *b, |
8123 | struct gdbarch *gdbarch, int tempflag, | |
63160a43 | 8124 | const char *cond_string, |
c0a91b2b | 8125 | const struct breakpoint_ops *ops) |
c906108c | 8126 | { |
51abb421 | 8127 | symtab_and_line sal; |
6c95b8df | 8128 | sal.pspace = current_program_space; |
c5aa993b | 8129 | |
28010a5d | 8130 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8131 | |
1b36a34b | 8132 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8133 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8134 | } |
8135 | ||
28010a5d | 8136 | void |
b270e6f9 | 8137 | install_breakpoint (int internal, std::unique_ptr<breakpoint> &&arg, int update_gll) |
c56053d2 | 8138 | { |
b270e6f9 | 8139 | breakpoint *b = add_to_breakpoint_chain (std::move (arg)); |
3a5c3e22 | 8140 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8141 | if (is_tracepoint (b)) |
8142 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8143 | if (!internal) |
8144 | mention (b); | |
76727919 | 8145 | gdb::observers::breakpoint_created.notify (b); |
3ea46bff YQ |
8146 | |
8147 | if (update_gll) | |
44702360 | 8148 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8149 | } |
8150 | ||
9b70b993 | 8151 | static void |
a6d9a66e | 8152 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
63160a43 | 8153 | int tempflag, const char *cond_string, |
c0a91b2b | 8154 | const struct breakpoint_ops *ops) |
c906108c | 8155 | { |
b270e6f9 | 8156 | std::unique_ptr<fork_catchpoint> c (new fork_catchpoint ()); |
ce78b96d | 8157 | |
b270e6f9 | 8158 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, ops); |
e29a4733 PA |
8159 | |
8160 | c->forked_inferior_pid = null_ptid; | |
8161 | ||
b270e6f9 | 8162 | install_breakpoint (0, std::move (c), 1); |
c906108c SS |
8163 | } |
8164 | ||
fe798b75 JB |
8165 | /* Exec catchpoints. */ |
8166 | ||
b4d90040 | 8167 | /* An instance of this type is used to represent an exec catchpoint. |
c1fc2657 | 8168 | A breakpoint is really of this type iff its ops pointer points to |
b4d90040 PA |
8169 | CATCH_EXEC_BREAKPOINT_OPS. */ |
8170 | ||
c1fc2657 | 8171 | struct exec_catchpoint : public breakpoint |
b4d90040 | 8172 | { |
c1fc2657 | 8173 | ~exec_catchpoint () override; |
b4d90040 PA |
8174 | |
8175 | /* Filename of a program whose exec triggered this catchpoint. | |
8176 | This field is only valid immediately after this catchpoint has | |
8177 | triggered. */ | |
8178 | char *exec_pathname; | |
8179 | }; | |
8180 | ||
c1fc2657 | 8181 | /* Exec catchpoint destructor. */ |
b4d90040 | 8182 | |
c1fc2657 | 8183 | exec_catchpoint::~exec_catchpoint () |
b4d90040 | 8184 | { |
c1fc2657 | 8185 | xfree (this->exec_pathname); |
b4d90040 PA |
8186 | } |
8187 | ||
77b06cd7 TJB |
8188 | static int |
8189 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8190 | { |
e99b03dc | 8191 | return target_insert_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8192 | } |
c906108c | 8193 | |
fe798b75 | 8194 | static int |
73971819 | 8195 | remove_catch_exec (struct bp_location *bl, enum remove_bp_reason reason) |
fe798b75 | 8196 | { |
e99b03dc | 8197 | return target_remove_exec_catchpoint (inferior_ptid.pid ()); |
fe798b75 | 8198 | } |
c906108c | 8199 | |
fe798b75 | 8200 | static int |
f1310107 | 8201 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
bd522513 | 8202 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 8203 | const struct target_waitstatus *ws) |
fe798b75 | 8204 | { |
b4d90040 PA |
8205 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8206 | ||
f90263c1 TT |
8207 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8208 | return 0; | |
8209 | ||
8210 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8211 | return 1; | |
fe798b75 | 8212 | } |
c906108c | 8213 | |
fe798b75 | 8214 | static enum print_stop_action |
348d480f | 8215 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8216 | { |
36dfb11c | 8217 | struct ui_out *uiout = current_uiout; |
348d480f | 8218 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8219 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8220 | ||
fe798b75 | 8221 | annotate_catchpoint (b->number); |
f303dbd6 | 8222 | maybe_print_thread_hit_breakpoint (uiout); |
36dfb11c | 8223 | if (b->disposition == disp_del) |
112e8700 | 8224 | uiout->text ("Temporary catchpoint "); |
36dfb11c | 8225 | else |
112e8700 SM |
8226 | uiout->text ("Catchpoint "); |
8227 | if (uiout->is_mi_like_p ()) | |
36dfb11c | 8228 | { |
112e8700 SM |
8229 | uiout->field_string ("reason", async_reason_lookup (EXEC_ASYNC_EXEC)); |
8230 | uiout->field_string ("disp", bpdisp_text (b->disposition)); | |
36dfb11c | 8231 | } |
381befee | 8232 | uiout->field_signed ("bkptno", b->number); |
112e8700 SM |
8233 | uiout->text (" (exec'd "); |
8234 | uiout->field_string ("new-exec", c->exec_pathname); | |
8235 | uiout->text ("), "); | |
36dfb11c | 8236 | |
fe798b75 | 8237 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8238 | } |
8239 | ||
fe798b75 | 8240 | static void |
a6d9a66e | 8241 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8242 | { |
b4d90040 | 8243 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8244 | struct value_print_options opts; |
79a45e25 | 8245 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8246 | |
8247 | get_user_print_options (&opts); | |
8248 | ||
8249 | /* Field 4, the address, is omitted (which makes the columns | |
8250 | not line up too nicely with the headers, but the effect | |
8251 | is relatively readable). */ | |
8252 | if (opts.addressprint) | |
112e8700 | 8253 | uiout->field_skip ("addr"); |
fe798b75 | 8254 | annotate_field (5); |
112e8700 | 8255 | uiout->text ("exec"); |
b4d90040 | 8256 | if (c->exec_pathname != NULL) |
fe798b75 | 8257 | { |
112e8700 SM |
8258 | uiout->text (", program \""); |
8259 | uiout->field_string ("what", c->exec_pathname); | |
8260 | uiout->text ("\" "); | |
fe798b75 | 8261 | } |
8ac3646f | 8262 | |
112e8700 SM |
8263 | if (uiout->is_mi_like_p ()) |
8264 | uiout->field_string ("catch-type", "exec"); | |
fe798b75 JB |
8265 | } |
8266 | ||
8267 | static void | |
8268 | print_mention_catch_exec (struct breakpoint *b) | |
8269 | { | |
8270 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8271 | } | |
8272 | ||
6149aea9 PA |
8273 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8274 | catchpoints. */ | |
8275 | ||
8276 | static void | |
8277 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8278 | { | |
8279 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8280 | print_recreate_thread (b, fp); |
6149aea9 PA |
8281 | } |
8282 | ||
2060206e | 8283 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8284 | |
c906108c | 8285 | static int |
fba45db2 | 8286 | hw_breakpoint_used_count (void) |
c906108c | 8287 | { |
c906108c | 8288 | int i = 0; |
f1310107 TJB |
8289 | struct breakpoint *b; |
8290 | struct bp_location *bl; | |
c906108c SS |
8291 | |
8292 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8293 | { |
d6b74ac4 | 8294 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8295 | for (bl = b->loc; bl; bl = bl->next) |
8296 | { | |
8297 | /* Special types of hardware breakpoints may use more than | |
8298 | one register. */ | |
348d480f | 8299 | i += b->ops->resources_needed (bl); |
f1310107 | 8300 | } |
c5aa993b | 8301 | } |
c906108c SS |
8302 | |
8303 | return i; | |
8304 | } | |
8305 | ||
a1398e0c PA |
8306 | /* Returns the resources B would use if it were a hardware |
8307 | watchpoint. */ | |
8308 | ||
c906108c | 8309 | static int |
a1398e0c | 8310 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8311 | { |
c906108c | 8312 | int i = 0; |
e09342b5 | 8313 | struct bp_location *bl; |
c906108c | 8314 | |
a1398e0c PA |
8315 | if (!breakpoint_enabled (b)) |
8316 | return 0; | |
8317 | ||
8318 | for (bl = b->loc; bl; bl = bl->next) | |
8319 | { | |
8320 | /* Special types of hardware watchpoints may use more than | |
8321 | one register. */ | |
8322 | i += b->ops->resources_needed (bl); | |
8323 | } | |
8324 | ||
8325 | return i; | |
8326 | } | |
8327 | ||
8328 | /* Returns the sum the used resources of all hardware watchpoints of | |
8329 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8330 | the sum of the used resources of all hardware watchpoints of other | |
8331 | types _not_ TYPE. */ | |
8332 | ||
8333 | static int | |
8334 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8335 | enum bptype type, int *other_type_used) | |
8336 | { | |
8337 | int i = 0; | |
8338 | struct breakpoint *b; | |
8339 | ||
c906108c SS |
8340 | *other_type_used = 0; |
8341 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8342 | { |
a1398e0c PA |
8343 | if (b == except) |
8344 | continue; | |
e09342b5 TJB |
8345 | if (!breakpoint_enabled (b)) |
8346 | continue; | |
8347 | ||
a1398e0c PA |
8348 | if (b->type == type) |
8349 | i += hw_watchpoint_use_count (b); | |
8350 | else if (is_hardware_watchpoint (b)) | |
8351 | *other_type_used = 1; | |
e09342b5 TJB |
8352 | } |
8353 | ||
c906108c SS |
8354 | return i; |
8355 | } | |
8356 | ||
c906108c | 8357 | void |
fba45db2 | 8358 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8359 | { |
c5aa993b | 8360 | struct breakpoint *b; |
c906108c SS |
8361 | |
8362 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8363 | { |
cc60f2e3 | 8364 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8365 | { |
b5de0fa7 | 8366 | b->enable_state = bp_call_disabled; |
44702360 | 8367 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
8368 | } |
8369 | } | |
c906108c SS |
8370 | } |
8371 | ||
8372 | void | |
fba45db2 | 8373 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8374 | { |
c5aa993b | 8375 | struct breakpoint *b; |
c906108c SS |
8376 | |
8377 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8378 | { |
cc60f2e3 | 8379 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8380 | { |
b5de0fa7 | 8381 | b->enable_state = bp_enabled; |
44702360 | 8382 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
8383 | } |
8384 | } | |
c906108c SS |
8385 | } |
8386 | ||
8bea4e01 UW |
8387 | void |
8388 | disable_breakpoints_before_startup (void) | |
8389 | { | |
6c95b8df | 8390 | current_program_space->executing_startup = 1; |
44702360 | 8391 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
8392 | } |
8393 | ||
8394 | void | |
8395 | enable_breakpoints_after_startup (void) | |
8396 | { | |
6c95b8df | 8397 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8398 | breakpoint_re_set (); |
8bea4e01 UW |
8399 | } |
8400 | ||
7c16b83e PA |
8401 | /* Create a new single-step breakpoint for thread THREAD, with no |
8402 | locations. */ | |
c906108c | 8403 | |
7c16b83e PA |
8404 | static struct breakpoint * |
8405 | new_single_step_breakpoint (int thread, struct gdbarch *gdbarch) | |
8406 | { | |
b270e6f9 | 8407 | std::unique_ptr<breakpoint> b (new breakpoint ()); |
7c16b83e | 8408 | |
b270e6f9 | 8409 | init_raw_breakpoint_without_location (b.get (), gdbarch, bp_single_step, |
7c16b83e PA |
8410 | &momentary_breakpoint_ops); |
8411 | ||
8412 | b->disposition = disp_donttouch; | |
8413 | b->frame_id = null_frame_id; | |
8414 | ||
8415 | b->thread = thread; | |
8416 | gdb_assert (b->thread != 0); | |
8417 | ||
b270e6f9 | 8418 | return add_to_breakpoint_chain (std::move (b)); |
7c16b83e PA |
8419 | } |
8420 | ||
8421 | /* Set a momentary breakpoint of type TYPE at address specified by | |
8422 | SAL. If FRAME_ID is valid, the breakpoint is restricted to that | |
8423 | frame. */ | |
c906108c | 8424 | |
454dafbd | 8425 | breakpoint_up |
a6d9a66e UW |
8426 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8427 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8428 | { |
52f0bd74 | 8429 | struct breakpoint *b; |
edb3359d | 8430 | |
193facb3 JK |
8431 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8432 | tail-called one. */ | |
8433 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8434 | |
06edf0c0 | 8435 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8436 | b->enable_state = bp_enabled; |
8437 | b->disposition = disp_donttouch; | |
818dd999 | 8438 | b->frame_id = frame_id; |
c906108c | 8439 | |
00431a78 | 8440 | b->thread = inferior_thread ()->global_num; |
c906108c | 8441 | |
44702360 | 8442 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 8443 | |
454dafbd | 8444 | return breakpoint_up (b); |
c906108c | 8445 | } |
611c83ae | 8446 | |
06edf0c0 | 8447 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
8448 | The new breakpoint will have type TYPE, use OPS as its |
8449 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 8450 | |
06edf0c0 PA |
8451 | static struct breakpoint * |
8452 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8453 | enum bptype type, | |
a1aa2221 LM |
8454 | const struct breakpoint_ops *ops, |
8455 | int loc_enabled) | |
e58b0e63 PA |
8456 | { |
8457 | struct breakpoint *copy; | |
8458 | ||
06edf0c0 | 8459 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8460 | copy->loc = allocate_bp_location (copy); |
0ba852ab | 8461 | set_breakpoint_location_function (copy->loc); |
e58b0e63 | 8462 | |
a6d9a66e | 8463 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8464 | copy->loc->requested_address = orig->loc->requested_address; |
8465 | copy->loc->address = orig->loc->address; | |
8466 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8467 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8468 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8469 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8470 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 8471 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
8472 | copy->frame_id = orig->frame_id; |
8473 | copy->thread = orig->thread; | |
6c95b8df | 8474 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8475 | |
8476 | copy->enable_state = bp_enabled; | |
8477 | copy->disposition = disp_donttouch; | |
8478 | copy->number = internal_breakpoint_number--; | |
8479 | ||
44702360 | 8480 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
8481 | return copy; |
8482 | } | |
8483 | ||
06edf0c0 PA |
8484 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8485 | ORIG is NULL. */ | |
8486 | ||
8487 | struct breakpoint * | |
8488 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8489 | { | |
8490 | /* If there's nothing to clone, then return nothing. */ | |
8491 | if (orig == NULL) | |
8492 | return NULL; | |
8493 | ||
a1aa2221 | 8494 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
8495 | } |
8496 | ||
454dafbd | 8497 | breakpoint_up |
a6d9a66e UW |
8498 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8499 | enum bptype type) | |
611c83ae PA |
8500 | { |
8501 | struct symtab_and_line sal; | |
8502 | ||
8503 | sal = find_pc_line (pc, 0); | |
8504 | sal.pc = pc; | |
8505 | sal.section = find_pc_overlay (pc); | |
8506 | sal.explicit_pc = 1; | |
8507 | ||
a6d9a66e | 8508 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8509 | } |
c906108c | 8510 | \f |
c5aa993b | 8511 | |
c906108c SS |
8512 | /* Tell the user we have just set a breakpoint B. */ |
8513 | ||
8514 | static void | |
fba45db2 | 8515 | mention (struct breakpoint *b) |
c906108c | 8516 | { |
348d480f | 8517 | b->ops->print_mention (b); |
5922befa LM |
8518 | if (current_uiout->is_mi_like_p ()) |
8519 | return; | |
8520 | printf_filtered ("\n"); | |
c906108c | 8521 | } |
c906108c | 8522 | \f |
c5aa993b | 8523 | |
1a853c52 PA |
8524 | static int bp_loc_is_permanent (struct bp_location *loc); |
8525 | ||
0d381245 | 8526 | static struct bp_location * |
39d61571 | 8527 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8528 | const struct symtab_and_line *sal) |
8529 | { | |
8530 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8531 | CORE_ADDR adjusted_address; |
8532 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8533 | ||
8534 | if (loc_gdbarch == NULL) | |
8535 | loc_gdbarch = b->gdbarch; | |
8536 | ||
8537 | /* Adjust the breakpoint's address prior to allocating a location. | |
8538 | Once we call allocate_bp_location(), that mostly uninitialized | |
8539 | location will be placed on the location chain. Adjustment of the | |
8540 | breakpoint may cause target_read_memory() to be called and we do | |
8541 | not want its scan of the location chain to find a breakpoint and | |
8542 | location that's only been partially initialized. */ | |
8543 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8544 | sal->pc, b->type); | |
0d381245 | 8545 | |
d30113d4 | 8546 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8547 | loc = allocate_bp_location (b); |
d30113d4 JK |
8548 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8549 | tmp = &((*tmp)->next)) | |
0d381245 | 8550 | ; |
d30113d4 | 8551 | loc->next = *tmp; |
0d381245 | 8552 | *tmp = loc; |
3742cc8b | 8553 | |
0d381245 | 8554 | loc->requested_address = sal->pc; |
3742cc8b | 8555 | loc->address = adjusted_address; |
6c95b8df | 8556 | loc->pspace = sal->pspace; |
935676c9 | 8557 | loc->probe.prob = sal->prob; |
729662a5 | 8558 | loc->probe.objfile = sal->objfile; |
6c95b8df | 8559 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8560 | loc->section = sal->section; |
3742cc8b | 8561 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8562 | loc->line_number = sal->line; |
2f202fde | 8563 | loc->symtab = sal->symtab; |
4a27f119 | 8564 | loc->symbol = sal->symbol; |
3467ec66 PA |
8565 | loc->msymbol = sal->msymbol; |
8566 | loc->objfile = sal->objfile; | |
f8eba3c6 | 8567 | |
0ba852ab | 8568 | set_breakpoint_location_function (loc); |
1a853c52 | 8569 | |
6ae88661 LM |
8570 | /* While by definition, permanent breakpoints are already present in the |
8571 | code, we don't mark the location as inserted. Normally one would expect | |
8572 | that GDB could rely on that breakpoint instruction to stop the program, | |
8573 | thus removing the need to insert its own breakpoint, except that executing | |
8574 | the breakpoint instruction can kill the target instead of reporting a | |
8575 | SIGTRAP. E.g., on SPARC, when interrupts are disabled, executing the | |
8576 | instruction resets the CPU, so QEMU 2.0.0 for SPARC correspondingly dies | |
8577 | with "Trap 0x02 while interrupts disabled, Error state". Letting the | |
8578 | breakpoint be inserted normally results in QEMU knowing about the GDB | |
8579 | breakpoint, and thus trap before the breakpoint instruction is executed. | |
8580 | (If GDB later needs to continue execution past the permanent breakpoint, | |
8581 | it manually increments the PC, thus avoiding executing the breakpoint | |
8582 | instruction.) */ | |
1a853c52 | 8583 | if (bp_loc_is_permanent (loc)) |
6ae88661 | 8584 | loc->permanent = 1; |
1a853c52 | 8585 | |
0d381245 VP |
8586 | return loc; |
8587 | } | |
514f746b AR |
8588 | \f |
8589 | ||
1cf4d951 | 8590 | /* See breakpoint.h. */ |
514f746b | 8591 | |
1cf4d951 PA |
8592 | int |
8593 | program_breakpoint_here_p (struct gdbarch *gdbarch, CORE_ADDR address) | |
514f746b AR |
8594 | { |
8595 | int len; | |
8596 | CORE_ADDR addr; | |
1afeeb75 | 8597 | const gdb_byte *bpoint; |
514f746b AR |
8598 | gdb_byte *target_mem; |
8599 | ||
1cf4d951 PA |
8600 | addr = address; |
8601 | bpoint = gdbarch_breakpoint_from_pc (gdbarch, &addr, &len); | |
8602 | ||
8603 | /* Software breakpoints unsupported? */ | |
8604 | if (bpoint == NULL) | |
8605 | return 0; | |
8606 | ||
224c3ddb | 8607 | target_mem = (gdb_byte *) alloca (len); |
1cf4d951 PA |
8608 | |
8609 | /* Enable the automatic memory restoration from breakpoints while | |
8610 | we read the memory. Otherwise we could say about our temporary | |
8611 | breakpoints they are permanent. */ | |
cb85b21b TT |
8612 | scoped_restore restore_memory |
8613 | = make_scoped_restore_show_memory_breakpoints (0); | |
1cf4d951 PA |
8614 | |
8615 | if (target_read_memory (address, target_mem, len) == 0 | |
8616 | && memcmp (target_mem, bpoint, len) == 0) | |
cb85b21b | 8617 | return 1; |
1cf4d951 | 8618 | |
cb85b21b | 8619 | return 0; |
1cf4d951 PA |
8620 | } |
8621 | ||
8622 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8623 | return 0 otherwise. */ | |
8624 | ||
8625 | static int | |
8626 | bp_loc_is_permanent (struct bp_location *loc) | |
8627 | { | |
514f746b AR |
8628 | gdb_assert (loc != NULL); |
8629 | ||
cb1e4e32 PA |
8630 | /* If we have a non-breakpoint-backed catchpoint or a software |
8631 | watchpoint, just return 0. We should not attempt to read from | |
8632 | the addresses the locations of these breakpoint types point to. | |
8633 | program_breakpoint_here_p, below, will attempt to read | |
244558af | 8634 | memory. */ |
cb1e4e32 | 8635 | if (!bl_address_is_meaningful (loc)) |
244558af LM |
8636 | return 0; |
8637 | ||
5ed8105e | 8638 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 8639 | switch_to_program_space_and_thread (loc->pspace); |
5ed8105e | 8640 | return program_breakpoint_here_p (loc->gdbarch, loc->address); |
514f746b AR |
8641 | } |
8642 | ||
e7e0cddf SS |
8643 | /* Build a command list for the dprintf corresponding to the current |
8644 | settings of the dprintf style options. */ | |
8645 | ||
8646 | static void | |
8647 | update_dprintf_command_list (struct breakpoint *b) | |
8648 | { | |
8649 | char *dprintf_args = b->extra_string; | |
8650 | char *printf_line = NULL; | |
8651 | ||
8652 | if (!dprintf_args) | |
8653 | return; | |
8654 | ||
8655 | dprintf_args = skip_spaces (dprintf_args); | |
8656 | ||
8657 | /* Allow a comma, as it may have terminated a location, but don't | |
8658 | insist on it. */ | |
8659 | if (*dprintf_args == ',') | |
8660 | ++dprintf_args; | |
8661 | dprintf_args = skip_spaces (dprintf_args); | |
8662 | ||
8663 | if (*dprintf_args != '"') | |
8664 | error (_("Bad format string, missing '\"'.")); | |
8665 | ||
d3ce09f5 | 8666 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8667 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8668 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8669 | { |
8670 | if (!dprintf_function) | |
8671 | error (_("No function supplied for dprintf call")); | |
8672 | ||
8673 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8674 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8675 | dprintf_function, | |
8676 | dprintf_channel, | |
8677 | dprintf_args); | |
8678 | else | |
8679 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8680 | dprintf_function, | |
8681 | dprintf_args); | |
8682 | } | |
d3ce09f5 SS |
8683 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8684 | { | |
8685 | if (target_can_run_breakpoint_commands ()) | |
8686 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8687 | else | |
8688 | { | |
8689 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8690 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8691 | } | |
8692 | } | |
e7e0cddf SS |
8693 | else |
8694 | internal_error (__FILE__, __LINE__, | |
8695 | _("Invalid dprintf style.")); | |
8696 | ||
f28045c2 | 8697 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8698 | |
12973681 TT |
8699 | /* Manufacture a printf sequence. */ |
8700 | struct command_line *printf_cmd_line | |
8701 | = new struct command_line (simple_control, printf_line); | |
8702 | breakpoint_set_commands (b, counted_command_line (printf_cmd_line, | |
8703 | command_lines_deleter ())); | |
e7e0cddf SS |
8704 | } |
8705 | ||
8706 | /* Update all dprintf commands, making their command lists reflect | |
8707 | current style settings. */ | |
8708 | ||
8709 | static void | |
eb4c3f4a | 8710 | update_dprintf_commands (const char *args, int from_tty, |
e7e0cddf SS |
8711 | struct cmd_list_element *c) |
8712 | { | |
8713 | struct breakpoint *b; | |
8714 | ||
8715 | ALL_BREAKPOINTS (b) | |
8716 | { | |
8717 | if (b->type == bp_dprintf) | |
8718 | update_dprintf_command_list (b); | |
8719 | } | |
8720 | } | |
c3f6f71d | 8721 | |
f00aae0f KS |
8722 | /* Create a breakpoint with SAL as location. Use LOCATION |
8723 | as a description of the location, and COND_STRING | |
b35a8b2f DE |
8724 | as condition expression. If LOCATION is NULL then create an |
8725 | "address location" from the address in the SAL. */ | |
018d34a4 VP |
8726 | |
8727 | static void | |
d9b3f62e | 8728 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
6c5b2ebe | 8729 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8730 | event_location_up &&location, |
e1e01040 PA |
8731 | gdb::unique_xmalloc_ptr<char> filter, |
8732 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8733 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8734 | enum bptype type, enum bpdisp disposition, |
8735 | int thread, int task, int ignore_count, | |
c0a91b2b | 8736 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8737 | int enabled, int internal, unsigned flags, |
8738 | int display_canonical) | |
018d34a4 | 8739 | { |
0d381245 | 8740 | int i; |
018d34a4 VP |
8741 | |
8742 | if (type == bp_hardware_breakpoint) | |
8743 | { | |
fbbd034e AS |
8744 | int target_resources_ok; |
8745 | ||
8746 | i = hw_breakpoint_used_count (); | |
8747 | target_resources_ok = | |
8748 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8749 | i + 1, 0); |
8750 | if (target_resources_ok == 0) | |
8751 | error (_("No hardware breakpoint support in the target.")); | |
8752 | else if (target_resources_ok < 0) | |
8753 | error (_("Hardware breakpoints used exceeds limit.")); | |
8754 | } | |
8755 | ||
6c5b2ebe | 8756 | gdb_assert (!sals.empty ()); |
6c95b8df | 8757 | |
6c5b2ebe | 8758 | for (const auto &sal : sals) |
0d381245 | 8759 | { |
0d381245 VP |
8760 | struct bp_location *loc; |
8761 | ||
8762 | if (from_tty) | |
5af949e3 UW |
8763 | { |
8764 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8765 | if (!loc_gdbarch) | |
8766 | loc_gdbarch = gdbarch; | |
8767 | ||
8768 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8769 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8770 | } |
0d381245 | 8771 | |
6c5b2ebe | 8772 | if (&sal == &sals[0]) |
0d381245 | 8773 | { |
d9b3f62e | 8774 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8775 | b->thread = thread; |
4a306c9a | 8776 | b->task = task; |
855a6e68 | 8777 | |
e1e01040 PA |
8778 | b->cond_string = cond_string.release (); |
8779 | b->extra_string = extra_string.release (); | |
0d381245 | 8780 | b->ignore_count = ignore_count; |
41447f92 | 8781 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8782 | b->disposition = disposition; |
6c95b8df | 8783 | |
44f238bb PA |
8784 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8785 | b->loc->inserted = 1; | |
8786 | ||
0fb4aa4b PA |
8787 | if (type == bp_static_tracepoint) |
8788 | { | |
d9b3f62e | 8789 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8790 | struct static_tracepoint_marker marker; |
8791 | ||
983af33b | 8792 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8793 | { |
8794 | /* We already know the marker exists, otherwise, we | |
8795 | wouldn't see a sal for it. */ | |
d28cd78a TT |
8796 | const char *p |
8797 | = &event_location_to_string (b->location.get ())[3]; | |
f00aae0f | 8798 | const char *endp; |
0fb4aa4b | 8799 | |
f1735a53 | 8800 | p = skip_spaces (p); |
0fb4aa4b | 8801 | |
f1735a53 | 8802 | endp = skip_to_space (p); |
0fb4aa4b | 8803 | |
5d9310c4 | 8804 | t->static_trace_marker_id.assign (p, endp - p); |
0fb4aa4b | 8805 | |
3e43a32a MS |
8806 | printf_filtered (_("Probed static tracepoint " |
8807 | "marker \"%s\"\n"), | |
5d9310c4 | 8808 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8809 | } |
8810 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8811 | { | |
5d9310c4 | 8812 | t->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b | 8813 | |
3e43a32a MS |
8814 | printf_filtered (_("Probed static tracepoint " |
8815 | "marker \"%s\"\n"), | |
5d9310c4 | 8816 | t->static_trace_marker_id.c_str ()); |
0fb4aa4b PA |
8817 | } |
8818 | else | |
3e43a32a MS |
8819 | warning (_("Couldn't determine the static " |
8820 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8821 | } |
8822 | ||
0d381245 VP |
8823 | loc = b->loc; |
8824 | } | |
8825 | else | |
018d34a4 | 8826 | { |
39d61571 | 8827 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8828 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8829 | loc->inserted = 1; | |
0d381245 VP |
8830 | } |
8831 | ||
8832 | if (b->cond_string) | |
8833 | { | |
bbc13ae3 KS |
8834 | const char *arg = b->cond_string; |
8835 | ||
1bb9788d TT |
8836 | loc->cond = parse_exp_1 (&arg, loc->address, |
8837 | block_for_pc (loc->address), 0); | |
0d381245 | 8838 | if (*arg) |
588ae58c | 8839 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8840 | } |
e7e0cddf SS |
8841 | |
8842 | /* Dynamic printf requires and uses additional arguments on the | |
8843 | command line, otherwise it's an error. */ | |
8844 | if (type == bp_dprintf) | |
8845 | { | |
8846 | if (b->extra_string) | |
8847 | update_dprintf_command_list (b); | |
8848 | else | |
8849 | error (_("Format string required")); | |
8850 | } | |
8851 | else if (b->extra_string) | |
588ae58c | 8852 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8853 | } |
018d34a4 | 8854 | |
56435ebe | 8855 | b->display_canonical = display_canonical; |
f00aae0f | 8856 | if (location != NULL) |
d28cd78a | 8857 | b->location = std::move (location); |
018d34a4 | 8858 | else |
d28cd78a | 8859 | b->location = new_address_location (b->loc->address, NULL, 0); |
c0e8dcd8 | 8860 | b->filter = std::move (filter); |
d9b3f62e | 8861 | } |
018d34a4 | 8862 | |
d9b3f62e PA |
8863 | static void |
8864 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
6c5b2ebe | 8865 | gdb::array_view<const symtab_and_line> sals, |
ffc2605c | 8866 | event_location_up &&location, |
e1e01040 PA |
8867 | gdb::unique_xmalloc_ptr<char> filter, |
8868 | gdb::unique_xmalloc_ptr<char> cond_string, | |
8869 | gdb::unique_xmalloc_ptr<char> extra_string, | |
d9b3f62e PA |
8870 | enum bptype type, enum bpdisp disposition, |
8871 | int thread, int task, int ignore_count, | |
c0a91b2b | 8872 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8873 | int enabled, int internal, unsigned flags, |
8874 | int display_canonical) | |
d9b3f62e | 8875 | { |
a5e364af | 8876 | std::unique_ptr<breakpoint> b = new_breakpoint_from_type (type); |
d9b3f62e | 8877 | |
a5e364af | 8878 | init_breakpoint_sal (b.get (), gdbarch, |
ffc2605c | 8879 | sals, std::move (location), |
e1e01040 PA |
8880 | std::move (filter), |
8881 | std::move (cond_string), | |
8882 | std::move (extra_string), | |
d9b3f62e PA |
8883 | type, disposition, |
8884 | thread, task, ignore_count, | |
8885 | ops, from_tty, | |
44f238bb PA |
8886 | enabled, internal, flags, |
8887 | display_canonical); | |
d9b3f62e | 8888 | |
b270e6f9 | 8889 | install_breakpoint (internal, std::move (b), 0); |
018d34a4 VP |
8890 | } |
8891 | ||
8892 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8893 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8894 | value. COND_STRING, if not NULL, specified the condition to be | |
8895 | used for all breakpoints. Essentially the only case where | |
8896 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8897 | function. In that case, it's still not possible to specify | |
8898 | separate conditions for different overloaded functions, so | |
8899 | we take just a single condition string. | |
8900 | ||
c3f6f71d | 8901 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8902 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8903 | array contents). If the function fails (error() is called), the |
8904 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8905 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8906 | |
8907 | static void | |
8cdf0e15 | 8908 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8909 | struct linespec_result *canonical, |
e1e01040 PA |
8910 | gdb::unique_xmalloc_ptr<char> cond_string, |
8911 | gdb::unique_xmalloc_ptr<char> extra_string, | |
8cdf0e15 VP |
8912 | enum bptype type, enum bpdisp disposition, |
8913 | int thread, int task, int ignore_count, | |
c0a91b2b | 8914 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8915 | int enabled, int internal, unsigned flags) |
c906108c | 8916 | { |
f8eba3c6 | 8917 | if (canonical->pre_expanded) |
6c5b2ebe | 8918 | gdb_assert (canonical->lsals.size () == 1); |
f8eba3c6 | 8919 | |
6c5b2ebe | 8920 | for (const auto &lsal : canonical->lsals) |
c3f6f71d | 8921 | { |
f00aae0f | 8922 | /* Note that 'location' can be NULL in the case of a plain |
f8eba3c6 | 8923 | 'break', without arguments. */ |
ffc2605c | 8924 | event_location_up location |
f00aae0f | 8925 | = (canonical->location != NULL |
8e9e35b1 | 8926 | ? copy_event_location (canonical->location.get ()) : NULL); |
e1e01040 | 8927 | gdb::unique_xmalloc_ptr<char> filter_string |
6c5b2ebe | 8928 | (lsal.canonical != NULL ? xstrdup (lsal.canonical) : NULL); |
0d381245 | 8929 | |
6c5b2ebe | 8930 | create_breakpoint_sal (gdbarch, lsal.sals, |
ffc2605c | 8931 | std::move (location), |
e1e01040 PA |
8932 | std::move (filter_string), |
8933 | std::move (cond_string), | |
8934 | std::move (extra_string), | |
e7e0cddf | 8935 | type, disposition, |
84f4c1fe | 8936 | thread, task, ignore_count, ops, |
44f238bb | 8937 | from_tty, enabled, internal, flags, |
56435ebe | 8938 | canonical->special_display); |
c3f6f71d | 8939 | } |
c3f6f71d | 8940 | } |
c906108c | 8941 | |
f00aae0f | 8942 | /* Parse LOCATION which is assumed to be a SAL specification possibly |
c3f6f71d | 8943 | followed by conditionals. On return, SALS contains an array of SAL |
f00aae0f KS |
8944 | addresses found. LOCATION points to the end of the SAL (for |
8945 | linespec locations). | |
9998af43 TJB |
8946 | |
8947 | The array and the line spec strings are allocated on the heap, it is | |
8948 | the caller's responsibility to free them. */ | |
c906108c | 8949 | |
b9362cc7 | 8950 | static void |
f00aae0f | 8951 | parse_breakpoint_sals (const struct event_location *location, |
58438ac1 | 8952 | struct linespec_result *canonical) |
c3f6f71d | 8953 | { |
f00aae0f KS |
8954 | struct symtab_and_line cursal; |
8955 | ||
8956 | if (event_location_type (location) == LINESPEC_LOCATION) | |
8957 | { | |
a20714ff | 8958 | const char *spec = get_linespec_location (location)->spec_string; |
f00aae0f | 8959 | |
a20714ff | 8960 | if (spec == NULL) |
f00aae0f KS |
8961 | { |
8962 | /* The last displayed codepoint, if it's valid, is our default | |
8963 | breakpoint address. */ | |
8964 | if (last_displayed_sal_is_valid ()) | |
8965 | { | |
f00aae0f KS |
8966 | /* Set sal's pspace, pc, symtab, and line to the values |
8967 | corresponding to the last call to print_frame_info. | |
8968 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
8969 | as the breakpoint line number is inappropriate otherwise. | |
8970 | find_pc_line would adjust PC, re-set it back. */ | |
51abb421 PA |
8971 | symtab_and_line sal = get_last_displayed_sal (); |
8972 | CORE_ADDR pc = sal.pc; | |
8973 | ||
f00aae0f KS |
8974 | sal = find_pc_line (pc, 0); |
8975 | ||
8976 | /* "break" without arguments is equivalent to "break *PC" | |
8977 | where PC is the last displayed codepoint's address. So | |
8978 | make sure to set sal.explicit_pc to prevent GDB from | |
8979 | trying to expand the list of sals to include all other | |
8980 | instances with the same symtab and line. */ | |
8981 | sal.pc = pc; | |
8982 | sal.explicit_pc = 1; | |
8983 | ||
6c5b2ebe PA |
8984 | struct linespec_sals lsal; |
8985 | lsal.sals = {sal}; | |
f00aae0f KS |
8986 | lsal.canonical = NULL; |
8987 | ||
6c5b2ebe | 8988 | canonical->lsals.push_back (std::move (lsal)); |
f00aae0f KS |
8989 | return; |
8990 | } | |
8991 | else | |
8992 | error (_("No default breakpoint address now.")); | |
c906108c | 8993 | } |
c906108c | 8994 | } |
f00aae0f KS |
8995 | |
8996 | /* Force almost all breakpoints to be in terms of the | |
8997 | current_source_symtab (which is decode_line_1's default). | |
8998 | This should produce the results we want almost all of the | |
8999 | time while leaving default_breakpoint_* alone. | |
9000 | ||
9001 | ObjC: However, don't match an Objective-C method name which | |
9002 | may have a '+' or '-' succeeded by a '['. */ | |
9003 | cursal = get_current_source_symtab_and_line (); | |
9004 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9005 | { |
a20714ff | 9006 | const char *spec = NULL; |
cc80f267 | 9007 | |
f00aae0f | 9008 | if (event_location_type (location) == LINESPEC_LOCATION) |
a20714ff | 9009 | spec = get_linespec_location (location)->spec_string; |
cc80f267 | 9010 | |
f00aae0f | 9011 | if (!cursal.symtab |
a20714ff PA |
9012 | || (spec != NULL |
9013 | && strchr ("+-", spec[0]) != NULL | |
9014 | && spec[1] != '[')) | |
f00aae0f | 9015 | { |
c2f4122d | 9016 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f KS |
9017 | get_last_displayed_symtab (), |
9018 | get_last_displayed_line (), | |
9019 | canonical, NULL, NULL); | |
9020 | return; | |
9021 | } | |
c906108c | 9022 | } |
f00aae0f | 9023 | |
c2f4122d | 9024 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, NULL, |
f00aae0f | 9025 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c3f6f71d | 9026 | } |
c906108c | 9027 | |
c906108c | 9028 | |
c3f6f71d | 9029 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9030 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9031 | |
b9362cc7 | 9032 | static void |
6c5b2ebe | 9033 | breakpoint_sals_to_pc (std::vector<symtab_and_line> &sals) |
c3f6f71d | 9034 | { |
6c5b2ebe PA |
9035 | for (auto &sal : sals) |
9036 | resolve_sal_pc (&sal); | |
c3f6f71d JM |
9037 | } |
9038 | ||
7a697b8d SS |
9039 | /* Fast tracepoints may have restrictions on valid locations. For |
9040 | instance, a fast tracepoint using a jump instead of a trap will | |
9041 | likely have to overwrite more bytes than a trap would, and so can | |
9042 | only be placed where the instruction is longer than the jump, or a | |
9043 | multi-instruction sequence does not have a jump into the middle of | |
9044 | it, etc. */ | |
9045 | ||
9046 | static void | |
9047 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
6c5b2ebe | 9048 | gdb::array_view<const symtab_and_line> sals) |
7a697b8d | 9049 | { |
6c5b2ebe | 9050 | for (const auto &sal : sals) |
7a697b8d | 9051 | { |
f8eba3c6 TT |
9052 | struct gdbarch *sarch; |
9053 | ||
6c5b2ebe | 9054 | sarch = get_sal_arch (sal); |
f8eba3c6 TT |
9055 | /* We fall back to GDBARCH if there is no architecture |
9056 | associated with SAL. */ | |
9057 | if (sarch == NULL) | |
9058 | sarch = gdbarch; | |
281d762b TT |
9059 | std::string msg; |
9060 | if (!gdbarch_fast_tracepoint_valid_at (sarch, sal.pc, &msg)) | |
53c3572a | 9061 | error (_("May not have a fast tracepoint at %s%s"), |
281d762b | 9062 | paddress (sarch, sal.pc), msg.c_str ()); |
7a697b8d SS |
9063 | } |
9064 | } | |
9065 | ||
018d34a4 VP |
9066 | /* Given TOK, a string specification of condition and thread, as |
9067 | accepted by the 'break' command, extract the condition | |
9068 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9069 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9070 | If no condition is found, *COND_STRING is set to NULL. |
9071 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9072 | |
9073 | static void | |
bbc13ae3 | 9074 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9075 | char **cond_string, int *thread, int *task, |
9076 | char **rest) | |
018d34a4 VP |
9077 | { |
9078 | *cond_string = NULL; | |
9079 | *thread = -1; | |
ed1d1739 KS |
9080 | *task = 0; |
9081 | *rest = NULL; | |
9082 | ||
018d34a4 VP |
9083 | while (tok && *tok) |
9084 | { | |
bbc13ae3 | 9085 | const char *end_tok; |
018d34a4 | 9086 | int toklen; |
bbc13ae3 KS |
9087 | const char *cond_start = NULL; |
9088 | const char *cond_end = NULL; | |
cc59ec59 | 9089 | |
f1735a53 | 9090 | tok = skip_spaces (tok); |
e7e0cddf SS |
9091 | |
9092 | if ((*tok == '"' || *tok == ',') && rest) | |
9093 | { | |
9094 | *rest = savestring (tok, strlen (tok)); | |
9095 | return; | |
9096 | } | |
9097 | ||
f1735a53 | 9098 | end_tok = skip_to_space (tok); |
d634f2de | 9099 | |
018d34a4 | 9100 | toklen = end_tok - tok; |
d634f2de | 9101 | |
018d34a4 VP |
9102 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9103 | { | |
9104 | tok = cond_start = end_tok + 1; | |
4d01a485 | 9105 | parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
018d34a4 | 9106 | cond_end = tok; |
d634f2de | 9107 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9108 | } |
9109 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9110 | { | |
5d5658a1 PA |
9111 | const char *tmptok; |
9112 | struct thread_info *thr; | |
d634f2de | 9113 | |
018d34a4 | 9114 | tok = end_tok + 1; |
5d5658a1 | 9115 | thr = parse_thread_id (tok, &tmptok); |
018d34a4 VP |
9116 | if (tok == tmptok) |
9117 | error (_("Junk after thread keyword.")); | |
5d5658a1 | 9118 | *thread = thr->global_num; |
bbc13ae3 | 9119 | tok = tmptok; |
018d34a4 | 9120 | } |
4a306c9a JB |
9121 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9122 | { | |
9123 | char *tmptok; | |
9124 | ||
9125 | tok = end_tok + 1; | |
bbc13ae3 | 9126 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9127 | if (tok == tmptok) |
9128 | error (_("Junk after task keyword.")); | |
9129 | if (!valid_task_id (*task)) | |
b6199126 | 9130 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9131 | tok = tmptok; |
4a306c9a | 9132 | } |
e7e0cddf SS |
9133 | else if (rest) |
9134 | { | |
9135 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9136 | return; |
e7e0cddf | 9137 | } |
018d34a4 VP |
9138 | else |
9139 | error (_("Junk at end of arguments.")); | |
9140 | } | |
9141 | } | |
9142 | ||
0fb4aa4b PA |
9143 | /* Decode a static tracepoint marker spec. */ |
9144 | ||
6c5b2ebe | 9145 | static std::vector<symtab_and_line> |
f00aae0f | 9146 | decode_static_tracepoint_spec (const char **arg_p) |
0fb4aa4b | 9147 | { |
f00aae0f KS |
9148 | const char *p = &(*arg_p)[3]; |
9149 | const char *endp; | |
0fb4aa4b | 9150 | |
f1735a53 | 9151 | p = skip_spaces (p); |
0fb4aa4b | 9152 | |
f1735a53 | 9153 | endp = skip_to_space (p); |
0fb4aa4b | 9154 | |
81b1e71c | 9155 | std::string marker_str (p, endp - p); |
0fb4aa4b | 9156 | |
5d9310c4 SM |
9157 | std::vector<static_tracepoint_marker> markers |
9158 | = target_static_tracepoint_markers_by_strid (marker_str.c_str ()); | |
9159 | if (markers.empty ()) | |
81b1e71c TT |
9160 | error (_("No known static tracepoint marker named %s"), |
9161 | marker_str.c_str ()); | |
0fb4aa4b | 9162 | |
6c5b2ebe | 9163 | std::vector<symtab_and_line> sals; |
5d9310c4 | 9164 | sals.reserve (markers.size ()); |
0fb4aa4b | 9165 | |
5d9310c4 | 9166 | for (const static_tracepoint_marker &marker : markers) |
0fb4aa4b | 9167 | { |
5d9310c4 SM |
9168 | symtab_and_line sal = find_pc_line (marker.address, 0); |
9169 | sal.pc = marker.address; | |
6c5b2ebe | 9170 | sals.push_back (sal); |
5d9310c4 | 9171 | } |
0fb4aa4b | 9172 | |
0fb4aa4b PA |
9173 | *arg_p = endp; |
9174 | return sals; | |
9175 | } | |
9176 | ||
bac7c5cf GB |
9177 | /* Returns the breakpoint ops appropriate for use with with LOCATION_TYPE and |
9178 | according to IS_TRACEPOINT. */ | |
9179 | ||
9180 | static const struct breakpoint_ops * | |
9181 | breakpoint_ops_for_event_location_type (enum event_location_type location_type, | |
9182 | bool is_tracepoint) | |
9183 | { | |
9184 | if (is_tracepoint) | |
9185 | { | |
9186 | if (location_type == PROBE_LOCATION) | |
9187 | return &tracepoint_probe_breakpoint_ops; | |
9188 | else | |
9189 | return &tracepoint_breakpoint_ops; | |
9190 | } | |
9191 | else | |
9192 | { | |
9193 | if (location_type == PROBE_LOCATION) | |
9194 | return &bkpt_probe_breakpoint_ops; | |
9195 | else | |
9196 | return &bkpt_breakpoint_ops; | |
9197 | } | |
9198 | } | |
9199 | ||
9200 | /* See breakpoint.h. */ | |
9201 | ||
9202 | const struct breakpoint_ops * | |
9203 | breakpoint_ops_for_event_location (const struct event_location *location, | |
9204 | bool is_tracepoint) | |
9205 | { | |
9206 | if (location != nullptr) | |
9207 | return breakpoint_ops_for_event_location_type | |
9208 | (event_location_type (location), is_tracepoint); | |
9209 | return is_tracepoint ? &tracepoint_breakpoint_ops : &bkpt_breakpoint_ops; | |
9210 | } | |
9211 | ||
f00aae0f | 9212 | /* See breakpoint.h. */ |
0101ce28 | 9213 | |
8cdf0e15 VP |
9214 | int |
9215 | create_breakpoint (struct gdbarch *gdbarch, | |
e1e01040 PA |
9216 | const struct event_location *location, |
9217 | const char *cond_string, | |
9218 | int thread, const char *extra_string, | |
f00aae0f | 9219 | int parse_extra, |
0fb4aa4b | 9220 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9221 | int ignore_count, |
9222 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9223 | const struct breakpoint_ops *ops, |
44f238bb PA |
9224 | int from_tty, int enabled, int internal, |
9225 | unsigned flags) | |
c3f6f71d | 9226 | { |
7efd8fc2 | 9227 | struct linespec_result canonical; |
0101ce28 | 9228 | int pending = 0; |
4a306c9a | 9229 | int task = 0; |
86b17b60 | 9230 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9231 | |
348d480f PA |
9232 | gdb_assert (ops != NULL); |
9233 | ||
f00aae0f KS |
9234 | /* If extra_string isn't useful, set it to NULL. */ |
9235 | if (extra_string != NULL && *extra_string == '\0') | |
9236 | extra_string = NULL; | |
9237 | ||
a70b8144 | 9238 | try |
b78a6381 | 9239 | { |
f00aae0f | 9240 | ops->create_sals_from_location (location, &canonical, type_wanted); |
b78a6381 | 9241 | } |
230d2906 | 9242 | catch (const gdb_exception_error &e) |
0101ce28 | 9243 | { |
492d29ea PA |
9244 | /* If caller is interested in rc value from parse, set |
9245 | value. */ | |
9246 | if (e.error == NOT_FOUND_ERROR) | |
0101ce28 | 9247 | { |
05ff989b AC |
9248 | /* If pending breakpoint support is turned off, throw |
9249 | error. */ | |
fa8d40ab JJ |
9250 | |
9251 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
eedc3f4f | 9252 | throw; |
723a2275 VP |
9253 | |
9254 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9255 | |
05ff989b AC |
9256 | /* If pending breakpoint support is auto query and the user |
9257 | selects no, then simply return the error code. */ | |
059fb39f | 9258 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9259 | && !nquery (_("Make %s pending on future shared library load? "), |
9260 | bptype_string (type_wanted))) | |
fd9b8c24 | 9261 | return 0; |
fa8d40ab | 9262 | |
05ff989b AC |
9263 | /* At this point, either the user was queried about setting |
9264 | a pending breakpoint and selected yes, or pending | |
9265 | breakpoint behavior is on and thus a pending breakpoint | |
9266 | is defaulted on behalf of the user. */ | |
f00aae0f | 9267 | pending = 1; |
0101ce28 | 9268 | } |
492d29ea | 9269 | else |
eedc3f4f | 9270 | throw; |
0101ce28 | 9271 | } |
492d29ea | 9272 | |
6c5b2ebe | 9273 | if (!pending && canonical.lsals.empty ()) |
492d29ea | 9274 | return 0; |
c3f6f71d | 9275 | |
c3f6f71d JM |
9276 | /* Resolve all line numbers to PC's and verify that the addresses |
9277 | are ok for the target. */ | |
0101ce28 | 9278 | if (!pending) |
f8eba3c6 | 9279 | { |
6c5b2ebe PA |
9280 | for (auto &lsal : canonical.lsals) |
9281 | breakpoint_sals_to_pc (lsal.sals); | |
f8eba3c6 | 9282 | } |
c3f6f71d | 9283 | |
7a697b8d | 9284 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9285 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 | 9286 | { |
6c5b2ebe PA |
9287 | for (const auto &lsal : canonical.lsals) |
9288 | check_fast_tracepoint_sals (gdbarch, lsal.sals); | |
f8eba3c6 | 9289 | } |
7a697b8d | 9290 | |
c3f6f71d JM |
9291 | /* Verify that condition can be parsed, before setting any |
9292 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9293 | breakpoint. */ |
0101ce28 | 9294 | if (!pending) |
c3f6f71d | 9295 | { |
e1e01040 PA |
9296 | gdb::unique_xmalloc_ptr<char> cond_string_copy; |
9297 | gdb::unique_xmalloc_ptr<char> extra_string_copy; | |
9298 | ||
f00aae0f | 9299 | if (parse_extra) |
72b2ff0e | 9300 | { |
0878d0fa | 9301 | char *rest; |
e1e01040 | 9302 | char *cond; |
52d361e1 | 9303 | |
6c5b2ebe | 9304 | const linespec_sals &lsal = canonical.lsals[0]; |
52d361e1 | 9305 | |
0878d0fa YQ |
9306 | /* Here we only parse 'arg' to separate condition |
9307 | from thread number, so parsing in context of first | |
9308 | sal is OK. When setting the breakpoint we'll | |
9309 | re-parse it in context of each sal. */ | |
9310 | ||
6c5b2ebe | 9311 | find_condition_and_thread (extra_string, lsal.sals[0].pc, |
e1e01040 PA |
9312 | &cond, &thread, &task, &rest); |
9313 | cond_string_copy.reset (cond); | |
9314 | extra_string_copy.reset (rest); | |
72b2ff0e | 9315 | } |
2f069f6f | 9316 | else |
72b2ff0e | 9317 | { |
f00aae0f KS |
9318 | if (type_wanted != bp_dprintf |
9319 | && extra_string != NULL && *extra_string != '\0') | |
9320 | error (_("Garbage '%s' at end of location"), extra_string); | |
0878d0fa YQ |
9321 | |
9322 | /* Create a private copy of condition string. */ | |
9323 | if (cond_string) | |
e1e01040 | 9324 | cond_string_copy.reset (xstrdup (cond_string)); |
0878d0fa YQ |
9325 | /* Create a private copy of any extra string. */ |
9326 | if (extra_string) | |
e1e01040 | 9327 | extra_string_copy.reset (xstrdup (extra_string)); |
72b2ff0e | 9328 | } |
0fb4aa4b | 9329 | |
52d361e1 | 9330 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e1e01040 PA |
9331 | std::move (cond_string_copy), |
9332 | std::move (extra_string_copy), | |
9333 | type_wanted, | |
d9b3f62e PA |
9334 | tempflag ? disp_del : disp_donttouch, |
9335 | thread, task, ignore_count, ops, | |
44f238bb | 9336 | from_tty, enabled, internal, flags); |
c906108c | 9337 | } |
0101ce28 JJ |
9338 | else |
9339 | { | |
a5e364af | 9340 | std::unique_ptr <breakpoint> b = new_breakpoint_from_type (type_wanted); |
bfccc43c | 9341 | |
a5e364af | 9342 | init_raw_breakpoint_without_location (b.get (), gdbarch, type_wanted, ops); |
d28cd78a | 9343 | b->location = copy_event_location (location); |
bfccc43c | 9344 | |
f00aae0f KS |
9345 | if (parse_extra) |
9346 | b->cond_string = NULL; | |
e12c7713 MK |
9347 | else |
9348 | { | |
9349 | /* Create a private copy of condition string. */ | |
e1e01040 | 9350 | b->cond_string = cond_string != NULL ? xstrdup (cond_string) : NULL; |
15630549 | 9351 | b->thread = thread; |
e12c7713 | 9352 | } |
f00aae0f KS |
9353 | |
9354 | /* Create a private copy of any extra string. */ | |
e1e01040 | 9355 | b->extra_string = extra_string != NULL ? xstrdup (extra_string) : NULL; |
0101ce28 | 9356 | b->ignore_count = ignore_count; |
0101ce28 | 9357 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9358 | b->condition_not_parsed = 1; |
41447f92 | 9359 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9360 | if ((type_wanted != bp_breakpoint |
9361 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9362 | b->pspace = current_program_space; |
8bea4e01 | 9363 | |
b270e6f9 | 9364 | install_breakpoint (internal, std::move (b), 0); |
0101ce28 JJ |
9365 | } |
9366 | ||
6c5b2ebe | 9367 | if (canonical.lsals.size () > 1) |
95a42b64 | 9368 | { |
3e43a32a MS |
9369 | warning (_("Multiple breakpoints were set.\nUse the " |
9370 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9371 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9372 | } |
9373 | ||
44702360 | 9374 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
9375 | |
9376 | return 1; | |
c3f6f71d | 9377 | } |
c906108c | 9378 | |
348d480f | 9379 | /* Set a breakpoint. |
72b2ff0e VP |
9380 | ARG is a string describing breakpoint address, |
9381 | condition, and thread. | |
9382 | FLAG specifies if a breakpoint is hardware on, | |
9383 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9384 | and BP_TEMPFLAG. */ | |
348d480f | 9385 | |
98deb0da | 9386 | static void |
f2fc3015 | 9387 | break_command_1 (const char *arg, int flag, int from_tty) |
c3f6f71d | 9388 | { |
72b2ff0e | 9389 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9390 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9391 | ? bp_hardware_breakpoint | |
9392 | : bp_breakpoint); | |
f00aae0f | 9393 | |
ffc2605c | 9394 | event_location_up location = string_to_event_location (&arg, current_language); |
bac7c5cf GB |
9395 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
9396 | (location.get (), false /* is_tracepoint */); | |
c3f6f71d | 9397 | |
8cdf0e15 | 9398 | create_breakpoint (get_current_arch (), |
ffc2605c | 9399 | location.get (), |
f00aae0f | 9400 | NULL, 0, arg, 1 /* parse arg */, |
0fb4aa4b | 9401 | tempflag, type_wanted, |
8cdf0e15 VP |
9402 | 0 /* Ignore count */, |
9403 | pending_break_support, | |
55aa24fb | 9404 | ops, |
8cdf0e15 | 9405 | from_tty, |
84f4c1fe | 9406 | 1 /* enabled */, |
44f238bb PA |
9407 | 0 /* internal */, |
9408 | 0); | |
c906108c SS |
9409 | } |
9410 | ||
c906108c SS |
9411 | /* Helper function for break_command_1 and disassemble_command. */ |
9412 | ||
9413 | void | |
fba45db2 | 9414 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9415 | { |
9416 | CORE_ADDR pc; | |
9417 | ||
9418 | if (sal->pc == 0 && sal->symtab != NULL) | |
9419 | { | |
9420 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9421 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9422 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9423 | sal->pc = pc; |
6a048695 | 9424 | |
4a64f543 MS |
9425 | /* If this SAL corresponds to a breakpoint inserted using a line |
9426 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9427 | if (sal->explicit_line) |
059acae7 | 9428 | skip_prologue_sal (sal); |
c906108c SS |
9429 | } |
9430 | ||
9431 | if (sal->section == 0 && sal->symtab != NULL) | |
9432 | { | |
346d1dfe | 9433 | const struct blockvector *bv; |
3977b71f | 9434 | const struct block *b; |
c5aa993b | 9435 | struct symbol *sym; |
c906108c | 9436 | |
43f3e411 DE |
9437 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, |
9438 | SYMTAB_COMPUNIT (sal->symtab)); | |
c906108c SS |
9439 | if (bv != NULL) |
9440 | { | |
7f0df278 | 9441 | sym = block_linkage_function (b); |
c906108c SS |
9442 | if (sym != NULL) |
9443 | { | |
eb822aa6 DE |
9444 | fixup_symbol_section (sym, SYMTAB_OBJFILE (sal->symtab)); |
9445 | sal->section = SYMBOL_OBJ_SECTION (SYMTAB_OBJFILE (sal->symtab), | |
9446 | sym); | |
c906108c SS |
9447 | } |
9448 | else | |
9449 | { | |
4a64f543 MS |
9450 | /* It really is worthwhile to have the section, so we'll |
9451 | just have to look harder. This case can be executed | |
9452 | if we have line numbers but no functions (as can | |
9453 | happen in assembly source). */ | |
c906108c | 9454 | |
5ed8105e | 9455 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
6c95b8df | 9456 | switch_to_program_space_and_thread (sal->pspace); |
c906108c | 9457 | |
5ed8105e | 9458 | bound_minimal_symbol msym = lookup_minimal_symbol_by_pc (sal->pc); |
7cbd4a93 | 9459 | if (msym.minsym) |
efd66ac6 | 9460 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
c906108c SS |
9461 | } |
9462 | } | |
9463 | } | |
9464 | } | |
9465 | ||
9466 | void | |
0b39b52e | 9467 | break_command (const char *arg, int from_tty) |
c906108c | 9468 | { |
db107f19 | 9469 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9470 | } |
9471 | ||
c906108c | 9472 | void |
0b39b52e | 9473 | tbreak_command (const char *arg, int from_tty) |
c906108c | 9474 | { |
db107f19 | 9475 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9476 | } |
9477 | ||
c906108c | 9478 | static void |
0b39b52e | 9479 | hbreak_command (const char *arg, int from_tty) |
c906108c | 9480 | { |
db107f19 | 9481 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9482 | } |
9483 | ||
9484 | static void | |
0b39b52e | 9485 | thbreak_command (const char *arg, int from_tty) |
c906108c | 9486 | { |
db107f19 | 9487 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9488 | } |
9489 | ||
9490 | static void | |
ee7ddd71 | 9491 | stop_command (const char *arg, int from_tty) |
c906108c | 9492 | { |
a3f17187 | 9493 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9494 | Usage: stop in <function | address>\n\ |
a3f17187 | 9495 | stop at <line>\n")); |
c906108c SS |
9496 | } |
9497 | ||
9498 | static void | |
4495129a | 9499 | stopin_command (const char *arg, int from_tty) |
c906108c SS |
9500 | { |
9501 | int badInput = 0; | |
9502 | ||
cafb3438 | 9503 | if (arg == NULL) |
c906108c SS |
9504 | badInput = 1; |
9505 | else if (*arg != '*') | |
9506 | { | |
4495129a | 9507 | const char *argptr = arg; |
c906108c SS |
9508 | int hasColon = 0; |
9509 | ||
4a64f543 | 9510 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9511 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9512 | function/method name. */ |
c906108c | 9513 | while (*argptr && !hasColon) |
c5aa993b JM |
9514 | { |
9515 | hasColon = (*argptr == ':'); | |
9516 | argptr++; | |
9517 | } | |
c906108c SS |
9518 | |
9519 | if (hasColon) | |
c5aa993b | 9520 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9521 | else |
c5aa993b | 9522 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9523 | } |
9524 | ||
9525 | if (badInput) | |
a3f17187 | 9526 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9527 | else |
db107f19 | 9528 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9529 | } |
9530 | ||
9531 | static void | |
4495129a | 9532 | stopat_command (const char *arg, int from_tty) |
c906108c SS |
9533 | { |
9534 | int badInput = 0; | |
9535 | ||
cafb3438 | 9536 | if (arg == NULL || *arg == '*') /* no line number */ |
c906108c SS |
9537 | badInput = 1; |
9538 | else | |
9539 | { | |
4495129a | 9540 | const char *argptr = arg; |
c906108c SS |
9541 | int hasColon = 0; |
9542 | ||
4a64f543 MS |
9543 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9544 | it is probably a line number. */ | |
c906108c | 9545 | while (*argptr && !hasColon) |
c5aa993b JM |
9546 | { |
9547 | hasColon = (*argptr == ':'); | |
9548 | argptr++; | |
9549 | } | |
c906108c SS |
9550 | |
9551 | if (hasColon) | |
c5aa993b | 9552 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9553 | else |
c5aa993b | 9554 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9555 | } |
9556 | ||
9557 | if (badInput) | |
65e65158 | 9558 | printf_filtered (_("Usage: stop at LINE\n")); |
c906108c | 9559 | else |
db107f19 | 9560 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9561 | } |
9562 | ||
e7e0cddf SS |
9563 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9564 | with a prewired command list consisting of a single output command, | |
9565 | built from extra arguments supplied on the dprintf command | |
9566 | line. */ | |
9567 | ||
da821c7b | 9568 | static void |
0b39b52e | 9569 | dprintf_command (const char *arg, int from_tty) |
e7e0cddf | 9570 | { |
ffc2605c | 9571 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f KS |
9572 | |
9573 | /* If non-NULL, ARG should have been advanced past the location; | |
9574 | the next character must be ','. */ | |
9575 | if (arg != NULL) | |
9576 | { | |
9577 | if (arg[0] != ',' || arg[1] == '\0') | |
9578 | error (_("Format string required")); | |
9579 | else | |
9580 | { | |
9581 | /* Skip the comma. */ | |
9582 | ++arg; | |
9583 | } | |
9584 | } | |
9585 | ||
e7e0cddf | 9586 | create_breakpoint (get_current_arch (), |
ffc2605c | 9587 | location.get (), |
f00aae0f | 9588 | NULL, 0, arg, 1 /* parse arg */, |
e7e0cddf SS |
9589 | 0, bp_dprintf, |
9590 | 0 /* Ignore count */, | |
9591 | pending_break_support, | |
9592 | &dprintf_breakpoint_ops, | |
9593 | from_tty, | |
9594 | 1 /* enabled */, | |
9595 | 0 /* internal */, | |
9596 | 0); | |
9597 | } | |
9598 | ||
d3ce09f5 | 9599 | static void |
0b39b52e | 9600 | agent_printf_command (const char *arg, int from_tty) |
d3ce09f5 SS |
9601 | { |
9602 | error (_("May only run agent-printf on the target")); | |
9603 | } | |
9604 | ||
f1310107 TJB |
9605 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9606 | ranged breakpoints. */ | |
9607 | ||
9608 | static int | |
9609 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
bd522513 | 9610 | const address_space *aspace, |
09ac7c10 TT |
9611 | CORE_ADDR bp_addr, |
9612 | const struct target_waitstatus *ws) | |
f1310107 | 9613 | { |
09ac7c10 | 9614 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9615 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9616 | return 0; |
9617 | ||
f1310107 TJB |
9618 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9619 | bl->length, aspace, bp_addr); | |
9620 | } | |
9621 | ||
9622 | /* Implement the "resources_needed" breakpoint_ops method for | |
9623 | ranged breakpoints. */ | |
9624 | ||
9625 | static int | |
9626 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9627 | { | |
9628 | return target_ranged_break_num_registers (); | |
9629 | } | |
9630 | ||
9631 | /* Implement the "print_it" breakpoint_ops method for | |
9632 | ranged breakpoints. */ | |
9633 | ||
9634 | static enum print_stop_action | |
348d480f | 9635 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9636 | { |
348d480f | 9637 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9638 | struct bp_location *bl = b->loc; |
79a45e25 | 9639 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9640 | |
9641 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9642 | ||
9643 | /* Ranged breakpoints have only one location. */ | |
9644 | gdb_assert (bl && bl->next == NULL); | |
9645 | ||
9646 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
9647 | |
9648 | maybe_print_thread_hit_breakpoint (uiout); | |
9649 | ||
f1310107 | 9650 | if (b->disposition == disp_del) |
112e8700 | 9651 | uiout->text ("Temporary ranged breakpoint "); |
f1310107 | 9652 | else |
112e8700 SM |
9653 | uiout->text ("Ranged breakpoint "); |
9654 | if (uiout->is_mi_like_p ()) | |
f1310107 | 9655 | { |
112e8700 | 9656 | uiout->field_string ("reason", |
f1310107 | 9657 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 9658 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
f1310107 | 9659 | } |
381befee | 9660 | uiout->field_signed ("bkptno", b->number); |
112e8700 | 9661 | uiout->text (", "); |
f1310107 TJB |
9662 | |
9663 | return PRINT_SRC_AND_LOC; | |
9664 | } | |
9665 | ||
9666 | /* Implement the "print_one" breakpoint_ops method for | |
9667 | ranged breakpoints. */ | |
9668 | ||
9669 | static void | |
9670 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9671 | struct bp_location **last_loc) | |
9672 | { | |
9673 | struct bp_location *bl = b->loc; | |
9674 | struct value_print_options opts; | |
79a45e25 | 9675 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9676 | |
9677 | /* Ranged breakpoints have only one location. */ | |
9678 | gdb_assert (bl && bl->next == NULL); | |
9679 | ||
9680 | get_user_print_options (&opts); | |
9681 | ||
9682 | if (opts.addressprint) | |
9683 | /* We don't print the address range here, it will be printed later | |
9684 | by print_one_detail_ranged_breakpoint. */ | |
112e8700 | 9685 | uiout->field_skip ("addr"); |
f1310107 TJB |
9686 | annotate_field (5); |
9687 | print_breakpoint_location (b, bl); | |
9688 | *last_loc = bl; | |
9689 | } | |
9690 | ||
9691 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9692 | ranged breakpoints. */ | |
9693 | ||
9694 | static void | |
9695 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9696 | struct ui_out *uiout) | |
9697 | { | |
9698 | CORE_ADDR address_start, address_end; | |
9699 | struct bp_location *bl = b->loc; | |
d7e74731 | 9700 | string_file stb; |
f1310107 TJB |
9701 | |
9702 | gdb_assert (bl); | |
9703 | ||
9704 | address_start = bl->address; | |
9705 | address_end = address_start + bl->length - 1; | |
9706 | ||
112e8700 | 9707 | uiout->text ("\taddress range: "); |
d7e74731 PA |
9708 | stb.printf ("[%s, %s]", |
9709 | print_core_address (bl->gdbarch, address_start), | |
9710 | print_core_address (bl->gdbarch, address_end)); | |
112e8700 SM |
9711 | uiout->field_stream ("addr", stb); |
9712 | uiout->text ("\n"); | |
f1310107 TJB |
9713 | } |
9714 | ||
9715 | /* Implement the "print_mention" breakpoint_ops method for | |
9716 | ranged breakpoints. */ | |
9717 | ||
9718 | static void | |
9719 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9720 | { | |
9721 | struct bp_location *bl = b->loc; | |
79a45e25 | 9722 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9723 | |
9724 | gdb_assert (bl); | |
9725 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9726 | ||
2d33446d TT |
9727 | uiout->message (_("Hardware assisted ranged breakpoint %d from %s to %s."), |
9728 | b->number, paddress (bl->gdbarch, bl->address), | |
9729 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
f1310107 TJB |
9730 | } |
9731 | ||
9732 | /* Implement the "print_recreate" breakpoint_ops method for | |
9733 | ranged breakpoints. */ | |
9734 | ||
9735 | static void | |
9736 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9737 | { | |
f00aae0f | 9738 | fprintf_unfiltered (fp, "break-range %s, %s", |
d28cd78a TT |
9739 | event_location_to_string (b->location.get ()), |
9740 | event_location_to_string (b->location_range_end.get ())); | |
d9b3f62e | 9741 | print_recreate_thread (b, fp); |
f1310107 TJB |
9742 | } |
9743 | ||
9744 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9745 | ||
2060206e | 9746 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9747 | |
9748 | /* Find the address where the end of the breakpoint range should be | |
9749 | placed, given the SAL of the end of the range. This is so that if | |
9750 | the user provides a line number, the end of the range is set to the | |
9751 | last instruction of the given line. */ | |
9752 | ||
9753 | static CORE_ADDR | |
9754 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9755 | { | |
9756 | CORE_ADDR end; | |
9757 | ||
9758 | /* If the user provided a PC value, use it. Otherwise, | |
9759 | find the address of the end of the given location. */ | |
9760 | if (sal.explicit_pc) | |
9761 | end = sal.pc; | |
9762 | else | |
9763 | { | |
9764 | int ret; | |
9765 | CORE_ADDR start; | |
9766 | ||
9767 | ret = find_line_pc_range (sal, &start, &end); | |
9768 | if (!ret) | |
9769 | error (_("Could not find location of the end of the range.")); | |
9770 | ||
9771 | /* find_line_pc_range returns the start of the next line. */ | |
9772 | end--; | |
9773 | } | |
9774 | ||
9775 | return end; | |
9776 | } | |
9777 | ||
9778 | /* Implement the "break-range" CLI command. */ | |
9779 | ||
9780 | static void | |
0b39b52e | 9781 | break_range_command (const char *arg, int from_tty) |
f1310107 | 9782 | { |
f2fc3015 | 9783 | const char *arg_start; |
f1310107 TJB |
9784 | struct linespec_result canonical_start, canonical_end; |
9785 | int bp_count, can_use_bp, length; | |
9786 | CORE_ADDR end; | |
9787 | struct breakpoint *b; | |
f1310107 TJB |
9788 | |
9789 | /* We don't support software ranged breakpoints. */ | |
9790 | if (target_ranged_break_num_registers () < 0) | |
9791 | error (_("This target does not support hardware ranged breakpoints.")); | |
9792 | ||
9793 | bp_count = hw_breakpoint_used_count (); | |
9794 | bp_count += target_ranged_break_num_registers (); | |
9795 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9796 | bp_count, 0); | |
9797 | if (can_use_bp < 0) | |
9798 | error (_("Hardware breakpoints used exceeds limit.")); | |
9799 | ||
f8eba3c6 | 9800 | arg = skip_spaces (arg); |
f1310107 TJB |
9801 | if (arg == NULL || arg[0] == '\0') |
9802 | error(_("No address range specified.")); | |
9803 | ||
f8eba3c6 | 9804 | arg_start = arg; |
ffc2605c TT |
9805 | event_location_up start_location = string_to_event_location (&arg, |
9806 | current_language); | |
9807 | parse_breakpoint_sals (start_location.get (), &canonical_start); | |
f1310107 TJB |
9808 | |
9809 | if (arg[0] != ',') | |
9810 | error (_("Too few arguments.")); | |
6c5b2ebe | 9811 | else if (canonical_start.lsals.empty ()) |
f1310107 | 9812 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 | 9813 | |
6c5b2ebe | 9814 | const linespec_sals &lsal_start = canonical_start.lsals[0]; |
f8eba3c6 | 9815 | |
6c5b2ebe PA |
9816 | if (canonical_start.lsals.size () > 1 |
9817 | || lsal_start.sals.size () != 1) | |
f1310107 TJB |
9818 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9819 | ||
6c5b2ebe | 9820 | const symtab_and_line &sal_start = lsal_start.sals[0]; |
81b1e71c | 9821 | std::string addr_string_start (arg_start, arg - arg_start); |
f1310107 TJB |
9822 | |
9823 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9824 | arg = skip_spaces (arg); |
f1310107 TJB |
9825 | |
9826 | /* Parse the end location. */ | |
9827 | ||
f1310107 TJB |
9828 | arg_start = arg; |
9829 | ||
f8eba3c6 | 9830 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9831 | parse_breakpoint_sals because we need to specify the start location's |
9832 | symtab and line as the default symtab and line for the end of the | |
9833 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9834 | where +14 means 14 lines from the start location. */ | |
ffc2605c TT |
9835 | event_location_up end_location = string_to_event_location (&arg, |
9836 | current_language); | |
9837 | decode_line_full (end_location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
f8eba3c6 TT |
9838 | sal_start.symtab, sal_start.line, |
9839 | &canonical_end, NULL, NULL); | |
9840 | ||
6c5b2ebe | 9841 | if (canonical_end.lsals.empty ()) |
f1310107 | 9842 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 | 9843 | |
6c5b2ebe PA |
9844 | const linespec_sals &lsal_end = canonical_end.lsals[0]; |
9845 | if (canonical_end.lsals.size () > 1 | |
9846 | || lsal_end.sals.size () != 1) | |
f1310107 TJB |
9847 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9848 | ||
6c5b2ebe | 9849 | const symtab_and_line &sal_end = lsal_end.sals[0]; |
f1310107 TJB |
9850 | |
9851 | end = find_breakpoint_range_end (sal_end); | |
9852 | if (sal_start.pc > end) | |
177b42fe | 9853 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9854 | |
9855 | length = end - sal_start.pc + 1; | |
9856 | if (length < 0) | |
9857 | /* Length overflowed. */ | |
9858 | error (_("Address range too large.")); | |
9859 | else if (length == 1) | |
9860 | { | |
9861 | /* This range is simple enough to be handled by | |
9862 | the `hbreak' command. */ | |
81b1e71c | 9863 | hbreak_command (&addr_string_start[0], 1); |
f1310107 TJB |
9864 | |
9865 | return; | |
9866 | } | |
9867 | ||
9868 | /* Now set up the breakpoint. */ | |
9869 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9870 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9871 | set_breakpoint_count (breakpoint_count + 1); |
9872 | b->number = breakpoint_count; | |
9873 | b->disposition = disp_donttouch; | |
d28cd78a TT |
9874 | b->location = std::move (start_location); |
9875 | b->location_range_end = std::move (end_location); | |
f1310107 TJB |
9876 | b->loc->length = length; |
9877 | ||
f1310107 | 9878 | mention (b); |
76727919 | 9879 | gdb::observers::breakpoint_created.notify (b); |
44702360 | 9880 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
9881 | } |
9882 | ||
4a64f543 MS |
9883 | /* Return non-zero if EXP is verified as constant. Returned zero |
9884 | means EXP is variable. Also the constant detection may fail for | |
9885 | some constant expressions and in such case still falsely return | |
9886 | zero. */ | |
2e6e3d9c | 9887 | |
65d79d4b SDJ |
9888 | static int |
9889 | watchpoint_exp_is_const (const struct expression *exp) | |
9890 | { | |
9891 | int i = exp->nelts; | |
9892 | ||
9893 | while (i > 0) | |
9894 | { | |
9895 | int oplenp, argsp; | |
9896 | ||
9897 | /* We are only interested in the descriptor of each element. */ | |
9898 | operator_length (exp, i, &oplenp, &argsp); | |
9899 | i -= oplenp; | |
9900 | ||
9901 | switch (exp->elts[i].opcode) | |
9902 | { | |
9903 | case BINOP_ADD: | |
9904 | case BINOP_SUB: | |
9905 | case BINOP_MUL: | |
9906 | case BINOP_DIV: | |
9907 | case BINOP_REM: | |
9908 | case BINOP_MOD: | |
9909 | case BINOP_LSH: | |
9910 | case BINOP_RSH: | |
9911 | case BINOP_LOGICAL_AND: | |
9912 | case BINOP_LOGICAL_OR: | |
9913 | case BINOP_BITWISE_AND: | |
9914 | case BINOP_BITWISE_IOR: | |
9915 | case BINOP_BITWISE_XOR: | |
9916 | case BINOP_EQUAL: | |
9917 | case BINOP_NOTEQUAL: | |
9918 | case BINOP_LESS: | |
9919 | case BINOP_GTR: | |
9920 | case BINOP_LEQ: | |
9921 | case BINOP_GEQ: | |
9922 | case BINOP_REPEAT: | |
9923 | case BINOP_COMMA: | |
9924 | case BINOP_EXP: | |
9925 | case BINOP_MIN: | |
9926 | case BINOP_MAX: | |
9927 | case BINOP_INTDIV: | |
9928 | case BINOP_CONCAT: | |
65d79d4b SDJ |
9929 | case TERNOP_COND: |
9930 | case TERNOP_SLICE: | |
65d79d4b SDJ |
9931 | |
9932 | case OP_LONG: | |
edd079d9 | 9933 | case OP_FLOAT: |
65d79d4b SDJ |
9934 | case OP_LAST: |
9935 | case OP_COMPLEX: | |
9936 | case OP_STRING: | |
65d79d4b SDJ |
9937 | case OP_ARRAY: |
9938 | case OP_TYPE: | |
608b4967 TT |
9939 | case OP_TYPEOF: |
9940 | case OP_DECLTYPE: | |
6e72ca20 | 9941 | case OP_TYPEID: |
65d79d4b SDJ |
9942 | case OP_NAME: |
9943 | case OP_OBJC_NSSTRING: | |
9944 | ||
9945 | case UNOP_NEG: | |
9946 | case UNOP_LOGICAL_NOT: | |
9947 | case UNOP_COMPLEMENT: | |
9948 | case UNOP_ADDR: | |
9949 | case UNOP_HIGH: | |
aeaa2474 | 9950 | case UNOP_CAST: |
9eaf6705 TT |
9951 | |
9952 | case UNOP_CAST_TYPE: | |
9953 | case UNOP_REINTERPRET_CAST: | |
9954 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
9955 | /* Unary, binary and ternary operators: We have to check |
9956 | their operands. If they are constant, then so is the | |
9957 | result of that operation. For instance, if A and B are | |
9958 | determined to be constants, then so is "A + B". | |
9959 | ||
9960 | UNOP_IND is one exception to the rule above, because the | |
9961 | value of *ADDR is not necessarily a constant, even when | |
9962 | ADDR is. */ | |
65d79d4b SDJ |
9963 | break; |
9964 | ||
9965 | case OP_VAR_VALUE: | |
9966 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9967 | |
65d79d4b | 9968 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9969 | possible that a buggy compiler could mark a variable as |
9970 | constant even when it is not, and TYPE_CONST would return | |
9971 | true in this case, while SYMBOL_CLASS wouldn't. | |
9972 | ||
9973 | We also have to check for function symbols because they | |
9974 | are always constant. */ | |
65d79d4b SDJ |
9975 | { |
9976 | struct symbol *s = exp->elts[i + 2].symbol; | |
9977 | ||
9978 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9979 | && SYMBOL_CLASS (s) != LOC_CONST | |
9980 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9981 | return 0; | |
9982 | break; | |
9983 | } | |
9984 | ||
9985 | /* The default action is to return 0 because we are using | |
9986 | the optimistic approach here: If we don't know something, | |
9987 | then it is not a constant. */ | |
9988 | default: | |
9989 | return 0; | |
9990 | } | |
9991 | } | |
9992 | ||
9993 | return 1; | |
9994 | } | |
9995 | ||
c1fc2657 | 9996 | /* Watchpoint destructor. */ |
3a5c3e22 | 9997 | |
c1fc2657 | 9998 | watchpoint::~watchpoint () |
3a5c3e22 | 9999 | { |
c1fc2657 SM |
10000 | xfree (this->exp_string); |
10001 | xfree (this->exp_string_reparse); | |
3a5c3e22 PA |
10002 | } |
10003 | ||
348d480f PA |
10004 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10005 | ||
10006 | static void | |
10007 | re_set_watchpoint (struct breakpoint *b) | |
10008 | { | |
3a5c3e22 PA |
10009 | struct watchpoint *w = (struct watchpoint *) b; |
10010 | ||
348d480f PA |
10011 | /* Watchpoint can be either on expression using entirely global |
10012 | variables, or it can be on local variables. | |
10013 | ||
10014 | Watchpoints of the first kind are never auto-deleted, and even | |
10015 | persist across program restarts. Since they can use variables | |
10016 | from shared libraries, we need to reparse expression as libraries | |
10017 | are loaded and unloaded. | |
10018 | ||
10019 | Watchpoints on local variables can also change meaning as result | |
10020 | of solib event. For example, if a watchpoint uses both a local | |
10021 | and a global variables in expression, it's a local watchpoint, | |
10022 | but unloading of a shared library will make the expression | |
10023 | invalid. This is not a very common use case, but we still | |
10024 | re-evaluate expression, to avoid surprises to the user. | |
10025 | ||
10026 | Note that for local watchpoints, we re-evaluate it only if | |
10027 | watchpoints frame id is still valid. If it's not, it means the | |
10028 | watchpoint is out of scope and will be deleted soon. In fact, | |
10029 | I'm not sure we'll ever be called in this case. | |
10030 | ||
10031 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10032 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10033 | |
3a5c3e22 PA |
10034 | Don't do anything about disabled watchpoints, since they will be |
10035 | reevaluated again when enabled. */ | |
10036 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10037 | } |
10038 | ||
77b06cd7 TJB |
10039 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10040 | ||
10041 | static int | |
10042 | insert_watchpoint (struct bp_location *bl) | |
10043 | { | |
3a5c3e22 PA |
10044 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10045 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10046 | |
10047 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10048 | w->cond_exp.get ()); |
77b06cd7 TJB |
10049 | } |
10050 | ||
10051 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10052 | ||
10053 | static int | |
73971819 | 10054 | remove_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
77b06cd7 | 10055 | { |
3a5c3e22 PA |
10056 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10057 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10058 | |
10059 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
4d01a485 | 10060 | w->cond_exp.get ()); |
e09342b5 TJB |
10061 | } |
10062 | ||
e09342b5 | 10063 | static int |
348d480f | 10064 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
bd522513 | 10065 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 10066 | const struct target_waitstatus *ws) |
e09342b5 | 10067 | { |
348d480f | 10068 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10069 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10070 | |
348d480f PA |
10071 | /* Continuable hardware watchpoints are treated as non-existent if the |
10072 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10073 | some data address). Otherwise gdb won't stop on a break instruction | |
10074 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10075 | been defined. Also skip watchpoints which we know did not trigger | |
10076 | (did not match the data address). */ | |
10077 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10078 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10079 | return 0; |
9c06b0b4 | 10080 | |
348d480f | 10081 | return 1; |
9c06b0b4 TJB |
10082 | } |
10083 | ||
348d480f PA |
10084 | static void |
10085 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10086 | { |
348d480f | 10087 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10088 | |
348d480f | 10089 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10090 | } |
10091 | ||
10092 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10093 | hardware watchpoints. */ |
9c06b0b4 TJB |
10094 | |
10095 | static int | |
348d480f | 10096 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10097 | { |
3a5c3e22 PA |
10098 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10099 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10100 | |
10101 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10102 | } |
10103 | ||
10104 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10105 | hardware watchpoints. */ |
9c06b0b4 TJB |
10106 | |
10107 | static int | |
348d480f | 10108 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10109 | { |
efa80663 PA |
10110 | /* Read and access watchpoints only work with hardware support. */ |
10111 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10112 | } |
10113 | ||
9c06b0b4 | 10114 | static enum print_stop_action |
348d480f | 10115 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10116 | { |
348d480f | 10117 | struct breakpoint *b; |
348d480f | 10118 | enum print_stop_action result; |
3a5c3e22 | 10119 | struct watchpoint *w; |
79a45e25 | 10120 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10121 | |
10122 | gdb_assert (bs->bp_location_at != NULL); | |
10123 | ||
348d480f | 10124 | b = bs->breakpoint_at; |
3a5c3e22 | 10125 | w = (struct watchpoint *) b; |
348d480f | 10126 | |
f303dbd6 PA |
10127 | annotate_watchpoint (b->number); |
10128 | maybe_print_thread_hit_breakpoint (uiout); | |
10129 | ||
d7e74731 PA |
10130 | string_file stb; |
10131 | ||
76f9c9cf | 10132 | gdb::optional<ui_out_emit_tuple> tuple_emitter; |
9c06b0b4 TJB |
10133 | switch (b->type) |
10134 | { | |
348d480f | 10135 | case bp_watchpoint: |
9c06b0b4 | 10136 | case bp_hardware_watchpoint: |
112e8700 SM |
10137 | if (uiout->is_mi_like_p ()) |
10138 | uiout->field_string | |
10139 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f | 10140 | mention (b); |
76f9c9cf | 10141 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10142 | uiout->text ("\nOld value = "); |
850645cf | 10143 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10144 | uiout->field_stream ("old", stb); |
10145 | uiout->text ("\nNew value = "); | |
850645cf | 10146 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10147 | uiout->field_stream ("new", stb); |
10148 | uiout->text ("\n"); | |
348d480f PA |
10149 | /* More than one watchpoint may have been triggered. */ |
10150 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10151 | break; |
10152 | ||
10153 | case bp_read_watchpoint: | |
112e8700 SM |
10154 | if (uiout->is_mi_like_p ()) |
10155 | uiout->field_string | |
10156 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f | 10157 | mention (b); |
76f9c9cf | 10158 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10159 | uiout->text ("\nValue = "); |
850645cf | 10160 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10161 | uiout->field_stream ("value", stb); |
10162 | uiout->text ("\n"); | |
348d480f | 10163 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10164 | break; |
10165 | ||
10166 | case bp_access_watchpoint: | |
348d480f PA |
10167 | if (bs->old_val != NULL) |
10168 | { | |
112e8700 SM |
10169 | if (uiout->is_mi_like_p ()) |
10170 | uiout->field_string | |
10171 | ("reason", | |
348d480f PA |
10172 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10173 | mention (b); | |
76f9c9cf | 10174 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10175 | uiout->text ("\nOld value = "); |
850645cf | 10176 | watchpoint_value_print (bs->old_val.get (), &stb); |
112e8700 SM |
10177 | uiout->field_stream ("old", stb); |
10178 | uiout->text ("\nNew value = "); | |
348d480f PA |
10179 | } |
10180 | else | |
10181 | { | |
10182 | mention (b); | |
112e8700 SM |
10183 | if (uiout->is_mi_like_p ()) |
10184 | uiout->field_string | |
10185 | ("reason", | |
348d480f | 10186 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
76f9c9cf | 10187 | tuple_emitter.emplace (uiout, "value"); |
112e8700 | 10188 | uiout->text ("\nValue = "); |
348d480f | 10189 | } |
850645cf | 10190 | watchpoint_value_print (w->val.get (), &stb); |
112e8700 SM |
10191 | uiout->field_stream ("new", stb); |
10192 | uiout->text ("\n"); | |
348d480f | 10193 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10194 | break; |
10195 | default: | |
348d480f | 10196 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10197 | } |
10198 | ||
348d480f PA |
10199 | return result; |
10200 | } | |
10201 | ||
10202 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10203 | watchpoints. */ | |
10204 | ||
10205 | static void | |
10206 | print_mention_watchpoint (struct breakpoint *b) | |
10207 | { | |
3a5c3e22 | 10208 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10209 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10210 | const char *tuple_name; |
348d480f PA |
10211 | |
10212 | switch (b->type) | |
10213 | { | |
10214 | case bp_watchpoint: | |
112e8700 | 10215 | uiout->text ("Watchpoint "); |
46b9c129 | 10216 | tuple_name = "wpt"; |
348d480f PA |
10217 | break; |
10218 | case bp_hardware_watchpoint: | |
112e8700 | 10219 | uiout->text ("Hardware watchpoint "); |
46b9c129 | 10220 | tuple_name = "wpt"; |
348d480f PA |
10221 | break; |
10222 | case bp_read_watchpoint: | |
112e8700 | 10223 | uiout->text ("Hardware read watchpoint "); |
46b9c129 | 10224 | tuple_name = "hw-rwpt"; |
348d480f PA |
10225 | break; |
10226 | case bp_access_watchpoint: | |
112e8700 | 10227 | uiout->text ("Hardware access (read/write) watchpoint "); |
46b9c129 | 10228 | tuple_name = "hw-awpt"; |
348d480f PA |
10229 | break; |
10230 | default: | |
10231 | internal_error (__FILE__, __LINE__, | |
10232 | _("Invalid hardware watchpoint type.")); | |
10233 | } | |
10234 | ||
46b9c129 | 10235 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10236 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10237 | uiout->text (": "); |
10238 | uiout->field_string ("exp", w->exp_string); | |
348d480f PA |
10239 | } |
10240 | ||
10241 | /* Implement the "print_recreate" breakpoint_ops method for | |
10242 | watchpoints. */ | |
10243 | ||
10244 | static void | |
10245 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10246 | { | |
3a5c3e22 PA |
10247 | struct watchpoint *w = (struct watchpoint *) b; |
10248 | ||
348d480f PA |
10249 | switch (b->type) |
10250 | { | |
10251 | case bp_watchpoint: | |
10252 | case bp_hardware_watchpoint: | |
10253 | fprintf_unfiltered (fp, "watch"); | |
10254 | break; | |
10255 | case bp_read_watchpoint: | |
10256 | fprintf_unfiltered (fp, "rwatch"); | |
10257 | break; | |
10258 | case bp_access_watchpoint: | |
10259 | fprintf_unfiltered (fp, "awatch"); | |
10260 | break; | |
10261 | default: | |
10262 | internal_error (__FILE__, __LINE__, | |
10263 | _("Invalid watchpoint type.")); | |
10264 | } | |
10265 | ||
3a5c3e22 | 10266 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10267 | print_recreate_thread (b, fp); |
348d480f PA |
10268 | } |
10269 | ||
427cd150 TT |
10270 | /* Implement the "explains_signal" breakpoint_ops method for |
10271 | watchpoints. */ | |
10272 | ||
47591c29 | 10273 | static int |
427cd150 TT |
10274 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10275 | { | |
10276 | /* A software watchpoint cannot cause a signal other than | |
10277 | GDB_SIGNAL_TRAP. */ | |
10278 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10279 | return 0; |
427cd150 | 10280 | |
47591c29 | 10281 | return 1; |
427cd150 TT |
10282 | } |
10283 | ||
348d480f PA |
10284 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10285 | ||
2060206e | 10286 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10287 | |
10288 | /* Implement the "insert" breakpoint_ops method for | |
10289 | masked hardware watchpoints. */ | |
10290 | ||
10291 | static int | |
10292 | insert_masked_watchpoint (struct bp_location *bl) | |
10293 | { | |
3a5c3e22 PA |
10294 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10295 | ||
10296 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10297 | bl->watchpoint_type); |
10298 | } | |
10299 | ||
10300 | /* Implement the "remove" breakpoint_ops method for | |
10301 | masked hardware watchpoints. */ | |
10302 | ||
10303 | static int | |
73971819 | 10304 | remove_masked_watchpoint (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f | 10305 | { |
3a5c3e22 PA |
10306 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10307 | ||
10308 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10309 | bl->watchpoint_type); |
10310 | } | |
10311 | ||
10312 | /* Implement the "resources_needed" breakpoint_ops method for | |
10313 | masked hardware watchpoints. */ | |
10314 | ||
10315 | static int | |
10316 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10317 | { | |
3a5c3e22 PA |
10318 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10319 | ||
10320 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10321 | } |
10322 | ||
10323 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10324 | masked hardware watchpoints. */ | |
10325 | ||
10326 | static int | |
10327 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10328 | { | |
10329 | return 0; | |
10330 | } | |
10331 | ||
10332 | /* Implement the "print_it" breakpoint_ops method for | |
10333 | masked hardware watchpoints. */ | |
10334 | ||
10335 | static enum print_stop_action | |
10336 | print_it_masked_watchpoint (bpstat bs) | |
10337 | { | |
10338 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10339 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10340 | |
10341 | /* Masked watchpoints have only one location. */ | |
10342 | gdb_assert (b->loc && b->loc->next == NULL); | |
10343 | ||
f303dbd6 PA |
10344 | annotate_watchpoint (b->number); |
10345 | maybe_print_thread_hit_breakpoint (uiout); | |
10346 | ||
348d480f PA |
10347 | switch (b->type) |
10348 | { | |
10349 | case bp_hardware_watchpoint: | |
112e8700 SM |
10350 | if (uiout->is_mi_like_p ()) |
10351 | uiout->field_string | |
10352 | ("reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10353 | break; |
10354 | ||
10355 | case bp_read_watchpoint: | |
112e8700 SM |
10356 | if (uiout->is_mi_like_p ()) |
10357 | uiout->field_string | |
10358 | ("reason", async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10359 | break; |
10360 | ||
10361 | case bp_access_watchpoint: | |
112e8700 SM |
10362 | if (uiout->is_mi_like_p ()) |
10363 | uiout->field_string | |
10364 | ("reason", | |
348d480f PA |
10365 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); |
10366 | break; | |
10367 | default: | |
10368 | internal_error (__FILE__, __LINE__, | |
10369 | _("Invalid hardware watchpoint type.")); | |
10370 | } | |
10371 | ||
10372 | mention (b); | |
112e8700 | 10373 | uiout->text (_("\n\ |
9c06b0b4 TJB |
10374 | Check the underlying instruction at PC for the memory\n\ |
10375 | address and value which triggered this watchpoint.\n")); | |
112e8700 | 10376 | uiout->text ("\n"); |
9c06b0b4 TJB |
10377 | |
10378 | /* More than one watchpoint may have been triggered. */ | |
10379 | return PRINT_UNKNOWN; | |
10380 | } | |
10381 | ||
10382 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10383 | masked hardware watchpoints. */ | |
10384 | ||
10385 | static void | |
10386 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10387 | struct ui_out *uiout) | |
10388 | { | |
3a5c3e22 PA |
10389 | struct watchpoint *w = (struct watchpoint *) b; |
10390 | ||
9c06b0b4 TJB |
10391 | /* Masked watchpoints have only one location. */ |
10392 | gdb_assert (b->loc && b->loc->next == NULL); | |
10393 | ||
112e8700 SM |
10394 | uiout->text ("\tmask "); |
10395 | uiout->field_core_addr ("mask", b->loc->gdbarch, w->hw_wp_mask); | |
10396 | uiout->text ("\n"); | |
9c06b0b4 TJB |
10397 | } |
10398 | ||
10399 | /* Implement the "print_mention" breakpoint_ops method for | |
10400 | masked hardware watchpoints. */ | |
10401 | ||
10402 | static void | |
10403 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10404 | { | |
3a5c3e22 | 10405 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10406 | struct ui_out *uiout = current_uiout; |
46b9c129 | 10407 | const char *tuple_name; |
9c06b0b4 TJB |
10408 | |
10409 | switch (b->type) | |
10410 | { | |
10411 | case bp_hardware_watchpoint: | |
112e8700 | 10412 | uiout->text ("Masked hardware watchpoint "); |
46b9c129 | 10413 | tuple_name = "wpt"; |
9c06b0b4 TJB |
10414 | break; |
10415 | case bp_read_watchpoint: | |
112e8700 | 10416 | uiout->text ("Masked hardware read watchpoint "); |
46b9c129 | 10417 | tuple_name = "hw-rwpt"; |
9c06b0b4 TJB |
10418 | break; |
10419 | case bp_access_watchpoint: | |
112e8700 | 10420 | uiout->text ("Masked hardware access (read/write) watchpoint "); |
46b9c129 | 10421 | tuple_name = "hw-awpt"; |
9c06b0b4 TJB |
10422 | break; |
10423 | default: | |
10424 | internal_error (__FILE__, __LINE__, | |
10425 | _("Invalid hardware watchpoint type.")); | |
10426 | } | |
10427 | ||
46b9c129 | 10428 | ui_out_emit_tuple tuple_emitter (uiout, tuple_name); |
381befee | 10429 | uiout->field_signed ("number", b->number); |
112e8700 SM |
10430 | uiout->text (": "); |
10431 | uiout->field_string ("exp", w->exp_string); | |
9c06b0b4 TJB |
10432 | } |
10433 | ||
10434 | /* Implement the "print_recreate" breakpoint_ops method for | |
10435 | masked hardware watchpoints. */ | |
10436 | ||
10437 | static void | |
10438 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10439 | { | |
3a5c3e22 | 10440 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10441 | char tmp[40]; |
10442 | ||
10443 | switch (b->type) | |
10444 | { | |
10445 | case bp_hardware_watchpoint: | |
10446 | fprintf_unfiltered (fp, "watch"); | |
10447 | break; | |
10448 | case bp_read_watchpoint: | |
10449 | fprintf_unfiltered (fp, "rwatch"); | |
10450 | break; | |
10451 | case bp_access_watchpoint: | |
10452 | fprintf_unfiltered (fp, "awatch"); | |
10453 | break; | |
10454 | default: | |
10455 | internal_error (__FILE__, __LINE__, | |
10456 | _("Invalid hardware watchpoint type.")); | |
10457 | } | |
10458 | ||
3a5c3e22 PA |
10459 | sprintf_vma (tmp, w->hw_wp_mask); |
10460 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10461 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10462 | } |
10463 | ||
10464 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10465 | ||
2060206e | 10466 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10467 | |
10468 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10469 | ||
f2478a7e | 10470 | static bool |
9c06b0b4 TJB |
10471 | is_masked_watchpoint (const struct breakpoint *b) |
10472 | { | |
10473 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10474 | } | |
10475 | ||
53a5351d JM |
10476 | /* accessflag: hw_write: watch write, |
10477 | hw_read: watch read, | |
10478 | hw_access: watch access (read or write) */ | |
c906108c | 10479 | static void |
bbc13ae3 | 10480 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10481 | int just_location, int internal) |
c906108c | 10482 | { |
c1fc2657 | 10483 | struct breakpoint *scope_breakpoint = NULL; |
270140bd | 10484 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
b926417a | 10485 | struct value *result; |
bb9d5f81 | 10486 | int saved_bitpos = 0, saved_bitsize = 0; |
bbc13ae3 KS |
10487 | const char *exp_start = NULL; |
10488 | const char *exp_end = NULL; | |
10489 | const char *tok, *end_tok; | |
9c06b0b4 | 10490 | int toklen = -1; |
bbc13ae3 KS |
10491 | const char *cond_start = NULL; |
10492 | const char *cond_end = NULL; | |
c906108c | 10493 | enum bptype bp_type; |
37e4754d | 10494 | int thread = -1; |
0cf6dd15 | 10495 | int pc = 0; |
9c06b0b4 TJB |
10496 | /* Flag to indicate whether we are going to use masks for |
10497 | the hardware watchpoint. */ | |
10498 | int use_mask = 0; | |
10499 | CORE_ADDR mask = 0; | |
c906108c | 10500 | |
37e4754d LM |
10501 | /* Make sure that we actually have parameters to parse. */ |
10502 | if (arg != NULL && arg[0] != '\0') | |
10503 | { | |
bbc13ae3 KS |
10504 | const char *value_start; |
10505 | ||
10506 | exp_end = arg + strlen (arg); | |
37e4754d | 10507 | |
9c06b0b4 TJB |
10508 | /* Look for "parameter value" pairs at the end |
10509 | of the arguments string. */ | |
bbc13ae3 | 10510 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10511 | { |
10512 | /* Skip whitespace at the end of the argument list. */ | |
10513 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10514 | tok--; | |
10515 | ||
10516 | /* Find the beginning of the last token. | |
10517 | This is the value of the parameter. */ | |
10518 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10519 | tok--; | |
10520 | value_start = tok + 1; | |
10521 | ||
10522 | /* Skip whitespace. */ | |
10523 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10524 | tok--; | |
10525 | ||
10526 | end_tok = tok; | |
10527 | ||
10528 | /* Find the beginning of the second to last token. | |
10529 | This is the parameter itself. */ | |
10530 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10531 | tok--; | |
10532 | tok++; | |
10533 | toklen = end_tok - tok + 1; | |
10534 | ||
61012eef | 10535 | if (toklen == 6 && startswith (tok, "thread")) |
9c06b0b4 | 10536 | { |
5d5658a1 | 10537 | struct thread_info *thr; |
9c06b0b4 TJB |
10538 | /* At this point we've found a "thread" token, which means |
10539 | the user is trying to set a watchpoint that triggers | |
10540 | only in a specific thread. */ | |
5d5658a1 | 10541 | const char *endp; |
37e4754d | 10542 | |
9c06b0b4 TJB |
10543 | if (thread != -1) |
10544 | error(_("You can specify only one thread.")); | |
37e4754d | 10545 | |
9c06b0b4 | 10546 | /* Extract the thread ID from the next token. */ |
5d5658a1 | 10547 | thr = parse_thread_id (value_start, &endp); |
37e4754d | 10548 | |
5d5658a1 | 10549 | /* Check if the user provided a valid thread ID. */ |
9c06b0b4 | 10550 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') |
5d5658a1 | 10551 | invalid_thread_id_error (value_start); |
9c06b0b4 | 10552 | |
5d5658a1 | 10553 | thread = thr->global_num; |
9c06b0b4 | 10554 | } |
61012eef | 10555 | else if (toklen == 4 && startswith (tok, "mask")) |
9c06b0b4 TJB |
10556 | { |
10557 | /* We've found a "mask" token, which means the user wants to | |
10558 | create a hardware watchpoint that is going to have the mask | |
10559 | facility. */ | |
10560 | struct value *mask_value, *mark; | |
37e4754d | 10561 | |
9c06b0b4 TJB |
10562 | if (use_mask) |
10563 | error(_("You can specify only one mask.")); | |
37e4754d | 10564 | |
9c06b0b4 | 10565 | use_mask = just_location = 1; |
37e4754d | 10566 | |
9c06b0b4 TJB |
10567 | mark = value_mark (); |
10568 | mask_value = parse_to_comma_and_eval (&value_start); | |
10569 | mask = value_as_address (mask_value); | |
10570 | value_free_to_mark (mark); | |
10571 | } | |
10572 | else | |
10573 | /* We didn't recognize what we found. We should stop here. */ | |
10574 | break; | |
37e4754d | 10575 | |
9c06b0b4 TJB |
10576 | /* Truncate the string and get rid of the "parameter value" pair before |
10577 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10578 | exp_end = tok; |
9c06b0b4 | 10579 | } |
37e4754d | 10580 | } |
bbc13ae3 KS |
10581 | else |
10582 | exp_end = arg; | |
37e4754d | 10583 | |
bbc13ae3 KS |
10584 | /* Parse the rest of the arguments. From here on out, everything |
10585 | is in terms of a newly allocated string instead of the original | |
10586 | ARG. */ | |
81b1e71c TT |
10587 | std::string expression (arg, exp_end - arg); |
10588 | exp_start = arg = expression.c_str (); | |
699bd4cf TT |
10589 | innermost_block_tracker tracker; |
10590 | expression_up exp = parse_exp_1 (&arg, 0, 0, 0, &tracker); | |
c906108c | 10591 | exp_end = arg; |
fa8a61dc TT |
10592 | /* Remove trailing whitespace from the expression before saving it. |
10593 | This makes the eventual display of the expression string a bit | |
10594 | prettier. */ | |
10595 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10596 | --exp_end; | |
10597 | ||
65d79d4b | 10598 | /* Checking if the expression is not constant. */ |
4d01a485 | 10599 | if (watchpoint_exp_is_const (exp.get ())) |
65d79d4b SDJ |
10600 | { |
10601 | int len; | |
10602 | ||
10603 | len = exp_end - exp_start; | |
10604 | while (len > 0 && isspace (exp_start[len - 1])) | |
10605 | len--; | |
10606 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10607 | } | |
10608 | ||
699bd4cf | 10609 | exp_valid_block = tracker.block (); |
b926417a | 10610 | struct value *mark = value_mark (); |
850645cf TT |
10611 | struct value *val_as_value = nullptr; |
10612 | fetch_subexp_value (exp.get (), &pc, &val_as_value, &result, NULL, | |
10613 | just_location); | |
06a64a0b | 10614 | |
850645cf | 10615 | if (val_as_value != NULL && just_location) |
bb9d5f81 | 10616 | { |
850645cf TT |
10617 | saved_bitpos = value_bitpos (val_as_value); |
10618 | saved_bitsize = value_bitsize (val_as_value); | |
bb9d5f81 PP |
10619 | } |
10620 | ||
850645cf | 10621 | value_ref_ptr val; |
06a64a0b TT |
10622 | if (just_location) |
10623 | { | |
9c06b0b4 TJB |
10624 | int ret; |
10625 | ||
06a64a0b | 10626 | exp_valid_block = NULL; |
850645cf | 10627 | val = release_value (value_addr (result)); |
06a64a0b | 10628 | value_free_to_mark (mark); |
9c06b0b4 TJB |
10629 | |
10630 | if (use_mask) | |
10631 | { | |
850645cf | 10632 | ret = target_masked_watch_num_registers (value_as_address (val.get ()), |
9c06b0b4 TJB |
10633 | mask); |
10634 | if (ret == -1) | |
10635 | error (_("This target does not support masked watchpoints.")); | |
10636 | else if (ret == -2) | |
10637 | error (_("Invalid mask or memory region.")); | |
10638 | } | |
06a64a0b | 10639 | } |
850645cf TT |
10640 | else if (val_as_value != NULL) |
10641 | val = release_value (val_as_value); | |
c906108c | 10642 | |
f1735a53 TT |
10643 | tok = skip_spaces (arg); |
10644 | end_tok = skip_to_space (tok); | |
c906108c SS |
10645 | |
10646 | toklen = end_tok - tok; | |
10647 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10648 | { | |
10649 | tok = cond_start = end_tok + 1; | |
699bd4cf TT |
10650 | innermost_block_tracker if_tracker; |
10651 | parse_exp_1 (&tok, 0, 0, 0, &if_tracker); | |
60e1c644 PA |
10652 | |
10653 | /* The watchpoint expression may not be local, but the condition | |
10654 | may still be. E.g.: `watch global if local > 0'. */ | |
699bd4cf | 10655 | cond_exp_valid_block = if_tracker.block (); |
60e1c644 | 10656 | |
c906108c SS |
10657 | cond_end = tok; |
10658 | } | |
10659 | if (*tok) | |
8a3fe4f8 | 10660 | error (_("Junk at end of command.")); |
c906108c | 10661 | |
441d7c93 PA |
10662 | frame_info *wp_frame = block_innermost_frame (exp_valid_block); |
10663 | ||
10664 | /* Save this because create_internal_breakpoint below invalidates | |
10665 | 'wp_frame'. */ | |
10666 | frame_id watchpoint_frame = get_frame_id (wp_frame); | |
d983da9c DJ |
10667 | |
10668 | /* If the expression is "local", then set up a "watchpoint scope" | |
10669 | breakpoint at the point where we've left the scope of the watchpoint | |
10670 | expression. Create the scope breakpoint before the watchpoint, so | |
10671 | that we will encounter it first in bpstat_stop_status. */ | |
441d7c93 | 10672 | if (exp_valid_block != NULL && wp_frame != NULL) |
d983da9c | 10673 | { |
441d7c93 PA |
10674 | frame_id caller_frame_id = frame_unwind_caller_id (wp_frame); |
10675 | ||
10676 | if (frame_id_p (caller_frame_id)) | |
edb3359d | 10677 | { |
441d7c93 PA |
10678 | gdbarch *caller_arch = frame_unwind_caller_arch (wp_frame); |
10679 | CORE_ADDR caller_pc = frame_unwind_caller_pc (wp_frame); | |
10680 | ||
edb3359d | 10681 | scope_breakpoint |
441d7c93 | 10682 | = create_internal_breakpoint (caller_arch, caller_pc, |
06edf0c0 PA |
10683 | bp_watchpoint_scope, |
10684 | &momentary_breakpoint_ops); | |
d983da9c | 10685 | |
441d7c93 PA |
10686 | /* create_internal_breakpoint could invalidate WP_FRAME. */ |
10687 | wp_frame = NULL; | |
10688 | ||
edb3359d | 10689 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10690 | |
edb3359d DJ |
10691 | /* Automatically delete the breakpoint when it hits. */ |
10692 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10693 | |
edb3359d | 10694 | /* Only break in the proper frame (help with recursion). */ |
441d7c93 | 10695 | scope_breakpoint->frame_id = caller_frame_id; |
d983da9c | 10696 | |
edb3359d | 10697 | /* Set the address at which we will stop. */ |
441d7c93 PA |
10698 | scope_breakpoint->loc->gdbarch = caller_arch; |
10699 | scope_breakpoint->loc->requested_address = caller_pc; | |
edb3359d | 10700 | scope_breakpoint->loc->address |
a6d9a66e UW |
10701 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10702 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10703 | scope_breakpoint->type); |
10704 | } | |
d983da9c DJ |
10705 | } |
10706 | ||
e8369a73 AB |
10707 | /* Now set up the breakpoint. We create all watchpoints as hardware |
10708 | watchpoints here even if hardware watchpoints are turned off, a call | |
10709 | to update_watchpoint later in this function will cause the type to | |
10710 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
10711 | ||
10712 | if (accessflag == hw_read) | |
10713 | bp_type = bp_read_watchpoint; | |
10714 | else if (accessflag == hw_access) | |
10715 | bp_type = bp_access_watchpoint; | |
10716 | else | |
10717 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 | 10718 | |
b270e6f9 | 10719 | std::unique_ptr<watchpoint> w (new watchpoint ()); |
c1fc2657 | 10720 | |
348d480f | 10721 | if (use_mask) |
b270e6f9 | 10722 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10723 | &masked_watchpoint_breakpoint_ops); |
348d480f | 10724 | else |
b270e6f9 | 10725 | init_raw_breakpoint_without_location (w.get (), NULL, bp_type, |
3a5c3e22 | 10726 | &watchpoint_breakpoint_ops); |
c1fc2657 SM |
10727 | w->thread = thread; |
10728 | w->disposition = disp_donttouch; | |
10729 | w->pspace = current_program_space; | |
b22e99fd | 10730 | w->exp = std::move (exp); |
3a5c3e22 PA |
10731 | w->exp_valid_block = exp_valid_block; |
10732 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10733 | if (just_location) |
10734 | { | |
850645cf TT |
10735 | struct type *t = value_type (val.get ()); |
10736 | CORE_ADDR addr = value_as_address (val.get ()); | |
06a64a0b | 10737 | |
43cc5389 TT |
10738 | w->exp_string_reparse |
10739 | = current_language->la_watch_location_expression (t, addr).release (); | |
06a64a0b | 10740 | |
3a5c3e22 | 10741 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 | 10742 | (int) (exp_end - exp_start), exp_start); |
06a64a0b TT |
10743 | } |
10744 | else | |
3a5c3e22 | 10745 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10746 | |
10747 | if (use_mask) | |
10748 | { | |
3a5c3e22 | 10749 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10750 | } |
10751 | else | |
10752 | { | |
3a5c3e22 | 10753 | w->val = val; |
bb9d5f81 PP |
10754 | w->val_bitpos = saved_bitpos; |
10755 | w->val_bitsize = saved_bitsize; | |
4c1d86d9 | 10756 | w->val_valid = true; |
9c06b0b4 | 10757 | } |
77b06cd7 | 10758 | |
c906108c | 10759 | if (cond_start) |
c1fc2657 | 10760 | w->cond_string = savestring (cond_start, cond_end - cond_start); |
c906108c | 10761 | else |
c1fc2657 | 10762 | w->cond_string = 0; |
c5aa993b | 10763 | |
441d7c93 | 10764 | if (frame_id_p (watchpoint_frame)) |
f6bc2008 | 10765 | { |
441d7c93 | 10766 | w->watchpoint_frame = watchpoint_frame; |
3a5c3e22 | 10767 | w->watchpoint_thread = inferior_ptid; |
f6bc2008 | 10768 | } |
c906108c | 10769 | else |
f6bc2008 | 10770 | { |
3a5c3e22 PA |
10771 | w->watchpoint_frame = null_frame_id; |
10772 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10773 | } |
c906108c | 10774 | |
d983da9c | 10775 | if (scope_breakpoint != NULL) |
c906108c | 10776 | { |
d983da9c DJ |
10777 | /* The scope breakpoint is related to the watchpoint. We will |
10778 | need to act on them together. */ | |
c1fc2657 | 10779 | w->related_breakpoint = scope_breakpoint; |
b270e6f9 | 10780 | scope_breakpoint->related_breakpoint = w.get (); |
c906108c | 10781 | } |
d983da9c | 10782 | |
06a64a0b TT |
10783 | if (!just_location) |
10784 | value_free_to_mark (mark); | |
2d134ed3 | 10785 | |
b270e6f9 TT |
10786 | /* Finally update the new watchpoint. This creates the locations |
10787 | that should be inserted. */ | |
10788 | update_watchpoint (w.get (), 1); | |
a9634178 | 10789 | |
b270e6f9 | 10790 | install_breakpoint (internal, std::move (w), 1); |
c906108c SS |
10791 | } |
10792 | ||
e09342b5 | 10793 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10794 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10795 | |
c906108c | 10796 | static int |
a6535de1 | 10797 | can_use_hardware_watchpoint (const std::vector<value_ref_ptr> &vals) |
c906108c SS |
10798 | { |
10799 | int found_memory_cnt = 0; | |
10800 | ||
10801 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10802 | if (!can_use_hw_watchpoints) |
c906108c | 10803 | return 0; |
c5aa993b | 10804 | |
a6535de1 TT |
10805 | gdb_assert (!vals.empty ()); |
10806 | struct value *head = vals[0].get (); | |
10807 | ||
5c44784c JM |
10808 | /* Make sure that the value of the expression depends only upon |
10809 | memory contents, and values computed from them within GDB. If we | |
10810 | find any register references or function calls, we can't use a | |
10811 | hardware watchpoint. | |
10812 | ||
10813 | The idea here is that evaluating an expression generates a series | |
10814 | of values, one holding the value of every subexpression. (The | |
10815 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10816 | a*b+c.) GDB's values hold almost enough information to establish | |
10817 | the criteria given above --- they identify memory lvalues, | |
10818 | register lvalues, computed values, etcetera. So we can evaluate | |
10819 | the expression, and then scan the chain of values that leaves | |
10820 | behind to decide whether we can detect any possible change to the | |
10821 | expression's final value using only hardware watchpoints. | |
10822 | ||
10823 | However, I don't think that the values returned by inferior | |
10824 | function calls are special in any way. So this function may not | |
10825 | notice that an expression involving an inferior function call | |
10826 | can't be watched with hardware watchpoints. FIXME. */ | |
a6535de1 | 10827 | for (const value_ref_ptr &iter : vals) |
c906108c | 10828 | { |
a6535de1 TT |
10829 | struct value *v = iter.get (); |
10830 | ||
5c44784c | 10831 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10832 | { |
8464be76 DJ |
10833 | if (v != head && value_lazy (v)) |
10834 | /* A lazy memory lvalue in the chain is one that GDB never | |
10835 | needed to fetch; we either just used its address (e.g., | |
10836 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10837 | in `a,b'). This doesn't apply to HEAD; if that is | |
10838 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10839 | ; |
53a5351d | 10840 | else |
5c44784c JM |
10841 | { |
10842 | /* Ahh, memory we actually used! Check if we can cover | |
10843 | it with hardware watchpoints. */ | |
df407dfe | 10844 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10845 | |
10846 | /* We only watch structs and arrays if user asked for it | |
10847 | explicitly, never if they just happen to appear in a | |
10848 | middle of some value chain. */ | |
10849 | if (v == head | |
10850 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10851 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10852 | { | |
42ae5230 | 10853 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10854 | int len; |
10855 | int num_regs; | |
10856 | ||
a9634178 | 10857 | len = (target_exact_watchpoints |
e09342b5 TJB |
10858 | && is_scalar_type_recursive (vtype))? |
10859 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10860 | |
e09342b5 TJB |
10861 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10862 | if (!num_regs) | |
2e70b7b9 MS |
10863 | return 0; |
10864 | else | |
e09342b5 | 10865 | found_memory_cnt += num_regs; |
2e70b7b9 | 10866 | } |
5c44784c | 10867 | } |
c5aa993b | 10868 | } |
5086187c AC |
10869 | else if (VALUE_LVAL (v) != not_lval |
10870 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10871 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10872 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10873 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10874 | } |
10875 | ||
10876 | /* The expression itself looks suitable for using a hardware | |
10877 | watchpoint, but give the target machine a chance to reject it. */ | |
10878 | return found_memory_cnt; | |
10879 | } | |
10880 | ||
8b93c638 | 10881 | void |
f2fc3015 | 10882 | watch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10883 | { |
84f4c1fe | 10884 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10885 | } |
10886 | ||
06a64a0b TT |
10887 | /* A helper function that looks for the "-location" argument and then |
10888 | calls watch_command_1. */ | |
10889 | ||
10890 | static void | |
0b39b52e | 10891 | watch_maybe_just_location (const char *arg, int accessflag, int from_tty) |
06a64a0b TT |
10892 | { |
10893 | int just_location = 0; | |
10894 | ||
10895 | if (arg | |
10896 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10897 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
cbba3ecd | 10898 | just_location = 1; |
06a64a0b | 10899 | |
84f4c1fe | 10900 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10901 | } |
8926118c | 10902 | |
c5aa993b | 10903 | static void |
0b39b52e | 10904 | watch_command (const char *arg, int from_tty) |
c906108c | 10905 | { |
06a64a0b | 10906 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10907 | } |
10908 | ||
8b93c638 | 10909 | void |
f2fc3015 | 10910 | rwatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10911 | { |
84f4c1fe | 10912 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10913 | } |
8926118c | 10914 | |
c5aa993b | 10915 | static void |
0b39b52e | 10916 | rwatch_command (const char *arg, int from_tty) |
c906108c | 10917 | { |
06a64a0b | 10918 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10919 | } |
10920 | ||
8b93c638 | 10921 | void |
f2fc3015 | 10922 | awatch_command_wrapper (const char *arg, int from_tty, int internal) |
8b93c638 | 10923 | { |
84f4c1fe | 10924 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10925 | } |
8926118c | 10926 | |
c5aa993b | 10927 | static void |
0b39b52e | 10928 | awatch_command (const char *arg, int from_tty) |
c906108c | 10929 | { |
06a64a0b | 10930 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10931 | } |
c906108c | 10932 | \f |
c5aa993b | 10933 | |
cfc31633 PA |
10934 | /* Data for the FSM that manages the until(location)/advance commands |
10935 | in infcmd.c. Here because it uses the mechanisms of | |
10936 | breakpoints. */ | |
c906108c | 10937 | |
46e3ed7f | 10938 | struct until_break_fsm : public thread_fsm |
bfec99b2 | 10939 | { |
46e3ed7f | 10940 | /* The thread that was current when the command was executed. */ |
cfc31633 PA |
10941 | int thread; |
10942 | ||
10943 | /* The breakpoint set at the destination location. */ | |
46e3ed7f | 10944 | breakpoint_up location_breakpoint; |
cfc31633 PA |
10945 | |
10946 | /* Breakpoint set at the return address in the caller frame. May be | |
10947 | NULL. */ | |
46e3ed7f | 10948 | breakpoint_up caller_breakpoint; |
cfc31633 | 10949 | |
46e3ed7f TT |
10950 | until_break_fsm (struct interp *cmd_interp, int thread, |
10951 | breakpoint_up &&location_breakpoint, | |
10952 | breakpoint_up &&caller_breakpoint) | |
10953 | : thread_fsm (cmd_interp), | |
10954 | thread (thread), | |
10955 | location_breakpoint (std::move (location_breakpoint)), | |
10956 | caller_breakpoint (std::move (caller_breakpoint)) | |
10957 | { | |
10958 | } | |
cfc31633 | 10959 | |
46e3ed7f TT |
10960 | void clean_up (struct thread_info *thread) override; |
10961 | bool should_stop (struct thread_info *thread) override; | |
10962 | enum async_reply_reason do_async_reply_reason () override; | |
cfc31633 PA |
10963 | }; |
10964 | ||
cfc31633 PA |
10965 | /* Implementation of the 'should_stop' FSM method for the |
10966 | until(location)/advance commands. */ | |
10967 | ||
46e3ed7f TT |
10968 | bool |
10969 | until_break_fsm::should_stop (struct thread_info *tp) | |
cfc31633 | 10970 | { |
cfc31633 | 10971 | if (bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10972 | location_breakpoint.get ()) != NULL |
10973 | || (caller_breakpoint != NULL | |
cfc31633 | 10974 | && bpstat_find_breakpoint (tp->control.stop_bpstat, |
46e3ed7f TT |
10975 | caller_breakpoint.get ()) != NULL)) |
10976 | set_finished (); | |
cfc31633 | 10977 | |
46e3ed7f | 10978 | return true; |
cfc31633 PA |
10979 | } |
10980 | ||
10981 | /* Implementation of the 'clean_up' FSM method for the | |
10982 | until(location)/advance commands. */ | |
10983 | ||
46e3ed7f TT |
10984 | void |
10985 | until_break_fsm::clean_up (struct thread_info *) | |
43ff13b4 | 10986 | { |
cfc31633 | 10987 | /* Clean up our temporary breakpoints. */ |
46e3ed7f TT |
10988 | location_breakpoint.reset (); |
10989 | caller_breakpoint.reset (); | |
10990 | delete_longjmp_breakpoint (thread); | |
cfc31633 PA |
10991 | } |
10992 | ||
10993 | /* Implementation of the 'async_reply_reason' FSM method for the | |
10994 | until(location)/advance commands. */ | |
10995 | ||
46e3ed7f TT |
10996 | enum async_reply_reason |
10997 | until_break_fsm::do_async_reply_reason () | |
cfc31633 PA |
10998 | { |
10999 | return EXEC_ASYNC_LOCATION_REACHED; | |
43ff13b4 JM |
11000 | } |
11001 | ||
c906108c | 11002 | void |
f2fc3015 | 11003 | until_break_command (const char *arg, int from_tty, int anywhere) |
c906108c | 11004 | { |
8556afb4 PA |
11005 | struct frame_info *frame; |
11006 | struct gdbarch *frame_gdbarch; | |
11007 | struct frame_id stack_frame_id; | |
11008 | struct frame_id caller_frame_id; | |
186c406b TT |
11009 | int thread; |
11010 | struct thread_info *tp; | |
c906108c | 11011 | |
70509625 | 11012 | clear_proceed_status (0); |
c906108c SS |
11013 | |
11014 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11015 | this function. */ |
c5aa993b | 11016 | |
ffc2605c | 11017 | event_location_up location = string_to_event_location (&arg, current_language); |
f00aae0f | 11018 | |
6c5b2ebe PA |
11019 | std::vector<symtab_and_line> sals |
11020 | = (last_displayed_sal_is_valid () | |
11021 | ? decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, NULL, | |
11022 | get_last_displayed_symtab (), | |
11023 | get_last_displayed_line ()) | |
11024 | : decode_line_1 (location.get (), DECODE_LINE_FUNFIRSTLINE, | |
cafb3438 | 11025 | NULL, NULL, 0)); |
c5aa993b | 11026 | |
6c5b2ebe | 11027 | if (sals.size () != 1) |
8a3fe4f8 | 11028 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11029 | |
6c5b2ebe | 11030 | symtab_and_line &sal = sals[0]; |
c5aa993b | 11031 | |
c906108c | 11032 | if (*arg) |
8a3fe4f8 | 11033 | error (_("Junk at end of arguments.")); |
c5aa993b | 11034 | |
c906108c | 11035 | resolve_sal_pc (&sal); |
c5aa993b | 11036 | |
186c406b | 11037 | tp = inferior_thread (); |
5d5658a1 | 11038 | thread = tp->global_num; |
186c406b | 11039 | |
8556afb4 PA |
11040 | /* Note linespec handling above invalidates the frame chain. |
11041 | Installing a breakpoint also invalidates the frame chain (as it | |
11042 | may need to switch threads), so do any frame handling before | |
11043 | that. */ | |
11044 | ||
11045 | frame = get_selected_frame (NULL); | |
11046 | frame_gdbarch = get_frame_arch (frame); | |
11047 | stack_frame_id = get_stack_frame_id (frame); | |
11048 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11049 | |
ae66c1fc EZ |
11050 | /* Keep within the current frame, or in frames called by the current |
11051 | one. */ | |
edb3359d | 11052 | |
454dafbd | 11053 | breakpoint_up caller_breakpoint; |
5419bdae TT |
11054 | |
11055 | gdb::optional<delete_longjmp_breakpoint_cleanup> lj_deleter; | |
11056 | ||
883bc8d1 | 11057 | if (frame_id_p (caller_frame_id)) |
c906108c | 11058 | { |
883bc8d1 | 11059 | struct symtab_and_line sal2; |
cfc31633 | 11060 | struct gdbarch *caller_gdbarch; |
883bc8d1 PA |
11061 | |
11062 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11063 | sal2.pc = frame_unwind_caller_pc (frame); | |
cfc31633 PA |
11064 | caller_gdbarch = frame_unwind_caller_arch (frame); |
11065 | caller_breakpoint = set_momentary_breakpoint (caller_gdbarch, | |
11066 | sal2, | |
11067 | caller_frame_id, | |
11068 | bp_until); | |
186c406b | 11069 | |
883bc8d1 | 11070 | set_longjmp_breakpoint (tp, caller_frame_id); |
5419bdae | 11071 | lj_deleter.emplace (thread); |
c906108c | 11072 | } |
c5aa993b | 11073 | |
c70a6932 JK |
11074 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11075 | frame = NULL; | |
11076 | ||
454dafbd | 11077 | breakpoint_up location_breakpoint; |
883bc8d1 PA |
11078 | if (anywhere) |
11079 | /* If the user told us to continue until a specified location, | |
11080 | we don't specify a frame at which we need to stop. */ | |
cfc31633 PA |
11081 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11082 | null_frame_id, bp_until); | |
883bc8d1 PA |
11083 | else |
11084 | /* Otherwise, specify the selected frame, because we want to stop | |
11085 | only at the very same frame. */ | |
cfc31633 PA |
11086 | location_breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, |
11087 | stack_frame_id, bp_until); | |
883bc8d1 | 11088 | |
46e3ed7f TT |
11089 | tp->thread_fsm = new until_break_fsm (command_interp (), tp->global_num, |
11090 | std::move (location_breakpoint), | |
11091 | std::move (caller_breakpoint)); | |
f107f563 | 11092 | |
5419bdae TT |
11093 | if (lj_deleter) |
11094 | lj_deleter->release (); | |
f107f563 | 11095 | |
cfc31633 | 11096 | proceed (-1, GDB_SIGNAL_DEFAULT); |
c906108c | 11097 | } |
ae66c1fc | 11098 | |
c906108c SS |
11099 | /* This function attempts to parse an optional "if <cond>" clause |
11100 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11101 | |
c906108c SS |
11102 | Else, it returns a pointer to the condition string. (It does not |
11103 | attempt to evaluate the string against a particular block.) And, | |
11104 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11105 | if clause in the arg string. */ |
53a5351d | 11106 | |
63160a43 PA |
11107 | const char * |
11108 | ep_parse_optional_if_clause (const char **arg) | |
c906108c | 11109 | { |
63160a43 | 11110 | const char *cond_string; |
c5aa993b JM |
11111 | |
11112 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11113 | return NULL; |
c5aa993b | 11114 | |
4a64f543 | 11115 | /* Skip the "if" keyword. */ |
c906108c | 11116 | (*arg) += 2; |
c5aa993b | 11117 | |
c906108c | 11118 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11119 | condition string. */ |
f1735a53 | 11120 | *arg = skip_spaces (*arg); |
c906108c | 11121 | cond_string = *arg; |
c5aa993b | 11122 | |
4a64f543 MS |
11123 | /* Assume that the condition occupies the remainder of the arg |
11124 | string. */ | |
c906108c | 11125 | (*arg) += strlen (cond_string); |
c5aa993b | 11126 | |
c906108c SS |
11127 | return cond_string; |
11128 | } | |
c5aa993b | 11129 | |
c906108c SS |
11130 | /* Commands to deal with catching events, such as signals, exceptions, |
11131 | process start/exit, etc. */ | |
c5aa993b JM |
11132 | |
11133 | typedef enum | |
11134 | { | |
44feb3ce TT |
11135 | catch_fork_temporary, catch_vfork_temporary, |
11136 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11137 | } |
11138 | catch_fork_kind; | |
11139 | ||
c906108c | 11140 | static void |
eb4c3f4a | 11141 | catch_fork_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11142 | struct cmd_list_element *command) |
c906108c | 11143 | { |
a6d9a66e | 11144 | struct gdbarch *gdbarch = get_current_arch (); |
63160a43 | 11145 | const char *cond_string = NULL; |
44feb3ce TT |
11146 | catch_fork_kind fork_kind; |
11147 | int tempflag; | |
11148 | ||
11149 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11150 | tempflag = (fork_kind == catch_fork_temporary | |
11151 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11152 | |
44feb3ce TT |
11153 | if (!arg) |
11154 | arg = ""; | |
f1735a53 | 11155 | arg = skip_spaces (arg); |
c5aa993b | 11156 | |
c906108c | 11157 | /* The allowed syntax is: |
c5aa993b JM |
11158 | catch [v]fork |
11159 | catch [v]fork if <cond> | |
11160 | ||
4a64f543 | 11161 | First, check if there's an if clause. */ |
c906108c | 11162 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11163 | |
c906108c | 11164 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11165 | error (_("Junk at end of arguments.")); |
c5aa993b | 11166 | |
c906108c | 11167 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11168 | and enable reporting of such events. */ |
c5aa993b JM |
11169 | switch (fork_kind) |
11170 | { | |
44feb3ce TT |
11171 | case catch_fork_temporary: |
11172 | case catch_fork_permanent: | |
a6d9a66e | 11173 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11174 | &catch_fork_breakpoint_ops); |
c906108c | 11175 | break; |
44feb3ce TT |
11176 | case catch_vfork_temporary: |
11177 | case catch_vfork_permanent: | |
a6d9a66e | 11178 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11179 | &catch_vfork_breakpoint_ops); |
c906108c | 11180 | break; |
c5aa993b | 11181 | default: |
8a3fe4f8 | 11182 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11183 | break; |
c5aa993b | 11184 | } |
c906108c SS |
11185 | } |
11186 | ||
11187 | static void | |
eb4c3f4a | 11188 | catch_exec_command_1 (const char *arg, int from_tty, |
cc59ec59 | 11189 | struct cmd_list_element *command) |
c906108c | 11190 | { |
a6d9a66e | 11191 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11192 | int tempflag; |
63160a43 | 11193 | const char *cond_string = NULL; |
c906108c | 11194 | |
44feb3ce TT |
11195 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11196 | ||
11197 | if (!arg) | |
11198 | arg = ""; | |
f1735a53 | 11199 | arg = skip_spaces (arg); |
c906108c SS |
11200 | |
11201 | /* The allowed syntax is: | |
c5aa993b JM |
11202 | catch exec |
11203 | catch exec if <cond> | |
c906108c | 11204 | |
4a64f543 | 11205 | First, check if there's an if clause. */ |
c906108c SS |
11206 | cond_string = ep_parse_optional_if_clause (&arg); |
11207 | ||
11208 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11209 | error (_("Junk at end of arguments.")); |
c906108c | 11210 | |
b270e6f9 TT |
11211 | std::unique_ptr<exec_catchpoint> c (new exec_catchpoint ()); |
11212 | init_catchpoint (c.get (), gdbarch, tempflag, cond_string, | |
b4d90040 PA |
11213 | &catch_exec_breakpoint_ops); |
11214 | c->exec_pathname = NULL; | |
11215 | ||
b270e6f9 | 11216 | install_breakpoint (0, std::move (c), 1); |
c906108c | 11217 | } |
c5aa993b | 11218 | |
9ac4176b | 11219 | void |
28010a5d PA |
11220 | init_ada_exception_breakpoint (struct breakpoint *b, |
11221 | struct gdbarch *gdbarch, | |
11222 | struct symtab_and_line sal, | |
f2fc3015 | 11223 | const char *addr_string, |
c0a91b2b | 11224 | const struct breakpoint_ops *ops, |
28010a5d | 11225 | int tempflag, |
349774ef | 11226 | int enabled, |
28010a5d | 11227 | int from_tty) |
f7f9143b | 11228 | { |
f7f9143b JB |
11229 | if (from_tty) |
11230 | { | |
5af949e3 UW |
11231 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11232 | if (!loc_gdbarch) | |
11233 | loc_gdbarch = gdbarch; | |
11234 | ||
6c95b8df PA |
11235 | describe_other_breakpoints (loc_gdbarch, |
11236 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11237 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11238 | version for exception catchpoints, because two catchpoints | |
11239 | used for different exception names will use the same address. | |
11240 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11241 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11242 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11243 | the user what type of catchpoint it is. The above is good |
11244 | enough for now, though. */ | |
11245 | } | |
11246 | ||
f06f1252 | 11247 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
f7f9143b | 11248 | |
349774ef | 11249 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11250 | b->disposition = tempflag ? disp_del : disp_donttouch; |
d28cd78a TT |
11251 | b->location = string_to_event_location (&addr_string, |
11252 | language_def (language_ada)); | |
f7f9143b | 11253 | b->language = language_ada; |
f7f9143b JB |
11254 | } |
11255 | ||
c906108c | 11256 | static void |
981a3fb3 | 11257 | catch_command (const char *arg, int from_tty) |
c906108c | 11258 | { |
44feb3ce | 11259 | error (_("Catch requires an event name.")); |
c906108c SS |
11260 | } |
11261 | \f | |
11262 | ||
11263 | static void | |
981a3fb3 | 11264 | tcatch_command (const char *arg, int from_tty) |
c906108c | 11265 | { |
44feb3ce | 11266 | error (_("Catch requires an event name.")); |
c906108c SS |
11267 | } |
11268 | ||
81b1e71c | 11269 | /* Compare two breakpoints and return a strcmp-like result. */ |
8a2c437b TT |
11270 | |
11271 | static int | |
81b1e71c | 11272 | compare_breakpoints (const breakpoint *a, const breakpoint *b) |
8a2c437b | 11273 | { |
81b1e71c TT |
11274 | uintptr_t ua = (uintptr_t) a; |
11275 | uintptr_t ub = (uintptr_t) b; | |
8a2c437b | 11276 | |
81b1e71c | 11277 | if (a->number < b->number) |
8a2c437b | 11278 | return -1; |
81b1e71c | 11279 | else if (a->number > b->number) |
8a2c437b TT |
11280 | return 1; |
11281 | ||
11282 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11283 | the number 0. */ | |
11284 | if (ua < ub) | |
11285 | return -1; | |
94b0e70d | 11286 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11287 | } |
11288 | ||
80f8a6eb | 11289 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11290 | |
11291 | static void | |
0b39b52e | 11292 | clear_command (const char *arg, int from_tty) |
c906108c | 11293 | { |
81b1e71c | 11294 | struct breakpoint *b; |
c906108c | 11295 | int default_match; |
c906108c | 11296 | |
6c5b2ebe PA |
11297 | std::vector<symtab_and_line> decoded_sals; |
11298 | symtab_and_line last_sal; | |
11299 | gdb::array_view<symtab_and_line> sals; | |
c906108c SS |
11300 | if (arg) |
11301 | { | |
6c5b2ebe PA |
11302 | decoded_sals |
11303 | = decode_line_with_current_source (arg, | |
11304 | (DECODE_LINE_FUNFIRSTLINE | |
11305 | | DECODE_LINE_LIST_MODE)); | |
c906108c | 11306 | default_match = 0; |
6c5b2ebe | 11307 | sals = decoded_sals; |
c906108c SS |
11308 | } |
11309 | else | |
11310 | { | |
1bfeeb0f JL |
11311 | /* Set sal's line, symtab, pc, and pspace to the values |
11312 | corresponding to the last call to print_frame_info. If the | |
11313 | codepoint is not valid, this will set all the fields to 0. */ | |
51abb421 | 11314 | last_sal = get_last_displayed_sal (); |
6c5b2ebe | 11315 | if (last_sal.symtab == 0) |
8a3fe4f8 | 11316 | error (_("No source file specified.")); |
c906108c | 11317 | |
c906108c | 11318 | default_match = 1; |
6c5b2ebe | 11319 | sals = last_sal; |
c906108c SS |
11320 | } |
11321 | ||
4a64f543 MS |
11322 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11323 | seems, because all existing breakpoints typically have both | |
11324 | file/line and pc set. So, if clear is given file/line, we can | |
11325 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11326 | |
11327 | We only support clearing given the address explicitly | |
11328 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11329 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11330 | due to optimization, all in one block. |
4a64f543 MS |
11331 | |
11332 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11333 | PC corresponding to the same file:line, the breakpoint won't |
11334 | be cleared. We probably can still clear the breakpoint, but | |
11335 | since the other PC value is never presented to user, user | |
11336 | can only find it by guessing, and it does not seem important | |
11337 | to support that. */ | |
11338 | ||
4a64f543 MS |
11339 | /* For each line spec given, delete bps which correspond to it. Do |
11340 | it in two passes, solely to preserve the current behavior that | |
11341 | from_tty is forced true if we delete more than one | |
11342 | breakpoint. */ | |
c906108c | 11343 | |
81b1e71c | 11344 | std::vector<struct breakpoint *> found; |
6c5b2ebe | 11345 | for (const auto &sal : sals) |
c906108c | 11346 | { |
05cba821 JK |
11347 | const char *sal_fullname; |
11348 | ||
c906108c | 11349 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11350 | If line given (pc == 0), clear all bpts on specified line. |
11351 | If defaulting, clear all bpts on default line | |
c906108c | 11352 | or at default pc. |
c5aa993b JM |
11353 | |
11354 | defaulting sal.pc != 0 tests to do | |
11355 | ||
11356 | 0 1 pc | |
11357 | 1 1 pc _and_ line | |
11358 | 0 0 line | |
11359 | 1 0 <can't happen> */ | |
c906108c | 11360 | |
05cba821 JK |
11361 | sal_fullname = (sal.symtab == NULL |
11362 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11363 | |
4a64f543 | 11364 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11365 | ALL_BREAKPOINTS (b) |
c5aa993b | 11366 | { |
0d381245 | 11367 | int match = 0; |
4a64f543 | 11368 | /* Are we going to delete b? */ |
cc60f2e3 | 11369 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11370 | { |
11371 | struct bp_location *loc = b->loc; | |
11372 | for (; loc; loc = loc->next) | |
11373 | { | |
f8eba3c6 TT |
11374 | /* If the user specified file:line, don't allow a PC |
11375 | match. This matches historical gdb behavior. */ | |
11376 | int pc_match = (!sal.explicit_line | |
11377 | && sal.pc | |
11378 | && (loc->pspace == sal.pspace) | |
11379 | && (loc->address == sal.pc) | |
11380 | && (!section_is_overlay (loc->section) | |
11381 | || loc->section == sal.section)); | |
4aac40c8 TT |
11382 | int line_match = 0; |
11383 | ||
11384 | if ((default_match || sal.explicit_line) | |
2f202fde | 11385 | && loc->symtab != NULL |
05cba821 | 11386 | && sal_fullname != NULL |
4aac40c8 | 11387 | && sal.pspace == loc->pspace |
05cba821 JK |
11388 | && loc->line_number == sal.line |
11389 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11390 | sal_fullname) == 0) | |
11391 | line_match = 1; | |
4aac40c8 | 11392 | |
0d381245 VP |
11393 | if (pc_match || line_match) |
11394 | { | |
11395 | match = 1; | |
11396 | break; | |
11397 | } | |
11398 | } | |
11399 | } | |
11400 | ||
11401 | if (match) | |
81b1e71c | 11402 | found.push_back (b); |
c906108c | 11403 | } |
80f8a6eb | 11404 | } |
8a2c437b | 11405 | |
80f8a6eb | 11406 | /* Now go thru the 'found' chain and delete them. */ |
81b1e71c | 11407 | if (found.empty ()) |
80f8a6eb MS |
11408 | { |
11409 | if (arg) | |
8a3fe4f8 | 11410 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11411 | else |
8a3fe4f8 | 11412 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11413 | } |
c906108c | 11414 | |
8a2c437b | 11415 | /* Remove duplicates from the vec. */ |
81b1e71c | 11416 | std::sort (found.begin (), found.end (), |
b926417a | 11417 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11418 | { |
b926417a | 11419 | return compare_breakpoints (bp_a, bp_b) < 0; |
81b1e71c TT |
11420 | }); |
11421 | found.erase (std::unique (found.begin (), found.end (), | |
b926417a | 11422 | [] (const breakpoint *bp_a, const breakpoint *bp_b) |
81b1e71c | 11423 | { |
b926417a | 11424 | return compare_breakpoints (bp_a, bp_b) == 0; |
81b1e71c TT |
11425 | }), |
11426 | found.end ()); | |
8a2c437b | 11427 | |
81b1e71c | 11428 | if (found.size () > 1) |
4a64f543 | 11429 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11430 | if (from_tty) |
a3f17187 | 11431 | { |
81b1e71c | 11432 | if (found.size () == 1) |
a3f17187 AC |
11433 | printf_unfiltered (_("Deleted breakpoint ")); |
11434 | else | |
11435 | printf_unfiltered (_("Deleted breakpoints ")); | |
11436 | } | |
d6e956e5 | 11437 | |
81b1e71c | 11438 | for (breakpoint *iter : found) |
80f8a6eb | 11439 | { |
c5aa993b | 11440 | if (from_tty) |
81b1e71c TT |
11441 | printf_unfiltered ("%d ", iter->number); |
11442 | delete_breakpoint (iter); | |
c906108c | 11443 | } |
80f8a6eb MS |
11444 | if (from_tty) |
11445 | putchar_unfiltered ('\n'); | |
c906108c SS |
11446 | } |
11447 | \f | |
11448 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11449 | all breakpoints that are marked for deletion, whether hit or not. | |
11450 | This is called after any breakpoint is hit, or after errors. */ | |
11451 | ||
11452 | void | |
fba45db2 | 11453 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11454 | { |
35df4500 | 11455 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11456 | |
11457 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11458 | if (bs->breakpoint_at |
11459 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11460 | && bs->stop) |
f431efe5 | 11461 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11462 | |
35df4500 | 11463 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11464 | { |
b5de0fa7 | 11465 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11466 | delete_breakpoint (b); |
11467 | } | |
c906108c SS |
11468 | } |
11469 | ||
4a64f543 | 11470 | /* A comparison function for bp_location AP and BP being interfaced to |
39ef2f62 | 11471 | std::sort. Sort elements primarily by their ADDRESS (no matter what |
cb1e4e32 PA |
11472 | bl_address_is_meaningful says), secondarily by ordering first |
11473 | permanent elements and terciarily just ensuring the array is sorted | |
39ef2f62 | 11474 | stable way despite std::sort being an unstable algorithm. */ |
876fa593 JK |
11475 | |
11476 | static int | |
39ef2f62 | 11477 | bp_location_is_less_than (const bp_location *a, const bp_location *b) |
876fa593 | 11478 | { |
876fa593 | 11479 | if (a->address != b->address) |
39ef2f62 | 11480 | return a->address < b->address; |
876fa593 | 11481 | |
dea2aa5f LM |
11482 | /* Sort locations at the same address by their pspace number, keeping |
11483 | locations of the same inferior (in a multi-inferior environment) | |
11484 | grouped. */ | |
11485 | ||
11486 | if (a->pspace->num != b->pspace->num) | |
39ef2f62 | 11487 | return a->pspace->num < b->pspace->num; |
dea2aa5f | 11488 | |
876fa593 | 11489 | /* Sort permanent breakpoints first. */ |
1a853c52 | 11490 | if (a->permanent != b->permanent) |
39ef2f62 | 11491 | return a->permanent > b->permanent; |
876fa593 | 11492 | |
c56a97f9 JK |
11493 | /* Make the internal GDB representation stable across GDB runs |
11494 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11495 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11496 | |
11497 | if (a->owner->number != b->owner->number) | |
39ef2f62 | 11498 | return a->owner->number < b->owner->number; |
876fa593 | 11499 | |
39ef2f62 | 11500 | return a < b; |
876fa593 JK |
11501 | } |
11502 | ||
f5336ca5 PA |
11503 | /* Set bp_locations_placed_address_before_address_max and |
11504 | bp_locations_shadow_len_after_address_max according to the current | |
11505 | content of the bp_locations array. */ | |
f7545552 TT |
11506 | |
11507 | static void | |
f5336ca5 | 11508 | bp_locations_target_extensions_update (void) |
f7545552 | 11509 | { |
876fa593 JK |
11510 | struct bp_location *bl, **blp_tmp; |
11511 | ||
f5336ca5 PA |
11512 | bp_locations_placed_address_before_address_max = 0; |
11513 | bp_locations_shadow_len_after_address_max = 0; | |
876fa593 JK |
11514 | |
11515 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11516 | { | |
11517 | CORE_ADDR start, end, addr; | |
11518 | ||
11519 | if (!bp_location_has_shadow (bl)) | |
11520 | continue; | |
11521 | ||
11522 | start = bl->target_info.placed_address; | |
11523 | end = start + bl->target_info.shadow_len; | |
11524 | ||
11525 | gdb_assert (bl->address >= start); | |
11526 | addr = bl->address - start; | |
f5336ca5 PA |
11527 | if (addr > bp_locations_placed_address_before_address_max) |
11528 | bp_locations_placed_address_before_address_max = addr; | |
876fa593 JK |
11529 | |
11530 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11531 | ||
11532 | gdb_assert (bl->address < end); | |
11533 | addr = end - bl->address; | |
f5336ca5 PA |
11534 | if (addr > bp_locations_shadow_len_after_address_max) |
11535 | bp_locations_shadow_len_after_address_max = addr; | |
876fa593 | 11536 | } |
f7545552 TT |
11537 | } |
11538 | ||
1e4d1764 YQ |
11539 | /* Download tracepoint locations if they haven't been. */ |
11540 | ||
11541 | static void | |
11542 | download_tracepoint_locations (void) | |
11543 | { | |
7ed2c994 | 11544 | struct breakpoint *b; |
dd2e65cc | 11545 | enum tribool can_download_tracepoint = TRIBOOL_UNKNOWN; |
1e4d1764 | 11546 | |
5ed8105e | 11547 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
1e4d1764 | 11548 | |
7ed2c994 | 11549 | ALL_TRACEPOINTS (b) |
1e4d1764 | 11550 | { |
7ed2c994 | 11551 | struct bp_location *bl; |
1e4d1764 | 11552 | struct tracepoint *t; |
f2a8bc8a | 11553 | int bp_location_downloaded = 0; |
1e4d1764 | 11554 | |
7ed2c994 | 11555 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
11556 | ? !may_insert_fast_tracepoints |
11557 | : !may_insert_tracepoints)) | |
11558 | continue; | |
11559 | ||
dd2e65cc YQ |
11560 | if (can_download_tracepoint == TRIBOOL_UNKNOWN) |
11561 | { | |
11562 | if (target_can_download_tracepoint ()) | |
11563 | can_download_tracepoint = TRIBOOL_TRUE; | |
11564 | else | |
11565 | can_download_tracepoint = TRIBOOL_FALSE; | |
11566 | } | |
11567 | ||
11568 | if (can_download_tracepoint == TRIBOOL_FALSE) | |
11569 | break; | |
11570 | ||
7ed2c994 YQ |
11571 | for (bl = b->loc; bl; bl = bl->next) |
11572 | { | |
11573 | /* In tracepoint, locations are _never_ duplicated, so | |
11574 | should_be_inserted is equivalent to | |
11575 | unduplicated_should_be_inserted. */ | |
11576 | if (!should_be_inserted (bl) || bl->inserted) | |
11577 | continue; | |
1e4d1764 | 11578 | |
7ed2c994 | 11579 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 11580 | |
7ed2c994 | 11581 | target_download_tracepoint (bl); |
1e4d1764 | 11582 | |
7ed2c994 | 11583 | bl->inserted = 1; |
f2a8bc8a | 11584 | bp_location_downloaded = 1; |
7ed2c994 YQ |
11585 | } |
11586 | t = (struct tracepoint *) b; | |
11587 | t->number_on_target = b->number; | |
f2a8bc8a | 11588 | if (bp_location_downloaded) |
76727919 | 11589 | gdb::observers::breakpoint_modified.notify (b); |
1e4d1764 | 11590 | } |
1e4d1764 YQ |
11591 | } |
11592 | ||
934709f0 PW |
11593 | /* Swap the insertion/duplication state between two locations. */ |
11594 | ||
11595 | static void | |
11596 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11597 | { | |
11598 | const int left_inserted = left->inserted; | |
11599 | const int left_duplicate = left->duplicate; | |
b775012e | 11600 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11601 | const struct bp_target_info left_target_info = left->target_info; |
11602 | ||
1e4d1764 YQ |
11603 | /* Locations of tracepoints can never be duplicated. */ |
11604 | if (is_tracepoint (left->owner)) | |
11605 | gdb_assert (!left->duplicate); | |
11606 | if (is_tracepoint (right->owner)) | |
11607 | gdb_assert (!right->duplicate); | |
11608 | ||
934709f0 PW |
11609 | left->inserted = right->inserted; |
11610 | left->duplicate = right->duplicate; | |
b775012e | 11611 | left->needs_update = right->needs_update; |
934709f0 PW |
11612 | left->target_info = right->target_info; |
11613 | right->inserted = left_inserted; | |
11614 | right->duplicate = left_duplicate; | |
b775012e | 11615 | right->needs_update = left_needs_update; |
934709f0 PW |
11616 | right->target_info = left_target_info; |
11617 | } | |
11618 | ||
b775012e LM |
11619 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11620 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11621 | conditions on the target's side. Such conditions need to be updated on | |
11622 | the target. */ | |
11623 | ||
11624 | static void | |
11625 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11626 | { | |
11627 | struct bp_location **locp = NULL, **loc2p; | |
11628 | struct bp_location *loc; | |
11629 | CORE_ADDR address = 0; | |
11630 | int pspace_num; | |
11631 | ||
11632 | address = bl->address; | |
11633 | pspace_num = bl->pspace->num; | |
11634 | ||
11635 | /* This is only meaningful if the target is | |
11636 | evaluating conditions and if the user has | |
11637 | opted for condition evaluation on the target's | |
11638 | side. */ | |
11639 | if (gdb_evaluates_breakpoint_condition_p () | |
11640 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11641 | return; | |
11642 | ||
11643 | /* Flag all breakpoint locations with this address and | |
11644 | the same program space as the location | |
11645 | as "its condition has changed". We need to | |
11646 | update the conditions on the target's side. */ | |
11647 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11648 | { | |
11649 | loc = *loc2p; | |
11650 | ||
11651 | if (!is_breakpoint (loc->owner) | |
11652 | || pspace_num != loc->pspace->num) | |
11653 | continue; | |
11654 | ||
11655 | /* Flag the location appropriately. We use a different state to | |
11656 | let everyone know that we already updated the set of locations | |
11657 | with addr bl->address and program space bl->pspace. This is so | |
11658 | we don't have to keep calling these functions just to mark locations | |
11659 | that have already been marked. */ | |
11660 | loc->condition_changed = condition_updated; | |
11661 | ||
11662 | /* Free the agent expression bytecode as well. We will compute | |
11663 | it later on. */ | |
833177a4 | 11664 | loc->cond_bytecode.reset (); |
b775012e LM |
11665 | } |
11666 | } | |
44702360 PA |
11667 | /* Called whether new breakpoints are created, or existing breakpoints |
11668 | deleted, to update the global location list and recompute which | |
11669 | locations are duplicate of which. | |
b775012e | 11670 | |
04086b45 PA |
11671 | The INSERT_MODE flag determines whether locations may not, may, or |
11672 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
11673 | info. */ | |
b60e7edf | 11674 | |
0d381245 | 11675 | static void |
44702360 | 11676 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 11677 | { |
74960c60 | 11678 | struct breakpoint *b; |
876fa593 | 11679 | struct bp_location **locp, *loc; |
b775012e LM |
11680 | /* Last breakpoint location address that was marked for update. */ |
11681 | CORE_ADDR last_addr = 0; | |
11682 | /* Last breakpoint location program space that was marked for update. */ | |
11683 | int last_pspace_num = -1; | |
f7545552 | 11684 | |
2d134ed3 PA |
11685 | /* Used in the duplicates detection below. When iterating over all |
11686 | bp_locations, points to the first bp_location of a given address. | |
11687 | Breakpoints and watchpoints of different types are never | |
11688 | duplicates of each other. Keep one pointer for each type of | |
11689 | breakpoint/watchpoint, so we only need to loop over all locations | |
11690 | once. */ | |
11691 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11692 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11693 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11694 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11695 | |
f5336ca5 PA |
11696 | /* Saved former bp_locations array which we compare against the newly |
11697 | built bp_locations from the current state of ALL_BREAKPOINTS. */ | |
81b1e71c | 11698 | struct bp_location **old_locp; |
f5336ca5 | 11699 | unsigned old_locations_count; |
81b1e71c | 11700 | gdb::unique_xmalloc_ptr<struct bp_location *> old_locations (bp_locations); |
876fa593 | 11701 | |
f5336ca5 PA |
11702 | old_locations_count = bp_locations_count; |
11703 | bp_locations = NULL; | |
11704 | bp_locations_count = 0; | |
0d381245 | 11705 | |
74960c60 | 11706 | ALL_BREAKPOINTS (b) |
876fa593 | 11707 | for (loc = b->loc; loc; loc = loc->next) |
f5336ca5 | 11708 | bp_locations_count++; |
876fa593 | 11709 | |
f5336ca5 PA |
11710 | bp_locations = XNEWVEC (struct bp_location *, bp_locations_count); |
11711 | locp = bp_locations; | |
876fa593 JK |
11712 | ALL_BREAKPOINTS (b) |
11713 | for (loc = b->loc; loc; loc = loc->next) | |
11714 | *locp++ = loc; | |
39ef2f62 CB |
11715 | std::sort (bp_locations, bp_locations + bp_locations_count, |
11716 | bp_location_is_less_than); | |
876fa593 | 11717 | |
f5336ca5 | 11718 | bp_locations_target_extensions_update (); |
74960c60 | 11719 | |
4a64f543 MS |
11720 | /* Identify bp_location instances that are no longer present in the |
11721 | new list, and therefore should be freed. Note that it's not | |
11722 | necessary that those locations should be removed from inferior -- | |
11723 | if there's another location at the same address (previously | |
11724 | marked as duplicate), we don't need to remove/insert the | |
11725 | location. | |
876fa593 | 11726 | |
4a64f543 MS |
11727 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11728 | and former bp_location array state respectively. */ | |
876fa593 | 11729 | |
f5336ca5 | 11730 | locp = bp_locations; |
81b1e71c TT |
11731 | for (old_locp = old_locations.get (); |
11732 | old_locp < old_locations.get () + old_locations_count; | |
876fa593 | 11733 | old_locp++) |
74960c60 | 11734 | { |
876fa593 | 11735 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11736 | struct bp_location **loc2p; |
876fa593 | 11737 | |
e5dd4106 | 11738 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11739 | not, we have to free it. */ |
c7d46a38 | 11740 | int found_object = 0; |
20874c92 VP |
11741 | /* Tells if the location should remain inserted in the target. */ |
11742 | int keep_in_target = 0; | |
11743 | int removed = 0; | |
876fa593 | 11744 | |
4a64f543 MS |
11745 | /* Skip LOCP entries which will definitely never be needed. |
11746 | Stop either at or being the one matching OLD_LOC. */ | |
f5336ca5 | 11747 | while (locp < bp_locations + bp_locations_count |
c7d46a38 | 11748 | && (*locp)->address < old_loc->address) |
876fa593 | 11749 | locp++; |
c7d46a38 PA |
11750 | |
11751 | for (loc2p = locp; | |
f5336ca5 | 11752 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 PA |
11753 | && (*loc2p)->address == old_loc->address); |
11754 | loc2p++) | |
11755 | { | |
b775012e LM |
11756 | /* Check if this is a new/duplicated location or a duplicated |
11757 | location that had its condition modified. If so, we want to send | |
11758 | its condition to the target if evaluation of conditions is taking | |
11759 | place there. */ | |
11760 | if ((*loc2p)->condition_changed == condition_modified | |
11761 | && (last_addr != old_loc->address | |
11762 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11763 | { |
b775012e LM |
11764 | force_breakpoint_reinsertion (*loc2p); |
11765 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11766 | } |
b775012e LM |
11767 | |
11768 | if (*loc2p == old_loc) | |
11769 | found_object = 1; | |
c7d46a38 | 11770 | } |
74960c60 | 11771 | |
b775012e LM |
11772 | /* We have already handled this address, update it so that we don't |
11773 | have to go through updates again. */ | |
11774 | last_addr = old_loc->address; | |
11775 | ||
11776 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11777 | if (!found_object) | |
11778 | force_breakpoint_reinsertion (old_loc); | |
11779 | ||
4a64f543 MS |
11780 | /* If this location is no longer present, and inserted, look if |
11781 | there's maybe a new location at the same address. If so, | |
11782 | mark that one inserted, and don't remove this one. This is | |
11783 | needed so that we don't have a time window where a breakpoint | |
11784 | at certain location is not inserted. */ | |
74960c60 | 11785 | |
876fa593 | 11786 | if (old_loc->inserted) |
0d381245 | 11787 | { |
4a64f543 MS |
11788 | /* If the location is inserted now, we might have to remove |
11789 | it. */ | |
74960c60 | 11790 | |
876fa593 | 11791 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11792 | { |
4a64f543 MS |
11793 | /* The location is still present in the location list, |
11794 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11795 | keep_in_target = 1; |
74960c60 VP |
11796 | } |
11797 | else | |
11798 | { | |
b775012e LM |
11799 | /* This location still exists, but it won't be kept in the |
11800 | target since it may have been disabled. We proceed to | |
11801 | remove its target-side condition. */ | |
11802 | ||
4a64f543 MS |
11803 | /* The location is either no longer present, or got |
11804 | disabled. See if there's another location at the | |
11805 | same address, in which case we don't need to remove | |
11806 | this one from the target. */ | |
876fa593 | 11807 | |
2bdf28a0 | 11808 | /* OLD_LOC comes from existing struct breakpoint. */ |
cb1e4e32 | 11809 | if (bl_address_is_meaningful (old_loc)) |
876fa593 | 11810 | { |
876fa593 | 11811 | for (loc2p = locp; |
f5336ca5 | 11812 | (loc2p < bp_locations + bp_locations_count |
c7d46a38 | 11813 | && (*loc2p)->address == old_loc->address); |
876fa593 JK |
11814 | loc2p++) |
11815 | { | |
11816 | struct bp_location *loc2 = *loc2p; | |
11817 | ||
2d134ed3 | 11818 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11819 | { |
85d721b8 PA |
11820 | /* Read watchpoint locations are switched to |
11821 | access watchpoints, if the former are not | |
11822 | supported, but the latter are. */ | |
11823 | if (is_hardware_watchpoint (old_loc->owner)) | |
11824 | { | |
11825 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11826 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11827 | } | |
11828 | ||
934709f0 PW |
11829 | /* loc2 is a duplicated location. We need to check |
11830 | if it should be inserted in case it will be | |
11831 | unduplicated. */ | |
11832 | if (loc2 != old_loc | |
11833 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11834 | { |
934709f0 | 11835 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11836 | keep_in_target = 1; |
11837 | break; | |
11838 | } | |
876fa593 JK |
11839 | } |
11840 | } | |
11841 | } | |
74960c60 VP |
11842 | } |
11843 | ||
20874c92 VP |
11844 | if (!keep_in_target) |
11845 | { | |
834c0d03 | 11846 | if (remove_breakpoint (old_loc)) |
20874c92 | 11847 | { |
4a64f543 MS |
11848 | /* This is just about all we can do. We could keep |
11849 | this location on the global list, and try to | |
11850 | remove it next time, but there's no particular | |
11851 | reason why we will succeed next time. | |
20874c92 | 11852 | |
4a64f543 MS |
11853 | Note that at this point, old_loc->owner is still |
11854 | valid, as delete_breakpoint frees the breakpoint | |
11855 | only after calling us. */ | |
3e43a32a MS |
11856 | printf_filtered (_("warning: Error removing " |
11857 | "breakpoint %d\n"), | |
876fa593 | 11858 | old_loc->owner->number); |
20874c92 VP |
11859 | } |
11860 | removed = 1; | |
11861 | } | |
0d381245 | 11862 | } |
74960c60 VP |
11863 | |
11864 | if (!found_object) | |
1c5cfe86 | 11865 | { |
fbea99ea | 11866 | if (removed && target_is_non_stop_p () |
1cf4d951 | 11867 | && need_moribund_for_location_type (old_loc)) |
20874c92 | 11868 | { |
db82e815 PA |
11869 | /* This location was removed from the target. In |
11870 | non-stop mode, a race condition is possible where | |
11871 | we've removed a breakpoint, but stop events for that | |
11872 | breakpoint are already queued and will arrive later. | |
11873 | We apply an heuristic to be able to distinguish such | |
11874 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11875 | breakpoint location for a bit, and will retire it | |
11876 | after we see some number of events. The theory here | |
11877 | is that reporting of events should, "on the average", | |
11878 | be fair, so after a while we'll see events from all | |
11879 | threads that have anything of interest, and no longer | |
11880 | need to keep this breakpoint location around. We | |
11881 | don't hold locations forever so to reduce chances of | |
11882 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11883 | SIGTRAP. | |
11884 | ||
11885 | The heuristic failing can be disastrous on | |
11886 | decr_pc_after_break targets. | |
11887 | ||
11888 | On decr_pc_after_break targets, like e.g., x86-linux, | |
11889 | if we fail to recognize a late breakpoint SIGTRAP, | |
11890 | because events_till_retirement has reached 0 too | |
11891 | soon, we'll fail to do the PC adjustment, and report | |
11892 | a random SIGTRAP to the user. When the user resumes | |
11893 | the inferior, it will most likely immediately crash | |
2dec564e | 11894 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
11895 | corrupted, because of being resumed e.g., in the |
11896 | middle of a multi-byte instruction, or skipped a | |
11897 | one-byte instruction. This was actually seen happen | |
11898 | on native x86-linux, and should be less rare on | |
11899 | targets that do not support new thread events, like | |
11900 | remote, due to the heuristic depending on | |
11901 | thread_count. | |
11902 | ||
11903 | Mistaking a random SIGTRAP for a breakpoint trap | |
11904 | causes similar symptoms (PC adjustment applied when | |
11905 | it shouldn't), but then again, playing with SIGTRAPs | |
11906 | behind the debugger's back is asking for trouble. | |
11907 | ||
11908 | Since hardware watchpoint traps are always | |
11909 | distinguishable from other traps, so we don't need to | |
11910 | apply keep hardware watchpoint moribund locations | |
11911 | around. We simply always ignore hardware watchpoint | |
11912 | traps we can no longer explain. */ | |
11913 | ||
5b6d1e4f PA |
11914 | process_stratum_target *proc_target = nullptr; |
11915 | for (inferior *inf : all_inferiors ()) | |
11916 | if (inf->pspace == old_loc->pspace) | |
11917 | { | |
11918 | proc_target = inf->process_target (); | |
11919 | break; | |
11920 | } | |
11921 | if (proc_target != nullptr) | |
11922 | old_loc->events_till_retirement | |
11923 | = 3 * (thread_count (proc_target) + 1); | |
11924 | else | |
11925 | old_loc->events_till_retirement = 1; | |
876fa593 | 11926 | old_loc->owner = NULL; |
20874c92 | 11927 | |
1123588c | 11928 | moribund_locations.push_back (old_loc); |
1c5cfe86 PA |
11929 | } |
11930 | else | |
f431efe5 PA |
11931 | { |
11932 | old_loc->owner = NULL; | |
11933 | decref_bp_location (&old_loc); | |
11934 | } | |
20874c92 | 11935 | } |
74960c60 | 11936 | } |
1c5cfe86 | 11937 | |
348d480f PA |
11938 | /* Rescan breakpoints at the same address and section, marking the |
11939 | first one as "first" and any others as "duplicates". This is so | |
11940 | that the bpt instruction is only inserted once. If we have a | |
11941 | permanent breakpoint at the same place as BPT, make that one the | |
11942 | official one, and the rest as duplicates. Permanent breakpoints | |
11943 | are sorted first for the same address. | |
11944 | ||
11945 | Do the same for hardware watchpoints, but also considering the | |
11946 | watchpoint's type (regular/access/read) and length. */ | |
11947 | ||
11948 | bp_loc_first = NULL; | |
11949 | wp_loc_first = NULL; | |
11950 | awp_loc_first = NULL; | |
11951 | rwp_loc_first = NULL; | |
11952 | ALL_BP_LOCATIONS (loc, locp) | |
11953 | { | |
11954 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
11955 | non-NULL. */ | |
348d480f | 11956 | struct bp_location **loc_first_p; |
d3fbdd86 | 11957 | b = loc->owner; |
348d480f | 11958 | |
6f380991 | 11959 | if (!unduplicated_should_be_inserted (loc) |
cb1e4e32 | 11960 | || !bl_address_is_meaningful (loc) |
1e4d1764 YQ |
11961 | /* Don't detect duplicate for tracepoint locations because they are |
11962 | never duplicated. See the comments in field `duplicate' of | |
11963 | `struct bp_location'. */ | |
348d480f | 11964 | || is_tracepoint (b)) |
b775012e LM |
11965 | { |
11966 | /* Clear the condition modification flag. */ | |
11967 | loc->condition_changed = condition_unchanged; | |
11968 | continue; | |
11969 | } | |
348d480f | 11970 | |
348d480f PA |
11971 | if (b->type == bp_hardware_watchpoint) |
11972 | loc_first_p = &wp_loc_first; | |
11973 | else if (b->type == bp_read_watchpoint) | |
11974 | loc_first_p = &rwp_loc_first; | |
11975 | else if (b->type == bp_access_watchpoint) | |
11976 | loc_first_p = &awp_loc_first; | |
11977 | else | |
11978 | loc_first_p = &bp_loc_first; | |
11979 | ||
11980 | if (*loc_first_p == NULL | |
11981 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
11982 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
11983 | { | |
11984 | *loc_first_p = loc; | |
11985 | loc->duplicate = 0; | |
b775012e LM |
11986 | |
11987 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
11988 | { | |
11989 | loc->needs_update = 1; | |
11990 | /* Clear the condition modification flag. */ | |
11991 | loc->condition_changed = condition_unchanged; | |
11992 | } | |
348d480f PA |
11993 | continue; |
11994 | } | |
11995 | ||
934709f0 PW |
11996 | |
11997 | /* This and the above ensure the invariant that the first location | |
11998 | is not duplicated, and is the inserted one. | |
11999 | All following are marked as duplicated, and are not inserted. */ | |
12000 | if (loc->inserted) | |
12001 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12002 | loc->duplicate = 1; |
12003 | ||
b775012e LM |
12004 | /* Clear the condition modification flag. */ |
12005 | loc->condition_changed = condition_unchanged; | |
348d480f PA |
12006 | } |
12007 | ||
a25a5a45 | 12008 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12009 | { |
04086b45 | 12010 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12011 | insert_breakpoint_locations (); |
12012 | else | |
12013 | { | |
44702360 PA |
12014 | /* Even though the caller told us to not insert new |
12015 | locations, we may still need to update conditions on the | |
12016 | target's side of breakpoints that were already inserted | |
12017 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12018 | only update conditions for locations that are marked |
12019 | "needs_update". */ | |
12020 | update_inserted_breakpoint_locations (); | |
12021 | } | |
12022 | } | |
348d480f | 12023 | |
04086b45 | 12024 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 | 12025 | download_tracepoint_locations (); |
348d480f PA |
12026 | } |
12027 | ||
12028 | void | |
12029 | breakpoint_retire_moribund (void) | |
12030 | { | |
1123588c TT |
12031 | for (int ix = 0; ix < moribund_locations.size (); ++ix) |
12032 | { | |
12033 | struct bp_location *loc = moribund_locations[ix]; | |
12034 | if (--(loc->events_till_retirement) == 0) | |
12035 | { | |
12036 | decref_bp_location (&loc); | |
12037 | unordered_remove (moribund_locations, ix); | |
12038 | --ix; | |
12039 | } | |
12040 | } | |
348d480f PA |
12041 | } |
12042 | ||
12043 | static void | |
44702360 | 12044 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 12045 | { |
348d480f | 12046 | |
a70b8144 | 12047 | try |
492d29ea PA |
12048 | { |
12049 | update_global_location_list (insert_mode); | |
12050 | } | |
230d2906 | 12051 | catch (const gdb_exception_error &e) |
492d29ea PA |
12052 | { |
12053 | } | |
348d480f PA |
12054 | } |
12055 | ||
12056 | /* Clear BKP from a BPS. */ | |
12057 | ||
12058 | static void | |
12059 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12060 | { | |
12061 | bpstat bs; | |
12062 | ||
12063 | for (bs = bps; bs; bs = bs->next) | |
12064 | if (bs->breakpoint_at == bpt) | |
12065 | { | |
12066 | bs->breakpoint_at = NULL; | |
12067 | bs->old_val = NULL; | |
12068 | /* bs->commands will be freed later. */ | |
12069 | } | |
12070 | } | |
12071 | ||
12072 | /* Callback for iterate_over_threads. */ | |
12073 | static int | |
12074 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12075 | { | |
9a3c8263 | 12076 | struct breakpoint *bpt = (struct breakpoint *) data; |
348d480f PA |
12077 | |
12078 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12079 | return 0; | |
12080 | } | |
12081 | ||
12082 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12083 | callbacks. */ | |
12084 | ||
12085 | static void | |
12086 | say_where (struct breakpoint *b) | |
12087 | { | |
12088 | struct value_print_options opts; | |
12089 | ||
12090 | get_user_print_options (&opts); | |
12091 | ||
12092 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12093 | single string. */ | |
12094 | if (b->loc == NULL) | |
12095 | { | |
f00aae0f KS |
12096 | /* For pending locations, the output differs slightly based |
12097 | on b->extra_string. If this is non-NULL, it contains either | |
12098 | a condition or dprintf arguments. */ | |
12099 | if (b->extra_string == NULL) | |
12100 | { | |
12101 | printf_filtered (_(" (%s) pending."), | |
d28cd78a | 12102 | event_location_to_string (b->location.get ())); |
f00aae0f KS |
12103 | } |
12104 | else if (b->type == bp_dprintf) | |
12105 | { | |
12106 | printf_filtered (_(" (%s,%s) pending."), | |
d28cd78a | 12107 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12108 | b->extra_string); |
12109 | } | |
12110 | else | |
12111 | { | |
12112 | printf_filtered (_(" (%s %s) pending."), | |
d28cd78a | 12113 | event_location_to_string (b->location.get ()), |
f00aae0f KS |
12114 | b->extra_string); |
12115 | } | |
348d480f PA |
12116 | } |
12117 | else | |
12118 | { | |
2f202fde | 12119 | if (opts.addressprint || b->loc->symtab == NULL) |
6a831f06 PA |
12120 | printf_filtered (" at %ps", |
12121 | styled_string (address_style.style (), | |
12122 | paddress (b->loc->gdbarch, | |
12123 | b->loc->address))); | |
2f202fde | 12124 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12125 | { |
12126 | /* If there is a single location, we can print the location | |
12127 | more nicely. */ | |
12128 | if (b->loc->next == NULL) | |
0bb296cb | 12129 | { |
6a831f06 PA |
12130 | const char *filename |
12131 | = symtab_to_filename_for_display (b->loc->symtab); | |
12132 | printf_filtered (": file %ps, line %d.", | |
12133 | styled_string (file_name_style.style (), | |
12134 | filename), | |
0bb296cb TT |
12135 | b->loc->line_number); |
12136 | } | |
f8eba3c6 TT |
12137 | else |
12138 | /* This is not ideal, but each location may have a | |
12139 | different file name, and this at least reflects the | |
12140 | real situation somewhat. */ | |
f00aae0f | 12141 | printf_filtered (": %s.", |
d28cd78a | 12142 | event_location_to_string (b->location.get ())); |
f8eba3c6 | 12143 | } |
348d480f PA |
12144 | |
12145 | if (b->loc->next) | |
12146 | { | |
12147 | struct bp_location *loc = b->loc; | |
12148 | int n = 0; | |
12149 | for (; loc; loc = loc->next) | |
12150 | ++n; | |
12151 | printf_filtered (" (%d locations)", n); | |
12152 | } | |
12153 | } | |
12154 | } | |
12155 | ||
5f486660 | 12156 | bp_location::~bp_location () |
348d480f | 12157 | { |
5f486660 | 12158 | xfree (function_name); |
348d480f PA |
12159 | } |
12160 | ||
c1fc2657 | 12161 | /* Destructor for the breakpoint base class. */ |
348d480f | 12162 | |
c1fc2657 | 12163 | breakpoint::~breakpoint () |
348d480f | 12164 | { |
c1fc2657 SM |
12165 | xfree (this->cond_string); |
12166 | xfree (this->extra_string); | |
348d480f PA |
12167 | } |
12168 | ||
2060206e PA |
12169 | static struct bp_location * |
12170 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f | 12171 | { |
5f486660 | 12172 | return new bp_location (self); |
348d480f PA |
12173 | } |
12174 | ||
2060206e PA |
12175 | static void |
12176 | base_breakpoint_re_set (struct breakpoint *b) | |
12177 | { | |
12178 | /* Nothing to re-set. */ | |
12179 | } | |
12180 | ||
12181 | #define internal_error_pure_virtual_called() \ | |
12182 | gdb_assert_not_reached ("pure virtual function called") | |
12183 | ||
12184 | static int | |
12185 | base_breakpoint_insert_location (struct bp_location *bl) | |
12186 | { | |
12187 | internal_error_pure_virtual_called (); | |
12188 | } | |
12189 | ||
12190 | static int | |
73971819 PA |
12191 | base_breakpoint_remove_location (struct bp_location *bl, |
12192 | enum remove_bp_reason reason) | |
2060206e PA |
12193 | { |
12194 | internal_error_pure_virtual_called (); | |
12195 | } | |
12196 | ||
12197 | static int | |
12198 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12199 | const address_space *aspace, |
09ac7c10 TT |
12200 | CORE_ADDR bp_addr, |
12201 | const struct target_waitstatus *ws) | |
2060206e PA |
12202 | { |
12203 | internal_error_pure_virtual_called (); | |
12204 | } | |
12205 | ||
12206 | static void | |
12207 | base_breakpoint_check_status (bpstat bs) | |
12208 | { | |
12209 | /* Always stop. */ | |
12210 | } | |
12211 | ||
12212 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12213 | errors. */ | |
12214 | ||
12215 | static int | |
12216 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12217 | { | |
12218 | internal_error_pure_virtual_called (); | |
12219 | } | |
12220 | ||
12221 | /* A "resources_needed" breakpoint_ops method that just internal | |
12222 | errors. */ | |
12223 | ||
12224 | static int | |
12225 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12226 | { | |
12227 | internal_error_pure_virtual_called (); | |
12228 | } | |
12229 | ||
12230 | static enum print_stop_action | |
12231 | base_breakpoint_print_it (bpstat bs) | |
12232 | { | |
12233 | internal_error_pure_virtual_called (); | |
12234 | } | |
12235 | ||
12236 | static void | |
12237 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12238 | struct ui_out *uiout) | |
12239 | { | |
12240 | /* nothing */ | |
12241 | } | |
12242 | ||
12243 | static void | |
12244 | base_breakpoint_print_mention (struct breakpoint *b) | |
12245 | { | |
12246 | internal_error_pure_virtual_called (); | |
12247 | } | |
12248 | ||
12249 | static void | |
12250 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12251 | { | |
12252 | internal_error_pure_virtual_called (); | |
12253 | } | |
12254 | ||
983af33b | 12255 | static void |
f00aae0f KS |
12256 | base_breakpoint_create_sals_from_location |
12257 | (const struct event_location *location, | |
12258 | struct linespec_result *canonical, | |
12259 | enum bptype type_wanted) | |
983af33b SDJ |
12260 | { |
12261 | internal_error_pure_virtual_called (); | |
12262 | } | |
12263 | ||
12264 | static void | |
12265 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12266 | struct linespec_result *c, | |
e1e01040 PA |
12267 | gdb::unique_xmalloc_ptr<char> cond_string, |
12268 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12269 | enum bptype type_wanted, |
12270 | enum bpdisp disposition, | |
12271 | int thread, | |
12272 | int task, int ignore_count, | |
12273 | const struct breakpoint_ops *o, | |
12274 | int from_tty, int enabled, | |
44f238bb | 12275 | int internal, unsigned flags) |
983af33b SDJ |
12276 | { |
12277 | internal_error_pure_virtual_called (); | |
12278 | } | |
12279 | ||
6c5b2ebe | 12280 | static std::vector<symtab_and_line> |
f00aae0f KS |
12281 | base_breakpoint_decode_location (struct breakpoint *b, |
12282 | const struct event_location *location, | |
6c5b2ebe | 12283 | struct program_space *search_pspace) |
983af33b SDJ |
12284 | { |
12285 | internal_error_pure_virtual_called (); | |
12286 | } | |
12287 | ||
ab04a2af TT |
12288 | /* The default 'explains_signal' method. */ |
12289 | ||
47591c29 | 12290 | static int |
427cd150 | 12291 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 12292 | { |
47591c29 | 12293 | return 1; |
ab04a2af TT |
12294 | } |
12295 | ||
9d6e6e84 HZ |
12296 | /* The default "after_condition_true" method. */ |
12297 | ||
12298 | static void | |
12299 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
12300 | { | |
12301 | /* Nothing to do. */ | |
12302 | } | |
12303 | ||
ab04a2af | 12304 | struct breakpoint_ops base_breakpoint_ops = |
2060206e | 12305 | { |
2060206e PA |
12306 | base_breakpoint_allocate_location, |
12307 | base_breakpoint_re_set, | |
12308 | base_breakpoint_insert_location, | |
12309 | base_breakpoint_remove_location, | |
12310 | base_breakpoint_breakpoint_hit, | |
12311 | base_breakpoint_check_status, | |
12312 | base_breakpoint_resources_needed, | |
12313 | base_breakpoint_works_in_software_mode, | |
12314 | base_breakpoint_print_it, | |
12315 | NULL, | |
12316 | base_breakpoint_print_one_detail, | |
12317 | base_breakpoint_print_mention, | |
983af33b | 12318 | base_breakpoint_print_recreate, |
5f700d83 | 12319 | base_breakpoint_create_sals_from_location, |
983af33b | 12320 | base_breakpoint_create_breakpoints_sal, |
5f700d83 | 12321 | base_breakpoint_decode_location, |
9d6e6e84 HZ |
12322 | base_breakpoint_explains_signal, |
12323 | base_breakpoint_after_condition_true, | |
2060206e PA |
12324 | }; |
12325 | ||
12326 | /* Default breakpoint_ops methods. */ | |
12327 | ||
12328 | static void | |
348d480f PA |
12329 | bkpt_re_set (struct breakpoint *b) |
12330 | { | |
06edf0c0 | 12331 | /* FIXME: is this still reachable? */ |
9ef9e6a6 | 12332 | if (breakpoint_event_location_empty_p (b)) |
06edf0c0 | 12333 | { |
f00aae0f | 12334 | /* Anything without a location can't be re-set. */ |
348d480f | 12335 | delete_breakpoint (b); |
06edf0c0 | 12336 | return; |
348d480f | 12337 | } |
06edf0c0 PA |
12338 | |
12339 | breakpoint_re_set_default (b); | |
348d480f PA |
12340 | } |
12341 | ||
2060206e | 12342 | static int |
348d480f PA |
12343 | bkpt_insert_location (struct bp_location *bl) |
12344 | { | |
cd6c3b4f YQ |
12345 | CORE_ADDR addr = bl->target_info.reqstd_address; |
12346 | ||
579c6ad9 | 12347 | bl->target_info.kind = breakpoint_kind (bl, &addr); |
cd6c3b4f YQ |
12348 | bl->target_info.placed_address = addr; |
12349 | ||
348d480f | 12350 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
7c16b83e | 12351 | return target_insert_hw_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f | 12352 | else |
7c16b83e | 12353 | return target_insert_breakpoint (bl->gdbarch, &bl->target_info); |
348d480f PA |
12354 | } |
12355 | ||
2060206e | 12356 | static int |
73971819 | 12357 | bkpt_remove_location (struct bp_location *bl, enum remove_bp_reason reason) |
348d480f PA |
12358 | { |
12359 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12360 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12361 | else | |
73971819 | 12362 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info, reason); |
348d480f PA |
12363 | } |
12364 | ||
2060206e | 12365 | static int |
348d480f | 12366 | bkpt_breakpoint_hit (const struct bp_location *bl, |
bd522513 | 12367 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12368 | const struct target_waitstatus *ws) |
348d480f | 12369 | { |
09ac7c10 | 12370 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12371 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12372 | return 0; |
12373 | ||
348d480f PA |
12374 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12375 | aspace, bp_addr)) | |
12376 | return 0; | |
12377 | ||
12378 | if (overlay_debugging /* unmapped overlay section */ | |
12379 | && section_is_overlay (bl->section) | |
12380 | && !section_is_mapped (bl->section)) | |
12381 | return 0; | |
12382 | ||
12383 | return 1; | |
12384 | } | |
12385 | ||
cd1608cc PA |
12386 | static int |
12387 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12388 | const address_space *aspace, CORE_ADDR bp_addr, |
cd1608cc PA |
12389 | const struct target_waitstatus *ws) |
12390 | { | |
12391 | if (dprintf_style == dprintf_style_agent | |
12392 | && target_can_run_breakpoint_commands ()) | |
12393 | { | |
12394 | /* An agent-style dprintf never causes a stop. If we see a trap | |
12395 | for this address it must be for a breakpoint that happens to | |
12396 | be set at the same address. */ | |
12397 | return 0; | |
12398 | } | |
12399 | ||
12400 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
12401 | } | |
12402 | ||
2060206e | 12403 | static int |
348d480f PA |
12404 | bkpt_resources_needed (const struct bp_location *bl) |
12405 | { | |
12406 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12407 | ||
12408 | return 1; | |
12409 | } | |
12410 | ||
2060206e | 12411 | static enum print_stop_action |
348d480f PA |
12412 | bkpt_print_it (bpstat bs) |
12413 | { | |
348d480f PA |
12414 | struct breakpoint *b; |
12415 | const struct bp_location *bl; | |
001c8c33 | 12416 | int bp_temp; |
79a45e25 | 12417 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12418 | |
12419 | gdb_assert (bs->bp_location_at != NULL); | |
12420 | ||
12421 | bl = bs->bp_location_at; | |
12422 | b = bs->breakpoint_at; | |
12423 | ||
001c8c33 PA |
12424 | bp_temp = b->disposition == disp_del; |
12425 | if (bl->address != bl->requested_address) | |
12426 | breakpoint_adjustment_warning (bl->requested_address, | |
12427 | bl->address, | |
12428 | b->number, 1); | |
12429 | annotate_breakpoint (b->number); | |
f303dbd6 PA |
12430 | maybe_print_thread_hit_breakpoint (uiout); |
12431 | ||
112e8700 | 12432 | if (uiout->is_mi_like_p ()) |
348d480f | 12433 | { |
112e8700 | 12434 | uiout->field_string ("reason", |
001c8c33 | 12435 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); |
112e8700 | 12436 | uiout->field_string ("disp", bpdisp_text (b->disposition)); |
06edf0c0 | 12437 | } |
6a831f06 PA |
12438 | if (bp_temp) |
12439 | uiout->message ("Temporary breakpoint %pF, ", | |
12440 | signed_field ("bkptno", b->number)); | |
12441 | else | |
12442 | uiout->message ("Breakpoint %pF, ", | |
12443 | signed_field ("bkptno", b->number)); | |
06edf0c0 | 12444 | |
001c8c33 | 12445 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12446 | } |
12447 | ||
2060206e | 12448 | static void |
06edf0c0 PA |
12449 | bkpt_print_mention (struct breakpoint *b) |
12450 | { | |
112e8700 | 12451 | if (current_uiout->is_mi_like_p ()) |
06edf0c0 PA |
12452 | return; |
12453 | ||
12454 | switch (b->type) | |
12455 | { | |
12456 | case bp_breakpoint: | |
12457 | case bp_gnu_ifunc_resolver: | |
12458 | if (b->disposition == disp_del) | |
12459 | printf_filtered (_("Temporary breakpoint")); | |
12460 | else | |
12461 | printf_filtered (_("Breakpoint")); | |
12462 | printf_filtered (_(" %d"), b->number); | |
12463 | if (b->type == bp_gnu_ifunc_resolver) | |
12464 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12465 | break; | |
12466 | case bp_hardware_breakpoint: | |
12467 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12468 | break; | |
e7e0cddf SS |
12469 | case bp_dprintf: |
12470 | printf_filtered (_("Dprintf %d"), b->number); | |
12471 | break; | |
06edf0c0 PA |
12472 | } |
12473 | ||
12474 | say_where (b); | |
12475 | } | |
12476 | ||
2060206e | 12477 | static void |
06edf0c0 PA |
12478 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12479 | { | |
12480 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12481 | fprintf_unfiltered (fp, "tbreak"); | |
12482 | else if (tp->type == bp_breakpoint) | |
12483 | fprintf_unfiltered (fp, "break"); | |
12484 | else if (tp->type == bp_hardware_breakpoint | |
12485 | && tp->disposition == disp_del) | |
12486 | fprintf_unfiltered (fp, "thbreak"); | |
12487 | else if (tp->type == bp_hardware_breakpoint) | |
12488 | fprintf_unfiltered (fp, "hbreak"); | |
12489 | else | |
12490 | internal_error (__FILE__, __LINE__, | |
12491 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12492 | ||
f00aae0f | 12493 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12494 | event_location_to_string (tp->location.get ())); |
f00aae0f KS |
12495 | |
12496 | /* Print out extra_string if this breakpoint is pending. It might | |
12497 | contain, for example, conditions that were set by the user. */ | |
12498 | if (tp->loc == NULL && tp->extra_string != NULL) | |
12499 | fprintf_unfiltered (fp, " %s", tp->extra_string); | |
12500 | ||
dd11a36c | 12501 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12502 | } |
12503 | ||
983af33b | 12504 | static void |
f00aae0f KS |
12505 | bkpt_create_sals_from_location (const struct event_location *location, |
12506 | struct linespec_result *canonical, | |
12507 | enum bptype type_wanted) | |
983af33b | 12508 | { |
f00aae0f | 12509 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12510 | } |
12511 | ||
12512 | static void | |
12513 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12514 | struct linespec_result *canonical, | |
e1e01040 PA |
12515 | gdb::unique_xmalloc_ptr<char> cond_string, |
12516 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12517 | enum bptype type_wanted, |
12518 | enum bpdisp disposition, | |
12519 | int thread, | |
12520 | int task, int ignore_count, | |
12521 | const struct breakpoint_ops *ops, | |
12522 | int from_tty, int enabled, | |
44f238bb | 12523 | int internal, unsigned flags) |
983af33b | 12524 | { |
023fa29b | 12525 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12526 | std::move (cond_string), |
12527 | std::move (extra_string), | |
e7e0cddf | 12528 | type_wanted, |
983af33b SDJ |
12529 | disposition, thread, task, |
12530 | ignore_count, ops, from_tty, | |
44f238bb | 12531 | enabled, internal, flags); |
983af33b SDJ |
12532 | } |
12533 | ||
6c5b2ebe | 12534 | static std::vector<symtab_and_line> |
f00aae0f KS |
12535 | bkpt_decode_location (struct breakpoint *b, |
12536 | const struct event_location *location, | |
6c5b2ebe | 12537 | struct program_space *search_pspace) |
983af33b | 12538 | { |
6c5b2ebe | 12539 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12540 | } |
12541 | ||
06edf0c0 PA |
12542 | /* Virtual table for internal breakpoints. */ |
12543 | ||
12544 | static void | |
12545 | internal_bkpt_re_set (struct breakpoint *b) | |
12546 | { | |
12547 | switch (b->type) | |
12548 | { | |
12549 | /* Delete overlay event and longjmp master breakpoints; they | |
12550 | will be reset later by breakpoint_re_set. */ | |
12551 | case bp_overlay_event: | |
12552 | case bp_longjmp_master: | |
12553 | case bp_std_terminate_master: | |
12554 | case bp_exception_master: | |
12555 | delete_breakpoint (b); | |
12556 | break; | |
12557 | ||
12558 | /* This breakpoint is special, it's set up when the inferior | |
12559 | starts and we really don't want to touch it. */ | |
12560 | case bp_shlib_event: | |
12561 | ||
12562 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12563 | it is set up, we do not want to touch it. */ | |
12564 | case bp_thread_event: | |
12565 | break; | |
12566 | } | |
12567 | } | |
12568 | ||
12569 | static void | |
12570 | internal_bkpt_check_status (bpstat bs) | |
12571 | { | |
a9b3a50f PA |
12572 | if (bs->breakpoint_at->type == bp_shlib_event) |
12573 | { | |
12574 | /* If requested, stop when the dynamic linker notifies GDB of | |
12575 | events. This allows the user to get control and place | |
12576 | breakpoints in initializer routines for dynamically loaded | |
12577 | objects (among other things). */ | |
12578 | bs->stop = stop_on_solib_events; | |
12579 | bs->print = stop_on_solib_events; | |
12580 | } | |
12581 | else | |
12582 | bs->stop = 0; | |
06edf0c0 PA |
12583 | } |
12584 | ||
12585 | static enum print_stop_action | |
12586 | internal_bkpt_print_it (bpstat bs) | |
12587 | { | |
06edf0c0 | 12588 | struct breakpoint *b; |
06edf0c0 | 12589 | |
06edf0c0 PA |
12590 | b = bs->breakpoint_at; |
12591 | ||
06edf0c0 PA |
12592 | switch (b->type) |
12593 | { | |
348d480f PA |
12594 | case bp_shlib_event: |
12595 | /* Did we stop because the user set the stop_on_solib_events | |
12596 | variable? (If so, we report this as a generic, "Stopped due | |
12597 | to shlib event" message.) */ | |
edcc5120 | 12598 | print_solib_event (0); |
348d480f PA |
12599 | break; |
12600 | ||
12601 | case bp_thread_event: | |
12602 | /* Not sure how we will get here. | |
12603 | GDB should not stop for these breakpoints. */ | |
12604 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12605 | break; |
12606 | ||
12607 | case bp_overlay_event: | |
12608 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12609 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12610 | break; |
12611 | ||
12612 | case bp_longjmp_master: | |
12613 | /* These should never be enabled. */ | |
12614 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12615 | break; |
12616 | ||
12617 | case bp_std_terminate_master: | |
12618 | /* These should never be enabled. */ | |
12619 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12620 | "gdb should not stop!\n")); | |
348d480f PA |
12621 | break; |
12622 | ||
12623 | case bp_exception_master: | |
12624 | /* These should never be enabled. */ | |
12625 | printf_filtered (_("Exception Master Breakpoint: " | |
12626 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12627 | break; |
12628 | } | |
12629 | ||
001c8c33 | 12630 | return PRINT_NOTHING; |
06edf0c0 PA |
12631 | } |
12632 | ||
12633 | static void | |
12634 | internal_bkpt_print_mention (struct breakpoint *b) | |
12635 | { | |
12636 | /* Nothing to mention. These breakpoints are internal. */ | |
12637 | } | |
12638 | ||
06edf0c0 PA |
12639 | /* Virtual table for momentary breakpoints */ |
12640 | ||
12641 | static void | |
12642 | momentary_bkpt_re_set (struct breakpoint *b) | |
12643 | { | |
12644 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 12645 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
12646 | Otherwise these should have been blown away via the cleanup chain |
12647 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12648 | } | |
12649 | ||
12650 | static void | |
12651 | momentary_bkpt_check_status (bpstat bs) | |
12652 | { | |
12653 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12654 | } | |
12655 | ||
12656 | static enum print_stop_action | |
12657 | momentary_bkpt_print_it (bpstat bs) | |
12658 | { | |
001c8c33 | 12659 | return PRINT_UNKNOWN; |
348d480f PA |
12660 | } |
12661 | ||
06edf0c0 PA |
12662 | static void |
12663 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12664 | { |
06edf0c0 | 12665 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12666 | } |
12667 | ||
e2e4d78b JK |
12668 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12669 | ||
12670 | It gets cleared already on the removal of the first one of such placed | |
12671 | breakpoints. This is OK as they get all removed altogether. */ | |
12672 | ||
c1fc2657 | 12673 | longjmp_breakpoint::~longjmp_breakpoint () |
e2e4d78b | 12674 | { |
c1fc2657 | 12675 | thread_info *tp = find_thread_global_id (this->thread); |
e2e4d78b | 12676 | |
c1fc2657 | 12677 | if (tp != NULL) |
e2e4d78b | 12678 | tp->initiating_frame = null_frame_id; |
e2e4d78b JK |
12679 | } |
12680 | ||
55aa24fb SDJ |
12681 | /* Specific methods for probe breakpoints. */ |
12682 | ||
12683 | static int | |
12684 | bkpt_probe_insert_location (struct bp_location *bl) | |
12685 | { | |
12686 | int v = bkpt_insert_location (bl); | |
12687 | ||
12688 | if (v == 0) | |
12689 | { | |
12690 | /* The insertion was successful, now let's set the probe's semaphore | |
12691 | if needed. */ | |
935676c9 | 12692 | bl->probe.prob->set_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb SDJ |
12693 | } |
12694 | ||
12695 | return v; | |
12696 | } | |
12697 | ||
12698 | static int | |
73971819 PA |
12699 | bkpt_probe_remove_location (struct bp_location *bl, |
12700 | enum remove_bp_reason reason) | |
55aa24fb SDJ |
12701 | { |
12702 | /* Let's clear the semaphore before removing the location. */ | |
935676c9 | 12703 | bl->probe.prob->clear_semaphore (bl->probe.objfile, bl->gdbarch); |
55aa24fb | 12704 | |
73971819 | 12705 | return bkpt_remove_location (bl, reason); |
55aa24fb SDJ |
12706 | } |
12707 | ||
12708 | static void | |
f00aae0f | 12709 | bkpt_probe_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12710 | struct linespec_result *canonical, |
f00aae0f | 12711 | enum bptype type_wanted) |
55aa24fb SDJ |
12712 | { |
12713 | struct linespec_sals lsal; | |
12714 | ||
c2f4122d | 12715 | lsal.sals = parse_probes (location, NULL, canonical); |
8e9e35b1 TT |
12716 | lsal.canonical |
12717 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12718 | canonical->lsals.push_back (std::move (lsal)); |
55aa24fb SDJ |
12719 | } |
12720 | ||
6c5b2ebe | 12721 | static std::vector<symtab_and_line> |
f00aae0f KS |
12722 | bkpt_probe_decode_location (struct breakpoint *b, |
12723 | const struct event_location *location, | |
6c5b2ebe | 12724 | struct program_space *search_pspace) |
55aa24fb | 12725 | { |
6c5b2ebe PA |
12726 | std::vector<symtab_and_line> sals = parse_probes (location, search_pspace, NULL); |
12727 | if (sals.empty ()) | |
55aa24fb | 12728 | error (_("probe not found")); |
6c5b2ebe | 12729 | return sals; |
55aa24fb SDJ |
12730 | } |
12731 | ||
348d480f | 12732 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12733 | |
348d480f PA |
12734 | static void |
12735 | tracepoint_re_set (struct breakpoint *b) | |
12736 | { | |
12737 | breakpoint_re_set_default (b); | |
12738 | } | |
876fa593 | 12739 | |
348d480f PA |
12740 | static int |
12741 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
bd522513 | 12742 | const address_space *aspace, CORE_ADDR bp_addr, |
09ac7c10 | 12743 | const struct target_waitstatus *ws) |
348d480f PA |
12744 | { |
12745 | /* By definition, the inferior does not report stops at | |
12746 | tracepoints. */ | |
12747 | return 0; | |
74960c60 VP |
12748 | } |
12749 | ||
12750 | static void | |
348d480f PA |
12751 | tracepoint_print_one_detail (const struct breakpoint *self, |
12752 | struct ui_out *uiout) | |
74960c60 | 12753 | { |
d9b3f62e | 12754 | struct tracepoint *tp = (struct tracepoint *) self; |
5d9310c4 | 12755 | if (!tp->static_trace_marker_id.empty ()) |
348d480f PA |
12756 | { |
12757 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12758 | |
6a831f06 PA |
12759 | uiout->message ("\tmarker id is %pF\n", |
12760 | string_field ("static-tracepoint-marker-string-id", | |
12761 | tp->static_trace_marker_id.c_str ())); | |
348d480f | 12762 | } |
0d381245 VP |
12763 | } |
12764 | ||
a474d7c2 | 12765 | static void |
348d480f | 12766 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12767 | { |
112e8700 | 12768 | if (current_uiout->is_mi_like_p ()) |
348d480f | 12769 | return; |
cc59ec59 | 12770 | |
348d480f PA |
12771 | switch (b->type) |
12772 | { | |
12773 | case bp_tracepoint: | |
12774 | printf_filtered (_("Tracepoint")); | |
12775 | printf_filtered (_(" %d"), b->number); | |
12776 | break; | |
12777 | case bp_fast_tracepoint: | |
12778 | printf_filtered (_("Fast tracepoint")); | |
12779 | printf_filtered (_(" %d"), b->number); | |
12780 | break; | |
12781 | case bp_static_tracepoint: | |
12782 | printf_filtered (_("Static tracepoint")); | |
12783 | printf_filtered (_(" %d"), b->number); | |
12784 | break; | |
12785 | default: | |
12786 | internal_error (__FILE__, __LINE__, | |
12787 | _("unhandled tracepoint type %d"), (int) b->type); | |
12788 | } | |
12789 | ||
12790 | say_where (b); | |
a474d7c2 PA |
12791 | } |
12792 | ||
348d480f | 12793 | static void |
d9b3f62e | 12794 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12795 | { |
d9b3f62e PA |
12796 | struct tracepoint *tp = (struct tracepoint *) self; |
12797 | ||
12798 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12799 | fprintf_unfiltered (fp, "ftrace"); |
c93e8391 | 12800 | else if (self->type == bp_static_tracepoint) |
348d480f | 12801 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12802 | else if (self->type == bp_tracepoint) |
348d480f PA |
12803 | fprintf_unfiltered (fp, "trace"); |
12804 | else | |
12805 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12806 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12807 | |
f00aae0f | 12808 | fprintf_unfiltered (fp, " %s", |
d28cd78a | 12809 | event_location_to_string (self->location.get ())); |
d9b3f62e PA |
12810 | print_recreate_thread (self, fp); |
12811 | ||
12812 | if (tp->pass_count) | |
12813 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12814 | } |
12815 | ||
983af33b | 12816 | static void |
f00aae0f KS |
12817 | tracepoint_create_sals_from_location (const struct event_location *location, |
12818 | struct linespec_result *canonical, | |
12819 | enum bptype type_wanted) | |
983af33b | 12820 | { |
f00aae0f | 12821 | create_sals_from_location_default (location, canonical, type_wanted); |
983af33b SDJ |
12822 | } |
12823 | ||
12824 | static void | |
12825 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12826 | struct linespec_result *canonical, | |
e1e01040 PA |
12827 | gdb::unique_xmalloc_ptr<char> cond_string, |
12828 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12829 | enum bptype type_wanted, |
12830 | enum bpdisp disposition, | |
12831 | int thread, | |
12832 | int task, int ignore_count, | |
12833 | const struct breakpoint_ops *ops, | |
12834 | int from_tty, int enabled, | |
44f238bb | 12835 | int internal, unsigned flags) |
983af33b | 12836 | { |
023fa29b | 12837 | create_breakpoints_sal_default (gdbarch, canonical, |
e1e01040 PA |
12838 | std::move (cond_string), |
12839 | std::move (extra_string), | |
e7e0cddf | 12840 | type_wanted, |
983af33b SDJ |
12841 | disposition, thread, task, |
12842 | ignore_count, ops, from_tty, | |
44f238bb | 12843 | enabled, internal, flags); |
983af33b SDJ |
12844 | } |
12845 | ||
6c5b2ebe | 12846 | static std::vector<symtab_and_line> |
f00aae0f KS |
12847 | tracepoint_decode_location (struct breakpoint *b, |
12848 | const struct event_location *location, | |
6c5b2ebe | 12849 | struct program_space *search_pspace) |
983af33b | 12850 | { |
6c5b2ebe | 12851 | return decode_location_default (b, location, search_pspace); |
983af33b SDJ |
12852 | } |
12853 | ||
2060206e | 12854 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12855 | |
bac7c5cf | 12856 | /* Virtual table for tracepoints on static probes. */ |
55aa24fb SDJ |
12857 | |
12858 | static void | |
f00aae0f KS |
12859 | tracepoint_probe_create_sals_from_location |
12860 | (const struct event_location *location, | |
12861 | struct linespec_result *canonical, | |
12862 | enum bptype type_wanted) | |
55aa24fb SDJ |
12863 | { |
12864 | /* We use the same method for breakpoint on probes. */ | |
f00aae0f | 12865 | bkpt_probe_create_sals_from_location (location, canonical, type_wanted); |
55aa24fb SDJ |
12866 | } |
12867 | ||
6c5b2ebe | 12868 | static std::vector<symtab_and_line> |
f00aae0f KS |
12869 | tracepoint_probe_decode_location (struct breakpoint *b, |
12870 | const struct event_location *location, | |
6c5b2ebe | 12871 | struct program_space *search_pspace) |
55aa24fb SDJ |
12872 | { |
12873 | /* We use the same method for breakpoint on probes. */ | |
6c5b2ebe | 12874 | return bkpt_probe_decode_location (b, location, search_pspace); |
55aa24fb SDJ |
12875 | } |
12876 | ||
5c2b4418 HZ |
12877 | /* Dprintf breakpoint_ops methods. */ |
12878 | ||
12879 | static void | |
12880 | dprintf_re_set (struct breakpoint *b) | |
12881 | { | |
12882 | breakpoint_re_set_default (b); | |
12883 | ||
f00aae0f KS |
12884 | /* extra_string should never be non-NULL for dprintf. */ |
12885 | gdb_assert (b->extra_string != NULL); | |
5c2b4418 HZ |
12886 | |
12887 | /* 1 - connect to target 1, that can run breakpoint commands. | |
12888 | 2 - create a dprintf, which resolves fine. | |
12889 | 3 - disconnect from target 1 | |
12890 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
12891 | ||
12892 | After steps #3/#4, you'll want the dprintf command list to | |
12893 | be updated, because target 1 and 2 may well return different | |
12894 | answers for target_can_run_breakpoint_commands(). | |
12895 | Given absence of finer grained resetting, we get to do | |
12896 | it all the time. */ | |
12897 | if (b->extra_string != NULL) | |
12898 | update_dprintf_command_list (b); | |
12899 | } | |
12900 | ||
2d9442cc HZ |
12901 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
12902 | ||
12903 | static void | |
12904 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
12905 | { | |
f00aae0f | 12906 | fprintf_unfiltered (fp, "dprintf %s,%s", |
d28cd78a | 12907 | event_location_to_string (tp->location.get ()), |
2d9442cc HZ |
12908 | tp->extra_string); |
12909 | print_recreate_thread (tp, fp); | |
12910 | } | |
12911 | ||
9d6e6e84 HZ |
12912 | /* Implement the "after_condition_true" breakpoint_ops method for |
12913 | dprintf. | |
12914 | ||
12915 | dprintf's are implemented with regular commands in their command | |
12916 | list, but we run the commands here instead of before presenting the | |
12917 | stop to the user, as dprintf's don't actually cause a stop. This | |
12918 | also makes it so that the commands of multiple dprintfs at the same | |
12919 | address are all handled. */ | |
12920 | ||
12921 | static void | |
12922 | dprintf_after_condition_true (struct bpstats *bs) | |
12923 | { | |
04afa70c | 12924 | struct bpstats tmp_bs; |
9d6e6e84 HZ |
12925 | struct bpstats *tmp_bs_p = &tmp_bs; |
12926 | ||
12927 | /* dprintf's never cause a stop. This wasn't set in the | |
12928 | check_status hook instead because that would make the dprintf's | |
12929 | condition not be evaluated. */ | |
12930 | bs->stop = 0; | |
12931 | ||
12932 | /* Run the command list here. Take ownership of it instead of | |
12933 | copying. We never want these commands to run later in | |
12934 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
12935 | be set at same address as this dprintf, or even if running the | |
12936 | commands here throws. */ | |
12937 | tmp_bs.commands = bs->commands; | |
12938 | bs->commands = NULL; | |
9d6e6e84 HZ |
12939 | |
12940 | bpstat_do_actions_1 (&tmp_bs_p); | |
12941 | ||
12942 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
12943 | bpstat_do_actions_1 may return early without processing the whole | |
12944 | list. */ | |
9d6e6e84 HZ |
12945 | } |
12946 | ||
983af33b SDJ |
12947 | /* The breakpoint_ops structure to be used on static tracepoints with |
12948 | markers (`-m'). */ | |
12949 | ||
12950 | static void | |
f00aae0f | 12951 | strace_marker_create_sals_from_location (const struct event_location *location, |
5f700d83 | 12952 | struct linespec_result *canonical, |
f00aae0f | 12953 | enum bptype type_wanted) |
983af33b SDJ |
12954 | { |
12955 | struct linespec_sals lsal; | |
f00aae0f | 12956 | const char *arg_start, *arg; |
983af33b | 12957 | |
a20714ff | 12958 | arg = arg_start = get_linespec_location (location)->spec_string; |
f00aae0f | 12959 | lsal.sals = decode_static_tracepoint_spec (&arg); |
983af33b | 12960 | |
f2fc3015 TT |
12961 | std::string str (arg_start, arg - arg_start); |
12962 | const char *ptr = str.c_str (); | |
a20714ff PA |
12963 | canonical->location |
12964 | = new_linespec_location (&ptr, symbol_name_match_type::FULL); | |
983af33b | 12965 | |
8e9e35b1 TT |
12966 | lsal.canonical |
12967 | = xstrdup (event_location_to_string (canonical->location.get ())); | |
6c5b2ebe | 12968 | canonical->lsals.push_back (std::move (lsal)); |
983af33b SDJ |
12969 | } |
12970 | ||
12971 | static void | |
12972 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12973 | struct linespec_result *canonical, | |
e1e01040 PA |
12974 | gdb::unique_xmalloc_ptr<char> cond_string, |
12975 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
12976 | enum bptype type_wanted, |
12977 | enum bpdisp disposition, | |
12978 | int thread, | |
12979 | int task, int ignore_count, | |
12980 | const struct breakpoint_ops *ops, | |
12981 | int from_tty, int enabled, | |
44f238bb | 12982 | int internal, unsigned flags) |
983af33b | 12983 | { |
6c5b2ebe | 12984 | const linespec_sals &lsal = canonical->lsals[0]; |
983af33b SDJ |
12985 | |
12986 | /* If the user is creating a static tracepoint by marker id | |
12987 | (strace -m MARKER_ID), then store the sals index, so that | |
12988 | breakpoint_re_set can try to match up which of the newly | |
12989 | found markers corresponds to this one, and, don't try to | |
12990 | expand multiple locations for each sal, given than SALS | |
12991 | already should contain all sals for MARKER_ID. */ | |
12992 | ||
6c5b2ebe | 12993 | for (size_t i = 0; i < lsal.sals.size (); i++) |
983af33b | 12994 | { |
6c5b2ebe PA |
12995 | event_location_up location |
12996 | = copy_event_location (canonical->location.get ()); | |
983af33b | 12997 | |
b270e6f9 | 12998 | std::unique_ptr<tracepoint> tp (new tracepoint ()); |
6c5b2ebe | 12999 | init_breakpoint_sal (tp.get (), gdbarch, lsal.sals[i], |
ffc2605c | 13000 | std::move (location), NULL, |
e1e01040 PA |
13001 | std::move (cond_string), |
13002 | std::move (extra_string), | |
e7e0cddf | 13003 | type_wanted, disposition, |
983af33b | 13004 | thread, task, ignore_count, ops, |
44f238bb | 13005 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13006 | canonical->special_display); |
13007 | /* Given that its possible to have multiple markers with | |
13008 | the same string id, if the user is creating a static | |
13009 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13010 | store the sals index, so that breakpoint_re_set can | |
13011 | try to match up which of the newly found markers | |
13012 | corresponds to this one */ | |
13013 | tp->static_trace_marker_id_idx = i; | |
13014 | ||
b270e6f9 | 13015 | install_breakpoint (internal, std::move (tp), 0); |
983af33b SDJ |
13016 | } |
13017 | } | |
13018 | ||
6c5b2ebe | 13019 | static std::vector<symtab_and_line> |
f00aae0f KS |
13020 | strace_marker_decode_location (struct breakpoint *b, |
13021 | const struct event_location *location, | |
6c5b2ebe | 13022 | struct program_space *search_pspace) |
983af33b SDJ |
13023 | { |
13024 | struct tracepoint *tp = (struct tracepoint *) b; | |
a20714ff | 13025 | const char *s = get_linespec_location (location)->spec_string; |
983af33b | 13026 | |
6c5b2ebe PA |
13027 | std::vector<symtab_and_line> sals = decode_static_tracepoint_spec (&s); |
13028 | if (sals.size () > tp->static_trace_marker_id_idx) | |
983af33b | 13029 | { |
6c5b2ebe PA |
13030 | sals[0] = sals[tp->static_trace_marker_id_idx]; |
13031 | sals.resize (1); | |
13032 | return sals; | |
983af33b SDJ |
13033 | } |
13034 | else | |
5d9310c4 | 13035 | error (_("marker %s not found"), tp->static_trace_marker_id.c_str ()); |
983af33b SDJ |
13036 | } |
13037 | ||
13038 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13039 | ||
13040 | static int | |
13041 | strace_marker_p (struct breakpoint *b) | |
13042 | { | |
13043 | return b->ops == &strace_marker_breakpoint_ops; | |
13044 | } | |
13045 | ||
53a5351d | 13046 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13047 | structures. */ |
c906108c SS |
13048 | |
13049 | void | |
fba45db2 | 13050 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13051 | { |
52f0bd74 | 13052 | struct breakpoint *b; |
c906108c | 13053 | |
8a3fe4f8 | 13054 | gdb_assert (bpt != NULL); |
c906108c | 13055 | |
4a64f543 MS |
13056 | /* Has this bp already been deleted? This can happen because |
13057 | multiple lists can hold pointers to bp's. bpstat lists are | |
13058 | especial culprits. | |
13059 | ||
13060 | One example of this happening is a watchpoint's scope bp. When | |
13061 | the scope bp triggers, we notice that the watchpoint is out of | |
13062 | scope, and delete it. We also delete its scope bp. But the | |
13063 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13064 | That bpstat is then checked for auto-deleting bp's, which are | |
13065 | deleted. | |
13066 | ||
13067 | A real solution to this problem might involve reference counts in | |
13068 | bp's, and/or giving them pointers back to their referencing | |
13069 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13070 | storage when no more references were extent. A cheaper bandaid | |
13071 | was chosen. */ | |
c906108c SS |
13072 | if (bpt->type == bp_none) |
13073 | return; | |
13074 | ||
4a64f543 MS |
13075 | /* At least avoid this stale reference until the reference counting |
13076 | of breakpoints gets resolved. */ | |
d0fb5eae | 13077 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13078 | { |
d0fb5eae | 13079 | struct breakpoint *related; |
3a5c3e22 | 13080 | struct watchpoint *w; |
d0fb5eae JK |
13081 | |
13082 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13083 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13084 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13085 | w = (struct watchpoint *) bpt; |
13086 | else | |
13087 | w = NULL; | |
13088 | if (w != NULL) | |
13089 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13090 | |
13091 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13092 | for (related = bpt; related->related_breakpoint != bpt; | |
13093 | related = related->related_breakpoint); | |
13094 | related->related_breakpoint = bpt->related_breakpoint; | |
13095 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13096 | } |
13097 | ||
a9634178 TJB |
13098 | /* watch_command_1 creates a watchpoint but only sets its number if |
13099 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13100 | a problem in that process, we'll be asked to delete the half-created | |
13101 | watchpoint. In that case, don't announce the deletion. */ | |
13102 | if (bpt->number) | |
76727919 | 13103 | gdb::observers::breakpoint_deleted.notify (bpt); |
c906108c | 13104 | |
c906108c SS |
13105 | if (breakpoint_chain == bpt) |
13106 | breakpoint_chain = bpt->next; | |
13107 | ||
c906108c SS |
13108 | ALL_BREAKPOINTS (b) |
13109 | if (b->next == bpt) | |
c5aa993b JM |
13110 | { |
13111 | b->next = bpt->next; | |
13112 | break; | |
13113 | } | |
c906108c | 13114 | |
f431efe5 PA |
13115 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13116 | been freed. */ | |
13117 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13118 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13119 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13120 | commands are associated with the bpstat; if we remove it here, | |
13121 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13122 | event-top.c won't do anything, and temporary breakpoints with | |
13123 | commands won't work. */ | |
13124 | ||
13125 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13126 | ||
4a64f543 MS |
13127 | /* Now that breakpoint is removed from breakpoint list, update the |
13128 | global location list. This will remove locations that used to | |
13129 | belong to this breakpoint. Do this before freeing the breakpoint | |
13130 | itself, since remove_breakpoint looks at location's owner. It | |
13131 | might be better design to have location completely | |
13132 | self-contained, but it's not the case now. */ | |
44702360 | 13133 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 13134 | |
4a64f543 MS |
13135 | /* On the chance that someone will soon try again to delete this |
13136 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13137 | bpt->type = bp_none; |
4d01a485 | 13138 | delete bpt; |
c906108c SS |
13139 | } |
13140 | ||
51be5b68 PA |
13141 | /* Iterator function to call a user-provided callback function once |
13142 | for each of B and its related breakpoints. */ | |
13143 | ||
13144 | static void | |
13145 | iterate_over_related_breakpoints (struct breakpoint *b, | |
48649e1b | 13146 | gdb::function_view<void (breakpoint *)> function) |
51be5b68 PA |
13147 | { |
13148 | struct breakpoint *related; | |
13149 | ||
13150 | related = b; | |
13151 | do | |
13152 | { | |
13153 | struct breakpoint *next; | |
13154 | ||
13155 | /* FUNCTION may delete RELATED. */ | |
13156 | next = related->related_breakpoint; | |
13157 | ||
13158 | if (next == related) | |
13159 | { | |
13160 | /* RELATED is the last ring entry. */ | |
48649e1b | 13161 | function (related); |
51be5b68 PA |
13162 | |
13163 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13164 | B. There's nothing left to do anyway, so just break | |
13165 | out. */ | |
13166 | break; | |
13167 | } | |
13168 | else | |
48649e1b | 13169 | function (related); |
51be5b68 PA |
13170 | |
13171 | related = next; | |
13172 | } | |
13173 | while (related != b); | |
13174 | } | |
95a42b64 | 13175 | |
4495129a | 13176 | static void |
981a3fb3 | 13177 | delete_command (const char *arg, int from_tty) |
c906108c | 13178 | { |
35df4500 | 13179 | struct breakpoint *b, *b_tmp; |
c906108c | 13180 | |
ea9365bb TT |
13181 | dont_repeat (); |
13182 | ||
c906108c SS |
13183 | if (arg == 0) |
13184 | { | |
13185 | int breaks_to_delete = 0; | |
13186 | ||
46c6471b PA |
13187 | /* Delete all breakpoints if no argument. Do not delete |
13188 | internal breakpoints, these have to be deleted with an | |
13189 | explicit breakpoint number argument. */ | |
c5aa993b | 13190 | ALL_BREAKPOINTS (b) |
46c6471b | 13191 | if (user_breakpoint_p (b)) |
973d738b DJ |
13192 | { |
13193 | breaks_to_delete = 1; | |
13194 | break; | |
13195 | } | |
c906108c SS |
13196 | |
13197 | /* Ask user only if there are some breakpoints to delete. */ | |
13198 | if (!from_tty | |
e2e0b3e5 | 13199 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13200 | { |
35df4500 | 13201 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13202 | if (user_breakpoint_p (b)) |
c5aa993b | 13203 | delete_breakpoint (b); |
c906108c SS |
13204 | } |
13205 | } | |
13206 | else | |
48649e1b | 13207 | map_breakpoint_numbers |
b926417a | 13208 | (arg, [&] (breakpoint *br) |
48649e1b | 13209 | { |
b926417a | 13210 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 13211 | }); |
c906108c SS |
13212 | } |
13213 | ||
c2f4122d PA |
13214 | /* Return true if all locations of B bound to PSPACE are pending. If |
13215 | PSPACE is NULL, all locations of all program spaces are | |
13216 | considered. */ | |
13217 | ||
0d381245 | 13218 | static int |
c2f4122d | 13219 | all_locations_are_pending (struct breakpoint *b, struct program_space *pspace) |
fe3f5fa8 | 13220 | { |
c2f4122d PA |
13221 | struct bp_location *loc; |
13222 | ||
13223 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
13224 | if ((pspace == NULL | |
13225 | || loc->pspace == pspace) | |
13226 | && !loc->shlib_disabled | |
8645ff69 | 13227 | && !loc->pspace->executing_startup) |
0d381245 VP |
13228 | return 0; |
13229 | return 1; | |
fe3f5fa8 VP |
13230 | } |
13231 | ||
776592bf DE |
13232 | /* Subroutine of update_breakpoint_locations to simplify it. |
13233 | Return non-zero if multiple fns in list LOC have the same name. | |
13234 | Null names are ignored. */ | |
13235 | ||
13236 | static int | |
13237 | ambiguous_names_p (struct bp_location *loc) | |
13238 | { | |
13239 | struct bp_location *l; | |
459a2e4c TT |
13240 | htab_t htab = htab_create_alloc (13, htab_hash_string, streq_hash, NULL, |
13241 | xcalloc, xfree); | |
776592bf DE |
13242 | |
13243 | for (l = loc; l != NULL; l = l->next) | |
13244 | { | |
13245 | const char **slot; | |
13246 | const char *name = l->function_name; | |
13247 | ||
13248 | /* Allow for some names to be NULL, ignore them. */ | |
13249 | if (name == NULL) | |
13250 | continue; | |
13251 | ||
13252 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13253 | INSERT); | |
4a64f543 MS |
13254 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13255 | returns NULL. */ | |
776592bf DE |
13256 | if (*slot != NULL) |
13257 | { | |
13258 | htab_delete (htab); | |
13259 | return 1; | |
13260 | } | |
13261 | *slot = name; | |
13262 | } | |
13263 | ||
13264 | htab_delete (htab); | |
13265 | return 0; | |
13266 | } | |
13267 | ||
0fb4aa4b PA |
13268 | /* When symbols change, it probably means the sources changed as well, |
13269 | and it might mean the static tracepoint markers are no longer at | |
13270 | the same address or line numbers they used to be at last we | |
13271 | checked. Losing your static tracepoints whenever you rebuild is | |
13272 | undesirable. This function tries to resync/rematch gdb static | |
13273 | tracepoints with the markers on the target, for static tracepoints | |
13274 | that have not been set by marker id. Static tracepoint that have | |
13275 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13276 | The heuristic is: | |
13277 | ||
13278 | 1) For a tracepoint set at a specific address, look for a marker at | |
13279 | the old PC. If one is found there, assume to be the same marker. | |
13280 | If the name / string id of the marker found is different from the | |
13281 | previous known name, assume that means the user renamed the marker | |
13282 | in the sources, and output a warning. | |
13283 | ||
13284 | 2) For a tracepoint set at a given line number, look for a marker | |
13285 | at the new address of the old line number. If one is found there, | |
13286 | assume to be the same marker. If the name / string id of the | |
13287 | marker found is different from the previous known name, assume that | |
13288 | means the user renamed the marker in the sources, and output a | |
13289 | warning. | |
13290 | ||
13291 | 3) If a marker is no longer found at the same address or line, it | |
13292 | may mean the marker no longer exists. But it may also just mean | |
13293 | the code changed a bit. Maybe the user added a few lines of code | |
13294 | that made the marker move up or down (in line number terms). Ask | |
13295 | the target for info about the marker with the string id as we knew | |
13296 | it. If found, update line number and address in the matching | |
13297 | static tracepoint. This will get confused if there's more than one | |
13298 | marker with the same ID (possible in UST, although unadvised | |
13299 | precisely because it confuses tools). */ | |
13300 | ||
13301 | static struct symtab_and_line | |
13302 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13303 | { | |
d9b3f62e | 13304 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13305 | struct static_tracepoint_marker marker; |
13306 | CORE_ADDR pc; | |
0fb4aa4b PA |
13307 | |
13308 | pc = sal.pc; | |
13309 | if (sal.line) | |
13310 | find_line_pc (sal.symtab, sal.line, &pc); | |
13311 | ||
13312 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13313 | { | |
5d9310c4 | 13314 | if (tp->static_trace_marker_id != marker.str_id) |
0fb4aa4b | 13315 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
5d9310c4 SM |
13316 | b->number, tp->static_trace_marker_id.c_str (), |
13317 | marker.str_id.c_str ()); | |
0fb4aa4b | 13318 | |
5d9310c4 | 13319 | tp->static_trace_marker_id = std::move (marker.str_id); |
0fb4aa4b PA |
13320 | |
13321 | return sal; | |
13322 | } | |
13323 | ||
13324 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13325 | by string ID. */ | |
13326 | if (!sal.explicit_pc | |
13327 | && sal.line != 0 | |
13328 | && sal.symtab != NULL | |
5d9310c4 | 13329 | && !tp->static_trace_marker_id.empty ()) |
0fb4aa4b | 13330 | { |
5d9310c4 SM |
13331 | std::vector<static_tracepoint_marker> markers |
13332 | = target_static_tracepoint_markers_by_strid | |
13333 | (tp->static_trace_marker_id.c_str ()); | |
0fb4aa4b | 13334 | |
5d9310c4 | 13335 | if (!markers.empty ()) |
0fb4aa4b | 13336 | { |
0fb4aa4b | 13337 | struct symbol *sym; |
80e1d417 | 13338 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13339 | struct ui_out *uiout = current_uiout; |
67994074 | 13340 | struct explicit_location explicit_loc; |
0fb4aa4b | 13341 | |
5d9310c4 | 13342 | tpmarker = &markers[0]; |
0fb4aa4b | 13343 | |
5d9310c4 | 13344 | tp->static_trace_marker_id = std::move (tpmarker->str_id); |
0fb4aa4b PA |
13345 | |
13346 | warning (_("marker for static tracepoint %d (%s) not " | |
13347 | "found at previous line number"), | |
5d9310c4 | 13348 | b->number, tp->static_trace_marker_id.c_str ()); |
0fb4aa4b | 13349 | |
51abb421 | 13350 | symtab_and_line sal2 = find_pc_line (tpmarker->address, 0); |
80e1d417 | 13351 | sym = find_pc_sect_function (tpmarker->address, NULL); |
112e8700 | 13352 | uiout->text ("Now in "); |
0fb4aa4b PA |
13353 | if (sym) |
13354 | { | |
987012b8 | 13355 | uiout->field_string ("func", sym->print_name (), |
e43b10e1 | 13356 | function_name_style.style ()); |
112e8700 | 13357 | uiout->text (" at "); |
0fb4aa4b | 13358 | } |
112e8700 | 13359 | uiout->field_string ("file", |
cbe56571 | 13360 | symtab_to_filename_for_display (sal2.symtab), |
e43b10e1 | 13361 | file_name_style.style ()); |
112e8700 | 13362 | uiout->text (":"); |
0fb4aa4b | 13363 | |
112e8700 | 13364 | if (uiout->is_mi_like_p ()) |
0fb4aa4b | 13365 | { |
0b0865da | 13366 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13367 | |
112e8700 | 13368 | uiout->field_string ("fullname", fullname); |
0fb4aa4b PA |
13369 | } |
13370 | ||
381befee | 13371 | uiout->field_signed ("line", sal2.line); |
112e8700 | 13372 | uiout->text ("\n"); |
0fb4aa4b | 13373 | |
80e1d417 | 13374 | b->loc->line_number = sal2.line; |
2f202fde | 13375 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b | 13376 | |
d28cd78a | 13377 | b->location.reset (NULL); |
67994074 KS |
13378 | initialize_explicit_location (&explicit_loc); |
13379 | explicit_loc.source_filename | |
00e52e53 | 13380 | = ASTRDUP (symtab_to_filename_for_display (sal2.symtab)); |
67994074 KS |
13381 | explicit_loc.line_offset.offset = b->loc->line_number; |
13382 | explicit_loc.line_offset.sign = LINE_OFFSET_NONE; | |
d28cd78a | 13383 | b->location = new_explicit_location (&explicit_loc); |
0fb4aa4b PA |
13384 | |
13385 | /* Might be nice to check if function changed, and warn if | |
13386 | so. */ | |
0fb4aa4b PA |
13387 | } |
13388 | } | |
13389 | return sal; | |
13390 | } | |
13391 | ||
8d3788bd VP |
13392 | /* Returns 1 iff locations A and B are sufficiently same that |
13393 | we don't need to report breakpoint as changed. */ | |
13394 | ||
13395 | static int | |
13396 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13397 | { | |
13398 | while (a && b) | |
13399 | { | |
13400 | if (a->address != b->address) | |
13401 | return 0; | |
13402 | ||
13403 | if (a->shlib_disabled != b->shlib_disabled) | |
13404 | return 0; | |
13405 | ||
13406 | if (a->enabled != b->enabled) | |
13407 | return 0; | |
13408 | ||
13409 | a = a->next; | |
13410 | b = b->next; | |
13411 | } | |
13412 | ||
13413 | if ((a == NULL) != (b == NULL)) | |
13414 | return 0; | |
13415 | ||
13416 | return 1; | |
13417 | } | |
13418 | ||
c2f4122d PA |
13419 | /* Split all locations of B that are bound to PSPACE out of B's |
13420 | location list to a separate list and return that list's head. If | |
13421 | PSPACE is NULL, hoist out all locations of B. */ | |
13422 | ||
13423 | static struct bp_location * | |
13424 | hoist_existing_locations (struct breakpoint *b, struct program_space *pspace) | |
13425 | { | |
13426 | struct bp_location head; | |
13427 | struct bp_location *i = b->loc; | |
13428 | struct bp_location **i_link = &b->loc; | |
13429 | struct bp_location *hoisted = &head; | |
13430 | ||
13431 | if (pspace == NULL) | |
13432 | { | |
13433 | i = b->loc; | |
13434 | b->loc = NULL; | |
13435 | return i; | |
13436 | } | |
13437 | ||
13438 | head.next = NULL; | |
13439 | ||
13440 | while (i != NULL) | |
13441 | { | |
13442 | if (i->pspace == pspace) | |
13443 | { | |
13444 | *i_link = i->next; | |
13445 | i->next = NULL; | |
13446 | hoisted->next = i; | |
13447 | hoisted = i; | |
13448 | } | |
13449 | else | |
13450 | i_link = &i->next; | |
13451 | i = *i_link; | |
13452 | } | |
13453 | ||
13454 | return head.next; | |
13455 | } | |
13456 | ||
13457 | /* Create new breakpoint locations for B (a hardware or software | |
13458 | breakpoint) based on SALS and SALS_END. If SALS_END.NELTS is not | |
13459 | zero, then B is a ranged breakpoint. Only recreates locations for | |
13460 | FILTER_PSPACE. Locations of other program spaces are left | |
13461 | untouched. */ | |
f1310107 | 13462 | |
0e30163f | 13463 | void |
0d381245 | 13464 | update_breakpoint_locations (struct breakpoint *b, |
c2f4122d | 13465 | struct program_space *filter_pspace, |
6c5b2ebe PA |
13466 | gdb::array_view<const symtab_and_line> sals, |
13467 | gdb::array_view<const symtab_and_line> sals_end) | |
fe3f5fa8 | 13468 | { |
c2f4122d | 13469 | struct bp_location *existing_locations; |
0d381245 | 13470 | |
6c5b2ebe | 13471 | if (!sals_end.empty () && (sals.size () != 1 || sals_end.size () != 1)) |
f8eba3c6 TT |
13472 | { |
13473 | /* Ranged breakpoints have only one start location and one end | |
13474 | location. */ | |
13475 | b->enable_state = bp_disabled; | |
f8eba3c6 TT |
13476 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
13477 | "multiple locations found\n"), | |
13478 | b->number); | |
13479 | return; | |
13480 | } | |
f1310107 | 13481 | |
4a64f543 MS |
13482 | /* If there's no new locations, and all existing locations are |
13483 | pending, don't do anything. This optimizes the common case where | |
13484 | all locations are in the same shared library, that was unloaded. | |
13485 | We'd like to retain the location, so that when the library is | |
13486 | loaded again, we don't loose the enabled/disabled status of the | |
13487 | individual locations. */ | |
6c5b2ebe | 13488 | if (all_locations_are_pending (b, filter_pspace) && sals.empty ()) |
fe3f5fa8 VP |
13489 | return; |
13490 | ||
c2f4122d | 13491 | existing_locations = hoist_existing_locations (b, filter_pspace); |
fe3f5fa8 | 13492 | |
6c5b2ebe | 13493 | for (const auto &sal : sals) |
fe3f5fa8 | 13494 | { |
f8eba3c6 TT |
13495 | struct bp_location *new_loc; |
13496 | ||
6c5b2ebe | 13497 | switch_to_program_space_and_thread (sal.pspace); |
f8eba3c6 | 13498 | |
6c5b2ebe | 13499 | new_loc = add_location_to_breakpoint (b, &sal); |
fe3f5fa8 | 13500 | |
0d381245 VP |
13501 | /* Reparse conditions, they might contain references to the |
13502 | old symtab. */ | |
13503 | if (b->cond_string != NULL) | |
13504 | { | |
bbc13ae3 | 13505 | const char *s; |
fe3f5fa8 | 13506 | |
0d381245 | 13507 | s = b->cond_string; |
a70b8144 | 13508 | try |
0d381245 | 13509 | { |
6c5b2ebe PA |
13510 | new_loc->cond = parse_exp_1 (&s, sal.pc, |
13511 | block_for_pc (sal.pc), | |
0d381245 VP |
13512 | 0); |
13513 | } | |
230d2906 | 13514 | catch (const gdb_exception_error &e) |
0d381245 | 13515 | { |
3e43a32a MS |
13516 | warning (_("failed to reevaluate condition " |
13517 | "for breakpoint %d: %s"), | |
3d6e9d23 | 13518 | b->number, e.what ()); |
0d381245 VP |
13519 | new_loc->enabled = 0; |
13520 | } | |
13521 | } | |
fe3f5fa8 | 13522 | |
6c5b2ebe | 13523 | if (!sals_end.empty ()) |
f1310107 | 13524 | { |
6c5b2ebe | 13525 | CORE_ADDR end = find_breakpoint_range_end (sals_end[0]); |
f1310107 | 13526 | |
6c5b2ebe | 13527 | new_loc->length = end - sals[0].pc + 1; |
f1310107 | 13528 | } |
0d381245 | 13529 | } |
fe3f5fa8 | 13530 | |
4a64f543 MS |
13531 | /* If possible, carry over 'disable' status from existing |
13532 | breakpoints. */ | |
0d381245 VP |
13533 | { |
13534 | struct bp_location *e = existing_locations; | |
776592bf DE |
13535 | /* If there are multiple breakpoints with the same function name, |
13536 | e.g. for inline functions, comparing function names won't work. | |
13537 | Instead compare pc addresses; this is just a heuristic as things | |
13538 | may have moved, but in practice it gives the correct answer | |
13539 | often enough until a better solution is found. */ | |
13540 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13541 | ||
0d381245 VP |
13542 | for (; e; e = e->next) |
13543 | { | |
13544 | if (!e->enabled && e->function_name) | |
13545 | { | |
13546 | struct bp_location *l = b->loc; | |
776592bf DE |
13547 | if (have_ambiguous_names) |
13548 | { | |
13549 | for (; l; l = l->next) | |
f1310107 | 13550 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13551 | { |
13552 | l->enabled = 0; | |
13553 | break; | |
13554 | } | |
13555 | } | |
13556 | else | |
13557 | { | |
13558 | for (; l; l = l->next) | |
13559 | if (l->function_name | |
13560 | && strcmp (e->function_name, l->function_name) == 0) | |
13561 | { | |
13562 | l->enabled = 0; | |
13563 | break; | |
13564 | } | |
13565 | } | |
0d381245 VP |
13566 | } |
13567 | } | |
13568 | } | |
fe3f5fa8 | 13569 | |
8d3788bd | 13570 | if (!locations_are_equal (existing_locations, b->loc)) |
76727919 | 13571 | gdb::observers::breakpoint_modified.notify (b); |
fe3f5fa8 VP |
13572 | } |
13573 | ||
f00aae0f | 13574 | /* Find the SaL locations corresponding to the given LOCATION. |
ef23e705 TJB |
13575 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ |
13576 | ||
6c5b2ebe | 13577 | static std::vector<symtab_and_line> |
f00aae0f | 13578 | location_to_sals (struct breakpoint *b, struct event_location *location, |
c2f4122d | 13579 | struct program_space *search_pspace, int *found) |
ef23e705 | 13580 | { |
cc06b668 | 13581 | struct gdb_exception exception; |
ef23e705 | 13582 | |
983af33b | 13583 | gdb_assert (b->ops != NULL); |
ef23e705 | 13584 | |
6c5b2ebe PA |
13585 | std::vector<symtab_and_line> sals; |
13586 | ||
a70b8144 | 13587 | try |
ef23e705 | 13588 | { |
6c5b2ebe | 13589 | sals = b->ops->decode_location (b, location, search_pspace); |
ef23e705 | 13590 | } |
94aeb44b | 13591 | catch (gdb_exception_error &e) |
ef23e705 TJB |
13592 | { |
13593 | int not_found_and_ok = 0; | |
492d29ea | 13594 | |
ef23e705 TJB |
13595 | /* For pending breakpoints, it's expected that parsing will |
13596 | fail until the right shared library is loaded. User has | |
13597 | already told to create pending breakpoints and don't need | |
13598 | extra messages. If breakpoint is in bp_shlib_disabled | |
13599 | state, then user already saw the message about that | |
13600 | breakpoint being disabled, and don't want to see more | |
13601 | errors. */ | |
58438ac1 | 13602 | if (e.error == NOT_FOUND_ERROR |
c2f4122d PA |
13603 | && (b->condition_not_parsed |
13604 | || (b->loc != NULL | |
13605 | && search_pspace != NULL | |
13606 | && b->loc->pspace != search_pspace) | |
ef23e705 | 13607 | || (b->loc && b->loc->shlib_disabled) |
f8eba3c6 | 13608 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13609 | || b->enable_state == bp_disabled)) |
13610 | not_found_and_ok = 1; | |
13611 | ||
13612 | if (!not_found_and_ok) | |
13613 | { | |
13614 | /* We surely don't want to warn about the same breakpoint | |
13615 | 10 times. One solution, implemented here, is disable | |
13616 | the breakpoint on error. Another solution would be to | |
13617 | have separate 'warning emitted' flag. Since this | |
13618 | happens only when a binary has changed, I don't know | |
13619 | which approach is better. */ | |
13620 | b->enable_state = bp_disabled; | |
eedc3f4f | 13621 | throw; |
ef23e705 | 13622 | } |
94aeb44b TT |
13623 | |
13624 | exception = std::move (e); | |
ef23e705 TJB |
13625 | } |
13626 | ||
492d29ea | 13627 | if (exception.reason == 0 || exception.error != NOT_FOUND_ERROR) |
ef23e705 | 13628 | { |
6c5b2ebe PA |
13629 | for (auto &sal : sals) |
13630 | resolve_sal_pc (&sal); | |
f00aae0f | 13631 | if (b->condition_not_parsed && b->extra_string != NULL) |
ef23e705 | 13632 | { |
ed1d1739 KS |
13633 | char *cond_string, *extra_string; |
13634 | int thread, task; | |
ef23e705 | 13635 | |
6c5b2ebe | 13636 | find_condition_and_thread (b->extra_string, sals[0].pc, |
e7e0cddf SS |
13637 | &cond_string, &thread, &task, |
13638 | &extra_string); | |
f00aae0f | 13639 | gdb_assert (b->cond_string == NULL); |
ef23e705 TJB |
13640 | if (cond_string) |
13641 | b->cond_string = cond_string; | |
13642 | b->thread = thread; | |
13643 | b->task = task; | |
e7e0cddf | 13644 | if (extra_string) |
f00aae0f KS |
13645 | { |
13646 | xfree (b->extra_string); | |
13647 | b->extra_string = extra_string; | |
13648 | } | |
ef23e705 TJB |
13649 | b->condition_not_parsed = 0; |
13650 | } | |
13651 | ||
983af33b | 13652 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
6c5b2ebe | 13653 | sals[0] = update_static_tracepoint (b, sals[0]); |
ef23e705 | 13654 | |
58438ac1 TT |
13655 | *found = 1; |
13656 | } | |
13657 | else | |
13658 | *found = 0; | |
ef23e705 TJB |
13659 | |
13660 | return sals; | |
13661 | } | |
13662 | ||
348d480f PA |
13663 | /* The default re_set method, for typical hardware or software |
13664 | breakpoints. Reevaluate the breakpoint and recreate its | |
13665 | locations. */ | |
13666 | ||
13667 | static void | |
28010a5d | 13668 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 | 13669 | { |
c2f4122d | 13670 | struct program_space *filter_pspace = current_program_space; |
6c5b2ebe | 13671 | std::vector<symtab_and_line> expanded, expanded_end; |
ef23e705 | 13672 | |
6c5b2ebe PA |
13673 | int found; |
13674 | std::vector<symtab_and_line> sals = location_to_sals (b, b->location.get (), | |
13675 | filter_pspace, &found); | |
ef23e705 | 13676 | if (found) |
6c5b2ebe | 13677 | expanded = std::move (sals); |
ef23e705 | 13678 | |
f00aae0f | 13679 | if (b->location_range_end != NULL) |
f1310107 | 13680 | { |
6c5b2ebe PA |
13681 | std::vector<symtab_and_line> sals_end |
13682 | = location_to_sals (b, b->location_range_end.get (), | |
13683 | filter_pspace, &found); | |
f1310107 | 13684 | if (found) |
6c5b2ebe | 13685 | expanded_end = std::move (sals_end); |
f1310107 TJB |
13686 | } |
13687 | ||
c2f4122d | 13688 | update_breakpoint_locations (b, filter_pspace, expanded, expanded_end); |
28010a5d PA |
13689 | } |
13690 | ||
983af33b SDJ |
13691 | /* Default method for creating SALs from an address string. It basically |
13692 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13693 | ||
13694 | static void | |
f00aae0f KS |
13695 | create_sals_from_location_default (const struct event_location *location, |
13696 | struct linespec_result *canonical, | |
13697 | enum bptype type_wanted) | |
983af33b | 13698 | { |
f00aae0f | 13699 | parse_breakpoint_sals (location, canonical); |
983af33b SDJ |
13700 | } |
13701 | ||
13702 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13703 | function for the `create_breakpoints_sal' method of | |
13704 | breakpoint_ops. */ | |
13705 | ||
13706 | static void | |
13707 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13708 | struct linespec_result *canonical, | |
e1e01040 PA |
13709 | gdb::unique_xmalloc_ptr<char> cond_string, |
13710 | gdb::unique_xmalloc_ptr<char> extra_string, | |
983af33b SDJ |
13711 | enum bptype type_wanted, |
13712 | enum bpdisp disposition, | |
13713 | int thread, | |
13714 | int task, int ignore_count, | |
13715 | const struct breakpoint_ops *ops, | |
13716 | int from_tty, int enabled, | |
44f238bb | 13717 | int internal, unsigned flags) |
983af33b | 13718 | { |
e1e01040 PA |
13719 | create_breakpoints_sal (gdbarch, canonical, |
13720 | std::move (cond_string), | |
13721 | std::move (extra_string), | |
983af33b SDJ |
13722 | type_wanted, disposition, |
13723 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13724 | enabled, internal, flags); |
983af33b SDJ |
13725 | } |
13726 | ||
13727 | /* Decode the line represented by S by calling decode_line_full. This is the | |
5f700d83 | 13728 | default function for the `decode_location' method of breakpoint_ops. */ |
983af33b | 13729 | |
6c5b2ebe | 13730 | static std::vector<symtab_and_line> |
f00aae0f KS |
13731 | decode_location_default (struct breakpoint *b, |
13732 | const struct event_location *location, | |
6c5b2ebe | 13733 | struct program_space *search_pspace) |
983af33b SDJ |
13734 | { |
13735 | struct linespec_result canonical; | |
13736 | ||
c2f4122d | 13737 | decode_line_full (location, DECODE_LINE_FUNFIRSTLINE, search_pspace, |
cafb3438 | 13738 | NULL, 0, &canonical, multiple_symbols_all, |
c0e8dcd8 | 13739 | b->filter.get ()); |
983af33b SDJ |
13740 | |
13741 | /* We should get 0 or 1 resulting SALs. */ | |
6c5b2ebe | 13742 | gdb_assert (canonical.lsals.size () < 2); |
983af33b | 13743 | |
6c5b2ebe | 13744 | if (!canonical.lsals.empty ()) |
983af33b | 13745 | { |
6c5b2ebe PA |
13746 | const linespec_sals &lsal = canonical.lsals[0]; |
13747 | return std::move (lsal.sals); | |
983af33b | 13748 | } |
6c5b2ebe | 13749 | return {}; |
983af33b SDJ |
13750 | } |
13751 | ||
bf469271 | 13752 | /* Reset a breakpoint. */ |
c906108c | 13753 | |
bf469271 PA |
13754 | static void |
13755 | breakpoint_re_set_one (breakpoint *b) | |
c906108c | 13756 | { |
fdf44873 TT |
13757 | input_radix = b->input_radix; |
13758 | set_language (b->language); | |
c906108c | 13759 | |
348d480f | 13760 | b->ops->re_set (b); |
c906108c SS |
13761 | } |
13762 | ||
c2f4122d PA |
13763 | /* Re-set breakpoint locations for the current program space. |
13764 | Locations bound to other program spaces are left untouched. */ | |
13765 | ||
c906108c | 13766 | void |
69de3c6a | 13767 | breakpoint_re_set (void) |
c906108c | 13768 | { |
35df4500 | 13769 | struct breakpoint *b, *b_tmp; |
2a7f3dff | 13770 | |
c5aa993b | 13771 | { |
fdf44873 TT |
13772 | scoped_restore_current_language save_language; |
13773 | scoped_restore save_input_radix = make_scoped_restore (&input_radix); | |
5ed8105e | 13774 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
e62c965a | 13775 | |
8e817061 JB |
13776 | /* breakpoint_re_set_one sets the current_language to the language |
13777 | of the breakpoint it is resetting (see prepare_re_set_context) | |
13778 | before re-evaluating the breakpoint's location. This change can | |
13779 | unfortunately get undone by accident if the language_mode is set | |
13780 | to auto, and we either switch frames, or more likely in this context, | |
13781 | we select the current frame. | |
13782 | ||
13783 | We prevent this by temporarily turning the language_mode to | |
13784 | language_mode_manual. We restore it once all breakpoints | |
13785 | have been reset. */ | |
13786 | scoped_restore save_language_mode = make_scoped_restore (&language_mode); | |
13787 | language_mode = language_mode_manual; | |
13788 | ||
5ed8105e PA |
13789 | /* Note: we must not try to insert locations until after all |
13790 | breakpoints have been re-set. Otherwise, e.g., when re-setting | |
13791 | breakpoint 1, we'd insert the locations of breakpoint 2, which | |
13792 | hadn't been re-set yet, and thus may have stale locations. */ | |
4efc6507 | 13793 | |
5ed8105e PA |
13794 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
13795 | { | |
a70b8144 | 13796 | try |
bf469271 PA |
13797 | { |
13798 | breakpoint_re_set_one (b); | |
13799 | } | |
230d2906 | 13800 | catch (const gdb_exception &ex) |
bf469271 PA |
13801 | { |
13802 | exception_fprintf (gdb_stderr, ex, | |
13803 | "Error in re-setting breakpoint %d: ", | |
13804 | b->number); | |
13805 | } | |
5ed8105e | 13806 | } |
5ed8105e PA |
13807 | |
13808 | jit_breakpoint_re_set (); | |
13809 | } | |
6c95b8df | 13810 | |
af02033e PP |
13811 | create_overlay_event_breakpoint (); |
13812 | create_longjmp_master_breakpoint (); | |
13813 | create_std_terminate_master_breakpoint (); | |
186c406b | 13814 | create_exception_master_breakpoint (); |
2a7f3dff PA |
13815 | |
13816 | /* Now we can insert. */ | |
13817 | update_global_location_list (UGLL_MAY_INSERT); | |
c906108c SS |
13818 | } |
13819 | \f | |
c906108c SS |
13820 | /* Reset the thread number of this breakpoint: |
13821 | ||
13822 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13823 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13824 | void |
fba45db2 | 13825 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13826 | { |
13827 | if (b->thread != -1) | |
13828 | { | |
00431a78 | 13829 | b->thread = inferior_thread ()->global_num; |
6c95b8df PA |
13830 | |
13831 | /* We're being called after following a fork. The new fork is | |
13832 | selected as current, and unless this was a vfork will have a | |
13833 | different program space from the original thread. Reset that | |
13834 | as well. */ | |
13835 | b->loc->pspace = current_program_space; | |
c906108c SS |
13836 | } |
13837 | } | |
13838 | ||
03ac34d5 MS |
13839 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13840 | If from_tty is nonzero, it prints a message to that effect, | |
13841 | which ends with a period (no newline). */ | |
13842 | ||
c906108c | 13843 | void |
fba45db2 | 13844 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13845 | { |
52f0bd74 | 13846 | struct breakpoint *b; |
c906108c SS |
13847 | |
13848 | if (count < 0) | |
13849 | count = 0; | |
13850 | ||
13851 | ALL_BREAKPOINTS (b) | |
13852 | if (b->number == bptnum) | |
c5aa993b | 13853 | { |
d77f58be SS |
13854 | if (is_tracepoint (b)) |
13855 | { | |
13856 | if (from_tty && count != 0) | |
13857 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13858 | bptnum); | |
13859 | return; | |
13860 | } | |
13861 | ||
c5aa993b | 13862 | b->ignore_count = count; |
221ea385 KS |
13863 | if (from_tty) |
13864 | { | |
13865 | if (count == 0) | |
3e43a32a MS |
13866 | printf_filtered (_("Will stop next time " |
13867 | "breakpoint %d is reached."), | |
221ea385 KS |
13868 | bptnum); |
13869 | else if (count == 1) | |
a3f17187 | 13870 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13871 | bptnum); |
13872 | else | |
3e43a32a MS |
13873 | printf_filtered (_("Will ignore next %d " |
13874 | "crossings of breakpoint %d."), | |
221ea385 KS |
13875 | count, bptnum); |
13876 | } | |
76727919 | 13877 | gdb::observers::breakpoint_modified.notify (b); |
c5aa993b JM |
13878 | return; |
13879 | } | |
c906108c | 13880 | |
8a3fe4f8 | 13881 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13882 | } |
13883 | ||
c906108c SS |
13884 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13885 | ||
13886 | static void | |
0b39b52e | 13887 | ignore_command (const char *args, int from_tty) |
c906108c | 13888 | { |
0b39b52e | 13889 | const char *p = args; |
52f0bd74 | 13890 | int num; |
c906108c SS |
13891 | |
13892 | if (p == 0) | |
e2e0b3e5 | 13893 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13894 | |
c906108c | 13895 | num = get_number (&p); |
5c44784c | 13896 | if (num == 0) |
8a3fe4f8 | 13897 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13898 | if (*p == 0) |
8a3fe4f8 | 13899 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13900 | |
13901 | set_ignore_count (num, | |
13902 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13903 | from_tty); | |
221ea385 KS |
13904 | if (from_tty) |
13905 | printf_filtered ("\n"); | |
c906108c SS |
13906 | } |
13907 | \f | |
d0fe4701 XR |
13908 | |
13909 | /* Call FUNCTION on each of the breakpoints with numbers in the range | |
13910 | defined by BP_NUM_RANGE (an inclusive range). */ | |
c906108c SS |
13911 | |
13912 | static void | |
d0fe4701 XR |
13913 | map_breakpoint_number_range (std::pair<int, int> bp_num_range, |
13914 | gdb::function_view<void (breakpoint *)> function) | |
c906108c | 13915 | { |
d0fe4701 XR |
13916 | if (bp_num_range.first == 0) |
13917 | { | |
13918 | warning (_("bad breakpoint number at or near '%d'"), | |
13919 | bp_num_range.first); | |
13920 | } | |
13921 | else | |
c906108c | 13922 | { |
d0fe4701 | 13923 | struct breakpoint *b, *tmp; |
197f0a60 | 13924 | |
d0fe4701 | 13925 | for (int i = bp_num_range.first; i <= bp_num_range.second; i++) |
5c44784c | 13926 | { |
d0fe4701 XR |
13927 | bool match = false; |
13928 | ||
5c44784c | 13929 | ALL_BREAKPOINTS_SAFE (b, tmp) |
d0fe4701 | 13930 | if (b->number == i) |
5c44784c | 13931 | { |
bfd28288 | 13932 | match = true; |
48649e1b | 13933 | function (b); |
11cf8741 | 13934 | break; |
5c44784c | 13935 | } |
bfd28288 | 13936 | if (!match) |
d0fe4701 | 13937 | printf_unfiltered (_("No breakpoint number %d.\n"), i); |
c5aa993b | 13938 | } |
c906108c SS |
13939 | } |
13940 | } | |
13941 | ||
d0fe4701 XR |
13942 | /* Call FUNCTION on each of the breakpoints whose numbers are given in |
13943 | ARGS. */ | |
13944 | ||
13945 | static void | |
13946 | map_breakpoint_numbers (const char *args, | |
13947 | gdb::function_view<void (breakpoint *)> function) | |
13948 | { | |
13949 | if (args == NULL || *args == '\0') | |
13950 | error_no_arg (_("one or more breakpoint numbers")); | |
13951 | ||
13952 | number_or_range_parser parser (args); | |
13953 | ||
13954 | while (!parser.finished ()) | |
13955 | { | |
13956 | int num = parser.get_number (); | |
13957 | map_breakpoint_number_range (std::make_pair (num, num), function); | |
13958 | } | |
13959 | } | |
13960 | ||
13961 | /* Return the breakpoint location structure corresponding to the | |
13962 | BP_NUM and LOC_NUM values. */ | |
13963 | ||
0d381245 | 13964 | static struct bp_location * |
d0fe4701 | 13965 | find_location_by_number (int bp_num, int loc_num) |
0d381245 | 13966 | { |
0d381245 | 13967 | struct breakpoint *b; |
0d381245 VP |
13968 | |
13969 | ALL_BREAKPOINTS (b) | |
13970 | if (b->number == bp_num) | |
13971 | { | |
13972 | break; | |
13973 | } | |
13974 | ||
13975 | if (!b || b->number != bp_num) | |
d0fe4701 | 13976 | error (_("Bad breakpoint number '%d'"), bp_num); |
0d381245 | 13977 | |
0d381245 | 13978 | if (loc_num == 0) |
d0fe4701 | 13979 | error (_("Bad breakpoint location number '%d'"), loc_num); |
0d381245 | 13980 | |
d0fe4701 XR |
13981 | int n = 0; |
13982 | for (bp_location *loc = b->loc; loc != NULL; loc = loc->next) | |
13983 | if (++n == loc_num) | |
13984 | return loc; | |
13985 | ||
13986 | error (_("Bad breakpoint location number '%d'"), loc_num); | |
0d381245 VP |
13987 | } |
13988 | ||
95e95a6d PA |
13989 | /* Modes of operation for extract_bp_num. */ |
13990 | enum class extract_bp_kind | |
13991 | { | |
13992 | /* Extracting a breakpoint number. */ | |
13993 | bp, | |
13994 | ||
13995 | /* Extracting a location number. */ | |
13996 | loc, | |
13997 | }; | |
13998 | ||
13999 | /* Extract a breakpoint or location number (as determined by KIND) | |
14000 | from the string starting at START. TRAILER is a character which | |
14001 | can be found after the number. If you don't want a trailer, use | |
14002 | '\0'. If END_OUT is not NULL, it is set to point after the parsed | |
14003 | string. This always returns a positive integer. */ | |
14004 | ||
14005 | static int | |
14006 | extract_bp_num (extract_bp_kind kind, const char *start, | |
14007 | int trailer, const char **end_out = NULL) | |
14008 | { | |
14009 | const char *end = start; | |
14010 | int num = get_number_trailer (&end, trailer); | |
14011 | if (num < 0) | |
14012 | error (kind == extract_bp_kind::bp | |
14013 | ? _("Negative breakpoint number '%.*s'") | |
14014 | : _("Negative breakpoint location number '%.*s'"), | |
14015 | int (end - start), start); | |
14016 | if (num == 0) | |
14017 | error (kind == extract_bp_kind::bp | |
14018 | ? _("Bad breakpoint number '%.*s'") | |
14019 | : _("Bad breakpoint location number '%.*s'"), | |
14020 | int (end - start), start); | |
14021 | ||
14022 | if (end_out != NULL) | |
14023 | *end_out = end; | |
14024 | return num; | |
14025 | } | |
14026 | ||
14027 | /* Extract a breakpoint or location range (as determined by KIND) in | |
14028 | the form NUM1-NUM2 stored at &ARG[arg_offset]. Returns a std::pair | |
14029 | representing the (inclusive) range. The returned pair's elements | |
14030 | are always positive integers. */ | |
14031 | ||
14032 | static std::pair<int, int> | |
14033 | extract_bp_or_bp_range (extract_bp_kind kind, | |
14034 | const std::string &arg, | |
14035 | std::string::size_type arg_offset) | |
14036 | { | |
14037 | std::pair<int, int> range; | |
14038 | const char *bp_loc = &arg[arg_offset]; | |
14039 | std::string::size_type dash = arg.find ('-', arg_offset); | |
14040 | if (dash != std::string::npos) | |
14041 | { | |
14042 | /* bp_loc is a range (x-z). */ | |
14043 | if (arg.length () == dash + 1) | |
14044 | error (kind == extract_bp_kind::bp | |
14045 | ? _("Bad breakpoint number at or near: '%s'") | |
14046 | : _("Bad breakpoint location number at or near: '%s'"), | |
14047 | bp_loc); | |
14048 | ||
14049 | const char *end; | |
14050 | const char *start_first = bp_loc; | |
14051 | const char *start_second = &arg[dash + 1]; | |
14052 | range.first = extract_bp_num (kind, start_first, '-'); | |
14053 | range.second = extract_bp_num (kind, start_second, '\0', &end); | |
14054 | ||
14055 | if (range.first > range.second) | |
14056 | error (kind == extract_bp_kind::bp | |
14057 | ? _("Inverted breakpoint range at '%.*s'") | |
14058 | : _("Inverted breakpoint location range at '%.*s'"), | |
14059 | int (end - start_first), start_first); | |
14060 | } | |
14061 | else | |
14062 | { | |
14063 | /* bp_loc is a single value. */ | |
14064 | range.first = extract_bp_num (kind, bp_loc, '\0'); | |
14065 | range.second = range.first; | |
14066 | } | |
14067 | return range; | |
14068 | } | |
14069 | ||
d0fe4701 XR |
14070 | /* Extract the breakpoint/location range specified by ARG. Returns |
14071 | the breakpoint range in BP_NUM_RANGE, and the location range in | |
14072 | BP_LOC_RANGE. | |
14073 | ||
14074 | ARG may be in any of the following forms: | |
14075 | ||
14076 | x where 'x' is a breakpoint number. | |
14077 | x-y where 'x' and 'y' specify a breakpoint numbers range. | |
14078 | x.y where 'x' is a breakpoint number and 'y' a location number. | |
14079 | x.y-z where 'x' is a breakpoint number and 'y' and 'z' specify a | |
14080 | location number range. | |
14081 | */ | |
14082 | ||
cc638e86 | 14083 | static void |
d0fe4701 XR |
14084 | extract_bp_number_and_location (const std::string &arg, |
14085 | std::pair<int, int> &bp_num_range, | |
14086 | std::pair<int, int> &bp_loc_range) | |
14087 | { | |
14088 | std::string::size_type dot = arg.find ('.'); | |
14089 | ||
14090 | if (dot != std::string::npos) | |
14091 | { | |
14092 | /* Handle 'x.y' and 'x.y-z' cases. */ | |
14093 | ||
14094 | if (arg.length () == dot + 1 || dot == 0) | |
95e95a6d | 14095 | error (_("Bad breakpoint number at or near: '%s'"), arg.c_str ()); |
d0fe4701 | 14096 | |
95e95a6d PA |
14097 | bp_num_range.first |
14098 | = extract_bp_num (extract_bp_kind::bp, arg.c_str (), '.'); | |
14099 | bp_num_range.second = bp_num_range.first; | |
d0fe4701 | 14100 | |
95e95a6d PA |
14101 | bp_loc_range = extract_bp_or_bp_range (extract_bp_kind::loc, |
14102 | arg, dot + 1); | |
d0fe4701 XR |
14103 | } |
14104 | else | |
14105 | { | |
14106 | /* Handle x and x-y cases. */ | |
d0fe4701 | 14107 | |
95e95a6d | 14108 | bp_num_range = extract_bp_or_bp_range (extract_bp_kind::bp, arg, 0); |
d0fe4701 XR |
14109 | bp_loc_range.first = 0; |
14110 | bp_loc_range.second = 0; | |
14111 | } | |
d0fe4701 XR |
14112 | } |
14113 | ||
14114 | /* Enable or disable a breakpoint location BP_NUM.LOC_NUM. ENABLE | |
14115 | specifies whether to enable or disable. */ | |
14116 | ||
14117 | static void | |
14118 | enable_disable_bp_num_loc (int bp_num, int loc_num, bool enable) | |
14119 | { | |
14120 | struct bp_location *loc = find_location_by_number (bp_num, loc_num); | |
14121 | if (loc != NULL) | |
14122 | { | |
14123 | if (loc->enabled != enable) | |
14124 | { | |
14125 | loc->enabled = enable; | |
14126 | mark_breakpoint_location_modified (loc); | |
14127 | } | |
14128 | if (target_supports_enable_disable_tracepoint () | |
14129 | && current_trace_status ()->running && loc->owner | |
14130 | && is_tracepoint (loc->owner)) | |
14131 | target_disable_tracepoint (loc); | |
14132 | } | |
14133 | update_global_location_list (UGLL_DONT_INSERT); | |
d7154a8d JV |
14134 | |
14135 | gdb::observers::breakpoint_modified.notify (loc->owner); | |
d0fe4701 XR |
14136 | } |
14137 | ||
14138 | /* Enable or disable a range of breakpoint locations. BP_NUM is the | |
14139 | number of the breakpoint, and BP_LOC_RANGE specifies the | |
14140 | (inclusive) range of location numbers of that breakpoint to | |
14141 | enable/disable. ENABLE specifies whether to enable or disable the | |
14142 | location. */ | |
14143 | ||
14144 | static void | |
14145 | enable_disable_breakpoint_location_range (int bp_num, | |
14146 | std::pair<int, int> &bp_loc_range, | |
14147 | bool enable) | |
14148 | { | |
14149 | for (int i = bp_loc_range.first; i <= bp_loc_range.second; i++) | |
14150 | enable_disable_bp_num_loc (bp_num, i, enable); | |
14151 | } | |
0d381245 | 14152 | |
1900040c MS |
14153 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14154 | If from_tty is nonzero, it prints a message to that effect, | |
14155 | which ends with a period (no newline). */ | |
14156 | ||
c906108c | 14157 | void |
fba45db2 | 14158 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14159 | { |
14160 | /* Never disable a watchpoint scope breakpoint; we want to | |
14161 | hit them when we leave scope so we can delete both the | |
14162 | watchpoint and its scope breakpoint at that time. */ | |
14163 | if (bpt->type == bp_watchpoint_scope) | |
14164 | return; | |
14165 | ||
b5de0fa7 | 14166 | bpt->enable_state = bp_disabled; |
c906108c | 14167 | |
b775012e LM |
14168 | /* Mark breakpoint locations modified. */ |
14169 | mark_breakpoint_modified (bpt); | |
14170 | ||
d248b706 KY |
14171 | if (target_supports_enable_disable_tracepoint () |
14172 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14173 | { | |
14174 | struct bp_location *location; | |
14175 | ||
14176 | for (location = bpt->loc; location; location = location->next) | |
14177 | target_disable_tracepoint (location); | |
14178 | } | |
14179 | ||
44702360 | 14180 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 14181 | |
76727919 | 14182 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14183 | } |
14184 | ||
d0fe4701 XR |
14185 | /* Enable or disable the breakpoint(s) or breakpoint location(s) |
14186 | specified in ARGS. ARGS may be in any of the formats handled by | |
14187 | extract_bp_number_and_location. ENABLE specifies whether to enable | |
14188 | or disable the breakpoints/locations. */ | |
14189 | ||
c906108c | 14190 | static void |
d0fe4701 | 14191 | enable_disable_command (const char *args, int from_tty, bool enable) |
c906108c | 14192 | { |
c906108c | 14193 | if (args == 0) |
46c6471b PA |
14194 | { |
14195 | struct breakpoint *bpt; | |
14196 | ||
14197 | ALL_BREAKPOINTS (bpt) | |
14198 | if (user_breakpoint_p (bpt)) | |
d0fe4701 XR |
14199 | { |
14200 | if (enable) | |
14201 | enable_breakpoint (bpt); | |
14202 | else | |
14203 | disable_breakpoint (bpt); | |
14204 | } | |
46c6471b | 14205 | } |
9eaabc75 | 14206 | else |
0d381245 | 14207 | { |
cb791d59 | 14208 | std::string num = extract_arg (&args); |
9eaabc75 | 14209 | |
cb791d59 | 14210 | while (!num.empty ()) |
d248b706 | 14211 | { |
d0fe4701 | 14212 | std::pair<int, int> bp_num_range, bp_loc_range; |
9eaabc75 | 14213 | |
cc638e86 PA |
14214 | extract_bp_number_and_location (num, bp_num_range, bp_loc_range); |
14215 | ||
14216 | if (bp_loc_range.first == bp_loc_range.second | |
14217 | && bp_loc_range.first == 0) | |
d0fe4701 | 14218 | { |
cc638e86 PA |
14219 | /* Handle breakpoint ids with formats 'x' or 'x-z'. */ |
14220 | map_breakpoint_number_range (bp_num_range, | |
14221 | enable | |
14222 | ? enable_breakpoint | |
14223 | : disable_breakpoint); | |
14224 | } | |
14225 | else | |
14226 | { | |
14227 | /* Handle breakpoint ids with formats 'x.y' or | |
14228 | 'x.y-z'. */ | |
14229 | enable_disable_breakpoint_location_range | |
14230 | (bp_num_range.first, bp_loc_range, enable); | |
b775012e | 14231 | } |
9eaabc75 | 14232 | num = extract_arg (&args); |
d248b706 | 14233 | } |
0d381245 | 14234 | } |
c906108c SS |
14235 | } |
14236 | ||
d0fe4701 XR |
14237 | /* The disable command disables the specified breakpoints/locations |
14238 | (or all defined breakpoints) so they're no longer effective in | |
14239 | stopping the inferior. ARGS may be in any of the forms defined in | |
14240 | extract_bp_number_and_location. */ | |
14241 | ||
14242 | static void | |
14243 | disable_command (const char *args, int from_tty) | |
14244 | { | |
14245 | enable_disable_command (args, from_tty, false); | |
14246 | } | |
14247 | ||
c906108c | 14248 | static void |
816338b5 SS |
14249 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14250 | int count) | |
c906108c | 14251 | { |
afe38095 | 14252 | int target_resources_ok; |
c906108c SS |
14253 | |
14254 | if (bpt->type == bp_hardware_breakpoint) | |
14255 | { | |
14256 | int i; | |
c5aa993b | 14257 | i = hw_breakpoint_used_count (); |
53a5351d | 14258 | target_resources_ok = |
d92524f1 | 14259 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14260 | i + 1, 0); |
c906108c | 14261 | if (target_resources_ok == 0) |
8a3fe4f8 | 14262 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14263 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14264 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14265 | } |
14266 | ||
cc60f2e3 | 14267 | if (is_watchpoint (bpt)) |
c906108c | 14268 | { |
d07205c2 | 14269 | /* Initialize it just to avoid a GCC false warning. */ |
f486487f | 14270 | enum enable_state orig_enable_state = bp_disabled; |
dde02812 | 14271 | |
a70b8144 | 14272 | try |
c906108c | 14273 | { |
3a5c3e22 PA |
14274 | struct watchpoint *w = (struct watchpoint *) bpt; |
14275 | ||
1e718ff1 TJB |
14276 | orig_enable_state = bpt->enable_state; |
14277 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14278 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14279 | } |
230d2906 | 14280 | catch (const gdb_exception &e) |
c5aa993b | 14281 | { |
1e718ff1 | 14282 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14283 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14284 | bpt->number); | |
14285 | return; | |
c5aa993b | 14286 | } |
c906108c | 14287 | } |
0101ce28 | 14288 | |
b775012e LM |
14289 | bpt->enable_state = bp_enabled; |
14290 | ||
14291 | /* Mark breakpoint locations modified. */ | |
14292 | mark_breakpoint_modified (bpt); | |
14293 | ||
d248b706 KY |
14294 | if (target_supports_enable_disable_tracepoint () |
14295 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14296 | { | |
14297 | struct bp_location *location; | |
14298 | ||
14299 | for (location = bpt->loc; location; location = location->next) | |
14300 | target_enable_tracepoint (location); | |
14301 | } | |
14302 | ||
b4c291bb | 14303 | bpt->disposition = disposition; |
816338b5 | 14304 | bpt->enable_count = count; |
44702360 | 14305 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 14306 | |
76727919 | 14307 | gdb::observers::breakpoint_modified.notify (bpt); |
c906108c SS |
14308 | } |
14309 | ||
fe3f5fa8 | 14310 | |
c906108c | 14311 | void |
fba45db2 | 14312 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14313 | { |
816338b5 | 14314 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14315 | } |
14316 | ||
d0fe4701 XR |
14317 | /* The enable command enables the specified breakpoints/locations (or |
14318 | all defined breakpoints) so they once again become (or continue to | |
14319 | be) effective in stopping the inferior. ARGS may be in any of the | |
14320 | forms defined in extract_bp_number_and_location. */ | |
c906108c | 14321 | |
c906108c | 14322 | static void |
981a3fb3 | 14323 | enable_command (const char *args, int from_tty) |
c906108c | 14324 | { |
d0fe4701 | 14325 | enable_disable_command (args, from_tty, true); |
c906108c SS |
14326 | } |
14327 | ||
c906108c | 14328 | static void |
4495129a | 14329 | enable_once_command (const char *args, int from_tty) |
c906108c | 14330 | { |
48649e1b TT |
14331 | map_breakpoint_numbers |
14332 | (args, [&] (breakpoint *b) | |
14333 | { | |
14334 | iterate_over_related_breakpoints | |
14335 | (b, [&] (breakpoint *bpt) | |
14336 | { | |
14337 | enable_breakpoint_disp (bpt, disp_disable, 1); | |
14338 | }); | |
14339 | }); | |
816338b5 SS |
14340 | } |
14341 | ||
14342 | static void | |
4495129a | 14343 | enable_count_command (const char *args, int from_tty) |
816338b5 | 14344 | { |
b9d61307 SM |
14345 | int count; |
14346 | ||
14347 | if (args == NULL) | |
14348 | error_no_arg (_("hit count")); | |
14349 | ||
14350 | count = get_number (&args); | |
816338b5 | 14351 | |
48649e1b TT |
14352 | map_breakpoint_numbers |
14353 | (args, [&] (breakpoint *b) | |
14354 | { | |
14355 | iterate_over_related_breakpoints | |
14356 | (b, [&] (breakpoint *bpt) | |
14357 | { | |
14358 | enable_breakpoint_disp (bpt, disp_disable, count); | |
14359 | }); | |
14360 | }); | |
c906108c SS |
14361 | } |
14362 | ||
c906108c | 14363 | static void |
4495129a | 14364 | enable_delete_command (const char *args, int from_tty) |
c906108c | 14365 | { |
48649e1b TT |
14366 | map_breakpoint_numbers |
14367 | (args, [&] (breakpoint *b) | |
14368 | { | |
14369 | iterate_over_related_breakpoints | |
14370 | (b, [&] (breakpoint *bpt) | |
14371 | { | |
14372 | enable_breakpoint_disp (bpt, disp_del, 1); | |
14373 | }); | |
14374 | }); | |
c906108c SS |
14375 | } |
14376 | \f | |
fa8d40ab | 14377 | static void |
981a3fb3 | 14378 | set_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14379 | { |
14380 | } | |
14381 | ||
14382 | static void | |
981a3fb3 | 14383 | show_breakpoint_cmd (const char *args, int from_tty) |
fa8d40ab JJ |
14384 | { |
14385 | } | |
14386 | ||
1f3b5d1b PP |
14387 | /* Invalidate last known value of any hardware watchpoint if |
14388 | the memory which that value represents has been written to by | |
14389 | GDB itself. */ | |
14390 | ||
14391 | static void | |
8de0566d YQ |
14392 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14393 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14394 | const bfd_byte *data) |
14395 | { | |
14396 | struct breakpoint *bp; | |
14397 | ||
14398 | ALL_BREAKPOINTS (bp) | |
14399 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14400 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14401 | { |
3a5c3e22 | 14402 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14403 | |
850645cf | 14404 | if (wp->val_valid && wp->val != nullptr) |
3a5c3e22 PA |
14405 | { |
14406 | struct bp_location *loc; | |
14407 | ||
14408 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14409 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14410 | && loc->address + loc->length > addr | |
14411 | && addr + len > loc->address) | |
14412 | { | |
3a5c3e22 | 14413 | wp->val = NULL; |
4c1d86d9 | 14414 | wp->val_valid = false; |
3a5c3e22 PA |
14415 | } |
14416 | } | |
1f3b5d1b PP |
14417 | } |
14418 | } | |
14419 | ||
8181d85f DJ |
14420 | /* Create and insert a breakpoint for software single step. */ |
14421 | ||
14422 | void | |
6c95b8df | 14423 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
accd0bcd | 14424 | const address_space *aspace, |
4a64f543 | 14425 | CORE_ADDR next_pc) |
8181d85f | 14426 | { |
7c16b83e PA |
14427 | struct thread_info *tp = inferior_thread (); |
14428 | struct symtab_and_line sal; | |
14429 | CORE_ADDR pc = next_pc; | |
8181d85f | 14430 | |
34b7e8a6 PA |
14431 | if (tp->control.single_step_breakpoints == NULL) |
14432 | { | |
14433 | tp->control.single_step_breakpoints | |
5d5658a1 | 14434 | = new_single_step_breakpoint (tp->global_num, gdbarch); |
34b7e8a6 | 14435 | } |
8181d85f | 14436 | |
7c16b83e PA |
14437 | sal = find_pc_line (pc, 0); |
14438 | sal.pc = pc; | |
14439 | sal.section = find_pc_overlay (pc); | |
14440 | sal.explicit_pc = 1; | |
34b7e8a6 | 14441 | add_location_to_breakpoint (tp->control.single_step_breakpoints, &sal); |
8181d85f | 14442 | |
7c16b83e | 14443 | update_global_location_list (UGLL_INSERT); |
8181d85f DJ |
14444 | } |
14445 | ||
93f9a11f YQ |
14446 | /* Insert single step breakpoints according to the current state. */ |
14447 | ||
14448 | int | |
14449 | insert_single_step_breakpoints (struct gdbarch *gdbarch) | |
14450 | { | |
f5ea389a | 14451 | struct regcache *regcache = get_current_regcache (); |
a0ff9e1a | 14452 | std::vector<CORE_ADDR> next_pcs; |
93f9a11f | 14453 | |
f5ea389a | 14454 | next_pcs = gdbarch_software_single_step (gdbarch, regcache); |
93f9a11f | 14455 | |
a0ff9e1a | 14456 | if (!next_pcs.empty ()) |
93f9a11f | 14457 | { |
f5ea389a | 14458 | struct frame_info *frame = get_current_frame (); |
8b86c959 | 14459 | const address_space *aspace = get_frame_address_space (frame); |
93f9a11f | 14460 | |
a0ff9e1a | 14461 | for (CORE_ADDR pc : next_pcs) |
93f9a11f YQ |
14462 | insert_single_step_breakpoint (gdbarch, aspace, pc); |
14463 | ||
93f9a11f YQ |
14464 | return 1; |
14465 | } | |
14466 | else | |
14467 | return 0; | |
14468 | } | |
14469 | ||
34b7e8a6 | 14470 | /* See breakpoint.h. */ |
f02253f1 HZ |
14471 | |
14472 | int | |
7c16b83e | 14473 | breakpoint_has_location_inserted_here (struct breakpoint *bp, |
accd0bcd | 14474 | const address_space *aspace, |
7c16b83e | 14475 | CORE_ADDR pc) |
1aafd4da | 14476 | { |
7c16b83e | 14477 | struct bp_location *loc; |
1aafd4da | 14478 | |
7c16b83e PA |
14479 | for (loc = bp->loc; loc != NULL; loc = loc->next) |
14480 | if (loc->inserted | |
14481 | && breakpoint_location_address_match (loc, aspace, pc)) | |
14482 | return 1; | |
1aafd4da | 14483 | |
7c16b83e | 14484 | return 0; |
ef370185 JB |
14485 | } |
14486 | ||
14487 | /* Check whether a software single-step breakpoint is inserted at | |
14488 | PC. */ | |
14489 | ||
14490 | int | |
accd0bcd | 14491 | single_step_breakpoint_inserted_here_p (const address_space *aspace, |
ef370185 JB |
14492 | CORE_ADDR pc) |
14493 | { | |
34b7e8a6 PA |
14494 | struct breakpoint *bpt; |
14495 | ||
14496 | ALL_BREAKPOINTS (bpt) | |
14497 | { | |
14498 | if (bpt->type == bp_single_step | |
14499 | && breakpoint_has_location_inserted_here (bpt, aspace, pc)) | |
14500 | return 1; | |
14501 | } | |
14502 | return 0; | |
1aafd4da UW |
14503 | } |
14504 | ||
1042e4c0 SS |
14505 | /* Tracepoint-specific operations. */ |
14506 | ||
14507 | /* Set tracepoint count to NUM. */ | |
14508 | static void | |
14509 | set_tracepoint_count (int num) | |
14510 | { | |
14511 | tracepoint_count = num; | |
4fa62494 | 14512 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14513 | } |
14514 | ||
70221824 | 14515 | static void |
0b39b52e | 14516 | trace_command (const char *arg, int from_tty) |
1042e4c0 | 14517 | { |
ffc2605c TT |
14518 | event_location_up location = string_to_event_location (&arg, |
14519 | current_language); | |
bac7c5cf GB |
14520 | const struct breakpoint_ops *ops = breakpoint_ops_for_event_location |
14521 | (location.get (), true /* is_tracepoint */); | |
55aa24fb | 14522 | |
558a9d82 | 14523 | create_breakpoint (get_current_arch (), |
ffc2605c | 14524 | location.get (), |
f00aae0f | 14525 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14526 | 0 /* tempflag */, |
14527 | bp_tracepoint /* type_wanted */, | |
14528 | 0 /* Ignore count */, | |
14529 | pending_break_support, | |
14530 | ops, | |
14531 | from_tty, | |
14532 | 1 /* enabled */, | |
14533 | 0 /* internal */, 0); | |
1042e4c0 SS |
14534 | } |
14535 | ||
70221824 | 14536 | static void |
0b39b52e | 14537 | ftrace_command (const char *arg, int from_tty) |
7a697b8d | 14538 | { |
ffc2605c TT |
14539 | event_location_up location = string_to_event_location (&arg, |
14540 | current_language); | |
558a9d82 | 14541 | create_breakpoint (get_current_arch (), |
ffc2605c | 14542 | location.get (), |
f00aae0f | 14543 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14544 | 0 /* tempflag */, |
14545 | bp_fast_tracepoint /* type_wanted */, | |
14546 | 0 /* Ignore count */, | |
14547 | pending_break_support, | |
14548 | &tracepoint_breakpoint_ops, | |
14549 | from_tty, | |
14550 | 1 /* enabled */, | |
14551 | 0 /* internal */, 0); | |
0fb4aa4b PA |
14552 | } |
14553 | ||
14554 | /* strace command implementation. Creates a static tracepoint. */ | |
14555 | ||
70221824 | 14556 | static void |
0b39b52e | 14557 | strace_command (const char *arg, int from_tty) |
0fb4aa4b | 14558 | { |
983af33b | 14559 | struct breakpoint_ops *ops; |
ffc2605c | 14560 | event_location_up location; |
983af33b SDJ |
14561 | |
14562 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14563 | or with a normal static tracepoint. */ | |
61012eef | 14564 | if (arg && startswith (arg, "-m") && isspace (arg[2])) |
f00aae0f KS |
14565 | { |
14566 | ops = &strace_marker_breakpoint_ops; | |
a20714ff | 14567 | location = new_linespec_location (&arg, symbol_name_match_type::FULL); |
f00aae0f | 14568 | } |
983af33b | 14569 | else |
f00aae0f KS |
14570 | { |
14571 | ops = &tracepoint_breakpoint_ops; | |
14572 | location = string_to_event_location (&arg, current_language); | |
14573 | } | |
983af33b | 14574 | |
558a9d82 | 14575 | create_breakpoint (get_current_arch (), |
ffc2605c | 14576 | location.get (), |
f00aae0f | 14577 | NULL, 0, arg, 1 /* parse arg */, |
558a9d82 YQ |
14578 | 0 /* tempflag */, |
14579 | bp_static_tracepoint /* type_wanted */, | |
14580 | 0 /* Ignore count */, | |
14581 | pending_break_support, | |
14582 | ops, | |
14583 | from_tty, | |
14584 | 1 /* enabled */, | |
14585 | 0 /* internal */, 0); | |
7a697b8d SS |
14586 | } |
14587 | ||
409873ef SS |
14588 | /* Set up a fake reader function that gets command lines from a linked |
14589 | list that was acquired during tracepoint uploading. */ | |
14590 | ||
14591 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14592 | static int next_cmd; |
409873ef SS |
14593 | |
14594 | static char * | |
14595 | read_uploaded_action (void) | |
14596 | { | |
a18ba4e4 | 14597 | char *rslt = nullptr; |
409873ef | 14598 | |
a18ba4e4 SM |
14599 | if (next_cmd < this_utp->cmd_strings.size ()) |
14600 | { | |
67aa1f3c | 14601 | rslt = this_utp->cmd_strings[next_cmd].get (); |
a18ba4e4 SM |
14602 | next_cmd++; |
14603 | } | |
409873ef SS |
14604 | |
14605 | return rslt; | |
14606 | } | |
14607 | ||
00bf0b85 SS |
14608 | /* Given information about a tracepoint as recorded on a target (which |
14609 | can be either a live system or a trace file), attempt to create an | |
14610 | equivalent GDB tracepoint. This is not a reliable process, since | |
14611 | the target does not necessarily have all the information used when | |
14612 | the tracepoint was originally defined. */ | |
14613 | ||
d9b3f62e | 14614 | struct tracepoint * |
00bf0b85 | 14615 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14616 | { |
f2fc3015 TT |
14617 | const char *addr_str; |
14618 | char small_buf[100]; | |
d9b3f62e | 14619 | struct tracepoint *tp; |
fd9b8c24 | 14620 | |
409873ef | 14621 | if (utp->at_string) |
67aa1f3c | 14622 | addr_str = utp->at_string.get (); |
409873ef SS |
14623 | else |
14624 | { | |
14625 | /* In the absence of a source location, fall back to raw | |
14626 | address. Since there is no way to confirm that the address | |
14627 | means the same thing as when the trace was started, warn the | |
14628 | user. */ | |
3e43a32a MS |
14629 | warning (_("Uploaded tracepoint %d has no " |
14630 | "source location, using raw address"), | |
409873ef | 14631 | utp->number); |
8c042590 | 14632 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
14633 | addr_str = small_buf; |
14634 | } | |
14635 | ||
14636 | /* There's not much we can do with a sequence of bytecodes. */ | |
14637 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14638 | warning (_("Uploaded tracepoint %d condition " |
14639 | "has no source form, ignoring it"), | |
409873ef | 14640 | utp->number); |
d5551862 | 14641 | |
ffc2605c TT |
14642 | event_location_up location = string_to_event_location (&addr_str, |
14643 | current_language); | |
8cdf0e15 | 14644 | if (!create_breakpoint (get_current_arch (), |
ffc2605c | 14645 | location.get (), |
67aa1f3c | 14646 | utp->cond_string.get (), -1, addr_str, |
e7e0cddf | 14647 | 0 /* parse cond/thread */, |
8cdf0e15 | 14648 | 0 /* tempflag */, |
0fb4aa4b | 14649 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14650 | 0 /* Ignore count */, |
14651 | pending_break_support, | |
348d480f | 14652 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14653 | 0 /* from_tty */, |
84f4c1fe | 14654 | utp->enabled /* enabled */, |
44f238bb PA |
14655 | 0 /* internal */, |
14656 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
ffc2605c | 14657 | return NULL; |
fd9b8c24 | 14658 | |
409873ef | 14659 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14660 | tp = get_tracepoint (tracepoint_count); |
14661 | gdb_assert (tp != NULL); | |
d5551862 | 14662 | |
00bf0b85 SS |
14663 | if (utp->pass > 0) |
14664 | { | |
8c042590 | 14665 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
c1fc2657 | 14666 | tp->number); |
00bf0b85 | 14667 | |
409873ef | 14668 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14669 | } |
14670 | ||
409873ef SS |
14671 | /* If we have uploaded versions of the original commands, set up a |
14672 | special-purpose "reader" function and call the usual command line | |
14673 | reader, then pass the result to the breakpoint command-setting | |
14674 | function. */ | |
a18ba4e4 | 14675 | if (!utp->cmd_strings.empty ()) |
00bf0b85 | 14676 | { |
12973681 | 14677 | counted_command_line cmd_list; |
00bf0b85 | 14678 | |
409873ef | 14679 | this_utp = utp; |
3149d8c1 | 14680 | next_cmd = 0; |
d5551862 | 14681 | |
60b3cef2 | 14682 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL); |
409873ef | 14683 | |
c1fc2657 | 14684 | breakpoint_set_commands (tp, std::move (cmd_list)); |
00bf0b85 | 14685 | } |
a18ba4e4 SM |
14686 | else if (!utp->actions.empty () |
14687 | || !utp->step_actions.empty ()) | |
3e43a32a MS |
14688 | warning (_("Uploaded tracepoint %d actions " |
14689 | "have no source form, ignoring them"), | |
409873ef | 14690 | utp->number); |
00bf0b85 | 14691 | |
f196051f | 14692 | /* Copy any status information that might be available. */ |
c1fc2657 | 14693 | tp->hit_count = utp->hit_count; |
f196051f SS |
14694 | tp->traceframe_usage = utp->traceframe_usage; |
14695 | ||
00bf0b85 | 14696 | return tp; |
d9b3f62e | 14697 | } |
00bf0b85 | 14698 | |
1042e4c0 SS |
14699 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14700 | omitted. */ | |
14701 | ||
14702 | static void | |
1d12d88f | 14703 | info_tracepoints_command (const char *args, int from_tty) |
1042e4c0 | 14704 | { |
79a45e25 | 14705 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14706 | int num_printed; |
1042e4c0 | 14707 | |
5c458ae8 | 14708 | num_printed = breakpoint_1 (args, false, is_tracepoint); |
d77f58be SS |
14709 | |
14710 | if (num_printed == 0) | |
1042e4c0 | 14711 | { |
e5a67952 | 14712 | if (args == NULL || *args == '\0') |
112e8700 | 14713 | uiout->message ("No tracepoints.\n"); |
d77f58be | 14714 | else |
112e8700 | 14715 | uiout->message ("No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14716 | } |
ad443146 SS |
14717 | |
14718 | default_collect_info (); | |
1042e4c0 SS |
14719 | } |
14720 | ||
4a64f543 | 14721 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14722 | Not supported by all targets. */ |
14723 | static void | |
5fed81ff | 14724 | enable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14725 | { |
14726 | enable_command (args, from_tty); | |
14727 | } | |
14728 | ||
4a64f543 | 14729 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14730 | Not supported by all targets. */ |
14731 | static void | |
5fed81ff | 14732 | disable_trace_command (const char *args, int from_tty) |
1042e4c0 SS |
14733 | { |
14734 | disable_command (args, from_tty); | |
14735 | } | |
14736 | ||
4a64f543 | 14737 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 | 14738 | static void |
4495129a | 14739 | delete_trace_command (const char *arg, int from_tty) |
1042e4c0 | 14740 | { |
35df4500 | 14741 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14742 | |
14743 | dont_repeat (); | |
14744 | ||
14745 | if (arg == 0) | |
14746 | { | |
14747 | int breaks_to_delete = 0; | |
14748 | ||
14749 | /* Delete all breakpoints if no argument. | |
14750 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14751 | have to be deleted with an explicit breakpoint number |
14752 | argument. */ | |
1042e4c0 | 14753 | ALL_TRACEPOINTS (b) |
46c6471b | 14754 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14755 | { |
14756 | breaks_to_delete = 1; | |
14757 | break; | |
14758 | } | |
1042e4c0 SS |
14759 | |
14760 | /* Ask user only if there are some breakpoints to delete. */ | |
14761 | if (!from_tty | |
14762 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14763 | { | |
35df4500 | 14764 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14765 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14766 | delete_breakpoint (b); |
1042e4c0 SS |
14767 | } |
14768 | } | |
14769 | else | |
48649e1b | 14770 | map_breakpoint_numbers |
b926417a | 14771 | (arg, [&] (breakpoint *br) |
48649e1b | 14772 | { |
b926417a | 14773 | iterate_over_related_breakpoints (br, delete_breakpoint); |
48649e1b | 14774 | }); |
1042e4c0 SS |
14775 | } |
14776 | ||
197f0a60 TT |
14777 | /* Helper function for trace_pass_command. */ |
14778 | ||
14779 | static void | |
d9b3f62e | 14780 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14781 | { |
d9b3f62e | 14782 | tp->pass_count = count; |
76727919 | 14783 | gdb::observers::breakpoint_modified.notify (tp); |
197f0a60 TT |
14784 | if (from_tty) |
14785 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
c1fc2657 | 14786 | tp->number, count); |
197f0a60 TT |
14787 | } |
14788 | ||
1042e4c0 SS |
14789 | /* Set passcount for tracepoint. |
14790 | ||
14791 | First command argument is passcount, second is tracepoint number. | |
14792 | If tracepoint number omitted, apply to most recently defined. | |
14793 | Also accepts special argument "all". */ | |
14794 | ||
14795 | static void | |
0b39b52e | 14796 | trace_pass_command (const char *args, int from_tty) |
1042e4c0 | 14797 | { |
d9b3f62e | 14798 | struct tracepoint *t1; |
0b39b52e | 14799 | ULONGEST count; |
1042e4c0 SS |
14800 | |
14801 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14802 | error (_("passcount command requires an " |
14803 | "argument (count + optional TP num)")); | |
1042e4c0 | 14804 | |
0b39b52e | 14805 | count = strtoulst (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 14806 | |
529480d0 | 14807 | args = skip_spaces (args); |
1042e4c0 SS |
14808 | if (*args && strncasecmp (args, "all", 3) == 0) |
14809 | { | |
d9b3f62e PA |
14810 | struct breakpoint *b; |
14811 | ||
1042e4c0 | 14812 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14813 | if (*args) |
14814 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14815 | |
d9b3f62e | 14816 | ALL_TRACEPOINTS (b) |
197f0a60 | 14817 | { |
d9b3f62e | 14818 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14819 | trace_pass_set_count (t1, count, from_tty); |
14820 | } | |
14821 | } | |
14822 | else if (*args == '\0') | |
1042e4c0 | 14823 | { |
5fa1d40e | 14824 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 14825 | if (t1) |
197f0a60 TT |
14826 | trace_pass_set_count (t1, count, from_tty); |
14827 | } | |
14828 | else | |
14829 | { | |
bfd28288 PA |
14830 | number_or_range_parser parser (args); |
14831 | while (!parser.finished ()) | |
1042e4c0 | 14832 | { |
bfd28288 | 14833 | t1 = get_tracepoint_by_number (&args, &parser); |
197f0a60 TT |
14834 | if (t1) |
14835 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14836 | } |
14837 | } | |
1042e4c0 SS |
14838 | } |
14839 | ||
d9b3f62e | 14840 | struct tracepoint * |
1042e4c0 SS |
14841 | get_tracepoint (int num) |
14842 | { | |
14843 | struct breakpoint *t; | |
14844 | ||
14845 | ALL_TRACEPOINTS (t) | |
14846 | if (t->number == num) | |
d9b3f62e | 14847 | return (struct tracepoint *) t; |
1042e4c0 SS |
14848 | |
14849 | return NULL; | |
14850 | } | |
14851 | ||
d5551862 SS |
14852 | /* Find the tracepoint with the given target-side number (which may be |
14853 | different from the tracepoint number after disconnecting and | |
14854 | reconnecting). */ | |
14855 | ||
d9b3f62e | 14856 | struct tracepoint * |
d5551862 SS |
14857 | get_tracepoint_by_number_on_target (int num) |
14858 | { | |
d9b3f62e | 14859 | struct breakpoint *b; |
d5551862 | 14860 | |
d9b3f62e PA |
14861 | ALL_TRACEPOINTS (b) |
14862 | { | |
14863 | struct tracepoint *t = (struct tracepoint *) b; | |
14864 | ||
14865 | if (t->number_on_target == num) | |
14866 | return t; | |
14867 | } | |
d5551862 SS |
14868 | |
14869 | return NULL; | |
14870 | } | |
14871 | ||
1042e4c0 | 14872 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 14873 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
14874 | If the argument is missing, the most recent tracepoint |
14875 | (tracepoint_count) is returned. */ | |
14876 | ||
d9b3f62e | 14877 | struct tracepoint * |
0b39b52e | 14878 | get_tracepoint_by_number (const char **arg, |
bfd28288 | 14879 | number_or_range_parser *parser) |
1042e4c0 | 14880 | { |
1042e4c0 SS |
14881 | struct breakpoint *t; |
14882 | int tpnum; | |
0b39b52e | 14883 | const char *instring = arg == NULL ? NULL : *arg; |
1042e4c0 | 14884 | |
bfd28288 | 14885 | if (parser != NULL) |
197f0a60 | 14886 | { |
bfd28288 PA |
14887 | gdb_assert (!parser->finished ()); |
14888 | tpnum = parser->get_number (); | |
197f0a60 TT |
14889 | } |
14890 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 14891 | tpnum = tracepoint_count; |
1042e4c0 | 14892 | else |
197f0a60 | 14893 | tpnum = get_number (arg); |
1042e4c0 SS |
14894 | |
14895 | if (tpnum <= 0) | |
14896 | { | |
14897 | if (instring && *instring) | |
14898 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14899 | instring); | |
14900 | else | |
5fa1d40e | 14901 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
14902 | return NULL; |
14903 | } | |
14904 | ||
14905 | ALL_TRACEPOINTS (t) | |
14906 | if (t->number == tpnum) | |
14907 | { | |
d9b3f62e | 14908 | return (struct tracepoint *) t; |
1042e4c0 SS |
14909 | } |
14910 | ||
1042e4c0 SS |
14911 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14912 | return NULL; | |
14913 | } | |
14914 | ||
d9b3f62e PA |
14915 | void |
14916 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14917 | { | |
14918 | if (b->thread != -1) | |
14919 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14920 | ||
14921 | if (b->task != 0) | |
14922 | fprintf_unfiltered (fp, " task %d", b->task); | |
14923 | ||
14924 | fprintf_unfiltered (fp, "\n"); | |
14925 | } | |
14926 | ||
6149aea9 PA |
14927 | /* Save information on user settable breakpoints (watchpoints, etc) to |
14928 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
14929 | on each breakpoint and only include the ones for which it returns | |
f2478a7e | 14930 | true. */ |
6149aea9 | 14931 | |
1042e4c0 | 14932 | static void |
4495129a | 14933 | save_breakpoints (const char *filename, int from_tty, |
f2478a7e | 14934 | bool (*filter) (const struct breakpoint *)) |
1042e4c0 SS |
14935 | { |
14936 | struct breakpoint *tp; | |
6149aea9 | 14937 | int any = 0; |
6149aea9 | 14938 | int extra_trace_bits = 0; |
1042e4c0 | 14939 | |
6149aea9 PA |
14940 | if (filename == 0 || *filename == 0) |
14941 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
14942 | |
14943 | /* See if we have anything to save. */ | |
6149aea9 | 14944 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14945 | { |
6149aea9 | 14946 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14947 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
14948 | continue; |
14949 | ||
14950 | /* If we have a filter, only save the breakpoints it accepts. */ | |
14951 | if (filter && !filter (tp)) | |
14952 | continue; | |
14953 | ||
14954 | any = 1; | |
14955 | ||
14956 | if (is_tracepoint (tp)) | |
14957 | { | |
14958 | extra_trace_bits = 1; | |
14959 | ||
14960 | /* We can stop searching. */ | |
14961 | break; | |
14962 | } | |
1042e4c0 | 14963 | } |
6149aea9 PA |
14964 | |
14965 | if (!any) | |
1042e4c0 | 14966 | { |
6149aea9 | 14967 | warning (_("Nothing to save.")); |
1042e4c0 SS |
14968 | return; |
14969 | } | |
14970 | ||
ee0c3293 | 14971 | gdb::unique_xmalloc_ptr<char> expanded_filename (tilde_expand (filename)); |
d7e74731 PA |
14972 | |
14973 | stdio_file fp; | |
14974 | ||
ee0c3293 | 14975 | if (!fp.open (expanded_filename.get (), "w")) |
6149aea9 | 14976 | error (_("Unable to open file '%s' for saving (%s)"), |
ee0c3293 | 14977 | expanded_filename.get (), safe_strerror (errno)); |
8bf6485c | 14978 | |
6149aea9 | 14979 | if (extra_trace_bits) |
d7e74731 | 14980 | save_trace_state_variables (&fp); |
8bf6485c | 14981 | |
6149aea9 | 14982 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 14983 | { |
6149aea9 | 14984 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 14985 | if (!user_breakpoint_p (tp)) |
6149aea9 | 14986 | continue; |
8bf6485c | 14987 | |
6149aea9 PA |
14988 | /* If we have a filter, only save the breakpoints it accepts. */ |
14989 | if (filter && !filter (tp)) | |
14990 | continue; | |
14991 | ||
d7e74731 | 14992 | tp->ops->print_recreate (tp, &fp); |
1042e4c0 | 14993 | |
6149aea9 PA |
14994 | /* Note, we can't rely on tp->number for anything, as we can't |
14995 | assume the recreated breakpoint numbers will match. Use $bpnum | |
14996 | instead. */ | |
14997 | ||
14998 | if (tp->cond_string) | |
d7e74731 | 14999 | fp.printf (" condition $bpnum %s\n", tp->cond_string); |
6149aea9 PA |
15000 | |
15001 | if (tp->ignore_count) | |
d7e74731 | 15002 | fp.printf (" ignore $bpnum %d\n", tp->ignore_count); |
6149aea9 | 15003 | |
2d9442cc | 15004 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15005 | { |
d7e74731 | 15006 | fp.puts (" commands\n"); |
a7bdde9e | 15007 | |
d7e74731 | 15008 | current_uiout->redirect (&fp); |
a70b8144 | 15009 | try |
1042e4c0 | 15010 | { |
d1b0a7bf | 15011 | print_command_lines (current_uiout, tp->commands.get (), 2); |
a7bdde9e | 15012 | } |
230d2906 | 15013 | catch (const gdb_exception &ex) |
492d29ea | 15014 | { |
112e8700 | 15015 | current_uiout->redirect (NULL); |
eedc3f4f | 15016 | throw; |
492d29ea | 15017 | } |
1042e4c0 | 15018 | |
112e8700 | 15019 | current_uiout->redirect (NULL); |
d7e74731 | 15020 | fp.puts (" end\n"); |
1042e4c0 | 15021 | } |
6149aea9 PA |
15022 | |
15023 | if (tp->enable_state == bp_disabled) | |
d7e74731 | 15024 | fp.puts ("disable $bpnum\n"); |
6149aea9 PA |
15025 | |
15026 | /* If this is a multi-location breakpoint, check if the locations | |
15027 | should be individually disabled. Watchpoint locations are | |
15028 | special, and not user visible. */ | |
15029 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15030 | { | |
15031 | struct bp_location *loc; | |
15032 | int n = 1; | |
15033 | ||
15034 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15035 | if (!loc->enabled) | |
d7e74731 | 15036 | fp.printf ("disable $bpnum.%d\n", n); |
6149aea9 | 15037 | } |
1042e4c0 | 15038 | } |
8bf6485c | 15039 | |
6149aea9 | 15040 | if (extra_trace_bits && *default_collect) |
d7e74731 | 15041 | fp.printf ("set default-collect %s\n", default_collect); |
8bf6485c | 15042 | |
1042e4c0 | 15043 | if (from_tty) |
ee0c3293 | 15044 | printf_filtered (_("Saved to file '%s'.\n"), expanded_filename.get ()); |
6149aea9 PA |
15045 | } |
15046 | ||
15047 | /* The `save breakpoints' command. */ | |
15048 | ||
15049 | static void | |
4495129a | 15050 | save_breakpoints_command (const char *args, int from_tty) |
6149aea9 PA |
15051 | { |
15052 | save_breakpoints (args, from_tty, NULL); | |
15053 | } | |
15054 | ||
15055 | /* The `save tracepoints' command. */ | |
15056 | ||
15057 | static void | |
4495129a | 15058 | save_tracepoints_command (const char *args, int from_tty) |
6149aea9 PA |
15059 | { |
15060 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15061 | } |
15062 | ||
15063 | /* Create a vector of all tracepoints. */ | |
15064 | ||
f51e0e20 | 15065 | std::vector<breakpoint *> |
eeae04df | 15066 | all_tracepoints (void) |
1042e4c0 | 15067 | { |
f51e0e20 | 15068 | std::vector<breakpoint *> tp_vec; |
1042e4c0 SS |
15069 | struct breakpoint *tp; |
15070 | ||
15071 | ALL_TRACEPOINTS (tp) | |
15072 | { | |
f51e0e20 | 15073 | tp_vec.push_back (tp); |
1042e4c0 SS |
15074 | } |
15075 | ||
15076 | return tp_vec; | |
15077 | } | |
15078 | ||
c906108c | 15079 | \f |
629500fa KS |
15080 | /* This help string is used to consolidate all the help string for specifying |
15081 | locations used by several commands. */ | |
15082 | ||
15083 | #define LOCATION_HELP_STRING \ | |
15084 | "Linespecs are colon-separated lists of location parameters, such as\n\ | |
15085 | source filename, function name, label name, and line number.\n\ | |
15086 | Example: To specify the start of a label named \"the_top\" in the\n\ | |
15087 | function \"fact\" in the file \"factorial.c\", use\n\ | |
15088 | \"factorial.c:fact:the_top\".\n\ | |
15089 | \n\ | |
15090 | Address locations begin with \"*\" and specify an exact address in the\n\ | |
15091 | program. Example: To specify the fourth byte past the start function\n\ | |
15092 | \"main\", use \"*main + 4\".\n\ | |
15093 | \n\ | |
15094 | Explicit locations are similar to linespecs but use an option/argument\n\ | |
15095 | syntax to specify location parameters.\n\ | |
15096 | Example: To specify the start of the label named \"the_top\" in the\n\ | |
15097 | function \"fact\" in the file \"factorial.c\", use \"-source factorial.c\n\ | |
a20714ff PA |
15098 | -function fact -label the_top\".\n\ |
15099 | \n\ | |
15100 | By default, a specified function is matched against the program's\n\ | |
15101 | functions in all scopes. For C++, this means in all namespaces and\n\ | |
15102 | classes. For Ada, this means in all packages. E.g., in C++,\n\ | |
15103 | \"func()\" matches \"A::func()\", \"A::B::func()\", etc. The\n\ | |
15104 | \"-qualified\" flag overrides this behavior, making GDB interpret the\n\ | |
89549d7f | 15105 | specified name as a complete fully-qualified name instead." |
629500fa | 15106 | |
4a64f543 MS |
15107 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15108 | commands. It is defined as a macro to prevent duplication. | |
15109 | COMMAND should be a string constant containing the name of the | |
15110 | command. */ | |
629500fa | 15111 | |
31e2b00f | 15112 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15113 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15114 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15115 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
d4777acb JM |
15116 | guessed probe type), `-probe-stap' (for a SystemTap probe) or \n\ |
15117 | `-probe-dtrace' (for a DTrace probe).\n\ | |
629500fa KS |
15118 | LOCATION may be a linespec, address, or explicit location as described\n\ |
15119 | below.\n\ | |
15120 | \n\ | |
dc10affe PA |
15121 | With no LOCATION, uses current execution address of the selected\n\ |
15122 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15123 | \n\ |
15124 | THREADNUM is the number from \"info threads\".\n\ | |
15125 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15126 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15127 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15128 | conditions are different.\n\ | |
31e2b00f AS |
15129 | \n\ |
15130 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15131 | ||
44feb3ce TT |
15132 | /* List of subcommands for "catch". */ |
15133 | static struct cmd_list_element *catch_cmdlist; | |
15134 | ||
15135 | /* List of subcommands for "tcatch". */ | |
15136 | static struct cmd_list_element *tcatch_cmdlist; | |
15137 | ||
9ac4176b | 15138 | void |
a121b7c1 | 15139 | add_catch_command (const char *name, const char *docstring, |
eb4c3f4a | 15140 | cmd_const_sfunc_ftype *sfunc, |
625e8578 | 15141 | completer_ftype *completer, |
44feb3ce TT |
15142 | void *user_data_catch, |
15143 | void *user_data_tcatch) | |
15144 | { | |
15145 | struct cmd_list_element *command; | |
15146 | ||
0450cc4c | 15147 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15148 | &catch_cmdlist); |
15149 | set_cmd_sfunc (command, sfunc); | |
15150 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15151 | set_cmd_completer (command, completer); |
44feb3ce | 15152 | |
0450cc4c | 15153 | command = add_cmd (name, class_breakpoint, docstring, |
44feb3ce TT |
15154 | &tcatch_cmdlist); |
15155 | set_cmd_sfunc (command, sfunc); | |
15156 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15157 | set_cmd_completer (command, completer); |
44feb3ce TT |
15158 | } |
15159 | ||
6149aea9 | 15160 | static void |
981a3fb3 | 15161 | save_command (const char *arg, int from_tty) |
6149aea9 | 15162 | { |
3e43a32a MS |
15163 | printf_unfiltered (_("\"save\" must be followed by " |
15164 | "the name of a save subcommand.\n")); | |
635c7e8a | 15165 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
15166 | } |
15167 | ||
84f4c1fe | 15168 | struct breakpoint * |
95da600f | 15169 | iterate_over_breakpoints (gdb::function_view<bool (breakpoint *)> callback) |
84f4c1fe | 15170 | { |
35df4500 | 15171 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15172 | |
35df4500 | 15173 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe | 15174 | { |
95da600f | 15175 | if (callback (b)) |
84f4c1fe PM |
15176 | return b; |
15177 | } | |
15178 | ||
15179 | return NULL; | |
15180 | } | |
15181 | ||
0574c78f GB |
15182 | /* Zero if any of the breakpoint's locations could be a location where |
15183 | functions have been inlined, nonzero otherwise. */ | |
15184 | ||
15185 | static int | |
15186 | is_non_inline_function (struct breakpoint *b) | |
15187 | { | |
15188 | /* The shared library event breakpoint is set on the address of a | |
15189 | non-inline function. */ | |
15190 | if (b->type == bp_shlib_event) | |
15191 | return 1; | |
15192 | ||
15193 | return 0; | |
15194 | } | |
15195 | ||
15196 | /* Nonzero if the specified PC cannot be a location where functions | |
15197 | have been inlined. */ | |
15198 | ||
15199 | int | |
accd0bcd | 15200 | pc_at_non_inline_function (const address_space *aspace, CORE_ADDR pc, |
09ac7c10 | 15201 | const struct target_waitstatus *ws) |
0574c78f GB |
15202 | { |
15203 | struct breakpoint *b; | |
15204 | struct bp_location *bl; | |
15205 | ||
15206 | ALL_BREAKPOINTS (b) | |
15207 | { | |
15208 | if (!is_non_inline_function (b)) | |
15209 | continue; | |
15210 | ||
15211 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15212 | { | |
15213 | if (!bl->shlib_disabled | |
09ac7c10 | 15214 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15215 | return 1; |
15216 | } | |
15217 | } | |
15218 | ||
15219 | return 0; | |
15220 | } | |
15221 | ||
2f202fde JK |
15222 | /* Remove any references to OBJFILE which is going to be freed. */ |
15223 | ||
15224 | void | |
15225 | breakpoint_free_objfile (struct objfile *objfile) | |
15226 | { | |
15227 | struct bp_location **locp, *loc; | |
15228 | ||
15229 | ALL_BP_LOCATIONS (loc, locp) | |
eb822aa6 | 15230 | if (loc->symtab != NULL && SYMTAB_OBJFILE (loc->symtab) == objfile) |
2f202fde JK |
15231 | loc->symtab = NULL; |
15232 | } | |
15233 | ||
2060206e PA |
15234 | void |
15235 | initialize_breakpoint_ops (void) | |
15236 | { | |
15237 | static int initialized = 0; | |
15238 | ||
15239 | struct breakpoint_ops *ops; | |
15240 | ||
15241 | if (initialized) | |
15242 | return; | |
15243 | initialized = 1; | |
15244 | ||
15245 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15246 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15247 | internal and momentary breakpoints, etc.). */ | |
15248 | ops = &bkpt_base_breakpoint_ops; | |
15249 | *ops = base_breakpoint_ops; | |
15250 | ops->re_set = bkpt_re_set; | |
15251 | ops->insert_location = bkpt_insert_location; | |
15252 | ops->remove_location = bkpt_remove_location; | |
15253 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
5f700d83 | 15254 | ops->create_sals_from_location = bkpt_create_sals_from_location; |
983af33b | 15255 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; |
5f700d83 | 15256 | ops->decode_location = bkpt_decode_location; |
2060206e PA |
15257 | |
15258 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15259 | ops = &bkpt_breakpoint_ops; | |
15260 | *ops = bkpt_base_breakpoint_ops; | |
15261 | ops->re_set = bkpt_re_set; | |
15262 | ops->resources_needed = bkpt_resources_needed; | |
15263 | ops->print_it = bkpt_print_it; | |
15264 | ops->print_mention = bkpt_print_mention; | |
15265 | ops->print_recreate = bkpt_print_recreate; | |
15266 | ||
15267 | /* Ranged breakpoints. */ | |
15268 | ops = &ranged_breakpoint_ops; | |
15269 | *ops = bkpt_breakpoint_ops; | |
15270 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15271 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15272 | ops->print_it = print_it_ranged_breakpoint; | |
15273 | ops->print_one = print_one_ranged_breakpoint; | |
15274 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15275 | ops->print_mention = print_mention_ranged_breakpoint; | |
15276 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15277 | ||
15278 | /* Internal breakpoints. */ | |
15279 | ops = &internal_breakpoint_ops; | |
15280 | *ops = bkpt_base_breakpoint_ops; | |
15281 | ops->re_set = internal_bkpt_re_set; | |
15282 | ops->check_status = internal_bkpt_check_status; | |
15283 | ops->print_it = internal_bkpt_print_it; | |
15284 | ops->print_mention = internal_bkpt_print_mention; | |
15285 | ||
15286 | /* Momentary breakpoints. */ | |
15287 | ops = &momentary_breakpoint_ops; | |
15288 | *ops = bkpt_base_breakpoint_ops; | |
15289 | ops->re_set = momentary_bkpt_re_set; | |
15290 | ops->check_status = momentary_bkpt_check_status; | |
15291 | ops->print_it = momentary_bkpt_print_it; | |
15292 | ops->print_mention = momentary_bkpt_print_mention; | |
15293 | ||
55aa24fb SDJ |
15294 | /* Probe breakpoints. */ |
15295 | ops = &bkpt_probe_breakpoint_ops; | |
15296 | *ops = bkpt_breakpoint_ops; | |
15297 | ops->insert_location = bkpt_probe_insert_location; | |
15298 | ops->remove_location = bkpt_probe_remove_location; | |
5f700d83 KS |
15299 | ops->create_sals_from_location = bkpt_probe_create_sals_from_location; |
15300 | ops->decode_location = bkpt_probe_decode_location; | |
55aa24fb | 15301 | |
2060206e PA |
15302 | /* Watchpoints. */ |
15303 | ops = &watchpoint_breakpoint_ops; | |
15304 | *ops = base_breakpoint_ops; | |
15305 | ops->re_set = re_set_watchpoint; | |
15306 | ops->insert_location = insert_watchpoint; | |
15307 | ops->remove_location = remove_watchpoint; | |
15308 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15309 | ops->check_status = check_status_watchpoint; | |
15310 | ops->resources_needed = resources_needed_watchpoint; | |
15311 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15312 | ops->print_it = print_it_watchpoint; | |
15313 | ops->print_mention = print_mention_watchpoint; | |
15314 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15315 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15316 | |
15317 | /* Masked watchpoints. */ | |
15318 | ops = &masked_watchpoint_breakpoint_ops; | |
15319 | *ops = watchpoint_breakpoint_ops; | |
15320 | ops->insert_location = insert_masked_watchpoint; | |
15321 | ops->remove_location = remove_masked_watchpoint; | |
15322 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15323 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15324 | ops->print_it = print_it_masked_watchpoint; | |
15325 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15326 | ops->print_mention = print_mention_masked_watchpoint; | |
15327 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15328 | ||
15329 | /* Tracepoints. */ | |
15330 | ops = &tracepoint_breakpoint_ops; | |
15331 | *ops = base_breakpoint_ops; | |
15332 | ops->re_set = tracepoint_re_set; | |
15333 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15334 | ops->print_one_detail = tracepoint_print_one_detail; | |
15335 | ops->print_mention = tracepoint_print_mention; | |
15336 | ops->print_recreate = tracepoint_print_recreate; | |
5f700d83 | 15337 | ops->create_sals_from_location = tracepoint_create_sals_from_location; |
983af33b | 15338 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; |
5f700d83 | 15339 | ops->decode_location = tracepoint_decode_location; |
983af33b | 15340 | |
55aa24fb SDJ |
15341 | /* Probe tracepoints. */ |
15342 | ops = &tracepoint_probe_breakpoint_ops; | |
15343 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 KS |
15344 | ops->create_sals_from_location = tracepoint_probe_create_sals_from_location; |
15345 | ops->decode_location = tracepoint_probe_decode_location; | |
55aa24fb | 15346 | |
983af33b SDJ |
15347 | /* Static tracepoints with marker (`-m'). */ |
15348 | ops = &strace_marker_breakpoint_ops; | |
15349 | *ops = tracepoint_breakpoint_ops; | |
5f700d83 | 15350 | ops->create_sals_from_location = strace_marker_create_sals_from_location; |
983af33b | 15351 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; |
5f700d83 | 15352 | ops->decode_location = strace_marker_decode_location; |
2060206e PA |
15353 | |
15354 | /* Fork catchpoints. */ | |
15355 | ops = &catch_fork_breakpoint_ops; | |
15356 | *ops = base_breakpoint_ops; | |
15357 | ops->insert_location = insert_catch_fork; | |
15358 | ops->remove_location = remove_catch_fork; | |
15359 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15360 | ops->print_it = print_it_catch_fork; | |
15361 | ops->print_one = print_one_catch_fork; | |
15362 | ops->print_mention = print_mention_catch_fork; | |
15363 | ops->print_recreate = print_recreate_catch_fork; | |
15364 | ||
15365 | /* Vfork catchpoints. */ | |
15366 | ops = &catch_vfork_breakpoint_ops; | |
15367 | *ops = base_breakpoint_ops; | |
15368 | ops->insert_location = insert_catch_vfork; | |
15369 | ops->remove_location = remove_catch_vfork; | |
15370 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15371 | ops->print_it = print_it_catch_vfork; | |
15372 | ops->print_one = print_one_catch_vfork; | |
15373 | ops->print_mention = print_mention_catch_vfork; | |
15374 | ops->print_recreate = print_recreate_catch_vfork; | |
15375 | ||
15376 | /* Exec catchpoints. */ | |
15377 | ops = &catch_exec_breakpoint_ops; | |
15378 | *ops = base_breakpoint_ops; | |
2060206e PA |
15379 | ops->insert_location = insert_catch_exec; |
15380 | ops->remove_location = remove_catch_exec; | |
15381 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15382 | ops->print_it = print_it_catch_exec; | |
15383 | ops->print_one = print_one_catch_exec; | |
15384 | ops->print_mention = print_mention_catch_exec; | |
15385 | ops->print_recreate = print_recreate_catch_exec; | |
15386 | ||
edcc5120 TT |
15387 | /* Solib-related catchpoints. */ |
15388 | ops = &catch_solib_breakpoint_ops; | |
15389 | *ops = base_breakpoint_ops; | |
edcc5120 TT |
15390 | ops->insert_location = insert_catch_solib; |
15391 | ops->remove_location = remove_catch_solib; | |
15392 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15393 | ops->check_status = check_status_catch_solib; | |
15394 | ops->print_it = print_it_catch_solib; | |
15395 | ops->print_one = print_one_catch_solib; | |
15396 | ops->print_mention = print_mention_catch_solib; | |
15397 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15398 | |
15399 | ops = &dprintf_breakpoint_ops; | |
15400 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15401 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15402 | ops->resources_needed = bkpt_resources_needed; |
15403 | ops->print_it = bkpt_print_it; | |
15404 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15405 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 15406 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 15407 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
15408 | } |
15409 | ||
8bfd80db YQ |
15410 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15411 | ||
15412 | static struct cmd_list_element *enablebreaklist = NULL; | |
15413 | ||
8588b356 SM |
15414 | /* See breakpoint.h. */ |
15415 | ||
15416 | cmd_list_element *commands_cmd_element = nullptr; | |
15417 | ||
c906108c | 15418 | void |
fba45db2 | 15419 | _initialize_breakpoint (void) |
c906108c SS |
15420 | { |
15421 | struct cmd_list_element *c; | |
15422 | ||
2060206e PA |
15423 | initialize_breakpoint_ops (); |
15424 | ||
76727919 TT |
15425 | gdb::observers::solib_unloaded.attach (disable_breakpoints_in_unloaded_shlib); |
15426 | gdb::observers::free_objfile.attach (disable_breakpoints_in_freed_objfile); | |
15427 | gdb::observers::memory_changed.attach (invalidate_bp_value_on_memory_change); | |
84acb35a | 15428 | |
c906108c SS |
15429 | breakpoint_chain = 0; |
15430 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15431 | before a breakpoint is set. */ | |
15432 | breakpoint_count = 0; | |
15433 | ||
1042e4c0 SS |
15434 | tracepoint_count = 0; |
15435 | ||
1bedd215 AC |
15436 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15437 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15438 | Usage is `ignore N COUNT'.")); | |
c906108c | 15439 | |
8588b356 SM |
15440 | commands_cmd_element = add_com ("commands", class_breakpoint, |
15441 | commands_command, _("\ | |
18da0c51 MG |
15442 | Set commands to be executed when the given breakpoints are hit.\n\ |
15443 | Give a space-separated breakpoint list as argument after \"commands\".\n\ | |
15444 | A list element can be a breakpoint number (e.g. `5') or a range of numbers\n\ | |
15445 | (e.g. `5-7').\n\ | |
c906108c SS |
15446 | With no argument, the targeted breakpoint is the last one set.\n\ |
15447 | The commands themselves follow starting on the next line.\n\ | |
15448 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15449 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15450 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15451 | |
d55637df | 15452 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15453 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15454 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15455 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15456 | set_cmd_completer (c, condition_completer); |
c906108c | 15457 | |
1bedd215 | 15458 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15459 | Set a temporary breakpoint.\n\ |
c906108c SS |
15460 | Like \"break\" except the breakpoint is only temporary,\n\ |
15461 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15462 | by using \"enable delete\" on the breakpoint number.\n\ |
15463 | \n" | |
15464 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15465 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15466 | |
1bedd215 | 15467 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15468 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15469 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15470 | some target hardware may not have this support.\n\ |
15471 | \n" | |
15472 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15473 | set_cmd_completer (c, location_completer); |
c906108c | 15474 | |
1bedd215 | 15475 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15476 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15477 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15478 | so it will be deleted when hit.\n\ |
15479 | \n" | |
15480 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15481 | set_cmd_completer (c, location_completer); |
c906108c | 15482 | |
1bedd215 | 15483 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
590042fc PW |
15484 | Enable all or some breakpoints.\n\ |
15485 | Usage: enable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15486 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15487 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15488 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15489 | With a subcommand you can enable temporarily."), |
c906108c | 15490 | &enablelist, "enable ", 1, &cmdlist); |
c906108c SS |
15491 | |
15492 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15493 | ||
84951ab5 | 15494 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
590042fc PW |
15495 | Enable all or some breakpoints.\n\ |
15496 | Usage: enable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15497 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15498 | This is used to cancel the effect of the \"disable\" command.\n\ | |
89549d7f | 15499 | May be abbreviated to simply \"enable\"."), |
c5aa993b | 15500 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15501 | |
1a966eab | 15502 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15503 | Enable some breakpoints for one hit.\n\ |
15504 | Usage: enable breakpoints once BREAKPOINTNUM...\n\ | |
1a966eab | 15505 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
c906108c SS |
15506 | &enablebreaklist); |
15507 | ||
1a966eab | 15508 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15509 | Enable some breakpoints and delete when hit.\n\ |
15510 | Usage: enable breakpoints delete BREAKPOINTNUM...\n\ | |
1a966eab | 15511 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15512 | &enablebreaklist); |
15513 | ||
816338b5 | 15514 | add_cmd ("count", no_class, enable_count_command, _("\ |
590042fc PW |
15515 | Enable some breakpoints for COUNT hits.\n\ |
15516 | Usage: enable breakpoints count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15517 | If a breakpoint is hit while enabled in this fashion,\n\ |
15518 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15519 | &enablebreaklist); | |
15520 | ||
1a966eab | 15521 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
590042fc PW |
15522 | Enable some breakpoints and delete when hit.\n\ |
15523 | Usage: enable delete BREAKPOINTNUM...\n\ | |
1a966eab | 15524 | If a breakpoint is hit while enabled in this fashion, it is deleted."), |
c906108c SS |
15525 | &enablelist); |
15526 | ||
1a966eab | 15527 | add_cmd ("once", no_class, enable_once_command, _("\ |
590042fc PW |
15528 | Enable some breakpoints for one hit.\n\ |
15529 | Usage: enable once BREAKPOINTNUM...\n\ | |
1a966eab | 15530 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), |
816338b5 SS |
15531 | &enablelist); |
15532 | ||
15533 | add_cmd ("count", no_class, enable_count_command, _("\ | |
590042fc PW |
15534 | Enable some breakpoints for COUNT hits.\n\ |
15535 | Usage: enable count COUNT BREAKPOINTNUM...\n\ | |
816338b5 SS |
15536 | If a breakpoint is hit while enabled in this fashion,\n\ |
15537 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15538 | &enablelist); |
15539 | ||
1bedd215 | 15540 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
590042fc PW |
15541 | Disable all or some breakpoints.\n\ |
15542 | Usage: disable [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15543 | Arguments are breakpoint numbers with spaces in between.\n\ |
15544 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15545 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15546 | &disablelist, "disable ", 1, &cmdlist); |
15547 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15548 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
c906108c | 15549 | |
1a966eab | 15550 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
590042fc PW |
15551 | Disable all or some breakpoints.\n\ |
15552 | Usage: disable breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15553 | Arguments are breakpoint numbers with spaces in between.\n\ |
15554 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15555 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15556 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15557 | &disablelist); |
15558 | ||
1bedd215 | 15559 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
590042fc PW |
15560 | Delete all or some breakpoints.\n\ |
15561 | Usage: delete [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15562 | Arguments are breakpoint numbers with spaces in between.\n\ |
15563 | To delete all breakpoints, give no argument.\n\ | |
15564 | \n\ | |
590042fc | 15565 | Also a prefix command for deletion of other GDB objects."), |
c906108c SS |
15566 | &deletelist, "delete ", 1, &cmdlist); |
15567 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15568 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15569 | |
1a966eab | 15570 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
590042fc PW |
15571 | Delete all or some breakpoints or auto-display expressions.\n\ |
15572 | Usage: delete breakpoints [BREAKPOINTNUM]...\n\ | |
c906108c SS |
15573 | Arguments are breakpoint numbers with spaces in between.\n\ |
15574 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15575 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15576 | &deletelist); |
15577 | ||
1bedd215 | 15578 | add_com ("clear", class_breakpoint, clear_command, _("\ |
629500fa KS |
15579 | Clear breakpoint at specified location.\n\ |
15580 | Argument may be a linespec, explicit, or address location as described below.\n\ | |
1bedd215 AC |
15581 | \n\ |
15582 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
629500fa | 15583 | is executing in.\n" |
89549d7f | 15584 | "\n" LOCATION_HELP_STRING "\n\n\ |
1bedd215 | 15585 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15586 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15587 | |
1bedd215 | 15588 | c = add_com ("break", class_breakpoint, break_command, _("\ |
629500fa | 15589 | Set breakpoint at specified location.\n" |
31e2b00f | 15590 | BREAK_ARGS_HELP ("break"))); |
5ba2abeb | 15591 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15592 | |
c906108c SS |
15593 | add_com_alias ("b", "break", class_run, 1); |
15594 | add_com_alias ("br", "break", class_run, 1); | |
15595 | add_com_alias ("bre", "break", class_run, 1); | |
15596 | add_com_alias ("brea", "break", class_run, 1); | |
15597 | ||
c906108c SS |
15598 | if (dbx_commands) |
15599 | { | |
1bedd215 AC |
15600 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15601 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15602 | &stoplist, "stop ", 1, &cmdlist); |
15603 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15604 | _("Break in function or address."), &stoplist); |
c5aa993b | 15605 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15606 | _("Break at a line in the current file."), &stoplist); |
11db9430 | 15607 | add_com ("status", class_info, info_breakpoints_command, _("\ |
1bedd215 | 15608 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ |
c906108c SS |
15609 | The \"Type\" column indicates one of:\n\ |
15610 | \tbreakpoint - normal breakpoint\n\ | |
15611 | \twatchpoint - watchpoint\n\ | |
15612 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15613 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15614 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15615 | address and file/line number respectively.\n\ |
15616 | \n\ | |
15617 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15618 | are set to the address of the last breakpoint listed unless the command\n\ |
15619 | is prefixed with \"server \".\n\n\ | |
c906108c | 15620 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15621 | breakpoint set.")); |
c906108c SS |
15622 | } |
15623 | ||
11db9430 | 15624 | add_info ("breakpoints", info_breakpoints_command, _("\ |
e5a67952 | 15625 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15626 | The \"Type\" column indicates one of:\n\ |
15627 | \tbreakpoint - normal breakpoint\n\ | |
15628 | \twatchpoint - watchpoint\n\ | |
15629 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15630 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15631 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15632 | address and file/line number respectively.\n\ |
15633 | \n\ | |
15634 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15635 | are set to the address of the last breakpoint listed unless the command\n\ |
15636 | is prefixed with \"server \".\n\n\ | |
c906108c | 15637 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15638 | breakpoint set.")); |
c906108c | 15639 | |
6b04bdb7 MS |
15640 | add_info_alias ("b", "breakpoints", 1); |
15641 | ||
1a966eab AC |
15642 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15643 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15644 | The \"Type\" column indicates one of:\n\ |
15645 | \tbreakpoint - normal breakpoint\n\ | |
15646 | \twatchpoint - watchpoint\n\ | |
15647 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15648 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15649 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15650 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15651 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15652 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15653 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15654 | address and file/line number respectively.\n\ |
15655 | \n\ | |
15656 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15657 | are set to the address of the last breakpoint listed unless the command\n\ |
15658 | is prefixed with \"server \".\n\n\ | |
c906108c | 15659 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15660 | breakpoint set."), |
c906108c SS |
15661 | &maintenanceinfolist); |
15662 | ||
44feb3ce TT |
15663 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15664 | Set catchpoints to catch events."), | |
15665 | &catch_cmdlist, "catch ", | |
15666 | 0/*allow-unknown*/, &cmdlist); | |
15667 | ||
15668 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15669 | Set temporary catchpoints to catch events."), | |
15670 | &tcatch_cmdlist, "tcatch ", | |
15671 | 0/*allow-unknown*/, &cmdlist); | |
15672 | ||
44feb3ce TT |
15673 | add_catch_command ("fork", _("Catch calls to fork."), |
15674 | catch_fork_command_1, | |
a96d9b2e | 15675 | NULL, |
44feb3ce TT |
15676 | (void *) (uintptr_t) catch_fork_permanent, |
15677 | (void *) (uintptr_t) catch_fork_temporary); | |
15678 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15679 | catch_fork_command_1, | |
a96d9b2e | 15680 | NULL, |
44feb3ce TT |
15681 | (void *) (uintptr_t) catch_vfork_permanent, |
15682 | (void *) (uintptr_t) catch_vfork_temporary); | |
15683 | add_catch_command ("exec", _("Catch calls to exec."), | |
15684 | catch_exec_command_1, | |
a96d9b2e SDJ |
15685 | NULL, |
15686 | CATCH_PERMANENT, | |
15687 | CATCH_TEMPORARY); | |
edcc5120 TT |
15688 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15689 | Usage: catch load [REGEX]\n\ | |
15690 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15691 | catch_load_command_1, | |
15692 | NULL, | |
15693 | CATCH_PERMANENT, | |
15694 | CATCH_TEMPORARY); | |
15695 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15696 | Usage: catch unload [REGEX]\n\ | |
15697 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15698 | catch_unload_command_1, | |
15699 | NULL, | |
15700 | CATCH_PERMANENT, | |
15701 | CATCH_TEMPORARY); | |
c5aa993b | 15702 | |
1bedd215 AC |
15703 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15704 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15705 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15706 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15707 | an expression changes.\n\ |
15708 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15709 | the memory to which it refers.")); | |
65d12d83 | 15710 | set_cmd_completer (c, expression_completer); |
c906108c | 15711 | |
1bedd215 AC |
15712 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15713 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15714 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15715 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15716 | an expression is read.\n\ |
15717 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15718 | the memory to which it refers.")); | |
65d12d83 | 15719 | set_cmd_completer (c, expression_completer); |
c906108c | 15720 | |
1bedd215 AC |
15721 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15722 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15723 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15724 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15725 | an expression is either read or written.\n\ |
15726 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15727 | the memory to which it refers.")); | |
65d12d83 | 15728 | set_cmd_completer (c, expression_completer); |
c906108c | 15729 | |
11db9430 | 15730 | add_info ("watchpoints", info_watchpoints_command, _("\ |
e5a67952 | 15731 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15732 | |
920d2a44 AC |
15733 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15734 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15735 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15736 | &can_use_hw_watchpoints, _("\ | |
15737 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15738 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15739 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15740 | such is available. (However, any hardware watchpoints that were\n\ | |
15741 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15742 | hardware.)"), |
15743 | NULL, | |
920d2a44 | 15744 | show_can_use_hw_watchpoints, |
85c07804 | 15745 | &setlist, &showlist); |
c906108c SS |
15746 | |
15747 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15748 | |
1042e4c0 SS |
15749 | /* Tracepoint manipulation commands. */ |
15750 | ||
15751 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
629500fa | 15752 | Set a tracepoint at specified location.\n\ |
1042e4c0 SS |
15753 | \n" |
15754 | BREAK_ARGS_HELP ("trace") "\n\ | |
15755 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15756 | set_cmd_completer (c, location_completer); | |
15757 | ||
15758 | add_com_alias ("tp", "trace", class_alias, 0); | |
15759 | add_com_alias ("tr", "trace", class_alias, 1); | |
15760 | add_com_alias ("tra", "trace", class_alias, 1); | |
15761 | add_com_alias ("trac", "trace", class_alias, 1); | |
15762 | ||
7a697b8d | 15763 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
629500fa | 15764 | Set a fast tracepoint at specified location.\n\ |
7a697b8d SS |
15765 | \n" |
15766 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15767 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15768 | set_cmd_completer (c, location_completer); | |
15769 | ||
0fb4aa4b | 15770 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
629500fa | 15771 | Set a static tracepoint at location or marker.\n\ |
0fb4aa4b PA |
15772 | \n\ |
15773 | strace [LOCATION] [if CONDITION]\n\ | |
629500fa KS |
15774 | LOCATION may be a linespec, explicit, or address location (described below) \n\ |
15775 | or -m MARKER_ID.\n\n\ | |
15776 | If a marker id is specified, probe the marker with that name. With\n\ | |
15777 | no LOCATION, uses current execution address of the selected stack frame.\n\ | |
0fb4aa4b PA |
15778 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ |
15779 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15780 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15781 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15782 | \n\ | |
15783 | CONDITION is a boolean expression.\n\ | |
89549d7f | 15784 | \n" LOCATION_HELP_STRING "\n\n\ |
d41c0fc8 PA |
15785 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15786 | conditions are different.\n\ | |
0fb4aa4b PA |
15787 | \n\ |
15788 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15789 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15790 | set_cmd_completer (c, location_completer); | |
15791 | ||
11db9430 | 15792 | add_info ("tracepoints", info_tracepoints_command, _("\ |
e5a67952 | 15793 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15794 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15795 | last tracepoint set.")); | |
15796 | ||
15797 | add_info_alias ("tp", "tracepoints", 1); | |
15798 | ||
15799 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15800 | Delete specified tracepoints.\n\ | |
15801 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15802 | No argument means delete all tracepoints."), | |
15803 | &deletelist); | |
7e20dfcd | 15804 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
15805 | |
15806 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15807 | Disable specified tracepoints.\n\ | |
15808 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15809 | No argument means disable all tracepoints."), | |
15810 | &disablelist); | |
15811 | deprecate_cmd (c, "disable"); | |
15812 | ||
15813 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15814 | Enable specified tracepoints.\n\ | |
15815 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15816 | No argument means enable all tracepoints."), | |
15817 | &enablelist); | |
15818 | deprecate_cmd (c, "enable"); | |
15819 | ||
15820 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15821 | Set the passcount for a tracepoint.\n\ | |
15822 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15823 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15824 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15825 | ||
6149aea9 PA |
15826 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15827 | _("Save breakpoint definitions as a script."), | |
15828 | &save_cmdlist, "save ", | |
15829 | 0/*allow-unknown*/, &cmdlist); | |
15830 | ||
15831 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15832 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15833 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15834 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15835 | session to restore them."), | |
15836 | &save_cmdlist); | |
15837 | set_cmd_completer (c, filename_completer); | |
15838 | ||
15839 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15840 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15841 | Use the 'source' command in another debug session to restore them."), |
15842 | &save_cmdlist); | |
1042e4c0 SS |
15843 | set_cmd_completer (c, filename_completer); |
15844 | ||
6149aea9 PA |
15845 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15846 | deprecate_cmd (c, "save tracepoints"); | |
15847 | ||
1bedd215 | 15848 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
590042fc | 15849 | Breakpoint specific settings.\n\ |
fa8d40ab | 15850 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15851 | pending breakpoint behavior."), |
fa8d40ab JJ |
15852 | &breakpoint_set_cmdlist, "set breakpoint ", |
15853 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15854 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
590042fc | 15855 | Breakpoint specific settings.\n\ |
fa8d40ab | 15856 | Configure various breakpoint-specific variables such as\n\ |
590042fc | 15857 | pending breakpoint behavior."), |
fa8d40ab JJ |
15858 | &breakpoint_show_cmdlist, "show breakpoint ", |
15859 | 0/*allow-unknown*/, &showlist); | |
15860 | ||
7915a72c AC |
15861 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15862 | &pending_break_support, _("\ | |
15863 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15864 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15865 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15866 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15867 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15868 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15869 | NULL, |
920d2a44 | 15870 | show_pending_break_support, |
6e1d7d6c AC |
15871 | &breakpoint_set_cmdlist, |
15872 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15873 | |
15874 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15875 | |
15876 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
15877 | &automatic_hardware_breakpoints, _("\ | |
15878 | Set automatic usage of hardware breakpoints."), _("\ | |
15879 | Show automatic usage of hardware breakpoints."), _("\ | |
15880 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
15881 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
15882 | a warning will be emitted for such breakpoints."), | |
15883 | NULL, | |
15884 | show_automatic_hardware_breakpoints, | |
15885 | &breakpoint_set_cmdlist, | |
15886 | &breakpoint_show_cmdlist); | |
74960c60 | 15887 | |
a25a5a45 PA |
15888 | add_setshow_boolean_cmd ("always-inserted", class_support, |
15889 | &always_inserted_mode, _("\ | |
74960c60 VP |
15890 | Set mode for inserting breakpoints."), _("\ |
15891 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
15892 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
15893 | they're created, kept inserted even when execution stops, and removed\n\ | |
15894 | only when the user deletes them. When this mode is off (the default),\n\ | |
15895 | breakpoints are inserted only when execution continues, and removed\n\ | |
15896 | when execution stops."), | |
72d0e2c5 YQ |
15897 | NULL, |
15898 | &show_always_inserted_mode, | |
15899 | &breakpoint_set_cmdlist, | |
15900 | &breakpoint_show_cmdlist); | |
f1310107 | 15901 | |
b775012e LM |
15902 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
15903 | condition_evaluation_enums, | |
15904 | &condition_evaluation_mode_1, _("\ | |
15905 | Set mode of breakpoint condition evaluation."), _("\ | |
15906 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 15907 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
15908 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
15909 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
15910 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
15911 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
15912 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
15913 | be set to \"gdb\""), | |
15914 | &set_condition_evaluation_mode, | |
15915 | &show_condition_evaluation_mode, | |
15916 | &breakpoint_set_cmdlist, | |
15917 | &breakpoint_show_cmdlist); | |
15918 | ||
f1310107 TJB |
15919 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
15920 | Set a breakpoint for an address range.\n\ | |
15921 | break-range START-LOCATION, END-LOCATION\n\ | |
15922 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
15923 | LINENUM, for that line in the current file,\n\ | |
15924 | FILE:LINENUM, for that line in that file,\n\ | |
15925 | +OFFSET, for that number of lines after the current line\n\ | |
15926 | or the start of the range\n\ | |
15927 | FUNCTION, for the first line in that function,\n\ | |
15928 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
15929 | *ADDRESS, for the instruction at that address.\n\ | |
15930 | \n\ | |
15931 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
15932 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
15933 | range (including START-LOCATION and END-LOCATION).")); | |
15934 | ||
e7e0cddf | 15935 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
629500fa | 15936 | Set a dynamic printf at specified location.\n\ |
e7e0cddf | 15937 | dprintf location,format string,arg1,arg2,...\n\ |
629500fa KS |
15938 | location may be a linespec, explicit, or address location.\n" |
15939 | "\n" LOCATION_HELP_STRING)); | |
e7e0cddf SS |
15940 | set_cmd_completer (c, location_completer); |
15941 | ||
15942 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
15943 | dprintf_style_enums, &dprintf_style, _("\ | |
15944 | Set the style of usage for dynamic printf."), _("\ | |
15945 | Show the style of usage for dynamic printf."), _("\ | |
15946 | This setting chooses how GDB will do a dynamic printf.\n\ | |
15947 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
15948 | console, as with the \"printf\" command.\n\ | |
15949 | If the value is \"call\", the print is done by calling a function in your\n\ | |
15950 | program; by default printf(), but you can choose a different function or\n\ | |
15951 | output stream by setting dprintf-function and dprintf-channel."), | |
15952 | update_dprintf_commands, NULL, | |
15953 | &setlist, &showlist); | |
15954 | ||
15955 | dprintf_function = xstrdup ("printf"); | |
15956 | add_setshow_string_cmd ("dprintf-function", class_support, | |
15957 | &dprintf_function, _("\ | |
590042fc PW |
15958 | Set the function to use for dynamic printf."), _("\ |
15959 | Show the function to use for dynamic printf."), NULL, | |
e7e0cddf SS |
15960 | update_dprintf_commands, NULL, |
15961 | &setlist, &showlist); | |
15962 | ||
15963 | dprintf_channel = xstrdup (""); | |
15964 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
15965 | &dprintf_channel, _("\ | |
590042fc PW |
15966 | Set the channel to use for dynamic printf."), _("\ |
15967 | Show the channel to use for dynamic printf."), NULL, | |
e7e0cddf SS |
15968 | update_dprintf_commands, NULL, |
15969 | &setlist, &showlist); | |
15970 | ||
d3ce09f5 SS |
15971 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
15972 | &disconnected_dprintf, _("\ | |
15973 | Set whether dprintf continues after GDB disconnects."), _("\ | |
15974 | Show whether dprintf continues after GDB disconnects."), _("\ | |
15975 | Use this to let dprintf commands continue to hit and produce output\n\ | |
15976 | even if GDB disconnects or detaches from the target."), | |
15977 | NULL, | |
15978 | NULL, | |
15979 | &setlist, &showlist); | |
15980 | ||
15981 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
590042fc PW |
15982 | Target agent only formatted printing, like the C \"printf\" function.\n\ |
15983 | Usage: agent-printf \"format string\", ARG1, ARG2, ARG3, ..., ARGN\n\ | |
15984 | This supports most C printf format specifications, like %s, %d, etc.\n\ | |
15985 | This is useful for formatted output in user-defined commands.")); | |
d3ce09f5 | 15986 | |
491144b5 | 15987 | automatic_hardware_breakpoints = true; |
f3b1572e | 15988 | |
76727919 TT |
15989 | gdb::observers::about_to_proceed.attach (breakpoint_about_to_proceed); |
15990 | gdb::observers::thread_exit.attach (remove_threaded_breakpoints); | |
c906108c | 15991 | } |