Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1986-2012 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
a6d9a66e | 21 | #include "arch-utils.h" |
c906108c | 22 | #include <ctype.h> |
776592bf | 23 | #include "hashtab.h" |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
1042e4c0 | 27 | #include "tracepoint.h" |
c906108c SS |
28 | #include "gdbtypes.h" |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
38 | #include "gdb_string.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
0ba1096a | 40 | #include "filenames.h" |
c906108c SS |
41 | #include "annotate.h" |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
a77053c2 | 52 | #include "solib.h" |
84acb35a JJ |
53 | #include "solist.h" |
54 | #include "observer.h" | |
60250e8b | 55 | #include "exceptions.h" |
765dc015 | 56 | #include "memattr.h" |
f7f9143b | 57 | #include "ada-lang.h" |
d1aa2f50 | 58 | #include "top.h" |
79a45b7d | 59 | #include "valprint.h" |
4efc6507 | 60 | #include "jit.h" |
a96d9b2e | 61 | #include "xml-syscall.h" |
65d79d4b | 62 | #include "parser-defs.h" |
55aa24fb SDJ |
63 | #include "gdb_regex.h" |
64 | #include "probe.h" | |
e9cafbcc | 65 | #include "cli/cli-utils.h" |
be34f849 | 66 | #include "continuations.h" |
1bfeeb0f JL |
67 | #include "stack.h" |
68 | #include "skip.h" | |
edcc5120 | 69 | #include "gdb_regex.h" |
b775012e | 70 | #include "ax-gdb.h" |
e2e4d78b | 71 | #include "dummy-frame.h" |
c906108c | 72 | |
1042e4c0 SS |
73 | /* readline include files */ |
74 | #include "readline/readline.h" | |
75 | #include "readline/history.h" | |
76 | ||
77 | /* readline defines this. */ | |
78 | #undef savestring | |
79 | ||
034dad6f | 80 | #include "mi/mi-common.h" |
7371cf6d | 81 | #include "python/python.h" |
104c1213 | 82 | |
4a64f543 | 83 | /* Prototypes for local functions. */ |
c906108c | 84 | |
a14ed312 | 85 | static void enable_delete_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void enable_once_command (char *, int); |
c906108c | 88 | |
816338b5 SS |
89 | static void enable_count_command (char *, int); |
90 | ||
a14ed312 | 91 | static void disable_command (char *, int); |
c906108c | 92 | |
a14ed312 | 93 | static void enable_command (char *, int); |
c906108c | 94 | |
95a42b64 TT |
95 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
96 | void *), | |
97 | void *); | |
c906108c | 98 | |
a14ed312 | 99 | static void ignore_command (char *, int); |
c906108c | 100 | |
4efb68b1 | 101 | static int breakpoint_re_set_one (void *); |
c906108c | 102 | |
348d480f PA |
103 | static void breakpoint_re_set_default (struct breakpoint *); |
104 | ||
983af33b SDJ |
105 | static void create_sals_from_address_default (char **, |
106 | struct linespec_result *, | |
107 | enum bptype, char *, | |
108 | char **); | |
109 | ||
110 | static void create_breakpoints_sal_default (struct gdbarch *, | |
111 | struct linespec_result *, | |
112 | struct linespec_sals *, | |
e7e0cddf | 113 | char *, char *, enum bptype, |
983af33b SDJ |
114 | enum bpdisp, int, int, |
115 | int, | |
116 | const struct breakpoint_ops *, | |
44f238bb | 117 | int, int, int, unsigned); |
983af33b SDJ |
118 | |
119 | static void decode_linespec_default (struct breakpoint *, char **, | |
120 | struct symtabs_and_lines *); | |
121 | ||
a14ed312 | 122 | static void clear_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static void catch_command (char *, int); |
c906108c | 125 | |
a9634178 | 126 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 127 | |
98deb0da | 128 | static void break_command_1 (char *, int, int); |
c906108c | 129 | |
a14ed312 | 130 | static void mention (struct breakpoint *); |
c906108c | 131 | |
348d480f PA |
132 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
133 | enum bptype, | |
c0a91b2b | 134 | const struct breakpoint_ops *); |
3742cc8b YQ |
135 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
136 | const struct symtab_and_line *); | |
137 | ||
4a64f543 MS |
138 | /* This function is used in gdbtk sources and thus can not be made |
139 | static. */ | |
63c252f8 | 140 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 141 | struct symtab_and_line, |
c0a91b2b TT |
142 | enum bptype, |
143 | const struct breakpoint_ops *); | |
c906108c | 144 | |
06edf0c0 PA |
145 | static struct breakpoint * |
146 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
147 | enum bptype type, | |
c0a91b2b | 148 | const struct breakpoint_ops *ops); |
06edf0c0 | 149 | |
76897487 KB |
150 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
151 | ||
a6d9a66e UW |
152 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
153 | CORE_ADDR bpaddr, | |
88f7da05 | 154 | enum bptype bptype); |
76897487 | 155 | |
6c95b8df PA |
156 | static void describe_other_breakpoints (struct gdbarch *, |
157 | struct program_space *, CORE_ADDR, | |
5af949e3 | 158 | struct obj_section *, int); |
c906108c | 159 | |
6c95b8df PA |
160 | static int breakpoint_address_match (struct address_space *aspace1, |
161 | CORE_ADDR addr1, | |
162 | struct address_space *aspace2, | |
163 | CORE_ADDR addr2); | |
164 | ||
85d721b8 PA |
165 | static int watchpoint_locations_match (struct bp_location *loc1, |
166 | struct bp_location *loc2); | |
167 | ||
f1310107 TJB |
168 | static int breakpoint_location_address_match (struct bp_location *bl, |
169 | struct address_space *aspace, | |
170 | CORE_ADDR addr); | |
171 | ||
a14ed312 | 172 | static void breakpoints_info (char *, int); |
c906108c | 173 | |
d77f58be SS |
174 | static void watchpoints_info (char *, int); |
175 | ||
e5a67952 MS |
176 | static int breakpoint_1 (char *, int, |
177 | int (*) (const struct breakpoint *)); | |
c906108c | 178 | |
4efb68b1 | 179 | static int breakpoint_cond_eval (void *); |
c906108c | 180 | |
4efb68b1 | 181 | static void cleanup_executing_breakpoints (void *); |
c906108c | 182 | |
a14ed312 | 183 | static void commands_command (char *, int); |
c906108c | 184 | |
a14ed312 | 185 | static void condition_command (char *, int); |
c906108c | 186 | |
c5aa993b JM |
187 | typedef enum |
188 | { | |
189 | mark_inserted, | |
190 | mark_uninserted | |
191 | } | |
192 | insertion_state_t; | |
c906108c | 193 | |
0bde7532 | 194 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 195 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 196 | |
e514a9d6 | 197 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 198 | |
4efb68b1 | 199 | static int watchpoint_check (void *); |
c906108c | 200 | |
a14ed312 | 201 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 202 | |
a14ed312 | 203 | static int hw_breakpoint_used_count (void); |
c906108c | 204 | |
a1398e0c PA |
205 | static int hw_watchpoint_use_count (struct breakpoint *); |
206 | ||
207 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
208 | enum bptype type, | |
209 | int *other_type_used); | |
c906108c | 210 | |
a14ed312 | 211 | static void hbreak_command (char *, int); |
c906108c | 212 | |
a14ed312 | 213 | static void thbreak_command (char *, int); |
c906108c | 214 | |
816338b5 SS |
215 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
216 | int count); | |
c906108c | 217 | |
a14ed312 | 218 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 219 | |
a14ed312 | 220 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 221 | |
a14ed312 | 222 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 223 | |
a14ed312 | 224 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 225 | |
d85310f7 MS |
226 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
227 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 228 | |
a14ed312 | 229 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 230 | |
d03285ec UW |
231 | static void detach_single_step_breakpoints (void); |
232 | ||
6c95b8df PA |
233 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
234 | CORE_ADDR pc); | |
1aafd4da | 235 | |
fe3f5fa8 | 236 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
237 | static void incref_bp_location (struct bp_location *loc); |
238 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 239 | |
39d61571 | 240 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 241 | |
b60e7edf | 242 | static void update_global_location_list (int); |
a5606eee | 243 | |
b60e7edf | 244 | static void update_global_location_list_nothrow (int); |
74960c60 | 245 | |
d77f58be | 246 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
247 | |
248 | static void insert_breakpoint_locations (void); | |
a5606eee | 249 | |
a96d9b2e SDJ |
250 | static int syscall_catchpoint_p (struct breakpoint *b); |
251 | ||
1042e4c0 SS |
252 | static void tracepoints_info (char *, int); |
253 | ||
254 | static void delete_trace_command (char *, int); | |
255 | ||
256 | static void enable_trace_command (char *, int); | |
257 | ||
258 | static void disable_trace_command (char *, int); | |
259 | ||
260 | static void trace_pass_command (char *, int); | |
261 | ||
9c06b0b4 TJB |
262 | static int is_masked_watchpoint (const struct breakpoint *b); |
263 | ||
b775012e LM |
264 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
265 | ||
983af33b SDJ |
266 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
267 | otherwise. */ | |
268 | ||
269 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 270 | |
edcc5120 TT |
271 | static void init_catchpoint (struct breakpoint *b, |
272 | struct gdbarch *gdbarch, int tempflag, | |
273 | char *cond_string, | |
274 | const struct breakpoint_ops *ops); | |
275 | ||
2060206e PA |
276 | /* The abstract base class all breakpoint_ops structures inherit |
277 | from. */ | |
278 | static struct breakpoint_ops base_breakpoint_ops; | |
279 | ||
280 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
281 | that are implemented on top of software or hardware breakpoints | |
282 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
283 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
284 | ||
285 | /* Internal breakpoints class type. */ | |
06edf0c0 | 286 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
287 | |
288 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
289 | static struct breakpoint_ops momentary_breakpoint_ops; |
290 | ||
e2e4d78b JK |
291 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
292 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
293 | ||
2060206e PA |
294 | /* The breakpoint_ops structure to be used in regular user created |
295 | breakpoints. */ | |
296 | struct breakpoint_ops bkpt_breakpoint_ops; | |
297 | ||
55aa24fb SDJ |
298 | /* Breakpoints set on probes. */ |
299 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
300 | ||
e7e0cddf SS |
301 | /* Dynamic printf class type. */ |
302 | static struct breakpoint_ops dprintf_breakpoint_ops; | |
303 | ||
5cea2a26 PA |
304 | /* A reference-counted struct command_line. This lets multiple |
305 | breakpoints share a single command list. */ | |
306 | struct counted_command_line | |
307 | { | |
308 | /* The reference count. */ | |
309 | int refc; | |
310 | ||
311 | /* The command list. */ | |
312 | struct command_line *commands; | |
313 | }; | |
314 | ||
315 | struct command_line * | |
316 | breakpoint_commands (struct breakpoint *b) | |
317 | { | |
318 | return b->commands ? b->commands->commands : NULL; | |
319 | } | |
3daf8fe5 | 320 | |
f3b1572e PA |
321 | /* Flag indicating that a command has proceeded the inferior past the |
322 | current breakpoint. */ | |
323 | ||
324 | static int breakpoint_proceeded; | |
325 | ||
956a9fb9 | 326 | const char * |
2cec12e5 AR |
327 | bpdisp_text (enum bpdisp disp) |
328 | { | |
4a64f543 MS |
329 | /* NOTE: the following values are a part of MI protocol and |
330 | represent values of 'disp' field returned when inferior stops at | |
331 | a breakpoint. */ | |
bc043ef3 | 332 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 333 | |
2cec12e5 AR |
334 | return bpdisps[(int) disp]; |
335 | } | |
c906108c | 336 | |
4a64f543 | 337 | /* Prototypes for exported functions. */ |
c906108c | 338 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 339 | if such is available. */ |
c906108c SS |
340 | static int can_use_hw_watchpoints; |
341 | ||
920d2a44 AC |
342 | static void |
343 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
344 | struct cmd_list_element *c, | |
345 | const char *value) | |
346 | { | |
3e43a32a MS |
347 | fprintf_filtered (file, |
348 | _("Debugger's willingness to use " | |
349 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
350 | value); |
351 | } | |
352 | ||
fa8d40ab JJ |
353 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
354 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 355 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
356 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
357 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
358 | static void |
359 | show_pending_break_support (struct ui_file *file, int from_tty, | |
360 | struct cmd_list_element *c, | |
361 | const char *value) | |
362 | { | |
3e43a32a MS |
363 | fprintf_filtered (file, |
364 | _("Debugger's behavior regarding " | |
365 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
366 | value); |
367 | } | |
fa8d40ab | 368 | |
765dc015 | 369 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 370 | set with "break" but falling in read-only memory. |
765dc015 VP |
371 | If 0, gdb will warn about such breakpoints, but won't automatically |
372 | use hardware breakpoints. */ | |
373 | static int automatic_hardware_breakpoints; | |
374 | static void | |
375 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
376 | struct cmd_list_element *c, | |
377 | const char *value) | |
378 | { | |
3e43a32a MS |
379 | fprintf_filtered (file, |
380 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
381 | value); |
382 | } | |
383 | ||
33e5cbd6 PA |
384 | /* If on, gdb will keep breakpoints inserted even as inferior is |
385 | stopped, and immediately insert any new breakpoints. If off, gdb | |
386 | will insert breakpoints into inferior only when resuming it, and | |
387 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
388 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
389 | ||
72d0e2c5 YQ |
390 | static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO; |
391 | ||
33e5cbd6 | 392 | static void |
74960c60 | 393 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 394 | struct cmd_list_element *c, const char *value) |
74960c60 | 395 | { |
72d0e2c5 | 396 | if (always_inserted_mode == AUTO_BOOLEAN_AUTO) |
3e43a32a MS |
397 | fprintf_filtered (file, |
398 | _("Always inserted breakpoint " | |
399 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
400 | value, |
401 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
402 | else | |
3e43a32a MS |
403 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
404 | value); | |
74960c60 VP |
405 | } |
406 | ||
33e5cbd6 PA |
407 | int |
408 | breakpoints_always_inserted_mode (void) | |
409 | { | |
72d0e2c5 YQ |
410 | return (always_inserted_mode == AUTO_BOOLEAN_TRUE |
411 | || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop)); | |
33e5cbd6 | 412 | } |
765dc015 | 413 | |
b775012e LM |
414 | static const char condition_evaluation_both[] = "host or target"; |
415 | ||
416 | /* Modes for breakpoint condition evaluation. */ | |
417 | static const char condition_evaluation_auto[] = "auto"; | |
418 | static const char condition_evaluation_host[] = "host"; | |
419 | static const char condition_evaluation_target[] = "target"; | |
420 | static const char *const condition_evaluation_enums[] = { | |
421 | condition_evaluation_auto, | |
422 | condition_evaluation_host, | |
423 | condition_evaluation_target, | |
424 | NULL | |
425 | }; | |
426 | ||
427 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
428 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
429 | ||
430 | /* Global that we use to display information to the user (gets its value from | |
431 | condition_evaluation_mode_1. */ | |
432 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
433 | ||
434 | /* Translate a condition evaluation mode MODE into either "host" | |
435 | or "target". This is used mostly to translate from "auto" to the | |
436 | real setting that is being used. It returns the translated | |
437 | evaluation mode. */ | |
438 | ||
439 | static const char * | |
440 | translate_condition_evaluation_mode (const char *mode) | |
441 | { | |
442 | if (mode == condition_evaluation_auto) | |
443 | { | |
444 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
445 | return condition_evaluation_target; | |
446 | else | |
447 | return condition_evaluation_host; | |
448 | } | |
449 | else | |
450 | return mode; | |
451 | } | |
452 | ||
453 | /* Discovers what condition_evaluation_auto translates to. */ | |
454 | ||
455 | static const char * | |
456 | breakpoint_condition_evaluation_mode (void) | |
457 | { | |
458 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
459 | } | |
460 | ||
461 | /* Return true if GDB should evaluate breakpoint conditions or false | |
462 | otherwise. */ | |
463 | ||
464 | static int | |
465 | gdb_evaluates_breakpoint_condition_p (void) | |
466 | { | |
467 | const char *mode = breakpoint_condition_evaluation_mode (); | |
468 | ||
469 | return (mode == condition_evaluation_host); | |
470 | } | |
471 | ||
a14ed312 | 472 | void _initialize_breakpoint (void); |
c906108c | 473 | |
c906108c SS |
474 | /* Are we executing breakpoint commands? */ |
475 | static int executing_breakpoint_commands; | |
476 | ||
c02f5703 MS |
477 | /* Are overlay event breakpoints enabled? */ |
478 | static int overlay_events_enabled; | |
479 | ||
e09342b5 TJB |
480 | /* See description in breakpoint.h. */ |
481 | int target_exact_watchpoints = 0; | |
482 | ||
c906108c | 483 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 484 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 485 | current breakpoint. */ |
c906108c | 486 | |
5c44784c | 487 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 488 | |
5c44784c JM |
489 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
490 | for (B = breakpoint_chain; \ | |
491 | B ? (TMP=B->next, 1): 0; \ | |
492 | B = TMP) | |
c906108c | 493 | |
4a64f543 MS |
494 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
495 | not provided so update_global_location_list must not be called | |
496 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 497 | |
876fa593 JK |
498 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
499 | for (BP_TMP = bp_location; \ | |
500 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
501 | BP_TMP++) | |
7cc221ef | 502 | |
b775012e LM |
503 | /* Iterates through locations with address ADDRESS for the currently selected |
504 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
505 | to where the loop should start from. | |
506 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
507 | appropriate location to start with. */ | |
508 | ||
509 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
510 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
511 | BP_LOCP_TMP = BP_LOCP_START; \ | |
512 | BP_LOCP_START \ | |
513 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
514 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
515 | BP_LOCP_TMP++) | |
516 | ||
1042e4c0 SS |
517 | /* Iterator for tracepoints only. */ |
518 | ||
519 | #define ALL_TRACEPOINTS(B) \ | |
520 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 521 | if (is_tracepoint (B)) |
1042e4c0 | 522 | |
7cc221ef | 523 | /* Chains of all breakpoints defined. */ |
c906108c SS |
524 | |
525 | struct breakpoint *breakpoint_chain; | |
526 | ||
876fa593 JK |
527 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
528 | ||
529 | static struct bp_location **bp_location; | |
530 | ||
531 | /* Number of elements of BP_LOCATION. */ | |
532 | ||
533 | static unsigned bp_location_count; | |
534 | ||
4a64f543 MS |
535 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
536 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
537 | result from bp_location_has_shadow. You can use it for roughly | |
538 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
539 | an address you need to read. */ | |
876fa593 JK |
540 | |
541 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
542 | ||
4a64f543 MS |
543 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
544 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
545 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
546 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
547 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
548 | |
549 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 550 | |
4a64f543 MS |
551 | /* The locations that no longer correspond to any breakpoint, unlinked |
552 | from bp_location array, but for which a hit may still be reported | |
553 | by a target. */ | |
20874c92 VP |
554 | VEC(bp_location_p) *moribund_locations = NULL; |
555 | ||
c906108c SS |
556 | /* Number of last breakpoint made. */ |
557 | ||
95a42b64 TT |
558 | static int breakpoint_count; |
559 | ||
86b17b60 PA |
560 | /* The value of `breakpoint_count' before the last command that |
561 | created breakpoints. If the last (break-like) command created more | |
562 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
563 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
564 | static int prev_breakpoint_count; | |
c906108c | 565 | |
1042e4c0 SS |
566 | /* Number of last tracepoint made. */ |
567 | ||
95a42b64 | 568 | static int tracepoint_count; |
1042e4c0 | 569 | |
6149aea9 PA |
570 | static struct cmd_list_element *breakpoint_set_cmdlist; |
571 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 572 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 573 | |
468d015d JJ |
574 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
575 | static int | |
576 | breakpoint_enabled (struct breakpoint *b) | |
577 | { | |
0d381245 | 578 | return (b->enable_state == bp_enabled); |
468d015d JJ |
579 | } |
580 | ||
c906108c SS |
581 | /* Set breakpoint count to NUM. */ |
582 | ||
95a42b64 | 583 | static void |
fba45db2 | 584 | set_breakpoint_count (int num) |
c906108c | 585 | { |
86b17b60 | 586 | prev_breakpoint_count = breakpoint_count; |
c906108c | 587 | breakpoint_count = num; |
4fa62494 | 588 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
589 | } |
590 | ||
86b17b60 PA |
591 | /* Used by `start_rbreak_breakpoints' below, to record the current |
592 | breakpoint count before "rbreak" creates any breakpoint. */ | |
593 | static int rbreak_start_breakpoint_count; | |
594 | ||
95a42b64 TT |
595 | /* Called at the start an "rbreak" command to record the first |
596 | breakpoint made. */ | |
86b17b60 | 597 | |
95a42b64 TT |
598 | void |
599 | start_rbreak_breakpoints (void) | |
600 | { | |
86b17b60 | 601 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
602 | } |
603 | ||
604 | /* Called at the end of an "rbreak" command to record the last | |
605 | breakpoint made. */ | |
86b17b60 | 606 | |
95a42b64 TT |
607 | void |
608 | end_rbreak_breakpoints (void) | |
609 | { | |
86b17b60 | 610 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
611 | } |
612 | ||
4a64f543 | 613 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
614 | |
615 | void | |
fba45db2 | 616 | clear_breakpoint_hit_counts (void) |
c906108c SS |
617 | { |
618 | struct breakpoint *b; | |
619 | ||
620 | ALL_BREAKPOINTS (b) | |
621 | b->hit_count = 0; | |
622 | } | |
623 | ||
9add0f1b TT |
624 | /* Allocate a new counted_command_line with reference count of 1. |
625 | The new structure owns COMMANDS. */ | |
626 | ||
627 | static struct counted_command_line * | |
628 | alloc_counted_command_line (struct command_line *commands) | |
629 | { | |
630 | struct counted_command_line *result | |
631 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 632 | |
9add0f1b TT |
633 | result->refc = 1; |
634 | result->commands = commands; | |
635 | return result; | |
636 | } | |
637 | ||
638 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
639 | ||
640 | static void | |
641 | incref_counted_command_line (struct counted_command_line *cmd) | |
642 | { | |
643 | if (cmd) | |
644 | ++cmd->refc; | |
645 | } | |
646 | ||
647 | /* Decrement reference count. If the reference count reaches 0, | |
648 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
649 | nothing if *CMDP is NULL. */ | |
650 | ||
651 | static void | |
652 | decref_counted_command_line (struct counted_command_line **cmdp) | |
653 | { | |
654 | if (*cmdp) | |
655 | { | |
656 | if (--(*cmdp)->refc == 0) | |
657 | { | |
658 | free_command_lines (&(*cmdp)->commands); | |
659 | xfree (*cmdp); | |
660 | } | |
661 | *cmdp = NULL; | |
662 | } | |
663 | } | |
664 | ||
665 | /* A cleanup function that calls decref_counted_command_line. */ | |
666 | ||
667 | static void | |
668 | do_cleanup_counted_command_line (void *arg) | |
669 | { | |
670 | decref_counted_command_line (arg); | |
671 | } | |
672 | ||
673 | /* Create a cleanup that calls decref_counted_command_line on the | |
674 | argument. */ | |
675 | ||
676 | static struct cleanup * | |
677 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
678 | { | |
679 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
680 | } | |
681 | ||
c906108c | 682 | \f |
48cb2d85 VP |
683 | /* Return the breakpoint with the specified number, or NULL |
684 | if the number does not refer to an existing breakpoint. */ | |
685 | ||
686 | struct breakpoint * | |
687 | get_breakpoint (int num) | |
688 | { | |
689 | struct breakpoint *b; | |
690 | ||
691 | ALL_BREAKPOINTS (b) | |
692 | if (b->number == num) | |
693 | return b; | |
694 | ||
695 | return NULL; | |
696 | } | |
5c44784c | 697 | |
c906108c | 698 | \f |
adc36818 | 699 | |
b775012e LM |
700 | /* Mark locations as "conditions have changed" in case the target supports |
701 | evaluating conditions on its side. */ | |
702 | ||
703 | static void | |
704 | mark_breakpoint_modified (struct breakpoint *b) | |
705 | { | |
706 | struct bp_location *loc; | |
707 | ||
708 | /* This is only meaningful if the target is | |
709 | evaluating conditions and if the user has | |
710 | opted for condition evaluation on the target's | |
711 | side. */ | |
712 | if (gdb_evaluates_breakpoint_condition_p () | |
713 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
714 | return; | |
715 | ||
716 | if (!is_breakpoint (b)) | |
717 | return; | |
718 | ||
719 | for (loc = b->loc; loc; loc = loc->next) | |
720 | loc->condition_changed = condition_modified; | |
721 | } | |
722 | ||
723 | /* Mark location as "conditions have changed" in case the target supports | |
724 | evaluating conditions on its side. */ | |
725 | ||
726 | static void | |
727 | mark_breakpoint_location_modified (struct bp_location *loc) | |
728 | { | |
729 | /* This is only meaningful if the target is | |
730 | evaluating conditions and if the user has | |
731 | opted for condition evaluation on the target's | |
732 | side. */ | |
733 | if (gdb_evaluates_breakpoint_condition_p () | |
734 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
735 | ||
736 | return; | |
737 | ||
738 | if (!is_breakpoint (loc->owner)) | |
739 | return; | |
740 | ||
741 | loc->condition_changed = condition_modified; | |
742 | } | |
743 | ||
744 | /* Sets the condition-evaluation mode using the static global | |
745 | condition_evaluation_mode. */ | |
746 | ||
747 | static void | |
748 | set_condition_evaluation_mode (char *args, int from_tty, | |
749 | struct cmd_list_element *c) | |
750 | { | |
b775012e LM |
751 | const char *old_mode, *new_mode; |
752 | ||
753 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
754 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
755 | { | |
756 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
757 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
758 | "Using host evaluation mode instead.")); | |
759 | return; | |
760 | } | |
761 | ||
762 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
763 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
764 | ||
abf1152a JK |
765 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
766 | settings was "auto". */ | |
767 | condition_evaluation_mode = condition_evaluation_mode_1; | |
768 | ||
b775012e LM |
769 | /* Only update the mode if the user picked a different one. */ |
770 | if (new_mode != old_mode) | |
771 | { | |
772 | struct bp_location *loc, **loc_tmp; | |
773 | /* If the user switched to a different evaluation mode, we | |
774 | need to synch the changes with the target as follows: | |
775 | ||
776 | "host" -> "target": Send all (valid) conditions to the target. | |
777 | "target" -> "host": Remove all the conditions from the target. | |
778 | */ | |
779 | ||
b775012e LM |
780 | if (new_mode == condition_evaluation_target) |
781 | { | |
782 | /* Mark everything modified and synch conditions with the | |
783 | target. */ | |
784 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
785 | mark_breakpoint_location_modified (loc); | |
786 | } | |
787 | else | |
788 | { | |
789 | /* Manually mark non-duplicate locations to synch conditions | |
790 | with the target. We do this to remove all the conditions the | |
791 | target knows about. */ | |
792 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
793 | if (is_breakpoint (loc->owner) && loc->inserted) | |
794 | loc->needs_update = 1; | |
795 | } | |
796 | ||
797 | /* Do the update. */ | |
798 | update_global_location_list (1); | |
799 | } | |
800 | ||
801 | return; | |
802 | } | |
803 | ||
804 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
805 | what "auto" is translating to. */ | |
806 | ||
807 | static void | |
808 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
809 | struct cmd_list_element *c, const char *value) | |
810 | { | |
811 | if (condition_evaluation_mode == condition_evaluation_auto) | |
812 | fprintf_filtered (file, | |
813 | _("Breakpoint condition evaluation " | |
814 | "mode is %s (currently %s).\n"), | |
815 | value, | |
816 | breakpoint_condition_evaluation_mode ()); | |
817 | else | |
818 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
819 | value); | |
820 | } | |
821 | ||
822 | /* A comparison function for bp_location AP and BP that is used by | |
823 | bsearch. This comparison function only cares about addresses, unlike | |
824 | the more general bp_location_compare function. */ | |
825 | ||
826 | static int | |
827 | bp_location_compare_addrs (const void *ap, const void *bp) | |
828 | { | |
829 | struct bp_location *a = *(void **) ap; | |
830 | struct bp_location *b = *(void **) bp; | |
831 | ||
832 | if (a->address == b->address) | |
833 | return 0; | |
834 | else | |
835 | return ((a->address > b->address) - (a->address < b->address)); | |
836 | } | |
837 | ||
838 | /* Helper function to skip all bp_locations with addresses | |
839 | less than ADDRESS. It returns the first bp_location that | |
840 | is greater than or equal to ADDRESS. If none is found, just | |
841 | return NULL. */ | |
842 | ||
843 | static struct bp_location ** | |
844 | get_first_locp_gte_addr (CORE_ADDR address) | |
845 | { | |
846 | struct bp_location dummy_loc; | |
847 | struct bp_location *dummy_locp = &dummy_loc; | |
848 | struct bp_location **locp_found = NULL; | |
849 | ||
850 | /* Initialize the dummy location's address field. */ | |
851 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
852 | dummy_loc.address = address; | |
853 | ||
854 | /* Find a close match to the first location at ADDRESS. */ | |
855 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
856 | sizeof (struct bp_location **), | |
857 | bp_location_compare_addrs); | |
858 | ||
859 | /* Nothing was found, nothing left to do. */ | |
860 | if (locp_found == NULL) | |
861 | return NULL; | |
862 | ||
863 | /* We may have found a location that is at ADDRESS but is not the first in the | |
864 | location's list. Go backwards (if possible) and locate the first one. */ | |
865 | while ((locp_found - 1) >= bp_location | |
866 | && (*(locp_found - 1))->address == address) | |
867 | locp_found--; | |
868 | ||
869 | return locp_found; | |
870 | } | |
871 | ||
adc36818 PM |
872 | void |
873 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
874 | int from_tty) | |
875 | { | |
3a5c3e22 PA |
876 | xfree (b->cond_string); |
877 | b->cond_string = NULL; | |
adc36818 | 878 | |
3a5c3e22 | 879 | if (is_watchpoint (b)) |
adc36818 | 880 | { |
3a5c3e22 PA |
881 | struct watchpoint *w = (struct watchpoint *) b; |
882 | ||
883 | xfree (w->cond_exp); | |
884 | w->cond_exp = NULL; | |
885 | } | |
886 | else | |
887 | { | |
888 | struct bp_location *loc; | |
889 | ||
890 | for (loc = b->loc; loc; loc = loc->next) | |
891 | { | |
892 | xfree (loc->cond); | |
893 | loc->cond = NULL; | |
b775012e LM |
894 | |
895 | /* No need to free the condition agent expression | |
896 | bytecode (if we have one). We will handle this | |
897 | when we go through update_global_location_list. */ | |
3a5c3e22 | 898 | } |
adc36818 | 899 | } |
adc36818 PM |
900 | |
901 | if (*exp == 0) | |
902 | { | |
903 | if (from_tty) | |
904 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
905 | } | |
906 | else | |
907 | { | |
908 | char *arg = exp; | |
cc59ec59 | 909 | |
adc36818 PM |
910 | /* I don't know if it matters whether this is the string the user |
911 | typed in or the decompiled expression. */ | |
912 | b->cond_string = xstrdup (arg); | |
913 | b->condition_not_parsed = 0; | |
914 | ||
915 | if (is_watchpoint (b)) | |
916 | { | |
3a5c3e22 PA |
917 | struct watchpoint *w = (struct watchpoint *) b; |
918 | ||
adc36818 PM |
919 | innermost_block = NULL; |
920 | arg = exp; | |
1bb9788d | 921 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
922 | if (*arg) |
923 | error (_("Junk at end of expression")); | |
3a5c3e22 | 924 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
925 | } |
926 | else | |
927 | { | |
3a5c3e22 PA |
928 | struct bp_location *loc; |
929 | ||
adc36818 PM |
930 | for (loc = b->loc; loc; loc = loc->next) |
931 | { | |
932 | arg = exp; | |
933 | loc->cond = | |
1bb9788d TT |
934 | parse_exp_1 (&arg, loc->address, |
935 | block_for_pc (loc->address), 0); | |
adc36818 PM |
936 | if (*arg) |
937 | error (_("Junk at end of expression")); | |
938 | } | |
939 | } | |
940 | } | |
b775012e LM |
941 | mark_breakpoint_modified (b); |
942 | ||
adc36818 | 943 | breakpoints_changed (); |
8d3788bd | 944 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
945 | } |
946 | ||
d55637df TT |
947 | /* Completion for the "condition" command. */ |
948 | ||
949 | static VEC (char_ptr) * | |
950 | condition_completer (struct cmd_list_element *cmd, char *text, char *word) | |
951 | { | |
952 | char *space; | |
953 | ||
954 | text = skip_spaces (text); | |
955 | space = skip_to_space (text); | |
956 | if (*space == '\0') | |
957 | { | |
958 | int len; | |
959 | struct breakpoint *b; | |
960 | VEC (char_ptr) *result = NULL; | |
961 | ||
962 | if (text[0] == '$') | |
963 | { | |
964 | /* We don't support completion of history indices. */ | |
965 | if (isdigit (text[1])) | |
966 | return NULL; | |
967 | return complete_internalvar (&text[1]); | |
968 | } | |
969 | ||
970 | /* We're completing the breakpoint number. */ | |
971 | len = strlen (text); | |
972 | ||
973 | ALL_BREAKPOINTS (b) | |
974 | { | |
975 | int single = b->loc->next == NULL; | |
976 | struct bp_location *loc; | |
977 | int count = 1; | |
978 | ||
979 | for (loc = b->loc; loc; loc = loc->next) | |
980 | { | |
981 | char location[50]; | |
982 | ||
983 | if (single) | |
984 | sprintf (location, "%d", b->number); | |
985 | else | |
986 | sprintf (location, "%d.%d", b->number, count); | |
987 | ||
988 | if (strncmp (location, text, len) == 0) | |
989 | VEC_safe_push (char_ptr, result, xstrdup (location)); | |
990 | ||
991 | ++count; | |
992 | } | |
993 | } | |
994 | ||
995 | return result; | |
996 | } | |
997 | ||
998 | /* We're completing the expression part. */ | |
999 | text = skip_spaces (space); | |
1000 | return expression_completer (cmd, text, word); | |
1001 | } | |
1002 | ||
c906108c SS |
1003 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1004 | ||
1005 | static void | |
fba45db2 | 1006 | condition_command (char *arg, int from_tty) |
c906108c | 1007 | { |
52f0bd74 | 1008 | struct breakpoint *b; |
c906108c | 1009 | char *p; |
52f0bd74 | 1010 | int bnum; |
c906108c SS |
1011 | |
1012 | if (arg == 0) | |
e2e0b3e5 | 1013 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1014 | |
1015 | p = arg; | |
1016 | bnum = get_number (&p); | |
5c44784c | 1017 | if (bnum == 0) |
8a3fe4f8 | 1018 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1019 | |
1020 | ALL_BREAKPOINTS (b) | |
1021 | if (b->number == bnum) | |
2f069f6f | 1022 | { |
7371cf6d PM |
1023 | /* Check if this breakpoint has a Python object assigned to |
1024 | it, and if it has a definition of the "stop" | |
1025 | method. This method and conditions entered into GDB from | |
1026 | the CLI are mutually exclusive. */ | |
1027 | if (b->py_bp_object | |
1028 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
1029 | error (_("Cannot set a condition where a Python 'stop' " | |
1030 | "method has been defined in the breakpoint.")); | |
2566ad2d | 1031 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1032 | |
1033 | if (is_breakpoint (b)) | |
1034 | update_global_location_list (1); | |
1035 | ||
2f069f6f JB |
1036 | return; |
1037 | } | |
c906108c | 1038 | |
8a3fe4f8 | 1039 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1040 | } |
1041 | ||
a7bdde9e VP |
1042 | /* Check that COMMAND do not contain commands that are suitable |
1043 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1044 | Throw if any such commands is found. */ |
1045 | ||
a7bdde9e VP |
1046 | static void |
1047 | check_no_tracepoint_commands (struct command_line *commands) | |
1048 | { | |
1049 | struct command_line *c; | |
cc59ec59 | 1050 | |
a7bdde9e VP |
1051 | for (c = commands; c; c = c->next) |
1052 | { | |
1053 | int i; | |
1054 | ||
1055 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1056 | error (_("The 'while-stepping' command can " |
1057 | "only be used for tracepoints")); | |
a7bdde9e VP |
1058 | |
1059 | for (i = 0; i < c->body_count; ++i) | |
1060 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1061 | ||
1062 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1063 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1064 | command directly. */ |
1065 | if (strstr (c->line, "collect ") == c->line) | |
1066 | error (_("The 'collect' command can only be used for tracepoints")); | |
1067 | ||
51661e93 VP |
1068 | if (strstr (c->line, "teval ") == c->line) |
1069 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1070 | } |
1071 | } | |
1072 | ||
d77f58be SS |
1073 | /* Encapsulate tests for different types of tracepoints. */ |
1074 | ||
d9b3f62e PA |
1075 | static int |
1076 | is_tracepoint_type (enum bptype type) | |
1077 | { | |
1078 | return (type == bp_tracepoint | |
1079 | || type == bp_fast_tracepoint | |
1080 | || type == bp_static_tracepoint); | |
1081 | } | |
1082 | ||
a7bdde9e | 1083 | int |
d77f58be | 1084 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1085 | { |
d9b3f62e | 1086 | return is_tracepoint_type (b->type); |
a7bdde9e | 1087 | } |
d9b3f62e | 1088 | |
e5dd4106 | 1089 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1090 | breakpoint. This function will throw an exception if a problem is |
1091 | found. */ | |
48cb2d85 | 1092 | |
95a42b64 TT |
1093 | static void |
1094 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1095 | struct command_line *commands) | |
48cb2d85 | 1096 | { |
d77f58be | 1097 | if (is_tracepoint (b)) |
a7bdde9e | 1098 | { |
4a64f543 MS |
1099 | /* We need to verify that each top-level element of commands is |
1100 | valid for tracepoints, that there's at most one | |
1101 | while-stepping element, and that while-stepping's body has | |
1102 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
1103 | struct command_line *c; |
1104 | struct command_line *while_stepping = 0; | |
1105 | for (c = commands; c; c = c->next) | |
1106 | { | |
a7bdde9e VP |
1107 | if (c->control_type == while_stepping_control) |
1108 | { | |
1109 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1110 | error (_("The 'while-stepping' command " |
1111 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1112 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1113 | error (_("The 'while-stepping' command " |
1114 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1115 | |
1116 | if (while_stepping) | |
3e43a32a MS |
1117 | error (_("The 'while-stepping' command " |
1118 | "can be used only once")); | |
a7bdde9e VP |
1119 | else |
1120 | while_stepping = c; | |
1121 | } | |
1122 | } | |
1123 | if (while_stepping) | |
1124 | { | |
1125 | struct command_line *c2; | |
1126 | ||
1127 | gdb_assert (while_stepping->body_count == 1); | |
1128 | c2 = while_stepping->body_list[0]; | |
1129 | for (; c2; c2 = c2->next) | |
1130 | { | |
a7bdde9e VP |
1131 | if (c2->control_type == while_stepping_control) |
1132 | error (_("The 'while-stepping' command cannot be nested")); | |
1133 | } | |
1134 | } | |
1135 | } | |
1136 | else | |
1137 | { | |
1138 | check_no_tracepoint_commands (commands); | |
1139 | } | |
95a42b64 TT |
1140 | } |
1141 | ||
0fb4aa4b PA |
1142 | /* Return a vector of all the static tracepoints set at ADDR. The |
1143 | caller is responsible for releasing the vector. */ | |
1144 | ||
1145 | VEC(breakpoint_p) * | |
1146 | static_tracepoints_here (CORE_ADDR addr) | |
1147 | { | |
1148 | struct breakpoint *b; | |
1149 | VEC(breakpoint_p) *found = 0; | |
1150 | struct bp_location *loc; | |
1151 | ||
1152 | ALL_BREAKPOINTS (b) | |
1153 | if (b->type == bp_static_tracepoint) | |
1154 | { | |
1155 | for (loc = b->loc; loc; loc = loc->next) | |
1156 | if (loc->address == addr) | |
1157 | VEC_safe_push(breakpoint_p, found, b); | |
1158 | } | |
1159 | ||
1160 | return found; | |
1161 | } | |
1162 | ||
95a42b64 | 1163 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1164 | validate that only allowed commands are included. */ |
95a42b64 TT |
1165 | |
1166 | void | |
4a64f543 MS |
1167 | breakpoint_set_commands (struct breakpoint *b, |
1168 | struct command_line *commands) | |
95a42b64 TT |
1169 | { |
1170 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1171 | |
9add0f1b TT |
1172 | decref_counted_command_line (&b->commands); |
1173 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 | 1174 | breakpoints_changed (); |
8d3788bd | 1175 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1176 | } |
1177 | ||
45a43567 TT |
1178 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1179 | is not the same as the "silent" that may appear in the breakpoint's | |
1180 | commands. */ | |
1181 | ||
1182 | void | |
1183 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1184 | { | |
1185 | int old_silent = b->silent; | |
1186 | ||
1187 | b->silent = silent; | |
1188 | if (old_silent != silent) | |
8d3788bd | 1189 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1190 | } |
1191 | ||
1192 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1193 | breakpoint work for any thread. */ | |
1194 | ||
1195 | void | |
1196 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1197 | { | |
1198 | int old_thread = b->thread; | |
1199 | ||
1200 | b->thread = thread; | |
1201 | if (old_thread != thread) | |
8d3788bd | 1202 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1203 | } |
1204 | ||
1205 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1206 | breakpoint work for any task. */ | |
1207 | ||
1208 | void | |
1209 | breakpoint_set_task (struct breakpoint *b, int task) | |
1210 | { | |
1211 | int old_task = b->task; | |
1212 | ||
1213 | b->task = task; | |
1214 | if (old_task != task) | |
8d3788bd | 1215 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1216 | } |
1217 | ||
95a42b64 TT |
1218 | void |
1219 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1220 | { |
1221 | struct breakpoint *b = closure; | |
cc59ec59 | 1222 | |
a7bdde9e VP |
1223 | validate_actionline (&line, b); |
1224 | } | |
1225 | ||
95a42b64 TT |
1226 | /* A structure used to pass information through |
1227 | map_breakpoint_numbers. */ | |
1228 | ||
1229 | struct commands_info | |
1230 | { | |
1231 | /* True if the command was typed at a tty. */ | |
1232 | int from_tty; | |
86b17b60 PA |
1233 | |
1234 | /* The breakpoint range spec. */ | |
1235 | char *arg; | |
1236 | ||
95a42b64 TT |
1237 | /* Non-NULL if the body of the commands are being read from this |
1238 | already-parsed command. */ | |
1239 | struct command_line *control; | |
86b17b60 | 1240 | |
95a42b64 TT |
1241 | /* The command lines read from the user, or NULL if they have not |
1242 | yet been read. */ | |
1243 | struct counted_command_line *cmd; | |
1244 | }; | |
1245 | ||
1246 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1247 | commands_command. */ | |
1248 | ||
c906108c | 1249 | static void |
95a42b64 | 1250 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1251 | { |
95a42b64 | 1252 | struct commands_info *info = data; |
c906108c | 1253 | |
95a42b64 TT |
1254 | if (info->cmd == NULL) |
1255 | { | |
1256 | struct command_line *l; | |
5c44784c | 1257 | |
95a42b64 TT |
1258 | if (info->control != NULL) |
1259 | l = copy_command_lines (info->control->body_list[0]); | |
1260 | else | |
86b17b60 PA |
1261 | { |
1262 | struct cleanup *old_chain; | |
1263 | char *str; | |
c5aa993b | 1264 | |
3e43a32a MS |
1265 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1266 | "%s, one per line."), | |
86b17b60 PA |
1267 | info->arg); |
1268 | ||
1269 | old_chain = make_cleanup (xfree, str); | |
1270 | ||
1271 | l = read_command_lines (str, | |
1272 | info->from_tty, 1, | |
d77f58be | 1273 | (is_tracepoint (b) |
86b17b60 PA |
1274 | ? check_tracepoint_command : 0), |
1275 | b); | |
1276 | ||
1277 | do_cleanups (old_chain); | |
1278 | } | |
a7bdde9e | 1279 | |
95a42b64 TT |
1280 | info->cmd = alloc_counted_command_line (l); |
1281 | } | |
1282 | ||
1283 | /* If a breakpoint was on the list more than once, we don't need to | |
1284 | do anything. */ | |
1285 | if (b->commands != info->cmd) | |
1286 | { | |
1287 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1288 | incref_counted_command_line (info->cmd); | |
1289 | decref_counted_command_line (&b->commands); | |
1290 | b->commands = info->cmd; | |
1291 | breakpoints_changed (); | |
8d3788bd | 1292 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1293 | } |
95a42b64 TT |
1294 | } |
1295 | ||
1296 | static void | |
4a64f543 MS |
1297 | commands_command_1 (char *arg, int from_tty, |
1298 | struct command_line *control) | |
95a42b64 TT |
1299 | { |
1300 | struct cleanup *cleanups; | |
1301 | struct commands_info info; | |
1302 | ||
1303 | info.from_tty = from_tty; | |
1304 | info.control = control; | |
1305 | info.cmd = NULL; | |
1306 | /* If we read command lines from the user, then `info' will hold an | |
1307 | extra reference to the commands that we must clean up. */ | |
1308 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1309 | ||
1310 | if (arg == NULL || !*arg) | |
1311 | { | |
86b17b60 | 1312 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1313 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1314 | breakpoint_count); | |
95a42b64 TT |
1315 | else if (breakpoint_count > 0) |
1316 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1317 | else |
1318 | { | |
1319 | /* So that we don't try to free the incoming non-NULL | |
1320 | argument in the cleanup below. Mapping breakpoint | |
1321 | numbers will fail in this case. */ | |
1322 | arg = NULL; | |
1323 | } | |
95a42b64 | 1324 | } |
9766ced4 SS |
1325 | else |
1326 | /* The command loop has some static state, so we need to preserve | |
1327 | our argument. */ | |
1328 | arg = xstrdup (arg); | |
86b17b60 PA |
1329 | |
1330 | if (arg != NULL) | |
1331 | make_cleanup (xfree, arg); | |
1332 | ||
1333 | info.arg = arg; | |
95a42b64 TT |
1334 | |
1335 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1336 | ||
1337 | if (info.cmd == NULL) | |
1338 | error (_("No breakpoints specified.")); | |
1339 | ||
1340 | do_cleanups (cleanups); | |
1341 | } | |
1342 | ||
1343 | static void | |
1344 | commands_command (char *arg, int from_tty) | |
1345 | { | |
1346 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1347 | } |
40c03ae8 EZ |
1348 | |
1349 | /* Like commands_command, but instead of reading the commands from | |
1350 | input stream, takes them from an already parsed command structure. | |
1351 | ||
1352 | This is used by cli-script.c to DTRT with breakpoint commands | |
1353 | that are part of if and while bodies. */ | |
1354 | enum command_control_type | |
1355 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1356 | { | |
95a42b64 TT |
1357 | commands_command_1 (arg, 0, cmd); |
1358 | return simple_control; | |
40c03ae8 | 1359 | } |
876fa593 JK |
1360 | |
1361 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1362 | ||
1363 | static int | |
1364 | bp_location_has_shadow (struct bp_location *bl) | |
1365 | { | |
1366 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1367 | return 0; | |
1368 | if (!bl->inserted) | |
1369 | return 0; | |
1370 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1371 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1372 | return 0; |
1373 | return 1; | |
1374 | } | |
1375 | ||
8defab1a | 1376 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1377 | by replacing any memory breakpoints with their shadowed contents. |
1378 | ||
35c63cd8 JB |
1379 | If READBUF is not NULL, this buffer must not overlap with any of |
1380 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1381 | a failed assertion internal error will be raised. | |
1382 | ||
876fa593 | 1383 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1384 | bl->address - bp_location_placed_address_before_address_max |
1385 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1386 | The range we were requested to resolve shadows for is: |
1387 | memaddr ... memaddr + len | |
1388 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1389 | memaddr + len <= (bl->address |
1390 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1391 | and: |
35df4500 | 1392 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1393 | |
8defab1a | 1394 | void |
f0ba3972 PA |
1395 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1396 | const gdb_byte *writebuf_org, | |
1397 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1398 | { |
4a64f543 MS |
1399 | /* Left boundary, right boundary and median element of our binary |
1400 | search. */ | |
876fa593 JK |
1401 | unsigned bc_l, bc_r, bc; |
1402 | ||
4a64f543 MS |
1403 | /* Find BC_L which is a leftmost element which may affect BUF |
1404 | content. It is safe to report lower value but a failure to | |
1405 | report higher one. */ | |
876fa593 JK |
1406 | |
1407 | bc_l = 0; | |
1408 | bc_r = bp_location_count; | |
1409 | while (bc_l + 1 < bc_r) | |
1410 | { | |
35df4500 | 1411 | struct bp_location *bl; |
876fa593 JK |
1412 | |
1413 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1414 | bl = bp_location[bc]; |
876fa593 | 1415 | |
4a64f543 MS |
1416 | /* Check first BL->ADDRESS will not overflow due to the added |
1417 | constant. Then advance the left boundary only if we are sure | |
1418 | the BC element can in no way affect the BUF content (MEMADDR | |
1419 | to MEMADDR + LEN range). | |
876fa593 | 1420 | |
4a64f543 MS |
1421 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1422 | offset so that we cannot miss a breakpoint with its shadow | |
1423 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1424 | |
35df4500 TJB |
1425 | if ((bl->address + bp_location_shadow_len_after_address_max |
1426 | >= bl->address) | |
1427 | && (bl->address + bp_location_shadow_len_after_address_max | |
1428 | <= memaddr)) | |
876fa593 JK |
1429 | bc_l = bc; |
1430 | else | |
1431 | bc_r = bc; | |
1432 | } | |
1433 | ||
128070bb PA |
1434 | /* Due to the binary search above, we need to make sure we pick the |
1435 | first location that's at BC_L's address. E.g., if there are | |
1436 | multiple locations at the same address, BC_L may end up pointing | |
1437 | at a duplicate location, and miss the "master"/"inserted" | |
1438 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1439 | B: | |
1440 | ||
1441 | L1@A, L2@A, L3@B, ... | |
1442 | ||
1443 | BC_L could end up pointing at location L2, while the "master" | |
1444 | location could be L1. Since the `loc->inserted' flag is only set | |
1445 | on "master" locations, we'd forget to restore the shadow of L1 | |
1446 | and L2. */ | |
1447 | while (bc_l > 0 | |
1448 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1449 | bc_l--; | |
1450 | ||
876fa593 JK |
1451 | /* Now do full processing of the found relevant range of elements. */ |
1452 | ||
1453 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1454 | { |
35df4500 | 1455 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1456 | CORE_ADDR bp_addr = 0; |
1457 | int bp_size = 0; | |
1458 | int bptoffset = 0; | |
1459 | ||
35df4500 TJB |
1460 | /* bp_location array has BL->OWNER always non-NULL. */ |
1461 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1462 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1463 | bl->owner->number); |
ffce0d52 | 1464 | |
e5dd4106 | 1465 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1466 | content. */ |
1467 | ||
35df4500 TJB |
1468 | if (bl->address >= bp_location_placed_address_before_address_max |
1469 | && memaddr + len <= (bl->address | |
1470 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1471 | break; |
1472 | ||
35df4500 | 1473 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1474 | continue; |
35df4500 | 1475 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1476 | current_program_space->aspace, 0)) |
1477 | continue; | |
1478 | ||
c5aa993b JM |
1479 | /* Addresses and length of the part of the breakpoint that |
1480 | we need to copy. */ | |
35df4500 TJB |
1481 | bp_addr = bl->target_info.placed_address; |
1482 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1483 | |
c5aa993b JM |
1484 | if (bp_addr + bp_size <= memaddr) |
1485 | /* The breakpoint is entirely before the chunk of memory we | |
1486 | are reading. */ | |
1487 | continue; | |
8defab1a | 1488 | |
c5aa993b JM |
1489 | if (bp_addr >= memaddr + len) |
1490 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1491 | reading. */ |
c5aa993b | 1492 | continue; |
c5aa993b | 1493 | |
8defab1a DJ |
1494 | /* Offset within shadow_contents. */ |
1495 | if (bp_addr < memaddr) | |
1496 | { | |
1497 | /* Only copy the second part of the breakpoint. */ | |
1498 | bp_size -= memaddr - bp_addr; | |
1499 | bptoffset = memaddr - bp_addr; | |
1500 | bp_addr = memaddr; | |
1501 | } | |
c5aa993b | 1502 | |
8defab1a DJ |
1503 | if (bp_addr + bp_size > memaddr + len) |
1504 | { | |
1505 | /* Only copy the first part of the breakpoint. */ | |
1506 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1507 | } | |
c5aa993b | 1508 | |
f0ba3972 PA |
1509 | if (readbuf != NULL) |
1510 | { | |
35c63cd8 JB |
1511 | /* Verify that the readbuf buffer does not overlap with |
1512 | the shadow_contents buffer. */ | |
1513 | gdb_assert (bl->target_info.shadow_contents >= readbuf + len | |
1514 | || readbuf >= (bl->target_info.shadow_contents | |
1515 | + bl->target_info.shadow_len)); | |
1516 | ||
f0ba3972 PA |
1517 | /* Update the read buffer with this inserted breakpoint's |
1518 | shadow. */ | |
1519 | memcpy (readbuf + bp_addr - memaddr, | |
1520 | bl->target_info.shadow_contents + bptoffset, bp_size); | |
1521 | } | |
1522 | else | |
1523 | { | |
1524 | struct gdbarch *gdbarch = bl->gdbarch; | |
1525 | const unsigned char *bp; | |
1526 | CORE_ADDR placed_address = bl->target_info.placed_address; | |
1527 | unsigned placed_size = bl->target_info.placed_size; | |
1528 | ||
1529 | /* Update the shadow with what we want to write to memory. */ | |
1530 | memcpy (bl->target_info.shadow_contents + bptoffset, | |
1531 | writebuf_org + bp_addr - memaddr, bp_size); | |
1532 | ||
1533 | /* Determine appropriate breakpoint contents and size for this | |
1534 | address. */ | |
1535 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1536 | ||
1537 | /* Update the final write buffer with this inserted | |
1538 | breakpoint's INSN. */ | |
1539 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1540 | } | |
c5aa993b | 1541 | } |
c906108c | 1542 | } |
c906108c | 1543 | \f |
c5aa993b | 1544 | |
b775012e LM |
1545 | /* Return true if BPT is either a software breakpoint or a hardware |
1546 | breakpoint. */ | |
1547 | ||
1548 | int | |
1549 | is_breakpoint (const struct breakpoint *bpt) | |
1550 | { | |
1551 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1552 | || bpt->type == bp_hardware_breakpoint |
1553 | || bpt->type == bp_dprintf); | |
b775012e LM |
1554 | } |
1555 | ||
60e1c644 PA |
1556 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1557 | ||
a5606eee | 1558 | static int |
d77f58be | 1559 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1560 | { |
1561 | return (bpt->type == bp_hardware_watchpoint | |
1562 | || bpt->type == bp_read_watchpoint | |
1563 | || bpt->type == bp_access_watchpoint); | |
1564 | } | |
7270d8f2 | 1565 | |
60e1c644 PA |
1566 | /* Return true if BPT is of any watchpoint kind, hardware or |
1567 | software. */ | |
1568 | ||
3a5c3e22 | 1569 | int |
d77f58be | 1570 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1571 | { |
1572 | return (is_hardware_watchpoint (bpt) | |
1573 | || bpt->type == bp_watchpoint); | |
1574 | } | |
1575 | ||
3a5c3e22 PA |
1576 | /* Returns true if the current thread and its running state are safe |
1577 | to evaluate or update watchpoint B. Watchpoints on local | |
1578 | expressions need to be evaluated in the context of the thread that | |
1579 | was current when the watchpoint was created, and, that thread needs | |
1580 | to be stopped to be able to select the correct frame context. | |
1581 | Watchpoints on global expressions can be evaluated on any thread, | |
1582 | and in any state. It is presently left to the target allowing | |
1583 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1584 | |
1585 | static int | |
3a5c3e22 | 1586 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1587 | { |
d0d8b0c6 JK |
1588 | return (b->base.pspace == current_program_space |
1589 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1590 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1591 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1592 | } |
1593 | ||
d0fb5eae JK |
1594 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1595 | associated bp_watchpoint_scope breakpoint. */ | |
1596 | ||
1597 | static void | |
3a5c3e22 | 1598 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1599 | { |
3a5c3e22 | 1600 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1601 | |
1602 | if (b->related_breakpoint != b) | |
1603 | { | |
1604 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1605 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1606 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1607 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1608 | b->related_breakpoint = b; | |
1609 | } | |
1610 | b->disposition = disp_del_at_next_stop; | |
1611 | } | |
1612 | ||
567e1b4e JB |
1613 | /* Assuming that B is a watchpoint: |
1614 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1615 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1616 | - Evaluate the condition if there is one, and store the result |
1617 | in b->loc->cond. | |
a5606eee VP |
1618 | - Update the list of values that must be watched in B->loc. |
1619 | ||
4a64f543 MS |
1620 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1621 | nothing. If this is local watchpoint that is out of scope, delete | |
1622 | it. | |
1623 | ||
1624 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1625 | removed + inserted on each stop here. Normal breakpoints must | |
1626 | never be removed because they might be missed by a running thread | |
1627 | when debugging in non-stop mode. On the other hand, hardware | |
1628 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1629 | to each LWP since they are stored in each LWP's hardware debug | |
1630 | registers. Therefore, such LWP must be stopped first in order to | |
1631 | be able to modify its hardware watchpoints. | |
1632 | ||
1633 | Hardware watchpoints must be reset exactly once after being | |
1634 | presented to the user. It cannot be done sooner, because it would | |
1635 | reset the data used to present the watchpoint hit to the user. And | |
1636 | it must not be done later because it could display the same single | |
1637 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1638 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1639 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1640 | not user-visible - its hit is suppressed if the memory content has | |
1641 | not changed. | |
1642 | ||
1643 | The following constraints influence the location where we can reset | |
1644 | hardware watchpoints: | |
1645 | ||
1646 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1647 | called several times when GDB stops. | |
1648 | ||
1649 | [linux] | |
1650 | * Multiple hardware watchpoints can be hit at the same time, | |
1651 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1652 | hit at a time as the reason for stopping, and all the other hits | |
1653 | are presented later, one after the other, each time the user | |
1654 | requests the execution to be resumed. Execution is not resumed | |
1655 | for the threads still having pending hit event stored in | |
1656 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1657 | the inferior on the first stop the thread hit event is kept being | |
1658 | reported from its cached value by linux_nat_stopped_data_address | |
1659 | until the real thread resume happens after the watchpoint gets | |
1660 | presented and thus its LWP_INFO->STATUS gets reset. | |
1661 | ||
1662 | Therefore the hardware watchpoint hit can get safely reset on the | |
1663 | watchpoint removal from inferior. */ | |
a79d3c27 | 1664 | |
b40ce68a | 1665 | static void |
3a5c3e22 | 1666 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1667 | { |
a5606eee | 1668 | int within_current_scope; |
a5606eee | 1669 | struct frame_id saved_frame_id; |
66076460 | 1670 | int frame_saved; |
a5606eee | 1671 | |
f6bc2008 PA |
1672 | /* If this is a local watchpoint, we only want to check if the |
1673 | watchpoint frame is in scope if the current thread is the thread | |
1674 | that was used to create the watchpoint. */ | |
1675 | if (!watchpoint_in_thread_scope (b)) | |
1676 | return; | |
1677 | ||
3a5c3e22 | 1678 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1679 | return; |
1680 | ||
66076460 | 1681 | frame_saved = 0; |
a5606eee VP |
1682 | |
1683 | /* Determine if the watchpoint is within scope. */ | |
1684 | if (b->exp_valid_block == NULL) | |
1685 | within_current_scope = 1; | |
1686 | else | |
1687 | { | |
b5db5dfc UW |
1688 | struct frame_info *fi = get_current_frame (); |
1689 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1690 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1691 | ||
1692 | /* If we're in a function epilogue, unwinding may not work | |
1693 | properly, so do not attempt to recreate locations at this | |
1694 | point. See similar comments in watchpoint_check. */ | |
1695 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1696 | return; | |
66076460 DJ |
1697 | |
1698 | /* Save the current frame's ID so we can restore it after | |
1699 | evaluating the watchpoint expression on its own frame. */ | |
1700 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1701 | took a frame parameter, so that we didn't have to change the | |
1702 | selected frame. */ | |
1703 | frame_saved = 1; | |
1704 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1705 | ||
a5606eee VP |
1706 | fi = frame_find_by_id (b->watchpoint_frame); |
1707 | within_current_scope = (fi != NULL); | |
1708 | if (within_current_scope) | |
1709 | select_frame (fi); | |
1710 | } | |
1711 | ||
b5db5dfc UW |
1712 | /* We don't free locations. They are stored in the bp_location array |
1713 | and update_global_location_list will eventually delete them and | |
1714 | remove breakpoints if needed. */ | |
3a5c3e22 | 1715 | b->base.loc = NULL; |
b5db5dfc | 1716 | |
a5606eee VP |
1717 | if (within_current_scope && reparse) |
1718 | { | |
1719 | char *s; | |
d63d0675 | 1720 | |
a5606eee VP |
1721 | if (b->exp) |
1722 | { | |
1723 | xfree (b->exp); | |
1724 | b->exp = NULL; | |
1725 | } | |
d63d0675 | 1726 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1727 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1728 | /* If the meaning of expression itself changed, the old value is |
1729 | no longer relevant. We don't want to report a watchpoint hit | |
1730 | to the user when the old value and the new value may actually | |
1731 | be completely different objects. */ | |
1732 | value_free (b->val); | |
fa4727a6 DJ |
1733 | b->val = NULL; |
1734 | b->val_valid = 0; | |
60e1c644 PA |
1735 | |
1736 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1737 | expression is stored in the breakpoint object, not in the | |
1738 | locations (re)created below. */ | |
3a5c3e22 | 1739 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1740 | { |
1741 | if (b->cond_exp != NULL) | |
1742 | { | |
1743 | xfree (b->cond_exp); | |
1744 | b->cond_exp = NULL; | |
1745 | } | |
1746 | ||
3a5c3e22 | 1747 | s = b->base.cond_string; |
1bb9788d | 1748 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1749 | } |
a5606eee | 1750 | } |
a5606eee VP |
1751 | |
1752 | /* If we failed to parse the expression, for example because | |
1753 | it refers to a global variable in a not-yet-loaded shared library, | |
1754 | don't try to insert watchpoint. We don't automatically delete | |
1755 | such watchpoint, though, since failure to parse expression | |
1756 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1757 | if ( !target_has_execution) |
1758 | { | |
1759 | /* Without execution, memory can't change. No use to try and | |
1760 | set watchpoint locations. The watchpoint will be reset when | |
1761 | the target gains execution, through breakpoint_re_set. */ | |
1762 | } | |
1763 | else if (within_current_scope && b->exp) | |
a5606eee | 1764 | { |
0cf6dd15 | 1765 | int pc = 0; |
fa4727a6 | 1766 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1767 | struct program_space *frame_pspace; |
a5606eee | 1768 | |
0cf6dd15 | 1769 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1770 | |
a5606eee VP |
1771 | /* Avoid setting b->val if it's already set. The meaning of |
1772 | b->val is 'the last value' user saw, and we should update | |
1773 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1774 | happens, the code that reports it updates b->val directly. |
1775 | We don't keep track of the memory value for masked | |
1776 | watchpoints. */ | |
3a5c3e22 | 1777 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1778 | { |
1779 | b->val = v; | |
1780 | b->val_valid = 1; | |
1781 | } | |
a5606eee | 1782 | |
2d134ed3 PA |
1783 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1784 | ||
a5606eee | 1785 | /* Look at each value on the value chain. */ |
9fa40276 | 1786 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1787 | { |
1788 | /* If it's a memory location, and GDB actually needed | |
1789 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1790 | must watch it. If the first value returned is |
1791 | still lazy, that means an error occurred reading it; | |
1792 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1793 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1794 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1795 | { |
1796 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1797 | |
a5606eee VP |
1798 | /* We only watch structs and arrays if user asked |
1799 | for it explicitly, never if they just happen to | |
1800 | appear in the middle of some value chain. */ | |
fa4727a6 | 1801 | if (v == result |
a5606eee VP |
1802 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1803 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1804 | { | |
1805 | CORE_ADDR addr; | |
1806 | int len, type; | |
1807 | struct bp_location *loc, **tmp; | |
1808 | ||
42ae5230 | 1809 | addr = value_address (v); |
a5606eee VP |
1810 | len = TYPE_LENGTH (value_type (v)); |
1811 | type = hw_write; | |
3a5c3e22 | 1812 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1813 | type = hw_read; |
3a5c3e22 | 1814 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1815 | type = hw_access; |
3a5c3e22 PA |
1816 | |
1817 | loc = allocate_bp_location (&b->base); | |
1818 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1819 | ; |
1820 | *tmp = loc; | |
a6d9a66e | 1821 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1822 | |
1823 | loc->pspace = frame_pspace; | |
a5606eee VP |
1824 | loc->address = addr; |
1825 | loc->length = len; | |
1826 | loc->watchpoint_type = type; | |
1827 | } | |
1828 | } | |
9fa40276 TJB |
1829 | } |
1830 | ||
1831 | /* Change the type of breakpoint between hardware assisted or | |
1832 | an ordinary watchpoint depending on the hardware support | |
1833 | and free hardware slots. REPARSE is set when the inferior | |
1834 | is started. */ | |
a9634178 | 1835 | if (reparse) |
9fa40276 | 1836 | { |
e09342b5 | 1837 | int reg_cnt; |
9fa40276 TJB |
1838 | enum bp_loc_type loc_type; |
1839 | struct bp_location *bl; | |
a5606eee | 1840 | |
a9634178 | 1841 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1842 | |
1843 | if (reg_cnt) | |
9fa40276 TJB |
1844 | { |
1845 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1846 | enum bptype type; |
9fa40276 | 1847 | |
a9634178 TJB |
1848 | /* Use an exact watchpoint when there's only one memory region to be |
1849 | watched, and only one debug register is needed to watch it. */ | |
1850 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1851 | ||
9fa40276 | 1852 | /* We need to determine how many resources are already |
e09342b5 TJB |
1853 | used for all other hardware watchpoints plus this one |
1854 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1855 | this watchpoint in as well. */ |
1856 | ||
1857 | /* If this is a software watchpoint, we try to turn it | |
1858 | to a hardware one -- count resources as if B was of | |
1859 | hardware watchpoint type. */ | |
1860 | type = b->base.type; | |
1861 | if (type == bp_watchpoint) | |
1862 | type = bp_hardware_watchpoint; | |
1863 | ||
1864 | /* This watchpoint may or may not have been placed on | |
1865 | the list yet at this point (it won't be in the list | |
1866 | if we're trying to create it for the first time, | |
1867 | through watch_command), so always account for it | |
1868 | manually. */ | |
1869 | ||
1870 | /* Count resources used by all watchpoints except B. */ | |
1871 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1872 | ||
1873 | /* Add in the resources needed for B. */ | |
1874 | i += hw_watchpoint_use_count (&b->base); | |
1875 | ||
1876 | target_resources_ok | |
1877 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1878 | if (target_resources_ok <= 0) |
a9634178 | 1879 | { |
3a5c3e22 | 1880 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1881 | |
1882 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1883 | error (_("Target does not support this type of " |
1884 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1885 | else if (target_resources_ok < 0 && !sw_mode) |
1886 | error (_("There are not enough available hardware " | |
1887 | "resources for this watchpoint.")); | |
a1398e0c PA |
1888 | |
1889 | /* Downgrade to software watchpoint. */ | |
1890 | b->base.type = bp_watchpoint; | |
1891 | } | |
1892 | else | |
1893 | { | |
1894 | /* If this was a software watchpoint, we've just | |
1895 | found we have enough resources to turn it to a | |
1896 | hardware watchpoint. Otherwise, this is a | |
1897 | nop. */ | |
1898 | b->base.type = type; | |
a9634178 | 1899 | } |
9fa40276 | 1900 | } |
3a5c3e22 | 1901 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1902 | error (_("Expression cannot be implemented with " |
1903 | "read/access watchpoint.")); | |
9fa40276 | 1904 | else |
3a5c3e22 | 1905 | b->base.type = bp_watchpoint; |
9fa40276 | 1906 | |
3a5c3e22 | 1907 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1908 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1909 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1910 | bl->loc_type = loc_type; |
1911 | } | |
1912 | ||
1913 | for (v = val_chain; v; v = next) | |
1914 | { | |
a5606eee VP |
1915 | next = value_next (v); |
1916 | if (v != b->val) | |
1917 | value_free (v); | |
1918 | } | |
1919 | ||
c7437ca6 PA |
1920 | /* If a software watchpoint is not watching any memory, then the |
1921 | above left it without any location set up. But, | |
1922 | bpstat_stop_status requires a location to be able to report | |
1923 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1924 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1925 | { |
3a5c3e22 PA |
1926 | struct breakpoint *base = &b->base; |
1927 | base->loc = allocate_bp_location (base); | |
1928 | base->loc->pspace = frame_pspace; | |
1929 | base->loc->address = -1; | |
1930 | base->loc->length = -1; | |
1931 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1932 | } |
a5606eee VP |
1933 | } |
1934 | else if (!within_current_scope) | |
7270d8f2 | 1935 | { |
ac74f770 MS |
1936 | printf_filtered (_("\ |
1937 | Watchpoint %d deleted because the program has left the block\n\ | |
1938 | in which its expression is valid.\n"), | |
3a5c3e22 | 1939 | b->base.number); |
d0fb5eae | 1940 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1941 | } |
a5606eee VP |
1942 | |
1943 | /* Restore the selected frame. */ | |
66076460 DJ |
1944 | if (frame_saved) |
1945 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1946 | } |
1947 | ||
a5606eee | 1948 | |
74960c60 | 1949 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1950 | inserted in the inferior. We don't differentiate the type of BL's owner |
1951 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1952 | breakpoint_ops is not defined, because in insert_bp_location, | |
1953 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1954 | static int |
35df4500 | 1955 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1956 | { |
35df4500 | 1957 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1958 | return 0; |
1959 | ||
35df4500 | 1960 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1961 | return 0; |
1962 | ||
35df4500 | 1963 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1964 | return 0; |
1965 | ||
f8eba3c6 TT |
1966 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
1967 | return 0; | |
1968 | ||
56710373 PA |
1969 | /* This is set for example, when we're attached to the parent of a |
1970 | vfork, and have detached from the child. The child is running | |
1971 | free, and we expect it to do an exec or exit, at which point the | |
1972 | OS makes the parent schedulable again (and the target reports | |
1973 | that the vfork is done). Until the child is done with the shared | |
1974 | memory region, do not insert breakpoints in the parent, otherwise | |
1975 | the child could still trip on the parent's breakpoints. Since | |
1976 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1977 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1978 | return 0; |
1979 | ||
74960c60 VP |
1980 | return 1; |
1981 | } | |
1982 | ||
934709f0 PW |
1983 | /* Same as should_be_inserted but does the check assuming |
1984 | that the location is not duplicated. */ | |
1985 | ||
1986 | static int | |
1987 | unduplicated_should_be_inserted (struct bp_location *bl) | |
1988 | { | |
1989 | int result; | |
1990 | const int save_duplicate = bl->duplicate; | |
1991 | ||
1992 | bl->duplicate = 0; | |
1993 | result = should_be_inserted (bl); | |
1994 | bl->duplicate = save_duplicate; | |
1995 | return result; | |
1996 | } | |
1997 | ||
b775012e LM |
1998 | /* Parses a conditional described by an expression COND into an |
1999 | agent expression bytecode suitable for evaluation | |
2000 | by the bytecode interpreter. Return NULL if there was | |
2001 | any error during parsing. */ | |
2002 | ||
2003 | static struct agent_expr * | |
2004 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
2005 | { | |
2006 | struct agent_expr *aexpr = NULL; | |
2007 | struct cleanup *old_chain = NULL; | |
2008 | volatile struct gdb_exception ex; | |
2009 | ||
2010 | if (!cond) | |
2011 | return NULL; | |
2012 | ||
2013 | /* We don't want to stop processing, so catch any errors | |
2014 | that may show up. */ | |
2015 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2016 | { | |
2017 | aexpr = gen_eval_for_expr (scope, cond); | |
2018 | } | |
2019 | ||
2020 | if (ex.reason < 0) | |
2021 | { | |
2022 | /* If we got here, it means the condition could not be parsed to a valid | |
2023 | bytecode expression and thus can't be evaluated on the target's side. | |
2024 | It's no use iterating through the conditions. */ | |
2025 | return NULL; | |
2026 | } | |
2027 | ||
2028 | /* We have a valid agent expression. */ | |
2029 | return aexpr; | |
2030 | } | |
2031 | ||
2032 | /* Based on location BL, create a list of breakpoint conditions to be | |
2033 | passed on to the target. If we have duplicated locations with different | |
2034 | conditions, we will add such conditions to the list. The idea is that the | |
2035 | target will evaluate the list of conditions and will only notify GDB when | |
2036 | one of them is true. */ | |
2037 | ||
2038 | static void | |
2039 | build_target_condition_list (struct bp_location *bl) | |
2040 | { | |
2041 | struct bp_location **locp = NULL, **loc2p; | |
2042 | int null_condition_or_parse_error = 0; | |
2043 | int modified = bl->needs_update; | |
2044 | struct bp_location *loc; | |
2045 | ||
2046 | /* This is only meaningful if the target is | |
2047 | evaluating conditions and if the user has | |
2048 | opted for condition evaluation on the target's | |
2049 | side. */ | |
2050 | if (gdb_evaluates_breakpoint_condition_p () | |
2051 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2052 | return; | |
2053 | ||
2054 | /* Do a first pass to check for locations with no assigned | |
2055 | conditions or conditions that fail to parse to a valid agent expression | |
2056 | bytecode. If any of these happen, then it's no use to send conditions | |
2057 | to the target since this location will always trigger and generate a | |
2058 | response back to GDB. */ | |
2059 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2060 | { | |
2061 | loc = (*loc2p); | |
2062 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2063 | { | |
2064 | if (modified) | |
2065 | { | |
2066 | struct agent_expr *aexpr; | |
2067 | ||
2068 | /* Re-parse the conditions since something changed. In that | |
2069 | case we already freed the condition bytecodes (see | |
2070 | force_breakpoint_reinsertion). We just | |
2071 | need to parse the condition to bytecodes again. */ | |
2072 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2073 | loc->cond_bytecode = aexpr; | |
2074 | ||
2075 | /* Check if we managed to parse the conditional expression | |
2076 | correctly. If not, we will not send this condition | |
2077 | to the target. */ | |
2078 | if (aexpr) | |
2079 | continue; | |
2080 | } | |
2081 | ||
2082 | /* If we have a NULL bytecode expression, it means something | |
2083 | went wrong or we have a null condition expression. */ | |
2084 | if (!loc->cond_bytecode) | |
2085 | { | |
2086 | null_condition_or_parse_error = 1; | |
2087 | break; | |
2088 | } | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | /* If any of these happened, it means we will have to evaluate the conditions | |
2093 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2094 | for all the other duplicate locations, thus we free all of them here. | |
2095 | ||
2096 | This is so we have a finer control over which locations' conditions are | |
2097 | being evaluated by GDB or the remote stub. */ | |
2098 | if (null_condition_or_parse_error) | |
2099 | { | |
2100 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2101 | { | |
2102 | loc = (*loc2p); | |
2103 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2104 | { | |
2105 | /* Only go as far as the first NULL bytecode is | |
2106 | located. */ | |
2107 | if (!loc->cond_bytecode) | |
2108 | return; | |
2109 | ||
2110 | free_agent_expr (loc->cond_bytecode); | |
2111 | loc->cond_bytecode = NULL; | |
2112 | } | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2117 | for this location's address. */ | |
2118 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2119 | { | |
2120 | loc = (*loc2p); | |
2121 | if (loc->cond | |
2122 | && is_breakpoint (loc->owner) | |
2123 | && loc->pspace->num == bl->pspace->num | |
2124 | && loc->owner->enable_state == bp_enabled | |
2125 | && loc->enabled) | |
2126 | /* Add the condition to the vector. This will be used later to send the | |
2127 | conditions to the target. */ | |
2128 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2129 | loc->cond_bytecode); | |
2130 | } | |
2131 | ||
2132 | return; | |
2133 | } | |
2134 | ||
35df4500 TJB |
2135 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2136 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2137 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2138 | Returns 0 for success, 1 if the bp_location type is not supported or |
2139 | -1 for failure. | |
879bfdc2 | 2140 | |
4a64f543 MS |
2141 | NOTE drow/2003-09-09: This routine could be broken down to an |
2142 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2143 | static int |
35df4500 | 2144 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2145 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2146 | int *disabled_breaks, |
26bb91f3 | 2147 | int *hw_breakpoint_error) |
879bfdc2 DJ |
2148 | { |
2149 | int val = 0; | |
2150 | ||
b775012e | 2151 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2152 | return 0; |
2153 | ||
35c63cd8 JB |
2154 | /* Note we don't initialize bl->target_info, as that wipes out |
2155 | the breakpoint location's shadow_contents if the breakpoint | |
2156 | is still inserted at that location. This in turn breaks | |
2157 | target_read_memory which depends on these buffers when | |
2158 | a memory read is requested at the breakpoint location: | |
2159 | Once the target_info has been wiped, we fail to see that | |
2160 | we have a breakpoint inserted at that address and thus | |
2161 | read the breakpoint instead of returning the data saved in | |
2162 | the breakpoint location's shadow contents. */ | |
35df4500 TJB |
2163 | bl->target_info.placed_address = bl->address; |
2164 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 2165 | bl->target_info.length = bl->length; |
8181d85f | 2166 | |
b775012e LM |
2167 | /* When working with target-side conditions, we must pass all the conditions |
2168 | for the same breakpoint address down to the target since GDB will not | |
2169 | insert those locations. With a list of breakpoint conditions, the target | |
2170 | can decide when to stop and notify GDB. */ | |
2171 | ||
2172 | if (is_breakpoint (bl->owner)) | |
2173 | { | |
2174 | build_target_condition_list (bl); | |
2175 | /* Reset the condition modification marker. */ | |
2176 | bl->needs_update = 0; | |
2177 | } | |
2178 | ||
35df4500 TJB |
2179 | if (bl->loc_type == bp_loc_software_breakpoint |
2180 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2181 | { |
35df4500 | 2182 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2183 | { |
2184 | /* If the explicitly specified breakpoint type | |
2185 | is not hardware breakpoint, check the memory map to see | |
2186 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2187 | |
765dc015 VP |
2188 | Two important cases are: |
2189 | - location type is not hardware breakpoint, memory | |
2190 | is readonly. We change the type of the location to | |
2191 | hardware breakpoint. | |
4a64f543 MS |
2192 | - location type is hardware breakpoint, memory is |
2193 | read-write. This means we've previously made the | |
2194 | location hardware one, but then the memory map changed, | |
2195 | so we undo. | |
765dc015 | 2196 | |
4a64f543 MS |
2197 | When breakpoints are removed, remove_breakpoints will use |
2198 | location types we've just set here, the only possible | |
2199 | problem is that memory map has changed during running | |
2200 | program, but it's not going to work anyway with current | |
2201 | gdb. */ | |
765dc015 | 2202 | struct mem_region *mr |
35df4500 | 2203 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
2204 | |
2205 | if (mr) | |
2206 | { | |
2207 | if (automatic_hardware_breakpoints) | |
2208 | { | |
765dc015 VP |
2209 | enum bp_loc_type new_type; |
2210 | ||
2211 | if (mr->attrib.mode != MEM_RW) | |
2212 | new_type = bp_loc_hardware_breakpoint; | |
2213 | else | |
2214 | new_type = bp_loc_software_breakpoint; | |
2215 | ||
35df4500 | 2216 | if (new_type != bl->loc_type) |
765dc015 VP |
2217 | { |
2218 | static int said = 0; | |
cc59ec59 | 2219 | |
35df4500 | 2220 | bl->loc_type = new_type; |
765dc015 VP |
2221 | if (!said) |
2222 | { | |
3e43a32a MS |
2223 | fprintf_filtered (gdb_stdout, |
2224 | _("Note: automatically using " | |
2225 | "hardware breakpoints for " | |
2226 | "read-only addresses.\n")); | |
765dc015 VP |
2227 | said = 1; |
2228 | } | |
2229 | } | |
2230 | } | |
35df4500 | 2231 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 2232 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
2233 | warning (_("cannot set software breakpoint " |
2234 | "at readonly address %s"), | |
35df4500 | 2235 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
2236 | } |
2237 | } | |
2238 | ||
879bfdc2 DJ |
2239 | /* First check to see if we have to handle an overlay. */ |
2240 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2241 | || bl->section == NULL |
2242 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2243 | { |
2244 | /* No overlay handling: just set the breakpoint. */ | |
2245 | ||
348d480f | 2246 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
2247 | } |
2248 | else | |
2249 | { | |
4a64f543 | 2250 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2251 | Shall we set a breakpoint at the LMA? */ |
2252 | if (!overlay_events_enabled) | |
2253 | { | |
2254 | /* Yes -- overlay event support is not active, | |
2255 | so we must try to set a breakpoint at the LMA. | |
2256 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2257 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2258 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2259 | bl->owner->number); |
879bfdc2 DJ |
2260 | else |
2261 | { | |
35df4500 TJB |
2262 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2263 | bl->section); | |
879bfdc2 | 2264 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
2265 | bl->overlay_target_info = bl->target_info; |
2266 | bl->overlay_target_info.placed_address = addr; | |
2267 | val = target_insert_breakpoint (bl->gdbarch, | |
2268 | &bl->overlay_target_info); | |
879bfdc2 | 2269 | if (val != 0) |
99361f52 | 2270 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2271 | "Overlay breakpoint %d " |
2272 | "failed: in ROM?\n", | |
35df4500 | 2273 | bl->owner->number); |
879bfdc2 DJ |
2274 | } |
2275 | } | |
2276 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2277 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2278 | { |
2279 | /* Yes. This overlay section is mapped into memory. */ | |
348d480f | 2280 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
2281 | } |
2282 | else | |
2283 | { | |
2284 | /* No. This breakpoint will not be inserted. | |
2285 | No error, but do not mark the bp as 'inserted'. */ | |
2286 | return 0; | |
2287 | } | |
2288 | } | |
2289 | ||
2290 | if (val) | |
2291 | { | |
2292 | /* Can't set the breakpoint. */ | |
35df4500 | 2293 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 2294 | { |
4a64f543 | 2295 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 2296 | val = 0; |
35df4500 | 2297 | bl->shlib_disabled = 1; |
8d3788bd | 2298 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2299 | if (!*disabled_breaks) |
2300 | { | |
2301 | fprintf_unfiltered (tmp_error_stream, | |
2302 | "Cannot insert breakpoint %d.\n", | |
2303 | bl->owner->number); | |
2304 | fprintf_unfiltered (tmp_error_stream, | |
2305 | "Temporarily disabling shared " | |
2306 | "library breakpoints:\n"); | |
2307 | } | |
2308 | *disabled_breaks = 1; | |
879bfdc2 | 2309 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2310 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
2311 | } |
2312 | else | |
879bfdc2 | 2313 | { |
35df4500 | 2314 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
2315 | { |
2316 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
2317 | fprintf_unfiltered (tmp_error_stream, |
2318 | "Cannot insert hardware " | |
2319 | "breakpoint %d.\n", | |
35df4500 | 2320 | bl->owner->number); |
879bfdc2 DJ |
2321 | } |
2322 | else | |
2323 | { | |
2324 | fprintf_unfiltered (tmp_error_stream, | |
2325 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 2326 | bl->owner->number); |
879bfdc2 DJ |
2327 | fprintf_filtered (tmp_error_stream, |
2328 | "Error accessing memory address "); | |
35df4500 | 2329 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 2330 | tmp_error_stream); |
879bfdc2 DJ |
2331 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
2332 | safe_strerror (val)); | |
2333 | } | |
2334 | ||
2335 | } | |
2336 | } | |
2337 | else | |
35df4500 | 2338 | bl->inserted = 1; |
879bfdc2 DJ |
2339 | |
2340 | return val; | |
2341 | } | |
2342 | ||
35df4500 | 2343 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2344 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2345 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2346 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2347 | { |
77b06cd7 TJB |
2348 | gdb_assert (bl->owner->ops != NULL |
2349 | && bl->owner->ops->insert_location != NULL); | |
2350 | ||
2351 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2352 | |
2353 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2354 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2355 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2356 | { |
2357 | struct bp_location *loc, **loc_temp; | |
2358 | ||
2359 | /* But don't try to insert it, if there's already another | |
2360 | hw_access location that would be considered a duplicate | |
2361 | of this one. */ | |
2362 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2363 | if (loc != bl |
85d721b8 | 2364 | && loc->watchpoint_type == hw_access |
35df4500 | 2365 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2366 | { |
35df4500 TJB |
2367 | bl->duplicate = 1; |
2368 | bl->inserted = 1; | |
2369 | bl->target_info = loc->target_info; | |
2370 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2371 | val = 0; |
2372 | break; | |
2373 | } | |
2374 | ||
2375 | if (val == 1) | |
2376 | { | |
77b06cd7 TJB |
2377 | bl->watchpoint_type = hw_access; |
2378 | val = bl->owner->ops->insert_location (bl); | |
2379 | ||
2380 | if (val) | |
2381 | /* Back to the original value. */ | |
2382 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2383 | } |
2384 | } | |
2385 | ||
35df4500 | 2386 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2387 | } |
2388 | ||
35df4500 | 2389 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2390 | { |
77b06cd7 TJB |
2391 | gdb_assert (bl->owner->ops != NULL |
2392 | && bl->owner->ops->insert_location != NULL); | |
2393 | ||
2394 | val = bl->owner->ops->insert_location (bl); | |
2395 | if (val) | |
2396 | { | |
2397 | bl->owner->enable_state = bp_disabled; | |
2398 | ||
2399 | if (val == 1) | |
2400 | warning (_("\ | |
2401 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2402 | of catchpoint."), bl->owner->number); | |
2403 | else | |
2404 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2405 | } | |
2406 | ||
2407 | bl->inserted = (val == 0); | |
1640b821 DJ |
2408 | |
2409 | /* We've already printed an error message if there was a problem | |
2410 | inserting this catchpoint, and we've disabled the catchpoint, | |
2411 | so just return success. */ | |
2412 | return 0; | |
879bfdc2 DJ |
2413 | } |
2414 | ||
2415 | return 0; | |
2416 | } | |
2417 | ||
6c95b8df PA |
2418 | /* This function is called when program space PSPACE is about to be |
2419 | deleted. It takes care of updating breakpoints to not reference | |
2420 | PSPACE anymore. */ | |
2421 | ||
2422 | void | |
2423 | breakpoint_program_space_exit (struct program_space *pspace) | |
2424 | { | |
2425 | struct breakpoint *b, *b_temp; | |
876fa593 | 2426 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2427 | |
2428 | /* Remove any breakpoint that was set through this program space. */ | |
2429 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2430 | { | |
2431 | if (b->pspace == pspace) | |
2432 | delete_breakpoint (b); | |
2433 | } | |
2434 | ||
2435 | /* Breakpoints set through other program spaces could have locations | |
2436 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2437 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2438 | { |
2439 | struct bp_location *tmp; | |
2440 | ||
2441 | if (loc->pspace == pspace) | |
2442 | { | |
2bdf28a0 | 2443 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2444 | if (loc->owner->loc == loc) |
2445 | loc->owner->loc = loc->next; | |
2446 | else | |
2447 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2448 | if (tmp->next == loc) | |
2449 | { | |
2450 | tmp->next = loc->next; | |
2451 | break; | |
2452 | } | |
2453 | } | |
2454 | } | |
2455 | ||
2456 | /* Now update the global location list to permanently delete the | |
2457 | removed locations above. */ | |
2458 | update_global_location_list (0); | |
2459 | } | |
2460 | ||
74960c60 VP |
2461 | /* Make sure all breakpoints are inserted in inferior. |
2462 | Throws exception on any error. | |
2463 | A breakpoint that is already inserted won't be inserted | |
2464 | again, so calling this function twice is safe. */ | |
2465 | void | |
2466 | insert_breakpoints (void) | |
2467 | { | |
2468 | struct breakpoint *bpt; | |
2469 | ||
2470 | ALL_BREAKPOINTS (bpt) | |
2471 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2472 | { |
2473 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2474 | ||
2475 | update_watchpoint (w, 0 /* don't reparse. */); | |
2476 | } | |
74960c60 | 2477 | |
b60e7edf | 2478 | update_global_location_list (1); |
74960c60 | 2479 | |
c35b1492 PA |
2480 | /* update_global_location_list does not insert breakpoints when |
2481 | always_inserted_mode is not enabled. Explicitly insert them | |
2482 | now. */ | |
2483 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
2484 | insert_breakpoint_locations (); |
2485 | } | |
2486 | ||
20388dd6 YQ |
2487 | /* Invoke CALLBACK for each of bp_location. */ |
2488 | ||
2489 | void | |
2490 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2491 | { | |
2492 | struct bp_location *loc, **loc_tmp; | |
2493 | ||
2494 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2495 | { | |
2496 | callback (loc, NULL); | |
2497 | } | |
2498 | } | |
2499 | ||
b775012e LM |
2500 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2501 | target. It is the case with deleting and disabling of breakpoints when using | |
2502 | always-inserted mode. */ | |
2503 | ||
2504 | static void | |
2505 | update_inserted_breakpoint_locations (void) | |
2506 | { | |
2507 | struct bp_location *bl, **blp_tmp; | |
2508 | int error_flag = 0; | |
2509 | int val = 0; | |
2510 | int disabled_breaks = 0; | |
2511 | int hw_breakpoint_error = 0; | |
2512 | ||
2513 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
2514 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
2515 | ||
2516 | /* Explicitly mark the warning -- this will only be printed if | |
2517 | there was an error. */ | |
2518 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
2519 | ||
2520 | save_current_space_and_thread (); | |
2521 | ||
2522 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2523 | { | |
2524 | /* We only want to update software breakpoints and hardware | |
2525 | breakpoints. */ | |
2526 | if (!is_breakpoint (bl->owner)) | |
2527 | continue; | |
2528 | ||
2529 | /* We only want to update locations that are already inserted | |
2530 | and need updating. This is to avoid unwanted insertion during | |
2531 | deletion of breakpoints. */ | |
2532 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2533 | continue; | |
2534 | ||
2535 | switch_to_program_space_and_thread (bl->pspace); | |
2536 | ||
2537 | /* For targets that support global breakpoints, there's no need | |
2538 | to select an inferior to insert breakpoint to. In fact, even | |
2539 | if we aren't attached to any process yet, we should still | |
2540 | insert breakpoints. */ | |
2541 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2542 | && ptid_equal (inferior_ptid, null_ptid)) | |
2543 | continue; | |
2544 | ||
2545 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
2546 | &hw_breakpoint_error); | |
2547 | if (val) | |
2548 | error_flag = val; | |
2549 | } | |
2550 | ||
2551 | if (error_flag) | |
2552 | { | |
2553 | target_terminal_ours_for_output (); | |
2554 | error_stream (tmp_error_stream); | |
2555 | } | |
2556 | ||
2557 | do_cleanups (cleanups); | |
2558 | } | |
2559 | ||
c30eee59 | 2560 | /* Used when starting or continuing the program. */ |
c906108c | 2561 | |
74960c60 VP |
2562 | static void |
2563 | insert_breakpoint_locations (void) | |
c906108c | 2564 | { |
a5606eee | 2565 | struct breakpoint *bpt; |
35df4500 | 2566 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2567 | int error_flag = 0; |
c906108c | 2568 | int val = 0; |
3fbb6ffa | 2569 | int disabled_breaks = 0; |
81d0cc19 | 2570 | int hw_breakpoint_error = 0; |
c906108c | 2571 | |
81d0cc19 | 2572 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 2573 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 2574 | |
81d0cc19 GS |
2575 | /* Explicitly mark the warning -- this will only be printed if |
2576 | there was an error. */ | |
2577 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
2578 | |
2579 | save_current_space_and_thread (); | |
2580 | ||
35df4500 | 2581 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2582 | { |
b775012e | 2583 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2584 | continue; |
2585 | ||
4a64f543 MS |
2586 | /* There is no point inserting thread-specific breakpoints if |
2587 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2588 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
2589 | if (bl->owner->thread != -1 |
2590 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2591 | continue; |
2592 | ||
35df4500 | 2593 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2594 | |
2595 | /* For targets that support global breakpoints, there's no need | |
2596 | to select an inferior to insert breakpoint to. In fact, even | |
2597 | if we aren't attached to any process yet, we should still | |
2598 | insert breakpoints. */ | |
2599 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2600 | && ptid_equal (inferior_ptid, null_ptid)) | |
2601 | continue; | |
2602 | ||
3fbb6ffa TJB |
2603 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
2604 | &hw_breakpoint_error); | |
879bfdc2 | 2605 | if (val) |
eacd795a | 2606 | error_flag = val; |
879bfdc2 | 2607 | } |
c906108c | 2608 | |
4a64f543 MS |
2609 | /* If we failed to insert all locations of a watchpoint, remove |
2610 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2611 | ALL_BREAKPOINTS (bpt) |
2612 | { | |
2613 | int some_failed = 0; | |
2614 | struct bp_location *loc; | |
2615 | ||
2616 | if (!is_hardware_watchpoint (bpt)) | |
2617 | continue; | |
2618 | ||
d6b74ac4 | 2619 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2620 | continue; |
74960c60 VP |
2621 | |
2622 | if (bpt->disposition == disp_del_at_next_stop) | |
2623 | continue; | |
a5606eee VP |
2624 | |
2625 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2626 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2627 | { |
2628 | some_failed = 1; | |
2629 | break; | |
2630 | } | |
2631 | if (some_failed) | |
2632 | { | |
2633 | for (loc = bpt->loc; loc; loc = loc->next) | |
2634 | if (loc->inserted) | |
2635 | remove_breakpoint (loc, mark_uninserted); | |
2636 | ||
2637 | hw_breakpoint_error = 1; | |
2638 | fprintf_unfiltered (tmp_error_stream, | |
2639 | "Could not insert hardware watchpoint %d.\n", | |
2640 | bpt->number); | |
eacd795a | 2641 | error_flag = -1; |
a5606eee VP |
2642 | } |
2643 | } | |
2644 | ||
eacd795a | 2645 | if (error_flag) |
81d0cc19 GS |
2646 | { |
2647 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2648 | message about possibly exhausted resources. */ | |
879bfdc2 | 2649 | if (hw_breakpoint_error) |
81d0cc19 | 2650 | { |
c6510018 MS |
2651 | fprintf_unfiltered (tmp_error_stream, |
2652 | "Could not insert hardware breakpoints:\n\ | |
2653 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2654 | } |
81d0cc19 GS |
2655 | target_terminal_ours_for_output (); |
2656 | error_stream (tmp_error_stream); | |
2657 | } | |
f7545552 TT |
2658 | |
2659 | do_cleanups (cleanups); | |
c906108c SS |
2660 | } |
2661 | ||
c30eee59 TJB |
2662 | /* Used when the program stops. |
2663 | Returns zero if successful, or non-zero if there was a problem | |
2664 | removing a breakpoint location. */ | |
2665 | ||
c906108c | 2666 | int |
fba45db2 | 2667 | remove_breakpoints (void) |
c906108c | 2668 | { |
35df4500 | 2669 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2670 | int val = 0; |
c906108c | 2671 | |
35df4500 | 2672 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2673 | { |
1e4d1764 | 2674 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2675 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2676 | } |
3a1bae8e | 2677 | return val; |
c906108c SS |
2678 | } |
2679 | ||
6c95b8df PA |
2680 | /* Remove breakpoints of process PID. */ |
2681 | ||
2682 | int | |
2683 | remove_breakpoints_pid (int pid) | |
2684 | { | |
35df4500 | 2685 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2686 | int val; |
2687 | struct inferior *inf = find_inferior_pid (pid); | |
2688 | ||
35df4500 | 2689 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2690 | { |
35df4500 | 2691 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2692 | continue; |
2693 | ||
35df4500 | 2694 | if (bl->inserted) |
6c95b8df | 2695 | { |
35df4500 | 2696 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2697 | if (val != 0) |
2698 | return val; | |
2699 | } | |
2700 | } | |
2701 | return 0; | |
2702 | } | |
2703 | ||
c906108c | 2704 | int |
fba45db2 | 2705 | reattach_breakpoints (int pid) |
c906108c | 2706 | { |
6c95b8df | 2707 | struct cleanup *old_chain; |
35df4500 | 2708 | struct bp_location *bl, **blp_tmp; |
c906108c | 2709 | int val; |
86b887df | 2710 | struct ui_file *tmp_error_stream; |
3fbb6ffa | 2711 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2712 | struct inferior *inf; |
2713 | struct thread_info *tp; | |
2714 | ||
2715 | tp = any_live_thread_of_process (pid); | |
2716 | if (tp == NULL) | |
2717 | return 1; | |
2718 | ||
2719 | inf = find_inferior_pid (pid); | |
2720 | old_chain = save_inferior_ptid (); | |
2721 | ||
2722 | inferior_ptid = tp->ptid; | |
a4954f26 | 2723 | |
86b887df | 2724 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2725 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2726 | |
35df4500 | 2727 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2728 | { |
35df4500 | 2729 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2730 | continue; |
2731 | ||
35df4500 | 2732 | if (bl->inserted) |
c5aa993b | 2733 | { |
35df4500 | 2734 | bl->inserted = 0; |
3fbb6ffa | 2735 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); |
c5aa993b JM |
2736 | if (val != 0) |
2737 | { | |
ce696e05 | 2738 | do_cleanups (old_chain); |
c5aa993b JM |
2739 | return val; |
2740 | } | |
2741 | } | |
2742 | } | |
ce696e05 | 2743 | do_cleanups (old_chain); |
c906108c SS |
2744 | return 0; |
2745 | } | |
2746 | ||
e58b0e63 PA |
2747 | static int internal_breakpoint_number = -1; |
2748 | ||
84f4c1fe PM |
2749 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2750 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2751 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 2752 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
2753 | breakpoint_count and that value incremented. Internal breakpoints |
2754 | do not set the internal var bpnum. */ | |
2755 | static void | |
2756 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2757 | { | |
2758 | if (internal) | |
2759 | b->number = internal_breakpoint_number--; | |
2760 | else | |
2761 | { | |
2762 | set_breakpoint_count (breakpoint_count + 1); | |
2763 | b->number = breakpoint_count; | |
2764 | } | |
2765 | } | |
2766 | ||
e62c965a | 2767 | static struct breakpoint * |
a6d9a66e | 2768 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 2769 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 2770 | const struct breakpoint_ops *ops) |
e62c965a | 2771 | { |
e62c965a PP |
2772 | struct symtab_and_line sal; |
2773 | struct breakpoint *b; | |
2774 | ||
4a64f543 | 2775 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2776 | |
2777 | sal.pc = address; | |
2778 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2779 | sal.pspace = current_program_space; |
e62c965a | 2780 | |
06edf0c0 | 2781 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
2782 | b->number = internal_breakpoint_number--; |
2783 | b->disposition = disp_donttouch; | |
2784 | ||
2785 | return b; | |
2786 | } | |
2787 | ||
17450429 PP |
2788 | static const char *const longjmp_names[] = |
2789 | { | |
2790 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2791 | }; | |
2792 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2793 | ||
2794 | /* Per-objfile data private to breakpoint.c. */ | |
2795 | struct breakpoint_objfile_data | |
2796 | { | |
2797 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2798 | struct minimal_symbol *overlay_msym; | |
2799 | ||
2800 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2801 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2802 | ||
28106bc2 SDJ |
2803 | /* True if we have looked for longjmp probes. */ |
2804 | int longjmp_searched; | |
2805 | ||
2806 | /* SystemTap probe points for longjmp (if any). */ | |
2807 | VEC (probe_p) *longjmp_probes; | |
2808 | ||
17450429 PP |
2809 | /* Minimal symbol for "std::terminate()" (if any). */ |
2810 | struct minimal_symbol *terminate_msym; | |
2811 | ||
2812 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2813 | struct minimal_symbol *exception_msym; | |
28106bc2 SDJ |
2814 | |
2815 | /* True if we have looked for exception probes. */ | |
2816 | int exception_searched; | |
2817 | ||
2818 | /* SystemTap probe points for unwinding (if any). */ | |
2819 | VEC (probe_p) *exception_probes; | |
17450429 PP |
2820 | }; |
2821 | ||
2822 | static const struct objfile_data *breakpoint_objfile_key; | |
2823 | ||
2824 | /* Minimal symbol not found sentinel. */ | |
2825 | static struct minimal_symbol msym_not_found; | |
2826 | ||
2827 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2828 | ||
2829 | static int | |
2830 | msym_not_found_p (const struct minimal_symbol *msym) | |
2831 | { | |
2832 | return msym == &msym_not_found; | |
2833 | } | |
2834 | ||
2835 | /* Return per-objfile data needed by breakpoint.c. | |
2836 | Allocate the data if necessary. */ | |
2837 | ||
2838 | static struct breakpoint_objfile_data * | |
2839 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2840 | { | |
2841 | struct breakpoint_objfile_data *bp_objfile_data; | |
2842 | ||
2843 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2844 | if (bp_objfile_data == NULL) | |
2845 | { | |
2846 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2847 | sizeof (*bp_objfile_data)); | |
2848 | ||
2849 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2850 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2851 | } | |
2852 | return bp_objfile_data; | |
2853 | } | |
2854 | ||
28106bc2 SDJ |
2855 | static void |
2856 | free_breakpoint_probes (struct objfile *obj, void *data) | |
2857 | { | |
2858 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
2859 | ||
2860 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
2861 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
2862 | } | |
2863 | ||
e62c965a | 2864 | static void |
af02033e | 2865 | create_overlay_event_breakpoint (void) |
e62c965a | 2866 | { |
69de3c6a | 2867 | struct objfile *objfile; |
af02033e | 2868 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2869 | |
69de3c6a PP |
2870 | ALL_OBJFILES (objfile) |
2871 | { | |
2872 | struct breakpoint *b; | |
17450429 PP |
2873 | struct breakpoint_objfile_data *bp_objfile_data; |
2874 | CORE_ADDR addr; | |
69de3c6a | 2875 | |
17450429 PP |
2876 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2877 | ||
2878 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2879 | continue; | |
2880 | ||
2881 | if (bp_objfile_data->overlay_msym == NULL) | |
2882 | { | |
2883 | struct minimal_symbol *m; | |
2884 | ||
2885 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2886 | if (m == NULL) | |
2887 | { | |
2888 | /* Avoid future lookups in this objfile. */ | |
2889 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2890 | continue; | |
2891 | } | |
2892 | bp_objfile_data->overlay_msym = m; | |
2893 | } | |
e62c965a | 2894 | |
17450429 PP |
2895 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2896 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2897 | bp_overlay_event, |
2898 | &internal_breakpoint_ops); | |
69de3c6a | 2899 | b->addr_string = xstrdup (func_name); |
e62c965a | 2900 | |
69de3c6a PP |
2901 | if (overlay_debugging == ovly_auto) |
2902 | { | |
2903 | b->enable_state = bp_enabled; | |
2904 | overlay_events_enabled = 1; | |
2905 | } | |
2906 | else | |
2907 | { | |
2908 | b->enable_state = bp_disabled; | |
2909 | overlay_events_enabled = 0; | |
2910 | } | |
e62c965a PP |
2911 | } |
2912 | update_global_location_list (1); | |
2913 | } | |
2914 | ||
0fd8e87f | 2915 | static void |
af02033e | 2916 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2917 | { |
6c95b8df | 2918 | struct program_space *pspace; |
6c95b8df PA |
2919 | struct cleanup *old_chain; |
2920 | ||
2921 | old_chain = save_current_program_space (); | |
0fd8e87f | 2922 | |
6c95b8df | 2923 | ALL_PSPACES (pspace) |
af02033e PP |
2924 | { |
2925 | struct objfile *objfile; | |
2926 | ||
2927 | set_current_program_space (pspace); | |
2928 | ||
2929 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2930 | { |
af02033e PP |
2931 | int i; |
2932 | struct gdbarch *gdbarch; | |
17450429 | 2933 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2934 | |
af02033e PP |
2935 | gdbarch = get_objfile_arch (objfile); |
2936 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2937 | continue; |
2938 | ||
17450429 PP |
2939 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2940 | ||
28106bc2 SDJ |
2941 | if (!bp_objfile_data->longjmp_searched) |
2942 | { | |
2943 | bp_objfile_data->longjmp_probes | |
2944 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
2945 | bp_objfile_data->longjmp_searched = 1; | |
2946 | } | |
2947 | ||
2948 | if (bp_objfile_data->longjmp_probes != NULL) | |
2949 | { | |
2950 | int i; | |
2951 | struct probe *probe; | |
2952 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
2953 | ||
2954 | for (i = 0; | |
2955 | VEC_iterate (probe_p, | |
2956 | bp_objfile_data->longjmp_probes, | |
2957 | i, probe); | |
2958 | ++i) | |
2959 | { | |
2960 | struct breakpoint *b; | |
2961 | ||
2962 | b = create_internal_breakpoint (gdbarch, probe->address, | |
2963 | bp_longjmp_master, | |
2964 | &internal_breakpoint_ops); | |
2965 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
2966 | b->enable_state = bp_disabled; | |
2967 | } | |
2968 | ||
2969 | continue; | |
2970 | } | |
2971 | ||
17450429 | 2972 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
2973 | { |
2974 | struct breakpoint *b; | |
af02033e | 2975 | const char *func_name; |
17450429 | 2976 | CORE_ADDR addr; |
6c95b8df | 2977 | |
17450429 | 2978 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2979 | continue; |
0fd8e87f | 2980 | |
17450429 PP |
2981 | func_name = longjmp_names[i]; |
2982 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2983 | { | |
2984 | struct minimal_symbol *m; | |
2985 | ||
2986 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2987 | if (m == NULL) | |
2988 | { | |
2989 | /* Prevent future lookups in this objfile. */ | |
2990 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2991 | continue; | |
2992 | } | |
2993 | bp_objfile_data->longjmp_msym[i] = m; | |
2994 | } | |
2995 | ||
2996 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
2997 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
2998 | &internal_breakpoint_ops); | |
af02033e PP |
2999 | b->addr_string = xstrdup (func_name); |
3000 | b->enable_state = bp_disabled; | |
3001 | } | |
0fd8e87f | 3002 | } |
af02033e | 3003 | } |
0fd8e87f | 3004 | update_global_location_list (1); |
6c95b8df PA |
3005 | |
3006 | do_cleanups (old_chain); | |
0fd8e87f UW |
3007 | } |
3008 | ||
af02033e | 3009 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3010 | static void |
af02033e | 3011 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3012 | { |
3013 | struct program_space *pspace; | |
aa7d318d | 3014 | struct cleanup *old_chain; |
af02033e | 3015 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3016 | |
3017 | old_chain = save_current_program_space (); | |
3018 | ||
3019 | ALL_PSPACES (pspace) | |
17450429 PP |
3020 | { |
3021 | struct objfile *objfile; | |
3022 | CORE_ADDR addr; | |
3023 | ||
3024 | set_current_program_space (pspace); | |
3025 | ||
aa7d318d TT |
3026 | ALL_OBJFILES (objfile) |
3027 | { | |
3028 | struct breakpoint *b; | |
17450429 | 3029 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 3030 | |
17450429 | 3031 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3032 | |
17450429 PP |
3033 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
3034 | continue; | |
3035 | ||
3036 | if (bp_objfile_data->terminate_msym == NULL) | |
3037 | { | |
3038 | struct minimal_symbol *m; | |
3039 | ||
3040 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3041 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
3042 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
3043 | { | |
3044 | /* Prevent future lookups in this objfile. */ | |
3045 | bp_objfile_data->terminate_msym = &msym_not_found; | |
3046 | continue; | |
3047 | } | |
3048 | bp_objfile_data->terminate_msym = m; | |
3049 | } | |
aa7d318d | 3050 | |
17450429 PP |
3051 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3052 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3053 | bp_std_terminate_master, |
3054 | &internal_breakpoint_ops); | |
aa7d318d TT |
3055 | b->addr_string = xstrdup (func_name); |
3056 | b->enable_state = bp_disabled; | |
3057 | } | |
17450429 PP |
3058 | } |
3059 | ||
aa7d318d TT |
3060 | update_global_location_list (1); |
3061 | ||
3062 | do_cleanups (old_chain); | |
3063 | } | |
3064 | ||
186c406b TT |
3065 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3066 | ||
70221824 | 3067 | static void |
186c406b TT |
3068 | create_exception_master_breakpoint (void) |
3069 | { | |
3070 | struct objfile *objfile; | |
17450429 | 3071 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3072 | |
3073 | ALL_OBJFILES (objfile) | |
3074 | { | |
17450429 PP |
3075 | struct breakpoint *b; |
3076 | struct gdbarch *gdbarch; | |
3077 | struct breakpoint_objfile_data *bp_objfile_data; | |
3078 | CORE_ADDR addr; | |
3079 | ||
3080 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3081 | ||
28106bc2 SDJ |
3082 | /* We prefer the SystemTap probe point if it exists. */ |
3083 | if (!bp_objfile_data->exception_searched) | |
3084 | { | |
3085 | bp_objfile_data->exception_probes | |
3086 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3087 | bp_objfile_data->exception_searched = 1; | |
3088 | } | |
3089 | ||
3090 | if (bp_objfile_data->exception_probes != NULL) | |
3091 | { | |
3092 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3093 | int i; | |
3094 | struct probe *probe; | |
3095 | ||
3096 | for (i = 0; | |
3097 | VEC_iterate (probe_p, | |
3098 | bp_objfile_data->exception_probes, | |
3099 | i, probe); | |
3100 | ++i) | |
3101 | { | |
3102 | struct breakpoint *b; | |
3103 | ||
3104 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3105 | bp_exception_master, | |
3106 | &internal_breakpoint_ops); | |
3107 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3108 | b->enable_state = bp_disabled; | |
3109 | } | |
3110 | ||
3111 | continue; | |
3112 | } | |
3113 | ||
3114 | /* Otherwise, try the hook function. */ | |
3115 | ||
17450429 PP |
3116 | if (msym_not_found_p (bp_objfile_data->exception_msym)) |
3117 | continue; | |
3118 | ||
3119 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3120 | |
17450429 | 3121 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 3122 | { |
17450429 | 3123 | struct minimal_symbol *debug_hook; |
186c406b | 3124 | |
17450429 PP |
3125 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3126 | if (debug_hook == NULL) | |
3127 | { | |
3128 | bp_objfile_data->exception_msym = &msym_not_found; | |
3129 | continue; | |
3130 | } | |
3131 | ||
3132 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3133 | } |
17450429 PP |
3134 | |
3135 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
3136 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
3137 | ¤t_target); | |
06edf0c0 PA |
3138 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3139 | &internal_breakpoint_ops); | |
17450429 PP |
3140 | b->addr_string = xstrdup (func_name); |
3141 | b->enable_state = bp_disabled; | |
186c406b TT |
3142 | } |
3143 | ||
3144 | update_global_location_list (1); | |
3145 | } | |
3146 | ||
c906108c | 3147 | void |
fba45db2 | 3148 | update_breakpoints_after_exec (void) |
c906108c | 3149 | { |
35df4500 | 3150 | struct breakpoint *b, *b_tmp; |
876fa593 | 3151 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3152 | |
25b22b0a PA |
3153 | /* We're about to delete breakpoints from GDB's lists. If the |
3154 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3155 | writing the breakpoints' "shadow contents" back into memory. The | |
3156 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3157 | do that. Instead, the target is responsible from marking | |
3158 | breakpoints out as soon as it detects an exec. We don't do that | |
3159 | here instead, because there may be other attempts to delete | |
3160 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3161 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3162 | if (bploc->pspace == current_program_space) |
3163 | gdb_assert (!bploc->inserted); | |
c906108c | 3164 | |
35df4500 | 3165 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3166 | { |
6c95b8df PA |
3167 | if (b->pspace != current_program_space) |
3168 | continue; | |
3169 | ||
4a64f543 | 3170 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3171 | if (b->type == bp_shlib_event) |
3172 | { | |
3173 | delete_breakpoint (b); | |
3174 | continue; | |
3175 | } | |
c906108c | 3176 | |
4a64f543 | 3177 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3178 | if (b->type == bp_jit_event) |
3179 | { | |
3180 | delete_breakpoint (b); | |
3181 | continue; | |
3182 | } | |
3183 | ||
1900040c | 3184 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3185 | as must overlay event and longjmp master breakpoints. */ |
3186 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3187 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3188 | || b->type == bp_exception_master) | |
c4093a6a JM |
3189 | { |
3190 | delete_breakpoint (b); | |
3191 | continue; | |
3192 | } | |
3193 | ||
4a64f543 | 3194 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3195 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3196 | { |
3197 | delete_breakpoint (b); | |
3198 | continue; | |
3199 | } | |
3200 | ||
611c83ae PA |
3201 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3202 | after an exec. */ | |
186c406b | 3203 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3204 | || b->type == bp_longjmp_call_dummy |
186c406b | 3205 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3206 | { |
3207 | delete_breakpoint (b); | |
3208 | continue; | |
3209 | } | |
3210 | ||
ce78b96d JB |
3211 | if (b->type == bp_catchpoint) |
3212 | { | |
3213 | /* For now, none of the bp_catchpoint breakpoints need to | |
3214 | do anything at this point. In the future, if some of | |
3215 | the catchpoints need to something, we will need to add | |
3216 | a new method, and call this method from here. */ | |
3217 | continue; | |
3218 | } | |
3219 | ||
c5aa993b JM |
3220 | /* bp_finish is a special case. The only way we ought to be able |
3221 | to see one of these when an exec() has happened, is if the user | |
3222 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3223 | carries them to the call-site of the current callee, by setting | |
3224 | a temporary bp there and resuming. But in this case, the finish | |
3225 | will carry them entirely through the vfork & exec. | |
3226 | ||
3227 | We don't want to allow a bp_finish to remain inserted now. But | |
3228 | we can't safely delete it, 'cause finish_command has a handle to | |
3229 | the bp on a bpstat, and will later want to delete it. There's a | |
3230 | chance (and I've seen it happen) that if we delete the bp_finish | |
3231 | here, that its storage will get reused by the time finish_command | |
3232 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3233 | We really must allow finish_command to delete a bp_finish. | |
3234 | ||
e5dd4106 | 3235 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3236 | it's safe to delete something others may have handles to?" |
3237 | problem, what we'll do here is just uninsert the bp_finish, and | |
3238 | let finish_command delete it. | |
3239 | ||
3240 | (We know the bp_finish is "doomed" in the sense that it's | |
3241 | momentary, and will be deleted as soon as finish_command sees | |
3242 | the inferior stopped. So it doesn't matter that the bp's | |
3243 | address is probably bogus in the new a.out, unlike e.g., the | |
3244 | solib breakpoints.) */ | |
c5aa993b | 3245 | |
c5aa993b JM |
3246 | if (b->type == bp_finish) |
3247 | { | |
3248 | continue; | |
3249 | } | |
3250 | ||
3251 | /* Without a symbolic address, we have little hope of the | |
3252 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3253 | a.out. */ |
c5aa993b JM |
3254 | if (b->addr_string == NULL) |
3255 | { | |
3256 | delete_breakpoint (b); | |
3257 | continue; | |
3258 | } | |
c5aa993b | 3259 | } |
1900040c | 3260 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
3261 | create_overlay_event_breakpoint (); |
3262 | create_longjmp_master_breakpoint (); | |
3263 | create_std_terminate_master_breakpoint (); | |
186c406b | 3264 | create_exception_master_breakpoint (); |
c906108c SS |
3265 | } |
3266 | ||
3267 | int | |
fba45db2 | 3268 | detach_breakpoints (int pid) |
c906108c | 3269 | { |
35df4500 | 3270 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3271 | int val = 0; |
ce696e05 | 3272 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3273 | struct inferior *inf = current_inferior (); |
c5aa993b | 3274 | |
39f77062 | 3275 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 3276 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3277 | |
6c95b8df | 3278 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 3279 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 3280 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3281 | { |
35df4500 | 3282 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3283 | continue; |
3284 | ||
35df4500 TJB |
3285 | if (bl->inserted) |
3286 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3287 | } |
d03285ec UW |
3288 | |
3289 | /* Detach single-step breakpoints as well. */ | |
3290 | detach_single_step_breakpoints (); | |
3291 | ||
ce696e05 | 3292 | do_cleanups (old_chain); |
3a1bae8e | 3293 | return val; |
c906108c SS |
3294 | } |
3295 | ||
35df4500 | 3296 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3297 | Note that this is used to detach breakpoints from a child fork. |
3298 | When we get here, the child isn't in the inferior list, and neither | |
3299 | do we have objects to represent its address space --- we should | |
35df4500 | 3300 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3301 | |
c906108c | 3302 | static int |
35df4500 | 3303 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3304 | { |
3305 | int val; | |
c5aa993b | 3306 | |
35df4500 TJB |
3307 | /* BL is never in moribund_locations by our callers. */ |
3308 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3309 | |
35df4500 | 3310 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3311 | /* Permanent breakpoints cannot be inserted or removed. */ |
3312 | return 0; | |
3313 | ||
74960c60 VP |
3314 | /* The type of none suggests that owner is actually deleted. |
3315 | This should not ever happen. */ | |
35df4500 | 3316 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3317 | |
35df4500 TJB |
3318 | if (bl->loc_type == bp_loc_software_breakpoint |
3319 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3320 | { |
c02f5703 MS |
3321 | /* "Normal" instruction breakpoint: either the standard |
3322 | trap-instruction bp (bp_breakpoint), or a | |
3323 | bp_hardware_breakpoint. */ | |
3324 | ||
3325 | /* First check to see if we have to handle an overlay. */ | |
3326 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3327 | || bl->section == NULL |
3328 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3329 | { |
3330 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 3331 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 3332 | } |
c906108c SS |
3333 | else |
3334 | { | |
4a64f543 | 3335 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3336 | Did we set a breakpoint at the LMA? */ |
3337 | if (!overlay_events_enabled) | |
3338 | { | |
3339 | /* Yes -- overlay event support is not active, so we | |
3340 | should have set a breakpoint at the LMA. Remove it. | |
3341 | */ | |
c02f5703 MS |
3342 | /* Ignore any failures: if the LMA is in ROM, we will |
3343 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3344 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3345 | target_remove_hw_breakpoint (bl->gdbarch, | |
3346 | &bl->overlay_target_info); | |
c02f5703 | 3347 | else |
35df4500 TJB |
3348 | target_remove_breakpoint (bl->gdbarch, |
3349 | &bl->overlay_target_info); | |
c02f5703 MS |
3350 | } |
3351 | /* Did we set a breakpoint at the VMA? | |
3352 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3353 | if (bl->inserted) |
c906108c | 3354 | { |
c02f5703 MS |
3355 | /* Yes -- remove it. Previously we did not bother to |
3356 | remove the breakpoint if the section had been | |
3357 | unmapped, but let's not rely on that being safe. We | |
3358 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3359 | |
3360 | /* However, we should remove *software* breakpoints only | |
3361 | if the section is still mapped, or else we overwrite | |
3362 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3363 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3364 | || section_is_mapped (bl->section)) | |
3365 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3366 | else |
3367 | val = 0; | |
c906108c | 3368 | } |
c02f5703 MS |
3369 | else |
3370 | { | |
3371 | /* No -- not inserted, so no need to remove. No error. */ | |
3372 | val = 0; | |
3373 | } | |
c906108c | 3374 | } |
879d1e6b UW |
3375 | |
3376 | /* In some cases, we might not be able to remove a breakpoint | |
3377 | in a shared library that has already been removed, but we | |
3378 | have not yet processed the shlib unload event. */ | |
35df4500 | 3379 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
3380 | val = 0; |
3381 | ||
c906108c SS |
3382 | if (val) |
3383 | return val; | |
35df4500 | 3384 | bl->inserted = (is == mark_inserted); |
c906108c | 3385 | } |
35df4500 | 3386 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3387 | { |
77b06cd7 TJB |
3388 | gdb_assert (bl->owner->ops != NULL |
3389 | && bl->owner->ops->remove_location != NULL); | |
3390 | ||
35df4500 | 3391 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 3392 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 3393 | |
c906108c | 3394 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 3395 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 3396 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3397 | bl->owner->number); |
c906108c | 3398 | } |
35df4500 TJB |
3399 | else if (bl->owner->type == bp_catchpoint |
3400 | && breakpoint_enabled (bl->owner) | |
3401 | && !bl->duplicate) | |
ce78b96d | 3402 | { |
77b06cd7 TJB |
3403 | gdb_assert (bl->owner->ops != NULL |
3404 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3405 | |
77b06cd7 | 3406 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
3407 | if (val) |
3408 | return val; | |
77b06cd7 | 3409 | |
35df4500 | 3410 | bl->inserted = (is == mark_inserted); |
ce78b96d | 3411 | } |
c906108c SS |
3412 | |
3413 | return 0; | |
3414 | } | |
3415 | ||
6c95b8df | 3416 | static int |
35df4500 | 3417 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
3418 | { |
3419 | int ret; | |
3420 | struct cleanup *old_chain; | |
3421 | ||
35df4500 TJB |
3422 | /* BL is never in moribund_locations by our callers. */ |
3423 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3424 | |
35df4500 | 3425 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
3426 | /* Permanent breakpoints cannot be inserted or removed. */ |
3427 | return 0; | |
3428 | ||
3429 | /* The type of none suggests that owner is actually deleted. | |
3430 | This should not ever happen. */ | |
35df4500 | 3431 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
3432 | |
3433 | old_chain = save_current_space_and_thread (); | |
3434 | ||
35df4500 | 3435 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3436 | |
35df4500 | 3437 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
3438 | |
3439 | do_cleanups (old_chain); | |
3440 | return ret; | |
3441 | } | |
3442 | ||
c906108c SS |
3443 | /* Clear the "inserted" flag in all breakpoints. */ |
3444 | ||
25b22b0a | 3445 | void |
fba45db2 | 3446 | mark_breakpoints_out (void) |
c906108c | 3447 | { |
35df4500 | 3448 | struct bp_location *bl, **blp_tmp; |
c906108c | 3449 | |
35df4500 TJB |
3450 | ALL_BP_LOCATIONS (bl, blp_tmp) |
3451 | if (bl->pspace == current_program_space) | |
3452 | bl->inserted = 0; | |
c906108c SS |
3453 | } |
3454 | ||
53a5351d JM |
3455 | /* Clear the "inserted" flag in all breakpoints and delete any |
3456 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3457 | |
3458 | Plus other such housekeeping that has to be done for breakpoints | |
3459 | between runs. | |
3460 | ||
53a5351d JM |
3461 | Note: this function gets called at the end of a run (by |
3462 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3463 | init_wait_for_inferior). */ |
c906108c SS |
3464 | |
3465 | ||
3466 | ||
3467 | void | |
fba45db2 | 3468 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3469 | { |
35df4500 TJB |
3470 | struct breakpoint *b, *b_tmp; |
3471 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 3472 | int ix; |
6c95b8df | 3473 | struct program_space *pspace = current_program_space; |
c906108c | 3474 | |
50c71eaf PA |
3475 | /* If breakpoint locations are shared across processes, then there's |
3476 | nothing to do. */ | |
2567c7d9 | 3477 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
3478 | return; |
3479 | ||
35df4500 | 3480 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3481 | { |
35df4500 TJB |
3482 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
3483 | if (bl->pspace == pspace | |
3484 | && bl->owner->enable_state != bp_permanent) | |
3485 | bl->inserted = 0; | |
6c95b8df | 3486 | } |
075f6582 | 3487 | |
35df4500 | 3488 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3489 | { |
6c95b8df PA |
3490 | if (b->loc && b->loc->pspace != pspace) |
3491 | continue; | |
3492 | ||
c5aa993b JM |
3493 | switch (b->type) |
3494 | { | |
3495 | case bp_call_dummy: | |
e2e4d78b | 3496 | case bp_longjmp_call_dummy: |
c906108c | 3497 | |
c5aa993b | 3498 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3499 | cause problems when the inferior is rerun, so we better get |
3500 | rid of it. */ | |
3501 | ||
3502 | case bp_watchpoint_scope: | |
3503 | ||
3504 | /* Also get rid of scope breakpoints. */ | |
3505 | ||
3506 | case bp_shlib_event: | |
3507 | ||
3508 | /* Also remove solib event breakpoints. Their addresses may | |
3509 | have changed since the last time we ran the program. | |
3510 | Actually we may now be debugging against different target; | |
3511 | and so the solib backend that installed this breakpoint may | |
3512 | not be used in by the target. E.g., | |
3513 | ||
3514 | (gdb) file prog-linux | |
3515 | (gdb) run # native linux target | |
3516 | ... | |
3517 | (gdb) kill | |
3518 | (gdb) file prog-win.exe | |
3519 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3520 | */ | |
c906108c | 3521 | |
f59f708a PA |
3522 | case bp_step_resume: |
3523 | ||
3524 | /* Also remove step-resume breakpoints. */ | |
3525 | ||
c5aa993b JM |
3526 | delete_breakpoint (b); |
3527 | break; | |
c906108c | 3528 | |
c5aa993b JM |
3529 | case bp_watchpoint: |
3530 | case bp_hardware_watchpoint: | |
3531 | case bp_read_watchpoint: | |
3532 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3533 | { |
3534 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3535 | |
3a5c3e22 PA |
3536 | /* Likewise for watchpoints on local expressions. */ |
3537 | if (w->exp_valid_block != NULL) | |
3538 | delete_breakpoint (b); | |
3539 | else if (context == inf_starting) | |
3540 | { | |
3541 | /* Reset val field to force reread of starting value in | |
3542 | insert_breakpoints. */ | |
3543 | if (w->val) | |
3544 | value_free (w->val); | |
3545 | w->val = NULL; | |
3546 | w->val_valid = 0; | |
c860120c | 3547 | } |
3a5c3e22 | 3548 | } |
c5aa993b JM |
3549 | break; |
3550 | default: | |
c5aa993b JM |
3551 | break; |
3552 | } | |
3553 | } | |
1c5cfe86 PA |
3554 | |
3555 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3556 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3557 | decref_bp_location (&bl); | |
1c5cfe86 | 3558 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3559 | } |
3560 | ||
6c95b8df PA |
3561 | /* These functions concern about actual breakpoints inserted in the |
3562 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3563 | we need to hop over the bkpt --- so we check for address space | |
3564 | match, not program space. */ | |
3565 | ||
c2c6d25f JM |
3566 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3567 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3568 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3569 | permanent breakpoint. | |
3570 | - When continuing from a location with an ordinary breakpoint, we | |
3571 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3572 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3573 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3574 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3575 | |
c2c6d25f | 3576 | enum breakpoint_here |
6c95b8df | 3577 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 3578 | { |
35df4500 | 3579 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3580 | int any_breakpoint_here = 0; |
c906108c | 3581 | |
35df4500 | 3582 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3583 | { |
35df4500 TJB |
3584 | if (bl->loc_type != bp_loc_software_breakpoint |
3585 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3586 | continue; |
3587 | ||
f1310107 | 3588 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
3589 | if ((breakpoint_enabled (bl->owner) |
3590 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 3591 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3592 | { |
3593 | if (overlay_debugging | |
35df4500 TJB |
3594 | && section_is_overlay (bl->section) |
3595 | && !section_is_mapped (bl->section)) | |
075f6582 | 3596 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 3597 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
3598 | return permanent_breakpoint_here; |
3599 | else | |
3600 | any_breakpoint_here = 1; | |
3601 | } | |
3602 | } | |
c906108c | 3603 | |
c2c6d25f | 3604 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
3605 | } |
3606 | ||
1c5cfe86 PA |
3607 | /* Return true if there's a moribund breakpoint at PC. */ |
3608 | ||
3609 | int | |
6c95b8df | 3610 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
3611 | { |
3612 | struct bp_location *loc; | |
3613 | int ix; | |
3614 | ||
3615 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 3616 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
3617 | return 1; |
3618 | ||
3619 | return 0; | |
3620 | } | |
c2c6d25f | 3621 | |
c36b740a | 3622 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
3623 | inserted using regular breakpoint_chain / bp_location array |
3624 | mechanism. This does not check for single-step breakpoints, which | |
3625 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
3626 | |
3627 | int | |
4a64f543 MS |
3628 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
3629 | CORE_ADDR pc) | |
c906108c | 3630 | { |
35df4500 | 3631 | struct bp_location *bl, **blp_tmp; |
c906108c | 3632 | |
35df4500 | 3633 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3634 | { |
35df4500 TJB |
3635 | if (bl->loc_type != bp_loc_software_breakpoint |
3636 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3637 | continue; |
3638 | ||
35df4500 | 3639 | if (bl->inserted |
f1310107 | 3640 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3641 | { |
3642 | if (overlay_debugging | |
35df4500 TJB |
3643 | && section_is_overlay (bl->section) |
3644 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
3645 | continue; /* unmapped overlay -- can't be a match */ |
3646 | else | |
3647 | return 1; | |
3648 | } | |
c5aa993b | 3649 | } |
c36b740a VP |
3650 | return 0; |
3651 | } | |
3652 | ||
3653 | /* Returns non-zero iff there's either regular breakpoint | |
3654 | or a single step breakpoint inserted at PC. */ | |
3655 | ||
3656 | int | |
6c95b8df | 3657 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 3658 | { |
6c95b8df | 3659 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 3660 | return 1; |
c906108c | 3661 | |
6c95b8df | 3662 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3663 | return 1; |
3664 | ||
c906108c SS |
3665 | return 0; |
3666 | } | |
3667 | ||
4fa8626c DJ |
3668 | /* This function returns non-zero iff there is a software breakpoint |
3669 | inserted at PC. */ | |
3670 | ||
3671 | int | |
3e43a32a MS |
3672 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
3673 | CORE_ADDR pc) | |
4fa8626c | 3674 | { |
35df4500 | 3675 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 3676 | |
35df4500 | 3677 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 3678 | { |
35df4500 | 3679 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
3680 | continue; |
3681 | ||
35df4500 TJB |
3682 | if (bl->inserted |
3683 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 3684 | aspace, pc)) |
4fa8626c DJ |
3685 | { |
3686 | if (overlay_debugging | |
35df4500 TJB |
3687 | && section_is_overlay (bl->section) |
3688 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
3689 | continue; /* unmapped overlay -- can't be a match */ |
3690 | else | |
3691 | return 1; | |
3692 | } | |
3693 | } | |
3694 | ||
1aafd4da | 3695 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 3696 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3697 | return 1; |
3698 | ||
4fa8626c DJ |
3699 | return 0; |
3700 | } | |
3701 | ||
9093389c PA |
3702 | int |
3703 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
3704 | CORE_ADDR addr, ULONGEST len) | |
3705 | { | |
3706 | struct breakpoint *bpt; | |
3707 | ||
3708 | ALL_BREAKPOINTS (bpt) | |
3709 | { | |
3710 | struct bp_location *loc; | |
3711 | ||
3712 | if (bpt->type != bp_hardware_watchpoint | |
3713 | && bpt->type != bp_access_watchpoint) | |
3714 | continue; | |
3715 | ||
3716 | if (!breakpoint_enabled (bpt)) | |
3717 | continue; | |
3718 | ||
3719 | for (loc = bpt->loc; loc; loc = loc->next) | |
3720 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3721 | { | |
3722 | CORE_ADDR l, h; | |
3723 | ||
3724 | /* Check for intersection. */ | |
3725 | l = max (loc->address, addr); | |
3726 | h = min (loc->address + loc->length, addr + len); | |
3727 | if (l < h) | |
3728 | return 1; | |
3729 | } | |
3730 | } | |
3731 | return 0; | |
3732 | } | |
3733 | ||
075f6582 DJ |
3734 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
3735 | PC is valid for process/thread PTID. */ | |
c906108c SS |
3736 | |
3737 | int | |
6c95b8df PA |
3738 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
3739 | ptid_t ptid) | |
c906108c | 3740 | { |
35df4500 | 3741 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 3742 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 3743 | int thread = -1; |
4a306c9a | 3744 | int task = 0; |
a6f1cd96 | 3745 | |
35df4500 | 3746 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3747 | { |
35df4500 TJB |
3748 | if (bl->loc_type != bp_loc_software_breakpoint |
3749 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3750 | continue; |
3751 | ||
35df4500 TJB |
3752 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
3753 | if (!breakpoint_enabled (bl->owner) | |
3754 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
3755 | continue; |
3756 | ||
f1310107 | 3757 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
3758 | continue; |
3759 | ||
35df4500 | 3760 | if (bl->owner->thread != -1) |
075f6582 | 3761 | { |
a6f1cd96 JB |
3762 | /* This is a thread-specific breakpoint. Check that ptid |
3763 | matches that thread. If thread hasn't been computed yet, | |
3764 | it is now time to do so. */ | |
3765 | if (thread == -1) | |
3766 | thread = pid_to_thread_id (ptid); | |
35df4500 | 3767 | if (bl->owner->thread != thread) |
a6f1cd96 | 3768 | continue; |
075f6582 | 3769 | } |
a6f1cd96 | 3770 | |
35df4500 | 3771 | if (bl->owner->task != 0) |
4a306c9a JB |
3772 | { |
3773 | /* This is a task-specific breakpoint. Check that ptid | |
3774 | matches that task. If task hasn't been computed yet, | |
3775 | it is now time to do so. */ | |
3776 | if (task == 0) | |
3777 | task = ada_get_task_number (ptid); | |
35df4500 | 3778 | if (bl->owner->task != task) |
4a306c9a JB |
3779 | continue; |
3780 | } | |
3781 | ||
a6f1cd96 | 3782 | if (overlay_debugging |
35df4500 TJB |
3783 | && section_is_overlay (bl->section) |
3784 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
3785 | continue; /* unmapped overlay -- can't be a match */ |
3786 | ||
3787 | return 1; | |
c5aa993b | 3788 | } |
c906108c SS |
3789 | |
3790 | return 0; | |
3791 | } | |
c906108c | 3792 | \f |
c5aa993b | 3793 | |
c906108c SS |
3794 | /* bpstat stuff. External routines' interfaces are documented |
3795 | in breakpoint.h. */ | |
3796 | ||
3797 | int | |
c326b90e | 3798 | is_catchpoint (struct breakpoint *ep) |
c906108c | 3799 | { |
533be4dd | 3800 | return (ep->type == bp_catchpoint); |
c906108c SS |
3801 | } |
3802 | ||
f431efe5 PA |
3803 | /* Frees any storage that is part of a bpstat. Does not walk the |
3804 | 'next' chain. */ | |
3805 | ||
3806 | static void | |
198757a8 VP |
3807 | bpstat_free (bpstat bs) |
3808 | { | |
3809 | if (bs->old_val != NULL) | |
3810 | value_free (bs->old_val); | |
9add0f1b | 3811 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3812 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3813 | xfree (bs); |
3814 | } | |
3815 | ||
c906108c SS |
3816 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3817 | Also free any storage that is part of a bpstat. */ | |
3818 | ||
3819 | void | |
fba45db2 | 3820 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3821 | { |
3822 | bpstat p; | |
3823 | bpstat q; | |
3824 | ||
3825 | if (bsp == 0) | |
3826 | return; | |
3827 | p = *bsp; | |
3828 | while (p != NULL) | |
3829 | { | |
3830 | q = p->next; | |
198757a8 | 3831 | bpstat_free (p); |
c906108c SS |
3832 | p = q; |
3833 | } | |
3834 | *bsp = NULL; | |
3835 | } | |
3836 | ||
3837 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3838 | is part of the bpstat is copied as well. */ | |
3839 | ||
3840 | bpstat | |
fba45db2 | 3841 | bpstat_copy (bpstat bs) |
c906108c SS |
3842 | { |
3843 | bpstat p = NULL; | |
3844 | bpstat tmp; | |
3845 | bpstat retval = NULL; | |
3846 | ||
3847 | if (bs == NULL) | |
3848 | return bs; | |
3849 | ||
3850 | for (; bs != NULL; bs = bs->next) | |
3851 | { | |
3852 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3853 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3854 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3855 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3856 | if (bs->old_val != NULL) |
3c3185ac JK |
3857 | { |
3858 | tmp->old_val = value_copy (bs->old_val); | |
3859 | release_value (tmp->old_val); | |
3860 | } | |
31cc81e9 | 3861 | |
c906108c SS |
3862 | if (p == NULL) |
3863 | /* This is the first thing in the chain. */ | |
3864 | retval = tmp; | |
3865 | else | |
3866 | p->next = tmp; | |
3867 | p = tmp; | |
3868 | } | |
3869 | p->next = NULL; | |
3870 | return retval; | |
3871 | } | |
3872 | ||
4a64f543 | 3873 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3874 | |
3875 | bpstat | |
fba45db2 | 3876 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3877 | { |
c5aa993b JM |
3878 | if (bsp == NULL) |
3879 | return NULL; | |
c906108c | 3880 | |
c5aa993b JM |
3881 | for (; bsp != NULL; bsp = bsp->next) |
3882 | { | |
f431efe5 | 3883 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3884 | return bsp; |
3885 | } | |
c906108c SS |
3886 | return NULL; |
3887 | } | |
3888 | ||
4a64f543 MS |
3889 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3890 | stopped at. *BSP upon return is a bpstat which points to the | |
3891 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3892 | good for anything but further calls to bpstat_num). | |
3893 | ||
8671a17b PA |
3894 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3895 | Return -1 if stopped at a breakpoint that has been deleted since | |
3896 | we set it. | |
3897 | Return 1 otherwise. */ | |
c906108c SS |
3898 | |
3899 | int | |
8671a17b | 3900 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3901 | { |
3902 | struct breakpoint *b; | |
3903 | ||
3904 | if ((*bsp) == NULL) | |
3905 | return 0; /* No more breakpoint values */ | |
8671a17b | 3906 | |
4a64f543 MS |
3907 | /* We assume we'll never have several bpstats that correspond to a |
3908 | single breakpoint -- otherwise, this function might return the | |
3909 | same number more than once and this will look ugly. */ | |
f431efe5 | 3910 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3911 | *bsp = (*bsp)->next; |
3912 | if (b == NULL) | |
3913 | return -1; /* breakpoint that's been deleted since */ | |
3914 | ||
3915 | *num = b->number; /* We have its number */ | |
3916 | return 1; | |
c906108c SS |
3917 | } |
3918 | ||
e93ca019 | 3919 | /* See breakpoint.h. */ |
c906108c SS |
3920 | |
3921 | void | |
e93ca019 | 3922 | bpstat_clear_actions (void) |
c906108c | 3923 | { |
e93ca019 JK |
3924 | struct thread_info *tp; |
3925 | bpstat bs; | |
3926 | ||
3927 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3928 | return; | |
3929 | ||
3930 | tp = find_thread_ptid (inferior_ptid); | |
3931 | if (tp == NULL) | |
3932 | return; | |
3933 | ||
3934 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 3935 | { |
9add0f1b | 3936 | decref_counted_command_line (&bs->commands); |
abf85f46 | 3937 | |
c906108c SS |
3938 | if (bs->old_val != NULL) |
3939 | { | |
3940 | value_free (bs->old_val); | |
3941 | bs->old_val = NULL; | |
3942 | } | |
3943 | } | |
3944 | } | |
3945 | ||
f3b1572e PA |
3946 | /* Called when a command is about to proceed the inferior. */ |
3947 | ||
3948 | static void | |
3949 | breakpoint_about_to_proceed (void) | |
3950 | { | |
3951 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3952 | { | |
3953 | struct thread_info *tp = inferior_thread (); | |
3954 | ||
3955 | /* Allow inferior function calls in breakpoint commands to not | |
3956 | interrupt the command list. When the call finishes | |
3957 | successfully, the inferior will be standing at the same | |
3958 | breakpoint as if nothing happened. */ | |
16c381f0 | 3959 | if (tp->control.in_infcall) |
f3b1572e PA |
3960 | return; |
3961 | } | |
3962 | ||
3963 | breakpoint_proceeded = 1; | |
3964 | } | |
3965 | ||
4a64f543 MS |
3966 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3967 | command. */ | |
c906108c | 3968 | static void |
4efb68b1 | 3969 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3970 | { |
3971 | executing_breakpoint_commands = 0; | |
3972 | } | |
3973 | ||
abf85f46 JK |
3974 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
3975 | or its equivalent. */ | |
3976 | ||
3977 | static int | |
3978 | command_line_is_silent (struct command_line *cmd) | |
3979 | { | |
3980 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
3981 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
3982 | } | |
3983 | ||
4a64f543 MS |
3984 | /* Execute all the commands associated with all the breakpoints at |
3985 | this location. Any of these commands could cause the process to | |
3986 | proceed beyond this point, etc. We look out for such changes by | |
3987 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3988 | |
347bddb7 PA |
3989 | Returns true if a breakpoint command resumed the inferior. In that |
3990 | case, it is the caller's responsibility to recall it again with the | |
3991 | bpstat of the current thread. */ | |
3992 | ||
3993 | static int | |
3994 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3995 | { |
3996 | bpstat bs; | |
3997 | struct cleanup *old_chain; | |
347bddb7 | 3998 | int again = 0; |
c906108c SS |
3999 | |
4000 | /* Avoid endless recursion if a `source' command is contained | |
4001 | in bs->commands. */ | |
4002 | if (executing_breakpoint_commands) | |
347bddb7 | 4003 | return 0; |
c906108c SS |
4004 | |
4005 | executing_breakpoint_commands = 1; | |
4006 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4007 | ||
cf6c5ffb TT |
4008 | prevent_dont_repeat (); |
4009 | ||
4a64f543 | 4010 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4011 | bs = *bsp; |
4012 | ||
4013 | breakpoint_proceeded = 0; | |
4014 | for (; bs != NULL; bs = bs->next) | |
4015 | { | |
9add0f1b | 4016 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4017 | struct command_line *cmd; |
4018 | struct cleanup *this_cmd_tree_chain; | |
4019 | ||
4020 | /* Take ownership of the BSP's command tree, if it has one. | |
4021 | ||
4022 | The command tree could legitimately contain commands like | |
4023 | 'step' and 'next', which call clear_proceed_status, which | |
4024 | frees stop_bpstat's command tree. To make sure this doesn't | |
4025 | free the tree we're executing out from under us, we need to | |
4026 | take ownership of the tree ourselves. Since a given bpstat's | |
4027 | commands are only executed once, we don't need to copy it; we | |
4028 | can clear the pointer in the bpstat, and make sure we free | |
4029 | the tree when we're done. */ | |
9add0f1b TT |
4030 | ccmd = bs->commands; |
4031 | bs->commands = NULL; | |
abf85f46 JK |
4032 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4033 | cmd = ccmd ? ccmd->commands : NULL; | |
4034 | if (command_line_is_silent (cmd)) | |
4035 | { | |
4036 | /* The action has been already done by bpstat_stop_status. */ | |
4037 | cmd = cmd->next; | |
4038 | } | |
6c50ab1c | 4039 | |
c906108c SS |
4040 | while (cmd != NULL) |
4041 | { | |
4042 | execute_control_command (cmd); | |
4043 | ||
4044 | if (breakpoint_proceeded) | |
4045 | break; | |
4046 | else | |
4047 | cmd = cmd->next; | |
4048 | } | |
6c50ab1c JB |
4049 | |
4050 | /* We can free this command tree now. */ | |
4051 | do_cleanups (this_cmd_tree_chain); | |
4052 | ||
c906108c | 4053 | if (breakpoint_proceeded) |
32c1e744 VP |
4054 | { |
4055 | if (target_can_async_p ()) | |
347bddb7 PA |
4056 | /* If we are in async mode, then the target might be still |
4057 | running, not stopped at any breakpoint, so nothing for | |
4058 | us to do here -- just return to the event loop. */ | |
4059 | ; | |
32c1e744 VP |
4060 | else |
4061 | /* In sync mode, when execute_control_command returns | |
4062 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4063 | Breakpoint commands for that stop were not run, since |
4064 | execute_command does not run breakpoint commands -- | |
4065 | only command_line_handler does, but that one is not | |
4066 | involved in execution of breakpoint commands. So, we | |
4067 | can now execute breakpoint commands. It should be | |
4068 | noted that making execute_command do bpstat actions is | |
4069 | not an option -- in this case we'll have recursive | |
4070 | invocation of bpstat for each breakpoint with a | |
4071 | command, and can easily blow up GDB stack. Instead, we | |
4072 | return true, which will trigger the caller to recall us | |
4073 | with the new stop_bpstat. */ | |
4074 | again = 1; | |
4075 | break; | |
32c1e744 | 4076 | } |
c906108c | 4077 | } |
c2b8ed2c | 4078 | do_cleanups (old_chain); |
347bddb7 PA |
4079 | return again; |
4080 | } | |
4081 | ||
4082 | void | |
4083 | bpstat_do_actions (void) | |
4084 | { | |
353d1d73 JK |
4085 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4086 | ||
347bddb7 PA |
4087 | /* Do any commands attached to breakpoint we are stopped at. */ |
4088 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4089 | && target_has_execution | |
4090 | && !is_exited (inferior_ptid) | |
4091 | && !is_executing (inferior_ptid)) | |
4092 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4093 | and only return when it is stopped at the next breakpoint, we | |
4094 | keep doing breakpoint actions until it returns false to | |
4095 | indicate the inferior was not resumed. */ | |
16c381f0 | 4096 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4097 | break; |
353d1d73 JK |
4098 | |
4099 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4100 | } |
4101 | ||
fa4727a6 DJ |
4102 | /* Print out the (old or new) value associated with a watchpoint. */ |
4103 | ||
4104 | static void | |
4105 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4106 | { | |
4107 | if (val == NULL) | |
4108 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4109 | else | |
79a45b7d TT |
4110 | { |
4111 | struct value_print_options opts; | |
4112 | get_user_print_options (&opts); | |
4113 | value_print (val, stream, &opts); | |
4114 | } | |
fa4727a6 DJ |
4115 | } |
4116 | ||
e514a9d6 | 4117 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4118 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4119 | 'print_it' in the bpstat structure. Under some circumstances we |
4120 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4121 | normal_stop(). */ |
e514a9d6 JM |
4122 | |
4123 | static enum print_stop_action | |
4124 | print_bp_stop_message (bpstat bs) | |
4125 | { | |
4126 | switch (bs->print_it) | |
4127 | { | |
4128 | case print_it_noop: | |
4a64f543 | 4129 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4130 | return PRINT_UNKNOWN; |
4131 | break; | |
4132 | ||
4133 | case print_it_done: | |
4134 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4135 | relevant messages. */ |
e514a9d6 JM |
4136 | return PRINT_SRC_AND_LOC; |
4137 | break; | |
4138 | ||
4139 | case print_it_normal: | |
4f8d1dc6 | 4140 | { |
f431efe5 PA |
4141 | struct breakpoint *b = bs->breakpoint_at; |
4142 | ||
1a6a67de TJB |
4143 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4144 | which has since been deleted. */ | |
4145 | if (b == NULL) | |
4146 | return PRINT_UNKNOWN; | |
4147 | ||
348d480f PA |
4148 | /* Normal case. Call the breakpoint's print_it method. */ |
4149 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4150 | } |
348d480f | 4151 | break; |
3086aeae | 4152 | |
e514a9d6 | 4153 | default: |
8e65ff28 | 4154 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4155 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4156 | break; |
c906108c | 4157 | } |
c906108c SS |
4158 | } |
4159 | ||
edcc5120 TT |
4160 | /* A helper function that prints a shared library stopped event. */ |
4161 | ||
4162 | static void | |
4163 | print_solib_event (int is_catchpoint) | |
4164 | { | |
4165 | int any_deleted | |
4166 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4167 | int any_added | |
4168 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4169 | ||
4170 | if (!is_catchpoint) | |
4171 | { | |
4172 | if (any_added || any_deleted) | |
4173 | ui_out_text (current_uiout, | |
4174 | _("Stopped due to shared library event:\n")); | |
4175 | else | |
4176 | ui_out_text (current_uiout, | |
4177 | _("Stopped due to shared library event (no " | |
4178 | "libraries added or removed)\n")); | |
4179 | } | |
4180 | ||
4181 | if (ui_out_is_mi_like_p (current_uiout)) | |
4182 | ui_out_field_string (current_uiout, "reason", | |
4183 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4184 | ||
4185 | if (any_deleted) | |
4186 | { | |
4187 | struct cleanup *cleanup; | |
4188 | char *name; | |
4189 | int ix; | |
4190 | ||
4191 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4192 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4193 | "removed"); | |
4194 | for (ix = 0; | |
4195 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4196 | ix, name); | |
4197 | ++ix) | |
4198 | { | |
4199 | if (ix > 0) | |
4200 | ui_out_text (current_uiout, " "); | |
4201 | ui_out_field_string (current_uiout, "library", name); | |
4202 | ui_out_text (current_uiout, "\n"); | |
4203 | } | |
4204 | ||
4205 | do_cleanups (cleanup); | |
4206 | } | |
4207 | ||
4208 | if (any_added) | |
4209 | { | |
4210 | struct so_list *iter; | |
4211 | int ix; | |
4212 | struct cleanup *cleanup; | |
4213 | ||
4214 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4215 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4216 | "added"); | |
4217 | for (ix = 0; | |
4218 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4219 | ix, iter); | |
4220 | ++ix) | |
4221 | { | |
4222 | if (ix > 0) | |
4223 | ui_out_text (current_uiout, " "); | |
4224 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4225 | ui_out_text (current_uiout, "\n"); | |
4226 | } | |
4227 | ||
4228 | do_cleanups (cleanup); | |
4229 | } | |
4230 | } | |
4231 | ||
e514a9d6 JM |
4232 | /* Print a message indicating what happened. This is called from |
4233 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4234 | list - a list of the eventpoints that caused this stop. KIND is |
4235 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4236 | routine calls the generic print routine for printing a message |
4237 | about reasons for stopping. This will print (for example) the | |
4238 | "Breakpoint n," part of the output. The return value of this | |
4239 | routine is one of: | |
c906108c | 4240 | |
4a64f543 | 4241 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4242 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4243 | code to print the location. An example is |
c5aa993b JM |
4244 | "Breakpoint 1, " which should be followed by |
4245 | the location. | |
917317f4 | 4246 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4247 | to also print the location part of the message. |
4248 | An example is the catch/throw messages, which | |
4a64f543 | 4249 | don't require a location appended to the end. |
917317f4 | 4250 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4251 | further info to be printed. */ |
c906108c | 4252 | |
917317f4 | 4253 | enum print_stop_action |
36dfb11c | 4254 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4255 | { |
4256 | int val; | |
c5aa993b | 4257 | |
c906108c | 4258 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4259 | (Currently all watchpoints go on the bpstat whether hit or not. |
4260 | That probably could (should) be changed, provided care is taken | |
c906108c | 4261 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4262 | for (; bs; bs = bs->next) |
4263 | { | |
4264 | val = print_bp_stop_message (bs); | |
4265 | if (val == PRINT_SRC_ONLY | |
4266 | || val == PRINT_SRC_AND_LOC | |
4267 | || val == PRINT_NOTHING) | |
4268 | return val; | |
4269 | } | |
c906108c | 4270 | |
36dfb11c TT |
4271 | /* If we had hit a shared library event breakpoint, |
4272 | print_bp_stop_message would print out this message. If we hit an | |
4273 | OS-level shared library event, do the same thing. */ | |
4274 | if (kind == TARGET_WAITKIND_LOADED) | |
4275 | { | |
edcc5120 | 4276 | print_solib_event (0); |
36dfb11c TT |
4277 | return PRINT_NOTHING; |
4278 | } | |
4279 | ||
e514a9d6 | 4280 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4281 | with and nothing was printed. */ |
917317f4 | 4282 | return PRINT_UNKNOWN; |
c906108c SS |
4283 | } |
4284 | ||
4a64f543 MS |
4285 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
4286 | used inside a catch_errors to evaluate the breakpoint condition. | |
4287 | The argument is a "struct expression *" that has been cast to a | |
4288 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
4289 | |
4290 | static int | |
4efb68b1 | 4291 | breakpoint_cond_eval (void *exp) |
c906108c | 4292 | { |
278cd55f | 4293 | struct value *mark = value_mark (); |
c5aa993b | 4294 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4295 | |
c906108c SS |
4296 | value_free_to_mark (mark); |
4297 | return i; | |
4298 | } | |
4299 | ||
5760d0ab | 4300 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4301 | |
4302 | static bpstat | |
5760d0ab | 4303 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4304 | { |
4305 | bpstat bs; | |
4306 | ||
4307 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4308 | bs->next = NULL; |
4309 | **bs_link_pointer = bs; | |
4310 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4311 | bs->breakpoint_at = bl->owner; |
4312 | bs->bp_location_at = bl; | |
4313 | incref_bp_location (bl); | |
c906108c SS |
4314 | /* If the condition is false, etc., don't do the commands. */ |
4315 | bs->commands = NULL; | |
4316 | bs->old_val = NULL; | |
4317 | bs->print_it = print_it_normal; | |
4318 | return bs; | |
4319 | } | |
4320 | \f | |
d983da9c DJ |
4321 | /* The target has stopped with waitstatus WS. Check if any hardware |
4322 | watchpoints have triggered, according to the target. */ | |
4323 | ||
4324 | int | |
4325 | watchpoints_triggered (struct target_waitstatus *ws) | |
4326 | { | |
d92524f1 | 4327 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4328 | CORE_ADDR addr; |
4329 | struct breakpoint *b; | |
4330 | ||
4331 | if (!stopped_by_watchpoint) | |
4332 | { | |
4333 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4334 | as not triggered. */ | |
4335 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4336 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4337 | { |
4338 | struct watchpoint *w = (struct watchpoint *) b; | |
4339 | ||
4340 | w->watchpoint_triggered = watch_triggered_no; | |
4341 | } | |
d983da9c DJ |
4342 | |
4343 | return 0; | |
4344 | } | |
4345 | ||
4346 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4347 | { | |
4348 | /* We were stopped by a watchpoint, but we don't know where. | |
4349 | Mark all watchpoints as unknown. */ | |
4350 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4351 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4352 | { |
4353 | struct watchpoint *w = (struct watchpoint *) b; | |
4354 | ||
4355 | w->watchpoint_triggered = watch_triggered_unknown; | |
4356 | } | |
d983da9c DJ |
4357 | |
4358 | return stopped_by_watchpoint; | |
4359 | } | |
4360 | ||
4361 | /* The target could report the data address. Mark watchpoints | |
4362 | affected by this data address as triggered, and all others as not | |
4363 | triggered. */ | |
4364 | ||
4365 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4366 | if (is_hardware_watchpoint (b)) |
d983da9c | 4367 | { |
3a5c3e22 | 4368 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4369 | struct bp_location *loc; |
d983da9c | 4370 | |
3a5c3e22 | 4371 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4372 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4373 | { |
3a5c3e22 | 4374 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4375 | { |
3a5c3e22 PA |
4376 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4377 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4378 | |
4379 | if (newaddr == start) | |
4380 | { | |
3a5c3e22 | 4381 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4382 | break; |
4383 | } | |
4384 | } | |
4385 | /* Exact match not required. Within range is sufficient. */ | |
4386 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4387 | addr, loc->address, | |
4388 | loc->length)) | |
4389 | { | |
3a5c3e22 | 4390 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4391 | break; |
4392 | } | |
4393 | } | |
d983da9c DJ |
4394 | } |
4395 | ||
4396 | return 1; | |
4397 | } | |
4398 | ||
c906108c SS |
4399 | /* Possible return values for watchpoint_check (this can't be an enum |
4400 | because of check_errors). */ | |
4401 | /* The watchpoint has been deleted. */ | |
4402 | #define WP_DELETED 1 | |
4403 | /* The value has changed. */ | |
4404 | #define WP_VALUE_CHANGED 2 | |
4405 | /* The value has not changed. */ | |
4406 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4407 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4408 | #define WP_IGNORE 4 | |
c906108c SS |
4409 | |
4410 | #define BP_TEMPFLAG 1 | |
4411 | #define BP_HARDWAREFLAG 2 | |
4412 | ||
4a64f543 MS |
4413 | /* Evaluate watchpoint condition expression and check if its value |
4414 | changed. | |
553e4c11 JB |
4415 | |
4416 | P should be a pointer to struct bpstat, but is defined as a void * | |
4417 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4418 | |
4419 | static int | |
4efb68b1 | 4420 | watchpoint_check (void *p) |
c906108c SS |
4421 | { |
4422 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4423 | struct watchpoint *b; |
c906108c SS |
4424 | struct frame_info *fr; |
4425 | int within_current_scope; | |
4426 | ||
f431efe5 | 4427 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4428 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4429 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4430 | |
f6bc2008 PA |
4431 | /* If this is a local watchpoint, we only want to check if the |
4432 | watchpoint frame is in scope if the current thread is the thread | |
4433 | that was used to create the watchpoint. */ | |
4434 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4435 | return WP_IGNORE; |
f6bc2008 | 4436 | |
c906108c SS |
4437 | if (b->exp_valid_block == NULL) |
4438 | within_current_scope = 1; | |
4439 | else | |
4440 | { | |
edb3359d DJ |
4441 | struct frame_info *frame = get_current_frame (); |
4442 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4443 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4444 | ||
4a64f543 MS |
4445 | /* in_function_epilogue_p() returns a non-zero value if we're |
4446 | still in the function but the stack frame has already been | |
4447 | invalidated. Since we can't rely on the values of local | |
4448 | variables after the stack has been destroyed, we are treating | |
4449 | the watchpoint in that state as `not changed' without further | |
4450 | checking. Don't mark watchpoints as changed if the current | |
4451 | frame is in an epilogue - even if they are in some other | |
4452 | frame, our view of the stack is likely to be wrong and | |
4453 | frame_find_by_id could error out. */ | |
a0f49112 | 4454 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 4455 | return WP_IGNORE; |
a0f49112 | 4456 | |
101dcfbe | 4457 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4458 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4459 | |
4460 | /* If we've gotten confused in the unwinder, we might have | |
4461 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4462 | if (within_current_scope) |
4463 | { | |
4464 | struct symbol *function; | |
4465 | ||
4466 | function = get_frame_function (fr); | |
4467 | if (function == NULL | |
4468 | || !contained_in (b->exp_valid_block, | |
4469 | SYMBOL_BLOCK_VALUE (function))) | |
4470 | within_current_scope = 0; | |
4471 | } | |
69fbadd5 | 4472 | |
edb3359d | 4473 | if (within_current_scope) |
c906108c SS |
4474 | /* If we end up stopping, the current frame will get selected |
4475 | in normal_stop. So this call to select_frame won't affect | |
4476 | the user. */ | |
0f7d239c | 4477 | select_frame (fr); |
c906108c | 4478 | } |
c5aa993b | 4479 | |
c906108c SS |
4480 | if (within_current_scope) |
4481 | { | |
4a64f543 MS |
4482 | /* We use value_{,free_to_}mark because it could be a *long* |
4483 | time before we return to the command level and call | |
4484 | free_all_values. We can't call free_all_values because we | |
4485 | might be in the middle of evaluating a function call. */ | |
c906108c | 4486 | |
0cf6dd15 | 4487 | int pc = 0; |
9c06b0b4 | 4488 | struct value *mark; |
fa4727a6 DJ |
4489 | struct value *new_val; |
4490 | ||
3a5c3e22 | 4491 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
4492 | /* Since we don't know the exact trigger address (from |
4493 | stopped_data_address), just tell the user we've triggered | |
4494 | a mask watchpoint. */ | |
4495 | return WP_VALUE_CHANGED; | |
4496 | ||
4497 | mark = value_mark (); | |
0cf6dd15 | 4498 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 4499 | |
4a64f543 MS |
4500 | /* We use value_equal_contents instead of value_equal because |
4501 | the latter coerces an array to a pointer, thus comparing just | |
4502 | the address of the array instead of its contents. This is | |
4503 | not what we want. */ | |
fa4727a6 | 4504 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4505 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4506 | { |
fa4727a6 DJ |
4507 | if (new_val != NULL) |
4508 | { | |
4509 | release_value (new_val); | |
4510 | value_free_to_mark (mark); | |
4511 | } | |
c906108c SS |
4512 | bs->old_val = b->val; |
4513 | b->val = new_val; | |
fa4727a6 | 4514 | b->val_valid = 1; |
c906108c SS |
4515 | return WP_VALUE_CHANGED; |
4516 | } | |
4517 | else | |
4518 | { | |
60e1c644 | 4519 | /* Nothing changed. */ |
c906108c | 4520 | value_free_to_mark (mark); |
c906108c SS |
4521 | return WP_VALUE_NOT_CHANGED; |
4522 | } | |
4523 | } | |
4524 | else | |
4525 | { | |
79a45e25 PA |
4526 | struct ui_out *uiout = current_uiout; |
4527 | ||
c906108c | 4528 | /* This seems like the only logical thing to do because |
c5aa993b JM |
4529 | if we temporarily ignored the watchpoint, then when |
4530 | we reenter the block in which it is valid it contains | |
4531 | garbage (in the case of a function, it may have two | |
4532 | garbage values, one before and one after the prologue). | |
4533 | So we can't even detect the first assignment to it and | |
4534 | watch after that (since the garbage may or may not equal | |
4535 | the first value assigned). */ | |
348d480f PA |
4536 | /* We print all the stop information in |
4537 | breakpoint_ops->print_it, but in this case, by the time we | |
4538 | call breakpoint_ops->print_it this bp will be deleted | |
4539 | already. So we have no choice but print the information | |
4540 | here. */ | |
9dc5e2a9 | 4541 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
4542 | ui_out_field_string |
4543 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 4544 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 4545 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
4546 | ui_out_text (uiout, |
4547 | " deleted because the program has left the block in\n\ | |
8b93c638 | 4548 | which its expression is valid.\n"); |
4ce44c66 | 4549 | |
cdac0397 | 4550 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 4551 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 4552 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4553 | |
4554 | return WP_DELETED; | |
4555 | } | |
4556 | } | |
4557 | ||
18a18393 | 4558 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4559 | breakpoint location BL. This function does not check if we should |
4560 | stop, only if BL explains the stop. */ | |
4561 | ||
18a18393 | 4562 | static int |
6c95b8df | 4563 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
4564 | struct address_space *aspace, CORE_ADDR bp_addr, |
4565 | const struct target_waitstatus *ws) | |
18a18393 VP |
4566 | { |
4567 | struct breakpoint *b = bl->owner; | |
4568 | ||
348d480f | 4569 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4570 | gdb_assert (b != NULL); |
4571 | ||
09ac7c10 | 4572 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4573 | } |
4574 | ||
3a5c3e22 PA |
4575 | /* Determine if the watched values have actually changed, and we |
4576 | should stop. If not, set BS->stop to 0. */ | |
4577 | ||
18a18393 VP |
4578 | static void |
4579 | bpstat_check_watchpoint (bpstat bs) | |
4580 | { | |
2bdf28a0 | 4581 | const struct bp_location *bl; |
3a5c3e22 | 4582 | struct watchpoint *b; |
2bdf28a0 JK |
4583 | |
4584 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4585 | bl = bs->bp_location_at; |
2bdf28a0 | 4586 | gdb_assert (bl != NULL); |
3a5c3e22 | 4587 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4588 | gdb_assert (b != NULL); |
18a18393 | 4589 | |
18a18393 | 4590 | { |
18a18393 VP |
4591 | int must_check_value = 0; |
4592 | ||
3a5c3e22 | 4593 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
4594 | /* For a software watchpoint, we must always check the |
4595 | watched value. */ | |
4596 | must_check_value = 1; | |
4597 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4598 | /* We have a hardware watchpoint (read, write, or access) | |
4599 | and the target earlier reported an address watched by | |
4600 | this watchpoint. */ | |
4601 | must_check_value = 1; | |
4602 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 4603 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
4604 | /* We were stopped by a hardware watchpoint, but the target could |
4605 | not report the data address. We must check the watchpoint's | |
4606 | value. Access and read watchpoints are out of luck; without | |
4607 | a data address, we can't figure it out. */ | |
4608 | must_check_value = 1; | |
3a5c3e22 | 4609 | |
18a18393 VP |
4610 | if (must_check_value) |
4611 | { | |
3e43a32a MS |
4612 | char *message |
4613 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 4614 | b->base.number); |
18a18393 VP |
4615 | struct cleanup *cleanups = make_cleanup (xfree, message); |
4616 | int e = catch_errors (watchpoint_check, bs, message, | |
4617 | RETURN_MASK_ALL); | |
4618 | do_cleanups (cleanups); | |
4619 | switch (e) | |
4620 | { | |
4621 | case WP_DELETED: | |
4622 | /* We've already printed what needs to be printed. */ | |
4623 | bs->print_it = print_it_done; | |
4624 | /* Stop. */ | |
4625 | break; | |
60e1c644 PA |
4626 | case WP_IGNORE: |
4627 | bs->print_it = print_it_noop; | |
4628 | bs->stop = 0; | |
4629 | break; | |
18a18393 | 4630 | case WP_VALUE_CHANGED: |
3a5c3e22 | 4631 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 4632 | { |
85d721b8 PA |
4633 | /* There are two cases to consider here: |
4634 | ||
4a64f543 | 4635 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
4636 | In that case, trust the target, and always report |
4637 | the watchpoint hit to the user. Even though | |
4638 | reads don't cause value changes, the value may | |
4639 | have changed since the last time it was read, and | |
4640 | since we're not trapping writes, we will not see | |
4641 | those, and as such we should ignore our notion of | |
4642 | old value. | |
4643 | ||
4a64f543 | 4644 | 2. We're watching the triggered memory for both |
85d721b8 PA |
4645 | reads and writes. There are two ways this may |
4646 | happen: | |
4647 | ||
4a64f543 | 4648 | 2.1. This is a target that can't break on data |
85d721b8 PA |
4649 | reads only, but can break on accesses (reads or |
4650 | writes), such as e.g., x86. We detect this case | |
4651 | at the time we try to insert read watchpoints. | |
4652 | ||
4a64f543 | 4653 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
4654 | watchpoints, but, the user set an access or write |
4655 | watchpoint watching the same memory as this read | |
4656 | watchpoint. | |
4657 | ||
4658 | If we're watching memory writes as well as reads, | |
4659 | ignore watchpoint hits when we find that the | |
4660 | value hasn't changed, as reads don't cause | |
4661 | changes. This still gives false positives when | |
4662 | the program writes the same value to memory as | |
4663 | what there was already in memory (we will confuse | |
4664 | it for a read), but it's much better than | |
4665 | nothing. */ | |
4666 | ||
4667 | int other_write_watchpoint = 0; | |
4668 | ||
4669 | if (bl->watchpoint_type == hw_read) | |
4670 | { | |
4671 | struct breakpoint *other_b; | |
4672 | ||
4673 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
4674 | if (other_b->type == bp_hardware_watchpoint |
4675 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 4676 | { |
3a5c3e22 PA |
4677 | struct watchpoint *other_w = |
4678 | (struct watchpoint *) other_b; | |
4679 | ||
4680 | if (other_w->watchpoint_triggered | |
4681 | == watch_triggered_yes) | |
4682 | { | |
4683 | other_write_watchpoint = 1; | |
4684 | break; | |
4685 | } | |
85d721b8 PA |
4686 | } |
4687 | } | |
4688 | ||
4689 | if (other_write_watchpoint | |
4690 | || bl->watchpoint_type == hw_access) | |
4691 | { | |
4692 | /* We're watching the same memory for writes, | |
4693 | and the value changed since the last time we | |
4694 | updated it, so this trap must be for a write. | |
4695 | Ignore it. */ | |
4696 | bs->print_it = print_it_noop; | |
4697 | bs->stop = 0; | |
4698 | } | |
18a18393 VP |
4699 | } |
4700 | break; | |
4701 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
4702 | if (b->base.type == bp_hardware_watchpoint |
4703 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
4704 | { |
4705 | /* Don't stop: write watchpoints shouldn't fire if | |
4706 | the value hasn't changed. */ | |
4707 | bs->print_it = print_it_noop; | |
4708 | bs->stop = 0; | |
4709 | } | |
4710 | /* Stop. */ | |
4711 | break; | |
4712 | default: | |
4713 | /* Can't happen. */ | |
4714 | case 0: | |
4715 | /* Error from catch_errors. */ | |
3a5c3e22 | 4716 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 4717 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
4718 | /* We've already printed what needs to be printed. */ |
4719 | bs->print_it = print_it_done; | |
4720 | break; | |
4721 | } | |
4722 | } | |
4723 | else /* must_check_value == 0 */ | |
4724 | { | |
4725 | /* This is a case where some watchpoint(s) triggered, but | |
4726 | not at the address of this watchpoint, or else no | |
4727 | watchpoint triggered after all. So don't print | |
4728 | anything for this watchpoint. */ | |
4729 | bs->print_it = print_it_noop; | |
4730 | bs->stop = 0; | |
4731 | } | |
4732 | } | |
4733 | } | |
4734 | ||
4735 | ||
4736 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4737 | of breakpoint referred to by BS. If we should not stop for this | |
4738 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4739 | |
18a18393 VP |
4740 | static void |
4741 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4742 | { | |
4743 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
4744 | const struct bp_location *bl; |
4745 | struct breakpoint *b; | |
4746 | ||
4747 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4748 | bl = bs->bp_location_at; |
2bdf28a0 | 4749 | gdb_assert (bl != NULL); |
f431efe5 | 4750 | b = bs->breakpoint_at; |
2bdf28a0 | 4751 | gdb_assert (b != NULL); |
18a18393 | 4752 | |
b775012e LM |
4753 | /* Even if the target evaluated the condition on its end and notified GDB, we |
4754 | need to do so again since GDB does not know if we stopped due to a | |
4755 | breakpoint or a single step breakpoint. */ | |
4756 | ||
18a18393 | 4757 | if (frame_id_p (b->frame_id) |
edb3359d | 4758 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4759 | bs->stop = 0; |
4760 | else if (bs->stop) | |
4761 | { | |
4762 | int value_is_zero = 0; | |
60e1c644 PA |
4763 | struct expression *cond; |
4764 | ||
7371cf6d PM |
4765 | /* Evaluate Python breakpoints that have a "stop" |
4766 | method implemented. */ | |
4767 | if (b->py_bp_object) | |
4768 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
4769 | ||
60e1c644 | 4770 | if (is_watchpoint (b)) |
3a5c3e22 PA |
4771 | { |
4772 | struct watchpoint *w = (struct watchpoint *) b; | |
4773 | ||
4774 | cond = w->cond_exp; | |
4775 | } | |
60e1c644 PA |
4776 | else |
4777 | cond = bl->cond; | |
4778 | ||
f431efe5 | 4779 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4780 | { |
60e1c644 | 4781 | int within_current_scope = 1; |
3a5c3e22 | 4782 | struct watchpoint * w; |
60e1c644 | 4783 | |
c5bc3a77 DJ |
4784 | /* We use value_mark and value_free_to_mark because it could |
4785 | be a long time before we return to the command level and | |
4786 | call free_all_values. We can't call free_all_values | |
4787 | because we might be in the middle of evaluating a | |
4788 | function call. */ | |
4789 | struct value *mark = value_mark (); | |
4790 | ||
3a5c3e22 PA |
4791 | if (is_watchpoint (b)) |
4792 | w = (struct watchpoint *) b; | |
4793 | else | |
4794 | w = NULL; | |
4795 | ||
edb3359d DJ |
4796 | /* Need to select the frame, with all that implies so that |
4797 | the conditions will have the right context. Because we | |
4798 | use the frame, we will not see an inlined function's | |
4799 | variables when we arrive at a breakpoint at the start | |
4800 | of the inlined function; the current frame will be the | |
4801 | call site. */ | |
3a5c3e22 | 4802 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
4803 | select_frame (get_current_frame ()); |
4804 | else | |
4805 | { | |
4806 | struct frame_info *frame; | |
4807 | ||
4808 | /* For local watchpoint expressions, which particular | |
4809 | instance of a local is being watched matters, so we | |
4810 | keep track of the frame to evaluate the expression | |
4811 | in. To evaluate the condition however, it doesn't | |
4812 | really matter which instantiation of the function | |
4813 | where the condition makes sense triggers the | |
4814 | watchpoint. This allows an expression like "watch | |
4815 | global if q > 10" set in `func', catch writes to | |
4816 | global on all threads that call `func', or catch | |
4817 | writes on all recursive calls of `func' by a single | |
4818 | thread. We simply always evaluate the condition in | |
4819 | the innermost frame that's executing where it makes | |
4820 | sense to evaluate the condition. It seems | |
4821 | intuitive. */ | |
3a5c3e22 | 4822 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
4823 | if (frame != NULL) |
4824 | select_frame (frame); | |
4825 | else | |
4826 | within_current_scope = 0; | |
4827 | } | |
4828 | if (within_current_scope) | |
4829 | value_is_zero | |
4830 | = catch_errors (breakpoint_cond_eval, cond, | |
4831 | "Error in testing breakpoint condition:\n", | |
4832 | RETURN_MASK_ALL); | |
4833 | else | |
4834 | { | |
4835 | warning (_("Watchpoint condition cannot be tested " | |
4836 | "in the current scope")); | |
4837 | /* If we failed to set the right context for this | |
4838 | watchpoint, unconditionally report it. */ | |
4839 | value_is_zero = 0; | |
4840 | } | |
4a64f543 | 4841 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4842 | value_free_to_mark (mark); |
18a18393 | 4843 | } |
60e1c644 PA |
4844 | |
4845 | if (cond && value_is_zero) | |
18a18393 VP |
4846 | { |
4847 | bs->stop = 0; | |
4848 | } | |
4849 | else if (b->thread != -1 && b->thread != thread_id) | |
4850 | { | |
4851 | bs->stop = 0; | |
4852 | } | |
4853 | else if (b->ignore_count > 0) | |
4854 | { | |
4855 | b->ignore_count--; | |
4856 | annotate_ignore_count_change (); | |
4857 | bs->stop = 0; | |
4a64f543 | 4858 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 4859 | ++(b->hit_count); |
8d3788bd | 4860 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
4861 | } |
4862 | } | |
4863 | } | |
4864 | ||
4865 | ||
9709f61c | 4866 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4867 | BP_ADDR in thread PTID. |
c906108c | 4868 | |
d983da9c | 4869 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4870 | don't understand this stop. Result is a chain of bpstat's such |
4871 | that: | |
c906108c | 4872 | |
c5aa993b | 4873 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4874 | |
c5aa993b | 4875 | if we understand why we stopped, the result is not null. |
c906108c | 4876 | |
c5aa993b JM |
4877 | Each element of the chain refers to a particular breakpoint or |
4878 | watchpoint at which we have stopped. (We may have stopped for | |
4879 | several reasons concurrently.) | |
c906108c | 4880 | |
c5aa993b JM |
4881 | Each element of the chain has valid next, breakpoint_at, |
4882 | commands, FIXME??? fields. */ | |
c906108c SS |
4883 | |
4884 | bpstat | |
6c95b8df | 4885 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
4886 | CORE_ADDR bp_addr, ptid_t ptid, |
4887 | const struct target_waitstatus *ws) | |
c906108c | 4888 | { |
0d381245 | 4889 | struct breakpoint *b = NULL; |
afe38095 | 4890 | struct bp_location *bl; |
20874c92 | 4891 | struct bp_location *loc; |
5760d0ab JK |
4892 | /* First item of allocated bpstat's. */ |
4893 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4894 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4895 | bpstat bs; |
20874c92 | 4896 | int ix; |
429374b8 | 4897 | int need_remove_insert; |
f431efe5 | 4898 | int removed_any; |
c906108c | 4899 | |
f431efe5 PA |
4900 | /* First, build the bpstat chain with locations that explain a |
4901 | target stop, while being careful to not set the target running, | |
4902 | as that may invalidate locations (in particular watchpoint | |
4903 | locations are recreated). Resuming will happen here with | |
4904 | breakpoint conditions or watchpoint expressions that include | |
4905 | inferior function calls. */ | |
c5aa993b | 4906 | |
429374b8 JK |
4907 | ALL_BREAKPOINTS (b) |
4908 | { | |
4909 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4910 | continue; | |
a5606eee | 4911 | |
429374b8 JK |
4912 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4913 | { | |
4a64f543 MS |
4914 | /* For hardware watchpoints, we look only at the first |
4915 | location. The watchpoint_check function will work on the | |
4916 | entire expression, not the individual locations. For | |
4917 | read watchpoints, the watchpoints_triggered function has | |
4918 | checked all locations already. */ | |
429374b8 JK |
4919 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4920 | break; | |
18a18393 | 4921 | |
429374b8 JK |
4922 | if (bl->shlib_disabled) |
4923 | continue; | |
c5aa993b | 4924 | |
09ac7c10 | 4925 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 4926 | continue; |
c5aa993b | 4927 | |
4a64f543 MS |
4928 | /* Come here if it's a watchpoint, or if the break address |
4929 | matches. */ | |
c5aa993b | 4930 | |
4a64f543 MS |
4931 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4932 | explain stop. */ | |
c5aa993b | 4933 | |
f431efe5 PA |
4934 | /* Assume we stop. Should we find a watchpoint that is not |
4935 | actually triggered, or if the condition of the breakpoint | |
4936 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4937 | bs->stop = 1; |
4938 | bs->print = 1; | |
d983da9c | 4939 | |
f431efe5 PA |
4940 | /* If this is a scope breakpoint, mark the associated |
4941 | watchpoint as triggered so that we will handle the | |
4942 | out-of-scope event. We'll get to the watchpoint next | |
4943 | iteration. */ | |
d0fb5eae | 4944 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
4945 | { |
4946 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
4947 | ||
4948 | w->watchpoint_triggered = watch_triggered_yes; | |
4949 | } | |
f431efe5 PA |
4950 | } |
4951 | } | |
4952 | ||
4953 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4954 | { | |
f1310107 | 4955 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 4956 | { |
5760d0ab | 4957 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4958 | /* For hits of moribund locations, we should just proceed. */ |
4959 | bs->stop = 0; | |
4960 | bs->print = 0; | |
4961 | bs->print_it = print_it_noop; | |
4962 | } | |
4963 | } | |
4964 | ||
edcc5120 TT |
4965 | /* A bit of special processing for shlib breakpoints. We need to |
4966 | process solib loading here, so that the lists of loaded and | |
4967 | unloaded libraries are correct before we handle "catch load" and | |
4968 | "catch unload". */ | |
4969 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
4970 | { | |
5d268276 | 4971 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
4972 | { |
4973 | handle_solib_event (); | |
4974 | break; | |
4975 | } | |
4976 | } | |
4977 | ||
f431efe5 PA |
4978 | /* Now go through the locations that caused the target to stop, and |
4979 | check whether we're interested in reporting this stop to higher | |
4980 | layers, or whether we should resume the target transparently. */ | |
4981 | ||
4982 | removed_any = 0; | |
4983 | ||
5760d0ab | 4984 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4985 | { |
4986 | if (!bs->stop) | |
4987 | continue; | |
4988 | ||
f431efe5 | 4989 | b = bs->breakpoint_at; |
348d480f PA |
4990 | b->ops->check_status (bs); |
4991 | if (bs->stop) | |
28010a5d | 4992 | { |
348d480f | 4993 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 4994 | |
429374b8 JK |
4995 | if (bs->stop) |
4996 | { | |
4997 | ++(b->hit_count); | |
8d3788bd | 4998 | observer_notify_breakpoint_modified (b); |
c906108c | 4999 | |
4a64f543 | 5000 | /* We will stop here. */ |
429374b8 JK |
5001 | if (b->disposition == disp_disable) |
5002 | { | |
816338b5 SS |
5003 | --(b->enable_count); |
5004 | if (b->enable_count <= 0 | |
5005 | && b->enable_state != bp_permanent) | |
429374b8 | 5006 | b->enable_state = bp_disabled; |
f431efe5 | 5007 | removed_any = 1; |
429374b8 JK |
5008 | } |
5009 | if (b->silent) | |
5010 | bs->print = 0; | |
5011 | bs->commands = b->commands; | |
9add0f1b | 5012 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5013 | if (command_line_is_silent (bs->commands |
5014 | ? bs->commands->commands : NULL)) | |
5015 | bs->print = 0; | |
429374b8 JK |
5016 | } |
5017 | ||
348d480f | 5018 | } |
a9b3a50f PA |
5019 | |
5020 | /* Print nothing for this entry if we don't stop or don't | |
5021 | print. */ | |
5022 | if (!bs->stop || !bs->print) | |
5023 | bs->print_it = print_it_noop; | |
429374b8 | 5024 | } |
876fa593 | 5025 | |
d983da9c DJ |
5026 | /* If we aren't stopping, the value of some hardware watchpoint may |
5027 | not have changed, but the intermediate memory locations we are | |
5028 | watching may have. Don't bother if we're stopping; this will get | |
5029 | done later. */ | |
d832cb68 | 5030 | need_remove_insert = 0; |
5760d0ab JK |
5031 | if (! bpstat_causes_stop (bs_head)) |
5032 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5033 | if (!bs->stop |
f431efe5 PA |
5034 | && bs->breakpoint_at |
5035 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5036 | { |
3a5c3e22 PA |
5037 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5038 | ||
5039 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5040 | need_remove_insert = 1; |
d983da9c DJ |
5041 | } |
5042 | ||
d832cb68 | 5043 | if (need_remove_insert) |
2d134ed3 | 5044 | update_global_location_list (1); |
f431efe5 PA |
5045 | else if (removed_any) |
5046 | update_global_location_list (0); | |
d832cb68 | 5047 | |
5760d0ab | 5048 | return bs_head; |
c906108c | 5049 | } |
628fe4e4 JK |
5050 | |
5051 | static void | |
5052 | handle_jit_event (void) | |
5053 | { | |
5054 | struct frame_info *frame; | |
5055 | struct gdbarch *gdbarch; | |
5056 | ||
5057 | /* Switch terminal for any messages produced by | |
5058 | breakpoint_re_set. */ | |
5059 | target_terminal_ours_for_output (); | |
5060 | ||
5061 | frame = get_current_frame (); | |
5062 | gdbarch = get_frame_arch (frame); | |
5063 | ||
5064 | jit_event_handler (gdbarch); | |
5065 | ||
5066 | target_terminal_inferior (); | |
5067 | } | |
5068 | ||
edcc5120 TT |
5069 | /* Handle an solib event by calling solib_add. */ |
5070 | ||
5071 | void | |
5072 | handle_solib_event (void) | |
5073 | { | |
5074 | clear_program_space_solib_cache (current_inferior ()->pspace); | |
5075 | ||
5076 | /* Check for any newly added shared libraries if we're supposed to | |
5077 | be adding them automatically. Switch terminal for any messages | |
5078 | produced by breakpoint_re_set. */ | |
5079 | target_terminal_ours_for_output (); | |
5080 | #ifdef SOLIB_ADD | |
5081 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
5082 | #else | |
5083 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
5084 | #endif | |
5085 | target_terminal_inferior (); | |
5086 | } | |
5087 | ||
628fe4e4 JK |
5088 | /* Prepare WHAT final decision for infrun. */ |
5089 | ||
5090 | /* Decide what infrun needs to do with this bpstat. */ | |
5091 | ||
c906108c | 5092 | struct bpstat_what |
0e30163f | 5093 | bpstat_what (bpstat bs_head) |
c906108c | 5094 | { |
c906108c | 5095 | struct bpstat_what retval; |
628fe4e4 | 5096 | int jit_event = 0; |
0e30163f | 5097 | bpstat bs; |
c906108c | 5098 | |
628fe4e4 | 5099 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5100 | retval.call_dummy = STOP_NONE; |
186c406b | 5101 | retval.is_longjmp = 0; |
628fe4e4 | 5102 | |
0e30163f | 5103 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5104 | { |
628fe4e4 JK |
5105 | /* Extract this BS's action. After processing each BS, we check |
5106 | if its action overrides all we've seem so far. */ | |
5107 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5108 | enum bptype bptype; | |
5109 | ||
c906108c | 5110 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5111 | { |
5112 | /* I suspect this can happen if it was a momentary | |
5113 | breakpoint which has since been deleted. */ | |
5114 | bptype = bp_none; | |
5115 | } | |
20874c92 | 5116 | else |
f431efe5 | 5117 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5118 | |
5119 | switch (bptype) | |
c906108c SS |
5120 | { |
5121 | case bp_none: | |
628fe4e4 | 5122 | break; |
c906108c SS |
5123 | case bp_breakpoint: |
5124 | case bp_hardware_breakpoint: | |
5125 | case bp_until: | |
5126 | case bp_finish: | |
a9b3a50f | 5127 | case bp_shlib_event: |
c906108c SS |
5128 | if (bs->stop) |
5129 | { | |
5130 | if (bs->print) | |
628fe4e4 | 5131 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5132 | else |
628fe4e4 | 5133 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5134 | } |
5135 | else | |
628fe4e4 | 5136 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5137 | break; |
5138 | case bp_watchpoint: | |
5139 | case bp_hardware_watchpoint: | |
5140 | case bp_read_watchpoint: | |
5141 | case bp_access_watchpoint: | |
5142 | if (bs->stop) | |
5143 | { | |
5144 | if (bs->print) | |
628fe4e4 | 5145 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5146 | else |
628fe4e4 | 5147 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5148 | } |
5149 | else | |
628fe4e4 JK |
5150 | { |
5151 | /* There was a watchpoint, but we're not stopping. | |
5152 | This requires no further action. */ | |
5153 | } | |
c906108c SS |
5154 | break; |
5155 | case bp_longjmp: | |
e2e4d78b | 5156 | case bp_longjmp_call_dummy: |
186c406b | 5157 | case bp_exception: |
628fe4e4 | 5158 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5159 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5160 | break; |
5161 | case bp_longjmp_resume: | |
186c406b | 5162 | case bp_exception_resume: |
628fe4e4 | 5163 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5164 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5165 | break; |
5166 | case bp_step_resume: | |
5167 | if (bs->stop) | |
628fe4e4 JK |
5168 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5169 | else | |
c906108c | 5170 | { |
628fe4e4 JK |
5171 | /* It is for the wrong frame. */ |
5172 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5173 | } |
c906108c | 5174 | break; |
2c03e5be PA |
5175 | case bp_hp_step_resume: |
5176 | if (bs->stop) | |
5177 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5178 | else | |
5179 | { | |
5180 | /* It is for the wrong frame. */ | |
5181 | this_action = BPSTAT_WHAT_SINGLE; | |
5182 | } | |
5183 | break; | |
c906108c | 5184 | case bp_watchpoint_scope: |
c4093a6a | 5185 | case bp_thread_event: |
1900040c | 5186 | case bp_overlay_event: |
0fd8e87f | 5187 | case bp_longjmp_master: |
aa7d318d | 5188 | case bp_std_terminate_master: |
186c406b | 5189 | case bp_exception_master: |
628fe4e4 | 5190 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5191 | break; |
ce78b96d | 5192 | case bp_catchpoint: |
c5aa993b JM |
5193 | if (bs->stop) |
5194 | { | |
5195 | if (bs->print) | |
628fe4e4 | 5196 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5197 | else |
628fe4e4 | 5198 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5199 | } |
5200 | else | |
628fe4e4 JK |
5201 | { |
5202 | /* There was a catchpoint, but we're not stopping. | |
5203 | This requires no further action. */ | |
5204 | } | |
5205 | break; | |
628fe4e4 JK |
5206 | case bp_jit_event: |
5207 | jit_event = 1; | |
5208 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5209 | break; |
c906108c | 5210 | case bp_call_dummy: |
53a5351d JM |
5211 | /* Make sure the action is stop (silent or noisy), |
5212 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5213 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5214 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5215 | break; |
5216 | case bp_std_terminate: | |
5217 | /* Make sure the action is stop (silent or noisy), | |
5218 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5219 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5220 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5221 | break; |
1042e4c0 | 5222 | case bp_tracepoint: |
7a697b8d | 5223 | case bp_fast_tracepoint: |
0fb4aa4b | 5224 | case bp_static_tracepoint: |
1042e4c0 SS |
5225 | /* Tracepoint hits should not be reported back to GDB, and |
5226 | if one got through somehow, it should have been filtered | |
5227 | out already. */ | |
5228 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5229 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5230 | break; |
5231 | case bp_gnu_ifunc_resolver: | |
5232 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5233 | this_action = BPSTAT_WHAT_SINGLE; | |
5234 | break; | |
5235 | case bp_gnu_ifunc_resolver_return: | |
5236 | /* The breakpoint will be removed, execution will restart from the | |
5237 | PC of the former breakpoint. */ | |
5238 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5239 | break; | |
e7e0cddf SS |
5240 | |
5241 | case bp_dprintf: | |
5242 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5243 | break; | |
5244 | ||
628fe4e4 JK |
5245 | default: |
5246 | internal_error (__FILE__, __LINE__, | |
5247 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5248 | } |
628fe4e4 JK |
5249 | |
5250 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5251 | } |
628fe4e4 | 5252 | |
0e30163f JK |
5253 | /* These operations may affect the bs->breakpoint_at state so they are |
5254 | delayed after MAIN_ACTION is decided above. */ | |
5255 | ||
628fe4e4 JK |
5256 | if (jit_event) |
5257 | { | |
5258 | if (debug_infrun) | |
5259 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5260 | ||
5261 | handle_jit_event (); | |
5262 | } | |
5263 | ||
0e30163f JK |
5264 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5265 | { | |
5266 | struct breakpoint *b = bs->breakpoint_at; | |
5267 | ||
5268 | if (b == NULL) | |
5269 | continue; | |
5270 | switch (b->type) | |
5271 | { | |
5272 | case bp_gnu_ifunc_resolver: | |
5273 | gnu_ifunc_resolver_stop (b); | |
5274 | break; | |
5275 | case bp_gnu_ifunc_resolver_return: | |
5276 | gnu_ifunc_resolver_return_stop (b); | |
5277 | break; | |
5278 | } | |
5279 | } | |
5280 | ||
c906108c SS |
5281 | return retval; |
5282 | } | |
5283 | ||
5284 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5285 | without hardware support). This isn't related to a specific bpstat, | |
5286 | just to things like whether watchpoints are set. */ | |
5287 | ||
c5aa993b | 5288 | int |
fba45db2 | 5289 | bpstat_should_step (void) |
c906108c SS |
5290 | { |
5291 | struct breakpoint *b; | |
cc59ec59 | 5292 | |
c906108c | 5293 | ALL_BREAKPOINTS (b) |
717a8278 | 5294 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5295 | return 1; |
c906108c SS |
5296 | return 0; |
5297 | } | |
5298 | ||
67822962 PA |
5299 | int |
5300 | bpstat_causes_stop (bpstat bs) | |
5301 | { | |
5302 | for (; bs != NULL; bs = bs->next) | |
5303 | if (bs->stop) | |
5304 | return 1; | |
5305 | ||
5306 | return 0; | |
5307 | } | |
5308 | ||
c906108c | 5309 | \f |
c5aa993b | 5310 | |
170b53b2 UW |
5311 | /* Compute a string of spaces suitable to indent the next line |
5312 | so it starts at the position corresponding to the table column | |
5313 | named COL_NAME in the currently active table of UIOUT. */ | |
5314 | ||
5315 | static char * | |
5316 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5317 | { | |
5318 | static char wrap_indent[80]; | |
5319 | int i, total_width, width, align; | |
5320 | char *text; | |
5321 | ||
5322 | total_width = 0; | |
5323 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5324 | { | |
5325 | if (strcmp (text, col_name) == 0) | |
5326 | { | |
5327 | gdb_assert (total_width < sizeof wrap_indent); | |
5328 | memset (wrap_indent, ' ', total_width); | |
5329 | wrap_indent[total_width] = 0; | |
5330 | ||
5331 | return wrap_indent; | |
5332 | } | |
5333 | ||
5334 | total_width += width + 1; | |
5335 | } | |
5336 | ||
5337 | return NULL; | |
5338 | } | |
5339 | ||
b775012e LM |
5340 | /* Determine if the locations of this breakpoint will have their conditions |
5341 | evaluated by the target, host or a mix of both. Returns the following: | |
5342 | ||
5343 | "host": Host evals condition. | |
5344 | "host or target": Host or Target evals condition. | |
5345 | "target": Target evals condition. | |
5346 | */ | |
5347 | ||
5348 | static const char * | |
5349 | bp_condition_evaluator (struct breakpoint *b) | |
5350 | { | |
5351 | struct bp_location *bl; | |
5352 | char host_evals = 0; | |
5353 | char target_evals = 0; | |
5354 | ||
5355 | if (!b) | |
5356 | return NULL; | |
5357 | ||
5358 | if (!is_breakpoint (b)) | |
5359 | return NULL; | |
5360 | ||
5361 | if (gdb_evaluates_breakpoint_condition_p () | |
5362 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5363 | return condition_evaluation_host; | |
5364 | ||
5365 | for (bl = b->loc; bl; bl = bl->next) | |
5366 | { | |
5367 | if (bl->cond_bytecode) | |
5368 | target_evals++; | |
5369 | else | |
5370 | host_evals++; | |
5371 | } | |
5372 | ||
5373 | if (host_evals && target_evals) | |
5374 | return condition_evaluation_both; | |
5375 | else if (target_evals) | |
5376 | return condition_evaluation_target; | |
5377 | else | |
5378 | return condition_evaluation_host; | |
5379 | } | |
5380 | ||
5381 | /* Determine the breakpoint location's condition evaluator. This is | |
5382 | similar to bp_condition_evaluator, but for locations. */ | |
5383 | ||
5384 | static const char * | |
5385 | bp_location_condition_evaluator (struct bp_location *bl) | |
5386 | { | |
5387 | if (bl && !is_breakpoint (bl->owner)) | |
5388 | return NULL; | |
5389 | ||
5390 | if (gdb_evaluates_breakpoint_condition_p () | |
5391 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5392 | return condition_evaluation_host; | |
5393 | ||
5394 | if (bl && bl->cond_bytecode) | |
5395 | return condition_evaluation_target; | |
5396 | else | |
5397 | return condition_evaluation_host; | |
5398 | } | |
5399 | ||
859825b8 JK |
5400 | /* Print the LOC location out of the list of B->LOC locations. */ |
5401 | ||
170b53b2 UW |
5402 | static void |
5403 | print_breakpoint_location (struct breakpoint *b, | |
5404 | struct bp_location *loc) | |
0d381245 | 5405 | { |
79a45e25 | 5406 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
5407 | struct cleanup *old_chain = save_current_program_space (); |
5408 | ||
859825b8 JK |
5409 | if (loc != NULL && loc->shlib_disabled) |
5410 | loc = NULL; | |
5411 | ||
6c95b8df PA |
5412 | if (loc != NULL) |
5413 | set_current_program_space (loc->pspace); | |
5414 | ||
56435ebe TT |
5415 | if (b->display_canonical) |
5416 | ui_out_field_string (uiout, "what", b->addr_string); | |
f8eba3c6 | 5417 | else if (loc && loc->source_file) |
0d381245 VP |
5418 | { |
5419 | struct symbol *sym | |
5420 | = find_pc_sect_function (loc->address, loc->section); | |
5421 | if (sym) | |
5422 | { | |
5423 | ui_out_text (uiout, "in "); | |
5424 | ui_out_field_string (uiout, "func", | |
5425 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
5426 | ui_out_text (uiout, " "); |
5427 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
5428 | ui_out_text (uiout, "at "); | |
0d381245 | 5429 | } |
f8eba3c6 | 5430 | ui_out_field_string (uiout, "file", loc->source_file); |
0d381245 VP |
5431 | ui_out_text (uiout, ":"); |
5432 | ||
5433 | if (ui_out_is_mi_like_p (uiout)) | |
5434 | { | |
5435 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
5436 | char *fullname = symtab_to_fullname (sal.symtab); | |
5437 | ||
5438 | if (fullname) | |
5439 | ui_out_field_string (uiout, "fullname", fullname); | |
5440 | } | |
5441 | ||
f8eba3c6 | 5442 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 5443 | } |
859825b8 | 5444 | else if (loc) |
0d381245 | 5445 | { |
f99d8bf4 PA |
5446 | struct ui_file *stb = mem_fileopen (); |
5447 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 5448 | |
f99d8bf4 | 5449 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 5450 | demangle, ""); |
0d381245 | 5451 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
5452 | |
5453 | do_cleanups (stb_chain); | |
0d381245 | 5454 | } |
859825b8 JK |
5455 | else |
5456 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 5457 | |
b775012e LM |
5458 | if (loc && is_breakpoint (b) |
5459 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5460 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5461 | { | |
5462 | ui_out_text (uiout, " ("); | |
5463 | ui_out_field_string (uiout, "evaluated-by", | |
5464 | bp_location_condition_evaluator (loc)); | |
5465 | ui_out_text (uiout, ")"); | |
5466 | } | |
5467 | ||
6c95b8df | 5468 | do_cleanups (old_chain); |
0d381245 VP |
5469 | } |
5470 | ||
269b11a2 PA |
5471 | static const char * |
5472 | bptype_string (enum bptype type) | |
c906108c | 5473 | { |
c4093a6a JM |
5474 | struct ep_type_description |
5475 | { | |
5476 | enum bptype type; | |
5477 | char *description; | |
5478 | }; | |
5479 | static struct ep_type_description bptypes[] = | |
c906108c | 5480 | { |
c5aa993b JM |
5481 | {bp_none, "?deleted?"}, |
5482 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5483 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
5484 | {bp_until, "until"}, |
5485 | {bp_finish, "finish"}, | |
5486 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5487 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5488 | {bp_read_watchpoint, "read watchpoint"}, |
5489 | {bp_access_watchpoint, "acc watchpoint"}, | |
5490 | {bp_longjmp, "longjmp"}, | |
5491 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5492 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5493 | {bp_exception, "exception"}, |
5494 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5495 | {bp_step_resume, "step resume"}, |
2c03e5be | 5496 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5497 | {bp_watchpoint_scope, "watchpoint scope"}, |
5498 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5499 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5500 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5501 | {bp_thread_event, "thread events"}, |
1900040c | 5502 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5503 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5504 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5505 | {bp_exception_master, "exception master"}, |
ce78b96d | 5506 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5507 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5508 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5509 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5510 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5511 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5512 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5513 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5514 | }; |
269b11a2 PA |
5515 | |
5516 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5517 | || ((int) type != bptypes[(int) type].type)) | |
5518 | internal_error (__FILE__, __LINE__, | |
5519 | _("bptypes table does not describe type #%d."), | |
5520 | (int) type); | |
5521 | ||
5522 | return bptypes[(int) type].description; | |
5523 | } | |
5524 | ||
5525 | /* Print B to gdb_stdout. */ | |
5526 | ||
5527 | static void | |
5528 | print_one_breakpoint_location (struct breakpoint *b, | |
5529 | struct bp_location *loc, | |
5530 | int loc_number, | |
5531 | struct bp_location **last_loc, | |
269b11a2 PA |
5532 | int allflag) |
5533 | { | |
5534 | struct command_line *l; | |
c2c6d25f | 5535 | static char bpenables[] = "nynny"; |
c906108c | 5536 | |
79a45e25 | 5537 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5538 | int header_of_multiple = 0; |
5539 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5540 | struct value_print_options opts; |
5541 | ||
5542 | get_user_print_options (&opts); | |
0d381245 VP |
5543 | |
5544 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5545 | /* See comment in print_one_breakpoint concerning treatment of |
5546 | breakpoints with single disabled location. */ | |
0d381245 VP |
5547 | if (loc == NULL |
5548 | && (b->loc != NULL | |
5549 | && (b->loc->next != NULL || !b->loc->enabled))) | |
5550 | header_of_multiple = 1; | |
5551 | if (loc == NULL) | |
5552 | loc = b->loc; | |
5553 | ||
c4093a6a JM |
5554 | annotate_record (); |
5555 | ||
5556 | /* 1 */ | |
5557 | annotate_field (0); | |
0d381245 VP |
5558 | if (part_of_multiple) |
5559 | { | |
5560 | char *formatted; | |
0c6773c1 | 5561 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
5562 | ui_out_field_string (uiout, "number", formatted); |
5563 | xfree (formatted); | |
5564 | } | |
5565 | else | |
5566 | { | |
5567 | ui_out_field_int (uiout, "number", b->number); | |
5568 | } | |
c4093a6a JM |
5569 | |
5570 | /* 2 */ | |
5571 | annotate_field (1); | |
0d381245 VP |
5572 | if (part_of_multiple) |
5573 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
5574 | else |
5575 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
5576 | |
5577 | /* 3 */ | |
5578 | annotate_field (2); | |
0d381245 VP |
5579 | if (part_of_multiple) |
5580 | ui_out_field_skip (uiout, "disp"); | |
5581 | else | |
2cec12e5 | 5582 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 5583 | |
c4093a6a JM |
5584 | |
5585 | /* 4 */ | |
5586 | annotate_field (3); | |
0d381245 | 5587 | if (part_of_multiple) |
54e52265 | 5588 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 5589 | else |
4a64f543 MS |
5590 | ui_out_field_fmt (uiout, "enabled", "%c", |
5591 | bpenables[(int) b->enable_state]); | |
54e52265 | 5592 | ui_out_spaces (uiout, 2); |
0d381245 | 5593 | |
c4093a6a JM |
5594 | |
5595 | /* 5 and 6 */ | |
3086aeae | 5596 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 5597 | { |
4a64f543 MS |
5598 | /* Although the print_one can possibly print all locations, |
5599 | calling it here is not likely to get any nice result. So, | |
5600 | make sure there's just one location. */ | |
0d381245 | 5601 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 5602 | b->ops->print_one (b, last_loc); |
0d381245 | 5603 | } |
3086aeae DJ |
5604 | else |
5605 | switch (b->type) | |
5606 | { | |
5607 | case bp_none: | |
5608 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 5609 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 5610 | break; |
c906108c | 5611 | |
3086aeae DJ |
5612 | case bp_watchpoint: |
5613 | case bp_hardware_watchpoint: | |
5614 | case bp_read_watchpoint: | |
5615 | case bp_access_watchpoint: | |
3a5c3e22 PA |
5616 | { |
5617 | struct watchpoint *w = (struct watchpoint *) b; | |
5618 | ||
5619 | /* Field 4, the address, is omitted (which makes the columns | |
5620 | not line up too nicely with the headers, but the effect | |
5621 | is relatively readable). */ | |
5622 | if (opts.addressprint) | |
5623 | ui_out_field_skip (uiout, "addr"); | |
5624 | annotate_field (5); | |
5625 | ui_out_field_string (uiout, "what", w->exp_string); | |
5626 | } | |
3086aeae DJ |
5627 | break; |
5628 | ||
3086aeae DJ |
5629 | case bp_breakpoint: |
5630 | case bp_hardware_breakpoint: | |
5631 | case bp_until: | |
5632 | case bp_finish: | |
5633 | case bp_longjmp: | |
5634 | case bp_longjmp_resume: | |
e2e4d78b | 5635 | case bp_longjmp_call_dummy: |
186c406b TT |
5636 | case bp_exception: |
5637 | case bp_exception_resume: | |
3086aeae | 5638 | case bp_step_resume: |
2c03e5be | 5639 | case bp_hp_step_resume: |
3086aeae DJ |
5640 | case bp_watchpoint_scope: |
5641 | case bp_call_dummy: | |
aa7d318d | 5642 | case bp_std_terminate: |
3086aeae DJ |
5643 | case bp_shlib_event: |
5644 | case bp_thread_event: | |
5645 | case bp_overlay_event: | |
0fd8e87f | 5646 | case bp_longjmp_master: |
aa7d318d | 5647 | case bp_std_terminate_master: |
186c406b | 5648 | case bp_exception_master: |
1042e4c0 | 5649 | case bp_tracepoint: |
7a697b8d | 5650 | case bp_fast_tracepoint: |
0fb4aa4b | 5651 | case bp_static_tracepoint: |
e7e0cddf | 5652 | case bp_dprintf: |
4efc6507 | 5653 | case bp_jit_event: |
0e30163f JK |
5654 | case bp_gnu_ifunc_resolver: |
5655 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 5656 | if (opts.addressprint) |
3086aeae DJ |
5657 | { |
5658 | annotate_field (4); | |
54e52265 | 5659 | if (header_of_multiple) |
0d381245 | 5660 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 5661 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 5662 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 5663 | else |
5af949e3 UW |
5664 | ui_out_field_core_addr (uiout, "addr", |
5665 | loc->gdbarch, loc->address); | |
3086aeae DJ |
5666 | } |
5667 | annotate_field (5); | |
0d381245 | 5668 | if (!header_of_multiple) |
170b53b2 | 5669 | print_breakpoint_location (b, loc); |
0d381245 | 5670 | if (b->loc) |
a6d9a66e | 5671 | *last_loc = b->loc; |
3086aeae DJ |
5672 | break; |
5673 | } | |
c906108c | 5674 | |
6c95b8df PA |
5675 | |
5676 | /* For backward compatibility, don't display inferiors unless there | |
5677 | are several. */ | |
5678 | if (loc != NULL | |
5679 | && !header_of_multiple | |
5680 | && (allflag | |
5681 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
5682 | && (number_of_program_spaces () > 1 | |
5683 | || number_of_inferiors () > 1) | |
4a64f543 MS |
5684 | /* LOC is for existing B, it cannot be in |
5685 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
5686 | && loc->owner->type != bp_catchpoint))) |
5687 | { | |
5688 | struct inferior *inf; | |
5689 | int first = 1; | |
5690 | ||
5691 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
5692 | { | |
5693 | if (inf->pspace == loc->pspace) | |
5694 | { | |
5695 | if (first) | |
5696 | { | |
5697 | first = 0; | |
5698 | ui_out_text (uiout, " inf "); | |
5699 | } | |
5700 | else | |
5701 | ui_out_text (uiout, ", "); | |
5702 | ui_out_text (uiout, plongest (inf->num)); | |
5703 | } | |
5704 | } | |
5705 | } | |
5706 | ||
4a306c9a | 5707 | if (!part_of_multiple) |
c4093a6a | 5708 | { |
4a306c9a JB |
5709 | if (b->thread != -1) |
5710 | { | |
5711 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 5712 | "stop only in" line a little further down. */ |
4a306c9a JB |
5713 | ui_out_text (uiout, " thread "); |
5714 | ui_out_field_int (uiout, "thread", b->thread); | |
5715 | } | |
5716 | else if (b->task != 0) | |
5717 | { | |
5718 | ui_out_text (uiout, " task "); | |
5719 | ui_out_field_int (uiout, "task", b->task); | |
5720 | } | |
c4093a6a | 5721 | } |
f1310107 | 5722 | |
8b93c638 | 5723 | ui_out_text (uiout, "\n"); |
f1310107 | 5724 | |
348d480f | 5725 | if (!part_of_multiple) |
f1310107 TJB |
5726 | b->ops->print_one_detail (b, uiout); |
5727 | ||
0d381245 | 5728 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
5729 | { |
5730 | annotate_field (6); | |
8b93c638 | 5731 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 5732 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 5733 | the frame ID. */ |
5af949e3 UW |
5734 | ui_out_field_core_addr (uiout, "frame", |
5735 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 5736 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
5737 | } |
5738 | ||
28010a5d | 5739 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
5740 | { |
5741 | annotate_field (7); | |
d77f58be | 5742 | if (is_tracepoint (b)) |
1042e4c0 SS |
5743 | ui_out_text (uiout, "\ttrace only if "); |
5744 | else | |
5745 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 5746 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
5747 | |
5748 | /* Print whether the target is doing the breakpoint's condition | |
5749 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
5750 | if (is_breakpoint (b) | |
5751 | && breakpoint_condition_evaluation_mode () | |
5752 | == condition_evaluation_target) | |
5753 | { | |
5754 | ui_out_text (uiout, " ("); | |
5755 | ui_out_field_string (uiout, "evaluated-by", | |
5756 | bp_condition_evaluator (b)); | |
5757 | ui_out_text (uiout, " evals)"); | |
5758 | } | |
0101ce28 JJ |
5759 | ui_out_text (uiout, "\n"); |
5760 | } | |
5761 | ||
0d381245 | 5762 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 5763 | { |
4a64f543 | 5764 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
5765 | ui_out_text (uiout, "\tstop only in thread "); |
5766 | ui_out_field_int (uiout, "thread", b->thread); | |
5767 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
5768 | } |
5769 | ||
63c715c6 | 5770 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 5771 | { |
4a64f543 | 5772 | /* FIXME should make an annotation for this. */ |
c326b90e | 5773 | if (is_catchpoint (b)) |
8b93c638 | 5774 | ui_out_text (uiout, "\tcatchpoint"); |
f196051f SS |
5775 | else if (is_tracepoint (b)) |
5776 | ui_out_text (uiout, "\ttracepoint"); | |
8b93c638 JM |
5777 | else |
5778 | ui_out_text (uiout, "\tbreakpoint"); | |
5779 | ui_out_text (uiout, " already hit "); | |
5780 | ui_out_field_int (uiout, "times", b->hit_count); | |
5781 | if (b->hit_count == 1) | |
5782 | ui_out_text (uiout, " time\n"); | |
5783 | else | |
5784 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
5785 | } |
5786 | ||
4a64f543 MS |
5787 | /* Output the count also if it is zero, but only if this is mi. |
5788 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 5789 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 5790 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 5791 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 5792 | |
0d381245 | 5793 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
5794 | { |
5795 | annotate_field (8); | |
8b93c638 JM |
5796 | ui_out_text (uiout, "\tignore next "); |
5797 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
5798 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 5799 | } |
059fb39f | 5800 | |
816338b5 SS |
5801 | /* Note that an enable count of 1 corresponds to "enable once" |
5802 | behavior, which is reported by the combination of enablement and | |
5803 | disposition, so we don't need to mention it here. */ | |
5804 | if (!part_of_multiple && b->enable_count > 1) | |
5805 | { | |
5806 | annotate_field (8); | |
5807 | ui_out_text (uiout, "\tdisable after "); | |
5808 | /* Tweak the wording to clarify that ignore and enable counts | |
5809 | are distinct, and have additive effect. */ | |
5810 | if (b->ignore_count) | |
5811 | ui_out_text (uiout, "additional "); | |
5812 | else | |
5813 | ui_out_text (uiout, "next "); | |
5814 | ui_out_field_int (uiout, "enable", b->enable_count); | |
5815 | ui_out_text (uiout, " hits\n"); | |
5816 | } | |
5817 | ||
f196051f SS |
5818 | if (!part_of_multiple && is_tracepoint (b)) |
5819 | { | |
5820 | struct tracepoint *tp = (struct tracepoint *) b; | |
5821 | ||
5822 | if (tp->traceframe_usage) | |
5823 | { | |
5824 | ui_out_text (uiout, "\ttrace buffer usage "); | |
5825 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
5826 | ui_out_text (uiout, " bytes\n"); | |
5827 | } | |
5828 | } | |
5829 | ||
9add0f1b | 5830 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 5831 | if (!part_of_multiple && l) |
c4093a6a | 5832 | { |
3b31d625 EZ |
5833 | struct cleanup *script_chain; |
5834 | ||
c4093a6a | 5835 | annotate_field (9); |
3b31d625 | 5836 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 5837 | print_command_lines (uiout, l, 4); |
3b31d625 | 5838 | do_cleanups (script_chain); |
c4093a6a | 5839 | } |
d24317b4 | 5840 | |
d9b3f62e | 5841 | if (is_tracepoint (b)) |
1042e4c0 | 5842 | { |
d9b3f62e PA |
5843 | struct tracepoint *t = (struct tracepoint *) b; |
5844 | ||
5845 | if (!part_of_multiple && t->pass_count) | |
5846 | { | |
5847 | annotate_field (10); | |
5848 | ui_out_text (uiout, "\tpass count "); | |
5849 | ui_out_field_int (uiout, "pass", t->pass_count); | |
5850 | ui_out_text (uiout, " \n"); | |
5851 | } | |
1042e4c0 SS |
5852 | } |
5853 | ||
d24317b4 VP |
5854 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
5855 | { | |
3a5c3e22 PA |
5856 | if (is_watchpoint (b)) |
5857 | { | |
5858 | struct watchpoint *w = (struct watchpoint *) b; | |
5859 | ||
5860 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
5861 | } | |
5862 | else if (b->addr_string) | |
d24317b4 | 5863 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 5864 | } |
c4093a6a | 5865 | } |
c5aa993b | 5866 | |
0d381245 VP |
5867 | static void |
5868 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 5869 | struct bp_location **last_loc, |
6c95b8df | 5870 | int allflag) |
0d381245 | 5871 | { |
8d3788bd | 5872 | struct cleanup *bkpt_chain; |
79a45e25 | 5873 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
5874 | |
5875 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
5876 | ||
12c5a436 | 5877 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 5878 | do_cleanups (bkpt_chain); |
0d381245 VP |
5879 | |
5880 | /* If this breakpoint has custom print function, | |
5881 | it's already printed. Otherwise, print individual | |
5882 | locations, if any. */ | |
5883 | if (b->ops == NULL || b->ops->print_one == NULL) | |
5884 | { | |
4a64f543 MS |
5885 | /* If breakpoint has a single location that is disabled, we |
5886 | print it as if it had several locations, since otherwise it's | |
5887 | hard to represent "breakpoint enabled, location disabled" | |
5888 | situation. | |
5889 | ||
5890 | Note that while hardware watchpoints have several locations | |
a3be7890 | 5891 | internally, that's not a property exposed to user. */ |
0d381245 | 5892 | if (b->loc |
a5606eee | 5893 | && !is_hardware_watchpoint (b) |
8d3788bd | 5894 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
5895 | { |
5896 | struct bp_location *loc; | |
5897 | int n = 1; | |
8d3788bd | 5898 | |
0d381245 | 5899 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
5900 | { |
5901 | struct cleanup *inner2 = | |
5902 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
5903 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
5904 | do_cleanups (inner2); | |
5905 | } | |
0d381245 VP |
5906 | } |
5907 | } | |
5908 | } | |
5909 | ||
a6d9a66e UW |
5910 | static int |
5911 | breakpoint_address_bits (struct breakpoint *b) | |
5912 | { | |
5913 | int print_address_bits = 0; | |
5914 | struct bp_location *loc; | |
5915 | ||
5916 | for (loc = b->loc; loc; loc = loc->next) | |
5917 | { | |
c7437ca6 PA |
5918 | int addr_bit; |
5919 | ||
5920 | /* Software watchpoints that aren't watching memory don't have | |
5921 | an address to print. */ | |
5922 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
5923 | continue; | |
5924 | ||
5925 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
5926 | if (addr_bit > print_address_bits) |
5927 | print_address_bits = addr_bit; | |
5928 | } | |
5929 | ||
5930 | return print_address_bits; | |
5931 | } | |
0d381245 | 5932 | |
c4093a6a JM |
5933 | struct captured_breakpoint_query_args |
5934 | { | |
5935 | int bnum; | |
5936 | }; | |
c5aa993b | 5937 | |
c4093a6a | 5938 | static int |
2b65245e | 5939 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
5940 | { |
5941 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 5942 | struct breakpoint *b; |
a6d9a66e | 5943 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 5944 | |
c4093a6a JM |
5945 | ALL_BREAKPOINTS (b) |
5946 | { | |
5947 | if (args->bnum == b->number) | |
c5aa993b | 5948 | { |
12c5a436 | 5949 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 5950 | return GDB_RC_OK; |
c5aa993b | 5951 | } |
c4093a6a JM |
5952 | } |
5953 | return GDB_RC_NONE; | |
5954 | } | |
c5aa993b | 5955 | |
c4093a6a | 5956 | enum gdb_rc |
4a64f543 MS |
5957 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5958 | char **error_message) | |
c4093a6a JM |
5959 | { |
5960 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5961 | |
c4093a6a JM |
5962 | args.bnum = bnum; |
5963 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5964 | an error. */ |
b0b13bb4 DJ |
5965 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5966 | error_message, RETURN_MASK_ALL) < 0) | |
5967 | return GDB_RC_FAIL; | |
5968 | else | |
5969 | return GDB_RC_OK; | |
c4093a6a | 5970 | } |
c5aa993b | 5971 | |
09d682a4 TT |
5972 | /* Return true if this breakpoint was set by the user, false if it is |
5973 | internal or momentary. */ | |
5974 | ||
5975 | int | |
5976 | user_breakpoint_p (struct breakpoint *b) | |
5977 | { | |
46c6471b | 5978 | return b->number > 0; |
09d682a4 TT |
5979 | } |
5980 | ||
7f3b0473 | 5981 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5982 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5983 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5984 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5985 | ones for which it returns non-zero. Return the total number of | |
5986 | breakpoints listed. */ | |
c906108c | 5987 | |
d77f58be | 5988 | static int |
e5a67952 | 5989 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5990 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5991 | { |
52f0bd74 | 5992 | struct breakpoint *b; |
a6d9a66e | 5993 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5994 | int nr_printable_breakpoints; |
3b31d625 | 5995 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5996 | struct value_print_options opts; |
a6d9a66e | 5997 | int print_address_bits = 0; |
269b11a2 | 5998 | int print_type_col_width = 14; |
79a45e25 | 5999 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6000 | |
79a45b7d TT |
6001 | get_user_print_options (&opts); |
6002 | ||
4a64f543 MS |
6003 | /* Compute the number of rows in the table, as well as the size |
6004 | required for address fields. */ | |
7f3b0473 AC |
6005 | nr_printable_breakpoints = 0; |
6006 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6007 | { |
6008 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6009 | if (filter && !filter (b)) | |
6010 | continue; | |
6011 | ||
6012 | /* If we have an "args" string, it is a list of breakpoints to | |
6013 | accept. Skip the others. */ | |
6014 | if (args != NULL && *args != '\0') | |
6015 | { | |
6016 | if (allflag && parse_and_eval_long (args) != b->number) | |
6017 | continue; | |
6018 | if (!allflag && !number_is_in_list (args, b->number)) | |
6019 | continue; | |
6020 | } | |
269b11a2 | 6021 | |
e5a67952 MS |
6022 | if (allflag || user_breakpoint_p (b)) |
6023 | { | |
6024 | int addr_bit, type_len; | |
a6d9a66e | 6025 | |
e5a67952 MS |
6026 | addr_bit = breakpoint_address_bits (b); |
6027 | if (addr_bit > print_address_bits) | |
6028 | print_address_bits = addr_bit; | |
269b11a2 | 6029 | |
e5a67952 MS |
6030 | type_len = strlen (bptype_string (b->type)); |
6031 | if (type_len > print_type_col_width) | |
6032 | print_type_col_width = type_len; | |
6033 | ||
6034 | nr_printable_breakpoints++; | |
6035 | } | |
6036 | } | |
7f3b0473 | 6037 | |
79a45b7d | 6038 | if (opts.addressprint) |
3b31d625 | 6039 | bkpttbl_chain |
3e43a32a MS |
6040 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6041 | nr_printable_breakpoints, | |
3b31d625 | 6042 | "BreakpointTable"); |
8b93c638 | 6043 | else |
3b31d625 | 6044 | bkpttbl_chain |
3e43a32a MS |
6045 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6046 | nr_printable_breakpoints, | |
3b31d625 | 6047 | "BreakpointTable"); |
8b93c638 | 6048 | |
7f3b0473 | 6049 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6050 | annotate_breakpoints_headers (); |
6051 | if (nr_printable_breakpoints > 0) | |
6052 | annotate_field (0); | |
4a64f543 | 6053 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6054 | if (nr_printable_breakpoints > 0) |
6055 | annotate_field (1); | |
269b11a2 | 6056 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6057 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6058 | if (nr_printable_breakpoints > 0) |
6059 | annotate_field (2); | |
4a64f543 | 6060 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6061 | if (nr_printable_breakpoints > 0) |
6062 | annotate_field (3); | |
54e52265 | 6063 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6064 | if (opts.addressprint) |
e5a67952 MS |
6065 | { |
6066 | if (nr_printable_breakpoints > 0) | |
6067 | annotate_field (4); | |
6068 | if (print_address_bits <= 32) | |
6069 | ui_out_table_header (uiout, 10, ui_left, | |
6070 | "addr", "Address"); /* 5 */ | |
6071 | else | |
6072 | ui_out_table_header (uiout, 18, ui_left, | |
6073 | "addr", "Address"); /* 5 */ | |
6074 | } | |
d7faa9e7 AC |
6075 | if (nr_printable_breakpoints > 0) |
6076 | annotate_field (5); | |
6077 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6078 | ui_out_table_body (uiout); | |
6079 | if (nr_printable_breakpoints > 0) | |
6080 | annotate_breakpoints_table (); | |
7f3b0473 | 6081 | |
c4093a6a | 6082 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6083 | { |
6084 | QUIT; | |
6085 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6086 | if (filter && !filter (b)) | |
6087 | continue; | |
6088 | ||
6089 | /* If we have an "args" string, it is a list of breakpoints to | |
6090 | accept. Skip the others. */ | |
6091 | ||
6092 | if (args != NULL && *args != '\0') | |
6093 | { | |
6094 | if (allflag) /* maintenance info breakpoint */ | |
6095 | { | |
6096 | if (parse_and_eval_long (args) != b->number) | |
6097 | continue; | |
6098 | } | |
6099 | else /* all others */ | |
6100 | { | |
6101 | if (!number_is_in_list (args, b->number)) | |
6102 | continue; | |
6103 | } | |
6104 | } | |
6105 | /* We only print out user settable breakpoints unless the | |
6106 | allflag is set. */ | |
6107 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6108 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6109 | } |
6110 | ||
3b31d625 | 6111 | do_cleanups (bkpttbl_chain); |
698384cd | 6112 | |
7f3b0473 | 6113 | if (nr_printable_breakpoints == 0) |
c906108c | 6114 | { |
4a64f543 MS |
6115 | /* If there's a filter, let the caller decide how to report |
6116 | empty list. */ | |
d77f58be SS |
6117 | if (!filter) |
6118 | { | |
e5a67952 | 6119 | if (args == NULL || *args == '\0') |
d77f58be SS |
6120 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6121 | else | |
4a64f543 | 6122 | ui_out_message (uiout, 0, |
e5a67952 MS |
6123 | "No breakpoint or watchpoint matching '%s'.\n", |
6124 | args); | |
d77f58be | 6125 | } |
c906108c SS |
6126 | } |
6127 | else | |
c4093a6a | 6128 | { |
a6d9a66e UW |
6129 | if (last_loc && !server_command) |
6130 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6131 | } |
c906108c | 6132 | |
4a64f543 | 6133 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6134 | there have been breakpoints? */ |
c906108c | 6135 | annotate_breakpoints_table_end (); |
d77f58be SS |
6136 | |
6137 | return nr_printable_breakpoints; | |
c906108c SS |
6138 | } |
6139 | ||
ad443146 SS |
6140 | /* Display the value of default-collect in a way that is generally |
6141 | compatible with the breakpoint list. */ | |
6142 | ||
6143 | static void | |
6144 | default_collect_info (void) | |
6145 | { | |
79a45e25 PA |
6146 | struct ui_out *uiout = current_uiout; |
6147 | ||
ad443146 SS |
6148 | /* If it has no value (which is frequently the case), say nothing; a |
6149 | message like "No default-collect." gets in user's face when it's | |
6150 | not wanted. */ | |
6151 | if (!*default_collect) | |
6152 | return; | |
6153 | ||
6154 | /* The following phrase lines up nicely with per-tracepoint collect | |
6155 | actions. */ | |
6156 | ui_out_text (uiout, "default collect "); | |
6157 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6158 | ui_out_text (uiout, " \n"); | |
6159 | } | |
6160 | ||
c906108c | 6161 | static void |
e5a67952 | 6162 | breakpoints_info (char *args, int from_tty) |
c906108c | 6163 | { |
e5a67952 | 6164 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6165 | |
6166 | default_collect_info (); | |
d77f58be SS |
6167 | } |
6168 | ||
6169 | static void | |
e5a67952 | 6170 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6171 | { |
e5a67952 | 6172 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6173 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6174 | |
6175 | if (num_printed == 0) | |
6176 | { | |
e5a67952 | 6177 | if (args == NULL || *args == '\0') |
d77f58be SS |
6178 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6179 | else | |
e5a67952 | 6180 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6181 | } |
c906108c SS |
6182 | } |
6183 | ||
7a292a7a | 6184 | static void |
e5a67952 | 6185 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6186 | { |
e5a67952 | 6187 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6188 | |
6189 | default_collect_info (); | |
c906108c SS |
6190 | } |
6191 | ||
0d381245 | 6192 | static int |
714835d5 | 6193 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6194 | struct program_space *pspace, |
714835d5 | 6195 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6196 | { |
6197 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6198 | |
0d381245 VP |
6199 | for (; bl; bl = bl->next) |
6200 | { | |
6c95b8df PA |
6201 | if (bl->pspace == pspace |
6202 | && bl->address == pc | |
0d381245 VP |
6203 | && (!overlay_debugging || bl->section == section)) |
6204 | return 1; | |
6205 | } | |
6206 | return 0; | |
6207 | } | |
6208 | ||
672f9b60 | 6209 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6210 | concerns with logical breakpoints, so we match program spaces, not |
6211 | address spaces. */ | |
c906108c SS |
6212 | |
6213 | static void | |
6c95b8df PA |
6214 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6215 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6216 | struct obj_section *section, int thread) |
c906108c | 6217 | { |
52f0bd74 AC |
6218 | int others = 0; |
6219 | struct breakpoint *b; | |
c906108c SS |
6220 | |
6221 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6222 | others += (user_breakpoint_p (b) |
6223 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6224 | if (others > 0) |
6225 | { | |
a3f17187 AC |
6226 | if (others == 1) |
6227 | printf_filtered (_("Note: breakpoint ")); | |
6228 | else /* if (others == ???) */ | |
6229 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6230 | ALL_BREAKPOINTS (b) |
672f9b60 | 6231 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6232 | { |
6233 | others--; | |
6234 | printf_filtered ("%d", b->number); | |
6235 | if (b->thread == -1 && thread != -1) | |
6236 | printf_filtered (" (all threads)"); | |
6237 | else if (b->thread != -1) | |
6238 | printf_filtered (" (thread %d)", b->thread); | |
6239 | printf_filtered ("%s%s ", | |
059fb39f | 6240 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6241 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6242 | ? " (disabled)" |
6243 | : b->enable_state == bp_permanent | |
6244 | ? " (permanent)" | |
6245 | : ""), | |
6246 | (others > 1) ? "," | |
6247 | : ((others == 1) ? " and" : "")); | |
6248 | } | |
a3f17187 | 6249 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6250 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6251 | printf_filtered (".\n"); |
6252 | } | |
6253 | } | |
6254 | \f | |
c906108c | 6255 | |
e4f237da KB |
6256 | /* Return true iff it is meaningful to use the address member of |
6257 | BPT. For some breakpoint types, the address member is irrelevant | |
6258 | and it makes no sense to attempt to compare it to other addresses | |
6259 | (or use it for any other purpose either). | |
6260 | ||
4a64f543 MS |
6261 | More specifically, each of the following breakpoint types will |
6262 | always have a zero valued address and we don't want to mark | |
6263 | breakpoints of any of these types to be a duplicate of an actual | |
6264 | breakpoint at address zero: | |
e4f237da KB |
6265 | |
6266 | bp_watchpoint | |
2d134ed3 PA |
6267 | bp_catchpoint |
6268 | ||
6269 | */ | |
e4f237da KB |
6270 | |
6271 | static int | |
6272 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6273 | { | |
6274 | enum bptype type = bpt->type; | |
6275 | ||
2d134ed3 PA |
6276 | return (type != bp_watchpoint && type != bp_catchpoint); |
6277 | } | |
6278 | ||
6279 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6280 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6281 | ||
6282 | static int | |
4a64f543 MS |
6283 | watchpoint_locations_match (struct bp_location *loc1, |
6284 | struct bp_location *loc2) | |
2d134ed3 | 6285 | { |
3a5c3e22 PA |
6286 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6287 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6288 | ||
6289 | /* Both of them must exist. */ | |
6290 | gdb_assert (w1 != NULL); | |
6291 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6292 | |
4a64f543 MS |
6293 | /* If the target can evaluate the condition expression in hardware, |
6294 | then we we need to insert both watchpoints even if they are at | |
6295 | the same place. Otherwise the watchpoint will only trigger when | |
6296 | the condition of whichever watchpoint was inserted evaluates to | |
6297 | true, not giving a chance for GDB to check the condition of the | |
6298 | other watchpoint. */ | |
3a5c3e22 | 6299 | if ((w1->cond_exp |
4a64f543 MS |
6300 | && target_can_accel_watchpoint_condition (loc1->address, |
6301 | loc1->length, | |
0cf6dd15 | 6302 | loc1->watchpoint_type, |
3a5c3e22 PA |
6303 | w1->cond_exp)) |
6304 | || (w2->cond_exp | |
4a64f543 MS |
6305 | && target_can_accel_watchpoint_condition (loc2->address, |
6306 | loc2->length, | |
0cf6dd15 | 6307 | loc2->watchpoint_type, |
3a5c3e22 | 6308 | w2->cond_exp))) |
0cf6dd15 TJB |
6309 | return 0; |
6310 | ||
85d721b8 PA |
6311 | /* Note that this checks the owner's type, not the location's. In |
6312 | case the target does not support read watchpoints, but does | |
6313 | support access watchpoints, we'll have bp_read_watchpoint | |
6314 | watchpoints with hw_access locations. Those should be considered | |
6315 | duplicates of hw_read locations. The hw_read locations will | |
6316 | become hw_access locations later. */ | |
2d134ed3 PA |
6317 | return (loc1->owner->type == loc2->owner->type |
6318 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6319 | && loc1->address == loc2->address | |
6320 | && loc1->length == loc2->length); | |
e4f237da KB |
6321 | } |
6322 | ||
6c95b8df PA |
6323 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
6324 | same breakpoint location. In most targets, this can only be true | |
6325 | if ASPACE1 matches ASPACE2. On targets that have global | |
6326 | breakpoints, the address space doesn't really matter. */ | |
6327 | ||
6328 | static int | |
6329 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
6330 | struct address_space *aspace2, CORE_ADDR addr2) | |
6331 | { | |
6332 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
6333 | || aspace1 == aspace2) | |
6334 | && addr1 == addr2); | |
6335 | } | |
6336 | ||
f1310107 TJB |
6337 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6338 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6339 | matches ASPACE2. On targets that have global breakpoints, the address | |
6340 | space doesn't really matter. */ | |
6341 | ||
6342 | static int | |
6343 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6344 | int len1, struct address_space *aspace2, | |
6345 | CORE_ADDR addr2) | |
6346 | { | |
6347 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
6348 | || aspace1 == aspace2) | |
6349 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6350 | } | |
6351 | ||
6352 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6353 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6354 | matches the breakpoint's address space. On targets that have global | |
6355 | breakpoints, the address space doesn't really matter. */ | |
6356 | ||
6357 | static int | |
6358 | breakpoint_location_address_match (struct bp_location *bl, | |
6359 | struct address_space *aspace, | |
6360 | CORE_ADDR addr) | |
6361 | { | |
6362 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6363 | aspace, addr) | |
6364 | || (bl->length | |
6365 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6366 | bl->address, bl->length, | |
6367 | aspace, addr))); | |
6368 | } | |
6369 | ||
1e4d1764 YQ |
6370 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6371 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6372 | true, otherwise returns false. */ | |
6373 | ||
6374 | static int | |
6375 | tracepoint_locations_match (struct bp_location *loc1, | |
6376 | struct bp_location *loc2) | |
6377 | { | |
6378 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6379 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6380 | locations at the same address of different tracepoints are regarded as | |
6381 | different locations. */ | |
6382 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6383 | else | |
6384 | return 0; | |
6385 | } | |
6386 | ||
2d134ed3 PA |
6387 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6388 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6389 | represent the same location. */ | |
6390 | ||
6391 | static int | |
4a64f543 MS |
6392 | breakpoint_locations_match (struct bp_location *loc1, |
6393 | struct bp_location *loc2) | |
2d134ed3 | 6394 | { |
2bdf28a0 JK |
6395 | int hw_point1, hw_point2; |
6396 | ||
6397 | /* Both of them must not be in moribund_locations. */ | |
6398 | gdb_assert (loc1->owner != NULL); | |
6399 | gdb_assert (loc2->owner != NULL); | |
6400 | ||
6401 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6402 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6403 | |
6404 | if (hw_point1 != hw_point2) | |
6405 | return 0; | |
6406 | else if (hw_point1) | |
6407 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6408 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6409 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6410 | else |
f1310107 TJB |
6411 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6412 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6413 | loc2->pspace->aspace, loc2->address) | |
6414 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6415 | } |
6416 | ||
76897487 KB |
6417 | static void |
6418 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6419 | int bnum, int have_bnum) | |
6420 | { | |
f63fbe86 MS |
6421 | /* The longest string possibly returned by hex_string_custom |
6422 | is 50 chars. These must be at least that big for safety. */ | |
6423 | char astr1[64]; | |
6424 | char astr2[64]; | |
76897487 | 6425 | |
bb599908 PH |
6426 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6427 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6428 | if (have_bnum) |
8a3fe4f8 | 6429 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6430 | bnum, astr1, astr2); |
6431 | else | |
8a3fe4f8 | 6432 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6433 | } |
6434 | ||
4a64f543 MS |
6435 | /* Adjust a breakpoint's address to account for architectural |
6436 | constraints on breakpoint placement. Return the adjusted address. | |
6437 | Note: Very few targets require this kind of adjustment. For most | |
6438 | targets, this function is simply the identity function. */ | |
76897487 KB |
6439 | |
6440 | static CORE_ADDR | |
a6d9a66e UW |
6441 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6442 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6443 | { |
a6d9a66e | 6444 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6445 | { |
6446 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6447 | return bpaddr; | |
6448 | } | |
88f7da05 KB |
6449 | else if (bptype == bp_watchpoint |
6450 | || bptype == bp_hardware_watchpoint | |
6451 | || bptype == bp_read_watchpoint | |
6452 | || bptype == bp_access_watchpoint | |
fe798b75 | 6453 | || bptype == bp_catchpoint) |
88f7da05 KB |
6454 | { |
6455 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6456 | have their addresses modified. */ | |
6457 | return bpaddr; | |
6458 | } | |
76897487 KB |
6459 | else |
6460 | { | |
6461 | CORE_ADDR adjusted_bpaddr; | |
6462 | ||
6463 | /* Some targets have architectural constraints on the placement | |
6464 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 6465 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
6466 | |
6467 | /* An adjusted breakpoint address can significantly alter | |
6468 | a user's expectations. Print a warning if an adjustment | |
6469 | is required. */ | |
6470 | if (adjusted_bpaddr != bpaddr) | |
6471 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6472 | ||
6473 | return adjusted_bpaddr; | |
6474 | } | |
6475 | } | |
6476 | ||
28010a5d PA |
6477 | void |
6478 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
6479 | struct breakpoint *owner) | |
7cc221ef | 6480 | { |
7cc221ef DJ |
6481 | memset (loc, 0, sizeof (*loc)); |
6482 | ||
348d480f PA |
6483 | gdb_assert (ops != NULL); |
6484 | ||
28010a5d PA |
6485 | loc->ops = ops; |
6486 | loc->owner = owner; | |
511a6cd4 | 6487 | loc->cond = NULL; |
b775012e | 6488 | loc->cond_bytecode = NULL; |
0d381245 VP |
6489 | loc->shlib_disabled = 0; |
6490 | loc->enabled = 1; | |
e049a4b5 | 6491 | |
28010a5d | 6492 | switch (owner->type) |
e049a4b5 DJ |
6493 | { |
6494 | case bp_breakpoint: | |
6495 | case bp_until: | |
6496 | case bp_finish: | |
6497 | case bp_longjmp: | |
6498 | case bp_longjmp_resume: | |
e2e4d78b | 6499 | case bp_longjmp_call_dummy: |
186c406b TT |
6500 | case bp_exception: |
6501 | case bp_exception_resume: | |
e049a4b5 | 6502 | case bp_step_resume: |
2c03e5be | 6503 | case bp_hp_step_resume: |
e049a4b5 DJ |
6504 | case bp_watchpoint_scope: |
6505 | case bp_call_dummy: | |
aa7d318d | 6506 | case bp_std_terminate: |
e049a4b5 DJ |
6507 | case bp_shlib_event: |
6508 | case bp_thread_event: | |
6509 | case bp_overlay_event: | |
4efc6507 | 6510 | case bp_jit_event: |
0fd8e87f | 6511 | case bp_longjmp_master: |
aa7d318d | 6512 | case bp_std_terminate_master: |
186c406b | 6513 | case bp_exception_master: |
0e30163f JK |
6514 | case bp_gnu_ifunc_resolver: |
6515 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6516 | case bp_dprintf: |
e049a4b5 | 6517 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6518 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6519 | break; |
6520 | case bp_hardware_breakpoint: | |
6521 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6522 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6523 | break; |
6524 | case bp_hardware_watchpoint: | |
6525 | case bp_read_watchpoint: | |
6526 | case bp_access_watchpoint: | |
6527 | loc->loc_type = bp_loc_hardware_watchpoint; | |
6528 | break; | |
6529 | case bp_watchpoint: | |
ce78b96d | 6530 | case bp_catchpoint: |
15c3d785 PA |
6531 | case bp_tracepoint: |
6532 | case bp_fast_tracepoint: | |
0fb4aa4b | 6533 | case bp_static_tracepoint: |
e049a4b5 DJ |
6534 | loc->loc_type = bp_loc_other; |
6535 | break; | |
6536 | default: | |
e2e0b3e5 | 6537 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
6538 | } |
6539 | ||
f431efe5 | 6540 | loc->refc = 1; |
28010a5d PA |
6541 | } |
6542 | ||
6543 | /* Allocate a struct bp_location. */ | |
6544 | ||
6545 | static struct bp_location * | |
6546 | allocate_bp_location (struct breakpoint *bpt) | |
6547 | { | |
348d480f PA |
6548 | return bpt->ops->allocate_location (bpt); |
6549 | } | |
7cc221ef | 6550 | |
f431efe5 PA |
6551 | static void |
6552 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6553 | { |
348d480f | 6554 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
6555 | xfree (loc); |
6556 | } | |
6557 | ||
f431efe5 PA |
6558 | /* Increment reference count. */ |
6559 | ||
6560 | static void | |
6561 | incref_bp_location (struct bp_location *bl) | |
6562 | { | |
6563 | ++bl->refc; | |
6564 | } | |
6565 | ||
6566 | /* Decrement reference count. If the reference count reaches 0, | |
6567 | destroy the bp_location. Sets *BLP to NULL. */ | |
6568 | ||
6569 | static void | |
6570 | decref_bp_location (struct bp_location **blp) | |
6571 | { | |
0807b50c PA |
6572 | gdb_assert ((*blp)->refc > 0); |
6573 | ||
f431efe5 PA |
6574 | if (--(*blp)->refc == 0) |
6575 | free_bp_location (*blp); | |
6576 | *blp = NULL; | |
6577 | } | |
6578 | ||
346774a9 | 6579 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 6580 | |
346774a9 PA |
6581 | static void |
6582 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 6583 | { |
346774a9 | 6584 | struct breakpoint *b1; |
c906108c | 6585 | |
346774a9 PA |
6586 | /* Add this breakpoint to the end of the chain so that a list of |
6587 | breakpoints will come out in order of increasing numbers. */ | |
6588 | ||
6589 | b1 = breakpoint_chain; | |
6590 | if (b1 == 0) | |
6591 | breakpoint_chain = b; | |
6592 | else | |
6593 | { | |
6594 | while (b1->next) | |
6595 | b1 = b1->next; | |
6596 | b1->next = b; | |
6597 | } | |
6598 | } | |
6599 | ||
6600 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
6601 | ||
6602 | static void | |
6603 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
6604 | struct gdbarch *gdbarch, | |
28010a5d | 6605 | enum bptype bptype, |
c0a91b2b | 6606 | const struct breakpoint_ops *ops) |
346774a9 | 6607 | { |
c906108c | 6608 | memset (b, 0, sizeof (*b)); |
2219d63c | 6609 | |
348d480f PA |
6610 | gdb_assert (ops != NULL); |
6611 | ||
28010a5d | 6612 | b->ops = ops; |
4d28f7a8 | 6613 | b->type = bptype; |
a6d9a66e | 6614 | b->gdbarch = gdbarch; |
c906108c SS |
6615 | b->language = current_language->la_language; |
6616 | b->input_radix = input_radix; | |
6617 | b->thread = -1; | |
b5de0fa7 | 6618 | b->enable_state = bp_enabled; |
c906108c SS |
6619 | b->next = 0; |
6620 | b->silent = 0; | |
6621 | b->ignore_count = 0; | |
6622 | b->commands = NULL; | |
818dd999 | 6623 | b->frame_id = null_frame_id; |
0d381245 | 6624 | b->condition_not_parsed = 0; |
84f4c1fe | 6625 | b->py_bp_object = NULL; |
d0fb5eae | 6626 | b->related_breakpoint = b; |
346774a9 PA |
6627 | } |
6628 | ||
6629 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
6630 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
6631 | |
6632 | static struct breakpoint * | |
6633 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 6634 | enum bptype bptype, |
c0a91b2b | 6635 | const struct breakpoint_ops *ops) |
346774a9 PA |
6636 | { |
6637 | struct breakpoint *b = XNEW (struct breakpoint); | |
6638 | ||
348d480f | 6639 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 6640 | add_to_breakpoint_chain (b); |
0d381245 VP |
6641 | return b; |
6642 | } | |
6643 | ||
0e30163f JK |
6644 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
6645 | resolutions should be made as the user specified the location explicitly | |
6646 | enough. */ | |
6647 | ||
0d381245 | 6648 | static void |
0e30163f | 6649 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 6650 | { |
2bdf28a0 JK |
6651 | gdb_assert (loc->owner != NULL); |
6652 | ||
0d381245 | 6653 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 6654 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 6655 | || is_tracepoint (loc->owner)) |
0d381245 | 6656 | { |
0e30163f | 6657 | int is_gnu_ifunc; |
2c02bd72 | 6658 | const char *function_name; |
6a3a010b | 6659 | CORE_ADDR func_addr; |
0e30163f | 6660 | |
2c02bd72 | 6661 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 6662 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
6663 | |
6664 | if (is_gnu_ifunc && !explicit_loc) | |
6665 | { | |
6666 | struct breakpoint *b = loc->owner; | |
6667 | ||
6668 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 6669 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
6670 | &loc->requested_address)) |
6671 | { | |
6672 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
6673 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
6674 | loc->requested_address, | |
6675 | b->type); | |
6676 | } | |
6677 | else if (b->type == bp_breakpoint && b->loc == loc | |
6678 | && loc->next == NULL && b->related_breakpoint == b) | |
6679 | { | |
6680 | /* Create only the whole new breakpoint of this type but do not | |
6681 | mess more complicated breakpoints with multiple locations. */ | |
6682 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
6683 | /* Remember the resolver's address for use by the return |
6684 | breakpoint. */ | |
6685 | loc->related_address = func_addr; | |
0e30163f JK |
6686 | } |
6687 | } | |
6688 | ||
2c02bd72 DE |
6689 | if (function_name) |
6690 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
6691 | } |
6692 | } | |
6693 | ||
a6d9a66e | 6694 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 6695 | struct gdbarch * |
a6d9a66e UW |
6696 | get_sal_arch (struct symtab_and_line sal) |
6697 | { | |
6698 | if (sal.section) | |
6699 | return get_objfile_arch (sal.section->objfile); | |
6700 | if (sal.symtab) | |
6701 | return get_objfile_arch (sal.symtab->objfile); | |
6702 | ||
6703 | return NULL; | |
6704 | } | |
6705 | ||
346774a9 PA |
6706 | /* Low level routine for partially initializing a breakpoint of type |
6707 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 6708 | file name, and line number are provided by SAL. |
0d381245 VP |
6709 | |
6710 | It is expected that the caller will complete the initialization of | |
6711 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 6712 | information regarding the creation of a new breakpoint. */ |
0d381245 | 6713 | |
346774a9 PA |
6714 | static void |
6715 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 6716 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 6717 | const struct breakpoint_ops *ops) |
0d381245 | 6718 | { |
28010a5d | 6719 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 6720 | |
3742cc8b | 6721 | add_location_to_breakpoint (b, &sal); |
0d381245 | 6722 | |
6c95b8df PA |
6723 | if (bptype != bp_catchpoint) |
6724 | gdb_assert (sal.pspace != NULL); | |
6725 | ||
f8eba3c6 TT |
6726 | /* Store the program space that was used to set the breakpoint, |
6727 | except for ordinary breakpoints, which are independent of the | |
6728 | program space. */ | |
6729 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
6730 | b->pspace = sal.pspace; | |
0d381245 | 6731 | |
c906108c | 6732 | breakpoints_changed (); |
346774a9 | 6733 | } |
c906108c | 6734 | |
346774a9 PA |
6735 | /* set_raw_breakpoint is a low level routine for allocating and |
6736 | partially initializing a breakpoint of type BPTYPE. The newly | |
6737 | created breakpoint's address, section, source file name, and line | |
6738 | number are provided by SAL. The newly created and partially | |
6739 | initialized breakpoint is added to the breakpoint chain and | |
6740 | is also returned as the value of this function. | |
6741 | ||
6742 | It is expected that the caller will complete the initialization of | |
6743 | the newly created breakpoint struct as well as output any status | |
6744 | information regarding the creation of a new breakpoint. In | |
6745 | particular, set_raw_breakpoint does NOT set the breakpoint | |
6746 | number! Care should be taken to not allow an error to occur | |
6747 | prior to completing the initialization of the breakpoint. If this | |
6748 | should happen, a bogus breakpoint will be left on the chain. */ | |
6749 | ||
6750 | struct breakpoint * | |
6751 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 6752 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 6753 | const struct breakpoint_ops *ops) |
346774a9 PA |
6754 | { |
6755 | struct breakpoint *b = XNEW (struct breakpoint); | |
6756 | ||
348d480f | 6757 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 6758 | add_to_breakpoint_chain (b); |
c906108c SS |
6759 | return b; |
6760 | } | |
6761 | ||
c2c6d25f JM |
6762 | |
6763 | /* Note that the breakpoint object B describes a permanent breakpoint | |
6764 | instruction, hard-wired into the inferior's code. */ | |
6765 | void | |
6766 | make_breakpoint_permanent (struct breakpoint *b) | |
6767 | { | |
0d381245 | 6768 | struct bp_location *bl; |
cc59ec59 | 6769 | |
b5de0fa7 | 6770 | b->enable_state = bp_permanent; |
c2c6d25f | 6771 | |
4a64f543 MS |
6772 | /* By definition, permanent breakpoints are already present in the |
6773 | code. Mark all locations as inserted. For now, | |
6774 | make_breakpoint_permanent is called in just one place, so it's | |
6775 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 6776 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
6777 | for (bl = b->loc; bl; bl = bl->next) |
6778 | bl->inserted = 1; | |
c2c6d25f JM |
6779 | } |
6780 | ||
53a5351d | 6781 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
6782 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
6783 | initiated the operation. */ | |
c906108c SS |
6784 | |
6785 | void | |
186c406b | 6786 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 6787 | { |
35df4500 | 6788 | struct breakpoint *b, *b_tmp; |
186c406b | 6789 | int thread = tp->num; |
0fd8e87f UW |
6790 | |
6791 | /* To avoid having to rescan all objfile symbols at every step, | |
6792 | we maintain a list of continually-inserted but always disabled | |
6793 | longjmp "master" breakpoints. Here, we simply create momentary | |
6794 | clones of those and enable them for the requested thread. */ | |
35df4500 | 6795 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 6796 | if (b->pspace == current_program_space |
186c406b TT |
6797 | && (b->type == bp_longjmp_master |
6798 | || b->type == bp_exception_master)) | |
0fd8e87f | 6799 | { |
06edf0c0 PA |
6800 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
6801 | struct breakpoint *clone; | |
cc59ec59 | 6802 | |
e2e4d78b JK |
6803 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
6804 | after their removal. */ | |
06edf0c0 | 6805 | clone = momentary_breakpoint_from_master (b, type, |
e2e4d78b | 6806 | &longjmp_breakpoint_ops); |
0fd8e87f UW |
6807 | clone->thread = thread; |
6808 | } | |
186c406b TT |
6809 | |
6810 | tp->initiating_frame = frame; | |
c906108c SS |
6811 | } |
6812 | ||
611c83ae | 6813 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 6814 | void |
611c83ae | 6815 | delete_longjmp_breakpoint (int thread) |
c906108c | 6816 | { |
35df4500 | 6817 | struct breakpoint *b, *b_tmp; |
c906108c | 6818 | |
35df4500 | 6819 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 6820 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
6821 | { |
6822 | if (b->thread == thread) | |
6823 | delete_breakpoint (b); | |
6824 | } | |
c906108c SS |
6825 | } |
6826 | ||
f59f708a PA |
6827 | void |
6828 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
6829 | { | |
6830 | struct breakpoint *b, *b_tmp; | |
6831 | ||
6832 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6833 | if (b->type == bp_longjmp || b->type == bp_exception) | |
6834 | { | |
6835 | if (b->thread == thread) | |
6836 | b->disposition = disp_del_at_next_stop; | |
6837 | } | |
6838 | } | |
6839 | ||
e2e4d78b JK |
6840 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
6841 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
6842 | pointer to any of them. Return NULL if this system cannot place longjmp | |
6843 | breakpoints. */ | |
6844 | ||
6845 | struct breakpoint * | |
6846 | set_longjmp_breakpoint_for_call_dummy (void) | |
6847 | { | |
6848 | struct breakpoint *b, *retval = NULL; | |
6849 | ||
6850 | ALL_BREAKPOINTS (b) | |
6851 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
6852 | { | |
6853 | struct breakpoint *new_b; | |
6854 | ||
6855 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
6856 | &momentary_breakpoint_ops); | |
6857 | new_b->thread = pid_to_thread_id (inferior_ptid); | |
6858 | ||
6859 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
6860 | ||
6861 | gdb_assert (new_b->related_breakpoint == new_b); | |
6862 | if (retval == NULL) | |
6863 | retval = new_b; | |
6864 | new_b->related_breakpoint = retval; | |
6865 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
6866 | retval = retval->related_breakpoint; | |
6867 | retval->related_breakpoint = new_b; | |
6868 | } | |
6869 | ||
6870 | return retval; | |
6871 | } | |
6872 | ||
6873 | /* Verify all existing dummy frames and their associated breakpoints for | |
6874 | THREAD. Remove those which can no longer be found in the current frame | |
6875 | stack. | |
6876 | ||
6877 | You should call this function only at places where it is safe to currently | |
6878 | unwind the whole stack. Failed stack unwind would discard live dummy | |
6879 | frames. */ | |
6880 | ||
6881 | void | |
6882 | check_longjmp_breakpoint_for_call_dummy (int thread) | |
6883 | { | |
6884 | struct breakpoint *b, *b_tmp; | |
6885 | ||
6886 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6887 | if (b->type == bp_longjmp_call_dummy && b->thread == thread) | |
6888 | { | |
6889 | struct breakpoint *dummy_b = b->related_breakpoint; | |
6890 | ||
6891 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
6892 | dummy_b = dummy_b->related_breakpoint; | |
6893 | if (dummy_b->type != bp_call_dummy | |
6894 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
6895 | continue; | |
6896 | ||
6897 | dummy_frame_discard (dummy_b->frame_id); | |
6898 | ||
6899 | while (b->related_breakpoint != b) | |
6900 | { | |
6901 | if (b_tmp == b->related_breakpoint) | |
6902 | b_tmp = b->related_breakpoint->next; | |
6903 | delete_breakpoint (b->related_breakpoint); | |
6904 | } | |
6905 | delete_breakpoint (b); | |
6906 | } | |
6907 | } | |
6908 | ||
1900040c MS |
6909 | void |
6910 | enable_overlay_breakpoints (void) | |
6911 | { | |
52f0bd74 | 6912 | struct breakpoint *b; |
1900040c MS |
6913 | |
6914 | ALL_BREAKPOINTS (b) | |
6915 | if (b->type == bp_overlay_event) | |
6916 | { | |
6917 | b->enable_state = bp_enabled; | |
b60e7edf | 6918 | update_global_location_list (1); |
c02f5703 | 6919 | overlay_events_enabled = 1; |
1900040c MS |
6920 | } |
6921 | } | |
6922 | ||
6923 | void | |
6924 | disable_overlay_breakpoints (void) | |
6925 | { | |
52f0bd74 | 6926 | struct breakpoint *b; |
1900040c MS |
6927 | |
6928 | ALL_BREAKPOINTS (b) | |
6929 | if (b->type == bp_overlay_event) | |
6930 | { | |
6931 | b->enable_state = bp_disabled; | |
b60e7edf | 6932 | update_global_location_list (0); |
c02f5703 | 6933 | overlay_events_enabled = 0; |
1900040c MS |
6934 | } |
6935 | } | |
6936 | ||
aa7d318d TT |
6937 | /* Set an active std::terminate breakpoint for each std::terminate |
6938 | master breakpoint. */ | |
6939 | void | |
6940 | set_std_terminate_breakpoint (void) | |
6941 | { | |
35df4500 | 6942 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6943 | |
35df4500 | 6944 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6945 | if (b->pspace == current_program_space |
6946 | && b->type == bp_std_terminate_master) | |
6947 | { | |
06edf0c0 PA |
6948 | momentary_breakpoint_from_master (b, bp_std_terminate, |
6949 | &momentary_breakpoint_ops); | |
aa7d318d TT |
6950 | } |
6951 | } | |
6952 | ||
6953 | /* Delete all the std::terminate breakpoints. */ | |
6954 | void | |
6955 | delete_std_terminate_breakpoint (void) | |
6956 | { | |
35df4500 | 6957 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6958 | |
35df4500 | 6959 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6960 | if (b->type == bp_std_terminate) |
6961 | delete_breakpoint (b); | |
6962 | } | |
6963 | ||
c4093a6a | 6964 | struct breakpoint * |
a6d9a66e | 6965 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
6966 | { |
6967 | struct breakpoint *b; | |
c4093a6a | 6968 | |
06edf0c0 PA |
6969 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
6970 | &internal_breakpoint_ops); | |
6971 | ||
b5de0fa7 | 6972 | b->enable_state = bp_enabled; |
c4093a6a | 6973 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
6974 | b->addr_string |
6975 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 6976 | |
b60e7edf | 6977 | update_global_location_list_nothrow (1); |
74960c60 | 6978 | |
c4093a6a JM |
6979 | return b; |
6980 | } | |
6981 | ||
6982 | void | |
6983 | remove_thread_event_breakpoints (void) | |
6984 | { | |
35df4500 | 6985 | struct breakpoint *b, *b_tmp; |
c4093a6a | 6986 | |
35df4500 | 6987 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6988 | if (b->type == bp_thread_event |
6989 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
6990 | delete_breakpoint (b); |
6991 | } | |
6992 | ||
0101ce28 JJ |
6993 | struct lang_and_radix |
6994 | { | |
6995 | enum language lang; | |
6996 | int radix; | |
6997 | }; | |
6998 | ||
4efc6507 DE |
6999 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7000 | ||
7001 | struct breakpoint * | |
7002 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7003 | { | |
7004 | struct breakpoint *b; | |
7005 | ||
06edf0c0 PA |
7006 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7007 | &internal_breakpoint_ops); | |
4efc6507 DE |
7008 | update_global_location_list_nothrow (1); |
7009 | return b; | |
7010 | } | |
0101ce28 | 7011 | |
03673fc7 PP |
7012 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7013 | ||
7014 | void | |
7015 | remove_jit_event_breakpoints (void) | |
7016 | { | |
7017 | struct breakpoint *b, *b_tmp; | |
7018 | ||
7019 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7020 | if (b->type == bp_jit_event | |
7021 | && b->loc->pspace == current_program_space) | |
7022 | delete_breakpoint (b); | |
7023 | } | |
7024 | ||
cae688ec JJ |
7025 | void |
7026 | remove_solib_event_breakpoints (void) | |
7027 | { | |
35df4500 | 7028 | struct breakpoint *b, *b_tmp; |
cae688ec | 7029 | |
35df4500 | 7030 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7031 | if (b->type == bp_shlib_event |
7032 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7033 | delete_breakpoint (b); |
7034 | } | |
7035 | ||
7036 | struct breakpoint * | |
a6d9a66e | 7037 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
7038 | { |
7039 | struct breakpoint *b; | |
7040 | ||
06edf0c0 PA |
7041 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7042 | &internal_breakpoint_ops); | |
b60e7edf | 7043 | update_global_location_list_nothrow (1); |
cae688ec JJ |
7044 | return b; |
7045 | } | |
7046 | ||
7047 | /* Disable any breakpoints that are on code in shared libraries. Only | |
7048 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7049 | ||
7050 | void | |
cb851954 | 7051 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7052 | { |
876fa593 | 7053 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7054 | |
876fa593 | 7055 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7056 | { |
2bdf28a0 | 7057 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7058 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7059 | |
4a64f543 MS |
7060 | /* We apply the check to all breakpoints, including disabled for |
7061 | those with loc->duplicate set. This is so that when breakpoint | |
7062 | becomes enabled, or the duplicate is removed, gdb will try to | |
7063 | insert all breakpoints. If we don't set shlib_disabled here, | |
7064 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7065 | if (((b->type == bp_breakpoint) |
508ccb1f | 7066 | || (b->type == bp_jit_event) |
1042e4c0 | 7067 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7068 | || (is_tracepoint (b))) |
6c95b8df | 7069 | && loc->pspace == current_program_space |
0d381245 | 7070 | && !loc->shlib_disabled |
a77053c2 | 7071 | #ifdef PC_SOLIB |
0d381245 | 7072 | && PC_SOLIB (loc->address) |
a77053c2 | 7073 | #else |
6c95b8df | 7074 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
7075 | #endif |
7076 | ) | |
0d381245 VP |
7077 | { |
7078 | loc->shlib_disabled = 1; | |
7079 | } | |
cae688ec JJ |
7080 | } |
7081 | } | |
7082 | ||
1e4d1764 YQ |
7083 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
7084 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 7085 | disabled. */ |
84acb35a | 7086 | |
75149521 | 7087 | static void |
84acb35a JJ |
7088 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7089 | { | |
876fa593 | 7090 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7091 | int disabled_shlib_breaks = 0; |
7092 | ||
c86cf029 VP |
7093 | /* SunOS a.out shared libraries are always mapped, so do not |
7094 | disable breakpoints; they will only be reported as unloaded | |
7095 | through clear_solib when GDB discards its shared library | |
7096 | list. See clear_solib for more information. */ | |
7097 | if (exec_bfd != NULL | |
7098 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7099 | return; | |
7100 | ||
876fa593 | 7101 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7102 | { |
2bdf28a0 | 7103 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7104 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7105 | |
1e4d1764 | 7106 | if (solib->pspace == loc->pspace |
e2dd7057 | 7107 | && !loc->shlib_disabled |
1e4d1764 YQ |
7108 | && (((b->type == bp_breakpoint |
7109 | || b->type == bp_jit_event | |
7110 | || b->type == bp_hardware_breakpoint) | |
7111 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7112 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7113 | || is_tracepoint (b)) | |
e2dd7057 | 7114 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7115 | { |
e2dd7057 PP |
7116 | loc->shlib_disabled = 1; |
7117 | /* At this point, we cannot rely on remove_breakpoint | |
7118 | succeeding so we must mark the breakpoint as not inserted | |
7119 | to prevent future errors occurring in remove_breakpoints. */ | |
7120 | loc->inserted = 0; | |
8d3788bd VP |
7121 | |
7122 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7123 | observer_notify_breakpoint_modified (b); | |
7124 | ||
e2dd7057 PP |
7125 | if (!disabled_shlib_breaks) |
7126 | { | |
7127 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7128 | warning (_("Temporarily disabling breakpoints " |
7129 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7130 | solib->so_name); |
84acb35a | 7131 | } |
e2dd7057 | 7132 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7133 | } |
7134 | } | |
84acb35a JJ |
7135 | } |
7136 | ||
ce78b96d JB |
7137 | /* FORK & VFORK catchpoints. */ |
7138 | ||
e29a4733 PA |
7139 | /* An instance of this type is used to represent a fork or vfork |
7140 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7141 | class; users downcast to "struct breakpoint *" when needed. A | |
7142 | breakpoint is really of this type iff its ops pointer points to | |
7143 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7144 | ||
7145 | struct fork_catchpoint | |
7146 | { | |
7147 | /* The base class. */ | |
7148 | struct breakpoint base; | |
7149 | ||
7150 | /* Process id of a child process whose forking triggered this | |
7151 | catchpoint. This field is only valid immediately after this | |
7152 | catchpoint has triggered. */ | |
7153 | ptid_t forked_inferior_pid; | |
7154 | }; | |
7155 | ||
4a64f543 MS |
7156 | /* Implement the "insert" breakpoint_ops method for fork |
7157 | catchpoints. */ | |
ce78b96d | 7158 | |
77b06cd7 TJB |
7159 | static int |
7160 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7161 | { |
77b06cd7 | 7162 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7163 | } |
7164 | ||
4a64f543 MS |
7165 | /* Implement the "remove" breakpoint_ops method for fork |
7166 | catchpoints. */ | |
ce78b96d JB |
7167 | |
7168 | static int | |
77b06cd7 | 7169 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
7170 | { |
7171 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
7172 | } | |
7173 | ||
7174 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7175 | catchpoints. */ | |
7176 | ||
7177 | static int | |
f1310107 | 7178 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7179 | struct address_space *aspace, CORE_ADDR bp_addr, |
7180 | const struct target_waitstatus *ws) | |
ce78b96d | 7181 | { |
e29a4733 PA |
7182 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7183 | ||
f90263c1 TT |
7184 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7185 | return 0; | |
7186 | ||
7187 | c->forked_inferior_pid = ws->value.related_pid; | |
7188 | return 1; | |
ce78b96d JB |
7189 | } |
7190 | ||
4a64f543 MS |
7191 | /* Implement the "print_it" breakpoint_ops method for fork |
7192 | catchpoints. */ | |
ce78b96d JB |
7193 | |
7194 | static enum print_stop_action | |
348d480f | 7195 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7196 | { |
36dfb11c | 7197 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7198 | struct breakpoint *b = bs->breakpoint_at; |
7199 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7200 | |
ce78b96d | 7201 | annotate_catchpoint (b->number); |
36dfb11c TT |
7202 | if (b->disposition == disp_del) |
7203 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7204 | else | |
7205 | ui_out_text (uiout, "\nCatchpoint "); | |
7206 | if (ui_out_is_mi_like_p (uiout)) | |
7207 | { | |
7208 | ui_out_field_string (uiout, "reason", | |
7209 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7210 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7211 | } | |
7212 | ui_out_field_int (uiout, "bkptno", b->number); | |
7213 | ui_out_text (uiout, " (forked process "); | |
7214 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7215 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7216 | return PRINT_SRC_AND_LOC; |
7217 | } | |
7218 | ||
4a64f543 MS |
7219 | /* Implement the "print_one" breakpoint_ops method for fork |
7220 | catchpoints. */ | |
ce78b96d JB |
7221 | |
7222 | static void | |
a6d9a66e | 7223 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7224 | { |
e29a4733 | 7225 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7226 | struct value_print_options opts; |
79a45e25 | 7227 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7228 | |
7229 | get_user_print_options (&opts); | |
7230 | ||
4a64f543 MS |
7231 | /* Field 4, the address, is omitted (which makes the columns not |
7232 | line up too nicely with the headers, but the effect is relatively | |
7233 | readable). */ | |
79a45b7d | 7234 | if (opts.addressprint) |
ce78b96d JB |
7235 | ui_out_field_skip (uiout, "addr"); |
7236 | annotate_field (5); | |
7237 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7238 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7239 | { |
7240 | ui_out_text (uiout, ", process "); | |
7241 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7242 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7243 | ui_out_spaces (uiout, 1); |
7244 | } | |
7245 | } | |
7246 | ||
7247 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7248 | catchpoints. */ | |
7249 | ||
7250 | static void | |
7251 | print_mention_catch_fork (struct breakpoint *b) | |
7252 | { | |
7253 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7254 | } | |
7255 | ||
6149aea9 PA |
7256 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7257 | catchpoints. */ | |
7258 | ||
7259 | static void | |
7260 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7261 | { | |
7262 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7263 | print_recreate_thread (b, fp); |
6149aea9 PA |
7264 | } |
7265 | ||
ce78b96d JB |
7266 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7267 | ||
2060206e | 7268 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7269 | |
4a64f543 MS |
7270 | /* Implement the "insert" breakpoint_ops method for vfork |
7271 | catchpoints. */ | |
ce78b96d | 7272 | |
77b06cd7 TJB |
7273 | static int |
7274 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7275 | { |
77b06cd7 | 7276 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7277 | } |
7278 | ||
4a64f543 MS |
7279 | /* Implement the "remove" breakpoint_ops method for vfork |
7280 | catchpoints. */ | |
ce78b96d JB |
7281 | |
7282 | static int | |
77b06cd7 | 7283 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
7284 | { |
7285 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
7286 | } | |
7287 | ||
7288 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7289 | catchpoints. */ | |
7290 | ||
7291 | static int | |
f1310107 | 7292 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7293 | struct address_space *aspace, CORE_ADDR bp_addr, |
7294 | const struct target_waitstatus *ws) | |
ce78b96d | 7295 | { |
e29a4733 PA |
7296 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7297 | ||
f90263c1 TT |
7298 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7299 | return 0; | |
7300 | ||
7301 | c->forked_inferior_pid = ws->value.related_pid; | |
7302 | return 1; | |
ce78b96d JB |
7303 | } |
7304 | ||
4a64f543 MS |
7305 | /* Implement the "print_it" breakpoint_ops method for vfork |
7306 | catchpoints. */ | |
ce78b96d JB |
7307 | |
7308 | static enum print_stop_action | |
348d480f | 7309 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7310 | { |
36dfb11c | 7311 | struct ui_out *uiout = current_uiout; |
348d480f | 7312 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7313 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7314 | ||
ce78b96d | 7315 | annotate_catchpoint (b->number); |
36dfb11c TT |
7316 | if (b->disposition == disp_del) |
7317 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7318 | else | |
7319 | ui_out_text (uiout, "\nCatchpoint "); | |
7320 | if (ui_out_is_mi_like_p (uiout)) | |
7321 | { | |
7322 | ui_out_field_string (uiout, "reason", | |
7323 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
7324 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7325 | } | |
7326 | ui_out_field_int (uiout, "bkptno", b->number); | |
7327 | ui_out_text (uiout, " (vforked process "); | |
7328 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7329 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7330 | return PRINT_SRC_AND_LOC; |
7331 | } | |
7332 | ||
4a64f543 MS |
7333 | /* Implement the "print_one" breakpoint_ops method for vfork |
7334 | catchpoints. */ | |
ce78b96d JB |
7335 | |
7336 | static void | |
a6d9a66e | 7337 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7338 | { |
e29a4733 | 7339 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7340 | struct value_print_options opts; |
79a45e25 | 7341 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7342 | |
7343 | get_user_print_options (&opts); | |
4a64f543 MS |
7344 | /* Field 4, the address, is omitted (which makes the columns not |
7345 | line up too nicely with the headers, but the effect is relatively | |
7346 | readable). */ | |
79a45b7d | 7347 | if (opts.addressprint) |
ce78b96d JB |
7348 | ui_out_field_skip (uiout, "addr"); |
7349 | annotate_field (5); | |
7350 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 7351 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7352 | { |
7353 | ui_out_text (uiout, ", process "); | |
7354 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7355 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7356 | ui_out_spaces (uiout, 1); |
7357 | } | |
7358 | } | |
7359 | ||
7360 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7361 | catchpoints. */ | |
7362 | ||
7363 | static void | |
7364 | print_mention_catch_vfork (struct breakpoint *b) | |
7365 | { | |
7366 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7367 | } | |
7368 | ||
6149aea9 PA |
7369 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7370 | catchpoints. */ | |
7371 | ||
7372 | static void | |
7373 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7374 | { | |
7375 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7376 | print_recreate_thread (b, fp); |
6149aea9 PA |
7377 | } |
7378 | ||
ce78b96d JB |
7379 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7380 | ||
2060206e | 7381 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7382 | |
edcc5120 TT |
7383 | /* An instance of this type is used to represent an solib catchpoint. |
7384 | It includes a "struct breakpoint" as a kind of base class; users | |
7385 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7386 | really of this type iff its ops pointer points to | |
7387 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
7388 | ||
7389 | struct solib_catchpoint | |
7390 | { | |
7391 | /* The base class. */ | |
7392 | struct breakpoint base; | |
7393 | ||
7394 | /* True for "catch load", false for "catch unload". */ | |
7395 | unsigned char is_load; | |
7396 | ||
7397 | /* Regular expression to match, if any. COMPILED is only valid when | |
7398 | REGEX is non-NULL. */ | |
7399 | char *regex; | |
7400 | regex_t compiled; | |
7401 | }; | |
7402 | ||
7403 | static void | |
7404 | dtor_catch_solib (struct breakpoint *b) | |
7405 | { | |
7406 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7407 | ||
7408 | if (self->regex) | |
7409 | regfree (&self->compiled); | |
7410 | xfree (self->regex); | |
7411 | ||
7412 | base_breakpoint_ops.dtor (b); | |
7413 | } | |
7414 | ||
7415 | static int | |
7416 | insert_catch_solib (struct bp_location *ignore) | |
7417 | { | |
7418 | return 0; | |
7419 | } | |
7420 | ||
7421 | static int | |
7422 | remove_catch_solib (struct bp_location *ignore) | |
7423 | { | |
7424 | return 0; | |
7425 | } | |
7426 | ||
7427 | static int | |
7428 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
7429 | struct address_space *aspace, | |
7430 | CORE_ADDR bp_addr, | |
7431 | const struct target_waitstatus *ws) | |
7432 | { | |
7433 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7434 | struct breakpoint *other; | |
7435 | ||
7436 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7437 | return 1; | |
7438 | ||
7439 | ALL_BREAKPOINTS (other) | |
7440 | { | |
7441 | struct bp_location *other_bl; | |
7442 | ||
7443 | if (other == bl->owner) | |
7444 | continue; | |
7445 | ||
7446 | if (other->type != bp_shlib_event) | |
7447 | continue; | |
7448 | ||
7449 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
7450 | continue; | |
7451 | ||
7452 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7453 | { | |
7454 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7455 | return 1; | |
7456 | } | |
7457 | } | |
7458 | ||
7459 | return 0; | |
7460 | } | |
7461 | ||
7462 | static void | |
7463 | check_status_catch_solib (struct bpstats *bs) | |
7464 | { | |
7465 | struct solib_catchpoint *self | |
7466 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
7467 | int ix; | |
7468 | ||
7469 | if (self->is_load) | |
7470 | { | |
7471 | struct so_list *iter; | |
7472 | ||
7473 | for (ix = 0; | |
7474 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
7475 | ix, iter); | |
7476 | ++ix) | |
7477 | { | |
7478 | if (!self->regex | |
7479 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
7480 | return; | |
7481 | } | |
7482 | } | |
7483 | else | |
7484 | { | |
7485 | char *iter; | |
7486 | ||
7487 | for (ix = 0; | |
7488 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
7489 | ix, iter); | |
7490 | ++ix) | |
7491 | { | |
7492 | if (!self->regex | |
7493 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
7494 | return; | |
7495 | } | |
7496 | } | |
7497 | ||
7498 | bs->stop = 0; | |
7499 | bs->print_it = print_it_noop; | |
7500 | } | |
7501 | ||
7502 | static enum print_stop_action | |
7503 | print_it_catch_solib (bpstat bs) | |
7504 | { | |
7505 | struct breakpoint *b = bs->breakpoint_at; | |
7506 | struct ui_out *uiout = current_uiout; | |
7507 | ||
7508 | annotate_catchpoint (b->number); | |
7509 | if (b->disposition == disp_del) | |
7510 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7511 | else | |
7512 | ui_out_text (uiout, "\nCatchpoint "); | |
7513 | ui_out_field_int (uiout, "bkptno", b->number); | |
7514 | ui_out_text (uiout, "\n"); | |
7515 | if (ui_out_is_mi_like_p (uiout)) | |
7516 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7517 | print_solib_event (1); | |
7518 | return PRINT_SRC_AND_LOC; | |
7519 | } | |
7520 | ||
7521 | static void | |
7522 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7523 | { | |
7524 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7525 | struct value_print_options opts; | |
7526 | struct ui_out *uiout = current_uiout; | |
7527 | char *msg; | |
7528 | ||
7529 | get_user_print_options (&opts); | |
7530 | /* Field 4, the address, is omitted (which makes the columns not | |
7531 | line up too nicely with the headers, but the effect is relatively | |
7532 | readable). */ | |
7533 | if (opts.addressprint) | |
7534 | { | |
7535 | annotate_field (4); | |
7536 | ui_out_field_skip (uiout, "addr"); | |
7537 | } | |
7538 | ||
7539 | annotate_field (5); | |
7540 | if (self->is_load) | |
7541 | { | |
7542 | if (self->regex) | |
7543 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
7544 | else | |
7545 | msg = xstrdup (_("load of library")); | |
7546 | } | |
7547 | else | |
7548 | { | |
7549 | if (self->regex) | |
7550 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
7551 | else | |
7552 | msg = xstrdup (_("unload of library")); | |
7553 | } | |
7554 | ui_out_field_string (uiout, "what", msg); | |
7555 | xfree (msg); | |
7556 | } | |
7557 | ||
7558 | static void | |
7559 | print_mention_catch_solib (struct breakpoint *b) | |
7560 | { | |
7561 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7562 | ||
7563 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
7564 | self->is_load ? "load" : "unload"); | |
7565 | } | |
7566 | ||
7567 | static void | |
7568 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
7569 | { | |
7570 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7571 | ||
7572 | fprintf_unfiltered (fp, "%s %s", | |
7573 | b->disposition == disp_del ? "tcatch" : "catch", | |
7574 | self->is_load ? "load" : "unload"); | |
7575 | if (self->regex) | |
7576 | fprintf_unfiltered (fp, " %s", self->regex); | |
7577 | fprintf_unfiltered (fp, "\n"); | |
7578 | } | |
7579 | ||
7580 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
7581 | ||
7582 | /* A helper function that does all the work for "catch load" and | |
7583 | "catch unload". */ | |
7584 | ||
7585 | static void | |
7586 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
7587 | struct cmd_list_element *command) | |
7588 | { | |
7589 | struct solib_catchpoint *c; | |
7590 | struct gdbarch *gdbarch = get_current_arch (); | |
7591 | int tempflag; | |
edcc5120 TT |
7592 | struct cleanup *cleanup; |
7593 | ||
7594 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7595 | ||
7596 | if (!arg) | |
7597 | arg = ""; | |
7598 | arg = skip_spaces (arg); | |
7599 | ||
7600 | c = XCNEW (struct solib_catchpoint); | |
7601 | cleanup = make_cleanup (xfree, c); | |
7602 | ||
7603 | if (*arg != '\0') | |
7604 | { | |
7605 | int errcode; | |
7606 | ||
7607 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
7608 | if (errcode != 0) | |
7609 | { | |
7610 | char *err = get_regcomp_error (errcode, &c->compiled); | |
7611 | ||
7612 | make_cleanup (xfree, err); | |
7613 | error (_("Invalid regexp (%s): %s"), err, arg); | |
7614 | } | |
7615 | c->regex = xstrdup (arg); | |
7616 | } | |
7617 | ||
7618 | c->is_load = is_load; | |
7619 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, | |
7620 | &catch_solib_breakpoint_ops); | |
7621 | ||
7622 | discard_cleanups (cleanup); | |
7623 | install_breakpoint (0, &c->base, 1); | |
7624 | } | |
7625 | ||
7626 | static void | |
7627 | catch_load_command_1 (char *arg, int from_tty, | |
7628 | struct cmd_list_element *command) | |
7629 | { | |
7630 | catch_load_or_unload (arg, from_tty, 1, command); | |
7631 | } | |
7632 | ||
7633 | static void | |
7634 | catch_unload_command_1 (char *arg, int from_tty, | |
7635 | struct cmd_list_element *command) | |
7636 | { | |
7637 | catch_load_or_unload (arg, from_tty, 0, command); | |
7638 | } | |
7639 | ||
fa3064dd YQ |
7640 | DEF_VEC_I(int); |
7641 | ||
be5c67c1 PA |
7642 | /* An instance of this type is used to represent a syscall catchpoint. |
7643 | It includes a "struct breakpoint" as a kind of base class; users | |
7644 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7645 | really of this type iff its ops pointer points to | |
7646 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
7647 | ||
7648 | struct syscall_catchpoint | |
7649 | { | |
7650 | /* The base class. */ | |
7651 | struct breakpoint base; | |
7652 | ||
7653 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
7654 | syscall has been specified for filtering, its value is NULL. | |
7655 | Otherwise, it holds a list of all syscalls to be caught. The | |
7656 | list elements are allocated with xmalloc. */ | |
7657 | VEC(int) *syscalls_to_be_caught; | |
7658 | }; | |
7659 | ||
7660 | /* Implement the "dtor" breakpoint_ops method for syscall | |
7661 | catchpoints. */ | |
7662 | ||
7663 | static void | |
7664 | dtor_catch_syscall (struct breakpoint *b) | |
7665 | { | |
7666 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
7667 | ||
7668 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 7669 | |
2060206e | 7670 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
7671 | } |
7672 | ||
fa3064dd YQ |
7673 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
7674 | ||
7675 | struct catch_syscall_inferior_data | |
7676 | { | |
7677 | /* We keep a count of the number of times the user has requested a | |
7678 | particular syscall to be tracked, and pass this information to the | |
7679 | target. This lets capable targets implement filtering directly. */ | |
7680 | ||
7681 | /* Number of times that "any" syscall is requested. */ | |
7682 | int any_syscall_count; | |
7683 | ||
7684 | /* Count of each system call. */ | |
7685 | VEC(int) *syscalls_counts; | |
7686 | ||
7687 | /* This counts all syscall catch requests, so we can readily determine | |
7688 | if any catching is necessary. */ | |
7689 | int total_syscalls_count; | |
7690 | }; | |
7691 | ||
7692 | static struct catch_syscall_inferior_data* | |
7693 | get_catch_syscall_inferior_data (struct inferior *inf) | |
7694 | { | |
7695 | struct catch_syscall_inferior_data *inf_data; | |
7696 | ||
7697 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
7698 | if (inf_data == NULL) | |
7699 | { | |
7700 | inf_data = XZALLOC (struct catch_syscall_inferior_data); | |
7701 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); | |
7702 | } | |
7703 | ||
7704 | return inf_data; | |
7705 | } | |
7706 | ||
7707 | static void | |
7708 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
7709 | { | |
7710 | xfree (arg); | |
7711 | } | |
7712 | ||
7713 | ||
a96d9b2e SDJ |
7714 | /* Implement the "insert" breakpoint_ops method for syscall |
7715 | catchpoints. */ | |
7716 | ||
77b06cd7 TJB |
7717 | static int |
7718 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 7719 | { |
be5c67c1 | 7720 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 7721 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
7722 | struct catch_syscall_inferior_data *inf_data |
7723 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 7724 | |
fa3064dd | 7725 | ++inf_data->total_syscalls_count; |
be5c67c1 | 7726 | if (!c->syscalls_to_be_caught) |
fa3064dd | 7727 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
7728 | else |
7729 | { | |
7730 | int i, iter; | |
cc59ec59 | 7731 | |
a96d9b2e | 7732 | for (i = 0; |
be5c67c1 | 7733 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7734 | i++) |
7735 | { | |
7736 | int elem; | |
cc59ec59 | 7737 | |
fa3064dd | 7738 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 7739 | { |
fa3064dd | 7740 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
7741 | uintptr_t vec_addr_offset |
7742 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 7743 | uintptr_t vec_addr; |
fa3064dd YQ |
7744 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
7745 | vec_addr = ((uintptr_t) VEC_address (int, | |
7746 | inf_data->syscalls_counts) | |
7747 | + vec_addr_offset); | |
a96d9b2e SDJ |
7748 | memset ((void *) vec_addr, 0, |
7749 | (iter + 1 - old_size) * sizeof (int)); | |
7750 | } | |
fa3064dd YQ |
7751 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
7752 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
7753 | } |
7754 | } | |
7755 | ||
77b06cd7 | 7756 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
fa3064dd YQ |
7757 | inf_data->total_syscalls_count != 0, |
7758 | inf_data->any_syscall_count, | |
7759 | VEC_length (int, | |
7760 | inf_data->syscalls_counts), | |
7761 | VEC_address (int, | |
7762 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
7763 | } |
7764 | ||
7765 | /* Implement the "remove" breakpoint_ops method for syscall | |
7766 | catchpoints. */ | |
7767 | ||
7768 | static int | |
77b06cd7 | 7769 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 7770 | { |
be5c67c1 | 7771 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 7772 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
7773 | struct catch_syscall_inferior_data *inf_data |
7774 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 7775 | |
fa3064dd | 7776 | --inf_data->total_syscalls_count; |
be5c67c1 | 7777 | if (!c->syscalls_to_be_caught) |
fa3064dd | 7778 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
7779 | else |
7780 | { | |
7781 | int i, iter; | |
cc59ec59 | 7782 | |
a96d9b2e | 7783 | for (i = 0; |
be5c67c1 | 7784 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7785 | i++) |
7786 | { | |
7787 | int elem; | |
fa3064dd | 7788 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
7789 | /* Shouldn't happen. */ |
7790 | continue; | |
fa3064dd YQ |
7791 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
7792 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
7793 | } |
7794 | } | |
7795 | ||
7796 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
fa3064dd YQ |
7797 | inf_data->total_syscalls_count != 0, |
7798 | inf_data->any_syscall_count, | |
7799 | VEC_length (int, | |
7800 | inf_data->syscalls_counts), | |
3e43a32a | 7801 | VEC_address (int, |
fa3064dd | 7802 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
7803 | } |
7804 | ||
7805 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
7806 | catchpoints. */ | |
7807 | ||
7808 | static int | |
f1310107 | 7809 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
7810 | struct address_space *aspace, CORE_ADDR bp_addr, |
7811 | const struct target_waitstatus *ws) | |
a96d9b2e | 7812 | { |
4a64f543 MS |
7813 | /* We must check if we are catching specific syscalls in this |
7814 | breakpoint. If we are, then we must guarantee that the called | |
7815 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 7816 | int syscall_number = 0; |
be5c67c1 PA |
7817 | const struct syscall_catchpoint *c |
7818 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 7819 | |
f90263c1 TT |
7820 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
7821 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
7822 | return 0; |
7823 | ||
f90263c1 TT |
7824 | syscall_number = ws->value.syscall_number; |
7825 | ||
a96d9b2e | 7826 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 7827 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
7828 | { |
7829 | int i, iter; | |
cc59ec59 | 7830 | |
a96d9b2e | 7831 | for (i = 0; |
be5c67c1 | 7832 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7833 | i++) |
7834 | if (syscall_number == iter) | |
7835 | break; | |
7836 | /* Not the same. */ | |
7837 | if (!iter) | |
7838 | return 0; | |
7839 | } | |
7840 | ||
7841 | return 1; | |
7842 | } | |
7843 | ||
7844 | /* Implement the "print_it" breakpoint_ops method for syscall | |
7845 | catchpoints. */ | |
7846 | ||
7847 | static enum print_stop_action | |
348d480f | 7848 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 7849 | { |
36dfb11c | 7850 | struct ui_out *uiout = current_uiout; |
348d480f | 7851 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
7852 | /* These are needed because we want to know in which state a |
7853 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
7854 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
7855 | must print "called syscall" or "returned from syscall". */ | |
7856 | ptid_t ptid; | |
7857 | struct target_waitstatus last; | |
7858 | struct syscall s; | |
a96d9b2e SDJ |
7859 | |
7860 | get_last_target_status (&ptid, &last); | |
7861 | ||
7862 | get_syscall_by_number (last.value.syscall_number, &s); | |
7863 | ||
7864 | annotate_catchpoint (b->number); | |
7865 | ||
36dfb11c TT |
7866 | if (b->disposition == disp_del) |
7867 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 7868 | else |
36dfb11c TT |
7869 | ui_out_text (uiout, "\nCatchpoint "); |
7870 | if (ui_out_is_mi_like_p (uiout)) | |
7871 | { | |
7872 | ui_out_field_string (uiout, "reason", | |
7873 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
7874 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
7875 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
7876 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7877 | } | |
7878 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
7879 | |
7880 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
7881 | ui_out_text (uiout, " (call to syscall "); |
7882 | else | |
7883 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 7884 | |
36dfb11c TT |
7885 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
7886 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
7887 | if (s.name != NULL) | |
7888 | ui_out_field_string (uiout, "syscall-name", s.name); | |
7889 | ||
7890 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
7891 | |
7892 | return PRINT_SRC_AND_LOC; | |
7893 | } | |
7894 | ||
7895 | /* Implement the "print_one" breakpoint_ops method for syscall | |
7896 | catchpoints. */ | |
7897 | ||
7898 | static void | |
7899 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 7900 | struct bp_location **last_loc) |
a96d9b2e | 7901 | { |
be5c67c1 | 7902 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 7903 | struct value_print_options opts; |
79a45e25 | 7904 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
7905 | |
7906 | get_user_print_options (&opts); | |
4a64f543 MS |
7907 | /* Field 4, the address, is omitted (which makes the columns not |
7908 | line up too nicely with the headers, but the effect is relatively | |
7909 | readable). */ | |
a96d9b2e SDJ |
7910 | if (opts.addressprint) |
7911 | ui_out_field_skip (uiout, "addr"); | |
7912 | annotate_field (5); | |
7913 | ||
be5c67c1 PA |
7914 | if (c->syscalls_to_be_caught |
7915 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
7916 | ui_out_text (uiout, "syscalls \""); |
7917 | else | |
7918 | ui_out_text (uiout, "syscall \""); | |
7919 | ||
be5c67c1 | 7920 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
7921 | { |
7922 | int i, iter; | |
7923 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 7924 | |
a96d9b2e | 7925 | for (i = 0; |
be5c67c1 | 7926 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7927 | i++) |
7928 | { | |
7929 | char *x = text; | |
7930 | struct syscall s; | |
7931 | get_syscall_by_number (iter, &s); | |
7932 | ||
7933 | if (s.name != NULL) | |
7934 | text = xstrprintf ("%s%s, ", text, s.name); | |
7935 | else | |
7936 | text = xstrprintf ("%s%d, ", text, iter); | |
7937 | ||
7938 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 7939 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
7940 | on every call. */ |
7941 | xfree (x); | |
7942 | } | |
7943 | /* Remove the last comma. */ | |
7944 | text[strlen (text) - 2] = '\0'; | |
7945 | ui_out_field_string (uiout, "what", text); | |
7946 | } | |
7947 | else | |
7948 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
7949 | ui_out_text (uiout, "\" "); | |
7950 | } | |
7951 | ||
7952 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
7953 | catchpoints. */ | |
7954 | ||
7955 | static void | |
7956 | print_mention_catch_syscall (struct breakpoint *b) | |
7957 | { | |
be5c67c1 PA |
7958 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
7959 | ||
7960 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
7961 | { |
7962 | int i, iter; | |
7963 | ||
be5c67c1 | 7964 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
7965 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
7966 | else | |
7967 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
7968 | ||
7969 | for (i = 0; | |
be5c67c1 | 7970 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7971 | i++) |
7972 | { | |
7973 | struct syscall s; | |
7974 | get_syscall_by_number (iter, &s); | |
7975 | ||
7976 | if (s.name) | |
7977 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
7978 | else | |
7979 | printf_filtered (" %d", s.number); | |
7980 | } | |
7981 | printf_filtered (")"); | |
7982 | } | |
7983 | else | |
7984 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
7985 | b->number); | |
7986 | } | |
7987 | ||
6149aea9 PA |
7988 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
7989 | catchpoints. */ | |
7990 | ||
7991 | static void | |
7992 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
7993 | { | |
be5c67c1 PA |
7994 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
7995 | ||
6149aea9 PA |
7996 | fprintf_unfiltered (fp, "catch syscall"); |
7997 | ||
be5c67c1 | 7998 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
7999 | { |
8000 | int i, iter; | |
8001 | ||
8002 | for (i = 0; | |
be5c67c1 | 8003 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
8004 | i++) |
8005 | { | |
8006 | struct syscall s; | |
8007 | ||
8008 | get_syscall_by_number (iter, &s); | |
8009 | if (s.name) | |
8010 | fprintf_unfiltered (fp, " %s", s.name); | |
8011 | else | |
8012 | fprintf_unfiltered (fp, " %d", s.number); | |
8013 | } | |
8014 | } | |
d9b3f62e | 8015 | print_recreate_thread (b, fp); |
6149aea9 PA |
8016 | } |
8017 | ||
a96d9b2e SDJ |
8018 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
8019 | ||
2060206e | 8020 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
8021 | |
8022 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
8023 | ||
8024 | static int | |
8025 | syscall_catchpoint_p (struct breakpoint *b) | |
8026 | { | |
8027 | return (b->ops == &catch_syscall_breakpoint_ops); | |
8028 | } | |
8029 | ||
346774a9 PA |
8030 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8031 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8032 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8033 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8034 | |
346774a9 PA |
8035 | static void |
8036 | init_catchpoint (struct breakpoint *b, | |
8037 | struct gdbarch *gdbarch, int tempflag, | |
8038 | char *cond_string, | |
c0a91b2b | 8039 | const struct breakpoint_ops *ops) |
c906108c | 8040 | { |
c5aa993b | 8041 | struct symtab_and_line sal; |
346774a9 | 8042 | |
fe39c653 | 8043 | init_sal (&sal); |
6c95b8df | 8044 | sal.pspace = current_program_space; |
c5aa993b | 8045 | |
28010a5d | 8046 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8047 | |
1b36a34b | 8048 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8049 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8050 | } |
8051 | ||
28010a5d | 8052 | void |
3ea46bff | 8053 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8054 | { |
8055 | add_to_breakpoint_chain (b); | |
3a5c3e22 PA |
8056 | set_breakpoint_number (internal, b); |
8057 | if (!internal) | |
8058 | mention (b); | |
c56053d2 | 8059 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8060 | |
8061 | if (update_gll) | |
8062 | update_global_location_list (1); | |
c56053d2 PA |
8063 | } |
8064 | ||
9b70b993 | 8065 | static void |
a6d9a66e UW |
8066 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8067 | int tempflag, char *cond_string, | |
c0a91b2b | 8068 | const struct breakpoint_ops *ops) |
c906108c | 8069 | { |
e29a4733 | 8070 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8071 | |
e29a4733 PA |
8072 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8073 | ||
8074 | c->forked_inferior_pid = null_ptid; | |
8075 | ||
3ea46bff | 8076 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8077 | } |
8078 | ||
fe798b75 JB |
8079 | /* Exec catchpoints. */ |
8080 | ||
b4d90040 PA |
8081 | /* An instance of this type is used to represent an exec catchpoint. |
8082 | It includes a "struct breakpoint" as a kind of base class; users | |
8083 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8084 | really of this type iff its ops pointer points to | |
8085 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8086 | ||
8087 | struct exec_catchpoint | |
8088 | { | |
8089 | /* The base class. */ | |
8090 | struct breakpoint base; | |
8091 | ||
8092 | /* Filename of a program whose exec triggered this catchpoint. | |
8093 | This field is only valid immediately after this catchpoint has | |
8094 | triggered. */ | |
8095 | char *exec_pathname; | |
8096 | }; | |
8097 | ||
8098 | /* Implement the "dtor" breakpoint_ops method for exec | |
8099 | catchpoints. */ | |
8100 | ||
8101 | static void | |
8102 | dtor_catch_exec (struct breakpoint *b) | |
8103 | { | |
8104 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8105 | ||
8106 | xfree (c->exec_pathname); | |
348d480f | 8107 | |
2060206e | 8108 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8109 | } |
8110 | ||
77b06cd7 TJB |
8111 | static int |
8112 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8113 | { |
77b06cd7 | 8114 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 8115 | } |
c906108c | 8116 | |
fe798b75 | 8117 | static int |
77b06cd7 | 8118 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
8119 | { |
8120 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
8121 | } | |
c906108c | 8122 | |
fe798b75 | 8123 | static int |
f1310107 | 8124 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8125 | struct address_space *aspace, CORE_ADDR bp_addr, |
8126 | const struct target_waitstatus *ws) | |
fe798b75 | 8127 | { |
b4d90040 PA |
8128 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8129 | ||
f90263c1 TT |
8130 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8131 | return 0; | |
8132 | ||
8133 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8134 | return 1; | |
fe798b75 | 8135 | } |
c906108c | 8136 | |
fe798b75 | 8137 | static enum print_stop_action |
348d480f | 8138 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8139 | { |
36dfb11c | 8140 | struct ui_out *uiout = current_uiout; |
348d480f | 8141 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8142 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8143 | ||
fe798b75 | 8144 | annotate_catchpoint (b->number); |
36dfb11c TT |
8145 | if (b->disposition == disp_del) |
8146 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8147 | else | |
8148 | ui_out_text (uiout, "\nCatchpoint "); | |
8149 | if (ui_out_is_mi_like_p (uiout)) | |
8150 | { | |
8151 | ui_out_field_string (uiout, "reason", | |
8152 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8153 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8154 | } | |
8155 | ui_out_field_int (uiout, "bkptno", b->number); | |
8156 | ui_out_text (uiout, " (exec'd "); | |
8157 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8158 | ui_out_text (uiout, "), "); | |
8159 | ||
fe798b75 | 8160 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8161 | } |
8162 | ||
fe798b75 | 8163 | static void |
a6d9a66e | 8164 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8165 | { |
b4d90040 | 8166 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8167 | struct value_print_options opts; |
79a45e25 | 8168 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8169 | |
8170 | get_user_print_options (&opts); | |
8171 | ||
8172 | /* Field 4, the address, is omitted (which makes the columns | |
8173 | not line up too nicely with the headers, but the effect | |
8174 | is relatively readable). */ | |
8175 | if (opts.addressprint) | |
8176 | ui_out_field_skip (uiout, "addr"); | |
8177 | annotate_field (5); | |
8178 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8179 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8180 | { |
8181 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8182 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8183 | ui_out_text (uiout, "\" "); |
8184 | } | |
8185 | } | |
8186 | ||
8187 | static void | |
8188 | print_mention_catch_exec (struct breakpoint *b) | |
8189 | { | |
8190 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8191 | } | |
8192 | ||
6149aea9 PA |
8193 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8194 | catchpoints. */ | |
8195 | ||
8196 | static void | |
8197 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8198 | { | |
8199 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8200 | print_recreate_thread (b, fp); |
6149aea9 PA |
8201 | } |
8202 | ||
2060206e | 8203 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8204 | |
a96d9b2e SDJ |
8205 | static void |
8206 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 8207 | const struct breakpoint_ops *ops) |
a96d9b2e | 8208 | { |
be5c67c1 | 8209 | struct syscall_catchpoint *c; |
a96d9b2e | 8210 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 8211 | |
be5c67c1 PA |
8212 | c = XNEW (struct syscall_catchpoint); |
8213 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
8214 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 8215 | |
3ea46bff | 8216 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
8217 | } |
8218 | ||
c906108c | 8219 | static int |
fba45db2 | 8220 | hw_breakpoint_used_count (void) |
c906108c | 8221 | { |
c906108c | 8222 | int i = 0; |
f1310107 TJB |
8223 | struct breakpoint *b; |
8224 | struct bp_location *bl; | |
c906108c SS |
8225 | |
8226 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8227 | { |
d6b74ac4 | 8228 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8229 | for (bl = b->loc; bl; bl = bl->next) |
8230 | { | |
8231 | /* Special types of hardware breakpoints may use more than | |
8232 | one register. */ | |
348d480f | 8233 | i += b->ops->resources_needed (bl); |
f1310107 | 8234 | } |
c5aa993b | 8235 | } |
c906108c SS |
8236 | |
8237 | return i; | |
8238 | } | |
8239 | ||
a1398e0c PA |
8240 | /* Returns the resources B would use if it were a hardware |
8241 | watchpoint. */ | |
8242 | ||
c906108c | 8243 | static int |
a1398e0c | 8244 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8245 | { |
c906108c | 8246 | int i = 0; |
e09342b5 | 8247 | struct bp_location *bl; |
c906108c | 8248 | |
a1398e0c PA |
8249 | if (!breakpoint_enabled (b)) |
8250 | return 0; | |
8251 | ||
8252 | for (bl = b->loc; bl; bl = bl->next) | |
8253 | { | |
8254 | /* Special types of hardware watchpoints may use more than | |
8255 | one register. */ | |
8256 | i += b->ops->resources_needed (bl); | |
8257 | } | |
8258 | ||
8259 | return i; | |
8260 | } | |
8261 | ||
8262 | /* Returns the sum the used resources of all hardware watchpoints of | |
8263 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8264 | the sum of the used resources of all hardware watchpoints of other | |
8265 | types _not_ TYPE. */ | |
8266 | ||
8267 | static int | |
8268 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8269 | enum bptype type, int *other_type_used) | |
8270 | { | |
8271 | int i = 0; | |
8272 | struct breakpoint *b; | |
8273 | ||
c906108c SS |
8274 | *other_type_used = 0; |
8275 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8276 | { |
a1398e0c PA |
8277 | if (b == except) |
8278 | continue; | |
e09342b5 TJB |
8279 | if (!breakpoint_enabled (b)) |
8280 | continue; | |
8281 | ||
a1398e0c PA |
8282 | if (b->type == type) |
8283 | i += hw_watchpoint_use_count (b); | |
8284 | else if (is_hardware_watchpoint (b)) | |
8285 | *other_type_used = 1; | |
e09342b5 TJB |
8286 | } |
8287 | ||
c906108c SS |
8288 | return i; |
8289 | } | |
8290 | ||
c906108c | 8291 | void |
fba45db2 | 8292 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8293 | { |
c5aa993b | 8294 | struct breakpoint *b; |
c906108c SS |
8295 | |
8296 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8297 | { |
cc60f2e3 | 8298 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8299 | { |
b5de0fa7 | 8300 | b->enable_state = bp_call_disabled; |
b60e7edf | 8301 | update_global_location_list (0); |
c5aa993b JM |
8302 | } |
8303 | } | |
c906108c SS |
8304 | } |
8305 | ||
8306 | void | |
fba45db2 | 8307 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8308 | { |
c5aa993b | 8309 | struct breakpoint *b; |
c906108c SS |
8310 | |
8311 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8312 | { |
cc60f2e3 | 8313 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8314 | { |
b5de0fa7 | 8315 | b->enable_state = bp_enabled; |
b60e7edf | 8316 | update_global_location_list (1); |
c5aa993b JM |
8317 | } |
8318 | } | |
c906108c SS |
8319 | } |
8320 | ||
8bea4e01 UW |
8321 | void |
8322 | disable_breakpoints_before_startup (void) | |
8323 | { | |
6c95b8df | 8324 | current_program_space->executing_startup = 1; |
f8eba3c6 | 8325 | update_global_location_list (0); |
8bea4e01 UW |
8326 | } |
8327 | ||
8328 | void | |
8329 | enable_breakpoints_after_startup (void) | |
8330 | { | |
6c95b8df | 8331 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8332 | breakpoint_re_set (); |
8bea4e01 UW |
8333 | } |
8334 | ||
c906108c SS |
8335 | |
8336 | /* Set a breakpoint that will evaporate an end of command | |
8337 | at address specified by SAL. | |
8338 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
8339 | ||
8340 | struct breakpoint * | |
a6d9a66e UW |
8341 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8342 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8343 | { |
52f0bd74 | 8344 | struct breakpoint *b; |
edb3359d DJ |
8345 | |
8346 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
8347 | one. */ | |
8348 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
8349 | ||
06edf0c0 | 8350 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8351 | b->enable_state = bp_enabled; |
8352 | b->disposition = disp_donttouch; | |
818dd999 | 8353 | b->frame_id = frame_id; |
c906108c | 8354 | |
4a64f543 MS |
8355 | /* If we're debugging a multi-threaded program, then we want |
8356 | momentary breakpoints to be active in only a single thread of | |
8357 | control. */ | |
39f77062 KB |
8358 | if (in_thread_list (inferior_ptid)) |
8359 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8360 | |
b60e7edf | 8361 | update_global_location_list_nothrow (1); |
74960c60 | 8362 | |
c906108c SS |
8363 | return b; |
8364 | } | |
611c83ae | 8365 | |
06edf0c0 PA |
8366 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
8367 | The new breakpoint will have type TYPE, and use OPS as it | |
8368 | breakpoint_ops. */ | |
e58b0e63 | 8369 | |
06edf0c0 PA |
8370 | static struct breakpoint * |
8371 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8372 | enum bptype type, | |
c0a91b2b | 8373 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
8374 | { |
8375 | struct breakpoint *copy; | |
8376 | ||
06edf0c0 | 8377 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8378 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8379 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8380 | |
a6d9a66e | 8381 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8382 | copy->loc->requested_address = orig->loc->requested_address; |
8383 | copy->loc->address = orig->loc->address; | |
8384 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8385 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8386 | copy->loc->probe = orig->loc->probe; |
e58b0e63 | 8387 | |
f8eba3c6 TT |
8388 | if (orig->loc->source_file != NULL) |
8389 | copy->loc->source_file = xstrdup (orig->loc->source_file); | |
e58b0e63 | 8390 | |
f8eba3c6 | 8391 | copy->loc->line_number = orig->loc->line_number; |
e58b0e63 PA |
8392 | copy->frame_id = orig->frame_id; |
8393 | copy->thread = orig->thread; | |
6c95b8df | 8394 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8395 | |
8396 | copy->enable_state = bp_enabled; | |
8397 | copy->disposition = disp_donttouch; | |
8398 | copy->number = internal_breakpoint_number--; | |
8399 | ||
8400 | update_global_location_list_nothrow (0); | |
8401 | return copy; | |
8402 | } | |
8403 | ||
06edf0c0 PA |
8404 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8405 | ORIG is NULL. */ | |
8406 | ||
8407 | struct breakpoint * | |
8408 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8409 | { | |
8410 | /* If there's nothing to clone, then return nothing. */ | |
8411 | if (orig == NULL) | |
8412 | return NULL; | |
8413 | ||
8414 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
8415 | } | |
8416 | ||
611c83ae | 8417 | struct breakpoint * |
a6d9a66e UW |
8418 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8419 | enum bptype type) | |
611c83ae PA |
8420 | { |
8421 | struct symtab_and_line sal; | |
8422 | ||
8423 | sal = find_pc_line (pc, 0); | |
8424 | sal.pc = pc; | |
8425 | sal.section = find_pc_overlay (pc); | |
8426 | sal.explicit_pc = 1; | |
8427 | ||
a6d9a66e | 8428 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8429 | } |
c906108c | 8430 | \f |
c5aa993b | 8431 | |
c906108c SS |
8432 | /* Tell the user we have just set a breakpoint B. */ |
8433 | ||
8434 | static void | |
fba45db2 | 8435 | mention (struct breakpoint *b) |
c906108c | 8436 | { |
348d480f | 8437 | b->ops->print_mention (b); |
79a45e25 | 8438 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8439 | return; |
c906108c SS |
8440 | printf_filtered ("\n"); |
8441 | } | |
c906108c | 8442 | \f |
c5aa993b | 8443 | |
0d381245 | 8444 | static struct bp_location * |
39d61571 | 8445 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8446 | const struct symtab_and_line *sal) |
8447 | { | |
8448 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8449 | CORE_ADDR adjusted_address; |
8450 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8451 | ||
8452 | if (loc_gdbarch == NULL) | |
8453 | loc_gdbarch = b->gdbarch; | |
8454 | ||
8455 | /* Adjust the breakpoint's address prior to allocating a location. | |
8456 | Once we call allocate_bp_location(), that mostly uninitialized | |
8457 | location will be placed on the location chain. Adjustment of the | |
8458 | breakpoint may cause target_read_memory() to be called and we do | |
8459 | not want its scan of the location chain to find a breakpoint and | |
8460 | location that's only been partially initialized. */ | |
8461 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8462 | sal->pc, b->type); | |
0d381245 | 8463 | |
39d61571 | 8464 | loc = allocate_bp_location (b); |
0d381245 VP |
8465 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
8466 | ; | |
8467 | *tmp = loc; | |
3742cc8b | 8468 | |
0d381245 | 8469 | loc->requested_address = sal->pc; |
3742cc8b | 8470 | loc->address = adjusted_address; |
6c95b8df | 8471 | loc->pspace = sal->pspace; |
55aa24fb | 8472 | loc->probe = sal->probe; |
6c95b8df | 8473 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8474 | loc->section = sal->section; |
3742cc8b | 8475 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 TT |
8476 | |
8477 | if (sal->symtab != NULL) | |
8478 | loc->source_file = xstrdup (sal->symtab->filename); | |
8479 | loc->line_number = sal->line; | |
8480 | ||
0e30163f JK |
8481 | set_breakpoint_location_function (loc, |
8482 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
8483 | return loc; |
8484 | } | |
514f746b AR |
8485 | \f |
8486 | ||
8487 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8488 | return 0 otherwise. */ | |
8489 | ||
8490 | static int | |
8491 | bp_loc_is_permanent (struct bp_location *loc) | |
8492 | { | |
8493 | int len; | |
8494 | CORE_ADDR addr; | |
1afeeb75 | 8495 | const gdb_byte *bpoint; |
514f746b | 8496 | gdb_byte *target_mem; |
939c61fa JK |
8497 | struct cleanup *cleanup; |
8498 | int retval = 0; | |
514f746b AR |
8499 | |
8500 | gdb_assert (loc != NULL); | |
8501 | ||
8502 | addr = loc->address; | |
1afeeb75 | 8503 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 8504 | |
939c61fa | 8505 | /* Software breakpoints unsupported? */ |
1afeeb75 | 8506 | if (bpoint == NULL) |
939c61fa JK |
8507 | return 0; |
8508 | ||
514f746b AR |
8509 | target_mem = alloca (len); |
8510 | ||
939c61fa JK |
8511 | /* Enable the automatic memory restoration from breakpoints while |
8512 | we read the memory. Otherwise we could say about our temporary | |
8513 | breakpoints they are permanent. */ | |
6c95b8df PA |
8514 | cleanup = save_current_space_and_thread (); |
8515 | ||
8516 | switch_to_program_space_and_thread (loc->pspace); | |
8517 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 8518 | |
514f746b | 8519 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 8520 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 8521 | retval = 1; |
514f746b | 8522 | |
939c61fa JK |
8523 | do_cleanups (cleanup); |
8524 | ||
8525 | return retval; | |
514f746b AR |
8526 | } |
8527 | ||
e7e0cddf SS |
8528 | /* The style in which to perform a dynamic printf. This is a user |
8529 | option because different output options have different tradeoffs; | |
8530 | if GDB does the printing, there is better error handling if there | |
8531 | is a problem with any of the arguments, but using an inferior | |
8532 | function lets you have special-purpose printers and sending of | |
8533 | output to the same place as compiled-in print functions. (Future | |
8534 | styles may include the ability to do a target-side printf.) */ | |
8535 | ||
8536 | static const char dprintf_style_gdb[] = "gdb"; | |
8537 | static const char dprintf_style_call[] = "call"; | |
8538 | static const char *const dprintf_style_enums[] = { | |
8539 | dprintf_style_gdb, | |
8540 | dprintf_style_call, | |
8541 | NULL | |
8542 | }; | |
8543 | static const char *dprintf_style = dprintf_style_gdb; | |
8544 | ||
8545 | /* The function to use for dynamic printf if the preferred style is to | |
8546 | call into the inferior. The value is simply a string that is | |
8547 | copied into the command, so it can be anything that GDB can | |
8548 | evaluate to a callable address, not necessarily a function name. */ | |
8549 | ||
8550 | static char *dprintf_function = ""; | |
8551 | ||
8552 | /* The channel to use for dynamic printf if the preferred style is to | |
8553 | call into the inferior; if a nonempty string, it will be passed to | |
8554 | the call as the first argument, with the format string as the | |
8555 | second. As with the dprintf function, this can be anything that | |
8556 | GDB knows how to evaluate, so in addition to common choices like | |
8557 | "stderr", this could be an app-specific expression like | |
8558 | "mystreams[curlogger]". */ | |
514f746b | 8559 | |
e7e0cddf SS |
8560 | static char *dprintf_channel = ""; |
8561 | ||
8562 | /* Build a command list for the dprintf corresponding to the current | |
8563 | settings of the dprintf style options. */ | |
8564 | ||
8565 | static void | |
8566 | update_dprintf_command_list (struct breakpoint *b) | |
8567 | { | |
8568 | char *dprintf_args = b->extra_string; | |
8569 | char *printf_line = NULL; | |
8570 | ||
8571 | if (!dprintf_args) | |
8572 | return; | |
8573 | ||
8574 | dprintf_args = skip_spaces (dprintf_args); | |
8575 | ||
8576 | /* Allow a comma, as it may have terminated a location, but don't | |
8577 | insist on it. */ | |
8578 | if (*dprintf_args == ',') | |
8579 | ++dprintf_args; | |
8580 | dprintf_args = skip_spaces (dprintf_args); | |
8581 | ||
8582 | if (*dprintf_args != '"') | |
8583 | error (_("Bad format string, missing '\"'.")); | |
8584 | ||
8585 | if (strcmp (dprintf_style, "gdb") == 0) | |
8586 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8587 | else if (strcmp (dprintf_style, "call") == 0) | |
8588 | { | |
8589 | if (!dprintf_function) | |
8590 | error (_("No function supplied for dprintf call")); | |
8591 | ||
8592 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8593 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8594 | dprintf_function, | |
8595 | dprintf_channel, | |
8596 | dprintf_args); | |
8597 | else | |
8598 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8599 | dprintf_function, | |
8600 | dprintf_args); | |
8601 | } | |
8602 | else | |
8603 | internal_error (__FILE__, __LINE__, | |
8604 | _("Invalid dprintf style.")); | |
8605 | ||
8606 | /* Manufacture a printf/continue sequence. */ | |
8607 | if (printf_line) | |
8608 | { | |
8609 | struct command_line *printf_cmd_line, *cont_cmd_line = NULL; | |
8610 | ||
8611 | cont_cmd_line = xmalloc (sizeof (struct command_line)); | |
8612 | cont_cmd_line->control_type = simple_control; | |
8613 | cont_cmd_line->body_count = 0; | |
8614 | cont_cmd_line->body_list = NULL; | |
8615 | cont_cmd_line->next = NULL; | |
8616 | cont_cmd_line->line = xstrdup ("continue"); | |
8617 | ||
8618 | printf_cmd_line = xmalloc (sizeof (struct command_line)); | |
8619 | printf_cmd_line->control_type = simple_control; | |
8620 | printf_cmd_line->body_count = 0; | |
8621 | printf_cmd_line->body_list = NULL; | |
8622 | printf_cmd_line->next = cont_cmd_line; | |
8623 | printf_cmd_line->line = printf_line; | |
8624 | ||
8625 | breakpoint_set_commands (b, printf_cmd_line); | |
8626 | } | |
8627 | } | |
8628 | ||
8629 | /* Update all dprintf commands, making their command lists reflect | |
8630 | current style settings. */ | |
8631 | ||
8632 | static void | |
8633 | update_dprintf_commands (char *args, int from_tty, | |
8634 | struct cmd_list_element *c) | |
8635 | { | |
8636 | struct breakpoint *b; | |
8637 | ||
8638 | ALL_BREAKPOINTS (b) | |
8639 | { | |
8640 | if (b->type == bp_dprintf) | |
8641 | update_dprintf_command_list (b); | |
8642 | } | |
8643 | } | |
c3f6f71d | 8644 | |
018d34a4 VP |
8645 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
8646 | as textual description of the location, and COND_STRING | |
db107f19 | 8647 | as condition expression. */ |
018d34a4 VP |
8648 | |
8649 | static void | |
d9b3f62e PA |
8650 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
8651 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8652 | char *filter, char *cond_string, |
e7e0cddf | 8653 | char *extra_string, |
d9b3f62e PA |
8654 | enum bptype type, enum bpdisp disposition, |
8655 | int thread, int task, int ignore_count, | |
c0a91b2b | 8656 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8657 | int enabled, int internal, unsigned flags, |
8658 | int display_canonical) | |
018d34a4 | 8659 | { |
0d381245 | 8660 | int i; |
018d34a4 VP |
8661 | |
8662 | if (type == bp_hardware_breakpoint) | |
8663 | { | |
fbbd034e AS |
8664 | int target_resources_ok; |
8665 | ||
8666 | i = hw_breakpoint_used_count (); | |
8667 | target_resources_ok = | |
8668 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8669 | i + 1, 0); |
8670 | if (target_resources_ok == 0) | |
8671 | error (_("No hardware breakpoint support in the target.")); | |
8672 | else if (target_resources_ok < 0) | |
8673 | error (_("Hardware breakpoints used exceeds limit.")); | |
8674 | } | |
8675 | ||
6c95b8df PA |
8676 | gdb_assert (sals.nelts > 0); |
8677 | ||
0d381245 VP |
8678 | for (i = 0; i < sals.nelts; ++i) |
8679 | { | |
8680 | struct symtab_and_line sal = sals.sals[i]; | |
8681 | struct bp_location *loc; | |
8682 | ||
8683 | if (from_tty) | |
5af949e3 UW |
8684 | { |
8685 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8686 | if (!loc_gdbarch) | |
8687 | loc_gdbarch = gdbarch; | |
8688 | ||
8689 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8690 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8691 | } |
0d381245 VP |
8692 | |
8693 | if (i == 0) | |
8694 | { | |
d9b3f62e | 8695 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8696 | b->thread = thread; |
4a306c9a | 8697 | b->task = task; |
855a6e68 | 8698 | |
0d381245 | 8699 | b->cond_string = cond_string; |
e7e0cddf | 8700 | b->extra_string = extra_string; |
0d381245 | 8701 | b->ignore_count = ignore_count; |
41447f92 | 8702 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8703 | b->disposition = disposition; |
6c95b8df | 8704 | |
44f238bb PA |
8705 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8706 | b->loc->inserted = 1; | |
8707 | ||
0fb4aa4b PA |
8708 | if (type == bp_static_tracepoint) |
8709 | { | |
d9b3f62e | 8710 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8711 | struct static_tracepoint_marker marker; |
8712 | ||
983af33b | 8713 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8714 | { |
8715 | /* We already know the marker exists, otherwise, we | |
8716 | wouldn't see a sal for it. */ | |
8717 | char *p = &addr_string[3]; | |
8718 | char *endp; | |
8719 | char *marker_str; | |
0fb4aa4b | 8720 | |
e9cafbcc | 8721 | p = skip_spaces (p); |
0fb4aa4b | 8722 | |
e9cafbcc | 8723 | endp = skip_to_space (p); |
0fb4aa4b PA |
8724 | |
8725 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 8726 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 8727 | |
3e43a32a MS |
8728 | printf_filtered (_("Probed static tracepoint " |
8729 | "marker \"%s\"\n"), | |
d9b3f62e | 8730 | t->static_trace_marker_id); |
0fb4aa4b PA |
8731 | } |
8732 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8733 | { | |
d9b3f62e | 8734 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
8735 | release_static_tracepoint_marker (&marker); |
8736 | ||
3e43a32a MS |
8737 | printf_filtered (_("Probed static tracepoint " |
8738 | "marker \"%s\"\n"), | |
d9b3f62e | 8739 | t->static_trace_marker_id); |
0fb4aa4b PA |
8740 | } |
8741 | else | |
3e43a32a MS |
8742 | warning (_("Couldn't determine the static " |
8743 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8744 | } |
8745 | ||
0d381245 VP |
8746 | loc = b->loc; |
8747 | } | |
8748 | else | |
018d34a4 | 8749 | { |
39d61571 | 8750 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8751 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8752 | loc->inserted = 1; | |
0d381245 VP |
8753 | } |
8754 | ||
514f746b AR |
8755 | if (bp_loc_is_permanent (loc)) |
8756 | make_breakpoint_permanent (b); | |
8757 | ||
0d381245 VP |
8758 | if (b->cond_string) |
8759 | { | |
8760 | char *arg = b->cond_string; | |
1bb9788d TT |
8761 | loc->cond = parse_exp_1 (&arg, loc->address, |
8762 | block_for_pc (loc->address), 0); | |
0d381245 | 8763 | if (*arg) |
588ae58c | 8764 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8765 | } |
e7e0cddf SS |
8766 | |
8767 | /* Dynamic printf requires and uses additional arguments on the | |
8768 | command line, otherwise it's an error. */ | |
8769 | if (type == bp_dprintf) | |
8770 | { | |
8771 | if (b->extra_string) | |
8772 | update_dprintf_command_list (b); | |
8773 | else | |
8774 | error (_("Format string required")); | |
8775 | } | |
8776 | else if (b->extra_string) | |
588ae58c | 8777 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 8778 | } |
018d34a4 | 8779 | |
56435ebe | 8780 | b->display_canonical = display_canonical; |
018d34a4 VP |
8781 | if (addr_string) |
8782 | b->addr_string = addr_string; | |
8783 | else | |
8784 | /* addr_string has to be used or breakpoint_re_set will delete | |
8785 | me. */ | |
5af949e3 UW |
8786 | b->addr_string |
8787 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 8788 | b->filter = filter; |
d9b3f62e | 8789 | } |
018d34a4 | 8790 | |
d9b3f62e PA |
8791 | static void |
8792 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
8793 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8794 | char *filter, char *cond_string, |
e7e0cddf | 8795 | char *extra_string, |
d9b3f62e PA |
8796 | enum bptype type, enum bpdisp disposition, |
8797 | int thread, int task, int ignore_count, | |
c0a91b2b | 8798 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8799 | int enabled, int internal, unsigned flags, |
8800 | int display_canonical) | |
d9b3f62e PA |
8801 | { |
8802 | struct breakpoint *b; | |
8803 | struct cleanup *old_chain; | |
8804 | ||
8805 | if (is_tracepoint_type (type)) | |
8806 | { | |
8807 | struct tracepoint *t; | |
8808 | ||
8809 | t = XCNEW (struct tracepoint); | |
8810 | b = &t->base; | |
8811 | } | |
8812 | else | |
8813 | b = XNEW (struct breakpoint); | |
8814 | ||
8815 | old_chain = make_cleanup (xfree, b); | |
8816 | ||
8817 | init_breakpoint_sal (b, gdbarch, | |
8818 | sals, addr_string, | |
e7e0cddf | 8819 | filter, cond_string, extra_string, |
d9b3f62e PA |
8820 | type, disposition, |
8821 | thread, task, ignore_count, | |
8822 | ops, from_tty, | |
44f238bb PA |
8823 | enabled, internal, flags, |
8824 | display_canonical); | |
d9b3f62e PA |
8825 | discard_cleanups (old_chain); |
8826 | ||
3ea46bff | 8827 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
8828 | } |
8829 | ||
8830 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8831 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8832 | value. COND_STRING, if not NULL, specified the condition to be | |
8833 | used for all breakpoints. Essentially the only case where | |
8834 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8835 | function. In that case, it's still not possible to specify | |
8836 | separate conditions for different overloaded functions, so | |
8837 | we take just a single condition string. | |
8838 | ||
c3f6f71d | 8839 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8840 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8841 | array contents). If the function fails (error() is called), the |
8842 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8843 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8844 | |
8845 | static void | |
8cdf0e15 | 8846 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8847 | struct linespec_result *canonical, |
e7e0cddf | 8848 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
8849 | enum bptype type, enum bpdisp disposition, |
8850 | int thread, int task, int ignore_count, | |
c0a91b2b | 8851 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8852 | int enabled, int internal, unsigned flags) |
c906108c | 8853 | { |
018d34a4 | 8854 | int i; |
f8eba3c6 | 8855 | struct linespec_sals *lsal; |
cc59ec59 | 8856 | |
f8eba3c6 TT |
8857 | if (canonical->pre_expanded) |
8858 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
8859 | ||
8860 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 8861 | { |
f8eba3c6 TT |
8862 | /* Note that 'addr_string' can be NULL in the case of a plain |
8863 | 'break', without arguments. */ | |
8864 | char *addr_string = (canonical->addr_string | |
8865 | ? xstrdup (canonical->addr_string) | |
8866 | : NULL); | |
8867 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
8868 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 8869 | |
f8eba3c6 TT |
8870 | make_cleanup (xfree, filter_string); |
8871 | create_breakpoint_sal (gdbarch, lsal->sals, | |
8872 | addr_string, | |
8873 | filter_string, | |
e7e0cddf SS |
8874 | cond_string, extra_string, |
8875 | type, disposition, | |
84f4c1fe | 8876 | thread, task, ignore_count, ops, |
44f238bb | 8877 | from_tty, enabled, internal, flags, |
56435ebe | 8878 | canonical->special_display); |
f8eba3c6 | 8879 | discard_cleanups (inner); |
c3f6f71d | 8880 | } |
c3f6f71d | 8881 | } |
c906108c | 8882 | |
9998af43 | 8883 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 8884 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 8885 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
8886 | address strings. ADDRESS points to the end of the SAL. |
8887 | ||
8888 | The array and the line spec strings are allocated on the heap, it is | |
8889 | the caller's responsibility to free them. */ | |
c906108c | 8890 | |
b9362cc7 | 8891 | static void |
c3f6f71d | 8892 | parse_breakpoint_sals (char **address, |
58438ac1 | 8893 | struct linespec_result *canonical) |
c3f6f71d JM |
8894 | { |
8895 | char *addr_start = *address; | |
cc59ec59 | 8896 | |
c3f6f71d | 8897 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 8898 | breakpoint. */ |
c3f6f71d JM |
8899 | if ((*address) == NULL |
8900 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 8901 | { |
1bfeeb0f JL |
8902 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
8903 | address. */ | |
8904 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8905 | { |
f8eba3c6 | 8906 | struct linespec_sals lsal; |
c3f6f71d | 8907 | struct symtab_and_line sal; |
cc59ec59 | 8908 | |
4a64f543 | 8909 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 8910 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 8911 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
8912 | |
8913 | /* Set sal's pspace, pc, symtab, and line to the values | |
8914 | corresponding to the last call to print_frame_info. */ | |
8915 | get_last_displayed_sal (&sal); | |
8916 | sal.section = find_pc_overlay (sal.pc); | |
00903456 | 8917 | |
4a64f543 | 8918 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
8919 | where PC is the last displayed codepoint's address. So |
8920 | make sure to set sal.explicit_pc to prevent GDB from | |
8921 | trying to expand the list of sals to include all other | |
8922 | instances with the same symtab and line. */ | |
00903456 JK |
8923 | sal.explicit_pc = 1; |
8924 | ||
f8eba3c6 TT |
8925 | lsal.sals.sals[0] = sal; |
8926 | lsal.sals.nelts = 1; | |
8927 | lsal.canonical = NULL; | |
8928 | ||
8929 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
8930 | } |
8931 | else | |
8a3fe4f8 | 8932 | error (_("No default breakpoint address now.")); |
c906108c SS |
8933 | } |
8934 | else | |
8935 | { | |
cc80f267 JK |
8936 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
8937 | ||
c906108c | 8938 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
8939 | current_source_symtab (which is decode_line_1's default). |
8940 | This should produce the results we want almost all of the | |
cc80f267 JK |
8941 | time while leaving default_breakpoint_* alone. |
8942 | ||
8943 | ObjC: However, don't match an Objective-C method name which | |
8944 | may have a '+' or '-' succeeded by a '['. */ | |
8945 | if (last_displayed_sal_is_valid () | |
8946 | && (!cursal.symtab | |
8947 | || ((strchr ("+-", (*address)[0]) != NULL) | |
8948 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
8949 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
8950 | get_last_displayed_symtab (), | |
8951 | get_last_displayed_line (), | |
8952 | canonical, NULL, NULL); | |
c906108c | 8953 | else |
f8eba3c6 | 8954 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 8955 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 8956 | } |
c3f6f71d | 8957 | } |
c906108c | 8958 | |
c906108c | 8959 | |
c3f6f71d | 8960 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 8961 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 8962 | |
b9362cc7 | 8963 | static void |
23e7acfb | 8964 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
8965 | { |
8966 | int i; | |
cc59ec59 | 8967 | |
c3f6f71d | 8968 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 8969 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
8970 | } |
8971 | ||
7a697b8d SS |
8972 | /* Fast tracepoints may have restrictions on valid locations. For |
8973 | instance, a fast tracepoint using a jump instead of a trap will | |
8974 | likely have to overwrite more bytes than a trap would, and so can | |
8975 | only be placed where the instruction is longer than the jump, or a | |
8976 | multi-instruction sequence does not have a jump into the middle of | |
8977 | it, etc. */ | |
8978 | ||
8979 | static void | |
8980 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
8981 | struct symtabs_and_lines *sals) | |
8982 | { | |
8983 | int i, rslt; | |
8984 | struct symtab_and_line *sal; | |
8985 | char *msg; | |
8986 | struct cleanup *old_chain; | |
8987 | ||
8988 | for (i = 0; i < sals->nelts; i++) | |
8989 | { | |
f8eba3c6 TT |
8990 | struct gdbarch *sarch; |
8991 | ||
7a697b8d SS |
8992 | sal = &sals->sals[i]; |
8993 | ||
f8eba3c6 TT |
8994 | sarch = get_sal_arch (*sal); |
8995 | /* We fall back to GDBARCH if there is no architecture | |
8996 | associated with SAL. */ | |
8997 | if (sarch == NULL) | |
8998 | sarch = gdbarch; | |
8999 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9000 | NULL, &msg); |
9001 | old_chain = make_cleanup (xfree, msg); | |
9002 | ||
9003 | if (!rslt) | |
9004 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9005 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9006 | |
9007 | do_cleanups (old_chain); | |
9008 | } | |
9009 | } | |
9010 | ||
018d34a4 VP |
9011 | /* Given TOK, a string specification of condition and thread, as |
9012 | accepted by the 'break' command, extract the condition | |
9013 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9014 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9015 | If no condition is found, *COND_STRING is set to NULL. |
9016 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9017 | |
9018 | static void | |
9019 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
e7e0cddf SS |
9020 | char **cond_string, int *thread, int *task, |
9021 | char **rest) | |
018d34a4 VP |
9022 | { |
9023 | *cond_string = NULL; | |
9024 | *thread = -1; | |
9025 | while (tok && *tok) | |
9026 | { | |
9027 | char *end_tok; | |
9028 | int toklen; | |
9029 | char *cond_start = NULL; | |
9030 | char *cond_end = NULL; | |
cc59ec59 | 9031 | |
e9cafbcc | 9032 | tok = skip_spaces (tok); |
e7e0cddf SS |
9033 | |
9034 | if ((*tok == '"' || *tok == ',') && rest) | |
9035 | { | |
9036 | *rest = savestring (tok, strlen (tok)); | |
9037 | return; | |
9038 | } | |
9039 | ||
e9cafbcc | 9040 | end_tok = skip_to_space (tok); |
d634f2de | 9041 | |
018d34a4 | 9042 | toklen = end_tok - tok; |
d634f2de | 9043 | |
018d34a4 VP |
9044 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9045 | { | |
f7545552 TT |
9046 | struct expression *expr; |
9047 | ||
018d34a4 | 9048 | tok = cond_start = end_tok + 1; |
1bb9788d | 9049 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9050 | xfree (expr); |
018d34a4 | 9051 | cond_end = tok; |
d634f2de | 9052 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9053 | } |
9054 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9055 | { | |
9056 | char *tmptok; | |
d634f2de | 9057 | |
018d34a4 VP |
9058 | tok = end_tok + 1; |
9059 | tmptok = tok; | |
9060 | *thread = strtol (tok, &tok, 0); | |
9061 | if (tok == tmptok) | |
9062 | error (_("Junk after thread keyword.")); | |
9063 | if (!valid_thread_id (*thread)) | |
9064 | error (_("Unknown thread %d."), *thread); | |
9065 | } | |
4a306c9a JB |
9066 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9067 | { | |
9068 | char *tmptok; | |
9069 | ||
9070 | tok = end_tok + 1; | |
9071 | tmptok = tok; | |
9072 | *task = strtol (tok, &tok, 0); | |
9073 | if (tok == tmptok) | |
9074 | error (_("Junk after task keyword.")); | |
9075 | if (!valid_task_id (*task)) | |
b6199126 | 9076 | error (_("Unknown task %d."), *task); |
4a306c9a | 9077 | } |
e7e0cddf SS |
9078 | else if (rest) |
9079 | { | |
9080 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9081 | return; |
e7e0cddf | 9082 | } |
018d34a4 VP |
9083 | else |
9084 | error (_("Junk at end of arguments.")); | |
9085 | } | |
9086 | } | |
9087 | ||
0fb4aa4b PA |
9088 | /* Decode a static tracepoint marker spec. */ |
9089 | ||
9090 | static struct symtabs_and_lines | |
9091 | decode_static_tracepoint_spec (char **arg_p) | |
9092 | { | |
9093 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9094 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9095 | struct cleanup *old_chain; |
9096 | char *p = &(*arg_p)[3]; | |
9097 | char *endp; | |
9098 | char *marker_str; | |
9099 | int i; | |
9100 | ||
e9cafbcc | 9101 | p = skip_spaces (p); |
0fb4aa4b | 9102 | |
e9cafbcc | 9103 | endp = skip_to_space (p); |
0fb4aa4b PA |
9104 | |
9105 | marker_str = savestring (p, endp - p); | |
9106 | old_chain = make_cleanup (xfree, marker_str); | |
9107 | ||
9108 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9109 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9110 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9111 | ||
9112 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9113 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9114 | ||
9115 | for (i = 0; i < sals.nelts; i++) | |
9116 | { | |
9117 | struct static_tracepoint_marker *marker; | |
9118 | ||
9119 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9120 | ||
9121 | init_sal (&sals.sals[i]); | |
9122 | ||
9123 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9124 | sals.sals[i].pc = marker->address; | |
9125 | ||
9126 | release_static_tracepoint_marker (marker); | |
9127 | } | |
9128 | ||
9129 | do_cleanups (old_chain); | |
9130 | ||
9131 | *arg_p = endp; | |
9132 | return sals; | |
9133 | } | |
9134 | ||
fd9b8c24 PA |
9135 | /* Set a breakpoint. This function is shared between CLI and MI |
9136 | functions for setting a breakpoint. This function has two major | |
9137 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
9138 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
9139 | breakpoint location, address and thread. Otherwise, ARG is just |
9140 | the location of breakpoint, with condition and thread specified by | |
9141 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
9142 | the breakpoint number will be allocated from the internal | |
9143 | breakpoint count. Returns true if any breakpoint was created; | |
9144 | false otherwise. */ | |
0101ce28 | 9145 | |
8cdf0e15 VP |
9146 | int |
9147 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9148 | char *arg, char *cond_string, |
9149 | int thread, char *extra_string, | |
8cdf0e15 | 9150 | int parse_condition_and_thread, |
0fb4aa4b | 9151 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9152 | int ignore_count, |
9153 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9154 | const struct breakpoint_ops *ops, |
44f238bb PA |
9155 | int from_tty, int enabled, int internal, |
9156 | unsigned flags) | |
c3f6f71d | 9157 | { |
b78a6381 | 9158 | volatile struct gdb_exception e; |
f8eba3c6 | 9159 | char *copy_arg = NULL; |
c3f6f71d | 9160 | char *addr_start = arg; |
7efd8fc2 | 9161 | struct linespec_result canonical; |
c3f6f71d | 9162 | struct cleanup *old_chain; |
80c99de1 | 9163 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9164 | int pending = 0; |
4a306c9a | 9165 | int task = 0; |
86b17b60 | 9166 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9167 | |
348d480f PA |
9168 | gdb_assert (ops != NULL); |
9169 | ||
7efd8fc2 | 9170 | init_linespec_result (&canonical); |
c3f6f71d | 9171 | |
b78a6381 TT |
9172 | TRY_CATCH (e, RETURN_MASK_ALL) |
9173 | { | |
983af33b SDJ |
9174 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9175 | addr_start, ©_arg); | |
b78a6381 | 9176 | } |
0101ce28 JJ |
9177 | |
9178 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 9179 | switch (e.reason) |
0101ce28 | 9180 | { |
983af33b SDJ |
9181 | case GDB_NO_ERROR: |
9182 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9183 | return 0; | |
9184 | break; | |
05ff989b AC |
9185 | case RETURN_ERROR: |
9186 | switch (e.error) | |
0101ce28 | 9187 | { |
05ff989b | 9188 | case NOT_FOUND_ERROR: |
0101ce28 | 9189 | |
05ff989b AC |
9190 | /* If pending breakpoint support is turned off, throw |
9191 | error. */ | |
fa8d40ab JJ |
9192 | |
9193 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9194 | throw_exception (e); |
9195 | ||
9196 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9197 | |
05ff989b AC |
9198 | /* If pending breakpoint support is auto query and the user |
9199 | selects no, then simply return the error code. */ | |
059fb39f | 9200 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9201 | && !nquery (_("Make %s pending on future shared library load? "), |
9202 | bptype_string (type_wanted))) | |
fd9b8c24 | 9203 | return 0; |
fa8d40ab | 9204 | |
05ff989b AC |
9205 | /* At this point, either the user was queried about setting |
9206 | a pending breakpoint and selected yes, or pending | |
9207 | breakpoint behavior is on and thus a pending breakpoint | |
9208 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9209 | { |
9210 | struct linespec_sals lsal; | |
9211 | ||
9212 | copy_arg = xstrdup (addr_start); | |
9213 | lsal.canonical = xstrdup (copy_arg); | |
9214 | lsal.sals.nelts = 1; | |
9215 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9216 | init_sal (&lsal.sals.sals[0]); | |
9217 | pending = 1; | |
9218 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9219 | } | |
05ff989b AC |
9220 | break; |
9221 | default: | |
98deb0da | 9222 | throw_exception (e); |
0101ce28 | 9223 | } |
2abae994 | 9224 | break; |
05ff989b | 9225 | default: |
983af33b | 9226 | throw_exception (e); |
0101ce28 | 9227 | } |
c3f6f71d | 9228 | |
4a64f543 | 9229 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9230 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9231 | |
c3f6f71d JM |
9232 | /* ----------------------------- SNIP ----------------------------- |
9233 | Anything added to the cleanup chain beyond this point is assumed | |
9234 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9235 | then the memory is not reclaimed. */ |
9236 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9237 | |
c3f6f71d JM |
9238 | /* Resolve all line numbers to PC's and verify that the addresses |
9239 | are ok for the target. */ | |
0101ce28 | 9240 | if (!pending) |
f8eba3c6 TT |
9241 | { |
9242 | int ix; | |
9243 | struct linespec_sals *iter; | |
9244 | ||
9245 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9246 | breakpoint_sals_to_pc (&iter->sals); | |
9247 | } | |
c3f6f71d | 9248 | |
7a697b8d | 9249 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9250 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9251 | { |
9252 | int ix; | |
9253 | struct linespec_sals *iter; | |
9254 | ||
9255 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9256 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9257 | } | |
7a697b8d | 9258 | |
c3f6f71d JM |
9259 | /* Verify that condition can be parsed, before setting any |
9260 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9261 | breakpoint. */ |
0101ce28 | 9262 | if (!pending) |
c3f6f71d | 9263 | { |
f8eba3c6 TT |
9264 | struct linespec_sals *lsal; |
9265 | ||
9266 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9267 | ||
2f069f6f | 9268 | if (parse_condition_and_thread) |
72b2ff0e | 9269 | { |
e7e0cddf | 9270 | char *rest; |
72b2ff0e VP |
9271 | /* Here we only parse 'arg' to separate condition |
9272 | from thread number, so parsing in context of first | |
9273 | sal is OK. When setting the breakpoint we'll | |
9274 | re-parse it in context of each sal. */ | |
9275 | cond_string = NULL; | |
9276 | thread = -1; | |
e7e0cddf | 9277 | rest = NULL; |
f8eba3c6 | 9278 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
e7e0cddf | 9279 | &thread, &task, &rest); |
72b2ff0e VP |
9280 | if (cond_string) |
9281 | make_cleanup (xfree, cond_string); | |
e7e0cddf SS |
9282 | if (rest) |
9283 | make_cleanup (xfree, rest); | |
9284 | if (rest) | |
9285 | extra_string = rest; | |
72b2ff0e | 9286 | } |
2f069f6f | 9287 | else |
72b2ff0e VP |
9288 | { |
9289 | /* Create a private copy of condition string. */ | |
9290 | if (cond_string) | |
9291 | { | |
9292 | cond_string = xstrdup (cond_string); | |
9293 | make_cleanup (xfree, cond_string); | |
9294 | } | |
e7e0cddf SS |
9295 | /* Create a private copy of any extra string. */ |
9296 | if (extra_string) | |
9297 | { | |
9298 | extra_string = xstrdup (extra_string); | |
9299 | make_cleanup (xfree, extra_string); | |
9300 | } | |
72b2ff0e | 9301 | } |
0fb4aa4b | 9302 | |
983af33b | 9303 | ops->create_breakpoints_sal (gdbarch, &canonical, lsal, |
e7e0cddf | 9304 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9305 | tempflag ? disp_del : disp_donttouch, |
9306 | thread, task, ignore_count, ops, | |
44f238bb | 9307 | from_tty, enabled, internal, flags); |
c906108c | 9308 | } |
0101ce28 JJ |
9309 | else |
9310 | { | |
0101ce28 JJ |
9311 | struct breakpoint *b; |
9312 | ||
0101ce28 JJ |
9313 | make_cleanup (xfree, copy_arg); |
9314 | ||
bfccc43c YQ |
9315 | if (is_tracepoint_type (type_wanted)) |
9316 | { | |
9317 | struct tracepoint *t; | |
9318 | ||
9319 | t = XCNEW (struct tracepoint); | |
9320 | b = &t->base; | |
9321 | } | |
9322 | else | |
9323 | b = XNEW (struct breakpoint); | |
9324 | ||
9325 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9326 | ||
f8eba3c6 | 9327 | b->addr_string = copy_arg; |
72b2ff0e | 9328 | b->cond_string = NULL; |
e7e0cddf | 9329 | b->extra_string = NULL; |
0101ce28 | 9330 | b->ignore_count = ignore_count; |
0101ce28 | 9331 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9332 | b->condition_not_parsed = 1; |
41447f92 | 9333 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9334 | if ((type_wanted != bp_breakpoint |
9335 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9336 | b->pspace = current_program_space; |
8bea4e01 | 9337 | |
bfccc43c | 9338 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9339 | } |
9340 | ||
f8eba3c6 | 9341 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9342 | { |
3e43a32a MS |
9343 | warning (_("Multiple breakpoints were set.\nUse the " |
9344 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9345 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9346 | } |
9347 | ||
80c99de1 PA |
9348 | /* That's it. Discard the cleanups for data inserted into the |
9349 | breakpoint. */ | |
9350 | discard_cleanups (bkpt_chain); | |
9351 | /* But cleanup everything else. */ | |
c3f6f71d | 9352 | do_cleanups (old_chain); |
217dc9e2 | 9353 | |
80c99de1 | 9354 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 9355 | update_global_location_list (1); |
fd9b8c24 PA |
9356 | |
9357 | return 1; | |
c3f6f71d | 9358 | } |
c906108c | 9359 | |
348d480f | 9360 | /* Set a breakpoint. |
72b2ff0e VP |
9361 | ARG is a string describing breakpoint address, |
9362 | condition, and thread. | |
9363 | FLAG specifies if a breakpoint is hardware on, | |
9364 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9365 | and BP_TEMPFLAG. */ | |
348d480f | 9366 | |
98deb0da | 9367 | static void |
72b2ff0e | 9368 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9369 | { |
72b2ff0e | 9370 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9371 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9372 | ? bp_hardware_breakpoint | |
9373 | : bp_breakpoint); | |
55aa24fb SDJ |
9374 | struct breakpoint_ops *ops; |
9375 | const char *arg_cp = arg; | |
9376 | ||
9377 | /* Matching breakpoints on probes. */ | |
9378 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9379 | ops = &bkpt_probe_breakpoint_ops; | |
9380 | else | |
9381 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9382 | |
8cdf0e15 VP |
9383 | create_breakpoint (get_current_arch (), |
9384 | arg, | |
e7e0cddf | 9385 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9386 | tempflag, type_wanted, |
8cdf0e15 VP |
9387 | 0 /* Ignore count */, |
9388 | pending_break_support, | |
55aa24fb | 9389 | ops, |
8cdf0e15 | 9390 | from_tty, |
84f4c1fe | 9391 | 1 /* enabled */, |
44f238bb PA |
9392 | 0 /* internal */, |
9393 | 0); | |
c906108c SS |
9394 | } |
9395 | ||
c906108c SS |
9396 | /* Helper function for break_command_1 and disassemble_command. */ |
9397 | ||
9398 | void | |
fba45db2 | 9399 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9400 | { |
9401 | CORE_ADDR pc; | |
9402 | ||
9403 | if (sal->pc == 0 && sal->symtab != NULL) | |
9404 | { | |
9405 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9406 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
9407 | sal->line, sal->symtab->filename); |
9408 | sal->pc = pc; | |
6a048695 | 9409 | |
4a64f543 MS |
9410 | /* If this SAL corresponds to a breakpoint inserted using a line |
9411 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9412 | if (sal->explicit_line) |
059acae7 | 9413 | skip_prologue_sal (sal); |
c906108c SS |
9414 | } |
9415 | ||
9416 | if (sal->section == 0 && sal->symtab != NULL) | |
9417 | { | |
9418 | struct blockvector *bv; | |
c5aa993b JM |
9419 | struct block *b; |
9420 | struct symbol *sym; | |
c906108c | 9421 | |
801e3a5b | 9422 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
9423 | if (bv != NULL) |
9424 | { | |
7f0df278 | 9425 | sym = block_linkage_function (b); |
c906108c SS |
9426 | if (sym != NULL) |
9427 | { | |
9428 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 9429 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
9430 | } |
9431 | else | |
9432 | { | |
4a64f543 MS |
9433 | /* It really is worthwhile to have the section, so we'll |
9434 | just have to look harder. This case can be executed | |
9435 | if we have line numbers but no functions (as can | |
9436 | happen in assembly source). */ | |
c906108c | 9437 | |
c5aa993b | 9438 | struct minimal_symbol *msym; |
6c95b8df PA |
9439 | struct cleanup *old_chain = save_current_space_and_thread (); |
9440 | ||
9441 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9442 | |
9443 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
9444 | if (msym) | |
714835d5 | 9445 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
9446 | |
9447 | do_cleanups (old_chain); | |
c906108c SS |
9448 | } |
9449 | } | |
9450 | } | |
9451 | } | |
9452 | ||
9453 | void | |
fba45db2 | 9454 | break_command (char *arg, int from_tty) |
c906108c | 9455 | { |
db107f19 | 9456 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9457 | } |
9458 | ||
c906108c | 9459 | void |
fba45db2 | 9460 | tbreak_command (char *arg, int from_tty) |
c906108c | 9461 | { |
db107f19 | 9462 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9463 | } |
9464 | ||
c906108c | 9465 | static void |
fba45db2 | 9466 | hbreak_command (char *arg, int from_tty) |
c906108c | 9467 | { |
db107f19 | 9468 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9469 | } |
9470 | ||
9471 | static void | |
fba45db2 | 9472 | thbreak_command (char *arg, int from_tty) |
c906108c | 9473 | { |
db107f19 | 9474 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9475 | } |
9476 | ||
9477 | static void | |
fba45db2 | 9478 | stop_command (char *arg, int from_tty) |
c906108c | 9479 | { |
a3f17187 | 9480 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9481 | Usage: stop in <function | address>\n\ |
a3f17187 | 9482 | stop at <line>\n")); |
c906108c SS |
9483 | } |
9484 | ||
9485 | static void | |
fba45db2 | 9486 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9487 | { |
9488 | int badInput = 0; | |
9489 | ||
c5aa993b | 9490 | if (arg == (char *) NULL) |
c906108c SS |
9491 | badInput = 1; |
9492 | else if (*arg != '*') | |
9493 | { | |
9494 | char *argptr = arg; | |
9495 | int hasColon = 0; | |
9496 | ||
4a64f543 | 9497 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9498 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9499 | function/method name. */ |
c906108c | 9500 | while (*argptr && !hasColon) |
c5aa993b JM |
9501 | { |
9502 | hasColon = (*argptr == ':'); | |
9503 | argptr++; | |
9504 | } | |
c906108c SS |
9505 | |
9506 | if (hasColon) | |
c5aa993b | 9507 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9508 | else |
c5aa993b | 9509 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9510 | } |
9511 | ||
9512 | if (badInput) | |
a3f17187 | 9513 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9514 | else |
db107f19 | 9515 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9516 | } |
9517 | ||
9518 | static void | |
fba45db2 | 9519 | stopat_command (char *arg, int from_tty) |
c906108c SS |
9520 | { |
9521 | int badInput = 0; | |
9522 | ||
c5aa993b | 9523 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9524 | badInput = 1; |
9525 | else | |
9526 | { | |
9527 | char *argptr = arg; | |
9528 | int hasColon = 0; | |
9529 | ||
4a64f543 MS |
9530 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9531 | it is probably a line number. */ | |
c906108c | 9532 | while (*argptr && !hasColon) |
c5aa993b JM |
9533 | { |
9534 | hasColon = (*argptr == ':'); | |
9535 | argptr++; | |
9536 | } | |
c906108c SS |
9537 | |
9538 | if (hasColon) | |
c5aa993b | 9539 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9540 | else |
c5aa993b | 9541 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9542 | } |
9543 | ||
9544 | if (badInput) | |
a3f17187 | 9545 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9546 | else |
db107f19 | 9547 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9548 | } |
9549 | ||
e7e0cddf SS |
9550 | void dprintf_command (char *arg, int from_tty); |
9551 | ||
9552 | /* The dynamic printf command is mostly like a regular breakpoint, but | |
9553 | with a prewired command list consisting of a single output command, | |
9554 | built from extra arguments supplied on the dprintf command | |
9555 | line. */ | |
9556 | ||
9557 | void | |
9558 | dprintf_command (char *arg, int from_tty) | |
9559 | { | |
9560 | create_breakpoint (get_current_arch (), | |
9561 | arg, | |
9562 | NULL, 0, NULL, 1 /* parse arg */, | |
9563 | 0, bp_dprintf, | |
9564 | 0 /* Ignore count */, | |
9565 | pending_break_support, | |
9566 | &dprintf_breakpoint_ops, | |
9567 | from_tty, | |
9568 | 1 /* enabled */, | |
9569 | 0 /* internal */, | |
9570 | 0); | |
9571 | } | |
9572 | ||
f1310107 TJB |
9573 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9574 | ranged breakpoints. */ | |
9575 | ||
9576 | static int | |
9577 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9578 | struct address_space *aspace, | |
09ac7c10 TT |
9579 | CORE_ADDR bp_addr, |
9580 | const struct target_waitstatus *ws) | |
f1310107 | 9581 | { |
09ac7c10 | 9582 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9583 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9584 | return 0; |
9585 | ||
f1310107 TJB |
9586 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9587 | bl->length, aspace, bp_addr); | |
9588 | } | |
9589 | ||
9590 | /* Implement the "resources_needed" breakpoint_ops method for | |
9591 | ranged breakpoints. */ | |
9592 | ||
9593 | static int | |
9594 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9595 | { | |
9596 | return target_ranged_break_num_registers (); | |
9597 | } | |
9598 | ||
9599 | /* Implement the "print_it" breakpoint_ops method for | |
9600 | ranged breakpoints. */ | |
9601 | ||
9602 | static enum print_stop_action | |
348d480f | 9603 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9604 | { |
348d480f | 9605 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9606 | struct bp_location *bl = b->loc; |
79a45e25 | 9607 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9608 | |
9609 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9610 | ||
9611 | /* Ranged breakpoints have only one location. */ | |
9612 | gdb_assert (bl && bl->next == NULL); | |
9613 | ||
9614 | annotate_breakpoint (b->number); | |
9615 | if (b->disposition == disp_del) | |
9616 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
9617 | else | |
9618 | ui_out_text (uiout, "\nRanged breakpoint "); | |
9619 | if (ui_out_is_mi_like_p (uiout)) | |
9620 | { | |
9621 | ui_out_field_string (uiout, "reason", | |
9622 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9623 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9624 | } | |
9625 | ui_out_field_int (uiout, "bkptno", b->number); | |
9626 | ui_out_text (uiout, ", "); | |
9627 | ||
9628 | return PRINT_SRC_AND_LOC; | |
9629 | } | |
9630 | ||
9631 | /* Implement the "print_one" breakpoint_ops method for | |
9632 | ranged breakpoints. */ | |
9633 | ||
9634 | static void | |
9635 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9636 | struct bp_location **last_loc) | |
9637 | { | |
9638 | struct bp_location *bl = b->loc; | |
9639 | struct value_print_options opts; | |
79a45e25 | 9640 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9641 | |
9642 | /* Ranged breakpoints have only one location. */ | |
9643 | gdb_assert (bl && bl->next == NULL); | |
9644 | ||
9645 | get_user_print_options (&opts); | |
9646 | ||
9647 | if (opts.addressprint) | |
9648 | /* We don't print the address range here, it will be printed later | |
9649 | by print_one_detail_ranged_breakpoint. */ | |
9650 | ui_out_field_skip (uiout, "addr"); | |
9651 | annotate_field (5); | |
9652 | print_breakpoint_location (b, bl); | |
9653 | *last_loc = bl; | |
9654 | } | |
9655 | ||
9656 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9657 | ranged breakpoints. */ | |
9658 | ||
9659 | static void | |
9660 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9661 | struct ui_out *uiout) | |
9662 | { | |
9663 | CORE_ADDR address_start, address_end; | |
9664 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
9665 | struct ui_file *stb = mem_fileopen (); |
9666 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
9667 | |
9668 | gdb_assert (bl); | |
9669 | ||
9670 | address_start = bl->address; | |
9671 | address_end = address_start + bl->length - 1; | |
9672 | ||
9673 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 9674 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
9675 | print_core_address (bl->gdbarch, address_start), |
9676 | print_core_address (bl->gdbarch, address_end)); | |
9677 | ui_out_field_stream (uiout, "addr", stb); | |
9678 | ui_out_text (uiout, "\n"); | |
9679 | ||
9680 | do_cleanups (cleanup); | |
9681 | } | |
9682 | ||
9683 | /* Implement the "print_mention" breakpoint_ops method for | |
9684 | ranged breakpoints. */ | |
9685 | ||
9686 | static void | |
9687 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9688 | { | |
9689 | struct bp_location *bl = b->loc; | |
79a45e25 | 9690 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9691 | |
9692 | gdb_assert (bl); | |
9693 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9694 | ||
9695 | if (ui_out_is_mi_like_p (uiout)) | |
9696 | return; | |
9697 | ||
9698 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9699 | b->number, paddress (bl->gdbarch, bl->address), | |
9700 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9701 | } | |
9702 | ||
9703 | /* Implement the "print_recreate" breakpoint_ops method for | |
9704 | ranged breakpoints. */ | |
9705 | ||
9706 | static void | |
9707 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9708 | { | |
9709 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
9710 | b->addr_string_range_end); | |
d9b3f62e | 9711 | print_recreate_thread (b, fp); |
f1310107 TJB |
9712 | } |
9713 | ||
9714 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9715 | ||
2060206e | 9716 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9717 | |
9718 | /* Find the address where the end of the breakpoint range should be | |
9719 | placed, given the SAL of the end of the range. This is so that if | |
9720 | the user provides a line number, the end of the range is set to the | |
9721 | last instruction of the given line. */ | |
9722 | ||
9723 | static CORE_ADDR | |
9724 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9725 | { | |
9726 | CORE_ADDR end; | |
9727 | ||
9728 | /* If the user provided a PC value, use it. Otherwise, | |
9729 | find the address of the end of the given location. */ | |
9730 | if (sal.explicit_pc) | |
9731 | end = sal.pc; | |
9732 | else | |
9733 | { | |
9734 | int ret; | |
9735 | CORE_ADDR start; | |
9736 | ||
9737 | ret = find_line_pc_range (sal, &start, &end); | |
9738 | if (!ret) | |
9739 | error (_("Could not find location of the end of the range.")); | |
9740 | ||
9741 | /* find_line_pc_range returns the start of the next line. */ | |
9742 | end--; | |
9743 | } | |
9744 | ||
9745 | return end; | |
9746 | } | |
9747 | ||
9748 | /* Implement the "break-range" CLI command. */ | |
9749 | ||
9750 | static void | |
9751 | break_range_command (char *arg, int from_tty) | |
9752 | { | |
9753 | char *arg_start, *addr_string_start, *addr_string_end; | |
9754 | struct linespec_result canonical_start, canonical_end; | |
9755 | int bp_count, can_use_bp, length; | |
9756 | CORE_ADDR end; | |
9757 | struct breakpoint *b; | |
9758 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 9759 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 9760 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
9761 | |
9762 | /* We don't support software ranged breakpoints. */ | |
9763 | if (target_ranged_break_num_registers () < 0) | |
9764 | error (_("This target does not support hardware ranged breakpoints.")); | |
9765 | ||
9766 | bp_count = hw_breakpoint_used_count (); | |
9767 | bp_count += target_ranged_break_num_registers (); | |
9768 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9769 | bp_count, 0); | |
9770 | if (can_use_bp < 0) | |
9771 | error (_("Hardware breakpoints used exceeds limit.")); | |
9772 | ||
f8eba3c6 | 9773 | arg = skip_spaces (arg); |
f1310107 TJB |
9774 | if (arg == NULL || arg[0] == '\0') |
9775 | error(_("No address range specified.")); | |
9776 | ||
f1310107 TJB |
9777 | init_linespec_result (&canonical_start); |
9778 | ||
f8eba3c6 TT |
9779 | arg_start = arg; |
9780 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 9781 | |
f8eba3c6 | 9782 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
9783 | |
9784 | if (arg[0] != ',') | |
9785 | error (_("Too few arguments.")); | |
f8eba3c6 | 9786 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 9787 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
9788 | |
9789 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
9790 | ||
9791 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
9792 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
9793 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9794 | ||
f8eba3c6 TT |
9795 | sal_start = lsal_start->sals.sals[0]; |
9796 | addr_string_start = savestring (arg_start, arg - arg_start); | |
9797 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
9798 | |
9799 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9800 | arg = skip_spaces (arg); |
f1310107 TJB |
9801 | |
9802 | /* Parse the end location. */ | |
9803 | ||
f1310107 TJB |
9804 | init_linespec_result (&canonical_end); |
9805 | arg_start = arg; | |
9806 | ||
f8eba3c6 | 9807 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9808 | parse_breakpoint_sals because we need to specify the start location's |
9809 | symtab and line as the default symtab and line for the end of the | |
9810 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9811 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
9812 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
9813 | sal_start.symtab, sal_start.line, | |
9814 | &canonical_end, NULL, NULL); | |
9815 | ||
9816 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 9817 | |
f8eba3c6 | 9818 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 9819 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
9820 | |
9821 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
9822 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
9823 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
9824 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9825 | ||
f8eba3c6 TT |
9826 | sal_end = lsal_end->sals.sals[0]; |
9827 | addr_string_end = savestring (arg_start, arg - arg_start); | |
9828 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
9829 | |
9830 | end = find_breakpoint_range_end (sal_end); | |
9831 | if (sal_start.pc > end) | |
177b42fe | 9832 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9833 | |
9834 | length = end - sal_start.pc + 1; | |
9835 | if (length < 0) | |
9836 | /* Length overflowed. */ | |
9837 | error (_("Address range too large.")); | |
9838 | else if (length == 1) | |
9839 | { | |
9840 | /* This range is simple enough to be handled by | |
9841 | the `hbreak' command. */ | |
9842 | hbreak_command (addr_string_start, 1); | |
9843 | ||
9844 | do_cleanups (cleanup_bkpt); | |
9845 | ||
9846 | return; | |
9847 | } | |
9848 | ||
9849 | /* Now set up the breakpoint. */ | |
9850 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9851 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9852 | set_breakpoint_count (breakpoint_count + 1); |
9853 | b->number = breakpoint_count; | |
9854 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
9855 | b->addr_string = xstrdup (addr_string_start); |
9856 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
9857 | b->loc->length = length; |
9858 | ||
f8eba3c6 | 9859 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
9860 | |
9861 | mention (b); | |
8d3788bd | 9862 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
9863 | update_global_location_list (1); |
9864 | } | |
9865 | ||
4a64f543 MS |
9866 | /* Return non-zero if EXP is verified as constant. Returned zero |
9867 | means EXP is variable. Also the constant detection may fail for | |
9868 | some constant expressions and in such case still falsely return | |
9869 | zero. */ | |
2e6e3d9c | 9870 | |
65d79d4b SDJ |
9871 | static int |
9872 | watchpoint_exp_is_const (const struct expression *exp) | |
9873 | { | |
9874 | int i = exp->nelts; | |
9875 | ||
9876 | while (i > 0) | |
9877 | { | |
9878 | int oplenp, argsp; | |
9879 | ||
9880 | /* We are only interested in the descriptor of each element. */ | |
9881 | operator_length (exp, i, &oplenp, &argsp); | |
9882 | i -= oplenp; | |
9883 | ||
9884 | switch (exp->elts[i].opcode) | |
9885 | { | |
9886 | case BINOP_ADD: | |
9887 | case BINOP_SUB: | |
9888 | case BINOP_MUL: | |
9889 | case BINOP_DIV: | |
9890 | case BINOP_REM: | |
9891 | case BINOP_MOD: | |
9892 | case BINOP_LSH: | |
9893 | case BINOP_RSH: | |
9894 | case BINOP_LOGICAL_AND: | |
9895 | case BINOP_LOGICAL_OR: | |
9896 | case BINOP_BITWISE_AND: | |
9897 | case BINOP_BITWISE_IOR: | |
9898 | case BINOP_BITWISE_XOR: | |
9899 | case BINOP_EQUAL: | |
9900 | case BINOP_NOTEQUAL: | |
9901 | case BINOP_LESS: | |
9902 | case BINOP_GTR: | |
9903 | case BINOP_LEQ: | |
9904 | case BINOP_GEQ: | |
9905 | case BINOP_REPEAT: | |
9906 | case BINOP_COMMA: | |
9907 | case BINOP_EXP: | |
9908 | case BINOP_MIN: | |
9909 | case BINOP_MAX: | |
9910 | case BINOP_INTDIV: | |
9911 | case BINOP_CONCAT: | |
9912 | case BINOP_IN: | |
9913 | case BINOP_RANGE: | |
9914 | case TERNOP_COND: | |
9915 | case TERNOP_SLICE: | |
9916 | case TERNOP_SLICE_COUNT: | |
9917 | ||
9918 | case OP_LONG: | |
9919 | case OP_DOUBLE: | |
9920 | case OP_DECFLOAT: | |
9921 | case OP_LAST: | |
9922 | case OP_COMPLEX: | |
9923 | case OP_STRING: | |
9924 | case OP_BITSTRING: | |
9925 | case OP_ARRAY: | |
9926 | case OP_TYPE: | |
9927 | case OP_NAME: | |
9928 | case OP_OBJC_NSSTRING: | |
9929 | ||
9930 | case UNOP_NEG: | |
9931 | case UNOP_LOGICAL_NOT: | |
9932 | case UNOP_COMPLEMENT: | |
9933 | case UNOP_ADDR: | |
9934 | case UNOP_HIGH: | |
aeaa2474 | 9935 | case UNOP_CAST: |
4a64f543 MS |
9936 | /* Unary, binary and ternary operators: We have to check |
9937 | their operands. If they are constant, then so is the | |
9938 | result of that operation. For instance, if A and B are | |
9939 | determined to be constants, then so is "A + B". | |
9940 | ||
9941 | UNOP_IND is one exception to the rule above, because the | |
9942 | value of *ADDR is not necessarily a constant, even when | |
9943 | ADDR is. */ | |
65d79d4b SDJ |
9944 | break; |
9945 | ||
9946 | case OP_VAR_VALUE: | |
9947 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9948 | |
65d79d4b | 9949 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9950 | possible that a buggy compiler could mark a variable as |
9951 | constant even when it is not, and TYPE_CONST would return | |
9952 | true in this case, while SYMBOL_CLASS wouldn't. | |
9953 | ||
9954 | We also have to check for function symbols because they | |
9955 | are always constant. */ | |
65d79d4b SDJ |
9956 | { |
9957 | struct symbol *s = exp->elts[i + 2].symbol; | |
9958 | ||
9959 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9960 | && SYMBOL_CLASS (s) != LOC_CONST | |
9961 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9962 | return 0; | |
9963 | break; | |
9964 | } | |
9965 | ||
9966 | /* The default action is to return 0 because we are using | |
9967 | the optimistic approach here: If we don't know something, | |
9968 | then it is not a constant. */ | |
9969 | default: | |
9970 | return 0; | |
9971 | } | |
9972 | } | |
9973 | ||
9974 | return 1; | |
9975 | } | |
9976 | ||
3a5c3e22 PA |
9977 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
9978 | ||
9979 | static void | |
9980 | dtor_watchpoint (struct breakpoint *self) | |
9981 | { | |
9982 | struct watchpoint *w = (struct watchpoint *) self; | |
9983 | ||
9984 | xfree (w->cond_exp); | |
9985 | xfree (w->exp); | |
9986 | xfree (w->exp_string); | |
9987 | xfree (w->exp_string_reparse); | |
9988 | value_free (w->val); | |
9989 | ||
9990 | base_breakpoint_ops.dtor (self); | |
9991 | } | |
9992 | ||
348d480f PA |
9993 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
9994 | ||
9995 | static void | |
9996 | re_set_watchpoint (struct breakpoint *b) | |
9997 | { | |
3a5c3e22 PA |
9998 | struct watchpoint *w = (struct watchpoint *) b; |
9999 | ||
348d480f PA |
10000 | /* Watchpoint can be either on expression using entirely global |
10001 | variables, or it can be on local variables. | |
10002 | ||
10003 | Watchpoints of the first kind are never auto-deleted, and even | |
10004 | persist across program restarts. Since they can use variables | |
10005 | from shared libraries, we need to reparse expression as libraries | |
10006 | are loaded and unloaded. | |
10007 | ||
10008 | Watchpoints on local variables can also change meaning as result | |
10009 | of solib event. For example, if a watchpoint uses both a local | |
10010 | and a global variables in expression, it's a local watchpoint, | |
10011 | but unloading of a shared library will make the expression | |
10012 | invalid. This is not a very common use case, but we still | |
10013 | re-evaluate expression, to avoid surprises to the user. | |
10014 | ||
10015 | Note that for local watchpoints, we re-evaluate it only if | |
10016 | watchpoints frame id is still valid. If it's not, it means the | |
10017 | watchpoint is out of scope and will be deleted soon. In fact, | |
10018 | I'm not sure we'll ever be called in this case. | |
10019 | ||
10020 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10021 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10022 | |
3a5c3e22 PA |
10023 | Don't do anything about disabled watchpoints, since they will be |
10024 | reevaluated again when enabled. */ | |
10025 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10026 | } |
10027 | ||
77b06cd7 TJB |
10028 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10029 | ||
10030 | static int | |
10031 | insert_watchpoint (struct bp_location *bl) | |
10032 | { | |
3a5c3e22 PA |
10033 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10034 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10035 | |
10036 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10037 | w->cond_exp); |
77b06cd7 TJB |
10038 | } |
10039 | ||
10040 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10041 | ||
10042 | static int | |
10043 | remove_watchpoint (struct bp_location *bl) | |
10044 | { | |
3a5c3e22 PA |
10045 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10046 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10047 | |
10048 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10049 | w->cond_exp); |
e09342b5 TJB |
10050 | } |
10051 | ||
e09342b5 | 10052 | static int |
348d480f | 10053 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10054 | struct address_space *aspace, CORE_ADDR bp_addr, |
10055 | const struct target_waitstatus *ws) | |
e09342b5 | 10056 | { |
348d480f | 10057 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10058 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10059 | |
348d480f PA |
10060 | /* Continuable hardware watchpoints are treated as non-existent if the |
10061 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10062 | some data address). Otherwise gdb won't stop on a break instruction | |
10063 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10064 | been defined. Also skip watchpoints which we know did not trigger | |
10065 | (did not match the data address). */ | |
10066 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10067 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10068 | return 0; |
9c06b0b4 | 10069 | |
348d480f | 10070 | return 1; |
9c06b0b4 TJB |
10071 | } |
10072 | ||
348d480f PA |
10073 | static void |
10074 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10075 | { |
348d480f | 10076 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10077 | |
348d480f | 10078 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10079 | } |
10080 | ||
10081 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10082 | hardware watchpoints. */ |
9c06b0b4 TJB |
10083 | |
10084 | static int | |
348d480f | 10085 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10086 | { |
3a5c3e22 PA |
10087 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10088 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10089 | |
10090 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10091 | } |
10092 | ||
10093 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10094 | hardware watchpoints. */ |
9c06b0b4 TJB |
10095 | |
10096 | static int | |
348d480f | 10097 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10098 | { |
efa80663 PA |
10099 | /* Read and access watchpoints only work with hardware support. */ |
10100 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10101 | } |
10102 | ||
9c06b0b4 | 10103 | static enum print_stop_action |
348d480f | 10104 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10105 | { |
348d480f PA |
10106 | struct cleanup *old_chain; |
10107 | struct breakpoint *b; | |
10108 | const struct bp_location *bl; | |
f99d8bf4 | 10109 | struct ui_file *stb; |
348d480f | 10110 | enum print_stop_action result; |
3a5c3e22 | 10111 | struct watchpoint *w; |
79a45e25 | 10112 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10113 | |
10114 | gdb_assert (bs->bp_location_at != NULL); | |
10115 | ||
10116 | bl = bs->bp_location_at; | |
10117 | b = bs->breakpoint_at; | |
3a5c3e22 | 10118 | w = (struct watchpoint *) b; |
348d480f | 10119 | |
f99d8bf4 PA |
10120 | stb = mem_fileopen (); |
10121 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10122 | |
10123 | switch (b->type) | |
10124 | { | |
348d480f | 10125 | case bp_watchpoint: |
9c06b0b4 TJB |
10126 | case bp_hardware_watchpoint: |
10127 | annotate_watchpoint (b->number); | |
10128 | if (ui_out_is_mi_like_p (uiout)) | |
10129 | ui_out_field_string | |
10130 | (uiout, "reason", | |
10131 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10132 | mention (b); |
10133 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10134 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10135 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10136 | ui_out_field_stream (uiout, "old", stb); |
10137 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10138 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10139 | ui_out_field_stream (uiout, "new", stb); |
10140 | ui_out_text (uiout, "\n"); | |
10141 | /* More than one watchpoint may have been triggered. */ | |
10142 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10143 | break; |
10144 | ||
10145 | case bp_read_watchpoint: | |
10146 | if (ui_out_is_mi_like_p (uiout)) | |
10147 | ui_out_field_string | |
10148 | (uiout, "reason", | |
10149 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10150 | mention (b); |
10151 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10152 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10153 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10154 | ui_out_field_stream (uiout, "value", stb); |
10155 | ui_out_text (uiout, "\n"); | |
10156 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10157 | break; |
10158 | ||
10159 | case bp_access_watchpoint: | |
348d480f PA |
10160 | if (bs->old_val != NULL) |
10161 | { | |
10162 | annotate_watchpoint (b->number); | |
10163 | if (ui_out_is_mi_like_p (uiout)) | |
10164 | ui_out_field_string | |
10165 | (uiout, "reason", | |
10166 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10167 | mention (b); | |
10168 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10169 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10170 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10171 | ui_out_field_stream (uiout, "old", stb); |
10172 | ui_out_text (uiout, "\nNew value = "); | |
10173 | } | |
10174 | else | |
10175 | { | |
10176 | mention (b); | |
10177 | if (ui_out_is_mi_like_p (uiout)) | |
10178 | ui_out_field_string | |
10179 | (uiout, "reason", | |
10180 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10181 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10182 | ui_out_text (uiout, "\nValue = "); | |
10183 | } | |
f99d8bf4 | 10184 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10185 | ui_out_field_stream (uiout, "new", stb); |
10186 | ui_out_text (uiout, "\n"); | |
10187 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10188 | break; |
10189 | default: | |
348d480f | 10190 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10191 | } |
10192 | ||
348d480f PA |
10193 | do_cleanups (old_chain); |
10194 | return result; | |
10195 | } | |
10196 | ||
10197 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10198 | watchpoints. */ | |
10199 | ||
10200 | static void | |
10201 | print_mention_watchpoint (struct breakpoint *b) | |
10202 | { | |
10203 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10204 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10205 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10206 | |
10207 | switch (b->type) | |
10208 | { | |
10209 | case bp_watchpoint: | |
10210 | ui_out_text (uiout, "Watchpoint "); | |
10211 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10212 | break; | |
10213 | case bp_hardware_watchpoint: | |
10214 | ui_out_text (uiout, "Hardware watchpoint "); | |
10215 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10216 | break; | |
10217 | case bp_read_watchpoint: | |
10218 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10219 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10220 | break; | |
10221 | case bp_access_watchpoint: | |
10222 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10223 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10224 | break; | |
10225 | default: | |
10226 | internal_error (__FILE__, __LINE__, | |
10227 | _("Invalid hardware watchpoint type.")); | |
10228 | } | |
10229 | ||
10230 | ui_out_field_int (uiout, "number", b->number); | |
10231 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10232 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10233 | do_cleanups (ui_out_chain); |
10234 | } | |
10235 | ||
10236 | /* Implement the "print_recreate" breakpoint_ops method for | |
10237 | watchpoints. */ | |
10238 | ||
10239 | static void | |
10240 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10241 | { | |
3a5c3e22 PA |
10242 | struct watchpoint *w = (struct watchpoint *) b; |
10243 | ||
348d480f PA |
10244 | switch (b->type) |
10245 | { | |
10246 | case bp_watchpoint: | |
10247 | case bp_hardware_watchpoint: | |
10248 | fprintf_unfiltered (fp, "watch"); | |
10249 | break; | |
10250 | case bp_read_watchpoint: | |
10251 | fprintf_unfiltered (fp, "rwatch"); | |
10252 | break; | |
10253 | case bp_access_watchpoint: | |
10254 | fprintf_unfiltered (fp, "awatch"); | |
10255 | break; | |
10256 | default: | |
10257 | internal_error (__FILE__, __LINE__, | |
10258 | _("Invalid watchpoint type.")); | |
10259 | } | |
10260 | ||
3a5c3e22 | 10261 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10262 | print_recreate_thread (b, fp); |
348d480f PA |
10263 | } |
10264 | ||
10265 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
10266 | ||
2060206e | 10267 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10268 | |
10269 | /* Implement the "insert" breakpoint_ops method for | |
10270 | masked hardware watchpoints. */ | |
10271 | ||
10272 | static int | |
10273 | insert_masked_watchpoint (struct bp_location *bl) | |
10274 | { | |
3a5c3e22 PA |
10275 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10276 | ||
10277 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10278 | bl->watchpoint_type); |
10279 | } | |
10280 | ||
10281 | /* Implement the "remove" breakpoint_ops method for | |
10282 | masked hardware watchpoints. */ | |
10283 | ||
10284 | static int | |
10285 | remove_masked_watchpoint (struct bp_location *bl) | |
10286 | { | |
3a5c3e22 PA |
10287 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10288 | ||
10289 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10290 | bl->watchpoint_type); |
10291 | } | |
10292 | ||
10293 | /* Implement the "resources_needed" breakpoint_ops method for | |
10294 | masked hardware watchpoints. */ | |
10295 | ||
10296 | static int | |
10297 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10298 | { | |
3a5c3e22 PA |
10299 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10300 | ||
10301 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10302 | } |
10303 | ||
10304 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10305 | masked hardware watchpoints. */ | |
10306 | ||
10307 | static int | |
10308 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10309 | { | |
10310 | return 0; | |
10311 | } | |
10312 | ||
10313 | /* Implement the "print_it" breakpoint_ops method for | |
10314 | masked hardware watchpoints. */ | |
10315 | ||
10316 | static enum print_stop_action | |
10317 | print_it_masked_watchpoint (bpstat bs) | |
10318 | { | |
10319 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10320 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10321 | |
10322 | /* Masked watchpoints have only one location. */ | |
10323 | gdb_assert (b->loc && b->loc->next == NULL); | |
10324 | ||
10325 | switch (b->type) | |
10326 | { | |
10327 | case bp_hardware_watchpoint: | |
10328 | annotate_watchpoint (b->number); | |
10329 | if (ui_out_is_mi_like_p (uiout)) | |
10330 | ui_out_field_string | |
10331 | (uiout, "reason", | |
10332 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10333 | break; | |
10334 | ||
10335 | case bp_read_watchpoint: | |
10336 | if (ui_out_is_mi_like_p (uiout)) | |
10337 | ui_out_field_string | |
10338 | (uiout, "reason", | |
10339 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10340 | break; | |
10341 | ||
10342 | case bp_access_watchpoint: | |
10343 | if (ui_out_is_mi_like_p (uiout)) | |
10344 | ui_out_field_string | |
10345 | (uiout, "reason", | |
10346 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10347 | break; | |
10348 | default: | |
10349 | internal_error (__FILE__, __LINE__, | |
10350 | _("Invalid hardware watchpoint type.")); | |
10351 | } | |
10352 | ||
10353 | mention (b); | |
9c06b0b4 TJB |
10354 | ui_out_text (uiout, _("\n\ |
10355 | Check the underlying instruction at PC for the memory\n\ | |
10356 | address and value which triggered this watchpoint.\n")); | |
10357 | ui_out_text (uiout, "\n"); | |
10358 | ||
10359 | /* More than one watchpoint may have been triggered. */ | |
10360 | return PRINT_UNKNOWN; | |
10361 | } | |
10362 | ||
10363 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10364 | masked hardware watchpoints. */ | |
10365 | ||
10366 | static void | |
10367 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10368 | struct ui_out *uiout) | |
10369 | { | |
3a5c3e22 PA |
10370 | struct watchpoint *w = (struct watchpoint *) b; |
10371 | ||
9c06b0b4 TJB |
10372 | /* Masked watchpoints have only one location. */ |
10373 | gdb_assert (b->loc && b->loc->next == NULL); | |
10374 | ||
10375 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10376 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10377 | ui_out_text (uiout, "\n"); |
10378 | } | |
10379 | ||
10380 | /* Implement the "print_mention" breakpoint_ops method for | |
10381 | masked hardware watchpoints. */ | |
10382 | ||
10383 | static void | |
10384 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10385 | { | |
3a5c3e22 | 10386 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10387 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10388 | struct cleanup *ui_out_chain; |
10389 | ||
10390 | switch (b->type) | |
10391 | { | |
10392 | case bp_hardware_watchpoint: | |
10393 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10394 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10395 | break; | |
10396 | case bp_read_watchpoint: | |
10397 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10398 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10399 | break; | |
10400 | case bp_access_watchpoint: | |
10401 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10402 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10403 | break; | |
10404 | default: | |
10405 | internal_error (__FILE__, __LINE__, | |
10406 | _("Invalid hardware watchpoint type.")); | |
10407 | } | |
10408 | ||
10409 | ui_out_field_int (uiout, "number", b->number); | |
10410 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10411 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10412 | do_cleanups (ui_out_chain); |
10413 | } | |
10414 | ||
10415 | /* Implement the "print_recreate" breakpoint_ops method for | |
10416 | masked hardware watchpoints. */ | |
10417 | ||
10418 | static void | |
10419 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10420 | { | |
3a5c3e22 | 10421 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10422 | char tmp[40]; |
10423 | ||
10424 | switch (b->type) | |
10425 | { | |
10426 | case bp_hardware_watchpoint: | |
10427 | fprintf_unfiltered (fp, "watch"); | |
10428 | break; | |
10429 | case bp_read_watchpoint: | |
10430 | fprintf_unfiltered (fp, "rwatch"); | |
10431 | break; | |
10432 | case bp_access_watchpoint: | |
10433 | fprintf_unfiltered (fp, "awatch"); | |
10434 | break; | |
10435 | default: | |
10436 | internal_error (__FILE__, __LINE__, | |
10437 | _("Invalid hardware watchpoint type.")); | |
10438 | } | |
10439 | ||
3a5c3e22 PA |
10440 | sprintf_vma (tmp, w->hw_wp_mask); |
10441 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10442 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10443 | } |
10444 | ||
10445 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10446 | ||
2060206e | 10447 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10448 | |
10449 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10450 | ||
10451 | static int | |
10452 | is_masked_watchpoint (const struct breakpoint *b) | |
10453 | { | |
10454 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10455 | } | |
10456 | ||
53a5351d JM |
10457 | /* accessflag: hw_write: watch write, |
10458 | hw_read: watch read, | |
10459 | hw_access: watch access (read or write) */ | |
c906108c | 10460 | static void |
84f4c1fe PM |
10461 | watch_command_1 (char *arg, int accessflag, int from_tty, |
10462 | int just_location, int internal) | |
c906108c | 10463 | { |
a9634178 | 10464 | volatile struct gdb_exception e; |
d983da9c | 10465 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10466 | struct expression *exp; |
60e1c644 | 10467 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10468 | struct value *val, *mark, *result; |
c906108c | 10469 | struct frame_info *frame; |
c906108c SS |
10470 | char *exp_start = NULL; |
10471 | char *exp_end = NULL; | |
9c06b0b4 TJB |
10472 | char *tok, *end_tok; |
10473 | int toklen = -1; | |
c906108c SS |
10474 | char *cond_start = NULL; |
10475 | char *cond_end = NULL; | |
c906108c | 10476 | enum bptype bp_type; |
37e4754d | 10477 | int thread = -1; |
0cf6dd15 | 10478 | int pc = 0; |
9c06b0b4 TJB |
10479 | /* Flag to indicate whether we are going to use masks for |
10480 | the hardware watchpoint. */ | |
10481 | int use_mask = 0; | |
10482 | CORE_ADDR mask = 0; | |
3a5c3e22 | 10483 | struct watchpoint *w; |
c906108c | 10484 | |
37e4754d LM |
10485 | /* Make sure that we actually have parameters to parse. */ |
10486 | if (arg != NULL && arg[0] != '\0') | |
10487 | { | |
9c06b0b4 | 10488 | char *value_start; |
37e4754d | 10489 | |
9c06b0b4 TJB |
10490 | /* Look for "parameter value" pairs at the end |
10491 | of the arguments string. */ | |
10492 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
10493 | { | |
10494 | /* Skip whitespace at the end of the argument list. */ | |
10495 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10496 | tok--; | |
10497 | ||
10498 | /* Find the beginning of the last token. | |
10499 | This is the value of the parameter. */ | |
10500 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10501 | tok--; | |
10502 | value_start = tok + 1; | |
10503 | ||
10504 | /* Skip whitespace. */ | |
10505 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10506 | tok--; | |
10507 | ||
10508 | end_tok = tok; | |
10509 | ||
10510 | /* Find the beginning of the second to last token. | |
10511 | This is the parameter itself. */ | |
10512 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10513 | tok--; | |
10514 | tok++; | |
10515 | toklen = end_tok - tok + 1; | |
10516 | ||
10517 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
10518 | { | |
10519 | /* At this point we've found a "thread" token, which means | |
10520 | the user is trying to set a watchpoint that triggers | |
10521 | only in a specific thread. */ | |
10522 | char *endp; | |
37e4754d | 10523 | |
9c06b0b4 TJB |
10524 | if (thread != -1) |
10525 | error(_("You can specify only one thread.")); | |
37e4754d | 10526 | |
9c06b0b4 TJB |
10527 | /* Extract the thread ID from the next token. */ |
10528 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 10529 | |
9c06b0b4 TJB |
10530 | /* Check if the user provided a valid numeric value for the |
10531 | thread ID. */ | |
10532 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
10533 | error (_("Invalid thread ID specification %s."), value_start); | |
10534 | ||
10535 | /* Check if the thread actually exists. */ | |
10536 | if (!valid_thread_id (thread)) | |
10537 | error (_("Unknown thread %d."), thread); | |
10538 | } | |
10539 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
10540 | { | |
10541 | /* We've found a "mask" token, which means the user wants to | |
10542 | create a hardware watchpoint that is going to have the mask | |
10543 | facility. */ | |
10544 | struct value *mask_value, *mark; | |
37e4754d | 10545 | |
9c06b0b4 TJB |
10546 | if (use_mask) |
10547 | error(_("You can specify only one mask.")); | |
37e4754d | 10548 | |
9c06b0b4 | 10549 | use_mask = just_location = 1; |
37e4754d | 10550 | |
9c06b0b4 TJB |
10551 | mark = value_mark (); |
10552 | mask_value = parse_to_comma_and_eval (&value_start); | |
10553 | mask = value_as_address (mask_value); | |
10554 | value_free_to_mark (mark); | |
10555 | } | |
10556 | else | |
10557 | /* We didn't recognize what we found. We should stop here. */ | |
10558 | break; | |
37e4754d | 10559 | |
9c06b0b4 TJB |
10560 | /* Truncate the string and get rid of the "parameter value" pair before |
10561 | the arguments string is parsed by the parse_exp_1 function. */ | |
10562 | *tok = '\0'; | |
10563 | } | |
37e4754d LM |
10564 | } |
10565 | ||
10566 | /* Parse the rest of the arguments. */ | |
c906108c SS |
10567 | innermost_block = NULL; |
10568 | exp_start = arg; | |
1bb9788d | 10569 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10570 | exp_end = arg; |
fa8a61dc TT |
10571 | /* Remove trailing whitespace from the expression before saving it. |
10572 | This makes the eventual display of the expression string a bit | |
10573 | prettier. */ | |
10574 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10575 | --exp_end; | |
10576 | ||
65d79d4b SDJ |
10577 | /* Checking if the expression is not constant. */ |
10578 | if (watchpoint_exp_is_const (exp)) | |
10579 | { | |
10580 | int len; | |
10581 | ||
10582 | len = exp_end - exp_start; | |
10583 | while (len > 0 && isspace (exp_start[len - 1])) | |
10584 | len--; | |
10585 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10586 | } | |
10587 | ||
c906108c SS |
10588 | exp_valid_block = innermost_block; |
10589 | mark = value_mark (); | |
a1442452 | 10590 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
10591 | |
10592 | if (just_location) | |
10593 | { | |
9c06b0b4 TJB |
10594 | int ret; |
10595 | ||
06a64a0b | 10596 | exp_valid_block = NULL; |
a1442452 | 10597 | val = value_addr (result); |
06a64a0b TT |
10598 | release_value (val); |
10599 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10600 | |
10601 | if (use_mask) | |
10602 | { | |
10603 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10604 | mask); | |
10605 | if (ret == -1) | |
10606 | error (_("This target does not support masked watchpoints.")); | |
10607 | else if (ret == -2) | |
10608 | error (_("Invalid mask or memory region.")); | |
10609 | } | |
06a64a0b TT |
10610 | } |
10611 | else if (val != NULL) | |
fa4727a6 | 10612 | release_value (val); |
c906108c | 10613 | |
e9cafbcc TT |
10614 | tok = skip_spaces (arg); |
10615 | end_tok = skip_to_space (tok); | |
c906108c SS |
10616 | |
10617 | toklen = end_tok - tok; | |
10618 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10619 | { | |
2d134ed3 PA |
10620 | struct expression *cond; |
10621 | ||
60e1c644 | 10622 | innermost_block = NULL; |
c906108c | 10623 | tok = cond_start = end_tok + 1; |
1bb9788d | 10624 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10625 | |
10626 | /* The watchpoint expression may not be local, but the condition | |
10627 | may still be. E.g.: `watch global if local > 0'. */ | |
10628 | cond_exp_valid_block = innermost_block; | |
10629 | ||
2d134ed3 | 10630 | xfree (cond); |
c906108c SS |
10631 | cond_end = tok; |
10632 | } | |
10633 | if (*tok) | |
8a3fe4f8 | 10634 | error (_("Junk at end of command.")); |
c906108c | 10635 | |
53a5351d | 10636 | if (accessflag == hw_read) |
c5aa993b | 10637 | bp_type = bp_read_watchpoint; |
53a5351d | 10638 | else if (accessflag == hw_access) |
c5aa993b JM |
10639 | bp_type = bp_access_watchpoint; |
10640 | else | |
10641 | bp_type = bp_hardware_watchpoint; | |
c906108c | 10642 | |
d983da9c | 10643 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
10644 | |
10645 | /* If the expression is "local", then set up a "watchpoint scope" | |
10646 | breakpoint at the point where we've left the scope of the watchpoint | |
10647 | expression. Create the scope breakpoint before the watchpoint, so | |
10648 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 10649 | if (exp_valid_block && frame) |
d983da9c | 10650 | { |
edb3359d DJ |
10651 | if (frame_id_p (frame_unwind_caller_id (frame))) |
10652 | { | |
10653 | scope_breakpoint | |
a6d9a66e UW |
10654 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
10655 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
10656 | bp_watchpoint_scope, |
10657 | &momentary_breakpoint_ops); | |
d983da9c | 10658 | |
edb3359d | 10659 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10660 | |
edb3359d DJ |
10661 | /* Automatically delete the breakpoint when it hits. */ |
10662 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10663 | |
edb3359d DJ |
10664 | /* Only break in the proper frame (help with recursion). */ |
10665 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 10666 | |
edb3359d | 10667 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
10668 | scope_breakpoint->loc->gdbarch |
10669 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
10670 | scope_breakpoint->loc->requested_address |
10671 | = frame_unwind_caller_pc (frame); | |
10672 | scope_breakpoint->loc->address | |
a6d9a66e UW |
10673 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10674 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10675 | scope_breakpoint->type); |
10676 | } | |
d983da9c DJ |
10677 | } |
10678 | ||
c906108c | 10679 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
10680 | |
10681 | w = XCNEW (struct watchpoint); | |
10682 | b = &w->base; | |
348d480f | 10683 | if (use_mask) |
3a5c3e22 PA |
10684 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10685 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 10686 | else |
3a5c3e22 PA |
10687 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10688 | &watchpoint_breakpoint_ops); | |
37e4754d | 10689 | b->thread = thread; |
b5de0fa7 | 10690 | b->disposition = disp_donttouch; |
348d480f | 10691 | b->pspace = current_program_space; |
3a5c3e22 PA |
10692 | w->exp = exp; |
10693 | w->exp_valid_block = exp_valid_block; | |
10694 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10695 | if (just_location) |
10696 | { | |
10697 | struct type *t = value_type (val); | |
10698 | CORE_ADDR addr = value_as_address (val); | |
10699 | char *name; | |
10700 | ||
10701 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
10702 | name = type_to_string (t); | |
10703 | ||
3a5c3e22 | 10704 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 10705 | core_addr_to_string (addr)); |
06a64a0b TT |
10706 | xfree (name); |
10707 | ||
3a5c3e22 | 10708 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
10709 | (int) (exp_end - exp_start), exp_start); |
10710 | ||
06a64a0b TT |
10711 | /* The above expression is in C. */ |
10712 | b->language = language_c; | |
10713 | } | |
10714 | else | |
3a5c3e22 | 10715 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10716 | |
10717 | if (use_mask) | |
10718 | { | |
3a5c3e22 | 10719 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10720 | } |
10721 | else | |
10722 | { | |
3a5c3e22 PA |
10723 | w->val = val; |
10724 | w->val_valid = 1; | |
9c06b0b4 | 10725 | } |
77b06cd7 | 10726 | |
c906108c SS |
10727 | if (cond_start) |
10728 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
10729 | else | |
10730 | b->cond_string = 0; | |
c5aa993b | 10731 | |
c906108c | 10732 | if (frame) |
f6bc2008 | 10733 | { |
3a5c3e22 PA |
10734 | w->watchpoint_frame = get_frame_id (frame); |
10735 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 10736 | } |
c906108c | 10737 | else |
f6bc2008 | 10738 | { |
3a5c3e22 PA |
10739 | w->watchpoint_frame = null_frame_id; |
10740 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10741 | } |
c906108c | 10742 | |
d983da9c | 10743 | if (scope_breakpoint != NULL) |
c906108c | 10744 | { |
d983da9c DJ |
10745 | /* The scope breakpoint is related to the watchpoint. We will |
10746 | need to act on them together. */ | |
10747 | b->related_breakpoint = scope_breakpoint; | |
10748 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 10749 | } |
d983da9c | 10750 | |
06a64a0b TT |
10751 | if (!just_location) |
10752 | value_free_to_mark (mark); | |
2d134ed3 | 10753 | |
a9634178 TJB |
10754 | TRY_CATCH (e, RETURN_MASK_ALL) |
10755 | { | |
10756 | /* Finally update the new watchpoint. This creates the locations | |
10757 | that should be inserted. */ | |
3a5c3e22 | 10758 | update_watchpoint (w, 1); |
a9634178 TJB |
10759 | } |
10760 | if (e.reason < 0) | |
10761 | { | |
10762 | delete_breakpoint (b); | |
10763 | throw_exception (e); | |
10764 | } | |
10765 | ||
3ea46bff | 10766 | install_breakpoint (internal, b, 1); |
c906108c SS |
10767 | } |
10768 | ||
e09342b5 | 10769 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10770 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10771 | |
c906108c | 10772 | static int |
a9634178 | 10773 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
10774 | { |
10775 | int found_memory_cnt = 0; | |
2e70b7b9 | 10776 | struct value *head = v; |
c906108c SS |
10777 | |
10778 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10779 | if (!can_use_hw_watchpoints) |
c906108c | 10780 | return 0; |
c5aa993b | 10781 | |
5c44784c JM |
10782 | /* Make sure that the value of the expression depends only upon |
10783 | memory contents, and values computed from them within GDB. If we | |
10784 | find any register references or function calls, we can't use a | |
10785 | hardware watchpoint. | |
10786 | ||
10787 | The idea here is that evaluating an expression generates a series | |
10788 | of values, one holding the value of every subexpression. (The | |
10789 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10790 | a*b+c.) GDB's values hold almost enough information to establish | |
10791 | the criteria given above --- they identify memory lvalues, | |
10792 | register lvalues, computed values, etcetera. So we can evaluate | |
10793 | the expression, and then scan the chain of values that leaves | |
10794 | behind to decide whether we can detect any possible change to the | |
10795 | expression's final value using only hardware watchpoints. | |
10796 | ||
10797 | However, I don't think that the values returned by inferior | |
10798 | function calls are special in any way. So this function may not | |
10799 | notice that an expression involving an inferior function call | |
10800 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 10801 | for (; v; v = value_next (v)) |
c906108c | 10802 | { |
5c44784c | 10803 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10804 | { |
8464be76 DJ |
10805 | if (v != head && value_lazy (v)) |
10806 | /* A lazy memory lvalue in the chain is one that GDB never | |
10807 | needed to fetch; we either just used its address (e.g., | |
10808 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10809 | in `a,b'). This doesn't apply to HEAD; if that is | |
10810 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10811 | ; |
53a5351d | 10812 | else |
5c44784c JM |
10813 | { |
10814 | /* Ahh, memory we actually used! Check if we can cover | |
10815 | it with hardware watchpoints. */ | |
df407dfe | 10816 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10817 | |
10818 | /* We only watch structs and arrays if user asked for it | |
10819 | explicitly, never if they just happen to appear in a | |
10820 | middle of some value chain. */ | |
10821 | if (v == head | |
10822 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10823 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10824 | { | |
42ae5230 | 10825 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10826 | int len; |
10827 | int num_regs; | |
10828 | ||
a9634178 | 10829 | len = (target_exact_watchpoints |
e09342b5 TJB |
10830 | && is_scalar_type_recursive (vtype))? |
10831 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10832 | |
e09342b5 TJB |
10833 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10834 | if (!num_regs) | |
2e70b7b9 MS |
10835 | return 0; |
10836 | else | |
e09342b5 | 10837 | found_memory_cnt += num_regs; |
2e70b7b9 | 10838 | } |
5c44784c | 10839 | } |
c5aa993b | 10840 | } |
5086187c AC |
10841 | else if (VALUE_LVAL (v) != not_lval |
10842 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10843 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10844 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10845 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10846 | } |
10847 | ||
10848 | /* The expression itself looks suitable for using a hardware | |
10849 | watchpoint, but give the target machine a chance to reject it. */ | |
10850 | return found_memory_cnt; | |
10851 | } | |
10852 | ||
8b93c638 | 10853 | void |
84f4c1fe | 10854 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 10855 | { |
84f4c1fe | 10856 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10857 | } |
10858 | ||
10859 | /* A helper function that looks for an argument at the start of a | |
10860 | string. The argument must also either be at the end of the string, | |
10861 | or be followed by whitespace. Returns 1 if it finds the argument, | |
10862 | 0 otherwise. If the argument is found, it updates *STR. */ | |
10863 | ||
10864 | static int | |
10865 | check_for_argument (char **str, char *arg, int arg_len) | |
10866 | { | |
10867 | if (strncmp (*str, arg, arg_len) == 0 | |
10868 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
10869 | { | |
10870 | *str += arg_len; | |
10871 | return 1; | |
10872 | } | |
10873 | return 0; | |
10874 | } | |
10875 | ||
10876 | /* A helper function that looks for the "-location" argument and then | |
10877 | calls watch_command_1. */ | |
10878 | ||
10879 | static void | |
10880 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
10881 | { | |
10882 | int just_location = 0; | |
10883 | ||
10884 | if (arg | |
10885 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10886 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
10887 | { | |
e9cafbcc | 10888 | arg = skip_spaces (arg); |
06a64a0b TT |
10889 | just_location = 1; |
10890 | } | |
10891 | ||
84f4c1fe | 10892 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10893 | } |
8926118c | 10894 | |
c5aa993b | 10895 | static void |
fba45db2 | 10896 | watch_command (char *arg, int from_tty) |
c906108c | 10897 | { |
06a64a0b | 10898 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10899 | } |
10900 | ||
8b93c638 | 10901 | void |
84f4c1fe | 10902 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 10903 | { |
84f4c1fe | 10904 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10905 | } |
8926118c | 10906 | |
c5aa993b | 10907 | static void |
fba45db2 | 10908 | rwatch_command (char *arg, int from_tty) |
c906108c | 10909 | { |
06a64a0b | 10910 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10911 | } |
10912 | ||
8b93c638 | 10913 | void |
84f4c1fe | 10914 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 10915 | { |
84f4c1fe | 10916 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10917 | } |
8926118c | 10918 | |
c5aa993b | 10919 | static void |
fba45db2 | 10920 | awatch_command (char *arg, int from_tty) |
c906108c | 10921 | { |
06a64a0b | 10922 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10923 | } |
c906108c | 10924 | \f |
c5aa993b | 10925 | |
43ff13b4 | 10926 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
10927 | because it uses the mechanisms of breakpoints. */ |
10928 | ||
bfec99b2 PA |
10929 | struct until_break_command_continuation_args |
10930 | { | |
10931 | struct breakpoint *breakpoint; | |
10932 | struct breakpoint *breakpoint2; | |
186c406b | 10933 | int thread_num; |
bfec99b2 PA |
10934 | }; |
10935 | ||
43ff13b4 | 10936 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 10937 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 10938 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 10939 | command. */ |
c2c6d25f | 10940 | static void |
fa4cd53f | 10941 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 10942 | { |
bfec99b2 PA |
10943 | struct until_break_command_continuation_args *a = arg; |
10944 | ||
10945 | delete_breakpoint (a->breakpoint); | |
10946 | if (a->breakpoint2) | |
10947 | delete_breakpoint (a->breakpoint2); | |
186c406b | 10948 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
10949 | } |
10950 | ||
c906108c | 10951 | void |
ae66c1fc | 10952 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
10953 | { |
10954 | struct symtabs_and_lines sals; | |
10955 | struct symtab_and_line sal; | |
8556afb4 PA |
10956 | struct frame_info *frame; |
10957 | struct gdbarch *frame_gdbarch; | |
10958 | struct frame_id stack_frame_id; | |
10959 | struct frame_id caller_frame_id; | |
c906108c | 10960 | struct breakpoint *breakpoint; |
f107f563 | 10961 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 10962 | struct cleanup *old_chain; |
186c406b TT |
10963 | int thread; |
10964 | struct thread_info *tp; | |
c906108c SS |
10965 | |
10966 | clear_proceed_status (); | |
10967 | ||
10968 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10969 | this function. */ |
c5aa993b | 10970 | |
1bfeeb0f | 10971 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 10972 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 10973 | get_last_displayed_symtab (), |
f8eba3c6 | 10974 | get_last_displayed_line ()); |
c906108c | 10975 | else |
f8eba3c6 TT |
10976 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
10977 | (struct symtab *) NULL, 0); | |
c5aa993b | 10978 | |
c906108c | 10979 | if (sals.nelts != 1) |
8a3fe4f8 | 10980 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10981 | |
c906108c | 10982 | sal = sals.sals[0]; |
4a64f543 | 10983 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 10984 | |
c906108c | 10985 | if (*arg) |
8a3fe4f8 | 10986 | error (_("Junk at end of arguments.")); |
c5aa993b | 10987 | |
c906108c | 10988 | resolve_sal_pc (&sal); |
c5aa993b | 10989 | |
186c406b TT |
10990 | tp = inferior_thread (); |
10991 | thread = tp->num; | |
10992 | ||
883bc8d1 PA |
10993 | old_chain = make_cleanup (null_cleanup, NULL); |
10994 | ||
8556afb4 PA |
10995 | /* Note linespec handling above invalidates the frame chain. |
10996 | Installing a breakpoint also invalidates the frame chain (as it | |
10997 | may need to switch threads), so do any frame handling before | |
10998 | that. */ | |
10999 | ||
11000 | frame = get_selected_frame (NULL); | |
11001 | frame_gdbarch = get_frame_arch (frame); | |
11002 | stack_frame_id = get_stack_frame_id (frame); | |
11003 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11004 | |
ae66c1fc EZ |
11005 | /* Keep within the current frame, or in frames called by the current |
11006 | one. */ | |
edb3359d | 11007 | |
883bc8d1 | 11008 | if (frame_id_p (caller_frame_id)) |
c906108c | 11009 | { |
883bc8d1 PA |
11010 | struct symtab_and_line sal2; |
11011 | ||
11012 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11013 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11014 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11015 | sal2, |
11016 | caller_frame_id, | |
f107f563 VP |
11017 | bp_until); |
11018 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11019 | |
883bc8d1 | 11020 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11021 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11022 | } |
c5aa993b | 11023 | |
c70a6932 JK |
11024 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11025 | frame = NULL; | |
11026 | ||
883bc8d1 PA |
11027 | if (anywhere) |
11028 | /* If the user told us to continue until a specified location, | |
11029 | we don't specify a frame at which we need to stop. */ | |
11030 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11031 | null_frame_id, bp_until); | |
11032 | else | |
11033 | /* Otherwise, specify the selected frame, because we want to stop | |
11034 | only at the very same frame. */ | |
11035 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11036 | stack_frame_id, bp_until); | |
11037 | make_cleanup_delete_breakpoint (breakpoint); | |
11038 | ||
a493e3e2 | 11039 | proceed (-1, GDB_SIGNAL_DEFAULT, 0); |
f107f563 | 11040 | |
4a64f543 MS |
11041 | /* If we are running asynchronously, and proceed call above has |
11042 | actually managed to start the target, arrange for breakpoints to | |
11043 | be deleted when the target stops. Otherwise, we're already | |
11044 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11045 | |
8ea051c5 | 11046 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11047 | { |
bfec99b2 PA |
11048 | struct until_break_command_continuation_args *args; |
11049 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11050 | |
bfec99b2 PA |
11051 | args->breakpoint = breakpoint; |
11052 | args->breakpoint2 = breakpoint2; | |
186c406b | 11053 | args->thread_num = thread; |
f107f563 VP |
11054 | |
11055 | discard_cleanups (old_chain); | |
95e54da7 PA |
11056 | add_continuation (inferior_thread (), |
11057 | until_break_command_continuation, args, | |
604ead4a | 11058 | xfree); |
f107f563 VP |
11059 | } |
11060 | else | |
c5aa993b | 11061 | do_cleanups (old_chain); |
c906108c | 11062 | } |
ae66c1fc | 11063 | |
c906108c SS |
11064 | /* This function attempts to parse an optional "if <cond>" clause |
11065 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11066 | |
c906108c SS |
11067 | Else, it returns a pointer to the condition string. (It does not |
11068 | attempt to evaluate the string against a particular block.) And, | |
11069 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11070 | if clause in the arg string. */ |
53a5351d | 11071 | |
c906108c | 11072 | static char * |
fba45db2 | 11073 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11074 | { |
c5aa993b JM |
11075 | char *cond_string; |
11076 | ||
11077 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11078 | return NULL; |
c5aa993b | 11079 | |
4a64f543 | 11080 | /* Skip the "if" keyword. */ |
c906108c | 11081 | (*arg) += 2; |
c5aa993b | 11082 | |
c906108c | 11083 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11084 | condition string. */ |
e9cafbcc | 11085 | *arg = skip_spaces (*arg); |
c906108c | 11086 | cond_string = *arg; |
c5aa993b | 11087 | |
4a64f543 MS |
11088 | /* Assume that the condition occupies the remainder of the arg |
11089 | string. */ | |
c906108c | 11090 | (*arg) += strlen (cond_string); |
c5aa993b | 11091 | |
c906108c SS |
11092 | return cond_string; |
11093 | } | |
c5aa993b | 11094 | |
c906108c SS |
11095 | /* Commands to deal with catching events, such as signals, exceptions, |
11096 | process start/exit, etc. */ | |
c5aa993b JM |
11097 | |
11098 | typedef enum | |
11099 | { | |
44feb3ce TT |
11100 | catch_fork_temporary, catch_vfork_temporary, |
11101 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11102 | } |
11103 | catch_fork_kind; | |
11104 | ||
c906108c | 11105 | static void |
cc59ec59 MS |
11106 | catch_fork_command_1 (char *arg, int from_tty, |
11107 | struct cmd_list_element *command) | |
c906108c | 11108 | { |
a6d9a66e | 11109 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11110 | char *cond_string = NULL; |
44feb3ce TT |
11111 | catch_fork_kind fork_kind; |
11112 | int tempflag; | |
11113 | ||
11114 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11115 | tempflag = (fork_kind == catch_fork_temporary | |
11116 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11117 | |
44feb3ce TT |
11118 | if (!arg) |
11119 | arg = ""; | |
e9cafbcc | 11120 | arg = skip_spaces (arg); |
c5aa993b | 11121 | |
c906108c | 11122 | /* The allowed syntax is: |
c5aa993b JM |
11123 | catch [v]fork |
11124 | catch [v]fork if <cond> | |
11125 | ||
4a64f543 | 11126 | First, check if there's an if clause. */ |
c906108c | 11127 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11128 | |
c906108c | 11129 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11130 | error (_("Junk at end of arguments.")); |
c5aa993b | 11131 | |
c906108c | 11132 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11133 | and enable reporting of such events. */ |
c5aa993b JM |
11134 | switch (fork_kind) |
11135 | { | |
44feb3ce TT |
11136 | case catch_fork_temporary: |
11137 | case catch_fork_permanent: | |
a6d9a66e | 11138 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11139 | &catch_fork_breakpoint_ops); |
c906108c | 11140 | break; |
44feb3ce TT |
11141 | case catch_vfork_temporary: |
11142 | case catch_vfork_permanent: | |
a6d9a66e | 11143 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11144 | &catch_vfork_breakpoint_ops); |
c906108c | 11145 | break; |
c5aa993b | 11146 | default: |
8a3fe4f8 | 11147 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11148 | break; |
c5aa993b | 11149 | } |
c906108c SS |
11150 | } |
11151 | ||
11152 | static void | |
cc59ec59 MS |
11153 | catch_exec_command_1 (char *arg, int from_tty, |
11154 | struct cmd_list_element *command) | |
c906108c | 11155 | { |
b4d90040 | 11156 | struct exec_catchpoint *c; |
a6d9a66e | 11157 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11158 | int tempflag; |
c5aa993b | 11159 | char *cond_string = NULL; |
c906108c | 11160 | |
44feb3ce TT |
11161 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11162 | ||
11163 | if (!arg) | |
11164 | arg = ""; | |
e9cafbcc | 11165 | arg = skip_spaces (arg); |
c906108c SS |
11166 | |
11167 | /* The allowed syntax is: | |
c5aa993b JM |
11168 | catch exec |
11169 | catch exec if <cond> | |
c906108c | 11170 | |
4a64f543 | 11171 | First, check if there's an if clause. */ |
c906108c SS |
11172 | cond_string = ep_parse_optional_if_clause (&arg); |
11173 | ||
11174 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11175 | error (_("Junk at end of arguments.")); |
c906108c | 11176 | |
b4d90040 PA |
11177 | c = XNEW (struct exec_catchpoint); |
11178 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11179 | &catch_exec_breakpoint_ops); | |
11180 | c->exec_pathname = NULL; | |
11181 | ||
3ea46bff | 11182 | install_breakpoint (0, &c->base, 1); |
c906108c | 11183 | } |
c5aa993b | 11184 | |
3086aeae | 11185 | static enum print_stop_action |
348d480f | 11186 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 11187 | { |
79a45e25 | 11188 | struct ui_out *uiout = current_uiout; |
348d480f | 11189 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 11190 | int bp_temp, bp_throw; |
3086aeae | 11191 | |
ade92717 | 11192 | annotate_catchpoint (b->number); |
3086aeae | 11193 | |
ade92717 AR |
11194 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11195 | if (b->loc->address != b->loc->requested_address) | |
11196 | breakpoint_adjustment_warning (b->loc->requested_address, | |
11197 | b->loc->address, | |
11198 | b->number, 1); | |
df2b6d2d | 11199 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11200 | ui_out_text (uiout, |
11201 | bp_temp ? "Temporary catchpoint " | |
11202 | : "Catchpoint "); | |
11203 | if (!ui_out_is_mi_like_p (uiout)) | |
11204 | ui_out_field_int (uiout, "bkptno", b->number); | |
11205 | ui_out_text (uiout, | |
c0b37c48 AR |
11206 | bp_throw ? " (exception thrown), " |
11207 | : " (exception caught), "); | |
ade92717 AR |
11208 | if (ui_out_is_mi_like_p (uiout)) |
11209 | { | |
11210 | ui_out_field_string (uiout, "reason", | |
11211 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11212 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
11213 | ui_out_field_int (uiout, "bkptno", b->number); | |
11214 | } | |
3086aeae DJ |
11215 | return PRINT_SRC_AND_LOC; |
11216 | } | |
11217 | ||
11218 | static void | |
cc59ec59 MS |
11219 | print_one_exception_catchpoint (struct breakpoint *b, |
11220 | struct bp_location **last_loc) | |
3086aeae | 11221 | { |
79a45b7d | 11222 | struct value_print_options opts; |
79a45e25 | 11223 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 11224 | |
79a45b7d TT |
11225 | get_user_print_options (&opts); |
11226 | if (opts.addressprint) | |
3086aeae DJ |
11227 | { |
11228 | annotate_field (4); | |
604133b5 AR |
11229 | if (b->loc == NULL || b->loc->shlib_disabled) |
11230 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
11231 | else | |
5af949e3 UW |
11232 | ui_out_field_core_addr (uiout, "addr", |
11233 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
11234 | } |
11235 | annotate_field (5); | |
604133b5 | 11236 | if (b->loc) |
a6d9a66e | 11237 | *last_loc = b->loc; |
3086aeae DJ |
11238 | if (strstr (b->addr_string, "throw") != NULL) |
11239 | ui_out_field_string (uiout, "what", "exception throw"); | |
11240 | else | |
11241 | ui_out_field_string (uiout, "what", "exception catch"); | |
11242 | } | |
11243 | ||
11244 | static void | |
11245 | print_mention_exception_catchpoint (struct breakpoint *b) | |
11246 | { | |
79a45e25 | 11247 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
11248 | int bp_temp; |
11249 | int bp_throw; | |
11250 | ||
df2b6d2d | 11251 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11252 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11253 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
11254 | : _("Catchpoint ")); | |
11255 | ui_out_field_int (uiout, "bkptno", b->number); | |
11256 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
11257 | : _(" (catch)")); | |
3086aeae DJ |
11258 | } |
11259 | ||
6149aea9 PA |
11260 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
11261 | catch catchpoints. */ | |
11262 | ||
11263 | static void | |
4a64f543 MS |
11264 | print_recreate_exception_catchpoint (struct breakpoint *b, |
11265 | struct ui_file *fp) | |
6149aea9 PA |
11266 | { |
11267 | int bp_temp; | |
11268 | int bp_throw; | |
11269 | ||
11270 | bp_temp = b->disposition == disp_del; | |
11271 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
11272 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
11273 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 11274 | print_recreate_thread (b, fp); |
6149aea9 PA |
11275 | } |
11276 | ||
2060206e | 11277 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
11278 | |
11279 | static int | |
11280 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
11281 | enum exception_event_kind ex_event, int from_tty) | |
11282 | { | |
604133b5 AR |
11283 | char *trigger_func_name; |
11284 | ||
3086aeae | 11285 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 11286 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 11287 | else |
604133b5 | 11288 | trigger_func_name = "__cxa_throw"; |
3086aeae | 11289 | |
8cdf0e15 | 11290 | create_breakpoint (get_current_arch (), |
e7e0cddf | 11291 | trigger_func_name, cond_string, -1, NULL, |
8cdf0e15 | 11292 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 11293 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
11294 | 0, |
11295 | AUTO_BOOLEAN_TRUE /* pending */, | |
11296 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe | 11297 | 1 /* enabled */, |
44f238bb PA |
11298 | 0 /* internal */, |
11299 | 0); | |
3086aeae | 11300 | |
3086aeae DJ |
11301 | return 1; |
11302 | } | |
11303 | ||
4a64f543 | 11304 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
11305 | |
11306 | static void | |
fba45db2 KB |
11307 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
11308 | int tempflag, int from_tty) | |
c906108c | 11309 | { |
c5aa993b | 11310 | char *cond_string = NULL; |
c5aa993b | 11311 | |
44feb3ce TT |
11312 | if (!arg) |
11313 | arg = ""; | |
e9cafbcc | 11314 | arg = skip_spaces (arg); |
c5aa993b | 11315 | |
c906108c SS |
11316 | cond_string = ep_parse_optional_if_clause (&arg); |
11317 | ||
11318 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11319 | error (_("Junk at end of arguments.")); |
c906108c | 11320 | |
059fb39f PM |
11321 | if (ex_event != EX_EVENT_THROW |
11322 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 11323 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 11324 | |
3086aeae DJ |
11325 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
11326 | return; | |
11327 | ||
8a3fe4f8 | 11328 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
11329 | } |
11330 | ||
44feb3ce TT |
11331 | /* Implementation of "catch catch" command. */ |
11332 | ||
11333 | static void | |
11334 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11335 | { | |
11336 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11337 | |
44feb3ce TT |
11338 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
11339 | } | |
11340 | ||
11341 | /* Implementation of "catch throw" command. */ | |
11342 | ||
11343 | static void | |
11344 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11345 | { | |
11346 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11347 | |
44feb3ce TT |
11348 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
11349 | } | |
11350 | ||
9ac4176b | 11351 | void |
28010a5d PA |
11352 | init_ada_exception_breakpoint (struct breakpoint *b, |
11353 | struct gdbarch *gdbarch, | |
11354 | struct symtab_and_line sal, | |
11355 | char *addr_string, | |
c0a91b2b | 11356 | const struct breakpoint_ops *ops, |
28010a5d PA |
11357 | int tempflag, |
11358 | int from_tty) | |
f7f9143b | 11359 | { |
f7f9143b JB |
11360 | if (from_tty) |
11361 | { | |
5af949e3 UW |
11362 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11363 | if (!loc_gdbarch) | |
11364 | loc_gdbarch = gdbarch; | |
11365 | ||
6c95b8df PA |
11366 | describe_other_breakpoints (loc_gdbarch, |
11367 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11368 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11369 | version for exception catchpoints, because two catchpoints | |
11370 | used for different exception names will use the same address. | |
11371 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11372 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11373 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11374 | the user what type of catchpoint it is. The above is good |
11375 | enough for now, though. */ | |
11376 | } | |
11377 | ||
28010a5d | 11378 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
11379 | |
11380 | b->enable_state = bp_enabled; | |
11381 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
11382 | b->addr_string = addr_string; |
11383 | b->language = language_ada; | |
f7f9143b JB |
11384 | } |
11385 | ||
a96d9b2e SDJ |
11386 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
11387 | filter list, or NULL if no filtering is required. */ | |
11388 | static VEC(int) * | |
11389 | catch_syscall_split_args (char *arg) | |
11390 | { | |
11391 | VEC(int) *result = NULL; | |
29d0bb3d | 11392 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
11393 | |
11394 | while (*arg != '\0') | |
11395 | { | |
11396 | int i, syscall_number; | |
11397 | char *endptr; | |
11398 | char cur_name[128]; | |
11399 | struct syscall s; | |
11400 | ||
11401 | /* Skip whitespace. */ | |
11402 | while (isspace (*arg)) | |
11403 | arg++; | |
11404 | ||
11405 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
11406 | cur_name[i] = arg[i]; | |
11407 | cur_name[i] = '\0'; | |
11408 | arg += i; | |
11409 | ||
11410 | /* Check if the user provided a syscall name or a number. */ | |
11411 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
11412 | if (*endptr == '\0') | |
bccd0dd2 | 11413 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
11414 | else |
11415 | { | |
11416 | /* We have a name. Let's check if it's valid and convert it | |
11417 | to a number. */ | |
11418 | get_syscall_by_name (cur_name, &s); | |
11419 | ||
11420 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
11421 | /* Here we have to issue an error instead of a warning, |
11422 | because GDB cannot do anything useful if there's no | |
11423 | syscall number to be caught. */ | |
a96d9b2e SDJ |
11424 | error (_("Unknown syscall name '%s'."), cur_name); |
11425 | } | |
11426 | ||
11427 | /* Ok, it's valid. */ | |
11428 | VEC_safe_push (int, result, s.number); | |
11429 | } | |
11430 | ||
11431 | discard_cleanups (cleanup); | |
11432 | return result; | |
11433 | } | |
11434 | ||
11435 | /* Implement the "catch syscall" command. */ | |
11436 | ||
11437 | static void | |
cc59ec59 MS |
11438 | catch_syscall_command_1 (char *arg, int from_tty, |
11439 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
11440 | { |
11441 | int tempflag; | |
11442 | VEC(int) *filter; | |
11443 | struct syscall s; | |
11444 | struct gdbarch *gdbarch = get_current_arch (); | |
11445 | ||
11446 | /* Checking if the feature if supported. */ | |
11447 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
11448 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 11449 | this architecture yet.")); |
a96d9b2e SDJ |
11450 | |
11451 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
11452 | ||
e9cafbcc | 11453 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11454 | |
11455 | /* We need to do this first "dummy" translation in order | |
11456 | to get the syscall XML file loaded or, most important, | |
11457 | to display a warning to the user if there's no XML file | |
11458 | for his/her architecture. */ | |
11459 | get_syscall_by_number (0, &s); | |
11460 | ||
11461 | /* The allowed syntax is: | |
11462 | catch syscall | |
11463 | catch syscall <name | number> [<name | number> ... <name | number>] | |
11464 | ||
11465 | Let's check if there's a syscall name. */ | |
11466 | ||
11467 | if (arg != NULL) | |
11468 | filter = catch_syscall_split_args (arg); | |
11469 | else | |
11470 | filter = NULL; | |
11471 | ||
11472 | create_syscall_event_catchpoint (tempflag, filter, | |
11473 | &catch_syscall_breakpoint_ops); | |
11474 | } | |
11475 | ||
c906108c | 11476 | static void |
fba45db2 | 11477 | catch_command (char *arg, int from_tty) |
c906108c | 11478 | { |
44feb3ce | 11479 | error (_("Catch requires an event name.")); |
c906108c SS |
11480 | } |
11481 | \f | |
11482 | ||
11483 | static void | |
fba45db2 | 11484 | tcatch_command (char *arg, int from_tty) |
c906108c | 11485 | { |
44feb3ce | 11486 | error (_("Catch requires an event name.")); |
c906108c SS |
11487 | } |
11488 | ||
8a2c437b TT |
11489 | /* A qsort comparison function that sorts breakpoints in order. */ |
11490 | ||
11491 | static int | |
11492 | compare_breakpoints (const void *a, const void *b) | |
11493 | { | |
11494 | const breakpoint_p *ba = a; | |
11495 | uintptr_t ua = (uintptr_t) *ba; | |
11496 | const breakpoint_p *bb = b; | |
11497 | uintptr_t ub = (uintptr_t) *bb; | |
11498 | ||
11499 | if ((*ba)->number < (*bb)->number) | |
11500 | return -1; | |
11501 | else if ((*ba)->number > (*bb)->number) | |
11502 | return 1; | |
11503 | ||
11504 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11505 | the number 0. */ | |
11506 | if (ua < ub) | |
11507 | return -1; | |
11508 | return ub > ub ? 1 : 0; | |
11509 | } | |
11510 | ||
80f8a6eb | 11511 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11512 | |
11513 | static void | |
fba45db2 | 11514 | clear_command (char *arg, int from_tty) |
c906108c | 11515 | { |
8a2c437b | 11516 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11517 | VEC(breakpoint_p) *found = 0; |
11518 | int ix; | |
c906108c SS |
11519 | int default_match; |
11520 | struct symtabs_and_lines sals; | |
11521 | struct symtab_and_line sal; | |
c906108c | 11522 | int i; |
8a2c437b | 11523 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11524 | |
11525 | if (arg) | |
11526 | { | |
39cf75f7 DE |
11527 | sals = decode_line_with_current_source (arg, |
11528 | (DECODE_LINE_FUNFIRSTLINE | |
11529 | | DECODE_LINE_LIST_MODE)); | |
c906108c SS |
11530 | default_match = 0; |
11531 | } | |
11532 | else | |
11533 | { | |
c5aa993b | 11534 | sals.sals = (struct symtab_and_line *) |
c906108c | 11535 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11536 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11537 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11538 | |
11539 | /* Set sal's line, symtab, pc, and pspace to the values | |
11540 | corresponding to the last call to print_frame_info. If the | |
11541 | codepoint is not valid, this will set all the fields to 0. */ | |
11542 | get_last_displayed_sal (&sal); | |
c906108c | 11543 | if (sal.symtab == 0) |
8a3fe4f8 | 11544 | error (_("No source file specified.")); |
c906108c SS |
11545 | |
11546 | sals.sals[0] = sal; | |
11547 | sals.nelts = 1; | |
11548 | ||
11549 | default_match = 1; | |
11550 | } | |
11551 | ||
4a64f543 MS |
11552 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11553 | seems, because all existing breakpoints typically have both | |
11554 | file/line and pc set. So, if clear is given file/line, we can | |
11555 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11556 | |
11557 | We only support clearing given the address explicitly | |
11558 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11559 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11560 | due to optimization, all in one block. |
4a64f543 MS |
11561 | |
11562 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11563 | PC corresponding to the same file:line, the breakpoint won't |
11564 | be cleared. We probably can still clear the breakpoint, but | |
11565 | since the other PC value is never presented to user, user | |
11566 | can only find it by guessing, and it does not seem important | |
11567 | to support that. */ | |
11568 | ||
4a64f543 MS |
11569 | /* For each line spec given, delete bps which correspond to it. Do |
11570 | it in two passes, solely to preserve the current behavior that | |
11571 | from_tty is forced true if we delete more than one | |
11572 | breakpoint. */ | |
c906108c | 11573 | |
80f8a6eb | 11574 | found = NULL; |
8a2c437b | 11575 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11576 | for (i = 0; i < sals.nelts; i++) |
11577 | { | |
4aac40c8 TT |
11578 | int is_abs, sal_name_len; |
11579 | ||
c906108c | 11580 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11581 | If line given (pc == 0), clear all bpts on specified line. |
11582 | If defaulting, clear all bpts on default line | |
c906108c | 11583 | or at default pc. |
c5aa993b JM |
11584 | |
11585 | defaulting sal.pc != 0 tests to do | |
11586 | ||
11587 | 0 1 pc | |
11588 | 1 1 pc _and_ line | |
11589 | 0 0 line | |
11590 | 1 0 <can't happen> */ | |
c906108c SS |
11591 | |
11592 | sal = sals.sals[i]; | |
4aac40c8 TT |
11593 | is_abs = sal.symtab == NULL ? 1 : IS_ABSOLUTE_PATH (sal.symtab->filename); |
11594 | sal_name_len = is_abs ? 0 : strlen (sal.symtab->filename); | |
c906108c | 11595 | |
4a64f543 | 11596 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11597 | ALL_BREAKPOINTS (b) |
c5aa993b | 11598 | { |
0d381245 | 11599 | int match = 0; |
4a64f543 | 11600 | /* Are we going to delete b? */ |
cc60f2e3 | 11601 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11602 | { |
11603 | struct bp_location *loc = b->loc; | |
11604 | for (; loc; loc = loc->next) | |
11605 | { | |
f8eba3c6 TT |
11606 | /* If the user specified file:line, don't allow a PC |
11607 | match. This matches historical gdb behavior. */ | |
11608 | int pc_match = (!sal.explicit_line | |
11609 | && sal.pc | |
11610 | && (loc->pspace == sal.pspace) | |
11611 | && (loc->address == sal.pc) | |
11612 | && (!section_is_overlay (loc->section) | |
11613 | || loc->section == sal.section)); | |
4aac40c8 TT |
11614 | int line_match = 0; |
11615 | ||
11616 | if ((default_match || sal.explicit_line) | |
11617 | && loc->source_file != NULL | |
11618 | && sal.symtab != NULL | |
11619 | && sal.pspace == loc->pspace | |
11620 | && loc->line_number == sal.line) | |
11621 | { | |
11622 | if (filename_cmp (loc->source_file, | |
11623 | sal.symtab->filename) == 0) | |
11624 | line_match = 1; | |
11625 | else if (!IS_ABSOLUTE_PATH (sal.symtab->filename) | |
11626 | && compare_filenames_for_search (loc->source_file, | |
11627 | sal.symtab->filename, | |
11628 | sal_name_len)) | |
11629 | line_match = 1; | |
11630 | } | |
11631 | ||
0d381245 VP |
11632 | if (pc_match || line_match) |
11633 | { | |
11634 | match = 1; | |
11635 | break; | |
11636 | } | |
11637 | } | |
11638 | } | |
11639 | ||
11640 | if (match) | |
d6e956e5 | 11641 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11642 | } |
80f8a6eb | 11643 | } |
8a2c437b | 11644 | |
80f8a6eb | 11645 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11646 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11647 | { |
11648 | if (arg) | |
8a3fe4f8 | 11649 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11650 | else |
8a3fe4f8 | 11651 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11652 | } |
c906108c | 11653 | |
8a2c437b TT |
11654 | /* Remove duplicates from the vec. */ |
11655 | qsort (VEC_address (breakpoint_p, found), | |
11656 | VEC_length (breakpoint_p, found), | |
11657 | sizeof (breakpoint_p), | |
11658 | compare_breakpoints); | |
11659 | prev = VEC_index (breakpoint_p, found, 0); | |
11660 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11661 | { | |
11662 | if (b == prev) | |
11663 | { | |
11664 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11665 | --ix; | |
11666 | } | |
11667 | } | |
11668 | ||
d6e956e5 | 11669 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11670 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11671 | if (from_tty) |
a3f17187 | 11672 | { |
d6e956e5 | 11673 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11674 | printf_unfiltered (_("Deleted breakpoint ")); |
11675 | else | |
11676 | printf_unfiltered (_("Deleted breakpoints ")); | |
11677 | } | |
80f8a6eb | 11678 | breakpoints_changed (); |
d6e956e5 VP |
11679 | |
11680 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11681 | { |
c5aa993b | 11682 | if (from_tty) |
d6e956e5 VP |
11683 | printf_unfiltered ("%d ", b->number); |
11684 | delete_breakpoint (b); | |
c906108c | 11685 | } |
80f8a6eb MS |
11686 | if (from_tty) |
11687 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11688 | |
11689 | do_cleanups (cleanups); | |
c906108c SS |
11690 | } |
11691 | \f | |
11692 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11693 | all breakpoints that are marked for deletion, whether hit or not. | |
11694 | This is called after any breakpoint is hit, or after errors. */ | |
11695 | ||
11696 | void | |
fba45db2 | 11697 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11698 | { |
35df4500 | 11699 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11700 | |
11701 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11702 | if (bs->breakpoint_at |
11703 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11704 | && bs->stop) |
f431efe5 | 11705 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11706 | |
35df4500 | 11707 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11708 | { |
b5de0fa7 | 11709 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11710 | delete_breakpoint (b); |
11711 | } | |
c906108c SS |
11712 | } |
11713 | ||
4a64f543 MS |
11714 | /* A comparison function for bp_location AP and BP being interfaced to |
11715 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11716 | does breakpoint_address_is_meaningful say for its OWNER), | |
11717 | secondarily by ordering first bp_permanent OWNERed elements and | |
11718 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 11719 | qsort being an unstable algorithm. */ |
876fa593 JK |
11720 | |
11721 | static int | |
494cfb0f | 11722 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 11723 | { |
494cfb0f JK |
11724 | struct bp_location *a = *(void **) ap; |
11725 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 11726 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
11727 | int a_perm = a->owner->enable_state == bp_permanent; |
11728 | int b_perm = b->owner->enable_state == bp_permanent; | |
11729 | ||
11730 | if (a->address != b->address) | |
11731 | return (a->address > b->address) - (a->address < b->address); | |
11732 | ||
dea2aa5f LM |
11733 | /* Sort locations at the same address by their pspace number, keeping |
11734 | locations of the same inferior (in a multi-inferior environment) | |
11735 | grouped. */ | |
11736 | ||
11737 | if (a->pspace->num != b->pspace->num) | |
11738 | return ((a->pspace->num > b->pspace->num) | |
11739 | - (a->pspace->num < b->pspace->num)); | |
11740 | ||
876fa593 JK |
11741 | /* Sort permanent breakpoints first. */ |
11742 | if (a_perm != b_perm) | |
11743 | return (a_perm < b_perm) - (a_perm > b_perm); | |
11744 | ||
c56a97f9 JK |
11745 | /* Make the internal GDB representation stable across GDB runs |
11746 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11747 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11748 | |
11749 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11750 | return ((a->owner->number > b->owner->number) |
11751 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11752 | |
11753 | return (a > b) - (a < b); | |
11754 | } | |
11755 | ||
876fa593 | 11756 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
11757 | bp_location_shadow_len_after_address_max according to the current |
11758 | content of the bp_location array. */ | |
f7545552 TT |
11759 | |
11760 | static void | |
876fa593 | 11761 | bp_location_target_extensions_update (void) |
f7545552 | 11762 | { |
876fa593 JK |
11763 | struct bp_location *bl, **blp_tmp; |
11764 | ||
11765 | bp_location_placed_address_before_address_max = 0; | |
11766 | bp_location_shadow_len_after_address_max = 0; | |
11767 | ||
11768 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11769 | { | |
11770 | CORE_ADDR start, end, addr; | |
11771 | ||
11772 | if (!bp_location_has_shadow (bl)) | |
11773 | continue; | |
11774 | ||
11775 | start = bl->target_info.placed_address; | |
11776 | end = start + bl->target_info.shadow_len; | |
11777 | ||
11778 | gdb_assert (bl->address >= start); | |
11779 | addr = bl->address - start; | |
11780 | if (addr > bp_location_placed_address_before_address_max) | |
11781 | bp_location_placed_address_before_address_max = addr; | |
11782 | ||
11783 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11784 | ||
11785 | gdb_assert (bl->address < end); | |
11786 | addr = end - bl->address; | |
11787 | if (addr > bp_location_shadow_len_after_address_max) | |
11788 | bp_location_shadow_len_after_address_max = addr; | |
11789 | } | |
f7545552 TT |
11790 | } |
11791 | ||
1e4d1764 YQ |
11792 | /* Download tracepoint locations if they haven't been. */ |
11793 | ||
11794 | static void | |
11795 | download_tracepoint_locations (void) | |
11796 | { | |
11797 | struct bp_location *bl, **blp_tmp; | |
11798 | struct cleanup *old_chain; | |
11799 | ||
11800 | if (!target_can_download_tracepoint ()) | |
11801 | return; | |
11802 | ||
11803 | old_chain = save_current_space_and_thread (); | |
11804 | ||
11805 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11806 | { | |
11807 | struct tracepoint *t; | |
11808 | ||
11809 | if (!is_tracepoint (bl->owner)) | |
11810 | continue; | |
11811 | ||
11812 | if ((bl->owner->type == bp_fast_tracepoint | |
11813 | ? !may_insert_fast_tracepoints | |
11814 | : !may_insert_tracepoints)) | |
11815 | continue; | |
11816 | ||
11817 | /* In tracepoint, locations are _never_ duplicated, so | |
11818 | should_be_inserted is equivalent to | |
11819 | unduplicated_should_be_inserted. */ | |
11820 | if (!should_be_inserted (bl) || bl->inserted) | |
11821 | continue; | |
11822 | ||
11823 | switch_to_program_space_and_thread (bl->pspace); | |
11824 | ||
11825 | target_download_tracepoint (bl); | |
11826 | ||
11827 | bl->inserted = 1; | |
11828 | t = (struct tracepoint *) bl->owner; | |
11829 | t->number_on_target = bl->owner->number; | |
11830 | } | |
11831 | ||
11832 | do_cleanups (old_chain); | |
11833 | } | |
11834 | ||
934709f0 PW |
11835 | /* Swap the insertion/duplication state between two locations. */ |
11836 | ||
11837 | static void | |
11838 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11839 | { | |
11840 | const int left_inserted = left->inserted; | |
11841 | const int left_duplicate = left->duplicate; | |
b775012e | 11842 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11843 | const struct bp_target_info left_target_info = left->target_info; |
11844 | ||
1e4d1764 YQ |
11845 | /* Locations of tracepoints can never be duplicated. */ |
11846 | if (is_tracepoint (left->owner)) | |
11847 | gdb_assert (!left->duplicate); | |
11848 | if (is_tracepoint (right->owner)) | |
11849 | gdb_assert (!right->duplicate); | |
11850 | ||
934709f0 PW |
11851 | left->inserted = right->inserted; |
11852 | left->duplicate = right->duplicate; | |
b775012e | 11853 | left->needs_update = right->needs_update; |
934709f0 PW |
11854 | left->target_info = right->target_info; |
11855 | right->inserted = left_inserted; | |
11856 | right->duplicate = left_duplicate; | |
b775012e | 11857 | right->needs_update = left_needs_update; |
934709f0 PW |
11858 | right->target_info = left_target_info; |
11859 | } | |
11860 | ||
b775012e LM |
11861 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11862 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11863 | conditions on the target's side. Such conditions need to be updated on | |
11864 | the target. */ | |
11865 | ||
11866 | static void | |
11867 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11868 | { | |
11869 | struct bp_location **locp = NULL, **loc2p; | |
11870 | struct bp_location *loc; | |
11871 | CORE_ADDR address = 0; | |
11872 | int pspace_num; | |
11873 | ||
11874 | address = bl->address; | |
11875 | pspace_num = bl->pspace->num; | |
11876 | ||
11877 | /* This is only meaningful if the target is | |
11878 | evaluating conditions and if the user has | |
11879 | opted for condition evaluation on the target's | |
11880 | side. */ | |
11881 | if (gdb_evaluates_breakpoint_condition_p () | |
11882 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11883 | return; | |
11884 | ||
11885 | /* Flag all breakpoint locations with this address and | |
11886 | the same program space as the location | |
11887 | as "its condition has changed". We need to | |
11888 | update the conditions on the target's side. */ | |
11889 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11890 | { | |
11891 | loc = *loc2p; | |
11892 | ||
11893 | if (!is_breakpoint (loc->owner) | |
11894 | || pspace_num != loc->pspace->num) | |
11895 | continue; | |
11896 | ||
11897 | /* Flag the location appropriately. We use a different state to | |
11898 | let everyone know that we already updated the set of locations | |
11899 | with addr bl->address and program space bl->pspace. This is so | |
11900 | we don't have to keep calling these functions just to mark locations | |
11901 | that have already been marked. */ | |
11902 | loc->condition_changed = condition_updated; | |
11903 | ||
11904 | /* Free the agent expression bytecode as well. We will compute | |
11905 | it later on. */ | |
11906 | if (loc->cond_bytecode) | |
11907 | { | |
11908 | free_agent_expr (loc->cond_bytecode); | |
11909 | loc->cond_bytecode = NULL; | |
11910 | } | |
11911 | } | |
11912 | } | |
11913 | ||
4cd9bd08 | 11914 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
11915 | into the inferior, only remove already-inserted locations that no |
11916 | longer should be inserted. Functions that delete a breakpoint or | |
11917 | breakpoints should pass false, so that deleting a breakpoint | |
11918 | doesn't have the side effect of inserting the locations of other | |
11919 | breakpoints that are marked not-inserted, but should_be_inserted | |
11920 | returns true on them. | |
11921 | ||
11922 | This behaviour is useful is situations close to tear-down -- e.g., | |
11923 | after an exec, while the target still has execution, but breakpoint | |
11924 | shadows of the previous executable image should *NOT* be restored | |
11925 | to the new image; or before detaching, where the target still has | |
11926 | execution and wants to delete breakpoints from GDB's lists, and all | |
11927 | breakpoints had already been removed from the inferior. */ | |
11928 | ||
0d381245 | 11929 | static void |
b60e7edf | 11930 | update_global_location_list (int should_insert) |
0d381245 | 11931 | { |
74960c60 | 11932 | struct breakpoint *b; |
876fa593 | 11933 | struct bp_location **locp, *loc; |
f7545552 | 11934 | struct cleanup *cleanups; |
b775012e LM |
11935 | /* Last breakpoint location address that was marked for update. */ |
11936 | CORE_ADDR last_addr = 0; | |
11937 | /* Last breakpoint location program space that was marked for update. */ | |
11938 | int last_pspace_num = -1; | |
f7545552 | 11939 | |
2d134ed3 PA |
11940 | /* Used in the duplicates detection below. When iterating over all |
11941 | bp_locations, points to the first bp_location of a given address. | |
11942 | Breakpoints and watchpoints of different types are never | |
11943 | duplicates of each other. Keep one pointer for each type of | |
11944 | breakpoint/watchpoint, so we only need to loop over all locations | |
11945 | once. */ | |
11946 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11947 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11948 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11949 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11950 | |
4a64f543 MS |
11951 | /* Saved former bp_location array which we compare against the newly |
11952 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
11953 | struct bp_location **old_location, **old_locp; |
11954 | unsigned old_location_count; | |
11955 | ||
11956 | old_location = bp_location; | |
11957 | old_location_count = bp_location_count; | |
11958 | bp_location = NULL; | |
11959 | bp_location_count = 0; | |
11960 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 11961 | |
74960c60 | 11962 | ALL_BREAKPOINTS (b) |
876fa593 JK |
11963 | for (loc = b->loc; loc; loc = loc->next) |
11964 | bp_location_count++; | |
11965 | ||
11966 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
11967 | locp = bp_location; | |
11968 | ALL_BREAKPOINTS (b) | |
11969 | for (loc = b->loc; loc; loc = loc->next) | |
11970 | *locp++ = loc; | |
11971 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 11972 | bp_location_compare); |
876fa593 JK |
11973 | |
11974 | bp_location_target_extensions_update (); | |
74960c60 | 11975 | |
4a64f543 MS |
11976 | /* Identify bp_location instances that are no longer present in the |
11977 | new list, and therefore should be freed. Note that it's not | |
11978 | necessary that those locations should be removed from inferior -- | |
11979 | if there's another location at the same address (previously | |
11980 | marked as duplicate), we don't need to remove/insert the | |
11981 | location. | |
876fa593 | 11982 | |
4a64f543 MS |
11983 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11984 | and former bp_location array state respectively. */ | |
876fa593 JK |
11985 | |
11986 | locp = bp_location; | |
11987 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
11988 | old_locp++) | |
74960c60 | 11989 | { |
876fa593 | 11990 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11991 | struct bp_location **loc2p; |
876fa593 | 11992 | |
e5dd4106 | 11993 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11994 | not, we have to free it. */ |
c7d46a38 | 11995 | int found_object = 0; |
20874c92 VP |
11996 | /* Tells if the location should remain inserted in the target. */ |
11997 | int keep_in_target = 0; | |
11998 | int removed = 0; | |
876fa593 | 11999 | |
4a64f543 MS |
12000 | /* Skip LOCP entries which will definitely never be needed. |
12001 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12002 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12003 | && (*locp)->address < old_loc->address) |
876fa593 | 12004 | locp++; |
c7d46a38 PA |
12005 | |
12006 | for (loc2p = locp; | |
12007 | (loc2p < bp_location + bp_location_count | |
12008 | && (*loc2p)->address == old_loc->address); | |
12009 | loc2p++) | |
12010 | { | |
b775012e LM |
12011 | /* Check if this is a new/duplicated location or a duplicated |
12012 | location that had its condition modified. If so, we want to send | |
12013 | its condition to the target if evaluation of conditions is taking | |
12014 | place there. */ | |
12015 | if ((*loc2p)->condition_changed == condition_modified | |
12016 | && (last_addr != old_loc->address | |
12017 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12018 | { |
b775012e LM |
12019 | force_breakpoint_reinsertion (*loc2p); |
12020 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12021 | } |
b775012e LM |
12022 | |
12023 | if (*loc2p == old_loc) | |
12024 | found_object = 1; | |
c7d46a38 | 12025 | } |
74960c60 | 12026 | |
b775012e LM |
12027 | /* We have already handled this address, update it so that we don't |
12028 | have to go through updates again. */ | |
12029 | last_addr = old_loc->address; | |
12030 | ||
12031 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12032 | if (!found_object) | |
12033 | force_breakpoint_reinsertion (old_loc); | |
12034 | ||
4a64f543 MS |
12035 | /* If this location is no longer present, and inserted, look if |
12036 | there's maybe a new location at the same address. If so, | |
12037 | mark that one inserted, and don't remove this one. This is | |
12038 | needed so that we don't have a time window where a breakpoint | |
12039 | at certain location is not inserted. */ | |
74960c60 | 12040 | |
876fa593 | 12041 | if (old_loc->inserted) |
0d381245 | 12042 | { |
4a64f543 MS |
12043 | /* If the location is inserted now, we might have to remove |
12044 | it. */ | |
74960c60 | 12045 | |
876fa593 | 12046 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12047 | { |
4a64f543 MS |
12048 | /* The location is still present in the location list, |
12049 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12050 | keep_in_target = 1; |
74960c60 VP |
12051 | } |
12052 | else | |
12053 | { | |
b775012e LM |
12054 | /* This location still exists, but it won't be kept in the |
12055 | target since it may have been disabled. We proceed to | |
12056 | remove its target-side condition. */ | |
12057 | ||
4a64f543 MS |
12058 | /* The location is either no longer present, or got |
12059 | disabled. See if there's another location at the | |
12060 | same address, in which case we don't need to remove | |
12061 | this one from the target. */ | |
876fa593 | 12062 | |
2bdf28a0 | 12063 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12064 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12065 | { | |
876fa593 | 12066 | for (loc2p = locp; |
c7d46a38 PA |
12067 | (loc2p < bp_location + bp_location_count |
12068 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12069 | loc2p++) |
12070 | { | |
12071 | struct bp_location *loc2 = *loc2p; | |
12072 | ||
2d134ed3 | 12073 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12074 | { |
85d721b8 PA |
12075 | /* Read watchpoint locations are switched to |
12076 | access watchpoints, if the former are not | |
12077 | supported, but the latter are. */ | |
12078 | if (is_hardware_watchpoint (old_loc->owner)) | |
12079 | { | |
12080 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12081 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12082 | } | |
12083 | ||
934709f0 PW |
12084 | /* loc2 is a duplicated location. We need to check |
12085 | if it should be inserted in case it will be | |
12086 | unduplicated. */ | |
12087 | if (loc2 != old_loc | |
12088 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12089 | { |
934709f0 | 12090 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12091 | keep_in_target = 1; |
12092 | break; | |
12093 | } | |
876fa593 JK |
12094 | } |
12095 | } | |
12096 | } | |
74960c60 VP |
12097 | } |
12098 | ||
20874c92 VP |
12099 | if (!keep_in_target) |
12100 | { | |
876fa593 | 12101 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12102 | { |
4a64f543 MS |
12103 | /* This is just about all we can do. We could keep |
12104 | this location on the global list, and try to | |
12105 | remove it next time, but there's no particular | |
12106 | reason why we will succeed next time. | |
20874c92 | 12107 | |
4a64f543 MS |
12108 | Note that at this point, old_loc->owner is still |
12109 | valid, as delete_breakpoint frees the breakpoint | |
12110 | only after calling us. */ | |
3e43a32a MS |
12111 | printf_filtered (_("warning: Error removing " |
12112 | "breakpoint %d\n"), | |
876fa593 | 12113 | old_loc->owner->number); |
20874c92 VP |
12114 | } |
12115 | removed = 1; | |
12116 | } | |
0d381245 | 12117 | } |
74960c60 VP |
12118 | |
12119 | if (!found_object) | |
1c5cfe86 | 12120 | { |
db82e815 PA |
12121 | if (removed && non_stop |
12122 | && breakpoint_address_is_meaningful (old_loc->owner) | |
12123 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 12124 | { |
db82e815 PA |
12125 | /* This location was removed from the target. In |
12126 | non-stop mode, a race condition is possible where | |
12127 | we've removed a breakpoint, but stop events for that | |
12128 | breakpoint are already queued and will arrive later. | |
12129 | We apply an heuristic to be able to distinguish such | |
12130 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12131 | breakpoint location for a bit, and will retire it | |
12132 | after we see some number of events. The theory here | |
12133 | is that reporting of events should, "on the average", | |
12134 | be fair, so after a while we'll see events from all | |
12135 | threads that have anything of interest, and no longer | |
12136 | need to keep this breakpoint location around. We | |
12137 | don't hold locations forever so to reduce chances of | |
12138 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12139 | SIGTRAP. | |
12140 | ||
12141 | The heuristic failing can be disastrous on | |
12142 | decr_pc_after_break targets. | |
12143 | ||
12144 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12145 | if we fail to recognize a late breakpoint SIGTRAP, | |
12146 | because events_till_retirement has reached 0 too | |
12147 | soon, we'll fail to do the PC adjustment, and report | |
12148 | a random SIGTRAP to the user. When the user resumes | |
12149 | the inferior, it will most likely immediately crash | |
2dec564e | 12150 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12151 | corrupted, because of being resumed e.g., in the |
12152 | middle of a multi-byte instruction, or skipped a | |
12153 | one-byte instruction. This was actually seen happen | |
12154 | on native x86-linux, and should be less rare on | |
12155 | targets that do not support new thread events, like | |
12156 | remote, due to the heuristic depending on | |
12157 | thread_count. | |
12158 | ||
12159 | Mistaking a random SIGTRAP for a breakpoint trap | |
12160 | causes similar symptoms (PC adjustment applied when | |
12161 | it shouldn't), but then again, playing with SIGTRAPs | |
12162 | behind the debugger's back is asking for trouble. | |
12163 | ||
12164 | Since hardware watchpoint traps are always | |
12165 | distinguishable from other traps, so we don't need to | |
12166 | apply keep hardware watchpoint moribund locations | |
12167 | around. We simply always ignore hardware watchpoint | |
12168 | traps we can no longer explain. */ | |
12169 | ||
876fa593 JK |
12170 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12171 | old_loc->owner = NULL; | |
20874c92 | 12172 | |
876fa593 | 12173 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12174 | } |
12175 | else | |
f431efe5 PA |
12176 | { |
12177 | old_loc->owner = NULL; | |
12178 | decref_bp_location (&old_loc); | |
12179 | } | |
20874c92 | 12180 | } |
74960c60 | 12181 | } |
1c5cfe86 | 12182 | |
348d480f PA |
12183 | /* Rescan breakpoints at the same address and section, marking the |
12184 | first one as "first" and any others as "duplicates". This is so | |
12185 | that the bpt instruction is only inserted once. If we have a | |
12186 | permanent breakpoint at the same place as BPT, make that one the | |
12187 | official one, and the rest as duplicates. Permanent breakpoints | |
12188 | are sorted first for the same address. | |
12189 | ||
12190 | Do the same for hardware watchpoints, but also considering the | |
12191 | watchpoint's type (regular/access/read) and length. */ | |
12192 | ||
12193 | bp_loc_first = NULL; | |
12194 | wp_loc_first = NULL; | |
12195 | awp_loc_first = NULL; | |
12196 | rwp_loc_first = NULL; | |
12197 | ALL_BP_LOCATIONS (loc, locp) | |
12198 | { | |
12199 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12200 | non-NULL. */ | |
348d480f | 12201 | struct bp_location **loc_first_p; |
d3fbdd86 | 12202 | b = loc->owner; |
348d480f | 12203 | |
f8eba3c6 | 12204 | if (!should_be_inserted (loc) |
348d480f | 12205 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12206 | /* Don't detect duplicate for tracepoint locations because they are |
12207 | never duplicated. See the comments in field `duplicate' of | |
12208 | `struct bp_location'. */ | |
348d480f | 12209 | || is_tracepoint (b)) |
b775012e LM |
12210 | { |
12211 | /* Clear the condition modification flag. */ | |
12212 | loc->condition_changed = condition_unchanged; | |
12213 | continue; | |
12214 | } | |
348d480f PA |
12215 | |
12216 | /* Permanent breakpoint should always be inserted. */ | |
12217 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12218 | internal_error (__FILE__, __LINE__, | |
12219 | _("allegedly permanent breakpoint is not " | |
12220 | "actually inserted")); | |
12221 | ||
12222 | if (b->type == bp_hardware_watchpoint) | |
12223 | loc_first_p = &wp_loc_first; | |
12224 | else if (b->type == bp_read_watchpoint) | |
12225 | loc_first_p = &rwp_loc_first; | |
12226 | else if (b->type == bp_access_watchpoint) | |
12227 | loc_first_p = &awp_loc_first; | |
12228 | else | |
12229 | loc_first_p = &bp_loc_first; | |
12230 | ||
12231 | if (*loc_first_p == NULL | |
12232 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12233 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12234 | { | |
12235 | *loc_first_p = loc; | |
12236 | loc->duplicate = 0; | |
b775012e LM |
12237 | |
12238 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12239 | { | |
12240 | loc->needs_update = 1; | |
12241 | /* Clear the condition modification flag. */ | |
12242 | loc->condition_changed = condition_unchanged; | |
12243 | } | |
348d480f PA |
12244 | continue; |
12245 | } | |
12246 | ||
934709f0 PW |
12247 | |
12248 | /* This and the above ensure the invariant that the first location | |
12249 | is not duplicated, and is the inserted one. | |
12250 | All following are marked as duplicated, and are not inserted. */ | |
12251 | if (loc->inserted) | |
12252 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12253 | loc->duplicate = 1; |
12254 | ||
b775012e LM |
12255 | /* Clear the condition modification flag. */ |
12256 | loc->condition_changed = condition_unchanged; | |
12257 | ||
348d480f PA |
12258 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12259 | && b->enable_state != bp_permanent) | |
12260 | internal_error (__FILE__, __LINE__, | |
12261 | _("another breakpoint was inserted on top of " | |
12262 | "a permanent breakpoint")); | |
12263 | } | |
12264 | ||
b775012e | 12265 | if (breakpoints_always_inserted_mode () |
348d480f PA |
12266 | && (have_live_inferiors () |
12267 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) | |
b775012e LM |
12268 | { |
12269 | if (should_insert) | |
12270 | insert_breakpoint_locations (); | |
12271 | else | |
12272 | { | |
12273 | /* Though should_insert is false, we may need to update conditions | |
12274 | on the target's side if it is evaluating such conditions. We | |
12275 | only update conditions for locations that are marked | |
12276 | "needs_update". */ | |
12277 | update_inserted_breakpoint_locations (); | |
12278 | } | |
12279 | } | |
348d480f | 12280 | |
1e4d1764 YQ |
12281 | if (should_insert) |
12282 | download_tracepoint_locations (); | |
12283 | ||
348d480f PA |
12284 | do_cleanups (cleanups); |
12285 | } | |
12286 | ||
12287 | void | |
12288 | breakpoint_retire_moribund (void) | |
12289 | { | |
12290 | struct bp_location *loc; | |
12291 | int ix; | |
12292 | ||
12293 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12294 | if (--(loc->events_till_retirement) == 0) | |
12295 | { | |
12296 | decref_bp_location (&loc); | |
12297 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12298 | --ix; | |
12299 | } | |
12300 | } | |
12301 | ||
12302 | static void | |
12303 | update_global_location_list_nothrow (int inserting) | |
12304 | { | |
bfd189b1 | 12305 | volatile struct gdb_exception e; |
348d480f PA |
12306 | |
12307 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12308 | update_global_location_list (inserting); | |
12309 | } | |
12310 | ||
12311 | /* Clear BKP from a BPS. */ | |
12312 | ||
12313 | static void | |
12314 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12315 | { | |
12316 | bpstat bs; | |
12317 | ||
12318 | for (bs = bps; bs; bs = bs->next) | |
12319 | if (bs->breakpoint_at == bpt) | |
12320 | { | |
12321 | bs->breakpoint_at = NULL; | |
12322 | bs->old_val = NULL; | |
12323 | /* bs->commands will be freed later. */ | |
12324 | } | |
12325 | } | |
12326 | ||
12327 | /* Callback for iterate_over_threads. */ | |
12328 | static int | |
12329 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12330 | { | |
12331 | struct breakpoint *bpt = data; | |
12332 | ||
12333 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12334 | return 0; | |
12335 | } | |
12336 | ||
12337 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12338 | callbacks. */ | |
12339 | ||
12340 | static void | |
12341 | say_where (struct breakpoint *b) | |
12342 | { | |
79a45e25 | 12343 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12344 | struct value_print_options opts; |
12345 | ||
12346 | get_user_print_options (&opts); | |
12347 | ||
12348 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12349 | single string. */ | |
12350 | if (b->loc == NULL) | |
12351 | { | |
12352 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12353 | } | |
12354 | else | |
12355 | { | |
f8eba3c6 | 12356 | if (opts.addressprint || b->loc->source_file == NULL) |
348d480f PA |
12357 | { |
12358 | printf_filtered (" at "); | |
12359 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12360 | gdb_stdout); | |
12361 | } | |
f8eba3c6 TT |
12362 | if (b->loc->source_file) |
12363 | { | |
12364 | /* If there is a single location, we can print the location | |
12365 | more nicely. */ | |
12366 | if (b->loc->next == NULL) | |
12367 | printf_filtered (": file %s, line %d.", | |
12368 | b->loc->source_file, b->loc->line_number); | |
12369 | else | |
12370 | /* This is not ideal, but each location may have a | |
12371 | different file name, and this at least reflects the | |
12372 | real situation somewhat. */ | |
12373 | printf_filtered (": %s.", b->addr_string); | |
12374 | } | |
348d480f PA |
12375 | |
12376 | if (b->loc->next) | |
12377 | { | |
12378 | struct bp_location *loc = b->loc; | |
12379 | int n = 0; | |
12380 | for (; loc; loc = loc->next) | |
12381 | ++n; | |
12382 | printf_filtered (" (%d locations)", n); | |
12383 | } | |
12384 | } | |
12385 | } | |
12386 | ||
348d480f PA |
12387 | /* Default bp_location_ops methods. */ |
12388 | ||
12389 | static void | |
12390 | bp_location_dtor (struct bp_location *self) | |
12391 | { | |
12392 | xfree (self->cond); | |
b775012e LM |
12393 | if (self->cond_bytecode) |
12394 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12395 | xfree (self->function_name); |
f8eba3c6 | 12396 | xfree (self->source_file); |
348d480f PA |
12397 | } |
12398 | ||
12399 | static const struct bp_location_ops bp_location_ops = | |
12400 | { | |
12401 | bp_location_dtor | |
12402 | }; | |
12403 | ||
2060206e PA |
12404 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12405 | inherit from. */ | |
348d480f | 12406 | |
2060206e PA |
12407 | static void |
12408 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12409 | { |
12410 | decref_counted_command_line (&self->commands); | |
12411 | xfree (self->cond_string); | |
348d480f | 12412 | xfree (self->addr_string); |
f8eba3c6 | 12413 | xfree (self->filter); |
348d480f | 12414 | xfree (self->addr_string_range_end); |
348d480f PA |
12415 | } |
12416 | ||
2060206e PA |
12417 | static struct bp_location * |
12418 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12419 | { |
12420 | struct bp_location *loc; | |
12421 | ||
12422 | loc = XNEW (struct bp_location); | |
12423 | init_bp_location (loc, &bp_location_ops, self); | |
12424 | return loc; | |
12425 | } | |
12426 | ||
2060206e PA |
12427 | static void |
12428 | base_breakpoint_re_set (struct breakpoint *b) | |
12429 | { | |
12430 | /* Nothing to re-set. */ | |
12431 | } | |
12432 | ||
12433 | #define internal_error_pure_virtual_called() \ | |
12434 | gdb_assert_not_reached ("pure virtual function called") | |
12435 | ||
12436 | static int | |
12437 | base_breakpoint_insert_location (struct bp_location *bl) | |
12438 | { | |
12439 | internal_error_pure_virtual_called (); | |
12440 | } | |
12441 | ||
12442 | static int | |
12443 | base_breakpoint_remove_location (struct bp_location *bl) | |
12444 | { | |
12445 | internal_error_pure_virtual_called (); | |
12446 | } | |
12447 | ||
12448 | static int | |
12449 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12450 | struct address_space *aspace, | |
09ac7c10 TT |
12451 | CORE_ADDR bp_addr, |
12452 | const struct target_waitstatus *ws) | |
2060206e PA |
12453 | { |
12454 | internal_error_pure_virtual_called (); | |
12455 | } | |
12456 | ||
12457 | static void | |
12458 | base_breakpoint_check_status (bpstat bs) | |
12459 | { | |
12460 | /* Always stop. */ | |
12461 | } | |
12462 | ||
12463 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12464 | errors. */ | |
12465 | ||
12466 | static int | |
12467 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12468 | { | |
12469 | internal_error_pure_virtual_called (); | |
12470 | } | |
12471 | ||
12472 | /* A "resources_needed" breakpoint_ops method that just internal | |
12473 | errors. */ | |
12474 | ||
12475 | static int | |
12476 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12477 | { | |
12478 | internal_error_pure_virtual_called (); | |
12479 | } | |
12480 | ||
12481 | static enum print_stop_action | |
12482 | base_breakpoint_print_it (bpstat bs) | |
12483 | { | |
12484 | internal_error_pure_virtual_called (); | |
12485 | } | |
12486 | ||
12487 | static void | |
12488 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12489 | struct ui_out *uiout) | |
12490 | { | |
12491 | /* nothing */ | |
12492 | } | |
12493 | ||
12494 | static void | |
12495 | base_breakpoint_print_mention (struct breakpoint *b) | |
12496 | { | |
12497 | internal_error_pure_virtual_called (); | |
12498 | } | |
12499 | ||
12500 | static void | |
12501 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12502 | { | |
12503 | internal_error_pure_virtual_called (); | |
12504 | } | |
12505 | ||
983af33b SDJ |
12506 | static void |
12507 | base_breakpoint_create_sals_from_address (char **arg, | |
12508 | struct linespec_result *canonical, | |
12509 | enum bptype type_wanted, | |
12510 | char *addr_start, | |
12511 | char **copy_arg) | |
12512 | { | |
12513 | internal_error_pure_virtual_called (); | |
12514 | } | |
12515 | ||
12516 | static void | |
12517 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12518 | struct linespec_result *c, | |
12519 | struct linespec_sals *lsal, | |
12520 | char *cond_string, | |
e7e0cddf | 12521 | char *extra_string, |
983af33b SDJ |
12522 | enum bptype type_wanted, |
12523 | enum bpdisp disposition, | |
12524 | int thread, | |
12525 | int task, int ignore_count, | |
12526 | const struct breakpoint_ops *o, | |
12527 | int from_tty, int enabled, | |
44f238bb | 12528 | int internal, unsigned flags) |
983af33b SDJ |
12529 | { |
12530 | internal_error_pure_virtual_called (); | |
12531 | } | |
12532 | ||
12533 | static void | |
12534 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12535 | struct symtabs_and_lines *sals) | |
12536 | { | |
12537 | internal_error_pure_virtual_called (); | |
12538 | } | |
12539 | ||
2060206e PA |
12540 | static struct breakpoint_ops base_breakpoint_ops = |
12541 | { | |
12542 | base_breakpoint_dtor, | |
12543 | base_breakpoint_allocate_location, | |
12544 | base_breakpoint_re_set, | |
12545 | base_breakpoint_insert_location, | |
12546 | base_breakpoint_remove_location, | |
12547 | base_breakpoint_breakpoint_hit, | |
12548 | base_breakpoint_check_status, | |
12549 | base_breakpoint_resources_needed, | |
12550 | base_breakpoint_works_in_software_mode, | |
12551 | base_breakpoint_print_it, | |
12552 | NULL, | |
12553 | base_breakpoint_print_one_detail, | |
12554 | base_breakpoint_print_mention, | |
983af33b SDJ |
12555 | base_breakpoint_print_recreate, |
12556 | base_breakpoint_create_sals_from_address, | |
12557 | base_breakpoint_create_breakpoints_sal, | |
12558 | base_breakpoint_decode_linespec, | |
2060206e PA |
12559 | }; |
12560 | ||
12561 | /* Default breakpoint_ops methods. */ | |
12562 | ||
12563 | static void | |
348d480f PA |
12564 | bkpt_re_set (struct breakpoint *b) |
12565 | { | |
06edf0c0 PA |
12566 | /* FIXME: is this still reachable? */ |
12567 | if (b->addr_string == NULL) | |
12568 | { | |
12569 | /* Anything without a string can't be re-set. */ | |
348d480f | 12570 | delete_breakpoint (b); |
06edf0c0 | 12571 | return; |
348d480f | 12572 | } |
06edf0c0 PA |
12573 | |
12574 | breakpoint_re_set_default (b); | |
348d480f PA |
12575 | } |
12576 | ||
2060206e | 12577 | static int |
348d480f PA |
12578 | bkpt_insert_location (struct bp_location *bl) |
12579 | { | |
12580 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12581 | return target_insert_hw_breakpoint (bl->gdbarch, | |
12582 | &bl->target_info); | |
12583 | else | |
12584 | return target_insert_breakpoint (bl->gdbarch, | |
12585 | &bl->target_info); | |
12586 | } | |
12587 | ||
2060206e | 12588 | static int |
348d480f PA |
12589 | bkpt_remove_location (struct bp_location *bl) |
12590 | { | |
12591 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12592 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12593 | else | |
12594 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
12595 | } | |
12596 | ||
2060206e | 12597 | static int |
348d480f | 12598 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12599 | struct address_space *aspace, CORE_ADDR bp_addr, |
12600 | const struct target_waitstatus *ws) | |
348d480f PA |
12601 | { |
12602 | struct breakpoint *b = bl->owner; | |
12603 | ||
09ac7c10 | 12604 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12605 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12606 | return 0; |
12607 | ||
348d480f PA |
12608 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12609 | aspace, bp_addr)) | |
12610 | return 0; | |
12611 | ||
12612 | if (overlay_debugging /* unmapped overlay section */ | |
12613 | && section_is_overlay (bl->section) | |
12614 | && !section_is_mapped (bl->section)) | |
12615 | return 0; | |
12616 | ||
12617 | return 1; | |
12618 | } | |
12619 | ||
2060206e | 12620 | static int |
348d480f PA |
12621 | bkpt_resources_needed (const struct bp_location *bl) |
12622 | { | |
12623 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12624 | ||
12625 | return 1; | |
12626 | } | |
12627 | ||
2060206e | 12628 | static enum print_stop_action |
348d480f PA |
12629 | bkpt_print_it (bpstat bs) |
12630 | { | |
348d480f PA |
12631 | struct breakpoint *b; |
12632 | const struct bp_location *bl; | |
001c8c33 | 12633 | int bp_temp; |
79a45e25 | 12634 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12635 | |
12636 | gdb_assert (bs->bp_location_at != NULL); | |
12637 | ||
12638 | bl = bs->bp_location_at; | |
12639 | b = bs->breakpoint_at; | |
12640 | ||
001c8c33 PA |
12641 | bp_temp = b->disposition == disp_del; |
12642 | if (bl->address != bl->requested_address) | |
12643 | breakpoint_adjustment_warning (bl->requested_address, | |
12644 | bl->address, | |
12645 | b->number, 1); | |
12646 | annotate_breakpoint (b->number); | |
12647 | if (bp_temp) | |
12648 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12649 | else | |
12650 | ui_out_text (uiout, "\nBreakpoint "); | |
12651 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12652 | { |
001c8c33 PA |
12653 | ui_out_field_string (uiout, "reason", |
12654 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12655 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12656 | } |
001c8c33 PA |
12657 | ui_out_field_int (uiout, "bkptno", b->number); |
12658 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12659 | |
001c8c33 | 12660 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12661 | } |
12662 | ||
2060206e | 12663 | static void |
06edf0c0 PA |
12664 | bkpt_print_mention (struct breakpoint *b) |
12665 | { | |
79a45e25 | 12666 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12667 | return; |
12668 | ||
12669 | switch (b->type) | |
12670 | { | |
12671 | case bp_breakpoint: | |
12672 | case bp_gnu_ifunc_resolver: | |
12673 | if (b->disposition == disp_del) | |
12674 | printf_filtered (_("Temporary breakpoint")); | |
12675 | else | |
12676 | printf_filtered (_("Breakpoint")); | |
12677 | printf_filtered (_(" %d"), b->number); | |
12678 | if (b->type == bp_gnu_ifunc_resolver) | |
12679 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12680 | break; | |
12681 | case bp_hardware_breakpoint: | |
12682 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12683 | break; | |
e7e0cddf SS |
12684 | case bp_dprintf: |
12685 | printf_filtered (_("Dprintf %d"), b->number); | |
12686 | break; | |
06edf0c0 PA |
12687 | } |
12688 | ||
12689 | say_where (b); | |
12690 | } | |
12691 | ||
2060206e | 12692 | static void |
06edf0c0 PA |
12693 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12694 | { | |
12695 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12696 | fprintf_unfiltered (fp, "tbreak"); | |
12697 | else if (tp->type == bp_breakpoint) | |
12698 | fprintf_unfiltered (fp, "break"); | |
12699 | else if (tp->type == bp_hardware_breakpoint | |
12700 | && tp->disposition == disp_del) | |
12701 | fprintf_unfiltered (fp, "thbreak"); | |
12702 | else if (tp->type == bp_hardware_breakpoint) | |
12703 | fprintf_unfiltered (fp, "hbreak"); | |
12704 | else | |
12705 | internal_error (__FILE__, __LINE__, | |
12706 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12707 | ||
2060206e | 12708 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 12709 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12710 | } |
12711 | ||
983af33b SDJ |
12712 | static void |
12713 | bkpt_create_sals_from_address (char **arg, | |
12714 | struct linespec_result *canonical, | |
12715 | enum bptype type_wanted, | |
12716 | char *addr_start, char **copy_arg) | |
12717 | { | |
12718 | create_sals_from_address_default (arg, canonical, type_wanted, | |
12719 | addr_start, copy_arg); | |
12720 | } | |
12721 | ||
12722 | static void | |
12723 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12724 | struct linespec_result *canonical, | |
12725 | struct linespec_sals *lsal, | |
12726 | char *cond_string, | |
e7e0cddf | 12727 | char *extra_string, |
983af33b SDJ |
12728 | enum bptype type_wanted, |
12729 | enum bpdisp disposition, | |
12730 | int thread, | |
12731 | int task, int ignore_count, | |
12732 | const struct breakpoint_ops *ops, | |
12733 | int from_tty, int enabled, | |
44f238bb | 12734 | int internal, unsigned flags) |
983af33b SDJ |
12735 | { |
12736 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
12737 | cond_string, extra_string, |
12738 | type_wanted, | |
983af33b SDJ |
12739 | disposition, thread, task, |
12740 | ignore_count, ops, from_tty, | |
44f238bb | 12741 | enabled, internal, flags); |
983af33b SDJ |
12742 | } |
12743 | ||
12744 | static void | |
12745 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
12746 | struct symtabs_and_lines *sals) | |
12747 | { | |
12748 | decode_linespec_default (b, s, sals); | |
12749 | } | |
12750 | ||
06edf0c0 PA |
12751 | /* Virtual table for internal breakpoints. */ |
12752 | ||
12753 | static void | |
12754 | internal_bkpt_re_set (struct breakpoint *b) | |
12755 | { | |
12756 | switch (b->type) | |
12757 | { | |
12758 | /* Delete overlay event and longjmp master breakpoints; they | |
12759 | will be reset later by breakpoint_re_set. */ | |
12760 | case bp_overlay_event: | |
12761 | case bp_longjmp_master: | |
12762 | case bp_std_terminate_master: | |
12763 | case bp_exception_master: | |
12764 | delete_breakpoint (b); | |
12765 | break; | |
12766 | ||
12767 | /* This breakpoint is special, it's set up when the inferior | |
12768 | starts and we really don't want to touch it. */ | |
12769 | case bp_shlib_event: | |
12770 | ||
12771 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12772 | it is set up, we do not want to touch it. */ | |
12773 | case bp_thread_event: | |
12774 | break; | |
12775 | } | |
12776 | } | |
12777 | ||
12778 | static void | |
12779 | internal_bkpt_check_status (bpstat bs) | |
12780 | { | |
a9b3a50f PA |
12781 | if (bs->breakpoint_at->type == bp_shlib_event) |
12782 | { | |
12783 | /* If requested, stop when the dynamic linker notifies GDB of | |
12784 | events. This allows the user to get control and place | |
12785 | breakpoints in initializer routines for dynamically loaded | |
12786 | objects (among other things). */ | |
12787 | bs->stop = stop_on_solib_events; | |
12788 | bs->print = stop_on_solib_events; | |
12789 | } | |
12790 | else | |
12791 | bs->stop = 0; | |
06edf0c0 PA |
12792 | } |
12793 | ||
12794 | static enum print_stop_action | |
12795 | internal_bkpt_print_it (bpstat bs) | |
12796 | { | |
36dfb11c | 12797 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 12798 | struct breakpoint *b; |
06edf0c0 | 12799 | |
06edf0c0 PA |
12800 | b = bs->breakpoint_at; |
12801 | ||
06edf0c0 PA |
12802 | switch (b->type) |
12803 | { | |
348d480f PA |
12804 | case bp_shlib_event: |
12805 | /* Did we stop because the user set the stop_on_solib_events | |
12806 | variable? (If so, we report this as a generic, "Stopped due | |
12807 | to shlib event" message.) */ | |
edcc5120 | 12808 | print_solib_event (0); |
348d480f PA |
12809 | break; |
12810 | ||
12811 | case bp_thread_event: | |
12812 | /* Not sure how we will get here. | |
12813 | GDB should not stop for these breakpoints. */ | |
12814 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12815 | break; |
12816 | ||
12817 | case bp_overlay_event: | |
12818 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12819 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12820 | break; |
12821 | ||
12822 | case bp_longjmp_master: | |
12823 | /* These should never be enabled. */ | |
12824 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12825 | break; |
12826 | ||
12827 | case bp_std_terminate_master: | |
12828 | /* These should never be enabled. */ | |
12829 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12830 | "gdb should not stop!\n")); | |
348d480f PA |
12831 | break; |
12832 | ||
12833 | case bp_exception_master: | |
12834 | /* These should never be enabled. */ | |
12835 | printf_filtered (_("Exception Master Breakpoint: " | |
12836 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12837 | break; |
12838 | } | |
12839 | ||
001c8c33 | 12840 | return PRINT_NOTHING; |
06edf0c0 PA |
12841 | } |
12842 | ||
12843 | static void | |
12844 | internal_bkpt_print_mention (struct breakpoint *b) | |
12845 | { | |
12846 | /* Nothing to mention. These breakpoints are internal. */ | |
12847 | } | |
12848 | ||
06edf0c0 PA |
12849 | /* Virtual table for momentary breakpoints */ |
12850 | ||
12851 | static void | |
12852 | momentary_bkpt_re_set (struct breakpoint *b) | |
12853 | { | |
12854 | /* Keep temporary breakpoints, which can be encountered when we step | |
12855 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
12856 | Otherwise these should have been blown away via the cleanup chain | |
12857 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12858 | } | |
12859 | ||
12860 | static void | |
12861 | momentary_bkpt_check_status (bpstat bs) | |
12862 | { | |
12863 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12864 | } | |
12865 | ||
12866 | static enum print_stop_action | |
12867 | momentary_bkpt_print_it (bpstat bs) | |
12868 | { | |
79a45e25 PA |
12869 | struct ui_out *uiout = current_uiout; |
12870 | ||
001c8c33 | 12871 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 12872 | { |
001c8c33 | 12873 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 12874 | |
001c8c33 PA |
12875 | switch (b->type) |
12876 | { | |
12877 | case bp_finish: | |
12878 | ui_out_field_string | |
12879 | (uiout, "reason", | |
12880 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
12881 | break; | |
348d480f | 12882 | |
001c8c33 PA |
12883 | case bp_until: |
12884 | ui_out_field_string | |
12885 | (uiout, "reason", | |
12886 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
12887 | break; | |
12888 | } | |
348d480f PA |
12889 | } |
12890 | ||
001c8c33 | 12891 | return PRINT_UNKNOWN; |
348d480f PA |
12892 | } |
12893 | ||
06edf0c0 PA |
12894 | static void |
12895 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12896 | { |
06edf0c0 | 12897 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12898 | } |
12899 | ||
e2e4d78b JK |
12900 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
12901 | ||
12902 | It gets cleared already on the removal of the first one of such placed | |
12903 | breakpoints. This is OK as they get all removed altogether. */ | |
12904 | ||
12905 | static void | |
12906 | longjmp_bkpt_dtor (struct breakpoint *self) | |
12907 | { | |
12908 | struct thread_info *tp = find_thread_id (self->thread); | |
12909 | ||
12910 | if (tp) | |
12911 | tp->initiating_frame = null_frame_id; | |
12912 | ||
12913 | momentary_breakpoint_ops.dtor (self); | |
12914 | } | |
12915 | ||
55aa24fb SDJ |
12916 | /* Specific methods for probe breakpoints. */ |
12917 | ||
12918 | static int | |
12919 | bkpt_probe_insert_location (struct bp_location *bl) | |
12920 | { | |
12921 | int v = bkpt_insert_location (bl); | |
12922 | ||
12923 | if (v == 0) | |
12924 | { | |
12925 | /* The insertion was successful, now let's set the probe's semaphore | |
12926 | if needed. */ | |
12927 | bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch); | |
12928 | } | |
12929 | ||
12930 | return v; | |
12931 | } | |
12932 | ||
12933 | static int | |
12934 | bkpt_probe_remove_location (struct bp_location *bl) | |
12935 | { | |
12936 | /* Let's clear the semaphore before removing the location. */ | |
12937 | bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch); | |
12938 | ||
12939 | return bkpt_remove_location (bl); | |
12940 | } | |
12941 | ||
12942 | static void | |
12943 | bkpt_probe_create_sals_from_address (char **arg, | |
12944 | struct linespec_result *canonical, | |
12945 | enum bptype type_wanted, | |
12946 | char *addr_start, char **copy_arg) | |
12947 | { | |
12948 | struct linespec_sals lsal; | |
12949 | ||
12950 | lsal.sals = parse_probes (arg, canonical); | |
12951 | ||
12952 | *copy_arg = xstrdup (canonical->addr_string); | |
12953 | lsal.canonical = xstrdup (*copy_arg); | |
12954 | ||
12955 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
12956 | } | |
12957 | ||
12958 | static void | |
12959 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
12960 | struct symtabs_and_lines *sals) | |
12961 | { | |
12962 | *sals = parse_probes (s, NULL); | |
12963 | if (!sals->sals) | |
12964 | error (_("probe not found")); | |
12965 | } | |
12966 | ||
348d480f | 12967 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12968 | |
348d480f PA |
12969 | static void |
12970 | tracepoint_re_set (struct breakpoint *b) | |
12971 | { | |
12972 | breakpoint_re_set_default (b); | |
12973 | } | |
876fa593 | 12974 | |
348d480f PA |
12975 | static int |
12976 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
12977 | struct address_space *aspace, CORE_ADDR bp_addr, |
12978 | const struct target_waitstatus *ws) | |
348d480f PA |
12979 | { |
12980 | /* By definition, the inferior does not report stops at | |
12981 | tracepoints. */ | |
12982 | return 0; | |
74960c60 VP |
12983 | } |
12984 | ||
12985 | static void | |
348d480f PA |
12986 | tracepoint_print_one_detail (const struct breakpoint *self, |
12987 | struct ui_out *uiout) | |
74960c60 | 12988 | { |
d9b3f62e PA |
12989 | struct tracepoint *tp = (struct tracepoint *) self; |
12990 | if (tp->static_trace_marker_id) | |
348d480f PA |
12991 | { |
12992 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12993 | |
348d480f PA |
12994 | ui_out_text (uiout, "\tmarker id is "); |
12995 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 12996 | tp->static_trace_marker_id); |
348d480f PA |
12997 | ui_out_text (uiout, "\n"); |
12998 | } | |
0d381245 VP |
12999 | } |
13000 | ||
a474d7c2 | 13001 | static void |
348d480f | 13002 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13003 | { |
79a45e25 | 13004 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13005 | return; |
cc59ec59 | 13006 | |
348d480f PA |
13007 | switch (b->type) |
13008 | { | |
13009 | case bp_tracepoint: | |
13010 | printf_filtered (_("Tracepoint")); | |
13011 | printf_filtered (_(" %d"), b->number); | |
13012 | break; | |
13013 | case bp_fast_tracepoint: | |
13014 | printf_filtered (_("Fast tracepoint")); | |
13015 | printf_filtered (_(" %d"), b->number); | |
13016 | break; | |
13017 | case bp_static_tracepoint: | |
13018 | printf_filtered (_("Static tracepoint")); | |
13019 | printf_filtered (_(" %d"), b->number); | |
13020 | break; | |
13021 | default: | |
13022 | internal_error (__FILE__, __LINE__, | |
13023 | _("unhandled tracepoint type %d"), (int) b->type); | |
13024 | } | |
13025 | ||
13026 | say_where (b); | |
a474d7c2 PA |
13027 | } |
13028 | ||
348d480f | 13029 | static void |
d9b3f62e | 13030 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13031 | { |
d9b3f62e PA |
13032 | struct tracepoint *tp = (struct tracepoint *) self; |
13033 | ||
13034 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13035 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13036 | if (self->type == bp_static_tracepoint) |
348d480f | 13037 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13038 | else if (self->type == bp_tracepoint) |
348d480f PA |
13039 | fprintf_unfiltered (fp, "trace"); |
13040 | else | |
13041 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13042 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13043 | |
d9b3f62e PA |
13044 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13045 | print_recreate_thread (self, fp); | |
13046 | ||
13047 | if (tp->pass_count) | |
13048 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13049 | } |
13050 | ||
983af33b SDJ |
13051 | static void |
13052 | tracepoint_create_sals_from_address (char **arg, | |
13053 | struct linespec_result *canonical, | |
13054 | enum bptype type_wanted, | |
13055 | char *addr_start, char **copy_arg) | |
13056 | { | |
13057 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13058 | addr_start, copy_arg); | |
13059 | } | |
13060 | ||
13061 | static void | |
13062 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13063 | struct linespec_result *canonical, | |
13064 | struct linespec_sals *lsal, | |
13065 | char *cond_string, | |
e7e0cddf | 13066 | char *extra_string, |
983af33b SDJ |
13067 | enum bptype type_wanted, |
13068 | enum bpdisp disposition, | |
13069 | int thread, | |
13070 | int task, int ignore_count, | |
13071 | const struct breakpoint_ops *ops, | |
13072 | int from_tty, int enabled, | |
44f238bb | 13073 | int internal, unsigned flags) |
983af33b SDJ |
13074 | { |
13075 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13076 | cond_string, extra_string, |
13077 | type_wanted, | |
983af33b SDJ |
13078 | disposition, thread, task, |
13079 | ignore_count, ops, from_tty, | |
44f238bb | 13080 | enabled, internal, flags); |
983af33b SDJ |
13081 | } |
13082 | ||
13083 | static void | |
13084 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13085 | struct symtabs_and_lines *sals) | |
13086 | { | |
13087 | decode_linespec_default (b, s, sals); | |
13088 | } | |
13089 | ||
2060206e | 13090 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13091 | |
55aa24fb SDJ |
13092 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13093 | static probe. */ | |
13094 | ||
13095 | static void | |
13096 | tracepoint_probe_create_sals_from_address (char **arg, | |
13097 | struct linespec_result *canonical, | |
13098 | enum bptype type_wanted, | |
13099 | char *addr_start, char **copy_arg) | |
13100 | { | |
13101 | /* We use the same method for breakpoint on probes. */ | |
13102 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13103 | addr_start, copy_arg); | |
13104 | } | |
13105 | ||
13106 | static void | |
13107 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13108 | struct symtabs_and_lines *sals) | |
13109 | { | |
13110 | /* We use the same method for breakpoint on probes. */ | |
13111 | bkpt_probe_decode_linespec (b, s, sals); | |
13112 | } | |
13113 | ||
13114 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13115 | ||
983af33b SDJ |
13116 | /* The breakpoint_ops structure to be used on static tracepoints with |
13117 | markers (`-m'). */ | |
13118 | ||
13119 | static void | |
13120 | strace_marker_create_sals_from_address (char **arg, | |
13121 | struct linespec_result *canonical, | |
13122 | enum bptype type_wanted, | |
13123 | char *addr_start, char **copy_arg) | |
13124 | { | |
13125 | struct linespec_sals lsal; | |
13126 | ||
13127 | lsal.sals = decode_static_tracepoint_spec (arg); | |
13128 | ||
13129 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
13130 | ||
13131 | canonical->addr_string = xstrdup (*copy_arg); | |
13132 | lsal.canonical = xstrdup (*copy_arg); | |
13133 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13134 | } | |
13135 | ||
13136 | static void | |
13137 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13138 | struct linespec_result *canonical, | |
13139 | struct linespec_sals *lsal, | |
13140 | char *cond_string, | |
e7e0cddf | 13141 | char *extra_string, |
983af33b SDJ |
13142 | enum bptype type_wanted, |
13143 | enum bpdisp disposition, | |
13144 | int thread, | |
13145 | int task, int ignore_count, | |
13146 | const struct breakpoint_ops *ops, | |
13147 | int from_tty, int enabled, | |
44f238bb | 13148 | int internal, unsigned flags) |
983af33b SDJ |
13149 | { |
13150 | int i; | |
13151 | ||
13152 | /* If the user is creating a static tracepoint by marker id | |
13153 | (strace -m MARKER_ID), then store the sals index, so that | |
13154 | breakpoint_re_set can try to match up which of the newly | |
13155 | found markers corresponds to this one, and, don't try to | |
13156 | expand multiple locations for each sal, given than SALS | |
13157 | already should contain all sals for MARKER_ID. */ | |
13158 | ||
13159 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13160 | { | |
13161 | struct symtabs_and_lines expanded; | |
13162 | struct tracepoint *tp; | |
13163 | struct cleanup *old_chain; | |
13164 | char *addr_string; | |
13165 | ||
13166 | expanded.nelts = 1; | |
13167 | expanded.sals = &lsal->sals.sals[i]; | |
13168 | ||
13169 | addr_string = xstrdup (canonical->addr_string); | |
13170 | old_chain = make_cleanup (xfree, addr_string); | |
13171 | ||
13172 | tp = XCNEW (struct tracepoint); | |
13173 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
13174 | addr_string, NULL, | |
e7e0cddf SS |
13175 | cond_string, extra_string, |
13176 | type_wanted, disposition, | |
983af33b | 13177 | thread, task, ignore_count, ops, |
44f238bb | 13178 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13179 | canonical->special_display); |
13180 | /* Given that its possible to have multiple markers with | |
13181 | the same string id, if the user is creating a static | |
13182 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13183 | store the sals index, so that breakpoint_re_set can | |
13184 | try to match up which of the newly found markers | |
13185 | corresponds to this one */ | |
13186 | tp->static_trace_marker_id_idx = i; | |
13187 | ||
13188 | install_breakpoint (internal, &tp->base, 0); | |
13189 | ||
13190 | discard_cleanups (old_chain); | |
13191 | } | |
13192 | } | |
13193 | ||
13194 | static void | |
13195 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
13196 | struct symtabs_and_lines *sals) | |
13197 | { | |
13198 | struct tracepoint *tp = (struct tracepoint *) b; | |
13199 | ||
13200 | *sals = decode_static_tracepoint_spec (s); | |
13201 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
13202 | { | |
13203 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13204 | sals->nelts = 1; | |
13205 | } | |
13206 | else | |
13207 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13208 | } | |
13209 | ||
13210 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13211 | ||
13212 | static int | |
13213 | strace_marker_p (struct breakpoint *b) | |
13214 | { | |
13215 | return b->ops == &strace_marker_breakpoint_ops; | |
13216 | } | |
13217 | ||
53a5351d | 13218 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13219 | structures. */ |
c906108c SS |
13220 | |
13221 | void | |
fba45db2 | 13222 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13223 | { |
52f0bd74 | 13224 | struct breakpoint *b; |
c906108c | 13225 | |
8a3fe4f8 | 13226 | gdb_assert (bpt != NULL); |
c906108c | 13227 | |
4a64f543 MS |
13228 | /* Has this bp already been deleted? This can happen because |
13229 | multiple lists can hold pointers to bp's. bpstat lists are | |
13230 | especial culprits. | |
13231 | ||
13232 | One example of this happening is a watchpoint's scope bp. When | |
13233 | the scope bp triggers, we notice that the watchpoint is out of | |
13234 | scope, and delete it. We also delete its scope bp. But the | |
13235 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13236 | That bpstat is then checked for auto-deleting bp's, which are | |
13237 | deleted. | |
13238 | ||
13239 | A real solution to this problem might involve reference counts in | |
13240 | bp's, and/or giving them pointers back to their referencing | |
13241 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13242 | storage when no more references were extent. A cheaper bandaid | |
13243 | was chosen. */ | |
c906108c SS |
13244 | if (bpt->type == bp_none) |
13245 | return; | |
13246 | ||
4a64f543 MS |
13247 | /* At least avoid this stale reference until the reference counting |
13248 | of breakpoints gets resolved. */ | |
d0fb5eae | 13249 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13250 | { |
d0fb5eae | 13251 | struct breakpoint *related; |
3a5c3e22 | 13252 | struct watchpoint *w; |
d0fb5eae JK |
13253 | |
13254 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13255 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13256 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13257 | w = (struct watchpoint *) bpt; |
13258 | else | |
13259 | w = NULL; | |
13260 | if (w != NULL) | |
13261 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13262 | |
13263 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13264 | for (related = bpt; related->related_breakpoint != bpt; | |
13265 | related = related->related_breakpoint); | |
13266 | related->related_breakpoint = bpt->related_breakpoint; | |
13267 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13268 | } |
13269 | ||
a9634178 TJB |
13270 | /* watch_command_1 creates a watchpoint but only sets its number if |
13271 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13272 | a problem in that process, we'll be asked to delete the half-created | |
13273 | watchpoint. In that case, don't announce the deletion. */ | |
13274 | if (bpt->number) | |
13275 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13276 | |
c906108c SS |
13277 | if (breakpoint_chain == bpt) |
13278 | breakpoint_chain = bpt->next; | |
13279 | ||
c906108c SS |
13280 | ALL_BREAKPOINTS (b) |
13281 | if (b->next == bpt) | |
c5aa993b JM |
13282 | { |
13283 | b->next = bpt->next; | |
13284 | break; | |
13285 | } | |
c906108c | 13286 | |
f431efe5 PA |
13287 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13288 | been freed. */ | |
13289 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13290 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13291 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13292 | commands are associated with the bpstat; if we remove it here, | |
13293 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13294 | event-top.c won't do anything, and temporary breakpoints with | |
13295 | commands won't work. */ | |
13296 | ||
13297 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13298 | ||
4a64f543 MS |
13299 | /* Now that breakpoint is removed from breakpoint list, update the |
13300 | global location list. This will remove locations that used to | |
13301 | belong to this breakpoint. Do this before freeing the breakpoint | |
13302 | itself, since remove_breakpoint looks at location's owner. It | |
13303 | might be better design to have location completely | |
13304 | self-contained, but it's not the case now. */ | |
b60e7edf | 13305 | update_global_location_list (0); |
74960c60 | 13306 | |
348d480f | 13307 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13308 | /* On the chance that someone will soon try again to delete this |
13309 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13310 | bpt->type = bp_none; |
b8c9b27d | 13311 | xfree (bpt); |
c906108c SS |
13312 | } |
13313 | ||
4d6140d9 AC |
13314 | static void |
13315 | do_delete_breakpoint_cleanup (void *b) | |
13316 | { | |
13317 | delete_breakpoint (b); | |
13318 | } | |
13319 | ||
13320 | struct cleanup * | |
13321 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13322 | { | |
13323 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13324 | } | |
13325 | ||
51be5b68 PA |
13326 | /* Iterator function to call a user-provided callback function once |
13327 | for each of B and its related breakpoints. */ | |
13328 | ||
13329 | static void | |
13330 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13331 | void (*function) (struct breakpoint *, | |
13332 | void *), | |
13333 | void *data) | |
13334 | { | |
13335 | struct breakpoint *related; | |
13336 | ||
13337 | related = b; | |
13338 | do | |
13339 | { | |
13340 | struct breakpoint *next; | |
13341 | ||
13342 | /* FUNCTION may delete RELATED. */ | |
13343 | next = related->related_breakpoint; | |
13344 | ||
13345 | if (next == related) | |
13346 | { | |
13347 | /* RELATED is the last ring entry. */ | |
13348 | function (related, data); | |
13349 | ||
13350 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13351 | B. There's nothing left to do anyway, so just break | |
13352 | out. */ | |
13353 | break; | |
13354 | } | |
13355 | else | |
13356 | function (related, data); | |
13357 | ||
13358 | related = next; | |
13359 | } | |
13360 | while (related != b); | |
13361 | } | |
95a42b64 TT |
13362 | |
13363 | static void | |
13364 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13365 | { | |
13366 | delete_breakpoint (b); | |
13367 | } | |
13368 | ||
51be5b68 PA |
13369 | /* A callback for map_breakpoint_numbers that calls |
13370 | delete_breakpoint. */ | |
13371 | ||
13372 | static void | |
13373 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13374 | { | |
13375 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13376 | } | |
13377 | ||
c906108c | 13378 | void |
fba45db2 | 13379 | delete_command (char *arg, int from_tty) |
c906108c | 13380 | { |
35df4500 | 13381 | struct breakpoint *b, *b_tmp; |
c906108c | 13382 | |
ea9365bb TT |
13383 | dont_repeat (); |
13384 | ||
c906108c SS |
13385 | if (arg == 0) |
13386 | { | |
13387 | int breaks_to_delete = 0; | |
13388 | ||
46c6471b PA |
13389 | /* Delete all breakpoints if no argument. Do not delete |
13390 | internal breakpoints, these have to be deleted with an | |
13391 | explicit breakpoint number argument. */ | |
c5aa993b | 13392 | ALL_BREAKPOINTS (b) |
46c6471b | 13393 | if (user_breakpoint_p (b)) |
973d738b DJ |
13394 | { |
13395 | breaks_to_delete = 1; | |
13396 | break; | |
13397 | } | |
c906108c SS |
13398 | |
13399 | /* Ask user only if there are some breakpoints to delete. */ | |
13400 | if (!from_tty | |
e2e0b3e5 | 13401 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13402 | { |
35df4500 | 13403 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13404 | if (user_breakpoint_p (b)) |
c5aa993b | 13405 | delete_breakpoint (b); |
c906108c SS |
13406 | } |
13407 | } | |
13408 | else | |
51be5b68 | 13409 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13410 | } |
13411 | ||
0d381245 VP |
13412 | static int |
13413 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13414 | { |
0d381245 | 13415 | for (; loc; loc = loc->next) |
8645ff69 UW |
13416 | if (!loc->shlib_disabled |
13417 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13418 | return 0; |
13419 | return 1; | |
fe3f5fa8 VP |
13420 | } |
13421 | ||
776592bf DE |
13422 | /* Subroutine of update_breakpoint_locations to simplify it. |
13423 | Return non-zero if multiple fns in list LOC have the same name. | |
13424 | Null names are ignored. */ | |
13425 | ||
13426 | static int | |
13427 | ambiguous_names_p (struct bp_location *loc) | |
13428 | { | |
13429 | struct bp_location *l; | |
13430 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13431 | (int (*) (const void *, |
13432 | const void *)) streq, | |
776592bf DE |
13433 | NULL, xcalloc, xfree); |
13434 | ||
13435 | for (l = loc; l != NULL; l = l->next) | |
13436 | { | |
13437 | const char **slot; | |
13438 | const char *name = l->function_name; | |
13439 | ||
13440 | /* Allow for some names to be NULL, ignore them. */ | |
13441 | if (name == NULL) | |
13442 | continue; | |
13443 | ||
13444 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13445 | INSERT); | |
4a64f543 MS |
13446 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13447 | returns NULL. */ | |
776592bf DE |
13448 | if (*slot != NULL) |
13449 | { | |
13450 | htab_delete (htab); | |
13451 | return 1; | |
13452 | } | |
13453 | *slot = name; | |
13454 | } | |
13455 | ||
13456 | htab_delete (htab); | |
13457 | return 0; | |
13458 | } | |
13459 | ||
0fb4aa4b PA |
13460 | /* When symbols change, it probably means the sources changed as well, |
13461 | and it might mean the static tracepoint markers are no longer at | |
13462 | the same address or line numbers they used to be at last we | |
13463 | checked. Losing your static tracepoints whenever you rebuild is | |
13464 | undesirable. This function tries to resync/rematch gdb static | |
13465 | tracepoints with the markers on the target, for static tracepoints | |
13466 | that have not been set by marker id. Static tracepoint that have | |
13467 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13468 | The heuristic is: | |
13469 | ||
13470 | 1) For a tracepoint set at a specific address, look for a marker at | |
13471 | the old PC. If one is found there, assume to be the same marker. | |
13472 | If the name / string id of the marker found is different from the | |
13473 | previous known name, assume that means the user renamed the marker | |
13474 | in the sources, and output a warning. | |
13475 | ||
13476 | 2) For a tracepoint set at a given line number, look for a marker | |
13477 | at the new address of the old line number. If one is found there, | |
13478 | assume to be the same marker. If the name / string id of the | |
13479 | marker found is different from the previous known name, assume that | |
13480 | means the user renamed the marker in the sources, and output a | |
13481 | warning. | |
13482 | ||
13483 | 3) If a marker is no longer found at the same address or line, it | |
13484 | may mean the marker no longer exists. But it may also just mean | |
13485 | the code changed a bit. Maybe the user added a few lines of code | |
13486 | that made the marker move up or down (in line number terms). Ask | |
13487 | the target for info about the marker with the string id as we knew | |
13488 | it. If found, update line number and address in the matching | |
13489 | static tracepoint. This will get confused if there's more than one | |
13490 | marker with the same ID (possible in UST, although unadvised | |
13491 | precisely because it confuses tools). */ | |
13492 | ||
13493 | static struct symtab_and_line | |
13494 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13495 | { | |
d9b3f62e | 13496 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13497 | struct static_tracepoint_marker marker; |
13498 | CORE_ADDR pc; | |
0fb4aa4b PA |
13499 | |
13500 | pc = sal.pc; | |
13501 | if (sal.line) | |
13502 | find_line_pc (sal.symtab, sal.line, &pc); | |
13503 | ||
13504 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13505 | { | |
d9b3f62e | 13506 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13507 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13508 | b->number, | |
d9b3f62e | 13509 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13510 | |
d9b3f62e PA |
13511 | xfree (tp->static_trace_marker_id); |
13512 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13513 | release_static_tracepoint_marker (&marker); |
13514 | ||
13515 | return sal; | |
13516 | } | |
13517 | ||
13518 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13519 | by string ID. */ | |
13520 | if (!sal.explicit_pc | |
13521 | && sal.line != 0 | |
13522 | && sal.symtab != NULL | |
d9b3f62e | 13523 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13524 | { |
13525 | VEC(static_tracepoint_marker_p) *markers; | |
13526 | ||
13527 | markers | |
d9b3f62e | 13528 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13529 | |
13530 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13531 | { | |
80e1d417 | 13532 | struct symtab_and_line sal2; |
0fb4aa4b | 13533 | struct symbol *sym; |
80e1d417 | 13534 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13535 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 13536 | |
80e1d417 | 13537 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13538 | |
d9b3f62e | 13539 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13540 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13541 | |
13542 | warning (_("marker for static tracepoint %d (%s) not " | |
13543 | "found at previous line number"), | |
d9b3f62e | 13544 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13545 | |
80e1d417 | 13546 | init_sal (&sal2); |
0fb4aa4b | 13547 | |
80e1d417 | 13548 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13549 | |
80e1d417 AS |
13550 | sal2 = find_pc_line (tpmarker->address, 0); |
13551 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13552 | ui_out_text (uiout, "Now in "); |
13553 | if (sym) | |
13554 | { | |
13555 | ui_out_field_string (uiout, "func", | |
13556 | SYMBOL_PRINT_NAME (sym)); | |
13557 | ui_out_text (uiout, " at "); | |
13558 | } | |
80e1d417 | 13559 | ui_out_field_string (uiout, "file", sal2.symtab->filename); |
0fb4aa4b PA |
13560 | ui_out_text (uiout, ":"); |
13561 | ||
13562 | if (ui_out_is_mi_like_p (uiout)) | |
13563 | { | |
80e1d417 | 13564 | char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b PA |
13565 | |
13566 | if (fullname) | |
13567 | ui_out_field_string (uiout, "fullname", fullname); | |
13568 | } | |
13569 | ||
80e1d417 | 13570 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13571 | ui_out_text (uiout, "\n"); |
13572 | ||
80e1d417 | 13573 | b->loc->line_number = sal2.line; |
0fb4aa4b | 13574 | |
f8eba3c6 | 13575 | xfree (b->loc->source_file); |
0fb4aa4b | 13576 | if (sym) |
80e1d417 | 13577 | b->loc->source_file = xstrdup (sal2.symtab->filename); |
0fb4aa4b | 13578 | else |
f8eba3c6 | 13579 | b->loc->source_file = NULL; |
0fb4aa4b PA |
13580 | |
13581 | xfree (b->addr_string); | |
13582 | b->addr_string = xstrprintf ("%s:%d", | |
80e1d417 | 13583 | sal2.symtab->filename, |
f8eba3c6 | 13584 | b->loc->line_number); |
0fb4aa4b PA |
13585 | |
13586 | /* Might be nice to check if function changed, and warn if | |
13587 | so. */ | |
13588 | ||
80e1d417 | 13589 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13590 | } |
13591 | } | |
13592 | return sal; | |
13593 | } | |
13594 | ||
8d3788bd VP |
13595 | /* Returns 1 iff locations A and B are sufficiently same that |
13596 | we don't need to report breakpoint as changed. */ | |
13597 | ||
13598 | static int | |
13599 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13600 | { | |
13601 | while (a && b) | |
13602 | { | |
13603 | if (a->address != b->address) | |
13604 | return 0; | |
13605 | ||
13606 | if (a->shlib_disabled != b->shlib_disabled) | |
13607 | return 0; | |
13608 | ||
13609 | if (a->enabled != b->enabled) | |
13610 | return 0; | |
13611 | ||
13612 | a = a->next; | |
13613 | b = b->next; | |
13614 | } | |
13615 | ||
13616 | if ((a == NULL) != (b == NULL)) | |
13617 | return 0; | |
13618 | ||
13619 | return 1; | |
13620 | } | |
13621 | ||
f1310107 TJB |
13622 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
13623 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
13624 | a ranged breakpoint. */ | |
13625 | ||
0e30163f | 13626 | void |
0d381245 | 13627 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
13628 | struct symtabs_and_lines sals, |
13629 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
13630 | { |
13631 | int i; | |
0d381245 VP |
13632 | struct bp_location *existing_locations = b->loc; |
13633 | ||
f8eba3c6 TT |
13634 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
13635 | { | |
13636 | /* Ranged breakpoints have only one start location and one end | |
13637 | location. */ | |
13638 | b->enable_state = bp_disabled; | |
13639 | update_global_location_list (1); | |
13640 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
13641 | "multiple locations found\n"), | |
13642 | b->number); | |
13643 | return; | |
13644 | } | |
f1310107 | 13645 | |
4a64f543 MS |
13646 | /* If there's no new locations, and all existing locations are |
13647 | pending, don't do anything. This optimizes the common case where | |
13648 | all locations are in the same shared library, that was unloaded. | |
13649 | We'd like to retain the location, so that when the library is | |
13650 | loaded again, we don't loose the enabled/disabled status of the | |
13651 | individual locations. */ | |
0d381245 | 13652 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
13653 | return; |
13654 | ||
fe3f5fa8 VP |
13655 | b->loc = NULL; |
13656 | ||
0d381245 | 13657 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 13658 | { |
f8eba3c6 TT |
13659 | struct bp_location *new_loc; |
13660 | ||
13661 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
13662 | ||
13663 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 13664 | |
0d381245 VP |
13665 | /* Reparse conditions, they might contain references to the |
13666 | old symtab. */ | |
13667 | if (b->cond_string != NULL) | |
13668 | { | |
f1310107 | 13669 | char *s; |
bfd189b1 | 13670 | volatile struct gdb_exception e; |
fe3f5fa8 | 13671 | |
0d381245 VP |
13672 | s = b->cond_string; |
13673 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13674 | { | |
1bb9788d TT |
13675 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
13676 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
13677 | 0); |
13678 | } | |
13679 | if (e.reason < 0) | |
13680 | { | |
3e43a32a MS |
13681 | warning (_("failed to reevaluate condition " |
13682 | "for breakpoint %d: %s"), | |
0d381245 VP |
13683 | b->number, e.message); |
13684 | new_loc->enabled = 0; | |
13685 | } | |
13686 | } | |
fe3f5fa8 | 13687 | |
f1310107 TJB |
13688 | if (sals_end.nelts) |
13689 | { | |
13690 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
13691 | ||
13692 | new_loc->length = end - sals.sals[0].pc + 1; | |
13693 | } | |
0d381245 | 13694 | } |
fe3f5fa8 | 13695 | |
514f746b AR |
13696 | /* Update locations of permanent breakpoints. */ |
13697 | if (b->enable_state == bp_permanent) | |
13698 | make_breakpoint_permanent (b); | |
13699 | ||
4a64f543 MS |
13700 | /* If possible, carry over 'disable' status from existing |
13701 | breakpoints. */ | |
0d381245 VP |
13702 | { |
13703 | struct bp_location *e = existing_locations; | |
776592bf DE |
13704 | /* If there are multiple breakpoints with the same function name, |
13705 | e.g. for inline functions, comparing function names won't work. | |
13706 | Instead compare pc addresses; this is just a heuristic as things | |
13707 | may have moved, but in practice it gives the correct answer | |
13708 | often enough until a better solution is found. */ | |
13709 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13710 | ||
0d381245 VP |
13711 | for (; e; e = e->next) |
13712 | { | |
13713 | if (!e->enabled && e->function_name) | |
13714 | { | |
13715 | struct bp_location *l = b->loc; | |
776592bf DE |
13716 | if (have_ambiguous_names) |
13717 | { | |
13718 | for (; l; l = l->next) | |
f1310107 | 13719 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13720 | { |
13721 | l->enabled = 0; | |
13722 | break; | |
13723 | } | |
13724 | } | |
13725 | else | |
13726 | { | |
13727 | for (; l; l = l->next) | |
13728 | if (l->function_name | |
13729 | && strcmp (e->function_name, l->function_name) == 0) | |
13730 | { | |
13731 | l->enabled = 0; | |
13732 | break; | |
13733 | } | |
13734 | } | |
0d381245 VP |
13735 | } |
13736 | } | |
13737 | } | |
fe3f5fa8 | 13738 | |
8d3788bd VP |
13739 | if (!locations_are_equal (existing_locations, b->loc)) |
13740 | observer_notify_breakpoint_modified (b); | |
13741 | ||
b60e7edf | 13742 | update_global_location_list (1); |
fe3f5fa8 VP |
13743 | } |
13744 | ||
ef23e705 TJB |
13745 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
13746 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
13747 | ||
13748 | static struct symtabs_and_lines | |
13749 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
13750 | { | |
13751 | char *s; | |
02d20e4a | 13752 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 13753 | volatile struct gdb_exception e; |
ef23e705 | 13754 | |
983af33b | 13755 | gdb_assert (b->ops != NULL); |
ef23e705 | 13756 | s = addr_string; |
ef23e705 TJB |
13757 | |
13758 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13759 | { | |
983af33b | 13760 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
13761 | } |
13762 | if (e.reason < 0) | |
13763 | { | |
13764 | int not_found_and_ok = 0; | |
13765 | /* For pending breakpoints, it's expected that parsing will | |
13766 | fail until the right shared library is loaded. User has | |
13767 | already told to create pending breakpoints and don't need | |
13768 | extra messages. If breakpoint is in bp_shlib_disabled | |
13769 | state, then user already saw the message about that | |
13770 | breakpoint being disabled, and don't want to see more | |
13771 | errors. */ | |
58438ac1 | 13772 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
13773 | && (b->condition_not_parsed |
13774 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 13775 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13776 | || b->enable_state == bp_disabled)) |
13777 | not_found_and_ok = 1; | |
13778 | ||
13779 | if (!not_found_and_ok) | |
13780 | { | |
13781 | /* We surely don't want to warn about the same breakpoint | |
13782 | 10 times. One solution, implemented here, is disable | |
13783 | the breakpoint on error. Another solution would be to | |
13784 | have separate 'warning emitted' flag. Since this | |
13785 | happens only when a binary has changed, I don't know | |
13786 | which approach is better. */ | |
13787 | b->enable_state = bp_disabled; | |
13788 | throw_exception (e); | |
13789 | } | |
13790 | } | |
13791 | ||
58438ac1 | 13792 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 13793 | { |
f8eba3c6 | 13794 | int i; |
ef23e705 | 13795 | |
f8eba3c6 TT |
13796 | for (i = 0; i < sals.nelts; ++i) |
13797 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
13798 | if (b->condition_not_parsed && s && s[0]) |
13799 | { | |
13800 | char *cond_string = 0; | |
13801 | int thread = -1; | |
13802 | int task = 0; | |
e7e0cddf | 13803 | char *extra_string = NULL; |
ef23e705 TJB |
13804 | |
13805 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
13806 | &cond_string, &thread, &task, |
13807 | &extra_string); | |
ef23e705 TJB |
13808 | if (cond_string) |
13809 | b->cond_string = cond_string; | |
13810 | b->thread = thread; | |
13811 | b->task = task; | |
e7e0cddf SS |
13812 | if (extra_string) |
13813 | b->extra_string = extra_string; | |
ef23e705 TJB |
13814 | b->condition_not_parsed = 0; |
13815 | } | |
13816 | ||
983af33b | 13817 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 13818 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 13819 | |
58438ac1 TT |
13820 | *found = 1; |
13821 | } | |
13822 | else | |
13823 | *found = 0; | |
ef23e705 TJB |
13824 | |
13825 | return sals; | |
13826 | } | |
13827 | ||
348d480f PA |
13828 | /* The default re_set method, for typical hardware or software |
13829 | breakpoints. Reevaluate the breakpoint and recreate its | |
13830 | locations. */ | |
13831 | ||
13832 | static void | |
28010a5d | 13833 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
13834 | { |
13835 | int found; | |
f1310107 | 13836 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 13837 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 13838 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
13839 | |
13840 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
13841 | if (found) | |
13842 | { | |
13843 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 13844 | expanded = sals; |
ef23e705 TJB |
13845 | } |
13846 | ||
f1310107 TJB |
13847 | if (b->addr_string_range_end) |
13848 | { | |
13849 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
13850 | if (found) | |
13851 | { | |
13852 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 13853 | expanded_end = sals_end; |
f1310107 TJB |
13854 | } |
13855 | } | |
13856 | ||
13857 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
13858 | } |
13859 | ||
983af33b SDJ |
13860 | /* Default method for creating SALs from an address string. It basically |
13861 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13862 | ||
13863 | static void | |
13864 | create_sals_from_address_default (char **arg, | |
13865 | struct linespec_result *canonical, | |
13866 | enum bptype type_wanted, | |
13867 | char *addr_start, char **copy_arg) | |
13868 | { | |
13869 | parse_breakpoint_sals (arg, canonical); | |
13870 | } | |
13871 | ||
13872 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13873 | function for the `create_breakpoints_sal' method of | |
13874 | breakpoint_ops. */ | |
13875 | ||
13876 | static void | |
13877 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13878 | struct linespec_result *canonical, | |
13879 | struct linespec_sals *lsal, | |
13880 | char *cond_string, | |
e7e0cddf | 13881 | char *extra_string, |
983af33b SDJ |
13882 | enum bptype type_wanted, |
13883 | enum bpdisp disposition, | |
13884 | int thread, | |
13885 | int task, int ignore_count, | |
13886 | const struct breakpoint_ops *ops, | |
13887 | int from_tty, int enabled, | |
44f238bb | 13888 | int internal, unsigned flags) |
983af33b SDJ |
13889 | { |
13890 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 13891 | extra_string, |
983af33b SDJ |
13892 | type_wanted, disposition, |
13893 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13894 | enabled, internal, flags); |
983af33b SDJ |
13895 | } |
13896 | ||
13897 | /* Decode the line represented by S by calling decode_line_full. This is the | |
13898 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
13899 | ||
13900 | static void | |
13901 | decode_linespec_default (struct breakpoint *b, char **s, | |
13902 | struct symtabs_and_lines *sals) | |
13903 | { | |
13904 | struct linespec_result canonical; | |
13905 | ||
13906 | init_linespec_result (&canonical); | |
13907 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
13908 | (struct symtab *) NULL, 0, | |
13909 | &canonical, multiple_symbols_all, | |
13910 | b->filter); | |
13911 | ||
13912 | /* We should get 0 or 1 resulting SALs. */ | |
13913 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
13914 | ||
13915 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
13916 | { | |
13917 | struct linespec_sals *lsal; | |
13918 | ||
13919 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
13920 | *sals = lsal->sals; | |
13921 | /* Arrange it so the destructor does not free the | |
13922 | contents. */ | |
13923 | lsal->sals.sals = NULL; | |
13924 | } | |
13925 | ||
13926 | destroy_linespec_result (&canonical); | |
13927 | } | |
13928 | ||
28010a5d PA |
13929 | /* Prepare the global context for a re-set of breakpoint B. */ |
13930 | ||
13931 | static struct cleanup * | |
13932 | prepare_re_set_context (struct breakpoint *b) | |
13933 | { | |
13934 | struct cleanup *cleanups; | |
13935 | ||
13936 | input_radix = b->input_radix; | |
13937 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
13938 | if (b->pspace != NULL) |
13939 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
13940 | set_language (b->language); |
13941 | ||
13942 | return cleanups; | |
ef23e705 TJB |
13943 | } |
13944 | ||
c906108c SS |
13945 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
13946 | The value we return ends up being the return value from catch_errors. | |
13947 | Unused in this case. */ | |
13948 | ||
13949 | static int | |
4efb68b1 | 13950 | breakpoint_re_set_one (void *bint) |
c906108c | 13951 | { |
4a64f543 | 13952 | /* Get past catch_errs. */ |
53a5351d | 13953 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 13954 | struct cleanup *cleanups; |
c906108c | 13955 | |
348d480f PA |
13956 | cleanups = prepare_re_set_context (b); |
13957 | b->ops->re_set (b); | |
13958 | do_cleanups (cleanups); | |
c906108c SS |
13959 | return 0; |
13960 | } | |
13961 | ||
69de3c6a | 13962 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 13963 | void |
69de3c6a | 13964 | breakpoint_re_set (void) |
c906108c | 13965 | { |
35df4500 | 13966 | struct breakpoint *b, *b_tmp; |
c906108c SS |
13967 | enum language save_language; |
13968 | int save_input_radix; | |
6c95b8df | 13969 | struct cleanup *old_chain; |
c5aa993b | 13970 | |
c906108c SS |
13971 | save_language = current_language->la_language; |
13972 | save_input_radix = input_radix; | |
6c95b8df PA |
13973 | old_chain = save_current_program_space (); |
13974 | ||
35df4500 | 13975 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 13976 | { |
4a64f543 | 13977 | /* Format possible error msg. */ |
fe3f5fa8 | 13978 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
13979 | b->number); |
13980 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 13981 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 13982 | do_cleanups (cleanups); |
c5aa993b | 13983 | } |
c906108c SS |
13984 | set_language (save_language); |
13985 | input_radix = save_input_radix; | |
e62c965a | 13986 | |
0756c555 | 13987 | jit_breakpoint_re_set (); |
4efc6507 | 13988 | |
6c95b8df PA |
13989 | do_cleanups (old_chain); |
13990 | ||
af02033e PP |
13991 | create_overlay_event_breakpoint (); |
13992 | create_longjmp_master_breakpoint (); | |
13993 | create_std_terminate_master_breakpoint (); | |
186c406b | 13994 | create_exception_master_breakpoint (); |
1bfeeb0f JL |
13995 | |
13996 | /* While we're at it, reset the skip list too. */ | |
13997 | skip_re_set (); | |
c906108c SS |
13998 | } |
13999 | \f | |
c906108c SS |
14000 | /* Reset the thread number of this breakpoint: |
14001 | ||
14002 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14003 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14004 | void |
fba45db2 | 14005 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14006 | { |
14007 | if (b->thread != -1) | |
14008 | { | |
39f77062 KB |
14009 | if (in_thread_list (inferior_ptid)) |
14010 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14011 | |
14012 | /* We're being called after following a fork. The new fork is | |
14013 | selected as current, and unless this was a vfork will have a | |
14014 | different program space from the original thread. Reset that | |
14015 | as well. */ | |
14016 | b->loc->pspace = current_program_space; | |
c906108c SS |
14017 | } |
14018 | } | |
14019 | ||
03ac34d5 MS |
14020 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14021 | If from_tty is nonzero, it prints a message to that effect, | |
14022 | which ends with a period (no newline). */ | |
14023 | ||
c906108c | 14024 | void |
fba45db2 | 14025 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14026 | { |
52f0bd74 | 14027 | struct breakpoint *b; |
c906108c SS |
14028 | |
14029 | if (count < 0) | |
14030 | count = 0; | |
14031 | ||
14032 | ALL_BREAKPOINTS (b) | |
14033 | if (b->number == bptnum) | |
c5aa993b | 14034 | { |
d77f58be SS |
14035 | if (is_tracepoint (b)) |
14036 | { | |
14037 | if (from_tty && count != 0) | |
14038 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14039 | bptnum); | |
14040 | return; | |
14041 | } | |
14042 | ||
c5aa993b | 14043 | b->ignore_count = count; |
221ea385 KS |
14044 | if (from_tty) |
14045 | { | |
14046 | if (count == 0) | |
3e43a32a MS |
14047 | printf_filtered (_("Will stop next time " |
14048 | "breakpoint %d is reached."), | |
221ea385 KS |
14049 | bptnum); |
14050 | else if (count == 1) | |
a3f17187 | 14051 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14052 | bptnum); |
14053 | else | |
3e43a32a MS |
14054 | printf_filtered (_("Will ignore next %d " |
14055 | "crossings of breakpoint %d."), | |
221ea385 KS |
14056 | count, bptnum); |
14057 | } | |
c5aa993b | 14058 | breakpoints_changed (); |
8d3788bd | 14059 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14060 | return; |
14061 | } | |
c906108c | 14062 | |
8a3fe4f8 | 14063 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14064 | } |
14065 | ||
c906108c SS |
14066 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14067 | ||
14068 | static void | |
fba45db2 | 14069 | ignore_command (char *args, int from_tty) |
c906108c SS |
14070 | { |
14071 | char *p = args; | |
52f0bd74 | 14072 | int num; |
c906108c SS |
14073 | |
14074 | if (p == 0) | |
e2e0b3e5 | 14075 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14076 | |
c906108c | 14077 | num = get_number (&p); |
5c44784c | 14078 | if (num == 0) |
8a3fe4f8 | 14079 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14080 | if (*p == 0) |
8a3fe4f8 | 14081 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14082 | |
14083 | set_ignore_count (num, | |
14084 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14085 | from_tty); | |
221ea385 KS |
14086 | if (from_tty) |
14087 | printf_filtered ("\n"); | |
c906108c SS |
14088 | } |
14089 | \f | |
14090 | /* Call FUNCTION on each of the breakpoints | |
14091 | whose numbers are given in ARGS. */ | |
14092 | ||
14093 | static void | |
95a42b64 TT |
14094 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14095 | void *), | |
14096 | void *data) | |
c906108c | 14097 | { |
52f0bd74 AC |
14098 | int num; |
14099 | struct breakpoint *b, *tmp; | |
11cf8741 | 14100 | int match; |
197f0a60 | 14101 | struct get_number_or_range_state state; |
c906108c | 14102 | |
197f0a60 | 14103 | if (args == 0) |
e2e0b3e5 | 14104 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14105 | |
197f0a60 TT |
14106 | init_number_or_range (&state, args); |
14107 | ||
14108 | while (!state.finished) | |
c906108c | 14109 | { |
197f0a60 TT |
14110 | char *p = state.string; |
14111 | ||
11cf8741 | 14112 | match = 0; |
c5aa993b | 14113 | |
197f0a60 | 14114 | num = get_number_or_range (&state); |
5c44784c | 14115 | if (num == 0) |
c5aa993b | 14116 | { |
8a3fe4f8 | 14117 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14118 | } |
14119 | else | |
14120 | { | |
14121 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14122 | if (b->number == num) | |
14123 | { | |
11cf8741 | 14124 | match = 1; |
cdac0397 | 14125 | function (b, data); |
11cf8741 | 14126 | break; |
5c44784c | 14127 | } |
11cf8741 | 14128 | if (match == 0) |
a3f17187 | 14129 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14130 | } |
c906108c SS |
14131 | } |
14132 | } | |
14133 | ||
0d381245 VP |
14134 | static struct bp_location * |
14135 | find_location_by_number (char *number) | |
14136 | { | |
14137 | char *dot = strchr (number, '.'); | |
14138 | char *p1; | |
14139 | int bp_num; | |
14140 | int loc_num; | |
14141 | struct breakpoint *b; | |
14142 | struct bp_location *loc; | |
14143 | ||
14144 | *dot = '\0'; | |
14145 | ||
14146 | p1 = number; | |
197f0a60 | 14147 | bp_num = get_number (&p1); |
0d381245 VP |
14148 | if (bp_num == 0) |
14149 | error (_("Bad breakpoint number '%s'"), number); | |
14150 | ||
14151 | ALL_BREAKPOINTS (b) | |
14152 | if (b->number == bp_num) | |
14153 | { | |
14154 | break; | |
14155 | } | |
14156 | ||
14157 | if (!b || b->number != bp_num) | |
14158 | error (_("Bad breakpoint number '%s'"), number); | |
14159 | ||
14160 | p1 = dot+1; | |
197f0a60 | 14161 | loc_num = get_number (&p1); |
0d381245 VP |
14162 | if (loc_num == 0) |
14163 | error (_("Bad breakpoint location number '%s'"), number); | |
14164 | ||
14165 | --loc_num; | |
14166 | loc = b->loc; | |
14167 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14168 | ; | |
14169 | if (!loc) | |
14170 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14171 | ||
14172 | return loc; | |
14173 | } | |
14174 | ||
14175 | ||
1900040c MS |
14176 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14177 | If from_tty is nonzero, it prints a message to that effect, | |
14178 | which ends with a period (no newline). */ | |
14179 | ||
c906108c | 14180 | void |
fba45db2 | 14181 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14182 | { |
14183 | /* Never disable a watchpoint scope breakpoint; we want to | |
14184 | hit them when we leave scope so we can delete both the | |
14185 | watchpoint and its scope breakpoint at that time. */ | |
14186 | if (bpt->type == bp_watchpoint_scope) | |
14187 | return; | |
14188 | ||
c2c6d25f | 14189 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 14190 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
14191 | return; |
14192 | ||
b5de0fa7 | 14193 | bpt->enable_state = bp_disabled; |
c906108c | 14194 | |
b775012e LM |
14195 | /* Mark breakpoint locations modified. */ |
14196 | mark_breakpoint_modified (bpt); | |
14197 | ||
d248b706 KY |
14198 | if (target_supports_enable_disable_tracepoint () |
14199 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14200 | { | |
14201 | struct bp_location *location; | |
14202 | ||
14203 | for (location = bpt->loc; location; location = location->next) | |
14204 | target_disable_tracepoint (location); | |
14205 | } | |
14206 | ||
b60e7edf | 14207 | update_global_location_list (0); |
c906108c | 14208 | |
8d3788bd | 14209 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14210 | } |
14211 | ||
51be5b68 PA |
14212 | /* A callback for iterate_over_related_breakpoints. */ |
14213 | ||
14214 | static void | |
14215 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14216 | { | |
14217 | disable_breakpoint (b); | |
14218 | } | |
14219 | ||
95a42b64 TT |
14220 | /* A callback for map_breakpoint_numbers that calls |
14221 | disable_breakpoint. */ | |
14222 | ||
14223 | static void | |
14224 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14225 | { | |
51be5b68 | 14226 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14227 | } |
14228 | ||
c906108c | 14229 | static void |
fba45db2 | 14230 | disable_command (char *args, int from_tty) |
c906108c | 14231 | { |
c906108c | 14232 | if (args == 0) |
46c6471b PA |
14233 | { |
14234 | struct breakpoint *bpt; | |
14235 | ||
14236 | ALL_BREAKPOINTS (bpt) | |
14237 | if (user_breakpoint_p (bpt)) | |
14238 | disable_breakpoint (bpt); | |
14239 | } | |
0d381245 VP |
14240 | else if (strchr (args, '.')) |
14241 | { | |
14242 | struct bp_location *loc = find_location_by_number (args); | |
14243 | if (loc) | |
d248b706 | 14244 | { |
b775012e LM |
14245 | if (loc->enabled) |
14246 | { | |
14247 | loc->enabled = 0; | |
14248 | mark_breakpoint_location_modified (loc); | |
14249 | } | |
d248b706 KY |
14250 | if (target_supports_enable_disable_tracepoint () |
14251 | && current_trace_status ()->running && loc->owner | |
14252 | && is_tracepoint (loc->owner)) | |
14253 | target_disable_tracepoint (loc); | |
14254 | } | |
b60e7edf | 14255 | update_global_location_list (0); |
0d381245 | 14256 | } |
c906108c | 14257 | else |
95a42b64 | 14258 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
14259 | } |
14260 | ||
14261 | static void | |
816338b5 SS |
14262 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14263 | int count) | |
c906108c | 14264 | { |
afe38095 | 14265 | int target_resources_ok; |
c906108c SS |
14266 | |
14267 | if (bpt->type == bp_hardware_breakpoint) | |
14268 | { | |
14269 | int i; | |
c5aa993b | 14270 | i = hw_breakpoint_used_count (); |
53a5351d | 14271 | target_resources_ok = |
d92524f1 | 14272 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14273 | i + 1, 0); |
c906108c | 14274 | if (target_resources_ok == 0) |
8a3fe4f8 | 14275 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14276 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14277 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14278 | } |
14279 | ||
cc60f2e3 | 14280 | if (is_watchpoint (bpt)) |
c906108c | 14281 | { |
d07205c2 JK |
14282 | /* Initialize it just to avoid a GCC false warning. */ |
14283 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 14284 | volatile struct gdb_exception e; |
dde02812 ES |
14285 | |
14286 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 14287 | { |
3a5c3e22 PA |
14288 | struct watchpoint *w = (struct watchpoint *) bpt; |
14289 | ||
1e718ff1 TJB |
14290 | orig_enable_state = bpt->enable_state; |
14291 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14292 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14293 | } |
dde02812 | 14294 | if (e.reason < 0) |
c5aa993b | 14295 | { |
1e718ff1 | 14296 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14297 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14298 | bpt->number); | |
14299 | return; | |
c5aa993b | 14300 | } |
c906108c | 14301 | } |
0101ce28 | 14302 | |
b4c291bb KH |
14303 | if (bpt->enable_state != bp_permanent) |
14304 | bpt->enable_state = bp_enabled; | |
d248b706 | 14305 | |
b775012e LM |
14306 | bpt->enable_state = bp_enabled; |
14307 | ||
14308 | /* Mark breakpoint locations modified. */ | |
14309 | mark_breakpoint_modified (bpt); | |
14310 | ||
d248b706 KY |
14311 | if (target_supports_enable_disable_tracepoint () |
14312 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14313 | { | |
14314 | struct bp_location *location; | |
14315 | ||
14316 | for (location = bpt->loc; location; location = location->next) | |
14317 | target_enable_tracepoint (location); | |
14318 | } | |
14319 | ||
b4c291bb | 14320 | bpt->disposition = disposition; |
816338b5 | 14321 | bpt->enable_count = count; |
b60e7edf | 14322 | update_global_location_list (1); |
b4c291bb KH |
14323 | breakpoints_changed (); |
14324 | ||
8d3788bd | 14325 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14326 | } |
14327 | ||
fe3f5fa8 | 14328 | |
c906108c | 14329 | void |
fba45db2 | 14330 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14331 | { |
816338b5 | 14332 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14333 | } |
14334 | ||
14335 | static void | |
14336 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14337 | { | |
14338 | enable_breakpoint (bpt); | |
c906108c SS |
14339 | } |
14340 | ||
95a42b64 TT |
14341 | /* A callback for map_breakpoint_numbers that calls |
14342 | enable_breakpoint. */ | |
14343 | ||
14344 | static void | |
14345 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14346 | { | |
51be5b68 | 14347 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14348 | } |
14349 | ||
c906108c SS |
14350 | /* The enable command enables the specified breakpoints (or all defined |
14351 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14352 | in stopping the inferior. */ |
c906108c | 14353 | |
c906108c | 14354 | static void |
fba45db2 | 14355 | enable_command (char *args, int from_tty) |
c906108c | 14356 | { |
c906108c | 14357 | if (args == 0) |
46c6471b PA |
14358 | { |
14359 | struct breakpoint *bpt; | |
14360 | ||
14361 | ALL_BREAKPOINTS (bpt) | |
14362 | if (user_breakpoint_p (bpt)) | |
14363 | enable_breakpoint (bpt); | |
14364 | } | |
0d381245 VP |
14365 | else if (strchr (args, '.')) |
14366 | { | |
14367 | struct bp_location *loc = find_location_by_number (args); | |
14368 | if (loc) | |
d248b706 | 14369 | { |
b775012e LM |
14370 | if (!loc->enabled) |
14371 | { | |
14372 | loc->enabled = 1; | |
14373 | mark_breakpoint_location_modified (loc); | |
14374 | } | |
d248b706 KY |
14375 | if (target_supports_enable_disable_tracepoint () |
14376 | && current_trace_status ()->running && loc->owner | |
14377 | && is_tracepoint (loc->owner)) | |
14378 | target_enable_tracepoint (loc); | |
14379 | } | |
b60e7edf | 14380 | update_global_location_list (1); |
0d381245 | 14381 | } |
c906108c | 14382 | else |
95a42b64 | 14383 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
14384 | } |
14385 | ||
816338b5 SS |
14386 | /* This struct packages up disposition data for application to multiple |
14387 | breakpoints. */ | |
14388 | ||
14389 | struct disp_data | |
14390 | { | |
14391 | enum bpdisp disp; | |
14392 | int count; | |
14393 | }; | |
14394 | ||
c906108c | 14395 | static void |
51be5b68 PA |
14396 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14397 | { | |
816338b5 | 14398 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14399 | |
816338b5 | 14400 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14401 | } |
14402 | ||
14403 | static void | |
14404 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14405 | { |
816338b5 | 14406 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14407 | |
14408 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14409 | } |
14410 | ||
c906108c | 14411 | static void |
fba45db2 | 14412 | enable_once_command (char *args, int from_tty) |
c906108c | 14413 | { |
51be5b68 | 14414 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14415 | } |
14416 | ||
816338b5 SS |
14417 | static void |
14418 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14419 | { | |
14420 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14421 | ||
14422 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14423 | } | |
14424 | ||
14425 | static void | |
14426 | enable_count_command (char *args, int from_tty) | |
14427 | { | |
14428 | int count = get_number (&args); | |
14429 | ||
14430 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14431 | } | |
14432 | ||
c906108c | 14433 | static void |
51be5b68 | 14434 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14435 | { |
816338b5 | 14436 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14437 | |
14438 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14439 | } |
14440 | ||
c906108c | 14441 | static void |
fba45db2 | 14442 | enable_delete_command (char *args, int from_tty) |
c906108c | 14443 | { |
51be5b68 | 14444 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14445 | } |
14446 | \f | |
fa8d40ab JJ |
14447 | static void |
14448 | set_breakpoint_cmd (char *args, int from_tty) | |
14449 | { | |
14450 | } | |
14451 | ||
14452 | static void | |
14453 | show_breakpoint_cmd (char *args, int from_tty) | |
14454 | { | |
14455 | } | |
14456 | ||
1f3b5d1b PP |
14457 | /* Invalidate last known value of any hardware watchpoint if |
14458 | the memory which that value represents has been written to by | |
14459 | GDB itself. */ | |
14460 | ||
14461 | static void | |
14462 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
14463 | const bfd_byte *data) | |
14464 | { | |
14465 | struct breakpoint *bp; | |
14466 | ||
14467 | ALL_BREAKPOINTS (bp) | |
14468 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14469 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14470 | { |
3a5c3e22 | 14471 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14472 | |
3a5c3e22 PA |
14473 | if (wp->val_valid && wp->val) |
14474 | { | |
14475 | struct bp_location *loc; | |
14476 | ||
14477 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14478 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14479 | && loc->address + loc->length > addr | |
14480 | && addr + len > loc->address) | |
14481 | { | |
14482 | value_free (wp->val); | |
14483 | wp->val = NULL; | |
14484 | wp->val_valid = 0; | |
14485 | } | |
14486 | } | |
1f3b5d1b PP |
14487 | } |
14488 | } | |
14489 | ||
8181d85f DJ |
14490 | /* Create and insert a raw software breakpoint at PC. Return an |
14491 | identifier, which should be used to remove the breakpoint later. | |
14492 | In general, places which call this should be using something on the | |
14493 | breakpoint chain instead; this function should be eliminated | |
14494 | someday. */ | |
14495 | ||
14496 | void * | |
6c95b8df PA |
14497 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
14498 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
14499 | { |
14500 | struct bp_target_info *bp_tgt; | |
14501 | ||
6c95b8df | 14502 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 14503 | |
6c95b8df | 14504 | bp_tgt->placed_address_space = aspace; |
8181d85f | 14505 | bp_tgt->placed_address = pc; |
6c95b8df | 14506 | |
a6d9a66e | 14507 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
14508 | { |
14509 | /* Could not insert the breakpoint. */ | |
14510 | xfree (bp_tgt); | |
14511 | return NULL; | |
14512 | } | |
14513 | ||
14514 | return bp_tgt; | |
14515 | } | |
14516 | ||
4a64f543 MS |
14517 | /* Remove a breakpoint BP inserted by |
14518 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
14519 | |
14520 | int | |
a6d9a66e | 14521 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
14522 | { |
14523 | struct bp_target_info *bp_tgt = bp; | |
14524 | int ret; | |
14525 | ||
a6d9a66e | 14526 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
14527 | xfree (bp_tgt); |
14528 | ||
14529 | return ret; | |
14530 | } | |
14531 | ||
4a64f543 MS |
14532 | /* One (or perhaps two) breakpoints used for software single |
14533 | stepping. */ | |
8181d85f DJ |
14534 | |
14535 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 14536 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
14537 | |
14538 | /* Create and insert a breakpoint for software single step. */ | |
14539 | ||
14540 | void | |
6c95b8df | 14541 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14542 | struct address_space *aspace, |
14543 | CORE_ADDR next_pc) | |
8181d85f DJ |
14544 | { |
14545 | void **bpt_p; | |
14546 | ||
14547 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
14548 | { |
14549 | bpt_p = &single_step_breakpoints[0]; | |
14550 | single_step_gdbarch[0] = gdbarch; | |
14551 | } | |
8181d85f DJ |
14552 | else |
14553 | { | |
14554 | gdb_assert (single_step_breakpoints[1] == NULL); | |
14555 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 14556 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
14557 | } |
14558 | ||
4a64f543 MS |
14559 | /* NOTE drow/2006-04-11: A future improvement to this function would |
14560 | be to only create the breakpoints once, and actually put them on | |
14561 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
14562 | We could adjust the addresses each time they were needed. Doing | |
14563 | this requires corresponding changes elsewhere where single step | |
14564 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 14565 | |
6c95b8df | 14566 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 14567 | if (*bpt_p == NULL) |
5af949e3 UW |
14568 | error (_("Could not insert single-step breakpoint at %s"), |
14569 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
14570 | } |
14571 | ||
f02253f1 HZ |
14572 | /* Check if the breakpoints used for software single stepping |
14573 | were inserted or not. */ | |
14574 | ||
14575 | int | |
14576 | single_step_breakpoints_inserted (void) | |
14577 | { | |
14578 | return (single_step_breakpoints[0] != NULL | |
14579 | || single_step_breakpoints[1] != NULL); | |
14580 | } | |
14581 | ||
8181d85f DJ |
14582 | /* Remove and delete any breakpoints used for software single step. */ |
14583 | ||
14584 | void | |
14585 | remove_single_step_breakpoints (void) | |
14586 | { | |
14587 | gdb_assert (single_step_breakpoints[0] != NULL); | |
14588 | ||
14589 | /* See insert_single_step_breakpoint for more about this deprecated | |
14590 | call. */ | |
a6d9a66e UW |
14591 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
14592 | single_step_breakpoints[0]); | |
14593 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
14594 | single_step_breakpoints[0] = NULL; |
14595 | ||
14596 | if (single_step_breakpoints[1] != NULL) | |
14597 | { | |
a6d9a66e UW |
14598 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
14599 | single_step_breakpoints[1]); | |
14600 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
14601 | single_step_breakpoints[1] = NULL; |
14602 | } | |
14603 | } | |
14604 | ||
d03285ec UW |
14605 | /* Delete software single step breakpoints without removing them from |
14606 | the inferior. This is intended to be used if the inferior's address | |
14607 | space where they were inserted is already gone, e.g. after exit or | |
14608 | exec. */ | |
14609 | ||
14610 | void | |
14611 | cancel_single_step_breakpoints (void) | |
14612 | { | |
14613 | int i; | |
14614 | ||
14615 | for (i = 0; i < 2; i++) | |
14616 | if (single_step_breakpoints[i]) | |
14617 | { | |
14618 | xfree (single_step_breakpoints[i]); | |
14619 | single_step_breakpoints[i] = NULL; | |
14620 | single_step_gdbarch[i] = NULL; | |
14621 | } | |
14622 | } | |
14623 | ||
14624 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
14625 | removing them. */ | |
14626 | ||
14627 | static void | |
14628 | detach_single_step_breakpoints (void) | |
14629 | { | |
14630 | int i; | |
14631 | ||
14632 | for (i = 0; i < 2; i++) | |
14633 | if (single_step_breakpoints[i]) | |
14634 | target_remove_breakpoint (single_step_gdbarch[i], | |
14635 | single_step_breakpoints[i]); | |
14636 | } | |
14637 | ||
4a64f543 MS |
14638 | /* Check whether a software single-step breakpoint is inserted at |
14639 | PC. */ | |
1aafd4da UW |
14640 | |
14641 | static int | |
cc59ec59 MS |
14642 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
14643 | CORE_ADDR pc) | |
1aafd4da UW |
14644 | { |
14645 | int i; | |
14646 | ||
14647 | for (i = 0; i < 2; i++) | |
14648 | { | |
14649 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
14650 | if (bp_tgt |
14651 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
14652 | bp_tgt->placed_address, | |
14653 | aspace, pc)) | |
1aafd4da UW |
14654 | return 1; |
14655 | } | |
14656 | ||
14657 | return 0; | |
14658 | } | |
14659 | ||
a96d9b2e SDJ |
14660 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
14661 | non-zero otherwise. */ | |
14662 | static int | |
14663 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
14664 | { | |
14665 | if (syscall_catchpoint_p (bp) | |
14666 | && bp->enable_state != bp_disabled | |
14667 | && bp->enable_state != bp_call_disabled) | |
14668 | return 1; | |
14669 | else | |
14670 | return 0; | |
14671 | } | |
14672 | ||
14673 | int | |
14674 | catch_syscall_enabled (void) | |
14675 | { | |
fa3064dd YQ |
14676 | struct catch_syscall_inferior_data *inf_data |
14677 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 14678 | |
fa3064dd | 14679 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
14680 | } |
14681 | ||
14682 | int | |
14683 | catching_syscall_number (int syscall_number) | |
14684 | { | |
14685 | struct breakpoint *bp; | |
14686 | ||
14687 | ALL_BREAKPOINTS (bp) | |
14688 | if (is_syscall_catchpoint_enabled (bp)) | |
14689 | { | |
be5c67c1 PA |
14690 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
14691 | ||
14692 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
14693 | { |
14694 | int i, iter; | |
14695 | for (i = 0; | |
be5c67c1 | 14696 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
14697 | i++) |
14698 | if (syscall_number == iter) | |
14699 | return 1; | |
14700 | } | |
14701 | else | |
14702 | return 1; | |
14703 | } | |
14704 | ||
14705 | return 0; | |
14706 | } | |
14707 | ||
14708 | /* Complete syscall names. Used by "catch syscall". */ | |
49c4e619 | 14709 | static VEC (char_ptr) * |
a96d9b2e SDJ |
14710 | catch_syscall_completer (struct cmd_list_element *cmd, |
14711 | char *text, char *word) | |
14712 | { | |
14713 | const char **list = get_syscall_names (); | |
49c4e619 | 14714 | VEC (char_ptr) *retlist |
c38eea1a | 14715 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); |
cc59ec59 | 14716 | |
c38eea1a MS |
14717 | xfree (list); |
14718 | return retlist; | |
a96d9b2e SDJ |
14719 | } |
14720 | ||
1042e4c0 SS |
14721 | /* Tracepoint-specific operations. */ |
14722 | ||
14723 | /* Set tracepoint count to NUM. */ | |
14724 | static void | |
14725 | set_tracepoint_count (int num) | |
14726 | { | |
14727 | tracepoint_count = num; | |
4fa62494 | 14728 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14729 | } |
14730 | ||
70221824 | 14731 | static void |
1042e4c0 SS |
14732 | trace_command (char *arg, int from_tty) |
14733 | { | |
55aa24fb SDJ |
14734 | struct breakpoint_ops *ops; |
14735 | const char *arg_cp = arg; | |
14736 | ||
14737 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
14738 | ops = &tracepoint_probe_breakpoint_ops; | |
14739 | else | |
14740 | ops = &tracepoint_breakpoint_ops; | |
14741 | ||
8cdf0e15 VP |
14742 | if (create_breakpoint (get_current_arch (), |
14743 | arg, | |
e7e0cddf | 14744 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
14745 | 0 /* tempflag */, |
14746 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
14747 | 0 /* Ignore count */, |
14748 | pending_break_support, | |
55aa24fb | 14749 | ops, |
8cdf0e15 | 14750 | from_tty, |
84f4c1fe | 14751 | 1 /* enabled */, |
44f238bb | 14752 | 0 /* internal */, 0)) |
fd9b8c24 | 14753 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
14754 | } |
14755 | ||
70221824 | 14756 | static void |
7a697b8d SS |
14757 | ftrace_command (char *arg, int from_tty) |
14758 | { | |
8cdf0e15 VP |
14759 | if (create_breakpoint (get_current_arch (), |
14760 | arg, | |
e7e0cddf | 14761 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
14762 | 0 /* tempflag */, |
14763 | bp_fast_tracepoint /* type_wanted */, | |
14764 | 0 /* Ignore count */, | |
14765 | pending_break_support, | |
348d480f | 14766 | &tracepoint_breakpoint_ops, |
0fb4aa4b | 14767 | from_tty, |
84f4c1fe | 14768 | 1 /* enabled */, |
44f238bb | 14769 | 0 /* internal */, 0)) |
0fb4aa4b PA |
14770 | set_tracepoint_count (breakpoint_count); |
14771 | } | |
14772 | ||
14773 | /* strace command implementation. Creates a static tracepoint. */ | |
14774 | ||
70221824 | 14775 | static void |
0fb4aa4b PA |
14776 | strace_command (char *arg, int from_tty) |
14777 | { | |
983af33b SDJ |
14778 | struct breakpoint_ops *ops; |
14779 | ||
14780 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14781 | or with a normal static tracepoint. */ | |
14782 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
14783 | ops = &strace_marker_breakpoint_ops; | |
14784 | else | |
14785 | ops = &tracepoint_breakpoint_ops; | |
14786 | ||
0fb4aa4b PA |
14787 | if (create_breakpoint (get_current_arch (), |
14788 | arg, | |
e7e0cddf | 14789 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
14790 | 0 /* tempflag */, |
14791 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
14792 | 0 /* Ignore count */, |
14793 | pending_break_support, | |
983af33b | 14794 | ops, |
8cdf0e15 | 14795 | from_tty, |
84f4c1fe | 14796 | 1 /* enabled */, |
44f238bb | 14797 | 0 /* internal */, 0)) |
fd9b8c24 | 14798 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
14799 | } |
14800 | ||
409873ef SS |
14801 | /* Set up a fake reader function that gets command lines from a linked |
14802 | list that was acquired during tracepoint uploading. */ | |
14803 | ||
14804 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14805 | static int next_cmd; |
409873ef SS |
14806 | |
14807 | static char * | |
14808 | read_uploaded_action (void) | |
14809 | { | |
14810 | char *rslt; | |
14811 | ||
3149d8c1 | 14812 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 14813 | |
3149d8c1 | 14814 | next_cmd++; |
409873ef SS |
14815 | |
14816 | return rslt; | |
14817 | } | |
14818 | ||
00bf0b85 SS |
14819 | /* Given information about a tracepoint as recorded on a target (which |
14820 | can be either a live system or a trace file), attempt to create an | |
14821 | equivalent GDB tracepoint. This is not a reliable process, since | |
14822 | the target does not necessarily have all the information used when | |
14823 | the tracepoint was originally defined. */ | |
14824 | ||
d9b3f62e | 14825 | struct tracepoint * |
00bf0b85 | 14826 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14827 | { |
409873ef | 14828 | char *addr_str, small_buf[100]; |
d9b3f62e | 14829 | struct tracepoint *tp; |
fd9b8c24 | 14830 | |
409873ef SS |
14831 | if (utp->at_string) |
14832 | addr_str = utp->at_string; | |
14833 | else | |
14834 | { | |
14835 | /* In the absence of a source location, fall back to raw | |
14836 | address. Since there is no way to confirm that the address | |
14837 | means the same thing as when the trace was started, warn the | |
14838 | user. */ | |
3e43a32a MS |
14839 | warning (_("Uploaded tracepoint %d has no " |
14840 | "source location, using raw address"), | |
409873ef SS |
14841 | utp->number); |
14842 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
14843 | addr_str = small_buf; | |
14844 | } | |
14845 | ||
14846 | /* There's not much we can do with a sequence of bytecodes. */ | |
14847 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14848 | warning (_("Uploaded tracepoint %d condition " |
14849 | "has no source form, ignoring it"), | |
409873ef | 14850 | utp->number); |
d5551862 | 14851 | |
8cdf0e15 | 14852 | if (!create_breakpoint (get_current_arch (), |
409873ef | 14853 | addr_str, |
e7e0cddf SS |
14854 | utp->cond_string, -1, NULL, |
14855 | 0 /* parse cond/thread */, | |
8cdf0e15 | 14856 | 0 /* tempflag */, |
0fb4aa4b | 14857 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14858 | 0 /* Ignore count */, |
14859 | pending_break_support, | |
348d480f | 14860 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14861 | 0 /* from_tty */, |
84f4c1fe | 14862 | utp->enabled /* enabled */, |
44f238bb PA |
14863 | 0 /* internal */, |
14864 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
14865 | return NULL; |
14866 | ||
00bf0b85 SS |
14867 | set_tracepoint_count (breakpoint_count); |
14868 | ||
409873ef | 14869 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14870 | tp = get_tracepoint (tracepoint_count); |
14871 | gdb_assert (tp != NULL); | |
d5551862 | 14872 | |
00bf0b85 SS |
14873 | if (utp->pass > 0) |
14874 | { | |
d9b3f62e | 14875 | sprintf (small_buf, "%d %d", utp->pass, tp->base.number); |
00bf0b85 | 14876 | |
409873ef | 14877 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14878 | } |
14879 | ||
409873ef SS |
14880 | /* If we have uploaded versions of the original commands, set up a |
14881 | special-purpose "reader" function and call the usual command line | |
14882 | reader, then pass the result to the breakpoint command-setting | |
14883 | function. */ | |
3149d8c1 | 14884 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 14885 | { |
409873ef | 14886 | struct command_line *cmd_list; |
00bf0b85 | 14887 | |
409873ef | 14888 | this_utp = utp; |
3149d8c1 | 14889 | next_cmd = 0; |
d5551862 | 14890 | |
409873ef SS |
14891 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14892 | ||
d9b3f62e | 14893 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 14894 | } |
3149d8c1 SS |
14895 | else if (!VEC_empty (char_ptr, utp->actions) |
14896 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
14897 | warning (_("Uploaded tracepoint %d actions " |
14898 | "have no source form, ignoring them"), | |
409873ef | 14899 | utp->number); |
00bf0b85 | 14900 | |
f196051f SS |
14901 | /* Copy any status information that might be available. */ |
14902 | tp->base.hit_count = utp->hit_count; | |
14903 | tp->traceframe_usage = utp->traceframe_usage; | |
14904 | ||
00bf0b85 | 14905 | return tp; |
d9b3f62e | 14906 | } |
00bf0b85 | 14907 | |
1042e4c0 SS |
14908 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14909 | omitted. */ | |
14910 | ||
14911 | static void | |
e5a67952 | 14912 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 14913 | { |
79a45e25 | 14914 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14915 | int num_printed; |
1042e4c0 | 14916 | |
e5a67952 | 14917 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14918 | |
14919 | if (num_printed == 0) | |
1042e4c0 | 14920 | { |
e5a67952 | 14921 | if (args == NULL || *args == '\0') |
d77f58be SS |
14922 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
14923 | else | |
e5a67952 | 14924 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14925 | } |
ad443146 SS |
14926 | |
14927 | default_collect_info (); | |
1042e4c0 SS |
14928 | } |
14929 | ||
4a64f543 | 14930 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14931 | Not supported by all targets. */ |
14932 | static void | |
14933 | enable_trace_command (char *args, int from_tty) | |
14934 | { | |
14935 | enable_command (args, from_tty); | |
14936 | } | |
14937 | ||
4a64f543 | 14938 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14939 | Not supported by all targets. */ |
14940 | static void | |
14941 | disable_trace_command (char *args, int from_tty) | |
14942 | { | |
14943 | disable_command (args, from_tty); | |
14944 | } | |
14945 | ||
4a64f543 | 14946 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
14947 | static void |
14948 | delete_trace_command (char *arg, int from_tty) | |
14949 | { | |
35df4500 | 14950 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14951 | |
14952 | dont_repeat (); | |
14953 | ||
14954 | if (arg == 0) | |
14955 | { | |
14956 | int breaks_to_delete = 0; | |
14957 | ||
14958 | /* Delete all breakpoints if no argument. | |
14959 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14960 | have to be deleted with an explicit breakpoint number |
14961 | argument. */ | |
1042e4c0 | 14962 | ALL_TRACEPOINTS (b) |
46c6471b | 14963 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14964 | { |
14965 | breaks_to_delete = 1; | |
14966 | break; | |
14967 | } | |
1042e4c0 SS |
14968 | |
14969 | /* Ask user only if there are some breakpoints to delete. */ | |
14970 | if (!from_tty | |
14971 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14972 | { | |
35df4500 | 14973 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14974 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14975 | delete_breakpoint (b); |
1042e4c0 SS |
14976 | } |
14977 | } | |
14978 | else | |
51be5b68 | 14979 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
14980 | } |
14981 | ||
197f0a60 TT |
14982 | /* Helper function for trace_pass_command. */ |
14983 | ||
14984 | static void | |
d9b3f62e | 14985 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14986 | { |
d9b3f62e PA |
14987 | tp->pass_count = count; |
14988 | observer_notify_tracepoint_modified (tp->base.number); | |
197f0a60 TT |
14989 | if (from_tty) |
14990 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 14991 | tp->base.number, count); |
197f0a60 TT |
14992 | } |
14993 | ||
1042e4c0 SS |
14994 | /* Set passcount for tracepoint. |
14995 | ||
14996 | First command argument is passcount, second is tracepoint number. | |
14997 | If tracepoint number omitted, apply to most recently defined. | |
14998 | Also accepts special argument "all". */ | |
14999 | ||
15000 | static void | |
15001 | trace_pass_command (char *args, int from_tty) | |
15002 | { | |
d9b3f62e | 15003 | struct tracepoint *t1; |
1042e4c0 | 15004 | unsigned int count; |
1042e4c0 SS |
15005 | |
15006 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15007 | error (_("passcount command requires an " |
15008 | "argument (count + optional TP num)")); | |
1042e4c0 | 15009 | |
4a64f543 | 15010 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
15011 | |
15012 | while (*args && isspace ((int) *args)) | |
15013 | args++; | |
15014 | ||
15015 | if (*args && strncasecmp (args, "all", 3) == 0) | |
15016 | { | |
d9b3f62e PA |
15017 | struct breakpoint *b; |
15018 | ||
1042e4c0 | 15019 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15020 | if (*args) |
15021 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15022 | |
d9b3f62e | 15023 | ALL_TRACEPOINTS (b) |
197f0a60 | 15024 | { |
d9b3f62e | 15025 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15026 | trace_pass_set_count (t1, count, from_tty); |
15027 | } | |
15028 | } | |
15029 | else if (*args == '\0') | |
1042e4c0 | 15030 | { |
197f0a60 | 15031 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 15032 | if (t1) |
197f0a60 TT |
15033 | trace_pass_set_count (t1, count, from_tty); |
15034 | } | |
15035 | else | |
15036 | { | |
15037 | struct get_number_or_range_state state; | |
15038 | ||
15039 | init_number_or_range (&state, args); | |
15040 | while (!state.finished) | |
1042e4c0 | 15041 | { |
197f0a60 TT |
15042 | t1 = get_tracepoint_by_number (&args, &state, 1); |
15043 | if (t1) | |
15044 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15045 | } |
15046 | } | |
1042e4c0 SS |
15047 | } |
15048 | ||
d9b3f62e | 15049 | struct tracepoint * |
1042e4c0 SS |
15050 | get_tracepoint (int num) |
15051 | { | |
15052 | struct breakpoint *t; | |
15053 | ||
15054 | ALL_TRACEPOINTS (t) | |
15055 | if (t->number == num) | |
d9b3f62e | 15056 | return (struct tracepoint *) t; |
1042e4c0 SS |
15057 | |
15058 | return NULL; | |
15059 | } | |
15060 | ||
d5551862 SS |
15061 | /* Find the tracepoint with the given target-side number (which may be |
15062 | different from the tracepoint number after disconnecting and | |
15063 | reconnecting). */ | |
15064 | ||
d9b3f62e | 15065 | struct tracepoint * |
d5551862 SS |
15066 | get_tracepoint_by_number_on_target (int num) |
15067 | { | |
d9b3f62e | 15068 | struct breakpoint *b; |
d5551862 | 15069 | |
d9b3f62e PA |
15070 | ALL_TRACEPOINTS (b) |
15071 | { | |
15072 | struct tracepoint *t = (struct tracepoint *) b; | |
15073 | ||
15074 | if (t->number_on_target == num) | |
15075 | return t; | |
15076 | } | |
d5551862 SS |
15077 | |
15078 | return NULL; | |
15079 | } | |
15080 | ||
1042e4c0 | 15081 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
15082 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
15083 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 15084 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 15085 | struct tracepoint * |
197f0a60 TT |
15086 | get_tracepoint_by_number (char **arg, |
15087 | struct get_number_or_range_state *state, | |
15088 | int optional_p) | |
1042e4c0 SS |
15089 | { |
15090 | extern int tracepoint_count; | |
15091 | struct breakpoint *t; | |
15092 | int tpnum; | |
15093 | char *instring = arg == NULL ? NULL : *arg; | |
15094 | ||
197f0a60 TT |
15095 | if (state) |
15096 | { | |
15097 | gdb_assert (!state->finished); | |
15098 | tpnum = get_number_or_range (state); | |
15099 | } | |
15100 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
15101 | { |
15102 | if (optional_p) | |
15103 | tpnum = tracepoint_count; | |
15104 | else | |
15105 | error_no_arg (_("tracepoint number")); | |
15106 | } | |
15107 | else | |
197f0a60 | 15108 | tpnum = get_number (arg); |
1042e4c0 SS |
15109 | |
15110 | if (tpnum <= 0) | |
15111 | { | |
15112 | if (instring && *instring) | |
15113 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15114 | instring); | |
15115 | else | |
3e43a32a MS |
15116 | printf_filtered (_("Tracepoint argument missing " |
15117 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
15118 | return NULL; |
15119 | } | |
15120 | ||
15121 | ALL_TRACEPOINTS (t) | |
15122 | if (t->number == tpnum) | |
15123 | { | |
d9b3f62e | 15124 | return (struct tracepoint *) t; |
1042e4c0 SS |
15125 | } |
15126 | ||
1042e4c0 SS |
15127 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15128 | return NULL; | |
15129 | } | |
15130 | ||
d9b3f62e PA |
15131 | void |
15132 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15133 | { | |
15134 | if (b->thread != -1) | |
15135 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15136 | ||
15137 | if (b->task != 0) | |
15138 | fprintf_unfiltered (fp, " task %d", b->task); | |
15139 | ||
15140 | fprintf_unfiltered (fp, "\n"); | |
15141 | } | |
15142 | ||
6149aea9 PA |
15143 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15144 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15145 | on each breakpoint and only include the ones for which it returns | |
15146 | non-zero. */ | |
15147 | ||
1042e4c0 | 15148 | static void |
6149aea9 PA |
15149 | save_breakpoints (char *filename, int from_tty, |
15150 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15151 | { |
15152 | struct breakpoint *tp; | |
6149aea9 | 15153 | int any = 0; |
a7bdde9e | 15154 | char *pathname; |
1042e4c0 | 15155 | struct cleanup *cleanup; |
a7bdde9e | 15156 | struct ui_file *fp; |
6149aea9 | 15157 | int extra_trace_bits = 0; |
1042e4c0 | 15158 | |
6149aea9 PA |
15159 | if (filename == 0 || *filename == 0) |
15160 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15161 | |
15162 | /* See if we have anything to save. */ | |
6149aea9 | 15163 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15164 | { |
6149aea9 | 15165 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15166 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15167 | continue; |
15168 | ||
15169 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15170 | if (filter && !filter (tp)) | |
15171 | continue; | |
15172 | ||
15173 | any = 1; | |
15174 | ||
15175 | if (is_tracepoint (tp)) | |
15176 | { | |
15177 | extra_trace_bits = 1; | |
15178 | ||
15179 | /* We can stop searching. */ | |
15180 | break; | |
15181 | } | |
1042e4c0 | 15182 | } |
6149aea9 PA |
15183 | |
15184 | if (!any) | |
1042e4c0 | 15185 | { |
6149aea9 | 15186 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15187 | return; |
15188 | } | |
15189 | ||
6149aea9 | 15190 | pathname = tilde_expand (filename); |
1042e4c0 | 15191 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 15192 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 15193 | if (!fp) |
6149aea9 PA |
15194 | error (_("Unable to open file '%s' for saving (%s)"), |
15195 | filename, safe_strerror (errno)); | |
a7bdde9e | 15196 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15197 | |
6149aea9 PA |
15198 | if (extra_trace_bits) |
15199 | save_trace_state_variables (fp); | |
8bf6485c | 15200 | |
6149aea9 | 15201 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15202 | { |
6149aea9 | 15203 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15204 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15205 | continue; |
8bf6485c | 15206 | |
6149aea9 PA |
15207 | /* If we have a filter, only save the breakpoints it accepts. */ |
15208 | if (filter && !filter (tp)) | |
15209 | continue; | |
15210 | ||
348d480f | 15211 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15212 | |
6149aea9 PA |
15213 | /* Note, we can't rely on tp->number for anything, as we can't |
15214 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15215 | instead. */ | |
15216 | ||
15217 | if (tp->cond_string) | |
15218 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15219 | ||
15220 | if (tp->ignore_count) | |
15221 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15222 | ||
a7bdde9e | 15223 | if (tp->commands) |
1042e4c0 | 15224 | { |
a7bdde9e VP |
15225 | volatile struct gdb_exception ex; |
15226 | ||
6149aea9 | 15227 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15228 | |
79a45e25 | 15229 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 15230 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 15231 | { |
79a45e25 | 15232 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15233 | } |
79a45e25 | 15234 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 15235 | |
a7bdde9e VP |
15236 | if (ex.reason < 0) |
15237 | throw_exception (ex); | |
1042e4c0 | 15238 | |
a7bdde9e | 15239 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15240 | } |
6149aea9 PA |
15241 | |
15242 | if (tp->enable_state == bp_disabled) | |
15243 | fprintf_unfiltered (fp, "disable\n"); | |
15244 | ||
15245 | /* If this is a multi-location breakpoint, check if the locations | |
15246 | should be individually disabled. Watchpoint locations are | |
15247 | special, and not user visible. */ | |
15248 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15249 | { | |
15250 | struct bp_location *loc; | |
15251 | int n = 1; | |
15252 | ||
15253 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15254 | if (!loc->enabled) | |
15255 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15256 | } | |
1042e4c0 | 15257 | } |
8bf6485c | 15258 | |
6149aea9 | 15259 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15260 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15261 | ||
1042e4c0 SS |
15262 | do_cleanups (cleanup); |
15263 | if (from_tty) | |
6149aea9 PA |
15264 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
15265 | } | |
15266 | ||
15267 | /* The `save breakpoints' command. */ | |
15268 | ||
15269 | static void | |
15270 | save_breakpoints_command (char *args, int from_tty) | |
15271 | { | |
15272 | save_breakpoints (args, from_tty, NULL); | |
15273 | } | |
15274 | ||
15275 | /* The `save tracepoints' command. */ | |
15276 | ||
15277 | static void | |
15278 | save_tracepoints_command (char *args, int from_tty) | |
15279 | { | |
15280 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15281 | } |
15282 | ||
15283 | /* Create a vector of all tracepoints. */ | |
15284 | ||
15285 | VEC(breakpoint_p) * | |
eeae04df | 15286 | all_tracepoints (void) |
1042e4c0 SS |
15287 | { |
15288 | VEC(breakpoint_p) *tp_vec = 0; | |
15289 | struct breakpoint *tp; | |
15290 | ||
15291 | ALL_TRACEPOINTS (tp) | |
15292 | { | |
15293 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15294 | } | |
15295 | ||
15296 | return tp_vec; | |
15297 | } | |
15298 | ||
c906108c | 15299 | \f |
4a64f543 MS |
15300 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15301 | commands. It is defined as a macro to prevent duplication. | |
15302 | COMMAND should be a string constant containing the name of the | |
15303 | command. */ | |
31e2b00f | 15304 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15305 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15306 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15307 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
15308 | guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\ | |
31e2b00f AS |
15309 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15310 | If a line number is specified, break at start of code for that line.\n\ | |
15311 | If a function is specified, break at start of code for that function.\n\ | |
15312 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15313 | With no LOCATION, uses current execution address of the selected\n\ |
15314 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15315 | \n\ |
15316 | THREADNUM is the number from \"info threads\".\n\ | |
15317 | CONDITION is a boolean expression.\n\ | |
15318 | \n\ | |
d41c0fc8 PA |
15319 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15320 | conditions are different.\n\ | |
31e2b00f AS |
15321 | \n\ |
15322 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15323 | ||
44feb3ce TT |
15324 | /* List of subcommands for "catch". */ |
15325 | static struct cmd_list_element *catch_cmdlist; | |
15326 | ||
15327 | /* List of subcommands for "tcatch". */ | |
15328 | static struct cmd_list_element *tcatch_cmdlist; | |
15329 | ||
9ac4176b | 15330 | void |
44feb3ce TT |
15331 | add_catch_command (char *name, char *docstring, |
15332 | void (*sfunc) (char *args, int from_tty, | |
15333 | struct cmd_list_element *command), | |
625e8578 | 15334 | completer_ftype *completer, |
44feb3ce TT |
15335 | void *user_data_catch, |
15336 | void *user_data_tcatch) | |
15337 | { | |
15338 | struct cmd_list_element *command; | |
15339 | ||
15340 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15341 | &catch_cmdlist); | |
15342 | set_cmd_sfunc (command, sfunc); | |
15343 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15344 | set_cmd_completer (command, completer); |
44feb3ce TT |
15345 | |
15346 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15347 | &tcatch_cmdlist); | |
15348 | set_cmd_sfunc (command, sfunc); | |
15349 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15350 | set_cmd_completer (command, completer); |
44feb3ce TT |
15351 | } |
15352 | ||
6c95b8df | 15353 | static void |
a79b8f6e | 15354 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 15355 | { |
fa3064dd YQ |
15356 | struct catch_syscall_inferior_data *inf_data |
15357 | = get_catch_syscall_inferior_data (inf); | |
15358 | ||
15359 | inf_data->total_syscalls_count = 0; | |
15360 | inf_data->any_syscall_count = 0; | |
15361 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
15362 | } |
15363 | ||
6149aea9 PA |
15364 | static void |
15365 | save_command (char *arg, int from_tty) | |
15366 | { | |
3e43a32a MS |
15367 | printf_unfiltered (_("\"save\" must be followed by " |
15368 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
15369 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
15370 | } | |
15371 | ||
84f4c1fe PM |
15372 | struct breakpoint * |
15373 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15374 | void *data) | |
15375 | { | |
35df4500 | 15376 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15377 | |
35df4500 | 15378 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15379 | { |
15380 | if ((*callback) (b, data)) | |
15381 | return b; | |
15382 | } | |
15383 | ||
15384 | return NULL; | |
15385 | } | |
15386 | ||
0574c78f GB |
15387 | /* Zero if any of the breakpoint's locations could be a location where |
15388 | functions have been inlined, nonzero otherwise. */ | |
15389 | ||
15390 | static int | |
15391 | is_non_inline_function (struct breakpoint *b) | |
15392 | { | |
15393 | /* The shared library event breakpoint is set on the address of a | |
15394 | non-inline function. */ | |
15395 | if (b->type == bp_shlib_event) | |
15396 | return 1; | |
15397 | ||
15398 | return 0; | |
15399 | } | |
15400 | ||
15401 | /* Nonzero if the specified PC cannot be a location where functions | |
15402 | have been inlined. */ | |
15403 | ||
15404 | int | |
09ac7c10 TT |
15405 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15406 | const struct target_waitstatus *ws) | |
0574c78f GB |
15407 | { |
15408 | struct breakpoint *b; | |
15409 | struct bp_location *bl; | |
15410 | ||
15411 | ALL_BREAKPOINTS (b) | |
15412 | { | |
15413 | if (!is_non_inline_function (b)) | |
15414 | continue; | |
15415 | ||
15416 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15417 | { | |
15418 | if (!bl->shlib_disabled | |
09ac7c10 | 15419 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15420 | return 1; |
15421 | } | |
15422 | } | |
15423 | ||
15424 | return 0; | |
15425 | } | |
15426 | ||
2060206e PA |
15427 | void |
15428 | initialize_breakpoint_ops (void) | |
15429 | { | |
15430 | static int initialized = 0; | |
15431 | ||
15432 | struct breakpoint_ops *ops; | |
15433 | ||
15434 | if (initialized) | |
15435 | return; | |
15436 | initialized = 1; | |
15437 | ||
15438 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15439 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15440 | internal and momentary breakpoints, etc.). */ | |
15441 | ops = &bkpt_base_breakpoint_ops; | |
15442 | *ops = base_breakpoint_ops; | |
15443 | ops->re_set = bkpt_re_set; | |
15444 | ops->insert_location = bkpt_insert_location; | |
15445 | ops->remove_location = bkpt_remove_location; | |
15446 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
15447 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
15448 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
15449 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
15450 | |
15451 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15452 | ops = &bkpt_breakpoint_ops; | |
15453 | *ops = bkpt_base_breakpoint_ops; | |
15454 | ops->re_set = bkpt_re_set; | |
15455 | ops->resources_needed = bkpt_resources_needed; | |
15456 | ops->print_it = bkpt_print_it; | |
15457 | ops->print_mention = bkpt_print_mention; | |
15458 | ops->print_recreate = bkpt_print_recreate; | |
15459 | ||
15460 | /* Ranged breakpoints. */ | |
15461 | ops = &ranged_breakpoint_ops; | |
15462 | *ops = bkpt_breakpoint_ops; | |
15463 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15464 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15465 | ops->print_it = print_it_ranged_breakpoint; | |
15466 | ops->print_one = print_one_ranged_breakpoint; | |
15467 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15468 | ops->print_mention = print_mention_ranged_breakpoint; | |
15469 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15470 | ||
15471 | /* Internal breakpoints. */ | |
15472 | ops = &internal_breakpoint_ops; | |
15473 | *ops = bkpt_base_breakpoint_ops; | |
15474 | ops->re_set = internal_bkpt_re_set; | |
15475 | ops->check_status = internal_bkpt_check_status; | |
15476 | ops->print_it = internal_bkpt_print_it; | |
15477 | ops->print_mention = internal_bkpt_print_mention; | |
15478 | ||
15479 | /* Momentary breakpoints. */ | |
15480 | ops = &momentary_breakpoint_ops; | |
15481 | *ops = bkpt_base_breakpoint_ops; | |
15482 | ops->re_set = momentary_bkpt_re_set; | |
15483 | ops->check_status = momentary_bkpt_check_status; | |
15484 | ops->print_it = momentary_bkpt_print_it; | |
15485 | ops->print_mention = momentary_bkpt_print_mention; | |
15486 | ||
e2e4d78b JK |
15487 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15488 | ops = &longjmp_breakpoint_ops; | |
15489 | *ops = momentary_breakpoint_ops; | |
15490 | ops->dtor = longjmp_bkpt_dtor; | |
15491 | ||
55aa24fb SDJ |
15492 | /* Probe breakpoints. */ |
15493 | ops = &bkpt_probe_breakpoint_ops; | |
15494 | *ops = bkpt_breakpoint_ops; | |
15495 | ops->insert_location = bkpt_probe_insert_location; | |
15496 | ops->remove_location = bkpt_probe_remove_location; | |
15497 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
15498 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
15499 | ||
2060206e PA |
15500 | /* GNU v3 exception catchpoints. */ |
15501 | ops = &gnu_v3_exception_catchpoint_ops; | |
15502 | *ops = bkpt_breakpoint_ops; | |
15503 | ops->print_it = print_it_exception_catchpoint; | |
15504 | ops->print_one = print_one_exception_catchpoint; | |
15505 | ops->print_mention = print_mention_exception_catchpoint; | |
15506 | ops->print_recreate = print_recreate_exception_catchpoint; | |
15507 | ||
15508 | /* Watchpoints. */ | |
15509 | ops = &watchpoint_breakpoint_ops; | |
15510 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15511 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15512 | ops->re_set = re_set_watchpoint; |
15513 | ops->insert_location = insert_watchpoint; | |
15514 | ops->remove_location = remove_watchpoint; | |
15515 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15516 | ops->check_status = check_status_watchpoint; | |
15517 | ops->resources_needed = resources_needed_watchpoint; | |
15518 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15519 | ops->print_it = print_it_watchpoint; | |
15520 | ops->print_mention = print_mention_watchpoint; | |
15521 | ops->print_recreate = print_recreate_watchpoint; | |
15522 | ||
15523 | /* Masked watchpoints. */ | |
15524 | ops = &masked_watchpoint_breakpoint_ops; | |
15525 | *ops = watchpoint_breakpoint_ops; | |
15526 | ops->insert_location = insert_masked_watchpoint; | |
15527 | ops->remove_location = remove_masked_watchpoint; | |
15528 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15529 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15530 | ops->print_it = print_it_masked_watchpoint; | |
15531 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15532 | ops->print_mention = print_mention_masked_watchpoint; | |
15533 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15534 | ||
15535 | /* Tracepoints. */ | |
15536 | ops = &tracepoint_breakpoint_ops; | |
15537 | *ops = base_breakpoint_ops; | |
15538 | ops->re_set = tracepoint_re_set; | |
15539 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15540 | ops->print_one_detail = tracepoint_print_one_detail; | |
15541 | ops->print_mention = tracepoint_print_mention; | |
15542 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
15543 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
15544 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
15545 | ops->decode_linespec = tracepoint_decode_linespec; | |
15546 | ||
55aa24fb SDJ |
15547 | /* Probe tracepoints. */ |
15548 | ops = &tracepoint_probe_breakpoint_ops; | |
15549 | *ops = tracepoint_breakpoint_ops; | |
15550 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
15551 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
15552 | ||
983af33b SDJ |
15553 | /* Static tracepoints with marker (`-m'). */ |
15554 | ops = &strace_marker_breakpoint_ops; | |
15555 | *ops = tracepoint_breakpoint_ops; | |
15556 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
15557 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
15558 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
15559 | |
15560 | /* Fork catchpoints. */ | |
15561 | ops = &catch_fork_breakpoint_ops; | |
15562 | *ops = base_breakpoint_ops; | |
15563 | ops->insert_location = insert_catch_fork; | |
15564 | ops->remove_location = remove_catch_fork; | |
15565 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15566 | ops->print_it = print_it_catch_fork; | |
15567 | ops->print_one = print_one_catch_fork; | |
15568 | ops->print_mention = print_mention_catch_fork; | |
15569 | ops->print_recreate = print_recreate_catch_fork; | |
15570 | ||
15571 | /* Vfork catchpoints. */ | |
15572 | ops = &catch_vfork_breakpoint_ops; | |
15573 | *ops = base_breakpoint_ops; | |
15574 | ops->insert_location = insert_catch_vfork; | |
15575 | ops->remove_location = remove_catch_vfork; | |
15576 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15577 | ops->print_it = print_it_catch_vfork; | |
15578 | ops->print_one = print_one_catch_vfork; | |
15579 | ops->print_mention = print_mention_catch_vfork; | |
15580 | ops->print_recreate = print_recreate_catch_vfork; | |
15581 | ||
15582 | /* Exec catchpoints. */ | |
15583 | ops = &catch_exec_breakpoint_ops; | |
15584 | *ops = base_breakpoint_ops; | |
15585 | ops->dtor = dtor_catch_exec; | |
15586 | ops->insert_location = insert_catch_exec; | |
15587 | ops->remove_location = remove_catch_exec; | |
15588 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15589 | ops->print_it = print_it_catch_exec; | |
15590 | ops->print_one = print_one_catch_exec; | |
15591 | ops->print_mention = print_mention_catch_exec; | |
15592 | ops->print_recreate = print_recreate_catch_exec; | |
15593 | ||
15594 | /* Syscall catchpoints. */ | |
15595 | ops = &catch_syscall_breakpoint_ops; | |
15596 | *ops = base_breakpoint_ops; | |
15597 | ops->dtor = dtor_catch_syscall; | |
15598 | ops->insert_location = insert_catch_syscall; | |
15599 | ops->remove_location = remove_catch_syscall; | |
15600 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
15601 | ops->print_it = print_it_catch_syscall; | |
15602 | ops->print_one = print_one_catch_syscall; | |
15603 | ops->print_mention = print_mention_catch_syscall; | |
15604 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
15605 | |
15606 | /* Solib-related catchpoints. */ | |
15607 | ops = &catch_solib_breakpoint_ops; | |
15608 | *ops = base_breakpoint_ops; | |
15609 | ops->dtor = dtor_catch_solib; | |
15610 | ops->insert_location = insert_catch_solib; | |
15611 | ops->remove_location = remove_catch_solib; | |
15612 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15613 | ops->check_status = check_status_catch_solib; | |
15614 | ops->print_it = print_it_catch_solib; | |
15615 | ops->print_one = print_one_catch_solib; | |
15616 | ops->print_mention = print_mention_catch_solib; | |
15617 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15618 | |
15619 | ops = &dprintf_breakpoint_ops; | |
15620 | *ops = bkpt_base_breakpoint_ops; | |
15621 | ops->re_set = bkpt_re_set; | |
15622 | ops->resources_needed = bkpt_resources_needed; | |
15623 | ops->print_it = bkpt_print_it; | |
15624 | ops->print_mention = bkpt_print_mention; | |
15625 | ops->print_recreate = bkpt_print_recreate; | |
2060206e PA |
15626 | } |
15627 | ||
c906108c | 15628 | void |
fba45db2 | 15629 | _initialize_breakpoint (void) |
c906108c SS |
15630 | { |
15631 | struct cmd_list_element *c; | |
15632 | ||
2060206e PA |
15633 | initialize_breakpoint_ops (); |
15634 | ||
84acb35a | 15635 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 15636 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 15637 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15638 | |
55aa24fb SDJ |
15639 | breakpoint_objfile_key |
15640 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15641 | |
fa3064dd YQ |
15642 | catch_syscall_inferior_data |
15643 | = register_inferior_data_with_cleanup (catch_syscall_inferior_data_cleanup); | |
15644 | ||
c906108c SS |
15645 | breakpoint_chain = 0; |
15646 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15647 | before a breakpoint is set. */ | |
15648 | breakpoint_count = 0; | |
15649 | ||
1042e4c0 SS |
15650 | tracepoint_count = 0; |
15651 | ||
1bedd215 AC |
15652 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15653 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15654 | Usage is `ignore N COUNT'.")); | |
c906108c | 15655 | if (xdb_commands) |
c5aa993b | 15656 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 15657 | |
1bedd215 AC |
15658 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15659 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15660 | Give breakpoint number as argument after \"commands\".\n\ |
15661 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15662 | The commands themselves follow starting on the next line.\n\ | |
15663 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15664 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15665 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15666 | |
d55637df | 15667 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15668 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15669 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15670 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15671 | set_cmd_completer (c, condition_completer); |
c906108c | 15672 | |
1bedd215 | 15673 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15674 | Set a temporary breakpoint.\n\ |
c906108c SS |
15675 | Like \"break\" except the breakpoint is only temporary,\n\ |
15676 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15677 | by using \"enable delete\" on the breakpoint number.\n\ |
15678 | \n" | |
15679 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15680 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15681 | |
1bedd215 | 15682 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15683 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15684 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15685 | some target hardware may not have this support.\n\ |
15686 | \n" | |
15687 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15688 | set_cmd_completer (c, location_completer); |
c906108c | 15689 | |
1bedd215 | 15690 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15691 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15692 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15693 | so it will be deleted when hit.\n\ |
15694 | \n" | |
15695 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15696 | set_cmd_completer (c, location_completer); |
c906108c | 15697 | |
1bedd215 AC |
15698 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15699 | Enable some breakpoints.\n\ | |
c906108c SS |
15700 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15701 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15702 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15703 | With a subcommand you can enable temporarily."), |
c906108c SS |
15704 | &enablelist, "enable ", 1, &cmdlist); |
15705 | if (xdb_commands) | |
1bedd215 AC |
15706 | add_com ("ab", class_breakpoint, enable_command, _("\ |
15707 | Enable some breakpoints.\n\ | |
c906108c SS |
15708 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15709 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15710 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15711 | With a subcommand you can enable temporarily.")); |
c906108c SS |
15712 | |
15713 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15714 | ||
84951ab5 | 15715 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15716 | Enable some breakpoints.\n\ |
c906108c SS |
15717 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15718 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15719 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15720 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15721 | |
1a966eab AC |
15722 | add_cmd ("once", no_class, enable_once_command, _("\ |
15723 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15724 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15725 | &enablebreaklist); |
15726 | ||
1a966eab AC |
15727 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15728 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15729 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15730 | &enablebreaklist); |
15731 | ||
816338b5 SS |
15732 | add_cmd ("count", no_class, enable_count_command, _("\ |
15733 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15734 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15735 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15736 | &enablebreaklist); | |
15737 | ||
1a966eab AC |
15738 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15739 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15740 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15741 | &enablelist); |
15742 | ||
1a966eab AC |
15743 | add_cmd ("once", no_class, enable_once_command, _("\ |
15744 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15745 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15746 | &enablelist); |
15747 | ||
15748 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15749 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15750 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15751 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15752 | &enablelist); |
15753 | ||
1bedd215 AC |
15754 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15755 | Disable some breakpoints.\n\ | |
c906108c SS |
15756 | Arguments are breakpoint numbers with spaces in between.\n\ |
15757 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15758 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15759 | &disablelist, "disable ", 1, &cmdlist); |
15760 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15761 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
15762 | if (xdb_commands) | |
1bedd215 AC |
15763 | add_com ("sb", class_breakpoint, disable_command, _("\ |
15764 | Disable some breakpoints.\n\ | |
c906108c SS |
15765 | Arguments are breakpoint numbers with spaces in between.\n\ |
15766 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15767 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 15768 | |
1a966eab AC |
15769 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15770 | Disable some breakpoints.\n\ | |
c906108c SS |
15771 | Arguments are breakpoint numbers with spaces in between.\n\ |
15772 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15773 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15774 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15775 | &disablelist); |
15776 | ||
1bedd215 AC |
15777 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15778 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15779 | Arguments are breakpoint numbers with spaces in between.\n\ |
15780 | To delete all breakpoints, give no argument.\n\ | |
15781 | \n\ | |
15782 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15783 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15784 | &deletelist, "delete ", 1, &cmdlist); |
15785 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15786 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15787 | if (xdb_commands) |
1bedd215 AC |
15788 | add_com ("db", class_breakpoint, delete_command, _("\ |
15789 | Delete some breakpoints.\n\ | |
c906108c | 15790 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 15791 | To delete all breakpoints, give no argument.\n")); |
c906108c | 15792 | |
1a966eab AC |
15793 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15794 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15795 | Arguments are breakpoint numbers with spaces in between.\n\ |
15796 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15797 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15798 | &deletelist); |
15799 | ||
1bedd215 AC |
15800 | add_com ("clear", class_breakpoint, clear_command, _("\ |
15801 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
15802 | Argument may be line number, function name, or \"*\" and an address.\n\ |
15803 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
15804 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
15805 | If an address is specified, breakpoints at that address are cleared.\n\ |
15806 | \n\ | |
15807 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
15808 | is executing in.\n\ |
15809 | \n\ | |
1bedd215 | 15810 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15811 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15812 | |
1bedd215 | 15813 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
15814 | Set breakpoint at specified line or function.\n" |
15815 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 15816 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15817 | |
c906108c SS |
15818 | add_com_alias ("b", "break", class_run, 1); |
15819 | add_com_alias ("br", "break", class_run, 1); | |
15820 | add_com_alias ("bre", "break", class_run, 1); | |
15821 | add_com_alias ("brea", "break", class_run, 1); | |
15822 | ||
7681d515 PM |
15823 | if (xdb_commands) |
15824 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
15825 | |
15826 | if (dbx_commands) | |
15827 | { | |
1bedd215 AC |
15828 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15829 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15830 | &stoplist, "stop ", 1, &cmdlist); |
15831 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15832 | _("Break in function or address."), &stoplist); |
c5aa993b | 15833 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15834 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
15835 | add_com ("status", class_info, breakpoints_info, _("\ |
15836 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15837 | The \"Type\" column indicates one of:\n\ |
15838 | \tbreakpoint - normal breakpoint\n\ | |
15839 | \twatchpoint - watchpoint\n\ | |
15840 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15841 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15842 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15843 | address and file/line number respectively.\n\ |
15844 | \n\ | |
15845 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15846 | are set to the address of the last breakpoint listed unless the command\n\ |
15847 | is prefixed with \"server \".\n\n\ | |
c906108c | 15848 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15849 | breakpoint set.")); |
c906108c SS |
15850 | } |
15851 | ||
1bedd215 | 15852 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 15853 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15854 | The \"Type\" column indicates one of:\n\ |
15855 | \tbreakpoint - normal breakpoint\n\ | |
15856 | \twatchpoint - watchpoint\n\ | |
15857 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15858 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15859 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15860 | address and file/line number respectively.\n\ |
15861 | \n\ | |
15862 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15863 | are set to the address of the last breakpoint listed unless the command\n\ |
15864 | is prefixed with \"server \".\n\n\ | |
c906108c | 15865 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15866 | breakpoint set.")); |
c906108c | 15867 | |
6b04bdb7 MS |
15868 | add_info_alias ("b", "breakpoints", 1); |
15869 | ||
c906108c | 15870 | if (xdb_commands) |
1bedd215 AC |
15871 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
15872 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15873 | The \"Type\" column indicates one of:\n\ |
15874 | \tbreakpoint - normal breakpoint\n\ | |
15875 | \twatchpoint - watchpoint\n\ | |
15876 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15877 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15878 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15879 | address and file/line number respectively.\n\ |
15880 | \n\ | |
15881 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15882 | are set to the address of the last breakpoint listed unless the command\n\ |
15883 | is prefixed with \"server \".\n\n\ | |
c906108c | 15884 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15885 | breakpoint set.")); |
c906108c | 15886 | |
1a966eab AC |
15887 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15888 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15889 | The \"Type\" column indicates one of:\n\ |
15890 | \tbreakpoint - normal breakpoint\n\ | |
15891 | \twatchpoint - watchpoint\n\ | |
15892 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15893 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15894 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15895 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15896 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15897 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15898 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15899 | address and file/line number respectively.\n\ |
15900 | \n\ | |
15901 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15902 | are set to the address of the last breakpoint listed unless the command\n\ |
15903 | is prefixed with \"server \".\n\n\ | |
c906108c | 15904 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15905 | breakpoint set."), |
c906108c SS |
15906 | &maintenanceinfolist); |
15907 | ||
44feb3ce TT |
15908 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15909 | Set catchpoints to catch events."), | |
15910 | &catch_cmdlist, "catch ", | |
15911 | 0/*allow-unknown*/, &cmdlist); | |
15912 | ||
15913 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15914 | Set temporary catchpoints to catch events."), | |
15915 | &tcatch_cmdlist, "tcatch ", | |
15916 | 0/*allow-unknown*/, &cmdlist); | |
15917 | ||
15918 | /* Add catch and tcatch sub-commands. */ | |
15919 | add_catch_command ("catch", _("\ | |
88e7d25d | 15920 | Catch an exception, when caught."), |
44feb3ce | 15921 | catch_catch_command, |
a96d9b2e | 15922 | NULL, |
44feb3ce TT |
15923 | CATCH_PERMANENT, |
15924 | CATCH_TEMPORARY); | |
15925 | add_catch_command ("throw", _("\ | |
88e7d25d | 15926 | Catch an exception, when thrown."), |
44feb3ce | 15927 | catch_throw_command, |
a96d9b2e | 15928 | NULL, |
44feb3ce TT |
15929 | CATCH_PERMANENT, |
15930 | CATCH_TEMPORARY); | |
15931 | add_catch_command ("fork", _("Catch calls to fork."), | |
15932 | catch_fork_command_1, | |
a96d9b2e | 15933 | NULL, |
44feb3ce TT |
15934 | (void *) (uintptr_t) catch_fork_permanent, |
15935 | (void *) (uintptr_t) catch_fork_temporary); | |
15936 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15937 | catch_fork_command_1, | |
a96d9b2e | 15938 | NULL, |
44feb3ce TT |
15939 | (void *) (uintptr_t) catch_vfork_permanent, |
15940 | (void *) (uintptr_t) catch_vfork_temporary); | |
15941 | add_catch_command ("exec", _("Catch calls to exec."), | |
15942 | catch_exec_command_1, | |
a96d9b2e SDJ |
15943 | NULL, |
15944 | CATCH_PERMANENT, | |
15945 | CATCH_TEMPORARY); | |
edcc5120 TT |
15946 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15947 | Usage: catch load [REGEX]\n\ | |
15948 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15949 | catch_load_command_1, | |
15950 | NULL, | |
15951 | CATCH_PERMANENT, | |
15952 | CATCH_TEMPORARY); | |
15953 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15954 | Usage: catch unload [REGEX]\n\ | |
15955 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15956 | catch_unload_command_1, | |
15957 | NULL, | |
15958 | CATCH_PERMANENT, | |
15959 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
15960 | add_catch_command ("syscall", _("\ |
15961 | Catch system calls by their names and/or numbers.\n\ | |
15962 | Arguments say which system calls to catch. If no arguments\n\ | |
15963 | are given, every system call will be caught.\n\ | |
15964 | Arguments, if given, should be one or more system call names\n\ | |
15965 | (if your system supports that), or system call numbers."), | |
15966 | catch_syscall_command_1, | |
15967 | catch_syscall_completer, | |
44feb3ce TT |
15968 | CATCH_PERMANENT, |
15969 | CATCH_TEMPORARY); | |
c5aa993b | 15970 | |
1bedd215 AC |
15971 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15972 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15973 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15974 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15975 | an expression changes.\n\ |
15976 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15977 | the memory to which it refers.")); | |
65d12d83 | 15978 | set_cmd_completer (c, expression_completer); |
c906108c | 15979 | |
1bedd215 AC |
15980 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15981 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15982 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15983 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15984 | an expression is read.\n\ |
15985 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15986 | the memory to which it refers.")); | |
65d12d83 | 15987 | set_cmd_completer (c, expression_completer); |
c906108c | 15988 | |
1bedd215 AC |
15989 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15990 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15991 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15992 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15993 | an expression is either read or written.\n\ |
15994 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15995 | the memory to which it refers.")); | |
65d12d83 | 15996 | set_cmd_completer (c, expression_completer); |
c906108c | 15997 | |
d77f58be | 15998 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 15999 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16000 | |
920d2a44 AC |
16001 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16002 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16003 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16004 | &can_use_hw_watchpoints, _("\ | |
16005 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16006 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16007 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16008 | such is available. (However, any hardware watchpoints that were\n\ | |
16009 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16010 | hardware.)"), |
16011 | NULL, | |
920d2a44 | 16012 | show_can_use_hw_watchpoints, |
85c07804 | 16013 | &setlist, &showlist); |
c906108c SS |
16014 | |
16015 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16016 | |
1042e4c0 SS |
16017 | /* Tracepoint manipulation commands. */ |
16018 | ||
16019 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16020 | Set a tracepoint at specified line or function.\n\ | |
16021 | \n" | |
16022 | BREAK_ARGS_HELP ("trace") "\n\ | |
16023 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16024 | set_cmd_completer (c, location_completer); | |
16025 | ||
16026 | add_com_alias ("tp", "trace", class_alias, 0); | |
16027 | add_com_alias ("tr", "trace", class_alias, 1); | |
16028 | add_com_alias ("tra", "trace", class_alias, 1); | |
16029 | add_com_alias ("trac", "trace", class_alias, 1); | |
16030 | ||
7a697b8d SS |
16031 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16032 | Set a fast tracepoint at specified line or function.\n\ | |
16033 | \n" | |
16034 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16035 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16036 | set_cmd_completer (c, location_completer); | |
16037 | ||
0fb4aa4b PA |
16038 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16039 | Set a static tracepoint at specified line, function or marker.\n\ | |
16040 | \n\ | |
16041 | strace [LOCATION] [if CONDITION]\n\ | |
16042 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16043 | or -m MARKER_ID.\n\ | |
16044 | If a line number is specified, probe the marker at start of code\n\ | |
16045 | for that line. If a function is specified, probe the marker at start\n\ | |
16046 | of code for that function. If an address is specified, probe the marker\n\ | |
16047 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16048 | with that name. With no LOCATION, uses current execution address of\n\ | |
16049 | the selected stack frame.\n\ | |
16050 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16051 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16052 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16053 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16054 | \n\ | |
16055 | CONDITION is a boolean expression.\n\ | |
16056 | \n\ | |
d41c0fc8 PA |
16057 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16058 | conditions are different.\n\ | |
0fb4aa4b PA |
16059 | \n\ |
16060 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16061 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16062 | set_cmd_completer (c, location_completer); | |
16063 | ||
1042e4c0 | 16064 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16065 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16066 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16067 | last tracepoint set.")); | |
16068 | ||
16069 | add_info_alias ("tp", "tracepoints", 1); | |
16070 | ||
16071 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16072 | Delete specified tracepoints.\n\ | |
16073 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16074 | No argument means delete all tracepoints."), | |
16075 | &deletelist); | |
16076 | ||
16077 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16078 | Disable specified tracepoints.\n\ | |
16079 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16080 | No argument means disable all tracepoints."), | |
16081 | &disablelist); | |
16082 | deprecate_cmd (c, "disable"); | |
16083 | ||
16084 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16085 | Enable specified tracepoints.\n\ | |
16086 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16087 | No argument means enable all tracepoints."), | |
16088 | &enablelist); | |
16089 | deprecate_cmd (c, "enable"); | |
16090 | ||
16091 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16092 | Set the passcount for a tracepoint.\n\ | |
16093 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16094 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16095 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16096 | ||
6149aea9 PA |
16097 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16098 | _("Save breakpoint definitions as a script."), | |
16099 | &save_cmdlist, "save ", | |
16100 | 0/*allow-unknown*/, &cmdlist); | |
16101 | ||
16102 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16103 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16104 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16105 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16106 | session to restore them."), | |
16107 | &save_cmdlist); | |
16108 | set_cmd_completer (c, filename_completer); | |
16109 | ||
16110 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16111 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16112 | Use the 'source' command in another debug session to restore them."), |
16113 | &save_cmdlist); | |
1042e4c0 SS |
16114 | set_cmd_completer (c, filename_completer); |
16115 | ||
6149aea9 PA |
16116 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16117 | deprecate_cmd (c, "save tracepoints"); | |
16118 | ||
1bedd215 | 16119 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16120 | Breakpoint specific settings\n\ |
16121 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16122 | pending breakpoint behavior"), |
fa8d40ab JJ |
16123 | &breakpoint_set_cmdlist, "set breakpoint ", |
16124 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16125 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16126 | Breakpoint specific settings\n\ |
16127 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16128 | pending breakpoint behavior"), |
fa8d40ab JJ |
16129 | &breakpoint_show_cmdlist, "show breakpoint ", |
16130 | 0/*allow-unknown*/, &showlist); | |
16131 | ||
7915a72c AC |
16132 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16133 | &pending_break_support, _("\ | |
16134 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16135 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16136 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16137 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16138 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16139 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16140 | NULL, |
920d2a44 | 16141 | show_pending_break_support, |
6e1d7d6c AC |
16142 | &breakpoint_set_cmdlist, |
16143 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16144 | |
16145 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16146 | |
16147 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16148 | &automatic_hardware_breakpoints, _("\ | |
16149 | Set automatic usage of hardware breakpoints."), _("\ | |
16150 | Show automatic usage of hardware breakpoints."), _("\ | |
16151 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16152 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16153 | a warning will be emitted for such breakpoints."), | |
16154 | NULL, | |
16155 | show_automatic_hardware_breakpoints, | |
16156 | &breakpoint_set_cmdlist, | |
16157 | &breakpoint_show_cmdlist); | |
74960c60 | 16158 | |
72d0e2c5 YQ |
16159 | add_setshow_auto_boolean_cmd ("always-inserted", class_support, |
16160 | &always_inserted_mode, _("\ | |
74960c60 VP |
16161 | Set mode for inserting breakpoints."), _("\ |
16162 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
16163 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
16164 | resumed, and removed when execution stops. When this mode is on,\n\ | |
16165 | breakpoints are inserted immediately and removed only when the user\n\ | |
16166 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
16167 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
16168 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
16169 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
16170 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
72d0e2c5 YQ |
16171 | NULL, |
16172 | &show_always_inserted_mode, | |
16173 | &breakpoint_set_cmdlist, | |
16174 | &breakpoint_show_cmdlist); | |
f1310107 | 16175 | |
b775012e LM |
16176 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16177 | condition_evaluation_enums, | |
16178 | &condition_evaluation_mode_1, _("\ | |
16179 | Set mode of breakpoint condition evaluation."), _("\ | |
16180 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16181 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16182 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16183 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16184 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16185 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16186 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16187 | be set to \"gdb\""), | |
16188 | &set_condition_evaluation_mode, | |
16189 | &show_condition_evaluation_mode, | |
16190 | &breakpoint_set_cmdlist, | |
16191 | &breakpoint_show_cmdlist); | |
16192 | ||
f1310107 TJB |
16193 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16194 | Set a breakpoint for an address range.\n\ | |
16195 | break-range START-LOCATION, END-LOCATION\n\ | |
16196 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16197 | LINENUM, for that line in the current file,\n\ | |
16198 | FILE:LINENUM, for that line in that file,\n\ | |
16199 | +OFFSET, for that number of lines after the current line\n\ | |
16200 | or the start of the range\n\ | |
16201 | FUNCTION, for the first line in that function,\n\ | |
16202 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16203 | *ADDRESS, for the instruction at that address.\n\ | |
16204 | \n\ | |
16205 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16206 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16207 | range (including START-LOCATION and END-LOCATION).")); | |
16208 | ||
e7e0cddf SS |
16209 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16210 | Set a dynamic printf at specified line or function.\n\ | |
16211 | dprintf location,format string,arg1,arg2,...\n\ | |
16212 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16213 | If a line number is specified, break at start of code for that line.\n\ | |
16214 | If a function is specified, break at start of code for that function.\n\ | |
16215 | ")); | |
16216 | set_cmd_completer (c, location_completer); | |
16217 | ||
16218 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16219 | dprintf_style_enums, &dprintf_style, _("\ | |
16220 | Set the style of usage for dynamic printf."), _("\ | |
16221 | Show the style of usage for dynamic printf."), _("\ | |
16222 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16223 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16224 | console, as with the \"printf\" command.\n\ | |
16225 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16226 | program; by default printf(), but you can choose a different function or\n\ | |
16227 | output stream by setting dprintf-function and dprintf-channel."), | |
16228 | update_dprintf_commands, NULL, | |
16229 | &setlist, &showlist); | |
16230 | ||
16231 | dprintf_function = xstrdup ("printf"); | |
16232 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16233 | &dprintf_function, _("\ | |
16234 | Set the function to use for dynamic printf"), _("\ | |
16235 | Show the function to use for dynamic printf"), NULL, | |
16236 | update_dprintf_commands, NULL, | |
16237 | &setlist, &showlist); | |
16238 | ||
16239 | dprintf_channel = xstrdup (""); | |
16240 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16241 | &dprintf_channel, _("\ | |
16242 | Set the channel to use for dynamic printf"), _("\ | |
16243 | Show the channel to use for dynamic printf"), NULL, | |
16244 | update_dprintf_commands, NULL, | |
16245 | &setlist, &showlist); | |
16246 | ||
765dc015 | 16247 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16248 | |
16249 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 16250 | } |