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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" |
c906108c | 71 | |
1042e4c0 SS |
72 | /* readline include files */ |
73 | #include "readline/readline.h" | |
74 | #include "readline/history.h" | |
75 | ||
76 | /* readline defines this. */ | |
77 | #undef savestring | |
78 | ||
034dad6f | 79 | #include "mi/mi-common.h" |
7371cf6d | 80 | #include "python/python.h" |
104c1213 | 81 | |
4a64f543 | 82 | /* Prototypes for local functions. */ |
c906108c | 83 | |
a14ed312 | 84 | static void enable_delete_command (char *, int); |
c906108c | 85 | |
a14ed312 | 86 | static void enable_once_command (char *, int); |
c906108c | 87 | |
816338b5 SS |
88 | static void enable_count_command (char *, int); |
89 | ||
a14ed312 | 90 | static void disable_command (char *, int); |
c906108c | 91 | |
a14ed312 | 92 | static void enable_command (char *, int); |
c906108c | 93 | |
95a42b64 TT |
94 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
95 | void *), | |
96 | void *); | |
c906108c | 97 | |
a14ed312 | 98 | static void ignore_command (char *, int); |
c906108c | 99 | |
4efb68b1 | 100 | static int breakpoint_re_set_one (void *); |
c906108c | 101 | |
348d480f PA |
102 | static void breakpoint_re_set_default (struct breakpoint *); |
103 | ||
983af33b SDJ |
104 | static void create_sals_from_address_default (char **, |
105 | struct linespec_result *, | |
106 | enum bptype, char *, | |
107 | char **); | |
108 | ||
109 | static void create_breakpoints_sal_default (struct gdbarch *, | |
110 | struct linespec_result *, | |
111 | struct linespec_sals *, | |
e7e0cddf | 112 | char *, char *, enum bptype, |
983af33b SDJ |
113 | enum bpdisp, int, int, |
114 | int, | |
115 | const struct breakpoint_ops *, | |
44f238bb | 116 | int, int, int, unsigned); |
983af33b SDJ |
117 | |
118 | static void decode_linespec_default (struct breakpoint *, char **, | |
119 | struct symtabs_and_lines *); | |
120 | ||
a14ed312 | 121 | static void clear_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static void catch_command (char *, int); |
c906108c | 124 | |
a9634178 | 125 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 126 | |
98deb0da | 127 | static void break_command_1 (char *, int, int); |
c906108c | 128 | |
a14ed312 | 129 | static void mention (struct breakpoint *); |
c906108c | 130 | |
348d480f PA |
131 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
132 | enum bptype, | |
c0a91b2b | 133 | const struct breakpoint_ops *); |
3742cc8b YQ |
134 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
135 | const struct symtab_and_line *); | |
136 | ||
4a64f543 MS |
137 | /* This function is used in gdbtk sources and thus can not be made |
138 | static. */ | |
63c252f8 | 139 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 140 | struct symtab_and_line, |
c0a91b2b TT |
141 | enum bptype, |
142 | const struct breakpoint_ops *); | |
c906108c | 143 | |
06edf0c0 PA |
144 | static struct breakpoint * |
145 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
146 | enum bptype type, | |
c0a91b2b | 147 | const struct breakpoint_ops *ops); |
06edf0c0 | 148 | |
76897487 KB |
149 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
150 | ||
a6d9a66e UW |
151 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
152 | CORE_ADDR bpaddr, | |
88f7da05 | 153 | enum bptype bptype); |
76897487 | 154 | |
6c95b8df PA |
155 | static void describe_other_breakpoints (struct gdbarch *, |
156 | struct program_space *, CORE_ADDR, | |
5af949e3 | 157 | struct obj_section *, int); |
c906108c | 158 | |
6c95b8df PA |
159 | static int breakpoint_address_match (struct address_space *aspace1, |
160 | CORE_ADDR addr1, | |
161 | struct address_space *aspace2, | |
162 | CORE_ADDR addr2); | |
163 | ||
85d721b8 PA |
164 | static int watchpoint_locations_match (struct bp_location *loc1, |
165 | struct bp_location *loc2); | |
166 | ||
f1310107 TJB |
167 | static int breakpoint_location_address_match (struct bp_location *bl, |
168 | struct address_space *aspace, | |
169 | CORE_ADDR addr); | |
170 | ||
a14ed312 | 171 | static void breakpoints_info (char *, int); |
c906108c | 172 | |
d77f58be SS |
173 | static void watchpoints_info (char *, int); |
174 | ||
e5a67952 MS |
175 | static int breakpoint_1 (char *, int, |
176 | int (*) (const struct breakpoint *)); | |
c906108c | 177 | |
4efb68b1 | 178 | static int breakpoint_cond_eval (void *); |
c906108c | 179 | |
4efb68b1 | 180 | static void cleanup_executing_breakpoints (void *); |
c906108c | 181 | |
a14ed312 | 182 | static void commands_command (char *, int); |
c906108c | 183 | |
a14ed312 | 184 | static void condition_command (char *, int); |
c906108c | 185 | |
c5aa993b JM |
186 | typedef enum |
187 | { | |
188 | mark_inserted, | |
189 | mark_uninserted | |
190 | } | |
191 | insertion_state_t; | |
c906108c | 192 | |
0bde7532 | 193 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 194 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 195 | |
e514a9d6 | 196 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 197 | |
4efb68b1 | 198 | static int watchpoint_check (void *); |
c906108c | 199 | |
a14ed312 | 200 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 201 | |
a14ed312 | 202 | static int hw_breakpoint_used_count (void); |
c906108c | 203 | |
a1398e0c PA |
204 | static int hw_watchpoint_use_count (struct breakpoint *); |
205 | ||
206 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
207 | enum bptype type, | |
208 | int *other_type_used); | |
c906108c | 209 | |
a14ed312 | 210 | static void hbreak_command (char *, int); |
c906108c | 211 | |
a14ed312 | 212 | static void thbreak_command (char *, int); |
c906108c | 213 | |
816338b5 SS |
214 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
215 | int count); | |
c906108c | 216 | |
a14ed312 | 217 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 218 | |
a14ed312 | 219 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 220 | |
a14ed312 | 221 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 222 | |
a14ed312 | 223 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 224 | |
d85310f7 MS |
225 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
226 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 227 | |
a14ed312 | 228 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 229 | |
d03285ec UW |
230 | static void detach_single_step_breakpoints (void); |
231 | ||
6c95b8df PA |
232 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
233 | CORE_ADDR pc); | |
1aafd4da | 234 | |
fe3f5fa8 | 235 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
236 | static void incref_bp_location (struct bp_location *loc); |
237 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 238 | |
39d61571 | 239 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 240 | |
b60e7edf | 241 | static void update_global_location_list (int); |
a5606eee | 242 | |
b60e7edf | 243 | static void update_global_location_list_nothrow (int); |
74960c60 | 244 | |
d77f58be | 245 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
246 | |
247 | static void insert_breakpoint_locations (void); | |
a5606eee | 248 | |
a96d9b2e SDJ |
249 | static int syscall_catchpoint_p (struct breakpoint *b); |
250 | ||
1042e4c0 SS |
251 | static void tracepoints_info (char *, int); |
252 | ||
253 | static void delete_trace_command (char *, int); | |
254 | ||
255 | static void enable_trace_command (char *, int); | |
256 | ||
257 | static void disable_trace_command (char *, int); | |
258 | ||
259 | static void trace_pass_command (char *, int); | |
260 | ||
9c06b0b4 TJB |
261 | static int is_masked_watchpoint (const struct breakpoint *b); |
262 | ||
b775012e LM |
263 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
264 | ||
983af33b SDJ |
265 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
266 | otherwise. */ | |
267 | ||
268 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 269 | |
edcc5120 TT |
270 | static void init_catchpoint (struct breakpoint *b, |
271 | struct gdbarch *gdbarch, int tempflag, | |
272 | char *cond_string, | |
273 | const struct breakpoint_ops *ops); | |
274 | ||
2060206e PA |
275 | /* The abstract base class all breakpoint_ops structures inherit |
276 | from. */ | |
277 | static struct breakpoint_ops base_breakpoint_ops; | |
278 | ||
279 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
280 | that are implemented on top of software or hardware breakpoints | |
281 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
282 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
283 | ||
284 | /* Internal breakpoints class type. */ | |
06edf0c0 | 285 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
286 | |
287 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
288 | static struct breakpoint_ops momentary_breakpoint_ops; |
289 | ||
2060206e PA |
290 | /* The breakpoint_ops structure to be used in regular user created |
291 | breakpoints. */ | |
292 | struct breakpoint_ops bkpt_breakpoint_ops; | |
293 | ||
55aa24fb SDJ |
294 | /* Breakpoints set on probes. */ |
295 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
296 | ||
e7e0cddf SS |
297 | /* Dynamic printf class type. */ |
298 | static struct breakpoint_ops dprintf_breakpoint_ops; | |
299 | ||
5cea2a26 PA |
300 | /* A reference-counted struct command_line. This lets multiple |
301 | breakpoints share a single command list. */ | |
302 | struct counted_command_line | |
303 | { | |
304 | /* The reference count. */ | |
305 | int refc; | |
306 | ||
307 | /* The command list. */ | |
308 | struct command_line *commands; | |
309 | }; | |
310 | ||
311 | struct command_line * | |
312 | breakpoint_commands (struct breakpoint *b) | |
313 | { | |
314 | return b->commands ? b->commands->commands : NULL; | |
315 | } | |
3daf8fe5 | 316 | |
f3b1572e PA |
317 | /* Flag indicating that a command has proceeded the inferior past the |
318 | current breakpoint. */ | |
319 | ||
320 | static int breakpoint_proceeded; | |
321 | ||
956a9fb9 | 322 | const char * |
2cec12e5 AR |
323 | bpdisp_text (enum bpdisp disp) |
324 | { | |
4a64f543 MS |
325 | /* NOTE: the following values are a part of MI protocol and |
326 | represent values of 'disp' field returned when inferior stops at | |
327 | a breakpoint. */ | |
bc043ef3 | 328 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 329 | |
2cec12e5 AR |
330 | return bpdisps[(int) disp]; |
331 | } | |
c906108c | 332 | |
4a64f543 | 333 | /* Prototypes for exported functions. */ |
c906108c | 334 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 335 | if such is available. */ |
c906108c SS |
336 | static int can_use_hw_watchpoints; |
337 | ||
920d2a44 AC |
338 | static void |
339 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
340 | struct cmd_list_element *c, | |
341 | const char *value) | |
342 | { | |
3e43a32a MS |
343 | fprintf_filtered (file, |
344 | _("Debugger's willingness to use " | |
345 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
346 | value); |
347 | } | |
348 | ||
fa8d40ab JJ |
349 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
350 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 351 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
352 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
353 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
354 | static void |
355 | show_pending_break_support (struct ui_file *file, int from_tty, | |
356 | struct cmd_list_element *c, | |
357 | const char *value) | |
358 | { | |
3e43a32a MS |
359 | fprintf_filtered (file, |
360 | _("Debugger's behavior regarding " | |
361 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
362 | value); |
363 | } | |
fa8d40ab | 364 | |
765dc015 | 365 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 366 | set with "break" but falling in read-only memory. |
765dc015 VP |
367 | If 0, gdb will warn about such breakpoints, but won't automatically |
368 | use hardware breakpoints. */ | |
369 | static int automatic_hardware_breakpoints; | |
370 | static void | |
371 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
372 | struct cmd_list_element *c, | |
373 | const char *value) | |
374 | { | |
3e43a32a MS |
375 | fprintf_filtered (file, |
376 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
377 | value); |
378 | } | |
379 | ||
33e5cbd6 PA |
380 | /* If on, gdb will keep breakpoints inserted even as inferior is |
381 | stopped, and immediately insert any new breakpoints. If off, gdb | |
382 | will insert breakpoints into inferior only when resuming it, and | |
383 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
384 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
385 | ||
386 | static const char always_inserted_auto[] = "auto"; | |
387 | static const char always_inserted_on[] = "on"; | |
388 | static const char always_inserted_off[] = "off"; | |
40478521 | 389 | static const char *const always_inserted_enums[] = { |
33e5cbd6 PA |
390 | always_inserted_auto, |
391 | always_inserted_off, | |
392 | always_inserted_on, | |
393 | NULL | |
394 | }; | |
395 | static const char *always_inserted_mode = always_inserted_auto; | |
396 | static void | |
74960c60 | 397 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 398 | struct cmd_list_element *c, const char *value) |
74960c60 | 399 | { |
33e5cbd6 | 400 | if (always_inserted_mode == always_inserted_auto) |
3e43a32a MS |
401 | fprintf_filtered (file, |
402 | _("Always inserted breakpoint " | |
403 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
404 | value, |
405 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
406 | else | |
3e43a32a MS |
407 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
408 | value); | |
74960c60 VP |
409 | } |
410 | ||
33e5cbd6 PA |
411 | int |
412 | breakpoints_always_inserted_mode (void) | |
413 | { | |
20388dd6 YQ |
414 | return (always_inserted_mode == always_inserted_on |
415 | || (always_inserted_mode == always_inserted_auto && non_stop)); | |
33e5cbd6 | 416 | } |
765dc015 | 417 | |
b775012e LM |
418 | static const char condition_evaluation_both[] = "host or target"; |
419 | ||
420 | /* Modes for breakpoint condition evaluation. */ | |
421 | static const char condition_evaluation_auto[] = "auto"; | |
422 | static const char condition_evaluation_host[] = "host"; | |
423 | static const char condition_evaluation_target[] = "target"; | |
424 | static const char *const condition_evaluation_enums[] = { | |
425 | condition_evaluation_auto, | |
426 | condition_evaluation_host, | |
427 | condition_evaluation_target, | |
428 | NULL | |
429 | }; | |
430 | ||
431 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
432 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
433 | ||
434 | /* Global that we use to display information to the user (gets its value from | |
435 | condition_evaluation_mode_1. */ | |
436 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
437 | ||
438 | /* Translate a condition evaluation mode MODE into either "host" | |
439 | or "target". This is used mostly to translate from "auto" to the | |
440 | real setting that is being used. It returns the translated | |
441 | evaluation mode. */ | |
442 | ||
443 | static const char * | |
444 | translate_condition_evaluation_mode (const char *mode) | |
445 | { | |
446 | if (mode == condition_evaluation_auto) | |
447 | { | |
448 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
449 | return condition_evaluation_target; | |
450 | else | |
451 | return condition_evaluation_host; | |
452 | } | |
453 | else | |
454 | return mode; | |
455 | } | |
456 | ||
457 | /* Discovers what condition_evaluation_auto translates to. */ | |
458 | ||
459 | static const char * | |
460 | breakpoint_condition_evaluation_mode (void) | |
461 | { | |
462 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
463 | } | |
464 | ||
465 | /* Return true if GDB should evaluate breakpoint conditions or false | |
466 | otherwise. */ | |
467 | ||
468 | static int | |
469 | gdb_evaluates_breakpoint_condition_p (void) | |
470 | { | |
471 | const char *mode = breakpoint_condition_evaluation_mode (); | |
472 | ||
473 | return (mode == condition_evaluation_host); | |
474 | } | |
475 | ||
a14ed312 | 476 | void _initialize_breakpoint (void); |
c906108c | 477 | |
c906108c SS |
478 | /* Are we executing breakpoint commands? */ |
479 | static int executing_breakpoint_commands; | |
480 | ||
c02f5703 MS |
481 | /* Are overlay event breakpoints enabled? */ |
482 | static int overlay_events_enabled; | |
483 | ||
e09342b5 TJB |
484 | /* See description in breakpoint.h. */ |
485 | int target_exact_watchpoints = 0; | |
486 | ||
c906108c | 487 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 488 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 489 | current breakpoint. */ |
c906108c | 490 | |
5c44784c | 491 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 492 | |
5c44784c JM |
493 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
494 | for (B = breakpoint_chain; \ | |
495 | B ? (TMP=B->next, 1): 0; \ | |
496 | B = TMP) | |
c906108c | 497 | |
4a64f543 MS |
498 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
499 | not provided so update_global_location_list must not be called | |
500 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 501 | |
876fa593 JK |
502 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
503 | for (BP_TMP = bp_location; \ | |
504 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
505 | BP_TMP++) | |
7cc221ef | 506 | |
b775012e LM |
507 | /* Iterates through locations with address ADDRESS for the currently selected |
508 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
509 | to where the loop should start from. | |
510 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
511 | appropriate location to start with. */ | |
512 | ||
513 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
514 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
515 | BP_LOCP_TMP = BP_LOCP_START; \ | |
516 | BP_LOCP_START \ | |
517 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
518 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
519 | BP_LOCP_TMP++) | |
520 | ||
1042e4c0 SS |
521 | /* Iterator for tracepoints only. */ |
522 | ||
523 | #define ALL_TRACEPOINTS(B) \ | |
524 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 525 | if (is_tracepoint (B)) |
1042e4c0 | 526 | |
7cc221ef | 527 | /* Chains of all breakpoints defined. */ |
c906108c SS |
528 | |
529 | struct breakpoint *breakpoint_chain; | |
530 | ||
876fa593 JK |
531 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
532 | ||
533 | static struct bp_location **bp_location; | |
534 | ||
535 | /* Number of elements of BP_LOCATION. */ | |
536 | ||
537 | static unsigned bp_location_count; | |
538 | ||
4a64f543 MS |
539 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
540 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
541 | result from bp_location_has_shadow. You can use it for roughly | |
542 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
543 | an address you need to read. */ | |
876fa593 JK |
544 | |
545 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
546 | ||
4a64f543 MS |
547 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
548 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
549 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
550 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
551 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
552 | |
553 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 554 | |
4a64f543 MS |
555 | /* The locations that no longer correspond to any breakpoint, unlinked |
556 | from bp_location array, but for which a hit may still be reported | |
557 | by a target. */ | |
20874c92 VP |
558 | VEC(bp_location_p) *moribund_locations = NULL; |
559 | ||
c906108c SS |
560 | /* Number of last breakpoint made. */ |
561 | ||
95a42b64 TT |
562 | static int breakpoint_count; |
563 | ||
86b17b60 PA |
564 | /* The value of `breakpoint_count' before the last command that |
565 | created breakpoints. If the last (break-like) command created more | |
566 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
567 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
568 | static int prev_breakpoint_count; | |
c906108c | 569 | |
1042e4c0 SS |
570 | /* Number of last tracepoint made. */ |
571 | ||
95a42b64 | 572 | static int tracepoint_count; |
1042e4c0 | 573 | |
6149aea9 PA |
574 | static struct cmd_list_element *breakpoint_set_cmdlist; |
575 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 576 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 577 | |
468d015d JJ |
578 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
579 | static int | |
580 | breakpoint_enabled (struct breakpoint *b) | |
581 | { | |
0d381245 | 582 | return (b->enable_state == bp_enabled); |
468d015d JJ |
583 | } |
584 | ||
c906108c SS |
585 | /* Set breakpoint count to NUM. */ |
586 | ||
95a42b64 | 587 | static void |
fba45db2 | 588 | set_breakpoint_count (int num) |
c906108c | 589 | { |
86b17b60 | 590 | prev_breakpoint_count = breakpoint_count; |
c906108c | 591 | breakpoint_count = num; |
4fa62494 | 592 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
593 | } |
594 | ||
86b17b60 PA |
595 | /* Used by `start_rbreak_breakpoints' below, to record the current |
596 | breakpoint count before "rbreak" creates any breakpoint. */ | |
597 | static int rbreak_start_breakpoint_count; | |
598 | ||
95a42b64 TT |
599 | /* Called at the start an "rbreak" command to record the first |
600 | breakpoint made. */ | |
86b17b60 | 601 | |
95a42b64 TT |
602 | void |
603 | start_rbreak_breakpoints (void) | |
604 | { | |
86b17b60 | 605 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
606 | } |
607 | ||
608 | /* Called at the end of an "rbreak" command to record the last | |
609 | breakpoint made. */ | |
86b17b60 | 610 | |
95a42b64 TT |
611 | void |
612 | end_rbreak_breakpoints (void) | |
613 | { | |
86b17b60 | 614 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
615 | } |
616 | ||
4a64f543 | 617 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
618 | |
619 | void | |
fba45db2 | 620 | clear_breakpoint_hit_counts (void) |
c906108c SS |
621 | { |
622 | struct breakpoint *b; | |
623 | ||
624 | ALL_BREAKPOINTS (b) | |
625 | b->hit_count = 0; | |
626 | } | |
627 | ||
9add0f1b TT |
628 | /* Allocate a new counted_command_line with reference count of 1. |
629 | The new structure owns COMMANDS. */ | |
630 | ||
631 | static struct counted_command_line * | |
632 | alloc_counted_command_line (struct command_line *commands) | |
633 | { | |
634 | struct counted_command_line *result | |
635 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 636 | |
9add0f1b TT |
637 | result->refc = 1; |
638 | result->commands = commands; | |
639 | return result; | |
640 | } | |
641 | ||
642 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
643 | ||
644 | static void | |
645 | incref_counted_command_line (struct counted_command_line *cmd) | |
646 | { | |
647 | if (cmd) | |
648 | ++cmd->refc; | |
649 | } | |
650 | ||
651 | /* Decrement reference count. If the reference count reaches 0, | |
652 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
653 | nothing if *CMDP is NULL. */ | |
654 | ||
655 | static void | |
656 | decref_counted_command_line (struct counted_command_line **cmdp) | |
657 | { | |
658 | if (*cmdp) | |
659 | { | |
660 | if (--(*cmdp)->refc == 0) | |
661 | { | |
662 | free_command_lines (&(*cmdp)->commands); | |
663 | xfree (*cmdp); | |
664 | } | |
665 | *cmdp = NULL; | |
666 | } | |
667 | } | |
668 | ||
669 | /* A cleanup function that calls decref_counted_command_line. */ | |
670 | ||
671 | static void | |
672 | do_cleanup_counted_command_line (void *arg) | |
673 | { | |
674 | decref_counted_command_line (arg); | |
675 | } | |
676 | ||
677 | /* Create a cleanup that calls decref_counted_command_line on the | |
678 | argument. */ | |
679 | ||
680 | static struct cleanup * | |
681 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
682 | { | |
683 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
684 | } | |
685 | ||
c906108c | 686 | \f |
48cb2d85 VP |
687 | /* Return the breakpoint with the specified number, or NULL |
688 | if the number does not refer to an existing breakpoint. */ | |
689 | ||
690 | struct breakpoint * | |
691 | get_breakpoint (int num) | |
692 | { | |
693 | struct breakpoint *b; | |
694 | ||
695 | ALL_BREAKPOINTS (b) | |
696 | if (b->number == num) | |
697 | return b; | |
698 | ||
699 | return NULL; | |
700 | } | |
5c44784c | 701 | |
c906108c | 702 | \f |
adc36818 | 703 | |
b775012e LM |
704 | /* Mark locations as "conditions have changed" in case the target supports |
705 | evaluating conditions on its side. */ | |
706 | ||
707 | static void | |
708 | mark_breakpoint_modified (struct breakpoint *b) | |
709 | { | |
710 | struct bp_location *loc; | |
711 | ||
712 | /* This is only meaningful if the target is | |
713 | evaluating conditions and if the user has | |
714 | opted for condition evaluation on the target's | |
715 | side. */ | |
716 | if (gdb_evaluates_breakpoint_condition_p () | |
717 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
718 | return; | |
719 | ||
720 | if (!is_breakpoint (b)) | |
721 | return; | |
722 | ||
723 | for (loc = b->loc; loc; loc = loc->next) | |
724 | loc->condition_changed = condition_modified; | |
725 | } | |
726 | ||
727 | /* Mark location as "conditions have changed" in case the target supports | |
728 | evaluating conditions on its side. */ | |
729 | ||
730 | static void | |
731 | mark_breakpoint_location_modified (struct bp_location *loc) | |
732 | { | |
733 | /* This is only meaningful if the target is | |
734 | evaluating conditions and if the user has | |
735 | opted for condition evaluation on the target's | |
736 | side. */ | |
737 | if (gdb_evaluates_breakpoint_condition_p () | |
738 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
739 | ||
740 | return; | |
741 | ||
742 | if (!is_breakpoint (loc->owner)) | |
743 | return; | |
744 | ||
745 | loc->condition_changed = condition_modified; | |
746 | } | |
747 | ||
748 | /* Sets the condition-evaluation mode using the static global | |
749 | condition_evaluation_mode. */ | |
750 | ||
751 | static void | |
752 | set_condition_evaluation_mode (char *args, int from_tty, | |
753 | struct cmd_list_element *c) | |
754 | { | |
755 | struct breakpoint *b; | |
756 | const char *old_mode, *new_mode; | |
757 | ||
758 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
759 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
760 | { | |
761 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
762 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
763 | "Using host evaluation mode instead.")); | |
764 | return; | |
765 | } | |
766 | ||
767 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
768 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
769 | ||
abf1152a JK |
770 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
771 | settings was "auto". */ | |
772 | condition_evaluation_mode = condition_evaluation_mode_1; | |
773 | ||
b775012e LM |
774 | /* Only update the mode if the user picked a different one. */ |
775 | if (new_mode != old_mode) | |
776 | { | |
777 | struct bp_location *loc, **loc_tmp; | |
778 | /* If the user switched to a different evaluation mode, we | |
779 | need to synch the changes with the target as follows: | |
780 | ||
781 | "host" -> "target": Send all (valid) conditions to the target. | |
782 | "target" -> "host": Remove all the conditions from the target. | |
783 | */ | |
784 | ||
b775012e LM |
785 | if (new_mode == condition_evaluation_target) |
786 | { | |
787 | /* Mark everything modified and synch conditions with the | |
788 | target. */ | |
789 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
790 | mark_breakpoint_location_modified (loc); | |
791 | } | |
792 | else | |
793 | { | |
794 | /* Manually mark non-duplicate locations to synch conditions | |
795 | with the target. We do this to remove all the conditions the | |
796 | target knows about. */ | |
797 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
798 | if (is_breakpoint (loc->owner) && loc->inserted) | |
799 | loc->needs_update = 1; | |
800 | } | |
801 | ||
802 | /* Do the update. */ | |
803 | update_global_location_list (1); | |
804 | } | |
805 | ||
806 | return; | |
807 | } | |
808 | ||
809 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
810 | what "auto" is translating to. */ | |
811 | ||
812 | static void | |
813 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
814 | struct cmd_list_element *c, const char *value) | |
815 | { | |
816 | if (condition_evaluation_mode == condition_evaluation_auto) | |
817 | fprintf_filtered (file, | |
818 | _("Breakpoint condition evaluation " | |
819 | "mode is %s (currently %s).\n"), | |
820 | value, | |
821 | breakpoint_condition_evaluation_mode ()); | |
822 | else | |
823 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
824 | value); | |
825 | } | |
826 | ||
827 | /* A comparison function for bp_location AP and BP that is used by | |
828 | bsearch. This comparison function only cares about addresses, unlike | |
829 | the more general bp_location_compare function. */ | |
830 | ||
831 | static int | |
832 | bp_location_compare_addrs (const void *ap, const void *bp) | |
833 | { | |
834 | struct bp_location *a = *(void **) ap; | |
835 | struct bp_location *b = *(void **) bp; | |
836 | ||
837 | if (a->address == b->address) | |
838 | return 0; | |
839 | else | |
840 | return ((a->address > b->address) - (a->address < b->address)); | |
841 | } | |
842 | ||
843 | /* Helper function to skip all bp_locations with addresses | |
844 | less than ADDRESS. It returns the first bp_location that | |
845 | is greater than or equal to ADDRESS. If none is found, just | |
846 | return NULL. */ | |
847 | ||
848 | static struct bp_location ** | |
849 | get_first_locp_gte_addr (CORE_ADDR address) | |
850 | { | |
851 | struct bp_location dummy_loc; | |
852 | struct bp_location *dummy_locp = &dummy_loc; | |
853 | struct bp_location **locp_found = NULL; | |
854 | ||
855 | /* Initialize the dummy location's address field. */ | |
856 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
857 | dummy_loc.address = address; | |
858 | ||
859 | /* Find a close match to the first location at ADDRESS. */ | |
860 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
861 | sizeof (struct bp_location **), | |
862 | bp_location_compare_addrs); | |
863 | ||
864 | /* Nothing was found, nothing left to do. */ | |
865 | if (locp_found == NULL) | |
866 | return NULL; | |
867 | ||
868 | /* We may have found a location that is at ADDRESS but is not the first in the | |
869 | location's list. Go backwards (if possible) and locate the first one. */ | |
870 | while ((locp_found - 1) >= bp_location | |
871 | && (*(locp_found - 1))->address == address) | |
872 | locp_found--; | |
873 | ||
874 | return locp_found; | |
875 | } | |
876 | ||
adc36818 PM |
877 | void |
878 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
879 | int from_tty) | |
880 | { | |
3a5c3e22 PA |
881 | xfree (b->cond_string); |
882 | b->cond_string = NULL; | |
adc36818 | 883 | |
3a5c3e22 | 884 | if (is_watchpoint (b)) |
adc36818 | 885 | { |
3a5c3e22 PA |
886 | struct watchpoint *w = (struct watchpoint *) b; |
887 | ||
888 | xfree (w->cond_exp); | |
889 | w->cond_exp = NULL; | |
890 | } | |
891 | else | |
892 | { | |
893 | struct bp_location *loc; | |
894 | ||
895 | for (loc = b->loc; loc; loc = loc->next) | |
896 | { | |
897 | xfree (loc->cond); | |
898 | loc->cond = NULL; | |
b775012e LM |
899 | |
900 | /* No need to free the condition agent expression | |
901 | bytecode (if we have one). We will handle this | |
902 | when we go through update_global_location_list. */ | |
3a5c3e22 | 903 | } |
adc36818 | 904 | } |
adc36818 PM |
905 | |
906 | if (*exp == 0) | |
907 | { | |
908 | if (from_tty) | |
909 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
910 | } | |
911 | else | |
912 | { | |
913 | char *arg = exp; | |
cc59ec59 | 914 | |
adc36818 PM |
915 | /* I don't know if it matters whether this is the string the user |
916 | typed in or the decompiled expression. */ | |
917 | b->cond_string = xstrdup (arg); | |
918 | b->condition_not_parsed = 0; | |
919 | ||
920 | if (is_watchpoint (b)) | |
921 | { | |
3a5c3e22 PA |
922 | struct watchpoint *w = (struct watchpoint *) b; |
923 | ||
adc36818 PM |
924 | innermost_block = NULL; |
925 | arg = exp; | |
3a5c3e22 | 926 | w->cond_exp = parse_exp_1 (&arg, 0, 0); |
adc36818 PM |
927 | if (*arg) |
928 | error (_("Junk at end of expression")); | |
3a5c3e22 | 929 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
930 | } |
931 | else | |
932 | { | |
3a5c3e22 PA |
933 | struct bp_location *loc; |
934 | ||
adc36818 PM |
935 | for (loc = b->loc; loc; loc = loc->next) |
936 | { | |
937 | arg = exp; | |
938 | loc->cond = | |
939 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
940 | if (*arg) | |
941 | error (_("Junk at end of expression")); | |
942 | } | |
943 | } | |
944 | } | |
b775012e LM |
945 | mark_breakpoint_modified (b); |
946 | ||
adc36818 | 947 | breakpoints_changed (); |
8d3788bd | 948 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
949 | } |
950 | ||
c906108c SS |
951 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
952 | ||
953 | static void | |
fba45db2 | 954 | condition_command (char *arg, int from_tty) |
c906108c | 955 | { |
52f0bd74 | 956 | struct breakpoint *b; |
c906108c | 957 | char *p; |
52f0bd74 | 958 | int bnum; |
c906108c SS |
959 | |
960 | if (arg == 0) | |
e2e0b3e5 | 961 | error_no_arg (_("breakpoint number")); |
c906108c SS |
962 | |
963 | p = arg; | |
964 | bnum = get_number (&p); | |
5c44784c | 965 | if (bnum == 0) |
8a3fe4f8 | 966 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
967 | |
968 | ALL_BREAKPOINTS (b) | |
969 | if (b->number == bnum) | |
2f069f6f | 970 | { |
7371cf6d PM |
971 | /* Check if this breakpoint has a Python object assigned to |
972 | it, and if it has a definition of the "stop" | |
973 | method. This method and conditions entered into GDB from | |
974 | the CLI are mutually exclusive. */ | |
975 | if (b->py_bp_object | |
976 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
977 | error (_("Cannot set a condition where a Python 'stop' " | |
978 | "method has been defined in the breakpoint.")); | |
2566ad2d | 979 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
980 | |
981 | if (is_breakpoint (b)) | |
982 | update_global_location_list (1); | |
983 | ||
2f069f6f JB |
984 | return; |
985 | } | |
c906108c | 986 | |
8a3fe4f8 | 987 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
988 | } |
989 | ||
a7bdde9e VP |
990 | /* Check that COMMAND do not contain commands that are suitable |
991 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
992 | Throw if any such commands is found. */ |
993 | ||
a7bdde9e VP |
994 | static void |
995 | check_no_tracepoint_commands (struct command_line *commands) | |
996 | { | |
997 | struct command_line *c; | |
cc59ec59 | 998 | |
a7bdde9e VP |
999 | for (c = commands; c; c = c->next) |
1000 | { | |
1001 | int i; | |
1002 | ||
1003 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1004 | error (_("The 'while-stepping' command can " |
1005 | "only be used for tracepoints")); | |
a7bdde9e VP |
1006 | |
1007 | for (i = 0; i < c->body_count; ++i) | |
1008 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1009 | ||
1010 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1011 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1012 | command directly. */ |
1013 | if (strstr (c->line, "collect ") == c->line) | |
1014 | error (_("The 'collect' command can only be used for tracepoints")); | |
1015 | ||
51661e93 VP |
1016 | if (strstr (c->line, "teval ") == c->line) |
1017 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1018 | } |
1019 | } | |
1020 | ||
d77f58be SS |
1021 | /* Encapsulate tests for different types of tracepoints. */ |
1022 | ||
d9b3f62e PA |
1023 | static int |
1024 | is_tracepoint_type (enum bptype type) | |
1025 | { | |
1026 | return (type == bp_tracepoint | |
1027 | || type == bp_fast_tracepoint | |
1028 | || type == bp_static_tracepoint); | |
1029 | } | |
1030 | ||
a7bdde9e | 1031 | int |
d77f58be | 1032 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1033 | { |
d9b3f62e | 1034 | return is_tracepoint_type (b->type); |
a7bdde9e | 1035 | } |
d9b3f62e | 1036 | |
e5dd4106 | 1037 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1038 | breakpoint. This function will throw an exception if a problem is |
1039 | found. */ | |
48cb2d85 | 1040 | |
95a42b64 TT |
1041 | static void |
1042 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1043 | struct command_line *commands) | |
48cb2d85 | 1044 | { |
d77f58be | 1045 | if (is_tracepoint (b)) |
a7bdde9e | 1046 | { |
4a64f543 MS |
1047 | /* We need to verify that each top-level element of commands is |
1048 | valid for tracepoints, that there's at most one | |
1049 | while-stepping element, and that while-stepping's body has | |
1050 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
1051 | struct command_line *c; |
1052 | struct command_line *while_stepping = 0; | |
1053 | for (c = commands; c; c = c->next) | |
1054 | { | |
a7bdde9e VP |
1055 | if (c->control_type == while_stepping_control) |
1056 | { | |
1057 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1058 | error (_("The 'while-stepping' command " |
1059 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1060 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1061 | error (_("The 'while-stepping' command " |
1062 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1063 | |
1064 | if (while_stepping) | |
3e43a32a MS |
1065 | error (_("The 'while-stepping' command " |
1066 | "can be used only once")); | |
a7bdde9e VP |
1067 | else |
1068 | while_stepping = c; | |
1069 | } | |
1070 | } | |
1071 | if (while_stepping) | |
1072 | { | |
1073 | struct command_line *c2; | |
1074 | ||
1075 | gdb_assert (while_stepping->body_count == 1); | |
1076 | c2 = while_stepping->body_list[0]; | |
1077 | for (; c2; c2 = c2->next) | |
1078 | { | |
a7bdde9e VP |
1079 | if (c2->control_type == while_stepping_control) |
1080 | error (_("The 'while-stepping' command cannot be nested")); | |
1081 | } | |
1082 | } | |
1083 | } | |
1084 | else | |
1085 | { | |
1086 | check_no_tracepoint_commands (commands); | |
1087 | } | |
95a42b64 TT |
1088 | } |
1089 | ||
0fb4aa4b PA |
1090 | /* Return a vector of all the static tracepoints set at ADDR. The |
1091 | caller is responsible for releasing the vector. */ | |
1092 | ||
1093 | VEC(breakpoint_p) * | |
1094 | static_tracepoints_here (CORE_ADDR addr) | |
1095 | { | |
1096 | struct breakpoint *b; | |
1097 | VEC(breakpoint_p) *found = 0; | |
1098 | struct bp_location *loc; | |
1099 | ||
1100 | ALL_BREAKPOINTS (b) | |
1101 | if (b->type == bp_static_tracepoint) | |
1102 | { | |
1103 | for (loc = b->loc; loc; loc = loc->next) | |
1104 | if (loc->address == addr) | |
1105 | VEC_safe_push(breakpoint_p, found, b); | |
1106 | } | |
1107 | ||
1108 | return found; | |
1109 | } | |
1110 | ||
95a42b64 | 1111 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1112 | validate that only allowed commands are included. */ |
95a42b64 TT |
1113 | |
1114 | void | |
4a64f543 MS |
1115 | breakpoint_set_commands (struct breakpoint *b, |
1116 | struct command_line *commands) | |
95a42b64 TT |
1117 | { |
1118 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1119 | |
9add0f1b TT |
1120 | decref_counted_command_line (&b->commands); |
1121 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 | 1122 | breakpoints_changed (); |
8d3788bd | 1123 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1124 | } |
1125 | ||
45a43567 TT |
1126 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1127 | is not the same as the "silent" that may appear in the breakpoint's | |
1128 | commands. */ | |
1129 | ||
1130 | void | |
1131 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1132 | { | |
1133 | int old_silent = b->silent; | |
1134 | ||
1135 | b->silent = silent; | |
1136 | if (old_silent != silent) | |
8d3788bd | 1137 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1138 | } |
1139 | ||
1140 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1141 | breakpoint work for any thread. */ | |
1142 | ||
1143 | void | |
1144 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1145 | { | |
1146 | int old_thread = b->thread; | |
1147 | ||
1148 | b->thread = thread; | |
1149 | if (old_thread != thread) | |
8d3788bd | 1150 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1151 | } |
1152 | ||
1153 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1154 | breakpoint work for any task. */ | |
1155 | ||
1156 | void | |
1157 | breakpoint_set_task (struct breakpoint *b, int task) | |
1158 | { | |
1159 | int old_task = b->task; | |
1160 | ||
1161 | b->task = task; | |
1162 | if (old_task != task) | |
8d3788bd | 1163 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1164 | } |
1165 | ||
95a42b64 TT |
1166 | void |
1167 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1168 | { |
1169 | struct breakpoint *b = closure; | |
cc59ec59 | 1170 | |
a7bdde9e VP |
1171 | validate_actionline (&line, b); |
1172 | } | |
1173 | ||
95a42b64 TT |
1174 | /* A structure used to pass information through |
1175 | map_breakpoint_numbers. */ | |
1176 | ||
1177 | struct commands_info | |
1178 | { | |
1179 | /* True if the command was typed at a tty. */ | |
1180 | int from_tty; | |
86b17b60 PA |
1181 | |
1182 | /* The breakpoint range spec. */ | |
1183 | char *arg; | |
1184 | ||
95a42b64 TT |
1185 | /* Non-NULL if the body of the commands are being read from this |
1186 | already-parsed command. */ | |
1187 | struct command_line *control; | |
86b17b60 | 1188 | |
95a42b64 TT |
1189 | /* The command lines read from the user, or NULL if they have not |
1190 | yet been read. */ | |
1191 | struct counted_command_line *cmd; | |
1192 | }; | |
1193 | ||
1194 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1195 | commands_command. */ | |
1196 | ||
c906108c | 1197 | static void |
95a42b64 | 1198 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1199 | { |
95a42b64 | 1200 | struct commands_info *info = data; |
c906108c | 1201 | |
95a42b64 TT |
1202 | if (info->cmd == NULL) |
1203 | { | |
1204 | struct command_line *l; | |
5c44784c | 1205 | |
95a42b64 TT |
1206 | if (info->control != NULL) |
1207 | l = copy_command_lines (info->control->body_list[0]); | |
1208 | else | |
86b17b60 PA |
1209 | { |
1210 | struct cleanup *old_chain; | |
1211 | char *str; | |
c5aa993b | 1212 | |
3e43a32a MS |
1213 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1214 | "%s, one per line."), | |
86b17b60 PA |
1215 | info->arg); |
1216 | ||
1217 | old_chain = make_cleanup (xfree, str); | |
1218 | ||
1219 | l = read_command_lines (str, | |
1220 | info->from_tty, 1, | |
d77f58be | 1221 | (is_tracepoint (b) |
86b17b60 PA |
1222 | ? check_tracepoint_command : 0), |
1223 | b); | |
1224 | ||
1225 | do_cleanups (old_chain); | |
1226 | } | |
a7bdde9e | 1227 | |
95a42b64 TT |
1228 | info->cmd = alloc_counted_command_line (l); |
1229 | } | |
1230 | ||
1231 | /* If a breakpoint was on the list more than once, we don't need to | |
1232 | do anything. */ | |
1233 | if (b->commands != info->cmd) | |
1234 | { | |
1235 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1236 | incref_counted_command_line (info->cmd); | |
1237 | decref_counted_command_line (&b->commands); | |
1238 | b->commands = info->cmd; | |
1239 | breakpoints_changed (); | |
8d3788bd | 1240 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1241 | } |
95a42b64 TT |
1242 | } |
1243 | ||
1244 | static void | |
4a64f543 MS |
1245 | commands_command_1 (char *arg, int from_tty, |
1246 | struct command_line *control) | |
95a42b64 TT |
1247 | { |
1248 | struct cleanup *cleanups; | |
1249 | struct commands_info info; | |
1250 | ||
1251 | info.from_tty = from_tty; | |
1252 | info.control = control; | |
1253 | info.cmd = NULL; | |
1254 | /* If we read command lines from the user, then `info' will hold an | |
1255 | extra reference to the commands that we must clean up. */ | |
1256 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1257 | ||
1258 | if (arg == NULL || !*arg) | |
1259 | { | |
86b17b60 | 1260 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1261 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1262 | breakpoint_count); | |
95a42b64 TT |
1263 | else if (breakpoint_count > 0) |
1264 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1265 | else |
1266 | { | |
1267 | /* So that we don't try to free the incoming non-NULL | |
1268 | argument in the cleanup below. Mapping breakpoint | |
1269 | numbers will fail in this case. */ | |
1270 | arg = NULL; | |
1271 | } | |
95a42b64 | 1272 | } |
9766ced4 SS |
1273 | else |
1274 | /* The command loop has some static state, so we need to preserve | |
1275 | our argument. */ | |
1276 | arg = xstrdup (arg); | |
86b17b60 PA |
1277 | |
1278 | if (arg != NULL) | |
1279 | make_cleanup (xfree, arg); | |
1280 | ||
1281 | info.arg = arg; | |
95a42b64 TT |
1282 | |
1283 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1284 | ||
1285 | if (info.cmd == NULL) | |
1286 | error (_("No breakpoints specified.")); | |
1287 | ||
1288 | do_cleanups (cleanups); | |
1289 | } | |
1290 | ||
1291 | static void | |
1292 | commands_command (char *arg, int from_tty) | |
1293 | { | |
1294 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1295 | } |
40c03ae8 EZ |
1296 | |
1297 | /* Like commands_command, but instead of reading the commands from | |
1298 | input stream, takes them from an already parsed command structure. | |
1299 | ||
1300 | This is used by cli-script.c to DTRT with breakpoint commands | |
1301 | that are part of if and while bodies. */ | |
1302 | enum command_control_type | |
1303 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1304 | { | |
95a42b64 TT |
1305 | commands_command_1 (arg, 0, cmd); |
1306 | return simple_control; | |
40c03ae8 | 1307 | } |
876fa593 JK |
1308 | |
1309 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1310 | ||
1311 | static int | |
1312 | bp_location_has_shadow (struct bp_location *bl) | |
1313 | { | |
1314 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1315 | return 0; | |
1316 | if (!bl->inserted) | |
1317 | return 0; | |
1318 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1319 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1320 | return 0; |
1321 | return 1; | |
1322 | } | |
1323 | ||
8defab1a | 1324 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1325 | by replacing any memory breakpoints with their shadowed contents. |
1326 | ||
35c63cd8 JB |
1327 | If READBUF is not NULL, this buffer must not overlap with any of |
1328 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1329 | a failed assertion internal error will be raised. | |
1330 | ||
876fa593 | 1331 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1332 | bl->address - bp_location_placed_address_before_address_max |
1333 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1334 | The range we were requested to resolve shadows for is: |
1335 | memaddr ... memaddr + len | |
1336 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1337 | memaddr + len <= (bl->address |
1338 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1339 | and: |
35df4500 | 1340 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1341 | |
8defab1a | 1342 | void |
f0ba3972 PA |
1343 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1344 | const gdb_byte *writebuf_org, | |
1345 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1346 | { |
4a64f543 MS |
1347 | /* Left boundary, right boundary and median element of our binary |
1348 | search. */ | |
876fa593 JK |
1349 | unsigned bc_l, bc_r, bc; |
1350 | ||
4a64f543 MS |
1351 | /* Find BC_L which is a leftmost element which may affect BUF |
1352 | content. It is safe to report lower value but a failure to | |
1353 | report higher one. */ | |
876fa593 JK |
1354 | |
1355 | bc_l = 0; | |
1356 | bc_r = bp_location_count; | |
1357 | while (bc_l + 1 < bc_r) | |
1358 | { | |
35df4500 | 1359 | struct bp_location *bl; |
876fa593 JK |
1360 | |
1361 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1362 | bl = bp_location[bc]; |
876fa593 | 1363 | |
4a64f543 MS |
1364 | /* Check first BL->ADDRESS will not overflow due to the added |
1365 | constant. Then advance the left boundary only if we are sure | |
1366 | the BC element can in no way affect the BUF content (MEMADDR | |
1367 | to MEMADDR + LEN range). | |
876fa593 | 1368 | |
4a64f543 MS |
1369 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1370 | offset so that we cannot miss a breakpoint with its shadow | |
1371 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1372 | |
35df4500 TJB |
1373 | if ((bl->address + bp_location_shadow_len_after_address_max |
1374 | >= bl->address) | |
1375 | && (bl->address + bp_location_shadow_len_after_address_max | |
1376 | <= memaddr)) | |
876fa593 JK |
1377 | bc_l = bc; |
1378 | else | |
1379 | bc_r = bc; | |
1380 | } | |
1381 | ||
128070bb PA |
1382 | /* Due to the binary search above, we need to make sure we pick the |
1383 | first location that's at BC_L's address. E.g., if there are | |
1384 | multiple locations at the same address, BC_L may end up pointing | |
1385 | at a duplicate location, and miss the "master"/"inserted" | |
1386 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1387 | B: | |
1388 | ||
1389 | L1@A, L2@A, L3@B, ... | |
1390 | ||
1391 | BC_L could end up pointing at location L2, while the "master" | |
1392 | location could be L1. Since the `loc->inserted' flag is only set | |
1393 | on "master" locations, we'd forget to restore the shadow of L1 | |
1394 | and L2. */ | |
1395 | while (bc_l > 0 | |
1396 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1397 | bc_l--; | |
1398 | ||
876fa593 JK |
1399 | /* Now do full processing of the found relevant range of elements. */ |
1400 | ||
1401 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1402 | { |
35df4500 | 1403 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1404 | CORE_ADDR bp_addr = 0; |
1405 | int bp_size = 0; | |
1406 | int bptoffset = 0; | |
1407 | ||
35df4500 TJB |
1408 | /* bp_location array has BL->OWNER always non-NULL. */ |
1409 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1410 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1411 | bl->owner->number); |
ffce0d52 | 1412 | |
e5dd4106 | 1413 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1414 | content. */ |
1415 | ||
35df4500 TJB |
1416 | if (bl->address >= bp_location_placed_address_before_address_max |
1417 | && memaddr + len <= (bl->address | |
1418 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1419 | break; |
1420 | ||
35df4500 | 1421 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1422 | continue; |
35df4500 | 1423 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1424 | current_program_space->aspace, 0)) |
1425 | continue; | |
1426 | ||
c5aa993b JM |
1427 | /* Addresses and length of the part of the breakpoint that |
1428 | we need to copy. */ | |
35df4500 TJB |
1429 | bp_addr = bl->target_info.placed_address; |
1430 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1431 | |
c5aa993b JM |
1432 | if (bp_addr + bp_size <= memaddr) |
1433 | /* The breakpoint is entirely before the chunk of memory we | |
1434 | are reading. */ | |
1435 | continue; | |
8defab1a | 1436 | |
c5aa993b JM |
1437 | if (bp_addr >= memaddr + len) |
1438 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1439 | reading. */ |
c5aa993b | 1440 | continue; |
c5aa993b | 1441 | |
8defab1a DJ |
1442 | /* Offset within shadow_contents. */ |
1443 | if (bp_addr < memaddr) | |
1444 | { | |
1445 | /* Only copy the second part of the breakpoint. */ | |
1446 | bp_size -= memaddr - bp_addr; | |
1447 | bptoffset = memaddr - bp_addr; | |
1448 | bp_addr = memaddr; | |
1449 | } | |
c5aa993b | 1450 | |
8defab1a DJ |
1451 | if (bp_addr + bp_size > memaddr + len) |
1452 | { | |
1453 | /* Only copy the first part of the breakpoint. */ | |
1454 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1455 | } | |
c5aa993b | 1456 | |
f0ba3972 PA |
1457 | if (readbuf != NULL) |
1458 | { | |
35c63cd8 JB |
1459 | /* Verify that the readbuf buffer does not overlap with |
1460 | the shadow_contents buffer. */ | |
1461 | gdb_assert (bl->target_info.shadow_contents >= readbuf + len | |
1462 | || readbuf >= (bl->target_info.shadow_contents | |
1463 | + bl->target_info.shadow_len)); | |
1464 | ||
f0ba3972 PA |
1465 | /* Update the read buffer with this inserted breakpoint's |
1466 | shadow. */ | |
1467 | memcpy (readbuf + bp_addr - memaddr, | |
1468 | bl->target_info.shadow_contents + bptoffset, bp_size); | |
1469 | } | |
1470 | else | |
1471 | { | |
1472 | struct gdbarch *gdbarch = bl->gdbarch; | |
1473 | const unsigned char *bp; | |
1474 | CORE_ADDR placed_address = bl->target_info.placed_address; | |
1475 | unsigned placed_size = bl->target_info.placed_size; | |
1476 | ||
1477 | /* Update the shadow with what we want to write to memory. */ | |
1478 | memcpy (bl->target_info.shadow_contents + bptoffset, | |
1479 | writebuf_org + bp_addr - memaddr, bp_size); | |
1480 | ||
1481 | /* Determine appropriate breakpoint contents and size for this | |
1482 | address. */ | |
1483 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1484 | ||
1485 | /* Update the final write buffer with this inserted | |
1486 | breakpoint's INSN. */ | |
1487 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1488 | } | |
c5aa993b | 1489 | } |
c906108c | 1490 | } |
c906108c | 1491 | \f |
c5aa993b | 1492 | |
b775012e LM |
1493 | /* Return true if BPT is either a software breakpoint or a hardware |
1494 | breakpoint. */ | |
1495 | ||
1496 | int | |
1497 | is_breakpoint (const struct breakpoint *bpt) | |
1498 | { | |
1499 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1500 | || bpt->type == bp_hardware_breakpoint |
1501 | || bpt->type == bp_dprintf); | |
b775012e LM |
1502 | } |
1503 | ||
60e1c644 PA |
1504 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1505 | ||
a5606eee | 1506 | static int |
d77f58be | 1507 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1508 | { |
1509 | return (bpt->type == bp_hardware_watchpoint | |
1510 | || bpt->type == bp_read_watchpoint | |
1511 | || bpt->type == bp_access_watchpoint); | |
1512 | } | |
7270d8f2 | 1513 | |
60e1c644 PA |
1514 | /* Return true if BPT is of any watchpoint kind, hardware or |
1515 | software. */ | |
1516 | ||
3a5c3e22 | 1517 | int |
d77f58be | 1518 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1519 | { |
1520 | return (is_hardware_watchpoint (bpt) | |
1521 | || bpt->type == bp_watchpoint); | |
1522 | } | |
1523 | ||
3a5c3e22 PA |
1524 | /* Returns true if the current thread and its running state are safe |
1525 | to evaluate or update watchpoint B. Watchpoints on local | |
1526 | expressions need to be evaluated in the context of the thread that | |
1527 | was current when the watchpoint was created, and, that thread needs | |
1528 | to be stopped to be able to select the correct frame context. | |
1529 | Watchpoints on global expressions can be evaluated on any thread, | |
1530 | and in any state. It is presently left to the target allowing | |
1531 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1532 | |
1533 | static int | |
3a5c3e22 | 1534 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1535 | { |
d0d8b0c6 JK |
1536 | return (b->base.pspace == current_program_space |
1537 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1538 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1539 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1540 | } |
1541 | ||
d0fb5eae JK |
1542 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1543 | associated bp_watchpoint_scope breakpoint. */ | |
1544 | ||
1545 | static void | |
3a5c3e22 | 1546 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1547 | { |
3a5c3e22 | 1548 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1549 | |
1550 | if (b->related_breakpoint != b) | |
1551 | { | |
1552 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1553 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1554 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1555 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1556 | b->related_breakpoint = b; | |
1557 | } | |
1558 | b->disposition = disp_del_at_next_stop; | |
1559 | } | |
1560 | ||
567e1b4e JB |
1561 | /* Assuming that B is a watchpoint: |
1562 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1563 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1564 | - Evaluate the condition if there is one, and store the result |
1565 | in b->loc->cond. | |
a5606eee VP |
1566 | - Update the list of values that must be watched in B->loc. |
1567 | ||
4a64f543 MS |
1568 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1569 | nothing. If this is local watchpoint that is out of scope, delete | |
1570 | it. | |
1571 | ||
1572 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1573 | removed + inserted on each stop here. Normal breakpoints must | |
1574 | never be removed because they might be missed by a running thread | |
1575 | when debugging in non-stop mode. On the other hand, hardware | |
1576 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1577 | to each LWP since they are stored in each LWP's hardware debug | |
1578 | registers. Therefore, such LWP must be stopped first in order to | |
1579 | be able to modify its hardware watchpoints. | |
1580 | ||
1581 | Hardware watchpoints must be reset exactly once after being | |
1582 | presented to the user. It cannot be done sooner, because it would | |
1583 | reset the data used to present the watchpoint hit to the user. And | |
1584 | it must not be done later because it could display the same single | |
1585 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1586 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1587 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1588 | not user-visible - its hit is suppressed if the memory content has | |
1589 | not changed. | |
1590 | ||
1591 | The following constraints influence the location where we can reset | |
1592 | hardware watchpoints: | |
1593 | ||
1594 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1595 | called several times when GDB stops. | |
1596 | ||
1597 | [linux] | |
1598 | * Multiple hardware watchpoints can be hit at the same time, | |
1599 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1600 | hit at a time as the reason for stopping, and all the other hits | |
1601 | are presented later, one after the other, each time the user | |
1602 | requests the execution to be resumed. Execution is not resumed | |
1603 | for the threads still having pending hit event stored in | |
1604 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1605 | the inferior on the first stop the thread hit event is kept being | |
1606 | reported from its cached value by linux_nat_stopped_data_address | |
1607 | until the real thread resume happens after the watchpoint gets | |
1608 | presented and thus its LWP_INFO->STATUS gets reset. | |
1609 | ||
1610 | Therefore the hardware watchpoint hit can get safely reset on the | |
1611 | watchpoint removal from inferior. */ | |
a79d3c27 | 1612 | |
b40ce68a | 1613 | static void |
3a5c3e22 | 1614 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1615 | { |
a5606eee | 1616 | int within_current_scope; |
a5606eee | 1617 | struct frame_id saved_frame_id; |
66076460 | 1618 | int frame_saved; |
a5606eee | 1619 | |
f6bc2008 PA |
1620 | /* If this is a local watchpoint, we only want to check if the |
1621 | watchpoint frame is in scope if the current thread is the thread | |
1622 | that was used to create the watchpoint. */ | |
1623 | if (!watchpoint_in_thread_scope (b)) | |
1624 | return; | |
1625 | ||
3a5c3e22 | 1626 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1627 | return; |
1628 | ||
66076460 | 1629 | frame_saved = 0; |
a5606eee VP |
1630 | |
1631 | /* Determine if the watchpoint is within scope. */ | |
1632 | if (b->exp_valid_block == NULL) | |
1633 | within_current_scope = 1; | |
1634 | else | |
1635 | { | |
b5db5dfc UW |
1636 | struct frame_info *fi = get_current_frame (); |
1637 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1638 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1639 | ||
1640 | /* If we're in a function epilogue, unwinding may not work | |
1641 | properly, so do not attempt to recreate locations at this | |
1642 | point. See similar comments in watchpoint_check. */ | |
1643 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1644 | return; | |
66076460 DJ |
1645 | |
1646 | /* Save the current frame's ID so we can restore it after | |
1647 | evaluating the watchpoint expression on its own frame. */ | |
1648 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1649 | took a frame parameter, so that we didn't have to change the | |
1650 | selected frame. */ | |
1651 | frame_saved = 1; | |
1652 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1653 | ||
a5606eee VP |
1654 | fi = frame_find_by_id (b->watchpoint_frame); |
1655 | within_current_scope = (fi != NULL); | |
1656 | if (within_current_scope) | |
1657 | select_frame (fi); | |
1658 | } | |
1659 | ||
b5db5dfc UW |
1660 | /* We don't free locations. They are stored in the bp_location array |
1661 | and update_global_location_list will eventually delete them and | |
1662 | remove breakpoints if needed. */ | |
3a5c3e22 | 1663 | b->base.loc = NULL; |
b5db5dfc | 1664 | |
a5606eee VP |
1665 | if (within_current_scope && reparse) |
1666 | { | |
1667 | char *s; | |
d63d0675 | 1668 | |
a5606eee VP |
1669 | if (b->exp) |
1670 | { | |
1671 | xfree (b->exp); | |
1672 | b->exp = NULL; | |
1673 | } | |
d63d0675 | 1674 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1675 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1676 | /* If the meaning of expression itself changed, the old value is | |
1677 | no longer relevant. We don't want to report a watchpoint hit | |
1678 | to the user when the old value and the new value may actually | |
1679 | be completely different objects. */ | |
1680 | value_free (b->val); | |
fa4727a6 DJ |
1681 | b->val = NULL; |
1682 | b->val_valid = 0; | |
60e1c644 PA |
1683 | |
1684 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1685 | expression is stored in the breakpoint object, not in the | |
1686 | locations (re)created below. */ | |
3a5c3e22 | 1687 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1688 | { |
1689 | if (b->cond_exp != NULL) | |
1690 | { | |
1691 | xfree (b->cond_exp); | |
1692 | b->cond_exp = NULL; | |
1693 | } | |
1694 | ||
3a5c3e22 | 1695 | s = b->base.cond_string; |
60e1c644 PA |
1696 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); |
1697 | } | |
a5606eee | 1698 | } |
a5606eee VP |
1699 | |
1700 | /* If we failed to parse the expression, for example because | |
1701 | it refers to a global variable in a not-yet-loaded shared library, | |
1702 | don't try to insert watchpoint. We don't automatically delete | |
1703 | such watchpoint, though, since failure to parse expression | |
1704 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1705 | if ( !target_has_execution) |
1706 | { | |
1707 | /* Without execution, memory can't change. No use to try and | |
1708 | set watchpoint locations. The watchpoint will be reset when | |
1709 | the target gains execution, through breakpoint_re_set. */ | |
1710 | } | |
1711 | else if (within_current_scope && b->exp) | |
a5606eee | 1712 | { |
0cf6dd15 | 1713 | int pc = 0; |
fa4727a6 | 1714 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1715 | struct program_space *frame_pspace; |
a5606eee | 1716 | |
0cf6dd15 | 1717 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1718 | |
a5606eee VP |
1719 | /* Avoid setting b->val if it's already set. The meaning of |
1720 | b->val is 'the last value' user saw, and we should update | |
1721 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1722 | happens, the code that reports it updates b->val directly. |
1723 | We don't keep track of the memory value for masked | |
1724 | watchpoints. */ | |
3a5c3e22 | 1725 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1726 | { |
1727 | b->val = v; | |
1728 | b->val_valid = 1; | |
1729 | } | |
a5606eee | 1730 | |
2d134ed3 PA |
1731 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1732 | ||
a5606eee | 1733 | /* Look at each value on the value chain. */ |
9fa40276 | 1734 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1735 | { |
1736 | /* If it's a memory location, and GDB actually needed | |
1737 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1738 | must watch it. If the first value returned is |
1739 | still lazy, that means an error occurred reading it; | |
1740 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1741 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1742 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1743 | { |
1744 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1745 | |
a5606eee VP |
1746 | /* We only watch structs and arrays if user asked |
1747 | for it explicitly, never if they just happen to | |
1748 | appear in the middle of some value chain. */ | |
fa4727a6 | 1749 | if (v == result |
a5606eee VP |
1750 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1751 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1752 | { | |
1753 | CORE_ADDR addr; | |
1754 | int len, type; | |
1755 | struct bp_location *loc, **tmp; | |
1756 | ||
42ae5230 | 1757 | addr = value_address (v); |
a5606eee VP |
1758 | len = TYPE_LENGTH (value_type (v)); |
1759 | type = hw_write; | |
3a5c3e22 | 1760 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1761 | type = hw_read; |
3a5c3e22 | 1762 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1763 | type = hw_access; |
3a5c3e22 PA |
1764 | |
1765 | loc = allocate_bp_location (&b->base); | |
1766 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1767 | ; |
1768 | *tmp = loc; | |
a6d9a66e | 1769 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1770 | |
1771 | loc->pspace = frame_pspace; | |
a5606eee VP |
1772 | loc->address = addr; |
1773 | loc->length = len; | |
1774 | loc->watchpoint_type = type; | |
1775 | } | |
1776 | } | |
9fa40276 TJB |
1777 | } |
1778 | ||
1779 | /* Change the type of breakpoint between hardware assisted or | |
1780 | an ordinary watchpoint depending on the hardware support | |
1781 | and free hardware slots. REPARSE is set when the inferior | |
1782 | is started. */ | |
a9634178 | 1783 | if (reparse) |
9fa40276 | 1784 | { |
e09342b5 | 1785 | int reg_cnt; |
9fa40276 TJB |
1786 | enum bp_loc_type loc_type; |
1787 | struct bp_location *bl; | |
a5606eee | 1788 | |
a9634178 | 1789 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1790 | |
1791 | if (reg_cnt) | |
9fa40276 TJB |
1792 | { |
1793 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1794 | enum bptype type; |
9fa40276 | 1795 | |
a9634178 TJB |
1796 | /* Use an exact watchpoint when there's only one memory region to be |
1797 | watched, and only one debug register is needed to watch it. */ | |
1798 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1799 | ||
9fa40276 | 1800 | /* We need to determine how many resources are already |
e09342b5 TJB |
1801 | used for all other hardware watchpoints plus this one |
1802 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1803 | this watchpoint in as well. */ |
1804 | ||
1805 | /* If this is a software watchpoint, we try to turn it | |
1806 | to a hardware one -- count resources as if B was of | |
1807 | hardware watchpoint type. */ | |
1808 | type = b->base.type; | |
1809 | if (type == bp_watchpoint) | |
1810 | type = bp_hardware_watchpoint; | |
1811 | ||
1812 | /* This watchpoint may or may not have been placed on | |
1813 | the list yet at this point (it won't be in the list | |
1814 | if we're trying to create it for the first time, | |
1815 | through watch_command), so always account for it | |
1816 | manually. */ | |
1817 | ||
1818 | /* Count resources used by all watchpoints except B. */ | |
1819 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1820 | ||
1821 | /* Add in the resources needed for B. */ | |
1822 | i += hw_watchpoint_use_count (&b->base); | |
1823 | ||
1824 | target_resources_ok | |
1825 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1826 | if (target_resources_ok <= 0) |
a9634178 | 1827 | { |
3a5c3e22 | 1828 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1829 | |
1830 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1831 | error (_("Target does not support this type of " |
1832 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1833 | else if (target_resources_ok < 0 && !sw_mode) |
1834 | error (_("There are not enough available hardware " | |
1835 | "resources for this watchpoint.")); | |
a1398e0c PA |
1836 | |
1837 | /* Downgrade to software watchpoint. */ | |
1838 | b->base.type = bp_watchpoint; | |
1839 | } | |
1840 | else | |
1841 | { | |
1842 | /* If this was a software watchpoint, we've just | |
1843 | found we have enough resources to turn it to a | |
1844 | hardware watchpoint. Otherwise, this is a | |
1845 | nop. */ | |
1846 | b->base.type = type; | |
a9634178 | 1847 | } |
9fa40276 | 1848 | } |
3a5c3e22 | 1849 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1850 | error (_("Expression cannot be implemented with " |
1851 | "read/access watchpoint.")); | |
9fa40276 | 1852 | else |
3a5c3e22 | 1853 | b->base.type = bp_watchpoint; |
9fa40276 | 1854 | |
3a5c3e22 | 1855 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1856 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1857 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1858 | bl->loc_type = loc_type; |
1859 | } | |
1860 | ||
1861 | for (v = val_chain; v; v = next) | |
1862 | { | |
a5606eee VP |
1863 | next = value_next (v); |
1864 | if (v != b->val) | |
1865 | value_free (v); | |
1866 | } | |
1867 | ||
c7437ca6 PA |
1868 | /* If a software watchpoint is not watching any memory, then the |
1869 | above left it without any location set up. But, | |
1870 | bpstat_stop_status requires a location to be able to report | |
1871 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1872 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1873 | { |
3a5c3e22 PA |
1874 | struct breakpoint *base = &b->base; |
1875 | base->loc = allocate_bp_location (base); | |
1876 | base->loc->pspace = frame_pspace; | |
1877 | base->loc->address = -1; | |
1878 | base->loc->length = -1; | |
1879 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1880 | } |
a5606eee VP |
1881 | } |
1882 | else if (!within_current_scope) | |
7270d8f2 | 1883 | { |
ac74f770 MS |
1884 | printf_filtered (_("\ |
1885 | Watchpoint %d deleted because the program has left the block\n\ | |
1886 | in which its expression is valid.\n"), | |
3a5c3e22 | 1887 | b->base.number); |
d0fb5eae | 1888 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1889 | } |
a5606eee VP |
1890 | |
1891 | /* Restore the selected frame. */ | |
66076460 DJ |
1892 | if (frame_saved) |
1893 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1894 | } |
1895 | ||
a5606eee | 1896 | |
74960c60 | 1897 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1898 | inserted in the inferior. We don't differentiate the type of BL's owner |
1899 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1900 | breakpoint_ops is not defined, because in insert_bp_location, | |
1901 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1902 | static int |
35df4500 | 1903 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1904 | { |
35df4500 | 1905 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1906 | return 0; |
1907 | ||
35df4500 | 1908 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1909 | return 0; |
1910 | ||
35df4500 | 1911 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1912 | return 0; |
1913 | ||
f8eba3c6 TT |
1914 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
1915 | return 0; | |
1916 | ||
56710373 PA |
1917 | /* This is set for example, when we're attached to the parent of a |
1918 | vfork, and have detached from the child. The child is running | |
1919 | free, and we expect it to do an exec or exit, at which point the | |
1920 | OS makes the parent schedulable again (and the target reports | |
1921 | that the vfork is done). Until the child is done with the shared | |
1922 | memory region, do not insert breakpoints in the parent, otherwise | |
1923 | the child could still trip on the parent's breakpoints. Since | |
1924 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1925 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1926 | return 0; |
1927 | ||
74960c60 VP |
1928 | return 1; |
1929 | } | |
1930 | ||
934709f0 PW |
1931 | /* Same as should_be_inserted but does the check assuming |
1932 | that the location is not duplicated. */ | |
1933 | ||
1934 | static int | |
1935 | unduplicated_should_be_inserted (struct bp_location *bl) | |
1936 | { | |
1937 | int result; | |
1938 | const int save_duplicate = bl->duplicate; | |
1939 | ||
1940 | bl->duplicate = 0; | |
1941 | result = should_be_inserted (bl); | |
1942 | bl->duplicate = save_duplicate; | |
1943 | return result; | |
1944 | } | |
1945 | ||
b775012e LM |
1946 | /* Parses a conditional described by an expression COND into an |
1947 | agent expression bytecode suitable for evaluation | |
1948 | by the bytecode interpreter. Return NULL if there was | |
1949 | any error during parsing. */ | |
1950 | ||
1951 | static struct agent_expr * | |
1952 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
1953 | { | |
1954 | struct agent_expr *aexpr = NULL; | |
1955 | struct cleanup *old_chain = NULL; | |
1956 | volatile struct gdb_exception ex; | |
1957 | ||
1958 | if (!cond) | |
1959 | return NULL; | |
1960 | ||
1961 | /* We don't want to stop processing, so catch any errors | |
1962 | that may show up. */ | |
1963 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
1964 | { | |
1965 | aexpr = gen_eval_for_expr (scope, cond); | |
1966 | } | |
1967 | ||
1968 | if (ex.reason < 0) | |
1969 | { | |
1970 | /* If we got here, it means the condition could not be parsed to a valid | |
1971 | bytecode expression and thus can't be evaluated on the target's side. | |
1972 | It's no use iterating through the conditions. */ | |
1973 | return NULL; | |
1974 | } | |
1975 | ||
1976 | /* We have a valid agent expression. */ | |
1977 | return aexpr; | |
1978 | } | |
1979 | ||
1980 | /* Based on location BL, create a list of breakpoint conditions to be | |
1981 | passed on to the target. If we have duplicated locations with different | |
1982 | conditions, we will add such conditions to the list. The idea is that the | |
1983 | target will evaluate the list of conditions and will only notify GDB when | |
1984 | one of them is true. */ | |
1985 | ||
1986 | static void | |
1987 | build_target_condition_list (struct bp_location *bl) | |
1988 | { | |
1989 | struct bp_location **locp = NULL, **loc2p; | |
1990 | int null_condition_or_parse_error = 0; | |
1991 | int modified = bl->needs_update; | |
1992 | struct bp_location *loc; | |
1993 | ||
1994 | /* This is only meaningful if the target is | |
1995 | evaluating conditions and if the user has | |
1996 | opted for condition evaluation on the target's | |
1997 | side. */ | |
1998 | if (gdb_evaluates_breakpoint_condition_p () | |
1999 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2000 | return; | |
2001 | ||
2002 | /* Do a first pass to check for locations with no assigned | |
2003 | conditions or conditions that fail to parse to a valid agent expression | |
2004 | bytecode. If any of these happen, then it's no use to send conditions | |
2005 | to the target since this location will always trigger and generate a | |
2006 | response back to GDB. */ | |
2007 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2008 | { | |
2009 | loc = (*loc2p); | |
2010 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2011 | { | |
2012 | if (modified) | |
2013 | { | |
2014 | struct agent_expr *aexpr; | |
2015 | ||
2016 | /* Re-parse the conditions since something changed. In that | |
2017 | case we already freed the condition bytecodes (see | |
2018 | force_breakpoint_reinsertion). We just | |
2019 | need to parse the condition to bytecodes again. */ | |
2020 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2021 | loc->cond_bytecode = aexpr; | |
2022 | ||
2023 | /* Check if we managed to parse the conditional expression | |
2024 | correctly. If not, we will not send this condition | |
2025 | to the target. */ | |
2026 | if (aexpr) | |
2027 | continue; | |
2028 | } | |
2029 | ||
2030 | /* If we have a NULL bytecode expression, it means something | |
2031 | went wrong or we have a null condition expression. */ | |
2032 | if (!loc->cond_bytecode) | |
2033 | { | |
2034 | null_condition_or_parse_error = 1; | |
2035 | break; | |
2036 | } | |
2037 | } | |
2038 | } | |
2039 | ||
2040 | /* If any of these happened, it means we will have to evaluate the conditions | |
2041 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2042 | for all the other duplicate locations, thus we free all of them here. | |
2043 | ||
2044 | This is so we have a finer control over which locations' conditions are | |
2045 | being evaluated by GDB or the remote stub. */ | |
2046 | if (null_condition_or_parse_error) | |
2047 | { | |
2048 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2049 | { | |
2050 | loc = (*loc2p); | |
2051 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2052 | { | |
2053 | /* Only go as far as the first NULL bytecode is | |
2054 | located. */ | |
2055 | if (!loc->cond_bytecode) | |
2056 | return; | |
2057 | ||
2058 | free_agent_expr (loc->cond_bytecode); | |
2059 | loc->cond_bytecode = NULL; | |
2060 | } | |
2061 | } | |
2062 | } | |
2063 | ||
2064 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2065 | for this location's address. */ | |
2066 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2067 | { | |
2068 | loc = (*loc2p); | |
2069 | if (loc->cond | |
2070 | && is_breakpoint (loc->owner) | |
2071 | && loc->pspace->num == bl->pspace->num | |
2072 | && loc->owner->enable_state == bp_enabled | |
2073 | && loc->enabled) | |
2074 | /* Add the condition to the vector. This will be used later to send the | |
2075 | conditions to the target. */ | |
2076 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2077 | loc->cond_bytecode); | |
2078 | } | |
2079 | ||
2080 | return; | |
2081 | } | |
2082 | ||
35df4500 TJB |
2083 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2084 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2085 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2086 | Returns 0 for success, 1 if the bp_location type is not supported or |
2087 | -1 for failure. | |
879bfdc2 | 2088 | |
4a64f543 MS |
2089 | NOTE drow/2003-09-09: This routine could be broken down to an |
2090 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2091 | static int |
35df4500 | 2092 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2093 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2094 | int *disabled_breaks, |
26bb91f3 | 2095 | int *hw_breakpoint_error) |
879bfdc2 DJ |
2096 | { |
2097 | int val = 0; | |
2098 | ||
b775012e | 2099 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2100 | return 0; |
2101 | ||
35c63cd8 JB |
2102 | /* Note we don't initialize bl->target_info, as that wipes out |
2103 | the breakpoint location's shadow_contents if the breakpoint | |
2104 | is still inserted at that location. This in turn breaks | |
2105 | target_read_memory which depends on these buffers when | |
2106 | a memory read is requested at the breakpoint location: | |
2107 | Once the target_info has been wiped, we fail to see that | |
2108 | we have a breakpoint inserted at that address and thus | |
2109 | read the breakpoint instead of returning the data saved in | |
2110 | the breakpoint location's shadow contents. */ | |
35df4500 TJB |
2111 | bl->target_info.placed_address = bl->address; |
2112 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 2113 | bl->target_info.length = bl->length; |
8181d85f | 2114 | |
b775012e LM |
2115 | /* When working with target-side conditions, we must pass all the conditions |
2116 | for the same breakpoint address down to the target since GDB will not | |
2117 | insert those locations. With a list of breakpoint conditions, the target | |
2118 | can decide when to stop and notify GDB. */ | |
2119 | ||
2120 | if (is_breakpoint (bl->owner)) | |
2121 | { | |
2122 | build_target_condition_list (bl); | |
2123 | /* Reset the condition modification marker. */ | |
2124 | bl->needs_update = 0; | |
2125 | } | |
2126 | ||
35df4500 TJB |
2127 | if (bl->loc_type == bp_loc_software_breakpoint |
2128 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2129 | { |
35df4500 | 2130 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2131 | { |
2132 | /* If the explicitly specified breakpoint type | |
2133 | is not hardware breakpoint, check the memory map to see | |
2134 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2135 | |
765dc015 VP |
2136 | Two important cases are: |
2137 | - location type is not hardware breakpoint, memory | |
2138 | is readonly. We change the type of the location to | |
2139 | hardware breakpoint. | |
4a64f543 MS |
2140 | - location type is hardware breakpoint, memory is |
2141 | read-write. This means we've previously made the | |
2142 | location hardware one, but then the memory map changed, | |
2143 | so we undo. | |
765dc015 | 2144 | |
4a64f543 MS |
2145 | When breakpoints are removed, remove_breakpoints will use |
2146 | location types we've just set here, the only possible | |
2147 | problem is that memory map has changed during running | |
2148 | program, but it's not going to work anyway with current | |
2149 | gdb. */ | |
765dc015 | 2150 | struct mem_region *mr |
35df4500 | 2151 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
2152 | |
2153 | if (mr) | |
2154 | { | |
2155 | if (automatic_hardware_breakpoints) | |
2156 | { | |
765dc015 VP |
2157 | enum bp_loc_type new_type; |
2158 | ||
2159 | if (mr->attrib.mode != MEM_RW) | |
2160 | new_type = bp_loc_hardware_breakpoint; | |
2161 | else | |
2162 | new_type = bp_loc_software_breakpoint; | |
2163 | ||
35df4500 | 2164 | if (new_type != bl->loc_type) |
765dc015 VP |
2165 | { |
2166 | static int said = 0; | |
cc59ec59 | 2167 | |
35df4500 | 2168 | bl->loc_type = new_type; |
765dc015 VP |
2169 | if (!said) |
2170 | { | |
3e43a32a MS |
2171 | fprintf_filtered (gdb_stdout, |
2172 | _("Note: automatically using " | |
2173 | "hardware breakpoints for " | |
2174 | "read-only addresses.\n")); | |
765dc015 VP |
2175 | said = 1; |
2176 | } | |
2177 | } | |
2178 | } | |
35df4500 | 2179 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 2180 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
2181 | warning (_("cannot set software breakpoint " |
2182 | "at readonly address %s"), | |
35df4500 | 2183 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
2184 | } |
2185 | } | |
2186 | ||
879bfdc2 DJ |
2187 | /* First check to see if we have to handle an overlay. */ |
2188 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2189 | || bl->section == NULL |
2190 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2191 | { |
2192 | /* No overlay handling: just set the breakpoint. */ | |
2193 | ||
348d480f | 2194 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
2195 | } |
2196 | else | |
2197 | { | |
4a64f543 | 2198 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2199 | Shall we set a breakpoint at the LMA? */ |
2200 | if (!overlay_events_enabled) | |
2201 | { | |
2202 | /* Yes -- overlay event support is not active, | |
2203 | so we must try to set a breakpoint at the LMA. | |
2204 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2205 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2206 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2207 | bl->owner->number); |
879bfdc2 DJ |
2208 | else |
2209 | { | |
35df4500 TJB |
2210 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2211 | bl->section); | |
879bfdc2 | 2212 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
2213 | bl->overlay_target_info = bl->target_info; |
2214 | bl->overlay_target_info.placed_address = addr; | |
2215 | val = target_insert_breakpoint (bl->gdbarch, | |
2216 | &bl->overlay_target_info); | |
879bfdc2 | 2217 | if (val != 0) |
99361f52 | 2218 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2219 | "Overlay breakpoint %d " |
2220 | "failed: in ROM?\n", | |
35df4500 | 2221 | bl->owner->number); |
879bfdc2 DJ |
2222 | } |
2223 | } | |
2224 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2225 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2226 | { |
2227 | /* Yes. This overlay section is mapped into memory. */ | |
348d480f | 2228 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
2229 | } |
2230 | else | |
2231 | { | |
2232 | /* No. This breakpoint will not be inserted. | |
2233 | No error, but do not mark the bp as 'inserted'. */ | |
2234 | return 0; | |
2235 | } | |
2236 | } | |
2237 | ||
2238 | if (val) | |
2239 | { | |
2240 | /* Can't set the breakpoint. */ | |
35df4500 | 2241 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 2242 | { |
4a64f543 | 2243 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 2244 | val = 0; |
35df4500 | 2245 | bl->shlib_disabled = 1; |
8d3788bd | 2246 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2247 | if (!*disabled_breaks) |
2248 | { | |
2249 | fprintf_unfiltered (tmp_error_stream, | |
2250 | "Cannot insert breakpoint %d.\n", | |
2251 | bl->owner->number); | |
2252 | fprintf_unfiltered (tmp_error_stream, | |
2253 | "Temporarily disabling shared " | |
2254 | "library breakpoints:\n"); | |
2255 | } | |
2256 | *disabled_breaks = 1; | |
879bfdc2 | 2257 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2258 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
2259 | } |
2260 | else | |
879bfdc2 | 2261 | { |
35df4500 | 2262 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
2263 | { |
2264 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
2265 | fprintf_unfiltered (tmp_error_stream, |
2266 | "Cannot insert hardware " | |
2267 | "breakpoint %d.\n", | |
35df4500 | 2268 | bl->owner->number); |
879bfdc2 DJ |
2269 | } |
2270 | else | |
2271 | { | |
2272 | fprintf_unfiltered (tmp_error_stream, | |
2273 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 2274 | bl->owner->number); |
879bfdc2 DJ |
2275 | fprintf_filtered (tmp_error_stream, |
2276 | "Error accessing memory address "); | |
35df4500 | 2277 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 2278 | tmp_error_stream); |
879bfdc2 DJ |
2279 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
2280 | safe_strerror (val)); | |
2281 | } | |
2282 | ||
2283 | } | |
2284 | } | |
2285 | else | |
35df4500 | 2286 | bl->inserted = 1; |
879bfdc2 DJ |
2287 | |
2288 | return val; | |
2289 | } | |
2290 | ||
35df4500 | 2291 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2292 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2293 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2294 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2295 | { |
77b06cd7 TJB |
2296 | gdb_assert (bl->owner->ops != NULL |
2297 | && bl->owner->ops->insert_location != NULL); | |
2298 | ||
2299 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2300 | |
2301 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2302 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2303 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2304 | { |
2305 | struct bp_location *loc, **loc_temp; | |
2306 | ||
2307 | /* But don't try to insert it, if there's already another | |
2308 | hw_access location that would be considered a duplicate | |
2309 | of this one. */ | |
2310 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2311 | if (loc != bl |
85d721b8 | 2312 | && loc->watchpoint_type == hw_access |
35df4500 | 2313 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2314 | { |
35df4500 TJB |
2315 | bl->duplicate = 1; |
2316 | bl->inserted = 1; | |
2317 | bl->target_info = loc->target_info; | |
2318 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2319 | val = 0; |
2320 | break; | |
2321 | } | |
2322 | ||
2323 | if (val == 1) | |
2324 | { | |
77b06cd7 TJB |
2325 | bl->watchpoint_type = hw_access; |
2326 | val = bl->owner->ops->insert_location (bl); | |
2327 | ||
2328 | if (val) | |
2329 | /* Back to the original value. */ | |
2330 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2331 | } |
2332 | } | |
2333 | ||
35df4500 | 2334 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2335 | } |
2336 | ||
35df4500 | 2337 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2338 | { |
77b06cd7 TJB |
2339 | gdb_assert (bl->owner->ops != NULL |
2340 | && bl->owner->ops->insert_location != NULL); | |
2341 | ||
2342 | val = bl->owner->ops->insert_location (bl); | |
2343 | if (val) | |
2344 | { | |
2345 | bl->owner->enable_state = bp_disabled; | |
2346 | ||
2347 | if (val == 1) | |
2348 | warning (_("\ | |
2349 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2350 | of catchpoint."), bl->owner->number); | |
2351 | else | |
2352 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2353 | } | |
2354 | ||
2355 | bl->inserted = (val == 0); | |
1640b821 DJ |
2356 | |
2357 | /* We've already printed an error message if there was a problem | |
2358 | inserting this catchpoint, and we've disabled the catchpoint, | |
2359 | so just return success. */ | |
2360 | return 0; | |
879bfdc2 DJ |
2361 | } |
2362 | ||
2363 | return 0; | |
2364 | } | |
2365 | ||
6c95b8df PA |
2366 | /* This function is called when program space PSPACE is about to be |
2367 | deleted. It takes care of updating breakpoints to not reference | |
2368 | PSPACE anymore. */ | |
2369 | ||
2370 | void | |
2371 | breakpoint_program_space_exit (struct program_space *pspace) | |
2372 | { | |
2373 | struct breakpoint *b, *b_temp; | |
876fa593 | 2374 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2375 | |
2376 | /* Remove any breakpoint that was set through this program space. */ | |
2377 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2378 | { | |
2379 | if (b->pspace == pspace) | |
2380 | delete_breakpoint (b); | |
2381 | } | |
2382 | ||
2383 | /* Breakpoints set through other program spaces could have locations | |
2384 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2385 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2386 | { |
2387 | struct bp_location *tmp; | |
2388 | ||
2389 | if (loc->pspace == pspace) | |
2390 | { | |
2bdf28a0 | 2391 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2392 | if (loc->owner->loc == loc) |
2393 | loc->owner->loc = loc->next; | |
2394 | else | |
2395 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2396 | if (tmp->next == loc) | |
2397 | { | |
2398 | tmp->next = loc->next; | |
2399 | break; | |
2400 | } | |
2401 | } | |
2402 | } | |
2403 | ||
2404 | /* Now update the global location list to permanently delete the | |
2405 | removed locations above. */ | |
2406 | update_global_location_list (0); | |
2407 | } | |
2408 | ||
74960c60 VP |
2409 | /* Make sure all breakpoints are inserted in inferior. |
2410 | Throws exception on any error. | |
2411 | A breakpoint that is already inserted won't be inserted | |
2412 | again, so calling this function twice is safe. */ | |
2413 | void | |
2414 | insert_breakpoints (void) | |
2415 | { | |
2416 | struct breakpoint *bpt; | |
2417 | ||
2418 | ALL_BREAKPOINTS (bpt) | |
2419 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2420 | { |
2421 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2422 | ||
2423 | update_watchpoint (w, 0 /* don't reparse. */); | |
2424 | } | |
74960c60 | 2425 | |
b60e7edf | 2426 | update_global_location_list (1); |
74960c60 | 2427 | |
c35b1492 PA |
2428 | /* update_global_location_list does not insert breakpoints when |
2429 | always_inserted_mode is not enabled. Explicitly insert them | |
2430 | now. */ | |
2431 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
2432 | insert_breakpoint_locations (); |
2433 | } | |
2434 | ||
20388dd6 YQ |
2435 | /* Invoke CALLBACK for each of bp_location. */ |
2436 | ||
2437 | void | |
2438 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2439 | { | |
2440 | struct bp_location *loc, **loc_tmp; | |
2441 | ||
2442 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2443 | { | |
2444 | callback (loc, NULL); | |
2445 | } | |
2446 | } | |
2447 | ||
b775012e LM |
2448 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2449 | target. It is the case with deleting and disabling of breakpoints when using | |
2450 | always-inserted mode. */ | |
2451 | ||
2452 | static void | |
2453 | update_inserted_breakpoint_locations (void) | |
2454 | { | |
2455 | struct bp_location *bl, **blp_tmp; | |
2456 | int error_flag = 0; | |
2457 | int val = 0; | |
2458 | int disabled_breaks = 0; | |
2459 | int hw_breakpoint_error = 0; | |
2460 | ||
2461 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
2462 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
2463 | ||
2464 | /* Explicitly mark the warning -- this will only be printed if | |
2465 | there was an error. */ | |
2466 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
2467 | ||
2468 | save_current_space_and_thread (); | |
2469 | ||
2470 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2471 | { | |
2472 | /* We only want to update software breakpoints and hardware | |
2473 | breakpoints. */ | |
2474 | if (!is_breakpoint (bl->owner)) | |
2475 | continue; | |
2476 | ||
2477 | /* We only want to update locations that are already inserted | |
2478 | and need updating. This is to avoid unwanted insertion during | |
2479 | deletion of breakpoints. */ | |
2480 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2481 | continue; | |
2482 | ||
2483 | switch_to_program_space_and_thread (bl->pspace); | |
2484 | ||
2485 | /* For targets that support global breakpoints, there's no need | |
2486 | to select an inferior to insert breakpoint to. In fact, even | |
2487 | if we aren't attached to any process yet, we should still | |
2488 | insert breakpoints. */ | |
2489 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2490 | && ptid_equal (inferior_ptid, null_ptid)) | |
2491 | continue; | |
2492 | ||
2493 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
2494 | &hw_breakpoint_error); | |
2495 | if (val) | |
2496 | error_flag = val; | |
2497 | } | |
2498 | ||
2499 | if (error_flag) | |
2500 | { | |
2501 | target_terminal_ours_for_output (); | |
2502 | error_stream (tmp_error_stream); | |
2503 | } | |
2504 | ||
2505 | do_cleanups (cleanups); | |
2506 | } | |
2507 | ||
c30eee59 | 2508 | /* Used when starting or continuing the program. */ |
c906108c | 2509 | |
74960c60 VP |
2510 | static void |
2511 | insert_breakpoint_locations (void) | |
c906108c | 2512 | { |
a5606eee | 2513 | struct breakpoint *bpt; |
35df4500 | 2514 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2515 | int error_flag = 0; |
c906108c | 2516 | int val = 0; |
3fbb6ffa | 2517 | int disabled_breaks = 0; |
81d0cc19 | 2518 | int hw_breakpoint_error = 0; |
c906108c | 2519 | |
81d0cc19 | 2520 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 2521 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 2522 | |
81d0cc19 GS |
2523 | /* Explicitly mark the warning -- this will only be printed if |
2524 | there was an error. */ | |
2525 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
2526 | |
2527 | save_current_space_and_thread (); | |
2528 | ||
35df4500 | 2529 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2530 | { |
b775012e | 2531 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2532 | continue; |
2533 | ||
4a64f543 MS |
2534 | /* There is no point inserting thread-specific breakpoints if |
2535 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2536 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
2537 | if (bl->owner->thread != -1 |
2538 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2539 | continue; |
2540 | ||
35df4500 | 2541 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2542 | |
2543 | /* For targets that support global breakpoints, there's no need | |
2544 | to select an inferior to insert breakpoint to. In fact, even | |
2545 | if we aren't attached to any process yet, we should still | |
2546 | insert breakpoints. */ | |
2547 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2548 | && ptid_equal (inferior_ptid, null_ptid)) | |
2549 | continue; | |
2550 | ||
3fbb6ffa TJB |
2551 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
2552 | &hw_breakpoint_error); | |
879bfdc2 | 2553 | if (val) |
eacd795a | 2554 | error_flag = val; |
879bfdc2 | 2555 | } |
c906108c | 2556 | |
4a64f543 MS |
2557 | /* If we failed to insert all locations of a watchpoint, remove |
2558 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2559 | ALL_BREAKPOINTS (bpt) |
2560 | { | |
2561 | int some_failed = 0; | |
2562 | struct bp_location *loc; | |
2563 | ||
2564 | if (!is_hardware_watchpoint (bpt)) | |
2565 | continue; | |
2566 | ||
d6b74ac4 | 2567 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2568 | continue; |
74960c60 VP |
2569 | |
2570 | if (bpt->disposition == disp_del_at_next_stop) | |
2571 | continue; | |
a5606eee VP |
2572 | |
2573 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2574 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2575 | { |
2576 | some_failed = 1; | |
2577 | break; | |
2578 | } | |
2579 | if (some_failed) | |
2580 | { | |
2581 | for (loc = bpt->loc; loc; loc = loc->next) | |
2582 | if (loc->inserted) | |
2583 | remove_breakpoint (loc, mark_uninserted); | |
2584 | ||
2585 | hw_breakpoint_error = 1; | |
2586 | fprintf_unfiltered (tmp_error_stream, | |
2587 | "Could not insert hardware watchpoint %d.\n", | |
2588 | bpt->number); | |
eacd795a | 2589 | error_flag = -1; |
a5606eee VP |
2590 | } |
2591 | } | |
2592 | ||
eacd795a | 2593 | if (error_flag) |
81d0cc19 GS |
2594 | { |
2595 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2596 | message about possibly exhausted resources. */ | |
879bfdc2 | 2597 | if (hw_breakpoint_error) |
81d0cc19 | 2598 | { |
c6510018 MS |
2599 | fprintf_unfiltered (tmp_error_stream, |
2600 | "Could not insert hardware breakpoints:\n\ | |
2601 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2602 | } |
81d0cc19 GS |
2603 | target_terminal_ours_for_output (); |
2604 | error_stream (tmp_error_stream); | |
2605 | } | |
f7545552 TT |
2606 | |
2607 | do_cleanups (cleanups); | |
c906108c SS |
2608 | } |
2609 | ||
c30eee59 TJB |
2610 | /* Used when the program stops. |
2611 | Returns zero if successful, or non-zero if there was a problem | |
2612 | removing a breakpoint location. */ | |
2613 | ||
c906108c | 2614 | int |
fba45db2 | 2615 | remove_breakpoints (void) |
c906108c | 2616 | { |
35df4500 | 2617 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2618 | int val = 0; |
c906108c | 2619 | |
35df4500 | 2620 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2621 | { |
1e4d1764 | 2622 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2623 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2624 | } |
3a1bae8e | 2625 | return val; |
c906108c SS |
2626 | } |
2627 | ||
6c95b8df PA |
2628 | /* Remove breakpoints of process PID. */ |
2629 | ||
2630 | int | |
2631 | remove_breakpoints_pid (int pid) | |
2632 | { | |
35df4500 | 2633 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2634 | int val; |
2635 | struct inferior *inf = find_inferior_pid (pid); | |
2636 | ||
35df4500 | 2637 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2638 | { |
35df4500 | 2639 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2640 | continue; |
2641 | ||
35df4500 | 2642 | if (bl->inserted) |
6c95b8df | 2643 | { |
35df4500 | 2644 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2645 | if (val != 0) |
2646 | return val; | |
2647 | } | |
2648 | } | |
2649 | return 0; | |
2650 | } | |
2651 | ||
c906108c | 2652 | int |
fba45db2 | 2653 | reattach_breakpoints (int pid) |
c906108c | 2654 | { |
6c95b8df | 2655 | struct cleanup *old_chain; |
35df4500 | 2656 | struct bp_location *bl, **blp_tmp; |
c906108c | 2657 | int val; |
86b887df | 2658 | struct ui_file *tmp_error_stream; |
3fbb6ffa | 2659 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2660 | struct inferior *inf; |
2661 | struct thread_info *tp; | |
2662 | ||
2663 | tp = any_live_thread_of_process (pid); | |
2664 | if (tp == NULL) | |
2665 | return 1; | |
2666 | ||
2667 | inf = find_inferior_pid (pid); | |
2668 | old_chain = save_inferior_ptid (); | |
2669 | ||
2670 | inferior_ptid = tp->ptid; | |
a4954f26 | 2671 | |
86b887df | 2672 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2673 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2674 | |
35df4500 | 2675 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2676 | { |
35df4500 | 2677 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2678 | continue; |
2679 | ||
35df4500 | 2680 | if (bl->inserted) |
c5aa993b | 2681 | { |
35df4500 | 2682 | bl->inserted = 0; |
3fbb6ffa | 2683 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); |
c5aa993b JM |
2684 | if (val != 0) |
2685 | { | |
ce696e05 | 2686 | do_cleanups (old_chain); |
c5aa993b JM |
2687 | return val; |
2688 | } | |
2689 | } | |
2690 | } | |
ce696e05 | 2691 | do_cleanups (old_chain); |
c906108c SS |
2692 | return 0; |
2693 | } | |
2694 | ||
e58b0e63 PA |
2695 | static int internal_breakpoint_number = -1; |
2696 | ||
84f4c1fe PM |
2697 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2698 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2699 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 2700 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
2701 | breakpoint_count and that value incremented. Internal breakpoints |
2702 | do not set the internal var bpnum. */ | |
2703 | static void | |
2704 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2705 | { | |
2706 | if (internal) | |
2707 | b->number = internal_breakpoint_number--; | |
2708 | else | |
2709 | { | |
2710 | set_breakpoint_count (breakpoint_count + 1); | |
2711 | b->number = breakpoint_count; | |
2712 | } | |
2713 | } | |
2714 | ||
e62c965a | 2715 | static struct breakpoint * |
a6d9a66e | 2716 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 2717 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 2718 | const struct breakpoint_ops *ops) |
e62c965a | 2719 | { |
e62c965a PP |
2720 | struct symtab_and_line sal; |
2721 | struct breakpoint *b; | |
2722 | ||
4a64f543 | 2723 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2724 | |
2725 | sal.pc = address; | |
2726 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2727 | sal.pspace = current_program_space; |
e62c965a | 2728 | |
06edf0c0 | 2729 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
2730 | b->number = internal_breakpoint_number--; |
2731 | b->disposition = disp_donttouch; | |
2732 | ||
2733 | return b; | |
2734 | } | |
2735 | ||
17450429 PP |
2736 | static const char *const longjmp_names[] = |
2737 | { | |
2738 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2739 | }; | |
2740 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2741 | ||
2742 | /* Per-objfile data private to breakpoint.c. */ | |
2743 | struct breakpoint_objfile_data | |
2744 | { | |
2745 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2746 | struct minimal_symbol *overlay_msym; | |
2747 | ||
2748 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2749 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2750 | ||
28106bc2 SDJ |
2751 | /* True if we have looked for longjmp probes. */ |
2752 | int longjmp_searched; | |
2753 | ||
2754 | /* SystemTap probe points for longjmp (if any). */ | |
2755 | VEC (probe_p) *longjmp_probes; | |
2756 | ||
17450429 PP |
2757 | /* Minimal symbol for "std::terminate()" (if any). */ |
2758 | struct minimal_symbol *terminate_msym; | |
2759 | ||
2760 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2761 | struct minimal_symbol *exception_msym; | |
28106bc2 SDJ |
2762 | |
2763 | /* True if we have looked for exception probes. */ | |
2764 | int exception_searched; | |
2765 | ||
2766 | /* SystemTap probe points for unwinding (if any). */ | |
2767 | VEC (probe_p) *exception_probes; | |
17450429 PP |
2768 | }; |
2769 | ||
2770 | static const struct objfile_data *breakpoint_objfile_key; | |
2771 | ||
2772 | /* Minimal symbol not found sentinel. */ | |
2773 | static struct minimal_symbol msym_not_found; | |
2774 | ||
2775 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2776 | ||
2777 | static int | |
2778 | msym_not_found_p (const struct minimal_symbol *msym) | |
2779 | { | |
2780 | return msym == &msym_not_found; | |
2781 | } | |
2782 | ||
2783 | /* Return per-objfile data needed by breakpoint.c. | |
2784 | Allocate the data if necessary. */ | |
2785 | ||
2786 | static struct breakpoint_objfile_data * | |
2787 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2788 | { | |
2789 | struct breakpoint_objfile_data *bp_objfile_data; | |
2790 | ||
2791 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2792 | if (bp_objfile_data == NULL) | |
2793 | { | |
2794 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2795 | sizeof (*bp_objfile_data)); | |
2796 | ||
2797 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2798 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2799 | } | |
2800 | return bp_objfile_data; | |
2801 | } | |
2802 | ||
28106bc2 SDJ |
2803 | static void |
2804 | free_breakpoint_probes (struct objfile *obj, void *data) | |
2805 | { | |
2806 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
2807 | ||
2808 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
2809 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
2810 | } | |
2811 | ||
e62c965a | 2812 | static void |
af02033e | 2813 | create_overlay_event_breakpoint (void) |
e62c965a | 2814 | { |
69de3c6a | 2815 | struct objfile *objfile; |
af02033e | 2816 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2817 | |
69de3c6a PP |
2818 | ALL_OBJFILES (objfile) |
2819 | { | |
2820 | struct breakpoint *b; | |
17450429 PP |
2821 | struct breakpoint_objfile_data *bp_objfile_data; |
2822 | CORE_ADDR addr; | |
69de3c6a | 2823 | |
17450429 PP |
2824 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2825 | ||
2826 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2827 | continue; | |
2828 | ||
2829 | if (bp_objfile_data->overlay_msym == NULL) | |
2830 | { | |
2831 | struct minimal_symbol *m; | |
2832 | ||
2833 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2834 | if (m == NULL) | |
2835 | { | |
2836 | /* Avoid future lookups in this objfile. */ | |
2837 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2838 | continue; | |
2839 | } | |
2840 | bp_objfile_data->overlay_msym = m; | |
2841 | } | |
e62c965a | 2842 | |
17450429 PP |
2843 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2844 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2845 | bp_overlay_event, |
2846 | &internal_breakpoint_ops); | |
69de3c6a | 2847 | b->addr_string = xstrdup (func_name); |
e62c965a | 2848 | |
69de3c6a PP |
2849 | if (overlay_debugging == ovly_auto) |
2850 | { | |
2851 | b->enable_state = bp_enabled; | |
2852 | overlay_events_enabled = 1; | |
2853 | } | |
2854 | else | |
2855 | { | |
2856 | b->enable_state = bp_disabled; | |
2857 | overlay_events_enabled = 0; | |
2858 | } | |
e62c965a PP |
2859 | } |
2860 | update_global_location_list (1); | |
2861 | } | |
2862 | ||
0fd8e87f | 2863 | static void |
af02033e | 2864 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2865 | { |
6c95b8df | 2866 | struct program_space *pspace; |
6c95b8df PA |
2867 | struct cleanup *old_chain; |
2868 | ||
2869 | old_chain = save_current_program_space (); | |
0fd8e87f | 2870 | |
6c95b8df | 2871 | ALL_PSPACES (pspace) |
af02033e PP |
2872 | { |
2873 | struct objfile *objfile; | |
2874 | ||
2875 | set_current_program_space (pspace); | |
2876 | ||
2877 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2878 | { |
af02033e PP |
2879 | int i; |
2880 | struct gdbarch *gdbarch; | |
17450429 | 2881 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2882 | |
af02033e PP |
2883 | gdbarch = get_objfile_arch (objfile); |
2884 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2885 | continue; |
2886 | ||
17450429 PP |
2887 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2888 | ||
28106bc2 SDJ |
2889 | if (!bp_objfile_data->longjmp_searched) |
2890 | { | |
2891 | bp_objfile_data->longjmp_probes | |
2892 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
2893 | bp_objfile_data->longjmp_searched = 1; | |
2894 | } | |
2895 | ||
2896 | if (bp_objfile_data->longjmp_probes != NULL) | |
2897 | { | |
2898 | int i; | |
2899 | struct probe *probe; | |
2900 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
2901 | ||
2902 | for (i = 0; | |
2903 | VEC_iterate (probe_p, | |
2904 | bp_objfile_data->longjmp_probes, | |
2905 | i, probe); | |
2906 | ++i) | |
2907 | { | |
2908 | struct breakpoint *b; | |
2909 | ||
2910 | b = create_internal_breakpoint (gdbarch, probe->address, | |
2911 | bp_longjmp_master, | |
2912 | &internal_breakpoint_ops); | |
2913 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
2914 | b->enable_state = bp_disabled; | |
2915 | } | |
2916 | ||
2917 | continue; | |
2918 | } | |
2919 | ||
17450429 | 2920 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
2921 | { |
2922 | struct breakpoint *b; | |
af02033e | 2923 | const char *func_name; |
17450429 | 2924 | CORE_ADDR addr; |
6c95b8df | 2925 | |
17450429 | 2926 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2927 | continue; |
0fd8e87f | 2928 | |
17450429 PP |
2929 | func_name = longjmp_names[i]; |
2930 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2931 | { | |
2932 | struct minimal_symbol *m; | |
2933 | ||
2934 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2935 | if (m == NULL) | |
2936 | { | |
2937 | /* Prevent future lookups in this objfile. */ | |
2938 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2939 | continue; | |
2940 | } | |
2941 | bp_objfile_data->longjmp_msym[i] = m; | |
2942 | } | |
2943 | ||
2944 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
2945 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
2946 | &internal_breakpoint_ops); | |
af02033e PP |
2947 | b->addr_string = xstrdup (func_name); |
2948 | b->enable_state = bp_disabled; | |
2949 | } | |
0fd8e87f | 2950 | } |
af02033e | 2951 | } |
0fd8e87f | 2952 | update_global_location_list (1); |
6c95b8df PA |
2953 | |
2954 | do_cleanups (old_chain); | |
0fd8e87f UW |
2955 | } |
2956 | ||
af02033e | 2957 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 2958 | static void |
af02033e | 2959 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
2960 | { |
2961 | struct program_space *pspace; | |
aa7d318d | 2962 | struct cleanup *old_chain; |
af02033e | 2963 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
2964 | |
2965 | old_chain = save_current_program_space (); | |
2966 | ||
2967 | ALL_PSPACES (pspace) | |
17450429 PP |
2968 | { |
2969 | struct objfile *objfile; | |
2970 | CORE_ADDR addr; | |
2971 | ||
2972 | set_current_program_space (pspace); | |
2973 | ||
aa7d318d TT |
2974 | ALL_OBJFILES (objfile) |
2975 | { | |
2976 | struct breakpoint *b; | |
17450429 | 2977 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 2978 | |
17450429 | 2979 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 2980 | |
17450429 PP |
2981 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
2982 | continue; | |
2983 | ||
2984 | if (bp_objfile_data->terminate_msym == NULL) | |
2985 | { | |
2986 | struct minimal_symbol *m; | |
2987 | ||
2988 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2989 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2990 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2991 | { | |
2992 | /* Prevent future lookups in this objfile. */ | |
2993 | bp_objfile_data->terminate_msym = &msym_not_found; | |
2994 | continue; | |
2995 | } | |
2996 | bp_objfile_data->terminate_msym = m; | |
2997 | } | |
aa7d318d | 2998 | |
17450429 PP |
2999 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3000 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3001 | bp_std_terminate_master, |
3002 | &internal_breakpoint_ops); | |
aa7d318d TT |
3003 | b->addr_string = xstrdup (func_name); |
3004 | b->enable_state = bp_disabled; | |
3005 | } | |
17450429 PP |
3006 | } |
3007 | ||
aa7d318d TT |
3008 | update_global_location_list (1); |
3009 | ||
3010 | do_cleanups (old_chain); | |
3011 | } | |
3012 | ||
186c406b TT |
3013 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3014 | ||
70221824 | 3015 | static void |
186c406b TT |
3016 | create_exception_master_breakpoint (void) |
3017 | { | |
3018 | struct objfile *objfile; | |
17450429 | 3019 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3020 | |
3021 | ALL_OBJFILES (objfile) | |
3022 | { | |
17450429 PP |
3023 | struct breakpoint *b; |
3024 | struct gdbarch *gdbarch; | |
3025 | struct breakpoint_objfile_data *bp_objfile_data; | |
3026 | CORE_ADDR addr; | |
3027 | ||
3028 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3029 | ||
28106bc2 SDJ |
3030 | /* We prefer the SystemTap probe point if it exists. */ |
3031 | if (!bp_objfile_data->exception_searched) | |
3032 | { | |
3033 | bp_objfile_data->exception_probes | |
3034 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3035 | bp_objfile_data->exception_searched = 1; | |
3036 | } | |
3037 | ||
3038 | if (bp_objfile_data->exception_probes != NULL) | |
3039 | { | |
3040 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3041 | int i; | |
3042 | struct probe *probe; | |
3043 | ||
3044 | for (i = 0; | |
3045 | VEC_iterate (probe_p, | |
3046 | bp_objfile_data->exception_probes, | |
3047 | i, probe); | |
3048 | ++i) | |
3049 | { | |
3050 | struct breakpoint *b; | |
3051 | ||
3052 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3053 | bp_exception_master, | |
3054 | &internal_breakpoint_ops); | |
3055 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3056 | b->enable_state = bp_disabled; | |
3057 | } | |
3058 | ||
3059 | continue; | |
3060 | } | |
3061 | ||
3062 | /* Otherwise, try the hook function. */ | |
3063 | ||
17450429 PP |
3064 | if (msym_not_found_p (bp_objfile_data->exception_msym)) |
3065 | continue; | |
3066 | ||
3067 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3068 | |
17450429 | 3069 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 3070 | { |
17450429 | 3071 | struct minimal_symbol *debug_hook; |
186c406b | 3072 | |
17450429 PP |
3073 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3074 | if (debug_hook == NULL) | |
3075 | { | |
3076 | bp_objfile_data->exception_msym = &msym_not_found; | |
3077 | continue; | |
3078 | } | |
3079 | ||
3080 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3081 | } |
17450429 PP |
3082 | |
3083 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
3084 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
3085 | ¤t_target); | |
06edf0c0 PA |
3086 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3087 | &internal_breakpoint_ops); | |
17450429 PP |
3088 | b->addr_string = xstrdup (func_name); |
3089 | b->enable_state = bp_disabled; | |
186c406b TT |
3090 | } |
3091 | ||
3092 | update_global_location_list (1); | |
3093 | } | |
3094 | ||
c906108c | 3095 | void |
fba45db2 | 3096 | update_breakpoints_after_exec (void) |
c906108c | 3097 | { |
35df4500 | 3098 | struct breakpoint *b, *b_tmp; |
876fa593 | 3099 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3100 | |
25b22b0a PA |
3101 | /* We're about to delete breakpoints from GDB's lists. If the |
3102 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3103 | writing the breakpoints' "shadow contents" back into memory. The | |
3104 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3105 | do that. Instead, the target is responsible from marking | |
3106 | breakpoints out as soon as it detects an exec. We don't do that | |
3107 | here instead, because there may be other attempts to delete | |
3108 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3109 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3110 | if (bploc->pspace == current_program_space) |
3111 | gdb_assert (!bploc->inserted); | |
c906108c | 3112 | |
35df4500 | 3113 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3114 | { |
6c95b8df PA |
3115 | if (b->pspace != current_program_space) |
3116 | continue; | |
3117 | ||
4a64f543 | 3118 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3119 | if (b->type == bp_shlib_event) |
3120 | { | |
3121 | delete_breakpoint (b); | |
3122 | continue; | |
3123 | } | |
c906108c | 3124 | |
4a64f543 | 3125 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3126 | if (b->type == bp_jit_event) |
3127 | { | |
3128 | delete_breakpoint (b); | |
3129 | continue; | |
3130 | } | |
3131 | ||
1900040c | 3132 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3133 | as must overlay event and longjmp master breakpoints. */ |
3134 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3135 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3136 | || b->type == bp_exception_master) | |
c4093a6a JM |
3137 | { |
3138 | delete_breakpoint (b); | |
3139 | continue; | |
3140 | } | |
3141 | ||
4a64f543 | 3142 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3143 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3144 | { |
3145 | delete_breakpoint (b); | |
3146 | continue; | |
3147 | } | |
3148 | ||
611c83ae PA |
3149 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3150 | after an exec. */ | |
186c406b TT |
3151 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
3152 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
3153 | { |
3154 | delete_breakpoint (b); | |
3155 | continue; | |
3156 | } | |
3157 | ||
ce78b96d JB |
3158 | if (b->type == bp_catchpoint) |
3159 | { | |
3160 | /* For now, none of the bp_catchpoint breakpoints need to | |
3161 | do anything at this point. In the future, if some of | |
3162 | the catchpoints need to something, we will need to add | |
3163 | a new method, and call this method from here. */ | |
3164 | continue; | |
3165 | } | |
3166 | ||
c5aa993b JM |
3167 | /* bp_finish is a special case. The only way we ought to be able |
3168 | to see one of these when an exec() has happened, is if the user | |
3169 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3170 | carries them to the call-site of the current callee, by setting | |
3171 | a temporary bp there and resuming. But in this case, the finish | |
3172 | will carry them entirely through the vfork & exec. | |
3173 | ||
3174 | We don't want to allow a bp_finish to remain inserted now. But | |
3175 | we can't safely delete it, 'cause finish_command has a handle to | |
3176 | the bp on a bpstat, and will later want to delete it. There's a | |
3177 | chance (and I've seen it happen) that if we delete the bp_finish | |
3178 | here, that its storage will get reused by the time finish_command | |
3179 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3180 | We really must allow finish_command to delete a bp_finish. | |
3181 | ||
e5dd4106 | 3182 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3183 | it's safe to delete something others may have handles to?" |
3184 | problem, what we'll do here is just uninsert the bp_finish, and | |
3185 | let finish_command delete it. | |
3186 | ||
3187 | (We know the bp_finish is "doomed" in the sense that it's | |
3188 | momentary, and will be deleted as soon as finish_command sees | |
3189 | the inferior stopped. So it doesn't matter that the bp's | |
3190 | address is probably bogus in the new a.out, unlike e.g., the | |
3191 | solib breakpoints.) */ | |
c5aa993b | 3192 | |
c5aa993b JM |
3193 | if (b->type == bp_finish) |
3194 | { | |
3195 | continue; | |
3196 | } | |
3197 | ||
3198 | /* Without a symbolic address, we have little hope of the | |
3199 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3200 | a.out. */ |
c5aa993b JM |
3201 | if (b->addr_string == NULL) |
3202 | { | |
3203 | delete_breakpoint (b); | |
3204 | continue; | |
3205 | } | |
c5aa993b | 3206 | } |
1900040c | 3207 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
3208 | create_overlay_event_breakpoint (); |
3209 | create_longjmp_master_breakpoint (); | |
3210 | create_std_terminate_master_breakpoint (); | |
186c406b | 3211 | create_exception_master_breakpoint (); |
c906108c SS |
3212 | } |
3213 | ||
3214 | int | |
fba45db2 | 3215 | detach_breakpoints (int pid) |
c906108c | 3216 | { |
35df4500 | 3217 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3218 | int val = 0; |
ce696e05 | 3219 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3220 | struct inferior *inf = current_inferior (); |
c5aa993b | 3221 | |
39f77062 | 3222 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 3223 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3224 | |
6c95b8df | 3225 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 3226 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 3227 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3228 | { |
35df4500 | 3229 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3230 | continue; |
3231 | ||
35df4500 TJB |
3232 | if (bl->inserted) |
3233 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3234 | } |
d03285ec UW |
3235 | |
3236 | /* Detach single-step breakpoints as well. */ | |
3237 | detach_single_step_breakpoints (); | |
3238 | ||
ce696e05 | 3239 | do_cleanups (old_chain); |
3a1bae8e | 3240 | return val; |
c906108c SS |
3241 | } |
3242 | ||
35df4500 | 3243 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3244 | Note that this is used to detach breakpoints from a child fork. |
3245 | When we get here, the child isn't in the inferior list, and neither | |
3246 | do we have objects to represent its address space --- we should | |
35df4500 | 3247 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3248 | |
c906108c | 3249 | static int |
35df4500 | 3250 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3251 | { |
3252 | int val; | |
c5aa993b | 3253 | |
35df4500 TJB |
3254 | /* BL is never in moribund_locations by our callers. */ |
3255 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3256 | |
35df4500 | 3257 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3258 | /* Permanent breakpoints cannot be inserted or removed. */ |
3259 | return 0; | |
3260 | ||
74960c60 VP |
3261 | /* The type of none suggests that owner is actually deleted. |
3262 | This should not ever happen. */ | |
35df4500 | 3263 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3264 | |
35df4500 TJB |
3265 | if (bl->loc_type == bp_loc_software_breakpoint |
3266 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3267 | { |
c02f5703 MS |
3268 | /* "Normal" instruction breakpoint: either the standard |
3269 | trap-instruction bp (bp_breakpoint), or a | |
3270 | bp_hardware_breakpoint. */ | |
3271 | ||
3272 | /* First check to see if we have to handle an overlay. */ | |
3273 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3274 | || bl->section == NULL |
3275 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3276 | { |
3277 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 3278 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 3279 | } |
c906108c SS |
3280 | else |
3281 | { | |
4a64f543 | 3282 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3283 | Did we set a breakpoint at the LMA? */ |
3284 | if (!overlay_events_enabled) | |
3285 | { | |
3286 | /* Yes -- overlay event support is not active, so we | |
3287 | should have set a breakpoint at the LMA. Remove it. | |
3288 | */ | |
c02f5703 MS |
3289 | /* Ignore any failures: if the LMA is in ROM, we will |
3290 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3291 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3292 | target_remove_hw_breakpoint (bl->gdbarch, | |
3293 | &bl->overlay_target_info); | |
c02f5703 | 3294 | else |
35df4500 TJB |
3295 | target_remove_breakpoint (bl->gdbarch, |
3296 | &bl->overlay_target_info); | |
c02f5703 MS |
3297 | } |
3298 | /* Did we set a breakpoint at the VMA? | |
3299 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3300 | if (bl->inserted) |
c906108c | 3301 | { |
c02f5703 MS |
3302 | /* Yes -- remove it. Previously we did not bother to |
3303 | remove the breakpoint if the section had been | |
3304 | unmapped, but let's not rely on that being safe. We | |
3305 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3306 | |
3307 | /* However, we should remove *software* breakpoints only | |
3308 | if the section is still mapped, or else we overwrite | |
3309 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3310 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3311 | || section_is_mapped (bl->section)) | |
3312 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3313 | else |
3314 | val = 0; | |
c906108c | 3315 | } |
c02f5703 MS |
3316 | else |
3317 | { | |
3318 | /* No -- not inserted, so no need to remove. No error. */ | |
3319 | val = 0; | |
3320 | } | |
c906108c | 3321 | } |
879d1e6b UW |
3322 | |
3323 | /* In some cases, we might not be able to remove a breakpoint | |
3324 | in a shared library that has already been removed, but we | |
3325 | have not yet processed the shlib unload event. */ | |
35df4500 | 3326 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
3327 | val = 0; |
3328 | ||
c906108c SS |
3329 | if (val) |
3330 | return val; | |
35df4500 | 3331 | bl->inserted = (is == mark_inserted); |
c906108c | 3332 | } |
35df4500 | 3333 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3334 | { |
77b06cd7 TJB |
3335 | gdb_assert (bl->owner->ops != NULL |
3336 | && bl->owner->ops->remove_location != NULL); | |
3337 | ||
35df4500 | 3338 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 3339 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 3340 | |
c906108c | 3341 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 3342 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 3343 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3344 | bl->owner->number); |
c906108c | 3345 | } |
35df4500 TJB |
3346 | else if (bl->owner->type == bp_catchpoint |
3347 | && breakpoint_enabled (bl->owner) | |
3348 | && !bl->duplicate) | |
ce78b96d | 3349 | { |
77b06cd7 TJB |
3350 | gdb_assert (bl->owner->ops != NULL |
3351 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3352 | |
77b06cd7 | 3353 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
3354 | if (val) |
3355 | return val; | |
77b06cd7 | 3356 | |
35df4500 | 3357 | bl->inserted = (is == mark_inserted); |
ce78b96d | 3358 | } |
c906108c SS |
3359 | |
3360 | return 0; | |
3361 | } | |
3362 | ||
6c95b8df | 3363 | static int |
35df4500 | 3364 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
3365 | { |
3366 | int ret; | |
3367 | struct cleanup *old_chain; | |
3368 | ||
35df4500 TJB |
3369 | /* BL is never in moribund_locations by our callers. */ |
3370 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3371 | |
35df4500 | 3372 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
3373 | /* Permanent breakpoints cannot be inserted or removed. */ |
3374 | return 0; | |
3375 | ||
3376 | /* The type of none suggests that owner is actually deleted. | |
3377 | This should not ever happen. */ | |
35df4500 | 3378 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
3379 | |
3380 | old_chain = save_current_space_and_thread (); | |
3381 | ||
35df4500 | 3382 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3383 | |
35df4500 | 3384 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
3385 | |
3386 | do_cleanups (old_chain); | |
3387 | return ret; | |
3388 | } | |
3389 | ||
c906108c SS |
3390 | /* Clear the "inserted" flag in all breakpoints. */ |
3391 | ||
25b22b0a | 3392 | void |
fba45db2 | 3393 | mark_breakpoints_out (void) |
c906108c | 3394 | { |
35df4500 | 3395 | struct bp_location *bl, **blp_tmp; |
c906108c | 3396 | |
35df4500 TJB |
3397 | ALL_BP_LOCATIONS (bl, blp_tmp) |
3398 | if (bl->pspace == current_program_space) | |
3399 | bl->inserted = 0; | |
c906108c SS |
3400 | } |
3401 | ||
53a5351d JM |
3402 | /* Clear the "inserted" flag in all breakpoints and delete any |
3403 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3404 | |
3405 | Plus other such housekeeping that has to be done for breakpoints | |
3406 | between runs. | |
3407 | ||
53a5351d JM |
3408 | Note: this function gets called at the end of a run (by |
3409 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3410 | init_wait_for_inferior). */ |
c906108c SS |
3411 | |
3412 | ||
3413 | ||
3414 | void | |
fba45db2 | 3415 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3416 | { |
35df4500 TJB |
3417 | struct breakpoint *b, *b_tmp; |
3418 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 3419 | int ix; |
6c95b8df | 3420 | struct program_space *pspace = current_program_space; |
c906108c | 3421 | |
50c71eaf PA |
3422 | /* If breakpoint locations are shared across processes, then there's |
3423 | nothing to do. */ | |
2567c7d9 | 3424 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
3425 | return; |
3426 | ||
35df4500 | 3427 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3428 | { |
35df4500 TJB |
3429 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
3430 | if (bl->pspace == pspace | |
3431 | && bl->owner->enable_state != bp_permanent) | |
3432 | bl->inserted = 0; | |
6c95b8df | 3433 | } |
075f6582 | 3434 | |
35df4500 | 3435 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3436 | { |
6c95b8df PA |
3437 | if (b->loc && b->loc->pspace != pspace) |
3438 | continue; | |
3439 | ||
c5aa993b JM |
3440 | switch (b->type) |
3441 | { | |
3442 | case bp_call_dummy: | |
c906108c | 3443 | |
c5aa993b | 3444 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3445 | cause problems when the inferior is rerun, so we better get |
3446 | rid of it. */ | |
3447 | ||
3448 | case bp_watchpoint_scope: | |
3449 | ||
3450 | /* Also get rid of scope breakpoints. */ | |
3451 | ||
3452 | case bp_shlib_event: | |
3453 | ||
3454 | /* Also remove solib event breakpoints. Their addresses may | |
3455 | have changed since the last time we ran the program. | |
3456 | Actually we may now be debugging against different target; | |
3457 | and so the solib backend that installed this breakpoint may | |
3458 | not be used in by the target. E.g., | |
3459 | ||
3460 | (gdb) file prog-linux | |
3461 | (gdb) run # native linux target | |
3462 | ... | |
3463 | (gdb) kill | |
3464 | (gdb) file prog-win.exe | |
3465 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3466 | */ | |
c906108c | 3467 | |
f59f708a PA |
3468 | case bp_step_resume: |
3469 | ||
3470 | /* Also remove step-resume breakpoints. */ | |
3471 | ||
c5aa993b JM |
3472 | delete_breakpoint (b); |
3473 | break; | |
c906108c | 3474 | |
c5aa993b JM |
3475 | case bp_watchpoint: |
3476 | case bp_hardware_watchpoint: | |
3477 | case bp_read_watchpoint: | |
3478 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3479 | { |
3480 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3481 | |
3a5c3e22 PA |
3482 | /* Likewise for watchpoints on local expressions. */ |
3483 | if (w->exp_valid_block != NULL) | |
3484 | delete_breakpoint (b); | |
3485 | else if (context == inf_starting) | |
3486 | { | |
3487 | /* Reset val field to force reread of starting value in | |
3488 | insert_breakpoints. */ | |
3489 | if (w->val) | |
3490 | value_free (w->val); | |
3491 | w->val = NULL; | |
3492 | w->val_valid = 0; | |
c860120c | 3493 | } |
3a5c3e22 | 3494 | } |
c5aa993b JM |
3495 | break; |
3496 | default: | |
c5aa993b JM |
3497 | break; |
3498 | } | |
3499 | } | |
1c5cfe86 PA |
3500 | |
3501 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3502 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3503 | decref_bp_location (&bl); | |
1c5cfe86 | 3504 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3505 | } |
3506 | ||
6c95b8df PA |
3507 | /* These functions concern about actual breakpoints inserted in the |
3508 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3509 | we need to hop over the bkpt --- so we check for address space | |
3510 | match, not program space. */ | |
3511 | ||
c2c6d25f JM |
3512 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3513 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3514 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3515 | permanent breakpoint. | |
3516 | - When continuing from a location with an ordinary breakpoint, we | |
3517 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3518 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3519 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3520 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3521 | |
c2c6d25f | 3522 | enum breakpoint_here |
6c95b8df | 3523 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 3524 | { |
35df4500 | 3525 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3526 | int any_breakpoint_here = 0; |
c906108c | 3527 | |
35df4500 | 3528 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3529 | { |
35df4500 TJB |
3530 | if (bl->loc_type != bp_loc_software_breakpoint |
3531 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3532 | continue; |
3533 | ||
f1310107 | 3534 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
3535 | if ((breakpoint_enabled (bl->owner) |
3536 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 3537 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3538 | { |
3539 | if (overlay_debugging | |
35df4500 TJB |
3540 | && section_is_overlay (bl->section) |
3541 | && !section_is_mapped (bl->section)) | |
075f6582 | 3542 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 3543 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
3544 | return permanent_breakpoint_here; |
3545 | else | |
3546 | any_breakpoint_here = 1; | |
3547 | } | |
3548 | } | |
c906108c | 3549 | |
c2c6d25f | 3550 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
3551 | } |
3552 | ||
1c5cfe86 PA |
3553 | /* Return true if there's a moribund breakpoint at PC. */ |
3554 | ||
3555 | int | |
6c95b8df | 3556 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
3557 | { |
3558 | struct bp_location *loc; | |
3559 | int ix; | |
3560 | ||
3561 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 3562 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
3563 | return 1; |
3564 | ||
3565 | return 0; | |
3566 | } | |
c2c6d25f | 3567 | |
c36b740a | 3568 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
3569 | inserted using regular breakpoint_chain / bp_location array |
3570 | mechanism. This does not check for single-step breakpoints, which | |
3571 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
3572 | |
3573 | int | |
4a64f543 MS |
3574 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
3575 | CORE_ADDR pc) | |
c906108c | 3576 | { |
35df4500 | 3577 | struct bp_location *bl, **blp_tmp; |
c906108c | 3578 | |
35df4500 | 3579 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3580 | { |
35df4500 TJB |
3581 | if (bl->loc_type != bp_loc_software_breakpoint |
3582 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3583 | continue; |
3584 | ||
35df4500 | 3585 | if (bl->inserted |
f1310107 | 3586 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3587 | { |
3588 | if (overlay_debugging | |
35df4500 TJB |
3589 | && section_is_overlay (bl->section) |
3590 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
3591 | continue; /* unmapped overlay -- can't be a match */ |
3592 | else | |
3593 | return 1; | |
3594 | } | |
c5aa993b | 3595 | } |
c36b740a VP |
3596 | return 0; |
3597 | } | |
3598 | ||
3599 | /* Returns non-zero iff there's either regular breakpoint | |
3600 | or a single step breakpoint inserted at PC. */ | |
3601 | ||
3602 | int | |
6c95b8df | 3603 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 3604 | { |
6c95b8df | 3605 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 3606 | return 1; |
c906108c | 3607 | |
6c95b8df | 3608 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3609 | return 1; |
3610 | ||
c906108c SS |
3611 | return 0; |
3612 | } | |
3613 | ||
4fa8626c DJ |
3614 | /* This function returns non-zero iff there is a software breakpoint |
3615 | inserted at PC. */ | |
3616 | ||
3617 | int | |
3e43a32a MS |
3618 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
3619 | CORE_ADDR pc) | |
4fa8626c | 3620 | { |
35df4500 | 3621 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 3622 | |
35df4500 | 3623 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 3624 | { |
35df4500 | 3625 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
3626 | continue; |
3627 | ||
35df4500 TJB |
3628 | if (bl->inserted |
3629 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 3630 | aspace, pc)) |
4fa8626c DJ |
3631 | { |
3632 | if (overlay_debugging | |
35df4500 TJB |
3633 | && section_is_overlay (bl->section) |
3634 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
3635 | continue; /* unmapped overlay -- can't be a match */ |
3636 | else | |
3637 | return 1; | |
3638 | } | |
3639 | } | |
3640 | ||
1aafd4da | 3641 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 3642 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3643 | return 1; |
3644 | ||
4fa8626c DJ |
3645 | return 0; |
3646 | } | |
3647 | ||
9093389c PA |
3648 | int |
3649 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
3650 | CORE_ADDR addr, ULONGEST len) | |
3651 | { | |
3652 | struct breakpoint *bpt; | |
3653 | ||
3654 | ALL_BREAKPOINTS (bpt) | |
3655 | { | |
3656 | struct bp_location *loc; | |
3657 | ||
3658 | if (bpt->type != bp_hardware_watchpoint | |
3659 | && bpt->type != bp_access_watchpoint) | |
3660 | continue; | |
3661 | ||
3662 | if (!breakpoint_enabled (bpt)) | |
3663 | continue; | |
3664 | ||
3665 | for (loc = bpt->loc; loc; loc = loc->next) | |
3666 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3667 | { | |
3668 | CORE_ADDR l, h; | |
3669 | ||
3670 | /* Check for intersection. */ | |
3671 | l = max (loc->address, addr); | |
3672 | h = min (loc->address + loc->length, addr + len); | |
3673 | if (l < h) | |
3674 | return 1; | |
3675 | } | |
3676 | } | |
3677 | return 0; | |
3678 | } | |
3679 | ||
075f6582 DJ |
3680 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
3681 | PC is valid for process/thread PTID. */ | |
c906108c SS |
3682 | |
3683 | int | |
6c95b8df PA |
3684 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
3685 | ptid_t ptid) | |
c906108c | 3686 | { |
35df4500 | 3687 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 3688 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 3689 | int thread = -1; |
4a306c9a | 3690 | int task = 0; |
a6f1cd96 | 3691 | |
35df4500 | 3692 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3693 | { |
35df4500 TJB |
3694 | if (bl->loc_type != bp_loc_software_breakpoint |
3695 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3696 | continue; |
3697 | ||
35df4500 TJB |
3698 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
3699 | if (!breakpoint_enabled (bl->owner) | |
3700 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
3701 | continue; |
3702 | ||
f1310107 | 3703 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
3704 | continue; |
3705 | ||
35df4500 | 3706 | if (bl->owner->thread != -1) |
075f6582 | 3707 | { |
a6f1cd96 JB |
3708 | /* This is a thread-specific breakpoint. Check that ptid |
3709 | matches that thread. If thread hasn't been computed yet, | |
3710 | it is now time to do so. */ | |
3711 | if (thread == -1) | |
3712 | thread = pid_to_thread_id (ptid); | |
35df4500 | 3713 | if (bl->owner->thread != thread) |
a6f1cd96 | 3714 | continue; |
075f6582 | 3715 | } |
a6f1cd96 | 3716 | |
35df4500 | 3717 | if (bl->owner->task != 0) |
4a306c9a JB |
3718 | { |
3719 | /* This is a task-specific breakpoint. Check that ptid | |
3720 | matches that task. If task hasn't been computed yet, | |
3721 | it is now time to do so. */ | |
3722 | if (task == 0) | |
3723 | task = ada_get_task_number (ptid); | |
35df4500 | 3724 | if (bl->owner->task != task) |
4a306c9a JB |
3725 | continue; |
3726 | } | |
3727 | ||
a6f1cd96 | 3728 | if (overlay_debugging |
35df4500 TJB |
3729 | && section_is_overlay (bl->section) |
3730 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
3731 | continue; /* unmapped overlay -- can't be a match */ |
3732 | ||
3733 | return 1; | |
c5aa993b | 3734 | } |
c906108c SS |
3735 | |
3736 | return 0; | |
3737 | } | |
c906108c | 3738 | \f |
c5aa993b | 3739 | |
c906108c SS |
3740 | /* bpstat stuff. External routines' interfaces are documented |
3741 | in breakpoint.h. */ | |
3742 | ||
3743 | int | |
c326b90e | 3744 | is_catchpoint (struct breakpoint *ep) |
c906108c | 3745 | { |
533be4dd | 3746 | return (ep->type == bp_catchpoint); |
c906108c SS |
3747 | } |
3748 | ||
f431efe5 PA |
3749 | /* Frees any storage that is part of a bpstat. Does not walk the |
3750 | 'next' chain. */ | |
3751 | ||
3752 | static void | |
198757a8 VP |
3753 | bpstat_free (bpstat bs) |
3754 | { | |
3755 | if (bs->old_val != NULL) | |
3756 | value_free (bs->old_val); | |
9add0f1b | 3757 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3758 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3759 | xfree (bs); |
3760 | } | |
3761 | ||
c906108c SS |
3762 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3763 | Also free any storage that is part of a bpstat. */ | |
3764 | ||
3765 | void | |
fba45db2 | 3766 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3767 | { |
3768 | bpstat p; | |
3769 | bpstat q; | |
3770 | ||
3771 | if (bsp == 0) | |
3772 | return; | |
3773 | p = *bsp; | |
3774 | while (p != NULL) | |
3775 | { | |
3776 | q = p->next; | |
198757a8 | 3777 | bpstat_free (p); |
c906108c SS |
3778 | p = q; |
3779 | } | |
3780 | *bsp = NULL; | |
3781 | } | |
3782 | ||
3783 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3784 | is part of the bpstat is copied as well. */ | |
3785 | ||
3786 | bpstat | |
fba45db2 | 3787 | bpstat_copy (bpstat bs) |
c906108c SS |
3788 | { |
3789 | bpstat p = NULL; | |
3790 | bpstat tmp; | |
3791 | bpstat retval = NULL; | |
3792 | ||
3793 | if (bs == NULL) | |
3794 | return bs; | |
3795 | ||
3796 | for (; bs != NULL; bs = bs->next) | |
3797 | { | |
3798 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3799 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3800 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3801 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3802 | if (bs->old_val != NULL) |
3c3185ac JK |
3803 | { |
3804 | tmp->old_val = value_copy (bs->old_val); | |
3805 | release_value (tmp->old_val); | |
3806 | } | |
31cc81e9 | 3807 | |
c906108c SS |
3808 | if (p == NULL) |
3809 | /* This is the first thing in the chain. */ | |
3810 | retval = tmp; | |
3811 | else | |
3812 | p->next = tmp; | |
3813 | p = tmp; | |
3814 | } | |
3815 | p->next = NULL; | |
3816 | return retval; | |
3817 | } | |
3818 | ||
4a64f543 | 3819 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3820 | |
3821 | bpstat | |
fba45db2 | 3822 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3823 | { |
c5aa993b JM |
3824 | if (bsp == NULL) |
3825 | return NULL; | |
c906108c | 3826 | |
c5aa993b JM |
3827 | for (; bsp != NULL; bsp = bsp->next) |
3828 | { | |
f431efe5 | 3829 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3830 | return bsp; |
3831 | } | |
c906108c SS |
3832 | return NULL; |
3833 | } | |
3834 | ||
4a64f543 MS |
3835 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3836 | stopped at. *BSP upon return is a bpstat which points to the | |
3837 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3838 | good for anything but further calls to bpstat_num). | |
3839 | ||
8671a17b PA |
3840 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3841 | Return -1 if stopped at a breakpoint that has been deleted since | |
3842 | we set it. | |
3843 | Return 1 otherwise. */ | |
c906108c SS |
3844 | |
3845 | int | |
8671a17b | 3846 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3847 | { |
3848 | struct breakpoint *b; | |
3849 | ||
3850 | if ((*bsp) == NULL) | |
3851 | return 0; /* No more breakpoint values */ | |
8671a17b | 3852 | |
4a64f543 MS |
3853 | /* We assume we'll never have several bpstats that correspond to a |
3854 | single breakpoint -- otherwise, this function might return the | |
3855 | same number more than once and this will look ugly. */ | |
f431efe5 | 3856 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3857 | *bsp = (*bsp)->next; |
3858 | if (b == NULL) | |
3859 | return -1; /* breakpoint that's been deleted since */ | |
3860 | ||
3861 | *num = b->number; /* We have its number */ | |
3862 | return 1; | |
c906108c SS |
3863 | } |
3864 | ||
e93ca019 | 3865 | /* See breakpoint.h. */ |
c906108c SS |
3866 | |
3867 | void | |
e93ca019 | 3868 | bpstat_clear_actions (void) |
c906108c | 3869 | { |
e93ca019 JK |
3870 | struct thread_info *tp; |
3871 | bpstat bs; | |
3872 | ||
3873 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3874 | return; | |
3875 | ||
3876 | tp = find_thread_ptid (inferior_ptid); | |
3877 | if (tp == NULL) | |
3878 | return; | |
3879 | ||
3880 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 3881 | { |
9add0f1b | 3882 | decref_counted_command_line (&bs->commands); |
abf85f46 | 3883 | |
c906108c SS |
3884 | if (bs->old_val != NULL) |
3885 | { | |
3886 | value_free (bs->old_val); | |
3887 | bs->old_val = NULL; | |
3888 | } | |
3889 | } | |
3890 | } | |
3891 | ||
f3b1572e PA |
3892 | /* Called when a command is about to proceed the inferior. */ |
3893 | ||
3894 | static void | |
3895 | breakpoint_about_to_proceed (void) | |
3896 | { | |
3897 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3898 | { | |
3899 | struct thread_info *tp = inferior_thread (); | |
3900 | ||
3901 | /* Allow inferior function calls in breakpoint commands to not | |
3902 | interrupt the command list. When the call finishes | |
3903 | successfully, the inferior will be standing at the same | |
3904 | breakpoint as if nothing happened. */ | |
16c381f0 | 3905 | if (tp->control.in_infcall) |
f3b1572e PA |
3906 | return; |
3907 | } | |
3908 | ||
3909 | breakpoint_proceeded = 1; | |
3910 | } | |
3911 | ||
4a64f543 MS |
3912 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3913 | command. */ | |
c906108c | 3914 | static void |
4efb68b1 | 3915 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3916 | { |
3917 | executing_breakpoint_commands = 0; | |
3918 | } | |
3919 | ||
abf85f46 JK |
3920 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
3921 | or its equivalent. */ | |
3922 | ||
3923 | static int | |
3924 | command_line_is_silent (struct command_line *cmd) | |
3925 | { | |
3926 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
3927 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
3928 | } | |
3929 | ||
4a64f543 MS |
3930 | /* Execute all the commands associated with all the breakpoints at |
3931 | this location. Any of these commands could cause the process to | |
3932 | proceed beyond this point, etc. We look out for such changes by | |
3933 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3934 | |
347bddb7 PA |
3935 | Returns true if a breakpoint command resumed the inferior. In that |
3936 | case, it is the caller's responsibility to recall it again with the | |
3937 | bpstat of the current thread. */ | |
3938 | ||
3939 | static int | |
3940 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3941 | { |
3942 | bpstat bs; | |
3943 | struct cleanup *old_chain; | |
347bddb7 | 3944 | int again = 0; |
c906108c SS |
3945 | |
3946 | /* Avoid endless recursion if a `source' command is contained | |
3947 | in bs->commands. */ | |
3948 | if (executing_breakpoint_commands) | |
347bddb7 | 3949 | return 0; |
c906108c SS |
3950 | |
3951 | executing_breakpoint_commands = 1; | |
3952 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3953 | ||
cf6c5ffb TT |
3954 | prevent_dont_repeat (); |
3955 | ||
4a64f543 | 3956 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3957 | bs = *bsp; |
3958 | ||
3959 | breakpoint_proceeded = 0; | |
3960 | for (; bs != NULL; bs = bs->next) | |
3961 | { | |
9add0f1b | 3962 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3963 | struct command_line *cmd; |
3964 | struct cleanup *this_cmd_tree_chain; | |
3965 | ||
3966 | /* Take ownership of the BSP's command tree, if it has one. | |
3967 | ||
3968 | The command tree could legitimately contain commands like | |
3969 | 'step' and 'next', which call clear_proceed_status, which | |
3970 | frees stop_bpstat's command tree. To make sure this doesn't | |
3971 | free the tree we're executing out from under us, we need to | |
3972 | take ownership of the tree ourselves. Since a given bpstat's | |
3973 | commands are only executed once, we don't need to copy it; we | |
3974 | can clear the pointer in the bpstat, and make sure we free | |
3975 | the tree when we're done. */ | |
9add0f1b TT |
3976 | ccmd = bs->commands; |
3977 | bs->commands = NULL; | |
abf85f46 JK |
3978 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
3979 | cmd = ccmd ? ccmd->commands : NULL; | |
3980 | if (command_line_is_silent (cmd)) | |
3981 | { | |
3982 | /* The action has been already done by bpstat_stop_status. */ | |
3983 | cmd = cmd->next; | |
3984 | } | |
6c50ab1c | 3985 | |
c906108c SS |
3986 | while (cmd != NULL) |
3987 | { | |
3988 | execute_control_command (cmd); | |
3989 | ||
3990 | if (breakpoint_proceeded) | |
3991 | break; | |
3992 | else | |
3993 | cmd = cmd->next; | |
3994 | } | |
6c50ab1c JB |
3995 | |
3996 | /* We can free this command tree now. */ | |
3997 | do_cleanups (this_cmd_tree_chain); | |
3998 | ||
c906108c | 3999 | if (breakpoint_proceeded) |
32c1e744 VP |
4000 | { |
4001 | if (target_can_async_p ()) | |
347bddb7 PA |
4002 | /* If we are in async mode, then the target might be still |
4003 | running, not stopped at any breakpoint, so nothing for | |
4004 | us to do here -- just return to the event loop. */ | |
4005 | ; | |
32c1e744 VP |
4006 | else |
4007 | /* In sync mode, when execute_control_command returns | |
4008 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4009 | Breakpoint commands for that stop were not run, since |
4010 | execute_command does not run breakpoint commands -- | |
4011 | only command_line_handler does, but that one is not | |
4012 | involved in execution of breakpoint commands. So, we | |
4013 | can now execute breakpoint commands. It should be | |
4014 | noted that making execute_command do bpstat actions is | |
4015 | not an option -- in this case we'll have recursive | |
4016 | invocation of bpstat for each breakpoint with a | |
4017 | command, and can easily blow up GDB stack. Instead, we | |
4018 | return true, which will trigger the caller to recall us | |
4019 | with the new stop_bpstat. */ | |
4020 | again = 1; | |
4021 | break; | |
32c1e744 | 4022 | } |
c906108c | 4023 | } |
c2b8ed2c | 4024 | do_cleanups (old_chain); |
347bddb7 PA |
4025 | return again; |
4026 | } | |
4027 | ||
4028 | void | |
4029 | bpstat_do_actions (void) | |
4030 | { | |
353d1d73 JK |
4031 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4032 | ||
347bddb7 PA |
4033 | /* Do any commands attached to breakpoint we are stopped at. */ |
4034 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4035 | && target_has_execution | |
4036 | && !is_exited (inferior_ptid) | |
4037 | && !is_executing (inferior_ptid)) | |
4038 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4039 | and only return when it is stopped at the next breakpoint, we | |
4040 | keep doing breakpoint actions until it returns false to | |
4041 | indicate the inferior was not resumed. */ | |
16c381f0 | 4042 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4043 | break; |
353d1d73 JK |
4044 | |
4045 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4046 | } |
4047 | ||
fa4727a6 DJ |
4048 | /* Print out the (old or new) value associated with a watchpoint. */ |
4049 | ||
4050 | static void | |
4051 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4052 | { | |
4053 | if (val == NULL) | |
4054 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4055 | else | |
79a45b7d TT |
4056 | { |
4057 | struct value_print_options opts; | |
4058 | get_user_print_options (&opts); | |
4059 | value_print (val, stream, &opts); | |
4060 | } | |
fa4727a6 DJ |
4061 | } |
4062 | ||
e514a9d6 | 4063 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4064 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4065 | 'print_it' in the bpstat structure. Under some circumstances we |
4066 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4067 | normal_stop(). */ |
e514a9d6 JM |
4068 | |
4069 | static enum print_stop_action | |
4070 | print_bp_stop_message (bpstat bs) | |
4071 | { | |
4072 | switch (bs->print_it) | |
4073 | { | |
4074 | case print_it_noop: | |
4a64f543 | 4075 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4076 | return PRINT_UNKNOWN; |
4077 | break; | |
4078 | ||
4079 | case print_it_done: | |
4080 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4081 | relevant messages. */ |
e514a9d6 JM |
4082 | return PRINT_SRC_AND_LOC; |
4083 | break; | |
4084 | ||
4085 | case print_it_normal: | |
4f8d1dc6 | 4086 | { |
f431efe5 PA |
4087 | struct breakpoint *b = bs->breakpoint_at; |
4088 | ||
1a6a67de TJB |
4089 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4090 | which has since been deleted. */ | |
4091 | if (b == NULL) | |
4092 | return PRINT_UNKNOWN; | |
4093 | ||
348d480f PA |
4094 | /* Normal case. Call the breakpoint's print_it method. */ |
4095 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4096 | } |
348d480f | 4097 | break; |
3086aeae | 4098 | |
e514a9d6 | 4099 | default: |
8e65ff28 | 4100 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4101 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4102 | break; |
c906108c | 4103 | } |
c906108c SS |
4104 | } |
4105 | ||
edcc5120 TT |
4106 | /* A helper function that prints a shared library stopped event. */ |
4107 | ||
4108 | static void | |
4109 | print_solib_event (int is_catchpoint) | |
4110 | { | |
4111 | int any_deleted | |
4112 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4113 | int any_added | |
4114 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4115 | ||
4116 | if (!is_catchpoint) | |
4117 | { | |
4118 | if (any_added || any_deleted) | |
4119 | ui_out_text (current_uiout, | |
4120 | _("Stopped due to shared library event:\n")); | |
4121 | else | |
4122 | ui_out_text (current_uiout, | |
4123 | _("Stopped due to shared library event (no " | |
4124 | "libraries added or removed)\n")); | |
4125 | } | |
4126 | ||
4127 | if (ui_out_is_mi_like_p (current_uiout)) | |
4128 | ui_out_field_string (current_uiout, "reason", | |
4129 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4130 | ||
4131 | if (any_deleted) | |
4132 | { | |
4133 | struct cleanup *cleanup; | |
4134 | char *name; | |
4135 | int ix; | |
4136 | ||
4137 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4138 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4139 | "removed"); | |
4140 | for (ix = 0; | |
4141 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4142 | ix, name); | |
4143 | ++ix) | |
4144 | { | |
4145 | if (ix > 0) | |
4146 | ui_out_text (current_uiout, " "); | |
4147 | ui_out_field_string (current_uiout, "library", name); | |
4148 | ui_out_text (current_uiout, "\n"); | |
4149 | } | |
4150 | ||
4151 | do_cleanups (cleanup); | |
4152 | } | |
4153 | ||
4154 | if (any_added) | |
4155 | { | |
4156 | struct so_list *iter; | |
4157 | int ix; | |
4158 | struct cleanup *cleanup; | |
4159 | ||
4160 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4161 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4162 | "added"); | |
4163 | for (ix = 0; | |
4164 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4165 | ix, iter); | |
4166 | ++ix) | |
4167 | { | |
4168 | if (ix > 0) | |
4169 | ui_out_text (current_uiout, " "); | |
4170 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4171 | ui_out_text (current_uiout, "\n"); | |
4172 | } | |
4173 | ||
4174 | do_cleanups (cleanup); | |
4175 | } | |
4176 | } | |
4177 | ||
e514a9d6 JM |
4178 | /* Print a message indicating what happened. This is called from |
4179 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4180 | list - a list of the eventpoints that caused this stop. KIND is |
4181 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4182 | routine calls the generic print routine for printing a message |
4183 | about reasons for stopping. This will print (for example) the | |
4184 | "Breakpoint n," part of the output. The return value of this | |
4185 | routine is one of: | |
c906108c | 4186 | |
4a64f543 | 4187 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4188 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4189 | code to print the location. An example is |
c5aa993b JM |
4190 | "Breakpoint 1, " which should be followed by |
4191 | the location. | |
917317f4 | 4192 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4193 | to also print the location part of the message. |
4194 | An example is the catch/throw messages, which | |
4a64f543 | 4195 | don't require a location appended to the end. |
917317f4 | 4196 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4197 | further info to be printed. */ |
c906108c | 4198 | |
917317f4 | 4199 | enum print_stop_action |
36dfb11c | 4200 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4201 | { |
4202 | int val; | |
c5aa993b | 4203 | |
c906108c | 4204 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4205 | (Currently all watchpoints go on the bpstat whether hit or not. |
4206 | That probably could (should) be changed, provided care is taken | |
c906108c | 4207 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4208 | for (; bs; bs = bs->next) |
4209 | { | |
4210 | val = print_bp_stop_message (bs); | |
4211 | if (val == PRINT_SRC_ONLY | |
4212 | || val == PRINT_SRC_AND_LOC | |
4213 | || val == PRINT_NOTHING) | |
4214 | return val; | |
4215 | } | |
c906108c | 4216 | |
36dfb11c TT |
4217 | /* If we had hit a shared library event breakpoint, |
4218 | print_bp_stop_message would print out this message. If we hit an | |
4219 | OS-level shared library event, do the same thing. */ | |
4220 | if (kind == TARGET_WAITKIND_LOADED) | |
4221 | { | |
edcc5120 | 4222 | print_solib_event (0); |
36dfb11c TT |
4223 | return PRINT_NOTHING; |
4224 | } | |
4225 | ||
e514a9d6 | 4226 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4227 | with and nothing was printed. */ |
917317f4 | 4228 | return PRINT_UNKNOWN; |
c906108c SS |
4229 | } |
4230 | ||
4a64f543 MS |
4231 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
4232 | used inside a catch_errors to evaluate the breakpoint condition. | |
4233 | The argument is a "struct expression *" that has been cast to a | |
4234 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
4235 | |
4236 | static int | |
4efb68b1 | 4237 | breakpoint_cond_eval (void *exp) |
c906108c | 4238 | { |
278cd55f | 4239 | struct value *mark = value_mark (); |
c5aa993b | 4240 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4241 | |
c906108c SS |
4242 | value_free_to_mark (mark); |
4243 | return i; | |
4244 | } | |
4245 | ||
5760d0ab | 4246 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4247 | |
4248 | static bpstat | |
5760d0ab | 4249 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4250 | { |
4251 | bpstat bs; | |
4252 | ||
4253 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4254 | bs->next = NULL; |
4255 | **bs_link_pointer = bs; | |
4256 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4257 | bs->breakpoint_at = bl->owner; |
4258 | bs->bp_location_at = bl; | |
4259 | incref_bp_location (bl); | |
c906108c SS |
4260 | /* If the condition is false, etc., don't do the commands. */ |
4261 | bs->commands = NULL; | |
4262 | bs->old_val = NULL; | |
4263 | bs->print_it = print_it_normal; | |
4264 | return bs; | |
4265 | } | |
4266 | \f | |
d983da9c DJ |
4267 | /* The target has stopped with waitstatus WS. Check if any hardware |
4268 | watchpoints have triggered, according to the target. */ | |
4269 | ||
4270 | int | |
4271 | watchpoints_triggered (struct target_waitstatus *ws) | |
4272 | { | |
d92524f1 | 4273 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4274 | CORE_ADDR addr; |
4275 | struct breakpoint *b; | |
4276 | ||
4277 | if (!stopped_by_watchpoint) | |
4278 | { | |
4279 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4280 | as not triggered. */ | |
4281 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4282 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4283 | { |
4284 | struct watchpoint *w = (struct watchpoint *) b; | |
4285 | ||
4286 | w->watchpoint_triggered = watch_triggered_no; | |
4287 | } | |
d983da9c DJ |
4288 | |
4289 | return 0; | |
4290 | } | |
4291 | ||
4292 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4293 | { | |
4294 | /* We were stopped by a watchpoint, but we don't know where. | |
4295 | Mark all watchpoints as unknown. */ | |
4296 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4297 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4298 | { |
4299 | struct watchpoint *w = (struct watchpoint *) b; | |
4300 | ||
4301 | w->watchpoint_triggered = watch_triggered_unknown; | |
4302 | } | |
d983da9c DJ |
4303 | |
4304 | return stopped_by_watchpoint; | |
4305 | } | |
4306 | ||
4307 | /* The target could report the data address. Mark watchpoints | |
4308 | affected by this data address as triggered, and all others as not | |
4309 | triggered. */ | |
4310 | ||
4311 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4312 | if (is_hardware_watchpoint (b)) |
d983da9c | 4313 | { |
3a5c3e22 | 4314 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4315 | struct bp_location *loc; |
d983da9c | 4316 | |
3a5c3e22 | 4317 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4318 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4319 | { |
3a5c3e22 | 4320 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4321 | { |
3a5c3e22 PA |
4322 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4323 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4324 | |
4325 | if (newaddr == start) | |
4326 | { | |
3a5c3e22 | 4327 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4328 | break; |
4329 | } | |
4330 | } | |
4331 | /* Exact match not required. Within range is sufficient. */ | |
4332 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4333 | addr, loc->address, | |
4334 | loc->length)) | |
4335 | { | |
3a5c3e22 | 4336 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4337 | break; |
4338 | } | |
4339 | } | |
d983da9c DJ |
4340 | } |
4341 | ||
4342 | return 1; | |
4343 | } | |
4344 | ||
c906108c SS |
4345 | /* Possible return values for watchpoint_check (this can't be an enum |
4346 | because of check_errors). */ | |
4347 | /* The watchpoint has been deleted. */ | |
4348 | #define WP_DELETED 1 | |
4349 | /* The value has changed. */ | |
4350 | #define WP_VALUE_CHANGED 2 | |
4351 | /* The value has not changed. */ | |
4352 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4353 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4354 | #define WP_IGNORE 4 | |
c906108c SS |
4355 | |
4356 | #define BP_TEMPFLAG 1 | |
4357 | #define BP_HARDWAREFLAG 2 | |
4358 | ||
4a64f543 MS |
4359 | /* Evaluate watchpoint condition expression and check if its value |
4360 | changed. | |
553e4c11 JB |
4361 | |
4362 | P should be a pointer to struct bpstat, but is defined as a void * | |
4363 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4364 | |
4365 | static int | |
4efb68b1 | 4366 | watchpoint_check (void *p) |
c906108c SS |
4367 | { |
4368 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4369 | struct watchpoint *b; |
c906108c SS |
4370 | struct frame_info *fr; |
4371 | int within_current_scope; | |
4372 | ||
f431efe5 | 4373 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4374 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4375 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4376 | |
f6bc2008 PA |
4377 | /* If this is a local watchpoint, we only want to check if the |
4378 | watchpoint frame is in scope if the current thread is the thread | |
4379 | that was used to create the watchpoint. */ | |
4380 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4381 | return WP_IGNORE; |
f6bc2008 | 4382 | |
c906108c SS |
4383 | if (b->exp_valid_block == NULL) |
4384 | within_current_scope = 1; | |
4385 | else | |
4386 | { | |
edb3359d DJ |
4387 | struct frame_info *frame = get_current_frame (); |
4388 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4389 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4390 | ||
4a64f543 MS |
4391 | /* in_function_epilogue_p() returns a non-zero value if we're |
4392 | still in the function but the stack frame has already been | |
4393 | invalidated. Since we can't rely on the values of local | |
4394 | variables after the stack has been destroyed, we are treating | |
4395 | the watchpoint in that state as `not changed' without further | |
4396 | checking. Don't mark watchpoints as changed if the current | |
4397 | frame is in an epilogue - even if they are in some other | |
4398 | frame, our view of the stack is likely to be wrong and | |
4399 | frame_find_by_id could error out. */ | |
a0f49112 | 4400 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 4401 | return WP_IGNORE; |
a0f49112 | 4402 | |
101dcfbe | 4403 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4404 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4405 | |
4406 | /* If we've gotten confused in the unwinder, we might have | |
4407 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4408 | if (within_current_scope) |
4409 | { | |
4410 | struct symbol *function; | |
4411 | ||
4412 | function = get_frame_function (fr); | |
4413 | if (function == NULL | |
4414 | || !contained_in (b->exp_valid_block, | |
4415 | SYMBOL_BLOCK_VALUE (function))) | |
4416 | within_current_scope = 0; | |
4417 | } | |
69fbadd5 | 4418 | |
edb3359d | 4419 | if (within_current_scope) |
c906108c SS |
4420 | /* If we end up stopping, the current frame will get selected |
4421 | in normal_stop. So this call to select_frame won't affect | |
4422 | the user. */ | |
0f7d239c | 4423 | select_frame (fr); |
c906108c | 4424 | } |
c5aa993b | 4425 | |
c906108c SS |
4426 | if (within_current_scope) |
4427 | { | |
4a64f543 MS |
4428 | /* We use value_{,free_to_}mark because it could be a *long* |
4429 | time before we return to the command level and call | |
4430 | free_all_values. We can't call free_all_values because we | |
4431 | might be in the middle of evaluating a function call. */ | |
c906108c | 4432 | |
0cf6dd15 | 4433 | int pc = 0; |
9c06b0b4 | 4434 | struct value *mark; |
fa4727a6 DJ |
4435 | struct value *new_val; |
4436 | ||
3a5c3e22 | 4437 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
4438 | /* Since we don't know the exact trigger address (from |
4439 | stopped_data_address), just tell the user we've triggered | |
4440 | a mask watchpoint. */ | |
4441 | return WP_VALUE_CHANGED; | |
4442 | ||
4443 | mark = value_mark (); | |
0cf6dd15 | 4444 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 4445 | |
4a64f543 MS |
4446 | /* We use value_equal_contents instead of value_equal because |
4447 | the latter coerces an array to a pointer, thus comparing just | |
4448 | the address of the array instead of its contents. This is | |
4449 | not what we want. */ | |
fa4727a6 | 4450 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4451 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4452 | { |
fa4727a6 DJ |
4453 | if (new_val != NULL) |
4454 | { | |
4455 | release_value (new_val); | |
4456 | value_free_to_mark (mark); | |
4457 | } | |
c906108c SS |
4458 | bs->old_val = b->val; |
4459 | b->val = new_val; | |
fa4727a6 | 4460 | b->val_valid = 1; |
c906108c SS |
4461 | return WP_VALUE_CHANGED; |
4462 | } | |
4463 | else | |
4464 | { | |
60e1c644 | 4465 | /* Nothing changed. */ |
c906108c | 4466 | value_free_to_mark (mark); |
c906108c SS |
4467 | return WP_VALUE_NOT_CHANGED; |
4468 | } | |
4469 | } | |
4470 | else | |
4471 | { | |
79a45e25 PA |
4472 | struct ui_out *uiout = current_uiout; |
4473 | ||
c906108c | 4474 | /* This seems like the only logical thing to do because |
c5aa993b JM |
4475 | if we temporarily ignored the watchpoint, then when |
4476 | we reenter the block in which it is valid it contains | |
4477 | garbage (in the case of a function, it may have two | |
4478 | garbage values, one before and one after the prologue). | |
4479 | So we can't even detect the first assignment to it and | |
4480 | watch after that (since the garbage may or may not equal | |
4481 | the first value assigned). */ | |
348d480f PA |
4482 | /* We print all the stop information in |
4483 | breakpoint_ops->print_it, but in this case, by the time we | |
4484 | call breakpoint_ops->print_it this bp will be deleted | |
4485 | already. So we have no choice but print the information | |
4486 | here. */ | |
9dc5e2a9 | 4487 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
4488 | ui_out_field_string |
4489 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 4490 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 4491 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
4492 | ui_out_text (uiout, |
4493 | " deleted because the program has left the block in\n\ | |
8b93c638 | 4494 | which its expression is valid.\n"); |
4ce44c66 | 4495 | |
cdac0397 | 4496 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 4497 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 4498 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4499 | |
4500 | return WP_DELETED; | |
4501 | } | |
4502 | } | |
4503 | ||
18a18393 | 4504 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4505 | breakpoint location BL. This function does not check if we should |
4506 | stop, only if BL explains the stop. */ | |
4507 | ||
18a18393 | 4508 | static int |
6c95b8df | 4509 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
4510 | struct address_space *aspace, CORE_ADDR bp_addr, |
4511 | const struct target_waitstatus *ws) | |
18a18393 VP |
4512 | { |
4513 | struct breakpoint *b = bl->owner; | |
4514 | ||
348d480f | 4515 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4516 | gdb_assert (b != NULL); |
4517 | ||
09ac7c10 | 4518 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4519 | } |
4520 | ||
3a5c3e22 PA |
4521 | /* Determine if the watched values have actually changed, and we |
4522 | should stop. If not, set BS->stop to 0. */ | |
4523 | ||
18a18393 VP |
4524 | static void |
4525 | bpstat_check_watchpoint (bpstat bs) | |
4526 | { | |
2bdf28a0 | 4527 | const struct bp_location *bl; |
3a5c3e22 | 4528 | struct watchpoint *b; |
2bdf28a0 JK |
4529 | |
4530 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4531 | bl = bs->bp_location_at; |
2bdf28a0 | 4532 | gdb_assert (bl != NULL); |
3a5c3e22 | 4533 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4534 | gdb_assert (b != NULL); |
18a18393 | 4535 | |
18a18393 | 4536 | { |
18a18393 VP |
4537 | int must_check_value = 0; |
4538 | ||
3a5c3e22 | 4539 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
4540 | /* For a software watchpoint, we must always check the |
4541 | watched value. */ | |
4542 | must_check_value = 1; | |
4543 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4544 | /* We have a hardware watchpoint (read, write, or access) | |
4545 | and the target earlier reported an address watched by | |
4546 | this watchpoint. */ | |
4547 | must_check_value = 1; | |
4548 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 4549 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
4550 | /* We were stopped by a hardware watchpoint, but the target could |
4551 | not report the data address. We must check the watchpoint's | |
4552 | value. Access and read watchpoints are out of luck; without | |
4553 | a data address, we can't figure it out. */ | |
4554 | must_check_value = 1; | |
3a5c3e22 | 4555 | |
18a18393 VP |
4556 | if (must_check_value) |
4557 | { | |
3e43a32a MS |
4558 | char *message |
4559 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 4560 | b->base.number); |
18a18393 VP |
4561 | struct cleanup *cleanups = make_cleanup (xfree, message); |
4562 | int e = catch_errors (watchpoint_check, bs, message, | |
4563 | RETURN_MASK_ALL); | |
4564 | do_cleanups (cleanups); | |
4565 | switch (e) | |
4566 | { | |
4567 | case WP_DELETED: | |
4568 | /* We've already printed what needs to be printed. */ | |
4569 | bs->print_it = print_it_done; | |
4570 | /* Stop. */ | |
4571 | break; | |
60e1c644 PA |
4572 | case WP_IGNORE: |
4573 | bs->print_it = print_it_noop; | |
4574 | bs->stop = 0; | |
4575 | break; | |
18a18393 | 4576 | case WP_VALUE_CHANGED: |
3a5c3e22 | 4577 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 4578 | { |
85d721b8 PA |
4579 | /* There are two cases to consider here: |
4580 | ||
4a64f543 | 4581 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
4582 | In that case, trust the target, and always report |
4583 | the watchpoint hit to the user. Even though | |
4584 | reads don't cause value changes, the value may | |
4585 | have changed since the last time it was read, and | |
4586 | since we're not trapping writes, we will not see | |
4587 | those, and as such we should ignore our notion of | |
4588 | old value. | |
4589 | ||
4a64f543 | 4590 | 2. We're watching the triggered memory for both |
85d721b8 PA |
4591 | reads and writes. There are two ways this may |
4592 | happen: | |
4593 | ||
4a64f543 | 4594 | 2.1. This is a target that can't break on data |
85d721b8 PA |
4595 | reads only, but can break on accesses (reads or |
4596 | writes), such as e.g., x86. We detect this case | |
4597 | at the time we try to insert read watchpoints. | |
4598 | ||
4a64f543 | 4599 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
4600 | watchpoints, but, the user set an access or write |
4601 | watchpoint watching the same memory as this read | |
4602 | watchpoint. | |
4603 | ||
4604 | If we're watching memory writes as well as reads, | |
4605 | ignore watchpoint hits when we find that the | |
4606 | value hasn't changed, as reads don't cause | |
4607 | changes. This still gives false positives when | |
4608 | the program writes the same value to memory as | |
4609 | what there was already in memory (we will confuse | |
4610 | it for a read), but it's much better than | |
4611 | nothing. */ | |
4612 | ||
4613 | int other_write_watchpoint = 0; | |
4614 | ||
4615 | if (bl->watchpoint_type == hw_read) | |
4616 | { | |
4617 | struct breakpoint *other_b; | |
4618 | ||
4619 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
4620 | if (other_b->type == bp_hardware_watchpoint |
4621 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 4622 | { |
3a5c3e22 PA |
4623 | struct watchpoint *other_w = |
4624 | (struct watchpoint *) other_b; | |
4625 | ||
4626 | if (other_w->watchpoint_triggered | |
4627 | == watch_triggered_yes) | |
4628 | { | |
4629 | other_write_watchpoint = 1; | |
4630 | break; | |
4631 | } | |
85d721b8 PA |
4632 | } |
4633 | } | |
4634 | ||
4635 | if (other_write_watchpoint | |
4636 | || bl->watchpoint_type == hw_access) | |
4637 | { | |
4638 | /* We're watching the same memory for writes, | |
4639 | and the value changed since the last time we | |
4640 | updated it, so this trap must be for a write. | |
4641 | Ignore it. */ | |
4642 | bs->print_it = print_it_noop; | |
4643 | bs->stop = 0; | |
4644 | } | |
18a18393 VP |
4645 | } |
4646 | break; | |
4647 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
4648 | if (b->base.type == bp_hardware_watchpoint |
4649 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
4650 | { |
4651 | /* Don't stop: write watchpoints shouldn't fire if | |
4652 | the value hasn't changed. */ | |
4653 | bs->print_it = print_it_noop; | |
4654 | bs->stop = 0; | |
4655 | } | |
4656 | /* Stop. */ | |
4657 | break; | |
4658 | default: | |
4659 | /* Can't happen. */ | |
4660 | case 0: | |
4661 | /* Error from catch_errors. */ | |
3a5c3e22 | 4662 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 4663 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
4664 | /* We've already printed what needs to be printed. */ |
4665 | bs->print_it = print_it_done; | |
4666 | break; | |
4667 | } | |
4668 | } | |
4669 | else /* must_check_value == 0 */ | |
4670 | { | |
4671 | /* This is a case where some watchpoint(s) triggered, but | |
4672 | not at the address of this watchpoint, or else no | |
4673 | watchpoint triggered after all. So don't print | |
4674 | anything for this watchpoint. */ | |
4675 | bs->print_it = print_it_noop; | |
4676 | bs->stop = 0; | |
4677 | } | |
4678 | } | |
4679 | } | |
4680 | ||
4681 | ||
4682 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4683 | of breakpoint referred to by BS. If we should not stop for this | |
4684 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4685 | |
18a18393 VP |
4686 | static void |
4687 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4688 | { | |
4689 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
4690 | const struct bp_location *bl; |
4691 | struct breakpoint *b; | |
4692 | ||
4693 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4694 | bl = bs->bp_location_at; |
2bdf28a0 | 4695 | gdb_assert (bl != NULL); |
f431efe5 | 4696 | b = bs->breakpoint_at; |
2bdf28a0 | 4697 | gdb_assert (b != NULL); |
18a18393 | 4698 | |
b775012e LM |
4699 | /* Even if the target evaluated the condition on its end and notified GDB, we |
4700 | need to do so again since GDB does not know if we stopped due to a | |
4701 | breakpoint or a single step breakpoint. */ | |
4702 | ||
18a18393 | 4703 | if (frame_id_p (b->frame_id) |
edb3359d | 4704 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4705 | bs->stop = 0; |
4706 | else if (bs->stop) | |
4707 | { | |
4708 | int value_is_zero = 0; | |
60e1c644 PA |
4709 | struct expression *cond; |
4710 | ||
7371cf6d PM |
4711 | /* Evaluate Python breakpoints that have a "stop" |
4712 | method implemented. */ | |
4713 | if (b->py_bp_object) | |
4714 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
4715 | ||
60e1c644 | 4716 | if (is_watchpoint (b)) |
3a5c3e22 PA |
4717 | { |
4718 | struct watchpoint *w = (struct watchpoint *) b; | |
4719 | ||
4720 | cond = w->cond_exp; | |
4721 | } | |
60e1c644 PA |
4722 | else |
4723 | cond = bl->cond; | |
4724 | ||
f431efe5 | 4725 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4726 | { |
60e1c644 | 4727 | int within_current_scope = 1; |
3a5c3e22 | 4728 | struct watchpoint * w; |
60e1c644 | 4729 | |
c5bc3a77 DJ |
4730 | /* We use value_mark and value_free_to_mark because it could |
4731 | be a long time before we return to the command level and | |
4732 | call free_all_values. We can't call free_all_values | |
4733 | because we might be in the middle of evaluating a | |
4734 | function call. */ | |
4735 | struct value *mark = value_mark (); | |
4736 | ||
3a5c3e22 PA |
4737 | if (is_watchpoint (b)) |
4738 | w = (struct watchpoint *) b; | |
4739 | else | |
4740 | w = NULL; | |
4741 | ||
edb3359d DJ |
4742 | /* Need to select the frame, with all that implies so that |
4743 | the conditions will have the right context. Because we | |
4744 | use the frame, we will not see an inlined function's | |
4745 | variables when we arrive at a breakpoint at the start | |
4746 | of the inlined function; the current frame will be the | |
4747 | call site. */ | |
3a5c3e22 | 4748 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
4749 | select_frame (get_current_frame ()); |
4750 | else | |
4751 | { | |
4752 | struct frame_info *frame; | |
4753 | ||
4754 | /* For local watchpoint expressions, which particular | |
4755 | instance of a local is being watched matters, so we | |
4756 | keep track of the frame to evaluate the expression | |
4757 | in. To evaluate the condition however, it doesn't | |
4758 | really matter which instantiation of the function | |
4759 | where the condition makes sense triggers the | |
4760 | watchpoint. This allows an expression like "watch | |
4761 | global if q > 10" set in `func', catch writes to | |
4762 | global on all threads that call `func', or catch | |
4763 | writes on all recursive calls of `func' by a single | |
4764 | thread. We simply always evaluate the condition in | |
4765 | the innermost frame that's executing where it makes | |
4766 | sense to evaluate the condition. It seems | |
4767 | intuitive. */ | |
3a5c3e22 | 4768 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
4769 | if (frame != NULL) |
4770 | select_frame (frame); | |
4771 | else | |
4772 | within_current_scope = 0; | |
4773 | } | |
4774 | if (within_current_scope) | |
4775 | value_is_zero | |
4776 | = catch_errors (breakpoint_cond_eval, cond, | |
4777 | "Error in testing breakpoint condition:\n", | |
4778 | RETURN_MASK_ALL); | |
4779 | else | |
4780 | { | |
4781 | warning (_("Watchpoint condition cannot be tested " | |
4782 | "in the current scope")); | |
4783 | /* If we failed to set the right context for this | |
4784 | watchpoint, unconditionally report it. */ | |
4785 | value_is_zero = 0; | |
4786 | } | |
4a64f543 | 4787 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4788 | value_free_to_mark (mark); |
18a18393 | 4789 | } |
60e1c644 PA |
4790 | |
4791 | if (cond && value_is_zero) | |
18a18393 VP |
4792 | { |
4793 | bs->stop = 0; | |
4794 | } | |
4795 | else if (b->thread != -1 && b->thread != thread_id) | |
4796 | { | |
4797 | bs->stop = 0; | |
4798 | } | |
4799 | else if (b->ignore_count > 0) | |
4800 | { | |
4801 | b->ignore_count--; | |
4802 | annotate_ignore_count_change (); | |
4803 | bs->stop = 0; | |
4a64f543 | 4804 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 4805 | ++(b->hit_count); |
8d3788bd | 4806 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
4807 | } |
4808 | } | |
4809 | } | |
4810 | ||
4811 | ||
9709f61c | 4812 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4813 | BP_ADDR in thread PTID. |
c906108c | 4814 | |
d983da9c | 4815 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4816 | don't understand this stop. Result is a chain of bpstat's such |
4817 | that: | |
c906108c | 4818 | |
c5aa993b | 4819 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4820 | |
c5aa993b | 4821 | if we understand why we stopped, the result is not null. |
c906108c | 4822 | |
c5aa993b JM |
4823 | Each element of the chain refers to a particular breakpoint or |
4824 | watchpoint at which we have stopped. (We may have stopped for | |
4825 | several reasons concurrently.) | |
c906108c | 4826 | |
c5aa993b JM |
4827 | Each element of the chain has valid next, breakpoint_at, |
4828 | commands, FIXME??? fields. */ | |
c906108c SS |
4829 | |
4830 | bpstat | |
6c95b8df | 4831 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
4832 | CORE_ADDR bp_addr, ptid_t ptid, |
4833 | const struct target_waitstatus *ws) | |
c906108c | 4834 | { |
0d381245 | 4835 | struct breakpoint *b = NULL; |
afe38095 | 4836 | struct bp_location *bl; |
20874c92 | 4837 | struct bp_location *loc; |
5760d0ab JK |
4838 | /* First item of allocated bpstat's. */ |
4839 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4840 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4841 | bpstat bs; |
20874c92 | 4842 | int ix; |
429374b8 | 4843 | int need_remove_insert; |
f431efe5 | 4844 | int removed_any; |
c906108c | 4845 | |
f431efe5 PA |
4846 | /* First, build the bpstat chain with locations that explain a |
4847 | target stop, while being careful to not set the target running, | |
4848 | as that may invalidate locations (in particular watchpoint | |
4849 | locations are recreated). Resuming will happen here with | |
4850 | breakpoint conditions or watchpoint expressions that include | |
4851 | inferior function calls. */ | |
c5aa993b | 4852 | |
429374b8 JK |
4853 | ALL_BREAKPOINTS (b) |
4854 | { | |
4855 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4856 | continue; | |
a5606eee | 4857 | |
429374b8 JK |
4858 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4859 | { | |
4a64f543 MS |
4860 | /* For hardware watchpoints, we look only at the first |
4861 | location. The watchpoint_check function will work on the | |
4862 | entire expression, not the individual locations. For | |
4863 | read watchpoints, the watchpoints_triggered function has | |
4864 | checked all locations already. */ | |
429374b8 JK |
4865 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4866 | break; | |
18a18393 | 4867 | |
429374b8 JK |
4868 | if (bl->shlib_disabled) |
4869 | continue; | |
c5aa993b | 4870 | |
09ac7c10 | 4871 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 4872 | continue; |
c5aa993b | 4873 | |
4a64f543 MS |
4874 | /* Come here if it's a watchpoint, or if the break address |
4875 | matches. */ | |
c5aa993b | 4876 | |
4a64f543 MS |
4877 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4878 | explain stop. */ | |
c5aa993b | 4879 | |
f431efe5 PA |
4880 | /* Assume we stop. Should we find a watchpoint that is not |
4881 | actually triggered, or if the condition of the breakpoint | |
4882 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4883 | bs->stop = 1; |
4884 | bs->print = 1; | |
d983da9c | 4885 | |
f431efe5 PA |
4886 | /* If this is a scope breakpoint, mark the associated |
4887 | watchpoint as triggered so that we will handle the | |
4888 | out-of-scope event. We'll get to the watchpoint next | |
4889 | iteration. */ | |
d0fb5eae | 4890 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
4891 | { |
4892 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
4893 | ||
4894 | w->watchpoint_triggered = watch_triggered_yes; | |
4895 | } | |
f431efe5 PA |
4896 | } |
4897 | } | |
4898 | ||
4899 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4900 | { | |
f1310107 | 4901 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 4902 | { |
5760d0ab | 4903 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4904 | /* For hits of moribund locations, we should just proceed. */ |
4905 | bs->stop = 0; | |
4906 | bs->print = 0; | |
4907 | bs->print_it = print_it_noop; | |
4908 | } | |
4909 | } | |
4910 | ||
edcc5120 TT |
4911 | /* A bit of special processing for shlib breakpoints. We need to |
4912 | process solib loading here, so that the lists of loaded and | |
4913 | unloaded libraries are correct before we handle "catch load" and | |
4914 | "catch unload". */ | |
4915 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
4916 | { | |
5d268276 | 4917 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
4918 | { |
4919 | handle_solib_event (); | |
4920 | break; | |
4921 | } | |
4922 | } | |
4923 | ||
f431efe5 PA |
4924 | /* Now go through the locations that caused the target to stop, and |
4925 | check whether we're interested in reporting this stop to higher | |
4926 | layers, or whether we should resume the target transparently. */ | |
4927 | ||
4928 | removed_any = 0; | |
4929 | ||
5760d0ab | 4930 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4931 | { |
4932 | if (!bs->stop) | |
4933 | continue; | |
4934 | ||
f431efe5 | 4935 | b = bs->breakpoint_at; |
348d480f PA |
4936 | b->ops->check_status (bs); |
4937 | if (bs->stop) | |
28010a5d | 4938 | { |
348d480f | 4939 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 4940 | |
429374b8 JK |
4941 | if (bs->stop) |
4942 | { | |
4943 | ++(b->hit_count); | |
8d3788bd | 4944 | observer_notify_breakpoint_modified (b); |
c906108c | 4945 | |
4a64f543 | 4946 | /* We will stop here. */ |
429374b8 JK |
4947 | if (b->disposition == disp_disable) |
4948 | { | |
816338b5 SS |
4949 | --(b->enable_count); |
4950 | if (b->enable_count <= 0 | |
4951 | && b->enable_state != bp_permanent) | |
429374b8 | 4952 | b->enable_state = bp_disabled; |
f431efe5 | 4953 | removed_any = 1; |
429374b8 JK |
4954 | } |
4955 | if (b->silent) | |
4956 | bs->print = 0; | |
4957 | bs->commands = b->commands; | |
9add0f1b | 4958 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
4959 | if (command_line_is_silent (bs->commands |
4960 | ? bs->commands->commands : NULL)) | |
4961 | bs->print = 0; | |
429374b8 JK |
4962 | } |
4963 | ||
348d480f | 4964 | } |
a9b3a50f PA |
4965 | |
4966 | /* Print nothing for this entry if we don't stop or don't | |
4967 | print. */ | |
4968 | if (!bs->stop || !bs->print) | |
4969 | bs->print_it = print_it_noop; | |
429374b8 | 4970 | } |
876fa593 | 4971 | |
d983da9c DJ |
4972 | /* If we aren't stopping, the value of some hardware watchpoint may |
4973 | not have changed, but the intermediate memory locations we are | |
4974 | watching may have. Don't bother if we're stopping; this will get | |
4975 | done later. */ | |
d832cb68 | 4976 | need_remove_insert = 0; |
5760d0ab JK |
4977 | if (! bpstat_causes_stop (bs_head)) |
4978 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4979 | if (!bs->stop |
f431efe5 PA |
4980 | && bs->breakpoint_at |
4981 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4982 | { |
3a5c3e22 PA |
4983 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
4984 | ||
4985 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 4986 | need_remove_insert = 1; |
d983da9c DJ |
4987 | } |
4988 | ||
d832cb68 | 4989 | if (need_remove_insert) |
2d134ed3 | 4990 | update_global_location_list (1); |
f431efe5 PA |
4991 | else if (removed_any) |
4992 | update_global_location_list (0); | |
d832cb68 | 4993 | |
5760d0ab | 4994 | return bs_head; |
c906108c | 4995 | } |
628fe4e4 JK |
4996 | |
4997 | static void | |
4998 | handle_jit_event (void) | |
4999 | { | |
5000 | struct frame_info *frame; | |
5001 | struct gdbarch *gdbarch; | |
5002 | ||
5003 | /* Switch terminal for any messages produced by | |
5004 | breakpoint_re_set. */ | |
5005 | target_terminal_ours_for_output (); | |
5006 | ||
5007 | frame = get_current_frame (); | |
5008 | gdbarch = get_frame_arch (frame); | |
5009 | ||
5010 | jit_event_handler (gdbarch); | |
5011 | ||
5012 | target_terminal_inferior (); | |
5013 | } | |
5014 | ||
edcc5120 TT |
5015 | /* Handle an solib event by calling solib_add. */ |
5016 | ||
5017 | void | |
5018 | handle_solib_event (void) | |
5019 | { | |
5020 | clear_program_space_solib_cache (current_inferior ()->pspace); | |
5021 | ||
5022 | /* Check for any newly added shared libraries if we're supposed to | |
5023 | be adding them automatically. Switch terminal for any messages | |
5024 | produced by breakpoint_re_set. */ | |
5025 | target_terminal_ours_for_output (); | |
5026 | #ifdef SOLIB_ADD | |
5027 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
5028 | #else | |
5029 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
5030 | #endif | |
5031 | target_terminal_inferior (); | |
5032 | } | |
5033 | ||
628fe4e4 JK |
5034 | /* Prepare WHAT final decision for infrun. */ |
5035 | ||
5036 | /* Decide what infrun needs to do with this bpstat. */ | |
5037 | ||
c906108c | 5038 | struct bpstat_what |
0e30163f | 5039 | bpstat_what (bpstat bs_head) |
c906108c | 5040 | { |
c906108c | 5041 | struct bpstat_what retval; |
628fe4e4 | 5042 | int jit_event = 0; |
0e30163f | 5043 | bpstat bs; |
c906108c | 5044 | |
628fe4e4 | 5045 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5046 | retval.call_dummy = STOP_NONE; |
186c406b | 5047 | retval.is_longjmp = 0; |
628fe4e4 | 5048 | |
0e30163f | 5049 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5050 | { |
628fe4e4 JK |
5051 | /* Extract this BS's action. After processing each BS, we check |
5052 | if its action overrides all we've seem so far. */ | |
5053 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5054 | enum bptype bptype; | |
5055 | ||
c906108c | 5056 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5057 | { |
5058 | /* I suspect this can happen if it was a momentary | |
5059 | breakpoint which has since been deleted. */ | |
5060 | bptype = bp_none; | |
5061 | } | |
20874c92 | 5062 | else |
f431efe5 | 5063 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5064 | |
5065 | switch (bptype) | |
c906108c SS |
5066 | { |
5067 | case bp_none: | |
628fe4e4 | 5068 | break; |
c906108c SS |
5069 | case bp_breakpoint: |
5070 | case bp_hardware_breakpoint: | |
5071 | case bp_until: | |
5072 | case bp_finish: | |
a9b3a50f | 5073 | case bp_shlib_event: |
c906108c SS |
5074 | if (bs->stop) |
5075 | { | |
5076 | if (bs->print) | |
628fe4e4 | 5077 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5078 | else |
628fe4e4 | 5079 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5080 | } |
5081 | else | |
628fe4e4 | 5082 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5083 | break; |
5084 | case bp_watchpoint: | |
5085 | case bp_hardware_watchpoint: | |
5086 | case bp_read_watchpoint: | |
5087 | case bp_access_watchpoint: | |
5088 | if (bs->stop) | |
5089 | { | |
5090 | if (bs->print) | |
628fe4e4 | 5091 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5092 | else |
628fe4e4 | 5093 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5094 | } |
5095 | else | |
628fe4e4 JK |
5096 | { |
5097 | /* There was a watchpoint, but we're not stopping. | |
5098 | This requires no further action. */ | |
5099 | } | |
c906108c SS |
5100 | break; |
5101 | case bp_longjmp: | |
186c406b | 5102 | case bp_exception: |
628fe4e4 | 5103 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 5104 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
5105 | break; |
5106 | case bp_longjmp_resume: | |
186c406b | 5107 | case bp_exception_resume: |
628fe4e4 | 5108 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5109 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5110 | break; |
5111 | case bp_step_resume: | |
5112 | if (bs->stop) | |
628fe4e4 JK |
5113 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5114 | else | |
c906108c | 5115 | { |
628fe4e4 JK |
5116 | /* It is for the wrong frame. */ |
5117 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5118 | } |
c906108c | 5119 | break; |
2c03e5be PA |
5120 | case bp_hp_step_resume: |
5121 | if (bs->stop) | |
5122 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5123 | else | |
5124 | { | |
5125 | /* It is for the wrong frame. */ | |
5126 | this_action = BPSTAT_WHAT_SINGLE; | |
5127 | } | |
5128 | break; | |
c906108c | 5129 | case bp_watchpoint_scope: |
c4093a6a | 5130 | case bp_thread_event: |
1900040c | 5131 | case bp_overlay_event: |
0fd8e87f | 5132 | case bp_longjmp_master: |
aa7d318d | 5133 | case bp_std_terminate_master: |
186c406b | 5134 | case bp_exception_master: |
628fe4e4 | 5135 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5136 | break; |
ce78b96d | 5137 | case bp_catchpoint: |
c5aa993b JM |
5138 | if (bs->stop) |
5139 | { | |
5140 | if (bs->print) | |
628fe4e4 | 5141 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5142 | else |
628fe4e4 | 5143 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5144 | } |
5145 | else | |
628fe4e4 JK |
5146 | { |
5147 | /* There was a catchpoint, but we're not stopping. | |
5148 | This requires no further action. */ | |
5149 | } | |
5150 | break; | |
628fe4e4 JK |
5151 | case bp_jit_event: |
5152 | jit_event = 1; | |
5153 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5154 | break; |
c906108c | 5155 | case bp_call_dummy: |
53a5351d JM |
5156 | /* Make sure the action is stop (silent or noisy), |
5157 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5158 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5159 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5160 | break; |
5161 | case bp_std_terminate: | |
5162 | /* Make sure the action is stop (silent or noisy), | |
5163 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5164 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5165 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5166 | break; |
1042e4c0 | 5167 | case bp_tracepoint: |
7a697b8d | 5168 | case bp_fast_tracepoint: |
0fb4aa4b | 5169 | case bp_static_tracepoint: |
1042e4c0 SS |
5170 | /* Tracepoint hits should not be reported back to GDB, and |
5171 | if one got through somehow, it should have been filtered | |
5172 | out already. */ | |
5173 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5174 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5175 | break; |
5176 | case bp_gnu_ifunc_resolver: | |
5177 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5178 | this_action = BPSTAT_WHAT_SINGLE; | |
5179 | break; | |
5180 | case bp_gnu_ifunc_resolver_return: | |
5181 | /* The breakpoint will be removed, execution will restart from the | |
5182 | PC of the former breakpoint. */ | |
5183 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5184 | break; | |
e7e0cddf SS |
5185 | |
5186 | case bp_dprintf: | |
5187 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5188 | break; | |
5189 | ||
628fe4e4 JK |
5190 | default: |
5191 | internal_error (__FILE__, __LINE__, | |
5192 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5193 | } |
628fe4e4 JK |
5194 | |
5195 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5196 | } |
628fe4e4 | 5197 | |
0e30163f JK |
5198 | /* These operations may affect the bs->breakpoint_at state so they are |
5199 | delayed after MAIN_ACTION is decided above. */ | |
5200 | ||
628fe4e4 JK |
5201 | if (jit_event) |
5202 | { | |
5203 | if (debug_infrun) | |
5204 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5205 | ||
5206 | handle_jit_event (); | |
5207 | } | |
5208 | ||
0e30163f JK |
5209 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5210 | { | |
5211 | struct breakpoint *b = bs->breakpoint_at; | |
5212 | ||
5213 | if (b == NULL) | |
5214 | continue; | |
5215 | switch (b->type) | |
5216 | { | |
5217 | case bp_gnu_ifunc_resolver: | |
5218 | gnu_ifunc_resolver_stop (b); | |
5219 | break; | |
5220 | case bp_gnu_ifunc_resolver_return: | |
5221 | gnu_ifunc_resolver_return_stop (b); | |
5222 | break; | |
5223 | } | |
5224 | } | |
5225 | ||
c906108c SS |
5226 | return retval; |
5227 | } | |
5228 | ||
5229 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5230 | without hardware support). This isn't related to a specific bpstat, | |
5231 | just to things like whether watchpoints are set. */ | |
5232 | ||
c5aa993b | 5233 | int |
fba45db2 | 5234 | bpstat_should_step (void) |
c906108c SS |
5235 | { |
5236 | struct breakpoint *b; | |
cc59ec59 | 5237 | |
c906108c | 5238 | ALL_BREAKPOINTS (b) |
717a8278 | 5239 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5240 | return 1; |
c906108c SS |
5241 | return 0; |
5242 | } | |
5243 | ||
67822962 PA |
5244 | int |
5245 | bpstat_causes_stop (bpstat bs) | |
5246 | { | |
5247 | for (; bs != NULL; bs = bs->next) | |
5248 | if (bs->stop) | |
5249 | return 1; | |
5250 | ||
5251 | return 0; | |
5252 | } | |
5253 | ||
c906108c | 5254 | \f |
c5aa993b | 5255 | |
170b53b2 UW |
5256 | /* Compute a string of spaces suitable to indent the next line |
5257 | so it starts at the position corresponding to the table column | |
5258 | named COL_NAME in the currently active table of UIOUT. */ | |
5259 | ||
5260 | static char * | |
5261 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5262 | { | |
5263 | static char wrap_indent[80]; | |
5264 | int i, total_width, width, align; | |
5265 | char *text; | |
5266 | ||
5267 | total_width = 0; | |
5268 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5269 | { | |
5270 | if (strcmp (text, col_name) == 0) | |
5271 | { | |
5272 | gdb_assert (total_width < sizeof wrap_indent); | |
5273 | memset (wrap_indent, ' ', total_width); | |
5274 | wrap_indent[total_width] = 0; | |
5275 | ||
5276 | return wrap_indent; | |
5277 | } | |
5278 | ||
5279 | total_width += width + 1; | |
5280 | } | |
5281 | ||
5282 | return NULL; | |
5283 | } | |
5284 | ||
b775012e LM |
5285 | /* Determine if the locations of this breakpoint will have their conditions |
5286 | evaluated by the target, host or a mix of both. Returns the following: | |
5287 | ||
5288 | "host": Host evals condition. | |
5289 | "host or target": Host or Target evals condition. | |
5290 | "target": Target evals condition. | |
5291 | */ | |
5292 | ||
5293 | static const char * | |
5294 | bp_condition_evaluator (struct breakpoint *b) | |
5295 | { | |
5296 | struct bp_location *bl; | |
5297 | char host_evals = 0; | |
5298 | char target_evals = 0; | |
5299 | ||
5300 | if (!b) | |
5301 | return NULL; | |
5302 | ||
5303 | if (!is_breakpoint (b)) | |
5304 | return NULL; | |
5305 | ||
5306 | if (gdb_evaluates_breakpoint_condition_p () | |
5307 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5308 | return condition_evaluation_host; | |
5309 | ||
5310 | for (bl = b->loc; bl; bl = bl->next) | |
5311 | { | |
5312 | if (bl->cond_bytecode) | |
5313 | target_evals++; | |
5314 | else | |
5315 | host_evals++; | |
5316 | } | |
5317 | ||
5318 | if (host_evals && target_evals) | |
5319 | return condition_evaluation_both; | |
5320 | else if (target_evals) | |
5321 | return condition_evaluation_target; | |
5322 | else | |
5323 | return condition_evaluation_host; | |
5324 | } | |
5325 | ||
5326 | /* Determine the breakpoint location's condition evaluator. This is | |
5327 | similar to bp_condition_evaluator, but for locations. */ | |
5328 | ||
5329 | static const char * | |
5330 | bp_location_condition_evaluator (struct bp_location *bl) | |
5331 | { | |
5332 | if (bl && !is_breakpoint (bl->owner)) | |
5333 | return NULL; | |
5334 | ||
5335 | if (gdb_evaluates_breakpoint_condition_p () | |
5336 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5337 | return condition_evaluation_host; | |
5338 | ||
5339 | if (bl && bl->cond_bytecode) | |
5340 | return condition_evaluation_target; | |
5341 | else | |
5342 | return condition_evaluation_host; | |
5343 | } | |
5344 | ||
859825b8 JK |
5345 | /* Print the LOC location out of the list of B->LOC locations. */ |
5346 | ||
170b53b2 UW |
5347 | static void |
5348 | print_breakpoint_location (struct breakpoint *b, | |
5349 | struct bp_location *loc) | |
0d381245 | 5350 | { |
79a45e25 | 5351 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
5352 | struct cleanup *old_chain = save_current_program_space (); |
5353 | ||
859825b8 JK |
5354 | if (loc != NULL && loc->shlib_disabled) |
5355 | loc = NULL; | |
5356 | ||
6c95b8df PA |
5357 | if (loc != NULL) |
5358 | set_current_program_space (loc->pspace); | |
5359 | ||
56435ebe TT |
5360 | if (b->display_canonical) |
5361 | ui_out_field_string (uiout, "what", b->addr_string); | |
f8eba3c6 | 5362 | else if (loc && loc->source_file) |
0d381245 VP |
5363 | { |
5364 | struct symbol *sym | |
5365 | = find_pc_sect_function (loc->address, loc->section); | |
5366 | if (sym) | |
5367 | { | |
5368 | ui_out_text (uiout, "in "); | |
5369 | ui_out_field_string (uiout, "func", | |
5370 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
5371 | ui_out_text (uiout, " "); |
5372 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
5373 | ui_out_text (uiout, "at "); | |
0d381245 | 5374 | } |
f8eba3c6 | 5375 | ui_out_field_string (uiout, "file", loc->source_file); |
0d381245 VP |
5376 | ui_out_text (uiout, ":"); |
5377 | ||
5378 | if (ui_out_is_mi_like_p (uiout)) | |
5379 | { | |
5380 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
5381 | char *fullname = symtab_to_fullname (sal.symtab); | |
5382 | ||
5383 | if (fullname) | |
5384 | ui_out_field_string (uiout, "fullname", fullname); | |
5385 | } | |
5386 | ||
f8eba3c6 | 5387 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 5388 | } |
859825b8 | 5389 | else if (loc) |
0d381245 | 5390 | { |
f99d8bf4 PA |
5391 | struct ui_file *stb = mem_fileopen (); |
5392 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 5393 | |
f99d8bf4 | 5394 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 5395 | demangle, ""); |
0d381245 | 5396 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
5397 | |
5398 | do_cleanups (stb_chain); | |
0d381245 | 5399 | } |
859825b8 JK |
5400 | else |
5401 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 5402 | |
b775012e LM |
5403 | if (loc && is_breakpoint (b) |
5404 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5405 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5406 | { | |
5407 | ui_out_text (uiout, " ("); | |
5408 | ui_out_field_string (uiout, "evaluated-by", | |
5409 | bp_location_condition_evaluator (loc)); | |
5410 | ui_out_text (uiout, ")"); | |
5411 | } | |
5412 | ||
6c95b8df | 5413 | do_cleanups (old_chain); |
0d381245 VP |
5414 | } |
5415 | ||
269b11a2 PA |
5416 | static const char * |
5417 | bptype_string (enum bptype type) | |
c906108c | 5418 | { |
c4093a6a JM |
5419 | struct ep_type_description |
5420 | { | |
5421 | enum bptype type; | |
5422 | char *description; | |
5423 | }; | |
5424 | static struct ep_type_description bptypes[] = | |
c906108c | 5425 | { |
c5aa993b JM |
5426 | {bp_none, "?deleted?"}, |
5427 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5428 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
5429 | {bp_until, "until"}, |
5430 | {bp_finish, "finish"}, | |
5431 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5432 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5433 | {bp_read_watchpoint, "read watchpoint"}, |
5434 | {bp_access_watchpoint, "acc watchpoint"}, | |
5435 | {bp_longjmp, "longjmp"}, | |
5436 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
5437 | {bp_exception, "exception"}, |
5438 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5439 | {bp_step_resume, "step resume"}, |
2c03e5be | 5440 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5441 | {bp_watchpoint_scope, "watchpoint scope"}, |
5442 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5443 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5444 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5445 | {bp_thread_event, "thread events"}, |
1900040c | 5446 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5447 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5448 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5449 | {bp_exception_master, "exception master"}, |
ce78b96d | 5450 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5451 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5452 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5453 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5454 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5455 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5456 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5457 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5458 | }; |
269b11a2 PA |
5459 | |
5460 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5461 | || ((int) type != bptypes[(int) type].type)) | |
5462 | internal_error (__FILE__, __LINE__, | |
5463 | _("bptypes table does not describe type #%d."), | |
5464 | (int) type); | |
5465 | ||
5466 | return bptypes[(int) type].description; | |
5467 | } | |
5468 | ||
5469 | /* Print B to gdb_stdout. */ | |
5470 | ||
5471 | static void | |
5472 | print_one_breakpoint_location (struct breakpoint *b, | |
5473 | struct bp_location *loc, | |
5474 | int loc_number, | |
5475 | struct bp_location **last_loc, | |
269b11a2 PA |
5476 | int allflag) |
5477 | { | |
5478 | struct command_line *l; | |
c2c6d25f | 5479 | static char bpenables[] = "nynny"; |
c906108c | 5480 | |
79a45e25 | 5481 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5482 | int header_of_multiple = 0; |
5483 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5484 | struct value_print_options opts; |
5485 | ||
5486 | get_user_print_options (&opts); | |
0d381245 VP |
5487 | |
5488 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5489 | /* See comment in print_one_breakpoint concerning treatment of |
5490 | breakpoints with single disabled location. */ | |
0d381245 VP |
5491 | if (loc == NULL |
5492 | && (b->loc != NULL | |
5493 | && (b->loc->next != NULL || !b->loc->enabled))) | |
5494 | header_of_multiple = 1; | |
5495 | if (loc == NULL) | |
5496 | loc = b->loc; | |
5497 | ||
c4093a6a JM |
5498 | annotate_record (); |
5499 | ||
5500 | /* 1 */ | |
5501 | annotate_field (0); | |
0d381245 VP |
5502 | if (part_of_multiple) |
5503 | { | |
5504 | char *formatted; | |
0c6773c1 | 5505 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
5506 | ui_out_field_string (uiout, "number", formatted); |
5507 | xfree (formatted); | |
5508 | } | |
5509 | else | |
5510 | { | |
5511 | ui_out_field_int (uiout, "number", b->number); | |
5512 | } | |
c4093a6a JM |
5513 | |
5514 | /* 2 */ | |
5515 | annotate_field (1); | |
0d381245 VP |
5516 | if (part_of_multiple) |
5517 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
5518 | else |
5519 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
5520 | |
5521 | /* 3 */ | |
5522 | annotate_field (2); | |
0d381245 VP |
5523 | if (part_of_multiple) |
5524 | ui_out_field_skip (uiout, "disp"); | |
5525 | else | |
2cec12e5 | 5526 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 5527 | |
c4093a6a JM |
5528 | |
5529 | /* 4 */ | |
5530 | annotate_field (3); | |
0d381245 | 5531 | if (part_of_multiple) |
54e52265 | 5532 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 5533 | else |
4a64f543 MS |
5534 | ui_out_field_fmt (uiout, "enabled", "%c", |
5535 | bpenables[(int) b->enable_state]); | |
54e52265 | 5536 | ui_out_spaces (uiout, 2); |
0d381245 | 5537 | |
c4093a6a JM |
5538 | |
5539 | /* 5 and 6 */ | |
3086aeae | 5540 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 5541 | { |
4a64f543 MS |
5542 | /* Although the print_one can possibly print all locations, |
5543 | calling it here is not likely to get any nice result. So, | |
5544 | make sure there's just one location. */ | |
0d381245 | 5545 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 5546 | b->ops->print_one (b, last_loc); |
0d381245 | 5547 | } |
3086aeae DJ |
5548 | else |
5549 | switch (b->type) | |
5550 | { | |
5551 | case bp_none: | |
5552 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 5553 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 5554 | break; |
c906108c | 5555 | |
3086aeae DJ |
5556 | case bp_watchpoint: |
5557 | case bp_hardware_watchpoint: | |
5558 | case bp_read_watchpoint: | |
5559 | case bp_access_watchpoint: | |
3a5c3e22 PA |
5560 | { |
5561 | struct watchpoint *w = (struct watchpoint *) b; | |
5562 | ||
5563 | /* Field 4, the address, is omitted (which makes the columns | |
5564 | not line up too nicely with the headers, but the effect | |
5565 | is relatively readable). */ | |
5566 | if (opts.addressprint) | |
5567 | ui_out_field_skip (uiout, "addr"); | |
5568 | annotate_field (5); | |
5569 | ui_out_field_string (uiout, "what", w->exp_string); | |
5570 | } | |
3086aeae DJ |
5571 | break; |
5572 | ||
3086aeae DJ |
5573 | case bp_breakpoint: |
5574 | case bp_hardware_breakpoint: | |
5575 | case bp_until: | |
5576 | case bp_finish: | |
5577 | case bp_longjmp: | |
5578 | case bp_longjmp_resume: | |
186c406b TT |
5579 | case bp_exception: |
5580 | case bp_exception_resume: | |
3086aeae | 5581 | case bp_step_resume: |
2c03e5be | 5582 | case bp_hp_step_resume: |
3086aeae DJ |
5583 | case bp_watchpoint_scope: |
5584 | case bp_call_dummy: | |
aa7d318d | 5585 | case bp_std_terminate: |
3086aeae DJ |
5586 | case bp_shlib_event: |
5587 | case bp_thread_event: | |
5588 | case bp_overlay_event: | |
0fd8e87f | 5589 | case bp_longjmp_master: |
aa7d318d | 5590 | case bp_std_terminate_master: |
186c406b | 5591 | case bp_exception_master: |
1042e4c0 | 5592 | case bp_tracepoint: |
7a697b8d | 5593 | case bp_fast_tracepoint: |
0fb4aa4b | 5594 | case bp_static_tracepoint: |
e7e0cddf | 5595 | case bp_dprintf: |
4efc6507 | 5596 | case bp_jit_event: |
0e30163f JK |
5597 | case bp_gnu_ifunc_resolver: |
5598 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 5599 | if (opts.addressprint) |
3086aeae DJ |
5600 | { |
5601 | annotate_field (4); | |
54e52265 | 5602 | if (header_of_multiple) |
0d381245 | 5603 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 5604 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 5605 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 5606 | else |
5af949e3 UW |
5607 | ui_out_field_core_addr (uiout, "addr", |
5608 | loc->gdbarch, loc->address); | |
3086aeae DJ |
5609 | } |
5610 | annotate_field (5); | |
0d381245 | 5611 | if (!header_of_multiple) |
170b53b2 | 5612 | print_breakpoint_location (b, loc); |
0d381245 | 5613 | if (b->loc) |
a6d9a66e | 5614 | *last_loc = b->loc; |
3086aeae DJ |
5615 | break; |
5616 | } | |
c906108c | 5617 | |
6c95b8df PA |
5618 | |
5619 | /* For backward compatibility, don't display inferiors unless there | |
5620 | are several. */ | |
5621 | if (loc != NULL | |
5622 | && !header_of_multiple | |
5623 | && (allflag | |
5624 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
5625 | && (number_of_program_spaces () > 1 | |
5626 | || number_of_inferiors () > 1) | |
4a64f543 MS |
5627 | /* LOC is for existing B, it cannot be in |
5628 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
5629 | && loc->owner->type != bp_catchpoint))) |
5630 | { | |
5631 | struct inferior *inf; | |
5632 | int first = 1; | |
5633 | ||
5634 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
5635 | { | |
5636 | if (inf->pspace == loc->pspace) | |
5637 | { | |
5638 | if (first) | |
5639 | { | |
5640 | first = 0; | |
5641 | ui_out_text (uiout, " inf "); | |
5642 | } | |
5643 | else | |
5644 | ui_out_text (uiout, ", "); | |
5645 | ui_out_text (uiout, plongest (inf->num)); | |
5646 | } | |
5647 | } | |
5648 | } | |
5649 | ||
4a306c9a | 5650 | if (!part_of_multiple) |
c4093a6a | 5651 | { |
4a306c9a JB |
5652 | if (b->thread != -1) |
5653 | { | |
5654 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 5655 | "stop only in" line a little further down. */ |
4a306c9a JB |
5656 | ui_out_text (uiout, " thread "); |
5657 | ui_out_field_int (uiout, "thread", b->thread); | |
5658 | } | |
5659 | else if (b->task != 0) | |
5660 | { | |
5661 | ui_out_text (uiout, " task "); | |
5662 | ui_out_field_int (uiout, "task", b->task); | |
5663 | } | |
c4093a6a | 5664 | } |
f1310107 | 5665 | |
8b93c638 | 5666 | ui_out_text (uiout, "\n"); |
f1310107 | 5667 | |
348d480f | 5668 | if (!part_of_multiple) |
f1310107 TJB |
5669 | b->ops->print_one_detail (b, uiout); |
5670 | ||
0d381245 | 5671 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
5672 | { |
5673 | annotate_field (6); | |
8b93c638 | 5674 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 5675 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 5676 | the frame ID. */ |
5af949e3 UW |
5677 | ui_out_field_core_addr (uiout, "frame", |
5678 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 5679 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
5680 | } |
5681 | ||
28010a5d | 5682 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
5683 | { |
5684 | annotate_field (7); | |
d77f58be | 5685 | if (is_tracepoint (b)) |
1042e4c0 SS |
5686 | ui_out_text (uiout, "\ttrace only if "); |
5687 | else | |
5688 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 5689 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
5690 | |
5691 | /* Print whether the target is doing the breakpoint's condition | |
5692 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
5693 | if (is_breakpoint (b) | |
5694 | && breakpoint_condition_evaluation_mode () | |
5695 | == condition_evaluation_target) | |
5696 | { | |
5697 | ui_out_text (uiout, " ("); | |
5698 | ui_out_field_string (uiout, "evaluated-by", | |
5699 | bp_condition_evaluator (b)); | |
5700 | ui_out_text (uiout, " evals)"); | |
5701 | } | |
0101ce28 JJ |
5702 | ui_out_text (uiout, "\n"); |
5703 | } | |
5704 | ||
0d381245 | 5705 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 5706 | { |
4a64f543 | 5707 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
5708 | ui_out_text (uiout, "\tstop only in thread "); |
5709 | ui_out_field_int (uiout, "thread", b->thread); | |
5710 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
5711 | } |
5712 | ||
63c715c6 | 5713 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 5714 | { |
4a64f543 | 5715 | /* FIXME should make an annotation for this. */ |
c326b90e | 5716 | if (is_catchpoint (b)) |
8b93c638 | 5717 | ui_out_text (uiout, "\tcatchpoint"); |
f196051f SS |
5718 | else if (is_tracepoint (b)) |
5719 | ui_out_text (uiout, "\ttracepoint"); | |
8b93c638 JM |
5720 | else |
5721 | ui_out_text (uiout, "\tbreakpoint"); | |
5722 | ui_out_text (uiout, " already hit "); | |
5723 | ui_out_field_int (uiout, "times", b->hit_count); | |
5724 | if (b->hit_count == 1) | |
5725 | ui_out_text (uiout, " time\n"); | |
5726 | else | |
5727 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
5728 | } |
5729 | ||
4a64f543 MS |
5730 | /* Output the count also if it is zero, but only if this is mi. |
5731 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 5732 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 5733 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 5734 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 5735 | |
0d381245 | 5736 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
5737 | { |
5738 | annotate_field (8); | |
8b93c638 JM |
5739 | ui_out_text (uiout, "\tignore next "); |
5740 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
5741 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 5742 | } |
059fb39f | 5743 | |
816338b5 SS |
5744 | /* Note that an enable count of 1 corresponds to "enable once" |
5745 | behavior, which is reported by the combination of enablement and | |
5746 | disposition, so we don't need to mention it here. */ | |
5747 | if (!part_of_multiple && b->enable_count > 1) | |
5748 | { | |
5749 | annotate_field (8); | |
5750 | ui_out_text (uiout, "\tdisable after "); | |
5751 | /* Tweak the wording to clarify that ignore and enable counts | |
5752 | are distinct, and have additive effect. */ | |
5753 | if (b->ignore_count) | |
5754 | ui_out_text (uiout, "additional "); | |
5755 | else | |
5756 | ui_out_text (uiout, "next "); | |
5757 | ui_out_field_int (uiout, "enable", b->enable_count); | |
5758 | ui_out_text (uiout, " hits\n"); | |
5759 | } | |
5760 | ||
f196051f SS |
5761 | if (!part_of_multiple && is_tracepoint (b)) |
5762 | { | |
5763 | struct tracepoint *tp = (struct tracepoint *) b; | |
5764 | ||
5765 | if (tp->traceframe_usage) | |
5766 | { | |
5767 | ui_out_text (uiout, "\ttrace buffer usage "); | |
5768 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
5769 | ui_out_text (uiout, " bytes\n"); | |
5770 | } | |
5771 | } | |
5772 | ||
9add0f1b | 5773 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 5774 | if (!part_of_multiple && l) |
c4093a6a | 5775 | { |
3b31d625 EZ |
5776 | struct cleanup *script_chain; |
5777 | ||
c4093a6a | 5778 | annotate_field (9); |
3b31d625 | 5779 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 5780 | print_command_lines (uiout, l, 4); |
3b31d625 | 5781 | do_cleanups (script_chain); |
c4093a6a | 5782 | } |
d24317b4 | 5783 | |
d9b3f62e | 5784 | if (is_tracepoint (b)) |
1042e4c0 | 5785 | { |
d9b3f62e PA |
5786 | struct tracepoint *t = (struct tracepoint *) b; |
5787 | ||
5788 | if (!part_of_multiple && t->pass_count) | |
5789 | { | |
5790 | annotate_field (10); | |
5791 | ui_out_text (uiout, "\tpass count "); | |
5792 | ui_out_field_int (uiout, "pass", t->pass_count); | |
5793 | ui_out_text (uiout, " \n"); | |
5794 | } | |
1042e4c0 SS |
5795 | } |
5796 | ||
d24317b4 VP |
5797 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
5798 | { | |
3a5c3e22 PA |
5799 | if (is_watchpoint (b)) |
5800 | { | |
5801 | struct watchpoint *w = (struct watchpoint *) b; | |
5802 | ||
5803 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
5804 | } | |
5805 | else if (b->addr_string) | |
d24317b4 | 5806 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 5807 | } |
c4093a6a | 5808 | } |
c5aa993b | 5809 | |
0d381245 VP |
5810 | static void |
5811 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 5812 | struct bp_location **last_loc, |
6c95b8df | 5813 | int allflag) |
0d381245 | 5814 | { |
8d3788bd | 5815 | struct cleanup *bkpt_chain; |
79a45e25 | 5816 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
5817 | |
5818 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
5819 | ||
12c5a436 | 5820 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 5821 | do_cleanups (bkpt_chain); |
0d381245 VP |
5822 | |
5823 | /* If this breakpoint has custom print function, | |
5824 | it's already printed. Otherwise, print individual | |
5825 | locations, if any. */ | |
5826 | if (b->ops == NULL || b->ops->print_one == NULL) | |
5827 | { | |
4a64f543 MS |
5828 | /* If breakpoint has a single location that is disabled, we |
5829 | print it as if it had several locations, since otherwise it's | |
5830 | hard to represent "breakpoint enabled, location disabled" | |
5831 | situation. | |
5832 | ||
5833 | Note that while hardware watchpoints have several locations | |
a3be7890 | 5834 | internally, that's not a property exposed to user. */ |
0d381245 | 5835 | if (b->loc |
a5606eee | 5836 | && !is_hardware_watchpoint (b) |
8d3788bd | 5837 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
5838 | { |
5839 | struct bp_location *loc; | |
5840 | int n = 1; | |
8d3788bd | 5841 | |
0d381245 | 5842 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
5843 | { |
5844 | struct cleanup *inner2 = | |
5845 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
5846 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
5847 | do_cleanups (inner2); | |
5848 | } | |
0d381245 VP |
5849 | } |
5850 | } | |
5851 | } | |
5852 | ||
a6d9a66e UW |
5853 | static int |
5854 | breakpoint_address_bits (struct breakpoint *b) | |
5855 | { | |
5856 | int print_address_bits = 0; | |
5857 | struct bp_location *loc; | |
5858 | ||
5859 | for (loc = b->loc; loc; loc = loc->next) | |
5860 | { | |
c7437ca6 PA |
5861 | int addr_bit; |
5862 | ||
5863 | /* Software watchpoints that aren't watching memory don't have | |
5864 | an address to print. */ | |
5865 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
5866 | continue; | |
5867 | ||
5868 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
5869 | if (addr_bit > print_address_bits) |
5870 | print_address_bits = addr_bit; | |
5871 | } | |
5872 | ||
5873 | return print_address_bits; | |
5874 | } | |
0d381245 | 5875 | |
c4093a6a JM |
5876 | struct captured_breakpoint_query_args |
5877 | { | |
5878 | int bnum; | |
5879 | }; | |
c5aa993b | 5880 | |
c4093a6a | 5881 | static int |
2b65245e | 5882 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
5883 | { |
5884 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 5885 | struct breakpoint *b; |
a6d9a66e | 5886 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 5887 | |
c4093a6a JM |
5888 | ALL_BREAKPOINTS (b) |
5889 | { | |
5890 | if (args->bnum == b->number) | |
c5aa993b | 5891 | { |
12c5a436 | 5892 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 5893 | return GDB_RC_OK; |
c5aa993b | 5894 | } |
c4093a6a JM |
5895 | } |
5896 | return GDB_RC_NONE; | |
5897 | } | |
c5aa993b | 5898 | |
c4093a6a | 5899 | enum gdb_rc |
4a64f543 MS |
5900 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5901 | char **error_message) | |
c4093a6a JM |
5902 | { |
5903 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5904 | |
c4093a6a JM |
5905 | args.bnum = bnum; |
5906 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5907 | an error. */ |
b0b13bb4 DJ |
5908 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5909 | error_message, RETURN_MASK_ALL) < 0) | |
5910 | return GDB_RC_FAIL; | |
5911 | else | |
5912 | return GDB_RC_OK; | |
c4093a6a | 5913 | } |
c5aa993b | 5914 | |
09d682a4 TT |
5915 | /* Return true if this breakpoint was set by the user, false if it is |
5916 | internal or momentary. */ | |
5917 | ||
5918 | int | |
5919 | user_breakpoint_p (struct breakpoint *b) | |
5920 | { | |
46c6471b | 5921 | return b->number > 0; |
09d682a4 TT |
5922 | } |
5923 | ||
7f3b0473 | 5924 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5925 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5926 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5927 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5928 | ones for which it returns non-zero. Return the total number of | |
5929 | breakpoints listed. */ | |
c906108c | 5930 | |
d77f58be | 5931 | static int |
e5a67952 | 5932 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5933 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5934 | { |
52f0bd74 | 5935 | struct breakpoint *b; |
a6d9a66e | 5936 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5937 | int nr_printable_breakpoints; |
3b31d625 | 5938 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5939 | struct value_print_options opts; |
a6d9a66e | 5940 | int print_address_bits = 0; |
269b11a2 | 5941 | int print_type_col_width = 14; |
79a45e25 | 5942 | struct ui_out *uiout = current_uiout; |
269b11a2 | 5943 | |
79a45b7d TT |
5944 | get_user_print_options (&opts); |
5945 | ||
4a64f543 MS |
5946 | /* Compute the number of rows in the table, as well as the size |
5947 | required for address fields. */ | |
7f3b0473 AC |
5948 | nr_printable_breakpoints = 0; |
5949 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
5950 | { |
5951 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5952 | if (filter && !filter (b)) | |
5953 | continue; | |
5954 | ||
5955 | /* If we have an "args" string, it is a list of breakpoints to | |
5956 | accept. Skip the others. */ | |
5957 | if (args != NULL && *args != '\0') | |
5958 | { | |
5959 | if (allflag && parse_and_eval_long (args) != b->number) | |
5960 | continue; | |
5961 | if (!allflag && !number_is_in_list (args, b->number)) | |
5962 | continue; | |
5963 | } | |
269b11a2 | 5964 | |
e5a67952 MS |
5965 | if (allflag || user_breakpoint_p (b)) |
5966 | { | |
5967 | int addr_bit, type_len; | |
a6d9a66e | 5968 | |
e5a67952 MS |
5969 | addr_bit = breakpoint_address_bits (b); |
5970 | if (addr_bit > print_address_bits) | |
5971 | print_address_bits = addr_bit; | |
269b11a2 | 5972 | |
e5a67952 MS |
5973 | type_len = strlen (bptype_string (b->type)); |
5974 | if (type_len > print_type_col_width) | |
5975 | print_type_col_width = type_len; | |
5976 | ||
5977 | nr_printable_breakpoints++; | |
5978 | } | |
5979 | } | |
7f3b0473 | 5980 | |
79a45b7d | 5981 | if (opts.addressprint) |
3b31d625 | 5982 | bkpttbl_chain |
3e43a32a MS |
5983 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5984 | nr_printable_breakpoints, | |
3b31d625 | 5985 | "BreakpointTable"); |
8b93c638 | 5986 | else |
3b31d625 | 5987 | bkpttbl_chain |
3e43a32a MS |
5988 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5989 | nr_printable_breakpoints, | |
3b31d625 | 5990 | "BreakpointTable"); |
8b93c638 | 5991 | |
7f3b0473 | 5992 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5993 | annotate_breakpoints_headers (); |
5994 | if (nr_printable_breakpoints > 0) | |
5995 | annotate_field (0); | |
4a64f543 | 5996 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5997 | if (nr_printable_breakpoints > 0) |
5998 | annotate_field (1); | |
269b11a2 | 5999 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6000 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6001 | if (nr_printable_breakpoints > 0) |
6002 | annotate_field (2); | |
4a64f543 | 6003 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6004 | if (nr_printable_breakpoints > 0) |
6005 | annotate_field (3); | |
54e52265 | 6006 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6007 | if (opts.addressprint) |
e5a67952 MS |
6008 | { |
6009 | if (nr_printable_breakpoints > 0) | |
6010 | annotate_field (4); | |
6011 | if (print_address_bits <= 32) | |
6012 | ui_out_table_header (uiout, 10, ui_left, | |
6013 | "addr", "Address"); /* 5 */ | |
6014 | else | |
6015 | ui_out_table_header (uiout, 18, ui_left, | |
6016 | "addr", "Address"); /* 5 */ | |
6017 | } | |
d7faa9e7 AC |
6018 | if (nr_printable_breakpoints > 0) |
6019 | annotate_field (5); | |
6020 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6021 | ui_out_table_body (uiout); | |
6022 | if (nr_printable_breakpoints > 0) | |
6023 | annotate_breakpoints_table (); | |
7f3b0473 | 6024 | |
c4093a6a | 6025 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6026 | { |
6027 | QUIT; | |
6028 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6029 | if (filter && !filter (b)) | |
6030 | continue; | |
6031 | ||
6032 | /* If we have an "args" string, it is a list of breakpoints to | |
6033 | accept. Skip the others. */ | |
6034 | ||
6035 | if (args != NULL && *args != '\0') | |
6036 | { | |
6037 | if (allflag) /* maintenance info breakpoint */ | |
6038 | { | |
6039 | if (parse_and_eval_long (args) != b->number) | |
6040 | continue; | |
6041 | } | |
6042 | else /* all others */ | |
6043 | { | |
6044 | if (!number_is_in_list (args, b->number)) | |
6045 | continue; | |
6046 | } | |
6047 | } | |
6048 | /* We only print out user settable breakpoints unless the | |
6049 | allflag is set. */ | |
6050 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6051 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6052 | } |
6053 | ||
3b31d625 | 6054 | do_cleanups (bkpttbl_chain); |
698384cd | 6055 | |
7f3b0473 | 6056 | if (nr_printable_breakpoints == 0) |
c906108c | 6057 | { |
4a64f543 MS |
6058 | /* If there's a filter, let the caller decide how to report |
6059 | empty list. */ | |
d77f58be SS |
6060 | if (!filter) |
6061 | { | |
e5a67952 | 6062 | if (args == NULL || *args == '\0') |
d77f58be SS |
6063 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6064 | else | |
4a64f543 | 6065 | ui_out_message (uiout, 0, |
e5a67952 MS |
6066 | "No breakpoint or watchpoint matching '%s'.\n", |
6067 | args); | |
d77f58be | 6068 | } |
c906108c SS |
6069 | } |
6070 | else | |
c4093a6a | 6071 | { |
a6d9a66e UW |
6072 | if (last_loc && !server_command) |
6073 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6074 | } |
c906108c | 6075 | |
4a64f543 | 6076 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6077 | there have been breakpoints? */ |
c906108c | 6078 | annotate_breakpoints_table_end (); |
d77f58be SS |
6079 | |
6080 | return nr_printable_breakpoints; | |
c906108c SS |
6081 | } |
6082 | ||
ad443146 SS |
6083 | /* Display the value of default-collect in a way that is generally |
6084 | compatible with the breakpoint list. */ | |
6085 | ||
6086 | static void | |
6087 | default_collect_info (void) | |
6088 | { | |
79a45e25 PA |
6089 | struct ui_out *uiout = current_uiout; |
6090 | ||
ad443146 SS |
6091 | /* If it has no value (which is frequently the case), say nothing; a |
6092 | message like "No default-collect." gets in user's face when it's | |
6093 | not wanted. */ | |
6094 | if (!*default_collect) | |
6095 | return; | |
6096 | ||
6097 | /* The following phrase lines up nicely with per-tracepoint collect | |
6098 | actions. */ | |
6099 | ui_out_text (uiout, "default collect "); | |
6100 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6101 | ui_out_text (uiout, " \n"); | |
6102 | } | |
6103 | ||
c906108c | 6104 | static void |
e5a67952 | 6105 | breakpoints_info (char *args, int from_tty) |
c906108c | 6106 | { |
e5a67952 | 6107 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6108 | |
6109 | default_collect_info (); | |
d77f58be SS |
6110 | } |
6111 | ||
6112 | static void | |
e5a67952 | 6113 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6114 | { |
e5a67952 | 6115 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6116 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6117 | |
6118 | if (num_printed == 0) | |
6119 | { | |
e5a67952 | 6120 | if (args == NULL || *args == '\0') |
d77f58be SS |
6121 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6122 | else | |
e5a67952 | 6123 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6124 | } |
c906108c SS |
6125 | } |
6126 | ||
7a292a7a | 6127 | static void |
e5a67952 | 6128 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6129 | { |
e5a67952 | 6130 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6131 | |
6132 | default_collect_info (); | |
c906108c SS |
6133 | } |
6134 | ||
0d381245 | 6135 | static int |
714835d5 | 6136 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6137 | struct program_space *pspace, |
714835d5 | 6138 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6139 | { |
6140 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6141 | |
0d381245 VP |
6142 | for (; bl; bl = bl->next) |
6143 | { | |
6c95b8df PA |
6144 | if (bl->pspace == pspace |
6145 | && bl->address == pc | |
0d381245 VP |
6146 | && (!overlay_debugging || bl->section == section)) |
6147 | return 1; | |
6148 | } | |
6149 | return 0; | |
6150 | } | |
6151 | ||
672f9b60 | 6152 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6153 | concerns with logical breakpoints, so we match program spaces, not |
6154 | address spaces. */ | |
c906108c SS |
6155 | |
6156 | static void | |
6c95b8df PA |
6157 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6158 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6159 | struct obj_section *section, int thread) |
c906108c | 6160 | { |
52f0bd74 AC |
6161 | int others = 0; |
6162 | struct breakpoint *b; | |
c906108c SS |
6163 | |
6164 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6165 | others += (user_breakpoint_p (b) |
6166 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6167 | if (others > 0) |
6168 | { | |
a3f17187 AC |
6169 | if (others == 1) |
6170 | printf_filtered (_("Note: breakpoint ")); | |
6171 | else /* if (others == ???) */ | |
6172 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6173 | ALL_BREAKPOINTS (b) |
672f9b60 | 6174 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6175 | { |
6176 | others--; | |
6177 | printf_filtered ("%d", b->number); | |
6178 | if (b->thread == -1 && thread != -1) | |
6179 | printf_filtered (" (all threads)"); | |
6180 | else if (b->thread != -1) | |
6181 | printf_filtered (" (thread %d)", b->thread); | |
6182 | printf_filtered ("%s%s ", | |
059fb39f | 6183 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6184 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6185 | ? " (disabled)" |
6186 | : b->enable_state == bp_permanent | |
6187 | ? " (permanent)" | |
6188 | : ""), | |
6189 | (others > 1) ? "," | |
6190 | : ((others == 1) ? " and" : "")); | |
6191 | } | |
a3f17187 | 6192 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6193 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6194 | printf_filtered (".\n"); |
6195 | } | |
6196 | } | |
6197 | \f | |
c906108c | 6198 | |
e4f237da KB |
6199 | /* Return true iff it is meaningful to use the address member of |
6200 | BPT. For some breakpoint types, the address member is irrelevant | |
6201 | and it makes no sense to attempt to compare it to other addresses | |
6202 | (or use it for any other purpose either). | |
6203 | ||
4a64f543 MS |
6204 | More specifically, each of the following breakpoint types will |
6205 | always have a zero valued address and we don't want to mark | |
6206 | breakpoints of any of these types to be a duplicate of an actual | |
6207 | breakpoint at address zero: | |
e4f237da KB |
6208 | |
6209 | bp_watchpoint | |
2d134ed3 PA |
6210 | bp_catchpoint |
6211 | ||
6212 | */ | |
e4f237da KB |
6213 | |
6214 | static int | |
6215 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6216 | { | |
6217 | enum bptype type = bpt->type; | |
6218 | ||
2d134ed3 PA |
6219 | return (type != bp_watchpoint && type != bp_catchpoint); |
6220 | } | |
6221 | ||
6222 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6223 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6224 | ||
6225 | static int | |
4a64f543 MS |
6226 | watchpoint_locations_match (struct bp_location *loc1, |
6227 | struct bp_location *loc2) | |
2d134ed3 | 6228 | { |
3a5c3e22 PA |
6229 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6230 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6231 | ||
6232 | /* Both of them must exist. */ | |
6233 | gdb_assert (w1 != NULL); | |
6234 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6235 | |
4a64f543 MS |
6236 | /* If the target can evaluate the condition expression in hardware, |
6237 | then we we need to insert both watchpoints even if they are at | |
6238 | the same place. Otherwise the watchpoint will only trigger when | |
6239 | the condition of whichever watchpoint was inserted evaluates to | |
6240 | true, not giving a chance for GDB to check the condition of the | |
6241 | other watchpoint. */ | |
3a5c3e22 | 6242 | if ((w1->cond_exp |
4a64f543 MS |
6243 | && target_can_accel_watchpoint_condition (loc1->address, |
6244 | loc1->length, | |
0cf6dd15 | 6245 | loc1->watchpoint_type, |
3a5c3e22 PA |
6246 | w1->cond_exp)) |
6247 | || (w2->cond_exp | |
4a64f543 MS |
6248 | && target_can_accel_watchpoint_condition (loc2->address, |
6249 | loc2->length, | |
0cf6dd15 | 6250 | loc2->watchpoint_type, |
3a5c3e22 | 6251 | w2->cond_exp))) |
0cf6dd15 TJB |
6252 | return 0; |
6253 | ||
85d721b8 PA |
6254 | /* Note that this checks the owner's type, not the location's. In |
6255 | case the target does not support read watchpoints, but does | |
6256 | support access watchpoints, we'll have bp_read_watchpoint | |
6257 | watchpoints with hw_access locations. Those should be considered | |
6258 | duplicates of hw_read locations. The hw_read locations will | |
6259 | become hw_access locations later. */ | |
2d134ed3 PA |
6260 | return (loc1->owner->type == loc2->owner->type |
6261 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6262 | && loc1->address == loc2->address | |
6263 | && loc1->length == loc2->length); | |
e4f237da KB |
6264 | } |
6265 | ||
6c95b8df PA |
6266 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
6267 | same breakpoint location. In most targets, this can only be true | |
6268 | if ASPACE1 matches ASPACE2. On targets that have global | |
6269 | breakpoints, the address space doesn't really matter. */ | |
6270 | ||
6271 | static int | |
6272 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
6273 | struct address_space *aspace2, CORE_ADDR addr2) | |
6274 | { | |
6275 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
6276 | || aspace1 == aspace2) | |
6277 | && addr1 == addr2); | |
6278 | } | |
6279 | ||
f1310107 TJB |
6280 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6281 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6282 | matches ASPACE2. On targets that have global breakpoints, the address | |
6283 | space doesn't really matter. */ | |
6284 | ||
6285 | static int | |
6286 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6287 | int len1, struct address_space *aspace2, | |
6288 | CORE_ADDR addr2) | |
6289 | { | |
6290 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
6291 | || aspace1 == aspace2) | |
6292 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6293 | } | |
6294 | ||
6295 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6296 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6297 | matches the breakpoint's address space. On targets that have global | |
6298 | breakpoints, the address space doesn't really matter. */ | |
6299 | ||
6300 | static int | |
6301 | breakpoint_location_address_match (struct bp_location *bl, | |
6302 | struct address_space *aspace, | |
6303 | CORE_ADDR addr) | |
6304 | { | |
6305 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6306 | aspace, addr) | |
6307 | || (bl->length | |
6308 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6309 | bl->address, bl->length, | |
6310 | aspace, addr))); | |
6311 | } | |
6312 | ||
1e4d1764 YQ |
6313 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6314 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6315 | true, otherwise returns false. */ | |
6316 | ||
6317 | static int | |
6318 | tracepoint_locations_match (struct bp_location *loc1, | |
6319 | struct bp_location *loc2) | |
6320 | { | |
6321 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6322 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6323 | locations at the same address of different tracepoints are regarded as | |
6324 | different locations. */ | |
6325 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6326 | else | |
6327 | return 0; | |
6328 | } | |
6329 | ||
2d134ed3 PA |
6330 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6331 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6332 | represent the same location. */ | |
6333 | ||
6334 | static int | |
4a64f543 MS |
6335 | breakpoint_locations_match (struct bp_location *loc1, |
6336 | struct bp_location *loc2) | |
2d134ed3 | 6337 | { |
2bdf28a0 JK |
6338 | int hw_point1, hw_point2; |
6339 | ||
6340 | /* Both of them must not be in moribund_locations. */ | |
6341 | gdb_assert (loc1->owner != NULL); | |
6342 | gdb_assert (loc2->owner != NULL); | |
6343 | ||
6344 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6345 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6346 | |
6347 | if (hw_point1 != hw_point2) | |
6348 | return 0; | |
6349 | else if (hw_point1) | |
6350 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6351 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6352 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6353 | else |
f1310107 TJB |
6354 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6355 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6356 | loc2->pspace->aspace, loc2->address) | |
6357 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6358 | } |
6359 | ||
76897487 KB |
6360 | static void |
6361 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6362 | int bnum, int have_bnum) | |
6363 | { | |
f63fbe86 MS |
6364 | /* The longest string possibly returned by hex_string_custom |
6365 | is 50 chars. These must be at least that big for safety. */ | |
6366 | char astr1[64]; | |
6367 | char astr2[64]; | |
76897487 | 6368 | |
bb599908 PH |
6369 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6370 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6371 | if (have_bnum) |
8a3fe4f8 | 6372 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6373 | bnum, astr1, astr2); |
6374 | else | |
8a3fe4f8 | 6375 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6376 | } |
6377 | ||
4a64f543 MS |
6378 | /* Adjust a breakpoint's address to account for architectural |
6379 | constraints on breakpoint placement. Return the adjusted address. | |
6380 | Note: Very few targets require this kind of adjustment. For most | |
6381 | targets, this function is simply the identity function. */ | |
76897487 KB |
6382 | |
6383 | static CORE_ADDR | |
a6d9a66e UW |
6384 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6385 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6386 | { |
a6d9a66e | 6387 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6388 | { |
6389 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6390 | return bpaddr; | |
6391 | } | |
88f7da05 KB |
6392 | else if (bptype == bp_watchpoint |
6393 | || bptype == bp_hardware_watchpoint | |
6394 | || bptype == bp_read_watchpoint | |
6395 | || bptype == bp_access_watchpoint | |
fe798b75 | 6396 | || bptype == bp_catchpoint) |
88f7da05 KB |
6397 | { |
6398 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6399 | have their addresses modified. */ | |
6400 | return bpaddr; | |
6401 | } | |
76897487 KB |
6402 | else |
6403 | { | |
6404 | CORE_ADDR adjusted_bpaddr; | |
6405 | ||
6406 | /* Some targets have architectural constraints on the placement | |
6407 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 6408 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
6409 | |
6410 | /* An adjusted breakpoint address can significantly alter | |
6411 | a user's expectations. Print a warning if an adjustment | |
6412 | is required. */ | |
6413 | if (adjusted_bpaddr != bpaddr) | |
6414 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6415 | ||
6416 | return adjusted_bpaddr; | |
6417 | } | |
6418 | } | |
6419 | ||
28010a5d PA |
6420 | void |
6421 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
6422 | struct breakpoint *owner) | |
7cc221ef | 6423 | { |
7cc221ef DJ |
6424 | memset (loc, 0, sizeof (*loc)); |
6425 | ||
348d480f PA |
6426 | gdb_assert (ops != NULL); |
6427 | ||
28010a5d PA |
6428 | loc->ops = ops; |
6429 | loc->owner = owner; | |
511a6cd4 | 6430 | loc->cond = NULL; |
b775012e | 6431 | loc->cond_bytecode = NULL; |
0d381245 VP |
6432 | loc->shlib_disabled = 0; |
6433 | loc->enabled = 1; | |
e049a4b5 | 6434 | |
28010a5d | 6435 | switch (owner->type) |
e049a4b5 DJ |
6436 | { |
6437 | case bp_breakpoint: | |
6438 | case bp_until: | |
6439 | case bp_finish: | |
6440 | case bp_longjmp: | |
6441 | case bp_longjmp_resume: | |
186c406b TT |
6442 | case bp_exception: |
6443 | case bp_exception_resume: | |
e049a4b5 | 6444 | case bp_step_resume: |
2c03e5be | 6445 | case bp_hp_step_resume: |
e049a4b5 DJ |
6446 | case bp_watchpoint_scope: |
6447 | case bp_call_dummy: | |
aa7d318d | 6448 | case bp_std_terminate: |
e049a4b5 DJ |
6449 | case bp_shlib_event: |
6450 | case bp_thread_event: | |
6451 | case bp_overlay_event: | |
4efc6507 | 6452 | case bp_jit_event: |
0fd8e87f | 6453 | case bp_longjmp_master: |
aa7d318d | 6454 | case bp_std_terminate_master: |
186c406b | 6455 | case bp_exception_master: |
0e30163f JK |
6456 | case bp_gnu_ifunc_resolver: |
6457 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6458 | case bp_dprintf: |
e049a4b5 | 6459 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6460 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6461 | break; |
6462 | case bp_hardware_breakpoint: | |
6463 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6464 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6465 | break; |
6466 | case bp_hardware_watchpoint: | |
6467 | case bp_read_watchpoint: | |
6468 | case bp_access_watchpoint: | |
6469 | loc->loc_type = bp_loc_hardware_watchpoint; | |
6470 | break; | |
6471 | case bp_watchpoint: | |
ce78b96d | 6472 | case bp_catchpoint: |
15c3d785 PA |
6473 | case bp_tracepoint: |
6474 | case bp_fast_tracepoint: | |
0fb4aa4b | 6475 | case bp_static_tracepoint: |
e049a4b5 DJ |
6476 | loc->loc_type = bp_loc_other; |
6477 | break; | |
6478 | default: | |
e2e0b3e5 | 6479 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
6480 | } |
6481 | ||
f431efe5 | 6482 | loc->refc = 1; |
28010a5d PA |
6483 | } |
6484 | ||
6485 | /* Allocate a struct bp_location. */ | |
6486 | ||
6487 | static struct bp_location * | |
6488 | allocate_bp_location (struct breakpoint *bpt) | |
6489 | { | |
348d480f PA |
6490 | return bpt->ops->allocate_location (bpt); |
6491 | } | |
7cc221ef | 6492 | |
f431efe5 PA |
6493 | static void |
6494 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6495 | { |
348d480f | 6496 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
6497 | xfree (loc); |
6498 | } | |
6499 | ||
f431efe5 PA |
6500 | /* Increment reference count. */ |
6501 | ||
6502 | static void | |
6503 | incref_bp_location (struct bp_location *bl) | |
6504 | { | |
6505 | ++bl->refc; | |
6506 | } | |
6507 | ||
6508 | /* Decrement reference count. If the reference count reaches 0, | |
6509 | destroy the bp_location. Sets *BLP to NULL. */ | |
6510 | ||
6511 | static void | |
6512 | decref_bp_location (struct bp_location **blp) | |
6513 | { | |
0807b50c PA |
6514 | gdb_assert ((*blp)->refc > 0); |
6515 | ||
f431efe5 PA |
6516 | if (--(*blp)->refc == 0) |
6517 | free_bp_location (*blp); | |
6518 | *blp = NULL; | |
6519 | } | |
6520 | ||
346774a9 | 6521 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 6522 | |
346774a9 PA |
6523 | static void |
6524 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 6525 | { |
346774a9 | 6526 | struct breakpoint *b1; |
c906108c | 6527 | |
346774a9 PA |
6528 | /* Add this breakpoint to the end of the chain so that a list of |
6529 | breakpoints will come out in order of increasing numbers. */ | |
6530 | ||
6531 | b1 = breakpoint_chain; | |
6532 | if (b1 == 0) | |
6533 | breakpoint_chain = b; | |
6534 | else | |
6535 | { | |
6536 | while (b1->next) | |
6537 | b1 = b1->next; | |
6538 | b1->next = b; | |
6539 | } | |
6540 | } | |
6541 | ||
6542 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
6543 | ||
6544 | static void | |
6545 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
6546 | struct gdbarch *gdbarch, | |
28010a5d | 6547 | enum bptype bptype, |
c0a91b2b | 6548 | const struct breakpoint_ops *ops) |
346774a9 | 6549 | { |
c906108c | 6550 | memset (b, 0, sizeof (*b)); |
2219d63c | 6551 | |
348d480f PA |
6552 | gdb_assert (ops != NULL); |
6553 | ||
28010a5d | 6554 | b->ops = ops; |
4d28f7a8 | 6555 | b->type = bptype; |
a6d9a66e | 6556 | b->gdbarch = gdbarch; |
c906108c SS |
6557 | b->language = current_language->la_language; |
6558 | b->input_radix = input_radix; | |
6559 | b->thread = -1; | |
b5de0fa7 | 6560 | b->enable_state = bp_enabled; |
c906108c SS |
6561 | b->next = 0; |
6562 | b->silent = 0; | |
6563 | b->ignore_count = 0; | |
6564 | b->commands = NULL; | |
818dd999 | 6565 | b->frame_id = null_frame_id; |
0d381245 | 6566 | b->condition_not_parsed = 0; |
84f4c1fe | 6567 | b->py_bp_object = NULL; |
d0fb5eae | 6568 | b->related_breakpoint = b; |
346774a9 PA |
6569 | } |
6570 | ||
6571 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
6572 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
6573 | |
6574 | static struct breakpoint * | |
6575 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 6576 | enum bptype bptype, |
c0a91b2b | 6577 | const struct breakpoint_ops *ops) |
346774a9 PA |
6578 | { |
6579 | struct breakpoint *b = XNEW (struct breakpoint); | |
6580 | ||
348d480f | 6581 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 6582 | add_to_breakpoint_chain (b); |
0d381245 VP |
6583 | return b; |
6584 | } | |
6585 | ||
0e30163f JK |
6586 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
6587 | resolutions should be made as the user specified the location explicitly | |
6588 | enough. */ | |
6589 | ||
0d381245 | 6590 | static void |
0e30163f | 6591 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 6592 | { |
2bdf28a0 JK |
6593 | gdb_assert (loc->owner != NULL); |
6594 | ||
0d381245 | 6595 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 6596 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 6597 | || is_tracepoint (loc->owner)) |
0d381245 | 6598 | { |
0e30163f | 6599 | int is_gnu_ifunc; |
2c02bd72 | 6600 | const char *function_name; |
0e30163f | 6601 | |
2c02bd72 | 6602 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
0e30163f JK |
6603 | NULL, NULL, &is_gnu_ifunc); |
6604 | ||
6605 | if (is_gnu_ifunc && !explicit_loc) | |
6606 | { | |
6607 | struct breakpoint *b = loc->owner; | |
6608 | ||
6609 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 6610 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
6611 | &loc->requested_address)) |
6612 | { | |
6613 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
6614 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
6615 | loc->requested_address, | |
6616 | b->type); | |
6617 | } | |
6618 | else if (b->type == bp_breakpoint && b->loc == loc | |
6619 | && loc->next == NULL && b->related_breakpoint == b) | |
6620 | { | |
6621 | /* Create only the whole new breakpoint of this type but do not | |
6622 | mess more complicated breakpoints with multiple locations. */ | |
6623 | b->type = bp_gnu_ifunc_resolver; | |
6624 | } | |
6625 | } | |
6626 | ||
2c02bd72 DE |
6627 | if (function_name) |
6628 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
6629 | } |
6630 | } | |
6631 | ||
a6d9a66e | 6632 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 6633 | struct gdbarch * |
a6d9a66e UW |
6634 | get_sal_arch (struct symtab_and_line sal) |
6635 | { | |
6636 | if (sal.section) | |
6637 | return get_objfile_arch (sal.section->objfile); | |
6638 | if (sal.symtab) | |
6639 | return get_objfile_arch (sal.symtab->objfile); | |
6640 | ||
6641 | return NULL; | |
6642 | } | |
6643 | ||
346774a9 PA |
6644 | /* Low level routine for partially initializing a breakpoint of type |
6645 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 6646 | file name, and line number are provided by SAL. |
0d381245 VP |
6647 | |
6648 | It is expected that the caller will complete the initialization of | |
6649 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 6650 | information regarding the creation of a new breakpoint. */ |
0d381245 | 6651 | |
346774a9 PA |
6652 | static void |
6653 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 6654 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 6655 | const struct breakpoint_ops *ops) |
0d381245 | 6656 | { |
28010a5d | 6657 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 6658 | |
3742cc8b | 6659 | add_location_to_breakpoint (b, &sal); |
0d381245 | 6660 | |
6c95b8df PA |
6661 | if (bptype != bp_catchpoint) |
6662 | gdb_assert (sal.pspace != NULL); | |
6663 | ||
f8eba3c6 TT |
6664 | /* Store the program space that was used to set the breakpoint, |
6665 | except for ordinary breakpoints, which are independent of the | |
6666 | program space. */ | |
6667 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
6668 | b->pspace = sal.pspace; | |
0d381245 | 6669 | |
c906108c | 6670 | breakpoints_changed (); |
346774a9 | 6671 | } |
c906108c | 6672 | |
346774a9 PA |
6673 | /* set_raw_breakpoint is a low level routine for allocating and |
6674 | partially initializing a breakpoint of type BPTYPE. The newly | |
6675 | created breakpoint's address, section, source file name, and line | |
6676 | number are provided by SAL. The newly created and partially | |
6677 | initialized breakpoint is added to the breakpoint chain and | |
6678 | is also returned as the value of this function. | |
6679 | ||
6680 | It is expected that the caller will complete the initialization of | |
6681 | the newly created breakpoint struct as well as output any status | |
6682 | information regarding the creation of a new breakpoint. In | |
6683 | particular, set_raw_breakpoint does NOT set the breakpoint | |
6684 | number! Care should be taken to not allow an error to occur | |
6685 | prior to completing the initialization of the breakpoint. If this | |
6686 | should happen, a bogus breakpoint will be left on the chain. */ | |
6687 | ||
6688 | struct breakpoint * | |
6689 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 6690 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 6691 | const struct breakpoint_ops *ops) |
346774a9 PA |
6692 | { |
6693 | struct breakpoint *b = XNEW (struct breakpoint); | |
6694 | ||
348d480f | 6695 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 6696 | add_to_breakpoint_chain (b); |
c906108c SS |
6697 | return b; |
6698 | } | |
6699 | ||
c2c6d25f JM |
6700 | |
6701 | /* Note that the breakpoint object B describes a permanent breakpoint | |
6702 | instruction, hard-wired into the inferior's code. */ | |
6703 | void | |
6704 | make_breakpoint_permanent (struct breakpoint *b) | |
6705 | { | |
0d381245 | 6706 | struct bp_location *bl; |
cc59ec59 | 6707 | |
b5de0fa7 | 6708 | b->enable_state = bp_permanent; |
c2c6d25f | 6709 | |
4a64f543 MS |
6710 | /* By definition, permanent breakpoints are already present in the |
6711 | code. Mark all locations as inserted. For now, | |
6712 | make_breakpoint_permanent is called in just one place, so it's | |
6713 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 6714 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
6715 | for (bl = b->loc; bl; bl = bl->next) |
6716 | bl->inserted = 1; | |
c2c6d25f JM |
6717 | } |
6718 | ||
53a5351d | 6719 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
6720 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
6721 | initiated the operation. */ | |
c906108c SS |
6722 | |
6723 | void | |
186c406b | 6724 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 6725 | { |
35df4500 | 6726 | struct breakpoint *b, *b_tmp; |
186c406b | 6727 | int thread = tp->num; |
0fd8e87f UW |
6728 | |
6729 | /* To avoid having to rescan all objfile symbols at every step, | |
6730 | we maintain a list of continually-inserted but always disabled | |
6731 | longjmp "master" breakpoints. Here, we simply create momentary | |
6732 | clones of those and enable them for the requested thread. */ | |
35df4500 | 6733 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 6734 | if (b->pspace == current_program_space |
186c406b TT |
6735 | && (b->type == bp_longjmp_master |
6736 | || b->type == bp_exception_master)) | |
0fd8e87f | 6737 | { |
06edf0c0 PA |
6738 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
6739 | struct breakpoint *clone; | |
cc59ec59 | 6740 | |
06edf0c0 PA |
6741 | clone = momentary_breakpoint_from_master (b, type, |
6742 | &momentary_breakpoint_ops); | |
0fd8e87f UW |
6743 | clone->thread = thread; |
6744 | } | |
186c406b TT |
6745 | |
6746 | tp->initiating_frame = frame; | |
c906108c SS |
6747 | } |
6748 | ||
611c83ae | 6749 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 6750 | void |
611c83ae | 6751 | delete_longjmp_breakpoint (int thread) |
c906108c | 6752 | { |
35df4500 | 6753 | struct breakpoint *b, *b_tmp; |
c906108c | 6754 | |
35df4500 | 6755 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 6756 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
6757 | { |
6758 | if (b->thread == thread) | |
6759 | delete_breakpoint (b); | |
6760 | } | |
c906108c SS |
6761 | } |
6762 | ||
f59f708a PA |
6763 | void |
6764 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
6765 | { | |
6766 | struct breakpoint *b, *b_tmp; | |
6767 | ||
6768 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6769 | if (b->type == bp_longjmp || b->type == bp_exception) | |
6770 | { | |
6771 | if (b->thread == thread) | |
6772 | b->disposition = disp_del_at_next_stop; | |
6773 | } | |
6774 | } | |
6775 | ||
1900040c MS |
6776 | void |
6777 | enable_overlay_breakpoints (void) | |
6778 | { | |
52f0bd74 | 6779 | struct breakpoint *b; |
1900040c MS |
6780 | |
6781 | ALL_BREAKPOINTS (b) | |
6782 | if (b->type == bp_overlay_event) | |
6783 | { | |
6784 | b->enable_state = bp_enabled; | |
b60e7edf | 6785 | update_global_location_list (1); |
c02f5703 | 6786 | overlay_events_enabled = 1; |
1900040c MS |
6787 | } |
6788 | } | |
6789 | ||
6790 | void | |
6791 | disable_overlay_breakpoints (void) | |
6792 | { | |
52f0bd74 | 6793 | struct breakpoint *b; |
1900040c MS |
6794 | |
6795 | ALL_BREAKPOINTS (b) | |
6796 | if (b->type == bp_overlay_event) | |
6797 | { | |
6798 | b->enable_state = bp_disabled; | |
b60e7edf | 6799 | update_global_location_list (0); |
c02f5703 | 6800 | overlay_events_enabled = 0; |
1900040c MS |
6801 | } |
6802 | } | |
6803 | ||
aa7d318d TT |
6804 | /* Set an active std::terminate breakpoint for each std::terminate |
6805 | master breakpoint. */ | |
6806 | void | |
6807 | set_std_terminate_breakpoint (void) | |
6808 | { | |
35df4500 | 6809 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6810 | |
35df4500 | 6811 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6812 | if (b->pspace == current_program_space |
6813 | && b->type == bp_std_terminate_master) | |
6814 | { | |
06edf0c0 PA |
6815 | momentary_breakpoint_from_master (b, bp_std_terminate, |
6816 | &momentary_breakpoint_ops); | |
aa7d318d TT |
6817 | } |
6818 | } | |
6819 | ||
6820 | /* Delete all the std::terminate breakpoints. */ | |
6821 | void | |
6822 | delete_std_terminate_breakpoint (void) | |
6823 | { | |
35df4500 | 6824 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6825 | |
35df4500 | 6826 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6827 | if (b->type == bp_std_terminate) |
6828 | delete_breakpoint (b); | |
6829 | } | |
6830 | ||
c4093a6a | 6831 | struct breakpoint * |
a6d9a66e | 6832 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
6833 | { |
6834 | struct breakpoint *b; | |
c4093a6a | 6835 | |
06edf0c0 PA |
6836 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
6837 | &internal_breakpoint_ops); | |
6838 | ||
b5de0fa7 | 6839 | b->enable_state = bp_enabled; |
c4093a6a | 6840 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
6841 | b->addr_string |
6842 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 6843 | |
b60e7edf | 6844 | update_global_location_list_nothrow (1); |
74960c60 | 6845 | |
c4093a6a JM |
6846 | return b; |
6847 | } | |
6848 | ||
6849 | void | |
6850 | remove_thread_event_breakpoints (void) | |
6851 | { | |
35df4500 | 6852 | struct breakpoint *b, *b_tmp; |
c4093a6a | 6853 | |
35df4500 | 6854 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6855 | if (b->type == bp_thread_event |
6856 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
6857 | delete_breakpoint (b); |
6858 | } | |
6859 | ||
0101ce28 JJ |
6860 | struct lang_and_radix |
6861 | { | |
6862 | enum language lang; | |
6863 | int radix; | |
6864 | }; | |
6865 | ||
4efc6507 DE |
6866 | /* Create a breakpoint for JIT code registration and unregistration. */ |
6867 | ||
6868 | struct breakpoint * | |
6869 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
6870 | { | |
6871 | struct breakpoint *b; | |
6872 | ||
06edf0c0 PA |
6873 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
6874 | &internal_breakpoint_ops); | |
4efc6507 DE |
6875 | update_global_location_list_nothrow (1); |
6876 | return b; | |
6877 | } | |
0101ce28 | 6878 | |
03673fc7 PP |
6879 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
6880 | ||
6881 | void | |
6882 | remove_jit_event_breakpoints (void) | |
6883 | { | |
6884 | struct breakpoint *b, *b_tmp; | |
6885 | ||
6886 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6887 | if (b->type == bp_jit_event | |
6888 | && b->loc->pspace == current_program_space) | |
6889 | delete_breakpoint (b); | |
6890 | } | |
6891 | ||
cae688ec JJ |
6892 | void |
6893 | remove_solib_event_breakpoints (void) | |
6894 | { | |
35df4500 | 6895 | struct breakpoint *b, *b_tmp; |
cae688ec | 6896 | |
35df4500 | 6897 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6898 | if (b->type == bp_shlib_event |
6899 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
6900 | delete_breakpoint (b); |
6901 | } | |
6902 | ||
6903 | struct breakpoint * | |
a6d9a66e | 6904 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
6905 | { |
6906 | struct breakpoint *b; | |
6907 | ||
06edf0c0 PA |
6908 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
6909 | &internal_breakpoint_ops); | |
b60e7edf | 6910 | update_global_location_list_nothrow (1); |
cae688ec JJ |
6911 | return b; |
6912 | } | |
6913 | ||
6914 | /* Disable any breakpoints that are on code in shared libraries. Only | |
6915 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
6916 | ||
6917 | void | |
cb851954 | 6918 | disable_breakpoints_in_shlibs (void) |
cae688ec | 6919 | { |
876fa593 | 6920 | struct bp_location *loc, **locp_tmp; |
cae688ec | 6921 | |
876fa593 | 6922 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 6923 | { |
2bdf28a0 | 6924 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6925 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 6926 | |
4a64f543 MS |
6927 | /* We apply the check to all breakpoints, including disabled for |
6928 | those with loc->duplicate set. This is so that when breakpoint | |
6929 | becomes enabled, or the duplicate is removed, gdb will try to | |
6930 | insert all breakpoints. If we don't set shlib_disabled here, | |
6931 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 6932 | if (((b->type == bp_breakpoint) |
508ccb1f | 6933 | || (b->type == bp_jit_event) |
1042e4c0 | 6934 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 6935 | || (is_tracepoint (b))) |
6c95b8df | 6936 | && loc->pspace == current_program_space |
0d381245 | 6937 | && !loc->shlib_disabled |
a77053c2 | 6938 | #ifdef PC_SOLIB |
0d381245 | 6939 | && PC_SOLIB (loc->address) |
a77053c2 | 6940 | #else |
6c95b8df | 6941 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
6942 | #endif |
6943 | ) | |
0d381245 VP |
6944 | { |
6945 | loc->shlib_disabled = 1; | |
6946 | } | |
cae688ec JJ |
6947 | } |
6948 | } | |
6949 | ||
1e4d1764 YQ |
6950 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
6951 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 6952 | disabled. */ |
84acb35a | 6953 | |
75149521 | 6954 | static void |
84acb35a JJ |
6955 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
6956 | { | |
876fa593 | 6957 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
6958 | int disabled_shlib_breaks = 0; |
6959 | ||
c86cf029 VP |
6960 | /* SunOS a.out shared libraries are always mapped, so do not |
6961 | disable breakpoints; they will only be reported as unloaded | |
6962 | through clear_solib when GDB discards its shared library | |
6963 | list. See clear_solib for more information. */ | |
6964 | if (exec_bfd != NULL | |
6965 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
6966 | return; | |
6967 | ||
876fa593 | 6968 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 6969 | { |
2bdf28a0 | 6970 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6971 | struct breakpoint *b = loc->owner; |
cc59ec59 | 6972 | |
1e4d1764 | 6973 | if (solib->pspace == loc->pspace |
e2dd7057 | 6974 | && !loc->shlib_disabled |
1e4d1764 YQ |
6975 | && (((b->type == bp_breakpoint |
6976 | || b->type == bp_jit_event | |
6977 | || b->type == bp_hardware_breakpoint) | |
6978 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
6979 | || loc->loc_type == bp_loc_software_breakpoint)) | |
6980 | || is_tracepoint (b)) | |
e2dd7057 | 6981 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 6982 | { |
e2dd7057 PP |
6983 | loc->shlib_disabled = 1; |
6984 | /* At this point, we cannot rely on remove_breakpoint | |
6985 | succeeding so we must mark the breakpoint as not inserted | |
6986 | to prevent future errors occurring in remove_breakpoints. */ | |
6987 | loc->inserted = 0; | |
8d3788bd VP |
6988 | |
6989 | /* This may cause duplicate notifications for the same breakpoint. */ | |
6990 | observer_notify_breakpoint_modified (b); | |
6991 | ||
e2dd7057 PP |
6992 | if (!disabled_shlib_breaks) |
6993 | { | |
6994 | target_terminal_ours_for_output (); | |
3e43a32a MS |
6995 | warning (_("Temporarily disabling breakpoints " |
6996 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 6997 | solib->so_name); |
84acb35a | 6998 | } |
e2dd7057 | 6999 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7000 | } |
7001 | } | |
84acb35a JJ |
7002 | } |
7003 | ||
ce78b96d JB |
7004 | /* FORK & VFORK catchpoints. */ |
7005 | ||
e29a4733 PA |
7006 | /* An instance of this type is used to represent a fork or vfork |
7007 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7008 | class; users downcast to "struct breakpoint *" when needed. A | |
7009 | breakpoint is really of this type iff its ops pointer points to | |
7010 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7011 | ||
7012 | struct fork_catchpoint | |
7013 | { | |
7014 | /* The base class. */ | |
7015 | struct breakpoint base; | |
7016 | ||
7017 | /* Process id of a child process whose forking triggered this | |
7018 | catchpoint. This field is only valid immediately after this | |
7019 | catchpoint has triggered. */ | |
7020 | ptid_t forked_inferior_pid; | |
7021 | }; | |
7022 | ||
4a64f543 MS |
7023 | /* Implement the "insert" breakpoint_ops method for fork |
7024 | catchpoints. */ | |
ce78b96d | 7025 | |
77b06cd7 TJB |
7026 | static int |
7027 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7028 | { |
77b06cd7 | 7029 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7030 | } |
7031 | ||
4a64f543 MS |
7032 | /* Implement the "remove" breakpoint_ops method for fork |
7033 | catchpoints. */ | |
ce78b96d JB |
7034 | |
7035 | static int | |
77b06cd7 | 7036 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
7037 | { |
7038 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
7039 | } | |
7040 | ||
7041 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7042 | catchpoints. */ | |
7043 | ||
7044 | static int | |
f1310107 | 7045 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7046 | struct address_space *aspace, CORE_ADDR bp_addr, |
7047 | const struct target_waitstatus *ws) | |
ce78b96d | 7048 | { |
e29a4733 PA |
7049 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7050 | ||
f90263c1 TT |
7051 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7052 | return 0; | |
7053 | ||
7054 | c->forked_inferior_pid = ws->value.related_pid; | |
7055 | return 1; | |
ce78b96d JB |
7056 | } |
7057 | ||
4a64f543 MS |
7058 | /* Implement the "print_it" breakpoint_ops method for fork |
7059 | catchpoints. */ | |
ce78b96d JB |
7060 | |
7061 | static enum print_stop_action | |
348d480f | 7062 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7063 | { |
36dfb11c | 7064 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7065 | struct breakpoint *b = bs->breakpoint_at; |
7066 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7067 | |
ce78b96d | 7068 | annotate_catchpoint (b->number); |
36dfb11c TT |
7069 | if (b->disposition == disp_del) |
7070 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7071 | else | |
7072 | ui_out_text (uiout, "\nCatchpoint "); | |
7073 | if (ui_out_is_mi_like_p (uiout)) | |
7074 | { | |
7075 | ui_out_field_string (uiout, "reason", | |
7076 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7077 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7078 | } | |
7079 | ui_out_field_int (uiout, "bkptno", b->number); | |
7080 | ui_out_text (uiout, " (forked process "); | |
7081 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7082 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7083 | return PRINT_SRC_AND_LOC; |
7084 | } | |
7085 | ||
4a64f543 MS |
7086 | /* Implement the "print_one" breakpoint_ops method for fork |
7087 | catchpoints. */ | |
ce78b96d JB |
7088 | |
7089 | static void | |
a6d9a66e | 7090 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7091 | { |
e29a4733 | 7092 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7093 | struct value_print_options opts; |
79a45e25 | 7094 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7095 | |
7096 | get_user_print_options (&opts); | |
7097 | ||
4a64f543 MS |
7098 | /* Field 4, the address, is omitted (which makes the columns not |
7099 | line up too nicely with the headers, but the effect is relatively | |
7100 | readable). */ | |
79a45b7d | 7101 | if (opts.addressprint) |
ce78b96d JB |
7102 | ui_out_field_skip (uiout, "addr"); |
7103 | annotate_field (5); | |
7104 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7105 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7106 | { |
7107 | ui_out_text (uiout, ", process "); | |
7108 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7109 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7110 | ui_out_spaces (uiout, 1); |
7111 | } | |
7112 | } | |
7113 | ||
7114 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7115 | catchpoints. */ | |
7116 | ||
7117 | static void | |
7118 | print_mention_catch_fork (struct breakpoint *b) | |
7119 | { | |
7120 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7121 | } | |
7122 | ||
6149aea9 PA |
7123 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7124 | catchpoints. */ | |
7125 | ||
7126 | static void | |
7127 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7128 | { | |
7129 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7130 | print_recreate_thread (b, fp); |
6149aea9 PA |
7131 | } |
7132 | ||
ce78b96d JB |
7133 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7134 | ||
2060206e | 7135 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7136 | |
4a64f543 MS |
7137 | /* Implement the "insert" breakpoint_ops method for vfork |
7138 | catchpoints. */ | |
ce78b96d | 7139 | |
77b06cd7 TJB |
7140 | static int |
7141 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7142 | { |
77b06cd7 | 7143 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7144 | } |
7145 | ||
4a64f543 MS |
7146 | /* Implement the "remove" breakpoint_ops method for vfork |
7147 | catchpoints. */ | |
ce78b96d JB |
7148 | |
7149 | static int | |
77b06cd7 | 7150 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
7151 | { |
7152 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
7153 | } | |
7154 | ||
7155 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7156 | catchpoints. */ | |
7157 | ||
7158 | static int | |
f1310107 | 7159 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7160 | struct address_space *aspace, CORE_ADDR bp_addr, |
7161 | const struct target_waitstatus *ws) | |
ce78b96d | 7162 | { |
e29a4733 PA |
7163 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7164 | ||
f90263c1 TT |
7165 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7166 | return 0; | |
7167 | ||
7168 | c->forked_inferior_pid = ws->value.related_pid; | |
7169 | return 1; | |
ce78b96d JB |
7170 | } |
7171 | ||
4a64f543 MS |
7172 | /* Implement the "print_it" breakpoint_ops method for vfork |
7173 | catchpoints. */ | |
ce78b96d JB |
7174 | |
7175 | static enum print_stop_action | |
348d480f | 7176 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7177 | { |
36dfb11c | 7178 | struct ui_out *uiout = current_uiout; |
348d480f | 7179 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7180 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7181 | ||
ce78b96d | 7182 | annotate_catchpoint (b->number); |
36dfb11c TT |
7183 | if (b->disposition == disp_del) |
7184 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7185 | else | |
7186 | ui_out_text (uiout, "\nCatchpoint "); | |
7187 | if (ui_out_is_mi_like_p (uiout)) | |
7188 | { | |
7189 | ui_out_field_string (uiout, "reason", | |
7190 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
7191 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7192 | } | |
7193 | ui_out_field_int (uiout, "bkptno", b->number); | |
7194 | ui_out_text (uiout, " (vforked process "); | |
7195 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7196 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7197 | return PRINT_SRC_AND_LOC; |
7198 | } | |
7199 | ||
4a64f543 MS |
7200 | /* Implement the "print_one" breakpoint_ops method for vfork |
7201 | catchpoints. */ | |
ce78b96d JB |
7202 | |
7203 | static void | |
a6d9a66e | 7204 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7205 | { |
e29a4733 | 7206 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7207 | struct value_print_options opts; |
79a45e25 | 7208 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7209 | |
7210 | get_user_print_options (&opts); | |
4a64f543 MS |
7211 | /* Field 4, the address, is omitted (which makes the columns not |
7212 | line up too nicely with the headers, but the effect is relatively | |
7213 | readable). */ | |
79a45b7d | 7214 | if (opts.addressprint) |
ce78b96d JB |
7215 | ui_out_field_skip (uiout, "addr"); |
7216 | annotate_field (5); | |
7217 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 7218 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7219 | { |
7220 | ui_out_text (uiout, ", process "); | |
7221 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7222 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7223 | ui_out_spaces (uiout, 1); |
7224 | } | |
7225 | } | |
7226 | ||
7227 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7228 | catchpoints. */ | |
7229 | ||
7230 | static void | |
7231 | print_mention_catch_vfork (struct breakpoint *b) | |
7232 | { | |
7233 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7234 | } | |
7235 | ||
6149aea9 PA |
7236 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7237 | catchpoints. */ | |
7238 | ||
7239 | static void | |
7240 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7241 | { | |
7242 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7243 | print_recreate_thread (b, fp); |
6149aea9 PA |
7244 | } |
7245 | ||
ce78b96d JB |
7246 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7247 | ||
2060206e | 7248 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7249 | |
edcc5120 TT |
7250 | /* An instance of this type is used to represent an solib catchpoint. |
7251 | It includes a "struct breakpoint" as a kind of base class; users | |
7252 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7253 | really of this type iff its ops pointer points to | |
7254 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
7255 | ||
7256 | struct solib_catchpoint | |
7257 | { | |
7258 | /* The base class. */ | |
7259 | struct breakpoint base; | |
7260 | ||
7261 | /* True for "catch load", false for "catch unload". */ | |
7262 | unsigned char is_load; | |
7263 | ||
7264 | /* Regular expression to match, if any. COMPILED is only valid when | |
7265 | REGEX is non-NULL. */ | |
7266 | char *regex; | |
7267 | regex_t compiled; | |
7268 | }; | |
7269 | ||
7270 | static void | |
7271 | dtor_catch_solib (struct breakpoint *b) | |
7272 | { | |
7273 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7274 | ||
7275 | if (self->regex) | |
7276 | regfree (&self->compiled); | |
7277 | xfree (self->regex); | |
7278 | ||
7279 | base_breakpoint_ops.dtor (b); | |
7280 | } | |
7281 | ||
7282 | static int | |
7283 | insert_catch_solib (struct bp_location *ignore) | |
7284 | { | |
7285 | return 0; | |
7286 | } | |
7287 | ||
7288 | static int | |
7289 | remove_catch_solib (struct bp_location *ignore) | |
7290 | { | |
7291 | return 0; | |
7292 | } | |
7293 | ||
7294 | static int | |
7295 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
7296 | struct address_space *aspace, | |
7297 | CORE_ADDR bp_addr, | |
7298 | const struct target_waitstatus *ws) | |
7299 | { | |
7300 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7301 | struct breakpoint *other; | |
7302 | ||
7303 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7304 | return 1; | |
7305 | ||
7306 | ALL_BREAKPOINTS (other) | |
7307 | { | |
7308 | struct bp_location *other_bl; | |
7309 | ||
7310 | if (other == bl->owner) | |
7311 | continue; | |
7312 | ||
7313 | if (other->type != bp_shlib_event) | |
7314 | continue; | |
7315 | ||
7316 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
7317 | continue; | |
7318 | ||
7319 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7320 | { | |
7321 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7322 | return 1; | |
7323 | } | |
7324 | } | |
7325 | ||
7326 | return 0; | |
7327 | } | |
7328 | ||
7329 | static void | |
7330 | check_status_catch_solib (struct bpstats *bs) | |
7331 | { | |
7332 | struct solib_catchpoint *self | |
7333 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
7334 | int ix; | |
7335 | ||
7336 | if (self->is_load) | |
7337 | { | |
7338 | struct so_list *iter; | |
7339 | ||
7340 | for (ix = 0; | |
7341 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
7342 | ix, iter); | |
7343 | ++ix) | |
7344 | { | |
7345 | if (!self->regex | |
7346 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
7347 | return; | |
7348 | } | |
7349 | } | |
7350 | else | |
7351 | { | |
7352 | char *iter; | |
7353 | ||
7354 | for (ix = 0; | |
7355 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
7356 | ix, iter); | |
7357 | ++ix) | |
7358 | { | |
7359 | if (!self->regex | |
7360 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
7361 | return; | |
7362 | } | |
7363 | } | |
7364 | ||
7365 | bs->stop = 0; | |
7366 | bs->print_it = print_it_noop; | |
7367 | } | |
7368 | ||
7369 | static enum print_stop_action | |
7370 | print_it_catch_solib (bpstat bs) | |
7371 | { | |
7372 | struct breakpoint *b = bs->breakpoint_at; | |
7373 | struct ui_out *uiout = current_uiout; | |
7374 | ||
7375 | annotate_catchpoint (b->number); | |
7376 | if (b->disposition == disp_del) | |
7377 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7378 | else | |
7379 | ui_out_text (uiout, "\nCatchpoint "); | |
7380 | ui_out_field_int (uiout, "bkptno", b->number); | |
7381 | ui_out_text (uiout, "\n"); | |
7382 | if (ui_out_is_mi_like_p (uiout)) | |
7383 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7384 | print_solib_event (1); | |
7385 | return PRINT_SRC_AND_LOC; | |
7386 | } | |
7387 | ||
7388 | static void | |
7389 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7390 | { | |
7391 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7392 | struct value_print_options opts; | |
7393 | struct ui_out *uiout = current_uiout; | |
7394 | char *msg; | |
7395 | ||
7396 | get_user_print_options (&opts); | |
7397 | /* Field 4, the address, is omitted (which makes the columns not | |
7398 | line up too nicely with the headers, but the effect is relatively | |
7399 | readable). */ | |
7400 | if (opts.addressprint) | |
7401 | { | |
7402 | annotate_field (4); | |
7403 | ui_out_field_skip (uiout, "addr"); | |
7404 | } | |
7405 | ||
7406 | annotate_field (5); | |
7407 | if (self->is_load) | |
7408 | { | |
7409 | if (self->regex) | |
7410 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
7411 | else | |
7412 | msg = xstrdup (_("load of library")); | |
7413 | } | |
7414 | else | |
7415 | { | |
7416 | if (self->regex) | |
7417 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
7418 | else | |
7419 | msg = xstrdup (_("unload of library")); | |
7420 | } | |
7421 | ui_out_field_string (uiout, "what", msg); | |
7422 | xfree (msg); | |
7423 | } | |
7424 | ||
7425 | static void | |
7426 | print_mention_catch_solib (struct breakpoint *b) | |
7427 | { | |
7428 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7429 | ||
7430 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
7431 | self->is_load ? "load" : "unload"); | |
7432 | } | |
7433 | ||
7434 | static void | |
7435 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
7436 | { | |
7437 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7438 | ||
7439 | fprintf_unfiltered (fp, "%s %s", | |
7440 | b->disposition == disp_del ? "tcatch" : "catch", | |
7441 | self->is_load ? "load" : "unload"); | |
7442 | if (self->regex) | |
7443 | fprintf_unfiltered (fp, " %s", self->regex); | |
7444 | fprintf_unfiltered (fp, "\n"); | |
7445 | } | |
7446 | ||
7447 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
7448 | ||
7449 | /* A helper function that does all the work for "catch load" and | |
7450 | "catch unload". */ | |
7451 | ||
7452 | static void | |
7453 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
7454 | struct cmd_list_element *command) | |
7455 | { | |
7456 | struct solib_catchpoint *c; | |
7457 | struct gdbarch *gdbarch = get_current_arch (); | |
7458 | int tempflag; | |
7459 | regex_t compiled; | |
7460 | struct cleanup *cleanup; | |
7461 | ||
7462 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7463 | ||
7464 | if (!arg) | |
7465 | arg = ""; | |
7466 | arg = skip_spaces (arg); | |
7467 | ||
7468 | c = XCNEW (struct solib_catchpoint); | |
7469 | cleanup = make_cleanup (xfree, c); | |
7470 | ||
7471 | if (*arg != '\0') | |
7472 | { | |
7473 | int errcode; | |
7474 | ||
7475 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
7476 | if (errcode != 0) | |
7477 | { | |
7478 | char *err = get_regcomp_error (errcode, &c->compiled); | |
7479 | ||
7480 | make_cleanup (xfree, err); | |
7481 | error (_("Invalid regexp (%s): %s"), err, arg); | |
7482 | } | |
7483 | c->regex = xstrdup (arg); | |
7484 | } | |
7485 | ||
7486 | c->is_load = is_load; | |
7487 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, | |
7488 | &catch_solib_breakpoint_ops); | |
7489 | ||
7490 | discard_cleanups (cleanup); | |
7491 | install_breakpoint (0, &c->base, 1); | |
7492 | } | |
7493 | ||
7494 | static void | |
7495 | catch_load_command_1 (char *arg, int from_tty, | |
7496 | struct cmd_list_element *command) | |
7497 | { | |
7498 | catch_load_or_unload (arg, from_tty, 1, command); | |
7499 | } | |
7500 | ||
7501 | static void | |
7502 | catch_unload_command_1 (char *arg, int from_tty, | |
7503 | struct cmd_list_element *command) | |
7504 | { | |
7505 | catch_load_or_unload (arg, from_tty, 0, command); | |
7506 | } | |
7507 | ||
fa3064dd YQ |
7508 | DEF_VEC_I(int); |
7509 | ||
be5c67c1 PA |
7510 | /* An instance of this type is used to represent a syscall catchpoint. |
7511 | It includes a "struct breakpoint" as a kind of base class; users | |
7512 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7513 | really of this type iff its ops pointer points to | |
7514 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
7515 | ||
7516 | struct syscall_catchpoint | |
7517 | { | |
7518 | /* The base class. */ | |
7519 | struct breakpoint base; | |
7520 | ||
7521 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
7522 | syscall has been specified for filtering, its value is NULL. | |
7523 | Otherwise, it holds a list of all syscalls to be caught. The | |
7524 | list elements are allocated with xmalloc. */ | |
7525 | VEC(int) *syscalls_to_be_caught; | |
7526 | }; | |
7527 | ||
7528 | /* Implement the "dtor" breakpoint_ops method for syscall | |
7529 | catchpoints. */ | |
7530 | ||
7531 | static void | |
7532 | dtor_catch_syscall (struct breakpoint *b) | |
7533 | { | |
7534 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
7535 | ||
7536 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 7537 | |
2060206e | 7538 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
7539 | } |
7540 | ||
fa3064dd YQ |
7541 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
7542 | ||
7543 | struct catch_syscall_inferior_data | |
7544 | { | |
7545 | /* We keep a count of the number of times the user has requested a | |
7546 | particular syscall to be tracked, and pass this information to the | |
7547 | target. This lets capable targets implement filtering directly. */ | |
7548 | ||
7549 | /* Number of times that "any" syscall is requested. */ | |
7550 | int any_syscall_count; | |
7551 | ||
7552 | /* Count of each system call. */ | |
7553 | VEC(int) *syscalls_counts; | |
7554 | ||
7555 | /* This counts all syscall catch requests, so we can readily determine | |
7556 | if any catching is necessary. */ | |
7557 | int total_syscalls_count; | |
7558 | }; | |
7559 | ||
7560 | static struct catch_syscall_inferior_data* | |
7561 | get_catch_syscall_inferior_data (struct inferior *inf) | |
7562 | { | |
7563 | struct catch_syscall_inferior_data *inf_data; | |
7564 | ||
7565 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
7566 | if (inf_data == NULL) | |
7567 | { | |
7568 | inf_data = XZALLOC (struct catch_syscall_inferior_data); | |
7569 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); | |
7570 | } | |
7571 | ||
7572 | return inf_data; | |
7573 | } | |
7574 | ||
7575 | static void | |
7576 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
7577 | { | |
7578 | xfree (arg); | |
7579 | } | |
7580 | ||
7581 | ||
a96d9b2e SDJ |
7582 | /* Implement the "insert" breakpoint_ops method for syscall |
7583 | catchpoints. */ | |
7584 | ||
77b06cd7 TJB |
7585 | static int |
7586 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 7587 | { |
be5c67c1 | 7588 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 7589 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
7590 | struct catch_syscall_inferior_data *inf_data |
7591 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 7592 | |
fa3064dd | 7593 | ++inf_data->total_syscalls_count; |
be5c67c1 | 7594 | if (!c->syscalls_to_be_caught) |
fa3064dd | 7595 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
7596 | else |
7597 | { | |
7598 | int i, iter; | |
cc59ec59 | 7599 | |
a96d9b2e | 7600 | for (i = 0; |
be5c67c1 | 7601 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7602 | i++) |
7603 | { | |
7604 | int elem; | |
cc59ec59 | 7605 | |
fa3064dd | 7606 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 7607 | { |
fa3064dd | 7608 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
7609 | uintptr_t vec_addr_offset |
7610 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 7611 | uintptr_t vec_addr; |
fa3064dd YQ |
7612 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
7613 | vec_addr = ((uintptr_t) VEC_address (int, | |
7614 | inf_data->syscalls_counts) | |
7615 | + vec_addr_offset); | |
a96d9b2e SDJ |
7616 | memset ((void *) vec_addr, 0, |
7617 | (iter + 1 - old_size) * sizeof (int)); | |
7618 | } | |
fa3064dd YQ |
7619 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
7620 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
7621 | } |
7622 | } | |
7623 | ||
77b06cd7 | 7624 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
fa3064dd YQ |
7625 | inf_data->total_syscalls_count != 0, |
7626 | inf_data->any_syscall_count, | |
7627 | VEC_length (int, | |
7628 | inf_data->syscalls_counts), | |
7629 | VEC_address (int, | |
7630 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
7631 | } |
7632 | ||
7633 | /* Implement the "remove" breakpoint_ops method for syscall | |
7634 | catchpoints. */ | |
7635 | ||
7636 | static int | |
77b06cd7 | 7637 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 7638 | { |
be5c67c1 | 7639 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 7640 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
7641 | struct catch_syscall_inferior_data *inf_data |
7642 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 7643 | |
fa3064dd | 7644 | --inf_data->total_syscalls_count; |
be5c67c1 | 7645 | if (!c->syscalls_to_be_caught) |
fa3064dd | 7646 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
7647 | else |
7648 | { | |
7649 | int i, iter; | |
cc59ec59 | 7650 | |
a96d9b2e | 7651 | for (i = 0; |
be5c67c1 | 7652 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7653 | i++) |
7654 | { | |
7655 | int elem; | |
fa3064dd | 7656 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
7657 | /* Shouldn't happen. */ |
7658 | continue; | |
fa3064dd YQ |
7659 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
7660 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
7661 | } |
7662 | } | |
7663 | ||
7664 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
fa3064dd YQ |
7665 | inf_data->total_syscalls_count != 0, |
7666 | inf_data->any_syscall_count, | |
7667 | VEC_length (int, | |
7668 | inf_data->syscalls_counts), | |
3e43a32a | 7669 | VEC_address (int, |
fa3064dd | 7670 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
7671 | } |
7672 | ||
7673 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
7674 | catchpoints. */ | |
7675 | ||
7676 | static int | |
f1310107 | 7677 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
7678 | struct address_space *aspace, CORE_ADDR bp_addr, |
7679 | const struct target_waitstatus *ws) | |
a96d9b2e | 7680 | { |
4a64f543 MS |
7681 | /* We must check if we are catching specific syscalls in this |
7682 | breakpoint. If we are, then we must guarantee that the called | |
7683 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 7684 | int syscall_number = 0; |
be5c67c1 PA |
7685 | const struct syscall_catchpoint *c |
7686 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 7687 | |
f90263c1 TT |
7688 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
7689 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
7690 | return 0; |
7691 | ||
f90263c1 TT |
7692 | syscall_number = ws->value.syscall_number; |
7693 | ||
a96d9b2e | 7694 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 7695 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
7696 | { |
7697 | int i, iter; | |
cc59ec59 | 7698 | |
a96d9b2e | 7699 | for (i = 0; |
be5c67c1 | 7700 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7701 | i++) |
7702 | if (syscall_number == iter) | |
7703 | break; | |
7704 | /* Not the same. */ | |
7705 | if (!iter) | |
7706 | return 0; | |
7707 | } | |
7708 | ||
7709 | return 1; | |
7710 | } | |
7711 | ||
7712 | /* Implement the "print_it" breakpoint_ops method for syscall | |
7713 | catchpoints. */ | |
7714 | ||
7715 | static enum print_stop_action | |
348d480f | 7716 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 7717 | { |
36dfb11c | 7718 | struct ui_out *uiout = current_uiout; |
348d480f | 7719 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
7720 | /* These are needed because we want to know in which state a |
7721 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
7722 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
7723 | must print "called syscall" or "returned from syscall". */ | |
7724 | ptid_t ptid; | |
7725 | struct target_waitstatus last; | |
7726 | struct syscall s; | |
a96d9b2e SDJ |
7727 | char *syscall_id; |
7728 | ||
7729 | get_last_target_status (&ptid, &last); | |
7730 | ||
7731 | get_syscall_by_number (last.value.syscall_number, &s); | |
7732 | ||
7733 | annotate_catchpoint (b->number); | |
7734 | ||
36dfb11c TT |
7735 | if (b->disposition == disp_del) |
7736 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 7737 | else |
36dfb11c TT |
7738 | ui_out_text (uiout, "\nCatchpoint "); |
7739 | if (ui_out_is_mi_like_p (uiout)) | |
7740 | { | |
7741 | ui_out_field_string (uiout, "reason", | |
7742 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
7743 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
7744 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
7745 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7746 | } | |
7747 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
7748 | |
7749 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
7750 | ui_out_text (uiout, " (call to syscall "); |
7751 | else | |
7752 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 7753 | |
36dfb11c TT |
7754 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
7755 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
7756 | if (s.name != NULL) | |
7757 | ui_out_field_string (uiout, "syscall-name", s.name); | |
7758 | ||
7759 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
7760 | |
7761 | return PRINT_SRC_AND_LOC; | |
7762 | } | |
7763 | ||
7764 | /* Implement the "print_one" breakpoint_ops method for syscall | |
7765 | catchpoints. */ | |
7766 | ||
7767 | static void | |
7768 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 7769 | struct bp_location **last_loc) |
a96d9b2e | 7770 | { |
be5c67c1 | 7771 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 7772 | struct value_print_options opts; |
79a45e25 | 7773 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
7774 | |
7775 | get_user_print_options (&opts); | |
4a64f543 MS |
7776 | /* Field 4, the address, is omitted (which makes the columns not |
7777 | line up too nicely with the headers, but the effect is relatively | |
7778 | readable). */ | |
a96d9b2e SDJ |
7779 | if (opts.addressprint) |
7780 | ui_out_field_skip (uiout, "addr"); | |
7781 | annotate_field (5); | |
7782 | ||
be5c67c1 PA |
7783 | if (c->syscalls_to_be_caught |
7784 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
7785 | ui_out_text (uiout, "syscalls \""); |
7786 | else | |
7787 | ui_out_text (uiout, "syscall \""); | |
7788 | ||
be5c67c1 | 7789 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
7790 | { |
7791 | int i, iter; | |
7792 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 7793 | |
a96d9b2e | 7794 | for (i = 0; |
be5c67c1 | 7795 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7796 | i++) |
7797 | { | |
7798 | char *x = text; | |
7799 | struct syscall s; | |
7800 | get_syscall_by_number (iter, &s); | |
7801 | ||
7802 | if (s.name != NULL) | |
7803 | text = xstrprintf ("%s%s, ", text, s.name); | |
7804 | else | |
7805 | text = xstrprintf ("%s%d, ", text, iter); | |
7806 | ||
7807 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 7808 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
7809 | on every call. */ |
7810 | xfree (x); | |
7811 | } | |
7812 | /* Remove the last comma. */ | |
7813 | text[strlen (text) - 2] = '\0'; | |
7814 | ui_out_field_string (uiout, "what", text); | |
7815 | } | |
7816 | else | |
7817 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
7818 | ui_out_text (uiout, "\" "); | |
7819 | } | |
7820 | ||
7821 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
7822 | catchpoints. */ | |
7823 | ||
7824 | static void | |
7825 | print_mention_catch_syscall (struct breakpoint *b) | |
7826 | { | |
be5c67c1 PA |
7827 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
7828 | ||
7829 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
7830 | { |
7831 | int i, iter; | |
7832 | ||
be5c67c1 | 7833 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
7834 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
7835 | else | |
7836 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
7837 | ||
7838 | for (i = 0; | |
be5c67c1 | 7839 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7840 | i++) |
7841 | { | |
7842 | struct syscall s; | |
7843 | get_syscall_by_number (iter, &s); | |
7844 | ||
7845 | if (s.name) | |
7846 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
7847 | else | |
7848 | printf_filtered (" %d", s.number); | |
7849 | } | |
7850 | printf_filtered (")"); | |
7851 | } | |
7852 | else | |
7853 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
7854 | b->number); | |
7855 | } | |
7856 | ||
6149aea9 PA |
7857 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
7858 | catchpoints. */ | |
7859 | ||
7860 | static void | |
7861 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
7862 | { | |
be5c67c1 PA |
7863 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
7864 | ||
6149aea9 PA |
7865 | fprintf_unfiltered (fp, "catch syscall"); |
7866 | ||
be5c67c1 | 7867 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
7868 | { |
7869 | int i, iter; | |
7870 | ||
7871 | for (i = 0; | |
be5c67c1 | 7872 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
7873 | i++) |
7874 | { | |
7875 | struct syscall s; | |
7876 | ||
7877 | get_syscall_by_number (iter, &s); | |
7878 | if (s.name) | |
7879 | fprintf_unfiltered (fp, " %s", s.name); | |
7880 | else | |
7881 | fprintf_unfiltered (fp, " %d", s.number); | |
7882 | } | |
7883 | } | |
d9b3f62e | 7884 | print_recreate_thread (b, fp); |
6149aea9 PA |
7885 | } |
7886 | ||
a96d9b2e SDJ |
7887 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
7888 | ||
2060206e | 7889 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
7890 | |
7891 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
7892 | ||
7893 | static int | |
7894 | syscall_catchpoint_p (struct breakpoint *b) | |
7895 | { | |
7896 | return (b->ops == &catch_syscall_breakpoint_ops); | |
7897 | } | |
7898 | ||
346774a9 PA |
7899 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
7900 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
7901 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
7902 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 7903 | |
346774a9 PA |
7904 | static void |
7905 | init_catchpoint (struct breakpoint *b, | |
7906 | struct gdbarch *gdbarch, int tempflag, | |
7907 | char *cond_string, | |
c0a91b2b | 7908 | const struct breakpoint_ops *ops) |
c906108c | 7909 | { |
c5aa993b | 7910 | struct symtab_and_line sal; |
346774a9 | 7911 | |
fe39c653 | 7912 | init_sal (&sal); |
6c95b8df | 7913 | sal.pspace = current_program_space; |
c5aa993b | 7914 | |
28010a5d | 7915 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 7916 | |
1b36a34b | 7917 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 7918 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
7919 | } |
7920 | ||
28010a5d | 7921 | void |
3ea46bff | 7922 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
7923 | { |
7924 | add_to_breakpoint_chain (b); | |
3a5c3e22 PA |
7925 | set_breakpoint_number (internal, b); |
7926 | if (!internal) | |
7927 | mention (b); | |
c56053d2 | 7928 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
7929 | |
7930 | if (update_gll) | |
7931 | update_global_location_list (1); | |
c56053d2 PA |
7932 | } |
7933 | ||
9b70b993 | 7934 | static void |
a6d9a66e UW |
7935 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
7936 | int tempflag, char *cond_string, | |
c0a91b2b | 7937 | const struct breakpoint_ops *ops) |
c906108c | 7938 | { |
e29a4733 | 7939 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 7940 | |
e29a4733 PA |
7941 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
7942 | ||
7943 | c->forked_inferior_pid = null_ptid; | |
7944 | ||
3ea46bff | 7945 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
7946 | } |
7947 | ||
fe798b75 JB |
7948 | /* Exec catchpoints. */ |
7949 | ||
b4d90040 PA |
7950 | /* An instance of this type is used to represent an exec catchpoint. |
7951 | It includes a "struct breakpoint" as a kind of base class; users | |
7952 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7953 | really of this type iff its ops pointer points to | |
7954 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
7955 | ||
7956 | struct exec_catchpoint | |
7957 | { | |
7958 | /* The base class. */ | |
7959 | struct breakpoint base; | |
7960 | ||
7961 | /* Filename of a program whose exec triggered this catchpoint. | |
7962 | This field is only valid immediately after this catchpoint has | |
7963 | triggered. */ | |
7964 | char *exec_pathname; | |
7965 | }; | |
7966 | ||
7967 | /* Implement the "dtor" breakpoint_ops method for exec | |
7968 | catchpoints. */ | |
7969 | ||
7970 | static void | |
7971 | dtor_catch_exec (struct breakpoint *b) | |
7972 | { | |
7973 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
7974 | ||
7975 | xfree (c->exec_pathname); | |
348d480f | 7976 | |
2060206e | 7977 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
7978 | } |
7979 | ||
77b06cd7 TJB |
7980 | static int |
7981 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 7982 | { |
77b06cd7 | 7983 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 7984 | } |
c906108c | 7985 | |
fe798b75 | 7986 | static int |
77b06cd7 | 7987 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
7988 | { |
7989 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
7990 | } | |
c906108c | 7991 | |
fe798b75 | 7992 | static int |
f1310107 | 7993 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
7994 | struct address_space *aspace, CORE_ADDR bp_addr, |
7995 | const struct target_waitstatus *ws) | |
fe798b75 | 7996 | { |
b4d90040 PA |
7997 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
7998 | ||
f90263c1 TT |
7999 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8000 | return 0; | |
8001 | ||
8002 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8003 | return 1; | |
fe798b75 | 8004 | } |
c906108c | 8005 | |
fe798b75 | 8006 | static enum print_stop_action |
348d480f | 8007 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8008 | { |
36dfb11c | 8009 | struct ui_out *uiout = current_uiout; |
348d480f | 8010 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8011 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8012 | ||
fe798b75 | 8013 | annotate_catchpoint (b->number); |
36dfb11c TT |
8014 | if (b->disposition == disp_del) |
8015 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8016 | else | |
8017 | ui_out_text (uiout, "\nCatchpoint "); | |
8018 | if (ui_out_is_mi_like_p (uiout)) | |
8019 | { | |
8020 | ui_out_field_string (uiout, "reason", | |
8021 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8022 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8023 | } | |
8024 | ui_out_field_int (uiout, "bkptno", b->number); | |
8025 | ui_out_text (uiout, " (exec'd "); | |
8026 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8027 | ui_out_text (uiout, "), "); | |
8028 | ||
fe798b75 | 8029 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8030 | } |
8031 | ||
fe798b75 | 8032 | static void |
a6d9a66e | 8033 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8034 | { |
b4d90040 | 8035 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8036 | struct value_print_options opts; |
79a45e25 | 8037 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8038 | |
8039 | get_user_print_options (&opts); | |
8040 | ||
8041 | /* Field 4, the address, is omitted (which makes the columns | |
8042 | not line up too nicely with the headers, but the effect | |
8043 | is relatively readable). */ | |
8044 | if (opts.addressprint) | |
8045 | ui_out_field_skip (uiout, "addr"); | |
8046 | annotate_field (5); | |
8047 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8048 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8049 | { |
8050 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8051 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8052 | ui_out_text (uiout, "\" "); |
8053 | } | |
8054 | } | |
8055 | ||
8056 | static void | |
8057 | print_mention_catch_exec (struct breakpoint *b) | |
8058 | { | |
8059 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8060 | } | |
8061 | ||
6149aea9 PA |
8062 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8063 | catchpoints. */ | |
8064 | ||
8065 | static void | |
8066 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8067 | { | |
8068 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8069 | print_recreate_thread (b, fp); |
6149aea9 PA |
8070 | } |
8071 | ||
2060206e | 8072 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8073 | |
a96d9b2e SDJ |
8074 | static void |
8075 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 8076 | const struct breakpoint_ops *ops) |
a96d9b2e | 8077 | { |
be5c67c1 | 8078 | struct syscall_catchpoint *c; |
a96d9b2e | 8079 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 8080 | |
be5c67c1 PA |
8081 | c = XNEW (struct syscall_catchpoint); |
8082 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
8083 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 8084 | |
3ea46bff | 8085 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
8086 | } |
8087 | ||
c906108c | 8088 | static int |
fba45db2 | 8089 | hw_breakpoint_used_count (void) |
c906108c | 8090 | { |
c906108c | 8091 | int i = 0; |
f1310107 TJB |
8092 | struct breakpoint *b; |
8093 | struct bp_location *bl; | |
c906108c SS |
8094 | |
8095 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8096 | { |
d6b74ac4 | 8097 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8098 | for (bl = b->loc; bl; bl = bl->next) |
8099 | { | |
8100 | /* Special types of hardware breakpoints may use more than | |
8101 | one register. */ | |
348d480f | 8102 | i += b->ops->resources_needed (bl); |
f1310107 | 8103 | } |
c5aa993b | 8104 | } |
c906108c SS |
8105 | |
8106 | return i; | |
8107 | } | |
8108 | ||
a1398e0c PA |
8109 | /* Returns the resources B would use if it were a hardware |
8110 | watchpoint. */ | |
8111 | ||
c906108c | 8112 | static int |
a1398e0c | 8113 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8114 | { |
c906108c | 8115 | int i = 0; |
e09342b5 | 8116 | struct bp_location *bl; |
c906108c | 8117 | |
a1398e0c PA |
8118 | if (!breakpoint_enabled (b)) |
8119 | return 0; | |
8120 | ||
8121 | for (bl = b->loc; bl; bl = bl->next) | |
8122 | { | |
8123 | /* Special types of hardware watchpoints may use more than | |
8124 | one register. */ | |
8125 | i += b->ops->resources_needed (bl); | |
8126 | } | |
8127 | ||
8128 | return i; | |
8129 | } | |
8130 | ||
8131 | /* Returns the sum the used resources of all hardware watchpoints of | |
8132 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8133 | the sum of the used resources of all hardware watchpoints of other | |
8134 | types _not_ TYPE. */ | |
8135 | ||
8136 | static int | |
8137 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8138 | enum bptype type, int *other_type_used) | |
8139 | { | |
8140 | int i = 0; | |
8141 | struct breakpoint *b; | |
8142 | ||
c906108c SS |
8143 | *other_type_used = 0; |
8144 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8145 | { |
a1398e0c PA |
8146 | if (b == except) |
8147 | continue; | |
e09342b5 TJB |
8148 | if (!breakpoint_enabled (b)) |
8149 | continue; | |
8150 | ||
a1398e0c PA |
8151 | if (b->type == type) |
8152 | i += hw_watchpoint_use_count (b); | |
8153 | else if (is_hardware_watchpoint (b)) | |
8154 | *other_type_used = 1; | |
e09342b5 TJB |
8155 | } |
8156 | ||
c906108c SS |
8157 | return i; |
8158 | } | |
8159 | ||
c906108c | 8160 | void |
fba45db2 | 8161 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8162 | { |
c5aa993b | 8163 | struct breakpoint *b; |
c906108c SS |
8164 | |
8165 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8166 | { |
cc60f2e3 | 8167 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8168 | { |
b5de0fa7 | 8169 | b->enable_state = bp_call_disabled; |
b60e7edf | 8170 | update_global_location_list (0); |
c5aa993b JM |
8171 | } |
8172 | } | |
c906108c SS |
8173 | } |
8174 | ||
8175 | void | |
fba45db2 | 8176 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8177 | { |
c5aa993b | 8178 | struct breakpoint *b; |
c906108c SS |
8179 | |
8180 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8181 | { |
cc60f2e3 | 8182 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8183 | { |
b5de0fa7 | 8184 | b->enable_state = bp_enabled; |
b60e7edf | 8185 | update_global_location_list (1); |
c5aa993b JM |
8186 | } |
8187 | } | |
c906108c SS |
8188 | } |
8189 | ||
8bea4e01 UW |
8190 | void |
8191 | disable_breakpoints_before_startup (void) | |
8192 | { | |
6c95b8df | 8193 | current_program_space->executing_startup = 1; |
f8eba3c6 | 8194 | update_global_location_list (0); |
8bea4e01 UW |
8195 | } |
8196 | ||
8197 | void | |
8198 | enable_breakpoints_after_startup (void) | |
8199 | { | |
6c95b8df | 8200 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8201 | breakpoint_re_set (); |
8bea4e01 UW |
8202 | } |
8203 | ||
c906108c SS |
8204 | |
8205 | /* Set a breakpoint that will evaporate an end of command | |
8206 | at address specified by SAL. | |
8207 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
8208 | ||
8209 | struct breakpoint * | |
a6d9a66e UW |
8210 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8211 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8212 | { |
52f0bd74 | 8213 | struct breakpoint *b; |
edb3359d DJ |
8214 | |
8215 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
8216 | one. */ | |
8217 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
8218 | ||
06edf0c0 | 8219 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8220 | b->enable_state = bp_enabled; |
8221 | b->disposition = disp_donttouch; | |
818dd999 | 8222 | b->frame_id = frame_id; |
c906108c | 8223 | |
4a64f543 MS |
8224 | /* If we're debugging a multi-threaded program, then we want |
8225 | momentary breakpoints to be active in only a single thread of | |
8226 | control. */ | |
39f77062 KB |
8227 | if (in_thread_list (inferior_ptid)) |
8228 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8229 | |
b60e7edf | 8230 | update_global_location_list_nothrow (1); |
74960c60 | 8231 | |
c906108c SS |
8232 | return b; |
8233 | } | |
611c83ae | 8234 | |
06edf0c0 PA |
8235 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
8236 | The new breakpoint will have type TYPE, and use OPS as it | |
8237 | breakpoint_ops. */ | |
e58b0e63 | 8238 | |
06edf0c0 PA |
8239 | static struct breakpoint * |
8240 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8241 | enum bptype type, | |
c0a91b2b | 8242 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
8243 | { |
8244 | struct breakpoint *copy; | |
8245 | ||
06edf0c0 | 8246 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8247 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8248 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8249 | |
a6d9a66e | 8250 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8251 | copy->loc->requested_address = orig->loc->requested_address; |
8252 | copy->loc->address = orig->loc->address; | |
8253 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8254 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8255 | copy->loc->probe = orig->loc->probe; |
e58b0e63 | 8256 | |
f8eba3c6 TT |
8257 | if (orig->loc->source_file != NULL) |
8258 | copy->loc->source_file = xstrdup (orig->loc->source_file); | |
e58b0e63 | 8259 | |
f8eba3c6 | 8260 | copy->loc->line_number = orig->loc->line_number; |
e58b0e63 PA |
8261 | copy->frame_id = orig->frame_id; |
8262 | copy->thread = orig->thread; | |
6c95b8df | 8263 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8264 | |
8265 | copy->enable_state = bp_enabled; | |
8266 | copy->disposition = disp_donttouch; | |
8267 | copy->number = internal_breakpoint_number--; | |
8268 | ||
8269 | update_global_location_list_nothrow (0); | |
8270 | return copy; | |
8271 | } | |
8272 | ||
06edf0c0 PA |
8273 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8274 | ORIG is NULL. */ | |
8275 | ||
8276 | struct breakpoint * | |
8277 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8278 | { | |
8279 | /* If there's nothing to clone, then return nothing. */ | |
8280 | if (orig == NULL) | |
8281 | return NULL; | |
8282 | ||
8283 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
8284 | } | |
8285 | ||
611c83ae | 8286 | struct breakpoint * |
a6d9a66e UW |
8287 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8288 | enum bptype type) | |
611c83ae PA |
8289 | { |
8290 | struct symtab_and_line sal; | |
8291 | ||
8292 | sal = find_pc_line (pc, 0); | |
8293 | sal.pc = pc; | |
8294 | sal.section = find_pc_overlay (pc); | |
8295 | sal.explicit_pc = 1; | |
8296 | ||
a6d9a66e | 8297 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8298 | } |
c906108c | 8299 | \f |
c5aa993b | 8300 | |
c906108c SS |
8301 | /* Tell the user we have just set a breakpoint B. */ |
8302 | ||
8303 | static void | |
fba45db2 | 8304 | mention (struct breakpoint *b) |
c906108c | 8305 | { |
348d480f | 8306 | b->ops->print_mention (b); |
79a45e25 | 8307 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8308 | return; |
c906108c SS |
8309 | printf_filtered ("\n"); |
8310 | } | |
c906108c | 8311 | \f |
c5aa993b | 8312 | |
0d381245 | 8313 | static struct bp_location * |
39d61571 | 8314 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8315 | const struct symtab_and_line *sal) |
8316 | { | |
8317 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8318 | CORE_ADDR adjusted_address; |
8319 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8320 | ||
8321 | if (loc_gdbarch == NULL) | |
8322 | loc_gdbarch = b->gdbarch; | |
8323 | ||
8324 | /* Adjust the breakpoint's address prior to allocating a location. | |
8325 | Once we call allocate_bp_location(), that mostly uninitialized | |
8326 | location will be placed on the location chain. Adjustment of the | |
8327 | breakpoint may cause target_read_memory() to be called and we do | |
8328 | not want its scan of the location chain to find a breakpoint and | |
8329 | location that's only been partially initialized. */ | |
8330 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8331 | sal->pc, b->type); | |
0d381245 | 8332 | |
39d61571 | 8333 | loc = allocate_bp_location (b); |
0d381245 VP |
8334 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
8335 | ; | |
8336 | *tmp = loc; | |
3742cc8b | 8337 | |
0d381245 | 8338 | loc->requested_address = sal->pc; |
3742cc8b | 8339 | loc->address = adjusted_address; |
6c95b8df | 8340 | loc->pspace = sal->pspace; |
55aa24fb | 8341 | loc->probe = sal->probe; |
6c95b8df | 8342 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8343 | loc->section = sal->section; |
3742cc8b | 8344 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 TT |
8345 | |
8346 | if (sal->symtab != NULL) | |
8347 | loc->source_file = xstrdup (sal->symtab->filename); | |
8348 | loc->line_number = sal->line; | |
8349 | ||
0e30163f JK |
8350 | set_breakpoint_location_function (loc, |
8351 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
8352 | return loc; |
8353 | } | |
514f746b AR |
8354 | \f |
8355 | ||
8356 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8357 | return 0 otherwise. */ | |
8358 | ||
8359 | static int | |
8360 | bp_loc_is_permanent (struct bp_location *loc) | |
8361 | { | |
8362 | int len; | |
8363 | CORE_ADDR addr; | |
1afeeb75 | 8364 | const gdb_byte *bpoint; |
514f746b | 8365 | gdb_byte *target_mem; |
939c61fa JK |
8366 | struct cleanup *cleanup; |
8367 | int retval = 0; | |
514f746b AR |
8368 | |
8369 | gdb_assert (loc != NULL); | |
8370 | ||
8371 | addr = loc->address; | |
1afeeb75 | 8372 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 8373 | |
939c61fa | 8374 | /* Software breakpoints unsupported? */ |
1afeeb75 | 8375 | if (bpoint == NULL) |
939c61fa JK |
8376 | return 0; |
8377 | ||
514f746b AR |
8378 | target_mem = alloca (len); |
8379 | ||
939c61fa JK |
8380 | /* Enable the automatic memory restoration from breakpoints while |
8381 | we read the memory. Otherwise we could say about our temporary | |
8382 | breakpoints they are permanent. */ | |
6c95b8df PA |
8383 | cleanup = save_current_space_and_thread (); |
8384 | ||
8385 | switch_to_program_space_and_thread (loc->pspace); | |
8386 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 8387 | |
514f746b | 8388 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 8389 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 8390 | retval = 1; |
514f746b | 8391 | |
939c61fa JK |
8392 | do_cleanups (cleanup); |
8393 | ||
8394 | return retval; | |
514f746b AR |
8395 | } |
8396 | ||
e7e0cddf SS |
8397 | /* The style in which to perform a dynamic printf. This is a user |
8398 | option because different output options have different tradeoffs; | |
8399 | if GDB does the printing, there is better error handling if there | |
8400 | is a problem with any of the arguments, but using an inferior | |
8401 | function lets you have special-purpose printers and sending of | |
8402 | output to the same place as compiled-in print functions. (Future | |
8403 | styles may include the ability to do a target-side printf.) */ | |
8404 | ||
8405 | static const char dprintf_style_gdb[] = "gdb"; | |
8406 | static const char dprintf_style_call[] = "call"; | |
8407 | static const char *const dprintf_style_enums[] = { | |
8408 | dprintf_style_gdb, | |
8409 | dprintf_style_call, | |
8410 | NULL | |
8411 | }; | |
8412 | static const char *dprintf_style = dprintf_style_gdb; | |
8413 | ||
8414 | /* The function to use for dynamic printf if the preferred style is to | |
8415 | call into the inferior. The value is simply a string that is | |
8416 | copied into the command, so it can be anything that GDB can | |
8417 | evaluate to a callable address, not necessarily a function name. */ | |
8418 | ||
8419 | static char *dprintf_function = ""; | |
8420 | ||
8421 | /* The channel to use for dynamic printf if the preferred style is to | |
8422 | call into the inferior; if a nonempty string, it will be passed to | |
8423 | the call as the first argument, with the format string as the | |
8424 | second. As with the dprintf function, this can be anything that | |
8425 | GDB knows how to evaluate, so in addition to common choices like | |
8426 | "stderr", this could be an app-specific expression like | |
8427 | "mystreams[curlogger]". */ | |
514f746b | 8428 | |
e7e0cddf SS |
8429 | static char *dprintf_channel = ""; |
8430 | ||
8431 | /* Build a command list for the dprintf corresponding to the current | |
8432 | settings of the dprintf style options. */ | |
8433 | ||
8434 | static void | |
8435 | update_dprintf_command_list (struct breakpoint *b) | |
8436 | { | |
8437 | char *dprintf_args = b->extra_string; | |
8438 | char *printf_line = NULL; | |
8439 | ||
8440 | if (!dprintf_args) | |
8441 | return; | |
8442 | ||
8443 | dprintf_args = skip_spaces (dprintf_args); | |
8444 | ||
8445 | /* Allow a comma, as it may have terminated a location, but don't | |
8446 | insist on it. */ | |
8447 | if (*dprintf_args == ',') | |
8448 | ++dprintf_args; | |
8449 | dprintf_args = skip_spaces (dprintf_args); | |
8450 | ||
8451 | if (*dprintf_args != '"') | |
8452 | error (_("Bad format string, missing '\"'.")); | |
8453 | ||
8454 | if (strcmp (dprintf_style, "gdb") == 0) | |
8455 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8456 | else if (strcmp (dprintf_style, "call") == 0) | |
8457 | { | |
8458 | if (!dprintf_function) | |
8459 | error (_("No function supplied for dprintf call")); | |
8460 | ||
8461 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8462 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8463 | dprintf_function, | |
8464 | dprintf_channel, | |
8465 | dprintf_args); | |
8466 | else | |
8467 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8468 | dprintf_function, | |
8469 | dprintf_args); | |
8470 | } | |
8471 | else | |
8472 | internal_error (__FILE__, __LINE__, | |
8473 | _("Invalid dprintf style.")); | |
8474 | ||
8475 | /* Manufacture a printf/continue sequence. */ | |
8476 | if (printf_line) | |
8477 | { | |
8478 | struct command_line *printf_cmd_line, *cont_cmd_line = NULL; | |
8479 | ||
8480 | cont_cmd_line = xmalloc (sizeof (struct command_line)); | |
8481 | cont_cmd_line->control_type = simple_control; | |
8482 | cont_cmd_line->body_count = 0; | |
8483 | cont_cmd_line->body_list = NULL; | |
8484 | cont_cmd_line->next = NULL; | |
8485 | cont_cmd_line->line = xstrdup ("continue"); | |
8486 | ||
8487 | printf_cmd_line = xmalloc (sizeof (struct command_line)); | |
8488 | printf_cmd_line->control_type = simple_control; | |
8489 | printf_cmd_line->body_count = 0; | |
8490 | printf_cmd_line->body_list = NULL; | |
8491 | printf_cmd_line->next = cont_cmd_line; | |
8492 | printf_cmd_line->line = printf_line; | |
8493 | ||
8494 | breakpoint_set_commands (b, printf_cmd_line); | |
8495 | } | |
8496 | } | |
8497 | ||
8498 | /* Update all dprintf commands, making their command lists reflect | |
8499 | current style settings. */ | |
8500 | ||
8501 | static void | |
8502 | update_dprintf_commands (char *args, int from_tty, | |
8503 | struct cmd_list_element *c) | |
8504 | { | |
8505 | struct breakpoint *b; | |
8506 | ||
8507 | ALL_BREAKPOINTS (b) | |
8508 | { | |
8509 | if (b->type == bp_dprintf) | |
8510 | update_dprintf_command_list (b); | |
8511 | } | |
8512 | } | |
c3f6f71d | 8513 | |
018d34a4 VP |
8514 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
8515 | as textual description of the location, and COND_STRING | |
db107f19 | 8516 | as condition expression. */ |
018d34a4 VP |
8517 | |
8518 | static void | |
d9b3f62e PA |
8519 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
8520 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8521 | char *filter, char *cond_string, |
e7e0cddf | 8522 | char *extra_string, |
d9b3f62e PA |
8523 | enum bptype type, enum bpdisp disposition, |
8524 | int thread, int task, int ignore_count, | |
c0a91b2b | 8525 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8526 | int enabled, int internal, unsigned flags, |
8527 | int display_canonical) | |
018d34a4 | 8528 | { |
0d381245 | 8529 | int i; |
018d34a4 VP |
8530 | |
8531 | if (type == bp_hardware_breakpoint) | |
8532 | { | |
fbbd034e AS |
8533 | int target_resources_ok; |
8534 | ||
8535 | i = hw_breakpoint_used_count (); | |
8536 | target_resources_ok = | |
8537 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8538 | i + 1, 0); |
8539 | if (target_resources_ok == 0) | |
8540 | error (_("No hardware breakpoint support in the target.")); | |
8541 | else if (target_resources_ok < 0) | |
8542 | error (_("Hardware breakpoints used exceeds limit.")); | |
8543 | } | |
8544 | ||
6c95b8df PA |
8545 | gdb_assert (sals.nelts > 0); |
8546 | ||
0d381245 VP |
8547 | for (i = 0; i < sals.nelts; ++i) |
8548 | { | |
8549 | struct symtab_and_line sal = sals.sals[i]; | |
8550 | struct bp_location *loc; | |
8551 | ||
8552 | if (from_tty) | |
5af949e3 UW |
8553 | { |
8554 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8555 | if (!loc_gdbarch) | |
8556 | loc_gdbarch = gdbarch; | |
8557 | ||
8558 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8559 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8560 | } |
0d381245 VP |
8561 | |
8562 | if (i == 0) | |
8563 | { | |
d9b3f62e | 8564 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8565 | b->thread = thread; |
4a306c9a | 8566 | b->task = task; |
018d34a4 | 8567 | |
0d381245 | 8568 | b->cond_string = cond_string; |
e7e0cddf | 8569 | b->extra_string = extra_string; |
0d381245 | 8570 | b->ignore_count = ignore_count; |
41447f92 | 8571 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8572 | b->disposition = disposition; |
6c95b8df | 8573 | |
44f238bb PA |
8574 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8575 | b->loc->inserted = 1; | |
8576 | ||
0fb4aa4b PA |
8577 | if (type == bp_static_tracepoint) |
8578 | { | |
d9b3f62e | 8579 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8580 | struct static_tracepoint_marker marker; |
8581 | ||
983af33b | 8582 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8583 | { |
8584 | /* We already know the marker exists, otherwise, we | |
8585 | wouldn't see a sal for it. */ | |
8586 | char *p = &addr_string[3]; | |
8587 | char *endp; | |
8588 | char *marker_str; | |
0fb4aa4b | 8589 | |
e9cafbcc | 8590 | p = skip_spaces (p); |
0fb4aa4b | 8591 | |
e9cafbcc | 8592 | endp = skip_to_space (p); |
0fb4aa4b PA |
8593 | |
8594 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 8595 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 8596 | |
3e43a32a MS |
8597 | printf_filtered (_("Probed static tracepoint " |
8598 | "marker \"%s\"\n"), | |
d9b3f62e | 8599 | t->static_trace_marker_id); |
0fb4aa4b PA |
8600 | } |
8601 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8602 | { | |
d9b3f62e | 8603 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
8604 | release_static_tracepoint_marker (&marker); |
8605 | ||
3e43a32a MS |
8606 | printf_filtered (_("Probed static tracepoint " |
8607 | "marker \"%s\"\n"), | |
d9b3f62e | 8608 | t->static_trace_marker_id); |
0fb4aa4b PA |
8609 | } |
8610 | else | |
3e43a32a MS |
8611 | warning (_("Couldn't determine the static " |
8612 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8613 | } |
8614 | ||
0d381245 VP |
8615 | loc = b->loc; |
8616 | } | |
8617 | else | |
018d34a4 | 8618 | { |
39d61571 | 8619 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8620 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8621 | loc->inserted = 1; | |
0d381245 VP |
8622 | } |
8623 | ||
514f746b AR |
8624 | if (bp_loc_is_permanent (loc)) |
8625 | make_breakpoint_permanent (b); | |
8626 | ||
0d381245 VP |
8627 | if (b->cond_string) |
8628 | { | |
8629 | char *arg = b->cond_string; | |
d32a6982 | 8630 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 8631 | if (*arg) |
db107f19 | 8632 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 8633 | } |
e7e0cddf SS |
8634 | |
8635 | /* Dynamic printf requires and uses additional arguments on the | |
8636 | command line, otherwise it's an error. */ | |
8637 | if (type == bp_dprintf) | |
8638 | { | |
8639 | if (b->extra_string) | |
8640 | update_dprintf_command_list (b); | |
8641 | else | |
8642 | error (_("Format string required")); | |
8643 | } | |
8644 | else if (b->extra_string) | |
8645 | error (_("Garbage %s at end of command"), b->extra_string); | |
0d381245 | 8646 | } |
018d34a4 | 8647 | |
56435ebe | 8648 | b->display_canonical = display_canonical; |
018d34a4 VP |
8649 | if (addr_string) |
8650 | b->addr_string = addr_string; | |
8651 | else | |
8652 | /* addr_string has to be used or breakpoint_re_set will delete | |
8653 | me. */ | |
5af949e3 UW |
8654 | b->addr_string |
8655 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 8656 | b->filter = filter; |
d9b3f62e | 8657 | } |
018d34a4 | 8658 | |
d9b3f62e PA |
8659 | static void |
8660 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
8661 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8662 | char *filter, char *cond_string, |
e7e0cddf | 8663 | char *extra_string, |
d9b3f62e PA |
8664 | enum bptype type, enum bpdisp disposition, |
8665 | int thread, int task, int ignore_count, | |
c0a91b2b | 8666 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8667 | int enabled, int internal, unsigned flags, |
8668 | int display_canonical) | |
d9b3f62e PA |
8669 | { |
8670 | struct breakpoint *b; | |
8671 | struct cleanup *old_chain; | |
8672 | ||
8673 | if (is_tracepoint_type (type)) | |
8674 | { | |
8675 | struct tracepoint *t; | |
8676 | ||
8677 | t = XCNEW (struct tracepoint); | |
8678 | b = &t->base; | |
8679 | } | |
8680 | else | |
8681 | b = XNEW (struct breakpoint); | |
8682 | ||
8683 | old_chain = make_cleanup (xfree, b); | |
8684 | ||
8685 | init_breakpoint_sal (b, gdbarch, | |
8686 | sals, addr_string, | |
e7e0cddf | 8687 | filter, cond_string, extra_string, |
d9b3f62e PA |
8688 | type, disposition, |
8689 | thread, task, ignore_count, | |
8690 | ops, from_tty, | |
44f238bb PA |
8691 | enabled, internal, flags, |
8692 | display_canonical); | |
d9b3f62e PA |
8693 | discard_cleanups (old_chain); |
8694 | ||
3ea46bff | 8695 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
8696 | } |
8697 | ||
8698 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
8699 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
8700 | value. COND_STRING, if not NULL, specified the condition to be | |
8701 | used for all breakpoints. Essentially the only case where | |
8702 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
8703 | function. In that case, it's still not possible to specify | |
8704 | separate conditions for different overloaded functions, so | |
8705 | we take just a single condition string. | |
8706 | ||
c3f6f71d | 8707 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 8708 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
8709 | array contents). If the function fails (error() is called), the |
8710 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 8711 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
8712 | |
8713 | static void | |
8cdf0e15 | 8714 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 8715 | struct linespec_result *canonical, |
e7e0cddf | 8716 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
8717 | enum bptype type, enum bpdisp disposition, |
8718 | int thread, int task, int ignore_count, | |
c0a91b2b | 8719 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 8720 | int enabled, int internal, unsigned flags) |
c906108c | 8721 | { |
018d34a4 | 8722 | int i; |
f8eba3c6 | 8723 | struct linespec_sals *lsal; |
cc59ec59 | 8724 | |
f8eba3c6 TT |
8725 | if (canonical->pre_expanded) |
8726 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
8727 | ||
8728 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 8729 | { |
f8eba3c6 TT |
8730 | /* Note that 'addr_string' can be NULL in the case of a plain |
8731 | 'break', without arguments. */ | |
8732 | char *addr_string = (canonical->addr_string | |
8733 | ? xstrdup (canonical->addr_string) | |
8734 | : NULL); | |
8735 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
8736 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 8737 | |
f8eba3c6 TT |
8738 | make_cleanup (xfree, filter_string); |
8739 | create_breakpoint_sal (gdbarch, lsal->sals, | |
8740 | addr_string, | |
8741 | filter_string, | |
e7e0cddf SS |
8742 | cond_string, extra_string, |
8743 | type, disposition, | |
84f4c1fe | 8744 | thread, task, ignore_count, ops, |
44f238bb | 8745 | from_tty, enabled, internal, flags, |
56435ebe | 8746 | canonical->special_display); |
f8eba3c6 | 8747 | discard_cleanups (inner); |
c3f6f71d | 8748 | } |
c3f6f71d | 8749 | } |
c906108c | 8750 | |
9998af43 | 8751 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 8752 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 8753 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
8754 | address strings. ADDRESS points to the end of the SAL. |
8755 | ||
8756 | The array and the line spec strings are allocated on the heap, it is | |
8757 | the caller's responsibility to free them. */ | |
c906108c | 8758 | |
b9362cc7 | 8759 | static void |
c3f6f71d | 8760 | parse_breakpoint_sals (char **address, |
58438ac1 | 8761 | struct linespec_result *canonical) |
c3f6f71d JM |
8762 | { |
8763 | char *addr_start = *address; | |
cc59ec59 | 8764 | |
c3f6f71d | 8765 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 8766 | breakpoint. */ |
c3f6f71d JM |
8767 | if ((*address) == NULL |
8768 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 8769 | { |
1bfeeb0f JL |
8770 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
8771 | address. */ | |
8772 | if (last_displayed_sal_is_valid ()) | |
c906108c | 8773 | { |
f8eba3c6 | 8774 | struct linespec_sals lsal; |
c3f6f71d | 8775 | struct symtab_and_line sal; |
cc59ec59 | 8776 | |
4a64f543 | 8777 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 8778 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 8779 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
8780 | |
8781 | /* Set sal's pspace, pc, symtab, and line to the values | |
8782 | corresponding to the last call to print_frame_info. */ | |
8783 | get_last_displayed_sal (&sal); | |
8784 | sal.section = find_pc_overlay (sal.pc); | |
00903456 | 8785 | |
4a64f543 | 8786 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
8787 | where PC is the last displayed codepoint's address. So |
8788 | make sure to set sal.explicit_pc to prevent GDB from | |
8789 | trying to expand the list of sals to include all other | |
8790 | instances with the same symtab and line. */ | |
00903456 JK |
8791 | sal.explicit_pc = 1; |
8792 | ||
f8eba3c6 TT |
8793 | lsal.sals.sals[0] = sal; |
8794 | lsal.sals.nelts = 1; | |
8795 | lsal.canonical = NULL; | |
8796 | ||
8797 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
8798 | } |
8799 | else | |
8a3fe4f8 | 8800 | error (_("No default breakpoint address now.")); |
c906108c SS |
8801 | } |
8802 | else | |
8803 | { | |
c906108c | 8804 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
8805 | current_source_symtab (which is decode_line_1's default). |
8806 | This should produce the results we want almost all of the | |
f8eba3c6 TT |
8807 | time while leaving default_breakpoint_* alone. */ |
8808 | if (last_displayed_sal_is_valid ()) | |
8809 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, | |
8810 | get_last_displayed_symtab (), | |
8811 | get_last_displayed_line (), | |
8812 | canonical, NULL, NULL); | |
c906108c | 8813 | else |
f8eba3c6 TT |
8814 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
8815 | (struct symtab *) NULL, 0, | |
8816 | canonical, NULL, NULL); | |
c906108c | 8817 | } |
c3f6f71d | 8818 | } |
c906108c | 8819 | |
c906108c | 8820 | |
c3f6f71d | 8821 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 8822 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 8823 | |
b9362cc7 | 8824 | static void |
23e7acfb | 8825 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
8826 | { |
8827 | int i; | |
cc59ec59 | 8828 | |
c3f6f71d | 8829 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 8830 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
8831 | } |
8832 | ||
7a697b8d SS |
8833 | /* Fast tracepoints may have restrictions on valid locations. For |
8834 | instance, a fast tracepoint using a jump instead of a trap will | |
8835 | likely have to overwrite more bytes than a trap would, and so can | |
8836 | only be placed where the instruction is longer than the jump, or a | |
8837 | multi-instruction sequence does not have a jump into the middle of | |
8838 | it, etc. */ | |
8839 | ||
8840 | static void | |
8841 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
8842 | struct symtabs_and_lines *sals) | |
8843 | { | |
8844 | int i, rslt; | |
8845 | struct symtab_and_line *sal; | |
8846 | char *msg; | |
8847 | struct cleanup *old_chain; | |
8848 | ||
8849 | for (i = 0; i < sals->nelts; i++) | |
8850 | { | |
f8eba3c6 TT |
8851 | struct gdbarch *sarch; |
8852 | ||
7a697b8d SS |
8853 | sal = &sals->sals[i]; |
8854 | ||
f8eba3c6 TT |
8855 | sarch = get_sal_arch (*sal); |
8856 | /* We fall back to GDBARCH if there is no architecture | |
8857 | associated with SAL. */ | |
8858 | if (sarch == NULL) | |
8859 | sarch = gdbarch; | |
8860 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
8861 | NULL, &msg); |
8862 | old_chain = make_cleanup (xfree, msg); | |
8863 | ||
8864 | if (!rslt) | |
8865 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 8866 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
8867 | |
8868 | do_cleanups (old_chain); | |
8869 | } | |
8870 | } | |
8871 | ||
018d34a4 VP |
8872 | /* Given TOK, a string specification of condition and thread, as |
8873 | accepted by the 'break' command, extract the condition | |
8874 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 8875 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
8876 | If no condition is found, *COND_STRING is set to NULL. |
8877 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
8878 | |
8879 | static void | |
8880 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
e7e0cddf SS |
8881 | char **cond_string, int *thread, int *task, |
8882 | char **rest) | |
018d34a4 VP |
8883 | { |
8884 | *cond_string = NULL; | |
8885 | *thread = -1; | |
8886 | while (tok && *tok) | |
8887 | { | |
8888 | char *end_tok; | |
8889 | int toklen; | |
8890 | char *cond_start = NULL; | |
8891 | char *cond_end = NULL; | |
cc59ec59 | 8892 | |
e9cafbcc | 8893 | tok = skip_spaces (tok); |
e7e0cddf SS |
8894 | |
8895 | if ((*tok == '"' || *tok == ',') && rest) | |
8896 | { | |
8897 | *rest = savestring (tok, strlen (tok)); | |
8898 | return; | |
8899 | } | |
8900 | ||
e9cafbcc | 8901 | end_tok = skip_to_space (tok); |
d634f2de | 8902 | |
018d34a4 | 8903 | toklen = end_tok - tok; |
d634f2de | 8904 | |
018d34a4 VP |
8905 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
8906 | { | |
f7545552 TT |
8907 | struct expression *expr; |
8908 | ||
018d34a4 | 8909 | tok = cond_start = end_tok + 1; |
f7545552 TT |
8910 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
8911 | xfree (expr); | |
018d34a4 | 8912 | cond_end = tok; |
d634f2de | 8913 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
8914 | } |
8915 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
8916 | { | |
8917 | char *tmptok; | |
d634f2de | 8918 | |
018d34a4 VP |
8919 | tok = end_tok + 1; |
8920 | tmptok = tok; | |
8921 | *thread = strtol (tok, &tok, 0); | |
8922 | if (tok == tmptok) | |
8923 | error (_("Junk after thread keyword.")); | |
8924 | if (!valid_thread_id (*thread)) | |
8925 | error (_("Unknown thread %d."), *thread); | |
8926 | } | |
4a306c9a JB |
8927 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
8928 | { | |
8929 | char *tmptok; | |
8930 | ||
8931 | tok = end_tok + 1; | |
8932 | tmptok = tok; | |
8933 | *task = strtol (tok, &tok, 0); | |
8934 | if (tok == tmptok) | |
8935 | error (_("Junk after task keyword.")); | |
8936 | if (!valid_task_id (*task)) | |
b6199126 | 8937 | error (_("Unknown task %d."), *task); |
4a306c9a | 8938 | } |
e7e0cddf SS |
8939 | else if (rest) |
8940 | { | |
8941 | *rest = savestring (tok, strlen (tok)); | |
8942 | tok += toklen; | |
8943 | } | |
018d34a4 VP |
8944 | else |
8945 | error (_("Junk at end of arguments.")); | |
8946 | } | |
8947 | } | |
8948 | ||
0fb4aa4b PA |
8949 | /* Decode a static tracepoint marker spec. */ |
8950 | ||
8951 | static struct symtabs_and_lines | |
8952 | decode_static_tracepoint_spec (char **arg_p) | |
8953 | { | |
8954 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
8955 | struct symtabs_and_lines sals; | |
8956 | struct symtab_and_line sal; | |
8957 | struct symbol *sym; | |
8958 | struct cleanup *old_chain; | |
8959 | char *p = &(*arg_p)[3]; | |
8960 | char *endp; | |
8961 | char *marker_str; | |
8962 | int i; | |
8963 | ||
e9cafbcc | 8964 | p = skip_spaces (p); |
0fb4aa4b | 8965 | |
e9cafbcc | 8966 | endp = skip_to_space (p); |
0fb4aa4b PA |
8967 | |
8968 | marker_str = savestring (p, endp - p); | |
8969 | old_chain = make_cleanup (xfree, marker_str); | |
8970 | ||
8971 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
8972 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
8973 | error (_("No known static tracepoint marker named %s"), marker_str); | |
8974 | ||
8975 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
8976 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
8977 | ||
8978 | for (i = 0; i < sals.nelts; i++) | |
8979 | { | |
8980 | struct static_tracepoint_marker *marker; | |
8981 | ||
8982 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
8983 | ||
8984 | init_sal (&sals.sals[i]); | |
8985 | ||
8986 | sals.sals[i] = find_pc_line (marker->address, 0); | |
8987 | sals.sals[i].pc = marker->address; | |
8988 | ||
8989 | release_static_tracepoint_marker (marker); | |
8990 | } | |
8991 | ||
8992 | do_cleanups (old_chain); | |
8993 | ||
8994 | *arg_p = endp; | |
8995 | return sals; | |
8996 | } | |
8997 | ||
fd9b8c24 PA |
8998 | /* Set a breakpoint. This function is shared between CLI and MI |
8999 | functions for setting a breakpoint. This function has two major | |
9000 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
9001 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
9002 | breakpoint location, address and thread. Otherwise, ARG is just |
9003 | the location of breakpoint, with condition and thread specified by | |
9004 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
9005 | the breakpoint number will be allocated from the internal | |
9006 | breakpoint count. Returns true if any breakpoint was created; | |
9007 | false otherwise. */ | |
0101ce28 | 9008 | |
8cdf0e15 VP |
9009 | int |
9010 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9011 | char *arg, char *cond_string, |
9012 | int thread, char *extra_string, | |
8cdf0e15 | 9013 | int parse_condition_and_thread, |
0fb4aa4b | 9014 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9015 | int ignore_count, |
9016 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9017 | const struct breakpoint_ops *ops, |
44f238bb PA |
9018 | int from_tty, int enabled, int internal, |
9019 | unsigned flags) | |
c3f6f71d | 9020 | { |
b78a6381 | 9021 | volatile struct gdb_exception e; |
f8eba3c6 | 9022 | char *copy_arg = NULL; |
c3f6f71d | 9023 | char *addr_start = arg; |
7efd8fc2 | 9024 | struct linespec_result canonical; |
c3f6f71d | 9025 | struct cleanup *old_chain; |
80c99de1 | 9026 | struct cleanup *bkpt_chain = NULL; |
05ff989b | 9027 | int i; |
0101ce28 | 9028 | int pending = 0; |
4a306c9a | 9029 | int task = 0; |
86b17b60 | 9030 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9031 | |
348d480f PA |
9032 | gdb_assert (ops != NULL); |
9033 | ||
7efd8fc2 | 9034 | init_linespec_result (&canonical); |
c3f6f71d | 9035 | |
b78a6381 TT |
9036 | TRY_CATCH (e, RETURN_MASK_ALL) |
9037 | { | |
983af33b SDJ |
9038 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9039 | addr_start, ©_arg); | |
b78a6381 | 9040 | } |
0101ce28 JJ |
9041 | |
9042 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 9043 | switch (e.reason) |
0101ce28 | 9044 | { |
983af33b SDJ |
9045 | case GDB_NO_ERROR: |
9046 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9047 | return 0; | |
9048 | break; | |
05ff989b AC |
9049 | case RETURN_ERROR: |
9050 | switch (e.error) | |
0101ce28 | 9051 | { |
05ff989b | 9052 | case NOT_FOUND_ERROR: |
0101ce28 | 9053 | |
05ff989b AC |
9054 | /* If pending breakpoint support is turned off, throw |
9055 | error. */ | |
fa8d40ab JJ |
9056 | |
9057 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9058 | throw_exception (e); |
9059 | ||
9060 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9061 | |
05ff989b AC |
9062 | /* If pending breakpoint support is auto query and the user |
9063 | selects no, then simply return the error code. */ | |
059fb39f | 9064 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9065 | && !nquery (_("Make %s pending on future shared library load? "), |
9066 | bptype_string (type_wanted))) | |
fd9b8c24 | 9067 | return 0; |
fa8d40ab | 9068 | |
05ff989b AC |
9069 | /* At this point, either the user was queried about setting |
9070 | a pending breakpoint and selected yes, or pending | |
9071 | breakpoint behavior is on and thus a pending breakpoint | |
9072 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9073 | { |
9074 | struct linespec_sals lsal; | |
9075 | ||
9076 | copy_arg = xstrdup (addr_start); | |
9077 | lsal.canonical = xstrdup (copy_arg); | |
9078 | lsal.sals.nelts = 1; | |
9079 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9080 | init_sal (&lsal.sals.sals[0]); | |
9081 | pending = 1; | |
9082 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9083 | } | |
05ff989b AC |
9084 | break; |
9085 | default: | |
98deb0da | 9086 | throw_exception (e); |
0101ce28 | 9087 | } |
2abae994 | 9088 | break; |
05ff989b | 9089 | default: |
983af33b | 9090 | throw_exception (e); |
0101ce28 | 9091 | } |
c3f6f71d | 9092 | |
4a64f543 | 9093 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9094 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9095 | |
c3f6f71d JM |
9096 | /* ----------------------------- SNIP ----------------------------- |
9097 | Anything added to the cleanup chain beyond this point is assumed | |
9098 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9099 | then the memory is not reclaimed. */ |
9100 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9101 | |
c3f6f71d JM |
9102 | /* Resolve all line numbers to PC's and verify that the addresses |
9103 | are ok for the target. */ | |
0101ce28 | 9104 | if (!pending) |
f8eba3c6 TT |
9105 | { |
9106 | int ix; | |
9107 | struct linespec_sals *iter; | |
9108 | ||
9109 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9110 | breakpoint_sals_to_pc (&iter->sals); | |
9111 | } | |
c3f6f71d | 9112 | |
7a697b8d | 9113 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9114 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9115 | { |
9116 | int ix; | |
9117 | struct linespec_sals *iter; | |
9118 | ||
9119 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9120 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9121 | } | |
7a697b8d | 9122 | |
c3f6f71d JM |
9123 | /* Verify that condition can be parsed, before setting any |
9124 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9125 | breakpoint. */ |
0101ce28 | 9126 | if (!pending) |
c3f6f71d | 9127 | { |
f8eba3c6 TT |
9128 | struct linespec_sals *lsal; |
9129 | ||
9130 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9131 | ||
2f069f6f | 9132 | if (parse_condition_and_thread) |
72b2ff0e | 9133 | { |
e7e0cddf | 9134 | char *rest; |
72b2ff0e VP |
9135 | /* Here we only parse 'arg' to separate condition |
9136 | from thread number, so parsing in context of first | |
9137 | sal is OK. When setting the breakpoint we'll | |
9138 | re-parse it in context of each sal. */ | |
9139 | cond_string = NULL; | |
9140 | thread = -1; | |
e7e0cddf | 9141 | rest = NULL; |
f8eba3c6 | 9142 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
e7e0cddf | 9143 | &thread, &task, &rest); |
72b2ff0e VP |
9144 | if (cond_string) |
9145 | make_cleanup (xfree, cond_string); | |
e7e0cddf SS |
9146 | if (rest) |
9147 | make_cleanup (xfree, rest); | |
9148 | if (rest) | |
9149 | extra_string = rest; | |
72b2ff0e | 9150 | } |
2f069f6f | 9151 | else |
72b2ff0e VP |
9152 | { |
9153 | /* Create a private copy of condition string. */ | |
9154 | if (cond_string) | |
9155 | { | |
9156 | cond_string = xstrdup (cond_string); | |
9157 | make_cleanup (xfree, cond_string); | |
9158 | } | |
e7e0cddf SS |
9159 | /* Create a private copy of any extra string. */ |
9160 | if (extra_string) | |
9161 | { | |
9162 | extra_string = xstrdup (extra_string); | |
9163 | make_cleanup (xfree, extra_string); | |
9164 | } | |
72b2ff0e | 9165 | } |
0fb4aa4b | 9166 | |
983af33b | 9167 | ops->create_breakpoints_sal (gdbarch, &canonical, lsal, |
e7e0cddf | 9168 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9169 | tempflag ? disp_del : disp_donttouch, |
9170 | thread, task, ignore_count, ops, | |
44f238bb | 9171 | from_tty, enabled, internal, flags); |
c906108c | 9172 | } |
0101ce28 JJ |
9173 | else |
9174 | { | |
0101ce28 JJ |
9175 | struct breakpoint *b; |
9176 | ||
0101ce28 JJ |
9177 | make_cleanup (xfree, copy_arg); |
9178 | ||
bfccc43c YQ |
9179 | if (is_tracepoint_type (type_wanted)) |
9180 | { | |
9181 | struct tracepoint *t; | |
9182 | ||
9183 | t = XCNEW (struct tracepoint); | |
9184 | b = &t->base; | |
9185 | } | |
9186 | else | |
9187 | b = XNEW (struct breakpoint); | |
9188 | ||
9189 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9190 | ||
f8eba3c6 | 9191 | b->addr_string = copy_arg; |
72b2ff0e | 9192 | b->cond_string = NULL; |
e7e0cddf | 9193 | b->extra_string = NULL; |
0101ce28 | 9194 | b->ignore_count = ignore_count; |
0101ce28 | 9195 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9196 | b->condition_not_parsed = 1; |
41447f92 | 9197 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9198 | if ((type_wanted != bp_breakpoint |
9199 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9200 | b->pspace = current_program_space; |
8bea4e01 | 9201 | |
bfccc43c | 9202 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9203 | } |
9204 | ||
f8eba3c6 | 9205 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9206 | { |
3e43a32a MS |
9207 | warning (_("Multiple breakpoints were set.\nUse the " |
9208 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9209 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9210 | } |
9211 | ||
80c99de1 PA |
9212 | /* That's it. Discard the cleanups for data inserted into the |
9213 | breakpoint. */ | |
9214 | discard_cleanups (bkpt_chain); | |
9215 | /* But cleanup everything else. */ | |
c3f6f71d | 9216 | do_cleanups (old_chain); |
217dc9e2 | 9217 | |
80c99de1 | 9218 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 9219 | update_global_location_list (1); |
fd9b8c24 PA |
9220 | |
9221 | return 1; | |
c3f6f71d | 9222 | } |
c906108c | 9223 | |
348d480f | 9224 | /* Set a breakpoint. |
72b2ff0e VP |
9225 | ARG is a string describing breakpoint address, |
9226 | condition, and thread. | |
9227 | FLAG specifies if a breakpoint is hardware on, | |
9228 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9229 | and BP_TEMPFLAG. */ | |
348d480f | 9230 | |
98deb0da | 9231 | static void |
72b2ff0e | 9232 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9233 | { |
72b2ff0e | 9234 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9235 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9236 | ? bp_hardware_breakpoint | |
9237 | : bp_breakpoint); | |
55aa24fb SDJ |
9238 | struct breakpoint_ops *ops; |
9239 | const char *arg_cp = arg; | |
9240 | ||
9241 | /* Matching breakpoints on probes. */ | |
9242 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9243 | ops = &bkpt_probe_breakpoint_ops; | |
9244 | else | |
9245 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9246 | |
8cdf0e15 VP |
9247 | create_breakpoint (get_current_arch (), |
9248 | arg, | |
e7e0cddf | 9249 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9250 | tempflag, type_wanted, |
8cdf0e15 VP |
9251 | 0 /* Ignore count */, |
9252 | pending_break_support, | |
55aa24fb | 9253 | ops, |
8cdf0e15 | 9254 | from_tty, |
84f4c1fe | 9255 | 1 /* enabled */, |
44f238bb PA |
9256 | 0 /* internal */, |
9257 | 0); | |
c906108c SS |
9258 | } |
9259 | ||
c906108c SS |
9260 | /* Helper function for break_command_1 and disassemble_command. */ |
9261 | ||
9262 | void | |
fba45db2 | 9263 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9264 | { |
9265 | CORE_ADDR pc; | |
9266 | ||
9267 | if (sal->pc == 0 && sal->symtab != NULL) | |
9268 | { | |
9269 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9270 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
9271 | sal->line, sal->symtab->filename); |
9272 | sal->pc = pc; | |
6a048695 | 9273 | |
4a64f543 MS |
9274 | /* If this SAL corresponds to a breakpoint inserted using a line |
9275 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9276 | if (sal->explicit_line) |
059acae7 | 9277 | skip_prologue_sal (sal); |
c906108c SS |
9278 | } |
9279 | ||
9280 | if (sal->section == 0 && sal->symtab != NULL) | |
9281 | { | |
9282 | struct blockvector *bv; | |
c5aa993b JM |
9283 | struct block *b; |
9284 | struct symbol *sym; | |
c906108c | 9285 | |
801e3a5b | 9286 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
9287 | if (bv != NULL) |
9288 | { | |
7f0df278 | 9289 | sym = block_linkage_function (b); |
c906108c SS |
9290 | if (sym != NULL) |
9291 | { | |
9292 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 9293 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
9294 | } |
9295 | else | |
9296 | { | |
4a64f543 MS |
9297 | /* It really is worthwhile to have the section, so we'll |
9298 | just have to look harder. This case can be executed | |
9299 | if we have line numbers but no functions (as can | |
9300 | happen in assembly source). */ | |
c906108c | 9301 | |
c5aa993b | 9302 | struct minimal_symbol *msym; |
6c95b8df PA |
9303 | struct cleanup *old_chain = save_current_space_and_thread (); |
9304 | ||
9305 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9306 | |
9307 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
9308 | if (msym) | |
714835d5 | 9309 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
9310 | |
9311 | do_cleanups (old_chain); | |
c906108c SS |
9312 | } |
9313 | } | |
9314 | } | |
9315 | } | |
9316 | ||
9317 | void | |
fba45db2 | 9318 | break_command (char *arg, int from_tty) |
c906108c | 9319 | { |
db107f19 | 9320 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9321 | } |
9322 | ||
c906108c | 9323 | void |
fba45db2 | 9324 | tbreak_command (char *arg, int from_tty) |
c906108c | 9325 | { |
db107f19 | 9326 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9327 | } |
9328 | ||
c906108c | 9329 | static void |
fba45db2 | 9330 | hbreak_command (char *arg, int from_tty) |
c906108c | 9331 | { |
db107f19 | 9332 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9333 | } |
9334 | ||
9335 | static void | |
fba45db2 | 9336 | thbreak_command (char *arg, int from_tty) |
c906108c | 9337 | { |
db107f19 | 9338 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9339 | } |
9340 | ||
9341 | static void | |
fba45db2 | 9342 | stop_command (char *arg, int from_tty) |
c906108c | 9343 | { |
a3f17187 | 9344 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9345 | Usage: stop in <function | address>\n\ |
a3f17187 | 9346 | stop at <line>\n")); |
c906108c SS |
9347 | } |
9348 | ||
9349 | static void | |
fba45db2 | 9350 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9351 | { |
9352 | int badInput = 0; | |
9353 | ||
c5aa993b | 9354 | if (arg == (char *) NULL) |
c906108c SS |
9355 | badInput = 1; |
9356 | else if (*arg != '*') | |
9357 | { | |
9358 | char *argptr = arg; | |
9359 | int hasColon = 0; | |
9360 | ||
4a64f543 | 9361 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9362 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9363 | function/method name. */ |
c906108c | 9364 | while (*argptr && !hasColon) |
c5aa993b JM |
9365 | { |
9366 | hasColon = (*argptr == ':'); | |
9367 | argptr++; | |
9368 | } | |
c906108c SS |
9369 | |
9370 | if (hasColon) | |
c5aa993b | 9371 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9372 | else |
c5aa993b | 9373 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9374 | } |
9375 | ||
9376 | if (badInput) | |
a3f17187 | 9377 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9378 | else |
db107f19 | 9379 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9380 | } |
9381 | ||
9382 | static void | |
fba45db2 | 9383 | stopat_command (char *arg, int from_tty) |
c906108c SS |
9384 | { |
9385 | int badInput = 0; | |
9386 | ||
c5aa993b | 9387 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9388 | badInput = 1; |
9389 | else | |
9390 | { | |
9391 | char *argptr = arg; | |
9392 | int hasColon = 0; | |
9393 | ||
4a64f543 MS |
9394 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9395 | it is probably a line number. */ | |
c906108c | 9396 | while (*argptr && !hasColon) |
c5aa993b JM |
9397 | { |
9398 | hasColon = (*argptr == ':'); | |
9399 | argptr++; | |
9400 | } | |
c906108c SS |
9401 | |
9402 | if (hasColon) | |
c5aa993b | 9403 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9404 | else |
c5aa993b | 9405 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9406 | } |
9407 | ||
9408 | if (badInput) | |
a3f17187 | 9409 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9410 | else |
db107f19 | 9411 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9412 | } |
9413 | ||
e7e0cddf SS |
9414 | void dprintf_command (char *arg, int from_tty); |
9415 | ||
9416 | /* The dynamic printf command is mostly like a regular breakpoint, but | |
9417 | with a prewired command list consisting of a single output command, | |
9418 | built from extra arguments supplied on the dprintf command | |
9419 | line. */ | |
9420 | ||
9421 | void | |
9422 | dprintf_command (char *arg, int from_tty) | |
9423 | { | |
9424 | create_breakpoint (get_current_arch (), | |
9425 | arg, | |
9426 | NULL, 0, NULL, 1 /* parse arg */, | |
9427 | 0, bp_dprintf, | |
9428 | 0 /* Ignore count */, | |
9429 | pending_break_support, | |
9430 | &dprintf_breakpoint_ops, | |
9431 | from_tty, | |
9432 | 1 /* enabled */, | |
9433 | 0 /* internal */, | |
9434 | 0); | |
9435 | } | |
9436 | ||
f1310107 TJB |
9437 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9438 | ranged breakpoints. */ | |
9439 | ||
9440 | static int | |
9441 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9442 | struct address_space *aspace, | |
09ac7c10 TT |
9443 | CORE_ADDR bp_addr, |
9444 | const struct target_waitstatus *ws) | |
f1310107 | 9445 | { |
09ac7c10 TT |
9446 | if (ws->kind != TARGET_WAITKIND_STOPPED |
9447 | || ws->value.sig != TARGET_SIGNAL_TRAP) | |
9448 | return 0; | |
9449 | ||
f1310107 TJB |
9450 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9451 | bl->length, aspace, bp_addr); | |
9452 | } | |
9453 | ||
9454 | /* Implement the "resources_needed" breakpoint_ops method for | |
9455 | ranged breakpoints. */ | |
9456 | ||
9457 | static int | |
9458 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9459 | { | |
9460 | return target_ranged_break_num_registers (); | |
9461 | } | |
9462 | ||
9463 | /* Implement the "print_it" breakpoint_ops method for | |
9464 | ranged breakpoints. */ | |
9465 | ||
9466 | static enum print_stop_action | |
348d480f | 9467 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9468 | { |
348d480f | 9469 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9470 | struct bp_location *bl = b->loc; |
79a45e25 | 9471 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9472 | |
9473 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9474 | ||
9475 | /* Ranged breakpoints have only one location. */ | |
9476 | gdb_assert (bl && bl->next == NULL); | |
9477 | ||
9478 | annotate_breakpoint (b->number); | |
9479 | if (b->disposition == disp_del) | |
9480 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
9481 | else | |
9482 | ui_out_text (uiout, "\nRanged breakpoint "); | |
9483 | if (ui_out_is_mi_like_p (uiout)) | |
9484 | { | |
9485 | ui_out_field_string (uiout, "reason", | |
9486 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9487 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9488 | } | |
9489 | ui_out_field_int (uiout, "bkptno", b->number); | |
9490 | ui_out_text (uiout, ", "); | |
9491 | ||
9492 | return PRINT_SRC_AND_LOC; | |
9493 | } | |
9494 | ||
9495 | /* Implement the "print_one" breakpoint_ops method for | |
9496 | ranged breakpoints. */ | |
9497 | ||
9498 | static void | |
9499 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9500 | struct bp_location **last_loc) | |
9501 | { | |
9502 | struct bp_location *bl = b->loc; | |
9503 | struct value_print_options opts; | |
79a45e25 | 9504 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9505 | |
9506 | /* Ranged breakpoints have only one location. */ | |
9507 | gdb_assert (bl && bl->next == NULL); | |
9508 | ||
9509 | get_user_print_options (&opts); | |
9510 | ||
9511 | if (opts.addressprint) | |
9512 | /* We don't print the address range here, it will be printed later | |
9513 | by print_one_detail_ranged_breakpoint. */ | |
9514 | ui_out_field_skip (uiout, "addr"); | |
9515 | annotate_field (5); | |
9516 | print_breakpoint_location (b, bl); | |
9517 | *last_loc = bl; | |
9518 | } | |
9519 | ||
9520 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9521 | ranged breakpoints. */ | |
9522 | ||
9523 | static void | |
9524 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9525 | struct ui_out *uiout) | |
9526 | { | |
9527 | CORE_ADDR address_start, address_end; | |
9528 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
9529 | struct ui_file *stb = mem_fileopen (); |
9530 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
9531 | |
9532 | gdb_assert (bl); | |
9533 | ||
9534 | address_start = bl->address; | |
9535 | address_end = address_start + bl->length - 1; | |
9536 | ||
9537 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 9538 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
9539 | print_core_address (bl->gdbarch, address_start), |
9540 | print_core_address (bl->gdbarch, address_end)); | |
9541 | ui_out_field_stream (uiout, "addr", stb); | |
9542 | ui_out_text (uiout, "\n"); | |
9543 | ||
9544 | do_cleanups (cleanup); | |
9545 | } | |
9546 | ||
9547 | /* Implement the "print_mention" breakpoint_ops method for | |
9548 | ranged breakpoints. */ | |
9549 | ||
9550 | static void | |
9551 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9552 | { | |
9553 | struct bp_location *bl = b->loc; | |
79a45e25 | 9554 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9555 | |
9556 | gdb_assert (bl); | |
9557 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9558 | ||
9559 | if (ui_out_is_mi_like_p (uiout)) | |
9560 | return; | |
9561 | ||
9562 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9563 | b->number, paddress (bl->gdbarch, bl->address), | |
9564 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9565 | } | |
9566 | ||
9567 | /* Implement the "print_recreate" breakpoint_ops method for | |
9568 | ranged breakpoints. */ | |
9569 | ||
9570 | static void | |
9571 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9572 | { | |
9573 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
9574 | b->addr_string_range_end); | |
d9b3f62e | 9575 | print_recreate_thread (b, fp); |
f1310107 TJB |
9576 | } |
9577 | ||
9578 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9579 | ||
2060206e | 9580 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9581 | |
9582 | /* Find the address where the end of the breakpoint range should be | |
9583 | placed, given the SAL of the end of the range. This is so that if | |
9584 | the user provides a line number, the end of the range is set to the | |
9585 | last instruction of the given line. */ | |
9586 | ||
9587 | static CORE_ADDR | |
9588 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9589 | { | |
9590 | CORE_ADDR end; | |
9591 | ||
9592 | /* If the user provided a PC value, use it. Otherwise, | |
9593 | find the address of the end of the given location. */ | |
9594 | if (sal.explicit_pc) | |
9595 | end = sal.pc; | |
9596 | else | |
9597 | { | |
9598 | int ret; | |
9599 | CORE_ADDR start; | |
9600 | ||
9601 | ret = find_line_pc_range (sal, &start, &end); | |
9602 | if (!ret) | |
9603 | error (_("Could not find location of the end of the range.")); | |
9604 | ||
9605 | /* find_line_pc_range returns the start of the next line. */ | |
9606 | end--; | |
9607 | } | |
9608 | ||
9609 | return end; | |
9610 | } | |
9611 | ||
9612 | /* Implement the "break-range" CLI command. */ | |
9613 | ||
9614 | static void | |
9615 | break_range_command (char *arg, int from_tty) | |
9616 | { | |
9617 | char *arg_start, *addr_string_start, *addr_string_end; | |
9618 | struct linespec_result canonical_start, canonical_end; | |
9619 | int bp_count, can_use_bp, length; | |
9620 | CORE_ADDR end; | |
9621 | struct breakpoint *b; | |
9622 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 9623 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 9624 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
9625 | |
9626 | /* We don't support software ranged breakpoints. */ | |
9627 | if (target_ranged_break_num_registers () < 0) | |
9628 | error (_("This target does not support hardware ranged breakpoints.")); | |
9629 | ||
9630 | bp_count = hw_breakpoint_used_count (); | |
9631 | bp_count += target_ranged_break_num_registers (); | |
9632 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
9633 | bp_count, 0); | |
9634 | if (can_use_bp < 0) | |
9635 | error (_("Hardware breakpoints used exceeds limit.")); | |
9636 | ||
f8eba3c6 | 9637 | arg = skip_spaces (arg); |
f1310107 TJB |
9638 | if (arg == NULL || arg[0] == '\0') |
9639 | error(_("No address range specified.")); | |
9640 | ||
f1310107 TJB |
9641 | init_linespec_result (&canonical_start); |
9642 | ||
f8eba3c6 TT |
9643 | arg_start = arg; |
9644 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 9645 | |
f8eba3c6 | 9646 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
9647 | |
9648 | if (arg[0] != ',') | |
9649 | error (_("Too few arguments.")); | |
f8eba3c6 | 9650 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 9651 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
9652 | |
9653 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
9654 | ||
9655 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
9656 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
9657 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9658 | ||
f8eba3c6 TT |
9659 | sal_start = lsal_start->sals.sals[0]; |
9660 | addr_string_start = savestring (arg_start, arg - arg_start); | |
9661 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
9662 | |
9663 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 9664 | arg = skip_spaces (arg); |
f1310107 TJB |
9665 | |
9666 | /* Parse the end location. */ | |
9667 | ||
f1310107 TJB |
9668 | init_linespec_result (&canonical_end); |
9669 | arg_start = arg; | |
9670 | ||
f8eba3c6 | 9671 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
9672 | parse_breakpoint_sals because we need to specify the start location's |
9673 | symtab and line as the default symtab and line for the end of the | |
9674 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
9675 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
9676 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
9677 | sal_start.symtab, sal_start.line, | |
9678 | &canonical_end, NULL, NULL); | |
9679 | ||
9680 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 9681 | |
f8eba3c6 | 9682 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 9683 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
9684 | |
9685 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
9686 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
9687 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
9688 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
9689 | ||
f8eba3c6 TT |
9690 | sal_end = lsal_end->sals.sals[0]; |
9691 | addr_string_end = savestring (arg_start, arg - arg_start); | |
9692 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
9693 | |
9694 | end = find_breakpoint_range_end (sal_end); | |
9695 | if (sal_start.pc > end) | |
177b42fe | 9696 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
9697 | |
9698 | length = end - sal_start.pc + 1; | |
9699 | if (length < 0) | |
9700 | /* Length overflowed. */ | |
9701 | error (_("Address range too large.")); | |
9702 | else if (length == 1) | |
9703 | { | |
9704 | /* This range is simple enough to be handled by | |
9705 | the `hbreak' command. */ | |
9706 | hbreak_command (addr_string_start, 1); | |
9707 | ||
9708 | do_cleanups (cleanup_bkpt); | |
9709 | ||
9710 | return; | |
9711 | } | |
9712 | ||
9713 | /* Now set up the breakpoint. */ | |
9714 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 9715 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
9716 | set_breakpoint_count (breakpoint_count + 1); |
9717 | b->number = breakpoint_count; | |
9718 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
9719 | b->addr_string = xstrdup (addr_string_start); |
9720 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
9721 | b->loc->length = length; |
9722 | ||
f8eba3c6 | 9723 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
9724 | |
9725 | mention (b); | |
8d3788bd | 9726 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
9727 | update_global_location_list (1); |
9728 | } | |
9729 | ||
4a64f543 MS |
9730 | /* Return non-zero if EXP is verified as constant. Returned zero |
9731 | means EXP is variable. Also the constant detection may fail for | |
9732 | some constant expressions and in such case still falsely return | |
9733 | zero. */ | |
2e6e3d9c | 9734 | |
65d79d4b SDJ |
9735 | static int |
9736 | watchpoint_exp_is_const (const struct expression *exp) | |
9737 | { | |
9738 | int i = exp->nelts; | |
9739 | ||
9740 | while (i > 0) | |
9741 | { | |
9742 | int oplenp, argsp; | |
9743 | ||
9744 | /* We are only interested in the descriptor of each element. */ | |
9745 | operator_length (exp, i, &oplenp, &argsp); | |
9746 | i -= oplenp; | |
9747 | ||
9748 | switch (exp->elts[i].opcode) | |
9749 | { | |
9750 | case BINOP_ADD: | |
9751 | case BINOP_SUB: | |
9752 | case BINOP_MUL: | |
9753 | case BINOP_DIV: | |
9754 | case BINOP_REM: | |
9755 | case BINOP_MOD: | |
9756 | case BINOP_LSH: | |
9757 | case BINOP_RSH: | |
9758 | case BINOP_LOGICAL_AND: | |
9759 | case BINOP_LOGICAL_OR: | |
9760 | case BINOP_BITWISE_AND: | |
9761 | case BINOP_BITWISE_IOR: | |
9762 | case BINOP_BITWISE_XOR: | |
9763 | case BINOP_EQUAL: | |
9764 | case BINOP_NOTEQUAL: | |
9765 | case BINOP_LESS: | |
9766 | case BINOP_GTR: | |
9767 | case BINOP_LEQ: | |
9768 | case BINOP_GEQ: | |
9769 | case BINOP_REPEAT: | |
9770 | case BINOP_COMMA: | |
9771 | case BINOP_EXP: | |
9772 | case BINOP_MIN: | |
9773 | case BINOP_MAX: | |
9774 | case BINOP_INTDIV: | |
9775 | case BINOP_CONCAT: | |
9776 | case BINOP_IN: | |
9777 | case BINOP_RANGE: | |
9778 | case TERNOP_COND: | |
9779 | case TERNOP_SLICE: | |
9780 | case TERNOP_SLICE_COUNT: | |
9781 | ||
9782 | case OP_LONG: | |
9783 | case OP_DOUBLE: | |
9784 | case OP_DECFLOAT: | |
9785 | case OP_LAST: | |
9786 | case OP_COMPLEX: | |
9787 | case OP_STRING: | |
9788 | case OP_BITSTRING: | |
9789 | case OP_ARRAY: | |
9790 | case OP_TYPE: | |
9791 | case OP_NAME: | |
9792 | case OP_OBJC_NSSTRING: | |
9793 | ||
9794 | case UNOP_NEG: | |
9795 | case UNOP_LOGICAL_NOT: | |
9796 | case UNOP_COMPLEMENT: | |
9797 | case UNOP_ADDR: | |
9798 | case UNOP_HIGH: | |
aeaa2474 | 9799 | case UNOP_CAST: |
4a64f543 MS |
9800 | /* Unary, binary and ternary operators: We have to check |
9801 | their operands. If they are constant, then so is the | |
9802 | result of that operation. For instance, if A and B are | |
9803 | determined to be constants, then so is "A + B". | |
9804 | ||
9805 | UNOP_IND is one exception to the rule above, because the | |
9806 | value of *ADDR is not necessarily a constant, even when | |
9807 | ADDR is. */ | |
65d79d4b SDJ |
9808 | break; |
9809 | ||
9810 | case OP_VAR_VALUE: | |
9811 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 9812 | |
65d79d4b | 9813 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
9814 | possible that a buggy compiler could mark a variable as |
9815 | constant even when it is not, and TYPE_CONST would return | |
9816 | true in this case, while SYMBOL_CLASS wouldn't. | |
9817 | ||
9818 | We also have to check for function symbols because they | |
9819 | are always constant. */ | |
65d79d4b SDJ |
9820 | { |
9821 | struct symbol *s = exp->elts[i + 2].symbol; | |
9822 | ||
9823 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
9824 | && SYMBOL_CLASS (s) != LOC_CONST | |
9825 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
9826 | return 0; | |
9827 | break; | |
9828 | } | |
9829 | ||
9830 | /* The default action is to return 0 because we are using | |
9831 | the optimistic approach here: If we don't know something, | |
9832 | then it is not a constant. */ | |
9833 | default: | |
9834 | return 0; | |
9835 | } | |
9836 | } | |
9837 | ||
9838 | return 1; | |
9839 | } | |
9840 | ||
3a5c3e22 PA |
9841 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
9842 | ||
9843 | static void | |
9844 | dtor_watchpoint (struct breakpoint *self) | |
9845 | { | |
9846 | struct watchpoint *w = (struct watchpoint *) self; | |
9847 | ||
9848 | xfree (w->cond_exp); | |
9849 | xfree (w->exp); | |
9850 | xfree (w->exp_string); | |
9851 | xfree (w->exp_string_reparse); | |
9852 | value_free (w->val); | |
9853 | ||
9854 | base_breakpoint_ops.dtor (self); | |
9855 | } | |
9856 | ||
348d480f PA |
9857 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
9858 | ||
9859 | static void | |
9860 | re_set_watchpoint (struct breakpoint *b) | |
9861 | { | |
3a5c3e22 PA |
9862 | struct watchpoint *w = (struct watchpoint *) b; |
9863 | ||
348d480f PA |
9864 | /* Watchpoint can be either on expression using entirely global |
9865 | variables, or it can be on local variables. | |
9866 | ||
9867 | Watchpoints of the first kind are never auto-deleted, and even | |
9868 | persist across program restarts. Since they can use variables | |
9869 | from shared libraries, we need to reparse expression as libraries | |
9870 | are loaded and unloaded. | |
9871 | ||
9872 | Watchpoints on local variables can also change meaning as result | |
9873 | of solib event. For example, if a watchpoint uses both a local | |
9874 | and a global variables in expression, it's a local watchpoint, | |
9875 | but unloading of a shared library will make the expression | |
9876 | invalid. This is not a very common use case, but we still | |
9877 | re-evaluate expression, to avoid surprises to the user. | |
9878 | ||
9879 | Note that for local watchpoints, we re-evaluate it only if | |
9880 | watchpoints frame id is still valid. If it's not, it means the | |
9881 | watchpoint is out of scope and will be deleted soon. In fact, | |
9882 | I'm not sure we'll ever be called in this case. | |
9883 | ||
9884 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 9885 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 9886 | |
3a5c3e22 PA |
9887 | Don't do anything about disabled watchpoints, since they will be |
9888 | reevaluated again when enabled. */ | |
9889 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
9890 | } |
9891 | ||
77b06cd7 TJB |
9892 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
9893 | ||
9894 | static int | |
9895 | insert_watchpoint (struct bp_location *bl) | |
9896 | { | |
3a5c3e22 PA |
9897 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
9898 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
9899 | |
9900 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 9901 | w->cond_exp); |
77b06cd7 TJB |
9902 | } |
9903 | ||
9904 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
9905 | ||
9906 | static int | |
9907 | remove_watchpoint (struct bp_location *bl) | |
9908 | { | |
3a5c3e22 PA |
9909 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
9910 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
9911 | |
9912 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 9913 | w->cond_exp); |
e09342b5 TJB |
9914 | } |
9915 | ||
e09342b5 | 9916 | static int |
348d480f | 9917 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
9918 | struct address_space *aspace, CORE_ADDR bp_addr, |
9919 | const struct target_waitstatus *ws) | |
e09342b5 | 9920 | { |
348d480f | 9921 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 9922 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 9923 | |
348d480f PA |
9924 | /* Continuable hardware watchpoints are treated as non-existent if the |
9925 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
9926 | some data address). Otherwise gdb won't stop on a break instruction | |
9927 | in the code (not from a breakpoint) when a hardware watchpoint has | |
9928 | been defined. Also skip watchpoints which we know did not trigger | |
9929 | (did not match the data address). */ | |
9930 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 9931 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 9932 | return 0; |
9c06b0b4 | 9933 | |
348d480f | 9934 | return 1; |
9c06b0b4 TJB |
9935 | } |
9936 | ||
348d480f PA |
9937 | static void |
9938 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 9939 | { |
348d480f | 9940 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 9941 | |
348d480f | 9942 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
9943 | } |
9944 | ||
9945 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 9946 | hardware watchpoints. */ |
9c06b0b4 TJB |
9947 | |
9948 | static int | |
348d480f | 9949 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 9950 | { |
3a5c3e22 PA |
9951 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
9952 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
9953 | |
9954 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
9955 | } |
9956 | ||
9957 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 9958 | hardware watchpoints. */ |
9c06b0b4 TJB |
9959 | |
9960 | static int | |
348d480f | 9961 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 9962 | { |
efa80663 PA |
9963 | /* Read and access watchpoints only work with hardware support. */ |
9964 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
9965 | } |
9966 | ||
9c06b0b4 | 9967 | static enum print_stop_action |
348d480f | 9968 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 9969 | { |
348d480f PA |
9970 | struct cleanup *old_chain; |
9971 | struct breakpoint *b; | |
9972 | const struct bp_location *bl; | |
f99d8bf4 | 9973 | struct ui_file *stb; |
348d480f | 9974 | enum print_stop_action result; |
3a5c3e22 | 9975 | struct watchpoint *w; |
79a45e25 | 9976 | struct ui_out *uiout = current_uiout; |
348d480f PA |
9977 | |
9978 | gdb_assert (bs->bp_location_at != NULL); | |
9979 | ||
9980 | bl = bs->bp_location_at; | |
9981 | b = bs->breakpoint_at; | |
3a5c3e22 | 9982 | w = (struct watchpoint *) b; |
348d480f | 9983 | |
f99d8bf4 PA |
9984 | stb = mem_fileopen (); |
9985 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
9986 | |
9987 | switch (b->type) | |
9988 | { | |
348d480f | 9989 | case bp_watchpoint: |
9c06b0b4 TJB |
9990 | case bp_hardware_watchpoint: |
9991 | annotate_watchpoint (b->number); | |
9992 | if (ui_out_is_mi_like_p (uiout)) | |
9993 | ui_out_field_string | |
9994 | (uiout, "reason", | |
9995 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
9996 | mention (b); |
9997 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
9998 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 9999 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10000 | ui_out_field_stream (uiout, "old", stb); |
10001 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10002 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10003 | ui_out_field_stream (uiout, "new", stb); |
10004 | ui_out_text (uiout, "\n"); | |
10005 | /* More than one watchpoint may have been triggered. */ | |
10006 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10007 | break; |
10008 | ||
10009 | case bp_read_watchpoint: | |
10010 | if (ui_out_is_mi_like_p (uiout)) | |
10011 | ui_out_field_string | |
10012 | (uiout, "reason", | |
10013 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10014 | mention (b); |
10015 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10016 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10017 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10018 | ui_out_field_stream (uiout, "value", stb); |
10019 | ui_out_text (uiout, "\n"); | |
10020 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10021 | break; |
10022 | ||
10023 | case bp_access_watchpoint: | |
348d480f PA |
10024 | if (bs->old_val != NULL) |
10025 | { | |
10026 | annotate_watchpoint (b->number); | |
10027 | if (ui_out_is_mi_like_p (uiout)) | |
10028 | ui_out_field_string | |
10029 | (uiout, "reason", | |
10030 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10031 | mention (b); | |
10032 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10033 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10034 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10035 | ui_out_field_stream (uiout, "old", stb); |
10036 | ui_out_text (uiout, "\nNew value = "); | |
10037 | } | |
10038 | else | |
10039 | { | |
10040 | mention (b); | |
10041 | if (ui_out_is_mi_like_p (uiout)) | |
10042 | ui_out_field_string | |
10043 | (uiout, "reason", | |
10044 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10045 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10046 | ui_out_text (uiout, "\nValue = "); | |
10047 | } | |
f99d8bf4 | 10048 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10049 | ui_out_field_stream (uiout, "new", stb); |
10050 | ui_out_text (uiout, "\n"); | |
10051 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10052 | break; |
10053 | default: | |
348d480f | 10054 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10055 | } |
10056 | ||
348d480f PA |
10057 | do_cleanups (old_chain); |
10058 | return result; | |
10059 | } | |
10060 | ||
10061 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10062 | watchpoints. */ | |
10063 | ||
10064 | static void | |
10065 | print_mention_watchpoint (struct breakpoint *b) | |
10066 | { | |
10067 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10068 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10069 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10070 | |
10071 | switch (b->type) | |
10072 | { | |
10073 | case bp_watchpoint: | |
10074 | ui_out_text (uiout, "Watchpoint "); | |
10075 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10076 | break; | |
10077 | case bp_hardware_watchpoint: | |
10078 | ui_out_text (uiout, "Hardware watchpoint "); | |
10079 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10080 | break; | |
10081 | case bp_read_watchpoint: | |
10082 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10083 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10084 | break; | |
10085 | case bp_access_watchpoint: | |
10086 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10087 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10088 | break; | |
10089 | default: | |
10090 | internal_error (__FILE__, __LINE__, | |
10091 | _("Invalid hardware watchpoint type.")); | |
10092 | } | |
10093 | ||
10094 | ui_out_field_int (uiout, "number", b->number); | |
10095 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10096 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10097 | do_cleanups (ui_out_chain); |
10098 | } | |
10099 | ||
10100 | /* Implement the "print_recreate" breakpoint_ops method for | |
10101 | watchpoints. */ | |
10102 | ||
10103 | static void | |
10104 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10105 | { | |
3a5c3e22 PA |
10106 | struct watchpoint *w = (struct watchpoint *) b; |
10107 | ||
348d480f PA |
10108 | switch (b->type) |
10109 | { | |
10110 | case bp_watchpoint: | |
10111 | case bp_hardware_watchpoint: | |
10112 | fprintf_unfiltered (fp, "watch"); | |
10113 | break; | |
10114 | case bp_read_watchpoint: | |
10115 | fprintf_unfiltered (fp, "rwatch"); | |
10116 | break; | |
10117 | case bp_access_watchpoint: | |
10118 | fprintf_unfiltered (fp, "awatch"); | |
10119 | break; | |
10120 | default: | |
10121 | internal_error (__FILE__, __LINE__, | |
10122 | _("Invalid watchpoint type.")); | |
10123 | } | |
10124 | ||
3a5c3e22 | 10125 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10126 | print_recreate_thread (b, fp); |
348d480f PA |
10127 | } |
10128 | ||
10129 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
10130 | ||
2060206e | 10131 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10132 | |
10133 | /* Implement the "insert" breakpoint_ops method for | |
10134 | masked hardware watchpoints. */ | |
10135 | ||
10136 | static int | |
10137 | insert_masked_watchpoint (struct bp_location *bl) | |
10138 | { | |
3a5c3e22 PA |
10139 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10140 | ||
10141 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10142 | bl->watchpoint_type); |
10143 | } | |
10144 | ||
10145 | /* Implement the "remove" breakpoint_ops method for | |
10146 | masked hardware watchpoints. */ | |
10147 | ||
10148 | static int | |
10149 | remove_masked_watchpoint (struct bp_location *bl) | |
10150 | { | |
3a5c3e22 PA |
10151 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10152 | ||
10153 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10154 | bl->watchpoint_type); |
10155 | } | |
10156 | ||
10157 | /* Implement the "resources_needed" breakpoint_ops method for | |
10158 | masked hardware watchpoints. */ | |
10159 | ||
10160 | static int | |
10161 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10162 | { | |
3a5c3e22 PA |
10163 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10164 | ||
10165 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10166 | } |
10167 | ||
10168 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10169 | masked hardware watchpoints. */ | |
10170 | ||
10171 | static int | |
10172 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10173 | { | |
10174 | return 0; | |
10175 | } | |
10176 | ||
10177 | /* Implement the "print_it" breakpoint_ops method for | |
10178 | masked hardware watchpoints. */ | |
10179 | ||
10180 | static enum print_stop_action | |
10181 | print_it_masked_watchpoint (bpstat bs) | |
10182 | { | |
10183 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10184 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10185 | |
10186 | /* Masked watchpoints have only one location. */ | |
10187 | gdb_assert (b->loc && b->loc->next == NULL); | |
10188 | ||
10189 | switch (b->type) | |
10190 | { | |
10191 | case bp_hardware_watchpoint: | |
10192 | annotate_watchpoint (b->number); | |
10193 | if (ui_out_is_mi_like_p (uiout)) | |
10194 | ui_out_field_string | |
10195 | (uiout, "reason", | |
10196 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10197 | break; | |
10198 | ||
10199 | case bp_read_watchpoint: | |
10200 | if (ui_out_is_mi_like_p (uiout)) | |
10201 | ui_out_field_string | |
10202 | (uiout, "reason", | |
10203 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10204 | break; | |
10205 | ||
10206 | case bp_access_watchpoint: | |
10207 | if (ui_out_is_mi_like_p (uiout)) | |
10208 | ui_out_field_string | |
10209 | (uiout, "reason", | |
10210 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10211 | break; | |
10212 | default: | |
10213 | internal_error (__FILE__, __LINE__, | |
10214 | _("Invalid hardware watchpoint type.")); | |
10215 | } | |
10216 | ||
10217 | mention (b); | |
9c06b0b4 TJB |
10218 | ui_out_text (uiout, _("\n\ |
10219 | Check the underlying instruction at PC for the memory\n\ | |
10220 | address and value which triggered this watchpoint.\n")); | |
10221 | ui_out_text (uiout, "\n"); | |
10222 | ||
10223 | /* More than one watchpoint may have been triggered. */ | |
10224 | return PRINT_UNKNOWN; | |
10225 | } | |
10226 | ||
10227 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10228 | masked hardware watchpoints. */ | |
10229 | ||
10230 | static void | |
10231 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10232 | struct ui_out *uiout) | |
10233 | { | |
3a5c3e22 PA |
10234 | struct watchpoint *w = (struct watchpoint *) b; |
10235 | ||
9c06b0b4 TJB |
10236 | /* Masked watchpoints have only one location. */ |
10237 | gdb_assert (b->loc && b->loc->next == NULL); | |
10238 | ||
10239 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10240 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10241 | ui_out_text (uiout, "\n"); |
10242 | } | |
10243 | ||
10244 | /* Implement the "print_mention" breakpoint_ops method for | |
10245 | masked hardware watchpoints. */ | |
10246 | ||
10247 | static void | |
10248 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10249 | { | |
3a5c3e22 | 10250 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10251 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10252 | struct cleanup *ui_out_chain; |
10253 | ||
10254 | switch (b->type) | |
10255 | { | |
10256 | case bp_hardware_watchpoint: | |
10257 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10258 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10259 | break; | |
10260 | case bp_read_watchpoint: | |
10261 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10262 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10263 | break; | |
10264 | case bp_access_watchpoint: | |
10265 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10266 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10267 | break; | |
10268 | default: | |
10269 | internal_error (__FILE__, __LINE__, | |
10270 | _("Invalid hardware watchpoint type.")); | |
10271 | } | |
10272 | ||
10273 | ui_out_field_int (uiout, "number", b->number); | |
10274 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10275 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10276 | do_cleanups (ui_out_chain); |
10277 | } | |
10278 | ||
10279 | /* Implement the "print_recreate" breakpoint_ops method for | |
10280 | masked hardware watchpoints. */ | |
10281 | ||
10282 | static void | |
10283 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10284 | { | |
3a5c3e22 | 10285 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10286 | char tmp[40]; |
10287 | ||
10288 | switch (b->type) | |
10289 | { | |
10290 | case bp_hardware_watchpoint: | |
10291 | fprintf_unfiltered (fp, "watch"); | |
10292 | break; | |
10293 | case bp_read_watchpoint: | |
10294 | fprintf_unfiltered (fp, "rwatch"); | |
10295 | break; | |
10296 | case bp_access_watchpoint: | |
10297 | fprintf_unfiltered (fp, "awatch"); | |
10298 | break; | |
10299 | default: | |
10300 | internal_error (__FILE__, __LINE__, | |
10301 | _("Invalid hardware watchpoint type.")); | |
10302 | } | |
10303 | ||
3a5c3e22 PA |
10304 | sprintf_vma (tmp, w->hw_wp_mask); |
10305 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10306 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10307 | } |
10308 | ||
10309 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10310 | ||
2060206e | 10311 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10312 | |
10313 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10314 | ||
10315 | static int | |
10316 | is_masked_watchpoint (const struct breakpoint *b) | |
10317 | { | |
10318 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10319 | } | |
10320 | ||
53a5351d JM |
10321 | /* accessflag: hw_write: watch write, |
10322 | hw_read: watch read, | |
10323 | hw_access: watch access (read or write) */ | |
c906108c | 10324 | static void |
84f4c1fe PM |
10325 | watch_command_1 (char *arg, int accessflag, int from_tty, |
10326 | int just_location, int internal) | |
c906108c | 10327 | { |
a9634178 | 10328 | volatile struct gdb_exception e; |
d983da9c | 10329 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10330 | struct expression *exp; |
60e1c644 | 10331 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10332 | struct value *val, *mark, *result; |
c906108c | 10333 | struct frame_info *frame; |
c906108c SS |
10334 | char *exp_start = NULL; |
10335 | char *exp_end = NULL; | |
9c06b0b4 TJB |
10336 | char *tok, *end_tok; |
10337 | int toklen = -1; | |
c906108c SS |
10338 | char *cond_start = NULL; |
10339 | char *cond_end = NULL; | |
c906108c | 10340 | enum bptype bp_type; |
37e4754d | 10341 | int thread = -1; |
0cf6dd15 | 10342 | int pc = 0; |
9c06b0b4 TJB |
10343 | /* Flag to indicate whether we are going to use masks for |
10344 | the hardware watchpoint. */ | |
10345 | int use_mask = 0; | |
10346 | CORE_ADDR mask = 0; | |
3a5c3e22 | 10347 | struct watchpoint *w; |
c906108c | 10348 | |
37e4754d LM |
10349 | /* Make sure that we actually have parameters to parse. */ |
10350 | if (arg != NULL && arg[0] != '\0') | |
10351 | { | |
9c06b0b4 | 10352 | char *value_start; |
37e4754d | 10353 | |
9c06b0b4 TJB |
10354 | /* Look for "parameter value" pairs at the end |
10355 | of the arguments string. */ | |
10356 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
10357 | { | |
10358 | /* Skip whitespace at the end of the argument list. */ | |
10359 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10360 | tok--; | |
10361 | ||
10362 | /* Find the beginning of the last token. | |
10363 | This is the value of the parameter. */ | |
10364 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10365 | tok--; | |
10366 | value_start = tok + 1; | |
10367 | ||
10368 | /* Skip whitespace. */ | |
10369 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10370 | tok--; | |
10371 | ||
10372 | end_tok = tok; | |
10373 | ||
10374 | /* Find the beginning of the second to last token. | |
10375 | This is the parameter itself. */ | |
10376 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10377 | tok--; | |
10378 | tok++; | |
10379 | toklen = end_tok - tok + 1; | |
10380 | ||
10381 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
10382 | { | |
10383 | /* At this point we've found a "thread" token, which means | |
10384 | the user is trying to set a watchpoint that triggers | |
10385 | only in a specific thread. */ | |
10386 | char *endp; | |
37e4754d | 10387 | |
9c06b0b4 TJB |
10388 | if (thread != -1) |
10389 | error(_("You can specify only one thread.")); | |
37e4754d | 10390 | |
9c06b0b4 TJB |
10391 | /* Extract the thread ID from the next token. */ |
10392 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 10393 | |
9c06b0b4 TJB |
10394 | /* Check if the user provided a valid numeric value for the |
10395 | thread ID. */ | |
10396 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
10397 | error (_("Invalid thread ID specification %s."), value_start); | |
10398 | ||
10399 | /* Check if the thread actually exists. */ | |
10400 | if (!valid_thread_id (thread)) | |
10401 | error (_("Unknown thread %d."), thread); | |
10402 | } | |
10403 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
10404 | { | |
10405 | /* We've found a "mask" token, which means the user wants to | |
10406 | create a hardware watchpoint that is going to have the mask | |
10407 | facility. */ | |
10408 | struct value *mask_value, *mark; | |
37e4754d | 10409 | |
9c06b0b4 TJB |
10410 | if (use_mask) |
10411 | error(_("You can specify only one mask.")); | |
37e4754d | 10412 | |
9c06b0b4 | 10413 | use_mask = just_location = 1; |
37e4754d | 10414 | |
9c06b0b4 TJB |
10415 | mark = value_mark (); |
10416 | mask_value = parse_to_comma_and_eval (&value_start); | |
10417 | mask = value_as_address (mask_value); | |
10418 | value_free_to_mark (mark); | |
10419 | } | |
10420 | else | |
10421 | /* We didn't recognize what we found. We should stop here. */ | |
10422 | break; | |
37e4754d | 10423 | |
9c06b0b4 TJB |
10424 | /* Truncate the string and get rid of the "parameter value" pair before |
10425 | the arguments string is parsed by the parse_exp_1 function. */ | |
10426 | *tok = '\0'; | |
10427 | } | |
37e4754d LM |
10428 | } |
10429 | ||
10430 | /* Parse the rest of the arguments. */ | |
c906108c SS |
10431 | innermost_block = NULL; |
10432 | exp_start = arg; | |
10433 | exp = parse_exp_1 (&arg, 0, 0); | |
10434 | exp_end = arg; | |
fa8a61dc TT |
10435 | /* Remove trailing whitespace from the expression before saving it. |
10436 | This makes the eventual display of the expression string a bit | |
10437 | prettier. */ | |
10438 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10439 | --exp_end; | |
10440 | ||
65d79d4b SDJ |
10441 | /* Checking if the expression is not constant. */ |
10442 | if (watchpoint_exp_is_const (exp)) | |
10443 | { | |
10444 | int len; | |
10445 | ||
10446 | len = exp_end - exp_start; | |
10447 | while (len > 0 && isspace (exp_start[len - 1])) | |
10448 | len--; | |
10449 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10450 | } | |
10451 | ||
c906108c SS |
10452 | exp_valid_block = innermost_block; |
10453 | mark = value_mark (); | |
a1442452 | 10454 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
10455 | |
10456 | if (just_location) | |
10457 | { | |
9c06b0b4 TJB |
10458 | int ret; |
10459 | ||
06a64a0b | 10460 | exp_valid_block = NULL; |
a1442452 | 10461 | val = value_addr (result); |
06a64a0b TT |
10462 | release_value (val); |
10463 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10464 | |
10465 | if (use_mask) | |
10466 | { | |
10467 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10468 | mask); | |
10469 | if (ret == -1) | |
10470 | error (_("This target does not support masked watchpoints.")); | |
10471 | else if (ret == -2) | |
10472 | error (_("Invalid mask or memory region.")); | |
10473 | } | |
06a64a0b TT |
10474 | } |
10475 | else if (val != NULL) | |
fa4727a6 | 10476 | release_value (val); |
c906108c | 10477 | |
e9cafbcc TT |
10478 | tok = skip_spaces (arg); |
10479 | end_tok = skip_to_space (tok); | |
c906108c SS |
10480 | |
10481 | toklen = end_tok - tok; | |
10482 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10483 | { | |
2d134ed3 PA |
10484 | struct expression *cond; |
10485 | ||
60e1c644 | 10486 | innermost_block = NULL; |
c906108c SS |
10487 | tok = cond_start = end_tok + 1; |
10488 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
10489 | |
10490 | /* The watchpoint expression may not be local, but the condition | |
10491 | may still be. E.g.: `watch global if local > 0'. */ | |
10492 | cond_exp_valid_block = innermost_block; | |
10493 | ||
2d134ed3 | 10494 | xfree (cond); |
c906108c SS |
10495 | cond_end = tok; |
10496 | } | |
10497 | if (*tok) | |
8a3fe4f8 | 10498 | error (_("Junk at end of command.")); |
c906108c | 10499 | |
53a5351d | 10500 | if (accessflag == hw_read) |
c5aa993b | 10501 | bp_type = bp_read_watchpoint; |
53a5351d | 10502 | else if (accessflag == hw_access) |
c5aa993b JM |
10503 | bp_type = bp_access_watchpoint; |
10504 | else | |
10505 | bp_type = bp_hardware_watchpoint; | |
c906108c | 10506 | |
d983da9c | 10507 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
10508 | |
10509 | /* If the expression is "local", then set up a "watchpoint scope" | |
10510 | breakpoint at the point where we've left the scope of the watchpoint | |
10511 | expression. Create the scope breakpoint before the watchpoint, so | |
10512 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 10513 | if (exp_valid_block && frame) |
d983da9c | 10514 | { |
edb3359d DJ |
10515 | if (frame_id_p (frame_unwind_caller_id (frame))) |
10516 | { | |
10517 | scope_breakpoint | |
a6d9a66e UW |
10518 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
10519 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
10520 | bp_watchpoint_scope, |
10521 | &momentary_breakpoint_ops); | |
d983da9c | 10522 | |
edb3359d | 10523 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10524 | |
edb3359d DJ |
10525 | /* Automatically delete the breakpoint when it hits. */ |
10526 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10527 | |
edb3359d DJ |
10528 | /* Only break in the proper frame (help with recursion). */ |
10529 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 10530 | |
edb3359d | 10531 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
10532 | scope_breakpoint->loc->gdbarch |
10533 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
10534 | scope_breakpoint->loc->requested_address |
10535 | = frame_unwind_caller_pc (frame); | |
10536 | scope_breakpoint->loc->address | |
a6d9a66e UW |
10537 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10538 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10539 | scope_breakpoint->type); |
10540 | } | |
d983da9c DJ |
10541 | } |
10542 | ||
c906108c | 10543 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
10544 | |
10545 | w = XCNEW (struct watchpoint); | |
10546 | b = &w->base; | |
348d480f | 10547 | if (use_mask) |
3a5c3e22 PA |
10548 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10549 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 10550 | else |
3a5c3e22 PA |
10551 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10552 | &watchpoint_breakpoint_ops); | |
37e4754d | 10553 | b->thread = thread; |
b5de0fa7 | 10554 | b->disposition = disp_donttouch; |
348d480f | 10555 | b->pspace = current_program_space; |
3a5c3e22 PA |
10556 | w->exp = exp; |
10557 | w->exp_valid_block = exp_valid_block; | |
10558 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10559 | if (just_location) |
10560 | { | |
10561 | struct type *t = value_type (val); | |
10562 | CORE_ADDR addr = value_as_address (val); | |
10563 | char *name; | |
10564 | ||
10565 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
10566 | name = type_to_string (t); | |
10567 | ||
3a5c3e22 | 10568 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 10569 | core_addr_to_string (addr)); |
06a64a0b TT |
10570 | xfree (name); |
10571 | ||
3a5c3e22 | 10572 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
10573 | (int) (exp_end - exp_start), exp_start); |
10574 | ||
06a64a0b TT |
10575 | /* The above expression is in C. */ |
10576 | b->language = language_c; | |
10577 | } | |
10578 | else | |
3a5c3e22 | 10579 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10580 | |
10581 | if (use_mask) | |
10582 | { | |
3a5c3e22 | 10583 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10584 | } |
10585 | else | |
10586 | { | |
3a5c3e22 PA |
10587 | w->val = val; |
10588 | w->val_valid = 1; | |
9c06b0b4 | 10589 | } |
77b06cd7 | 10590 | |
c906108c SS |
10591 | if (cond_start) |
10592 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
10593 | else | |
10594 | b->cond_string = 0; | |
c5aa993b | 10595 | |
c906108c | 10596 | if (frame) |
f6bc2008 | 10597 | { |
3a5c3e22 PA |
10598 | w->watchpoint_frame = get_frame_id (frame); |
10599 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 10600 | } |
c906108c | 10601 | else |
f6bc2008 | 10602 | { |
3a5c3e22 PA |
10603 | w->watchpoint_frame = null_frame_id; |
10604 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10605 | } |
c906108c | 10606 | |
d983da9c | 10607 | if (scope_breakpoint != NULL) |
c906108c | 10608 | { |
d983da9c DJ |
10609 | /* The scope breakpoint is related to the watchpoint. We will |
10610 | need to act on them together. */ | |
10611 | b->related_breakpoint = scope_breakpoint; | |
10612 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 10613 | } |
d983da9c | 10614 | |
06a64a0b TT |
10615 | if (!just_location) |
10616 | value_free_to_mark (mark); | |
2d134ed3 | 10617 | |
a9634178 TJB |
10618 | TRY_CATCH (e, RETURN_MASK_ALL) |
10619 | { | |
10620 | /* Finally update the new watchpoint. This creates the locations | |
10621 | that should be inserted. */ | |
3a5c3e22 | 10622 | update_watchpoint (w, 1); |
a9634178 TJB |
10623 | } |
10624 | if (e.reason < 0) | |
10625 | { | |
10626 | delete_breakpoint (b); | |
10627 | throw_exception (e); | |
10628 | } | |
10629 | ||
3ea46bff | 10630 | install_breakpoint (internal, b, 1); |
c906108c SS |
10631 | } |
10632 | ||
e09342b5 | 10633 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 10634 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 10635 | |
c906108c | 10636 | static int |
a9634178 | 10637 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
10638 | { |
10639 | int found_memory_cnt = 0; | |
2e70b7b9 | 10640 | struct value *head = v; |
c906108c SS |
10641 | |
10642 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 10643 | if (!can_use_hw_watchpoints) |
c906108c | 10644 | return 0; |
c5aa993b | 10645 | |
5c44784c JM |
10646 | /* Make sure that the value of the expression depends only upon |
10647 | memory contents, and values computed from them within GDB. If we | |
10648 | find any register references or function calls, we can't use a | |
10649 | hardware watchpoint. | |
10650 | ||
10651 | The idea here is that evaluating an expression generates a series | |
10652 | of values, one holding the value of every subexpression. (The | |
10653 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
10654 | a*b+c.) GDB's values hold almost enough information to establish | |
10655 | the criteria given above --- they identify memory lvalues, | |
10656 | register lvalues, computed values, etcetera. So we can evaluate | |
10657 | the expression, and then scan the chain of values that leaves | |
10658 | behind to decide whether we can detect any possible change to the | |
10659 | expression's final value using only hardware watchpoints. | |
10660 | ||
10661 | However, I don't think that the values returned by inferior | |
10662 | function calls are special in any way. So this function may not | |
10663 | notice that an expression involving an inferior function call | |
10664 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 10665 | for (; v; v = value_next (v)) |
c906108c | 10666 | { |
5c44784c | 10667 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 10668 | { |
8464be76 DJ |
10669 | if (v != head && value_lazy (v)) |
10670 | /* A lazy memory lvalue in the chain is one that GDB never | |
10671 | needed to fetch; we either just used its address (e.g., | |
10672 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
10673 | in `a,b'). This doesn't apply to HEAD; if that is | |
10674 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 10675 | ; |
53a5351d | 10676 | else |
5c44784c JM |
10677 | { |
10678 | /* Ahh, memory we actually used! Check if we can cover | |
10679 | it with hardware watchpoints. */ | |
df407dfe | 10680 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
10681 | |
10682 | /* We only watch structs and arrays if user asked for it | |
10683 | explicitly, never if they just happen to appear in a | |
10684 | middle of some value chain. */ | |
10685 | if (v == head | |
10686 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
10687 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
10688 | { | |
42ae5230 | 10689 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
10690 | int len; |
10691 | int num_regs; | |
10692 | ||
a9634178 | 10693 | len = (target_exact_watchpoints |
e09342b5 TJB |
10694 | && is_scalar_type_recursive (vtype))? |
10695 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 10696 | |
e09342b5 TJB |
10697 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
10698 | if (!num_regs) | |
2e70b7b9 MS |
10699 | return 0; |
10700 | else | |
e09342b5 | 10701 | found_memory_cnt += num_regs; |
2e70b7b9 | 10702 | } |
5c44784c | 10703 | } |
c5aa993b | 10704 | } |
5086187c AC |
10705 | else if (VALUE_LVAL (v) != not_lval |
10706 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 10707 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 10708 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 10709 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
10710 | } |
10711 | ||
10712 | /* The expression itself looks suitable for using a hardware | |
10713 | watchpoint, but give the target machine a chance to reject it. */ | |
10714 | return found_memory_cnt; | |
10715 | } | |
10716 | ||
8b93c638 | 10717 | void |
84f4c1fe | 10718 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 10719 | { |
84f4c1fe | 10720 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
10721 | } |
10722 | ||
10723 | /* A helper function that looks for an argument at the start of a | |
10724 | string. The argument must also either be at the end of the string, | |
10725 | or be followed by whitespace. Returns 1 if it finds the argument, | |
10726 | 0 otherwise. If the argument is found, it updates *STR. */ | |
10727 | ||
10728 | static int | |
10729 | check_for_argument (char **str, char *arg, int arg_len) | |
10730 | { | |
10731 | if (strncmp (*str, arg, arg_len) == 0 | |
10732 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
10733 | { | |
10734 | *str += arg_len; | |
10735 | return 1; | |
10736 | } | |
10737 | return 0; | |
10738 | } | |
10739 | ||
10740 | /* A helper function that looks for the "-location" argument and then | |
10741 | calls watch_command_1. */ | |
10742 | ||
10743 | static void | |
10744 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
10745 | { | |
10746 | int just_location = 0; | |
10747 | ||
10748 | if (arg | |
10749 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
10750 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
10751 | { | |
e9cafbcc | 10752 | arg = skip_spaces (arg); |
06a64a0b TT |
10753 | just_location = 1; |
10754 | } | |
10755 | ||
84f4c1fe | 10756 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 10757 | } |
8926118c | 10758 | |
c5aa993b | 10759 | static void |
fba45db2 | 10760 | watch_command (char *arg, int from_tty) |
c906108c | 10761 | { |
06a64a0b | 10762 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
10763 | } |
10764 | ||
8b93c638 | 10765 | void |
84f4c1fe | 10766 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 10767 | { |
84f4c1fe | 10768 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 10769 | } |
8926118c | 10770 | |
c5aa993b | 10771 | static void |
fba45db2 | 10772 | rwatch_command (char *arg, int from_tty) |
c906108c | 10773 | { |
06a64a0b | 10774 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
10775 | } |
10776 | ||
8b93c638 | 10777 | void |
84f4c1fe | 10778 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 10779 | { |
84f4c1fe | 10780 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 10781 | } |
8926118c | 10782 | |
c5aa993b | 10783 | static void |
fba45db2 | 10784 | awatch_command (char *arg, int from_tty) |
c906108c | 10785 | { |
06a64a0b | 10786 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 10787 | } |
c906108c | 10788 | \f |
c5aa993b | 10789 | |
43ff13b4 | 10790 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
10791 | because it uses the mechanisms of breakpoints. */ |
10792 | ||
bfec99b2 PA |
10793 | struct until_break_command_continuation_args |
10794 | { | |
10795 | struct breakpoint *breakpoint; | |
10796 | struct breakpoint *breakpoint2; | |
186c406b | 10797 | int thread_num; |
bfec99b2 PA |
10798 | }; |
10799 | ||
43ff13b4 | 10800 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 10801 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 10802 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 10803 | command. */ |
c2c6d25f | 10804 | static void |
fa4cd53f | 10805 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 10806 | { |
bfec99b2 PA |
10807 | struct until_break_command_continuation_args *a = arg; |
10808 | ||
10809 | delete_breakpoint (a->breakpoint); | |
10810 | if (a->breakpoint2) | |
10811 | delete_breakpoint (a->breakpoint2); | |
186c406b | 10812 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
10813 | } |
10814 | ||
c906108c | 10815 | void |
ae66c1fc | 10816 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
10817 | { |
10818 | struct symtabs_and_lines sals; | |
10819 | struct symtab_and_line sal; | |
206415a3 | 10820 | struct frame_info *frame = get_selected_frame (NULL); |
883bc8d1 PA |
10821 | struct gdbarch *frame_gdbarch = get_frame_arch (frame); |
10822 | struct frame_id stack_frame_id = get_stack_frame_id (frame); | |
10823 | struct frame_id caller_frame_id = frame_unwind_caller_id (frame); | |
c906108c | 10824 | struct breakpoint *breakpoint; |
f107f563 | 10825 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 10826 | struct cleanup *old_chain; |
186c406b TT |
10827 | int thread; |
10828 | struct thread_info *tp; | |
c906108c SS |
10829 | |
10830 | clear_proceed_status (); | |
10831 | ||
10832 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 10833 | this function. */ |
c5aa993b | 10834 | |
1bfeeb0f | 10835 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 10836 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 10837 | get_last_displayed_symtab (), |
f8eba3c6 | 10838 | get_last_displayed_line ()); |
c906108c | 10839 | else |
f8eba3c6 TT |
10840 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
10841 | (struct symtab *) NULL, 0); | |
c5aa993b | 10842 | |
c906108c | 10843 | if (sals.nelts != 1) |
8a3fe4f8 | 10844 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 10845 | |
c906108c | 10846 | sal = sals.sals[0]; |
4a64f543 | 10847 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 10848 | |
c906108c | 10849 | if (*arg) |
8a3fe4f8 | 10850 | error (_("Junk at end of arguments.")); |
c5aa993b | 10851 | |
c906108c | 10852 | resolve_sal_pc (&sal); |
c5aa993b | 10853 | |
186c406b TT |
10854 | tp = inferior_thread (); |
10855 | thread = tp->num; | |
10856 | ||
883bc8d1 PA |
10857 | old_chain = make_cleanup (null_cleanup, NULL); |
10858 | ||
10859 | /* Installing a breakpoint invalidates the frame chain (as it may | |
10860 | need to switch threads), so do any frame handling first. */ | |
10861 | ||
ae66c1fc EZ |
10862 | /* Keep within the current frame, or in frames called by the current |
10863 | one. */ | |
edb3359d | 10864 | |
883bc8d1 | 10865 | if (frame_id_p (caller_frame_id)) |
c906108c | 10866 | { |
883bc8d1 PA |
10867 | struct symtab_and_line sal2; |
10868 | ||
10869 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
10870 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 10871 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
10872 | sal2, |
10873 | caller_frame_id, | |
f107f563 VP |
10874 | bp_until); |
10875 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 10876 | |
883bc8d1 | 10877 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 10878 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 10879 | } |
c5aa993b | 10880 | |
c70a6932 JK |
10881 | /* set_momentary_breakpoint could invalidate FRAME. */ |
10882 | frame = NULL; | |
10883 | ||
883bc8d1 PA |
10884 | if (anywhere) |
10885 | /* If the user told us to continue until a specified location, | |
10886 | we don't specify a frame at which we need to stop. */ | |
10887 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
10888 | null_frame_id, bp_until); | |
10889 | else | |
10890 | /* Otherwise, specify the selected frame, because we want to stop | |
10891 | only at the very same frame. */ | |
10892 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
10893 | stack_frame_id, bp_until); | |
10894 | make_cleanup_delete_breakpoint (breakpoint); | |
10895 | ||
c906108c | 10896 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 10897 | |
4a64f543 MS |
10898 | /* If we are running asynchronously, and proceed call above has |
10899 | actually managed to start the target, arrange for breakpoints to | |
10900 | be deleted when the target stops. Otherwise, we're already | |
10901 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 10902 | |
8ea051c5 | 10903 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 10904 | { |
bfec99b2 PA |
10905 | struct until_break_command_continuation_args *args; |
10906 | args = xmalloc (sizeof (*args)); | |
f107f563 | 10907 | |
bfec99b2 PA |
10908 | args->breakpoint = breakpoint; |
10909 | args->breakpoint2 = breakpoint2; | |
186c406b | 10910 | args->thread_num = thread; |
f107f563 VP |
10911 | |
10912 | discard_cleanups (old_chain); | |
95e54da7 PA |
10913 | add_continuation (inferior_thread (), |
10914 | until_break_command_continuation, args, | |
604ead4a | 10915 | xfree); |
f107f563 VP |
10916 | } |
10917 | else | |
c5aa993b | 10918 | do_cleanups (old_chain); |
c906108c | 10919 | } |
ae66c1fc | 10920 | |
c906108c SS |
10921 | /* This function attempts to parse an optional "if <cond>" clause |
10922 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 10923 | |
c906108c SS |
10924 | Else, it returns a pointer to the condition string. (It does not |
10925 | attempt to evaluate the string against a particular block.) And, | |
10926 | it updates arg to point to the first character following the parsed | |
4a64f543 | 10927 | if clause in the arg string. */ |
53a5351d | 10928 | |
c906108c | 10929 | static char * |
fba45db2 | 10930 | ep_parse_optional_if_clause (char **arg) |
c906108c | 10931 | { |
c5aa993b JM |
10932 | char *cond_string; |
10933 | ||
10934 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 10935 | return NULL; |
c5aa993b | 10936 | |
4a64f543 | 10937 | /* Skip the "if" keyword. */ |
c906108c | 10938 | (*arg) += 2; |
c5aa993b | 10939 | |
c906108c | 10940 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 10941 | condition string. */ |
e9cafbcc | 10942 | *arg = skip_spaces (*arg); |
c906108c | 10943 | cond_string = *arg; |
c5aa993b | 10944 | |
4a64f543 MS |
10945 | /* Assume that the condition occupies the remainder of the arg |
10946 | string. */ | |
c906108c | 10947 | (*arg) += strlen (cond_string); |
c5aa993b | 10948 | |
c906108c SS |
10949 | return cond_string; |
10950 | } | |
c5aa993b | 10951 | |
c906108c SS |
10952 | /* Commands to deal with catching events, such as signals, exceptions, |
10953 | process start/exit, etc. */ | |
c5aa993b JM |
10954 | |
10955 | typedef enum | |
10956 | { | |
44feb3ce TT |
10957 | catch_fork_temporary, catch_vfork_temporary, |
10958 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
10959 | } |
10960 | catch_fork_kind; | |
10961 | ||
c906108c | 10962 | static void |
cc59ec59 MS |
10963 | catch_fork_command_1 (char *arg, int from_tty, |
10964 | struct cmd_list_element *command) | |
c906108c | 10965 | { |
a6d9a66e | 10966 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 10967 | char *cond_string = NULL; |
44feb3ce TT |
10968 | catch_fork_kind fork_kind; |
10969 | int tempflag; | |
10970 | ||
10971 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
10972 | tempflag = (fork_kind == catch_fork_temporary | |
10973 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 10974 | |
44feb3ce TT |
10975 | if (!arg) |
10976 | arg = ""; | |
e9cafbcc | 10977 | arg = skip_spaces (arg); |
c5aa993b | 10978 | |
c906108c | 10979 | /* The allowed syntax is: |
c5aa993b JM |
10980 | catch [v]fork |
10981 | catch [v]fork if <cond> | |
10982 | ||
4a64f543 | 10983 | First, check if there's an if clause. */ |
c906108c | 10984 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 10985 | |
c906108c | 10986 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 10987 | error (_("Junk at end of arguments.")); |
c5aa993b | 10988 | |
c906108c | 10989 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 10990 | and enable reporting of such events. */ |
c5aa993b JM |
10991 | switch (fork_kind) |
10992 | { | |
44feb3ce TT |
10993 | case catch_fork_temporary: |
10994 | case catch_fork_permanent: | |
a6d9a66e | 10995 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 10996 | &catch_fork_breakpoint_ops); |
c906108c | 10997 | break; |
44feb3ce TT |
10998 | case catch_vfork_temporary: |
10999 | case catch_vfork_permanent: | |
a6d9a66e | 11000 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11001 | &catch_vfork_breakpoint_ops); |
c906108c | 11002 | break; |
c5aa993b | 11003 | default: |
8a3fe4f8 | 11004 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11005 | break; |
c5aa993b | 11006 | } |
c906108c SS |
11007 | } |
11008 | ||
11009 | static void | |
cc59ec59 MS |
11010 | catch_exec_command_1 (char *arg, int from_tty, |
11011 | struct cmd_list_element *command) | |
c906108c | 11012 | { |
b4d90040 | 11013 | struct exec_catchpoint *c; |
a6d9a66e | 11014 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11015 | int tempflag; |
c5aa993b | 11016 | char *cond_string = NULL; |
c906108c | 11017 | |
44feb3ce TT |
11018 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11019 | ||
11020 | if (!arg) | |
11021 | arg = ""; | |
e9cafbcc | 11022 | arg = skip_spaces (arg); |
c906108c SS |
11023 | |
11024 | /* The allowed syntax is: | |
c5aa993b JM |
11025 | catch exec |
11026 | catch exec if <cond> | |
c906108c | 11027 | |
4a64f543 | 11028 | First, check if there's an if clause. */ |
c906108c SS |
11029 | cond_string = ep_parse_optional_if_clause (&arg); |
11030 | ||
11031 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11032 | error (_("Junk at end of arguments.")); |
c906108c | 11033 | |
b4d90040 PA |
11034 | c = XNEW (struct exec_catchpoint); |
11035 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11036 | &catch_exec_breakpoint_ops); | |
11037 | c->exec_pathname = NULL; | |
11038 | ||
3ea46bff | 11039 | install_breakpoint (0, &c->base, 1); |
c906108c | 11040 | } |
c5aa993b | 11041 | |
3086aeae | 11042 | static enum print_stop_action |
348d480f | 11043 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 11044 | { |
79a45e25 | 11045 | struct ui_out *uiout = current_uiout; |
348d480f | 11046 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 11047 | int bp_temp, bp_throw; |
3086aeae | 11048 | |
ade92717 | 11049 | annotate_catchpoint (b->number); |
3086aeae | 11050 | |
ade92717 AR |
11051 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11052 | if (b->loc->address != b->loc->requested_address) | |
11053 | breakpoint_adjustment_warning (b->loc->requested_address, | |
11054 | b->loc->address, | |
11055 | b->number, 1); | |
df2b6d2d | 11056 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11057 | ui_out_text (uiout, |
11058 | bp_temp ? "Temporary catchpoint " | |
11059 | : "Catchpoint "); | |
11060 | if (!ui_out_is_mi_like_p (uiout)) | |
11061 | ui_out_field_int (uiout, "bkptno", b->number); | |
11062 | ui_out_text (uiout, | |
c0b37c48 AR |
11063 | bp_throw ? " (exception thrown), " |
11064 | : " (exception caught), "); | |
ade92717 AR |
11065 | if (ui_out_is_mi_like_p (uiout)) |
11066 | { | |
11067 | ui_out_field_string (uiout, "reason", | |
11068 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11069 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
11070 | ui_out_field_int (uiout, "bkptno", b->number); | |
11071 | } | |
3086aeae DJ |
11072 | return PRINT_SRC_AND_LOC; |
11073 | } | |
11074 | ||
11075 | static void | |
cc59ec59 MS |
11076 | print_one_exception_catchpoint (struct breakpoint *b, |
11077 | struct bp_location **last_loc) | |
3086aeae | 11078 | { |
79a45b7d | 11079 | struct value_print_options opts; |
79a45e25 | 11080 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 11081 | |
79a45b7d TT |
11082 | get_user_print_options (&opts); |
11083 | if (opts.addressprint) | |
3086aeae DJ |
11084 | { |
11085 | annotate_field (4); | |
604133b5 AR |
11086 | if (b->loc == NULL || b->loc->shlib_disabled) |
11087 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
11088 | else | |
5af949e3 UW |
11089 | ui_out_field_core_addr (uiout, "addr", |
11090 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
11091 | } |
11092 | annotate_field (5); | |
604133b5 | 11093 | if (b->loc) |
a6d9a66e | 11094 | *last_loc = b->loc; |
3086aeae DJ |
11095 | if (strstr (b->addr_string, "throw") != NULL) |
11096 | ui_out_field_string (uiout, "what", "exception throw"); | |
11097 | else | |
11098 | ui_out_field_string (uiout, "what", "exception catch"); | |
11099 | } | |
11100 | ||
11101 | static void | |
11102 | print_mention_exception_catchpoint (struct breakpoint *b) | |
11103 | { | |
79a45e25 | 11104 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
11105 | int bp_temp; |
11106 | int bp_throw; | |
11107 | ||
df2b6d2d | 11108 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11109 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11110 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
11111 | : _("Catchpoint ")); | |
11112 | ui_out_field_int (uiout, "bkptno", b->number); | |
11113 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
11114 | : _(" (catch)")); | |
3086aeae DJ |
11115 | } |
11116 | ||
6149aea9 PA |
11117 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
11118 | catch catchpoints. */ | |
11119 | ||
11120 | static void | |
4a64f543 MS |
11121 | print_recreate_exception_catchpoint (struct breakpoint *b, |
11122 | struct ui_file *fp) | |
6149aea9 PA |
11123 | { |
11124 | int bp_temp; | |
11125 | int bp_throw; | |
11126 | ||
11127 | bp_temp = b->disposition == disp_del; | |
11128 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
11129 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
11130 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 11131 | print_recreate_thread (b, fp); |
6149aea9 PA |
11132 | } |
11133 | ||
2060206e | 11134 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
11135 | |
11136 | static int | |
11137 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
11138 | enum exception_event_kind ex_event, int from_tty) | |
11139 | { | |
604133b5 AR |
11140 | char *trigger_func_name; |
11141 | ||
3086aeae | 11142 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 11143 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 11144 | else |
604133b5 | 11145 | trigger_func_name = "__cxa_throw"; |
3086aeae | 11146 | |
8cdf0e15 | 11147 | create_breakpoint (get_current_arch (), |
e7e0cddf | 11148 | trigger_func_name, cond_string, -1, NULL, |
8cdf0e15 | 11149 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 11150 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
11151 | 0, |
11152 | AUTO_BOOLEAN_TRUE /* pending */, | |
11153 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe | 11154 | 1 /* enabled */, |
44f238bb PA |
11155 | 0 /* internal */, |
11156 | 0); | |
3086aeae | 11157 | |
3086aeae DJ |
11158 | return 1; |
11159 | } | |
11160 | ||
4a64f543 | 11161 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
11162 | |
11163 | static void | |
fba45db2 KB |
11164 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
11165 | int tempflag, int from_tty) | |
c906108c | 11166 | { |
c5aa993b | 11167 | char *cond_string = NULL; |
c5aa993b | 11168 | |
44feb3ce TT |
11169 | if (!arg) |
11170 | arg = ""; | |
e9cafbcc | 11171 | arg = skip_spaces (arg); |
c5aa993b | 11172 | |
c906108c SS |
11173 | cond_string = ep_parse_optional_if_clause (&arg); |
11174 | ||
11175 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11176 | error (_("Junk at end of arguments.")); |
c906108c | 11177 | |
059fb39f PM |
11178 | if (ex_event != EX_EVENT_THROW |
11179 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 11180 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 11181 | |
3086aeae DJ |
11182 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
11183 | return; | |
11184 | ||
8a3fe4f8 | 11185 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
11186 | } |
11187 | ||
44feb3ce TT |
11188 | /* Implementation of "catch catch" command. */ |
11189 | ||
11190 | static void | |
11191 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11192 | { | |
11193 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11194 | |
44feb3ce TT |
11195 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
11196 | } | |
11197 | ||
11198 | /* Implementation of "catch throw" command. */ | |
11199 | ||
11200 | static void | |
11201 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11202 | { | |
11203 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11204 | |
44feb3ce TT |
11205 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
11206 | } | |
11207 | ||
9ac4176b | 11208 | void |
28010a5d PA |
11209 | init_ada_exception_breakpoint (struct breakpoint *b, |
11210 | struct gdbarch *gdbarch, | |
11211 | struct symtab_and_line sal, | |
11212 | char *addr_string, | |
c0a91b2b | 11213 | const struct breakpoint_ops *ops, |
28010a5d PA |
11214 | int tempflag, |
11215 | int from_tty) | |
f7f9143b | 11216 | { |
f7f9143b JB |
11217 | if (from_tty) |
11218 | { | |
5af949e3 UW |
11219 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11220 | if (!loc_gdbarch) | |
11221 | loc_gdbarch = gdbarch; | |
11222 | ||
6c95b8df PA |
11223 | describe_other_breakpoints (loc_gdbarch, |
11224 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11225 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11226 | version for exception catchpoints, because two catchpoints | |
11227 | used for different exception names will use the same address. | |
11228 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11229 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11230 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11231 | the user what type of catchpoint it is. The above is good |
11232 | enough for now, though. */ | |
11233 | } | |
11234 | ||
28010a5d | 11235 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
11236 | |
11237 | b->enable_state = bp_enabled; | |
11238 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
11239 | b->addr_string = addr_string; |
11240 | b->language = language_ada; | |
f7f9143b JB |
11241 | } |
11242 | ||
a96d9b2e SDJ |
11243 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
11244 | filter list, or NULL if no filtering is required. */ | |
11245 | static VEC(int) * | |
11246 | catch_syscall_split_args (char *arg) | |
11247 | { | |
11248 | VEC(int) *result = NULL; | |
29d0bb3d | 11249 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
11250 | |
11251 | while (*arg != '\0') | |
11252 | { | |
11253 | int i, syscall_number; | |
11254 | char *endptr; | |
11255 | char cur_name[128]; | |
11256 | struct syscall s; | |
11257 | ||
11258 | /* Skip whitespace. */ | |
11259 | while (isspace (*arg)) | |
11260 | arg++; | |
11261 | ||
11262 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
11263 | cur_name[i] = arg[i]; | |
11264 | cur_name[i] = '\0'; | |
11265 | arg += i; | |
11266 | ||
11267 | /* Check if the user provided a syscall name or a number. */ | |
11268 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
11269 | if (*endptr == '\0') | |
bccd0dd2 | 11270 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
11271 | else |
11272 | { | |
11273 | /* We have a name. Let's check if it's valid and convert it | |
11274 | to a number. */ | |
11275 | get_syscall_by_name (cur_name, &s); | |
11276 | ||
11277 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
11278 | /* Here we have to issue an error instead of a warning, |
11279 | because GDB cannot do anything useful if there's no | |
11280 | syscall number to be caught. */ | |
a96d9b2e SDJ |
11281 | error (_("Unknown syscall name '%s'."), cur_name); |
11282 | } | |
11283 | ||
11284 | /* Ok, it's valid. */ | |
11285 | VEC_safe_push (int, result, s.number); | |
11286 | } | |
11287 | ||
11288 | discard_cleanups (cleanup); | |
11289 | return result; | |
11290 | } | |
11291 | ||
11292 | /* Implement the "catch syscall" command. */ | |
11293 | ||
11294 | static void | |
cc59ec59 MS |
11295 | catch_syscall_command_1 (char *arg, int from_tty, |
11296 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
11297 | { |
11298 | int tempflag; | |
11299 | VEC(int) *filter; | |
11300 | struct syscall s; | |
11301 | struct gdbarch *gdbarch = get_current_arch (); | |
11302 | ||
11303 | /* Checking if the feature if supported. */ | |
11304 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
11305 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 11306 | this architecture yet.")); |
a96d9b2e SDJ |
11307 | |
11308 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
11309 | ||
e9cafbcc | 11310 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11311 | |
11312 | /* We need to do this first "dummy" translation in order | |
11313 | to get the syscall XML file loaded or, most important, | |
11314 | to display a warning to the user if there's no XML file | |
11315 | for his/her architecture. */ | |
11316 | get_syscall_by_number (0, &s); | |
11317 | ||
11318 | /* The allowed syntax is: | |
11319 | catch syscall | |
11320 | catch syscall <name | number> [<name | number> ... <name | number>] | |
11321 | ||
11322 | Let's check if there's a syscall name. */ | |
11323 | ||
11324 | if (arg != NULL) | |
11325 | filter = catch_syscall_split_args (arg); | |
11326 | else | |
11327 | filter = NULL; | |
11328 | ||
11329 | create_syscall_event_catchpoint (tempflag, filter, | |
11330 | &catch_syscall_breakpoint_ops); | |
11331 | } | |
11332 | ||
c906108c | 11333 | static void |
fba45db2 | 11334 | catch_command (char *arg, int from_tty) |
c906108c | 11335 | { |
44feb3ce | 11336 | error (_("Catch requires an event name.")); |
c906108c SS |
11337 | } |
11338 | \f | |
11339 | ||
11340 | static void | |
fba45db2 | 11341 | tcatch_command (char *arg, int from_tty) |
c906108c | 11342 | { |
44feb3ce | 11343 | error (_("Catch requires an event name.")); |
c906108c SS |
11344 | } |
11345 | ||
8a2c437b TT |
11346 | /* A qsort comparison function that sorts breakpoints in order. */ |
11347 | ||
11348 | static int | |
11349 | compare_breakpoints (const void *a, const void *b) | |
11350 | { | |
11351 | const breakpoint_p *ba = a; | |
11352 | uintptr_t ua = (uintptr_t) *ba; | |
11353 | const breakpoint_p *bb = b; | |
11354 | uintptr_t ub = (uintptr_t) *bb; | |
11355 | ||
11356 | if ((*ba)->number < (*bb)->number) | |
11357 | return -1; | |
11358 | else if ((*ba)->number > (*bb)->number) | |
11359 | return 1; | |
11360 | ||
11361 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11362 | the number 0. */ | |
11363 | if (ua < ub) | |
11364 | return -1; | |
11365 | return ub > ub ? 1 : 0; | |
11366 | } | |
11367 | ||
80f8a6eb | 11368 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11369 | |
11370 | static void | |
fba45db2 | 11371 | clear_command (char *arg, int from_tty) |
c906108c | 11372 | { |
8a2c437b | 11373 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11374 | VEC(breakpoint_p) *found = 0; |
11375 | int ix; | |
c906108c SS |
11376 | int default_match; |
11377 | struct symtabs_and_lines sals; | |
11378 | struct symtab_and_line sal; | |
c906108c | 11379 | int i; |
8a2c437b | 11380 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11381 | |
11382 | if (arg) | |
11383 | { | |
f8eba3c6 TT |
11384 | sals = decode_line_spec (arg, (DECODE_LINE_FUNFIRSTLINE |
11385 | | DECODE_LINE_LIST_MODE)); | |
c906108c SS |
11386 | default_match = 0; |
11387 | } | |
11388 | else | |
11389 | { | |
c5aa993b | 11390 | sals.sals = (struct symtab_and_line *) |
c906108c | 11391 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11392 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11393 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11394 | |
11395 | /* Set sal's line, symtab, pc, and pspace to the values | |
11396 | corresponding to the last call to print_frame_info. If the | |
11397 | codepoint is not valid, this will set all the fields to 0. */ | |
11398 | get_last_displayed_sal (&sal); | |
c906108c | 11399 | if (sal.symtab == 0) |
8a3fe4f8 | 11400 | error (_("No source file specified.")); |
c906108c SS |
11401 | |
11402 | sals.sals[0] = sal; | |
11403 | sals.nelts = 1; | |
11404 | ||
11405 | default_match = 1; | |
11406 | } | |
11407 | ||
4a64f543 MS |
11408 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11409 | seems, because all existing breakpoints typically have both | |
11410 | file/line and pc set. So, if clear is given file/line, we can | |
11411 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11412 | |
11413 | We only support clearing given the address explicitly | |
11414 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11415 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11416 | due to optimization, all in one block. |
4a64f543 MS |
11417 | |
11418 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11419 | PC corresponding to the same file:line, the breakpoint won't |
11420 | be cleared. We probably can still clear the breakpoint, but | |
11421 | since the other PC value is never presented to user, user | |
11422 | can only find it by guessing, and it does not seem important | |
11423 | to support that. */ | |
11424 | ||
4a64f543 MS |
11425 | /* For each line spec given, delete bps which correspond to it. Do |
11426 | it in two passes, solely to preserve the current behavior that | |
11427 | from_tty is forced true if we delete more than one | |
11428 | breakpoint. */ | |
c906108c | 11429 | |
80f8a6eb | 11430 | found = NULL; |
8a2c437b | 11431 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11432 | for (i = 0; i < sals.nelts; i++) |
11433 | { | |
4aac40c8 TT |
11434 | int is_abs, sal_name_len; |
11435 | ||
c906108c | 11436 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11437 | If line given (pc == 0), clear all bpts on specified line. |
11438 | If defaulting, clear all bpts on default line | |
c906108c | 11439 | or at default pc. |
c5aa993b JM |
11440 | |
11441 | defaulting sal.pc != 0 tests to do | |
11442 | ||
11443 | 0 1 pc | |
11444 | 1 1 pc _and_ line | |
11445 | 0 0 line | |
11446 | 1 0 <can't happen> */ | |
c906108c SS |
11447 | |
11448 | sal = sals.sals[i]; | |
4aac40c8 TT |
11449 | is_abs = sal.symtab == NULL ? 1 : IS_ABSOLUTE_PATH (sal.symtab->filename); |
11450 | sal_name_len = is_abs ? 0 : strlen (sal.symtab->filename); | |
c906108c | 11451 | |
4a64f543 | 11452 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11453 | ALL_BREAKPOINTS (b) |
c5aa993b | 11454 | { |
0d381245 | 11455 | int match = 0; |
4a64f543 | 11456 | /* Are we going to delete b? */ |
cc60f2e3 | 11457 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11458 | { |
11459 | struct bp_location *loc = b->loc; | |
11460 | for (; loc; loc = loc->next) | |
11461 | { | |
f8eba3c6 TT |
11462 | /* If the user specified file:line, don't allow a PC |
11463 | match. This matches historical gdb behavior. */ | |
11464 | int pc_match = (!sal.explicit_line | |
11465 | && sal.pc | |
11466 | && (loc->pspace == sal.pspace) | |
11467 | && (loc->address == sal.pc) | |
11468 | && (!section_is_overlay (loc->section) | |
11469 | || loc->section == sal.section)); | |
4aac40c8 TT |
11470 | int line_match = 0; |
11471 | ||
11472 | if ((default_match || sal.explicit_line) | |
11473 | && loc->source_file != NULL | |
11474 | && sal.symtab != NULL | |
11475 | && sal.pspace == loc->pspace | |
11476 | && loc->line_number == sal.line) | |
11477 | { | |
11478 | if (filename_cmp (loc->source_file, | |
11479 | sal.symtab->filename) == 0) | |
11480 | line_match = 1; | |
11481 | else if (!IS_ABSOLUTE_PATH (sal.symtab->filename) | |
11482 | && compare_filenames_for_search (loc->source_file, | |
11483 | sal.symtab->filename, | |
11484 | sal_name_len)) | |
11485 | line_match = 1; | |
11486 | } | |
11487 | ||
0d381245 VP |
11488 | if (pc_match || line_match) |
11489 | { | |
11490 | match = 1; | |
11491 | break; | |
11492 | } | |
11493 | } | |
11494 | } | |
11495 | ||
11496 | if (match) | |
d6e956e5 | 11497 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11498 | } |
80f8a6eb | 11499 | } |
8a2c437b | 11500 | |
80f8a6eb | 11501 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11502 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11503 | { |
11504 | if (arg) | |
8a3fe4f8 | 11505 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11506 | else |
8a3fe4f8 | 11507 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11508 | } |
c906108c | 11509 | |
8a2c437b TT |
11510 | /* Remove duplicates from the vec. */ |
11511 | qsort (VEC_address (breakpoint_p, found), | |
11512 | VEC_length (breakpoint_p, found), | |
11513 | sizeof (breakpoint_p), | |
11514 | compare_breakpoints); | |
11515 | prev = VEC_index (breakpoint_p, found, 0); | |
11516 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11517 | { | |
11518 | if (b == prev) | |
11519 | { | |
11520 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11521 | --ix; | |
11522 | } | |
11523 | } | |
11524 | ||
d6e956e5 | 11525 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11526 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11527 | if (from_tty) |
a3f17187 | 11528 | { |
d6e956e5 | 11529 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11530 | printf_unfiltered (_("Deleted breakpoint ")); |
11531 | else | |
11532 | printf_unfiltered (_("Deleted breakpoints ")); | |
11533 | } | |
80f8a6eb | 11534 | breakpoints_changed (); |
d6e956e5 VP |
11535 | |
11536 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11537 | { |
c5aa993b | 11538 | if (from_tty) |
d6e956e5 VP |
11539 | printf_unfiltered ("%d ", b->number); |
11540 | delete_breakpoint (b); | |
c906108c | 11541 | } |
80f8a6eb MS |
11542 | if (from_tty) |
11543 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11544 | |
11545 | do_cleanups (cleanups); | |
c906108c SS |
11546 | } |
11547 | \f | |
11548 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11549 | all breakpoints that are marked for deletion, whether hit or not. | |
11550 | This is called after any breakpoint is hit, or after errors. */ | |
11551 | ||
11552 | void | |
fba45db2 | 11553 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11554 | { |
35df4500 | 11555 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11556 | |
11557 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11558 | if (bs->breakpoint_at |
11559 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11560 | && bs->stop) |
f431efe5 | 11561 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11562 | |
35df4500 | 11563 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11564 | { |
b5de0fa7 | 11565 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11566 | delete_breakpoint (b); |
11567 | } | |
c906108c SS |
11568 | } |
11569 | ||
4a64f543 MS |
11570 | /* A comparison function for bp_location AP and BP being interfaced to |
11571 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11572 | does breakpoint_address_is_meaningful say for its OWNER), | |
11573 | secondarily by ordering first bp_permanent OWNERed elements and | |
11574 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 11575 | qsort being an unstable algorithm. */ |
876fa593 JK |
11576 | |
11577 | static int | |
494cfb0f | 11578 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 11579 | { |
494cfb0f JK |
11580 | struct bp_location *a = *(void **) ap; |
11581 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 11582 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
11583 | int a_perm = a->owner->enable_state == bp_permanent; |
11584 | int b_perm = b->owner->enable_state == bp_permanent; | |
11585 | ||
11586 | if (a->address != b->address) | |
11587 | return (a->address > b->address) - (a->address < b->address); | |
11588 | ||
dea2aa5f LM |
11589 | /* Sort locations at the same address by their pspace number, keeping |
11590 | locations of the same inferior (in a multi-inferior environment) | |
11591 | grouped. */ | |
11592 | ||
11593 | if (a->pspace->num != b->pspace->num) | |
11594 | return ((a->pspace->num > b->pspace->num) | |
11595 | - (a->pspace->num < b->pspace->num)); | |
11596 | ||
876fa593 JK |
11597 | /* Sort permanent breakpoints first. */ |
11598 | if (a_perm != b_perm) | |
11599 | return (a_perm < b_perm) - (a_perm > b_perm); | |
11600 | ||
c56a97f9 JK |
11601 | /* Make the internal GDB representation stable across GDB runs |
11602 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11603 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11604 | |
11605 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11606 | return ((a->owner->number > b->owner->number) |
11607 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11608 | |
11609 | return (a > b) - (a < b); | |
11610 | } | |
11611 | ||
876fa593 | 11612 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
11613 | bp_location_shadow_len_after_address_max according to the current |
11614 | content of the bp_location array. */ | |
f7545552 TT |
11615 | |
11616 | static void | |
876fa593 | 11617 | bp_location_target_extensions_update (void) |
f7545552 | 11618 | { |
876fa593 JK |
11619 | struct bp_location *bl, **blp_tmp; |
11620 | ||
11621 | bp_location_placed_address_before_address_max = 0; | |
11622 | bp_location_shadow_len_after_address_max = 0; | |
11623 | ||
11624 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11625 | { | |
11626 | CORE_ADDR start, end, addr; | |
11627 | ||
11628 | if (!bp_location_has_shadow (bl)) | |
11629 | continue; | |
11630 | ||
11631 | start = bl->target_info.placed_address; | |
11632 | end = start + bl->target_info.shadow_len; | |
11633 | ||
11634 | gdb_assert (bl->address >= start); | |
11635 | addr = bl->address - start; | |
11636 | if (addr > bp_location_placed_address_before_address_max) | |
11637 | bp_location_placed_address_before_address_max = addr; | |
11638 | ||
11639 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11640 | ||
11641 | gdb_assert (bl->address < end); | |
11642 | addr = end - bl->address; | |
11643 | if (addr > bp_location_shadow_len_after_address_max) | |
11644 | bp_location_shadow_len_after_address_max = addr; | |
11645 | } | |
f7545552 TT |
11646 | } |
11647 | ||
1e4d1764 YQ |
11648 | /* Download tracepoint locations if they haven't been. */ |
11649 | ||
11650 | static void | |
11651 | download_tracepoint_locations (void) | |
11652 | { | |
11653 | struct bp_location *bl, **blp_tmp; | |
11654 | struct cleanup *old_chain; | |
11655 | ||
11656 | if (!target_can_download_tracepoint ()) | |
11657 | return; | |
11658 | ||
11659 | old_chain = save_current_space_and_thread (); | |
11660 | ||
11661 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11662 | { | |
11663 | struct tracepoint *t; | |
11664 | ||
11665 | if (!is_tracepoint (bl->owner)) | |
11666 | continue; | |
11667 | ||
11668 | if ((bl->owner->type == bp_fast_tracepoint | |
11669 | ? !may_insert_fast_tracepoints | |
11670 | : !may_insert_tracepoints)) | |
11671 | continue; | |
11672 | ||
11673 | /* In tracepoint, locations are _never_ duplicated, so | |
11674 | should_be_inserted is equivalent to | |
11675 | unduplicated_should_be_inserted. */ | |
11676 | if (!should_be_inserted (bl) || bl->inserted) | |
11677 | continue; | |
11678 | ||
11679 | switch_to_program_space_and_thread (bl->pspace); | |
11680 | ||
11681 | target_download_tracepoint (bl); | |
11682 | ||
11683 | bl->inserted = 1; | |
11684 | t = (struct tracepoint *) bl->owner; | |
11685 | t->number_on_target = bl->owner->number; | |
11686 | } | |
11687 | ||
11688 | do_cleanups (old_chain); | |
11689 | } | |
11690 | ||
934709f0 PW |
11691 | /* Swap the insertion/duplication state between two locations. */ |
11692 | ||
11693 | static void | |
11694 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
11695 | { | |
11696 | const int left_inserted = left->inserted; | |
11697 | const int left_duplicate = left->duplicate; | |
b775012e | 11698 | const int left_needs_update = left->needs_update; |
934709f0 PW |
11699 | const struct bp_target_info left_target_info = left->target_info; |
11700 | ||
1e4d1764 YQ |
11701 | /* Locations of tracepoints can never be duplicated. */ |
11702 | if (is_tracepoint (left->owner)) | |
11703 | gdb_assert (!left->duplicate); | |
11704 | if (is_tracepoint (right->owner)) | |
11705 | gdb_assert (!right->duplicate); | |
11706 | ||
934709f0 PW |
11707 | left->inserted = right->inserted; |
11708 | left->duplicate = right->duplicate; | |
b775012e | 11709 | left->needs_update = right->needs_update; |
934709f0 PW |
11710 | left->target_info = right->target_info; |
11711 | right->inserted = left_inserted; | |
11712 | right->duplicate = left_duplicate; | |
b775012e | 11713 | right->needs_update = left_needs_update; |
934709f0 PW |
11714 | right->target_info = left_target_info; |
11715 | } | |
11716 | ||
b775012e LM |
11717 | /* Force the re-insertion of the locations at ADDRESS. This is called |
11718 | once a new/deleted/modified duplicate location is found and we are evaluating | |
11719 | conditions on the target's side. Such conditions need to be updated on | |
11720 | the target. */ | |
11721 | ||
11722 | static void | |
11723 | force_breakpoint_reinsertion (struct bp_location *bl) | |
11724 | { | |
11725 | struct bp_location **locp = NULL, **loc2p; | |
11726 | struct bp_location *loc; | |
11727 | CORE_ADDR address = 0; | |
11728 | int pspace_num; | |
11729 | ||
11730 | address = bl->address; | |
11731 | pspace_num = bl->pspace->num; | |
11732 | ||
11733 | /* This is only meaningful if the target is | |
11734 | evaluating conditions and if the user has | |
11735 | opted for condition evaluation on the target's | |
11736 | side. */ | |
11737 | if (gdb_evaluates_breakpoint_condition_p () | |
11738 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
11739 | return; | |
11740 | ||
11741 | /* Flag all breakpoint locations with this address and | |
11742 | the same program space as the location | |
11743 | as "its condition has changed". We need to | |
11744 | update the conditions on the target's side. */ | |
11745 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
11746 | { | |
11747 | loc = *loc2p; | |
11748 | ||
11749 | if (!is_breakpoint (loc->owner) | |
11750 | || pspace_num != loc->pspace->num) | |
11751 | continue; | |
11752 | ||
11753 | /* Flag the location appropriately. We use a different state to | |
11754 | let everyone know that we already updated the set of locations | |
11755 | with addr bl->address and program space bl->pspace. This is so | |
11756 | we don't have to keep calling these functions just to mark locations | |
11757 | that have already been marked. */ | |
11758 | loc->condition_changed = condition_updated; | |
11759 | ||
11760 | /* Free the agent expression bytecode as well. We will compute | |
11761 | it later on. */ | |
11762 | if (loc->cond_bytecode) | |
11763 | { | |
11764 | free_agent_expr (loc->cond_bytecode); | |
11765 | loc->cond_bytecode = NULL; | |
11766 | } | |
11767 | } | |
11768 | } | |
11769 | ||
4cd9bd08 | 11770 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
11771 | into the inferior, only remove already-inserted locations that no |
11772 | longer should be inserted. Functions that delete a breakpoint or | |
11773 | breakpoints should pass false, so that deleting a breakpoint | |
11774 | doesn't have the side effect of inserting the locations of other | |
11775 | breakpoints that are marked not-inserted, but should_be_inserted | |
11776 | returns true on them. | |
11777 | ||
11778 | This behaviour is useful is situations close to tear-down -- e.g., | |
11779 | after an exec, while the target still has execution, but breakpoint | |
11780 | shadows of the previous executable image should *NOT* be restored | |
11781 | to the new image; or before detaching, where the target still has | |
11782 | execution and wants to delete breakpoints from GDB's lists, and all | |
11783 | breakpoints had already been removed from the inferior. */ | |
11784 | ||
0d381245 | 11785 | static void |
b60e7edf | 11786 | update_global_location_list (int should_insert) |
0d381245 | 11787 | { |
74960c60 | 11788 | struct breakpoint *b; |
876fa593 | 11789 | struct bp_location **locp, *loc; |
f7545552 | 11790 | struct cleanup *cleanups; |
b775012e LM |
11791 | /* Last breakpoint location address that was marked for update. */ |
11792 | CORE_ADDR last_addr = 0; | |
11793 | /* Last breakpoint location program space that was marked for update. */ | |
11794 | int last_pspace_num = -1; | |
f7545552 | 11795 | |
2d134ed3 PA |
11796 | /* Used in the duplicates detection below. When iterating over all |
11797 | bp_locations, points to the first bp_location of a given address. | |
11798 | Breakpoints and watchpoints of different types are never | |
11799 | duplicates of each other. Keep one pointer for each type of | |
11800 | breakpoint/watchpoint, so we only need to loop over all locations | |
11801 | once. */ | |
11802 | struct bp_location *bp_loc_first; /* breakpoint */ | |
11803 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
11804 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
11805 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 11806 | |
4a64f543 MS |
11807 | /* Saved former bp_location array which we compare against the newly |
11808 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
11809 | struct bp_location **old_location, **old_locp; |
11810 | unsigned old_location_count; | |
11811 | ||
11812 | old_location = bp_location; | |
11813 | old_location_count = bp_location_count; | |
11814 | bp_location = NULL; | |
11815 | bp_location_count = 0; | |
11816 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 11817 | |
74960c60 | 11818 | ALL_BREAKPOINTS (b) |
876fa593 JK |
11819 | for (loc = b->loc; loc; loc = loc->next) |
11820 | bp_location_count++; | |
11821 | ||
11822 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
11823 | locp = bp_location; | |
11824 | ALL_BREAKPOINTS (b) | |
11825 | for (loc = b->loc; loc; loc = loc->next) | |
11826 | *locp++ = loc; | |
11827 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 11828 | bp_location_compare); |
876fa593 JK |
11829 | |
11830 | bp_location_target_extensions_update (); | |
74960c60 | 11831 | |
4a64f543 MS |
11832 | /* Identify bp_location instances that are no longer present in the |
11833 | new list, and therefore should be freed. Note that it's not | |
11834 | necessary that those locations should be removed from inferior -- | |
11835 | if there's another location at the same address (previously | |
11836 | marked as duplicate), we don't need to remove/insert the | |
11837 | location. | |
876fa593 | 11838 | |
4a64f543 MS |
11839 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
11840 | and former bp_location array state respectively. */ | |
876fa593 JK |
11841 | |
11842 | locp = bp_location; | |
11843 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
11844 | old_locp++) | |
74960c60 | 11845 | { |
876fa593 | 11846 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 11847 | struct bp_location **loc2p; |
876fa593 | 11848 | |
e5dd4106 | 11849 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 11850 | not, we have to free it. */ |
c7d46a38 | 11851 | int found_object = 0; |
20874c92 VP |
11852 | /* Tells if the location should remain inserted in the target. */ |
11853 | int keep_in_target = 0; | |
11854 | int removed = 0; | |
876fa593 | 11855 | |
4a64f543 MS |
11856 | /* Skip LOCP entries which will definitely never be needed. |
11857 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 11858 | while (locp < bp_location + bp_location_count |
c7d46a38 | 11859 | && (*locp)->address < old_loc->address) |
876fa593 | 11860 | locp++; |
c7d46a38 PA |
11861 | |
11862 | for (loc2p = locp; | |
11863 | (loc2p < bp_location + bp_location_count | |
11864 | && (*loc2p)->address == old_loc->address); | |
11865 | loc2p++) | |
11866 | { | |
b775012e LM |
11867 | /* Check if this is a new/duplicated location or a duplicated |
11868 | location that had its condition modified. If so, we want to send | |
11869 | its condition to the target if evaluation of conditions is taking | |
11870 | place there. */ | |
11871 | if ((*loc2p)->condition_changed == condition_modified | |
11872 | && (last_addr != old_loc->address | |
11873 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 11874 | { |
b775012e LM |
11875 | force_breakpoint_reinsertion (*loc2p); |
11876 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 11877 | } |
b775012e LM |
11878 | |
11879 | if (*loc2p == old_loc) | |
11880 | found_object = 1; | |
c7d46a38 | 11881 | } |
74960c60 | 11882 | |
b775012e LM |
11883 | /* We have already handled this address, update it so that we don't |
11884 | have to go through updates again. */ | |
11885 | last_addr = old_loc->address; | |
11886 | ||
11887 | /* Target-side condition evaluation: Handle deleted locations. */ | |
11888 | if (!found_object) | |
11889 | force_breakpoint_reinsertion (old_loc); | |
11890 | ||
4a64f543 MS |
11891 | /* If this location is no longer present, and inserted, look if |
11892 | there's maybe a new location at the same address. If so, | |
11893 | mark that one inserted, and don't remove this one. This is | |
11894 | needed so that we don't have a time window where a breakpoint | |
11895 | at certain location is not inserted. */ | |
74960c60 | 11896 | |
876fa593 | 11897 | if (old_loc->inserted) |
0d381245 | 11898 | { |
4a64f543 MS |
11899 | /* If the location is inserted now, we might have to remove |
11900 | it. */ | |
74960c60 | 11901 | |
876fa593 | 11902 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 11903 | { |
4a64f543 MS |
11904 | /* The location is still present in the location list, |
11905 | and still should be inserted. Don't do anything. */ | |
20874c92 | 11906 | keep_in_target = 1; |
74960c60 VP |
11907 | } |
11908 | else | |
11909 | { | |
b775012e LM |
11910 | /* This location still exists, but it won't be kept in the |
11911 | target since it may have been disabled. We proceed to | |
11912 | remove its target-side condition. */ | |
11913 | ||
4a64f543 MS |
11914 | /* The location is either no longer present, or got |
11915 | disabled. See if there's another location at the | |
11916 | same address, in which case we don't need to remove | |
11917 | this one from the target. */ | |
876fa593 | 11918 | |
2bdf28a0 | 11919 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
11920 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
11921 | { | |
876fa593 | 11922 | for (loc2p = locp; |
c7d46a38 PA |
11923 | (loc2p < bp_location + bp_location_count |
11924 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
11925 | loc2p++) |
11926 | { | |
11927 | struct bp_location *loc2 = *loc2p; | |
11928 | ||
2d134ed3 | 11929 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 11930 | { |
85d721b8 PA |
11931 | /* Read watchpoint locations are switched to |
11932 | access watchpoints, if the former are not | |
11933 | supported, but the latter are. */ | |
11934 | if (is_hardware_watchpoint (old_loc->owner)) | |
11935 | { | |
11936 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
11937 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
11938 | } | |
11939 | ||
934709f0 PW |
11940 | /* loc2 is a duplicated location. We need to check |
11941 | if it should be inserted in case it will be | |
11942 | unduplicated. */ | |
11943 | if (loc2 != old_loc | |
11944 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 11945 | { |
934709f0 | 11946 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
11947 | keep_in_target = 1; |
11948 | break; | |
11949 | } | |
876fa593 JK |
11950 | } |
11951 | } | |
11952 | } | |
74960c60 VP |
11953 | } |
11954 | ||
20874c92 VP |
11955 | if (!keep_in_target) |
11956 | { | |
876fa593 | 11957 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 11958 | { |
4a64f543 MS |
11959 | /* This is just about all we can do. We could keep |
11960 | this location on the global list, and try to | |
11961 | remove it next time, but there's no particular | |
11962 | reason why we will succeed next time. | |
20874c92 | 11963 | |
4a64f543 MS |
11964 | Note that at this point, old_loc->owner is still |
11965 | valid, as delete_breakpoint frees the breakpoint | |
11966 | only after calling us. */ | |
3e43a32a MS |
11967 | printf_filtered (_("warning: Error removing " |
11968 | "breakpoint %d\n"), | |
876fa593 | 11969 | old_loc->owner->number); |
20874c92 VP |
11970 | } |
11971 | removed = 1; | |
11972 | } | |
0d381245 | 11973 | } |
74960c60 VP |
11974 | |
11975 | if (!found_object) | |
1c5cfe86 | 11976 | { |
db82e815 PA |
11977 | if (removed && non_stop |
11978 | && breakpoint_address_is_meaningful (old_loc->owner) | |
11979 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 11980 | { |
db82e815 PA |
11981 | /* This location was removed from the target. In |
11982 | non-stop mode, a race condition is possible where | |
11983 | we've removed a breakpoint, but stop events for that | |
11984 | breakpoint are already queued and will arrive later. | |
11985 | We apply an heuristic to be able to distinguish such | |
11986 | SIGTRAPs from other random SIGTRAPs: we keep this | |
11987 | breakpoint location for a bit, and will retire it | |
11988 | after we see some number of events. The theory here | |
11989 | is that reporting of events should, "on the average", | |
11990 | be fair, so after a while we'll see events from all | |
11991 | threads that have anything of interest, and no longer | |
11992 | need to keep this breakpoint location around. We | |
11993 | don't hold locations forever so to reduce chances of | |
11994 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
11995 | SIGTRAP. | |
11996 | ||
11997 | The heuristic failing can be disastrous on | |
11998 | decr_pc_after_break targets. | |
11999 | ||
12000 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12001 | if we fail to recognize a late breakpoint SIGTRAP, | |
12002 | because events_till_retirement has reached 0 too | |
12003 | soon, we'll fail to do the PC adjustment, and report | |
12004 | a random SIGTRAP to the user. When the user resumes | |
12005 | the inferior, it will most likely immediately crash | |
2dec564e | 12006 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12007 | corrupted, because of being resumed e.g., in the |
12008 | middle of a multi-byte instruction, or skipped a | |
12009 | one-byte instruction. This was actually seen happen | |
12010 | on native x86-linux, and should be less rare on | |
12011 | targets that do not support new thread events, like | |
12012 | remote, due to the heuristic depending on | |
12013 | thread_count. | |
12014 | ||
12015 | Mistaking a random SIGTRAP for a breakpoint trap | |
12016 | causes similar symptoms (PC adjustment applied when | |
12017 | it shouldn't), but then again, playing with SIGTRAPs | |
12018 | behind the debugger's back is asking for trouble. | |
12019 | ||
12020 | Since hardware watchpoint traps are always | |
12021 | distinguishable from other traps, so we don't need to | |
12022 | apply keep hardware watchpoint moribund locations | |
12023 | around. We simply always ignore hardware watchpoint | |
12024 | traps we can no longer explain. */ | |
12025 | ||
876fa593 JK |
12026 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12027 | old_loc->owner = NULL; | |
20874c92 | 12028 | |
876fa593 | 12029 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12030 | } |
12031 | else | |
f431efe5 PA |
12032 | { |
12033 | old_loc->owner = NULL; | |
12034 | decref_bp_location (&old_loc); | |
12035 | } | |
20874c92 | 12036 | } |
74960c60 | 12037 | } |
1c5cfe86 | 12038 | |
348d480f PA |
12039 | /* Rescan breakpoints at the same address and section, marking the |
12040 | first one as "first" and any others as "duplicates". This is so | |
12041 | that the bpt instruction is only inserted once. If we have a | |
12042 | permanent breakpoint at the same place as BPT, make that one the | |
12043 | official one, and the rest as duplicates. Permanent breakpoints | |
12044 | are sorted first for the same address. | |
12045 | ||
12046 | Do the same for hardware watchpoints, but also considering the | |
12047 | watchpoint's type (regular/access/read) and length. */ | |
12048 | ||
12049 | bp_loc_first = NULL; | |
12050 | wp_loc_first = NULL; | |
12051 | awp_loc_first = NULL; | |
12052 | rwp_loc_first = NULL; | |
12053 | ALL_BP_LOCATIONS (loc, locp) | |
12054 | { | |
12055 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12056 | non-NULL. */ | |
348d480f | 12057 | struct bp_location **loc_first_p; |
d3fbdd86 | 12058 | b = loc->owner; |
348d480f | 12059 | |
f8eba3c6 | 12060 | if (!should_be_inserted (loc) |
348d480f | 12061 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12062 | /* Don't detect duplicate for tracepoint locations because they are |
12063 | never duplicated. See the comments in field `duplicate' of | |
12064 | `struct bp_location'. */ | |
348d480f | 12065 | || is_tracepoint (b)) |
b775012e LM |
12066 | { |
12067 | /* Clear the condition modification flag. */ | |
12068 | loc->condition_changed = condition_unchanged; | |
12069 | continue; | |
12070 | } | |
348d480f PA |
12071 | |
12072 | /* Permanent breakpoint should always be inserted. */ | |
12073 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12074 | internal_error (__FILE__, __LINE__, | |
12075 | _("allegedly permanent breakpoint is not " | |
12076 | "actually inserted")); | |
12077 | ||
12078 | if (b->type == bp_hardware_watchpoint) | |
12079 | loc_first_p = &wp_loc_first; | |
12080 | else if (b->type == bp_read_watchpoint) | |
12081 | loc_first_p = &rwp_loc_first; | |
12082 | else if (b->type == bp_access_watchpoint) | |
12083 | loc_first_p = &awp_loc_first; | |
12084 | else | |
12085 | loc_first_p = &bp_loc_first; | |
12086 | ||
12087 | if (*loc_first_p == NULL | |
12088 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12089 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12090 | { | |
12091 | *loc_first_p = loc; | |
12092 | loc->duplicate = 0; | |
b775012e LM |
12093 | |
12094 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12095 | { | |
12096 | loc->needs_update = 1; | |
12097 | /* Clear the condition modification flag. */ | |
12098 | loc->condition_changed = condition_unchanged; | |
12099 | } | |
348d480f PA |
12100 | continue; |
12101 | } | |
12102 | ||
934709f0 PW |
12103 | |
12104 | /* This and the above ensure the invariant that the first location | |
12105 | is not duplicated, and is the inserted one. | |
12106 | All following are marked as duplicated, and are not inserted. */ | |
12107 | if (loc->inserted) | |
12108 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12109 | loc->duplicate = 1; |
12110 | ||
b775012e LM |
12111 | /* Clear the condition modification flag. */ |
12112 | loc->condition_changed = condition_unchanged; | |
12113 | ||
348d480f PA |
12114 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12115 | && b->enable_state != bp_permanent) | |
12116 | internal_error (__FILE__, __LINE__, | |
12117 | _("another breakpoint was inserted on top of " | |
12118 | "a permanent breakpoint")); | |
12119 | } | |
12120 | ||
b775012e | 12121 | if (breakpoints_always_inserted_mode () |
348d480f PA |
12122 | && (have_live_inferiors () |
12123 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) | |
b775012e LM |
12124 | { |
12125 | if (should_insert) | |
12126 | insert_breakpoint_locations (); | |
12127 | else | |
12128 | { | |
12129 | /* Though should_insert is false, we may need to update conditions | |
12130 | on the target's side if it is evaluating such conditions. We | |
12131 | only update conditions for locations that are marked | |
12132 | "needs_update". */ | |
12133 | update_inserted_breakpoint_locations (); | |
12134 | } | |
12135 | } | |
348d480f | 12136 | |
1e4d1764 YQ |
12137 | if (should_insert) |
12138 | download_tracepoint_locations (); | |
12139 | ||
348d480f PA |
12140 | do_cleanups (cleanups); |
12141 | } | |
12142 | ||
12143 | void | |
12144 | breakpoint_retire_moribund (void) | |
12145 | { | |
12146 | struct bp_location *loc; | |
12147 | int ix; | |
12148 | ||
12149 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12150 | if (--(loc->events_till_retirement) == 0) | |
12151 | { | |
12152 | decref_bp_location (&loc); | |
12153 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12154 | --ix; | |
12155 | } | |
12156 | } | |
12157 | ||
12158 | static void | |
12159 | update_global_location_list_nothrow (int inserting) | |
12160 | { | |
bfd189b1 | 12161 | volatile struct gdb_exception e; |
348d480f PA |
12162 | |
12163 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12164 | update_global_location_list (inserting); | |
12165 | } | |
12166 | ||
12167 | /* Clear BKP from a BPS. */ | |
12168 | ||
12169 | static void | |
12170 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12171 | { | |
12172 | bpstat bs; | |
12173 | ||
12174 | for (bs = bps; bs; bs = bs->next) | |
12175 | if (bs->breakpoint_at == bpt) | |
12176 | { | |
12177 | bs->breakpoint_at = NULL; | |
12178 | bs->old_val = NULL; | |
12179 | /* bs->commands will be freed later. */ | |
12180 | } | |
12181 | } | |
12182 | ||
12183 | /* Callback for iterate_over_threads. */ | |
12184 | static int | |
12185 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12186 | { | |
12187 | struct breakpoint *bpt = data; | |
12188 | ||
12189 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12190 | return 0; | |
12191 | } | |
12192 | ||
12193 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12194 | callbacks. */ | |
12195 | ||
12196 | static void | |
12197 | say_where (struct breakpoint *b) | |
12198 | { | |
79a45e25 | 12199 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12200 | struct value_print_options opts; |
12201 | ||
12202 | get_user_print_options (&opts); | |
12203 | ||
12204 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12205 | single string. */ | |
12206 | if (b->loc == NULL) | |
12207 | { | |
12208 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12209 | } | |
12210 | else | |
12211 | { | |
f8eba3c6 | 12212 | if (opts.addressprint || b->loc->source_file == NULL) |
348d480f PA |
12213 | { |
12214 | printf_filtered (" at "); | |
12215 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12216 | gdb_stdout); | |
12217 | } | |
f8eba3c6 TT |
12218 | if (b->loc->source_file) |
12219 | { | |
12220 | /* If there is a single location, we can print the location | |
12221 | more nicely. */ | |
12222 | if (b->loc->next == NULL) | |
12223 | printf_filtered (": file %s, line %d.", | |
12224 | b->loc->source_file, b->loc->line_number); | |
12225 | else | |
12226 | /* This is not ideal, but each location may have a | |
12227 | different file name, and this at least reflects the | |
12228 | real situation somewhat. */ | |
12229 | printf_filtered (": %s.", b->addr_string); | |
12230 | } | |
348d480f PA |
12231 | |
12232 | if (b->loc->next) | |
12233 | { | |
12234 | struct bp_location *loc = b->loc; | |
12235 | int n = 0; | |
12236 | for (; loc; loc = loc->next) | |
12237 | ++n; | |
12238 | printf_filtered (" (%d locations)", n); | |
12239 | } | |
12240 | } | |
12241 | } | |
12242 | ||
348d480f PA |
12243 | /* Default bp_location_ops methods. */ |
12244 | ||
12245 | static void | |
12246 | bp_location_dtor (struct bp_location *self) | |
12247 | { | |
12248 | xfree (self->cond); | |
b775012e LM |
12249 | if (self->cond_bytecode) |
12250 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12251 | xfree (self->function_name); |
f8eba3c6 | 12252 | xfree (self->source_file); |
348d480f PA |
12253 | } |
12254 | ||
12255 | static const struct bp_location_ops bp_location_ops = | |
12256 | { | |
12257 | bp_location_dtor | |
12258 | }; | |
12259 | ||
2060206e PA |
12260 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12261 | inherit from. */ | |
348d480f | 12262 | |
2060206e PA |
12263 | static void |
12264 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12265 | { |
12266 | decref_counted_command_line (&self->commands); | |
12267 | xfree (self->cond_string); | |
348d480f | 12268 | xfree (self->addr_string); |
f8eba3c6 | 12269 | xfree (self->filter); |
348d480f | 12270 | xfree (self->addr_string_range_end); |
348d480f PA |
12271 | } |
12272 | ||
2060206e PA |
12273 | static struct bp_location * |
12274 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12275 | { |
12276 | struct bp_location *loc; | |
12277 | ||
12278 | loc = XNEW (struct bp_location); | |
12279 | init_bp_location (loc, &bp_location_ops, self); | |
12280 | return loc; | |
12281 | } | |
12282 | ||
2060206e PA |
12283 | static void |
12284 | base_breakpoint_re_set (struct breakpoint *b) | |
12285 | { | |
12286 | /* Nothing to re-set. */ | |
12287 | } | |
12288 | ||
12289 | #define internal_error_pure_virtual_called() \ | |
12290 | gdb_assert_not_reached ("pure virtual function called") | |
12291 | ||
12292 | static int | |
12293 | base_breakpoint_insert_location (struct bp_location *bl) | |
12294 | { | |
12295 | internal_error_pure_virtual_called (); | |
12296 | } | |
12297 | ||
12298 | static int | |
12299 | base_breakpoint_remove_location (struct bp_location *bl) | |
12300 | { | |
12301 | internal_error_pure_virtual_called (); | |
12302 | } | |
12303 | ||
12304 | static int | |
12305 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12306 | struct address_space *aspace, | |
09ac7c10 TT |
12307 | CORE_ADDR bp_addr, |
12308 | const struct target_waitstatus *ws) | |
2060206e PA |
12309 | { |
12310 | internal_error_pure_virtual_called (); | |
12311 | } | |
12312 | ||
12313 | static void | |
12314 | base_breakpoint_check_status (bpstat bs) | |
12315 | { | |
12316 | /* Always stop. */ | |
12317 | } | |
12318 | ||
12319 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12320 | errors. */ | |
12321 | ||
12322 | static int | |
12323 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12324 | { | |
12325 | internal_error_pure_virtual_called (); | |
12326 | } | |
12327 | ||
12328 | /* A "resources_needed" breakpoint_ops method that just internal | |
12329 | errors. */ | |
12330 | ||
12331 | static int | |
12332 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12333 | { | |
12334 | internal_error_pure_virtual_called (); | |
12335 | } | |
12336 | ||
12337 | static enum print_stop_action | |
12338 | base_breakpoint_print_it (bpstat bs) | |
12339 | { | |
12340 | internal_error_pure_virtual_called (); | |
12341 | } | |
12342 | ||
12343 | static void | |
12344 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12345 | struct ui_out *uiout) | |
12346 | { | |
12347 | /* nothing */ | |
12348 | } | |
12349 | ||
12350 | static void | |
12351 | base_breakpoint_print_mention (struct breakpoint *b) | |
12352 | { | |
12353 | internal_error_pure_virtual_called (); | |
12354 | } | |
12355 | ||
12356 | static void | |
12357 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12358 | { | |
12359 | internal_error_pure_virtual_called (); | |
12360 | } | |
12361 | ||
983af33b SDJ |
12362 | static void |
12363 | base_breakpoint_create_sals_from_address (char **arg, | |
12364 | struct linespec_result *canonical, | |
12365 | enum bptype type_wanted, | |
12366 | char *addr_start, | |
12367 | char **copy_arg) | |
12368 | { | |
12369 | internal_error_pure_virtual_called (); | |
12370 | } | |
12371 | ||
12372 | static void | |
12373 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12374 | struct linespec_result *c, | |
12375 | struct linespec_sals *lsal, | |
12376 | char *cond_string, | |
e7e0cddf | 12377 | char *extra_string, |
983af33b SDJ |
12378 | enum bptype type_wanted, |
12379 | enum bpdisp disposition, | |
12380 | int thread, | |
12381 | int task, int ignore_count, | |
12382 | const struct breakpoint_ops *o, | |
12383 | int from_tty, int enabled, | |
44f238bb | 12384 | int internal, unsigned flags) |
983af33b SDJ |
12385 | { |
12386 | internal_error_pure_virtual_called (); | |
12387 | } | |
12388 | ||
12389 | static void | |
12390 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12391 | struct symtabs_and_lines *sals) | |
12392 | { | |
12393 | internal_error_pure_virtual_called (); | |
12394 | } | |
12395 | ||
2060206e PA |
12396 | static struct breakpoint_ops base_breakpoint_ops = |
12397 | { | |
12398 | base_breakpoint_dtor, | |
12399 | base_breakpoint_allocate_location, | |
12400 | base_breakpoint_re_set, | |
12401 | base_breakpoint_insert_location, | |
12402 | base_breakpoint_remove_location, | |
12403 | base_breakpoint_breakpoint_hit, | |
12404 | base_breakpoint_check_status, | |
12405 | base_breakpoint_resources_needed, | |
12406 | base_breakpoint_works_in_software_mode, | |
12407 | base_breakpoint_print_it, | |
12408 | NULL, | |
12409 | base_breakpoint_print_one_detail, | |
12410 | base_breakpoint_print_mention, | |
983af33b SDJ |
12411 | base_breakpoint_print_recreate, |
12412 | base_breakpoint_create_sals_from_address, | |
12413 | base_breakpoint_create_breakpoints_sal, | |
12414 | base_breakpoint_decode_linespec, | |
2060206e PA |
12415 | }; |
12416 | ||
12417 | /* Default breakpoint_ops methods. */ | |
12418 | ||
12419 | static void | |
348d480f PA |
12420 | bkpt_re_set (struct breakpoint *b) |
12421 | { | |
06edf0c0 PA |
12422 | /* FIXME: is this still reachable? */ |
12423 | if (b->addr_string == NULL) | |
12424 | { | |
12425 | /* Anything without a string can't be re-set. */ | |
348d480f | 12426 | delete_breakpoint (b); |
06edf0c0 | 12427 | return; |
348d480f | 12428 | } |
06edf0c0 PA |
12429 | |
12430 | breakpoint_re_set_default (b); | |
348d480f PA |
12431 | } |
12432 | ||
2060206e | 12433 | static int |
348d480f PA |
12434 | bkpt_insert_location (struct bp_location *bl) |
12435 | { | |
12436 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12437 | return target_insert_hw_breakpoint (bl->gdbarch, | |
12438 | &bl->target_info); | |
12439 | else | |
12440 | return target_insert_breakpoint (bl->gdbarch, | |
12441 | &bl->target_info); | |
12442 | } | |
12443 | ||
2060206e | 12444 | static int |
348d480f PA |
12445 | bkpt_remove_location (struct bp_location *bl) |
12446 | { | |
12447 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12448 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12449 | else | |
12450 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
12451 | } | |
12452 | ||
2060206e | 12453 | static int |
348d480f | 12454 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12455 | struct address_space *aspace, CORE_ADDR bp_addr, |
12456 | const struct target_waitstatus *ws) | |
348d480f PA |
12457 | { |
12458 | struct breakpoint *b = bl->owner; | |
12459 | ||
09ac7c10 TT |
12460 | if (ws->kind != TARGET_WAITKIND_STOPPED |
12461 | || ws->value.sig != TARGET_SIGNAL_TRAP) | |
12462 | return 0; | |
12463 | ||
348d480f PA |
12464 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12465 | aspace, bp_addr)) | |
12466 | return 0; | |
12467 | ||
12468 | if (overlay_debugging /* unmapped overlay section */ | |
12469 | && section_is_overlay (bl->section) | |
12470 | && !section_is_mapped (bl->section)) | |
12471 | return 0; | |
12472 | ||
12473 | return 1; | |
12474 | } | |
12475 | ||
2060206e | 12476 | static int |
348d480f PA |
12477 | bkpt_resources_needed (const struct bp_location *bl) |
12478 | { | |
12479 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12480 | ||
12481 | return 1; | |
12482 | } | |
12483 | ||
2060206e | 12484 | static enum print_stop_action |
348d480f PA |
12485 | bkpt_print_it (bpstat bs) |
12486 | { | |
348d480f PA |
12487 | struct breakpoint *b; |
12488 | const struct bp_location *bl; | |
001c8c33 | 12489 | int bp_temp; |
79a45e25 | 12490 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12491 | |
12492 | gdb_assert (bs->bp_location_at != NULL); | |
12493 | ||
12494 | bl = bs->bp_location_at; | |
12495 | b = bs->breakpoint_at; | |
12496 | ||
001c8c33 PA |
12497 | bp_temp = b->disposition == disp_del; |
12498 | if (bl->address != bl->requested_address) | |
12499 | breakpoint_adjustment_warning (bl->requested_address, | |
12500 | bl->address, | |
12501 | b->number, 1); | |
12502 | annotate_breakpoint (b->number); | |
12503 | if (bp_temp) | |
12504 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12505 | else | |
12506 | ui_out_text (uiout, "\nBreakpoint "); | |
12507 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12508 | { |
001c8c33 PA |
12509 | ui_out_field_string (uiout, "reason", |
12510 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12511 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12512 | } |
001c8c33 PA |
12513 | ui_out_field_int (uiout, "bkptno", b->number); |
12514 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12515 | |
001c8c33 | 12516 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12517 | } |
12518 | ||
2060206e | 12519 | static void |
06edf0c0 PA |
12520 | bkpt_print_mention (struct breakpoint *b) |
12521 | { | |
79a45e25 | 12522 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12523 | return; |
12524 | ||
12525 | switch (b->type) | |
12526 | { | |
12527 | case bp_breakpoint: | |
12528 | case bp_gnu_ifunc_resolver: | |
12529 | if (b->disposition == disp_del) | |
12530 | printf_filtered (_("Temporary breakpoint")); | |
12531 | else | |
12532 | printf_filtered (_("Breakpoint")); | |
12533 | printf_filtered (_(" %d"), b->number); | |
12534 | if (b->type == bp_gnu_ifunc_resolver) | |
12535 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12536 | break; | |
12537 | case bp_hardware_breakpoint: | |
12538 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12539 | break; | |
e7e0cddf SS |
12540 | case bp_dprintf: |
12541 | printf_filtered (_("Dprintf %d"), b->number); | |
12542 | break; | |
06edf0c0 PA |
12543 | } |
12544 | ||
12545 | say_where (b); | |
12546 | } | |
12547 | ||
2060206e | 12548 | static void |
06edf0c0 PA |
12549 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12550 | { | |
12551 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12552 | fprintf_unfiltered (fp, "tbreak"); | |
12553 | else if (tp->type == bp_breakpoint) | |
12554 | fprintf_unfiltered (fp, "break"); | |
12555 | else if (tp->type == bp_hardware_breakpoint | |
12556 | && tp->disposition == disp_del) | |
12557 | fprintf_unfiltered (fp, "thbreak"); | |
12558 | else if (tp->type == bp_hardware_breakpoint) | |
12559 | fprintf_unfiltered (fp, "hbreak"); | |
12560 | else | |
12561 | internal_error (__FILE__, __LINE__, | |
12562 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12563 | ||
2060206e | 12564 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 12565 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12566 | } |
12567 | ||
983af33b SDJ |
12568 | static void |
12569 | bkpt_create_sals_from_address (char **arg, | |
12570 | struct linespec_result *canonical, | |
12571 | enum bptype type_wanted, | |
12572 | char *addr_start, char **copy_arg) | |
12573 | { | |
12574 | create_sals_from_address_default (arg, canonical, type_wanted, | |
12575 | addr_start, copy_arg); | |
12576 | } | |
12577 | ||
12578 | static void | |
12579 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12580 | struct linespec_result *canonical, | |
12581 | struct linespec_sals *lsal, | |
12582 | char *cond_string, | |
e7e0cddf | 12583 | char *extra_string, |
983af33b SDJ |
12584 | enum bptype type_wanted, |
12585 | enum bpdisp disposition, | |
12586 | int thread, | |
12587 | int task, int ignore_count, | |
12588 | const struct breakpoint_ops *ops, | |
12589 | int from_tty, int enabled, | |
44f238bb | 12590 | int internal, unsigned flags) |
983af33b SDJ |
12591 | { |
12592 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
12593 | cond_string, extra_string, |
12594 | type_wanted, | |
983af33b SDJ |
12595 | disposition, thread, task, |
12596 | ignore_count, ops, from_tty, | |
44f238bb | 12597 | enabled, internal, flags); |
983af33b SDJ |
12598 | } |
12599 | ||
12600 | static void | |
12601 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
12602 | struct symtabs_and_lines *sals) | |
12603 | { | |
12604 | decode_linespec_default (b, s, sals); | |
12605 | } | |
12606 | ||
06edf0c0 PA |
12607 | /* Virtual table for internal breakpoints. */ |
12608 | ||
12609 | static void | |
12610 | internal_bkpt_re_set (struct breakpoint *b) | |
12611 | { | |
12612 | switch (b->type) | |
12613 | { | |
12614 | /* Delete overlay event and longjmp master breakpoints; they | |
12615 | will be reset later by breakpoint_re_set. */ | |
12616 | case bp_overlay_event: | |
12617 | case bp_longjmp_master: | |
12618 | case bp_std_terminate_master: | |
12619 | case bp_exception_master: | |
12620 | delete_breakpoint (b); | |
12621 | break; | |
12622 | ||
12623 | /* This breakpoint is special, it's set up when the inferior | |
12624 | starts and we really don't want to touch it. */ | |
12625 | case bp_shlib_event: | |
12626 | ||
12627 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12628 | it is set up, we do not want to touch it. */ | |
12629 | case bp_thread_event: | |
12630 | break; | |
12631 | } | |
12632 | } | |
12633 | ||
12634 | static void | |
12635 | internal_bkpt_check_status (bpstat bs) | |
12636 | { | |
a9b3a50f PA |
12637 | if (bs->breakpoint_at->type == bp_shlib_event) |
12638 | { | |
12639 | /* If requested, stop when the dynamic linker notifies GDB of | |
12640 | events. This allows the user to get control and place | |
12641 | breakpoints in initializer routines for dynamically loaded | |
12642 | objects (among other things). */ | |
12643 | bs->stop = stop_on_solib_events; | |
12644 | bs->print = stop_on_solib_events; | |
12645 | } | |
12646 | else | |
12647 | bs->stop = 0; | |
06edf0c0 PA |
12648 | } |
12649 | ||
12650 | static enum print_stop_action | |
12651 | internal_bkpt_print_it (bpstat bs) | |
12652 | { | |
36dfb11c | 12653 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 12654 | struct breakpoint *b; |
06edf0c0 | 12655 | |
06edf0c0 PA |
12656 | b = bs->breakpoint_at; |
12657 | ||
06edf0c0 PA |
12658 | switch (b->type) |
12659 | { | |
348d480f PA |
12660 | case bp_shlib_event: |
12661 | /* Did we stop because the user set the stop_on_solib_events | |
12662 | variable? (If so, we report this as a generic, "Stopped due | |
12663 | to shlib event" message.) */ | |
edcc5120 | 12664 | print_solib_event (0); |
348d480f PA |
12665 | break; |
12666 | ||
12667 | case bp_thread_event: | |
12668 | /* Not sure how we will get here. | |
12669 | GDB should not stop for these breakpoints. */ | |
12670 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12671 | break; |
12672 | ||
12673 | case bp_overlay_event: | |
12674 | /* By analogy with the thread event, GDB should not stop for these. */ | |
12675 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12676 | break; |
12677 | ||
12678 | case bp_longjmp_master: | |
12679 | /* These should never be enabled. */ | |
12680 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
12681 | break; |
12682 | ||
12683 | case bp_std_terminate_master: | |
12684 | /* These should never be enabled. */ | |
12685 | printf_filtered (_("std::terminate Master Breakpoint: " | |
12686 | "gdb should not stop!\n")); | |
348d480f PA |
12687 | break; |
12688 | ||
12689 | case bp_exception_master: | |
12690 | /* These should never be enabled. */ | |
12691 | printf_filtered (_("Exception Master Breakpoint: " | |
12692 | "gdb should not stop!\n")); | |
06edf0c0 PA |
12693 | break; |
12694 | } | |
12695 | ||
001c8c33 | 12696 | return PRINT_NOTHING; |
06edf0c0 PA |
12697 | } |
12698 | ||
12699 | static void | |
12700 | internal_bkpt_print_mention (struct breakpoint *b) | |
12701 | { | |
12702 | /* Nothing to mention. These breakpoints are internal. */ | |
12703 | } | |
12704 | ||
06edf0c0 PA |
12705 | /* Virtual table for momentary breakpoints */ |
12706 | ||
12707 | static void | |
12708 | momentary_bkpt_re_set (struct breakpoint *b) | |
12709 | { | |
12710 | /* Keep temporary breakpoints, which can be encountered when we step | |
12711 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
12712 | Otherwise these should have been blown away via the cleanup chain | |
12713 | or by breakpoint_init_inferior when we rerun the executable. */ | |
12714 | } | |
12715 | ||
12716 | static void | |
12717 | momentary_bkpt_check_status (bpstat bs) | |
12718 | { | |
12719 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
12720 | } | |
12721 | ||
12722 | static enum print_stop_action | |
12723 | momentary_bkpt_print_it (bpstat bs) | |
12724 | { | |
79a45e25 PA |
12725 | struct ui_out *uiout = current_uiout; |
12726 | ||
001c8c33 | 12727 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 12728 | { |
001c8c33 | 12729 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 12730 | |
001c8c33 PA |
12731 | switch (b->type) |
12732 | { | |
12733 | case bp_finish: | |
12734 | ui_out_field_string | |
12735 | (uiout, "reason", | |
12736 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
12737 | break; | |
348d480f | 12738 | |
001c8c33 PA |
12739 | case bp_until: |
12740 | ui_out_field_string | |
12741 | (uiout, "reason", | |
12742 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
12743 | break; | |
12744 | } | |
348d480f PA |
12745 | } |
12746 | ||
001c8c33 | 12747 | return PRINT_UNKNOWN; |
348d480f PA |
12748 | } |
12749 | ||
06edf0c0 PA |
12750 | static void |
12751 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 12752 | { |
06edf0c0 | 12753 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
12754 | } |
12755 | ||
55aa24fb SDJ |
12756 | /* Specific methods for probe breakpoints. */ |
12757 | ||
12758 | static int | |
12759 | bkpt_probe_insert_location (struct bp_location *bl) | |
12760 | { | |
12761 | int v = bkpt_insert_location (bl); | |
12762 | ||
12763 | if (v == 0) | |
12764 | { | |
12765 | /* The insertion was successful, now let's set the probe's semaphore | |
12766 | if needed. */ | |
12767 | bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch); | |
12768 | } | |
12769 | ||
12770 | return v; | |
12771 | } | |
12772 | ||
12773 | static int | |
12774 | bkpt_probe_remove_location (struct bp_location *bl) | |
12775 | { | |
12776 | /* Let's clear the semaphore before removing the location. */ | |
12777 | bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch); | |
12778 | ||
12779 | return bkpt_remove_location (bl); | |
12780 | } | |
12781 | ||
12782 | static void | |
12783 | bkpt_probe_create_sals_from_address (char **arg, | |
12784 | struct linespec_result *canonical, | |
12785 | enum bptype type_wanted, | |
12786 | char *addr_start, char **copy_arg) | |
12787 | { | |
12788 | struct linespec_sals lsal; | |
12789 | ||
12790 | lsal.sals = parse_probes (arg, canonical); | |
12791 | ||
12792 | *copy_arg = xstrdup (canonical->addr_string); | |
12793 | lsal.canonical = xstrdup (*copy_arg); | |
12794 | ||
12795 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
12796 | } | |
12797 | ||
12798 | static void | |
12799 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
12800 | struct symtabs_and_lines *sals) | |
12801 | { | |
12802 | *sals = parse_probes (s, NULL); | |
12803 | if (!sals->sals) | |
12804 | error (_("probe not found")); | |
12805 | } | |
12806 | ||
348d480f | 12807 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 12808 | |
348d480f PA |
12809 | static void |
12810 | tracepoint_re_set (struct breakpoint *b) | |
12811 | { | |
12812 | breakpoint_re_set_default (b); | |
12813 | } | |
876fa593 | 12814 | |
348d480f PA |
12815 | static int |
12816 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
12817 | struct address_space *aspace, CORE_ADDR bp_addr, |
12818 | const struct target_waitstatus *ws) | |
348d480f PA |
12819 | { |
12820 | /* By definition, the inferior does not report stops at | |
12821 | tracepoints. */ | |
12822 | return 0; | |
74960c60 VP |
12823 | } |
12824 | ||
12825 | static void | |
348d480f PA |
12826 | tracepoint_print_one_detail (const struct breakpoint *self, |
12827 | struct ui_out *uiout) | |
74960c60 | 12828 | { |
d9b3f62e PA |
12829 | struct tracepoint *tp = (struct tracepoint *) self; |
12830 | if (tp->static_trace_marker_id) | |
348d480f PA |
12831 | { |
12832 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 12833 | |
348d480f PA |
12834 | ui_out_text (uiout, "\tmarker id is "); |
12835 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 12836 | tp->static_trace_marker_id); |
348d480f PA |
12837 | ui_out_text (uiout, "\n"); |
12838 | } | |
0d381245 VP |
12839 | } |
12840 | ||
a474d7c2 | 12841 | static void |
348d480f | 12842 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 12843 | { |
79a45e25 | 12844 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 12845 | return; |
cc59ec59 | 12846 | |
348d480f PA |
12847 | switch (b->type) |
12848 | { | |
12849 | case bp_tracepoint: | |
12850 | printf_filtered (_("Tracepoint")); | |
12851 | printf_filtered (_(" %d"), b->number); | |
12852 | break; | |
12853 | case bp_fast_tracepoint: | |
12854 | printf_filtered (_("Fast tracepoint")); | |
12855 | printf_filtered (_(" %d"), b->number); | |
12856 | break; | |
12857 | case bp_static_tracepoint: | |
12858 | printf_filtered (_("Static tracepoint")); | |
12859 | printf_filtered (_(" %d"), b->number); | |
12860 | break; | |
12861 | default: | |
12862 | internal_error (__FILE__, __LINE__, | |
12863 | _("unhandled tracepoint type %d"), (int) b->type); | |
12864 | } | |
12865 | ||
12866 | say_where (b); | |
a474d7c2 PA |
12867 | } |
12868 | ||
348d480f | 12869 | static void |
d9b3f62e | 12870 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 12871 | { |
d9b3f62e PA |
12872 | struct tracepoint *tp = (struct tracepoint *) self; |
12873 | ||
12874 | if (self->type == bp_fast_tracepoint) | |
348d480f | 12875 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 12876 | if (self->type == bp_static_tracepoint) |
348d480f | 12877 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 12878 | else if (self->type == bp_tracepoint) |
348d480f PA |
12879 | fprintf_unfiltered (fp, "trace"); |
12880 | else | |
12881 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 12882 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 12883 | |
d9b3f62e PA |
12884 | fprintf_unfiltered (fp, " %s", self->addr_string); |
12885 | print_recreate_thread (self, fp); | |
12886 | ||
12887 | if (tp->pass_count) | |
12888 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
12889 | } |
12890 | ||
983af33b SDJ |
12891 | static void |
12892 | tracepoint_create_sals_from_address (char **arg, | |
12893 | struct linespec_result *canonical, | |
12894 | enum bptype type_wanted, | |
12895 | char *addr_start, char **copy_arg) | |
12896 | { | |
12897 | create_sals_from_address_default (arg, canonical, type_wanted, | |
12898 | addr_start, copy_arg); | |
12899 | } | |
12900 | ||
12901 | static void | |
12902 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12903 | struct linespec_result *canonical, | |
12904 | struct linespec_sals *lsal, | |
12905 | char *cond_string, | |
e7e0cddf | 12906 | char *extra_string, |
983af33b SDJ |
12907 | enum bptype type_wanted, |
12908 | enum bpdisp disposition, | |
12909 | int thread, | |
12910 | int task, int ignore_count, | |
12911 | const struct breakpoint_ops *ops, | |
12912 | int from_tty, int enabled, | |
44f238bb | 12913 | int internal, unsigned flags) |
983af33b SDJ |
12914 | { |
12915 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
12916 | cond_string, extra_string, |
12917 | type_wanted, | |
983af33b SDJ |
12918 | disposition, thread, task, |
12919 | ignore_count, ops, from_tty, | |
44f238bb | 12920 | enabled, internal, flags); |
983af33b SDJ |
12921 | } |
12922 | ||
12923 | static void | |
12924 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
12925 | struct symtabs_and_lines *sals) | |
12926 | { | |
12927 | decode_linespec_default (b, s, sals); | |
12928 | } | |
12929 | ||
2060206e | 12930 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 12931 | |
55aa24fb SDJ |
12932 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
12933 | static probe. */ | |
12934 | ||
12935 | static void | |
12936 | tracepoint_probe_create_sals_from_address (char **arg, | |
12937 | struct linespec_result *canonical, | |
12938 | enum bptype type_wanted, | |
12939 | char *addr_start, char **copy_arg) | |
12940 | { | |
12941 | /* We use the same method for breakpoint on probes. */ | |
12942 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
12943 | addr_start, copy_arg); | |
12944 | } | |
12945 | ||
12946 | static void | |
12947 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
12948 | struct symtabs_and_lines *sals) | |
12949 | { | |
12950 | /* We use the same method for breakpoint on probes. */ | |
12951 | bkpt_probe_decode_linespec (b, s, sals); | |
12952 | } | |
12953 | ||
12954 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
12955 | ||
983af33b SDJ |
12956 | /* The breakpoint_ops structure to be used on static tracepoints with |
12957 | markers (`-m'). */ | |
12958 | ||
12959 | static void | |
12960 | strace_marker_create_sals_from_address (char **arg, | |
12961 | struct linespec_result *canonical, | |
12962 | enum bptype type_wanted, | |
12963 | char *addr_start, char **copy_arg) | |
12964 | { | |
12965 | struct linespec_sals lsal; | |
12966 | ||
12967 | lsal.sals = decode_static_tracepoint_spec (arg); | |
12968 | ||
12969 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
12970 | ||
12971 | canonical->addr_string = xstrdup (*copy_arg); | |
12972 | lsal.canonical = xstrdup (*copy_arg); | |
12973 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
12974 | } | |
12975 | ||
12976 | static void | |
12977 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12978 | struct linespec_result *canonical, | |
12979 | struct linespec_sals *lsal, | |
12980 | char *cond_string, | |
e7e0cddf | 12981 | char *extra_string, |
983af33b SDJ |
12982 | enum bptype type_wanted, |
12983 | enum bpdisp disposition, | |
12984 | int thread, | |
12985 | int task, int ignore_count, | |
12986 | const struct breakpoint_ops *ops, | |
12987 | int from_tty, int enabled, | |
44f238bb | 12988 | int internal, unsigned flags) |
983af33b SDJ |
12989 | { |
12990 | int i; | |
12991 | ||
12992 | /* If the user is creating a static tracepoint by marker id | |
12993 | (strace -m MARKER_ID), then store the sals index, so that | |
12994 | breakpoint_re_set can try to match up which of the newly | |
12995 | found markers corresponds to this one, and, don't try to | |
12996 | expand multiple locations for each sal, given than SALS | |
12997 | already should contain all sals for MARKER_ID. */ | |
12998 | ||
12999 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13000 | { | |
13001 | struct symtabs_and_lines expanded; | |
13002 | struct tracepoint *tp; | |
13003 | struct cleanup *old_chain; | |
13004 | char *addr_string; | |
13005 | ||
13006 | expanded.nelts = 1; | |
13007 | expanded.sals = &lsal->sals.sals[i]; | |
13008 | ||
13009 | addr_string = xstrdup (canonical->addr_string); | |
13010 | old_chain = make_cleanup (xfree, addr_string); | |
13011 | ||
13012 | tp = XCNEW (struct tracepoint); | |
13013 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
13014 | addr_string, NULL, | |
e7e0cddf SS |
13015 | cond_string, extra_string, |
13016 | type_wanted, disposition, | |
983af33b | 13017 | thread, task, ignore_count, ops, |
44f238bb | 13018 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13019 | canonical->special_display); |
13020 | /* Given that its possible to have multiple markers with | |
13021 | the same string id, if the user is creating a static | |
13022 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13023 | store the sals index, so that breakpoint_re_set can | |
13024 | try to match up which of the newly found markers | |
13025 | corresponds to this one */ | |
13026 | tp->static_trace_marker_id_idx = i; | |
13027 | ||
13028 | install_breakpoint (internal, &tp->base, 0); | |
13029 | ||
13030 | discard_cleanups (old_chain); | |
13031 | } | |
13032 | } | |
13033 | ||
13034 | static void | |
13035 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
13036 | struct symtabs_and_lines *sals) | |
13037 | { | |
13038 | struct tracepoint *tp = (struct tracepoint *) b; | |
13039 | ||
13040 | *sals = decode_static_tracepoint_spec (s); | |
13041 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
13042 | { | |
13043 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13044 | sals->nelts = 1; | |
13045 | } | |
13046 | else | |
13047 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13048 | } | |
13049 | ||
13050 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13051 | ||
13052 | static int | |
13053 | strace_marker_p (struct breakpoint *b) | |
13054 | { | |
13055 | return b->ops == &strace_marker_breakpoint_ops; | |
13056 | } | |
13057 | ||
53a5351d | 13058 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13059 | structures. */ |
c906108c SS |
13060 | |
13061 | void | |
fba45db2 | 13062 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13063 | { |
52f0bd74 | 13064 | struct breakpoint *b; |
c906108c | 13065 | |
8a3fe4f8 | 13066 | gdb_assert (bpt != NULL); |
c906108c | 13067 | |
4a64f543 MS |
13068 | /* Has this bp already been deleted? This can happen because |
13069 | multiple lists can hold pointers to bp's. bpstat lists are | |
13070 | especial culprits. | |
13071 | ||
13072 | One example of this happening is a watchpoint's scope bp. When | |
13073 | the scope bp triggers, we notice that the watchpoint is out of | |
13074 | scope, and delete it. We also delete its scope bp. But the | |
13075 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13076 | That bpstat is then checked for auto-deleting bp's, which are | |
13077 | deleted. | |
13078 | ||
13079 | A real solution to this problem might involve reference counts in | |
13080 | bp's, and/or giving them pointers back to their referencing | |
13081 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13082 | storage when no more references were extent. A cheaper bandaid | |
13083 | was chosen. */ | |
c906108c SS |
13084 | if (bpt->type == bp_none) |
13085 | return; | |
13086 | ||
4a64f543 MS |
13087 | /* At least avoid this stale reference until the reference counting |
13088 | of breakpoints gets resolved. */ | |
d0fb5eae | 13089 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13090 | { |
d0fb5eae | 13091 | struct breakpoint *related; |
3a5c3e22 | 13092 | struct watchpoint *w; |
d0fb5eae JK |
13093 | |
13094 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13095 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13096 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13097 | w = (struct watchpoint *) bpt; |
13098 | else | |
13099 | w = NULL; | |
13100 | if (w != NULL) | |
13101 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13102 | |
13103 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13104 | for (related = bpt; related->related_breakpoint != bpt; | |
13105 | related = related->related_breakpoint); | |
13106 | related->related_breakpoint = bpt->related_breakpoint; | |
13107 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13108 | } |
13109 | ||
a9634178 TJB |
13110 | /* watch_command_1 creates a watchpoint but only sets its number if |
13111 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13112 | a problem in that process, we'll be asked to delete the half-created | |
13113 | watchpoint. In that case, don't announce the deletion. */ | |
13114 | if (bpt->number) | |
13115 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13116 | |
c906108c SS |
13117 | if (breakpoint_chain == bpt) |
13118 | breakpoint_chain = bpt->next; | |
13119 | ||
c906108c SS |
13120 | ALL_BREAKPOINTS (b) |
13121 | if (b->next == bpt) | |
c5aa993b JM |
13122 | { |
13123 | b->next = bpt->next; | |
13124 | break; | |
13125 | } | |
c906108c | 13126 | |
f431efe5 PA |
13127 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13128 | been freed. */ | |
13129 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13130 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13131 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13132 | commands are associated with the bpstat; if we remove it here, | |
13133 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13134 | event-top.c won't do anything, and temporary breakpoints with | |
13135 | commands won't work. */ | |
13136 | ||
13137 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13138 | ||
4a64f543 MS |
13139 | /* Now that breakpoint is removed from breakpoint list, update the |
13140 | global location list. This will remove locations that used to | |
13141 | belong to this breakpoint. Do this before freeing the breakpoint | |
13142 | itself, since remove_breakpoint looks at location's owner. It | |
13143 | might be better design to have location completely | |
13144 | self-contained, but it's not the case now. */ | |
b60e7edf | 13145 | update_global_location_list (0); |
74960c60 | 13146 | |
348d480f | 13147 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13148 | /* On the chance that someone will soon try again to delete this |
13149 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13150 | bpt->type = bp_none; |
b8c9b27d | 13151 | xfree (bpt); |
c906108c SS |
13152 | } |
13153 | ||
4d6140d9 AC |
13154 | static void |
13155 | do_delete_breakpoint_cleanup (void *b) | |
13156 | { | |
13157 | delete_breakpoint (b); | |
13158 | } | |
13159 | ||
13160 | struct cleanup * | |
13161 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13162 | { | |
13163 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13164 | } | |
13165 | ||
51be5b68 PA |
13166 | /* Iterator function to call a user-provided callback function once |
13167 | for each of B and its related breakpoints. */ | |
13168 | ||
13169 | static void | |
13170 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13171 | void (*function) (struct breakpoint *, | |
13172 | void *), | |
13173 | void *data) | |
13174 | { | |
13175 | struct breakpoint *related; | |
13176 | ||
13177 | related = b; | |
13178 | do | |
13179 | { | |
13180 | struct breakpoint *next; | |
13181 | ||
13182 | /* FUNCTION may delete RELATED. */ | |
13183 | next = related->related_breakpoint; | |
13184 | ||
13185 | if (next == related) | |
13186 | { | |
13187 | /* RELATED is the last ring entry. */ | |
13188 | function (related, data); | |
13189 | ||
13190 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13191 | B. There's nothing left to do anyway, so just break | |
13192 | out. */ | |
13193 | break; | |
13194 | } | |
13195 | else | |
13196 | function (related, data); | |
13197 | ||
13198 | related = next; | |
13199 | } | |
13200 | while (related != b); | |
13201 | } | |
95a42b64 TT |
13202 | |
13203 | static void | |
13204 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13205 | { | |
13206 | delete_breakpoint (b); | |
13207 | } | |
13208 | ||
51be5b68 PA |
13209 | /* A callback for map_breakpoint_numbers that calls |
13210 | delete_breakpoint. */ | |
13211 | ||
13212 | static void | |
13213 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13214 | { | |
13215 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13216 | } | |
13217 | ||
c906108c | 13218 | void |
fba45db2 | 13219 | delete_command (char *arg, int from_tty) |
c906108c | 13220 | { |
35df4500 | 13221 | struct breakpoint *b, *b_tmp; |
c906108c | 13222 | |
ea9365bb TT |
13223 | dont_repeat (); |
13224 | ||
c906108c SS |
13225 | if (arg == 0) |
13226 | { | |
13227 | int breaks_to_delete = 0; | |
13228 | ||
46c6471b PA |
13229 | /* Delete all breakpoints if no argument. Do not delete |
13230 | internal breakpoints, these have to be deleted with an | |
13231 | explicit breakpoint number argument. */ | |
c5aa993b | 13232 | ALL_BREAKPOINTS (b) |
46c6471b | 13233 | if (user_breakpoint_p (b)) |
973d738b DJ |
13234 | { |
13235 | breaks_to_delete = 1; | |
13236 | break; | |
13237 | } | |
c906108c SS |
13238 | |
13239 | /* Ask user only if there are some breakpoints to delete. */ | |
13240 | if (!from_tty | |
e2e0b3e5 | 13241 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13242 | { |
35df4500 | 13243 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13244 | if (user_breakpoint_p (b)) |
c5aa993b | 13245 | delete_breakpoint (b); |
c906108c SS |
13246 | } |
13247 | } | |
13248 | else | |
51be5b68 | 13249 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13250 | } |
13251 | ||
0d381245 VP |
13252 | static int |
13253 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13254 | { |
0d381245 | 13255 | for (; loc; loc = loc->next) |
8645ff69 UW |
13256 | if (!loc->shlib_disabled |
13257 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13258 | return 0; |
13259 | return 1; | |
fe3f5fa8 VP |
13260 | } |
13261 | ||
776592bf DE |
13262 | /* Subroutine of update_breakpoint_locations to simplify it. |
13263 | Return non-zero if multiple fns in list LOC have the same name. | |
13264 | Null names are ignored. */ | |
13265 | ||
13266 | static int | |
13267 | ambiguous_names_p (struct bp_location *loc) | |
13268 | { | |
13269 | struct bp_location *l; | |
13270 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13271 | (int (*) (const void *, |
13272 | const void *)) streq, | |
776592bf DE |
13273 | NULL, xcalloc, xfree); |
13274 | ||
13275 | for (l = loc; l != NULL; l = l->next) | |
13276 | { | |
13277 | const char **slot; | |
13278 | const char *name = l->function_name; | |
13279 | ||
13280 | /* Allow for some names to be NULL, ignore them. */ | |
13281 | if (name == NULL) | |
13282 | continue; | |
13283 | ||
13284 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13285 | INSERT); | |
4a64f543 MS |
13286 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13287 | returns NULL. */ | |
776592bf DE |
13288 | if (*slot != NULL) |
13289 | { | |
13290 | htab_delete (htab); | |
13291 | return 1; | |
13292 | } | |
13293 | *slot = name; | |
13294 | } | |
13295 | ||
13296 | htab_delete (htab); | |
13297 | return 0; | |
13298 | } | |
13299 | ||
0fb4aa4b PA |
13300 | /* When symbols change, it probably means the sources changed as well, |
13301 | and it might mean the static tracepoint markers are no longer at | |
13302 | the same address or line numbers they used to be at last we | |
13303 | checked. Losing your static tracepoints whenever you rebuild is | |
13304 | undesirable. This function tries to resync/rematch gdb static | |
13305 | tracepoints with the markers on the target, for static tracepoints | |
13306 | that have not been set by marker id. Static tracepoint that have | |
13307 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13308 | The heuristic is: | |
13309 | ||
13310 | 1) For a tracepoint set at a specific address, look for a marker at | |
13311 | the old PC. If one is found there, assume to be the same marker. | |
13312 | If the name / string id of the marker found is different from the | |
13313 | previous known name, assume that means the user renamed the marker | |
13314 | in the sources, and output a warning. | |
13315 | ||
13316 | 2) For a tracepoint set at a given line number, look for a marker | |
13317 | at the new address of the old line number. If one is found there, | |
13318 | assume to be the same marker. If the name / string id of the | |
13319 | marker found is different from the previous known name, assume that | |
13320 | means the user renamed the marker in the sources, and output a | |
13321 | warning. | |
13322 | ||
13323 | 3) If a marker is no longer found at the same address or line, it | |
13324 | may mean the marker no longer exists. But it may also just mean | |
13325 | the code changed a bit. Maybe the user added a few lines of code | |
13326 | that made the marker move up or down (in line number terms). Ask | |
13327 | the target for info about the marker with the string id as we knew | |
13328 | it. If found, update line number and address in the matching | |
13329 | static tracepoint. This will get confused if there's more than one | |
13330 | marker with the same ID (possible in UST, although unadvised | |
13331 | precisely because it confuses tools). */ | |
13332 | ||
13333 | static struct symtab_and_line | |
13334 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13335 | { | |
d9b3f62e | 13336 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13337 | struct static_tracepoint_marker marker; |
13338 | CORE_ADDR pc; | |
13339 | int i; | |
13340 | ||
13341 | pc = sal.pc; | |
13342 | if (sal.line) | |
13343 | find_line_pc (sal.symtab, sal.line, &pc); | |
13344 | ||
13345 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13346 | { | |
d9b3f62e | 13347 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13348 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13349 | b->number, | |
d9b3f62e | 13350 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13351 | |
d9b3f62e PA |
13352 | xfree (tp->static_trace_marker_id); |
13353 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13354 | release_static_tracepoint_marker (&marker); |
13355 | ||
13356 | return sal; | |
13357 | } | |
13358 | ||
13359 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13360 | by string ID. */ | |
13361 | if (!sal.explicit_pc | |
13362 | && sal.line != 0 | |
13363 | && sal.symtab != NULL | |
d9b3f62e | 13364 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13365 | { |
13366 | VEC(static_tracepoint_marker_p) *markers; | |
13367 | ||
13368 | markers | |
d9b3f62e | 13369 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13370 | |
13371 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13372 | { | |
80e1d417 | 13373 | struct symtab_and_line sal2; |
0fb4aa4b | 13374 | struct symbol *sym; |
80e1d417 | 13375 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13376 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 13377 | |
80e1d417 | 13378 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13379 | |
d9b3f62e | 13380 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13381 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13382 | |
13383 | warning (_("marker for static tracepoint %d (%s) not " | |
13384 | "found at previous line number"), | |
d9b3f62e | 13385 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13386 | |
80e1d417 | 13387 | init_sal (&sal2); |
0fb4aa4b | 13388 | |
80e1d417 | 13389 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13390 | |
80e1d417 AS |
13391 | sal2 = find_pc_line (tpmarker->address, 0); |
13392 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13393 | ui_out_text (uiout, "Now in "); |
13394 | if (sym) | |
13395 | { | |
13396 | ui_out_field_string (uiout, "func", | |
13397 | SYMBOL_PRINT_NAME (sym)); | |
13398 | ui_out_text (uiout, " at "); | |
13399 | } | |
80e1d417 | 13400 | ui_out_field_string (uiout, "file", sal2.symtab->filename); |
0fb4aa4b PA |
13401 | ui_out_text (uiout, ":"); |
13402 | ||
13403 | if (ui_out_is_mi_like_p (uiout)) | |
13404 | { | |
80e1d417 | 13405 | char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b PA |
13406 | |
13407 | if (fullname) | |
13408 | ui_out_field_string (uiout, "fullname", fullname); | |
13409 | } | |
13410 | ||
80e1d417 | 13411 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13412 | ui_out_text (uiout, "\n"); |
13413 | ||
80e1d417 | 13414 | b->loc->line_number = sal2.line; |
0fb4aa4b | 13415 | |
f8eba3c6 | 13416 | xfree (b->loc->source_file); |
0fb4aa4b | 13417 | if (sym) |
80e1d417 | 13418 | b->loc->source_file = xstrdup (sal2.symtab->filename); |
0fb4aa4b | 13419 | else |
f8eba3c6 | 13420 | b->loc->source_file = NULL; |
0fb4aa4b PA |
13421 | |
13422 | xfree (b->addr_string); | |
13423 | b->addr_string = xstrprintf ("%s:%d", | |
80e1d417 | 13424 | sal2.symtab->filename, |
f8eba3c6 | 13425 | b->loc->line_number); |
0fb4aa4b PA |
13426 | |
13427 | /* Might be nice to check if function changed, and warn if | |
13428 | so. */ | |
13429 | ||
80e1d417 | 13430 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13431 | } |
13432 | } | |
13433 | return sal; | |
13434 | } | |
13435 | ||
8d3788bd VP |
13436 | /* Returns 1 iff locations A and B are sufficiently same that |
13437 | we don't need to report breakpoint as changed. */ | |
13438 | ||
13439 | static int | |
13440 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13441 | { | |
13442 | while (a && b) | |
13443 | { | |
13444 | if (a->address != b->address) | |
13445 | return 0; | |
13446 | ||
13447 | if (a->shlib_disabled != b->shlib_disabled) | |
13448 | return 0; | |
13449 | ||
13450 | if (a->enabled != b->enabled) | |
13451 | return 0; | |
13452 | ||
13453 | a = a->next; | |
13454 | b = b->next; | |
13455 | } | |
13456 | ||
13457 | if ((a == NULL) != (b == NULL)) | |
13458 | return 0; | |
13459 | ||
13460 | return 1; | |
13461 | } | |
13462 | ||
f1310107 TJB |
13463 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
13464 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
13465 | a ranged breakpoint. */ | |
13466 | ||
0e30163f | 13467 | void |
0d381245 | 13468 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
13469 | struct symtabs_and_lines sals, |
13470 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
13471 | { |
13472 | int i; | |
0d381245 VP |
13473 | struct bp_location *existing_locations = b->loc; |
13474 | ||
f8eba3c6 TT |
13475 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
13476 | { | |
13477 | /* Ranged breakpoints have only one start location and one end | |
13478 | location. */ | |
13479 | b->enable_state = bp_disabled; | |
13480 | update_global_location_list (1); | |
13481 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
13482 | "multiple locations found\n"), | |
13483 | b->number); | |
13484 | return; | |
13485 | } | |
f1310107 | 13486 | |
4a64f543 MS |
13487 | /* If there's no new locations, and all existing locations are |
13488 | pending, don't do anything. This optimizes the common case where | |
13489 | all locations are in the same shared library, that was unloaded. | |
13490 | We'd like to retain the location, so that when the library is | |
13491 | loaded again, we don't loose the enabled/disabled status of the | |
13492 | individual locations. */ | |
0d381245 | 13493 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
13494 | return; |
13495 | ||
fe3f5fa8 VP |
13496 | b->loc = NULL; |
13497 | ||
0d381245 | 13498 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 13499 | { |
f8eba3c6 TT |
13500 | struct bp_location *new_loc; |
13501 | ||
13502 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
13503 | ||
13504 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 13505 | |
0d381245 VP |
13506 | /* Reparse conditions, they might contain references to the |
13507 | old symtab. */ | |
13508 | if (b->cond_string != NULL) | |
13509 | { | |
f1310107 | 13510 | char *s; |
bfd189b1 | 13511 | volatile struct gdb_exception e; |
fe3f5fa8 | 13512 | |
0d381245 VP |
13513 | s = b->cond_string; |
13514 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13515 | { | |
13516 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
13517 | 0); | |
13518 | } | |
13519 | if (e.reason < 0) | |
13520 | { | |
3e43a32a MS |
13521 | warning (_("failed to reevaluate condition " |
13522 | "for breakpoint %d: %s"), | |
0d381245 VP |
13523 | b->number, e.message); |
13524 | new_loc->enabled = 0; | |
13525 | } | |
13526 | } | |
fe3f5fa8 | 13527 | |
f1310107 TJB |
13528 | if (sals_end.nelts) |
13529 | { | |
13530 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
13531 | ||
13532 | new_loc->length = end - sals.sals[0].pc + 1; | |
13533 | } | |
0d381245 | 13534 | } |
fe3f5fa8 | 13535 | |
514f746b AR |
13536 | /* Update locations of permanent breakpoints. */ |
13537 | if (b->enable_state == bp_permanent) | |
13538 | make_breakpoint_permanent (b); | |
13539 | ||
4a64f543 MS |
13540 | /* If possible, carry over 'disable' status from existing |
13541 | breakpoints. */ | |
0d381245 VP |
13542 | { |
13543 | struct bp_location *e = existing_locations; | |
776592bf DE |
13544 | /* If there are multiple breakpoints with the same function name, |
13545 | e.g. for inline functions, comparing function names won't work. | |
13546 | Instead compare pc addresses; this is just a heuristic as things | |
13547 | may have moved, but in practice it gives the correct answer | |
13548 | often enough until a better solution is found. */ | |
13549 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13550 | ||
0d381245 VP |
13551 | for (; e; e = e->next) |
13552 | { | |
13553 | if (!e->enabled && e->function_name) | |
13554 | { | |
13555 | struct bp_location *l = b->loc; | |
776592bf DE |
13556 | if (have_ambiguous_names) |
13557 | { | |
13558 | for (; l; l = l->next) | |
f1310107 | 13559 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13560 | { |
13561 | l->enabled = 0; | |
13562 | break; | |
13563 | } | |
13564 | } | |
13565 | else | |
13566 | { | |
13567 | for (; l; l = l->next) | |
13568 | if (l->function_name | |
13569 | && strcmp (e->function_name, l->function_name) == 0) | |
13570 | { | |
13571 | l->enabled = 0; | |
13572 | break; | |
13573 | } | |
13574 | } | |
0d381245 VP |
13575 | } |
13576 | } | |
13577 | } | |
fe3f5fa8 | 13578 | |
8d3788bd VP |
13579 | if (!locations_are_equal (existing_locations, b->loc)) |
13580 | observer_notify_breakpoint_modified (b); | |
13581 | ||
b60e7edf | 13582 | update_global_location_list (1); |
fe3f5fa8 VP |
13583 | } |
13584 | ||
ef23e705 TJB |
13585 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
13586 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
13587 | ||
13588 | static struct symtabs_and_lines | |
13589 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
13590 | { | |
13591 | char *s; | |
02d20e4a | 13592 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 13593 | volatile struct gdb_exception e; |
ef23e705 | 13594 | |
983af33b | 13595 | gdb_assert (b->ops != NULL); |
ef23e705 | 13596 | s = addr_string; |
ef23e705 TJB |
13597 | |
13598 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13599 | { | |
983af33b | 13600 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
13601 | } |
13602 | if (e.reason < 0) | |
13603 | { | |
13604 | int not_found_and_ok = 0; | |
13605 | /* For pending breakpoints, it's expected that parsing will | |
13606 | fail until the right shared library is loaded. User has | |
13607 | already told to create pending breakpoints and don't need | |
13608 | extra messages. If breakpoint is in bp_shlib_disabled | |
13609 | state, then user already saw the message about that | |
13610 | breakpoint being disabled, and don't want to see more | |
13611 | errors. */ | |
58438ac1 | 13612 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
13613 | && (b->condition_not_parsed |
13614 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 13615 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
13616 | || b->enable_state == bp_disabled)) |
13617 | not_found_and_ok = 1; | |
13618 | ||
13619 | if (!not_found_and_ok) | |
13620 | { | |
13621 | /* We surely don't want to warn about the same breakpoint | |
13622 | 10 times. One solution, implemented here, is disable | |
13623 | the breakpoint on error. Another solution would be to | |
13624 | have separate 'warning emitted' flag. Since this | |
13625 | happens only when a binary has changed, I don't know | |
13626 | which approach is better. */ | |
13627 | b->enable_state = bp_disabled; | |
13628 | throw_exception (e); | |
13629 | } | |
13630 | } | |
13631 | ||
58438ac1 | 13632 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 13633 | { |
f8eba3c6 | 13634 | int i; |
ef23e705 | 13635 | |
f8eba3c6 TT |
13636 | for (i = 0; i < sals.nelts; ++i) |
13637 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
13638 | if (b->condition_not_parsed && s && s[0]) |
13639 | { | |
13640 | char *cond_string = 0; | |
13641 | int thread = -1; | |
13642 | int task = 0; | |
e7e0cddf | 13643 | char *extra_string = NULL; |
ef23e705 TJB |
13644 | |
13645 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
13646 | &cond_string, &thread, &task, |
13647 | &extra_string); | |
ef23e705 TJB |
13648 | if (cond_string) |
13649 | b->cond_string = cond_string; | |
13650 | b->thread = thread; | |
13651 | b->task = task; | |
e7e0cddf SS |
13652 | if (extra_string) |
13653 | b->extra_string = extra_string; | |
ef23e705 TJB |
13654 | b->condition_not_parsed = 0; |
13655 | } | |
13656 | ||
983af33b | 13657 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 13658 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 13659 | |
58438ac1 TT |
13660 | *found = 1; |
13661 | } | |
13662 | else | |
13663 | *found = 0; | |
ef23e705 TJB |
13664 | |
13665 | return sals; | |
13666 | } | |
13667 | ||
348d480f PA |
13668 | /* The default re_set method, for typical hardware or software |
13669 | breakpoints. Reevaluate the breakpoint and recreate its | |
13670 | locations. */ | |
13671 | ||
13672 | static void | |
28010a5d | 13673 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
13674 | { |
13675 | int found; | |
f1310107 | 13676 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 13677 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 13678 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
13679 | |
13680 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
13681 | if (found) | |
13682 | { | |
13683 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 13684 | expanded = sals; |
ef23e705 TJB |
13685 | } |
13686 | ||
f1310107 TJB |
13687 | if (b->addr_string_range_end) |
13688 | { | |
13689 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
13690 | if (found) | |
13691 | { | |
13692 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 13693 | expanded_end = sals_end; |
f1310107 TJB |
13694 | } |
13695 | } | |
13696 | ||
13697 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
13698 | } |
13699 | ||
983af33b SDJ |
13700 | /* Default method for creating SALs from an address string. It basically |
13701 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
13702 | ||
13703 | static void | |
13704 | create_sals_from_address_default (char **arg, | |
13705 | struct linespec_result *canonical, | |
13706 | enum bptype type_wanted, | |
13707 | char *addr_start, char **copy_arg) | |
13708 | { | |
13709 | parse_breakpoint_sals (arg, canonical); | |
13710 | } | |
13711 | ||
13712 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
13713 | function for the `create_breakpoints_sal' method of | |
13714 | breakpoint_ops. */ | |
13715 | ||
13716 | static void | |
13717 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
13718 | struct linespec_result *canonical, | |
13719 | struct linespec_sals *lsal, | |
13720 | char *cond_string, | |
e7e0cddf | 13721 | char *extra_string, |
983af33b SDJ |
13722 | enum bptype type_wanted, |
13723 | enum bpdisp disposition, | |
13724 | int thread, | |
13725 | int task, int ignore_count, | |
13726 | const struct breakpoint_ops *ops, | |
13727 | int from_tty, int enabled, | |
44f238bb | 13728 | int internal, unsigned flags) |
983af33b SDJ |
13729 | { |
13730 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 13731 | extra_string, |
983af33b SDJ |
13732 | type_wanted, disposition, |
13733 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 13734 | enabled, internal, flags); |
983af33b SDJ |
13735 | } |
13736 | ||
13737 | /* Decode the line represented by S by calling decode_line_full. This is the | |
13738 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
13739 | ||
13740 | static void | |
13741 | decode_linespec_default (struct breakpoint *b, char **s, | |
13742 | struct symtabs_and_lines *sals) | |
13743 | { | |
13744 | struct linespec_result canonical; | |
13745 | ||
13746 | init_linespec_result (&canonical); | |
13747 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
13748 | (struct symtab *) NULL, 0, | |
13749 | &canonical, multiple_symbols_all, | |
13750 | b->filter); | |
13751 | ||
13752 | /* We should get 0 or 1 resulting SALs. */ | |
13753 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
13754 | ||
13755 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
13756 | { | |
13757 | struct linespec_sals *lsal; | |
13758 | ||
13759 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
13760 | *sals = lsal->sals; | |
13761 | /* Arrange it so the destructor does not free the | |
13762 | contents. */ | |
13763 | lsal->sals.sals = NULL; | |
13764 | } | |
13765 | ||
13766 | destroy_linespec_result (&canonical); | |
13767 | } | |
13768 | ||
28010a5d PA |
13769 | /* Prepare the global context for a re-set of breakpoint B. */ |
13770 | ||
13771 | static struct cleanup * | |
13772 | prepare_re_set_context (struct breakpoint *b) | |
13773 | { | |
13774 | struct cleanup *cleanups; | |
13775 | ||
13776 | input_radix = b->input_radix; | |
13777 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
13778 | if (b->pspace != NULL) |
13779 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
13780 | set_language (b->language); |
13781 | ||
13782 | return cleanups; | |
ef23e705 TJB |
13783 | } |
13784 | ||
c906108c SS |
13785 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
13786 | The value we return ends up being the return value from catch_errors. | |
13787 | Unused in this case. */ | |
13788 | ||
13789 | static int | |
4efb68b1 | 13790 | breakpoint_re_set_one (void *bint) |
c906108c | 13791 | { |
4a64f543 | 13792 | /* Get past catch_errs. */ |
53a5351d | 13793 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 13794 | struct cleanup *cleanups; |
c906108c | 13795 | |
348d480f PA |
13796 | cleanups = prepare_re_set_context (b); |
13797 | b->ops->re_set (b); | |
13798 | do_cleanups (cleanups); | |
c906108c SS |
13799 | return 0; |
13800 | } | |
13801 | ||
69de3c6a | 13802 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 13803 | void |
69de3c6a | 13804 | breakpoint_re_set (void) |
c906108c | 13805 | { |
35df4500 | 13806 | struct breakpoint *b, *b_tmp; |
c906108c SS |
13807 | enum language save_language; |
13808 | int save_input_radix; | |
6c95b8df | 13809 | struct cleanup *old_chain; |
c5aa993b | 13810 | |
c906108c SS |
13811 | save_language = current_language->la_language; |
13812 | save_input_radix = input_radix; | |
6c95b8df PA |
13813 | old_chain = save_current_program_space (); |
13814 | ||
35df4500 | 13815 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 13816 | { |
4a64f543 | 13817 | /* Format possible error msg. */ |
fe3f5fa8 | 13818 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
13819 | b->number); |
13820 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 13821 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 13822 | do_cleanups (cleanups); |
c5aa993b | 13823 | } |
c906108c SS |
13824 | set_language (save_language); |
13825 | input_radix = save_input_radix; | |
e62c965a | 13826 | |
0756c555 | 13827 | jit_breakpoint_re_set (); |
4efc6507 | 13828 | |
6c95b8df PA |
13829 | do_cleanups (old_chain); |
13830 | ||
af02033e PP |
13831 | create_overlay_event_breakpoint (); |
13832 | create_longjmp_master_breakpoint (); | |
13833 | create_std_terminate_master_breakpoint (); | |
186c406b | 13834 | create_exception_master_breakpoint (); |
1bfeeb0f JL |
13835 | |
13836 | /* While we're at it, reset the skip list too. */ | |
13837 | skip_re_set (); | |
c906108c SS |
13838 | } |
13839 | \f | |
c906108c SS |
13840 | /* Reset the thread number of this breakpoint: |
13841 | ||
13842 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 13843 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 13844 | void |
fba45db2 | 13845 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
13846 | { |
13847 | if (b->thread != -1) | |
13848 | { | |
39f77062 KB |
13849 | if (in_thread_list (inferior_ptid)) |
13850 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
13851 | |
13852 | /* We're being called after following a fork. The new fork is | |
13853 | selected as current, and unless this was a vfork will have a | |
13854 | different program space from the original thread. Reset that | |
13855 | as well. */ | |
13856 | b->loc->pspace = current_program_space; | |
c906108c SS |
13857 | } |
13858 | } | |
13859 | ||
03ac34d5 MS |
13860 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
13861 | If from_tty is nonzero, it prints a message to that effect, | |
13862 | which ends with a period (no newline). */ | |
13863 | ||
c906108c | 13864 | void |
fba45db2 | 13865 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 13866 | { |
52f0bd74 | 13867 | struct breakpoint *b; |
c906108c SS |
13868 | |
13869 | if (count < 0) | |
13870 | count = 0; | |
13871 | ||
13872 | ALL_BREAKPOINTS (b) | |
13873 | if (b->number == bptnum) | |
c5aa993b | 13874 | { |
d77f58be SS |
13875 | if (is_tracepoint (b)) |
13876 | { | |
13877 | if (from_tty && count != 0) | |
13878 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
13879 | bptnum); | |
13880 | return; | |
13881 | } | |
13882 | ||
c5aa993b | 13883 | b->ignore_count = count; |
221ea385 KS |
13884 | if (from_tty) |
13885 | { | |
13886 | if (count == 0) | |
3e43a32a MS |
13887 | printf_filtered (_("Will stop next time " |
13888 | "breakpoint %d is reached."), | |
221ea385 KS |
13889 | bptnum); |
13890 | else if (count == 1) | |
a3f17187 | 13891 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
13892 | bptnum); |
13893 | else | |
3e43a32a MS |
13894 | printf_filtered (_("Will ignore next %d " |
13895 | "crossings of breakpoint %d."), | |
221ea385 KS |
13896 | count, bptnum); |
13897 | } | |
c5aa993b | 13898 | breakpoints_changed (); |
8d3788bd | 13899 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
13900 | return; |
13901 | } | |
c906108c | 13902 | |
8a3fe4f8 | 13903 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
13904 | } |
13905 | ||
c906108c SS |
13906 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
13907 | ||
13908 | static void | |
fba45db2 | 13909 | ignore_command (char *args, int from_tty) |
c906108c SS |
13910 | { |
13911 | char *p = args; | |
52f0bd74 | 13912 | int num; |
c906108c SS |
13913 | |
13914 | if (p == 0) | |
e2e0b3e5 | 13915 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 13916 | |
c906108c | 13917 | num = get_number (&p); |
5c44784c | 13918 | if (num == 0) |
8a3fe4f8 | 13919 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 13920 | if (*p == 0) |
8a3fe4f8 | 13921 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
13922 | |
13923 | set_ignore_count (num, | |
13924 | longest_to_int (value_as_long (parse_and_eval (p))), | |
13925 | from_tty); | |
221ea385 KS |
13926 | if (from_tty) |
13927 | printf_filtered ("\n"); | |
c906108c SS |
13928 | } |
13929 | \f | |
13930 | /* Call FUNCTION on each of the breakpoints | |
13931 | whose numbers are given in ARGS. */ | |
13932 | ||
13933 | static void | |
95a42b64 TT |
13934 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
13935 | void *), | |
13936 | void *data) | |
c906108c | 13937 | { |
52f0bd74 AC |
13938 | int num; |
13939 | struct breakpoint *b, *tmp; | |
11cf8741 | 13940 | int match; |
197f0a60 | 13941 | struct get_number_or_range_state state; |
c906108c | 13942 | |
197f0a60 | 13943 | if (args == 0) |
e2e0b3e5 | 13944 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 13945 | |
197f0a60 TT |
13946 | init_number_or_range (&state, args); |
13947 | ||
13948 | while (!state.finished) | |
c906108c | 13949 | { |
197f0a60 TT |
13950 | char *p = state.string; |
13951 | ||
11cf8741 | 13952 | match = 0; |
c5aa993b | 13953 | |
197f0a60 | 13954 | num = get_number_or_range (&state); |
5c44784c | 13955 | if (num == 0) |
c5aa993b | 13956 | { |
8a3fe4f8 | 13957 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
13958 | } |
13959 | else | |
13960 | { | |
13961 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
13962 | if (b->number == num) | |
13963 | { | |
11cf8741 | 13964 | match = 1; |
cdac0397 | 13965 | function (b, data); |
11cf8741 | 13966 | break; |
5c44784c | 13967 | } |
11cf8741 | 13968 | if (match == 0) |
a3f17187 | 13969 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 13970 | } |
c906108c SS |
13971 | } |
13972 | } | |
13973 | ||
0d381245 VP |
13974 | static struct bp_location * |
13975 | find_location_by_number (char *number) | |
13976 | { | |
13977 | char *dot = strchr (number, '.'); | |
13978 | char *p1; | |
13979 | int bp_num; | |
13980 | int loc_num; | |
13981 | struct breakpoint *b; | |
13982 | struct bp_location *loc; | |
13983 | ||
13984 | *dot = '\0'; | |
13985 | ||
13986 | p1 = number; | |
197f0a60 | 13987 | bp_num = get_number (&p1); |
0d381245 VP |
13988 | if (bp_num == 0) |
13989 | error (_("Bad breakpoint number '%s'"), number); | |
13990 | ||
13991 | ALL_BREAKPOINTS (b) | |
13992 | if (b->number == bp_num) | |
13993 | { | |
13994 | break; | |
13995 | } | |
13996 | ||
13997 | if (!b || b->number != bp_num) | |
13998 | error (_("Bad breakpoint number '%s'"), number); | |
13999 | ||
14000 | p1 = dot+1; | |
197f0a60 | 14001 | loc_num = get_number (&p1); |
0d381245 VP |
14002 | if (loc_num == 0) |
14003 | error (_("Bad breakpoint location number '%s'"), number); | |
14004 | ||
14005 | --loc_num; | |
14006 | loc = b->loc; | |
14007 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14008 | ; | |
14009 | if (!loc) | |
14010 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14011 | ||
14012 | return loc; | |
14013 | } | |
14014 | ||
14015 | ||
1900040c MS |
14016 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14017 | If from_tty is nonzero, it prints a message to that effect, | |
14018 | which ends with a period (no newline). */ | |
14019 | ||
c906108c | 14020 | void |
fba45db2 | 14021 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14022 | { |
14023 | /* Never disable a watchpoint scope breakpoint; we want to | |
14024 | hit them when we leave scope so we can delete both the | |
14025 | watchpoint and its scope breakpoint at that time. */ | |
14026 | if (bpt->type == bp_watchpoint_scope) | |
14027 | return; | |
14028 | ||
c2c6d25f | 14029 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 14030 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
14031 | return; |
14032 | ||
b5de0fa7 | 14033 | bpt->enable_state = bp_disabled; |
c906108c | 14034 | |
b775012e LM |
14035 | /* Mark breakpoint locations modified. */ |
14036 | mark_breakpoint_modified (bpt); | |
14037 | ||
d248b706 KY |
14038 | if (target_supports_enable_disable_tracepoint () |
14039 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14040 | { | |
14041 | struct bp_location *location; | |
14042 | ||
14043 | for (location = bpt->loc; location; location = location->next) | |
14044 | target_disable_tracepoint (location); | |
14045 | } | |
14046 | ||
b60e7edf | 14047 | update_global_location_list (0); |
c906108c | 14048 | |
8d3788bd | 14049 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14050 | } |
14051 | ||
51be5b68 PA |
14052 | /* A callback for iterate_over_related_breakpoints. */ |
14053 | ||
14054 | static void | |
14055 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14056 | { | |
14057 | disable_breakpoint (b); | |
14058 | } | |
14059 | ||
95a42b64 TT |
14060 | /* A callback for map_breakpoint_numbers that calls |
14061 | disable_breakpoint. */ | |
14062 | ||
14063 | static void | |
14064 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14065 | { | |
51be5b68 | 14066 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14067 | } |
14068 | ||
c906108c | 14069 | static void |
fba45db2 | 14070 | disable_command (char *args, int from_tty) |
c906108c | 14071 | { |
c906108c | 14072 | if (args == 0) |
46c6471b PA |
14073 | { |
14074 | struct breakpoint *bpt; | |
14075 | ||
14076 | ALL_BREAKPOINTS (bpt) | |
14077 | if (user_breakpoint_p (bpt)) | |
14078 | disable_breakpoint (bpt); | |
14079 | } | |
0d381245 VP |
14080 | else if (strchr (args, '.')) |
14081 | { | |
14082 | struct bp_location *loc = find_location_by_number (args); | |
14083 | if (loc) | |
d248b706 | 14084 | { |
b775012e LM |
14085 | if (loc->enabled) |
14086 | { | |
14087 | loc->enabled = 0; | |
14088 | mark_breakpoint_location_modified (loc); | |
14089 | } | |
d248b706 KY |
14090 | if (target_supports_enable_disable_tracepoint () |
14091 | && current_trace_status ()->running && loc->owner | |
14092 | && is_tracepoint (loc->owner)) | |
14093 | target_disable_tracepoint (loc); | |
14094 | } | |
b60e7edf | 14095 | update_global_location_list (0); |
0d381245 | 14096 | } |
c906108c | 14097 | else |
95a42b64 | 14098 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
14099 | } |
14100 | ||
14101 | static void | |
816338b5 SS |
14102 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14103 | int count) | |
c906108c | 14104 | { |
afe38095 | 14105 | int target_resources_ok; |
c906108c SS |
14106 | |
14107 | if (bpt->type == bp_hardware_breakpoint) | |
14108 | { | |
14109 | int i; | |
c5aa993b | 14110 | i = hw_breakpoint_used_count (); |
53a5351d | 14111 | target_resources_ok = |
d92524f1 | 14112 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14113 | i + 1, 0); |
c906108c | 14114 | if (target_resources_ok == 0) |
8a3fe4f8 | 14115 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14116 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14117 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14118 | } |
14119 | ||
cc60f2e3 | 14120 | if (is_watchpoint (bpt)) |
c906108c | 14121 | { |
d07205c2 JK |
14122 | /* Initialize it just to avoid a GCC false warning. */ |
14123 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 14124 | volatile struct gdb_exception e; |
dde02812 ES |
14125 | |
14126 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 14127 | { |
3a5c3e22 PA |
14128 | struct watchpoint *w = (struct watchpoint *) bpt; |
14129 | ||
1e718ff1 TJB |
14130 | orig_enable_state = bpt->enable_state; |
14131 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14132 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14133 | } |
dde02812 | 14134 | if (e.reason < 0) |
c5aa993b | 14135 | { |
1e718ff1 | 14136 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14137 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14138 | bpt->number); | |
14139 | return; | |
c5aa993b | 14140 | } |
c906108c | 14141 | } |
0101ce28 | 14142 | |
b4c291bb KH |
14143 | if (bpt->enable_state != bp_permanent) |
14144 | bpt->enable_state = bp_enabled; | |
d248b706 | 14145 | |
b775012e LM |
14146 | bpt->enable_state = bp_enabled; |
14147 | ||
14148 | /* Mark breakpoint locations modified. */ | |
14149 | mark_breakpoint_modified (bpt); | |
14150 | ||
d248b706 KY |
14151 | if (target_supports_enable_disable_tracepoint () |
14152 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14153 | { | |
14154 | struct bp_location *location; | |
14155 | ||
14156 | for (location = bpt->loc; location; location = location->next) | |
14157 | target_enable_tracepoint (location); | |
14158 | } | |
14159 | ||
b4c291bb | 14160 | bpt->disposition = disposition; |
816338b5 | 14161 | bpt->enable_count = count; |
b60e7edf | 14162 | update_global_location_list (1); |
b4c291bb KH |
14163 | breakpoints_changed (); |
14164 | ||
8d3788bd | 14165 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14166 | } |
14167 | ||
fe3f5fa8 | 14168 | |
c906108c | 14169 | void |
fba45db2 | 14170 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14171 | { |
816338b5 | 14172 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14173 | } |
14174 | ||
14175 | static void | |
14176 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14177 | { | |
14178 | enable_breakpoint (bpt); | |
c906108c SS |
14179 | } |
14180 | ||
95a42b64 TT |
14181 | /* A callback for map_breakpoint_numbers that calls |
14182 | enable_breakpoint. */ | |
14183 | ||
14184 | static void | |
14185 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14186 | { | |
51be5b68 | 14187 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14188 | } |
14189 | ||
c906108c SS |
14190 | /* The enable command enables the specified breakpoints (or all defined |
14191 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14192 | in stopping the inferior. */ |
c906108c | 14193 | |
c906108c | 14194 | static void |
fba45db2 | 14195 | enable_command (char *args, int from_tty) |
c906108c | 14196 | { |
c906108c | 14197 | if (args == 0) |
46c6471b PA |
14198 | { |
14199 | struct breakpoint *bpt; | |
14200 | ||
14201 | ALL_BREAKPOINTS (bpt) | |
14202 | if (user_breakpoint_p (bpt)) | |
14203 | enable_breakpoint (bpt); | |
14204 | } | |
0d381245 VP |
14205 | else if (strchr (args, '.')) |
14206 | { | |
14207 | struct bp_location *loc = find_location_by_number (args); | |
14208 | if (loc) | |
d248b706 | 14209 | { |
b775012e LM |
14210 | if (!loc->enabled) |
14211 | { | |
14212 | loc->enabled = 1; | |
14213 | mark_breakpoint_location_modified (loc); | |
14214 | } | |
d248b706 KY |
14215 | if (target_supports_enable_disable_tracepoint () |
14216 | && current_trace_status ()->running && loc->owner | |
14217 | && is_tracepoint (loc->owner)) | |
14218 | target_enable_tracepoint (loc); | |
14219 | } | |
b60e7edf | 14220 | update_global_location_list (1); |
0d381245 | 14221 | } |
c906108c | 14222 | else |
95a42b64 | 14223 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
14224 | } |
14225 | ||
816338b5 SS |
14226 | /* This struct packages up disposition data for application to multiple |
14227 | breakpoints. */ | |
14228 | ||
14229 | struct disp_data | |
14230 | { | |
14231 | enum bpdisp disp; | |
14232 | int count; | |
14233 | }; | |
14234 | ||
c906108c | 14235 | static void |
51be5b68 PA |
14236 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14237 | { | |
816338b5 | 14238 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14239 | |
816338b5 | 14240 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14241 | } |
14242 | ||
14243 | static void | |
14244 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14245 | { |
816338b5 | 14246 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14247 | |
14248 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14249 | } |
14250 | ||
c906108c | 14251 | static void |
fba45db2 | 14252 | enable_once_command (char *args, int from_tty) |
c906108c | 14253 | { |
51be5b68 | 14254 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14255 | } |
14256 | ||
816338b5 SS |
14257 | static void |
14258 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14259 | { | |
14260 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14261 | ||
14262 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14263 | } | |
14264 | ||
14265 | static void | |
14266 | enable_count_command (char *args, int from_tty) | |
14267 | { | |
14268 | int count = get_number (&args); | |
14269 | ||
14270 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14271 | } | |
14272 | ||
c906108c | 14273 | static void |
51be5b68 | 14274 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14275 | { |
816338b5 | 14276 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14277 | |
14278 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14279 | } |
14280 | ||
c906108c | 14281 | static void |
fba45db2 | 14282 | enable_delete_command (char *args, int from_tty) |
c906108c | 14283 | { |
51be5b68 | 14284 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14285 | } |
14286 | \f | |
fa8d40ab JJ |
14287 | static void |
14288 | set_breakpoint_cmd (char *args, int from_tty) | |
14289 | { | |
14290 | } | |
14291 | ||
14292 | static void | |
14293 | show_breakpoint_cmd (char *args, int from_tty) | |
14294 | { | |
14295 | } | |
14296 | ||
1f3b5d1b PP |
14297 | /* Invalidate last known value of any hardware watchpoint if |
14298 | the memory which that value represents has been written to by | |
14299 | GDB itself. */ | |
14300 | ||
14301 | static void | |
14302 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
14303 | const bfd_byte *data) | |
14304 | { | |
14305 | struct breakpoint *bp; | |
14306 | ||
14307 | ALL_BREAKPOINTS (bp) | |
14308 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14309 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14310 | { |
3a5c3e22 | 14311 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14312 | |
3a5c3e22 PA |
14313 | if (wp->val_valid && wp->val) |
14314 | { | |
14315 | struct bp_location *loc; | |
14316 | ||
14317 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14318 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14319 | && loc->address + loc->length > addr | |
14320 | && addr + len > loc->address) | |
14321 | { | |
14322 | value_free (wp->val); | |
14323 | wp->val = NULL; | |
14324 | wp->val_valid = 0; | |
14325 | } | |
14326 | } | |
1f3b5d1b PP |
14327 | } |
14328 | } | |
14329 | ||
1bfeeb0f JL |
14330 | /* Use the last displayed codepoint's values, or nothing |
14331 | if they aren't valid. */ | |
c906108c SS |
14332 | |
14333 | struct symtabs_and_lines | |
f8eba3c6 | 14334 | decode_line_spec_1 (char *string, int flags) |
c906108c SS |
14335 | { |
14336 | struct symtabs_and_lines sals; | |
cc59ec59 | 14337 | |
c906108c | 14338 | if (string == 0) |
8a3fe4f8 | 14339 | error (_("Empty line specification.")); |
1bfeeb0f | 14340 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 14341 | sals = decode_line_1 (&string, flags, |
1bfeeb0f | 14342 | get_last_displayed_symtab (), |
f8eba3c6 | 14343 | get_last_displayed_line ()); |
c906108c | 14344 | else |
f8eba3c6 | 14345 | sals = decode_line_1 (&string, flags, (struct symtab *) NULL, 0); |
c906108c | 14346 | if (*string) |
8a3fe4f8 | 14347 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
14348 | return sals; |
14349 | } | |
8181d85f DJ |
14350 | |
14351 | /* Create and insert a raw software breakpoint at PC. Return an | |
14352 | identifier, which should be used to remove the breakpoint later. | |
14353 | In general, places which call this should be using something on the | |
14354 | breakpoint chain instead; this function should be eliminated | |
14355 | someday. */ | |
14356 | ||
14357 | void * | |
6c95b8df PA |
14358 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
14359 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
14360 | { |
14361 | struct bp_target_info *bp_tgt; | |
14362 | ||
6c95b8df | 14363 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 14364 | |
6c95b8df | 14365 | bp_tgt->placed_address_space = aspace; |
8181d85f | 14366 | bp_tgt->placed_address = pc; |
6c95b8df | 14367 | |
a6d9a66e | 14368 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
14369 | { |
14370 | /* Could not insert the breakpoint. */ | |
14371 | xfree (bp_tgt); | |
14372 | return NULL; | |
14373 | } | |
14374 | ||
14375 | return bp_tgt; | |
14376 | } | |
14377 | ||
4a64f543 MS |
14378 | /* Remove a breakpoint BP inserted by |
14379 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
14380 | |
14381 | int | |
a6d9a66e | 14382 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
14383 | { |
14384 | struct bp_target_info *bp_tgt = bp; | |
14385 | int ret; | |
14386 | ||
a6d9a66e | 14387 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
14388 | xfree (bp_tgt); |
14389 | ||
14390 | return ret; | |
14391 | } | |
14392 | ||
4a64f543 MS |
14393 | /* One (or perhaps two) breakpoints used for software single |
14394 | stepping. */ | |
8181d85f DJ |
14395 | |
14396 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 14397 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
14398 | |
14399 | /* Create and insert a breakpoint for software single step. */ | |
14400 | ||
14401 | void | |
6c95b8df | 14402 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14403 | struct address_space *aspace, |
14404 | CORE_ADDR next_pc) | |
8181d85f DJ |
14405 | { |
14406 | void **bpt_p; | |
14407 | ||
14408 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
14409 | { |
14410 | bpt_p = &single_step_breakpoints[0]; | |
14411 | single_step_gdbarch[0] = gdbarch; | |
14412 | } | |
8181d85f DJ |
14413 | else |
14414 | { | |
14415 | gdb_assert (single_step_breakpoints[1] == NULL); | |
14416 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 14417 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
14418 | } |
14419 | ||
4a64f543 MS |
14420 | /* NOTE drow/2006-04-11: A future improvement to this function would |
14421 | be to only create the breakpoints once, and actually put them on | |
14422 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
14423 | We could adjust the addresses each time they were needed. Doing | |
14424 | this requires corresponding changes elsewhere where single step | |
14425 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 14426 | |
6c95b8df | 14427 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 14428 | if (*bpt_p == NULL) |
5af949e3 UW |
14429 | error (_("Could not insert single-step breakpoint at %s"), |
14430 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
14431 | } |
14432 | ||
f02253f1 HZ |
14433 | /* Check if the breakpoints used for software single stepping |
14434 | were inserted or not. */ | |
14435 | ||
14436 | int | |
14437 | single_step_breakpoints_inserted (void) | |
14438 | { | |
14439 | return (single_step_breakpoints[0] != NULL | |
14440 | || single_step_breakpoints[1] != NULL); | |
14441 | } | |
14442 | ||
8181d85f DJ |
14443 | /* Remove and delete any breakpoints used for software single step. */ |
14444 | ||
14445 | void | |
14446 | remove_single_step_breakpoints (void) | |
14447 | { | |
14448 | gdb_assert (single_step_breakpoints[0] != NULL); | |
14449 | ||
14450 | /* See insert_single_step_breakpoint for more about this deprecated | |
14451 | call. */ | |
a6d9a66e UW |
14452 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
14453 | single_step_breakpoints[0]); | |
14454 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
14455 | single_step_breakpoints[0] = NULL; |
14456 | ||
14457 | if (single_step_breakpoints[1] != NULL) | |
14458 | { | |
a6d9a66e UW |
14459 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
14460 | single_step_breakpoints[1]); | |
14461 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
14462 | single_step_breakpoints[1] = NULL; |
14463 | } | |
14464 | } | |
14465 | ||
d03285ec UW |
14466 | /* Delete software single step breakpoints without removing them from |
14467 | the inferior. This is intended to be used if the inferior's address | |
14468 | space where they were inserted is already gone, e.g. after exit or | |
14469 | exec. */ | |
14470 | ||
14471 | void | |
14472 | cancel_single_step_breakpoints (void) | |
14473 | { | |
14474 | int i; | |
14475 | ||
14476 | for (i = 0; i < 2; i++) | |
14477 | if (single_step_breakpoints[i]) | |
14478 | { | |
14479 | xfree (single_step_breakpoints[i]); | |
14480 | single_step_breakpoints[i] = NULL; | |
14481 | single_step_gdbarch[i] = NULL; | |
14482 | } | |
14483 | } | |
14484 | ||
14485 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
14486 | removing them. */ | |
14487 | ||
14488 | static void | |
14489 | detach_single_step_breakpoints (void) | |
14490 | { | |
14491 | int i; | |
14492 | ||
14493 | for (i = 0; i < 2; i++) | |
14494 | if (single_step_breakpoints[i]) | |
14495 | target_remove_breakpoint (single_step_gdbarch[i], | |
14496 | single_step_breakpoints[i]); | |
14497 | } | |
14498 | ||
4a64f543 MS |
14499 | /* Check whether a software single-step breakpoint is inserted at |
14500 | PC. */ | |
1aafd4da UW |
14501 | |
14502 | static int | |
cc59ec59 MS |
14503 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
14504 | CORE_ADDR pc) | |
1aafd4da UW |
14505 | { |
14506 | int i; | |
14507 | ||
14508 | for (i = 0; i < 2; i++) | |
14509 | { | |
14510 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
14511 | if (bp_tgt |
14512 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
14513 | bp_tgt->placed_address, | |
14514 | aspace, pc)) | |
1aafd4da UW |
14515 | return 1; |
14516 | } | |
14517 | ||
14518 | return 0; | |
14519 | } | |
14520 | ||
a96d9b2e SDJ |
14521 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
14522 | non-zero otherwise. */ | |
14523 | static int | |
14524 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
14525 | { | |
14526 | if (syscall_catchpoint_p (bp) | |
14527 | && bp->enable_state != bp_disabled | |
14528 | && bp->enable_state != bp_call_disabled) | |
14529 | return 1; | |
14530 | else | |
14531 | return 0; | |
14532 | } | |
14533 | ||
14534 | int | |
14535 | catch_syscall_enabled (void) | |
14536 | { | |
fa3064dd YQ |
14537 | struct catch_syscall_inferior_data *inf_data |
14538 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 14539 | |
fa3064dd | 14540 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
14541 | } |
14542 | ||
14543 | int | |
14544 | catching_syscall_number (int syscall_number) | |
14545 | { | |
14546 | struct breakpoint *bp; | |
14547 | ||
14548 | ALL_BREAKPOINTS (bp) | |
14549 | if (is_syscall_catchpoint_enabled (bp)) | |
14550 | { | |
be5c67c1 PA |
14551 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
14552 | ||
14553 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
14554 | { |
14555 | int i, iter; | |
14556 | for (i = 0; | |
be5c67c1 | 14557 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
14558 | i++) |
14559 | if (syscall_number == iter) | |
14560 | return 1; | |
14561 | } | |
14562 | else | |
14563 | return 1; | |
14564 | } | |
14565 | ||
14566 | return 0; | |
14567 | } | |
14568 | ||
14569 | /* Complete syscall names. Used by "catch syscall". */ | |
14570 | static char ** | |
14571 | catch_syscall_completer (struct cmd_list_element *cmd, | |
14572 | char *text, char *word) | |
14573 | { | |
14574 | const char **list = get_syscall_names (); | |
c38eea1a MS |
14575 | char **retlist |
14576 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
cc59ec59 | 14577 | |
c38eea1a MS |
14578 | xfree (list); |
14579 | return retlist; | |
a96d9b2e SDJ |
14580 | } |
14581 | ||
1042e4c0 SS |
14582 | /* Tracepoint-specific operations. */ |
14583 | ||
14584 | /* Set tracepoint count to NUM. */ | |
14585 | static void | |
14586 | set_tracepoint_count (int num) | |
14587 | { | |
14588 | tracepoint_count = num; | |
4fa62494 | 14589 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14590 | } |
14591 | ||
70221824 | 14592 | static void |
1042e4c0 SS |
14593 | trace_command (char *arg, int from_tty) |
14594 | { | |
55aa24fb SDJ |
14595 | struct breakpoint_ops *ops; |
14596 | const char *arg_cp = arg; | |
14597 | ||
14598 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
14599 | ops = &tracepoint_probe_breakpoint_ops; | |
14600 | else | |
14601 | ops = &tracepoint_breakpoint_ops; | |
14602 | ||
8cdf0e15 VP |
14603 | if (create_breakpoint (get_current_arch (), |
14604 | arg, | |
e7e0cddf | 14605 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
14606 | 0 /* tempflag */, |
14607 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
14608 | 0 /* Ignore count */, |
14609 | pending_break_support, | |
55aa24fb | 14610 | ops, |
8cdf0e15 | 14611 | from_tty, |
84f4c1fe | 14612 | 1 /* enabled */, |
44f238bb | 14613 | 0 /* internal */, 0)) |
fd9b8c24 | 14614 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
14615 | } |
14616 | ||
70221824 | 14617 | static void |
7a697b8d SS |
14618 | ftrace_command (char *arg, int from_tty) |
14619 | { | |
8cdf0e15 VP |
14620 | if (create_breakpoint (get_current_arch (), |
14621 | arg, | |
e7e0cddf | 14622 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
14623 | 0 /* tempflag */, |
14624 | bp_fast_tracepoint /* type_wanted */, | |
14625 | 0 /* Ignore count */, | |
14626 | pending_break_support, | |
348d480f | 14627 | &tracepoint_breakpoint_ops, |
0fb4aa4b | 14628 | from_tty, |
84f4c1fe | 14629 | 1 /* enabled */, |
44f238bb | 14630 | 0 /* internal */, 0)) |
0fb4aa4b PA |
14631 | set_tracepoint_count (breakpoint_count); |
14632 | } | |
14633 | ||
14634 | /* strace command implementation. Creates a static tracepoint. */ | |
14635 | ||
70221824 | 14636 | static void |
0fb4aa4b PA |
14637 | strace_command (char *arg, int from_tty) |
14638 | { | |
983af33b SDJ |
14639 | struct breakpoint_ops *ops; |
14640 | ||
14641 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
14642 | or with a normal static tracepoint. */ | |
14643 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
14644 | ops = &strace_marker_breakpoint_ops; | |
14645 | else | |
14646 | ops = &tracepoint_breakpoint_ops; | |
14647 | ||
0fb4aa4b PA |
14648 | if (create_breakpoint (get_current_arch (), |
14649 | arg, | |
e7e0cddf | 14650 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
14651 | 0 /* tempflag */, |
14652 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
14653 | 0 /* Ignore count */, |
14654 | pending_break_support, | |
983af33b | 14655 | ops, |
8cdf0e15 | 14656 | from_tty, |
84f4c1fe | 14657 | 1 /* enabled */, |
44f238bb | 14658 | 0 /* internal */, 0)) |
fd9b8c24 | 14659 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
14660 | } |
14661 | ||
409873ef SS |
14662 | /* Set up a fake reader function that gets command lines from a linked |
14663 | list that was acquired during tracepoint uploading. */ | |
14664 | ||
14665 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 14666 | static int next_cmd; |
409873ef SS |
14667 | |
14668 | static char * | |
14669 | read_uploaded_action (void) | |
14670 | { | |
14671 | char *rslt; | |
14672 | ||
3149d8c1 | 14673 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 14674 | |
3149d8c1 | 14675 | next_cmd++; |
409873ef SS |
14676 | |
14677 | return rslt; | |
14678 | } | |
14679 | ||
00bf0b85 SS |
14680 | /* Given information about a tracepoint as recorded on a target (which |
14681 | can be either a live system or a trace file), attempt to create an | |
14682 | equivalent GDB tracepoint. This is not a reliable process, since | |
14683 | the target does not necessarily have all the information used when | |
14684 | the tracepoint was originally defined. */ | |
14685 | ||
d9b3f62e | 14686 | struct tracepoint * |
00bf0b85 | 14687 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 14688 | { |
409873ef | 14689 | char *addr_str, small_buf[100]; |
d9b3f62e | 14690 | struct tracepoint *tp; |
fd9b8c24 | 14691 | |
409873ef SS |
14692 | if (utp->at_string) |
14693 | addr_str = utp->at_string; | |
14694 | else | |
14695 | { | |
14696 | /* In the absence of a source location, fall back to raw | |
14697 | address. Since there is no way to confirm that the address | |
14698 | means the same thing as when the trace was started, warn the | |
14699 | user. */ | |
3e43a32a MS |
14700 | warning (_("Uploaded tracepoint %d has no " |
14701 | "source location, using raw address"), | |
409873ef SS |
14702 | utp->number); |
14703 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
14704 | addr_str = small_buf; | |
14705 | } | |
14706 | ||
14707 | /* There's not much we can do with a sequence of bytecodes. */ | |
14708 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
14709 | warning (_("Uploaded tracepoint %d condition " |
14710 | "has no source form, ignoring it"), | |
409873ef | 14711 | utp->number); |
d5551862 | 14712 | |
8cdf0e15 | 14713 | if (!create_breakpoint (get_current_arch (), |
409873ef | 14714 | addr_str, |
e7e0cddf SS |
14715 | utp->cond_string, -1, NULL, |
14716 | 0 /* parse cond/thread */, | |
8cdf0e15 | 14717 | 0 /* tempflag */, |
0fb4aa4b | 14718 | utp->type /* type_wanted */, |
8cdf0e15 VP |
14719 | 0 /* Ignore count */, |
14720 | pending_break_support, | |
348d480f | 14721 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 14722 | 0 /* from_tty */, |
84f4c1fe | 14723 | utp->enabled /* enabled */, |
44f238bb PA |
14724 | 0 /* internal */, |
14725 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
14726 | return NULL; |
14727 | ||
00bf0b85 SS |
14728 | set_tracepoint_count (breakpoint_count); |
14729 | ||
409873ef | 14730 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
14731 | tp = get_tracepoint (tracepoint_count); |
14732 | gdb_assert (tp != NULL); | |
d5551862 | 14733 | |
00bf0b85 SS |
14734 | if (utp->pass > 0) |
14735 | { | |
d9b3f62e | 14736 | sprintf (small_buf, "%d %d", utp->pass, tp->base.number); |
00bf0b85 | 14737 | |
409873ef | 14738 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
14739 | } |
14740 | ||
409873ef SS |
14741 | /* If we have uploaded versions of the original commands, set up a |
14742 | special-purpose "reader" function and call the usual command line | |
14743 | reader, then pass the result to the breakpoint command-setting | |
14744 | function. */ | |
3149d8c1 | 14745 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 14746 | { |
409873ef | 14747 | struct command_line *cmd_list; |
00bf0b85 | 14748 | |
409873ef | 14749 | this_utp = utp; |
3149d8c1 | 14750 | next_cmd = 0; |
d5551862 | 14751 | |
409873ef SS |
14752 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
14753 | ||
d9b3f62e | 14754 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 14755 | } |
3149d8c1 SS |
14756 | else if (!VEC_empty (char_ptr, utp->actions) |
14757 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
14758 | warning (_("Uploaded tracepoint %d actions " |
14759 | "have no source form, ignoring them"), | |
409873ef | 14760 | utp->number); |
00bf0b85 | 14761 | |
f196051f SS |
14762 | /* Copy any status information that might be available. */ |
14763 | tp->base.hit_count = utp->hit_count; | |
14764 | tp->traceframe_usage = utp->traceframe_usage; | |
14765 | ||
00bf0b85 | 14766 | return tp; |
d9b3f62e | 14767 | } |
00bf0b85 | 14768 | |
1042e4c0 SS |
14769 | /* Print information on tracepoint number TPNUM_EXP, or all if |
14770 | omitted. */ | |
14771 | ||
14772 | static void | |
e5a67952 | 14773 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 14774 | { |
79a45e25 | 14775 | struct ui_out *uiout = current_uiout; |
e5a67952 | 14776 | int num_printed; |
1042e4c0 | 14777 | |
e5a67952 | 14778 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
14779 | |
14780 | if (num_printed == 0) | |
1042e4c0 | 14781 | { |
e5a67952 | 14782 | if (args == NULL || *args == '\0') |
d77f58be SS |
14783 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
14784 | else | |
e5a67952 | 14785 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 14786 | } |
ad443146 SS |
14787 | |
14788 | default_collect_info (); | |
1042e4c0 SS |
14789 | } |
14790 | ||
4a64f543 | 14791 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
14792 | Not supported by all targets. */ |
14793 | static void | |
14794 | enable_trace_command (char *args, int from_tty) | |
14795 | { | |
14796 | enable_command (args, from_tty); | |
14797 | } | |
14798 | ||
4a64f543 | 14799 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
14800 | Not supported by all targets. */ |
14801 | static void | |
14802 | disable_trace_command (char *args, int from_tty) | |
14803 | { | |
14804 | disable_command (args, from_tty); | |
14805 | } | |
14806 | ||
4a64f543 | 14807 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
14808 | static void |
14809 | delete_trace_command (char *arg, int from_tty) | |
14810 | { | |
35df4500 | 14811 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
14812 | |
14813 | dont_repeat (); | |
14814 | ||
14815 | if (arg == 0) | |
14816 | { | |
14817 | int breaks_to_delete = 0; | |
14818 | ||
14819 | /* Delete all breakpoints if no argument. | |
14820 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
14821 | have to be deleted with an explicit breakpoint number |
14822 | argument. */ | |
1042e4c0 | 14823 | ALL_TRACEPOINTS (b) |
46c6471b | 14824 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
14825 | { |
14826 | breaks_to_delete = 1; | |
14827 | break; | |
14828 | } | |
1042e4c0 SS |
14829 | |
14830 | /* Ask user only if there are some breakpoints to delete. */ | |
14831 | if (!from_tty | |
14832 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
14833 | { | |
35df4500 | 14834 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14835 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 14836 | delete_breakpoint (b); |
1042e4c0 SS |
14837 | } |
14838 | } | |
14839 | else | |
51be5b68 | 14840 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
14841 | } |
14842 | ||
197f0a60 TT |
14843 | /* Helper function for trace_pass_command. */ |
14844 | ||
14845 | static void | |
d9b3f62e | 14846 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 14847 | { |
d9b3f62e PA |
14848 | tp->pass_count = count; |
14849 | observer_notify_tracepoint_modified (tp->base.number); | |
197f0a60 TT |
14850 | if (from_tty) |
14851 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 14852 | tp->base.number, count); |
197f0a60 TT |
14853 | } |
14854 | ||
1042e4c0 SS |
14855 | /* Set passcount for tracepoint. |
14856 | ||
14857 | First command argument is passcount, second is tracepoint number. | |
14858 | If tracepoint number omitted, apply to most recently defined. | |
14859 | Also accepts special argument "all". */ | |
14860 | ||
14861 | static void | |
14862 | trace_pass_command (char *args, int from_tty) | |
14863 | { | |
d9b3f62e | 14864 | struct tracepoint *t1; |
1042e4c0 | 14865 | unsigned int count; |
1042e4c0 SS |
14866 | |
14867 | if (args == 0 || *args == 0) | |
3e43a32a MS |
14868 | error (_("passcount command requires an " |
14869 | "argument (count + optional TP num)")); | |
1042e4c0 | 14870 | |
4a64f543 | 14871 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
14872 | |
14873 | while (*args && isspace ((int) *args)) | |
14874 | args++; | |
14875 | ||
14876 | if (*args && strncasecmp (args, "all", 3) == 0) | |
14877 | { | |
d9b3f62e PA |
14878 | struct breakpoint *b; |
14879 | ||
1042e4c0 | 14880 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
14881 | if (*args) |
14882 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 14883 | |
d9b3f62e | 14884 | ALL_TRACEPOINTS (b) |
197f0a60 | 14885 | { |
d9b3f62e | 14886 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
14887 | trace_pass_set_count (t1, count, from_tty); |
14888 | } | |
14889 | } | |
14890 | else if (*args == '\0') | |
1042e4c0 | 14891 | { |
197f0a60 | 14892 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 14893 | if (t1) |
197f0a60 TT |
14894 | trace_pass_set_count (t1, count, from_tty); |
14895 | } | |
14896 | else | |
14897 | { | |
14898 | struct get_number_or_range_state state; | |
14899 | ||
14900 | init_number_or_range (&state, args); | |
14901 | while (!state.finished) | |
1042e4c0 | 14902 | { |
197f0a60 TT |
14903 | t1 = get_tracepoint_by_number (&args, &state, 1); |
14904 | if (t1) | |
14905 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
14906 | } |
14907 | } | |
1042e4c0 SS |
14908 | } |
14909 | ||
d9b3f62e | 14910 | struct tracepoint * |
1042e4c0 SS |
14911 | get_tracepoint (int num) |
14912 | { | |
14913 | struct breakpoint *t; | |
14914 | ||
14915 | ALL_TRACEPOINTS (t) | |
14916 | if (t->number == num) | |
d9b3f62e | 14917 | return (struct tracepoint *) t; |
1042e4c0 SS |
14918 | |
14919 | return NULL; | |
14920 | } | |
14921 | ||
d5551862 SS |
14922 | /* Find the tracepoint with the given target-side number (which may be |
14923 | different from the tracepoint number after disconnecting and | |
14924 | reconnecting). */ | |
14925 | ||
d9b3f62e | 14926 | struct tracepoint * |
d5551862 SS |
14927 | get_tracepoint_by_number_on_target (int num) |
14928 | { | |
d9b3f62e | 14929 | struct breakpoint *b; |
d5551862 | 14930 | |
d9b3f62e PA |
14931 | ALL_TRACEPOINTS (b) |
14932 | { | |
14933 | struct tracepoint *t = (struct tracepoint *) b; | |
14934 | ||
14935 | if (t->number_on_target == num) | |
14936 | return t; | |
14937 | } | |
d5551862 SS |
14938 | |
14939 | return NULL; | |
14940 | } | |
14941 | ||
1042e4c0 | 14942 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
14943 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
14944 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 14945 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 14946 | struct tracepoint * |
197f0a60 TT |
14947 | get_tracepoint_by_number (char **arg, |
14948 | struct get_number_or_range_state *state, | |
14949 | int optional_p) | |
1042e4c0 SS |
14950 | { |
14951 | extern int tracepoint_count; | |
14952 | struct breakpoint *t; | |
14953 | int tpnum; | |
14954 | char *instring = arg == NULL ? NULL : *arg; | |
14955 | ||
197f0a60 TT |
14956 | if (state) |
14957 | { | |
14958 | gdb_assert (!state->finished); | |
14959 | tpnum = get_number_or_range (state); | |
14960 | } | |
14961 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
14962 | { |
14963 | if (optional_p) | |
14964 | tpnum = tracepoint_count; | |
14965 | else | |
14966 | error_no_arg (_("tracepoint number")); | |
14967 | } | |
14968 | else | |
197f0a60 | 14969 | tpnum = get_number (arg); |
1042e4c0 SS |
14970 | |
14971 | if (tpnum <= 0) | |
14972 | { | |
14973 | if (instring && *instring) | |
14974 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
14975 | instring); | |
14976 | else | |
3e43a32a MS |
14977 | printf_filtered (_("Tracepoint argument missing " |
14978 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
14979 | return NULL; |
14980 | } | |
14981 | ||
14982 | ALL_TRACEPOINTS (t) | |
14983 | if (t->number == tpnum) | |
14984 | { | |
d9b3f62e | 14985 | return (struct tracepoint *) t; |
1042e4c0 SS |
14986 | } |
14987 | ||
1042e4c0 SS |
14988 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
14989 | return NULL; | |
14990 | } | |
14991 | ||
d9b3f62e PA |
14992 | void |
14993 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
14994 | { | |
14995 | if (b->thread != -1) | |
14996 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
14997 | ||
14998 | if (b->task != 0) | |
14999 | fprintf_unfiltered (fp, " task %d", b->task); | |
15000 | ||
15001 | fprintf_unfiltered (fp, "\n"); | |
15002 | } | |
15003 | ||
6149aea9 PA |
15004 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15005 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15006 | on each breakpoint and only include the ones for which it returns | |
15007 | non-zero. */ | |
15008 | ||
1042e4c0 | 15009 | static void |
6149aea9 PA |
15010 | save_breakpoints (char *filename, int from_tty, |
15011 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15012 | { |
15013 | struct breakpoint *tp; | |
6149aea9 | 15014 | int any = 0; |
a7bdde9e | 15015 | char *pathname; |
1042e4c0 | 15016 | struct cleanup *cleanup; |
a7bdde9e | 15017 | struct ui_file *fp; |
6149aea9 | 15018 | int extra_trace_bits = 0; |
1042e4c0 | 15019 | |
6149aea9 PA |
15020 | if (filename == 0 || *filename == 0) |
15021 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15022 | |
15023 | /* See if we have anything to save. */ | |
6149aea9 | 15024 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15025 | { |
6149aea9 | 15026 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15027 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15028 | continue; |
15029 | ||
15030 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15031 | if (filter && !filter (tp)) | |
15032 | continue; | |
15033 | ||
15034 | any = 1; | |
15035 | ||
15036 | if (is_tracepoint (tp)) | |
15037 | { | |
15038 | extra_trace_bits = 1; | |
15039 | ||
15040 | /* We can stop searching. */ | |
15041 | break; | |
15042 | } | |
1042e4c0 | 15043 | } |
6149aea9 PA |
15044 | |
15045 | if (!any) | |
1042e4c0 | 15046 | { |
6149aea9 | 15047 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15048 | return; |
15049 | } | |
15050 | ||
6149aea9 | 15051 | pathname = tilde_expand (filename); |
1042e4c0 | 15052 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 15053 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 15054 | if (!fp) |
6149aea9 PA |
15055 | error (_("Unable to open file '%s' for saving (%s)"), |
15056 | filename, safe_strerror (errno)); | |
a7bdde9e | 15057 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15058 | |
6149aea9 PA |
15059 | if (extra_trace_bits) |
15060 | save_trace_state_variables (fp); | |
8bf6485c | 15061 | |
6149aea9 | 15062 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15063 | { |
6149aea9 | 15064 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15065 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15066 | continue; |
8bf6485c | 15067 | |
6149aea9 PA |
15068 | /* If we have a filter, only save the breakpoints it accepts. */ |
15069 | if (filter && !filter (tp)) | |
15070 | continue; | |
15071 | ||
348d480f | 15072 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15073 | |
6149aea9 PA |
15074 | /* Note, we can't rely on tp->number for anything, as we can't |
15075 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15076 | instead. */ | |
15077 | ||
15078 | if (tp->cond_string) | |
15079 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15080 | ||
15081 | if (tp->ignore_count) | |
15082 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15083 | ||
a7bdde9e | 15084 | if (tp->commands) |
1042e4c0 | 15085 | { |
a7bdde9e VP |
15086 | volatile struct gdb_exception ex; |
15087 | ||
6149aea9 | 15088 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15089 | |
79a45e25 | 15090 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 15091 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 15092 | { |
79a45e25 | 15093 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15094 | } |
79a45e25 | 15095 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 15096 | |
a7bdde9e VP |
15097 | if (ex.reason < 0) |
15098 | throw_exception (ex); | |
1042e4c0 | 15099 | |
a7bdde9e | 15100 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15101 | } |
6149aea9 PA |
15102 | |
15103 | if (tp->enable_state == bp_disabled) | |
15104 | fprintf_unfiltered (fp, "disable\n"); | |
15105 | ||
15106 | /* If this is a multi-location breakpoint, check if the locations | |
15107 | should be individually disabled. Watchpoint locations are | |
15108 | special, and not user visible. */ | |
15109 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15110 | { | |
15111 | struct bp_location *loc; | |
15112 | int n = 1; | |
15113 | ||
15114 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15115 | if (!loc->enabled) | |
15116 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15117 | } | |
1042e4c0 | 15118 | } |
8bf6485c | 15119 | |
6149aea9 | 15120 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15121 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15122 | ||
1042e4c0 SS |
15123 | do_cleanups (cleanup); |
15124 | if (from_tty) | |
6149aea9 PA |
15125 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
15126 | } | |
15127 | ||
15128 | /* The `save breakpoints' command. */ | |
15129 | ||
15130 | static void | |
15131 | save_breakpoints_command (char *args, int from_tty) | |
15132 | { | |
15133 | save_breakpoints (args, from_tty, NULL); | |
15134 | } | |
15135 | ||
15136 | /* The `save tracepoints' command. */ | |
15137 | ||
15138 | static void | |
15139 | save_tracepoints_command (char *args, int from_tty) | |
15140 | { | |
15141 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15142 | } |
15143 | ||
15144 | /* Create a vector of all tracepoints. */ | |
15145 | ||
15146 | VEC(breakpoint_p) * | |
eeae04df | 15147 | all_tracepoints (void) |
1042e4c0 SS |
15148 | { |
15149 | VEC(breakpoint_p) *tp_vec = 0; | |
15150 | struct breakpoint *tp; | |
15151 | ||
15152 | ALL_TRACEPOINTS (tp) | |
15153 | { | |
15154 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15155 | } | |
15156 | ||
15157 | return tp_vec; | |
15158 | } | |
15159 | ||
c906108c | 15160 | \f |
4a64f543 MS |
15161 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15162 | commands. It is defined as a macro to prevent duplication. | |
15163 | COMMAND should be a string constant containing the name of the | |
15164 | command. */ | |
31e2b00f AS |
15165 | #define BREAK_ARGS_HELP(command) \ |
15166 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
15167 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
15168 | If a line number is specified, break at start of code for that line.\n\ | |
15169 | If a function is specified, break at start of code for that function.\n\ | |
15170 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15171 | With no LOCATION, uses current execution address of the selected\n\ |
15172 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15173 | \n\ |
15174 | THREADNUM is the number from \"info threads\".\n\ | |
15175 | CONDITION is a boolean expression.\n\ | |
15176 | \n\ | |
d41c0fc8 PA |
15177 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15178 | conditions are different.\n\ | |
31e2b00f AS |
15179 | \n\ |
15180 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15181 | ||
44feb3ce TT |
15182 | /* List of subcommands for "catch". */ |
15183 | static struct cmd_list_element *catch_cmdlist; | |
15184 | ||
15185 | /* List of subcommands for "tcatch". */ | |
15186 | static struct cmd_list_element *tcatch_cmdlist; | |
15187 | ||
9ac4176b | 15188 | void |
44feb3ce TT |
15189 | add_catch_command (char *name, char *docstring, |
15190 | void (*sfunc) (char *args, int from_tty, | |
15191 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
15192 | char **(*completer) (struct cmd_list_element *cmd, |
15193 | char *text, char *word), | |
44feb3ce TT |
15194 | void *user_data_catch, |
15195 | void *user_data_tcatch) | |
15196 | { | |
15197 | struct cmd_list_element *command; | |
15198 | ||
15199 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15200 | &catch_cmdlist); | |
15201 | set_cmd_sfunc (command, sfunc); | |
15202 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15203 | set_cmd_completer (command, completer); |
44feb3ce TT |
15204 | |
15205 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15206 | &tcatch_cmdlist); | |
15207 | set_cmd_sfunc (command, sfunc); | |
15208 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15209 | set_cmd_completer (command, completer); |
44feb3ce TT |
15210 | } |
15211 | ||
6c95b8df | 15212 | static void |
a79b8f6e | 15213 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 15214 | { |
fa3064dd YQ |
15215 | struct catch_syscall_inferior_data *inf_data |
15216 | = get_catch_syscall_inferior_data (inf); | |
15217 | ||
15218 | inf_data->total_syscalls_count = 0; | |
15219 | inf_data->any_syscall_count = 0; | |
15220 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
15221 | } |
15222 | ||
6149aea9 PA |
15223 | static void |
15224 | save_command (char *arg, int from_tty) | |
15225 | { | |
3e43a32a MS |
15226 | printf_unfiltered (_("\"save\" must be followed by " |
15227 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
15228 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
15229 | } | |
15230 | ||
84f4c1fe PM |
15231 | struct breakpoint * |
15232 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15233 | void *data) | |
15234 | { | |
35df4500 | 15235 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15236 | |
35df4500 | 15237 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15238 | { |
15239 | if ((*callback) (b, data)) | |
15240 | return b; | |
15241 | } | |
15242 | ||
15243 | return NULL; | |
15244 | } | |
15245 | ||
0574c78f GB |
15246 | /* Zero if any of the breakpoint's locations could be a location where |
15247 | functions have been inlined, nonzero otherwise. */ | |
15248 | ||
15249 | static int | |
15250 | is_non_inline_function (struct breakpoint *b) | |
15251 | { | |
15252 | /* The shared library event breakpoint is set on the address of a | |
15253 | non-inline function. */ | |
15254 | if (b->type == bp_shlib_event) | |
15255 | return 1; | |
15256 | ||
15257 | return 0; | |
15258 | } | |
15259 | ||
15260 | /* Nonzero if the specified PC cannot be a location where functions | |
15261 | have been inlined. */ | |
15262 | ||
15263 | int | |
09ac7c10 TT |
15264 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15265 | const struct target_waitstatus *ws) | |
0574c78f GB |
15266 | { |
15267 | struct breakpoint *b; | |
15268 | struct bp_location *bl; | |
15269 | ||
15270 | ALL_BREAKPOINTS (b) | |
15271 | { | |
15272 | if (!is_non_inline_function (b)) | |
15273 | continue; | |
15274 | ||
15275 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15276 | { | |
15277 | if (!bl->shlib_disabled | |
09ac7c10 | 15278 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15279 | return 1; |
15280 | } | |
15281 | } | |
15282 | ||
15283 | return 0; | |
15284 | } | |
15285 | ||
2060206e PA |
15286 | void |
15287 | initialize_breakpoint_ops (void) | |
15288 | { | |
15289 | static int initialized = 0; | |
15290 | ||
15291 | struct breakpoint_ops *ops; | |
15292 | ||
15293 | if (initialized) | |
15294 | return; | |
15295 | initialized = 1; | |
15296 | ||
15297 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15298 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15299 | internal and momentary breakpoints, etc.). */ | |
15300 | ops = &bkpt_base_breakpoint_ops; | |
15301 | *ops = base_breakpoint_ops; | |
15302 | ops->re_set = bkpt_re_set; | |
15303 | ops->insert_location = bkpt_insert_location; | |
15304 | ops->remove_location = bkpt_remove_location; | |
15305 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
15306 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
15307 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
15308 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
15309 | |
15310 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15311 | ops = &bkpt_breakpoint_ops; | |
15312 | *ops = bkpt_base_breakpoint_ops; | |
15313 | ops->re_set = bkpt_re_set; | |
15314 | ops->resources_needed = bkpt_resources_needed; | |
15315 | ops->print_it = bkpt_print_it; | |
15316 | ops->print_mention = bkpt_print_mention; | |
15317 | ops->print_recreate = bkpt_print_recreate; | |
15318 | ||
15319 | /* Ranged breakpoints. */ | |
15320 | ops = &ranged_breakpoint_ops; | |
15321 | *ops = bkpt_breakpoint_ops; | |
15322 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15323 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15324 | ops->print_it = print_it_ranged_breakpoint; | |
15325 | ops->print_one = print_one_ranged_breakpoint; | |
15326 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15327 | ops->print_mention = print_mention_ranged_breakpoint; | |
15328 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15329 | ||
15330 | /* Internal breakpoints. */ | |
15331 | ops = &internal_breakpoint_ops; | |
15332 | *ops = bkpt_base_breakpoint_ops; | |
15333 | ops->re_set = internal_bkpt_re_set; | |
15334 | ops->check_status = internal_bkpt_check_status; | |
15335 | ops->print_it = internal_bkpt_print_it; | |
15336 | ops->print_mention = internal_bkpt_print_mention; | |
15337 | ||
15338 | /* Momentary breakpoints. */ | |
15339 | ops = &momentary_breakpoint_ops; | |
15340 | *ops = bkpt_base_breakpoint_ops; | |
15341 | ops->re_set = momentary_bkpt_re_set; | |
15342 | ops->check_status = momentary_bkpt_check_status; | |
15343 | ops->print_it = momentary_bkpt_print_it; | |
15344 | ops->print_mention = momentary_bkpt_print_mention; | |
15345 | ||
55aa24fb SDJ |
15346 | /* Probe breakpoints. */ |
15347 | ops = &bkpt_probe_breakpoint_ops; | |
15348 | *ops = bkpt_breakpoint_ops; | |
15349 | ops->insert_location = bkpt_probe_insert_location; | |
15350 | ops->remove_location = bkpt_probe_remove_location; | |
15351 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
15352 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
15353 | ||
2060206e PA |
15354 | /* GNU v3 exception catchpoints. */ |
15355 | ops = &gnu_v3_exception_catchpoint_ops; | |
15356 | *ops = bkpt_breakpoint_ops; | |
15357 | ops->print_it = print_it_exception_catchpoint; | |
15358 | ops->print_one = print_one_exception_catchpoint; | |
15359 | ops->print_mention = print_mention_exception_catchpoint; | |
15360 | ops->print_recreate = print_recreate_exception_catchpoint; | |
15361 | ||
15362 | /* Watchpoints. */ | |
15363 | ops = &watchpoint_breakpoint_ops; | |
15364 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15365 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15366 | ops->re_set = re_set_watchpoint; |
15367 | ops->insert_location = insert_watchpoint; | |
15368 | ops->remove_location = remove_watchpoint; | |
15369 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15370 | ops->check_status = check_status_watchpoint; | |
15371 | ops->resources_needed = resources_needed_watchpoint; | |
15372 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15373 | ops->print_it = print_it_watchpoint; | |
15374 | ops->print_mention = print_mention_watchpoint; | |
15375 | ops->print_recreate = print_recreate_watchpoint; | |
15376 | ||
15377 | /* Masked watchpoints. */ | |
15378 | ops = &masked_watchpoint_breakpoint_ops; | |
15379 | *ops = watchpoint_breakpoint_ops; | |
15380 | ops->insert_location = insert_masked_watchpoint; | |
15381 | ops->remove_location = remove_masked_watchpoint; | |
15382 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15383 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15384 | ops->print_it = print_it_masked_watchpoint; | |
15385 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15386 | ops->print_mention = print_mention_masked_watchpoint; | |
15387 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15388 | ||
15389 | /* Tracepoints. */ | |
15390 | ops = &tracepoint_breakpoint_ops; | |
15391 | *ops = base_breakpoint_ops; | |
15392 | ops->re_set = tracepoint_re_set; | |
15393 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15394 | ops->print_one_detail = tracepoint_print_one_detail; | |
15395 | ops->print_mention = tracepoint_print_mention; | |
15396 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
15397 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
15398 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
15399 | ops->decode_linespec = tracepoint_decode_linespec; | |
15400 | ||
55aa24fb SDJ |
15401 | /* Probe tracepoints. */ |
15402 | ops = &tracepoint_probe_breakpoint_ops; | |
15403 | *ops = tracepoint_breakpoint_ops; | |
15404 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
15405 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
15406 | ||
983af33b SDJ |
15407 | /* Static tracepoints with marker (`-m'). */ |
15408 | ops = &strace_marker_breakpoint_ops; | |
15409 | *ops = tracepoint_breakpoint_ops; | |
15410 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
15411 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
15412 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
15413 | |
15414 | /* Fork catchpoints. */ | |
15415 | ops = &catch_fork_breakpoint_ops; | |
15416 | *ops = base_breakpoint_ops; | |
15417 | ops->insert_location = insert_catch_fork; | |
15418 | ops->remove_location = remove_catch_fork; | |
15419 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15420 | ops->print_it = print_it_catch_fork; | |
15421 | ops->print_one = print_one_catch_fork; | |
15422 | ops->print_mention = print_mention_catch_fork; | |
15423 | ops->print_recreate = print_recreate_catch_fork; | |
15424 | ||
15425 | /* Vfork catchpoints. */ | |
15426 | ops = &catch_vfork_breakpoint_ops; | |
15427 | *ops = base_breakpoint_ops; | |
15428 | ops->insert_location = insert_catch_vfork; | |
15429 | ops->remove_location = remove_catch_vfork; | |
15430 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15431 | ops->print_it = print_it_catch_vfork; | |
15432 | ops->print_one = print_one_catch_vfork; | |
15433 | ops->print_mention = print_mention_catch_vfork; | |
15434 | ops->print_recreate = print_recreate_catch_vfork; | |
15435 | ||
15436 | /* Exec catchpoints. */ | |
15437 | ops = &catch_exec_breakpoint_ops; | |
15438 | *ops = base_breakpoint_ops; | |
15439 | ops->dtor = dtor_catch_exec; | |
15440 | ops->insert_location = insert_catch_exec; | |
15441 | ops->remove_location = remove_catch_exec; | |
15442 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15443 | ops->print_it = print_it_catch_exec; | |
15444 | ops->print_one = print_one_catch_exec; | |
15445 | ops->print_mention = print_mention_catch_exec; | |
15446 | ops->print_recreate = print_recreate_catch_exec; | |
15447 | ||
15448 | /* Syscall catchpoints. */ | |
15449 | ops = &catch_syscall_breakpoint_ops; | |
15450 | *ops = base_breakpoint_ops; | |
15451 | ops->dtor = dtor_catch_syscall; | |
15452 | ops->insert_location = insert_catch_syscall; | |
15453 | ops->remove_location = remove_catch_syscall; | |
15454 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
15455 | ops->print_it = print_it_catch_syscall; | |
15456 | ops->print_one = print_one_catch_syscall; | |
15457 | ops->print_mention = print_mention_catch_syscall; | |
15458 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
15459 | |
15460 | /* Solib-related catchpoints. */ | |
15461 | ops = &catch_solib_breakpoint_ops; | |
15462 | *ops = base_breakpoint_ops; | |
15463 | ops->dtor = dtor_catch_solib; | |
15464 | ops->insert_location = insert_catch_solib; | |
15465 | ops->remove_location = remove_catch_solib; | |
15466 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15467 | ops->check_status = check_status_catch_solib; | |
15468 | ops->print_it = print_it_catch_solib; | |
15469 | ops->print_one = print_one_catch_solib; | |
15470 | ops->print_mention = print_mention_catch_solib; | |
15471 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15472 | |
15473 | ops = &dprintf_breakpoint_ops; | |
15474 | *ops = bkpt_base_breakpoint_ops; | |
15475 | ops->re_set = bkpt_re_set; | |
15476 | ops->resources_needed = bkpt_resources_needed; | |
15477 | ops->print_it = bkpt_print_it; | |
15478 | ops->print_mention = bkpt_print_mention; | |
15479 | ops->print_recreate = bkpt_print_recreate; | |
2060206e PA |
15480 | } |
15481 | ||
c906108c | 15482 | void |
fba45db2 | 15483 | _initialize_breakpoint (void) |
c906108c SS |
15484 | { |
15485 | struct cmd_list_element *c; | |
15486 | ||
2060206e PA |
15487 | initialize_breakpoint_ops (); |
15488 | ||
84acb35a | 15489 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 15490 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 15491 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15492 | |
55aa24fb SDJ |
15493 | breakpoint_objfile_key |
15494 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15495 | |
fa3064dd YQ |
15496 | catch_syscall_inferior_data |
15497 | = register_inferior_data_with_cleanup (catch_syscall_inferior_data_cleanup); | |
15498 | ||
c906108c SS |
15499 | breakpoint_chain = 0; |
15500 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15501 | before a breakpoint is set. */ | |
15502 | breakpoint_count = 0; | |
15503 | ||
1042e4c0 SS |
15504 | tracepoint_count = 0; |
15505 | ||
1bedd215 AC |
15506 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15507 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15508 | Usage is `ignore N COUNT'.")); | |
c906108c | 15509 | if (xdb_commands) |
c5aa993b | 15510 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 15511 | |
1bedd215 AC |
15512 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15513 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15514 | Give breakpoint number as argument after \"commands\".\n\ |
15515 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15516 | The commands themselves follow starting on the next line.\n\ | |
15517 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15518 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15519 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15520 | |
1bedd215 AC |
15521 | add_com ("condition", class_breakpoint, condition_command, _("\ |
15522 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 15523 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15524 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 15525 | |
1bedd215 | 15526 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15527 | Set a temporary breakpoint.\n\ |
c906108c SS |
15528 | Like \"break\" except the breakpoint is only temporary,\n\ |
15529 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15530 | by using \"enable delete\" on the breakpoint number.\n\ |
15531 | \n" | |
15532 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15533 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15534 | |
1bedd215 | 15535 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15536 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15537 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15538 | some target hardware may not have this support.\n\ |
15539 | \n" | |
15540 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15541 | set_cmd_completer (c, location_completer); |
c906108c | 15542 | |
1bedd215 | 15543 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15544 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15545 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15546 | so it will be deleted when hit.\n\ |
15547 | \n" | |
15548 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15549 | set_cmd_completer (c, location_completer); |
c906108c | 15550 | |
1bedd215 AC |
15551 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15552 | Enable some breakpoints.\n\ | |
c906108c SS |
15553 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15554 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15555 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15556 | With a subcommand you can enable temporarily."), |
c906108c SS |
15557 | &enablelist, "enable ", 1, &cmdlist); |
15558 | if (xdb_commands) | |
1bedd215 AC |
15559 | add_com ("ab", class_breakpoint, enable_command, _("\ |
15560 | Enable some breakpoints.\n\ | |
c906108c SS |
15561 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15562 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15563 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15564 | With a subcommand you can enable temporarily.")); |
c906108c SS |
15565 | |
15566 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15567 | ||
84951ab5 | 15568 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15569 | Enable some breakpoints.\n\ |
c906108c SS |
15570 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15571 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15572 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15573 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15574 | |
1a966eab AC |
15575 | add_cmd ("once", no_class, enable_once_command, _("\ |
15576 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15577 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15578 | &enablebreaklist); |
15579 | ||
1a966eab AC |
15580 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15581 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15582 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15583 | &enablebreaklist); |
15584 | ||
816338b5 SS |
15585 | add_cmd ("count", no_class, enable_count_command, _("\ |
15586 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15587 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15588 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15589 | &enablebreaklist); | |
15590 | ||
1a966eab AC |
15591 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15592 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15593 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15594 | &enablelist); |
15595 | ||
1a966eab AC |
15596 | add_cmd ("once", no_class, enable_once_command, _("\ |
15597 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15598 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15599 | &enablelist); |
15600 | ||
15601 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15602 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15603 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15604 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15605 | &enablelist); |
15606 | ||
1bedd215 AC |
15607 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15608 | Disable some breakpoints.\n\ | |
c906108c SS |
15609 | Arguments are breakpoint numbers with spaces in between.\n\ |
15610 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15611 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15612 | &disablelist, "disable ", 1, &cmdlist); |
15613 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15614 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
15615 | if (xdb_commands) | |
1bedd215 AC |
15616 | add_com ("sb", class_breakpoint, disable_command, _("\ |
15617 | Disable some breakpoints.\n\ | |
c906108c SS |
15618 | Arguments are breakpoint numbers with spaces in between.\n\ |
15619 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15620 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 15621 | |
1a966eab AC |
15622 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
15623 | Disable some breakpoints.\n\ | |
c906108c SS |
15624 | Arguments are breakpoint numbers with spaces in between.\n\ |
15625 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15626 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 15627 | This command may be abbreviated \"disable\"."), |
c906108c SS |
15628 | &disablelist); |
15629 | ||
1bedd215 AC |
15630 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
15631 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15632 | Arguments are breakpoint numbers with spaces in between.\n\ |
15633 | To delete all breakpoints, give no argument.\n\ | |
15634 | \n\ | |
15635 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 15636 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
15637 | &deletelist, "delete ", 1, &cmdlist); |
15638 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 15639 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 15640 | if (xdb_commands) |
1bedd215 AC |
15641 | add_com ("db", class_breakpoint, delete_command, _("\ |
15642 | Delete some breakpoints.\n\ | |
c906108c | 15643 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 15644 | To delete all breakpoints, give no argument.\n")); |
c906108c | 15645 | |
1a966eab AC |
15646 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
15647 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
15648 | Arguments are breakpoint numbers with spaces in between.\n\ |
15649 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 15650 | This command may be abbreviated \"delete\"."), |
c906108c SS |
15651 | &deletelist); |
15652 | ||
1bedd215 AC |
15653 | add_com ("clear", class_breakpoint, clear_command, _("\ |
15654 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
15655 | Argument may be line number, function name, or \"*\" and an address.\n\ |
15656 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
15657 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
15658 | If an address is specified, breakpoints at that address are cleared.\n\ |
15659 | \n\ | |
15660 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
15661 | is executing in.\n\ |
15662 | \n\ | |
1bedd215 | 15663 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 15664 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 15665 | |
1bedd215 | 15666 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
15667 | Set breakpoint at specified line or function.\n" |
15668 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 15669 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15670 | |
c906108c SS |
15671 | add_com_alias ("b", "break", class_run, 1); |
15672 | add_com_alias ("br", "break", class_run, 1); | |
15673 | add_com_alias ("bre", "break", class_run, 1); | |
15674 | add_com_alias ("brea", "break", class_run, 1); | |
15675 | ||
7681d515 PM |
15676 | if (xdb_commands) |
15677 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
15678 | |
15679 | if (dbx_commands) | |
15680 | { | |
1bedd215 AC |
15681 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
15682 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
15683 | &stoplist, "stop ", 1, &cmdlist); |
15684 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 15685 | _("Break in function or address."), &stoplist); |
c5aa993b | 15686 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 15687 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
15688 | add_com ("status", class_info, breakpoints_info, _("\ |
15689 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15690 | The \"Type\" column indicates one of:\n\ |
15691 | \tbreakpoint - normal breakpoint\n\ | |
15692 | \twatchpoint - watchpoint\n\ | |
15693 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15694 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15695 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15696 | address and file/line number respectively.\n\ |
15697 | \n\ | |
15698 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15699 | are set to the address of the last breakpoint listed unless the command\n\ |
15700 | is prefixed with \"server \".\n\n\ | |
c906108c | 15701 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15702 | breakpoint set.")); |
c906108c SS |
15703 | } |
15704 | ||
1bedd215 | 15705 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 15706 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
15707 | The \"Type\" column indicates one of:\n\ |
15708 | \tbreakpoint - normal breakpoint\n\ | |
15709 | \twatchpoint - watchpoint\n\ | |
15710 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15711 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15712 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15713 | address and file/line number respectively.\n\ |
15714 | \n\ | |
15715 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15716 | are set to the address of the last breakpoint listed unless the command\n\ |
15717 | is prefixed with \"server \".\n\n\ | |
c906108c | 15718 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15719 | breakpoint set.")); |
c906108c | 15720 | |
6b04bdb7 MS |
15721 | add_info_alias ("b", "breakpoints", 1); |
15722 | ||
c906108c | 15723 | if (xdb_commands) |
1bedd215 AC |
15724 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
15725 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15726 | The \"Type\" column indicates one of:\n\ |
15727 | \tbreakpoint - normal breakpoint\n\ | |
15728 | \twatchpoint - watchpoint\n\ | |
15729 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
15730 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
15731 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
15732 | address and file/line number respectively.\n\ |
15733 | \n\ | |
15734 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15735 | are set to the address of the last breakpoint listed unless the command\n\ |
15736 | is prefixed with \"server \".\n\n\ | |
c906108c | 15737 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 15738 | breakpoint set.")); |
c906108c | 15739 | |
1a966eab AC |
15740 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
15741 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
15742 | The \"Type\" column indicates one of:\n\ |
15743 | \tbreakpoint - normal breakpoint\n\ | |
15744 | \twatchpoint - watchpoint\n\ | |
15745 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
15746 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
15747 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
15748 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
15749 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
15750 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
15751 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
15752 | address and file/line number respectively.\n\ |
15753 | \n\ | |
15754 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
15755 | are set to the address of the last breakpoint listed unless the command\n\ |
15756 | is prefixed with \"server \".\n\n\ | |
c906108c | 15757 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 15758 | breakpoint set."), |
c906108c SS |
15759 | &maintenanceinfolist); |
15760 | ||
44feb3ce TT |
15761 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
15762 | Set catchpoints to catch events."), | |
15763 | &catch_cmdlist, "catch ", | |
15764 | 0/*allow-unknown*/, &cmdlist); | |
15765 | ||
15766 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
15767 | Set temporary catchpoints to catch events."), | |
15768 | &tcatch_cmdlist, "tcatch ", | |
15769 | 0/*allow-unknown*/, &cmdlist); | |
15770 | ||
15771 | /* Add catch and tcatch sub-commands. */ | |
15772 | add_catch_command ("catch", _("\ | |
88e7d25d | 15773 | Catch an exception, when caught."), |
44feb3ce | 15774 | catch_catch_command, |
a96d9b2e | 15775 | NULL, |
44feb3ce TT |
15776 | CATCH_PERMANENT, |
15777 | CATCH_TEMPORARY); | |
15778 | add_catch_command ("throw", _("\ | |
88e7d25d | 15779 | Catch an exception, when thrown."), |
44feb3ce | 15780 | catch_throw_command, |
a96d9b2e | 15781 | NULL, |
44feb3ce TT |
15782 | CATCH_PERMANENT, |
15783 | CATCH_TEMPORARY); | |
15784 | add_catch_command ("fork", _("Catch calls to fork."), | |
15785 | catch_fork_command_1, | |
a96d9b2e | 15786 | NULL, |
44feb3ce TT |
15787 | (void *) (uintptr_t) catch_fork_permanent, |
15788 | (void *) (uintptr_t) catch_fork_temporary); | |
15789 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
15790 | catch_fork_command_1, | |
a96d9b2e | 15791 | NULL, |
44feb3ce TT |
15792 | (void *) (uintptr_t) catch_vfork_permanent, |
15793 | (void *) (uintptr_t) catch_vfork_temporary); | |
15794 | add_catch_command ("exec", _("Catch calls to exec."), | |
15795 | catch_exec_command_1, | |
a96d9b2e SDJ |
15796 | NULL, |
15797 | CATCH_PERMANENT, | |
15798 | CATCH_TEMPORARY); | |
edcc5120 TT |
15799 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
15800 | Usage: catch load [REGEX]\n\ | |
15801 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15802 | catch_load_command_1, | |
15803 | NULL, | |
15804 | CATCH_PERMANENT, | |
15805 | CATCH_TEMPORARY); | |
15806 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
15807 | Usage: catch unload [REGEX]\n\ | |
15808 | If REGEX is given, only stop for libraries matching the regular expression."), | |
15809 | catch_unload_command_1, | |
15810 | NULL, | |
15811 | CATCH_PERMANENT, | |
15812 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
15813 | add_catch_command ("syscall", _("\ |
15814 | Catch system calls by their names and/or numbers.\n\ | |
15815 | Arguments say which system calls to catch. If no arguments\n\ | |
15816 | are given, every system call will be caught.\n\ | |
15817 | Arguments, if given, should be one or more system call names\n\ | |
15818 | (if your system supports that), or system call numbers."), | |
15819 | catch_syscall_command_1, | |
15820 | catch_syscall_completer, | |
44feb3ce TT |
15821 | CATCH_PERMANENT, |
15822 | CATCH_TEMPORARY); | |
c5aa993b | 15823 | |
1bedd215 AC |
15824 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
15825 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15826 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 15827 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15828 | an expression changes.\n\ |
15829 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15830 | the memory to which it refers.")); | |
65d12d83 | 15831 | set_cmd_completer (c, expression_completer); |
c906108c | 15832 | |
1bedd215 AC |
15833 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
15834 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 15835 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 15836 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15837 | an expression is read.\n\ |
15838 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15839 | the memory to which it refers.")); | |
65d12d83 | 15840 | set_cmd_completer (c, expression_completer); |
c906108c | 15841 | |
1bedd215 AC |
15842 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
15843 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 15844 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 15845 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
15846 | an expression is either read or written.\n\ |
15847 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
15848 | the memory to which it refers.")); | |
65d12d83 | 15849 | set_cmd_completer (c, expression_completer); |
c906108c | 15850 | |
d77f58be | 15851 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 15852 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 15853 | |
920d2a44 AC |
15854 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
15855 | respond to changes - contrary to the description. */ | |
85c07804 AC |
15856 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
15857 | &can_use_hw_watchpoints, _("\ | |
15858 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
15859 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
15860 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
15861 | such is available. (However, any hardware watchpoints that were\n\ | |
15862 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
15863 | hardware.)"), |
15864 | NULL, | |
920d2a44 | 15865 | show_can_use_hw_watchpoints, |
85c07804 | 15866 | &setlist, &showlist); |
c906108c SS |
15867 | |
15868 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 15869 | |
1042e4c0 SS |
15870 | /* Tracepoint manipulation commands. */ |
15871 | ||
15872 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
15873 | Set a tracepoint at specified line or function.\n\ | |
15874 | \n" | |
15875 | BREAK_ARGS_HELP ("trace") "\n\ | |
15876 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15877 | set_cmd_completer (c, location_completer); | |
15878 | ||
15879 | add_com_alias ("tp", "trace", class_alias, 0); | |
15880 | add_com_alias ("tr", "trace", class_alias, 1); | |
15881 | add_com_alias ("tra", "trace", class_alias, 1); | |
15882 | add_com_alias ("trac", "trace", class_alias, 1); | |
15883 | ||
7a697b8d SS |
15884 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
15885 | Set a fast tracepoint at specified line or function.\n\ | |
15886 | \n" | |
15887 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
15888 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15889 | set_cmd_completer (c, location_completer); | |
15890 | ||
0fb4aa4b PA |
15891 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
15892 | Set a static tracepoint at specified line, function or marker.\n\ | |
15893 | \n\ | |
15894 | strace [LOCATION] [if CONDITION]\n\ | |
15895 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
15896 | or -m MARKER_ID.\n\ | |
15897 | If a line number is specified, probe the marker at start of code\n\ | |
15898 | for that line. If a function is specified, probe the marker at start\n\ | |
15899 | of code for that function. If an address is specified, probe the marker\n\ | |
15900 | at that exact address. If a marker id is specified, probe the marker\n\ | |
15901 | with that name. With no LOCATION, uses current execution address of\n\ | |
15902 | the selected stack frame.\n\ | |
15903 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
15904 | This collects arbitrary user data passed in the probe point call to the\n\ | |
15905 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
15906 | by printing the $_sdata variable like any other convenience variable.\n\ | |
15907 | \n\ | |
15908 | CONDITION is a boolean expression.\n\ | |
15909 | \n\ | |
d41c0fc8 PA |
15910 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
15911 | conditions are different.\n\ | |
0fb4aa4b PA |
15912 | \n\ |
15913 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
15914 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
15915 | set_cmd_completer (c, location_completer); | |
15916 | ||
1042e4c0 | 15917 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 15918 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
15919 | Convenience variable \"$tpnum\" contains the number of the\n\ |
15920 | last tracepoint set.")); | |
15921 | ||
15922 | add_info_alias ("tp", "tracepoints", 1); | |
15923 | ||
15924 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
15925 | Delete specified tracepoints.\n\ | |
15926 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15927 | No argument means delete all tracepoints."), | |
15928 | &deletelist); | |
15929 | ||
15930 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
15931 | Disable specified tracepoints.\n\ | |
15932 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15933 | No argument means disable all tracepoints."), | |
15934 | &disablelist); | |
15935 | deprecate_cmd (c, "disable"); | |
15936 | ||
15937 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
15938 | Enable specified tracepoints.\n\ | |
15939 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
15940 | No argument means enable all tracepoints."), | |
15941 | &enablelist); | |
15942 | deprecate_cmd (c, "enable"); | |
15943 | ||
15944 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
15945 | Set the passcount for a tracepoint.\n\ | |
15946 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
15947 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
15948 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
15949 | ||
6149aea9 PA |
15950 | add_prefix_cmd ("save", class_breakpoint, save_command, |
15951 | _("Save breakpoint definitions as a script."), | |
15952 | &save_cmdlist, "save ", | |
15953 | 0/*allow-unknown*/, &cmdlist); | |
15954 | ||
15955 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
15956 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 15957 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
15958 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
15959 | session to restore them."), | |
15960 | &save_cmdlist); | |
15961 | set_cmd_completer (c, filename_completer); | |
15962 | ||
15963 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 15964 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
15965 | Use the 'source' command in another debug session to restore them."), |
15966 | &save_cmdlist); | |
1042e4c0 SS |
15967 | set_cmd_completer (c, filename_completer); |
15968 | ||
6149aea9 PA |
15969 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
15970 | deprecate_cmd (c, "save tracepoints"); | |
15971 | ||
1bedd215 | 15972 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15973 | Breakpoint specific settings\n\ |
15974 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15975 | pending breakpoint behavior"), |
fa8d40ab JJ |
15976 | &breakpoint_set_cmdlist, "set breakpoint ", |
15977 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 15978 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
15979 | Breakpoint specific settings\n\ |
15980 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 15981 | pending breakpoint behavior"), |
fa8d40ab JJ |
15982 | &breakpoint_show_cmdlist, "show breakpoint ", |
15983 | 0/*allow-unknown*/, &showlist); | |
15984 | ||
7915a72c AC |
15985 | add_setshow_auto_boolean_cmd ("pending", no_class, |
15986 | &pending_break_support, _("\ | |
15987 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
15988 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
15989 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
15990 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
15991 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 15992 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 15993 | NULL, |
920d2a44 | 15994 | show_pending_break_support, |
6e1d7d6c AC |
15995 | &breakpoint_set_cmdlist, |
15996 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
15997 | |
15998 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
15999 | |
16000 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16001 | &automatic_hardware_breakpoints, _("\ | |
16002 | Set automatic usage of hardware breakpoints."), _("\ | |
16003 | Show automatic usage of hardware breakpoints."), _("\ | |
16004 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16005 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16006 | a warning will be emitted for such breakpoints."), | |
16007 | NULL, | |
16008 | show_automatic_hardware_breakpoints, | |
16009 | &breakpoint_set_cmdlist, | |
16010 | &breakpoint_show_cmdlist); | |
74960c60 | 16011 | |
33e5cbd6 PA |
16012 | add_setshow_enum_cmd ("always-inserted", class_support, |
16013 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
16014 | Set mode for inserting breakpoints."), _("\ |
16015 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
16016 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
16017 | resumed, and removed when execution stops. When this mode is on,\n\ | |
16018 | breakpoints are inserted immediately and removed only when the user\n\ | |
16019 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
16020 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
16021 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
16022 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
16023 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
16024 | NULL, |
16025 | &show_always_inserted_mode, | |
16026 | &breakpoint_set_cmdlist, | |
16027 | &breakpoint_show_cmdlist); | |
f1310107 | 16028 | |
b775012e LM |
16029 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16030 | condition_evaluation_enums, | |
16031 | &condition_evaluation_mode_1, _("\ | |
16032 | Set mode of breakpoint condition evaluation."), _("\ | |
16033 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16034 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16035 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16036 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16037 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16038 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16039 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16040 | be set to \"gdb\""), | |
16041 | &set_condition_evaluation_mode, | |
16042 | &show_condition_evaluation_mode, | |
16043 | &breakpoint_set_cmdlist, | |
16044 | &breakpoint_show_cmdlist); | |
16045 | ||
f1310107 TJB |
16046 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16047 | Set a breakpoint for an address range.\n\ | |
16048 | break-range START-LOCATION, END-LOCATION\n\ | |
16049 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16050 | LINENUM, for that line in the current file,\n\ | |
16051 | FILE:LINENUM, for that line in that file,\n\ | |
16052 | +OFFSET, for that number of lines after the current line\n\ | |
16053 | or the start of the range\n\ | |
16054 | FUNCTION, for the first line in that function,\n\ | |
16055 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16056 | *ADDRESS, for the instruction at that address.\n\ | |
16057 | \n\ | |
16058 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16059 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16060 | range (including START-LOCATION and END-LOCATION).")); | |
16061 | ||
e7e0cddf SS |
16062 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16063 | Set a dynamic printf at specified line or function.\n\ | |
16064 | dprintf location,format string,arg1,arg2,...\n\ | |
16065 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16066 | If a line number is specified, break at start of code for that line.\n\ | |
16067 | If a function is specified, break at start of code for that function.\n\ | |
16068 | ")); | |
16069 | set_cmd_completer (c, location_completer); | |
16070 | ||
16071 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16072 | dprintf_style_enums, &dprintf_style, _("\ | |
16073 | Set the style of usage for dynamic printf."), _("\ | |
16074 | Show the style of usage for dynamic printf."), _("\ | |
16075 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16076 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16077 | console, as with the \"printf\" command.\n\ | |
16078 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16079 | program; by default printf(), but you can choose a different function or\n\ | |
16080 | output stream by setting dprintf-function and dprintf-channel."), | |
16081 | update_dprintf_commands, NULL, | |
16082 | &setlist, &showlist); | |
16083 | ||
16084 | dprintf_function = xstrdup ("printf"); | |
16085 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16086 | &dprintf_function, _("\ | |
16087 | Set the function to use for dynamic printf"), _("\ | |
16088 | Show the function to use for dynamic printf"), NULL, | |
16089 | update_dprintf_commands, NULL, | |
16090 | &setlist, &showlist); | |
16091 | ||
16092 | dprintf_channel = xstrdup (""); | |
16093 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16094 | &dprintf_channel, _("\ | |
16095 | Set the channel to use for dynamic printf"), _("\ | |
16096 | Show the channel to use for dynamic printf"), NULL, | |
16097 | update_dprintf_commands, NULL, | |
16098 | &setlist, &showlist); | |
16099 | ||
765dc015 | 16100 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16101 | |
16102 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 16103 | } |