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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" |
e9cafbcc | 63 | #include "cli/cli-utils.h" |
be34f849 | 64 | #include "continuations.h" |
1bfeeb0f JL |
65 | #include "stack.h" |
66 | #include "skip.h" | |
049e32d3 | 67 | #include "record.h" |
c906108c | 68 | |
1042e4c0 SS |
69 | /* readline include files */ |
70 | #include "readline/readline.h" | |
71 | #include "readline/history.h" | |
72 | ||
73 | /* readline defines this. */ | |
74 | #undef savestring | |
75 | ||
034dad6f | 76 | #include "mi/mi-common.h" |
7371cf6d | 77 | #include "python/python.h" |
104c1213 | 78 | |
4a64f543 | 79 | /* Prototypes for local functions. */ |
c906108c | 80 | |
a14ed312 | 81 | static void enable_delete_command (char *, int); |
c906108c | 82 | |
a14ed312 | 83 | static void enable_once_command (char *, int); |
c906108c | 84 | |
a14ed312 | 85 | static void disable_command (char *, int); |
c906108c | 86 | |
a14ed312 | 87 | static void enable_command (char *, int); |
c906108c | 88 | |
95a42b64 TT |
89 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
90 | void *), | |
91 | void *); | |
c906108c | 92 | |
a14ed312 | 93 | static void ignore_command (char *, int); |
c906108c | 94 | |
4efb68b1 | 95 | static int breakpoint_re_set_one (void *); |
c906108c | 96 | |
348d480f PA |
97 | static void breakpoint_re_set_default (struct breakpoint *); |
98 | ||
983af33b SDJ |
99 | static void create_sals_from_address_default (char **, |
100 | struct linespec_result *, | |
101 | enum bptype, char *, | |
102 | char **); | |
103 | ||
104 | static void create_breakpoints_sal_default (struct gdbarch *, | |
105 | struct linespec_result *, | |
106 | struct linespec_sals *, | |
107 | char *, enum bptype, | |
108 | enum bpdisp, int, int, | |
109 | int, | |
110 | const struct breakpoint_ops *, | |
111 | int, int, int); | |
112 | ||
113 | static void decode_linespec_default (struct breakpoint *, char **, | |
114 | struct symtabs_and_lines *); | |
115 | ||
a14ed312 | 116 | static void clear_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void catch_command (char *, int); |
c906108c | 119 | |
a9634178 | 120 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 121 | |
98deb0da | 122 | static void break_command_1 (char *, int, int); |
c906108c | 123 | |
a14ed312 | 124 | static void mention (struct breakpoint *); |
c906108c | 125 | |
348d480f PA |
126 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
127 | enum bptype, | |
c0a91b2b | 128 | const struct breakpoint_ops *); |
3742cc8b YQ |
129 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
130 | const struct symtab_and_line *); | |
131 | ||
4a64f543 MS |
132 | /* This function is used in gdbtk sources and thus can not be made |
133 | static. */ | |
63c252f8 | 134 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 135 | struct symtab_and_line, |
c0a91b2b TT |
136 | enum bptype, |
137 | const struct breakpoint_ops *); | |
c906108c | 138 | |
06edf0c0 PA |
139 | static struct breakpoint * |
140 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
141 | enum bptype type, | |
c0a91b2b | 142 | const struct breakpoint_ops *ops); |
06edf0c0 | 143 | |
76897487 KB |
144 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
145 | ||
a6d9a66e UW |
146 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
147 | CORE_ADDR bpaddr, | |
88f7da05 | 148 | enum bptype bptype); |
76897487 | 149 | |
6c95b8df PA |
150 | static void describe_other_breakpoints (struct gdbarch *, |
151 | struct program_space *, CORE_ADDR, | |
5af949e3 | 152 | struct obj_section *, int); |
c906108c | 153 | |
6c95b8df PA |
154 | static int breakpoint_address_match (struct address_space *aspace1, |
155 | CORE_ADDR addr1, | |
156 | struct address_space *aspace2, | |
157 | CORE_ADDR addr2); | |
158 | ||
85d721b8 PA |
159 | static int watchpoint_locations_match (struct bp_location *loc1, |
160 | struct bp_location *loc2); | |
161 | ||
f1310107 TJB |
162 | static int breakpoint_location_address_match (struct bp_location *bl, |
163 | struct address_space *aspace, | |
164 | CORE_ADDR addr); | |
165 | ||
a14ed312 | 166 | static void breakpoints_info (char *, int); |
c906108c | 167 | |
d77f58be SS |
168 | static void watchpoints_info (char *, int); |
169 | ||
e5a67952 MS |
170 | static int breakpoint_1 (char *, int, |
171 | int (*) (const struct breakpoint *)); | |
c906108c | 172 | |
4efb68b1 | 173 | static int breakpoint_cond_eval (void *); |
c906108c | 174 | |
4efb68b1 | 175 | static void cleanup_executing_breakpoints (void *); |
c906108c | 176 | |
a14ed312 | 177 | static void commands_command (char *, int); |
c906108c | 178 | |
a14ed312 | 179 | static void condition_command (char *, int); |
c906108c | 180 | |
c5aa993b JM |
181 | typedef enum |
182 | { | |
183 | mark_inserted, | |
184 | mark_uninserted | |
185 | } | |
186 | insertion_state_t; | |
c906108c | 187 | |
0bde7532 | 188 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 189 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 190 | |
e514a9d6 | 191 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 192 | |
4efb68b1 | 193 | static int watchpoint_check (void *); |
c906108c | 194 | |
a14ed312 | 195 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 196 | |
a14ed312 | 197 | static int hw_breakpoint_used_count (void); |
c906108c | 198 | |
a1398e0c PA |
199 | static int hw_watchpoint_use_count (struct breakpoint *); |
200 | ||
201 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
202 | enum bptype type, | |
203 | int *other_type_used); | |
c906108c | 204 | |
a14ed312 | 205 | static void hbreak_command (char *, int); |
c906108c | 206 | |
a14ed312 | 207 | static void thbreak_command (char *, int); |
c906108c | 208 | |
51be5b68 | 209 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp); |
c906108c | 210 | |
a14ed312 | 211 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 212 | |
a14ed312 | 213 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 214 | |
a14ed312 | 215 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 216 | |
a14ed312 | 217 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 218 | |
d85310f7 MS |
219 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
220 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 221 | |
a14ed312 | 222 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 223 | |
d03285ec UW |
224 | static void detach_single_step_breakpoints (void); |
225 | ||
6c95b8df PA |
226 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
227 | CORE_ADDR pc); | |
1aafd4da | 228 | |
fe3f5fa8 | 229 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
230 | static void incref_bp_location (struct bp_location *loc); |
231 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 232 | |
39d61571 | 233 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 234 | |
b60e7edf | 235 | static void update_global_location_list (int); |
a5606eee | 236 | |
b60e7edf | 237 | static void update_global_location_list_nothrow (int); |
74960c60 | 238 | |
d77f58be | 239 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
240 | |
241 | static void insert_breakpoint_locations (void); | |
a5606eee | 242 | |
a96d9b2e SDJ |
243 | static int syscall_catchpoint_p (struct breakpoint *b); |
244 | ||
1042e4c0 SS |
245 | static void tracepoints_info (char *, int); |
246 | ||
247 | static void delete_trace_command (char *, int); | |
248 | ||
249 | static void enable_trace_command (char *, int); | |
250 | ||
251 | static void disable_trace_command (char *, int); | |
252 | ||
253 | static void trace_pass_command (char *, int); | |
254 | ||
9c06b0b4 TJB |
255 | static int is_masked_watchpoint (const struct breakpoint *b); |
256 | ||
983af33b SDJ |
257 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
258 | otherwise. */ | |
259 | ||
260 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 261 | |
2060206e PA |
262 | /* The abstract base class all breakpoint_ops structures inherit |
263 | from. */ | |
264 | static struct breakpoint_ops base_breakpoint_ops; | |
265 | ||
266 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
267 | that are implemented on top of software or hardware breakpoints | |
268 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
269 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
270 | ||
271 | /* Internal breakpoints class type. */ | |
06edf0c0 | 272 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
273 | |
274 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
275 | static struct breakpoint_ops momentary_breakpoint_ops; |
276 | ||
2060206e PA |
277 | /* The breakpoint_ops structure to be used in regular user created |
278 | breakpoints. */ | |
279 | struct breakpoint_ops bkpt_breakpoint_ops; | |
280 | ||
5cea2a26 PA |
281 | /* A reference-counted struct command_line. This lets multiple |
282 | breakpoints share a single command list. */ | |
283 | struct counted_command_line | |
284 | { | |
285 | /* The reference count. */ | |
286 | int refc; | |
287 | ||
288 | /* The command list. */ | |
289 | struct command_line *commands; | |
290 | }; | |
291 | ||
292 | struct command_line * | |
293 | breakpoint_commands (struct breakpoint *b) | |
294 | { | |
295 | return b->commands ? b->commands->commands : NULL; | |
296 | } | |
3daf8fe5 | 297 | |
f3b1572e PA |
298 | /* Flag indicating that a command has proceeded the inferior past the |
299 | current breakpoint. */ | |
300 | ||
301 | static int breakpoint_proceeded; | |
302 | ||
956a9fb9 | 303 | const char * |
2cec12e5 AR |
304 | bpdisp_text (enum bpdisp disp) |
305 | { | |
4a64f543 MS |
306 | /* NOTE: the following values are a part of MI protocol and |
307 | represent values of 'disp' field returned when inferior stops at | |
308 | a breakpoint. */ | |
bc043ef3 | 309 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 310 | |
2cec12e5 AR |
311 | return bpdisps[(int) disp]; |
312 | } | |
c906108c | 313 | |
4a64f543 | 314 | /* Prototypes for exported functions. */ |
c906108c | 315 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 316 | if such is available. */ |
c906108c SS |
317 | static int can_use_hw_watchpoints; |
318 | ||
920d2a44 AC |
319 | static void |
320 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
321 | struct cmd_list_element *c, | |
322 | const char *value) | |
323 | { | |
3e43a32a MS |
324 | fprintf_filtered (file, |
325 | _("Debugger's willingness to use " | |
326 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
327 | value); |
328 | } | |
329 | ||
fa8d40ab JJ |
330 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
331 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 332 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
333 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
334 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
335 | static void |
336 | show_pending_break_support (struct ui_file *file, int from_tty, | |
337 | struct cmd_list_element *c, | |
338 | const char *value) | |
339 | { | |
3e43a32a MS |
340 | fprintf_filtered (file, |
341 | _("Debugger's behavior regarding " | |
342 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
343 | value); |
344 | } | |
fa8d40ab | 345 | |
765dc015 | 346 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 347 | set with "break" but falling in read-only memory. |
765dc015 VP |
348 | If 0, gdb will warn about such breakpoints, but won't automatically |
349 | use hardware breakpoints. */ | |
350 | static int automatic_hardware_breakpoints; | |
351 | static void | |
352 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
353 | struct cmd_list_element *c, | |
354 | const char *value) | |
355 | { | |
3e43a32a MS |
356 | fprintf_filtered (file, |
357 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
358 | value); |
359 | } | |
360 | ||
33e5cbd6 PA |
361 | /* If on, gdb will keep breakpoints inserted even as inferior is |
362 | stopped, and immediately insert any new breakpoints. If off, gdb | |
363 | will insert breakpoints into inferior only when resuming it, and | |
364 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
365 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
366 | ||
367 | static const char always_inserted_auto[] = "auto"; | |
368 | static const char always_inserted_on[] = "on"; | |
369 | static const char always_inserted_off[] = "off"; | |
370 | static const char *always_inserted_enums[] = { | |
371 | always_inserted_auto, | |
372 | always_inserted_off, | |
373 | always_inserted_on, | |
374 | NULL | |
375 | }; | |
376 | static const char *always_inserted_mode = always_inserted_auto; | |
377 | static void | |
74960c60 | 378 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 379 | struct cmd_list_element *c, const char *value) |
74960c60 | 380 | { |
33e5cbd6 | 381 | if (always_inserted_mode == always_inserted_auto) |
3e43a32a MS |
382 | fprintf_filtered (file, |
383 | _("Always inserted breakpoint " | |
384 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
385 | value, |
386 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
387 | else | |
3e43a32a MS |
388 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
389 | value); | |
74960c60 VP |
390 | } |
391 | ||
33e5cbd6 PA |
392 | int |
393 | breakpoints_always_inserted_mode (void) | |
394 | { | |
049e32d3 PA |
395 | return ((always_inserted_mode == always_inserted_on |
396 | || (always_inserted_mode == always_inserted_auto && non_stop)) | |
397 | && !RECORD_IS_USED); | |
33e5cbd6 | 398 | } |
765dc015 | 399 | |
a14ed312 | 400 | void _initialize_breakpoint (void); |
c906108c | 401 | |
c906108c SS |
402 | /* Are we executing breakpoint commands? */ |
403 | static int executing_breakpoint_commands; | |
404 | ||
c02f5703 MS |
405 | /* Are overlay event breakpoints enabled? */ |
406 | static int overlay_events_enabled; | |
407 | ||
e09342b5 TJB |
408 | /* See description in breakpoint.h. */ |
409 | int target_exact_watchpoints = 0; | |
410 | ||
c906108c | 411 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 412 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 413 | current breakpoint. */ |
c906108c | 414 | |
5c44784c | 415 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 416 | |
5c44784c JM |
417 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
418 | for (B = breakpoint_chain; \ | |
419 | B ? (TMP=B->next, 1): 0; \ | |
420 | B = TMP) | |
c906108c | 421 | |
4a64f543 MS |
422 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
423 | not provided so update_global_location_list must not be called | |
424 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 425 | |
876fa593 JK |
426 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
427 | for (BP_TMP = bp_location; \ | |
428 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
429 | BP_TMP++) | |
7cc221ef | 430 | |
1042e4c0 SS |
431 | /* Iterator for tracepoints only. */ |
432 | ||
433 | #define ALL_TRACEPOINTS(B) \ | |
434 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 435 | if (is_tracepoint (B)) |
1042e4c0 | 436 | |
7cc221ef | 437 | /* Chains of all breakpoints defined. */ |
c906108c SS |
438 | |
439 | struct breakpoint *breakpoint_chain; | |
440 | ||
876fa593 JK |
441 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
442 | ||
443 | static struct bp_location **bp_location; | |
444 | ||
445 | /* Number of elements of BP_LOCATION. */ | |
446 | ||
447 | static unsigned bp_location_count; | |
448 | ||
4a64f543 MS |
449 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
450 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
451 | result from bp_location_has_shadow. You can use it for roughly | |
452 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
453 | an address you need to read. */ | |
876fa593 JK |
454 | |
455 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
456 | ||
4a64f543 MS |
457 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
458 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
459 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
460 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
461 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
462 | |
463 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 464 | |
4a64f543 MS |
465 | /* The locations that no longer correspond to any breakpoint, unlinked |
466 | from bp_location array, but for which a hit may still be reported | |
467 | by a target. */ | |
20874c92 VP |
468 | VEC(bp_location_p) *moribund_locations = NULL; |
469 | ||
c906108c SS |
470 | /* Number of last breakpoint made. */ |
471 | ||
95a42b64 TT |
472 | static int breakpoint_count; |
473 | ||
86b17b60 PA |
474 | /* The value of `breakpoint_count' before the last command that |
475 | created breakpoints. If the last (break-like) command created more | |
476 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
477 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
478 | static int prev_breakpoint_count; | |
c906108c | 479 | |
1042e4c0 SS |
480 | /* Number of last tracepoint made. */ |
481 | ||
95a42b64 | 482 | static int tracepoint_count; |
1042e4c0 | 483 | |
6149aea9 PA |
484 | static struct cmd_list_element *breakpoint_set_cmdlist; |
485 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 486 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 487 | |
468d015d JJ |
488 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
489 | static int | |
490 | breakpoint_enabled (struct breakpoint *b) | |
491 | { | |
0d381245 | 492 | return (b->enable_state == bp_enabled); |
468d015d JJ |
493 | } |
494 | ||
c906108c SS |
495 | /* Set breakpoint count to NUM. */ |
496 | ||
95a42b64 | 497 | static void |
fba45db2 | 498 | set_breakpoint_count (int num) |
c906108c | 499 | { |
86b17b60 | 500 | prev_breakpoint_count = breakpoint_count; |
c906108c | 501 | breakpoint_count = num; |
4fa62494 | 502 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
503 | } |
504 | ||
86b17b60 PA |
505 | /* Used by `start_rbreak_breakpoints' below, to record the current |
506 | breakpoint count before "rbreak" creates any breakpoint. */ | |
507 | static int rbreak_start_breakpoint_count; | |
508 | ||
95a42b64 TT |
509 | /* Called at the start an "rbreak" command to record the first |
510 | breakpoint made. */ | |
86b17b60 | 511 | |
95a42b64 TT |
512 | void |
513 | start_rbreak_breakpoints (void) | |
514 | { | |
86b17b60 | 515 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
516 | } |
517 | ||
518 | /* Called at the end of an "rbreak" command to record the last | |
519 | breakpoint made. */ | |
86b17b60 | 520 | |
95a42b64 TT |
521 | void |
522 | end_rbreak_breakpoints (void) | |
523 | { | |
86b17b60 | 524 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
525 | } |
526 | ||
4a64f543 | 527 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
528 | |
529 | void | |
fba45db2 | 530 | clear_breakpoint_hit_counts (void) |
c906108c SS |
531 | { |
532 | struct breakpoint *b; | |
533 | ||
534 | ALL_BREAKPOINTS (b) | |
535 | b->hit_count = 0; | |
536 | } | |
537 | ||
9add0f1b TT |
538 | /* Allocate a new counted_command_line with reference count of 1. |
539 | The new structure owns COMMANDS. */ | |
540 | ||
541 | static struct counted_command_line * | |
542 | alloc_counted_command_line (struct command_line *commands) | |
543 | { | |
544 | struct counted_command_line *result | |
545 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 546 | |
9add0f1b TT |
547 | result->refc = 1; |
548 | result->commands = commands; | |
549 | return result; | |
550 | } | |
551 | ||
552 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
553 | ||
554 | static void | |
555 | incref_counted_command_line (struct counted_command_line *cmd) | |
556 | { | |
557 | if (cmd) | |
558 | ++cmd->refc; | |
559 | } | |
560 | ||
561 | /* Decrement reference count. If the reference count reaches 0, | |
562 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
563 | nothing if *CMDP is NULL. */ | |
564 | ||
565 | static void | |
566 | decref_counted_command_line (struct counted_command_line **cmdp) | |
567 | { | |
568 | if (*cmdp) | |
569 | { | |
570 | if (--(*cmdp)->refc == 0) | |
571 | { | |
572 | free_command_lines (&(*cmdp)->commands); | |
573 | xfree (*cmdp); | |
574 | } | |
575 | *cmdp = NULL; | |
576 | } | |
577 | } | |
578 | ||
579 | /* A cleanup function that calls decref_counted_command_line. */ | |
580 | ||
581 | static void | |
582 | do_cleanup_counted_command_line (void *arg) | |
583 | { | |
584 | decref_counted_command_line (arg); | |
585 | } | |
586 | ||
587 | /* Create a cleanup that calls decref_counted_command_line on the | |
588 | argument. */ | |
589 | ||
590 | static struct cleanup * | |
591 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
592 | { | |
593 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
594 | } | |
595 | ||
c906108c | 596 | \f |
48cb2d85 VP |
597 | /* Return the breakpoint with the specified number, or NULL |
598 | if the number does not refer to an existing breakpoint. */ | |
599 | ||
600 | struct breakpoint * | |
601 | get_breakpoint (int num) | |
602 | { | |
603 | struct breakpoint *b; | |
604 | ||
605 | ALL_BREAKPOINTS (b) | |
606 | if (b->number == num) | |
607 | return b; | |
608 | ||
609 | return NULL; | |
610 | } | |
5c44784c | 611 | |
c906108c | 612 | \f |
adc36818 PM |
613 | |
614 | void | |
615 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
616 | int from_tty) | |
617 | { | |
3a5c3e22 PA |
618 | xfree (b->cond_string); |
619 | b->cond_string = NULL; | |
adc36818 | 620 | |
3a5c3e22 | 621 | if (is_watchpoint (b)) |
adc36818 | 622 | { |
3a5c3e22 PA |
623 | struct watchpoint *w = (struct watchpoint *) b; |
624 | ||
625 | xfree (w->cond_exp); | |
626 | w->cond_exp = NULL; | |
627 | } | |
628 | else | |
629 | { | |
630 | struct bp_location *loc; | |
631 | ||
632 | for (loc = b->loc; loc; loc = loc->next) | |
633 | { | |
634 | xfree (loc->cond); | |
635 | loc->cond = NULL; | |
636 | } | |
adc36818 | 637 | } |
adc36818 PM |
638 | |
639 | if (*exp == 0) | |
640 | { | |
641 | if (from_tty) | |
642 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
643 | } | |
644 | else | |
645 | { | |
646 | char *arg = exp; | |
cc59ec59 | 647 | |
adc36818 PM |
648 | /* I don't know if it matters whether this is the string the user |
649 | typed in or the decompiled expression. */ | |
650 | b->cond_string = xstrdup (arg); | |
651 | b->condition_not_parsed = 0; | |
652 | ||
653 | if (is_watchpoint (b)) | |
654 | { | |
3a5c3e22 PA |
655 | struct watchpoint *w = (struct watchpoint *) b; |
656 | ||
adc36818 PM |
657 | innermost_block = NULL; |
658 | arg = exp; | |
3a5c3e22 | 659 | w->cond_exp = parse_exp_1 (&arg, 0, 0); |
adc36818 PM |
660 | if (*arg) |
661 | error (_("Junk at end of expression")); | |
3a5c3e22 | 662 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
663 | } |
664 | else | |
665 | { | |
3a5c3e22 PA |
666 | struct bp_location *loc; |
667 | ||
adc36818 PM |
668 | for (loc = b->loc; loc; loc = loc->next) |
669 | { | |
670 | arg = exp; | |
671 | loc->cond = | |
672 | parse_exp_1 (&arg, block_for_pc (loc->address), 0); | |
673 | if (*arg) | |
674 | error (_("Junk at end of expression")); | |
675 | } | |
676 | } | |
677 | } | |
678 | breakpoints_changed (); | |
8d3788bd | 679 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
680 | } |
681 | ||
c906108c SS |
682 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
683 | ||
684 | static void | |
fba45db2 | 685 | condition_command (char *arg, int from_tty) |
c906108c | 686 | { |
52f0bd74 | 687 | struct breakpoint *b; |
c906108c | 688 | char *p; |
52f0bd74 | 689 | int bnum; |
c906108c SS |
690 | |
691 | if (arg == 0) | |
e2e0b3e5 | 692 | error_no_arg (_("breakpoint number")); |
c906108c SS |
693 | |
694 | p = arg; | |
695 | bnum = get_number (&p); | |
5c44784c | 696 | if (bnum == 0) |
8a3fe4f8 | 697 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
698 | |
699 | ALL_BREAKPOINTS (b) | |
700 | if (b->number == bnum) | |
2f069f6f | 701 | { |
7371cf6d PM |
702 | /* Check if this breakpoint has a Python object assigned to |
703 | it, and if it has a definition of the "stop" | |
704 | method. This method and conditions entered into GDB from | |
705 | the CLI are mutually exclusive. */ | |
706 | if (b->py_bp_object | |
707 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
708 | error (_("Cannot set a condition where a Python 'stop' " | |
709 | "method has been defined in the breakpoint.")); | |
2566ad2d | 710 | set_breakpoint_condition (b, p, from_tty); |
2f069f6f JB |
711 | return; |
712 | } | |
c906108c | 713 | |
8a3fe4f8 | 714 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
715 | } |
716 | ||
a7bdde9e VP |
717 | /* Check that COMMAND do not contain commands that are suitable |
718 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
719 | Throw if any such commands is found. */ |
720 | ||
a7bdde9e VP |
721 | static void |
722 | check_no_tracepoint_commands (struct command_line *commands) | |
723 | { | |
724 | struct command_line *c; | |
cc59ec59 | 725 | |
a7bdde9e VP |
726 | for (c = commands; c; c = c->next) |
727 | { | |
728 | int i; | |
729 | ||
730 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
731 | error (_("The 'while-stepping' command can " |
732 | "only be used for tracepoints")); | |
a7bdde9e VP |
733 | |
734 | for (i = 0; i < c->body_count; ++i) | |
735 | check_no_tracepoint_commands ((c->body_list)[i]); | |
736 | ||
737 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 738 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
739 | command directly. */ |
740 | if (strstr (c->line, "collect ") == c->line) | |
741 | error (_("The 'collect' command can only be used for tracepoints")); | |
742 | ||
51661e93 VP |
743 | if (strstr (c->line, "teval ") == c->line) |
744 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
745 | } |
746 | } | |
747 | ||
d77f58be SS |
748 | /* Encapsulate tests for different types of tracepoints. */ |
749 | ||
d9b3f62e PA |
750 | static int |
751 | is_tracepoint_type (enum bptype type) | |
752 | { | |
753 | return (type == bp_tracepoint | |
754 | || type == bp_fast_tracepoint | |
755 | || type == bp_static_tracepoint); | |
756 | } | |
757 | ||
a7bdde9e | 758 | int |
d77f58be | 759 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 760 | { |
d9b3f62e | 761 | return is_tracepoint_type (b->type); |
a7bdde9e | 762 | } |
d9b3f62e | 763 | |
e5dd4106 | 764 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
765 | breakpoint. This function will throw an exception if a problem is |
766 | found. */ | |
48cb2d85 | 767 | |
95a42b64 TT |
768 | static void |
769 | validate_commands_for_breakpoint (struct breakpoint *b, | |
770 | struct command_line *commands) | |
48cb2d85 | 771 | { |
d77f58be | 772 | if (is_tracepoint (b)) |
a7bdde9e | 773 | { |
4a64f543 MS |
774 | /* We need to verify that each top-level element of commands is |
775 | valid for tracepoints, that there's at most one | |
776 | while-stepping element, and that while-stepping's body has | |
777 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
778 | struct command_line *c; |
779 | struct command_line *while_stepping = 0; | |
780 | for (c = commands; c; c = c->next) | |
781 | { | |
a7bdde9e VP |
782 | if (c->control_type == while_stepping_control) |
783 | { | |
784 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
785 | error (_("The 'while-stepping' command " |
786 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 787 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
788 | error (_("The 'while-stepping' command " |
789 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
790 | |
791 | if (while_stepping) | |
3e43a32a MS |
792 | error (_("The 'while-stepping' command " |
793 | "can be used only once")); | |
a7bdde9e VP |
794 | else |
795 | while_stepping = c; | |
796 | } | |
797 | } | |
798 | if (while_stepping) | |
799 | { | |
800 | struct command_line *c2; | |
801 | ||
802 | gdb_assert (while_stepping->body_count == 1); | |
803 | c2 = while_stepping->body_list[0]; | |
804 | for (; c2; c2 = c2->next) | |
805 | { | |
a7bdde9e VP |
806 | if (c2->control_type == while_stepping_control) |
807 | error (_("The 'while-stepping' command cannot be nested")); | |
808 | } | |
809 | } | |
810 | } | |
811 | else | |
812 | { | |
813 | check_no_tracepoint_commands (commands); | |
814 | } | |
95a42b64 TT |
815 | } |
816 | ||
0fb4aa4b PA |
817 | /* Return a vector of all the static tracepoints set at ADDR. The |
818 | caller is responsible for releasing the vector. */ | |
819 | ||
820 | VEC(breakpoint_p) * | |
821 | static_tracepoints_here (CORE_ADDR addr) | |
822 | { | |
823 | struct breakpoint *b; | |
824 | VEC(breakpoint_p) *found = 0; | |
825 | struct bp_location *loc; | |
826 | ||
827 | ALL_BREAKPOINTS (b) | |
828 | if (b->type == bp_static_tracepoint) | |
829 | { | |
830 | for (loc = b->loc; loc; loc = loc->next) | |
831 | if (loc->address == addr) | |
832 | VEC_safe_push(breakpoint_p, found, b); | |
833 | } | |
834 | ||
835 | return found; | |
836 | } | |
837 | ||
95a42b64 | 838 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 839 | validate that only allowed commands are included. */ |
95a42b64 TT |
840 | |
841 | void | |
4a64f543 MS |
842 | breakpoint_set_commands (struct breakpoint *b, |
843 | struct command_line *commands) | |
95a42b64 TT |
844 | { |
845 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 846 | |
9add0f1b TT |
847 | decref_counted_command_line (&b->commands); |
848 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 | 849 | breakpoints_changed (); |
8d3788bd | 850 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
851 | } |
852 | ||
45a43567 TT |
853 | /* Set the internal `silent' flag on the breakpoint. Note that this |
854 | is not the same as the "silent" that may appear in the breakpoint's | |
855 | commands. */ | |
856 | ||
857 | void | |
858 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
859 | { | |
860 | int old_silent = b->silent; | |
861 | ||
862 | b->silent = silent; | |
863 | if (old_silent != silent) | |
8d3788bd | 864 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
865 | } |
866 | ||
867 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
868 | breakpoint work for any thread. */ | |
869 | ||
870 | void | |
871 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
872 | { | |
873 | int old_thread = b->thread; | |
874 | ||
875 | b->thread = thread; | |
876 | if (old_thread != thread) | |
8d3788bd | 877 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
878 | } |
879 | ||
880 | /* Set the task for this breakpoint. If TASK is 0, make the | |
881 | breakpoint work for any task. */ | |
882 | ||
883 | void | |
884 | breakpoint_set_task (struct breakpoint *b, int task) | |
885 | { | |
886 | int old_task = b->task; | |
887 | ||
888 | b->task = task; | |
889 | if (old_task != task) | |
8d3788bd | 890 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
891 | } |
892 | ||
95a42b64 TT |
893 | void |
894 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
895 | { |
896 | struct breakpoint *b = closure; | |
cc59ec59 | 897 | |
a7bdde9e VP |
898 | validate_actionline (&line, b); |
899 | } | |
900 | ||
95a42b64 TT |
901 | /* A structure used to pass information through |
902 | map_breakpoint_numbers. */ | |
903 | ||
904 | struct commands_info | |
905 | { | |
906 | /* True if the command was typed at a tty. */ | |
907 | int from_tty; | |
86b17b60 PA |
908 | |
909 | /* The breakpoint range spec. */ | |
910 | char *arg; | |
911 | ||
95a42b64 TT |
912 | /* Non-NULL if the body of the commands are being read from this |
913 | already-parsed command. */ | |
914 | struct command_line *control; | |
86b17b60 | 915 | |
95a42b64 TT |
916 | /* The command lines read from the user, or NULL if they have not |
917 | yet been read. */ | |
918 | struct counted_command_line *cmd; | |
919 | }; | |
920 | ||
921 | /* A callback for map_breakpoint_numbers that sets the commands for | |
922 | commands_command. */ | |
923 | ||
c906108c | 924 | static void |
95a42b64 | 925 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 926 | { |
95a42b64 | 927 | struct commands_info *info = data; |
c906108c | 928 | |
95a42b64 TT |
929 | if (info->cmd == NULL) |
930 | { | |
931 | struct command_line *l; | |
5c44784c | 932 | |
95a42b64 TT |
933 | if (info->control != NULL) |
934 | l = copy_command_lines (info->control->body_list[0]); | |
935 | else | |
86b17b60 PA |
936 | { |
937 | struct cleanup *old_chain; | |
938 | char *str; | |
c5aa993b | 939 | |
3e43a32a MS |
940 | str = xstrprintf (_("Type commands for breakpoint(s) " |
941 | "%s, one per line."), | |
86b17b60 PA |
942 | info->arg); |
943 | ||
944 | old_chain = make_cleanup (xfree, str); | |
945 | ||
946 | l = read_command_lines (str, | |
947 | info->from_tty, 1, | |
d77f58be | 948 | (is_tracepoint (b) |
86b17b60 PA |
949 | ? check_tracepoint_command : 0), |
950 | b); | |
951 | ||
952 | do_cleanups (old_chain); | |
953 | } | |
a7bdde9e | 954 | |
95a42b64 TT |
955 | info->cmd = alloc_counted_command_line (l); |
956 | } | |
957 | ||
958 | /* If a breakpoint was on the list more than once, we don't need to | |
959 | do anything. */ | |
960 | if (b->commands != info->cmd) | |
961 | { | |
962 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
963 | incref_counted_command_line (info->cmd); | |
964 | decref_counted_command_line (&b->commands); | |
965 | b->commands = info->cmd; | |
966 | breakpoints_changed (); | |
8d3788bd | 967 | observer_notify_breakpoint_modified (b); |
c5aa993b | 968 | } |
95a42b64 TT |
969 | } |
970 | ||
971 | static void | |
4a64f543 MS |
972 | commands_command_1 (char *arg, int from_tty, |
973 | struct command_line *control) | |
95a42b64 TT |
974 | { |
975 | struct cleanup *cleanups; | |
976 | struct commands_info info; | |
977 | ||
978 | info.from_tty = from_tty; | |
979 | info.control = control; | |
980 | info.cmd = NULL; | |
981 | /* If we read command lines from the user, then `info' will hold an | |
982 | extra reference to the commands that we must clean up. */ | |
983 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
984 | ||
985 | if (arg == NULL || !*arg) | |
986 | { | |
86b17b60 | 987 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
988 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
989 | breakpoint_count); | |
95a42b64 TT |
990 | else if (breakpoint_count > 0) |
991 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
992 | else |
993 | { | |
994 | /* So that we don't try to free the incoming non-NULL | |
995 | argument in the cleanup below. Mapping breakpoint | |
996 | numbers will fail in this case. */ | |
997 | arg = NULL; | |
998 | } | |
95a42b64 | 999 | } |
9766ced4 SS |
1000 | else |
1001 | /* The command loop has some static state, so we need to preserve | |
1002 | our argument. */ | |
1003 | arg = xstrdup (arg); | |
86b17b60 PA |
1004 | |
1005 | if (arg != NULL) | |
1006 | make_cleanup (xfree, arg); | |
1007 | ||
1008 | info.arg = arg; | |
95a42b64 TT |
1009 | |
1010 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1011 | ||
1012 | if (info.cmd == NULL) | |
1013 | error (_("No breakpoints specified.")); | |
1014 | ||
1015 | do_cleanups (cleanups); | |
1016 | } | |
1017 | ||
1018 | static void | |
1019 | commands_command (char *arg, int from_tty) | |
1020 | { | |
1021 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1022 | } |
40c03ae8 EZ |
1023 | |
1024 | /* Like commands_command, but instead of reading the commands from | |
1025 | input stream, takes them from an already parsed command structure. | |
1026 | ||
1027 | This is used by cli-script.c to DTRT with breakpoint commands | |
1028 | that are part of if and while bodies. */ | |
1029 | enum command_control_type | |
1030 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1031 | { | |
95a42b64 TT |
1032 | commands_command_1 (arg, 0, cmd); |
1033 | return simple_control; | |
40c03ae8 | 1034 | } |
876fa593 JK |
1035 | |
1036 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1037 | ||
1038 | static int | |
1039 | bp_location_has_shadow (struct bp_location *bl) | |
1040 | { | |
1041 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1042 | return 0; | |
1043 | if (!bl->inserted) | |
1044 | return 0; | |
1045 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1046 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1047 | return 0; |
1048 | return 1; | |
1049 | } | |
1050 | ||
8defab1a | 1051 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1052 | by replacing any memory breakpoints with their shadowed contents. |
1053 | ||
1054 | The range of shadowed area by each bp_location is: | |
35df4500 TJB |
1055 | bl->address - bp_location_placed_address_before_address_max |
1056 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1057 | The range we were requested to resolve shadows for is: |
1058 | memaddr ... memaddr + len | |
1059 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1060 | memaddr + len <= (bl->address |
1061 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1062 | and: |
35df4500 | 1063 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1064 | |
8defab1a | 1065 | void |
f0ba3972 PA |
1066 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1067 | const gdb_byte *writebuf_org, | |
1068 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1069 | { |
4a64f543 MS |
1070 | /* Left boundary, right boundary and median element of our binary |
1071 | search. */ | |
876fa593 JK |
1072 | unsigned bc_l, bc_r, bc; |
1073 | ||
4a64f543 MS |
1074 | /* Find BC_L which is a leftmost element which may affect BUF |
1075 | content. It is safe to report lower value but a failure to | |
1076 | report higher one. */ | |
876fa593 JK |
1077 | |
1078 | bc_l = 0; | |
1079 | bc_r = bp_location_count; | |
1080 | while (bc_l + 1 < bc_r) | |
1081 | { | |
35df4500 | 1082 | struct bp_location *bl; |
876fa593 JK |
1083 | |
1084 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1085 | bl = bp_location[bc]; |
876fa593 | 1086 | |
4a64f543 MS |
1087 | /* Check first BL->ADDRESS will not overflow due to the added |
1088 | constant. Then advance the left boundary only if we are sure | |
1089 | the BC element can in no way affect the BUF content (MEMADDR | |
1090 | to MEMADDR + LEN range). | |
876fa593 | 1091 | |
4a64f543 MS |
1092 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1093 | offset so that we cannot miss a breakpoint with its shadow | |
1094 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1095 | |
35df4500 TJB |
1096 | if ((bl->address + bp_location_shadow_len_after_address_max |
1097 | >= bl->address) | |
1098 | && (bl->address + bp_location_shadow_len_after_address_max | |
1099 | <= memaddr)) | |
876fa593 JK |
1100 | bc_l = bc; |
1101 | else | |
1102 | bc_r = bc; | |
1103 | } | |
1104 | ||
128070bb PA |
1105 | /* Due to the binary search above, we need to make sure we pick the |
1106 | first location that's at BC_L's address. E.g., if there are | |
1107 | multiple locations at the same address, BC_L may end up pointing | |
1108 | at a duplicate location, and miss the "master"/"inserted" | |
1109 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1110 | B: | |
1111 | ||
1112 | L1@A, L2@A, L3@B, ... | |
1113 | ||
1114 | BC_L could end up pointing at location L2, while the "master" | |
1115 | location could be L1. Since the `loc->inserted' flag is only set | |
1116 | on "master" locations, we'd forget to restore the shadow of L1 | |
1117 | and L2. */ | |
1118 | while (bc_l > 0 | |
1119 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1120 | bc_l--; | |
1121 | ||
876fa593 JK |
1122 | /* Now do full processing of the found relevant range of elements. */ |
1123 | ||
1124 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1125 | { |
35df4500 | 1126 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1127 | CORE_ADDR bp_addr = 0; |
1128 | int bp_size = 0; | |
1129 | int bptoffset = 0; | |
1130 | ||
35df4500 TJB |
1131 | /* bp_location array has BL->OWNER always non-NULL. */ |
1132 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1133 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1134 | bl->owner->number); |
ffce0d52 | 1135 | |
e5dd4106 | 1136 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1137 | content. */ |
1138 | ||
35df4500 TJB |
1139 | if (bl->address >= bp_location_placed_address_before_address_max |
1140 | && memaddr + len <= (bl->address | |
1141 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1142 | break; |
1143 | ||
35df4500 | 1144 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1145 | continue; |
35df4500 | 1146 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1147 | current_program_space->aspace, 0)) |
1148 | continue; | |
1149 | ||
c5aa993b JM |
1150 | /* Addresses and length of the part of the breakpoint that |
1151 | we need to copy. */ | |
35df4500 TJB |
1152 | bp_addr = bl->target_info.placed_address; |
1153 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1154 | |
c5aa993b JM |
1155 | if (bp_addr + bp_size <= memaddr) |
1156 | /* The breakpoint is entirely before the chunk of memory we | |
1157 | are reading. */ | |
1158 | continue; | |
8defab1a | 1159 | |
c5aa993b JM |
1160 | if (bp_addr >= memaddr + len) |
1161 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1162 | reading. */ |
c5aa993b | 1163 | continue; |
c5aa993b | 1164 | |
8defab1a DJ |
1165 | /* Offset within shadow_contents. */ |
1166 | if (bp_addr < memaddr) | |
1167 | { | |
1168 | /* Only copy the second part of the breakpoint. */ | |
1169 | bp_size -= memaddr - bp_addr; | |
1170 | bptoffset = memaddr - bp_addr; | |
1171 | bp_addr = memaddr; | |
1172 | } | |
c5aa993b | 1173 | |
8defab1a DJ |
1174 | if (bp_addr + bp_size > memaddr + len) |
1175 | { | |
1176 | /* Only copy the first part of the breakpoint. */ | |
1177 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1178 | } | |
c5aa993b | 1179 | |
f0ba3972 PA |
1180 | if (readbuf != NULL) |
1181 | { | |
1182 | /* Update the read buffer with this inserted breakpoint's | |
1183 | shadow. */ | |
1184 | memcpy (readbuf + bp_addr - memaddr, | |
1185 | bl->target_info.shadow_contents + bptoffset, bp_size); | |
1186 | } | |
1187 | else | |
1188 | { | |
1189 | struct gdbarch *gdbarch = bl->gdbarch; | |
1190 | const unsigned char *bp; | |
1191 | CORE_ADDR placed_address = bl->target_info.placed_address; | |
1192 | unsigned placed_size = bl->target_info.placed_size; | |
1193 | ||
1194 | /* Update the shadow with what we want to write to memory. */ | |
1195 | memcpy (bl->target_info.shadow_contents + bptoffset, | |
1196 | writebuf_org + bp_addr - memaddr, bp_size); | |
1197 | ||
1198 | /* Determine appropriate breakpoint contents and size for this | |
1199 | address. */ | |
1200 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1201 | ||
1202 | /* Update the final write buffer with this inserted | |
1203 | breakpoint's INSN. */ | |
1204 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1205 | } | |
c5aa993b | 1206 | } |
c906108c | 1207 | } |
c906108c | 1208 | \f |
c5aa993b | 1209 | |
60e1c644 PA |
1210 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1211 | ||
a5606eee | 1212 | static int |
d77f58be | 1213 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1214 | { |
1215 | return (bpt->type == bp_hardware_watchpoint | |
1216 | || bpt->type == bp_read_watchpoint | |
1217 | || bpt->type == bp_access_watchpoint); | |
1218 | } | |
7270d8f2 | 1219 | |
60e1c644 PA |
1220 | /* Return true if BPT is of any watchpoint kind, hardware or |
1221 | software. */ | |
1222 | ||
3a5c3e22 | 1223 | int |
d77f58be | 1224 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1225 | { |
1226 | return (is_hardware_watchpoint (bpt) | |
1227 | || bpt->type == bp_watchpoint); | |
1228 | } | |
1229 | ||
3a5c3e22 PA |
1230 | /* Returns true if the current thread and its running state are safe |
1231 | to evaluate or update watchpoint B. Watchpoints on local | |
1232 | expressions need to be evaluated in the context of the thread that | |
1233 | was current when the watchpoint was created, and, that thread needs | |
1234 | to be stopped to be able to select the correct frame context. | |
1235 | Watchpoints on global expressions can be evaluated on any thread, | |
1236 | and in any state. It is presently left to the target allowing | |
1237 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1238 | |
1239 | static int | |
3a5c3e22 | 1240 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1241 | { |
d0d8b0c6 JK |
1242 | return (b->base.pspace == current_program_space |
1243 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1244 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1245 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1246 | } |
1247 | ||
d0fb5eae JK |
1248 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1249 | associated bp_watchpoint_scope breakpoint. */ | |
1250 | ||
1251 | static void | |
3a5c3e22 | 1252 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1253 | { |
3a5c3e22 | 1254 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1255 | |
1256 | if (b->related_breakpoint != b) | |
1257 | { | |
1258 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1259 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1260 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1261 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1262 | b->related_breakpoint = b; | |
1263 | } | |
1264 | b->disposition = disp_del_at_next_stop; | |
1265 | } | |
1266 | ||
567e1b4e JB |
1267 | /* Assuming that B is a watchpoint: |
1268 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1269 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1270 | - Evaluate the condition if there is one, and store the result |
1271 | in b->loc->cond. | |
a5606eee VP |
1272 | - Update the list of values that must be watched in B->loc. |
1273 | ||
4a64f543 MS |
1274 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1275 | nothing. If this is local watchpoint that is out of scope, delete | |
1276 | it. | |
1277 | ||
1278 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1279 | removed + inserted on each stop here. Normal breakpoints must | |
1280 | never be removed because they might be missed by a running thread | |
1281 | when debugging in non-stop mode. On the other hand, hardware | |
1282 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1283 | to each LWP since they are stored in each LWP's hardware debug | |
1284 | registers. Therefore, such LWP must be stopped first in order to | |
1285 | be able to modify its hardware watchpoints. | |
1286 | ||
1287 | Hardware watchpoints must be reset exactly once after being | |
1288 | presented to the user. It cannot be done sooner, because it would | |
1289 | reset the data used to present the watchpoint hit to the user. And | |
1290 | it must not be done later because it could display the same single | |
1291 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1292 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1293 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1294 | not user-visible - its hit is suppressed if the memory content has | |
1295 | not changed. | |
1296 | ||
1297 | The following constraints influence the location where we can reset | |
1298 | hardware watchpoints: | |
1299 | ||
1300 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1301 | called several times when GDB stops. | |
1302 | ||
1303 | [linux] | |
1304 | * Multiple hardware watchpoints can be hit at the same time, | |
1305 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1306 | hit at a time as the reason for stopping, and all the other hits | |
1307 | are presented later, one after the other, each time the user | |
1308 | requests the execution to be resumed. Execution is not resumed | |
1309 | for the threads still having pending hit event stored in | |
1310 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1311 | the inferior on the first stop the thread hit event is kept being | |
1312 | reported from its cached value by linux_nat_stopped_data_address | |
1313 | until the real thread resume happens after the watchpoint gets | |
1314 | presented and thus its LWP_INFO->STATUS gets reset. | |
1315 | ||
1316 | Therefore the hardware watchpoint hit can get safely reset on the | |
1317 | watchpoint removal from inferior. */ | |
a79d3c27 | 1318 | |
b40ce68a | 1319 | static void |
3a5c3e22 | 1320 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1321 | { |
a5606eee | 1322 | int within_current_scope; |
a5606eee | 1323 | struct frame_id saved_frame_id; |
66076460 | 1324 | int frame_saved; |
a5606eee | 1325 | |
f6bc2008 PA |
1326 | /* If this is a local watchpoint, we only want to check if the |
1327 | watchpoint frame is in scope if the current thread is the thread | |
1328 | that was used to create the watchpoint. */ | |
1329 | if (!watchpoint_in_thread_scope (b)) | |
1330 | return; | |
1331 | ||
3a5c3e22 | 1332 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1333 | return; |
1334 | ||
66076460 | 1335 | frame_saved = 0; |
a5606eee VP |
1336 | |
1337 | /* Determine if the watchpoint is within scope. */ | |
1338 | if (b->exp_valid_block == NULL) | |
1339 | within_current_scope = 1; | |
1340 | else | |
1341 | { | |
b5db5dfc UW |
1342 | struct frame_info *fi = get_current_frame (); |
1343 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1344 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1345 | ||
1346 | /* If we're in a function epilogue, unwinding may not work | |
1347 | properly, so do not attempt to recreate locations at this | |
1348 | point. See similar comments in watchpoint_check. */ | |
1349 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1350 | return; | |
66076460 DJ |
1351 | |
1352 | /* Save the current frame's ID so we can restore it after | |
1353 | evaluating the watchpoint expression on its own frame. */ | |
1354 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1355 | took a frame parameter, so that we didn't have to change the | |
1356 | selected frame. */ | |
1357 | frame_saved = 1; | |
1358 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1359 | ||
a5606eee VP |
1360 | fi = frame_find_by_id (b->watchpoint_frame); |
1361 | within_current_scope = (fi != NULL); | |
1362 | if (within_current_scope) | |
1363 | select_frame (fi); | |
1364 | } | |
1365 | ||
b5db5dfc UW |
1366 | /* We don't free locations. They are stored in the bp_location array |
1367 | and update_global_location_list will eventually delete them and | |
1368 | remove breakpoints if needed. */ | |
3a5c3e22 | 1369 | b->base.loc = NULL; |
b5db5dfc | 1370 | |
a5606eee VP |
1371 | if (within_current_scope && reparse) |
1372 | { | |
1373 | char *s; | |
d63d0675 | 1374 | |
a5606eee VP |
1375 | if (b->exp) |
1376 | { | |
1377 | xfree (b->exp); | |
1378 | b->exp = NULL; | |
1379 | } | |
d63d0675 | 1380 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
a5606eee VP |
1381 | b->exp = parse_exp_1 (&s, b->exp_valid_block, 0); |
1382 | /* If the meaning of expression itself changed, the old value is | |
1383 | no longer relevant. We don't want to report a watchpoint hit | |
1384 | to the user when the old value and the new value may actually | |
1385 | be completely different objects. */ | |
1386 | value_free (b->val); | |
fa4727a6 DJ |
1387 | b->val = NULL; |
1388 | b->val_valid = 0; | |
60e1c644 PA |
1389 | |
1390 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1391 | expression is stored in the breakpoint object, not in the | |
1392 | locations (re)created below. */ | |
3a5c3e22 | 1393 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1394 | { |
1395 | if (b->cond_exp != NULL) | |
1396 | { | |
1397 | xfree (b->cond_exp); | |
1398 | b->cond_exp = NULL; | |
1399 | } | |
1400 | ||
3a5c3e22 | 1401 | s = b->base.cond_string; |
60e1c644 PA |
1402 | b->cond_exp = parse_exp_1 (&s, b->cond_exp_valid_block, 0); |
1403 | } | |
a5606eee | 1404 | } |
a5606eee VP |
1405 | |
1406 | /* If we failed to parse the expression, for example because | |
1407 | it refers to a global variable in a not-yet-loaded shared library, | |
1408 | don't try to insert watchpoint. We don't automatically delete | |
1409 | such watchpoint, though, since failure to parse expression | |
1410 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1411 | if ( !target_has_execution) |
1412 | { | |
1413 | /* Without execution, memory can't change. No use to try and | |
1414 | set watchpoint locations. The watchpoint will be reset when | |
1415 | the target gains execution, through breakpoint_re_set. */ | |
1416 | } | |
1417 | else if (within_current_scope && b->exp) | |
a5606eee | 1418 | { |
0cf6dd15 | 1419 | int pc = 0; |
fa4727a6 | 1420 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1421 | struct program_space *frame_pspace; |
a5606eee | 1422 | |
0cf6dd15 | 1423 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1424 | |
a5606eee VP |
1425 | /* Avoid setting b->val if it's already set. The meaning of |
1426 | b->val is 'the last value' user saw, and we should update | |
1427 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1428 | happens, the code that reports it updates b->val directly. |
1429 | We don't keep track of the memory value for masked | |
1430 | watchpoints. */ | |
3a5c3e22 | 1431 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1432 | { |
1433 | b->val = v; | |
1434 | b->val_valid = 1; | |
1435 | } | |
a5606eee | 1436 | |
2d134ed3 PA |
1437 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1438 | ||
a5606eee | 1439 | /* Look at each value on the value chain. */ |
9fa40276 | 1440 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1441 | { |
1442 | /* If it's a memory location, and GDB actually needed | |
1443 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1444 | must watch it. If the first value returned is |
1445 | still lazy, that means an error occurred reading it; | |
1446 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1447 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1448 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1449 | { |
1450 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1451 | |
a5606eee VP |
1452 | /* We only watch structs and arrays if user asked |
1453 | for it explicitly, never if they just happen to | |
1454 | appear in the middle of some value chain. */ | |
fa4727a6 | 1455 | if (v == result |
a5606eee VP |
1456 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1457 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1458 | { | |
1459 | CORE_ADDR addr; | |
1460 | int len, type; | |
1461 | struct bp_location *loc, **tmp; | |
1462 | ||
42ae5230 | 1463 | addr = value_address (v); |
a5606eee VP |
1464 | len = TYPE_LENGTH (value_type (v)); |
1465 | type = hw_write; | |
3a5c3e22 | 1466 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1467 | type = hw_read; |
3a5c3e22 | 1468 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1469 | type = hw_access; |
3a5c3e22 PA |
1470 | |
1471 | loc = allocate_bp_location (&b->base); | |
1472 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1473 | ; |
1474 | *tmp = loc; | |
a6d9a66e | 1475 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1476 | |
1477 | loc->pspace = frame_pspace; | |
a5606eee VP |
1478 | loc->address = addr; |
1479 | loc->length = len; | |
1480 | loc->watchpoint_type = type; | |
1481 | } | |
1482 | } | |
9fa40276 TJB |
1483 | } |
1484 | ||
1485 | /* Change the type of breakpoint between hardware assisted or | |
1486 | an ordinary watchpoint depending on the hardware support | |
1487 | and free hardware slots. REPARSE is set when the inferior | |
1488 | is started. */ | |
a9634178 | 1489 | if (reparse) |
9fa40276 | 1490 | { |
e09342b5 | 1491 | int reg_cnt; |
9fa40276 TJB |
1492 | enum bp_loc_type loc_type; |
1493 | struct bp_location *bl; | |
a5606eee | 1494 | |
a9634178 | 1495 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1496 | |
1497 | if (reg_cnt) | |
9fa40276 TJB |
1498 | { |
1499 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1500 | enum bptype type; |
9fa40276 | 1501 | |
a9634178 TJB |
1502 | /* Use an exact watchpoint when there's only one memory region to be |
1503 | watched, and only one debug register is needed to watch it. */ | |
1504 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1505 | ||
9fa40276 | 1506 | /* We need to determine how many resources are already |
e09342b5 TJB |
1507 | used for all other hardware watchpoints plus this one |
1508 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1509 | this watchpoint in as well. */ |
1510 | ||
1511 | /* If this is a software watchpoint, we try to turn it | |
1512 | to a hardware one -- count resources as if B was of | |
1513 | hardware watchpoint type. */ | |
1514 | type = b->base.type; | |
1515 | if (type == bp_watchpoint) | |
1516 | type = bp_hardware_watchpoint; | |
1517 | ||
1518 | /* This watchpoint may or may not have been placed on | |
1519 | the list yet at this point (it won't be in the list | |
1520 | if we're trying to create it for the first time, | |
1521 | through watch_command), so always account for it | |
1522 | manually. */ | |
1523 | ||
1524 | /* Count resources used by all watchpoints except B. */ | |
1525 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1526 | ||
1527 | /* Add in the resources needed for B. */ | |
1528 | i += hw_watchpoint_use_count (&b->base); | |
1529 | ||
1530 | target_resources_ok | |
1531 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1532 | if (target_resources_ok <= 0) |
a9634178 | 1533 | { |
3a5c3e22 | 1534 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1535 | |
1536 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1537 | error (_("Target does not support this type of " |
1538 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1539 | else if (target_resources_ok < 0 && !sw_mode) |
1540 | error (_("There are not enough available hardware " | |
1541 | "resources for this watchpoint.")); | |
a1398e0c PA |
1542 | |
1543 | /* Downgrade to software watchpoint. */ | |
1544 | b->base.type = bp_watchpoint; | |
1545 | } | |
1546 | else | |
1547 | { | |
1548 | /* If this was a software watchpoint, we've just | |
1549 | found we have enough resources to turn it to a | |
1550 | hardware watchpoint. Otherwise, this is a | |
1551 | nop. */ | |
1552 | b->base.type = type; | |
a9634178 | 1553 | } |
9fa40276 | 1554 | } |
3a5c3e22 | 1555 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1556 | error (_("Expression cannot be implemented with " |
1557 | "read/access watchpoint.")); | |
9fa40276 | 1558 | else |
3a5c3e22 | 1559 | b->base.type = bp_watchpoint; |
9fa40276 | 1560 | |
3a5c3e22 | 1561 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1562 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1563 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1564 | bl->loc_type = loc_type; |
1565 | } | |
1566 | ||
1567 | for (v = val_chain; v; v = next) | |
1568 | { | |
a5606eee VP |
1569 | next = value_next (v); |
1570 | if (v != b->val) | |
1571 | value_free (v); | |
1572 | } | |
1573 | ||
c7437ca6 PA |
1574 | /* If a software watchpoint is not watching any memory, then the |
1575 | above left it without any location set up. But, | |
1576 | bpstat_stop_status requires a location to be able to report | |
1577 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1578 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1579 | { |
3a5c3e22 PA |
1580 | struct breakpoint *base = &b->base; |
1581 | base->loc = allocate_bp_location (base); | |
1582 | base->loc->pspace = frame_pspace; | |
1583 | base->loc->address = -1; | |
1584 | base->loc->length = -1; | |
1585 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1586 | } |
a5606eee VP |
1587 | } |
1588 | else if (!within_current_scope) | |
7270d8f2 | 1589 | { |
ac74f770 MS |
1590 | printf_filtered (_("\ |
1591 | Watchpoint %d deleted because the program has left the block\n\ | |
1592 | in which its expression is valid.\n"), | |
3a5c3e22 | 1593 | b->base.number); |
d0fb5eae | 1594 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1595 | } |
a5606eee VP |
1596 | |
1597 | /* Restore the selected frame. */ | |
66076460 DJ |
1598 | if (frame_saved) |
1599 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1600 | } |
1601 | ||
a5606eee | 1602 | |
74960c60 | 1603 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1604 | inserted in the inferior. We don't differentiate the type of BL's owner |
1605 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1606 | breakpoint_ops is not defined, because in insert_bp_location, | |
1607 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1608 | static int |
35df4500 | 1609 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1610 | { |
35df4500 | 1611 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1612 | return 0; |
1613 | ||
35df4500 | 1614 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
1615 | return 0; |
1616 | ||
35df4500 | 1617 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
1618 | return 0; |
1619 | ||
f8eba3c6 TT |
1620 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
1621 | return 0; | |
1622 | ||
56710373 PA |
1623 | /* This is set for example, when we're attached to the parent of a |
1624 | vfork, and have detached from the child. The child is running | |
1625 | free, and we expect it to do an exec or exit, at which point the | |
1626 | OS makes the parent schedulable again (and the target reports | |
1627 | that the vfork is done). Until the child is done with the shared | |
1628 | memory region, do not insert breakpoints in the parent, otherwise | |
1629 | the child could still trip on the parent's breakpoints. Since | |
1630 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 1631 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
1632 | return 0; |
1633 | ||
74960c60 VP |
1634 | return 1; |
1635 | } | |
1636 | ||
934709f0 PW |
1637 | /* Same as should_be_inserted but does the check assuming |
1638 | that the location is not duplicated. */ | |
1639 | ||
1640 | static int | |
1641 | unduplicated_should_be_inserted (struct bp_location *bl) | |
1642 | { | |
1643 | int result; | |
1644 | const int save_duplicate = bl->duplicate; | |
1645 | ||
1646 | bl->duplicate = 0; | |
1647 | result = should_be_inserted (bl); | |
1648 | bl->duplicate = save_duplicate; | |
1649 | return result; | |
1650 | } | |
1651 | ||
35df4500 TJB |
1652 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
1653 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 1654 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
1655 | Returns 0 for success, 1 if the bp_location type is not supported or |
1656 | -1 for failure. | |
879bfdc2 | 1657 | |
4a64f543 MS |
1658 | NOTE drow/2003-09-09: This routine could be broken down to an |
1659 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 1660 | static int |
35df4500 | 1661 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 1662 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 1663 | int *disabled_breaks, |
26bb91f3 | 1664 | int *hw_breakpoint_error) |
879bfdc2 DJ |
1665 | { |
1666 | int val = 0; | |
1667 | ||
35df4500 | 1668 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
1669 | return 0; |
1670 | ||
8181d85f | 1671 | /* Initialize the target-specific information. */ |
35df4500 TJB |
1672 | memset (&bl->target_info, 0, sizeof (bl->target_info)); |
1673 | bl->target_info.placed_address = bl->address; | |
1674 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 1675 | bl->target_info.length = bl->length; |
8181d85f | 1676 | |
35df4500 TJB |
1677 | if (bl->loc_type == bp_loc_software_breakpoint |
1678 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 1679 | { |
35df4500 | 1680 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
1681 | { |
1682 | /* If the explicitly specified breakpoint type | |
1683 | is not hardware breakpoint, check the memory map to see | |
1684 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 1685 | |
765dc015 VP |
1686 | Two important cases are: |
1687 | - location type is not hardware breakpoint, memory | |
1688 | is readonly. We change the type of the location to | |
1689 | hardware breakpoint. | |
4a64f543 MS |
1690 | - location type is hardware breakpoint, memory is |
1691 | read-write. This means we've previously made the | |
1692 | location hardware one, but then the memory map changed, | |
1693 | so we undo. | |
765dc015 | 1694 | |
4a64f543 MS |
1695 | When breakpoints are removed, remove_breakpoints will use |
1696 | location types we've just set here, the only possible | |
1697 | problem is that memory map has changed during running | |
1698 | program, but it's not going to work anyway with current | |
1699 | gdb. */ | |
765dc015 | 1700 | struct mem_region *mr |
35df4500 | 1701 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
1702 | |
1703 | if (mr) | |
1704 | { | |
1705 | if (automatic_hardware_breakpoints) | |
1706 | { | |
765dc015 VP |
1707 | enum bp_loc_type new_type; |
1708 | ||
1709 | if (mr->attrib.mode != MEM_RW) | |
1710 | new_type = bp_loc_hardware_breakpoint; | |
1711 | else | |
1712 | new_type = bp_loc_software_breakpoint; | |
1713 | ||
35df4500 | 1714 | if (new_type != bl->loc_type) |
765dc015 VP |
1715 | { |
1716 | static int said = 0; | |
cc59ec59 | 1717 | |
35df4500 | 1718 | bl->loc_type = new_type; |
765dc015 VP |
1719 | if (!said) |
1720 | { | |
3e43a32a MS |
1721 | fprintf_filtered (gdb_stdout, |
1722 | _("Note: automatically using " | |
1723 | "hardware breakpoints for " | |
1724 | "read-only addresses.\n")); | |
765dc015 VP |
1725 | said = 1; |
1726 | } | |
1727 | } | |
1728 | } | |
35df4500 | 1729 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 1730 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
1731 | warning (_("cannot set software breakpoint " |
1732 | "at readonly address %s"), | |
35df4500 | 1733 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
1734 | } |
1735 | } | |
1736 | ||
879bfdc2 DJ |
1737 | /* First check to see if we have to handle an overlay. */ |
1738 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
1739 | || bl->section == NULL |
1740 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
1741 | { |
1742 | /* No overlay handling: just set the breakpoint. */ | |
1743 | ||
348d480f | 1744 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
1745 | } |
1746 | else | |
1747 | { | |
4a64f543 | 1748 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
1749 | Shall we set a breakpoint at the LMA? */ |
1750 | if (!overlay_events_enabled) | |
1751 | { | |
1752 | /* Yes -- overlay event support is not active, | |
1753 | so we must try to set a breakpoint at the LMA. | |
1754 | This will not work for a hardware breakpoint. */ | |
35df4500 | 1755 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 1756 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 1757 | bl->owner->number); |
879bfdc2 DJ |
1758 | else |
1759 | { | |
35df4500 TJB |
1760 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
1761 | bl->section); | |
879bfdc2 | 1762 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
1763 | bl->overlay_target_info = bl->target_info; |
1764 | bl->overlay_target_info.placed_address = addr; | |
1765 | val = target_insert_breakpoint (bl->gdbarch, | |
1766 | &bl->overlay_target_info); | |
879bfdc2 | 1767 | if (val != 0) |
99361f52 | 1768 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
1769 | "Overlay breakpoint %d " |
1770 | "failed: in ROM?\n", | |
35df4500 | 1771 | bl->owner->number); |
879bfdc2 DJ |
1772 | } |
1773 | } | |
1774 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 1775 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
1776 | { |
1777 | /* Yes. This overlay section is mapped into memory. */ | |
348d480f | 1778 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
1779 | } |
1780 | else | |
1781 | { | |
1782 | /* No. This breakpoint will not be inserted. | |
1783 | No error, but do not mark the bp as 'inserted'. */ | |
1784 | return 0; | |
1785 | } | |
1786 | } | |
1787 | ||
1788 | if (val) | |
1789 | { | |
1790 | /* Can't set the breakpoint. */ | |
35df4500 | 1791 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 1792 | { |
4a64f543 | 1793 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 1794 | val = 0; |
35df4500 | 1795 | bl->shlib_disabled = 1; |
8d3788bd | 1796 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
1797 | if (!*disabled_breaks) |
1798 | { | |
1799 | fprintf_unfiltered (tmp_error_stream, | |
1800 | "Cannot insert breakpoint %d.\n", | |
1801 | bl->owner->number); | |
1802 | fprintf_unfiltered (tmp_error_stream, | |
1803 | "Temporarily disabling shared " | |
1804 | "library breakpoints:\n"); | |
1805 | } | |
1806 | *disabled_breaks = 1; | |
879bfdc2 | 1807 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 1808 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
1809 | } |
1810 | else | |
879bfdc2 | 1811 | { |
35df4500 | 1812 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
1813 | { |
1814 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
1815 | fprintf_unfiltered (tmp_error_stream, |
1816 | "Cannot insert hardware " | |
1817 | "breakpoint %d.\n", | |
35df4500 | 1818 | bl->owner->number); |
879bfdc2 DJ |
1819 | } |
1820 | else | |
1821 | { | |
1822 | fprintf_unfiltered (tmp_error_stream, | |
1823 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 1824 | bl->owner->number); |
879bfdc2 DJ |
1825 | fprintf_filtered (tmp_error_stream, |
1826 | "Error accessing memory address "); | |
35df4500 | 1827 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 1828 | tmp_error_stream); |
879bfdc2 DJ |
1829 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
1830 | safe_strerror (val)); | |
1831 | } | |
1832 | ||
1833 | } | |
1834 | } | |
1835 | else | |
35df4500 | 1836 | bl->inserted = 1; |
879bfdc2 DJ |
1837 | |
1838 | return val; | |
1839 | } | |
1840 | ||
35df4500 | 1841 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 1842 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 1843 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 1844 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 1845 | { |
77b06cd7 TJB |
1846 | gdb_assert (bl->owner->ops != NULL |
1847 | && bl->owner->ops->insert_location != NULL); | |
1848 | ||
1849 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
1850 | |
1851 | /* If trying to set a read-watchpoint, and it turns out it's not | |
1852 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 1853 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
1854 | { |
1855 | struct bp_location *loc, **loc_temp; | |
1856 | ||
1857 | /* But don't try to insert it, if there's already another | |
1858 | hw_access location that would be considered a duplicate | |
1859 | of this one. */ | |
1860 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 1861 | if (loc != bl |
85d721b8 | 1862 | && loc->watchpoint_type == hw_access |
35df4500 | 1863 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 1864 | { |
35df4500 TJB |
1865 | bl->duplicate = 1; |
1866 | bl->inserted = 1; | |
1867 | bl->target_info = loc->target_info; | |
1868 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
1869 | val = 0; |
1870 | break; | |
1871 | } | |
1872 | ||
1873 | if (val == 1) | |
1874 | { | |
77b06cd7 TJB |
1875 | bl->watchpoint_type = hw_access; |
1876 | val = bl->owner->ops->insert_location (bl); | |
1877 | ||
1878 | if (val) | |
1879 | /* Back to the original value. */ | |
1880 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
1881 | } |
1882 | } | |
1883 | ||
35df4500 | 1884 | bl->inserted = (val == 0); |
879bfdc2 DJ |
1885 | } |
1886 | ||
35df4500 | 1887 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 1888 | { |
77b06cd7 TJB |
1889 | gdb_assert (bl->owner->ops != NULL |
1890 | && bl->owner->ops->insert_location != NULL); | |
1891 | ||
1892 | val = bl->owner->ops->insert_location (bl); | |
1893 | if (val) | |
1894 | { | |
1895 | bl->owner->enable_state = bp_disabled; | |
1896 | ||
1897 | if (val == 1) | |
1898 | warning (_("\ | |
1899 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
1900 | of catchpoint."), bl->owner->number); | |
1901 | else | |
1902 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
1903 | } | |
1904 | ||
1905 | bl->inserted = (val == 0); | |
1640b821 DJ |
1906 | |
1907 | /* We've already printed an error message if there was a problem | |
1908 | inserting this catchpoint, and we've disabled the catchpoint, | |
1909 | so just return success. */ | |
1910 | return 0; | |
879bfdc2 DJ |
1911 | } |
1912 | ||
1913 | return 0; | |
1914 | } | |
1915 | ||
6c95b8df PA |
1916 | /* This function is called when program space PSPACE is about to be |
1917 | deleted. It takes care of updating breakpoints to not reference | |
1918 | PSPACE anymore. */ | |
1919 | ||
1920 | void | |
1921 | breakpoint_program_space_exit (struct program_space *pspace) | |
1922 | { | |
1923 | struct breakpoint *b, *b_temp; | |
876fa593 | 1924 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
1925 | |
1926 | /* Remove any breakpoint that was set through this program space. */ | |
1927 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
1928 | { | |
1929 | if (b->pspace == pspace) | |
1930 | delete_breakpoint (b); | |
1931 | } | |
1932 | ||
1933 | /* Breakpoints set through other program spaces could have locations | |
1934 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 1935 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
1936 | { |
1937 | struct bp_location *tmp; | |
1938 | ||
1939 | if (loc->pspace == pspace) | |
1940 | { | |
2bdf28a0 | 1941 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
1942 | if (loc->owner->loc == loc) |
1943 | loc->owner->loc = loc->next; | |
1944 | else | |
1945 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
1946 | if (tmp->next == loc) | |
1947 | { | |
1948 | tmp->next = loc->next; | |
1949 | break; | |
1950 | } | |
1951 | } | |
1952 | } | |
1953 | ||
1954 | /* Now update the global location list to permanently delete the | |
1955 | removed locations above. */ | |
1956 | update_global_location_list (0); | |
1957 | } | |
1958 | ||
74960c60 VP |
1959 | /* Make sure all breakpoints are inserted in inferior. |
1960 | Throws exception on any error. | |
1961 | A breakpoint that is already inserted won't be inserted | |
1962 | again, so calling this function twice is safe. */ | |
1963 | void | |
1964 | insert_breakpoints (void) | |
1965 | { | |
1966 | struct breakpoint *bpt; | |
1967 | ||
1968 | ALL_BREAKPOINTS (bpt) | |
1969 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
1970 | { |
1971 | struct watchpoint *w = (struct watchpoint *) bpt; | |
1972 | ||
1973 | update_watchpoint (w, 0 /* don't reparse. */); | |
1974 | } | |
74960c60 | 1975 | |
b60e7edf | 1976 | update_global_location_list (1); |
74960c60 | 1977 | |
c35b1492 PA |
1978 | /* update_global_location_list does not insert breakpoints when |
1979 | always_inserted_mode is not enabled. Explicitly insert them | |
1980 | now. */ | |
1981 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
1982 | insert_breakpoint_locations (); |
1983 | } | |
1984 | ||
c30eee59 | 1985 | /* Used when starting or continuing the program. */ |
c906108c | 1986 | |
74960c60 VP |
1987 | static void |
1988 | insert_breakpoint_locations (void) | |
c906108c | 1989 | { |
a5606eee | 1990 | struct breakpoint *bpt; |
35df4500 | 1991 | struct bp_location *bl, **blp_tmp; |
eacd795a | 1992 | int error_flag = 0; |
c906108c | 1993 | int val = 0; |
3fbb6ffa | 1994 | int disabled_breaks = 0; |
81d0cc19 | 1995 | int hw_breakpoint_error = 0; |
c906108c | 1996 | |
81d0cc19 | 1997 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 1998 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 1999 | |
81d0cc19 GS |
2000 | /* Explicitly mark the warning -- this will only be printed if |
2001 | there was an error. */ | |
2002 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
2003 | |
2004 | save_current_space_and_thread (); | |
2005 | ||
35df4500 | 2006 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2007 | { |
35df4500 | 2008 | if (!should_be_inserted (bl) || bl->inserted) |
879bfdc2 DJ |
2009 | continue; |
2010 | ||
4a64f543 MS |
2011 | /* There is no point inserting thread-specific breakpoints if |
2012 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2013 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
2014 | if (bl->owner->thread != -1 |
2015 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2016 | continue; |
2017 | ||
35df4500 | 2018 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2019 | |
2020 | /* For targets that support global breakpoints, there's no need | |
2021 | to select an inferior to insert breakpoint to. In fact, even | |
2022 | if we aren't attached to any process yet, we should still | |
2023 | insert breakpoints. */ | |
2024 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2025 | && ptid_equal (inferior_ptid, null_ptid)) | |
2026 | continue; | |
2027 | ||
3fbb6ffa TJB |
2028 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
2029 | &hw_breakpoint_error); | |
879bfdc2 | 2030 | if (val) |
eacd795a | 2031 | error_flag = val; |
879bfdc2 | 2032 | } |
c906108c | 2033 | |
4a64f543 MS |
2034 | /* If we failed to insert all locations of a watchpoint, remove |
2035 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2036 | ALL_BREAKPOINTS (bpt) |
2037 | { | |
2038 | int some_failed = 0; | |
2039 | struct bp_location *loc; | |
2040 | ||
2041 | if (!is_hardware_watchpoint (bpt)) | |
2042 | continue; | |
2043 | ||
d6b74ac4 | 2044 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2045 | continue; |
74960c60 VP |
2046 | |
2047 | if (bpt->disposition == disp_del_at_next_stop) | |
2048 | continue; | |
a5606eee VP |
2049 | |
2050 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2051 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2052 | { |
2053 | some_failed = 1; | |
2054 | break; | |
2055 | } | |
2056 | if (some_failed) | |
2057 | { | |
2058 | for (loc = bpt->loc; loc; loc = loc->next) | |
2059 | if (loc->inserted) | |
2060 | remove_breakpoint (loc, mark_uninserted); | |
2061 | ||
2062 | hw_breakpoint_error = 1; | |
2063 | fprintf_unfiltered (tmp_error_stream, | |
2064 | "Could not insert hardware watchpoint %d.\n", | |
2065 | bpt->number); | |
eacd795a | 2066 | error_flag = -1; |
a5606eee VP |
2067 | } |
2068 | } | |
2069 | ||
eacd795a | 2070 | if (error_flag) |
81d0cc19 GS |
2071 | { |
2072 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2073 | message about possibly exhausted resources. */ | |
879bfdc2 | 2074 | if (hw_breakpoint_error) |
81d0cc19 | 2075 | { |
c6510018 MS |
2076 | fprintf_unfiltered (tmp_error_stream, |
2077 | "Could not insert hardware breakpoints:\n\ | |
2078 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2079 | } |
81d0cc19 GS |
2080 | target_terminal_ours_for_output (); |
2081 | error_stream (tmp_error_stream); | |
2082 | } | |
f7545552 TT |
2083 | |
2084 | do_cleanups (cleanups); | |
c906108c SS |
2085 | } |
2086 | ||
c30eee59 TJB |
2087 | /* Used when the program stops. |
2088 | Returns zero if successful, or non-zero if there was a problem | |
2089 | removing a breakpoint location. */ | |
2090 | ||
c906108c | 2091 | int |
fba45db2 | 2092 | remove_breakpoints (void) |
c906108c | 2093 | { |
35df4500 | 2094 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2095 | int val = 0; |
c906108c | 2096 | |
35df4500 | 2097 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2098 | { |
1e4d1764 | 2099 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2100 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2101 | } |
3a1bae8e | 2102 | return val; |
c906108c SS |
2103 | } |
2104 | ||
6c95b8df PA |
2105 | /* Remove breakpoints of process PID. */ |
2106 | ||
2107 | int | |
2108 | remove_breakpoints_pid (int pid) | |
2109 | { | |
35df4500 | 2110 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2111 | int val; |
2112 | struct inferior *inf = find_inferior_pid (pid); | |
2113 | ||
35df4500 | 2114 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2115 | { |
35df4500 | 2116 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2117 | continue; |
2118 | ||
35df4500 | 2119 | if (bl->inserted) |
6c95b8df | 2120 | { |
35df4500 | 2121 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2122 | if (val != 0) |
2123 | return val; | |
2124 | } | |
2125 | } | |
2126 | return 0; | |
2127 | } | |
2128 | ||
c906108c | 2129 | int |
fba45db2 | 2130 | reattach_breakpoints (int pid) |
c906108c | 2131 | { |
6c95b8df | 2132 | struct cleanup *old_chain; |
35df4500 | 2133 | struct bp_location *bl, **blp_tmp; |
c906108c | 2134 | int val; |
86b887df | 2135 | struct ui_file *tmp_error_stream; |
3fbb6ffa | 2136 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2137 | struct inferior *inf; |
2138 | struct thread_info *tp; | |
2139 | ||
2140 | tp = any_live_thread_of_process (pid); | |
2141 | if (tp == NULL) | |
2142 | return 1; | |
2143 | ||
2144 | inf = find_inferior_pid (pid); | |
2145 | old_chain = save_inferior_ptid (); | |
2146 | ||
2147 | inferior_ptid = tp->ptid; | |
a4954f26 | 2148 | |
86b887df | 2149 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2150 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2151 | |
35df4500 | 2152 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2153 | { |
35df4500 | 2154 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2155 | continue; |
2156 | ||
35df4500 | 2157 | if (bl->inserted) |
c5aa993b | 2158 | { |
35df4500 | 2159 | bl->inserted = 0; |
3fbb6ffa | 2160 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); |
c5aa993b JM |
2161 | if (val != 0) |
2162 | { | |
ce696e05 | 2163 | do_cleanups (old_chain); |
c5aa993b JM |
2164 | return val; |
2165 | } | |
2166 | } | |
2167 | } | |
ce696e05 | 2168 | do_cleanups (old_chain); |
c906108c SS |
2169 | return 0; |
2170 | } | |
2171 | ||
e58b0e63 PA |
2172 | static int internal_breakpoint_number = -1; |
2173 | ||
84f4c1fe PM |
2174 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2175 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2176 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 2177 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
2178 | breakpoint_count and that value incremented. Internal breakpoints |
2179 | do not set the internal var bpnum. */ | |
2180 | static void | |
2181 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2182 | { | |
2183 | if (internal) | |
2184 | b->number = internal_breakpoint_number--; | |
2185 | else | |
2186 | { | |
2187 | set_breakpoint_count (breakpoint_count + 1); | |
2188 | b->number = breakpoint_count; | |
2189 | } | |
2190 | } | |
2191 | ||
e62c965a | 2192 | static struct breakpoint * |
a6d9a66e | 2193 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 2194 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 2195 | const struct breakpoint_ops *ops) |
e62c965a | 2196 | { |
e62c965a PP |
2197 | struct symtab_and_line sal; |
2198 | struct breakpoint *b; | |
2199 | ||
4a64f543 | 2200 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
2201 | |
2202 | sal.pc = address; | |
2203 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 2204 | sal.pspace = current_program_space; |
e62c965a | 2205 | |
06edf0c0 | 2206 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
2207 | b->number = internal_breakpoint_number--; |
2208 | b->disposition = disp_donttouch; | |
2209 | ||
2210 | return b; | |
2211 | } | |
2212 | ||
17450429 PP |
2213 | static const char *const longjmp_names[] = |
2214 | { | |
2215 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
2216 | }; | |
2217 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
2218 | ||
2219 | /* Per-objfile data private to breakpoint.c. */ | |
2220 | struct breakpoint_objfile_data | |
2221 | { | |
2222 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
2223 | struct minimal_symbol *overlay_msym; | |
2224 | ||
2225 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
2226 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
2227 | ||
2228 | /* Minimal symbol for "std::terminate()" (if any). */ | |
2229 | struct minimal_symbol *terminate_msym; | |
2230 | ||
2231 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
2232 | struct minimal_symbol *exception_msym; | |
2233 | }; | |
2234 | ||
2235 | static const struct objfile_data *breakpoint_objfile_key; | |
2236 | ||
2237 | /* Minimal symbol not found sentinel. */ | |
2238 | static struct minimal_symbol msym_not_found; | |
2239 | ||
2240 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
2241 | ||
2242 | static int | |
2243 | msym_not_found_p (const struct minimal_symbol *msym) | |
2244 | { | |
2245 | return msym == &msym_not_found; | |
2246 | } | |
2247 | ||
2248 | /* Return per-objfile data needed by breakpoint.c. | |
2249 | Allocate the data if necessary. */ | |
2250 | ||
2251 | static struct breakpoint_objfile_data * | |
2252 | get_breakpoint_objfile_data (struct objfile *objfile) | |
2253 | { | |
2254 | struct breakpoint_objfile_data *bp_objfile_data; | |
2255 | ||
2256 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
2257 | if (bp_objfile_data == NULL) | |
2258 | { | |
2259 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
2260 | sizeof (*bp_objfile_data)); | |
2261 | ||
2262 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
2263 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
2264 | } | |
2265 | return bp_objfile_data; | |
2266 | } | |
2267 | ||
e62c965a | 2268 | static void |
af02033e | 2269 | create_overlay_event_breakpoint (void) |
e62c965a | 2270 | { |
69de3c6a | 2271 | struct objfile *objfile; |
af02033e | 2272 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 2273 | |
69de3c6a PP |
2274 | ALL_OBJFILES (objfile) |
2275 | { | |
2276 | struct breakpoint *b; | |
17450429 PP |
2277 | struct breakpoint_objfile_data *bp_objfile_data; |
2278 | CORE_ADDR addr; | |
69de3c6a | 2279 | |
17450429 PP |
2280 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2281 | ||
2282 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
2283 | continue; | |
2284 | ||
2285 | if (bp_objfile_data->overlay_msym == NULL) | |
2286 | { | |
2287 | struct minimal_symbol *m; | |
2288 | ||
2289 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2290 | if (m == NULL) | |
2291 | { | |
2292 | /* Avoid future lookups in this objfile. */ | |
2293 | bp_objfile_data->overlay_msym = &msym_not_found; | |
2294 | continue; | |
2295 | } | |
2296 | bp_objfile_data->overlay_msym = m; | |
2297 | } | |
e62c965a | 2298 | |
17450429 PP |
2299 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
2300 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2301 | bp_overlay_event, |
2302 | &internal_breakpoint_ops); | |
69de3c6a | 2303 | b->addr_string = xstrdup (func_name); |
e62c965a | 2304 | |
69de3c6a PP |
2305 | if (overlay_debugging == ovly_auto) |
2306 | { | |
2307 | b->enable_state = bp_enabled; | |
2308 | overlay_events_enabled = 1; | |
2309 | } | |
2310 | else | |
2311 | { | |
2312 | b->enable_state = bp_disabled; | |
2313 | overlay_events_enabled = 0; | |
2314 | } | |
e62c965a PP |
2315 | } |
2316 | update_global_location_list (1); | |
2317 | } | |
2318 | ||
0fd8e87f | 2319 | static void |
af02033e | 2320 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 2321 | { |
6c95b8df | 2322 | struct program_space *pspace; |
6c95b8df PA |
2323 | struct cleanup *old_chain; |
2324 | ||
2325 | old_chain = save_current_program_space (); | |
0fd8e87f | 2326 | |
6c95b8df | 2327 | ALL_PSPACES (pspace) |
af02033e PP |
2328 | { |
2329 | struct objfile *objfile; | |
2330 | ||
2331 | set_current_program_space (pspace); | |
2332 | ||
2333 | ALL_OBJFILES (objfile) | |
0fd8e87f | 2334 | { |
af02033e PP |
2335 | int i; |
2336 | struct gdbarch *gdbarch; | |
17450429 | 2337 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 2338 | |
af02033e PP |
2339 | gdbarch = get_objfile_arch (objfile); |
2340 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
2341 | continue; |
2342 | ||
17450429 PP |
2343 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
2344 | ||
2345 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) | |
af02033e PP |
2346 | { |
2347 | struct breakpoint *b; | |
af02033e | 2348 | const char *func_name; |
17450429 | 2349 | CORE_ADDR addr; |
6c95b8df | 2350 | |
17450429 | 2351 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 2352 | continue; |
0fd8e87f | 2353 | |
17450429 PP |
2354 | func_name = longjmp_names[i]; |
2355 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
2356 | { | |
2357 | struct minimal_symbol *m; | |
2358 | ||
2359 | m = lookup_minimal_symbol_text (func_name, objfile); | |
2360 | if (m == NULL) | |
2361 | { | |
2362 | /* Prevent future lookups in this objfile. */ | |
2363 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
2364 | continue; | |
2365 | } | |
2366 | bp_objfile_data->longjmp_msym[i] = m; | |
2367 | } | |
2368 | ||
2369 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
2370 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
2371 | &internal_breakpoint_ops); | |
af02033e PP |
2372 | b->addr_string = xstrdup (func_name); |
2373 | b->enable_state = bp_disabled; | |
2374 | } | |
0fd8e87f | 2375 | } |
af02033e | 2376 | } |
0fd8e87f | 2377 | update_global_location_list (1); |
6c95b8df PA |
2378 | |
2379 | do_cleanups (old_chain); | |
0fd8e87f UW |
2380 | } |
2381 | ||
af02033e | 2382 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 2383 | static void |
af02033e | 2384 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
2385 | { |
2386 | struct program_space *pspace; | |
aa7d318d | 2387 | struct cleanup *old_chain; |
af02033e | 2388 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
2389 | |
2390 | old_chain = save_current_program_space (); | |
2391 | ||
2392 | ALL_PSPACES (pspace) | |
17450429 PP |
2393 | { |
2394 | struct objfile *objfile; | |
2395 | CORE_ADDR addr; | |
2396 | ||
2397 | set_current_program_space (pspace); | |
2398 | ||
aa7d318d TT |
2399 | ALL_OBJFILES (objfile) |
2400 | { | |
2401 | struct breakpoint *b; | |
17450429 | 2402 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 2403 | |
17450429 | 2404 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 2405 | |
17450429 PP |
2406 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
2407 | continue; | |
2408 | ||
2409 | if (bp_objfile_data->terminate_msym == NULL) | |
2410 | { | |
2411 | struct minimal_symbol *m; | |
2412 | ||
2413 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
2414 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
2415 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
2416 | { | |
2417 | /* Prevent future lookups in this objfile. */ | |
2418 | bp_objfile_data->terminate_msym = &msym_not_found; | |
2419 | continue; | |
2420 | } | |
2421 | bp_objfile_data->terminate_msym = m; | |
2422 | } | |
aa7d318d | 2423 | |
17450429 PP |
2424 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
2425 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
2426 | bp_std_terminate_master, |
2427 | &internal_breakpoint_ops); | |
aa7d318d TT |
2428 | b->addr_string = xstrdup (func_name); |
2429 | b->enable_state = bp_disabled; | |
2430 | } | |
17450429 PP |
2431 | } |
2432 | ||
aa7d318d TT |
2433 | update_global_location_list (1); |
2434 | ||
2435 | do_cleanups (old_chain); | |
2436 | } | |
2437 | ||
186c406b TT |
2438 | /* Install a master breakpoint on the unwinder's debug hook. */ |
2439 | ||
2440 | void | |
2441 | create_exception_master_breakpoint (void) | |
2442 | { | |
2443 | struct objfile *objfile; | |
17450429 | 2444 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
2445 | |
2446 | ALL_OBJFILES (objfile) | |
2447 | { | |
17450429 PP |
2448 | struct breakpoint *b; |
2449 | struct gdbarch *gdbarch; | |
2450 | struct breakpoint_objfile_data *bp_objfile_data; | |
2451 | CORE_ADDR addr; | |
2452 | ||
2453 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
2454 | ||
2455 | if (msym_not_found_p (bp_objfile_data->exception_msym)) | |
2456 | continue; | |
2457 | ||
2458 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 2459 | |
17450429 | 2460 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 2461 | { |
17450429 | 2462 | struct minimal_symbol *debug_hook; |
186c406b | 2463 | |
17450429 PP |
2464 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
2465 | if (debug_hook == NULL) | |
2466 | { | |
2467 | bp_objfile_data->exception_msym = &msym_not_found; | |
2468 | continue; | |
2469 | } | |
2470 | ||
2471 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 2472 | } |
17450429 PP |
2473 | |
2474 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
2475 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
2476 | ¤t_target); | |
06edf0c0 PA |
2477 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
2478 | &internal_breakpoint_ops); | |
17450429 PP |
2479 | b->addr_string = xstrdup (func_name); |
2480 | b->enable_state = bp_disabled; | |
186c406b TT |
2481 | } |
2482 | ||
2483 | update_global_location_list (1); | |
2484 | } | |
2485 | ||
c906108c | 2486 | void |
fba45db2 | 2487 | update_breakpoints_after_exec (void) |
c906108c | 2488 | { |
35df4500 | 2489 | struct breakpoint *b, *b_tmp; |
876fa593 | 2490 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 2491 | |
25b22b0a PA |
2492 | /* We're about to delete breakpoints from GDB's lists. If the |
2493 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
2494 | writing the breakpoints' "shadow contents" back into memory. The | |
2495 | "shadow contents" are NOT valid after an exec, so GDB should not | |
2496 | do that. Instead, the target is responsible from marking | |
2497 | breakpoints out as soon as it detects an exec. We don't do that | |
2498 | here instead, because there may be other attempts to delete | |
2499 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 2500 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
2501 | if (bploc->pspace == current_program_space) |
2502 | gdb_assert (!bploc->inserted); | |
c906108c | 2503 | |
35df4500 | 2504 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2505 | { |
6c95b8df PA |
2506 | if (b->pspace != current_program_space) |
2507 | continue; | |
2508 | ||
4a64f543 | 2509 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
2510 | if (b->type == bp_shlib_event) |
2511 | { | |
2512 | delete_breakpoint (b); | |
2513 | continue; | |
2514 | } | |
c906108c | 2515 | |
4a64f543 | 2516 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
2517 | if (b->type == bp_jit_event) |
2518 | { | |
2519 | delete_breakpoint (b); | |
2520 | continue; | |
2521 | } | |
2522 | ||
1900040c | 2523 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
2524 | as must overlay event and longjmp master breakpoints. */ |
2525 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
2526 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
2527 | || b->type == bp_exception_master) | |
c4093a6a JM |
2528 | { |
2529 | delete_breakpoint (b); | |
2530 | continue; | |
2531 | } | |
2532 | ||
4a64f543 | 2533 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 2534 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
2535 | { |
2536 | delete_breakpoint (b); | |
2537 | continue; | |
2538 | } | |
2539 | ||
611c83ae PA |
2540 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
2541 | after an exec. */ | |
186c406b TT |
2542 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
2543 | || b->type == bp_exception || b->type == bp_exception_resume) | |
611c83ae PA |
2544 | { |
2545 | delete_breakpoint (b); | |
2546 | continue; | |
2547 | } | |
2548 | ||
ce78b96d JB |
2549 | if (b->type == bp_catchpoint) |
2550 | { | |
2551 | /* For now, none of the bp_catchpoint breakpoints need to | |
2552 | do anything at this point. In the future, if some of | |
2553 | the catchpoints need to something, we will need to add | |
2554 | a new method, and call this method from here. */ | |
2555 | continue; | |
2556 | } | |
2557 | ||
c5aa993b JM |
2558 | /* bp_finish is a special case. The only way we ought to be able |
2559 | to see one of these when an exec() has happened, is if the user | |
2560 | caught a vfork, and then said "finish". Ordinarily a finish just | |
2561 | carries them to the call-site of the current callee, by setting | |
2562 | a temporary bp there and resuming. But in this case, the finish | |
2563 | will carry them entirely through the vfork & exec. | |
2564 | ||
2565 | We don't want to allow a bp_finish to remain inserted now. But | |
2566 | we can't safely delete it, 'cause finish_command has a handle to | |
2567 | the bp on a bpstat, and will later want to delete it. There's a | |
2568 | chance (and I've seen it happen) that if we delete the bp_finish | |
2569 | here, that its storage will get reused by the time finish_command | |
2570 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
2571 | We really must allow finish_command to delete a bp_finish. | |
2572 | ||
e5dd4106 | 2573 | In the absence of a general solution for the "how do we know |
53a5351d JM |
2574 | it's safe to delete something others may have handles to?" |
2575 | problem, what we'll do here is just uninsert the bp_finish, and | |
2576 | let finish_command delete it. | |
2577 | ||
2578 | (We know the bp_finish is "doomed" in the sense that it's | |
2579 | momentary, and will be deleted as soon as finish_command sees | |
2580 | the inferior stopped. So it doesn't matter that the bp's | |
2581 | address is probably bogus in the new a.out, unlike e.g., the | |
2582 | solib breakpoints.) */ | |
c5aa993b | 2583 | |
c5aa993b JM |
2584 | if (b->type == bp_finish) |
2585 | { | |
2586 | continue; | |
2587 | } | |
2588 | ||
2589 | /* Without a symbolic address, we have little hope of the | |
2590 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 2591 | a.out. */ |
c5aa993b JM |
2592 | if (b->addr_string == NULL) |
2593 | { | |
2594 | delete_breakpoint (b); | |
2595 | continue; | |
2596 | } | |
c5aa993b | 2597 | } |
1900040c | 2598 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
2599 | create_overlay_event_breakpoint (); |
2600 | create_longjmp_master_breakpoint (); | |
2601 | create_std_terminate_master_breakpoint (); | |
186c406b | 2602 | create_exception_master_breakpoint (); |
c906108c SS |
2603 | } |
2604 | ||
2605 | int | |
fba45db2 | 2606 | detach_breakpoints (int pid) |
c906108c | 2607 | { |
35df4500 | 2608 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2609 | int val = 0; |
ce696e05 | 2610 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 2611 | struct inferior *inf = current_inferior (); |
c5aa993b | 2612 | |
39f77062 | 2613 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 2614 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 2615 | |
6c95b8df | 2616 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 2617 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 2618 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2619 | { |
35df4500 | 2620 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2621 | continue; |
2622 | ||
35df4500 TJB |
2623 | if (bl->inserted) |
2624 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 2625 | } |
d03285ec UW |
2626 | |
2627 | /* Detach single-step breakpoints as well. */ | |
2628 | detach_single_step_breakpoints (); | |
2629 | ||
ce696e05 | 2630 | do_cleanups (old_chain); |
3a1bae8e | 2631 | return val; |
c906108c SS |
2632 | } |
2633 | ||
35df4500 | 2634 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
2635 | Note that this is used to detach breakpoints from a child fork. |
2636 | When we get here, the child isn't in the inferior list, and neither | |
2637 | do we have objects to represent its address space --- we should | |
35df4500 | 2638 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 2639 | |
c906108c | 2640 | static int |
35df4500 | 2641 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
2642 | { |
2643 | int val; | |
c5aa993b | 2644 | |
35df4500 TJB |
2645 | /* BL is never in moribund_locations by our callers. */ |
2646 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2647 | |
35df4500 | 2648 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
2649 | /* Permanent breakpoints cannot be inserted or removed. */ |
2650 | return 0; | |
2651 | ||
74960c60 VP |
2652 | /* The type of none suggests that owner is actually deleted. |
2653 | This should not ever happen. */ | |
35df4500 | 2654 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 2655 | |
35df4500 TJB |
2656 | if (bl->loc_type == bp_loc_software_breakpoint |
2657 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 2658 | { |
c02f5703 MS |
2659 | /* "Normal" instruction breakpoint: either the standard |
2660 | trap-instruction bp (bp_breakpoint), or a | |
2661 | bp_hardware_breakpoint. */ | |
2662 | ||
2663 | /* First check to see if we have to handle an overlay. */ | |
2664 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2665 | || bl->section == NULL |
2666 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
2667 | { |
2668 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 2669 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 2670 | } |
c906108c SS |
2671 | else |
2672 | { | |
4a64f543 | 2673 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
2674 | Did we set a breakpoint at the LMA? */ |
2675 | if (!overlay_events_enabled) | |
2676 | { | |
2677 | /* Yes -- overlay event support is not active, so we | |
2678 | should have set a breakpoint at the LMA. Remove it. | |
2679 | */ | |
c02f5703 MS |
2680 | /* Ignore any failures: if the LMA is in ROM, we will |
2681 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
2682 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
2683 | target_remove_hw_breakpoint (bl->gdbarch, | |
2684 | &bl->overlay_target_info); | |
c02f5703 | 2685 | else |
35df4500 TJB |
2686 | target_remove_breakpoint (bl->gdbarch, |
2687 | &bl->overlay_target_info); | |
c02f5703 MS |
2688 | } |
2689 | /* Did we set a breakpoint at the VMA? | |
2690 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 2691 | if (bl->inserted) |
c906108c | 2692 | { |
c02f5703 MS |
2693 | /* Yes -- remove it. Previously we did not bother to |
2694 | remove the breakpoint if the section had been | |
2695 | unmapped, but let's not rely on that being safe. We | |
2696 | don't know what the overlay manager might do. */ | |
aa67235e UW |
2697 | |
2698 | /* However, we should remove *software* breakpoints only | |
2699 | if the section is still mapped, or else we overwrite | |
2700 | wrong code with the saved shadow contents. */ | |
348d480f PA |
2701 | if (bl->loc_type == bp_loc_hardware_breakpoint |
2702 | || section_is_mapped (bl->section)) | |
2703 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
2704 | else |
2705 | val = 0; | |
c906108c | 2706 | } |
c02f5703 MS |
2707 | else |
2708 | { | |
2709 | /* No -- not inserted, so no need to remove. No error. */ | |
2710 | val = 0; | |
2711 | } | |
c906108c | 2712 | } |
879d1e6b UW |
2713 | |
2714 | /* In some cases, we might not be able to remove a breakpoint | |
2715 | in a shared library that has already been removed, but we | |
2716 | have not yet processed the shlib unload event. */ | |
35df4500 | 2717 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
2718 | val = 0; |
2719 | ||
c906108c SS |
2720 | if (val) |
2721 | return val; | |
35df4500 | 2722 | bl->inserted = (is == mark_inserted); |
c906108c | 2723 | } |
35df4500 | 2724 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 2725 | { |
77b06cd7 TJB |
2726 | gdb_assert (bl->owner->ops != NULL |
2727 | && bl->owner->ops->remove_location != NULL); | |
2728 | ||
35df4500 | 2729 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 2730 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 2731 | |
c906108c | 2732 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 2733 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 2734 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 2735 | bl->owner->number); |
c906108c | 2736 | } |
35df4500 TJB |
2737 | else if (bl->owner->type == bp_catchpoint |
2738 | && breakpoint_enabled (bl->owner) | |
2739 | && !bl->duplicate) | |
ce78b96d | 2740 | { |
77b06cd7 TJB |
2741 | gdb_assert (bl->owner->ops != NULL |
2742 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 2743 | |
77b06cd7 | 2744 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
2745 | if (val) |
2746 | return val; | |
77b06cd7 | 2747 | |
35df4500 | 2748 | bl->inserted = (is == mark_inserted); |
ce78b96d | 2749 | } |
c906108c SS |
2750 | |
2751 | return 0; | |
2752 | } | |
2753 | ||
6c95b8df | 2754 | static int |
35df4500 | 2755 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
2756 | { |
2757 | int ret; | |
2758 | struct cleanup *old_chain; | |
2759 | ||
35df4500 TJB |
2760 | /* BL is never in moribund_locations by our callers. */ |
2761 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 2762 | |
35df4500 | 2763 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
2764 | /* Permanent breakpoints cannot be inserted or removed. */ |
2765 | return 0; | |
2766 | ||
2767 | /* The type of none suggests that owner is actually deleted. | |
2768 | This should not ever happen. */ | |
35df4500 | 2769 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
2770 | |
2771 | old_chain = save_current_space_and_thread (); | |
2772 | ||
35df4500 | 2773 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 2774 | |
35df4500 | 2775 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
2776 | |
2777 | do_cleanups (old_chain); | |
2778 | return ret; | |
2779 | } | |
2780 | ||
c906108c SS |
2781 | /* Clear the "inserted" flag in all breakpoints. */ |
2782 | ||
25b22b0a | 2783 | void |
fba45db2 | 2784 | mark_breakpoints_out (void) |
c906108c | 2785 | { |
35df4500 | 2786 | struct bp_location *bl, **blp_tmp; |
c906108c | 2787 | |
35df4500 TJB |
2788 | ALL_BP_LOCATIONS (bl, blp_tmp) |
2789 | if (bl->pspace == current_program_space) | |
2790 | bl->inserted = 0; | |
c906108c SS |
2791 | } |
2792 | ||
53a5351d JM |
2793 | /* Clear the "inserted" flag in all breakpoints and delete any |
2794 | breakpoints which should go away between runs of the program. | |
c906108c SS |
2795 | |
2796 | Plus other such housekeeping that has to be done for breakpoints | |
2797 | between runs. | |
2798 | ||
53a5351d JM |
2799 | Note: this function gets called at the end of a run (by |
2800 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 2801 | init_wait_for_inferior). */ |
c906108c SS |
2802 | |
2803 | ||
2804 | ||
2805 | void | |
fba45db2 | 2806 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 2807 | { |
35df4500 TJB |
2808 | struct breakpoint *b, *b_tmp; |
2809 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 2810 | int ix; |
6c95b8df | 2811 | struct program_space *pspace = current_program_space; |
c906108c | 2812 | |
50c71eaf PA |
2813 | /* If breakpoint locations are shared across processes, then there's |
2814 | nothing to do. */ | |
2567c7d9 | 2815 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
2816 | return; |
2817 | ||
35df4500 | 2818 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2819 | { |
35df4500 TJB |
2820 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
2821 | if (bl->pspace == pspace | |
2822 | && bl->owner->enable_state != bp_permanent) | |
2823 | bl->inserted = 0; | |
6c95b8df | 2824 | } |
075f6582 | 2825 | |
35df4500 | 2826 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 2827 | { |
6c95b8df PA |
2828 | if (b->loc && b->loc->pspace != pspace) |
2829 | continue; | |
2830 | ||
c5aa993b JM |
2831 | switch (b->type) |
2832 | { | |
2833 | case bp_call_dummy: | |
c906108c | 2834 | |
c5aa993b | 2835 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
2836 | cause problems when the inferior is rerun, so we better get |
2837 | rid of it. */ | |
2838 | ||
2839 | case bp_watchpoint_scope: | |
2840 | ||
2841 | /* Also get rid of scope breakpoints. */ | |
2842 | ||
2843 | case bp_shlib_event: | |
2844 | ||
2845 | /* Also remove solib event breakpoints. Their addresses may | |
2846 | have changed since the last time we ran the program. | |
2847 | Actually we may now be debugging against different target; | |
2848 | and so the solib backend that installed this breakpoint may | |
2849 | not be used in by the target. E.g., | |
2850 | ||
2851 | (gdb) file prog-linux | |
2852 | (gdb) run # native linux target | |
2853 | ... | |
2854 | (gdb) kill | |
2855 | (gdb) file prog-win.exe | |
2856 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
2857 | */ | |
c906108c | 2858 | |
c5aa993b JM |
2859 | delete_breakpoint (b); |
2860 | break; | |
c906108c | 2861 | |
c5aa993b JM |
2862 | case bp_watchpoint: |
2863 | case bp_hardware_watchpoint: | |
2864 | case bp_read_watchpoint: | |
2865 | case bp_access_watchpoint: | |
3a5c3e22 PA |
2866 | { |
2867 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 2868 | |
3a5c3e22 PA |
2869 | /* Likewise for watchpoints on local expressions. */ |
2870 | if (w->exp_valid_block != NULL) | |
2871 | delete_breakpoint (b); | |
2872 | else if (context == inf_starting) | |
2873 | { | |
2874 | /* Reset val field to force reread of starting value in | |
2875 | insert_breakpoints. */ | |
2876 | if (w->val) | |
2877 | value_free (w->val); | |
2878 | w->val = NULL; | |
2879 | w->val_valid = 0; | |
c860120c | 2880 | } |
3a5c3e22 | 2881 | } |
c5aa993b JM |
2882 | break; |
2883 | default: | |
c5aa993b JM |
2884 | break; |
2885 | } | |
2886 | } | |
1c5cfe86 PA |
2887 | |
2888 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
2889 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
2890 | decref_bp_location (&bl); | |
1c5cfe86 | 2891 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
2892 | } |
2893 | ||
6c95b8df PA |
2894 | /* These functions concern about actual breakpoints inserted in the |
2895 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
2896 | we need to hop over the bkpt --- so we check for address space | |
2897 | match, not program space. */ | |
2898 | ||
c2c6d25f JM |
2899 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
2900 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
2901 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
2902 | permanent breakpoint. | |
2903 | - When continuing from a location with an ordinary breakpoint, we | |
2904 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 2905 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
2906 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
2907 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 2908 | |
c2c6d25f | 2909 | enum breakpoint_here |
6c95b8df | 2910 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 2911 | { |
35df4500 | 2912 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 2913 | int any_breakpoint_here = 0; |
c906108c | 2914 | |
35df4500 | 2915 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 2916 | { |
35df4500 TJB |
2917 | if (bl->loc_type != bp_loc_software_breakpoint |
2918 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2919 | continue; |
2920 | ||
f1310107 | 2921 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
2922 | if ((breakpoint_enabled (bl->owner) |
2923 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 2924 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2925 | { |
2926 | if (overlay_debugging | |
35df4500 TJB |
2927 | && section_is_overlay (bl->section) |
2928 | && !section_is_mapped (bl->section)) | |
075f6582 | 2929 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 2930 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
2931 | return permanent_breakpoint_here; |
2932 | else | |
2933 | any_breakpoint_here = 1; | |
2934 | } | |
2935 | } | |
c906108c | 2936 | |
c2c6d25f | 2937 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
2938 | } |
2939 | ||
1c5cfe86 PA |
2940 | /* Return true if there's a moribund breakpoint at PC. */ |
2941 | ||
2942 | int | |
6c95b8df | 2943 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
2944 | { |
2945 | struct bp_location *loc; | |
2946 | int ix; | |
2947 | ||
2948 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 2949 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
2950 | return 1; |
2951 | ||
2952 | return 0; | |
2953 | } | |
c2c6d25f | 2954 | |
c36b740a | 2955 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
2956 | inserted using regular breakpoint_chain / bp_location array |
2957 | mechanism. This does not check for single-step breakpoints, which | |
2958 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
2959 | |
2960 | int | |
4a64f543 MS |
2961 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
2962 | CORE_ADDR pc) | |
c906108c | 2963 | { |
35df4500 | 2964 | struct bp_location *bl, **blp_tmp; |
c906108c | 2965 | |
35df4500 | 2966 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2967 | { |
35df4500 TJB |
2968 | if (bl->loc_type != bp_loc_software_breakpoint |
2969 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
2970 | continue; |
2971 | ||
35df4500 | 2972 | if (bl->inserted |
f1310107 | 2973 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
2974 | { |
2975 | if (overlay_debugging | |
35df4500 TJB |
2976 | && section_is_overlay (bl->section) |
2977 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
2978 | continue; /* unmapped overlay -- can't be a match */ |
2979 | else | |
2980 | return 1; | |
2981 | } | |
c5aa993b | 2982 | } |
c36b740a VP |
2983 | return 0; |
2984 | } | |
2985 | ||
2986 | /* Returns non-zero iff there's either regular breakpoint | |
2987 | or a single step breakpoint inserted at PC. */ | |
2988 | ||
2989 | int | |
6c95b8df | 2990 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 2991 | { |
6c95b8df | 2992 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 2993 | return 1; |
c906108c | 2994 | |
6c95b8df | 2995 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
2996 | return 1; |
2997 | ||
c906108c SS |
2998 | return 0; |
2999 | } | |
3000 | ||
4fa8626c DJ |
3001 | /* This function returns non-zero iff there is a software breakpoint |
3002 | inserted at PC. */ | |
3003 | ||
3004 | int | |
3e43a32a MS |
3005 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
3006 | CORE_ADDR pc) | |
4fa8626c | 3007 | { |
35df4500 | 3008 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 3009 | |
35df4500 | 3010 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 3011 | { |
35df4500 | 3012 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
3013 | continue; |
3014 | ||
35df4500 TJB |
3015 | if (bl->inserted |
3016 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 3017 | aspace, pc)) |
4fa8626c DJ |
3018 | { |
3019 | if (overlay_debugging | |
35df4500 TJB |
3020 | && section_is_overlay (bl->section) |
3021 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
3022 | continue; /* unmapped overlay -- can't be a match */ |
3023 | else | |
3024 | return 1; | |
3025 | } | |
3026 | } | |
3027 | ||
1aafd4da | 3028 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 3029 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3030 | return 1; |
3031 | ||
4fa8626c DJ |
3032 | return 0; |
3033 | } | |
3034 | ||
9093389c PA |
3035 | int |
3036 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
3037 | CORE_ADDR addr, ULONGEST len) | |
3038 | { | |
3039 | struct breakpoint *bpt; | |
3040 | ||
3041 | ALL_BREAKPOINTS (bpt) | |
3042 | { | |
3043 | struct bp_location *loc; | |
3044 | ||
3045 | if (bpt->type != bp_hardware_watchpoint | |
3046 | && bpt->type != bp_access_watchpoint) | |
3047 | continue; | |
3048 | ||
3049 | if (!breakpoint_enabled (bpt)) | |
3050 | continue; | |
3051 | ||
3052 | for (loc = bpt->loc; loc; loc = loc->next) | |
3053 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3054 | { | |
3055 | CORE_ADDR l, h; | |
3056 | ||
3057 | /* Check for intersection. */ | |
3058 | l = max (loc->address, addr); | |
3059 | h = min (loc->address + loc->length, addr + len); | |
3060 | if (l < h) | |
3061 | return 1; | |
3062 | } | |
3063 | } | |
3064 | return 0; | |
3065 | } | |
3066 | ||
075f6582 DJ |
3067 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
3068 | PC is valid for process/thread PTID. */ | |
c906108c SS |
3069 | |
3070 | int | |
6c95b8df PA |
3071 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
3072 | ptid_t ptid) | |
c906108c | 3073 | { |
35df4500 | 3074 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 3075 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 3076 | int thread = -1; |
4a306c9a | 3077 | int task = 0; |
a6f1cd96 | 3078 | |
35df4500 | 3079 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3080 | { |
35df4500 TJB |
3081 | if (bl->loc_type != bp_loc_software_breakpoint |
3082 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3083 | continue; |
3084 | ||
35df4500 TJB |
3085 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
3086 | if (!breakpoint_enabled (bl->owner) | |
3087 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
3088 | continue; |
3089 | ||
f1310107 | 3090 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
3091 | continue; |
3092 | ||
35df4500 | 3093 | if (bl->owner->thread != -1) |
075f6582 | 3094 | { |
a6f1cd96 JB |
3095 | /* This is a thread-specific breakpoint. Check that ptid |
3096 | matches that thread. If thread hasn't been computed yet, | |
3097 | it is now time to do so. */ | |
3098 | if (thread == -1) | |
3099 | thread = pid_to_thread_id (ptid); | |
35df4500 | 3100 | if (bl->owner->thread != thread) |
a6f1cd96 | 3101 | continue; |
075f6582 | 3102 | } |
a6f1cd96 | 3103 | |
35df4500 | 3104 | if (bl->owner->task != 0) |
4a306c9a JB |
3105 | { |
3106 | /* This is a task-specific breakpoint. Check that ptid | |
3107 | matches that task. If task hasn't been computed yet, | |
3108 | it is now time to do so. */ | |
3109 | if (task == 0) | |
3110 | task = ada_get_task_number (ptid); | |
35df4500 | 3111 | if (bl->owner->task != task) |
4a306c9a JB |
3112 | continue; |
3113 | } | |
3114 | ||
a6f1cd96 | 3115 | if (overlay_debugging |
35df4500 TJB |
3116 | && section_is_overlay (bl->section) |
3117 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
3118 | continue; /* unmapped overlay -- can't be a match */ |
3119 | ||
3120 | return 1; | |
c5aa993b | 3121 | } |
c906108c SS |
3122 | |
3123 | return 0; | |
3124 | } | |
c906108c | 3125 | \f |
c5aa993b | 3126 | |
c906108c SS |
3127 | /* bpstat stuff. External routines' interfaces are documented |
3128 | in breakpoint.h. */ | |
3129 | ||
3130 | int | |
fba45db2 | 3131 | ep_is_catchpoint (struct breakpoint *ep) |
c906108c | 3132 | { |
533be4dd | 3133 | return (ep->type == bp_catchpoint); |
c906108c SS |
3134 | } |
3135 | ||
f431efe5 PA |
3136 | /* Frees any storage that is part of a bpstat. Does not walk the |
3137 | 'next' chain. */ | |
3138 | ||
3139 | static void | |
198757a8 VP |
3140 | bpstat_free (bpstat bs) |
3141 | { | |
3142 | if (bs->old_val != NULL) | |
3143 | value_free (bs->old_val); | |
9add0f1b | 3144 | decref_counted_command_line (&bs->commands); |
f431efe5 | 3145 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
3146 | xfree (bs); |
3147 | } | |
3148 | ||
c906108c SS |
3149 | /* Clear a bpstat so that it says we are not at any breakpoint. |
3150 | Also free any storage that is part of a bpstat. */ | |
3151 | ||
3152 | void | |
fba45db2 | 3153 | bpstat_clear (bpstat *bsp) |
c906108c SS |
3154 | { |
3155 | bpstat p; | |
3156 | bpstat q; | |
3157 | ||
3158 | if (bsp == 0) | |
3159 | return; | |
3160 | p = *bsp; | |
3161 | while (p != NULL) | |
3162 | { | |
3163 | q = p->next; | |
198757a8 | 3164 | bpstat_free (p); |
c906108c SS |
3165 | p = q; |
3166 | } | |
3167 | *bsp = NULL; | |
3168 | } | |
3169 | ||
3170 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
3171 | is part of the bpstat is copied as well. */ | |
3172 | ||
3173 | bpstat | |
fba45db2 | 3174 | bpstat_copy (bpstat bs) |
c906108c SS |
3175 | { |
3176 | bpstat p = NULL; | |
3177 | bpstat tmp; | |
3178 | bpstat retval = NULL; | |
3179 | ||
3180 | if (bs == NULL) | |
3181 | return bs; | |
3182 | ||
3183 | for (; bs != NULL; bs = bs->next) | |
3184 | { | |
3185 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
3186 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 3187 | incref_counted_command_line (tmp->commands); |
f431efe5 | 3188 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 3189 | if (bs->old_val != NULL) |
3c3185ac JK |
3190 | { |
3191 | tmp->old_val = value_copy (bs->old_val); | |
3192 | release_value (tmp->old_val); | |
3193 | } | |
31cc81e9 | 3194 | |
c906108c SS |
3195 | if (p == NULL) |
3196 | /* This is the first thing in the chain. */ | |
3197 | retval = tmp; | |
3198 | else | |
3199 | p->next = tmp; | |
3200 | p = tmp; | |
3201 | } | |
3202 | p->next = NULL; | |
3203 | return retval; | |
3204 | } | |
3205 | ||
4a64f543 | 3206 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
3207 | |
3208 | bpstat | |
fba45db2 | 3209 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 3210 | { |
c5aa993b JM |
3211 | if (bsp == NULL) |
3212 | return NULL; | |
c906108c | 3213 | |
c5aa993b JM |
3214 | for (; bsp != NULL; bsp = bsp->next) |
3215 | { | |
f431efe5 | 3216 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
3217 | return bsp; |
3218 | } | |
c906108c SS |
3219 | return NULL; |
3220 | } | |
3221 | ||
4a64f543 MS |
3222 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
3223 | stopped at. *BSP upon return is a bpstat which points to the | |
3224 | remaining breakpoints stopped at (but which is not guaranteed to be | |
3225 | good for anything but further calls to bpstat_num). | |
3226 | ||
8671a17b PA |
3227 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
3228 | Return -1 if stopped at a breakpoint that has been deleted since | |
3229 | we set it. | |
3230 | Return 1 otherwise. */ | |
c906108c SS |
3231 | |
3232 | int | |
8671a17b | 3233 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
3234 | { |
3235 | struct breakpoint *b; | |
3236 | ||
3237 | if ((*bsp) == NULL) | |
3238 | return 0; /* No more breakpoint values */ | |
8671a17b | 3239 | |
4a64f543 MS |
3240 | /* We assume we'll never have several bpstats that correspond to a |
3241 | single breakpoint -- otherwise, this function might return the | |
3242 | same number more than once and this will look ugly. */ | |
f431efe5 | 3243 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
3244 | *bsp = (*bsp)->next; |
3245 | if (b == NULL) | |
3246 | return -1; /* breakpoint that's been deleted since */ | |
3247 | ||
3248 | *num = b->number; /* We have its number */ | |
3249 | return 1; | |
c906108c SS |
3250 | } |
3251 | ||
e93ca019 | 3252 | /* See breakpoint.h. */ |
c906108c SS |
3253 | |
3254 | void | |
e93ca019 | 3255 | bpstat_clear_actions (void) |
c906108c | 3256 | { |
e93ca019 JK |
3257 | struct thread_info *tp; |
3258 | bpstat bs; | |
3259 | ||
3260 | if (ptid_equal (inferior_ptid, null_ptid)) | |
3261 | return; | |
3262 | ||
3263 | tp = find_thread_ptid (inferior_ptid); | |
3264 | if (tp == NULL) | |
3265 | return; | |
3266 | ||
3267 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 3268 | { |
9add0f1b | 3269 | decref_counted_command_line (&bs->commands); |
abf85f46 | 3270 | |
c906108c SS |
3271 | if (bs->old_val != NULL) |
3272 | { | |
3273 | value_free (bs->old_val); | |
3274 | bs->old_val = NULL; | |
3275 | } | |
3276 | } | |
3277 | } | |
3278 | ||
f3b1572e PA |
3279 | /* Called when a command is about to proceed the inferior. */ |
3280 | ||
3281 | static void | |
3282 | breakpoint_about_to_proceed (void) | |
3283 | { | |
3284 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
3285 | { | |
3286 | struct thread_info *tp = inferior_thread (); | |
3287 | ||
3288 | /* Allow inferior function calls in breakpoint commands to not | |
3289 | interrupt the command list. When the call finishes | |
3290 | successfully, the inferior will be standing at the same | |
3291 | breakpoint as if nothing happened. */ | |
16c381f0 | 3292 | if (tp->control.in_infcall) |
f3b1572e PA |
3293 | return; |
3294 | } | |
3295 | ||
3296 | breakpoint_proceeded = 1; | |
3297 | } | |
3298 | ||
4a64f543 MS |
3299 | /* Stub for cleaning up our state if we error-out of a breakpoint |
3300 | command. */ | |
c906108c | 3301 | static void |
4efb68b1 | 3302 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
3303 | { |
3304 | executing_breakpoint_commands = 0; | |
3305 | } | |
3306 | ||
abf85f46 JK |
3307 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
3308 | or its equivalent. */ | |
3309 | ||
3310 | static int | |
3311 | command_line_is_silent (struct command_line *cmd) | |
3312 | { | |
3313 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
3314 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
3315 | } | |
3316 | ||
4a64f543 MS |
3317 | /* Execute all the commands associated with all the breakpoints at |
3318 | this location. Any of these commands could cause the process to | |
3319 | proceed beyond this point, etc. We look out for such changes by | |
3320 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 3321 | |
347bddb7 PA |
3322 | Returns true if a breakpoint command resumed the inferior. In that |
3323 | case, it is the caller's responsibility to recall it again with the | |
3324 | bpstat of the current thread. */ | |
3325 | ||
3326 | static int | |
3327 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
3328 | { |
3329 | bpstat bs; | |
3330 | struct cleanup *old_chain; | |
347bddb7 | 3331 | int again = 0; |
c906108c SS |
3332 | |
3333 | /* Avoid endless recursion if a `source' command is contained | |
3334 | in bs->commands. */ | |
3335 | if (executing_breakpoint_commands) | |
347bddb7 | 3336 | return 0; |
c906108c SS |
3337 | |
3338 | executing_breakpoint_commands = 1; | |
3339 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
3340 | ||
cf6c5ffb TT |
3341 | prevent_dont_repeat (); |
3342 | ||
4a64f543 | 3343 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
3344 | bs = *bsp; |
3345 | ||
3346 | breakpoint_proceeded = 0; | |
3347 | for (; bs != NULL; bs = bs->next) | |
3348 | { | |
9add0f1b | 3349 | struct counted_command_line *ccmd; |
6c50ab1c JB |
3350 | struct command_line *cmd; |
3351 | struct cleanup *this_cmd_tree_chain; | |
3352 | ||
3353 | /* Take ownership of the BSP's command tree, if it has one. | |
3354 | ||
3355 | The command tree could legitimately contain commands like | |
3356 | 'step' and 'next', which call clear_proceed_status, which | |
3357 | frees stop_bpstat's command tree. To make sure this doesn't | |
3358 | free the tree we're executing out from under us, we need to | |
3359 | take ownership of the tree ourselves. Since a given bpstat's | |
3360 | commands are only executed once, we don't need to copy it; we | |
3361 | can clear the pointer in the bpstat, and make sure we free | |
3362 | the tree when we're done. */ | |
9add0f1b TT |
3363 | ccmd = bs->commands; |
3364 | bs->commands = NULL; | |
abf85f46 JK |
3365 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
3366 | cmd = ccmd ? ccmd->commands : NULL; | |
3367 | if (command_line_is_silent (cmd)) | |
3368 | { | |
3369 | /* The action has been already done by bpstat_stop_status. */ | |
3370 | cmd = cmd->next; | |
3371 | } | |
6c50ab1c | 3372 | |
c906108c SS |
3373 | while (cmd != NULL) |
3374 | { | |
3375 | execute_control_command (cmd); | |
3376 | ||
3377 | if (breakpoint_proceeded) | |
3378 | break; | |
3379 | else | |
3380 | cmd = cmd->next; | |
3381 | } | |
6c50ab1c JB |
3382 | |
3383 | /* We can free this command tree now. */ | |
3384 | do_cleanups (this_cmd_tree_chain); | |
3385 | ||
c906108c | 3386 | if (breakpoint_proceeded) |
32c1e744 VP |
3387 | { |
3388 | if (target_can_async_p ()) | |
347bddb7 PA |
3389 | /* If we are in async mode, then the target might be still |
3390 | running, not stopped at any breakpoint, so nothing for | |
3391 | us to do here -- just return to the event loop. */ | |
3392 | ; | |
32c1e744 VP |
3393 | else |
3394 | /* In sync mode, when execute_control_command returns | |
3395 | we're already standing on the next breakpoint. | |
347bddb7 PA |
3396 | Breakpoint commands for that stop were not run, since |
3397 | execute_command does not run breakpoint commands -- | |
3398 | only command_line_handler does, but that one is not | |
3399 | involved in execution of breakpoint commands. So, we | |
3400 | can now execute breakpoint commands. It should be | |
3401 | noted that making execute_command do bpstat actions is | |
3402 | not an option -- in this case we'll have recursive | |
3403 | invocation of bpstat for each breakpoint with a | |
3404 | command, and can easily blow up GDB stack. Instead, we | |
3405 | return true, which will trigger the caller to recall us | |
3406 | with the new stop_bpstat. */ | |
3407 | again = 1; | |
3408 | break; | |
32c1e744 | 3409 | } |
c906108c | 3410 | } |
c2b8ed2c | 3411 | do_cleanups (old_chain); |
347bddb7 PA |
3412 | return again; |
3413 | } | |
3414 | ||
3415 | void | |
3416 | bpstat_do_actions (void) | |
3417 | { | |
353d1d73 JK |
3418 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
3419 | ||
347bddb7 PA |
3420 | /* Do any commands attached to breakpoint we are stopped at. */ |
3421 | while (!ptid_equal (inferior_ptid, null_ptid) | |
3422 | && target_has_execution | |
3423 | && !is_exited (inferior_ptid) | |
3424 | && !is_executing (inferior_ptid)) | |
3425 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
3426 | and only return when it is stopped at the next breakpoint, we | |
3427 | keep doing breakpoint actions until it returns false to | |
3428 | indicate the inferior was not resumed. */ | |
16c381f0 | 3429 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 3430 | break; |
353d1d73 JK |
3431 | |
3432 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
3433 | } |
3434 | ||
fa4727a6 DJ |
3435 | /* Print out the (old or new) value associated with a watchpoint. */ |
3436 | ||
3437 | static void | |
3438 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
3439 | { | |
3440 | if (val == NULL) | |
3441 | fprintf_unfiltered (stream, _("<unreadable>")); | |
3442 | else | |
79a45b7d TT |
3443 | { |
3444 | struct value_print_options opts; | |
3445 | get_user_print_options (&opts); | |
3446 | value_print (val, stream, &opts); | |
3447 | } | |
fa4727a6 DJ |
3448 | } |
3449 | ||
e514a9d6 | 3450 | /* Generic routine for printing messages indicating why we |
4a64f543 | 3451 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
3452 | 'print_it' in the bpstat structure. Under some circumstances we |
3453 | may decide not to print anything here and delegate the task to | |
4a64f543 | 3454 | normal_stop(). */ |
e514a9d6 JM |
3455 | |
3456 | static enum print_stop_action | |
3457 | print_bp_stop_message (bpstat bs) | |
3458 | { | |
3459 | switch (bs->print_it) | |
3460 | { | |
3461 | case print_it_noop: | |
4a64f543 | 3462 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
3463 | return PRINT_UNKNOWN; |
3464 | break; | |
3465 | ||
3466 | case print_it_done: | |
3467 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 3468 | relevant messages. */ |
e514a9d6 JM |
3469 | return PRINT_SRC_AND_LOC; |
3470 | break; | |
3471 | ||
3472 | case print_it_normal: | |
4f8d1dc6 | 3473 | { |
f431efe5 PA |
3474 | struct breakpoint *b = bs->breakpoint_at; |
3475 | ||
1a6a67de TJB |
3476 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
3477 | which has since been deleted. */ | |
3478 | if (b == NULL) | |
3479 | return PRINT_UNKNOWN; | |
3480 | ||
348d480f PA |
3481 | /* Normal case. Call the breakpoint's print_it method. */ |
3482 | return b->ops->print_it (bs); | |
4f8d1dc6 | 3483 | } |
348d480f | 3484 | break; |
3086aeae | 3485 | |
e514a9d6 | 3486 | default: |
8e65ff28 | 3487 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 3488 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 3489 | break; |
c906108c | 3490 | } |
c906108c SS |
3491 | } |
3492 | ||
e514a9d6 JM |
3493 | /* Print a message indicating what happened. This is called from |
3494 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
3495 | list - a list of the eventpoints that caused this stop. KIND is |
3496 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
3497 | routine calls the generic print routine for printing a message |
3498 | about reasons for stopping. This will print (for example) the | |
3499 | "Breakpoint n," part of the output. The return value of this | |
3500 | routine is one of: | |
c906108c | 3501 | |
4a64f543 | 3502 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 3503 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 3504 | code to print the location. An example is |
c5aa993b JM |
3505 | "Breakpoint 1, " which should be followed by |
3506 | the location. | |
917317f4 | 3507 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
3508 | to also print the location part of the message. |
3509 | An example is the catch/throw messages, which | |
4a64f543 | 3510 | don't require a location appended to the end. |
917317f4 | 3511 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 3512 | further info to be printed. */ |
c906108c | 3513 | |
917317f4 | 3514 | enum print_stop_action |
36dfb11c | 3515 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
3516 | { |
3517 | int val; | |
c5aa993b | 3518 | |
c906108c | 3519 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
3520 | (Currently all watchpoints go on the bpstat whether hit or not. |
3521 | That probably could (should) be changed, provided care is taken | |
c906108c | 3522 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
3523 | for (; bs; bs = bs->next) |
3524 | { | |
3525 | val = print_bp_stop_message (bs); | |
3526 | if (val == PRINT_SRC_ONLY | |
3527 | || val == PRINT_SRC_AND_LOC | |
3528 | || val == PRINT_NOTHING) | |
3529 | return val; | |
3530 | } | |
c906108c | 3531 | |
36dfb11c TT |
3532 | /* If we had hit a shared library event breakpoint, |
3533 | print_bp_stop_message would print out this message. If we hit an | |
3534 | OS-level shared library event, do the same thing. */ | |
3535 | if (kind == TARGET_WAITKIND_LOADED) | |
3536 | { | |
3537 | ui_out_text (current_uiout, _("Stopped due to shared library event\n")); | |
3538 | if (ui_out_is_mi_like_p (current_uiout)) | |
3539 | ui_out_field_string (current_uiout, "reason", | |
3540 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
3541 | return PRINT_NOTHING; | |
3542 | } | |
3543 | ||
e514a9d6 | 3544 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 3545 | with and nothing was printed. */ |
917317f4 | 3546 | return PRINT_UNKNOWN; |
c906108c SS |
3547 | } |
3548 | ||
4a64f543 MS |
3549 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
3550 | used inside a catch_errors to evaluate the breakpoint condition. | |
3551 | The argument is a "struct expression *" that has been cast to a | |
3552 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
3553 | |
3554 | static int | |
4efb68b1 | 3555 | breakpoint_cond_eval (void *exp) |
c906108c | 3556 | { |
278cd55f | 3557 | struct value *mark = value_mark (); |
c5aa993b | 3558 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 3559 | |
c906108c SS |
3560 | value_free_to_mark (mark); |
3561 | return i; | |
3562 | } | |
3563 | ||
5760d0ab | 3564 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
3565 | |
3566 | static bpstat | |
5760d0ab | 3567 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
3568 | { |
3569 | bpstat bs; | |
3570 | ||
3571 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
3572 | bs->next = NULL; |
3573 | **bs_link_pointer = bs; | |
3574 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
3575 | bs->breakpoint_at = bl->owner; |
3576 | bs->bp_location_at = bl; | |
3577 | incref_bp_location (bl); | |
c906108c SS |
3578 | /* If the condition is false, etc., don't do the commands. */ |
3579 | bs->commands = NULL; | |
3580 | bs->old_val = NULL; | |
3581 | bs->print_it = print_it_normal; | |
3582 | return bs; | |
3583 | } | |
3584 | \f | |
d983da9c DJ |
3585 | /* The target has stopped with waitstatus WS. Check if any hardware |
3586 | watchpoints have triggered, according to the target. */ | |
3587 | ||
3588 | int | |
3589 | watchpoints_triggered (struct target_waitstatus *ws) | |
3590 | { | |
d92524f1 | 3591 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
3592 | CORE_ADDR addr; |
3593 | struct breakpoint *b; | |
3594 | ||
3595 | if (!stopped_by_watchpoint) | |
3596 | { | |
3597 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
3598 | as not triggered. */ | |
3599 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3600 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
3601 | { |
3602 | struct watchpoint *w = (struct watchpoint *) b; | |
3603 | ||
3604 | w->watchpoint_triggered = watch_triggered_no; | |
3605 | } | |
d983da9c DJ |
3606 | |
3607 | return 0; | |
3608 | } | |
3609 | ||
3610 | if (!target_stopped_data_address (¤t_target, &addr)) | |
3611 | { | |
3612 | /* We were stopped by a watchpoint, but we don't know where. | |
3613 | Mark all watchpoints as unknown. */ | |
3614 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3615 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
3616 | { |
3617 | struct watchpoint *w = (struct watchpoint *) b; | |
3618 | ||
3619 | w->watchpoint_triggered = watch_triggered_unknown; | |
3620 | } | |
d983da9c DJ |
3621 | |
3622 | return stopped_by_watchpoint; | |
3623 | } | |
3624 | ||
3625 | /* The target could report the data address. Mark watchpoints | |
3626 | affected by this data address as triggered, and all others as not | |
3627 | triggered. */ | |
3628 | ||
3629 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 3630 | if (is_hardware_watchpoint (b)) |
d983da9c | 3631 | { |
3a5c3e22 | 3632 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 3633 | struct bp_location *loc; |
d983da9c | 3634 | |
3a5c3e22 | 3635 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 3636 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 3637 | { |
3a5c3e22 | 3638 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 3639 | { |
3a5c3e22 PA |
3640 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
3641 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
3642 | |
3643 | if (newaddr == start) | |
3644 | { | |
3a5c3e22 | 3645 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
3646 | break; |
3647 | } | |
3648 | } | |
3649 | /* Exact match not required. Within range is sufficient. */ | |
3650 | else if (target_watchpoint_addr_within_range (¤t_target, | |
3651 | addr, loc->address, | |
3652 | loc->length)) | |
3653 | { | |
3a5c3e22 | 3654 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
3655 | break; |
3656 | } | |
3657 | } | |
d983da9c DJ |
3658 | } |
3659 | ||
3660 | return 1; | |
3661 | } | |
3662 | ||
c906108c SS |
3663 | /* Possible return values for watchpoint_check (this can't be an enum |
3664 | because of check_errors). */ | |
3665 | /* The watchpoint has been deleted. */ | |
3666 | #define WP_DELETED 1 | |
3667 | /* The value has changed. */ | |
3668 | #define WP_VALUE_CHANGED 2 | |
3669 | /* The value has not changed. */ | |
3670 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
3671 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
3672 | #define WP_IGNORE 4 | |
c906108c SS |
3673 | |
3674 | #define BP_TEMPFLAG 1 | |
3675 | #define BP_HARDWAREFLAG 2 | |
3676 | ||
4a64f543 MS |
3677 | /* Evaluate watchpoint condition expression and check if its value |
3678 | changed. | |
553e4c11 JB |
3679 | |
3680 | P should be a pointer to struct bpstat, but is defined as a void * | |
3681 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
3682 | |
3683 | static int | |
4efb68b1 | 3684 | watchpoint_check (void *p) |
c906108c SS |
3685 | { |
3686 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 3687 | struct watchpoint *b; |
c906108c SS |
3688 | struct frame_info *fr; |
3689 | int within_current_scope; | |
3690 | ||
f431efe5 | 3691 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 3692 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 3693 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 3694 | |
f6bc2008 PA |
3695 | /* If this is a local watchpoint, we only want to check if the |
3696 | watchpoint frame is in scope if the current thread is the thread | |
3697 | that was used to create the watchpoint. */ | |
3698 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 3699 | return WP_IGNORE; |
f6bc2008 | 3700 | |
c906108c SS |
3701 | if (b->exp_valid_block == NULL) |
3702 | within_current_scope = 1; | |
3703 | else | |
3704 | { | |
edb3359d DJ |
3705 | struct frame_info *frame = get_current_frame (); |
3706 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
3707 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
3708 | ||
4a64f543 MS |
3709 | /* in_function_epilogue_p() returns a non-zero value if we're |
3710 | still in the function but the stack frame has already been | |
3711 | invalidated. Since we can't rely on the values of local | |
3712 | variables after the stack has been destroyed, we are treating | |
3713 | the watchpoint in that state as `not changed' without further | |
3714 | checking. Don't mark watchpoints as changed if the current | |
3715 | frame is in an epilogue - even if they are in some other | |
3716 | frame, our view of the stack is likely to be wrong and | |
3717 | frame_find_by_id could error out. */ | |
a0f49112 | 3718 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 3719 | return WP_IGNORE; |
a0f49112 | 3720 | |
101dcfbe | 3721 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 3722 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
3723 | |
3724 | /* If we've gotten confused in the unwinder, we might have | |
3725 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
3726 | if (within_current_scope) |
3727 | { | |
3728 | struct symbol *function; | |
3729 | ||
3730 | function = get_frame_function (fr); | |
3731 | if (function == NULL | |
3732 | || !contained_in (b->exp_valid_block, | |
3733 | SYMBOL_BLOCK_VALUE (function))) | |
3734 | within_current_scope = 0; | |
3735 | } | |
69fbadd5 | 3736 | |
edb3359d | 3737 | if (within_current_scope) |
c906108c SS |
3738 | /* If we end up stopping, the current frame will get selected |
3739 | in normal_stop. So this call to select_frame won't affect | |
3740 | the user. */ | |
0f7d239c | 3741 | select_frame (fr); |
c906108c | 3742 | } |
c5aa993b | 3743 | |
c906108c SS |
3744 | if (within_current_scope) |
3745 | { | |
4a64f543 MS |
3746 | /* We use value_{,free_to_}mark because it could be a *long* |
3747 | time before we return to the command level and call | |
3748 | free_all_values. We can't call free_all_values because we | |
3749 | might be in the middle of evaluating a function call. */ | |
c906108c | 3750 | |
0cf6dd15 | 3751 | int pc = 0; |
9c06b0b4 | 3752 | struct value *mark; |
fa4727a6 DJ |
3753 | struct value *new_val; |
3754 | ||
3a5c3e22 | 3755 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
3756 | /* Since we don't know the exact trigger address (from |
3757 | stopped_data_address), just tell the user we've triggered | |
3758 | a mask watchpoint. */ | |
3759 | return WP_VALUE_CHANGED; | |
3760 | ||
3761 | mark = value_mark (); | |
0cf6dd15 | 3762 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 3763 | |
4a64f543 MS |
3764 | /* We use value_equal_contents instead of value_equal because |
3765 | the latter coerces an array to a pointer, thus comparing just | |
3766 | the address of the array instead of its contents. This is | |
3767 | not what we want. */ | |
fa4727a6 | 3768 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 3769 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 3770 | { |
fa4727a6 DJ |
3771 | if (new_val != NULL) |
3772 | { | |
3773 | release_value (new_val); | |
3774 | value_free_to_mark (mark); | |
3775 | } | |
c906108c SS |
3776 | bs->old_val = b->val; |
3777 | b->val = new_val; | |
fa4727a6 | 3778 | b->val_valid = 1; |
c906108c SS |
3779 | return WP_VALUE_CHANGED; |
3780 | } | |
3781 | else | |
3782 | { | |
60e1c644 | 3783 | /* Nothing changed. */ |
c906108c | 3784 | value_free_to_mark (mark); |
c906108c SS |
3785 | return WP_VALUE_NOT_CHANGED; |
3786 | } | |
3787 | } | |
3788 | else | |
3789 | { | |
79a45e25 PA |
3790 | struct ui_out *uiout = current_uiout; |
3791 | ||
c906108c | 3792 | /* This seems like the only logical thing to do because |
c5aa993b JM |
3793 | if we temporarily ignored the watchpoint, then when |
3794 | we reenter the block in which it is valid it contains | |
3795 | garbage (in the case of a function, it may have two | |
3796 | garbage values, one before and one after the prologue). | |
3797 | So we can't even detect the first assignment to it and | |
3798 | watch after that (since the garbage may or may not equal | |
3799 | the first value assigned). */ | |
348d480f PA |
3800 | /* We print all the stop information in |
3801 | breakpoint_ops->print_it, but in this case, by the time we | |
3802 | call breakpoint_ops->print_it this bp will be deleted | |
3803 | already. So we have no choice but print the information | |
3804 | here. */ | |
9dc5e2a9 | 3805 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
3806 | ui_out_field_string |
3807 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 3808 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 3809 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
3810 | ui_out_text (uiout, |
3811 | " deleted because the program has left the block in\n\ | |
8b93c638 | 3812 | which its expression is valid.\n"); |
4ce44c66 | 3813 | |
cdac0397 | 3814 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 3815 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 3816 | watchpoint_del_at_next_stop (b); |
c906108c SS |
3817 | |
3818 | return WP_DELETED; | |
3819 | } | |
3820 | } | |
3821 | ||
18a18393 | 3822 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
3823 | breakpoint location BL. This function does not check if we should |
3824 | stop, only if BL explains the stop. */ | |
3825 | ||
18a18393 | 3826 | static int |
6c95b8df PA |
3827 | bpstat_check_location (const struct bp_location *bl, |
3828 | struct address_space *aspace, CORE_ADDR bp_addr) | |
18a18393 VP |
3829 | { |
3830 | struct breakpoint *b = bl->owner; | |
3831 | ||
348d480f | 3832 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
3833 | gdb_assert (b != NULL); |
3834 | ||
348d480f | 3835 | return b->ops->breakpoint_hit (bl, aspace, bp_addr); |
18a18393 VP |
3836 | } |
3837 | ||
3a5c3e22 PA |
3838 | /* Determine if the watched values have actually changed, and we |
3839 | should stop. If not, set BS->stop to 0. */ | |
3840 | ||
18a18393 VP |
3841 | static void |
3842 | bpstat_check_watchpoint (bpstat bs) | |
3843 | { | |
2bdf28a0 | 3844 | const struct bp_location *bl; |
3a5c3e22 | 3845 | struct watchpoint *b; |
2bdf28a0 JK |
3846 | |
3847 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 3848 | bl = bs->bp_location_at; |
2bdf28a0 | 3849 | gdb_assert (bl != NULL); |
3a5c3e22 | 3850 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 3851 | gdb_assert (b != NULL); |
18a18393 | 3852 | |
18a18393 | 3853 | { |
18a18393 VP |
3854 | int must_check_value = 0; |
3855 | ||
3a5c3e22 | 3856 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
3857 | /* For a software watchpoint, we must always check the |
3858 | watched value. */ | |
3859 | must_check_value = 1; | |
3860 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
3861 | /* We have a hardware watchpoint (read, write, or access) | |
3862 | and the target earlier reported an address watched by | |
3863 | this watchpoint. */ | |
3864 | must_check_value = 1; | |
3865 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 3866 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
3867 | /* We were stopped by a hardware watchpoint, but the target could |
3868 | not report the data address. We must check the watchpoint's | |
3869 | value. Access and read watchpoints are out of luck; without | |
3870 | a data address, we can't figure it out. */ | |
3871 | must_check_value = 1; | |
3a5c3e22 | 3872 | |
18a18393 VP |
3873 | if (must_check_value) |
3874 | { | |
3e43a32a MS |
3875 | char *message |
3876 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 3877 | b->base.number); |
18a18393 VP |
3878 | struct cleanup *cleanups = make_cleanup (xfree, message); |
3879 | int e = catch_errors (watchpoint_check, bs, message, | |
3880 | RETURN_MASK_ALL); | |
3881 | do_cleanups (cleanups); | |
3882 | switch (e) | |
3883 | { | |
3884 | case WP_DELETED: | |
3885 | /* We've already printed what needs to be printed. */ | |
3886 | bs->print_it = print_it_done; | |
3887 | /* Stop. */ | |
3888 | break; | |
60e1c644 PA |
3889 | case WP_IGNORE: |
3890 | bs->print_it = print_it_noop; | |
3891 | bs->stop = 0; | |
3892 | break; | |
18a18393 | 3893 | case WP_VALUE_CHANGED: |
3a5c3e22 | 3894 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 3895 | { |
85d721b8 PA |
3896 | /* There are two cases to consider here: |
3897 | ||
4a64f543 | 3898 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
3899 | In that case, trust the target, and always report |
3900 | the watchpoint hit to the user. Even though | |
3901 | reads don't cause value changes, the value may | |
3902 | have changed since the last time it was read, and | |
3903 | since we're not trapping writes, we will not see | |
3904 | those, and as such we should ignore our notion of | |
3905 | old value. | |
3906 | ||
4a64f543 | 3907 | 2. We're watching the triggered memory for both |
85d721b8 PA |
3908 | reads and writes. There are two ways this may |
3909 | happen: | |
3910 | ||
4a64f543 | 3911 | 2.1. This is a target that can't break on data |
85d721b8 PA |
3912 | reads only, but can break on accesses (reads or |
3913 | writes), such as e.g., x86. We detect this case | |
3914 | at the time we try to insert read watchpoints. | |
3915 | ||
4a64f543 | 3916 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
3917 | watchpoints, but, the user set an access or write |
3918 | watchpoint watching the same memory as this read | |
3919 | watchpoint. | |
3920 | ||
3921 | If we're watching memory writes as well as reads, | |
3922 | ignore watchpoint hits when we find that the | |
3923 | value hasn't changed, as reads don't cause | |
3924 | changes. This still gives false positives when | |
3925 | the program writes the same value to memory as | |
3926 | what there was already in memory (we will confuse | |
3927 | it for a read), but it's much better than | |
3928 | nothing. */ | |
3929 | ||
3930 | int other_write_watchpoint = 0; | |
3931 | ||
3932 | if (bl->watchpoint_type == hw_read) | |
3933 | { | |
3934 | struct breakpoint *other_b; | |
3935 | ||
3936 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
3937 | if (other_b->type == bp_hardware_watchpoint |
3938 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 3939 | { |
3a5c3e22 PA |
3940 | struct watchpoint *other_w = |
3941 | (struct watchpoint *) other_b; | |
3942 | ||
3943 | if (other_w->watchpoint_triggered | |
3944 | == watch_triggered_yes) | |
3945 | { | |
3946 | other_write_watchpoint = 1; | |
3947 | break; | |
3948 | } | |
85d721b8 PA |
3949 | } |
3950 | } | |
3951 | ||
3952 | if (other_write_watchpoint | |
3953 | || bl->watchpoint_type == hw_access) | |
3954 | { | |
3955 | /* We're watching the same memory for writes, | |
3956 | and the value changed since the last time we | |
3957 | updated it, so this trap must be for a write. | |
3958 | Ignore it. */ | |
3959 | bs->print_it = print_it_noop; | |
3960 | bs->stop = 0; | |
3961 | } | |
18a18393 VP |
3962 | } |
3963 | break; | |
3964 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
3965 | if (b->base.type == bp_hardware_watchpoint |
3966 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
3967 | { |
3968 | /* Don't stop: write watchpoints shouldn't fire if | |
3969 | the value hasn't changed. */ | |
3970 | bs->print_it = print_it_noop; | |
3971 | bs->stop = 0; | |
3972 | } | |
3973 | /* Stop. */ | |
3974 | break; | |
3975 | default: | |
3976 | /* Can't happen. */ | |
3977 | case 0: | |
3978 | /* Error from catch_errors. */ | |
3a5c3e22 | 3979 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 3980 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
3981 | /* We've already printed what needs to be printed. */ |
3982 | bs->print_it = print_it_done; | |
3983 | break; | |
3984 | } | |
3985 | } | |
3986 | else /* must_check_value == 0 */ | |
3987 | { | |
3988 | /* This is a case where some watchpoint(s) triggered, but | |
3989 | not at the address of this watchpoint, or else no | |
3990 | watchpoint triggered after all. So don't print | |
3991 | anything for this watchpoint. */ | |
3992 | bs->print_it = print_it_noop; | |
3993 | bs->stop = 0; | |
3994 | } | |
3995 | } | |
3996 | } | |
3997 | ||
3998 | ||
3999 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4000 | of breakpoint referred to by BS. If we should not stop for this | |
4001 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4002 | |
18a18393 VP |
4003 | static void |
4004 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4005 | { | |
4006 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
4007 | const struct bp_location *bl; |
4008 | struct breakpoint *b; | |
4009 | ||
4010 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4011 | bl = bs->bp_location_at; |
2bdf28a0 | 4012 | gdb_assert (bl != NULL); |
f431efe5 | 4013 | b = bs->breakpoint_at; |
2bdf28a0 | 4014 | gdb_assert (b != NULL); |
18a18393 VP |
4015 | |
4016 | if (frame_id_p (b->frame_id) | |
edb3359d | 4017 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4018 | bs->stop = 0; |
4019 | else if (bs->stop) | |
4020 | { | |
4021 | int value_is_zero = 0; | |
60e1c644 PA |
4022 | struct expression *cond; |
4023 | ||
7371cf6d PM |
4024 | /* Evaluate Python breakpoints that have a "stop" |
4025 | method implemented. */ | |
4026 | if (b->py_bp_object) | |
4027 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
4028 | ||
60e1c644 | 4029 | if (is_watchpoint (b)) |
3a5c3e22 PA |
4030 | { |
4031 | struct watchpoint *w = (struct watchpoint *) b; | |
4032 | ||
4033 | cond = w->cond_exp; | |
4034 | } | |
60e1c644 PA |
4035 | else |
4036 | cond = bl->cond; | |
4037 | ||
f431efe5 | 4038 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 4039 | { |
60e1c644 | 4040 | int within_current_scope = 1; |
3a5c3e22 | 4041 | struct watchpoint * w; |
60e1c644 | 4042 | |
c5bc3a77 DJ |
4043 | /* We use value_mark and value_free_to_mark because it could |
4044 | be a long time before we return to the command level and | |
4045 | call free_all_values. We can't call free_all_values | |
4046 | because we might be in the middle of evaluating a | |
4047 | function call. */ | |
4048 | struct value *mark = value_mark (); | |
4049 | ||
3a5c3e22 PA |
4050 | if (is_watchpoint (b)) |
4051 | w = (struct watchpoint *) b; | |
4052 | else | |
4053 | w = NULL; | |
4054 | ||
edb3359d DJ |
4055 | /* Need to select the frame, with all that implies so that |
4056 | the conditions will have the right context. Because we | |
4057 | use the frame, we will not see an inlined function's | |
4058 | variables when we arrive at a breakpoint at the start | |
4059 | of the inlined function; the current frame will be the | |
4060 | call site. */ | |
3a5c3e22 | 4061 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
4062 | select_frame (get_current_frame ()); |
4063 | else | |
4064 | { | |
4065 | struct frame_info *frame; | |
4066 | ||
4067 | /* For local watchpoint expressions, which particular | |
4068 | instance of a local is being watched matters, so we | |
4069 | keep track of the frame to evaluate the expression | |
4070 | in. To evaluate the condition however, it doesn't | |
4071 | really matter which instantiation of the function | |
4072 | where the condition makes sense triggers the | |
4073 | watchpoint. This allows an expression like "watch | |
4074 | global if q > 10" set in `func', catch writes to | |
4075 | global on all threads that call `func', or catch | |
4076 | writes on all recursive calls of `func' by a single | |
4077 | thread. We simply always evaluate the condition in | |
4078 | the innermost frame that's executing where it makes | |
4079 | sense to evaluate the condition. It seems | |
4080 | intuitive. */ | |
3a5c3e22 | 4081 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
4082 | if (frame != NULL) |
4083 | select_frame (frame); | |
4084 | else | |
4085 | within_current_scope = 0; | |
4086 | } | |
4087 | if (within_current_scope) | |
4088 | value_is_zero | |
4089 | = catch_errors (breakpoint_cond_eval, cond, | |
4090 | "Error in testing breakpoint condition:\n", | |
4091 | RETURN_MASK_ALL); | |
4092 | else | |
4093 | { | |
4094 | warning (_("Watchpoint condition cannot be tested " | |
4095 | "in the current scope")); | |
4096 | /* If we failed to set the right context for this | |
4097 | watchpoint, unconditionally report it. */ | |
4098 | value_is_zero = 0; | |
4099 | } | |
4a64f543 | 4100 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 4101 | value_free_to_mark (mark); |
18a18393 | 4102 | } |
60e1c644 PA |
4103 | |
4104 | if (cond && value_is_zero) | |
18a18393 VP |
4105 | { |
4106 | bs->stop = 0; | |
4107 | } | |
4108 | else if (b->thread != -1 && b->thread != thread_id) | |
4109 | { | |
4110 | bs->stop = 0; | |
4111 | } | |
4112 | else if (b->ignore_count > 0) | |
4113 | { | |
4114 | b->ignore_count--; | |
4115 | annotate_ignore_count_change (); | |
4116 | bs->stop = 0; | |
4a64f543 | 4117 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 4118 | ++(b->hit_count); |
8d3788bd | 4119 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
4120 | } |
4121 | } | |
4122 | } | |
4123 | ||
4124 | ||
9709f61c | 4125 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 4126 | BP_ADDR in thread PTID. |
c906108c | 4127 | |
d983da9c | 4128 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
4129 | don't understand this stop. Result is a chain of bpstat's such |
4130 | that: | |
c906108c | 4131 | |
c5aa993b | 4132 | if we don't understand the stop, the result is a null pointer. |
c906108c | 4133 | |
c5aa993b | 4134 | if we understand why we stopped, the result is not null. |
c906108c | 4135 | |
c5aa993b JM |
4136 | Each element of the chain refers to a particular breakpoint or |
4137 | watchpoint at which we have stopped. (We may have stopped for | |
4138 | several reasons concurrently.) | |
c906108c | 4139 | |
c5aa993b JM |
4140 | Each element of the chain has valid next, breakpoint_at, |
4141 | commands, FIXME??? fields. */ | |
c906108c SS |
4142 | |
4143 | bpstat | |
6c95b8df PA |
4144 | bpstat_stop_status (struct address_space *aspace, |
4145 | CORE_ADDR bp_addr, ptid_t ptid) | |
c906108c | 4146 | { |
0d381245 | 4147 | struct breakpoint *b = NULL; |
afe38095 | 4148 | struct bp_location *bl; |
20874c92 | 4149 | struct bp_location *loc; |
5760d0ab JK |
4150 | /* First item of allocated bpstat's. */ |
4151 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 4152 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 4153 | bpstat bs; |
20874c92 | 4154 | int ix; |
429374b8 | 4155 | int need_remove_insert; |
f431efe5 | 4156 | int removed_any; |
c906108c | 4157 | |
f431efe5 PA |
4158 | /* First, build the bpstat chain with locations that explain a |
4159 | target stop, while being careful to not set the target running, | |
4160 | as that may invalidate locations (in particular watchpoint | |
4161 | locations are recreated). Resuming will happen here with | |
4162 | breakpoint conditions or watchpoint expressions that include | |
4163 | inferior function calls. */ | |
c5aa993b | 4164 | |
429374b8 JK |
4165 | ALL_BREAKPOINTS (b) |
4166 | { | |
4167 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
4168 | continue; | |
a5606eee | 4169 | |
429374b8 JK |
4170 | for (bl = b->loc; bl != NULL; bl = bl->next) |
4171 | { | |
4a64f543 MS |
4172 | /* For hardware watchpoints, we look only at the first |
4173 | location. The watchpoint_check function will work on the | |
4174 | entire expression, not the individual locations. For | |
4175 | read watchpoints, the watchpoints_triggered function has | |
4176 | checked all locations already. */ | |
429374b8 JK |
4177 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
4178 | break; | |
18a18393 | 4179 | |
429374b8 JK |
4180 | if (bl->shlib_disabled) |
4181 | continue; | |
c5aa993b | 4182 | |
429374b8 JK |
4183 | if (!bpstat_check_location (bl, aspace, bp_addr)) |
4184 | continue; | |
c5aa993b | 4185 | |
4a64f543 MS |
4186 | /* Come here if it's a watchpoint, or if the break address |
4187 | matches. */ | |
c5aa993b | 4188 | |
4a64f543 MS |
4189 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
4190 | explain stop. */ | |
c5aa993b | 4191 | |
f431efe5 PA |
4192 | /* Assume we stop. Should we find a watchpoint that is not |
4193 | actually triggered, or if the condition of the breakpoint | |
4194 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
4195 | bs->stop = 1; |
4196 | bs->print = 1; | |
d983da9c | 4197 | |
f431efe5 PA |
4198 | /* If this is a scope breakpoint, mark the associated |
4199 | watchpoint as triggered so that we will handle the | |
4200 | out-of-scope event. We'll get to the watchpoint next | |
4201 | iteration. */ | |
d0fb5eae | 4202 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
4203 | { |
4204 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
4205 | ||
4206 | w->watchpoint_triggered = watch_triggered_yes; | |
4207 | } | |
f431efe5 PA |
4208 | } |
4209 | } | |
4210 | ||
4211 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
4212 | { | |
f1310107 | 4213 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 4214 | { |
5760d0ab | 4215 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
4216 | /* For hits of moribund locations, we should just proceed. */ |
4217 | bs->stop = 0; | |
4218 | bs->print = 0; | |
4219 | bs->print_it = print_it_noop; | |
4220 | } | |
4221 | } | |
4222 | ||
f431efe5 PA |
4223 | /* Now go through the locations that caused the target to stop, and |
4224 | check whether we're interested in reporting this stop to higher | |
4225 | layers, or whether we should resume the target transparently. */ | |
4226 | ||
4227 | removed_any = 0; | |
4228 | ||
5760d0ab | 4229 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
4230 | { |
4231 | if (!bs->stop) | |
4232 | continue; | |
4233 | ||
f431efe5 | 4234 | b = bs->breakpoint_at; |
348d480f PA |
4235 | b->ops->check_status (bs); |
4236 | if (bs->stop) | |
28010a5d | 4237 | { |
348d480f | 4238 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 4239 | |
429374b8 JK |
4240 | if (bs->stop) |
4241 | { | |
4242 | ++(b->hit_count); | |
8d3788bd | 4243 | observer_notify_breakpoint_modified (b); |
c906108c | 4244 | |
4a64f543 | 4245 | /* We will stop here. */ |
429374b8 JK |
4246 | if (b->disposition == disp_disable) |
4247 | { | |
4248 | if (b->enable_state != bp_permanent) | |
4249 | b->enable_state = bp_disabled; | |
f431efe5 | 4250 | removed_any = 1; |
429374b8 JK |
4251 | } |
4252 | if (b->silent) | |
4253 | bs->print = 0; | |
4254 | bs->commands = b->commands; | |
9add0f1b | 4255 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
4256 | if (command_line_is_silent (bs->commands |
4257 | ? bs->commands->commands : NULL)) | |
4258 | bs->print = 0; | |
429374b8 JK |
4259 | } |
4260 | ||
348d480f | 4261 | } |
a9b3a50f PA |
4262 | |
4263 | /* Print nothing for this entry if we don't stop or don't | |
4264 | print. */ | |
4265 | if (!bs->stop || !bs->print) | |
4266 | bs->print_it = print_it_noop; | |
429374b8 | 4267 | } |
876fa593 | 4268 | |
d983da9c DJ |
4269 | /* If we aren't stopping, the value of some hardware watchpoint may |
4270 | not have changed, but the intermediate memory locations we are | |
4271 | watching may have. Don't bother if we're stopping; this will get | |
4272 | done later. */ | |
d832cb68 | 4273 | need_remove_insert = 0; |
5760d0ab JK |
4274 | if (! bpstat_causes_stop (bs_head)) |
4275 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 4276 | if (!bs->stop |
f431efe5 PA |
4277 | && bs->breakpoint_at |
4278 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 4279 | { |
3a5c3e22 PA |
4280 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
4281 | ||
4282 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 4283 | need_remove_insert = 1; |
d983da9c DJ |
4284 | } |
4285 | ||
d832cb68 | 4286 | if (need_remove_insert) |
2d134ed3 | 4287 | update_global_location_list (1); |
f431efe5 PA |
4288 | else if (removed_any) |
4289 | update_global_location_list (0); | |
d832cb68 | 4290 | |
5760d0ab | 4291 | return bs_head; |
c906108c | 4292 | } |
628fe4e4 JK |
4293 | |
4294 | static void | |
4295 | handle_jit_event (void) | |
4296 | { | |
4297 | struct frame_info *frame; | |
4298 | struct gdbarch *gdbarch; | |
4299 | ||
4300 | /* Switch terminal for any messages produced by | |
4301 | breakpoint_re_set. */ | |
4302 | target_terminal_ours_for_output (); | |
4303 | ||
4304 | frame = get_current_frame (); | |
4305 | gdbarch = get_frame_arch (frame); | |
4306 | ||
4307 | jit_event_handler (gdbarch); | |
4308 | ||
4309 | target_terminal_inferior (); | |
4310 | } | |
4311 | ||
4312 | /* Prepare WHAT final decision for infrun. */ | |
4313 | ||
4314 | /* Decide what infrun needs to do with this bpstat. */ | |
4315 | ||
c906108c | 4316 | struct bpstat_what |
0e30163f | 4317 | bpstat_what (bpstat bs_head) |
c906108c | 4318 | { |
c906108c | 4319 | struct bpstat_what retval; |
628fe4e4 JK |
4320 | /* We need to defer calling `solib_add', as adding new symbols |
4321 | resets breakpoints, which in turn deletes breakpoint locations, | |
4322 | and hence may clear unprocessed entries in the BS chain. */ | |
4323 | int shlib_event = 0; | |
4324 | int jit_event = 0; | |
0e30163f | 4325 | bpstat bs; |
c906108c | 4326 | |
628fe4e4 | 4327 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 4328 | retval.call_dummy = STOP_NONE; |
186c406b | 4329 | retval.is_longjmp = 0; |
628fe4e4 | 4330 | |
0e30163f | 4331 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 4332 | { |
628fe4e4 JK |
4333 | /* Extract this BS's action. After processing each BS, we check |
4334 | if its action overrides all we've seem so far. */ | |
4335 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4336 | enum bptype bptype; | |
4337 | ||
c906108c | 4338 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
4339 | { |
4340 | /* I suspect this can happen if it was a momentary | |
4341 | breakpoint which has since been deleted. */ | |
4342 | bptype = bp_none; | |
4343 | } | |
20874c92 | 4344 | else |
f431efe5 | 4345 | bptype = bs->breakpoint_at->type; |
628fe4e4 | 4346 | |
a9b3a50f PA |
4347 | if (bptype == bp_shlib_event) |
4348 | shlib_event = 1; | |
4349 | ||
628fe4e4 | 4350 | switch (bptype) |
c906108c SS |
4351 | { |
4352 | case bp_none: | |
628fe4e4 | 4353 | break; |
c906108c SS |
4354 | case bp_breakpoint: |
4355 | case bp_hardware_breakpoint: | |
4356 | case bp_until: | |
4357 | case bp_finish: | |
a9b3a50f | 4358 | case bp_shlib_event: |
c906108c SS |
4359 | if (bs->stop) |
4360 | { | |
4361 | if (bs->print) | |
628fe4e4 | 4362 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4363 | else |
628fe4e4 | 4364 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4365 | } |
4366 | else | |
628fe4e4 | 4367 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
4368 | break; |
4369 | case bp_watchpoint: | |
4370 | case bp_hardware_watchpoint: | |
4371 | case bp_read_watchpoint: | |
4372 | case bp_access_watchpoint: | |
4373 | if (bs->stop) | |
4374 | { | |
4375 | if (bs->print) | |
628fe4e4 | 4376 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 4377 | else |
628fe4e4 | 4378 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
4379 | } |
4380 | else | |
628fe4e4 JK |
4381 | { |
4382 | /* There was a watchpoint, but we're not stopping. | |
4383 | This requires no further action. */ | |
4384 | } | |
c906108c SS |
4385 | break; |
4386 | case bp_longjmp: | |
186c406b | 4387 | case bp_exception: |
628fe4e4 | 4388 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
186c406b | 4389 | retval.is_longjmp = bptype == bp_longjmp; |
c906108c SS |
4390 | break; |
4391 | case bp_longjmp_resume: | |
186c406b | 4392 | case bp_exception_resume: |
628fe4e4 | 4393 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 4394 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
4395 | break; |
4396 | case bp_step_resume: | |
4397 | if (bs->stop) | |
628fe4e4 JK |
4398 | this_action = BPSTAT_WHAT_STEP_RESUME; |
4399 | else | |
c906108c | 4400 | { |
628fe4e4 JK |
4401 | /* It is for the wrong frame. */ |
4402 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 4403 | } |
c906108c | 4404 | break; |
2c03e5be PA |
4405 | case bp_hp_step_resume: |
4406 | if (bs->stop) | |
4407 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
4408 | else | |
4409 | { | |
4410 | /* It is for the wrong frame. */ | |
4411 | this_action = BPSTAT_WHAT_SINGLE; | |
4412 | } | |
4413 | break; | |
c906108c | 4414 | case bp_watchpoint_scope: |
c4093a6a | 4415 | case bp_thread_event: |
1900040c | 4416 | case bp_overlay_event: |
0fd8e87f | 4417 | case bp_longjmp_master: |
aa7d318d | 4418 | case bp_std_terminate_master: |
186c406b | 4419 | case bp_exception_master: |
628fe4e4 | 4420 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 4421 | break; |
ce78b96d | 4422 | case bp_catchpoint: |
c5aa993b JM |
4423 | if (bs->stop) |
4424 | { | |
4425 | if (bs->print) | |
628fe4e4 | 4426 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 4427 | else |
628fe4e4 | 4428 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
4429 | } |
4430 | else | |
628fe4e4 JK |
4431 | { |
4432 | /* There was a catchpoint, but we're not stopping. | |
4433 | This requires no further action. */ | |
4434 | } | |
4435 | break; | |
628fe4e4 JK |
4436 | case bp_jit_event: |
4437 | jit_event = 1; | |
4438 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 4439 | break; |
c906108c | 4440 | case bp_call_dummy: |
53a5351d JM |
4441 | /* Make sure the action is stop (silent or noisy), |
4442 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4443 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 4444 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
4445 | break; |
4446 | case bp_std_terminate: | |
4447 | /* Make sure the action is stop (silent or noisy), | |
4448 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 4449 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 4450 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 4451 | break; |
1042e4c0 | 4452 | case bp_tracepoint: |
7a697b8d | 4453 | case bp_fast_tracepoint: |
0fb4aa4b | 4454 | case bp_static_tracepoint: |
1042e4c0 SS |
4455 | /* Tracepoint hits should not be reported back to GDB, and |
4456 | if one got through somehow, it should have been filtered | |
4457 | out already. */ | |
4458 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 4459 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
4460 | break; |
4461 | case bp_gnu_ifunc_resolver: | |
4462 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
4463 | this_action = BPSTAT_WHAT_SINGLE; | |
4464 | break; | |
4465 | case bp_gnu_ifunc_resolver_return: | |
4466 | /* The breakpoint will be removed, execution will restart from the | |
4467 | PC of the former breakpoint. */ | |
4468 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
4469 | break; | |
628fe4e4 JK |
4470 | default: |
4471 | internal_error (__FILE__, __LINE__, | |
4472 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 4473 | } |
628fe4e4 JK |
4474 | |
4475 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 4476 | } |
628fe4e4 | 4477 | |
0e30163f JK |
4478 | /* These operations may affect the bs->breakpoint_at state so they are |
4479 | delayed after MAIN_ACTION is decided above. */ | |
4480 | ||
628fe4e4 JK |
4481 | if (shlib_event) |
4482 | { | |
4483 | if (debug_infrun) | |
4484 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_shlib_event\n"); | |
4485 | ||
4486 | /* Check for any newly added shared libraries if we're supposed | |
4487 | to be adding them automatically. */ | |
4488 | ||
4489 | /* Switch terminal for any messages produced by | |
4490 | breakpoint_re_set. */ | |
4491 | target_terminal_ours_for_output (); | |
4492 | ||
4493 | #ifdef SOLIB_ADD | |
4494 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
4495 | #else | |
4496 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
4497 | #endif | |
4498 | ||
4499 | target_terminal_inferior (); | |
4500 | } | |
4501 | ||
4502 | if (jit_event) | |
4503 | { | |
4504 | if (debug_infrun) | |
4505 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
4506 | ||
4507 | handle_jit_event (); | |
4508 | } | |
4509 | ||
0e30163f JK |
4510 | for (bs = bs_head; bs != NULL; bs = bs->next) |
4511 | { | |
4512 | struct breakpoint *b = bs->breakpoint_at; | |
4513 | ||
4514 | if (b == NULL) | |
4515 | continue; | |
4516 | switch (b->type) | |
4517 | { | |
4518 | case bp_gnu_ifunc_resolver: | |
4519 | gnu_ifunc_resolver_stop (b); | |
4520 | break; | |
4521 | case bp_gnu_ifunc_resolver_return: | |
4522 | gnu_ifunc_resolver_return_stop (b); | |
4523 | break; | |
4524 | } | |
4525 | } | |
4526 | ||
c906108c SS |
4527 | return retval; |
4528 | } | |
4529 | ||
4530 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
4531 | without hardware support). This isn't related to a specific bpstat, | |
4532 | just to things like whether watchpoints are set. */ | |
4533 | ||
c5aa993b | 4534 | int |
fba45db2 | 4535 | bpstat_should_step (void) |
c906108c SS |
4536 | { |
4537 | struct breakpoint *b; | |
cc59ec59 | 4538 | |
c906108c | 4539 | ALL_BREAKPOINTS (b) |
717a8278 | 4540 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 4541 | return 1; |
c906108c SS |
4542 | return 0; |
4543 | } | |
4544 | ||
67822962 PA |
4545 | int |
4546 | bpstat_causes_stop (bpstat bs) | |
4547 | { | |
4548 | for (; bs != NULL; bs = bs->next) | |
4549 | if (bs->stop) | |
4550 | return 1; | |
4551 | ||
4552 | return 0; | |
4553 | } | |
4554 | ||
c906108c | 4555 | \f |
c5aa993b | 4556 | |
170b53b2 UW |
4557 | /* Compute a string of spaces suitable to indent the next line |
4558 | so it starts at the position corresponding to the table column | |
4559 | named COL_NAME in the currently active table of UIOUT. */ | |
4560 | ||
4561 | static char * | |
4562 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
4563 | { | |
4564 | static char wrap_indent[80]; | |
4565 | int i, total_width, width, align; | |
4566 | char *text; | |
4567 | ||
4568 | total_width = 0; | |
4569 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
4570 | { | |
4571 | if (strcmp (text, col_name) == 0) | |
4572 | { | |
4573 | gdb_assert (total_width < sizeof wrap_indent); | |
4574 | memset (wrap_indent, ' ', total_width); | |
4575 | wrap_indent[total_width] = 0; | |
4576 | ||
4577 | return wrap_indent; | |
4578 | } | |
4579 | ||
4580 | total_width += width + 1; | |
4581 | } | |
4582 | ||
4583 | return NULL; | |
4584 | } | |
4585 | ||
859825b8 JK |
4586 | /* Print the LOC location out of the list of B->LOC locations. */ |
4587 | ||
170b53b2 UW |
4588 | static void |
4589 | print_breakpoint_location (struct breakpoint *b, | |
4590 | struct bp_location *loc) | |
0d381245 | 4591 | { |
79a45e25 | 4592 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
4593 | struct cleanup *old_chain = save_current_program_space (); |
4594 | ||
859825b8 JK |
4595 | if (loc != NULL && loc->shlib_disabled) |
4596 | loc = NULL; | |
4597 | ||
6c95b8df PA |
4598 | if (loc != NULL) |
4599 | set_current_program_space (loc->pspace); | |
4600 | ||
56435ebe TT |
4601 | if (b->display_canonical) |
4602 | ui_out_field_string (uiout, "what", b->addr_string); | |
f8eba3c6 | 4603 | else if (loc && loc->source_file) |
0d381245 VP |
4604 | { |
4605 | struct symbol *sym | |
4606 | = find_pc_sect_function (loc->address, loc->section); | |
4607 | if (sym) | |
4608 | { | |
4609 | ui_out_text (uiout, "in "); | |
4610 | ui_out_field_string (uiout, "func", | |
4611 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
4612 | ui_out_text (uiout, " "); |
4613 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
4614 | ui_out_text (uiout, "at "); | |
0d381245 | 4615 | } |
f8eba3c6 | 4616 | ui_out_field_string (uiout, "file", loc->source_file); |
0d381245 VP |
4617 | ui_out_text (uiout, ":"); |
4618 | ||
4619 | if (ui_out_is_mi_like_p (uiout)) | |
4620 | { | |
4621 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
4622 | char *fullname = symtab_to_fullname (sal.symtab); | |
4623 | ||
4624 | if (fullname) | |
4625 | ui_out_field_string (uiout, "fullname", fullname); | |
4626 | } | |
4627 | ||
f8eba3c6 | 4628 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 4629 | } |
859825b8 | 4630 | else if (loc) |
0d381245 | 4631 | { |
170b53b2 UW |
4632 | struct ui_stream *stb = ui_out_stream_new (uiout); |
4633 | struct cleanup *stb_chain = make_cleanup_ui_out_stream_delete (stb); | |
4634 | ||
22e722e1 DJ |
4635 | print_address_symbolic (loc->gdbarch, loc->address, stb->stream, |
4636 | demangle, ""); | |
0d381245 | 4637 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
4638 | |
4639 | do_cleanups (stb_chain); | |
0d381245 | 4640 | } |
859825b8 JK |
4641 | else |
4642 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df PA |
4643 | |
4644 | do_cleanups (old_chain); | |
0d381245 VP |
4645 | } |
4646 | ||
269b11a2 PA |
4647 | static const char * |
4648 | bptype_string (enum bptype type) | |
c906108c | 4649 | { |
c4093a6a JM |
4650 | struct ep_type_description |
4651 | { | |
4652 | enum bptype type; | |
4653 | char *description; | |
4654 | }; | |
4655 | static struct ep_type_description bptypes[] = | |
c906108c | 4656 | { |
c5aa993b JM |
4657 | {bp_none, "?deleted?"}, |
4658 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 4659 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
4660 | {bp_until, "until"}, |
4661 | {bp_finish, "finish"}, | |
4662 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 4663 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
4664 | {bp_read_watchpoint, "read watchpoint"}, |
4665 | {bp_access_watchpoint, "acc watchpoint"}, | |
4666 | {bp_longjmp, "longjmp"}, | |
4667 | {bp_longjmp_resume, "longjmp resume"}, | |
186c406b TT |
4668 | {bp_exception, "exception"}, |
4669 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 4670 | {bp_step_resume, "step resume"}, |
2c03e5be | 4671 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
4672 | {bp_watchpoint_scope, "watchpoint scope"}, |
4673 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 4674 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 4675 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 4676 | {bp_thread_event, "thread events"}, |
1900040c | 4677 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 4678 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 4679 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 4680 | {bp_exception_master, "exception master"}, |
ce78b96d | 4681 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 4682 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 4683 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 4684 | {bp_static_tracepoint, "static tracepoint"}, |
4efc6507 | 4685 | {bp_jit_event, "jit events"}, |
0e30163f JK |
4686 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
4687 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 4688 | }; |
269b11a2 PA |
4689 | |
4690 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
4691 | || ((int) type != bptypes[(int) type].type)) | |
4692 | internal_error (__FILE__, __LINE__, | |
4693 | _("bptypes table does not describe type #%d."), | |
4694 | (int) type); | |
4695 | ||
4696 | return bptypes[(int) type].description; | |
4697 | } | |
4698 | ||
4699 | /* Print B to gdb_stdout. */ | |
4700 | ||
4701 | static void | |
4702 | print_one_breakpoint_location (struct breakpoint *b, | |
4703 | struct bp_location *loc, | |
4704 | int loc_number, | |
4705 | struct bp_location **last_loc, | |
269b11a2 PA |
4706 | int allflag) |
4707 | { | |
4708 | struct command_line *l; | |
c2c6d25f | 4709 | static char bpenables[] = "nynny"; |
c906108c | 4710 | |
79a45e25 | 4711 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
4712 | int header_of_multiple = 0; |
4713 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
4714 | struct value_print_options opts; |
4715 | ||
4716 | get_user_print_options (&opts); | |
0d381245 VP |
4717 | |
4718 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
4719 | /* See comment in print_one_breakpoint concerning treatment of |
4720 | breakpoints with single disabled location. */ | |
0d381245 VP |
4721 | if (loc == NULL |
4722 | && (b->loc != NULL | |
4723 | && (b->loc->next != NULL || !b->loc->enabled))) | |
4724 | header_of_multiple = 1; | |
4725 | if (loc == NULL) | |
4726 | loc = b->loc; | |
4727 | ||
c4093a6a JM |
4728 | annotate_record (); |
4729 | ||
4730 | /* 1 */ | |
4731 | annotate_field (0); | |
0d381245 VP |
4732 | if (part_of_multiple) |
4733 | { | |
4734 | char *formatted; | |
0c6773c1 | 4735 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
4736 | ui_out_field_string (uiout, "number", formatted); |
4737 | xfree (formatted); | |
4738 | } | |
4739 | else | |
4740 | { | |
4741 | ui_out_field_int (uiout, "number", b->number); | |
4742 | } | |
c4093a6a JM |
4743 | |
4744 | /* 2 */ | |
4745 | annotate_field (1); | |
0d381245 VP |
4746 | if (part_of_multiple) |
4747 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
4748 | else |
4749 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
4750 | |
4751 | /* 3 */ | |
4752 | annotate_field (2); | |
0d381245 VP |
4753 | if (part_of_multiple) |
4754 | ui_out_field_skip (uiout, "disp"); | |
4755 | else | |
2cec12e5 | 4756 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 4757 | |
c4093a6a JM |
4758 | |
4759 | /* 4 */ | |
4760 | annotate_field (3); | |
0d381245 | 4761 | if (part_of_multiple) |
54e52265 | 4762 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 4763 | else |
4a64f543 MS |
4764 | ui_out_field_fmt (uiout, "enabled", "%c", |
4765 | bpenables[(int) b->enable_state]); | |
54e52265 | 4766 | ui_out_spaces (uiout, 2); |
0d381245 | 4767 | |
c4093a6a JM |
4768 | |
4769 | /* 5 and 6 */ | |
3086aeae | 4770 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 4771 | { |
4a64f543 MS |
4772 | /* Although the print_one can possibly print all locations, |
4773 | calling it here is not likely to get any nice result. So, | |
4774 | make sure there's just one location. */ | |
0d381245 | 4775 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 4776 | b->ops->print_one (b, last_loc); |
0d381245 | 4777 | } |
3086aeae DJ |
4778 | else |
4779 | switch (b->type) | |
4780 | { | |
4781 | case bp_none: | |
4782 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 4783 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 4784 | break; |
c906108c | 4785 | |
3086aeae DJ |
4786 | case bp_watchpoint: |
4787 | case bp_hardware_watchpoint: | |
4788 | case bp_read_watchpoint: | |
4789 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4790 | { |
4791 | struct watchpoint *w = (struct watchpoint *) b; | |
4792 | ||
4793 | /* Field 4, the address, is omitted (which makes the columns | |
4794 | not line up too nicely with the headers, but the effect | |
4795 | is relatively readable). */ | |
4796 | if (opts.addressprint) | |
4797 | ui_out_field_skip (uiout, "addr"); | |
4798 | annotate_field (5); | |
4799 | ui_out_field_string (uiout, "what", w->exp_string); | |
4800 | } | |
3086aeae DJ |
4801 | break; |
4802 | ||
3086aeae DJ |
4803 | case bp_breakpoint: |
4804 | case bp_hardware_breakpoint: | |
4805 | case bp_until: | |
4806 | case bp_finish: | |
4807 | case bp_longjmp: | |
4808 | case bp_longjmp_resume: | |
186c406b TT |
4809 | case bp_exception: |
4810 | case bp_exception_resume: | |
3086aeae | 4811 | case bp_step_resume: |
2c03e5be | 4812 | case bp_hp_step_resume: |
3086aeae DJ |
4813 | case bp_watchpoint_scope: |
4814 | case bp_call_dummy: | |
aa7d318d | 4815 | case bp_std_terminate: |
3086aeae DJ |
4816 | case bp_shlib_event: |
4817 | case bp_thread_event: | |
4818 | case bp_overlay_event: | |
0fd8e87f | 4819 | case bp_longjmp_master: |
aa7d318d | 4820 | case bp_std_terminate_master: |
186c406b | 4821 | case bp_exception_master: |
1042e4c0 | 4822 | case bp_tracepoint: |
7a697b8d | 4823 | case bp_fast_tracepoint: |
0fb4aa4b | 4824 | case bp_static_tracepoint: |
4efc6507 | 4825 | case bp_jit_event: |
0e30163f JK |
4826 | case bp_gnu_ifunc_resolver: |
4827 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 4828 | if (opts.addressprint) |
3086aeae DJ |
4829 | { |
4830 | annotate_field (4); | |
54e52265 | 4831 | if (header_of_multiple) |
0d381245 | 4832 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 4833 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 4834 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 4835 | else |
5af949e3 UW |
4836 | ui_out_field_core_addr (uiout, "addr", |
4837 | loc->gdbarch, loc->address); | |
3086aeae DJ |
4838 | } |
4839 | annotate_field (5); | |
0d381245 | 4840 | if (!header_of_multiple) |
170b53b2 | 4841 | print_breakpoint_location (b, loc); |
0d381245 | 4842 | if (b->loc) |
a6d9a66e | 4843 | *last_loc = b->loc; |
3086aeae DJ |
4844 | break; |
4845 | } | |
c906108c | 4846 | |
6c95b8df PA |
4847 | |
4848 | /* For backward compatibility, don't display inferiors unless there | |
4849 | are several. */ | |
4850 | if (loc != NULL | |
4851 | && !header_of_multiple | |
4852 | && (allflag | |
4853 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
4854 | && (number_of_program_spaces () > 1 | |
4855 | || number_of_inferiors () > 1) | |
4a64f543 MS |
4856 | /* LOC is for existing B, it cannot be in |
4857 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
4858 | && loc->owner->type != bp_catchpoint))) |
4859 | { | |
4860 | struct inferior *inf; | |
4861 | int first = 1; | |
4862 | ||
4863 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
4864 | { | |
4865 | if (inf->pspace == loc->pspace) | |
4866 | { | |
4867 | if (first) | |
4868 | { | |
4869 | first = 0; | |
4870 | ui_out_text (uiout, " inf "); | |
4871 | } | |
4872 | else | |
4873 | ui_out_text (uiout, ", "); | |
4874 | ui_out_text (uiout, plongest (inf->num)); | |
4875 | } | |
4876 | } | |
4877 | } | |
4878 | ||
4a306c9a | 4879 | if (!part_of_multiple) |
c4093a6a | 4880 | { |
4a306c9a JB |
4881 | if (b->thread != -1) |
4882 | { | |
4883 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 4884 | "stop only in" line a little further down. */ |
4a306c9a JB |
4885 | ui_out_text (uiout, " thread "); |
4886 | ui_out_field_int (uiout, "thread", b->thread); | |
4887 | } | |
4888 | else if (b->task != 0) | |
4889 | { | |
4890 | ui_out_text (uiout, " task "); | |
4891 | ui_out_field_int (uiout, "task", b->task); | |
4892 | } | |
c4093a6a | 4893 | } |
f1310107 | 4894 | |
8b93c638 | 4895 | ui_out_text (uiout, "\n"); |
f1310107 | 4896 | |
348d480f | 4897 | if (!part_of_multiple) |
f1310107 TJB |
4898 | b->ops->print_one_detail (b, uiout); |
4899 | ||
0d381245 | 4900 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
4901 | { |
4902 | annotate_field (6); | |
8b93c638 | 4903 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 4904 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 4905 | the frame ID. */ |
5af949e3 UW |
4906 | ui_out_field_core_addr (uiout, "frame", |
4907 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 4908 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
4909 | } |
4910 | ||
28010a5d | 4911 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
4912 | { |
4913 | annotate_field (7); | |
d77f58be | 4914 | if (is_tracepoint (b)) |
1042e4c0 SS |
4915 | ui_out_text (uiout, "\ttrace only if "); |
4916 | else | |
4917 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 JJ |
4918 | ui_out_field_string (uiout, "cond", b->cond_string); |
4919 | ui_out_text (uiout, "\n"); | |
4920 | } | |
4921 | ||
0d381245 | 4922 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 4923 | { |
4a64f543 | 4924 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4925 | ui_out_text (uiout, "\tstop only in thread "); |
4926 | ui_out_field_int (uiout, "thread", b->thread); | |
4927 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
4928 | } |
4929 | ||
63c715c6 | 4930 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 4931 | { |
4a64f543 | 4932 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
4933 | if (ep_is_catchpoint (b)) |
4934 | ui_out_text (uiout, "\tcatchpoint"); | |
f196051f SS |
4935 | else if (is_tracepoint (b)) |
4936 | ui_out_text (uiout, "\ttracepoint"); | |
8b93c638 JM |
4937 | else |
4938 | ui_out_text (uiout, "\tbreakpoint"); | |
4939 | ui_out_text (uiout, " already hit "); | |
4940 | ui_out_field_int (uiout, "times", b->hit_count); | |
4941 | if (b->hit_count == 1) | |
4942 | ui_out_text (uiout, " time\n"); | |
4943 | else | |
4944 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
4945 | } |
4946 | ||
4a64f543 MS |
4947 | /* Output the count also if it is zero, but only if this is mi. |
4948 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 4949 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 4950 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 4951 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 4952 | |
0d381245 | 4953 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
4954 | { |
4955 | annotate_field (8); | |
8b93c638 JM |
4956 | ui_out_text (uiout, "\tignore next "); |
4957 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
4958 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 4959 | } |
059fb39f | 4960 | |
f196051f SS |
4961 | if (!part_of_multiple && is_tracepoint (b)) |
4962 | { | |
4963 | struct tracepoint *tp = (struct tracepoint *) b; | |
4964 | ||
4965 | if (tp->traceframe_usage) | |
4966 | { | |
4967 | ui_out_text (uiout, "\ttrace buffer usage "); | |
4968 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
4969 | ui_out_text (uiout, " bytes\n"); | |
4970 | } | |
4971 | } | |
4972 | ||
9add0f1b | 4973 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 4974 | if (!part_of_multiple && l) |
c4093a6a | 4975 | { |
3b31d625 EZ |
4976 | struct cleanup *script_chain; |
4977 | ||
c4093a6a | 4978 | annotate_field (9); |
3b31d625 | 4979 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 4980 | print_command_lines (uiout, l, 4); |
3b31d625 | 4981 | do_cleanups (script_chain); |
c4093a6a | 4982 | } |
d24317b4 | 4983 | |
d9b3f62e | 4984 | if (is_tracepoint (b)) |
1042e4c0 | 4985 | { |
d9b3f62e PA |
4986 | struct tracepoint *t = (struct tracepoint *) b; |
4987 | ||
4988 | if (!part_of_multiple && t->pass_count) | |
4989 | { | |
4990 | annotate_field (10); | |
4991 | ui_out_text (uiout, "\tpass count "); | |
4992 | ui_out_field_int (uiout, "pass", t->pass_count); | |
4993 | ui_out_text (uiout, " \n"); | |
4994 | } | |
1042e4c0 SS |
4995 | } |
4996 | ||
d24317b4 VP |
4997 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
4998 | { | |
3a5c3e22 PA |
4999 | if (is_watchpoint (b)) |
5000 | { | |
5001 | struct watchpoint *w = (struct watchpoint *) b; | |
5002 | ||
5003 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
5004 | } | |
5005 | else if (b->addr_string) | |
d24317b4 | 5006 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 5007 | } |
c4093a6a | 5008 | } |
c5aa993b | 5009 | |
0d381245 VP |
5010 | static void |
5011 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 5012 | struct bp_location **last_loc, |
6c95b8df | 5013 | int allflag) |
0d381245 | 5014 | { |
8d3788bd | 5015 | struct cleanup *bkpt_chain; |
79a45e25 | 5016 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
5017 | |
5018 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
5019 | ||
12c5a436 | 5020 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 5021 | do_cleanups (bkpt_chain); |
0d381245 VP |
5022 | |
5023 | /* If this breakpoint has custom print function, | |
5024 | it's already printed. Otherwise, print individual | |
5025 | locations, if any. */ | |
5026 | if (b->ops == NULL || b->ops->print_one == NULL) | |
5027 | { | |
4a64f543 MS |
5028 | /* If breakpoint has a single location that is disabled, we |
5029 | print it as if it had several locations, since otherwise it's | |
5030 | hard to represent "breakpoint enabled, location disabled" | |
5031 | situation. | |
5032 | ||
5033 | Note that while hardware watchpoints have several locations | |
a3be7890 | 5034 | internally, that's not a property exposed to user. */ |
0d381245 | 5035 | if (b->loc |
a5606eee | 5036 | && !is_hardware_watchpoint (b) |
8d3788bd | 5037 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
5038 | { |
5039 | struct bp_location *loc; | |
5040 | int n = 1; | |
8d3788bd | 5041 | |
0d381245 | 5042 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
5043 | { |
5044 | struct cleanup *inner2 = | |
5045 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
5046 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
5047 | do_cleanups (inner2); | |
5048 | } | |
0d381245 VP |
5049 | } |
5050 | } | |
5051 | } | |
5052 | ||
a6d9a66e UW |
5053 | static int |
5054 | breakpoint_address_bits (struct breakpoint *b) | |
5055 | { | |
5056 | int print_address_bits = 0; | |
5057 | struct bp_location *loc; | |
5058 | ||
5059 | for (loc = b->loc; loc; loc = loc->next) | |
5060 | { | |
c7437ca6 PA |
5061 | int addr_bit; |
5062 | ||
5063 | /* Software watchpoints that aren't watching memory don't have | |
5064 | an address to print. */ | |
5065 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
5066 | continue; | |
5067 | ||
5068 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
5069 | if (addr_bit > print_address_bits) |
5070 | print_address_bits = addr_bit; | |
5071 | } | |
5072 | ||
5073 | return print_address_bits; | |
5074 | } | |
0d381245 | 5075 | |
c4093a6a JM |
5076 | struct captured_breakpoint_query_args |
5077 | { | |
5078 | int bnum; | |
5079 | }; | |
c5aa993b | 5080 | |
c4093a6a | 5081 | static int |
2b65245e | 5082 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
5083 | { |
5084 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 5085 | struct breakpoint *b; |
a6d9a66e | 5086 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 5087 | |
c4093a6a JM |
5088 | ALL_BREAKPOINTS (b) |
5089 | { | |
5090 | if (args->bnum == b->number) | |
c5aa993b | 5091 | { |
12c5a436 | 5092 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 5093 | return GDB_RC_OK; |
c5aa993b | 5094 | } |
c4093a6a JM |
5095 | } |
5096 | return GDB_RC_NONE; | |
5097 | } | |
c5aa993b | 5098 | |
c4093a6a | 5099 | enum gdb_rc |
4a64f543 MS |
5100 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
5101 | char **error_message) | |
c4093a6a JM |
5102 | { |
5103 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 5104 | |
c4093a6a JM |
5105 | args.bnum = bnum; |
5106 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 5107 | an error. */ |
b0b13bb4 DJ |
5108 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
5109 | error_message, RETURN_MASK_ALL) < 0) | |
5110 | return GDB_RC_FAIL; | |
5111 | else | |
5112 | return GDB_RC_OK; | |
c4093a6a | 5113 | } |
c5aa993b | 5114 | |
09d682a4 TT |
5115 | /* Return true if this breakpoint was set by the user, false if it is |
5116 | internal or momentary. */ | |
5117 | ||
5118 | int | |
5119 | user_breakpoint_p (struct breakpoint *b) | |
5120 | { | |
46c6471b | 5121 | return b->number > 0; |
09d682a4 TT |
5122 | } |
5123 | ||
7f3b0473 | 5124 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
5125 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
5126 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
5127 | FILTER is non-NULL, call it on each breakpoint and only include the | |
5128 | ones for which it returns non-zero. Return the total number of | |
5129 | breakpoints listed. */ | |
c906108c | 5130 | |
d77f58be | 5131 | static int |
e5a67952 | 5132 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 5133 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 5134 | { |
52f0bd74 | 5135 | struct breakpoint *b; |
a6d9a66e | 5136 | struct bp_location *last_loc = NULL; |
7f3b0473 | 5137 | int nr_printable_breakpoints; |
3b31d625 | 5138 | struct cleanup *bkpttbl_chain; |
79a45b7d | 5139 | struct value_print_options opts; |
a6d9a66e | 5140 | int print_address_bits = 0; |
269b11a2 | 5141 | int print_type_col_width = 14; |
79a45e25 | 5142 | struct ui_out *uiout = current_uiout; |
269b11a2 | 5143 | |
79a45b7d TT |
5144 | get_user_print_options (&opts); |
5145 | ||
4a64f543 MS |
5146 | /* Compute the number of rows in the table, as well as the size |
5147 | required for address fields. */ | |
7f3b0473 AC |
5148 | nr_printable_breakpoints = 0; |
5149 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
5150 | { |
5151 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5152 | if (filter && !filter (b)) | |
5153 | continue; | |
5154 | ||
5155 | /* If we have an "args" string, it is a list of breakpoints to | |
5156 | accept. Skip the others. */ | |
5157 | if (args != NULL && *args != '\0') | |
5158 | { | |
5159 | if (allflag && parse_and_eval_long (args) != b->number) | |
5160 | continue; | |
5161 | if (!allflag && !number_is_in_list (args, b->number)) | |
5162 | continue; | |
5163 | } | |
269b11a2 | 5164 | |
e5a67952 MS |
5165 | if (allflag || user_breakpoint_p (b)) |
5166 | { | |
5167 | int addr_bit, type_len; | |
a6d9a66e | 5168 | |
e5a67952 MS |
5169 | addr_bit = breakpoint_address_bits (b); |
5170 | if (addr_bit > print_address_bits) | |
5171 | print_address_bits = addr_bit; | |
269b11a2 | 5172 | |
e5a67952 MS |
5173 | type_len = strlen (bptype_string (b->type)); |
5174 | if (type_len > print_type_col_width) | |
5175 | print_type_col_width = type_len; | |
5176 | ||
5177 | nr_printable_breakpoints++; | |
5178 | } | |
5179 | } | |
7f3b0473 | 5180 | |
79a45b7d | 5181 | if (opts.addressprint) |
3b31d625 | 5182 | bkpttbl_chain |
3e43a32a MS |
5183 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
5184 | nr_printable_breakpoints, | |
3b31d625 | 5185 | "BreakpointTable"); |
8b93c638 | 5186 | else |
3b31d625 | 5187 | bkpttbl_chain |
3e43a32a MS |
5188 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
5189 | nr_printable_breakpoints, | |
3b31d625 | 5190 | "BreakpointTable"); |
8b93c638 | 5191 | |
7f3b0473 | 5192 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
5193 | annotate_breakpoints_headers (); |
5194 | if (nr_printable_breakpoints > 0) | |
5195 | annotate_field (0); | |
4a64f543 | 5196 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
5197 | if (nr_printable_breakpoints > 0) |
5198 | annotate_field (1); | |
269b11a2 | 5199 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 5200 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
5201 | if (nr_printable_breakpoints > 0) |
5202 | annotate_field (2); | |
4a64f543 | 5203 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
5204 | if (nr_printable_breakpoints > 0) |
5205 | annotate_field (3); | |
54e52265 | 5206 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 5207 | if (opts.addressprint) |
e5a67952 MS |
5208 | { |
5209 | if (nr_printable_breakpoints > 0) | |
5210 | annotate_field (4); | |
5211 | if (print_address_bits <= 32) | |
5212 | ui_out_table_header (uiout, 10, ui_left, | |
5213 | "addr", "Address"); /* 5 */ | |
5214 | else | |
5215 | ui_out_table_header (uiout, 18, ui_left, | |
5216 | "addr", "Address"); /* 5 */ | |
5217 | } | |
d7faa9e7 AC |
5218 | if (nr_printable_breakpoints > 0) |
5219 | annotate_field (5); | |
5220 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
5221 | ui_out_table_body (uiout); | |
5222 | if (nr_printable_breakpoints > 0) | |
5223 | annotate_breakpoints_table (); | |
7f3b0473 | 5224 | |
c4093a6a | 5225 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
5226 | { |
5227 | QUIT; | |
5228 | /* If we have a filter, only list the breakpoints it accepts. */ | |
5229 | if (filter && !filter (b)) | |
5230 | continue; | |
5231 | ||
5232 | /* If we have an "args" string, it is a list of breakpoints to | |
5233 | accept. Skip the others. */ | |
5234 | ||
5235 | if (args != NULL && *args != '\0') | |
5236 | { | |
5237 | if (allflag) /* maintenance info breakpoint */ | |
5238 | { | |
5239 | if (parse_and_eval_long (args) != b->number) | |
5240 | continue; | |
5241 | } | |
5242 | else /* all others */ | |
5243 | { | |
5244 | if (!number_is_in_list (args, b->number)) | |
5245 | continue; | |
5246 | } | |
5247 | } | |
5248 | /* We only print out user settable breakpoints unless the | |
5249 | allflag is set. */ | |
5250 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 5251 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
5252 | } |
5253 | ||
3b31d625 | 5254 | do_cleanups (bkpttbl_chain); |
698384cd | 5255 | |
7f3b0473 | 5256 | if (nr_printable_breakpoints == 0) |
c906108c | 5257 | { |
4a64f543 MS |
5258 | /* If there's a filter, let the caller decide how to report |
5259 | empty list. */ | |
d77f58be SS |
5260 | if (!filter) |
5261 | { | |
e5a67952 | 5262 | if (args == NULL || *args == '\0') |
d77f58be SS |
5263 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
5264 | else | |
4a64f543 | 5265 | ui_out_message (uiout, 0, |
e5a67952 MS |
5266 | "No breakpoint or watchpoint matching '%s'.\n", |
5267 | args); | |
d77f58be | 5268 | } |
c906108c SS |
5269 | } |
5270 | else | |
c4093a6a | 5271 | { |
a6d9a66e UW |
5272 | if (last_loc && !server_command) |
5273 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 5274 | } |
c906108c | 5275 | |
4a64f543 | 5276 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 5277 | there have been breakpoints? */ |
c906108c | 5278 | annotate_breakpoints_table_end (); |
d77f58be SS |
5279 | |
5280 | return nr_printable_breakpoints; | |
c906108c SS |
5281 | } |
5282 | ||
ad443146 SS |
5283 | /* Display the value of default-collect in a way that is generally |
5284 | compatible with the breakpoint list. */ | |
5285 | ||
5286 | static void | |
5287 | default_collect_info (void) | |
5288 | { | |
79a45e25 PA |
5289 | struct ui_out *uiout = current_uiout; |
5290 | ||
ad443146 SS |
5291 | /* If it has no value (which is frequently the case), say nothing; a |
5292 | message like "No default-collect." gets in user's face when it's | |
5293 | not wanted. */ | |
5294 | if (!*default_collect) | |
5295 | return; | |
5296 | ||
5297 | /* The following phrase lines up nicely with per-tracepoint collect | |
5298 | actions. */ | |
5299 | ui_out_text (uiout, "default collect "); | |
5300 | ui_out_field_string (uiout, "default-collect", default_collect); | |
5301 | ui_out_text (uiout, " \n"); | |
5302 | } | |
5303 | ||
c906108c | 5304 | static void |
e5a67952 | 5305 | breakpoints_info (char *args, int from_tty) |
c906108c | 5306 | { |
e5a67952 | 5307 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
5308 | |
5309 | default_collect_info (); | |
d77f58be SS |
5310 | } |
5311 | ||
5312 | static void | |
e5a67952 | 5313 | watchpoints_info (char *args, int from_tty) |
d77f58be | 5314 | { |
e5a67952 | 5315 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 5316 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
5317 | |
5318 | if (num_printed == 0) | |
5319 | { | |
e5a67952 | 5320 | if (args == NULL || *args == '\0') |
d77f58be SS |
5321 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
5322 | else | |
e5a67952 | 5323 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 5324 | } |
c906108c SS |
5325 | } |
5326 | ||
7a292a7a | 5327 | static void |
e5a67952 | 5328 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 5329 | { |
e5a67952 | 5330 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
5331 | |
5332 | default_collect_info (); | |
c906108c SS |
5333 | } |
5334 | ||
0d381245 | 5335 | static int |
714835d5 | 5336 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 5337 | struct program_space *pspace, |
714835d5 | 5338 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
5339 | { |
5340 | struct bp_location *bl = b->loc; | |
cc59ec59 | 5341 | |
0d381245 VP |
5342 | for (; bl; bl = bl->next) |
5343 | { | |
6c95b8df PA |
5344 | if (bl->pspace == pspace |
5345 | && bl->address == pc | |
0d381245 VP |
5346 | && (!overlay_debugging || bl->section == section)) |
5347 | return 1; | |
5348 | } | |
5349 | return 0; | |
5350 | } | |
5351 | ||
672f9b60 | 5352 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
5353 | concerns with logical breakpoints, so we match program spaces, not |
5354 | address spaces. */ | |
c906108c SS |
5355 | |
5356 | static void | |
6c95b8df PA |
5357 | describe_other_breakpoints (struct gdbarch *gdbarch, |
5358 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 5359 | struct obj_section *section, int thread) |
c906108c | 5360 | { |
52f0bd74 AC |
5361 | int others = 0; |
5362 | struct breakpoint *b; | |
c906108c SS |
5363 | |
5364 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
5365 | others += (user_breakpoint_p (b) |
5366 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
5367 | if (others > 0) |
5368 | { | |
a3f17187 AC |
5369 | if (others == 1) |
5370 | printf_filtered (_("Note: breakpoint ")); | |
5371 | else /* if (others == ???) */ | |
5372 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 5373 | ALL_BREAKPOINTS (b) |
672f9b60 | 5374 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
5375 | { |
5376 | others--; | |
5377 | printf_filtered ("%d", b->number); | |
5378 | if (b->thread == -1 && thread != -1) | |
5379 | printf_filtered (" (all threads)"); | |
5380 | else if (b->thread != -1) | |
5381 | printf_filtered (" (thread %d)", b->thread); | |
5382 | printf_filtered ("%s%s ", | |
059fb39f | 5383 | ((b->enable_state == bp_disabled |
f8eba3c6 | 5384 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
5385 | ? " (disabled)" |
5386 | : b->enable_state == bp_permanent | |
5387 | ? " (permanent)" | |
5388 | : ""), | |
5389 | (others > 1) ? "," | |
5390 | : ((others == 1) ? " and" : "")); | |
5391 | } | |
a3f17187 | 5392 | printf_filtered (_("also set at pc ")); |
5af949e3 | 5393 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
5394 | printf_filtered (".\n"); |
5395 | } | |
5396 | } | |
5397 | \f | |
c906108c | 5398 | |
e4f237da KB |
5399 | /* Return true iff it is meaningful to use the address member of |
5400 | BPT. For some breakpoint types, the address member is irrelevant | |
5401 | and it makes no sense to attempt to compare it to other addresses | |
5402 | (or use it for any other purpose either). | |
5403 | ||
4a64f543 MS |
5404 | More specifically, each of the following breakpoint types will |
5405 | always have a zero valued address and we don't want to mark | |
5406 | breakpoints of any of these types to be a duplicate of an actual | |
5407 | breakpoint at address zero: | |
e4f237da KB |
5408 | |
5409 | bp_watchpoint | |
2d134ed3 PA |
5410 | bp_catchpoint |
5411 | ||
5412 | */ | |
e4f237da KB |
5413 | |
5414 | static int | |
5415 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
5416 | { | |
5417 | enum bptype type = bpt->type; | |
5418 | ||
2d134ed3 PA |
5419 | return (type != bp_watchpoint && type != bp_catchpoint); |
5420 | } | |
5421 | ||
5422 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
5423 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
5424 | ||
5425 | static int | |
4a64f543 MS |
5426 | watchpoint_locations_match (struct bp_location *loc1, |
5427 | struct bp_location *loc2) | |
2d134ed3 | 5428 | { |
3a5c3e22 PA |
5429 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
5430 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
5431 | ||
5432 | /* Both of them must exist. */ | |
5433 | gdb_assert (w1 != NULL); | |
5434 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 5435 | |
4a64f543 MS |
5436 | /* If the target can evaluate the condition expression in hardware, |
5437 | then we we need to insert both watchpoints even if they are at | |
5438 | the same place. Otherwise the watchpoint will only trigger when | |
5439 | the condition of whichever watchpoint was inserted evaluates to | |
5440 | true, not giving a chance for GDB to check the condition of the | |
5441 | other watchpoint. */ | |
3a5c3e22 | 5442 | if ((w1->cond_exp |
4a64f543 MS |
5443 | && target_can_accel_watchpoint_condition (loc1->address, |
5444 | loc1->length, | |
0cf6dd15 | 5445 | loc1->watchpoint_type, |
3a5c3e22 PA |
5446 | w1->cond_exp)) |
5447 | || (w2->cond_exp | |
4a64f543 MS |
5448 | && target_can_accel_watchpoint_condition (loc2->address, |
5449 | loc2->length, | |
0cf6dd15 | 5450 | loc2->watchpoint_type, |
3a5c3e22 | 5451 | w2->cond_exp))) |
0cf6dd15 TJB |
5452 | return 0; |
5453 | ||
85d721b8 PA |
5454 | /* Note that this checks the owner's type, not the location's. In |
5455 | case the target does not support read watchpoints, but does | |
5456 | support access watchpoints, we'll have bp_read_watchpoint | |
5457 | watchpoints with hw_access locations. Those should be considered | |
5458 | duplicates of hw_read locations. The hw_read locations will | |
5459 | become hw_access locations later. */ | |
2d134ed3 PA |
5460 | return (loc1->owner->type == loc2->owner->type |
5461 | && loc1->pspace->aspace == loc2->pspace->aspace | |
5462 | && loc1->address == loc2->address | |
5463 | && loc1->length == loc2->length); | |
e4f237da KB |
5464 | } |
5465 | ||
6c95b8df PA |
5466 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
5467 | same breakpoint location. In most targets, this can only be true | |
5468 | if ASPACE1 matches ASPACE2. On targets that have global | |
5469 | breakpoints, the address space doesn't really matter. */ | |
5470 | ||
5471 | static int | |
5472 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
5473 | struct address_space *aspace2, CORE_ADDR addr2) | |
5474 | { | |
5475 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5476 | || aspace1 == aspace2) | |
5477 | && addr1 == addr2); | |
5478 | } | |
5479 | ||
f1310107 TJB |
5480 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
5481 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
5482 | matches ASPACE2. On targets that have global breakpoints, the address | |
5483 | space doesn't really matter. */ | |
5484 | ||
5485 | static int | |
5486 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
5487 | int len1, struct address_space *aspace2, | |
5488 | CORE_ADDR addr2) | |
5489 | { | |
5490 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
5491 | || aspace1 == aspace2) | |
5492 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
5493 | } | |
5494 | ||
5495 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
5496 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
5497 | matches the breakpoint's address space. On targets that have global | |
5498 | breakpoints, the address space doesn't really matter. */ | |
5499 | ||
5500 | static int | |
5501 | breakpoint_location_address_match (struct bp_location *bl, | |
5502 | struct address_space *aspace, | |
5503 | CORE_ADDR addr) | |
5504 | { | |
5505 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
5506 | aspace, addr) | |
5507 | || (bl->length | |
5508 | && breakpoint_address_match_range (bl->pspace->aspace, | |
5509 | bl->address, bl->length, | |
5510 | aspace, addr))); | |
5511 | } | |
5512 | ||
1e4d1764 YQ |
5513 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
5514 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
5515 | true, otherwise returns false. */ | |
5516 | ||
5517 | static int | |
5518 | tracepoint_locations_match (struct bp_location *loc1, | |
5519 | struct bp_location *loc2) | |
5520 | { | |
5521 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
5522 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
5523 | locations at the same address of different tracepoints are regarded as | |
5524 | different locations. */ | |
5525 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
5526 | else | |
5527 | return 0; | |
5528 | } | |
5529 | ||
2d134ed3 PA |
5530 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
5531 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
5532 | represent the same location. */ | |
5533 | ||
5534 | static int | |
4a64f543 MS |
5535 | breakpoint_locations_match (struct bp_location *loc1, |
5536 | struct bp_location *loc2) | |
2d134ed3 | 5537 | { |
2bdf28a0 JK |
5538 | int hw_point1, hw_point2; |
5539 | ||
5540 | /* Both of them must not be in moribund_locations. */ | |
5541 | gdb_assert (loc1->owner != NULL); | |
5542 | gdb_assert (loc2->owner != NULL); | |
5543 | ||
5544 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
5545 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
5546 | |
5547 | if (hw_point1 != hw_point2) | |
5548 | return 0; | |
5549 | else if (hw_point1) | |
5550 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
5551 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
5552 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 5553 | else |
f1310107 TJB |
5554 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
5555 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
5556 | loc2->pspace->aspace, loc2->address) | |
5557 | && loc1->length == loc2->length); | |
2d134ed3 PA |
5558 | } |
5559 | ||
76897487 KB |
5560 | static void |
5561 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
5562 | int bnum, int have_bnum) | |
5563 | { | |
f63fbe86 MS |
5564 | /* The longest string possibly returned by hex_string_custom |
5565 | is 50 chars. These must be at least that big for safety. */ | |
5566 | char astr1[64]; | |
5567 | char astr2[64]; | |
76897487 | 5568 | |
bb599908 PH |
5569 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
5570 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 5571 | if (have_bnum) |
8a3fe4f8 | 5572 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
5573 | bnum, astr1, astr2); |
5574 | else | |
8a3fe4f8 | 5575 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
5576 | } |
5577 | ||
4a64f543 MS |
5578 | /* Adjust a breakpoint's address to account for architectural |
5579 | constraints on breakpoint placement. Return the adjusted address. | |
5580 | Note: Very few targets require this kind of adjustment. For most | |
5581 | targets, this function is simply the identity function. */ | |
76897487 KB |
5582 | |
5583 | static CORE_ADDR | |
a6d9a66e UW |
5584 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
5585 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 5586 | { |
a6d9a66e | 5587 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
5588 | { |
5589 | /* Very few targets need any kind of breakpoint adjustment. */ | |
5590 | return bpaddr; | |
5591 | } | |
88f7da05 KB |
5592 | else if (bptype == bp_watchpoint |
5593 | || bptype == bp_hardware_watchpoint | |
5594 | || bptype == bp_read_watchpoint | |
5595 | || bptype == bp_access_watchpoint | |
fe798b75 | 5596 | || bptype == bp_catchpoint) |
88f7da05 KB |
5597 | { |
5598 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
5599 | have their addresses modified. */ | |
5600 | return bpaddr; | |
5601 | } | |
76897487 KB |
5602 | else |
5603 | { | |
5604 | CORE_ADDR adjusted_bpaddr; | |
5605 | ||
5606 | /* Some targets have architectural constraints on the placement | |
5607 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 5608 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
5609 | |
5610 | /* An adjusted breakpoint address can significantly alter | |
5611 | a user's expectations. Print a warning if an adjustment | |
5612 | is required. */ | |
5613 | if (adjusted_bpaddr != bpaddr) | |
5614 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
5615 | ||
5616 | return adjusted_bpaddr; | |
5617 | } | |
5618 | } | |
5619 | ||
28010a5d PA |
5620 | void |
5621 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
5622 | struct breakpoint *owner) | |
7cc221ef | 5623 | { |
7cc221ef DJ |
5624 | memset (loc, 0, sizeof (*loc)); |
5625 | ||
348d480f PA |
5626 | gdb_assert (ops != NULL); |
5627 | ||
28010a5d PA |
5628 | loc->ops = ops; |
5629 | loc->owner = owner; | |
511a6cd4 | 5630 | loc->cond = NULL; |
0d381245 VP |
5631 | loc->shlib_disabled = 0; |
5632 | loc->enabled = 1; | |
e049a4b5 | 5633 | |
28010a5d | 5634 | switch (owner->type) |
e049a4b5 DJ |
5635 | { |
5636 | case bp_breakpoint: | |
5637 | case bp_until: | |
5638 | case bp_finish: | |
5639 | case bp_longjmp: | |
5640 | case bp_longjmp_resume: | |
186c406b TT |
5641 | case bp_exception: |
5642 | case bp_exception_resume: | |
e049a4b5 | 5643 | case bp_step_resume: |
2c03e5be | 5644 | case bp_hp_step_resume: |
e049a4b5 DJ |
5645 | case bp_watchpoint_scope: |
5646 | case bp_call_dummy: | |
aa7d318d | 5647 | case bp_std_terminate: |
e049a4b5 DJ |
5648 | case bp_shlib_event: |
5649 | case bp_thread_event: | |
5650 | case bp_overlay_event: | |
4efc6507 | 5651 | case bp_jit_event: |
0fd8e87f | 5652 | case bp_longjmp_master: |
aa7d318d | 5653 | case bp_std_terminate_master: |
186c406b | 5654 | case bp_exception_master: |
0e30163f JK |
5655 | case bp_gnu_ifunc_resolver: |
5656 | case bp_gnu_ifunc_resolver_return: | |
e049a4b5 DJ |
5657 | loc->loc_type = bp_loc_software_breakpoint; |
5658 | break; | |
5659 | case bp_hardware_breakpoint: | |
5660 | loc->loc_type = bp_loc_hardware_breakpoint; | |
5661 | break; | |
5662 | case bp_hardware_watchpoint: | |
5663 | case bp_read_watchpoint: | |
5664 | case bp_access_watchpoint: | |
5665 | loc->loc_type = bp_loc_hardware_watchpoint; | |
5666 | break; | |
5667 | case bp_watchpoint: | |
ce78b96d | 5668 | case bp_catchpoint: |
15c3d785 PA |
5669 | case bp_tracepoint: |
5670 | case bp_fast_tracepoint: | |
0fb4aa4b | 5671 | case bp_static_tracepoint: |
e049a4b5 DJ |
5672 | loc->loc_type = bp_loc_other; |
5673 | break; | |
5674 | default: | |
e2e0b3e5 | 5675 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
5676 | } |
5677 | ||
f431efe5 | 5678 | loc->refc = 1; |
28010a5d PA |
5679 | } |
5680 | ||
5681 | /* Allocate a struct bp_location. */ | |
5682 | ||
5683 | static struct bp_location * | |
5684 | allocate_bp_location (struct breakpoint *bpt) | |
5685 | { | |
348d480f PA |
5686 | return bpt->ops->allocate_location (bpt); |
5687 | } | |
7cc221ef | 5688 | |
f431efe5 PA |
5689 | static void |
5690 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 5691 | { |
348d480f | 5692 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
5693 | xfree (loc); |
5694 | } | |
5695 | ||
f431efe5 PA |
5696 | /* Increment reference count. */ |
5697 | ||
5698 | static void | |
5699 | incref_bp_location (struct bp_location *bl) | |
5700 | { | |
5701 | ++bl->refc; | |
5702 | } | |
5703 | ||
5704 | /* Decrement reference count. If the reference count reaches 0, | |
5705 | destroy the bp_location. Sets *BLP to NULL. */ | |
5706 | ||
5707 | static void | |
5708 | decref_bp_location (struct bp_location **blp) | |
5709 | { | |
0807b50c PA |
5710 | gdb_assert ((*blp)->refc > 0); |
5711 | ||
f431efe5 PA |
5712 | if (--(*blp)->refc == 0) |
5713 | free_bp_location (*blp); | |
5714 | *blp = NULL; | |
5715 | } | |
5716 | ||
346774a9 | 5717 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 5718 | |
346774a9 PA |
5719 | static void |
5720 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 5721 | { |
346774a9 | 5722 | struct breakpoint *b1; |
c906108c | 5723 | |
346774a9 PA |
5724 | /* Add this breakpoint to the end of the chain so that a list of |
5725 | breakpoints will come out in order of increasing numbers. */ | |
5726 | ||
5727 | b1 = breakpoint_chain; | |
5728 | if (b1 == 0) | |
5729 | breakpoint_chain = b; | |
5730 | else | |
5731 | { | |
5732 | while (b1->next) | |
5733 | b1 = b1->next; | |
5734 | b1->next = b; | |
5735 | } | |
5736 | } | |
5737 | ||
5738 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
5739 | ||
5740 | static void | |
5741 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
5742 | struct gdbarch *gdbarch, | |
28010a5d | 5743 | enum bptype bptype, |
c0a91b2b | 5744 | const struct breakpoint_ops *ops) |
346774a9 | 5745 | { |
c906108c | 5746 | memset (b, 0, sizeof (*b)); |
2219d63c | 5747 | |
348d480f PA |
5748 | gdb_assert (ops != NULL); |
5749 | ||
28010a5d | 5750 | b->ops = ops; |
4d28f7a8 | 5751 | b->type = bptype; |
a6d9a66e | 5752 | b->gdbarch = gdbarch; |
c906108c SS |
5753 | b->language = current_language->la_language; |
5754 | b->input_radix = input_radix; | |
5755 | b->thread = -1; | |
b5de0fa7 | 5756 | b->enable_state = bp_enabled; |
c906108c SS |
5757 | b->next = 0; |
5758 | b->silent = 0; | |
5759 | b->ignore_count = 0; | |
5760 | b->commands = NULL; | |
818dd999 | 5761 | b->frame_id = null_frame_id; |
0d381245 | 5762 | b->condition_not_parsed = 0; |
84f4c1fe | 5763 | b->py_bp_object = NULL; |
d0fb5eae | 5764 | b->related_breakpoint = b; |
346774a9 PA |
5765 | } |
5766 | ||
5767 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
5768 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
5769 | |
5770 | static struct breakpoint * | |
5771 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 5772 | enum bptype bptype, |
c0a91b2b | 5773 | const struct breakpoint_ops *ops) |
346774a9 PA |
5774 | { |
5775 | struct breakpoint *b = XNEW (struct breakpoint); | |
5776 | ||
348d480f | 5777 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 5778 | add_to_breakpoint_chain (b); |
0d381245 VP |
5779 | return b; |
5780 | } | |
5781 | ||
0e30163f JK |
5782 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
5783 | resolutions should be made as the user specified the location explicitly | |
5784 | enough. */ | |
5785 | ||
0d381245 | 5786 | static void |
0e30163f | 5787 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 5788 | { |
2bdf28a0 JK |
5789 | gdb_assert (loc->owner != NULL); |
5790 | ||
0d381245 | 5791 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 5792 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 5793 | || is_tracepoint (loc->owner)) |
0d381245 | 5794 | { |
0e30163f JK |
5795 | int is_gnu_ifunc; |
5796 | ||
5797 | find_pc_partial_function_gnu_ifunc (loc->address, &loc->function_name, | |
5798 | NULL, NULL, &is_gnu_ifunc); | |
5799 | ||
5800 | if (is_gnu_ifunc && !explicit_loc) | |
5801 | { | |
5802 | struct breakpoint *b = loc->owner; | |
5803 | ||
5804 | gdb_assert (loc->pspace == current_program_space); | |
5805 | if (gnu_ifunc_resolve_name (loc->function_name, | |
5806 | &loc->requested_address)) | |
5807 | { | |
5808 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
5809 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
5810 | loc->requested_address, | |
5811 | b->type); | |
5812 | } | |
5813 | else if (b->type == bp_breakpoint && b->loc == loc | |
5814 | && loc->next == NULL && b->related_breakpoint == b) | |
5815 | { | |
5816 | /* Create only the whole new breakpoint of this type but do not | |
5817 | mess more complicated breakpoints with multiple locations. */ | |
5818 | b->type = bp_gnu_ifunc_resolver; | |
5819 | } | |
5820 | } | |
5821 | ||
0d381245 VP |
5822 | if (loc->function_name) |
5823 | loc->function_name = xstrdup (loc->function_name); | |
5824 | } | |
5825 | } | |
5826 | ||
a6d9a66e | 5827 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 5828 | struct gdbarch * |
a6d9a66e UW |
5829 | get_sal_arch (struct symtab_and_line sal) |
5830 | { | |
5831 | if (sal.section) | |
5832 | return get_objfile_arch (sal.section->objfile); | |
5833 | if (sal.symtab) | |
5834 | return get_objfile_arch (sal.symtab->objfile); | |
5835 | ||
5836 | return NULL; | |
5837 | } | |
5838 | ||
346774a9 PA |
5839 | /* Low level routine for partially initializing a breakpoint of type |
5840 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 5841 | file name, and line number are provided by SAL. |
0d381245 VP |
5842 | |
5843 | It is expected that the caller will complete the initialization of | |
5844 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 5845 | information regarding the creation of a new breakpoint. */ |
0d381245 | 5846 | |
346774a9 PA |
5847 | static void |
5848 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 5849 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 5850 | const struct breakpoint_ops *ops) |
0d381245 | 5851 | { |
28010a5d | 5852 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 5853 | |
3742cc8b | 5854 | add_location_to_breakpoint (b, &sal); |
0d381245 | 5855 | |
6c95b8df PA |
5856 | if (bptype != bp_catchpoint) |
5857 | gdb_assert (sal.pspace != NULL); | |
5858 | ||
f8eba3c6 TT |
5859 | /* Store the program space that was used to set the breakpoint, |
5860 | except for ordinary breakpoints, which are independent of the | |
5861 | program space. */ | |
5862 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
5863 | b->pspace = sal.pspace; | |
0d381245 | 5864 | |
c906108c | 5865 | breakpoints_changed (); |
346774a9 | 5866 | } |
c906108c | 5867 | |
346774a9 PA |
5868 | /* set_raw_breakpoint is a low level routine for allocating and |
5869 | partially initializing a breakpoint of type BPTYPE. The newly | |
5870 | created breakpoint's address, section, source file name, and line | |
5871 | number are provided by SAL. The newly created and partially | |
5872 | initialized breakpoint is added to the breakpoint chain and | |
5873 | is also returned as the value of this function. | |
5874 | ||
5875 | It is expected that the caller will complete the initialization of | |
5876 | the newly created breakpoint struct as well as output any status | |
5877 | information regarding the creation of a new breakpoint. In | |
5878 | particular, set_raw_breakpoint does NOT set the breakpoint | |
5879 | number! Care should be taken to not allow an error to occur | |
5880 | prior to completing the initialization of the breakpoint. If this | |
5881 | should happen, a bogus breakpoint will be left on the chain. */ | |
5882 | ||
5883 | struct breakpoint * | |
5884 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 5885 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 5886 | const struct breakpoint_ops *ops) |
346774a9 PA |
5887 | { |
5888 | struct breakpoint *b = XNEW (struct breakpoint); | |
5889 | ||
348d480f | 5890 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 5891 | add_to_breakpoint_chain (b); |
c906108c SS |
5892 | return b; |
5893 | } | |
5894 | ||
c2c6d25f JM |
5895 | |
5896 | /* Note that the breakpoint object B describes a permanent breakpoint | |
5897 | instruction, hard-wired into the inferior's code. */ | |
5898 | void | |
5899 | make_breakpoint_permanent (struct breakpoint *b) | |
5900 | { | |
0d381245 | 5901 | struct bp_location *bl; |
cc59ec59 | 5902 | |
b5de0fa7 | 5903 | b->enable_state = bp_permanent; |
c2c6d25f | 5904 | |
4a64f543 MS |
5905 | /* By definition, permanent breakpoints are already present in the |
5906 | code. Mark all locations as inserted. For now, | |
5907 | make_breakpoint_permanent is called in just one place, so it's | |
5908 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 5909 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
5910 | for (bl = b->loc; bl; bl = bl->next) |
5911 | bl->inserted = 1; | |
c2c6d25f JM |
5912 | } |
5913 | ||
53a5351d | 5914 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
5915 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
5916 | initiated the operation. */ | |
c906108c SS |
5917 | |
5918 | void | |
186c406b | 5919 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 5920 | { |
35df4500 | 5921 | struct breakpoint *b, *b_tmp; |
186c406b | 5922 | int thread = tp->num; |
0fd8e87f UW |
5923 | |
5924 | /* To avoid having to rescan all objfile symbols at every step, | |
5925 | we maintain a list of continually-inserted but always disabled | |
5926 | longjmp "master" breakpoints. Here, we simply create momentary | |
5927 | clones of those and enable them for the requested thread. */ | |
35df4500 | 5928 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 5929 | if (b->pspace == current_program_space |
186c406b TT |
5930 | && (b->type == bp_longjmp_master |
5931 | || b->type == bp_exception_master)) | |
0fd8e87f | 5932 | { |
06edf0c0 PA |
5933 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
5934 | struct breakpoint *clone; | |
cc59ec59 | 5935 | |
06edf0c0 PA |
5936 | clone = momentary_breakpoint_from_master (b, type, |
5937 | &momentary_breakpoint_ops); | |
0fd8e87f UW |
5938 | clone->thread = thread; |
5939 | } | |
186c406b TT |
5940 | |
5941 | tp->initiating_frame = frame; | |
c906108c SS |
5942 | } |
5943 | ||
611c83ae | 5944 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 5945 | void |
611c83ae | 5946 | delete_longjmp_breakpoint (int thread) |
c906108c | 5947 | { |
35df4500 | 5948 | struct breakpoint *b, *b_tmp; |
c906108c | 5949 | |
35df4500 | 5950 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 5951 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
5952 | { |
5953 | if (b->thread == thread) | |
5954 | delete_breakpoint (b); | |
5955 | } | |
c906108c SS |
5956 | } |
5957 | ||
1900040c MS |
5958 | void |
5959 | enable_overlay_breakpoints (void) | |
5960 | { | |
52f0bd74 | 5961 | struct breakpoint *b; |
1900040c MS |
5962 | |
5963 | ALL_BREAKPOINTS (b) | |
5964 | if (b->type == bp_overlay_event) | |
5965 | { | |
5966 | b->enable_state = bp_enabled; | |
b60e7edf | 5967 | update_global_location_list (1); |
c02f5703 | 5968 | overlay_events_enabled = 1; |
1900040c MS |
5969 | } |
5970 | } | |
5971 | ||
5972 | void | |
5973 | disable_overlay_breakpoints (void) | |
5974 | { | |
52f0bd74 | 5975 | struct breakpoint *b; |
1900040c MS |
5976 | |
5977 | ALL_BREAKPOINTS (b) | |
5978 | if (b->type == bp_overlay_event) | |
5979 | { | |
5980 | b->enable_state = bp_disabled; | |
b60e7edf | 5981 | update_global_location_list (0); |
c02f5703 | 5982 | overlay_events_enabled = 0; |
1900040c MS |
5983 | } |
5984 | } | |
5985 | ||
aa7d318d TT |
5986 | /* Set an active std::terminate breakpoint for each std::terminate |
5987 | master breakpoint. */ | |
5988 | void | |
5989 | set_std_terminate_breakpoint (void) | |
5990 | { | |
35df4500 | 5991 | struct breakpoint *b, *b_tmp; |
aa7d318d | 5992 | |
35df4500 | 5993 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
5994 | if (b->pspace == current_program_space |
5995 | && b->type == bp_std_terminate_master) | |
5996 | { | |
06edf0c0 PA |
5997 | momentary_breakpoint_from_master (b, bp_std_terminate, |
5998 | &momentary_breakpoint_ops); | |
aa7d318d TT |
5999 | } |
6000 | } | |
6001 | ||
6002 | /* Delete all the std::terminate breakpoints. */ | |
6003 | void | |
6004 | delete_std_terminate_breakpoint (void) | |
6005 | { | |
35df4500 | 6006 | struct breakpoint *b, *b_tmp; |
aa7d318d | 6007 | |
35df4500 | 6008 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
6009 | if (b->type == bp_std_terminate) |
6010 | delete_breakpoint (b); | |
6011 | } | |
6012 | ||
c4093a6a | 6013 | struct breakpoint * |
a6d9a66e | 6014 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
6015 | { |
6016 | struct breakpoint *b; | |
c4093a6a | 6017 | |
06edf0c0 PA |
6018 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
6019 | &internal_breakpoint_ops); | |
6020 | ||
b5de0fa7 | 6021 | b->enable_state = bp_enabled; |
c4093a6a | 6022 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
6023 | b->addr_string |
6024 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 6025 | |
b60e7edf | 6026 | update_global_location_list_nothrow (1); |
74960c60 | 6027 | |
c4093a6a JM |
6028 | return b; |
6029 | } | |
6030 | ||
6031 | void | |
6032 | remove_thread_event_breakpoints (void) | |
6033 | { | |
35df4500 | 6034 | struct breakpoint *b, *b_tmp; |
c4093a6a | 6035 | |
35df4500 | 6036 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6037 | if (b->type == bp_thread_event |
6038 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
6039 | delete_breakpoint (b); |
6040 | } | |
6041 | ||
0101ce28 JJ |
6042 | struct lang_and_radix |
6043 | { | |
6044 | enum language lang; | |
6045 | int radix; | |
6046 | }; | |
6047 | ||
4efc6507 DE |
6048 | /* Create a breakpoint for JIT code registration and unregistration. */ |
6049 | ||
6050 | struct breakpoint * | |
6051 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
6052 | { | |
6053 | struct breakpoint *b; | |
6054 | ||
06edf0c0 PA |
6055 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
6056 | &internal_breakpoint_ops); | |
4efc6507 DE |
6057 | update_global_location_list_nothrow (1); |
6058 | return b; | |
6059 | } | |
0101ce28 | 6060 | |
03673fc7 PP |
6061 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
6062 | ||
6063 | void | |
6064 | remove_jit_event_breakpoints (void) | |
6065 | { | |
6066 | struct breakpoint *b, *b_tmp; | |
6067 | ||
6068 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
6069 | if (b->type == bp_jit_event | |
6070 | && b->loc->pspace == current_program_space) | |
6071 | delete_breakpoint (b); | |
6072 | } | |
6073 | ||
cae688ec JJ |
6074 | void |
6075 | remove_solib_event_breakpoints (void) | |
6076 | { | |
35df4500 | 6077 | struct breakpoint *b, *b_tmp; |
cae688ec | 6078 | |
35df4500 | 6079 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
6080 | if (b->type == bp_shlib_event |
6081 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
6082 | delete_breakpoint (b); |
6083 | } | |
6084 | ||
6085 | struct breakpoint * | |
a6d9a66e | 6086 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
6087 | { |
6088 | struct breakpoint *b; | |
6089 | ||
06edf0c0 PA |
6090 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
6091 | &internal_breakpoint_ops); | |
b60e7edf | 6092 | update_global_location_list_nothrow (1); |
cae688ec JJ |
6093 | return b; |
6094 | } | |
6095 | ||
6096 | /* Disable any breakpoints that are on code in shared libraries. Only | |
6097 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
6098 | ||
6099 | void | |
cb851954 | 6100 | disable_breakpoints_in_shlibs (void) |
cae688ec | 6101 | { |
876fa593 | 6102 | struct bp_location *loc, **locp_tmp; |
cae688ec | 6103 | |
876fa593 | 6104 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 6105 | { |
2bdf28a0 | 6106 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6107 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 6108 | |
4a64f543 MS |
6109 | /* We apply the check to all breakpoints, including disabled for |
6110 | those with loc->duplicate set. This is so that when breakpoint | |
6111 | becomes enabled, or the duplicate is removed, gdb will try to | |
6112 | insert all breakpoints. If we don't set shlib_disabled here, | |
6113 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 6114 | if (((b->type == bp_breakpoint) |
508ccb1f | 6115 | || (b->type == bp_jit_event) |
1042e4c0 | 6116 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 6117 | || (is_tracepoint (b))) |
6c95b8df | 6118 | && loc->pspace == current_program_space |
0d381245 | 6119 | && !loc->shlib_disabled |
a77053c2 | 6120 | #ifdef PC_SOLIB |
0d381245 | 6121 | && PC_SOLIB (loc->address) |
a77053c2 | 6122 | #else |
6c95b8df | 6123 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
6124 | #endif |
6125 | ) | |
0d381245 VP |
6126 | { |
6127 | loc->shlib_disabled = 1; | |
6128 | } | |
cae688ec JJ |
6129 | } |
6130 | } | |
6131 | ||
1e4d1764 YQ |
6132 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
6133 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 6134 | disabled. */ |
84acb35a | 6135 | |
75149521 | 6136 | static void |
84acb35a JJ |
6137 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
6138 | { | |
876fa593 | 6139 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
6140 | int disabled_shlib_breaks = 0; |
6141 | ||
c86cf029 VP |
6142 | /* SunOS a.out shared libraries are always mapped, so do not |
6143 | disable breakpoints; they will only be reported as unloaded | |
6144 | through clear_solib when GDB discards its shared library | |
6145 | list. See clear_solib for more information. */ | |
6146 | if (exec_bfd != NULL | |
6147 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
6148 | return; | |
6149 | ||
876fa593 | 6150 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 6151 | { |
2bdf28a0 | 6152 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 6153 | struct breakpoint *b = loc->owner; |
cc59ec59 | 6154 | |
1e4d1764 | 6155 | if (solib->pspace == loc->pspace |
e2dd7057 | 6156 | && !loc->shlib_disabled |
1e4d1764 YQ |
6157 | && (((b->type == bp_breakpoint |
6158 | || b->type == bp_jit_event | |
6159 | || b->type == bp_hardware_breakpoint) | |
6160 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
6161 | || loc->loc_type == bp_loc_software_breakpoint)) | |
6162 | || is_tracepoint (b)) | |
e2dd7057 | 6163 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 6164 | { |
e2dd7057 PP |
6165 | loc->shlib_disabled = 1; |
6166 | /* At this point, we cannot rely on remove_breakpoint | |
6167 | succeeding so we must mark the breakpoint as not inserted | |
6168 | to prevent future errors occurring in remove_breakpoints. */ | |
6169 | loc->inserted = 0; | |
8d3788bd VP |
6170 | |
6171 | /* This may cause duplicate notifications for the same breakpoint. */ | |
6172 | observer_notify_breakpoint_modified (b); | |
6173 | ||
e2dd7057 PP |
6174 | if (!disabled_shlib_breaks) |
6175 | { | |
6176 | target_terminal_ours_for_output (); | |
3e43a32a MS |
6177 | warning (_("Temporarily disabling breakpoints " |
6178 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 6179 | solib->so_name); |
84acb35a | 6180 | } |
e2dd7057 | 6181 | disabled_shlib_breaks = 1; |
84acb35a JJ |
6182 | } |
6183 | } | |
84acb35a JJ |
6184 | } |
6185 | ||
ce78b96d JB |
6186 | /* FORK & VFORK catchpoints. */ |
6187 | ||
e29a4733 PA |
6188 | /* An instance of this type is used to represent a fork or vfork |
6189 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
6190 | class; users downcast to "struct breakpoint *" when needed. A | |
6191 | breakpoint is really of this type iff its ops pointer points to | |
6192 | CATCH_FORK_BREAKPOINT_OPS. */ | |
6193 | ||
6194 | struct fork_catchpoint | |
6195 | { | |
6196 | /* The base class. */ | |
6197 | struct breakpoint base; | |
6198 | ||
6199 | /* Process id of a child process whose forking triggered this | |
6200 | catchpoint. This field is only valid immediately after this | |
6201 | catchpoint has triggered. */ | |
6202 | ptid_t forked_inferior_pid; | |
6203 | }; | |
6204 | ||
4a64f543 MS |
6205 | /* Implement the "insert" breakpoint_ops method for fork |
6206 | catchpoints. */ | |
ce78b96d | 6207 | |
77b06cd7 TJB |
6208 | static int |
6209 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 6210 | { |
77b06cd7 | 6211 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6212 | } |
6213 | ||
4a64f543 MS |
6214 | /* Implement the "remove" breakpoint_ops method for fork |
6215 | catchpoints. */ | |
ce78b96d JB |
6216 | |
6217 | static int | |
77b06cd7 | 6218 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
6219 | { |
6220 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
6221 | } | |
6222 | ||
6223 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
6224 | catchpoints. */ | |
6225 | ||
6226 | static int | |
f1310107 TJB |
6227 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
6228 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6229 | { |
e29a4733 PA |
6230 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
6231 | ||
6232 | return inferior_has_forked (inferior_ptid, &c->forked_inferior_pid); | |
ce78b96d JB |
6233 | } |
6234 | ||
4a64f543 MS |
6235 | /* Implement the "print_it" breakpoint_ops method for fork |
6236 | catchpoints. */ | |
ce78b96d JB |
6237 | |
6238 | static enum print_stop_action | |
348d480f | 6239 | print_it_catch_fork (bpstat bs) |
ce78b96d | 6240 | { |
36dfb11c | 6241 | struct ui_out *uiout = current_uiout; |
348d480f PA |
6242 | struct breakpoint *b = bs->breakpoint_at; |
6243 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 6244 | |
ce78b96d | 6245 | annotate_catchpoint (b->number); |
36dfb11c TT |
6246 | if (b->disposition == disp_del) |
6247 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
6248 | else | |
6249 | ui_out_text (uiout, "\nCatchpoint "); | |
6250 | if (ui_out_is_mi_like_p (uiout)) | |
6251 | { | |
6252 | ui_out_field_string (uiout, "reason", | |
6253 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
6254 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6255 | } | |
6256 | ui_out_field_int (uiout, "bkptno", b->number); | |
6257 | ui_out_text (uiout, " (forked process "); | |
6258 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
6259 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
6260 | return PRINT_SRC_AND_LOC; |
6261 | } | |
6262 | ||
4a64f543 MS |
6263 | /* Implement the "print_one" breakpoint_ops method for fork |
6264 | catchpoints. */ | |
ce78b96d JB |
6265 | |
6266 | static void | |
a6d9a66e | 6267 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6268 | { |
e29a4733 | 6269 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 6270 | struct value_print_options opts; |
79a45e25 | 6271 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
6272 | |
6273 | get_user_print_options (&opts); | |
6274 | ||
4a64f543 MS |
6275 | /* Field 4, the address, is omitted (which makes the columns not |
6276 | line up too nicely with the headers, but the effect is relatively | |
6277 | readable). */ | |
79a45b7d | 6278 | if (opts.addressprint) |
ce78b96d JB |
6279 | ui_out_field_skip (uiout, "addr"); |
6280 | annotate_field (5); | |
6281 | ui_out_text (uiout, "fork"); | |
e29a4733 | 6282 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
6283 | { |
6284 | ui_out_text (uiout, ", process "); | |
6285 | ui_out_field_int (uiout, "what", | |
e29a4733 | 6286 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6287 | ui_out_spaces (uiout, 1); |
6288 | } | |
6289 | } | |
6290 | ||
6291 | /* Implement the "print_mention" breakpoint_ops method for fork | |
6292 | catchpoints. */ | |
6293 | ||
6294 | static void | |
6295 | print_mention_catch_fork (struct breakpoint *b) | |
6296 | { | |
6297 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
6298 | } | |
6299 | ||
6149aea9 PA |
6300 | /* Implement the "print_recreate" breakpoint_ops method for fork |
6301 | catchpoints. */ | |
6302 | ||
6303 | static void | |
6304 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
6305 | { | |
6306 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 6307 | print_recreate_thread (b, fp); |
6149aea9 PA |
6308 | } |
6309 | ||
ce78b96d JB |
6310 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
6311 | ||
2060206e | 6312 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 6313 | |
4a64f543 MS |
6314 | /* Implement the "insert" breakpoint_ops method for vfork |
6315 | catchpoints. */ | |
ce78b96d | 6316 | |
77b06cd7 TJB |
6317 | static int |
6318 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 6319 | { |
77b06cd7 | 6320 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
6321 | } |
6322 | ||
4a64f543 MS |
6323 | /* Implement the "remove" breakpoint_ops method for vfork |
6324 | catchpoints. */ | |
ce78b96d JB |
6325 | |
6326 | static int | |
77b06cd7 | 6327 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
6328 | { |
6329 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
6330 | } | |
6331 | ||
6332 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
6333 | catchpoints. */ | |
6334 | ||
6335 | static int | |
f1310107 TJB |
6336 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
6337 | struct address_space *aspace, CORE_ADDR bp_addr) | |
ce78b96d | 6338 | { |
e29a4733 PA |
6339 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
6340 | ||
6341 | return inferior_has_vforked (inferior_ptid, &c->forked_inferior_pid); | |
ce78b96d JB |
6342 | } |
6343 | ||
4a64f543 MS |
6344 | /* Implement the "print_it" breakpoint_ops method for vfork |
6345 | catchpoints. */ | |
ce78b96d JB |
6346 | |
6347 | static enum print_stop_action | |
348d480f | 6348 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 6349 | { |
36dfb11c | 6350 | struct ui_out *uiout = current_uiout; |
348d480f | 6351 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
6352 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
6353 | ||
ce78b96d | 6354 | annotate_catchpoint (b->number); |
36dfb11c TT |
6355 | if (b->disposition == disp_del) |
6356 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
6357 | else | |
6358 | ui_out_text (uiout, "\nCatchpoint "); | |
6359 | if (ui_out_is_mi_like_p (uiout)) | |
6360 | { | |
6361 | ui_out_field_string (uiout, "reason", | |
6362 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
6363 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6364 | } | |
6365 | ui_out_field_int (uiout, "bkptno", b->number); | |
6366 | ui_out_text (uiout, " (vforked process "); | |
6367 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
6368 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
6369 | return PRINT_SRC_AND_LOC; |
6370 | } | |
6371 | ||
4a64f543 MS |
6372 | /* Implement the "print_one" breakpoint_ops method for vfork |
6373 | catchpoints. */ | |
ce78b96d JB |
6374 | |
6375 | static void | |
a6d9a66e | 6376 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 6377 | { |
e29a4733 | 6378 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 6379 | struct value_print_options opts; |
79a45e25 | 6380 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
6381 | |
6382 | get_user_print_options (&opts); | |
4a64f543 MS |
6383 | /* Field 4, the address, is omitted (which makes the columns not |
6384 | line up too nicely with the headers, but the effect is relatively | |
6385 | readable). */ | |
79a45b7d | 6386 | if (opts.addressprint) |
ce78b96d JB |
6387 | ui_out_field_skip (uiout, "addr"); |
6388 | annotate_field (5); | |
6389 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 6390 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
6391 | { |
6392 | ui_out_text (uiout, ", process "); | |
6393 | ui_out_field_int (uiout, "what", | |
e29a4733 | 6394 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
6395 | ui_out_spaces (uiout, 1); |
6396 | } | |
6397 | } | |
6398 | ||
6399 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
6400 | catchpoints. */ | |
6401 | ||
6402 | static void | |
6403 | print_mention_catch_vfork (struct breakpoint *b) | |
6404 | { | |
6405 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
6406 | } | |
6407 | ||
6149aea9 PA |
6408 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
6409 | catchpoints. */ | |
6410 | ||
6411 | static void | |
6412 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
6413 | { | |
6414 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 6415 | print_recreate_thread (b, fp); |
6149aea9 PA |
6416 | } |
6417 | ||
ce78b96d JB |
6418 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
6419 | ||
2060206e | 6420 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 6421 | |
be5c67c1 PA |
6422 | /* An instance of this type is used to represent a syscall catchpoint. |
6423 | It includes a "struct breakpoint" as a kind of base class; users | |
6424 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
6425 | really of this type iff its ops pointer points to | |
6426 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
6427 | ||
6428 | struct syscall_catchpoint | |
6429 | { | |
6430 | /* The base class. */ | |
6431 | struct breakpoint base; | |
6432 | ||
6433 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
6434 | syscall has been specified for filtering, its value is NULL. | |
6435 | Otherwise, it holds a list of all syscalls to be caught. The | |
6436 | list elements are allocated with xmalloc. */ | |
6437 | VEC(int) *syscalls_to_be_caught; | |
6438 | }; | |
6439 | ||
6440 | /* Implement the "dtor" breakpoint_ops method for syscall | |
6441 | catchpoints. */ | |
6442 | ||
6443 | static void | |
6444 | dtor_catch_syscall (struct breakpoint *b) | |
6445 | { | |
6446 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
6447 | ||
6448 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 6449 | |
2060206e | 6450 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
6451 | } |
6452 | ||
a96d9b2e SDJ |
6453 | /* Implement the "insert" breakpoint_ops method for syscall |
6454 | catchpoints. */ | |
6455 | ||
77b06cd7 TJB |
6456 | static int |
6457 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 6458 | { |
be5c67c1 | 6459 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e SDJ |
6460 | struct inferior *inf = current_inferior (); |
6461 | ||
6462 | ++inf->total_syscalls_count; | |
be5c67c1 | 6463 | if (!c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6464 | ++inf->any_syscall_count; |
6465 | else | |
6466 | { | |
6467 | int i, iter; | |
cc59ec59 | 6468 | |
a96d9b2e | 6469 | for (i = 0; |
be5c67c1 | 6470 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6471 | i++) |
6472 | { | |
6473 | int elem; | |
cc59ec59 | 6474 | |
a96d9b2e SDJ |
6475 | if (iter >= VEC_length (int, inf->syscalls_counts)) |
6476 | { | |
6477 | int old_size = VEC_length (int, inf->syscalls_counts); | |
3e43a32a MS |
6478 | uintptr_t vec_addr_offset |
6479 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e SDJ |
6480 | uintptr_t vec_addr; |
6481 | VEC_safe_grow (int, inf->syscalls_counts, iter + 1); | |
6482 | vec_addr = (uintptr_t) VEC_address (int, inf->syscalls_counts) + | |
6483 | vec_addr_offset; | |
6484 | memset ((void *) vec_addr, 0, | |
6485 | (iter + 1 - old_size) * sizeof (int)); | |
6486 | } | |
6487 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6488 | VEC_replace (int, inf->syscalls_counts, iter, ++elem); | |
6489 | } | |
6490 | } | |
6491 | ||
77b06cd7 TJB |
6492 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
6493 | inf->total_syscalls_count != 0, | |
6494 | inf->any_syscall_count, | |
6495 | VEC_length (int, inf->syscalls_counts), | |
6496 | VEC_address (int, inf->syscalls_counts)); | |
a96d9b2e SDJ |
6497 | } |
6498 | ||
6499 | /* Implement the "remove" breakpoint_ops method for syscall | |
6500 | catchpoints. */ | |
6501 | ||
6502 | static int | |
77b06cd7 | 6503 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 6504 | { |
be5c67c1 | 6505 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e SDJ |
6506 | struct inferior *inf = current_inferior (); |
6507 | ||
6508 | --inf->total_syscalls_count; | |
be5c67c1 | 6509 | if (!c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6510 | --inf->any_syscall_count; |
6511 | else | |
6512 | { | |
6513 | int i, iter; | |
cc59ec59 | 6514 | |
a96d9b2e | 6515 | for (i = 0; |
be5c67c1 | 6516 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6517 | i++) |
6518 | { | |
6519 | int elem; | |
6520 | if (iter >= VEC_length (int, inf->syscalls_counts)) | |
6521 | /* Shouldn't happen. */ | |
6522 | continue; | |
6523 | elem = VEC_index (int, inf->syscalls_counts, iter); | |
6524 | VEC_replace (int, inf->syscalls_counts, iter, --elem); | |
6525 | } | |
6526 | } | |
6527 | ||
6528 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
6529 | inf->total_syscalls_count != 0, | |
6530 | inf->any_syscall_count, | |
6531 | VEC_length (int, inf->syscalls_counts), | |
3e43a32a MS |
6532 | VEC_address (int, |
6533 | inf->syscalls_counts)); | |
a96d9b2e SDJ |
6534 | } |
6535 | ||
6536 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
6537 | catchpoints. */ | |
6538 | ||
6539 | static int | |
f1310107 TJB |
6540 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
6541 | struct address_space *aspace, CORE_ADDR bp_addr) | |
a96d9b2e | 6542 | { |
4a64f543 MS |
6543 | /* We must check if we are catching specific syscalls in this |
6544 | breakpoint. If we are, then we must guarantee that the called | |
6545 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 6546 | int syscall_number = 0; |
be5c67c1 PA |
6547 | const struct syscall_catchpoint *c |
6548 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e SDJ |
6549 | |
6550 | if (!inferior_has_called_syscall (inferior_ptid, &syscall_number)) | |
6551 | return 0; | |
6552 | ||
6553 | /* Now, checking if the syscall is the same. */ | |
be5c67c1 | 6554 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6555 | { |
6556 | int i, iter; | |
cc59ec59 | 6557 | |
a96d9b2e | 6558 | for (i = 0; |
be5c67c1 | 6559 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6560 | i++) |
6561 | if (syscall_number == iter) | |
6562 | break; | |
6563 | /* Not the same. */ | |
6564 | if (!iter) | |
6565 | return 0; | |
6566 | } | |
6567 | ||
6568 | return 1; | |
6569 | } | |
6570 | ||
6571 | /* Implement the "print_it" breakpoint_ops method for syscall | |
6572 | catchpoints. */ | |
6573 | ||
6574 | static enum print_stop_action | |
348d480f | 6575 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 6576 | { |
36dfb11c | 6577 | struct ui_out *uiout = current_uiout; |
348d480f | 6578 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
6579 | /* These are needed because we want to know in which state a |
6580 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
6581 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
6582 | must print "called syscall" or "returned from syscall". */ | |
6583 | ptid_t ptid; | |
6584 | struct target_waitstatus last; | |
6585 | struct syscall s; | |
a96d9b2e SDJ |
6586 | char *syscall_id; |
6587 | ||
6588 | get_last_target_status (&ptid, &last); | |
6589 | ||
6590 | get_syscall_by_number (last.value.syscall_number, &s); | |
6591 | ||
6592 | annotate_catchpoint (b->number); | |
6593 | ||
36dfb11c TT |
6594 | if (b->disposition == disp_del) |
6595 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 6596 | else |
36dfb11c TT |
6597 | ui_out_text (uiout, "\nCatchpoint "); |
6598 | if (ui_out_is_mi_like_p (uiout)) | |
6599 | { | |
6600 | ui_out_field_string (uiout, "reason", | |
6601 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
6602 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
6603 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
6604 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6605 | } | |
6606 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
6607 | |
6608 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
6609 | ui_out_text (uiout, " (call to syscall "); |
6610 | else | |
6611 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 6612 | |
36dfb11c TT |
6613 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
6614 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
6615 | if (s.name != NULL) | |
6616 | ui_out_field_string (uiout, "syscall-name", s.name); | |
6617 | ||
6618 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
6619 | |
6620 | return PRINT_SRC_AND_LOC; | |
6621 | } | |
6622 | ||
6623 | /* Implement the "print_one" breakpoint_ops method for syscall | |
6624 | catchpoints. */ | |
6625 | ||
6626 | static void | |
6627 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 6628 | struct bp_location **last_loc) |
a96d9b2e | 6629 | { |
be5c67c1 | 6630 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 6631 | struct value_print_options opts; |
79a45e25 | 6632 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
6633 | |
6634 | get_user_print_options (&opts); | |
4a64f543 MS |
6635 | /* Field 4, the address, is omitted (which makes the columns not |
6636 | line up too nicely with the headers, but the effect is relatively | |
6637 | readable). */ | |
a96d9b2e SDJ |
6638 | if (opts.addressprint) |
6639 | ui_out_field_skip (uiout, "addr"); | |
6640 | annotate_field (5); | |
6641 | ||
be5c67c1 PA |
6642 | if (c->syscalls_to_be_caught |
6643 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
6644 | ui_out_text (uiout, "syscalls \""); |
6645 | else | |
6646 | ui_out_text (uiout, "syscall \""); | |
6647 | ||
be5c67c1 | 6648 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
6649 | { |
6650 | int i, iter; | |
6651 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 6652 | |
a96d9b2e | 6653 | for (i = 0; |
be5c67c1 | 6654 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6655 | i++) |
6656 | { | |
6657 | char *x = text; | |
6658 | struct syscall s; | |
6659 | get_syscall_by_number (iter, &s); | |
6660 | ||
6661 | if (s.name != NULL) | |
6662 | text = xstrprintf ("%s%s, ", text, s.name); | |
6663 | else | |
6664 | text = xstrprintf ("%s%d, ", text, iter); | |
6665 | ||
6666 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 6667 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
6668 | on every call. */ |
6669 | xfree (x); | |
6670 | } | |
6671 | /* Remove the last comma. */ | |
6672 | text[strlen (text) - 2] = '\0'; | |
6673 | ui_out_field_string (uiout, "what", text); | |
6674 | } | |
6675 | else | |
6676 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
6677 | ui_out_text (uiout, "\" "); | |
6678 | } | |
6679 | ||
6680 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
6681 | catchpoints. */ | |
6682 | ||
6683 | static void | |
6684 | print_mention_catch_syscall (struct breakpoint *b) | |
6685 | { | |
be5c67c1 PA |
6686 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
6687 | ||
6688 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
6689 | { |
6690 | int i, iter; | |
6691 | ||
be5c67c1 | 6692 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
6693 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
6694 | else | |
6695 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
6696 | ||
6697 | for (i = 0; | |
be5c67c1 | 6698 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
6699 | i++) |
6700 | { | |
6701 | struct syscall s; | |
6702 | get_syscall_by_number (iter, &s); | |
6703 | ||
6704 | if (s.name) | |
6705 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
6706 | else | |
6707 | printf_filtered (" %d", s.number); | |
6708 | } | |
6709 | printf_filtered (")"); | |
6710 | } | |
6711 | else | |
6712 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
6713 | b->number); | |
6714 | } | |
6715 | ||
6149aea9 PA |
6716 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
6717 | catchpoints. */ | |
6718 | ||
6719 | static void | |
6720 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
6721 | { | |
be5c67c1 PA |
6722 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
6723 | ||
6149aea9 PA |
6724 | fprintf_unfiltered (fp, "catch syscall"); |
6725 | ||
be5c67c1 | 6726 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
6727 | { |
6728 | int i, iter; | |
6729 | ||
6730 | for (i = 0; | |
be5c67c1 | 6731 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
6732 | i++) |
6733 | { | |
6734 | struct syscall s; | |
6735 | ||
6736 | get_syscall_by_number (iter, &s); | |
6737 | if (s.name) | |
6738 | fprintf_unfiltered (fp, " %s", s.name); | |
6739 | else | |
6740 | fprintf_unfiltered (fp, " %d", s.number); | |
6741 | } | |
6742 | } | |
d9b3f62e | 6743 | print_recreate_thread (b, fp); |
6149aea9 PA |
6744 | } |
6745 | ||
a96d9b2e SDJ |
6746 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
6747 | ||
2060206e | 6748 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
6749 | |
6750 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
6751 | ||
6752 | static int | |
6753 | syscall_catchpoint_p (struct breakpoint *b) | |
6754 | { | |
6755 | return (b->ops == &catch_syscall_breakpoint_ops); | |
6756 | } | |
6757 | ||
346774a9 PA |
6758 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
6759 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
6760 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
6761 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 6762 | |
346774a9 PA |
6763 | static void |
6764 | init_catchpoint (struct breakpoint *b, | |
6765 | struct gdbarch *gdbarch, int tempflag, | |
6766 | char *cond_string, | |
c0a91b2b | 6767 | const struct breakpoint_ops *ops) |
c906108c | 6768 | { |
c5aa993b | 6769 | struct symtab_and_line sal; |
346774a9 | 6770 | |
fe39c653 | 6771 | init_sal (&sal); |
6c95b8df | 6772 | sal.pspace = current_program_space; |
c5aa993b | 6773 | |
28010a5d | 6774 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 6775 | |
1b36a34b | 6776 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 6777 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
6778 | } |
6779 | ||
28010a5d | 6780 | void |
3ea46bff | 6781 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
6782 | { |
6783 | add_to_breakpoint_chain (b); | |
3a5c3e22 PA |
6784 | set_breakpoint_number (internal, b); |
6785 | if (!internal) | |
6786 | mention (b); | |
c56053d2 | 6787 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
6788 | |
6789 | if (update_gll) | |
6790 | update_global_location_list (1); | |
c56053d2 PA |
6791 | } |
6792 | ||
9b70b993 | 6793 | static void |
a6d9a66e UW |
6794 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
6795 | int tempflag, char *cond_string, | |
c0a91b2b | 6796 | const struct breakpoint_ops *ops) |
c906108c | 6797 | { |
e29a4733 | 6798 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 6799 | |
e29a4733 PA |
6800 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
6801 | ||
6802 | c->forked_inferior_pid = null_ptid; | |
6803 | ||
3ea46bff | 6804 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
6805 | } |
6806 | ||
fe798b75 JB |
6807 | /* Exec catchpoints. */ |
6808 | ||
b4d90040 PA |
6809 | /* An instance of this type is used to represent an exec catchpoint. |
6810 | It includes a "struct breakpoint" as a kind of base class; users | |
6811 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
6812 | really of this type iff its ops pointer points to | |
6813 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
6814 | ||
6815 | struct exec_catchpoint | |
6816 | { | |
6817 | /* The base class. */ | |
6818 | struct breakpoint base; | |
6819 | ||
6820 | /* Filename of a program whose exec triggered this catchpoint. | |
6821 | This field is only valid immediately after this catchpoint has | |
6822 | triggered. */ | |
6823 | char *exec_pathname; | |
6824 | }; | |
6825 | ||
6826 | /* Implement the "dtor" breakpoint_ops method for exec | |
6827 | catchpoints. */ | |
6828 | ||
6829 | static void | |
6830 | dtor_catch_exec (struct breakpoint *b) | |
6831 | { | |
6832 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
6833 | ||
6834 | xfree (c->exec_pathname); | |
348d480f | 6835 | |
2060206e | 6836 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
6837 | } |
6838 | ||
77b06cd7 TJB |
6839 | static int |
6840 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 6841 | { |
77b06cd7 | 6842 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 6843 | } |
c906108c | 6844 | |
fe798b75 | 6845 | static int |
77b06cd7 | 6846 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
6847 | { |
6848 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
6849 | } | |
c906108c | 6850 | |
fe798b75 | 6851 | static int |
f1310107 TJB |
6852 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
6853 | struct address_space *aspace, CORE_ADDR bp_addr) | |
fe798b75 | 6854 | { |
b4d90040 PA |
6855 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
6856 | ||
6857 | return inferior_has_execd (inferior_ptid, &c->exec_pathname); | |
fe798b75 | 6858 | } |
c906108c | 6859 | |
fe798b75 | 6860 | static enum print_stop_action |
348d480f | 6861 | print_it_catch_exec (bpstat bs) |
fe798b75 | 6862 | { |
36dfb11c | 6863 | struct ui_out *uiout = current_uiout; |
348d480f | 6864 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
6865 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
6866 | ||
fe798b75 | 6867 | annotate_catchpoint (b->number); |
36dfb11c TT |
6868 | if (b->disposition == disp_del) |
6869 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
6870 | else | |
6871 | ui_out_text (uiout, "\nCatchpoint "); | |
6872 | if (ui_out_is_mi_like_p (uiout)) | |
6873 | { | |
6874 | ui_out_field_string (uiout, "reason", | |
6875 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
6876 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
6877 | } | |
6878 | ui_out_field_int (uiout, "bkptno", b->number); | |
6879 | ui_out_text (uiout, " (exec'd "); | |
6880 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
6881 | ui_out_text (uiout, "), "); | |
6882 | ||
fe798b75 | 6883 | return PRINT_SRC_AND_LOC; |
c906108c SS |
6884 | } |
6885 | ||
fe798b75 | 6886 | static void |
a6d9a66e | 6887 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 6888 | { |
b4d90040 | 6889 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 6890 | struct value_print_options opts; |
79a45e25 | 6891 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
6892 | |
6893 | get_user_print_options (&opts); | |
6894 | ||
6895 | /* Field 4, the address, is omitted (which makes the columns | |
6896 | not line up too nicely with the headers, but the effect | |
6897 | is relatively readable). */ | |
6898 | if (opts.addressprint) | |
6899 | ui_out_field_skip (uiout, "addr"); | |
6900 | annotate_field (5); | |
6901 | ui_out_text (uiout, "exec"); | |
b4d90040 | 6902 | if (c->exec_pathname != NULL) |
fe798b75 JB |
6903 | { |
6904 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 6905 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
6906 | ui_out_text (uiout, "\" "); |
6907 | } | |
6908 | } | |
6909 | ||
6910 | static void | |
6911 | print_mention_catch_exec (struct breakpoint *b) | |
6912 | { | |
6913 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
6914 | } | |
6915 | ||
6149aea9 PA |
6916 | /* Implement the "print_recreate" breakpoint_ops method for exec |
6917 | catchpoints. */ | |
6918 | ||
6919 | static void | |
6920 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
6921 | { | |
6922 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 6923 | print_recreate_thread (b, fp); |
6149aea9 PA |
6924 | } |
6925 | ||
2060206e | 6926 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 6927 | |
a96d9b2e SDJ |
6928 | static void |
6929 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 6930 | const struct breakpoint_ops *ops) |
a96d9b2e | 6931 | { |
be5c67c1 | 6932 | struct syscall_catchpoint *c; |
a96d9b2e | 6933 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 6934 | |
be5c67c1 PA |
6935 | c = XNEW (struct syscall_catchpoint); |
6936 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
6937 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 6938 | |
3ea46bff | 6939 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
6940 | } |
6941 | ||
c906108c | 6942 | static int |
fba45db2 | 6943 | hw_breakpoint_used_count (void) |
c906108c | 6944 | { |
c906108c | 6945 | int i = 0; |
f1310107 TJB |
6946 | struct breakpoint *b; |
6947 | struct bp_location *bl; | |
c906108c SS |
6948 | |
6949 | ALL_BREAKPOINTS (b) | |
c5aa993b | 6950 | { |
d6b74ac4 | 6951 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
6952 | for (bl = b->loc; bl; bl = bl->next) |
6953 | { | |
6954 | /* Special types of hardware breakpoints may use more than | |
6955 | one register. */ | |
348d480f | 6956 | i += b->ops->resources_needed (bl); |
f1310107 | 6957 | } |
c5aa993b | 6958 | } |
c906108c SS |
6959 | |
6960 | return i; | |
6961 | } | |
6962 | ||
a1398e0c PA |
6963 | /* Returns the resources B would use if it were a hardware |
6964 | watchpoint. */ | |
6965 | ||
c906108c | 6966 | static int |
a1398e0c | 6967 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 6968 | { |
c906108c | 6969 | int i = 0; |
e09342b5 | 6970 | struct bp_location *bl; |
c906108c | 6971 | |
a1398e0c PA |
6972 | if (!breakpoint_enabled (b)) |
6973 | return 0; | |
6974 | ||
6975 | for (bl = b->loc; bl; bl = bl->next) | |
6976 | { | |
6977 | /* Special types of hardware watchpoints may use more than | |
6978 | one register. */ | |
6979 | i += b->ops->resources_needed (bl); | |
6980 | } | |
6981 | ||
6982 | return i; | |
6983 | } | |
6984 | ||
6985 | /* Returns the sum the used resources of all hardware watchpoints of | |
6986 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
6987 | the sum of the used resources of all hardware watchpoints of other | |
6988 | types _not_ TYPE. */ | |
6989 | ||
6990 | static int | |
6991 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
6992 | enum bptype type, int *other_type_used) | |
6993 | { | |
6994 | int i = 0; | |
6995 | struct breakpoint *b; | |
6996 | ||
c906108c SS |
6997 | *other_type_used = 0; |
6998 | ALL_BREAKPOINTS (b) | |
e09342b5 | 6999 | { |
a1398e0c PA |
7000 | if (b == except) |
7001 | continue; | |
e09342b5 TJB |
7002 | if (!breakpoint_enabled (b)) |
7003 | continue; | |
7004 | ||
a1398e0c PA |
7005 | if (b->type == type) |
7006 | i += hw_watchpoint_use_count (b); | |
7007 | else if (is_hardware_watchpoint (b)) | |
7008 | *other_type_used = 1; | |
e09342b5 TJB |
7009 | } |
7010 | ||
c906108c SS |
7011 | return i; |
7012 | } | |
7013 | ||
c906108c | 7014 | void |
fba45db2 | 7015 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 7016 | { |
c5aa993b | 7017 | struct breakpoint *b; |
c906108c SS |
7018 | |
7019 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7020 | { |
cc60f2e3 | 7021 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 7022 | { |
b5de0fa7 | 7023 | b->enable_state = bp_call_disabled; |
b60e7edf | 7024 | update_global_location_list (0); |
c5aa993b JM |
7025 | } |
7026 | } | |
c906108c SS |
7027 | } |
7028 | ||
7029 | void | |
fba45db2 | 7030 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 7031 | { |
c5aa993b | 7032 | struct breakpoint *b; |
c906108c SS |
7033 | |
7034 | ALL_BREAKPOINTS (b) | |
c5aa993b | 7035 | { |
cc60f2e3 | 7036 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 7037 | { |
b5de0fa7 | 7038 | b->enable_state = bp_enabled; |
b60e7edf | 7039 | update_global_location_list (1); |
c5aa993b JM |
7040 | } |
7041 | } | |
c906108c SS |
7042 | } |
7043 | ||
8bea4e01 UW |
7044 | void |
7045 | disable_breakpoints_before_startup (void) | |
7046 | { | |
6c95b8df | 7047 | current_program_space->executing_startup = 1; |
f8eba3c6 | 7048 | update_global_location_list (0); |
8bea4e01 UW |
7049 | } |
7050 | ||
7051 | void | |
7052 | enable_breakpoints_after_startup (void) | |
7053 | { | |
6c95b8df | 7054 | current_program_space->executing_startup = 0; |
f8eba3c6 | 7055 | breakpoint_re_set (); |
8bea4e01 UW |
7056 | } |
7057 | ||
c906108c SS |
7058 | |
7059 | /* Set a breakpoint that will evaporate an end of command | |
7060 | at address specified by SAL. | |
7061 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
7062 | ||
7063 | struct breakpoint * | |
a6d9a66e UW |
7064 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
7065 | struct frame_id frame_id, enum bptype type) | |
c906108c | 7066 | { |
52f0bd74 | 7067 | struct breakpoint *b; |
edb3359d DJ |
7068 | |
7069 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
7070 | one. */ | |
7071 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
7072 | ||
06edf0c0 | 7073 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
7074 | b->enable_state = bp_enabled; |
7075 | b->disposition = disp_donttouch; | |
818dd999 | 7076 | b->frame_id = frame_id; |
c906108c | 7077 | |
4a64f543 MS |
7078 | /* If we're debugging a multi-threaded program, then we want |
7079 | momentary breakpoints to be active in only a single thread of | |
7080 | control. */ | |
39f77062 KB |
7081 | if (in_thread_list (inferior_ptid)) |
7082 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 7083 | |
b60e7edf | 7084 | update_global_location_list_nothrow (1); |
74960c60 | 7085 | |
c906108c SS |
7086 | return b; |
7087 | } | |
611c83ae | 7088 | |
06edf0c0 PA |
7089 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
7090 | The new breakpoint will have type TYPE, and use OPS as it | |
7091 | breakpoint_ops. */ | |
e58b0e63 | 7092 | |
06edf0c0 PA |
7093 | static struct breakpoint * |
7094 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
7095 | enum bptype type, | |
c0a91b2b | 7096 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
7097 | { |
7098 | struct breakpoint *copy; | |
7099 | ||
06edf0c0 | 7100 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 7101 | copy->loc = allocate_bp_location (copy); |
0e30163f | 7102 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 7103 | |
a6d9a66e | 7104 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
7105 | copy->loc->requested_address = orig->loc->requested_address; |
7106 | copy->loc->address = orig->loc->address; | |
7107 | copy->loc->section = orig->loc->section; | |
6c95b8df | 7108 | copy->loc->pspace = orig->loc->pspace; |
e58b0e63 | 7109 | |
f8eba3c6 TT |
7110 | if (orig->loc->source_file != NULL) |
7111 | copy->loc->source_file = xstrdup (orig->loc->source_file); | |
e58b0e63 | 7112 | |
f8eba3c6 | 7113 | copy->loc->line_number = orig->loc->line_number; |
e58b0e63 PA |
7114 | copy->frame_id = orig->frame_id; |
7115 | copy->thread = orig->thread; | |
6c95b8df | 7116 | copy->pspace = orig->pspace; |
e58b0e63 PA |
7117 | |
7118 | copy->enable_state = bp_enabled; | |
7119 | copy->disposition = disp_donttouch; | |
7120 | copy->number = internal_breakpoint_number--; | |
7121 | ||
7122 | update_global_location_list_nothrow (0); | |
7123 | return copy; | |
7124 | } | |
7125 | ||
06edf0c0 PA |
7126 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
7127 | ORIG is NULL. */ | |
7128 | ||
7129 | struct breakpoint * | |
7130 | clone_momentary_breakpoint (struct breakpoint *orig) | |
7131 | { | |
7132 | /* If there's nothing to clone, then return nothing. */ | |
7133 | if (orig == NULL) | |
7134 | return NULL; | |
7135 | ||
7136 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
7137 | } | |
7138 | ||
611c83ae | 7139 | struct breakpoint * |
a6d9a66e UW |
7140 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
7141 | enum bptype type) | |
611c83ae PA |
7142 | { |
7143 | struct symtab_and_line sal; | |
7144 | ||
7145 | sal = find_pc_line (pc, 0); | |
7146 | sal.pc = pc; | |
7147 | sal.section = find_pc_overlay (pc); | |
7148 | sal.explicit_pc = 1; | |
7149 | ||
a6d9a66e | 7150 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 7151 | } |
c906108c | 7152 | \f |
c5aa993b | 7153 | |
c906108c SS |
7154 | /* Tell the user we have just set a breakpoint B. */ |
7155 | ||
7156 | static void | |
fba45db2 | 7157 | mention (struct breakpoint *b) |
c906108c | 7158 | { |
348d480f | 7159 | b->ops->print_mention (b); |
79a45e25 | 7160 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 7161 | return; |
c906108c SS |
7162 | printf_filtered ("\n"); |
7163 | } | |
c906108c | 7164 | \f |
c5aa993b | 7165 | |
0d381245 | 7166 | static struct bp_location * |
39d61571 | 7167 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
7168 | const struct symtab_and_line *sal) |
7169 | { | |
7170 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
7171 | CORE_ADDR adjusted_address; |
7172 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
7173 | ||
7174 | if (loc_gdbarch == NULL) | |
7175 | loc_gdbarch = b->gdbarch; | |
7176 | ||
7177 | /* Adjust the breakpoint's address prior to allocating a location. | |
7178 | Once we call allocate_bp_location(), that mostly uninitialized | |
7179 | location will be placed on the location chain. Adjustment of the | |
7180 | breakpoint may cause target_read_memory() to be called and we do | |
7181 | not want its scan of the location chain to find a breakpoint and | |
7182 | location that's only been partially initialized. */ | |
7183 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
7184 | sal->pc, b->type); | |
0d381245 | 7185 | |
39d61571 | 7186 | loc = allocate_bp_location (b); |
0d381245 VP |
7187 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
7188 | ; | |
7189 | *tmp = loc; | |
3742cc8b | 7190 | |
0d381245 | 7191 | loc->requested_address = sal->pc; |
3742cc8b | 7192 | loc->address = adjusted_address; |
6c95b8df PA |
7193 | loc->pspace = sal->pspace; |
7194 | gdb_assert (loc->pspace != NULL); | |
0d381245 | 7195 | loc->section = sal->section; |
3742cc8b | 7196 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 TT |
7197 | |
7198 | if (sal->symtab != NULL) | |
7199 | loc->source_file = xstrdup (sal->symtab->filename); | |
7200 | loc->line_number = sal->line; | |
7201 | ||
0e30163f JK |
7202 | set_breakpoint_location_function (loc, |
7203 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
7204 | return loc; |
7205 | } | |
514f746b AR |
7206 | \f |
7207 | ||
7208 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
7209 | return 0 otherwise. */ | |
7210 | ||
7211 | static int | |
7212 | bp_loc_is_permanent (struct bp_location *loc) | |
7213 | { | |
7214 | int len; | |
7215 | CORE_ADDR addr; | |
1afeeb75 | 7216 | const gdb_byte *bpoint; |
514f746b | 7217 | gdb_byte *target_mem; |
939c61fa JK |
7218 | struct cleanup *cleanup; |
7219 | int retval = 0; | |
514f746b AR |
7220 | |
7221 | gdb_assert (loc != NULL); | |
7222 | ||
7223 | addr = loc->address; | |
1afeeb75 | 7224 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 7225 | |
939c61fa | 7226 | /* Software breakpoints unsupported? */ |
1afeeb75 | 7227 | if (bpoint == NULL) |
939c61fa JK |
7228 | return 0; |
7229 | ||
514f746b AR |
7230 | target_mem = alloca (len); |
7231 | ||
939c61fa JK |
7232 | /* Enable the automatic memory restoration from breakpoints while |
7233 | we read the memory. Otherwise we could say about our temporary | |
7234 | breakpoints they are permanent. */ | |
6c95b8df PA |
7235 | cleanup = save_current_space_and_thread (); |
7236 | ||
7237 | switch_to_program_space_and_thread (loc->pspace); | |
7238 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 7239 | |
514f746b | 7240 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 7241 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 7242 | retval = 1; |
514f746b | 7243 | |
939c61fa JK |
7244 | do_cleanups (cleanup); |
7245 | ||
7246 | return retval; | |
514f746b AR |
7247 | } |
7248 | ||
7249 | ||
c3f6f71d | 7250 | |
018d34a4 VP |
7251 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
7252 | as textual description of the location, and COND_STRING | |
db107f19 | 7253 | as condition expression. */ |
018d34a4 VP |
7254 | |
7255 | static void | |
d9b3f62e PA |
7256 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
7257 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 7258 | char *filter, char *cond_string, |
d9b3f62e PA |
7259 | enum bptype type, enum bpdisp disposition, |
7260 | int thread, int task, int ignore_count, | |
c0a91b2b | 7261 | const struct breakpoint_ops *ops, int from_tty, |
d9b3f62e | 7262 | int enabled, int internal, int display_canonical) |
018d34a4 | 7263 | { |
0d381245 | 7264 | int i; |
018d34a4 VP |
7265 | |
7266 | if (type == bp_hardware_breakpoint) | |
7267 | { | |
fbbd034e AS |
7268 | int target_resources_ok; |
7269 | ||
7270 | i = hw_breakpoint_used_count (); | |
7271 | target_resources_ok = | |
7272 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
7273 | i + 1, 0); |
7274 | if (target_resources_ok == 0) | |
7275 | error (_("No hardware breakpoint support in the target.")); | |
7276 | else if (target_resources_ok < 0) | |
7277 | error (_("Hardware breakpoints used exceeds limit.")); | |
7278 | } | |
7279 | ||
6c95b8df PA |
7280 | gdb_assert (sals.nelts > 0); |
7281 | ||
0d381245 VP |
7282 | for (i = 0; i < sals.nelts; ++i) |
7283 | { | |
7284 | struct symtab_and_line sal = sals.sals[i]; | |
7285 | struct bp_location *loc; | |
7286 | ||
7287 | if (from_tty) | |
5af949e3 UW |
7288 | { |
7289 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
7290 | if (!loc_gdbarch) | |
7291 | loc_gdbarch = gdbarch; | |
7292 | ||
7293 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 7294 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 7295 | } |
0d381245 VP |
7296 | |
7297 | if (i == 0) | |
7298 | { | |
d9b3f62e | 7299 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 7300 | b->thread = thread; |
4a306c9a | 7301 | b->task = task; |
018d34a4 | 7302 | |
0d381245 VP |
7303 | b->cond_string = cond_string; |
7304 | b->ignore_count = ignore_count; | |
41447f92 | 7305 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 7306 | b->disposition = disposition; |
6c95b8df | 7307 | |
0fb4aa4b PA |
7308 | if (type == bp_static_tracepoint) |
7309 | { | |
d9b3f62e | 7310 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
7311 | struct static_tracepoint_marker marker; |
7312 | ||
983af33b | 7313 | if (strace_marker_p (b)) |
0fb4aa4b PA |
7314 | { |
7315 | /* We already know the marker exists, otherwise, we | |
7316 | wouldn't see a sal for it. */ | |
7317 | char *p = &addr_string[3]; | |
7318 | char *endp; | |
7319 | char *marker_str; | |
0fb4aa4b | 7320 | |
e9cafbcc | 7321 | p = skip_spaces (p); |
0fb4aa4b | 7322 | |
e9cafbcc | 7323 | endp = skip_to_space (p); |
0fb4aa4b PA |
7324 | |
7325 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 7326 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 7327 | |
3e43a32a MS |
7328 | printf_filtered (_("Probed static tracepoint " |
7329 | "marker \"%s\"\n"), | |
d9b3f62e | 7330 | t->static_trace_marker_id); |
0fb4aa4b PA |
7331 | } |
7332 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
7333 | { | |
d9b3f62e | 7334 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
7335 | release_static_tracepoint_marker (&marker); |
7336 | ||
3e43a32a MS |
7337 | printf_filtered (_("Probed static tracepoint " |
7338 | "marker \"%s\"\n"), | |
d9b3f62e | 7339 | t->static_trace_marker_id); |
0fb4aa4b PA |
7340 | } |
7341 | else | |
3e43a32a MS |
7342 | warning (_("Couldn't determine the static " |
7343 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
7344 | } |
7345 | ||
0d381245 VP |
7346 | loc = b->loc; |
7347 | } | |
7348 | else | |
018d34a4 | 7349 | { |
39d61571 | 7350 | loc = add_location_to_breakpoint (b, &sal); |
0d381245 VP |
7351 | } |
7352 | ||
514f746b AR |
7353 | if (bp_loc_is_permanent (loc)) |
7354 | make_breakpoint_permanent (b); | |
7355 | ||
0d381245 VP |
7356 | if (b->cond_string) |
7357 | { | |
7358 | char *arg = b->cond_string; | |
d32a6982 | 7359 | loc->cond = parse_exp_1 (&arg, block_for_pc (loc->address), 0); |
0d381245 | 7360 | if (*arg) |
db107f19 | 7361 | error (_("Garbage %s follows condition"), arg); |
018d34a4 | 7362 | } |
0d381245 | 7363 | } |
018d34a4 | 7364 | |
56435ebe | 7365 | b->display_canonical = display_canonical; |
018d34a4 VP |
7366 | if (addr_string) |
7367 | b->addr_string = addr_string; | |
7368 | else | |
7369 | /* addr_string has to be used or breakpoint_re_set will delete | |
7370 | me. */ | |
5af949e3 UW |
7371 | b->addr_string |
7372 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 7373 | b->filter = filter; |
d9b3f62e | 7374 | } |
018d34a4 | 7375 | |
d9b3f62e PA |
7376 | static void |
7377 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
7378 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 7379 | char *filter, char *cond_string, |
d9b3f62e PA |
7380 | enum bptype type, enum bpdisp disposition, |
7381 | int thread, int task, int ignore_count, | |
c0a91b2b | 7382 | const struct breakpoint_ops *ops, int from_tty, |
d9b3f62e PA |
7383 | int enabled, int internal, int display_canonical) |
7384 | { | |
7385 | struct breakpoint *b; | |
7386 | struct cleanup *old_chain; | |
7387 | ||
7388 | if (is_tracepoint_type (type)) | |
7389 | { | |
7390 | struct tracepoint *t; | |
7391 | ||
7392 | t = XCNEW (struct tracepoint); | |
7393 | b = &t->base; | |
7394 | } | |
7395 | else | |
7396 | b = XNEW (struct breakpoint); | |
7397 | ||
7398 | old_chain = make_cleanup (xfree, b); | |
7399 | ||
7400 | init_breakpoint_sal (b, gdbarch, | |
7401 | sals, addr_string, | |
f8eba3c6 | 7402 | filter, cond_string, |
d9b3f62e PA |
7403 | type, disposition, |
7404 | thread, task, ignore_count, | |
7405 | ops, from_tty, | |
7406 | enabled, internal, display_canonical); | |
7407 | discard_cleanups (old_chain); | |
7408 | ||
3ea46bff | 7409 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
7410 | } |
7411 | ||
7412 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
7413 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
7414 | value. COND_STRING, if not NULL, specified the condition to be | |
7415 | used for all breakpoints. Essentially the only case where | |
7416 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
7417 | function. In that case, it's still not possible to specify | |
7418 | separate conditions for different overloaded functions, so | |
7419 | we take just a single condition string. | |
7420 | ||
c3f6f71d | 7421 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 7422 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
7423 | array contents). If the function fails (error() is called), the |
7424 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 7425 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
7426 | |
7427 | static void | |
8cdf0e15 | 7428 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 7429 | struct linespec_result *canonical, |
8cdf0e15 VP |
7430 | char *cond_string, |
7431 | enum bptype type, enum bpdisp disposition, | |
7432 | int thread, int task, int ignore_count, | |
c0a91b2b | 7433 | const struct breakpoint_ops *ops, int from_tty, |
84f4c1fe | 7434 | int enabled, int internal) |
c906108c | 7435 | { |
018d34a4 | 7436 | int i; |
f8eba3c6 | 7437 | struct linespec_sals *lsal; |
cc59ec59 | 7438 | |
f8eba3c6 TT |
7439 | if (canonical->pre_expanded) |
7440 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
7441 | ||
7442 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 7443 | { |
f8eba3c6 TT |
7444 | /* Note that 'addr_string' can be NULL in the case of a plain |
7445 | 'break', without arguments. */ | |
7446 | char *addr_string = (canonical->addr_string | |
7447 | ? xstrdup (canonical->addr_string) | |
7448 | : NULL); | |
7449 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
7450 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 7451 | |
f8eba3c6 TT |
7452 | make_cleanup (xfree, filter_string); |
7453 | create_breakpoint_sal (gdbarch, lsal->sals, | |
7454 | addr_string, | |
7455 | filter_string, | |
8cdf0e15 | 7456 | cond_string, type, disposition, |
84f4c1fe | 7457 | thread, task, ignore_count, ops, |
56435ebe TT |
7458 | from_tty, enabled, internal, |
7459 | canonical->special_display); | |
f8eba3c6 | 7460 | discard_cleanups (inner); |
c3f6f71d | 7461 | } |
c3f6f71d | 7462 | } |
c906108c | 7463 | |
9998af43 | 7464 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 7465 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 7466 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
7467 | address strings. ADDRESS points to the end of the SAL. |
7468 | ||
7469 | The array and the line spec strings are allocated on the heap, it is | |
7470 | the caller's responsibility to free them. */ | |
c906108c | 7471 | |
b9362cc7 | 7472 | static void |
c3f6f71d | 7473 | parse_breakpoint_sals (char **address, |
58438ac1 | 7474 | struct linespec_result *canonical) |
c3f6f71d JM |
7475 | { |
7476 | char *addr_start = *address; | |
cc59ec59 | 7477 | |
c3f6f71d | 7478 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 7479 | breakpoint. */ |
c3f6f71d JM |
7480 | if ((*address) == NULL |
7481 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 7482 | { |
1bfeeb0f JL |
7483 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
7484 | address. */ | |
7485 | if (last_displayed_sal_is_valid ()) | |
c906108c | 7486 | { |
f8eba3c6 | 7487 | struct linespec_sals lsal; |
c3f6f71d | 7488 | struct symtab_and_line sal; |
cc59ec59 | 7489 | |
4a64f543 | 7490 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 7491 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 7492 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
7493 | |
7494 | /* Set sal's pspace, pc, symtab, and line to the values | |
7495 | corresponding to the last call to print_frame_info. */ | |
7496 | get_last_displayed_sal (&sal); | |
7497 | sal.section = find_pc_overlay (sal.pc); | |
00903456 | 7498 | |
4a64f543 | 7499 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
7500 | where PC is the last displayed codepoint's address. So |
7501 | make sure to set sal.explicit_pc to prevent GDB from | |
7502 | trying to expand the list of sals to include all other | |
7503 | instances with the same symtab and line. */ | |
00903456 JK |
7504 | sal.explicit_pc = 1; |
7505 | ||
f8eba3c6 TT |
7506 | lsal.sals.sals[0] = sal; |
7507 | lsal.sals.nelts = 1; | |
7508 | lsal.canonical = NULL; | |
7509 | ||
7510 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
7511 | } |
7512 | else | |
8a3fe4f8 | 7513 | error (_("No default breakpoint address now.")); |
c906108c SS |
7514 | } |
7515 | else | |
7516 | { | |
c906108c | 7517 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
7518 | current_source_symtab (which is decode_line_1's default). |
7519 | This should produce the results we want almost all of the | |
f8eba3c6 TT |
7520 | time while leaving default_breakpoint_* alone. */ |
7521 | if (last_displayed_sal_is_valid ()) | |
7522 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, | |
7523 | get_last_displayed_symtab (), | |
7524 | get_last_displayed_line (), | |
7525 | canonical, NULL, NULL); | |
c906108c | 7526 | else |
f8eba3c6 TT |
7527 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
7528 | (struct symtab *) NULL, 0, | |
7529 | canonical, NULL, NULL); | |
c906108c | 7530 | } |
c3f6f71d | 7531 | } |
c906108c | 7532 | |
c906108c | 7533 | |
c3f6f71d | 7534 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 7535 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 7536 | |
b9362cc7 | 7537 | static void |
23e7acfb | 7538 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
7539 | { |
7540 | int i; | |
cc59ec59 | 7541 | |
c3f6f71d | 7542 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 7543 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
7544 | } |
7545 | ||
7a697b8d SS |
7546 | /* Fast tracepoints may have restrictions on valid locations. For |
7547 | instance, a fast tracepoint using a jump instead of a trap will | |
7548 | likely have to overwrite more bytes than a trap would, and so can | |
7549 | only be placed where the instruction is longer than the jump, or a | |
7550 | multi-instruction sequence does not have a jump into the middle of | |
7551 | it, etc. */ | |
7552 | ||
7553 | static void | |
7554 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
7555 | struct symtabs_and_lines *sals) | |
7556 | { | |
7557 | int i, rslt; | |
7558 | struct symtab_and_line *sal; | |
7559 | char *msg; | |
7560 | struct cleanup *old_chain; | |
7561 | ||
7562 | for (i = 0; i < sals->nelts; i++) | |
7563 | { | |
f8eba3c6 TT |
7564 | struct gdbarch *sarch; |
7565 | ||
7a697b8d SS |
7566 | sal = &sals->sals[i]; |
7567 | ||
f8eba3c6 TT |
7568 | sarch = get_sal_arch (*sal); |
7569 | /* We fall back to GDBARCH if there is no architecture | |
7570 | associated with SAL. */ | |
7571 | if (sarch == NULL) | |
7572 | sarch = gdbarch; | |
7573 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
7574 | NULL, &msg); |
7575 | old_chain = make_cleanup (xfree, msg); | |
7576 | ||
7577 | if (!rslt) | |
7578 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 7579 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
7580 | |
7581 | do_cleanups (old_chain); | |
7582 | } | |
7583 | } | |
7584 | ||
018d34a4 VP |
7585 | /* Given TOK, a string specification of condition and thread, as |
7586 | accepted by the 'break' command, extract the condition | |
7587 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 7588 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
7589 | If no condition is found, *COND_STRING is set to NULL. |
7590 | If no thread is found, *THREAD is set to -1. */ | |
7591 | static void | |
7592 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
4a306c9a | 7593 | char **cond_string, int *thread, int *task) |
018d34a4 VP |
7594 | { |
7595 | *cond_string = NULL; | |
7596 | *thread = -1; | |
7597 | while (tok && *tok) | |
7598 | { | |
7599 | char *end_tok; | |
7600 | int toklen; | |
7601 | char *cond_start = NULL; | |
7602 | char *cond_end = NULL; | |
cc59ec59 | 7603 | |
e9cafbcc | 7604 | tok = skip_spaces (tok); |
018d34a4 | 7605 | |
e9cafbcc | 7606 | end_tok = skip_to_space (tok); |
018d34a4 VP |
7607 | |
7608 | toklen = end_tok - tok; | |
7609 | ||
7610 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
7611 | { | |
f7545552 TT |
7612 | struct expression *expr; |
7613 | ||
018d34a4 | 7614 | tok = cond_start = end_tok + 1; |
f7545552 TT |
7615 | expr = parse_exp_1 (&tok, block_for_pc (pc), 0); |
7616 | xfree (expr); | |
018d34a4 VP |
7617 | cond_end = tok; |
7618 | *cond_string = savestring (cond_start, | |
7619 | cond_end - cond_start); | |
7620 | } | |
7621 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
7622 | { | |
7623 | char *tmptok; | |
7624 | ||
7625 | tok = end_tok + 1; | |
7626 | tmptok = tok; | |
7627 | *thread = strtol (tok, &tok, 0); | |
7628 | if (tok == tmptok) | |
7629 | error (_("Junk after thread keyword.")); | |
7630 | if (!valid_thread_id (*thread)) | |
7631 | error (_("Unknown thread %d."), *thread); | |
7632 | } | |
4a306c9a JB |
7633 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
7634 | { | |
7635 | char *tmptok; | |
7636 | ||
7637 | tok = end_tok + 1; | |
7638 | tmptok = tok; | |
7639 | *task = strtol (tok, &tok, 0); | |
7640 | if (tok == tmptok) | |
7641 | error (_("Junk after task keyword.")); | |
7642 | if (!valid_task_id (*task)) | |
b6199126 | 7643 | error (_("Unknown task %d."), *task); |
4a306c9a | 7644 | } |
018d34a4 VP |
7645 | else |
7646 | error (_("Junk at end of arguments.")); | |
7647 | } | |
7648 | } | |
7649 | ||
0fb4aa4b PA |
7650 | /* Decode a static tracepoint marker spec. */ |
7651 | ||
7652 | static struct symtabs_and_lines | |
7653 | decode_static_tracepoint_spec (char **arg_p) | |
7654 | { | |
7655 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
7656 | struct symtabs_and_lines sals; | |
7657 | struct symtab_and_line sal; | |
7658 | struct symbol *sym; | |
7659 | struct cleanup *old_chain; | |
7660 | char *p = &(*arg_p)[3]; | |
7661 | char *endp; | |
7662 | char *marker_str; | |
7663 | int i; | |
7664 | ||
e9cafbcc | 7665 | p = skip_spaces (p); |
0fb4aa4b | 7666 | |
e9cafbcc | 7667 | endp = skip_to_space (p); |
0fb4aa4b PA |
7668 | |
7669 | marker_str = savestring (p, endp - p); | |
7670 | old_chain = make_cleanup (xfree, marker_str); | |
7671 | ||
7672 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
7673 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
7674 | error (_("No known static tracepoint marker named %s"), marker_str); | |
7675 | ||
7676 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
7677 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
7678 | ||
7679 | for (i = 0; i < sals.nelts; i++) | |
7680 | { | |
7681 | struct static_tracepoint_marker *marker; | |
7682 | ||
7683 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
7684 | ||
7685 | init_sal (&sals.sals[i]); | |
7686 | ||
7687 | sals.sals[i] = find_pc_line (marker->address, 0); | |
7688 | sals.sals[i].pc = marker->address; | |
7689 | ||
7690 | release_static_tracepoint_marker (marker); | |
7691 | } | |
7692 | ||
7693 | do_cleanups (old_chain); | |
7694 | ||
7695 | *arg_p = endp; | |
7696 | return sals; | |
7697 | } | |
7698 | ||
fd9b8c24 PA |
7699 | /* Set a breakpoint. This function is shared between CLI and MI |
7700 | functions for setting a breakpoint. This function has two major | |
7701 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
7702 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
7703 | breakpoint location, address and thread. Otherwise, ARG is just |
7704 | the location of breakpoint, with condition and thread specified by | |
7705 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
7706 | the breakpoint number will be allocated from the internal | |
7707 | breakpoint count. Returns true if any breakpoint was created; | |
7708 | false otherwise. */ | |
0101ce28 | 7709 | |
8cdf0e15 VP |
7710 | int |
7711 | create_breakpoint (struct gdbarch *gdbarch, | |
7712 | char *arg, char *cond_string, int thread, | |
7713 | int parse_condition_and_thread, | |
0fb4aa4b | 7714 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
7715 | int ignore_count, |
7716 | enum auto_boolean pending_break_support, | |
c0a91b2b | 7717 | const struct breakpoint_ops *ops, |
84f4c1fe | 7718 | int from_tty, int enabled, int internal) |
c3f6f71d | 7719 | { |
b78a6381 | 7720 | volatile struct gdb_exception e; |
f8eba3c6 | 7721 | char *copy_arg = NULL; |
c3f6f71d | 7722 | char *addr_start = arg; |
7efd8fc2 | 7723 | struct linespec_result canonical; |
c3f6f71d | 7724 | struct cleanup *old_chain; |
80c99de1 | 7725 | struct cleanup *bkpt_chain = NULL; |
05ff989b | 7726 | int i; |
0101ce28 | 7727 | int pending = 0; |
4a306c9a | 7728 | int task = 0; |
86b17b60 | 7729 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 7730 | |
348d480f PA |
7731 | gdb_assert (ops != NULL); |
7732 | ||
7efd8fc2 | 7733 | init_linespec_result (&canonical); |
c3f6f71d | 7734 | |
b78a6381 TT |
7735 | TRY_CATCH (e, RETURN_MASK_ALL) |
7736 | { | |
983af33b SDJ |
7737 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
7738 | addr_start, ©_arg); | |
b78a6381 | 7739 | } |
0101ce28 JJ |
7740 | |
7741 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 7742 | switch (e.reason) |
0101ce28 | 7743 | { |
983af33b SDJ |
7744 | case GDB_NO_ERROR: |
7745 | if (VEC_empty (linespec_sals, canonical.sals)) | |
7746 | return 0; | |
7747 | break; | |
05ff989b AC |
7748 | case RETURN_ERROR: |
7749 | switch (e.error) | |
0101ce28 | 7750 | { |
05ff989b | 7751 | case NOT_FOUND_ERROR: |
0101ce28 | 7752 | |
05ff989b AC |
7753 | /* If pending breakpoint support is turned off, throw |
7754 | error. */ | |
fa8d40ab JJ |
7755 | |
7756 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
7757 | throw_exception (e); |
7758 | ||
7759 | exception_print (gdb_stderr, e); | |
fa8d40ab | 7760 | |
05ff989b AC |
7761 | /* If pending breakpoint support is auto query and the user |
7762 | selects no, then simply return the error code. */ | |
059fb39f | 7763 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
7764 | && !nquery (_("Make %s pending on future shared library load? "), |
7765 | bptype_string (type_wanted))) | |
fd9b8c24 | 7766 | return 0; |
fa8d40ab | 7767 | |
05ff989b AC |
7768 | /* At this point, either the user was queried about setting |
7769 | a pending breakpoint and selected yes, or pending | |
7770 | breakpoint behavior is on and thus a pending breakpoint | |
7771 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
7772 | { |
7773 | struct linespec_sals lsal; | |
7774 | ||
7775 | copy_arg = xstrdup (addr_start); | |
7776 | lsal.canonical = xstrdup (copy_arg); | |
7777 | lsal.sals.nelts = 1; | |
7778 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
7779 | init_sal (&lsal.sals.sals[0]); | |
7780 | pending = 1; | |
7781 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
7782 | } | |
05ff989b AC |
7783 | break; |
7784 | default: | |
98deb0da | 7785 | throw_exception (e); |
0101ce28 | 7786 | } |
2abae994 | 7787 | break; |
05ff989b | 7788 | default: |
983af33b | 7789 | throw_exception (e); |
0101ce28 | 7790 | } |
c3f6f71d | 7791 | |
4a64f543 | 7792 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 7793 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 7794 | |
c3f6f71d JM |
7795 | /* ----------------------------- SNIP ----------------------------- |
7796 | Anything added to the cleanup chain beyond this point is assumed | |
7797 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
7798 | then the memory is not reclaimed. */ |
7799 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 7800 | |
c3f6f71d JM |
7801 | /* Resolve all line numbers to PC's and verify that the addresses |
7802 | are ok for the target. */ | |
0101ce28 | 7803 | if (!pending) |
f8eba3c6 TT |
7804 | { |
7805 | int ix; | |
7806 | struct linespec_sals *iter; | |
7807 | ||
7808 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
7809 | breakpoint_sals_to_pc (&iter->sals); | |
7810 | } | |
c3f6f71d | 7811 | |
7a697b8d | 7812 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 7813 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
7814 | { |
7815 | int ix; | |
7816 | struct linespec_sals *iter; | |
7817 | ||
7818 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
7819 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
7820 | } | |
7a697b8d | 7821 | |
c3f6f71d JM |
7822 | /* Verify that condition can be parsed, before setting any |
7823 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 7824 | breakpoint. */ |
0101ce28 | 7825 | if (!pending) |
c3f6f71d | 7826 | { |
f8eba3c6 TT |
7827 | struct linespec_sals *lsal; |
7828 | ||
7829 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
7830 | ||
2f069f6f | 7831 | if (parse_condition_and_thread) |
72b2ff0e VP |
7832 | { |
7833 | /* Here we only parse 'arg' to separate condition | |
7834 | from thread number, so parsing in context of first | |
7835 | sal is OK. When setting the breakpoint we'll | |
7836 | re-parse it in context of each sal. */ | |
7837 | cond_string = NULL; | |
7838 | thread = -1; | |
f8eba3c6 | 7839 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
4a306c9a | 7840 | &thread, &task); |
72b2ff0e VP |
7841 | if (cond_string) |
7842 | make_cleanup (xfree, cond_string); | |
7843 | } | |
2f069f6f | 7844 | else |
72b2ff0e VP |
7845 | { |
7846 | /* Create a private copy of condition string. */ | |
7847 | if (cond_string) | |
7848 | { | |
7849 | cond_string = xstrdup (cond_string); | |
7850 | make_cleanup (xfree, cond_string); | |
7851 | } | |
7852 | } | |
0fb4aa4b | 7853 | |
983af33b | 7854 | ops->create_breakpoints_sal (gdbarch, &canonical, lsal, |
d9b3f62e PA |
7855 | cond_string, type_wanted, |
7856 | tempflag ? disp_del : disp_donttouch, | |
7857 | thread, task, ignore_count, ops, | |
983af33b | 7858 | from_tty, enabled, internal); |
c906108c | 7859 | } |
0101ce28 JJ |
7860 | else |
7861 | { | |
0101ce28 JJ |
7862 | struct breakpoint *b; |
7863 | ||
0101ce28 JJ |
7864 | make_cleanup (xfree, copy_arg); |
7865 | ||
bfccc43c YQ |
7866 | if (is_tracepoint_type (type_wanted)) |
7867 | { | |
7868 | struct tracepoint *t; | |
7869 | ||
7870 | t = XCNEW (struct tracepoint); | |
7871 | b = &t->base; | |
7872 | } | |
7873 | else | |
7874 | b = XNEW (struct breakpoint); | |
7875 | ||
7876 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
7877 | ||
f8eba3c6 | 7878 | b->addr_string = copy_arg; |
72b2ff0e | 7879 | b->cond_string = NULL; |
0101ce28 | 7880 | b->ignore_count = ignore_count; |
0101ce28 | 7881 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 7882 | b->condition_not_parsed = 1; |
41447f92 | 7883 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
7884 | if ((type_wanted != bp_breakpoint |
7885 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 7886 | b->pspace = current_program_space; |
8bea4e01 | 7887 | |
bfccc43c | 7888 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
7889 | } |
7890 | ||
f8eba3c6 | 7891 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 7892 | { |
3e43a32a MS |
7893 | warning (_("Multiple breakpoints were set.\nUse the " |
7894 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 7895 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
7896 | } |
7897 | ||
80c99de1 PA |
7898 | /* That's it. Discard the cleanups for data inserted into the |
7899 | breakpoint. */ | |
7900 | discard_cleanups (bkpt_chain); | |
7901 | /* But cleanup everything else. */ | |
c3f6f71d | 7902 | do_cleanups (old_chain); |
217dc9e2 | 7903 | |
80c99de1 | 7904 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 7905 | update_global_location_list (1); |
fd9b8c24 PA |
7906 | |
7907 | return 1; | |
c3f6f71d | 7908 | } |
c906108c | 7909 | |
348d480f | 7910 | /* Set a breakpoint. |
72b2ff0e VP |
7911 | ARG is a string describing breakpoint address, |
7912 | condition, and thread. | |
7913 | FLAG specifies if a breakpoint is hardware on, | |
7914 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
7915 | and BP_TEMPFLAG. */ | |
348d480f | 7916 | |
98deb0da | 7917 | static void |
72b2ff0e | 7918 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 7919 | { |
72b2ff0e | 7920 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
7921 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
7922 | ? bp_hardware_breakpoint | |
7923 | : bp_breakpoint); | |
c3f6f71d | 7924 | |
8cdf0e15 VP |
7925 | create_breakpoint (get_current_arch (), |
7926 | arg, | |
7927 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b | 7928 | tempflag, type_wanted, |
8cdf0e15 VP |
7929 | 0 /* Ignore count */, |
7930 | pending_break_support, | |
348d480f | 7931 | &bkpt_breakpoint_ops, |
8cdf0e15 | 7932 | from_tty, |
84f4c1fe PM |
7933 | 1 /* enabled */, |
7934 | 0 /* internal */); | |
c906108c SS |
7935 | } |
7936 | ||
c906108c SS |
7937 | /* Helper function for break_command_1 and disassemble_command. */ |
7938 | ||
7939 | void | |
fba45db2 | 7940 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
7941 | { |
7942 | CORE_ADDR pc; | |
7943 | ||
7944 | if (sal->pc == 0 && sal->symtab != NULL) | |
7945 | { | |
7946 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 7947 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
7948 | sal->line, sal->symtab->filename); |
7949 | sal->pc = pc; | |
6a048695 | 7950 | |
4a64f543 MS |
7951 | /* If this SAL corresponds to a breakpoint inserted using a line |
7952 | number, then skip the function prologue if necessary. */ | |
6a048695 | 7953 | if (sal->explicit_line) |
059acae7 | 7954 | skip_prologue_sal (sal); |
c906108c SS |
7955 | } |
7956 | ||
7957 | if (sal->section == 0 && sal->symtab != NULL) | |
7958 | { | |
7959 | struct blockvector *bv; | |
c5aa993b JM |
7960 | struct block *b; |
7961 | struct symbol *sym; | |
c906108c | 7962 | |
801e3a5b | 7963 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
7964 | if (bv != NULL) |
7965 | { | |
7f0df278 | 7966 | sym = block_linkage_function (b); |
c906108c SS |
7967 | if (sym != NULL) |
7968 | { | |
7969 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 7970 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
7971 | } |
7972 | else | |
7973 | { | |
4a64f543 MS |
7974 | /* It really is worthwhile to have the section, so we'll |
7975 | just have to look harder. This case can be executed | |
7976 | if we have line numbers but no functions (as can | |
7977 | happen in assembly source). */ | |
c906108c | 7978 | |
c5aa993b | 7979 | struct minimal_symbol *msym; |
6c95b8df PA |
7980 | struct cleanup *old_chain = save_current_space_and_thread (); |
7981 | ||
7982 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
7983 | |
7984 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7985 | if (msym) | |
714835d5 | 7986 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
7987 | |
7988 | do_cleanups (old_chain); | |
c906108c SS |
7989 | } |
7990 | } | |
7991 | } | |
7992 | } | |
7993 | ||
7994 | void | |
fba45db2 | 7995 | break_command (char *arg, int from_tty) |
c906108c | 7996 | { |
db107f19 | 7997 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
7998 | } |
7999 | ||
c906108c | 8000 | void |
fba45db2 | 8001 | tbreak_command (char *arg, int from_tty) |
c906108c | 8002 | { |
db107f19 | 8003 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
8004 | } |
8005 | ||
c906108c | 8006 | static void |
fba45db2 | 8007 | hbreak_command (char *arg, int from_tty) |
c906108c | 8008 | { |
db107f19 | 8009 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
8010 | } |
8011 | ||
8012 | static void | |
fba45db2 | 8013 | thbreak_command (char *arg, int from_tty) |
c906108c | 8014 | { |
db107f19 | 8015 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
8016 | } |
8017 | ||
8018 | static void | |
fba45db2 | 8019 | stop_command (char *arg, int from_tty) |
c906108c | 8020 | { |
a3f17187 | 8021 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 8022 | Usage: stop in <function | address>\n\ |
a3f17187 | 8023 | stop at <line>\n")); |
c906108c SS |
8024 | } |
8025 | ||
8026 | static void | |
fba45db2 | 8027 | stopin_command (char *arg, int from_tty) |
c906108c SS |
8028 | { |
8029 | int badInput = 0; | |
8030 | ||
c5aa993b | 8031 | if (arg == (char *) NULL) |
c906108c SS |
8032 | badInput = 1; |
8033 | else if (*arg != '*') | |
8034 | { | |
8035 | char *argptr = arg; | |
8036 | int hasColon = 0; | |
8037 | ||
4a64f543 | 8038 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 8039 | say it is bad, otherwise, it should be an address or |
4a64f543 | 8040 | function/method name. */ |
c906108c | 8041 | while (*argptr && !hasColon) |
c5aa993b JM |
8042 | { |
8043 | hasColon = (*argptr == ':'); | |
8044 | argptr++; | |
8045 | } | |
c906108c SS |
8046 | |
8047 | if (hasColon) | |
c5aa993b | 8048 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 8049 | else |
c5aa993b | 8050 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
8051 | } |
8052 | ||
8053 | if (badInput) | |
a3f17187 | 8054 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 8055 | else |
db107f19 | 8056 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8057 | } |
8058 | ||
8059 | static void | |
fba45db2 | 8060 | stopat_command (char *arg, int from_tty) |
c906108c SS |
8061 | { |
8062 | int badInput = 0; | |
8063 | ||
c5aa993b | 8064 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
8065 | badInput = 1; |
8066 | else | |
8067 | { | |
8068 | char *argptr = arg; | |
8069 | int hasColon = 0; | |
8070 | ||
4a64f543 MS |
8071 | /* Look for a ':'. If there is a '::' then get out, otherwise |
8072 | it is probably a line number. */ | |
c906108c | 8073 | while (*argptr && !hasColon) |
c5aa993b JM |
8074 | { |
8075 | hasColon = (*argptr == ':'); | |
8076 | argptr++; | |
8077 | } | |
c906108c SS |
8078 | |
8079 | if (hasColon) | |
c5aa993b | 8080 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 8081 | else |
c5aa993b | 8082 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
8083 | } |
8084 | ||
8085 | if (badInput) | |
a3f17187 | 8086 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 8087 | else |
db107f19 | 8088 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
8089 | } |
8090 | ||
f1310107 TJB |
8091 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
8092 | ranged breakpoints. */ | |
8093 | ||
8094 | static int | |
8095 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
8096 | struct address_space *aspace, | |
8097 | CORE_ADDR bp_addr) | |
8098 | { | |
8099 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, | |
8100 | bl->length, aspace, bp_addr); | |
8101 | } | |
8102 | ||
8103 | /* Implement the "resources_needed" breakpoint_ops method for | |
8104 | ranged breakpoints. */ | |
8105 | ||
8106 | static int | |
8107 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
8108 | { | |
8109 | return target_ranged_break_num_registers (); | |
8110 | } | |
8111 | ||
8112 | /* Implement the "print_it" breakpoint_ops method for | |
8113 | ranged breakpoints. */ | |
8114 | ||
8115 | static enum print_stop_action | |
348d480f | 8116 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 8117 | { |
348d480f | 8118 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 8119 | struct bp_location *bl = b->loc; |
79a45e25 | 8120 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
8121 | |
8122 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8123 | ||
8124 | /* Ranged breakpoints have only one location. */ | |
8125 | gdb_assert (bl && bl->next == NULL); | |
8126 | ||
8127 | annotate_breakpoint (b->number); | |
8128 | if (b->disposition == disp_del) | |
8129 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
8130 | else | |
8131 | ui_out_text (uiout, "\nRanged breakpoint "); | |
8132 | if (ui_out_is_mi_like_p (uiout)) | |
8133 | { | |
8134 | ui_out_field_string (uiout, "reason", | |
8135 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
8136 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8137 | } | |
8138 | ui_out_field_int (uiout, "bkptno", b->number); | |
8139 | ui_out_text (uiout, ", "); | |
8140 | ||
8141 | return PRINT_SRC_AND_LOC; | |
8142 | } | |
8143 | ||
8144 | /* Implement the "print_one" breakpoint_ops method for | |
8145 | ranged breakpoints. */ | |
8146 | ||
8147 | static void | |
8148 | print_one_ranged_breakpoint (struct breakpoint *b, | |
8149 | struct bp_location **last_loc) | |
8150 | { | |
8151 | struct bp_location *bl = b->loc; | |
8152 | struct value_print_options opts; | |
79a45e25 | 8153 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
8154 | |
8155 | /* Ranged breakpoints have only one location. */ | |
8156 | gdb_assert (bl && bl->next == NULL); | |
8157 | ||
8158 | get_user_print_options (&opts); | |
8159 | ||
8160 | if (opts.addressprint) | |
8161 | /* We don't print the address range here, it will be printed later | |
8162 | by print_one_detail_ranged_breakpoint. */ | |
8163 | ui_out_field_skip (uiout, "addr"); | |
8164 | annotate_field (5); | |
8165 | print_breakpoint_location (b, bl); | |
8166 | *last_loc = bl; | |
8167 | } | |
8168 | ||
8169 | /* Implement the "print_one_detail" breakpoint_ops method for | |
8170 | ranged breakpoints. */ | |
8171 | ||
8172 | static void | |
8173 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
8174 | struct ui_out *uiout) | |
8175 | { | |
8176 | CORE_ADDR address_start, address_end; | |
8177 | struct bp_location *bl = b->loc; | |
8178 | struct ui_stream *stb = ui_out_stream_new (uiout); | |
8179 | struct cleanup *cleanup = make_cleanup_ui_out_stream_delete (stb); | |
8180 | ||
8181 | gdb_assert (bl); | |
8182 | ||
8183 | address_start = bl->address; | |
8184 | address_end = address_start + bl->length - 1; | |
8185 | ||
8186 | ui_out_text (uiout, "\taddress range: "); | |
8187 | fprintf_unfiltered (stb->stream, "[%s, %s]", | |
8188 | print_core_address (bl->gdbarch, address_start), | |
8189 | print_core_address (bl->gdbarch, address_end)); | |
8190 | ui_out_field_stream (uiout, "addr", stb); | |
8191 | ui_out_text (uiout, "\n"); | |
8192 | ||
8193 | do_cleanups (cleanup); | |
8194 | } | |
8195 | ||
8196 | /* Implement the "print_mention" breakpoint_ops method for | |
8197 | ranged breakpoints. */ | |
8198 | ||
8199 | static void | |
8200 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
8201 | { | |
8202 | struct bp_location *bl = b->loc; | |
79a45e25 | 8203 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
8204 | |
8205 | gdb_assert (bl); | |
8206 | gdb_assert (b->type == bp_hardware_breakpoint); | |
8207 | ||
8208 | if (ui_out_is_mi_like_p (uiout)) | |
8209 | return; | |
8210 | ||
8211 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
8212 | b->number, paddress (bl->gdbarch, bl->address), | |
8213 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
8214 | } | |
8215 | ||
8216 | /* Implement the "print_recreate" breakpoint_ops method for | |
8217 | ranged breakpoints. */ | |
8218 | ||
8219 | static void | |
8220 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
8221 | { | |
8222 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
8223 | b->addr_string_range_end); | |
d9b3f62e | 8224 | print_recreate_thread (b, fp); |
f1310107 TJB |
8225 | } |
8226 | ||
8227 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
8228 | ||
2060206e | 8229 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
8230 | |
8231 | /* Find the address where the end of the breakpoint range should be | |
8232 | placed, given the SAL of the end of the range. This is so that if | |
8233 | the user provides a line number, the end of the range is set to the | |
8234 | last instruction of the given line. */ | |
8235 | ||
8236 | static CORE_ADDR | |
8237 | find_breakpoint_range_end (struct symtab_and_line sal) | |
8238 | { | |
8239 | CORE_ADDR end; | |
8240 | ||
8241 | /* If the user provided a PC value, use it. Otherwise, | |
8242 | find the address of the end of the given location. */ | |
8243 | if (sal.explicit_pc) | |
8244 | end = sal.pc; | |
8245 | else | |
8246 | { | |
8247 | int ret; | |
8248 | CORE_ADDR start; | |
8249 | ||
8250 | ret = find_line_pc_range (sal, &start, &end); | |
8251 | if (!ret) | |
8252 | error (_("Could not find location of the end of the range.")); | |
8253 | ||
8254 | /* find_line_pc_range returns the start of the next line. */ | |
8255 | end--; | |
8256 | } | |
8257 | ||
8258 | return end; | |
8259 | } | |
8260 | ||
8261 | /* Implement the "break-range" CLI command. */ | |
8262 | ||
8263 | static void | |
8264 | break_range_command (char *arg, int from_tty) | |
8265 | { | |
8266 | char *arg_start, *addr_string_start, *addr_string_end; | |
8267 | struct linespec_result canonical_start, canonical_end; | |
8268 | int bp_count, can_use_bp, length; | |
8269 | CORE_ADDR end; | |
8270 | struct breakpoint *b; | |
8271 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 8272 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 8273 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
8274 | |
8275 | /* We don't support software ranged breakpoints. */ | |
8276 | if (target_ranged_break_num_registers () < 0) | |
8277 | error (_("This target does not support hardware ranged breakpoints.")); | |
8278 | ||
8279 | bp_count = hw_breakpoint_used_count (); | |
8280 | bp_count += target_ranged_break_num_registers (); | |
8281 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
8282 | bp_count, 0); | |
8283 | if (can_use_bp < 0) | |
8284 | error (_("Hardware breakpoints used exceeds limit.")); | |
8285 | ||
f8eba3c6 | 8286 | arg = skip_spaces (arg); |
f1310107 TJB |
8287 | if (arg == NULL || arg[0] == '\0') |
8288 | error(_("No address range specified.")); | |
8289 | ||
f1310107 TJB |
8290 | init_linespec_result (&canonical_start); |
8291 | ||
f8eba3c6 TT |
8292 | arg_start = arg; |
8293 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 8294 | |
f8eba3c6 | 8295 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
8296 | |
8297 | if (arg[0] != ',') | |
8298 | error (_("Too few arguments.")); | |
f8eba3c6 | 8299 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 8300 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
8301 | |
8302 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
8303 | ||
8304 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
8305 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
8306 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
8307 | ||
f8eba3c6 TT |
8308 | sal_start = lsal_start->sals.sals[0]; |
8309 | addr_string_start = savestring (arg_start, arg - arg_start); | |
8310 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
8311 | |
8312 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 8313 | arg = skip_spaces (arg); |
f1310107 TJB |
8314 | |
8315 | /* Parse the end location. */ | |
8316 | ||
f1310107 TJB |
8317 | init_linespec_result (&canonical_end); |
8318 | arg_start = arg; | |
8319 | ||
f8eba3c6 | 8320 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
8321 | parse_breakpoint_sals because we need to specify the start location's |
8322 | symtab and line as the default symtab and line for the end of the | |
8323 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
8324 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
8325 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
8326 | sal_start.symtab, sal_start.line, | |
8327 | &canonical_end, NULL, NULL); | |
8328 | ||
8329 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 8330 | |
f8eba3c6 | 8331 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 8332 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
8333 | |
8334 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
8335 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
8336 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
8337 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
8338 | ||
f8eba3c6 TT |
8339 | sal_end = lsal_end->sals.sals[0]; |
8340 | addr_string_end = savestring (arg_start, arg - arg_start); | |
8341 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
8342 | |
8343 | end = find_breakpoint_range_end (sal_end); | |
8344 | if (sal_start.pc > end) | |
177b42fe | 8345 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
8346 | |
8347 | length = end - sal_start.pc + 1; | |
8348 | if (length < 0) | |
8349 | /* Length overflowed. */ | |
8350 | error (_("Address range too large.")); | |
8351 | else if (length == 1) | |
8352 | { | |
8353 | /* This range is simple enough to be handled by | |
8354 | the `hbreak' command. */ | |
8355 | hbreak_command (addr_string_start, 1); | |
8356 | ||
8357 | do_cleanups (cleanup_bkpt); | |
8358 | ||
8359 | return; | |
8360 | } | |
8361 | ||
8362 | /* Now set up the breakpoint. */ | |
8363 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 8364 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
8365 | set_breakpoint_count (breakpoint_count + 1); |
8366 | b->number = breakpoint_count; | |
8367 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
8368 | b->addr_string = xstrdup (addr_string_start); |
8369 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
8370 | b->loc->length = length; |
8371 | ||
f8eba3c6 | 8372 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
8373 | |
8374 | mention (b); | |
8d3788bd | 8375 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
8376 | update_global_location_list (1); |
8377 | } | |
8378 | ||
4a64f543 MS |
8379 | /* Return non-zero if EXP is verified as constant. Returned zero |
8380 | means EXP is variable. Also the constant detection may fail for | |
8381 | some constant expressions and in such case still falsely return | |
8382 | zero. */ | |
65d79d4b SDJ |
8383 | static int |
8384 | watchpoint_exp_is_const (const struct expression *exp) | |
8385 | { | |
8386 | int i = exp->nelts; | |
8387 | ||
8388 | while (i > 0) | |
8389 | { | |
8390 | int oplenp, argsp; | |
8391 | ||
8392 | /* We are only interested in the descriptor of each element. */ | |
8393 | operator_length (exp, i, &oplenp, &argsp); | |
8394 | i -= oplenp; | |
8395 | ||
8396 | switch (exp->elts[i].opcode) | |
8397 | { | |
8398 | case BINOP_ADD: | |
8399 | case BINOP_SUB: | |
8400 | case BINOP_MUL: | |
8401 | case BINOP_DIV: | |
8402 | case BINOP_REM: | |
8403 | case BINOP_MOD: | |
8404 | case BINOP_LSH: | |
8405 | case BINOP_RSH: | |
8406 | case BINOP_LOGICAL_AND: | |
8407 | case BINOP_LOGICAL_OR: | |
8408 | case BINOP_BITWISE_AND: | |
8409 | case BINOP_BITWISE_IOR: | |
8410 | case BINOP_BITWISE_XOR: | |
8411 | case BINOP_EQUAL: | |
8412 | case BINOP_NOTEQUAL: | |
8413 | case BINOP_LESS: | |
8414 | case BINOP_GTR: | |
8415 | case BINOP_LEQ: | |
8416 | case BINOP_GEQ: | |
8417 | case BINOP_REPEAT: | |
8418 | case BINOP_COMMA: | |
8419 | case BINOP_EXP: | |
8420 | case BINOP_MIN: | |
8421 | case BINOP_MAX: | |
8422 | case BINOP_INTDIV: | |
8423 | case BINOP_CONCAT: | |
8424 | case BINOP_IN: | |
8425 | case BINOP_RANGE: | |
8426 | case TERNOP_COND: | |
8427 | case TERNOP_SLICE: | |
8428 | case TERNOP_SLICE_COUNT: | |
8429 | ||
8430 | case OP_LONG: | |
8431 | case OP_DOUBLE: | |
8432 | case OP_DECFLOAT: | |
8433 | case OP_LAST: | |
8434 | case OP_COMPLEX: | |
8435 | case OP_STRING: | |
8436 | case OP_BITSTRING: | |
8437 | case OP_ARRAY: | |
8438 | case OP_TYPE: | |
8439 | case OP_NAME: | |
8440 | case OP_OBJC_NSSTRING: | |
8441 | ||
8442 | case UNOP_NEG: | |
8443 | case UNOP_LOGICAL_NOT: | |
8444 | case UNOP_COMPLEMENT: | |
8445 | case UNOP_ADDR: | |
8446 | case UNOP_HIGH: | |
4a64f543 MS |
8447 | /* Unary, binary and ternary operators: We have to check |
8448 | their operands. If they are constant, then so is the | |
8449 | result of that operation. For instance, if A and B are | |
8450 | determined to be constants, then so is "A + B". | |
8451 | ||
8452 | UNOP_IND is one exception to the rule above, because the | |
8453 | value of *ADDR is not necessarily a constant, even when | |
8454 | ADDR is. */ | |
65d79d4b SDJ |
8455 | break; |
8456 | ||
8457 | case OP_VAR_VALUE: | |
8458 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 8459 | |
65d79d4b | 8460 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
8461 | possible that a buggy compiler could mark a variable as |
8462 | constant even when it is not, and TYPE_CONST would return | |
8463 | true in this case, while SYMBOL_CLASS wouldn't. | |
8464 | ||
8465 | We also have to check for function symbols because they | |
8466 | are always constant. */ | |
65d79d4b SDJ |
8467 | { |
8468 | struct symbol *s = exp->elts[i + 2].symbol; | |
8469 | ||
8470 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
8471 | && SYMBOL_CLASS (s) != LOC_CONST | |
8472 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
8473 | return 0; | |
8474 | break; | |
8475 | } | |
8476 | ||
8477 | /* The default action is to return 0 because we are using | |
8478 | the optimistic approach here: If we don't know something, | |
8479 | then it is not a constant. */ | |
8480 | default: | |
8481 | return 0; | |
8482 | } | |
8483 | } | |
8484 | ||
8485 | return 1; | |
8486 | } | |
8487 | ||
3a5c3e22 PA |
8488 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
8489 | ||
8490 | static void | |
8491 | dtor_watchpoint (struct breakpoint *self) | |
8492 | { | |
8493 | struct watchpoint *w = (struct watchpoint *) self; | |
8494 | ||
8495 | xfree (w->cond_exp); | |
8496 | xfree (w->exp); | |
8497 | xfree (w->exp_string); | |
8498 | xfree (w->exp_string_reparse); | |
8499 | value_free (w->val); | |
8500 | ||
8501 | base_breakpoint_ops.dtor (self); | |
8502 | } | |
8503 | ||
348d480f PA |
8504 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
8505 | ||
8506 | static void | |
8507 | re_set_watchpoint (struct breakpoint *b) | |
8508 | { | |
3a5c3e22 PA |
8509 | struct watchpoint *w = (struct watchpoint *) b; |
8510 | ||
348d480f PA |
8511 | /* Watchpoint can be either on expression using entirely global |
8512 | variables, or it can be on local variables. | |
8513 | ||
8514 | Watchpoints of the first kind are never auto-deleted, and even | |
8515 | persist across program restarts. Since they can use variables | |
8516 | from shared libraries, we need to reparse expression as libraries | |
8517 | are loaded and unloaded. | |
8518 | ||
8519 | Watchpoints on local variables can also change meaning as result | |
8520 | of solib event. For example, if a watchpoint uses both a local | |
8521 | and a global variables in expression, it's a local watchpoint, | |
8522 | but unloading of a shared library will make the expression | |
8523 | invalid. This is not a very common use case, but we still | |
8524 | re-evaluate expression, to avoid surprises to the user. | |
8525 | ||
8526 | Note that for local watchpoints, we re-evaluate it only if | |
8527 | watchpoints frame id is still valid. If it's not, it means the | |
8528 | watchpoint is out of scope and will be deleted soon. In fact, | |
8529 | I'm not sure we'll ever be called in this case. | |
8530 | ||
8531 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 8532 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 8533 | |
3a5c3e22 PA |
8534 | Don't do anything about disabled watchpoints, since they will be |
8535 | reevaluated again when enabled. */ | |
8536 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
8537 | } |
8538 | ||
77b06cd7 TJB |
8539 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
8540 | ||
8541 | static int | |
8542 | insert_watchpoint (struct bp_location *bl) | |
8543 | { | |
3a5c3e22 PA |
8544 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8545 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
8546 | |
8547 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 8548 | w->cond_exp); |
77b06cd7 TJB |
8549 | } |
8550 | ||
8551 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
8552 | ||
8553 | static int | |
8554 | remove_watchpoint (struct bp_location *bl) | |
8555 | { | |
3a5c3e22 PA |
8556 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8557 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
8558 | |
8559 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 8560 | w->cond_exp); |
e09342b5 TJB |
8561 | } |
8562 | ||
e09342b5 | 8563 | static int |
348d480f PA |
8564 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
8565 | struct address_space *aspace, CORE_ADDR bp_addr) | |
e09342b5 | 8566 | { |
348d480f | 8567 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 8568 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 8569 | |
348d480f PA |
8570 | /* Continuable hardware watchpoints are treated as non-existent if the |
8571 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
8572 | some data address). Otherwise gdb won't stop on a break instruction | |
8573 | in the code (not from a breakpoint) when a hardware watchpoint has | |
8574 | been defined. Also skip watchpoints which we know did not trigger | |
8575 | (did not match the data address). */ | |
8576 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 8577 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 8578 | return 0; |
9c06b0b4 | 8579 | |
348d480f | 8580 | return 1; |
9c06b0b4 TJB |
8581 | } |
8582 | ||
348d480f PA |
8583 | static void |
8584 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 8585 | { |
348d480f | 8586 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 8587 | |
348d480f | 8588 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
8589 | } |
8590 | ||
8591 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 8592 | hardware watchpoints. */ |
9c06b0b4 TJB |
8593 | |
8594 | static int | |
348d480f | 8595 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 8596 | { |
3a5c3e22 PA |
8597 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8598 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
8599 | |
8600 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
8601 | } |
8602 | ||
8603 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 8604 | hardware watchpoints. */ |
9c06b0b4 TJB |
8605 | |
8606 | static int | |
348d480f | 8607 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 8608 | { |
efa80663 PA |
8609 | /* Read and access watchpoints only work with hardware support. */ |
8610 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
8611 | } |
8612 | ||
9c06b0b4 | 8613 | static enum print_stop_action |
348d480f | 8614 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 8615 | { |
348d480f PA |
8616 | struct cleanup *old_chain; |
8617 | struct breakpoint *b; | |
8618 | const struct bp_location *bl; | |
8619 | struct ui_stream *stb; | |
8620 | enum print_stop_action result; | |
3a5c3e22 | 8621 | struct watchpoint *w; |
79a45e25 | 8622 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8623 | |
8624 | gdb_assert (bs->bp_location_at != NULL); | |
8625 | ||
8626 | bl = bs->bp_location_at; | |
8627 | b = bs->breakpoint_at; | |
3a5c3e22 | 8628 | w = (struct watchpoint *) b; |
348d480f PA |
8629 | |
8630 | stb = ui_out_stream_new (uiout); | |
8631 | old_chain = make_cleanup_ui_out_stream_delete (stb); | |
9c06b0b4 TJB |
8632 | |
8633 | switch (b->type) | |
8634 | { | |
348d480f | 8635 | case bp_watchpoint: |
9c06b0b4 TJB |
8636 | case bp_hardware_watchpoint: |
8637 | annotate_watchpoint (b->number); | |
8638 | if (ui_out_is_mi_like_p (uiout)) | |
8639 | ui_out_field_string | |
8640 | (uiout, "reason", | |
8641 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
8642 | mention (b); |
8643 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8644 | ui_out_text (uiout, "\nOld value = "); | |
8645 | watchpoint_value_print (bs->old_val, stb->stream); | |
8646 | ui_out_field_stream (uiout, "old", stb); | |
8647 | ui_out_text (uiout, "\nNew value = "); | |
3a5c3e22 | 8648 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8649 | ui_out_field_stream (uiout, "new", stb); |
8650 | ui_out_text (uiout, "\n"); | |
8651 | /* More than one watchpoint may have been triggered. */ | |
8652 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8653 | break; |
8654 | ||
8655 | case bp_read_watchpoint: | |
8656 | if (ui_out_is_mi_like_p (uiout)) | |
8657 | ui_out_field_string | |
8658 | (uiout, "reason", | |
8659 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
8660 | mention (b); |
8661 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8662 | ui_out_text (uiout, "\nValue = "); | |
3a5c3e22 | 8663 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8664 | ui_out_field_stream (uiout, "value", stb); |
8665 | ui_out_text (uiout, "\n"); | |
8666 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8667 | break; |
8668 | ||
8669 | case bp_access_watchpoint: | |
348d480f PA |
8670 | if (bs->old_val != NULL) |
8671 | { | |
8672 | annotate_watchpoint (b->number); | |
8673 | if (ui_out_is_mi_like_p (uiout)) | |
8674 | ui_out_field_string | |
8675 | (uiout, "reason", | |
8676 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8677 | mention (b); | |
8678 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8679 | ui_out_text (uiout, "\nOld value = "); | |
8680 | watchpoint_value_print (bs->old_val, stb->stream); | |
8681 | ui_out_field_stream (uiout, "old", stb); | |
8682 | ui_out_text (uiout, "\nNew value = "); | |
8683 | } | |
8684 | else | |
8685 | { | |
8686 | mention (b); | |
8687 | if (ui_out_is_mi_like_p (uiout)) | |
8688 | ui_out_field_string | |
8689 | (uiout, "reason", | |
8690 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8691 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
8692 | ui_out_text (uiout, "\nValue = "); | |
8693 | } | |
3a5c3e22 | 8694 | watchpoint_value_print (w->val, stb->stream); |
348d480f PA |
8695 | ui_out_field_stream (uiout, "new", stb); |
8696 | ui_out_text (uiout, "\n"); | |
8697 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
8698 | break; |
8699 | default: | |
348d480f | 8700 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
8701 | } |
8702 | ||
348d480f PA |
8703 | do_cleanups (old_chain); |
8704 | return result; | |
8705 | } | |
8706 | ||
8707 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
8708 | watchpoints. */ | |
8709 | ||
8710 | static void | |
8711 | print_mention_watchpoint (struct breakpoint *b) | |
8712 | { | |
8713 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 8714 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 8715 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8716 | |
8717 | switch (b->type) | |
8718 | { | |
8719 | case bp_watchpoint: | |
8720 | ui_out_text (uiout, "Watchpoint "); | |
8721 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8722 | break; | |
8723 | case bp_hardware_watchpoint: | |
8724 | ui_out_text (uiout, "Hardware watchpoint "); | |
8725 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8726 | break; | |
8727 | case bp_read_watchpoint: | |
8728 | ui_out_text (uiout, "Hardware read watchpoint "); | |
8729 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
8730 | break; | |
8731 | case bp_access_watchpoint: | |
8732 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
8733 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
8734 | break; | |
8735 | default: | |
8736 | internal_error (__FILE__, __LINE__, | |
8737 | _("Invalid hardware watchpoint type.")); | |
8738 | } | |
8739 | ||
8740 | ui_out_field_int (uiout, "number", b->number); | |
8741 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 8742 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
8743 | do_cleanups (ui_out_chain); |
8744 | } | |
8745 | ||
8746 | /* Implement the "print_recreate" breakpoint_ops method for | |
8747 | watchpoints. */ | |
8748 | ||
8749 | static void | |
8750 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
8751 | { | |
3a5c3e22 PA |
8752 | struct watchpoint *w = (struct watchpoint *) b; |
8753 | ||
348d480f PA |
8754 | switch (b->type) |
8755 | { | |
8756 | case bp_watchpoint: | |
8757 | case bp_hardware_watchpoint: | |
8758 | fprintf_unfiltered (fp, "watch"); | |
8759 | break; | |
8760 | case bp_read_watchpoint: | |
8761 | fprintf_unfiltered (fp, "rwatch"); | |
8762 | break; | |
8763 | case bp_access_watchpoint: | |
8764 | fprintf_unfiltered (fp, "awatch"); | |
8765 | break; | |
8766 | default: | |
8767 | internal_error (__FILE__, __LINE__, | |
8768 | _("Invalid watchpoint type.")); | |
8769 | } | |
8770 | ||
3a5c3e22 | 8771 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 8772 | print_recreate_thread (b, fp); |
348d480f PA |
8773 | } |
8774 | ||
8775 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
8776 | ||
2060206e | 8777 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
8778 | |
8779 | /* Implement the "insert" breakpoint_ops method for | |
8780 | masked hardware watchpoints. */ | |
8781 | ||
8782 | static int | |
8783 | insert_masked_watchpoint (struct bp_location *bl) | |
8784 | { | |
3a5c3e22 PA |
8785 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8786 | ||
8787 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
8788 | bl->watchpoint_type); |
8789 | } | |
8790 | ||
8791 | /* Implement the "remove" breakpoint_ops method for | |
8792 | masked hardware watchpoints. */ | |
8793 | ||
8794 | static int | |
8795 | remove_masked_watchpoint (struct bp_location *bl) | |
8796 | { | |
3a5c3e22 PA |
8797 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8798 | ||
8799 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
8800 | bl->watchpoint_type); |
8801 | } | |
8802 | ||
8803 | /* Implement the "resources_needed" breakpoint_ops method for | |
8804 | masked hardware watchpoints. */ | |
8805 | ||
8806 | static int | |
8807 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
8808 | { | |
3a5c3e22 PA |
8809 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
8810 | ||
8811 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
8812 | } |
8813 | ||
8814 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
8815 | masked hardware watchpoints. */ | |
8816 | ||
8817 | static int | |
8818 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
8819 | { | |
8820 | return 0; | |
8821 | } | |
8822 | ||
8823 | /* Implement the "print_it" breakpoint_ops method for | |
8824 | masked hardware watchpoints. */ | |
8825 | ||
8826 | static enum print_stop_action | |
8827 | print_it_masked_watchpoint (bpstat bs) | |
8828 | { | |
8829 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 8830 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8831 | |
8832 | /* Masked watchpoints have only one location. */ | |
8833 | gdb_assert (b->loc && b->loc->next == NULL); | |
8834 | ||
8835 | switch (b->type) | |
8836 | { | |
8837 | case bp_hardware_watchpoint: | |
8838 | annotate_watchpoint (b->number); | |
8839 | if (ui_out_is_mi_like_p (uiout)) | |
8840 | ui_out_field_string | |
8841 | (uiout, "reason", | |
8842 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
8843 | break; | |
8844 | ||
8845 | case bp_read_watchpoint: | |
8846 | if (ui_out_is_mi_like_p (uiout)) | |
8847 | ui_out_field_string | |
8848 | (uiout, "reason", | |
8849 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
8850 | break; | |
8851 | ||
8852 | case bp_access_watchpoint: | |
8853 | if (ui_out_is_mi_like_p (uiout)) | |
8854 | ui_out_field_string | |
8855 | (uiout, "reason", | |
8856 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
8857 | break; | |
8858 | default: | |
8859 | internal_error (__FILE__, __LINE__, | |
8860 | _("Invalid hardware watchpoint type.")); | |
8861 | } | |
8862 | ||
8863 | mention (b); | |
9c06b0b4 TJB |
8864 | ui_out_text (uiout, _("\n\ |
8865 | Check the underlying instruction at PC for the memory\n\ | |
8866 | address and value which triggered this watchpoint.\n")); | |
8867 | ui_out_text (uiout, "\n"); | |
8868 | ||
8869 | /* More than one watchpoint may have been triggered. */ | |
8870 | return PRINT_UNKNOWN; | |
8871 | } | |
8872 | ||
8873 | /* Implement the "print_one_detail" breakpoint_ops method for | |
8874 | masked hardware watchpoints. */ | |
8875 | ||
8876 | static void | |
8877 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
8878 | struct ui_out *uiout) | |
8879 | { | |
3a5c3e22 PA |
8880 | struct watchpoint *w = (struct watchpoint *) b; |
8881 | ||
9c06b0b4 TJB |
8882 | /* Masked watchpoints have only one location. */ |
8883 | gdb_assert (b->loc && b->loc->next == NULL); | |
8884 | ||
8885 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 8886 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
8887 | ui_out_text (uiout, "\n"); |
8888 | } | |
8889 | ||
8890 | /* Implement the "print_mention" breakpoint_ops method for | |
8891 | masked hardware watchpoints. */ | |
8892 | ||
8893 | static void | |
8894 | print_mention_masked_watchpoint (struct breakpoint *b) | |
8895 | { | |
3a5c3e22 | 8896 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 8897 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
8898 | struct cleanup *ui_out_chain; |
8899 | ||
8900 | switch (b->type) | |
8901 | { | |
8902 | case bp_hardware_watchpoint: | |
8903 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
8904 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
8905 | break; | |
8906 | case bp_read_watchpoint: | |
8907 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
8908 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
8909 | break; | |
8910 | case bp_access_watchpoint: | |
8911 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
8912 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
8913 | break; | |
8914 | default: | |
8915 | internal_error (__FILE__, __LINE__, | |
8916 | _("Invalid hardware watchpoint type.")); | |
8917 | } | |
8918 | ||
8919 | ui_out_field_int (uiout, "number", b->number); | |
8920 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 8921 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
8922 | do_cleanups (ui_out_chain); |
8923 | } | |
8924 | ||
8925 | /* Implement the "print_recreate" breakpoint_ops method for | |
8926 | masked hardware watchpoints. */ | |
8927 | ||
8928 | static void | |
8929 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
8930 | { | |
3a5c3e22 | 8931 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
8932 | char tmp[40]; |
8933 | ||
8934 | switch (b->type) | |
8935 | { | |
8936 | case bp_hardware_watchpoint: | |
8937 | fprintf_unfiltered (fp, "watch"); | |
8938 | break; | |
8939 | case bp_read_watchpoint: | |
8940 | fprintf_unfiltered (fp, "rwatch"); | |
8941 | break; | |
8942 | case bp_access_watchpoint: | |
8943 | fprintf_unfiltered (fp, "awatch"); | |
8944 | break; | |
8945 | default: | |
8946 | internal_error (__FILE__, __LINE__, | |
8947 | _("Invalid hardware watchpoint type.")); | |
8948 | } | |
8949 | ||
3a5c3e22 PA |
8950 | sprintf_vma (tmp, w->hw_wp_mask); |
8951 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 8952 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
8953 | } |
8954 | ||
8955 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
8956 | ||
2060206e | 8957 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
8958 | |
8959 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
8960 | ||
8961 | static int | |
8962 | is_masked_watchpoint (const struct breakpoint *b) | |
8963 | { | |
8964 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
8965 | } | |
8966 | ||
53a5351d JM |
8967 | /* accessflag: hw_write: watch write, |
8968 | hw_read: watch read, | |
8969 | hw_access: watch access (read or write) */ | |
c906108c | 8970 | static void |
84f4c1fe PM |
8971 | watch_command_1 (char *arg, int accessflag, int from_tty, |
8972 | int just_location, int internal) | |
c906108c | 8973 | { |
a9634178 | 8974 | volatile struct gdb_exception e; |
d983da9c | 8975 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 8976 | struct expression *exp; |
60e1c644 | 8977 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 8978 | struct value *val, *mark, *result; |
c906108c | 8979 | struct frame_info *frame; |
c906108c SS |
8980 | char *exp_start = NULL; |
8981 | char *exp_end = NULL; | |
9c06b0b4 TJB |
8982 | char *tok, *end_tok; |
8983 | int toklen = -1; | |
c906108c SS |
8984 | char *cond_start = NULL; |
8985 | char *cond_end = NULL; | |
c906108c | 8986 | enum bptype bp_type; |
37e4754d | 8987 | int thread = -1; |
0cf6dd15 | 8988 | int pc = 0; |
9c06b0b4 TJB |
8989 | /* Flag to indicate whether we are going to use masks for |
8990 | the hardware watchpoint. */ | |
8991 | int use_mask = 0; | |
8992 | CORE_ADDR mask = 0; | |
3a5c3e22 | 8993 | struct watchpoint *w; |
c906108c | 8994 | |
37e4754d LM |
8995 | /* Make sure that we actually have parameters to parse. */ |
8996 | if (arg != NULL && arg[0] != '\0') | |
8997 | { | |
9c06b0b4 | 8998 | char *value_start; |
37e4754d | 8999 | |
9c06b0b4 TJB |
9000 | /* Look for "parameter value" pairs at the end |
9001 | of the arguments string. */ | |
9002 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
9003 | { | |
9004 | /* Skip whitespace at the end of the argument list. */ | |
9005 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9006 | tok--; | |
9007 | ||
9008 | /* Find the beginning of the last token. | |
9009 | This is the value of the parameter. */ | |
9010 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9011 | tok--; | |
9012 | value_start = tok + 1; | |
9013 | ||
9014 | /* Skip whitespace. */ | |
9015 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
9016 | tok--; | |
9017 | ||
9018 | end_tok = tok; | |
9019 | ||
9020 | /* Find the beginning of the second to last token. | |
9021 | This is the parameter itself. */ | |
9022 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
9023 | tok--; | |
9024 | tok++; | |
9025 | toklen = end_tok - tok + 1; | |
9026 | ||
9027 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
9028 | { | |
9029 | /* At this point we've found a "thread" token, which means | |
9030 | the user is trying to set a watchpoint that triggers | |
9031 | only in a specific thread. */ | |
9032 | char *endp; | |
37e4754d | 9033 | |
9c06b0b4 TJB |
9034 | if (thread != -1) |
9035 | error(_("You can specify only one thread.")); | |
37e4754d | 9036 | |
9c06b0b4 TJB |
9037 | /* Extract the thread ID from the next token. */ |
9038 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 9039 | |
9c06b0b4 TJB |
9040 | /* Check if the user provided a valid numeric value for the |
9041 | thread ID. */ | |
9042 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
9043 | error (_("Invalid thread ID specification %s."), value_start); | |
9044 | ||
9045 | /* Check if the thread actually exists. */ | |
9046 | if (!valid_thread_id (thread)) | |
9047 | error (_("Unknown thread %d."), thread); | |
9048 | } | |
9049 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
9050 | { | |
9051 | /* We've found a "mask" token, which means the user wants to | |
9052 | create a hardware watchpoint that is going to have the mask | |
9053 | facility. */ | |
9054 | struct value *mask_value, *mark; | |
37e4754d | 9055 | |
9c06b0b4 TJB |
9056 | if (use_mask) |
9057 | error(_("You can specify only one mask.")); | |
37e4754d | 9058 | |
9c06b0b4 | 9059 | use_mask = just_location = 1; |
37e4754d | 9060 | |
9c06b0b4 TJB |
9061 | mark = value_mark (); |
9062 | mask_value = parse_to_comma_and_eval (&value_start); | |
9063 | mask = value_as_address (mask_value); | |
9064 | value_free_to_mark (mark); | |
9065 | } | |
9066 | else | |
9067 | /* We didn't recognize what we found. We should stop here. */ | |
9068 | break; | |
37e4754d | 9069 | |
9c06b0b4 TJB |
9070 | /* Truncate the string and get rid of the "parameter value" pair before |
9071 | the arguments string is parsed by the parse_exp_1 function. */ | |
9072 | *tok = '\0'; | |
9073 | } | |
37e4754d LM |
9074 | } |
9075 | ||
9076 | /* Parse the rest of the arguments. */ | |
c906108c SS |
9077 | innermost_block = NULL; |
9078 | exp_start = arg; | |
9079 | exp = parse_exp_1 (&arg, 0, 0); | |
9080 | exp_end = arg; | |
fa8a61dc TT |
9081 | /* Remove trailing whitespace from the expression before saving it. |
9082 | This makes the eventual display of the expression string a bit | |
9083 | prettier. */ | |
9084 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
9085 | --exp_end; | |
9086 | ||
65d79d4b SDJ |
9087 | /* Checking if the expression is not constant. */ |
9088 | if (watchpoint_exp_is_const (exp)) | |
9089 | { | |
9090 | int len; | |
9091 | ||
9092 | len = exp_end - exp_start; | |
9093 | while (len > 0 && isspace (exp_start[len - 1])) | |
9094 | len--; | |
9095 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
9096 | } | |
9097 | ||
c906108c SS |
9098 | exp_valid_block = innermost_block; |
9099 | mark = value_mark (); | |
a1442452 | 9100 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
9101 | |
9102 | if (just_location) | |
9103 | { | |
9c06b0b4 TJB |
9104 | int ret; |
9105 | ||
06a64a0b | 9106 | exp_valid_block = NULL; |
a1442452 | 9107 | val = value_addr (result); |
06a64a0b TT |
9108 | release_value (val); |
9109 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
9110 | |
9111 | if (use_mask) | |
9112 | { | |
9113 | ret = target_masked_watch_num_registers (value_as_address (val), | |
9114 | mask); | |
9115 | if (ret == -1) | |
9116 | error (_("This target does not support masked watchpoints.")); | |
9117 | else if (ret == -2) | |
9118 | error (_("Invalid mask or memory region.")); | |
9119 | } | |
06a64a0b TT |
9120 | } |
9121 | else if (val != NULL) | |
fa4727a6 | 9122 | release_value (val); |
c906108c | 9123 | |
e9cafbcc TT |
9124 | tok = skip_spaces (arg); |
9125 | end_tok = skip_to_space (tok); | |
c906108c SS |
9126 | |
9127 | toklen = end_tok - tok; | |
9128 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
9129 | { | |
2d134ed3 PA |
9130 | struct expression *cond; |
9131 | ||
60e1c644 | 9132 | innermost_block = NULL; |
c906108c SS |
9133 | tok = cond_start = end_tok + 1; |
9134 | cond = parse_exp_1 (&tok, 0, 0); | |
60e1c644 PA |
9135 | |
9136 | /* The watchpoint expression may not be local, but the condition | |
9137 | may still be. E.g.: `watch global if local > 0'. */ | |
9138 | cond_exp_valid_block = innermost_block; | |
9139 | ||
2d134ed3 | 9140 | xfree (cond); |
c906108c SS |
9141 | cond_end = tok; |
9142 | } | |
9143 | if (*tok) | |
8a3fe4f8 | 9144 | error (_("Junk at end of command.")); |
c906108c | 9145 | |
53a5351d | 9146 | if (accessflag == hw_read) |
c5aa993b | 9147 | bp_type = bp_read_watchpoint; |
53a5351d | 9148 | else if (accessflag == hw_access) |
c5aa993b JM |
9149 | bp_type = bp_access_watchpoint; |
9150 | else | |
9151 | bp_type = bp_hardware_watchpoint; | |
c906108c | 9152 | |
d983da9c | 9153 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
9154 | |
9155 | /* If the expression is "local", then set up a "watchpoint scope" | |
9156 | breakpoint at the point where we've left the scope of the watchpoint | |
9157 | expression. Create the scope breakpoint before the watchpoint, so | |
9158 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 9159 | if (exp_valid_block && frame) |
d983da9c | 9160 | { |
edb3359d DJ |
9161 | if (frame_id_p (frame_unwind_caller_id (frame))) |
9162 | { | |
9163 | scope_breakpoint | |
a6d9a66e UW |
9164 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
9165 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
9166 | bp_watchpoint_scope, |
9167 | &momentary_breakpoint_ops); | |
d983da9c | 9168 | |
edb3359d | 9169 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 9170 | |
edb3359d DJ |
9171 | /* Automatically delete the breakpoint when it hits. */ |
9172 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 9173 | |
edb3359d DJ |
9174 | /* Only break in the proper frame (help with recursion). */ |
9175 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 9176 | |
edb3359d | 9177 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
9178 | scope_breakpoint->loc->gdbarch |
9179 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
9180 | scope_breakpoint->loc->requested_address |
9181 | = frame_unwind_caller_pc (frame); | |
9182 | scope_breakpoint->loc->address | |
a6d9a66e UW |
9183 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
9184 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
9185 | scope_breakpoint->type); |
9186 | } | |
d983da9c DJ |
9187 | } |
9188 | ||
c906108c | 9189 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
9190 | |
9191 | w = XCNEW (struct watchpoint); | |
9192 | b = &w->base; | |
348d480f | 9193 | if (use_mask) |
3a5c3e22 PA |
9194 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
9195 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 9196 | else |
3a5c3e22 PA |
9197 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
9198 | &watchpoint_breakpoint_ops); | |
37e4754d | 9199 | b->thread = thread; |
b5de0fa7 | 9200 | b->disposition = disp_donttouch; |
348d480f | 9201 | b->pspace = current_program_space; |
3a5c3e22 PA |
9202 | w->exp = exp; |
9203 | w->exp_valid_block = exp_valid_block; | |
9204 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
9205 | if (just_location) |
9206 | { | |
9207 | struct type *t = value_type (val); | |
9208 | CORE_ADDR addr = value_as_address (val); | |
9209 | char *name; | |
9210 | ||
9211 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
9212 | name = type_to_string (t); | |
9213 | ||
3a5c3e22 | 9214 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 9215 | core_addr_to_string (addr)); |
06a64a0b TT |
9216 | xfree (name); |
9217 | ||
3a5c3e22 | 9218 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
9219 | (int) (exp_end - exp_start), exp_start); |
9220 | ||
06a64a0b TT |
9221 | /* The above expression is in C. */ |
9222 | b->language = language_c; | |
9223 | } | |
9224 | else | |
3a5c3e22 | 9225 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
9226 | |
9227 | if (use_mask) | |
9228 | { | |
3a5c3e22 | 9229 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
9230 | } |
9231 | else | |
9232 | { | |
3a5c3e22 PA |
9233 | w->val = val; |
9234 | w->val_valid = 1; | |
9c06b0b4 | 9235 | } |
77b06cd7 | 9236 | |
c906108c SS |
9237 | if (cond_start) |
9238 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
9239 | else | |
9240 | b->cond_string = 0; | |
c5aa993b | 9241 | |
c906108c | 9242 | if (frame) |
f6bc2008 | 9243 | { |
3a5c3e22 PA |
9244 | w->watchpoint_frame = get_frame_id (frame); |
9245 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 9246 | } |
c906108c | 9247 | else |
f6bc2008 | 9248 | { |
3a5c3e22 PA |
9249 | w->watchpoint_frame = null_frame_id; |
9250 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 9251 | } |
c906108c | 9252 | |
d983da9c | 9253 | if (scope_breakpoint != NULL) |
c906108c | 9254 | { |
d983da9c DJ |
9255 | /* The scope breakpoint is related to the watchpoint. We will |
9256 | need to act on them together. */ | |
9257 | b->related_breakpoint = scope_breakpoint; | |
9258 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 9259 | } |
d983da9c | 9260 | |
06a64a0b TT |
9261 | if (!just_location) |
9262 | value_free_to_mark (mark); | |
2d134ed3 | 9263 | |
a9634178 TJB |
9264 | TRY_CATCH (e, RETURN_MASK_ALL) |
9265 | { | |
9266 | /* Finally update the new watchpoint. This creates the locations | |
9267 | that should be inserted. */ | |
3a5c3e22 | 9268 | update_watchpoint (w, 1); |
a9634178 TJB |
9269 | } |
9270 | if (e.reason < 0) | |
9271 | { | |
9272 | delete_breakpoint (b); | |
9273 | throw_exception (e); | |
9274 | } | |
9275 | ||
3ea46bff | 9276 | install_breakpoint (internal, b, 1); |
c906108c SS |
9277 | } |
9278 | ||
e09342b5 | 9279 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 9280 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 9281 | |
c906108c | 9282 | static int |
a9634178 | 9283 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
9284 | { |
9285 | int found_memory_cnt = 0; | |
2e70b7b9 | 9286 | struct value *head = v; |
c906108c SS |
9287 | |
9288 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 9289 | if (!can_use_hw_watchpoints) |
c906108c | 9290 | return 0; |
c5aa993b | 9291 | |
5c44784c JM |
9292 | /* Make sure that the value of the expression depends only upon |
9293 | memory contents, and values computed from them within GDB. If we | |
9294 | find any register references or function calls, we can't use a | |
9295 | hardware watchpoint. | |
9296 | ||
9297 | The idea here is that evaluating an expression generates a series | |
9298 | of values, one holding the value of every subexpression. (The | |
9299 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
9300 | a*b+c.) GDB's values hold almost enough information to establish | |
9301 | the criteria given above --- they identify memory lvalues, | |
9302 | register lvalues, computed values, etcetera. So we can evaluate | |
9303 | the expression, and then scan the chain of values that leaves | |
9304 | behind to decide whether we can detect any possible change to the | |
9305 | expression's final value using only hardware watchpoints. | |
9306 | ||
9307 | However, I don't think that the values returned by inferior | |
9308 | function calls are special in any way. So this function may not | |
9309 | notice that an expression involving an inferior function call | |
9310 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 9311 | for (; v; v = value_next (v)) |
c906108c | 9312 | { |
5c44784c | 9313 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 9314 | { |
8464be76 DJ |
9315 | if (v != head && value_lazy (v)) |
9316 | /* A lazy memory lvalue in the chain is one that GDB never | |
9317 | needed to fetch; we either just used its address (e.g., | |
9318 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
9319 | in `a,b'). This doesn't apply to HEAD; if that is | |
9320 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 9321 | ; |
53a5351d | 9322 | else |
5c44784c JM |
9323 | { |
9324 | /* Ahh, memory we actually used! Check if we can cover | |
9325 | it with hardware watchpoints. */ | |
df407dfe | 9326 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
9327 | |
9328 | /* We only watch structs and arrays if user asked for it | |
9329 | explicitly, never if they just happen to appear in a | |
9330 | middle of some value chain. */ | |
9331 | if (v == head | |
9332 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
9333 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
9334 | { | |
42ae5230 | 9335 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
9336 | int len; |
9337 | int num_regs; | |
9338 | ||
a9634178 | 9339 | len = (target_exact_watchpoints |
e09342b5 TJB |
9340 | && is_scalar_type_recursive (vtype))? |
9341 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 9342 | |
e09342b5 TJB |
9343 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
9344 | if (!num_regs) | |
2e70b7b9 MS |
9345 | return 0; |
9346 | else | |
e09342b5 | 9347 | found_memory_cnt += num_regs; |
2e70b7b9 | 9348 | } |
5c44784c | 9349 | } |
c5aa993b | 9350 | } |
5086187c AC |
9351 | else if (VALUE_LVAL (v) != not_lval |
9352 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 9353 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 9354 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 9355 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
9356 | } |
9357 | ||
9358 | /* The expression itself looks suitable for using a hardware | |
9359 | watchpoint, but give the target machine a chance to reject it. */ | |
9360 | return found_memory_cnt; | |
9361 | } | |
9362 | ||
8b93c638 | 9363 | void |
84f4c1fe | 9364 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9365 | { |
84f4c1fe | 9366 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
9367 | } |
9368 | ||
9369 | /* A helper function that looks for an argument at the start of a | |
9370 | string. The argument must also either be at the end of the string, | |
9371 | or be followed by whitespace. Returns 1 if it finds the argument, | |
9372 | 0 otherwise. If the argument is found, it updates *STR. */ | |
9373 | ||
9374 | static int | |
9375 | check_for_argument (char **str, char *arg, int arg_len) | |
9376 | { | |
9377 | if (strncmp (*str, arg, arg_len) == 0 | |
9378 | && ((*str)[arg_len] == '\0' || isspace ((*str)[arg_len]))) | |
9379 | { | |
9380 | *str += arg_len; | |
9381 | return 1; | |
9382 | } | |
9383 | return 0; | |
9384 | } | |
9385 | ||
9386 | /* A helper function that looks for the "-location" argument and then | |
9387 | calls watch_command_1. */ | |
9388 | ||
9389 | static void | |
9390 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
9391 | { | |
9392 | int just_location = 0; | |
9393 | ||
9394 | if (arg | |
9395 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
9396 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
9397 | { | |
e9cafbcc | 9398 | arg = skip_spaces (arg); |
06a64a0b TT |
9399 | just_location = 1; |
9400 | } | |
9401 | ||
84f4c1fe | 9402 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 9403 | } |
8926118c | 9404 | |
c5aa993b | 9405 | static void |
fba45db2 | 9406 | watch_command (char *arg, int from_tty) |
c906108c | 9407 | { |
06a64a0b | 9408 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
9409 | } |
9410 | ||
8b93c638 | 9411 | void |
84f4c1fe | 9412 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9413 | { |
84f4c1fe | 9414 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 9415 | } |
8926118c | 9416 | |
c5aa993b | 9417 | static void |
fba45db2 | 9418 | rwatch_command (char *arg, int from_tty) |
c906108c | 9419 | { |
06a64a0b | 9420 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
9421 | } |
9422 | ||
8b93c638 | 9423 | void |
84f4c1fe | 9424 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 9425 | { |
84f4c1fe | 9426 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 9427 | } |
8926118c | 9428 | |
c5aa993b | 9429 | static void |
fba45db2 | 9430 | awatch_command (char *arg, int from_tty) |
c906108c | 9431 | { |
06a64a0b | 9432 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 9433 | } |
c906108c | 9434 | \f |
c5aa993b | 9435 | |
43ff13b4 | 9436 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
9437 | because it uses the mechanisms of breakpoints. */ |
9438 | ||
bfec99b2 PA |
9439 | struct until_break_command_continuation_args |
9440 | { | |
9441 | struct breakpoint *breakpoint; | |
9442 | struct breakpoint *breakpoint2; | |
186c406b | 9443 | int thread_num; |
bfec99b2 PA |
9444 | }; |
9445 | ||
43ff13b4 | 9446 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 9447 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 9448 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 9449 | command. */ |
c2c6d25f | 9450 | static void |
fa4cd53f | 9451 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 9452 | { |
bfec99b2 PA |
9453 | struct until_break_command_continuation_args *a = arg; |
9454 | ||
9455 | delete_breakpoint (a->breakpoint); | |
9456 | if (a->breakpoint2) | |
9457 | delete_breakpoint (a->breakpoint2); | |
186c406b | 9458 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
9459 | } |
9460 | ||
c906108c | 9461 | void |
ae66c1fc | 9462 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
9463 | { |
9464 | struct symtabs_and_lines sals; | |
9465 | struct symtab_and_line sal; | |
206415a3 | 9466 | struct frame_info *frame = get_selected_frame (NULL); |
c906108c | 9467 | struct breakpoint *breakpoint; |
f107f563 | 9468 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 9469 | struct cleanup *old_chain; |
186c406b TT |
9470 | int thread; |
9471 | struct thread_info *tp; | |
c906108c SS |
9472 | |
9473 | clear_proceed_status (); | |
9474 | ||
9475 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 9476 | this function. */ |
c5aa993b | 9477 | |
1bfeeb0f | 9478 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 9479 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 9480 | get_last_displayed_symtab (), |
f8eba3c6 | 9481 | get_last_displayed_line ()); |
c906108c | 9482 | else |
f8eba3c6 TT |
9483 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
9484 | (struct symtab *) NULL, 0); | |
c5aa993b | 9485 | |
c906108c | 9486 | if (sals.nelts != 1) |
8a3fe4f8 | 9487 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 9488 | |
c906108c | 9489 | sal = sals.sals[0]; |
4a64f543 | 9490 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 9491 | |
c906108c | 9492 | if (*arg) |
8a3fe4f8 | 9493 | error (_("Junk at end of arguments.")); |
c5aa993b | 9494 | |
c906108c | 9495 | resolve_sal_pc (&sal); |
c5aa993b | 9496 | |
ae66c1fc EZ |
9497 | if (anywhere) |
9498 | /* If the user told us to continue until a specified location, | |
9499 | we don't specify a frame at which we need to stop. */ | |
a6d9a66e UW |
9500 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9501 | null_frame_id, bp_until); | |
ae66c1fc | 9502 | else |
4a64f543 MS |
9503 | /* Otherwise, specify the selected frame, because we want to stop |
9504 | only at the very same frame. */ | |
a6d9a66e UW |
9505 | breakpoint = set_momentary_breakpoint (get_frame_arch (frame), sal, |
9506 | get_stack_frame_id (frame), | |
ae66c1fc | 9507 | bp_until); |
c5aa993b | 9508 | |
f107f563 | 9509 | old_chain = make_cleanup_delete_breakpoint (breakpoint); |
c906108c | 9510 | |
186c406b TT |
9511 | tp = inferior_thread (); |
9512 | thread = tp->num; | |
9513 | ||
ae66c1fc EZ |
9514 | /* Keep within the current frame, or in frames called by the current |
9515 | one. */ | |
edb3359d DJ |
9516 | |
9517 | if (frame_id_p (frame_unwind_caller_id (frame))) | |
c906108c | 9518 | { |
edb3359d DJ |
9519 | sal = find_pc_line (frame_unwind_caller_pc (frame), 0); |
9520 | sal.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e UW |
9521 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
9522 | sal, | |
edb3359d | 9523 | frame_unwind_caller_id (frame), |
f107f563 VP |
9524 | bp_until); |
9525 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b TT |
9526 | |
9527 | set_longjmp_breakpoint (tp, frame_unwind_caller_id (frame)); | |
9528 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); | |
c906108c | 9529 | } |
c5aa993b | 9530 | |
c906108c | 9531 | proceed (-1, TARGET_SIGNAL_DEFAULT, 0); |
f107f563 | 9532 | |
4a64f543 MS |
9533 | /* If we are running asynchronously, and proceed call above has |
9534 | actually managed to start the target, arrange for breakpoints to | |
9535 | be deleted when the target stops. Otherwise, we're already | |
9536 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 9537 | |
8ea051c5 | 9538 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 9539 | { |
bfec99b2 PA |
9540 | struct until_break_command_continuation_args *args; |
9541 | args = xmalloc (sizeof (*args)); | |
f107f563 | 9542 | |
bfec99b2 PA |
9543 | args->breakpoint = breakpoint; |
9544 | args->breakpoint2 = breakpoint2; | |
186c406b | 9545 | args->thread_num = thread; |
f107f563 VP |
9546 | |
9547 | discard_cleanups (old_chain); | |
95e54da7 PA |
9548 | add_continuation (inferior_thread (), |
9549 | until_break_command_continuation, args, | |
604ead4a | 9550 | xfree); |
f107f563 VP |
9551 | } |
9552 | else | |
c5aa993b | 9553 | do_cleanups (old_chain); |
c906108c | 9554 | } |
ae66c1fc | 9555 | |
c906108c SS |
9556 | /* This function attempts to parse an optional "if <cond>" clause |
9557 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 9558 | |
c906108c SS |
9559 | Else, it returns a pointer to the condition string. (It does not |
9560 | attempt to evaluate the string against a particular block.) And, | |
9561 | it updates arg to point to the first character following the parsed | |
4a64f543 | 9562 | if clause in the arg string. */ |
53a5351d | 9563 | |
c906108c | 9564 | static char * |
fba45db2 | 9565 | ep_parse_optional_if_clause (char **arg) |
c906108c | 9566 | { |
c5aa993b JM |
9567 | char *cond_string; |
9568 | ||
9569 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 9570 | return NULL; |
c5aa993b | 9571 | |
4a64f543 | 9572 | /* Skip the "if" keyword. */ |
c906108c | 9573 | (*arg) += 2; |
c5aa993b | 9574 | |
c906108c | 9575 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 9576 | condition string. */ |
e9cafbcc | 9577 | *arg = skip_spaces (*arg); |
c906108c | 9578 | cond_string = *arg; |
c5aa993b | 9579 | |
4a64f543 MS |
9580 | /* Assume that the condition occupies the remainder of the arg |
9581 | string. */ | |
c906108c | 9582 | (*arg) += strlen (cond_string); |
c5aa993b | 9583 | |
c906108c SS |
9584 | return cond_string; |
9585 | } | |
c5aa993b | 9586 | |
c906108c SS |
9587 | /* Commands to deal with catching events, such as signals, exceptions, |
9588 | process start/exit, etc. */ | |
c5aa993b JM |
9589 | |
9590 | typedef enum | |
9591 | { | |
44feb3ce TT |
9592 | catch_fork_temporary, catch_vfork_temporary, |
9593 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
9594 | } |
9595 | catch_fork_kind; | |
9596 | ||
c906108c | 9597 | static void |
cc59ec59 MS |
9598 | catch_fork_command_1 (char *arg, int from_tty, |
9599 | struct cmd_list_element *command) | |
c906108c | 9600 | { |
a6d9a66e | 9601 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 9602 | char *cond_string = NULL; |
44feb3ce TT |
9603 | catch_fork_kind fork_kind; |
9604 | int tempflag; | |
9605 | ||
9606 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
9607 | tempflag = (fork_kind == catch_fork_temporary | |
9608 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 9609 | |
44feb3ce TT |
9610 | if (!arg) |
9611 | arg = ""; | |
e9cafbcc | 9612 | arg = skip_spaces (arg); |
c5aa993b | 9613 | |
c906108c | 9614 | /* The allowed syntax is: |
c5aa993b JM |
9615 | catch [v]fork |
9616 | catch [v]fork if <cond> | |
9617 | ||
4a64f543 | 9618 | First, check if there's an if clause. */ |
c906108c | 9619 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 9620 | |
c906108c | 9621 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 9622 | error (_("Junk at end of arguments.")); |
c5aa993b | 9623 | |
c906108c | 9624 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 9625 | and enable reporting of such events. */ |
c5aa993b JM |
9626 | switch (fork_kind) |
9627 | { | |
44feb3ce TT |
9628 | case catch_fork_temporary: |
9629 | case catch_fork_permanent: | |
a6d9a66e | 9630 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9631 | &catch_fork_breakpoint_ops); |
c906108c | 9632 | break; |
44feb3ce TT |
9633 | case catch_vfork_temporary: |
9634 | case catch_vfork_permanent: | |
a6d9a66e | 9635 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 9636 | &catch_vfork_breakpoint_ops); |
c906108c | 9637 | break; |
c5aa993b | 9638 | default: |
8a3fe4f8 | 9639 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 9640 | break; |
c5aa993b | 9641 | } |
c906108c SS |
9642 | } |
9643 | ||
9644 | static void | |
cc59ec59 MS |
9645 | catch_exec_command_1 (char *arg, int from_tty, |
9646 | struct cmd_list_element *command) | |
c906108c | 9647 | { |
b4d90040 | 9648 | struct exec_catchpoint *c; |
a6d9a66e | 9649 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 9650 | int tempflag; |
c5aa993b | 9651 | char *cond_string = NULL; |
c906108c | 9652 | |
44feb3ce TT |
9653 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
9654 | ||
9655 | if (!arg) | |
9656 | arg = ""; | |
e9cafbcc | 9657 | arg = skip_spaces (arg); |
c906108c SS |
9658 | |
9659 | /* The allowed syntax is: | |
c5aa993b JM |
9660 | catch exec |
9661 | catch exec if <cond> | |
c906108c | 9662 | |
4a64f543 | 9663 | First, check if there's an if clause. */ |
c906108c SS |
9664 | cond_string = ep_parse_optional_if_clause (&arg); |
9665 | ||
9666 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9667 | error (_("Junk at end of arguments.")); |
c906108c | 9668 | |
b4d90040 PA |
9669 | c = XNEW (struct exec_catchpoint); |
9670 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
9671 | &catch_exec_breakpoint_ops); | |
9672 | c->exec_pathname = NULL; | |
9673 | ||
3ea46bff | 9674 | install_breakpoint (0, &c->base, 1); |
c906108c | 9675 | } |
c5aa993b | 9676 | |
3086aeae | 9677 | static enum print_stop_action |
348d480f | 9678 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 9679 | { |
79a45e25 | 9680 | struct ui_out *uiout = current_uiout; |
348d480f | 9681 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 9682 | int bp_temp, bp_throw; |
3086aeae | 9683 | |
ade92717 | 9684 | annotate_catchpoint (b->number); |
3086aeae | 9685 | |
ade92717 AR |
9686 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9687 | if (b->loc->address != b->loc->requested_address) | |
9688 | breakpoint_adjustment_warning (b->loc->requested_address, | |
9689 | b->loc->address, | |
9690 | b->number, 1); | |
df2b6d2d | 9691 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9692 | ui_out_text (uiout, |
9693 | bp_temp ? "Temporary catchpoint " | |
9694 | : "Catchpoint "); | |
9695 | if (!ui_out_is_mi_like_p (uiout)) | |
9696 | ui_out_field_int (uiout, "bkptno", b->number); | |
9697 | ui_out_text (uiout, | |
c0b37c48 AR |
9698 | bp_throw ? " (exception thrown), " |
9699 | : " (exception caught), "); | |
ade92717 AR |
9700 | if (ui_out_is_mi_like_p (uiout)) |
9701 | { | |
9702 | ui_out_field_string (uiout, "reason", | |
9703 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9704 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9705 | ui_out_field_int (uiout, "bkptno", b->number); | |
9706 | } | |
3086aeae DJ |
9707 | return PRINT_SRC_AND_LOC; |
9708 | } | |
9709 | ||
9710 | static void | |
cc59ec59 MS |
9711 | print_one_exception_catchpoint (struct breakpoint *b, |
9712 | struct bp_location **last_loc) | |
3086aeae | 9713 | { |
79a45b7d | 9714 | struct value_print_options opts; |
79a45e25 | 9715 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 9716 | |
79a45b7d TT |
9717 | get_user_print_options (&opts); |
9718 | if (opts.addressprint) | |
3086aeae DJ |
9719 | { |
9720 | annotate_field (4); | |
604133b5 AR |
9721 | if (b->loc == NULL || b->loc->shlib_disabled) |
9722 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
9723 | else | |
5af949e3 UW |
9724 | ui_out_field_core_addr (uiout, "addr", |
9725 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
9726 | } |
9727 | annotate_field (5); | |
604133b5 | 9728 | if (b->loc) |
a6d9a66e | 9729 | *last_loc = b->loc; |
3086aeae DJ |
9730 | if (strstr (b->addr_string, "throw") != NULL) |
9731 | ui_out_field_string (uiout, "what", "exception throw"); | |
9732 | else | |
9733 | ui_out_field_string (uiout, "what", "exception catch"); | |
9734 | } | |
9735 | ||
9736 | static void | |
9737 | print_mention_exception_catchpoint (struct breakpoint *b) | |
9738 | { | |
79a45e25 | 9739 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
9740 | int bp_temp; |
9741 | int bp_throw; | |
9742 | ||
df2b6d2d | 9743 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
9744 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
9745 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
9746 | : _("Catchpoint ")); | |
9747 | ui_out_field_int (uiout, "bkptno", b->number); | |
9748 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
9749 | : _(" (catch)")); | |
3086aeae DJ |
9750 | } |
9751 | ||
6149aea9 PA |
9752 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
9753 | catch catchpoints. */ | |
9754 | ||
9755 | static void | |
4a64f543 MS |
9756 | print_recreate_exception_catchpoint (struct breakpoint *b, |
9757 | struct ui_file *fp) | |
6149aea9 PA |
9758 | { |
9759 | int bp_temp; | |
9760 | int bp_throw; | |
9761 | ||
9762 | bp_temp = b->disposition == disp_del; | |
9763 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
9764 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
9765 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 9766 | print_recreate_thread (b, fp); |
6149aea9 PA |
9767 | } |
9768 | ||
2060206e | 9769 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
9770 | |
9771 | static int | |
9772 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
9773 | enum exception_event_kind ex_event, int from_tty) | |
9774 | { | |
604133b5 AR |
9775 | char *trigger_func_name; |
9776 | ||
3086aeae | 9777 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 9778 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 9779 | else |
604133b5 | 9780 | trigger_func_name = "__cxa_throw"; |
3086aeae | 9781 | |
8cdf0e15 VP |
9782 | create_breakpoint (get_current_arch (), |
9783 | trigger_func_name, cond_string, -1, | |
9784 | 0 /* condition and thread are valid. */, | |
0fb4aa4b | 9785 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
9786 | 0, |
9787 | AUTO_BOOLEAN_TRUE /* pending */, | |
9788 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe PM |
9789 | 1 /* enabled */, |
9790 | 0 /* internal */); | |
3086aeae | 9791 | |
3086aeae DJ |
9792 | return 1; |
9793 | } | |
9794 | ||
4a64f543 | 9795 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
9796 | |
9797 | static void | |
fba45db2 KB |
9798 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
9799 | int tempflag, int from_tty) | |
c906108c | 9800 | { |
c5aa993b | 9801 | char *cond_string = NULL; |
c5aa993b | 9802 | |
44feb3ce TT |
9803 | if (!arg) |
9804 | arg = ""; | |
e9cafbcc | 9805 | arg = skip_spaces (arg); |
c5aa993b | 9806 | |
c906108c SS |
9807 | cond_string = ep_parse_optional_if_clause (&arg); |
9808 | ||
9809 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 9810 | error (_("Junk at end of arguments.")); |
c906108c | 9811 | |
059fb39f PM |
9812 | if (ex_event != EX_EVENT_THROW |
9813 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 9814 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 9815 | |
3086aeae DJ |
9816 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
9817 | return; | |
9818 | ||
8a3fe4f8 | 9819 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
9820 | } |
9821 | ||
44feb3ce TT |
9822 | /* Implementation of "catch catch" command. */ |
9823 | ||
9824 | static void | |
9825 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9826 | { | |
9827 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9828 | |
44feb3ce TT |
9829 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
9830 | } | |
9831 | ||
9832 | /* Implementation of "catch throw" command. */ | |
9833 | ||
9834 | static void | |
9835 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
9836 | { | |
9837 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 9838 | |
44feb3ce TT |
9839 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
9840 | } | |
9841 | ||
9ac4176b | 9842 | void |
28010a5d PA |
9843 | init_ada_exception_breakpoint (struct breakpoint *b, |
9844 | struct gdbarch *gdbarch, | |
9845 | struct symtab_and_line sal, | |
9846 | char *addr_string, | |
c0a91b2b | 9847 | const struct breakpoint_ops *ops, |
28010a5d PA |
9848 | int tempflag, |
9849 | int from_tty) | |
f7f9143b | 9850 | { |
f7f9143b JB |
9851 | if (from_tty) |
9852 | { | |
5af949e3 UW |
9853 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
9854 | if (!loc_gdbarch) | |
9855 | loc_gdbarch = gdbarch; | |
9856 | ||
6c95b8df PA |
9857 | describe_other_breakpoints (loc_gdbarch, |
9858 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
9859 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
9860 | version for exception catchpoints, because two catchpoints | |
9861 | used for different exception names will use the same address. | |
9862 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 9863 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 9864 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
9865 | the user what type of catchpoint it is. The above is good |
9866 | enough for now, though. */ | |
9867 | } | |
9868 | ||
28010a5d | 9869 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
9870 | |
9871 | b->enable_state = bp_enabled; | |
9872 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
9873 | b->addr_string = addr_string; |
9874 | b->language = language_ada; | |
f7f9143b JB |
9875 | } |
9876 | ||
a96d9b2e SDJ |
9877 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
9878 | filter list, or NULL if no filtering is required. */ | |
9879 | static VEC(int) * | |
9880 | catch_syscall_split_args (char *arg) | |
9881 | { | |
9882 | VEC(int) *result = NULL; | |
29d0bb3d | 9883 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
9884 | |
9885 | while (*arg != '\0') | |
9886 | { | |
9887 | int i, syscall_number; | |
9888 | char *endptr; | |
9889 | char cur_name[128]; | |
9890 | struct syscall s; | |
9891 | ||
9892 | /* Skip whitespace. */ | |
9893 | while (isspace (*arg)) | |
9894 | arg++; | |
9895 | ||
9896 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
9897 | cur_name[i] = arg[i]; | |
9898 | cur_name[i] = '\0'; | |
9899 | arg += i; | |
9900 | ||
9901 | /* Check if the user provided a syscall name or a number. */ | |
9902 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
9903 | if (*endptr == '\0') | |
bccd0dd2 | 9904 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
9905 | else |
9906 | { | |
9907 | /* We have a name. Let's check if it's valid and convert it | |
9908 | to a number. */ | |
9909 | get_syscall_by_name (cur_name, &s); | |
9910 | ||
9911 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
9912 | /* Here we have to issue an error instead of a warning, |
9913 | because GDB cannot do anything useful if there's no | |
9914 | syscall number to be caught. */ | |
a96d9b2e SDJ |
9915 | error (_("Unknown syscall name '%s'."), cur_name); |
9916 | } | |
9917 | ||
9918 | /* Ok, it's valid. */ | |
9919 | VEC_safe_push (int, result, s.number); | |
9920 | } | |
9921 | ||
9922 | discard_cleanups (cleanup); | |
9923 | return result; | |
9924 | } | |
9925 | ||
9926 | /* Implement the "catch syscall" command. */ | |
9927 | ||
9928 | static void | |
cc59ec59 MS |
9929 | catch_syscall_command_1 (char *arg, int from_tty, |
9930 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
9931 | { |
9932 | int tempflag; | |
9933 | VEC(int) *filter; | |
9934 | struct syscall s; | |
9935 | struct gdbarch *gdbarch = get_current_arch (); | |
9936 | ||
9937 | /* Checking if the feature if supported. */ | |
9938 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
9939 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 9940 | this architecture yet.")); |
a96d9b2e SDJ |
9941 | |
9942 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
9943 | ||
e9cafbcc | 9944 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
9945 | |
9946 | /* We need to do this first "dummy" translation in order | |
9947 | to get the syscall XML file loaded or, most important, | |
9948 | to display a warning to the user if there's no XML file | |
9949 | for his/her architecture. */ | |
9950 | get_syscall_by_number (0, &s); | |
9951 | ||
9952 | /* The allowed syntax is: | |
9953 | catch syscall | |
9954 | catch syscall <name | number> [<name | number> ... <name | number>] | |
9955 | ||
9956 | Let's check if there's a syscall name. */ | |
9957 | ||
9958 | if (arg != NULL) | |
9959 | filter = catch_syscall_split_args (arg); | |
9960 | else | |
9961 | filter = NULL; | |
9962 | ||
9963 | create_syscall_event_catchpoint (tempflag, filter, | |
9964 | &catch_syscall_breakpoint_ops); | |
9965 | } | |
9966 | ||
c906108c | 9967 | static void |
fba45db2 | 9968 | catch_command (char *arg, int from_tty) |
c906108c | 9969 | { |
44feb3ce | 9970 | error (_("Catch requires an event name.")); |
c906108c SS |
9971 | } |
9972 | \f | |
9973 | ||
9974 | static void | |
fba45db2 | 9975 | tcatch_command (char *arg, int from_tty) |
c906108c | 9976 | { |
44feb3ce | 9977 | error (_("Catch requires an event name.")); |
c906108c SS |
9978 | } |
9979 | ||
8a2c437b TT |
9980 | /* A qsort comparison function that sorts breakpoints in order. */ |
9981 | ||
9982 | static int | |
9983 | compare_breakpoints (const void *a, const void *b) | |
9984 | { | |
9985 | const breakpoint_p *ba = a; | |
9986 | uintptr_t ua = (uintptr_t) *ba; | |
9987 | const breakpoint_p *bb = b; | |
9988 | uintptr_t ub = (uintptr_t) *bb; | |
9989 | ||
9990 | if ((*ba)->number < (*bb)->number) | |
9991 | return -1; | |
9992 | else if ((*ba)->number > (*bb)->number) | |
9993 | return 1; | |
9994 | ||
9995 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
9996 | the number 0. */ | |
9997 | if (ua < ub) | |
9998 | return -1; | |
9999 | return ub > ub ? 1 : 0; | |
10000 | } | |
10001 | ||
80f8a6eb | 10002 | /* Delete breakpoints by address or line. */ |
c906108c SS |
10003 | |
10004 | static void | |
fba45db2 | 10005 | clear_command (char *arg, int from_tty) |
c906108c | 10006 | { |
8a2c437b | 10007 | struct breakpoint *b, *prev; |
d6e956e5 VP |
10008 | VEC(breakpoint_p) *found = 0; |
10009 | int ix; | |
c906108c SS |
10010 | int default_match; |
10011 | struct symtabs_and_lines sals; | |
10012 | struct symtab_and_line sal; | |
c906108c | 10013 | int i; |
8a2c437b | 10014 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
10015 | |
10016 | if (arg) | |
10017 | { | |
f8eba3c6 TT |
10018 | sals = decode_line_spec (arg, (DECODE_LINE_FUNFIRSTLINE |
10019 | | DECODE_LINE_LIST_MODE)); | |
c906108c SS |
10020 | default_match = 0; |
10021 | } | |
10022 | else | |
10023 | { | |
c5aa993b | 10024 | sals.sals = (struct symtab_and_line *) |
c906108c | 10025 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 10026 | make_cleanup (xfree, sals.sals); |
4a64f543 | 10027 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
10028 | |
10029 | /* Set sal's line, symtab, pc, and pspace to the values | |
10030 | corresponding to the last call to print_frame_info. If the | |
10031 | codepoint is not valid, this will set all the fields to 0. */ | |
10032 | get_last_displayed_sal (&sal); | |
c906108c | 10033 | if (sal.symtab == 0) |
8a3fe4f8 | 10034 | error (_("No source file specified.")); |
c906108c SS |
10035 | |
10036 | sals.sals[0] = sal; | |
10037 | sals.nelts = 1; | |
10038 | ||
10039 | default_match = 1; | |
10040 | } | |
10041 | ||
4a64f543 MS |
10042 | /* We don't call resolve_sal_pc here. That's not as bad as it |
10043 | seems, because all existing breakpoints typically have both | |
10044 | file/line and pc set. So, if clear is given file/line, we can | |
10045 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
10046 | |
10047 | We only support clearing given the address explicitly | |
10048 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 10049 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 10050 | due to optimization, all in one block. |
4a64f543 MS |
10051 | |
10052 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
10053 | PC corresponding to the same file:line, the breakpoint won't |
10054 | be cleared. We probably can still clear the breakpoint, but | |
10055 | since the other PC value is never presented to user, user | |
10056 | can only find it by guessing, and it does not seem important | |
10057 | to support that. */ | |
10058 | ||
4a64f543 MS |
10059 | /* For each line spec given, delete bps which correspond to it. Do |
10060 | it in two passes, solely to preserve the current behavior that | |
10061 | from_tty is forced true if we delete more than one | |
10062 | breakpoint. */ | |
c906108c | 10063 | |
80f8a6eb | 10064 | found = NULL; |
8a2c437b | 10065 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
10066 | for (i = 0; i < sals.nelts; i++) |
10067 | { | |
4aac40c8 TT |
10068 | int is_abs, sal_name_len; |
10069 | ||
c906108c | 10070 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
10071 | If line given (pc == 0), clear all bpts on specified line. |
10072 | If defaulting, clear all bpts on default line | |
c906108c | 10073 | or at default pc. |
c5aa993b JM |
10074 | |
10075 | defaulting sal.pc != 0 tests to do | |
10076 | ||
10077 | 0 1 pc | |
10078 | 1 1 pc _and_ line | |
10079 | 0 0 line | |
10080 | 1 0 <can't happen> */ | |
c906108c SS |
10081 | |
10082 | sal = sals.sals[i]; | |
4aac40c8 TT |
10083 | is_abs = sal.symtab == NULL ? 1 : IS_ABSOLUTE_PATH (sal.symtab->filename); |
10084 | sal_name_len = is_abs ? 0 : strlen (sal.symtab->filename); | |
c906108c | 10085 | |
4a64f543 | 10086 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 10087 | ALL_BREAKPOINTS (b) |
c5aa993b | 10088 | { |
0d381245 | 10089 | int match = 0; |
4a64f543 | 10090 | /* Are we going to delete b? */ |
cc60f2e3 | 10091 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
10092 | { |
10093 | struct bp_location *loc = b->loc; | |
10094 | for (; loc; loc = loc->next) | |
10095 | { | |
f8eba3c6 TT |
10096 | /* If the user specified file:line, don't allow a PC |
10097 | match. This matches historical gdb behavior. */ | |
10098 | int pc_match = (!sal.explicit_line | |
10099 | && sal.pc | |
10100 | && (loc->pspace == sal.pspace) | |
10101 | && (loc->address == sal.pc) | |
10102 | && (!section_is_overlay (loc->section) | |
10103 | || loc->section == sal.section)); | |
4aac40c8 TT |
10104 | int line_match = 0; |
10105 | ||
10106 | if ((default_match || sal.explicit_line) | |
10107 | && loc->source_file != NULL | |
10108 | && sal.symtab != NULL | |
10109 | && sal.pspace == loc->pspace | |
10110 | && loc->line_number == sal.line) | |
10111 | { | |
10112 | if (filename_cmp (loc->source_file, | |
10113 | sal.symtab->filename) == 0) | |
10114 | line_match = 1; | |
10115 | else if (!IS_ABSOLUTE_PATH (sal.symtab->filename) | |
10116 | && compare_filenames_for_search (loc->source_file, | |
10117 | sal.symtab->filename, | |
10118 | sal_name_len)) | |
10119 | line_match = 1; | |
10120 | } | |
10121 | ||
0d381245 VP |
10122 | if (pc_match || line_match) |
10123 | { | |
10124 | match = 1; | |
10125 | break; | |
10126 | } | |
10127 | } | |
10128 | } | |
10129 | ||
10130 | if (match) | |
d6e956e5 | 10131 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 10132 | } |
80f8a6eb | 10133 | } |
8a2c437b | 10134 | |
80f8a6eb | 10135 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 10136 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
10137 | { |
10138 | if (arg) | |
8a3fe4f8 | 10139 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 10140 | else |
8a3fe4f8 | 10141 | error (_("No breakpoint at this line.")); |
80f8a6eb | 10142 | } |
c906108c | 10143 | |
8a2c437b TT |
10144 | /* Remove duplicates from the vec. */ |
10145 | qsort (VEC_address (breakpoint_p, found), | |
10146 | VEC_length (breakpoint_p, found), | |
10147 | sizeof (breakpoint_p), | |
10148 | compare_breakpoints); | |
10149 | prev = VEC_index (breakpoint_p, found, 0); | |
10150 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
10151 | { | |
10152 | if (b == prev) | |
10153 | { | |
10154 | VEC_ordered_remove (breakpoint_p, found, ix); | |
10155 | --ix; | |
10156 | } | |
10157 | } | |
10158 | ||
d6e956e5 | 10159 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 10160 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 10161 | if (from_tty) |
a3f17187 | 10162 | { |
d6e956e5 | 10163 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
10164 | printf_unfiltered (_("Deleted breakpoint ")); |
10165 | else | |
10166 | printf_unfiltered (_("Deleted breakpoints ")); | |
10167 | } | |
80f8a6eb | 10168 | breakpoints_changed (); |
d6e956e5 VP |
10169 | |
10170 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 10171 | { |
c5aa993b | 10172 | if (from_tty) |
d6e956e5 VP |
10173 | printf_unfiltered ("%d ", b->number); |
10174 | delete_breakpoint (b); | |
c906108c | 10175 | } |
80f8a6eb MS |
10176 | if (from_tty) |
10177 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
10178 | |
10179 | do_cleanups (cleanups); | |
c906108c SS |
10180 | } |
10181 | \f | |
10182 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
10183 | all breakpoints that are marked for deletion, whether hit or not. | |
10184 | This is called after any breakpoint is hit, or after errors. */ | |
10185 | ||
10186 | void | |
fba45db2 | 10187 | breakpoint_auto_delete (bpstat bs) |
c906108c | 10188 | { |
35df4500 | 10189 | struct breakpoint *b, *b_tmp; |
c906108c SS |
10190 | |
10191 | for (; bs; bs = bs->next) | |
f431efe5 PA |
10192 | if (bs->breakpoint_at |
10193 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 10194 | && bs->stop) |
f431efe5 | 10195 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 10196 | |
35df4500 | 10197 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 10198 | { |
b5de0fa7 | 10199 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
10200 | delete_breakpoint (b); |
10201 | } | |
c906108c SS |
10202 | } |
10203 | ||
4a64f543 MS |
10204 | /* A comparison function for bp_location AP and BP being interfaced to |
10205 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
10206 | does breakpoint_address_is_meaningful say for its OWNER), | |
10207 | secondarily by ordering first bp_permanent OWNERed elements and | |
10208 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 10209 | qsort being an unstable algorithm. */ |
876fa593 JK |
10210 | |
10211 | static int | |
494cfb0f | 10212 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 10213 | { |
494cfb0f JK |
10214 | struct bp_location *a = *(void **) ap; |
10215 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 10216 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
10217 | int a_perm = a->owner->enable_state == bp_permanent; |
10218 | int b_perm = b->owner->enable_state == bp_permanent; | |
10219 | ||
10220 | if (a->address != b->address) | |
10221 | return (a->address > b->address) - (a->address < b->address); | |
10222 | ||
10223 | /* Sort permanent breakpoints first. */ | |
10224 | if (a_perm != b_perm) | |
10225 | return (a_perm < b_perm) - (a_perm > b_perm); | |
10226 | ||
4a64f543 MS |
10227 | /* Make the user-visible order stable across GDB runs. Locations of |
10228 | the same breakpoint can be sorted in arbitrary order. */ | |
876fa593 JK |
10229 | |
10230 | if (a->owner->number != b->owner->number) | |
10231 | return (a->owner->number > b->owner->number) | |
10232 | - (a->owner->number < b->owner->number); | |
10233 | ||
10234 | return (a > b) - (a < b); | |
10235 | } | |
10236 | ||
876fa593 | 10237 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
10238 | bp_location_shadow_len_after_address_max according to the current |
10239 | content of the bp_location array. */ | |
f7545552 TT |
10240 | |
10241 | static void | |
876fa593 | 10242 | bp_location_target_extensions_update (void) |
f7545552 | 10243 | { |
876fa593 JK |
10244 | struct bp_location *bl, **blp_tmp; |
10245 | ||
10246 | bp_location_placed_address_before_address_max = 0; | |
10247 | bp_location_shadow_len_after_address_max = 0; | |
10248 | ||
10249 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
10250 | { | |
10251 | CORE_ADDR start, end, addr; | |
10252 | ||
10253 | if (!bp_location_has_shadow (bl)) | |
10254 | continue; | |
10255 | ||
10256 | start = bl->target_info.placed_address; | |
10257 | end = start + bl->target_info.shadow_len; | |
10258 | ||
10259 | gdb_assert (bl->address >= start); | |
10260 | addr = bl->address - start; | |
10261 | if (addr > bp_location_placed_address_before_address_max) | |
10262 | bp_location_placed_address_before_address_max = addr; | |
10263 | ||
10264 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
10265 | ||
10266 | gdb_assert (bl->address < end); | |
10267 | addr = end - bl->address; | |
10268 | if (addr > bp_location_shadow_len_after_address_max) | |
10269 | bp_location_shadow_len_after_address_max = addr; | |
10270 | } | |
f7545552 TT |
10271 | } |
10272 | ||
1e4d1764 YQ |
10273 | /* Download tracepoint locations if they haven't been. */ |
10274 | ||
10275 | static void | |
10276 | download_tracepoint_locations (void) | |
10277 | { | |
10278 | struct bp_location *bl, **blp_tmp; | |
10279 | struct cleanup *old_chain; | |
10280 | ||
10281 | if (!target_can_download_tracepoint ()) | |
10282 | return; | |
10283 | ||
10284 | old_chain = save_current_space_and_thread (); | |
10285 | ||
10286 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
10287 | { | |
10288 | struct tracepoint *t; | |
10289 | ||
10290 | if (!is_tracepoint (bl->owner)) | |
10291 | continue; | |
10292 | ||
10293 | if ((bl->owner->type == bp_fast_tracepoint | |
10294 | ? !may_insert_fast_tracepoints | |
10295 | : !may_insert_tracepoints)) | |
10296 | continue; | |
10297 | ||
10298 | /* In tracepoint, locations are _never_ duplicated, so | |
10299 | should_be_inserted is equivalent to | |
10300 | unduplicated_should_be_inserted. */ | |
10301 | if (!should_be_inserted (bl) || bl->inserted) | |
10302 | continue; | |
10303 | ||
10304 | switch_to_program_space_and_thread (bl->pspace); | |
10305 | ||
10306 | target_download_tracepoint (bl); | |
10307 | ||
10308 | bl->inserted = 1; | |
10309 | t = (struct tracepoint *) bl->owner; | |
10310 | t->number_on_target = bl->owner->number; | |
10311 | } | |
10312 | ||
10313 | do_cleanups (old_chain); | |
10314 | } | |
10315 | ||
934709f0 PW |
10316 | /* Swap the insertion/duplication state between two locations. */ |
10317 | ||
10318 | static void | |
10319 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
10320 | { | |
10321 | const int left_inserted = left->inserted; | |
10322 | const int left_duplicate = left->duplicate; | |
10323 | const struct bp_target_info left_target_info = left->target_info; | |
10324 | ||
1e4d1764 YQ |
10325 | /* Locations of tracepoints can never be duplicated. */ |
10326 | if (is_tracepoint (left->owner)) | |
10327 | gdb_assert (!left->duplicate); | |
10328 | if (is_tracepoint (right->owner)) | |
10329 | gdb_assert (!right->duplicate); | |
10330 | ||
934709f0 PW |
10331 | left->inserted = right->inserted; |
10332 | left->duplicate = right->duplicate; | |
10333 | left->target_info = right->target_info; | |
10334 | right->inserted = left_inserted; | |
10335 | right->duplicate = left_duplicate; | |
10336 | right->target_info = left_target_info; | |
10337 | } | |
10338 | ||
4cd9bd08 | 10339 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
10340 | into the inferior, only remove already-inserted locations that no |
10341 | longer should be inserted. Functions that delete a breakpoint or | |
10342 | breakpoints should pass false, so that deleting a breakpoint | |
10343 | doesn't have the side effect of inserting the locations of other | |
10344 | breakpoints that are marked not-inserted, but should_be_inserted | |
10345 | returns true on them. | |
10346 | ||
10347 | This behaviour is useful is situations close to tear-down -- e.g., | |
10348 | after an exec, while the target still has execution, but breakpoint | |
10349 | shadows of the previous executable image should *NOT* be restored | |
10350 | to the new image; or before detaching, where the target still has | |
10351 | execution and wants to delete breakpoints from GDB's lists, and all | |
10352 | breakpoints had already been removed from the inferior. */ | |
10353 | ||
0d381245 | 10354 | static void |
b60e7edf | 10355 | update_global_location_list (int should_insert) |
0d381245 | 10356 | { |
74960c60 | 10357 | struct breakpoint *b; |
876fa593 | 10358 | struct bp_location **locp, *loc; |
f7545552 TT |
10359 | struct cleanup *cleanups; |
10360 | ||
2d134ed3 PA |
10361 | /* Used in the duplicates detection below. When iterating over all |
10362 | bp_locations, points to the first bp_location of a given address. | |
10363 | Breakpoints and watchpoints of different types are never | |
10364 | duplicates of each other. Keep one pointer for each type of | |
10365 | breakpoint/watchpoint, so we only need to loop over all locations | |
10366 | once. */ | |
10367 | struct bp_location *bp_loc_first; /* breakpoint */ | |
10368 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
10369 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
10370 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 10371 | |
4a64f543 MS |
10372 | /* Saved former bp_location array which we compare against the newly |
10373 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
10374 | struct bp_location **old_location, **old_locp; |
10375 | unsigned old_location_count; | |
10376 | ||
10377 | old_location = bp_location; | |
10378 | old_location_count = bp_location_count; | |
10379 | bp_location = NULL; | |
10380 | bp_location_count = 0; | |
10381 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 10382 | |
74960c60 | 10383 | ALL_BREAKPOINTS (b) |
876fa593 JK |
10384 | for (loc = b->loc; loc; loc = loc->next) |
10385 | bp_location_count++; | |
10386 | ||
10387 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
10388 | locp = bp_location; | |
10389 | ALL_BREAKPOINTS (b) | |
10390 | for (loc = b->loc; loc; loc = loc->next) | |
10391 | *locp++ = loc; | |
10392 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 10393 | bp_location_compare); |
876fa593 JK |
10394 | |
10395 | bp_location_target_extensions_update (); | |
74960c60 | 10396 | |
4a64f543 MS |
10397 | /* Identify bp_location instances that are no longer present in the |
10398 | new list, and therefore should be freed. Note that it's not | |
10399 | necessary that those locations should be removed from inferior -- | |
10400 | if there's another location at the same address (previously | |
10401 | marked as duplicate), we don't need to remove/insert the | |
10402 | location. | |
876fa593 | 10403 | |
4a64f543 MS |
10404 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
10405 | and former bp_location array state respectively. */ | |
876fa593 JK |
10406 | |
10407 | locp = bp_location; | |
10408 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
10409 | old_locp++) | |
74960c60 | 10410 | { |
876fa593 | 10411 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 10412 | struct bp_location **loc2p; |
876fa593 | 10413 | |
e5dd4106 | 10414 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 10415 | not, we have to free it. */ |
c7d46a38 | 10416 | int found_object = 0; |
20874c92 VP |
10417 | /* Tells if the location should remain inserted in the target. */ |
10418 | int keep_in_target = 0; | |
10419 | int removed = 0; | |
876fa593 | 10420 | |
4a64f543 MS |
10421 | /* Skip LOCP entries which will definitely never be needed. |
10422 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 10423 | while (locp < bp_location + bp_location_count |
c7d46a38 | 10424 | && (*locp)->address < old_loc->address) |
876fa593 | 10425 | locp++; |
c7d46a38 PA |
10426 | |
10427 | for (loc2p = locp; | |
10428 | (loc2p < bp_location + bp_location_count | |
10429 | && (*loc2p)->address == old_loc->address); | |
10430 | loc2p++) | |
10431 | { | |
10432 | if (*loc2p == old_loc) | |
10433 | { | |
10434 | found_object = 1; | |
10435 | break; | |
10436 | } | |
10437 | } | |
74960c60 | 10438 | |
4a64f543 MS |
10439 | /* If this location is no longer present, and inserted, look if |
10440 | there's maybe a new location at the same address. If so, | |
10441 | mark that one inserted, and don't remove this one. This is | |
10442 | needed so that we don't have a time window where a breakpoint | |
10443 | at certain location is not inserted. */ | |
74960c60 | 10444 | |
876fa593 | 10445 | if (old_loc->inserted) |
0d381245 | 10446 | { |
4a64f543 MS |
10447 | /* If the location is inserted now, we might have to remove |
10448 | it. */ | |
74960c60 | 10449 | |
876fa593 | 10450 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 10451 | { |
4a64f543 MS |
10452 | /* The location is still present in the location list, |
10453 | and still should be inserted. Don't do anything. */ | |
20874c92 | 10454 | keep_in_target = 1; |
74960c60 VP |
10455 | } |
10456 | else | |
10457 | { | |
4a64f543 MS |
10458 | /* The location is either no longer present, or got |
10459 | disabled. See if there's another location at the | |
10460 | same address, in which case we don't need to remove | |
10461 | this one from the target. */ | |
876fa593 | 10462 | |
2bdf28a0 | 10463 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
10464 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
10465 | { | |
876fa593 | 10466 | for (loc2p = locp; |
c7d46a38 PA |
10467 | (loc2p < bp_location + bp_location_count |
10468 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
10469 | loc2p++) |
10470 | { | |
10471 | struct bp_location *loc2 = *loc2p; | |
10472 | ||
2d134ed3 | 10473 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 10474 | { |
85d721b8 PA |
10475 | /* Read watchpoint locations are switched to |
10476 | access watchpoints, if the former are not | |
10477 | supported, but the latter are. */ | |
10478 | if (is_hardware_watchpoint (old_loc->owner)) | |
10479 | { | |
10480 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
10481 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
10482 | } | |
10483 | ||
934709f0 PW |
10484 | /* loc2 is a duplicated location. We need to check |
10485 | if it should be inserted in case it will be | |
10486 | unduplicated. */ | |
10487 | if (loc2 != old_loc | |
10488 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 10489 | { |
934709f0 | 10490 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
10491 | keep_in_target = 1; |
10492 | break; | |
10493 | } | |
876fa593 JK |
10494 | } |
10495 | } | |
10496 | } | |
74960c60 VP |
10497 | } |
10498 | ||
20874c92 VP |
10499 | if (!keep_in_target) |
10500 | { | |
876fa593 | 10501 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 10502 | { |
4a64f543 MS |
10503 | /* This is just about all we can do. We could keep |
10504 | this location on the global list, and try to | |
10505 | remove it next time, but there's no particular | |
10506 | reason why we will succeed next time. | |
20874c92 | 10507 | |
4a64f543 MS |
10508 | Note that at this point, old_loc->owner is still |
10509 | valid, as delete_breakpoint frees the breakpoint | |
10510 | only after calling us. */ | |
3e43a32a MS |
10511 | printf_filtered (_("warning: Error removing " |
10512 | "breakpoint %d\n"), | |
876fa593 | 10513 | old_loc->owner->number); |
20874c92 VP |
10514 | } |
10515 | removed = 1; | |
10516 | } | |
0d381245 | 10517 | } |
74960c60 VP |
10518 | |
10519 | if (!found_object) | |
1c5cfe86 | 10520 | { |
db82e815 PA |
10521 | if (removed && non_stop |
10522 | && breakpoint_address_is_meaningful (old_loc->owner) | |
10523 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 10524 | { |
db82e815 PA |
10525 | /* This location was removed from the target. In |
10526 | non-stop mode, a race condition is possible where | |
10527 | we've removed a breakpoint, but stop events for that | |
10528 | breakpoint are already queued and will arrive later. | |
10529 | We apply an heuristic to be able to distinguish such | |
10530 | SIGTRAPs from other random SIGTRAPs: we keep this | |
10531 | breakpoint location for a bit, and will retire it | |
10532 | after we see some number of events. The theory here | |
10533 | is that reporting of events should, "on the average", | |
10534 | be fair, so after a while we'll see events from all | |
10535 | threads that have anything of interest, and no longer | |
10536 | need to keep this breakpoint location around. We | |
10537 | don't hold locations forever so to reduce chances of | |
10538 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
10539 | SIGTRAP. | |
10540 | ||
10541 | The heuristic failing can be disastrous on | |
10542 | decr_pc_after_break targets. | |
10543 | ||
10544 | On decr_pc_after_break targets, like e.g., x86-linux, | |
10545 | if we fail to recognize a late breakpoint SIGTRAP, | |
10546 | because events_till_retirement has reached 0 too | |
10547 | soon, we'll fail to do the PC adjustment, and report | |
10548 | a random SIGTRAP to the user. When the user resumes | |
10549 | the inferior, it will most likely immediately crash | |
2dec564e | 10550 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
10551 | corrupted, because of being resumed e.g., in the |
10552 | middle of a multi-byte instruction, or skipped a | |
10553 | one-byte instruction. This was actually seen happen | |
10554 | on native x86-linux, and should be less rare on | |
10555 | targets that do not support new thread events, like | |
10556 | remote, due to the heuristic depending on | |
10557 | thread_count. | |
10558 | ||
10559 | Mistaking a random SIGTRAP for a breakpoint trap | |
10560 | causes similar symptoms (PC adjustment applied when | |
10561 | it shouldn't), but then again, playing with SIGTRAPs | |
10562 | behind the debugger's back is asking for trouble. | |
10563 | ||
10564 | Since hardware watchpoint traps are always | |
10565 | distinguishable from other traps, so we don't need to | |
10566 | apply keep hardware watchpoint moribund locations | |
10567 | around. We simply always ignore hardware watchpoint | |
10568 | traps we can no longer explain. */ | |
10569 | ||
876fa593 JK |
10570 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
10571 | old_loc->owner = NULL; | |
20874c92 | 10572 | |
876fa593 | 10573 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
10574 | } |
10575 | else | |
f431efe5 PA |
10576 | { |
10577 | old_loc->owner = NULL; | |
10578 | decref_bp_location (&old_loc); | |
10579 | } | |
20874c92 | 10580 | } |
74960c60 | 10581 | } |
1c5cfe86 | 10582 | |
348d480f PA |
10583 | /* Rescan breakpoints at the same address and section, marking the |
10584 | first one as "first" and any others as "duplicates". This is so | |
10585 | that the bpt instruction is only inserted once. If we have a | |
10586 | permanent breakpoint at the same place as BPT, make that one the | |
10587 | official one, and the rest as duplicates. Permanent breakpoints | |
10588 | are sorted first for the same address. | |
10589 | ||
10590 | Do the same for hardware watchpoints, but also considering the | |
10591 | watchpoint's type (regular/access/read) and length. */ | |
10592 | ||
10593 | bp_loc_first = NULL; | |
10594 | wp_loc_first = NULL; | |
10595 | awp_loc_first = NULL; | |
10596 | rwp_loc_first = NULL; | |
10597 | ALL_BP_LOCATIONS (loc, locp) | |
10598 | { | |
10599 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
10600 | non-NULL. */ | |
348d480f | 10601 | struct bp_location **loc_first_p; |
d3fbdd86 | 10602 | b = loc->owner; |
348d480f | 10603 | |
f8eba3c6 | 10604 | if (!should_be_inserted (loc) |
348d480f | 10605 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
10606 | /* Don't detect duplicate for tracepoint locations because they are |
10607 | never duplicated. See the comments in field `duplicate' of | |
10608 | `struct bp_location'. */ | |
348d480f PA |
10609 | || is_tracepoint (b)) |
10610 | continue; | |
10611 | ||
10612 | /* Permanent breakpoint should always be inserted. */ | |
10613 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
10614 | internal_error (__FILE__, __LINE__, | |
10615 | _("allegedly permanent breakpoint is not " | |
10616 | "actually inserted")); | |
10617 | ||
10618 | if (b->type == bp_hardware_watchpoint) | |
10619 | loc_first_p = &wp_loc_first; | |
10620 | else if (b->type == bp_read_watchpoint) | |
10621 | loc_first_p = &rwp_loc_first; | |
10622 | else if (b->type == bp_access_watchpoint) | |
10623 | loc_first_p = &awp_loc_first; | |
10624 | else | |
10625 | loc_first_p = &bp_loc_first; | |
10626 | ||
10627 | if (*loc_first_p == NULL | |
10628 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
10629 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
10630 | { | |
10631 | *loc_first_p = loc; | |
10632 | loc->duplicate = 0; | |
10633 | continue; | |
10634 | } | |
10635 | ||
934709f0 PW |
10636 | |
10637 | /* This and the above ensure the invariant that the first location | |
10638 | is not duplicated, and is the inserted one. | |
10639 | All following are marked as duplicated, and are not inserted. */ | |
10640 | if (loc->inserted) | |
10641 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
10642 | loc->duplicate = 1; |
10643 | ||
10644 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted | |
10645 | && b->enable_state != bp_permanent) | |
10646 | internal_error (__FILE__, __LINE__, | |
10647 | _("another breakpoint was inserted on top of " | |
10648 | "a permanent breakpoint")); | |
10649 | } | |
10650 | ||
10651 | if (breakpoints_always_inserted_mode () && should_insert | |
10652 | && (have_live_inferiors () | |
10653 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) | |
10654 | insert_breakpoint_locations (); | |
10655 | ||
1e4d1764 YQ |
10656 | if (should_insert) |
10657 | download_tracepoint_locations (); | |
10658 | ||
348d480f PA |
10659 | do_cleanups (cleanups); |
10660 | } | |
10661 | ||
10662 | void | |
10663 | breakpoint_retire_moribund (void) | |
10664 | { | |
10665 | struct bp_location *loc; | |
10666 | int ix; | |
10667 | ||
10668 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
10669 | if (--(loc->events_till_retirement) == 0) | |
10670 | { | |
10671 | decref_bp_location (&loc); | |
10672 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
10673 | --ix; | |
10674 | } | |
10675 | } | |
10676 | ||
10677 | static void | |
10678 | update_global_location_list_nothrow (int inserting) | |
10679 | { | |
bfd189b1 | 10680 | volatile struct gdb_exception e; |
348d480f PA |
10681 | |
10682 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
10683 | update_global_location_list (inserting); | |
10684 | } | |
10685 | ||
10686 | /* Clear BKP from a BPS. */ | |
10687 | ||
10688 | static void | |
10689 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
10690 | { | |
10691 | bpstat bs; | |
10692 | ||
10693 | for (bs = bps; bs; bs = bs->next) | |
10694 | if (bs->breakpoint_at == bpt) | |
10695 | { | |
10696 | bs->breakpoint_at = NULL; | |
10697 | bs->old_val = NULL; | |
10698 | /* bs->commands will be freed later. */ | |
10699 | } | |
10700 | } | |
10701 | ||
10702 | /* Callback for iterate_over_threads. */ | |
10703 | static int | |
10704 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
10705 | { | |
10706 | struct breakpoint *bpt = data; | |
10707 | ||
10708 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
10709 | return 0; | |
10710 | } | |
10711 | ||
10712 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
10713 | callbacks. */ | |
10714 | ||
10715 | static void | |
10716 | say_where (struct breakpoint *b) | |
10717 | { | |
79a45e25 | 10718 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10719 | struct value_print_options opts; |
10720 | ||
10721 | get_user_print_options (&opts); | |
10722 | ||
10723 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
10724 | single string. */ | |
10725 | if (b->loc == NULL) | |
10726 | { | |
10727 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
10728 | } | |
10729 | else | |
10730 | { | |
f8eba3c6 | 10731 | if (opts.addressprint || b->loc->source_file == NULL) |
348d480f PA |
10732 | { |
10733 | printf_filtered (" at "); | |
10734 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
10735 | gdb_stdout); | |
10736 | } | |
f8eba3c6 TT |
10737 | if (b->loc->source_file) |
10738 | { | |
10739 | /* If there is a single location, we can print the location | |
10740 | more nicely. */ | |
10741 | if (b->loc->next == NULL) | |
10742 | printf_filtered (": file %s, line %d.", | |
10743 | b->loc->source_file, b->loc->line_number); | |
10744 | else | |
10745 | /* This is not ideal, but each location may have a | |
10746 | different file name, and this at least reflects the | |
10747 | real situation somewhat. */ | |
10748 | printf_filtered (": %s.", b->addr_string); | |
10749 | } | |
348d480f PA |
10750 | |
10751 | if (b->loc->next) | |
10752 | { | |
10753 | struct bp_location *loc = b->loc; | |
10754 | int n = 0; | |
10755 | for (; loc; loc = loc->next) | |
10756 | ++n; | |
10757 | printf_filtered (" (%d locations)", n); | |
10758 | } | |
10759 | } | |
10760 | } | |
10761 | ||
348d480f PA |
10762 | /* Default bp_location_ops methods. */ |
10763 | ||
10764 | static void | |
10765 | bp_location_dtor (struct bp_location *self) | |
10766 | { | |
10767 | xfree (self->cond); | |
10768 | xfree (self->function_name); | |
f8eba3c6 | 10769 | xfree (self->source_file); |
348d480f PA |
10770 | } |
10771 | ||
10772 | static const struct bp_location_ops bp_location_ops = | |
10773 | { | |
10774 | bp_location_dtor | |
10775 | }; | |
10776 | ||
2060206e PA |
10777 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
10778 | inherit from. */ | |
348d480f | 10779 | |
2060206e PA |
10780 | static void |
10781 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
10782 | { |
10783 | decref_counted_command_line (&self->commands); | |
10784 | xfree (self->cond_string); | |
348d480f | 10785 | xfree (self->addr_string); |
f8eba3c6 | 10786 | xfree (self->filter); |
348d480f | 10787 | xfree (self->addr_string_range_end); |
348d480f PA |
10788 | } |
10789 | ||
2060206e PA |
10790 | static struct bp_location * |
10791 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
10792 | { |
10793 | struct bp_location *loc; | |
10794 | ||
10795 | loc = XNEW (struct bp_location); | |
10796 | init_bp_location (loc, &bp_location_ops, self); | |
10797 | return loc; | |
10798 | } | |
10799 | ||
2060206e PA |
10800 | static void |
10801 | base_breakpoint_re_set (struct breakpoint *b) | |
10802 | { | |
10803 | /* Nothing to re-set. */ | |
10804 | } | |
10805 | ||
10806 | #define internal_error_pure_virtual_called() \ | |
10807 | gdb_assert_not_reached ("pure virtual function called") | |
10808 | ||
10809 | static int | |
10810 | base_breakpoint_insert_location (struct bp_location *bl) | |
10811 | { | |
10812 | internal_error_pure_virtual_called (); | |
10813 | } | |
10814 | ||
10815 | static int | |
10816 | base_breakpoint_remove_location (struct bp_location *bl) | |
10817 | { | |
10818 | internal_error_pure_virtual_called (); | |
10819 | } | |
10820 | ||
10821 | static int | |
10822 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
10823 | struct address_space *aspace, | |
10824 | CORE_ADDR bp_addr) | |
10825 | { | |
10826 | internal_error_pure_virtual_called (); | |
10827 | } | |
10828 | ||
10829 | static void | |
10830 | base_breakpoint_check_status (bpstat bs) | |
10831 | { | |
10832 | /* Always stop. */ | |
10833 | } | |
10834 | ||
10835 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
10836 | errors. */ | |
10837 | ||
10838 | static int | |
10839 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
10840 | { | |
10841 | internal_error_pure_virtual_called (); | |
10842 | } | |
10843 | ||
10844 | /* A "resources_needed" breakpoint_ops method that just internal | |
10845 | errors. */ | |
10846 | ||
10847 | static int | |
10848 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
10849 | { | |
10850 | internal_error_pure_virtual_called (); | |
10851 | } | |
10852 | ||
10853 | static enum print_stop_action | |
10854 | base_breakpoint_print_it (bpstat bs) | |
10855 | { | |
10856 | internal_error_pure_virtual_called (); | |
10857 | } | |
10858 | ||
10859 | static void | |
10860 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
10861 | struct ui_out *uiout) | |
10862 | { | |
10863 | /* nothing */ | |
10864 | } | |
10865 | ||
10866 | static void | |
10867 | base_breakpoint_print_mention (struct breakpoint *b) | |
10868 | { | |
10869 | internal_error_pure_virtual_called (); | |
10870 | } | |
10871 | ||
10872 | static void | |
10873 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
10874 | { | |
10875 | internal_error_pure_virtual_called (); | |
10876 | } | |
10877 | ||
983af33b SDJ |
10878 | static void |
10879 | base_breakpoint_create_sals_from_address (char **arg, | |
10880 | struct linespec_result *canonical, | |
10881 | enum bptype type_wanted, | |
10882 | char *addr_start, | |
10883 | char **copy_arg) | |
10884 | { | |
10885 | internal_error_pure_virtual_called (); | |
10886 | } | |
10887 | ||
10888 | static void | |
10889 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
10890 | struct linespec_result *c, | |
10891 | struct linespec_sals *lsal, | |
10892 | char *cond_string, | |
10893 | enum bptype type_wanted, | |
10894 | enum bpdisp disposition, | |
10895 | int thread, | |
10896 | int task, int ignore_count, | |
10897 | const struct breakpoint_ops *o, | |
10898 | int from_tty, int enabled, | |
10899 | int internal) | |
10900 | { | |
10901 | internal_error_pure_virtual_called (); | |
10902 | } | |
10903 | ||
10904 | static void | |
10905 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
10906 | struct symtabs_and_lines *sals) | |
10907 | { | |
10908 | internal_error_pure_virtual_called (); | |
10909 | } | |
10910 | ||
2060206e PA |
10911 | static struct breakpoint_ops base_breakpoint_ops = |
10912 | { | |
10913 | base_breakpoint_dtor, | |
10914 | base_breakpoint_allocate_location, | |
10915 | base_breakpoint_re_set, | |
10916 | base_breakpoint_insert_location, | |
10917 | base_breakpoint_remove_location, | |
10918 | base_breakpoint_breakpoint_hit, | |
10919 | base_breakpoint_check_status, | |
10920 | base_breakpoint_resources_needed, | |
10921 | base_breakpoint_works_in_software_mode, | |
10922 | base_breakpoint_print_it, | |
10923 | NULL, | |
10924 | base_breakpoint_print_one_detail, | |
10925 | base_breakpoint_print_mention, | |
983af33b SDJ |
10926 | base_breakpoint_print_recreate, |
10927 | base_breakpoint_create_sals_from_address, | |
10928 | base_breakpoint_create_breakpoints_sal, | |
10929 | base_breakpoint_decode_linespec, | |
2060206e PA |
10930 | }; |
10931 | ||
10932 | /* Default breakpoint_ops methods. */ | |
10933 | ||
10934 | static void | |
348d480f PA |
10935 | bkpt_re_set (struct breakpoint *b) |
10936 | { | |
06edf0c0 PA |
10937 | /* FIXME: is this still reachable? */ |
10938 | if (b->addr_string == NULL) | |
10939 | { | |
10940 | /* Anything without a string can't be re-set. */ | |
348d480f | 10941 | delete_breakpoint (b); |
06edf0c0 | 10942 | return; |
348d480f | 10943 | } |
06edf0c0 PA |
10944 | |
10945 | breakpoint_re_set_default (b); | |
348d480f PA |
10946 | } |
10947 | ||
2060206e | 10948 | static int |
348d480f PA |
10949 | bkpt_insert_location (struct bp_location *bl) |
10950 | { | |
10951 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
10952 | return target_insert_hw_breakpoint (bl->gdbarch, | |
10953 | &bl->target_info); | |
10954 | else | |
10955 | return target_insert_breakpoint (bl->gdbarch, | |
10956 | &bl->target_info); | |
10957 | } | |
10958 | ||
2060206e | 10959 | static int |
348d480f PA |
10960 | bkpt_remove_location (struct bp_location *bl) |
10961 | { | |
10962 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
10963 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
10964 | else | |
10965 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
10966 | } | |
10967 | ||
2060206e | 10968 | static int |
348d480f PA |
10969 | bkpt_breakpoint_hit (const struct bp_location *bl, |
10970 | struct address_space *aspace, CORE_ADDR bp_addr) | |
10971 | { | |
10972 | struct breakpoint *b = bl->owner; | |
10973 | ||
10974 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, | |
10975 | aspace, bp_addr)) | |
10976 | return 0; | |
10977 | ||
10978 | if (overlay_debugging /* unmapped overlay section */ | |
10979 | && section_is_overlay (bl->section) | |
10980 | && !section_is_mapped (bl->section)) | |
10981 | return 0; | |
10982 | ||
10983 | return 1; | |
10984 | } | |
10985 | ||
2060206e | 10986 | static int |
348d480f PA |
10987 | bkpt_resources_needed (const struct bp_location *bl) |
10988 | { | |
10989 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
10990 | ||
10991 | return 1; | |
10992 | } | |
10993 | ||
2060206e | 10994 | static enum print_stop_action |
348d480f PA |
10995 | bkpt_print_it (bpstat bs) |
10996 | { | |
348d480f PA |
10997 | struct breakpoint *b; |
10998 | const struct bp_location *bl; | |
001c8c33 | 10999 | int bp_temp; |
79a45e25 | 11000 | struct ui_out *uiout = current_uiout; |
348d480f PA |
11001 | |
11002 | gdb_assert (bs->bp_location_at != NULL); | |
11003 | ||
11004 | bl = bs->bp_location_at; | |
11005 | b = bs->breakpoint_at; | |
11006 | ||
001c8c33 PA |
11007 | bp_temp = b->disposition == disp_del; |
11008 | if (bl->address != bl->requested_address) | |
11009 | breakpoint_adjustment_warning (bl->requested_address, | |
11010 | bl->address, | |
11011 | b->number, 1); | |
11012 | annotate_breakpoint (b->number); | |
11013 | if (bp_temp) | |
11014 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
11015 | else | |
11016 | ui_out_text (uiout, "\nBreakpoint "); | |
11017 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 11018 | { |
001c8c33 PA |
11019 | ui_out_field_string (uiout, "reason", |
11020 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11021 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 11022 | } |
001c8c33 PA |
11023 | ui_out_field_int (uiout, "bkptno", b->number); |
11024 | ui_out_text (uiout, ", "); | |
06edf0c0 | 11025 | |
001c8c33 | 11026 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
11027 | } |
11028 | ||
2060206e | 11029 | static void |
06edf0c0 PA |
11030 | bkpt_print_mention (struct breakpoint *b) |
11031 | { | |
79a45e25 | 11032 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
11033 | return; |
11034 | ||
11035 | switch (b->type) | |
11036 | { | |
11037 | case bp_breakpoint: | |
11038 | case bp_gnu_ifunc_resolver: | |
11039 | if (b->disposition == disp_del) | |
11040 | printf_filtered (_("Temporary breakpoint")); | |
11041 | else | |
11042 | printf_filtered (_("Breakpoint")); | |
11043 | printf_filtered (_(" %d"), b->number); | |
11044 | if (b->type == bp_gnu_ifunc_resolver) | |
11045 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
11046 | break; | |
11047 | case bp_hardware_breakpoint: | |
11048 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
11049 | break; | |
11050 | } | |
11051 | ||
11052 | say_where (b); | |
11053 | } | |
11054 | ||
2060206e | 11055 | static void |
06edf0c0 PA |
11056 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
11057 | { | |
11058 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
11059 | fprintf_unfiltered (fp, "tbreak"); | |
11060 | else if (tp->type == bp_breakpoint) | |
11061 | fprintf_unfiltered (fp, "break"); | |
11062 | else if (tp->type == bp_hardware_breakpoint | |
11063 | && tp->disposition == disp_del) | |
11064 | fprintf_unfiltered (fp, "thbreak"); | |
11065 | else if (tp->type == bp_hardware_breakpoint) | |
11066 | fprintf_unfiltered (fp, "hbreak"); | |
11067 | else | |
11068 | internal_error (__FILE__, __LINE__, | |
11069 | _("unhandled breakpoint type %d"), (int) tp->type); | |
11070 | ||
2060206e | 11071 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 11072 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
11073 | } |
11074 | ||
983af33b SDJ |
11075 | static void |
11076 | bkpt_create_sals_from_address (char **arg, | |
11077 | struct linespec_result *canonical, | |
11078 | enum bptype type_wanted, | |
11079 | char *addr_start, char **copy_arg) | |
11080 | { | |
11081 | create_sals_from_address_default (arg, canonical, type_wanted, | |
11082 | addr_start, copy_arg); | |
11083 | } | |
11084 | ||
11085 | static void | |
11086 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
11087 | struct linespec_result *canonical, | |
11088 | struct linespec_sals *lsal, | |
11089 | char *cond_string, | |
11090 | enum bptype type_wanted, | |
11091 | enum bpdisp disposition, | |
11092 | int thread, | |
11093 | int task, int ignore_count, | |
11094 | const struct breakpoint_ops *ops, | |
11095 | int from_tty, int enabled, | |
11096 | int internal) | |
11097 | { | |
11098 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
11099 | cond_string, type_wanted, | |
11100 | disposition, thread, task, | |
11101 | ignore_count, ops, from_tty, | |
11102 | enabled, internal); | |
11103 | } | |
11104 | ||
11105 | static void | |
11106 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
11107 | struct symtabs_and_lines *sals) | |
11108 | { | |
11109 | decode_linespec_default (b, s, sals); | |
11110 | } | |
11111 | ||
06edf0c0 PA |
11112 | /* Virtual table for internal breakpoints. */ |
11113 | ||
11114 | static void | |
11115 | internal_bkpt_re_set (struct breakpoint *b) | |
11116 | { | |
11117 | switch (b->type) | |
11118 | { | |
11119 | /* Delete overlay event and longjmp master breakpoints; they | |
11120 | will be reset later by breakpoint_re_set. */ | |
11121 | case bp_overlay_event: | |
11122 | case bp_longjmp_master: | |
11123 | case bp_std_terminate_master: | |
11124 | case bp_exception_master: | |
11125 | delete_breakpoint (b); | |
11126 | break; | |
11127 | ||
11128 | /* This breakpoint is special, it's set up when the inferior | |
11129 | starts and we really don't want to touch it. */ | |
11130 | case bp_shlib_event: | |
11131 | ||
11132 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
11133 | it is set up, we do not want to touch it. */ | |
11134 | case bp_thread_event: | |
11135 | break; | |
11136 | } | |
11137 | } | |
11138 | ||
11139 | static void | |
11140 | internal_bkpt_check_status (bpstat bs) | |
11141 | { | |
a9b3a50f PA |
11142 | if (bs->breakpoint_at->type == bp_shlib_event) |
11143 | { | |
11144 | /* If requested, stop when the dynamic linker notifies GDB of | |
11145 | events. This allows the user to get control and place | |
11146 | breakpoints in initializer routines for dynamically loaded | |
11147 | objects (among other things). */ | |
11148 | bs->stop = stop_on_solib_events; | |
11149 | bs->print = stop_on_solib_events; | |
11150 | } | |
11151 | else | |
11152 | bs->stop = 0; | |
06edf0c0 PA |
11153 | } |
11154 | ||
11155 | static enum print_stop_action | |
11156 | internal_bkpt_print_it (bpstat bs) | |
11157 | { | |
36dfb11c | 11158 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 11159 | struct breakpoint *b; |
06edf0c0 | 11160 | |
06edf0c0 PA |
11161 | b = bs->breakpoint_at; |
11162 | ||
06edf0c0 PA |
11163 | switch (b->type) |
11164 | { | |
348d480f PA |
11165 | case bp_shlib_event: |
11166 | /* Did we stop because the user set the stop_on_solib_events | |
11167 | variable? (If so, we report this as a generic, "Stopped due | |
11168 | to shlib event" message.) */ | |
36dfb11c TT |
11169 | ui_out_text (uiout, _("Stopped due to shared library event\n")); |
11170 | if (ui_out_is_mi_like_p (uiout)) | |
11171 | ui_out_field_string (uiout, "reason", | |
11172 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
348d480f PA |
11173 | break; |
11174 | ||
11175 | case bp_thread_event: | |
11176 | /* Not sure how we will get here. | |
11177 | GDB should not stop for these breakpoints. */ | |
11178 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
11179 | break; |
11180 | ||
11181 | case bp_overlay_event: | |
11182 | /* By analogy with the thread event, GDB should not stop for these. */ | |
11183 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
11184 | break; |
11185 | ||
11186 | case bp_longjmp_master: | |
11187 | /* These should never be enabled. */ | |
11188 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
11189 | break; |
11190 | ||
11191 | case bp_std_terminate_master: | |
11192 | /* These should never be enabled. */ | |
11193 | printf_filtered (_("std::terminate Master Breakpoint: " | |
11194 | "gdb should not stop!\n")); | |
348d480f PA |
11195 | break; |
11196 | ||
11197 | case bp_exception_master: | |
11198 | /* These should never be enabled. */ | |
11199 | printf_filtered (_("Exception Master Breakpoint: " | |
11200 | "gdb should not stop!\n")); | |
06edf0c0 PA |
11201 | break; |
11202 | } | |
11203 | ||
001c8c33 | 11204 | return PRINT_NOTHING; |
06edf0c0 PA |
11205 | } |
11206 | ||
11207 | static void | |
11208 | internal_bkpt_print_mention (struct breakpoint *b) | |
11209 | { | |
11210 | /* Nothing to mention. These breakpoints are internal. */ | |
11211 | } | |
11212 | ||
06edf0c0 PA |
11213 | /* Virtual table for momentary breakpoints */ |
11214 | ||
11215 | static void | |
11216 | momentary_bkpt_re_set (struct breakpoint *b) | |
11217 | { | |
11218 | /* Keep temporary breakpoints, which can be encountered when we step | |
11219 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
11220 | Otherwise these should have been blown away via the cleanup chain | |
11221 | or by breakpoint_init_inferior when we rerun the executable. */ | |
11222 | } | |
11223 | ||
11224 | static void | |
11225 | momentary_bkpt_check_status (bpstat bs) | |
11226 | { | |
11227 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
11228 | } | |
11229 | ||
11230 | static enum print_stop_action | |
11231 | momentary_bkpt_print_it (bpstat bs) | |
11232 | { | |
79a45e25 PA |
11233 | struct ui_out *uiout = current_uiout; |
11234 | ||
001c8c33 | 11235 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 11236 | { |
001c8c33 | 11237 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 11238 | |
001c8c33 PA |
11239 | switch (b->type) |
11240 | { | |
11241 | case bp_finish: | |
11242 | ui_out_field_string | |
11243 | (uiout, "reason", | |
11244 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
11245 | break; | |
348d480f | 11246 | |
001c8c33 PA |
11247 | case bp_until: |
11248 | ui_out_field_string | |
11249 | (uiout, "reason", | |
11250 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
11251 | break; | |
11252 | } | |
348d480f PA |
11253 | } |
11254 | ||
001c8c33 | 11255 | return PRINT_UNKNOWN; |
348d480f PA |
11256 | } |
11257 | ||
06edf0c0 PA |
11258 | static void |
11259 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 11260 | { |
06edf0c0 | 11261 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
11262 | } |
11263 | ||
348d480f | 11264 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 11265 | |
348d480f PA |
11266 | static void |
11267 | tracepoint_re_set (struct breakpoint *b) | |
11268 | { | |
11269 | breakpoint_re_set_default (b); | |
11270 | } | |
876fa593 | 11271 | |
348d480f PA |
11272 | static int |
11273 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
11274 | struct address_space *aspace, CORE_ADDR bp_addr) | |
11275 | { | |
11276 | /* By definition, the inferior does not report stops at | |
11277 | tracepoints. */ | |
11278 | return 0; | |
74960c60 VP |
11279 | } |
11280 | ||
11281 | static void | |
348d480f PA |
11282 | tracepoint_print_one_detail (const struct breakpoint *self, |
11283 | struct ui_out *uiout) | |
74960c60 | 11284 | { |
d9b3f62e PA |
11285 | struct tracepoint *tp = (struct tracepoint *) self; |
11286 | if (tp->static_trace_marker_id) | |
348d480f PA |
11287 | { |
11288 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 11289 | |
348d480f PA |
11290 | ui_out_text (uiout, "\tmarker id is "); |
11291 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 11292 | tp->static_trace_marker_id); |
348d480f PA |
11293 | ui_out_text (uiout, "\n"); |
11294 | } | |
0d381245 VP |
11295 | } |
11296 | ||
a474d7c2 | 11297 | static void |
348d480f | 11298 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 11299 | { |
79a45e25 | 11300 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 11301 | return; |
cc59ec59 | 11302 | |
348d480f PA |
11303 | switch (b->type) |
11304 | { | |
11305 | case bp_tracepoint: | |
11306 | printf_filtered (_("Tracepoint")); | |
11307 | printf_filtered (_(" %d"), b->number); | |
11308 | break; | |
11309 | case bp_fast_tracepoint: | |
11310 | printf_filtered (_("Fast tracepoint")); | |
11311 | printf_filtered (_(" %d"), b->number); | |
11312 | break; | |
11313 | case bp_static_tracepoint: | |
11314 | printf_filtered (_("Static tracepoint")); | |
11315 | printf_filtered (_(" %d"), b->number); | |
11316 | break; | |
11317 | default: | |
11318 | internal_error (__FILE__, __LINE__, | |
11319 | _("unhandled tracepoint type %d"), (int) b->type); | |
11320 | } | |
11321 | ||
11322 | say_where (b); | |
a474d7c2 PA |
11323 | } |
11324 | ||
348d480f | 11325 | static void |
d9b3f62e | 11326 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 11327 | { |
d9b3f62e PA |
11328 | struct tracepoint *tp = (struct tracepoint *) self; |
11329 | ||
11330 | if (self->type == bp_fast_tracepoint) | |
348d480f | 11331 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 11332 | if (self->type == bp_static_tracepoint) |
348d480f | 11333 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 11334 | else if (self->type == bp_tracepoint) |
348d480f PA |
11335 | fprintf_unfiltered (fp, "trace"); |
11336 | else | |
11337 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 11338 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 11339 | |
d9b3f62e PA |
11340 | fprintf_unfiltered (fp, " %s", self->addr_string); |
11341 | print_recreate_thread (self, fp); | |
11342 | ||
11343 | if (tp->pass_count) | |
11344 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
11345 | } |
11346 | ||
983af33b SDJ |
11347 | static void |
11348 | tracepoint_create_sals_from_address (char **arg, | |
11349 | struct linespec_result *canonical, | |
11350 | enum bptype type_wanted, | |
11351 | char *addr_start, char **copy_arg) | |
11352 | { | |
11353 | create_sals_from_address_default (arg, canonical, type_wanted, | |
11354 | addr_start, copy_arg); | |
11355 | } | |
11356 | ||
11357 | static void | |
11358 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
11359 | struct linespec_result *canonical, | |
11360 | struct linespec_sals *lsal, | |
11361 | char *cond_string, | |
11362 | enum bptype type_wanted, | |
11363 | enum bpdisp disposition, | |
11364 | int thread, | |
11365 | int task, int ignore_count, | |
11366 | const struct breakpoint_ops *ops, | |
11367 | int from_tty, int enabled, | |
11368 | int internal) | |
11369 | { | |
11370 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
11371 | cond_string, type_wanted, | |
11372 | disposition, thread, task, | |
11373 | ignore_count, ops, from_tty, | |
11374 | enabled, internal); | |
11375 | } | |
11376 | ||
11377 | static void | |
11378 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
11379 | struct symtabs_and_lines *sals) | |
11380 | { | |
11381 | decode_linespec_default (b, s, sals); | |
11382 | } | |
11383 | ||
2060206e | 11384 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 11385 | |
983af33b SDJ |
11386 | /* The breakpoint_ops structure to be used on static tracepoints with |
11387 | markers (`-m'). */ | |
11388 | ||
11389 | static void | |
11390 | strace_marker_create_sals_from_address (char **arg, | |
11391 | struct linespec_result *canonical, | |
11392 | enum bptype type_wanted, | |
11393 | char *addr_start, char **copy_arg) | |
11394 | { | |
11395 | struct linespec_sals lsal; | |
11396 | ||
11397 | lsal.sals = decode_static_tracepoint_spec (arg); | |
11398 | ||
11399 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
11400 | ||
11401 | canonical->addr_string = xstrdup (*copy_arg); | |
11402 | lsal.canonical = xstrdup (*copy_arg); | |
11403 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
11404 | } | |
11405 | ||
11406 | static void | |
11407 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
11408 | struct linespec_result *canonical, | |
11409 | struct linespec_sals *lsal, | |
11410 | char *cond_string, | |
11411 | enum bptype type_wanted, | |
11412 | enum bpdisp disposition, | |
11413 | int thread, | |
11414 | int task, int ignore_count, | |
11415 | const struct breakpoint_ops *ops, | |
11416 | int from_tty, int enabled, | |
11417 | int internal) | |
11418 | { | |
11419 | int i; | |
11420 | ||
11421 | /* If the user is creating a static tracepoint by marker id | |
11422 | (strace -m MARKER_ID), then store the sals index, so that | |
11423 | breakpoint_re_set can try to match up which of the newly | |
11424 | found markers corresponds to this one, and, don't try to | |
11425 | expand multiple locations for each sal, given than SALS | |
11426 | already should contain all sals for MARKER_ID. */ | |
11427 | ||
11428 | for (i = 0; i < lsal->sals.nelts; ++i) | |
11429 | { | |
11430 | struct symtabs_and_lines expanded; | |
11431 | struct tracepoint *tp; | |
11432 | struct cleanup *old_chain; | |
11433 | char *addr_string; | |
11434 | ||
11435 | expanded.nelts = 1; | |
11436 | expanded.sals = &lsal->sals.sals[i]; | |
11437 | ||
11438 | addr_string = xstrdup (canonical->addr_string); | |
11439 | old_chain = make_cleanup (xfree, addr_string); | |
11440 | ||
11441 | tp = XCNEW (struct tracepoint); | |
11442 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
11443 | addr_string, NULL, | |
11444 | cond_string, type_wanted, disposition, | |
11445 | thread, task, ignore_count, ops, | |
11446 | from_tty, enabled, internal, | |
11447 | canonical->special_display); | |
11448 | /* Given that its possible to have multiple markers with | |
11449 | the same string id, if the user is creating a static | |
11450 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
11451 | store the sals index, so that breakpoint_re_set can | |
11452 | try to match up which of the newly found markers | |
11453 | corresponds to this one */ | |
11454 | tp->static_trace_marker_id_idx = i; | |
11455 | ||
11456 | install_breakpoint (internal, &tp->base, 0); | |
11457 | ||
11458 | discard_cleanups (old_chain); | |
11459 | } | |
11460 | } | |
11461 | ||
11462 | static void | |
11463 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
11464 | struct symtabs_and_lines *sals) | |
11465 | { | |
11466 | struct tracepoint *tp = (struct tracepoint *) b; | |
11467 | ||
11468 | *sals = decode_static_tracepoint_spec (s); | |
11469 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
11470 | { | |
11471 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
11472 | sals->nelts = 1; | |
11473 | } | |
11474 | else | |
11475 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
11476 | } | |
11477 | ||
11478 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
11479 | ||
11480 | static int | |
11481 | strace_marker_p (struct breakpoint *b) | |
11482 | { | |
11483 | return b->ops == &strace_marker_breakpoint_ops; | |
11484 | } | |
11485 | ||
53a5351d | 11486 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 11487 | structures. */ |
c906108c SS |
11488 | |
11489 | void | |
fba45db2 | 11490 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 11491 | { |
52f0bd74 | 11492 | struct breakpoint *b; |
c906108c | 11493 | |
8a3fe4f8 | 11494 | gdb_assert (bpt != NULL); |
c906108c | 11495 | |
4a64f543 MS |
11496 | /* Has this bp already been deleted? This can happen because |
11497 | multiple lists can hold pointers to bp's. bpstat lists are | |
11498 | especial culprits. | |
11499 | ||
11500 | One example of this happening is a watchpoint's scope bp. When | |
11501 | the scope bp triggers, we notice that the watchpoint is out of | |
11502 | scope, and delete it. We also delete its scope bp. But the | |
11503 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
11504 | That bpstat is then checked for auto-deleting bp's, which are | |
11505 | deleted. | |
11506 | ||
11507 | A real solution to this problem might involve reference counts in | |
11508 | bp's, and/or giving them pointers back to their referencing | |
11509 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
11510 | storage when no more references were extent. A cheaper bandaid | |
11511 | was chosen. */ | |
c906108c SS |
11512 | if (bpt->type == bp_none) |
11513 | return; | |
11514 | ||
4a64f543 MS |
11515 | /* At least avoid this stale reference until the reference counting |
11516 | of breakpoints gets resolved. */ | |
d0fb5eae | 11517 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 11518 | { |
d0fb5eae | 11519 | struct breakpoint *related; |
3a5c3e22 | 11520 | struct watchpoint *w; |
d0fb5eae JK |
11521 | |
11522 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 11523 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 11524 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
11525 | w = (struct watchpoint *) bpt; |
11526 | else | |
11527 | w = NULL; | |
11528 | if (w != NULL) | |
11529 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
11530 | |
11531 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
11532 | for (related = bpt; related->related_breakpoint != bpt; | |
11533 | related = related->related_breakpoint); | |
11534 | related->related_breakpoint = bpt->related_breakpoint; | |
11535 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
11536 | } |
11537 | ||
a9634178 TJB |
11538 | /* watch_command_1 creates a watchpoint but only sets its number if |
11539 | update_watchpoint succeeds in creating its bp_locations. If there's | |
11540 | a problem in that process, we'll be asked to delete the half-created | |
11541 | watchpoint. In that case, don't announce the deletion. */ | |
11542 | if (bpt->number) | |
11543 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 11544 | |
c906108c SS |
11545 | if (breakpoint_chain == bpt) |
11546 | breakpoint_chain = bpt->next; | |
11547 | ||
c906108c SS |
11548 | ALL_BREAKPOINTS (b) |
11549 | if (b->next == bpt) | |
c5aa993b JM |
11550 | { |
11551 | b->next = bpt->next; | |
11552 | break; | |
11553 | } | |
c906108c | 11554 | |
f431efe5 PA |
11555 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
11556 | been freed. */ | |
11557 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 11558 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
11559 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
11560 | commands are associated with the bpstat; if we remove it here, | |
11561 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
11562 | event-top.c won't do anything, and temporary breakpoints with | |
11563 | commands won't work. */ | |
11564 | ||
11565 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
11566 | ||
4a64f543 MS |
11567 | /* Now that breakpoint is removed from breakpoint list, update the |
11568 | global location list. This will remove locations that used to | |
11569 | belong to this breakpoint. Do this before freeing the breakpoint | |
11570 | itself, since remove_breakpoint looks at location's owner. It | |
11571 | might be better design to have location completely | |
11572 | self-contained, but it's not the case now. */ | |
b60e7edf | 11573 | update_global_location_list (0); |
74960c60 | 11574 | |
348d480f | 11575 | bpt->ops->dtor (bpt); |
4a64f543 MS |
11576 | /* On the chance that someone will soon try again to delete this |
11577 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 11578 | bpt->type = bp_none; |
b8c9b27d | 11579 | xfree (bpt); |
c906108c SS |
11580 | } |
11581 | ||
4d6140d9 AC |
11582 | static void |
11583 | do_delete_breakpoint_cleanup (void *b) | |
11584 | { | |
11585 | delete_breakpoint (b); | |
11586 | } | |
11587 | ||
11588 | struct cleanup * | |
11589 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
11590 | { | |
11591 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
11592 | } | |
11593 | ||
51be5b68 PA |
11594 | /* Iterator function to call a user-provided callback function once |
11595 | for each of B and its related breakpoints. */ | |
11596 | ||
11597 | static void | |
11598 | iterate_over_related_breakpoints (struct breakpoint *b, | |
11599 | void (*function) (struct breakpoint *, | |
11600 | void *), | |
11601 | void *data) | |
11602 | { | |
11603 | struct breakpoint *related; | |
11604 | ||
11605 | related = b; | |
11606 | do | |
11607 | { | |
11608 | struct breakpoint *next; | |
11609 | ||
11610 | /* FUNCTION may delete RELATED. */ | |
11611 | next = related->related_breakpoint; | |
11612 | ||
11613 | if (next == related) | |
11614 | { | |
11615 | /* RELATED is the last ring entry. */ | |
11616 | function (related, data); | |
11617 | ||
11618 | /* FUNCTION may have deleted it, so we'd never reach back to | |
11619 | B. There's nothing left to do anyway, so just break | |
11620 | out. */ | |
11621 | break; | |
11622 | } | |
11623 | else | |
11624 | function (related, data); | |
11625 | ||
11626 | related = next; | |
11627 | } | |
11628 | while (related != b); | |
11629 | } | |
95a42b64 TT |
11630 | |
11631 | static void | |
11632 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
11633 | { | |
11634 | delete_breakpoint (b); | |
11635 | } | |
11636 | ||
51be5b68 PA |
11637 | /* A callback for map_breakpoint_numbers that calls |
11638 | delete_breakpoint. */ | |
11639 | ||
11640 | static void | |
11641 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
11642 | { | |
11643 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
11644 | } | |
11645 | ||
c906108c | 11646 | void |
fba45db2 | 11647 | delete_command (char *arg, int from_tty) |
c906108c | 11648 | { |
35df4500 | 11649 | struct breakpoint *b, *b_tmp; |
c906108c | 11650 | |
ea9365bb TT |
11651 | dont_repeat (); |
11652 | ||
c906108c SS |
11653 | if (arg == 0) |
11654 | { | |
11655 | int breaks_to_delete = 0; | |
11656 | ||
46c6471b PA |
11657 | /* Delete all breakpoints if no argument. Do not delete |
11658 | internal breakpoints, these have to be deleted with an | |
11659 | explicit breakpoint number argument. */ | |
c5aa993b | 11660 | ALL_BREAKPOINTS (b) |
46c6471b | 11661 | if (user_breakpoint_p (b)) |
973d738b DJ |
11662 | { |
11663 | breaks_to_delete = 1; | |
11664 | break; | |
11665 | } | |
c906108c SS |
11666 | |
11667 | /* Ask user only if there are some breakpoints to delete. */ | |
11668 | if (!from_tty | |
e2e0b3e5 | 11669 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 11670 | { |
35df4500 | 11671 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 11672 | if (user_breakpoint_p (b)) |
c5aa993b | 11673 | delete_breakpoint (b); |
c906108c SS |
11674 | } |
11675 | } | |
11676 | else | |
51be5b68 | 11677 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
11678 | } |
11679 | ||
0d381245 VP |
11680 | static int |
11681 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 11682 | { |
0d381245 | 11683 | for (; loc; loc = loc->next) |
8645ff69 UW |
11684 | if (!loc->shlib_disabled |
11685 | && !loc->pspace->executing_startup) | |
0d381245 VP |
11686 | return 0; |
11687 | return 1; | |
fe3f5fa8 VP |
11688 | } |
11689 | ||
776592bf DE |
11690 | /* Subroutine of update_breakpoint_locations to simplify it. |
11691 | Return non-zero if multiple fns in list LOC have the same name. | |
11692 | Null names are ignored. */ | |
11693 | ||
11694 | static int | |
11695 | ambiguous_names_p (struct bp_location *loc) | |
11696 | { | |
11697 | struct bp_location *l; | |
11698 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
11699 | (int (*) (const void *, |
11700 | const void *)) streq, | |
776592bf DE |
11701 | NULL, xcalloc, xfree); |
11702 | ||
11703 | for (l = loc; l != NULL; l = l->next) | |
11704 | { | |
11705 | const char **slot; | |
11706 | const char *name = l->function_name; | |
11707 | ||
11708 | /* Allow for some names to be NULL, ignore them. */ | |
11709 | if (name == NULL) | |
11710 | continue; | |
11711 | ||
11712 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
11713 | INSERT); | |
4a64f543 MS |
11714 | /* NOTE: We can assume slot != NULL here because xcalloc never |
11715 | returns NULL. */ | |
776592bf DE |
11716 | if (*slot != NULL) |
11717 | { | |
11718 | htab_delete (htab); | |
11719 | return 1; | |
11720 | } | |
11721 | *slot = name; | |
11722 | } | |
11723 | ||
11724 | htab_delete (htab); | |
11725 | return 0; | |
11726 | } | |
11727 | ||
0fb4aa4b PA |
11728 | /* When symbols change, it probably means the sources changed as well, |
11729 | and it might mean the static tracepoint markers are no longer at | |
11730 | the same address or line numbers they used to be at last we | |
11731 | checked. Losing your static tracepoints whenever you rebuild is | |
11732 | undesirable. This function tries to resync/rematch gdb static | |
11733 | tracepoints with the markers on the target, for static tracepoints | |
11734 | that have not been set by marker id. Static tracepoint that have | |
11735 | been set by marker id are reset by marker id in breakpoint_re_set. | |
11736 | The heuristic is: | |
11737 | ||
11738 | 1) For a tracepoint set at a specific address, look for a marker at | |
11739 | the old PC. If one is found there, assume to be the same marker. | |
11740 | If the name / string id of the marker found is different from the | |
11741 | previous known name, assume that means the user renamed the marker | |
11742 | in the sources, and output a warning. | |
11743 | ||
11744 | 2) For a tracepoint set at a given line number, look for a marker | |
11745 | at the new address of the old line number. If one is found there, | |
11746 | assume to be the same marker. If the name / string id of the | |
11747 | marker found is different from the previous known name, assume that | |
11748 | means the user renamed the marker in the sources, and output a | |
11749 | warning. | |
11750 | ||
11751 | 3) If a marker is no longer found at the same address or line, it | |
11752 | may mean the marker no longer exists. But it may also just mean | |
11753 | the code changed a bit. Maybe the user added a few lines of code | |
11754 | that made the marker move up or down (in line number terms). Ask | |
11755 | the target for info about the marker with the string id as we knew | |
11756 | it. If found, update line number and address in the matching | |
11757 | static tracepoint. This will get confused if there's more than one | |
11758 | marker with the same ID (possible in UST, although unadvised | |
11759 | precisely because it confuses tools). */ | |
11760 | ||
11761 | static struct symtab_and_line | |
11762 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
11763 | { | |
d9b3f62e | 11764 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
11765 | struct static_tracepoint_marker marker; |
11766 | CORE_ADDR pc; | |
11767 | int i; | |
11768 | ||
11769 | pc = sal.pc; | |
11770 | if (sal.line) | |
11771 | find_line_pc (sal.symtab, sal.line, &pc); | |
11772 | ||
11773 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
11774 | { | |
d9b3f62e | 11775 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
11776 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
11777 | b->number, | |
d9b3f62e | 11778 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 11779 | |
d9b3f62e PA |
11780 | xfree (tp->static_trace_marker_id); |
11781 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
11782 | release_static_tracepoint_marker (&marker); |
11783 | ||
11784 | return sal; | |
11785 | } | |
11786 | ||
11787 | /* Old marker wasn't found on target at lineno. Try looking it up | |
11788 | by string ID. */ | |
11789 | if (!sal.explicit_pc | |
11790 | && sal.line != 0 | |
11791 | && sal.symtab != NULL | |
d9b3f62e | 11792 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
11793 | { |
11794 | VEC(static_tracepoint_marker_p) *markers; | |
11795 | ||
11796 | markers | |
d9b3f62e | 11797 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
11798 | |
11799 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
11800 | { | |
80e1d417 | 11801 | struct symtab_and_line sal2; |
0fb4aa4b | 11802 | struct symbol *sym; |
80e1d417 | 11803 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 11804 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 11805 | |
80e1d417 | 11806 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 11807 | |
d9b3f62e | 11808 | xfree (tp->static_trace_marker_id); |
80e1d417 | 11809 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
11810 | |
11811 | warning (_("marker for static tracepoint %d (%s) not " | |
11812 | "found at previous line number"), | |
d9b3f62e | 11813 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 11814 | |
80e1d417 | 11815 | init_sal (&sal2); |
0fb4aa4b | 11816 | |
80e1d417 | 11817 | sal2.pc = tpmarker->address; |
0fb4aa4b | 11818 | |
80e1d417 AS |
11819 | sal2 = find_pc_line (tpmarker->address, 0); |
11820 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
11821 | ui_out_text (uiout, "Now in "); |
11822 | if (sym) | |
11823 | { | |
11824 | ui_out_field_string (uiout, "func", | |
11825 | SYMBOL_PRINT_NAME (sym)); | |
11826 | ui_out_text (uiout, " at "); | |
11827 | } | |
80e1d417 | 11828 | ui_out_field_string (uiout, "file", sal2.symtab->filename); |
0fb4aa4b PA |
11829 | ui_out_text (uiout, ":"); |
11830 | ||
11831 | if (ui_out_is_mi_like_p (uiout)) | |
11832 | { | |
80e1d417 | 11833 | char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b PA |
11834 | |
11835 | if (fullname) | |
11836 | ui_out_field_string (uiout, "fullname", fullname); | |
11837 | } | |
11838 | ||
80e1d417 | 11839 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
11840 | ui_out_text (uiout, "\n"); |
11841 | ||
80e1d417 | 11842 | b->loc->line_number = sal2.line; |
0fb4aa4b | 11843 | |
f8eba3c6 | 11844 | xfree (b->loc->source_file); |
0fb4aa4b | 11845 | if (sym) |
80e1d417 | 11846 | b->loc->source_file = xstrdup (sal2.symtab->filename); |
0fb4aa4b | 11847 | else |
f8eba3c6 | 11848 | b->loc->source_file = NULL; |
0fb4aa4b PA |
11849 | |
11850 | xfree (b->addr_string); | |
11851 | b->addr_string = xstrprintf ("%s:%d", | |
80e1d417 | 11852 | sal2.symtab->filename, |
f8eba3c6 | 11853 | b->loc->line_number); |
0fb4aa4b PA |
11854 | |
11855 | /* Might be nice to check if function changed, and warn if | |
11856 | so. */ | |
11857 | ||
80e1d417 | 11858 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
11859 | } |
11860 | } | |
11861 | return sal; | |
11862 | } | |
11863 | ||
8d3788bd VP |
11864 | /* Returns 1 iff locations A and B are sufficiently same that |
11865 | we don't need to report breakpoint as changed. */ | |
11866 | ||
11867 | static int | |
11868 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
11869 | { | |
11870 | while (a && b) | |
11871 | { | |
11872 | if (a->address != b->address) | |
11873 | return 0; | |
11874 | ||
11875 | if (a->shlib_disabled != b->shlib_disabled) | |
11876 | return 0; | |
11877 | ||
11878 | if (a->enabled != b->enabled) | |
11879 | return 0; | |
11880 | ||
11881 | a = a->next; | |
11882 | b = b->next; | |
11883 | } | |
11884 | ||
11885 | if ((a == NULL) != (b == NULL)) | |
11886 | return 0; | |
11887 | ||
11888 | return 1; | |
11889 | } | |
11890 | ||
f1310107 TJB |
11891 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
11892 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
11893 | a ranged breakpoint. */ | |
11894 | ||
0e30163f | 11895 | void |
0d381245 | 11896 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
11897 | struct symtabs_and_lines sals, |
11898 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
11899 | { |
11900 | int i; | |
0d381245 VP |
11901 | struct bp_location *existing_locations = b->loc; |
11902 | ||
f8eba3c6 TT |
11903 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
11904 | { | |
11905 | /* Ranged breakpoints have only one start location and one end | |
11906 | location. */ | |
11907 | b->enable_state = bp_disabled; | |
11908 | update_global_location_list (1); | |
11909 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
11910 | "multiple locations found\n"), | |
11911 | b->number); | |
11912 | return; | |
11913 | } | |
f1310107 | 11914 | |
4a64f543 MS |
11915 | /* If there's no new locations, and all existing locations are |
11916 | pending, don't do anything. This optimizes the common case where | |
11917 | all locations are in the same shared library, that was unloaded. | |
11918 | We'd like to retain the location, so that when the library is | |
11919 | loaded again, we don't loose the enabled/disabled status of the | |
11920 | individual locations. */ | |
0d381245 | 11921 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
11922 | return; |
11923 | ||
fe3f5fa8 VP |
11924 | b->loc = NULL; |
11925 | ||
0d381245 | 11926 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 11927 | { |
f8eba3c6 TT |
11928 | struct bp_location *new_loc; |
11929 | ||
11930 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
11931 | ||
11932 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 11933 | |
0d381245 VP |
11934 | /* Reparse conditions, they might contain references to the |
11935 | old symtab. */ | |
11936 | if (b->cond_string != NULL) | |
11937 | { | |
f1310107 | 11938 | char *s; |
bfd189b1 | 11939 | volatile struct gdb_exception e; |
fe3f5fa8 | 11940 | |
0d381245 VP |
11941 | s = b->cond_string; |
11942 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
11943 | { | |
11944 | new_loc->cond = parse_exp_1 (&s, block_for_pc (sals.sals[i].pc), | |
11945 | 0); | |
11946 | } | |
11947 | if (e.reason < 0) | |
11948 | { | |
3e43a32a MS |
11949 | warning (_("failed to reevaluate condition " |
11950 | "for breakpoint %d: %s"), | |
0d381245 VP |
11951 | b->number, e.message); |
11952 | new_loc->enabled = 0; | |
11953 | } | |
11954 | } | |
fe3f5fa8 | 11955 | |
f1310107 TJB |
11956 | if (sals_end.nelts) |
11957 | { | |
11958 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
11959 | ||
11960 | new_loc->length = end - sals.sals[0].pc + 1; | |
11961 | } | |
0d381245 | 11962 | } |
fe3f5fa8 | 11963 | |
514f746b AR |
11964 | /* Update locations of permanent breakpoints. */ |
11965 | if (b->enable_state == bp_permanent) | |
11966 | make_breakpoint_permanent (b); | |
11967 | ||
4a64f543 MS |
11968 | /* If possible, carry over 'disable' status from existing |
11969 | breakpoints. */ | |
0d381245 VP |
11970 | { |
11971 | struct bp_location *e = existing_locations; | |
776592bf DE |
11972 | /* If there are multiple breakpoints with the same function name, |
11973 | e.g. for inline functions, comparing function names won't work. | |
11974 | Instead compare pc addresses; this is just a heuristic as things | |
11975 | may have moved, but in practice it gives the correct answer | |
11976 | often enough until a better solution is found. */ | |
11977 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
11978 | ||
0d381245 VP |
11979 | for (; e; e = e->next) |
11980 | { | |
11981 | if (!e->enabled && e->function_name) | |
11982 | { | |
11983 | struct bp_location *l = b->loc; | |
776592bf DE |
11984 | if (have_ambiguous_names) |
11985 | { | |
11986 | for (; l; l = l->next) | |
f1310107 | 11987 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
11988 | { |
11989 | l->enabled = 0; | |
11990 | break; | |
11991 | } | |
11992 | } | |
11993 | else | |
11994 | { | |
11995 | for (; l; l = l->next) | |
11996 | if (l->function_name | |
11997 | && strcmp (e->function_name, l->function_name) == 0) | |
11998 | { | |
11999 | l->enabled = 0; | |
12000 | break; | |
12001 | } | |
12002 | } | |
0d381245 VP |
12003 | } |
12004 | } | |
12005 | } | |
fe3f5fa8 | 12006 | |
8d3788bd VP |
12007 | if (!locations_are_equal (existing_locations, b->loc)) |
12008 | observer_notify_breakpoint_modified (b); | |
12009 | ||
b60e7edf | 12010 | update_global_location_list (1); |
fe3f5fa8 VP |
12011 | } |
12012 | ||
ef23e705 TJB |
12013 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
12014 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
12015 | ||
12016 | static struct symtabs_and_lines | |
12017 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
12018 | { | |
12019 | char *s; | |
02d20e4a | 12020 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 12021 | volatile struct gdb_exception e; |
ef23e705 | 12022 | |
983af33b | 12023 | gdb_assert (b->ops != NULL); |
ef23e705 | 12024 | s = addr_string; |
ef23e705 TJB |
12025 | |
12026 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12027 | { | |
983af33b | 12028 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
12029 | } |
12030 | if (e.reason < 0) | |
12031 | { | |
12032 | int not_found_and_ok = 0; | |
12033 | /* For pending breakpoints, it's expected that parsing will | |
12034 | fail until the right shared library is loaded. User has | |
12035 | already told to create pending breakpoints and don't need | |
12036 | extra messages. If breakpoint is in bp_shlib_disabled | |
12037 | state, then user already saw the message about that | |
12038 | breakpoint being disabled, and don't want to see more | |
12039 | errors. */ | |
58438ac1 | 12040 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
12041 | && (b->condition_not_parsed |
12042 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 12043 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
12044 | || b->enable_state == bp_disabled)) |
12045 | not_found_and_ok = 1; | |
12046 | ||
12047 | if (!not_found_and_ok) | |
12048 | { | |
12049 | /* We surely don't want to warn about the same breakpoint | |
12050 | 10 times. One solution, implemented here, is disable | |
12051 | the breakpoint on error. Another solution would be to | |
12052 | have separate 'warning emitted' flag. Since this | |
12053 | happens only when a binary has changed, I don't know | |
12054 | which approach is better. */ | |
12055 | b->enable_state = bp_disabled; | |
12056 | throw_exception (e); | |
12057 | } | |
12058 | } | |
12059 | ||
58438ac1 | 12060 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 12061 | { |
f8eba3c6 | 12062 | int i; |
ef23e705 | 12063 | |
f8eba3c6 TT |
12064 | for (i = 0; i < sals.nelts; ++i) |
12065 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
12066 | if (b->condition_not_parsed && s && s[0]) |
12067 | { | |
12068 | char *cond_string = 0; | |
12069 | int thread = -1; | |
12070 | int task = 0; | |
12071 | ||
12072 | find_condition_and_thread (s, sals.sals[0].pc, | |
12073 | &cond_string, &thread, &task); | |
12074 | if (cond_string) | |
12075 | b->cond_string = cond_string; | |
12076 | b->thread = thread; | |
12077 | b->task = task; | |
12078 | b->condition_not_parsed = 0; | |
12079 | } | |
12080 | ||
983af33b | 12081 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 12082 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 12083 | |
58438ac1 TT |
12084 | *found = 1; |
12085 | } | |
12086 | else | |
12087 | *found = 0; | |
ef23e705 TJB |
12088 | |
12089 | return sals; | |
12090 | } | |
12091 | ||
348d480f PA |
12092 | /* The default re_set method, for typical hardware or software |
12093 | breakpoints. Reevaluate the breakpoint and recreate its | |
12094 | locations. */ | |
12095 | ||
12096 | static void | |
28010a5d | 12097 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
12098 | { |
12099 | int found; | |
f1310107 | 12100 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 12101 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 12102 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
12103 | |
12104 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
12105 | if (found) | |
12106 | { | |
12107 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 12108 | expanded = sals; |
ef23e705 TJB |
12109 | } |
12110 | ||
f1310107 TJB |
12111 | if (b->addr_string_range_end) |
12112 | { | |
12113 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
12114 | if (found) | |
12115 | { | |
12116 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 12117 | expanded_end = sals_end; |
f1310107 TJB |
12118 | } |
12119 | } | |
12120 | ||
12121 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
12122 | } |
12123 | ||
983af33b SDJ |
12124 | /* Default method for creating SALs from an address string. It basically |
12125 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
12126 | ||
12127 | static void | |
12128 | create_sals_from_address_default (char **arg, | |
12129 | struct linespec_result *canonical, | |
12130 | enum bptype type_wanted, | |
12131 | char *addr_start, char **copy_arg) | |
12132 | { | |
12133 | parse_breakpoint_sals (arg, canonical); | |
12134 | } | |
12135 | ||
12136 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
12137 | function for the `create_breakpoints_sal' method of | |
12138 | breakpoint_ops. */ | |
12139 | ||
12140 | static void | |
12141 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
12142 | struct linespec_result *canonical, | |
12143 | struct linespec_sals *lsal, | |
12144 | char *cond_string, | |
12145 | enum bptype type_wanted, | |
12146 | enum bpdisp disposition, | |
12147 | int thread, | |
12148 | int task, int ignore_count, | |
12149 | const struct breakpoint_ops *ops, | |
12150 | int from_tty, int enabled, | |
12151 | int internal) | |
12152 | { | |
12153 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
12154 | type_wanted, disposition, | |
12155 | thread, task, ignore_count, ops, from_tty, | |
12156 | enabled, internal); | |
12157 | } | |
12158 | ||
12159 | /* Decode the line represented by S by calling decode_line_full. This is the | |
12160 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
12161 | ||
12162 | static void | |
12163 | decode_linespec_default (struct breakpoint *b, char **s, | |
12164 | struct symtabs_and_lines *sals) | |
12165 | { | |
12166 | struct linespec_result canonical; | |
12167 | ||
12168 | init_linespec_result (&canonical); | |
12169 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
12170 | (struct symtab *) NULL, 0, | |
12171 | &canonical, multiple_symbols_all, | |
12172 | b->filter); | |
12173 | ||
12174 | /* We should get 0 or 1 resulting SALs. */ | |
12175 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
12176 | ||
12177 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
12178 | { | |
12179 | struct linespec_sals *lsal; | |
12180 | ||
12181 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
12182 | *sals = lsal->sals; | |
12183 | /* Arrange it so the destructor does not free the | |
12184 | contents. */ | |
12185 | lsal->sals.sals = NULL; | |
12186 | } | |
12187 | ||
12188 | destroy_linespec_result (&canonical); | |
12189 | } | |
12190 | ||
28010a5d PA |
12191 | /* Prepare the global context for a re-set of breakpoint B. */ |
12192 | ||
12193 | static struct cleanup * | |
12194 | prepare_re_set_context (struct breakpoint *b) | |
12195 | { | |
12196 | struct cleanup *cleanups; | |
12197 | ||
12198 | input_radix = b->input_radix; | |
12199 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
12200 | if (b->pspace != NULL) |
12201 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
12202 | set_language (b->language); |
12203 | ||
12204 | return cleanups; | |
ef23e705 TJB |
12205 | } |
12206 | ||
c906108c SS |
12207 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
12208 | The value we return ends up being the return value from catch_errors. | |
12209 | Unused in this case. */ | |
12210 | ||
12211 | static int | |
4efb68b1 | 12212 | breakpoint_re_set_one (void *bint) |
c906108c | 12213 | { |
4a64f543 | 12214 | /* Get past catch_errs. */ |
53a5351d | 12215 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 12216 | struct cleanup *cleanups; |
c906108c | 12217 | |
348d480f PA |
12218 | cleanups = prepare_re_set_context (b); |
12219 | b->ops->re_set (b); | |
12220 | do_cleanups (cleanups); | |
c906108c SS |
12221 | return 0; |
12222 | } | |
12223 | ||
69de3c6a | 12224 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 12225 | void |
69de3c6a | 12226 | breakpoint_re_set (void) |
c906108c | 12227 | { |
35df4500 | 12228 | struct breakpoint *b, *b_tmp; |
c906108c SS |
12229 | enum language save_language; |
12230 | int save_input_radix; | |
6c95b8df | 12231 | struct cleanup *old_chain; |
c5aa993b | 12232 | |
c906108c SS |
12233 | save_language = current_language->la_language; |
12234 | save_input_radix = input_radix; | |
6c95b8df PA |
12235 | old_chain = save_current_program_space (); |
12236 | ||
35df4500 | 12237 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 12238 | { |
4a64f543 | 12239 | /* Format possible error msg. */ |
fe3f5fa8 | 12240 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
12241 | b->number); |
12242 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 12243 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 12244 | do_cleanups (cleanups); |
c5aa993b | 12245 | } |
c906108c SS |
12246 | set_language (save_language); |
12247 | input_radix = save_input_radix; | |
e62c965a | 12248 | |
0756c555 | 12249 | jit_breakpoint_re_set (); |
4efc6507 | 12250 | |
6c95b8df PA |
12251 | do_cleanups (old_chain); |
12252 | ||
af02033e PP |
12253 | create_overlay_event_breakpoint (); |
12254 | create_longjmp_master_breakpoint (); | |
12255 | create_std_terminate_master_breakpoint (); | |
186c406b | 12256 | create_exception_master_breakpoint (); |
1bfeeb0f JL |
12257 | |
12258 | /* While we're at it, reset the skip list too. */ | |
12259 | skip_re_set (); | |
c906108c SS |
12260 | } |
12261 | \f | |
c906108c SS |
12262 | /* Reset the thread number of this breakpoint: |
12263 | ||
12264 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 12265 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 12266 | void |
fba45db2 | 12267 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
12268 | { |
12269 | if (b->thread != -1) | |
12270 | { | |
39f77062 KB |
12271 | if (in_thread_list (inferior_ptid)) |
12272 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
12273 | |
12274 | /* We're being called after following a fork. The new fork is | |
12275 | selected as current, and unless this was a vfork will have a | |
12276 | different program space from the original thread. Reset that | |
12277 | as well. */ | |
12278 | b->loc->pspace = current_program_space; | |
c906108c SS |
12279 | } |
12280 | } | |
12281 | ||
03ac34d5 MS |
12282 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12283 | If from_tty is nonzero, it prints a message to that effect, | |
12284 | which ends with a period (no newline). */ | |
12285 | ||
c906108c | 12286 | void |
fba45db2 | 12287 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 12288 | { |
52f0bd74 | 12289 | struct breakpoint *b; |
c906108c SS |
12290 | |
12291 | if (count < 0) | |
12292 | count = 0; | |
12293 | ||
12294 | ALL_BREAKPOINTS (b) | |
12295 | if (b->number == bptnum) | |
c5aa993b | 12296 | { |
d77f58be SS |
12297 | if (is_tracepoint (b)) |
12298 | { | |
12299 | if (from_tty && count != 0) | |
12300 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
12301 | bptnum); | |
12302 | return; | |
12303 | } | |
12304 | ||
c5aa993b | 12305 | b->ignore_count = count; |
221ea385 KS |
12306 | if (from_tty) |
12307 | { | |
12308 | if (count == 0) | |
3e43a32a MS |
12309 | printf_filtered (_("Will stop next time " |
12310 | "breakpoint %d is reached."), | |
221ea385 KS |
12311 | bptnum); |
12312 | else if (count == 1) | |
a3f17187 | 12313 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
12314 | bptnum); |
12315 | else | |
3e43a32a MS |
12316 | printf_filtered (_("Will ignore next %d " |
12317 | "crossings of breakpoint %d."), | |
221ea385 KS |
12318 | count, bptnum); |
12319 | } | |
c5aa993b | 12320 | breakpoints_changed (); |
8d3788bd | 12321 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
12322 | return; |
12323 | } | |
c906108c | 12324 | |
8a3fe4f8 | 12325 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
12326 | } |
12327 | ||
c906108c SS |
12328 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
12329 | ||
12330 | static void | |
fba45db2 | 12331 | ignore_command (char *args, int from_tty) |
c906108c SS |
12332 | { |
12333 | char *p = args; | |
52f0bd74 | 12334 | int num; |
c906108c SS |
12335 | |
12336 | if (p == 0) | |
e2e0b3e5 | 12337 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 12338 | |
c906108c | 12339 | num = get_number (&p); |
5c44784c | 12340 | if (num == 0) |
8a3fe4f8 | 12341 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 12342 | if (*p == 0) |
8a3fe4f8 | 12343 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
12344 | |
12345 | set_ignore_count (num, | |
12346 | longest_to_int (value_as_long (parse_and_eval (p))), | |
12347 | from_tty); | |
221ea385 KS |
12348 | if (from_tty) |
12349 | printf_filtered ("\n"); | |
c906108c SS |
12350 | } |
12351 | \f | |
12352 | /* Call FUNCTION on each of the breakpoints | |
12353 | whose numbers are given in ARGS. */ | |
12354 | ||
12355 | static void | |
95a42b64 TT |
12356 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
12357 | void *), | |
12358 | void *data) | |
c906108c | 12359 | { |
52f0bd74 AC |
12360 | int num; |
12361 | struct breakpoint *b, *tmp; | |
11cf8741 | 12362 | int match; |
197f0a60 | 12363 | struct get_number_or_range_state state; |
c906108c | 12364 | |
197f0a60 | 12365 | if (args == 0) |
e2e0b3e5 | 12366 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 12367 | |
197f0a60 TT |
12368 | init_number_or_range (&state, args); |
12369 | ||
12370 | while (!state.finished) | |
c906108c | 12371 | { |
197f0a60 TT |
12372 | char *p = state.string; |
12373 | ||
11cf8741 | 12374 | match = 0; |
c5aa993b | 12375 | |
197f0a60 | 12376 | num = get_number_or_range (&state); |
5c44784c | 12377 | if (num == 0) |
c5aa993b | 12378 | { |
8a3fe4f8 | 12379 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
12380 | } |
12381 | else | |
12382 | { | |
12383 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
12384 | if (b->number == num) | |
12385 | { | |
11cf8741 | 12386 | match = 1; |
cdac0397 | 12387 | function (b, data); |
11cf8741 | 12388 | break; |
5c44784c | 12389 | } |
11cf8741 | 12390 | if (match == 0) |
a3f17187 | 12391 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 12392 | } |
c906108c SS |
12393 | } |
12394 | } | |
12395 | ||
0d381245 VP |
12396 | static struct bp_location * |
12397 | find_location_by_number (char *number) | |
12398 | { | |
12399 | char *dot = strchr (number, '.'); | |
12400 | char *p1; | |
12401 | int bp_num; | |
12402 | int loc_num; | |
12403 | struct breakpoint *b; | |
12404 | struct bp_location *loc; | |
12405 | ||
12406 | *dot = '\0'; | |
12407 | ||
12408 | p1 = number; | |
197f0a60 | 12409 | bp_num = get_number (&p1); |
0d381245 VP |
12410 | if (bp_num == 0) |
12411 | error (_("Bad breakpoint number '%s'"), number); | |
12412 | ||
12413 | ALL_BREAKPOINTS (b) | |
12414 | if (b->number == bp_num) | |
12415 | { | |
12416 | break; | |
12417 | } | |
12418 | ||
12419 | if (!b || b->number != bp_num) | |
12420 | error (_("Bad breakpoint number '%s'"), number); | |
12421 | ||
12422 | p1 = dot+1; | |
197f0a60 | 12423 | loc_num = get_number (&p1); |
0d381245 VP |
12424 | if (loc_num == 0) |
12425 | error (_("Bad breakpoint location number '%s'"), number); | |
12426 | ||
12427 | --loc_num; | |
12428 | loc = b->loc; | |
12429 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
12430 | ; | |
12431 | if (!loc) | |
12432 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
12433 | ||
12434 | return loc; | |
12435 | } | |
12436 | ||
12437 | ||
1900040c MS |
12438 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
12439 | If from_tty is nonzero, it prints a message to that effect, | |
12440 | which ends with a period (no newline). */ | |
12441 | ||
c906108c | 12442 | void |
fba45db2 | 12443 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
12444 | { |
12445 | /* Never disable a watchpoint scope breakpoint; we want to | |
12446 | hit them when we leave scope so we can delete both the | |
12447 | watchpoint and its scope breakpoint at that time. */ | |
12448 | if (bpt->type == bp_watchpoint_scope) | |
12449 | return; | |
12450 | ||
c2c6d25f | 12451 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 12452 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
12453 | return; |
12454 | ||
b5de0fa7 | 12455 | bpt->enable_state = bp_disabled; |
c906108c | 12456 | |
d248b706 KY |
12457 | if (target_supports_enable_disable_tracepoint () |
12458 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
12459 | { | |
12460 | struct bp_location *location; | |
12461 | ||
12462 | for (location = bpt->loc; location; location = location->next) | |
12463 | target_disable_tracepoint (location); | |
12464 | } | |
12465 | ||
b60e7edf | 12466 | update_global_location_list (0); |
c906108c | 12467 | |
8d3788bd | 12468 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
12469 | } |
12470 | ||
51be5b68 PA |
12471 | /* A callback for iterate_over_related_breakpoints. */ |
12472 | ||
12473 | static void | |
12474 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
12475 | { | |
12476 | disable_breakpoint (b); | |
12477 | } | |
12478 | ||
95a42b64 TT |
12479 | /* A callback for map_breakpoint_numbers that calls |
12480 | disable_breakpoint. */ | |
12481 | ||
12482 | static void | |
12483 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
12484 | { | |
51be5b68 | 12485 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
12486 | } |
12487 | ||
c906108c | 12488 | static void |
fba45db2 | 12489 | disable_command (char *args, int from_tty) |
c906108c | 12490 | { |
c906108c | 12491 | if (args == 0) |
46c6471b PA |
12492 | { |
12493 | struct breakpoint *bpt; | |
12494 | ||
12495 | ALL_BREAKPOINTS (bpt) | |
12496 | if (user_breakpoint_p (bpt)) | |
12497 | disable_breakpoint (bpt); | |
12498 | } | |
0d381245 VP |
12499 | else if (strchr (args, '.')) |
12500 | { | |
12501 | struct bp_location *loc = find_location_by_number (args); | |
12502 | if (loc) | |
d248b706 KY |
12503 | { |
12504 | loc->enabled = 0; | |
12505 | if (target_supports_enable_disable_tracepoint () | |
12506 | && current_trace_status ()->running && loc->owner | |
12507 | && is_tracepoint (loc->owner)) | |
12508 | target_disable_tracepoint (loc); | |
12509 | } | |
b60e7edf | 12510 | update_global_location_list (0); |
0d381245 | 12511 | } |
c906108c | 12512 | else |
95a42b64 | 12513 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
12514 | } |
12515 | ||
12516 | static void | |
51be5b68 | 12517 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition) |
c906108c | 12518 | { |
afe38095 | 12519 | int target_resources_ok; |
c906108c SS |
12520 | |
12521 | if (bpt->type == bp_hardware_breakpoint) | |
12522 | { | |
12523 | int i; | |
c5aa993b | 12524 | i = hw_breakpoint_used_count (); |
53a5351d | 12525 | target_resources_ok = |
d92524f1 | 12526 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 12527 | i + 1, 0); |
c906108c | 12528 | if (target_resources_ok == 0) |
8a3fe4f8 | 12529 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 12530 | else if (target_resources_ok < 0) |
8a3fe4f8 | 12531 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
12532 | } |
12533 | ||
cc60f2e3 | 12534 | if (is_watchpoint (bpt)) |
c906108c | 12535 | { |
d07205c2 JK |
12536 | /* Initialize it just to avoid a GCC false warning. */ |
12537 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 12538 | volatile struct gdb_exception e; |
dde02812 ES |
12539 | |
12540 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 12541 | { |
3a5c3e22 PA |
12542 | struct watchpoint *w = (struct watchpoint *) bpt; |
12543 | ||
1e718ff1 TJB |
12544 | orig_enable_state = bpt->enable_state; |
12545 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 12546 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 12547 | } |
dde02812 | 12548 | if (e.reason < 0) |
c5aa993b | 12549 | { |
1e718ff1 | 12550 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
12551 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
12552 | bpt->number); | |
12553 | return; | |
c5aa993b | 12554 | } |
c906108c | 12555 | } |
0101ce28 | 12556 | |
b4c291bb KH |
12557 | if (bpt->enable_state != bp_permanent) |
12558 | bpt->enable_state = bp_enabled; | |
d248b706 KY |
12559 | |
12560 | if (target_supports_enable_disable_tracepoint () | |
12561 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
12562 | { | |
12563 | struct bp_location *location; | |
12564 | ||
12565 | for (location = bpt->loc; location; location = location->next) | |
12566 | target_enable_tracepoint (location); | |
12567 | } | |
12568 | ||
b4c291bb | 12569 | bpt->disposition = disposition; |
b60e7edf | 12570 | update_global_location_list (1); |
b4c291bb KH |
12571 | breakpoints_changed (); |
12572 | ||
8d3788bd | 12573 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
12574 | } |
12575 | ||
fe3f5fa8 | 12576 | |
c906108c | 12577 | void |
fba45db2 | 12578 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 12579 | { |
51be5b68 PA |
12580 | enable_breakpoint_disp (bpt, bpt->disposition); |
12581 | } | |
12582 | ||
12583 | static void | |
12584 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
12585 | { | |
12586 | enable_breakpoint (bpt); | |
c906108c SS |
12587 | } |
12588 | ||
95a42b64 TT |
12589 | /* A callback for map_breakpoint_numbers that calls |
12590 | enable_breakpoint. */ | |
12591 | ||
12592 | static void | |
12593 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
12594 | { | |
51be5b68 | 12595 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
12596 | } |
12597 | ||
c906108c SS |
12598 | /* The enable command enables the specified breakpoints (or all defined |
12599 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 12600 | in stopping the inferior. */ |
c906108c | 12601 | |
c906108c | 12602 | static void |
fba45db2 | 12603 | enable_command (char *args, int from_tty) |
c906108c | 12604 | { |
c906108c | 12605 | if (args == 0) |
46c6471b PA |
12606 | { |
12607 | struct breakpoint *bpt; | |
12608 | ||
12609 | ALL_BREAKPOINTS (bpt) | |
12610 | if (user_breakpoint_p (bpt)) | |
12611 | enable_breakpoint (bpt); | |
12612 | } | |
0d381245 VP |
12613 | else if (strchr (args, '.')) |
12614 | { | |
12615 | struct bp_location *loc = find_location_by_number (args); | |
12616 | if (loc) | |
d248b706 KY |
12617 | { |
12618 | loc->enabled = 1; | |
12619 | if (target_supports_enable_disable_tracepoint () | |
12620 | && current_trace_status ()->running && loc->owner | |
12621 | && is_tracepoint (loc->owner)) | |
12622 | target_enable_tracepoint (loc); | |
12623 | } | |
b60e7edf | 12624 | update_global_location_list (1); |
0d381245 | 12625 | } |
c906108c | 12626 | else |
95a42b64 | 12627 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
12628 | } |
12629 | ||
12630 | static void | |
51be5b68 PA |
12631 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
12632 | { | |
12633 | enum bpdisp disp = *(enum bpdisp *) arg; | |
12634 | ||
12635 | enable_breakpoint_disp (bpt, disp); | |
12636 | } | |
12637 | ||
12638 | static void | |
12639 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 12640 | { |
51be5b68 PA |
12641 | enum bpdisp disp = disp_disable; |
12642 | ||
12643 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
12644 | } |
12645 | ||
c906108c | 12646 | static void |
fba45db2 | 12647 | enable_once_command (char *args, int from_tty) |
c906108c | 12648 | { |
51be5b68 | 12649 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
12650 | } |
12651 | ||
12652 | static void | |
51be5b68 | 12653 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 12654 | { |
51be5b68 PA |
12655 | enum bpdisp disp = disp_del; |
12656 | ||
12657 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
12658 | } |
12659 | ||
c906108c | 12660 | static void |
fba45db2 | 12661 | enable_delete_command (char *args, int from_tty) |
c906108c | 12662 | { |
51be5b68 | 12663 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
12664 | } |
12665 | \f | |
fa8d40ab JJ |
12666 | static void |
12667 | set_breakpoint_cmd (char *args, int from_tty) | |
12668 | { | |
12669 | } | |
12670 | ||
12671 | static void | |
12672 | show_breakpoint_cmd (char *args, int from_tty) | |
12673 | { | |
12674 | } | |
12675 | ||
1f3b5d1b PP |
12676 | /* Invalidate last known value of any hardware watchpoint if |
12677 | the memory which that value represents has been written to by | |
12678 | GDB itself. */ | |
12679 | ||
12680 | static void | |
12681 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
12682 | const bfd_byte *data) | |
12683 | { | |
12684 | struct breakpoint *bp; | |
12685 | ||
12686 | ALL_BREAKPOINTS (bp) | |
12687 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 12688 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 12689 | { |
3a5c3e22 | 12690 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 12691 | |
3a5c3e22 PA |
12692 | if (wp->val_valid && wp->val) |
12693 | { | |
12694 | struct bp_location *loc; | |
12695 | ||
12696 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
12697 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
12698 | && loc->address + loc->length > addr | |
12699 | && addr + len > loc->address) | |
12700 | { | |
12701 | value_free (wp->val); | |
12702 | wp->val = NULL; | |
12703 | wp->val_valid = 0; | |
12704 | } | |
12705 | } | |
1f3b5d1b PP |
12706 | } |
12707 | } | |
12708 | ||
1bfeeb0f JL |
12709 | /* Use the last displayed codepoint's values, or nothing |
12710 | if they aren't valid. */ | |
c906108c SS |
12711 | |
12712 | struct symtabs_and_lines | |
f8eba3c6 | 12713 | decode_line_spec_1 (char *string, int flags) |
c906108c SS |
12714 | { |
12715 | struct symtabs_and_lines sals; | |
cc59ec59 | 12716 | |
c906108c | 12717 | if (string == 0) |
8a3fe4f8 | 12718 | error (_("Empty line specification.")); |
1bfeeb0f | 12719 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 12720 | sals = decode_line_1 (&string, flags, |
1bfeeb0f | 12721 | get_last_displayed_symtab (), |
f8eba3c6 | 12722 | get_last_displayed_line ()); |
c906108c | 12723 | else |
f8eba3c6 | 12724 | sals = decode_line_1 (&string, flags, (struct symtab *) NULL, 0); |
c906108c | 12725 | if (*string) |
8a3fe4f8 | 12726 | error (_("Junk at end of line specification: %s"), string); |
c906108c SS |
12727 | return sals; |
12728 | } | |
8181d85f DJ |
12729 | |
12730 | /* Create and insert a raw software breakpoint at PC. Return an | |
12731 | identifier, which should be used to remove the breakpoint later. | |
12732 | In general, places which call this should be using something on the | |
12733 | breakpoint chain instead; this function should be eliminated | |
12734 | someday. */ | |
12735 | ||
12736 | void * | |
6c95b8df PA |
12737 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
12738 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
12739 | { |
12740 | struct bp_target_info *bp_tgt; | |
12741 | ||
6c95b8df | 12742 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 12743 | |
6c95b8df | 12744 | bp_tgt->placed_address_space = aspace; |
8181d85f | 12745 | bp_tgt->placed_address = pc; |
6c95b8df | 12746 | |
a6d9a66e | 12747 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
12748 | { |
12749 | /* Could not insert the breakpoint. */ | |
12750 | xfree (bp_tgt); | |
12751 | return NULL; | |
12752 | } | |
12753 | ||
12754 | return bp_tgt; | |
12755 | } | |
12756 | ||
4a64f543 MS |
12757 | /* Remove a breakpoint BP inserted by |
12758 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
12759 | |
12760 | int | |
a6d9a66e | 12761 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
12762 | { |
12763 | struct bp_target_info *bp_tgt = bp; | |
12764 | int ret; | |
12765 | ||
a6d9a66e | 12766 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
12767 | xfree (bp_tgt); |
12768 | ||
12769 | return ret; | |
12770 | } | |
12771 | ||
4a64f543 MS |
12772 | /* One (or perhaps two) breakpoints used for software single |
12773 | stepping. */ | |
8181d85f DJ |
12774 | |
12775 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 12776 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
12777 | |
12778 | /* Create and insert a breakpoint for software single step. */ | |
12779 | ||
12780 | void | |
6c95b8df | 12781 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
12782 | struct address_space *aspace, |
12783 | CORE_ADDR next_pc) | |
8181d85f DJ |
12784 | { |
12785 | void **bpt_p; | |
12786 | ||
12787 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
12788 | { |
12789 | bpt_p = &single_step_breakpoints[0]; | |
12790 | single_step_gdbarch[0] = gdbarch; | |
12791 | } | |
8181d85f DJ |
12792 | else |
12793 | { | |
12794 | gdb_assert (single_step_breakpoints[1] == NULL); | |
12795 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 12796 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
12797 | } |
12798 | ||
4a64f543 MS |
12799 | /* NOTE drow/2006-04-11: A future improvement to this function would |
12800 | be to only create the breakpoints once, and actually put them on | |
12801 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
12802 | We could adjust the addresses each time they were needed. Doing | |
12803 | this requires corresponding changes elsewhere where single step | |
12804 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 12805 | |
6c95b8df | 12806 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 12807 | if (*bpt_p == NULL) |
5af949e3 UW |
12808 | error (_("Could not insert single-step breakpoint at %s"), |
12809 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
12810 | } |
12811 | ||
f02253f1 HZ |
12812 | /* Check if the breakpoints used for software single stepping |
12813 | were inserted or not. */ | |
12814 | ||
12815 | int | |
12816 | single_step_breakpoints_inserted (void) | |
12817 | { | |
12818 | return (single_step_breakpoints[0] != NULL | |
12819 | || single_step_breakpoints[1] != NULL); | |
12820 | } | |
12821 | ||
8181d85f DJ |
12822 | /* Remove and delete any breakpoints used for software single step. */ |
12823 | ||
12824 | void | |
12825 | remove_single_step_breakpoints (void) | |
12826 | { | |
12827 | gdb_assert (single_step_breakpoints[0] != NULL); | |
12828 | ||
12829 | /* See insert_single_step_breakpoint for more about this deprecated | |
12830 | call. */ | |
a6d9a66e UW |
12831 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
12832 | single_step_breakpoints[0]); | |
12833 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
12834 | single_step_breakpoints[0] = NULL; |
12835 | ||
12836 | if (single_step_breakpoints[1] != NULL) | |
12837 | { | |
a6d9a66e UW |
12838 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
12839 | single_step_breakpoints[1]); | |
12840 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
12841 | single_step_breakpoints[1] = NULL; |
12842 | } | |
12843 | } | |
12844 | ||
d03285ec UW |
12845 | /* Delete software single step breakpoints without removing them from |
12846 | the inferior. This is intended to be used if the inferior's address | |
12847 | space where they were inserted is already gone, e.g. after exit or | |
12848 | exec. */ | |
12849 | ||
12850 | void | |
12851 | cancel_single_step_breakpoints (void) | |
12852 | { | |
12853 | int i; | |
12854 | ||
12855 | for (i = 0; i < 2; i++) | |
12856 | if (single_step_breakpoints[i]) | |
12857 | { | |
12858 | xfree (single_step_breakpoints[i]); | |
12859 | single_step_breakpoints[i] = NULL; | |
12860 | single_step_gdbarch[i] = NULL; | |
12861 | } | |
12862 | } | |
12863 | ||
12864 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
12865 | removing them. */ | |
12866 | ||
12867 | static void | |
12868 | detach_single_step_breakpoints (void) | |
12869 | { | |
12870 | int i; | |
12871 | ||
12872 | for (i = 0; i < 2; i++) | |
12873 | if (single_step_breakpoints[i]) | |
12874 | target_remove_breakpoint (single_step_gdbarch[i], | |
12875 | single_step_breakpoints[i]); | |
12876 | } | |
12877 | ||
4a64f543 MS |
12878 | /* Check whether a software single-step breakpoint is inserted at |
12879 | PC. */ | |
1aafd4da UW |
12880 | |
12881 | static int | |
cc59ec59 MS |
12882 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
12883 | CORE_ADDR pc) | |
1aafd4da UW |
12884 | { |
12885 | int i; | |
12886 | ||
12887 | for (i = 0; i < 2; i++) | |
12888 | { | |
12889 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
12890 | if (bp_tgt |
12891 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
12892 | bp_tgt->placed_address, | |
12893 | aspace, pc)) | |
1aafd4da UW |
12894 | return 1; |
12895 | } | |
12896 | ||
12897 | return 0; | |
12898 | } | |
12899 | ||
a96d9b2e SDJ |
12900 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
12901 | non-zero otherwise. */ | |
12902 | static int | |
12903 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
12904 | { | |
12905 | if (syscall_catchpoint_p (bp) | |
12906 | && bp->enable_state != bp_disabled | |
12907 | && bp->enable_state != bp_call_disabled) | |
12908 | return 1; | |
12909 | else | |
12910 | return 0; | |
12911 | } | |
12912 | ||
12913 | int | |
12914 | catch_syscall_enabled (void) | |
12915 | { | |
12916 | struct inferior *inf = current_inferior (); | |
12917 | ||
12918 | return inf->total_syscalls_count != 0; | |
12919 | } | |
12920 | ||
12921 | int | |
12922 | catching_syscall_number (int syscall_number) | |
12923 | { | |
12924 | struct breakpoint *bp; | |
12925 | ||
12926 | ALL_BREAKPOINTS (bp) | |
12927 | if (is_syscall_catchpoint_enabled (bp)) | |
12928 | { | |
be5c67c1 PA |
12929 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
12930 | ||
12931 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
12932 | { |
12933 | int i, iter; | |
12934 | for (i = 0; | |
be5c67c1 | 12935 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
12936 | i++) |
12937 | if (syscall_number == iter) | |
12938 | return 1; | |
12939 | } | |
12940 | else | |
12941 | return 1; | |
12942 | } | |
12943 | ||
12944 | return 0; | |
12945 | } | |
12946 | ||
12947 | /* Complete syscall names. Used by "catch syscall". */ | |
12948 | static char ** | |
12949 | catch_syscall_completer (struct cmd_list_element *cmd, | |
12950 | char *text, char *word) | |
12951 | { | |
12952 | const char **list = get_syscall_names (); | |
c38eea1a MS |
12953 | char **retlist |
12954 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); | |
cc59ec59 | 12955 | |
c38eea1a MS |
12956 | xfree (list); |
12957 | return retlist; | |
a96d9b2e SDJ |
12958 | } |
12959 | ||
1042e4c0 SS |
12960 | /* Tracepoint-specific operations. */ |
12961 | ||
12962 | /* Set tracepoint count to NUM. */ | |
12963 | static void | |
12964 | set_tracepoint_count (int num) | |
12965 | { | |
12966 | tracepoint_count = num; | |
4fa62494 | 12967 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
12968 | } |
12969 | ||
12970 | void | |
12971 | trace_command (char *arg, int from_tty) | |
12972 | { | |
8cdf0e15 VP |
12973 | if (create_breakpoint (get_current_arch (), |
12974 | arg, | |
12975 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
12976 | 0 /* tempflag */, |
12977 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
12978 | 0 /* Ignore count */, |
12979 | pending_break_support, | |
348d480f | 12980 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 12981 | from_tty, |
84f4c1fe PM |
12982 | 1 /* enabled */, |
12983 | 0 /* internal */)) | |
fd9b8c24 | 12984 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
12985 | } |
12986 | ||
7a697b8d SS |
12987 | void |
12988 | ftrace_command (char *arg, int from_tty) | |
12989 | { | |
8cdf0e15 VP |
12990 | if (create_breakpoint (get_current_arch (), |
12991 | arg, | |
12992 | NULL, 0, 1 /* parse arg */, | |
0fb4aa4b PA |
12993 | 0 /* tempflag */, |
12994 | bp_fast_tracepoint /* type_wanted */, | |
12995 | 0 /* Ignore count */, | |
12996 | pending_break_support, | |
348d480f | 12997 | &tracepoint_breakpoint_ops, |
0fb4aa4b | 12998 | from_tty, |
84f4c1fe PM |
12999 | 1 /* enabled */, |
13000 | 0 /* internal */)) | |
0fb4aa4b PA |
13001 | set_tracepoint_count (breakpoint_count); |
13002 | } | |
13003 | ||
13004 | /* strace command implementation. Creates a static tracepoint. */ | |
13005 | ||
13006 | void | |
13007 | strace_command (char *arg, int from_tty) | |
13008 | { | |
983af33b SDJ |
13009 | struct breakpoint_ops *ops; |
13010 | ||
13011 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
13012 | or with a normal static tracepoint. */ | |
13013 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
13014 | ops = &strace_marker_breakpoint_ops; | |
13015 | else | |
13016 | ops = &tracepoint_breakpoint_ops; | |
13017 | ||
0fb4aa4b PA |
13018 | if (create_breakpoint (get_current_arch (), |
13019 | arg, | |
13020 | NULL, 0, 1 /* parse arg */, | |
13021 | 0 /* tempflag */, | |
13022 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
13023 | 0 /* Ignore count */, |
13024 | pending_break_support, | |
983af33b | 13025 | ops, |
8cdf0e15 | 13026 | from_tty, |
84f4c1fe PM |
13027 | 1 /* enabled */, |
13028 | 0 /* internal */)) | |
fd9b8c24 | 13029 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
13030 | } |
13031 | ||
409873ef SS |
13032 | /* Set up a fake reader function that gets command lines from a linked |
13033 | list that was acquired during tracepoint uploading. */ | |
13034 | ||
13035 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 13036 | static int next_cmd; |
409873ef SS |
13037 | |
13038 | static char * | |
13039 | read_uploaded_action (void) | |
13040 | { | |
13041 | char *rslt; | |
13042 | ||
3149d8c1 | 13043 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 13044 | |
3149d8c1 | 13045 | next_cmd++; |
409873ef SS |
13046 | |
13047 | return rslt; | |
13048 | } | |
13049 | ||
00bf0b85 SS |
13050 | /* Given information about a tracepoint as recorded on a target (which |
13051 | can be either a live system or a trace file), attempt to create an | |
13052 | equivalent GDB tracepoint. This is not a reliable process, since | |
13053 | the target does not necessarily have all the information used when | |
13054 | the tracepoint was originally defined. */ | |
13055 | ||
d9b3f62e | 13056 | struct tracepoint * |
00bf0b85 | 13057 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 13058 | { |
409873ef | 13059 | char *addr_str, small_buf[100]; |
d9b3f62e | 13060 | struct tracepoint *tp; |
fd9b8c24 | 13061 | |
409873ef SS |
13062 | if (utp->at_string) |
13063 | addr_str = utp->at_string; | |
13064 | else | |
13065 | { | |
13066 | /* In the absence of a source location, fall back to raw | |
13067 | address. Since there is no way to confirm that the address | |
13068 | means the same thing as when the trace was started, warn the | |
13069 | user. */ | |
3e43a32a MS |
13070 | warning (_("Uploaded tracepoint %d has no " |
13071 | "source location, using raw address"), | |
409873ef SS |
13072 | utp->number); |
13073 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
13074 | addr_str = small_buf; | |
13075 | } | |
13076 | ||
13077 | /* There's not much we can do with a sequence of bytecodes. */ | |
13078 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
13079 | warning (_("Uploaded tracepoint %d condition " |
13080 | "has no source form, ignoring it"), | |
409873ef | 13081 | utp->number); |
d5551862 | 13082 | |
8cdf0e15 | 13083 | if (!create_breakpoint (get_current_arch (), |
409873ef SS |
13084 | addr_str, |
13085 | utp->cond_string, -1, 0 /* parse cond/thread */, | |
8cdf0e15 | 13086 | 0 /* tempflag */, |
0fb4aa4b | 13087 | utp->type /* type_wanted */, |
8cdf0e15 VP |
13088 | 0 /* Ignore count */, |
13089 | pending_break_support, | |
348d480f | 13090 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 13091 | 0 /* from_tty */, |
84f4c1fe PM |
13092 | utp->enabled /* enabled */, |
13093 | 0 /* internal */)) | |
fd9b8c24 PA |
13094 | return NULL; |
13095 | ||
00bf0b85 SS |
13096 | set_tracepoint_count (breakpoint_count); |
13097 | ||
409873ef | 13098 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
13099 | tp = get_tracepoint (tracepoint_count); |
13100 | gdb_assert (tp != NULL); | |
d5551862 | 13101 | |
00bf0b85 SS |
13102 | if (utp->pass > 0) |
13103 | { | |
d9b3f62e | 13104 | sprintf (small_buf, "%d %d", utp->pass, tp->base.number); |
00bf0b85 | 13105 | |
409873ef | 13106 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
13107 | } |
13108 | ||
409873ef SS |
13109 | /* If we have uploaded versions of the original commands, set up a |
13110 | special-purpose "reader" function and call the usual command line | |
13111 | reader, then pass the result to the breakpoint command-setting | |
13112 | function. */ | |
3149d8c1 | 13113 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 13114 | { |
409873ef | 13115 | struct command_line *cmd_list; |
00bf0b85 | 13116 | |
409873ef | 13117 | this_utp = utp; |
3149d8c1 | 13118 | next_cmd = 0; |
d5551862 | 13119 | |
409873ef SS |
13120 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
13121 | ||
d9b3f62e | 13122 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 13123 | } |
3149d8c1 SS |
13124 | else if (!VEC_empty (char_ptr, utp->actions) |
13125 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
13126 | warning (_("Uploaded tracepoint %d actions " |
13127 | "have no source form, ignoring them"), | |
409873ef | 13128 | utp->number); |
00bf0b85 | 13129 | |
f196051f SS |
13130 | /* Copy any status information that might be available. */ |
13131 | tp->base.hit_count = utp->hit_count; | |
13132 | tp->traceframe_usage = utp->traceframe_usage; | |
13133 | ||
00bf0b85 | 13134 | return tp; |
d9b3f62e | 13135 | } |
00bf0b85 | 13136 | |
1042e4c0 SS |
13137 | /* Print information on tracepoint number TPNUM_EXP, or all if |
13138 | omitted. */ | |
13139 | ||
13140 | static void | |
e5a67952 | 13141 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 13142 | { |
79a45e25 | 13143 | struct ui_out *uiout = current_uiout; |
e5a67952 | 13144 | int num_printed; |
1042e4c0 | 13145 | |
e5a67952 | 13146 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
13147 | |
13148 | if (num_printed == 0) | |
1042e4c0 | 13149 | { |
e5a67952 | 13150 | if (args == NULL || *args == '\0') |
d77f58be SS |
13151 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
13152 | else | |
e5a67952 | 13153 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 13154 | } |
ad443146 SS |
13155 | |
13156 | default_collect_info (); | |
1042e4c0 SS |
13157 | } |
13158 | ||
4a64f543 | 13159 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
13160 | Not supported by all targets. */ |
13161 | static void | |
13162 | enable_trace_command (char *args, int from_tty) | |
13163 | { | |
13164 | enable_command (args, from_tty); | |
13165 | } | |
13166 | ||
4a64f543 | 13167 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
13168 | Not supported by all targets. */ |
13169 | static void | |
13170 | disable_trace_command (char *args, int from_tty) | |
13171 | { | |
13172 | disable_command (args, from_tty); | |
13173 | } | |
13174 | ||
4a64f543 | 13175 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
13176 | static void |
13177 | delete_trace_command (char *arg, int from_tty) | |
13178 | { | |
35df4500 | 13179 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
13180 | |
13181 | dont_repeat (); | |
13182 | ||
13183 | if (arg == 0) | |
13184 | { | |
13185 | int breaks_to_delete = 0; | |
13186 | ||
13187 | /* Delete all breakpoints if no argument. | |
13188 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
13189 | have to be deleted with an explicit breakpoint number |
13190 | argument. */ | |
1042e4c0 | 13191 | ALL_TRACEPOINTS (b) |
46c6471b | 13192 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
13193 | { |
13194 | breaks_to_delete = 1; | |
13195 | break; | |
13196 | } | |
1042e4c0 SS |
13197 | |
13198 | /* Ask user only if there are some breakpoints to delete. */ | |
13199 | if (!from_tty | |
13200 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
13201 | { | |
35df4500 | 13202 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13203 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 13204 | delete_breakpoint (b); |
1042e4c0 SS |
13205 | } |
13206 | } | |
13207 | else | |
51be5b68 | 13208 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
13209 | } |
13210 | ||
197f0a60 TT |
13211 | /* Helper function for trace_pass_command. */ |
13212 | ||
13213 | static void | |
d9b3f62e | 13214 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 13215 | { |
d9b3f62e PA |
13216 | tp->pass_count = count; |
13217 | observer_notify_tracepoint_modified (tp->base.number); | |
197f0a60 TT |
13218 | if (from_tty) |
13219 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 13220 | tp->base.number, count); |
197f0a60 TT |
13221 | } |
13222 | ||
1042e4c0 SS |
13223 | /* Set passcount for tracepoint. |
13224 | ||
13225 | First command argument is passcount, second is tracepoint number. | |
13226 | If tracepoint number omitted, apply to most recently defined. | |
13227 | Also accepts special argument "all". */ | |
13228 | ||
13229 | static void | |
13230 | trace_pass_command (char *args, int from_tty) | |
13231 | { | |
d9b3f62e | 13232 | struct tracepoint *t1; |
1042e4c0 | 13233 | unsigned int count; |
1042e4c0 SS |
13234 | |
13235 | if (args == 0 || *args == 0) | |
3e43a32a MS |
13236 | error (_("passcount command requires an " |
13237 | "argument (count + optional TP num)")); | |
1042e4c0 | 13238 | |
4a64f543 | 13239 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
13240 | |
13241 | while (*args && isspace ((int) *args)) | |
13242 | args++; | |
13243 | ||
13244 | if (*args && strncasecmp (args, "all", 3) == 0) | |
13245 | { | |
d9b3f62e PA |
13246 | struct breakpoint *b; |
13247 | ||
1042e4c0 | 13248 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
13249 | if (*args) |
13250 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 13251 | |
d9b3f62e | 13252 | ALL_TRACEPOINTS (b) |
197f0a60 | 13253 | { |
d9b3f62e | 13254 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
13255 | trace_pass_set_count (t1, count, from_tty); |
13256 | } | |
13257 | } | |
13258 | else if (*args == '\0') | |
1042e4c0 | 13259 | { |
197f0a60 | 13260 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 13261 | if (t1) |
197f0a60 TT |
13262 | trace_pass_set_count (t1, count, from_tty); |
13263 | } | |
13264 | else | |
13265 | { | |
13266 | struct get_number_or_range_state state; | |
13267 | ||
13268 | init_number_or_range (&state, args); | |
13269 | while (!state.finished) | |
1042e4c0 | 13270 | { |
197f0a60 TT |
13271 | t1 = get_tracepoint_by_number (&args, &state, 1); |
13272 | if (t1) | |
13273 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
13274 | } |
13275 | } | |
1042e4c0 SS |
13276 | } |
13277 | ||
d9b3f62e | 13278 | struct tracepoint * |
1042e4c0 SS |
13279 | get_tracepoint (int num) |
13280 | { | |
13281 | struct breakpoint *t; | |
13282 | ||
13283 | ALL_TRACEPOINTS (t) | |
13284 | if (t->number == num) | |
d9b3f62e | 13285 | return (struct tracepoint *) t; |
1042e4c0 SS |
13286 | |
13287 | return NULL; | |
13288 | } | |
13289 | ||
d5551862 SS |
13290 | /* Find the tracepoint with the given target-side number (which may be |
13291 | different from the tracepoint number after disconnecting and | |
13292 | reconnecting). */ | |
13293 | ||
d9b3f62e | 13294 | struct tracepoint * |
d5551862 SS |
13295 | get_tracepoint_by_number_on_target (int num) |
13296 | { | |
d9b3f62e | 13297 | struct breakpoint *b; |
d5551862 | 13298 | |
d9b3f62e PA |
13299 | ALL_TRACEPOINTS (b) |
13300 | { | |
13301 | struct tracepoint *t = (struct tracepoint *) b; | |
13302 | ||
13303 | if (t->number_on_target == num) | |
13304 | return t; | |
13305 | } | |
d5551862 SS |
13306 | |
13307 | return NULL; | |
13308 | } | |
13309 | ||
1042e4c0 | 13310 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
13311 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
13312 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 13313 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 13314 | struct tracepoint * |
197f0a60 TT |
13315 | get_tracepoint_by_number (char **arg, |
13316 | struct get_number_or_range_state *state, | |
13317 | int optional_p) | |
1042e4c0 SS |
13318 | { |
13319 | extern int tracepoint_count; | |
13320 | struct breakpoint *t; | |
13321 | int tpnum; | |
13322 | char *instring = arg == NULL ? NULL : *arg; | |
13323 | ||
197f0a60 TT |
13324 | if (state) |
13325 | { | |
13326 | gdb_assert (!state->finished); | |
13327 | tpnum = get_number_or_range (state); | |
13328 | } | |
13329 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
13330 | { |
13331 | if (optional_p) | |
13332 | tpnum = tracepoint_count; | |
13333 | else | |
13334 | error_no_arg (_("tracepoint number")); | |
13335 | } | |
13336 | else | |
197f0a60 | 13337 | tpnum = get_number (arg); |
1042e4c0 SS |
13338 | |
13339 | if (tpnum <= 0) | |
13340 | { | |
13341 | if (instring && *instring) | |
13342 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
13343 | instring); | |
13344 | else | |
3e43a32a MS |
13345 | printf_filtered (_("Tracepoint argument missing " |
13346 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
13347 | return NULL; |
13348 | } | |
13349 | ||
13350 | ALL_TRACEPOINTS (t) | |
13351 | if (t->number == tpnum) | |
13352 | { | |
d9b3f62e | 13353 | return (struct tracepoint *) t; |
1042e4c0 SS |
13354 | } |
13355 | ||
1042e4c0 SS |
13356 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
13357 | return NULL; | |
13358 | } | |
13359 | ||
d9b3f62e PA |
13360 | void |
13361 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
13362 | { | |
13363 | if (b->thread != -1) | |
13364 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
13365 | ||
13366 | if (b->task != 0) | |
13367 | fprintf_unfiltered (fp, " task %d", b->task); | |
13368 | ||
13369 | fprintf_unfiltered (fp, "\n"); | |
13370 | } | |
13371 | ||
6149aea9 PA |
13372 | /* Save information on user settable breakpoints (watchpoints, etc) to |
13373 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
13374 | on each breakpoint and only include the ones for which it returns | |
13375 | non-zero. */ | |
13376 | ||
1042e4c0 | 13377 | static void |
6149aea9 PA |
13378 | save_breakpoints (char *filename, int from_tty, |
13379 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
13380 | { |
13381 | struct breakpoint *tp; | |
6149aea9 | 13382 | int any = 0; |
a7bdde9e | 13383 | char *pathname; |
1042e4c0 | 13384 | struct cleanup *cleanup; |
a7bdde9e | 13385 | struct ui_file *fp; |
6149aea9 | 13386 | int extra_trace_bits = 0; |
1042e4c0 | 13387 | |
6149aea9 PA |
13388 | if (filename == 0 || *filename == 0) |
13389 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
13390 | |
13391 | /* See if we have anything to save. */ | |
6149aea9 | 13392 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 13393 | { |
6149aea9 | 13394 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 13395 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
13396 | continue; |
13397 | ||
13398 | /* If we have a filter, only save the breakpoints it accepts. */ | |
13399 | if (filter && !filter (tp)) | |
13400 | continue; | |
13401 | ||
13402 | any = 1; | |
13403 | ||
13404 | if (is_tracepoint (tp)) | |
13405 | { | |
13406 | extra_trace_bits = 1; | |
13407 | ||
13408 | /* We can stop searching. */ | |
13409 | break; | |
13410 | } | |
1042e4c0 | 13411 | } |
6149aea9 PA |
13412 | |
13413 | if (!any) | |
1042e4c0 | 13414 | { |
6149aea9 | 13415 | warning (_("Nothing to save.")); |
1042e4c0 SS |
13416 | return; |
13417 | } | |
13418 | ||
6149aea9 | 13419 | pathname = tilde_expand (filename); |
1042e4c0 | 13420 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 13421 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 13422 | if (!fp) |
6149aea9 PA |
13423 | error (_("Unable to open file '%s' for saving (%s)"), |
13424 | filename, safe_strerror (errno)); | |
a7bdde9e | 13425 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 13426 | |
6149aea9 PA |
13427 | if (extra_trace_bits) |
13428 | save_trace_state_variables (fp); | |
8bf6485c | 13429 | |
6149aea9 | 13430 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 13431 | { |
6149aea9 | 13432 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 13433 | if (!user_breakpoint_p (tp)) |
6149aea9 | 13434 | continue; |
8bf6485c | 13435 | |
6149aea9 PA |
13436 | /* If we have a filter, only save the breakpoints it accepts. */ |
13437 | if (filter && !filter (tp)) | |
13438 | continue; | |
13439 | ||
348d480f | 13440 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 13441 | |
6149aea9 PA |
13442 | /* Note, we can't rely on tp->number for anything, as we can't |
13443 | assume the recreated breakpoint numbers will match. Use $bpnum | |
13444 | instead. */ | |
13445 | ||
13446 | if (tp->cond_string) | |
13447 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
13448 | ||
13449 | if (tp->ignore_count) | |
13450 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
13451 | ||
a7bdde9e | 13452 | if (tp->commands) |
1042e4c0 | 13453 | { |
a7bdde9e VP |
13454 | volatile struct gdb_exception ex; |
13455 | ||
6149aea9 | 13456 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 13457 | |
79a45e25 | 13458 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 13459 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 13460 | { |
79a45e25 | 13461 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 13462 | } |
79a45e25 | 13463 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 13464 | |
a7bdde9e VP |
13465 | if (ex.reason < 0) |
13466 | throw_exception (ex); | |
1042e4c0 | 13467 | |
a7bdde9e | 13468 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 13469 | } |
6149aea9 PA |
13470 | |
13471 | if (tp->enable_state == bp_disabled) | |
13472 | fprintf_unfiltered (fp, "disable\n"); | |
13473 | ||
13474 | /* If this is a multi-location breakpoint, check if the locations | |
13475 | should be individually disabled. Watchpoint locations are | |
13476 | special, and not user visible. */ | |
13477 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
13478 | { | |
13479 | struct bp_location *loc; | |
13480 | int n = 1; | |
13481 | ||
13482 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
13483 | if (!loc->enabled) | |
13484 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
13485 | } | |
1042e4c0 | 13486 | } |
8bf6485c | 13487 | |
6149aea9 | 13488 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
13489 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
13490 | ||
1042e4c0 SS |
13491 | do_cleanups (cleanup); |
13492 | if (from_tty) | |
6149aea9 PA |
13493 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
13494 | } | |
13495 | ||
13496 | /* The `save breakpoints' command. */ | |
13497 | ||
13498 | static void | |
13499 | save_breakpoints_command (char *args, int from_tty) | |
13500 | { | |
13501 | save_breakpoints (args, from_tty, NULL); | |
13502 | } | |
13503 | ||
13504 | /* The `save tracepoints' command. */ | |
13505 | ||
13506 | static void | |
13507 | save_tracepoints_command (char *args, int from_tty) | |
13508 | { | |
13509 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
13510 | } |
13511 | ||
13512 | /* Create a vector of all tracepoints. */ | |
13513 | ||
13514 | VEC(breakpoint_p) * | |
eeae04df | 13515 | all_tracepoints (void) |
1042e4c0 SS |
13516 | { |
13517 | VEC(breakpoint_p) *tp_vec = 0; | |
13518 | struct breakpoint *tp; | |
13519 | ||
13520 | ALL_TRACEPOINTS (tp) | |
13521 | { | |
13522 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
13523 | } | |
13524 | ||
13525 | return tp_vec; | |
13526 | } | |
13527 | ||
c906108c | 13528 | \f |
4a64f543 MS |
13529 | /* This help string is used for the break, hbreak, tbreak and thbreak |
13530 | commands. It is defined as a macro to prevent duplication. | |
13531 | COMMAND should be a string constant containing the name of the | |
13532 | command. */ | |
31e2b00f AS |
13533 | #define BREAK_ARGS_HELP(command) \ |
13534 | command" [LOCATION] [thread THREADNUM] [if CONDITION]\n\ | |
13535 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ | |
13536 | If a line number is specified, break at start of code for that line.\n\ | |
13537 | If a function is specified, break at start of code for that function.\n\ | |
13538 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
13539 | With no LOCATION, uses current execution address of the selected\n\ |
13540 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
13541 | \n\ |
13542 | THREADNUM is the number from \"info threads\".\n\ | |
13543 | CONDITION is a boolean expression.\n\ | |
13544 | \n\ | |
d41c0fc8 PA |
13545 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
13546 | conditions are different.\n\ | |
31e2b00f AS |
13547 | \n\ |
13548 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
13549 | ||
44feb3ce TT |
13550 | /* List of subcommands for "catch". */ |
13551 | static struct cmd_list_element *catch_cmdlist; | |
13552 | ||
13553 | /* List of subcommands for "tcatch". */ | |
13554 | static struct cmd_list_element *tcatch_cmdlist; | |
13555 | ||
9ac4176b | 13556 | void |
44feb3ce TT |
13557 | add_catch_command (char *name, char *docstring, |
13558 | void (*sfunc) (char *args, int from_tty, | |
13559 | struct cmd_list_element *command), | |
a96d9b2e SDJ |
13560 | char **(*completer) (struct cmd_list_element *cmd, |
13561 | char *text, char *word), | |
44feb3ce TT |
13562 | void *user_data_catch, |
13563 | void *user_data_tcatch) | |
13564 | { | |
13565 | struct cmd_list_element *command; | |
13566 | ||
13567 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
13568 | &catch_cmdlist); | |
13569 | set_cmd_sfunc (command, sfunc); | |
13570 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 13571 | set_cmd_completer (command, completer); |
44feb3ce TT |
13572 | |
13573 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
13574 | &tcatch_cmdlist); | |
13575 | set_cmd_sfunc (command, sfunc); | |
13576 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 13577 | set_cmd_completer (command, completer); |
44feb3ce TT |
13578 | } |
13579 | ||
6c95b8df | 13580 | static void |
a79b8f6e | 13581 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 13582 | { |
6c95b8df PA |
13583 | inf->total_syscalls_count = 0; |
13584 | inf->any_syscall_count = 0; | |
13585 | VEC_free (int, inf->syscalls_counts); | |
13586 | } | |
13587 | ||
6149aea9 PA |
13588 | static void |
13589 | save_command (char *arg, int from_tty) | |
13590 | { | |
3e43a32a MS |
13591 | printf_unfiltered (_("\"save\" must be followed by " |
13592 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
13593 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
13594 | } | |
13595 | ||
84f4c1fe PM |
13596 | struct breakpoint * |
13597 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
13598 | void *data) | |
13599 | { | |
35df4500 | 13600 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 13601 | |
35df4500 | 13602 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
13603 | { |
13604 | if ((*callback) (b, data)) | |
13605 | return b; | |
13606 | } | |
13607 | ||
13608 | return NULL; | |
13609 | } | |
13610 | ||
0574c78f GB |
13611 | /* Zero if any of the breakpoint's locations could be a location where |
13612 | functions have been inlined, nonzero otherwise. */ | |
13613 | ||
13614 | static int | |
13615 | is_non_inline_function (struct breakpoint *b) | |
13616 | { | |
13617 | /* The shared library event breakpoint is set on the address of a | |
13618 | non-inline function. */ | |
13619 | if (b->type == bp_shlib_event) | |
13620 | return 1; | |
13621 | ||
13622 | return 0; | |
13623 | } | |
13624 | ||
13625 | /* Nonzero if the specified PC cannot be a location where functions | |
13626 | have been inlined. */ | |
13627 | ||
13628 | int | |
13629 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc) | |
13630 | { | |
13631 | struct breakpoint *b; | |
13632 | struct bp_location *bl; | |
13633 | ||
13634 | ALL_BREAKPOINTS (b) | |
13635 | { | |
13636 | if (!is_non_inline_function (b)) | |
13637 | continue; | |
13638 | ||
13639 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
13640 | { | |
13641 | if (!bl->shlib_disabled | |
13642 | && bpstat_check_location (bl, aspace, pc)) | |
13643 | return 1; | |
13644 | } | |
13645 | } | |
13646 | ||
13647 | return 0; | |
13648 | } | |
13649 | ||
2060206e PA |
13650 | void |
13651 | initialize_breakpoint_ops (void) | |
13652 | { | |
13653 | static int initialized = 0; | |
13654 | ||
13655 | struct breakpoint_ops *ops; | |
13656 | ||
13657 | if (initialized) | |
13658 | return; | |
13659 | initialized = 1; | |
13660 | ||
13661 | /* The breakpoint_ops structure to be inherit by all kinds of | |
13662 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
13663 | internal and momentary breakpoints, etc.). */ | |
13664 | ops = &bkpt_base_breakpoint_ops; | |
13665 | *ops = base_breakpoint_ops; | |
13666 | ops->re_set = bkpt_re_set; | |
13667 | ops->insert_location = bkpt_insert_location; | |
13668 | ops->remove_location = bkpt_remove_location; | |
13669 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
13670 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
13671 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
13672 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
13673 | |
13674 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
13675 | ops = &bkpt_breakpoint_ops; | |
13676 | *ops = bkpt_base_breakpoint_ops; | |
13677 | ops->re_set = bkpt_re_set; | |
13678 | ops->resources_needed = bkpt_resources_needed; | |
13679 | ops->print_it = bkpt_print_it; | |
13680 | ops->print_mention = bkpt_print_mention; | |
13681 | ops->print_recreate = bkpt_print_recreate; | |
13682 | ||
13683 | /* Ranged breakpoints. */ | |
13684 | ops = &ranged_breakpoint_ops; | |
13685 | *ops = bkpt_breakpoint_ops; | |
13686 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
13687 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
13688 | ops->print_it = print_it_ranged_breakpoint; | |
13689 | ops->print_one = print_one_ranged_breakpoint; | |
13690 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
13691 | ops->print_mention = print_mention_ranged_breakpoint; | |
13692 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
13693 | ||
13694 | /* Internal breakpoints. */ | |
13695 | ops = &internal_breakpoint_ops; | |
13696 | *ops = bkpt_base_breakpoint_ops; | |
13697 | ops->re_set = internal_bkpt_re_set; | |
13698 | ops->check_status = internal_bkpt_check_status; | |
13699 | ops->print_it = internal_bkpt_print_it; | |
13700 | ops->print_mention = internal_bkpt_print_mention; | |
13701 | ||
13702 | /* Momentary breakpoints. */ | |
13703 | ops = &momentary_breakpoint_ops; | |
13704 | *ops = bkpt_base_breakpoint_ops; | |
13705 | ops->re_set = momentary_bkpt_re_set; | |
13706 | ops->check_status = momentary_bkpt_check_status; | |
13707 | ops->print_it = momentary_bkpt_print_it; | |
13708 | ops->print_mention = momentary_bkpt_print_mention; | |
13709 | ||
13710 | /* GNU v3 exception catchpoints. */ | |
13711 | ops = &gnu_v3_exception_catchpoint_ops; | |
13712 | *ops = bkpt_breakpoint_ops; | |
13713 | ops->print_it = print_it_exception_catchpoint; | |
13714 | ops->print_one = print_one_exception_catchpoint; | |
13715 | ops->print_mention = print_mention_exception_catchpoint; | |
13716 | ops->print_recreate = print_recreate_exception_catchpoint; | |
13717 | ||
13718 | /* Watchpoints. */ | |
13719 | ops = &watchpoint_breakpoint_ops; | |
13720 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 13721 | ops->dtor = dtor_watchpoint; |
2060206e PA |
13722 | ops->re_set = re_set_watchpoint; |
13723 | ops->insert_location = insert_watchpoint; | |
13724 | ops->remove_location = remove_watchpoint; | |
13725 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
13726 | ops->check_status = check_status_watchpoint; | |
13727 | ops->resources_needed = resources_needed_watchpoint; | |
13728 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
13729 | ops->print_it = print_it_watchpoint; | |
13730 | ops->print_mention = print_mention_watchpoint; | |
13731 | ops->print_recreate = print_recreate_watchpoint; | |
13732 | ||
13733 | /* Masked watchpoints. */ | |
13734 | ops = &masked_watchpoint_breakpoint_ops; | |
13735 | *ops = watchpoint_breakpoint_ops; | |
13736 | ops->insert_location = insert_masked_watchpoint; | |
13737 | ops->remove_location = remove_masked_watchpoint; | |
13738 | ops->resources_needed = resources_needed_masked_watchpoint; | |
13739 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
13740 | ops->print_it = print_it_masked_watchpoint; | |
13741 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
13742 | ops->print_mention = print_mention_masked_watchpoint; | |
13743 | ops->print_recreate = print_recreate_masked_watchpoint; | |
13744 | ||
13745 | /* Tracepoints. */ | |
13746 | ops = &tracepoint_breakpoint_ops; | |
13747 | *ops = base_breakpoint_ops; | |
13748 | ops->re_set = tracepoint_re_set; | |
13749 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
13750 | ops->print_one_detail = tracepoint_print_one_detail; | |
13751 | ops->print_mention = tracepoint_print_mention; | |
13752 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
13753 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
13754 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
13755 | ops->decode_linespec = tracepoint_decode_linespec; | |
13756 | ||
13757 | /* Static tracepoints with marker (`-m'). */ | |
13758 | ops = &strace_marker_breakpoint_ops; | |
13759 | *ops = tracepoint_breakpoint_ops; | |
13760 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
13761 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
13762 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
13763 | |
13764 | /* Fork catchpoints. */ | |
13765 | ops = &catch_fork_breakpoint_ops; | |
13766 | *ops = base_breakpoint_ops; | |
13767 | ops->insert_location = insert_catch_fork; | |
13768 | ops->remove_location = remove_catch_fork; | |
13769 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
13770 | ops->print_it = print_it_catch_fork; | |
13771 | ops->print_one = print_one_catch_fork; | |
13772 | ops->print_mention = print_mention_catch_fork; | |
13773 | ops->print_recreate = print_recreate_catch_fork; | |
13774 | ||
13775 | /* Vfork catchpoints. */ | |
13776 | ops = &catch_vfork_breakpoint_ops; | |
13777 | *ops = base_breakpoint_ops; | |
13778 | ops->insert_location = insert_catch_vfork; | |
13779 | ops->remove_location = remove_catch_vfork; | |
13780 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
13781 | ops->print_it = print_it_catch_vfork; | |
13782 | ops->print_one = print_one_catch_vfork; | |
13783 | ops->print_mention = print_mention_catch_vfork; | |
13784 | ops->print_recreate = print_recreate_catch_vfork; | |
13785 | ||
13786 | /* Exec catchpoints. */ | |
13787 | ops = &catch_exec_breakpoint_ops; | |
13788 | *ops = base_breakpoint_ops; | |
13789 | ops->dtor = dtor_catch_exec; | |
13790 | ops->insert_location = insert_catch_exec; | |
13791 | ops->remove_location = remove_catch_exec; | |
13792 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
13793 | ops->print_it = print_it_catch_exec; | |
13794 | ops->print_one = print_one_catch_exec; | |
13795 | ops->print_mention = print_mention_catch_exec; | |
13796 | ops->print_recreate = print_recreate_catch_exec; | |
13797 | ||
13798 | /* Syscall catchpoints. */ | |
13799 | ops = &catch_syscall_breakpoint_ops; | |
13800 | *ops = base_breakpoint_ops; | |
13801 | ops->dtor = dtor_catch_syscall; | |
13802 | ops->insert_location = insert_catch_syscall; | |
13803 | ops->remove_location = remove_catch_syscall; | |
13804 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
13805 | ops->print_it = print_it_catch_syscall; | |
13806 | ops->print_one = print_one_catch_syscall; | |
13807 | ops->print_mention = print_mention_catch_syscall; | |
13808 | ops->print_recreate = print_recreate_catch_syscall; | |
13809 | } | |
13810 | ||
c906108c | 13811 | void |
fba45db2 | 13812 | _initialize_breakpoint (void) |
c906108c SS |
13813 | { |
13814 | struct cmd_list_element *c; | |
13815 | ||
2060206e PA |
13816 | initialize_breakpoint_ops (); |
13817 | ||
84acb35a | 13818 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 13819 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 13820 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 13821 | |
17450429 PP |
13822 | breakpoint_objfile_key = register_objfile_data (); |
13823 | ||
c906108c SS |
13824 | breakpoint_chain = 0; |
13825 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
13826 | before a breakpoint is set. */ | |
13827 | breakpoint_count = 0; | |
13828 | ||
1042e4c0 SS |
13829 | tracepoint_count = 0; |
13830 | ||
1bedd215 AC |
13831 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
13832 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
13833 | Usage is `ignore N COUNT'.")); | |
c906108c | 13834 | if (xdb_commands) |
c5aa993b | 13835 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 13836 | |
1bedd215 AC |
13837 | add_com ("commands", class_breakpoint, commands_command, _("\ |
13838 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
13839 | Give breakpoint number as argument after \"commands\".\n\ |
13840 | With no argument, the targeted breakpoint is the last one set.\n\ | |
13841 | The commands themselves follow starting on the next line.\n\ | |
13842 | Type a line containing \"end\" to indicate the end of them.\n\ | |
13843 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 13844 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 13845 | |
1bedd215 AC |
13846 | add_com ("condition", class_breakpoint, condition_command, _("\ |
13847 | Specify breakpoint number N to break only if COND is true.\n\ | |
c906108c | 13848 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 13849 | expression to be evaluated whenever breakpoint N is reached.")); |
c906108c | 13850 | |
1bedd215 | 13851 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 13852 | Set a temporary breakpoint.\n\ |
c906108c SS |
13853 | Like \"break\" except the breakpoint is only temporary,\n\ |
13854 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
13855 | by using \"enable delete\" on the breakpoint number.\n\ |
13856 | \n" | |
13857 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 13858 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 13859 | |
1bedd215 | 13860 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 13861 | Set a hardware assisted breakpoint.\n\ |
c906108c | 13862 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
13863 | some target hardware may not have this support.\n\ |
13864 | \n" | |
13865 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 13866 | set_cmd_completer (c, location_completer); |
c906108c | 13867 | |
1bedd215 | 13868 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 13869 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 13870 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
13871 | so it will be deleted when hit.\n\ |
13872 | \n" | |
13873 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 13874 | set_cmd_completer (c, location_completer); |
c906108c | 13875 | |
1bedd215 AC |
13876 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
13877 | Enable some breakpoints.\n\ | |
c906108c SS |
13878 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13879 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
13880 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13881 | With a subcommand you can enable temporarily."), |
c906108c SS |
13882 | &enablelist, "enable ", 1, &cmdlist); |
13883 | if (xdb_commands) | |
1bedd215 AC |
13884 | add_com ("ab", class_breakpoint, enable_command, _("\ |
13885 | Enable some breakpoints.\n\ | |
c906108c SS |
13886 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13887 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
13888 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13889 | With a subcommand you can enable temporarily.")); |
c906108c SS |
13890 | |
13891 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
13892 | ||
84951ab5 | 13893 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 13894 | Enable some breakpoints.\n\ |
c906108c SS |
13895 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
13896 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 13897 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 13898 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 13899 | |
1a966eab AC |
13900 | add_cmd ("once", no_class, enable_once_command, _("\ |
13901 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
13902 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
13903 | &enablebreaklist); |
13904 | ||
1a966eab AC |
13905 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
13906 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
13907 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
13908 | &enablebreaklist); |
13909 | ||
1a966eab AC |
13910 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
13911 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
13912 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
13913 | &enablelist); |
13914 | ||
1a966eab AC |
13915 | add_cmd ("once", no_class, enable_once_command, _("\ |
13916 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
13917 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
13918 | &enablelist); |
13919 | ||
1bedd215 AC |
13920 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
13921 | Disable some breakpoints.\n\ | |
c906108c SS |
13922 | Arguments are breakpoint numbers with spaces in between.\n\ |
13923 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13924 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
13925 | &disablelist, "disable ", 1, &cmdlist); |
13926 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
13927 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
13928 | if (xdb_commands) | |
1bedd215 AC |
13929 | add_com ("sb", class_breakpoint, disable_command, _("\ |
13930 | Disable some breakpoints.\n\ | |
c906108c SS |
13931 | Arguments are breakpoint numbers with spaces in between.\n\ |
13932 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13933 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 13934 | |
1a966eab AC |
13935 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
13936 | Disable some breakpoints.\n\ | |
c906108c SS |
13937 | Arguments are breakpoint numbers with spaces in between.\n\ |
13938 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 13939 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 13940 | This command may be abbreviated \"disable\"."), |
c906108c SS |
13941 | &disablelist); |
13942 | ||
1bedd215 AC |
13943 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
13944 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
13945 | Arguments are breakpoint numbers with spaces in between.\n\ |
13946 | To delete all breakpoints, give no argument.\n\ | |
13947 | \n\ | |
13948 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 13949 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
13950 | &deletelist, "delete ", 1, &cmdlist); |
13951 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 13952 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 13953 | if (xdb_commands) |
1bedd215 AC |
13954 | add_com ("db", class_breakpoint, delete_command, _("\ |
13955 | Delete some breakpoints.\n\ | |
c906108c | 13956 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 13957 | To delete all breakpoints, give no argument.\n")); |
c906108c | 13958 | |
1a966eab AC |
13959 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
13960 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
13961 | Arguments are breakpoint numbers with spaces in between.\n\ |
13962 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 13963 | This command may be abbreviated \"delete\"."), |
c906108c SS |
13964 | &deletelist); |
13965 | ||
1bedd215 AC |
13966 | add_com ("clear", class_breakpoint, clear_command, _("\ |
13967 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
13968 | Argument may be line number, function name, or \"*\" and an address.\n\ |
13969 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
13970 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
13971 | If an address is specified, breakpoints at that address are cleared.\n\ |
13972 | \n\ | |
13973 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
13974 | is executing in.\n\ |
13975 | \n\ | |
1bedd215 | 13976 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 13977 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 13978 | |
1bedd215 | 13979 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
13980 | Set breakpoint at specified line or function.\n" |
13981 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 13982 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 13983 | |
c906108c SS |
13984 | add_com_alias ("b", "break", class_run, 1); |
13985 | add_com_alias ("br", "break", class_run, 1); | |
13986 | add_com_alias ("bre", "break", class_run, 1); | |
13987 | add_com_alias ("brea", "break", class_run, 1); | |
13988 | ||
7681d515 PM |
13989 | if (xdb_commands) |
13990 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
13991 | |
13992 | if (dbx_commands) | |
13993 | { | |
1bedd215 AC |
13994 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
13995 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
13996 | &stoplist, "stop ", 1, &cmdlist); |
13997 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 13998 | _("Break in function or address."), &stoplist); |
c5aa993b | 13999 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 14000 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
14001 | add_com ("status", class_info, breakpoints_info, _("\ |
14002 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
14003 | The \"Type\" column indicates one of:\n\ |
14004 | \tbreakpoint - normal breakpoint\n\ | |
14005 | \twatchpoint - watchpoint\n\ | |
14006 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
14007 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
14008 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
14009 | address and file/line number respectively.\n\ |
14010 | \n\ | |
14011 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14012 | are set to the address of the last breakpoint listed unless the command\n\ |
14013 | is prefixed with \"server \".\n\n\ | |
c906108c | 14014 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 14015 | breakpoint set.")); |
c906108c SS |
14016 | } |
14017 | ||
1bedd215 | 14018 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 14019 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
14020 | The \"Type\" column indicates one of:\n\ |
14021 | \tbreakpoint - normal breakpoint\n\ | |
14022 | \twatchpoint - watchpoint\n\ | |
14023 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
14024 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
14025 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
14026 | address and file/line number respectively.\n\ |
14027 | \n\ | |
14028 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14029 | are set to the address of the last breakpoint listed unless the command\n\ |
14030 | is prefixed with \"server \".\n\n\ | |
c906108c | 14031 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 14032 | breakpoint set.")); |
c906108c | 14033 | |
6b04bdb7 MS |
14034 | add_info_alias ("b", "breakpoints", 1); |
14035 | ||
c906108c | 14036 | if (xdb_commands) |
1bedd215 AC |
14037 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
14038 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
14039 | The \"Type\" column indicates one of:\n\ |
14040 | \tbreakpoint - normal breakpoint\n\ | |
14041 | \twatchpoint - watchpoint\n\ | |
14042 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
14043 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
14044 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
14045 | address and file/line number respectively.\n\ |
14046 | \n\ | |
14047 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14048 | are set to the address of the last breakpoint listed unless the command\n\ |
14049 | is prefixed with \"server \".\n\n\ | |
c906108c | 14050 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 14051 | breakpoint set.")); |
c906108c | 14052 | |
1a966eab AC |
14053 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
14054 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
14055 | The \"Type\" column indicates one of:\n\ |
14056 | \tbreakpoint - normal breakpoint\n\ | |
14057 | \twatchpoint - watchpoint\n\ | |
14058 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
14059 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
14060 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
14061 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
14062 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
14063 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
14064 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
14065 | address and file/line number respectively.\n\ |
14066 | \n\ | |
14067 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
14068 | are set to the address of the last breakpoint listed unless the command\n\ |
14069 | is prefixed with \"server \".\n\n\ | |
c906108c | 14070 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 14071 | breakpoint set."), |
c906108c SS |
14072 | &maintenanceinfolist); |
14073 | ||
44feb3ce TT |
14074 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
14075 | Set catchpoints to catch events."), | |
14076 | &catch_cmdlist, "catch ", | |
14077 | 0/*allow-unknown*/, &cmdlist); | |
14078 | ||
14079 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
14080 | Set temporary catchpoints to catch events."), | |
14081 | &tcatch_cmdlist, "tcatch ", | |
14082 | 0/*allow-unknown*/, &cmdlist); | |
14083 | ||
14084 | /* Add catch and tcatch sub-commands. */ | |
14085 | add_catch_command ("catch", _("\ | |
88e7d25d | 14086 | Catch an exception, when caught."), |
44feb3ce | 14087 | catch_catch_command, |
a96d9b2e | 14088 | NULL, |
44feb3ce TT |
14089 | CATCH_PERMANENT, |
14090 | CATCH_TEMPORARY); | |
14091 | add_catch_command ("throw", _("\ | |
88e7d25d | 14092 | Catch an exception, when thrown."), |
44feb3ce | 14093 | catch_throw_command, |
a96d9b2e | 14094 | NULL, |
44feb3ce TT |
14095 | CATCH_PERMANENT, |
14096 | CATCH_TEMPORARY); | |
14097 | add_catch_command ("fork", _("Catch calls to fork."), | |
14098 | catch_fork_command_1, | |
a96d9b2e | 14099 | NULL, |
44feb3ce TT |
14100 | (void *) (uintptr_t) catch_fork_permanent, |
14101 | (void *) (uintptr_t) catch_fork_temporary); | |
14102 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
14103 | catch_fork_command_1, | |
a96d9b2e | 14104 | NULL, |
44feb3ce TT |
14105 | (void *) (uintptr_t) catch_vfork_permanent, |
14106 | (void *) (uintptr_t) catch_vfork_temporary); | |
14107 | add_catch_command ("exec", _("Catch calls to exec."), | |
14108 | catch_exec_command_1, | |
a96d9b2e SDJ |
14109 | NULL, |
14110 | CATCH_PERMANENT, | |
14111 | CATCH_TEMPORARY); | |
14112 | add_catch_command ("syscall", _("\ | |
14113 | Catch system calls by their names and/or numbers.\n\ | |
14114 | Arguments say which system calls to catch. If no arguments\n\ | |
14115 | are given, every system call will be caught.\n\ | |
14116 | Arguments, if given, should be one or more system call names\n\ | |
14117 | (if your system supports that), or system call numbers."), | |
14118 | catch_syscall_command_1, | |
14119 | catch_syscall_completer, | |
44feb3ce TT |
14120 | CATCH_PERMANENT, |
14121 | CATCH_TEMPORARY); | |
c5aa993b | 14122 | |
1bedd215 AC |
14123 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
14124 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 14125 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 14126 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
14127 | an expression changes.\n\ |
14128 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
14129 | the memory to which it refers.")); | |
65d12d83 | 14130 | set_cmd_completer (c, expression_completer); |
c906108c | 14131 | |
1bedd215 AC |
14132 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
14133 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 14134 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 14135 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
14136 | an expression is read.\n\ |
14137 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
14138 | the memory to which it refers.")); | |
65d12d83 | 14139 | set_cmd_completer (c, expression_completer); |
c906108c | 14140 | |
1bedd215 AC |
14141 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
14142 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 14143 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 14144 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
14145 | an expression is either read or written.\n\ |
14146 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
14147 | the memory to which it refers.")); | |
65d12d83 | 14148 | set_cmd_completer (c, expression_completer); |
c906108c | 14149 | |
d77f58be | 14150 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 14151 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 14152 | |
920d2a44 AC |
14153 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
14154 | respond to changes - contrary to the description. */ | |
85c07804 AC |
14155 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
14156 | &can_use_hw_watchpoints, _("\ | |
14157 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
14158 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
14159 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
14160 | such is available. (However, any hardware watchpoints that were\n\ | |
14161 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
14162 | hardware.)"), |
14163 | NULL, | |
920d2a44 | 14164 | show_can_use_hw_watchpoints, |
85c07804 | 14165 | &setlist, &showlist); |
c906108c SS |
14166 | |
14167 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 14168 | |
1042e4c0 SS |
14169 | /* Tracepoint manipulation commands. */ |
14170 | ||
14171 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
14172 | Set a tracepoint at specified line or function.\n\ | |
14173 | \n" | |
14174 | BREAK_ARGS_HELP ("trace") "\n\ | |
14175 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14176 | set_cmd_completer (c, location_completer); | |
14177 | ||
14178 | add_com_alias ("tp", "trace", class_alias, 0); | |
14179 | add_com_alias ("tr", "trace", class_alias, 1); | |
14180 | add_com_alias ("tra", "trace", class_alias, 1); | |
14181 | add_com_alias ("trac", "trace", class_alias, 1); | |
14182 | ||
7a697b8d SS |
14183 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
14184 | Set a fast tracepoint at specified line or function.\n\ | |
14185 | \n" | |
14186 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
14187 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14188 | set_cmd_completer (c, location_completer); | |
14189 | ||
0fb4aa4b PA |
14190 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
14191 | Set a static tracepoint at specified line, function or marker.\n\ | |
14192 | \n\ | |
14193 | strace [LOCATION] [if CONDITION]\n\ | |
14194 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
14195 | or -m MARKER_ID.\n\ | |
14196 | If a line number is specified, probe the marker at start of code\n\ | |
14197 | for that line. If a function is specified, probe the marker at start\n\ | |
14198 | of code for that function. If an address is specified, probe the marker\n\ | |
14199 | at that exact address. If a marker id is specified, probe the marker\n\ | |
14200 | with that name. With no LOCATION, uses current execution address of\n\ | |
14201 | the selected stack frame.\n\ | |
14202 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
14203 | This collects arbitrary user data passed in the probe point call to the\n\ | |
14204 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
14205 | by printing the $_sdata variable like any other convenience variable.\n\ | |
14206 | \n\ | |
14207 | CONDITION is a boolean expression.\n\ | |
14208 | \n\ | |
d41c0fc8 PA |
14209 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
14210 | conditions are different.\n\ | |
0fb4aa4b PA |
14211 | \n\ |
14212 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
14213 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
14214 | set_cmd_completer (c, location_completer); | |
14215 | ||
1042e4c0 | 14216 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 14217 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
14218 | Convenience variable \"$tpnum\" contains the number of the\n\ |
14219 | last tracepoint set.")); | |
14220 | ||
14221 | add_info_alias ("tp", "tracepoints", 1); | |
14222 | ||
14223 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
14224 | Delete specified tracepoints.\n\ | |
14225 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14226 | No argument means delete all tracepoints."), | |
14227 | &deletelist); | |
14228 | ||
14229 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
14230 | Disable specified tracepoints.\n\ | |
14231 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14232 | No argument means disable all tracepoints."), | |
14233 | &disablelist); | |
14234 | deprecate_cmd (c, "disable"); | |
14235 | ||
14236 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
14237 | Enable specified tracepoints.\n\ | |
14238 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
14239 | No argument means enable all tracepoints."), | |
14240 | &enablelist); | |
14241 | deprecate_cmd (c, "enable"); | |
14242 | ||
14243 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
14244 | Set the passcount for a tracepoint.\n\ | |
14245 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
14246 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
14247 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
14248 | ||
6149aea9 PA |
14249 | add_prefix_cmd ("save", class_breakpoint, save_command, |
14250 | _("Save breakpoint definitions as a script."), | |
14251 | &save_cmdlist, "save ", | |
14252 | 0/*allow-unknown*/, &cmdlist); | |
14253 | ||
14254 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
14255 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 14256 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
14257 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
14258 | session to restore them."), | |
14259 | &save_cmdlist); | |
14260 | set_cmd_completer (c, filename_completer); | |
14261 | ||
14262 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 14263 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
14264 | Use the 'source' command in another debug session to restore them."), |
14265 | &save_cmdlist); | |
1042e4c0 SS |
14266 | set_cmd_completer (c, filename_completer); |
14267 | ||
6149aea9 PA |
14268 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
14269 | deprecate_cmd (c, "save tracepoints"); | |
14270 | ||
1bedd215 | 14271 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
14272 | Breakpoint specific settings\n\ |
14273 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 14274 | pending breakpoint behavior"), |
fa8d40ab JJ |
14275 | &breakpoint_set_cmdlist, "set breakpoint ", |
14276 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 14277 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
14278 | Breakpoint specific settings\n\ |
14279 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 14280 | pending breakpoint behavior"), |
fa8d40ab JJ |
14281 | &breakpoint_show_cmdlist, "show breakpoint ", |
14282 | 0/*allow-unknown*/, &showlist); | |
14283 | ||
7915a72c AC |
14284 | add_setshow_auto_boolean_cmd ("pending", no_class, |
14285 | &pending_break_support, _("\ | |
14286 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
14287 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
14288 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
14289 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
14290 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 14291 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 14292 | NULL, |
920d2a44 | 14293 | show_pending_break_support, |
6e1d7d6c AC |
14294 | &breakpoint_set_cmdlist, |
14295 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
14296 | |
14297 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
14298 | |
14299 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
14300 | &automatic_hardware_breakpoints, _("\ | |
14301 | Set automatic usage of hardware breakpoints."), _("\ | |
14302 | Show automatic usage of hardware breakpoints."), _("\ | |
14303 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
14304 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
14305 | a warning will be emitted for such breakpoints."), | |
14306 | NULL, | |
14307 | show_automatic_hardware_breakpoints, | |
14308 | &breakpoint_set_cmdlist, | |
14309 | &breakpoint_show_cmdlist); | |
74960c60 | 14310 | |
33e5cbd6 PA |
14311 | add_setshow_enum_cmd ("always-inserted", class_support, |
14312 | always_inserted_enums, &always_inserted_mode, _("\ | |
74960c60 VP |
14313 | Set mode for inserting breakpoints."), _("\ |
14314 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
14315 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
14316 | resumed, and removed when execution stops. When this mode is on,\n\ | |
14317 | breakpoints are inserted immediately and removed only when the user\n\ | |
14318 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
14319 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
14320 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
14321 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
14322 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
74960c60 VP |
14323 | NULL, |
14324 | &show_always_inserted_mode, | |
14325 | &breakpoint_set_cmdlist, | |
14326 | &breakpoint_show_cmdlist); | |
f1310107 TJB |
14327 | |
14328 | add_com ("break-range", class_breakpoint, break_range_command, _("\ | |
14329 | Set a breakpoint for an address range.\n\ | |
14330 | break-range START-LOCATION, END-LOCATION\n\ | |
14331 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
14332 | LINENUM, for that line in the current file,\n\ | |
14333 | FILE:LINENUM, for that line in that file,\n\ | |
14334 | +OFFSET, for that number of lines after the current line\n\ | |
14335 | or the start of the range\n\ | |
14336 | FUNCTION, for the first line in that function,\n\ | |
14337 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
14338 | *ADDRESS, for the instruction at that address.\n\ | |
14339 | \n\ | |
14340 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
14341 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
14342 | range (including START-LOCATION and END-LOCATION).")); | |
14343 | ||
765dc015 | 14344 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
14345 | |
14346 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 14347 | } |