Commit | Line | Data |
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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
ecd75fc8 | 3 | Copyright (C) 1986-2014 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" | |
45741a9c | 35 | #include "infrun.h" |
c906108c SS |
36 | #include "gdbthread.h" |
37 | #include "target.h" | |
38 | #include "language.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" |
fe898f56 | 50 | #include "block.h" |
a77053c2 | 51 | #include "solib.h" |
84acb35a JJ |
52 | #include "solist.h" |
53 | #include "observer.h" | |
60250e8b | 54 | #include "exceptions.h" |
765dc015 | 55 | #include "memattr.h" |
f7f9143b | 56 | #include "ada-lang.h" |
d1aa2f50 | 57 | #include "top.h" |
79a45b7d | 58 | #include "valprint.h" |
4efc6507 | 59 | #include "jit.h" |
a96d9b2e | 60 | #include "xml-syscall.h" |
65d79d4b | 61 | #include "parser-defs.h" |
55aa24fb SDJ |
62 | #include "gdb_regex.h" |
63 | #include "probe.h" | |
e9cafbcc | 64 | #include "cli/cli-utils.h" |
be34f849 | 65 | #include "continuations.h" |
1bfeeb0f JL |
66 | #include "stack.h" |
67 | #include "skip.h" | |
b775012e | 68 | #include "ax-gdb.h" |
e2e4d78b | 69 | #include "dummy-frame.h" |
c906108c | 70 | |
d3ce09f5 SS |
71 | #include "format.h" |
72 | ||
1042e4c0 SS |
73 | /* readline include files */ |
74 | #include "readline/readline.h" | |
75 | #include "readline/history.h" | |
76 | ||
77 | /* readline defines this. */ | |
78 | #undef savestring | |
79 | ||
034dad6f | 80 | #include "mi/mi-common.h" |
6dddc817 | 81 | #include "extension.h" |
104c1213 | 82 | |
e7e8980f YQ |
83 | /* Enums for exception-handling support. */ |
84 | enum exception_event_kind | |
85 | { | |
86 | EX_EVENT_THROW, | |
591f19e8 | 87 | EX_EVENT_RETHROW, |
e7e8980f YQ |
88 | EX_EVENT_CATCH |
89 | }; | |
90 | ||
4a64f543 | 91 | /* Prototypes for local functions. */ |
c906108c | 92 | |
a14ed312 | 93 | static void enable_delete_command (char *, int); |
c906108c | 94 | |
a14ed312 | 95 | static void enable_once_command (char *, int); |
c906108c | 96 | |
816338b5 SS |
97 | static void enable_count_command (char *, int); |
98 | ||
a14ed312 | 99 | static void disable_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static void enable_command (char *, int); |
c906108c | 102 | |
95a42b64 TT |
103 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
104 | void *), | |
105 | void *); | |
c906108c | 106 | |
a14ed312 | 107 | static void ignore_command (char *, int); |
c906108c | 108 | |
4efb68b1 | 109 | static int breakpoint_re_set_one (void *); |
c906108c | 110 | |
348d480f PA |
111 | static void breakpoint_re_set_default (struct breakpoint *); |
112 | ||
983af33b SDJ |
113 | static void create_sals_from_address_default (char **, |
114 | struct linespec_result *, | |
115 | enum bptype, char *, | |
116 | char **); | |
117 | ||
118 | static void create_breakpoints_sal_default (struct gdbarch *, | |
119 | struct linespec_result *, | |
e7e0cddf | 120 | char *, char *, enum bptype, |
983af33b SDJ |
121 | enum bpdisp, int, int, |
122 | int, | |
123 | const struct breakpoint_ops *, | |
44f238bb | 124 | int, int, int, unsigned); |
983af33b SDJ |
125 | |
126 | static void decode_linespec_default (struct breakpoint *, char **, | |
127 | struct symtabs_and_lines *); | |
128 | ||
a14ed312 | 129 | static void clear_command (char *, int); |
c906108c | 130 | |
a14ed312 | 131 | static void catch_command (char *, int); |
c906108c | 132 | |
a9634178 | 133 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 134 | |
98deb0da | 135 | static void break_command_1 (char *, int, int); |
c906108c | 136 | |
a14ed312 | 137 | static void mention (struct breakpoint *); |
c906108c | 138 | |
348d480f PA |
139 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
140 | enum bptype, | |
c0a91b2b | 141 | const struct breakpoint_ops *); |
3742cc8b YQ |
142 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
143 | const struct symtab_and_line *); | |
144 | ||
4a64f543 MS |
145 | /* This function is used in gdbtk sources and thus can not be made |
146 | static. */ | |
63c252f8 | 147 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 148 | struct symtab_and_line, |
c0a91b2b TT |
149 | enum bptype, |
150 | const struct breakpoint_ops *); | |
c906108c | 151 | |
06edf0c0 PA |
152 | static struct breakpoint * |
153 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
154 | enum bptype type, | |
a1aa2221 LM |
155 | const struct breakpoint_ops *ops, |
156 | int loc_enabled); | |
06edf0c0 | 157 | |
76897487 KB |
158 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
159 | ||
a6d9a66e UW |
160 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
161 | CORE_ADDR bpaddr, | |
88f7da05 | 162 | enum bptype bptype); |
76897487 | 163 | |
6c95b8df PA |
164 | static void describe_other_breakpoints (struct gdbarch *, |
165 | struct program_space *, CORE_ADDR, | |
5af949e3 | 166 | struct obj_section *, int); |
c906108c | 167 | |
85d721b8 PA |
168 | static int watchpoint_locations_match (struct bp_location *loc1, |
169 | struct bp_location *loc2); | |
170 | ||
f1310107 TJB |
171 | static int breakpoint_location_address_match (struct bp_location *bl, |
172 | struct address_space *aspace, | |
173 | CORE_ADDR addr); | |
174 | ||
a14ed312 | 175 | static void breakpoints_info (char *, int); |
c906108c | 176 | |
d77f58be SS |
177 | static void watchpoints_info (char *, int); |
178 | ||
e5a67952 MS |
179 | static int breakpoint_1 (char *, int, |
180 | int (*) (const struct breakpoint *)); | |
c906108c | 181 | |
4efb68b1 | 182 | static int breakpoint_cond_eval (void *); |
c906108c | 183 | |
4efb68b1 | 184 | static void cleanup_executing_breakpoints (void *); |
c906108c | 185 | |
a14ed312 | 186 | static void commands_command (char *, int); |
c906108c | 187 | |
a14ed312 | 188 | static void condition_command (char *, int); |
c906108c | 189 | |
c5aa993b JM |
190 | typedef enum |
191 | { | |
192 | mark_inserted, | |
193 | mark_uninserted | |
194 | } | |
195 | insertion_state_t; | |
c906108c | 196 | |
0bde7532 | 197 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 198 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 199 | |
e514a9d6 | 200 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 201 | |
4efb68b1 | 202 | static int watchpoint_check (void *); |
c906108c | 203 | |
a14ed312 | 204 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 205 | |
a14ed312 | 206 | static int hw_breakpoint_used_count (void); |
c906108c | 207 | |
a1398e0c PA |
208 | static int hw_watchpoint_use_count (struct breakpoint *); |
209 | ||
210 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
211 | enum bptype type, | |
212 | int *other_type_used); | |
c906108c | 213 | |
a14ed312 | 214 | static void hbreak_command (char *, int); |
c906108c | 215 | |
a14ed312 | 216 | static void thbreak_command (char *, int); |
c906108c | 217 | |
816338b5 SS |
218 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
219 | int count); | |
c906108c | 220 | |
a14ed312 | 221 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 222 | |
a14ed312 | 223 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 224 | |
a14ed312 | 225 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 226 | |
a14ed312 | 227 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 228 | |
d03285ec UW |
229 | static void detach_single_step_breakpoints (void); |
230 | ||
ef370185 JB |
231 | static int find_single_step_breakpoint (struct address_space *aspace, |
232 | CORE_ADDR pc); | |
233 | ||
fe3f5fa8 | 234 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
235 | static void incref_bp_location (struct bp_location *loc); |
236 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 237 | |
39d61571 | 238 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 239 | |
44702360 PA |
240 | /* update_global_location_list's modes of operation wrt to whether to |
241 | insert locations now. */ | |
242 | enum ugll_insert_mode | |
243 | { | |
244 | /* Don't insert any breakpoint locations into the inferior, only | |
245 | remove already-inserted locations that no longer should be | |
246 | inserted. Functions that delete a breakpoint or breakpoints | |
247 | should specify this mode, so that deleting a breakpoint doesn't | |
248 | have the side effect of inserting the locations of other | |
249 | breakpoints that are marked not-inserted, but should_be_inserted | |
250 | returns true on them. | |
251 | ||
252 | This behavior is useful is situations close to tear-down -- e.g., | |
253 | after an exec, while the target still has execution, but | |
254 | breakpoint shadows of the previous executable image should *NOT* | |
255 | be restored to the new image; or before detaching, where the | |
256 | target still has execution and wants to delete breakpoints from | |
257 | GDB's lists, and all breakpoints had already been removed from | |
258 | the inferior. */ | |
259 | UGLL_DONT_INSERT, | |
260 | ||
a25a5a45 PA |
261 | /* May insert breakpoints iff breakpoints_should_be_inserted_now |
262 | claims breakpoints should be inserted now. */ | |
04086b45 PA |
263 | UGLL_MAY_INSERT, |
264 | ||
a25a5a45 PA |
265 | /* Insert locations now, irrespective of |
266 | breakpoints_should_be_inserted_now. E.g., say all threads are | |
267 | stopped right now, and the user did "continue". We need to | |
268 | insert breakpoints _before_ resuming the target, but | |
269 | UGLL_MAY_INSERT wouldn't insert them, because | |
270 | breakpoints_should_be_inserted_now returns false at that point, | |
271 | as no thread is running yet. */ | |
04086b45 | 272 | UGLL_INSERT |
44702360 PA |
273 | }; |
274 | ||
275 | static void update_global_location_list (enum ugll_insert_mode); | |
a5606eee | 276 | |
44702360 | 277 | static void update_global_location_list_nothrow (enum ugll_insert_mode); |
74960c60 | 278 | |
d77f58be | 279 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
280 | |
281 | static void insert_breakpoint_locations (void); | |
a5606eee | 282 | |
a96d9b2e SDJ |
283 | static int syscall_catchpoint_p (struct breakpoint *b); |
284 | ||
1042e4c0 SS |
285 | static void tracepoints_info (char *, int); |
286 | ||
287 | static void delete_trace_command (char *, int); | |
288 | ||
289 | static void enable_trace_command (char *, int); | |
290 | ||
291 | static void disable_trace_command (char *, int); | |
292 | ||
293 | static void trace_pass_command (char *, int); | |
294 | ||
558a9d82 YQ |
295 | static void set_tracepoint_count (int num); |
296 | ||
9c06b0b4 TJB |
297 | static int is_masked_watchpoint (const struct breakpoint *b); |
298 | ||
b775012e LM |
299 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
300 | ||
983af33b SDJ |
301 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
302 | otherwise. */ | |
303 | ||
304 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 305 | |
2060206e PA |
306 | /* The abstract base class all breakpoint_ops structures inherit |
307 | from. */ | |
ab04a2af | 308 | struct breakpoint_ops base_breakpoint_ops; |
2060206e PA |
309 | |
310 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
311 | that are implemented on top of software or hardware breakpoints | |
312 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
313 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
314 | ||
315 | /* Internal breakpoints class type. */ | |
06edf0c0 | 316 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
317 | |
318 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
319 | static struct breakpoint_ops momentary_breakpoint_ops; |
320 | ||
e2e4d78b JK |
321 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
322 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
323 | ||
2060206e PA |
324 | /* The breakpoint_ops structure to be used in regular user created |
325 | breakpoints. */ | |
326 | struct breakpoint_ops bkpt_breakpoint_ops; | |
327 | ||
55aa24fb SDJ |
328 | /* Breakpoints set on probes. */ |
329 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
330 | ||
e7e0cddf | 331 | /* Dynamic printf class type. */ |
c5867ab6 | 332 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 333 | |
9d497a19 PA |
334 | /* One (or perhaps two) breakpoints used for software single |
335 | stepping. */ | |
336 | ||
337 | static void *single_step_breakpoints[2]; | |
338 | static struct gdbarch *single_step_gdbarch[2]; | |
339 | ||
d3ce09f5 SS |
340 | /* The style in which to perform a dynamic printf. This is a user |
341 | option because different output options have different tradeoffs; | |
342 | if GDB does the printing, there is better error handling if there | |
343 | is a problem with any of the arguments, but using an inferior | |
344 | function lets you have special-purpose printers and sending of | |
345 | output to the same place as compiled-in print functions. */ | |
346 | ||
347 | static const char dprintf_style_gdb[] = "gdb"; | |
348 | static const char dprintf_style_call[] = "call"; | |
349 | static const char dprintf_style_agent[] = "agent"; | |
350 | static const char *const dprintf_style_enums[] = { | |
351 | dprintf_style_gdb, | |
352 | dprintf_style_call, | |
353 | dprintf_style_agent, | |
354 | NULL | |
355 | }; | |
356 | static const char *dprintf_style = dprintf_style_gdb; | |
357 | ||
358 | /* The function to use for dynamic printf if the preferred style is to | |
359 | call into the inferior. The value is simply a string that is | |
360 | copied into the command, so it can be anything that GDB can | |
361 | evaluate to a callable address, not necessarily a function name. */ | |
362 | ||
363 | static char *dprintf_function = ""; | |
364 | ||
365 | /* The channel to use for dynamic printf if the preferred style is to | |
366 | call into the inferior; if a nonempty string, it will be passed to | |
367 | the call as the first argument, with the format string as the | |
368 | second. As with the dprintf function, this can be anything that | |
369 | GDB knows how to evaluate, so in addition to common choices like | |
370 | "stderr", this could be an app-specific expression like | |
371 | "mystreams[curlogger]". */ | |
372 | ||
373 | static char *dprintf_channel = ""; | |
374 | ||
375 | /* True if dprintf commands should continue to operate even if GDB | |
376 | has disconnected. */ | |
377 | static int disconnected_dprintf = 1; | |
378 | ||
5cea2a26 PA |
379 | /* A reference-counted struct command_line. This lets multiple |
380 | breakpoints share a single command list. */ | |
381 | struct counted_command_line | |
382 | { | |
383 | /* The reference count. */ | |
384 | int refc; | |
385 | ||
386 | /* The command list. */ | |
387 | struct command_line *commands; | |
388 | }; | |
389 | ||
390 | struct command_line * | |
391 | breakpoint_commands (struct breakpoint *b) | |
392 | { | |
393 | return b->commands ? b->commands->commands : NULL; | |
394 | } | |
3daf8fe5 | 395 | |
f3b1572e PA |
396 | /* Flag indicating that a command has proceeded the inferior past the |
397 | current breakpoint. */ | |
398 | ||
399 | static int breakpoint_proceeded; | |
400 | ||
956a9fb9 | 401 | const char * |
2cec12e5 AR |
402 | bpdisp_text (enum bpdisp disp) |
403 | { | |
4a64f543 MS |
404 | /* NOTE: the following values are a part of MI protocol and |
405 | represent values of 'disp' field returned when inferior stops at | |
406 | a breakpoint. */ | |
bc043ef3 | 407 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 408 | |
2cec12e5 AR |
409 | return bpdisps[(int) disp]; |
410 | } | |
c906108c | 411 | |
4a64f543 | 412 | /* Prototypes for exported functions. */ |
c906108c | 413 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 414 | if such is available. */ |
c906108c SS |
415 | static int can_use_hw_watchpoints; |
416 | ||
920d2a44 AC |
417 | static void |
418 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
419 | struct cmd_list_element *c, | |
420 | const char *value) | |
421 | { | |
3e43a32a MS |
422 | fprintf_filtered (file, |
423 | _("Debugger's willingness to use " | |
424 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
425 | value); |
426 | } | |
427 | ||
fa8d40ab JJ |
428 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
429 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 430 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
431 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
432 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
433 | static void |
434 | show_pending_break_support (struct ui_file *file, int from_tty, | |
435 | struct cmd_list_element *c, | |
436 | const char *value) | |
437 | { | |
3e43a32a MS |
438 | fprintf_filtered (file, |
439 | _("Debugger's behavior regarding " | |
440 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
441 | value); |
442 | } | |
fa8d40ab | 443 | |
765dc015 | 444 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 445 | set with "break" but falling in read-only memory. |
765dc015 VP |
446 | If 0, gdb will warn about such breakpoints, but won't automatically |
447 | use hardware breakpoints. */ | |
448 | static int automatic_hardware_breakpoints; | |
449 | static void | |
450 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
451 | struct cmd_list_element *c, | |
452 | const char *value) | |
453 | { | |
3e43a32a MS |
454 | fprintf_filtered (file, |
455 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
456 | value); |
457 | } | |
458 | ||
a25a5a45 PA |
459 | /* If on, GDB keeps breakpoints inserted even if the inferior is |
460 | stopped, and immediately inserts any new breakpoints as soon as | |
461 | they're created. If off (default), GDB keeps breakpoints off of | |
462 | the target as long as possible. That is, it delays inserting | |
463 | breakpoints until the next resume, and removes them again when the | |
464 | target fully stops. This is a bit safer in case GDB crashes while | |
465 | processing user input. */ | |
466 | static int always_inserted_mode = 0; | |
72d0e2c5 | 467 | |
33e5cbd6 | 468 | static void |
74960c60 | 469 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 470 | struct cmd_list_element *c, const char *value) |
74960c60 | 471 | { |
a25a5a45 PA |
472 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
473 | value); | |
74960c60 VP |
474 | } |
475 | ||
b57bacec PA |
476 | /* See breakpoint.h. */ |
477 | ||
33e5cbd6 | 478 | int |
a25a5a45 | 479 | breakpoints_should_be_inserted_now (void) |
33e5cbd6 | 480 | { |
a25a5a45 PA |
481 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
482 | { | |
483 | /* If breakpoints are global, they should be inserted even if no | |
484 | thread under gdb's control is running, or even if there are | |
485 | no threads under GDB's control yet. */ | |
486 | return 1; | |
487 | } | |
488 | else if (target_has_execution) | |
489 | { | |
a25a5a45 PA |
490 | if (always_inserted_mode) |
491 | { | |
492 | /* The user wants breakpoints inserted even if all threads | |
493 | are stopped. */ | |
494 | return 1; | |
495 | } | |
496 | ||
b57bacec PA |
497 | if (threads_are_executing ()) |
498 | return 1; | |
a25a5a45 PA |
499 | } |
500 | return 0; | |
33e5cbd6 | 501 | } |
765dc015 | 502 | |
b775012e LM |
503 | static const char condition_evaluation_both[] = "host or target"; |
504 | ||
505 | /* Modes for breakpoint condition evaluation. */ | |
506 | static const char condition_evaluation_auto[] = "auto"; | |
507 | static const char condition_evaluation_host[] = "host"; | |
508 | static const char condition_evaluation_target[] = "target"; | |
509 | static const char *const condition_evaluation_enums[] = { | |
510 | condition_evaluation_auto, | |
511 | condition_evaluation_host, | |
512 | condition_evaluation_target, | |
513 | NULL | |
514 | }; | |
515 | ||
516 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
517 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
518 | ||
519 | /* Global that we use to display information to the user (gets its value from | |
520 | condition_evaluation_mode_1. */ | |
521 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
522 | ||
523 | /* Translate a condition evaluation mode MODE into either "host" | |
524 | or "target". This is used mostly to translate from "auto" to the | |
525 | real setting that is being used. It returns the translated | |
526 | evaluation mode. */ | |
527 | ||
528 | static const char * | |
529 | translate_condition_evaluation_mode (const char *mode) | |
530 | { | |
531 | if (mode == condition_evaluation_auto) | |
532 | { | |
533 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
534 | return condition_evaluation_target; | |
535 | else | |
536 | return condition_evaluation_host; | |
537 | } | |
538 | else | |
539 | return mode; | |
540 | } | |
541 | ||
542 | /* Discovers what condition_evaluation_auto translates to. */ | |
543 | ||
544 | static const char * | |
545 | breakpoint_condition_evaluation_mode (void) | |
546 | { | |
547 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
548 | } | |
549 | ||
550 | /* Return true if GDB should evaluate breakpoint conditions or false | |
551 | otherwise. */ | |
552 | ||
553 | static int | |
554 | gdb_evaluates_breakpoint_condition_p (void) | |
555 | { | |
556 | const char *mode = breakpoint_condition_evaluation_mode (); | |
557 | ||
558 | return (mode == condition_evaluation_host); | |
559 | } | |
560 | ||
a14ed312 | 561 | void _initialize_breakpoint (void); |
c906108c | 562 | |
c906108c SS |
563 | /* Are we executing breakpoint commands? */ |
564 | static int executing_breakpoint_commands; | |
565 | ||
c02f5703 MS |
566 | /* Are overlay event breakpoints enabled? */ |
567 | static int overlay_events_enabled; | |
568 | ||
e09342b5 TJB |
569 | /* See description in breakpoint.h. */ |
570 | int target_exact_watchpoints = 0; | |
571 | ||
c906108c | 572 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 573 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 574 | current breakpoint. */ |
c906108c | 575 | |
5c44784c | 576 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 577 | |
5c44784c JM |
578 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
579 | for (B = breakpoint_chain; \ | |
580 | B ? (TMP=B->next, 1): 0; \ | |
581 | B = TMP) | |
c906108c | 582 | |
4a64f543 MS |
583 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
584 | not provided so update_global_location_list must not be called | |
585 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 586 | |
876fa593 JK |
587 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
588 | for (BP_TMP = bp_location; \ | |
589 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
590 | BP_TMP++) | |
7cc221ef | 591 | |
b775012e LM |
592 | /* Iterates through locations with address ADDRESS for the currently selected |
593 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
594 | to where the loop should start from. | |
595 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
596 | appropriate location to start with. */ | |
597 | ||
598 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
599 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
600 | BP_LOCP_TMP = BP_LOCP_START; \ | |
601 | BP_LOCP_START \ | |
602 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
603 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
604 | BP_LOCP_TMP++) | |
605 | ||
1042e4c0 SS |
606 | /* Iterator for tracepoints only. */ |
607 | ||
608 | #define ALL_TRACEPOINTS(B) \ | |
609 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 610 | if (is_tracepoint (B)) |
1042e4c0 | 611 | |
7cc221ef | 612 | /* Chains of all breakpoints defined. */ |
c906108c SS |
613 | |
614 | struct breakpoint *breakpoint_chain; | |
615 | ||
876fa593 JK |
616 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
617 | ||
618 | static struct bp_location **bp_location; | |
619 | ||
620 | /* Number of elements of BP_LOCATION. */ | |
621 | ||
622 | static unsigned bp_location_count; | |
623 | ||
4a64f543 MS |
624 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
625 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
626 | result from bp_location_has_shadow. You can use it for roughly | |
627 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
628 | an address you need to read. */ | |
876fa593 JK |
629 | |
630 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
631 | ||
4a64f543 MS |
632 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
633 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
634 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
635 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
636 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
637 | |
638 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 639 | |
4a64f543 MS |
640 | /* The locations that no longer correspond to any breakpoint, unlinked |
641 | from bp_location array, but for which a hit may still be reported | |
642 | by a target. */ | |
20874c92 VP |
643 | VEC(bp_location_p) *moribund_locations = NULL; |
644 | ||
c906108c SS |
645 | /* Number of last breakpoint made. */ |
646 | ||
95a42b64 TT |
647 | static int breakpoint_count; |
648 | ||
86b17b60 PA |
649 | /* The value of `breakpoint_count' before the last command that |
650 | created breakpoints. If the last (break-like) command created more | |
651 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
652 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
653 | static int prev_breakpoint_count; | |
c906108c | 654 | |
1042e4c0 SS |
655 | /* Number of last tracepoint made. */ |
656 | ||
95a42b64 | 657 | static int tracepoint_count; |
1042e4c0 | 658 | |
6149aea9 PA |
659 | static struct cmd_list_element *breakpoint_set_cmdlist; |
660 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 661 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 662 | |
468d015d JJ |
663 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
664 | static int | |
665 | breakpoint_enabled (struct breakpoint *b) | |
666 | { | |
0d381245 | 667 | return (b->enable_state == bp_enabled); |
468d015d JJ |
668 | } |
669 | ||
c906108c SS |
670 | /* Set breakpoint count to NUM. */ |
671 | ||
95a42b64 | 672 | static void |
fba45db2 | 673 | set_breakpoint_count (int num) |
c906108c | 674 | { |
86b17b60 | 675 | prev_breakpoint_count = breakpoint_count; |
c906108c | 676 | breakpoint_count = num; |
4fa62494 | 677 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
678 | } |
679 | ||
86b17b60 PA |
680 | /* Used by `start_rbreak_breakpoints' below, to record the current |
681 | breakpoint count before "rbreak" creates any breakpoint. */ | |
682 | static int rbreak_start_breakpoint_count; | |
683 | ||
95a42b64 TT |
684 | /* Called at the start an "rbreak" command to record the first |
685 | breakpoint made. */ | |
86b17b60 | 686 | |
95a42b64 TT |
687 | void |
688 | start_rbreak_breakpoints (void) | |
689 | { | |
86b17b60 | 690 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
691 | } |
692 | ||
693 | /* Called at the end of an "rbreak" command to record the last | |
694 | breakpoint made. */ | |
86b17b60 | 695 | |
95a42b64 TT |
696 | void |
697 | end_rbreak_breakpoints (void) | |
698 | { | |
86b17b60 | 699 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
700 | } |
701 | ||
4a64f543 | 702 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
703 | |
704 | void | |
fba45db2 | 705 | clear_breakpoint_hit_counts (void) |
c906108c SS |
706 | { |
707 | struct breakpoint *b; | |
708 | ||
709 | ALL_BREAKPOINTS (b) | |
710 | b->hit_count = 0; | |
711 | } | |
712 | ||
9add0f1b TT |
713 | /* Allocate a new counted_command_line with reference count of 1. |
714 | The new structure owns COMMANDS. */ | |
715 | ||
716 | static struct counted_command_line * | |
717 | alloc_counted_command_line (struct command_line *commands) | |
718 | { | |
719 | struct counted_command_line *result | |
720 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 721 | |
9add0f1b TT |
722 | result->refc = 1; |
723 | result->commands = commands; | |
724 | return result; | |
725 | } | |
726 | ||
727 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
728 | ||
729 | static void | |
730 | incref_counted_command_line (struct counted_command_line *cmd) | |
731 | { | |
732 | if (cmd) | |
733 | ++cmd->refc; | |
734 | } | |
735 | ||
736 | /* Decrement reference count. If the reference count reaches 0, | |
737 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
738 | nothing if *CMDP is NULL. */ | |
739 | ||
740 | static void | |
741 | decref_counted_command_line (struct counted_command_line **cmdp) | |
742 | { | |
743 | if (*cmdp) | |
744 | { | |
745 | if (--(*cmdp)->refc == 0) | |
746 | { | |
747 | free_command_lines (&(*cmdp)->commands); | |
748 | xfree (*cmdp); | |
749 | } | |
750 | *cmdp = NULL; | |
751 | } | |
752 | } | |
753 | ||
754 | /* A cleanup function that calls decref_counted_command_line. */ | |
755 | ||
756 | static void | |
757 | do_cleanup_counted_command_line (void *arg) | |
758 | { | |
759 | decref_counted_command_line (arg); | |
760 | } | |
761 | ||
762 | /* Create a cleanup that calls decref_counted_command_line on the | |
763 | argument. */ | |
764 | ||
765 | static struct cleanup * | |
766 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
767 | { | |
768 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
769 | } | |
770 | ||
c906108c | 771 | \f |
48cb2d85 VP |
772 | /* Return the breakpoint with the specified number, or NULL |
773 | if the number does not refer to an existing breakpoint. */ | |
774 | ||
775 | struct breakpoint * | |
776 | get_breakpoint (int num) | |
777 | { | |
778 | struct breakpoint *b; | |
779 | ||
780 | ALL_BREAKPOINTS (b) | |
781 | if (b->number == num) | |
782 | return b; | |
783 | ||
784 | return NULL; | |
785 | } | |
5c44784c | 786 | |
c906108c | 787 | \f |
adc36818 | 788 | |
b775012e LM |
789 | /* Mark locations as "conditions have changed" in case the target supports |
790 | evaluating conditions on its side. */ | |
791 | ||
792 | static void | |
793 | mark_breakpoint_modified (struct breakpoint *b) | |
794 | { | |
795 | struct bp_location *loc; | |
796 | ||
797 | /* This is only meaningful if the target is | |
798 | evaluating conditions and if the user has | |
799 | opted for condition evaluation on the target's | |
800 | side. */ | |
801 | if (gdb_evaluates_breakpoint_condition_p () | |
802 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
803 | return; | |
804 | ||
805 | if (!is_breakpoint (b)) | |
806 | return; | |
807 | ||
808 | for (loc = b->loc; loc; loc = loc->next) | |
809 | loc->condition_changed = condition_modified; | |
810 | } | |
811 | ||
812 | /* Mark location as "conditions have changed" in case the target supports | |
813 | evaluating conditions on its side. */ | |
814 | ||
815 | static void | |
816 | mark_breakpoint_location_modified (struct bp_location *loc) | |
817 | { | |
818 | /* This is only meaningful if the target is | |
819 | evaluating conditions and if the user has | |
820 | opted for condition evaluation on the target's | |
821 | side. */ | |
822 | if (gdb_evaluates_breakpoint_condition_p () | |
823 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
824 | ||
825 | return; | |
826 | ||
827 | if (!is_breakpoint (loc->owner)) | |
828 | return; | |
829 | ||
830 | loc->condition_changed = condition_modified; | |
831 | } | |
832 | ||
833 | /* Sets the condition-evaluation mode using the static global | |
834 | condition_evaluation_mode. */ | |
835 | ||
836 | static void | |
837 | set_condition_evaluation_mode (char *args, int from_tty, | |
838 | struct cmd_list_element *c) | |
839 | { | |
b775012e LM |
840 | const char *old_mode, *new_mode; |
841 | ||
842 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
843 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
844 | { | |
845 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
846 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
847 | "Using host evaluation mode instead.")); | |
848 | return; | |
849 | } | |
850 | ||
851 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
852 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
853 | ||
abf1152a JK |
854 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
855 | settings was "auto". */ | |
856 | condition_evaluation_mode = condition_evaluation_mode_1; | |
857 | ||
b775012e LM |
858 | /* Only update the mode if the user picked a different one. */ |
859 | if (new_mode != old_mode) | |
860 | { | |
861 | struct bp_location *loc, **loc_tmp; | |
862 | /* If the user switched to a different evaluation mode, we | |
863 | need to synch the changes with the target as follows: | |
864 | ||
865 | "host" -> "target": Send all (valid) conditions to the target. | |
866 | "target" -> "host": Remove all the conditions from the target. | |
867 | */ | |
868 | ||
b775012e LM |
869 | if (new_mode == condition_evaluation_target) |
870 | { | |
871 | /* Mark everything modified and synch conditions with the | |
872 | target. */ | |
873 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
874 | mark_breakpoint_location_modified (loc); | |
875 | } | |
876 | else | |
877 | { | |
878 | /* Manually mark non-duplicate locations to synch conditions | |
879 | with the target. We do this to remove all the conditions the | |
880 | target knows about. */ | |
881 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
882 | if (is_breakpoint (loc->owner) && loc->inserted) | |
883 | loc->needs_update = 1; | |
884 | } | |
885 | ||
886 | /* Do the update. */ | |
44702360 | 887 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e LM |
888 | } |
889 | ||
890 | return; | |
891 | } | |
892 | ||
893 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
894 | what "auto" is translating to. */ | |
895 | ||
896 | static void | |
897 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
898 | struct cmd_list_element *c, const char *value) | |
899 | { | |
900 | if (condition_evaluation_mode == condition_evaluation_auto) | |
901 | fprintf_filtered (file, | |
902 | _("Breakpoint condition evaluation " | |
903 | "mode is %s (currently %s).\n"), | |
904 | value, | |
905 | breakpoint_condition_evaluation_mode ()); | |
906 | else | |
907 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
908 | value); | |
909 | } | |
910 | ||
911 | /* A comparison function for bp_location AP and BP that is used by | |
912 | bsearch. This comparison function only cares about addresses, unlike | |
913 | the more general bp_location_compare function. */ | |
914 | ||
915 | static int | |
916 | bp_location_compare_addrs (const void *ap, const void *bp) | |
917 | { | |
918 | struct bp_location *a = *(void **) ap; | |
919 | struct bp_location *b = *(void **) bp; | |
920 | ||
921 | if (a->address == b->address) | |
922 | return 0; | |
923 | else | |
924 | return ((a->address > b->address) - (a->address < b->address)); | |
925 | } | |
926 | ||
927 | /* Helper function to skip all bp_locations with addresses | |
928 | less than ADDRESS. It returns the first bp_location that | |
929 | is greater than or equal to ADDRESS. If none is found, just | |
930 | return NULL. */ | |
931 | ||
932 | static struct bp_location ** | |
933 | get_first_locp_gte_addr (CORE_ADDR address) | |
934 | { | |
935 | struct bp_location dummy_loc; | |
936 | struct bp_location *dummy_locp = &dummy_loc; | |
937 | struct bp_location **locp_found = NULL; | |
938 | ||
939 | /* Initialize the dummy location's address field. */ | |
940 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
941 | dummy_loc.address = address; | |
942 | ||
943 | /* Find a close match to the first location at ADDRESS. */ | |
944 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
945 | sizeof (struct bp_location **), | |
946 | bp_location_compare_addrs); | |
947 | ||
948 | /* Nothing was found, nothing left to do. */ | |
949 | if (locp_found == NULL) | |
950 | return NULL; | |
951 | ||
952 | /* We may have found a location that is at ADDRESS but is not the first in the | |
953 | location's list. Go backwards (if possible) and locate the first one. */ | |
954 | while ((locp_found - 1) >= bp_location | |
955 | && (*(locp_found - 1))->address == address) | |
956 | locp_found--; | |
957 | ||
958 | return locp_found; | |
959 | } | |
960 | ||
adc36818 PM |
961 | void |
962 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
963 | int from_tty) | |
964 | { | |
3a5c3e22 PA |
965 | xfree (b->cond_string); |
966 | b->cond_string = NULL; | |
adc36818 | 967 | |
3a5c3e22 | 968 | if (is_watchpoint (b)) |
adc36818 | 969 | { |
3a5c3e22 PA |
970 | struct watchpoint *w = (struct watchpoint *) b; |
971 | ||
972 | xfree (w->cond_exp); | |
973 | w->cond_exp = NULL; | |
974 | } | |
975 | else | |
976 | { | |
977 | struct bp_location *loc; | |
978 | ||
979 | for (loc = b->loc; loc; loc = loc->next) | |
980 | { | |
981 | xfree (loc->cond); | |
982 | loc->cond = NULL; | |
b775012e LM |
983 | |
984 | /* No need to free the condition agent expression | |
985 | bytecode (if we have one). We will handle this | |
986 | when we go through update_global_location_list. */ | |
3a5c3e22 | 987 | } |
adc36818 | 988 | } |
adc36818 PM |
989 | |
990 | if (*exp == 0) | |
991 | { | |
992 | if (from_tty) | |
993 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
994 | } | |
995 | else | |
996 | { | |
bbc13ae3 | 997 | const char *arg = exp; |
cc59ec59 | 998 | |
adc36818 PM |
999 | /* I don't know if it matters whether this is the string the user |
1000 | typed in or the decompiled expression. */ | |
1001 | b->cond_string = xstrdup (arg); | |
1002 | b->condition_not_parsed = 0; | |
1003 | ||
1004 | if (is_watchpoint (b)) | |
1005 | { | |
3a5c3e22 PA |
1006 | struct watchpoint *w = (struct watchpoint *) b; |
1007 | ||
adc36818 PM |
1008 | innermost_block = NULL; |
1009 | arg = exp; | |
1bb9788d | 1010 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
1011 | if (*arg) |
1012 | error (_("Junk at end of expression")); | |
3a5c3e22 | 1013 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
1014 | } |
1015 | else | |
1016 | { | |
3a5c3e22 PA |
1017 | struct bp_location *loc; |
1018 | ||
adc36818 PM |
1019 | for (loc = b->loc; loc; loc = loc->next) |
1020 | { | |
1021 | arg = exp; | |
1022 | loc->cond = | |
1bb9788d TT |
1023 | parse_exp_1 (&arg, loc->address, |
1024 | block_for_pc (loc->address), 0); | |
adc36818 PM |
1025 | if (*arg) |
1026 | error (_("Junk at end of expression")); | |
1027 | } | |
1028 | } | |
1029 | } | |
b775012e LM |
1030 | mark_breakpoint_modified (b); |
1031 | ||
8d3788bd | 1032 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
1033 | } |
1034 | ||
d55637df TT |
1035 | /* Completion for the "condition" command. */ |
1036 | ||
1037 | static VEC (char_ptr) * | |
6f937416 PA |
1038 | condition_completer (struct cmd_list_element *cmd, |
1039 | const char *text, const char *word) | |
d55637df | 1040 | { |
6f937416 | 1041 | const char *space; |
d55637df | 1042 | |
6f937416 PA |
1043 | text = skip_spaces_const (text); |
1044 | space = skip_to_space_const (text); | |
d55637df TT |
1045 | if (*space == '\0') |
1046 | { | |
1047 | int len; | |
1048 | struct breakpoint *b; | |
1049 | VEC (char_ptr) *result = NULL; | |
1050 | ||
1051 | if (text[0] == '$') | |
1052 | { | |
1053 | /* We don't support completion of history indices. */ | |
1054 | if (isdigit (text[1])) | |
1055 | return NULL; | |
1056 | return complete_internalvar (&text[1]); | |
1057 | } | |
1058 | ||
1059 | /* We're completing the breakpoint number. */ | |
1060 | len = strlen (text); | |
1061 | ||
1062 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
1063 | { |
1064 | char number[50]; | |
1065 | ||
1066 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1067 | ||
1068 | if (strncmp (number, text, len) == 0) | |
1069 | VEC_safe_push (char_ptr, result, xstrdup (number)); | |
1070 | } | |
d55637df TT |
1071 | |
1072 | return result; | |
1073 | } | |
1074 | ||
1075 | /* We're completing the expression part. */ | |
6f937416 | 1076 | text = skip_spaces_const (space); |
d55637df TT |
1077 | return expression_completer (cmd, text, word); |
1078 | } | |
1079 | ||
c906108c SS |
1080 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1081 | ||
1082 | static void | |
fba45db2 | 1083 | condition_command (char *arg, int from_tty) |
c906108c | 1084 | { |
52f0bd74 | 1085 | struct breakpoint *b; |
c906108c | 1086 | char *p; |
52f0bd74 | 1087 | int bnum; |
c906108c SS |
1088 | |
1089 | if (arg == 0) | |
e2e0b3e5 | 1090 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1091 | |
1092 | p = arg; | |
1093 | bnum = get_number (&p); | |
5c44784c | 1094 | if (bnum == 0) |
8a3fe4f8 | 1095 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1096 | |
1097 | ALL_BREAKPOINTS (b) | |
1098 | if (b->number == bnum) | |
2f069f6f | 1099 | { |
6dddc817 DE |
1100 | /* Check if this breakpoint has a "stop" method implemented in an |
1101 | extension language. This method and conditions entered into GDB | |
1102 | from the CLI are mutually exclusive. */ | |
1103 | const struct extension_language_defn *extlang | |
1104 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1105 | ||
1106 | if (extlang != NULL) | |
1107 | { | |
1108 | error (_("Only one stop condition allowed. There is currently" | |
1109 | " a %s stop condition defined for this breakpoint."), | |
1110 | ext_lang_capitalized_name (extlang)); | |
1111 | } | |
2566ad2d | 1112 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1113 | |
1114 | if (is_breakpoint (b)) | |
44702360 | 1115 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 1116 | |
2f069f6f JB |
1117 | return; |
1118 | } | |
c906108c | 1119 | |
8a3fe4f8 | 1120 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1121 | } |
1122 | ||
a7bdde9e VP |
1123 | /* Check that COMMAND do not contain commands that are suitable |
1124 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1125 | Throw if any such commands is found. */ |
1126 | ||
a7bdde9e VP |
1127 | static void |
1128 | check_no_tracepoint_commands (struct command_line *commands) | |
1129 | { | |
1130 | struct command_line *c; | |
cc59ec59 | 1131 | |
a7bdde9e VP |
1132 | for (c = commands; c; c = c->next) |
1133 | { | |
1134 | int i; | |
1135 | ||
1136 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1137 | error (_("The 'while-stepping' command can " |
1138 | "only be used for tracepoints")); | |
a7bdde9e VP |
1139 | |
1140 | for (i = 0; i < c->body_count; ++i) | |
1141 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1142 | ||
1143 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1144 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1145 | command directly. */ |
1146 | if (strstr (c->line, "collect ") == c->line) | |
1147 | error (_("The 'collect' command can only be used for tracepoints")); | |
1148 | ||
51661e93 VP |
1149 | if (strstr (c->line, "teval ") == c->line) |
1150 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1151 | } |
1152 | } | |
1153 | ||
d77f58be SS |
1154 | /* Encapsulate tests for different types of tracepoints. */ |
1155 | ||
d9b3f62e PA |
1156 | static int |
1157 | is_tracepoint_type (enum bptype type) | |
1158 | { | |
1159 | return (type == bp_tracepoint | |
1160 | || type == bp_fast_tracepoint | |
1161 | || type == bp_static_tracepoint); | |
1162 | } | |
1163 | ||
a7bdde9e | 1164 | int |
d77f58be | 1165 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1166 | { |
d9b3f62e | 1167 | return is_tracepoint_type (b->type); |
a7bdde9e | 1168 | } |
d9b3f62e | 1169 | |
e5dd4106 | 1170 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1171 | breakpoint. This function will throw an exception if a problem is |
1172 | found. */ | |
48cb2d85 | 1173 | |
95a42b64 TT |
1174 | static void |
1175 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1176 | struct command_line *commands) | |
48cb2d85 | 1177 | { |
d77f58be | 1178 | if (is_tracepoint (b)) |
a7bdde9e | 1179 | { |
c9a6ce02 | 1180 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1181 | struct command_line *c; |
1182 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1183 | |
1184 | /* Reset the while-stepping step count. The previous commands | |
1185 | might have included a while-stepping action, while the new | |
1186 | ones might not. */ | |
1187 | t->step_count = 0; | |
1188 | ||
1189 | /* We need to verify that each top-level element of commands is | |
1190 | valid for tracepoints, that there's at most one | |
1191 | while-stepping element, and that the while-stepping's body | |
1192 | has valid tracing commands excluding nested while-stepping. | |
1193 | We also need to validate the tracepoint action line in the | |
1194 | context of the tracepoint --- validate_actionline actually | |
1195 | has side effects, like setting the tracepoint's | |
1196 | while-stepping STEP_COUNT, in addition to checking if the | |
1197 | collect/teval actions parse and make sense in the | |
1198 | tracepoint's context. */ | |
a7bdde9e VP |
1199 | for (c = commands; c; c = c->next) |
1200 | { | |
a7bdde9e VP |
1201 | if (c->control_type == while_stepping_control) |
1202 | { | |
1203 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1204 | error (_("The 'while-stepping' command " |
1205 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1206 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1207 | error (_("The 'while-stepping' command " |
1208 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1209 | |
1210 | if (while_stepping) | |
3e43a32a MS |
1211 | error (_("The 'while-stepping' command " |
1212 | "can be used only once")); | |
a7bdde9e VP |
1213 | else |
1214 | while_stepping = c; | |
1215 | } | |
c9a6ce02 PA |
1216 | |
1217 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1218 | } |
1219 | if (while_stepping) | |
1220 | { | |
1221 | struct command_line *c2; | |
1222 | ||
1223 | gdb_assert (while_stepping->body_count == 1); | |
1224 | c2 = while_stepping->body_list[0]; | |
1225 | for (; c2; c2 = c2->next) | |
1226 | { | |
a7bdde9e VP |
1227 | if (c2->control_type == while_stepping_control) |
1228 | error (_("The 'while-stepping' command cannot be nested")); | |
1229 | } | |
1230 | } | |
1231 | } | |
1232 | else | |
1233 | { | |
1234 | check_no_tracepoint_commands (commands); | |
1235 | } | |
95a42b64 TT |
1236 | } |
1237 | ||
0fb4aa4b PA |
1238 | /* Return a vector of all the static tracepoints set at ADDR. The |
1239 | caller is responsible for releasing the vector. */ | |
1240 | ||
1241 | VEC(breakpoint_p) * | |
1242 | static_tracepoints_here (CORE_ADDR addr) | |
1243 | { | |
1244 | struct breakpoint *b; | |
1245 | VEC(breakpoint_p) *found = 0; | |
1246 | struct bp_location *loc; | |
1247 | ||
1248 | ALL_BREAKPOINTS (b) | |
1249 | if (b->type == bp_static_tracepoint) | |
1250 | { | |
1251 | for (loc = b->loc; loc; loc = loc->next) | |
1252 | if (loc->address == addr) | |
1253 | VEC_safe_push(breakpoint_p, found, b); | |
1254 | } | |
1255 | ||
1256 | return found; | |
1257 | } | |
1258 | ||
95a42b64 | 1259 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1260 | validate that only allowed commands are included. */ |
95a42b64 TT |
1261 | |
1262 | void | |
4a64f543 MS |
1263 | breakpoint_set_commands (struct breakpoint *b, |
1264 | struct command_line *commands) | |
95a42b64 TT |
1265 | { |
1266 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1267 | |
9add0f1b TT |
1268 | decref_counted_command_line (&b->commands); |
1269 | b->commands = alloc_counted_command_line (commands); | |
8d3788bd | 1270 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1271 | } |
1272 | ||
45a43567 TT |
1273 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1274 | is not the same as the "silent" that may appear in the breakpoint's | |
1275 | commands. */ | |
1276 | ||
1277 | void | |
1278 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1279 | { | |
1280 | int old_silent = b->silent; | |
1281 | ||
1282 | b->silent = silent; | |
1283 | if (old_silent != silent) | |
8d3788bd | 1284 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1285 | } |
1286 | ||
1287 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1288 | breakpoint work for any thread. */ | |
1289 | ||
1290 | void | |
1291 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1292 | { | |
1293 | int old_thread = b->thread; | |
1294 | ||
1295 | b->thread = thread; | |
1296 | if (old_thread != thread) | |
8d3788bd | 1297 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1298 | } |
1299 | ||
1300 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1301 | breakpoint work for any task. */ | |
1302 | ||
1303 | void | |
1304 | breakpoint_set_task (struct breakpoint *b, int task) | |
1305 | { | |
1306 | int old_task = b->task; | |
1307 | ||
1308 | b->task = task; | |
1309 | if (old_task != task) | |
8d3788bd | 1310 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1311 | } |
1312 | ||
95a42b64 TT |
1313 | void |
1314 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1315 | { |
1316 | struct breakpoint *b = closure; | |
cc59ec59 | 1317 | |
6f937416 | 1318 | validate_actionline (line, b); |
a7bdde9e VP |
1319 | } |
1320 | ||
95a42b64 TT |
1321 | /* A structure used to pass information through |
1322 | map_breakpoint_numbers. */ | |
1323 | ||
1324 | struct commands_info | |
1325 | { | |
1326 | /* True if the command was typed at a tty. */ | |
1327 | int from_tty; | |
86b17b60 PA |
1328 | |
1329 | /* The breakpoint range spec. */ | |
1330 | char *arg; | |
1331 | ||
95a42b64 TT |
1332 | /* Non-NULL if the body of the commands are being read from this |
1333 | already-parsed command. */ | |
1334 | struct command_line *control; | |
86b17b60 | 1335 | |
95a42b64 TT |
1336 | /* The command lines read from the user, or NULL if they have not |
1337 | yet been read. */ | |
1338 | struct counted_command_line *cmd; | |
1339 | }; | |
1340 | ||
1341 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1342 | commands_command. */ | |
1343 | ||
c906108c | 1344 | static void |
95a42b64 | 1345 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1346 | { |
95a42b64 | 1347 | struct commands_info *info = data; |
c906108c | 1348 | |
95a42b64 TT |
1349 | if (info->cmd == NULL) |
1350 | { | |
1351 | struct command_line *l; | |
5c44784c | 1352 | |
95a42b64 TT |
1353 | if (info->control != NULL) |
1354 | l = copy_command_lines (info->control->body_list[0]); | |
1355 | else | |
86b17b60 PA |
1356 | { |
1357 | struct cleanup *old_chain; | |
1358 | char *str; | |
c5aa993b | 1359 | |
3e43a32a MS |
1360 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1361 | "%s, one per line."), | |
86b17b60 PA |
1362 | info->arg); |
1363 | ||
1364 | old_chain = make_cleanup (xfree, str); | |
1365 | ||
1366 | l = read_command_lines (str, | |
1367 | info->from_tty, 1, | |
d77f58be | 1368 | (is_tracepoint (b) |
86b17b60 PA |
1369 | ? check_tracepoint_command : 0), |
1370 | b); | |
1371 | ||
1372 | do_cleanups (old_chain); | |
1373 | } | |
a7bdde9e | 1374 | |
95a42b64 TT |
1375 | info->cmd = alloc_counted_command_line (l); |
1376 | } | |
1377 | ||
1378 | /* If a breakpoint was on the list more than once, we don't need to | |
1379 | do anything. */ | |
1380 | if (b->commands != info->cmd) | |
1381 | { | |
1382 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1383 | incref_counted_command_line (info->cmd); | |
1384 | decref_counted_command_line (&b->commands); | |
1385 | b->commands = info->cmd; | |
8d3788bd | 1386 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1387 | } |
95a42b64 TT |
1388 | } |
1389 | ||
1390 | static void | |
4a64f543 MS |
1391 | commands_command_1 (char *arg, int from_tty, |
1392 | struct command_line *control) | |
95a42b64 TT |
1393 | { |
1394 | struct cleanup *cleanups; | |
1395 | struct commands_info info; | |
1396 | ||
1397 | info.from_tty = from_tty; | |
1398 | info.control = control; | |
1399 | info.cmd = NULL; | |
1400 | /* If we read command lines from the user, then `info' will hold an | |
1401 | extra reference to the commands that we must clean up. */ | |
1402 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1403 | ||
1404 | if (arg == NULL || !*arg) | |
1405 | { | |
86b17b60 | 1406 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1407 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1408 | breakpoint_count); | |
95a42b64 TT |
1409 | else if (breakpoint_count > 0) |
1410 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1411 | else |
1412 | { | |
1413 | /* So that we don't try to free the incoming non-NULL | |
1414 | argument in the cleanup below. Mapping breakpoint | |
1415 | numbers will fail in this case. */ | |
1416 | arg = NULL; | |
1417 | } | |
95a42b64 | 1418 | } |
9766ced4 SS |
1419 | else |
1420 | /* The command loop has some static state, so we need to preserve | |
1421 | our argument. */ | |
1422 | arg = xstrdup (arg); | |
86b17b60 PA |
1423 | |
1424 | if (arg != NULL) | |
1425 | make_cleanup (xfree, arg); | |
1426 | ||
1427 | info.arg = arg; | |
95a42b64 TT |
1428 | |
1429 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1430 | ||
1431 | if (info.cmd == NULL) | |
1432 | error (_("No breakpoints specified.")); | |
1433 | ||
1434 | do_cleanups (cleanups); | |
1435 | } | |
1436 | ||
1437 | static void | |
1438 | commands_command (char *arg, int from_tty) | |
1439 | { | |
1440 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1441 | } |
40c03ae8 EZ |
1442 | |
1443 | /* Like commands_command, but instead of reading the commands from | |
1444 | input stream, takes them from an already parsed command structure. | |
1445 | ||
1446 | This is used by cli-script.c to DTRT with breakpoint commands | |
1447 | that are part of if and while bodies. */ | |
1448 | enum command_control_type | |
1449 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1450 | { | |
95a42b64 TT |
1451 | commands_command_1 (arg, 0, cmd); |
1452 | return simple_control; | |
40c03ae8 | 1453 | } |
876fa593 JK |
1454 | |
1455 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1456 | ||
1457 | static int | |
1458 | bp_location_has_shadow (struct bp_location *bl) | |
1459 | { | |
1460 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1461 | return 0; | |
1462 | if (!bl->inserted) | |
1463 | return 0; | |
1464 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1465 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1466 | return 0; |
1467 | return 1; | |
1468 | } | |
1469 | ||
9d497a19 PA |
1470 | /* Update BUF, which is LEN bytes read from the target address |
1471 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1472 | contents. | |
1473 | ||
1474 | If READBUF is not NULL, this buffer must not overlap with the of | |
1475 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1476 | failed assertion internal error will be raised. */ | |
1477 | ||
1478 | static void | |
1479 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1480 | const gdb_byte *writebuf_org, | |
1481 | ULONGEST memaddr, LONGEST len, | |
1482 | struct bp_target_info *target_info, | |
1483 | struct gdbarch *gdbarch) | |
1484 | { | |
1485 | /* Now do full processing of the found relevant range of elements. */ | |
1486 | CORE_ADDR bp_addr = 0; | |
1487 | int bp_size = 0; | |
1488 | int bptoffset = 0; | |
1489 | ||
1490 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1491 | current_program_space->aspace, 0)) | |
1492 | { | |
1493 | /* The breakpoint is inserted in a different address space. */ | |
1494 | return; | |
1495 | } | |
1496 | ||
1497 | /* Addresses and length of the part of the breakpoint that | |
1498 | we need to copy. */ | |
1499 | bp_addr = target_info->placed_address; | |
1500 | bp_size = target_info->shadow_len; | |
1501 | ||
1502 | if (bp_addr + bp_size <= memaddr) | |
1503 | { | |
1504 | /* The breakpoint is entirely before the chunk of memory we are | |
1505 | reading. */ | |
1506 | return; | |
1507 | } | |
1508 | ||
1509 | if (bp_addr >= memaddr + len) | |
1510 | { | |
1511 | /* The breakpoint is entirely after the chunk of memory we are | |
1512 | reading. */ | |
1513 | return; | |
1514 | } | |
1515 | ||
1516 | /* Offset within shadow_contents. */ | |
1517 | if (bp_addr < memaddr) | |
1518 | { | |
1519 | /* Only copy the second part of the breakpoint. */ | |
1520 | bp_size -= memaddr - bp_addr; | |
1521 | bptoffset = memaddr - bp_addr; | |
1522 | bp_addr = memaddr; | |
1523 | } | |
1524 | ||
1525 | if (bp_addr + bp_size > memaddr + len) | |
1526 | { | |
1527 | /* Only copy the first part of the breakpoint. */ | |
1528 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1529 | } | |
1530 | ||
1531 | if (readbuf != NULL) | |
1532 | { | |
1533 | /* Verify that the readbuf buffer does not overlap with the | |
1534 | shadow_contents buffer. */ | |
1535 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1536 | || readbuf >= (target_info->shadow_contents | |
1537 | + target_info->shadow_len)); | |
1538 | ||
1539 | /* Update the read buffer with this inserted breakpoint's | |
1540 | shadow. */ | |
1541 | memcpy (readbuf + bp_addr - memaddr, | |
1542 | target_info->shadow_contents + bptoffset, bp_size); | |
1543 | } | |
1544 | else | |
1545 | { | |
1546 | const unsigned char *bp; | |
0d5ed153 MR |
1547 | CORE_ADDR addr = target_info->reqstd_address; |
1548 | int placed_size; | |
9d497a19 PA |
1549 | |
1550 | /* Update the shadow with what we want to write to memory. */ | |
1551 | memcpy (target_info->shadow_contents + bptoffset, | |
1552 | writebuf_org + bp_addr - memaddr, bp_size); | |
1553 | ||
1554 | /* Determine appropriate breakpoint contents and size for this | |
1555 | address. */ | |
0d5ed153 | 1556 | bp = gdbarch_breakpoint_from_pc (gdbarch, &addr, &placed_size); |
9d497a19 PA |
1557 | |
1558 | /* Update the final write buffer with this inserted | |
1559 | breakpoint's INSN. */ | |
1560 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1561 | } | |
1562 | } | |
1563 | ||
8defab1a | 1564 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1565 | by replacing any memory breakpoints with their shadowed contents. |
1566 | ||
35c63cd8 JB |
1567 | If READBUF is not NULL, this buffer must not overlap with any of |
1568 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1569 | a failed assertion internal error will be raised. | |
1570 | ||
876fa593 | 1571 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1572 | bl->address - bp_location_placed_address_before_address_max |
1573 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1574 | The range we were requested to resolve shadows for is: |
1575 | memaddr ... memaddr + len | |
1576 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1577 | memaddr + len <= (bl->address |
1578 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1579 | and: |
35df4500 | 1580 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1581 | |
8defab1a | 1582 | void |
f0ba3972 PA |
1583 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1584 | const gdb_byte *writebuf_org, | |
1585 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1586 | { |
4a64f543 MS |
1587 | /* Left boundary, right boundary and median element of our binary |
1588 | search. */ | |
876fa593 | 1589 | unsigned bc_l, bc_r, bc; |
9d497a19 | 1590 | size_t i; |
876fa593 | 1591 | |
4a64f543 MS |
1592 | /* Find BC_L which is a leftmost element which may affect BUF |
1593 | content. It is safe to report lower value but a failure to | |
1594 | report higher one. */ | |
876fa593 JK |
1595 | |
1596 | bc_l = 0; | |
1597 | bc_r = bp_location_count; | |
1598 | while (bc_l + 1 < bc_r) | |
1599 | { | |
35df4500 | 1600 | struct bp_location *bl; |
876fa593 JK |
1601 | |
1602 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1603 | bl = bp_location[bc]; |
876fa593 | 1604 | |
4a64f543 MS |
1605 | /* Check first BL->ADDRESS will not overflow due to the added |
1606 | constant. Then advance the left boundary only if we are sure | |
1607 | the BC element can in no way affect the BUF content (MEMADDR | |
1608 | to MEMADDR + LEN range). | |
876fa593 | 1609 | |
4a64f543 MS |
1610 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1611 | offset so that we cannot miss a breakpoint with its shadow | |
1612 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1613 | |
35df4500 TJB |
1614 | if ((bl->address + bp_location_shadow_len_after_address_max |
1615 | >= bl->address) | |
1616 | && (bl->address + bp_location_shadow_len_after_address_max | |
1617 | <= memaddr)) | |
876fa593 JK |
1618 | bc_l = bc; |
1619 | else | |
1620 | bc_r = bc; | |
1621 | } | |
1622 | ||
128070bb PA |
1623 | /* Due to the binary search above, we need to make sure we pick the |
1624 | first location that's at BC_L's address. E.g., if there are | |
1625 | multiple locations at the same address, BC_L may end up pointing | |
1626 | at a duplicate location, and miss the "master"/"inserted" | |
1627 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1628 | B: | |
1629 | ||
1630 | L1@A, L2@A, L3@B, ... | |
1631 | ||
1632 | BC_L could end up pointing at location L2, while the "master" | |
1633 | location could be L1. Since the `loc->inserted' flag is only set | |
1634 | on "master" locations, we'd forget to restore the shadow of L1 | |
1635 | and L2. */ | |
1636 | while (bc_l > 0 | |
1637 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1638 | bc_l--; | |
1639 | ||
876fa593 JK |
1640 | /* Now do full processing of the found relevant range of elements. */ |
1641 | ||
1642 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1643 | { |
35df4500 | 1644 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1645 | CORE_ADDR bp_addr = 0; |
1646 | int bp_size = 0; | |
1647 | int bptoffset = 0; | |
1648 | ||
35df4500 TJB |
1649 | /* bp_location array has BL->OWNER always non-NULL. */ |
1650 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1651 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1652 | bl->owner->number); |
ffce0d52 | 1653 | |
e5dd4106 | 1654 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1655 | content. */ |
1656 | ||
35df4500 TJB |
1657 | if (bl->address >= bp_location_placed_address_before_address_max |
1658 | && memaddr + len <= (bl->address | |
1659 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1660 | break; |
1661 | ||
35df4500 | 1662 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1663 | continue; |
6c95b8df | 1664 | |
9d497a19 PA |
1665 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1666 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1667 | } | |
c5aa993b | 1668 | |
9d497a19 PA |
1669 | /* Now process single-step breakpoints. These are not found in the |
1670 | bp_location array. */ | |
1671 | for (i = 0; i < 2; i++) | |
1672 | { | |
1673 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
c5aa993b | 1674 | |
9d497a19 PA |
1675 | if (bp_tgt != NULL) |
1676 | { | |
1677 | struct gdbarch *gdbarch = single_step_gdbarch[i]; | |
c5aa993b | 1678 | |
9d497a19 PA |
1679 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1680 | memaddr, len, bp_tgt, gdbarch); | |
1681 | } | |
1682 | } | |
c906108c | 1683 | } |
9d497a19 | 1684 | |
c906108c | 1685 | \f |
c5aa993b | 1686 | |
b775012e LM |
1687 | /* Return true if BPT is either a software breakpoint or a hardware |
1688 | breakpoint. */ | |
1689 | ||
1690 | int | |
1691 | is_breakpoint (const struct breakpoint *bpt) | |
1692 | { | |
1693 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1694 | || bpt->type == bp_hardware_breakpoint |
1695 | || bpt->type == bp_dprintf); | |
b775012e LM |
1696 | } |
1697 | ||
60e1c644 PA |
1698 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1699 | ||
a5606eee | 1700 | static int |
d77f58be | 1701 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1702 | { |
1703 | return (bpt->type == bp_hardware_watchpoint | |
1704 | || bpt->type == bp_read_watchpoint | |
1705 | || bpt->type == bp_access_watchpoint); | |
1706 | } | |
7270d8f2 | 1707 | |
60e1c644 PA |
1708 | /* Return true if BPT is of any watchpoint kind, hardware or |
1709 | software. */ | |
1710 | ||
3a5c3e22 | 1711 | int |
d77f58be | 1712 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1713 | { |
1714 | return (is_hardware_watchpoint (bpt) | |
1715 | || bpt->type == bp_watchpoint); | |
1716 | } | |
1717 | ||
3a5c3e22 PA |
1718 | /* Returns true if the current thread and its running state are safe |
1719 | to evaluate or update watchpoint B. Watchpoints on local | |
1720 | expressions need to be evaluated in the context of the thread that | |
1721 | was current when the watchpoint was created, and, that thread needs | |
1722 | to be stopped to be able to select the correct frame context. | |
1723 | Watchpoints on global expressions can be evaluated on any thread, | |
1724 | and in any state. It is presently left to the target allowing | |
1725 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1726 | |
1727 | static int | |
3a5c3e22 | 1728 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1729 | { |
d0d8b0c6 JK |
1730 | return (b->base.pspace == current_program_space |
1731 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1732 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1733 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1734 | } |
1735 | ||
d0fb5eae JK |
1736 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1737 | associated bp_watchpoint_scope breakpoint. */ | |
1738 | ||
1739 | static void | |
3a5c3e22 | 1740 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1741 | { |
3a5c3e22 | 1742 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1743 | |
1744 | if (b->related_breakpoint != b) | |
1745 | { | |
1746 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1747 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1748 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1749 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1750 | b->related_breakpoint = b; | |
1751 | } | |
1752 | b->disposition = disp_del_at_next_stop; | |
1753 | } | |
1754 | ||
bb9d5f81 PP |
1755 | /* Extract a bitfield value from value VAL using the bit parameters contained in |
1756 | watchpoint W. */ | |
1757 | ||
1758 | static struct value * | |
1759 | extract_bitfield_from_watchpoint_value (struct watchpoint *w, struct value *val) | |
1760 | { | |
1761 | struct value *bit_val; | |
1762 | ||
1763 | if (val == NULL) | |
1764 | return NULL; | |
1765 | ||
1766 | bit_val = allocate_value (value_type (val)); | |
1767 | ||
1768 | unpack_value_bitfield (bit_val, | |
1769 | w->val_bitpos, | |
1770 | w->val_bitsize, | |
1771 | value_contents_for_printing (val), | |
1772 | value_offset (val), | |
1773 | val); | |
1774 | ||
1775 | return bit_val; | |
1776 | } | |
1777 | ||
567e1b4e JB |
1778 | /* Assuming that B is a watchpoint: |
1779 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1780 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1781 | - Evaluate the condition if there is one, and store the result |
1782 | in b->loc->cond. | |
a5606eee VP |
1783 | - Update the list of values that must be watched in B->loc. |
1784 | ||
4a64f543 MS |
1785 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1786 | nothing. If this is local watchpoint that is out of scope, delete | |
1787 | it. | |
1788 | ||
1789 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1790 | removed + inserted on each stop here. Normal breakpoints must | |
1791 | never be removed because they might be missed by a running thread | |
1792 | when debugging in non-stop mode. On the other hand, hardware | |
1793 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1794 | to each LWP since they are stored in each LWP's hardware debug | |
1795 | registers. Therefore, such LWP must be stopped first in order to | |
1796 | be able to modify its hardware watchpoints. | |
1797 | ||
1798 | Hardware watchpoints must be reset exactly once after being | |
1799 | presented to the user. It cannot be done sooner, because it would | |
1800 | reset the data used to present the watchpoint hit to the user. And | |
1801 | it must not be done later because it could display the same single | |
1802 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1803 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1804 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1805 | not user-visible - its hit is suppressed if the memory content has | |
1806 | not changed. | |
1807 | ||
1808 | The following constraints influence the location where we can reset | |
1809 | hardware watchpoints: | |
1810 | ||
1811 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1812 | called several times when GDB stops. | |
1813 | ||
1814 | [linux] | |
1815 | * Multiple hardware watchpoints can be hit at the same time, | |
1816 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1817 | hit at a time as the reason for stopping, and all the other hits | |
1818 | are presented later, one after the other, each time the user | |
1819 | requests the execution to be resumed. Execution is not resumed | |
1820 | for the threads still having pending hit event stored in | |
1821 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1822 | the inferior on the first stop the thread hit event is kept being | |
1823 | reported from its cached value by linux_nat_stopped_data_address | |
1824 | until the real thread resume happens after the watchpoint gets | |
1825 | presented and thus its LWP_INFO->STATUS gets reset. | |
1826 | ||
1827 | Therefore the hardware watchpoint hit can get safely reset on the | |
1828 | watchpoint removal from inferior. */ | |
a79d3c27 | 1829 | |
b40ce68a | 1830 | static void |
3a5c3e22 | 1831 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1832 | { |
a5606eee | 1833 | int within_current_scope; |
a5606eee | 1834 | struct frame_id saved_frame_id; |
66076460 | 1835 | int frame_saved; |
a5606eee | 1836 | |
f6bc2008 PA |
1837 | /* If this is a local watchpoint, we only want to check if the |
1838 | watchpoint frame is in scope if the current thread is the thread | |
1839 | that was used to create the watchpoint. */ | |
1840 | if (!watchpoint_in_thread_scope (b)) | |
1841 | return; | |
1842 | ||
3a5c3e22 | 1843 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1844 | return; |
1845 | ||
66076460 | 1846 | frame_saved = 0; |
a5606eee VP |
1847 | |
1848 | /* Determine if the watchpoint is within scope. */ | |
1849 | if (b->exp_valid_block == NULL) | |
1850 | within_current_scope = 1; | |
1851 | else | |
1852 | { | |
b5db5dfc UW |
1853 | struct frame_info *fi = get_current_frame (); |
1854 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1855 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1856 | ||
1857 | /* If we're in a function epilogue, unwinding may not work | |
1858 | properly, so do not attempt to recreate locations at this | |
1859 | point. See similar comments in watchpoint_check. */ | |
1860 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1861 | return; | |
66076460 DJ |
1862 | |
1863 | /* Save the current frame's ID so we can restore it after | |
1864 | evaluating the watchpoint expression on its own frame. */ | |
1865 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1866 | took a frame parameter, so that we didn't have to change the | |
1867 | selected frame. */ | |
1868 | frame_saved = 1; | |
1869 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1870 | ||
a5606eee VP |
1871 | fi = frame_find_by_id (b->watchpoint_frame); |
1872 | within_current_scope = (fi != NULL); | |
1873 | if (within_current_scope) | |
1874 | select_frame (fi); | |
1875 | } | |
1876 | ||
b5db5dfc UW |
1877 | /* We don't free locations. They are stored in the bp_location array |
1878 | and update_global_location_list will eventually delete them and | |
1879 | remove breakpoints if needed. */ | |
3a5c3e22 | 1880 | b->base.loc = NULL; |
b5db5dfc | 1881 | |
a5606eee VP |
1882 | if (within_current_scope && reparse) |
1883 | { | |
bbc13ae3 | 1884 | const char *s; |
d63d0675 | 1885 | |
a5606eee VP |
1886 | if (b->exp) |
1887 | { | |
1888 | xfree (b->exp); | |
1889 | b->exp = NULL; | |
1890 | } | |
d63d0675 | 1891 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1892 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1893 | /* If the meaning of expression itself changed, the old value is |
1894 | no longer relevant. We don't want to report a watchpoint hit | |
1895 | to the user when the old value and the new value may actually | |
1896 | be completely different objects. */ | |
1897 | value_free (b->val); | |
fa4727a6 DJ |
1898 | b->val = NULL; |
1899 | b->val_valid = 0; | |
60e1c644 PA |
1900 | |
1901 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1902 | expression is stored in the breakpoint object, not in the | |
1903 | locations (re)created below. */ | |
3a5c3e22 | 1904 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1905 | { |
1906 | if (b->cond_exp != NULL) | |
1907 | { | |
1908 | xfree (b->cond_exp); | |
1909 | b->cond_exp = NULL; | |
1910 | } | |
1911 | ||
3a5c3e22 | 1912 | s = b->base.cond_string; |
1bb9788d | 1913 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1914 | } |
a5606eee | 1915 | } |
a5606eee VP |
1916 | |
1917 | /* If we failed to parse the expression, for example because | |
1918 | it refers to a global variable in a not-yet-loaded shared library, | |
1919 | don't try to insert watchpoint. We don't automatically delete | |
1920 | such watchpoint, though, since failure to parse expression | |
1921 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1922 | if (!target_has_execution) |
2d134ed3 PA |
1923 | { |
1924 | /* Without execution, memory can't change. No use to try and | |
1925 | set watchpoint locations. The watchpoint will be reset when | |
1926 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1927 | if (!can_use_hw_watchpoints) |
1928 | { | |
1929 | if (b->base.ops->works_in_software_mode (&b->base)) | |
1930 | b->base.type = bp_watchpoint; | |
1931 | else | |
638aa5a1 AB |
1932 | error (_("Can't set read/access watchpoint when " |
1933 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1934 | } |
2d134ed3 PA |
1935 | } |
1936 | else if (within_current_scope && b->exp) | |
a5606eee | 1937 | { |
0cf6dd15 | 1938 | int pc = 0; |
fa4727a6 | 1939 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1940 | struct program_space *frame_pspace; |
a5606eee | 1941 | |
3a1115a0 | 1942 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain, 0); |
a5606eee | 1943 | |
a5606eee VP |
1944 | /* Avoid setting b->val if it's already set. The meaning of |
1945 | b->val is 'the last value' user saw, and we should update | |
1946 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1947 | happens, the code that reports it updates b->val directly. |
1948 | We don't keep track of the memory value for masked | |
1949 | watchpoints. */ | |
3a5c3e22 | 1950 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 | 1951 | { |
bb9d5f81 PP |
1952 | if (b->val_bitsize != 0) |
1953 | { | |
1954 | v = extract_bitfield_from_watchpoint_value (b, v); | |
1955 | if (v != NULL) | |
1956 | release_value (v); | |
1957 | } | |
fa4727a6 DJ |
1958 | b->val = v; |
1959 | b->val_valid = 1; | |
1960 | } | |
a5606eee | 1961 | |
2d134ed3 PA |
1962 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1963 | ||
a5606eee | 1964 | /* Look at each value on the value chain. */ |
9fa40276 | 1965 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1966 | { |
1967 | /* If it's a memory location, and GDB actually needed | |
1968 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1969 | must watch it. If the first value returned is |
1970 | still lazy, that means an error occurred reading it; | |
1971 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1972 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1973 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1974 | { |
1975 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1976 | |
a5606eee VP |
1977 | /* We only watch structs and arrays if user asked |
1978 | for it explicitly, never if they just happen to | |
1979 | appear in the middle of some value chain. */ | |
fa4727a6 | 1980 | if (v == result |
a5606eee VP |
1981 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1982 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1983 | { | |
1984 | CORE_ADDR addr; | |
744a8059 | 1985 | int type; |
a5606eee | 1986 | struct bp_location *loc, **tmp; |
bb9d5f81 PP |
1987 | int bitpos = 0, bitsize = 0; |
1988 | ||
1989 | if (value_bitsize (v) != 0) | |
1990 | { | |
1991 | /* Extract the bit parameters out from the bitfield | |
1992 | sub-expression. */ | |
1993 | bitpos = value_bitpos (v); | |
1994 | bitsize = value_bitsize (v); | |
1995 | } | |
1996 | else if (v == result && b->val_bitsize != 0) | |
1997 | { | |
1998 | /* If VAL_BITSIZE != 0 then RESULT is actually a bitfield | |
1999 | lvalue whose bit parameters are saved in the fields | |
2000 | VAL_BITPOS and VAL_BITSIZE. */ | |
2001 | bitpos = b->val_bitpos; | |
2002 | bitsize = b->val_bitsize; | |
2003 | } | |
a5606eee | 2004 | |
42ae5230 | 2005 | addr = value_address (v); |
bb9d5f81 PP |
2006 | if (bitsize != 0) |
2007 | { | |
2008 | /* Skip the bytes that don't contain the bitfield. */ | |
2009 | addr += bitpos / 8; | |
2010 | } | |
2011 | ||
a5606eee | 2012 | type = hw_write; |
3a5c3e22 | 2013 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 2014 | type = hw_read; |
3a5c3e22 | 2015 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 2016 | type = hw_access; |
3a5c3e22 PA |
2017 | |
2018 | loc = allocate_bp_location (&b->base); | |
2019 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
2020 | ; |
2021 | *tmp = loc; | |
a6d9a66e | 2022 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
2023 | |
2024 | loc->pspace = frame_pspace; | |
a5606eee | 2025 | loc->address = addr; |
bb9d5f81 PP |
2026 | |
2027 | if (bitsize != 0) | |
2028 | { | |
2029 | /* Just cover the bytes that make up the bitfield. */ | |
2030 | loc->length = ((bitpos % 8) + bitsize + 7) / 8; | |
2031 | } | |
2032 | else | |
2033 | loc->length = TYPE_LENGTH (value_type (v)); | |
2034 | ||
a5606eee VP |
2035 | loc->watchpoint_type = type; |
2036 | } | |
2037 | } | |
9fa40276 TJB |
2038 | } |
2039 | ||
2040 | /* Change the type of breakpoint between hardware assisted or | |
2041 | an ordinary watchpoint depending on the hardware support | |
2042 | and free hardware slots. REPARSE is set when the inferior | |
2043 | is started. */ | |
a9634178 | 2044 | if (reparse) |
9fa40276 | 2045 | { |
e09342b5 | 2046 | int reg_cnt; |
9fa40276 TJB |
2047 | enum bp_loc_type loc_type; |
2048 | struct bp_location *bl; | |
a5606eee | 2049 | |
a9634178 | 2050 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
2051 | |
2052 | if (reg_cnt) | |
9fa40276 TJB |
2053 | { |
2054 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 2055 | enum bptype type; |
9fa40276 | 2056 | |
a9634178 TJB |
2057 | /* Use an exact watchpoint when there's only one memory region to be |
2058 | watched, and only one debug register is needed to watch it. */ | |
2059 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
2060 | ||
9fa40276 | 2061 | /* We need to determine how many resources are already |
e09342b5 TJB |
2062 | used for all other hardware watchpoints plus this one |
2063 | to see if we still have enough resources to also fit | |
a1398e0c PA |
2064 | this watchpoint in as well. */ |
2065 | ||
2066 | /* If this is a software watchpoint, we try to turn it | |
2067 | to a hardware one -- count resources as if B was of | |
2068 | hardware watchpoint type. */ | |
2069 | type = b->base.type; | |
2070 | if (type == bp_watchpoint) | |
2071 | type = bp_hardware_watchpoint; | |
2072 | ||
2073 | /* This watchpoint may or may not have been placed on | |
2074 | the list yet at this point (it won't be in the list | |
2075 | if we're trying to create it for the first time, | |
2076 | through watch_command), so always account for it | |
2077 | manually. */ | |
2078 | ||
2079 | /* Count resources used by all watchpoints except B. */ | |
2080 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
2081 | ||
2082 | /* Add in the resources needed for B. */ | |
2083 | i += hw_watchpoint_use_count (&b->base); | |
2084 | ||
2085 | target_resources_ok | |
2086 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 2087 | if (target_resources_ok <= 0) |
a9634178 | 2088 | { |
3a5c3e22 | 2089 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
2090 | |
2091 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
2092 | error (_("Target does not support this type of " |
2093 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
2094 | else if (target_resources_ok < 0 && !sw_mode) |
2095 | error (_("There are not enough available hardware " | |
2096 | "resources for this watchpoint.")); | |
a1398e0c PA |
2097 | |
2098 | /* Downgrade to software watchpoint. */ | |
2099 | b->base.type = bp_watchpoint; | |
2100 | } | |
2101 | else | |
2102 | { | |
2103 | /* If this was a software watchpoint, we've just | |
2104 | found we have enough resources to turn it to a | |
2105 | hardware watchpoint. Otherwise, this is a | |
2106 | nop. */ | |
2107 | b->base.type = type; | |
a9634178 | 2108 | } |
9fa40276 | 2109 | } |
3a5c3e22 | 2110 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
638aa5a1 AB |
2111 | { |
2112 | if (!can_use_hw_watchpoints) | |
2113 | error (_("Can't set read/access watchpoint when " | |
2114 | "hardware watchpoints are disabled.")); | |
2115 | else | |
2116 | error (_("Expression cannot be implemented with " | |
2117 | "read/access watchpoint.")); | |
2118 | } | |
9fa40276 | 2119 | else |
3a5c3e22 | 2120 | b->base.type = bp_watchpoint; |
9fa40276 | 2121 | |
3a5c3e22 | 2122 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 2123 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 2124 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
2125 | bl->loc_type = loc_type; |
2126 | } | |
2127 | ||
2128 | for (v = val_chain; v; v = next) | |
2129 | { | |
a5606eee VP |
2130 | next = value_next (v); |
2131 | if (v != b->val) | |
2132 | value_free (v); | |
2133 | } | |
2134 | ||
c7437ca6 PA |
2135 | /* If a software watchpoint is not watching any memory, then the |
2136 | above left it without any location set up. But, | |
2137 | bpstat_stop_status requires a location to be able to report | |
2138 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 2139 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 2140 | { |
3a5c3e22 PA |
2141 | struct breakpoint *base = &b->base; |
2142 | base->loc = allocate_bp_location (base); | |
2143 | base->loc->pspace = frame_pspace; | |
2144 | base->loc->address = -1; | |
2145 | base->loc->length = -1; | |
2146 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 2147 | } |
a5606eee VP |
2148 | } |
2149 | else if (!within_current_scope) | |
7270d8f2 | 2150 | { |
ac74f770 MS |
2151 | printf_filtered (_("\ |
2152 | Watchpoint %d deleted because the program has left the block\n\ | |
2153 | in which its expression is valid.\n"), | |
3a5c3e22 | 2154 | b->base.number); |
d0fb5eae | 2155 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2156 | } |
a5606eee VP |
2157 | |
2158 | /* Restore the selected frame. */ | |
66076460 DJ |
2159 | if (frame_saved) |
2160 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2161 | } |
2162 | ||
a5606eee | 2163 | |
74960c60 | 2164 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2165 | inserted in the inferior. We don't differentiate the type of BL's owner |
2166 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2167 | breakpoint_ops is not defined, because in insert_bp_location, | |
2168 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2169 | static int |
35df4500 | 2170 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2171 | { |
35df4500 | 2172 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2173 | return 0; |
2174 | ||
35df4500 | 2175 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2176 | return 0; |
2177 | ||
35df4500 | 2178 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2179 | return 0; |
2180 | ||
f8eba3c6 TT |
2181 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2182 | return 0; | |
2183 | ||
56710373 PA |
2184 | /* This is set for example, when we're attached to the parent of a |
2185 | vfork, and have detached from the child. The child is running | |
2186 | free, and we expect it to do an exec or exit, at which point the | |
2187 | OS makes the parent schedulable again (and the target reports | |
2188 | that the vfork is done). Until the child is done with the shared | |
2189 | memory region, do not insert breakpoints in the parent, otherwise | |
2190 | the child could still trip on the parent's breakpoints. Since | |
2191 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2192 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2193 | return 0; |
2194 | ||
31e77af2 PA |
2195 | /* Don't insert a breakpoint if we're trying to step past its |
2196 | location. */ | |
2197 | if ((bl->loc_type == bp_loc_software_breakpoint | |
2198 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2199 | && stepping_past_instruction_at (bl->pspace->aspace, | |
2200 | bl->address)) | |
e558d7c1 PA |
2201 | { |
2202 | if (debug_infrun) | |
2203 | { | |
2204 | fprintf_unfiltered (gdb_stdlog, | |
2205 | "infrun: skipping breakpoint: " | |
2206 | "stepping past insn at: %s\n", | |
2207 | paddress (bl->gdbarch, bl->address)); | |
2208 | } | |
2209 | return 0; | |
2210 | } | |
31e77af2 | 2211 | |
74960c60 VP |
2212 | return 1; |
2213 | } | |
2214 | ||
934709f0 PW |
2215 | /* Same as should_be_inserted but does the check assuming |
2216 | that the location is not duplicated. */ | |
2217 | ||
2218 | static int | |
2219 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2220 | { | |
2221 | int result; | |
2222 | const int save_duplicate = bl->duplicate; | |
2223 | ||
2224 | bl->duplicate = 0; | |
2225 | result = should_be_inserted (bl); | |
2226 | bl->duplicate = save_duplicate; | |
2227 | return result; | |
2228 | } | |
2229 | ||
b775012e LM |
2230 | /* Parses a conditional described by an expression COND into an |
2231 | agent expression bytecode suitable for evaluation | |
2232 | by the bytecode interpreter. Return NULL if there was | |
2233 | any error during parsing. */ | |
2234 | ||
2235 | static struct agent_expr * | |
2236 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
2237 | { | |
2238 | struct agent_expr *aexpr = NULL; | |
b775012e LM |
2239 | volatile struct gdb_exception ex; |
2240 | ||
2241 | if (!cond) | |
2242 | return NULL; | |
2243 | ||
2244 | /* We don't want to stop processing, so catch any errors | |
2245 | that may show up. */ | |
2246 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2247 | { | |
2248 | aexpr = gen_eval_for_expr (scope, cond); | |
2249 | } | |
2250 | ||
2251 | if (ex.reason < 0) | |
2252 | { | |
2253 | /* If we got here, it means the condition could not be parsed to a valid | |
2254 | bytecode expression and thus can't be evaluated on the target's side. | |
2255 | It's no use iterating through the conditions. */ | |
2256 | return NULL; | |
2257 | } | |
2258 | ||
2259 | /* We have a valid agent expression. */ | |
2260 | return aexpr; | |
2261 | } | |
2262 | ||
2263 | /* Based on location BL, create a list of breakpoint conditions to be | |
2264 | passed on to the target. If we have duplicated locations with different | |
2265 | conditions, we will add such conditions to the list. The idea is that the | |
2266 | target will evaluate the list of conditions and will only notify GDB when | |
2267 | one of them is true. */ | |
2268 | ||
2269 | static void | |
2270 | build_target_condition_list (struct bp_location *bl) | |
2271 | { | |
2272 | struct bp_location **locp = NULL, **loc2p; | |
2273 | int null_condition_or_parse_error = 0; | |
2274 | int modified = bl->needs_update; | |
2275 | struct bp_location *loc; | |
2276 | ||
8b4f3082 PA |
2277 | /* Release conditions left over from a previous insert. */ |
2278 | VEC_free (agent_expr_p, bl->target_info.conditions); | |
2279 | ||
b775012e LM |
2280 | /* This is only meaningful if the target is |
2281 | evaluating conditions and if the user has | |
2282 | opted for condition evaluation on the target's | |
2283 | side. */ | |
2284 | if (gdb_evaluates_breakpoint_condition_p () | |
2285 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2286 | return; | |
2287 | ||
2288 | /* Do a first pass to check for locations with no assigned | |
2289 | conditions or conditions that fail to parse to a valid agent expression | |
2290 | bytecode. If any of these happen, then it's no use to send conditions | |
2291 | to the target since this location will always trigger and generate a | |
2292 | response back to GDB. */ | |
2293 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2294 | { | |
2295 | loc = (*loc2p); | |
2296 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2297 | { | |
2298 | if (modified) | |
2299 | { | |
2300 | struct agent_expr *aexpr; | |
2301 | ||
2302 | /* Re-parse the conditions since something changed. In that | |
2303 | case we already freed the condition bytecodes (see | |
2304 | force_breakpoint_reinsertion). We just | |
2305 | need to parse the condition to bytecodes again. */ | |
2306 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2307 | loc->cond_bytecode = aexpr; | |
2308 | ||
2309 | /* Check if we managed to parse the conditional expression | |
2310 | correctly. If not, we will not send this condition | |
2311 | to the target. */ | |
2312 | if (aexpr) | |
2313 | continue; | |
2314 | } | |
2315 | ||
2316 | /* If we have a NULL bytecode expression, it means something | |
2317 | went wrong or we have a null condition expression. */ | |
2318 | if (!loc->cond_bytecode) | |
2319 | { | |
2320 | null_condition_or_parse_error = 1; | |
2321 | break; | |
2322 | } | |
2323 | } | |
2324 | } | |
2325 | ||
2326 | /* If any of these happened, it means we will have to evaluate the conditions | |
2327 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2328 | for all the other duplicate locations, thus we free all of them here. | |
2329 | ||
2330 | This is so we have a finer control over which locations' conditions are | |
2331 | being evaluated by GDB or the remote stub. */ | |
2332 | if (null_condition_or_parse_error) | |
2333 | { | |
2334 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2335 | { | |
2336 | loc = (*loc2p); | |
2337 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2338 | { | |
2339 | /* Only go as far as the first NULL bytecode is | |
2340 | located. */ | |
2341 | if (!loc->cond_bytecode) | |
2342 | return; | |
2343 | ||
2344 | free_agent_expr (loc->cond_bytecode); | |
2345 | loc->cond_bytecode = NULL; | |
2346 | } | |
2347 | } | |
2348 | } | |
2349 | ||
2350 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2351 | for this location's address. */ | |
2352 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2353 | { | |
2354 | loc = (*loc2p); | |
2355 | if (loc->cond | |
2356 | && is_breakpoint (loc->owner) | |
2357 | && loc->pspace->num == bl->pspace->num | |
2358 | && loc->owner->enable_state == bp_enabled | |
2359 | && loc->enabled) | |
2360 | /* Add the condition to the vector. This will be used later to send the | |
2361 | conditions to the target. */ | |
2362 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2363 | loc->cond_bytecode); | |
2364 | } | |
2365 | ||
2366 | return; | |
2367 | } | |
2368 | ||
d3ce09f5 SS |
2369 | /* Parses a command described by string CMD into an agent expression |
2370 | bytecode suitable for evaluation by the bytecode interpreter. | |
2371 | Return NULL if there was any error during parsing. */ | |
2372 | ||
2373 | static struct agent_expr * | |
2374 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) | |
2375 | { | |
2376 | struct cleanup *old_cleanups = 0; | |
2377 | struct expression *expr, **argvec; | |
2378 | struct agent_expr *aexpr = NULL; | |
d3ce09f5 | 2379 | volatile struct gdb_exception ex; |
bbc13ae3 KS |
2380 | const char *cmdrest; |
2381 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2382 | struct format_piece *fpieces; |
2383 | int nargs; | |
2384 | struct gdbarch *gdbarch = get_current_arch (); | |
2385 | ||
2386 | if (!cmd) | |
2387 | return NULL; | |
2388 | ||
2389 | cmdrest = cmd; | |
2390 | ||
2391 | if (*cmdrest == ',') | |
2392 | ++cmdrest; | |
bbc13ae3 | 2393 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2394 | |
2395 | if (*cmdrest++ != '"') | |
2396 | error (_("No format string following the location")); | |
2397 | ||
2398 | format_start = cmdrest; | |
2399 | ||
2400 | fpieces = parse_format_string (&cmdrest); | |
2401 | ||
2402 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2403 | ||
2404 | format_end = cmdrest; | |
2405 | ||
2406 | if (*cmdrest++ != '"') | |
2407 | error (_("Bad format string, non-terminated '\"'.")); | |
2408 | ||
bbc13ae3 | 2409 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2410 | |
2411 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2412 | error (_("Invalid argument syntax")); | |
2413 | ||
2414 | if (*cmdrest == ',') | |
2415 | cmdrest++; | |
bbc13ae3 | 2416 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2417 | |
2418 | /* For each argument, make an expression. */ | |
2419 | ||
2420 | argvec = (struct expression **) alloca (strlen (cmd) | |
2421 | * sizeof (struct expression *)); | |
2422 | ||
2423 | nargs = 0; | |
2424 | while (*cmdrest != '\0') | |
2425 | { | |
bbc13ae3 | 2426 | const char *cmd1; |
d3ce09f5 SS |
2427 | |
2428 | cmd1 = cmdrest; | |
2429 | expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); | |
2430 | argvec[nargs++] = expr; | |
2431 | cmdrest = cmd1; | |
2432 | if (*cmdrest == ',') | |
2433 | ++cmdrest; | |
2434 | } | |
2435 | ||
2436 | /* We don't want to stop processing, so catch any errors | |
2437 | that may show up. */ | |
2438 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2439 | { | |
2440 | aexpr = gen_printf (scope, gdbarch, 0, 0, | |
2441 | format_start, format_end - format_start, | |
2442 | fpieces, nargs, argvec); | |
2443 | } | |
2444 | ||
752eb8b4 TT |
2445 | do_cleanups (old_cleanups); |
2446 | ||
d3ce09f5 SS |
2447 | if (ex.reason < 0) |
2448 | { | |
2449 | /* If we got here, it means the command could not be parsed to a valid | |
2450 | bytecode expression and thus can't be evaluated on the target's side. | |
2451 | It's no use iterating through the other commands. */ | |
2452 | return NULL; | |
2453 | } | |
2454 | ||
d3ce09f5 SS |
2455 | /* We have a valid agent expression, return it. */ |
2456 | return aexpr; | |
2457 | } | |
2458 | ||
2459 | /* Based on location BL, create a list of breakpoint commands to be | |
2460 | passed on to the target. If we have duplicated locations with | |
2461 | different commands, we will add any such to the list. */ | |
2462 | ||
2463 | static void | |
2464 | build_target_command_list (struct bp_location *bl) | |
2465 | { | |
2466 | struct bp_location **locp = NULL, **loc2p; | |
2467 | int null_command_or_parse_error = 0; | |
2468 | int modified = bl->needs_update; | |
2469 | struct bp_location *loc; | |
2470 | ||
8b4f3082 PA |
2471 | /* Release commands left over from a previous insert. */ |
2472 | VEC_free (agent_expr_p, bl->target_info.tcommands); | |
2473 | ||
41fac0cf | 2474 | if (!target_can_run_breakpoint_commands ()) |
d3ce09f5 SS |
2475 | return; |
2476 | ||
41fac0cf PA |
2477 | /* For now, limit to agent-style dprintf breakpoints. */ |
2478 | if (dprintf_style != dprintf_style_agent) | |
d3ce09f5 SS |
2479 | return; |
2480 | ||
41fac0cf PA |
2481 | /* For now, if we have any duplicate location that isn't a dprintf, |
2482 | don't install the target-side commands, as that would make the | |
2483 | breakpoint not be reported to the core, and we'd lose | |
2484 | control. */ | |
2485 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2486 | { | |
2487 | loc = (*loc2p); | |
2488 | if (is_breakpoint (loc->owner) | |
2489 | && loc->pspace->num == bl->pspace->num | |
2490 | && loc->owner->type != bp_dprintf) | |
2491 | return; | |
2492 | } | |
2493 | ||
d3ce09f5 SS |
2494 | /* Do a first pass to check for locations with no assigned |
2495 | conditions or conditions that fail to parse to a valid agent expression | |
2496 | bytecode. If any of these happen, then it's no use to send conditions | |
2497 | to the target since this location will always trigger and generate a | |
2498 | response back to GDB. */ | |
2499 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2500 | { | |
2501 | loc = (*loc2p); | |
2502 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2503 | { | |
2504 | if (modified) | |
2505 | { | |
2506 | struct agent_expr *aexpr; | |
2507 | ||
2508 | /* Re-parse the commands since something changed. In that | |
2509 | case we already freed the command bytecodes (see | |
2510 | force_breakpoint_reinsertion). We just | |
2511 | need to parse the command to bytecodes again. */ | |
2512 | aexpr = parse_cmd_to_aexpr (bl->address, | |
2513 | loc->owner->extra_string); | |
2514 | loc->cmd_bytecode = aexpr; | |
2515 | ||
2516 | if (!aexpr) | |
2517 | continue; | |
2518 | } | |
2519 | ||
2520 | /* If we have a NULL bytecode expression, it means something | |
2521 | went wrong or we have a null command expression. */ | |
2522 | if (!loc->cmd_bytecode) | |
2523 | { | |
2524 | null_command_or_parse_error = 1; | |
2525 | break; | |
2526 | } | |
2527 | } | |
2528 | } | |
2529 | ||
2530 | /* If anything failed, then we're not doing target-side commands, | |
2531 | and so clean up. */ | |
2532 | if (null_command_or_parse_error) | |
2533 | { | |
2534 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2535 | { | |
2536 | loc = (*loc2p); | |
2537 | if (is_breakpoint (loc->owner) | |
2538 | && loc->pspace->num == bl->pspace->num) | |
2539 | { | |
2540 | /* Only go as far as the first NULL bytecode is | |
2541 | located. */ | |
40fb6c5e | 2542 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2543 | return; |
2544 | ||
40fb6c5e HZ |
2545 | free_agent_expr (loc->cmd_bytecode); |
2546 | loc->cmd_bytecode = NULL; | |
d3ce09f5 SS |
2547 | } |
2548 | } | |
2549 | } | |
2550 | ||
2551 | /* No NULL commands or failed bytecode generation. Build a command list | |
2552 | for this location's address. */ | |
2553 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2554 | { | |
2555 | loc = (*loc2p); | |
2556 | if (loc->owner->extra_string | |
2557 | && is_breakpoint (loc->owner) | |
2558 | && loc->pspace->num == bl->pspace->num | |
2559 | && loc->owner->enable_state == bp_enabled | |
2560 | && loc->enabled) | |
2561 | /* Add the command to the vector. This will be used later | |
2562 | to send the commands to the target. */ | |
2563 | VEC_safe_push (agent_expr_p, bl->target_info.tcommands, | |
2564 | loc->cmd_bytecode); | |
2565 | } | |
2566 | ||
2567 | bl->target_info.persist = 0; | |
2568 | /* Maybe flag this location as persistent. */ | |
2569 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2570 | bl->target_info.persist = 1; | |
2571 | } | |
2572 | ||
35df4500 TJB |
2573 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2574 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2575 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2576 | Returns 0 for success, 1 if the bp_location type is not supported or |
2577 | -1 for failure. | |
879bfdc2 | 2578 | |
4a64f543 MS |
2579 | NOTE drow/2003-09-09: This routine could be broken down to an |
2580 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2581 | static int |
35df4500 | 2582 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2583 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2584 | int *disabled_breaks, |
dd61ec5c MW |
2585 | int *hw_breakpoint_error, |
2586 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2587 | { |
0000e5cc PA |
2588 | enum errors bp_err = GDB_NO_ERROR; |
2589 | const char *bp_err_message = NULL; | |
c90a6fb7 | 2590 | volatile struct gdb_exception e; |
879bfdc2 | 2591 | |
b775012e | 2592 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2593 | return 0; |
2594 | ||
35c63cd8 JB |
2595 | /* Note we don't initialize bl->target_info, as that wipes out |
2596 | the breakpoint location's shadow_contents if the breakpoint | |
2597 | is still inserted at that location. This in turn breaks | |
2598 | target_read_memory which depends on these buffers when | |
2599 | a memory read is requested at the breakpoint location: | |
2600 | Once the target_info has been wiped, we fail to see that | |
2601 | we have a breakpoint inserted at that address and thus | |
2602 | read the breakpoint instead of returning the data saved in | |
2603 | the breakpoint location's shadow contents. */ | |
0d5ed153 | 2604 | bl->target_info.reqstd_address = bl->address; |
35df4500 | 2605 | bl->target_info.placed_address_space = bl->pspace->aspace; |
f1310107 | 2606 | bl->target_info.length = bl->length; |
8181d85f | 2607 | |
b775012e LM |
2608 | /* When working with target-side conditions, we must pass all the conditions |
2609 | for the same breakpoint address down to the target since GDB will not | |
2610 | insert those locations. With a list of breakpoint conditions, the target | |
2611 | can decide when to stop and notify GDB. */ | |
2612 | ||
2613 | if (is_breakpoint (bl->owner)) | |
2614 | { | |
2615 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2616 | build_target_command_list (bl); |
2617 | /* Reset the modification marker. */ | |
b775012e LM |
2618 | bl->needs_update = 0; |
2619 | } | |
2620 | ||
35df4500 TJB |
2621 | if (bl->loc_type == bp_loc_software_breakpoint |
2622 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2623 | { |
35df4500 | 2624 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2625 | { |
2626 | /* If the explicitly specified breakpoint type | |
2627 | is not hardware breakpoint, check the memory map to see | |
2628 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2629 | |
765dc015 VP |
2630 | Two important cases are: |
2631 | - location type is not hardware breakpoint, memory | |
2632 | is readonly. We change the type of the location to | |
2633 | hardware breakpoint. | |
4a64f543 MS |
2634 | - location type is hardware breakpoint, memory is |
2635 | read-write. This means we've previously made the | |
2636 | location hardware one, but then the memory map changed, | |
2637 | so we undo. | |
765dc015 | 2638 | |
4a64f543 MS |
2639 | When breakpoints are removed, remove_breakpoints will use |
2640 | location types we've just set here, the only possible | |
2641 | problem is that memory map has changed during running | |
2642 | program, but it's not going to work anyway with current | |
2643 | gdb. */ | |
765dc015 | 2644 | struct mem_region *mr |
0d5ed153 | 2645 | = lookup_mem_region (bl->target_info.reqstd_address); |
765dc015 VP |
2646 | |
2647 | if (mr) | |
2648 | { | |
2649 | if (automatic_hardware_breakpoints) | |
2650 | { | |
765dc015 VP |
2651 | enum bp_loc_type new_type; |
2652 | ||
2653 | if (mr->attrib.mode != MEM_RW) | |
2654 | new_type = bp_loc_hardware_breakpoint; | |
2655 | else | |
2656 | new_type = bp_loc_software_breakpoint; | |
2657 | ||
35df4500 | 2658 | if (new_type != bl->loc_type) |
765dc015 VP |
2659 | { |
2660 | static int said = 0; | |
cc59ec59 | 2661 | |
35df4500 | 2662 | bl->loc_type = new_type; |
765dc015 VP |
2663 | if (!said) |
2664 | { | |
3e43a32a MS |
2665 | fprintf_filtered (gdb_stdout, |
2666 | _("Note: automatically using " | |
2667 | "hardware breakpoints for " | |
2668 | "read-only addresses.\n")); | |
765dc015 VP |
2669 | said = 1; |
2670 | } | |
2671 | } | |
2672 | } | |
35df4500 | 2673 | else if (bl->loc_type == bp_loc_software_breakpoint |
0fec99e8 PA |
2674 | && mr->attrib.mode != MEM_RW) |
2675 | { | |
2676 | fprintf_unfiltered (tmp_error_stream, | |
2677 | _("Cannot insert breakpoint %d.\n" | |
2678 | "Cannot set software breakpoint " | |
2679 | "at read-only address %s\n"), | |
2680 | bl->owner->number, | |
2681 | paddress (bl->gdbarch, bl->address)); | |
2682 | return 1; | |
2683 | } | |
765dc015 VP |
2684 | } |
2685 | } | |
2686 | ||
879bfdc2 DJ |
2687 | /* First check to see if we have to handle an overlay. */ |
2688 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2689 | || bl->section == NULL |
2690 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2691 | { |
2692 | /* No overlay handling: just set the breakpoint. */ | |
dd61ec5c MW |
2693 | TRY_CATCH (e, RETURN_MASK_ALL) |
2694 | { | |
0000e5cc PA |
2695 | int val; |
2696 | ||
dd61ec5c | 2697 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2698 | if (val) |
2699 | bp_err = GENERIC_ERROR; | |
dd61ec5c MW |
2700 | } |
2701 | if (e.reason < 0) | |
2702 | { | |
0000e5cc PA |
2703 | bp_err = e.error; |
2704 | bp_err_message = e.message; | |
dd61ec5c | 2705 | } |
879bfdc2 DJ |
2706 | } |
2707 | else | |
2708 | { | |
4a64f543 | 2709 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2710 | Shall we set a breakpoint at the LMA? */ |
2711 | if (!overlay_events_enabled) | |
2712 | { | |
2713 | /* Yes -- overlay event support is not active, | |
2714 | so we must try to set a breakpoint at the LMA. | |
2715 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2716 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2717 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2718 | bl->owner->number); |
879bfdc2 DJ |
2719 | else |
2720 | { | |
35df4500 TJB |
2721 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2722 | bl->section); | |
879bfdc2 | 2723 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 | 2724 | bl->overlay_target_info = bl->target_info; |
0d5ed153 | 2725 | bl->overlay_target_info.reqstd_address = addr; |
0000e5cc PA |
2726 | |
2727 | /* No overlay handling: just set the breakpoint. */ | |
2728 | TRY_CATCH (e, RETURN_MASK_ALL) | |
2729 | { | |
2730 | int val; | |
2731 | ||
2732 | val = target_insert_breakpoint (bl->gdbarch, | |
2733 | &bl->overlay_target_info); | |
2734 | if (val) | |
2735 | bp_err = GENERIC_ERROR; | |
2736 | } | |
2737 | if (e.reason < 0) | |
2738 | { | |
2739 | bp_err = e.error; | |
2740 | bp_err_message = e.message; | |
2741 | } | |
2742 | ||
2743 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2744 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2745 | "Overlay breakpoint %d " |
2746 | "failed: in ROM?\n", | |
35df4500 | 2747 | bl->owner->number); |
879bfdc2 DJ |
2748 | } |
2749 | } | |
2750 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2751 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2752 | { |
2753 | /* Yes. This overlay section is mapped into memory. */ | |
dd61ec5c MW |
2754 | TRY_CATCH (e, RETURN_MASK_ALL) |
2755 | { | |
0000e5cc PA |
2756 | int val; |
2757 | ||
dd61ec5c | 2758 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2759 | if (val) |
2760 | bp_err = GENERIC_ERROR; | |
dd61ec5c MW |
2761 | } |
2762 | if (e.reason < 0) | |
2763 | { | |
0000e5cc PA |
2764 | bp_err = e.error; |
2765 | bp_err_message = e.message; | |
dd61ec5c | 2766 | } |
879bfdc2 DJ |
2767 | } |
2768 | else | |
2769 | { | |
2770 | /* No. This breakpoint will not be inserted. | |
2771 | No error, but do not mark the bp as 'inserted'. */ | |
2772 | return 0; | |
2773 | } | |
2774 | } | |
2775 | ||
0000e5cc | 2776 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2777 | { |
2778 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2779 | |
2780 | /* In some cases, we might not be able to insert a | |
2781 | breakpoint in a shared library that has already been | |
2782 | removed, but we have not yet processed the shlib unload | |
2783 | event. Unfortunately, some targets that implement | |
076855f9 PA |
2784 | breakpoint insertion themselves can't tell why the |
2785 | breakpoint insertion failed (e.g., the remote target | |
2786 | doesn't define error codes), so we must treat generic | |
2787 | errors as memory errors. */ | |
0000e5cc | 2788 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) |
076855f9 | 2789 | && bl->loc_type == bp_loc_software_breakpoint |
08351840 | 2790 | && (solib_name_from_address (bl->pspace, bl->address) |
d03de421 PA |
2791 | || shared_objfile_contains_address_p (bl->pspace, |
2792 | bl->address))) | |
879bfdc2 | 2793 | { |
4a64f543 | 2794 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2795 | bl->shlib_disabled = 1; |
8d3788bd | 2796 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2797 | if (!*disabled_breaks) |
2798 | { | |
2799 | fprintf_unfiltered (tmp_error_stream, | |
2800 | "Cannot insert breakpoint %d.\n", | |
2801 | bl->owner->number); | |
2802 | fprintf_unfiltered (tmp_error_stream, | |
2803 | "Temporarily disabling shared " | |
2804 | "library breakpoints:\n"); | |
2805 | } | |
2806 | *disabled_breaks = 1; | |
879bfdc2 | 2807 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2808 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2809 | return 0; |
879bfdc2 DJ |
2810 | } |
2811 | else | |
879bfdc2 | 2812 | { |
35df4500 | 2813 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2814 | { |
0000e5cc PA |
2815 | *hw_breakpoint_error = 1; |
2816 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2817 | fprintf_unfiltered (tmp_error_stream, |
2818 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2819 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2820 | if (bp_err_message != NULL) | |
2821 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2822 | } |
2823 | else | |
2824 | { | |
0000e5cc PA |
2825 | if (bp_err_message == NULL) |
2826 | { | |
2827 | char *message | |
2828 | = memory_error_message (TARGET_XFER_E_IO, | |
2829 | bl->gdbarch, bl->address); | |
2830 | struct cleanup *old_chain = make_cleanup (xfree, message); | |
2831 | ||
2832 | fprintf_unfiltered (tmp_error_stream, | |
2833 | "Cannot insert breakpoint %d.\n" | |
2834 | "%s\n", | |
2835 | bl->owner->number, message); | |
2836 | do_cleanups (old_chain); | |
2837 | } | |
2838 | else | |
2839 | { | |
2840 | fprintf_unfiltered (tmp_error_stream, | |
2841 | "Cannot insert breakpoint %d: %s\n", | |
2842 | bl->owner->number, | |
2843 | bp_err_message); | |
2844 | } | |
879bfdc2 | 2845 | } |
0000e5cc | 2846 | return 1; |
879bfdc2 DJ |
2847 | |
2848 | } | |
2849 | } | |
2850 | else | |
35df4500 | 2851 | bl->inserted = 1; |
879bfdc2 | 2852 | |
0000e5cc | 2853 | return 0; |
879bfdc2 DJ |
2854 | } |
2855 | ||
35df4500 | 2856 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2857 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2858 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2859 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2860 | { |
0000e5cc PA |
2861 | int val; |
2862 | ||
77b06cd7 TJB |
2863 | gdb_assert (bl->owner->ops != NULL |
2864 | && bl->owner->ops->insert_location != NULL); | |
2865 | ||
2866 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2867 | |
2868 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2869 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2870 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2871 | { |
2872 | struct bp_location *loc, **loc_temp; | |
2873 | ||
2874 | /* But don't try to insert it, if there's already another | |
2875 | hw_access location that would be considered a duplicate | |
2876 | of this one. */ | |
2877 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2878 | if (loc != bl |
85d721b8 | 2879 | && loc->watchpoint_type == hw_access |
35df4500 | 2880 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2881 | { |
35df4500 TJB |
2882 | bl->duplicate = 1; |
2883 | bl->inserted = 1; | |
2884 | bl->target_info = loc->target_info; | |
2885 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2886 | val = 0; |
2887 | break; | |
2888 | } | |
2889 | ||
2890 | if (val == 1) | |
2891 | { | |
77b06cd7 TJB |
2892 | bl->watchpoint_type = hw_access; |
2893 | val = bl->owner->ops->insert_location (bl); | |
2894 | ||
2895 | if (val) | |
2896 | /* Back to the original value. */ | |
2897 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2898 | } |
2899 | } | |
2900 | ||
35df4500 | 2901 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2902 | } |
2903 | ||
35df4500 | 2904 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2905 | { |
0000e5cc PA |
2906 | int val; |
2907 | ||
77b06cd7 TJB |
2908 | gdb_assert (bl->owner->ops != NULL |
2909 | && bl->owner->ops->insert_location != NULL); | |
2910 | ||
2911 | val = bl->owner->ops->insert_location (bl); | |
2912 | if (val) | |
2913 | { | |
2914 | bl->owner->enable_state = bp_disabled; | |
2915 | ||
2916 | if (val == 1) | |
2917 | warning (_("\ | |
2918 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2919 | of catchpoint."), bl->owner->number); | |
2920 | else | |
2921 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2922 | } | |
2923 | ||
2924 | bl->inserted = (val == 0); | |
1640b821 DJ |
2925 | |
2926 | /* We've already printed an error message if there was a problem | |
2927 | inserting this catchpoint, and we've disabled the catchpoint, | |
2928 | so just return success. */ | |
2929 | return 0; | |
879bfdc2 DJ |
2930 | } |
2931 | ||
2932 | return 0; | |
2933 | } | |
2934 | ||
6c95b8df PA |
2935 | /* This function is called when program space PSPACE is about to be |
2936 | deleted. It takes care of updating breakpoints to not reference | |
2937 | PSPACE anymore. */ | |
2938 | ||
2939 | void | |
2940 | breakpoint_program_space_exit (struct program_space *pspace) | |
2941 | { | |
2942 | struct breakpoint *b, *b_temp; | |
876fa593 | 2943 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2944 | |
2945 | /* Remove any breakpoint that was set through this program space. */ | |
2946 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2947 | { | |
2948 | if (b->pspace == pspace) | |
2949 | delete_breakpoint (b); | |
2950 | } | |
2951 | ||
2952 | /* Breakpoints set through other program spaces could have locations | |
2953 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2954 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2955 | { |
2956 | struct bp_location *tmp; | |
2957 | ||
2958 | if (loc->pspace == pspace) | |
2959 | { | |
2bdf28a0 | 2960 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2961 | if (loc->owner->loc == loc) |
2962 | loc->owner->loc = loc->next; | |
2963 | else | |
2964 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2965 | if (tmp->next == loc) | |
2966 | { | |
2967 | tmp->next = loc->next; | |
2968 | break; | |
2969 | } | |
2970 | } | |
2971 | } | |
2972 | ||
2973 | /* Now update the global location list to permanently delete the | |
2974 | removed locations above. */ | |
44702360 | 2975 | update_global_location_list (UGLL_DONT_INSERT); |
6c95b8df PA |
2976 | } |
2977 | ||
74960c60 VP |
2978 | /* Make sure all breakpoints are inserted in inferior. |
2979 | Throws exception on any error. | |
2980 | A breakpoint that is already inserted won't be inserted | |
2981 | again, so calling this function twice is safe. */ | |
2982 | void | |
2983 | insert_breakpoints (void) | |
2984 | { | |
2985 | struct breakpoint *bpt; | |
2986 | ||
2987 | ALL_BREAKPOINTS (bpt) | |
2988 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2989 | { |
2990 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2991 | ||
2992 | update_watchpoint (w, 0 /* don't reparse. */); | |
2993 | } | |
74960c60 | 2994 | |
04086b45 PA |
2995 | /* Updating watchpoints creates new locations, so update the global |
2996 | location list. Explicitly tell ugll to insert locations and | |
2997 | ignore breakpoints_always_inserted_mode. */ | |
2998 | update_global_location_list (UGLL_INSERT); | |
74960c60 VP |
2999 | } |
3000 | ||
20388dd6 YQ |
3001 | /* Invoke CALLBACK for each of bp_location. */ |
3002 | ||
3003 | void | |
3004 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
3005 | { | |
3006 | struct bp_location *loc, **loc_tmp; | |
3007 | ||
3008 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
3009 | { | |
3010 | callback (loc, NULL); | |
3011 | } | |
3012 | } | |
3013 | ||
b775012e LM |
3014 | /* This is used when we need to synch breakpoint conditions between GDB and the |
3015 | target. It is the case with deleting and disabling of breakpoints when using | |
3016 | always-inserted mode. */ | |
3017 | ||
3018 | static void | |
3019 | update_inserted_breakpoint_locations (void) | |
3020 | { | |
3021 | struct bp_location *bl, **blp_tmp; | |
3022 | int error_flag = 0; | |
3023 | int val = 0; | |
3024 | int disabled_breaks = 0; | |
3025 | int hw_breakpoint_error = 0; | |
dd61ec5c | 3026 | int hw_bp_details_reported = 0; |
b775012e LM |
3027 | |
3028 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
3029 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
3030 | ||
3031 | /* Explicitly mark the warning -- this will only be printed if | |
3032 | there was an error. */ | |
3033 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
3034 | ||
3035 | save_current_space_and_thread (); | |
3036 | ||
3037 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
3038 | { | |
3039 | /* We only want to update software breakpoints and hardware | |
3040 | breakpoints. */ | |
3041 | if (!is_breakpoint (bl->owner)) | |
3042 | continue; | |
3043 | ||
3044 | /* We only want to update locations that are already inserted | |
3045 | and need updating. This is to avoid unwanted insertion during | |
3046 | deletion of breakpoints. */ | |
3047 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
3048 | continue; | |
3049 | ||
3050 | switch_to_program_space_and_thread (bl->pspace); | |
3051 | ||
3052 | /* For targets that support global breakpoints, there's no need | |
3053 | to select an inferior to insert breakpoint to. In fact, even | |
3054 | if we aren't attached to any process yet, we should still | |
3055 | insert breakpoints. */ | |
f5656ead | 3056 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
3057 | && ptid_equal (inferior_ptid, null_ptid)) |
3058 | continue; | |
3059 | ||
3060 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
dd61ec5c | 3061 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
3062 | if (val) |
3063 | error_flag = val; | |
3064 | } | |
3065 | ||
3066 | if (error_flag) | |
3067 | { | |
3068 | target_terminal_ours_for_output (); | |
3069 | error_stream (tmp_error_stream); | |
3070 | } | |
3071 | ||
3072 | do_cleanups (cleanups); | |
3073 | } | |
3074 | ||
c30eee59 | 3075 | /* Used when starting or continuing the program. */ |
c906108c | 3076 | |
74960c60 VP |
3077 | static void |
3078 | insert_breakpoint_locations (void) | |
c906108c | 3079 | { |
a5606eee | 3080 | struct breakpoint *bpt; |
35df4500 | 3081 | struct bp_location *bl, **blp_tmp; |
eacd795a | 3082 | int error_flag = 0; |
c906108c | 3083 | int val = 0; |
3fbb6ffa | 3084 | int disabled_breaks = 0; |
81d0cc19 | 3085 | int hw_breakpoint_error = 0; |
dd61ec5c | 3086 | int hw_bp_error_explained_already = 0; |
c906108c | 3087 | |
81d0cc19 | 3088 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 3089 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 3090 | |
81d0cc19 GS |
3091 | /* Explicitly mark the warning -- this will only be printed if |
3092 | there was an error. */ | |
3093 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
3094 | |
3095 | save_current_space_and_thread (); | |
3096 | ||
35df4500 | 3097 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 3098 | { |
b775012e | 3099 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
3100 | continue; |
3101 | ||
4a64f543 MS |
3102 | /* There is no point inserting thread-specific breakpoints if |
3103 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
3104 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
3105 | if (bl->owner->thread != -1 |
3106 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
3107 | continue; |
3108 | ||
35df4500 | 3109 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
3110 | |
3111 | /* For targets that support global breakpoints, there's no need | |
3112 | to select an inferior to insert breakpoint to. In fact, even | |
3113 | if we aren't attached to any process yet, we should still | |
3114 | insert breakpoints. */ | |
f5656ead | 3115 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
3116 | && ptid_equal (inferior_ptid, null_ptid)) |
3117 | continue; | |
3118 | ||
3fbb6ffa | 3119 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
dd61ec5c | 3120 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 3121 | if (val) |
eacd795a | 3122 | error_flag = val; |
879bfdc2 | 3123 | } |
c906108c | 3124 | |
4a64f543 MS |
3125 | /* If we failed to insert all locations of a watchpoint, remove |
3126 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
3127 | ALL_BREAKPOINTS (bpt) |
3128 | { | |
3129 | int some_failed = 0; | |
3130 | struct bp_location *loc; | |
3131 | ||
3132 | if (!is_hardware_watchpoint (bpt)) | |
3133 | continue; | |
3134 | ||
d6b74ac4 | 3135 | if (!breakpoint_enabled (bpt)) |
a5606eee | 3136 | continue; |
74960c60 VP |
3137 | |
3138 | if (bpt->disposition == disp_del_at_next_stop) | |
3139 | continue; | |
a5606eee VP |
3140 | |
3141 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3142 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3143 | { |
3144 | some_failed = 1; | |
3145 | break; | |
3146 | } | |
3147 | if (some_failed) | |
3148 | { | |
3149 | for (loc = bpt->loc; loc; loc = loc->next) | |
3150 | if (loc->inserted) | |
3151 | remove_breakpoint (loc, mark_uninserted); | |
3152 | ||
3153 | hw_breakpoint_error = 1; | |
3154 | fprintf_unfiltered (tmp_error_stream, | |
3155 | "Could not insert hardware watchpoint %d.\n", | |
3156 | bpt->number); | |
eacd795a | 3157 | error_flag = -1; |
a5606eee VP |
3158 | } |
3159 | } | |
3160 | ||
eacd795a | 3161 | if (error_flag) |
81d0cc19 GS |
3162 | { |
3163 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3164 | message about possibly exhausted resources. */ | |
dd61ec5c | 3165 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3166 | { |
c6510018 MS |
3167 | fprintf_unfiltered (tmp_error_stream, |
3168 | "Could not insert hardware breakpoints:\n\ | |
3169 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 3170 | } |
81d0cc19 GS |
3171 | target_terminal_ours_for_output (); |
3172 | error_stream (tmp_error_stream); | |
3173 | } | |
f7545552 TT |
3174 | |
3175 | do_cleanups (cleanups); | |
c906108c SS |
3176 | } |
3177 | ||
c30eee59 TJB |
3178 | /* Used when the program stops. |
3179 | Returns zero if successful, or non-zero if there was a problem | |
3180 | removing a breakpoint location. */ | |
3181 | ||
c906108c | 3182 | int |
fba45db2 | 3183 | remove_breakpoints (void) |
c906108c | 3184 | { |
35df4500 | 3185 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3186 | int val = 0; |
c906108c | 3187 | |
35df4500 | 3188 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3189 | { |
1e4d1764 | 3190 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 3191 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 3192 | } |
3a1bae8e | 3193 | return val; |
c906108c SS |
3194 | } |
3195 | ||
49fa26b0 PA |
3196 | /* When a thread exits, remove breakpoints that are related to |
3197 | that thread. */ | |
3198 | ||
3199 | static void | |
3200 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3201 | { | |
3202 | struct breakpoint *b, *b_tmp; | |
3203 | ||
3204 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3205 | { | |
96181529 | 3206 | if (b->thread == tp->num && user_breakpoint_p (b)) |
49fa26b0 PA |
3207 | { |
3208 | b->disposition = disp_del_at_next_stop; | |
3209 | ||
3210 | printf_filtered (_("\ | |
46ecd527 | 3211 | Thread-specific breakpoint %d deleted - thread %d no longer in the thread list.\n"), |
49fa26b0 PA |
3212 | b->number, tp->num); |
3213 | ||
3214 | /* Hide it from the user. */ | |
3215 | b->number = 0; | |
3216 | } | |
3217 | } | |
3218 | } | |
3219 | ||
6c95b8df PA |
3220 | /* Remove breakpoints of process PID. */ |
3221 | ||
3222 | int | |
3223 | remove_breakpoints_pid (int pid) | |
3224 | { | |
35df4500 | 3225 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3226 | int val; |
3227 | struct inferior *inf = find_inferior_pid (pid); | |
3228 | ||
35df4500 | 3229 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3230 | { |
35df4500 | 3231 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3232 | continue; |
3233 | ||
d3ce09f5 SS |
3234 | if (bl->owner->type == bp_dprintf) |
3235 | continue; | |
3236 | ||
35df4500 | 3237 | if (bl->inserted) |
6c95b8df | 3238 | { |
35df4500 | 3239 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
3240 | if (val != 0) |
3241 | return val; | |
3242 | } | |
3243 | } | |
3244 | return 0; | |
3245 | } | |
3246 | ||
c906108c | 3247 | int |
fba45db2 | 3248 | reattach_breakpoints (int pid) |
c906108c | 3249 | { |
6c95b8df | 3250 | struct cleanup *old_chain; |
35df4500 | 3251 | struct bp_location *bl, **blp_tmp; |
c906108c | 3252 | int val; |
86b887df | 3253 | struct ui_file *tmp_error_stream; |
dd61ec5c | 3254 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
3255 | struct inferior *inf; |
3256 | struct thread_info *tp; | |
3257 | ||
3258 | tp = any_live_thread_of_process (pid); | |
3259 | if (tp == NULL) | |
3260 | return 1; | |
3261 | ||
3262 | inf = find_inferior_pid (pid); | |
3263 | old_chain = save_inferior_ptid (); | |
3264 | ||
3265 | inferior_ptid = tp->ptid; | |
a4954f26 | 3266 | |
86b887df | 3267 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 3268 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 3269 | |
35df4500 | 3270 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3271 | { |
35df4500 | 3272 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3273 | continue; |
3274 | ||
35df4500 | 3275 | if (bl->inserted) |
c5aa993b | 3276 | { |
35df4500 | 3277 | bl->inserted = 0; |
dd61ec5c | 3278 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b JM |
3279 | if (val != 0) |
3280 | { | |
ce696e05 | 3281 | do_cleanups (old_chain); |
c5aa993b JM |
3282 | return val; |
3283 | } | |
3284 | } | |
3285 | } | |
ce696e05 | 3286 | do_cleanups (old_chain); |
c906108c SS |
3287 | return 0; |
3288 | } | |
3289 | ||
e58b0e63 PA |
3290 | static int internal_breakpoint_number = -1; |
3291 | ||
84f4c1fe PM |
3292 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3293 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3294 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3295 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3296 | breakpoint_count and that value incremented. Internal breakpoints |
3297 | do not set the internal var bpnum. */ | |
3298 | static void | |
3299 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3300 | { | |
3301 | if (internal) | |
3302 | b->number = internal_breakpoint_number--; | |
3303 | else | |
3304 | { | |
3305 | set_breakpoint_count (breakpoint_count + 1); | |
3306 | b->number = breakpoint_count; | |
3307 | } | |
3308 | } | |
3309 | ||
e62c965a | 3310 | static struct breakpoint * |
a6d9a66e | 3311 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3312 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3313 | const struct breakpoint_ops *ops) |
e62c965a | 3314 | { |
e62c965a PP |
3315 | struct symtab_and_line sal; |
3316 | struct breakpoint *b; | |
3317 | ||
4a64f543 | 3318 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3319 | |
3320 | sal.pc = address; | |
3321 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3322 | sal.pspace = current_program_space; |
e62c965a | 3323 | |
06edf0c0 | 3324 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3325 | b->number = internal_breakpoint_number--; |
3326 | b->disposition = disp_donttouch; | |
3327 | ||
3328 | return b; | |
3329 | } | |
3330 | ||
17450429 PP |
3331 | static const char *const longjmp_names[] = |
3332 | { | |
3333 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3334 | }; | |
3335 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3336 | ||
3337 | /* Per-objfile data private to breakpoint.c. */ | |
3338 | struct breakpoint_objfile_data | |
3339 | { | |
3340 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3b7344d5 | 3341 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3342 | |
3343 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3b7344d5 | 3344 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3345 | |
28106bc2 SDJ |
3346 | /* True if we have looked for longjmp probes. */ |
3347 | int longjmp_searched; | |
3348 | ||
3349 | /* SystemTap probe points for longjmp (if any). */ | |
3350 | VEC (probe_p) *longjmp_probes; | |
3351 | ||
17450429 | 3352 | /* Minimal symbol for "std::terminate()" (if any). */ |
3b7344d5 | 3353 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3354 | |
3355 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3b7344d5 | 3356 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3357 | |
3358 | /* True if we have looked for exception probes. */ | |
3359 | int exception_searched; | |
3360 | ||
3361 | /* SystemTap probe points for unwinding (if any). */ | |
3362 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3363 | }; |
3364 | ||
3365 | static const struct objfile_data *breakpoint_objfile_key; | |
3366 | ||
3367 | /* Minimal symbol not found sentinel. */ | |
3368 | static struct minimal_symbol msym_not_found; | |
3369 | ||
3370 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3371 | ||
3372 | static int | |
3373 | msym_not_found_p (const struct minimal_symbol *msym) | |
3374 | { | |
3375 | return msym == &msym_not_found; | |
3376 | } | |
3377 | ||
3378 | /* Return per-objfile data needed by breakpoint.c. | |
3379 | Allocate the data if necessary. */ | |
3380 | ||
3381 | static struct breakpoint_objfile_data * | |
3382 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3383 | { | |
3384 | struct breakpoint_objfile_data *bp_objfile_data; | |
3385 | ||
3386 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
3387 | if (bp_objfile_data == NULL) | |
3388 | { | |
3389 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
3390 | sizeof (*bp_objfile_data)); | |
3391 | ||
3392 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3393 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3394 | } | |
3395 | return bp_objfile_data; | |
3396 | } | |
3397 | ||
28106bc2 SDJ |
3398 | static void |
3399 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3400 | { | |
3401 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
3402 | ||
3403 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3404 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3405 | } | |
3406 | ||
e62c965a | 3407 | static void |
af02033e | 3408 | create_overlay_event_breakpoint (void) |
e62c965a | 3409 | { |
69de3c6a | 3410 | struct objfile *objfile; |
af02033e | 3411 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3412 | |
69de3c6a PP |
3413 | ALL_OBJFILES (objfile) |
3414 | { | |
3415 | struct breakpoint *b; | |
17450429 PP |
3416 | struct breakpoint_objfile_data *bp_objfile_data; |
3417 | CORE_ADDR addr; | |
69de3c6a | 3418 | |
17450429 PP |
3419 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3420 | ||
3b7344d5 | 3421 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3422 | continue; |
3423 | ||
3b7344d5 | 3424 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3425 | { |
3b7344d5 | 3426 | struct bound_minimal_symbol m; |
17450429 PP |
3427 | |
3428 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3429 | if (m.minsym == NULL) |
17450429 PP |
3430 | { |
3431 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3432 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3433 | continue; |
3434 | } | |
3435 | bp_objfile_data->overlay_msym = m; | |
3436 | } | |
e62c965a | 3437 | |
77e371c0 | 3438 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3439 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3440 | bp_overlay_event, |
3441 | &internal_breakpoint_ops); | |
69de3c6a | 3442 | b->addr_string = xstrdup (func_name); |
e62c965a | 3443 | |
69de3c6a PP |
3444 | if (overlay_debugging == ovly_auto) |
3445 | { | |
3446 | b->enable_state = bp_enabled; | |
3447 | overlay_events_enabled = 1; | |
3448 | } | |
3449 | else | |
3450 | { | |
3451 | b->enable_state = bp_disabled; | |
3452 | overlay_events_enabled = 0; | |
3453 | } | |
e62c965a | 3454 | } |
44702360 | 3455 | update_global_location_list (UGLL_MAY_INSERT); |
e62c965a PP |
3456 | } |
3457 | ||
0fd8e87f | 3458 | static void |
af02033e | 3459 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3460 | { |
6c95b8df | 3461 | struct program_space *pspace; |
6c95b8df PA |
3462 | struct cleanup *old_chain; |
3463 | ||
3464 | old_chain = save_current_program_space (); | |
0fd8e87f | 3465 | |
6c95b8df | 3466 | ALL_PSPACES (pspace) |
af02033e PP |
3467 | { |
3468 | struct objfile *objfile; | |
3469 | ||
3470 | set_current_program_space (pspace); | |
3471 | ||
3472 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3473 | { |
af02033e PP |
3474 | int i; |
3475 | struct gdbarch *gdbarch; | |
17450429 | 3476 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3477 | |
af02033e | 3478 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3479 | |
17450429 PP |
3480 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3481 | ||
28106bc2 SDJ |
3482 | if (!bp_objfile_data->longjmp_searched) |
3483 | { | |
25f9533e SDJ |
3484 | VEC (probe_p) *ret; |
3485 | ||
3486 | ret = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3487 | if (ret != NULL) | |
3488 | { | |
3489 | /* We are only interested in checking one element. */ | |
3490 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3491 | ||
3492 | if (!can_evaluate_probe_arguments (p)) | |
3493 | { | |
3494 | /* We cannot use the probe interface here, because it does | |
3495 | not know how to evaluate arguments. */ | |
3496 | VEC_free (probe_p, ret); | |
3497 | ret = NULL; | |
3498 | } | |
3499 | } | |
3500 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3501 | bp_objfile_data->longjmp_searched = 1; |
3502 | } | |
3503 | ||
3504 | if (bp_objfile_data->longjmp_probes != NULL) | |
3505 | { | |
3506 | int i; | |
3507 | struct probe *probe; | |
3508 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3509 | ||
3510 | for (i = 0; | |
3511 | VEC_iterate (probe_p, | |
3512 | bp_objfile_data->longjmp_probes, | |
3513 | i, probe); | |
3514 | ++i) | |
3515 | { | |
3516 | struct breakpoint *b; | |
3517 | ||
729662a5 TT |
3518 | b = create_internal_breakpoint (gdbarch, |
3519 | get_probe_address (probe, | |
3520 | objfile), | |
28106bc2 SDJ |
3521 | bp_longjmp_master, |
3522 | &internal_breakpoint_ops); | |
3523 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
3524 | b->enable_state = bp_disabled; | |
3525 | } | |
3526 | ||
3527 | continue; | |
3528 | } | |
3529 | ||
0569175e TSD |
3530 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3531 | continue; | |
3532 | ||
17450429 | 3533 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3534 | { |
3535 | struct breakpoint *b; | |
af02033e | 3536 | const char *func_name; |
17450429 | 3537 | CORE_ADDR addr; |
6c95b8df | 3538 | |
3b7344d5 | 3539 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3540 | continue; |
0fd8e87f | 3541 | |
17450429 | 3542 | func_name = longjmp_names[i]; |
3b7344d5 | 3543 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3544 | { |
3b7344d5 | 3545 | struct bound_minimal_symbol m; |
17450429 PP |
3546 | |
3547 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3548 | if (m.minsym == NULL) |
17450429 PP |
3549 | { |
3550 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3551 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3552 | continue; |
3553 | } | |
3554 | bp_objfile_data->longjmp_msym[i] = m; | |
3555 | } | |
3556 | ||
77e371c0 | 3557 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3558 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3559 | &internal_breakpoint_ops); | |
af02033e PP |
3560 | b->addr_string = xstrdup (func_name); |
3561 | b->enable_state = bp_disabled; | |
3562 | } | |
0fd8e87f | 3563 | } |
af02033e | 3564 | } |
44702360 | 3565 | update_global_location_list (UGLL_MAY_INSERT); |
6c95b8df PA |
3566 | |
3567 | do_cleanups (old_chain); | |
0fd8e87f UW |
3568 | } |
3569 | ||
af02033e | 3570 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3571 | static void |
af02033e | 3572 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3573 | { |
3574 | struct program_space *pspace; | |
aa7d318d | 3575 | struct cleanup *old_chain; |
af02033e | 3576 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3577 | |
3578 | old_chain = save_current_program_space (); | |
3579 | ||
3580 | ALL_PSPACES (pspace) | |
17450429 PP |
3581 | { |
3582 | struct objfile *objfile; | |
3583 | CORE_ADDR addr; | |
3584 | ||
3585 | set_current_program_space (pspace); | |
3586 | ||
aa7d318d TT |
3587 | ALL_OBJFILES (objfile) |
3588 | { | |
3589 | struct breakpoint *b; | |
17450429 | 3590 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 3591 | |
17450429 | 3592 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3593 | |
3b7344d5 | 3594 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3595 | continue; |
3596 | ||
3b7344d5 | 3597 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3598 | { |
3b7344d5 | 3599 | struct bound_minimal_symbol m; |
17450429 PP |
3600 | |
3601 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3602 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3603 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3604 | { |
3605 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3606 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3607 | continue; |
3608 | } | |
3609 | bp_objfile_data->terminate_msym = m; | |
3610 | } | |
aa7d318d | 3611 | |
77e371c0 | 3612 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3613 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3614 | bp_std_terminate_master, |
3615 | &internal_breakpoint_ops); | |
aa7d318d TT |
3616 | b->addr_string = xstrdup (func_name); |
3617 | b->enable_state = bp_disabled; | |
3618 | } | |
17450429 PP |
3619 | } |
3620 | ||
44702360 | 3621 | update_global_location_list (UGLL_MAY_INSERT); |
aa7d318d TT |
3622 | |
3623 | do_cleanups (old_chain); | |
3624 | } | |
3625 | ||
186c406b TT |
3626 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3627 | ||
70221824 | 3628 | static void |
186c406b TT |
3629 | create_exception_master_breakpoint (void) |
3630 | { | |
3631 | struct objfile *objfile; | |
17450429 | 3632 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3633 | |
3634 | ALL_OBJFILES (objfile) | |
3635 | { | |
17450429 PP |
3636 | struct breakpoint *b; |
3637 | struct gdbarch *gdbarch; | |
3638 | struct breakpoint_objfile_data *bp_objfile_data; | |
3639 | CORE_ADDR addr; | |
3640 | ||
3641 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3642 | ||
28106bc2 SDJ |
3643 | /* We prefer the SystemTap probe point if it exists. */ |
3644 | if (!bp_objfile_data->exception_searched) | |
3645 | { | |
25f9533e SDJ |
3646 | VEC (probe_p) *ret; |
3647 | ||
3648 | ret = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3649 | ||
3650 | if (ret != NULL) | |
3651 | { | |
3652 | /* We are only interested in checking one element. */ | |
3653 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3654 | ||
3655 | if (!can_evaluate_probe_arguments (p)) | |
3656 | { | |
3657 | /* We cannot use the probe interface here, because it does | |
3658 | not know how to evaluate arguments. */ | |
3659 | VEC_free (probe_p, ret); | |
3660 | ret = NULL; | |
3661 | } | |
3662 | } | |
3663 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3664 | bp_objfile_data->exception_searched = 1; |
3665 | } | |
3666 | ||
3667 | if (bp_objfile_data->exception_probes != NULL) | |
3668 | { | |
3669 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3670 | int i; | |
3671 | struct probe *probe; | |
3672 | ||
3673 | for (i = 0; | |
3674 | VEC_iterate (probe_p, | |
3675 | bp_objfile_data->exception_probes, | |
3676 | i, probe); | |
3677 | ++i) | |
3678 | { | |
3679 | struct breakpoint *b; | |
3680 | ||
729662a5 TT |
3681 | b = create_internal_breakpoint (gdbarch, |
3682 | get_probe_address (probe, | |
3683 | objfile), | |
28106bc2 SDJ |
3684 | bp_exception_master, |
3685 | &internal_breakpoint_ops); | |
3686 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3687 | b->enable_state = bp_disabled; | |
3688 | } | |
3689 | ||
3690 | continue; | |
3691 | } | |
3692 | ||
3693 | /* Otherwise, try the hook function. */ | |
3694 | ||
3b7344d5 | 3695 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3696 | continue; |
3697 | ||
3698 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3699 | |
3b7344d5 | 3700 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3701 | { |
3b7344d5 | 3702 | struct bound_minimal_symbol debug_hook; |
186c406b | 3703 | |
17450429 | 3704 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3705 | if (debug_hook.minsym == NULL) |
17450429 | 3706 | { |
3b7344d5 | 3707 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3708 | continue; |
3709 | } | |
3710 | ||
3711 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3712 | } |
17450429 | 3713 | |
77e371c0 | 3714 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3715 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3716 | ¤t_target); | |
06edf0c0 PA |
3717 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3718 | &internal_breakpoint_ops); | |
17450429 PP |
3719 | b->addr_string = xstrdup (func_name); |
3720 | b->enable_state = bp_disabled; | |
186c406b TT |
3721 | } |
3722 | ||
44702360 | 3723 | update_global_location_list (UGLL_MAY_INSERT); |
186c406b TT |
3724 | } |
3725 | ||
c906108c | 3726 | void |
fba45db2 | 3727 | update_breakpoints_after_exec (void) |
c906108c | 3728 | { |
35df4500 | 3729 | struct breakpoint *b, *b_tmp; |
876fa593 | 3730 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3731 | |
25b22b0a PA |
3732 | /* We're about to delete breakpoints from GDB's lists. If the |
3733 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3734 | writing the breakpoints' "shadow contents" back into memory. The | |
3735 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3736 | do that. Instead, the target is responsible from marking | |
3737 | breakpoints out as soon as it detects an exec. We don't do that | |
3738 | here instead, because there may be other attempts to delete | |
3739 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3740 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3741 | if (bploc->pspace == current_program_space) |
3742 | gdb_assert (!bploc->inserted); | |
c906108c | 3743 | |
35df4500 | 3744 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3745 | { |
6c95b8df PA |
3746 | if (b->pspace != current_program_space) |
3747 | continue; | |
3748 | ||
4a64f543 | 3749 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3750 | if (b->type == bp_shlib_event) |
3751 | { | |
3752 | delete_breakpoint (b); | |
3753 | continue; | |
3754 | } | |
c906108c | 3755 | |
4a64f543 | 3756 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3757 | if (b->type == bp_jit_event) |
3758 | { | |
3759 | delete_breakpoint (b); | |
3760 | continue; | |
3761 | } | |
3762 | ||
1900040c | 3763 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3764 | as must overlay event and longjmp master breakpoints. */ |
3765 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3766 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3767 | || b->type == bp_exception_master) | |
c4093a6a JM |
3768 | { |
3769 | delete_breakpoint (b); | |
3770 | continue; | |
3771 | } | |
3772 | ||
4a64f543 | 3773 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3774 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3775 | { |
3776 | delete_breakpoint (b); | |
3777 | continue; | |
3778 | } | |
3779 | ||
611c83ae PA |
3780 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3781 | after an exec. */ | |
186c406b | 3782 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3783 | || b->type == bp_longjmp_call_dummy |
186c406b | 3784 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3785 | { |
3786 | delete_breakpoint (b); | |
3787 | continue; | |
3788 | } | |
3789 | ||
ce78b96d JB |
3790 | if (b->type == bp_catchpoint) |
3791 | { | |
3792 | /* For now, none of the bp_catchpoint breakpoints need to | |
3793 | do anything at this point. In the future, if some of | |
3794 | the catchpoints need to something, we will need to add | |
3795 | a new method, and call this method from here. */ | |
3796 | continue; | |
3797 | } | |
3798 | ||
c5aa993b JM |
3799 | /* bp_finish is a special case. The only way we ought to be able |
3800 | to see one of these when an exec() has happened, is if the user | |
3801 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3802 | carries them to the call-site of the current callee, by setting | |
3803 | a temporary bp there and resuming. But in this case, the finish | |
3804 | will carry them entirely through the vfork & exec. | |
3805 | ||
3806 | We don't want to allow a bp_finish to remain inserted now. But | |
3807 | we can't safely delete it, 'cause finish_command has a handle to | |
3808 | the bp on a bpstat, and will later want to delete it. There's a | |
3809 | chance (and I've seen it happen) that if we delete the bp_finish | |
3810 | here, that its storage will get reused by the time finish_command | |
3811 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3812 | We really must allow finish_command to delete a bp_finish. | |
3813 | ||
e5dd4106 | 3814 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3815 | it's safe to delete something others may have handles to?" |
3816 | problem, what we'll do here is just uninsert the bp_finish, and | |
3817 | let finish_command delete it. | |
3818 | ||
3819 | (We know the bp_finish is "doomed" in the sense that it's | |
3820 | momentary, and will be deleted as soon as finish_command sees | |
3821 | the inferior stopped. So it doesn't matter that the bp's | |
3822 | address is probably bogus in the new a.out, unlike e.g., the | |
3823 | solib breakpoints.) */ | |
c5aa993b | 3824 | |
c5aa993b JM |
3825 | if (b->type == bp_finish) |
3826 | { | |
3827 | continue; | |
3828 | } | |
3829 | ||
3830 | /* Without a symbolic address, we have little hope of the | |
3831 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3832 | a.out. */ |
c5aa993b JM |
3833 | if (b->addr_string == NULL) |
3834 | { | |
3835 | delete_breakpoint (b); | |
3836 | continue; | |
3837 | } | |
c5aa993b | 3838 | } |
c906108c SS |
3839 | } |
3840 | ||
3841 | int | |
d80ee84f | 3842 | detach_breakpoints (ptid_t ptid) |
c906108c | 3843 | { |
35df4500 | 3844 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3845 | int val = 0; |
ce696e05 | 3846 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3847 | struct inferior *inf = current_inferior (); |
c5aa993b | 3848 | |
dfd4cc63 | 3849 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3850 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3851 | |
6c95b8df | 3852 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3853 | inferior_ptid = ptid; |
35df4500 | 3854 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3855 | { |
35df4500 | 3856 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3857 | continue; |
3858 | ||
bd9673a4 PW |
3859 | /* This function must physically remove breakpoints locations |
3860 | from the specified ptid, without modifying the breakpoint | |
3861 | package's state. Locations of type bp_loc_other are only | |
3862 | maintained at GDB side. So, there is no need to remove | |
3863 | these bp_loc_other locations. Moreover, removing these | |
3864 | would modify the breakpoint package's state. */ | |
3865 | if (bl->loc_type == bp_loc_other) | |
3866 | continue; | |
3867 | ||
35df4500 TJB |
3868 | if (bl->inserted) |
3869 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3870 | } |
d03285ec UW |
3871 | |
3872 | /* Detach single-step breakpoints as well. */ | |
3873 | detach_single_step_breakpoints (); | |
3874 | ||
ce696e05 | 3875 | do_cleanups (old_chain); |
3a1bae8e | 3876 | return val; |
c906108c SS |
3877 | } |
3878 | ||
35df4500 | 3879 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3880 | Note that this is used to detach breakpoints from a child fork. |
3881 | When we get here, the child isn't in the inferior list, and neither | |
3882 | do we have objects to represent its address space --- we should | |
35df4500 | 3883 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3884 | |
c906108c | 3885 | static int |
35df4500 | 3886 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3887 | { |
3888 | int val; | |
c5aa993b | 3889 | |
35df4500 TJB |
3890 | /* BL is never in moribund_locations by our callers. */ |
3891 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3892 | |
35df4500 | 3893 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3894 | /* Permanent breakpoints cannot be inserted or removed. */ |
3895 | return 0; | |
3896 | ||
74960c60 VP |
3897 | /* The type of none suggests that owner is actually deleted. |
3898 | This should not ever happen. */ | |
35df4500 | 3899 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3900 | |
35df4500 TJB |
3901 | if (bl->loc_type == bp_loc_software_breakpoint |
3902 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3903 | { |
c02f5703 MS |
3904 | /* "Normal" instruction breakpoint: either the standard |
3905 | trap-instruction bp (bp_breakpoint), or a | |
3906 | bp_hardware_breakpoint. */ | |
3907 | ||
3908 | /* First check to see if we have to handle an overlay. */ | |
3909 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3910 | || bl->section == NULL |
3911 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3912 | { |
3913 | /* No overlay handling: just remove the breakpoint. */ | |
08351840 PA |
3914 | |
3915 | /* If we're trying to uninsert a memory breakpoint that we | |
3916 | know is set in a dynamic object that is marked | |
3917 | shlib_disabled, then either the dynamic object was | |
3918 | removed with "remove-symbol-file" or with | |
3919 | "nosharedlibrary". In the former case, we don't know | |
3920 | whether another dynamic object might have loaded over the | |
3921 | breakpoint's address -- the user might well let us know | |
3922 | about it next with add-symbol-file (the whole point of | |
d03de421 | 3923 | add-symbol-file is letting the user manually maintain a |
08351840 PA |
3924 | list of dynamically loaded objects). If we have the |
3925 | breakpoint's shadow memory, that is, this is a software | |
3926 | breakpoint managed by GDB, check whether the breakpoint | |
3927 | is still inserted in memory, to avoid overwriting wrong | |
3928 | code with stale saved shadow contents. Note that HW | |
3929 | breakpoints don't have shadow memory, as they're | |
3930 | implemented using a mechanism that is not dependent on | |
3931 | being able to modify the target's memory, and as such | |
3932 | they should always be removed. */ | |
3933 | if (bl->shlib_disabled | |
3934 | && bl->target_info.shadow_len != 0 | |
3935 | && !memory_validate_breakpoint (bl->gdbarch, &bl->target_info)) | |
3936 | val = 0; | |
3937 | else | |
3938 | val = bl->owner->ops->remove_location (bl); | |
c02f5703 | 3939 | } |
c906108c SS |
3940 | else |
3941 | { | |
4a64f543 | 3942 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3943 | Did we set a breakpoint at the LMA? */ |
3944 | if (!overlay_events_enabled) | |
3945 | { | |
3946 | /* Yes -- overlay event support is not active, so we | |
3947 | should have set a breakpoint at the LMA. Remove it. | |
3948 | */ | |
c02f5703 MS |
3949 | /* Ignore any failures: if the LMA is in ROM, we will |
3950 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3951 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3952 | target_remove_hw_breakpoint (bl->gdbarch, | |
3953 | &bl->overlay_target_info); | |
c02f5703 | 3954 | else |
35df4500 TJB |
3955 | target_remove_breakpoint (bl->gdbarch, |
3956 | &bl->overlay_target_info); | |
c02f5703 MS |
3957 | } |
3958 | /* Did we set a breakpoint at the VMA? | |
3959 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3960 | if (bl->inserted) |
c906108c | 3961 | { |
c02f5703 MS |
3962 | /* Yes -- remove it. Previously we did not bother to |
3963 | remove the breakpoint if the section had been | |
3964 | unmapped, but let's not rely on that being safe. We | |
3965 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3966 | |
3967 | /* However, we should remove *software* breakpoints only | |
3968 | if the section is still mapped, or else we overwrite | |
3969 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3970 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3971 | || section_is_mapped (bl->section)) | |
3972 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3973 | else |
3974 | val = 0; | |
c906108c | 3975 | } |
c02f5703 MS |
3976 | else |
3977 | { | |
3978 | /* No -- not inserted, so no need to remove. No error. */ | |
3979 | val = 0; | |
3980 | } | |
c906108c | 3981 | } |
879d1e6b | 3982 | |
08351840 PA |
3983 | /* In some cases, we might not be able to remove a breakpoint in |
3984 | a shared library that has already been removed, but we have | |
3985 | not yet processed the shlib unload event. Similarly for an | |
3986 | unloaded add-symbol-file object - the user might not yet have | |
3987 | had the chance to remove-symbol-file it. shlib_disabled will | |
3988 | be set if the library/object has already been removed, but | |
3989 | the breakpoint hasn't been uninserted yet, e.g., after | |
3990 | "nosharedlibrary" or "remove-symbol-file" with breakpoints | |
3991 | always-inserted mode. */ | |
076855f9 | 3992 | if (val |
08351840 PA |
3993 | && (bl->loc_type == bp_loc_software_breakpoint |
3994 | && (bl->shlib_disabled | |
3995 | || solib_name_from_address (bl->pspace, bl->address) | |
d03de421 PA |
3996 | || shared_objfile_contains_address_p (bl->pspace, |
3997 | bl->address)))) | |
879d1e6b UW |
3998 | val = 0; |
3999 | ||
c906108c SS |
4000 | if (val) |
4001 | return val; | |
35df4500 | 4002 | bl->inserted = (is == mark_inserted); |
c906108c | 4003 | } |
35df4500 | 4004 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 4005 | { |
77b06cd7 TJB |
4006 | gdb_assert (bl->owner->ops != NULL |
4007 | && bl->owner->ops->remove_location != NULL); | |
4008 | ||
35df4500 | 4009 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 4010 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 4011 | |
c906108c | 4012 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 4013 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 4014 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 4015 | bl->owner->number); |
c906108c | 4016 | } |
35df4500 TJB |
4017 | else if (bl->owner->type == bp_catchpoint |
4018 | && breakpoint_enabled (bl->owner) | |
4019 | && !bl->duplicate) | |
ce78b96d | 4020 | { |
77b06cd7 TJB |
4021 | gdb_assert (bl->owner->ops != NULL |
4022 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 4023 | |
77b06cd7 | 4024 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
4025 | if (val) |
4026 | return val; | |
77b06cd7 | 4027 | |
35df4500 | 4028 | bl->inserted = (is == mark_inserted); |
ce78b96d | 4029 | } |
c906108c SS |
4030 | |
4031 | return 0; | |
4032 | } | |
4033 | ||
6c95b8df | 4034 | static int |
35df4500 | 4035 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
4036 | { |
4037 | int ret; | |
4038 | struct cleanup *old_chain; | |
4039 | ||
35df4500 TJB |
4040 | /* BL is never in moribund_locations by our callers. */ |
4041 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 4042 | |
35df4500 | 4043 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
4044 | /* Permanent breakpoints cannot be inserted or removed. */ |
4045 | return 0; | |
4046 | ||
4047 | /* The type of none suggests that owner is actually deleted. | |
4048 | This should not ever happen. */ | |
35df4500 | 4049 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
4050 | |
4051 | old_chain = save_current_space_and_thread (); | |
4052 | ||
35df4500 | 4053 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 4054 | |
35df4500 | 4055 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
4056 | |
4057 | do_cleanups (old_chain); | |
4058 | return ret; | |
4059 | } | |
4060 | ||
c906108c SS |
4061 | /* Clear the "inserted" flag in all breakpoints. */ |
4062 | ||
25b22b0a | 4063 | void |
fba45db2 | 4064 | mark_breakpoints_out (void) |
c906108c | 4065 | { |
35df4500 | 4066 | struct bp_location *bl, **blp_tmp; |
c906108c | 4067 | |
35df4500 TJB |
4068 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4069 | if (bl->pspace == current_program_space) | |
4070 | bl->inserted = 0; | |
c906108c SS |
4071 | } |
4072 | ||
53a5351d JM |
4073 | /* Clear the "inserted" flag in all breakpoints and delete any |
4074 | breakpoints which should go away between runs of the program. | |
c906108c SS |
4075 | |
4076 | Plus other such housekeeping that has to be done for breakpoints | |
4077 | between runs. | |
4078 | ||
53a5351d JM |
4079 | Note: this function gets called at the end of a run (by |
4080 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 4081 | init_wait_for_inferior). */ |
c906108c SS |
4082 | |
4083 | ||
4084 | ||
4085 | void | |
fba45db2 | 4086 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 4087 | { |
35df4500 TJB |
4088 | struct breakpoint *b, *b_tmp; |
4089 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 4090 | int ix; |
6c95b8df | 4091 | struct program_space *pspace = current_program_space; |
c906108c | 4092 | |
50c71eaf PA |
4093 | /* If breakpoint locations are shared across processes, then there's |
4094 | nothing to do. */ | |
f5656ead | 4095 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
4096 | return; |
4097 | ||
35df4500 | 4098 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 4099 | { |
35df4500 TJB |
4100 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
4101 | if (bl->pspace == pspace | |
4102 | && bl->owner->enable_state != bp_permanent) | |
4103 | bl->inserted = 0; | |
6c95b8df | 4104 | } |
075f6582 | 4105 | |
35df4500 | 4106 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 4107 | { |
6c95b8df PA |
4108 | if (b->loc && b->loc->pspace != pspace) |
4109 | continue; | |
4110 | ||
c5aa993b JM |
4111 | switch (b->type) |
4112 | { | |
4113 | case bp_call_dummy: | |
e2e4d78b | 4114 | case bp_longjmp_call_dummy: |
c906108c | 4115 | |
c5aa993b | 4116 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
4117 | cause problems when the inferior is rerun, so we better get |
4118 | rid of it. */ | |
4119 | ||
4120 | case bp_watchpoint_scope: | |
4121 | ||
4122 | /* Also get rid of scope breakpoints. */ | |
4123 | ||
4124 | case bp_shlib_event: | |
4125 | ||
4126 | /* Also remove solib event breakpoints. Their addresses may | |
4127 | have changed since the last time we ran the program. | |
4128 | Actually we may now be debugging against different target; | |
4129 | and so the solib backend that installed this breakpoint may | |
4130 | not be used in by the target. E.g., | |
4131 | ||
4132 | (gdb) file prog-linux | |
4133 | (gdb) run # native linux target | |
4134 | ... | |
4135 | (gdb) kill | |
4136 | (gdb) file prog-win.exe | |
4137 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
4138 | */ | |
c906108c | 4139 | |
f59f708a PA |
4140 | case bp_step_resume: |
4141 | ||
4142 | /* Also remove step-resume breakpoints. */ | |
4143 | ||
c5aa993b JM |
4144 | delete_breakpoint (b); |
4145 | break; | |
c906108c | 4146 | |
c5aa993b JM |
4147 | case bp_watchpoint: |
4148 | case bp_hardware_watchpoint: | |
4149 | case bp_read_watchpoint: | |
4150 | case bp_access_watchpoint: | |
3a5c3e22 PA |
4151 | { |
4152 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 4153 | |
3a5c3e22 PA |
4154 | /* Likewise for watchpoints on local expressions. */ |
4155 | if (w->exp_valid_block != NULL) | |
4156 | delete_breakpoint (b); | |
4157 | else if (context == inf_starting) | |
4158 | { | |
4159 | /* Reset val field to force reread of starting value in | |
4160 | insert_breakpoints. */ | |
4161 | if (w->val) | |
4162 | value_free (w->val); | |
4163 | w->val = NULL; | |
4164 | w->val_valid = 0; | |
c860120c | 4165 | } |
3a5c3e22 | 4166 | } |
c5aa993b JM |
4167 | break; |
4168 | default: | |
c5aa993b JM |
4169 | break; |
4170 | } | |
4171 | } | |
1c5cfe86 PA |
4172 | |
4173 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
4174 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
4175 | decref_bp_location (&bl); | |
1c5cfe86 | 4176 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
4177 | } |
4178 | ||
6c95b8df PA |
4179 | /* These functions concern about actual breakpoints inserted in the |
4180 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4181 | we need to hop over the bkpt --- so we check for address space | |
4182 | match, not program space. */ | |
4183 | ||
c2c6d25f JM |
4184 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4185 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4186 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4187 | permanent breakpoint. | |
4188 | - When continuing from a location with an ordinary breakpoint, we | |
4189 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4190 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4191 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4192 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4193 | |
c2c6d25f | 4194 | enum breakpoint_here |
6c95b8df | 4195 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4196 | { |
35df4500 | 4197 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4198 | int any_breakpoint_here = 0; |
c906108c | 4199 | |
35df4500 | 4200 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4201 | { |
35df4500 TJB |
4202 | if (bl->loc_type != bp_loc_software_breakpoint |
4203 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4204 | continue; |
4205 | ||
f1310107 | 4206 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
4207 | if ((breakpoint_enabled (bl->owner) |
4208 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 4209 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4210 | { |
4211 | if (overlay_debugging | |
35df4500 TJB |
4212 | && section_is_overlay (bl->section) |
4213 | && !section_is_mapped (bl->section)) | |
075f6582 | 4214 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 4215 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
4216 | return permanent_breakpoint_here; |
4217 | else | |
4218 | any_breakpoint_here = 1; | |
4219 | } | |
4220 | } | |
c906108c | 4221 | |
c2c6d25f | 4222 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
4223 | } |
4224 | ||
1c5cfe86 PA |
4225 | /* Return true if there's a moribund breakpoint at PC. */ |
4226 | ||
4227 | int | |
6c95b8df | 4228 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4229 | { |
4230 | struct bp_location *loc; | |
4231 | int ix; | |
4232 | ||
4233 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4234 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4235 | return 1; |
4236 | ||
4237 | return 0; | |
4238 | } | |
c2c6d25f | 4239 | |
c36b740a | 4240 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
4241 | inserted using regular breakpoint_chain / bp_location array |
4242 | mechanism. This does not check for single-step breakpoints, which | |
4243 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
4244 | |
4245 | int | |
4a64f543 MS |
4246 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
4247 | CORE_ADDR pc) | |
c906108c | 4248 | { |
35df4500 | 4249 | struct bp_location *bl, **blp_tmp; |
c906108c | 4250 | |
35df4500 | 4251 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 4252 | { |
35df4500 TJB |
4253 | if (bl->loc_type != bp_loc_software_breakpoint |
4254 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4255 | continue; |
4256 | ||
35df4500 | 4257 | if (bl->inserted |
f1310107 | 4258 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4259 | { |
4260 | if (overlay_debugging | |
35df4500 TJB |
4261 | && section_is_overlay (bl->section) |
4262 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
4263 | continue; /* unmapped overlay -- can't be a match */ |
4264 | else | |
4265 | return 1; | |
4266 | } | |
c5aa993b | 4267 | } |
c36b740a VP |
4268 | return 0; |
4269 | } | |
4270 | ||
4271 | /* Returns non-zero iff there's either regular breakpoint | |
4272 | or a single step breakpoint inserted at PC. */ | |
4273 | ||
4274 | int | |
6c95b8df | 4275 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 4276 | { |
6c95b8df | 4277 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 4278 | return 1; |
c906108c | 4279 | |
6c95b8df | 4280 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
4281 | return 1; |
4282 | ||
c906108c SS |
4283 | return 0; |
4284 | } | |
4285 | ||
ef370185 JB |
4286 | /* Ignoring deprecated raw breakpoints, return non-zero iff there is a |
4287 | software breakpoint inserted at PC. */ | |
4fa8626c | 4288 | |
ef370185 JB |
4289 | static struct bp_location * |
4290 | find_non_raw_software_breakpoint_inserted_here (struct address_space *aspace, | |
4291 | CORE_ADDR pc) | |
4fa8626c | 4292 | { |
35df4500 | 4293 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 4294 | |
35df4500 | 4295 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 4296 | { |
35df4500 | 4297 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4298 | continue; |
4299 | ||
35df4500 TJB |
4300 | if (bl->inserted |
4301 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 4302 | aspace, pc)) |
4fa8626c DJ |
4303 | { |
4304 | if (overlay_debugging | |
35df4500 TJB |
4305 | && section_is_overlay (bl->section) |
4306 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
4307 | continue; /* unmapped overlay -- can't be a match */ |
4308 | else | |
ef370185 | 4309 | return bl; |
4fa8626c DJ |
4310 | } |
4311 | } | |
4312 | ||
ef370185 JB |
4313 | return NULL; |
4314 | } | |
4315 | ||
4316 | /* This function returns non-zero iff there is a software breakpoint | |
4317 | inserted at PC. */ | |
4318 | ||
4319 | int | |
4320 | software_breakpoint_inserted_here_p (struct address_space *aspace, | |
4321 | CORE_ADDR pc) | |
4322 | { | |
4323 | if (find_non_raw_software_breakpoint_inserted_here (aspace, pc) != NULL) | |
4324 | return 1; | |
4325 | ||
1aafd4da | 4326 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 4327 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
4328 | return 1; |
4329 | ||
4fa8626c DJ |
4330 | return 0; |
4331 | } | |
4332 | ||
9093389c PA |
4333 | int |
4334 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
4335 | CORE_ADDR addr, ULONGEST len) | |
4336 | { | |
4337 | struct breakpoint *bpt; | |
4338 | ||
4339 | ALL_BREAKPOINTS (bpt) | |
4340 | { | |
4341 | struct bp_location *loc; | |
4342 | ||
4343 | if (bpt->type != bp_hardware_watchpoint | |
4344 | && bpt->type != bp_access_watchpoint) | |
4345 | continue; | |
4346 | ||
4347 | if (!breakpoint_enabled (bpt)) | |
4348 | continue; | |
4349 | ||
4350 | for (loc = bpt->loc; loc; loc = loc->next) | |
4351 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4352 | { | |
4353 | CORE_ADDR l, h; | |
4354 | ||
4355 | /* Check for intersection. */ | |
4356 | l = max (loc->address, addr); | |
4357 | h = min (loc->address + loc->length, addr + len); | |
4358 | if (l < h) | |
4359 | return 1; | |
4360 | } | |
4361 | } | |
4362 | return 0; | |
4363 | } | |
4364 | ||
075f6582 DJ |
4365 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
4366 | PC is valid for process/thread PTID. */ | |
c906108c SS |
4367 | |
4368 | int | |
6c95b8df PA |
4369 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
4370 | ptid_t ptid) | |
c906108c | 4371 | { |
35df4500 | 4372 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 4373 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 4374 | int thread = -1; |
4a306c9a | 4375 | int task = 0; |
a6f1cd96 | 4376 | |
35df4500 | 4377 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 4378 | { |
35df4500 TJB |
4379 | if (bl->loc_type != bp_loc_software_breakpoint |
4380 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4381 | continue; |
4382 | ||
35df4500 TJB |
4383 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
4384 | if (!breakpoint_enabled (bl->owner) | |
4385 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
4386 | continue; |
4387 | ||
f1310107 | 4388 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
4389 | continue; |
4390 | ||
35df4500 | 4391 | if (bl->owner->thread != -1) |
075f6582 | 4392 | { |
a6f1cd96 JB |
4393 | /* This is a thread-specific breakpoint. Check that ptid |
4394 | matches that thread. If thread hasn't been computed yet, | |
4395 | it is now time to do so. */ | |
4396 | if (thread == -1) | |
4397 | thread = pid_to_thread_id (ptid); | |
35df4500 | 4398 | if (bl->owner->thread != thread) |
a6f1cd96 | 4399 | continue; |
075f6582 | 4400 | } |
a6f1cd96 | 4401 | |
35df4500 | 4402 | if (bl->owner->task != 0) |
4a306c9a JB |
4403 | { |
4404 | /* This is a task-specific breakpoint. Check that ptid | |
4405 | matches that task. If task hasn't been computed yet, | |
4406 | it is now time to do so. */ | |
4407 | if (task == 0) | |
4408 | task = ada_get_task_number (ptid); | |
35df4500 | 4409 | if (bl->owner->task != task) |
4a306c9a JB |
4410 | continue; |
4411 | } | |
4412 | ||
a6f1cd96 | 4413 | if (overlay_debugging |
35df4500 TJB |
4414 | && section_is_overlay (bl->section) |
4415 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
4416 | continue; /* unmapped overlay -- can't be a match */ |
4417 | ||
4418 | return 1; | |
c5aa993b | 4419 | } |
c906108c SS |
4420 | |
4421 | return 0; | |
4422 | } | |
c906108c | 4423 | \f |
c5aa993b | 4424 | |
c906108c SS |
4425 | /* bpstat stuff. External routines' interfaces are documented |
4426 | in breakpoint.h. */ | |
4427 | ||
4428 | int | |
c326b90e | 4429 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4430 | { |
533be4dd | 4431 | return (ep->type == bp_catchpoint); |
c906108c SS |
4432 | } |
4433 | ||
f431efe5 PA |
4434 | /* Frees any storage that is part of a bpstat. Does not walk the |
4435 | 'next' chain. */ | |
4436 | ||
4437 | static void | |
198757a8 VP |
4438 | bpstat_free (bpstat bs) |
4439 | { | |
4440 | if (bs->old_val != NULL) | |
4441 | value_free (bs->old_val); | |
9add0f1b | 4442 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4443 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4444 | xfree (bs); |
4445 | } | |
4446 | ||
c906108c SS |
4447 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4448 | Also free any storage that is part of a bpstat. */ | |
4449 | ||
4450 | void | |
fba45db2 | 4451 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4452 | { |
4453 | bpstat p; | |
4454 | bpstat q; | |
4455 | ||
4456 | if (bsp == 0) | |
4457 | return; | |
4458 | p = *bsp; | |
4459 | while (p != NULL) | |
4460 | { | |
4461 | q = p->next; | |
198757a8 | 4462 | bpstat_free (p); |
c906108c SS |
4463 | p = q; |
4464 | } | |
4465 | *bsp = NULL; | |
4466 | } | |
4467 | ||
4468 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4469 | is part of the bpstat is copied as well. */ | |
4470 | ||
4471 | bpstat | |
fba45db2 | 4472 | bpstat_copy (bpstat bs) |
c906108c SS |
4473 | { |
4474 | bpstat p = NULL; | |
4475 | bpstat tmp; | |
4476 | bpstat retval = NULL; | |
4477 | ||
4478 | if (bs == NULL) | |
4479 | return bs; | |
4480 | ||
4481 | for (; bs != NULL; bs = bs->next) | |
4482 | { | |
4483 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4484 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4485 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4486 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4487 | if (bs->old_val != NULL) |
3c3185ac JK |
4488 | { |
4489 | tmp->old_val = value_copy (bs->old_val); | |
4490 | release_value (tmp->old_val); | |
4491 | } | |
31cc81e9 | 4492 | |
c906108c SS |
4493 | if (p == NULL) |
4494 | /* This is the first thing in the chain. */ | |
4495 | retval = tmp; | |
4496 | else | |
4497 | p->next = tmp; | |
4498 | p = tmp; | |
4499 | } | |
4500 | p->next = NULL; | |
4501 | return retval; | |
4502 | } | |
4503 | ||
4a64f543 | 4504 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4505 | |
4506 | bpstat | |
fba45db2 | 4507 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4508 | { |
c5aa993b JM |
4509 | if (bsp == NULL) |
4510 | return NULL; | |
c906108c | 4511 | |
c5aa993b JM |
4512 | for (; bsp != NULL; bsp = bsp->next) |
4513 | { | |
f431efe5 | 4514 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4515 | return bsp; |
4516 | } | |
c906108c SS |
4517 | return NULL; |
4518 | } | |
4519 | ||
ab04a2af TT |
4520 | /* See breakpoint.h. */ |
4521 | ||
47591c29 | 4522 | int |
427cd150 | 4523 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4524 | { |
ab04a2af TT |
4525 | for (; bsp != NULL; bsp = bsp->next) |
4526 | { | |
427cd150 TT |
4527 | if (bsp->breakpoint_at == NULL) |
4528 | { | |
4529 | /* A moribund location can never explain a signal other than | |
4530 | GDB_SIGNAL_TRAP. */ | |
4531 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4532 | return 1; |
427cd150 TT |
4533 | } |
4534 | else | |
47591c29 PA |
4535 | { |
4536 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4537 | sig)) | |
4538 | return 1; | |
4539 | } | |
ab04a2af TT |
4540 | } |
4541 | ||
47591c29 | 4542 | return 0; |
ab04a2af TT |
4543 | } |
4544 | ||
4a64f543 MS |
4545 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4546 | stopped at. *BSP upon return is a bpstat which points to the | |
4547 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4548 | good for anything but further calls to bpstat_num). | |
4549 | ||
8671a17b PA |
4550 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4551 | Return -1 if stopped at a breakpoint that has been deleted since | |
4552 | we set it. | |
4553 | Return 1 otherwise. */ | |
c906108c SS |
4554 | |
4555 | int | |
8671a17b | 4556 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4557 | { |
4558 | struct breakpoint *b; | |
4559 | ||
4560 | if ((*bsp) == NULL) | |
4561 | return 0; /* No more breakpoint values */ | |
8671a17b | 4562 | |
4a64f543 MS |
4563 | /* We assume we'll never have several bpstats that correspond to a |
4564 | single breakpoint -- otherwise, this function might return the | |
4565 | same number more than once and this will look ugly. */ | |
f431efe5 | 4566 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4567 | *bsp = (*bsp)->next; |
4568 | if (b == NULL) | |
4569 | return -1; /* breakpoint that's been deleted since */ | |
4570 | ||
4571 | *num = b->number; /* We have its number */ | |
4572 | return 1; | |
c906108c SS |
4573 | } |
4574 | ||
e93ca019 | 4575 | /* See breakpoint.h. */ |
c906108c SS |
4576 | |
4577 | void | |
e93ca019 | 4578 | bpstat_clear_actions (void) |
c906108c | 4579 | { |
e93ca019 JK |
4580 | struct thread_info *tp; |
4581 | bpstat bs; | |
4582 | ||
4583 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4584 | return; | |
4585 | ||
4586 | tp = find_thread_ptid (inferior_ptid); | |
4587 | if (tp == NULL) | |
4588 | return; | |
4589 | ||
4590 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4591 | { |
9add0f1b | 4592 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4593 | |
c906108c SS |
4594 | if (bs->old_val != NULL) |
4595 | { | |
4596 | value_free (bs->old_val); | |
4597 | bs->old_val = NULL; | |
4598 | } | |
4599 | } | |
4600 | } | |
4601 | ||
f3b1572e PA |
4602 | /* Called when a command is about to proceed the inferior. */ |
4603 | ||
4604 | static void | |
4605 | breakpoint_about_to_proceed (void) | |
4606 | { | |
4607 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4608 | { | |
4609 | struct thread_info *tp = inferior_thread (); | |
4610 | ||
4611 | /* Allow inferior function calls in breakpoint commands to not | |
4612 | interrupt the command list. When the call finishes | |
4613 | successfully, the inferior will be standing at the same | |
4614 | breakpoint as if nothing happened. */ | |
16c381f0 | 4615 | if (tp->control.in_infcall) |
f3b1572e PA |
4616 | return; |
4617 | } | |
4618 | ||
4619 | breakpoint_proceeded = 1; | |
4620 | } | |
4621 | ||
4a64f543 MS |
4622 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4623 | command. */ | |
c906108c | 4624 | static void |
4efb68b1 | 4625 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4626 | { |
4627 | executing_breakpoint_commands = 0; | |
4628 | } | |
4629 | ||
abf85f46 JK |
4630 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4631 | or its equivalent. */ | |
4632 | ||
4633 | static int | |
4634 | command_line_is_silent (struct command_line *cmd) | |
4635 | { | |
4636 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
4637 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
4638 | } | |
4639 | ||
4a64f543 MS |
4640 | /* Execute all the commands associated with all the breakpoints at |
4641 | this location. Any of these commands could cause the process to | |
4642 | proceed beyond this point, etc. We look out for such changes by | |
4643 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4644 | |
347bddb7 PA |
4645 | Returns true if a breakpoint command resumed the inferior. In that |
4646 | case, it is the caller's responsibility to recall it again with the | |
4647 | bpstat of the current thread. */ | |
4648 | ||
4649 | static int | |
4650 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4651 | { |
4652 | bpstat bs; | |
4653 | struct cleanup *old_chain; | |
347bddb7 | 4654 | int again = 0; |
c906108c SS |
4655 | |
4656 | /* Avoid endless recursion if a `source' command is contained | |
4657 | in bs->commands. */ | |
4658 | if (executing_breakpoint_commands) | |
347bddb7 | 4659 | return 0; |
c906108c SS |
4660 | |
4661 | executing_breakpoint_commands = 1; | |
4662 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4663 | ||
cf6c5ffb TT |
4664 | prevent_dont_repeat (); |
4665 | ||
4a64f543 | 4666 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4667 | bs = *bsp; |
4668 | ||
4669 | breakpoint_proceeded = 0; | |
4670 | for (; bs != NULL; bs = bs->next) | |
4671 | { | |
9add0f1b | 4672 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4673 | struct command_line *cmd; |
4674 | struct cleanup *this_cmd_tree_chain; | |
4675 | ||
4676 | /* Take ownership of the BSP's command tree, if it has one. | |
4677 | ||
4678 | The command tree could legitimately contain commands like | |
4679 | 'step' and 'next', which call clear_proceed_status, which | |
4680 | frees stop_bpstat's command tree. To make sure this doesn't | |
4681 | free the tree we're executing out from under us, we need to | |
4682 | take ownership of the tree ourselves. Since a given bpstat's | |
4683 | commands are only executed once, we don't need to copy it; we | |
4684 | can clear the pointer in the bpstat, and make sure we free | |
4685 | the tree when we're done. */ | |
9add0f1b TT |
4686 | ccmd = bs->commands; |
4687 | bs->commands = NULL; | |
abf85f46 JK |
4688 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4689 | cmd = ccmd ? ccmd->commands : NULL; | |
4690 | if (command_line_is_silent (cmd)) | |
4691 | { | |
4692 | /* The action has been already done by bpstat_stop_status. */ | |
4693 | cmd = cmd->next; | |
4694 | } | |
6c50ab1c | 4695 | |
c906108c SS |
4696 | while (cmd != NULL) |
4697 | { | |
4698 | execute_control_command (cmd); | |
4699 | ||
4700 | if (breakpoint_proceeded) | |
4701 | break; | |
4702 | else | |
4703 | cmd = cmd->next; | |
4704 | } | |
6c50ab1c JB |
4705 | |
4706 | /* We can free this command tree now. */ | |
4707 | do_cleanups (this_cmd_tree_chain); | |
4708 | ||
c906108c | 4709 | if (breakpoint_proceeded) |
32c1e744 VP |
4710 | { |
4711 | if (target_can_async_p ()) | |
347bddb7 PA |
4712 | /* If we are in async mode, then the target might be still |
4713 | running, not stopped at any breakpoint, so nothing for | |
4714 | us to do here -- just return to the event loop. */ | |
4715 | ; | |
32c1e744 VP |
4716 | else |
4717 | /* In sync mode, when execute_control_command returns | |
4718 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4719 | Breakpoint commands for that stop were not run, since |
4720 | execute_command does not run breakpoint commands -- | |
4721 | only command_line_handler does, but that one is not | |
4722 | involved in execution of breakpoint commands. So, we | |
4723 | can now execute breakpoint commands. It should be | |
4724 | noted that making execute_command do bpstat actions is | |
4725 | not an option -- in this case we'll have recursive | |
4726 | invocation of bpstat for each breakpoint with a | |
4727 | command, and can easily blow up GDB stack. Instead, we | |
4728 | return true, which will trigger the caller to recall us | |
4729 | with the new stop_bpstat. */ | |
4730 | again = 1; | |
4731 | break; | |
32c1e744 | 4732 | } |
c906108c | 4733 | } |
c2b8ed2c | 4734 | do_cleanups (old_chain); |
347bddb7 PA |
4735 | return again; |
4736 | } | |
4737 | ||
4738 | void | |
4739 | bpstat_do_actions (void) | |
4740 | { | |
353d1d73 JK |
4741 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4742 | ||
347bddb7 PA |
4743 | /* Do any commands attached to breakpoint we are stopped at. */ |
4744 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4745 | && target_has_execution | |
4746 | && !is_exited (inferior_ptid) | |
4747 | && !is_executing (inferior_ptid)) | |
4748 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4749 | and only return when it is stopped at the next breakpoint, we | |
4750 | keep doing breakpoint actions until it returns false to | |
4751 | indicate the inferior was not resumed. */ | |
16c381f0 | 4752 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4753 | break; |
353d1d73 JK |
4754 | |
4755 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4756 | } |
4757 | ||
fa4727a6 DJ |
4758 | /* Print out the (old or new) value associated with a watchpoint. */ |
4759 | ||
4760 | static void | |
4761 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4762 | { | |
4763 | if (val == NULL) | |
4764 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4765 | else | |
79a45b7d TT |
4766 | { |
4767 | struct value_print_options opts; | |
4768 | get_user_print_options (&opts); | |
4769 | value_print (val, stream, &opts); | |
4770 | } | |
fa4727a6 DJ |
4771 | } |
4772 | ||
e514a9d6 | 4773 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4774 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4775 | 'print_it' in the bpstat structure. Under some circumstances we |
4776 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4777 | normal_stop(). */ |
e514a9d6 JM |
4778 | |
4779 | static enum print_stop_action | |
4780 | print_bp_stop_message (bpstat bs) | |
4781 | { | |
4782 | switch (bs->print_it) | |
4783 | { | |
4784 | case print_it_noop: | |
4a64f543 | 4785 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4786 | return PRINT_UNKNOWN; |
4787 | break; | |
4788 | ||
4789 | case print_it_done: | |
4790 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4791 | relevant messages. */ |
e514a9d6 JM |
4792 | return PRINT_SRC_AND_LOC; |
4793 | break; | |
4794 | ||
4795 | case print_it_normal: | |
4f8d1dc6 | 4796 | { |
f431efe5 PA |
4797 | struct breakpoint *b = bs->breakpoint_at; |
4798 | ||
1a6a67de TJB |
4799 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4800 | which has since been deleted. */ | |
4801 | if (b == NULL) | |
4802 | return PRINT_UNKNOWN; | |
4803 | ||
348d480f PA |
4804 | /* Normal case. Call the breakpoint's print_it method. */ |
4805 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4806 | } |
348d480f | 4807 | break; |
3086aeae | 4808 | |
e514a9d6 | 4809 | default: |
8e65ff28 | 4810 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4811 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4812 | break; |
c906108c | 4813 | } |
c906108c SS |
4814 | } |
4815 | ||
edcc5120 TT |
4816 | /* A helper function that prints a shared library stopped event. */ |
4817 | ||
4818 | static void | |
4819 | print_solib_event (int is_catchpoint) | |
4820 | { | |
4821 | int any_deleted | |
4822 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4823 | int any_added | |
4824 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4825 | ||
4826 | if (!is_catchpoint) | |
4827 | { | |
4828 | if (any_added || any_deleted) | |
4829 | ui_out_text (current_uiout, | |
4830 | _("Stopped due to shared library event:\n")); | |
4831 | else | |
4832 | ui_out_text (current_uiout, | |
4833 | _("Stopped due to shared library event (no " | |
4834 | "libraries added or removed)\n")); | |
4835 | } | |
4836 | ||
4837 | if (ui_out_is_mi_like_p (current_uiout)) | |
4838 | ui_out_field_string (current_uiout, "reason", | |
4839 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4840 | ||
4841 | if (any_deleted) | |
4842 | { | |
4843 | struct cleanup *cleanup; | |
4844 | char *name; | |
4845 | int ix; | |
4846 | ||
4847 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4848 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4849 | "removed"); | |
4850 | for (ix = 0; | |
4851 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4852 | ix, name); | |
4853 | ++ix) | |
4854 | { | |
4855 | if (ix > 0) | |
4856 | ui_out_text (current_uiout, " "); | |
4857 | ui_out_field_string (current_uiout, "library", name); | |
4858 | ui_out_text (current_uiout, "\n"); | |
4859 | } | |
4860 | ||
4861 | do_cleanups (cleanup); | |
4862 | } | |
4863 | ||
4864 | if (any_added) | |
4865 | { | |
4866 | struct so_list *iter; | |
4867 | int ix; | |
4868 | struct cleanup *cleanup; | |
4869 | ||
4870 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4871 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4872 | "added"); | |
4873 | for (ix = 0; | |
4874 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4875 | ix, iter); | |
4876 | ++ix) | |
4877 | { | |
4878 | if (ix > 0) | |
4879 | ui_out_text (current_uiout, " "); | |
4880 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4881 | ui_out_text (current_uiout, "\n"); | |
4882 | } | |
4883 | ||
4884 | do_cleanups (cleanup); | |
4885 | } | |
4886 | } | |
4887 | ||
e514a9d6 JM |
4888 | /* Print a message indicating what happened. This is called from |
4889 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4890 | list - a list of the eventpoints that caused this stop. KIND is |
4891 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4892 | routine calls the generic print routine for printing a message |
4893 | about reasons for stopping. This will print (for example) the | |
4894 | "Breakpoint n," part of the output. The return value of this | |
4895 | routine is one of: | |
c906108c | 4896 | |
4a64f543 | 4897 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4898 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4899 | code to print the location. An example is |
c5aa993b JM |
4900 | "Breakpoint 1, " which should be followed by |
4901 | the location. | |
917317f4 | 4902 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4903 | to also print the location part of the message. |
4904 | An example is the catch/throw messages, which | |
4a64f543 | 4905 | don't require a location appended to the end. |
917317f4 | 4906 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4907 | further info to be printed. */ |
c906108c | 4908 | |
917317f4 | 4909 | enum print_stop_action |
36dfb11c | 4910 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4911 | { |
4912 | int val; | |
c5aa993b | 4913 | |
c906108c | 4914 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4915 | (Currently all watchpoints go on the bpstat whether hit or not. |
4916 | That probably could (should) be changed, provided care is taken | |
c906108c | 4917 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4918 | for (; bs; bs = bs->next) |
4919 | { | |
4920 | val = print_bp_stop_message (bs); | |
4921 | if (val == PRINT_SRC_ONLY | |
4922 | || val == PRINT_SRC_AND_LOC | |
4923 | || val == PRINT_NOTHING) | |
4924 | return val; | |
4925 | } | |
c906108c | 4926 | |
36dfb11c TT |
4927 | /* If we had hit a shared library event breakpoint, |
4928 | print_bp_stop_message would print out this message. If we hit an | |
4929 | OS-level shared library event, do the same thing. */ | |
4930 | if (kind == TARGET_WAITKIND_LOADED) | |
4931 | { | |
edcc5120 | 4932 | print_solib_event (0); |
36dfb11c TT |
4933 | return PRINT_NOTHING; |
4934 | } | |
4935 | ||
e514a9d6 | 4936 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4937 | with and nothing was printed. */ |
917317f4 | 4938 | return PRINT_UNKNOWN; |
c906108c SS |
4939 | } |
4940 | ||
c42bd95a DE |
4941 | /* Evaluate the expression EXP and return 1 if value is zero. |
4942 | This returns the inverse of the condition because it is called | |
4943 | from catch_errors which returns 0 if an exception happened, and if an | |
4944 | exception happens we want execution to stop. | |
4a64f543 | 4945 | The argument is a "struct expression *" that has been cast to a |
c42bd95a | 4946 | "void *" to make it pass through catch_errors. */ |
c906108c SS |
4947 | |
4948 | static int | |
4efb68b1 | 4949 | breakpoint_cond_eval (void *exp) |
c906108c | 4950 | { |
278cd55f | 4951 | struct value *mark = value_mark (); |
c5aa993b | 4952 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4953 | |
c906108c SS |
4954 | value_free_to_mark (mark); |
4955 | return i; | |
4956 | } | |
4957 | ||
5760d0ab | 4958 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4959 | |
4960 | static bpstat | |
5760d0ab | 4961 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4962 | { |
4963 | bpstat bs; | |
4964 | ||
4965 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4966 | bs->next = NULL; |
4967 | **bs_link_pointer = bs; | |
4968 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4969 | bs->breakpoint_at = bl->owner; |
4970 | bs->bp_location_at = bl; | |
4971 | incref_bp_location (bl); | |
c906108c SS |
4972 | /* If the condition is false, etc., don't do the commands. */ |
4973 | bs->commands = NULL; | |
4974 | bs->old_val = NULL; | |
4975 | bs->print_it = print_it_normal; | |
4976 | return bs; | |
4977 | } | |
4978 | \f | |
d983da9c DJ |
4979 | /* The target has stopped with waitstatus WS. Check if any hardware |
4980 | watchpoints have triggered, according to the target. */ | |
4981 | ||
4982 | int | |
4983 | watchpoints_triggered (struct target_waitstatus *ws) | |
4984 | { | |
d92524f1 | 4985 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4986 | CORE_ADDR addr; |
4987 | struct breakpoint *b; | |
4988 | ||
4989 | if (!stopped_by_watchpoint) | |
4990 | { | |
4991 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4992 | as not triggered. */ | |
4993 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4994 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4995 | { |
4996 | struct watchpoint *w = (struct watchpoint *) b; | |
4997 | ||
4998 | w->watchpoint_triggered = watch_triggered_no; | |
4999 | } | |
d983da9c DJ |
5000 | |
5001 | return 0; | |
5002 | } | |
5003 | ||
5004 | if (!target_stopped_data_address (¤t_target, &addr)) | |
5005 | { | |
5006 | /* We were stopped by a watchpoint, but we don't know where. | |
5007 | Mark all watchpoints as unknown. */ | |
5008 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 5009 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
5010 | { |
5011 | struct watchpoint *w = (struct watchpoint *) b; | |
5012 | ||
5013 | w->watchpoint_triggered = watch_triggered_unknown; | |
5014 | } | |
d983da9c | 5015 | |
3c4797ba | 5016 | return 1; |
d983da9c DJ |
5017 | } |
5018 | ||
5019 | /* The target could report the data address. Mark watchpoints | |
5020 | affected by this data address as triggered, and all others as not | |
5021 | triggered. */ | |
5022 | ||
5023 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 5024 | if (is_hardware_watchpoint (b)) |
d983da9c | 5025 | { |
3a5c3e22 | 5026 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 5027 | struct bp_location *loc; |
d983da9c | 5028 | |
3a5c3e22 | 5029 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 5030 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 5031 | { |
3a5c3e22 | 5032 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 5033 | { |
3a5c3e22 PA |
5034 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
5035 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
5036 | |
5037 | if (newaddr == start) | |
5038 | { | |
3a5c3e22 | 5039 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
5040 | break; |
5041 | } | |
5042 | } | |
5043 | /* Exact match not required. Within range is sufficient. */ | |
5044 | else if (target_watchpoint_addr_within_range (¤t_target, | |
5045 | addr, loc->address, | |
5046 | loc->length)) | |
5047 | { | |
3a5c3e22 | 5048 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
5049 | break; |
5050 | } | |
5051 | } | |
d983da9c DJ |
5052 | } |
5053 | ||
5054 | return 1; | |
5055 | } | |
5056 | ||
c906108c SS |
5057 | /* Possible return values for watchpoint_check (this can't be an enum |
5058 | because of check_errors). */ | |
5059 | /* The watchpoint has been deleted. */ | |
5060 | #define WP_DELETED 1 | |
5061 | /* The value has changed. */ | |
5062 | #define WP_VALUE_CHANGED 2 | |
5063 | /* The value has not changed. */ | |
5064 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
5065 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
5066 | #define WP_IGNORE 4 | |
c906108c SS |
5067 | |
5068 | #define BP_TEMPFLAG 1 | |
5069 | #define BP_HARDWAREFLAG 2 | |
5070 | ||
4a64f543 MS |
5071 | /* Evaluate watchpoint condition expression and check if its value |
5072 | changed. | |
553e4c11 JB |
5073 | |
5074 | P should be a pointer to struct bpstat, but is defined as a void * | |
5075 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
5076 | |
5077 | static int | |
4efb68b1 | 5078 | watchpoint_check (void *p) |
c906108c SS |
5079 | { |
5080 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 5081 | struct watchpoint *b; |
c906108c SS |
5082 | struct frame_info *fr; |
5083 | int within_current_scope; | |
5084 | ||
f431efe5 | 5085 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 5086 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 5087 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 5088 | |
f6bc2008 PA |
5089 | /* If this is a local watchpoint, we only want to check if the |
5090 | watchpoint frame is in scope if the current thread is the thread | |
5091 | that was used to create the watchpoint. */ | |
5092 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 5093 | return WP_IGNORE; |
f6bc2008 | 5094 | |
c906108c SS |
5095 | if (b->exp_valid_block == NULL) |
5096 | within_current_scope = 1; | |
5097 | else | |
5098 | { | |
edb3359d DJ |
5099 | struct frame_info *frame = get_current_frame (); |
5100 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
5101 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
5102 | ||
4a64f543 MS |
5103 | /* in_function_epilogue_p() returns a non-zero value if we're |
5104 | still in the function but the stack frame has already been | |
5105 | invalidated. Since we can't rely on the values of local | |
5106 | variables after the stack has been destroyed, we are treating | |
5107 | the watchpoint in that state as `not changed' without further | |
5108 | checking. Don't mark watchpoints as changed if the current | |
5109 | frame is in an epilogue - even if they are in some other | |
5110 | frame, our view of the stack is likely to be wrong and | |
5111 | frame_find_by_id could error out. */ | |
a0f49112 | 5112 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 5113 | return WP_IGNORE; |
a0f49112 | 5114 | |
101dcfbe | 5115 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 5116 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
5117 | |
5118 | /* If we've gotten confused in the unwinder, we might have | |
5119 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
5120 | if (within_current_scope) |
5121 | { | |
5122 | struct symbol *function; | |
5123 | ||
5124 | function = get_frame_function (fr); | |
5125 | if (function == NULL | |
5126 | || !contained_in (b->exp_valid_block, | |
5127 | SYMBOL_BLOCK_VALUE (function))) | |
5128 | within_current_scope = 0; | |
5129 | } | |
69fbadd5 | 5130 | |
edb3359d | 5131 | if (within_current_scope) |
c906108c SS |
5132 | /* If we end up stopping, the current frame will get selected |
5133 | in normal_stop. So this call to select_frame won't affect | |
5134 | the user. */ | |
0f7d239c | 5135 | select_frame (fr); |
c906108c | 5136 | } |
c5aa993b | 5137 | |
c906108c SS |
5138 | if (within_current_scope) |
5139 | { | |
4a64f543 MS |
5140 | /* We use value_{,free_to_}mark because it could be a *long* |
5141 | time before we return to the command level and call | |
5142 | free_all_values. We can't call free_all_values because we | |
5143 | might be in the middle of evaluating a function call. */ | |
c906108c | 5144 | |
0cf6dd15 | 5145 | int pc = 0; |
9c06b0b4 | 5146 | struct value *mark; |
fa4727a6 DJ |
5147 | struct value *new_val; |
5148 | ||
3a5c3e22 | 5149 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
5150 | /* Since we don't know the exact trigger address (from |
5151 | stopped_data_address), just tell the user we've triggered | |
5152 | a mask watchpoint. */ | |
5153 | return WP_VALUE_CHANGED; | |
5154 | ||
5155 | mark = value_mark (); | |
3a1115a0 | 5156 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 5157 | |
bb9d5f81 PP |
5158 | if (b->val_bitsize != 0) |
5159 | new_val = extract_bitfield_from_watchpoint_value (b, new_val); | |
5160 | ||
4a64f543 MS |
5161 | /* We use value_equal_contents instead of value_equal because |
5162 | the latter coerces an array to a pointer, thus comparing just | |
5163 | the address of the array instead of its contents. This is | |
5164 | not what we want. */ | |
fa4727a6 | 5165 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 5166 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 5167 | { |
fa4727a6 DJ |
5168 | if (new_val != NULL) |
5169 | { | |
5170 | release_value (new_val); | |
5171 | value_free_to_mark (mark); | |
5172 | } | |
c906108c SS |
5173 | bs->old_val = b->val; |
5174 | b->val = new_val; | |
fa4727a6 | 5175 | b->val_valid = 1; |
c906108c SS |
5176 | return WP_VALUE_CHANGED; |
5177 | } | |
5178 | else | |
5179 | { | |
60e1c644 | 5180 | /* Nothing changed. */ |
c906108c | 5181 | value_free_to_mark (mark); |
c906108c SS |
5182 | return WP_VALUE_NOT_CHANGED; |
5183 | } | |
5184 | } | |
5185 | else | |
5186 | { | |
79a45e25 PA |
5187 | struct ui_out *uiout = current_uiout; |
5188 | ||
c906108c | 5189 | /* This seems like the only logical thing to do because |
c5aa993b JM |
5190 | if we temporarily ignored the watchpoint, then when |
5191 | we reenter the block in which it is valid it contains | |
5192 | garbage (in the case of a function, it may have two | |
5193 | garbage values, one before and one after the prologue). | |
5194 | So we can't even detect the first assignment to it and | |
5195 | watch after that (since the garbage may or may not equal | |
5196 | the first value assigned). */ | |
348d480f PA |
5197 | /* We print all the stop information in |
5198 | breakpoint_ops->print_it, but in this case, by the time we | |
5199 | call breakpoint_ops->print_it this bp will be deleted | |
5200 | already. So we have no choice but print the information | |
5201 | here. */ | |
9dc5e2a9 | 5202 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
5203 | ui_out_field_string |
5204 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 5205 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 5206 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
5207 | ui_out_text (uiout, |
5208 | " deleted because the program has left the block in\n\ | |
8b93c638 | 5209 | which its expression is valid.\n"); |
4ce44c66 | 5210 | |
cdac0397 | 5211 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 5212 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 5213 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5214 | |
5215 | return WP_DELETED; | |
5216 | } | |
5217 | } | |
5218 | ||
18a18393 | 5219 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5220 | breakpoint location BL. This function does not check if we should |
5221 | stop, only if BL explains the stop. */ | |
5222 | ||
18a18393 | 5223 | static int |
6c95b8df | 5224 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
5225 | struct address_space *aspace, CORE_ADDR bp_addr, |
5226 | const struct target_waitstatus *ws) | |
18a18393 VP |
5227 | { |
5228 | struct breakpoint *b = bl->owner; | |
5229 | ||
348d480f | 5230 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5231 | gdb_assert (b != NULL); |
5232 | ||
09ac7c10 | 5233 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5234 | } |
5235 | ||
3a5c3e22 PA |
5236 | /* Determine if the watched values have actually changed, and we |
5237 | should stop. If not, set BS->stop to 0. */ | |
5238 | ||
18a18393 VP |
5239 | static void |
5240 | bpstat_check_watchpoint (bpstat bs) | |
5241 | { | |
2bdf28a0 | 5242 | const struct bp_location *bl; |
3a5c3e22 | 5243 | struct watchpoint *b; |
2bdf28a0 JK |
5244 | |
5245 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5246 | bl = bs->bp_location_at; |
2bdf28a0 | 5247 | gdb_assert (bl != NULL); |
3a5c3e22 | 5248 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5249 | gdb_assert (b != NULL); |
18a18393 | 5250 | |
18a18393 | 5251 | { |
18a18393 VP |
5252 | int must_check_value = 0; |
5253 | ||
3a5c3e22 | 5254 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
5255 | /* For a software watchpoint, we must always check the |
5256 | watched value. */ | |
5257 | must_check_value = 1; | |
5258 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5259 | /* We have a hardware watchpoint (read, write, or access) | |
5260 | and the target earlier reported an address watched by | |
5261 | this watchpoint. */ | |
5262 | must_check_value = 1; | |
5263 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 5264 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
5265 | /* We were stopped by a hardware watchpoint, but the target could |
5266 | not report the data address. We must check the watchpoint's | |
5267 | value. Access and read watchpoints are out of luck; without | |
5268 | a data address, we can't figure it out. */ | |
5269 | must_check_value = 1; | |
3a5c3e22 | 5270 | |
18a18393 VP |
5271 | if (must_check_value) |
5272 | { | |
3e43a32a MS |
5273 | char *message |
5274 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 5275 | b->base.number); |
18a18393 VP |
5276 | struct cleanup *cleanups = make_cleanup (xfree, message); |
5277 | int e = catch_errors (watchpoint_check, bs, message, | |
5278 | RETURN_MASK_ALL); | |
5279 | do_cleanups (cleanups); | |
5280 | switch (e) | |
5281 | { | |
5282 | case WP_DELETED: | |
5283 | /* We've already printed what needs to be printed. */ | |
5284 | bs->print_it = print_it_done; | |
5285 | /* Stop. */ | |
5286 | break; | |
60e1c644 PA |
5287 | case WP_IGNORE: |
5288 | bs->print_it = print_it_noop; | |
5289 | bs->stop = 0; | |
5290 | break; | |
18a18393 | 5291 | case WP_VALUE_CHANGED: |
3a5c3e22 | 5292 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 5293 | { |
85d721b8 PA |
5294 | /* There are two cases to consider here: |
5295 | ||
4a64f543 | 5296 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5297 | In that case, trust the target, and always report |
5298 | the watchpoint hit to the user. Even though | |
5299 | reads don't cause value changes, the value may | |
5300 | have changed since the last time it was read, and | |
5301 | since we're not trapping writes, we will not see | |
5302 | those, and as such we should ignore our notion of | |
5303 | old value. | |
5304 | ||
4a64f543 | 5305 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5306 | reads and writes. There are two ways this may |
5307 | happen: | |
5308 | ||
4a64f543 | 5309 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5310 | reads only, but can break on accesses (reads or |
5311 | writes), such as e.g., x86. We detect this case | |
5312 | at the time we try to insert read watchpoints. | |
5313 | ||
4a64f543 | 5314 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5315 | watchpoints, but, the user set an access or write |
5316 | watchpoint watching the same memory as this read | |
5317 | watchpoint. | |
5318 | ||
5319 | If we're watching memory writes as well as reads, | |
5320 | ignore watchpoint hits when we find that the | |
5321 | value hasn't changed, as reads don't cause | |
5322 | changes. This still gives false positives when | |
5323 | the program writes the same value to memory as | |
5324 | what there was already in memory (we will confuse | |
5325 | it for a read), but it's much better than | |
5326 | nothing. */ | |
5327 | ||
5328 | int other_write_watchpoint = 0; | |
5329 | ||
5330 | if (bl->watchpoint_type == hw_read) | |
5331 | { | |
5332 | struct breakpoint *other_b; | |
5333 | ||
5334 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5335 | if (other_b->type == bp_hardware_watchpoint |
5336 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5337 | { |
3a5c3e22 PA |
5338 | struct watchpoint *other_w = |
5339 | (struct watchpoint *) other_b; | |
5340 | ||
5341 | if (other_w->watchpoint_triggered | |
5342 | == watch_triggered_yes) | |
5343 | { | |
5344 | other_write_watchpoint = 1; | |
5345 | break; | |
5346 | } | |
85d721b8 PA |
5347 | } |
5348 | } | |
5349 | ||
5350 | if (other_write_watchpoint | |
5351 | || bl->watchpoint_type == hw_access) | |
5352 | { | |
5353 | /* We're watching the same memory for writes, | |
5354 | and the value changed since the last time we | |
5355 | updated it, so this trap must be for a write. | |
5356 | Ignore it. */ | |
5357 | bs->print_it = print_it_noop; | |
5358 | bs->stop = 0; | |
5359 | } | |
18a18393 VP |
5360 | } |
5361 | break; | |
5362 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
5363 | if (b->base.type == bp_hardware_watchpoint |
5364 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
5365 | { |
5366 | /* Don't stop: write watchpoints shouldn't fire if | |
5367 | the value hasn't changed. */ | |
5368 | bs->print_it = print_it_noop; | |
5369 | bs->stop = 0; | |
5370 | } | |
5371 | /* Stop. */ | |
5372 | break; | |
5373 | default: | |
5374 | /* Can't happen. */ | |
5375 | case 0: | |
5376 | /* Error from catch_errors. */ | |
3a5c3e22 | 5377 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 5378 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
5379 | /* We've already printed what needs to be printed. */ |
5380 | bs->print_it = print_it_done; | |
5381 | break; | |
5382 | } | |
5383 | } | |
5384 | else /* must_check_value == 0 */ | |
5385 | { | |
5386 | /* This is a case where some watchpoint(s) triggered, but | |
5387 | not at the address of this watchpoint, or else no | |
5388 | watchpoint triggered after all. So don't print | |
5389 | anything for this watchpoint. */ | |
5390 | bs->print_it = print_it_noop; | |
5391 | bs->stop = 0; | |
5392 | } | |
5393 | } | |
5394 | } | |
5395 | ||
7d4df6a4 DE |
5396 | /* For breakpoints that are currently marked as telling gdb to stop, |
5397 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5398 | of breakpoint referred to by BS. If we should not stop for this |
5399 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5400 | |
18a18393 VP |
5401 | static void |
5402 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5403 | { | |
2bdf28a0 JK |
5404 | const struct bp_location *bl; |
5405 | struct breakpoint *b; | |
7d4df6a4 DE |
5406 | int value_is_zero = 0; |
5407 | struct expression *cond; | |
5408 | ||
5409 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5410 | |
5411 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5412 | bl = bs->bp_location_at; |
2bdf28a0 | 5413 | gdb_assert (bl != NULL); |
f431efe5 | 5414 | b = bs->breakpoint_at; |
2bdf28a0 | 5415 | gdb_assert (b != NULL); |
18a18393 | 5416 | |
b775012e LM |
5417 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5418 | need to do so again since GDB does not know if we stopped due to a | |
5419 | breakpoint or a single step breakpoint. */ | |
5420 | ||
18a18393 | 5421 | if (frame_id_p (b->frame_id) |
edb3359d | 5422 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5423 | { |
7d4df6a4 DE |
5424 | bs->stop = 0; |
5425 | return; | |
5426 | } | |
60e1c644 | 5427 | |
12ab52e9 PA |
5428 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5429 | evaluating the condition if this isn't the specified | |
5430 | thread/task. */ | |
5431 | if ((b->thread != -1 && b->thread != pid_to_thread_id (ptid)) | |
5432 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) | |
5433 | ||
6c1b0f7b DE |
5434 | { |
5435 | bs->stop = 0; | |
5436 | return; | |
5437 | } | |
5438 | ||
6dddc817 DE |
5439 | /* Evaluate extension language breakpoints that have a "stop" method |
5440 | implemented. */ | |
5441 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5442 | |
7d4df6a4 DE |
5443 | if (is_watchpoint (b)) |
5444 | { | |
5445 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5446 | |
7d4df6a4 DE |
5447 | cond = w->cond_exp; |
5448 | } | |
5449 | else | |
5450 | cond = bl->cond; | |
60e1c644 | 5451 | |
7d4df6a4 DE |
5452 | if (cond && b->disposition != disp_del_at_next_stop) |
5453 | { | |
5454 | int within_current_scope = 1; | |
5455 | struct watchpoint * w; | |
60e1c644 | 5456 | |
7d4df6a4 DE |
5457 | /* We use value_mark and value_free_to_mark because it could |
5458 | be a long time before we return to the command level and | |
5459 | call free_all_values. We can't call free_all_values | |
5460 | because we might be in the middle of evaluating a | |
5461 | function call. */ | |
5462 | struct value *mark = value_mark (); | |
5463 | ||
5464 | if (is_watchpoint (b)) | |
5465 | w = (struct watchpoint *) b; | |
5466 | else | |
5467 | w = NULL; | |
5468 | ||
5469 | /* Need to select the frame, with all that implies so that | |
5470 | the conditions will have the right context. Because we | |
5471 | use the frame, we will not see an inlined function's | |
5472 | variables when we arrive at a breakpoint at the start | |
5473 | of the inlined function; the current frame will be the | |
5474 | call site. */ | |
5475 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5476 | select_frame (get_current_frame ()); | |
5477 | else | |
18a18393 | 5478 | { |
7d4df6a4 DE |
5479 | struct frame_info *frame; |
5480 | ||
5481 | /* For local watchpoint expressions, which particular | |
5482 | instance of a local is being watched matters, so we | |
5483 | keep track of the frame to evaluate the expression | |
5484 | in. To evaluate the condition however, it doesn't | |
5485 | really matter which instantiation of the function | |
5486 | where the condition makes sense triggers the | |
5487 | watchpoint. This allows an expression like "watch | |
5488 | global if q > 10" set in `func', catch writes to | |
5489 | global on all threads that call `func', or catch | |
5490 | writes on all recursive calls of `func' by a single | |
5491 | thread. We simply always evaluate the condition in | |
5492 | the innermost frame that's executing where it makes | |
5493 | sense to evaluate the condition. It seems | |
5494 | intuitive. */ | |
5495 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5496 | if (frame != NULL) | |
5497 | select_frame (frame); | |
5498 | else | |
5499 | within_current_scope = 0; | |
18a18393 | 5500 | } |
7d4df6a4 DE |
5501 | if (within_current_scope) |
5502 | value_is_zero | |
5503 | = catch_errors (breakpoint_cond_eval, cond, | |
5504 | "Error in testing breakpoint condition:\n", | |
5505 | RETURN_MASK_ALL); | |
5506 | else | |
18a18393 | 5507 | { |
7d4df6a4 DE |
5508 | warning (_("Watchpoint condition cannot be tested " |
5509 | "in the current scope")); | |
5510 | /* If we failed to set the right context for this | |
5511 | watchpoint, unconditionally report it. */ | |
5512 | value_is_zero = 0; | |
18a18393 | 5513 | } |
7d4df6a4 DE |
5514 | /* FIXME-someday, should give breakpoint #. */ |
5515 | value_free_to_mark (mark); | |
18a18393 | 5516 | } |
7d4df6a4 DE |
5517 | |
5518 | if (cond && value_is_zero) | |
5519 | { | |
5520 | bs->stop = 0; | |
5521 | } | |
7d4df6a4 DE |
5522 | else if (b->ignore_count > 0) |
5523 | { | |
5524 | b->ignore_count--; | |
5525 | bs->stop = 0; | |
5526 | /* Increase the hit count even though we don't stop. */ | |
5527 | ++(b->hit_count); | |
5528 | observer_notify_breakpoint_modified (b); | |
5529 | } | |
18a18393 VP |
5530 | } |
5531 | ||
5532 | ||
9709f61c | 5533 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5534 | BP_ADDR in thread PTID. |
c906108c | 5535 | |
d983da9c | 5536 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5537 | don't understand this stop. Result is a chain of bpstat's such |
5538 | that: | |
c906108c | 5539 | |
c5aa993b | 5540 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5541 | |
c5aa993b | 5542 | if we understand why we stopped, the result is not null. |
c906108c | 5543 | |
c5aa993b JM |
5544 | Each element of the chain refers to a particular breakpoint or |
5545 | watchpoint at which we have stopped. (We may have stopped for | |
5546 | several reasons concurrently.) | |
c906108c | 5547 | |
c5aa993b JM |
5548 | Each element of the chain has valid next, breakpoint_at, |
5549 | commands, FIXME??? fields. */ | |
c906108c SS |
5550 | |
5551 | bpstat | |
6c95b8df | 5552 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5553 | CORE_ADDR bp_addr, ptid_t ptid, |
5554 | const struct target_waitstatus *ws) | |
c906108c | 5555 | { |
0d381245 | 5556 | struct breakpoint *b = NULL; |
afe38095 | 5557 | struct bp_location *bl; |
20874c92 | 5558 | struct bp_location *loc; |
5760d0ab JK |
5559 | /* First item of allocated bpstat's. */ |
5560 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5561 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5562 | bpstat bs; |
20874c92 | 5563 | int ix; |
429374b8 | 5564 | int need_remove_insert; |
f431efe5 | 5565 | int removed_any; |
c906108c | 5566 | |
f431efe5 PA |
5567 | /* First, build the bpstat chain with locations that explain a |
5568 | target stop, while being careful to not set the target running, | |
5569 | as that may invalidate locations (in particular watchpoint | |
5570 | locations are recreated). Resuming will happen here with | |
5571 | breakpoint conditions or watchpoint expressions that include | |
5572 | inferior function calls. */ | |
c5aa993b | 5573 | |
429374b8 JK |
5574 | ALL_BREAKPOINTS (b) |
5575 | { | |
5576 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
5577 | continue; | |
a5606eee | 5578 | |
429374b8 JK |
5579 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5580 | { | |
4a64f543 MS |
5581 | /* For hardware watchpoints, we look only at the first |
5582 | location. The watchpoint_check function will work on the | |
5583 | entire expression, not the individual locations. For | |
5584 | read watchpoints, the watchpoints_triggered function has | |
5585 | checked all locations already. */ | |
429374b8 JK |
5586 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5587 | break; | |
18a18393 | 5588 | |
f6592439 | 5589 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5590 | continue; |
c5aa993b | 5591 | |
09ac7c10 | 5592 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5593 | continue; |
c5aa993b | 5594 | |
4a64f543 MS |
5595 | /* Come here if it's a watchpoint, or if the break address |
5596 | matches. */ | |
c5aa993b | 5597 | |
4a64f543 MS |
5598 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5599 | explain stop. */ | |
c5aa993b | 5600 | |
f431efe5 PA |
5601 | /* Assume we stop. Should we find a watchpoint that is not |
5602 | actually triggered, or if the condition of the breakpoint | |
5603 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5604 | bs->stop = 1; |
5605 | bs->print = 1; | |
d983da9c | 5606 | |
f431efe5 PA |
5607 | /* If this is a scope breakpoint, mark the associated |
5608 | watchpoint as triggered so that we will handle the | |
5609 | out-of-scope event. We'll get to the watchpoint next | |
5610 | iteration. */ | |
d0fb5eae | 5611 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5612 | { |
5613 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5614 | ||
5615 | w->watchpoint_triggered = watch_triggered_yes; | |
5616 | } | |
f431efe5 PA |
5617 | } |
5618 | } | |
5619 | ||
5620 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
5621 | { | |
f1310107 | 5622 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 5623 | { |
5760d0ab | 5624 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
5625 | /* For hits of moribund locations, we should just proceed. */ |
5626 | bs->stop = 0; | |
5627 | bs->print = 0; | |
5628 | bs->print_it = print_it_noop; | |
5629 | } | |
5630 | } | |
5631 | ||
edcc5120 TT |
5632 | /* A bit of special processing for shlib breakpoints. We need to |
5633 | process solib loading here, so that the lists of loaded and | |
5634 | unloaded libraries are correct before we handle "catch load" and | |
5635 | "catch unload". */ | |
5636 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5637 | { | |
5d268276 | 5638 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5639 | { |
5640 | handle_solib_event (); | |
5641 | break; | |
5642 | } | |
5643 | } | |
5644 | ||
f431efe5 PA |
5645 | /* Now go through the locations that caused the target to stop, and |
5646 | check whether we're interested in reporting this stop to higher | |
5647 | layers, or whether we should resume the target transparently. */ | |
5648 | ||
5649 | removed_any = 0; | |
5650 | ||
5760d0ab | 5651 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5652 | { |
5653 | if (!bs->stop) | |
5654 | continue; | |
5655 | ||
f431efe5 | 5656 | b = bs->breakpoint_at; |
348d480f PA |
5657 | b->ops->check_status (bs); |
5658 | if (bs->stop) | |
28010a5d | 5659 | { |
348d480f | 5660 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5661 | |
429374b8 JK |
5662 | if (bs->stop) |
5663 | { | |
5664 | ++(b->hit_count); | |
8d3788bd | 5665 | observer_notify_breakpoint_modified (b); |
c906108c | 5666 | |
4a64f543 | 5667 | /* We will stop here. */ |
429374b8 JK |
5668 | if (b->disposition == disp_disable) |
5669 | { | |
816338b5 SS |
5670 | --(b->enable_count); |
5671 | if (b->enable_count <= 0 | |
5672 | && b->enable_state != bp_permanent) | |
429374b8 | 5673 | b->enable_state = bp_disabled; |
f431efe5 | 5674 | removed_any = 1; |
429374b8 JK |
5675 | } |
5676 | if (b->silent) | |
5677 | bs->print = 0; | |
5678 | bs->commands = b->commands; | |
9add0f1b | 5679 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5680 | if (command_line_is_silent (bs->commands |
5681 | ? bs->commands->commands : NULL)) | |
5682 | bs->print = 0; | |
9d6e6e84 HZ |
5683 | |
5684 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5685 | } |
5686 | ||
348d480f | 5687 | } |
a9b3a50f PA |
5688 | |
5689 | /* Print nothing for this entry if we don't stop or don't | |
5690 | print. */ | |
5691 | if (!bs->stop || !bs->print) | |
5692 | bs->print_it = print_it_noop; | |
429374b8 | 5693 | } |
876fa593 | 5694 | |
d983da9c DJ |
5695 | /* If we aren't stopping, the value of some hardware watchpoint may |
5696 | not have changed, but the intermediate memory locations we are | |
5697 | watching may have. Don't bother if we're stopping; this will get | |
5698 | done later. */ | |
d832cb68 | 5699 | need_remove_insert = 0; |
5760d0ab JK |
5700 | if (! bpstat_causes_stop (bs_head)) |
5701 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5702 | if (!bs->stop |
f431efe5 PA |
5703 | && bs->breakpoint_at |
5704 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5705 | { |
3a5c3e22 PA |
5706 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5707 | ||
5708 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5709 | need_remove_insert = 1; |
d983da9c DJ |
5710 | } |
5711 | ||
d832cb68 | 5712 | if (need_remove_insert) |
44702360 | 5713 | update_global_location_list (UGLL_MAY_INSERT); |
f431efe5 | 5714 | else if (removed_any) |
44702360 | 5715 | update_global_location_list (UGLL_DONT_INSERT); |
d832cb68 | 5716 | |
5760d0ab | 5717 | return bs_head; |
c906108c | 5718 | } |
628fe4e4 JK |
5719 | |
5720 | static void | |
5721 | handle_jit_event (void) | |
5722 | { | |
5723 | struct frame_info *frame; | |
5724 | struct gdbarch *gdbarch; | |
5725 | ||
5726 | /* Switch terminal for any messages produced by | |
5727 | breakpoint_re_set. */ | |
5728 | target_terminal_ours_for_output (); | |
5729 | ||
5730 | frame = get_current_frame (); | |
5731 | gdbarch = get_frame_arch (frame); | |
5732 | ||
5733 | jit_event_handler (gdbarch); | |
5734 | ||
5735 | target_terminal_inferior (); | |
5736 | } | |
5737 | ||
5738 | /* Prepare WHAT final decision for infrun. */ | |
5739 | ||
5740 | /* Decide what infrun needs to do with this bpstat. */ | |
5741 | ||
c906108c | 5742 | struct bpstat_what |
0e30163f | 5743 | bpstat_what (bpstat bs_head) |
c906108c | 5744 | { |
c906108c | 5745 | struct bpstat_what retval; |
628fe4e4 | 5746 | int jit_event = 0; |
0e30163f | 5747 | bpstat bs; |
c906108c | 5748 | |
628fe4e4 | 5749 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5750 | retval.call_dummy = STOP_NONE; |
186c406b | 5751 | retval.is_longjmp = 0; |
628fe4e4 | 5752 | |
0e30163f | 5753 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5754 | { |
628fe4e4 JK |
5755 | /* Extract this BS's action. After processing each BS, we check |
5756 | if its action overrides all we've seem so far. */ | |
5757 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5758 | enum bptype bptype; | |
5759 | ||
c906108c | 5760 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5761 | { |
5762 | /* I suspect this can happen if it was a momentary | |
5763 | breakpoint which has since been deleted. */ | |
5764 | bptype = bp_none; | |
5765 | } | |
20874c92 | 5766 | else |
f431efe5 | 5767 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5768 | |
5769 | switch (bptype) | |
c906108c SS |
5770 | { |
5771 | case bp_none: | |
628fe4e4 | 5772 | break; |
c906108c SS |
5773 | case bp_breakpoint: |
5774 | case bp_hardware_breakpoint: | |
5775 | case bp_until: | |
5776 | case bp_finish: | |
a9b3a50f | 5777 | case bp_shlib_event: |
c906108c SS |
5778 | if (bs->stop) |
5779 | { | |
5780 | if (bs->print) | |
628fe4e4 | 5781 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5782 | else |
628fe4e4 | 5783 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5784 | } |
5785 | else | |
628fe4e4 | 5786 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5787 | break; |
5788 | case bp_watchpoint: | |
5789 | case bp_hardware_watchpoint: | |
5790 | case bp_read_watchpoint: | |
5791 | case bp_access_watchpoint: | |
5792 | if (bs->stop) | |
5793 | { | |
5794 | if (bs->print) | |
628fe4e4 | 5795 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5796 | else |
628fe4e4 | 5797 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5798 | } |
5799 | else | |
628fe4e4 JK |
5800 | { |
5801 | /* There was a watchpoint, but we're not stopping. | |
5802 | This requires no further action. */ | |
5803 | } | |
c906108c SS |
5804 | break; |
5805 | case bp_longjmp: | |
e2e4d78b | 5806 | case bp_longjmp_call_dummy: |
186c406b | 5807 | case bp_exception: |
628fe4e4 | 5808 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5809 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5810 | break; |
5811 | case bp_longjmp_resume: | |
186c406b | 5812 | case bp_exception_resume: |
628fe4e4 | 5813 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5814 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5815 | break; |
5816 | case bp_step_resume: | |
5817 | if (bs->stop) | |
628fe4e4 JK |
5818 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5819 | else | |
c906108c | 5820 | { |
628fe4e4 JK |
5821 | /* It is for the wrong frame. */ |
5822 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5823 | } |
c906108c | 5824 | break; |
2c03e5be PA |
5825 | case bp_hp_step_resume: |
5826 | if (bs->stop) | |
5827 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5828 | else | |
5829 | { | |
5830 | /* It is for the wrong frame. */ | |
5831 | this_action = BPSTAT_WHAT_SINGLE; | |
5832 | } | |
5833 | break; | |
c906108c | 5834 | case bp_watchpoint_scope: |
c4093a6a | 5835 | case bp_thread_event: |
1900040c | 5836 | case bp_overlay_event: |
0fd8e87f | 5837 | case bp_longjmp_master: |
aa7d318d | 5838 | case bp_std_terminate_master: |
186c406b | 5839 | case bp_exception_master: |
628fe4e4 | 5840 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5841 | break; |
ce78b96d | 5842 | case bp_catchpoint: |
c5aa993b JM |
5843 | if (bs->stop) |
5844 | { | |
5845 | if (bs->print) | |
628fe4e4 | 5846 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5847 | else |
628fe4e4 | 5848 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5849 | } |
5850 | else | |
628fe4e4 JK |
5851 | { |
5852 | /* There was a catchpoint, but we're not stopping. | |
5853 | This requires no further action. */ | |
5854 | } | |
5855 | break; | |
628fe4e4 JK |
5856 | case bp_jit_event: |
5857 | jit_event = 1; | |
5858 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5859 | break; |
c906108c | 5860 | case bp_call_dummy: |
53a5351d JM |
5861 | /* Make sure the action is stop (silent or noisy), |
5862 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5863 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5864 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5865 | break; |
5866 | case bp_std_terminate: | |
5867 | /* Make sure the action is stop (silent or noisy), | |
5868 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5869 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5870 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5871 | break; |
1042e4c0 | 5872 | case bp_tracepoint: |
7a697b8d | 5873 | case bp_fast_tracepoint: |
0fb4aa4b | 5874 | case bp_static_tracepoint: |
1042e4c0 SS |
5875 | /* Tracepoint hits should not be reported back to GDB, and |
5876 | if one got through somehow, it should have been filtered | |
5877 | out already. */ | |
5878 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5879 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5880 | break; |
5881 | case bp_gnu_ifunc_resolver: | |
5882 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5883 | this_action = BPSTAT_WHAT_SINGLE; | |
5884 | break; | |
5885 | case bp_gnu_ifunc_resolver_return: | |
5886 | /* The breakpoint will be removed, execution will restart from the | |
5887 | PC of the former breakpoint. */ | |
5888 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5889 | break; | |
e7e0cddf SS |
5890 | |
5891 | case bp_dprintf: | |
a11cfd87 HZ |
5892 | if (bs->stop) |
5893 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5894 | else | |
5895 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5896 | break; |
5897 | ||
628fe4e4 JK |
5898 | default: |
5899 | internal_error (__FILE__, __LINE__, | |
5900 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5901 | } |
628fe4e4 JK |
5902 | |
5903 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5904 | } |
628fe4e4 | 5905 | |
0e30163f JK |
5906 | /* These operations may affect the bs->breakpoint_at state so they are |
5907 | delayed after MAIN_ACTION is decided above. */ | |
5908 | ||
628fe4e4 JK |
5909 | if (jit_event) |
5910 | { | |
5911 | if (debug_infrun) | |
5912 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5913 | ||
5914 | handle_jit_event (); | |
5915 | } | |
5916 | ||
0e30163f JK |
5917 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5918 | { | |
5919 | struct breakpoint *b = bs->breakpoint_at; | |
5920 | ||
5921 | if (b == NULL) | |
5922 | continue; | |
5923 | switch (b->type) | |
5924 | { | |
5925 | case bp_gnu_ifunc_resolver: | |
5926 | gnu_ifunc_resolver_stop (b); | |
5927 | break; | |
5928 | case bp_gnu_ifunc_resolver_return: | |
5929 | gnu_ifunc_resolver_return_stop (b); | |
5930 | break; | |
5931 | } | |
5932 | } | |
5933 | ||
c906108c SS |
5934 | return retval; |
5935 | } | |
5936 | ||
5937 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5938 | without hardware support). This isn't related to a specific bpstat, | |
5939 | just to things like whether watchpoints are set. */ | |
5940 | ||
c5aa993b | 5941 | int |
fba45db2 | 5942 | bpstat_should_step (void) |
c906108c SS |
5943 | { |
5944 | struct breakpoint *b; | |
cc59ec59 | 5945 | |
c906108c | 5946 | ALL_BREAKPOINTS (b) |
717a8278 | 5947 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5948 | return 1; |
c906108c SS |
5949 | return 0; |
5950 | } | |
5951 | ||
67822962 PA |
5952 | int |
5953 | bpstat_causes_stop (bpstat bs) | |
5954 | { | |
5955 | for (; bs != NULL; bs = bs->next) | |
5956 | if (bs->stop) | |
5957 | return 1; | |
5958 | ||
5959 | return 0; | |
5960 | } | |
5961 | ||
c906108c | 5962 | \f |
c5aa993b | 5963 | |
170b53b2 UW |
5964 | /* Compute a string of spaces suitable to indent the next line |
5965 | so it starts at the position corresponding to the table column | |
5966 | named COL_NAME in the currently active table of UIOUT. */ | |
5967 | ||
5968 | static char * | |
5969 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5970 | { | |
5971 | static char wrap_indent[80]; | |
5972 | int i, total_width, width, align; | |
5973 | char *text; | |
5974 | ||
5975 | total_width = 0; | |
5976 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5977 | { | |
5978 | if (strcmp (text, col_name) == 0) | |
5979 | { | |
5980 | gdb_assert (total_width < sizeof wrap_indent); | |
5981 | memset (wrap_indent, ' ', total_width); | |
5982 | wrap_indent[total_width] = 0; | |
5983 | ||
5984 | return wrap_indent; | |
5985 | } | |
5986 | ||
5987 | total_width += width + 1; | |
5988 | } | |
5989 | ||
5990 | return NULL; | |
5991 | } | |
5992 | ||
b775012e LM |
5993 | /* Determine if the locations of this breakpoint will have their conditions |
5994 | evaluated by the target, host or a mix of both. Returns the following: | |
5995 | ||
5996 | "host": Host evals condition. | |
5997 | "host or target": Host or Target evals condition. | |
5998 | "target": Target evals condition. | |
5999 | */ | |
6000 | ||
6001 | static const char * | |
6002 | bp_condition_evaluator (struct breakpoint *b) | |
6003 | { | |
6004 | struct bp_location *bl; | |
6005 | char host_evals = 0; | |
6006 | char target_evals = 0; | |
6007 | ||
6008 | if (!b) | |
6009 | return NULL; | |
6010 | ||
6011 | if (!is_breakpoint (b)) | |
6012 | return NULL; | |
6013 | ||
6014 | if (gdb_evaluates_breakpoint_condition_p () | |
6015 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6016 | return condition_evaluation_host; | |
6017 | ||
6018 | for (bl = b->loc; bl; bl = bl->next) | |
6019 | { | |
6020 | if (bl->cond_bytecode) | |
6021 | target_evals++; | |
6022 | else | |
6023 | host_evals++; | |
6024 | } | |
6025 | ||
6026 | if (host_evals && target_evals) | |
6027 | return condition_evaluation_both; | |
6028 | else if (target_evals) | |
6029 | return condition_evaluation_target; | |
6030 | else | |
6031 | return condition_evaluation_host; | |
6032 | } | |
6033 | ||
6034 | /* Determine the breakpoint location's condition evaluator. This is | |
6035 | similar to bp_condition_evaluator, but for locations. */ | |
6036 | ||
6037 | static const char * | |
6038 | bp_location_condition_evaluator (struct bp_location *bl) | |
6039 | { | |
6040 | if (bl && !is_breakpoint (bl->owner)) | |
6041 | return NULL; | |
6042 | ||
6043 | if (gdb_evaluates_breakpoint_condition_p () | |
6044 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
6045 | return condition_evaluation_host; | |
6046 | ||
6047 | if (bl && bl->cond_bytecode) | |
6048 | return condition_evaluation_target; | |
6049 | else | |
6050 | return condition_evaluation_host; | |
6051 | } | |
6052 | ||
859825b8 JK |
6053 | /* Print the LOC location out of the list of B->LOC locations. */ |
6054 | ||
170b53b2 UW |
6055 | static void |
6056 | print_breakpoint_location (struct breakpoint *b, | |
6057 | struct bp_location *loc) | |
0d381245 | 6058 | { |
79a45e25 | 6059 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
6060 | struct cleanup *old_chain = save_current_program_space (); |
6061 | ||
859825b8 JK |
6062 | if (loc != NULL && loc->shlib_disabled) |
6063 | loc = NULL; | |
6064 | ||
6c95b8df PA |
6065 | if (loc != NULL) |
6066 | set_current_program_space (loc->pspace); | |
6067 | ||
56435ebe TT |
6068 | if (b->display_canonical) |
6069 | ui_out_field_string (uiout, "what", b->addr_string); | |
2f202fde | 6070 | else if (loc && loc->symtab) |
0d381245 VP |
6071 | { |
6072 | struct symbol *sym | |
6073 | = find_pc_sect_function (loc->address, loc->section); | |
6074 | if (sym) | |
6075 | { | |
6076 | ui_out_text (uiout, "in "); | |
6077 | ui_out_field_string (uiout, "func", | |
6078 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
6079 | ui_out_text (uiout, " "); |
6080 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
6081 | ui_out_text (uiout, "at "); | |
0d381245 | 6082 | } |
05cba821 JK |
6083 | ui_out_field_string (uiout, "file", |
6084 | symtab_to_filename_for_display (loc->symtab)); | |
0d381245 | 6085 | ui_out_text (uiout, ":"); |
05cba821 | 6086 | |
0d381245 | 6087 | if (ui_out_is_mi_like_p (uiout)) |
2f202fde JK |
6088 | ui_out_field_string (uiout, "fullname", |
6089 | symtab_to_fullname (loc->symtab)); | |
0d381245 | 6090 | |
f8eba3c6 | 6091 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 6092 | } |
859825b8 | 6093 | else if (loc) |
0d381245 | 6094 | { |
f99d8bf4 PA |
6095 | struct ui_file *stb = mem_fileopen (); |
6096 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 6097 | |
f99d8bf4 | 6098 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 6099 | demangle, ""); |
0d381245 | 6100 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
6101 | |
6102 | do_cleanups (stb_chain); | |
0d381245 | 6103 | } |
859825b8 JK |
6104 | else |
6105 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 6106 | |
b775012e LM |
6107 | if (loc && is_breakpoint (b) |
6108 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
6109 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
6110 | { | |
6111 | ui_out_text (uiout, " ("); | |
6112 | ui_out_field_string (uiout, "evaluated-by", | |
6113 | bp_location_condition_evaluator (loc)); | |
6114 | ui_out_text (uiout, ")"); | |
6115 | } | |
6116 | ||
6c95b8df | 6117 | do_cleanups (old_chain); |
0d381245 VP |
6118 | } |
6119 | ||
269b11a2 PA |
6120 | static const char * |
6121 | bptype_string (enum bptype type) | |
c906108c | 6122 | { |
c4093a6a JM |
6123 | struct ep_type_description |
6124 | { | |
6125 | enum bptype type; | |
6126 | char *description; | |
6127 | }; | |
6128 | static struct ep_type_description bptypes[] = | |
c906108c | 6129 | { |
c5aa993b JM |
6130 | {bp_none, "?deleted?"}, |
6131 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 6132 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
6133 | {bp_until, "until"}, |
6134 | {bp_finish, "finish"}, | |
6135 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 6136 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
6137 | {bp_read_watchpoint, "read watchpoint"}, |
6138 | {bp_access_watchpoint, "acc watchpoint"}, | |
6139 | {bp_longjmp, "longjmp"}, | |
6140 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 6141 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
6142 | {bp_exception, "exception"}, |
6143 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 6144 | {bp_step_resume, "step resume"}, |
2c03e5be | 6145 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
6146 | {bp_watchpoint_scope, "watchpoint scope"}, |
6147 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 6148 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 6149 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 6150 | {bp_thread_event, "thread events"}, |
1900040c | 6151 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 6152 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 6153 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 6154 | {bp_exception_master, "exception master"}, |
ce78b96d | 6155 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 6156 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 6157 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 6158 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 6159 | {bp_dprintf, "dprintf"}, |
4efc6507 | 6160 | {bp_jit_event, "jit events"}, |
0e30163f JK |
6161 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
6162 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 6163 | }; |
269b11a2 PA |
6164 | |
6165 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
6166 | || ((int) type != bptypes[(int) type].type)) | |
6167 | internal_error (__FILE__, __LINE__, | |
6168 | _("bptypes table does not describe type #%d."), | |
6169 | (int) type); | |
6170 | ||
6171 | return bptypes[(int) type].description; | |
6172 | } | |
6173 | ||
998580f1 MK |
6174 | /* For MI, output a field named 'thread-groups' with a list as the value. |
6175 | For CLI, prefix the list with the string 'inf'. */ | |
6176 | ||
6177 | static void | |
6178 | output_thread_groups (struct ui_out *uiout, | |
6179 | const char *field_name, | |
6180 | VEC(int) *inf_num, | |
6181 | int mi_only) | |
6182 | { | |
752eb8b4 | 6183 | struct cleanup *back_to; |
998580f1 MK |
6184 | int is_mi = ui_out_is_mi_like_p (uiout); |
6185 | int inf; | |
6186 | int i; | |
6187 | ||
6188 | /* For backward compatibility, don't display inferiors in CLI unless | |
6189 | there are several. Always display them for MI. */ | |
6190 | if (!is_mi && mi_only) | |
6191 | return; | |
6192 | ||
752eb8b4 TT |
6193 | back_to = make_cleanup_ui_out_list_begin_end (uiout, field_name); |
6194 | ||
998580f1 MK |
6195 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6196 | { | |
6197 | if (is_mi) | |
6198 | { | |
6199 | char mi_group[10]; | |
6200 | ||
6201 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
6202 | ui_out_field_string (uiout, NULL, mi_group); | |
6203 | } | |
6204 | else | |
6205 | { | |
6206 | if (i == 0) | |
6207 | ui_out_text (uiout, " inf "); | |
6208 | else | |
6209 | ui_out_text (uiout, ", "); | |
6210 | ||
6211 | ui_out_text (uiout, plongest (inf)); | |
6212 | } | |
6213 | } | |
6214 | ||
6215 | do_cleanups (back_to); | |
6216 | } | |
6217 | ||
269b11a2 PA |
6218 | /* Print B to gdb_stdout. */ |
6219 | ||
6220 | static void | |
6221 | print_one_breakpoint_location (struct breakpoint *b, | |
6222 | struct bp_location *loc, | |
6223 | int loc_number, | |
6224 | struct bp_location **last_loc, | |
269b11a2 PA |
6225 | int allflag) |
6226 | { | |
6227 | struct command_line *l; | |
c2c6d25f | 6228 | static char bpenables[] = "nynny"; |
c906108c | 6229 | |
79a45e25 | 6230 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6231 | int header_of_multiple = 0; |
6232 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6233 | struct value_print_options opts; |
6234 | ||
6235 | get_user_print_options (&opts); | |
0d381245 VP |
6236 | |
6237 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6238 | /* See comment in print_one_breakpoint concerning treatment of |
6239 | breakpoints with single disabled location. */ | |
0d381245 VP |
6240 | if (loc == NULL |
6241 | && (b->loc != NULL | |
6242 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6243 | header_of_multiple = 1; | |
6244 | if (loc == NULL) | |
6245 | loc = b->loc; | |
6246 | ||
c4093a6a JM |
6247 | annotate_record (); |
6248 | ||
6249 | /* 1 */ | |
6250 | annotate_field (0); | |
0d381245 VP |
6251 | if (part_of_multiple) |
6252 | { | |
6253 | char *formatted; | |
0c6773c1 | 6254 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
6255 | ui_out_field_string (uiout, "number", formatted); |
6256 | xfree (formatted); | |
6257 | } | |
6258 | else | |
6259 | { | |
6260 | ui_out_field_int (uiout, "number", b->number); | |
6261 | } | |
c4093a6a JM |
6262 | |
6263 | /* 2 */ | |
6264 | annotate_field (1); | |
0d381245 VP |
6265 | if (part_of_multiple) |
6266 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
6267 | else |
6268 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
6269 | |
6270 | /* 3 */ | |
6271 | annotate_field (2); | |
0d381245 VP |
6272 | if (part_of_multiple) |
6273 | ui_out_field_skip (uiout, "disp"); | |
6274 | else | |
2cec12e5 | 6275 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 6276 | |
c4093a6a JM |
6277 | |
6278 | /* 4 */ | |
6279 | annotate_field (3); | |
0d381245 | 6280 | if (part_of_multiple) |
54e52265 | 6281 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6282 | else |
4a64f543 MS |
6283 | ui_out_field_fmt (uiout, "enabled", "%c", |
6284 | bpenables[(int) b->enable_state]); | |
54e52265 | 6285 | ui_out_spaces (uiout, 2); |
0d381245 | 6286 | |
c4093a6a JM |
6287 | |
6288 | /* 5 and 6 */ | |
3086aeae | 6289 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6290 | { |
4a64f543 MS |
6291 | /* Although the print_one can possibly print all locations, |
6292 | calling it here is not likely to get any nice result. So, | |
6293 | make sure there's just one location. */ | |
0d381245 | 6294 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6295 | b->ops->print_one (b, last_loc); |
0d381245 | 6296 | } |
3086aeae DJ |
6297 | else |
6298 | switch (b->type) | |
6299 | { | |
6300 | case bp_none: | |
6301 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6302 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6303 | break; |
c906108c | 6304 | |
3086aeae DJ |
6305 | case bp_watchpoint: |
6306 | case bp_hardware_watchpoint: | |
6307 | case bp_read_watchpoint: | |
6308 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6309 | { |
6310 | struct watchpoint *w = (struct watchpoint *) b; | |
6311 | ||
6312 | /* Field 4, the address, is omitted (which makes the columns | |
6313 | not line up too nicely with the headers, but the effect | |
6314 | is relatively readable). */ | |
6315 | if (opts.addressprint) | |
6316 | ui_out_field_skip (uiout, "addr"); | |
6317 | annotate_field (5); | |
6318 | ui_out_field_string (uiout, "what", w->exp_string); | |
6319 | } | |
3086aeae DJ |
6320 | break; |
6321 | ||
3086aeae DJ |
6322 | case bp_breakpoint: |
6323 | case bp_hardware_breakpoint: | |
6324 | case bp_until: | |
6325 | case bp_finish: | |
6326 | case bp_longjmp: | |
6327 | case bp_longjmp_resume: | |
e2e4d78b | 6328 | case bp_longjmp_call_dummy: |
186c406b TT |
6329 | case bp_exception: |
6330 | case bp_exception_resume: | |
3086aeae | 6331 | case bp_step_resume: |
2c03e5be | 6332 | case bp_hp_step_resume: |
3086aeae DJ |
6333 | case bp_watchpoint_scope: |
6334 | case bp_call_dummy: | |
aa7d318d | 6335 | case bp_std_terminate: |
3086aeae DJ |
6336 | case bp_shlib_event: |
6337 | case bp_thread_event: | |
6338 | case bp_overlay_event: | |
0fd8e87f | 6339 | case bp_longjmp_master: |
aa7d318d | 6340 | case bp_std_terminate_master: |
186c406b | 6341 | case bp_exception_master: |
1042e4c0 | 6342 | case bp_tracepoint: |
7a697b8d | 6343 | case bp_fast_tracepoint: |
0fb4aa4b | 6344 | case bp_static_tracepoint: |
e7e0cddf | 6345 | case bp_dprintf: |
4efc6507 | 6346 | case bp_jit_event: |
0e30163f JK |
6347 | case bp_gnu_ifunc_resolver: |
6348 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6349 | if (opts.addressprint) |
3086aeae DJ |
6350 | { |
6351 | annotate_field (4); | |
54e52265 | 6352 | if (header_of_multiple) |
0d381245 | 6353 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 6354 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 6355 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 6356 | else |
5af949e3 UW |
6357 | ui_out_field_core_addr (uiout, "addr", |
6358 | loc->gdbarch, loc->address); | |
3086aeae DJ |
6359 | } |
6360 | annotate_field (5); | |
0d381245 | 6361 | if (!header_of_multiple) |
170b53b2 | 6362 | print_breakpoint_location (b, loc); |
0d381245 | 6363 | if (b->loc) |
a6d9a66e | 6364 | *last_loc = b->loc; |
3086aeae DJ |
6365 | break; |
6366 | } | |
c906108c | 6367 | |
6c95b8df | 6368 | |
998580f1 | 6369 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6370 | { |
6371 | struct inferior *inf; | |
998580f1 MK |
6372 | VEC(int) *inf_num = NULL; |
6373 | int mi_only = 1; | |
6c95b8df | 6374 | |
998580f1 | 6375 | ALL_INFERIORS (inf) |
6c95b8df PA |
6376 | { |
6377 | if (inf->pspace == loc->pspace) | |
998580f1 | 6378 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6379 | } |
998580f1 MK |
6380 | |
6381 | /* For backward compatibility, don't display inferiors in CLI unless | |
6382 | there are several. Always display for MI. */ | |
6383 | if (allflag | |
6384 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6385 | && (number_of_program_spaces () > 1 | |
6386 | || number_of_inferiors () > 1) | |
6387 | /* LOC is for existing B, it cannot be in | |
6388 | moribund_locations and thus having NULL OWNER. */ | |
6389 | && loc->owner->type != bp_catchpoint)) | |
6390 | mi_only = 0; | |
6391 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6392 | VEC_free (int, inf_num); | |
6c95b8df PA |
6393 | } |
6394 | ||
4a306c9a | 6395 | if (!part_of_multiple) |
c4093a6a | 6396 | { |
4a306c9a JB |
6397 | if (b->thread != -1) |
6398 | { | |
6399 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6400 | "stop only in" line a little further down. */ |
4a306c9a JB |
6401 | ui_out_text (uiout, " thread "); |
6402 | ui_out_field_int (uiout, "thread", b->thread); | |
6403 | } | |
6404 | else if (b->task != 0) | |
6405 | { | |
6406 | ui_out_text (uiout, " task "); | |
6407 | ui_out_field_int (uiout, "task", b->task); | |
6408 | } | |
c4093a6a | 6409 | } |
f1310107 | 6410 | |
8b93c638 | 6411 | ui_out_text (uiout, "\n"); |
f1310107 | 6412 | |
348d480f | 6413 | if (!part_of_multiple) |
f1310107 TJB |
6414 | b->ops->print_one_detail (b, uiout); |
6415 | ||
0d381245 | 6416 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6417 | { |
6418 | annotate_field (6); | |
8b93c638 | 6419 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 6420 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6421 | the frame ID. */ |
5af949e3 UW |
6422 | ui_out_field_core_addr (uiout, "frame", |
6423 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 6424 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6425 | } |
6426 | ||
28010a5d | 6427 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6428 | { |
6429 | annotate_field (7); | |
d77f58be | 6430 | if (is_tracepoint (b)) |
1042e4c0 SS |
6431 | ui_out_text (uiout, "\ttrace only if "); |
6432 | else | |
6433 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6434 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6435 | |
6436 | /* Print whether the target is doing the breakpoint's condition | |
6437 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6438 | if (is_breakpoint (b) | |
6439 | && breakpoint_condition_evaluation_mode () | |
6440 | == condition_evaluation_target) | |
6441 | { | |
6442 | ui_out_text (uiout, " ("); | |
6443 | ui_out_field_string (uiout, "evaluated-by", | |
6444 | bp_condition_evaluator (b)); | |
6445 | ui_out_text (uiout, " evals)"); | |
6446 | } | |
0101ce28 JJ |
6447 | ui_out_text (uiout, "\n"); |
6448 | } | |
6449 | ||
0d381245 | 6450 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6451 | { |
4a64f543 | 6452 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6453 | ui_out_text (uiout, "\tstop only in thread "); |
6454 | ui_out_field_int (uiout, "thread", b->thread); | |
6455 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6456 | } |
6457 | ||
556ec64d YQ |
6458 | if (!part_of_multiple) |
6459 | { | |
6460 | if (b->hit_count) | |
31f56a27 YQ |
6461 | { |
6462 | /* FIXME should make an annotation for this. */ | |
6463 | if (is_catchpoint (b)) | |
6464 | ui_out_text (uiout, "\tcatchpoint"); | |
6465 | else if (is_tracepoint (b)) | |
6466 | ui_out_text (uiout, "\ttracepoint"); | |
6467 | else | |
6468 | ui_out_text (uiout, "\tbreakpoint"); | |
6469 | ui_out_text (uiout, " already hit "); | |
6470 | ui_out_field_int (uiout, "times", b->hit_count); | |
6471 | if (b->hit_count == 1) | |
6472 | ui_out_text (uiout, " time\n"); | |
6473 | else | |
6474 | ui_out_text (uiout, " times\n"); | |
6475 | } | |
556ec64d YQ |
6476 | else |
6477 | { | |
31f56a27 YQ |
6478 | /* Output the count also if it is zero, but only if this is mi. */ |
6479 | if (ui_out_is_mi_like_p (uiout)) | |
6480 | ui_out_field_int (uiout, "times", b->hit_count); | |
556ec64d YQ |
6481 | } |
6482 | } | |
8b93c638 | 6483 | |
0d381245 | 6484 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6485 | { |
6486 | annotate_field (8); | |
8b93c638 JM |
6487 | ui_out_text (uiout, "\tignore next "); |
6488 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6489 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6490 | } |
059fb39f | 6491 | |
816338b5 SS |
6492 | /* Note that an enable count of 1 corresponds to "enable once" |
6493 | behavior, which is reported by the combination of enablement and | |
6494 | disposition, so we don't need to mention it here. */ | |
6495 | if (!part_of_multiple && b->enable_count > 1) | |
6496 | { | |
6497 | annotate_field (8); | |
6498 | ui_out_text (uiout, "\tdisable after "); | |
6499 | /* Tweak the wording to clarify that ignore and enable counts | |
6500 | are distinct, and have additive effect. */ | |
6501 | if (b->ignore_count) | |
6502 | ui_out_text (uiout, "additional "); | |
6503 | else | |
6504 | ui_out_text (uiout, "next "); | |
6505 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6506 | ui_out_text (uiout, " hits\n"); | |
6507 | } | |
6508 | ||
f196051f SS |
6509 | if (!part_of_multiple && is_tracepoint (b)) |
6510 | { | |
6511 | struct tracepoint *tp = (struct tracepoint *) b; | |
6512 | ||
6513 | if (tp->traceframe_usage) | |
6514 | { | |
6515 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6516 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6517 | ui_out_text (uiout, " bytes\n"); | |
6518 | } | |
6519 | } | |
d3ce09f5 | 6520 | |
9add0f1b | 6521 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6522 | if (!part_of_multiple && l) |
c4093a6a | 6523 | { |
3b31d625 EZ |
6524 | struct cleanup *script_chain; |
6525 | ||
c4093a6a | 6526 | annotate_field (9); |
3b31d625 | 6527 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6528 | print_command_lines (uiout, l, 4); |
3b31d625 | 6529 | do_cleanups (script_chain); |
c4093a6a | 6530 | } |
d24317b4 | 6531 | |
d9b3f62e | 6532 | if (is_tracepoint (b)) |
1042e4c0 | 6533 | { |
d9b3f62e PA |
6534 | struct tracepoint *t = (struct tracepoint *) b; |
6535 | ||
6536 | if (!part_of_multiple && t->pass_count) | |
6537 | { | |
6538 | annotate_field (10); | |
6539 | ui_out_text (uiout, "\tpass count "); | |
6540 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6541 | ui_out_text (uiout, " \n"); | |
6542 | } | |
f2a8bc8a YQ |
6543 | |
6544 | /* Don't display it when tracepoint or tracepoint location is | |
6545 | pending. */ | |
6546 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6547 | { | |
6548 | annotate_field (11); | |
6549 | ||
6550 | if (ui_out_is_mi_like_p (uiout)) | |
6551 | ui_out_field_string (uiout, "installed", | |
6552 | loc->inserted ? "y" : "n"); | |
6553 | else | |
6554 | { | |
6555 | if (loc->inserted) | |
6556 | ui_out_text (uiout, "\t"); | |
6557 | else | |
6558 | ui_out_text (uiout, "\tnot "); | |
6559 | ui_out_text (uiout, "installed on target\n"); | |
6560 | } | |
6561 | } | |
1042e4c0 SS |
6562 | } |
6563 | ||
d24317b4 VP |
6564 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6565 | { | |
3a5c3e22 PA |
6566 | if (is_watchpoint (b)) |
6567 | { | |
6568 | struct watchpoint *w = (struct watchpoint *) b; | |
6569 | ||
6570 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6571 | } | |
6572 | else if (b->addr_string) | |
d24317b4 | 6573 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 6574 | } |
c4093a6a | 6575 | } |
c5aa993b | 6576 | |
0d381245 VP |
6577 | static void |
6578 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6579 | struct bp_location **last_loc, |
6c95b8df | 6580 | int allflag) |
0d381245 | 6581 | { |
8d3788bd | 6582 | struct cleanup *bkpt_chain; |
79a45e25 | 6583 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6584 | |
6585 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6586 | ||
12c5a436 | 6587 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6588 | do_cleanups (bkpt_chain); |
0d381245 VP |
6589 | |
6590 | /* If this breakpoint has custom print function, | |
6591 | it's already printed. Otherwise, print individual | |
6592 | locations, if any. */ | |
6593 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6594 | { | |
4a64f543 MS |
6595 | /* If breakpoint has a single location that is disabled, we |
6596 | print it as if it had several locations, since otherwise it's | |
6597 | hard to represent "breakpoint enabled, location disabled" | |
6598 | situation. | |
6599 | ||
6600 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6601 | internally, that's not a property exposed to user. */ |
0d381245 | 6602 | if (b->loc |
a5606eee | 6603 | && !is_hardware_watchpoint (b) |
8d3788bd | 6604 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6605 | { |
6606 | struct bp_location *loc; | |
6607 | int n = 1; | |
8d3788bd | 6608 | |
0d381245 | 6609 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6610 | { |
6611 | struct cleanup *inner2 = | |
6612 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6613 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6614 | do_cleanups (inner2); | |
6615 | } | |
0d381245 VP |
6616 | } |
6617 | } | |
6618 | } | |
6619 | ||
a6d9a66e UW |
6620 | static int |
6621 | breakpoint_address_bits (struct breakpoint *b) | |
6622 | { | |
6623 | int print_address_bits = 0; | |
6624 | struct bp_location *loc; | |
6625 | ||
6626 | for (loc = b->loc; loc; loc = loc->next) | |
6627 | { | |
c7437ca6 PA |
6628 | int addr_bit; |
6629 | ||
6630 | /* Software watchpoints that aren't watching memory don't have | |
6631 | an address to print. */ | |
6632 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6633 | continue; | |
6634 | ||
6635 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6636 | if (addr_bit > print_address_bits) |
6637 | print_address_bits = addr_bit; | |
6638 | } | |
6639 | ||
6640 | return print_address_bits; | |
6641 | } | |
0d381245 | 6642 | |
c4093a6a JM |
6643 | struct captured_breakpoint_query_args |
6644 | { | |
6645 | int bnum; | |
6646 | }; | |
c5aa993b | 6647 | |
c4093a6a | 6648 | static int |
2b65245e | 6649 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6650 | { |
6651 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6652 | struct breakpoint *b; |
a6d9a66e | 6653 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6654 | |
c4093a6a JM |
6655 | ALL_BREAKPOINTS (b) |
6656 | { | |
6657 | if (args->bnum == b->number) | |
c5aa993b | 6658 | { |
12c5a436 | 6659 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6660 | return GDB_RC_OK; |
c5aa993b | 6661 | } |
c4093a6a JM |
6662 | } |
6663 | return GDB_RC_NONE; | |
6664 | } | |
c5aa993b | 6665 | |
c4093a6a | 6666 | enum gdb_rc |
4a64f543 MS |
6667 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6668 | char **error_message) | |
c4093a6a JM |
6669 | { |
6670 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6671 | |
c4093a6a JM |
6672 | args.bnum = bnum; |
6673 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6674 | an error. */ |
b0b13bb4 DJ |
6675 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6676 | error_message, RETURN_MASK_ALL) < 0) | |
6677 | return GDB_RC_FAIL; | |
6678 | else | |
6679 | return GDB_RC_OK; | |
c4093a6a | 6680 | } |
c5aa993b | 6681 | |
09d682a4 TT |
6682 | /* Return true if this breakpoint was set by the user, false if it is |
6683 | internal or momentary. */ | |
6684 | ||
6685 | int | |
6686 | user_breakpoint_p (struct breakpoint *b) | |
6687 | { | |
46c6471b | 6688 | return b->number > 0; |
09d682a4 TT |
6689 | } |
6690 | ||
7f3b0473 | 6691 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6692 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6693 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6694 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6695 | ones for which it returns non-zero. Return the total number of | |
6696 | breakpoints listed. */ | |
c906108c | 6697 | |
d77f58be | 6698 | static int |
e5a67952 | 6699 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6700 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6701 | { |
52f0bd74 | 6702 | struct breakpoint *b; |
a6d9a66e | 6703 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6704 | int nr_printable_breakpoints; |
3b31d625 | 6705 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6706 | struct value_print_options opts; |
a6d9a66e | 6707 | int print_address_bits = 0; |
269b11a2 | 6708 | int print_type_col_width = 14; |
79a45e25 | 6709 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6710 | |
79a45b7d TT |
6711 | get_user_print_options (&opts); |
6712 | ||
4a64f543 MS |
6713 | /* Compute the number of rows in the table, as well as the size |
6714 | required for address fields. */ | |
7f3b0473 AC |
6715 | nr_printable_breakpoints = 0; |
6716 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6717 | { |
6718 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6719 | if (filter && !filter (b)) | |
6720 | continue; | |
6721 | ||
6722 | /* If we have an "args" string, it is a list of breakpoints to | |
6723 | accept. Skip the others. */ | |
6724 | if (args != NULL && *args != '\0') | |
6725 | { | |
6726 | if (allflag && parse_and_eval_long (args) != b->number) | |
6727 | continue; | |
6728 | if (!allflag && !number_is_in_list (args, b->number)) | |
6729 | continue; | |
6730 | } | |
269b11a2 | 6731 | |
e5a67952 MS |
6732 | if (allflag || user_breakpoint_p (b)) |
6733 | { | |
6734 | int addr_bit, type_len; | |
a6d9a66e | 6735 | |
e5a67952 MS |
6736 | addr_bit = breakpoint_address_bits (b); |
6737 | if (addr_bit > print_address_bits) | |
6738 | print_address_bits = addr_bit; | |
269b11a2 | 6739 | |
e5a67952 MS |
6740 | type_len = strlen (bptype_string (b->type)); |
6741 | if (type_len > print_type_col_width) | |
6742 | print_type_col_width = type_len; | |
6743 | ||
6744 | nr_printable_breakpoints++; | |
6745 | } | |
6746 | } | |
7f3b0473 | 6747 | |
79a45b7d | 6748 | if (opts.addressprint) |
3b31d625 | 6749 | bkpttbl_chain |
3e43a32a MS |
6750 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6751 | nr_printable_breakpoints, | |
3b31d625 | 6752 | "BreakpointTable"); |
8b93c638 | 6753 | else |
3b31d625 | 6754 | bkpttbl_chain |
3e43a32a MS |
6755 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6756 | nr_printable_breakpoints, | |
3b31d625 | 6757 | "BreakpointTable"); |
8b93c638 | 6758 | |
7f3b0473 | 6759 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6760 | annotate_breakpoints_headers (); |
6761 | if (nr_printable_breakpoints > 0) | |
6762 | annotate_field (0); | |
4a64f543 | 6763 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6764 | if (nr_printable_breakpoints > 0) |
6765 | annotate_field (1); | |
269b11a2 | 6766 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6767 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6768 | if (nr_printable_breakpoints > 0) |
6769 | annotate_field (2); | |
4a64f543 | 6770 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6771 | if (nr_printable_breakpoints > 0) |
6772 | annotate_field (3); | |
54e52265 | 6773 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6774 | if (opts.addressprint) |
e5a67952 MS |
6775 | { |
6776 | if (nr_printable_breakpoints > 0) | |
6777 | annotate_field (4); | |
6778 | if (print_address_bits <= 32) | |
6779 | ui_out_table_header (uiout, 10, ui_left, | |
6780 | "addr", "Address"); /* 5 */ | |
6781 | else | |
6782 | ui_out_table_header (uiout, 18, ui_left, | |
6783 | "addr", "Address"); /* 5 */ | |
6784 | } | |
d7faa9e7 AC |
6785 | if (nr_printable_breakpoints > 0) |
6786 | annotate_field (5); | |
6787 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6788 | ui_out_table_body (uiout); | |
6789 | if (nr_printable_breakpoints > 0) | |
6790 | annotate_breakpoints_table (); | |
7f3b0473 | 6791 | |
c4093a6a | 6792 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6793 | { |
6794 | QUIT; | |
6795 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6796 | if (filter && !filter (b)) | |
6797 | continue; | |
6798 | ||
6799 | /* If we have an "args" string, it is a list of breakpoints to | |
6800 | accept. Skip the others. */ | |
6801 | ||
6802 | if (args != NULL && *args != '\0') | |
6803 | { | |
6804 | if (allflag) /* maintenance info breakpoint */ | |
6805 | { | |
6806 | if (parse_and_eval_long (args) != b->number) | |
6807 | continue; | |
6808 | } | |
6809 | else /* all others */ | |
6810 | { | |
6811 | if (!number_is_in_list (args, b->number)) | |
6812 | continue; | |
6813 | } | |
6814 | } | |
6815 | /* We only print out user settable breakpoints unless the | |
6816 | allflag is set. */ | |
6817 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6818 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6819 | } |
6820 | ||
3b31d625 | 6821 | do_cleanups (bkpttbl_chain); |
698384cd | 6822 | |
7f3b0473 | 6823 | if (nr_printable_breakpoints == 0) |
c906108c | 6824 | { |
4a64f543 MS |
6825 | /* If there's a filter, let the caller decide how to report |
6826 | empty list. */ | |
d77f58be SS |
6827 | if (!filter) |
6828 | { | |
e5a67952 | 6829 | if (args == NULL || *args == '\0') |
d77f58be SS |
6830 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6831 | else | |
4a64f543 | 6832 | ui_out_message (uiout, 0, |
e5a67952 MS |
6833 | "No breakpoint or watchpoint matching '%s'.\n", |
6834 | args); | |
d77f58be | 6835 | } |
c906108c SS |
6836 | } |
6837 | else | |
c4093a6a | 6838 | { |
a6d9a66e UW |
6839 | if (last_loc && !server_command) |
6840 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6841 | } |
c906108c | 6842 | |
4a64f543 | 6843 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6844 | there have been breakpoints? */ |
c906108c | 6845 | annotate_breakpoints_table_end (); |
d77f58be SS |
6846 | |
6847 | return nr_printable_breakpoints; | |
c906108c SS |
6848 | } |
6849 | ||
ad443146 SS |
6850 | /* Display the value of default-collect in a way that is generally |
6851 | compatible with the breakpoint list. */ | |
6852 | ||
6853 | static void | |
6854 | default_collect_info (void) | |
6855 | { | |
79a45e25 PA |
6856 | struct ui_out *uiout = current_uiout; |
6857 | ||
ad443146 SS |
6858 | /* If it has no value (which is frequently the case), say nothing; a |
6859 | message like "No default-collect." gets in user's face when it's | |
6860 | not wanted. */ | |
6861 | if (!*default_collect) | |
6862 | return; | |
6863 | ||
6864 | /* The following phrase lines up nicely with per-tracepoint collect | |
6865 | actions. */ | |
6866 | ui_out_text (uiout, "default collect "); | |
6867 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6868 | ui_out_text (uiout, " \n"); | |
6869 | } | |
6870 | ||
c906108c | 6871 | static void |
e5a67952 | 6872 | breakpoints_info (char *args, int from_tty) |
c906108c | 6873 | { |
e5a67952 | 6874 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6875 | |
6876 | default_collect_info (); | |
d77f58be SS |
6877 | } |
6878 | ||
6879 | static void | |
e5a67952 | 6880 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6881 | { |
e5a67952 | 6882 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6883 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6884 | |
6885 | if (num_printed == 0) | |
6886 | { | |
e5a67952 | 6887 | if (args == NULL || *args == '\0') |
d77f58be SS |
6888 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6889 | else | |
e5a67952 | 6890 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6891 | } |
c906108c SS |
6892 | } |
6893 | ||
7a292a7a | 6894 | static void |
e5a67952 | 6895 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6896 | { |
e5a67952 | 6897 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6898 | |
6899 | default_collect_info (); | |
c906108c SS |
6900 | } |
6901 | ||
0d381245 | 6902 | static int |
714835d5 | 6903 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6904 | struct program_space *pspace, |
714835d5 | 6905 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6906 | { |
6907 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6908 | |
0d381245 VP |
6909 | for (; bl; bl = bl->next) |
6910 | { | |
6c95b8df PA |
6911 | if (bl->pspace == pspace |
6912 | && bl->address == pc | |
0d381245 VP |
6913 | && (!overlay_debugging || bl->section == section)) |
6914 | return 1; | |
6915 | } | |
6916 | return 0; | |
6917 | } | |
6918 | ||
672f9b60 | 6919 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6920 | concerns with logical breakpoints, so we match program spaces, not |
6921 | address spaces. */ | |
c906108c SS |
6922 | |
6923 | static void | |
6c95b8df PA |
6924 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6925 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6926 | struct obj_section *section, int thread) |
c906108c | 6927 | { |
52f0bd74 AC |
6928 | int others = 0; |
6929 | struct breakpoint *b; | |
c906108c SS |
6930 | |
6931 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6932 | others += (user_breakpoint_p (b) |
6933 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6934 | if (others > 0) |
6935 | { | |
a3f17187 AC |
6936 | if (others == 1) |
6937 | printf_filtered (_("Note: breakpoint ")); | |
6938 | else /* if (others == ???) */ | |
6939 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6940 | ALL_BREAKPOINTS (b) |
672f9b60 | 6941 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6942 | { |
6943 | others--; | |
6944 | printf_filtered ("%d", b->number); | |
6945 | if (b->thread == -1 && thread != -1) | |
6946 | printf_filtered (" (all threads)"); | |
6947 | else if (b->thread != -1) | |
6948 | printf_filtered (" (thread %d)", b->thread); | |
6949 | printf_filtered ("%s%s ", | |
059fb39f | 6950 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6951 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6952 | ? " (disabled)" |
6953 | : b->enable_state == bp_permanent | |
6954 | ? " (permanent)" | |
6955 | : ""), | |
6956 | (others > 1) ? "," | |
6957 | : ((others == 1) ? " and" : "")); | |
6958 | } | |
a3f17187 | 6959 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6960 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6961 | printf_filtered (".\n"); |
6962 | } | |
6963 | } | |
6964 | \f | |
c906108c | 6965 | |
e4f237da KB |
6966 | /* Return true iff it is meaningful to use the address member of |
6967 | BPT. For some breakpoint types, the address member is irrelevant | |
6968 | and it makes no sense to attempt to compare it to other addresses | |
6969 | (or use it for any other purpose either). | |
6970 | ||
4a64f543 MS |
6971 | More specifically, each of the following breakpoint types will |
6972 | always have a zero valued address and we don't want to mark | |
6973 | breakpoints of any of these types to be a duplicate of an actual | |
6974 | breakpoint at address zero: | |
e4f237da KB |
6975 | |
6976 | bp_watchpoint | |
2d134ed3 PA |
6977 | bp_catchpoint |
6978 | ||
6979 | */ | |
e4f237da KB |
6980 | |
6981 | static int | |
6982 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6983 | { | |
6984 | enum bptype type = bpt->type; | |
6985 | ||
2d134ed3 PA |
6986 | return (type != bp_watchpoint && type != bp_catchpoint); |
6987 | } | |
6988 | ||
6989 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6990 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6991 | ||
6992 | static int | |
4a64f543 MS |
6993 | watchpoint_locations_match (struct bp_location *loc1, |
6994 | struct bp_location *loc2) | |
2d134ed3 | 6995 | { |
3a5c3e22 PA |
6996 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6997 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6998 | ||
6999 | /* Both of them must exist. */ | |
7000 | gdb_assert (w1 != NULL); | |
7001 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 7002 | |
4a64f543 MS |
7003 | /* If the target can evaluate the condition expression in hardware, |
7004 | then we we need to insert both watchpoints even if they are at | |
7005 | the same place. Otherwise the watchpoint will only trigger when | |
7006 | the condition of whichever watchpoint was inserted evaluates to | |
7007 | true, not giving a chance for GDB to check the condition of the | |
7008 | other watchpoint. */ | |
3a5c3e22 | 7009 | if ((w1->cond_exp |
4a64f543 MS |
7010 | && target_can_accel_watchpoint_condition (loc1->address, |
7011 | loc1->length, | |
0cf6dd15 | 7012 | loc1->watchpoint_type, |
3a5c3e22 PA |
7013 | w1->cond_exp)) |
7014 | || (w2->cond_exp | |
4a64f543 MS |
7015 | && target_can_accel_watchpoint_condition (loc2->address, |
7016 | loc2->length, | |
0cf6dd15 | 7017 | loc2->watchpoint_type, |
3a5c3e22 | 7018 | w2->cond_exp))) |
0cf6dd15 TJB |
7019 | return 0; |
7020 | ||
85d721b8 PA |
7021 | /* Note that this checks the owner's type, not the location's. In |
7022 | case the target does not support read watchpoints, but does | |
7023 | support access watchpoints, we'll have bp_read_watchpoint | |
7024 | watchpoints with hw_access locations. Those should be considered | |
7025 | duplicates of hw_read locations. The hw_read locations will | |
7026 | become hw_access locations later. */ | |
2d134ed3 PA |
7027 | return (loc1->owner->type == loc2->owner->type |
7028 | && loc1->pspace->aspace == loc2->pspace->aspace | |
7029 | && loc1->address == loc2->address | |
7030 | && loc1->length == loc2->length); | |
e4f237da KB |
7031 | } |
7032 | ||
31e77af2 | 7033 | /* See breakpoint.h. */ |
6c95b8df | 7034 | |
31e77af2 | 7035 | int |
6c95b8df PA |
7036 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, |
7037 | struct address_space *aspace2, CORE_ADDR addr2) | |
7038 | { | |
f5656ead | 7039 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
7040 | || aspace1 == aspace2) |
7041 | && addr1 == addr2); | |
7042 | } | |
7043 | ||
f1310107 TJB |
7044 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
7045 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
7046 | matches ASPACE2. On targets that have global breakpoints, the address | |
7047 | space doesn't really matter. */ | |
7048 | ||
7049 | static int | |
7050 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
7051 | int len1, struct address_space *aspace2, | |
7052 | CORE_ADDR addr2) | |
7053 | { | |
f5656ead | 7054 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
7055 | || aspace1 == aspace2) |
7056 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
7057 | } | |
7058 | ||
7059 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
7060 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
7061 | matches the breakpoint's address space. On targets that have global | |
7062 | breakpoints, the address space doesn't really matter. */ | |
7063 | ||
7064 | static int | |
7065 | breakpoint_location_address_match (struct bp_location *bl, | |
7066 | struct address_space *aspace, | |
7067 | CORE_ADDR addr) | |
7068 | { | |
7069 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
7070 | aspace, addr) | |
7071 | || (bl->length | |
7072 | && breakpoint_address_match_range (bl->pspace->aspace, | |
7073 | bl->address, bl->length, | |
7074 | aspace, addr))); | |
7075 | } | |
7076 | ||
1e4d1764 YQ |
7077 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
7078 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
7079 | true, otherwise returns false. */ | |
7080 | ||
7081 | static int | |
7082 | tracepoint_locations_match (struct bp_location *loc1, | |
7083 | struct bp_location *loc2) | |
7084 | { | |
7085 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
7086 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
7087 | locations at the same address of different tracepoints are regarded as | |
7088 | different locations. */ | |
7089 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
7090 | else | |
7091 | return 0; | |
7092 | } | |
7093 | ||
2d134ed3 PA |
7094 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
7095 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
7096 | represent the same location. */ | |
7097 | ||
7098 | static int | |
4a64f543 MS |
7099 | breakpoint_locations_match (struct bp_location *loc1, |
7100 | struct bp_location *loc2) | |
2d134ed3 | 7101 | { |
2bdf28a0 JK |
7102 | int hw_point1, hw_point2; |
7103 | ||
7104 | /* Both of them must not be in moribund_locations. */ | |
7105 | gdb_assert (loc1->owner != NULL); | |
7106 | gdb_assert (loc2->owner != NULL); | |
7107 | ||
7108 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
7109 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
7110 | |
7111 | if (hw_point1 != hw_point2) | |
7112 | return 0; | |
7113 | else if (hw_point1) | |
7114 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
7115 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
7116 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 7117 | else |
f1310107 TJB |
7118 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
7119 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
7120 | loc2->pspace->aspace, loc2->address) | |
7121 | && loc1->length == loc2->length); | |
2d134ed3 PA |
7122 | } |
7123 | ||
76897487 KB |
7124 | static void |
7125 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
7126 | int bnum, int have_bnum) | |
7127 | { | |
f63fbe86 MS |
7128 | /* The longest string possibly returned by hex_string_custom |
7129 | is 50 chars. These must be at least that big for safety. */ | |
7130 | char astr1[64]; | |
7131 | char astr2[64]; | |
76897487 | 7132 | |
bb599908 PH |
7133 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
7134 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 7135 | if (have_bnum) |
8a3fe4f8 | 7136 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
7137 | bnum, astr1, astr2); |
7138 | else | |
8a3fe4f8 | 7139 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
7140 | } |
7141 | ||
4a64f543 MS |
7142 | /* Adjust a breakpoint's address to account for architectural |
7143 | constraints on breakpoint placement. Return the adjusted address. | |
7144 | Note: Very few targets require this kind of adjustment. For most | |
7145 | targets, this function is simply the identity function. */ | |
76897487 KB |
7146 | |
7147 | static CORE_ADDR | |
a6d9a66e UW |
7148 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
7149 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 7150 | { |
a6d9a66e | 7151 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
7152 | { |
7153 | /* Very few targets need any kind of breakpoint adjustment. */ | |
7154 | return bpaddr; | |
7155 | } | |
88f7da05 KB |
7156 | else if (bptype == bp_watchpoint |
7157 | || bptype == bp_hardware_watchpoint | |
7158 | || bptype == bp_read_watchpoint | |
7159 | || bptype == bp_access_watchpoint | |
fe798b75 | 7160 | || bptype == bp_catchpoint) |
88f7da05 KB |
7161 | { |
7162 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
7163 | have their addresses modified. */ | |
7164 | return bpaddr; | |
7165 | } | |
76897487 KB |
7166 | else |
7167 | { | |
7168 | CORE_ADDR adjusted_bpaddr; | |
7169 | ||
7170 | /* Some targets have architectural constraints on the placement | |
7171 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 7172 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
7173 | |
7174 | /* An adjusted breakpoint address can significantly alter | |
7175 | a user's expectations. Print a warning if an adjustment | |
7176 | is required. */ | |
7177 | if (adjusted_bpaddr != bpaddr) | |
7178 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
7179 | ||
7180 | return adjusted_bpaddr; | |
7181 | } | |
7182 | } | |
7183 | ||
28010a5d PA |
7184 | void |
7185 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
7186 | struct breakpoint *owner) | |
7cc221ef | 7187 | { |
7cc221ef DJ |
7188 | memset (loc, 0, sizeof (*loc)); |
7189 | ||
348d480f PA |
7190 | gdb_assert (ops != NULL); |
7191 | ||
28010a5d PA |
7192 | loc->ops = ops; |
7193 | loc->owner = owner; | |
511a6cd4 | 7194 | loc->cond = NULL; |
b775012e | 7195 | loc->cond_bytecode = NULL; |
0d381245 VP |
7196 | loc->shlib_disabled = 0; |
7197 | loc->enabled = 1; | |
e049a4b5 | 7198 | |
28010a5d | 7199 | switch (owner->type) |
e049a4b5 DJ |
7200 | { |
7201 | case bp_breakpoint: | |
7202 | case bp_until: | |
7203 | case bp_finish: | |
7204 | case bp_longjmp: | |
7205 | case bp_longjmp_resume: | |
e2e4d78b | 7206 | case bp_longjmp_call_dummy: |
186c406b TT |
7207 | case bp_exception: |
7208 | case bp_exception_resume: | |
e049a4b5 | 7209 | case bp_step_resume: |
2c03e5be | 7210 | case bp_hp_step_resume: |
e049a4b5 DJ |
7211 | case bp_watchpoint_scope: |
7212 | case bp_call_dummy: | |
aa7d318d | 7213 | case bp_std_terminate: |
e049a4b5 DJ |
7214 | case bp_shlib_event: |
7215 | case bp_thread_event: | |
7216 | case bp_overlay_event: | |
4efc6507 | 7217 | case bp_jit_event: |
0fd8e87f | 7218 | case bp_longjmp_master: |
aa7d318d | 7219 | case bp_std_terminate_master: |
186c406b | 7220 | case bp_exception_master: |
0e30163f JK |
7221 | case bp_gnu_ifunc_resolver: |
7222 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7223 | case bp_dprintf: |
e049a4b5 | 7224 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7225 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7226 | break; |
7227 | case bp_hardware_breakpoint: | |
7228 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7229 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7230 | break; |
7231 | case bp_hardware_watchpoint: | |
7232 | case bp_read_watchpoint: | |
7233 | case bp_access_watchpoint: | |
7234 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7235 | break; | |
7236 | case bp_watchpoint: | |
ce78b96d | 7237 | case bp_catchpoint: |
15c3d785 PA |
7238 | case bp_tracepoint: |
7239 | case bp_fast_tracepoint: | |
0fb4aa4b | 7240 | case bp_static_tracepoint: |
e049a4b5 DJ |
7241 | loc->loc_type = bp_loc_other; |
7242 | break; | |
7243 | default: | |
e2e0b3e5 | 7244 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7245 | } |
7246 | ||
f431efe5 | 7247 | loc->refc = 1; |
28010a5d PA |
7248 | } |
7249 | ||
7250 | /* Allocate a struct bp_location. */ | |
7251 | ||
7252 | static struct bp_location * | |
7253 | allocate_bp_location (struct breakpoint *bpt) | |
7254 | { | |
348d480f PA |
7255 | return bpt->ops->allocate_location (bpt); |
7256 | } | |
7cc221ef | 7257 | |
f431efe5 PA |
7258 | static void |
7259 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7260 | { |
348d480f | 7261 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
7262 | xfree (loc); |
7263 | } | |
7264 | ||
f431efe5 PA |
7265 | /* Increment reference count. */ |
7266 | ||
7267 | static void | |
7268 | incref_bp_location (struct bp_location *bl) | |
7269 | { | |
7270 | ++bl->refc; | |
7271 | } | |
7272 | ||
7273 | /* Decrement reference count. If the reference count reaches 0, | |
7274 | destroy the bp_location. Sets *BLP to NULL. */ | |
7275 | ||
7276 | static void | |
7277 | decref_bp_location (struct bp_location **blp) | |
7278 | { | |
0807b50c PA |
7279 | gdb_assert ((*blp)->refc > 0); |
7280 | ||
f431efe5 PA |
7281 | if (--(*blp)->refc == 0) |
7282 | free_bp_location (*blp); | |
7283 | *blp = NULL; | |
7284 | } | |
7285 | ||
346774a9 | 7286 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7287 | |
346774a9 PA |
7288 | static void |
7289 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 7290 | { |
346774a9 | 7291 | struct breakpoint *b1; |
c906108c | 7292 | |
346774a9 PA |
7293 | /* Add this breakpoint to the end of the chain so that a list of |
7294 | breakpoints will come out in order of increasing numbers. */ | |
7295 | ||
7296 | b1 = breakpoint_chain; | |
7297 | if (b1 == 0) | |
7298 | breakpoint_chain = b; | |
7299 | else | |
7300 | { | |
7301 | while (b1->next) | |
7302 | b1 = b1->next; | |
7303 | b1->next = b; | |
7304 | } | |
7305 | } | |
7306 | ||
7307 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7308 | ||
7309 | static void | |
7310 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7311 | struct gdbarch *gdbarch, | |
28010a5d | 7312 | enum bptype bptype, |
c0a91b2b | 7313 | const struct breakpoint_ops *ops) |
346774a9 | 7314 | { |
c906108c | 7315 | memset (b, 0, sizeof (*b)); |
2219d63c | 7316 | |
348d480f PA |
7317 | gdb_assert (ops != NULL); |
7318 | ||
28010a5d | 7319 | b->ops = ops; |
4d28f7a8 | 7320 | b->type = bptype; |
a6d9a66e | 7321 | b->gdbarch = gdbarch; |
c906108c SS |
7322 | b->language = current_language->la_language; |
7323 | b->input_radix = input_radix; | |
7324 | b->thread = -1; | |
b5de0fa7 | 7325 | b->enable_state = bp_enabled; |
c906108c SS |
7326 | b->next = 0; |
7327 | b->silent = 0; | |
7328 | b->ignore_count = 0; | |
7329 | b->commands = NULL; | |
818dd999 | 7330 | b->frame_id = null_frame_id; |
0d381245 | 7331 | b->condition_not_parsed = 0; |
84f4c1fe | 7332 | b->py_bp_object = NULL; |
d0fb5eae | 7333 | b->related_breakpoint = b; |
346774a9 PA |
7334 | } |
7335 | ||
7336 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7337 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7338 | |
7339 | static struct breakpoint * | |
7340 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7341 | enum bptype bptype, |
c0a91b2b | 7342 | const struct breakpoint_ops *ops) |
346774a9 PA |
7343 | { |
7344 | struct breakpoint *b = XNEW (struct breakpoint); | |
7345 | ||
348d480f | 7346 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 7347 | add_to_breakpoint_chain (b); |
0d381245 VP |
7348 | return b; |
7349 | } | |
7350 | ||
0e30163f JK |
7351 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7352 | resolutions should be made as the user specified the location explicitly | |
7353 | enough. */ | |
7354 | ||
0d381245 | 7355 | static void |
0e30163f | 7356 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7357 | { |
2bdf28a0 JK |
7358 | gdb_assert (loc->owner != NULL); |
7359 | ||
0d381245 | 7360 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7361 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7362 | || is_tracepoint (loc->owner)) |
0d381245 | 7363 | { |
0e30163f | 7364 | int is_gnu_ifunc; |
2c02bd72 | 7365 | const char *function_name; |
6a3a010b | 7366 | CORE_ADDR func_addr; |
0e30163f | 7367 | |
2c02bd72 | 7368 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7369 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7370 | |
7371 | if (is_gnu_ifunc && !explicit_loc) | |
7372 | { | |
7373 | struct breakpoint *b = loc->owner; | |
7374 | ||
7375 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7376 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7377 | &loc->requested_address)) |
7378 | { | |
7379 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7380 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7381 | loc->requested_address, | |
7382 | b->type); | |
7383 | } | |
7384 | else if (b->type == bp_breakpoint && b->loc == loc | |
7385 | && loc->next == NULL && b->related_breakpoint == b) | |
7386 | { | |
7387 | /* Create only the whole new breakpoint of this type but do not | |
7388 | mess more complicated breakpoints with multiple locations. */ | |
7389 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7390 | /* Remember the resolver's address for use by the return |
7391 | breakpoint. */ | |
7392 | loc->related_address = func_addr; | |
0e30163f JK |
7393 | } |
7394 | } | |
7395 | ||
2c02bd72 DE |
7396 | if (function_name) |
7397 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7398 | } |
7399 | } | |
7400 | ||
a6d9a66e | 7401 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7402 | struct gdbarch * |
a6d9a66e UW |
7403 | get_sal_arch (struct symtab_and_line sal) |
7404 | { | |
7405 | if (sal.section) | |
7406 | return get_objfile_arch (sal.section->objfile); | |
7407 | if (sal.symtab) | |
7408 | return get_objfile_arch (sal.symtab->objfile); | |
7409 | ||
7410 | return NULL; | |
7411 | } | |
7412 | ||
346774a9 PA |
7413 | /* Low level routine for partially initializing a breakpoint of type |
7414 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7415 | file name, and line number are provided by SAL. |
0d381245 VP |
7416 | |
7417 | It is expected that the caller will complete the initialization of | |
7418 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7419 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7420 | |
346774a9 PA |
7421 | static void |
7422 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7423 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7424 | const struct breakpoint_ops *ops) |
0d381245 | 7425 | { |
28010a5d | 7426 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7427 | |
3742cc8b | 7428 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7429 | |
6c95b8df PA |
7430 | if (bptype != bp_catchpoint) |
7431 | gdb_assert (sal.pspace != NULL); | |
7432 | ||
f8eba3c6 TT |
7433 | /* Store the program space that was used to set the breakpoint, |
7434 | except for ordinary breakpoints, which are independent of the | |
7435 | program space. */ | |
7436 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7437 | b->pspace = sal.pspace; | |
346774a9 | 7438 | } |
c906108c | 7439 | |
346774a9 PA |
7440 | /* set_raw_breakpoint is a low level routine for allocating and |
7441 | partially initializing a breakpoint of type BPTYPE. The newly | |
7442 | created breakpoint's address, section, source file name, and line | |
7443 | number are provided by SAL. The newly created and partially | |
7444 | initialized breakpoint is added to the breakpoint chain and | |
7445 | is also returned as the value of this function. | |
7446 | ||
7447 | It is expected that the caller will complete the initialization of | |
7448 | the newly created breakpoint struct as well as output any status | |
7449 | information regarding the creation of a new breakpoint. In | |
7450 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7451 | number! Care should be taken to not allow an error to occur | |
7452 | prior to completing the initialization of the breakpoint. If this | |
7453 | should happen, a bogus breakpoint will be left on the chain. */ | |
7454 | ||
7455 | struct breakpoint * | |
7456 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7457 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7458 | const struct breakpoint_ops *ops) |
346774a9 PA |
7459 | { |
7460 | struct breakpoint *b = XNEW (struct breakpoint); | |
7461 | ||
348d480f | 7462 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7463 | add_to_breakpoint_chain (b); |
c906108c SS |
7464 | return b; |
7465 | } | |
7466 | ||
c2c6d25f JM |
7467 | |
7468 | /* Note that the breakpoint object B describes a permanent breakpoint | |
7469 | instruction, hard-wired into the inferior's code. */ | |
7470 | void | |
7471 | make_breakpoint_permanent (struct breakpoint *b) | |
7472 | { | |
0d381245 | 7473 | struct bp_location *bl; |
cc59ec59 | 7474 | |
b5de0fa7 | 7475 | b->enable_state = bp_permanent; |
c2c6d25f | 7476 | |
4a64f543 MS |
7477 | /* By definition, permanent breakpoints are already present in the |
7478 | code. Mark all locations as inserted. For now, | |
7479 | make_breakpoint_permanent is called in just one place, so it's | |
7480 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 7481 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
7482 | for (bl = b->loc; bl; bl = bl->next) |
7483 | bl->inserted = 1; | |
c2c6d25f JM |
7484 | } |
7485 | ||
53a5351d | 7486 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7487 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7488 | initiated the operation. */ | |
c906108c SS |
7489 | |
7490 | void | |
186c406b | 7491 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7492 | { |
35df4500 | 7493 | struct breakpoint *b, *b_tmp; |
186c406b | 7494 | int thread = tp->num; |
0fd8e87f UW |
7495 | |
7496 | /* To avoid having to rescan all objfile symbols at every step, | |
7497 | we maintain a list of continually-inserted but always disabled | |
7498 | longjmp "master" breakpoints. Here, we simply create momentary | |
7499 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7500 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7501 | if (b->pspace == current_program_space |
186c406b TT |
7502 | && (b->type == bp_longjmp_master |
7503 | || b->type == bp_exception_master)) | |
0fd8e87f | 7504 | { |
06edf0c0 PA |
7505 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7506 | struct breakpoint *clone; | |
cc59ec59 | 7507 | |
e2e4d78b JK |
7508 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7509 | after their removal. */ | |
06edf0c0 | 7510 | clone = momentary_breakpoint_from_master (b, type, |
a1aa2221 | 7511 | &longjmp_breakpoint_ops, 1); |
0fd8e87f UW |
7512 | clone->thread = thread; |
7513 | } | |
186c406b TT |
7514 | |
7515 | tp->initiating_frame = frame; | |
c906108c SS |
7516 | } |
7517 | ||
611c83ae | 7518 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7519 | void |
611c83ae | 7520 | delete_longjmp_breakpoint (int thread) |
c906108c | 7521 | { |
35df4500 | 7522 | struct breakpoint *b, *b_tmp; |
c906108c | 7523 | |
35df4500 | 7524 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7525 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7526 | { |
7527 | if (b->thread == thread) | |
7528 | delete_breakpoint (b); | |
7529 | } | |
c906108c SS |
7530 | } |
7531 | ||
f59f708a PA |
7532 | void |
7533 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7534 | { | |
7535 | struct breakpoint *b, *b_tmp; | |
7536 | ||
7537 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7538 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7539 | { | |
7540 | if (b->thread == thread) | |
7541 | b->disposition = disp_del_at_next_stop; | |
7542 | } | |
7543 | } | |
7544 | ||
e2e4d78b JK |
7545 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7546 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7547 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7548 | breakpoints. */ | |
7549 | ||
7550 | struct breakpoint * | |
7551 | set_longjmp_breakpoint_for_call_dummy (void) | |
7552 | { | |
7553 | struct breakpoint *b, *retval = NULL; | |
7554 | ||
7555 | ALL_BREAKPOINTS (b) | |
7556 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7557 | { | |
7558 | struct breakpoint *new_b; | |
7559 | ||
7560 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
a1aa2221 LM |
7561 | &momentary_breakpoint_ops, |
7562 | 1); | |
e2e4d78b JK |
7563 | new_b->thread = pid_to_thread_id (inferior_ptid); |
7564 | ||
7565 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7566 | ||
7567 | gdb_assert (new_b->related_breakpoint == new_b); | |
7568 | if (retval == NULL) | |
7569 | retval = new_b; | |
7570 | new_b->related_breakpoint = retval; | |
7571 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7572 | retval = retval->related_breakpoint; | |
7573 | retval->related_breakpoint = new_b; | |
7574 | } | |
7575 | ||
7576 | return retval; | |
7577 | } | |
7578 | ||
7579 | /* Verify all existing dummy frames and their associated breakpoints for | |
b67a2c6f | 7580 | TP. Remove those which can no longer be found in the current frame |
e2e4d78b JK |
7581 | stack. |
7582 | ||
7583 | You should call this function only at places where it is safe to currently | |
7584 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7585 | frames. */ | |
7586 | ||
7587 | void | |
b67a2c6f | 7588 | check_longjmp_breakpoint_for_call_dummy (struct thread_info *tp) |
e2e4d78b JK |
7589 | { |
7590 | struct breakpoint *b, *b_tmp; | |
7591 | ||
7592 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
b67a2c6f | 7593 | if (b->type == bp_longjmp_call_dummy && b->thread == tp->num) |
e2e4d78b JK |
7594 | { |
7595 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7596 | ||
7597 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7598 | dummy_b = dummy_b->related_breakpoint; | |
7599 | if (dummy_b->type != bp_call_dummy | |
7600 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7601 | continue; | |
7602 | ||
b67a2c6f | 7603 | dummy_frame_discard (dummy_b->frame_id, tp->ptid); |
e2e4d78b JK |
7604 | |
7605 | while (b->related_breakpoint != b) | |
7606 | { | |
7607 | if (b_tmp == b->related_breakpoint) | |
7608 | b_tmp = b->related_breakpoint->next; | |
7609 | delete_breakpoint (b->related_breakpoint); | |
7610 | } | |
7611 | delete_breakpoint (b); | |
7612 | } | |
7613 | } | |
7614 | ||
1900040c MS |
7615 | void |
7616 | enable_overlay_breakpoints (void) | |
7617 | { | |
52f0bd74 | 7618 | struct breakpoint *b; |
1900040c MS |
7619 | |
7620 | ALL_BREAKPOINTS (b) | |
7621 | if (b->type == bp_overlay_event) | |
7622 | { | |
7623 | b->enable_state = bp_enabled; | |
44702360 | 7624 | update_global_location_list (UGLL_MAY_INSERT); |
c02f5703 | 7625 | overlay_events_enabled = 1; |
1900040c MS |
7626 | } |
7627 | } | |
7628 | ||
7629 | void | |
7630 | disable_overlay_breakpoints (void) | |
7631 | { | |
52f0bd74 | 7632 | struct breakpoint *b; |
1900040c MS |
7633 | |
7634 | ALL_BREAKPOINTS (b) | |
7635 | if (b->type == bp_overlay_event) | |
7636 | { | |
7637 | b->enable_state = bp_disabled; | |
44702360 | 7638 | update_global_location_list (UGLL_DONT_INSERT); |
c02f5703 | 7639 | overlay_events_enabled = 0; |
1900040c MS |
7640 | } |
7641 | } | |
7642 | ||
aa7d318d TT |
7643 | /* Set an active std::terminate breakpoint for each std::terminate |
7644 | master breakpoint. */ | |
7645 | void | |
7646 | set_std_terminate_breakpoint (void) | |
7647 | { | |
35df4500 | 7648 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7649 | |
35df4500 | 7650 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7651 | if (b->pspace == current_program_space |
7652 | && b->type == bp_std_terminate_master) | |
7653 | { | |
06edf0c0 | 7654 | momentary_breakpoint_from_master (b, bp_std_terminate, |
a1aa2221 | 7655 | &momentary_breakpoint_ops, 1); |
aa7d318d TT |
7656 | } |
7657 | } | |
7658 | ||
7659 | /* Delete all the std::terminate breakpoints. */ | |
7660 | void | |
7661 | delete_std_terminate_breakpoint (void) | |
7662 | { | |
35df4500 | 7663 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7664 | |
35df4500 | 7665 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7666 | if (b->type == bp_std_terminate) |
7667 | delete_breakpoint (b); | |
7668 | } | |
7669 | ||
c4093a6a | 7670 | struct breakpoint * |
a6d9a66e | 7671 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7672 | { |
7673 | struct breakpoint *b; | |
c4093a6a | 7674 | |
06edf0c0 PA |
7675 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7676 | &internal_breakpoint_ops); | |
7677 | ||
b5de0fa7 | 7678 | b->enable_state = bp_enabled; |
c4093a6a | 7679 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
7680 | b->addr_string |
7681 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 7682 | |
44702360 | 7683 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 7684 | |
c4093a6a JM |
7685 | return b; |
7686 | } | |
7687 | ||
7688 | void | |
7689 | remove_thread_event_breakpoints (void) | |
7690 | { | |
35df4500 | 7691 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7692 | |
35df4500 | 7693 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7694 | if (b->type == bp_thread_event |
7695 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7696 | delete_breakpoint (b); |
7697 | } | |
7698 | ||
0101ce28 JJ |
7699 | struct lang_and_radix |
7700 | { | |
7701 | enum language lang; | |
7702 | int radix; | |
7703 | }; | |
7704 | ||
4efc6507 DE |
7705 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7706 | ||
7707 | struct breakpoint * | |
7708 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7709 | { | |
7710 | struct breakpoint *b; | |
7711 | ||
06edf0c0 PA |
7712 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7713 | &internal_breakpoint_ops); | |
44702360 | 7714 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
4efc6507 DE |
7715 | return b; |
7716 | } | |
0101ce28 | 7717 | |
03673fc7 PP |
7718 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7719 | ||
7720 | void | |
7721 | remove_jit_event_breakpoints (void) | |
7722 | { | |
7723 | struct breakpoint *b, *b_tmp; | |
7724 | ||
7725 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7726 | if (b->type == bp_jit_event | |
7727 | && b->loc->pspace == current_program_space) | |
7728 | delete_breakpoint (b); | |
7729 | } | |
7730 | ||
cae688ec JJ |
7731 | void |
7732 | remove_solib_event_breakpoints (void) | |
7733 | { | |
35df4500 | 7734 | struct breakpoint *b, *b_tmp; |
cae688ec | 7735 | |
35df4500 | 7736 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7737 | if (b->type == bp_shlib_event |
7738 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7739 | delete_breakpoint (b); |
7740 | } | |
7741 | ||
f37f681c PA |
7742 | /* See breakpoint.h. */ |
7743 | ||
7744 | void | |
7745 | remove_solib_event_breakpoints_at_next_stop (void) | |
7746 | { | |
7747 | struct breakpoint *b, *b_tmp; | |
7748 | ||
7749 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7750 | if (b->type == bp_shlib_event | |
7751 | && b->loc->pspace == current_program_space) | |
7752 | b->disposition = disp_del_at_next_stop; | |
7753 | } | |
7754 | ||
04086b45 PA |
7755 | /* Helper for create_solib_event_breakpoint / |
7756 | create_and_insert_solib_event_breakpoint. Allows specifying which | |
7757 | INSERT_MODE to pass through to update_global_location_list. */ | |
7758 | ||
7759 | static struct breakpoint * | |
7760 | create_solib_event_breakpoint_1 (struct gdbarch *gdbarch, CORE_ADDR address, | |
7761 | enum ugll_insert_mode insert_mode) | |
cae688ec JJ |
7762 | { |
7763 | struct breakpoint *b; | |
7764 | ||
06edf0c0 PA |
7765 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7766 | &internal_breakpoint_ops); | |
04086b45 | 7767 | update_global_location_list_nothrow (insert_mode); |
cae688ec JJ |
7768 | return b; |
7769 | } | |
7770 | ||
04086b45 PA |
7771 | struct breakpoint * |
7772 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7773 | { | |
7774 | return create_solib_event_breakpoint_1 (gdbarch, address, UGLL_MAY_INSERT); | |
7775 | } | |
7776 | ||
f37f681c PA |
7777 | /* See breakpoint.h. */ |
7778 | ||
7779 | struct breakpoint * | |
7780 | create_and_insert_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7781 | { | |
7782 | struct breakpoint *b; | |
7783 | ||
04086b45 PA |
7784 | /* Explicitly tell update_global_location_list to insert |
7785 | locations. */ | |
7786 | b = create_solib_event_breakpoint_1 (gdbarch, address, UGLL_INSERT); | |
f37f681c PA |
7787 | if (!b->loc->inserted) |
7788 | { | |
7789 | delete_breakpoint (b); | |
7790 | return NULL; | |
7791 | } | |
7792 | return b; | |
7793 | } | |
7794 | ||
cae688ec JJ |
7795 | /* Disable any breakpoints that are on code in shared libraries. Only |
7796 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7797 | ||
7798 | void | |
cb851954 | 7799 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7800 | { |
876fa593 | 7801 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7802 | |
876fa593 | 7803 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7804 | { |
2bdf28a0 | 7805 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7806 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7807 | |
4a64f543 MS |
7808 | /* We apply the check to all breakpoints, including disabled for |
7809 | those with loc->duplicate set. This is so that when breakpoint | |
7810 | becomes enabled, or the duplicate is removed, gdb will try to | |
7811 | insert all breakpoints. If we don't set shlib_disabled here, | |
7812 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7813 | if (((b->type == bp_breakpoint) |
508ccb1f | 7814 | || (b->type == bp_jit_event) |
1042e4c0 | 7815 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7816 | || (is_tracepoint (b))) |
6c95b8df | 7817 | && loc->pspace == current_program_space |
0d381245 | 7818 | && !loc->shlib_disabled |
6c95b8df | 7819 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7820 | ) |
0d381245 VP |
7821 | { |
7822 | loc->shlib_disabled = 1; | |
7823 | } | |
cae688ec JJ |
7824 | } |
7825 | } | |
7826 | ||
63644780 NB |
7827 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7828 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7829 | disabled ones can just stay disabled. */ | |
84acb35a | 7830 | |
75149521 | 7831 | static void |
84acb35a JJ |
7832 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7833 | { | |
876fa593 | 7834 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7835 | int disabled_shlib_breaks = 0; |
7836 | ||
c86cf029 VP |
7837 | /* SunOS a.out shared libraries are always mapped, so do not |
7838 | disable breakpoints; they will only be reported as unloaded | |
7839 | through clear_solib when GDB discards its shared library | |
7840 | list. See clear_solib for more information. */ | |
7841 | if (exec_bfd != NULL | |
7842 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7843 | return; | |
7844 | ||
876fa593 | 7845 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7846 | { |
2bdf28a0 | 7847 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7848 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7849 | |
1e4d1764 | 7850 | if (solib->pspace == loc->pspace |
e2dd7057 | 7851 | && !loc->shlib_disabled |
1e4d1764 YQ |
7852 | && (((b->type == bp_breakpoint |
7853 | || b->type == bp_jit_event | |
7854 | || b->type == bp_hardware_breakpoint) | |
7855 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7856 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7857 | || is_tracepoint (b)) | |
e2dd7057 | 7858 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7859 | { |
e2dd7057 PP |
7860 | loc->shlib_disabled = 1; |
7861 | /* At this point, we cannot rely on remove_breakpoint | |
7862 | succeeding so we must mark the breakpoint as not inserted | |
7863 | to prevent future errors occurring in remove_breakpoints. */ | |
7864 | loc->inserted = 0; | |
8d3788bd VP |
7865 | |
7866 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7867 | observer_notify_breakpoint_modified (b); | |
7868 | ||
e2dd7057 PP |
7869 | if (!disabled_shlib_breaks) |
7870 | { | |
7871 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7872 | warning (_("Temporarily disabling breakpoints " |
7873 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7874 | solib->so_name); |
84acb35a | 7875 | } |
e2dd7057 | 7876 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7877 | } |
7878 | } | |
84acb35a JJ |
7879 | } |
7880 | ||
63644780 NB |
7881 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7882 | notification of free_objfile. Only apply to enabled breakpoints, | |
7883 | disabled ones can just stay disabled. */ | |
7884 | ||
7885 | static void | |
7886 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7887 | { | |
7888 | struct breakpoint *b; | |
7889 | ||
7890 | if (objfile == NULL) | |
7891 | return; | |
7892 | ||
d03de421 PA |
7893 | /* OBJF_SHARED|OBJF_USERLOADED objfiles are dynamic modules manually |
7894 | managed by the user with add-symbol-file/remove-symbol-file. | |
7895 | Similarly to how breakpoints in shared libraries are handled in | |
7896 | response to "nosharedlibrary", mark breakpoints in such modules | |
08351840 PA |
7897 | shlib_disabled so they end up uninserted on the next global |
7898 | location list update. Shared libraries not loaded by the user | |
7899 | aren't handled here -- they're already handled in | |
7900 | disable_breakpoints_in_unloaded_shlib, called by solib.c's | |
7901 | solib_unloaded observer. We skip objfiles that are not | |
d03de421 PA |
7902 | OBJF_SHARED as those aren't considered dynamic objects (e.g. the |
7903 | main objfile). */ | |
7904 | if ((objfile->flags & OBJF_SHARED) == 0 | |
7905 | || (objfile->flags & OBJF_USERLOADED) == 0) | |
63644780 NB |
7906 | return; |
7907 | ||
7908 | ALL_BREAKPOINTS (b) | |
7909 | { | |
7910 | struct bp_location *loc; | |
7911 | int bp_modified = 0; | |
7912 | ||
7913 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7914 | continue; | |
7915 | ||
7916 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7917 | { | |
7918 | CORE_ADDR loc_addr = loc->address; | |
7919 | ||
7920 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7921 | && loc->loc_type != bp_loc_software_breakpoint) | |
7922 | continue; | |
7923 | ||
7924 | if (loc->shlib_disabled != 0) | |
7925 | continue; | |
7926 | ||
7927 | if (objfile->pspace != loc->pspace) | |
7928 | continue; | |
7929 | ||
7930 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7931 | && loc->loc_type != bp_loc_software_breakpoint) | |
7932 | continue; | |
7933 | ||
7934 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7935 | { | |
7936 | loc->shlib_disabled = 1; | |
08351840 PA |
7937 | /* At this point, we don't know whether the object was |
7938 | unmapped from the inferior or not, so leave the | |
7939 | inserted flag alone. We'll handle failure to | |
7940 | uninsert quietly, in case the object was indeed | |
7941 | unmapped. */ | |
63644780 NB |
7942 | |
7943 | mark_breakpoint_location_modified (loc); | |
7944 | ||
7945 | bp_modified = 1; | |
7946 | } | |
7947 | } | |
7948 | ||
7949 | if (bp_modified) | |
7950 | observer_notify_breakpoint_modified (b); | |
7951 | } | |
7952 | } | |
7953 | ||
ce78b96d JB |
7954 | /* FORK & VFORK catchpoints. */ |
7955 | ||
e29a4733 PA |
7956 | /* An instance of this type is used to represent a fork or vfork |
7957 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7958 | class; users downcast to "struct breakpoint *" when needed. A | |
7959 | breakpoint is really of this type iff its ops pointer points to | |
7960 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7961 | ||
7962 | struct fork_catchpoint | |
7963 | { | |
7964 | /* The base class. */ | |
7965 | struct breakpoint base; | |
7966 | ||
7967 | /* Process id of a child process whose forking triggered this | |
7968 | catchpoint. This field is only valid immediately after this | |
7969 | catchpoint has triggered. */ | |
7970 | ptid_t forked_inferior_pid; | |
7971 | }; | |
7972 | ||
4a64f543 MS |
7973 | /* Implement the "insert" breakpoint_ops method for fork |
7974 | catchpoints. */ | |
ce78b96d | 7975 | |
77b06cd7 TJB |
7976 | static int |
7977 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7978 | { |
dfd4cc63 | 7979 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7980 | } |
7981 | ||
4a64f543 MS |
7982 | /* Implement the "remove" breakpoint_ops method for fork |
7983 | catchpoints. */ | |
ce78b96d JB |
7984 | |
7985 | static int | |
77b06cd7 | 7986 | remove_catch_fork (struct bp_location *bl) |
ce78b96d | 7987 | { |
dfd4cc63 | 7988 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7989 | } |
7990 | ||
7991 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7992 | catchpoints. */ | |
7993 | ||
7994 | static int | |
f1310107 | 7995 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7996 | struct address_space *aspace, CORE_ADDR bp_addr, |
7997 | const struct target_waitstatus *ws) | |
ce78b96d | 7998 | { |
e29a4733 PA |
7999 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
8000 | ||
f90263c1 TT |
8001 | if (ws->kind != TARGET_WAITKIND_FORKED) |
8002 | return 0; | |
8003 | ||
8004 | c->forked_inferior_pid = ws->value.related_pid; | |
8005 | return 1; | |
ce78b96d JB |
8006 | } |
8007 | ||
4a64f543 MS |
8008 | /* Implement the "print_it" breakpoint_ops method for fork |
8009 | catchpoints. */ | |
ce78b96d JB |
8010 | |
8011 | static enum print_stop_action | |
348d480f | 8012 | print_it_catch_fork (bpstat bs) |
ce78b96d | 8013 | { |
36dfb11c | 8014 | struct ui_out *uiout = current_uiout; |
348d480f PA |
8015 | struct breakpoint *b = bs->breakpoint_at; |
8016 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 8017 | |
ce78b96d | 8018 | annotate_catchpoint (b->number); |
36dfb11c TT |
8019 | if (b->disposition == disp_del) |
8020 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8021 | else | |
8022 | ui_out_text (uiout, "\nCatchpoint "); | |
8023 | if (ui_out_is_mi_like_p (uiout)) | |
8024 | { | |
8025 | ui_out_field_string (uiout, "reason", | |
8026 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
8027 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8028 | } | |
8029 | ui_out_field_int (uiout, "bkptno", b->number); | |
8030 | ui_out_text (uiout, " (forked process "); | |
8031 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8032 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
8033 | return PRINT_SRC_AND_LOC; |
8034 | } | |
8035 | ||
4a64f543 MS |
8036 | /* Implement the "print_one" breakpoint_ops method for fork |
8037 | catchpoints. */ | |
ce78b96d JB |
8038 | |
8039 | static void | |
a6d9a66e | 8040 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8041 | { |
e29a4733 | 8042 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8043 | struct value_print_options opts; |
79a45e25 | 8044 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8045 | |
8046 | get_user_print_options (&opts); | |
8047 | ||
4a64f543 MS |
8048 | /* Field 4, the address, is omitted (which makes the columns not |
8049 | line up too nicely with the headers, but the effect is relatively | |
8050 | readable). */ | |
79a45b7d | 8051 | if (opts.addressprint) |
ce78b96d JB |
8052 | ui_out_field_skip (uiout, "addr"); |
8053 | annotate_field (5); | |
8054 | ui_out_text (uiout, "fork"); | |
e29a4733 | 8055 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
8056 | { |
8057 | ui_out_text (uiout, ", process "); | |
8058 | ui_out_field_int (uiout, "what", | |
e29a4733 | 8059 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
8060 | ui_out_spaces (uiout, 1); |
8061 | } | |
8ac3646f TT |
8062 | |
8063 | if (ui_out_is_mi_like_p (uiout)) | |
8064 | ui_out_field_string (uiout, "catch-type", "fork"); | |
ce78b96d JB |
8065 | } |
8066 | ||
8067 | /* Implement the "print_mention" breakpoint_ops method for fork | |
8068 | catchpoints. */ | |
8069 | ||
8070 | static void | |
8071 | print_mention_catch_fork (struct breakpoint *b) | |
8072 | { | |
8073 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
8074 | } | |
8075 | ||
6149aea9 PA |
8076 | /* Implement the "print_recreate" breakpoint_ops method for fork |
8077 | catchpoints. */ | |
8078 | ||
8079 | static void | |
8080 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
8081 | { | |
8082 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 8083 | print_recreate_thread (b, fp); |
6149aea9 PA |
8084 | } |
8085 | ||
ce78b96d JB |
8086 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
8087 | ||
2060206e | 8088 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 8089 | |
4a64f543 MS |
8090 | /* Implement the "insert" breakpoint_ops method for vfork |
8091 | catchpoints. */ | |
ce78b96d | 8092 | |
77b06cd7 TJB |
8093 | static int |
8094 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 8095 | { |
dfd4cc63 | 8096 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8097 | } |
8098 | ||
4a64f543 MS |
8099 | /* Implement the "remove" breakpoint_ops method for vfork |
8100 | catchpoints. */ | |
ce78b96d JB |
8101 | |
8102 | static int | |
77b06cd7 | 8103 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d | 8104 | { |
dfd4cc63 | 8105 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
8106 | } |
8107 | ||
8108 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
8109 | catchpoints. */ | |
8110 | ||
8111 | static int | |
f1310107 | 8112 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
8113 | struct address_space *aspace, CORE_ADDR bp_addr, |
8114 | const struct target_waitstatus *ws) | |
ce78b96d | 8115 | { |
e29a4733 PA |
8116 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
8117 | ||
f90263c1 TT |
8118 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
8119 | return 0; | |
8120 | ||
8121 | c->forked_inferior_pid = ws->value.related_pid; | |
8122 | return 1; | |
ce78b96d JB |
8123 | } |
8124 | ||
4a64f543 MS |
8125 | /* Implement the "print_it" breakpoint_ops method for vfork |
8126 | catchpoints. */ | |
ce78b96d JB |
8127 | |
8128 | static enum print_stop_action | |
348d480f | 8129 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 8130 | { |
36dfb11c | 8131 | struct ui_out *uiout = current_uiout; |
348d480f | 8132 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
8133 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
8134 | ||
ce78b96d | 8135 | annotate_catchpoint (b->number); |
36dfb11c TT |
8136 | if (b->disposition == disp_del) |
8137 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8138 | else | |
8139 | ui_out_text (uiout, "\nCatchpoint "); | |
8140 | if (ui_out_is_mi_like_p (uiout)) | |
8141 | { | |
8142 | ui_out_field_string (uiout, "reason", | |
8143 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
8144 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8145 | } | |
8146 | ui_out_field_int (uiout, "bkptno", b->number); | |
8147 | ui_out_text (uiout, " (vforked process "); | |
8148 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
8149 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
8150 | return PRINT_SRC_AND_LOC; |
8151 | } | |
8152 | ||
4a64f543 MS |
8153 | /* Implement the "print_one" breakpoint_ops method for vfork |
8154 | catchpoints. */ | |
ce78b96d JB |
8155 | |
8156 | static void | |
a6d9a66e | 8157 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 8158 | { |
e29a4733 | 8159 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 8160 | struct value_print_options opts; |
79a45e25 | 8161 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
8162 | |
8163 | get_user_print_options (&opts); | |
4a64f543 MS |
8164 | /* Field 4, the address, is omitted (which makes the columns not |
8165 | line up too nicely with the headers, but the effect is relatively | |
8166 | readable). */ | |
79a45b7d | 8167 | if (opts.addressprint) |
ce78b96d JB |
8168 | ui_out_field_skip (uiout, "addr"); |
8169 | annotate_field (5); | |
8170 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 8171 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
8172 | { |
8173 | ui_out_text (uiout, ", process "); | |
8174 | ui_out_field_int (uiout, "what", | |
e29a4733 | 8175 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
8176 | ui_out_spaces (uiout, 1); |
8177 | } | |
8ac3646f TT |
8178 | |
8179 | if (ui_out_is_mi_like_p (uiout)) | |
8180 | ui_out_field_string (uiout, "catch-type", "vfork"); | |
ce78b96d JB |
8181 | } |
8182 | ||
8183 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
8184 | catchpoints. */ | |
8185 | ||
8186 | static void | |
8187 | print_mention_catch_vfork (struct breakpoint *b) | |
8188 | { | |
8189 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
8190 | } | |
8191 | ||
6149aea9 PA |
8192 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
8193 | catchpoints. */ | |
8194 | ||
8195 | static void | |
8196 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
8197 | { | |
8198 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 8199 | print_recreate_thread (b, fp); |
6149aea9 PA |
8200 | } |
8201 | ||
ce78b96d JB |
8202 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
8203 | ||
2060206e | 8204 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 8205 | |
edcc5120 TT |
8206 | /* An instance of this type is used to represent an solib catchpoint. |
8207 | It includes a "struct breakpoint" as a kind of base class; users | |
8208 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8209 | really of this type iff its ops pointer points to | |
8210 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
8211 | ||
8212 | struct solib_catchpoint | |
8213 | { | |
8214 | /* The base class. */ | |
8215 | struct breakpoint base; | |
8216 | ||
8217 | /* True for "catch load", false for "catch unload". */ | |
8218 | unsigned char is_load; | |
8219 | ||
8220 | /* Regular expression to match, if any. COMPILED is only valid when | |
8221 | REGEX is non-NULL. */ | |
8222 | char *regex; | |
8223 | regex_t compiled; | |
8224 | }; | |
8225 | ||
8226 | static void | |
8227 | dtor_catch_solib (struct breakpoint *b) | |
8228 | { | |
8229 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8230 | ||
8231 | if (self->regex) | |
8232 | regfree (&self->compiled); | |
8233 | xfree (self->regex); | |
8234 | ||
8235 | base_breakpoint_ops.dtor (b); | |
8236 | } | |
8237 | ||
8238 | static int | |
8239 | insert_catch_solib (struct bp_location *ignore) | |
8240 | { | |
8241 | return 0; | |
8242 | } | |
8243 | ||
8244 | static int | |
8245 | remove_catch_solib (struct bp_location *ignore) | |
8246 | { | |
8247 | return 0; | |
8248 | } | |
8249 | ||
8250 | static int | |
8251 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
8252 | struct address_space *aspace, | |
8253 | CORE_ADDR bp_addr, | |
8254 | const struct target_waitstatus *ws) | |
8255 | { | |
8256 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8257 | struct breakpoint *other; | |
8258 | ||
8259 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8260 | return 1; | |
8261 | ||
8262 | ALL_BREAKPOINTS (other) | |
8263 | { | |
8264 | struct bp_location *other_bl; | |
8265 | ||
8266 | if (other == bl->owner) | |
8267 | continue; | |
8268 | ||
8269 | if (other->type != bp_shlib_event) | |
8270 | continue; | |
8271 | ||
8272 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
8273 | continue; | |
8274 | ||
8275 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8276 | { | |
8277 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8278 | return 1; | |
8279 | } | |
8280 | } | |
8281 | ||
8282 | return 0; | |
8283 | } | |
8284 | ||
8285 | static void | |
8286 | check_status_catch_solib (struct bpstats *bs) | |
8287 | { | |
8288 | struct solib_catchpoint *self | |
8289 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8290 | int ix; | |
8291 | ||
8292 | if (self->is_load) | |
8293 | { | |
8294 | struct so_list *iter; | |
8295 | ||
8296 | for (ix = 0; | |
8297 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8298 | ix, iter); | |
8299 | ++ix) | |
8300 | { | |
8301 | if (!self->regex | |
8302 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
8303 | return; | |
8304 | } | |
8305 | } | |
8306 | else | |
8307 | { | |
8308 | char *iter; | |
8309 | ||
8310 | for (ix = 0; | |
8311 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8312 | ix, iter); | |
8313 | ++ix) | |
8314 | { | |
8315 | if (!self->regex | |
8316 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
8317 | return; | |
8318 | } | |
8319 | } | |
8320 | ||
8321 | bs->stop = 0; | |
8322 | bs->print_it = print_it_noop; | |
8323 | } | |
8324 | ||
8325 | static enum print_stop_action | |
8326 | print_it_catch_solib (bpstat bs) | |
8327 | { | |
8328 | struct breakpoint *b = bs->breakpoint_at; | |
8329 | struct ui_out *uiout = current_uiout; | |
8330 | ||
8331 | annotate_catchpoint (b->number); | |
8332 | if (b->disposition == disp_del) | |
8333 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8334 | else | |
8335 | ui_out_text (uiout, "\nCatchpoint "); | |
8336 | ui_out_field_int (uiout, "bkptno", b->number); | |
8337 | ui_out_text (uiout, "\n"); | |
8338 | if (ui_out_is_mi_like_p (uiout)) | |
8339 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8340 | print_solib_event (1); | |
8341 | return PRINT_SRC_AND_LOC; | |
8342 | } | |
8343 | ||
8344 | static void | |
8345 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8346 | { | |
8347 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8348 | struct value_print_options opts; | |
8349 | struct ui_out *uiout = current_uiout; | |
8350 | char *msg; | |
8351 | ||
8352 | get_user_print_options (&opts); | |
8353 | /* Field 4, the address, is omitted (which makes the columns not | |
8354 | line up too nicely with the headers, but the effect is relatively | |
8355 | readable). */ | |
8356 | if (opts.addressprint) | |
8357 | { | |
8358 | annotate_field (4); | |
8359 | ui_out_field_skip (uiout, "addr"); | |
8360 | } | |
8361 | ||
8362 | annotate_field (5); | |
8363 | if (self->is_load) | |
8364 | { | |
8365 | if (self->regex) | |
8366 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8367 | else | |
8368 | msg = xstrdup (_("load of library")); | |
8369 | } | |
8370 | else | |
8371 | { | |
8372 | if (self->regex) | |
8373 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8374 | else | |
8375 | msg = xstrdup (_("unload of library")); | |
8376 | } | |
8377 | ui_out_field_string (uiout, "what", msg); | |
8378 | xfree (msg); | |
8ac3646f TT |
8379 | |
8380 | if (ui_out_is_mi_like_p (uiout)) | |
8381 | ui_out_field_string (uiout, "catch-type", | |
8382 | self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8383 | } |
8384 | ||
8385 | static void | |
8386 | print_mention_catch_solib (struct breakpoint *b) | |
8387 | { | |
8388 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8389 | ||
8390 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8391 | self->is_load ? "load" : "unload"); | |
8392 | } | |
8393 | ||
8394 | static void | |
8395 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8396 | { | |
8397 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8398 | ||
8399 | fprintf_unfiltered (fp, "%s %s", | |
8400 | b->disposition == disp_del ? "tcatch" : "catch", | |
8401 | self->is_load ? "load" : "unload"); | |
8402 | if (self->regex) | |
8403 | fprintf_unfiltered (fp, " %s", self->regex); | |
8404 | fprintf_unfiltered (fp, "\n"); | |
8405 | } | |
8406 | ||
8407 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8408 | ||
91985142 MG |
8409 | /* Shared helper function (MI and CLI) for creating and installing |
8410 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8411 | the events to be caught are load events, otherwise they are | |
8412 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8413 | temporary one. If ENABLED is non-zero the catchpoint is | |
8414 | created in an enabled state. */ | |
edcc5120 | 8415 | |
91985142 MG |
8416 | void |
8417 | add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled) | |
edcc5120 TT |
8418 | { |
8419 | struct solib_catchpoint *c; | |
8420 | struct gdbarch *gdbarch = get_current_arch (); | |
edcc5120 TT |
8421 | struct cleanup *cleanup; |
8422 | ||
edcc5120 TT |
8423 | if (!arg) |
8424 | arg = ""; | |
8425 | arg = skip_spaces (arg); | |
8426 | ||
8427 | c = XCNEW (struct solib_catchpoint); | |
8428 | cleanup = make_cleanup (xfree, c); | |
8429 | ||
8430 | if (*arg != '\0') | |
8431 | { | |
8432 | int errcode; | |
8433 | ||
8434 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
8435 | if (errcode != 0) | |
8436 | { | |
8437 | char *err = get_regcomp_error (errcode, &c->compiled); | |
8438 | ||
8439 | make_cleanup (xfree, err); | |
8440 | error (_("Invalid regexp (%s): %s"), err, arg); | |
8441 | } | |
8442 | c->regex = xstrdup (arg); | |
8443 | } | |
8444 | ||
8445 | c->is_load = is_load; | |
91985142 | 8446 | init_catchpoint (&c->base, gdbarch, is_temp, NULL, |
edcc5120 TT |
8447 | &catch_solib_breakpoint_ops); |
8448 | ||
91985142 MG |
8449 | c->base.enable_state = enabled ? bp_enabled : bp_disabled; |
8450 | ||
edcc5120 TT |
8451 | discard_cleanups (cleanup); |
8452 | install_breakpoint (0, &c->base, 1); | |
8453 | } | |
8454 | ||
91985142 MG |
8455 | /* A helper function that does all the work for "catch load" and |
8456 | "catch unload". */ | |
8457 | ||
8458 | static void | |
8459 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8460 | struct cmd_list_element *command) | |
8461 | { | |
8462 | int tempflag; | |
8463 | const int enabled = 1; | |
8464 | ||
8465 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8466 | ||
8467 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8468 | } | |
8469 | ||
edcc5120 TT |
8470 | static void |
8471 | catch_load_command_1 (char *arg, int from_tty, | |
8472 | struct cmd_list_element *command) | |
8473 | { | |
8474 | catch_load_or_unload (arg, from_tty, 1, command); | |
8475 | } | |
8476 | ||
8477 | static void | |
8478 | catch_unload_command_1 (char *arg, int from_tty, | |
8479 | struct cmd_list_element *command) | |
8480 | { | |
8481 | catch_load_or_unload (arg, from_tty, 0, command); | |
8482 | } | |
8483 | ||
be5c67c1 PA |
8484 | /* An instance of this type is used to represent a syscall catchpoint. |
8485 | It includes a "struct breakpoint" as a kind of base class; users | |
8486 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8487 | really of this type iff its ops pointer points to | |
8488 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
8489 | ||
8490 | struct syscall_catchpoint | |
8491 | { | |
8492 | /* The base class. */ | |
8493 | struct breakpoint base; | |
8494 | ||
8495 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
8496 | syscall has been specified for filtering, its value is NULL. | |
8497 | Otherwise, it holds a list of all syscalls to be caught. The | |
8498 | list elements are allocated with xmalloc. */ | |
8499 | VEC(int) *syscalls_to_be_caught; | |
8500 | }; | |
8501 | ||
8502 | /* Implement the "dtor" breakpoint_ops method for syscall | |
8503 | catchpoints. */ | |
8504 | ||
8505 | static void | |
8506 | dtor_catch_syscall (struct breakpoint *b) | |
8507 | { | |
8508 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
8509 | ||
8510 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 8511 | |
2060206e | 8512 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
8513 | } |
8514 | ||
fa3064dd YQ |
8515 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
8516 | ||
8517 | struct catch_syscall_inferior_data | |
8518 | { | |
8519 | /* We keep a count of the number of times the user has requested a | |
8520 | particular syscall to be tracked, and pass this information to the | |
8521 | target. This lets capable targets implement filtering directly. */ | |
8522 | ||
8523 | /* Number of times that "any" syscall is requested. */ | |
8524 | int any_syscall_count; | |
8525 | ||
8526 | /* Count of each system call. */ | |
8527 | VEC(int) *syscalls_counts; | |
8528 | ||
8529 | /* This counts all syscall catch requests, so we can readily determine | |
8530 | if any catching is necessary. */ | |
8531 | int total_syscalls_count; | |
8532 | }; | |
8533 | ||
8534 | static struct catch_syscall_inferior_data* | |
8535 | get_catch_syscall_inferior_data (struct inferior *inf) | |
8536 | { | |
8537 | struct catch_syscall_inferior_data *inf_data; | |
8538 | ||
8539 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
8540 | if (inf_data == NULL) | |
8541 | { | |
41bf6aca | 8542 | inf_data = XCNEW (struct catch_syscall_inferior_data); |
fa3064dd YQ |
8543 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); |
8544 | } | |
8545 | ||
8546 | return inf_data; | |
8547 | } | |
8548 | ||
8549 | static void | |
8550 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
8551 | { | |
8552 | xfree (arg); | |
8553 | } | |
8554 | ||
8555 | ||
a96d9b2e SDJ |
8556 | /* Implement the "insert" breakpoint_ops method for syscall |
8557 | catchpoints. */ | |
8558 | ||
77b06cd7 TJB |
8559 | static int |
8560 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 8561 | { |
be5c67c1 | 8562 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8563 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8564 | struct catch_syscall_inferior_data *inf_data |
8565 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8566 | |
fa3064dd | 8567 | ++inf_data->total_syscalls_count; |
be5c67c1 | 8568 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8569 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
8570 | else |
8571 | { | |
8572 | int i, iter; | |
cc59ec59 | 8573 | |
a96d9b2e | 8574 | for (i = 0; |
be5c67c1 | 8575 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8576 | i++) |
8577 | { | |
8578 | int elem; | |
cc59ec59 | 8579 | |
fa3064dd | 8580 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 8581 | { |
fa3064dd | 8582 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
8583 | uintptr_t vec_addr_offset |
8584 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 8585 | uintptr_t vec_addr; |
fa3064dd YQ |
8586 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
8587 | vec_addr = ((uintptr_t) VEC_address (int, | |
8588 | inf_data->syscalls_counts) | |
8589 | + vec_addr_offset); | |
a96d9b2e SDJ |
8590 | memset ((void *) vec_addr, 0, |
8591 | (iter + 1 - old_size) * sizeof (int)); | |
8592 | } | |
fa3064dd YQ |
8593 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8594 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
8595 | } |
8596 | } | |
8597 | ||
dfd4cc63 | 8598 | return target_set_syscall_catchpoint (ptid_get_pid (inferior_ptid), |
fa3064dd YQ |
8599 | inf_data->total_syscalls_count != 0, |
8600 | inf_data->any_syscall_count, | |
8601 | VEC_length (int, | |
8602 | inf_data->syscalls_counts), | |
8603 | VEC_address (int, | |
8604 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
8605 | } |
8606 | ||
8607 | /* Implement the "remove" breakpoint_ops method for syscall | |
8608 | catchpoints. */ | |
8609 | ||
8610 | static int | |
77b06cd7 | 8611 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 8612 | { |
be5c67c1 | 8613 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8614 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8615 | struct catch_syscall_inferior_data *inf_data |
8616 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8617 | |
fa3064dd | 8618 | --inf_data->total_syscalls_count; |
be5c67c1 | 8619 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8620 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
8621 | else |
8622 | { | |
8623 | int i, iter; | |
cc59ec59 | 8624 | |
a96d9b2e | 8625 | for (i = 0; |
be5c67c1 | 8626 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8627 | i++) |
8628 | { | |
8629 | int elem; | |
fa3064dd | 8630 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
8631 | /* Shouldn't happen. */ |
8632 | continue; | |
fa3064dd YQ |
8633 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8634 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
8635 | } |
8636 | } | |
8637 | ||
dfd4cc63 | 8638 | return target_set_syscall_catchpoint (ptid_get_pid (inferior_ptid), |
fa3064dd YQ |
8639 | inf_data->total_syscalls_count != 0, |
8640 | inf_data->any_syscall_count, | |
8641 | VEC_length (int, | |
8642 | inf_data->syscalls_counts), | |
3e43a32a | 8643 | VEC_address (int, |
fa3064dd | 8644 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
8645 | } |
8646 | ||
8647 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
8648 | catchpoints. */ | |
8649 | ||
8650 | static int | |
f1310107 | 8651 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
8652 | struct address_space *aspace, CORE_ADDR bp_addr, |
8653 | const struct target_waitstatus *ws) | |
a96d9b2e | 8654 | { |
4a64f543 MS |
8655 | /* We must check if we are catching specific syscalls in this |
8656 | breakpoint. If we are, then we must guarantee that the called | |
8657 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 8658 | int syscall_number = 0; |
be5c67c1 PA |
8659 | const struct syscall_catchpoint *c |
8660 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 8661 | |
f90263c1 TT |
8662 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
8663 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
8664 | return 0; |
8665 | ||
f90263c1 TT |
8666 | syscall_number = ws->value.syscall_number; |
8667 | ||
a96d9b2e | 8668 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 8669 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8670 | { |
8671 | int i, iter; | |
cc59ec59 | 8672 | |
a96d9b2e | 8673 | for (i = 0; |
be5c67c1 | 8674 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8675 | i++) |
8676 | if (syscall_number == iter) | |
4924df79 GKB |
8677 | return 1; |
8678 | ||
8679 | return 0; | |
a96d9b2e SDJ |
8680 | } |
8681 | ||
8682 | return 1; | |
8683 | } | |
8684 | ||
8685 | /* Implement the "print_it" breakpoint_ops method for syscall | |
8686 | catchpoints. */ | |
8687 | ||
8688 | static enum print_stop_action | |
348d480f | 8689 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 8690 | { |
36dfb11c | 8691 | struct ui_out *uiout = current_uiout; |
348d480f | 8692 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
8693 | /* These are needed because we want to know in which state a |
8694 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
8695 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
8696 | must print "called syscall" or "returned from syscall". */ | |
8697 | ptid_t ptid; | |
8698 | struct target_waitstatus last; | |
8699 | struct syscall s; | |
a96d9b2e SDJ |
8700 | |
8701 | get_last_target_status (&ptid, &last); | |
8702 | ||
8703 | get_syscall_by_number (last.value.syscall_number, &s); | |
8704 | ||
8705 | annotate_catchpoint (b->number); | |
8706 | ||
36dfb11c TT |
8707 | if (b->disposition == disp_del) |
8708 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 8709 | else |
36dfb11c TT |
8710 | ui_out_text (uiout, "\nCatchpoint "); |
8711 | if (ui_out_is_mi_like_p (uiout)) | |
8712 | { | |
8713 | ui_out_field_string (uiout, "reason", | |
8714 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
8715 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
8716 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
8717 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8718 | } | |
8719 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
8720 | |
8721 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
8722 | ui_out_text (uiout, " (call to syscall "); |
8723 | else | |
8724 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 8725 | |
36dfb11c TT |
8726 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
8727 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
8728 | if (s.name != NULL) | |
8729 | ui_out_field_string (uiout, "syscall-name", s.name); | |
8730 | ||
8731 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
8732 | |
8733 | return PRINT_SRC_AND_LOC; | |
8734 | } | |
8735 | ||
8736 | /* Implement the "print_one" breakpoint_ops method for syscall | |
8737 | catchpoints. */ | |
8738 | ||
8739 | static void | |
8740 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 8741 | struct bp_location **last_loc) |
a96d9b2e | 8742 | { |
be5c67c1 | 8743 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 8744 | struct value_print_options opts; |
79a45e25 | 8745 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
8746 | |
8747 | get_user_print_options (&opts); | |
4a64f543 MS |
8748 | /* Field 4, the address, is omitted (which makes the columns not |
8749 | line up too nicely with the headers, but the effect is relatively | |
8750 | readable). */ | |
a96d9b2e SDJ |
8751 | if (opts.addressprint) |
8752 | ui_out_field_skip (uiout, "addr"); | |
8753 | annotate_field (5); | |
8754 | ||
be5c67c1 PA |
8755 | if (c->syscalls_to_be_caught |
8756 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
8757 | ui_out_text (uiout, "syscalls \""); |
8758 | else | |
8759 | ui_out_text (uiout, "syscall \""); | |
8760 | ||
be5c67c1 | 8761 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8762 | { |
8763 | int i, iter; | |
8764 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 8765 | |
a96d9b2e | 8766 | for (i = 0; |
be5c67c1 | 8767 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8768 | i++) |
8769 | { | |
8770 | char *x = text; | |
8771 | struct syscall s; | |
8772 | get_syscall_by_number (iter, &s); | |
8773 | ||
8774 | if (s.name != NULL) | |
8775 | text = xstrprintf ("%s%s, ", text, s.name); | |
8776 | else | |
8777 | text = xstrprintf ("%s%d, ", text, iter); | |
8778 | ||
8779 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 8780 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
8781 | on every call. */ |
8782 | xfree (x); | |
8783 | } | |
8784 | /* Remove the last comma. */ | |
8785 | text[strlen (text) - 2] = '\0'; | |
8786 | ui_out_field_string (uiout, "what", text); | |
8787 | } | |
8788 | else | |
8789 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
8790 | ui_out_text (uiout, "\" "); | |
8ac3646f TT |
8791 | |
8792 | if (ui_out_is_mi_like_p (uiout)) | |
8793 | ui_out_field_string (uiout, "catch-type", "syscall"); | |
a96d9b2e SDJ |
8794 | } |
8795 | ||
8796 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
8797 | catchpoints. */ | |
8798 | ||
8799 | static void | |
8800 | print_mention_catch_syscall (struct breakpoint *b) | |
8801 | { | |
be5c67c1 PA |
8802 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8803 | ||
8804 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
8805 | { |
8806 | int i, iter; | |
8807 | ||
be5c67c1 | 8808 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
8809 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
8810 | else | |
8811 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
8812 | ||
8813 | for (i = 0; | |
be5c67c1 | 8814 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8815 | i++) |
8816 | { | |
8817 | struct syscall s; | |
8818 | get_syscall_by_number (iter, &s); | |
8819 | ||
8820 | if (s.name) | |
8821 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
8822 | else | |
8823 | printf_filtered (" %d", s.number); | |
8824 | } | |
8825 | printf_filtered (")"); | |
8826 | } | |
8827 | else | |
8828 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
8829 | b->number); | |
8830 | } | |
8831 | ||
6149aea9 PA |
8832 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
8833 | catchpoints. */ | |
8834 | ||
8835 | static void | |
8836 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
8837 | { | |
be5c67c1 PA |
8838 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8839 | ||
6149aea9 PA |
8840 | fprintf_unfiltered (fp, "catch syscall"); |
8841 | ||
be5c67c1 | 8842 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
8843 | { |
8844 | int i, iter; | |
8845 | ||
8846 | for (i = 0; | |
be5c67c1 | 8847 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
8848 | i++) |
8849 | { | |
8850 | struct syscall s; | |
8851 | ||
8852 | get_syscall_by_number (iter, &s); | |
8853 | if (s.name) | |
8854 | fprintf_unfiltered (fp, " %s", s.name); | |
8855 | else | |
8856 | fprintf_unfiltered (fp, " %d", s.number); | |
8857 | } | |
8858 | } | |
d9b3f62e | 8859 | print_recreate_thread (b, fp); |
6149aea9 PA |
8860 | } |
8861 | ||
a96d9b2e SDJ |
8862 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
8863 | ||
2060206e | 8864 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
8865 | |
8866 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
8867 | ||
8868 | static int | |
8869 | syscall_catchpoint_p (struct breakpoint *b) | |
8870 | { | |
8871 | return (b->ops == &catch_syscall_breakpoint_ops); | |
8872 | } | |
8873 | ||
346774a9 PA |
8874 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8875 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8876 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8877 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8878 | |
ab04a2af | 8879 | void |
346774a9 PA |
8880 | init_catchpoint (struct breakpoint *b, |
8881 | struct gdbarch *gdbarch, int tempflag, | |
8882 | char *cond_string, | |
c0a91b2b | 8883 | const struct breakpoint_ops *ops) |
c906108c | 8884 | { |
c5aa993b | 8885 | struct symtab_and_line sal; |
346774a9 | 8886 | |
fe39c653 | 8887 | init_sal (&sal); |
6c95b8df | 8888 | sal.pspace = current_program_space; |
c5aa993b | 8889 | |
28010a5d | 8890 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8891 | |
1b36a34b | 8892 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8893 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8894 | } |
8895 | ||
28010a5d | 8896 | void |
3ea46bff | 8897 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8898 | { |
8899 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8900 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8901 | if (is_tracepoint (b)) |
8902 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8903 | if (!internal) |
8904 | mention (b); | |
c56053d2 | 8905 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8906 | |
8907 | if (update_gll) | |
44702360 | 8908 | update_global_location_list (UGLL_MAY_INSERT); |
c56053d2 PA |
8909 | } |
8910 | ||
9b70b993 | 8911 | static void |
a6d9a66e UW |
8912 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8913 | int tempflag, char *cond_string, | |
c0a91b2b | 8914 | const struct breakpoint_ops *ops) |
c906108c | 8915 | { |
e29a4733 | 8916 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8917 | |
e29a4733 PA |
8918 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8919 | ||
8920 | c->forked_inferior_pid = null_ptid; | |
8921 | ||
3ea46bff | 8922 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8923 | } |
8924 | ||
fe798b75 JB |
8925 | /* Exec catchpoints. */ |
8926 | ||
b4d90040 PA |
8927 | /* An instance of this type is used to represent an exec catchpoint. |
8928 | It includes a "struct breakpoint" as a kind of base class; users | |
8929 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8930 | really of this type iff its ops pointer points to | |
8931 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8932 | ||
8933 | struct exec_catchpoint | |
8934 | { | |
8935 | /* The base class. */ | |
8936 | struct breakpoint base; | |
8937 | ||
8938 | /* Filename of a program whose exec triggered this catchpoint. | |
8939 | This field is only valid immediately after this catchpoint has | |
8940 | triggered. */ | |
8941 | char *exec_pathname; | |
8942 | }; | |
8943 | ||
8944 | /* Implement the "dtor" breakpoint_ops method for exec | |
8945 | catchpoints. */ | |
8946 | ||
8947 | static void | |
8948 | dtor_catch_exec (struct breakpoint *b) | |
8949 | { | |
8950 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8951 | ||
8952 | xfree (c->exec_pathname); | |
348d480f | 8953 | |
2060206e | 8954 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8955 | } |
8956 | ||
77b06cd7 TJB |
8957 | static int |
8958 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8959 | { |
dfd4cc63 | 8960 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8961 | } |
c906108c | 8962 | |
fe798b75 | 8963 | static int |
77b06cd7 | 8964 | remove_catch_exec (struct bp_location *bl) |
fe798b75 | 8965 | { |
dfd4cc63 | 8966 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8967 | } |
c906108c | 8968 | |
fe798b75 | 8969 | static int |
f1310107 | 8970 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8971 | struct address_space *aspace, CORE_ADDR bp_addr, |
8972 | const struct target_waitstatus *ws) | |
fe798b75 | 8973 | { |
b4d90040 PA |
8974 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8975 | ||
f90263c1 TT |
8976 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8977 | return 0; | |
8978 | ||
8979 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8980 | return 1; | |
fe798b75 | 8981 | } |
c906108c | 8982 | |
fe798b75 | 8983 | static enum print_stop_action |
348d480f | 8984 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8985 | { |
36dfb11c | 8986 | struct ui_out *uiout = current_uiout; |
348d480f | 8987 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8988 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8989 | ||
fe798b75 | 8990 | annotate_catchpoint (b->number); |
36dfb11c TT |
8991 | if (b->disposition == disp_del) |
8992 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8993 | else | |
8994 | ui_out_text (uiout, "\nCatchpoint "); | |
8995 | if (ui_out_is_mi_like_p (uiout)) | |
8996 | { | |
8997 | ui_out_field_string (uiout, "reason", | |
8998 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8999 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9000 | } | |
9001 | ui_out_field_int (uiout, "bkptno", b->number); | |
9002 | ui_out_text (uiout, " (exec'd "); | |
9003 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
9004 | ui_out_text (uiout, "), "); | |
9005 | ||
fe798b75 | 9006 | return PRINT_SRC_AND_LOC; |
c906108c SS |
9007 | } |
9008 | ||
fe798b75 | 9009 | static void |
a6d9a66e | 9010 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 9011 | { |
b4d90040 | 9012 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 9013 | struct value_print_options opts; |
79a45e25 | 9014 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
9015 | |
9016 | get_user_print_options (&opts); | |
9017 | ||
9018 | /* Field 4, the address, is omitted (which makes the columns | |
9019 | not line up too nicely with the headers, but the effect | |
9020 | is relatively readable). */ | |
9021 | if (opts.addressprint) | |
9022 | ui_out_field_skip (uiout, "addr"); | |
9023 | annotate_field (5); | |
9024 | ui_out_text (uiout, "exec"); | |
b4d90040 | 9025 | if (c->exec_pathname != NULL) |
fe798b75 JB |
9026 | { |
9027 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 9028 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
9029 | ui_out_text (uiout, "\" "); |
9030 | } | |
8ac3646f TT |
9031 | |
9032 | if (ui_out_is_mi_like_p (uiout)) | |
9033 | ui_out_field_string (uiout, "catch-type", "exec"); | |
fe798b75 JB |
9034 | } |
9035 | ||
9036 | static void | |
9037 | print_mention_catch_exec (struct breakpoint *b) | |
9038 | { | |
9039 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
9040 | } | |
9041 | ||
6149aea9 PA |
9042 | /* Implement the "print_recreate" breakpoint_ops method for exec |
9043 | catchpoints. */ | |
9044 | ||
9045 | static void | |
9046 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
9047 | { | |
9048 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 9049 | print_recreate_thread (b, fp); |
6149aea9 PA |
9050 | } |
9051 | ||
2060206e | 9052 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 9053 | |
a96d9b2e SDJ |
9054 | static void |
9055 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 9056 | const struct breakpoint_ops *ops) |
a96d9b2e | 9057 | { |
be5c67c1 | 9058 | struct syscall_catchpoint *c; |
a96d9b2e | 9059 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 9060 | |
be5c67c1 PA |
9061 | c = XNEW (struct syscall_catchpoint); |
9062 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
9063 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 9064 | |
3ea46bff | 9065 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
9066 | } |
9067 | ||
c906108c | 9068 | static int |
fba45db2 | 9069 | hw_breakpoint_used_count (void) |
c906108c | 9070 | { |
c906108c | 9071 | int i = 0; |
f1310107 TJB |
9072 | struct breakpoint *b; |
9073 | struct bp_location *bl; | |
c906108c SS |
9074 | |
9075 | ALL_BREAKPOINTS (b) | |
c5aa993b | 9076 | { |
d6b74ac4 | 9077 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
9078 | for (bl = b->loc; bl; bl = bl->next) |
9079 | { | |
9080 | /* Special types of hardware breakpoints may use more than | |
9081 | one register. */ | |
348d480f | 9082 | i += b->ops->resources_needed (bl); |
f1310107 | 9083 | } |
c5aa993b | 9084 | } |
c906108c SS |
9085 | |
9086 | return i; | |
9087 | } | |
9088 | ||
a1398e0c PA |
9089 | /* Returns the resources B would use if it were a hardware |
9090 | watchpoint. */ | |
9091 | ||
c906108c | 9092 | static int |
a1398e0c | 9093 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 9094 | { |
c906108c | 9095 | int i = 0; |
e09342b5 | 9096 | struct bp_location *bl; |
c906108c | 9097 | |
a1398e0c PA |
9098 | if (!breakpoint_enabled (b)) |
9099 | return 0; | |
9100 | ||
9101 | for (bl = b->loc; bl; bl = bl->next) | |
9102 | { | |
9103 | /* Special types of hardware watchpoints may use more than | |
9104 | one register. */ | |
9105 | i += b->ops->resources_needed (bl); | |
9106 | } | |
9107 | ||
9108 | return i; | |
9109 | } | |
9110 | ||
9111 | /* Returns the sum the used resources of all hardware watchpoints of | |
9112 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
9113 | the sum of the used resources of all hardware watchpoints of other | |
9114 | types _not_ TYPE. */ | |
9115 | ||
9116 | static int | |
9117 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
9118 | enum bptype type, int *other_type_used) | |
9119 | { | |
9120 | int i = 0; | |
9121 | struct breakpoint *b; | |
9122 | ||
c906108c SS |
9123 | *other_type_used = 0; |
9124 | ALL_BREAKPOINTS (b) | |
e09342b5 | 9125 | { |
a1398e0c PA |
9126 | if (b == except) |
9127 | continue; | |
e09342b5 TJB |
9128 | if (!breakpoint_enabled (b)) |
9129 | continue; | |
9130 | ||
a1398e0c PA |
9131 | if (b->type == type) |
9132 | i += hw_watchpoint_use_count (b); | |
9133 | else if (is_hardware_watchpoint (b)) | |
9134 | *other_type_used = 1; | |
e09342b5 TJB |
9135 | } |
9136 | ||
c906108c SS |
9137 | return i; |
9138 | } | |
9139 | ||
c906108c | 9140 | void |
fba45db2 | 9141 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 9142 | { |
c5aa993b | 9143 | struct breakpoint *b; |
c906108c SS |
9144 | |
9145 | ALL_BREAKPOINTS (b) | |
c5aa993b | 9146 | { |
cc60f2e3 | 9147 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 9148 | { |
b5de0fa7 | 9149 | b->enable_state = bp_call_disabled; |
44702360 | 9150 | update_global_location_list (UGLL_DONT_INSERT); |
c5aa993b JM |
9151 | } |
9152 | } | |
c906108c SS |
9153 | } |
9154 | ||
9155 | void | |
fba45db2 | 9156 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 9157 | { |
c5aa993b | 9158 | struct breakpoint *b; |
c906108c SS |
9159 | |
9160 | ALL_BREAKPOINTS (b) | |
c5aa993b | 9161 | { |
cc60f2e3 | 9162 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 9163 | { |
b5de0fa7 | 9164 | b->enable_state = bp_enabled; |
44702360 | 9165 | update_global_location_list (UGLL_MAY_INSERT); |
c5aa993b JM |
9166 | } |
9167 | } | |
c906108c SS |
9168 | } |
9169 | ||
8bea4e01 UW |
9170 | void |
9171 | disable_breakpoints_before_startup (void) | |
9172 | { | |
6c95b8df | 9173 | current_program_space->executing_startup = 1; |
44702360 | 9174 | update_global_location_list (UGLL_DONT_INSERT); |
8bea4e01 UW |
9175 | } |
9176 | ||
9177 | void | |
9178 | enable_breakpoints_after_startup (void) | |
9179 | { | |
6c95b8df | 9180 | current_program_space->executing_startup = 0; |
f8eba3c6 | 9181 | breakpoint_re_set (); |
8bea4e01 UW |
9182 | } |
9183 | ||
c906108c SS |
9184 | |
9185 | /* Set a breakpoint that will evaporate an end of command | |
9186 | at address specified by SAL. | |
9187 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
9188 | ||
9189 | struct breakpoint * | |
a6d9a66e UW |
9190 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
9191 | struct frame_id frame_id, enum bptype type) | |
c906108c | 9192 | { |
52f0bd74 | 9193 | struct breakpoint *b; |
edb3359d | 9194 | |
193facb3 JK |
9195 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
9196 | tail-called one. */ | |
9197 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 9198 | |
06edf0c0 | 9199 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
9200 | b->enable_state = bp_enabled; |
9201 | b->disposition = disp_donttouch; | |
818dd999 | 9202 | b->frame_id = frame_id; |
c906108c | 9203 | |
4a64f543 MS |
9204 | /* If we're debugging a multi-threaded program, then we want |
9205 | momentary breakpoints to be active in only a single thread of | |
9206 | control. */ | |
39f77062 KB |
9207 | if (in_thread_list (inferior_ptid)) |
9208 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 9209 | |
44702360 | 9210 | update_global_location_list_nothrow (UGLL_MAY_INSERT); |
74960c60 | 9211 | |
c906108c SS |
9212 | return b; |
9213 | } | |
611c83ae | 9214 | |
06edf0c0 | 9215 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
a1aa2221 LM |
9216 | The new breakpoint will have type TYPE, use OPS as its |
9217 | breakpoint_ops, and will set enabled to LOC_ENABLED. */ | |
e58b0e63 | 9218 | |
06edf0c0 PA |
9219 | static struct breakpoint * |
9220 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
9221 | enum bptype type, | |
a1aa2221 LM |
9222 | const struct breakpoint_ops *ops, |
9223 | int loc_enabled) | |
e58b0e63 PA |
9224 | { |
9225 | struct breakpoint *copy; | |
9226 | ||
06edf0c0 | 9227 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 9228 | copy->loc = allocate_bp_location (copy); |
0e30163f | 9229 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 9230 | |
a6d9a66e | 9231 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
9232 | copy->loc->requested_address = orig->loc->requested_address; |
9233 | copy->loc->address = orig->loc->address; | |
9234 | copy->loc->section = orig->loc->section; | |
6c95b8df | 9235 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 9236 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 9237 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 9238 | copy->loc->symtab = orig->loc->symtab; |
a1aa2221 | 9239 | copy->loc->enabled = loc_enabled; |
e58b0e63 PA |
9240 | copy->frame_id = orig->frame_id; |
9241 | copy->thread = orig->thread; | |
6c95b8df | 9242 | copy->pspace = orig->pspace; |
e58b0e63 PA |
9243 | |
9244 | copy->enable_state = bp_enabled; | |
9245 | copy->disposition = disp_donttouch; | |
9246 | copy->number = internal_breakpoint_number--; | |
9247 | ||
44702360 | 9248 | update_global_location_list_nothrow (UGLL_DONT_INSERT); |
e58b0e63 PA |
9249 | return copy; |
9250 | } | |
9251 | ||
06edf0c0 PA |
9252 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
9253 | ORIG is NULL. */ | |
9254 | ||
9255 | struct breakpoint * | |
9256 | clone_momentary_breakpoint (struct breakpoint *orig) | |
9257 | { | |
9258 | /* If there's nothing to clone, then return nothing. */ | |
9259 | if (orig == NULL) | |
9260 | return NULL; | |
9261 | ||
a1aa2221 | 9262 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops, 0); |
06edf0c0 PA |
9263 | } |
9264 | ||
611c83ae | 9265 | struct breakpoint * |
a6d9a66e UW |
9266 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
9267 | enum bptype type) | |
611c83ae PA |
9268 | { |
9269 | struct symtab_and_line sal; | |
9270 | ||
9271 | sal = find_pc_line (pc, 0); | |
9272 | sal.pc = pc; | |
9273 | sal.section = find_pc_overlay (pc); | |
9274 | sal.explicit_pc = 1; | |
9275 | ||
a6d9a66e | 9276 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 9277 | } |
c906108c | 9278 | \f |
c5aa993b | 9279 | |
c906108c SS |
9280 | /* Tell the user we have just set a breakpoint B. */ |
9281 | ||
9282 | static void | |
fba45db2 | 9283 | mention (struct breakpoint *b) |
c906108c | 9284 | { |
348d480f | 9285 | b->ops->print_mention (b); |
79a45e25 | 9286 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 9287 | return; |
c906108c SS |
9288 | printf_filtered ("\n"); |
9289 | } | |
c906108c | 9290 | \f |
c5aa993b | 9291 | |
0d381245 | 9292 | static struct bp_location * |
39d61571 | 9293 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
9294 | const struct symtab_and_line *sal) |
9295 | { | |
9296 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
9297 | CORE_ADDR adjusted_address; |
9298 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
9299 | ||
9300 | if (loc_gdbarch == NULL) | |
9301 | loc_gdbarch = b->gdbarch; | |
9302 | ||
9303 | /* Adjust the breakpoint's address prior to allocating a location. | |
9304 | Once we call allocate_bp_location(), that mostly uninitialized | |
9305 | location will be placed on the location chain. Adjustment of the | |
9306 | breakpoint may cause target_read_memory() to be called and we do | |
9307 | not want its scan of the location chain to find a breakpoint and | |
9308 | location that's only been partially initialized. */ | |
9309 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
9310 | sal->pc, b->type); | |
0d381245 | 9311 | |
d30113d4 | 9312 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 9313 | loc = allocate_bp_location (b); |
d30113d4 JK |
9314 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
9315 | tmp = &((*tmp)->next)) | |
0d381245 | 9316 | ; |
d30113d4 | 9317 | loc->next = *tmp; |
0d381245 | 9318 | *tmp = loc; |
3742cc8b | 9319 | |
0d381245 | 9320 | loc->requested_address = sal->pc; |
3742cc8b | 9321 | loc->address = adjusted_address; |
6c95b8df | 9322 | loc->pspace = sal->pspace; |
729662a5 TT |
9323 | loc->probe.probe = sal->probe; |
9324 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 9325 | gdb_assert (loc->pspace != NULL); |
0d381245 | 9326 | loc->section = sal->section; |
3742cc8b | 9327 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 9328 | loc->line_number = sal->line; |
2f202fde | 9329 | loc->symtab = sal->symtab; |
f8eba3c6 | 9330 | |
0e30163f JK |
9331 | set_breakpoint_location_function (loc, |
9332 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
9333 | return loc; |
9334 | } | |
514f746b AR |
9335 | \f |
9336 | ||
9337 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
9338 | return 0 otherwise. */ | |
9339 | ||
9340 | static int | |
9341 | bp_loc_is_permanent (struct bp_location *loc) | |
9342 | { | |
9343 | int len; | |
9344 | CORE_ADDR addr; | |
1afeeb75 | 9345 | const gdb_byte *bpoint; |
514f746b | 9346 | gdb_byte *target_mem; |
939c61fa JK |
9347 | struct cleanup *cleanup; |
9348 | int retval = 0; | |
514f746b AR |
9349 | |
9350 | gdb_assert (loc != NULL); | |
9351 | ||
9352 | addr = loc->address; | |
1afeeb75 | 9353 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 9354 | |
939c61fa | 9355 | /* Software breakpoints unsupported? */ |
1afeeb75 | 9356 | if (bpoint == NULL) |
939c61fa JK |
9357 | return 0; |
9358 | ||
514f746b AR |
9359 | target_mem = alloca (len); |
9360 | ||
939c61fa JK |
9361 | /* Enable the automatic memory restoration from breakpoints while |
9362 | we read the memory. Otherwise we could say about our temporary | |
9363 | breakpoints they are permanent. */ | |
6c95b8df PA |
9364 | cleanup = save_current_space_and_thread (); |
9365 | ||
9366 | switch_to_program_space_and_thread (loc->pspace); | |
9367 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 9368 | |
514f746b | 9369 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 9370 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 9371 | retval = 1; |
514f746b | 9372 | |
939c61fa JK |
9373 | do_cleanups (cleanup); |
9374 | ||
9375 | return retval; | |
514f746b AR |
9376 | } |
9377 | ||
e7e0cddf SS |
9378 | /* Build a command list for the dprintf corresponding to the current |
9379 | settings of the dprintf style options. */ | |
9380 | ||
9381 | static void | |
9382 | update_dprintf_command_list (struct breakpoint *b) | |
9383 | { | |
9384 | char *dprintf_args = b->extra_string; | |
9385 | char *printf_line = NULL; | |
9386 | ||
9387 | if (!dprintf_args) | |
9388 | return; | |
9389 | ||
9390 | dprintf_args = skip_spaces (dprintf_args); | |
9391 | ||
9392 | /* Allow a comma, as it may have terminated a location, but don't | |
9393 | insist on it. */ | |
9394 | if (*dprintf_args == ',') | |
9395 | ++dprintf_args; | |
9396 | dprintf_args = skip_spaces (dprintf_args); | |
9397 | ||
9398 | if (*dprintf_args != '"') | |
9399 | error (_("Bad format string, missing '\"'.")); | |
9400 | ||
d3ce09f5 | 9401 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 9402 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 9403 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
9404 | { |
9405 | if (!dprintf_function) | |
9406 | error (_("No function supplied for dprintf call")); | |
9407 | ||
9408 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
9409 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
9410 | dprintf_function, | |
9411 | dprintf_channel, | |
9412 | dprintf_args); | |
9413 | else | |
9414 | printf_line = xstrprintf ("call (void) %s (%s)", | |
9415 | dprintf_function, | |
9416 | dprintf_args); | |
9417 | } | |
d3ce09f5 SS |
9418 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
9419 | { | |
9420 | if (target_can_run_breakpoint_commands ()) | |
9421 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
9422 | else | |
9423 | { | |
9424 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
9425 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
9426 | } | |
9427 | } | |
e7e0cddf SS |
9428 | else |
9429 | internal_error (__FILE__, __LINE__, | |
9430 | _("Invalid dprintf style.")); | |
9431 | ||
f28045c2 | 9432 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 9433 | /* Manufacture a printf sequence. */ |
f28045c2 | 9434 | { |
9d6e6e84 HZ |
9435 | struct command_line *printf_cmd_line |
9436 | = xmalloc (sizeof (struct command_line)); | |
e7e0cddf | 9437 | |
f28045c2 YQ |
9438 | printf_cmd_line = xmalloc (sizeof (struct command_line)); |
9439 | printf_cmd_line->control_type = simple_control; | |
9440 | printf_cmd_line->body_count = 0; | |
9441 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 9442 | printf_cmd_line->next = NULL; |
f28045c2 | 9443 | printf_cmd_line->line = printf_line; |
e7e0cddf | 9444 | |
f28045c2 YQ |
9445 | breakpoint_set_commands (b, printf_cmd_line); |
9446 | } | |
e7e0cddf SS |
9447 | } |
9448 | ||
9449 | /* Update all dprintf commands, making their command lists reflect | |
9450 | current style settings. */ | |
9451 | ||
9452 | static void | |
9453 | update_dprintf_commands (char *args, int from_tty, | |
9454 | struct cmd_list_element *c) | |
9455 | { | |
9456 | struct breakpoint *b; | |
9457 | ||
9458 | ALL_BREAKPOINTS (b) | |
9459 | { | |
9460 | if (b->type == bp_dprintf) | |
9461 | update_dprintf_command_list (b); | |
9462 | } | |
9463 | } | |
c3f6f71d | 9464 | |
018d34a4 VP |
9465 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
9466 | as textual description of the location, and COND_STRING | |
db107f19 | 9467 | as condition expression. */ |
018d34a4 VP |
9468 | |
9469 | static void | |
d9b3f62e PA |
9470 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
9471 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9472 | char *filter, char *cond_string, |
e7e0cddf | 9473 | char *extra_string, |
d9b3f62e PA |
9474 | enum bptype type, enum bpdisp disposition, |
9475 | int thread, int task, int ignore_count, | |
c0a91b2b | 9476 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9477 | int enabled, int internal, unsigned flags, |
9478 | int display_canonical) | |
018d34a4 | 9479 | { |
0d381245 | 9480 | int i; |
018d34a4 VP |
9481 | |
9482 | if (type == bp_hardware_breakpoint) | |
9483 | { | |
fbbd034e AS |
9484 | int target_resources_ok; |
9485 | ||
9486 | i = hw_breakpoint_used_count (); | |
9487 | target_resources_ok = | |
9488 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
9489 | i + 1, 0); |
9490 | if (target_resources_ok == 0) | |
9491 | error (_("No hardware breakpoint support in the target.")); | |
9492 | else if (target_resources_ok < 0) | |
9493 | error (_("Hardware breakpoints used exceeds limit.")); | |
9494 | } | |
9495 | ||
6c95b8df PA |
9496 | gdb_assert (sals.nelts > 0); |
9497 | ||
0d381245 VP |
9498 | for (i = 0; i < sals.nelts; ++i) |
9499 | { | |
9500 | struct symtab_and_line sal = sals.sals[i]; | |
9501 | struct bp_location *loc; | |
9502 | ||
9503 | if (from_tty) | |
5af949e3 UW |
9504 | { |
9505 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
9506 | if (!loc_gdbarch) | |
9507 | loc_gdbarch = gdbarch; | |
9508 | ||
9509 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 9510 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 9511 | } |
0d381245 VP |
9512 | |
9513 | if (i == 0) | |
9514 | { | |
d9b3f62e | 9515 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 9516 | b->thread = thread; |
4a306c9a | 9517 | b->task = task; |
855a6e68 | 9518 | |
0d381245 | 9519 | b->cond_string = cond_string; |
e7e0cddf | 9520 | b->extra_string = extra_string; |
0d381245 | 9521 | b->ignore_count = ignore_count; |
41447f92 | 9522 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 9523 | b->disposition = disposition; |
6c95b8df | 9524 | |
44f238bb PA |
9525 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9526 | b->loc->inserted = 1; | |
9527 | ||
0fb4aa4b PA |
9528 | if (type == bp_static_tracepoint) |
9529 | { | |
d9b3f62e | 9530 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9531 | struct static_tracepoint_marker marker; |
9532 | ||
983af33b | 9533 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9534 | { |
9535 | /* We already know the marker exists, otherwise, we | |
9536 | wouldn't see a sal for it. */ | |
9537 | char *p = &addr_string[3]; | |
9538 | char *endp; | |
9539 | char *marker_str; | |
0fb4aa4b | 9540 | |
e9cafbcc | 9541 | p = skip_spaces (p); |
0fb4aa4b | 9542 | |
e9cafbcc | 9543 | endp = skip_to_space (p); |
0fb4aa4b PA |
9544 | |
9545 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9546 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9547 | |
3e43a32a MS |
9548 | printf_filtered (_("Probed static tracepoint " |
9549 | "marker \"%s\"\n"), | |
d9b3f62e | 9550 | t->static_trace_marker_id); |
0fb4aa4b PA |
9551 | } |
9552 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9553 | { | |
d9b3f62e | 9554 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9555 | release_static_tracepoint_marker (&marker); |
9556 | ||
3e43a32a MS |
9557 | printf_filtered (_("Probed static tracepoint " |
9558 | "marker \"%s\"\n"), | |
d9b3f62e | 9559 | t->static_trace_marker_id); |
0fb4aa4b PA |
9560 | } |
9561 | else | |
3e43a32a MS |
9562 | warning (_("Couldn't determine the static " |
9563 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9564 | } |
9565 | ||
0d381245 VP |
9566 | loc = b->loc; |
9567 | } | |
9568 | else | |
018d34a4 | 9569 | { |
39d61571 | 9570 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9571 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9572 | loc->inserted = 1; | |
0d381245 VP |
9573 | } |
9574 | ||
514f746b AR |
9575 | if (bp_loc_is_permanent (loc)) |
9576 | make_breakpoint_permanent (b); | |
9577 | ||
0d381245 VP |
9578 | if (b->cond_string) |
9579 | { | |
bbc13ae3 KS |
9580 | const char *arg = b->cond_string; |
9581 | ||
1bb9788d TT |
9582 | loc->cond = parse_exp_1 (&arg, loc->address, |
9583 | block_for_pc (loc->address), 0); | |
0d381245 | 9584 | if (*arg) |
588ae58c | 9585 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9586 | } |
e7e0cddf SS |
9587 | |
9588 | /* Dynamic printf requires and uses additional arguments on the | |
9589 | command line, otherwise it's an error. */ | |
9590 | if (type == bp_dprintf) | |
9591 | { | |
9592 | if (b->extra_string) | |
9593 | update_dprintf_command_list (b); | |
9594 | else | |
9595 | error (_("Format string required")); | |
9596 | } | |
9597 | else if (b->extra_string) | |
588ae58c | 9598 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9599 | } |
018d34a4 | 9600 | |
56435ebe | 9601 | b->display_canonical = display_canonical; |
018d34a4 VP |
9602 | if (addr_string) |
9603 | b->addr_string = addr_string; | |
9604 | else | |
9605 | /* addr_string has to be used or breakpoint_re_set will delete | |
9606 | me. */ | |
5af949e3 UW |
9607 | b->addr_string |
9608 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 9609 | b->filter = filter; |
d9b3f62e | 9610 | } |
018d34a4 | 9611 | |
d9b3f62e PA |
9612 | static void |
9613 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
9614 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9615 | char *filter, char *cond_string, |
e7e0cddf | 9616 | char *extra_string, |
d9b3f62e PA |
9617 | enum bptype type, enum bpdisp disposition, |
9618 | int thread, int task, int ignore_count, | |
c0a91b2b | 9619 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9620 | int enabled, int internal, unsigned flags, |
9621 | int display_canonical) | |
d9b3f62e PA |
9622 | { |
9623 | struct breakpoint *b; | |
9624 | struct cleanup *old_chain; | |
9625 | ||
9626 | if (is_tracepoint_type (type)) | |
9627 | { | |
9628 | struct tracepoint *t; | |
9629 | ||
9630 | t = XCNEW (struct tracepoint); | |
9631 | b = &t->base; | |
9632 | } | |
9633 | else | |
9634 | b = XNEW (struct breakpoint); | |
9635 | ||
9636 | old_chain = make_cleanup (xfree, b); | |
9637 | ||
9638 | init_breakpoint_sal (b, gdbarch, | |
9639 | sals, addr_string, | |
e7e0cddf | 9640 | filter, cond_string, extra_string, |
d9b3f62e PA |
9641 | type, disposition, |
9642 | thread, task, ignore_count, | |
9643 | ops, from_tty, | |
44f238bb PA |
9644 | enabled, internal, flags, |
9645 | display_canonical); | |
d9b3f62e PA |
9646 | discard_cleanups (old_chain); |
9647 | ||
3ea46bff | 9648 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9649 | } |
9650 | ||
9651 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9652 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9653 | value. COND_STRING, if not NULL, specified the condition to be | |
9654 | used for all breakpoints. Essentially the only case where | |
9655 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9656 | function. In that case, it's still not possible to specify | |
9657 | separate conditions for different overloaded functions, so | |
9658 | we take just a single condition string. | |
9659 | ||
c3f6f71d | 9660 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9661 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9662 | array contents). If the function fails (error() is called), the |
9663 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9664 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9665 | |
9666 | static void | |
8cdf0e15 | 9667 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9668 | struct linespec_result *canonical, |
e7e0cddf | 9669 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9670 | enum bptype type, enum bpdisp disposition, |
9671 | int thread, int task, int ignore_count, | |
c0a91b2b | 9672 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9673 | int enabled, int internal, unsigned flags) |
c906108c | 9674 | { |
018d34a4 | 9675 | int i; |
f8eba3c6 | 9676 | struct linespec_sals *lsal; |
cc59ec59 | 9677 | |
f8eba3c6 TT |
9678 | if (canonical->pre_expanded) |
9679 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9680 | ||
9681 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9682 | { |
f8eba3c6 TT |
9683 | /* Note that 'addr_string' can be NULL in the case of a plain |
9684 | 'break', without arguments. */ | |
9685 | char *addr_string = (canonical->addr_string | |
9686 | ? xstrdup (canonical->addr_string) | |
9687 | : NULL); | |
9688 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
9689 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 9690 | |
f8eba3c6 TT |
9691 | make_cleanup (xfree, filter_string); |
9692 | create_breakpoint_sal (gdbarch, lsal->sals, | |
9693 | addr_string, | |
9694 | filter_string, | |
e7e0cddf SS |
9695 | cond_string, extra_string, |
9696 | type, disposition, | |
84f4c1fe | 9697 | thread, task, ignore_count, ops, |
44f238bb | 9698 | from_tty, enabled, internal, flags, |
56435ebe | 9699 | canonical->special_display); |
f8eba3c6 | 9700 | discard_cleanups (inner); |
c3f6f71d | 9701 | } |
c3f6f71d | 9702 | } |
c906108c | 9703 | |
9998af43 | 9704 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 9705 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 9706 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
9707 | address strings. ADDRESS points to the end of the SAL. |
9708 | ||
9709 | The array and the line spec strings are allocated on the heap, it is | |
9710 | the caller's responsibility to free them. */ | |
c906108c | 9711 | |
b9362cc7 | 9712 | static void |
c3f6f71d | 9713 | parse_breakpoint_sals (char **address, |
58438ac1 | 9714 | struct linespec_result *canonical) |
c3f6f71d | 9715 | { |
c3f6f71d | 9716 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 9717 | breakpoint. */ |
c3f6f71d JM |
9718 | if ((*address) == NULL |
9719 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 9720 | { |
1bfeeb0f JL |
9721 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
9722 | address. */ | |
9723 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9724 | { |
f8eba3c6 | 9725 | struct linespec_sals lsal; |
c3f6f71d | 9726 | struct symtab_and_line sal; |
1c8cdcb1 | 9727 | CORE_ADDR pc; |
cc59ec59 | 9728 | |
4a64f543 | 9729 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 9730 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 9731 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
9732 | |
9733 | /* Set sal's pspace, pc, symtab, and line to the values | |
1c8cdcb1 JK |
9734 | corresponding to the last call to print_frame_info. |
9735 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9736 | as the breakpoint line number is inappropriate otherwise. | |
9737 | find_pc_line would adjust PC, re-set it back. */ | |
1bfeeb0f | 9738 | get_last_displayed_sal (&sal); |
1c8cdcb1 JK |
9739 | pc = sal.pc; |
9740 | sal = find_pc_line (pc, 0); | |
00903456 | 9741 | |
4a64f543 | 9742 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
9743 | where PC is the last displayed codepoint's address. So |
9744 | make sure to set sal.explicit_pc to prevent GDB from | |
9745 | trying to expand the list of sals to include all other | |
9746 | instances with the same symtab and line. */ | |
1c8cdcb1 | 9747 | sal.pc = pc; |
00903456 JK |
9748 | sal.explicit_pc = 1; |
9749 | ||
f8eba3c6 TT |
9750 | lsal.sals.sals[0] = sal; |
9751 | lsal.sals.nelts = 1; | |
9752 | lsal.canonical = NULL; | |
9753 | ||
9754 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
9755 | } |
9756 | else | |
8a3fe4f8 | 9757 | error (_("No default breakpoint address now.")); |
c906108c SS |
9758 | } |
9759 | else | |
9760 | { | |
cc80f267 JK |
9761 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
9762 | ||
c906108c | 9763 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
9764 | current_source_symtab (which is decode_line_1's default). |
9765 | This should produce the results we want almost all of the | |
cc80f267 JK |
9766 | time while leaving default_breakpoint_* alone. |
9767 | ||
9768 | ObjC: However, don't match an Objective-C method name which | |
9769 | may have a '+' or '-' succeeded by a '['. */ | |
9770 | if (last_displayed_sal_is_valid () | |
9771 | && (!cursal.symtab | |
9772 | || ((strchr ("+-", (*address)[0]) != NULL) | |
9773 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
9774 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
9775 | get_last_displayed_symtab (), | |
9776 | get_last_displayed_line (), | |
9777 | canonical, NULL, NULL); | |
c906108c | 9778 | else |
f8eba3c6 | 9779 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 9780 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 9781 | } |
c3f6f71d | 9782 | } |
c906108c | 9783 | |
c906108c | 9784 | |
c3f6f71d | 9785 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9786 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9787 | |
b9362cc7 | 9788 | static void |
23e7acfb | 9789 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9790 | { |
9791 | int i; | |
cc59ec59 | 9792 | |
c3f6f71d | 9793 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9794 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9795 | } |
9796 | ||
7a697b8d SS |
9797 | /* Fast tracepoints may have restrictions on valid locations. For |
9798 | instance, a fast tracepoint using a jump instead of a trap will | |
9799 | likely have to overwrite more bytes than a trap would, and so can | |
9800 | only be placed where the instruction is longer than the jump, or a | |
9801 | multi-instruction sequence does not have a jump into the middle of | |
9802 | it, etc. */ | |
9803 | ||
9804 | static void | |
9805 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9806 | struct symtabs_and_lines *sals) | |
9807 | { | |
9808 | int i, rslt; | |
9809 | struct symtab_and_line *sal; | |
9810 | char *msg; | |
9811 | struct cleanup *old_chain; | |
9812 | ||
9813 | for (i = 0; i < sals->nelts; i++) | |
9814 | { | |
f8eba3c6 TT |
9815 | struct gdbarch *sarch; |
9816 | ||
7a697b8d SS |
9817 | sal = &sals->sals[i]; |
9818 | ||
f8eba3c6 TT |
9819 | sarch = get_sal_arch (*sal); |
9820 | /* We fall back to GDBARCH if there is no architecture | |
9821 | associated with SAL. */ | |
9822 | if (sarch == NULL) | |
9823 | sarch = gdbarch; | |
9824 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9825 | NULL, &msg); |
9826 | old_chain = make_cleanup (xfree, msg); | |
9827 | ||
9828 | if (!rslt) | |
9829 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9830 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9831 | |
9832 | do_cleanups (old_chain); | |
9833 | } | |
9834 | } | |
9835 | ||
af4908ba KS |
9836 | /* Issue an invalid thread ID error. */ |
9837 | ||
9838 | static void ATTRIBUTE_NORETURN | |
9839 | invalid_thread_id_error (int id) | |
9840 | { | |
9841 | error (_("Unknown thread %d."), id); | |
9842 | } | |
9843 | ||
018d34a4 VP |
9844 | /* Given TOK, a string specification of condition and thread, as |
9845 | accepted by the 'break' command, extract the condition | |
9846 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9847 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9848 | If no condition is found, *COND_STRING is set to NULL. |
9849 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9850 | |
9851 | static void | |
bbc13ae3 | 9852 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9853 | char **cond_string, int *thread, int *task, |
9854 | char **rest) | |
018d34a4 VP |
9855 | { |
9856 | *cond_string = NULL; | |
9857 | *thread = -1; | |
ed1d1739 KS |
9858 | *task = 0; |
9859 | *rest = NULL; | |
9860 | ||
018d34a4 VP |
9861 | while (tok && *tok) |
9862 | { | |
bbc13ae3 | 9863 | const char *end_tok; |
018d34a4 | 9864 | int toklen; |
bbc13ae3 KS |
9865 | const char *cond_start = NULL; |
9866 | const char *cond_end = NULL; | |
cc59ec59 | 9867 | |
bbc13ae3 | 9868 | tok = skip_spaces_const (tok); |
e7e0cddf SS |
9869 | |
9870 | if ((*tok == '"' || *tok == ',') && rest) | |
9871 | { | |
9872 | *rest = savestring (tok, strlen (tok)); | |
9873 | return; | |
9874 | } | |
9875 | ||
bbc13ae3 | 9876 | end_tok = skip_to_space_const (tok); |
d634f2de | 9877 | |
018d34a4 | 9878 | toklen = end_tok - tok; |
d634f2de | 9879 | |
018d34a4 VP |
9880 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9881 | { | |
f7545552 TT |
9882 | struct expression *expr; |
9883 | ||
018d34a4 | 9884 | tok = cond_start = end_tok + 1; |
1bb9788d | 9885 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9886 | xfree (expr); |
018d34a4 | 9887 | cond_end = tok; |
d634f2de | 9888 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9889 | } |
9890 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9891 | { | |
9892 | char *tmptok; | |
d634f2de | 9893 | |
018d34a4 | 9894 | tok = end_tok + 1; |
bbc13ae3 | 9895 | *thread = strtol (tok, &tmptok, 0); |
018d34a4 VP |
9896 | if (tok == tmptok) |
9897 | error (_("Junk after thread keyword.")); | |
9898 | if (!valid_thread_id (*thread)) | |
af4908ba | 9899 | invalid_thread_id_error (*thread); |
bbc13ae3 | 9900 | tok = tmptok; |
018d34a4 | 9901 | } |
4a306c9a JB |
9902 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9903 | { | |
9904 | char *tmptok; | |
9905 | ||
9906 | tok = end_tok + 1; | |
bbc13ae3 | 9907 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9908 | if (tok == tmptok) |
9909 | error (_("Junk after task keyword.")); | |
9910 | if (!valid_task_id (*task)) | |
b6199126 | 9911 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9912 | tok = tmptok; |
4a306c9a | 9913 | } |
e7e0cddf SS |
9914 | else if (rest) |
9915 | { | |
9916 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9917 | return; |
e7e0cddf | 9918 | } |
018d34a4 VP |
9919 | else |
9920 | error (_("Junk at end of arguments.")); | |
9921 | } | |
9922 | } | |
9923 | ||
0fb4aa4b PA |
9924 | /* Decode a static tracepoint marker spec. */ |
9925 | ||
9926 | static struct symtabs_and_lines | |
9927 | decode_static_tracepoint_spec (char **arg_p) | |
9928 | { | |
9929 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9930 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9931 | struct cleanup *old_chain; |
9932 | char *p = &(*arg_p)[3]; | |
9933 | char *endp; | |
9934 | char *marker_str; | |
9935 | int i; | |
9936 | ||
e9cafbcc | 9937 | p = skip_spaces (p); |
0fb4aa4b | 9938 | |
e9cafbcc | 9939 | endp = skip_to_space (p); |
0fb4aa4b PA |
9940 | |
9941 | marker_str = savestring (p, endp - p); | |
9942 | old_chain = make_cleanup (xfree, marker_str); | |
9943 | ||
9944 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9945 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9946 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9947 | ||
9948 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9949 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9950 | ||
9951 | for (i = 0; i < sals.nelts; i++) | |
9952 | { | |
9953 | struct static_tracepoint_marker *marker; | |
9954 | ||
9955 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9956 | ||
9957 | init_sal (&sals.sals[i]); | |
9958 | ||
9959 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9960 | sals.sals[i].pc = marker->address; | |
9961 | ||
9962 | release_static_tracepoint_marker (marker); | |
9963 | } | |
9964 | ||
9965 | do_cleanups (old_chain); | |
9966 | ||
9967 | *arg_p = endp; | |
9968 | return sals; | |
9969 | } | |
9970 | ||
fd9b8c24 PA |
9971 | /* Set a breakpoint. This function is shared between CLI and MI |
9972 | functions for setting a breakpoint. This function has two major | |
f6de8ec2 PA |
9973 | modes of operations, selected by the PARSE_ARG parameter. If |
9974 | non-zero, the function will parse ARG, extracting location, | |
9975 | condition, thread and extra string. Otherwise, ARG is just the | |
9976 | breakpoint's location, with condition, thread, and extra string | |
9977 | specified by the COND_STRING, THREAD and EXTRA_STRING parameters. | |
9978 | If INTERNAL is non-zero, the breakpoint number will be allocated | |
9979 | from the internal breakpoint count. Returns true if any breakpoint | |
9980 | was created; false otherwise. */ | |
0101ce28 | 9981 | |
8cdf0e15 VP |
9982 | int |
9983 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9984 | char *arg, char *cond_string, |
9985 | int thread, char *extra_string, | |
f6de8ec2 | 9986 | int parse_arg, |
0fb4aa4b | 9987 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9988 | int ignore_count, |
9989 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9990 | const struct breakpoint_ops *ops, |
44f238bb PA |
9991 | int from_tty, int enabled, int internal, |
9992 | unsigned flags) | |
c3f6f71d | 9993 | { |
b78a6381 | 9994 | volatile struct gdb_exception e; |
f8eba3c6 | 9995 | char *copy_arg = NULL; |
c3f6f71d | 9996 | char *addr_start = arg; |
7efd8fc2 | 9997 | struct linespec_result canonical; |
c3f6f71d | 9998 | struct cleanup *old_chain; |
80c99de1 | 9999 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 10000 | int pending = 0; |
4a306c9a | 10001 | int task = 0; |
86b17b60 | 10002 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 10003 | |
348d480f PA |
10004 | gdb_assert (ops != NULL); |
10005 | ||
7efd8fc2 | 10006 | init_linespec_result (&canonical); |
c3f6f71d | 10007 | |
b78a6381 TT |
10008 | TRY_CATCH (e, RETURN_MASK_ALL) |
10009 | { | |
983af33b SDJ |
10010 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
10011 | addr_start, ©_arg); | |
b78a6381 | 10012 | } |
0101ce28 JJ |
10013 | |
10014 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 10015 | switch (e.reason) |
0101ce28 | 10016 | { |
983af33b SDJ |
10017 | case GDB_NO_ERROR: |
10018 | if (VEC_empty (linespec_sals, canonical.sals)) | |
10019 | return 0; | |
10020 | break; | |
05ff989b AC |
10021 | case RETURN_ERROR: |
10022 | switch (e.error) | |
0101ce28 | 10023 | { |
05ff989b | 10024 | case NOT_FOUND_ERROR: |
0101ce28 | 10025 | |
05ff989b AC |
10026 | /* If pending breakpoint support is turned off, throw |
10027 | error. */ | |
fa8d40ab JJ |
10028 | |
10029 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
10030 | throw_exception (e); |
10031 | ||
10032 | exception_print (gdb_stderr, e); | |
fa8d40ab | 10033 | |
05ff989b AC |
10034 | /* If pending breakpoint support is auto query and the user |
10035 | selects no, then simply return the error code. */ | |
059fb39f | 10036 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
10037 | && !nquery (_("Make %s pending on future shared library load? "), |
10038 | bptype_string (type_wanted))) | |
fd9b8c24 | 10039 | return 0; |
fa8d40ab | 10040 | |
05ff989b AC |
10041 | /* At this point, either the user was queried about setting |
10042 | a pending breakpoint and selected yes, or pending | |
10043 | breakpoint behavior is on and thus a pending breakpoint | |
10044 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
10045 | { |
10046 | struct linespec_sals lsal; | |
10047 | ||
10048 | copy_arg = xstrdup (addr_start); | |
10049 | lsal.canonical = xstrdup (copy_arg); | |
10050 | lsal.sals.nelts = 1; | |
10051 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
10052 | init_sal (&lsal.sals.sals[0]); | |
10053 | pending = 1; | |
10054 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
10055 | } | |
05ff989b AC |
10056 | break; |
10057 | default: | |
98deb0da | 10058 | throw_exception (e); |
0101ce28 | 10059 | } |
2abae994 | 10060 | break; |
05ff989b | 10061 | default: |
983af33b | 10062 | throw_exception (e); |
0101ce28 | 10063 | } |
c3f6f71d | 10064 | |
4a64f543 | 10065 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 10066 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 10067 | |
c3f6f71d JM |
10068 | /* ----------------------------- SNIP ----------------------------- |
10069 | Anything added to the cleanup chain beyond this point is assumed | |
10070 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
10071 | then the memory is not reclaimed. */ |
10072 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 10073 | |
c3f6f71d JM |
10074 | /* Resolve all line numbers to PC's and verify that the addresses |
10075 | are ok for the target. */ | |
0101ce28 | 10076 | if (!pending) |
f8eba3c6 TT |
10077 | { |
10078 | int ix; | |
10079 | struct linespec_sals *iter; | |
10080 | ||
10081 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
10082 | breakpoint_sals_to_pc (&iter->sals); | |
10083 | } | |
c3f6f71d | 10084 | |
7a697b8d | 10085 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 10086 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
10087 | { |
10088 | int ix; | |
10089 | struct linespec_sals *iter; | |
10090 | ||
10091 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
10092 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
10093 | } | |
7a697b8d | 10094 | |
c3f6f71d JM |
10095 | /* Verify that condition can be parsed, before setting any |
10096 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 10097 | breakpoint. */ |
0101ce28 | 10098 | if (!pending) |
c3f6f71d | 10099 | { |
f6de8ec2 | 10100 | if (parse_arg) |
72b2ff0e | 10101 | { |
0878d0fa | 10102 | char *rest; |
52d361e1 YQ |
10103 | struct linespec_sals *lsal; |
10104 | ||
10105 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
10106 | ||
0878d0fa YQ |
10107 | /* Here we only parse 'arg' to separate condition |
10108 | from thread number, so parsing in context of first | |
10109 | sal is OK. When setting the breakpoint we'll | |
10110 | re-parse it in context of each sal. */ | |
10111 | ||
10112 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, | |
10113 | &thread, &task, &rest); | |
10114 | if (cond_string) | |
10115 | make_cleanup (xfree, cond_string); | |
10116 | if (rest) | |
10117 | make_cleanup (xfree, rest); | |
10118 | if (rest) | |
10119 | extra_string = rest; | |
72b2ff0e | 10120 | } |
2f069f6f | 10121 | else |
72b2ff0e | 10122 | { |
0878d0fa YQ |
10123 | if (*arg != '\0') |
10124 | error (_("Garbage '%s' at end of location"), arg); | |
10125 | ||
10126 | /* Create a private copy of condition string. */ | |
10127 | if (cond_string) | |
10128 | { | |
10129 | cond_string = xstrdup (cond_string); | |
10130 | make_cleanup (xfree, cond_string); | |
10131 | } | |
10132 | /* Create a private copy of any extra string. */ | |
10133 | if (extra_string) | |
10134 | { | |
10135 | extra_string = xstrdup (extra_string); | |
10136 | make_cleanup (xfree, extra_string); | |
10137 | } | |
72b2ff0e | 10138 | } |
0fb4aa4b | 10139 | |
52d361e1 | 10140 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e7e0cddf | 10141 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
10142 | tempflag ? disp_del : disp_donttouch, |
10143 | thread, task, ignore_count, ops, | |
44f238bb | 10144 | from_tty, enabled, internal, flags); |
c906108c | 10145 | } |
0101ce28 JJ |
10146 | else |
10147 | { | |
0101ce28 JJ |
10148 | struct breakpoint *b; |
10149 | ||
0101ce28 JJ |
10150 | make_cleanup (xfree, copy_arg); |
10151 | ||
bfccc43c YQ |
10152 | if (is_tracepoint_type (type_wanted)) |
10153 | { | |
10154 | struct tracepoint *t; | |
10155 | ||
10156 | t = XCNEW (struct tracepoint); | |
10157 | b = &t->base; | |
10158 | } | |
10159 | else | |
10160 | b = XNEW (struct breakpoint); | |
10161 | ||
10162 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
10163 | ||
f8eba3c6 | 10164 | b->addr_string = copy_arg; |
f6de8ec2 | 10165 | if (parse_arg) |
e12c7713 MK |
10166 | b->cond_string = NULL; |
10167 | else | |
10168 | { | |
10169 | /* Create a private copy of condition string. */ | |
10170 | if (cond_string) | |
10171 | { | |
10172 | cond_string = xstrdup (cond_string); | |
10173 | make_cleanup (xfree, cond_string); | |
10174 | } | |
10175 | b->cond_string = cond_string; | |
10176 | } | |
e7e0cddf | 10177 | b->extra_string = NULL; |
0101ce28 | 10178 | b->ignore_count = ignore_count; |
0101ce28 | 10179 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 10180 | b->condition_not_parsed = 1; |
41447f92 | 10181 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
10182 | if ((type_wanted != bp_breakpoint |
10183 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 10184 | b->pspace = current_program_space; |
8bea4e01 | 10185 | |
bfccc43c | 10186 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
10187 | } |
10188 | ||
f8eba3c6 | 10189 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 10190 | { |
3e43a32a MS |
10191 | warning (_("Multiple breakpoints were set.\nUse the " |
10192 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 10193 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
10194 | } |
10195 | ||
80c99de1 PA |
10196 | /* That's it. Discard the cleanups for data inserted into the |
10197 | breakpoint. */ | |
10198 | discard_cleanups (bkpt_chain); | |
10199 | /* But cleanup everything else. */ | |
c3f6f71d | 10200 | do_cleanups (old_chain); |
217dc9e2 | 10201 | |
80c99de1 | 10202 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
44702360 | 10203 | update_global_location_list (UGLL_MAY_INSERT); |
fd9b8c24 PA |
10204 | |
10205 | return 1; | |
c3f6f71d | 10206 | } |
c906108c | 10207 | |
348d480f | 10208 | /* Set a breakpoint. |
72b2ff0e VP |
10209 | ARG is a string describing breakpoint address, |
10210 | condition, and thread. | |
10211 | FLAG specifies if a breakpoint is hardware on, | |
10212 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
10213 | and BP_TEMPFLAG. */ | |
348d480f | 10214 | |
98deb0da | 10215 | static void |
72b2ff0e | 10216 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 10217 | { |
72b2ff0e | 10218 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
10219 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
10220 | ? bp_hardware_breakpoint | |
10221 | : bp_breakpoint); | |
55aa24fb SDJ |
10222 | struct breakpoint_ops *ops; |
10223 | const char *arg_cp = arg; | |
10224 | ||
10225 | /* Matching breakpoints on probes. */ | |
10226 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
10227 | ops = &bkpt_probe_breakpoint_ops; | |
10228 | else | |
10229 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 10230 | |
8cdf0e15 VP |
10231 | create_breakpoint (get_current_arch (), |
10232 | arg, | |
e7e0cddf | 10233 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 10234 | tempflag, type_wanted, |
8cdf0e15 VP |
10235 | 0 /* Ignore count */, |
10236 | pending_break_support, | |
55aa24fb | 10237 | ops, |
8cdf0e15 | 10238 | from_tty, |
84f4c1fe | 10239 | 1 /* enabled */, |
44f238bb PA |
10240 | 0 /* internal */, |
10241 | 0); | |
c906108c SS |
10242 | } |
10243 | ||
c906108c SS |
10244 | /* Helper function for break_command_1 and disassemble_command. */ |
10245 | ||
10246 | void | |
fba45db2 | 10247 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
10248 | { |
10249 | CORE_ADDR pc; | |
10250 | ||
10251 | if (sal->pc == 0 && sal->symtab != NULL) | |
10252 | { | |
10253 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 10254 | error (_("No line %d in file \"%s\"."), |
05cba821 | 10255 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 10256 | sal->pc = pc; |
6a048695 | 10257 | |
4a64f543 MS |
10258 | /* If this SAL corresponds to a breakpoint inserted using a line |
10259 | number, then skip the function prologue if necessary. */ | |
6a048695 | 10260 | if (sal->explicit_line) |
059acae7 | 10261 | skip_prologue_sal (sal); |
c906108c SS |
10262 | } |
10263 | ||
10264 | if (sal->section == 0 && sal->symtab != NULL) | |
10265 | { | |
346d1dfe | 10266 | const struct blockvector *bv; |
3977b71f | 10267 | const struct block *b; |
c5aa993b | 10268 | struct symbol *sym; |
c906108c | 10269 | |
801e3a5b | 10270 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
10271 | if (bv != NULL) |
10272 | { | |
7f0df278 | 10273 | sym = block_linkage_function (b); |
c906108c SS |
10274 | if (sym != NULL) |
10275 | { | |
10276 | fixup_symbol_section (sym, sal->symtab->objfile); | |
e27d198c | 10277 | sal->section = SYMBOL_OBJ_SECTION (sal->symtab->objfile, sym); |
c906108c SS |
10278 | } |
10279 | else | |
10280 | { | |
4a64f543 MS |
10281 | /* It really is worthwhile to have the section, so we'll |
10282 | just have to look harder. This case can be executed | |
10283 | if we have line numbers but no functions (as can | |
10284 | happen in assembly source). */ | |
c906108c | 10285 | |
7cbd4a93 | 10286 | struct bound_minimal_symbol msym; |
6c95b8df PA |
10287 | struct cleanup *old_chain = save_current_space_and_thread (); |
10288 | ||
10289 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
10290 | |
10291 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7cbd4a93 | 10292 | if (msym.minsym) |
efd66ac6 | 10293 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
6c95b8df PA |
10294 | |
10295 | do_cleanups (old_chain); | |
c906108c SS |
10296 | } |
10297 | } | |
10298 | } | |
10299 | } | |
10300 | ||
10301 | void | |
fba45db2 | 10302 | break_command (char *arg, int from_tty) |
c906108c | 10303 | { |
db107f19 | 10304 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10305 | } |
10306 | ||
c906108c | 10307 | void |
fba45db2 | 10308 | tbreak_command (char *arg, int from_tty) |
c906108c | 10309 | { |
db107f19 | 10310 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
10311 | } |
10312 | ||
c906108c | 10313 | static void |
fba45db2 | 10314 | hbreak_command (char *arg, int from_tty) |
c906108c | 10315 | { |
db107f19 | 10316 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
10317 | } |
10318 | ||
10319 | static void | |
fba45db2 | 10320 | thbreak_command (char *arg, int from_tty) |
c906108c | 10321 | { |
db107f19 | 10322 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
10323 | } |
10324 | ||
10325 | static void | |
fba45db2 | 10326 | stop_command (char *arg, int from_tty) |
c906108c | 10327 | { |
a3f17187 | 10328 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 10329 | Usage: stop in <function | address>\n\ |
a3f17187 | 10330 | stop at <line>\n")); |
c906108c SS |
10331 | } |
10332 | ||
10333 | static void | |
fba45db2 | 10334 | stopin_command (char *arg, int from_tty) |
c906108c SS |
10335 | { |
10336 | int badInput = 0; | |
10337 | ||
c5aa993b | 10338 | if (arg == (char *) NULL) |
c906108c SS |
10339 | badInput = 1; |
10340 | else if (*arg != '*') | |
10341 | { | |
10342 | char *argptr = arg; | |
10343 | int hasColon = 0; | |
10344 | ||
4a64f543 | 10345 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 10346 | say it is bad, otherwise, it should be an address or |
4a64f543 | 10347 | function/method name. */ |
c906108c | 10348 | while (*argptr && !hasColon) |
c5aa993b JM |
10349 | { |
10350 | hasColon = (*argptr == ':'); | |
10351 | argptr++; | |
10352 | } | |
c906108c SS |
10353 | |
10354 | if (hasColon) | |
c5aa993b | 10355 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 10356 | else |
c5aa993b | 10357 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
10358 | } |
10359 | ||
10360 | if (badInput) | |
a3f17187 | 10361 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 10362 | else |
db107f19 | 10363 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10364 | } |
10365 | ||
10366 | static void | |
fba45db2 | 10367 | stopat_command (char *arg, int from_tty) |
c906108c SS |
10368 | { |
10369 | int badInput = 0; | |
10370 | ||
c5aa993b | 10371 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
10372 | badInput = 1; |
10373 | else | |
10374 | { | |
10375 | char *argptr = arg; | |
10376 | int hasColon = 0; | |
10377 | ||
4a64f543 MS |
10378 | /* Look for a ':'. If there is a '::' then get out, otherwise |
10379 | it is probably a line number. */ | |
c906108c | 10380 | while (*argptr && !hasColon) |
c5aa993b JM |
10381 | { |
10382 | hasColon = (*argptr == ':'); | |
10383 | argptr++; | |
10384 | } | |
c906108c SS |
10385 | |
10386 | if (hasColon) | |
c5aa993b | 10387 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 10388 | else |
c5aa993b | 10389 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
10390 | } |
10391 | ||
10392 | if (badInput) | |
a3f17187 | 10393 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 10394 | else |
db107f19 | 10395 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10396 | } |
10397 | ||
e7e0cddf SS |
10398 | /* The dynamic printf command is mostly like a regular breakpoint, but |
10399 | with a prewired command list consisting of a single output command, | |
10400 | built from extra arguments supplied on the dprintf command | |
10401 | line. */ | |
10402 | ||
da821c7b | 10403 | static void |
e7e0cddf SS |
10404 | dprintf_command (char *arg, int from_tty) |
10405 | { | |
10406 | create_breakpoint (get_current_arch (), | |
10407 | arg, | |
10408 | NULL, 0, NULL, 1 /* parse arg */, | |
10409 | 0, bp_dprintf, | |
10410 | 0 /* Ignore count */, | |
10411 | pending_break_support, | |
10412 | &dprintf_breakpoint_ops, | |
10413 | from_tty, | |
10414 | 1 /* enabled */, | |
10415 | 0 /* internal */, | |
10416 | 0); | |
10417 | } | |
10418 | ||
d3ce09f5 SS |
10419 | static void |
10420 | agent_printf_command (char *arg, int from_tty) | |
10421 | { | |
10422 | error (_("May only run agent-printf on the target")); | |
10423 | } | |
10424 | ||
f1310107 TJB |
10425 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
10426 | ranged breakpoints. */ | |
10427 | ||
10428 | static int | |
10429 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
10430 | struct address_space *aspace, | |
09ac7c10 TT |
10431 | CORE_ADDR bp_addr, |
10432 | const struct target_waitstatus *ws) | |
f1310107 | 10433 | { |
09ac7c10 | 10434 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 10435 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
10436 | return 0; |
10437 | ||
f1310107 TJB |
10438 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
10439 | bl->length, aspace, bp_addr); | |
10440 | } | |
10441 | ||
10442 | /* Implement the "resources_needed" breakpoint_ops method for | |
10443 | ranged breakpoints. */ | |
10444 | ||
10445 | static int | |
10446 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
10447 | { | |
10448 | return target_ranged_break_num_registers (); | |
10449 | } | |
10450 | ||
10451 | /* Implement the "print_it" breakpoint_ops method for | |
10452 | ranged breakpoints. */ | |
10453 | ||
10454 | static enum print_stop_action | |
348d480f | 10455 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 10456 | { |
348d480f | 10457 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 10458 | struct bp_location *bl = b->loc; |
79a45e25 | 10459 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10460 | |
10461 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10462 | ||
10463 | /* Ranged breakpoints have only one location. */ | |
10464 | gdb_assert (bl && bl->next == NULL); | |
10465 | ||
10466 | annotate_breakpoint (b->number); | |
10467 | if (b->disposition == disp_del) | |
10468 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
10469 | else | |
10470 | ui_out_text (uiout, "\nRanged breakpoint "); | |
10471 | if (ui_out_is_mi_like_p (uiout)) | |
10472 | { | |
10473 | ui_out_field_string (uiout, "reason", | |
10474 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
10475 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
10476 | } | |
10477 | ui_out_field_int (uiout, "bkptno", b->number); | |
10478 | ui_out_text (uiout, ", "); | |
10479 | ||
10480 | return PRINT_SRC_AND_LOC; | |
10481 | } | |
10482 | ||
10483 | /* Implement the "print_one" breakpoint_ops method for | |
10484 | ranged breakpoints. */ | |
10485 | ||
10486 | static void | |
10487 | print_one_ranged_breakpoint (struct breakpoint *b, | |
10488 | struct bp_location **last_loc) | |
10489 | { | |
10490 | struct bp_location *bl = b->loc; | |
10491 | struct value_print_options opts; | |
79a45e25 | 10492 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10493 | |
10494 | /* Ranged breakpoints have only one location. */ | |
10495 | gdb_assert (bl && bl->next == NULL); | |
10496 | ||
10497 | get_user_print_options (&opts); | |
10498 | ||
10499 | if (opts.addressprint) | |
10500 | /* We don't print the address range here, it will be printed later | |
10501 | by print_one_detail_ranged_breakpoint. */ | |
10502 | ui_out_field_skip (uiout, "addr"); | |
10503 | annotate_field (5); | |
10504 | print_breakpoint_location (b, bl); | |
10505 | *last_loc = bl; | |
10506 | } | |
10507 | ||
10508 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10509 | ranged breakpoints. */ | |
10510 | ||
10511 | static void | |
10512 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
10513 | struct ui_out *uiout) | |
10514 | { | |
10515 | CORE_ADDR address_start, address_end; | |
10516 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
10517 | struct ui_file *stb = mem_fileopen (); |
10518 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
10519 | |
10520 | gdb_assert (bl); | |
10521 | ||
10522 | address_start = bl->address; | |
10523 | address_end = address_start + bl->length - 1; | |
10524 | ||
10525 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 10526 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
10527 | print_core_address (bl->gdbarch, address_start), |
10528 | print_core_address (bl->gdbarch, address_end)); | |
10529 | ui_out_field_stream (uiout, "addr", stb); | |
10530 | ui_out_text (uiout, "\n"); | |
10531 | ||
10532 | do_cleanups (cleanup); | |
10533 | } | |
10534 | ||
10535 | /* Implement the "print_mention" breakpoint_ops method for | |
10536 | ranged breakpoints. */ | |
10537 | ||
10538 | static void | |
10539 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10540 | { | |
10541 | struct bp_location *bl = b->loc; | |
79a45e25 | 10542 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10543 | |
10544 | gdb_assert (bl); | |
10545 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10546 | ||
10547 | if (ui_out_is_mi_like_p (uiout)) | |
10548 | return; | |
10549 | ||
10550 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10551 | b->number, paddress (bl->gdbarch, bl->address), | |
10552 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10553 | } | |
10554 | ||
10555 | /* Implement the "print_recreate" breakpoint_ops method for | |
10556 | ranged breakpoints. */ | |
10557 | ||
10558 | static void | |
10559 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10560 | { | |
10561 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
10562 | b->addr_string_range_end); | |
d9b3f62e | 10563 | print_recreate_thread (b, fp); |
f1310107 TJB |
10564 | } |
10565 | ||
10566 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10567 | ||
2060206e | 10568 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10569 | |
10570 | /* Find the address where the end of the breakpoint range should be | |
10571 | placed, given the SAL of the end of the range. This is so that if | |
10572 | the user provides a line number, the end of the range is set to the | |
10573 | last instruction of the given line. */ | |
10574 | ||
10575 | static CORE_ADDR | |
10576 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10577 | { | |
10578 | CORE_ADDR end; | |
10579 | ||
10580 | /* If the user provided a PC value, use it. Otherwise, | |
10581 | find the address of the end of the given location. */ | |
10582 | if (sal.explicit_pc) | |
10583 | end = sal.pc; | |
10584 | else | |
10585 | { | |
10586 | int ret; | |
10587 | CORE_ADDR start; | |
10588 | ||
10589 | ret = find_line_pc_range (sal, &start, &end); | |
10590 | if (!ret) | |
10591 | error (_("Could not find location of the end of the range.")); | |
10592 | ||
10593 | /* find_line_pc_range returns the start of the next line. */ | |
10594 | end--; | |
10595 | } | |
10596 | ||
10597 | return end; | |
10598 | } | |
10599 | ||
10600 | /* Implement the "break-range" CLI command. */ | |
10601 | ||
10602 | static void | |
10603 | break_range_command (char *arg, int from_tty) | |
10604 | { | |
10605 | char *arg_start, *addr_string_start, *addr_string_end; | |
10606 | struct linespec_result canonical_start, canonical_end; | |
10607 | int bp_count, can_use_bp, length; | |
10608 | CORE_ADDR end; | |
10609 | struct breakpoint *b; | |
10610 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10611 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10612 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
10613 | |
10614 | /* We don't support software ranged breakpoints. */ | |
10615 | if (target_ranged_break_num_registers () < 0) | |
10616 | error (_("This target does not support hardware ranged breakpoints.")); | |
10617 | ||
10618 | bp_count = hw_breakpoint_used_count (); | |
10619 | bp_count += target_ranged_break_num_registers (); | |
10620 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10621 | bp_count, 0); | |
10622 | if (can_use_bp < 0) | |
10623 | error (_("Hardware breakpoints used exceeds limit.")); | |
10624 | ||
f8eba3c6 | 10625 | arg = skip_spaces (arg); |
f1310107 TJB |
10626 | if (arg == NULL || arg[0] == '\0') |
10627 | error(_("No address range specified.")); | |
10628 | ||
f1310107 TJB |
10629 | init_linespec_result (&canonical_start); |
10630 | ||
f8eba3c6 TT |
10631 | arg_start = arg; |
10632 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 10633 | |
f8eba3c6 | 10634 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
10635 | |
10636 | if (arg[0] != ',') | |
10637 | error (_("Too few arguments.")); | |
f8eba3c6 | 10638 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10639 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10640 | |
10641 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10642 | ||
10643 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10644 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10645 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10646 | ||
f8eba3c6 TT |
10647 | sal_start = lsal_start->sals.sals[0]; |
10648 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10649 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10650 | |
10651 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10652 | arg = skip_spaces (arg); |
f1310107 TJB |
10653 | |
10654 | /* Parse the end location. */ | |
10655 | ||
f1310107 TJB |
10656 | init_linespec_result (&canonical_end); |
10657 | arg_start = arg; | |
10658 | ||
f8eba3c6 | 10659 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10660 | parse_breakpoint_sals because we need to specify the start location's |
10661 | symtab and line as the default symtab and line for the end of the | |
10662 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10663 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
10664 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
10665 | sal_start.symtab, sal_start.line, | |
10666 | &canonical_end, NULL, NULL); | |
10667 | ||
10668 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10669 | |
f8eba3c6 | 10670 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10671 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10672 | |
10673 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10674 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10675 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10676 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10677 | ||
f8eba3c6 TT |
10678 | sal_end = lsal_end->sals.sals[0]; |
10679 | addr_string_end = savestring (arg_start, arg - arg_start); | |
10680 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
10681 | |
10682 | end = find_breakpoint_range_end (sal_end); | |
10683 | if (sal_start.pc > end) | |
177b42fe | 10684 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10685 | |
10686 | length = end - sal_start.pc + 1; | |
10687 | if (length < 0) | |
10688 | /* Length overflowed. */ | |
10689 | error (_("Address range too large.")); | |
10690 | else if (length == 1) | |
10691 | { | |
10692 | /* This range is simple enough to be handled by | |
10693 | the `hbreak' command. */ | |
10694 | hbreak_command (addr_string_start, 1); | |
10695 | ||
10696 | do_cleanups (cleanup_bkpt); | |
10697 | ||
10698 | return; | |
10699 | } | |
10700 | ||
10701 | /* Now set up the breakpoint. */ | |
10702 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10703 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10704 | set_breakpoint_count (breakpoint_count + 1); |
10705 | b->number = breakpoint_count; | |
10706 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
10707 | b->addr_string = xstrdup (addr_string_start); |
10708 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
10709 | b->loc->length = length; |
10710 | ||
f8eba3c6 | 10711 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10712 | |
10713 | mention (b); | |
8d3788bd | 10714 | observer_notify_breakpoint_created (b); |
44702360 | 10715 | update_global_location_list (UGLL_MAY_INSERT); |
f1310107 TJB |
10716 | } |
10717 | ||
4a64f543 MS |
10718 | /* Return non-zero if EXP is verified as constant. Returned zero |
10719 | means EXP is variable. Also the constant detection may fail for | |
10720 | some constant expressions and in such case still falsely return | |
10721 | zero. */ | |
2e6e3d9c | 10722 | |
65d79d4b SDJ |
10723 | static int |
10724 | watchpoint_exp_is_const (const struct expression *exp) | |
10725 | { | |
10726 | int i = exp->nelts; | |
10727 | ||
10728 | while (i > 0) | |
10729 | { | |
10730 | int oplenp, argsp; | |
10731 | ||
10732 | /* We are only interested in the descriptor of each element. */ | |
10733 | operator_length (exp, i, &oplenp, &argsp); | |
10734 | i -= oplenp; | |
10735 | ||
10736 | switch (exp->elts[i].opcode) | |
10737 | { | |
10738 | case BINOP_ADD: | |
10739 | case BINOP_SUB: | |
10740 | case BINOP_MUL: | |
10741 | case BINOP_DIV: | |
10742 | case BINOP_REM: | |
10743 | case BINOP_MOD: | |
10744 | case BINOP_LSH: | |
10745 | case BINOP_RSH: | |
10746 | case BINOP_LOGICAL_AND: | |
10747 | case BINOP_LOGICAL_OR: | |
10748 | case BINOP_BITWISE_AND: | |
10749 | case BINOP_BITWISE_IOR: | |
10750 | case BINOP_BITWISE_XOR: | |
10751 | case BINOP_EQUAL: | |
10752 | case BINOP_NOTEQUAL: | |
10753 | case BINOP_LESS: | |
10754 | case BINOP_GTR: | |
10755 | case BINOP_LEQ: | |
10756 | case BINOP_GEQ: | |
10757 | case BINOP_REPEAT: | |
10758 | case BINOP_COMMA: | |
10759 | case BINOP_EXP: | |
10760 | case BINOP_MIN: | |
10761 | case BINOP_MAX: | |
10762 | case BINOP_INTDIV: | |
10763 | case BINOP_CONCAT: | |
65d79d4b SDJ |
10764 | case TERNOP_COND: |
10765 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10766 | |
10767 | case OP_LONG: | |
10768 | case OP_DOUBLE: | |
10769 | case OP_DECFLOAT: | |
10770 | case OP_LAST: | |
10771 | case OP_COMPLEX: | |
10772 | case OP_STRING: | |
65d79d4b SDJ |
10773 | case OP_ARRAY: |
10774 | case OP_TYPE: | |
608b4967 TT |
10775 | case OP_TYPEOF: |
10776 | case OP_DECLTYPE: | |
6e72ca20 | 10777 | case OP_TYPEID: |
65d79d4b SDJ |
10778 | case OP_NAME: |
10779 | case OP_OBJC_NSSTRING: | |
10780 | ||
10781 | case UNOP_NEG: | |
10782 | case UNOP_LOGICAL_NOT: | |
10783 | case UNOP_COMPLEMENT: | |
10784 | case UNOP_ADDR: | |
10785 | case UNOP_HIGH: | |
aeaa2474 | 10786 | case UNOP_CAST: |
9eaf6705 TT |
10787 | |
10788 | case UNOP_CAST_TYPE: | |
10789 | case UNOP_REINTERPRET_CAST: | |
10790 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10791 | /* Unary, binary and ternary operators: We have to check |
10792 | their operands. If they are constant, then so is the | |
10793 | result of that operation. For instance, if A and B are | |
10794 | determined to be constants, then so is "A + B". | |
10795 | ||
10796 | UNOP_IND is one exception to the rule above, because the | |
10797 | value of *ADDR is not necessarily a constant, even when | |
10798 | ADDR is. */ | |
65d79d4b SDJ |
10799 | break; |
10800 | ||
10801 | case OP_VAR_VALUE: | |
10802 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10803 | |
65d79d4b | 10804 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10805 | possible that a buggy compiler could mark a variable as |
10806 | constant even when it is not, and TYPE_CONST would return | |
10807 | true in this case, while SYMBOL_CLASS wouldn't. | |
10808 | ||
10809 | We also have to check for function symbols because they | |
10810 | are always constant. */ | |
65d79d4b SDJ |
10811 | { |
10812 | struct symbol *s = exp->elts[i + 2].symbol; | |
10813 | ||
10814 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10815 | && SYMBOL_CLASS (s) != LOC_CONST | |
10816 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10817 | return 0; | |
10818 | break; | |
10819 | } | |
10820 | ||
10821 | /* The default action is to return 0 because we are using | |
10822 | the optimistic approach here: If we don't know something, | |
10823 | then it is not a constant. */ | |
10824 | default: | |
10825 | return 0; | |
10826 | } | |
10827 | } | |
10828 | ||
10829 | return 1; | |
10830 | } | |
10831 | ||
3a5c3e22 PA |
10832 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10833 | ||
10834 | static void | |
10835 | dtor_watchpoint (struct breakpoint *self) | |
10836 | { | |
10837 | struct watchpoint *w = (struct watchpoint *) self; | |
10838 | ||
10839 | xfree (w->cond_exp); | |
10840 | xfree (w->exp); | |
10841 | xfree (w->exp_string); | |
10842 | xfree (w->exp_string_reparse); | |
10843 | value_free (w->val); | |
10844 | ||
10845 | base_breakpoint_ops.dtor (self); | |
10846 | } | |
10847 | ||
348d480f PA |
10848 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10849 | ||
10850 | static void | |
10851 | re_set_watchpoint (struct breakpoint *b) | |
10852 | { | |
3a5c3e22 PA |
10853 | struct watchpoint *w = (struct watchpoint *) b; |
10854 | ||
348d480f PA |
10855 | /* Watchpoint can be either on expression using entirely global |
10856 | variables, or it can be on local variables. | |
10857 | ||
10858 | Watchpoints of the first kind are never auto-deleted, and even | |
10859 | persist across program restarts. Since they can use variables | |
10860 | from shared libraries, we need to reparse expression as libraries | |
10861 | are loaded and unloaded. | |
10862 | ||
10863 | Watchpoints on local variables can also change meaning as result | |
10864 | of solib event. For example, if a watchpoint uses both a local | |
10865 | and a global variables in expression, it's a local watchpoint, | |
10866 | but unloading of a shared library will make the expression | |
10867 | invalid. This is not a very common use case, but we still | |
10868 | re-evaluate expression, to avoid surprises to the user. | |
10869 | ||
10870 | Note that for local watchpoints, we re-evaluate it only if | |
10871 | watchpoints frame id is still valid. If it's not, it means the | |
10872 | watchpoint is out of scope and will be deleted soon. In fact, | |
10873 | I'm not sure we'll ever be called in this case. | |
10874 | ||
10875 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10876 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10877 | |
3a5c3e22 PA |
10878 | Don't do anything about disabled watchpoints, since they will be |
10879 | reevaluated again when enabled. */ | |
10880 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10881 | } |
10882 | ||
77b06cd7 TJB |
10883 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10884 | ||
10885 | static int | |
10886 | insert_watchpoint (struct bp_location *bl) | |
10887 | { | |
3a5c3e22 PA |
10888 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10889 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10890 | |
10891 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10892 | w->cond_exp); |
77b06cd7 TJB |
10893 | } |
10894 | ||
10895 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10896 | ||
10897 | static int | |
10898 | remove_watchpoint (struct bp_location *bl) | |
10899 | { | |
3a5c3e22 PA |
10900 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10901 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10902 | |
10903 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10904 | w->cond_exp); |
e09342b5 TJB |
10905 | } |
10906 | ||
e09342b5 | 10907 | static int |
348d480f | 10908 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10909 | struct address_space *aspace, CORE_ADDR bp_addr, |
10910 | const struct target_waitstatus *ws) | |
e09342b5 | 10911 | { |
348d480f | 10912 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10913 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10914 | |
348d480f PA |
10915 | /* Continuable hardware watchpoints are treated as non-existent if the |
10916 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10917 | some data address). Otherwise gdb won't stop on a break instruction | |
10918 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10919 | been defined. Also skip watchpoints which we know did not trigger | |
10920 | (did not match the data address). */ | |
10921 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10922 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10923 | return 0; |
9c06b0b4 | 10924 | |
348d480f | 10925 | return 1; |
9c06b0b4 TJB |
10926 | } |
10927 | ||
348d480f PA |
10928 | static void |
10929 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10930 | { |
348d480f | 10931 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10932 | |
348d480f | 10933 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10934 | } |
10935 | ||
10936 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10937 | hardware watchpoints. */ |
9c06b0b4 TJB |
10938 | |
10939 | static int | |
348d480f | 10940 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10941 | { |
3a5c3e22 PA |
10942 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10943 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10944 | |
10945 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10946 | } |
10947 | ||
10948 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10949 | hardware watchpoints. */ |
9c06b0b4 TJB |
10950 | |
10951 | static int | |
348d480f | 10952 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10953 | { |
efa80663 PA |
10954 | /* Read and access watchpoints only work with hardware support. */ |
10955 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10956 | } |
10957 | ||
9c06b0b4 | 10958 | static enum print_stop_action |
348d480f | 10959 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10960 | { |
348d480f PA |
10961 | struct cleanup *old_chain; |
10962 | struct breakpoint *b; | |
f99d8bf4 | 10963 | struct ui_file *stb; |
348d480f | 10964 | enum print_stop_action result; |
3a5c3e22 | 10965 | struct watchpoint *w; |
79a45e25 | 10966 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10967 | |
10968 | gdb_assert (bs->bp_location_at != NULL); | |
10969 | ||
348d480f | 10970 | b = bs->breakpoint_at; |
3a5c3e22 | 10971 | w = (struct watchpoint *) b; |
348d480f | 10972 | |
f99d8bf4 PA |
10973 | stb = mem_fileopen (); |
10974 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10975 | |
10976 | switch (b->type) | |
10977 | { | |
348d480f | 10978 | case bp_watchpoint: |
9c06b0b4 TJB |
10979 | case bp_hardware_watchpoint: |
10980 | annotate_watchpoint (b->number); | |
10981 | if (ui_out_is_mi_like_p (uiout)) | |
10982 | ui_out_field_string | |
10983 | (uiout, "reason", | |
10984 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10985 | mention (b); |
10986 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10987 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10988 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10989 | ui_out_field_stream (uiout, "old", stb); |
10990 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10991 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10992 | ui_out_field_stream (uiout, "new", stb); |
10993 | ui_out_text (uiout, "\n"); | |
10994 | /* More than one watchpoint may have been triggered. */ | |
10995 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10996 | break; |
10997 | ||
10998 | case bp_read_watchpoint: | |
10999 | if (ui_out_is_mi_like_p (uiout)) | |
11000 | ui_out_field_string | |
11001 | (uiout, "reason", | |
11002 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
11003 | mention (b); |
11004 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
11005 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 11006 | watchpoint_value_print (w->val, stb); |
348d480f PA |
11007 | ui_out_field_stream (uiout, "value", stb); |
11008 | ui_out_text (uiout, "\n"); | |
11009 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
11010 | break; |
11011 | ||
11012 | case bp_access_watchpoint: | |
348d480f PA |
11013 | if (bs->old_val != NULL) |
11014 | { | |
11015 | annotate_watchpoint (b->number); | |
11016 | if (ui_out_is_mi_like_p (uiout)) | |
11017 | ui_out_field_string | |
11018 | (uiout, "reason", | |
11019 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
11020 | mention (b); | |
11021 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
11022 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 11023 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
11024 | ui_out_field_stream (uiout, "old", stb); |
11025 | ui_out_text (uiout, "\nNew value = "); | |
11026 | } | |
11027 | else | |
11028 | { | |
11029 | mention (b); | |
11030 | if (ui_out_is_mi_like_p (uiout)) | |
11031 | ui_out_field_string | |
11032 | (uiout, "reason", | |
11033 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
11034 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
11035 | ui_out_text (uiout, "\nValue = "); | |
11036 | } | |
f99d8bf4 | 11037 | watchpoint_value_print (w->val, stb); |
348d480f PA |
11038 | ui_out_field_stream (uiout, "new", stb); |
11039 | ui_out_text (uiout, "\n"); | |
11040 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
11041 | break; |
11042 | default: | |
348d480f | 11043 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
11044 | } |
11045 | ||
348d480f PA |
11046 | do_cleanups (old_chain); |
11047 | return result; | |
11048 | } | |
11049 | ||
11050 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
11051 | watchpoints. */ | |
11052 | ||
11053 | static void | |
11054 | print_mention_watchpoint (struct breakpoint *b) | |
11055 | { | |
11056 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 11057 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 11058 | struct ui_out *uiout = current_uiout; |
348d480f PA |
11059 | |
11060 | switch (b->type) | |
11061 | { | |
11062 | case bp_watchpoint: | |
11063 | ui_out_text (uiout, "Watchpoint "); | |
11064 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
11065 | break; | |
11066 | case bp_hardware_watchpoint: | |
11067 | ui_out_text (uiout, "Hardware watchpoint "); | |
11068 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
11069 | break; | |
11070 | case bp_read_watchpoint: | |
11071 | ui_out_text (uiout, "Hardware read watchpoint "); | |
11072 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
11073 | break; | |
11074 | case bp_access_watchpoint: | |
11075 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
11076 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
11077 | break; | |
11078 | default: | |
11079 | internal_error (__FILE__, __LINE__, | |
11080 | _("Invalid hardware watchpoint type.")); | |
11081 | } | |
11082 | ||
11083 | ui_out_field_int (uiout, "number", b->number); | |
11084 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 11085 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
11086 | do_cleanups (ui_out_chain); |
11087 | } | |
11088 | ||
11089 | /* Implement the "print_recreate" breakpoint_ops method for | |
11090 | watchpoints. */ | |
11091 | ||
11092 | static void | |
11093 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
11094 | { | |
3a5c3e22 PA |
11095 | struct watchpoint *w = (struct watchpoint *) b; |
11096 | ||
348d480f PA |
11097 | switch (b->type) |
11098 | { | |
11099 | case bp_watchpoint: | |
11100 | case bp_hardware_watchpoint: | |
11101 | fprintf_unfiltered (fp, "watch"); | |
11102 | break; | |
11103 | case bp_read_watchpoint: | |
11104 | fprintf_unfiltered (fp, "rwatch"); | |
11105 | break; | |
11106 | case bp_access_watchpoint: | |
11107 | fprintf_unfiltered (fp, "awatch"); | |
11108 | break; | |
11109 | default: | |
11110 | internal_error (__FILE__, __LINE__, | |
11111 | _("Invalid watchpoint type.")); | |
11112 | } | |
11113 | ||
3a5c3e22 | 11114 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 11115 | print_recreate_thread (b, fp); |
348d480f PA |
11116 | } |
11117 | ||
427cd150 TT |
11118 | /* Implement the "explains_signal" breakpoint_ops method for |
11119 | watchpoints. */ | |
11120 | ||
47591c29 | 11121 | static int |
427cd150 TT |
11122 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
11123 | { | |
11124 | /* A software watchpoint cannot cause a signal other than | |
11125 | GDB_SIGNAL_TRAP. */ | |
11126 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 11127 | return 0; |
427cd150 | 11128 | |
47591c29 | 11129 | return 1; |
427cd150 TT |
11130 | } |
11131 | ||
348d480f PA |
11132 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
11133 | ||
2060206e | 11134 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
11135 | |
11136 | /* Implement the "insert" breakpoint_ops method for | |
11137 | masked hardware watchpoints. */ | |
11138 | ||
11139 | static int | |
11140 | insert_masked_watchpoint (struct bp_location *bl) | |
11141 | { | |
3a5c3e22 PA |
11142 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
11143 | ||
11144 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
11145 | bl->watchpoint_type); |
11146 | } | |
11147 | ||
11148 | /* Implement the "remove" breakpoint_ops method for | |
11149 | masked hardware watchpoints. */ | |
11150 | ||
11151 | static int | |
11152 | remove_masked_watchpoint (struct bp_location *bl) | |
11153 | { | |
3a5c3e22 PA |
11154 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
11155 | ||
11156 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
11157 | bl->watchpoint_type); |
11158 | } | |
11159 | ||
11160 | /* Implement the "resources_needed" breakpoint_ops method for | |
11161 | masked hardware watchpoints. */ | |
11162 | ||
11163 | static int | |
11164 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
11165 | { | |
3a5c3e22 PA |
11166 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
11167 | ||
11168 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
11169 | } |
11170 | ||
11171 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
11172 | masked hardware watchpoints. */ | |
11173 | ||
11174 | static int | |
11175 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
11176 | { | |
11177 | return 0; | |
11178 | } | |
11179 | ||
11180 | /* Implement the "print_it" breakpoint_ops method for | |
11181 | masked hardware watchpoints. */ | |
11182 | ||
11183 | static enum print_stop_action | |
11184 | print_it_masked_watchpoint (bpstat bs) | |
11185 | { | |
11186 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 11187 | struct ui_out *uiout = current_uiout; |
348d480f PA |
11188 | |
11189 | /* Masked watchpoints have only one location. */ | |
11190 | gdb_assert (b->loc && b->loc->next == NULL); | |
11191 | ||
11192 | switch (b->type) | |
11193 | { | |
11194 | case bp_hardware_watchpoint: | |
11195 | annotate_watchpoint (b->number); | |
11196 | if (ui_out_is_mi_like_p (uiout)) | |
11197 | ui_out_field_string | |
11198 | (uiout, "reason", | |
11199 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
11200 | break; | |
11201 | ||
11202 | case bp_read_watchpoint: | |
11203 | if (ui_out_is_mi_like_p (uiout)) | |
11204 | ui_out_field_string | |
11205 | (uiout, "reason", | |
11206 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
11207 | break; | |
11208 | ||
11209 | case bp_access_watchpoint: | |
11210 | if (ui_out_is_mi_like_p (uiout)) | |
11211 | ui_out_field_string | |
11212 | (uiout, "reason", | |
11213 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
11214 | break; | |
11215 | default: | |
11216 | internal_error (__FILE__, __LINE__, | |
11217 | _("Invalid hardware watchpoint type.")); | |
11218 | } | |
11219 | ||
11220 | mention (b); | |
9c06b0b4 TJB |
11221 | ui_out_text (uiout, _("\n\ |
11222 | Check the underlying instruction at PC for the memory\n\ | |
11223 | address and value which triggered this watchpoint.\n")); | |
11224 | ui_out_text (uiout, "\n"); | |
11225 | ||
11226 | /* More than one watchpoint may have been triggered. */ | |
11227 | return PRINT_UNKNOWN; | |
11228 | } | |
11229 | ||
11230 | /* Implement the "print_one_detail" breakpoint_ops method for | |
11231 | masked hardware watchpoints. */ | |
11232 | ||
11233 | static void | |
11234 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
11235 | struct ui_out *uiout) | |
11236 | { | |
3a5c3e22 PA |
11237 | struct watchpoint *w = (struct watchpoint *) b; |
11238 | ||
9c06b0b4 TJB |
11239 | /* Masked watchpoints have only one location. */ |
11240 | gdb_assert (b->loc && b->loc->next == NULL); | |
11241 | ||
11242 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 11243 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
11244 | ui_out_text (uiout, "\n"); |
11245 | } | |
11246 | ||
11247 | /* Implement the "print_mention" breakpoint_ops method for | |
11248 | masked hardware watchpoints. */ | |
11249 | ||
11250 | static void | |
11251 | print_mention_masked_watchpoint (struct breakpoint *b) | |
11252 | { | |
3a5c3e22 | 11253 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 11254 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
11255 | struct cleanup *ui_out_chain; |
11256 | ||
11257 | switch (b->type) | |
11258 | { | |
11259 | case bp_hardware_watchpoint: | |
11260 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
11261 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
11262 | break; | |
11263 | case bp_read_watchpoint: | |
11264 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
11265 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
11266 | break; | |
11267 | case bp_access_watchpoint: | |
11268 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
11269 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
11270 | break; | |
11271 | default: | |
11272 | internal_error (__FILE__, __LINE__, | |
11273 | _("Invalid hardware watchpoint type.")); | |
11274 | } | |
11275 | ||
11276 | ui_out_field_int (uiout, "number", b->number); | |
11277 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 11278 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
11279 | do_cleanups (ui_out_chain); |
11280 | } | |
11281 | ||
11282 | /* Implement the "print_recreate" breakpoint_ops method for | |
11283 | masked hardware watchpoints. */ | |
11284 | ||
11285 | static void | |
11286 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
11287 | { | |
3a5c3e22 | 11288 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
11289 | char tmp[40]; |
11290 | ||
11291 | switch (b->type) | |
11292 | { | |
11293 | case bp_hardware_watchpoint: | |
11294 | fprintf_unfiltered (fp, "watch"); | |
11295 | break; | |
11296 | case bp_read_watchpoint: | |
11297 | fprintf_unfiltered (fp, "rwatch"); | |
11298 | break; | |
11299 | case bp_access_watchpoint: | |
11300 | fprintf_unfiltered (fp, "awatch"); | |
11301 | break; | |
11302 | default: | |
11303 | internal_error (__FILE__, __LINE__, | |
11304 | _("Invalid hardware watchpoint type.")); | |
11305 | } | |
11306 | ||
3a5c3e22 PA |
11307 | sprintf_vma (tmp, w->hw_wp_mask); |
11308 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 11309 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
11310 | } |
11311 | ||
11312 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
11313 | ||
2060206e | 11314 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
11315 | |
11316 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
11317 | ||
11318 | static int | |
11319 | is_masked_watchpoint (const struct breakpoint *b) | |
11320 | { | |
11321 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
11322 | } | |
11323 | ||
53a5351d JM |
11324 | /* accessflag: hw_write: watch write, |
11325 | hw_read: watch read, | |
11326 | hw_access: watch access (read or write) */ | |
c906108c | 11327 | static void |
bbc13ae3 | 11328 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 11329 | int just_location, int internal) |
c906108c | 11330 | { |
a9634178 | 11331 | volatile struct gdb_exception e; |
d983da9c | 11332 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 11333 | struct expression *exp; |
270140bd | 11334 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 11335 | struct value *val, *mark, *result; |
bb9d5f81 | 11336 | int saved_bitpos = 0, saved_bitsize = 0; |
c906108c | 11337 | struct frame_info *frame; |
bbc13ae3 KS |
11338 | const char *exp_start = NULL; |
11339 | const char *exp_end = NULL; | |
11340 | const char *tok, *end_tok; | |
9c06b0b4 | 11341 | int toklen = -1; |
bbc13ae3 KS |
11342 | const char *cond_start = NULL; |
11343 | const char *cond_end = NULL; | |
c906108c | 11344 | enum bptype bp_type; |
37e4754d | 11345 | int thread = -1; |
0cf6dd15 | 11346 | int pc = 0; |
9c06b0b4 TJB |
11347 | /* Flag to indicate whether we are going to use masks for |
11348 | the hardware watchpoint. */ | |
11349 | int use_mask = 0; | |
11350 | CORE_ADDR mask = 0; | |
3a5c3e22 | 11351 | struct watchpoint *w; |
bbc13ae3 KS |
11352 | char *expression; |
11353 | struct cleanup *back_to; | |
c906108c | 11354 | |
37e4754d LM |
11355 | /* Make sure that we actually have parameters to parse. */ |
11356 | if (arg != NULL && arg[0] != '\0') | |
11357 | { | |
bbc13ae3 KS |
11358 | const char *value_start; |
11359 | ||
11360 | exp_end = arg + strlen (arg); | |
37e4754d | 11361 | |
9c06b0b4 TJB |
11362 | /* Look for "parameter value" pairs at the end |
11363 | of the arguments string. */ | |
bbc13ae3 | 11364 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
11365 | { |
11366 | /* Skip whitespace at the end of the argument list. */ | |
11367 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11368 | tok--; | |
11369 | ||
11370 | /* Find the beginning of the last token. | |
11371 | This is the value of the parameter. */ | |
11372 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11373 | tok--; | |
11374 | value_start = tok + 1; | |
11375 | ||
11376 | /* Skip whitespace. */ | |
11377 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11378 | tok--; | |
11379 | ||
11380 | end_tok = tok; | |
11381 | ||
11382 | /* Find the beginning of the second to last token. | |
11383 | This is the parameter itself. */ | |
11384 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11385 | tok--; | |
11386 | tok++; | |
11387 | toklen = end_tok - tok + 1; | |
11388 | ||
11389 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
11390 | { | |
11391 | /* At this point we've found a "thread" token, which means | |
11392 | the user is trying to set a watchpoint that triggers | |
11393 | only in a specific thread. */ | |
11394 | char *endp; | |
37e4754d | 11395 | |
9c06b0b4 TJB |
11396 | if (thread != -1) |
11397 | error(_("You can specify only one thread.")); | |
37e4754d | 11398 | |
9c06b0b4 TJB |
11399 | /* Extract the thread ID from the next token. */ |
11400 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 11401 | |
9c06b0b4 TJB |
11402 | /* Check if the user provided a valid numeric value for the |
11403 | thread ID. */ | |
11404 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
11405 | error (_("Invalid thread ID specification %s."), value_start); | |
11406 | ||
11407 | /* Check if the thread actually exists. */ | |
11408 | if (!valid_thread_id (thread)) | |
af4908ba | 11409 | invalid_thread_id_error (thread); |
9c06b0b4 TJB |
11410 | } |
11411 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
11412 | { | |
11413 | /* We've found a "mask" token, which means the user wants to | |
11414 | create a hardware watchpoint that is going to have the mask | |
11415 | facility. */ | |
11416 | struct value *mask_value, *mark; | |
37e4754d | 11417 | |
9c06b0b4 TJB |
11418 | if (use_mask) |
11419 | error(_("You can specify only one mask.")); | |
37e4754d | 11420 | |
9c06b0b4 | 11421 | use_mask = just_location = 1; |
37e4754d | 11422 | |
9c06b0b4 TJB |
11423 | mark = value_mark (); |
11424 | mask_value = parse_to_comma_and_eval (&value_start); | |
11425 | mask = value_as_address (mask_value); | |
11426 | value_free_to_mark (mark); | |
11427 | } | |
11428 | else | |
11429 | /* We didn't recognize what we found. We should stop here. */ | |
11430 | break; | |
37e4754d | 11431 | |
9c06b0b4 TJB |
11432 | /* Truncate the string and get rid of the "parameter value" pair before |
11433 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 11434 | exp_end = tok; |
9c06b0b4 | 11435 | } |
37e4754d | 11436 | } |
bbc13ae3 KS |
11437 | else |
11438 | exp_end = arg; | |
37e4754d | 11439 | |
bbc13ae3 KS |
11440 | /* Parse the rest of the arguments. From here on out, everything |
11441 | is in terms of a newly allocated string instead of the original | |
11442 | ARG. */ | |
c906108c | 11443 | innermost_block = NULL; |
bbc13ae3 KS |
11444 | expression = savestring (arg, exp_end - arg); |
11445 | back_to = make_cleanup (xfree, expression); | |
11446 | exp_start = arg = expression; | |
1bb9788d | 11447 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 11448 | exp_end = arg; |
fa8a61dc TT |
11449 | /* Remove trailing whitespace from the expression before saving it. |
11450 | This makes the eventual display of the expression string a bit | |
11451 | prettier. */ | |
11452 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
11453 | --exp_end; | |
11454 | ||
65d79d4b SDJ |
11455 | /* Checking if the expression is not constant. */ |
11456 | if (watchpoint_exp_is_const (exp)) | |
11457 | { | |
11458 | int len; | |
11459 | ||
11460 | len = exp_end - exp_start; | |
11461 | while (len > 0 && isspace (exp_start[len - 1])) | |
11462 | len--; | |
11463 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
11464 | } | |
11465 | ||
c906108c SS |
11466 | exp_valid_block = innermost_block; |
11467 | mark = value_mark (); | |
3a1115a0 | 11468 | fetch_subexp_value (exp, &pc, &val, &result, NULL, just_location); |
06a64a0b | 11469 | |
bb9d5f81 PP |
11470 | if (val != NULL && just_location) |
11471 | { | |
11472 | saved_bitpos = value_bitpos (val); | |
11473 | saved_bitsize = value_bitsize (val); | |
11474 | } | |
11475 | ||
06a64a0b TT |
11476 | if (just_location) |
11477 | { | |
9c06b0b4 TJB |
11478 | int ret; |
11479 | ||
06a64a0b | 11480 | exp_valid_block = NULL; |
a1442452 | 11481 | val = value_addr (result); |
06a64a0b TT |
11482 | release_value (val); |
11483 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
11484 | |
11485 | if (use_mask) | |
11486 | { | |
11487 | ret = target_masked_watch_num_registers (value_as_address (val), | |
11488 | mask); | |
11489 | if (ret == -1) | |
11490 | error (_("This target does not support masked watchpoints.")); | |
11491 | else if (ret == -2) | |
11492 | error (_("Invalid mask or memory region.")); | |
11493 | } | |
06a64a0b TT |
11494 | } |
11495 | else if (val != NULL) | |
fa4727a6 | 11496 | release_value (val); |
c906108c | 11497 | |
bbc13ae3 KS |
11498 | tok = skip_spaces_const (arg); |
11499 | end_tok = skip_to_space_const (tok); | |
c906108c SS |
11500 | |
11501 | toklen = end_tok - tok; | |
11502 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
11503 | { | |
2d134ed3 PA |
11504 | struct expression *cond; |
11505 | ||
60e1c644 | 11506 | innermost_block = NULL; |
c906108c | 11507 | tok = cond_start = end_tok + 1; |
1bb9788d | 11508 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
11509 | |
11510 | /* The watchpoint expression may not be local, but the condition | |
11511 | may still be. E.g.: `watch global if local > 0'. */ | |
11512 | cond_exp_valid_block = innermost_block; | |
11513 | ||
2d134ed3 | 11514 | xfree (cond); |
c906108c SS |
11515 | cond_end = tok; |
11516 | } | |
11517 | if (*tok) | |
8a3fe4f8 | 11518 | error (_("Junk at end of command.")); |
c906108c | 11519 | |
d983da9c | 11520 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
11521 | |
11522 | /* If the expression is "local", then set up a "watchpoint scope" | |
11523 | breakpoint at the point where we've left the scope of the watchpoint | |
11524 | expression. Create the scope breakpoint before the watchpoint, so | |
11525 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 11526 | if (exp_valid_block && frame) |
d983da9c | 11527 | { |
edb3359d DJ |
11528 | if (frame_id_p (frame_unwind_caller_id (frame))) |
11529 | { | |
11530 | scope_breakpoint | |
a6d9a66e UW |
11531 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
11532 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
11533 | bp_watchpoint_scope, |
11534 | &momentary_breakpoint_ops); | |
d983da9c | 11535 | |
edb3359d | 11536 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 11537 | |
edb3359d DJ |
11538 | /* Automatically delete the breakpoint when it hits. */ |
11539 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 11540 | |
edb3359d DJ |
11541 | /* Only break in the proper frame (help with recursion). */ |
11542 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 11543 | |
edb3359d | 11544 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
11545 | scope_breakpoint->loc->gdbarch |
11546 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
11547 | scope_breakpoint->loc->requested_address |
11548 | = frame_unwind_caller_pc (frame); | |
11549 | scope_breakpoint->loc->address | |
a6d9a66e UW |
11550 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
11551 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11552 | scope_breakpoint->type); |
11553 | } | |
d983da9c DJ |
11554 | } |
11555 | ||
e8369a73 AB |
11556 | /* Now set up the breakpoint. We create all watchpoints as hardware |
11557 | watchpoints here even if hardware watchpoints are turned off, a call | |
11558 | to update_watchpoint later in this function will cause the type to | |
11559 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
11560 | ||
11561 | if (accessflag == hw_read) | |
11562 | bp_type = bp_read_watchpoint; | |
11563 | else if (accessflag == hw_access) | |
11564 | bp_type = bp_access_watchpoint; | |
11565 | else | |
11566 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 PA |
11567 | |
11568 | w = XCNEW (struct watchpoint); | |
11569 | b = &w->base; | |
348d480f | 11570 | if (use_mask) |
3a5c3e22 PA |
11571 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11572 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 11573 | else |
3a5c3e22 PA |
11574 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11575 | &watchpoint_breakpoint_ops); | |
37e4754d | 11576 | b->thread = thread; |
b5de0fa7 | 11577 | b->disposition = disp_donttouch; |
348d480f | 11578 | b->pspace = current_program_space; |
3a5c3e22 PA |
11579 | w->exp = exp; |
11580 | w->exp_valid_block = exp_valid_block; | |
11581 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11582 | if (just_location) |
11583 | { | |
11584 | struct type *t = value_type (val); | |
11585 | CORE_ADDR addr = value_as_address (val); | |
11586 | char *name; | |
11587 | ||
11588 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
11589 | name = type_to_string (t); | |
11590 | ||
3a5c3e22 | 11591 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 11592 | core_addr_to_string (addr)); |
06a64a0b TT |
11593 | xfree (name); |
11594 | ||
3a5c3e22 | 11595 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
11596 | (int) (exp_end - exp_start), exp_start); |
11597 | ||
06a64a0b TT |
11598 | /* The above expression is in C. */ |
11599 | b->language = language_c; | |
11600 | } | |
11601 | else | |
3a5c3e22 | 11602 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11603 | |
11604 | if (use_mask) | |
11605 | { | |
3a5c3e22 | 11606 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11607 | } |
11608 | else | |
11609 | { | |
3a5c3e22 | 11610 | w->val = val; |
bb9d5f81 PP |
11611 | w->val_bitpos = saved_bitpos; |
11612 | w->val_bitsize = saved_bitsize; | |
3a5c3e22 | 11613 | w->val_valid = 1; |
9c06b0b4 | 11614 | } |
77b06cd7 | 11615 | |
c906108c SS |
11616 | if (cond_start) |
11617 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11618 | else | |
11619 | b->cond_string = 0; | |
c5aa993b | 11620 | |
c906108c | 11621 | if (frame) |
f6bc2008 | 11622 | { |
3a5c3e22 PA |
11623 | w->watchpoint_frame = get_frame_id (frame); |
11624 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11625 | } |
c906108c | 11626 | else |
f6bc2008 | 11627 | { |
3a5c3e22 PA |
11628 | w->watchpoint_frame = null_frame_id; |
11629 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11630 | } |
c906108c | 11631 | |
d983da9c | 11632 | if (scope_breakpoint != NULL) |
c906108c | 11633 | { |
d983da9c DJ |
11634 | /* The scope breakpoint is related to the watchpoint. We will |
11635 | need to act on them together. */ | |
11636 | b->related_breakpoint = scope_breakpoint; | |
11637 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11638 | } |
d983da9c | 11639 | |
06a64a0b TT |
11640 | if (!just_location) |
11641 | value_free_to_mark (mark); | |
2d134ed3 | 11642 | |
a9634178 TJB |
11643 | TRY_CATCH (e, RETURN_MASK_ALL) |
11644 | { | |
11645 | /* Finally update the new watchpoint. This creates the locations | |
11646 | that should be inserted. */ | |
3a5c3e22 | 11647 | update_watchpoint (w, 1); |
a9634178 TJB |
11648 | } |
11649 | if (e.reason < 0) | |
11650 | { | |
11651 | delete_breakpoint (b); | |
11652 | throw_exception (e); | |
11653 | } | |
11654 | ||
3ea46bff | 11655 | install_breakpoint (internal, b, 1); |
bbc13ae3 | 11656 | do_cleanups (back_to); |
c906108c SS |
11657 | } |
11658 | ||
e09342b5 | 11659 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11660 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11661 | |
c906108c | 11662 | static int |
a9634178 | 11663 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11664 | { |
11665 | int found_memory_cnt = 0; | |
2e70b7b9 | 11666 | struct value *head = v; |
c906108c SS |
11667 | |
11668 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11669 | if (!can_use_hw_watchpoints) |
c906108c | 11670 | return 0; |
c5aa993b | 11671 | |
5c44784c JM |
11672 | /* Make sure that the value of the expression depends only upon |
11673 | memory contents, and values computed from them within GDB. If we | |
11674 | find any register references or function calls, we can't use a | |
11675 | hardware watchpoint. | |
11676 | ||
11677 | The idea here is that evaluating an expression generates a series | |
11678 | of values, one holding the value of every subexpression. (The | |
11679 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11680 | a*b+c.) GDB's values hold almost enough information to establish | |
11681 | the criteria given above --- they identify memory lvalues, | |
11682 | register lvalues, computed values, etcetera. So we can evaluate | |
11683 | the expression, and then scan the chain of values that leaves | |
11684 | behind to decide whether we can detect any possible change to the | |
11685 | expression's final value using only hardware watchpoints. | |
11686 | ||
11687 | However, I don't think that the values returned by inferior | |
11688 | function calls are special in any way. So this function may not | |
11689 | notice that an expression involving an inferior function call | |
11690 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11691 | for (; v; v = value_next (v)) |
c906108c | 11692 | { |
5c44784c | 11693 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11694 | { |
8464be76 DJ |
11695 | if (v != head && value_lazy (v)) |
11696 | /* A lazy memory lvalue in the chain is one that GDB never | |
11697 | needed to fetch; we either just used its address (e.g., | |
11698 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11699 | in `a,b'). This doesn't apply to HEAD; if that is | |
11700 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11701 | ; |
53a5351d | 11702 | else |
5c44784c JM |
11703 | { |
11704 | /* Ahh, memory we actually used! Check if we can cover | |
11705 | it with hardware watchpoints. */ | |
df407dfe | 11706 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11707 | |
11708 | /* We only watch structs and arrays if user asked for it | |
11709 | explicitly, never if they just happen to appear in a | |
11710 | middle of some value chain. */ | |
11711 | if (v == head | |
11712 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11713 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11714 | { | |
42ae5230 | 11715 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11716 | int len; |
11717 | int num_regs; | |
11718 | ||
a9634178 | 11719 | len = (target_exact_watchpoints |
e09342b5 TJB |
11720 | && is_scalar_type_recursive (vtype))? |
11721 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11722 | |
e09342b5 TJB |
11723 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11724 | if (!num_regs) | |
2e70b7b9 MS |
11725 | return 0; |
11726 | else | |
e09342b5 | 11727 | found_memory_cnt += num_regs; |
2e70b7b9 | 11728 | } |
5c44784c | 11729 | } |
c5aa993b | 11730 | } |
5086187c AC |
11731 | else if (VALUE_LVAL (v) != not_lval |
11732 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11733 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11734 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11735 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11736 | } |
11737 | ||
11738 | /* The expression itself looks suitable for using a hardware | |
11739 | watchpoint, but give the target machine a chance to reject it. */ | |
11740 | return found_memory_cnt; | |
11741 | } | |
11742 | ||
8b93c638 | 11743 | void |
84f4c1fe | 11744 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11745 | { |
84f4c1fe | 11746 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11747 | } |
11748 | ||
06a64a0b TT |
11749 | /* A helper function that looks for the "-location" argument and then |
11750 | calls watch_command_1. */ | |
11751 | ||
11752 | static void | |
11753 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11754 | { | |
11755 | int just_location = 0; | |
11756 | ||
11757 | if (arg | |
11758 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11759 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11760 | { | |
e9cafbcc | 11761 | arg = skip_spaces (arg); |
06a64a0b TT |
11762 | just_location = 1; |
11763 | } | |
11764 | ||
84f4c1fe | 11765 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11766 | } |
8926118c | 11767 | |
c5aa993b | 11768 | static void |
fba45db2 | 11769 | watch_command (char *arg, int from_tty) |
c906108c | 11770 | { |
06a64a0b | 11771 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11772 | } |
11773 | ||
8b93c638 | 11774 | void |
84f4c1fe | 11775 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11776 | { |
84f4c1fe | 11777 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11778 | } |
8926118c | 11779 | |
c5aa993b | 11780 | static void |
fba45db2 | 11781 | rwatch_command (char *arg, int from_tty) |
c906108c | 11782 | { |
06a64a0b | 11783 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11784 | } |
11785 | ||
8b93c638 | 11786 | void |
84f4c1fe | 11787 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11788 | { |
84f4c1fe | 11789 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11790 | } |
8926118c | 11791 | |
c5aa993b | 11792 | static void |
fba45db2 | 11793 | awatch_command (char *arg, int from_tty) |
c906108c | 11794 | { |
06a64a0b | 11795 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11796 | } |
c906108c | 11797 | \f |
c5aa993b | 11798 | |
43ff13b4 | 11799 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11800 | because it uses the mechanisms of breakpoints. */ |
11801 | ||
bfec99b2 PA |
11802 | struct until_break_command_continuation_args |
11803 | { | |
11804 | struct breakpoint *breakpoint; | |
11805 | struct breakpoint *breakpoint2; | |
186c406b | 11806 | int thread_num; |
bfec99b2 PA |
11807 | }; |
11808 | ||
43ff13b4 | 11809 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11810 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11811 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11812 | command. */ |
c2c6d25f | 11813 | static void |
fa4cd53f | 11814 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11815 | { |
bfec99b2 PA |
11816 | struct until_break_command_continuation_args *a = arg; |
11817 | ||
11818 | delete_breakpoint (a->breakpoint); | |
11819 | if (a->breakpoint2) | |
11820 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11821 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11822 | } |
11823 | ||
c906108c | 11824 | void |
ae66c1fc | 11825 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11826 | { |
11827 | struct symtabs_and_lines sals; | |
11828 | struct symtab_and_line sal; | |
8556afb4 PA |
11829 | struct frame_info *frame; |
11830 | struct gdbarch *frame_gdbarch; | |
11831 | struct frame_id stack_frame_id; | |
11832 | struct frame_id caller_frame_id; | |
c906108c | 11833 | struct breakpoint *breakpoint; |
f107f563 | 11834 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 11835 | struct cleanup *old_chain; |
186c406b TT |
11836 | int thread; |
11837 | struct thread_info *tp; | |
c906108c | 11838 | |
70509625 | 11839 | clear_proceed_status (0); |
c906108c SS |
11840 | |
11841 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11842 | this function. */ |
c5aa993b | 11843 | |
1bfeeb0f | 11844 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 11845 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11846 | get_last_displayed_symtab (), |
f8eba3c6 | 11847 | get_last_displayed_line ()); |
c906108c | 11848 | else |
f8eba3c6 TT |
11849 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
11850 | (struct symtab *) NULL, 0); | |
c5aa993b | 11851 | |
c906108c | 11852 | if (sals.nelts != 1) |
8a3fe4f8 | 11853 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11854 | |
c906108c | 11855 | sal = sals.sals[0]; |
4a64f543 | 11856 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11857 | |
c906108c | 11858 | if (*arg) |
8a3fe4f8 | 11859 | error (_("Junk at end of arguments.")); |
c5aa993b | 11860 | |
c906108c | 11861 | resolve_sal_pc (&sal); |
c5aa993b | 11862 | |
186c406b TT |
11863 | tp = inferior_thread (); |
11864 | thread = tp->num; | |
11865 | ||
883bc8d1 PA |
11866 | old_chain = make_cleanup (null_cleanup, NULL); |
11867 | ||
8556afb4 PA |
11868 | /* Note linespec handling above invalidates the frame chain. |
11869 | Installing a breakpoint also invalidates the frame chain (as it | |
11870 | may need to switch threads), so do any frame handling before | |
11871 | that. */ | |
11872 | ||
11873 | frame = get_selected_frame (NULL); | |
11874 | frame_gdbarch = get_frame_arch (frame); | |
11875 | stack_frame_id = get_stack_frame_id (frame); | |
11876 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11877 | |
ae66c1fc EZ |
11878 | /* Keep within the current frame, or in frames called by the current |
11879 | one. */ | |
edb3359d | 11880 | |
883bc8d1 | 11881 | if (frame_id_p (caller_frame_id)) |
c906108c | 11882 | { |
883bc8d1 PA |
11883 | struct symtab_and_line sal2; |
11884 | ||
11885 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11886 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11887 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11888 | sal2, |
11889 | caller_frame_id, | |
f107f563 VP |
11890 | bp_until); |
11891 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11892 | |
883bc8d1 | 11893 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11894 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11895 | } |
c5aa993b | 11896 | |
c70a6932 JK |
11897 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11898 | frame = NULL; | |
11899 | ||
883bc8d1 PA |
11900 | if (anywhere) |
11901 | /* If the user told us to continue until a specified location, | |
11902 | we don't specify a frame at which we need to stop. */ | |
11903 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11904 | null_frame_id, bp_until); | |
11905 | else | |
11906 | /* Otherwise, specify the selected frame, because we want to stop | |
11907 | only at the very same frame. */ | |
11908 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11909 | stack_frame_id, bp_until); | |
11910 | make_cleanup_delete_breakpoint (breakpoint); | |
11911 | ||
a493e3e2 | 11912 | proceed (-1, GDB_SIGNAL_DEFAULT, 0); |
f107f563 | 11913 | |
4a64f543 MS |
11914 | /* If we are running asynchronously, and proceed call above has |
11915 | actually managed to start the target, arrange for breakpoints to | |
11916 | be deleted when the target stops. Otherwise, we're already | |
11917 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11918 | |
8ea051c5 | 11919 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11920 | { |
bfec99b2 PA |
11921 | struct until_break_command_continuation_args *args; |
11922 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11923 | |
bfec99b2 PA |
11924 | args->breakpoint = breakpoint; |
11925 | args->breakpoint2 = breakpoint2; | |
186c406b | 11926 | args->thread_num = thread; |
f107f563 VP |
11927 | |
11928 | discard_cleanups (old_chain); | |
95e54da7 PA |
11929 | add_continuation (inferior_thread (), |
11930 | until_break_command_continuation, args, | |
604ead4a | 11931 | xfree); |
f107f563 VP |
11932 | } |
11933 | else | |
c5aa993b | 11934 | do_cleanups (old_chain); |
c906108c | 11935 | } |
ae66c1fc | 11936 | |
c906108c SS |
11937 | /* This function attempts to parse an optional "if <cond>" clause |
11938 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11939 | |
c906108c SS |
11940 | Else, it returns a pointer to the condition string. (It does not |
11941 | attempt to evaluate the string against a particular block.) And, | |
11942 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11943 | if clause in the arg string. */ |
53a5351d | 11944 | |
916703c0 | 11945 | char * |
fba45db2 | 11946 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11947 | { |
c5aa993b JM |
11948 | char *cond_string; |
11949 | ||
11950 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11951 | return NULL; |
c5aa993b | 11952 | |
4a64f543 | 11953 | /* Skip the "if" keyword. */ |
c906108c | 11954 | (*arg) += 2; |
c5aa993b | 11955 | |
c906108c | 11956 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11957 | condition string. */ |
e9cafbcc | 11958 | *arg = skip_spaces (*arg); |
c906108c | 11959 | cond_string = *arg; |
c5aa993b | 11960 | |
4a64f543 MS |
11961 | /* Assume that the condition occupies the remainder of the arg |
11962 | string. */ | |
c906108c | 11963 | (*arg) += strlen (cond_string); |
c5aa993b | 11964 | |
c906108c SS |
11965 | return cond_string; |
11966 | } | |
c5aa993b | 11967 | |
c906108c SS |
11968 | /* Commands to deal with catching events, such as signals, exceptions, |
11969 | process start/exit, etc. */ | |
c5aa993b JM |
11970 | |
11971 | typedef enum | |
11972 | { | |
44feb3ce TT |
11973 | catch_fork_temporary, catch_vfork_temporary, |
11974 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11975 | } |
11976 | catch_fork_kind; | |
11977 | ||
c906108c | 11978 | static void |
cc59ec59 MS |
11979 | catch_fork_command_1 (char *arg, int from_tty, |
11980 | struct cmd_list_element *command) | |
c906108c | 11981 | { |
a6d9a66e | 11982 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11983 | char *cond_string = NULL; |
44feb3ce TT |
11984 | catch_fork_kind fork_kind; |
11985 | int tempflag; | |
11986 | ||
11987 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11988 | tempflag = (fork_kind == catch_fork_temporary | |
11989 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11990 | |
44feb3ce TT |
11991 | if (!arg) |
11992 | arg = ""; | |
e9cafbcc | 11993 | arg = skip_spaces (arg); |
c5aa993b | 11994 | |
c906108c | 11995 | /* The allowed syntax is: |
c5aa993b JM |
11996 | catch [v]fork |
11997 | catch [v]fork if <cond> | |
11998 | ||
4a64f543 | 11999 | First, check if there's an if clause. */ |
c906108c | 12000 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 12001 | |
c906108c | 12002 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 12003 | error (_("Junk at end of arguments.")); |
c5aa993b | 12004 | |
c906108c | 12005 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 12006 | and enable reporting of such events. */ |
c5aa993b JM |
12007 | switch (fork_kind) |
12008 | { | |
44feb3ce TT |
12009 | case catch_fork_temporary: |
12010 | case catch_fork_permanent: | |
a6d9a66e | 12011 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 12012 | &catch_fork_breakpoint_ops); |
c906108c | 12013 | break; |
44feb3ce TT |
12014 | case catch_vfork_temporary: |
12015 | case catch_vfork_permanent: | |
a6d9a66e | 12016 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 12017 | &catch_vfork_breakpoint_ops); |
c906108c | 12018 | break; |
c5aa993b | 12019 | default: |
8a3fe4f8 | 12020 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 12021 | break; |
c5aa993b | 12022 | } |
c906108c SS |
12023 | } |
12024 | ||
12025 | static void | |
cc59ec59 MS |
12026 | catch_exec_command_1 (char *arg, int from_tty, |
12027 | struct cmd_list_element *command) | |
c906108c | 12028 | { |
b4d90040 | 12029 | struct exec_catchpoint *c; |
a6d9a66e | 12030 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 12031 | int tempflag; |
c5aa993b | 12032 | char *cond_string = NULL; |
c906108c | 12033 | |
44feb3ce TT |
12034 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
12035 | ||
12036 | if (!arg) | |
12037 | arg = ""; | |
e9cafbcc | 12038 | arg = skip_spaces (arg); |
c906108c SS |
12039 | |
12040 | /* The allowed syntax is: | |
c5aa993b JM |
12041 | catch exec |
12042 | catch exec if <cond> | |
c906108c | 12043 | |
4a64f543 | 12044 | First, check if there's an if clause. */ |
c906108c SS |
12045 | cond_string = ep_parse_optional_if_clause (&arg); |
12046 | ||
12047 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 12048 | error (_("Junk at end of arguments.")); |
c906108c | 12049 | |
b4d90040 PA |
12050 | c = XNEW (struct exec_catchpoint); |
12051 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
12052 | &catch_exec_breakpoint_ops); | |
12053 | c->exec_pathname = NULL; | |
12054 | ||
3ea46bff | 12055 | install_breakpoint (0, &c->base, 1); |
c906108c | 12056 | } |
c5aa993b | 12057 | |
9ac4176b | 12058 | void |
28010a5d PA |
12059 | init_ada_exception_breakpoint (struct breakpoint *b, |
12060 | struct gdbarch *gdbarch, | |
12061 | struct symtab_and_line sal, | |
12062 | char *addr_string, | |
c0a91b2b | 12063 | const struct breakpoint_ops *ops, |
28010a5d | 12064 | int tempflag, |
349774ef | 12065 | int enabled, |
28010a5d | 12066 | int from_tty) |
f7f9143b | 12067 | { |
f7f9143b JB |
12068 | if (from_tty) |
12069 | { | |
5af949e3 UW |
12070 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
12071 | if (!loc_gdbarch) | |
12072 | loc_gdbarch = gdbarch; | |
12073 | ||
6c95b8df PA |
12074 | describe_other_breakpoints (loc_gdbarch, |
12075 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
12076 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
12077 | version for exception catchpoints, because two catchpoints | |
12078 | used for different exception names will use the same address. | |
12079 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 12080 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 12081 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
12082 | the user what type of catchpoint it is. The above is good |
12083 | enough for now, though. */ | |
12084 | } | |
12085 | ||
28010a5d | 12086 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 12087 | |
349774ef | 12088 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 12089 | b->disposition = tempflag ? disp_del : disp_donttouch; |
f7f9143b JB |
12090 | b->addr_string = addr_string; |
12091 | b->language = language_ada; | |
f7f9143b JB |
12092 | } |
12093 | ||
a96d9b2e SDJ |
12094 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
12095 | filter list, or NULL if no filtering is required. */ | |
12096 | static VEC(int) * | |
12097 | catch_syscall_split_args (char *arg) | |
12098 | { | |
12099 | VEC(int) *result = NULL; | |
29d0bb3d | 12100 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
12101 | |
12102 | while (*arg != '\0') | |
12103 | { | |
12104 | int i, syscall_number; | |
12105 | char *endptr; | |
12106 | char cur_name[128]; | |
12107 | struct syscall s; | |
12108 | ||
12109 | /* Skip whitespace. */ | |
529480d0 | 12110 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
12111 | |
12112 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
12113 | cur_name[i] = arg[i]; | |
12114 | cur_name[i] = '\0'; | |
12115 | arg += i; | |
12116 | ||
12117 | /* Check if the user provided a syscall name or a number. */ | |
12118 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
12119 | if (*endptr == '\0') | |
bccd0dd2 | 12120 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
12121 | else |
12122 | { | |
12123 | /* We have a name. Let's check if it's valid and convert it | |
12124 | to a number. */ | |
12125 | get_syscall_by_name (cur_name, &s); | |
12126 | ||
12127 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
12128 | /* Here we have to issue an error instead of a warning, |
12129 | because GDB cannot do anything useful if there's no | |
12130 | syscall number to be caught. */ | |
a96d9b2e SDJ |
12131 | error (_("Unknown syscall name '%s'."), cur_name); |
12132 | } | |
12133 | ||
12134 | /* Ok, it's valid. */ | |
12135 | VEC_safe_push (int, result, s.number); | |
12136 | } | |
12137 | ||
12138 | discard_cleanups (cleanup); | |
12139 | return result; | |
12140 | } | |
12141 | ||
12142 | /* Implement the "catch syscall" command. */ | |
12143 | ||
12144 | static void | |
cc59ec59 MS |
12145 | catch_syscall_command_1 (char *arg, int from_tty, |
12146 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
12147 | { |
12148 | int tempflag; | |
12149 | VEC(int) *filter; | |
12150 | struct syscall s; | |
12151 | struct gdbarch *gdbarch = get_current_arch (); | |
12152 | ||
12153 | /* Checking if the feature if supported. */ | |
12154 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
12155 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 12156 | this architecture yet.")); |
a96d9b2e SDJ |
12157 | |
12158 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
12159 | ||
e9cafbcc | 12160 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
12161 | |
12162 | /* We need to do this first "dummy" translation in order | |
12163 | to get the syscall XML file loaded or, most important, | |
12164 | to display a warning to the user if there's no XML file | |
12165 | for his/her architecture. */ | |
12166 | get_syscall_by_number (0, &s); | |
12167 | ||
12168 | /* The allowed syntax is: | |
12169 | catch syscall | |
12170 | catch syscall <name | number> [<name | number> ... <name | number>] | |
12171 | ||
12172 | Let's check if there's a syscall name. */ | |
12173 | ||
12174 | if (arg != NULL) | |
12175 | filter = catch_syscall_split_args (arg); | |
12176 | else | |
12177 | filter = NULL; | |
12178 | ||
12179 | create_syscall_event_catchpoint (tempflag, filter, | |
12180 | &catch_syscall_breakpoint_ops); | |
12181 | } | |
12182 | ||
c906108c | 12183 | static void |
fba45db2 | 12184 | catch_command (char *arg, int from_tty) |
c906108c | 12185 | { |
44feb3ce | 12186 | error (_("Catch requires an event name.")); |
c906108c SS |
12187 | } |
12188 | \f | |
12189 | ||
12190 | static void | |
fba45db2 | 12191 | tcatch_command (char *arg, int from_tty) |
c906108c | 12192 | { |
44feb3ce | 12193 | error (_("Catch requires an event name.")); |
c906108c SS |
12194 | } |
12195 | ||
8a2c437b TT |
12196 | /* A qsort comparison function that sorts breakpoints in order. */ |
12197 | ||
12198 | static int | |
12199 | compare_breakpoints (const void *a, const void *b) | |
12200 | { | |
12201 | const breakpoint_p *ba = a; | |
12202 | uintptr_t ua = (uintptr_t) *ba; | |
12203 | const breakpoint_p *bb = b; | |
12204 | uintptr_t ub = (uintptr_t) *bb; | |
12205 | ||
12206 | if ((*ba)->number < (*bb)->number) | |
12207 | return -1; | |
12208 | else if ((*ba)->number > (*bb)->number) | |
12209 | return 1; | |
12210 | ||
12211 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
12212 | the number 0. */ | |
12213 | if (ua < ub) | |
12214 | return -1; | |
94b0e70d | 12215 | return ua > ub ? 1 : 0; |
8a2c437b TT |
12216 | } |
12217 | ||
80f8a6eb | 12218 | /* Delete breakpoints by address or line. */ |
c906108c SS |
12219 | |
12220 | static void | |
fba45db2 | 12221 | clear_command (char *arg, int from_tty) |
c906108c | 12222 | { |
8a2c437b | 12223 | struct breakpoint *b, *prev; |
d6e956e5 VP |
12224 | VEC(breakpoint_p) *found = 0; |
12225 | int ix; | |
c906108c SS |
12226 | int default_match; |
12227 | struct symtabs_and_lines sals; | |
12228 | struct symtab_and_line sal; | |
c906108c | 12229 | int i; |
8a2c437b | 12230 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
12231 | |
12232 | if (arg) | |
12233 | { | |
39cf75f7 DE |
12234 | sals = decode_line_with_current_source (arg, |
12235 | (DECODE_LINE_FUNFIRSTLINE | |
12236 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 12237 | make_cleanup (xfree, sals.sals); |
c906108c SS |
12238 | default_match = 0; |
12239 | } | |
12240 | else | |
12241 | { | |
c5aa993b | 12242 | sals.sals = (struct symtab_and_line *) |
c906108c | 12243 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 12244 | make_cleanup (xfree, sals.sals); |
4a64f543 | 12245 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
12246 | |
12247 | /* Set sal's line, symtab, pc, and pspace to the values | |
12248 | corresponding to the last call to print_frame_info. If the | |
12249 | codepoint is not valid, this will set all the fields to 0. */ | |
12250 | get_last_displayed_sal (&sal); | |
c906108c | 12251 | if (sal.symtab == 0) |
8a3fe4f8 | 12252 | error (_("No source file specified.")); |
c906108c SS |
12253 | |
12254 | sals.sals[0] = sal; | |
12255 | sals.nelts = 1; | |
12256 | ||
12257 | default_match = 1; | |
12258 | } | |
12259 | ||
4a64f543 MS |
12260 | /* We don't call resolve_sal_pc here. That's not as bad as it |
12261 | seems, because all existing breakpoints typically have both | |
12262 | file/line and pc set. So, if clear is given file/line, we can | |
12263 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
12264 | |
12265 | We only support clearing given the address explicitly | |
12266 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 12267 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 12268 | due to optimization, all in one block. |
4a64f543 MS |
12269 | |
12270 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
12271 | PC corresponding to the same file:line, the breakpoint won't |
12272 | be cleared. We probably can still clear the breakpoint, but | |
12273 | since the other PC value is never presented to user, user | |
12274 | can only find it by guessing, and it does not seem important | |
12275 | to support that. */ | |
12276 | ||
4a64f543 MS |
12277 | /* For each line spec given, delete bps which correspond to it. Do |
12278 | it in two passes, solely to preserve the current behavior that | |
12279 | from_tty is forced true if we delete more than one | |
12280 | breakpoint. */ | |
c906108c | 12281 | |
80f8a6eb | 12282 | found = NULL; |
8a2c437b | 12283 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
12284 | for (i = 0; i < sals.nelts; i++) |
12285 | { | |
05cba821 JK |
12286 | const char *sal_fullname; |
12287 | ||
c906108c | 12288 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
12289 | If line given (pc == 0), clear all bpts on specified line. |
12290 | If defaulting, clear all bpts on default line | |
c906108c | 12291 | or at default pc. |
c5aa993b JM |
12292 | |
12293 | defaulting sal.pc != 0 tests to do | |
12294 | ||
12295 | 0 1 pc | |
12296 | 1 1 pc _and_ line | |
12297 | 0 0 line | |
12298 | 1 0 <can't happen> */ | |
c906108c SS |
12299 | |
12300 | sal = sals.sals[i]; | |
05cba821 JK |
12301 | sal_fullname = (sal.symtab == NULL |
12302 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 12303 | |
4a64f543 | 12304 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 12305 | ALL_BREAKPOINTS (b) |
c5aa993b | 12306 | { |
0d381245 | 12307 | int match = 0; |
4a64f543 | 12308 | /* Are we going to delete b? */ |
cc60f2e3 | 12309 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
12310 | { |
12311 | struct bp_location *loc = b->loc; | |
12312 | for (; loc; loc = loc->next) | |
12313 | { | |
f8eba3c6 TT |
12314 | /* If the user specified file:line, don't allow a PC |
12315 | match. This matches historical gdb behavior. */ | |
12316 | int pc_match = (!sal.explicit_line | |
12317 | && sal.pc | |
12318 | && (loc->pspace == sal.pspace) | |
12319 | && (loc->address == sal.pc) | |
12320 | && (!section_is_overlay (loc->section) | |
12321 | || loc->section == sal.section)); | |
4aac40c8 TT |
12322 | int line_match = 0; |
12323 | ||
12324 | if ((default_match || sal.explicit_line) | |
2f202fde | 12325 | && loc->symtab != NULL |
05cba821 | 12326 | && sal_fullname != NULL |
4aac40c8 | 12327 | && sal.pspace == loc->pspace |
05cba821 JK |
12328 | && loc->line_number == sal.line |
12329 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
12330 | sal_fullname) == 0) | |
12331 | line_match = 1; | |
4aac40c8 | 12332 | |
0d381245 VP |
12333 | if (pc_match || line_match) |
12334 | { | |
12335 | match = 1; | |
12336 | break; | |
12337 | } | |
12338 | } | |
12339 | } | |
12340 | ||
12341 | if (match) | |
d6e956e5 | 12342 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 12343 | } |
80f8a6eb | 12344 | } |
8a2c437b | 12345 | |
80f8a6eb | 12346 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 12347 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
12348 | { |
12349 | if (arg) | |
8a3fe4f8 | 12350 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 12351 | else |
8a3fe4f8 | 12352 | error (_("No breakpoint at this line.")); |
80f8a6eb | 12353 | } |
c906108c | 12354 | |
8a2c437b TT |
12355 | /* Remove duplicates from the vec. */ |
12356 | qsort (VEC_address (breakpoint_p, found), | |
12357 | VEC_length (breakpoint_p, found), | |
12358 | sizeof (breakpoint_p), | |
12359 | compare_breakpoints); | |
12360 | prev = VEC_index (breakpoint_p, found, 0); | |
12361 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
12362 | { | |
12363 | if (b == prev) | |
12364 | { | |
12365 | VEC_ordered_remove (breakpoint_p, found, ix); | |
12366 | --ix; | |
12367 | } | |
12368 | } | |
12369 | ||
d6e956e5 | 12370 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 12371 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 12372 | if (from_tty) |
a3f17187 | 12373 | { |
d6e956e5 | 12374 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
12375 | printf_unfiltered (_("Deleted breakpoint ")); |
12376 | else | |
12377 | printf_unfiltered (_("Deleted breakpoints ")); | |
12378 | } | |
d6e956e5 VP |
12379 | |
12380 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 12381 | { |
c5aa993b | 12382 | if (from_tty) |
d6e956e5 VP |
12383 | printf_unfiltered ("%d ", b->number); |
12384 | delete_breakpoint (b); | |
c906108c | 12385 | } |
80f8a6eb MS |
12386 | if (from_tty) |
12387 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
12388 | |
12389 | do_cleanups (cleanups); | |
c906108c SS |
12390 | } |
12391 | \f | |
12392 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
12393 | all breakpoints that are marked for deletion, whether hit or not. | |
12394 | This is called after any breakpoint is hit, or after errors. */ | |
12395 | ||
12396 | void | |
fba45db2 | 12397 | breakpoint_auto_delete (bpstat bs) |
c906108c | 12398 | { |
35df4500 | 12399 | struct breakpoint *b, *b_tmp; |
c906108c SS |
12400 | |
12401 | for (; bs; bs = bs->next) | |
f431efe5 PA |
12402 | if (bs->breakpoint_at |
12403 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 12404 | && bs->stop) |
f431efe5 | 12405 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 12406 | |
35df4500 | 12407 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 12408 | { |
b5de0fa7 | 12409 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
12410 | delete_breakpoint (b); |
12411 | } | |
c906108c SS |
12412 | } |
12413 | ||
4a64f543 MS |
12414 | /* A comparison function for bp_location AP and BP being interfaced to |
12415 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
12416 | does breakpoint_address_is_meaningful say for its OWNER), | |
12417 | secondarily by ordering first bp_permanent OWNERed elements and | |
12418 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 12419 | qsort being an unstable algorithm. */ |
876fa593 JK |
12420 | |
12421 | static int | |
494cfb0f | 12422 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 12423 | { |
494cfb0f JK |
12424 | struct bp_location *a = *(void **) ap; |
12425 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 12426 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
12427 | int a_perm = a->owner->enable_state == bp_permanent; |
12428 | int b_perm = b->owner->enable_state == bp_permanent; | |
12429 | ||
12430 | if (a->address != b->address) | |
12431 | return (a->address > b->address) - (a->address < b->address); | |
12432 | ||
dea2aa5f LM |
12433 | /* Sort locations at the same address by their pspace number, keeping |
12434 | locations of the same inferior (in a multi-inferior environment) | |
12435 | grouped. */ | |
12436 | ||
12437 | if (a->pspace->num != b->pspace->num) | |
12438 | return ((a->pspace->num > b->pspace->num) | |
12439 | - (a->pspace->num < b->pspace->num)); | |
12440 | ||
876fa593 JK |
12441 | /* Sort permanent breakpoints first. */ |
12442 | if (a_perm != b_perm) | |
12443 | return (a_perm < b_perm) - (a_perm > b_perm); | |
12444 | ||
c56a97f9 JK |
12445 | /* Make the internal GDB representation stable across GDB runs |
12446 | where A and B memory inside GDB can differ. Breakpoint locations of | |
12447 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
12448 | |
12449 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
12450 | return ((a->owner->number > b->owner->number) |
12451 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
12452 | |
12453 | return (a > b) - (a < b); | |
12454 | } | |
12455 | ||
876fa593 | 12456 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
12457 | bp_location_shadow_len_after_address_max according to the current |
12458 | content of the bp_location array. */ | |
f7545552 TT |
12459 | |
12460 | static void | |
876fa593 | 12461 | bp_location_target_extensions_update (void) |
f7545552 | 12462 | { |
876fa593 JK |
12463 | struct bp_location *bl, **blp_tmp; |
12464 | ||
12465 | bp_location_placed_address_before_address_max = 0; | |
12466 | bp_location_shadow_len_after_address_max = 0; | |
12467 | ||
12468 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12469 | { | |
12470 | CORE_ADDR start, end, addr; | |
12471 | ||
12472 | if (!bp_location_has_shadow (bl)) | |
12473 | continue; | |
12474 | ||
12475 | start = bl->target_info.placed_address; | |
12476 | end = start + bl->target_info.shadow_len; | |
12477 | ||
12478 | gdb_assert (bl->address >= start); | |
12479 | addr = bl->address - start; | |
12480 | if (addr > bp_location_placed_address_before_address_max) | |
12481 | bp_location_placed_address_before_address_max = addr; | |
12482 | ||
12483 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12484 | ||
12485 | gdb_assert (bl->address < end); | |
12486 | addr = end - bl->address; | |
12487 | if (addr > bp_location_shadow_len_after_address_max) | |
12488 | bp_location_shadow_len_after_address_max = addr; | |
12489 | } | |
f7545552 TT |
12490 | } |
12491 | ||
1e4d1764 YQ |
12492 | /* Download tracepoint locations if they haven't been. */ |
12493 | ||
12494 | static void | |
12495 | download_tracepoint_locations (void) | |
12496 | { | |
7ed2c994 | 12497 | struct breakpoint *b; |
1e4d1764 YQ |
12498 | struct cleanup *old_chain; |
12499 | ||
12500 | if (!target_can_download_tracepoint ()) | |
12501 | return; | |
12502 | ||
12503 | old_chain = save_current_space_and_thread (); | |
12504 | ||
7ed2c994 | 12505 | ALL_TRACEPOINTS (b) |
1e4d1764 | 12506 | { |
7ed2c994 | 12507 | struct bp_location *bl; |
1e4d1764 | 12508 | struct tracepoint *t; |
f2a8bc8a | 12509 | int bp_location_downloaded = 0; |
1e4d1764 | 12510 | |
7ed2c994 | 12511 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
12512 | ? !may_insert_fast_tracepoints |
12513 | : !may_insert_tracepoints)) | |
12514 | continue; | |
12515 | ||
7ed2c994 YQ |
12516 | for (bl = b->loc; bl; bl = bl->next) |
12517 | { | |
12518 | /* In tracepoint, locations are _never_ duplicated, so | |
12519 | should_be_inserted is equivalent to | |
12520 | unduplicated_should_be_inserted. */ | |
12521 | if (!should_be_inserted (bl) || bl->inserted) | |
12522 | continue; | |
1e4d1764 | 12523 | |
7ed2c994 | 12524 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 12525 | |
7ed2c994 | 12526 | target_download_tracepoint (bl); |
1e4d1764 | 12527 | |
7ed2c994 | 12528 | bl->inserted = 1; |
f2a8bc8a | 12529 | bp_location_downloaded = 1; |
7ed2c994 YQ |
12530 | } |
12531 | t = (struct tracepoint *) b; | |
12532 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
12533 | if (bp_location_downloaded) |
12534 | observer_notify_breakpoint_modified (b); | |
1e4d1764 YQ |
12535 | } |
12536 | ||
12537 | do_cleanups (old_chain); | |
12538 | } | |
12539 | ||
934709f0 PW |
12540 | /* Swap the insertion/duplication state between two locations. */ |
12541 | ||
12542 | static void | |
12543 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12544 | { | |
12545 | const int left_inserted = left->inserted; | |
12546 | const int left_duplicate = left->duplicate; | |
b775012e | 12547 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12548 | const struct bp_target_info left_target_info = left->target_info; |
12549 | ||
1e4d1764 YQ |
12550 | /* Locations of tracepoints can never be duplicated. */ |
12551 | if (is_tracepoint (left->owner)) | |
12552 | gdb_assert (!left->duplicate); | |
12553 | if (is_tracepoint (right->owner)) | |
12554 | gdb_assert (!right->duplicate); | |
12555 | ||
934709f0 PW |
12556 | left->inserted = right->inserted; |
12557 | left->duplicate = right->duplicate; | |
b775012e | 12558 | left->needs_update = right->needs_update; |
934709f0 PW |
12559 | left->target_info = right->target_info; |
12560 | right->inserted = left_inserted; | |
12561 | right->duplicate = left_duplicate; | |
b775012e | 12562 | right->needs_update = left_needs_update; |
934709f0 PW |
12563 | right->target_info = left_target_info; |
12564 | } | |
12565 | ||
b775012e LM |
12566 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12567 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12568 | conditions on the target's side. Such conditions need to be updated on | |
12569 | the target. */ | |
12570 | ||
12571 | static void | |
12572 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12573 | { | |
12574 | struct bp_location **locp = NULL, **loc2p; | |
12575 | struct bp_location *loc; | |
12576 | CORE_ADDR address = 0; | |
12577 | int pspace_num; | |
12578 | ||
12579 | address = bl->address; | |
12580 | pspace_num = bl->pspace->num; | |
12581 | ||
12582 | /* This is only meaningful if the target is | |
12583 | evaluating conditions and if the user has | |
12584 | opted for condition evaluation on the target's | |
12585 | side. */ | |
12586 | if (gdb_evaluates_breakpoint_condition_p () | |
12587 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12588 | return; | |
12589 | ||
12590 | /* Flag all breakpoint locations with this address and | |
12591 | the same program space as the location | |
12592 | as "its condition has changed". We need to | |
12593 | update the conditions on the target's side. */ | |
12594 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12595 | { | |
12596 | loc = *loc2p; | |
12597 | ||
12598 | if (!is_breakpoint (loc->owner) | |
12599 | || pspace_num != loc->pspace->num) | |
12600 | continue; | |
12601 | ||
12602 | /* Flag the location appropriately. We use a different state to | |
12603 | let everyone know that we already updated the set of locations | |
12604 | with addr bl->address and program space bl->pspace. This is so | |
12605 | we don't have to keep calling these functions just to mark locations | |
12606 | that have already been marked. */ | |
12607 | loc->condition_changed = condition_updated; | |
12608 | ||
12609 | /* Free the agent expression bytecode as well. We will compute | |
12610 | it later on. */ | |
12611 | if (loc->cond_bytecode) | |
12612 | { | |
12613 | free_agent_expr (loc->cond_bytecode); | |
12614 | loc->cond_bytecode = NULL; | |
12615 | } | |
12616 | } | |
12617 | } | |
44702360 PA |
12618 | /* Called whether new breakpoints are created, or existing breakpoints |
12619 | deleted, to update the global location list and recompute which | |
12620 | locations are duplicate of which. | |
b775012e | 12621 | |
04086b45 PA |
12622 | The INSERT_MODE flag determines whether locations may not, may, or |
12623 | shall be inserted now. See 'enum ugll_insert_mode' for more | |
12624 | info. */ | |
b60e7edf | 12625 | |
0d381245 | 12626 | static void |
44702360 | 12627 | update_global_location_list (enum ugll_insert_mode insert_mode) |
0d381245 | 12628 | { |
74960c60 | 12629 | struct breakpoint *b; |
876fa593 | 12630 | struct bp_location **locp, *loc; |
f7545552 | 12631 | struct cleanup *cleanups; |
b775012e LM |
12632 | /* Last breakpoint location address that was marked for update. */ |
12633 | CORE_ADDR last_addr = 0; | |
12634 | /* Last breakpoint location program space that was marked for update. */ | |
12635 | int last_pspace_num = -1; | |
f7545552 | 12636 | |
2d134ed3 PA |
12637 | /* Used in the duplicates detection below. When iterating over all |
12638 | bp_locations, points to the first bp_location of a given address. | |
12639 | Breakpoints and watchpoints of different types are never | |
12640 | duplicates of each other. Keep one pointer for each type of | |
12641 | breakpoint/watchpoint, so we only need to loop over all locations | |
12642 | once. */ | |
12643 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12644 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12645 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12646 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12647 | |
4a64f543 MS |
12648 | /* Saved former bp_location array which we compare against the newly |
12649 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12650 | struct bp_location **old_location, **old_locp; |
12651 | unsigned old_location_count; | |
12652 | ||
12653 | old_location = bp_location; | |
12654 | old_location_count = bp_location_count; | |
12655 | bp_location = NULL; | |
12656 | bp_location_count = 0; | |
12657 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12658 | |
74960c60 | 12659 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12660 | for (loc = b->loc; loc; loc = loc->next) |
12661 | bp_location_count++; | |
12662 | ||
12663 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12664 | locp = bp_location; | |
12665 | ALL_BREAKPOINTS (b) | |
12666 | for (loc = b->loc; loc; loc = loc->next) | |
12667 | *locp++ = loc; | |
12668 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12669 | bp_location_compare); |
876fa593 JK |
12670 | |
12671 | bp_location_target_extensions_update (); | |
74960c60 | 12672 | |
4a64f543 MS |
12673 | /* Identify bp_location instances that are no longer present in the |
12674 | new list, and therefore should be freed. Note that it's not | |
12675 | necessary that those locations should be removed from inferior -- | |
12676 | if there's another location at the same address (previously | |
12677 | marked as duplicate), we don't need to remove/insert the | |
12678 | location. | |
876fa593 | 12679 | |
4a64f543 MS |
12680 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12681 | and former bp_location array state respectively. */ | |
876fa593 JK |
12682 | |
12683 | locp = bp_location; | |
12684 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12685 | old_locp++) | |
74960c60 | 12686 | { |
876fa593 | 12687 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12688 | struct bp_location **loc2p; |
876fa593 | 12689 | |
e5dd4106 | 12690 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12691 | not, we have to free it. */ |
c7d46a38 | 12692 | int found_object = 0; |
20874c92 VP |
12693 | /* Tells if the location should remain inserted in the target. */ |
12694 | int keep_in_target = 0; | |
12695 | int removed = 0; | |
876fa593 | 12696 | |
4a64f543 MS |
12697 | /* Skip LOCP entries which will definitely never be needed. |
12698 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12699 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12700 | && (*locp)->address < old_loc->address) |
876fa593 | 12701 | locp++; |
c7d46a38 PA |
12702 | |
12703 | for (loc2p = locp; | |
12704 | (loc2p < bp_location + bp_location_count | |
12705 | && (*loc2p)->address == old_loc->address); | |
12706 | loc2p++) | |
12707 | { | |
b775012e LM |
12708 | /* Check if this is a new/duplicated location or a duplicated |
12709 | location that had its condition modified. If so, we want to send | |
12710 | its condition to the target if evaluation of conditions is taking | |
12711 | place there. */ | |
12712 | if ((*loc2p)->condition_changed == condition_modified | |
12713 | && (last_addr != old_loc->address | |
12714 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12715 | { |
b775012e LM |
12716 | force_breakpoint_reinsertion (*loc2p); |
12717 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12718 | } |
b775012e LM |
12719 | |
12720 | if (*loc2p == old_loc) | |
12721 | found_object = 1; | |
c7d46a38 | 12722 | } |
74960c60 | 12723 | |
b775012e LM |
12724 | /* We have already handled this address, update it so that we don't |
12725 | have to go through updates again. */ | |
12726 | last_addr = old_loc->address; | |
12727 | ||
12728 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12729 | if (!found_object) | |
12730 | force_breakpoint_reinsertion (old_loc); | |
12731 | ||
4a64f543 MS |
12732 | /* If this location is no longer present, and inserted, look if |
12733 | there's maybe a new location at the same address. If so, | |
12734 | mark that one inserted, and don't remove this one. This is | |
12735 | needed so that we don't have a time window where a breakpoint | |
12736 | at certain location is not inserted. */ | |
74960c60 | 12737 | |
876fa593 | 12738 | if (old_loc->inserted) |
0d381245 | 12739 | { |
4a64f543 MS |
12740 | /* If the location is inserted now, we might have to remove |
12741 | it. */ | |
74960c60 | 12742 | |
876fa593 | 12743 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12744 | { |
4a64f543 MS |
12745 | /* The location is still present in the location list, |
12746 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12747 | keep_in_target = 1; |
74960c60 VP |
12748 | } |
12749 | else | |
12750 | { | |
b775012e LM |
12751 | /* This location still exists, but it won't be kept in the |
12752 | target since it may have been disabled. We proceed to | |
12753 | remove its target-side condition. */ | |
12754 | ||
4a64f543 MS |
12755 | /* The location is either no longer present, or got |
12756 | disabled. See if there's another location at the | |
12757 | same address, in which case we don't need to remove | |
12758 | this one from the target. */ | |
876fa593 | 12759 | |
2bdf28a0 | 12760 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12761 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12762 | { | |
876fa593 | 12763 | for (loc2p = locp; |
c7d46a38 PA |
12764 | (loc2p < bp_location + bp_location_count |
12765 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12766 | loc2p++) |
12767 | { | |
12768 | struct bp_location *loc2 = *loc2p; | |
12769 | ||
2d134ed3 | 12770 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12771 | { |
85d721b8 PA |
12772 | /* Read watchpoint locations are switched to |
12773 | access watchpoints, if the former are not | |
12774 | supported, but the latter are. */ | |
12775 | if (is_hardware_watchpoint (old_loc->owner)) | |
12776 | { | |
12777 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12778 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12779 | } | |
12780 | ||
934709f0 PW |
12781 | /* loc2 is a duplicated location. We need to check |
12782 | if it should be inserted in case it will be | |
12783 | unduplicated. */ | |
12784 | if (loc2 != old_loc | |
12785 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12786 | { |
934709f0 | 12787 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12788 | keep_in_target = 1; |
12789 | break; | |
12790 | } | |
876fa593 JK |
12791 | } |
12792 | } | |
12793 | } | |
74960c60 VP |
12794 | } |
12795 | ||
20874c92 VP |
12796 | if (!keep_in_target) |
12797 | { | |
876fa593 | 12798 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12799 | { |
4a64f543 MS |
12800 | /* This is just about all we can do. We could keep |
12801 | this location on the global list, and try to | |
12802 | remove it next time, but there's no particular | |
12803 | reason why we will succeed next time. | |
20874c92 | 12804 | |
4a64f543 MS |
12805 | Note that at this point, old_loc->owner is still |
12806 | valid, as delete_breakpoint frees the breakpoint | |
12807 | only after calling us. */ | |
3e43a32a MS |
12808 | printf_filtered (_("warning: Error removing " |
12809 | "breakpoint %d\n"), | |
876fa593 | 12810 | old_loc->owner->number); |
20874c92 VP |
12811 | } |
12812 | removed = 1; | |
12813 | } | |
0d381245 | 12814 | } |
74960c60 VP |
12815 | |
12816 | if (!found_object) | |
1c5cfe86 | 12817 | { |
db82e815 PA |
12818 | if (removed && non_stop |
12819 | && breakpoint_address_is_meaningful (old_loc->owner) | |
12820 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 12821 | { |
db82e815 PA |
12822 | /* This location was removed from the target. In |
12823 | non-stop mode, a race condition is possible where | |
12824 | we've removed a breakpoint, but stop events for that | |
12825 | breakpoint are already queued and will arrive later. | |
12826 | We apply an heuristic to be able to distinguish such | |
12827 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12828 | breakpoint location for a bit, and will retire it | |
12829 | after we see some number of events. The theory here | |
12830 | is that reporting of events should, "on the average", | |
12831 | be fair, so after a while we'll see events from all | |
12832 | threads that have anything of interest, and no longer | |
12833 | need to keep this breakpoint location around. We | |
12834 | don't hold locations forever so to reduce chances of | |
12835 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12836 | SIGTRAP. | |
12837 | ||
12838 | The heuristic failing can be disastrous on | |
12839 | decr_pc_after_break targets. | |
12840 | ||
12841 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12842 | if we fail to recognize a late breakpoint SIGTRAP, | |
12843 | because events_till_retirement has reached 0 too | |
12844 | soon, we'll fail to do the PC adjustment, and report | |
12845 | a random SIGTRAP to the user. When the user resumes | |
12846 | the inferior, it will most likely immediately crash | |
2dec564e | 12847 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12848 | corrupted, because of being resumed e.g., in the |
12849 | middle of a multi-byte instruction, or skipped a | |
12850 | one-byte instruction. This was actually seen happen | |
12851 | on native x86-linux, and should be less rare on | |
12852 | targets that do not support new thread events, like | |
12853 | remote, due to the heuristic depending on | |
12854 | thread_count. | |
12855 | ||
12856 | Mistaking a random SIGTRAP for a breakpoint trap | |
12857 | causes similar symptoms (PC adjustment applied when | |
12858 | it shouldn't), but then again, playing with SIGTRAPs | |
12859 | behind the debugger's back is asking for trouble. | |
12860 | ||
12861 | Since hardware watchpoint traps are always | |
12862 | distinguishable from other traps, so we don't need to | |
12863 | apply keep hardware watchpoint moribund locations | |
12864 | around. We simply always ignore hardware watchpoint | |
12865 | traps we can no longer explain. */ | |
12866 | ||
876fa593 JK |
12867 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12868 | old_loc->owner = NULL; | |
20874c92 | 12869 | |
876fa593 | 12870 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12871 | } |
12872 | else | |
f431efe5 PA |
12873 | { |
12874 | old_loc->owner = NULL; | |
12875 | decref_bp_location (&old_loc); | |
12876 | } | |
20874c92 | 12877 | } |
74960c60 | 12878 | } |
1c5cfe86 | 12879 | |
348d480f PA |
12880 | /* Rescan breakpoints at the same address and section, marking the |
12881 | first one as "first" and any others as "duplicates". This is so | |
12882 | that the bpt instruction is only inserted once. If we have a | |
12883 | permanent breakpoint at the same place as BPT, make that one the | |
12884 | official one, and the rest as duplicates. Permanent breakpoints | |
12885 | are sorted first for the same address. | |
12886 | ||
12887 | Do the same for hardware watchpoints, but also considering the | |
12888 | watchpoint's type (regular/access/read) and length. */ | |
12889 | ||
12890 | bp_loc_first = NULL; | |
12891 | wp_loc_first = NULL; | |
12892 | awp_loc_first = NULL; | |
12893 | rwp_loc_first = NULL; | |
12894 | ALL_BP_LOCATIONS (loc, locp) | |
12895 | { | |
12896 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12897 | non-NULL. */ | |
348d480f | 12898 | struct bp_location **loc_first_p; |
d3fbdd86 | 12899 | b = loc->owner; |
348d480f | 12900 | |
6f380991 | 12901 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12902 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12903 | /* Don't detect duplicate for tracepoint locations because they are |
12904 | never duplicated. See the comments in field `duplicate' of | |
12905 | `struct bp_location'. */ | |
348d480f | 12906 | || is_tracepoint (b)) |
b775012e LM |
12907 | { |
12908 | /* Clear the condition modification flag. */ | |
12909 | loc->condition_changed = condition_unchanged; | |
12910 | continue; | |
12911 | } | |
348d480f PA |
12912 | |
12913 | /* Permanent breakpoint should always be inserted. */ | |
12914 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12915 | internal_error (__FILE__, __LINE__, | |
12916 | _("allegedly permanent breakpoint is not " | |
12917 | "actually inserted")); | |
12918 | ||
12919 | if (b->type == bp_hardware_watchpoint) | |
12920 | loc_first_p = &wp_loc_first; | |
12921 | else if (b->type == bp_read_watchpoint) | |
12922 | loc_first_p = &rwp_loc_first; | |
12923 | else if (b->type == bp_access_watchpoint) | |
12924 | loc_first_p = &awp_loc_first; | |
12925 | else | |
12926 | loc_first_p = &bp_loc_first; | |
12927 | ||
12928 | if (*loc_first_p == NULL | |
12929 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12930 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12931 | { | |
12932 | *loc_first_p = loc; | |
12933 | loc->duplicate = 0; | |
b775012e LM |
12934 | |
12935 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12936 | { | |
12937 | loc->needs_update = 1; | |
12938 | /* Clear the condition modification flag. */ | |
12939 | loc->condition_changed = condition_unchanged; | |
12940 | } | |
348d480f PA |
12941 | continue; |
12942 | } | |
12943 | ||
934709f0 PW |
12944 | |
12945 | /* This and the above ensure the invariant that the first location | |
12946 | is not duplicated, and is the inserted one. | |
12947 | All following are marked as duplicated, and are not inserted. */ | |
12948 | if (loc->inserted) | |
12949 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12950 | loc->duplicate = 1; |
12951 | ||
b775012e LM |
12952 | /* Clear the condition modification flag. */ |
12953 | loc->condition_changed = condition_unchanged; | |
12954 | ||
348d480f PA |
12955 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12956 | && b->enable_state != bp_permanent) | |
12957 | internal_error (__FILE__, __LINE__, | |
12958 | _("another breakpoint was inserted on top of " | |
12959 | "a permanent breakpoint")); | |
12960 | } | |
12961 | ||
a25a5a45 | 12962 | if (insert_mode == UGLL_INSERT || breakpoints_should_be_inserted_now ()) |
b775012e | 12963 | { |
04086b45 | 12964 | if (insert_mode != UGLL_DONT_INSERT) |
b775012e LM |
12965 | insert_breakpoint_locations (); |
12966 | else | |
12967 | { | |
44702360 PA |
12968 | /* Even though the caller told us to not insert new |
12969 | locations, we may still need to update conditions on the | |
12970 | target's side of breakpoints that were already inserted | |
12971 | if the target is evaluating breakpoint conditions. We | |
b775012e LM |
12972 | only update conditions for locations that are marked |
12973 | "needs_update". */ | |
12974 | update_inserted_breakpoint_locations (); | |
12975 | } | |
12976 | } | |
348d480f | 12977 | |
04086b45 | 12978 | if (insert_mode != UGLL_DONT_INSERT) |
1e4d1764 YQ |
12979 | download_tracepoint_locations (); |
12980 | ||
348d480f PA |
12981 | do_cleanups (cleanups); |
12982 | } | |
12983 | ||
12984 | void | |
12985 | breakpoint_retire_moribund (void) | |
12986 | { | |
12987 | struct bp_location *loc; | |
12988 | int ix; | |
12989 | ||
12990 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12991 | if (--(loc->events_till_retirement) == 0) | |
12992 | { | |
12993 | decref_bp_location (&loc); | |
12994 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12995 | --ix; | |
12996 | } | |
12997 | } | |
12998 | ||
12999 | static void | |
44702360 | 13000 | update_global_location_list_nothrow (enum ugll_insert_mode insert_mode) |
348d480f | 13001 | { |
bfd189b1 | 13002 | volatile struct gdb_exception e; |
348d480f PA |
13003 | |
13004 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
44702360 | 13005 | update_global_location_list (insert_mode); |
348d480f PA |
13006 | } |
13007 | ||
13008 | /* Clear BKP from a BPS. */ | |
13009 | ||
13010 | static void | |
13011 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
13012 | { | |
13013 | bpstat bs; | |
13014 | ||
13015 | for (bs = bps; bs; bs = bs->next) | |
13016 | if (bs->breakpoint_at == bpt) | |
13017 | { | |
13018 | bs->breakpoint_at = NULL; | |
13019 | bs->old_val = NULL; | |
13020 | /* bs->commands will be freed later. */ | |
13021 | } | |
13022 | } | |
13023 | ||
13024 | /* Callback for iterate_over_threads. */ | |
13025 | static int | |
13026 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
13027 | { | |
13028 | struct breakpoint *bpt = data; | |
13029 | ||
13030 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
13031 | return 0; | |
13032 | } | |
13033 | ||
13034 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
13035 | callbacks. */ | |
13036 | ||
13037 | static void | |
13038 | say_where (struct breakpoint *b) | |
13039 | { | |
13040 | struct value_print_options opts; | |
13041 | ||
13042 | get_user_print_options (&opts); | |
13043 | ||
13044 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
13045 | single string. */ | |
13046 | if (b->loc == NULL) | |
13047 | { | |
13048 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
13049 | } | |
13050 | else | |
13051 | { | |
2f202fde | 13052 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
13053 | { |
13054 | printf_filtered (" at "); | |
13055 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
13056 | gdb_stdout); | |
13057 | } | |
2f202fde | 13058 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
13059 | { |
13060 | /* If there is a single location, we can print the location | |
13061 | more nicely. */ | |
13062 | if (b->loc->next == NULL) | |
13063 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
13064 | symtab_to_filename_for_display (b->loc->symtab), |
13065 | b->loc->line_number); | |
f8eba3c6 TT |
13066 | else |
13067 | /* This is not ideal, but each location may have a | |
13068 | different file name, and this at least reflects the | |
13069 | real situation somewhat. */ | |
13070 | printf_filtered (": %s.", b->addr_string); | |
13071 | } | |
348d480f PA |
13072 | |
13073 | if (b->loc->next) | |
13074 | { | |
13075 | struct bp_location *loc = b->loc; | |
13076 | int n = 0; | |
13077 | for (; loc; loc = loc->next) | |
13078 | ++n; | |
13079 | printf_filtered (" (%d locations)", n); | |
13080 | } | |
13081 | } | |
13082 | } | |
13083 | ||
348d480f PA |
13084 | /* Default bp_location_ops methods. */ |
13085 | ||
13086 | static void | |
13087 | bp_location_dtor (struct bp_location *self) | |
13088 | { | |
13089 | xfree (self->cond); | |
b775012e LM |
13090 | if (self->cond_bytecode) |
13091 | free_agent_expr (self->cond_bytecode); | |
348d480f | 13092 | xfree (self->function_name); |
8b4f3082 PA |
13093 | |
13094 | VEC_free (agent_expr_p, self->target_info.conditions); | |
13095 | VEC_free (agent_expr_p, self->target_info.tcommands); | |
348d480f PA |
13096 | } |
13097 | ||
13098 | static const struct bp_location_ops bp_location_ops = | |
13099 | { | |
13100 | bp_location_dtor | |
13101 | }; | |
13102 | ||
2060206e PA |
13103 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
13104 | inherit from. */ | |
348d480f | 13105 | |
2060206e PA |
13106 | static void |
13107 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
13108 | { |
13109 | decref_counted_command_line (&self->commands); | |
13110 | xfree (self->cond_string); | |
fb81d016 | 13111 | xfree (self->extra_string); |
348d480f | 13112 | xfree (self->addr_string); |
f8eba3c6 | 13113 | xfree (self->filter); |
348d480f | 13114 | xfree (self->addr_string_range_end); |
348d480f PA |
13115 | } |
13116 | ||
2060206e PA |
13117 | static struct bp_location * |
13118 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
13119 | { |
13120 | struct bp_location *loc; | |
13121 | ||
13122 | loc = XNEW (struct bp_location); | |
13123 | init_bp_location (loc, &bp_location_ops, self); | |
13124 | return loc; | |
13125 | } | |
13126 | ||
2060206e PA |
13127 | static void |
13128 | base_breakpoint_re_set (struct breakpoint *b) | |
13129 | { | |
13130 | /* Nothing to re-set. */ | |
13131 | } | |
13132 | ||
13133 | #define internal_error_pure_virtual_called() \ | |
13134 | gdb_assert_not_reached ("pure virtual function called") | |
13135 | ||
13136 | static int | |
13137 | base_breakpoint_insert_location (struct bp_location *bl) | |
13138 | { | |
13139 | internal_error_pure_virtual_called (); | |
13140 | } | |
13141 | ||
13142 | static int | |
13143 | base_breakpoint_remove_location (struct bp_location *bl) | |
13144 | { | |
13145 | internal_error_pure_virtual_called (); | |
13146 | } | |
13147 | ||
13148 | static int | |
13149 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
13150 | struct address_space *aspace, | |
09ac7c10 TT |
13151 | CORE_ADDR bp_addr, |
13152 | const struct target_waitstatus *ws) | |
2060206e PA |
13153 | { |
13154 | internal_error_pure_virtual_called (); | |
13155 | } | |
13156 | ||
13157 | static void | |
13158 | base_breakpoint_check_status (bpstat bs) | |
13159 | { | |
13160 | /* Always stop. */ | |
13161 | } | |
13162 | ||
13163 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
13164 | errors. */ | |
13165 | ||
13166 | static int | |
13167 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
13168 | { | |
13169 | internal_error_pure_virtual_called (); | |
13170 | } | |
13171 | ||
13172 | /* A "resources_needed" breakpoint_ops method that just internal | |
13173 | errors. */ | |
13174 | ||
13175 | static int | |
13176 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
13177 | { | |
13178 | internal_error_pure_virtual_called (); | |
13179 | } | |
13180 | ||
13181 | static enum print_stop_action | |
13182 | base_breakpoint_print_it (bpstat bs) | |
13183 | { | |
13184 | internal_error_pure_virtual_called (); | |
13185 | } | |
13186 | ||
13187 | static void | |
13188 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
13189 | struct ui_out *uiout) | |
13190 | { | |
13191 | /* nothing */ | |
13192 | } | |
13193 | ||
13194 | static void | |
13195 | base_breakpoint_print_mention (struct breakpoint *b) | |
13196 | { | |
13197 | internal_error_pure_virtual_called (); | |
13198 | } | |
13199 | ||
13200 | static void | |
13201 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
13202 | { | |
13203 | internal_error_pure_virtual_called (); | |
13204 | } | |
13205 | ||
983af33b SDJ |
13206 | static void |
13207 | base_breakpoint_create_sals_from_address (char **arg, | |
13208 | struct linespec_result *canonical, | |
13209 | enum bptype type_wanted, | |
13210 | char *addr_start, | |
13211 | char **copy_arg) | |
13212 | { | |
13213 | internal_error_pure_virtual_called (); | |
13214 | } | |
13215 | ||
13216 | static void | |
13217 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13218 | struct linespec_result *c, | |
983af33b | 13219 | char *cond_string, |
e7e0cddf | 13220 | char *extra_string, |
983af33b SDJ |
13221 | enum bptype type_wanted, |
13222 | enum bpdisp disposition, | |
13223 | int thread, | |
13224 | int task, int ignore_count, | |
13225 | const struct breakpoint_ops *o, | |
13226 | int from_tty, int enabled, | |
44f238bb | 13227 | int internal, unsigned flags) |
983af33b SDJ |
13228 | { |
13229 | internal_error_pure_virtual_called (); | |
13230 | } | |
13231 | ||
13232 | static void | |
13233 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
13234 | struct symtabs_and_lines *sals) | |
13235 | { | |
13236 | internal_error_pure_virtual_called (); | |
13237 | } | |
13238 | ||
ab04a2af TT |
13239 | /* The default 'explains_signal' method. */ |
13240 | ||
47591c29 | 13241 | static int |
427cd150 | 13242 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 13243 | { |
47591c29 | 13244 | return 1; |
ab04a2af TT |
13245 | } |
13246 | ||
9d6e6e84 HZ |
13247 | /* The default "after_condition_true" method. */ |
13248 | ||
13249 | static void | |
13250 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
13251 | { | |
13252 | /* Nothing to do. */ | |
13253 | } | |
13254 | ||
ab04a2af | 13255 | struct breakpoint_ops base_breakpoint_ops = |
2060206e PA |
13256 | { |
13257 | base_breakpoint_dtor, | |
13258 | base_breakpoint_allocate_location, | |
13259 | base_breakpoint_re_set, | |
13260 | base_breakpoint_insert_location, | |
13261 | base_breakpoint_remove_location, | |
13262 | base_breakpoint_breakpoint_hit, | |
13263 | base_breakpoint_check_status, | |
13264 | base_breakpoint_resources_needed, | |
13265 | base_breakpoint_works_in_software_mode, | |
13266 | base_breakpoint_print_it, | |
13267 | NULL, | |
13268 | base_breakpoint_print_one_detail, | |
13269 | base_breakpoint_print_mention, | |
983af33b SDJ |
13270 | base_breakpoint_print_recreate, |
13271 | base_breakpoint_create_sals_from_address, | |
13272 | base_breakpoint_create_breakpoints_sal, | |
13273 | base_breakpoint_decode_linespec, | |
9d6e6e84 HZ |
13274 | base_breakpoint_explains_signal, |
13275 | base_breakpoint_after_condition_true, | |
2060206e PA |
13276 | }; |
13277 | ||
13278 | /* Default breakpoint_ops methods. */ | |
13279 | ||
13280 | static void | |
348d480f PA |
13281 | bkpt_re_set (struct breakpoint *b) |
13282 | { | |
06edf0c0 PA |
13283 | /* FIXME: is this still reachable? */ |
13284 | if (b->addr_string == NULL) | |
13285 | { | |
13286 | /* Anything without a string can't be re-set. */ | |
348d480f | 13287 | delete_breakpoint (b); |
06edf0c0 | 13288 | return; |
348d480f | 13289 | } |
06edf0c0 PA |
13290 | |
13291 | breakpoint_re_set_default (b); | |
348d480f PA |
13292 | } |
13293 | ||
ef370185 JB |
13294 | /* Copy SRC's shadow buffer and whatever else we'd set if we actually |
13295 | inserted DEST, so we can remove it later, in case SRC is removed | |
13296 | first. */ | |
13297 | ||
13298 | static void | |
13299 | bp_target_info_copy_insertion_state (struct bp_target_info *dest, | |
13300 | const struct bp_target_info *src) | |
13301 | { | |
13302 | dest->shadow_len = src->shadow_len; | |
13303 | memcpy (dest->shadow_contents, src->shadow_contents, src->shadow_len); | |
0d5ed153 | 13304 | dest->placed_address = src->placed_address; |
ef370185 JB |
13305 | dest->placed_size = src->placed_size; |
13306 | } | |
13307 | ||
2060206e | 13308 | static int |
348d480f PA |
13309 | bkpt_insert_location (struct bp_location *bl) |
13310 | { | |
13311 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
13312 | return target_insert_hw_breakpoint (bl->gdbarch, | |
13313 | &bl->target_info); | |
13314 | else | |
ef370185 JB |
13315 | { |
13316 | struct bp_target_info *bp_tgt = &bl->target_info; | |
13317 | int ret; | |
13318 | int sss_slot; | |
13319 | ||
13320 | /* There is no need to insert a breakpoint if an unconditional | |
13321 | raw/sss breakpoint is already inserted at that location. */ | |
13322 | sss_slot = find_single_step_breakpoint (bp_tgt->placed_address_space, | |
0d5ed153 | 13323 | bp_tgt->reqstd_address); |
ef370185 JB |
13324 | if (sss_slot >= 0) |
13325 | { | |
13326 | struct bp_target_info *sss_bp_tgt = single_step_breakpoints[sss_slot]; | |
13327 | ||
13328 | bp_target_info_copy_insertion_state (bp_tgt, sss_bp_tgt); | |
13329 | return 0; | |
13330 | } | |
13331 | ||
13332 | return target_insert_breakpoint (bl->gdbarch, bp_tgt); | |
13333 | } | |
348d480f PA |
13334 | } |
13335 | ||
2060206e | 13336 | static int |
348d480f PA |
13337 | bkpt_remove_location (struct bp_location *bl) |
13338 | { | |
13339 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
13340 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
13341 | else | |
ef370185 JB |
13342 | { |
13343 | struct bp_target_info *bp_tgt = &bl->target_info; | |
13344 | struct address_space *aspace = bp_tgt->placed_address_space; | |
0d5ed153 | 13345 | CORE_ADDR address = bp_tgt->reqstd_address; |
ef370185 JB |
13346 | |
13347 | /* Only remove the breakpoint if there is no raw/sss breakpoint | |
13348 | still inserted at this location. Otherwise, we would be | |
13349 | effectively disabling the raw/sss breakpoint. */ | |
13350 | if (single_step_breakpoint_inserted_here_p (aspace, address)) | |
13351 | return 0; | |
13352 | ||
13353 | return target_remove_breakpoint (bl->gdbarch, bp_tgt); | |
13354 | } | |
348d480f PA |
13355 | } |
13356 | ||
2060206e | 13357 | static int |
348d480f | 13358 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
13359 | struct address_space *aspace, CORE_ADDR bp_addr, |
13360 | const struct target_waitstatus *ws) | |
348d480f | 13361 | { |
09ac7c10 | 13362 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 13363 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
13364 | return 0; |
13365 | ||
348d480f PA |
13366 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
13367 | aspace, bp_addr)) | |
13368 | return 0; | |
13369 | ||
13370 | if (overlay_debugging /* unmapped overlay section */ | |
13371 | && section_is_overlay (bl->section) | |
13372 | && !section_is_mapped (bl->section)) | |
13373 | return 0; | |
13374 | ||
13375 | return 1; | |
13376 | } | |
13377 | ||
cd1608cc PA |
13378 | static int |
13379 | dprintf_breakpoint_hit (const struct bp_location *bl, | |
13380 | struct address_space *aspace, CORE_ADDR bp_addr, | |
13381 | const struct target_waitstatus *ws) | |
13382 | { | |
13383 | if (dprintf_style == dprintf_style_agent | |
13384 | && target_can_run_breakpoint_commands ()) | |
13385 | { | |
13386 | /* An agent-style dprintf never causes a stop. If we see a trap | |
13387 | for this address it must be for a breakpoint that happens to | |
13388 | be set at the same address. */ | |
13389 | return 0; | |
13390 | } | |
13391 | ||
13392 | return bkpt_breakpoint_hit (bl, aspace, bp_addr, ws); | |
13393 | } | |
13394 | ||
2060206e | 13395 | static int |
348d480f PA |
13396 | bkpt_resources_needed (const struct bp_location *bl) |
13397 | { | |
13398 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
13399 | ||
13400 | return 1; | |
13401 | } | |
13402 | ||
2060206e | 13403 | static enum print_stop_action |
348d480f PA |
13404 | bkpt_print_it (bpstat bs) |
13405 | { | |
348d480f PA |
13406 | struct breakpoint *b; |
13407 | const struct bp_location *bl; | |
001c8c33 | 13408 | int bp_temp; |
79a45e25 | 13409 | struct ui_out *uiout = current_uiout; |
348d480f PA |
13410 | |
13411 | gdb_assert (bs->bp_location_at != NULL); | |
13412 | ||
13413 | bl = bs->bp_location_at; | |
13414 | b = bs->breakpoint_at; | |
13415 | ||
001c8c33 PA |
13416 | bp_temp = b->disposition == disp_del; |
13417 | if (bl->address != bl->requested_address) | |
13418 | breakpoint_adjustment_warning (bl->requested_address, | |
13419 | bl->address, | |
13420 | b->number, 1); | |
13421 | annotate_breakpoint (b->number); | |
13422 | if (bp_temp) | |
13423 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
13424 | else | |
13425 | ui_out_text (uiout, "\nBreakpoint "); | |
13426 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 13427 | { |
001c8c33 PA |
13428 | ui_out_field_string (uiout, "reason", |
13429 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
13430 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 13431 | } |
001c8c33 PA |
13432 | ui_out_field_int (uiout, "bkptno", b->number); |
13433 | ui_out_text (uiout, ", "); | |
06edf0c0 | 13434 | |
001c8c33 | 13435 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
13436 | } |
13437 | ||
2060206e | 13438 | static void |
06edf0c0 PA |
13439 | bkpt_print_mention (struct breakpoint *b) |
13440 | { | |
79a45e25 | 13441 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
13442 | return; |
13443 | ||
13444 | switch (b->type) | |
13445 | { | |
13446 | case bp_breakpoint: | |
13447 | case bp_gnu_ifunc_resolver: | |
13448 | if (b->disposition == disp_del) | |
13449 | printf_filtered (_("Temporary breakpoint")); | |
13450 | else | |
13451 | printf_filtered (_("Breakpoint")); | |
13452 | printf_filtered (_(" %d"), b->number); | |
13453 | if (b->type == bp_gnu_ifunc_resolver) | |
13454 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
13455 | break; | |
13456 | case bp_hardware_breakpoint: | |
13457 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
13458 | break; | |
e7e0cddf SS |
13459 | case bp_dprintf: |
13460 | printf_filtered (_("Dprintf %d"), b->number); | |
13461 | break; | |
06edf0c0 PA |
13462 | } |
13463 | ||
13464 | say_where (b); | |
13465 | } | |
13466 | ||
2060206e | 13467 | static void |
06edf0c0 PA |
13468 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
13469 | { | |
13470 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
13471 | fprintf_unfiltered (fp, "tbreak"); | |
13472 | else if (tp->type == bp_breakpoint) | |
13473 | fprintf_unfiltered (fp, "break"); | |
13474 | else if (tp->type == bp_hardware_breakpoint | |
13475 | && tp->disposition == disp_del) | |
13476 | fprintf_unfiltered (fp, "thbreak"); | |
13477 | else if (tp->type == bp_hardware_breakpoint) | |
13478 | fprintf_unfiltered (fp, "hbreak"); | |
13479 | else | |
13480 | internal_error (__FILE__, __LINE__, | |
13481 | _("unhandled breakpoint type %d"), (int) tp->type); | |
13482 | ||
2060206e | 13483 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 13484 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
13485 | } |
13486 | ||
983af33b SDJ |
13487 | static void |
13488 | bkpt_create_sals_from_address (char **arg, | |
13489 | struct linespec_result *canonical, | |
13490 | enum bptype type_wanted, | |
13491 | char *addr_start, char **copy_arg) | |
13492 | { | |
13493 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13494 | addr_start, copy_arg); | |
13495 | } | |
13496 | ||
13497 | static void | |
13498 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13499 | struct linespec_result *canonical, | |
983af33b | 13500 | char *cond_string, |
e7e0cddf | 13501 | char *extra_string, |
983af33b SDJ |
13502 | enum bptype type_wanted, |
13503 | enum bpdisp disposition, | |
13504 | int thread, | |
13505 | int task, int ignore_count, | |
13506 | const struct breakpoint_ops *ops, | |
13507 | int from_tty, int enabled, | |
44f238bb | 13508 | int internal, unsigned flags) |
983af33b | 13509 | { |
023fa29b | 13510 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13511 | cond_string, extra_string, |
13512 | type_wanted, | |
983af33b SDJ |
13513 | disposition, thread, task, |
13514 | ignore_count, ops, from_tty, | |
44f238bb | 13515 | enabled, internal, flags); |
983af33b SDJ |
13516 | } |
13517 | ||
13518 | static void | |
13519 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
13520 | struct symtabs_and_lines *sals) | |
13521 | { | |
13522 | decode_linespec_default (b, s, sals); | |
13523 | } | |
13524 | ||
06edf0c0 PA |
13525 | /* Virtual table for internal breakpoints. */ |
13526 | ||
13527 | static void | |
13528 | internal_bkpt_re_set (struct breakpoint *b) | |
13529 | { | |
13530 | switch (b->type) | |
13531 | { | |
13532 | /* Delete overlay event and longjmp master breakpoints; they | |
13533 | will be reset later by breakpoint_re_set. */ | |
13534 | case bp_overlay_event: | |
13535 | case bp_longjmp_master: | |
13536 | case bp_std_terminate_master: | |
13537 | case bp_exception_master: | |
13538 | delete_breakpoint (b); | |
13539 | break; | |
13540 | ||
13541 | /* This breakpoint is special, it's set up when the inferior | |
13542 | starts and we really don't want to touch it. */ | |
13543 | case bp_shlib_event: | |
13544 | ||
13545 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13546 | it is set up, we do not want to touch it. */ | |
13547 | case bp_thread_event: | |
13548 | break; | |
13549 | } | |
13550 | } | |
13551 | ||
13552 | static void | |
13553 | internal_bkpt_check_status (bpstat bs) | |
13554 | { | |
a9b3a50f PA |
13555 | if (bs->breakpoint_at->type == bp_shlib_event) |
13556 | { | |
13557 | /* If requested, stop when the dynamic linker notifies GDB of | |
13558 | events. This allows the user to get control and place | |
13559 | breakpoints in initializer routines for dynamically loaded | |
13560 | objects (among other things). */ | |
13561 | bs->stop = stop_on_solib_events; | |
13562 | bs->print = stop_on_solib_events; | |
13563 | } | |
13564 | else | |
13565 | bs->stop = 0; | |
06edf0c0 PA |
13566 | } |
13567 | ||
13568 | static enum print_stop_action | |
13569 | internal_bkpt_print_it (bpstat bs) | |
13570 | { | |
06edf0c0 | 13571 | struct breakpoint *b; |
06edf0c0 | 13572 | |
06edf0c0 PA |
13573 | b = bs->breakpoint_at; |
13574 | ||
06edf0c0 PA |
13575 | switch (b->type) |
13576 | { | |
348d480f PA |
13577 | case bp_shlib_event: |
13578 | /* Did we stop because the user set the stop_on_solib_events | |
13579 | variable? (If so, we report this as a generic, "Stopped due | |
13580 | to shlib event" message.) */ | |
edcc5120 | 13581 | print_solib_event (0); |
348d480f PA |
13582 | break; |
13583 | ||
13584 | case bp_thread_event: | |
13585 | /* Not sure how we will get here. | |
13586 | GDB should not stop for these breakpoints. */ | |
13587 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13588 | break; |
13589 | ||
13590 | case bp_overlay_event: | |
13591 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13592 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13593 | break; |
13594 | ||
13595 | case bp_longjmp_master: | |
13596 | /* These should never be enabled. */ | |
13597 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13598 | break; |
13599 | ||
13600 | case bp_std_terminate_master: | |
13601 | /* These should never be enabled. */ | |
13602 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13603 | "gdb should not stop!\n")); | |
348d480f PA |
13604 | break; |
13605 | ||
13606 | case bp_exception_master: | |
13607 | /* These should never be enabled. */ | |
13608 | printf_filtered (_("Exception Master Breakpoint: " | |
13609 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13610 | break; |
13611 | } | |
13612 | ||
001c8c33 | 13613 | return PRINT_NOTHING; |
06edf0c0 PA |
13614 | } |
13615 | ||
13616 | static void | |
13617 | internal_bkpt_print_mention (struct breakpoint *b) | |
13618 | { | |
13619 | /* Nothing to mention. These breakpoints are internal. */ | |
13620 | } | |
13621 | ||
06edf0c0 PA |
13622 | /* Virtual table for momentary breakpoints */ |
13623 | ||
13624 | static void | |
13625 | momentary_bkpt_re_set (struct breakpoint *b) | |
13626 | { | |
13627 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 13628 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
13629 | Otherwise these should have been blown away via the cleanup chain |
13630 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13631 | } | |
13632 | ||
13633 | static void | |
13634 | momentary_bkpt_check_status (bpstat bs) | |
13635 | { | |
13636 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13637 | } | |
13638 | ||
13639 | static enum print_stop_action | |
13640 | momentary_bkpt_print_it (bpstat bs) | |
13641 | { | |
79a45e25 PA |
13642 | struct ui_out *uiout = current_uiout; |
13643 | ||
001c8c33 | 13644 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13645 | { |
001c8c33 | 13646 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13647 | |
001c8c33 PA |
13648 | switch (b->type) |
13649 | { | |
13650 | case bp_finish: | |
13651 | ui_out_field_string | |
13652 | (uiout, "reason", | |
13653 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13654 | break; | |
348d480f | 13655 | |
001c8c33 PA |
13656 | case bp_until: |
13657 | ui_out_field_string | |
13658 | (uiout, "reason", | |
13659 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13660 | break; | |
13661 | } | |
348d480f PA |
13662 | } |
13663 | ||
001c8c33 | 13664 | return PRINT_UNKNOWN; |
348d480f PA |
13665 | } |
13666 | ||
06edf0c0 PA |
13667 | static void |
13668 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13669 | { |
06edf0c0 | 13670 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13671 | } |
13672 | ||
e2e4d78b JK |
13673 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13674 | ||
13675 | It gets cleared already on the removal of the first one of such placed | |
13676 | breakpoints. This is OK as they get all removed altogether. */ | |
13677 | ||
13678 | static void | |
13679 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13680 | { | |
13681 | struct thread_info *tp = find_thread_id (self->thread); | |
13682 | ||
13683 | if (tp) | |
13684 | tp->initiating_frame = null_frame_id; | |
13685 | ||
13686 | momentary_breakpoint_ops.dtor (self); | |
13687 | } | |
13688 | ||
55aa24fb SDJ |
13689 | /* Specific methods for probe breakpoints. */ |
13690 | ||
13691 | static int | |
13692 | bkpt_probe_insert_location (struct bp_location *bl) | |
13693 | { | |
13694 | int v = bkpt_insert_location (bl); | |
13695 | ||
13696 | if (v == 0) | |
13697 | { | |
13698 | /* The insertion was successful, now let's set the probe's semaphore | |
13699 | if needed. */ | |
729662a5 TT |
13700 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, |
13701 | bl->probe.objfile, | |
13702 | bl->gdbarch); | |
55aa24fb SDJ |
13703 | } |
13704 | ||
13705 | return v; | |
13706 | } | |
13707 | ||
13708 | static int | |
13709 | bkpt_probe_remove_location (struct bp_location *bl) | |
13710 | { | |
13711 | /* Let's clear the semaphore before removing the location. */ | |
729662a5 TT |
13712 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, |
13713 | bl->probe.objfile, | |
13714 | bl->gdbarch); | |
55aa24fb SDJ |
13715 | |
13716 | return bkpt_remove_location (bl); | |
13717 | } | |
13718 | ||
13719 | static void | |
13720 | bkpt_probe_create_sals_from_address (char **arg, | |
13721 | struct linespec_result *canonical, | |
13722 | enum bptype type_wanted, | |
13723 | char *addr_start, char **copy_arg) | |
13724 | { | |
13725 | struct linespec_sals lsal; | |
13726 | ||
13727 | lsal.sals = parse_probes (arg, canonical); | |
13728 | ||
13729 | *copy_arg = xstrdup (canonical->addr_string); | |
13730 | lsal.canonical = xstrdup (*copy_arg); | |
13731 | ||
13732 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13733 | } | |
13734 | ||
13735 | static void | |
13736 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
13737 | struct symtabs_and_lines *sals) | |
13738 | { | |
13739 | *sals = parse_probes (s, NULL); | |
13740 | if (!sals->sals) | |
13741 | error (_("probe not found")); | |
13742 | } | |
13743 | ||
348d480f | 13744 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13745 | |
348d480f PA |
13746 | static void |
13747 | tracepoint_re_set (struct breakpoint *b) | |
13748 | { | |
13749 | breakpoint_re_set_default (b); | |
13750 | } | |
876fa593 | 13751 | |
348d480f PA |
13752 | static int |
13753 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13754 | struct address_space *aspace, CORE_ADDR bp_addr, |
13755 | const struct target_waitstatus *ws) | |
348d480f PA |
13756 | { |
13757 | /* By definition, the inferior does not report stops at | |
13758 | tracepoints. */ | |
13759 | return 0; | |
74960c60 VP |
13760 | } |
13761 | ||
13762 | static void | |
348d480f PA |
13763 | tracepoint_print_one_detail (const struct breakpoint *self, |
13764 | struct ui_out *uiout) | |
74960c60 | 13765 | { |
d9b3f62e PA |
13766 | struct tracepoint *tp = (struct tracepoint *) self; |
13767 | if (tp->static_trace_marker_id) | |
348d480f PA |
13768 | { |
13769 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13770 | |
348d480f PA |
13771 | ui_out_text (uiout, "\tmarker id is "); |
13772 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13773 | tp->static_trace_marker_id); |
348d480f PA |
13774 | ui_out_text (uiout, "\n"); |
13775 | } | |
0d381245 VP |
13776 | } |
13777 | ||
a474d7c2 | 13778 | static void |
348d480f | 13779 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13780 | { |
79a45e25 | 13781 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13782 | return; |
cc59ec59 | 13783 | |
348d480f PA |
13784 | switch (b->type) |
13785 | { | |
13786 | case bp_tracepoint: | |
13787 | printf_filtered (_("Tracepoint")); | |
13788 | printf_filtered (_(" %d"), b->number); | |
13789 | break; | |
13790 | case bp_fast_tracepoint: | |
13791 | printf_filtered (_("Fast tracepoint")); | |
13792 | printf_filtered (_(" %d"), b->number); | |
13793 | break; | |
13794 | case bp_static_tracepoint: | |
13795 | printf_filtered (_("Static tracepoint")); | |
13796 | printf_filtered (_(" %d"), b->number); | |
13797 | break; | |
13798 | default: | |
13799 | internal_error (__FILE__, __LINE__, | |
13800 | _("unhandled tracepoint type %d"), (int) b->type); | |
13801 | } | |
13802 | ||
13803 | say_where (b); | |
a474d7c2 PA |
13804 | } |
13805 | ||
348d480f | 13806 | static void |
d9b3f62e | 13807 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13808 | { |
d9b3f62e PA |
13809 | struct tracepoint *tp = (struct tracepoint *) self; |
13810 | ||
13811 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13812 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13813 | if (self->type == bp_static_tracepoint) |
348d480f | 13814 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13815 | else if (self->type == bp_tracepoint) |
348d480f PA |
13816 | fprintf_unfiltered (fp, "trace"); |
13817 | else | |
13818 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13819 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13820 | |
d9b3f62e PA |
13821 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13822 | print_recreate_thread (self, fp); | |
13823 | ||
13824 | if (tp->pass_count) | |
13825 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13826 | } |
13827 | ||
983af33b SDJ |
13828 | static void |
13829 | tracepoint_create_sals_from_address (char **arg, | |
13830 | struct linespec_result *canonical, | |
13831 | enum bptype type_wanted, | |
13832 | char *addr_start, char **copy_arg) | |
13833 | { | |
13834 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13835 | addr_start, copy_arg); | |
13836 | } | |
13837 | ||
13838 | static void | |
13839 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13840 | struct linespec_result *canonical, | |
983af33b | 13841 | char *cond_string, |
e7e0cddf | 13842 | char *extra_string, |
983af33b SDJ |
13843 | enum bptype type_wanted, |
13844 | enum bpdisp disposition, | |
13845 | int thread, | |
13846 | int task, int ignore_count, | |
13847 | const struct breakpoint_ops *ops, | |
13848 | int from_tty, int enabled, | |
44f238bb | 13849 | int internal, unsigned flags) |
983af33b | 13850 | { |
023fa29b | 13851 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13852 | cond_string, extra_string, |
13853 | type_wanted, | |
983af33b SDJ |
13854 | disposition, thread, task, |
13855 | ignore_count, ops, from_tty, | |
44f238bb | 13856 | enabled, internal, flags); |
983af33b SDJ |
13857 | } |
13858 | ||
13859 | static void | |
13860 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13861 | struct symtabs_and_lines *sals) | |
13862 | { | |
13863 | decode_linespec_default (b, s, sals); | |
13864 | } | |
13865 | ||
2060206e | 13866 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13867 | |
55aa24fb SDJ |
13868 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13869 | static probe. */ | |
13870 | ||
13871 | static void | |
13872 | tracepoint_probe_create_sals_from_address (char **arg, | |
13873 | struct linespec_result *canonical, | |
13874 | enum bptype type_wanted, | |
13875 | char *addr_start, char **copy_arg) | |
13876 | { | |
13877 | /* We use the same method for breakpoint on probes. */ | |
13878 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13879 | addr_start, copy_arg); | |
13880 | } | |
13881 | ||
13882 | static void | |
13883 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13884 | struct symtabs_and_lines *sals) | |
13885 | { | |
13886 | /* We use the same method for breakpoint on probes. */ | |
13887 | bkpt_probe_decode_linespec (b, s, sals); | |
13888 | } | |
13889 | ||
13890 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13891 | ||
5c2b4418 HZ |
13892 | /* Dprintf breakpoint_ops methods. */ |
13893 | ||
13894 | static void | |
13895 | dprintf_re_set (struct breakpoint *b) | |
13896 | { | |
13897 | breakpoint_re_set_default (b); | |
13898 | ||
13899 | /* This breakpoint could have been pending, and be resolved now, and | |
13900 | if so, we should now have the extra string. If we don't, the | |
13901 | dprintf was malformed when created, but we couldn't tell because | |
13902 | we can't extract the extra string until the location is | |
13903 | resolved. */ | |
13904 | if (b->loc != NULL && b->extra_string == NULL) | |
13905 | error (_("Format string required")); | |
13906 | ||
13907 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13908 | 2 - create a dprintf, which resolves fine. | |
13909 | 3 - disconnect from target 1 | |
13910 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13911 | ||
13912 | After steps #3/#4, you'll want the dprintf command list to | |
13913 | be updated, because target 1 and 2 may well return different | |
13914 | answers for target_can_run_breakpoint_commands(). | |
13915 | Given absence of finer grained resetting, we get to do | |
13916 | it all the time. */ | |
13917 | if (b->extra_string != NULL) | |
13918 | update_dprintf_command_list (b); | |
13919 | } | |
13920 | ||
2d9442cc HZ |
13921 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13922 | ||
13923 | static void | |
13924 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13925 | { | |
13926 | fprintf_unfiltered (fp, "dprintf %s%s", tp->addr_string, | |
13927 | tp->extra_string); | |
13928 | print_recreate_thread (tp, fp); | |
13929 | } | |
13930 | ||
9d6e6e84 HZ |
13931 | /* Implement the "after_condition_true" breakpoint_ops method for |
13932 | dprintf. | |
13933 | ||
13934 | dprintf's are implemented with regular commands in their command | |
13935 | list, but we run the commands here instead of before presenting the | |
13936 | stop to the user, as dprintf's don't actually cause a stop. This | |
13937 | also makes it so that the commands of multiple dprintfs at the same | |
13938 | address are all handled. */ | |
13939 | ||
13940 | static void | |
13941 | dprintf_after_condition_true (struct bpstats *bs) | |
13942 | { | |
13943 | struct cleanup *old_chain; | |
13944 | struct bpstats tmp_bs = { NULL }; | |
13945 | struct bpstats *tmp_bs_p = &tmp_bs; | |
13946 | ||
13947 | /* dprintf's never cause a stop. This wasn't set in the | |
13948 | check_status hook instead because that would make the dprintf's | |
13949 | condition not be evaluated. */ | |
13950 | bs->stop = 0; | |
13951 | ||
13952 | /* Run the command list here. Take ownership of it instead of | |
13953 | copying. We never want these commands to run later in | |
13954 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13955 | be set at same address as this dprintf, or even if running the | |
13956 | commands here throws. */ | |
13957 | tmp_bs.commands = bs->commands; | |
13958 | bs->commands = NULL; | |
13959 | old_chain = make_cleanup_decref_counted_command_line (&tmp_bs.commands); | |
13960 | ||
13961 | bpstat_do_actions_1 (&tmp_bs_p); | |
13962 | ||
13963 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13964 | bpstat_do_actions_1 may return early without processing the whole | |
13965 | list. */ | |
13966 | do_cleanups (old_chain); | |
13967 | } | |
13968 | ||
983af33b SDJ |
13969 | /* The breakpoint_ops structure to be used on static tracepoints with |
13970 | markers (`-m'). */ | |
13971 | ||
13972 | static void | |
13973 | strace_marker_create_sals_from_address (char **arg, | |
13974 | struct linespec_result *canonical, | |
13975 | enum bptype type_wanted, | |
13976 | char *addr_start, char **copy_arg) | |
13977 | { | |
13978 | struct linespec_sals lsal; | |
13979 | ||
13980 | lsal.sals = decode_static_tracepoint_spec (arg); | |
13981 | ||
13982 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
13983 | ||
13984 | canonical->addr_string = xstrdup (*copy_arg); | |
13985 | lsal.canonical = xstrdup (*copy_arg); | |
13986 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13987 | } | |
13988 | ||
13989 | static void | |
13990 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13991 | struct linespec_result *canonical, | |
983af33b | 13992 | char *cond_string, |
e7e0cddf | 13993 | char *extra_string, |
983af33b SDJ |
13994 | enum bptype type_wanted, |
13995 | enum bpdisp disposition, | |
13996 | int thread, | |
13997 | int task, int ignore_count, | |
13998 | const struct breakpoint_ops *ops, | |
13999 | int from_tty, int enabled, | |
44f238bb | 14000 | int internal, unsigned flags) |
983af33b SDJ |
14001 | { |
14002 | int i; | |
52d361e1 YQ |
14003 | struct linespec_sals *lsal = VEC_index (linespec_sals, |
14004 | canonical->sals, 0); | |
983af33b SDJ |
14005 | |
14006 | /* If the user is creating a static tracepoint by marker id | |
14007 | (strace -m MARKER_ID), then store the sals index, so that | |
14008 | breakpoint_re_set can try to match up which of the newly | |
14009 | found markers corresponds to this one, and, don't try to | |
14010 | expand multiple locations for each sal, given than SALS | |
14011 | already should contain all sals for MARKER_ID. */ | |
14012 | ||
14013 | for (i = 0; i < lsal->sals.nelts; ++i) | |
14014 | { | |
14015 | struct symtabs_and_lines expanded; | |
14016 | struct tracepoint *tp; | |
14017 | struct cleanup *old_chain; | |
14018 | char *addr_string; | |
14019 | ||
14020 | expanded.nelts = 1; | |
14021 | expanded.sals = &lsal->sals.sals[i]; | |
14022 | ||
14023 | addr_string = xstrdup (canonical->addr_string); | |
14024 | old_chain = make_cleanup (xfree, addr_string); | |
14025 | ||
14026 | tp = XCNEW (struct tracepoint); | |
14027 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
14028 | addr_string, NULL, | |
e7e0cddf SS |
14029 | cond_string, extra_string, |
14030 | type_wanted, disposition, | |
983af33b | 14031 | thread, task, ignore_count, ops, |
44f238bb | 14032 | from_tty, enabled, internal, flags, |
983af33b SDJ |
14033 | canonical->special_display); |
14034 | /* Given that its possible to have multiple markers with | |
14035 | the same string id, if the user is creating a static | |
14036 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
14037 | store the sals index, so that breakpoint_re_set can | |
14038 | try to match up which of the newly found markers | |
14039 | corresponds to this one */ | |
14040 | tp->static_trace_marker_id_idx = i; | |
14041 | ||
14042 | install_breakpoint (internal, &tp->base, 0); | |
14043 | ||
14044 | discard_cleanups (old_chain); | |
14045 | } | |
14046 | } | |
14047 | ||
14048 | static void | |
14049 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
14050 | struct symtabs_and_lines *sals) | |
14051 | { | |
14052 | struct tracepoint *tp = (struct tracepoint *) b; | |
14053 | ||
14054 | *sals = decode_static_tracepoint_spec (s); | |
14055 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
14056 | { | |
14057 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
14058 | sals->nelts = 1; | |
14059 | } | |
14060 | else | |
14061 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
14062 | } | |
14063 | ||
14064 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
14065 | ||
14066 | static int | |
14067 | strace_marker_p (struct breakpoint *b) | |
14068 | { | |
14069 | return b->ops == &strace_marker_breakpoint_ops; | |
14070 | } | |
14071 | ||
53a5351d | 14072 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 14073 | structures. */ |
c906108c SS |
14074 | |
14075 | void | |
fba45db2 | 14076 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 14077 | { |
52f0bd74 | 14078 | struct breakpoint *b; |
c906108c | 14079 | |
8a3fe4f8 | 14080 | gdb_assert (bpt != NULL); |
c906108c | 14081 | |
4a64f543 MS |
14082 | /* Has this bp already been deleted? This can happen because |
14083 | multiple lists can hold pointers to bp's. bpstat lists are | |
14084 | especial culprits. | |
14085 | ||
14086 | One example of this happening is a watchpoint's scope bp. When | |
14087 | the scope bp triggers, we notice that the watchpoint is out of | |
14088 | scope, and delete it. We also delete its scope bp. But the | |
14089 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
14090 | That bpstat is then checked for auto-deleting bp's, which are | |
14091 | deleted. | |
14092 | ||
14093 | A real solution to this problem might involve reference counts in | |
14094 | bp's, and/or giving them pointers back to their referencing | |
14095 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
14096 | storage when no more references were extent. A cheaper bandaid | |
14097 | was chosen. */ | |
c906108c SS |
14098 | if (bpt->type == bp_none) |
14099 | return; | |
14100 | ||
4a64f543 MS |
14101 | /* At least avoid this stale reference until the reference counting |
14102 | of breakpoints gets resolved. */ | |
d0fb5eae | 14103 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 14104 | { |
d0fb5eae | 14105 | struct breakpoint *related; |
3a5c3e22 | 14106 | struct watchpoint *w; |
d0fb5eae JK |
14107 | |
14108 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 14109 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 14110 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
14111 | w = (struct watchpoint *) bpt; |
14112 | else | |
14113 | w = NULL; | |
14114 | if (w != NULL) | |
14115 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
14116 | |
14117 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
14118 | for (related = bpt; related->related_breakpoint != bpt; | |
14119 | related = related->related_breakpoint); | |
14120 | related->related_breakpoint = bpt->related_breakpoint; | |
14121 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
14122 | } |
14123 | ||
a9634178 TJB |
14124 | /* watch_command_1 creates a watchpoint but only sets its number if |
14125 | update_watchpoint succeeds in creating its bp_locations. If there's | |
14126 | a problem in that process, we'll be asked to delete the half-created | |
14127 | watchpoint. In that case, don't announce the deletion. */ | |
14128 | if (bpt->number) | |
14129 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 14130 | |
c906108c SS |
14131 | if (breakpoint_chain == bpt) |
14132 | breakpoint_chain = bpt->next; | |
14133 | ||
c906108c SS |
14134 | ALL_BREAKPOINTS (b) |
14135 | if (b->next == bpt) | |
c5aa993b JM |
14136 | { |
14137 | b->next = bpt->next; | |
14138 | break; | |
14139 | } | |
c906108c | 14140 | |
f431efe5 PA |
14141 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
14142 | been freed. */ | |
14143 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 14144 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
14145 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
14146 | commands are associated with the bpstat; if we remove it here, | |
14147 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
14148 | event-top.c won't do anything, and temporary breakpoints with | |
14149 | commands won't work. */ | |
14150 | ||
14151 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
14152 | ||
4a64f543 MS |
14153 | /* Now that breakpoint is removed from breakpoint list, update the |
14154 | global location list. This will remove locations that used to | |
14155 | belong to this breakpoint. Do this before freeing the breakpoint | |
14156 | itself, since remove_breakpoint looks at location's owner. It | |
14157 | might be better design to have location completely | |
14158 | self-contained, but it's not the case now. */ | |
44702360 | 14159 | update_global_location_list (UGLL_DONT_INSERT); |
74960c60 | 14160 | |
348d480f | 14161 | bpt->ops->dtor (bpt); |
4a64f543 MS |
14162 | /* On the chance that someone will soon try again to delete this |
14163 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 14164 | bpt->type = bp_none; |
b8c9b27d | 14165 | xfree (bpt); |
c906108c SS |
14166 | } |
14167 | ||
4d6140d9 AC |
14168 | static void |
14169 | do_delete_breakpoint_cleanup (void *b) | |
14170 | { | |
14171 | delete_breakpoint (b); | |
14172 | } | |
14173 | ||
14174 | struct cleanup * | |
14175 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
14176 | { | |
14177 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
14178 | } | |
14179 | ||
51be5b68 PA |
14180 | /* Iterator function to call a user-provided callback function once |
14181 | for each of B and its related breakpoints. */ | |
14182 | ||
14183 | static void | |
14184 | iterate_over_related_breakpoints (struct breakpoint *b, | |
14185 | void (*function) (struct breakpoint *, | |
14186 | void *), | |
14187 | void *data) | |
14188 | { | |
14189 | struct breakpoint *related; | |
14190 | ||
14191 | related = b; | |
14192 | do | |
14193 | { | |
14194 | struct breakpoint *next; | |
14195 | ||
14196 | /* FUNCTION may delete RELATED. */ | |
14197 | next = related->related_breakpoint; | |
14198 | ||
14199 | if (next == related) | |
14200 | { | |
14201 | /* RELATED is the last ring entry. */ | |
14202 | function (related, data); | |
14203 | ||
14204 | /* FUNCTION may have deleted it, so we'd never reach back to | |
14205 | B. There's nothing left to do anyway, so just break | |
14206 | out. */ | |
14207 | break; | |
14208 | } | |
14209 | else | |
14210 | function (related, data); | |
14211 | ||
14212 | related = next; | |
14213 | } | |
14214 | while (related != b); | |
14215 | } | |
95a42b64 TT |
14216 | |
14217 | static void | |
14218 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
14219 | { | |
14220 | delete_breakpoint (b); | |
14221 | } | |
14222 | ||
51be5b68 PA |
14223 | /* A callback for map_breakpoint_numbers that calls |
14224 | delete_breakpoint. */ | |
14225 | ||
14226 | static void | |
14227 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
14228 | { | |
14229 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
14230 | } | |
14231 | ||
c906108c | 14232 | void |
fba45db2 | 14233 | delete_command (char *arg, int from_tty) |
c906108c | 14234 | { |
35df4500 | 14235 | struct breakpoint *b, *b_tmp; |
c906108c | 14236 | |
ea9365bb TT |
14237 | dont_repeat (); |
14238 | ||
c906108c SS |
14239 | if (arg == 0) |
14240 | { | |
14241 | int breaks_to_delete = 0; | |
14242 | ||
46c6471b PA |
14243 | /* Delete all breakpoints if no argument. Do not delete |
14244 | internal breakpoints, these have to be deleted with an | |
14245 | explicit breakpoint number argument. */ | |
c5aa993b | 14246 | ALL_BREAKPOINTS (b) |
46c6471b | 14247 | if (user_breakpoint_p (b)) |
973d738b DJ |
14248 | { |
14249 | breaks_to_delete = 1; | |
14250 | break; | |
14251 | } | |
c906108c SS |
14252 | |
14253 | /* Ask user only if there are some breakpoints to delete. */ | |
14254 | if (!from_tty | |
e2e0b3e5 | 14255 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 14256 | { |
35df4500 | 14257 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 14258 | if (user_breakpoint_p (b)) |
c5aa993b | 14259 | delete_breakpoint (b); |
c906108c SS |
14260 | } |
14261 | } | |
14262 | else | |
51be5b68 | 14263 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
14264 | } |
14265 | ||
0d381245 VP |
14266 | static int |
14267 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 14268 | { |
0d381245 | 14269 | for (; loc; loc = loc->next) |
8645ff69 UW |
14270 | if (!loc->shlib_disabled |
14271 | && !loc->pspace->executing_startup) | |
0d381245 VP |
14272 | return 0; |
14273 | return 1; | |
fe3f5fa8 VP |
14274 | } |
14275 | ||
776592bf DE |
14276 | /* Subroutine of update_breakpoint_locations to simplify it. |
14277 | Return non-zero if multiple fns in list LOC have the same name. | |
14278 | Null names are ignored. */ | |
14279 | ||
14280 | static int | |
14281 | ambiguous_names_p (struct bp_location *loc) | |
14282 | { | |
14283 | struct bp_location *l; | |
14284 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
14285 | (int (*) (const void *, |
14286 | const void *)) streq, | |
776592bf DE |
14287 | NULL, xcalloc, xfree); |
14288 | ||
14289 | for (l = loc; l != NULL; l = l->next) | |
14290 | { | |
14291 | const char **slot; | |
14292 | const char *name = l->function_name; | |
14293 | ||
14294 | /* Allow for some names to be NULL, ignore them. */ | |
14295 | if (name == NULL) | |
14296 | continue; | |
14297 | ||
14298 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
14299 | INSERT); | |
4a64f543 MS |
14300 | /* NOTE: We can assume slot != NULL here because xcalloc never |
14301 | returns NULL. */ | |
776592bf DE |
14302 | if (*slot != NULL) |
14303 | { | |
14304 | htab_delete (htab); | |
14305 | return 1; | |
14306 | } | |
14307 | *slot = name; | |
14308 | } | |
14309 | ||
14310 | htab_delete (htab); | |
14311 | return 0; | |
14312 | } | |
14313 | ||
0fb4aa4b PA |
14314 | /* When symbols change, it probably means the sources changed as well, |
14315 | and it might mean the static tracepoint markers are no longer at | |
14316 | the same address or line numbers they used to be at last we | |
14317 | checked. Losing your static tracepoints whenever you rebuild is | |
14318 | undesirable. This function tries to resync/rematch gdb static | |
14319 | tracepoints with the markers on the target, for static tracepoints | |
14320 | that have not been set by marker id. Static tracepoint that have | |
14321 | been set by marker id are reset by marker id in breakpoint_re_set. | |
14322 | The heuristic is: | |
14323 | ||
14324 | 1) For a tracepoint set at a specific address, look for a marker at | |
14325 | the old PC. If one is found there, assume to be the same marker. | |
14326 | If the name / string id of the marker found is different from the | |
14327 | previous known name, assume that means the user renamed the marker | |
14328 | in the sources, and output a warning. | |
14329 | ||
14330 | 2) For a tracepoint set at a given line number, look for a marker | |
14331 | at the new address of the old line number. If one is found there, | |
14332 | assume to be the same marker. If the name / string id of the | |
14333 | marker found is different from the previous known name, assume that | |
14334 | means the user renamed the marker in the sources, and output a | |
14335 | warning. | |
14336 | ||
14337 | 3) If a marker is no longer found at the same address or line, it | |
14338 | may mean the marker no longer exists. But it may also just mean | |
14339 | the code changed a bit. Maybe the user added a few lines of code | |
14340 | that made the marker move up or down (in line number terms). Ask | |
14341 | the target for info about the marker with the string id as we knew | |
14342 | it. If found, update line number and address in the matching | |
14343 | static tracepoint. This will get confused if there's more than one | |
14344 | marker with the same ID (possible in UST, although unadvised | |
14345 | precisely because it confuses tools). */ | |
14346 | ||
14347 | static struct symtab_and_line | |
14348 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
14349 | { | |
d9b3f62e | 14350 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
14351 | struct static_tracepoint_marker marker; |
14352 | CORE_ADDR pc; | |
0fb4aa4b PA |
14353 | |
14354 | pc = sal.pc; | |
14355 | if (sal.line) | |
14356 | find_line_pc (sal.symtab, sal.line, &pc); | |
14357 | ||
14358 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
14359 | { | |
d9b3f62e | 14360 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
14361 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
14362 | b->number, | |
d9b3f62e | 14363 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 14364 | |
d9b3f62e PA |
14365 | xfree (tp->static_trace_marker_id); |
14366 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
14367 | release_static_tracepoint_marker (&marker); |
14368 | ||
14369 | return sal; | |
14370 | } | |
14371 | ||
14372 | /* Old marker wasn't found on target at lineno. Try looking it up | |
14373 | by string ID. */ | |
14374 | if (!sal.explicit_pc | |
14375 | && sal.line != 0 | |
14376 | && sal.symtab != NULL | |
d9b3f62e | 14377 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
14378 | { |
14379 | VEC(static_tracepoint_marker_p) *markers; | |
14380 | ||
14381 | markers | |
d9b3f62e | 14382 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
14383 | |
14384 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
14385 | { | |
80e1d417 | 14386 | struct symtab_and_line sal2; |
0fb4aa4b | 14387 | struct symbol *sym; |
80e1d417 | 14388 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 14389 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 14390 | |
80e1d417 | 14391 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 14392 | |
d9b3f62e | 14393 | xfree (tp->static_trace_marker_id); |
80e1d417 | 14394 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
14395 | |
14396 | warning (_("marker for static tracepoint %d (%s) not " | |
14397 | "found at previous line number"), | |
d9b3f62e | 14398 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 14399 | |
80e1d417 | 14400 | init_sal (&sal2); |
0fb4aa4b | 14401 | |
80e1d417 | 14402 | sal2.pc = tpmarker->address; |
0fb4aa4b | 14403 | |
80e1d417 AS |
14404 | sal2 = find_pc_line (tpmarker->address, 0); |
14405 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
14406 | ui_out_text (uiout, "Now in "); |
14407 | if (sym) | |
14408 | { | |
14409 | ui_out_field_string (uiout, "func", | |
14410 | SYMBOL_PRINT_NAME (sym)); | |
14411 | ui_out_text (uiout, " at "); | |
14412 | } | |
05cba821 JK |
14413 | ui_out_field_string (uiout, "file", |
14414 | symtab_to_filename_for_display (sal2.symtab)); | |
0fb4aa4b PA |
14415 | ui_out_text (uiout, ":"); |
14416 | ||
14417 | if (ui_out_is_mi_like_p (uiout)) | |
14418 | { | |
0b0865da | 14419 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 14420 | |
f35a17b5 | 14421 | ui_out_field_string (uiout, "fullname", fullname); |
0fb4aa4b PA |
14422 | } |
14423 | ||
80e1d417 | 14424 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
14425 | ui_out_text (uiout, "\n"); |
14426 | ||
80e1d417 | 14427 | b->loc->line_number = sal2.line; |
2f202fde | 14428 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b PA |
14429 | |
14430 | xfree (b->addr_string); | |
14431 | b->addr_string = xstrprintf ("%s:%d", | |
05cba821 | 14432 | symtab_to_filename_for_display (sal2.symtab), |
f8eba3c6 | 14433 | b->loc->line_number); |
0fb4aa4b PA |
14434 | |
14435 | /* Might be nice to check if function changed, and warn if | |
14436 | so. */ | |
14437 | ||
80e1d417 | 14438 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
14439 | } |
14440 | } | |
14441 | return sal; | |
14442 | } | |
14443 | ||
8d3788bd VP |
14444 | /* Returns 1 iff locations A and B are sufficiently same that |
14445 | we don't need to report breakpoint as changed. */ | |
14446 | ||
14447 | static int | |
14448 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
14449 | { | |
14450 | while (a && b) | |
14451 | { | |
14452 | if (a->address != b->address) | |
14453 | return 0; | |
14454 | ||
14455 | if (a->shlib_disabled != b->shlib_disabled) | |
14456 | return 0; | |
14457 | ||
14458 | if (a->enabled != b->enabled) | |
14459 | return 0; | |
14460 | ||
14461 | a = a->next; | |
14462 | b = b->next; | |
14463 | } | |
14464 | ||
14465 | if ((a == NULL) != (b == NULL)) | |
14466 | return 0; | |
14467 | ||
14468 | return 1; | |
14469 | } | |
14470 | ||
f1310107 TJB |
14471 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
14472 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
14473 | a ranged breakpoint. */ | |
14474 | ||
0e30163f | 14475 | void |
0d381245 | 14476 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
14477 | struct symtabs_and_lines sals, |
14478 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
14479 | { |
14480 | int i; | |
0d381245 VP |
14481 | struct bp_location *existing_locations = b->loc; |
14482 | ||
f8eba3c6 TT |
14483 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
14484 | { | |
14485 | /* Ranged breakpoints have only one start location and one end | |
14486 | location. */ | |
14487 | b->enable_state = bp_disabled; | |
44702360 | 14488 | update_global_location_list (UGLL_MAY_INSERT); |
f8eba3c6 TT |
14489 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " |
14490 | "multiple locations found\n"), | |
14491 | b->number); | |
14492 | return; | |
14493 | } | |
f1310107 | 14494 | |
4a64f543 MS |
14495 | /* If there's no new locations, and all existing locations are |
14496 | pending, don't do anything. This optimizes the common case where | |
14497 | all locations are in the same shared library, that was unloaded. | |
14498 | We'd like to retain the location, so that when the library is | |
14499 | loaded again, we don't loose the enabled/disabled status of the | |
14500 | individual locations. */ | |
0d381245 | 14501 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
14502 | return; |
14503 | ||
fe3f5fa8 VP |
14504 | b->loc = NULL; |
14505 | ||
0d381245 | 14506 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 14507 | { |
f8eba3c6 TT |
14508 | struct bp_location *new_loc; |
14509 | ||
14510 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
14511 | ||
14512 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 14513 | |
0d381245 VP |
14514 | /* Reparse conditions, they might contain references to the |
14515 | old symtab. */ | |
14516 | if (b->cond_string != NULL) | |
14517 | { | |
bbc13ae3 | 14518 | const char *s; |
bfd189b1 | 14519 | volatile struct gdb_exception e; |
fe3f5fa8 | 14520 | |
0d381245 VP |
14521 | s = b->cond_string; |
14522 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14523 | { | |
1bb9788d TT |
14524 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
14525 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
14526 | 0); |
14527 | } | |
14528 | if (e.reason < 0) | |
14529 | { | |
3e43a32a MS |
14530 | warning (_("failed to reevaluate condition " |
14531 | "for breakpoint %d: %s"), | |
0d381245 VP |
14532 | b->number, e.message); |
14533 | new_loc->enabled = 0; | |
14534 | } | |
14535 | } | |
fe3f5fa8 | 14536 | |
f1310107 TJB |
14537 | if (sals_end.nelts) |
14538 | { | |
14539 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
14540 | ||
14541 | new_loc->length = end - sals.sals[0].pc + 1; | |
14542 | } | |
0d381245 | 14543 | } |
fe3f5fa8 | 14544 | |
514f746b AR |
14545 | /* Update locations of permanent breakpoints. */ |
14546 | if (b->enable_state == bp_permanent) | |
14547 | make_breakpoint_permanent (b); | |
14548 | ||
4a64f543 MS |
14549 | /* If possible, carry over 'disable' status from existing |
14550 | breakpoints. */ | |
0d381245 VP |
14551 | { |
14552 | struct bp_location *e = existing_locations; | |
776592bf DE |
14553 | /* If there are multiple breakpoints with the same function name, |
14554 | e.g. for inline functions, comparing function names won't work. | |
14555 | Instead compare pc addresses; this is just a heuristic as things | |
14556 | may have moved, but in practice it gives the correct answer | |
14557 | often enough until a better solution is found. */ | |
14558 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
14559 | ||
0d381245 VP |
14560 | for (; e; e = e->next) |
14561 | { | |
14562 | if (!e->enabled && e->function_name) | |
14563 | { | |
14564 | struct bp_location *l = b->loc; | |
776592bf DE |
14565 | if (have_ambiguous_names) |
14566 | { | |
14567 | for (; l; l = l->next) | |
f1310107 | 14568 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
14569 | { |
14570 | l->enabled = 0; | |
14571 | break; | |
14572 | } | |
14573 | } | |
14574 | else | |
14575 | { | |
14576 | for (; l; l = l->next) | |
14577 | if (l->function_name | |
14578 | && strcmp (e->function_name, l->function_name) == 0) | |
14579 | { | |
14580 | l->enabled = 0; | |
14581 | break; | |
14582 | } | |
14583 | } | |
0d381245 VP |
14584 | } |
14585 | } | |
14586 | } | |
fe3f5fa8 | 14587 | |
8d3788bd VP |
14588 | if (!locations_are_equal (existing_locations, b->loc)) |
14589 | observer_notify_breakpoint_modified (b); | |
14590 | ||
44702360 | 14591 | update_global_location_list (UGLL_MAY_INSERT); |
fe3f5fa8 VP |
14592 | } |
14593 | ||
ef23e705 TJB |
14594 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
14595 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
14596 | ||
14597 | static struct symtabs_and_lines | |
14598 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
14599 | { | |
14600 | char *s; | |
02d20e4a | 14601 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 14602 | volatile struct gdb_exception e; |
ef23e705 | 14603 | |
983af33b | 14604 | gdb_assert (b->ops != NULL); |
ef23e705 | 14605 | s = addr_string; |
ef23e705 TJB |
14606 | |
14607 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14608 | { | |
983af33b | 14609 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
14610 | } |
14611 | if (e.reason < 0) | |
14612 | { | |
14613 | int not_found_and_ok = 0; | |
14614 | /* For pending breakpoints, it's expected that parsing will | |
14615 | fail until the right shared library is loaded. User has | |
14616 | already told to create pending breakpoints and don't need | |
14617 | extra messages. If breakpoint is in bp_shlib_disabled | |
14618 | state, then user already saw the message about that | |
14619 | breakpoint being disabled, and don't want to see more | |
14620 | errors. */ | |
58438ac1 | 14621 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14622 | && (b->condition_not_parsed |
14623 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14624 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14625 | || b->enable_state == bp_disabled)) |
14626 | not_found_and_ok = 1; | |
14627 | ||
14628 | if (!not_found_and_ok) | |
14629 | { | |
14630 | /* We surely don't want to warn about the same breakpoint | |
14631 | 10 times. One solution, implemented here, is disable | |
14632 | the breakpoint on error. Another solution would be to | |
14633 | have separate 'warning emitted' flag. Since this | |
14634 | happens only when a binary has changed, I don't know | |
14635 | which approach is better. */ | |
14636 | b->enable_state = bp_disabled; | |
14637 | throw_exception (e); | |
14638 | } | |
14639 | } | |
14640 | ||
58438ac1 | 14641 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 14642 | { |
f8eba3c6 | 14643 | int i; |
ef23e705 | 14644 | |
f8eba3c6 TT |
14645 | for (i = 0; i < sals.nelts; ++i) |
14646 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
14647 | if (b->condition_not_parsed && s && s[0]) |
14648 | { | |
ed1d1739 KS |
14649 | char *cond_string, *extra_string; |
14650 | int thread, task; | |
ef23e705 TJB |
14651 | |
14652 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
14653 | &cond_string, &thread, &task, |
14654 | &extra_string); | |
ef23e705 TJB |
14655 | if (cond_string) |
14656 | b->cond_string = cond_string; | |
14657 | b->thread = thread; | |
14658 | b->task = task; | |
e7e0cddf SS |
14659 | if (extra_string) |
14660 | b->extra_string = extra_string; | |
ef23e705 TJB |
14661 | b->condition_not_parsed = 0; |
14662 | } | |
14663 | ||
983af33b | 14664 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14665 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14666 | |
58438ac1 TT |
14667 | *found = 1; |
14668 | } | |
14669 | else | |
14670 | *found = 0; | |
ef23e705 TJB |
14671 | |
14672 | return sals; | |
14673 | } | |
14674 | ||
348d480f PA |
14675 | /* The default re_set method, for typical hardware or software |
14676 | breakpoints. Reevaluate the breakpoint and recreate its | |
14677 | locations. */ | |
14678 | ||
14679 | static void | |
28010a5d | 14680 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14681 | { |
14682 | int found; | |
f1310107 | 14683 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14684 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14685 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
14686 | |
14687 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
14688 | if (found) | |
14689 | { | |
14690 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14691 | expanded = sals; |
ef23e705 TJB |
14692 | } |
14693 | ||
f1310107 TJB |
14694 | if (b->addr_string_range_end) |
14695 | { | |
14696 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
14697 | if (found) | |
14698 | { | |
14699 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14700 | expanded_end = sals_end; |
f1310107 TJB |
14701 | } |
14702 | } | |
14703 | ||
14704 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14705 | } |
14706 | ||
983af33b SDJ |
14707 | /* Default method for creating SALs from an address string. It basically |
14708 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14709 | ||
14710 | static void | |
14711 | create_sals_from_address_default (char **arg, | |
14712 | struct linespec_result *canonical, | |
14713 | enum bptype type_wanted, | |
14714 | char *addr_start, char **copy_arg) | |
14715 | { | |
14716 | parse_breakpoint_sals (arg, canonical); | |
14717 | } | |
14718 | ||
14719 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14720 | function for the `create_breakpoints_sal' method of | |
14721 | breakpoint_ops. */ | |
14722 | ||
14723 | static void | |
14724 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14725 | struct linespec_result *canonical, | |
983af33b | 14726 | char *cond_string, |
e7e0cddf | 14727 | char *extra_string, |
983af33b SDJ |
14728 | enum bptype type_wanted, |
14729 | enum bpdisp disposition, | |
14730 | int thread, | |
14731 | int task, int ignore_count, | |
14732 | const struct breakpoint_ops *ops, | |
14733 | int from_tty, int enabled, | |
44f238bb | 14734 | int internal, unsigned flags) |
983af33b SDJ |
14735 | { |
14736 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14737 | extra_string, |
983af33b SDJ |
14738 | type_wanted, disposition, |
14739 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14740 | enabled, internal, flags); |
983af33b SDJ |
14741 | } |
14742 | ||
14743 | /* Decode the line represented by S by calling decode_line_full. This is the | |
14744 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
14745 | ||
14746 | static void | |
14747 | decode_linespec_default (struct breakpoint *b, char **s, | |
14748 | struct symtabs_and_lines *sals) | |
14749 | { | |
14750 | struct linespec_result canonical; | |
14751 | ||
14752 | init_linespec_result (&canonical); | |
14753 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
14754 | (struct symtab *) NULL, 0, | |
14755 | &canonical, multiple_symbols_all, | |
14756 | b->filter); | |
14757 | ||
14758 | /* We should get 0 or 1 resulting SALs. */ | |
14759 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14760 | ||
14761 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14762 | { | |
14763 | struct linespec_sals *lsal; | |
14764 | ||
14765 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14766 | *sals = lsal->sals; | |
14767 | /* Arrange it so the destructor does not free the | |
14768 | contents. */ | |
14769 | lsal->sals.sals = NULL; | |
14770 | } | |
14771 | ||
14772 | destroy_linespec_result (&canonical); | |
14773 | } | |
14774 | ||
28010a5d PA |
14775 | /* Prepare the global context for a re-set of breakpoint B. */ |
14776 | ||
14777 | static struct cleanup * | |
14778 | prepare_re_set_context (struct breakpoint *b) | |
14779 | { | |
14780 | struct cleanup *cleanups; | |
14781 | ||
14782 | input_radix = b->input_radix; | |
14783 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14784 | if (b->pspace != NULL) |
14785 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14786 | set_language (b->language); |
14787 | ||
14788 | return cleanups; | |
ef23e705 TJB |
14789 | } |
14790 | ||
c906108c SS |
14791 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14792 | The value we return ends up being the return value from catch_errors. | |
14793 | Unused in this case. */ | |
14794 | ||
14795 | static int | |
4efb68b1 | 14796 | breakpoint_re_set_one (void *bint) |
c906108c | 14797 | { |
4a64f543 | 14798 | /* Get past catch_errs. */ |
53a5351d | 14799 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14800 | struct cleanup *cleanups; |
c906108c | 14801 | |
348d480f PA |
14802 | cleanups = prepare_re_set_context (b); |
14803 | b->ops->re_set (b); | |
14804 | do_cleanups (cleanups); | |
c906108c SS |
14805 | return 0; |
14806 | } | |
14807 | ||
69de3c6a | 14808 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14809 | void |
69de3c6a | 14810 | breakpoint_re_set (void) |
c906108c | 14811 | { |
35df4500 | 14812 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14813 | enum language save_language; |
14814 | int save_input_radix; | |
6c95b8df | 14815 | struct cleanup *old_chain; |
c5aa993b | 14816 | |
c906108c SS |
14817 | save_language = current_language->la_language; |
14818 | save_input_radix = input_radix; | |
6c95b8df PA |
14819 | old_chain = save_current_program_space (); |
14820 | ||
35df4500 | 14821 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14822 | { |
4a64f543 | 14823 | /* Format possible error msg. */ |
fe3f5fa8 | 14824 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14825 | b->number); |
14826 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14827 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14828 | do_cleanups (cleanups); |
c5aa993b | 14829 | } |
c906108c SS |
14830 | set_language (save_language); |
14831 | input_radix = save_input_radix; | |
e62c965a | 14832 | |
0756c555 | 14833 | jit_breakpoint_re_set (); |
4efc6507 | 14834 | |
6c95b8df PA |
14835 | do_cleanups (old_chain); |
14836 | ||
af02033e PP |
14837 | create_overlay_event_breakpoint (); |
14838 | create_longjmp_master_breakpoint (); | |
14839 | create_std_terminate_master_breakpoint (); | |
186c406b | 14840 | create_exception_master_breakpoint (); |
c906108c SS |
14841 | } |
14842 | \f | |
c906108c SS |
14843 | /* Reset the thread number of this breakpoint: |
14844 | ||
14845 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14846 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14847 | void |
fba45db2 | 14848 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14849 | { |
14850 | if (b->thread != -1) | |
14851 | { | |
39f77062 KB |
14852 | if (in_thread_list (inferior_ptid)) |
14853 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14854 | |
14855 | /* We're being called after following a fork. The new fork is | |
14856 | selected as current, and unless this was a vfork will have a | |
14857 | different program space from the original thread. Reset that | |
14858 | as well. */ | |
14859 | b->loc->pspace = current_program_space; | |
c906108c SS |
14860 | } |
14861 | } | |
14862 | ||
03ac34d5 MS |
14863 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14864 | If from_tty is nonzero, it prints a message to that effect, | |
14865 | which ends with a period (no newline). */ | |
14866 | ||
c906108c | 14867 | void |
fba45db2 | 14868 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14869 | { |
52f0bd74 | 14870 | struct breakpoint *b; |
c906108c SS |
14871 | |
14872 | if (count < 0) | |
14873 | count = 0; | |
14874 | ||
14875 | ALL_BREAKPOINTS (b) | |
14876 | if (b->number == bptnum) | |
c5aa993b | 14877 | { |
d77f58be SS |
14878 | if (is_tracepoint (b)) |
14879 | { | |
14880 | if (from_tty && count != 0) | |
14881 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14882 | bptnum); | |
14883 | return; | |
14884 | } | |
14885 | ||
c5aa993b | 14886 | b->ignore_count = count; |
221ea385 KS |
14887 | if (from_tty) |
14888 | { | |
14889 | if (count == 0) | |
3e43a32a MS |
14890 | printf_filtered (_("Will stop next time " |
14891 | "breakpoint %d is reached."), | |
221ea385 KS |
14892 | bptnum); |
14893 | else if (count == 1) | |
a3f17187 | 14894 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14895 | bptnum); |
14896 | else | |
3e43a32a MS |
14897 | printf_filtered (_("Will ignore next %d " |
14898 | "crossings of breakpoint %d."), | |
221ea385 KS |
14899 | count, bptnum); |
14900 | } | |
8d3788bd | 14901 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14902 | return; |
14903 | } | |
c906108c | 14904 | |
8a3fe4f8 | 14905 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14906 | } |
14907 | ||
c906108c SS |
14908 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14909 | ||
14910 | static void | |
fba45db2 | 14911 | ignore_command (char *args, int from_tty) |
c906108c SS |
14912 | { |
14913 | char *p = args; | |
52f0bd74 | 14914 | int num; |
c906108c SS |
14915 | |
14916 | if (p == 0) | |
e2e0b3e5 | 14917 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14918 | |
c906108c | 14919 | num = get_number (&p); |
5c44784c | 14920 | if (num == 0) |
8a3fe4f8 | 14921 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14922 | if (*p == 0) |
8a3fe4f8 | 14923 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14924 | |
14925 | set_ignore_count (num, | |
14926 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14927 | from_tty); | |
221ea385 KS |
14928 | if (from_tty) |
14929 | printf_filtered ("\n"); | |
c906108c SS |
14930 | } |
14931 | \f | |
14932 | /* Call FUNCTION on each of the breakpoints | |
14933 | whose numbers are given in ARGS. */ | |
14934 | ||
14935 | static void | |
95a42b64 TT |
14936 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14937 | void *), | |
14938 | void *data) | |
c906108c | 14939 | { |
52f0bd74 AC |
14940 | int num; |
14941 | struct breakpoint *b, *tmp; | |
11cf8741 | 14942 | int match; |
197f0a60 | 14943 | struct get_number_or_range_state state; |
c906108c | 14944 | |
197f0a60 | 14945 | if (args == 0) |
e2e0b3e5 | 14946 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14947 | |
197f0a60 TT |
14948 | init_number_or_range (&state, args); |
14949 | ||
14950 | while (!state.finished) | |
c906108c | 14951 | { |
e799154c | 14952 | const char *p = state.string; |
197f0a60 | 14953 | |
11cf8741 | 14954 | match = 0; |
c5aa993b | 14955 | |
197f0a60 | 14956 | num = get_number_or_range (&state); |
5c44784c | 14957 | if (num == 0) |
c5aa993b | 14958 | { |
8a3fe4f8 | 14959 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14960 | } |
14961 | else | |
14962 | { | |
14963 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14964 | if (b->number == num) | |
14965 | { | |
11cf8741 | 14966 | match = 1; |
cdac0397 | 14967 | function (b, data); |
11cf8741 | 14968 | break; |
5c44784c | 14969 | } |
11cf8741 | 14970 | if (match == 0) |
a3f17187 | 14971 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14972 | } |
c906108c SS |
14973 | } |
14974 | } | |
14975 | ||
0d381245 VP |
14976 | static struct bp_location * |
14977 | find_location_by_number (char *number) | |
14978 | { | |
14979 | char *dot = strchr (number, '.'); | |
14980 | char *p1; | |
14981 | int bp_num; | |
14982 | int loc_num; | |
14983 | struct breakpoint *b; | |
14984 | struct bp_location *loc; | |
14985 | ||
14986 | *dot = '\0'; | |
14987 | ||
14988 | p1 = number; | |
197f0a60 | 14989 | bp_num = get_number (&p1); |
0d381245 VP |
14990 | if (bp_num == 0) |
14991 | error (_("Bad breakpoint number '%s'"), number); | |
14992 | ||
14993 | ALL_BREAKPOINTS (b) | |
14994 | if (b->number == bp_num) | |
14995 | { | |
14996 | break; | |
14997 | } | |
14998 | ||
14999 | if (!b || b->number != bp_num) | |
15000 | error (_("Bad breakpoint number '%s'"), number); | |
15001 | ||
15002 | p1 = dot+1; | |
197f0a60 | 15003 | loc_num = get_number (&p1); |
0d381245 VP |
15004 | if (loc_num == 0) |
15005 | error (_("Bad breakpoint location number '%s'"), number); | |
15006 | ||
15007 | --loc_num; | |
15008 | loc = b->loc; | |
15009 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
15010 | ; | |
15011 | if (!loc) | |
15012 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
15013 | ||
15014 | return loc; | |
15015 | } | |
15016 | ||
15017 | ||
1900040c MS |
15018 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
15019 | If from_tty is nonzero, it prints a message to that effect, | |
15020 | which ends with a period (no newline). */ | |
15021 | ||
c906108c | 15022 | void |
fba45db2 | 15023 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
15024 | { |
15025 | /* Never disable a watchpoint scope breakpoint; we want to | |
15026 | hit them when we leave scope so we can delete both the | |
15027 | watchpoint and its scope breakpoint at that time. */ | |
15028 | if (bpt->type == bp_watchpoint_scope) | |
15029 | return; | |
15030 | ||
c2c6d25f | 15031 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 15032 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
15033 | return; |
15034 | ||
b5de0fa7 | 15035 | bpt->enable_state = bp_disabled; |
c906108c | 15036 | |
b775012e LM |
15037 | /* Mark breakpoint locations modified. */ |
15038 | mark_breakpoint_modified (bpt); | |
15039 | ||
d248b706 KY |
15040 | if (target_supports_enable_disable_tracepoint () |
15041 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
15042 | { | |
15043 | struct bp_location *location; | |
15044 | ||
15045 | for (location = bpt->loc; location; location = location->next) | |
15046 | target_disable_tracepoint (location); | |
15047 | } | |
15048 | ||
44702360 | 15049 | update_global_location_list (UGLL_DONT_INSERT); |
c906108c | 15050 | |
8d3788bd | 15051 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
15052 | } |
15053 | ||
51be5b68 PA |
15054 | /* A callback for iterate_over_related_breakpoints. */ |
15055 | ||
15056 | static void | |
15057 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
15058 | { | |
15059 | disable_breakpoint (b); | |
15060 | } | |
15061 | ||
95a42b64 TT |
15062 | /* A callback for map_breakpoint_numbers that calls |
15063 | disable_breakpoint. */ | |
15064 | ||
15065 | static void | |
15066 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
15067 | { | |
51be5b68 | 15068 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
15069 | } |
15070 | ||
c906108c | 15071 | static void |
fba45db2 | 15072 | disable_command (char *args, int from_tty) |
c906108c | 15073 | { |
c906108c | 15074 | if (args == 0) |
46c6471b PA |
15075 | { |
15076 | struct breakpoint *bpt; | |
15077 | ||
15078 | ALL_BREAKPOINTS (bpt) | |
15079 | if (user_breakpoint_p (bpt)) | |
15080 | disable_breakpoint (bpt); | |
15081 | } | |
9eaabc75 | 15082 | else |
0d381245 | 15083 | { |
9eaabc75 MW |
15084 | char *num = extract_arg (&args); |
15085 | ||
15086 | while (num) | |
d248b706 | 15087 | { |
9eaabc75 | 15088 | if (strchr (num, '.')) |
b775012e | 15089 | { |
9eaabc75 MW |
15090 | struct bp_location *loc = find_location_by_number (num); |
15091 | ||
15092 | if (loc) | |
15093 | { | |
15094 | if (loc->enabled) | |
15095 | { | |
15096 | loc->enabled = 0; | |
15097 | mark_breakpoint_location_modified (loc); | |
15098 | } | |
15099 | if (target_supports_enable_disable_tracepoint () | |
15100 | && current_trace_status ()->running && loc->owner | |
15101 | && is_tracepoint (loc->owner)) | |
15102 | target_disable_tracepoint (loc); | |
15103 | } | |
44702360 | 15104 | update_global_location_list (UGLL_DONT_INSERT); |
b775012e | 15105 | } |
9eaabc75 MW |
15106 | else |
15107 | map_breakpoint_numbers (num, do_map_disable_breakpoint, NULL); | |
15108 | num = extract_arg (&args); | |
d248b706 | 15109 | } |
0d381245 | 15110 | } |
c906108c SS |
15111 | } |
15112 | ||
15113 | static void | |
816338b5 SS |
15114 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
15115 | int count) | |
c906108c | 15116 | { |
afe38095 | 15117 | int target_resources_ok; |
c906108c SS |
15118 | |
15119 | if (bpt->type == bp_hardware_breakpoint) | |
15120 | { | |
15121 | int i; | |
c5aa993b | 15122 | i = hw_breakpoint_used_count (); |
53a5351d | 15123 | target_resources_ok = |
d92524f1 | 15124 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 15125 | i + 1, 0); |
c906108c | 15126 | if (target_resources_ok == 0) |
8a3fe4f8 | 15127 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 15128 | else if (target_resources_ok < 0) |
8a3fe4f8 | 15129 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
15130 | } |
15131 | ||
cc60f2e3 | 15132 | if (is_watchpoint (bpt)) |
c906108c | 15133 | { |
d07205c2 JK |
15134 | /* Initialize it just to avoid a GCC false warning. */ |
15135 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 15136 | volatile struct gdb_exception e; |
dde02812 ES |
15137 | |
15138 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 15139 | { |
3a5c3e22 PA |
15140 | struct watchpoint *w = (struct watchpoint *) bpt; |
15141 | ||
1e718ff1 TJB |
15142 | orig_enable_state = bpt->enable_state; |
15143 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 15144 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 15145 | } |
dde02812 | 15146 | if (e.reason < 0) |
c5aa993b | 15147 | { |
1e718ff1 | 15148 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
15149 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
15150 | bpt->number); | |
15151 | return; | |
c5aa993b | 15152 | } |
c906108c | 15153 | } |
0101ce28 | 15154 | |
b4c291bb KH |
15155 | if (bpt->enable_state != bp_permanent) |
15156 | bpt->enable_state = bp_enabled; | |
d248b706 | 15157 | |
b775012e LM |
15158 | bpt->enable_state = bp_enabled; |
15159 | ||
15160 | /* Mark breakpoint locations modified. */ | |
15161 | mark_breakpoint_modified (bpt); | |
15162 | ||
d248b706 KY |
15163 | if (target_supports_enable_disable_tracepoint () |
15164 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
15165 | { | |
15166 | struct bp_location *location; | |
15167 | ||
15168 | for (location = bpt->loc; location; location = location->next) | |
15169 | target_enable_tracepoint (location); | |
15170 | } | |
15171 | ||
b4c291bb | 15172 | bpt->disposition = disposition; |
816338b5 | 15173 | bpt->enable_count = count; |
44702360 | 15174 | update_global_location_list (UGLL_MAY_INSERT); |
9c97429f | 15175 | |
8d3788bd | 15176 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
15177 | } |
15178 | ||
fe3f5fa8 | 15179 | |
c906108c | 15180 | void |
fba45db2 | 15181 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 15182 | { |
816338b5 | 15183 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
15184 | } |
15185 | ||
15186 | static void | |
15187 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
15188 | { | |
15189 | enable_breakpoint (bpt); | |
c906108c SS |
15190 | } |
15191 | ||
95a42b64 TT |
15192 | /* A callback for map_breakpoint_numbers that calls |
15193 | enable_breakpoint. */ | |
15194 | ||
15195 | static void | |
15196 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
15197 | { | |
51be5b68 | 15198 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
15199 | } |
15200 | ||
c906108c SS |
15201 | /* The enable command enables the specified breakpoints (or all defined |
15202 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 15203 | in stopping the inferior. */ |
c906108c | 15204 | |
c906108c | 15205 | static void |
fba45db2 | 15206 | enable_command (char *args, int from_tty) |
c906108c | 15207 | { |
c906108c | 15208 | if (args == 0) |
46c6471b PA |
15209 | { |
15210 | struct breakpoint *bpt; | |
15211 | ||
15212 | ALL_BREAKPOINTS (bpt) | |
15213 | if (user_breakpoint_p (bpt)) | |
15214 | enable_breakpoint (bpt); | |
15215 | } | |
9eaabc75 | 15216 | else |
0d381245 | 15217 | { |
9eaabc75 MW |
15218 | char *num = extract_arg (&args); |
15219 | ||
15220 | while (num) | |
d248b706 | 15221 | { |
9eaabc75 | 15222 | if (strchr (num, '.')) |
b775012e | 15223 | { |
9eaabc75 MW |
15224 | struct bp_location *loc = find_location_by_number (num); |
15225 | ||
15226 | if (loc) | |
15227 | { | |
15228 | if (!loc->enabled) | |
15229 | { | |
15230 | loc->enabled = 1; | |
15231 | mark_breakpoint_location_modified (loc); | |
15232 | } | |
15233 | if (target_supports_enable_disable_tracepoint () | |
15234 | && current_trace_status ()->running && loc->owner | |
15235 | && is_tracepoint (loc->owner)) | |
15236 | target_enable_tracepoint (loc); | |
15237 | } | |
44702360 | 15238 | update_global_location_list (UGLL_MAY_INSERT); |
b775012e | 15239 | } |
9eaabc75 MW |
15240 | else |
15241 | map_breakpoint_numbers (num, do_map_enable_breakpoint, NULL); | |
15242 | num = extract_arg (&args); | |
d248b706 | 15243 | } |
0d381245 | 15244 | } |
c906108c SS |
15245 | } |
15246 | ||
816338b5 SS |
15247 | /* This struct packages up disposition data for application to multiple |
15248 | breakpoints. */ | |
15249 | ||
15250 | struct disp_data | |
15251 | { | |
15252 | enum bpdisp disp; | |
15253 | int count; | |
15254 | }; | |
15255 | ||
c906108c | 15256 | static void |
51be5b68 PA |
15257 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
15258 | { | |
816338b5 | 15259 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 15260 | |
816338b5 | 15261 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
15262 | } |
15263 | ||
15264 | static void | |
15265 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 15266 | { |
816338b5 | 15267 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
15268 | |
15269 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
15270 | } |
15271 | ||
c906108c | 15272 | static void |
fba45db2 | 15273 | enable_once_command (char *args, int from_tty) |
c906108c | 15274 | { |
51be5b68 | 15275 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
15276 | } |
15277 | ||
816338b5 SS |
15278 | static void |
15279 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
15280 | { | |
15281 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
15282 | ||
15283 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
15284 | } | |
15285 | ||
15286 | static void | |
15287 | enable_count_command (char *args, int from_tty) | |
15288 | { | |
15289 | int count = get_number (&args); | |
15290 | ||
15291 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
15292 | } | |
15293 | ||
c906108c | 15294 | static void |
51be5b68 | 15295 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 15296 | { |
816338b5 | 15297 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
15298 | |
15299 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
15300 | } |
15301 | ||
c906108c | 15302 | static void |
fba45db2 | 15303 | enable_delete_command (char *args, int from_tty) |
c906108c | 15304 | { |
51be5b68 | 15305 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
15306 | } |
15307 | \f | |
fa8d40ab JJ |
15308 | static void |
15309 | set_breakpoint_cmd (char *args, int from_tty) | |
15310 | { | |
15311 | } | |
15312 | ||
15313 | static void | |
15314 | show_breakpoint_cmd (char *args, int from_tty) | |
15315 | { | |
15316 | } | |
15317 | ||
1f3b5d1b PP |
15318 | /* Invalidate last known value of any hardware watchpoint if |
15319 | the memory which that value represents has been written to by | |
15320 | GDB itself. */ | |
15321 | ||
15322 | static void | |
8de0566d YQ |
15323 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
15324 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
15325 | const bfd_byte *data) |
15326 | { | |
15327 | struct breakpoint *bp; | |
15328 | ||
15329 | ALL_BREAKPOINTS (bp) | |
15330 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 15331 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 15332 | { |
3a5c3e22 | 15333 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 15334 | |
3a5c3e22 PA |
15335 | if (wp->val_valid && wp->val) |
15336 | { | |
15337 | struct bp_location *loc; | |
15338 | ||
15339 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
15340 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
15341 | && loc->address + loc->length > addr | |
15342 | && addr + len > loc->address) | |
15343 | { | |
15344 | value_free (wp->val); | |
15345 | wp->val = NULL; | |
15346 | wp->val_valid = 0; | |
15347 | } | |
15348 | } | |
1f3b5d1b PP |
15349 | } |
15350 | } | |
15351 | ||
8181d85f DJ |
15352 | /* Create and insert a raw software breakpoint at PC. Return an |
15353 | identifier, which should be used to remove the breakpoint later. | |
15354 | In general, places which call this should be using something on the | |
15355 | breakpoint chain instead; this function should be eliminated | |
15356 | someday. */ | |
15357 | ||
15358 | void * | |
6c95b8df PA |
15359 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
15360 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
15361 | { |
15362 | struct bp_target_info *bp_tgt; | |
ef370185 | 15363 | struct bp_location *bl; |
8181d85f | 15364 | |
41bf6aca | 15365 | bp_tgt = XCNEW (struct bp_target_info); |
8181d85f | 15366 | |
6c95b8df | 15367 | bp_tgt->placed_address_space = aspace; |
0d5ed153 | 15368 | bp_tgt->reqstd_address = pc; |
6c95b8df | 15369 | |
ef370185 JB |
15370 | /* If an unconditional non-raw breakpoint is already inserted at |
15371 | that location, there's no need to insert another. However, with | |
15372 | target-side evaluation of breakpoint conditions, if the | |
15373 | breakpoint that is currently inserted on the target is | |
15374 | conditional, we need to make it unconditional. Note that a | |
15375 | breakpoint with target-side commands is not reported even if | |
15376 | unconditional, so we need to remove the commands from the target | |
15377 | as well. */ | |
15378 | bl = find_non_raw_software_breakpoint_inserted_here (aspace, pc); | |
15379 | if (bl != NULL | |
15380 | && VEC_empty (agent_expr_p, bl->target_info.conditions) | |
15381 | && VEC_empty (agent_expr_p, bl->target_info.tcommands)) | |
15382 | { | |
15383 | bp_target_info_copy_insertion_state (bp_tgt, &bl->target_info); | |
15384 | return bp_tgt; | |
15385 | } | |
15386 | ||
a6d9a66e | 15387 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
15388 | { |
15389 | /* Could not insert the breakpoint. */ | |
15390 | xfree (bp_tgt); | |
15391 | return NULL; | |
15392 | } | |
15393 | ||
15394 | return bp_tgt; | |
15395 | } | |
15396 | ||
4a64f543 MS |
15397 | /* Remove a breakpoint BP inserted by |
15398 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
15399 | |
15400 | int | |
a6d9a66e | 15401 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
15402 | { |
15403 | struct bp_target_info *bp_tgt = bp; | |
ef370185 | 15404 | struct address_space *aspace = bp_tgt->placed_address_space; |
0d5ed153 | 15405 | CORE_ADDR address = bp_tgt->reqstd_address; |
ef370185 | 15406 | struct bp_location *bl; |
8181d85f DJ |
15407 | int ret; |
15408 | ||
ef370185 JB |
15409 | bl = find_non_raw_software_breakpoint_inserted_here (aspace, address); |
15410 | ||
15411 | /* Only remove the raw breakpoint if there are no other non-raw | |
15412 | breakpoints still inserted at this location. Otherwise, we would | |
15413 | be effectively disabling those breakpoints. */ | |
15414 | if (bl == NULL) | |
15415 | ret = target_remove_breakpoint (gdbarch, bp_tgt); | |
15416 | else if (!VEC_empty (agent_expr_p, bl->target_info.conditions) | |
15417 | || !VEC_empty (agent_expr_p, bl->target_info.tcommands)) | |
15418 | { | |
15419 | /* The target is evaluating conditions, and when we inserted the | |
15420 | software single-step breakpoint, we had made the breakpoint | |
15421 | unconditional and command-less on the target side. Reinsert | |
15422 | to restore the conditions/commands. */ | |
15423 | ret = target_insert_breakpoint (bl->gdbarch, &bl->target_info); | |
15424 | } | |
15425 | else | |
15426 | ret = 0; | |
15427 | ||
8181d85f DJ |
15428 | xfree (bp_tgt); |
15429 | ||
15430 | return ret; | |
15431 | } | |
15432 | ||
8181d85f DJ |
15433 | /* Create and insert a breakpoint for software single step. */ |
15434 | ||
15435 | void | |
6c95b8df | 15436 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
15437 | struct address_space *aspace, |
15438 | CORE_ADDR next_pc) | |
8181d85f DJ |
15439 | { |
15440 | void **bpt_p; | |
15441 | ||
15442 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
15443 | { |
15444 | bpt_p = &single_step_breakpoints[0]; | |
15445 | single_step_gdbarch[0] = gdbarch; | |
15446 | } | |
8181d85f DJ |
15447 | else |
15448 | { | |
15449 | gdb_assert (single_step_breakpoints[1] == NULL); | |
15450 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 15451 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
15452 | } |
15453 | ||
4a64f543 MS |
15454 | /* NOTE drow/2006-04-11: A future improvement to this function would |
15455 | be to only create the breakpoints once, and actually put them on | |
15456 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
15457 | We could adjust the addresses each time they were needed. Doing | |
15458 | this requires corresponding changes elsewhere where single step | |
15459 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 15460 | |
6c95b8df | 15461 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 15462 | if (*bpt_p == NULL) |
5af949e3 UW |
15463 | error (_("Could not insert single-step breakpoint at %s"), |
15464 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
15465 | } |
15466 | ||
f02253f1 HZ |
15467 | /* Check if the breakpoints used for software single stepping |
15468 | were inserted or not. */ | |
15469 | ||
15470 | int | |
15471 | single_step_breakpoints_inserted (void) | |
15472 | { | |
15473 | return (single_step_breakpoints[0] != NULL | |
15474 | || single_step_breakpoints[1] != NULL); | |
15475 | } | |
15476 | ||
8181d85f DJ |
15477 | /* Remove and delete any breakpoints used for software single step. */ |
15478 | ||
15479 | void | |
15480 | remove_single_step_breakpoints (void) | |
15481 | { | |
15482 | gdb_assert (single_step_breakpoints[0] != NULL); | |
15483 | ||
15484 | /* See insert_single_step_breakpoint for more about this deprecated | |
15485 | call. */ | |
a6d9a66e UW |
15486 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
15487 | single_step_breakpoints[0]); | |
15488 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
15489 | single_step_breakpoints[0] = NULL; |
15490 | ||
15491 | if (single_step_breakpoints[1] != NULL) | |
15492 | { | |
a6d9a66e UW |
15493 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
15494 | single_step_breakpoints[1]); | |
15495 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
15496 | single_step_breakpoints[1] = NULL; |
15497 | } | |
15498 | } | |
15499 | ||
d03285ec UW |
15500 | /* Delete software single step breakpoints without removing them from |
15501 | the inferior. This is intended to be used if the inferior's address | |
15502 | space where they were inserted is already gone, e.g. after exit or | |
15503 | exec. */ | |
15504 | ||
15505 | void | |
15506 | cancel_single_step_breakpoints (void) | |
15507 | { | |
15508 | int i; | |
15509 | ||
15510 | for (i = 0; i < 2; i++) | |
15511 | if (single_step_breakpoints[i]) | |
15512 | { | |
15513 | xfree (single_step_breakpoints[i]); | |
15514 | single_step_breakpoints[i] = NULL; | |
15515 | single_step_gdbarch[i] = NULL; | |
15516 | } | |
15517 | } | |
15518 | ||
15519 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
15520 | removing them. */ | |
15521 | ||
15522 | static void | |
15523 | detach_single_step_breakpoints (void) | |
15524 | { | |
15525 | int i; | |
15526 | ||
15527 | for (i = 0; i < 2; i++) | |
15528 | if (single_step_breakpoints[i]) | |
15529 | target_remove_breakpoint (single_step_gdbarch[i], | |
15530 | single_step_breakpoints[i]); | |
15531 | } | |
15532 | ||
ef370185 JB |
15533 | /* Find the software single-step breakpoint that inserted at PC. |
15534 | Returns its slot if found, and -1 if not found. */ | |
1aafd4da | 15535 | |
ef370185 JB |
15536 | static int |
15537 | find_single_step_breakpoint (struct address_space *aspace, | |
15538 | CORE_ADDR pc) | |
1aafd4da UW |
15539 | { |
15540 | int i; | |
15541 | ||
15542 | for (i = 0; i < 2; i++) | |
15543 | { | |
15544 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
15545 | if (bp_tgt |
15546 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
0d5ed153 | 15547 | bp_tgt->reqstd_address, |
6c95b8df | 15548 | aspace, pc)) |
ef370185 | 15549 | return i; |
1aafd4da UW |
15550 | } |
15551 | ||
ef370185 JB |
15552 | return -1; |
15553 | } | |
15554 | ||
15555 | /* Check whether a software single-step breakpoint is inserted at | |
15556 | PC. */ | |
15557 | ||
15558 | int | |
15559 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, | |
15560 | CORE_ADDR pc) | |
15561 | { | |
15562 | return find_single_step_breakpoint (aspace, pc) >= 0; | |
1aafd4da UW |
15563 | } |
15564 | ||
a96d9b2e SDJ |
15565 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
15566 | non-zero otherwise. */ | |
15567 | static int | |
15568 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
15569 | { | |
15570 | if (syscall_catchpoint_p (bp) | |
15571 | && bp->enable_state != bp_disabled | |
15572 | && bp->enable_state != bp_call_disabled) | |
15573 | return 1; | |
15574 | else | |
15575 | return 0; | |
15576 | } | |
15577 | ||
15578 | int | |
15579 | catch_syscall_enabled (void) | |
15580 | { | |
fa3064dd YQ |
15581 | struct catch_syscall_inferior_data *inf_data |
15582 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 15583 | |
fa3064dd | 15584 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
15585 | } |
15586 | ||
15587 | int | |
15588 | catching_syscall_number (int syscall_number) | |
15589 | { | |
15590 | struct breakpoint *bp; | |
15591 | ||
15592 | ALL_BREAKPOINTS (bp) | |
15593 | if (is_syscall_catchpoint_enabled (bp)) | |
15594 | { | |
be5c67c1 PA |
15595 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
15596 | ||
15597 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
15598 | { |
15599 | int i, iter; | |
15600 | for (i = 0; | |
be5c67c1 | 15601 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
15602 | i++) |
15603 | if (syscall_number == iter) | |
15604 | return 1; | |
15605 | } | |
15606 | else | |
15607 | return 1; | |
15608 | } | |
15609 | ||
15610 | return 0; | |
15611 | } | |
15612 | ||
15613 | /* Complete syscall names. Used by "catch syscall". */ | |
49c4e619 | 15614 | static VEC (char_ptr) * |
a96d9b2e | 15615 | catch_syscall_completer (struct cmd_list_element *cmd, |
6f937416 | 15616 | const char *text, const char *word) |
a96d9b2e SDJ |
15617 | { |
15618 | const char **list = get_syscall_names (); | |
49c4e619 | 15619 | VEC (char_ptr) *retlist |
b45627a0 | 15620 | = (list == NULL) ? NULL : complete_on_enum (list, word, word); |
cc59ec59 | 15621 | |
c38eea1a MS |
15622 | xfree (list); |
15623 | return retlist; | |
a96d9b2e SDJ |
15624 | } |
15625 | ||
1042e4c0 SS |
15626 | /* Tracepoint-specific operations. */ |
15627 | ||
15628 | /* Set tracepoint count to NUM. */ | |
15629 | static void | |
15630 | set_tracepoint_count (int num) | |
15631 | { | |
15632 | tracepoint_count = num; | |
4fa62494 | 15633 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
15634 | } |
15635 | ||
70221824 | 15636 | static void |
1042e4c0 SS |
15637 | trace_command (char *arg, int from_tty) |
15638 | { | |
55aa24fb SDJ |
15639 | struct breakpoint_ops *ops; |
15640 | const char *arg_cp = arg; | |
15641 | ||
15642 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
15643 | ops = &tracepoint_probe_breakpoint_ops; | |
15644 | else | |
15645 | ops = &tracepoint_breakpoint_ops; | |
15646 | ||
558a9d82 YQ |
15647 | create_breakpoint (get_current_arch (), |
15648 | arg, | |
15649 | NULL, 0, NULL, 1 /* parse arg */, | |
15650 | 0 /* tempflag */, | |
15651 | bp_tracepoint /* type_wanted */, | |
15652 | 0 /* Ignore count */, | |
15653 | pending_break_support, | |
15654 | ops, | |
15655 | from_tty, | |
15656 | 1 /* enabled */, | |
15657 | 0 /* internal */, 0); | |
1042e4c0 SS |
15658 | } |
15659 | ||
70221824 | 15660 | static void |
7a697b8d SS |
15661 | ftrace_command (char *arg, int from_tty) |
15662 | { | |
558a9d82 YQ |
15663 | create_breakpoint (get_current_arch (), |
15664 | arg, | |
15665 | NULL, 0, NULL, 1 /* parse arg */, | |
15666 | 0 /* tempflag */, | |
15667 | bp_fast_tracepoint /* type_wanted */, | |
15668 | 0 /* Ignore count */, | |
15669 | pending_break_support, | |
15670 | &tracepoint_breakpoint_ops, | |
15671 | from_tty, | |
15672 | 1 /* enabled */, | |
15673 | 0 /* internal */, 0); | |
0fb4aa4b PA |
15674 | } |
15675 | ||
15676 | /* strace command implementation. Creates a static tracepoint. */ | |
15677 | ||
70221824 | 15678 | static void |
0fb4aa4b PA |
15679 | strace_command (char *arg, int from_tty) |
15680 | { | |
983af33b SDJ |
15681 | struct breakpoint_ops *ops; |
15682 | ||
15683 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15684 | or with a normal static tracepoint. */ | |
15685 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
15686 | ops = &strace_marker_breakpoint_ops; | |
15687 | else | |
15688 | ops = &tracepoint_breakpoint_ops; | |
15689 | ||
558a9d82 YQ |
15690 | create_breakpoint (get_current_arch (), |
15691 | arg, | |
15692 | NULL, 0, NULL, 1 /* parse arg */, | |
15693 | 0 /* tempflag */, | |
15694 | bp_static_tracepoint /* type_wanted */, | |
15695 | 0 /* Ignore count */, | |
15696 | pending_break_support, | |
15697 | ops, | |
15698 | from_tty, | |
15699 | 1 /* enabled */, | |
15700 | 0 /* internal */, 0); | |
7a697b8d SS |
15701 | } |
15702 | ||
409873ef SS |
15703 | /* Set up a fake reader function that gets command lines from a linked |
15704 | list that was acquired during tracepoint uploading. */ | |
15705 | ||
15706 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15707 | static int next_cmd; |
409873ef SS |
15708 | |
15709 | static char * | |
15710 | read_uploaded_action (void) | |
15711 | { | |
15712 | char *rslt; | |
15713 | ||
3149d8c1 | 15714 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15715 | |
3149d8c1 | 15716 | next_cmd++; |
409873ef SS |
15717 | |
15718 | return rslt; | |
15719 | } | |
15720 | ||
00bf0b85 SS |
15721 | /* Given information about a tracepoint as recorded on a target (which |
15722 | can be either a live system or a trace file), attempt to create an | |
15723 | equivalent GDB tracepoint. This is not a reliable process, since | |
15724 | the target does not necessarily have all the information used when | |
15725 | the tracepoint was originally defined. */ | |
15726 | ||
d9b3f62e | 15727 | struct tracepoint * |
00bf0b85 | 15728 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15729 | { |
409873ef | 15730 | char *addr_str, small_buf[100]; |
d9b3f62e | 15731 | struct tracepoint *tp; |
fd9b8c24 | 15732 | |
409873ef SS |
15733 | if (utp->at_string) |
15734 | addr_str = utp->at_string; | |
15735 | else | |
15736 | { | |
15737 | /* In the absence of a source location, fall back to raw | |
15738 | address. Since there is no way to confirm that the address | |
15739 | means the same thing as when the trace was started, warn the | |
15740 | user. */ | |
3e43a32a MS |
15741 | warning (_("Uploaded tracepoint %d has no " |
15742 | "source location, using raw address"), | |
409873ef | 15743 | utp->number); |
8c042590 | 15744 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
15745 | addr_str = small_buf; |
15746 | } | |
15747 | ||
15748 | /* There's not much we can do with a sequence of bytecodes. */ | |
15749 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15750 | warning (_("Uploaded tracepoint %d condition " |
15751 | "has no source form, ignoring it"), | |
409873ef | 15752 | utp->number); |
d5551862 | 15753 | |
8cdf0e15 | 15754 | if (!create_breakpoint (get_current_arch (), |
409873ef | 15755 | addr_str, |
e7e0cddf SS |
15756 | utp->cond_string, -1, NULL, |
15757 | 0 /* parse cond/thread */, | |
8cdf0e15 | 15758 | 0 /* tempflag */, |
0fb4aa4b | 15759 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15760 | 0 /* Ignore count */, |
15761 | pending_break_support, | |
348d480f | 15762 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15763 | 0 /* from_tty */, |
84f4c1fe | 15764 | utp->enabled /* enabled */, |
44f238bb PA |
15765 | 0 /* internal */, |
15766 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
15767 | return NULL; |
15768 | ||
409873ef | 15769 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15770 | tp = get_tracepoint (tracepoint_count); |
15771 | gdb_assert (tp != NULL); | |
d5551862 | 15772 | |
00bf0b85 SS |
15773 | if (utp->pass > 0) |
15774 | { | |
8c042590 PM |
15775 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15776 | tp->base.number); | |
00bf0b85 | 15777 | |
409873ef | 15778 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15779 | } |
15780 | ||
409873ef SS |
15781 | /* If we have uploaded versions of the original commands, set up a |
15782 | special-purpose "reader" function and call the usual command line | |
15783 | reader, then pass the result to the breakpoint command-setting | |
15784 | function. */ | |
3149d8c1 | 15785 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15786 | { |
409873ef | 15787 | struct command_line *cmd_list; |
00bf0b85 | 15788 | |
409873ef | 15789 | this_utp = utp; |
3149d8c1 | 15790 | next_cmd = 0; |
d5551862 | 15791 | |
409873ef SS |
15792 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15793 | ||
d9b3f62e | 15794 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15795 | } |
3149d8c1 SS |
15796 | else if (!VEC_empty (char_ptr, utp->actions) |
15797 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15798 | warning (_("Uploaded tracepoint %d actions " |
15799 | "have no source form, ignoring them"), | |
409873ef | 15800 | utp->number); |
00bf0b85 | 15801 | |
f196051f SS |
15802 | /* Copy any status information that might be available. */ |
15803 | tp->base.hit_count = utp->hit_count; | |
15804 | tp->traceframe_usage = utp->traceframe_usage; | |
15805 | ||
00bf0b85 | 15806 | return tp; |
d9b3f62e | 15807 | } |
00bf0b85 | 15808 | |
1042e4c0 SS |
15809 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15810 | omitted. */ | |
15811 | ||
15812 | static void | |
e5a67952 | 15813 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15814 | { |
79a45e25 | 15815 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15816 | int num_printed; |
1042e4c0 | 15817 | |
e5a67952 | 15818 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15819 | |
15820 | if (num_printed == 0) | |
1042e4c0 | 15821 | { |
e5a67952 | 15822 | if (args == NULL || *args == '\0') |
d77f58be SS |
15823 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15824 | else | |
e5a67952 | 15825 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15826 | } |
ad443146 SS |
15827 | |
15828 | default_collect_info (); | |
1042e4c0 SS |
15829 | } |
15830 | ||
4a64f543 | 15831 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15832 | Not supported by all targets. */ |
15833 | static void | |
15834 | enable_trace_command (char *args, int from_tty) | |
15835 | { | |
15836 | enable_command (args, from_tty); | |
15837 | } | |
15838 | ||
4a64f543 | 15839 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15840 | Not supported by all targets. */ |
15841 | static void | |
15842 | disable_trace_command (char *args, int from_tty) | |
15843 | { | |
15844 | disable_command (args, from_tty); | |
15845 | } | |
15846 | ||
4a64f543 | 15847 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15848 | static void |
15849 | delete_trace_command (char *arg, int from_tty) | |
15850 | { | |
35df4500 | 15851 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15852 | |
15853 | dont_repeat (); | |
15854 | ||
15855 | if (arg == 0) | |
15856 | { | |
15857 | int breaks_to_delete = 0; | |
15858 | ||
15859 | /* Delete all breakpoints if no argument. | |
15860 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15861 | have to be deleted with an explicit breakpoint number |
15862 | argument. */ | |
1042e4c0 | 15863 | ALL_TRACEPOINTS (b) |
46c6471b | 15864 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15865 | { |
15866 | breaks_to_delete = 1; | |
15867 | break; | |
15868 | } | |
1042e4c0 SS |
15869 | |
15870 | /* Ask user only if there are some breakpoints to delete. */ | |
15871 | if (!from_tty | |
15872 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15873 | { | |
35df4500 | 15874 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15875 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15876 | delete_breakpoint (b); |
1042e4c0 SS |
15877 | } |
15878 | } | |
15879 | else | |
51be5b68 | 15880 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15881 | } |
15882 | ||
197f0a60 TT |
15883 | /* Helper function for trace_pass_command. */ |
15884 | ||
15885 | static void | |
d9b3f62e | 15886 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15887 | { |
d9b3f62e | 15888 | tp->pass_count = count; |
6f6484cd | 15889 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15890 | if (from_tty) |
15891 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15892 | tp->base.number, count); |
197f0a60 TT |
15893 | } |
15894 | ||
1042e4c0 SS |
15895 | /* Set passcount for tracepoint. |
15896 | ||
15897 | First command argument is passcount, second is tracepoint number. | |
15898 | If tracepoint number omitted, apply to most recently defined. | |
15899 | Also accepts special argument "all". */ | |
15900 | ||
15901 | static void | |
15902 | trace_pass_command (char *args, int from_tty) | |
15903 | { | |
d9b3f62e | 15904 | struct tracepoint *t1; |
1042e4c0 | 15905 | unsigned int count; |
1042e4c0 SS |
15906 | |
15907 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15908 | error (_("passcount command requires an " |
15909 | "argument (count + optional TP num)")); | |
1042e4c0 | 15910 | |
4a64f543 | 15911 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15912 | |
529480d0 | 15913 | args = skip_spaces (args); |
1042e4c0 SS |
15914 | if (*args && strncasecmp (args, "all", 3) == 0) |
15915 | { | |
d9b3f62e PA |
15916 | struct breakpoint *b; |
15917 | ||
1042e4c0 | 15918 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15919 | if (*args) |
15920 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15921 | |
d9b3f62e | 15922 | ALL_TRACEPOINTS (b) |
197f0a60 | 15923 | { |
d9b3f62e | 15924 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15925 | trace_pass_set_count (t1, count, from_tty); |
15926 | } | |
15927 | } | |
15928 | else if (*args == '\0') | |
1042e4c0 | 15929 | { |
5fa1d40e | 15930 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15931 | if (t1) |
197f0a60 TT |
15932 | trace_pass_set_count (t1, count, from_tty); |
15933 | } | |
15934 | else | |
15935 | { | |
15936 | struct get_number_or_range_state state; | |
15937 | ||
15938 | init_number_or_range (&state, args); | |
15939 | while (!state.finished) | |
1042e4c0 | 15940 | { |
5fa1d40e | 15941 | t1 = get_tracepoint_by_number (&args, &state); |
197f0a60 TT |
15942 | if (t1) |
15943 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15944 | } |
15945 | } | |
1042e4c0 SS |
15946 | } |
15947 | ||
d9b3f62e | 15948 | struct tracepoint * |
1042e4c0 SS |
15949 | get_tracepoint (int num) |
15950 | { | |
15951 | struct breakpoint *t; | |
15952 | ||
15953 | ALL_TRACEPOINTS (t) | |
15954 | if (t->number == num) | |
d9b3f62e | 15955 | return (struct tracepoint *) t; |
1042e4c0 SS |
15956 | |
15957 | return NULL; | |
15958 | } | |
15959 | ||
d5551862 SS |
15960 | /* Find the tracepoint with the given target-side number (which may be |
15961 | different from the tracepoint number after disconnecting and | |
15962 | reconnecting). */ | |
15963 | ||
d9b3f62e | 15964 | struct tracepoint * |
d5551862 SS |
15965 | get_tracepoint_by_number_on_target (int num) |
15966 | { | |
d9b3f62e | 15967 | struct breakpoint *b; |
d5551862 | 15968 | |
d9b3f62e PA |
15969 | ALL_TRACEPOINTS (b) |
15970 | { | |
15971 | struct tracepoint *t = (struct tracepoint *) b; | |
15972 | ||
15973 | if (t->number_on_target == num) | |
15974 | return t; | |
15975 | } | |
d5551862 SS |
15976 | |
15977 | return NULL; | |
15978 | } | |
15979 | ||
1042e4c0 | 15980 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15981 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15982 | If the argument is missing, the most recent tracepoint |
15983 | (tracepoint_count) is returned. */ | |
15984 | ||
d9b3f62e | 15985 | struct tracepoint * |
197f0a60 | 15986 | get_tracepoint_by_number (char **arg, |
5fa1d40e | 15987 | struct get_number_or_range_state *state) |
1042e4c0 | 15988 | { |
1042e4c0 SS |
15989 | struct breakpoint *t; |
15990 | int tpnum; | |
15991 | char *instring = arg == NULL ? NULL : *arg; | |
15992 | ||
197f0a60 TT |
15993 | if (state) |
15994 | { | |
15995 | gdb_assert (!state->finished); | |
15996 | tpnum = get_number_or_range (state); | |
15997 | } | |
15998 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15999 | tpnum = tracepoint_count; |
1042e4c0 | 16000 | else |
197f0a60 | 16001 | tpnum = get_number (arg); |
1042e4c0 SS |
16002 | |
16003 | if (tpnum <= 0) | |
16004 | { | |
16005 | if (instring && *instring) | |
16006 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
16007 | instring); | |
16008 | else | |
5fa1d40e | 16009 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
16010 | return NULL; |
16011 | } | |
16012 | ||
16013 | ALL_TRACEPOINTS (t) | |
16014 | if (t->number == tpnum) | |
16015 | { | |
d9b3f62e | 16016 | return (struct tracepoint *) t; |
1042e4c0 SS |
16017 | } |
16018 | ||
1042e4c0 SS |
16019 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
16020 | return NULL; | |
16021 | } | |
16022 | ||
d9b3f62e PA |
16023 | void |
16024 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
16025 | { | |
16026 | if (b->thread != -1) | |
16027 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
16028 | ||
16029 | if (b->task != 0) | |
16030 | fprintf_unfiltered (fp, " task %d", b->task); | |
16031 | ||
16032 | fprintf_unfiltered (fp, "\n"); | |
16033 | } | |
16034 | ||
6149aea9 PA |
16035 | /* Save information on user settable breakpoints (watchpoints, etc) to |
16036 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
16037 | on each breakpoint and only include the ones for which it returns | |
16038 | non-zero. */ | |
16039 | ||
1042e4c0 | 16040 | static void |
6149aea9 PA |
16041 | save_breakpoints (char *filename, int from_tty, |
16042 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
16043 | { |
16044 | struct breakpoint *tp; | |
6149aea9 | 16045 | int any = 0; |
1042e4c0 | 16046 | struct cleanup *cleanup; |
a7bdde9e | 16047 | struct ui_file *fp; |
6149aea9 | 16048 | int extra_trace_bits = 0; |
1042e4c0 | 16049 | |
6149aea9 PA |
16050 | if (filename == 0 || *filename == 0) |
16051 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
16052 | |
16053 | /* See if we have anything to save. */ | |
6149aea9 | 16054 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 16055 | { |
6149aea9 | 16056 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 16057 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
16058 | continue; |
16059 | ||
16060 | /* If we have a filter, only save the breakpoints it accepts. */ | |
16061 | if (filter && !filter (tp)) | |
16062 | continue; | |
16063 | ||
16064 | any = 1; | |
16065 | ||
16066 | if (is_tracepoint (tp)) | |
16067 | { | |
16068 | extra_trace_bits = 1; | |
16069 | ||
16070 | /* We can stop searching. */ | |
16071 | break; | |
16072 | } | |
1042e4c0 | 16073 | } |
6149aea9 PA |
16074 | |
16075 | if (!any) | |
1042e4c0 | 16076 | { |
6149aea9 | 16077 | warning (_("Nothing to save.")); |
1042e4c0 SS |
16078 | return; |
16079 | } | |
16080 | ||
c718be47 PA |
16081 | filename = tilde_expand (filename); |
16082 | cleanup = make_cleanup (xfree, filename); | |
16083 | fp = gdb_fopen (filename, "w"); | |
059fb39f | 16084 | if (!fp) |
6149aea9 PA |
16085 | error (_("Unable to open file '%s' for saving (%s)"), |
16086 | filename, safe_strerror (errno)); | |
a7bdde9e | 16087 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 16088 | |
6149aea9 PA |
16089 | if (extra_trace_bits) |
16090 | save_trace_state_variables (fp); | |
8bf6485c | 16091 | |
6149aea9 | 16092 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 16093 | { |
6149aea9 | 16094 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 16095 | if (!user_breakpoint_p (tp)) |
6149aea9 | 16096 | continue; |
8bf6485c | 16097 | |
6149aea9 PA |
16098 | /* If we have a filter, only save the breakpoints it accepts. */ |
16099 | if (filter && !filter (tp)) | |
16100 | continue; | |
16101 | ||
348d480f | 16102 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 16103 | |
6149aea9 PA |
16104 | /* Note, we can't rely on tp->number for anything, as we can't |
16105 | assume the recreated breakpoint numbers will match. Use $bpnum | |
16106 | instead. */ | |
16107 | ||
16108 | if (tp->cond_string) | |
16109 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
16110 | ||
16111 | if (tp->ignore_count) | |
16112 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
16113 | ||
2d9442cc | 16114 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 16115 | { |
a7bdde9e VP |
16116 | volatile struct gdb_exception ex; |
16117 | ||
6149aea9 | 16118 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 16119 | |
79a45e25 | 16120 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 16121 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 16122 | { |
79a45e25 | 16123 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 16124 | } |
79a45e25 | 16125 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 16126 | |
a7bdde9e VP |
16127 | if (ex.reason < 0) |
16128 | throw_exception (ex); | |
1042e4c0 | 16129 | |
a7bdde9e | 16130 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 16131 | } |
6149aea9 PA |
16132 | |
16133 | if (tp->enable_state == bp_disabled) | |
16134 | fprintf_unfiltered (fp, "disable\n"); | |
16135 | ||
16136 | /* If this is a multi-location breakpoint, check if the locations | |
16137 | should be individually disabled. Watchpoint locations are | |
16138 | special, and not user visible. */ | |
16139 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
16140 | { | |
16141 | struct bp_location *loc; | |
16142 | int n = 1; | |
16143 | ||
16144 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
16145 | if (!loc->enabled) | |
16146 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
16147 | } | |
1042e4c0 | 16148 | } |
8bf6485c | 16149 | |
6149aea9 | 16150 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
16151 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
16152 | ||
1042e4c0 | 16153 | if (from_tty) |
6149aea9 | 16154 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
c718be47 | 16155 | do_cleanups (cleanup); |
6149aea9 PA |
16156 | } |
16157 | ||
16158 | /* The `save breakpoints' command. */ | |
16159 | ||
16160 | static void | |
16161 | save_breakpoints_command (char *args, int from_tty) | |
16162 | { | |
16163 | save_breakpoints (args, from_tty, NULL); | |
16164 | } | |
16165 | ||
16166 | /* The `save tracepoints' command. */ | |
16167 | ||
16168 | static void | |
16169 | save_tracepoints_command (char *args, int from_tty) | |
16170 | { | |
16171 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
16172 | } |
16173 | ||
16174 | /* Create a vector of all tracepoints. */ | |
16175 | ||
16176 | VEC(breakpoint_p) * | |
eeae04df | 16177 | all_tracepoints (void) |
1042e4c0 SS |
16178 | { |
16179 | VEC(breakpoint_p) *tp_vec = 0; | |
16180 | struct breakpoint *tp; | |
16181 | ||
16182 | ALL_TRACEPOINTS (tp) | |
16183 | { | |
16184 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
16185 | } | |
16186 | ||
16187 | return tp_vec; | |
16188 | } | |
16189 | ||
c906108c | 16190 | \f |
4a64f543 MS |
16191 | /* This help string is used for the break, hbreak, tbreak and thbreak |
16192 | commands. It is defined as a macro to prevent duplication. | |
16193 | COMMAND should be a string constant containing the name of the | |
16194 | command. */ | |
31e2b00f | 16195 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
16196 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
16197 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
16198 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
16199 | guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\ | |
31e2b00f AS |
16200 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
16201 | If a line number is specified, break at start of code for that line.\n\ | |
16202 | If a function is specified, break at start of code for that function.\n\ | |
16203 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
16204 | With no LOCATION, uses current execution address of the selected\n\ |
16205 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
16206 | \n\ |
16207 | THREADNUM is the number from \"info threads\".\n\ | |
16208 | CONDITION is a boolean expression.\n\ | |
16209 | \n\ | |
d41c0fc8 PA |
16210 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
16211 | conditions are different.\n\ | |
31e2b00f AS |
16212 | \n\ |
16213 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
16214 | ||
44feb3ce TT |
16215 | /* List of subcommands for "catch". */ |
16216 | static struct cmd_list_element *catch_cmdlist; | |
16217 | ||
16218 | /* List of subcommands for "tcatch". */ | |
16219 | static struct cmd_list_element *tcatch_cmdlist; | |
16220 | ||
9ac4176b | 16221 | void |
44feb3ce | 16222 | add_catch_command (char *name, char *docstring, |
82ae6c8d | 16223 | cmd_sfunc_ftype *sfunc, |
625e8578 | 16224 | completer_ftype *completer, |
44feb3ce TT |
16225 | void *user_data_catch, |
16226 | void *user_data_tcatch) | |
16227 | { | |
16228 | struct cmd_list_element *command; | |
16229 | ||
16230 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
16231 | &catch_cmdlist); | |
16232 | set_cmd_sfunc (command, sfunc); | |
16233 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 16234 | set_cmd_completer (command, completer); |
44feb3ce TT |
16235 | |
16236 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
16237 | &tcatch_cmdlist); | |
16238 | set_cmd_sfunc (command, sfunc); | |
16239 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 16240 | set_cmd_completer (command, completer); |
44feb3ce TT |
16241 | } |
16242 | ||
6c95b8df | 16243 | static void |
a79b8f6e | 16244 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 16245 | { |
fa3064dd YQ |
16246 | struct catch_syscall_inferior_data *inf_data |
16247 | = get_catch_syscall_inferior_data (inf); | |
16248 | ||
16249 | inf_data->total_syscalls_count = 0; | |
16250 | inf_data->any_syscall_count = 0; | |
16251 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
16252 | } |
16253 | ||
6149aea9 PA |
16254 | static void |
16255 | save_command (char *arg, int from_tty) | |
16256 | { | |
3e43a32a MS |
16257 | printf_unfiltered (_("\"save\" must be followed by " |
16258 | "the name of a save subcommand.\n")); | |
635c7e8a | 16259 | help_list (save_cmdlist, "save ", all_commands, gdb_stdout); |
6149aea9 PA |
16260 | } |
16261 | ||
84f4c1fe PM |
16262 | struct breakpoint * |
16263 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
16264 | void *data) | |
16265 | { | |
35df4500 | 16266 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 16267 | |
35df4500 | 16268 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
16269 | { |
16270 | if ((*callback) (b, data)) | |
16271 | return b; | |
16272 | } | |
16273 | ||
16274 | return NULL; | |
16275 | } | |
16276 | ||
0574c78f GB |
16277 | /* Zero if any of the breakpoint's locations could be a location where |
16278 | functions have been inlined, nonzero otherwise. */ | |
16279 | ||
16280 | static int | |
16281 | is_non_inline_function (struct breakpoint *b) | |
16282 | { | |
16283 | /* The shared library event breakpoint is set on the address of a | |
16284 | non-inline function. */ | |
16285 | if (b->type == bp_shlib_event) | |
16286 | return 1; | |
16287 | ||
16288 | return 0; | |
16289 | } | |
16290 | ||
16291 | /* Nonzero if the specified PC cannot be a location where functions | |
16292 | have been inlined. */ | |
16293 | ||
16294 | int | |
09ac7c10 TT |
16295 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
16296 | const struct target_waitstatus *ws) | |
0574c78f GB |
16297 | { |
16298 | struct breakpoint *b; | |
16299 | struct bp_location *bl; | |
16300 | ||
16301 | ALL_BREAKPOINTS (b) | |
16302 | { | |
16303 | if (!is_non_inline_function (b)) | |
16304 | continue; | |
16305 | ||
16306 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
16307 | { | |
16308 | if (!bl->shlib_disabled | |
09ac7c10 | 16309 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
16310 | return 1; |
16311 | } | |
16312 | } | |
16313 | ||
16314 | return 0; | |
16315 | } | |
16316 | ||
2f202fde JK |
16317 | /* Remove any references to OBJFILE which is going to be freed. */ |
16318 | ||
16319 | void | |
16320 | breakpoint_free_objfile (struct objfile *objfile) | |
16321 | { | |
16322 | struct bp_location **locp, *loc; | |
16323 | ||
16324 | ALL_BP_LOCATIONS (loc, locp) | |
16325 | if (loc->symtab != NULL && loc->symtab->objfile == objfile) | |
16326 | loc->symtab = NULL; | |
16327 | } | |
16328 | ||
2060206e PA |
16329 | void |
16330 | initialize_breakpoint_ops (void) | |
16331 | { | |
16332 | static int initialized = 0; | |
16333 | ||
16334 | struct breakpoint_ops *ops; | |
16335 | ||
16336 | if (initialized) | |
16337 | return; | |
16338 | initialized = 1; | |
16339 | ||
16340 | /* The breakpoint_ops structure to be inherit by all kinds of | |
16341 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
16342 | internal and momentary breakpoints, etc.). */ | |
16343 | ops = &bkpt_base_breakpoint_ops; | |
16344 | *ops = base_breakpoint_ops; | |
16345 | ops->re_set = bkpt_re_set; | |
16346 | ops->insert_location = bkpt_insert_location; | |
16347 | ops->remove_location = bkpt_remove_location; | |
16348 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
16349 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
16350 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
16351 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
16352 | |
16353 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
16354 | ops = &bkpt_breakpoint_ops; | |
16355 | *ops = bkpt_base_breakpoint_ops; | |
16356 | ops->re_set = bkpt_re_set; | |
16357 | ops->resources_needed = bkpt_resources_needed; | |
16358 | ops->print_it = bkpt_print_it; | |
16359 | ops->print_mention = bkpt_print_mention; | |
16360 | ops->print_recreate = bkpt_print_recreate; | |
16361 | ||
16362 | /* Ranged breakpoints. */ | |
16363 | ops = &ranged_breakpoint_ops; | |
16364 | *ops = bkpt_breakpoint_ops; | |
16365 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
16366 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
16367 | ops->print_it = print_it_ranged_breakpoint; | |
16368 | ops->print_one = print_one_ranged_breakpoint; | |
16369 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
16370 | ops->print_mention = print_mention_ranged_breakpoint; | |
16371 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
16372 | ||
16373 | /* Internal breakpoints. */ | |
16374 | ops = &internal_breakpoint_ops; | |
16375 | *ops = bkpt_base_breakpoint_ops; | |
16376 | ops->re_set = internal_bkpt_re_set; | |
16377 | ops->check_status = internal_bkpt_check_status; | |
16378 | ops->print_it = internal_bkpt_print_it; | |
16379 | ops->print_mention = internal_bkpt_print_mention; | |
16380 | ||
16381 | /* Momentary breakpoints. */ | |
16382 | ops = &momentary_breakpoint_ops; | |
16383 | *ops = bkpt_base_breakpoint_ops; | |
16384 | ops->re_set = momentary_bkpt_re_set; | |
16385 | ops->check_status = momentary_bkpt_check_status; | |
16386 | ops->print_it = momentary_bkpt_print_it; | |
16387 | ops->print_mention = momentary_bkpt_print_mention; | |
16388 | ||
e2e4d78b JK |
16389 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
16390 | ops = &longjmp_breakpoint_ops; | |
16391 | *ops = momentary_breakpoint_ops; | |
16392 | ops->dtor = longjmp_bkpt_dtor; | |
16393 | ||
55aa24fb SDJ |
16394 | /* Probe breakpoints. */ |
16395 | ops = &bkpt_probe_breakpoint_ops; | |
16396 | *ops = bkpt_breakpoint_ops; | |
16397 | ops->insert_location = bkpt_probe_insert_location; | |
16398 | ops->remove_location = bkpt_probe_remove_location; | |
16399 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
16400 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
16401 | ||
2060206e PA |
16402 | /* Watchpoints. */ |
16403 | ops = &watchpoint_breakpoint_ops; | |
16404 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 16405 | ops->dtor = dtor_watchpoint; |
2060206e PA |
16406 | ops->re_set = re_set_watchpoint; |
16407 | ops->insert_location = insert_watchpoint; | |
16408 | ops->remove_location = remove_watchpoint; | |
16409 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
16410 | ops->check_status = check_status_watchpoint; | |
16411 | ops->resources_needed = resources_needed_watchpoint; | |
16412 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
16413 | ops->print_it = print_it_watchpoint; | |
16414 | ops->print_mention = print_mention_watchpoint; | |
16415 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 16416 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
16417 | |
16418 | /* Masked watchpoints. */ | |
16419 | ops = &masked_watchpoint_breakpoint_ops; | |
16420 | *ops = watchpoint_breakpoint_ops; | |
16421 | ops->insert_location = insert_masked_watchpoint; | |
16422 | ops->remove_location = remove_masked_watchpoint; | |
16423 | ops->resources_needed = resources_needed_masked_watchpoint; | |
16424 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
16425 | ops->print_it = print_it_masked_watchpoint; | |
16426 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
16427 | ops->print_mention = print_mention_masked_watchpoint; | |
16428 | ops->print_recreate = print_recreate_masked_watchpoint; | |
16429 | ||
16430 | /* Tracepoints. */ | |
16431 | ops = &tracepoint_breakpoint_ops; | |
16432 | *ops = base_breakpoint_ops; | |
16433 | ops->re_set = tracepoint_re_set; | |
16434 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
16435 | ops->print_one_detail = tracepoint_print_one_detail; | |
16436 | ops->print_mention = tracepoint_print_mention; | |
16437 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
16438 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
16439 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
16440 | ops->decode_linespec = tracepoint_decode_linespec; | |
16441 | ||
55aa24fb SDJ |
16442 | /* Probe tracepoints. */ |
16443 | ops = &tracepoint_probe_breakpoint_ops; | |
16444 | *ops = tracepoint_breakpoint_ops; | |
16445 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
16446 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
16447 | ||
983af33b SDJ |
16448 | /* Static tracepoints with marker (`-m'). */ |
16449 | ops = &strace_marker_breakpoint_ops; | |
16450 | *ops = tracepoint_breakpoint_ops; | |
16451 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
16452 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
16453 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
16454 | |
16455 | /* Fork catchpoints. */ | |
16456 | ops = &catch_fork_breakpoint_ops; | |
16457 | *ops = base_breakpoint_ops; | |
16458 | ops->insert_location = insert_catch_fork; | |
16459 | ops->remove_location = remove_catch_fork; | |
16460 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
16461 | ops->print_it = print_it_catch_fork; | |
16462 | ops->print_one = print_one_catch_fork; | |
16463 | ops->print_mention = print_mention_catch_fork; | |
16464 | ops->print_recreate = print_recreate_catch_fork; | |
16465 | ||
16466 | /* Vfork catchpoints. */ | |
16467 | ops = &catch_vfork_breakpoint_ops; | |
16468 | *ops = base_breakpoint_ops; | |
16469 | ops->insert_location = insert_catch_vfork; | |
16470 | ops->remove_location = remove_catch_vfork; | |
16471 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
16472 | ops->print_it = print_it_catch_vfork; | |
16473 | ops->print_one = print_one_catch_vfork; | |
16474 | ops->print_mention = print_mention_catch_vfork; | |
16475 | ops->print_recreate = print_recreate_catch_vfork; | |
16476 | ||
16477 | /* Exec catchpoints. */ | |
16478 | ops = &catch_exec_breakpoint_ops; | |
16479 | *ops = base_breakpoint_ops; | |
16480 | ops->dtor = dtor_catch_exec; | |
16481 | ops->insert_location = insert_catch_exec; | |
16482 | ops->remove_location = remove_catch_exec; | |
16483 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
16484 | ops->print_it = print_it_catch_exec; | |
16485 | ops->print_one = print_one_catch_exec; | |
16486 | ops->print_mention = print_mention_catch_exec; | |
16487 | ops->print_recreate = print_recreate_catch_exec; | |
16488 | ||
16489 | /* Syscall catchpoints. */ | |
16490 | ops = &catch_syscall_breakpoint_ops; | |
16491 | *ops = base_breakpoint_ops; | |
16492 | ops->dtor = dtor_catch_syscall; | |
16493 | ops->insert_location = insert_catch_syscall; | |
16494 | ops->remove_location = remove_catch_syscall; | |
16495 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
16496 | ops->print_it = print_it_catch_syscall; | |
16497 | ops->print_one = print_one_catch_syscall; | |
16498 | ops->print_mention = print_mention_catch_syscall; | |
16499 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
16500 | |
16501 | /* Solib-related catchpoints. */ | |
16502 | ops = &catch_solib_breakpoint_ops; | |
16503 | *ops = base_breakpoint_ops; | |
16504 | ops->dtor = dtor_catch_solib; | |
16505 | ops->insert_location = insert_catch_solib; | |
16506 | ops->remove_location = remove_catch_solib; | |
16507 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
16508 | ops->check_status = check_status_catch_solib; | |
16509 | ops->print_it = print_it_catch_solib; | |
16510 | ops->print_one = print_one_catch_solib; | |
16511 | ops->print_mention = print_mention_catch_solib; | |
16512 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
16513 | |
16514 | ops = &dprintf_breakpoint_ops; | |
16515 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 16516 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
16517 | ops->resources_needed = bkpt_resources_needed; |
16518 | ops->print_it = bkpt_print_it; | |
16519 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 16520 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 16521 | ops->after_condition_true = dprintf_after_condition_true; |
cd1608cc | 16522 | ops->breakpoint_hit = dprintf_breakpoint_hit; |
2060206e PA |
16523 | } |
16524 | ||
8bfd80db YQ |
16525 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
16526 | ||
16527 | static struct cmd_list_element *enablebreaklist = NULL; | |
16528 | ||
c906108c | 16529 | void |
fba45db2 | 16530 | _initialize_breakpoint (void) |
c906108c SS |
16531 | { |
16532 | struct cmd_list_element *c; | |
16533 | ||
2060206e PA |
16534 | initialize_breakpoint_ops (); |
16535 | ||
84acb35a | 16536 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 16537 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
6c95b8df | 16538 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 16539 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 16540 | |
55aa24fb SDJ |
16541 | breakpoint_objfile_key |
16542 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 16543 | |
fa3064dd | 16544 | catch_syscall_inferior_data |
8e260fc0 TT |
16545 | = register_inferior_data_with_cleanup (NULL, |
16546 | catch_syscall_inferior_data_cleanup); | |
fa3064dd | 16547 | |
c906108c SS |
16548 | breakpoint_chain = 0; |
16549 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
16550 | before a breakpoint is set. */ | |
16551 | breakpoint_count = 0; | |
16552 | ||
1042e4c0 SS |
16553 | tracepoint_count = 0; |
16554 | ||
1bedd215 AC |
16555 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
16556 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
16557 | Usage is `ignore N COUNT'.")); | |
c906108c | 16558 | if (xdb_commands) |
c5aa993b | 16559 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 16560 | |
1bedd215 AC |
16561 | add_com ("commands", class_breakpoint, commands_command, _("\ |
16562 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
16563 | Give breakpoint number as argument after \"commands\".\n\ |
16564 | With no argument, the targeted breakpoint is the last one set.\n\ | |
16565 | The commands themselves follow starting on the next line.\n\ | |
16566 | Type a line containing \"end\" to indicate the end of them.\n\ | |
16567 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 16568 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 16569 | |
d55637df | 16570 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 16571 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 16572 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 16573 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 16574 | set_cmd_completer (c, condition_completer); |
c906108c | 16575 | |
1bedd215 | 16576 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 16577 | Set a temporary breakpoint.\n\ |
c906108c SS |
16578 | Like \"break\" except the breakpoint is only temporary,\n\ |
16579 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
16580 | by using \"enable delete\" on the breakpoint number.\n\ |
16581 | \n" | |
16582 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 16583 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16584 | |
1bedd215 | 16585 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 16586 | Set a hardware assisted breakpoint.\n\ |
c906108c | 16587 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
16588 | some target hardware may not have this support.\n\ |
16589 | \n" | |
16590 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 16591 | set_cmd_completer (c, location_completer); |
c906108c | 16592 | |
1bedd215 | 16593 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 16594 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 16595 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
16596 | so it will be deleted when hit.\n\ |
16597 | \n" | |
16598 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 16599 | set_cmd_completer (c, location_completer); |
c906108c | 16600 | |
1bedd215 AC |
16601 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
16602 | Enable some breakpoints.\n\ | |
c906108c SS |
16603 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16604 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
16605 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16606 | With a subcommand you can enable temporarily."), |
c906108c SS |
16607 | &enablelist, "enable ", 1, &cmdlist); |
16608 | if (xdb_commands) | |
1bedd215 AC |
16609 | add_com ("ab", class_breakpoint, enable_command, _("\ |
16610 | Enable some breakpoints.\n\ | |
c906108c SS |
16611 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16612 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
16613 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16614 | With a subcommand you can enable temporarily.")); |
c906108c SS |
16615 | |
16616 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
16617 | ||
84951ab5 | 16618 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 16619 | Enable some breakpoints.\n\ |
c906108c SS |
16620 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16621 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16622 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 16623 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 16624 | |
1a966eab AC |
16625 | add_cmd ("once", no_class, enable_once_command, _("\ |
16626 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16627 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
16628 | &enablebreaklist); |
16629 | ||
1a966eab AC |
16630 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16631 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16632 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16633 | &enablebreaklist); |
16634 | ||
816338b5 SS |
16635 | add_cmd ("count", no_class, enable_count_command, _("\ |
16636 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16637 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16638 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
16639 | &enablebreaklist); | |
16640 | ||
1a966eab AC |
16641 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16642 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16643 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16644 | &enablelist); |
16645 | ||
1a966eab AC |
16646 | add_cmd ("once", no_class, enable_once_command, _("\ |
16647 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16648 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
16649 | &enablelist); |
16650 | ||
16651 | add_cmd ("count", no_class, enable_count_command, _("\ | |
16652 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16653 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16654 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
16655 | &enablelist); |
16656 | ||
1bedd215 AC |
16657 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
16658 | Disable some breakpoints.\n\ | |
c906108c SS |
16659 | Arguments are breakpoint numbers with spaces in between.\n\ |
16660 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16661 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16662 | &disablelist, "disable ", 1, &cmdlist); |
16663 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16664 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
16665 | if (xdb_commands) | |
1bedd215 AC |
16666 | add_com ("sb", class_breakpoint, disable_command, _("\ |
16667 | Disable some breakpoints.\n\ | |
c906108c SS |
16668 | Arguments are breakpoint numbers with spaces in between.\n\ |
16669 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16670 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 16671 | |
1a966eab AC |
16672 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16673 | Disable some breakpoints.\n\ | |
c906108c SS |
16674 | Arguments are breakpoint numbers with spaces in between.\n\ |
16675 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16676 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16677 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16678 | &disablelist); |
16679 | ||
1bedd215 AC |
16680 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16681 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16682 | Arguments are breakpoint numbers with spaces in between.\n\ |
16683 | To delete all breakpoints, give no argument.\n\ | |
16684 | \n\ | |
16685 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16686 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16687 | &deletelist, "delete ", 1, &cmdlist); |
16688 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16689 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16690 | if (xdb_commands) |
1bedd215 AC |
16691 | add_com ("db", class_breakpoint, delete_command, _("\ |
16692 | Delete some breakpoints.\n\ | |
c906108c | 16693 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 16694 | To delete all breakpoints, give no argument.\n")); |
c906108c | 16695 | |
1a966eab AC |
16696 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16697 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16698 | Arguments are breakpoint numbers with spaces in between.\n\ |
16699 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16700 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16701 | &deletelist); |
16702 | ||
1bedd215 AC |
16703 | add_com ("clear", class_breakpoint, clear_command, _("\ |
16704 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
16705 | Argument may be line number, function name, or \"*\" and an address.\n\ |
16706 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
16707 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
16708 | If an address is specified, breakpoints at that address are cleared.\n\ |
16709 | \n\ | |
16710 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
16711 | is executing in.\n\ |
16712 | \n\ | |
1bedd215 | 16713 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16714 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16715 | |
1bedd215 | 16716 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
16717 | Set breakpoint at specified line or function.\n" |
16718 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 16719 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16720 | |
c906108c SS |
16721 | add_com_alias ("b", "break", class_run, 1); |
16722 | add_com_alias ("br", "break", class_run, 1); | |
16723 | add_com_alias ("bre", "break", class_run, 1); | |
16724 | add_com_alias ("brea", "break", class_run, 1); | |
16725 | ||
7681d515 PM |
16726 | if (xdb_commands) |
16727 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
16728 | |
16729 | if (dbx_commands) | |
16730 | { | |
1bedd215 AC |
16731 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16732 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16733 | &stoplist, "stop ", 1, &cmdlist); |
16734 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16735 | _("Break in function or address."), &stoplist); |
c5aa993b | 16736 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16737 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16738 | add_com ("status", class_info, breakpoints_info, _("\ |
16739 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16740 | The \"Type\" column indicates one of:\n\ |
16741 | \tbreakpoint - normal breakpoint\n\ | |
16742 | \twatchpoint - watchpoint\n\ | |
16743 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16744 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16745 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16746 | address and file/line number respectively.\n\ |
16747 | \n\ | |
16748 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16749 | are set to the address of the last breakpoint listed unless the command\n\ |
16750 | is prefixed with \"server \".\n\n\ | |
c906108c | 16751 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16752 | breakpoint set.")); |
c906108c SS |
16753 | } |
16754 | ||
1bedd215 | 16755 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16756 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16757 | The \"Type\" column indicates one of:\n\ |
16758 | \tbreakpoint - normal breakpoint\n\ | |
16759 | \twatchpoint - watchpoint\n\ | |
16760 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16761 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16762 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16763 | address and file/line number respectively.\n\ |
16764 | \n\ | |
16765 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16766 | are set to the address of the last breakpoint listed unless the command\n\ |
16767 | is prefixed with \"server \".\n\n\ | |
c906108c | 16768 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16769 | breakpoint set.")); |
c906108c | 16770 | |
6b04bdb7 MS |
16771 | add_info_alias ("b", "breakpoints", 1); |
16772 | ||
c906108c | 16773 | if (xdb_commands) |
1bedd215 AC |
16774 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
16775 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16776 | The \"Type\" column indicates one of:\n\ |
16777 | \tbreakpoint - normal breakpoint\n\ | |
16778 | \twatchpoint - watchpoint\n\ | |
16779 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16780 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16781 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16782 | address and file/line number respectively.\n\ |
16783 | \n\ | |
16784 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16785 | are set to the address of the last breakpoint listed unless the command\n\ |
16786 | is prefixed with \"server \".\n\n\ | |
c906108c | 16787 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16788 | breakpoint set.")); |
c906108c | 16789 | |
1a966eab AC |
16790 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16791 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16792 | The \"Type\" column indicates one of:\n\ |
16793 | \tbreakpoint - normal breakpoint\n\ | |
16794 | \twatchpoint - watchpoint\n\ | |
16795 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16796 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16797 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16798 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16799 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16800 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16801 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16802 | address and file/line number respectively.\n\ |
16803 | \n\ | |
16804 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16805 | are set to the address of the last breakpoint listed unless the command\n\ |
16806 | is prefixed with \"server \".\n\n\ | |
c906108c | 16807 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16808 | breakpoint set."), |
c906108c SS |
16809 | &maintenanceinfolist); |
16810 | ||
44feb3ce TT |
16811 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16812 | Set catchpoints to catch events."), | |
16813 | &catch_cmdlist, "catch ", | |
16814 | 0/*allow-unknown*/, &cmdlist); | |
16815 | ||
16816 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16817 | Set temporary catchpoints to catch events."), | |
16818 | &tcatch_cmdlist, "tcatch ", | |
16819 | 0/*allow-unknown*/, &cmdlist); | |
16820 | ||
44feb3ce TT |
16821 | add_catch_command ("fork", _("Catch calls to fork."), |
16822 | catch_fork_command_1, | |
a96d9b2e | 16823 | NULL, |
44feb3ce TT |
16824 | (void *) (uintptr_t) catch_fork_permanent, |
16825 | (void *) (uintptr_t) catch_fork_temporary); | |
16826 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16827 | catch_fork_command_1, | |
a96d9b2e | 16828 | NULL, |
44feb3ce TT |
16829 | (void *) (uintptr_t) catch_vfork_permanent, |
16830 | (void *) (uintptr_t) catch_vfork_temporary); | |
16831 | add_catch_command ("exec", _("Catch calls to exec."), | |
16832 | catch_exec_command_1, | |
a96d9b2e SDJ |
16833 | NULL, |
16834 | CATCH_PERMANENT, | |
16835 | CATCH_TEMPORARY); | |
edcc5120 TT |
16836 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16837 | Usage: catch load [REGEX]\n\ | |
16838 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16839 | catch_load_command_1, | |
16840 | NULL, | |
16841 | CATCH_PERMANENT, | |
16842 | CATCH_TEMPORARY); | |
16843 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16844 | Usage: catch unload [REGEX]\n\ | |
16845 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16846 | catch_unload_command_1, | |
16847 | NULL, | |
16848 | CATCH_PERMANENT, | |
16849 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
16850 | add_catch_command ("syscall", _("\ |
16851 | Catch system calls by their names and/or numbers.\n\ | |
16852 | Arguments say which system calls to catch. If no arguments\n\ | |
16853 | are given, every system call will be caught.\n\ | |
16854 | Arguments, if given, should be one or more system call names\n\ | |
16855 | (if your system supports that), or system call numbers."), | |
16856 | catch_syscall_command_1, | |
16857 | catch_syscall_completer, | |
44feb3ce TT |
16858 | CATCH_PERMANENT, |
16859 | CATCH_TEMPORARY); | |
c5aa993b | 16860 | |
1bedd215 AC |
16861 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16862 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16863 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16864 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16865 | an expression changes.\n\ |
16866 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16867 | the memory to which it refers.")); | |
65d12d83 | 16868 | set_cmd_completer (c, expression_completer); |
c906108c | 16869 | |
1bedd215 AC |
16870 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16871 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16872 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16873 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16874 | an expression is read.\n\ |
16875 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16876 | the memory to which it refers.")); | |
65d12d83 | 16877 | set_cmd_completer (c, expression_completer); |
c906108c | 16878 | |
1bedd215 AC |
16879 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16880 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16881 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16882 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16883 | an expression is either read or written.\n\ |
16884 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16885 | the memory to which it refers.")); | |
65d12d83 | 16886 | set_cmd_completer (c, expression_completer); |
c906108c | 16887 | |
d77f58be | 16888 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16889 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16890 | |
920d2a44 AC |
16891 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16892 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16893 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16894 | &can_use_hw_watchpoints, _("\ | |
16895 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16896 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16897 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16898 | such is available. (However, any hardware watchpoints that were\n\ | |
16899 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16900 | hardware.)"), |
16901 | NULL, | |
920d2a44 | 16902 | show_can_use_hw_watchpoints, |
85c07804 | 16903 | &setlist, &showlist); |
c906108c SS |
16904 | |
16905 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16906 | |
1042e4c0 SS |
16907 | /* Tracepoint manipulation commands. */ |
16908 | ||
16909 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16910 | Set a tracepoint at specified line or function.\n\ | |
16911 | \n" | |
16912 | BREAK_ARGS_HELP ("trace") "\n\ | |
16913 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16914 | set_cmd_completer (c, location_completer); | |
16915 | ||
16916 | add_com_alias ("tp", "trace", class_alias, 0); | |
16917 | add_com_alias ("tr", "trace", class_alias, 1); | |
16918 | add_com_alias ("tra", "trace", class_alias, 1); | |
16919 | add_com_alias ("trac", "trace", class_alias, 1); | |
16920 | ||
7a697b8d SS |
16921 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16922 | Set a fast tracepoint at specified line or function.\n\ | |
16923 | \n" | |
16924 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16925 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16926 | set_cmd_completer (c, location_completer); | |
16927 | ||
0fb4aa4b PA |
16928 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16929 | Set a static tracepoint at specified line, function or marker.\n\ | |
16930 | \n\ | |
16931 | strace [LOCATION] [if CONDITION]\n\ | |
16932 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16933 | or -m MARKER_ID.\n\ | |
16934 | If a line number is specified, probe the marker at start of code\n\ | |
16935 | for that line. If a function is specified, probe the marker at start\n\ | |
16936 | of code for that function. If an address is specified, probe the marker\n\ | |
16937 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16938 | with that name. With no LOCATION, uses current execution address of\n\ | |
16939 | the selected stack frame.\n\ | |
16940 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16941 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16942 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16943 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16944 | \n\ | |
16945 | CONDITION is a boolean expression.\n\ | |
16946 | \n\ | |
d41c0fc8 PA |
16947 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16948 | conditions are different.\n\ | |
0fb4aa4b PA |
16949 | \n\ |
16950 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16951 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16952 | set_cmd_completer (c, location_completer); | |
16953 | ||
1042e4c0 | 16954 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16955 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16956 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16957 | last tracepoint set.")); | |
16958 | ||
16959 | add_info_alias ("tp", "tracepoints", 1); | |
16960 | ||
16961 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16962 | Delete specified tracepoints.\n\ | |
16963 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16964 | No argument means delete all tracepoints."), | |
16965 | &deletelist); | |
7e20dfcd | 16966 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16967 | |
16968 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16969 | Disable specified tracepoints.\n\ | |
16970 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16971 | No argument means disable all tracepoints."), | |
16972 | &disablelist); | |
16973 | deprecate_cmd (c, "disable"); | |
16974 | ||
16975 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16976 | Enable specified tracepoints.\n\ | |
16977 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16978 | No argument means enable all tracepoints."), | |
16979 | &enablelist); | |
16980 | deprecate_cmd (c, "enable"); | |
16981 | ||
16982 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16983 | Set the passcount for a tracepoint.\n\ | |
16984 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16985 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16986 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16987 | ||
6149aea9 PA |
16988 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16989 | _("Save breakpoint definitions as a script."), | |
16990 | &save_cmdlist, "save ", | |
16991 | 0/*allow-unknown*/, &cmdlist); | |
16992 | ||
16993 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16994 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16995 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16996 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16997 | session to restore them."), | |
16998 | &save_cmdlist); | |
16999 | set_cmd_completer (c, filename_completer); | |
17000 | ||
17001 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 17002 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
17003 | Use the 'source' command in another debug session to restore them."), |
17004 | &save_cmdlist); | |
1042e4c0 SS |
17005 | set_cmd_completer (c, filename_completer); |
17006 | ||
6149aea9 PA |
17007 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
17008 | deprecate_cmd (c, "save tracepoints"); | |
17009 | ||
1bedd215 | 17010 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
17011 | Breakpoint specific settings\n\ |
17012 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 17013 | pending breakpoint behavior"), |
fa8d40ab JJ |
17014 | &breakpoint_set_cmdlist, "set breakpoint ", |
17015 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 17016 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
17017 | Breakpoint specific settings\n\ |
17018 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 17019 | pending breakpoint behavior"), |
fa8d40ab JJ |
17020 | &breakpoint_show_cmdlist, "show breakpoint ", |
17021 | 0/*allow-unknown*/, &showlist); | |
17022 | ||
7915a72c AC |
17023 | add_setshow_auto_boolean_cmd ("pending", no_class, |
17024 | &pending_break_support, _("\ | |
17025 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
17026 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
17027 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
17028 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
17029 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 17030 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 17031 | NULL, |
920d2a44 | 17032 | show_pending_break_support, |
6e1d7d6c AC |
17033 | &breakpoint_set_cmdlist, |
17034 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
17035 | |
17036 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
17037 | |
17038 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
17039 | &automatic_hardware_breakpoints, _("\ | |
17040 | Set automatic usage of hardware breakpoints."), _("\ | |
17041 | Show automatic usage of hardware breakpoints."), _("\ | |
17042 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
17043 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
17044 | a warning will be emitted for such breakpoints."), | |
17045 | NULL, | |
17046 | show_automatic_hardware_breakpoints, | |
17047 | &breakpoint_set_cmdlist, | |
17048 | &breakpoint_show_cmdlist); | |
74960c60 | 17049 | |
a25a5a45 PA |
17050 | add_setshow_boolean_cmd ("always-inserted", class_support, |
17051 | &always_inserted_mode, _("\ | |
74960c60 VP |
17052 | Set mode for inserting breakpoints."), _("\ |
17053 | Show mode for inserting breakpoints."), _("\ | |
a25a5a45 PA |
17054 | When this mode is on, breakpoints are inserted immediately as soon as\n\ |
17055 | they're created, kept inserted even when execution stops, and removed\n\ | |
17056 | only when the user deletes them. When this mode is off (the default),\n\ | |
17057 | breakpoints are inserted only when execution continues, and removed\n\ | |
17058 | when execution stops."), | |
72d0e2c5 YQ |
17059 | NULL, |
17060 | &show_always_inserted_mode, | |
17061 | &breakpoint_set_cmdlist, | |
17062 | &breakpoint_show_cmdlist); | |
f1310107 | 17063 | |
b775012e LM |
17064 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
17065 | condition_evaluation_enums, | |
17066 | &condition_evaluation_mode_1, _("\ | |
17067 | Set mode of breakpoint condition evaluation."), _("\ | |
17068 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 17069 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
17070 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
17071 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
17072 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
17073 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
17074 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
17075 | be set to \"gdb\""), | |
17076 | &set_condition_evaluation_mode, | |
17077 | &show_condition_evaluation_mode, | |
17078 | &breakpoint_set_cmdlist, | |
17079 | &breakpoint_show_cmdlist); | |
17080 | ||
f1310107 TJB |
17081 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
17082 | Set a breakpoint for an address range.\n\ | |
17083 | break-range START-LOCATION, END-LOCATION\n\ | |
17084 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
17085 | LINENUM, for that line in the current file,\n\ | |
17086 | FILE:LINENUM, for that line in that file,\n\ | |
17087 | +OFFSET, for that number of lines after the current line\n\ | |
17088 | or the start of the range\n\ | |
17089 | FUNCTION, for the first line in that function,\n\ | |
17090 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
17091 | *ADDRESS, for the instruction at that address.\n\ | |
17092 | \n\ | |
17093 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
17094 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
17095 | range (including START-LOCATION and END-LOCATION).")); | |
17096 | ||
e7e0cddf SS |
17097 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
17098 | Set a dynamic printf at specified line or function.\n\ | |
17099 | dprintf location,format string,arg1,arg2,...\n\ | |
17100 | location may be a line number, function name, or \"*\" and an address.\n\ | |
17101 | If a line number is specified, break at start of code for that line.\n\ | |
0e4777df | 17102 | If a function is specified, break at start of code for that function.")); |
e7e0cddf SS |
17103 | set_cmd_completer (c, location_completer); |
17104 | ||
17105 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
17106 | dprintf_style_enums, &dprintf_style, _("\ | |
17107 | Set the style of usage for dynamic printf."), _("\ | |
17108 | Show the style of usage for dynamic printf."), _("\ | |
17109 | This setting chooses how GDB will do a dynamic printf.\n\ | |
17110 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
17111 | console, as with the \"printf\" command.\n\ | |
17112 | If the value is \"call\", the print is done by calling a function in your\n\ | |
17113 | program; by default printf(), but you can choose a different function or\n\ | |
17114 | output stream by setting dprintf-function and dprintf-channel."), | |
17115 | update_dprintf_commands, NULL, | |
17116 | &setlist, &showlist); | |
17117 | ||
17118 | dprintf_function = xstrdup ("printf"); | |
17119 | add_setshow_string_cmd ("dprintf-function", class_support, | |
17120 | &dprintf_function, _("\ | |
17121 | Set the function to use for dynamic printf"), _("\ | |
17122 | Show the function to use for dynamic printf"), NULL, | |
17123 | update_dprintf_commands, NULL, | |
17124 | &setlist, &showlist); | |
17125 | ||
17126 | dprintf_channel = xstrdup (""); | |
17127 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
17128 | &dprintf_channel, _("\ | |
17129 | Set the channel to use for dynamic printf"), _("\ | |
17130 | Show the channel to use for dynamic printf"), NULL, | |
17131 | update_dprintf_commands, NULL, | |
17132 | &setlist, &showlist); | |
17133 | ||
d3ce09f5 SS |
17134 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
17135 | &disconnected_dprintf, _("\ | |
17136 | Set whether dprintf continues after GDB disconnects."), _("\ | |
17137 | Show whether dprintf continues after GDB disconnects."), _("\ | |
17138 | Use this to let dprintf commands continue to hit and produce output\n\ | |
17139 | even if GDB disconnects or detaches from the target."), | |
17140 | NULL, | |
17141 | NULL, | |
17142 | &setlist, &showlist); | |
17143 | ||
17144 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
17145 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
17146 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
17147 | ||
765dc015 | 17148 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
17149 | |
17150 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 17151 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 17152 | } |