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" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
0e9f083f | 38 | #include <string.h> |
50f182aa | 39 | #include "gdb-demangle.h" |
0ba1096a | 40 | #include "filenames.h" |
c906108c SS |
41 | #include "annotate.h" |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
a77053c2 | 52 | #include "solib.h" |
84acb35a JJ |
53 | #include "solist.h" |
54 | #include "observer.h" | |
60250e8b | 55 | #include "exceptions.h" |
765dc015 | 56 | #include "memattr.h" |
f7f9143b | 57 | #include "ada-lang.h" |
d1aa2f50 | 58 | #include "top.h" |
79a45b7d | 59 | #include "valprint.h" |
4efc6507 | 60 | #include "jit.h" |
a96d9b2e | 61 | #include "xml-syscall.h" |
65d79d4b | 62 | #include "parser-defs.h" |
55aa24fb SDJ |
63 | #include "gdb_regex.h" |
64 | #include "probe.h" | |
e9cafbcc | 65 | #include "cli/cli-utils.h" |
be34f849 | 66 | #include "continuations.h" |
1bfeeb0f JL |
67 | #include "stack.h" |
68 | #include "skip.h" | |
b775012e | 69 | #include "ax-gdb.h" |
e2e4d78b | 70 | #include "dummy-frame.h" |
c906108c | 71 | |
d3ce09f5 SS |
72 | #include "format.h" |
73 | ||
1042e4c0 SS |
74 | /* readline include files */ |
75 | #include "readline/readline.h" | |
76 | #include "readline/history.h" | |
77 | ||
78 | /* readline defines this. */ | |
79 | #undef savestring | |
80 | ||
034dad6f | 81 | #include "mi/mi-common.h" |
6dddc817 | 82 | #include "extension.h" |
104c1213 | 83 | |
e7e8980f YQ |
84 | /* Enums for exception-handling support. */ |
85 | enum exception_event_kind | |
86 | { | |
87 | EX_EVENT_THROW, | |
591f19e8 | 88 | EX_EVENT_RETHROW, |
e7e8980f YQ |
89 | EX_EVENT_CATCH |
90 | }; | |
91 | ||
4a64f543 | 92 | /* Prototypes for local functions. */ |
c906108c | 93 | |
a14ed312 | 94 | static void enable_delete_command (char *, int); |
c906108c | 95 | |
a14ed312 | 96 | static void enable_once_command (char *, int); |
c906108c | 97 | |
816338b5 SS |
98 | static void enable_count_command (char *, int); |
99 | ||
a14ed312 | 100 | static void disable_command (char *, int); |
c906108c | 101 | |
a14ed312 | 102 | static void enable_command (char *, int); |
c906108c | 103 | |
95a42b64 TT |
104 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
105 | void *), | |
106 | void *); | |
c906108c | 107 | |
a14ed312 | 108 | static void ignore_command (char *, int); |
c906108c | 109 | |
4efb68b1 | 110 | static int breakpoint_re_set_one (void *); |
c906108c | 111 | |
348d480f PA |
112 | static void breakpoint_re_set_default (struct breakpoint *); |
113 | ||
983af33b SDJ |
114 | static void create_sals_from_address_default (char **, |
115 | struct linespec_result *, | |
116 | enum bptype, char *, | |
117 | char **); | |
118 | ||
119 | static void create_breakpoints_sal_default (struct gdbarch *, | |
120 | struct linespec_result *, | |
e7e0cddf | 121 | char *, char *, enum bptype, |
983af33b SDJ |
122 | enum bpdisp, int, int, |
123 | int, | |
124 | const struct breakpoint_ops *, | |
44f238bb | 125 | int, int, int, unsigned); |
983af33b SDJ |
126 | |
127 | static void decode_linespec_default (struct breakpoint *, char **, | |
128 | struct symtabs_and_lines *); | |
129 | ||
a14ed312 | 130 | static void clear_command (char *, int); |
c906108c | 131 | |
a14ed312 | 132 | static void catch_command (char *, int); |
c906108c | 133 | |
a9634178 | 134 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 135 | |
98deb0da | 136 | static void break_command_1 (char *, int, int); |
c906108c | 137 | |
a14ed312 | 138 | static void mention (struct breakpoint *); |
c906108c | 139 | |
348d480f PA |
140 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
141 | enum bptype, | |
c0a91b2b | 142 | const struct breakpoint_ops *); |
3742cc8b YQ |
143 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
144 | const struct symtab_and_line *); | |
145 | ||
4a64f543 MS |
146 | /* This function is used in gdbtk sources and thus can not be made |
147 | static. */ | |
63c252f8 | 148 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 149 | struct symtab_and_line, |
c0a91b2b TT |
150 | enum bptype, |
151 | const struct breakpoint_ops *); | |
c906108c | 152 | |
06edf0c0 PA |
153 | static struct breakpoint * |
154 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
155 | enum bptype type, | |
c0a91b2b | 156 | const struct breakpoint_ops *ops); |
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 | ||
fe3f5fa8 | 231 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
232 | static void incref_bp_location (struct bp_location *loc); |
233 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 234 | |
39d61571 | 235 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 236 | |
b60e7edf | 237 | static void update_global_location_list (int); |
a5606eee | 238 | |
b60e7edf | 239 | static void update_global_location_list_nothrow (int); |
74960c60 | 240 | |
d77f58be | 241 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
242 | |
243 | static void insert_breakpoint_locations (void); | |
a5606eee | 244 | |
a96d9b2e SDJ |
245 | static int syscall_catchpoint_p (struct breakpoint *b); |
246 | ||
1042e4c0 SS |
247 | static void tracepoints_info (char *, int); |
248 | ||
249 | static void delete_trace_command (char *, int); | |
250 | ||
251 | static void enable_trace_command (char *, int); | |
252 | ||
253 | static void disable_trace_command (char *, int); | |
254 | ||
255 | static void trace_pass_command (char *, int); | |
256 | ||
558a9d82 YQ |
257 | static void set_tracepoint_count (int num); |
258 | ||
9c06b0b4 TJB |
259 | static int is_masked_watchpoint (const struct breakpoint *b); |
260 | ||
b775012e LM |
261 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
262 | ||
983af33b SDJ |
263 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
264 | otherwise. */ | |
265 | ||
266 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 267 | |
2060206e PA |
268 | /* The abstract base class all breakpoint_ops structures inherit |
269 | from. */ | |
ab04a2af | 270 | struct breakpoint_ops base_breakpoint_ops; |
2060206e PA |
271 | |
272 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
273 | that are implemented on top of software or hardware breakpoints | |
274 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
275 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
276 | ||
277 | /* Internal breakpoints class type. */ | |
06edf0c0 | 278 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
279 | |
280 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
281 | static struct breakpoint_ops momentary_breakpoint_ops; |
282 | ||
e2e4d78b JK |
283 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
284 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
285 | ||
2060206e PA |
286 | /* The breakpoint_ops structure to be used in regular user created |
287 | breakpoints. */ | |
288 | struct breakpoint_ops bkpt_breakpoint_ops; | |
289 | ||
55aa24fb SDJ |
290 | /* Breakpoints set on probes. */ |
291 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
292 | ||
e7e0cddf | 293 | /* Dynamic printf class type. */ |
c5867ab6 | 294 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 295 | |
9d497a19 PA |
296 | /* One (or perhaps two) breakpoints used for software single |
297 | stepping. */ | |
298 | ||
299 | static void *single_step_breakpoints[2]; | |
300 | static struct gdbarch *single_step_gdbarch[2]; | |
301 | ||
d3ce09f5 SS |
302 | /* The style in which to perform a dynamic printf. This is a user |
303 | option because different output options have different tradeoffs; | |
304 | if GDB does the printing, there is better error handling if there | |
305 | is a problem with any of the arguments, but using an inferior | |
306 | function lets you have special-purpose printers and sending of | |
307 | output to the same place as compiled-in print functions. */ | |
308 | ||
309 | static const char dprintf_style_gdb[] = "gdb"; | |
310 | static const char dprintf_style_call[] = "call"; | |
311 | static const char dprintf_style_agent[] = "agent"; | |
312 | static const char *const dprintf_style_enums[] = { | |
313 | dprintf_style_gdb, | |
314 | dprintf_style_call, | |
315 | dprintf_style_agent, | |
316 | NULL | |
317 | }; | |
318 | static const char *dprintf_style = dprintf_style_gdb; | |
319 | ||
320 | /* The function to use for dynamic printf if the preferred style is to | |
321 | call into the inferior. The value is simply a string that is | |
322 | copied into the command, so it can be anything that GDB can | |
323 | evaluate to a callable address, not necessarily a function name. */ | |
324 | ||
325 | static char *dprintf_function = ""; | |
326 | ||
327 | /* The channel to use for dynamic printf if the preferred style is to | |
328 | call into the inferior; if a nonempty string, it will be passed to | |
329 | the call as the first argument, with the format string as the | |
330 | second. As with the dprintf function, this can be anything that | |
331 | GDB knows how to evaluate, so in addition to common choices like | |
332 | "stderr", this could be an app-specific expression like | |
333 | "mystreams[curlogger]". */ | |
334 | ||
335 | static char *dprintf_channel = ""; | |
336 | ||
337 | /* True if dprintf commands should continue to operate even if GDB | |
338 | has disconnected. */ | |
339 | static int disconnected_dprintf = 1; | |
340 | ||
5cea2a26 PA |
341 | /* A reference-counted struct command_line. This lets multiple |
342 | breakpoints share a single command list. */ | |
343 | struct counted_command_line | |
344 | { | |
345 | /* The reference count. */ | |
346 | int refc; | |
347 | ||
348 | /* The command list. */ | |
349 | struct command_line *commands; | |
350 | }; | |
351 | ||
352 | struct command_line * | |
353 | breakpoint_commands (struct breakpoint *b) | |
354 | { | |
355 | return b->commands ? b->commands->commands : NULL; | |
356 | } | |
3daf8fe5 | 357 | |
f3b1572e PA |
358 | /* Flag indicating that a command has proceeded the inferior past the |
359 | current breakpoint. */ | |
360 | ||
361 | static int breakpoint_proceeded; | |
362 | ||
956a9fb9 | 363 | const char * |
2cec12e5 AR |
364 | bpdisp_text (enum bpdisp disp) |
365 | { | |
4a64f543 MS |
366 | /* NOTE: the following values are a part of MI protocol and |
367 | represent values of 'disp' field returned when inferior stops at | |
368 | a breakpoint. */ | |
bc043ef3 | 369 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 370 | |
2cec12e5 AR |
371 | return bpdisps[(int) disp]; |
372 | } | |
c906108c | 373 | |
4a64f543 | 374 | /* Prototypes for exported functions. */ |
c906108c | 375 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 376 | if such is available. */ |
c906108c SS |
377 | static int can_use_hw_watchpoints; |
378 | ||
920d2a44 AC |
379 | static void |
380 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
381 | struct cmd_list_element *c, | |
382 | const char *value) | |
383 | { | |
3e43a32a MS |
384 | fprintf_filtered (file, |
385 | _("Debugger's willingness to use " | |
386 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
387 | value); |
388 | } | |
389 | ||
fa8d40ab JJ |
390 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
391 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 392 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
393 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
394 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
395 | static void |
396 | show_pending_break_support (struct ui_file *file, int from_tty, | |
397 | struct cmd_list_element *c, | |
398 | const char *value) | |
399 | { | |
3e43a32a MS |
400 | fprintf_filtered (file, |
401 | _("Debugger's behavior regarding " | |
402 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
403 | value); |
404 | } | |
fa8d40ab | 405 | |
765dc015 | 406 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 407 | set with "break" but falling in read-only memory. |
765dc015 VP |
408 | If 0, gdb will warn about such breakpoints, but won't automatically |
409 | use hardware breakpoints. */ | |
410 | static int automatic_hardware_breakpoints; | |
411 | static void | |
412 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
413 | struct cmd_list_element *c, | |
414 | const char *value) | |
415 | { | |
3e43a32a MS |
416 | fprintf_filtered (file, |
417 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
418 | value); |
419 | } | |
420 | ||
33e5cbd6 PA |
421 | /* If on, gdb will keep breakpoints inserted even as inferior is |
422 | stopped, and immediately insert any new breakpoints. If off, gdb | |
423 | will insert breakpoints into inferior only when resuming it, and | |
424 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
425 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
426 | ||
72d0e2c5 YQ |
427 | static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO; |
428 | ||
33e5cbd6 | 429 | static void |
74960c60 | 430 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 431 | struct cmd_list_element *c, const char *value) |
74960c60 | 432 | { |
72d0e2c5 | 433 | if (always_inserted_mode == AUTO_BOOLEAN_AUTO) |
3e43a32a MS |
434 | fprintf_filtered (file, |
435 | _("Always inserted breakpoint " | |
436 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
437 | value, |
438 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
439 | else | |
3e43a32a MS |
440 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
441 | value); | |
74960c60 VP |
442 | } |
443 | ||
33e5cbd6 PA |
444 | int |
445 | breakpoints_always_inserted_mode (void) | |
446 | { | |
72d0e2c5 YQ |
447 | return (always_inserted_mode == AUTO_BOOLEAN_TRUE |
448 | || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop)); | |
33e5cbd6 | 449 | } |
765dc015 | 450 | |
b775012e LM |
451 | static const char condition_evaluation_both[] = "host or target"; |
452 | ||
453 | /* Modes for breakpoint condition evaluation. */ | |
454 | static const char condition_evaluation_auto[] = "auto"; | |
455 | static const char condition_evaluation_host[] = "host"; | |
456 | static const char condition_evaluation_target[] = "target"; | |
457 | static const char *const condition_evaluation_enums[] = { | |
458 | condition_evaluation_auto, | |
459 | condition_evaluation_host, | |
460 | condition_evaluation_target, | |
461 | NULL | |
462 | }; | |
463 | ||
464 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
465 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
466 | ||
467 | /* Global that we use to display information to the user (gets its value from | |
468 | condition_evaluation_mode_1. */ | |
469 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
470 | ||
471 | /* Translate a condition evaluation mode MODE into either "host" | |
472 | or "target". This is used mostly to translate from "auto" to the | |
473 | real setting that is being used. It returns the translated | |
474 | evaluation mode. */ | |
475 | ||
476 | static const char * | |
477 | translate_condition_evaluation_mode (const char *mode) | |
478 | { | |
479 | if (mode == condition_evaluation_auto) | |
480 | { | |
481 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
482 | return condition_evaluation_target; | |
483 | else | |
484 | return condition_evaluation_host; | |
485 | } | |
486 | else | |
487 | return mode; | |
488 | } | |
489 | ||
490 | /* Discovers what condition_evaluation_auto translates to. */ | |
491 | ||
492 | static const char * | |
493 | breakpoint_condition_evaluation_mode (void) | |
494 | { | |
495 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
496 | } | |
497 | ||
498 | /* Return true if GDB should evaluate breakpoint conditions or false | |
499 | otherwise. */ | |
500 | ||
501 | static int | |
502 | gdb_evaluates_breakpoint_condition_p (void) | |
503 | { | |
504 | const char *mode = breakpoint_condition_evaluation_mode (); | |
505 | ||
506 | return (mode == condition_evaluation_host); | |
507 | } | |
508 | ||
a14ed312 | 509 | void _initialize_breakpoint (void); |
c906108c | 510 | |
c906108c SS |
511 | /* Are we executing breakpoint commands? */ |
512 | static int executing_breakpoint_commands; | |
513 | ||
c02f5703 MS |
514 | /* Are overlay event breakpoints enabled? */ |
515 | static int overlay_events_enabled; | |
516 | ||
e09342b5 TJB |
517 | /* See description in breakpoint.h. */ |
518 | int target_exact_watchpoints = 0; | |
519 | ||
c906108c | 520 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 521 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 522 | current breakpoint. */ |
c906108c | 523 | |
5c44784c | 524 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 525 | |
5c44784c JM |
526 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
527 | for (B = breakpoint_chain; \ | |
528 | B ? (TMP=B->next, 1): 0; \ | |
529 | B = TMP) | |
c906108c | 530 | |
4a64f543 MS |
531 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
532 | not provided so update_global_location_list must not be called | |
533 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 534 | |
876fa593 JK |
535 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
536 | for (BP_TMP = bp_location; \ | |
537 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
538 | BP_TMP++) | |
7cc221ef | 539 | |
b775012e LM |
540 | /* Iterates through locations with address ADDRESS for the currently selected |
541 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
542 | to where the loop should start from. | |
543 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
544 | appropriate location to start with. */ | |
545 | ||
546 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
547 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
548 | BP_LOCP_TMP = BP_LOCP_START; \ | |
549 | BP_LOCP_START \ | |
550 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
551 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
552 | BP_LOCP_TMP++) | |
553 | ||
1042e4c0 SS |
554 | /* Iterator for tracepoints only. */ |
555 | ||
556 | #define ALL_TRACEPOINTS(B) \ | |
557 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 558 | if (is_tracepoint (B)) |
1042e4c0 | 559 | |
7cc221ef | 560 | /* Chains of all breakpoints defined. */ |
c906108c SS |
561 | |
562 | struct breakpoint *breakpoint_chain; | |
563 | ||
876fa593 JK |
564 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
565 | ||
566 | static struct bp_location **bp_location; | |
567 | ||
568 | /* Number of elements of BP_LOCATION. */ | |
569 | ||
570 | static unsigned bp_location_count; | |
571 | ||
4a64f543 MS |
572 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
573 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
574 | result from bp_location_has_shadow. You can use it for roughly | |
575 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
576 | an address you need to read. */ | |
876fa593 JK |
577 | |
578 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
579 | ||
4a64f543 MS |
580 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
581 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
582 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
583 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
584 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
585 | |
586 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 587 | |
4a64f543 MS |
588 | /* The locations that no longer correspond to any breakpoint, unlinked |
589 | from bp_location array, but for which a hit may still be reported | |
590 | by a target. */ | |
20874c92 VP |
591 | VEC(bp_location_p) *moribund_locations = NULL; |
592 | ||
c906108c SS |
593 | /* Number of last breakpoint made. */ |
594 | ||
95a42b64 TT |
595 | static int breakpoint_count; |
596 | ||
86b17b60 PA |
597 | /* The value of `breakpoint_count' before the last command that |
598 | created breakpoints. If the last (break-like) command created more | |
599 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
600 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
601 | static int prev_breakpoint_count; | |
c906108c | 602 | |
1042e4c0 SS |
603 | /* Number of last tracepoint made. */ |
604 | ||
95a42b64 | 605 | static int tracepoint_count; |
1042e4c0 | 606 | |
6149aea9 PA |
607 | static struct cmd_list_element *breakpoint_set_cmdlist; |
608 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 609 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 610 | |
468d015d JJ |
611 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
612 | static int | |
613 | breakpoint_enabled (struct breakpoint *b) | |
614 | { | |
0d381245 | 615 | return (b->enable_state == bp_enabled); |
468d015d JJ |
616 | } |
617 | ||
c906108c SS |
618 | /* Set breakpoint count to NUM. */ |
619 | ||
95a42b64 | 620 | static void |
fba45db2 | 621 | set_breakpoint_count (int num) |
c906108c | 622 | { |
86b17b60 | 623 | prev_breakpoint_count = breakpoint_count; |
c906108c | 624 | breakpoint_count = num; |
4fa62494 | 625 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
626 | } |
627 | ||
86b17b60 PA |
628 | /* Used by `start_rbreak_breakpoints' below, to record the current |
629 | breakpoint count before "rbreak" creates any breakpoint. */ | |
630 | static int rbreak_start_breakpoint_count; | |
631 | ||
95a42b64 TT |
632 | /* Called at the start an "rbreak" command to record the first |
633 | breakpoint made. */ | |
86b17b60 | 634 | |
95a42b64 TT |
635 | void |
636 | start_rbreak_breakpoints (void) | |
637 | { | |
86b17b60 | 638 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
639 | } |
640 | ||
641 | /* Called at the end of an "rbreak" command to record the last | |
642 | breakpoint made. */ | |
86b17b60 | 643 | |
95a42b64 TT |
644 | void |
645 | end_rbreak_breakpoints (void) | |
646 | { | |
86b17b60 | 647 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
648 | } |
649 | ||
4a64f543 | 650 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
651 | |
652 | void | |
fba45db2 | 653 | clear_breakpoint_hit_counts (void) |
c906108c SS |
654 | { |
655 | struct breakpoint *b; | |
656 | ||
657 | ALL_BREAKPOINTS (b) | |
658 | b->hit_count = 0; | |
659 | } | |
660 | ||
9add0f1b TT |
661 | /* Allocate a new counted_command_line with reference count of 1. |
662 | The new structure owns COMMANDS. */ | |
663 | ||
664 | static struct counted_command_line * | |
665 | alloc_counted_command_line (struct command_line *commands) | |
666 | { | |
667 | struct counted_command_line *result | |
668 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 669 | |
9add0f1b TT |
670 | result->refc = 1; |
671 | result->commands = commands; | |
672 | return result; | |
673 | } | |
674 | ||
675 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
676 | ||
677 | static void | |
678 | incref_counted_command_line (struct counted_command_line *cmd) | |
679 | { | |
680 | if (cmd) | |
681 | ++cmd->refc; | |
682 | } | |
683 | ||
684 | /* Decrement reference count. If the reference count reaches 0, | |
685 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
686 | nothing if *CMDP is NULL. */ | |
687 | ||
688 | static void | |
689 | decref_counted_command_line (struct counted_command_line **cmdp) | |
690 | { | |
691 | if (*cmdp) | |
692 | { | |
693 | if (--(*cmdp)->refc == 0) | |
694 | { | |
695 | free_command_lines (&(*cmdp)->commands); | |
696 | xfree (*cmdp); | |
697 | } | |
698 | *cmdp = NULL; | |
699 | } | |
700 | } | |
701 | ||
702 | /* A cleanup function that calls decref_counted_command_line. */ | |
703 | ||
704 | static void | |
705 | do_cleanup_counted_command_line (void *arg) | |
706 | { | |
707 | decref_counted_command_line (arg); | |
708 | } | |
709 | ||
710 | /* Create a cleanup that calls decref_counted_command_line on the | |
711 | argument. */ | |
712 | ||
713 | static struct cleanup * | |
714 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
715 | { | |
716 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
717 | } | |
718 | ||
c906108c | 719 | \f |
48cb2d85 VP |
720 | /* Return the breakpoint with the specified number, or NULL |
721 | if the number does not refer to an existing breakpoint. */ | |
722 | ||
723 | struct breakpoint * | |
724 | get_breakpoint (int num) | |
725 | { | |
726 | struct breakpoint *b; | |
727 | ||
728 | ALL_BREAKPOINTS (b) | |
729 | if (b->number == num) | |
730 | return b; | |
731 | ||
732 | return NULL; | |
733 | } | |
5c44784c | 734 | |
c906108c | 735 | \f |
adc36818 | 736 | |
b775012e LM |
737 | /* Mark locations as "conditions have changed" in case the target supports |
738 | evaluating conditions on its side. */ | |
739 | ||
740 | static void | |
741 | mark_breakpoint_modified (struct breakpoint *b) | |
742 | { | |
743 | struct bp_location *loc; | |
744 | ||
745 | /* This is only meaningful if the target is | |
746 | evaluating conditions and if the user has | |
747 | opted for condition evaluation on the target's | |
748 | side. */ | |
749 | if (gdb_evaluates_breakpoint_condition_p () | |
750 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
751 | return; | |
752 | ||
753 | if (!is_breakpoint (b)) | |
754 | return; | |
755 | ||
756 | for (loc = b->loc; loc; loc = loc->next) | |
757 | loc->condition_changed = condition_modified; | |
758 | } | |
759 | ||
760 | /* Mark location as "conditions have changed" in case the target supports | |
761 | evaluating conditions on its side. */ | |
762 | ||
763 | static void | |
764 | mark_breakpoint_location_modified (struct bp_location *loc) | |
765 | { | |
766 | /* This is only meaningful if the target is | |
767 | evaluating conditions and if the user has | |
768 | opted for condition evaluation on the target's | |
769 | side. */ | |
770 | if (gdb_evaluates_breakpoint_condition_p () | |
771 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
772 | ||
773 | return; | |
774 | ||
775 | if (!is_breakpoint (loc->owner)) | |
776 | return; | |
777 | ||
778 | loc->condition_changed = condition_modified; | |
779 | } | |
780 | ||
781 | /* Sets the condition-evaluation mode using the static global | |
782 | condition_evaluation_mode. */ | |
783 | ||
784 | static void | |
785 | set_condition_evaluation_mode (char *args, int from_tty, | |
786 | struct cmd_list_element *c) | |
787 | { | |
b775012e LM |
788 | const char *old_mode, *new_mode; |
789 | ||
790 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
791 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
792 | { | |
793 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
794 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
795 | "Using host evaluation mode instead.")); | |
796 | return; | |
797 | } | |
798 | ||
799 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
800 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
801 | ||
abf1152a JK |
802 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
803 | settings was "auto". */ | |
804 | condition_evaluation_mode = condition_evaluation_mode_1; | |
805 | ||
b775012e LM |
806 | /* Only update the mode if the user picked a different one. */ |
807 | if (new_mode != old_mode) | |
808 | { | |
809 | struct bp_location *loc, **loc_tmp; | |
810 | /* If the user switched to a different evaluation mode, we | |
811 | need to synch the changes with the target as follows: | |
812 | ||
813 | "host" -> "target": Send all (valid) conditions to the target. | |
814 | "target" -> "host": Remove all the conditions from the target. | |
815 | */ | |
816 | ||
b775012e LM |
817 | if (new_mode == condition_evaluation_target) |
818 | { | |
819 | /* Mark everything modified and synch conditions with the | |
820 | target. */ | |
821 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
822 | mark_breakpoint_location_modified (loc); | |
823 | } | |
824 | else | |
825 | { | |
826 | /* Manually mark non-duplicate locations to synch conditions | |
827 | with the target. We do this to remove all the conditions the | |
828 | target knows about. */ | |
829 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
830 | if (is_breakpoint (loc->owner) && loc->inserted) | |
831 | loc->needs_update = 1; | |
832 | } | |
833 | ||
834 | /* Do the update. */ | |
835 | update_global_location_list (1); | |
836 | } | |
837 | ||
838 | return; | |
839 | } | |
840 | ||
841 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
842 | what "auto" is translating to. */ | |
843 | ||
844 | static void | |
845 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
846 | struct cmd_list_element *c, const char *value) | |
847 | { | |
848 | if (condition_evaluation_mode == condition_evaluation_auto) | |
849 | fprintf_filtered (file, | |
850 | _("Breakpoint condition evaluation " | |
851 | "mode is %s (currently %s).\n"), | |
852 | value, | |
853 | breakpoint_condition_evaluation_mode ()); | |
854 | else | |
855 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
856 | value); | |
857 | } | |
858 | ||
859 | /* A comparison function for bp_location AP and BP that is used by | |
860 | bsearch. This comparison function only cares about addresses, unlike | |
861 | the more general bp_location_compare function. */ | |
862 | ||
863 | static int | |
864 | bp_location_compare_addrs (const void *ap, const void *bp) | |
865 | { | |
866 | struct bp_location *a = *(void **) ap; | |
867 | struct bp_location *b = *(void **) bp; | |
868 | ||
869 | if (a->address == b->address) | |
870 | return 0; | |
871 | else | |
872 | return ((a->address > b->address) - (a->address < b->address)); | |
873 | } | |
874 | ||
875 | /* Helper function to skip all bp_locations with addresses | |
876 | less than ADDRESS. It returns the first bp_location that | |
877 | is greater than or equal to ADDRESS. If none is found, just | |
878 | return NULL. */ | |
879 | ||
880 | static struct bp_location ** | |
881 | get_first_locp_gte_addr (CORE_ADDR address) | |
882 | { | |
883 | struct bp_location dummy_loc; | |
884 | struct bp_location *dummy_locp = &dummy_loc; | |
885 | struct bp_location **locp_found = NULL; | |
886 | ||
887 | /* Initialize the dummy location's address field. */ | |
888 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
889 | dummy_loc.address = address; | |
890 | ||
891 | /* Find a close match to the first location at ADDRESS. */ | |
892 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
893 | sizeof (struct bp_location **), | |
894 | bp_location_compare_addrs); | |
895 | ||
896 | /* Nothing was found, nothing left to do. */ | |
897 | if (locp_found == NULL) | |
898 | return NULL; | |
899 | ||
900 | /* We may have found a location that is at ADDRESS but is not the first in the | |
901 | location's list. Go backwards (if possible) and locate the first one. */ | |
902 | while ((locp_found - 1) >= bp_location | |
903 | && (*(locp_found - 1))->address == address) | |
904 | locp_found--; | |
905 | ||
906 | return locp_found; | |
907 | } | |
908 | ||
adc36818 PM |
909 | void |
910 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
911 | int from_tty) | |
912 | { | |
3a5c3e22 PA |
913 | xfree (b->cond_string); |
914 | b->cond_string = NULL; | |
adc36818 | 915 | |
3a5c3e22 | 916 | if (is_watchpoint (b)) |
adc36818 | 917 | { |
3a5c3e22 PA |
918 | struct watchpoint *w = (struct watchpoint *) b; |
919 | ||
920 | xfree (w->cond_exp); | |
921 | w->cond_exp = NULL; | |
922 | } | |
923 | else | |
924 | { | |
925 | struct bp_location *loc; | |
926 | ||
927 | for (loc = b->loc; loc; loc = loc->next) | |
928 | { | |
929 | xfree (loc->cond); | |
930 | loc->cond = NULL; | |
b775012e LM |
931 | |
932 | /* No need to free the condition agent expression | |
933 | bytecode (if we have one). We will handle this | |
934 | when we go through update_global_location_list. */ | |
3a5c3e22 | 935 | } |
adc36818 | 936 | } |
adc36818 PM |
937 | |
938 | if (*exp == 0) | |
939 | { | |
940 | if (from_tty) | |
941 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
942 | } | |
943 | else | |
944 | { | |
bbc13ae3 | 945 | const char *arg = exp; |
cc59ec59 | 946 | |
adc36818 PM |
947 | /* I don't know if it matters whether this is the string the user |
948 | typed in or the decompiled expression. */ | |
949 | b->cond_string = xstrdup (arg); | |
950 | b->condition_not_parsed = 0; | |
951 | ||
952 | if (is_watchpoint (b)) | |
953 | { | |
3a5c3e22 PA |
954 | struct watchpoint *w = (struct watchpoint *) b; |
955 | ||
adc36818 PM |
956 | innermost_block = NULL; |
957 | arg = exp; | |
1bb9788d | 958 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
959 | if (*arg) |
960 | error (_("Junk at end of expression")); | |
3a5c3e22 | 961 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
962 | } |
963 | else | |
964 | { | |
3a5c3e22 PA |
965 | struct bp_location *loc; |
966 | ||
adc36818 PM |
967 | for (loc = b->loc; loc; loc = loc->next) |
968 | { | |
969 | arg = exp; | |
970 | loc->cond = | |
1bb9788d TT |
971 | parse_exp_1 (&arg, loc->address, |
972 | block_for_pc (loc->address), 0); | |
adc36818 PM |
973 | if (*arg) |
974 | error (_("Junk at end of expression")); | |
975 | } | |
976 | } | |
977 | } | |
b775012e LM |
978 | mark_breakpoint_modified (b); |
979 | ||
8d3788bd | 980 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
981 | } |
982 | ||
d55637df TT |
983 | /* Completion for the "condition" command. */ |
984 | ||
985 | static VEC (char_ptr) * | |
6f937416 PA |
986 | condition_completer (struct cmd_list_element *cmd, |
987 | const char *text, const char *word) | |
d55637df | 988 | { |
6f937416 | 989 | const char *space; |
d55637df | 990 | |
6f937416 PA |
991 | text = skip_spaces_const (text); |
992 | space = skip_to_space_const (text); | |
d55637df TT |
993 | if (*space == '\0') |
994 | { | |
995 | int len; | |
996 | struct breakpoint *b; | |
997 | VEC (char_ptr) *result = NULL; | |
998 | ||
999 | if (text[0] == '$') | |
1000 | { | |
1001 | /* We don't support completion of history indices. */ | |
1002 | if (isdigit (text[1])) | |
1003 | return NULL; | |
1004 | return complete_internalvar (&text[1]); | |
1005 | } | |
1006 | ||
1007 | /* We're completing the breakpoint number. */ | |
1008 | len = strlen (text); | |
1009 | ||
1010 | ALL_BREAKPOINTS (b) | |
58ce7251 SDJ |
1011 | { |
1012 | char number[50]; | |
1013 | ||
1014 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1015 | ||
1016 | if (strncmp (number, text, len) == 0) | |
1017 | VEC_safe_push (char_ptr, result, xstrdup (number)); | |
1018 | } | |
d55637df TT |
1019 | |
1020 | return result; | |
1021 | } | |
1022 | ||
1023 | /* We're completing the expression part. */ | |
6f937416 | 1024 | text = skip_spaces_const (space); |
d55637df TT |
1025 | return expression_completer (cmd, text, word); |
1026 | } | |
1027 | ||
c906108c SS |
1028 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1029 | ||
1030 | static void | |
fba45db2 | 1031 | condition_command (char *arg, int from_tty) |
c906108c | 1032 | { |
52f0bd74 | 1033 | struct breakpoint *b; |
c906108c | 1034 | char *p; |
52f0bd74 | 1035 | int bnum; |
c906108c SS |
1036 | |
1037 | if (arg == 0) | |
e2e0b3e5 | 1038 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1039 | |
1040 | p = arg; | |
1041 | bnum = get_number (&p); | |
5c44784c | 1042 | if (bnum == 0) |
8a3fe4f8 | 1043 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1044 | |
1045 | ALL_BREAKPOINTS (b) | |
1046 | if (b->number == bnum) | |
2f069f6f | 1047 | { |
6dddc817 DE |
1048 | /* Check if this breakpoint has a "stop" method implemented in an |
1049 | extension language. This method and conditions entered into GDB | |
1050 | from the CLI are mutually exclusive. */ | |
1051 | const struct extension_language_defn *extlang | |
1052 | = get_breakpoint_cond_ext_lang (b, EXT_LANG_NONE); | |
1053 | ||
1054 | if (extlang != NULL) | |
1055 | { | |
1056 | error (_("Only one stop condition allowed. There is currently" | |
1057 | " a %s stop condition defined for this breakpoint."), | |
1058 | ext_lang_capitalized_name (extlang)); | |
1059 | } | |
2566ad2d | 1060 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1061 | |
1062 | if (is_breakpoint (b)) | |
1063 | update_global_location_list (1); | |
1064 | ||
2f069f6f JB |
1065 | return; |
1066 | } | |
c906108c | 1067 | |
8a3fe4f8 | 1068 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1069 | } |
1070 | ||
a7bdde9e VP |
1071 | /* Check that COMMAND do not contain commands that are suitable |
1072 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1073 | Throw if any such commands is found. */ |
1074 | ||
a7bdde9e VP |
1075 | static void |
1076 | check_no_tracepoint_commands (struct command_line *commands) | |
1077 | { | |
1078 | struct command_line *c; | |
cc59ec59 | 1079 | |
a7bdde9e VP |
1080 | for (c = commands; c; c = c->next) |
1081 | { | |
1082 | int i; | |
1083 | ||
1084 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1085 | error (_("The 'while-stepping' command can " |
1086 | "only be used for tracepoints")); | |
a7bdde9e VP |
1087 | |
1088 | for (i = 0; i < c->body_count; ++i) | |
1089 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1090 | ||
1091 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1092 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1093 | command directly. */ |
1094 | if (strstr (c->line, "collect ") == c->line) | |
1095 | error (_("The 'collect' command can only be used for tracepoints")); | |
1096 | ||
51661e93 VP |
1097 | if (strstr (c->line, "teval ") == c->line) |
1098 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1099 | } |
1100 | } | |
1101 | ||
d77f58be SS |
1102 | /* Encapsulate tests for different types of tracepoints. */ |
1103 | ||
d9b3f62e PA |
1104 | static int |
1105 | is_tracepoint_type (enum bptype type) | |
1106 | { | |
1107 | return (type == bp_tracepoint | |
1108 | || type == bp_fast_tracepoint | |
1109 | || type == bp_static_tracepoint); | |
1110 | } | |
1111 | ||
a7bdde9e | 1112 | int |
d77f58be | 1113 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1114 | { |
d9b3f62e | 1115 | return is_tracepoint_type (b->type); |
a7bdde9e | 1116 | } |
d9b3f62e | 1117 | |
e5dd4106 | 1118 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1119 | breakpoint. This function will throw an exception if a problem is |
1120 | found. */ | |
48cb2d85 | 1121 | |
95a42b64 TT |
1122 | static void |
1123 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1124 | struct command_line *commands) | |
48cb2d85 | 1125 | { |
d77f58be | 1126 | if (is_tracepoint (b)) |
a7bdde9e | 1127 | { |
c9a6ce02 | 1128 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1129 | struct command_line *c; |
1130 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1131 | |
1132 | /* Reset the while-stepping step count. The previous commands | |
1133 | might have included a while-stepping action, while the new | |
1134 | ones might not. */ | |
1135 | t->step_count = 0; | |
1136 | ||
1137 | /* We need to verify that each top-level element of commands is | |
1138 | valid for tracepoints, that there's at most one | |
1139 | while-stepping element, and that the while-stepping's body | |
1140 | has valid tracing commands excluding nested while-stepping. | |
1141 | We also need to validate the tracepoint action line in the | |
1142 | context of the tracepoint --- validate_actionline actually | |
1143 | has side effects, like setting the tracepoint's | |
1144 | while-stepping STEP_COUNT, in addition to checking if the | |
1145 | collect/teval actions parse and make sense in the | |
1146 | tracepoint's context. */ | |
a7bdde9e VP |
1147 | for (c = commands; c; c = c->next) |
1148 | { | |
a7bdde9e VP |
1149 | if (c->control_type == while_stepping_control) |
1150 | { | |
1151 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1152 | error (_("The 'while-stepping' command " |
1153 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1154 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1155 | error (_("The 'while-stepping' command " |
1156 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1157 | |
1158 | if (while_stepping) | |
3e43a32a MS |
1159 | error (_("The 'while-stepping' command " |
1160 | "can be used only once")); | |
a7bdde9e VP |
1161 | else |
1162 | while_stepping = c; | |
1163 | } | |
c9a6ce02 PA |
1164 | |
1165 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1166 | } |
1167 | if (while_stepping) | |
1168 | { | |
1169 | struct command_line *c2; | |
1170 | ||
1171 | gdb_assert (while_stepping->body_count == 1); | |
1172 | c2 = while_stepping->body_list[0]; | |
1173 | for (; c2; c2 = c2->next) | |
1174 | { | |
a7bdde9e VP |
1175 | if (c2->control_type == while_stepping_control) |
1176 | error (_("The 'while-stepping' command cannot be nested")); | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | else | |
1181 | { | |
1182 | check_no_tracepoint_commands (commands); | |
1183 | } | |
95a42b64 TT |
1184 | } |
1185 | ||
0fb4aa4b PA |
1186 | /* Return a vector of all the static tracepoints set at ADDR. The |
1187 | caller is responsible for releasing the vector. */ | |
1188 | ||
1189 | VEC(breakpoint_p) * | |
1190 | static_tracepoints_here (CORE_ADDR addr) | |
1191 | { | |
1192 | struct breakpoint *b; | |
1193 | VEC(breakpoint_p) *found = 0; | |
1194 | struct bp_location *loc; | |
1195 | ||
1196 | ALL_BREAKPOINTS (b) | |
1197 | if (b->type == bp_static_tracepoint) | |
1198 | { | |
1199 | for (loc = b->loc; loc; loc = loc->next) | |
1200 | if (loc->address == addr) | |
1201 | VEC_safe_push(breakpoint_p, found, b); | |
1202 | } | |
1203 | ||
1204 | return found; | |
1205 | } | |
1206 | ||
95a42b64 | 1207 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1208 | validate that only allowed commands are included. */ |
95a42b64 TT |
1209 | |
1210 | void | |
4a64f543 MS |
1211 | breakpoint_set_commands (struct breakpoint *b, |
1212 | struct command_line *commands) | |
95a42b64 TT |
1213 | { |
1214 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1215 | |
9add0f1b TT |
1216 | decref_counted_command_line (&b->commands); |
1217 | b->commands = alloc_counted_command_line (commands); | |
8d3788bd | 1218 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1219 | } |
1220 | ||
45a43567 TT |
1221 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1222 | is not the same as the "silent" that may appear in the breakpoint's | |
1223 | commands. */ | |
1224 | ||
1225 | void | |
1226 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1227 | { | |
1228 | int old_silent = b->silent; | |
1229 | ||
1230 | b->silent = silent; | |
1231 | if (old_silent != silent) | |
8d3788bd | 1232 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1233 | } |
1234 | ||
1235 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1236 | breakpoint work for any thread. */ | |
1237 | ||
1238 | void | |
1239 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1240 | { | |
1241 | int old_thread = b->thread; | |
1242 | ||
1243 | b->thread = thread; | |
1244 | if (old_thread != thread) | |
8d3788bd | 1245 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1246 | } |
1247 | ||
1248 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1249 | breakpoint work for any task. */ | |
1250 | ||
1251 | void | |
1252 | breakpoint_set_task (struct breakpoint *b, int task) | |
1253 | { | |
1254 | int old_task = b->task; | |
1255 | ||
1256 | b->task = task; | |
1257 | if (old_task != task) | |
8d3788bd | 1258 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1259 | } |
1260 | ||
95a42b64 TT |
1261 | void |
1262 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1263 | { |
1264 | struct breakpoint *b = closure; | |
cc59ec59 | 1265 | |
6f937416 | 1266 | validate_actionline (line, b); |
a7bdde9e VP |
1267 | } |
1268 | ||
95a42b64 TT |
1269 | /* A structure used to pass information through |
1270 | map_breakpoint_numbers. */ | |
1271 | ||
1272 | struct commands_info | |
1273 | { | |
1274 | /* True if the command was typed at a tty. */ | |
1275 | int from_tty; | |
86b17b60 PA |
1276 | |
1277 | /* The breakpoint range spec. */ | |
1278 | char *arg; | |
1279 | ||
95a42b64 TT |
1280 | /* Non-NULL if the body of the commands are being read from this |
1281 | already-parsed command. */ | |
1282 | struct command_line *control; | |
86b17b60 | 1283 | |
95a42b64 TT |
1284 | /* The command lines read from the user, or NULL if they have not |
1285 | yet been read. */ | |
1286 | struct counted_command_line *cmd; | |
1287 | }; | |
1288 | ||
1289 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1290 | commands_command. */ | |
1291 | ||
c906108c | 1292 | static void |
95a42b64 | 1293 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1294 | { |
95a42b64 | 1295 | struct commands_info *info = data; |
c906108c | 1296 | |
95a42b64 TT |
1297 | if (info->cmd == NULL) |
1298 | { | |
1299 | struct command_line *l; | |
5c44784c | 1300 | |
95a42b64 TT |
1301 | if (info->control != NULL) |
1302 | l = copy_command_lines (info->control->body_list[0]); | |
1303 | else | |
86b17b60 PA |
1304 | { |
1305 | struct cleanup *old_chain; | |
1306 | char *str; | |
c5aa993b | 1307 | |
3e43a32a MS |
1308 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1309 | "%s, one per line."), | |
86b17b60 PA |
1310 | info->arg); |
1311 | ||
1312 | old_chain = make_cleanup (xfree, str); | |
1313 | ||
1314 | l = read_command_lines (str, | |
1315 | info->from_tty, 1, | |
d77f58be | 1316 | (is_tracepoint (b) |
86b17b60 PA |
1317 | ? check_tracepoint_command : 0), |
1318 | b); | |
1319 | ||
1320 | do_cleanups (old_chain); | |
1321 | } | |
a7bdde9e | 1322 | |
95a42b64 TT |
1323 | info->cmd = alloc_counted_command_line (l); |
1324 | } | |
1325 | ||
1326 | /* If a breakpoint was on the list more than once, we don't need to | |
1327 | do anything. */ | |
1328 | if (b->commands != info->cmd) | |
1329 | { | |
1330 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1331 | incref_counted_command_line (info->cmd); | |
1332 | decref_counted_command_line (&b->commands); | |
1333 | b->commands = info->cmd; | |
8d3788bd | 1334 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1335 | } |
95a42b64 TT |
1336 | } |
1337 | ||
1338 | static void | |
4a64f543 MS |
1339 | commands_command_1 (char *arg, int from_tty, |
1340 | struct command_line *control) | |
95a42b64 TT |
1341 | { |
1342 | struct cleanup *cleanups; | |
1343 | struct commands_info info; | |
1344 | ||
1345 | info.from_tty = from_tty; | |
1346 | info.control = control; | |
1347 | info.cmd = NULL; | |
1348 | /* If we read command lines from the user, then `info' will hold an | |
1349 | extra reference to the commands that we must clean up. */ | |
1350 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1351 | ||
1352 | if (arg == NULL || !*arg) | |
1353 | { | |
86b17b60 | 1354 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1355 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1356 | breakpoint_count); | |
95a42b64 TT |
1357 | else if (breakpoint_count > 0) |
1358 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1359 | else |
1360 | { | |
1361 | /* So that we don't try to free the incoming non-NULL | |
1362 | argument in the cleanup below. Mapping breakpoint | |
1363 | numbers will fail in this case. */ | |
1364 | arg = NULL; | |
1365 | } | |
95a42b64 | 1366 | } |
9766ced4 SS |
1367 | else |
1368 | /* The command loop has some static state, so we need to preserve | |
1369 | our argument. */ | |
1370 | arg = xstrdup (arg); | |
86b17b60 PA |
1371 | |
1372 | if (arg != NULL) | |
1373 | make_cleanup (xfree, arg); | |
1374 | ||
1375 | info.arg = arg; | |
95a42b64 TT |
1376 | |
1377 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1378 | ||
1379 | if (info.cmd == NULL) | |
1380 | error (_("No breakpoints specified.")); | |
1381 | ||
1382 | do_cleanups (cleanups); | |
1383 | } | |
1384 | ||
1385 | static void | |
1386 | commands_command (char *arg, int from_tty) | |
1387 | { | |
1388 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1389 | } |
40c03ae8 EZ |
1390 | |
1391 | /* Like commands_command, but instead of reading the commands from | |
1392 | input stream, takes them from an already parsed command structure. | |
1393 | ||
1394 | This is used by cli-script.c to DTRT with breakpoint commands | |
1395 | that are part of if and while bodies. */ | |
1396 | enum command_control_type | |
1397 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1398 | { | |
95a42b64 TT |
1399 | commands_command_1 (arg, 0, cmd); |
1400 | return simple_control; | |
40c03ae8 | 1401 | } |
876fa593 JK |
1402 | |
1403 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1404 | ||
1405 | static int | |
1406 | bp_location_has_shadow (struct bp_location *bl) | |
1407 | { | |
1408 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1409 | return 0; | |
1410 | if (!bl->inserted) | |
1411 | return 0; | |
1412 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1413 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1414 | return 0; |
1415 | return 1; | |
1416 | } | |
1417 | ||
9d497a19 PA |
1418 | /* Update BUF, which is LEN bytes read from the target address |
1419 | MEMADDR, by replacing a memory breakpoint with its shadowed | |
1420 | contents. | |
1421 | ||
1422 | If READBUF is not NULL, this buffer must not overlap with the of | |
1423 | the breakpoint location's shadow_contents buffer. Otherwise, a | |
1424 | failed assertion internal error will be raised. */ | |
1425 | ||
1426 | static void | |
1427 | one_breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, | |
1428 | const gdb_byte *writebuf_org, | |
1429 | ULONGEST memaddr, LONGEST len, | |
1430 | struct bp_target_info *target_info, | |
1431 | struct gdbarch *gdbarch) | |
1432 | { | |
1433 | /* Now do full processing of the found relevant range of elements. */ | |
1434 | CORE_ADDR bp_addr = 0; | |
1435 | int bp_size = 0; | |
1436 | int bptoffset = 0; | |
1437 | ||
1438 | if (!breakpoint_address_match (target_info->placed_address_space, 0, | |
1439 | current_program_space->aspace, 0)) | |
1440 | { | |
1441 | /* The breakpoint is inserted in a different address space. */ | |
1442 | return; | |
1443 | } | |
1444 | ||
1445 | /* Addresses and length of the part of the breakpoint that | |
1446 | we need to copy. */ | |
1447 | bp_addr = target_info->placed_address; | |
1448 | bp_size = target_info->shadow_len; | |
1449 | ||
1450 | if (bp_addr + bp_size <= memaddr) | |
1451 | { | |
1452 | /* The breakpoint is entirely before the chunk of memory we are | |
1453 | reading. */ | |
1454 | return; | |
1455 | } | |
1456 | ||
1457 | if (bp_addr >= memaddr + len) | |
1458 | { | |
1459 | /* The breakpoint is entirely after the chunk of memory we are | |
1460 | reading. */ | |
1461 | return; | |
1462 | } | |
1463 | ||
1464 | /* Offset within shadow_contents. */ | |
1465 | if (bp_addr < memaddr) | |
1466 | { | |
1467 | /* Only copy the second part of the breakpoint. */ | |
1468 | bp_size -= memaddr - bp_addr; | |
1469 | bptoffset = memaddr - bp_addr; | |
1470 | bp_addr = memaddr; | |
1471 | } | |
1472 | ||
1473 | if (bp_addr + bp_size > memaddr + len) | |
1474 | { | |
1475 | /* Only copy the first part of the breakpoint. */ | |
1476 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1477 | } | |
1478 | ||
1479 | if (readbuf != NULL) | |
1480 | { | |
1481 | /* Verify that the readbuf buffer does not overlap with the | |
1482 | shadow_contents buffer. */ | |
1483 | gdb_assert (target_info->shadow_contents >= readbuf + len | |
1484 | || readbuf >= (target_info->shadow_contents | |
1485 | + target_info->shadow_len)); | |
1486 | ||
1487 | /* Update the read buffer with this inserted breakpoint's | |
1488 | shadow. */ | |
1489 | memcpy (readbuf + bp_addr - memaddr, | |
1490 | target_info->shadow_contents + bptoffset, bp_size); | |
1491 | } | |
1492 | else | |
1493 | { | |
1494 | const unsigned char *bp; | |
1495 | CORE_ADDR placed_address = target_info->placed_address; | |
1496 | int placed_size = target_info->placed_size; | |
1497 | ||
1498 | /* Update the shadow with what we want to write to memory. */ | |
1499 | memcpy (target_info->shadow_contents + bptoffset, | |
1500 | writebuf_org + bp_addr - memaddr, bp_size); | |
1501 | ||
1502 | /* Determine appropriate breakpoint contents and size for this | |
1503 | address. */ | |
1504 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1505 | ||
1506 | /* Update the final write buffer with this inserted | |
1507 | breakpoint's INSN. */ | |
1508 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1509 | } | |
1510 | } | |
1511 | ||
8defab1a | 1512 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1513 | by replacing any memory breakpoints with their shadowed contents. |
1514 | ||
35c63cd8 JB |
1515 | If READBUF is not NULL, this buffer must not overlap with any of |
1516 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1517 | a failed assertion internal error will be raised. | |
1518 | ||
876fa593 | 1519 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1520 | bl->address - bp_location_placed_address_before_address_max |
1521 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1522 | The range we were requested to resolve shadows for is: |
1523 | memaddr ... memaddr + len | |
1524 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1525 | memaddr + len <= (bl->address |
1526 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1527 | and: |
35df4500 | 1528 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1529 | |
8defab1a | 1530 | void |
f0ba3972 PA |
1531 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1532 | const gdb_byte *writebuf_org, | |
1533 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1534 | { |
4a64f543 MS |
1535 | /* Left boundary, right boundary and median element of our binary |
1536 | search. */ | |
876fa593 | 1537 | unsigned bc_l, bc_r, bc; |
9d497a19 | 1538 | size_t i; |
876fa593 | 1539 | |
4a64f543 MS |
1540 | /* Find BC_L which is a leftmost element which may affect BUF |
1541 | content. It is safe to report lower value but a failure to | |
1542 | report higher one. */ | |
876fa593 JK |
1543 | |
1544 | bc_l = 0; | |
1545 | bc_r = bp_location_count; | |
1546 | while (bc_l + 1 < bc_r) | |
1547 | { | |
35df4500 | 1548 | struct bp_location *bl; |
876fa593 JK |
1549 | |
1550 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1551 | bl = bp_location[bc]; |
876fa593 | 1552 | |
4a64f543 MS |
1553 | /* Check first BL->ADDRESS will not overflow due to the added |
1554 | constant. Then advance the left boundary only if we are sure | |
1555 | the BC element can in no way affect the BUF content (MEMADDR | |
1556 | to MEMADDR + LEN range). | |
876fa593 | 1557 | |
4a64f543 MS |
1558 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1559 | offset so that we cannot miss a breakpoint with its shadow | |
1560 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1561 | |
35df4500 TJB |
1562 | if ((bl->address + bp_location_shadow_len_after_address_max |
1563 | >= bl->address) | |
1564 | && (bl->address + bp_location_shadow_len_after_address_max | |
1565 | <= memaddr)) | |
876fa593 JK |
1566 | bc_l = bc; |
1567 | else | |
1568 | bc_r = bc; | |
1569 | } | |
1570 | ||
128070bb PA |
1571 | /* Due to the binary search above, we need to make sure we pick the |
1572 | first location that's at BC_L's address. E.g., if there are | |
1573 | multiple locations at the same address, BC_L may end up pointing | |
1574 | at a duplicate location, and miss the "master"/"inserted" | |
1575 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1576 | B: | |
1577 | ||
1578 | L1@A, L2@A, L3@B, ... | |
1579 | ||
1580 | BC_L could end up pointing at location L2, while the "master" | |
1581 | location could be L1. Since the `loc->inserted' flag is only set | |
1582 | on "master" locations, we'd forget to restore the shadow of L1 | |
1583 | and L2. */ | |
1584 | while (bc_l > 0 | |
1585 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1586 | bc_l--; | |
1587 | ||
876fa593 JK |
1588 | /* Now do full processing of the found relevant range of elements. */ |
1589 | ||
1590 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1591 | { |
35df4500 | 1592 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1593 | CORE_ADDR bp_addr = 0; |
1594 | int bp_size = 0; | |
1595 | int bptoffset = 0; | |
1596 | ||
35df4500 TJB |
1597 | /* bp_location array has BL->OWNER always non-NULL. */ |
1598 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1599 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1600 | bl->owner->number); |
ffce0d52 | 1601 | |
e5dd4106 | 1602 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1603 | content. */ |
1604 | ||
35df4500 TJB |
1605 | if (bl->address >= bp_location_placed_address_before_address_max |
1606 | && memaddr + len <= (bl->address | |
1607 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1608 | break; |
1609 | ||
35df4500 | 1610 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1611 | continue; |
6c95b8df | 1612 | |
9d497a19 PA |
1613 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1614 | memaddr, len, &bl->target_info, bl->gdbarch); | |
1615 | } | |
c5aa993b | 1616 | |
9d497a19 PA |
1617 | /* Now process single-step breakpoints. These are not found in the |
1618 | bp_location array. */ | |
1619 | for (i = 0; i < 2; i++) | |
1620 | { | |
1621 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
c5aa993b | 1622 | |
9d497a19 PA |
1623 | if (bp_tgt != NULL) |
1624 | { | |
1625 | struct gdbarch *gdbarch = single_step_gdbarch[i]; | |
c5aa993b | 1626 | |
9d497a19 PA |
1627 | one_breakpoint_xfer_memory (readbuf, writebuf, writebuf_org, |
1628 | memaddr, len, bp_tgt, gdbarch); | |
1629 | } | |
1630 | } | |
c906108c | 1631 | } |
9d497a19 | 1632 | |
c906108c | 1633 | \f |
c5aa993b | 1634 | |
b775012e LM |
1635 | /* Return true if BPT is either a software breakpoint or a hardware |
1636 | breakpoint. */ | |
1637 | ||
1638 | int | |
1639 | is_breakpoint (const struct breakpoint *bpt) | |
1640 | { | |
1641 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1642 | || bpt->type == bp_hardware_breakpoint |
1643 | || bpt->type == bp_dprintf); | |
b775012e LM |
1644 | } |
1645 | ||
60e1c644 PA |
1646 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1647 | ||
a5606eee | 1648 | static int |
d77f58be | 1649 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1650 | { |
1651 | return (bpt->type == bp_hardware_watchpoint | |
1652 | || bpt->type == bp_read_watchpoint | |
1653 | || bpt->type == bp_access_watchpoint); | |
1654 | } | |
7270d8f2 | 1655 | |
60e1c644 PA |
1656 | /* Return true if BPT is of any watchpoint kind, hardware or |
1657 | software. */ | |
1658 | ||
3a5c3e22 | 1659 | int |
d77f58be | 1660 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1661 | { |
1662 | return (is_hardware_watchpoint (bpt) | |
1663 | || bpt->type == bp_watchpoint); | |
1664 | } | |
1665 | ||
3a5c3e22 PA |
1666 | /* Returns true if the current thread and its running state are safe |
1667 | to evaluate or update watchpoint B. Watchpoints on local | |
1668 | expressions need to be evaluated in the context of the thread that | |
1669 | was current when the watchpoint was created, and, that thread needs | |
1670 | to be stopped to be able to select the correct frame context. | |
1671 | Watchpoints on global expressions can be evaluated on any thread, | |
1672 | and in any state. It is presently left to the target allowing | |
1673 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1674 | |
1675 | static int | |
3a5c3e22 | 1676 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1677 | { |
d0d8b0c6 JK |
1678 | return (b->base.pspace == current_program_space |
1679 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1680 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1681 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1682 | } |
1683 | ||
d0fb5eae JK |
1684 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1685 | associated bp_watchpoint_scope breakpoint. */ | |
1686 | ||
1687 | static void | |
3a5c3e22 | 1688 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1689 | { |
3a5c3e22 | 1690 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1691 | |
1692 | if (b->related_breakpoint != b) | |
1693 | { | |
1694 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1695 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1696 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1697 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1698 | b->related_breakpoint = b; | |
1699 | } | |
1700 | b->disposition = disp_del_at_next_stop; | |
1701 | } | |
1702 | ||
567e1b4e JB |
1703 | /* Assuming that B is a watchpoint: |
1704 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1705 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1706 | - Evaluate the condition if there is one, and store the result |
1707 | in b->loc->cond. | |
a5606eee VP |
1708 | - Update the list of values that must be watched in B->loc. |
1709 | ||
4a64f543 MS |
1710 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1711 | nothing. If this is local watchpoint that is out of scope, delete | |
1712 | it. | |
1713 | ||
1714 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1715 | removed + inserted on each stop here. Normal breakpoints must | |
1716 | never be removed because they might be missed by a running thread | |
1717 | when debugging in non-stop mode. On the other hand, hardware | |
1718 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1719 | to each LWP since they are stored in each LWP's hardware debug | |
1720 | registers. Therefore, such LWP must be stopped first in order to | |
1721 | be able to modify its hardware watchpoints. | |
1722 | ||
1723 | Hardware watchpoints must be reset exactly once after being | |
1724 | presented to the user. It cannot be done sooner, because it would | |
1725 | reset the data used to present the watchpoint hit to the user. And | |
1726 | it must not be done later because it could display the same single | |
1727 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1728 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1729 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1730 | not user-visible - its hit is suppressed if the memory content has | |
1731 | not changed. | |
1732 | ||
1733 | The following constraints influence the location where we can reset | |
1734 | hardware watchpoints: | |
1735 | ||
1736 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1737 | called several times when GDB stops. | |
1738 | ||
1739 | [linux] | |
1740 | * Multiple hardware watchpoints can be hit at the same time, | |
1741 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1742 | hit at a time as the reason for stopping, and all the other hits | |
1743 | are presented later, one after the other, each time the user | |
1744 | requests the execution to be resumed. Execution is not resumed | |
1745 | for the threads still having pending hit event stored in | |
1746 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1747 | the inferior on the first stop the thread hit event is kept being | |
1748 | reported from its cached value by linux_nat_stopped_data_address | |
1749 | until the real thread resume happens after the watchpoint gets | |
1750 | presented and thus its LWP_INFO->STATUS gets reset. | |
1751 | ||
1752 | Therefore the hardware watchpoint hit can get safely reset on the | |
1753 | watchpoint removal from inferior. */ | |
a79d3c27 | 1754 | |
b40ce68a | 1755 | static void |
3a5c3e22 | 1756 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1757 | { |
a5606eee | 1758 | int within_current_scope; |
a5606eee | 1759 | struct frame_id saved_frame_id; |
66076460 | 1760 | int frame_saved; |
a5606eee | 1761 | |
f6bc2008 PA |
1762 | /* If this is a local watchpoint, we only want to check if the |
1763 | watchpoint frame is in scope if the current thread is the thread | |
1764 | that was used to create the watchpoint. */ | |
1765 | if (!watchpoint_in_thread_scope (b)) | |
1766 | return; | |
1767 | ||
3a5c3e22 | 1768 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1769 | return; |
1770 | ||
66076460 | 1771 | frame_saved = 0; |
a5606eee VP |
1772 | |
1773 | /* Determine if the watchpoint is within scope. */ | |
1774 | if (b->exp_valid_block == NULL) | |
1775 | within_current_scope = 1; | |
1776 | else | |
1777 | { | |
b5db5dfc UW |
1778 | struct frame_info *fi = get_current_frame (); |
1779 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1780 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1781 | ||
1782 | /* If we're in a function epilogue, unwinding may not work | |
1783 | properly, so do not attempt to recreate locations at this | |
1784 | point. See similar comments in watchpoint_check. */ | |
1785 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1786 | return; | |
66076460 DJ |
1787 | |
1788 | /* Save the current frame's ID so we can restore it after | |
1789 | evaluating the watchpoint expression on its own frame. */ | |
1790 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1791 | took a frame parameter, so that we didn't have to change the | |
1792 | selected frame. */ | |
1793 | frame_saved = 1; | |
1794 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1795 | ||
a5606eee VP |
1796 | fi = frame_find_by_id (b->watchpoint_frame); |
1797 | within_current_scope = (fi != NULL); | |
1798 | if (within_current_scope) | |
1799 | select_frame (fi); | |
1800 | } | |
1801 | ||
b5db5dfc UW |
1802 | /* We don't free locations. They are stored in the bp_location array |
1803 | and update_global_location_list will eventually delete them and | |
1804 | remove breakpoints if needed. */ | |
3a5c3e22 | 1805 | b->base.loc = NULL; |
b5db5dfc | 1806 | |
a5606eee VP |
1807 | if (within_current_scope && reparse) |
1808 | { | |
bbc13ae3 | 1809 | const char *s; |
d63d0675 | 1810 | |
a5606eee VP |
1811 | if (b->exp) |
1812 | { | |
1813 | xfree (b->exp); | |
1814 | b->exp = NULL; | |
1815 | } | |
d63d0675 | 1816 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1817 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1818 | /* If the meaning of expression itself changed, the old value is |
1819 | no longer relevant. We don't want to report a watchpoint hit | |
1820 | to the user when the old value and the new value may actually | |
1821 | be completely different objects. */ | |
1822 | value_free (b->val); | |
fa4727a6 DJ |
1823 | b->val = NULL; |
1824 | b->val_valid = 0; | |
60e1c644 PA |
1825 | |
1826 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1827 | expression is stored in the breakpoint object, not in the | |
1828 | locations (re)created below. */ | |
3a5c3e22 | 1829 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1830 | { |
1831 | if (b->cond_exp != NULL) | |
1832 | { | |
1833 | xfree (b->cond_exp); | |
1834 | b->cond_exp = NULL; | |
1835 | } | |
1836 | ||
3a5c3e22 | 1837 | s = b->base.cond_string; |
1bb9788d | 1838 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1839 | } |
a5606eee | 1840 | } |
a5606eee VP |
1841 | |
1842 | /* If we failed to parse the expression, for example because | |
1843 | it refers to a global variable in a not-yet-loaded shared library, | |
1844 | don't try to insert watchpoint. We don't automatically delete | |
1845 | such watchpoint, though, since failure to parse expression | |
1846 | is different from out-of-scope watchpoint. */ | |
e8369a73 | 1847 | if (!target_has_execution) |
2d134ed3 PA |
1848 | { |
1849 | /* Without execution, memory can't change. No use to try and | |
1850 | set watchpoint locations. The watchpoint will be reset when | |
1851 | the target gains execution, through breakpoint_re_set. */ | |
e8369a73 AB |
1852 | if (!can_use_hw_watchpoints) |
1853 | { | |
1854 | if (b->base.ops->works_in_software_mode (&b->base)) | |
1855 | b->base.type = bp_watchpoint; | |
1856 | else | |
638aa5a1 AB |
1857 | error (_("Can't set read/access watchpoint when " |
1858 | "hardware watchpoints are disabled.")); | |
e8369a73 | 1859 | } |
2d134ed3 PA |
1860 | } |
1861 | else if (within_current_scope && b->exp) | |
a5606eee | 1862 | { |
0cf6dd15 | 1863 | int pc = 0; |
fa4727a6 | 1864 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1865 | struct program_space *frame_pspace; |
a5606eee | 1866 | |
3a1115a0 | 1867 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain, 0); |
a5606eee | 1868 | |
a5606eee VP |
1869 | /* Avoid setting b->val if it's already set. The meaning of |
1870 | b->val is 'the last value' user saw, and we should update | |
1871 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1872 | happens, the code that reports it updates b->val directly. |
1873 | We don't keep track of the memory value for masked | |
1874 | watchpoints. */ | |
3a5c3e22 | 1875 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1876 | { |
1877 | b->val = v; | |
1878 | b->val_valid = 1; | |
1879 | } | |
a5606eee | 1880 | |
2d134ed3 PA |
1881 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1882 | ||
a5606eee | 1883 | /* Look at each value on the value chain. */ |
9fa40276 | 1884 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1885 | { |
1886 | /* If it's a memory location, and GDB actually needed | |
1887 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1888 | must watch it. If the first value returned is |
1889 | still lazy, that means an error occurred reading it; | |
1890 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1891 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1892 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1893 | { |
1894 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1895 | |
a5606eee VP |
1896 | /* We only watch structs and arrays if user asked |
1897 | for it explicitly, never if they just happen to | |
1898 | appear in the middle of some value chain. */ | |
fa4727a6 | 1899 | if (v == result |
a5606eee VP |
1900 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1901 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1902 | { | |
1903 | CORE_ADDR addr; | |
744a8059 | 1904 | int type; |
a5606eee VP |
1905 | struct bp_location *loc, **tmp; |
1906 | ||
42ae5230 | 1907 | addr = value_address (v); |
a5606eee | 1908 | type = hw_write; |
3a5c3e22 | 1909 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1910 | type = hw_read; |
3a5c3e22 | 1911 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1912 | type = hw_access; |
3a5c3e22 PA |
1913 | |
1914 | loc = allocate_bp_location (&b->base); | |
1915 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1916 | ; |
1917 | *tmp = loc; | |
a6d9a66e | 1918 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1919 | |
1920 | loc->pspace = frame_pspace; | |
a5606eee | 1921 | loc->address = addr; |
744a8059 | 1922 | loc->length = TYPE_LENGTH (value_type (v)); |
a5606eee VP |
1923 | loc->watchpoint_type = type; |
1924 | } | |
1925 | } | |
9fa40276 TJB |
1926 | } |
1927 | ||
1928 | /* Change the type of breakpoint between hardware assisted or | |
1929 | an ordinary watchpoint depending on the hardware support | |
1930 | and free hardware slots. REPARSE is set when the inferior | |
1931 | is started. */ | |
a9634178 | 1932 | if (reparse) |
9fa40276 | 1933 | { |
e09342b5 | 1934 | int reg_cnt; |
9fa40276 TJB |
1935 | enum bp_loc_type loc_type; |
1936 | struct bp_location *bl; | |
a5606eee | 1937 | |
a9634178 | 1938 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1939 | |
1940 | if (reg_cnt) | |
9fa40276 TJB |
1941 | { |
1942 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1943 | enum bptype type; |
9fa40276 | 1944 | |
a9634178 TJB |
1945 | /* Use an exact watchpoint when there's only one memory region to be |
1946 | watched, and only one debug register is needed to watch it. */ | |
1947 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1948 | ||
9fa40276 | 1949 | /* We need to determine how many resources are already |
e09342b5 TJB |
1950 | used for all other hardware watchpoints plus this one |
1951 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1952 | this watchpoint in as well. */ |
1953 | ||
1954 | /* If this is a software watchpoint, we try to turn it | |
1955 | to a hardware one -- count resources as if B was of | |
1956 | hardware watchpoint type. */ | |
1957 | type = b->base.type; | |
1958 | if (type == bp_watchpoint) | |
1959 | type = bp_hardware_watchpoint; | |
1960 | ||
1961 | /* This watchpoint may or may not have been placed on | |
1962 | the list yet at this point (it won't be in the list | |
1963 | if we're trying to create it for the first time, | |
1964 | through watch_command), so always account for it | |
1965 | manually. */ | |
1966 | ||
1967 | /* Count resources used by all watchpoints except B. */ | |
1968 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1969 | ||
1970 | /* Add in the resources needed for B. */ | |
1971 | i += hw_watchpoint_use_count (&b->base); | |
1972 | ||
1973 | target_resources_ok | |
1974 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1975 | if (target_resources_ok <= 0) |
a9634178 | 1976 | { |
3a5c3e22 | 1977 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1978 | |
1979 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1980 | error (_("Target does not support this type of " |
1981 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1982 | else if (target_resources_ok < 0 && !sw_mode) |
1983 | error (_("There are not enough available hardware " | |
1984 | "resources for this watchpoint.")); | |
a1398e0c PA |
1985 | |
1986 | /* Downgrade to software watchpoint. */ | |
1987 | b->base.type = bp_watchpoint; | |
1988 | } | |
1989 | else | |
1990 | { | |
1991 | /* If this was a software watchpoint, we've just | |
1992 | found we have enough resources to turn it to a | |
1993 | hardware watchpoint. Otherwise, this is a | |
1994 | nop. */ | |
1995 | b->base.type = type; | |
a9634178 | 1996 | } |
9fa40276 | 1997 | } |
3a5c3e22 | 1998 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
638aa5a1 AB |
1999 | { |
2000 | if (!can_use_hw_watchpoints) | |
2001 | error (_("Can't set read/access watchpoint when " | |
2002 | "hardware watchpoints are disabled.")); | |
2003 | else | |
2004 | error (_("Expression cannot be implemented with " | |
2005 | "read/access watchpoint.")); | |
2006 | } | |
9fa40276 | 2007 | else |
3a5c3e22 | 2008 | b->base.type = bp_watchpoint; |
9fa40276 | 2009 | |
3a5c3e22 | 2010 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 2011 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 2012 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
2013 | bl->loc_type = loc_type; |
2014 | } | |
2015 | ||
2016 | for (v = val_chain; v; v = next) | |
2017 | { | |
a5606eee VP |
2018 | next = value_next (v); |
2019 | if (v != b->val) | |
2020 | value_free (v); | |
2021 | } | |
2022 | ||
c7437ca6 PA |
2023 | /* If a software watchpoint is not watching any memory, then the |
2024 | above left it without any location set up. But, | |
2025 | bpstat_stop_status requires a location to be able to report | |
2026 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 2027 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 2028 | { |
3a5c3e22 PA |
2029 | struct breakpoint *base = &b->base; |
2030 | base->loc = allocate_bp_location (base); | |
2031 | base->loc->pspace = frame_pspace; | |
2032 | base->loc->address = -1; | |
2033 | base->loc->length = -1; | |
2034 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 2035 | } |
a5606eee VP |
2036 | } |
2037 | else if (!within_current_scope) | |
7270d8f2 | 2038 | { |
ac74f770 MS |
2039 | printf_filtered (_("\ |
2040 | Watchpoint %d deleted because the program has left the block\n\ | |
2041 | in which its expression is valid.\n"), | |
3a5c3e22 | 2042 | b->base.number); |
d0fb5eae | 2043 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 2044 | } |
a5606eee VP |
2045 | |
2046 | /* Restore the selected frame. */ | |
66076460 DJ |
2047 | if (frame_saved) |
2048 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
2049 | } |
2050 | ||
a5606eee | 2051 | |
74960c60 | 2052 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
2053 | inserted in the inferior. We don't differentiate the type of BL's owner |
2054 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
2055 | breakpoint_ops is not defined, because in insert_bp_location, | |
2056 | tracepoint's insert_location will not be called. */ | |
74960c60 | 2057 | static int |
35df4500 | 2058 | should_be_inserted (struct bp_location *bl) |
74960c60 | 2059 | { |
35df4500 | 2060 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
2061 | return 0; |
2062 | ||
35df4500 | 2063 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2064 | return 0; |
2065 | ||
35df4500 | 2066 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2067 | return 0; |
2068 | ||
f8eba3c6 TT |
2069 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2070 | return 0; | |
2071 | ||
56710373 PA |
2072 | /* This is set for example, when we're attached to the parent of a |
2073 | vfork, and have detached from the child. The child is running | |
2074 | free, and we expect it to do an exec or exit, at which point the | |
2075 | OS makes the parent schedulable again (and the target reports | |
2076 | that the vfork is done). Until the child is done with the shared | |
2077 | memory region, do not insert breakpoints in the parent, otherwise | |
2078 | the child could still trip on the parent's breakpoints. Since | |
2079 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2080 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2081 | return 0; |
2082 | ||
31e77af2 PA |
2083 | /* Don't insert a breakpoint if we're trying to step past its |
2084 | location. */ | |
2085 | if ((bl->loc_type == bp_loc_software_breakpoint | |
2086 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
2087 | && stepping_past_instruction_at (bl->pspace->aspace, | |
2088 | bl->address)) | |
2089 | return 0; | |
2090 | ||
74960c60 VP |
2091 | return 1; |
2092 | } | |
2093 | ||
934709f0 PW |
2094 | /* Same as should_be_inserted but does the check assuming |
2095 | that the location is not duplicated. */ | |
2096 | ||
2097 | static int | |
2098 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2099 | { | |
2100 | int result; | |
2101 | const int save_duplicate = bl->duplicate; | |
2102 | ||
2103 | bl->duplicate = 0; | |
2104 | result = should_be_inserted (bl); | |
2105 | bl->duplicate = save_duplicate; | |
2106 | return result; | |
2107 | } | |
2108 | ||
b775012e LM |
2109 | /* Parses a conditional described by an expression COND into an |
2110 | agent expression bytecode suitable for evaluation | |
2111 | by the bytecode interpreter. Return NULL if there was | |
2112 | any error during parsing. */ | |
2113 | ||
2114 | static struct agent_expr * | |
2115 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
2116 | { | |
2117 | struct agent_expr *aexpr = NULL; | |
b775012e LM |
2118 | volatile struct gdb_exception ex; |
2119 | ||
2120 | if (!cond) | |
2121 | return NULL; | |
2122 | ||
2123 | /* We don't want to stop processing, so catch any errors | |
2124 | that may show up. */ | |
2125 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2126 | { | |
2127 | aexpr = gen_eval_for_expr (scope, cond); | |
2128 | } | |
2129 | ||
2130 | if (ex.reason < 0) | |
2131 | { | |
2132 | /* If we got here, it means the condition could not be parsed to a valid | |
2133 | bytecode expression and thus can't be evaluated on the target's side. | |
2134 | It's no use iterating through the conditions. */ | |
2135 | return NULL; | |
2136 | } | |
2137 | ||
2138 | /* We have a valid agent expression. */ | |
2139 | return aexpr; | |
2140 | } | |
2141 | ||
2142 | /* Based on location BL, create a list of breakpoint conditions to be | |
2143 | passed on to the target. If we have duplicated locations with different | |
2144 | conditions, we will add such conditions to the list. The idea is that the | |
2145 | target will evaluate the list of conditions and will only notify GDB when | |
2146 | one of them is true. */ | |
2147 | ||
2148 | static void | |
2149 | build_target_condition_list (struct bp_location *bl) | |
2150 | { | |
2151 | struct bp_location **locp = NULL, **loc2p; | |
2152 | int null_condition_or_parse_error = 0; | |
2153 | int modified = bl->needs_update; | |
2154 | struct bp_location *loc; | |
2155 | ||
8b4f3082 PA |
2156 | /* Release conditions left over from a previous insert. */ |
2157 | VEC_free (agent_expr_p, bl->target_info.conditions); | |
2158 | ||
b775012e LM |
2159 | /* This is only meaningful if the target is |
2160 | evaluating conditions and if the user has | |
2161 | opted for condition evaluation on the target's | |
2162 | side. */ | |
2163 | if (gdb_evaluates_breakpoint_condition_p () | |
2164 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2165 | return; | |
2166 | ||
2167 | /* Do a first pass to check for locations with no assigned | |
2168 | conditions or conditions that fail to parse to a valid agent expression | |
2169 | bytecode. If any of these happen, then it's no use to send conditions | |
2170 | to the target since this location will always trigger and generate a | |
2171 | response back to GDB. */ | |
2172 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2173 | { | |
2174 | loc = (*loc2p); | |
2175 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2176 | { | |
2177 | if (modified) | |
2178 | { | |
2179 | struct agent_expr *aexpr; | |
2180 | ||
2181 | /* Re-parse the conditions since something changed. In that | |
2182 | case we already freed the condition bytecodes (see | |
2183 | force_breakpoint_reinsertion). We just | |
2184 | need to parse the condition to bytecodes again. */ | |
2185 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2186 | loc->cond_bytecode = aexpr; | |
2187 | ||
2188 | /* Check if we managed to parse the conditional expression | |
2189 | correctly. If not, we will not send this condition | |
2190 | to the target. */ | |
2191 | if (aexpr) | |
2192 | continue; | |
2193 | } | |
2194 | ||
2195 | /* If we have a NULL bytecode expression, it means something | |
2196 | went wrong or we have a null condition expression. */ | |
2197 | if (!loc->cond_bytecode) | |
2198 | { | |
2199 | null_condition_or_parse_error = 1; | |
2200 | break; | |
2201 | } | |
2202 | } | |
2203 | } | |
2204 | ||
2205 | /* If any of these happened, it means we will have to evaluate the conditions | |
2206 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2207 | for all the other duplicate locations, thus we free all of them here. | |
2208 | ||
2209 | This is so we have a finer control over which locations' conditions are | |
2210 | being evaluated by GDB or the remote stub. */ | |
2211 | if (null_condition_or_parse_error) | |
2212 | { | |
2213 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2214 | { | |
2215 | loc = (*loc2p); | |
2216 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2217 | { | |
2218 | /* Only go as far as the first NULL bytecode is | |
2219 | located. */ | |
2220 | if (!loc->cond_bytecode) | |
2221 | return; | |
2222 | ||
2223 | free_agent_expr (loc->cond_bytecode); | |
2224 | loc->cond_bytecode = NULL; | |
2225 | } | |
2226 | } | |
2227 | } | |
2228 | ||
2229 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2230 | for this location's address. */ | |
2231 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2232 | { | |
2233 | loc = (*loc2p); | |
2234 | if (loc->cond | |
2235 | && is_breakpoint (loc->owner) | |
2236 | && loc->pspace->num == bl->pspace->num | |
2237 | && loc->owner->enable_state == bp_enabled | |
2238 | && loc->enabled) | |
2239 | /* Add the condition to the vector. This will be used later to send the | |
2240 | conditions to the target. */ | |
2241 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2242 | loc->cond_bytecode); | |
2243 | } | |
2244 | ||
2245 | return; | |
2246 | } | |
2247 | ||
d3ce09f5 SS |
2248 | /* Parses a command described by string CMD into an agent expression |
2249 | bytecode suitable for evaluation by the bytecode interpreter. | |
2250 | Return NULL if there was any error during parsing. */ | |
2251 | ||
2252 | static struct agent_expr * | |
2253 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) | |
2254 | { | |
2255 | struct cleanup *old_cleanups = 0; | |
2256 | struct expression *expr, **argvec; | |
2257 | struct agent_expr *aexpr = NULL; | |
d3ce09f5 | 2258 | volatile struct gdb_exception ex; |
bbc13ae3 KS |
2259 | const char *cmdrest; |
2260 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2261 | struct format_piece *fpieces; |
2262 | int nargs; | |
2263 | struct gdbarch *gdbarch = get_current_arch (); | |
2264 | ||
2265 | if (!cmd) | |
2266 | return NULL; | |
2267 | ||
2268 | cmdrest = cmd; | |
2269 | ||
2270 | if (*cmdrest == ',') | |
2271 | ++cmdrest; | |
bbc13ae3 | 2272 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2273 | |
2274 | if (*cmdrest++ != '"') | |
2275 | error (_("No format string following the location")); | |
2276 | ||
2277 | format_start = cmdrest; | |
2278 | ||
2279 | fpieces = parse_format_string (&cmdrest); | |
2280 | ||
2281 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2282 | ||
2283 | format_end = cmdrest; | |
2284 | ||
2285 | if (*cmdrest++ != '"') | |
2286 | error (_("Bad format string, non-terminated '\"'.")); | |
2287 | ||
bbc13ae3 | 2288 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2289 | |
2290 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2291 | error (_("Invalid argument syntax")); | |
2292 | ||
2293 | if (*cmdrest == ',') | |
2294 | cmdrest++; | |
bbc13ae3 | 2295 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2296 | |
2297 | /* For each argument, make an expression. */ | |
2298 | ||
2299 | argvec = (struct expression **) alloca (strlen (cmd) | |
2300 | * sizeof (struct expression *)); | |
2301 | ||
2302 | nargs = 0; | |
2303 | while (*cmdrest != '\0') | |
2304 | { | |
bbc13ae3 | 2305 | const char *cmd1; |
d3ce09f5 SS |
2306 | |
2307 | cmd1 = cmdrest; | |
2308 | expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); | |
2309 | argvec[nargs++] = expr; | |
2310 | cmdrest = cmd1; | |
2311 | if (*cmdrest == ',') | |
2312 | ++cmdrest; | |
2313 | } | |
2314 | ||
2315 | /* We don't want to stop processing, so catch any errors | |
2316 | that may show up. */ | |
2317 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2318 | { | |
2319 | aexpr = gen_printf (scope, gdbarch, 0, 0, | |
2320 | format_start, format_end - format_start, | |
2321 | fpieces, nargs, argvec); | |
2322 | } | |
2323 | ||
752eb8b4 TT |
2324 | do_cleanups (old_cleanups); |
2325 | ||
d3ce09f5 SS |
2326 | if (ex.reason < 0) |
2327 | { | |
2328 | /* If we got here, it means the command could not be parsed to a valid | |
2329 | bytecode expression and thus can't be evaluated on the target's side. | |
2330 | It's no use iterating through the other commands. */ | |
2331 | return NULL; | |
2332 | } | |
2333 | ||
d3ce09f5 SS |
2334 | /* We have a valid agent expression, return it. */ |
2335 | return aexpr; | |
2336 | } | |
2337 | ||
2338 | /* Based on location BL, create a list of breakpoint commands to be | |
2339 | passed on to the target. If we have duplicated locations with | |
2340 | different commands, we will add any such to the list. */ | |
2341 | ||
2342 | static void | |
2343 | build_target_command_list (struct bp_location *bl) | |
2344 | { | |
2345 | struct bp_location **locp = NULL, **loc2p; | |
2346 | int null_command_or_parse_error = 0; | |
2347 | int modified = bl->needs_update; | |
2348 | struct bp_location *loc; | |
2349 | ||
8b4f3082 PA |
2350 | /* Release commands left over from a previous insert. */ |
2351 | VEC_free (agent_expr_p, bl->target_info.tcommands); | |
2352 | ||
d3ce09f5 SS |
2353 | /* For now, limit to agent-style dprintf breakpoints. */ |
2354 | if (bl->owner->type != bp_dprintf | |
2355 | || strcmp (dprintf_style, dprintf_style_agent) != 0) | |
2356 | return; | |
2357 | ||
2358 | if (!target_can_run_breakpoint_commands ()) | |
2359 | return; | |
2360 | ||
2361 | /* Do a first pass to check for locations with no assigned | |
2362 | conditions or conditions that fail to parse to a valid agent expression | |
2363 | bytecode. If any of these happen, then it's no use to send conditions | |
2364 | to the target since this location will always trigger and generate a | |
2365 | response back to GDB. */ | |
2366 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2367 | { | |
2368 | loc = (*loc2p); | |
2369 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2370 | { | |
2371 | if (modified) | |
2372 | { | |
2373 | struct agent_expr *aexpr; | |
2374 | ||
2375 | /* Re-parse the commands since something changed. In that | |
2376 | case we already freed the command bytecodes (see | |
2377 | force_breakpoint_reinsertion). We just | |
2378 | need to parse the command to bytecodes again. */ | |
2379 | aexpr = parse_cmd_to_aexpr (bl->address, | |
2380 | loc->owner->extra_string); | |
2381 | loc->cmd_bytecode = aexpr; | |
2382 | ||
2383 | if (!aexpr) | |
2384 | continue; | |
2385 | } | |
2386 | ||
2387 | /* If we have a NULL bytecode expression, it means something | |
2388 | went wrong or we have a null command expression. */ | |
2389 | if (!loc->cmd_bytecode) | |
2390 | { | |
2391 | null_command_or_parse_error = 1; | |
2392 | break; | |
2393 | } | |
2394 | } | |
2395 | } | |
2396 | ||
2397 | /* If anything failed, then we're not doing target-side commands, | |
2398 | and so clean up. */ | |
2399 | if (null_command_or_parse_error) | |
2400 | { | |
2401 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2402 | { | |
2403 | loc = (*loc2p); | |
2404 | if (is_breakpoint (loc->owner) | |
2405 | && loc->pspace->num == bl->pspace->num) | |
2406 | { | |
2407 | /* Only go as far as the first NULL bytecode is | |
2408 | located. */ | |
40fb6c5e | 2409 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2410 | return; |
2411 | ||
40fb6c5e HZ |
2412 | free_agent_expr (loc->cmd_bytecode); |
2413 | loc->cmd_bytecode = NULL; | |
d3ce09f5 SS |
2414 | } |
2415 | } | |
2416 | } | |
2417 | ||
2418 | /* No NULL commands or failed bytecode generation. Build a command list | |
2419 | for this location's address. */ | |
2420 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2421 | { | |
2422 | loc = (*loc2p); | |
2423 | if (loc->owner->extra_string | |
2424 | && is_breakpoint (loc->owner) | |
2425 | && loc->pspace->num == bl->pspace->num | |
2426 | && loc->owner->enable_state == bp_enabled | |
2427 | && loc->enabled) | |
2428 | /* Add the command to the vector. This will be used later | |
2429 | to send the commands to the target. */ | |
2430 | VEC_safe_push (agent_expr_p, bl->target_info.tcommands, | |
2431 | loc->cmd_bytecode); | |
2432 | } | |
2433 | ||
2434 | bl->target_info.persist = 0; | |
2435 | /* Maybe flag this location as persistent. */ | |
2436 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2437 | bl->target_info.persist = 1; | |
2438 | } | |
2439 | ||
35df4500 TJB |
2440 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2441 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2442 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2443 | Returns 0 for success, 1 if the bp_location type is not supported or |
2444 | -1 for failure. | |
879bfdc2 | 2445 | |
4a64f543 MS |
2446 | NOTE drow/2003-09-09: This routine could be broken down to an |
2447 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2448 | static int |
35df4500 | 2449 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2450 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2451 | int *disabled_breaks, |
dd61ec5c MW |
2452 | int *hw_breakpoint_error, |
2453 | int *hw_bp_error_explained_already) | |
879bfdc2 | 2454 | { |
0000e5cc PA |
2455 | enum errors bp_err = GDB_NO_ERROR; |
2456 | const char *bp_err_message = NULL; | |
c90a6fb7 | 2457 | volatile struct gdb_exception e; |
879bfdc2 | 2458 | |
b775012e | 2459 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2460 | return 0; |
2461 | ||
35c63cd8 JB |
2462 | /* Note we don't initialize bl->target_info, as that wipes out |
2463 | the breakpoint location's shadow_contents if the breakpoint | |
2464 | is still inserted at that location. This in turn breaks | |
2465 | target_read_memory which depends on these buffers when | |
2466 | a memory read is requested at the breakpoint location: | |
2467 | Once the target_info has been wiped, we fail to see that | |
2468 | we have a breakpoint inserted at that address and thus | |
2469 | read the breakpoint instead of returning the data saved in | |
2470 | the breakpoint location's shadow contents. */ | |
35df4500 TJB |
2471 | bl->target_info.placed_address = bl->address; |
2472 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 2473 | bl->target_info.length = bl->length; |
8181d85f | 2474 | |
b775012e LM |
2475 | /* When working with target-side conditions, we must pass all the conditions |
2476 | for the same breakpoint address down to the target since GDB will not | |
2477 | insert those locations. With a list of breakpoint conditions, the target | |
2478 | can decide when to stop and notify GDB. */ | |
2479 | ||
2480 | if (is_breakpoint (bl->owner)) | |
2481 | { | |
2482 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2483 | build_target_command_list (bl); |
2484 | /* Reset the modification marker. */ | |
b775012e LM |
2485 | bl->needs_update = 0; |
2486 | } | |
2487 | ||
35df4500 TJB |
2488 | if (bl->loc_type == bp_loc_software_breakpoint |
2489 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2490 | { |
35df4500 | 2491 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2492 | { |
2493 | /* If the explicitly specified breakpoint type | |
2494 | is not hardware breakpoint, check the memory map to see | |
2495 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2496 | |
765dc015 VP |
2497 | Two important cases are: |
2498 | - location type is not hardware breakpoint, memory | |
2499 | is readonly. We change the type of the location to | |
2500 | hardware breakpoint. | |
4a64f543 MS |
2501 | - location type is hardware breakpoint, memory is |
2502 | read-write. This means we've previously made the | |
2503 | location hardware one, but then the memory map changed, | |
2504 | so we undo. | |
765dc015 | 2505 | |
4a64f543 MS |
2506 | When breakpoints are removed, remove_breakpoints will use |
2507 | location types we've just set here, the only possible | |
2508 | problem is that memory map has changed during running | |
2509 | program, but it's not going to work anyway with current | |
2510 | gdb. */ | |
765dc015 | 2511 | struct mem_region *mr |
35df4500 | 2512 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
2513 | |
2514 | if (mr) | |
2515 | { | |
2516 | if (automatic_hardware_breakpoints) | |
2517 | { | |
765dc015 VP |
2518 | enum bp_loc_type new_type; |
2519 | ||
2520 | if (mr->attrib.mode != MEM_RW) | |
2521 | new_type = bp_loc_hardware_breakpoint; | |
2522 | else | |
2523 | new_type = bp_loc_software_breakpoint; | |
2524 | ||
35df4500 | 2525 | if (new_type != bl->loc_type) |
765dc015 VP |
2526 | { |
2527 | static int said = 0; | |
cc59ec59 | 2528 | |
35df4500 | 2529 | bl->loc_type = new_type; |
765dc015 VP |
2530 | if (!said) |
2531 | { | |
3e43a32a MS |
2532 | fprintf_filtered (gdb_stdout, |
2533 | _("Note: automatically using " | |
2534 | "hardware breakpoints for " | |
2535 | "read-only addresses.\n")); | |
765dc015 VP |
2536 | said = 1; |
2537 | } | |
2538 | } | |
2539 | } | |
35df4500 | 2540 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 2541 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
2542 | warning (_("cannot set software breakpoint " |
2543 | "at readonly address %s"), | |
35df4500 | 2544 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
2545 | } |
2546 | } | |
2547 | ||
879bfdc2 DJ |
2548 | /* First check to see if we have to handle an overlay. */ |
2549 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2550 | || bl->section == NULL |
2551 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2552 | { |
2553 | /* No overlay handling: just set the breakpoint. */ | |
dd61ec5c MW |
2554 | TRY_CATCH (e, RETURN_MASK_ALL) |
2555 | { | |
0000e5cc PA |
2556 | int val; |
2557 | ||
dd61ec5c | 2558 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2559 | if (val) |
2560 | bp_err = GENERIC_ERROR; | |
dd61ec5c MW |
2561 | } |
2562 | if (e.reason < 0) | |
2563 | { | |
0000e5cc PA |
2564 | bp_err = e.error; |
2565 | bp_err_message = e.message; | |
dd61ec5c | 2566 | } |
879bfdc2 DJ |
2567 | } |
2568 | else | |
2569 | { | |
4a64f543 | 2570 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2571 | Shall we set a breakpoint at the LMA? */ |
2572 | if (!overlay_events_enabled) | |
2573 | { | |
2574 | /* Yes -- overlay event support is not active, | |
2575 | so we must try to set a breakpoint at the LMA. | |
2576 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2577 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2578 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2579 | bl->owner->number); |
879bfdc2 DJ |
2580 | else |
2581 | { | |
35df4500 TJB |
2582 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2583 | bl->section); | |
879bfdc2 | 2584 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
2585 | bl->overlay_target_info = bl->target_info; |
2586 | bl->overlay_target_info.placed_address = addr; | |
0000e5cc PA |
2587 | |
2588 | /* No overlay handling: just set the breakpoint. */ | |
2589 | TRY_CATCH (e, RETURN_MASK_ALL) | |
2590 | { | |
2591 | int val; | |
2592 | ||
2593 | val = target_insert_breakpoint (bl->gdbarch, | |
2594 | &bl->overlay_target_info); | |
2595 | if (val) | |
2596 | bp_err = GENERIC_ERROR; | |
2597 | } | |
2598 | if (e.reason < 0) | |
2599 | { | |
2600 | bp_err = e.error; | |
2601 | bp_err_message = e.message; | |
2602 | } | |
2603 | ||
2604 | if (bp_err != GDB_NO_ERROR) | |
99361f52 | 2605 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2606 | "Overlay breakpoint %d " |
2607 | "failed: in ROM?\n", | |
35df4500 | 2608 | bl->owner->number); |
879bfdc2 DJ |
2609 | } |
2610 | } | |
2611 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2612 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2613 | { |
2614 | /* Yes. This overlay section is mapped into memory. */ | |
dd61ec5c MW |
2615 | TRY_CATCH (e, RETURN_MASK_ALL) |
2616 | { | |
0000e5cc PA |
2617 | int val; |
2618 | ||
dd61ec5c | 2619 | val = bl->owner->ops->insert_location (bl); |
0000e5cc PA |
2620 | if (val) |
2621 | bp_err = GENERIC_ERROR; | |
dd61ec5c MW |
2622 | } |
2623 | if (e.reason < 0) | |
2624 | { | |
0000e5cc PA |
2625 | bp_err = e.error; |
2626 | bp_err_message = e.message; | |
dd61ec5c | 2627 | } |
879bfdc2 DJ |
2628 | } |
2629 | else | |
2630 | { | |
2631 | /* No. This breakpoint will not be inserted. | |
2632 | No error, but do not mark the bp as 'inserted'. */ | |
2633 | return 0; | |
2634 | } | |
2635 | } | |
2636 | ||
0000e5cc | 2637 | if (bp_err != GDB_NO_ERROR) |
879bfdc2 DJ |
2638 | { |
2639 | /* Can't set the breakpoint. */ | |
0000e5cc PA |
2640 | |
2641 | /* In some cases, we might not be able to insert a | |
2642 | breakpoint in a shared library that has already been | |
2643 | removed, but we have not yet processed the shlib unload | |
2644 | event. Unfortunately, some targets that implement | |
2645 | breakpoint insertion themselves (necessary if this is a | |
2646 | HW breakpoint, but SW breakpoints likewise) can't tell | |
2647 | why the breakpoint insertion failed (e.g., the remote | |
2648 | target doesn't define error codes), so we must treat | |
2649 | generic errors as memory errors. */ | |
2650 | if ((bp_err == GENERIC_ERROR || bp_err == MEMORY_ERROR) | |
2651 | && solib_name_from_address (bl->pspace, bl->address)) | |
879bfdc2 | 2652 | { |
4a64f543 | 2653 | /* See also: disable_breakpoints_in_shlibs. */ |
35df4500 | 2654 | bl->shlib_disabled = 1; |
8d3788bd | 2655 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2656 | if (!*disabled_breaks) |
2657 | { | |
2658 | fprintf_unfiltered (tmp_error_stream, | |
2659 | "Cannot insert breakpoint %d.\n", | |
2660 | bl->owner->number); | |
2661 | fprintf_unfiltered (tmp_error_stream, | |
2662 | "Temporarily disabling shared " | |
2663 | "library breakpoints:\n"); | |
2664 | } | |
2665 | *disabled_breaks = 1; | |
879bfdc2 | 2666 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2667 | "breakpoint #%d\n", bl->owner->number); |
0000e5cc | 2668 | return 0; |
879bfdc2 DJ |
2669 | } |
2670 | else | |
879bfdc2 | 2671 | { |
35df4500 | 2672 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2673 | { |
0000e5cc PA |
2674 | *hw_breakpoint_error = 1; |
2675 | *hw_bp_error_explained_already = bp_err_message != NULL; | |
dd61ec5c MW |
2676 | fprintf_unfiltered (tmp_error_stream, |
2677 | "Cannot insert hardware breakpoint %d%s", | |
0000e5cc PA |
2678 | bl->owner->number, bp_err_message ? ":" : ".\n"); |
2679 | if (bp_err_message != NULL) | |
2680 | fprintf_unfiltered (tmp_error_stream, "%s.\n", bp_err_message); | |
879bfdc2 DJ |
2681 | } |
2682 | else | |
2683 | { | |
0000e5cc PA |
2684 | if (bp_err_message == NULL) |
2685 | { | |
2686 | char *message | |
2687 | = memory_error_message (TARGET_XFER_E_IO, | |
2688 | bl->gdbarch, bl->address); | |
2689 | struct cleanup *old_chain = make_cleanup (xfree, message); | |
2690 | ||
2691 | fprintf_unfiltered (tmp_error_stream, | |
2692 | "Cannot insert breakpoint %d.\n" | |
2693 | "%s\n", | |
2694 | bl->owner->number, message); | |
2695 | do_cleanups (old_chain); | |
2696 | } | |
2697 | else | |
2698 | { | |
2699 | fprintf_unfiltered (tmp_error_stream, | |
2700 | "Cannot insert breakpoint %d: %s\n", | |
2701 | bl->owner->number, | |
2702 | bp_err_message); | |
2703 | } | |
879bfdc2 | 2704 | } |
0000e5cc | 2705 | return 1; |
879bfdc2 DJ |
2706 | |
2707 | } | |
2708 | } | |
2709 | else | |
35df4500 | 2710 | bl->inserted = 1; |
879bfdc2 | 2711 | |
0000e5cc | 2712 | return 0; |
879bfdc2 DJ |
2713 | } |
2714 | ||
35df4500 | 2715 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2716 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2717 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2718 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2719 | { |
0000e5cc PA |
2720 | int val; |
2721 | ||
77b06cd7 TJB |
2722 | gdb_assert (bl->owner->ops != NULL |
2723 | && bl->owner->ops->insert_location != NULL); | |
2724 | ||
2725 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2726 | |
2727 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2728 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2729 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2730 | { |
2731 | struct bp_location *loc, **loc_temp; | |
2732 | ||
2733 | /* But don't try to insert it, if there's already another | |
2734 | hw_access location that would be considered a duplicate | |
2735 | of this one. */ | |
2736 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2737 | if (loc != bl |
85d721b8 | 2738 | && loc->watchpoint_type == hw_access |
35df4500 | 2739 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2740 | { |
35df4500 TJB |
2741 | bl->duplicate = 1; |
2742 | bl->inserted = 1; | |
2743 | bl->target_info = loc->target_info; | |
2744 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2745 | val = 0; |
2746 | break; | |
2747 | } | |
2748 | ||
2749 | if (val == 1) | |
2750 | { | |
77b06cd7 TJB |
2751 | bl->watchpoint_type = hw_access; |
2752 | val = bl->owner->ops->insert_location (bl); | |
2753 | ||
2754 | if (val) | |
2755 | /* Back to the original value. */ | |
2756 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2757 | } |
2758 | } | |
2759 | ||
35df4500 | 2760 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2761 | } |
2762 | ||
35df4500 | 2763 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2764 | { |
0000e5cc PA |
2765 | int val; |
2766 | ||
77b06cd7 TJB |
2767 | gdb_assert (bl->owner->ops != NULL |
2768 | && bl->owner->ops->insert_location != NULL); | |
2769 | ||
2770 | val = bl->owner->ops->insert_location (bl); | |
2771 | if (val) | |
2772 | { | |
2773 | bl->owner->enable_state = bp_disabled; | |
2774 | ||
2775 | if (val == 1) | |
2776 | warning (_("\ | |
2777 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2778 | of catchpoint."), bl->owner->number); | |
2779 | else | |
2780 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2781 | } | |
2782 | ||
2783 | bl->inserted = (val == 0); | |
1640b821 DJ |
2784 | |
2785 | /* We've already printed an error message if there was a problem | |
2786 | inserting this catchpoint, and we've disabled the catchpoint, | |
2787 | so just return success. */ | |
2788 | return 0; | |
879bfdc2 DJ |
2789 | } |
2790 | ||
2791 | return 0; | |
2792 | } | |
2793 | ||
6c95b8df PA |
2794 | /* This function is called when program space PSPACE is about to be |
2795 | deleted. It takes care of updating breakpoints to not reference | |
2796 | PSPACE anymore. */ | |
2797 | ||
2798 | void | |
2799 | breakpoint_program_space_exit (struct program_space *pspace) | |
2800 | { | |
2801 | struct breakpoint *b, *b_temp; | |
876fa593 | 2802 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2803 | |
2804 | /* Remove any breakpoint that was set through this program space. */ | |
2805 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2806 | { | |
2807 | if (b->pspace == pspace) | |
2808 | delete_breakpoint (b); | |
2809 | } | |
2810 | ||
2811 | /* Breakpoints set through other program spaces could have locations | |
2812 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2813 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2814 | { |
2815 | struct bp_location *tmp; | |
2816 | ||
2817 | if (loc->pspace == pspace) | |
2818 | { | |
2bdf28a0 | 2819 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2820 | if (loc->owner->loc == loc) |
2821 | loc->owner->loc = loc->next; | |
2822 | else | |
2823 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2824 | if (tmp->next == loc) | |
2825 | { | |
2826 | tmp->next = loc->next; | |
2827 | break; | |
2828 | } | |
2829 | } | |
2830 | } | |
2831 | ||
2832 | /* Now update the global location list to permanently delete the | |
2833 | removed locations above. */ | |
2834 | update_global_location_list (0); | |
2835 | } | |
2836 | ||
74960c60 VP |
2837 | /* Make sure all breakpoints are inserted in inferior. |
2838 | Throws exception on any error. | |
2839 | A breakpoint that is already inserted won't be inserted | |
2840 | again, so calling this function twice is safe. */ | |
2841 | void | |
2842 | insert_breakpoints (void) | |
2843 | { | |
2844 | struct breakpoint *bpt; | |
2845 | ||
2846 | ALL_BREAKPOINTS (bpt) | |
2847 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2848 | { |
2849 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2850 | ||
2851 | update_watchpoint (w, 0 /* don't reparse. */); | |
2852 | } | |
74960c60 | 2853 | |
b60e7edf | 2854 | update_global_location_list (1); |
74960c60 | 2855 | |
c35b1492 PA |
2856 | /* update_global_location_list does not insert breakpoints when |
2857 | always_inserted_mode is not enabled. Explicitly insert them | |
2858 | now. */ | |
2859 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
2860 | insert_breakpoint_locations (); |
2861 | } | |
2862 | ||
20388dd6 YQ |
2863 | /* Invoke CALLBACK for each of bp_location. */ |
2864 | ||
2865 | void | |
2866 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2867 | { | |
2868 | struct bp_location *loc, **loc_tmp; | |
2869 | ||
2870 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2871 | { | |
2872 | callback (loc, NULL); | |
2873 | } | |
2874 | } | |
2875 | ||
b775012e LM |
2876 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2877 | target. It is the case with deleting and disabling of breakpoints when using | |
2878 | always-inserted mode. */ | |
2879 | ||
2880 | static void | |
2881 | update_inserted_breakpoint_locations (void) | |
2882 | { | |
2883 | struct bp_location *bl, **blp_tmp; | |
2884 | int error_flag = 0; | |
2885 | int val = 0; | |
2886 | int disabled_breaks = 0; | |
2887 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2888 | int hw_bp_details_reported = 0; |
b775012e LM |
2889 | |
2890 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
2891 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
2892 | ||
2893 | /* Explicitly mark the warning -- this will only be printed if | |
2894 | there was an error. */ | |
2895 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
2896 | ||
2897 | save_current_space_and_thread (); | |
2898 | ||
2899 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2900 | { | |
2901 | /* We only want to update software breakpoints and hardware | |
2902 | breakpoints. */ | |
2903 | if (!is_breakpoint (bl->owner)) | |
2904 | continue; | |
2905 | ||
2906 | /* We only want to update locations that are already inserted | |
2907 | and need updating. This is to avoid unwanted insertion during | |
2908 | deletion of breakpoints. */ | |
2909 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2910 | continue; | |
2911 | ||
2912 | switch_to_program_space_and_thread (bl->pspace); | |
2913 | ||
2914 | /* For targets that support global breakpoints, there's no need | |
2915 | to select an inferior to insert breakpoint to. In fact, even | |
2916 | if we aren't attached to any process yet, we should still | |
2917 | insert breakpoints. */ | |
f5656ead | 2918 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2919 | && ptid_equal (inferior_ptid, null_ptid)) |
2920 | continue; | |
2921 | ||
2922 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
dd61ec5c | 2923 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2924 | if (val) |
2925 | error_flag = val; | |
2926 | } | |
2927 | ||
2928 | if (error_flag) | |
2929 | { | |
2930 | target_terminal_ours_for_output (); | |
2931 | error_stream (tmp_error_stream); | |
2932 | } | |
2933 | ||
2934 | do_cleanups (cleanups); | |
2935 | } | |
2936 | ||
c30eee59 | 2937 | /* Used when starting or continuing the program. */ |
c906108c | 2938 | |
74960c60 VP |
2939 | static void |
2940 | insert_breakpoint_locations (void) | |
c906108c | 2941 | { |
a5606eee | 2942 | struct breakpoint *bpt; |
35df4500 | 2943 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2944 | int error_flag = 0; |
c906108c | 2945 | int val = 0; |
3fbb6ffa | 2946 | int disabled_breaks = 0; |
81d0cc19 | 2947 | int hw_breakpoint_error = 0; |
dd61ec5c | 2948 | int hw_bp_error_explained_already = 0; |
c906108c | 2949 | |
81d0cc19 | 2950 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 2951 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 2952 | |
81d0cc19 GS |
2953 | /* Explicitly mark the warning -- this will only be printed if |
2954 | there was an error. */ | |
2955 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
2956 | |
2957 | save_current_space_and_thread (); | |
2958 | ||
35df4500 | 2959 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2960 | { |
b775012e | 2961 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2962 | continue; |
2963 | ||
4a64f543 MS |
2964 | /* There is no point inserting thread-specific breakpoints if |
2965 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2966 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
2967 | if (bl->owner->thread != -1 |
2968 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2969 | continue; |
2970 | ||
35df4500 | 2971 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2972 | |
2973 | /* For targets that support global breakpoints, there's no need | |
2974 | to select an inferior to insert breakpoint to. In fact, even | |
2975 | if we aren't attached to any process yet, we should still | |
2976 | insert breakpoints. */ | |
f5656ead | 2977 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
2978 | && ptid_equal (inferior_ptid, null_ptid)) |
2979 | continue; | |
2980 | ||
3fbb6ffa | 2981 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2982 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2983 | if (val) |
eacd795a | 2984 | error_flag = val; |
879bfdc2 | 2985 | } |
c906108c | 2986 | |
4a64f543 MS |
2987 | /* If we failed to insert all locations of a watchpoint, remove |
2988 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2989 | ALL_BREAKPOINTS (bpt) |
2990 | { | |
2991 | int some_failed = 0; | |
2992 | struct bp_location *loc; | |
2993 | ||
2994 | if (!is_hardware_watchpoint (bpt)) | |
2995 | continue; | |
2996 | ||
d6b74ac4 | 2997 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2998 | continue; |
74960c60 VP |
2999 | |
3000 | if (bpt->disposition == disp_del_at_next_stop) | |
3001 | continue; | |
a5606eee VP |
3002 | |
3003 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 3004 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
3005 | { |
3006 | some_failed = 1; | |
3007 | break; | |
3008 | } | |
3009 | if (some_failed) | |
3010 | { | |
3011 | for (loc = bpt->loc; loc; loc = loc->next) | |
3012 | if (loc->inserted) | |
3013 | remove_breakpoint (loc, mark_uninserted); | |
3014 | ||
3015 | hw_breakpoint_error = 1; | |
3016 | fprintf_unfiltered (tmp_error_stream, | |
3017 | "Could not insert hardware watchpoint %d.\n", | |
3018 | bpt->number); | |
eacd795a | 3019 | error_flag = -1; |
a5606eee VP |
3020 | } |
3021 | } | |
3022 | ||
eacd795a | 3023 | if (error_flag) |
81d0cc19 GS |
3024 | { |
3025 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
3026 | message about possibly exhausted resources. */ | |
dd61ec5c | 3027 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 3028 | { |
c6510018 MS |
3029 | fprintf_unfiltered (tmp_error_stream, |
3030 | "Could not insert hardware breakpoints:\n\ | |
3031 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 3032 | } |
81d0cc19 GS |
3033 | target_terminal_ours_for_output (); |
3034 | error_stream (tmp_error_stream); | |
3035 | } | |
f7545552 TT |
3036 | |
3037 | do_cleanups (cleanups); | |
c906108c SS |
3038 | } |
3039 | ||
c30eee59 TJB |
3040 | /* Used when the program stops. |
3041 | Returns zero if successful, or non-zero if there was a problem | |
3042 | removing a breakpoint location. */ | |
3043 | ||
c906108c | 3044 | int |
fba45db2 | 3045 | remove_breakpoints (void) |
c906108c | 3046 | { |
35df4500 | 3047 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3048 | int val = 0; |
c906108c | 3049 | |
35df4500 | 3050 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3051 | { |
1e4d1764 | 3052 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 3053 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 3054 | } |
3a1bae8e | 3055 | return val; |
c906108c SS |
3056 | } |
3057 | ||
49fa26b0 PA |
3058 | /* When a thread exits, remove breakpoints that are related to |
3059 | that thread. */ | |
3060 | ||
3061 | static void | |
3062 | remove_threaded_breakpoints (struct thread_info *tp, int silent) | |
3063 | { | |
3064 | struct breakpoint *b, *b_tmp; | |
3065 | ||
3066 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
3067 | { | |
96181529 | 3068 | if (b->thread == tp->num && user_breakpoint_p (b)) |
49fa26b0 PA |
3069 | { |
3070 | b->disposition = disp_del_at_next_stop; | |
3071 | ||
3072 | printf_filtered (_("\ | |
46ecd527 | 3073 | Thread-specific breakpoint %d deleted - thread %d no longer in the thread list.\n"), |
49fa26b0 PA |
3074 | b->number, tp->num); |
3075 | ||
3076 | /* Hide it from the user. */ | |
3077 | b->number = 0; | |
3078 | } | |
3079 | } | |
3080 | } | |
3081 | ||
6c95b8df PA |
3082 | /* Remove breakpoints of process PID. */ |
3083 | ||
3084 | int | |
3085 | remove_breakpoints_pid (int pid) | |
3086 | { | |
35df4500 | 3087 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
3088 | int val; |
3089 | struct inferior *inf = find_inferior_pid (pid); | |
3090 | ||
35df4500 | 3091 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3092 | { |
35df4500 | 3093 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3094 | continue; |
3095 | ||
d3ce09f5 SS |
3096 | if (bl->owner->type == bp_dprintf) |
3097 | continue; | |
3098 | ||
35df4500 | 3099 | if (bl->inserted) |
6c95b8df | 3100 | { |
35df4500 | 3101 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
3102 | if (val != 0) |
3103 | return val; | |
3104 | } | |
3105 | } | |
3106 | return 0; | |
3107 | } | |
3108 | ||
c906108c | 3109 | int |
fba45db2 | 3110 | reattach_breakpoints (int pid) |
c906108c | 3111 | { |
6c95b8df | 3112 | struct cleanup *old_chain; |
35df4500 | 3113 | struct bp_location *bl, **blp_tmp; |
c906108c | 3114 | int val; |
86b887df | 3115 | struct ui_file *tmp_error_stream; |
dd61ec5c | 3116 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
3117 | struct inferior *inf; |
3118 | struct thread_info *tp; | |
3119 | ||
3120 | tp = any_live_thread_of_process (pid); | |
3121 | if (tp == NULL) | |
3122 | return 1; | |
3123 | ||
3124 | inf = find_inferior_pid (pid); | |
3125 | old_chain = save_inferior_ptid (); | |
3126 | ||
3127 | inferior_ptid = tp->ptid; | |
a4954f26 | 3128 | |
86b887df | 3129 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 3130 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 3131 | |
35df4500 | 3132 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3133 | { |
35df4500 | 3134 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3135 | continue; |
3136 | ||
35df4500 | 3137 | if (bl->inserted) |
c5aa993b | 3138 | { |
35df4500 | 3139 | bl->inserted = 0; |
dd61ec5c | 3140 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b JM |
3141 | if (val != 0) |
3142 | { | |
ce696e05 | 3143 | do_cleanups (old_chain); |
c5aa993b JM |
3144 | return val; |
3145 | } | |
3146 | } | |
3147 | } | |
ce696e05 | 3148 | do_cleanups (old_chain); |
c906108c SS |
3149 | return 0; |
3150 | } | |
3151 | ||
e58b0e63 PA |
3152 | static int internal_breakpoint_number = -1; |
3153 | ||
84f4c1fe PM |
3154 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3155 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3156 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3157 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3158 | breakpoint_count and that value incremented. Internal breakpoints |
3159 | do not set the internal var bpnum. */ | |
3160 | static void | |
3161 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3162 | { | |
3163 | if (internal) | |
3164 | b->number = internal_breakpoint_number--; | |
3165 | else | |
3166 | { | |
3167 | set_breakpoint_count (breakpoint_count + 1); | |
3168 | b->number = breakpoint_count; | |
3169 | } | |
3170 | } | |
3171 | ||
e62c965a | 3172 | static struct breakpoint * |
a6d9a66e | 3173 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3174 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3175 | const struct breakpoint_ops *ops) |
e62c965a | 3176 | { |
e62c965a PP |
3177 | struct symtab_and_line sal; |
3178 | struct breakpoint *b; | |
3179 | ||
4a64f543 | 3180 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3181 | |
3182 | sal.pc = address; | |
3183 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3184 | sal.pspace = current_program_space; |
e62c965a | 3185 | |
06edf0c0 | 3186 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3187 | b->number = internal_breakpoint_number--; |
3188 | b->disposition = disp_donttouch; | |
3189 | ||
3190 | return b; | |
3191 | } | |
3192 | ||
17450429 PP |
3193 | static const char *const longjmp_names[] = |
3194 | { | |
3195 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3196 | }; | |
3197 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3198 | ||
3199 | /* Per-objfile data private to breakpoint.c. */ | |
3200 | struct breakpoint_objfile_data | |
3201 | { | |
3202 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3b7344d5 | 3203 | struct bound_minimal_symbol overlay_msym; |
17450429 PP |
3204 | |
3205 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3b7344d5 | 3206 | struct bound_minimal_symbol longjmp_msym[NUM_LONGJMP_NAMES]; |
17450429 | 3207 | |
28106bc2 SDJ |
3208 | /* True if we have looked for longjmp probes. */ |
3209 | int longjmp_searched; | |
3210 | ||
3211 | /* SystemTap probe points for longjmp (if any). */ | |
3212 | VEC (probe_p) *longjmp_probes; | |
3213 | ||
17450429 | 3214 | /* Minimal symbol for "std::terminate()" (if any). */ |
3b7344d5 | 3215 | struct bound_minimal_symbol terminate_msym; |
17450429 PP |
3216 | |
3217 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3b7344d5 | 3218 | struct bound_minimal_symbol exception_msym; |
28106bc2 SDJ |
3219 | |
3220 | /* True if we have looked for exception probes. */ | |
3221 | int exception_searched; | |
3222 | ||
3223 | /* SystemTap probe points for unwinding (if any). */ | |
3224 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3225 | }; |
3226 | ||
3227 | static const struct objfile_data *breakpoint_objfile_key; | |
3228 | ||
3229 | /* Minimal symbol not found sentinel. */ | |
3230 | static struct minimal_symbol msym_not_found; | |
3231 | ||
3232 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3233 | ||
3234 | static int | |
3235 | msym_not_found_p (const struct minimal_symbol *msym) | |
3236 | { | |
3237 | return msym == &msym_not_found; | |
3238 | } | |
3239 | ||
3240 | /* Return per-objfile data needed by breakpoint.c. | |
3241 | Allocate the data if necessary. */ | |
3242 | ||
3243 | static struct breakpoint_objfile_data * | |
3244 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3245 | { | |
3246 | struct breakpoint_objfile_data *bp_objfile_data; | |
3247 | ||
3248 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
3249 | if (bp_objfile_data == NULL) | |
3250 | { | |
3251 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
3252 | sizeof (*bp_objfile_data)); | |
3253 | ||
3254 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3255 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3256 | } | |
3257 | return bp_objfile_data; | |
3258 | } | |
3259 | ||
28106bc2 SDJ |
3260 | static void |
3261 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3262 | { | |
3263 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
3264 | ||
3265 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3266 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3267 | } | |
3268 | ||
e62c965a | 3269 | static void |
af02033e | 3270 | create_overlay_event_breakpoint (void) |
e62c965a | 3271 | { |
69de3c6a | 3272 | struct objfile *objfile; |
af02033e | 3273 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3274 | |
69de3c6a PP |
3275 | ALL_OBJFILES (objfile) |
3276 | { | |
3277 | struct breakpoint *b; | |
17450429 PP |
3278 | struct breakpoint_objfile_data *bp_objfile_data; |
3279 | CORE_ADDR addr; | |
69de3c6a | 3280 | |
17450429 PP |
3281 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3282 | ||
3b7344d5 | 3283 | if (msym_not_found_p (bp_objfile_data->overlay_msym.minsym)) |
17450429 PP |
3284 | continue; |
3285 | ||
3b7344d5 | 3286 | if (bp_objfile_data->overlay_msym.minsym == NULL) |
17450429 | 3287 | { |
3b7344d5 | 3288 | struct bound_minimal_symbol m; |
17450429 PP |
3289 | |
3290 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3291 | if (m.minsym == NULL) |
17450429 PP |
3292 | { |
3293 | /* Avoid future lookups in this objfile. */ | |
3b7344d5 | 3294 | bp_objfile_data->overlay_msym.minsym = &msym_not_found; |
17450429 PP |
3295 | continue; |
3296 | } | |
3297 | bp_objfile_data->overlay_msym = m; | |
3298 | } | |
e62c965a | 3299 | |
77e371c0 | 3300 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
17450429 | 3301 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3302 | bp_overlay_event, |
3303 | &internal_breakpoint_ops); | |
69de3c6a | 3304 | b->addr_string = xstrdup (func_name); |
e62c965a | 3305 | |
69de3c6a PP |
3306 | if (overlay_debugging == ovly_auto) |
3307 | { | |
3308 | b->enable_state = bp_enabled; | |
3309 | overlay_events_enabled = 1; | |
3310 | } | |
3311 | else | |
3312 | { | |
3313 | b->enable_state = bp_disabled; | |
3314 | overlay_events_enabled = 0; | |
3315 | } | |
e62c965a PP |
3316 | } |
3317 | update_global_location_list (1); | |
3318 | } | |
3319 | ||
0fd8e87f | 3320 | static void |
af02033e | 3321 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3322 | { |
6c95b8df | 3323 | struct program_space *pspace; |
6c95b8df PA |
3324 | struct cleanup *old_chain; |
3325 | ||
3326 | old_chain = save_current_program_space (); | |
0fd8e87f | 3327 | |
6c95b8df | 3328 | ALL_PSPACES (pspace) |
af02033e PP |
3329 | { |
3330 | struct objfile *objfile; | |
3331 | ||
3332 | set_current_program_space (pspace); | |
3333 | ||
3334 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3335 | { |
af02033e PP |
3336 | int i; |
3337 | struct gdbarch *gdbarch; | |
17450429 | 3338 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3339 | |
af02033e | 3340 | gdbarch = get_objfile_arch (objfile); |
0fd8e87f | 3341 | |
17450429 PP |
3342 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3343 | ||
28106bc2 SDJ |
3344 | if (!bp_objfile_data->longjmp_searched) |
3345 | { | |
25f9533e SDJ |
3346 | VEC (probe_p) *ret; |
3347 | ||
3348 | ret = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3349 | if (ret != NULL) | |
3350 | { | |
3351 | /* We are only interested in checking one element. */ | |
3352 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3353 | ||
3354 | if (!can_evaluate_probe_arguments (p)) | |
3355 | { | |
3356 | /* We cannot use the probe interface here, because it does | |
3357 | not know how to evaluate arguments. */ | |
3358 | VEC_free (probe_p, ret); | |
3359 | ret = NULL; | |
3360 | } | |
3361 | } | |
3362 | bp_objfile_data->longjmp_probes = ret; | |
28106bc2 SDJ |
3363 | bp_objfile_data->longjmp_searched = 1; |
3364 | } | |
3365 | ||
3366 | if (bp_objfile_data->longjmp_probes != NULL) | |
3367 | { | |
3368 | int i; | |
3369 | struct probe *probe; | |
3370 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3371 | ||
3372 | for (i = 0; | |
3373 | VEC_iterate (probe_p, | |
3374 | bp_objfile_data->longjmp_probes, | |
3375 | i, probe); | |
3376 | ++i) | |
3377 | { | |
3378 | struct breakpoint *b; | |
3379 | ||
729662a5 TT |
3380 | b = create_internal_breakpoint (gdbarch, |
3381 | get_probe_address (probe, | |
3382 | objfile), | |
28106bc2 SDJ |
3383 | bp_longjmp_master, |
3384 | &internal_breakpoint_ops); | |
3385 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
3386 | b->enable_state = bp_disabled; | |
3387 | } | |
3388 | ||
3389 | continue; | |
3390 | } | |
3391 | ||
0569175e TSD |
3392 | if (!gdbarch_get_longjmp_target_p (gdbarch)) |
3393 | continue; | |
3394 | ||
17450429 | 3395 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3396 | { |
3397 | struct breakpoint *b; | |
af02033e | 3398 | const char *func_name; |
17450429 | 3399 | CORE_ADDR addr; |
6c95b8df | 3400 | |
3b7344d5 | 3401 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i].minsym)) |
af02033e | 3402 | continue; |
0fd8e87f | 3403 | |
17450429 | 3404 | func_name = longjmp_names[i]; |
3b7344d5 | 3405 | if (bp_objfile_data->longjmp_msym[i].minsym == NULL) |
17450429 | 3406 | { |
3b7344d5 | 3407 | struct bound_minimal_symbol m; |
17450429 PP |
3408 | |
3409 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3b7344d5 | 3410 | if (m.minsym == NULL) |
17450429 PP |
3411 | { |
3412 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3413 | bp_objfile_data->longjmp_msym[i].minsym = &msym_not_found; |
17450429 PP |
3414 | continue; |
3415 | } | |
3416 | bp_objfile_data->longjmp_msym[i] = m; | |
3417 | } | |
3418 | ||
77e371c0 | 3419 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); |
06edf0c0 PA |
3420 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3421 | &internal_breakpoint_ops); | |
af02033e PP |
3422 | b->addr_string = xstrdup (func_name); |
3423 | b->enable_state = bp_disabled; | |
3424 | } | |
0fd8e87f | 3425 | } |
af02033e | 3426 | } |
0fd8e87f | 3427 | update_global_location_list (1); |
6c95b8df PA |
3428 | |
3429 | do_cleanups (old_chain); | |
0fd8e87f UW |
3430 | } |
3431 | ||
af02033e | 3432 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3433 | static void |
af02033e | 3434 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3435 | { |
3436 | struct program_space *pspace; | |
aa7d318d | 3437 | struct cleanup *old_chain; |
af02033e | 3438 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3439 | |
3440 | old_chain = save_current_program_space (); | |
3441 | ||
3442 | ALL_PSPACES (pspace) | |
17450429 PP |
3443 | { |
3444 | struct objfile *objfile; | |
3445 | CORE_ADDR addr; | |
3446 | ||
3447 | set_current_program_space (pspace); | |
3448 | ||
aa7d318d TT |
3449 | ALL_OBJFILES (objfile) |
3450 | { | |
3451 | struct breakpoint *b; | |
17450429 | 3452 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 3453 | |
17450429 | 3454 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3455 | |
3b7344d5 | 3456 | if (msym_not_found_p (bp_objfile_data->terminate_msym.minsym)) |
17450429 PP |
3457 | continue; |
3458 | ||
3b7344d5 | 3459 | if (bp_objfile_data->terminate_msym.minsym == NULL) |
17450429 | 3460 | { |
3b7344d5 | 3461 | struct bound_minimal_symbol m; |
17450429 PP |
3462 | |
3463 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3b7344d5 TT |
3464 | if (m.minsym == NULL || (MSYMBOL_TYPE (m.minsym) != mst_text |
3465 | && MSYMBOL_TYPE (m.minsym) != mst_file_text)) | |
17450429 PP |
3466 | { |
3467 | /* Prevent future lookups in this objfile. */ | |
3b7344d5 | 3468 | bp_objfile_data->terminate_msym.minsym = &msym_not_found; |
17450429 PP |
3469 | continue; |
3470 | } | |
3471 | bp_objfile_data->terminate_msym = m; | |
3472 | } | |
aa7d318d | 3473 | |
77e371c0 | 3474 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
17450429 | 3475 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, |
06edf0c0 PA |
3476 | bp_std_terminate_master, |
3477 | &internal_breakpoint_ops); | |
aa7d318d TT |
3478 | b->addr_string = xstrdup (func_name); |
3479 | b->enable_state = bp_disabled; | |
3480 | } | |
17450429 PP |
3481 | } |
3482 | ||
aa7d318d TT |
3483 | update_global_location_list (1); |
3484 | ||
3485 | do_cleanups (old_chain); | |
3486 | } | |
3487 | ||
186c406b TT |
3488 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3489 | ||
70221824 | 3490 | static void |
186c406b TT |
3491 | create_exception_master_breakpoint (void) |
3492 | { | |
3493 | struct objfile *objfile; | |
17450429 | 3494 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3495 | |
3496 | ALL_OBJFILES (objfile) | |
3497 | { | |
17450429 PP |
3498 | struct breakpoint *b; |
3499 | struct gdbarch *gdbarch; | |
3500 | struct breakpoint_objfile_data *bp_objfile_data; | |
3501 | CORE_ADDR addr; | |
3502 | ||
3503 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3504 | ||
28106bc2 SDJ |
3505 | /* We prefer the SystemTap probe point if it exists. */ |
3506 | if (!bp_objfile_data->exception_searched) | |
3507 | { | |
25f9533e SDJ |
3508 | VEC (probe_p) *ret; |
3509 | ||
3510 | ret = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3511 | ||
3512 | if (ret != NULL) | |
3513 | { | |
3514 | /* We are only interested in checking one element. */ | |
3515 | struct probe *p = VEC_index (probe_p, ret, 0); | |
3516 | ||
3517 | if (!can_evaluate_probe_arguments (p)) | |
3518 | { | |
3519 | /* We cannot use the probe interface here, because it does | |
3520 | not know how to evaluate arguments. */ | |
3521 | VEC_free (probe_p, ret); | |
3522 | ret = NULL; | |
3523 | } | |
3524 | } | |
3525 | bp_objfile_data->exception_probes = ret; | |
28106bc2 SDJ |
3526 | bp_objfile_data->exception_searched = 1; |
3527 | } | |
3528 | ||
3529 | if (bp_objfile_data->exception_probes != NULL) | |
3530 | { | |
3531 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3532 | int i; | |
3533 | struct probe *probe; | |
3534 | ||
3535 | for (i = 0; | |
3536 | VEC_iterate (probe_p, | |
3537 | bp_objfile_data->exception_probes, | |
3538 | i, probe); | |
3539 | ++i) | |
3540 | { | |
3541 | struct breakpoint *b; | |
3542 | ||
729662a5 TT |
3543 | b = create_internal_breakpoint (gdbarch, |
3544 | get_probe_address (probe, | |
3545 | objfile), | |
28106bc2 SDJ |
3546 | bp_exception_master, |
3547 | &internal_breakpoint_ops); | |
3548 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3549 | b->enable_state = bp_disabled; | |
3550 | } | |
3551 | ||
3552 | continue; | |
3553 | } | |
3554 | ||
3555 | /* Otherwise, try the hook function. */ | |
3556 | ||
3b7344d5 | 3557 | if (msym_not_found_p (bp_objfile_data->exception_msym.minsym)) |
17450429 PP |
3558 | continue; |
3559 | ||
3560 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3561 | |
3b7344d5 | 3562 | if (bp_objfile_data->exception_msym.minsym == NULL) |
186c406b | 3563 | { |
3b7344d5 | 3564 | struct bound_minimal_symbol debug_hook; |
186c406b | 3565 | |
17450429 | 3566 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3b7344d5 | 3567 | if (debug_hook.minsym == NULL) |
17450429 | 3568 | { |
3b7344d5 | 3569 | bp_objfile_data->exception_msym.minsym = &msym_not_found; |
17450429 PP |
3570 | continue; |
3571 | } | |
3572 | ||
3573 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3574 | } |
17450429 | 3575 | |
77e371c0 | 3576 | addr = BMSYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); |
17450429 PP |
3577 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, |
3578 | ¤t_target); | |
06edf0c0 PA |
3579 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3580 | &internal_breakpoint_ops); | |
17450429 PP |
3581 | b->addr_string = xstrdup (func_name); |
3582 | b->enable_state = bp_disabled; | |
186c406b TT |
3583 | } |
3584 | ||
3585 | update_global_location_list (1); | |
3586 | } | |
3587 | ||
c906108c | 3588 | void |
fba45db2 | 3589 | update_breakpoints_after_exec (void) |
c906108c | 3590 | { |
35df4500 | 3591 | struct breakpoint *b, *b_tmp; |
876fa593 | 3592 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3593 | |
25b22b0a PA |
3594 | /* We're about to delete breakpoints from GDB's lists. If the |
3595 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3596 | writing the breakpoints' "shadow contents" back into memory. The | |
3597 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3598 | do that. Instead, the target is responsible from marking | |
3599 | breakpoints out as soon as it detects an exec. We don't do that | |
3600 | here instead, because there may be other attempts to delete | |
3601 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3602 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3603 | if (bploc->pspace == current_program_space) |
3604 | gdb_assert (!bploc->inserted); | |
c906108c | 3605 | |
35df4500 | 3606 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3607 | { |
6c95b8df PA |
3608 | if (b->pspace != current_program_space) |
3609 | continue; | |
3610 | ||
4a64f543 | 3611 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3612 | if (b->type == bp_shlib_event) |
3613 | { | |
3614 | delete_breakpoint (b); | |
3615 | continue; | |
3616 | } | |
c906108c | 3617 | |
4a64f543 | 3618 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3619 | if (b->type == bp_jit_event) |
3620 | { | |
3621 | delete_breakpoint (b); | |
3622 | continue; | |
3623 | } | |
3624 | ||
1900040c | 3625 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3626 | as must overlay event and longjmp master breakpoints. */ |
3627 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3628 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3629 | || b->type == bp_exception_master) | |
c4093a6a JM |
3630 | { |
3631 | delete_breakpoint (b); | |
3632 | continue; | |
3633 | } | |
3634 | ||
4a64f543 | 3635 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3636 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3637 | { |
3638 | delete_breakpoint (b); | |
3639 | continue; | |
3640 | } | |
3641 | ||
611c83ae PA |
3642 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3643 | after an exec. */ | |
186c406b | 3644 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3645 | || b->type == bp_longjmp_call_dummy |
186c406b | 3646 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3647 | { |
3648 | delete_breakpoint (b); | |
3649 | continue; | |
3650 | } | |
3651 | ||
ce78b96d JB |
3652 | if (b->type == bp_catchpoint) |
3653 | { | |
3654 | /* For now, none of the bp_catchpoint breakpoints need to | |
3655 | do anything at this point. In the future, if some of | |
3656 | the catchpoints need to something, we will need to add | |
3657 | a new method, and call this method from here. */ | |
3658 | continue; | |
3659 | } | |
3660 | ||
c5aa993b JM |
3661 | /* bp_finish is a special case. The only way we ought to be able |
3662 | to see one of these when an exec() has happened, is if the user | |
3663 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3664 | carries them to the call-site of the current callee, by setting | |
3665 | a temporary bp there and resuming. But in this case, the finish | |
3666 | will carry them entirely through the vfork & exec. | |
3667 | ||
3668 | We don't want to allow a bp_finish to remain inserted now. But | |
3669 | we can't safely delete it, 'cause finish_command has a handle to | |
3670 | the bp on a bpstat, and will later want to delete it. There's a | |
3671 | chance (and I've seen it happen) that if we delete the bp_finish | |
3672 | here, that its storage will get reused by the time finish_command | |
3673 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3674 | We really must allow finish_command to delete a bp_finish. | |
3675 | ||
e5dd4106 | 3676 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3677 | it's safe to delete something others may have handles to?" |
3678 | problem, what we'll do here is just uninsert the bp_finish, and | |
3679 | let finish_command delete it. | |
3680 | ||
3681 | (We know the bp_finish is "doomed" in the sense that it's | |
3682 | momentary, and will be deleted as soon as finish_command sees | |
3683 | the inferior stopped. So it doesn't matter that the bp's | |
3684 | address is probably bogus in the new a.out, unlike e.g., the | |
3685 | solib breakpoints.) */ | |
c5aa993b | 3686 | |
c5aa993b JM |
3687 | if (b->type == bp_finish) |
3688 | { | |
3689 | continue; | |
3690 | } | |
3691 | ||
3692 | /* Without a symbolic address, we have little hope of the | |
3693 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3694 | a.out. */ |
c5aa993b JM |
3695 | if (b->addr_string == NULL) |
3696 | { | |
3697 | delete_breakpoint (b); | |
3698 | continue; | |
3699 | } | |
c5aa993b | 3700 | } |
1900040c | 3701 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
3702 | create_overlay_event_breakpoint (); |
3703 | create_longjmp_master_breakpoint (); | |
3704 | create_std_terminate_master_breakpoint (); | |
186c406b | 3705 | create_exception_master_breakpoint (); |
c906108c SS |
3706 | } |
3707 | ||
3708 | int | |
d80ee84f | 3709 | detach_breakpoints (ptid_t ptid) |
c906108c | 3710 | { |
35df4500 | 3711 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3712 | int val = 0; |
ce696e05 | 3713 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3714 | struct inferior *inf = current_inferior (); |
c5aa993b | 3715 | |
dfd4cc63 | 3716 | if (ptid_get_pid (ptid) == ptid_get_pid (inferior_ptid)) |
8a3fe4f8 | 3717 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3718 | |
6c95b8df | 3719 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3720 | inferior_ptid = ptid; |
35df4500 | 3721 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3722 | { |
35df4500 | 3723 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3724 | continue; |
3725 | ||
bd9673a4 PW |
3726 | /* This function must physically remove breakpoints locations |
3727 | from the specified ptid, without modifying the breakpoint | |
3728 | package's state. Locations of type bp_loc_other are only | |
3729 | maintained at GDB side. So, there is no need to remove | |
3730 | these bp_loc_other locations. Moreover, removing these | |
3731 | would modify the breakpoint package's state. */ | |
3732 | if (bl->loc_type == bp_loc_other) | |
3733 | continue; | |
3734 | ||
35df4500 TJB |
3735 | if (bl->inserted) |
3736 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3737 | } |
d03285ec UW |
3738 | |
3739 | /* Detach single-step breakpoints as well. */ | |
3740 | detach_single_step_breakpoints (); | |
3741 | ||
ce696e05 | 3742 | do_cleanups (old_chain); |
3a1bae8e | 3743 | return val; |
c906108c SS |
3744 | } |
3745 | ||
35df4500 | 3746 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3747 | Note that this is used to detach breakpoints from a child fork. |
3748 | When we get here, the child isn't in the inferior list, and neither | |
3749 | do we have objects to represent its address space --- we should | |
35df4500 | 3750 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3751 | |
c906108c | 3752 | static int |
35df4500 | 3753 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3754 | { |
3755 | int val; | |
c5aa993b | 3756 | |
35df4500 TJB |
3757 | /* BL is never in moribund_locations by our callers. */ |
3758 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3759 | |
35df4500 | 3760 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3761 | /* Permanent breakpoints cannot be inserted or removed. */ |
3762 | return 0; | |
3763 | ||
74960c60 VP |
3764 | /* The type of none suggests that owner is actually deleted. |
3765 | This should not ever happen. */ | |
35df4500 | 3766 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3767 | |
35df4500 TJB |
3768 | if (bl->loc_type == bp_loc_software_breakpoint |
3769 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3770 | { |
c02f5703 MS |
3771 | /* "Normal" instruction breakpoint: either the standard |
3772 | trap-instruction bp (bp_breakpoint), or a | |
3773 | bp_hardware_breakpoint. */ | |
3774 | ||
3775 | /* First check to see if we have to handle an overlay. */ | |
3776 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3777 | || bl->section == NULL |
3778 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3779 | { |
3780 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 3781 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 3782 | } |
c906108c SS |
3783 | else |
3784 | { | |
4a64f543 | 3785 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3786 | Did we set a breakpoint at the LMA? */ |
3787 | if (!overlay_events_enabled) | |
3788 | { | |
3789 | /* Yes -- overlay event support is not active, so we | |
3790 | should have set a breakpoint at the LMA. Remove it. | |
3791 | */ | |
c02f5703 MS |
3792 | /* Ignore any failures: if the LMA is in ROM, we will |
3793 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3794 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3795 | target_remove_hw_breakpoint (bl->gdbarch, | |
3796 | &bl->overlay_target_info); | |
c02f5703 | 3797 | else |
35df4500 TJB |
3798 | target_remove_breakpoint (bl->gdbarch, |
3799 | &bl->overlay_target_info); | |
c02f5703 MS |
3800 | } |
3801 | /* Did we set a breakpoint at the VMA? | |
3802 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3803 | if (bl->inserted) |
c906108c | 3804 | { |
c02f5703 MS |
3805 | /* Yes -- remove it. Previously we did not bother to |
3806 | remove the breakpoint if the section had been | |
3807 | unmapped, but let's not rely on that being safe. We | |
3808 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3809 | |
3810 | /* However, we should remove *software* breakpoints only | |
3811 | if the section is still mapped, or else we overwrite | |
3812 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3813 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3814 | || section_is_mapped (bl->section)) | |
3815 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3816 | else |
3817 | val = 0; | |
c906108c | 3818 | } |
c02f5703 MS |
3819 | else |
3820 | { | |
3821 | /* No -- not inserted, so no need to remove. No error. */ | |
3822 | val = 0; | |
3823 | } | |
c906108c | 3824 | } |
879d1e6b UW |
3825 | |
3826 | /* In some cases, we might not be able to remove a breakpoint | |
3827 | in a shared library that has already been removed, but we | |
3828 | have not yet processed the shlib unload event. */ | |
35df4500 | 3829 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
3830 | val = 0; |
3831 | ||
c906108c SS |
3832 | if (val) |
3833 | return val; | |
35df4500 | 3834 | bl->inserted = (is == mark_inserted); |
c906108c | 3835 | } |
35df4500 | 3836 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3837 | { |
77b06cd7 TJB |
3838 | gdb_assert (bl->owner->ops != NULL |
3839 | && bl->owner->ops->remove_location != NULL); | |
3840 | ||
35df4500 | 3841 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 3842 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 3843 | |
c906108c | 3844 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 3845 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 3846 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3847 | bl->owner->number); |
c906108c | 3848 | } |
35df4500 TJB |
3849 | else if (bl->owner->type == bp_catchpoint |
3850 | && breakpoint_enabled (bl->owner) | |
3851 | && !bl->duplicate) | |
ce78b96d | 3852 | { |
77b06cd7 TJB |
3853 | gdb_assert (bl->owner->ops != NULL |
3854 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3855 | |
77b06cd7 | 3856 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
3857 | if (val) |
3858 | return val; | |
77b06cd7 | 3859 | |
35df4500 | 3860 | bl->inserted = (is == mark_inserted); |
ce78b96d | 3861 | } |
c906108c SS |
3862 | |
3863 | return 0; | |
3864 | } | |
3865 | ||
6c95b8df | 3866 | static int |
35df4500 | 3867 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
3868 | { |
3869 | int ret; | |
3870 | struct cleanup *old_chain; | |
3871 | ||
35df4500 TJB |
3872 | /* BL is never in moribund_locations by our callers. */ |
3873 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3874 | |
35df4500 | 3875 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
3876 | /* Permanent breakpoints cannot be inserted or removed. */ |
3877 | return 0; | |
3878 | ||
3879 | /* The type of none suggests that owner is actually deleted. | |
3880 | This should not ever happen. */ | |
35df4500 | 3881 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
3882 | |
3883 | old_chain = save_current_space_and_thread (); | |
3884 | ||
35df4500 | 3885 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3886 | |
35df4500 | 3887 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
3888 | |
3889 | do_cleanups (old_chain); | |
3890 | return ret; | |
3891 | } | |
3892 | ||
c906108c SS |
3893 | /* Clear the "inserted" flag in all breakpoints. */ |
3894 | ||
25b22b0a | 3895 | void |
fba45db2 | 3896 | mark_breakpoints_out (void) |
c906108c | 3897 | { |
35df4500 | 3898 | struct bp_location *bl, **blp_tmp; |
c906108c | 3899 | |
35df4500 TJB |
3900 | ALL_BP_LOCATIONS (bl, blp_tmp) |
3901 | if (bl->pspace == current_program_space) | |
3902 | bl->inserted = 0; | |
c906108c SS |
3903 | } |
3904 | ||
53a5351d JM |
3905 | /* Clear the "inserted" flag in all breakpoints and delete any |
3906 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3907 | |
3908 | Plus other such housekeeping that has to be done for breakpoints | |
3909 | between runs. | |
3910 | ||
53a5351d JM |
3911 | Note: this function gets called at the end of a run (by |
3912 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3913 | init_wait_for_inferior). */ |
c906108c SS |
3914 | |
3915 | ||
3916 | ||
3917 | void | |
fba45db2 | 3918 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3919 | { |
35df4500 TJB |
3920 | struct breakpoint *b, *b_tmp; |
3921 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 3922 | int ix; |
6c95b8df | 3923 | struct program_space *pspace = current_program_space; |
c906108c | 3924 | |
50c71eaf PA |
3925 | /* If breakpoint locations are shared across processes, then there's |
3926 | nothing to do. */ | |
f5656ead | 3927 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3928 | return; |
3929 | ||
35df4500 | 3930 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3931 | { |
35df4500 TJB |
3932 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
3933 | if (bl->pspace == pspace | |
3934 | && bl->owner->enable_state != bp_permanent) | |
3935 | bl->inserted = 0; | |
6c95b8df | 3936 | } |
075f6582 | 3937 | |
35df4500 | 3938 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3939 | { |
6c95b8df PA |
3940 | if (b->loc && b->loc->pspace != pspace) |
3941 | continue; | |
3942 | ||
c5aa993b JM |
3943 | switch (b->type) |
3944 | { | |
3945 | case bp_call_dummy: | |
e2e4d78b | 3946 | case bp_longjmp_call_dummy: |
c906108c | 3947 | |
c5aa993b | 3948 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3949 | cause problems when the inferior is rerun, so we better get |
3950 | rid of it. */ | |
3951 | ||
3952 | case bp_watchpoint_scope: | |
3953 | ||
3954 | /* Also get rid of scope breakpoints. */ | |
3955 | ||
3956 | case bp_shlib_event: | |
3957 | ||
3958 | /* Also remove solib event breakpoints. Their addresses may | |
3959 | have changed since the last time we ran the program. | |
3960 | Actually we may now be debugging against different target; | |
3961 | and so the solib backend that installed this breakpoint may | |
3962 | not be used in by the target. E.g., | |
3963 | ||
3964 | (gdb) file prog-linux | |
3965 | (gdb) run # native linux target | |
3966 | ... | |
3967 | (gdb) kill | |
3968 | (gdb) file prog-win.exe | |
3969 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3970 | */ | |
c906108c | 3971 | |
f59f708a PA |
3972 | case bp_step_resume: |
3973 | ||
3974 | /* Also remove step-resume breakpoints. */ | |
3975 | ||
c5aa993b JM |
3976 | delete_breakpoint (b); |
3977 | break; | |
c906108c | 3978 | |
c5aa993b JM |
3979 | case bp_watchpoint: |
3980 | case bp_hardware_watchpoint: | |
3981 | case bp_read_watchpoint: | |
3982 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3983 | { |
3984 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3985 | |
3a5c3e22 PA |
3986 | /* Likewise for watchpoints on local expressions. */ |
3987 | if (w->exp_valid_block != NULL) | |
3988 | delete_breakpoint (b); | |
3989 | else if (context == inf_starting) | |
3990 | { | |
3991 | /* Reset val field to force reread of starting value in | |
3992 | insert_breakpoints. */ | |
3993 | if (w->val) | |
3994 | value_free (w->val); | |
3995 | w->val = NULL; | |
3996 | w->val_valid = 0; | |
c860120c | 3997 | } |
3a5c3e22 | 3998 | } |
c5aa993b JM |
3999 | break; |
4000 | default: | |
c5aa993b JM |
4001 | break; |
4002 | } | |
4003 | } | |
1c5cfe86 PA |
4004 | |
4005 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
4006 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
4007 | decref_bp_location (&bl); | |
1c5cfe86 | 4008 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
4009 | } |
4010 | ||
6c95b8df PA |
4011 | /* These functions concern about actual breakpoints inserted in the |
4012 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
4013 | we need to hop over the bkpt --- so we check for address space | |
4014 | match, not program space. */ | |
4015 | ||
c2c6d25f JM |
4016 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
4017 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
4018 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
4019 | permanent breakpoint. | |
4020 | - When continuing from a location with an ordinary breakpoint, we | |
4021 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 4022 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
4023 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
4024 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 4025 | |
c2c6d25f | 4026 | enum breakpoint_here |
6c95b8df | 4027 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 4028 | { |
35df4500 | 4029 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 4030 | int any_breakpoint_here = 0; |
c906108c | 4031 | |
35df4500 | 4032 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 4033 | { |
35df4500 TJB |
4034 | if (bl->loc_type != bp_loc_software_breakpoint |
4035 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4036 | continue; |
4037 | ||
f1310107 | 4038 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
4039 | if ((breakpoint_enabled (bl->owner) |
4040 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 4041 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4042 | { |
4043 | if (overlay_debugging | |
35df4500 TJB |
4044 | && section_is_overlay (bl->section) |
4045 | && !section_is_mapped (bl->section)) | |
075f6582 | 4046 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 4047 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
4048 | return permanent_breakpoint_here; |
4049 | else | |
4050 | any_breakpoint_here = 1; | |
4051 | } | |
4052 | } | |
c906108c | 4053 | |
c2c6d25f | 4054 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
4055 | } |
4056 | ||
1c5cfe86 PA |
4057 | /* Return true if there's a moribund breakpoint at PC. */ |
4058 | ||
4059 | int | |
6c95b8df | 4060 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
4061 | { |
4062 | struct bp_location *loc; | |
4063 | int ix; | |
4064 | ||
4065 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 4066 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
4067 | return 1; |
4068 | ||
4069 | return 0; | |
4070 | } | |
c2c6d25f | 4071 | |
c36b740a | 4072 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
4073 | inserted using regular breakpoint_chain / bp_location array |
4074 | mechanism. This does not check for single-step breakpoints, which | |
4075 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
4076 | |
4077 | int | |
4a64f543 MS |
4078 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
4079 | CORE_ADDR pc) | |
c906108c | 4080 | { |
35df4500 | 4081 | struct bp_location *bl, **blp_tmp; |
c906108c | 4082 | |
35df4500 | 4083 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 4084 | { |
35df4500 TJB |
4085 | if (bl->loc_type != bp_loc_software_breakpoint |
4086 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4087 | continue; |
4088 | ||
35df4500 | 4089 | if (bl->inserted |
f1310107 | 4090 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
4091 | { |
4092 | if (overlay_debugging | |
35df4500 TJB |
4093 | && section_is_overlay (bl->section) |
4094 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
4095 | continue; /* unmapped overlay -- can't be a match */ |
4096 | else | |
4097 | return 1; | |
4098 | } | |
c5aa993b | 4099 | } |
c36b740a VP |
4100 | return 0; |
4101 | } | |
4102 | ||
4103 | /* Returns non-zero iff there's either regular breakpoint | |
4104 | or a single step breakpoint inserted at PC. */ | |
4105 | ||
4106 | int | |
6c95b8df | 4107 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 4108 | { |
6c95b8df | 4109 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 4110 | return 1; |
c906108c | 4111 | |
6c95b8df | 4112 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
4113 | return 1; |
4114 | ||
c906108c SS |
4115 | return 0; |
4116 | } | |
4117 | ||
4fa8626c DJ |
4118 | /* This function returns non-zero iff there is a software breakpoint |
4119 | inserted at PC. */ | |
4120 | ||
4121 | int | |
3e43a32a MS |
4122 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
4123 | CORE_ADDR pc) | |
4fa8626c | 4124 | { |
35df4500 | 4125 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 4126 | |
35df4500 | 4127 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 4128 | { |
35df4500 | 4129 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
4130 | continue; |
4131 | ||
35df4500 TJB |
4132 | if (bl->inserted |
4133 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 4134 | aspace, pc)) |
4fa8626c DJ |
4135 | { |
4136 | if (overlay_debugging | |
35df4500 TJB |
4137 | && section_is_overlay (bl->section) |
4138 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
4139 | continue; /* unmapped overlay -- can't be a match */ |
4140 | else | |
4141 | return 1; | |
4142 | } | |
4143 | } | |
4144 | ||
1aafd4da | 4145 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 4146 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
4147 | return 1; |
4148 | ||
4fa8626c DJ |
4149 | return 0; |
4150 | } | |
4151 | ||
9093389c PA |
4152 | int |
4153 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
4154 | CORE_ADDR addr, ULONGEST len) | |
4155 | { | |
4156 | struct breakpoint *bpt; | |
4157 | ||
4158 | ALL_BREAKPOINTS (bpt) | |
4159 | { | |
4160 | struct bp_location *loc; | |
4161 | ||
4162 | if (bpt->type != bp_hardware_watchpoint | |
4163 | && bpt->type != bp_access_watchpoint) | |
4164 | continue; | |
4165 | ||
4166 | if (!breakpoint_enabled (bpt)) | |
4167 | continue; | |
4168 | ||
4169 | for (loc = bpt->loc; loc; loc = loc->next) | |
4170 | if (loc->pspace->aspace == aspace && loc->inserted) | |
4171 | { | |
4172 | CORE_ADDR l, h; | |
4173 | ||
4174 | /* Check for intersection. */ | |
4175 | l = max (loc->address, addr); | |
4176 | h = min (loc->address + loc->length, addr + len); | |
4177 | if (l < h) | |
4178 | return 1; | |
4179 | } | |
4180 | } | |
4181 | return 0; | |
4182 | } | |
4183 | ||
075f6582 DJ |
4184 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
4185 | PC is valid for process/thread PTID. */ | |
c906108c SS |
4186 | |
4187 | int | |
6c95b8df PA |
4188 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
4189 | ptid_t ptid) | |
c906108c | 4190 | { |
35df4500 | 4191 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 4192 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 4193 | int thread = -1; |
4a306c9a | 4194 | int task = 0; |
a6f1cd96 | 4195 | |
35df4500 | 4196 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 4197 | { |
35df4500 TJB |
4198 | if (bl->loc_type != bp_loc_software_breakpoint |
4199 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4200 | continue; |
4201 | ||
35df4500 TJB |
4202 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
4203 | if (!breakpoint_enabled (bl->owner) | |
4204 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
4205 | continue; |
4206 | ||
f1310107 | 4207 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
4208 | continue; |
4209 | ||
35df4500 | 4210 | if (bl->owner->thread != -1) |
075f6582 | 4211 | { |
a6f1cd96 JB |
4212 | /* This is a thread-specific breakpoint. Check that ptid |
4213 | matches that thread. If thread hasn't been computed yet, | |
4214 | it is now time to do so. */ | |
4215 | if (thread == -1) | |
4216 | thread = pid_to_thread_id (ptid); | |
35df4500 | 4217 | if (bl->owner->thread != thread) |
a6f1cd96 | 4218 | continue; |
075f6582 | 4219 | } |
a6f1cd96 | 4220 | |
35df4500 | 4221 | if (bl->owner->task != 0) |
4a306c9a JB |
4222 | { |
4223 | /* This is a task-specific breakpoint. Check that ptid | |
4224 | matches that task. If task hasn't been computed yet, | |
4225 | it is now time to do so. */ | |
4226 | if (task == 0) | |
4227 | task = ada_get_task_number (ptid); | |
35df4500 | 4228 | if (bl->owner->task != task) |
4a306c9a JB |
4229 | continue; |
4230 | } | |
4231 | ||
a6f1cd96 | 4232 | if (overlay_debugging |
35df4500 TJB |
4233 | && section_is_overlay (bl->section) |
4234 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
4235 | continue; /* unmapped overlay -- can't be a match */ |
4236 | ||
4237 | return 1; | |
c5aa993b | 4238 | } |
c906108c SS |
4239 | |
4240 | return 0; | |
4241 | } | |
c906108c | 4242 | \f |
c5aa993b | 4243 | |
c906108c SS |
4244 | /* bpstat stuff. External routines' interfaces are documented |
4245 | in breakpoint.h. */ | |
4246 | ||
4247 | int | |
c326b90e | 4248 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4249 | { |
533be4dd | 4250 | return (ep->type == bp_catchpoint); |
c906108c SS |
4251 | } |
4252 | ||
f431efe5 PA |
4253 | /* Frees any storage that is part of a bpstat. Does not walk the |
4254 | 'next' chain. */ | |
4255 | ||
4256 | static void | |
198757a8 VP |
4257 | bpstat_free (bpstat bs) |
4258 | { | |
4259 | if (bs->old_val != NULL) | |
4260 | value_free (bs->old_val); | |
9add0f1b | 4261 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4262 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4263 | xfree (bs); |
4264 | } | |
4265 | ||
c906108c SS |
4266 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4267 | Also free any storage that is part of a bpstat. */ | |
4268 | ||
4269 | void | |
fba45db2 | 4270 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4271 | { |
4272 | bpstat p; | |
4273 | bpstat q; | |
4274 | ||
4275 | if (bsp == 0) | |
4276 | return; | |
4277 | p = *bsp; | |
4278 | while (p != NULL) | |
4279 | { | |
4280 | q = p->next; | |
198757a8 | 4281 | bpstat_free (p); |
c906108c SS |
4282 | p = q; |
4283 | } | |
4284 | *bsp = NULL; | |
4285 | } | |
4286 | ||
4287 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4288 | is part of the bpstat is copied as well. */ | |
4289 | ||
4290 | bpstat | |
fba45db2 | 4291 | bpstat_copy (bpstat bs) |
c906108c SS |
4292 | { |
4293 | bpstat p = NULL; | |
4294 | bpstat tmp; | |
4295 | bpstat retval = NULL; | |
4296 | ||
4297 | if (bs == NULL) | |
4298 | return bs; | |
4299 | ||
4300 | for (; bs != NULL; bs = bs->next) | |
4301 | { | |
4302 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4303 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4304 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4305 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4306 | if (bs->old_val != NULL) |
3c3185ac JK |
4307 | { |
4308 | tmp->old_val = value_copy (bs->old_val); | |
4309 | release_value (tmp->old_val); | |
4310 | } | |
31cc81e9 | 4311 | |
c906108c SS |
4312 | if (p == NULL) |
4313 | /* This is the first thing in the chain. */ | |
4314 | retval = tmp; | |
4315 | else | |
4316 | p->next = tmp; | |
4317 | p = tmp; | |
4318 | } | |
4319 | p->next = NULL; | |
4320 | return retval; | |
4321 | } | |
4322 | ||
4a64f543 | 4323 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4324 | |
4325 | bpstat | |
fba45db2 | 4326 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4327 | { |
c5aa993b JM |
4328 | if (bsp == NULL) |
4329 | return NULL; | |
c906108c | 4330 | |
c5aa993b JM |
4331 | for (; bsp != NULL; bsp = bsp->next) |
4332 | { | |
f431efe5 | 4333 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4334 | return bsp; |
4335 | } | |
c906108c SS |
4336 | return NULL; |
4337 | } | |
4338 | ||
ab04a2af TT |
4339 | /* See breakpoint.h. */ |
4340 | ||
47591c29 | 4341 | int |
427cd150 | 4342 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af | 4343 | { |
ab04a2af TT |
4344 | for (; bsp != NULL; bsp = bsp->next) |
4345 | { | |
427cd150 TT |
4346 | if (bsp->breakpoint_at == NULL) |
4347 | { | |
4348 | /* A moribund location can never explain a signal other than | |
4349 | GDB_SIGNAL_TRAP. */ | |
4350 | if (sig == GDB_SIGNAL_TRAP) | |
47591c29 | 4351 | return 1; |
427cd150 TT |
4352 | } |
4353 | else | |
47591c29 PA |
4354 | { |
4355 | if (bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4356 | sig)) | |
4357 | return 1; | |
4358 | } | |
ab04a2af TT |
4359 | } |
4360 | ||
47591c29 | 4361 | return 0; |
ab04a2af TT |
4362 | } |
4363 | ||
4a64f543 MS |
4364 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4365 | stopped at. *BSP upon return is a bpstat which points to the | |
4366 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4367 | good for anything but further calls to bpstat_num). | |
4368 | ||
8671a17b PA |
4369 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4370 | Return -1 if stopped at a breakpoint that has been deleted since | |
4371 | we set it. | |
4372 | Return 1 otherwise. */ | |
c906108c SS |
4373 | |
4374 | int | |
8671a17b | 4375 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4376 | { |
4377 | struct breakpoint *b; | |
4378 | ||
4379 | if ((*bsp) == NULL) | |
4380 | return 0; /* No more breakpoint values */ | |
8671a17b | 4381 | |
4a64f543 MS |
4382 | /* We assume we'll never have several bpstats that correspond to a |
4383 | single breakpoint -- otherwise, this function might return the | |
4384 | same number more than once and this will look ugly. */ | |
f431efe5 | 4385 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4386 | *bsp = (*bsp)->next; |
4387 | if (b == NULL) | |
4388 | return -1; /* breakpoint that's been deleted since */ | |
4389 | ||
4390 | *num = b->number; /* We have its number */ | |
4391 | return 1; | |
c906108c SS |
4392 | } |
4393 | ||
e93ca019 | 4394 | /* See breakpoint.h. */ |
c906108c SS |
4395 | |
4396 | void | |
e93ca019 | 4397 | bpstat_clear_actions (void) |
c906108c | 4398 | { |
e93ca019 JK |
4399 | struct thread_info *tp; |
4400 | bpstat bs; | |
4401 | ||
4402 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4403 | return; | |
4404 | ||
4405 | tp = find_thread_ptid (inferior_ptid); | |
4406 | if (tp == NULL) | |
4407 | return; | |
4408 | ||
4409 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4410 | { |
9add0f1b | 4411 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4412 | |
c906108c SS |
4413 | if (bs->old_val != NULL) |
4414 | { | |
4415 | value_free (bs->old_val); | |
4416 | bs->old_val = NULL; | |
4417 | } | |
4418 | } | |
4419 | } | |
4420 | ||
f3b1572e PA |
4421 | /* Called when a command is about to proceed the inferior. */ |
4422 | ||
4423 | static void | |
4424 | breakpoint_about_to_proceed (void) | |
4425 | { | |
4426 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4427 | { | |
4428 | struct thread_info *tp = inferior_thread (); | |
4429 | ||
4430 | /* Allow inferior function calls in breakpoint commands to not | |
4431 | interrupt the command list. When the call finishes | |
4432 | successfully, the inferior will be standing at the same | |
4433 | breakpoint as if nothing happened. */ | |
16c381f0 | 4434 | if (tp->control.in_infcall) |
f3b1572e PA |
4435 | return; |
4436 | } | |
4437 | ||
4438 | breakpoint_proceeded = 1; | |
4439 | } | |
4440 | ||
4a64f543 MS |
4441 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4442 | command. */ | |
c906108c | 4443 | static void |
4efb68b1 | 4444 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4445 | { |
4446 | executing_breakpoint_commands = 0; | |
4447 | } | |
4448 | ||
abf85f46 JK |
4449 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4450 | or its equivalent. */ | |
4451 | ||
4452 | static int | |
4453 | command_line_is_silent (struct command_line *cmd) | |
4454 | { | |
4455 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
4456 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
4457 | } | |
4458 | ||
4a64f543 MS |
4459 | /* Execute all the commands associated with all the breakpoints at |
4460 | this location. Any of these commands could cause the process to | |
4461 | proceed beyond this point, etc. We look out for such changes by | |
4462 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4463 | |
347bddb7 PA |
4464 | Returns true if a breakpoint command resumed the inferior. In that |
4465 | case, it is the caller's responsibility to recall it again with the | |
4466 | bpstat of the current thread. */ | |
4467 | ||
4468 | static int | |
4469 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4470 | { |
4471 | bpstat bs; | |
4472 | struct cleanup *old_chain; | |
347bddb7 | 4473 | int again = 0; |
c906108c SS |
4474 | |
4475 | /* Avoid endless recursion if a `source' command is contained | |
4476 | in bs->commands. */ | |
4477 | if (executing_breakpoint_commands) | |
347bddb7 | 4478 | return 0; |
c906108c SS |
4479 | |
4480 | executing_breakpoint_commands = 1; | |
4481 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4482 | ||
cf6c5ffb TT |
4483 | prevent_dont_repeat (); |
4484 | ||
4a64f543 | 4485 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4486 | bs = *bsp; |
4487 | ||
4488 | breakpoint_proceeded = 0; | |
4489 | for (; bs != NULL; bs = bs->next) | |
4490 | { | |
9add0f1b | 4491 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4492 | struct command_line *cmd; |
4493 | struct cleanup *this_cmd_tree_chain; | |
4494 | ||
4495 | /* Take ownership of the BSP's command tree, if it has one. | |
4496 | ||
4497 | The command tree could legitimately contain commands like | |
4498 | 'step' and 'next', which call clear_proceed_status, which | |
4499 | frees stop_bpstat's command tree. To make sure this doesn't | |
4500 | free the tree we're executing out from under us, we need to | |
4501 | take ownership of the tree ourselves. Since a given bpstat's | |
4502 | commands are only executed once, we don't need to copy it; we | |
4503 | can clear the pointer in the bpstat, and make sure we free | |
4504 | the tree when we're done. */ | |
9add0f1b TT |
4505 | ccmd = bs->commands; |
4506 | bs->commands = NULL; | |
abf85f46 JK |
4507 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4508 | cmd = ccmd ? ccmd->commands : NULL; | |
4509 | if (command_line_is_silent (cmd)) | |
4510 | { | |
4511 | /* The action has been already done by bpstat_stop_status. */ | |
4512 | cmd = cmd->next; | |
4513 | } | |
6c50ab1c | 4514 | |
c906108c SS |
4515 | while (cmd != NULL) |
4516 | { | |
4517 | execute_control_command (cmd); | |
4518 | ||
4519 | if (breakpoint_proceeded) | |
4520 | break; | |
4521 | else | |
4522 | cmd = cmd->next; | |
4523 | } | |
6c50ab1c JB |
4524 | |
4525 | /* We can free this command tree now. */ | |
4526 | do_cleanups (this_cmd_tree_chain); | |
4527 | ||
c906108c | 4528 | if (breakpoint_proceeded) |
32c1e744 VP |
4529 | { |
4530 | if (target_can_async_p ()) | |
347bddb7 PA |
4531 | /* If we are in async mode, then the target might be still |
4532 | running, not stopped at any breakpoint, so nothing for | |
4533 | us to do here -- just return to the event loop. */ | |
4534 | ; | |
32c1e744 VP |
4535 | else |
4536 | /* In sync mode, when execute_control_command returns | |
4537 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4538 | Breakpoint commands for that stop were not run, since |
4539 | execute_command does not run breakpoint commands -- | |
4540 | only command_line_handler does, but that one is not | |
4541 | involved in execution of breakpoint commands. So, we | |
4542 | can now execute breakpoint commands. It should be | |
4543 | noted that making execute_command do bpstat actions is | |
4544 | not an option -- in this case we'll have recursive | |
4545 | invocation of bpstat for each breakpoint with a | |
4546 | command, and can easily blow up GDB stack. Instead, we | |
4547 | return true, which will trigger the caller to recall us | |
4548 | with the new stop_bpstat. */ | |
4549 | again = 1; | |
4550 | break; | |
32c1e744 | 4551 | } |
c906108c | 4552 | } |
c2b8ed2c | 4553 | do_cleanups (old_chain); |
347bddb7 PA |
4554 | return again; |
4555 | } | |
4556 | ||
4557 | void | |
4558 | bpstat_do_actions (void) | |
4559 | { | |
353d1d73 JK |
4560 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4561 | ||
347bddb7 PA |
4562 | /* Do any commands attached to breakpoint we are stopped at. */ |
4563 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4564 | && target_has_execution | |
4565 | && !is_exited (inferior_ptid) | |
4566 | && !is_executing (inferior_ptid)) | |
4567 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4568 | and only return when it is stopped at the next breakpoint, we | |
4569 | keep doing breakpoint actions until it returns false to | |
4570 | indicate the inferior was not resumed. */ | |
16c381f0 | 4571 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4572 | break; |
353d1d73 JK |
4573 | |
4574 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4575 | } |
4576 | ||
fa4727a6 DJ |
4577 | /* Print out the (old or new) value associated with a watchpoint. */ |
4578 | ||
4579 | static void | |
4580 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4581 | { | |
4582 | if (val == NULL) | |
4583 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4584 | else | |
79a45b7d TT |
4585 | { |
4586 | struct value_print_options opts; | |
4587 | get_user_print_options (&opts); | |
4588 | value_print (val, stream, &opts); | |
4589 | } | |
fa4727a6 DJ |
4590 | } |
4591 | ||
e514a9d6 | 4592 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4593 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4594 | 'print_it' in the bpstat structure. Under some circumstances we |
4595 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4596 | normal_stop(). */ |
e514a9d6 JM |
4597 | |
4598 | static enum print_stop_action | |
4599 | print_bp_stop_message (bpstat bs) | |
4600 | { | |
4601 | switch (bs->print_it) | |
4602 | { | |
4603 | case print_it_noop: | |
4a64f543 | 4604 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4605 | return PRINT_UNKNOWN; |
4606 | break; | |
4607 | ||
4608 | case print_it_done: | |
4609 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4610 | relevant messages. */ |
e514a9d6 JM |
4611 | return PRINT_SRC_AND_LOC; |
4612 | break; | |
4613 | ||
4614 | case print_it_normal: | |
4f8d1dc6 | 4615 | { |
f431efe5 PA |
4616 | struct breakpoint *b = bs->breakpoint_at; |
4617 | ||
1a6a67de TJB |
4618 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4619 | which has since been deleted. */ | |
4620 | if (b == NULL) | |
4621 | return PRINT_UNKNOWN; | |
4622 | ||
348d480f PA |
4623 | /* Normal case. Call the breakpoint's print_it method. */ |
4624 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4625 | } |
348d480f | 4626 | break; |
3086aeae | 4627 | |
e514a9d6 | 4628 | default: |
8e65ff28 | 4629 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4630 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4631 | break; |
c906108c | 4632 | } |
c906108c SS |
4633 | } |
4634 | ||
edcc5120 TT |
4635 | /* A helper function that prints a shared library stopped event. */ |
4636 | ||
4637 | static void | |
4638 | print_solib_event (int is_catchpoint) | |
4639 | { | |
4640 | int any_deleted | |
4641 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4642 | int any_added | |
4643 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4644 | ||
4645 | if (!is_catchpoint) | |
4646 | { | |
4647 | if (any_added || any_deleted) | |
4648 | ui_out_text (current_uiout, | |
4649 | _("Stopped due to shared library event:\n")); | |
4650 | else | |
4651 | ui_out_text (current_uiout, | |
4652 | _("Stopped due to shared library event (no " | |
4653 | "libraries added or removed)\n")); | |
4654 | } | |
4655 | ||
4656 | if (ui_out_is_mi_like_p (current_uiout)) | |
4657 | ui_out_field_string (current_uiout, "reason", | |
4658 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4659 | ||
4660 | if (any_deleted) | |
4661 | { | |
4662 | struct cleanup *cleanup; | |
4663 | char *name; | |
4664 | int ix; | |
4665 | ||
4666 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4667 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4668 | "removed"); | |
4669 | for (ix = 0; | |
4670 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4671 | ix, name); | |
4672 | ++ix) | |
4673 | { | |
4674 | if (ix > 0) | |
4675 | ui_out_text (current_uiout, " "); | |
4676 | ui_out_field_string (current_uiout, "library", name); | |
4677 | ui_out_text (current_uiout, "\n"); | |
4678 | } | |
4679 | ||
4680 | do_cleanups (cleanup); | |
4681 | } | |
4682 | ||
4683 | if (any_added) | |
4684 | { | |
4685 | struct so_list *iter; | |
4686 | int ix; | |
4687 | struct cleanup *cleanup; | |
4688 | ||
4689 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4690 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4691 | "added"); | |
4692 | for (ix = 0; | |
4693 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4694 | ix, iter); | |
4695 | ++ix) | |
4696 | { | |
4697 | if (ix > 0) | |
4698 | ui_out_text (current_uiout, " "); | |
4699 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4700 | ui_out_text (current_uiout, "\n"); | |
4701 | } | |
4702 | ||
4703 | do_cleanups (cleanup); | |
4704 | } | |
4705 | } | |
4706 | ||
e514a9d6 JM |
4707 | /* Print a message indicating what happened. This is called from |
4708 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4709 | list - a list of the eventpoints that caused this stop. KIND is |
4710 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4711 | routine calls the generic print routine for printing a message |
4712 | about reasons for stopping. This will print (for example) the | |
4713 | "Breakpoint n," part of the output. The return value of this | |
4714 | routine is one of: | |
c906108c | 4715 | |
4a64f543 | 4716 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4717 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4718 | code to print the location. An example is |
c5aa993b JM |
4719 | "Breakpoint 1, " which should be followed by |
4720 | the location. | |
917317f4 | 4721 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4722 | to also print the location part of the message. |
4723 | An example is the catch/throw messages, which | |
4a64f543 | 4724 | don't require a location appended to the end. |
917317f4 | 4725 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4726 | further info to be printed. */ |
c906108c | 4727 | |
917317f4 | 4728 | enum print_stop_action |
36dfb11c | 4729 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4730 | { |
4731 | int val; | |
c5aa993b | 4732 | |
c906108c | 4733 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4734 | (Currently all watchpoints go on the bpstat whether hit or not. |
4735 | That probably could (should) be changed, provided care is taken | |
c906108c | 4736 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4737 | for (; bs; bs = bs->next) |
4738 | { | |
4739 | val = print_bp_stop_message (bs); | |
4740 | if (val == PRINT_SRC_ONLY | |
4741 | || val == PRINT_SRC_AND_LOC | |
4742 | || val == PRINT_NOTHING) | |
4743 | return val; | |
4744 | } | |
c906108c | 4745 | |
36dfb11c TT |
4746 | /* If we had hit a shared library event breakpoint, |
4747 | print_bp_stop_message would print out this message. If we hit an | |
4748 | OS-level shared library event, do the same thing. */ | |
4749 | if (kind == TARGET_WAITKIND_LOADED) | |
4750 | { | |
edcc5120 | 4751 | print_solib_event (0); |
36dfb11c TT |
4752 | return PRINT_NOTHING; |
4753 | } | |
4754 | ||
e514a9d6 | 4755 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4756 | with and nothing was printed. */ |
917317f4 | 4757 | return PRINT_UNKNOWN; |
c906108c SS |
4758 | } |
4759 | ||
c42bd95a DE |
4760 | /* Evaluate the expression EXP and return 1 if value is zero. |
4761 | This returns the inverse of the condition because it is called | |
4762 | from catch_errors which returns 0 if an exception happened, and if an | |
4763 | exception happens we want execution to stop. | |
4a64f543 | 4764 | The argument is a "struct expression *" that has been cast to a |
c42bd95a | 4765 | "void *" to make it pass through catch_errors. */ |
c906108c SS |
4766 | |
4767 | static int | |
4efb68b1 | 4768 | breakpoint_cond_eval (void *exp) |
c906108c | 4769 | { |
278cd55f | 4770 | struct value *mark = value_mark (); |
c5aa993b | 4771 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4772 | |
c906108c SS |
4773 | value_free_to_mark (mark); |
4774 | return i; | |
4775 | } | |
4776 | ||
5760d0ab | 4777 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4778 | |
4779 | static bpstat | |
5760d0ab | 4780 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4781 | { |
4782 | bpstat bs; | |
4783 | ||
4784 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4785 | bs->next = NULL; |
4786 | **bs_link_pointer = bs; | |
4787 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4788 | bs->breakpoint_at = bl->owner; |
4789 | bs->bp_location_at = bl; | |
4790 | incref_bp_location (bl); | |
c906108c SS |
4791 | /* If the condition is false, etc., don't do the commands. */ |
4792 | bs->commands = NULL; | |
4793 | bs->old_val = NULL; | |
4794 | bs->print_it = print_it_normal; | |
4795 | return bs; | |
4796 | } | |
4797 | \f | |
d983da9c DJ |
4798 | /* The target has stopped with waitstatus WS. Check if any hardware |
4799 | watchpoints have triggered, according to the target. */ | |
4800 | ||
4801 | int | |
4802 | watchpoints_triggered (struct target_waitstatus *ws) | |
4803 | { | |
d92524f1 | 4804 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4805 | CORE_ADDR addr; |
4806 | struct breakpoint *b; | |
4807 | ||
4808 | if (!stopped_by_watchpoint) | |
4809 | { | |
4810 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4811 | as not triggered. */ | |
4812 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4813 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4814 | { |
4815 | struct watchpoint *w = (struct watchpoint *) b; | |
4816 | ||
4817 | w->watchpoint_triggered = watch_triggered_no; | |
4818 | } | |
d983da9c DJ |
4819 | |
4820 | return 0; | |
4821 | } | |
4822 | ||
4823 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4824 | { | |
4825 | /* We were stopped by a watchpoint, but we don't know where. | |
4826 | Mark all watchpoints as unknown. */ | |
4827 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4828 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4829 | { |
4830 | struct watchpoint *w = (struct watchpoint *) b; | |
4831 | ||
4832 | w->watchpoint_triggered = watch_triggered_unknown; | |
4833 | } | |
d983da9c | 4834 | |
3c4797ba | 4835 | return 1; |
d983da9c DJ |
4836 | } |
4837 | ||
4838 | /* The target could report the data address. Mark watchpoints | |
4839 | affected by this data address as triggered, and all others as not | |
4840 | triggered. */ | |
4841 | ||
4842 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4843 | if (is_hardware_watchpoint (b)) |
d983da9c | 4844 | { |
3a5c3e22 | 4845 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4846 | struct bp_location *loc; |
d983da9c | 4847 | |
3a5c3e22 | 4848 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4849 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4850 | { |
3a5c3e22 | 4851 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4852 | { |
3a5c3e22 PA |
4853 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4854 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4855 | |
4856 | if (newaddr == start) | |
4857 | { | |
3a5c3e22 | 4858 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4859 | break; |
4860 | } | |
4861 | } | |
4862 | /* Exact match not required. Within range is sufficient. */ | |
4863 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4864 | addr, loc->address, | |
4865 | loc->length)) | |
4866 | { | |
3a5c3e22 | 4867 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4868 | break; |
4869 | } | |
4870 | } | |
d983da9c DJ |
4871 | } |
4872 | ||
4873 | return 1; | |
4874 | } | |
4875 | ||
c906108c SS |
4876 | /* Possible return values for watchpoint_check (this can't be an enum |
4877 | because of check_errors). */ | |
4878 | /* The watchpoint has been deleted. */ | |
4879 | #define WP_DELETED 1 | |
4880 | /* The value has changed. */ | |
4881 | #define WP_VALUE_CHANGED 2 | |
4882 | /* The value has not changed. */ | |
4883 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4884 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4885 | #define WP_IGNORE 4 | |
c906108c SS |
4886 | |
4887 | #define BP_TEMPFLAG 1 | |
4888 | #define BP_HARDWAREFLAG 2 | |
4889 | ||
4a64f543 MS |
4890 | /* Evaluate watchpoint condition expression and check if its value |
4891 | changed. | |
553e4c11 JB |
4892 | |
4893 | P should be a pointer to struct bpstat, but is defined as a void * | |
4894 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4895 | |
4896 | static int | |
4efb68b1 | 4897 | watchpoint_check (void *p) |
c906108c SS |
4898 | { |
4899 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4900 | struct watchpoint *b; |
c906108c SS |
4901 | struct frame_info *fr; |
4902 | int within_current_scope; | |
4903 | ||
f431efe5 | 4904 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4905 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4906 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4907 | |
f6bc2008 PA |
4908 | /* If this is a local watchpoint, we only want to check if the |
4909 | watchpoint frame is in scope if the current thread is the thread | |
4910 | that was used to create the watchpoint. */ | |
4911 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4912 | return WP_IGNORE; |
f6bc2008 | 4913 | |
c906108c SS |
4914 | if (b->exp_valid_block == NULL) |
4915 | within_current_scope = 1; | |
4916 | else | |
4917 | { | |
edb3359d DJ |
4918 | struct frame_info *frame = get_current_frame (); |
4919 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4920 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4921 | ||
4a64f543 MS |
4922 | /* in_function_epilogue_p() returns a non-zero value if we're |
4923 | still in the function but the stack frame has already been | |
4924 | invalidated. Since we can't rely on the values of local | |
4925 | variables after the stack has been destroyed, we are treating | |
4926 | the watchpoint in that state as `not changed' without further | |
4927 | checking. Don't mark watchpoints as changed if the current | |
4928 | frame is in an epilogue - even if they are in some other | |
4929 | frame, our view of the stack is likely to be wrong and | |
4930 | frame_find_by_id could error out. */ | |
a0f49112 | 4931 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 4932 | return WP_IGNORE; |
a0f49112 | 4933 | |
101dcfbe | 4934 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4935 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4936 | |
4937 | /* If we've gotten confused in the unwinder, we might have | |
4938 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4939 | if (within_current_scope) |
4940 | { | |
4941 | struct symbol *function; | |
4942 | ||
4943 | function = get_frame_function (fr); | |
4944 | if (function == NULL | |
4945 | || !contained_in (b->exp_valid_block, | |
4946 | SYMBOL_BLOCK_VALUE (function))) | |
4947 | within_current_scope = 0; | |
4948 | } | |
69fbadd5 | 4949 | |
edb3359d | 4950 | if (within_current_scope) |
c906108c SS |
4951 | /* If we end up stopping, the current frame will get selected |
4952 | in normal_stop. So this call to select_frame won't affect | |
4953 | the user. */ | |
0f7d239c | 4954 | select_frame (fr); |
c906108c | 4955 | } |
c5aa993b | 4956 | |
c906108c SS |
4957 | if (within_current_scope) |
4958 | { | |
4a64f543 MS |
4959 | /* We use value_{,free_to_}mark because it could be a *long* |
4960 | time before we return to the command level and call | |
4961 | free_all_values. We can't call free_all_values because we | |
4962 | might be in the middle of evaluating a function call. */ | |
c906108c | 4963 | |
0cf6dd15 | 4964 | int pc = 0; |
9c06b0b4 | 4965 | struct value *mark; |
fa4727a6 DJ |
4966 | struct value *new_val; |
4967 | ||
3a5c3e22 | 4968 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
4969 | /* Since we don't know the exact trigger address (from |
4970 | stopped_data_address), just tell the user we've triggered | |
4971 | a mask watchpoint. */ | |
4972 | return WP_VALUE_CHANGED; | |
4973 | ||
4974 | mark = value_mark (); | |
3a1115a0 | 4975 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL, 0); |
218d2fc6 | 4976 | |
4a64f543 MS |
4977 | /* We use value_equal_contents instead of value_equal because |
4978 | the latter coerces an array to a pointer, thus comparing just | |
4979 | the address of the array instead of its contents. This is | |
4980 | not what we want. */ | |
fa4727a6 | 4981 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4982 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4983 | { |
fa4727a6 DJ |
4984 | if (new_val != NULL) |
4985 | { | |
4986 | release_value (new_val); | |
4987 | value_free_to_mark (mark); | |
4988 | } | |
c906108c SS |
4989 | bs->old_val = b->val; |
4990 | b->val = new_val; | |
fa4727a6 | 4991 | b->val_valid = 1; |
c906108c SS |
4992 | return WP_VALUE_CHANGED; |
4993 | } | |
4994 | else | |
4995 | { | |
60e1c644 | 4996 | /* Nothing changed. */ |
c906108c | 4997 | value_free_to_mark (mark); |
c906108c SS |
4998 | return WP_VALUE_NOT_CHANGED; |
4999 | } | |
5000 | } | |
5001 | else | |
5002 | { | |
79a45e25 PA |
5003 | struct ui_out *uiout = current_uiout; |
5004 | ||
c906108c | 5005 | /* This seems like the only logical thing to do because |
c5aa993b JM |
5006 | if we temporarily ignored the watchpoint, then when |
5007 | we reenter the block in which it is valid it contains | |
5008 | garbage (in the case of a function, it may have two | |
5009 | garbage values, one before and one after the prologue). | |
5010 | So we can't even detect the first assignment to it and | |
5011 | watch after that (since the garbage may or may not equal | |
5012 | the first value assigned). */ | |
348d480f PA |
5013 | /* We print all the stop information in |
5014 | breakpoint_ops->print_it, but in this case, by the time we | |
5015 | call breakpoint_ops->print_it this bp will be deleted | |
5016 | already. So we have no choice but print the information | |
5017 | here. */ | |
9dc5e2a9 | 5018 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
5019 | ui_out_field_string |
5020 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 5021 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 5022 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
5023 | ui_out_text (uiout, |
5024 | " deleted because the program has left the block in\n\ | |
8b93c638 | 5025 | which its expression is valid.\n"); |
4ce44c66 | 5026 | |
cdac0397 | 5027 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 5028 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 5029 | watchpoint_del_at_next_stop (b); |
c906108c SS |
5030 | |
5031 | return WP_DELETED; | |
5032 | } | |
5033 | } | |
5034 | ||
18a18393 | 5035 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
5036 | breakpoint location BL. This function does not check if we should |
5037 | stop, only if BL explains the stop. */ | |
5038 | ||
18a18393 | 5039 | static int |
6c95b8df | 5040 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
5041 | struct address_space *aspace, CORE_ADDR bp_addr, |
5042 | const struct target_waitstatus *ws) | |
18a18393 VP |
5043 | { |
5044 | struct breakpoint *b = bl->owner; | |
5045 | ||
348d480f | 5046 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
5047 | gdb_assert (b != NULL); |
5048 | ||
09ac7c10 | 5049 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
5050 | } |
5051 | ||
3a5c3e22 PA |
5052 | /* Determine if the watched values have actually changed, and we |
5053 | should stop. If not, set BS->stop to 0. */ | |
5054 | ||
18a18393 VP |
5055 | static void |
5056 | bpstat_check_watchpoint (bpstat bs) | |
5057 | { | |
2bdf28a0 | 5058 | const struct bp_location *bl; |
3a5c3e22 | 5059 | struct watchpoint *b; |
2bdf28a0 JK |
5060 | |
5061 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5062 | bl = bs->bp_location_at; |
2bdf28a0 | 5063 | gdb_assert (bl != NULL); |
3a5c3e22 | 5064 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 5065 | gdb_assert (b != NULL); |
18a18393 | 5066 | |
18a18393 | 5067 | { |
18a18393 VP |
5068 | int must_check_value = 0; |
5069 | ||
3a5c3e22 | 5070 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
5071 | /* For a software watchpoint, we must always check the |
5072 | watched value. */ | |
5073 | must_check_value = 1; | |
5074 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
5075 | /* We have a hardware watchpoint (read, write, or access) | |
5076 | and the target earlier reported an address watched by | |
5077 | this watchpoint. */ | |
5078 | must_check_value = 1; | |
5079 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 5080 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
5081 | /* We were stopped by a hardware watchpoint, but the target could |
5082 | not report the data address. We must check the watchpoint's | |
5083 | value. Access and read watchpoints are out of luck; without | |
5084 | a data address, we can't figure it out. */ | |
5085 | must_check_value = 1; | |
3a5c3e22 | 5086 | |
18a18393 VP |
5087 | if (must_check_value) |
5088 | { | |
3e43a32a MS |
5089 | char *message |
5090 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 5091 | b->base.number); |
18a18393 VP |
5092 | struct cleanup *cleanups = make_cleanup (xfree, message); |
5093 | int e = catch_errors (watchpoint_check, bs, message, | |
5094 | RETURN_MASK_ALL); | |
5095 | do_cleanups (cleanups); | |
5096 | switch (e) | |
5097 | { | |
5098 | case WP_DELETED: | |
5099 | /* We've already printed what needs to be printed. */ | |
5100 | bs->print_it = print_it_done; | |
5101 | /* Stop. */ | |
5102 | break; | |
60e1c644 PA |
5103 | case WP_IGNORE: |
5104 | bs->print_it = print_it_noop; | |
5105 | bs->stop = 0; | |
5106 | break; | |
18a18393 | 5107 | case WP_VALUE_CHANGED: |
3a5c3e22 | 5108 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 5109 | { |
85d721b8 PA |
5110 | /* There are two cases to consider here: |
5111 | ||
4a64f543 | 5112 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
5113 | In that case, trust the target, and always report |
5114 | the watchpoint hit to the user. Even though | |
5115 | reads don't cause value changes, the value may | |
5116 | have changed since the last time it was read, and | |
5117 | since we're not trapping writes, we will not see | |
5118 | those, and as such we should ignore our notion of | |
5119 | old value. | |
5120 | ||
4a64f543 | 5121 | 2. We're watching the triggered memory for both |
85d721b8 PA |
5122 | reads and writes. There are two ways this may |
5123 | happen: | |
5124 | ||
4a64f543 | 5125 | 2.1. This is a target that can't break on data |
85d721b8 PA |
5126 | reads only, but can break on accesses (reads or |
5127 | writes), such as e.g., x86. We detect this case | |
5128 | at the time we try to insert read watchpoints. | |
5129 | ||
4a64f543 | 5130 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
5131 | watchpoints, but, the user set an access or write |
5132 | watchpoint watching the same memory as this read | |
5133 | watchpoint. | |
5134 | ||
5135 | If we're watching memory writes as well as reads, | |
5136 | ignore watchpoint hits when we find that the | |
5137 | value hasn't changed, as reads don't cause | |
5138 | changes. This still gives false positives when | |
5139 | the program writes the same value to memory as | |
5140 | what there was already in memory (we will confuse | |
5141 | it for a read), but it's much better than | |
5142 | nothing. */ | |
5143 | ||
5144 | int other_write_watchpoint = 0; | |
5145 | ||
5146 | if (bl->watchpoint_type == hw_read) | |
5147 | { | |
5148 | struct breakpoint *other_b; | |
5149 | ||
5150 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
5151 | if (other_b->type == bp_hardware_watchpoint |
5152 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 5153 | { |
3a5c3e22 PA |
5154 | struct watchpoint *other_w = |
5155 | (struct watchpoint *) other_b; | |
5156 | ||
5157 | if (other_w->watchpoint_triggered | |
5158 | == watch_triggered_yes) | |
5159 | { | |
5160 | other_write_watchpoint = 1; | |
5161 | break; | |
5162 | } | |
85d721b8 PA |
5163 | } |
5164 | } | |
5165 | ||
5166 | if (other_write_watchpoint | |
5167 | || bl->watchpoint_type == hw_access) | |
5168 | { | |
5169 | /* We're watching the same memory for writes, | |
5170 | and the value changed since the last time we | |
5171 | updated it, so this trap must be for a write. | |
5172 | Ignore it. */ | |
5173 | bs->print_it = print_it_noop; | |
5174 | bs->stop = 0; | |
5175 | } | |
18a18393 VP |
5176 | } |
5177 | break; | |
5178 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
5179 | if (b->base.type == bp_hardware_watchpoint |
5180 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
5181 | { |
5182 | /* Don't stop: write watchpoints shouldn't fire if | |
5183 | the value hasn't changed. */ | |
5184 | bs->print_it = print_it_noop; | |
5185 | bs->stop = 0; | |
5186 | } | |
5187 | /* Stop. */ | |
5188 | break; | |
5189 | default: | |
5190 | /* Can't happen. */ | |
5191 | case 0: | |
5192 | /* Error from catch_errors. */ | |
3a5c3e22 | 5193 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 5194 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
5195 | /* We've already printed what needs to be printed. */ |
5196 | bs->print_it = print_it_done; | |
5197 | break; | |
5198 | } | |
5199 | } | |
5200 | else /* must_check_value == 0 */ | |
5201 | { | |
5202 | /* This is a case where some watchpoint(s) triggered, but | |
5203 | not at the address of this watchpoint, or else no | |
5204 | watchpoint triggered after all. So don't print | |
5205 | anything for this watchpoint. */ | |
5206 | bs->print_it = print_it_noop; | |
5207 | bs->stop = 0; | |
5208 | } | |
5209 | } | |
5210 | } | |
5211 | ||
7d4df6a4 DE |
5212 | /* For breakpoints that are currently marked as telling gdb to stop, |
5213 | check conditions (condition proper, frame, thread and ignore count) | |
18a18393 VP |
5214 | of breakpoint referred to by BS. If we should not stop for this |
5215 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5216 | |
18a18393 VP |
5217 | static void |
5218 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5219 | { | |
2bdf28a0 JK |
5220 | const struct bp_location *bl; |
5221 | struct breakpoint *b; | |
7d4df6a4 DE |
5222 | int value_is_zero = 0; |
5223 | struct expression *cond; | |
5224 | ||
5225 | gdb_assert (bs->stop); | |
2bdf28a0 JK |
5226 | |
5227 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5228 | bl = bs->bp_location_at; |
2bdf28a0 | 5229 | gdb_assert (bl != NULL); |
f431efe5 | 5230 | b = bs->breakpoint_at; |
2bdf28a0 | 5231 | gdb_assert (b != NULL); |
18a18393 | 5232 | |
b775012e LM |
5233 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5234 | need to do so again since GDB does not know if we stopped due to a | |
5235 | breakpoint or a single step breakpoint. */ | |
5236 | ||
18a18393 | 5237 | if (frame_id_p (b->frame_id) |
edb3359d | 5238 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 | 5239 | { |
7d4df6a4 DE |
5240 | bs->stop = 0; |
5241 | return; | |
5242 | } | |
60e1c644 | 5243 | |
12ab52e9 PA |
5244 | /* If this is a thread/task-specific breakpoint, don't waste cpu |
5245 | evaluating the condition if this isn't the specified | |
5246 | thread/task. */ | |
5247 | if ((b->thread != -1 && b->thread != pid_to_thread_id (ptid)) | |
5248 | || (b->task != 0 && b->task != ada_get_task_number (ptid))) | |
5249 | ||
6c1b0f7b DE |
5250 | { |
5251 | bs->stop = 0; | |
5252 | return; | |
5253 | } | |
5254 | ||
6dddc817 DE |
5255 | /* Evaluate extension language breakpoints that have a "stop" method |
5256 | implemented. */ | |
5257 | bs->stop = breakpoint_ext_lang_cond_says_stop (b); | |
7371cf6d | 5258 | |
7d4df6a4 DE |
5259 | if (is_watchpoint (b)) |
5260 | { | |
5261 | struct watchpoint *w = (struct watchpoint *) b; | |
3a5c3e22 | 5262 | |
7d4df6a4 DE |
5263 | cond = w->cond_exp; |
5264 | } | |
5265 | else | |
5266 | cond = bl->cond; | |
60e1c644 | 5267 | |
7d4df6a4 DE |
5268 | if (cond && b->disposition != disp_del_at_next_stop) |
5269 | { | |
5270 | int within_current_scope = 1; | |
5271 | struct watchpoint * w; | |
60e1c644 | 5272 | |
7d4df6a4 DE |
5273 | /* We use value_mark and value_free_to_mark because it could |
5274 | be a long time before we return to the command level and | |
5275 | call free_all_values. We can't call free_all_values | |
5276 | because we might be in the middle of evaluating a | |
5277 | function call. */ | |
5278 | struct value *mark = value_mark (); | |
5279 | ||
5280 | if (is_watchpoint (b)) | |
5281 | w = (struct watchpoint *) b; | |
5282 | else | |
5283 | w = NULL; | |
5284 | ||
5285 | /* Need to select the frame, with all that implies so that | |
5286 | the conditions will have the right context. Because we | |
5287 | use the frame, we will not see an inlined function's | |
5288 | variables when we arrive at a breakpoint at the start | |
5289 | of the inlined function; the current frame will be the | |
5290 | call site. */ | |
5291 | if (w == NULL || w->cond_exp_valid_block == NULL) | |
5292 | select_frame (get_current_frame ()); | |
5293 | else | |
18a18393 | 5294 | { |
7d4df6a4 DE |
5295 | struct frame_info *frame; |
5296 | ||
5297 | /* For local watchpoint expressions, which particular | |
5298 | instance of a local is being watched matters, so we | |
5299 | keep track of the frame to evaluate the expression | |
5300 | in. To evaluate the condition however, it doesn't | |
5301 | really matter which instantiation of the function | |
5302 | where the condition makes sense triggers the | |
5303 | watchpoint. This allows an expression like "watch | |
5304 | global if q > 10" set in `func', catch writes to | |
5305 | global on all threads that call `func', or catch | |
5306 | writes on all recursive calls of `func' by a single | |
5307 | thread. We simply always evaluate the condition in | |
5308 | the innermost frame that's executing where it makes | |
5309 | sense to evaluate the condition. It seems | |
5310 | intuitive. */ | |
5311 | frame = block_innermost_frame (w->cond_exp_valid_block); | |
5312 | if (frame != NULL) | |
5313 | select_frame (frame); | |
5314 | else | |
5315 | within_current_scope = 0; | |
18a18393 | 5316 | } |
7d4df6a4 DE |
5317 | if (within_current_scope) |
5318 | value_is_zero | |
5319 | = catch_errors (breakpoint_cond_eval, cond, | |
5320 | "Error in testing breakpoint condition:\n", | |
5321 | RETURN_MASK_ALL); | |
5322 | else | |
18a18393 | 5323 | { |
7d4df6a4 DE |
5324 | warning (_("Watchpoint condition cannot be tested " |
5325 | "in the current scope")); | |
5326 | /* If we failed to set the right context for this | |
5327 | watchpoint, unconditionally report it. */ | |
5328 | value_is_zero = 0; | |
18a18393 | 5329 | } |
7d4df6a4 DE |
5330 | /* FIXME-someday, should give breakpoint #. */ |
5331 | value_free_to_mark (mark); | |
18a18393 | 5332 | } |
7d4df6a4 DE |
5333 | |
5334 | if (cond && value_is_zero) | |
5335 | { | |
5336 | bs->stop = 0; | |
5337 | } | |
7d4df6a4 DE |
5338 | else if (b->ignore_count > 0) |
5339 | { | |
5340 | b->ignore_count--; | |
5341 | bs->stop = 0; | |
5342 | /* Increase the hit count even though we don't stop. */ | |
5343 | ++(b->hit_count); | |
5344 | observer_notify_breakpoint_modified (b); | |
5345 | } | |
18a18393 VP |
5346 | } |
5347 | ||
5348 | ||
9709f61c | 5349 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5350 | BP_ADDR in thread PTID. |
c906108c | 5351 | |
d983da9c | 5352 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5353 | don't understand this stop. Result is a chain of bpstat's such |
5354 | that: | |
c906108c | 5355 | |
c5aa993b | 5356 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5357 | |
c5aa993b | 5358 | if we understand why we stopped, the result is not null. |
c906108c | 5359 | |
c5aa993b JM |
5360 | Each element of the chain refers to a particular breakpoint or |
5361 | watchpoint at which we have stopped. (We may have stopped for | |
5362 | several reasons concurrently.) | |
c906108c | 5363 | |
c5aa993b JM |
5364 | Each element of the chain has valid next, breakpoint_at, |
5365 | commands, FIXME??? fields. */ | |
c906108c SS |
5366 | |
5367 | bpstat | |
6c95b8df | 5368 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5369 | CORE_ADDR bp_addr, ptid_t ptid, |
5370 | const struct target_waitstatus *ws) | |
c906108c | 5371 | { |
0d381245 | 5372 | struct breakpoint *b = NULL; |
afe38095 | 5373 | struct bp_location *bl; |
20874c92 | 5374 | struct bp_location *loc; |
5760d0ab JK |
5375 | /* First item of allocated bpstat's. */ |
5376 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5377 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5378 | bpstat bs; |
20874c92 | 5379 | int ix; |
429374b8 | 5380 | int need_remove_insert; |
f431efe5 | 5381 | int removed_any; |
c906108c | 5382 | |
f431efe5 PA |
5383 | /* First, build the bpstat chain with locations that explain a |
5384 | target stop, while being careful to not set the target running, | |
5385 | as that may invalidate locations (in particular watchpoint | |
5386 | locations are recreated). Resuming will happen here with | |
5387 | breakpoint conditions or watchpoint expressions that include | |
5388 | inferior function calls. */ | |
c5aa993b | 5389 | |
429374b8 JK |
5390 | ALL_BREAKPOINTS (b) |
5391 | { | |
5392 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
5393 | continue; | |
a5606eee | 5394 | |
429374b8 JK |
5395 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5396 | { | |
4a64f543 MS |
5397 | /* For hardware watchpoints, we look only at the first |
5398 | location. The watchpoint_check function will work on the | |
5399 | entire expression, not the individual locations. For | |
5400 | read watchpoints, the watchpoints_triggered function has | |
5401 | checked all locations already. */ | |
429374b8 JK |
5402 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5403 | break; | |
18a18393 | 5404 | |
f6592439 | 5405 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5406 | continue; |
c5aa993b | 5407 | |
09ac7c10 | 5408 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5409 | continue; |
c5aa993b | 5410 | |
4a64f543 MS |
5411 | /* Come here if it's a watchpoint, or if the break address |
5412 | matches. */ | |
c5aa993b | 5413 | |
4a64f543 MS |
5414 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5415 | explain stop. */ | |
c5aa993b | 5416 | |
f431efe5 PA |
5417 | /* Assume we stop. Should we find a watchpoint that is not |
5418 | actually triggered, or if the condition of the breakpoint | |
5419 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5420 | bs->stop = 1; |
5421 | bs->print = 1; | |
d983da9c | 5422 | |
f431efe5 PA |
5423 | /* If this is a scope breakpoint, mark the associated |
5424 | watchpoint as triggered so that we will handle the | |
5425 | out-of-scope event. We'll get to the watchpoint next | |
5426 | iteration. */ | |
d0fb5eae | 5427 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5428 | { |
5429 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5430 | ||
5431 | w->watchpoint_triggered = watch_triggered_yes; | |
5432 | } | |
f431efe5 PA |
5433 | } |
5434 | } | |
5435 | ||
5436 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
5437 | { | |
f1310107 | 5438 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 5439 | { |
5760d0ab | 5440 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
5441 | /* For hits of moribund locations, we should just proceed. */ |
5442 | bs->stop = 0; | |
5443 | bs->print = 0; | |
5444 | bs->print_it = print_it_noop; | |
5445 | } | |
5446 | } | |
5447 | ||
edcc5120 TT |
5448 | /* A bit of special processing for shlib breakpoints. We need to |
5449 | process solib loading here, so that the lists of loaded and | |
5450 | unloaded libraries are correct before we handle "catch load" and | |
5451 | "catch unload". */ | |
5452 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5453 | { | |
5d268276 | 5454 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5455 | { |
5456 | handle_solib_event (); | |
5457 | break; | |
5458 | } | |
5459 | } | |
5460 | ||
f431efe5 PA |
5461 | /* Now go through the locations that caused the target to stop, and |
5462 | check whether we're interested in reporting this stop to higher | |
5463 | layers, or whether we should resume the target transparently. */ | |
5464 | ||
5465 | removed_any = 0; | |
5466 | ||
5760d0ab | 5467 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5468 | { |
5469 | if (!bs->stop) | |
5470 | continue; | |
5471 | ||
f431efe5 | 5472 | b = bs->breakpoint_at; |
348d480f PA |
5473 | b->ops->check_status (bs); |
5474 | if (bs->stop) | |
28010a5d | 5475 | { |
348d480f | 5476 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5477 | |
429374b8 JK |
5478 | if (bs->stop) |
5479 | { | |
5480 | ++(b->hit_count); | |
8d3788bd | 5481 | observer_notify_breakpoint_modified (b); |
c906108c | 5482 | |
4a64f543 | 5483 | /* We will stop here. */ |
429374b8 JK |
5484 | if (b->disposition == disp_disable) |
5485 | { | |
816338b5 SS |
5486 | --(b->enable_count); |
5487 | if (b->enable_count <= 0 | |
5488 | && b->enable_state != bp_permanent) | |
429374b8 | 5489 | b->enable_state = bp_disabled; |
f431efe5 | 5490 | removed_any = 1; |
429374b8 JK |
5491 | } |
5492 | if (b->silent) | |
5493 | bs->print = 0; | |
5494 | bs->commands = b->commands; | |
9add0f1b | 5495 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5496 | if (command_line_is_silent (bs->commands |
5497 | ? bs->commands->commands : NULL)) | |
5498 | bs->print = 0; | |
9d6e6e84 HZ |
5499 | |
5500 | b->ops->after_condition_true (bs); | |
429374b8 JK |
5501 | } |
5502 | ||
348d480f | 5503 | } |
a9b3a50f PA |
5504 | |
5505 | /* Print nothing for this entry if we don't stop or don't | |
5506 | print. */ | |
5507 | if (!bs->stop || !bs->print) | |
5508 | bs->print_it = print_it_noop; | |
429374b8 | 5509 | } |
876fa593 | 5510 | |
d983da9c DJ |
5511 | /* If we aren't stopping, the value of some hardware watchpoint may |
5512 | not have changed, but the intermediate memory locations we are | |
5513 | watching may have. Don't bother if we're stopping; this will get | |
5514 | done later. */ | |
d832cb68 | 5515 | need_remove_insert = 0; |
5760d0ab JK |
5516 | if (! bpstat_causes_stop (bs_head)) |
5517 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5518 | if (!bs->stop |
f431efe5 PA |
5519 | && bs->breakpoint_at |
5520 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5521 | { |
3a5c3e22 PA |
5522 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5523 | ||
5524 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5525 | need_remove_insert = 1; |
d983da9c DJ |
5526 | } |
5527 | ||
d832cb68 | 5528 | if (need_remove_insert) |
2d134ed3 | 5529 | update_global_location_list (1); |
f431efe5 PA |
5530 | else if (removed_any) |
5531 | update_global_location_list (0); | |
d832cb68 | 5532 | |
5760d0ab | 5533 | return bs_head; |
c906108c | 5534 | } |
628fe4e4 JK |
5535 | |
5536 | static void | |
5537 | handle_jit_event (void) | |
5538 | { | |
5539 | struct frame_info *frame; | |
5540 | struct gdbarch *gdbarch; | |
5541 | ||
5542 | /* Switch terminal for any messages produced by | |
5543 | breakpoint_re_set. */ | |
5544 | target_terminal_ours_for_output (); | |
5545 | ||
5546 | frame = get_current_frame (); | |
5547 | gdbarch = get_frame_arch (frame); | |
5548 | ||
5549 | jit_event_handler (gdbarch); | |
5550 | ||
5551 | target_terminal_inferior (); | |
5552 | } | |
5553 | ||
5554 | /* Prepare WHAT final decision for infrun. */ | |
5555 | ||
5556 | /* Decide what infrun needs to do with this bpstat. */ | |
5557 | ||
c906108c | 5558 | struct bpstat_what |
0e30163f | 5559 | bpstat_what (bpstat bs_head) |
c906108c | 5560 | { |
c906108c | 5561 | struct bpstat_what retval; |
628fe4e4 | 5562 | int jit_event = 0; |
0e30163f | 5563 | bpstat bs; |
c906108c | 5564 | |
628fe4e4 | 5565 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5566 | retval.call_dummy = STOP_NONE; |
186c406b | 5567 | retval.is_longjmp = 0; |
628fe4e4 | 5568 | |
0e30163f | 5569 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5570 | { |
628fe4e4 JK |
5571 | /* Extract this BS's action. After processing each BS, we check |
5572 | if its action overrides all we've seem so far. */ | |
5573 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5574 | enum bptype bptype; | |
5575 | ||
c906108c | 5576 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5577 | { |
5578 | /* I suspect this can happen if it was a momentary | |
5579 | breakpoint which has since been deleted. */ | |
5580 | bptype = bp_none; | |
5581 | } | |
20874c92 | 5582 | else |
f431efe5 | 5583 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5584 | |
5585 | switch (bptype) | |
c906108c SS |
5586 | { |
5587 | case bp_none: | |
628fe4e4 | 5588 | break; |
c906108c SS |
5589 | case bp_breakpoint: |
5590 | case bp_hardware_breakpoint: | |
5591 | case bp_until: | |
5592 | case bp_finish: | |
a9b3a50f | 5593 | case bp_shlib_event: |
c906108c SS |
5594 | if (bs->stop) |
5595 | { | |
5596 | if (bs->print) | |
628fe4e4 | 5597 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5598 | else |
628fe4e4 | 5599 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5600 | } |
5601 | else | |
628fe4e4 | 5602 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5603 | break; |
5604 | case bp_watchpoint: | |
5605 | case bp_hardware_watchpoint: | |
5606 | case bp_read_watchpoint: | |
5607 | case bp_access_watchpoint: | |
5608 | if (bs->stop) | |
5609 | { | |
5610 | if (bs->print) | |
628fe4e4 | 5611 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5612 | else |
628fe4e4 | 5613 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5614 | } |
5615 | else | |
628fe4e4 JK |
5616 | { |
5617 | /* There was a watchpoint, but we're not stopping. | |
5618 | This requires no further action. */ | |
5619 | } | |
c906108c SS |
5620 | break; |
5621 | case bp_longjmp: | |
e2e4d78b | 5622 | case bp_longjmp_call_dummy: |
186c406b | 5623 | case bp_exception: |
628fe4e4 | 5624 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5625 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5626 | break; |
5627 | case bp_longjmp_resume: | |
186c406b | 5628 | case bp_exception_resume: |
628fe4e4 | 5629 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5630 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5631 | break; |
5632 | case bp_step_resume: | |
5633 | if (bs->stop) | |
628fe4e4 JK |
5634 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5635 | else | |
c906108c | 5636 | { |
628fe4e4 JK |
5637 | /* It is for the wrong frame. */ |
5638 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5639 | } |
c906108c | 5640 | break; |
2c03e5be PA |
5641 | case bp_hp_step_resume: |
5642 | if (bs->stop) | |
5643 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5644 | else | |
5645 | { | |
5646 | /* It is for the wrong frame. */ | |
5647 | this_action = BPSTAT_WHAT_SINGLE; | |
5648 | } | |
5649 | break; | |
c906108c | 5650 | case bp_watchpoint_scope: |
c4093a6a | 5651 | case bp_thread_event: |
1900040c | 5652 | case bp_overlay_event: |
0fd8e87f | 5653 | case bp_longjmp_master: |
aa7d318d | 5654 | case bp_std_terminate_master: |
186c406b | 5655 | case bp_exception_master: |
628fe4e4 | 5656 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5657 | break; |
ce78b96d | 5658 | case bp_catchpoint: |
c5aa993b JM |
5659 | if (bs->stop) |
5660 | { | |
5661 | if (bs->print) | |
628fe4e4 | 5662 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5663 | else |
628fe4e4 | 5664 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5665 | } |
5666 | else | |
628fe4e4 JK |
5667 | { |
5668 | /* There was a catchpoint, but we're not stopping. | |
5669 | This requires no further action. */ | |
5670 | } | |
5671 | break; | |
628fe4e4 JK |
5672 | case bp_jit_event: |
5673 | jit_event = 1; | |
5674 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5675 | break; |
c906108c | 5676 | case bp_call_dummy: |
53a5351d JM |
5677 | /* Make sure the action is stop (silent or noisy), |
5678 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5679 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5680 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5681 | break; |
5682 | case bp_std_terminate: | |
5683 | /* Make sure the action is stop (silent or noisy), | |
5684 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5685 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5686 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5687 | break; |
1042e4c0 | 5688 | case bp_tracepoint: |
7a697b8d | 5689 | case bp_fast_tracepoint: |
0fb4aa4b | 5690 | case bp_static_tracepoint: |
1042e4c0 SS |
5691 | /* Tracepoint hits should not be reported back to GDB, and |
5692 | if one got through somehow, it should have been filtered | |
5693 | out already. */ | |
5694 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5695 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5696 | break; |
5697 | case bp_gnu_ifunc_resolver: | |
5698 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5699 | this_action = BPSTAT_WHAT_SINGLE; | |
5700 | break; | |
5701 | case bp_gnu_ifunc_resolver_return: | |
5702 | /* The breakpoint will be removed, execution will restart from the | |
5703 | PC of the former breakpoint. */ | |
5704 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5705 | break; | |
e7e0cddf SS |
5706 | |
5707 | case bp_dprintf: | |
a11cfd87 HZ |
5708 | if (bs->stop) |
5709 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5710 | else | |
5711 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5712 | break; |
5713 | ||
628fe4e4 JK |
5714 | default: |
5715 | internal_error (__FILE__, __LINE__, | |
5716 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5717 | } |
628fe4e4 JK |
5718 | |
5719 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5720 | } |
628fe4e4 | 5721 | |
0e30163f JK |
5722 | /* These operations may affect the bs->breakpoint_at state so they are |
5723 | delayed after MAIN_ACTION is decided above. */ | |
5724 | ||
628fe4e4 JK |
5725 | if (jit_event) |
5726 | { | |
5727 | if (debug_infrun) | |
5728 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5729 | ||
5730 | handle_jit_event (); | |
5731 | } | |
5732 | ||
0e30163f JK |
5733 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5734 | { | |
5735 | struct breakpoint *b = bs->breakpoint_at; | |
5736 | ||
5737 | if (b == NULL) | |
5738 | continue; | |
5739 | switch (b->type) | |
5740 | { | |
5741 | case bp_gnu_ifunc_resolver: | |
5742 | gnu_ifunc_resolver_stop (b); | |
5743 | break; | |
5744 | case bp_gnu_ifunc_resolver_return: | |
5745 | gnu_ifunc_resolver_return_stop (b); | |
5746 | break; | |
5747 | } | |
5748 | } | |
5749 | ||
c906108c SS |
5750 | return retval; |
5751 | } | |
5752 | ||
5753 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5754 | without hardware support). This isn't related to a specific bpstat, | |
5755 | just to things like whether watchpoints are set. */ | |
5756 | ||
c5aa993b | 5757 | int |
fba45db2 | 5758 | bpstat_should_step (void) |
c906108c SS |
5759 | { |
5760 | struct breakpoint *b; | |
cc59ec59 | 5761 | |
c906108c | 5762 | ALL_BREAKPOINTS (b) |
717a8278 | 5763 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5764 | return 1; |
c906108c SS |
5765 | return 0; |
5766 | } | |
5767 | ||
67822962 PA |
5768 | int |
5769 | bpstat_causes_stop (bpstat bs) | |
5770 | { | |
5771 | for (; bs != NULL; bs = bs->next) | |
5772 | if (bs->stop) | |
5773 | return 1; | |
5774 | ||
5775 | return 0; | |
5776 | } | |
5777 | ||
c906108c | 5778 | \f |
c5aa993b | 5779 | |
170b53b2 UW |
5780 | /* Compute a string of spaces suitable to indent the next line |
5781 | so it starts at the position corresponding to the table column | |
5782 | named COL_NAME in the currently active table of UIOUT. */ | |
5783 | ||
5784 | static char * | |
5785 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5786 | { | |
5787 | static char wrap_indent[80]; | |
5788 | int i, total_width, width, align; | |
5789 | char *text; | |
5790 | ||
5791 | total_width = 0; | |
5792 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5793 | { | |
5794 | if (strcmp (text, col_name) == 0) | |
5795 | { | |
5796 | gdb_assert (total_width < sizeof wrap_indent); | |
5797 | memset (wrap_indent, ' ', total_width); | |
5798 | wrap_indent[total_width] = 0; | |
5799 | ||
5800 | return wrap_indent; | |
5801 | } | |
5802 | ||
5803 | total_width += width + 1; | |
5804 | } | |
5805 | ||
5806 | return NULL; | |
5807 | } | |
5808 | ||
b775012e LM |
5809 | /* Determine if the locations of this breakpoint will have their conditions |
5810 | evaluated by the target, host or a mix of both. Returns the following: | |
5811 | ||
5812 | "host": Host evals condition. | |
5813 | "host or target": Host or Target evals condition. | |
5814 | "target": Target evals condition. | |
5815 | */ | |
5816 | ||
5817 | static const char * | |
5818 | bp_condition_evaluator (struct breakpoint *b) | |
5819 | { | |
5820 | struct bp_location *bl; | |
5821 | char host_evals = 0; | |
5822 | char target_evals = 0; | |
5823 | ||
5824 | if (!b) | |
5825 | return NULL; | |
5826 | ||
5827 | if (!is_breakpoint (b)) | |
5828 | return NULL; | |
5829 | ||
5830 | if (gdb_evaluates_breakpoint_condition_p () | |
5831 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5832 | return condition_evaluation_host; | |
5833 | ||
5834 | for (bl = b->loc; bl; bl = bl->next) | |
5835 | { | |
5836 | if (bl->cond_bytecode) | |
5837 | target_evals++; | |
5838 | else | |
5839 | host_evals++; | |
5840 | } | |
5841 | ||
5842 | if (host_evals && target_evals) | |
5843 | return condition_evaluation_both; | |
5844 | else if (target_evals) | |
5845 | return condition_evaluation_target; | |
5846 | else | |
5847 | return condition_evaluation_host; | |
5848 | } | |
5849 | ||
5850 | /* Determine the breakpoint location's condition evaluator. This is | |
5851 | similar to bp_condition_evaluator, but for locations. */ | |
5852 | ||
5853 | static const char * | |
5854 | bp_location_condition_evaluator (struct bp_location *bl) | |
5855 | { | |
5856 | if (bl && !is_breakpoint (bl->owner)) | |
5857 | return NULL; | |
5858 | ||
5859 | if (gdb_evaluates_breakpoint_condition_p () | |
5860 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5861 | return condition_evaluation_host; | |
5862 | ||
5863 | if (bl && bl->cond_bytecode) | |
5864 | return condition_evaluation_target; | |
5865 | else | |
5866 | return condition_evaluation_host; | |
5867 | } | |
5868 | ||
859825b8 JK |
5869 | /* Print the LOC location out of the list of B->LOC locations. */ |
5870 | ||
170b53b2 UW |
5871 | static void |
5872 | print_breakpoint_location (struct breakpoint *b, | |
5873 | struct bp_location *loc) | |
0d381245 | 5874 | { |
79a45e25 | 5875 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
5876 | struct cleanup *old_chain = save_current_program_space (); |
5877 | ||
859825b8 JK |
5878 | if (loc != NULL && loc->shlib_disabled) |
5879 | loc = NULL; | |
5880 | ||
6c95b8df PA |
5881 | if (loc != NULL) |
5882 | set_current_program_space (loc->pspace); | |
5883 | ||
56435ebe TT |
5884 | if (b->display_canonical) |
5885 | ui_out_field_string (uiout, "what", b->addr_string); | |
2f202fde | 5886 | else if (loc && loc->symtab) |
0d381245 VP |
5887 | { |
5888 | struct symbol *sym | |
5889 | = find_pc_sect_function (loc->address, loc->section); | |
5890 | if (sym) | |
5891 | { | |
5892 | ui_out_text (uiout, "in "); | |
5893 | ui_out_field_string (uiout, "func", | |
5894 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
5895 | ui_out_text (uiout, " "); |
5896 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
5897 | ui_out_text (uiout, "at "); | |
0d381245 | 5898 | } |
05cba821 JK |
5899 | ui_out_field_string (uiout, "file", |
5900 | symtab_to_filename_for_display (loc->symtab)); | |
0d381245 | 5901 | ui_out_text (uiout, ":"); |
05cba821 | 5902 | |
0d381245 | 5903 | if (ui_out_is_mi_like_p (uiout)) |
2f202fde JK |
5904 | ui_out_field_string (uiout, "fullname", |
5905 | symtab_to_fullname (loc->symtab)); | |
0d381245 | 5906 | |
f8eba3c6 | 5907 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 5908 | } |
859825b8 | 5909 | else if (loc) |
0d381245 | 5910 | { |
f99d8bf4 PA |
5911 | struct ui_file *stb = mem_fileopen (); |
5912 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 5913 | |
f99d8bf4 | 5914 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 5915 | demangle, ""); |
0d381245 | 5916 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
5917 | |
5918 | do_cleanups (stb_chain); | |
0d381245 | 5919 | } |
859825b8 JK |
5920 | else |
5921 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 5922 | |
b775012e LM |
5923 | if (loc && is_breakpoint (b) |
5924 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5925 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5926 | { | |
5927 | ui_out_text (uiout, " ("); | |
5928 | ui_out_field_string (uiout, "evaluated-by", | |
5929 | bp_location_condition_evaluator (loc)); | |
5930 | ui_out_text (uiout, ")"); | |
5931 | } | |
5932 | ||
6c95b8df | 5933 | do_cleanups (old_chain); |
0d381245 VP |
5934 | } |
5935 | ||
269b11a2 PA |
5936 | static const char * |
5937 | bptype_string (enum bptype type) | |
c906108c | 5938 | { |
c4093a6a JM |
5939 | struct ep_type_description |
5940 | { | |
5941 | enum bptype type; | |
5942 | char *description; | |
5943 | }; | |
5944 | static struct ep_type_description bptypes[] = | |
c906108c | 5945 | { |
c5aa993b JM |
5946 | {bp_none, "?deleted?"}, |
5947 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5948 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
5949 | {bp_until, "until"}, |
5950 | {bp_finish, "finish"}, | |
5951 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5952 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5953 | {bp_read_watchpoint, "read watchpoint"}, |
5954 | {bp_access_watchpoint, "acc watchpoint"}, | |
5955 | {bp_longjmp, "longjmp"}, | |
5956 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5957 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5958 | {bp_exception, "exception"}, |
5959 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5960 | {bp_step_resume, "step resume"}, |
2c03e5be | 5961 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5962 | {bp_watchpoint_scope, "watchpoint scope"}, |
5963 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5964 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5965 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5966 | {bp_thread_event, "thread events"}, |
1900040c | 5967 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5968 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5969 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5970 | {bp_exception_master, "exception master"}, |
ce78b96d | 5971 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5972 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5973 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5974 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5975 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5976 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5977 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5978 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5979 | }; |
269b11a2 PA |
5980 | |
5981 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5982 | || ((int) type != bptypes[(int) type].type)) | |
5983 | internal_error (__FILE__, __LINE__, | |
5984 | _("bptypes table does not describe type #%d."), | |
5985 | (int) type); | |
5986 | ||
5987 | return bptypes[(int) type].description; | |
5988 | } | |
5989 | ||
998580f1 MK |
5990 | /* For MI, output a field named 'thread-groups' with a list as the value. |
5991 | For CLI, prefix the list with the string 'inf'. */ | |
5992 | ||
5993 | static void | |
5994 | output_thread_groups (struct ui_out *uiout, | |
5995 | const char *field_name, | |
5996 | VEC(int) *inf_num, | |
5997 | int mi_only) | |
5998 | { | |
752eb8b4 | 5999 | struct cleanup *back_to; |
998580f1 MK |
6000 | int is_mi = ui_out_is_mi_like_p (uiout); |
6001 | int inf; | |
6002 | int i; | |
6003 | ||
6004 | /* For backward compatibility, don't display inferiors in CLI unless | |
6005 | there are several. Always display them for MI. */ | |
6006 | if (!is_mi && mi_only) | |
6007 | return; | |
6008 | ||
752eb8b4 TT |
6009 | back_to = make_cleanup_ui_out_list_begin_end (uiout, field_name); |
6010 | ||
998580f1 MK |
6011 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
6012 | { | |
6013 | if (is_mi) | |
6014 | { | |
6015 | char mi_group[10]; | |
6016 | ||
6017 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
6018 | ui_out_field_string (uiout, NULL, mi_group); | |
6019 | } | |
6020 | else | |
6021 | { | |
6022 | if (i == 0) | |
6023 | ui_out_text (uiout, " inf "); | |
6024 | else | |
6025 | ui_out_text (uiout, ", "); | |
6026 | ||
6027 | ui_out_text (uiout, plongest (inf)); | |
6028 | } | |
6029 | } | |
6030 | ||
6031 | do_cleanups (back_to); | |
6032 | } | |
6033 | ||
269b11a2 PA |
6034 | /* Print B to gdb_stdout. */ |
6035 | ||
6036 | static void | |
6037 | print_one_breakpoint_location (struct breakpoint *b, | |
6038 | struct bp_location *loc, | |
6039 | int loc_number, | |
6040 | struct bp_location **last_loc, | |
269b11a2 PA |
6041 | int allflag) |
6042 | { | |
6043 | struct command_line *l; | |
c2c6d25f | 6044 | static char bpenables[] = "nynny"; |
c906108c | 6045 | |
79a45e25 | 6046 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
6047 | int header_of_multiple = 0; |
6048 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
6049 | struct value_print_options opts; |
6050 | ||
6051 | get_user_print_options (&opts); | |
0d381245 VP |
6052 | |
6053 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
6054 | /* See comment in print_one_breakpoint concerning treatment of |
6055 | breakpoints with single disabled location. */ | |
0d381245 VP |
6056 | if (loc == NULL |
6057 | && (b->loc != NULL | |
6058 | && (b->loc->next != NULL || !b->loc->enabled))) | |
6059 | header_of_multiple = 1; | |
6060 | if (loc == NULL) | |
6061 | loc = b->loc; | |
6062 | ||
c4093a6a JM |
6063 | annotate_record (); |
6064 | ||
6065 | /* 1 */ | |
6066 | annotate_field (0); | |
0d381245 VP |
6067 | if (part_of_multiple) |
6068 | { | |
6069 | char *formatted; | |
0c6773c1 | 6070 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
6071 | ui_out_field_string (uiout, "number", formatted); |
6072 | xfree (formatted); | |
6073 | } | |
6074 | else | |
6075 | { | |
6076 | ui_out_field_int (uiout, "number", b->number); | |
6077 | } | |
c4093a6a JM |
6078 | |
6079 | /* 2 */ | |
6080 | annotate_field (1); | |
0d381245 VP |
6081 | if (part_of_multiple) |
6082 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
6083 | else |
6084 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
6085 | |
6086 | /* 3 */ | |
6087 | annotate_field (2); | |
0d381245 VP |
6088 | if (part_of_multiple) |
6089 | ui_out_field_skip (uiout, "disp"); | |
6090 | else | |
2cec12e5 | 6091 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 6092 | |
c4093a6a JM |
6093 | |
6094 | /* 4 */ | |
6095 | annotate_field (3); | |
0d381245 | 6096 | if (part_of_multiple) |
54e52265 | 6097 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 6098 | else |
4a64f543 MS |
6099 | ui_out_field_fmt (uiout, "enabled", "%c", |
6100 | bpenables[(int) b->enable_state]); | |
54e52265 | 6101 | ui_out_spaces (uiout, 2); |
0d381245 | 6102 | |
c4093a6a JM |
6103 | |
6104 | /* 5 and 6 */ | |
3086aeae | 6105 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 6106 | { |
4a64f543 MS |
6107 | /* Although the print_one can possibly print all locations, |
6108 | calling it here is not likely to get any nice result. So, | |
6109 | make sure there's just one location. */ | |
0d381245 | 6110 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 6111 | b->ops->print_one (b, last_loc); |
0d381245 | 6112 | } |
3086aeae DJ |
6113 | else |
6114 | switch (b->type) | |
6115 | { | |
6116 | case bp_none: | |
6117 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 6118 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 6119 | break; |
c906108c | 6120 | |
3086aeae DJ |
6121 | case bp_watchpoint: |
6122 | case bp_hardware_watchpoint: | |
6123 | case bp_read_watchpoint: | |
6124 | case bp_access_watchpoint: | |
3a5c3e22 PA |
6125 | { |
6126 | struct watchpoint *w = (struct watchpoint *) b; | |
6127 | ||
6128 | /* Field 4, the address, is omitted (which makes the columns | |
6129 | not line up too nicely with the headers, but the effect | |
6130 | is relatively readable). */ | |
6131 | if (opts.addressprint) | |
6132 | ui_out_field_skip (uiout, "addr"); | |
6133 | annotate_field (5); | |
6134 | ui_out_field_string (uiout, "what", w->exp_string); | |
6135 | } | |
3086aeae DJ |
6136 | break; |
6137 | ||
3086aeae DJ |
6138 | case bp_breakpoint: |
6139 | case bp_hardware_breakpoint: | |
6140 | case bp_until: | |
6141 | case bp_finish: | |
6142 | case bp_longjmp: | |
6143 | case bp_longjmp_resume: | |
e2e4d78b | 6144 | case bp_longjmp_call_dummy: |
186c406b TT |
6145 | case bp_exception: |
6146 | case bp_exception_resume: | |
3086aeae | 6147 | case bp_step_resume: |
2c03e5be | 6148 | case bp_hp_step_resume: |
3086aeae DJ |
6149 | case bp_watchpoint_scope: |
6150 | case bp_call_dummy: | |
aa7d318d | 6151 | case bp_std_terminate: |
3086aeae DJ |
6152 | case bp_shlib_event: |
6153 | case bp_thread_event: | |
6154 | case bp_overlay_event: | |
0fd8e87f | 6155 | case bp_longjmp_master: |
aa7d318d | 6156 | case bp_std_terminate_master: |
186c406b | 6157 | case bp_exception_master: |
1042e4c0 | 6158 | case bp_tracepoint: |
7a697b8d | 6159 | case bp_fast_tracepoint: |
0fb4aa4b | 6160 | case bp_static_tracepoint: |
e7e0cddf | 6161 | case bp_dprintf: |
4efc6507 | 6162 | case bp_jit_event: |
0e30163f JK |
6163 | case bp_gnu_ifunc_resolver: |
6164 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 6165 | if (opts.addressprint) |
3086aeae DJ |
6166 | { |
6167 | annotate_field (4); | |
54e52265 | 6168 | if (header_of_multiple) |
0d381245 | 6169 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 6170 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 6171 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 6172 | else |
5af949e3 UW |
6173 | ui_out_field_core_addr (uiout, "addr", |
6174 | loc->gdbarch, loc->address); | |
3086aeae DJ |
6175 | } |
6176 | annotate_field (5); | |
0d381245 | 6177 | if (!header_of_multiple) |
170b53b2 | 6178 | print_breakpoint_location (b, loc); |
0d381245 | 6179 | if (b->loc) |
a6d9a66e | 6180 | *last_loc = b->loc; |
3086aeae DJ |
6181 | break; |
6182 | } | |
c906108c | 6183 | |
6c95b8df | 6184 | |
998580f1 | 6185 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
6186 | { |
6187 | struct inferior *inf; | |
998580f1 MK |
6188 | VEC(int) *inf_num = NULL; |
6189 | int mi_only = 1; | |
6c95b8df | 6190 | |
998580f1 | 6191 | ALL_INFERIORS (inf) |
6c95b8df PA |
6192 | { |
6193 | if (inf->pspace == loc->pspace) | |
998580f1 | 6194 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6195 | } |
998580f1 MK |
6196 | |
6197 | /* For backward compatibility, don't display inferiors in CLI unless | |
6198 | there are several. Always display for MI. */ | |
6199 | if (allflag | |
6200 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6201 | && (number_of_program_spaces () > 1 | |
6202 | || number_of_inferiors () > 1) | |
6203 | /* LOC is for existing B, it cannot be in | |
6204 | moribund_locations and thus having NULL OWNER. */ | |
6205 | && loc->owner->type != bp_catchpoint)) | |
6206 | mi_only = 0; | |
6207 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6208 | VEC_free (int, inf_num); | |
6c95b8df PA |
6209 | } |
6210 | ||
4a306c9a | 6211 | if (!part_of_multiple) |
c4093a6a | 6212 | { |
4a306c9a JB |
6213 | if (b->thread != -1) |
6214 | { | |
6215 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6216 | "stop only in" line a little further down. */ |
4a306c9a JB |
6217 | ui_out_text (uiout, " thread "); |
6218 | ui_out_field_int (uiout, "thread", b->thread); | |
6219 | } | |
6220 | else if (b->task != 0) | |
6221 | { | |
6222 | ui_out_text (uiout, " task "); | |
6223 | ui_out_field_int (uiout, "task", b->task); | |
6224 | } | |
c4093a6a | 6225 | } |
f1310107 | 6226 | |
8b93c638 | 6227 | ui_out_text (uiout, "\n"); |
f1310107 | 6228 | |
348d480f | 6229 | if (!part_of_multiple) |
f1310107 TJB |
6230 | b->ops->print_one_detail (b, uiout); |
6231 | ||
0d381245 | 6232 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6233 | { |
6234 | annotate_field (6); | |
8b93c638 | 6235 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 6236 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6237 | the frame ID. */ |
5af949e3 UW |
6238 | ui_out_field_core_addr (uiout, "frame", |
6239 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 6240 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6241 | } |
6242 | ||
28010a5d | 6243 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6244 | { |
6245 | annotate_field (7); | |
d77f58be | 6246 | if (is_tracepoint (b)) |
1042e4c0 SS |
6247 | ui_out_text (uiout, "\ttrace only if "); |
6248 | else | |
6249 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6250 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6251 | |
6252 | /* Print whether the target is doing the breakpoint's condition | |
6253 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6254 | if (is_breakpoint (b) | |
6255 | && breakpoint_condition_evaluation_mode () | |
6256 | == condition_evaluation_target) | |
6257 | { | |
6258 | ui_out_text (uiout, " ("); | |
6259 | ui_out_field_string (uiout, "evaluated-by", | |
6260 | bp_condition_evaluator (b)); | |
6261 | ui_out_text (uiout, " evals)"); | |
6262 | } | |
0101ce28 JJ |
6263 | ui_out_text (uiout, "\n"); |
6264 | } | |
6265 | ||
0d381245 | 6266 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6267 | { |
4a64f543 | 6268 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6269 | ui_out_text (uiout, "\tstop only in thread "); |
6270 | ui_out_field_int (uiout, "thread", b->thread); | |
6271 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6272 | } |
6273 | ||
556ec64d YQ |
6274 | if (!part_of_multiple) |
6275 | { | |
6276 | if (b->hit_count) | |
31f56a27 YQ |
6277 | { |
6278 | /* FIXME should make an annotation for this. */ | |
6279 | if (is_catchpoint (b)) | |
6280 | ui_out_text (uiout, "\tcatchpoint"); | |
6281 | else if (is_tracepoint (b)) | |
6282 | ui_out_text (uiout, "\ttracepoint"); | |
6283 | else | |
6284 | ui_out_text (uiout, "\tbreakpoint"); | |
6285 | ui_out_text (uiout, " already hit "); | |
6286 | ui_out_field_int (uiout, "times", b->hit_count); | |
6287 | if (b->hit_count == 1) | |
6288 | ui_out_text (uiout, " time\n"); | |
6289 | else | |
6290 | ui_out_text (uiout, " times\n"); | |
6291 | } | |
556ec64d YQ |
6292 | else |
6293 | { | |
31f56a27 YQ |
6294 | /* Output the count also if it is zero, but only if this is mi. */ |
6295 | if (ui_out_is_mi_like_p (uiout)) | |
6296 | ui_out_field_int (uiout, "times", b->hit_count); | |
556ec64d YQ |
6297 | } |
6298 | } | |
8b93c638 | 6299 | |
0d381245 | 6300 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6301 | { |
6302 | annotate_field (8); | |
8b93c638 JM |
6303 | ui_out_text (uiout, "\tignore next "); |
6304 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6305 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6306 | } |
059fb39f | 6307 | |
816338b5 SS |
6308 | /* Note that an enable count of 1 corresponds to "enable once" |
6309 | behavior, which is reported by the combination of enablement and | |
6310 | disposition, so we don't need to mention it here. */ | |
6311 | if (!part_of_multiple && b->enable_count > 1) | |
6312 | { | |
6313 | annotate_field (8); | |
6314 | ui_out_text (uiout, "\tdisable after "); | |
6315 | /* Tweak the wording to clarify that ignore and enable counts | |
6316 | are distinct, and have additive effect. */ | |
6317 | if (b->ignore_count) | |
6318 | ui_out_text (uiout, "additional "); | |
6319 | else | |
6320 | ui_out_text (uiout, "next "); | |
6321 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6322 | ui_out_text (uiout, " hits\n"); | |
6323 | } | |
6324 | ||
f196051f SS |
6325 | if (!part_of_multiple && is_tracepoint (b)) |
6326 | { | |
6327 | struct tracepoint *tp = (struct tracepoint *) b; | |
6328 | ||
6329 | if (tp->traceframe_usage) | |
6330 | { | |
6331 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6332 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6333 | ui_out_text (uiout, " bytes\n"); | |
6334 | } | |
6335 | } | |
d3ce09f5 | 6336 | |
9add0f1b | 6337 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6338 | if (!part_of_multiple && l) |
c4093a6a | 6339 | { |
3b31d625 EZ |
6340 | struct cleanup *script_chain; |
6341 | ||
c4093a6a | 6342 | annotate_field (9); |
3b31d625 | 6343 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6344 | print_command_lines (uiout, l, 4); |
3b31d625 | 6345 | do_cleanups (script_chain); |
c4093a6a | 6346 | } |
d24317b4 | 6347 | |
d9b3f62e | 6348 | if (is_tracepoint (b)) |
1042e4c0 | 6349 | { |
d9b3f62e PA |
6350 | struct tracepoint *t = (struct tracepoint *) b; |
6351 | ||
6352 | if (!part_of_multiple && t->pass_count) | |
6353 | { | |
6354 | annotate_field (10); | |
6355 | ui_out_text (uiout, "\tpass count "); | |
6356 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6357 | ui_out_text (uiout, " \n"); | |
6358 | } | |
f2a8bc8a YQ |
6359 | |
6360 | /* Don't display it when tracepoint or tracepoint location is | |
6361 | pending. */ | |
6362 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6363 | { | |
6364 | annotate_field (11); | |
6365 | ||
6366 | if (ui_out_is_mi_like_p (uiout)) | |
6367 | ui_out_field_string (uiout, "installed", | |
6368 | loc->inserted ? "y" : "n"); | |
6369 | else | |
6370 | { | |
6371 | if (loc->inserted) | |
6372 | ui_out_text (uiout, "\t"); | |
6373 | else | |
6374 | ui_out_text (uiout, "\tnot "); | |
6375 | ui_out_text (uiout, "installed on target\n"); | |
6376 | } | |
6377 | } | |
1042e4c0 SS |
6378 | } |
6379 | ||
d24317b4 VP |
6380 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6381 | { | |
3a5c3e22 PA |
6382 | if (is_watchpoint (b)) |
6383 | { | |
6384 | struct watchpoint *w = (struct watchpoint *) b; | |
6385 | ||
6386 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6387 | } | |
6388 | else if (b->addr_string) | |
d24317b4 | 6389 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 6390 | } |
c4093a6a | 6391 | } |
c5aa993b | 6392 | |
0d381245 VP |
6393 | static void |
6394 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6395 | struct bp_location **last_loc, |
6c95b8df | 6396 | int allflag) |
0d381245 | 6397 | { |
8d3788bd | 6398 | struct cleanup *bkpt_chain; |
79a45e25 | 6399 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6400 | |
6401 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6402 | ||
12c5a436 | 6403 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6404 | do_cleanups (bkpt_chain); |
0d381245 VP |
6405 | |
6406 | /* If this breakpoint has custom print function, | |
6407 | it's already printed. Otherwise, print individual | |
6408 | locations, if any. */ | |
6409 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6410 | { | |
4a64f543 MS |
6411 | /* If breakpoint has a single location that is disabled, we |
6412 | print it as if it had several locations, since otherwise it's | |
6413 | hard to represent "breakpoint enabled, location disabled" | |
6414 | situation. | |
6415 | ||
6416 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6417 | internally, that's not a property exposed to user. */ |
0d381245 | 6418 | if (b->loc |
a5606eee | 6419 | && !is_hardware_watchpoint (b) |
8d3788bd | 6420 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6421 | { |
6422 | struct bp_location *loc; | |
6423 | int n = 1; | |
8d3788bd | 6424 | |
0d381245 | 6425 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6426 | { |
6427 | struct cleanup *inner2 = | |
6428 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6429 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6430 | do_cleanups (inner2); | |
6431 | } | |
0d381245 VP |
6432 | } |
6433 | } | |
6434 | } | |
6435 | ||
a6d9a66e UW |
6436 | static int |
6437 | breakpoint_address_bits (struct breakpoint *b) | |
6438 | { | |
6439 | int print_address_bits = 0; | |
6440 | struct bp_location *loc; | |
6441 | ||
6442 | for (loc = b->loc; loc; loc = loc->next) | |
6443 | { | |
c7437ca6 PA |
6444 | int addr_bit; |
6445 | ||
6446 | /* Software watchpoints that aren't watching memory don't have | |
6447 | an address to print. */ | |
6448 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6449 | continue; | |
6450 | ||
6451 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6452 | if (addr_bit > print_address_bits) |
6453 | print_address_bits = addr_bit; | |
6454 | } | |
6455 | ||
6456 | return print_address_bits; | |
6457 | } | |
0d381245 | 6458 | |
c4093a6a JM |
6459 | struct captured_breakpoint_query_args |
6460 | { | |
6461 | int bnum; | |
6462 | }; | |
c5aa993b | 6463 | |
c4093a6a | 6464 | static int |
2b65245e | 6465 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6466 | { |
6467 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6468 | struct breakpoint *b; |
a6d9a66e | 6469 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6470 | |
c4093a6a JM |
6471 | ALL_BREAKPOINTS (b) |
6472 | { | |
6473 | if (args->bnum == b->number) | |
c5aa993b | 6474 | { |
12c5a436 | 6475 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6476 | return GDB_RC_OK; |
c5aa993b | 6477 | } |
c4093a6a JM |
6478 | } |
6479 | return GDB_RC_NONE; | |
6480 | } | |
c5aa993b | 6481 | |
c4093a6a | 6482 | enum gdb_rc |
4a64f543 MS |
6483 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6484 | char **error_message) | |
c4093a6a JM |
6485 | { |
6486 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6487 | |
c4093a6a JM |
6488 | args.bnum = bnum; |
6489 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6490 | an error. */ |
b0b13bb4 DJ |
6491 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6492 | error_message, RETURN_MASK_ALL) < 0) | |
6493 | return GDB_RC_FAIL; | |
6494 | else | |
6495 | return GDB_RC_OK; | |
c4093a6a | 6496 | } |
c5aa993b | 6497 | |
09d682a4 TT |
6498 | /* Return true if this breakpoint was set by the user, false if it is |
6499 | internal or momentary. */ | |
6500 | ||
6501 | int | |
6502 | user_breakpoint_p (struct breakpoint *b) | |
6503 | { | |
46c6471b | 6504 | return b->number > 0; |
09d682a4 TT |
6505 | } |
6506 | ||
7f3b0473 | 6507 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6508 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6509 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6510 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6511 | ones for which it returns non-zero. Return the total number of | |
6512 | breakpoints listed. */ | |
c906108c | 6513 | |
d77f58be | 6514 | static int |
e5a67952 | 6515 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6516 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6517 | { |
52f0bd74 | 6518 | struct breakpoint *b; |
a6d9a66e | 6519 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6520 | int nr_printable_breakpoints; |
3b31d625 | 6521 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6522 | struct value_print_options opts; |
a6d9a66e | 6523 | int print_address_bits = 0; |
269b11a2 | 6524 | int print_type_col_width = 14; |
79a45e25 | 6525 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6526 | |
79a45b7d TT |
6527 | get_user_print_options (&opts); |
6528 | ||
4a64f543 MS |
6529 | /* Compute the number of rows in the table, as well as the size |
6530 | required for address fields. */ | |
7f3b0473 AC |
6531 | nr_printable_breakpoints = 0; |
6532 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6533 | { |
6534 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6535 | if (filter && !filter (b)) | |
6536 | continue; | |
6537 | ||
6538 | /* If we have an "args" string, it is a list of breakpoints to | |
6539 | accept. Skip the others. */ | |
6540 | if (args != NULL && *args != '\0') | |
6541 | { | |
6542 | if (allflag && parse_and_eval_long (args) != b->number) | |
6543 | continue; | |
6544 | if (!allflag && !number_is_in_list (args, b->number)) | |
6545 | continue; | |
6546 | } | |
269b11a2 | 6547 | |
e5a67952 MS |
6548 | if (allflag || user_breakpoint_p (b)) |
6549 | { | |
6550 | int addr_bit, type_len; | |
a6d9a66e | 6551 | |
e5a67952 MS |
6552 | addr_bit = breakpoint_address_bits (b); |
6553 | if (addr_bit > print_address_bits) | |
6554 | print_address_bits = addr_bit; | |
269b11a2 | 6555 | |
e5a67952 MS |
6556 | type_len = strlen (bptype_string (b->type)); |
6557 | if (type_len > print_type_col_width) | |
6558 | print_type_col_width = type_len; | |
6559 | ||
6560 | nr_printable_breakpoints++; | |
6561 | } | |
6562 | } | |
7f3b0473 | 6563 | |
79a45b7d | 6564 | if (opts.addressprint) |
3b31d625 | 6565 | bkpttbl_chain |
3e43a32a MS |
6566 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6567 | nr_printable_breakpoints, | |
3b31d625 | 6568 | "BreakpointTable"); |
8b93c638 | 6569 | else |
3b31d625 | 6570 | bkpttbl_chain |
3e43a32a MS |
6571 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6572 | nr_printable_breakpoints, | |
3b31d625 | 6573 | "BreakpointTable"); |
8b93c638 | 6574 | |
7f3b0473 | 6575 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6576 | annotate_breakpoints_headers (); |
6577 | if (nr_printable_breakpoints > 0) | |
6578 | annotate_field (0); | |
4a64f543 | 6579 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6580 | if (nr_printable_breakpoints > 0) |
6581 | annotate_field (1); | |
269b11a2 | 6582 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6583 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6584 | if (nr_printable_breakpoints > 0) |
6585 | annotate_field (2); | |
4a64f543 | 6586 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6587 | if (nr_printable_breakpoints > 0) |
6588 | annotate_field (3); | |
54e52265 | 6589 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6590 | if (opts.addressprint) |
e5a67952 MS |
6591 | { |
6592 | if (nr_printable_breakpoints > 0) | |
6593 | annotate_field (4); | |
6594 | if (print_address_bits <= 32) | |
6595 | ui_out_table_header (uiout, 10, ui_left, | |
6596 | "addr", "Address"); /* 5 */ | |
6597 | else | |
6598 | ui_out_table_header (uiout, 18, ui_left, | |
6599 | "addr", "Address"); /* 5 */ | |
6600 | } | |
d7faa9e7 AC |
6601 | if (nr_printable_breakpoints > 0) |
6602 | annotate_field (5); | |
6603 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6604 | ui_out_table_body (uiout); | |
6605 | if (nr_printable_breakpoints > 0) | |
6606 | annotate_breakpoints_table (); | |
7f3b0473 | 6607 | |
c4093a6a | 6608 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6609 | { |
6610 | QUIT; | |
6611 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6612 | if (filter && !filter (b)) | |
6613 | continue; | |
6614 | ||
6615 | /* If we have an "args" string, it is a list of breakpoints to | |
6616 | accept. Skip the others. */ | |
6617 | ||
6618 | if (args != NULL && *args != '\0') | |
6619 | { | |
6620 | if (allflag) /* maintenance info breakpoint */ | |
6621 | { | |
6622 | if (parse_and_eval_long (args) != b->number) | |
6623 | continue; | |
6624 | } | |
6625 | else /* all others */ | |
6626 | { | |
6627 | if (!number_is_in_list (args, b->number)) | |
6628 | continue; | |
6629 | } | |
6630 | } | |
6631 | /* We only print out user settable breakpoints unless the | |
6632 | allflag is set. */ | |
6633 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6634 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6635 | } |
6636 | ||
3b31d625 | 6637 | do_cleanups (bkpttbl_chain); |
698384cd | 6638 | |
7f3b0473 | 6639 | if (nr_printable_breakpoints == 0) |
c906108c | 6640 | { |
4a64f543 MS |
6641 | /* If there's a filter, let the caller decide how to report |
6642 | empty list. */ | |
d77f58be SS |
6643 | if (!filter) |
6644 | { | |
e5a67952 | 6645 | if (args == NULL || *args == '\0') |
d77f58be SS |
6646 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6647 | else | |
4a64f543 | 6648 | ui_out_message (uiout, 0, |
e5a67952 MS |
6649 | "No breakpoint or watchpoint matching '%s'.\n", |
6650 | args); | |
d77f58be | 6651 | } |
c906108c SS |
6652 | } |
6653 | else | |
c4093a6a | 6654 | { |
a6d9a66e UW |
6655 | if (last_loc && !server_command) |
6656 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6657 | } |
c906108c | 6658 | |
4a64f543 | 6659 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6660 | there have been breakpoints? */ |
c906108c | 6661 | annotate_breakpoints_table_end (); |
d77f58be SS |
6662 | |
6663 | return nr_printable_breakpoints; | |
c906108c SS |
6664 | } |
6665 | ||
ad443146 SS |
6666 | /* Display the value of default-collect in a way that is generally |
6667 | compatible with the breakpoint list. */ | |
6668 | ||
6669 | static void | |
6670 | default_collect_info (void) | |
6671 | { | |
79a45e25 PA |
6672 | struct ui_out *uiout = current_uiout; |
6673 | ||
ad443146 SS |
6674 | /* If it has no value (which is frequently the case), say nothing; a |
6675 | message like "No default-collect." gets in user's face when it's | |
6676 | not wanted. */ | |
6677 | if (!*default_collect) | |
6678 | return; | |
6679 | ||
6680 | /* The following phrase lines up nicely with per-tracepoint collect | |
6681 | actions. */ | |
6682 | ui_out_text (uiout, "default collect "); | |
6683 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6684 | ui_out_text (uiout, " \n"); | |
6685 | } | |
6686 | ||
c906108c | 6687 | static void |
e5a67952 | 6688 | breakpoints_info (char *args, int from_tty) |
c906108c | 6689 | { |
e5a67952 | 6690 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6691 | |
6692 | default_collect_info (); | |
d77f58be SS |
6693 | } |
6694 | ||
6695 | static void | |
e5a67952 | 6696 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6697 | { |
e5a67952 | 6698 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6699 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6700 | |
6701 | if (num_printed == 0) | |
6702 | { | |
e5a67952 | 6703 | if (args == NULL || *args == '\0') |
d77f58be SS |
6704 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6705 | else | |
e5a67952 | 6706 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6707 | } |
c906108c SS |
6708 | } |
6709 | ||
7a292a7a | 6710 | static void |
e5a67952 | 6711 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6712 | { |
e5a67952 | 6713 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6714 | |
6715 | default_collect_info (); | |
c906108c SS |
6716 | } |
6717 | ||
0d381245 | 6718 | static int |
714835d5 | 6719 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6720 | struct program_space *pspace, |
714835d5 | 6721 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6722 | { |
6723 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6724 | |
0d381245 VP |
6725 | for (; bl; bl = bl->next) |
6726 | { | |
6c95b8df PA |
6727 | if (bl->pspace == pspace |
6728 | && bl->address == pc | |
0d381245 VP |
6729 | && (!overlay_debugging || bl->section == section)) |
6730 | return 1; | |
6731 | } | |
6732 | return 0; | |
6733 | } | |
6734 | ||
672f9b60 | 6735 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6736 | concerns with logical breakpoints, so we match program spaces, not |
6737 | address spaces. */ | |
c906108c SS |
6738 | |
6739 | static void | |
6c95b8df PA |
6740 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6741 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6742 | struct obj_section *section, int thread) |
c906108c | 6743 | { |
52f0bd74 AC |
6744 | int others = 0; |
6745 | struct breakpoint *b; | |
c906108c SS |
6746 | |
6747 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6748 | others += (user_breakpoint_p (b) |
6749 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6750 | if (others > 0) |
6751 | { | |
a3f17187 AC |
6752 | if (others == 1) |
6753 | printf_filtered (_("Note: breakpoint ")); | |
6754 | else /* if (others == ???) */ | |
6755 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6756 | ALL_BREAKPOINTS (b) |
672f9b60 | 6757 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6758 | { |
6759 | others--; | |
6760 | printf_filtered ("%d", b->number); | |
6761 | if (b->thread == -1 && thread != -1) | |
6762 | printf_filtered (" (all threads)"); | |
6763 | else if (b->thread != -1) | |
6764 | printf_filtered (" (thread %d)", b->thread); | |
6765 | printf_filtered ("%s%s ", | |
059fb39f | 6766 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6767 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6768 | ? " (disabled)" |
6769 | : b->enable_state == bp_permanent | |
6770 | ? " (permanent)" | |
6771 | : ""), | |
6772 | (others > 1) ? "," | |
6773 | : ((others == 1) ? " and" : "")); | |
6774 | } | |
a3f17187 | 6775 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6776 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6777 | printf_filtered (".\n"); |
6778 | } | |
6779 | } | |
6780 | \f | |
c906108c | 6781 | |
e4f237da KB |
6782 | /* Return true iff it is meaningful to use the address member of |
6783 | BPT. For some breakpoint types, the address member is irrelevant | |
6784 | and it makes no sense to attempt to compare it to other addresses | |
6785 | (or use it for any other purpose either). | |
6786 | ||
4a64f543 MS |
6787 | More specifically, each of the following breakpoint types will |
6788 | always have a zero valued address and we don't want to mark | |
6789 | breakpoints of any of these types to be a duplicate of an actual | |
6790 | breakpoint at address zero: | |
e4f237da KB |
6791 | |
6792 | bp_watchpoint | |
2d134ed3 PA |
6793 | bp_catchpoint |
6794 | ||
6795 | */ | |
e4f237da KB |
6796 | |
6797 | static int | |
6798 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6799 | { | |
6800 | enum bptype type = bpt->type; | |
6801 | ||
2d134ed3 PA |
6802 | return (type != bp_watchpoint && type != bp_catchpoint); |
6803 | } | |
6804 | ||
6805 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6806 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6807 | ||
6808 | static int | |
4a64f543 MS |
6809 | watchpoint_locations_match (struct bp_location *loc1, |
6810 | struct bp_location *loc2) | |
2d134ed3 | 6811 | { |
3a5c3e22 PA |
6812 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6813 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6814 | ||
6815 | /* Both of them must exist. */ | |
6816 | gdb_assert (w1 != NULL); | |
6817 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6818 | |
4a64f543 MS |
6819 | /* If the target can evaluate the condition expression in hardware, |
6820 | then we we need to insert both watchpoints even if they are at | |
6821 | the same place. Otherwise the watchpoint will only trigger when | |
6822 | the condition of whichever watchpoint was inserted evaluates to | |
6823 | true, not giving a chance for GDB to check the condition of the | |
6824 | other watchpoint. */ | |
3a5c3e22 | 6825 | if ((w1->cond_exp |
4a64f543 MS |
6826 | && target_can_accel_watchpoint_condition (loc1->address, |
6827 | loc1->length, | |
0cf6dd15 | 6828 | loc1->watchpoint_type, |
3a5c3e22 PA |
6829 | w1->cond_exp)) |
6830 | || (w2->cond_exp | |
4a64f543 MS |
6831 | && target_can_accel_watchpoint_condition (loc2->address, |
6832 | loc2->length, | |
0cf6dd15 | 6833 | loc2->watchpoint_type, |
3a5c3e22 | 6834 | w2->cond_exp))) |
0cf6dd15 TJB |
6835 | return 0; |
6836 | ||
85d721b8 PA |
6837 | /* Note that this checks the owner's type, not the location's. In |
6838 | case the target does not support read watchpoints, but does | |
6839 | support access watchpoints, we'll have bp_read_watchpoint | |
6840 | watchpoints with hw_access locations. Those should be considered | |
6841 | duplicates of hw_read locations. The hw_read locations will | |
6842 | become hw_access locations later. */ | |
2d134ed3 PA |
6843 | return (loc1->owner->type == loc2->owner->type |
6844 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6845 | && loc1->address == loc2->address | |
6846 | && loc1->length == loc2->length); | |
e4f237da KB |
6847 | } |
6848 | ||
31e77af2 | 6849 | /* See breakpoint.h. */ |
6c95b8df | 6850 | |
31e77af2 | 6851 | int |
6c95b8df PA |
6852 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, |
6853 | struct address_space *aspace2, CORE_ADDR addr2) | |
6854 | { | |
f5656ead | 6855 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6856 | || aspace1 == aspace2) |
6857 | && addr1 == addr2); | |
6858 | } | |
6859 | ||
f1310107 TJB |
6860 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6861 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6862 | matches ASPACE2. On targets that have global breakpoints, the address | |
6863 | space doesn't really matter. */ | |
6864 | ||
6865 | static int | |
6866 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6867 | int len1, struct address_space *aspace2, | |
6868 | CORE_ADDR addr2) | |
6869 | { | |
f5656ead | 6870 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6871 | || aspace1 == aspace2) |
6872 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6873 | } | |
6874 | ||
6875 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6876 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6877 | matches the breakpoint's address space. On targets that have global | |
6878 | breakpoints, the address space doesn't really matter. */ | |
6879 | ||
6880 | static int | |
6881 | breakpoint_location_address_match (struct bp_location *bl, | |
6882 | struct address_space *aspace, | |
6883 | CORE_ADDR addr) | |
6884 | { | |
6885 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6886 | aspace, addr) | |
6887 | || (bl->length | |
6888 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6889 | bl->address, bl->length, | |
6890 | aspace, addr))); | |
6891 | } | |
6892 | ||
1e4d1764 YQ |
6893 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6894 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6895 | true, otherwise returns false. */ | |
6896 | ||
6897 | static int | |
6898 | tracepoint_locations_match (struct bp_location *loc1, | |
6899 | struct bp_location *loc2) | |
6900 | { | |
6901 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6902 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6903 | locations at the same address of different tracepoints are regarded as | |
6904 | different locations. */ | |
6905 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6906 | else | |
6907 | return 0; | |
6908 | } | |
6909 | ||
2d134ed3 PA |
6910 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6911 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6912 | represent the same location. */ | |
6913 | ||
6914 | static int | |
4a64f543 MS |
6915 | breakpoint_locations_match (struct bp_location *loc1, |
6916 | struct bp_location *loc2) | |
2d134ed3 | 6917 | { |
2bdf28a0 JK |
6918 | int hw_point1, hw_point2; |
6919 | ||
6920 | /* Both of them must not be in moribund_locations. */ | |
6921 | gdb_assert (loc1->owner != NULL); | |
6922 | gdb_assert (loc2->owner != NULL); | |
6923 | ||
6924 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6925 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6926 | |
6927 | if (hw_point1 != hw_point2) | |
6928 | return 0; | |
6929 | else if (hw_point1) | |
6930 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6931 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6932 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6933 | else |
f1310107 TJB |
6934 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6935 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6936 | loc2->pspace->aspace, loc2->address) | |
6937 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6938 | } |
6939 | ||
76897487 KB |
6940 | static void |
6941 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6942 | int bnum, int have_bnum) | |
6943 | { | |
f63fbe86 MS |
6944 | /* The longest string possibly returned by hex_string_custom |
6945 | is 50 chars. These must be at least that big for safety. */ | |
6946 | char astr1[64]; | |
6947 | char astr2[64]; | |
76897487 | 6948 | |
bb599908 PH |
6949 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6950 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6951 | if (have_bnum) |
8a3fe4f8 | 6952 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6953 | bnum, astr1, astr2); |
6954 | else | |
8a3fe4f8 | 6955 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6956 | } |
6957 | ||
4a64f543 MS |
6958 | /* Adjust a breakpoint's address to account for architectural |
6959 | constraints on breakpoint placement. Return the adjusted address. | |
6960 | Note: Very few targets require this kind of adjustment. For most | |
6961 | targets, this function is simply the identity function. */ | |
76897487 KB |
6962 | |
6963 | static CORE_ADDR | |
a6d9a66e UW |
6964 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6965 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6966 | { |
a6d9a66e | 6967 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6968 | { |
6969 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6970 | return bpaddr; | |
6971 | } | |
88f7da05 KB |
6972 | else if (bptype == bp_watchpoint |
6973 | || bptype == bp_hardware_watchpoint | |
6974 | || bptype == bp_read_watchpoint | |
6975 | || bptype == bp_access_watchpoint | |
fe798b75 | 6976 | || bptype == bp_catchpoint) |
88f7da05 KB |
6977 | { |
6978 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6979 | have their addresses modified. */ | |
6980 | return bpaddr; | |
6981 | } | |
76897487 KB |
6982 | else |
6983 | { | |
6984 | CORE_ADDR adjusted_bpaddr; | |
6985 | ||
6986 | /* Some targets have architectural constraints on the placement | |
6987 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 6988 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
6989 | |
6990 | /* An adjusted breakpoint address can significantly alter | |
6991 | a user's expectations. Print a warning if an adjustment | |
6992 | is required. */ | |
6993 | if (adjusted_bpaddr != bpaddr) | |
6994 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6995 | ||
6996 | return adjusted_bpaddr; | |
6997 | } | |
6998 | } | |
6999 | ||
28010a5d PA |
7000 | void |
7001 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
7002 | struct breakpoint *owner) | |
7cc221ef | 7003 | { |
7cc221ef DJ |
7004 | memset (loc, 0, sizeof (*loc)); |
7005 | ||
348d480f PA |
7006 | gdb_assert (ops != NULL); |
7007 | ||
28010a5d PA |
7008 | loc->ops = ops; |
7009 | loc->owner = owner; | |
511a6cd4 | 7010 | loc->cond = NULL; |
b775012e | 7011 | loc->cond_bytecode = NULL; |
0d381245 VP |
7012 | loc->shlib_disabled = 0; |
7013 | loc->enabled = 1; | |
e049a4b5 | 7014 | |
28010a5d | 7015 | switch (owner->type) |
e049a4b5 DJ |
7016 | { |
7017 | case bp_breakpoint: | |
7018 | case bp_until: | |
7019 | case bp_finish: | |
7020 | case bp_longjmp: | |
7021 | case bp_longjmp_resume: | |
e2e4d78b | 7022 | case bp_longjmp_call_dummy: |
186c406b TT |
7023 | case bp_exception: |
7024 | case bp_exception_resume: | |
e049a4b5 | 7025 | case bp_step_resume: |
2c03e5be | 7026 | case bp_hp_step_resume: |
e049a4b5 DJ |
7027 | case bp_watchpoint_scope: |
7028 | case bp_call_dummy: | |
aa7d318d | 7029 | case bp_std_terminate: |
e049a4b5 DJ |
7030 | case bp_shlib_event: |
7031 | case bp_thread_event: | |
7032 | case bp_overlay_event: | |
4efc6507 | 7033 | case bp_jit_event: |
0fd8e87f | 7034 | case bp_longjmp_master: |
aa7d318d | 7035 | case bp_std_terminate_master: |
186c406b | 7036 | case bp_exception_master: |
0e30163f JK |
7037 | case bp_gnu_ifunc_resolver: |
7038 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 7039 | case bp_dprintf: |
e049a4b5 | 7040 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 7041 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7042 | break; |
7043 | case bp_hardware_breakpoint: | |
7044 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 7045 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
7046 | break; |
7047 | case bp_hardware_watchpoint: | |
7048 | case bp_read_watchpoint: | |
7049 | case bp_access_watchpoint: | |
7050 | loc->loc_type = bp_loc_hardware_watchpoint; | |
7051 | break; | |
7052 | case bp_watchpoint: | |
ce78b96d | 7053 | case bp_catchpoint: |
15c3d785 PA |
7054 | case bp_tracepoint: |
7055 | case bp_fast_tracepoint: | |
0fb4aa4b | 7056 | case bp_static_tracepoint: |
e049a4b5 DJ |
7057 | loc->loc_type = bp_loc_other; |
7058 | break; | |
7059 | default: | |
e2e0b3e5 | 7060 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
7061 | } |
7062 | ||
f431efe5 | 7063 | loc->refc = 1; |
28010a5d PA |
7064 | } |
7065 | ||
7066 | /* Allocate a struct bp_location. */ | |
7067 | ||
7068 | static struct bp_location * | |
7069 | allocate_bp_location (struct breakpoint *bpt) | |
7070 | { | |
348d480f PA |
7071 | return bpt->ops->allocate_location (bpt); |
7072 | } | |
7cc221ef | 7073 | |
f431efe5 PA |
7074 | static void |
7075 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 7076 | { |
348d480f | 7077 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
7078 | xfree (loc); |
7079 | } | |
7080 | ||
f431efe5 PA |
7081 | /* Increment reference count. */ |
7082 | ||
7083 | static void | |
7084 | incref_bp_location (struct bp_location *bl) | |
7085 | { | |
7086 | ++bl->refc; | |
7087 | } | |
7088 | ||
7089 | /* Decrement reference count. If the reference count reaches 0, | |
7090 | destroy the bp_location. Sets *BLP to NULL. */ | |
7091 | ||
7092 | static void | |
7093 | decref_bp_location (struct bp_location **blp) | |
7094 | { | |
0807b50c PA |
7095 | gdb_assert ((*blp)->refc > 0); |
7096 | ||
f431efe5 PA |
7097 | if (--(*blp)->refc == 0) |
7098 | free_bp_location (*blp); | |
7099 | *blp = NULL; | |
7100 | } | |
7101 | ||
346774a9 | 7102 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 7103 | |
346774a9 PA |
7104 | static void |
7105 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 7106 | { |
346774a9 | 7107 | struct breakpoint *b1; |
c906108c | 7108 | |
346774a9 PA |
7109 | /* Add this breakpoint to the end of the chain so that a list of |
7110 | breakpoints will come out in order of increasing numbers. */ | |
7111 | ||
7112 | b1 = breakpoint_chain; | |
7113 | if (b1 == 0) | |
7114 | breakpoint_chain = b; | |
7115 | else | |
7116 | { | |
7117 | while (b1->next) | |
7118 | b1 = b1->next; | |
7119 | b1->next = b; | |
7120 | } | |
7121 | } | |
7122 | ||
7123 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
7124 | ||
7125 | static void | |
7126 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
7127 | struct gdbarch *gdbarch, | |
28010a5d | 7128 | enum bptype bptype, |
c0a91b2b | 7129 | const struct breakpoint_ops *ops) |
346774a9 | 7130 | { |
c906108c | 7131 | memset (b, 0, sizeof (*b)); |
2219d63c | 7132 | |
348d480f PA |
7133 | gdb_assert (ops != NULL); |
7134 | ||
28010a5d | 7135 | b->ops = ops; |
4d28f7a8 | 7136 | b->type = bptype; |
a6d9a66e | 7137 | b->gdbarch = gdbarch; |
c906108c SS |
7138 | b->language = current_language->la_language; |
7139 | b->input_radix = input_radix; | |
7140 | b->thread = -1; | |
b5de0fa7 | 7141 | b->enable_state = bp_enabled; |
c906108c SS |
7142 | b->next = 0; |
7143 | b->silent = 0; | |
7144 | b->ignore_count = 0; | |
7145 | b->commands = NULL; | |
818dd999 | 7146 | b->frame_id = null_frame_id; |
0d381245 | 7147 | b->condition_not_parsed = 0; |
84f4c1fe | 7148 | b->py_bp_object = NULL; |
d0fb5eae | 7149 | b->related_breakpoint = b; |
346774a9 PA |
7150 | } |
7151 | ||
7152 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
7153 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
7154 | |
7155 | static struct breakpoint * | |
7156 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 7157 | enum bptype bptype, |
c0a91b2b | 7158 | const struct breakpoint_ops *ops) |
346774a9 PA |
7159 | { |
7160 | struct breakpoint *b = XNEW (struct breakpoint); | |
7161 | ||
348d480f | 7162 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 7163 | add_to_breakpoint_chain (b); |
0d381245 VP |
7164 | return b; |
7165 | } | |
7166 | ||
0e30163f JK |
7167 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
7168 | resolutions should be made as the user specified the location explicitly | |
7169 | enough. */ | |
7170 | ||
0d381245 | 7171 | static void |
0e30163f | 7172 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 7173 | { |
2bdf28a0 JK |
7174 | gdb_assert (loc->owner != NULL); |
7175 | ||
0d381245 | 7176 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 7177 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 7178 | || is_tracepoint (loc->owner)) |
0d381245 | 7179 | { |
0e30163f | 7180 | int is_gnu_ifunc; |
2c02bd72 | 7181 | const char *function_name; |
6a3a010b | 7182 | CORE_ADDR func_addr; |
0e30163f | 7183 | |
2c02bd72 | 7184 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7185 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7186 | |
7187 | if (is_gnu_ifunc && !explicit_loc) | |
7188 | { | |
7189 | struct breakpoint *b = loc->owner; | |
7190 | ||
7191 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7192 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7193 | &loc->requested_address)) |
7194 | { | |
7195 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7196 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7197 | loc->requested_address, | |
7198 | b->type); | |
7199 | } | |
7200 | else if (b->type == bp_breakpoint && b->loc == loc | |
7201 | && loc->next == NULL && b->related_breakpoint == b) | |
7202 | { | |
7203 | /* Create only the whole new breakpoint of this type but do not | |
7204 | mess more complicated breakpoints with multiple locations. */ | |
7205 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7206 | /* Remember the resolver's address for use by the return |
7207 | breakpoint. */ | |
7208 | loc->related_address = func_addr; | |
0e30163f JK |
7209 | } |
7210 | } | |
7211 | ||
2c02bd72 DE |
7212 | if (function_name) |
7213 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7214 | } |
7215 | } | |
7216 | ||
a6d9a66e | 7217 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7218 | struct gdbarch * |
a6d9a66e UW |
7219 | get_sal_arch (struct symtab_and_line sal) |
7220 | { | |
7221 | if (sal.section) | |
7222 | return get_objfile_arch (sal.section->objfile); | |
7223 | if (sal.symtab) | |
7224 | return get_objfile_arch (sal.symtab->objfile); | |
7225 | ||
7226 | return NULL; | |
7227 | } | |
7228 | ||
346774a9 PA |
7229 | /* Low level routine for partially initializing a breakpoint of type |
7230 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7231 | file name, and line number are provided by SAL. |
0d381245 VP |
7232 | |
7233 | It is expected that the caller will complete the initialization of | |
7234 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7235 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7236 | |
346774a9 PA |
7237 | static void |
7238 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7239 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7240 | const struct breakpoint_ops *ops) |
0d381245 | 7241 | { |
28010a5d | 7242 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7243 | |
3742cc8b | 7244 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7245 | |
6c95b8df PA |
7246 | if (bptype != bp_catchpoint) |
7247 | gdb_assert (sal.pspace != NULL); | |
7248 | ||
f8eba3c6 TT |
7249 | /* Store the program space that was used to set the breakpoint, |
7250 | except for ordinary breakpoints, which are independent of the | |
7251 | program space. */ | |
7252 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7253 | b->pspace = sal.pspace; | |
346774a9 | 7254 | } |
c906108c | 7255 | |
346774a9 PA |
7256 | /* set_raw_breakpoint is a low level routine for allocating and |
7257 | partially initializing a breakpoint of type BPTYPE. The newly | |
7258 | created breakpoint's address, section, source file name, and line | |
7259 | number are provided by SAL. The newly created and partially | |
7260 | initialized breakpoint is added to the breakpoint chain and | |
7261 | is also returned as the value of this function. | |
7262 | ||
7263 | It is expected that the caller will complete the initialization of | |
7264 | the newly created breakpoint struct as well as output any status | |
7265 | information regarding the creation of a new breakpoint. In | |
7266 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7267 | number! Care should be taken to not allow an error to occur | |
7268 | prior to completing the initialization of the breakpoint. If this | |
7269 | should happen, a bogus breakpoint will be left on the chain. */ | |
7270 | ||
7271 | struct breakpoint * | |
7272 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7273 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7274 | const struct breakpoint_ops *ops) |
346774a9 PA |
7275 | { |
7276 | struct breakpoint *b = XNEW (struct breakpoint); | |
7277 | ||
348d480f | 7278 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7279 | add_to_breakpoint_chain (b); |
c906108c SS |
7280 | return b; |
7281 | } | |
7282 | ||
c2c6d25f JM |
7283 | |
7284 | /* Note that the breakpoint object B describes a permanent breakpoint | |
7285 | instruction, hard-wired into the inferior's code. */ | |
7286 | void | |
7287 | make_breakpoint_permanent (struct breakpoint *b) | |
7288 | { | |
0d381245 | 7289 | struct bp_location *bl; |
cc59ec59 | 7290 | |
b5de0fa7 | 7291 | b->enable_state = bp_permanent; |
c2c6d25f | 7292 | |
4a64f543 MS |
7293 | /* By definition, permanent breakpoints are already present in the |
7294 | code. Mark all locations as inserted. For now, | |
7295 | make_breakpoint_permanent is called in just one place, so it's | |
7296 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 7297 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
7298 | for (bl = b->loc; bl; bl = bl->next) |
7299 | bl->inserted = 1; | |
c2c6d25f JM |
7300 | } |
7301 | ||
53a5351d | 7302 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7303 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7304 | initiated the operation. */ | |
c906108c SS |
7305 | |
7306 | void | |
186c406b | 7307 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7308 | { |
35df4500 | 7309 | struct breakpoint *b, *b_tmp; |
186c406b | 7310 | int thread = tp->num; |
0fd8e87f UW |
7311 | |
7312 | /* To avoid having to rescan all objfile symbols at every step, | |
7313 | we maintain a list of continually-inserted but always disabled | |
7314 | longjmp "master" breakpoints. Here, we simply create momentary | |
7315 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7316 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7317 | if (b->pspace == current_program_space |
186c406b TT |
7318 | && (b->type == bp_longjmp_master |
7319 | || b->type == bp_exception_master)) | |
0fd8e87f | 7320 | { |
06edf0c0 PA |
7321 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7322 | struct breakpoint *clone; | |
cc59ec59 | 7323 | |
e2e4d78b JK |
7324 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7325 | after their removal. */ | |
06edf0c0 | 7326 | clone = momentary_breakpoint_from_master (b, type, |
e2e4d78b | 7327 | &longjmp_breakpoint_ops); |
0fd8e87f UW |
7328 | clone->thread = thread; |
7329 | } | |
186c406b TT |
7330 | |
7331 | tp->initiating_frame = frame; | |
c906108c SS |
7332 | } |
7333 | ||
611c83ae | 7334 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7335 | void |
611c83ae | 7336 | delete_longjmp_breakpoint (int thread) |
c906108c | 7337 | { |
35df4500 | 7338 | struct breakpoint *b, *b_tmp; |
c906108c | 7339 | |
35df4500 | 7340 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7341 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7342 | { |
7343 | if (b->thread == thread) | |
7344 | delete_breakpoint (b); | |
7345 | } | |
c906108c SS |
7346 | } |
7347 | ||
f59f708a PA |
7348 | void |
7349 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7350 | { | |
7351 | struct breakpoint *b, *b_tmp; | |
7352 | ||
7353 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7354 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7355 | { | |
7356 | if (b->thread == thread) | |
7357 | b->disposition = disp_del_at_next_stop; | |
7358 | } | |
7359 | } | |
7360 | ||
e2e4d78b JK |
7361 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7362 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7363 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7364 | breakpoints. */ | |
7365 | ||
7366 | struct breakpoint * | |
7367 | set_longjmp_breakpoint_for_call_dummy (void) | |
7368 | { | |
7369 | struct breakpoint *b, *retval = NULL; | |
7370 | ||
7371 | ALL_BREAKPOINTS (b) | |
7372 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7373 | { | |
7374 | struct breakpoint *new_b; | |
7375 | ||
7376 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7377 | &momentary_breakpoint_ops); | |
7378 | new_b->thread = pid_to_thread_id (inferior_ptid); | |
7379 | ||
7380 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7381 | ||
7382 | gdb_assert (new_b->related_breakpoint == new_b); | |
7383 | if (retval == NULL) | |
7384 | retval = new_b; | |
7385 | new_b->related_breakpoint = retval; | |
7386 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7387 | retval = retval->related_breakpoint; | |
7388 | retval->related_breakpoint = new_b; | |
7389 | } | |
7390 | ||
7391 | return retval; | |
7392 | } | |
7393 | ||
7394 | /* Verify all existing dummy frames and their associated breakpoints for | |
7395 | THREAD. Remove those which can no longer be found in the current frame | |
7396 | stack. | |
7397 | ||
7398 | You should call this function only at places where it is safe to currently | |
7399 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7400 | frames. */ | |
7401 | ||
7402 | void | |
7403 | check_longjmp_breakpoint_for_call_dummy (int thread) | |
7404 | { | |
7405 | struct breakpoint *b, *b_tmp; | |
7406 | ||
7407 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7408 | if (b->type == bp_longjmp_call_dummy && b->thread == thread) | |
7409 | { | |
7410 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7411 | ||
7412 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7413 | dummy_b = dummy_b->related_breakpoint; | |
7414 | if (dummy_b->type != bp_call_dummy | |
7415 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7416 | continue; | |
7417 | ||
7418 | dummy_frame_discard (dummy_b->frame_id); | |
7419 | ||
7420 | while (b->related_breakpoint != b) | |
7421 | { | |
7422 | if (b_tmp == b->related_breakpoint) | |
7423 | b_tmp = b->related_breakpoint->next; | |
7424 | delete_breakpoint (b->related_breakpoint); | |
7425 | } | |
7426 | delete_breakpoint (b); | |
7427 | } | |
7428 | } | |
7429 | ||
1900040c MS |
7430 | void |
7431 | enable_overlay_breakpoints (void) | |
7432 | { | |
52f0bd74 | 7433 | struct breakpoint *b; |
1900040c MS |
7434 | |
7435 | ALL_BREAKPOINTS (b) | |
7436 | if (b->type == bp_overlay_event) | |
7437 | { | |
7438 | b->enable_state = bp_enabled; | |
b60e7edf | 7439 | update_global_location_list (1); |
c02f5703 | 7440 | overlay_events_enabled = 1; |
1900040c MS |
7441 | } |
7442 | } | |
7443 | ||
7444 | void | |
7445 | disable_overlay_breakpoints (void) | |
7446 | { | |
52f0bd74 | 7447 | struct breakpoint *b; |
1900040c MS |
7448 | |
7449 | ALL_BREAKPOINTS (b) | |
7450 | if (b->type == bp_overlay_event) | |
7451 | { | |
7452 | b->enable_state = bp_disabled; | |
b60e7edf | 7453 | update_global_location_list (0); |
c02f5703 | 7454 | overlay_events_enabled = 0; |
1900040c MS |
7455 | } |
7456 | } | |
7457 | ||
aa7d318d TT |
7458 | /* Set an active std::terminate breakpoint for each std::terminate |
7459 | master breakpoint. */ | |
7460 | void | |
7461 | set_std_terminate_breakpoint (void) | |
7462 | { | |
35df4500 | 7463 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7464 | |
35df4500 | 7465 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7466 | if (b->pspace == current_program_space |
7467 | && b->type == bp_std_terminate_master) | |
7468 | { | |
06edf0c0 PA |
7469 | momentary_breakpoint_from_master (b, bp_std_terminate, |
7470 | &momentary_breakpoint_ops); | |
aa7d318d TT |
7471 | } |
7472 | } | |
7473 | ||
7474 | /* Delete all the std::terminate breakpoints. */ | |
7475 | void | |
7476 | delete_std_terminate_breakpoint (void) | |
7477 | { | |
35df4500 | 7478 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7479 | |
35df4500 | 7480 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7481 | if (b->type == bp_std_terminate) |
7482 | delete_breakpoint (b); | |
7483 | } | |
7484 | ||
c4093a6a | 7485 | struct breakpoint * |
a6d9a66e | 7486 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7487 | { |
7488 | struct breakpoint *b; | |
c4093a6a | 7489 | |
06edf0c0 PA |
7490 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7491 | &internal_breakpoint_ops); | |
7492 | ||
b5de0fa7 | 7493 | b->enable_state = bp_enabled; |
c4093a6a | 7494 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
7495 | b->addr_string |
7496 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 7497 | |
b60e7edf | 7498 | update_global_location_list_nothrow (1); |
74960c60 | 7499 | |
c4093a6a JM |
7500 | return b; |
7501 | } | |
7502 | ||
7503 | void | |
7504 | remove_thread_event_breakpoints (void) | |
7505 | { | |
35df4500 | 7506 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7507 | |
35df4500 | 7508 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7509 | if (b->type == bp_thread_event |
7510 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7511 | delete_breakpoint (b); |
7512 | } | |
7513 | ||
0101ce28 JJ |
7514 | struct lang_and_radix |
7515 | { | |
7516 | enum language lang; | |
7517 | int radix; | |
7518 | }; | |
7519 | ||
4efc6507 DE |
7520 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7521 | ||
7522 | struct breakpoint * | |
7523 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7524 | { | |
7525 | struct breakpoint *b; | |
7526 | ||
06edf0c0 PA |
7527 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7528 | &internal_breakpoint_ops); | |
4efc6507 DE |
7529 | update_global_location_list_nothrow (1); |
7530 | return b; | |
7531 | } | |
0101ce28 | 7532 | |
03673fc7 PP |
7533 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7534 | ||
7535 | void | |
7536 | remove_jit_event_breakpoints (void) | |
7537 | { | |
7538 | struct breakpoint *b, *b_tmp; | |
7539 | ||
7540 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7541 | if (b->type == bp_jit_event | |
7542 | && b->loc->pspace == current_program_space) | |
7543 | delete_breakpoint (b); | |
7544 | } | |
7545 | ||
cae688ec JJ |
7546 | void |
7547 | remove_solib_event_breakpoints (void) | |
7548 | { | |
35df4500 | 7549 | struct breakpoint *b, *b_tmp; |
cae688ec | 7550 | |
35df4500 | 7551 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7552 | if (b->type == bp_shlib_event |
7553 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7554 | delete_breakpoint (b); |
7555 | } | |
7556 | ||
7557 | struct breakpoint * | |
a6d9a66e | 7558 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
7559 | { |
7560 | struct breakpoint *b; | |
7561 | ||
06edf0c0 PA |
7562 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7563 | &internal_breakpoint_ops); | |
b60e7edf | 7564 | update_global_location_list_nothrow (1); |
cae688ec JJ |
7565 | return b; |
7566 | } | |
7567 | ||
7568 | /* Disable any breakpoints that are on code in shared libraries. Only | |
7569 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7570 | ||
7571 | void | |
cb851954 | 7572 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7573 | { |
876fa593 | 7574 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7575 | |
876fa593 | 7576 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7577 | { |
2bdf28a0 | 7578 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7579 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7580 | |
4a64f543 MS |
7581 | /* We apply the check to all breakpoints, including disabled for |
7582 | those with loc->duplicate set. This is so that when breakpoint | |
7583 | becomes enabled, or the duplicate is removed, gdb will try to | |
7584 | insert all breakpoints. If we don't set shlib_disabled here, | |
7585 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7586 | if (((b->type == bp_breakpoint) |
508ccb1f | 7587 | || (b->type == bp_jit_event) |
1042e4c0 | 7588 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7589 | || (is_tracepoint (b))) |
6c95b8df | 7590 | && loc->pspace == current_program_space |
0d381245 | 7591 | && !loc->shlib_disabled |
6c95b8df | 7592 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7593 | ) |
0d381245 VP |
7594 | { |
7595 | loc->shlib_disabled = 1; | |
7596 | } | |
cae688ec JJ |
7597 | } |
7598 | } | |
7599 | ||
63644780 NB |
7600 | /* Disable any breakpoints and tracepoints that are in SOLIB upon |
7601 | notification of unloaded_shlib. Only apply to enabled breakpoints, | |
7602 | disabled ones can just stay disabled. */ | |
84acb35a | 7603 | |
75149521 | 7604 | static void |
84acb35a JJ |
7605 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7606 | { | |
876fa593 | 7607 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7608 | int disabled_shlib_breaks = 0; |
7609 | ||
c86cf029 VP |
7610 | /* SunOS a.out shared libraries are always mapped, so do not |
7611 | disable breakpoints; they will only be reported as unloaded | |
7612 | through clear_solib when GDB discards its shared library | |
7613 | list. See clear_solib for more information. */ | |
7614 | if (exec_bfd != NULL | |
7615 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7616 | return; | |
7617 | ||
876fa593 | 7618 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7619 | { |
2bdf28a0 | 7620 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7621 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7622 | |
1e4d1764 | 7623 | if (solib->pspace == loc->pspace |
e2dd7057 | 7624 | && !loc->shlib_disabled |
1e4d1764 YQ |
7625 | && (((b->type == bp_breakpoint |
7626 | || b->type == bp_jit_event | |
7627 | || b->type == bp_hardware_breakpoint) | |
7628 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7629 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7630 | || is_tracepoint (b)) | |
e2dd7057 | 7631 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7632 | { |
e2dd7057 PP |
7633 | loc->shlib_disabled = 1; |
7634 | /* At this point, we cannot rely on remove_breakpoint | |
7635 | succeeding so we must mark the breakpoint as not inserted | |
7636 | to prevent future errors occurring in remove_breakpoints. */ | |
7637 | loc->inserted = 0; | |
8d3788bd VP |
7638 | |
7639 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7640 | observer_notify_breakpoint_modified (b); | |
7641 | ||
e2dd7057 PP |
7642 | if (!disabled_shlib_breaks) |
7643 | { | |
7644 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7645 | warning (_("Temporarily disabling breakpoints " |
7646 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7647 | solib->so_name); |
84acb35a | 7648 | } |
e2dd7057 | 7649 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7650 | } |
7651 | } | |
84acb35a JJ |
7652 | } |
7653 | ||
63644780 NB |
7654 | /* Disable any breakpoints and tracepoints in OBJFILE upon |
7655 | notification of free_objfile. Only apply to enabled breakpoints, | |
7656 | disabled ones can just stay disabled. */ | |
7657 | ||
7658 | static void | |
7659 | disable_breakpoints_in_freed_objfile (struct objfile *objfile) | |
7660 | { | |
7661 | struct breakpoint *b; | |
7662 | ||
7663 | if (objfile == NULL) | |
7664 | return; | |
7665 | ||
7666 | /* If the file is a shared library not loaded by the user then | |
7667 | solib_unloaded was notified and disable_breakpoints_in_unloaded_shlib | |
7668 | was called. In that case there is no need to take action again. */ | |
7669 | if ((objfile->flags & OBJF_SHARED) && !(objfile->flags & OBJF_USERLOADED)) | |
7670 | return; | |
7671 | ||
7672 | ALL_BREAKPOINTS (b) | |
7673 | { | |
7674 | struct bp_location *loc; | |
7675 | int bp_modified = 0; | |
7676 | ||
7677 | if (!is_breakpoint (b) && !is_tracepoint (b)) | |
7678 | continue; | |
7679 | ||
7680 | for (loc = b->loc; loc != NULL; loc = loc->next) | |
7681 | { | |
7682 | CORE_ADDR loc_addr = loc->address; | |
7683 | ||
7684 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7685 | && loc->loc_type != bp_loc_software_breakpoint) | |
7686 | continue; | |
7687 | ||
7688 | if (loc->shlib_disabled != 0) | |
7689 | continue; | |
7690 | ||
7691 | if (objfile->pspace != loc->pspace) | |
7692 | continue; | |
7693 | ||
7694 | if (loc->loc_type != bp_loc_hardware_breakpoint | |
7695 | && loc->loc_type != bp_loc_software_breakpoint) | |
7696 | continue; | |
7697 | ||
7698 | if (is_addr_in_objfile (loc_addr, objfile)) | |
7699 | { | |
7700 | loc->shlib_disabled = 1; | |
7701 | loc->inserted = 0; | |
7702 | ||
7703 | mark_breakpoint_location_modified (loc); | |
7704 | ||
7705 | bp_modified = 1; | |
7706 | } | |
7707 | } | |
7708 | ||
7709 | if (bp_modified) | |
7710 | observer_notify_breakpoint_modified (b); | |
7711 | } | |
7712 | } | |
7713 | ||
ce78b96d JB |
7714 | /* FORK & VFORK catchpoints. */ |
7715 | ||
e29a4733 PA |
7716 | /* An instance of this type is used to represent a fork or vfork |
7717 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7718 | class; users downcast to "struct breakpoint *" when needed. A | |
7719 | breakpoint is really of this type iff its ops pointer points to | |
7720 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7721 | ||
7722 | struct fork_catchpoint | |
7723 | { | |
7724 | /* The base class. */ | |
7725 | struct breakpoint base; | |
7726 | ||
7727 | /* Process id of a child process whose forking triggered this | |
7728 | catchpoint. This field is only valid immediately after this | |
7729 | catchpoint has triggered. */ | |
7730 | ptid_t forked_inferior_pid; | |
7731 | }; | |
7732 | ||
4a64f543 MS |
7733 | /* Implement the "insert" breakpoint_ops method for fork |
7734 | catchpoints. */ | |
ce78b96d | 7735 | |
77b06cd7 TJB |
7736 | static int |
7737 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7738 | { |
dfd4cc63 | 7739 | return target_insert_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7740 | } |
7741 | ||
4a64f543 MS |
7742 | /* Implement the "remove" breakpoint_ops method for fork |
7743 | catchpoints. */ | |
ce78b96d JB |
7744 | |
7745 | static int | |
77b06cd7 | 7746 | remove_catch_fork (struct bp_location *bl) |
ce78b96d | 7747 | { |
dfd4cc63 | 7748 | return target_remove_fork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7749 | } |
7750 | ||
7751 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7752 | catchpoints. */ | |
7753 | ||
7754 | static int | |
f1310107 | 7755 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7756 | struct address_space *aspace, CORE_ADDR bp_addr, |
7757 | const struct target_waitstatus *ws) | |
ce78b96d | 7758 | { |
e29a4733 PA |
7759 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7760 | ||
f90263c1 TT |
7761 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7762 | return 0; | |
7763 | ||
7764 | c->forked_inferior_pid = ws->value.related_pid; | |
7765 | return 1; | |
ce78b96d JB |
7766 | } |
7767 | ||
4a64f543 MS |
7768 | /* Implement the "print_it" breakpoint_ops method for fork |
7769 | catchpoints. */ | |
ce78b96d JB |
7770 | |
7771 | static enum print_stop_action | |
348d480f | 7772 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7773 | { |
36dfb11c | 7774 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7775 | struct breakpoint *b = bs->breakpoint_at; |
7776 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7777 | |
ce78b96d | 7778 | annotate_catchpoint (b->number); |
36dfb11c TT |
7779 | if (b->disposition == disp_del) |
7780 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7781 | else | |
7782 | ui_out_text (uiout, "\nCatchpoint "); | |
7783 | if (ui_out_is_mi_like_p (uiout)) | |
7784 | { | |
7785 | ui_out_field_string (uiout, "reason", | |
7786 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7787 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7788 | } | |
7789 | ui_out_field_int (uiout, "bkptno", b->number); | |
7790 | ui_out_text (uiout, " (forked process "); | |
7791 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7792 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7793 | return PRINT_SRC_AND_LOC; |
7794 | } | |
7795 | ||
4a64f543 MS |
7796 | /* Implement the "print_one" breakpoint_ops method for fork |
7797 | catchpoints. */ | |
ce78b96d JB |
7798 | |
7799 | static void | |
a6d9a66e | 7800 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7801 | { |
e29a4733 | 7802 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7803 | struct value_print_options opts; |
79a45e25 | 7804 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7805 | |
7806 | get_user_print_options (&opts); | |
7807 | ||
4a64f543 MS |
7808 | /* Field 4, the address, is omitted (which makes the columns not |
7809 | line up too nicely with the headers, but the effect is relatively | |
7810 | readable). */ | |
79a45b7d | 7811 | if (opts.addressprint) |
ce78b96d JB |
7812 | ui_out_field_skip (uiout, "addr"); |
7813 | annotate_field (5); | |
7814 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7815 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7816 | { |
7817 | ui_out_text (uiout, ", process "); | |
7818 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7819 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7820 | ui_out_spaces (uiout, 1); |
7821 | } | |
8ac3646f TT |
7822 | |
7823 | if (ui_out_is_mi_like_p (uiout)) | |
7824 | ui_out_field_string (uiout, "catch-type", "fork"); | |
ce78b96d JB |
7825 | } |
7826 | ||
7827 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7828 | catchpoints. */ | |
7829 | ||
7830 | static void | |
7831 | print_mention_catch_fork (struct breakpoint *b) | |
7832 | { | |
7833 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7834 | } | |
7835 | ||
6149aea9 PA |
7836 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7837 | catchpoints. */ | |
7838 | ||
7839 | static void | |
7840 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7841 | { | |
7842 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7843 | print_recreate_thread (b, fp); |
6149aea9 PA |
7844 | } |
7845 | ||
ce78b96d JB |
7846 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7847 | ||
2060206e | 7848 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7849 | |
4a64f543 MS |
7850 | /* Implement the "insert" breakpoint_ops method for vfork |
7851 | catchpoints. */ | |
ce78b96d | 7852 | |
77b06cd7 TJB |
7853 | static int |
7854 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7855 | { |
dfd4cc63 | 7856 | return target_insert_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7857 | } |
7858 | ||
4a64f543 MS |
7859 | /* Implement the "remove" breakpoint_ops method for vfork |
7860 | catchpoints. */ | |
ce78b96d JB |
7861 | |
7862 | static int | |
77b06cd7 | 7863 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d | 7864 | { |
dfd4cc63 | 7865 | return target_remove_vfork_catchpoint (ptid_get_pid (inferior_ptid)); |
ce78b96d JB |
7866 | } |
7867 | ||
7868 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7869 | catchpoints. */ | |
7870 | ||
7871 | static int | |
f1310107 | 7872 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7873 | struct address_space *aspace, CORE_ADDR bp_addr, |
7874 | const struct target_waitstatus *ws) | |
ce78b96d | 7875 | { |
e29a4733 PA |
7876 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7877 | ||
f90263c1 TT |
7878 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7879 | return 0; | |
7880 | ||
7881 | c->forked_inferior_pid = ws->value.related_pid; | |
7882 | return 1; | |
ce78b96d JB |
7883 | } |
7884 | ||
4a64f543 MS |
7885 | /* Implement the "print_it" breakpoint_ops method for vfork |
7886 | catchpoints. */ | |
ce78b96d JB |
7887 | |
7888 | static enum print_stop_action | |
348d480f | 7889 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7890 | { |
36dfb11c | 7891 | struct ui_out *uiout = current_uiout; |
348d480f | 7892 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7893 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7894 | ||
ce78b96d | 7895 | annotate_catchpoint (b->number); |
36dfb11c TT |
7896 | if (b->disposition == disp_del) |
7897 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7898 | else | |
7899 | ui_out_text (uiout, "\nCatchpoint "); | |
7900 | if (ui_out_is_mi_like_p (uiout)) | |
7901 | { | |
7902 | ui_out_field_string (uiout, "reason", | |
7903 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
7904 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7905 | } | |
7906 | ui_out_field_int (uiout, "bkptno", b->number); | |
7907 | ui_out_text (uiout, " (vforked process "); | |
7908 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7909 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7910 | return PRINT_SRC_AND_LOC; |
7911 | } | |
7912 | ||
4a64f543 MS |
7913 | /* Implement the "print_one" breakpoint_ops method for vfork |
7914 | catchpoints. */ | |
ce78b96d JB |
7915 | |
7916 | static void | |
a6d9a66e | 7917 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7918 | { |
e29a4733 | 7919 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7920 | struct value_print_options opts; |
79a45e25 | 7921 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7922 | |
7923 | get_user_print_options (&opts); | |
4a64f543 MS |
7924 | /* Field 4, the address, is omitted (which makes the columns not |
7925 | line up too nicely with the headers, but the effect is relatively | |
7926 | readable). */ | |
79a45b7d | 7927 | if (opts.addressprint) |
ce78b96d JB |
7928 | ui_out_field_skip (uiout, "addr"); |
7929 | annotate_field (5); | |
7930 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 7931 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7932 | { |
7933 | ui_out_text (uiout, ", process "); | |
7934 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7935 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7936 | ui_out_spaces (uiout, 1); |
7937 | } | |
8ac3646f TT |
7938 | |
7939 | if (ui_out_is_mi_like_p (uiout)) | |
7940 | ui_out_field_string (uiout, "catch-type", "vfork"); | |
ce78b96d JB |
7941 | } |
7942 | ||
7943 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7944 | catchpoints. */ | |
7945 | ||
7946 | static void | |
7947 | print_mention_catch_vfork (struct breakpoint *b) | |
7948 | { | |
7949 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7950 | } | |
7951 | ||
6149aea9 PA |
7952 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7953 | catchpoints. */ | |
7954 | ||
7955 | static void | |
7956 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7957 | { | |
7958 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7959 | print_recreate_thread (b, fp); |
6149aea9 PA |
7960 | } |
7961 | ||
ce78b96d JB |
7962 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7963 | ||
2060206e | 7964 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7965 | |
edcc5120 TT |
7966 | /* An instance of this type is used to represent an solib catchpoint. |
7967 | It includes a "struct breakpoint" as a kind of base class; users | |
7968 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7969 | really of this type iff its ops pointer points to | |
7970 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
7971 | ||
7972 | struct solib_catchpoint | |
7973 | { | |
7974 | /* The base class. */ | |
7975 | struct breakpoint base; | |
7976 | ||
7977 | /* True for "catch load", false for "catch unload". */ | |
7978 | unsigned char is_load; | |
7979 | ||
7980 | /* Regular expression to match, if any. COMPILED is only valid when | |
7981 | REGEX is non-NULL. */ | |
7982 | char *regex; | |
7983 | regex_t compiled; | |
7984 | }; | |
7985 | ||
7986 | static void | |
7987 | dtor_catch_solib (struct breakpoint *b) | |
7988 | { | |
7989 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7990 | ||
7991 | if (self->regex) | |
7992 | regfree (&self->compiled); | |
7993 | xfree (self->regex); | |
7994 | ||
7995 | base_breakpoint_ops.dtor (b); | |
7996 | } | |
7997 | ||
7998 | static int | |
7999 | insert_catch_solib (struct bp_location *ignore) | |
8000 | { | |
8001 | return 0; | |
8002 | } | |
8003 | ||
8004 | static int | |
8005 | remove_catch_solib (struct bp_location *ignore) | |
8006 | { | |
8007 | return 0; | |
8008 | } | |
8009 | ||
8010 | static int | |
8011 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
8012 | struct address_space *aspace, | |
8013 | CORE_ADDR bp_addr, | |
8014 | const struct target_waitstatus *ws) | |
8015 | { | |
8016 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
8017 | struct breakpoint *other; | |
8018 | ||
8019 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
8020 | return 1; | |
8021 | ||
8022 | ALL_BREAKPOINTS (other) | |
8023 | { | |
8024 | struct bp_location *other_bl; | |
8025 | ||
8026 | if (other == bl->owner) | |
8027 | continue; | |
8028 | ||
8029 | if (other->type != bp_shlib_event) | |
8030 | continue; | |
8031 | ||
8032 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
8033 | continue; | |
8034 | ||
8035 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
8036 | { | |
8037 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
8038 | return 1; | |
8039 | } | |
8040 | } | |
8041 | ||
8042 | return 0; | |
8043 | } | |
8044 | ||
8045 | static void | |
8046 | check_status_catch_solib (struct bpstats *bs) | |
8047 | { | |
8048 | struct solib_catchpoint *self | |
8049 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
8050 | int ix; | |
8051 | ||
8052 | if (self->is_load) | |
8053 | { | |
8054 | struct so_list *iter; | |
8055 | ||
8056 | for (ix = 0; | |
8057 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
8058 | ix, iter); | |
8059 | ++ix) | |
8060 | { | |
8061 | if (!self->regex | |
8062 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
8063 | return; | |
8064 | } | |
8065 | } | |
8066 | else | |
8067 | { | |
8068 | char *iter; | |
8069 | ||
8070 | for (ix = 0; | |
8071 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
8072 | ix, iter); | |
8073 | ++ix) | |
8074 | { | |
8075 | if (!self->regex | |
8076 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
8077 | return; | |
8078 | } | |
8079 | } | |
8080 | ||
8081 | bs->stop = 0; | |
8082 | bs->print_it = print_it_noop; | |
8083 | } | |
8084 | ||
8085 | static enum print_stop_action | |
8086 | print_it_catch_solib (bpstat bs) | |
8087 | { | |
8088 | struct breakpoint *b = bs->breakpoint_at; | |
8089 | struct ui_out *uiout = current_uiout; | |
8090 | ||
8091 | annotate_catchpoint (b->number); | |
8092 | if (b->disposition == disp_del) | |
8093 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8094 | else | |
8095 | ui_out_text (uiout, "\nCatchpoint "); | |
8096 | ui_out_field_int (uiout, "bkptno", b->number); | |
8097 | ui_out_text (uiout, "\n"); | |
8098 | if (ui_out_is_mi_like_p (uiout)) | |
8099 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8100 | print_solib_event (1); | |
8101 | return PRINT_SRC_AND_LOC; | |
8102 | } | |
8103 | ||
8104 | static void | |
8105 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
8106 | { | |
8107 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8108 | struct value_print_options opts; | |
8109 | struct ui_out *uiout = current_uiout; | |
8110 | char *msg; | |
8111 | ||
8112 | get_user_print_options (&opts); | |
8113 | /* Field 4, the address, is omitted (which makes the columns not | |
8114 | line up too nicely with the headers, but the effect is relatively | |
8115 | readable). */ | |
8116 | if (opts.addressprint) | |
8117 | { | |
8118 | annotate_field (4); | |
8119 | ui_out_field_skip (uiout, "addr"); | |
8120 | } | |
8121 | ||
8122 | annotate_field (5); | |
8123 | if (self->is_load) | |
8124 | { | |
8125 | if (self->regex) | |
8126 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
8127 | else | |
8128 | msg = xstrdup (_("load of library")); | |
8129 | } | |
8130 | else | |
8131 | { | |
8132 | if (self->regex) | |
8133 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
8134 | else | |
8135 | msg = xstrdup (_("unload of library")); | |
8136 | } | |
8137 | ui_out_field_string (uiout, "what", msg); | |
8138 | xfree (msg); | |
8ac3646f TT |
8139 | |
8140 | if (ui_out_is_mi_like_p (uiout)) | |
8141 | ui_out_field_string (uiout, "catch-type", | |
8142 | self->is_load ? "load" : "unload"); | |
edcc5120 TT |
8143 | } |
8144 | ||
8145 | static void | |
8146 | print_mention_catch_solib (struct breakpoint *b) | |
8147 | { | |
8148 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8149 | ||
8150 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
8151 | self->is_load ? "load" : "unload"); | |
8152 | } | |
8153 | ||
8154 | static void | |
8155 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
8156 | { | |
8157 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
8158 | ||
8159 | fprintf_unfiltered (fp, "%s %s", | |
8160 | b->disposition == disp_del ? "tcatch" : "catch", | |
8161 | self->is_load ? "load" : "unload"); | |
8162 | if (self->regex) | |
8163 | fprintf_unfiltered (fp, " %s", self->regex); | |
8164 | fprintf_unfiltered (fp, "\n"); | |
8165 | } | |
8166 | ||
8167 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
8168 | ||
91985142 MG |
8169 | /* Shared helper function (MI and CLI) for creating and installing |
8170 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
8171 | the events to be caught are load events, otherwise they are | |
8172 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
8173 | temporary one. If ENABLED is non-zero the catchpoint is | |
8174 | created in an enabled state. */ | |
edcc5120 | 8175 | |
91985142 MG |
8176 | void |
8177 | add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled) | |
edcc5120 TT |
8178 | { |
8179 | struct solib_catchpoint *c; | |
8180 | struct gdbarch *gdbarch = get_current_arch (); | |
edcc5120 TT |
8181 | struct cleanup *cleanup; |
8182 | ||
edcc5120 TT |
8183 | if (!arg) |
8184 | arg = ""; | |
8185 | arg = skip_spaces (arg); | |
8186 | ||
8187 | c = XCNEW (struct solib_catchpoint); | |
8188 | cleanup = make_cleanup (xfree, c); | |
8189 | ||
8190 | if (*arg != '\0') | |
8191 | { | |
8192 | int errcode; | |
8193 | ||
8194 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
8195 | if (errcode != 0) | |
8196 | { | |
8197 | char *err = get_regcomp_error (errcode, &c->compiled); | |
8198 | ||
8199 | make_cleanup (xfree, err); | |
8200 | error (_("Invalid regexp (%s): %s"), err, arg); | |
8201 | } | |
8202 | c->regex = xstrdup (arg); | |
8203 | } | |
8204 | ||
8205 | c->is_load = is_load; | |
91985142 | 8206 | init_catchpoint (&c->base, gdbarch, is_temp, NULL, |
edcc5120 TT |
8207 | &catch_solib_breakpoint_ops); |
8208 | ||
91985142 MG |
8209 | c->base.enable_state = enabled ? bp_enabled : bp_disabled; |
8210 | ||
edcc5120 TT |
8211 | discard_cleanups (cleanup); |
8212 | install_breakpoint (0, &c->base, 1); | |
8213 | } | |
8214 | ||
91985142 MG |
8215 | /* A helper function that does all the work for "catch load" and |
8216 | "catch unload". */ | |
8217 | ||
8218 | static void | |
8219 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
8220 | struct cmd_list_element *command) | |
8221 | { | |
8222 | int tempflag; | |
8223 | const int enabled = 1; | |
8224 | ||
8225 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
8226 | ||
8227 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
8228 | } | |
8229 | ||
edcc5120 TT |
8230 | static void |
8231 | catch_load_command_1 (char *arg, int from_tty, | |
8232 | struct cmd_list_element *command) | |
8233 | { | |
8234 | catch_load_or_unload (arg, from_tty, 1, command); | |
8235 | } | |
8236 | ||
8237 | static void | |
8238 | catch_unload_command_1 (char *arg, int from_tty, | |
8239 | struct cmd_list_element *command) | |
8240 | { | |
8241 | catch_load_or_unload (arg, from_tty, 0, command); | |
8242 | } | |
8243 | ||
be5c67c1 PA |
8244 | /* An instance of this type is used to represent a syscall catchpoint. |
8245 | It includes a "struct breakpoint" as a kind of base class; users | |
8246 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8247 | really of this type iff its ops pointer points to | |
8248 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
8249 | ||
8250 | struct syscall_catchpoint | |
8251 | { | |
8252 | /* The base class. */ | |
8253 | struct breakpoint base; | |
8254 | ||
8255 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
8256 | syscall has been specified for filtering, its value is NULL. | |
8257 | Otherwise, it holds a list of all syscalls to be caught. The | |
8258 | list elements are allocated with xmalloc. */ | |
8259 | VEC(int) *syscalls_to_be_caught; | |
8260 | }; | |
8261 | ||
8262 | /* Implement the "dtor" breakpoint_ops method for syscall | |
8263 | catchpoints. */ | |
8264 | ||
8265 | static void | |
8266 | dtor_catch_syscall (struct breakpoint *b) | |
8267 | { | |
8268 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
8269 | ||
8270 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 8271 | |
2060206e | 8272 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
8273 | } |
8274 | ||
fa3064dd YQ |
8275 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
8276 | ||
8277 | struct catch_syscall_inferior_data | |
8278 | { | |
8279 | /* We keep a count of the number of times the user has requested a | |
8280 | particular syscall to be tracked, and pass this information to the | |
8281 | target. This lets capable targets implement filtering directly. */ | |
8282 | ||
8283 | /* Number of times that "any" syscall is requested. */ | |
8284 | int any_syscall_count; | |
8285 | ||
8286 | /* Count of each system call. */ | |
8287 | VEC(int) *syscalls_counts; | |
8288 | ||
8289 | /* This counts all syscall catch requests, so we can readily determine | |
8290 | if any catching is necessary. */ | |
8291 | int total_syscalls_count; | |
8292 | }; | |
8293 | ||
8294 | static struct catch_syscall_inferior_data* | |
8295 | get_catch_syscall_inferior_data (struct inferior *inf) | |
8296 | { | |
8297 | struct catch_syscall_inferior_data *inf_data; | |
8298 | ||
8299 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
8300 | if (inf_data == NULL) | |
8301 | { | |
41bf6aca | 8302 | inf_data = XCNEW (struct catch_syscall_inferior_data); |
fa3064dd YQ |
8303 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); |
8304 | } | |
8305 | ||
8306 | return inf_data; | |
8307 | } | |
8308 | ||
8309 | static void | |
8310 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
8311 | { | |
8312 | xfree (arg); | |
8313 | } | |
8314 | ||
8315 | ||
a96d9b2e SDJ |
8316 | /* Implement the "insert" breakpoint_ops method for syscall |
8317 | catchpoints. */ | |
8318 | ||
77b06cd7 TJB |
8319 | static int |
8320 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 8321 | { |
be5c67c1 | 8322 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8323 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8324 | struct catch_syscall_inferior_data *inf_data |
8325 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8326 | |
fa3064dd | 8327 | ++inf_data->total_syscalls_count; |
be5c67c1 | 8328 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8329 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
8330 | else |
8331 | { | |
8332 | int i, iter; | |
cc59ec59 | 8333 | |
a96d9b2e | 8334 | for (i = 0; |
be5c67c1 | 8335 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8336 | i++) |
8337 | { | |
8338 | int elem; | |
cc59ec59 | 8339 | |
fa3064dd | 8340 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 8341 | { |
fa3064dd | 8342 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
8343 | uintptr_t vec_addr_offset |
8344 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 8345 | uintptr_t vec_addr; |
fa3064dd YQ |
8346 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
8347 | vec_addr = ((uintptr_t) VEC_address (int, | |
8348 | inf_data->syscalls_counts) | |
8349 | + vec_addr_offset); | |
a96d9b2e SDJ |
8350 | memset ((void *) vec_addr, 0, |
8351 | (iter + 1 - old_size) * sizeof (int)); | |
8352 | } | |
fa3064dd YQ |
8353 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8354 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
8355 | } |
8356 | } | |
8357 | ||
dfd4cc63 | 8358 | return target_set_syscall_catchpoint (ptid_get_pid (inferior_ptid), |
fa3064dd YQ |
8359 | inf_data->total_syscalls_count != 0, |
8360 | inf_data->any_syscall_count, | |
8361 | VEC_length (int, | |
8362 | inf_data->syscalls_counts), | |
8363 | VEC_address (int, | |
8364 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
8365 | } |
8366 | ||
8367 | /* Implement the "remove" breakpoint_ops method for syscall | |
8368 | catchpoints. */ | |
8369 | ||
8370 | static int | |
77b06cd7 | 8371 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 8372 | { |
be5c67c1 | 8373 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8374 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8375 | struct catch_syscall_inferior_data *inf_data |
8376 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8377 | |
fa3064dd | 8378 | --inf_data->total_syscalls_count; |
be5c67c1 | 8379 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8380 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
8381 | else |
8382 | { | |
8383 | int i, iter; | |
cc59ec59 | 8384 | |
a96d9b2e | 8385 | for (i = 0; |
be5c67c1 | 8386 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8387 | i++) |
8388 | { | |
8389 | int elem; | |
fa3064dd | 8390 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
8391 | /* Shouldn't happen. */ |
8392 | continue; | |
fa3064dd YQ |
8393 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8394 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
8395 | } |
8396 | } | |
8397 | ||
dfd4cc63 | 8398 | return target_set_syscall_catchpoint (ptid_get_pid (inferior_ptid), |
fa3064dd YQ |
8399 | inf_data->total_syscalls_count != 0, |
8400 | inf_data->any_syscall_count, | |
8401 | VEC_length (int, | |
8402 | inf_data->syscalls_counts), | |
3e43a32a | 8403 | VEC_address (int, |
fa3064dd | 8404 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
8405 | } |
8406 | ||
8407 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
8408 | catchpoints. */ | |
8409 | ||
8410 | static int | |
f1310107 | 8411 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
8412 | struct address_space *aspace, CORE_ADDR bp_addr, |
8413 | const struct target_waitstatus *ws) | |
a96d9b2e | 8414 | { |
4a64f543 MS |
8415 | /* We must check if we are catching specific syscalls in this |
8416 | breakpoint. If we are, then we must guarantee that the called | |
8417 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 8418 | int syscall_number = 0; |
be5c67c1 PA |
8419 | const struct syscall_catchpoint *c |
8420 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 8421 | |
f90263c1 TT |
8422 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
8423 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
8424 | return 0; |
8425 | ||
f90263c1 TT |
8426 | syscall_number = ws->value.syscall_number; |
8427 | ||
a96d9b2e | 8428 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 8429 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8430 | { |
8431 | int i, iter; | |
cc59ec59 | 8432 | |
a96d9b2e | 8433 | for (i = 0; |
be5c67c1 | 8434 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8435 | i++) |
8436 | if (syscall_number == iter) | |
4924df79 GKB |
8437 | return 1; |
8438 | ||
8439 | return 0; | |
a96d9b2e SDJ |
8440 | } |
8441 | ||
8442 | return 1; | |
8443 | } | |
8444 | ||
8445 | /* Implement the "print_it" breakpoint_ops method for syscall | |
8446 | catchpoints. */ | |
8447 | ||
8448 | static enum print_stop_action | |
348d480f | 8449 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 8450 | { |
36dfb11c | 8451 | struct ui_out *uiout = current_uiout; |
348d480f | 8452 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
8453 | /* These are needed because we want to know in which state a |
8454 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
8455 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
8456 | must print "called syscall" or "returned from syscall". */ | |
8457 | ptid_t ptid; | |
8458 | struct target_waitstatus last; | |
8459 | struct syscall s; | |
a96d9b2e SDJ |
8460 | |
8461 | get_last_target_status (&ptid, &last); | |
8462 | ||
8463 | get_syscall_by_number (last.value.syscall_number, &s); | |
8464 | ||
8465 | annotate_catchpoint (b->number); | |
8466 | ||
36dfb11c TT |
8467 | if (b->disposition == disp_del) |
8468 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 8469 | else |
36dfb11c TT |
8470 | ui_out_text (uiout, "\nCatchpoint "); |
8471 | if (ui_out_is_mi_like_p (uiout)) | |
8472 | { | |
8473 | ui_out_field_string (uiout, "reason", | |
8474 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
8475 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
8476 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
8477 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8478 | } | |
8479 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
8480 | |
8481 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
8482 | ui_out_text (uiout, " (call to syscall "); |
8483 | else | |
8484 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 8485 | |
36dfb11c TT |
8486 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
8487 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
8488 | if (s.name != NULL) | |
8489 | ui_out_field_string (uiout, "syscall-name", s.name); | |
8490 | ||
8491 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
8492 | |
8493 | return PRINT_SRC_AND_LOC; | |
8494 | } | |
8495 | ||
8496 | /* Implement the "print_one" breakpoint_ops method for syscall | |
8497 | catchpoints. */ | |
8498 | ||
8499 | static void | |
8500 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 8501 | struct bp_location **last_loc) |
a96d9b2e | 8502 | { |
be5c67c1 | 8503 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 8504 | struct value_print_options opts; |
79a45e25 | 8505 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
8506 | |
8507 | get_user_print_options (&opts); | |
4a64f543 MS |
8508 | /* Field 4, the address, is omitted (which makes the columns not |
8509 | line up too nicely with the headers, but the effect is relatively | |
8510 | readable). */ | |
a96d9b2e SDJ |
8511 | if (opts.addressprint) |
8512 | ui_out_field_skip (uiout, "addr"); | |
8513 | annotate_field (5); | |
8514 | ||
be5c67c1 PA |
8515 | if (c->syscalls_to_be_caught |
8516 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
8517 | ui_out_text (uiout, "syscalls \""); |
8518 | else | |
8519 | ui_out_text (uiout, "syscall \""); | |
8520 | ||
be5c67c1 | 8521 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8522 | { |
8523 | int i, iter; | |
8524 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 8525 | |
a96d9b2e | 8526 | for (i = 0; |
be5c67c1 | 8527 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8528 | i++) |
8529 | { | |
8530 | char *x = text; | |
8531 | struct syscall s; | |
8532 | get_syscall_by_number (iter, &s); | |
8533 | ||
8534 | if (s.name != NULL) | |
8535 | text = xstrprintf ("%s%s, ", text, s.name); | |
8536 | else | |
8537 | text = xstrprintf ("%s%d, ", text, iter); | |
8538 | ||
8539 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 8540 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
8541 | on every call. */ |
8542 | xfree (x); | |
8543 | } | |
8544 | /* Remove the last comma. */ | |
8545 | text[strlen (text) - 2] = '\0'; | |
8546 | ui_out_field_string (uiout, "what", text); | |
8547 | } | |
8548 | else | |
8549 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
8550 | ui_out_text (uiout, "\" "); | |
8ac3646f TT |
8551 | |
8552 | if (ui_out_is_mi_like_p (uiout)) | |
8553 | ui_out_field_string (uiout, "catch-type", "syscall"); | |
a96d9b2e SDJ |
8554 | } |
8555 | ||
8556 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
8557 | catchpoints. */ | |
8558 | ||
8559 | static void | |
8560 | print_mention_catch_syscall (struct breakpoint *b) | |
8561 | { | |
be5c67c1 PA |
8562 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8563 | ||
8564 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
8565 | { |
8566 | int i, iter; | |
8567 | ||
be5c67c1 | 8568 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
8569 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
8570 | else | |
8571 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
8572 | ||
8573 | for (i = 0; | |
be5c67c1 | 8574 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8575 | i++) |
8576 | { | |
8577 | struct syscall s; | |
8578 | get_syscall_by_number (iter, &s); | |
8579 | ||
8580 | if (s.name) | |
8581 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
8582 | else | |
8583 | printf_filtered (" %d", s.number); | |
8584 | } | |
8585 | printf_filtered (")"); | |
8586 | } | |
8587 | else | |
8588 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
8589 | b->number); | |
8590 | } | |
8591 | ||
6149aea9 PA |
8592 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
8593 | catchpoints. */ | |
8594 | ||
8595 | static void | |
8596 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
8597 | { | |
be5c67c1 PA |
8598 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8599 | ||
6149aea9 PA |
8600 | fprintf_unfiltered (fp, "catch syscall"); |
8601 | ||
be5c67c1 | 8602 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
8603 | { |
8604 | int i, iter; | |
8605 | ||
8606 | for (i = 0; | |
be5c67c1 | 8607 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
8608 | i++) |
8609 | { | |
8610 | struct syscall s; | |
8611 | ||
8612 | get_syscall_by_number (iter, &s); | |
8613 | if (s.name) | |
8614 | fprintf_unfiltered (fp, " %s", s.name); | |
8615 | else | |
8616 | fprintf_unfiltered (fp, " %d", s.number); | |
8617 | } | |
8618 | } | |
d9b3f62e | 8619 | print_recreate_thread (b, fp); |
6149aea9 PA |
8620 | } |
8621 | ||
a96d9b2e SDJ |
8622 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
8623 | ||
2060206e | 8624 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
8625 | |
8626 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
8627 | ||
8628 | static int | |
8629 | syscall_catchpoint_p (struct breakpoint *b) | |
8630 | { | |
8631 | return (b->ops == &catch_syscall_breakpoint_ops); | |
8632 | } | |
8633 | ||
346774a9 PA |
8634 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8635 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8636 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8637 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8638 | |
ab04a2af | 8639 | void |
346774a9 PA |
8640 | init_catchpoint (struct breakpoint *b, |
8641 | struct gdbarch *gdbarch, int tempflag, | |
8642 | char *cond_string, | |
c0a91b2b | 8643 | const struct breakpoint_ops *ops) |
c906108c | 8644 | { |
c5aa993b | 8645 | struct symtab_and_line sal; |
346774a9 | 8646 | |
fe39c653 | 8647 | init_sal (&sal); |
6c95b8df | 8648 | sal.pspace = current_program_space; |
c5aa993b | 8649 | |
28010a5d | 8650 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8651 | |
1b36a34b | 8652 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8653 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8654 | } |
8655 | ||
28010a5d | 8656 | void |
3ea46bff | 8657 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8658 | { |
8659 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8660 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8661 | if (is_tracepoint (b)) |
8662 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8663 | if (!internal) |
8664 | mention (b); | |
c56053d2 | 8665 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8666 | |
8667 | if (update_gll) | |
8668 | update_global_location_list (1); | |
c56053d2 PA |
8669 | } |
8670 | ||
9b70b993 | 8671 | static void |
a6d9a66e UW |
8672 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8673 | int tempflag, char *cond_string, | |
c0a91b2b | 8674 | const struct breakpoint_ops *ops) |
c906108c | 8675 | { |
e29a4733 | 8676 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8677 | |
e29a4733 PA |
8678 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8679 | ||
8680 | c->forked_inferior_pid = null_ptid; | |
8681 | ||
3ea46bff | 8682 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8683 | } |
8684 | ||
fe798b75 JB |
8685 | /* Exec catchpoints. */ |
8686 | ||
b4d90040 PA |
8687 | /* An instance of this type is used to represent an exec catchpoint. |
8688 | It includes a "struct breakpoint" as a kind of base class; users | |
8689 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8690 | really of this type iff its ops pointer points to | |
8691 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8692 | ||
8693 | struct exec_catchpoint | |
8694 | { | |
8695 | /* The base class. */ | |
8696 | struct breakpoint base; | |
8697 | ||
8698 | /* Filename of a program whose exec triggered this catchpoint. | |
8699 | This field is only valid immediately after this catchpoint has | |
8700 | triggered. */ | |
8701 | char *exec_pathname; | |
8702 | }; | |
8703 | ||
8704 | /* Implement the "dtor" breakpoint_ops method for exec | |
8705 | catchpoints. */ | |
8706 | ||
8707 | static void | |
8708 | dtor_catch_exec (struct breakpoint *b) | |
8709 | { | |
8710 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8711 | ||
8712 | xfree (c->exec_pathname); | |
348d480f | 8713 | |
2060206e | 8714 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8715 | } |
8716 | ||
77b06cd7 TJB |
8717 | static int |
8718 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8719 | { |
dfd4cc63 | 8720 | return target_insert_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8721 | } |
c906108c | 8722 | |
fe798b75 | 8723 | static int |
77b06cd7 | 8724 | remove_catch_exec (struct bp_location *bl) |
fe798b75 | 8725 | { |
dfd4cc63 | 8726 | return target_remove_exec_catchpoint (ptid_get_pid (inferior_ptid)); |
fe798b75 | 8727 | } |
c906108c | 8728 | |
fe798b75 | 8729 | static int |
f1310107 | 8730 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8731 | struct address_space *aspace, CORE_ADDR bp_addr, |
8732 | const struct target_waitstatus *ws) | |
fe798b75 | 8733 | { |
b4d90040 PA |
8734 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8735 | ||
f90263c1 TT |
8736 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8737 | return 0; | |
8738 | ||
8739 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8740 | return 1; | |
fe798b75 | 8741 | } |
c906108c | 8742 | |
fe798b75 | 8743 | static enum print_stop_action |
348d480f | 8744 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8745 | { |
36dfb11c | 8746 | struct ui_out *uiout = current_uiout; |
348d480f | 8747 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8748 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8749 | ||
fe798b75 | 8750 | annotate_catchpoint (b->number); |
36dfb11c TT |
8751 | if (b->disposition == disp_del) |
8752 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8753 | else | |
8754 | ui_out_text (uiout, "\nCatchpoint "); | |
8755 | if (ui_out_is_mi_like_p (uiout)) | |
8756 | { | |
8757 | ui_out_field_string (uiout, "reason", | |
8758 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8759 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8760 | } | |
8761 | ui_out_field_int (uiout, "bkptno", b->number); | |
8762 | ui_out_text (uiout, " (exec'd "); | |
8763 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8764 | ui_out_text (uiout, "), "); | |
8765 | ||
fe798b75 | 8766 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8767 | } |
8768 | ||
fe798b75 | 8769 | static void |
a6d9a66e | 8770 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8771 | { |
b4d90040 | 8772 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8773 | struct value_print_options opts; |
79a45e25 | 8774 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8775 | |
8776 | get_user_print_options (&opts); | |
8777 | ||
8778 | /* Field 4, the address, is omitted (which makes the columns | |
8779 | not line up too nicely with the headers, but the effect | |
8780 | is relatively readable). */ | |
8781 | if (opts.addressprint) | |
8782 | ui_out_field_skip (uiout, "addr"); | |
8783 | annotate_field (5); | |
8784 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8785 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8786 | { |
8787 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8788 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8789 | ui_out_text (uiout, "\" "); |
8790 | } | |
8ac3646f TT |
8791 | |
8792 | if (ui_out_is_mi_like_p (uiout)) | |
8793 | ui_out_field_string (uiout, "catch-type", "exec"); | |
fe798b75 JB |
8794 | } |
8795 | ||
8796 | static void | |
8797 | print_mention_catch_exec (struct breakpoint *b) | |
8798 | { | |
8799 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8800 | } | |
8801 | ||
6149aea9 PA |
8802 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8803 | catchpoints. */ | |
8804 | ||
8805 | static void | |
8806 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8807 | { | |
8808 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8809 | print_recreate_thread (b, fp); |
6149aea9 PA |
8810 | } |
8811 | ||
2060206e | 8812 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8813 | |
a96d9b2e SDJ |
8814 | static void |
8815 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 8816 | const struct breakpoint_ops *ops) |
a96d9b2e | 8817 | { |
be5c67c1 | 8818 | struct syscall_catchpoint *c; |
a96d9b2e | 8819 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 8820 | |
be5c67c1 PA |
8821 | c = XNEW (struct syscall_catchpoint); |
8822 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
8823 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 8824 | |
3ea46bff | 8825 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
8826 | } |
8827 | ||
c906108c | 8828 | static int |
fba45db2 | 8829 | hw_breakpoint_used_count (void) |
c906108c | 8830 | { |
c906108c | 8831 | int i = 0; |
f1310107 TJB |
8832 | struct breakpoint *b; |
8833 | struct bp_location *bl; | |
c906108c SS |
8834 | |
8835 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8836 | { |
d6b74ac4 | 8837 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8838 | for (bl = b->loc; bl; bl = bl->next) |
8839 | { | |
8840 | /* Special types of hardware breakpoints may use more than | |
8841 | one register. */ | |
348d480f | 8842 | i += b->ops->resources_needed (bl); |
f1310107 | 8843 | } |
c5aa993b | 8844 | } |
c906108c SS |
8845 | |
8846 | return i; | |
8847 | } | |
8848 | ||
a1398e0c PA |
8849 | /* Returns the resources B would use if it were a hardware |
8850 | watchpoint. */ | |
8851 | ||
c906108c | 8852 | static int |
a1398e0c | 8853 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8854 | { |
c906108c | 8855 | int i = 0; |
e09342b5 | 8856 | struct bp_location *bl; |
c906108c | 8857 | |
a1398e0c PA |
8858 | if (!breakpoint_enabled (b)) |
8859 | return 0; | |
8860 | ||
8861 | for (bl = b->loc; bl; bl = bl->next) | |
8862 | { | |
8863 | /* Special types of hardware watchpoints may use more than | |
8864 | one register. */ | |
8865 | i += b->ops->resources_needed (bl); | |
8866 | } | |
8867 | ||
8868 | return i; | |
8869 | } | |
8870 | ||
8871 | /* Returns the sum the used resources of all hardware watchpoints of | |
8872 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8873 | the sum of the used resources of all hardware watchpoints of other | |
8874 | types _not_ TYPE. */ | |
8875 | ||
8876 | static int | |
8877 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8878 | enum bptype type, int *other_type_used) | |
8879 | { | |
8880 | int i = 0; | |
8881 | struct breakpoint *b; | |
8882 | ||
c906108c SS |
8883 | *other_type_used = 0; |
8884 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8885 | { |
a1398e0c PA |
8886 | if (b == except) |
8887 | continue; | |
e09342b5 TJB |
8888 | if (!breakpoint_enabled (b)) |
8889 | continue; | |
8890 | ||
a1398e0c PA |
8891 | if (b->type == type) |
8892 | i += hw_watchpoint_use_count (b); | |
8893 | else if (is_hardware_watchpoint (b)) | |
8894 | *other_type_used = 1; | |
e09342b5 TJB |
8895 | } |
8896 | ||
c906108c SS |
8897 | return i; |
8898 | } | |
8899 | ||
c906108c | 8900 | void |
fba45db2 | 8901 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8902 | { |
c5aa993b | 8903 | struct breakpoint *b; |
c906108c SS |
8904 | |
8905 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8906 | { |
cc60f2e3 | 8907 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8908 | { |
b5de0fa7 | 8909 | b->enable_state = bp_call_disabled; |
b60e7edf | 8910 | update_global_location_list (0); |
c5aa993b JM |
8911 | } |
8912 | } | |
c906108c SS |
8913 | } |
8914 | ||
8915 | void | |
fba45db2 | 8916 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8917 | { |
c5aa993b | 8918 | struct breakpoint *b; |
c906108c SS |
8919 | |
8920 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8921 | { |
cc60f2e3 | 8922 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8923 | { |
b5de0fa7 | 8924 | b->enable_state = bp_enabled; |
b60e7edf | 8925 | update_global_location_list (1); |
c5aa993b JM |
8926 | } |
8927 | } | |
c906108c SS |
8928 | } |
8929 | ||
8bea4e01 UW |
8930 | void |
8931 | disable_breakpoints_before_startup (void) | |
8932 | { | |
6c95b8df | 8933 | current_program_space->executing_startup = 1; |
f8eba3c6 | 8934 | update_global_location_list (0); |
8bea4e01 UW |
8935 | } |
8936 | ||
8937 | void | |
8938 | enable_breakpoints_after_startup (void) | |
8939 | { | |
6c95b8df | 8940 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8941 | breakpoint_re_set (); |
8bea4e01 UW |
8942 | } |
8943 | ||
c906108c SS |
8944 | |
8945 | /* Set a breakpoint that will evaporate an end of command | |
8946 | at address specified by SAL. | |
8947 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
8948 | ||
8949 | struct breakpoint * | |
a6d9a66e UW |
8950 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8951 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8952 | { |
52f0bd74 | 8953 | struct breakpoint *b; |
edb3359d | 8954 | |
193facb3 JK |
8955 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8956 | tail-called one. */ | |
8957 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8958 | |
06edf0c0 | 8959 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8960 | b->enable_state = bp_enabled; |
8961 | b->disposition = disp_donttouch; | |
818dd999 | 8962 | b->frame_id = frame_id; |
c906108c | 8963 | |
4a64f543 MS |
8964 | /* If we're debugging a multi-threaded program, then we want |
8965 | momentary breakpoints to be active in only a single thread of | |
8966 | control. */ | |
39f77062 KB |
8967 | if (in_thread_list (inferior_ptid)) |
8968 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8969 | |
b60e7edf | 8970 | update_global_location_list_nothrow (1); |
74960c60 | 8971 | |
c906108c SS |
8972 | return b; |
8973 | } | |
611c83ae | 8974 | |
06edf0c0 PA |
8975 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
8976 | The new breakpoint will have type TYPE, and use OPS as it | |
8977 | breakpoint_ops. */ | |
e58b0e63 | 8978 | |
06edf0c0 PA |
8979 | static struct breakpoint * |
8980 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8981 | enum bptype type, | |
c0a91b2b | 8982 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
8983 | { |
8984 | struct breakpoint *copy; | |
8985 | ||
06edf0c0 | 8986 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8987 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8988 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8989 | |
a6d9a66e | 8990 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8991 | copy->loc->requested_address = orig->loc->requested_address; |
8992 | copy->loc->address = orig->loc->address; | |
8993 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8994 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8995 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8996 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8997 | copy->loc->symtab = orig->loc->symtab; |
e58b0e63 PA |
8998 | copy->frame_id = orig->frame_id; |
8999 | copy->thread = orig->thread; | |
6c95b8df | 9000 | copy->pspace = orig->pspace; |
e58b0e63 PA |
9001 | |
9002 | copy->enable_state = bp_enabled; | |
9003 | copy->disposition = disp_donttouch; | |
9004 | copy->number = internal_breakpoint_number--; | |
9005 | ||
9006 | update_global_location_list_nothrow (0); | |
9007 | return copy; | |
9008 | } | |
9009 | ||
06edf0c0 PA |
9010 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
9011 | ORIG is NULL. */ | |
9012 | ||
9013 | struct breakpoint * | |
9014 | clone_momentary_breakpoint (struct breakpoint *orig) | |
9015 | { | |
9016 | /* If there's nothing to clone, then return nothing. */ | |
9017 | if (orig == NULL) | |
9018 | return NULL; | |
9019 | ||
9020 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
9021 | } | |
9022 | ||
611c83ae | 9023 | struct breakpoint * |
a6d9a66e UW |
9024 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
9025 | enum bptype type) | |
611c83ae PA |
9026 | { |
9027 | struct symtab_and_line sal; | |
9028 | ||
9029 | sal = find_pc_line (pc, 0); | |
9030 | sal.pc = pc; | |
9031 | sal.section = find_pc_overlay (pc); | |
9032 | sal.explicit_pc = 1; | |
9033 | ||
a6d9a66e | 9034 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 9035 | } |
c906108c | 9036 | \f |
c5aa993b | 9037 | |
c906108c SS |
9038 | /* Tell the user we have just set a breakpoint B. */ |
9039 | ||
9040 | static void | |
fba45db2 | 9041 | mention (struct breakpoint *b) |
c906108c | 9042 | { |
348d480f | 9043 | b->ops->print_mention (b); |
79a45e25 | 9044 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 9045 | return; |
c906108c SS |
9046 | printf_filtered ("\n"); |
9047 | } | |
c906108c | 9048 | \f |
c5aa993b | 9049 | |
0d381245 | 9050 | static struct bp_location * |
39d61571 | 9051 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
9052 | const struct symtab_and_line *sal) |
9053 | { | |
9054 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
9055 | CORE_ADDR adjusted_address; |
9056 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
9057 | ||
9058 | if (loc_gdbarch == NULL) | |
9059 | loc_gdbarch = b->gdbarch; | |
9060 | ||
9061 | /* Adjust the breakpoint's address prior to allocating a location. | |
9062 | Once we call allocate_bp_location(), that mostly uninitialized | |
9063 | location will be placed on the location chain. Adjustment of the | |
9064 | breakpoint may cause target_read_memory() to be called and we do | |
9065 | not want its scan of the location chain to find a breakpoint and | |
9066 | location that's only been partially initialized. */ | |
9067 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
9068 | sal->pc, b->type); | |
0d381245 | 9069 | |
d30113d4 | 9070 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 9071 | loc = allocate_bp_location (b); |
d30113d4 JK |
9072 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
9073 | tmp = &((*tmp)->next)) | |
0d381245 | 9074 | ; |
d30113d4 | 9075 | loc->next = *tmp; |
0d381245 | 9076 | *tmp = loc; |
3742cc8b | 9077 | |
0d381245 | 9078 | loc->requested_address = sal->pc; |
3742cc8b | 9079 | loc->address = adjusted_address; |
6c95b8df | 9080 | loc->pspace = sal->pspace; |
729662a5 TT |
9081 | loc->probe.probe = sal->probe; |
9082 | loc->probe.objfile = sal->objfile; | |
6c95b8df | 9083 | gdb_assert (loc->pspace != NULL); |
0d381245 | 9084 | loc->section = sal->section; |
3742cc8b | 9085 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 9086 | loc->line_number = sal->line; |
2f202fde | 9087 | loc->symtab = sal->symtab; |
f8eba3c6 | 9088 | |
0e30163f JK |
9089 | set_breakpoint_location_function (loc, |
9090 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
9091 | return loc; |
9092 | } | |
514f746b AR |
9093 | \f |
9094 | ||
9095 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
9096 | return 0 otherwise. */ | |
9097 | ||
9098 | static int | |
9099 | bp_loc_is_permanent (struct bp_location *loc) | |
9100 | { | |
9101 | int len; | |
9102 | CORE_ADDR addr; | |
1afeeb75 | 9103 | const gdb_byte *bpoint; |
514f746b | 9104 | gdb_byte *target_mem; |
939c61fa JK |
9105 | struct cleanup *cleanup; |
9106 | int retval = 0; | |
514f746b AR |
9107 | |
9108 | gdb_assert (loc != NULL); | |
9109 | ||
9110 | addr = loc->address; | |
1afeeb75 | 9111 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 9112 | |
939c61fa | 9113 | /* Software breakpoints unsupported? */ |
1afeeb75 | 9114 | if (bpoint == NULL) |
939c61fa JK |
9115 | return 0; |
9116 | ||
514f746b AR |
9117 | target_mem = alloca (len); |
9118 | ||
939c61fa JK |
9119 | /* Enable the automatic memory restoration from breakpoints while |
9120 | we read the memory. Otherwise we could say about our temporary | |
9121 | breakpoints they are permanent. */ | |
6c95b8df PA |
9122 | cleanup = save_current_space_and_thread (); |
9123 | ||
9124 | switch_to_program_space_and_thread (loc->pspace); | |
9125 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 9126 | |
514f746b | 9127 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 9128 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 9129 | retval = 1; |
514f746b | 9130 | |
939c61fa JK |
9131 | do_cleanups (cleanup); |
9132 | ||
9133 | return retval; | |
514f746b AR |
9134 | } |
9135 | ||
e7e0cddf SS |
9136 | /* Build a command list for the dprintf corresponding to the current |
9137 | settings of the dprintf style options. */ | |
9138 | ||
9139 | static void | |
9140 | update_dprintf_command_list (struct breakpoint *b) | |
9141 | { | |
9142 | char *dprintf_args = b->extra_string; | |
9143 | char *printf_line = NULL; | |
9144 | ||
9145 | if (!dprintf_args) | |
9146 | return; | |
9147 | ||
9148 | dprintf_args = skip_spaces (dprintf_args); | |
9149 | ||
9150 | /* Allow a comma, as it may have terminated a location, but don't | |
9151 | insist on it. */ | |
9152 | if (*dprintf_args == ',') | |
9153 | ++dprintf_args; | |
9154 | dprintf_args = skip_spaces (dprintf_args); | |
9155 | ||
9156 | if (*dprintf_args != '"') | |
9157 | error (_("Bad format string, missing '\"'.")); | |
9158 | ||
d3ce09f5 | 9159 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 9160 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 9161 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
9162 | { |
9163 | if (!dprintf_function) | |
9164 | error (_("No function supplied for dprintf call")); | |
9165 | ||
9166 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
9167 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
9168 | dprintf_function, | |
9169 | dprintf_channel, | |
9170 | dprintf_args); | |
9171 | else | |
9172 | printf_line = xstrprintf ("call (void) %s (%s)", | |
9173 | dprintf_function, | |
9174 | dprintf_args); | |
9175 | } | |
d3ce09f5 SS |
9176 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
9177 | { | |
9178 | if (target_can_run_breakpoint_commands ()) | |
9179 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
9180 | else | |
9181 | { | |
9182 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
9183 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
9184 | } | |
9185 | } | |
e7e0cddf SS |
9186 | else |
9187 | internal_error (__FILE__, __LINE__, | |
9188 | _("Invalid dprintf style.")); | |
9189 | ||
f28045c2 | 9190 | gdb_assert (printf_line != NULL); |
9d6e6e84 | 9191 | /* Manufacture a printf sequence. */ |
f28045c2 | 9192 | { |
9d6e6e84 HZ |
9193 | struct command_line *printf_cmd_line |
9194 | = xmalloc (sizeof (struct command_line)); | |
e7e0cddf | 9195 | |
f28045c2 YQ |
9196 | printf_cmd_line = xmalloc (sizeof (struct command_line)); |
9197 | printf_cmd_line->control_type = simple_control; | |
9198 | printf_cmd_line->body_count = 0; | |
9199 | printf_cmd_line->body_list = NULL; | |
9d6e6e84 | 9200 | printf_cmd_line->next = NULL; |
f28045c2 | 9201 | printf_cmd_line->line = printf_line; |
e7e0cddf | 9202 | |
f28045c2 YQ |
9203 | breakpoint_set_commands (b, printf_cmd_line); |
9204 | } | |
e7e0cddf SS |
9205 | } |
9206 | ||
9207 | /* Update all dprintf commands, making their command lists reflect | |
9208 | current style settings. */ | |
9209 | ||
9210 | static void | |
9211 | update_dprintf_commands (char *args, int from_tty, | |
9212 | struct cmd_list_element *c) | |
9213 | { | |
9214 | struct breakpoint *b; | |
9215 | ||
9216 | ALL_BREAKPOINTS (b) | |
9217 | { | |
9218 | if (b->type == bp_dprintf) | |
9219 | update_dprintf_command_list (b); | |
9220 | } | |
9221 | } | |
c3f6f71d | 9222 | |
018d34a4 VP |
9223 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
9224 | as textual description of the location, and COND_STRING | |
db107f19 | 9225 | as condition expression. */ |
018d34a4 VP |
9226 | |
9227 | static void | |
d9b3f62e PA |
9228 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
9229 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9230 | char *filter, char *cond_string, |
e7e0cddf | 9231 | char *extra_string, |
d9b3f62e PA |
9232 | enum bptype type, enum bpdisp disposition, |
9233 | int thread, int task, int ignore_count, | |
c0a91b2b | 9234 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9235 | int enabled, int internal, unsigned flags, |
9236 | int display_canonical) | |
018d34a4 | 9237 | { |
0d381245 | 9238 | int i; |
018d34a4 VP |
9239 | |
9240 | if (type == bp_hardware_breakpoint) | |
9241 | { | |
fbbd034e AS |
9242 | int target_resources_ok; |
9243 | ||
9244 | i = hw_breakpoint_used_count (); | |
9245 | target_resources_ok = | |
9246 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
9247 | i + 1, 0); |
9248 | if (target_resources_ok == 0) | |
9249 | error (_("No hardware breakpoint support in the target.")); | |
9250 | else if (target_resources_ok < 0) | |
9251 | error (_("Hardware breakpoints used exceeds limit.")); | |
9252 | } | |
9253 | ||
6c95b8df PA |
9254 | gdb_assert (sals.nelts > 0); |
9255 | ||
0d381245 VP |
9256 | for (i = 0; i < sals.nelts; ++i) |
9257 | { | |
9258 | struct symtab_and_line sal = sals.sals[i]; | |
9259 | struct bp_location *loc; | |
9260 | ||
9261 | if (from_tty) | |
5af949e3 UW |
9262 | { |
9263 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
9264 | if (!loc_gdbarch) | |
9265 | loc_gdbarch = gdbarch; | |
9266 | ||
9267 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 9268 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 9269 | } |
0d381245 VP |
9270 | |
9271 | if (i == 0) | |
9272 | { | |
d9b3f62e | 9273 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 9274 | b->thread = thread; |
4a306c9a | 9275 | b->task = task; |
855a6e68 | 9276 | |
0d381245 | 9277 | b->cond_string = cond_string; |
e7e0cddf | 9278 | b->extra_string = extra_string; |
0d381245 | 9279 | b->ignore_count = ignore_count; |
41447f92 | 9280 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 9281 | b->disposition = disposition; |
6c95b8df | 9282 | |
44f238bb PA |
9283 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9284 | b->loc->inserted = 1; | |
9285 | ||
0fb4aa4b PA |
9286 | if (type == bp_static_tracepoint) |
9287 | { | |
d9b3f62e | 9288 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9289 | struct static_tracepoint_marker marker; |
9290 | ||
983af33b | 9291 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9292 | { |
9293 | /* We already know the marker exists, otherwise, we | |
9294 | wouldn't see a sal for it. */ | |
9295 | char *p = &addr_string[3]; | |
9296 | char *endp; | |
9297 | char *marker_str; | |
0fb4aa4b | 9298 | |
e9cafbcc | 9299 | p = skip_spaces (p); |
0fb4aa4b | 9300 | |
e9cafbcc | 9301 | endp = skip_to_space (p); |
0fb4aa4b PA |
9302 | |
9303 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9304 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9305 | |
3e43a32a MS |
9306 | printf_filtered (_("Probed static tracepoint " |
9307 | "marker \"%s\"\n"), | |
d9b3f62e | 9308 | t->static_trace_marker_id); |
0fb4aa4b PA |
9309 | } |
9310 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9311 | { | |
d9b3f62e | 9312 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9313 | release_static_tracepoint_marker (&marker); |
9314 | ||
3e43a32a MS |
9315 | printf_filtered (_("Probed static tracepoint " |
9316 | "marker \"%s\"\n"), | |
d9b3f62e | 9317 | t->static_trace_marker_id); |
0fb4aa4b PA |
9318 | } |
9319 | else | |
3e43a32a MS |
9320 | warning (_("Couldn't determine the static " |
9321 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9322 | } |
9323 | ||
0d381245 VP |
9324 | loc = b->loc; |
9325 | } | |
9326 | else | |
018d34a4 | 9327 | { |
39d61571 | 9328 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9329 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9330 | loc->inserted = 1; | |
0d381245 VP |
9331 | } |
9332 | ||
514f746b AR |
9333 | if (bp_loc_is_permanent (loc)) |
9334 | make_breakpoint_permanent (b); | |
9335 | ||
0d381245 VP |
9336 | if (b->cond_string) |
9337 | { | |
bbc13ae3 KS |
9338 | const char *arg = b->cond_string; |
9339 | ||
1bb9788d TT |
9340 | loc->cond = parse_exp_1 (&arg, loc->address, |
9341 | block_for_pc (loc->address), 0); | |
0d381245 | 9342 | if (*arg) |
588ae58c | 9343 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9344 | } |
e7e0cddf SS |
9345 | |
9346 | /* Dynamic printf requires and uses additional arguments on the | |
9347 | command line, otherwise it's an error. */ | |
9348 | if (type == bp_dprintf) | |
9349 | { | |
9350 | if (b->extra_string) | |
9351 | update_dprintf_command_list (b); | |
9352 | else | |
9353 | error (_("Format string required")); | |
9354 | } | |
9355 | else if (b->extra_string) | |
588ae58c | 9356 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9357 | } |
018d34a4 | 9358 | |
56435ebe | 9359 | b->display_canonical = display_canonical; |
018d34a4 VP |
9360 | if (addr_string) |
9361 | b->addr_string = addr_string; | |
9362 | else | |
9363 | /* addr_string has to be used or breakpoint_re_set will delete | |
9364 | me. */ | |
5af949e3 UW |
9365 | b->addr_string |
9366 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 9367 | b->filter = filter; |
d9b3f62e | 9368 | } |
018d34a4 | 9369 | |
d9b3f62e PA |
9370 | static void |
9371 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
9372 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9373 | char *filter, char *cond_string, |
e7e0cddf | 9374 | char *extra_string, |
d9b3f62e PA |
9375 | enum bptype type, enum bpdisp disposition, |
9376 | int thread, int task, int ignore_count, | |
c0a91b2b | 9377 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9378 | int enabled, int internal, unsigned flags, |
9379 | int display_canonical) | |
d9b3f62e PA |
9380 | { |
9381 | struct breakpoint *b; | |
9382 | struct cleanup *old_chain; | |
9383 | ||
9384 | if (is_tracepoint_type (type)) | |
9385 | { | |
9386 | struct tracepoint *t; | |
9387 | ||
9388 | t = XCNEW (struct tracepoint); | |
9389 | b = &t->base; | |
9390 | } | |
9391 | else | |
9392 | b = XNEW (struct breakpoint); | |
9393 | ||
9394 | old_chain = make_cleanup (xfree, b); | |
9395 | ||
9396 | init_breakpoint_sal (b, gdbarch, | |
9397 | sals, addr_string, | |
e7e0cddf | 9398 | filter, cond_string, extra_string, |
d9b3f62e PA |
9399 | type, disposition, |
9400 | thread, task, ignore_count, | |
9401 | ops, from_tty, | |
44f238bb PA |
9402 | enabled, internal, flags, |
9403 | display_canonical); | |
d9b3f62e PA |
9404 | discard_cleanups (old_chain); |
9405 | ||
3ea46bff | 9406 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9407 | } |
9408 | ||
9409 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9410 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9411 | value. COND_STRING, if not NULL, specified the condition to be | |
9412 | used for all breakpoints. Essentially the only case where | |
9413 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9414 | function. In that case, it's still not possible to specify | |
9415 | separate conditions for different overloaded functions, so | |
9416 | we take just a single condition string. | |
9417 | ||
c3f6f71d | 9418 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9419 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9420 | array contents). If the function fails (error() is called), the |
9421 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9422 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9423 | |
9424 | static void | |
8cdf0e15 | 9425 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9426 | struct linespec_result *canonical, |
e7e0cddf | 9427 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9428 | enum bptype type, enum bpdisp disposition, |
9429 | int thread, int task, int ignore_count, | |
c0a91b2b | 9430 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9431 | int enabled, int internal, unsigned flags) |
c906108c | 9432 | { |
018d34a4 | 9433 | int i; |
f8eba3c6 | 9434 | struct linespec_sals *lsal; |
cc59ec59 | 9435 | |
f8eba3c6 TT |
9436 | if (canonical->pre_expanded) |
9437 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9438 | ||
9439 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9440 | { |
f8eba3c6 TT |
9441 | /* Note that 'addr_string' can be NULL in the case of a plain |
9442 | 'break', without arguments. */ | |
9443 | char *addr_string = (canonical->addr_string | |
9444 | ? xstrdup (canonical->addr_string) | |
9445 | : NULL); | |
9446 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
9447 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 9448 | |
f8eba3c6 TT |
9449 | make_cleanup (xfree, filter_string); |
9450 | create_breakpoint_sal (gdbarch, lsal->sals, | |
9451 | addr_string, | |
9452 | filter_string, | |
e7e0cddf SS |
9453 | cond_string, extra_string, |
9454 | type, disposition, | |
84f4c1fe | 9455 | thread, task, ignore_count, ops, |
44f238bb | 9456 | from_tty, enabled, internal, flags, |
56435ebe | 9457 | canonical->special_display); |
f8eba3c6 | 9458 | discard_cleanups (inner); |
c3f6f71d | 9459 | } |
c3f6f71d | 9460 | } |
c906108c | 9461 | |
9998af43 | 9462 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 9463 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 9464 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
9465 | address strings. ADDRESS points to the end of the SAL. |
9466 | ||
9467 | The array and the line spec strings are allocated on the heap, it is | |
9468 | the caller's responsibility to free them. */ | |
c906108c | 9469 | |
b9362cc7 | 9470 | static void |
c3f6f71d | 9471 | parse_breakpoint_sals (char **address, |
58438ac1 | 9472 | struct linespec_result *canonical) |
c3f6f71d | 9473 | { |
c3f6f71d | 9474 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 9475 | breakpoint. */ |
c3f6f71d JM |
9476 | if ((*address) == NULL |
9477 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 9478 | { |
1bfeeb0f JL |
9479 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
9480 | address. */ | |
9481 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9482 | { |
f8eba3c6 | 9483 | struct linespec_sals lsal; |
c3f6f71d | 9484 | struct symtab_and_line sal; |
1c8cdcb1 | 9485 | CORE_ADDR pc; |
cc59ec59 | 9486 | |
4a64f543 | 9487 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 9488 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 9489 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
9490 | |
9491 | /* Set sal's pspace, pc, symtab, and line to the values | |
1c8cdcb1 JK |
9492 | corresponding to the last call to print_frame_info. |
9493 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9494 | as the breakpoint line number is inappropriate otherwise. | |
9495 | find_pc_line would adjust PC, re-set it back. */ | |
1bfeeb0f | 9496 | get_last_displayed_sal (&sal); |
1c8cdcb1 JK |
9497 | pc = sal.pc; |
9498 | sal = find_pc_line (pc, 0); | |
00903456 | 9499 | |
4a64f543 | 9500 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
9501 | where PC is the last displayed codepoint's address. So |
9502 | make sure to set sal.explicit_pc to prevent GDB from | |
9503 | trying to expand the list of sals to include all other | |
9504 | instances with the same symtab and line. */ | |
1c8cdcb1 | 9505 | sal.pc = pc; |
00903456 JK |
9506 | sal.explicit_pc = 1; |
9507 | ||
f8eba3c6 TT |
9508 | lsal.sals.sals[0] = sal; |
9509 | lsal.sals.nelts = 1; | |
9510 | lsal.canonical = NULL; | |
9511 | ||
9512 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
9513 | } |
9514 | else | |
8a3fe4f8 | 9515 | error (_("No default breakpoint address now.")); |
c906108c SS |
9516 | } |
9517 | else | |
9518 | { | |
cc80f267 JK |
9519 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
9520 | ||
c906108c | 9521 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
9522 | current_source_symtab (which is decode_line_1's default). |
9523 | This should produce the results we want almost all of the | |
cc80f267 JK |
9524 | time while leaving default_breakpoint_* alone. |
9525 | ||
9526 | ObjC: However, don't match an Objective-C method name which | |
9527 | may have a '+' or '-' succeeded by a '['. */ | |
9528 | if (last_displayed_sal_is_valid () | |
9529 | && (!cursal.symtab | |
9530 | || ((strchr ("+-", (*address)[0]) != NULL) | |
9531 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
9532 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
9533 | get_last_displayed_symtab (), | |
9534 | get_last_displayed_line (), | |
9535 | canonical, NULL, NULL); | |
c906108c | 9536 | else |
f8eba3c6 | 9537 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 9538 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 9539 | } |
c3f6f71d | 9540 | } |
c906108c | 9541 | |
c906108c | 9542 | |
c3f6f71d | 9543 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9544 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9545 | |
b9362cc7 | 9546 | static void |
23e7acfb | 9547 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9548 | { |
9549 | int i; | |
cc59ec59 | 9550 | |
c3f6f71d | 9551 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9552 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9553 | } |
9554 | ||
7a697b8d SS |
9555 | /* Fast tracepoints may have restrictions on valid locations. For |
9556 | instance, a fast tracepoint using a jump instead of a trap will | |
9557 | likely have to overwrite more bytes than a trap would, and so can | |
9558 | only be placed where the instruction is longer than the jump, or a | |
9559 | multi-instruction sequence does not have a jump into the middle of | |
9560 | it, etc. */ | |
9561 | ||
9562 | static void | |
9563 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9564 | struct symtabs_and_lines *sals) | |
9565 | { | |
9566 | int i, rslt; | |
9567 | struct symtab_and_line *sal; | |
9568 | char *msg; | |
9569 | struct cleanup *old_chain; | |
9570 | ||
9571 | for (i = 0; i < sals->nelts; i++) | |
9572 | { | |
f8eba3c6 TT |
9573 | struct gdbarch *sarch; |
9574 | ||
7a697b8d SS |
9575 | sal = &sals->sals[i]; |
9576 | ||
f8eba3c6 TT |
9577 | sarch = get_sal_arch (*sal); |
9578 | /* We fall back to GDBARCH if there is no architecture | |
9579 | associated with SAL. */ | |
9580 | if (sarch == NULL) | |
9581 | sarch = gdbarch; | |
9582 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9583 | NULL, &msg); |
9584 | old_chain = make_cleanup (xfree, msg); | |
9585 | ||
9586 | if (!rslt) | |
9587 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9588 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9589 | |
9590 | do_cleanups (old_chain); | |
9591 | } | |
9592 | } | |
9593 | ||
af4908ba KS |
9594 | /* Issue an invalid thread ID error. */ |
9595 | ||
9596 | static void ATTRIBUTE_NORETURN | |
9597 | invalid_thread_id_error (int id) | |
9598 | { | |
9599 | error (_("Unknown thread %d."), id); | |
9600 | } | |
9601 | ||
018d34a4 VP |
9602 | /* Given TOK, a string specification of condition and thread, as |
9603 | accepted by the 'break' command, extract the condition | |
9604 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9605 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9606 | If no condition is found, *COND_STRING is set to NULL. |
9607 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9608 | |
9609 | static void | |
bbc13ae3 | 9610 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9611 | char **cond_string, int *thread, int *task, |
9612 | char **rest) | |
018d34a4 VP |
9613 | { |
9614 | *cond_string = NULL; | |
9615 | *thread = -1; | |
ed1d1739 KS |
9616 | *task = 0; |
9617 | *rest = NULL; | |
9618 | ||
018d34a4 VP |
9619 | while (tok && *tok) |
9620 | { | |
bbc13ae3 | 9621 | const char *end_tok; |
018d34a4 | 9622 | int toklen; |
bbc13ae3 KS |
9623 | const char *cond_start = NULL; |
9624 | const char *cond_end = NULL; | |
cc59ec59 | 9625 | |
bbc13ae3 | 9626 | tok = skip_spaces_const (tok); |
e7e0cddf SS |
9627 | |
9628 | if ((*tok == '"' || *tok == ',') && rest) | |
9629 | { | |
9630 | *rest = savestring (tok, strlen (tok)); | |
9631 | return; | |
9632 | } | |
9633 | ||
bbc13ae3 | 9634 | end_tok = skip_to_space_const (tok); |
d634f2de | 9635 | |
018d34a4 | 9636 | toklen = end_tok - tok; |
d634f2de | 9637 | |
018d34a4 VP |
9638 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9639 | { | |
f7545552 TT |
9640 | struct expression *expr; |
9641 | ||
018d34a4 | 9642 | tok = cond_start = end_tok + 1; |
1bb9788d | 9643 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9644 | xfree (expr); |
018d34a4 | 9645 | cond_end = tok; |
d634f2de | 9646 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9647 | } |
9648 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9649 | { | |
9650 | char *tmptok; | |
d634f2de | 9651 | |
018d34a4 | 9652 | tok = end_tok + 1; |
bbc13ae3 | 9653 | *thread = strtol (tok, &tmptok, 0); |
018d34a4 VP |
9654 | if (tok == tmptok) |
9655 | error (_("Junk after thread keyword.")); | |
9656 | if (!valid_thread_id (*thread)) | |
af4908ba | 9657 | invalid_thread_id_error (*thread); |
bbc13ae3 | 9658 | tok = tmptok; |
018d34a4 | 9659 | } |
4a306c9a JB |
9660 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9661 | { | |
9662 | char *tmptok; | |
9663 | ||
9664 | tok = end_tok + 1; | |
bbc13ae3 | 9665 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9666 | if (tok == tmptok) |
9667 | error (_("Junk after task keyword.")); | |
9668 | if (!valid_task_id (*task)) | |
b6199126 | 9669 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9670 | tok = tmptok; |
4a306c9a | 9671 | } |
e7e0cddf SS |
9672 | else if (rest) |
9673 | { | |
9674 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9675 | return; |
e7e0cddf | 9676 | } |
018d34a4 VP |
9677 | else |
9678 | error (_("Junk at end of arguments.")); | |
9679 | } | |
9680 | } | |
9681 | ||
0fb4aa4b PA |
9682 | /* Decode a static tracepoint marker spec. */ |
9683 | ||
9684 | static struct symtabs_and_lines | |
9685 | decode_static_tracepoint_spec (char **arg_p) | |
9686 | { | |
9687 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9688 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9689 | struct cleanup *old_chain; |
9690 | char *p = &(*arg_p)[3]; | |
9691 | char *endp; | |
9692 | char *marker_str; | |
9693 | int i; | |
9694 | ||
e9cafbcc | 9695 | p = skip_spaces (p); |
0fb4aa4b | 9696 | |
e9cafbcc | 9697 | endp = skip_to_space (p); |
0fb4aa4b PA |
9698 | |
9699 | marker_str = savestring (p, endp - p); | |
9700 | old_chain = make_cleanup (xfree, marker_str); | |
9701 | ||
9702 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9703 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9704 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9705 | ||
9706 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9707 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9708 | ||
9709 | for (i = 0; i < sals.nelts; i++) | |
9710 | { | |
9711 | struct static_tracepoint_marker *marker; | |
9712 | ||
9713 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9714 | ||
9715 | init_sal (&sals.sals[i]); | |
9716 | ||
9717 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9718 | sals.sals[i].pc = marker->address; | |
9719 | ||
9720 | release_static_tracepoint_marker (marker); | |
9721 | } | |
9722 | ||
9723 | do_cleanups (old_chain); | |
9724 | ||
9725 | *arg_p = endp; | |
9726 | return sals; | |
9727 | } | |
9728 | ||
fd9b8c24 PA |
9729 | /* Set a breakpoint. This function is shared between CLI and MI |
9730 | functions for setting a breakpoint. This function has two major | |
f6de8ec2 PA |
9731 | modes of operations, selected by the PARSE_ARG parameter. If |
9732 | non-zero, the function will parse ARG, extracting location, | |
9733 | condition, thread and extra string. Otherwise, ARG is just the | |
9734 | breakpoint's location, with condition, thread, and extra string | |
9735 | specified by the COND_STRING, THREAD and EXTRA_STRING parameters. | |
9736 | If INTERNAL is non-zero, the breakpoint number will be allocated | |
9737 | from the internal breakpoint count. Returns true if any breakpoint | |
9738 | was created; false otherwise. */ | |
0101ce28 | 9739 | |
8cdf0e15 VP |
9740 | int |
9741 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9742 | char *arg, char *cond_string, |
9743 | int thread, char *extra_string, | |
f6de8ec2 | 9744 | int parse_arg, |
0fb4aa4b | 9745 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9746 | int ignore_count, |
9747 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9748 | const struct breakpoint_ops *ops, |
44f238bb PA |
9749 | int from_tty, int enabled, int internal, |
9750 | unsigned flags) | |
c3f6f71d | 9751 | { |
b78a6381 | 9752 | volatile struct gdb_exception e; |
f8eba3c6 | 9753 | char *copy_arg = NULL; |
c3f6f71d | 9754 | char *addr_start = arg; |
7efd8fc2 | 9755 | struct linespec_result canonical; |
c3f6f71d | 9756 | struct cleanup *old_chain; |
80c99de1 | 9757 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9758 | int pending = 0; |
4a306c9a | 9759 | int task = 0; |
86b17b60 | 9760 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9761 | |
348d480f PA |
9762 | gdb_assert (ops != NULL); |
9763 | ||
7efd8fc2 | 9764 | init_linespec_result (&canonical); |
c3f6f71d | 9765 | |
b78a6381 TT |
9766 | TRY_CATCH (e, RETURN_MASK_ALL) |
9767 | { | |
983af33b SDJ |
9768 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9769 | addr_start, ©_arg); | |
b78a6381 | 9770 | } |
0101ce28 JJ |
9771 | |
9772 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 9773 | switch (e.reason) |
0101ce28 | 9774 | { |
983af33b SDJ |
9775 | case GDB_NO_ERROR: |
9776 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9777 | return 0; | |
9778 | break; | |
05ff989b AC |
9779 | case RETURN_ERROR: |
9780 | switch (e.error) | |
0101ce28 | 9781 | { |
05ff989b | 9782 | case NOT_FOUND_ERROR: |
0101ce28 | 9783 | |
05ff989b AC |
9784 | /* If pending breakpoint support is turned off, throw |
9785 | error. */ | |
fa8d40ab JJ |
9786 | |
9787 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9788 | throw_exception (e); |
9789 | ||
9790 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9791 | |
05ff989b AC |
9792 | /* If pending breakpoint support is auto query and the user |
9793 | selects no, then simply return the error code. */ | |
059fb39f | 9794 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9795 | && !nquery (_("Make %s pending on future shared library load? "), |
9796 | bptype_string (type_wanted))) | |
fd9b8c24 | 9797 | return 0; |
fa8d40ab | 9798 | |
05ff989b AC |
9799 | /* At this point, either the user was queried about setting |
9800 | a pending breakpoint and selected yes, or pending | |
9801 | breakpoint behavior is on and thus a pending breakpoint | |
9802 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9803 | { |
9804 | struct linespec_sals lsal; | |
9805 | ||
9806 | copy_arg = xstrdup (addr_start); | |
9807 | lsal.canonical = xstrdup (copy_arg); | |
9808 | lsal.sals.nelts = 1; | |
9809 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9810 | init_sal (&lsal.sals.sals[0]); | |
9811 | pending = 1; | |
9812 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9813 | } | |
05ff989b AC |
9814 | break; |
9815 | default: | |
98deb0da | 9816 | throw_exception (e); |
0101ce28 | 9817 | } |
2abae994 | 9818 | break; |
05ff989b | 9819 | default: |
983af33b | 9820 | throw_exception (e); |
0101ce28 | 9821 | } |
c3f6f71d | 9822 | |
4a64f543 | 9823 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9824 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9825 | |
c3f6f71d JM |
9826 | /* ----------------------------- SNIP ----------------------------- |
9827 | Anything added to the cleanup chain beyond this point is assumed | |
9828 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9829 | then the memory is not reclaimed. */ |
9830 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9831 | |
c3f6f71d JM |
9832 | /* Resolve all line numbers to PC's and verify that the addresses |
9833 | are ok for the target. */ | |
0101ce28 | 9834 | if (!pending) |
f8eba3c6 TT |
9835 | { |
9836 | int ix; | |
9837 | struct linespec_sals *iter; | |
9838 | ||
9839 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9840 | breakpoint_sals_to_pc (&iter->sals); | |
9841 | } | |
c3f6f71d | 9842 | |
7a697b8d | 9843 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9844 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9845 | { |
9846 | int ix; | |
9847 | struct linespec_sals *iter; | |
9848 | ||
9849 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9850 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9851 | } | |
7a697b8d | 9852 | |
c3f6f71d JM |
9853 | /* Verify that condition can be parsed, before setting any |
9854 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9855 | breakpoint. */ |
0101ce28 | 9856 | if (!pending) |
c3f6f71d | 9857 | { |
f6de8ec2 | 9858 | if (parse_arg) |
72b2ff0e | 9859 | { |
0878d0fa | 9860 | char *rest; |
52d361e1 YQ |
9861 | struct linespec_sals *lsal; |
9862 | ||
9863 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9864 | ||
0878d0fa YQ |
9865 | /* Here we only parse 'arg' to separate condition |
9866 | from thread number, so parsing in context of first | |
9867 | sal is OK. When setting the breakpoint we'll | |
9868 | re-parse it in context of each sal. */ | |
9869 | ||
9870 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, | |
9871 | &thread, &task, &rest); | |
9872 | if (cond_string) | |
9873 | make_cleanup (xfree, cond_string); | |
9874 | if (rest) | |
9875 | make_cleanup (xfree, rest); | |
9876 | if (rest) | |
9877 | extra_string = rest; | |
72b2ff0e | 9878 | } |
2f069f6f | 9879 | else |
72b2ff0e | 9880 | { |
0878d0fa YQ |
9881 | if (*arg != '\0') |
9882 | error (_("Garbage '%s' at end of location"), arg); | |
9883 | ||
9884 | /* Create a private copy of condition string. */ | |
9885 | if (cond_string) | |
9886 | { | |
9887 | cond_string = xstrdup (cond_string); | |
9888 | make_cleanup (xfree, cond_string); | |
9889 | } | |
9890 | /* Create a private copy of any extra string. */ | |
9891 | if (extra_string) | |
9892 | { | |
9893 | extra_string = xstrdup (extra_string); | |
9894 | make_cleanup (xfree, extra_string); | |
9895 | } | |
72b2ff0e | 9896 | } |
0fb4aa4b | 9897 | |
52d361e1 | 9898 | ops->create_breakpoints_sal (gdbarch, &canonical, |
e7e0cddf | 9899 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9900 | tempflag ? disp_del : disp_donttouch, |
9901 | thread, task, ignore_count, ops, | |
44f238bb | 9902 | from_tty, enabled, internal, flags); |
c906108c | 9903 | } |
0101ce28 JJ |
9904 | else |
9905 | { | |
0101ce28 JJ |
9906 | struct breakpoint *b; |
9907 | ||
0101ce28 JJ |
9908 | make_cleanup (xfree, copy_arg); |
9909 | ||
bfccc43c YQ |
9910 | if (is_tracepoint_type (type_wanted)) |
9911 | { | |
9912 | struct tracepoint *t; | |
9913 | ||
9914 | t = XCNEW (struct tracepoint); | |
9915 | b = &t->base; | |
9916 | } | |
9917 | else | |
9918 | b = XNEW (struct breakpoint); | |
9919 | ||
9920 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9921 | ||
f8eba3c6 | 9922 | b->addr_string = copy_arg; |
f6de8ec2 | 9923 | if (parse_arg) |
e12c7713 MK |
9924 | b->cond_string = NULL; |
9925 | else | |
9926 | { | |
9927 | /* Create a private copy of condition string. */ | |
9928 | if (cond_string) | |
9929 | { | |
9930 | cond_string = xstrdup (cond_string); | |
9931 | make_cleanup (xfree, cond_string); | |
9932 | } | |
9933 | b->cond_string = cond_string; | |
9934 | } | |
e7e0cddf | 9935 | b->extra_string = NULL; |
0101ce28 | 9936 | b->ignore_count = ignore_count; |
0101ce28 | 9937 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9938 | b->condition_not_parsed = 1; |
41447f92 | 9939 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9940 | if ((type_wanted != bp_breakpoint |
9941 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9942 | b->pspace = current_program_space; |
8bea4e01 | 9943 | |
bfccc43c | 9944 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9945 | } |
9946 | ||
f8eba3c6 | 9947 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9948 | { |
3e43a32a MS |
9949 | warning (_("Multiple breakpoints were set.\nUse the " |
9950 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9951 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9952 | } |
9953 | ||
80c99de1 PA |
9954 | /* That's it. Discard the cleanups for data inserted into the |
9955 | breakpoint. */ | |
9956 | discard_cleanups (bkpt_chain); | |
9957 | /* But cleanup everything else. */ | |
c3f6f71d | 9958 | do_cleanups (old_chain); |
217dc9e2 | 9959 | |
80c99de1 | 9960 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 9961 | update_global_location_list (1); |
fd9b8c24 PA |
9962 | |
9963 | return 1; | |
c3f6f71d | 9964 | } |
c906108c | 9965 | |
348d480f | 9966 | /* Set a breakpoint. |
72b2ff0e VP |
9967 | ARG is a string describing breakpoint address, |
9968 | condition, and thread. | |
9969 | FLAG specifies if a breakpoint is hardware on, | |
9970 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9971 | and BP_TEMPFLAG. */ | |
348d480f | 9972 | |
98deb0da | 9973 | static void |
72b2ff0e | 9974 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9975 | { |
72b2ff0e | 9976 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9977 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9978 | ? bp_hardware_breakpoint | |
9979 | : bp_breakpoint); | |
55aa24fb SDJ |
9980 | struct breakpoint_ops *ops; |
9981 | const char *arg_cp = arg; | |
9982 | ||
9983 | /* Matching breakpoints on probes. */ | |
9984 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9985 | ops = &bkpt_probe_breakpoint_ops; | |
9986 | else | |
9987 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9988 | |
8cdf0e15 VP |
9989 | create_breakpoint (get_current_arch (), |
9990 | arg, | |
e7e0cddf | 9991 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9992 | tempflag, type_wanted, |
8cdf0e15 VP |
9993 | 0 /* Ignore count */, |
9994 | pending_break_support, | |
55aa24fb | 9995 | ops, |
8cdf0e15 | 9996 | from_tty, |
84f4c1fe | 9997 | 1 /* enabled */, |
44f238bb PA |
9998 | 0 /* internal */, |
9999 | 0); | |
c906108c SS |
10000 | } |
10001 | ||
c906108c SS |
10002 | /* Helper function for break_command_1 and disassemble_command. */ |
10003 | ||
10004 | void | |
fba45db2 | 10005 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
10006 | { |
10007 | CORE_ADDR pc; | |
10008 | ||
10009 | if (sal->pc == 0 && sal->symtab != NULL) | |
10010 | { | |
10011 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 10012 | error (_("No line %d in file \"%s\"."), |
05cba821 | 10013 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 10014 | sal->pc = pc; |
6a048695 | 10015 | |
4a64f543 MS |
10016 | /* If this SAL corresponds to a breakpoint inserted using a line |
10017 | number, then skip the function prologue if necessary. */ | |
6a048695 | 10018 | if (sal->explicit_line) |
059acae7 | 10019 | skip_prologue_sal (sal); |
c906108c SS |
10020 | } |
10021 | ||
10022 | if (sal->section == 0 && sal->symtab != NULL) | |
10023 | { | |
10024 | struct blockvector *bv; | |
c5aa993b JM |
10025 | struct block *b; |
10026 | struct symbol *sym; | |
c906108c | 10027 | |
801e3a5b | 10028 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
10029 | if (bv != NULL) |
10030 | { | |
7f0df278 | 10031 | sym = block_linkage_function (b); |
c906108c SS |
10032 | if (sym != NULL) |
10033 | { | |
10034 | fixup_symbol_section (sym, sal->symtab->objfile); | |
e27d198c | 10035 | sal->section = SYMBOL_OBJ_SECTION (sal->symtab->objfile, sym); |
c906108c SS |
10036 | } |
10037 | else | |
10038 | { | |
4a64f543 MS |
10039 | /* It really is worthwhile to have the section, so we'll |
10040 | just have to look harder. This case can be executed | |
10041 | if we have line numbers but no functions (as can | |
10042 | happen in assembly source). */ | |
c906108c | 10043 | |
7cbd4a93 | 10044 | struct bound_minimal_symbol msym; |
6c95b8df PA |
10045 | struct cleanup *old_chain = save_current_space_and_thread (); |
10046 | ||
10047 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
10048 | |
10049 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7cbd4a93 | 10050 | if (msym.minsym) |
efd66ac6 | 10051 | sal->section = MSYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
6c95b8df PA |
10052 | |
10053 | do_cleanups (old_chain); | |
c906108c SS |
10054 | } |
10055 | } | |
10056 | } | |
10057 | } | |
10058 | ||
10059 | void | |
fba45db2 | 10060 | break_command (char *arg, int from_tty) |
c906108c | 10061 | { |
db107f19 | 10062 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10063 | } |
10064 | ||
c906108c | 10065 | void |
fba45db2 | 10066 | tbreak_command (char *arg, int from_tty) |
c906108c | 10067 | { |
db107f19 | 10068 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
10069 | } |
10070 | ||
c906108c | 10071 | static void |
fba45db2 | 10072 | hbreak_command (char *arg, int from_tty) |
c906108c | 10073 | { |
db107f19 | 10074 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
10075 | } |
10076 | ||
10077 | static void | |
fba45db2 | 10078 | thbreak_command (char *arg, int from_tty) |
c906108c | 10079 | { |
db107f19 | 10080 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
10081 | } |
10082 | ||
10083 | static void | |
fba45db2 | 10084 | stop_command (char *arg, int from_tty) |
c906108c | 10085 | { |
a3f17187 | 10086 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 10087 | Usage: stop in <function | address>\n\ |
a3f17187 | 10088 | stop at <line>\n")); |
c906108c SS |
10089 | } |
10090 | ||
10091 | static void | |
fba45db2 | 10092 | stopin_command (char *arg, int from_tty) |
c906108c SS |
10093 | { |
10094 | int badInput = 0; | |
10095 | ||
c5aa993b | 10096 | if (arg == (char *) NULL) |
c906108c SS |
10097 | badInput = 1; |
10098 | else if (*arg != '*') | |
10099 | { | |
10100 | char *argptr = arg; | |
10101 | int hasColon = 0; | |
10102 | ||
4a64f543 | 10103 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 10104 | say it is bad, otherwise, it should be an address or |
4a64f543 | 10105 | function/method name. */ |
c906108c | 10106 | while (*argptr && !hasColon) |
c5aa993b JM |
10107 | { |
10108 | hasColon = (*argptr == ':'); | |
10109 | argptr++; | |
10110 | } | |
c906108c SS |
10111 | |
10112 | if (hasColon) | |
c5aa993b | 10113 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 10114 | else |
c5aa993b | 10115 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
10116 | } |
10117 | ||
10118 | if (badInput) | |
a3f17187 | 10119 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 10120 | else |
db107f19 | 10121 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10122 | } |
10123 | ||
10124 | static void | |
fba45db2 | 10125 | stopat_command (char *arg, int from_tty) |
c906108c SS |
10126 | { |
10127 | int badInput = 0; | |
10128 | ||
c5aa993b | 10129 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
10130 | badInput = 1; |
10131 | else | |
10132 | { | |
10133 | char *argptr = arg; | |
10134 | int hasColon = 0; | |
10135 | ||
4a64f543 MS |
10136 | /* Look for a ':'. If there is a '::' then get out, otherwise |
10137 | it is probably a line number. */ | |
c906108c | 10138 | while (*argptr && !hasColon) |
c5aa993b JM |
10139 | { |
10140 | hasColon = (*argptr == ':'); | |
10141 | argptr++; | |
10142 | } | |
c906108c SS |
10143 | |
10144 | if (hasColon) | |
c5aa993b | 10145 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 10146 | else |
c5aa993b | 10147 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
10148 | } |
10149 | ||
10150 | if (badInput) | |
a3f17187 | 10151 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 10152 | else |
db107f19 | 10153 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
10154 | } |
10155 | ||
e7e0cddf SS |
10156 | /* The dynamic printf command is mostly like a regular breakpoint, but |
10157 | with a prewired command list consisting of a single output command, | |
10158 | built from extra arguments supplied on the dprintf command | |
10159 | line. */ | |
10160 | ||
da821c7b | 10161 | static void |
e7e0cddf SS |
10162 | dprintf_command (char *arg, int from_tty) |
10163 | { | |
10164 | create_breakpoint (get_current_arch (), | |
10165 | arg, | |
10166 | NULL, 0, NULL, 1 /* parse arg */, | |
10167 | 0, bp_dprintf, | |
10168 | 0 /* Ignore count */, | |
10169 | pending_break_support, | |
10170 | &dprintf_breakpoint_ops, | |
10171 | from_tty, | |
10172 | 1 /* enabled */, | |
10173 | 0 /* internal */, | |
10174 | 0); | |
10175 | } | |
10176 | ||
d3ce09f5 SS |
10177 | static void |
10178 | agent_printf_command (char *arg, int from_tty) | |
10179 | { | |
10180 | error (_("May only run agent-printf on the target")); | |
10181 | } | |
10182 | ||
f1310107 TJB |
10183 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
10184 | ranged breakpoints. */ | |
10185 | ||
10186 | static int | |
10187 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
10188 | struct address_space *aspace, | |
09ac7c10 TT |
10189 | CORE_ADDR bp_addr, |
10190 | const struct target_waitstatus *ws) | |
f1310107 | 10191 | { |
09ac7c10 | 10192 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 10193 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
10194 | return 0; |
10195 | ||
f1310107 TJB |
10196 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
10197 | bl->length, aspace, bp_addr); | |
10198 | } | |
10199 | ||
10200 | /* Implement the "resources_needed" breakpoint_ops method for | |
10201 | ranged breakpoints. */ | |
10202 | ||
10203 | static int | |
10204 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
10205 | { | |
10206 | return target_ranged_break_num_registers (); | |
10207 | } | |
10208 | ||
10209 | /* Implement the "print_it" breakpoint_ops method for | |
10210 | ranged breakpoints. */ | |
10211 | ||
10212 | static enum print_stop_action | |
348d480f | 10213 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 10214 | { |
348d480f | 10215 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 10216 | struct bp_location *bl = b->loc; |
79a45e25 | 10217 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10218 | |
10219 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10220 | ||
10221 | /* Ranged breakpoints have only one location. */ | |
10222 | gdb_assert (bl && bl->next == NULL); | |
10223 | ||
10224 | annotate_breakpoint (b->number); | |
10225 | if (b->disposition == disp_del) | |
10226 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
10227 | else | |
10228 | ui_out_text (uiout, "\nRanged breakpoint "); | |
10229 | if (ui_out_is_mi_like_p (uiout)) | |
10230 | { | |
10231 | ui_out_field_string (uiout, "reason", | |
10232 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
10233 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
10234 | } | |
10235 | ui_out_field_int (uiout, "bkptno", b->number); | |
10236 | ui_out_text (uiout, ", "); | |
10237 | ||
10238 | return PRINT_SRC_AND_LOC; | |
10239 | } | |
10240 | ||
10241 | /* Implement the "print_one" breakpoint_ops method for | |
10242 | ranged breakpoints. */ | |
10243 | ||
10244 | static void | |
10245 | print_one_ranged_breakpoint (struct breakpoint *b, | |
10246 | struct bp_location **last_loc) | |
10247 | { | |
10248 | struct bp_location *bl = b->loc; | |
10249 | struct value_print_options opts; | |
79a45e25 | 10250 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10251 | |
10252 | /* Ranged breakpoints have only one location. */ | |
10253 | gdb_assert (bl && bl->next == NULL); | |
10254 | ||
10255 | get_user_print_options (&opts); | |
10256 | ||
10257 | if (opts.addressprint) | |
10258 | /* We don't print the address range here, it will be printed later | |
10259 | by print_one_detail_ranged_breakpoint. */ | |
10260 | ui_out_field_skip (uiout, "addr"); | |
10261 | annotate_field (5); | |
10262 | print_breakpoint_location (b, bl); | |
10263 | *last_loc = bl; | |
10264 | } | |
10265 | ||
10266 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10267 | ranged breakpoints. */ | |
10268 | ||
10269 | static void | |
10270 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
10271 | struct ui_out *uiout) | |
10272 | { | |
10273 | CORE_ADDR address_start, address_end; | |
10274 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
10275 | struct ui_file *stb = mem_fileopen (); |
10276 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
10277 | |
10278 | gdb_assert (bl); | |
10279 | ||
10280 | address_start = bl->address; | |
10281 | address_end = address_start + bl->length - 1; | |
10282 | ||
10283 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 10284 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
10285 | print_core_address (bl->gdbarch, address_start), |
10286 | print_core_address (bl->gdbarch, address_end)); | |
10287 | ui_out_field_stream (uiout, "addr", stb); | |
10288 | ui_out_text (uiout, "\n"); | |
10289 | ||
10290 | do_cleanups (cleanup); | |
10291 | } | |
10292 | ||
10293 | /* Implement the "print_mention" breakpoint_ops method for | |
10294 | ranged breakpoints. */ | |
10295 | ||
10296 | static void | |
10297 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10298 | { | |
10299 | struct bp_location *bl = b->loc; | |
79a45e25 | 10300 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10301 | |
10302 | gdb_assert (bl); | |
10303 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10304 | ||
10305 | if (ui_out_is_mi_like_p (uiout)) | |
10306 | return; | |
10307 | ||
10308 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10309 | b->number, paddress (bl->gdbarch, bl->address), | |
10310 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10311 | } | |
10312 | ||
10313 | /* Implement the "print_recreate" breakpoint_ops method for | |
10314 | ranged breakpoints. */ | |
10315 | ||
10316 | static void | |
10317 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10318 | { | |
10319 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
10320 | b->addr_string_range_end); | |
d9b3f62e | 10321 | print_recreate_thread (b, fp); |
f1310107 TJB |
10322 | } |
10323 | ||
10324 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10325 | ||
2060206e | 10326 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10327 | |
10328 | /* Find the address where the end of the breakpoint range should be | |
10329 | placed, given the SAL of the end of the range. This is so that if | |
10330 | the user provides a line number, the end of the range is set to the | |
10331 | last instruction of the given line. */ | |
10332 | ||
10333 | static CORE_ADDR | |
10334 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10335 | { | |
10336 | CORE_ADDR end; | |
10337 | ||
10338 | /* If the user provided a PC value, use it. Otherwise, | |
10339 | find the address of the end of the given location. */ | |
10340 | if (sal.explicit_pc) | |
10341 | end = sal.pc; | |
10342 | else | |
10343 | { | |
10344 | int ret; | |
10345 | CORE_ADDR start; | |
10346 | ||
10347 | ret = find_line_pc_range (sal, &start, &end); | |
10348 | if (!ret) | |
10349 | error (_("Could not find location of the end of the range.")); | |
10350 | ||
10351 | /* find_line_pc_range returns the start of the next line. */ | |
10352 | end--; | |
10353 | } | |
10354 | ||
10355 | return end; | |
10356 | } | |
10357 | ||
10358 | /* Implement the "break-range" CLI command. */ | |
10359 | ||
10360 | static void | |
10361 | break_range_command (char *arg, int from_tty) | |
10362 | { | |
10363 | char *arg_start, *addr_string_start, *addr_string_end; | |
10364 | struct linespec_result canonical_start, canonical_end; | |
10365 | int bp_count, can_use_bp, length; | |
10366 | CORE_ADDR end; | |
10367 | struct breakpoint *b; | |
10368 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10369 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10370 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
10371 | |
10372 | /* We don't support software ranged breakpoints. */ | |
10373 | if (target_ranged_break_num_registers () < 0) | |
10374 | error (_("This target does not support hardware ranged breakpoints.")); | |
10375 | ||
10376 | bp_count = hw_breakpoint_used_count (); | |
10377 | bp_count += target_ranged_break_num_registers (); | |
10378 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10379 | bp_count, 0); | |
10380 | if (can_use_bp < 0) | |
10381 | error (_("Hardware breakpoints used exceeds limit.")); | |
10382 | ||
f8eba3c6 | 10383 | arg = skip_spaces (arg); |
f1310107 TJB |
10384 | if (arg == NULL || arg[0] == '\0') |
10385 | error(_("No address range specified.")); | |
10386 | ||
f1310107 TJB |
10387 | init_linespec_result (&canonical_start); |
10388 | ||
f8eba3c6 TT |
10389 | arg_start = arg; |
10390 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 10391 | |
f8eba3c6 | 10392 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
10393 | |
10394 | if (arg[0] != ',') | |
10395 | error (_("Too few arguments.")); | |
f8eba3c6 | 10396 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10397 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10398 | |
10399 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10400 | ||
10401 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10402 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10403 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10404 | ||
f8eba3c6 TT |
10405 | sal_start = lsal_start->sals.sals[0]; |
10406 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10407 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10408 | |
10409 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10410 | arg = skip_spaces (arg); |
f1310107 TJB |
10411 | |
10412 | /* Parse the end location. */ | |
10413 | ||
f1310107 TJB |
10414 | init_linespec_result (&canonical_end); |
10415 | arg_start = arg; | |
10416 | ||
f8eba3c6 | 10417 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10418 | parse_breakpoint_sals because we need to specify the start location's |
10419 | symtab and line as the default symtab and line for the end of the | |
10420 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10421 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
10422 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
10423 | sal_start.symtab, sal_start.line, | |
10424 | &canonical_end, NULL, NULL); | |
10425 | ||
10426 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10427 | |
f8eba3c6 | 10428 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10429 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10430 | |
10431 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10432 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10433 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10434 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10435 | ||
f8eba3c6 TT |
10436 | sal_end = lsal_end->sals.sals[0]; |
10437 | addr_string_end = savestring (arg_start, arg - arg_start); | |
10438 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
10439 | |
10440 | end = find_breakpoint_range_end (sal_end); | |
10441 | if (sal_start.pc > end) | |
177b42fe | 10442 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10443 | |
10444 | length = end - sal_start.pc + 1; | |
10445 | if (length < 0) | |
10446 | /* Length overflowed. */ | |
10447 | error (_("Address range too large.")); | |
10448 | else if (length == 1) | |
10449 | { | |
10450 | /* This range is simple enough to be handled by | |
10451 | the `hbreak' command. */ | |
10452 | hbreak_command (addr_string_start, 1); | |
10453 | ||
10454 | do_cleanups (cleanup_bkpt); | |
10455 | ||
10456 | return; | |
10457 | } | |
10458 | ||
10459 | /* Now set up the breakpoint. */ | |
10460 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10461 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10462 | set_breakpoint_count (breakpoint_count + 1); |
10463 | b->number = breakpoint_count; | |
10464 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
10465 | b->addr_string = xstrdup (addr_string_start); |
10466 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
10467 | b->loc->length = length; |
10468 | ||
f8eba3c6 | 10469 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10470 | |
10471 | mention (b); | |
8d3788bd | 10472 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
10473 | update_global_location_list (1); |
10474 | } | |
10475 | ||
4a64f543 MS |
10476 | /* Return non-zero if EXP is verified as constant. Returned zero |
10477 | means EXP is variable. Also the constant detection may fail for | |
10478 | some constant expressions and in such case still falsely return | |
10479 | zero. */ | |
2e6e3d9c | 10480 | |
65d79d4b SDJ |
10481 | static int |
10482 | watchpoint_exp_is_const (const struct expression *exp) | |
10483 | { | |
10484 | int i = exp->nelts; | |
10485 | ||
10486 | while (i > 0) | |
10487 | { | |
10488 | int oplenp, argsp; | |
10489 | ||
10490 | /* We are only interested in the descriptor of each element. */ | |
10491 | operator_length (exp, i, &oplenp, &argsp); | |
10492 | i -= oplenp; | |
10493 | ||
10494 | switch (exp->elts[i].opcode) | |
10495 | { | |
10496 | case BINOP_ADD: | |
10497 | case BINOP_SUB: | |
10498 | case BINOP_MUL: | |
10499 | case BINOP_DIV: | |
10500 | case BINOP_REM: | |
10501 | case BINOP_MOD: | |
10502 | case BINOP_LSH: | |
10503 | case BINOP_RSH: | |
10504 | case BINOP_LOGICAL_AND: | |
10505 | case BINOP_LOGICAL_OR: | |
10506 | case BINOP_BITWISE_AND: | |
10507 | case BINOP_BITWISE_IOR: | |
10508 | case BINOP_BITWISE_XOR: | |
10509 | case BINOP_EQUAL: | |
10510 | case BINOP_NOTEQUAL: | |
10511 | case BINOP_LESS: | |
10512 | case BINOP_GTR: | |
10513 | case BINOP_LEQ: | |
10514 | case BINOP_GEQ: | |
10515 | case BINOP_REPEAT: | |
10516 | case BINOP_COMMA: | |
10517 | case BINOP_EXP: | |
10518 | case BINOP_MIN: | |
10519 | case BINOP_MAX: | |
10520 | case BINOP_INTDIV: | |
10521 | case BINOP_CONCAT: | |
10522 | case BINOP_IN: | |
10523 | case BINOP_RANGE: | |
10524 | case TERNOP_COND: | |
10525 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10526 | |
10527 | case OP_LONG: | |
10528 | case OP_DOUBLE: | |
10529 | case OP_DECFLOAT: | |
10530 | case OP_LAST: | |
10531 | case OP_COMPLEX: | |
10532 | case OP_STRING: | |
65d79d4b SDJ |
10533 | case OP_ARRAY: |
10534 | case OP_TYPE: | |
608b4967 TT |
10535 | case OP_TYPEOF: |
10536 | case OP_DECLTYPE: | |
6e72ca20 | 10537 | case OP_TYPEID: |
65d79d4b SDJ |
10538 | case OP_NAME: |
10539 | case OP_OBJC_NSSTRING: | |
10540 | ||
10541 | case UNOP_NEG: | |
10542 | case UNOP_LOGICAL_NOT: | |
10543 | case UNOP_COMPLEMENT: | |
10544 | case UNOP_ADDR: | |
10545 | case UNOP_HIGH: | |
aeaa2474 | 10546 | case UNOP_CAST: |
9eaf6705 TT |
10547 | |
10548 | case UNOP_CAST_TYPE: | |
10549 | case UNOP_REINTERPRET_CAST: | |
10550 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10551 | /* Unary, binary and ternary operators: We have to check |
10552 | their operands. If they are constant, then so is the | |
10553 | result of that operation. For instance, if A and B are | |
10554 | determined to be constants, then so is "A + B". | |
10555 | ||
10556 | UNOP_IND is one exception to the rule above, because the | |
10557 | value of *ADDR is not necessarily a constant, even when | |
10558 | ADDR is. */ | |
65d79d4b SDJ |
10559 | break; |
10560 | ||
10561 | case OP_VAR_VALUE: | |
10562 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10563 | |
65d79d4b | 10564 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10565 | possible that a buggy compiler could mark a variable as |
10566 | constant even when it is not, and TYPE_CONST would return | |
10567 | true in this case, while SYMBOL_CLASS wouldn't. | |
10568 | ||
10569 | We also have to check for function symbols because they | |
10570 | are always constant. */ | |
65d79d4b SDJ |
10571 | { |
10572 | struct symbol *s = exp->elts[i + 2].symbol; | |
10573 | ||
10574 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10575 | && SYMBOL_CLASS (s) != LOC_CONST | |
10576 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10577 | return 0; | |
10578 | break; | |
10579 | } | |
10580 | ||
10581 | /* The default action is to return 0 because we are using | |
10582 | the optimistic approach here: If we don't know something, | |
10583 | then it is not a constant. */ | |
10584 | default: | |
10585 | return 0; | |
10586 | } | |
10587 | } | |
10588 | ||
10589 | return 1; | |
10590 | } | |
10591 | ||
3a5c3e22 PA |
10592 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10593 | ||
10594 | static void | |
10595 | dtor_watchpoint (struct breakpoint *self) | |
10596 | { | |
10597 | struct watchpoint *w = (struct watchpoint *) self; | |
10598 | ||
10599 | xfree (w->cond_exp); | |
10600 | xfree (w->exp); | |
10601 | xfree (w->exp_string); | |
10602 | xfree (w->exp_string_reparse); | |
10603 | value_free (w->val); | |
10604 | ||
10605 | base_breakpoint_ops.dtor (self); | |
10606 | } | |
10607 | ||
348d480f PA |
10608 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10609 | ||
10610 | static void | |
10611 | re_set_watchpoint (struct breakpoint *b) | |
10612 | { | |
3a5c3e22 PA |
10613 | struct watchpoint *w = (struct watchpoint *) b; |
10614 | ||
348d480f PA |
10615 | /* Watchpoint can be either on expression using entirely global |
10616 | variables, or it can be on local variables. | |
10617 | ||
10618 | Watchpoints of the first kind are never auto-deleted, and even | |
10619 | persist across program restarts. Since they can use variables | |
10620 | from shared libraries, we need to reparse expression as libraries | |
10621 | are loaded and unloaded. | |
10622 | ||
10623 | Watchpoints on local variables can also change meaning as result | |
10624 | of solib event. For example, if a watchpoint uses both a local | |
10625 | and a global variables in expression, it's a local watchpoint, | |
10626 | but unloading of a shared library will make the expression | |
10627 | invalid. This is not a very common use case, but we still | |
10628 | re-evaluate expression, to avoid surprises to the user. | |
10629 | ||
10630 | Note that for local watchpoints, we re-evaluate it only if | |
10631 | watchpoints frame id is still valid. If it's not, it means the | |
10632 | watchpoint is out of scope and will be deleted soon. In fact, | |
10633 | I'm not sure we'll ever be called in this case. | |
10634 | ||
10635 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10636 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10637 | |
3a5c3e22 PA |
10638 | Don't do anything about disabled watchpoints, since they will be |
10639 | reevaluated again when enabled. */ | |
10640 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10641 | } |
10642 | ||
77b06cd7 TJB |
10643 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10644 | ||
10645 | static int | |
10646 | insert_watchpoint (struct bp_location *bl) | |
10647 | { | |
3a5c3e22 PA |
10648 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10649 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10650 | |
10651 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10652 | w->cond_exp); |
77b06cd7 TJB |
10653 | } |
10654 | ||
10655 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10656 | ||
10657 | static int | |
10658 | remove_watchpoint (struct bp_location *bl) | |
10659 | { | |
3a5c3e22 PA |
10660 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10661 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10662 | |
10663 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10664 | w->cond_exp); |
e09342b5 TJB |
10665 | } |
10666 | ||
e09342b5 | 10667 | static int |
348d480f | 10668 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10669 | struct address_space *aspace, CORE_ADDR bp_addr, |
10670 | const struct target_waitstatus *ws) | |
e09342b5 | 10671 | { |
348d480f | 10672 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10673 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10674 | |
348d480f PA |
10675 | /* Continuable hardware watchpoints are treated as non-existent if the |
10676 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10677 | some data address). Otherwise gdb won't stop on a break instruction | |
10678 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10679 | been defined. Also skip watchpoints which we know did not trigger | |
10680 | (did not match the data address). */ | |
10681 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10682 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10683 | return 0; |
9c06b0b4 | 10684 | |
348d480f | 10685 | return 1; |
9c06b0b4 TJB |
10686 | } |
10687 | ||
348d480f PA |
10688 | static void |
10689 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10690 | { |
348d480f | 10691 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10692 | |
348d480f | 10693 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10694 | } |
10695 | ||
10696 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10697 | hardware watchpoints. */ |
9c06b0b4 TJB |
10698 | |
10699 | static int | |
348d480f | 10700 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10701 | { |
3a5c3e22 PA |
10702 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10703 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10704 | |
10705 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10706 | } |
10707 | ||
10708 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10709 | hardware watchpoints. */ |
9c06b0b4 TJB |
10710 | |
10711 | static int | |
348d480f | 10712 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10713 | { |
efa80663 PA |
10714 | /* Read and access watchpoints only work with hardware support. */ |
10715 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10716 | } |
10717 | ||
9c06b0b4 | 10718 | static enum print_stop_action |
348d480f | 10719 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10720 | { |
348d480f PA |
10721 | struct cleanup *old_chain; |
10722 | struct breakpoint *b; | |
f99d8bf4 | 10723 | struct ui_file *stb; |
348d480f | 10724 | enum print_stop_action result; |
3a5c3e22 | 10725 | struct watchpoint *w; |
79a45e25 | 10726 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10727 | |
10728 | gdb_assert (bs->bp_location_at != NULL); | |
10729 | ||
348d480f | 10730 | b = bs->breakpoint_at; |
3a5c3e22 | 10731 | w = (struct watchpoint *) b; |
348d480f | 10732 | |
f99d8bf4 PA |
10733 | stb = mem_fileopen (); |
10734 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10735 | |
10736 | switch (b->type) | |
10737 | { | |
348d480f | 10738 | case bp_watchpoint: |
9c06b0b4 TJB |
10739 | case bp_hardware_watchpoint: |
10740 | annotate_watchpoint (b->number); | |
10741 | if (ui_out_is_mi_like_p (uiout)) | |
10742 | ui_out_field_string | |
10743 | (uiout, "reason", | |
10744 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10745 | mention (b); |
10746 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10747 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10748 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10749 | ui_out_field_stream (uiout, "old", stb); |
10750 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10751 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10752 | ui_out_field_stream (uiout, "new", stb); |
10753 | ui_out_text (uiout, "\n"); | |
10754 | /* More than one watchpoint may have been triggered. */ | |
10755 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10756 | break; |
10757 | ||
10758 | case bp_read_watchpoint: | |
10759 | if (ui_out_is_mi_like_p (uiout)) | |
10760 | ui_out_field_string | |
10761 | (uiout, "reason", | |
10762 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10763 | mention (b); |
10764 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10765 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10766 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10767 | ui_out_field_stream (uiout, "value", stb); |
10768 | ui_out_text (uiout, "\n"); | |
10769 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10770 | break; |
10771 | ||
10772 | case bp_access_watchpoint: | |
348d480f PA |
10773 | if (bs->old_val != NULL) |
10774 | { | |
10775 | annotate_watchpoint (b->number); | |
10776 | if (ui_out_is_mi_like_p (uiout)) | |
10777 | ui_out_field_string | |
10778 | (uiout, "reason", | |
10779 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10780 | mention (b); | |
10781 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10782 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10783 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10784 | ui_out_field_stream (uiout, "old", stb); |
10785 | ui_out_text (uiout, "\nNew value = "); | |
10786 | } | |
10787 | else | |
10788 | { | |
10789 | mention (b); | |
10790 | if (ui_out_is_mi_like_p (uiout)) | |
10791 | ui_out_field_string | |
10792 | (uiout, "reason", | |
10793 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10794 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10795 | ui_out_text (uiout, "\nValue = "); | |
10796 | } | |
f99d8bf4 | 10797 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10798 | ui_out_field_stream (uiout, "new", stb); |
10799 | ui_out_text (uiout, "\n"); | |
10800 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10801 | break; |
10802 | default: | |
348d480f | 10803 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10804 | } |
10805 | ||
348d480f PA |
10806 | do_cleanups (old_chain); |
10807 | return result; | |
10808 | } | |
10809 | ||
10810 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10811 | watchpoints. */ | |
10812 | ||
10813 | static void | |
10814 | print_mention_watchpoint (struct breakpoint *b) | |
10815 | { | |
10816 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10817 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10818 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10819 | |
10820 | switch (b->type) | |
10821 | { | |
10822 | case bp_watchpoint: | |
10823 | ui_out_text (uiout, "Watchpoint "); | |
10824 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10825 | break; | |
10826 | case bp_hardware_watchpoint: | |
10827 | ui_out_text (uiout, "Hardware watchpoint "); | |
10828 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10829 | break; | |
10830 | case bp_read_watchpoint: | |
10831 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10832 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10833 | break; | |
10834 | case bp_access_watchpoint: | |
10835 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10836 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10837 | break; | |
10838 | default: | |
10839 | internal_error (__FILE__, __LINE__, | |
10840 | _("Invalid hardware watchpoint type.")); | |
10841 | } | |
10842 | ||
10843 | ui_out_field_int (uiout, "number", b->number); | |
10844 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10845 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10846 | do_cleanups (ui_out_chain); |
10847 | } | |
10848 | ||
10849 | /* Implement the "print_recreate" breakpoint_ops method for | |
10850 | watchpoints. */ | |
10851 | ||
10852 | static void | |
10853 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10854 | { | |
3a5c3e22 PA |
10855 | struct watchpoint *w = (struct watchpoint *) b; |
10856 | ||
348d480f PA |
10857 | switch (b->type) |
10858 | { | |
10859 | case bp_watchpoint: | |
10860 | case bp_hardware_watchpoint: | |
10861 | fprintf_unfiltered (fp, "watch"); | |
10862 | break; | |
10863 | case bp_read_watchpoint: | |
10864 | fprintf_unfiltered (fp, "rwatch"); | |
10865 | break; | |
10866 | case bp_access_watchpoint: | |
10867 | fprintf_unfiltered (fp, "awatch"); | |
10868 | break; | |
10869 | default: | |
10870 | internal_error (__FILE__, __LINE__, | |
10871 | _("Invalid watchpoint type.")); | |
10872 | } | |
10873 | ||
3a5c3e22 | 10874 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10875 | print_recreate_thread (b, fp); |
348d480f PA |
10876 | } |
10877 | ||
427cd150 TT |
10878 | /* Implement the "explains_signal" breakpoint_ops method for |
10879 | watchpoints. */ | |
10880 | ||
47591c29 | 10881 | static int |
427cd150 TT |
10882 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) |
10883 | { | |
10884 | /* A software watchpoint cannot cause a signal other than | |
10885 | GDB_SIGNAL_TRAP. */ | |
10886 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
47591c29 | 10887 | return 0; |
427cd150 | 10888 | |
47591c29 | 10889 | return 1; |
427cd150 TT |
10890 | } |
10891 | ||
348d480f PA |
10892 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10893 | ||
2060206e | 10894 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10895 | |
10896 | /* Implement the "insert" breakpoint_ops method for | |
10897 | masked hardware watchpoints. */ | |
10898 | ||
10899 | static int | |
10900 | insert_masked_watchpoint (struct bp_location *bl) | |
10901 | { | |
3a5c3e22 PA |
10902 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10903 | ||
10904 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10905 | bl->watchpoint_type); |
10906 | } | |
10907 | ||
10908 | /* Implement the "remove" breakpoint_ops method for | |
10909 | masked hardware watchpoints. */ | |
10910 | ||
10911 | static int | |
10912 | remove_masked_watchpoint (struct bp_location *bl) | |
10913 | { | |
3a5c3e22 PA |
10914 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10915 | ||
10916 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10917 | bl->watchpoint_type); |
10918 | } | |
10919 | ||
10920 | /* Implement the "resources_needed" breakpoint_ops method for | |
10921 | masked hardware watchpoints. */ | |
10922 | ||
10923 | static int | |
10924 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10925 | { | |
3a5c3e22 PA |
10926 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10927 | ||
10928 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10929 | } |
10930 | ||
10931 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10932 | masked hardware watchpoints. */ | |
10933 | ||
10934 | static int | |
10935 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10936 | { | |
10937 | return 0; | |
10938 | } | |
10939 | ||
10940 | /* Implement the "print_it" breakpoint_ops method for | |
10941 | masked hardware watchpoints. */ | |
10942 | ||
10943 | static enum print_stop_action | |
10944 | print_it_masked_watchpoint (bpstat bs) | |
10945 | { | |
10946 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10947 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10948 | |
10949 | /* Masked watchpoints have only one location. */ | |
10950 | gdb_assert (b->loc && b->loc->next == NULL); | |
10951 | ||
10952 | switch (b->type) | |
10953 | { | |
10954 | case bp_hardware_watchpoint: | |
10955 | annotate_watchpoint (b->number); | |
10956 | if (ui_out_is_mi_like_p (uiout)) | |
10957 | ui_out_field_string | |
10958 | (uiout, "reason", | |
10959 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10960 | break; | |
10961 | ||
10962 | case bp_read_watchpoint: | |
10963 | if (ui_out_is_mi_like_p (uiout)) | |
10964 | ui_out_field_string | |
10965 | (uiout, "reason", | |
10966 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10967 | break; | |
10968 | ||
10969 | case bp_access_watchpoint: | |
10970 | if (ui_out_is_mi_like_p (uiout)) | |
10971 | ui_out_field_string | |
10972 | (uiout, "reason", | |
10973 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10974 | break; | |
10975 | default: | |
10976 | internal_error (__FILE__, __LINE__, | |
10977 | _("Invalid hardware watchpoint type.")); | |
10978 | } | |
10979 | ||
10980 | mention (b); | |
9c06b0b4 TJB |
10981 | ui_out_text (uiout, _("\n\ |
10982 | Check the underlying instruction at PC for the memory\n\ | |
10983 | address and value which triggered this watchpoint.\n")); | |
10984 | ui_out_text (uiout, "\n"); | |
10985 | ||
10986 | /* More than one watchpoint may have been triggered. */ | |
10987 | return PRINT_UNKNOWN; | |
10988 | } | |
10989 | ||
10990 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10991 | masked hardware watchpoints. */ | |
10992 | ||
10993 | static void | |
10994 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10995 | struct ui_out *uiout) | |
10996 | { | |
3a5c3e22 PA |
10997 | struct watchpoint *w = (struct watchpoint *) b; |
10998 | ||
9c06b0b4 TJB |
10999 | /* Masked watchpoints have only one location. */ |
11000 | gdb_assert (b->loc && b->loc->next == NULL); | |
11001 | ||
11002 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 11003 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
11004 | ui_out_text (uiout, "\n"); |
11005 | } | |
11006 | ||
11007 | /* Implement the "print_mention" breakpoint_ops method for | |
11008 | masked hardware watchpoints. */ | |
11009 | ||
11010 | static void | |
11011 | print_mention_masked_watchpoint (struct breakpoint *b) | |
11012 | { | |
3a5c3e22 | 11013 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 11014 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
11015 | struct cleanup *ui_out_chain; |
11016 | ||
11017 | switch (b->type) | |
11018 | { | |
11019 | case bp_hardware_watchpoint: | |
11020 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
11021 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
11022 | break; | |
11023 | case bp_read_watchpoint: | |
11024 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
11025 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
11026 | break; | |
11027 | case bp_access_watchpoint: | |
11028 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
11029 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
11030 | break; | |
11031 | default: | |
11032 | internal_error (__FILE__, __LINE__, | |
11033 | _("Invalid hardware watchpoint type.")); | |
11034 | } | |
11035 | ||
11036 | ui_out_field_int (uiout, "number", b->number); | |
11037 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 11038 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
11039 | do_cleanups (ui_out_chain); |
11040 | } | |
11041 | ||
11042 | /* Implement the "print_recreate" breakpoint_ops method for | |
11043 | masked hardware watchpoints. */ | |
11044 | ||
11045 | static void | |
11046 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
11047 | { | |
3a5c3e22 | 11048 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
11049 | char tmp[40]; |
11050 | ||
11051 | switch (b->type) | |
11052 | { | |
11053 | case bp_hardware_watchpoint: | |
11054 | fprintf_unfiltered (fp, "watch"); | |
11055 | break; | |
11056 | case bp_read_watchpoint: | |
11057 | fprintf_unfiltered (fp, "rwatch"); | |
11058 | break; | |
11059 | case bp_access_watchpoint: | |
11060 | fprintf_unfiltered (fp, "awatch"); | |
11061 | break; | |
11062 | default: | |
11063 | internal_error (__FILE__, __LINE__, | |
11064 | _("Invalid hardware watchpoint type.")); | |
11065 | } | |
11066 | ||
3a5c3e22 PA |
11067 | sprintf_vma (tmp, w->hw_wp_mask); |
11068 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 11069 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
11070 | } |
11071 | ||
11072 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
11073 | ||
2060206e | 11074 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
11075 | |
11076 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
11077 | ||
11078 | static int | |
11079 | is_masked_watchpoint (const struct breakpoint *b) | |
11080 | { | |
11081 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
11082 | } | |
11083 | ||
53a5351d JM |
11084 | /* accessflag: hw_write: watch write, |
11085 | hw_read: watch read, | |
11086 | hw_access: watch access (read or write) */ | |
c906108c | 11087 | static void |
bbc13ae3 | 11088 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 11089 | int just_location, int internal) |
c906108c | 11090 | { |
a9634178 | 11091 | volatile struct gdb_exception e; |
d983da9c | 11092 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 11093 | struct expression *exp; |
270140bd | 11094 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 11095 | struct value *val, *mark, *result; |
c906108c | 11096 | struct frame_info *frame; |
bbc13ae3 KS |
11097 | const char *exp_start = NULL; |
11098 | const char *exp_end = NULL; | |
11099 | const char *tok, *end_tok; | |
9c06b0b4 | 11100 | int toklen = -1; |
bbc13ae3 KS |
11101 | const char *cond_start = NULL; |
11102 | const char *cond_end = NULL; | |
c906108c | 11103 | enum bptype bp_type; |
37e4754d | 11104 | int thread = -1; |
0cf6dd15 | 11105 | int pc = 0; |
9c06b0b4 TJB |
11106 | /* Flag to indicate whether we are going to use masks for |
11107 | the hardware watchpoint. */ | |
11108 | int use_mask = 0; | |
11109 | CORE_ADDR mask = 0; | |
3a5c3e22 | 11110 | struct watchpoint *w; |
bbc13ae3 KS |
11111 | char *expression; |
11112 | struct cleanup *back_to; | |
c906108c | 11113 | |
37e4754d LM |
11114 | /* Make sure that we actually have parameters to parse. */ |
11115 | if (arg != NULL && arg[0] != '\0') | |
11116 | { | |
bbc13ae3 KS |
11117 | const char *value_start; |
11118 | ||
11119 | exp_end = arg + strlen (arg); | |
37e4754d | 11120 | |
9c06b0b4 TJB |
11121 | /* Look for "parameter value" pairs at the end |
11122 | of the arguments string. */ | |
bbc13ae3 | 11123 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
11124 | { |
11125 | /* Skip whitespace at the end of the argument list. */ | |
11126 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11127 | tok--; | |
11128 | ||
11129 | /* Find the beginning of the last token. | |
11130 | This is the value of the parameter. */ | |
11131 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11132 | tok--; | |
11133 | value_start = tok + 1; | |
11134 | ||
11135 | /* Skip whitespace. */ | |
11136 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
11137 | tok--; | |
11138 | ||
11139 | end_tok = tok; | |
11140 | ||
11141 | /* Find the beginning of the second to last token. | |
11142 | This is the parameter itself. */ | |
11143 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
11144 | tok--; | |
11145 | tok++; | |
11146 | toklen = end_tok - tok + 1; | |
11147 | ||
11148 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
11149 | { | |
11150 | /* At this point we've found a "thread" token, which means | |
11151 | the user is trying to set a watchpoint that triggers | |
11152 | only in a specific thread. */ | |
11153 | char *endp; | |
37e4754d | 11154 | |
9c06b0b4 TJB |
11155 | if (thread != -1) |
11156 | error(_("You can specify only one thread.")); | |
37e4754d | 11157 | |
9c06b0b4 TJB |
11158 | /* Extract the thread ID from the next token. */ |
11159 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 11160 | |
9c06b0b4 TJB |
11161 | /* Check if the user provided a valid numeric value for the |
11162 | thread ID. */ | |
11163 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
11164 | error (_("Invalid thread ID specification %s."), value_start); | |
11165 | ||
11166 | /* Check if the thread actually exists. */ | |
11167 | if (!valid_thread_id (thread)) | |
af4908ba | 11168 | invalid_thread_id_error (thread); |
9c06b0b4 TJB |
11169 | } |
11170 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
11171 | { | |
11172 | /* We've found a "mask" token, which means the user wants to | |
11173 | create a hardware watchpoint that is going to have the mask | |
11174 | facility. */ | |
11175 | struct value *mask_value, *mark; | |
37e4754d | 11176 | |
9c06b0b4 TJB |
11177 | if (use_mask) |
11178 | error(_("You can specify only one mask.")); | |
37e4754d | 11179 | |
9c06b0b4 | 11180 | use_mask = just_location = 1; |
37e4754d | 11181 | |
9c06b0b4 TJB |
11182 | mark = value_mark (); |
11183 | mask_value = parse_to_comma_and_eval (&value_start); | |
11184 | mask = value_as_address (mask_value); | |
11185 | value_free_to_mark (mark); | |
11186 | } | |
11187 | else | |
11188 | /* We didn't recognize what we found. We should stop here. */ | |
11189 | break; | |
37e4754d | 11190 | |
9c06b0b4 TJB |
11191 | /* Truncate the string and get rid of the "parameter value" pair before |
11192 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 11193 | exp_end = tok; |
9c06b0b4 | 11194 | } |
37e4754d | 11195 | } |
bbc13ae3 KS |
11196 | else |
11197 | exp_end = arg; | |
37e4754d | 11198 | |
bbc13ae3 KS |
11199 | /* Parse the rest of the arguments. From here on out, everything |
11200 | is in terms of a newly allocated string instead of the original | |
11201 | ARG. */ | |
c906108c | 11202 | innermost_block = NULL; |
bbc13ae3 KS |
11203 | expression = savestring (arg, exp_end - arg); |
11204 | back_to = make_cleanup (xfree, expression); | |
11205 | exp_start = arg = expression; | |
1bb9788d | 11206 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 11207 | exp_end = arg; |
fa8a61dc TT |
11208 | /* Remove trailing whitespace from the expression before saving it. |
11209 | This makes the eventual display of the expression string a bit | |
11210 | prettier. */ | |
11211 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
11212 | --exp_end; | |
11213 | ||
65d79d4b SDJ |
11214 | /* Checking if the expression is not constant. */ |
11215 | if (watchpoint_exp_is_const (exp)) | |
11216 | { | |
11217 | int len; | |
11218 | ||
11219 | len = exp_end - exp_start; | |
11220 | while (len > 0 && isspace (exp_start[len - 1])) | |
11221 | len--; | |
11222 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
11223 | } | |
11224 | ||
c906108c SS |
11225 | exp_valid_block = innermost_block; |
11226 | mark = value_mark (); | |
3a1115a0 | 11227 | fetch_subexp_value (exp, &pc, &val, &result, NULL, just_location); |
06a64a0b TT |
11228 | |
11229 | if (just_location) | |
11230 | { | |
9c06b0b4 TJB |
11231 | int ret; |
11232 | ||
06a64a0b | 11233 | exp_valid_block = NULL; |
a1442452 | 11234 | val = value_addr (result); |
06a64a0b TT |
11235 | release_value (val); |
11236 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
11237 | |
11238 | if (use_mask) | |
11239 | { | |
11240 | ret = target_masked_watch_num_registers (value_as_address (val), | |
11241 | mask); | |
11242 | if (ret == -1) | |
11243 | error (_("This target does not support masked watchpoints.")); | |
11244 | else if (ret == -2) | |
11245 | error (_("Invalid mask or memory region.")); | |
11246 | } | |
06a64a0b TT |
11247 | } |
11248 | else if (val != NULL) | |
fa4727a6 | 11249 | release_value (val); |
c906108c | 11250 | |
bbc13ae3 KS |
11251 | tok = skip_spaces_const (arg); |
11252 | end_tok = skip_to_space_const (tok); | |
c906108c SS |
11253 | |
11254 | toklen = end_tok - tok; | |
11255 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
11256 | { | |
2d134ed3 PA |
11257 | struct expression *cond; |
11258 | ||
60e1c644 | 11259 | innermost_block = NULL; |
c906108c | 11260 | tok = cond_start = end_tok + 1; |
1bb9788d | 11261 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
11262 | |
11263 | /* The watchpoint expression may not be local, but the condition | |
11264 | may still be. E.g.: `watch global if local > 0'. */ | |
11265 | cond_exp_valid_block = innermost_block; | |
11266 | ||
2d134ed3 | 11267 | xfree (cond); |
c906108c SS |
11268 | cond_end = tok; |
11269 | } | |
11270 | if (*tok) | |
8a3fe4f8 | 11271 | error (_("Junk at end of command.")); |
c906108c | 11272 | |
d983da9c | 11273 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
11274 | |
11275 | /* If the expression is "local", then set up a "watchpoint scope" | |
11276 | breakpoint at the point where we've left the scope of the watchpoint | |
11277 | expression. Create the scope breakpoint before the watchpoint, so | |
11278 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 11279 | if (exp_valid_block && frame) |
d983da9c | 11280 | { |
edb3359d DJ |
11281 | if (frame_id_p (frame_unwind_caller_id (frame))) |
11282 | { | |
11283 | scope_breakpoint | |
a6d9a66e UW |
11284 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
11285 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
11286 | bp_watchpoint_scope, |
11287 | &momentary_breakpoint_ops); | |
d983da9c | 11288 | |
edb3359d | 11289 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 11290 | |
edb3359d DJ |
11291 | /* Automatically delete the breakpoint when it hits. */ |
11292 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 11293 | |
edb3359d DJ |
11294 | /* Only break in the proper frame (help with recursion). */ |
11295 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 11296 | |
edb3359d | 11297 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
11298 | scope_breakpoint->loc->gdbarch |
11299 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
11300 | scope_breakpoint->loc->requested_address |
11301 | = frame_unwind_caller_pc (frame); | |
11302 | scope_breakpoint->loc->address | |
a6d9a66e UW |
11303 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
11304 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11305 | scope_breakpoint->type); |
11306 | } | |
d983da9c DJ |
11307 | } |
11308 | ||
e8369a73 AB |
11309 | /* Now set up the breakpoint. We create all watchpoints as hardware |
11310 | watchpoints here even if hardware watchpoints are turned off, a call | |
11311 | to update_watchpoint later in this function will cause the type to | |
11312 | drop back to bp_watchpoint (software watchpoint) if required. */ | |
11313 | ||
11314 | if (accessflag == hw_read) | |
11315 | bp_type = bp_read_watchpoint; | |
11316 | else if (accessflag == hw_access) | |
11317 | bp_type = bp_access_watchpoint; | |
11318 | else | |
11319 | bp_type = bp_hardware_watchpoint; | |
3a5c3e22 PA |
11320 | |
11321 | w = XCNEW (struct watchpoint); | |
11322 | b = &w->base; | |
348d480f | 11323 | if (use_mask) |
3a5c3e22 PA |
11324 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11325 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 11326 | else |
3a5c3e22 PA |
11327 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11328 | &watchpoint_breakpoint_ops); | |
37e4754d | 11329 | b->thread = thread; |
b5de0fa7 | 11330 | b->disposition = disp_donttouch; |
348d480f | 11331 | b->pspace = current_program_space; |
3a5c3e22 PA |
11332 | w->exp = exp; |
11333 | w->exp_valid_block = exp_valid_block; | |
11334 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11335 | if (just_location) |
11336 | { | |
11337 | struct type *t = value_type (val); | |
11338 | CORE_ADDR addr = value_as_address (val); | |
11339 | char *name; | |
11340 | ||
11341 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
11342 | name = type_to_string (t); | |
11343 | ||
3a5c3e22 | 11344 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 11345 | core_addr_to_string (addr)); |
06a64a0b TT |
11346 | xfree (name); |
11347 | ||
3a5c3e22 | 11348 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
11349 | (int) (exp_end - exp_start), exp_start); |
11350 | ||
06a64a0b TT |
11351 | /* The above expression is in C. */ |
11352 | b->language = language_c; | |
11353 | } | |
11354 | else | |
3a5c3e22 | 11355 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11356 | |
11357 | if (use_mask) | |
11358 | { | |
3a5c3e22 | 11359 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11360 | } |
11361 | else | |
11362 | { | |
3a5c3e22 PA |
11363 | w->val = val; |
11364 | w->val_valid = 1; | |
9c06b0b4 | 11365 | } |
77b06cd7 | 11366 | |
c906108c SS |
11367 | if (cond_start) |
11368 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11369 | else | |
11370 | b->cond_string = 0; | |
c5aa993b | 11371 | |
c906108c | 11372 | if (frame) |
f6bc2008 | 11373 | { |
3a5c3e22 PA |
11374 | w->watchpoint_frame = get_frame_id (frame); |
11375 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11376 | } |
c906108c | 11377 | else |
f6bc2008 | 11378 | { |
3a5c3e22 PA |
11379 | w->watchpoint_frame = null_frame_id; |
11380 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11381 | } |
c906108c | 11382 | |
d983da9c | 11383 | if (scope_breakpoint != NULL) |
c906108c | 11384 | { |
d983da9c DJ |
11385 | /* The scope breakpoint is related to the watchpoint. We will |
11386 | need to act on them together. */ | |
11387 | b->related_breakpoint = scope_breakpoint; | |
11388 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11389 | } |
d983da9c | 11390 | |
06a64a0b TT |
11391 | if (!just_location) |
11392 | value_free_to_mark (mark); | |
2d134ed3 | 11393 | |
a9634178 TJB |
11394 | TRY_CATCH (e, RETURN_MASK_ALL) |
11395 | { | |
11396 | /* Finally update the new watchpoint. This creates the locations | |
11397 | that should be inserted. */ | |
3a5c3e22 | 11398 | update_watchpoint (w, 1); |
a9634178 TJB |
11399 | } |
11400 | if (e.reason < 0) | |
11401 | { | |
11402 | delete_breakpoint (b); | |
11403 | throw_exception (e); | |
11404 | } | |
11405 | ||
3ea46bff | 11406 | install_breakpoint (internal, b, 1); |
bbc13ae3 | 11407 | do_cleanups (back_to); |
c906108c SS |
11408 | } |
11409 | ||
e09342b5 | 11410 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11411 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11412 | |
c906108c | 11413 | static int |
a9634178 | 11414 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11415 | { |
11416 | int found_memory_cnt = 0; | |
2e70b7b9 | 11417 | struct value *head = v; |
c906108c SS |
11418 | |
11419 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11420 | if (!can_use_hw_watchpoints) |
c906108c | 11421 | return 0; |
c5aa993b | 11422 | |
5c44784c JM |
11423 | /* Make sure that the value of the expression depends only upon |
11424 | memory contents, and values computed from them within GDB. If we | |
11425 | find any register references or function calls, we can't use a | |
11426 | hardware watchpoint. | |
11427 | ||
11428 | The idea here is that evaluating an expression generates a series | |
11429 | of values, one holding the value of every subexpression. (The | |
11430 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11431 | a*b+c.) GDB's values hold almost enough information to establish | |
11432 | the criteria given above --- they identify memory lvalues, | |
11433 | register lvalues, computed values, etcetera. So we can evaluate | |
11434 | the expression, and then scan the chain of values that leaves | |
11435 | behind to decide whether we can detect any possible change to the | |
11436 | expression's final value using only hardware watchpoints. | |
11437 | ||
11438 | However, I don't think that the values returned by inferior | |
11439 | function calls are special in any way. So this function may not | |
11440 | notice that an expression involving an inferior function call | |
11441 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11442 | for (; v; v = value_next (v)) |
c906108c | 11443 | { |
5c44784c | 11444 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11445 | { |
8464be76 DJ |
11446 | if (v != head && value_lazy (v)) |
11447 | /* A lazy memory lvalue in the chain is one that GDB never | |
11448 | needed to fetch; we either just used its address (e.g., | |
11449 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11450 | in `a,b'). This doesn't apply to HEAD; if that is | |
11451 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11452 | ; |
53a5351d | 11453 | else |
5c44784c JM |
11454 | { |
11455 | /* Ahh, memory we actually used! Check if we can cover | |
11456 | it with hardware watchpoints. */ | |
df407dfe | 11457 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11458 | |
11459 | /* We only watch structs and arrays if user asked for it | |
11460 | explicitly, never if they just happen to appear in a | |
11461 | middle of some value chain. */ | |
11462 | if (v == head | |
11463 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11464 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11465 | { | |
42ae5230 | 11466 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11467 | int len; |
11468 | int num_regs; | |
11469 | ||
a9634178 | 11470 | len = (target_exact_watchpoints |
e09342b5 TJB |
11471 | && is_scalar_type_recursive (vtype))? |
11472 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11473 | |
e09342b5 TJB |
11474 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11475 | if (!num_regs) | |
2e70b7b9 MS |
11476 | return 0; |
11477 | else | |
e09342b5 | 11478 | found_memory_cnt += num_regs; |
2e70b7b9 | 11479 | } |
5c44784c | 11480 | } |
c5aa993b | 11481 | } |
5086187c AC |
11482 | else if (VALUE_LVAL (v) != not_lval |
11483 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11484 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11485 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11486 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11487 | } |
11488 | ||
11489 | /* The expression itself looks suitable for using a hardware | |
11490 | watchpoint, but give the target machine a chance to reject it. */ | |
11491 | return found_memory_cnt; | |
11492 | } | |
11493 | ||
8b93c638 | 11494 | void |
84f4c1fe | 11495 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11496 | { |
84f4c1fe | 11497 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11498 | } |
11499 | ||
06a64a0b TT |
11500 | /* A helper function that looks for the "-location" argument and then |
11501 | calls watch_command_1. */ | |
11502 | ||
11503 | static void | |
11504 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11505 | { | |
11506 | int just_location = 0; | |
11507 | ||
11508 | if (arg | |
11509 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11510 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11511 | { | |
e9cafbcc | 11512 | arg = skip_spaces (arg); |
06a64a0b TT |
11513 | just_location = 1; |
11514 | } | |
11515 | ||
84f4c1fe | 11516 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11517 | } |
8926118c | 11518 | |
c5aa993b | 11519 | static void |
fba45db2 | 11520 | watch_command (char *arg, int from_tty) |
c906108c | 11521 | { |
06a64a0b | 11522 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11523 | } |
11524 | ||
8b93c638 | 11525 | void |
84f4c1fe | 11526 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11527 | { |
84f4c1fe | 11528 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11529 | } |
8926118c | 11530 | |
c5aa993b | 11531 | static void |
fba45db2 | 11532 | rwatch_command (char *arg, int from_tty) |
c906108c | 11533 | { |
06a64a0b | 11534 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11535 | } |
11536 | ||
8b93c638 | 11537 | void |
84f4c1fe | 11538 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11539 | { |
84f4c1fe | 11540 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11541 | } |
8926118c | 11542 | |
c5aa993b | 11543 | static void |
fba45db2 | 11544 | awatch_command (char *arg, int from_tty) |
c906108c | 11545 | { |
06a64a0b | 11546 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11547 | } |
c906108c | 11548 | \f |
c5aa993b | 11549 | |
43ff13b4 | 11550 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11551 | because it uses the mechanisms of breakpoints. */ |
11552 | ||
bfec99b2 PA |
11553 | struct until_break_command_continuation_args |
11554 | { | |
11555 | struct breakpoint *breakpoint; | |
11556 | struct breakpoint *breakpoint2; | |
186c406b | 11557 | int thread_num; |
bfec99b2 PA |
11558 | }; |
11559 | ||
43ff13b4 | 11560 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11561 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11562 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11563 | command. */ |
c2c6d25f | 11564 | static void |
fa4cd53f | 11565 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11566 | { |
bfec99b2 PA |
11567 | struct until_break_command_continuation_args *a = arg; |
11568 | ||
11569 | delete_breakpoint (a->breakpoint); | |
11570 | if (a->breakpoint2) | |
11571 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11572 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11573 | } |
11574 | ||
c906108c | 11575 | void |
ae66c1fc | 11576 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11577 | { |
11578 | struct symtabs_and_lines sals; | |
11579 | struct symtab_and_line sal; | |
8556afb4 PA |
11580 | struct frame_info *frame; |
11581 | struct gdbarch *frame_gdbarch; | |
11582 | struct frame_id stack_frame_id; | |
11583 | struct frame_id caller_frame_id; | |
c906108c | 11584 | struct breakpoint *breakpoint; |
f107f563 | 11585 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 11586 | struct cleanup *old_chain; |
186c406b TT |
11587 | int thread; |
11588 | struct thread_info *tp; | |
c906108c SS |
11589 | |
11590 | clear_proceed_status (); | |
11591 | ||
11592 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11593 | this function. */ |
c5aa993b | 11594 | |
1bfeeb0f | 11595 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 11596 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11597 | get_last_displayed_symtab (), |
f8eba3c6 | 11598 | get_last_displayed_line ()); |
c906108c | 11599 | else |
f8eba3c6 TT |
11600 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
11601 | (struct symtab *) NULL, 0); | |
c5aa993b | 11602 | |
c906108c | 11603 | if (sals.nelts != 1) |
8a3fe4f8 | 11604 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11605 | |
c906108c | 11606 | sal = sals.sals[0]; |
4a64f543 | 11607 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11608 | |
c906108c | 11609 | if (*arg) |
8a3fe4f8 | 11610 | error (_("Junk at end of arguments.")); |
c5aa993b | 11611 | |
c906108c | 11612 | resolve_sal_pc (&sal); |
c5aa993b | 11613 | |
186c406b TT |
11614 | tp = inferior_thread (); |
11615 | thread = tp->num; | |
11616 | ||
883bc8d1 PA |
11617 | old_chain = make_cleanup (null_cleanup, NULL); |
11618 | ||
8556afb4 PA |
11619 | /* Note linespec handling above invalidates the frame chain. |
11620 | Installing a breakpoint also invalidates the frame chain (as it | |
11621 | may need to switch threads), so do any frame handling before | |
11622 | that. */ | |
11623 | ||
11624 | frame = get_selected_frame (NULL); | |
11625 | frame_gdbarch = get_frame_arch (frame); | |
11626 | stack_frame_id = get_stack_frame_id (frame); | |
11627 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11628 | |
ae66c1fc EZ |
11629 | /* Keep within the current frame, or in frames called by the current |
11630 | one. */ | |
edb3359d | 11631 | |
883bc8d1 | 11632 | if (frame_id_p (caller_frame_id)) |
c906108c | 11633 | { |
883bc8d1 PA |
11634 | struct symtab_and_line sal2; |
11635 | ||
11636 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11637 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11638 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11639 | sal2, |
11640 | caller_frame_id, | |
f107f563 VP |
11641 | bp_until); |
11642 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11643 | |
883bc8d1 | 11644 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11645 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11646 | } |
c5aa993b | 11647 | |
c70a6932 JK |
11648 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11649 | frame = NULL; | |
11650 | ||
883bc8d1 PA |
11651 | if (anywhere) |
11652 | /* If the user told us to continue until a specified location, | |
11653 | we don't specify a frame at which we need to stop. */ | |
11654 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11655 | null_frame_id, bp_until); | |
11656 | else | |
11657 | /* Otherwise, specify the selected frame, because we want to stop | |
11658 | only at the very same frame. */ | |
11659 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11660 | stack_frame_id, bp_until); | |
11661 | make_cleanup_delete_breakpoint (breakpoint); | |
11662 | ||
a493e3e2 | 11663 | proceed (-1, GDB_SIGNAL_DEFAULT, 0); |
f107f563 | 11664 | |
4a64f543 MS |
11665 | /* If we are running asynchronously, and proceed call above has |
11666 | actually managed to start the target, arrange for breakpoints to | |
11667 | be deleted when the target stops. Otherwise, we're already | |
11668 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11669 | |
8ea051c5 | 11670 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11671 | { |
bfec99b2 PA |
11672 | struct until_break_command_continuation_args *args; |
11673 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11674 | |
bfec99b2 PA |
11675 | args->breakpoint = breakpoint; |
11676 | args->breakpoint2 = breakpoint2; | |
186c406b | 11677 | args->thread_num = thread; |
f107f563 VP |
11678 | |
11679 | discard_cleanups (old_chain); | |
95e54da7 PA |
11680 | add_continuation (inferior_thread (), |
11681 | until_break_command_continuation, args, | |
604ead4a | 11682 | xfree); |
f107f563 VP |
11683 | } |
11684 | else | |
c5aa993b | 11685 | do_cleanups (old_chain); |
c906108c | 11686 | } |
ae66c1fc | 11687 | |
c906108c SS |
11688 | /* This function attempts to parse an optional "if <cond>" clause |
11689 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11690 | |
c906108c SS |
11691 | Else, it returns a pointer to the condition string. (It does not |
11692 | attempt to evaluate the string against a particular block.) And, | |
11693 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11694 | if clause in the arg string. */ |
53a5351d | 11695 | |
916703c0 | 11696 | char * |
fba45db2 | 11697 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11698 | { |
c5aa993b JM |
11699 | char *cond_string; |
11700 | ||
11701 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11702 | return NULL; |
c5aa993b | 11703 | |
4a64f543 | 11704 | /* Skip the "if" keyword. */ |
c906108c | 11705 | (*arg) += 2; |
c5aa993b | 11706 | |
c906108c | 11707 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11708 | condition string. */ |
e9cafbcc | 11709 | *arg = skip_spaces (*arg); |
c906108c | 11710 | cond_string = *arg; |
c5aa993b | 11711 | |
4a64f543 MS |
11712 | /* Assume that the condition occupies the remainder of the arg |
11713 | string. */ | |
c906108c | 11714 | (*arg) += strlen (cond_string); |
c5aa993b | 11715 | |
c906108c SS |
11716 | return cond_string; |
11717 | } | |
c5aa993b | 11718 | |
c906108c SS |
11719 | /* Commands to deal with catching events, such as signals, exceptions, |
11720 | process start/exit, etc. */ | |
c5aa993b JM |
11721 | |
11722 | typedef enum | |
11723 | { | |
44feb3ce TT |
11724 | catch_fork_temporary, catch_vfork_temporary, |
11725 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11726 | } |
11727 | catch_fork_kind; | |
11728 | ||
c906108c | 11729 | static void |
cc59ec59 MS |
11730 | catch_fork_command_1 (char *arg, int from_tty, |
11731 | struct cmd_list_element *command) | |
c906108c | 11732 | { |
a6d9a66e | 11733 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11734 | char *cond_string = NULL; |
44feb3ce TT |
11735 | catch_fork_kind fork_kind; |
11736 | int tempflag; | |
11737 | ||
11738 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11739 | tempflag = (fork_kind == catch_fork_temporary | |
11740 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11741 | |
44feb3ce TT |
11742 | if (!arg) |
11743 | arg = ""; | |
e9cafbcc | 11744 | arg = skip_spaces (arg); |
c5aa993b | 11745 | |
c906108c | 11746 | /* The allowed syntax is: |
c5aa993b JM |
11747 | catch [v]fork |
11748 | catch [v]fork if <cond> | |
11749 | ||
4a64f543 | 11750 | First, check if there's an if clause. */ |
c906108c | 11751 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11752 | |
c906108c | 11753 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11754 | error (_("Junk at end of arguments.")); |
c5aa993b | 11755 | |
c906108c | 11756 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11757 | and enable reporting of such events. */ |
c5aa993b JM |
11758 | switch (fork_kind) |
11759 | { | |
44feb3ce TT |
11760 | case catch_fork_temporary: |
11761 | case catch_fork_permanent: | |
a6d9a66e | 11762 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11763 | &catch_fork_breakpoint_ops); |
c906108c | 11764 | break; |
44feb3ce TT |
11765 | case catch_vfork_temporary: |
11766 | case catch_vfork_permanent: | |
a6d9a66e | 11767 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11768 | &catch_vfork_breakpoint_ops); |
c906108c | 11769 | break; |
c5aa993b | 11770 | default: |
8a3fe4f8 | 11771 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11772 | break; |
c5aa993b | 11773 | } |
c906108c SS |
11774 | } |
11775 | ||
11776 | static void | |
cc59ec59 MS |
11777 | catch_exec_command_1 (char *arg, int from_tty, |
11778 | struct cmd_list_element *command) | |
c906108c | 11779 | { |
b4d90040 | 11780 | struct exec_catchpoint *c; |
a6d9a66e | 11781 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11782 | int tempflag; |
c5aa993b | 11783 | char *cond_string = NULL; |
c906108c | 11784 | |
44feb3ce TT |
11785 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11786 | ||
11787 | if (!arg) | |
11788 | arg = ""; | |
e9cafbcc | 11789 | arg = skip_spaces (arg); |
c906108c SS |
11790 | |
11791 | /* The allowed syntax is: | |
c5aa993b JM |
11792 | catch exec |
11793 | catch exec if <cond> | |
c906108c | 11794 | |
4a64f543 | 11795 | First, check if there's an if clause. */ |
c906108c SS |
11796 | cond_string = ep_parse_optional_if_clause (&arg); |
11797 | ||
11798 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11799 | error (_("Junk at end of arguments.")); |
c906108c | 11800 | |
b4d90040 PA |
11801 | c = XNEW (struct exec_catchpoint); |
11802 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11803 | &catch_exec_breakpoint_ops); | |
11804 | c->exec_pathname = NULL; | |
11805 | ||
3ea46bff | 11806 | install_breakpoint (0, &c->base, 1); |
c906108c | 11807 | } |
c5aa993b | 11808 | |
9ac4176b | 11809 | void |
28010a5d PA |
11810 | init_ada_exception_breakpoint (struct breakpoint *b, |
11811 | struct gdbarch *gdbarch, | |
11812 | struct symtab_and_line sal, | |
11813 | char *addr_string, | |
c0a91b2b | 11814 | const struct breakpoint_ops *ops, |
28010a5d | 11815 | int tempflag, |
349774ef | 11816 | int enabled, |
28010a5d | 11817 | int from_tty) |
f7f9143b | 11818 | { |
f7f9143b JB |
11819 | if (from_tty) |
11820 | { | |
5af949e3 UW |
11821 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11822 | if (!loc_gdbarch) | |
11823 | loc_gdbarch = gdbarch; | |
11824 | ||
6c95b8df PA |
11825 | describe_other_breakpoints (loc_gdbarch, |
11826 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11827 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11828 | version for exception catchpoints, because two catchpoints | |
11829 | used for different exception names will use the same address. | |
11830 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11831 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11832 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11833 | the user what type of catchpoint it is. The above is good |
11834 | enough for now, though. */ | |
11835 | } | |
11836 | ||
28010a5d | 11837 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b | 11838 | |
349774ef | 11839 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
f7f9143b | 11840 | b->disposition = tempflag ? disp_del : disp_donttouch; |
f7f9143b JB |
11841 | b->addr_string = addr_string; |
11842 | b->language = language_ada; | |
f7f9143b JB |
11843 | } |
11844 | ||
a96d9b2e SDJ |
11845 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
11846 | filter list, or NULL if no filtering is required. */ | |
11847 | static VEC(int) * | |
11848 | catch_syscall_split_args (char *arg) | |
11849 | { | |
11850 | VEC(int) *result = NULL; | |
29d0bb3d | 11851 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
11852 | |
11853 | while (*arg != '\0') | |
11854 | { | |
11855 | int i, syscall_number; | |
11856 | char *endptr; | |
11857 | char cur_name[128]; | |
11858 | struct syscall s; | |
11859 | ||
11860 | /* Skip whitespace. */ | |
529480d0 | 11861 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11862 | |
11863 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
11864 | cur_name[i] = arg[i]; | |
11865 | cur_name[i] = '\0'; | |
11866 | arg += i; | |
11867 | ||
11868 | /* Check if the user provided a syscall name or a number. */ | |
11869 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
11870 | if (*endptr == '\0') | |
bccd0dd2 | 11871 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
11872 | else |
11873 | { | |
11874 | /* We have a name. Let's check if it's valid and convert it | |
11875 | to a number. */ | |
11876 | get_syscall_by_name (cur_name, &s); | |
11877 | ||
11878 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
11879 | /* Here we have to issue an error instead of a warning, |
11880 | because GDB cannot do anything useful if there's no | |
11881 | syscall number to be caught. */ | |
a96d9b2e SDJ |
11882 | error (_("Unknown syscall name '%s'."), cur_name); |
11883 | } | |
11884 | ||
11885 | /* Ok, it's valid. */ | |
11886 | VEC_safe_push (int, result, s.number); | |
11887 | } | |
11888 | ||
11889 | discard_cleanups (cleanup); | |
11890 | return result; | |
11891 | } | |
11892 | ||
11893 | /* Implement the "catch syscall" command. */ | |
11894 | ||
11895 | static void | |
cc59ec59 MS |
11896 | catch_syscall_command_1 (char *arg, int from_tty, |
11897 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
11898 | { |
11899 | int tempflag; | |
11900 | VEC(int) *filter; | |
11901 | struct syscall s; | |
11902 | struct gdbarch *gdbarch = get_current_arch (); | |
11903 | ||
11904 | /* Checking if the feature if supported. */ | |
11905 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
11906 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 11907 | this architecture yet.")); |
a96d9b2e SDJ |
11908 | |
11909 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
11910 | ||
e9cafbcc | 11911 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11912 | |
11913 | /* We need to do this first "dummy" translation in order | |
11914 | to get the syscall XML file loaded or, most important, | |
11915 | to display a warning to the user if there's no XML file | |
11916 | for his/her architecture. */ | |
11917 | get_syscall_by_number (0, &s); | |
11918 | ||
11919 | /* The allowed syntax is: | |
11920 | catch syscall | |
11921 | catch syscall <name | number> [<name | number> ... <name | number>] | |
11922 | ||
11923 | Let's check if there's a syscall name. */ | |
11924 | ||
11925 | if (arg != NULL) | |
11926 | filter = catch_syscall_split_args (arg); | |
11927 | else | |
11928 | filter = NULL; | |
11929 | ||
11930 | create_syscall_event_catchpoint (tempflag, filter, | |
11931 | &catch_syscall_breakpoint_ops); | |
11932 | } | |
11933 | ||
c906108c | 11934 | static void |
fba45db2 | 11935 | catch_command (char *arg, int from_tty) |
c906108c | 11936 | { |
44feb3ce | 11937 | error (_("Catch requires an event name.")); |
c906108c SS |
11938 | } |
11939 | \f | |
11940 | ||
11941 | static void | |
fba45db2 | 11942 | tcatch_command (char *arg, int from_tty) |
c906108c | 11943 | { |
44feb3ce | 11944 | error (_("Catch requires an event name.")); |
c906108c SS |
11945 | } |
11946 | ||
8a2c437b TT |
11947 | /* A qsort comparison function that sorts breakpoints in order. */ |
11948 | ||
11949 | static int | |
11950 | compare_breakpoints (const void *a, const void *b) | |
11951 | { | |
11952 | const breakpoint_p *ba = a; | |
11953 | uintptr_t ua = (uintptr_t) *ba; | |
11954 | const breakpoint_p *bb = b; | |
11955 | uintptr_t ub = (uintptr_t) *bb; | |
11956 | ||
11957 | if ((*ba)->number < (*bb)->number) | |
11958 | return -1; | |
11959 | else if ((*ba)->number > (*bb)->number) | |
11960 | return 1; | |
11961 | ||
11962 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11963 | the number 0. */ | |
11964 | if (ua < ub) | |
11965 | return -1; | |
94b0e70d | 11966 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11967 | } |
11968 | ||
80f8a6eb | 11969 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11970 | |
11971 | static void | |
fba45db2 | 11972 | clear_command (char *arg, int from_tty) |
c906108c | 11973 | { |
8a2c437b | 11974 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11975 | VEC(breakpoint_p) *found = 0; |
11976 | int ix; | |
c906108c SS |
11977 | int default_match; |
11978 | struct symtabs_and_lines sals; | |
11979 | struct symtab_and_line sal; | |
c906108c | 11980 | int i; |
8a2c437b | 11981 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11982 | |
11983 | if (arg) | |
11984 | { | |
39cf75f7 DE |
11985 | sals = decode_line_with_current_source (arg, |
11986 | (DECODE_LINE_FUNFIRSTLINE | |
11987 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 11988 | make_cleanup (xfree, sals.sals); |
c906108c SS |
11989 | default_match = 0; |
11990 | } | |
11991 | else | |
11992 | { | |
c5aa993b | 11993 | sals.sals = (struct symtab_and_line *) |
c906108c | 11994 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11995 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11996 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11997 | |
11998 | /* Set sal's line, symtab, pc, and pspace to the values | |
11999 | corresponding to the last call to print_frame_info. If the | |
12000 | codepoint is not valid, this will set all the fields to 0. */ | |
12001 | get_last_displayed_sal (&sal); | |
c906108c | 12002 | if (sal.symtab == 0) |
8a3fe4f8 | 12003 | error (_("No source file specified.")); |
c906108c SS |
12004 | |
12005 | sals.sals[0] = sal; | |
12006 | sals.nelts = 1; | |
12007 | ||
12008 | default_match = 1; | |
12009 | } | |
12010 | ||
4a64f543 MS |
12011 | /* We don't call resolve_sal_pc here. That's not as bad as it |
12012 | seems, because all existing breakpoints typically have both | |
12013 | file/line and pc set. So, if clear is given file/line, we can | |
12014 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
12015 | |
12016 | We only support clearing given the address explicitly | |
12017 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 12018 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 12019 | due to optimization, all in one block. |
4a64f543 MS |
12020 | |
12021 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
12022 | PC corresponding to the same file:line, the breakpoint won't |
12023 | be cleared. We probably can still clear the breakpoint, but | |
12024 | since the other PC value is never presented to user, user | |
12025 | can only find it by guessing, and it does not seem important | |
12026 | to support that. */ | |
12027 | ||
4a64f543 MS |
12028 | /* For each line spec given, delete bps which correspond to it. Do |
12029 | it in two passes, solely to preserve the current behavior that | |
12030 | from_tty is forced true if we delete more than one | |
12031 | breakpoint. */ | |
c906108c | 12032 | |
80f8a6eb | 12033 | found = NULL; |
8a2c437b | 12034 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
12035 | for (i = 0; i < sals.nelts; i++) |
12036 | { | |
05cba821 JK |
12037 | const char *sal_fullname; |
12038 | ||
c906108c | 12039 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
12040 | If line given (pc == 0), clear all bpts on specified line. |
12041 | If defaulting, clear all bpts on default line | |
c906108c | 12042 | or at default pc. |
c5aa993b JM |
12043 | |
12044 | defaulting sal.pc != 0 tests to do | |
12045 | ||
12046 | 0 1 pc | |
12047 | 1 1 pc _and_ line | |
12048 | 0 0 line | |
12049 | 1 0 <can't happen> */ | |
c906108c SS |
12050 | |
12051 | sal = sals.sals[i]; | |
05cba821 JK |
12052 | sal_fullname = (sal.symtab == NULL |
12053 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 12054 | |
4a64f543 | 12055 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 12056 | ALL_BREAKPOINTS (b) |
c5aa993b | 12057 | { |
0d381245 | 12058 | int match = 0; |
4a64f543 | 12059 | /* Are we going to delete b? */ |
cc60f2e3 | 12060 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
12061 | { |
12062 | struct bp_location *loc = b->loc; | |
12063 | for (; loc; loc = loc->next) | |
12064 | { | |
f8eba3c6 TT |
12065 | /* If the user specified file:line, don't allow a PC |
12066 | match. This matches historical gdb behavior. */ | |
12067 | int pc_match = (!sal.explicit_line | |
12068 | && sal.pc | |
12069 | && (loc->pspace == sal.pspace) | |
12070 | && (loc->address == sal.pc) | |
12071 | && (!section_is_overlay (loc->section) | |
12072 | || loc->section == sal.section)); | |
4aac40c8 TT |
12073 | int line_match = 0; |
12074 | ||
12075 | if ((default_match || sal.explicit_line) | |
2f202fde | 12076 | && loc->symtab != NULL |
05cba821 | 12077 | && sal_fullname != NULL |
4aac40c8 | 12078 | && sal.pspace == loc->pspace |
05cba821 JK |
12079 | && loc->line_number == sal.line |
12080 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
12081 | sal_fullname) == 0) | |
12082 | line_match = 1; | |
4aac40c8 | 12083 | |
0d381245 VP |
12084 | if (pc_match || line_match) |
12085 | { | |
12086 | match = 1; | |
12087 | break; | |
12088 | } | |
12089 | } | |
12090 | } | |
12091 | ||
12092 | if (match) | |
d6e956e5 | 12093 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 12094 | } |
80f8a6eb | 12095 | } |
8a2c437b | 12096 | |
80f8a6eb | 12097 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 12098 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
12099 | { |
12100 | if (arg) | |
8a3fe4f8 | 12101 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 12102 | else |
8a3fe4f8 | 12103 | error (_("No breakpoint at this line.")); |
80f8a6eb | 12104 | } |
c906108c | 12105 | |
8a2c437b TT |
12106 | /* Remove duplicates from the vec. */ |
12107 | qsort (VEC_address (breakpoint_p, found), | |
12108 | VEC_length (breakpoint_p, found), | |
12109 | sizeof (breakpoint_p), | |
12110 | compare_breakpoints); | |
12111 | prev = VEC_index (breakpoint_p, found, 0); | |
12112 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
12113 | { | |
12114 | if (b == prev) | |
12115 | { | |
12116 | VEC_ordered_remove (breakpoint_p, found, ix); | |
12117 | --ix; | |
12118 | } | |
12119 | } | |
12120 | ||
d6e956e5 | 12121 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 12122 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 12123 | if (from_tty) |
a3f17187 | 12124 | { |
d6e956e5 | 12125 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
12126 | printf_unfiltered (_("Deleted breakpoint ")); |
12127 | else | |
12128 | printf_unfiltered (_("Deleted breakpoints ")); | |
12129 | } | |
d6e956e5 VP |
12130 | |
12131 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 12132 | { |
c5aa993b | 12133 | if (from_tty) |
d6e956e5 VP |
12134 | printf_unfiltered ("%d ", b->number); |
12135 | delete_breakpoint (b); | |
c906108c | 12136 | } |
80f8a6eb MS |
12137 | if (from_tty) |
12138 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
12139 | |
12140 | do_cleanups (cleanups); | |
c906108c SS |
12141 | } |
12142 | \f | |
12143 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
12144 | all breakpoints that are marked for deletion, whether hit or not. | |
12145 | This is called after any breakpoint is hit, or after errors. */ | |
12146 | ||
12147 | void | |
fba45db2 | 12148 | breakpoint_auto_delete (bpstat bs) |
c906108c | 12149 | { |
35df4500 | 12150 | struct breakpoint *b, *b_tmp; |
c906108c SS |
12151 | |
12152 | for (; bs; bs = bs->next) | |
f431efe5 PA |
12153 | if (bs->breakpoint_at |
12154 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 12155 | && bs->stop) |
f431efe5 | 12156 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 12157 | |
35df4500 | 12158 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 12159 | { |
b5de0fa7 | 12160 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
12161 | delete_breakpoint (b); |
12162 | } | |
c906108c SS |
12163 | } |
12164 | ||
4a64f543 MS |
12165 | /* A comparison function for bp_location AP and BP being interfaced to |
12166 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
12167 | does breakpoint_address_is_meaningful say for its OWNER), | |
12168 | secondarily by ordering first bp_permanent OWNERed elements and | |
12169 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 12170 | qsort being an unstable algorithm. */ |
876fa593 JK |
12171 | |
12172 | static int | |
494cfb0f | 12173 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 12174 | { |
494cfb0f JK |
12175 | struct bp_location *a = *(void **) ap; |
12176 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 12177 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
12178 | int a_perm = a->owner->enable_state == bp_permanent; |
12179 | int b_perm = b->owner->enable_state == bp_permanent; | |
12180 | ||
12181 | if (a->address != b->address) | |
12182 | return (a->address > b->address) - (a->address < b->address); | |
12183 | ||
dea2aa5f LM |
12184 | /* Sort locations at the same address by their pspace number, keeping |
12185 | locations of the same inferior (in a multi-inferior environment) | |
12186 | grouped. */ | |
12187 | ||
12188 | if (a->pspace->num != b->pspace->num) | |
12189 | return ((a->pspace->num > b->pspace->num) | |
12190 | - (a->pspace->num < b->pspace->num)); | |
12191 | ||
876fa593 JK |
12192 | /* Sort permanent breakpoints first. */ |
12193 | if (a_perm != b_perm) | |
12194 | return (a_perm < b_perm) - (a_perm > b_perm); | |
12195 | ||
c56a97f9 JK |
12196 | /* Make the internal GDB representation stable across GDB runs |
12197 | where A and B memory inside GDB can differ. Breakpoint locations of | |
12198 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
12199 | |
12200 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
12201 | return ((a->owner->number > b->owner->number) |
12202 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
12203 | |
12204 | return (a > b) - (a < b); | |
12205 | } | |
12206 | ||
876fa593 | 12207 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
12208 | bp_location_shadow_len_after_address_max according to the current |
12209 | content of the bp_location array. */ | |
f7545552 TT |
12210 | |
12211 | static void | |
876fa593 | 12212 | bp_location_target_extensions_update (void) |
f7545552 | 12213 | { |
876fa593 JK |
12214 | struct bp_location *bl, **blp_tmp; |
12215 | ||
12216 | bp_location_placed_address_before_address_max = 0; | |
12217 | bp_location_shadow_len_after_address_max = 0; | |
12218 | ||
12219 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12220 | { | |
12221 | CORE_ADDR start, end, addr; | |
12222 | ||
12223 | if (!bp_location_has_shadow (bl)) | |
12224 | continue; | |
12225 | ||
12226 | start = bl->target_info.placed_address; | |
12227 | end = start + bl->target_info.shadow_len; | |
12228 | ||
12229 | gdb_assert (bl->address >= start); | |
12230 | addr = bl->address - start; | |
12231 | if (addr > bp_location_placed_address_before_address_max) | |
12232 | bp_location_placed_address_before_address_max = addr; | |
12233 | ||
12234 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12235 | ||
12236 | gdb_assert (bl->address < end); | |
12237 | addr = end - bl->address; | |
12238 | if (addr > bp_location_shadow_len_after_address_max) | |
12239 | bp_location_shadow_len_after_address_max = addr; | |
12240 | } | |
f7545552 TT |
12241 | } |
12242 | ||
1e4d1764 YQ |
12243 | /* Download tracepoint locations if they haven't been. */ |
12244 | ||
12245 | static void | |
12246 | download_tracepoint_locations (void) | |
12247 | { | |
7ed2c994 | 12248 | struct breakpoint *b; |
1e4d1764 YQ |
12249 | struct cleanup *old_chain; |
12250 | ||
12251 | if (!target_can_download_tracepoint ()) | |
12252 | return; | |
12253 | ||
12254 | old_chain = save_current_space_and_thread (); | |
12255 | ||
7ed2c994 | 12256 | ALL_TRACEPOINTS (b) |
1e4d1764 | 12257 | { |
7ed2c994 | 12258 | struct bp_location *bl; |
1e4d1764 | 12259 | struct tracepoint *t; |
f2a8bc8a | 12260 | int bp_location_downloaded = 0; |
1e4d1764 | 12261 | |
7ed2c994 | 12262 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
12263 | ? !may_insert_fast_tracepoints |
12264 | : !may_insert_tracepoints)) | |
12265 | continue; | |
12266 | ||
7ed2c994 YQ |
12267 | for (bl = b->loc; bl; bl = bl->next) |
12268 | { | |
12269 | /* In tracepoint, locations are _never_ duplicated, so | |
12270 | should_be_inserted is equivalent to | |
12271 | unduplicated_should_be_inserted. */ | |
12272 | if (!should_be_inserted (bl) || bl->inserted) | |
12273 | continue; | |
1e4d1764 | 12274 | |
7ed2c994 | 12275 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 12276 | |
7ed2c994 | 12277 | target_download_tracepoint (bl); |
1e4d1764 | 12278 | |
7ed2c994 | 12279 | bl->inserted = 1; |
f2a8bc8a | 12280 | bp_location_downloaded = 1; |
7ed2c994 YQ |
12281 | } |
12282 | t = (struct tracepoint *) b; | |
12283 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
12284 | if (bp_location_downloaded) |
12285 | observer_notify_breakpoint_modified (b); | |
1e4d1764 YQ |
12286 | } |
12287 | ||
12288 | do_cleanups (old_chain); | |
12289 | } | |
12290 | ||
934709f0 PW |
12291 | /* Swap the insertion/duplication state between two locations. */ |
12292 | ||
12293 | static void | |
12294 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12295 | { | |
12296 | const int left_inserted = left->inserted; | |
12297 | const int left_duplicate = left->duplicate; | |
b775012e | 12298 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12299 | const struct bp_target_info left_target_info = left->target_info; |
12300 | ||
1e4d1764 YQ |
12301 | /* Locations of tracepoints can never be duplicated. */ |
12302 | if (is_tracepoint (left->owner)) | |
12303 | gdb_assert (!left->duplicate); | |
12304 | if (is_tracepoint (right->owner)) | |
12305 | gdb_assert (!right->duplicate); | |
12306 | ||
934709f0 PW |
12307 | left->inserted = right->inserted; |
12308 | left->duplicate = right->duplicate; | |
b775012e | 12309 | left->needs_update = right->needs_update; |
934709f0 PW |
12310 | left->target_info = right->target_info; |
12311 | right->inserted = left_inserted; | |
12312 | right->duplicate = left_duplicate; | |
b775012e | 12313 | right->needs_update = left_needs_update; |
934709f0 PW |
12314 | right->target_info = left_target_info; |
12315 | } | |
12316 | ||
b775012e LM |
12317 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12318 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12319 | conditions on the target's side. Such conditions need to be updated on | |
12320 | the target. */ | |
12321 | ||
12322 | static void | |
12323 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12324 | { | |
12325 | struct bp_location **locp = NULL, **loc2p; | |
12326 | struct bp_location *loc; | |
12327 | CORE_ADDR address = 0; | |
12328 | int pspace_num; | |
12329 | ||
12330 | address = bl->address; | |
12331 | pspace_num = bl->pspace->num; | |
12332 | ||
12333 | /* This is only meaningful if the target is | |
12334 | evaluating conditions and if the user has | |
12335 | opted for condition evaluation on the target's | |
12336 | side. */ | |
12337 | if (gdb_evaluates_breakpoint_condition_p () | |
12338 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12339 | return; | |
12340 | ||
12341 | /* Flag all breakpoint locations with this address and | |
12342 | the same program space as the location | |
12343 | as "its condition has changed". We need to | |
12344 | update the conditions on the target's side. */ | |
12345 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12346 | { | |
12347 | loc = *loc2p; | |
12348 | ||
12349 | if (!is_breakpoint (loc->owner) | |
12350 | || pspace_num != loc->pspace->num) | |
12351 | continue; | |
12352 | ||
12353 | /* Flag the location appropriately. We use a different state to | |
12354 | let everyone know that we already updated the set of locations | |
12355 | with addr bl->address and program space bl->pspace. This is so | |
12356 | we don't have to keep calling these functions just to mark locations | |
12357 | that have already been marked. */ | |
12358 | loc->condition_changed = condition_updated; | |
12359 | ||
12360 | /* Free the agent expression bytecode as well. We will compute | |
12361 | it later on. */ | |
12362 | if (loc->cond_bytecode) | |
12363 | { | |
12364 | free_agent_expr (loc->cond_bytecode); | |
12365 | loc->cond_bytecode = NULL; | |
12366 | } | |
12367 | } | |
12368 | } | |
12369 | ||
4cd9bd08 | 12370 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
12371 | into the inferior, only remove already-inserted locations that no |
12372 | longer should be inserted. Functions that delete a breakpoint or | |
12373 | breakpoints should pass false, so that deleting a breakpoint | |
12374 | doesn't have the side effect of inserting the locations of other | |
12375 | breakpoints that are marked not-inserted, but should_be_inserted | |
12376 | returns true on them. | |
12377 | ||
12378 | This behaviour is useful is situations close to tear-down -- e.g., | |
12379 | after an exec, while the target still has execution, but breakpoint | |
12380 | shadows of the previous executable image should *NOT* be restored | |
12381 | to the new image; or before detaching, where the target still has | |
12382 | execution and wants to delete breakpoints from GDB's lists, and all | |
12383 | breakpoints had already been removed from the inferior. */ | |
12384 | ||
0d381245 | 12385 | static void |
b60e7edf | 12386 | update_global_location_list (int should_insert) |
0d381245 | 12387 | { |
74960c60 | 12388 | struct breakpoint *b; |
876fa593 | 12389 | struct bp_location **locp, *loc; |
f7545552 | 12390 | struct cleanup *cleanups; |
b775012e LM |
12391 | /* Last breakpoint location address that was marked for update. */ |
12392 | CORE_ADDR last_addr = 0; | |
12393 | /* Last breakpoint location program space that was marked for update. */ | |
12394 | int last_pspace_num = -1; | |
f7545552 | 12395 | |
2d134ed3 PA |
12396 | /* Used in the duplicates detection below. When iterating over all |
12397 | bp_locations, points to the first bp_location of a given address. | |
12398 | Breakpoints and watchpoints of different types are never | |
12399 | duplicates of each other. Keep one pointer for each type of | |
12400 | breakpoint/watchpoint, so we only need to loop over all locations | |
12401 | once. */ | |
12402 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12403 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12404 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12405 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12406 | |
4a64f543 MS |
12407 | /* Saved former bp_location array which we compare against the newly |
12408 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12409 | struct bp_location **old_location, **old_locp; |
12410 | unsigned old_location_count; | |
12411 | ||
12412 | old_location = bp_location; | |
12413 | old_location_count = bp_location_count; | |
12414 | bp_location = NULL; | |
12415 | bp_location_count = 0; | |
12416 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12417 | |
74960c60 | 12418 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12419 | for (loc = b->loc; loc; loc = loc->next) |
12420 | bp_location_count++; | |
12421 | ||
12422 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12423 | locp = bp_location; | |
12424 | ALL_BREAKPOINTS (b) | |
12425 | for (loc = b->loc; loc; loc = loc->next) | |
12426 | *locp++ = loc; | |
12427 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12428 | bp_location_compare); |
876fa593 JK |
12429 | |
12430 | bp_location_target_extensions_update (); | |
74960c60 | 12431 | |
4a64f543 MS |
12432 | /* Identify bp_location instances that are no longer present in the |
12433 | new list, and therefore should be freed. Note that it's not | |
12434 | necessary that those locations should be removed from inferior -- | |
12435 | if there's another location at the same address (previously | |
12436 | marked as duplicate), we don't need to remove/insert the | |
12437 | location. | |
876fa593 | 12438 | |
4a64f543 MS |
12439 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12440 | and former bp_location array state respectively. */ | |
876fa593 JK |
12441 | |
12442 | locp = bp_location; | |
12443 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12444 | old_locp++) | |
74960c60 | 12445 | { |
876fa593 | 12446 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12447 | struct bp_location **loc2p; |
876fa593 | 12448 | |
e5dd4106 | 12449 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12450 | not, we have to free it. */ |
c7d46a38 | 12451 | int found_object = 0; |
20874c92 VP |
12452 | /* Tells if the location should remain inserted in the target. */ |
12453 | int keep_in_target = 0; | |
12454 | int removed = 0; | |
876fa593 | 12455 | |
4a64f543 MS |
12456 | /* Skip LOCP entries which will definitely never be needed. |
12457 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12458 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12459 | && (*locp)->address < old_loc->address) |
876fa593 | 12460 | locp++; |
c7d46a38 PA |
12461 | |
12462 | for (loc2p = locp; | |
12463 | (loc2p < bp_location + bp_location_count | |
12464 | && (*loc2p)->address == old_loc->address); | |
12465 | loc2p++) | |
12466 | { | |
b775012e LM |
12467 | /* Check if this is a new/duplicated location or a duplicated |
12468 | location that had its condition modified. If so, we want to send | |
12469 | its condition to the target if evaluation of conditions is taking | |
12470 | place there. */ | |
12471 | if ((*loc2p)->condition_changed == condition_modified | |
12472 | && (last_addr != old_loc->address | |
12473 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12474 | { |
b775012e LM |
12475 | force_breakpoint_reinsertion (*loc2p); |
12476 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12477 | } |
b775012e LM |
12478 | |
12479 | if (*loc2p == old_loc) | |
12480 | found_object = 1; | |
c7d46a38 | 12481 | } |
74960c60 | 12482 | |
b775012e LM |
12483 | /* We have already handled this address, update it so that we don't |
12484 | have to go through updates again. */ | |
12485 | last_addr = old_loc->address; | |
12486 | ||
12487 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12488 | if (!found_object) | |
12489 | force_breakpoint_reinsertion (old_loc); | |
12490 | ||
4a64f543 MS |
12491 | /* If this location is no longer present, and inserted, look if |
12492 | there's maybe a new location at the same address. If so, | |
12493 | mark that one inserted, and don't remove this one. This is | |
12494 | needed so that we don't have a time window where a breakpoint | |
12495 | at certain location is not inserted. */ | |
74960c60 | 12496 | |
876fa593 | 12497 | if (old_loc->inserted) |
0d381245 | 12498 | { |
4a64f543 MS |
12499 | /* If the location is inserted now, we might have to remove |
12500 | it. */ | |
74960c60 | 12501 | |
876fa593 | 12502 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12503 | { |
4a64f543 MS |
12504 | /* The location is still present in the location list, |
12505 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12506 | keep_in_target = 1; |
74960c60 VP |
12507 | } |
12508 | else | |
12509 | { | |
b775012e LM |
12510 | /* This location still exists, but it won't be kept in the |
12511 | target since it may have been disabled. We proceed to | |
12512 | remove its target-side condition. */ | |
12513 | ||
4a64f543 MS |
12514 | /* The location is either no longer present, or got |
12515 | disabled. See if there's another location at the | |
12516 | same address, in which case we don't need to remove | |
12517 | this one from the target. */ | |
876fa593 | 12518 | |
2bdf28a0 | 12519 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12520 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12521 | { | |
876fa593 | 12522 | for (loc2p = locp; |
c7d46a38 PA |
12523 | (loc2p < bp_location + bp_location_count |
12524 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12525 | loc2p++) |
12526 | { | |
12527 | struct bp_location *loc2 = *loc2p; | |
12528 | ||
2d134ed3 | 12529 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12530 | { |
85d721b8 PA |
12531 | /* Read watchpoint locations are switched to |
12532 | access watchpoints, if the former are not | |
12533 | supported, but the latter are. */ | |
12534 | if (is_hardware_watchpoint (old_loc->owner)) | |
12535 | { | |
12536 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12537 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12538 | } | |
12539 | ||
934709f0 PW |
12540 | /* loc2 is a duplicated location. We need to check |
12541 | if it should be inserted in case it will be | |
12542 | unduplicated. */ | |
12543 | if (loc2 != old_loc | |
12544 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12545 | { |
934709f0 | 12546 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12547 | keep_in_target = 1; |
12548 | break; | |
12549 | } | |
876fa593 JK |
12550 | } |
12551 | } | |
12552 | } | |
74960c60 VP |
12553 | } |
12554 | ||
20874c92 VP |
12555 | if (!keep_in_target) |
12556 | { | |
876fa593 | 12557 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12558 | { |
4a64f543 MS |
12559 | /* This is just about all we can do. We could keep |
12560 | this location on the global list, and try to | |
12561 | remove it next time, but there's no particular | |
12562 | reason why we will succeed next time. | |
20874c92 | 12563 | |
4a64f543 MS |
12564 | Note that at this point, old_loc->owner is still |
12565 | valid, as delete_breakpoint frees the breakpoint | |
12566 | only after calling us. */ | |
3e43a32a MS |
12567 | printf_filtered (_("warning: Error removing " |
12568 | "breakpoint %d\n"), | |
876fa593 | 12569 | old_loc->owner->number); |
20874c92 VP |
12570 | } |
12571 | removed = 1; | |
12572 | } | |
0d381245 | 12573 | } |
74960c60 VP |
12574 | |
12575 | if (!found_object) | |
1c5cfe86 | 12576 | { |
db82e815 PA |
12577 | if (removed && non_stop |
12578 | && breakpoint_address_is_meaningful (old_loc->owner) | |
12579 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 12580 | { |
db82e815 PA |
12581 | /* This location was removed from the target. In |
12582 | non-stop mode, a race condition is possible where | |
12583 | we've removed a breakpoint, but stop events for that | |
12584 | breakpoint are already queued and will arrive later. | |
12585 | We apply an heuristic to be able to distinguish such | |
12586 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12587 | breakpoint location for a bit, and will retire it | |
12588 | after we see some number of events. The theory here | |
12589 | is that reporting of events should, "on the average", | |
12590 | be fair, so after a while we'll see events from all | |
12591 | threads that have anything of interest, and no longer | |
12592 | need to keep this breakpoint location around. We | |
12593 | don't hold locations forever so to reduce chances of | |
12594 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12595 | SIGTRAP. | |
12596 | ||
12597 | The heuristic failing can be disastrous on | |
12598 | decr_pc_after_break targets. | |
12599 | ||
12600 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12601 | if we fail to recognize a late breakpoint SIGTRAP, | |
12602 | because events_till_retirement has reached 0 too | |
12603 | soon, we'll fail to do the PC adjustment, and report | |
12604 | a random SIGTRAP to the user. When the user resumes | |
12605 | the inferior, it will most likely immediately crash | |
2dec564e | 12606 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12607 | corrupted, because of being resumed e.g., in the |
12608 | middle of a multi-byte instruction, or skipped a | |
12609 | one-byte instruction. This was actually seen happen | |
12610 | on native x86-linux, and should be less rare on | |
12611 | targets that do not support new thread events, like | |
12612 | remote, due to the heuristic depending on | |
12613 | thread_count. | |
12614 | ||
12615 | Mistaking a random SIGTRAP for a breakpoint trap | |
12616 | causes similar symptoms (PC adjustment applied when | |
12617 | it shouldn't), but then again, playing with SIGTRAPs | |
12618 | behind the debugger's back is asking for trouble. | |
12619 | ||
12620 | Since hardware watchpoint traps are always | |
12621 | distinguishable from other traps, so we don't need to | |
12622 | apply keep hardware watchpoint moribund locations | |
12623 | around. We simply always ignore hardware watchpoint | |
12624 | traps we can no longer explain. */ | |
12625 | ||
876fa593 JK |
12626 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12627 | old_loc->owner = NULL; | |
20874c92 | 12628 | |
876fa593 | 12629 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12630 | } |
12631 | else | |
f431efe5 PA |
12632 | { |
12633 | old_loc->owner = NULL; | |
12634 | decref_bp_location (&old_loc); | |
12635 | } | |
20874c92 | 12636 | } |
74960c60 | 12637 | } |
1c5cfe86 | 12638 | |
348d480f PA |
12639 | /* Rescan breakpoints at the same address and section, marking the |
12640 | first one as "first" and any others as "duplicates". This is so | |
12641 | that the bpt instruction is only inserted once. If we have a | |
12642 | permanent breakpoint at the same place as BPT, make that one the | |
12643 | official one, and the rest as duplicates. Permanent breakpoints | |
12644 | are sorted first for the same address. | |
12645 | ||
12646 | Do the same for hardware watchpoints, but also considering the | |
12647 | watchpoint's type (regular/access/read) and length. */ | |
12648 | ||
12649 | bp_loc_first = NULL; | |
12650 | wp_loc_first = NULL; | |
12651 | awp_loc_first = NULL; | |
12652 | rwp_loc_first = NULL; | |
12653 | ALL_BP_LOCATIONS (loc, locp) | |
12654 | { | |
12655 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12656 | non-NULL. */ | |
348d480f | 12657 | struct bp_location **loc_first_p; |
d3fbdd86 | 12658 | b = loc->owner; |
348d480f | 12659 | |
6f380991 | 12660 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12661 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12662 | /* Don't detect duplicate for tracepoint locations because they are |
12663 | never duplicated. See the comments in field `duplicate' of | |
12664 | `struct bp_location'. */ | |
348d480f | 12665 | || is_tracepoint (b)) |
b775012e LM |
12666 | { |
12667 | /* Clear the condition modification flag. */ | |
12668 | loc->condition_changed = condition_unchanged; | |
12669 | continue; | |
12670 | } | |
348d480f PA |
12671 | |
12672 | /* Permanent breakpoint should always be inserted. */ | |
12673 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12674 | internal_error (__FILE__, __LINE__, | |
12675 | _("allegedly permanent breakpoint is not " | |
12676 | "actually inserted")); | |
12677 | ||
12678 | if (b->type == bp_hardware_watchpoint) | |
12679 | loc_first_p = &wp_loc_first; | |
12680 | else if (b->type == bp_read_watchpoint) | |
12681 | loc_first_p = &rwp_loc_first; | |
12682 | else if (b->type == bp_access_watchpoint) | |
12683 | loc_first_p = &awp_loc_first; | |
12684 | else | |
12685 | loc_first_p = &bp_loc_first; | |
12686 | ||
12687 | if (*loc_first_p == NULL | |
12688 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12689 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12690 | { | |
12691 | *loc_first_p = loc; | |
12692 | loc->duplicate = 0; | |
b775012e LM |
12693 | |
12694 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12695 | { | |
12696 | loc->needs_update = 1; | |
12697 | /* Clear the condition modification flag. */ | |
12698 | loc->condition_changed = condition_unchanged; | |
12699 | } | |
348d480f PA |
12700 | continue; |
12701 | } | |
12702 | ||
934709f0 PW |
12703 | |
12704 | /* This and the above ensure the invariant that the first location | |
12705 | is not duplicated, and is the inserted one. | |
12706 | All following are marked as duplicated, and are not inserted. */ | |
12707 | if (loc->inserted) | |
12708 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12709 | loc->duplicate = 1; |
12710 | ||
b775012e LM |
12711 | /* Clear the condition modification flag. */ |
12712 | loc->condition_changed = condition_unchanged; | |
12713 | ||
348d480f PA |
12714 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12715 | && b->enable_state != bp_permanent) | |
12716 | internal_error (__FILE__, __LINE__, | |
12717 | _("another breakpoint was inserted on top of " | |
12718 | "a permanent breakpoint")); | |
12719 | } | |
12720 | ||
b775012e | 12721 | if (breakpoints_always_inserted_mode () |
348d480f | 12722 | && (have_live_inferiors () |
f5656ead | 12723 | || (gdbarch_has_global_breakpoints (target_gdbarch ())))) |
b775012e LM |
12724 | { |
12725 | if (should_insert) | |
12726 | insert_breakpoint_locations (); | |
12727 | else | |
12728 | { | |
12729 | /* Though should_insert is false, we may need to update conditions | |
12730 | on the target's side if it is evaluating such conditions. We | |
12731 | only update conditions for locations that are marked | |
12732 | "needs_update". */ | |
12733 | update_inserted_breakpoint_locations (); | |
12734 | } | |
12735 | } | |
348d480f | 12736 | |
1e4d1764 YQ |
12737 | if (should_insert) |
12738 | download_tracepoint_locations (); | |
12739 | ||
348d480f PA |
12740 | do_cleanups (cleanups); |
12741 | } | |
12742 | ||
12743 | void | |
12744 | breakpoint_retire_moribund (void) | |
12745 | { | |
12746 | struct bp_location *loc; | |
12747 | int ix; | |
12748 | ||
12749 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12750 | if (--(loc->events_till_retirement) == 0) | |
12751 | { | |
12752 | decref_bp_location (&loc); | |
12753 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12754 | --ix; | |
12755 | } | |
12756 | } | |
12757 | ||
12758 | static void | |
12759 | update_global_location_list_nothrow (int inserting) | |
12760 | { | |
bfd189b1 | 12761 | volatile struct gdb_exception e; |
348d480f PA |
12762 | |
12763 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12764 | update_global_location_list (inserting); | |
12765 | } | |
12766 | ||
12767 | /* Clear BKP from a BPS. */ | |
12768 | ||
12769 | static void | |
12770 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12771 | { | |
12772 | bpstat bs; | |
12773 | ||
12774 | for (bs = bps; bs; bs = bs->next) | |
12775 | if (bs->breakpoint_at == bpt) | |
12776 | { | |
12777 | bs->breakpoint_at = NULL; | |
12778 | bs->old_val = NULL; | |
12779 | /* bs->commands will be freed later. */ | |
12780 | } | |
12781 | } | |
12782 | ||
12783 | /* Callback for iterate_over_threads. */ | |
12784 | static int | |
12785 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12786 | { | |
12787 | struct breakpoint *bpt = data; | |
12788 | ||
12789 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12790 | return 0; | |
12791 | } | |
12792 | ||
12793 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12794 | callbacks. */ | |
12795 | ||
12796 | static void | |
12797 | say_where (struct breakpoint *b) | |
12798 | { | |
12799 | struct value_print_options opts; | |
12800 | ||
12801 | get_user_print_options (&opts); | |
12802 | ||
12803 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12804 | single string. */ | |
12805 | if (b->loc == NULL) | |
12806 | { | |
12807 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12808 | } | |
12809 | else | |
12810 | { | |
2f202fde | 12811 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12812 | { |
12813 | printf_filtered (" at "); | |
12814 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12815 | gdb_stdout); | |
12816 | } | |
2f202fde | 12817 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12818 | { |
12819 | /* If there is a single location, we can print the location | |
12820 | more nicely. */ | |
12821 | if (b->loc->next == NULL) | |
12822 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12823 | symtab_to_filename_for_display (b->loc->symtab), |
12824 | b->loc->line_number); | |
f8eba3c6 TT |
12825 | else |
12826 | /* This is not ideal, but each location may have a | |
12827 | different file name, and this at least reflects the | |
12828 | real situation somewhat. */ | |
12829 | printf_filtered (": %s.", b->addr_string); | |
12830 | } | |
348d480f PA |
12831 | |
12832 | if (b->loc->next) | |
12833 | { | |
12834 | struct bp_location *loc = b->loc; | |
12835 | int n = 0; | |
12836 | for (; loc; loc = loc->next) | |
12837 | ++n; | |
12838 | printf_filtered (" (%d locations)", n); | |
12839 | } | |
12840 | } | |
12841 | } | |
12842 | ||
348d480f PA |
12843 | /* Default bp_location_ops methods. */ |
12844 | ||
12845 | static void | |
12846 | bp_location_dtor (struct bp_location *self) | |
12847 | { | |
12848 | xfree (self->cond); | |
b775012e LM |
12849 | if (self->cond_bytecode) |
12850 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12851 | xfree (self->function_name); |
8b4f3082 PA |
12852 | |
12853 | VEC_free (agent_expr_p, self->target_info.conditions); | |
12854 | VEC_free (agent_expr_p, self->target_info.tcommands); | |
348d480f PA |
12855 | } |
12856 | ||
12857 | static const struct bp_location_ops bp_location_ops = | |
12858 | { | |
12859 | bp_location_dtor | |
12860 | }; | |
12861 | ||
2060206e PA |
12862 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12863 | inherit from. */ | |
348d480f | 12864 | |
2060206e PA |
12865 | static void |
12866 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12867 | { |
12868 | decref_counted_command_line (&self->commands); | |
12869 | xfree (self->cond_string); | |
fb81d016 | 12870 | xfree (self->extra_string); |
348d480f | 12871 | xfree (self->addr_string); |
f8eba3c6 | 12872 | xfree (self->filter); |
348d480f | 12873 | xfree (self->addr_string_range_end); |
348d480f PA |
12874 | } |
12875 | ||
2060206e PA |
12876 | static struct bp_location * |
12877 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12878 | { |
12879 | struct bp_location *loc; | |
12880 | ||
12881 | loc = XNEW (struct bp_location); | |
12882 | init_bp_location (loc, &bp_location_ops, self); | |
12883 | return loc; | |
12884 | } | |
12885 | ||
2060206e PA |
12886 | static void |
12887 | base_breakpoint_re_set (struct breakpoint *b) | |
12888 | { | |
12889 | /* Nothing to re-set. */ | |
12890 | } | |
12891 | ||
12892 | #define internal_error_pure_virtual_called() \ | |
12893 | gdb_assert_not_reached ("pure virtual function called") | |
12894 | ||
12895 | static int | |
12896 | base_breakpoint_insert_location (struct bp_location *bl) | |
12897 | { | |
12898 | internal_error_pure_virtual_called (); | |
12899 | } | |
12900 | ||
12901 | static int | |
12902 | base_breakpoint_remove_location (struct bp_location *bl) | |
12903 | { | |
12904 | internal_error_pure_virtual_called (); | |
12905 | } | |
12906 | ||
12907 | static int | |
12908 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12909 | struct address_space *aspace, | |
09ac7c10 TT |
12910 | CORE_ADDR bp_addr, |
12911 | const struct target_waitstatus *ws) | |
2060206e PA |
12912 | { |
12913 | internal_error_pure_virtual_called (); | |
12914 | } | |
12915 | ||
12916 | static void | |
12917 | base_breakpoint_check_status (bpstat bs) | |
12918 | { | |
12919 | /* Always stop. */ | |
12920 | } | |
12921 | ||
12922 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12923 | errors. */ | |
12924 | ||
12925 | static int | |
12926 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12927 | { | |
12928 | internal_error_pure_virtual_called (); | |
12929 | } | |
12930 | ||
12931 | /* A "resources_needed" breakpoint_ops method that just internal | |
12932 | errors. */ | |
12933 | ||
12934 | static int | |
12935 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12936 | { | |
12937 | internal_error_pure_virtual_called (); | |
12938 | } | |
12939 | ||
12940 | static enum print_stop_action | |
12941 | base_breakpoint_print_it (bpstat bs) | |
12942 | { | |
12943 | internal_error_pure_virtual_called (); | |
12944 | } | |
12945 | ||
12946 | static void | |
12947 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12948 | struct ui_out *uiout) | |
12949 | { | |
12950 | /* nothing */ | |
12951 | } | |
12952 | ||
12953 | static void | |
12954 | base_breakpoint_print_mention (struct breakpoint *b) | |
12955 | { | |
12956 | internal_error_pure_virtual_called (); | |
12957 | } | |
12958 | ||
12959 | static void | |
12960 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12961 | { | |
12962 | internal_error_pure_virtual_called (); | |
12963 | } | |
12964 | ||
983af33b SDJ |
12965 | static void |
12966 | base_breakpoint_create_sals_from_address (char **arg, | |
12967 | struct linespec_result *canonical, | |
12968 | enum bptype type_wanted, | |
12969 | char *addr_start, | |
12970 | char **copy_arg) | |
12971 | { | |
12972 | internal_error_pure_virtual_called (); | |
12973 | } | |
12974 | ||
12975 | static void | |
12976 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12977 | struct linespec_result *c, | |
983af33b | 12978 | char *cond_string, |
e7e0cddf | 12979 | char *extra_string, |
983af33b SDJ |
12980 | enum bptype type_wanted, |
12981 | enum bpdisp disposition, | |
12982 | int thread, | |
12983 | int task, int ignore_count, | |
12984 | const struct breakpoint_ops *o, | |
12985 | int from_tty, int enabled, | |
44f238bb | 12986 | int internal, unsigned flags) |
983af33b SDJ |
12987 | { |
12988 | internal_error_pure_virtual_called (); | |
12989 | } | |
12990 | ||
12991 | static void | |
12992 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12993 | struct symtabs_and_lines *sals) | |
12994 | { | |
12995 | internal_error_pure_virtual_called (); | |
12996 | } | |
12997 | ||
ab04a2af TT |
12998 | /* The default 'explains_signal' method. */ |
12999 | ||
47591c29 | 13000 | static int |
427cd150 | 13001 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af | 13002 | { |
47591c29 | 13003 | return 1; |
ab04a2af TT |
13004 | } |
13005 | ||
9d6e6e84 HZ |
13006 | /* The default "after_condition_true" method. */ |
13007 | ||
13008 | static void | |
13009 | base_breakpoint_after_condition_true (struct bpstats *bs) | |
13010 | { | |
13011 | /* Nothing to do. */ | |
13012 | } | |
13013 | ||
ab04a2af | 13014 | struct breakpoint_ops base_breakpoint_ops = |
2060206e PA |
13015 | { |
13016 | base_breakpoint_dtor, | |
13017 | base_breakpoint_allocate_location, | |
13018 | base_breakpoint_re_set, | |
13019 | base_breakpoint_insert_location, | |
13020 | base_breakpoint_remove_location, | |
13021 | base_breakpoint_breakpoint_hit, | |
13022 | base_breakpoint_check_status, | |
13023 | base_breakpoint_resources_needed, | |
13024 | base_breakpoint_works_in_software_mode, | |
13025 | base_breakpoint_print_it, | |
13026 | NULL, | |
13027 | base_breakpoint_print_one_detail, | |
13028 | base_breakpoint_print_mention, | |
983af33b SDJ |
13029 | base_breakpoint_print_recreate, |
13030 | base_breakpoint_create_sals_from_address, | |
13031 | base_breakpoint_create_breakpoints_sal, | |
13032 | base_breakpoint_decode_linespec, | |
9d6e6e84 HZ |
13033 | base_breakpoint_explains_signal, |
13034 | base_breakpoint_after_condition_true, | |
2060206e PA |
13035 | }; |
13036 | ||
13037 | /* Default breakpoint_ops methods. */ | |
13038 | ||
13039 | static void | |
348d480f PA |
13040 | bkpt_re_set (struct breakpoint *b) |
13041 | { | |
06edf0c0 PA |
13042 | /* FIXME: is this still reachable? */ |
13043 | if (b->addr_string == NULL) | |
13044 | { | |
13045 | /* Anything without a string can't be re-set. */ | |
348d480f | 13046 | delete_breakpoint (b); |
06edf0c0 | 13047 | return; |
348d480f | 13048 | } |
06edf0c0 PA |
13049 | |
13050 | breakpoint_re_set_default (b); | |
348d480f PA |
13051 | } |
13052 | ||
2060206e | 13053 | static int |
348d480f PA |
13054 | bkpt_insert_location (struct bp_location *bl) |
13055 | { | |
13056 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
13057 | return target_insert_hw_breakpoint (bl->gdbarch, | |
13058 | &bl->target_info); | |
13059 | else | |
13060 | return target_insert_breakpoint (bl->gdbarch, | |
13061 | &bl->target_info); | |
13062 | } | |
13063 | ||
2060206e | 13064 | static int |
348d480f PA |
13065 | bkpt_remove_location (struct bp_location *bl) |
13066 | { | |
13067 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
13068 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
13069 | else | |
13070 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
13071 | } | |
13072 | ||
2060206e | 13073 | static int |
348d480f | 13074 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
13075 | struct address_space *aspace, CORE_ADDR bp_addr, |
13076 | const struct target_waitstatus *ws) | |
348d480f | 13077 | { |
09ac7c10 | 13078 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 13079 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
13080 | return 0; |
13081 | ||
348d480f PA |
13082 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
13083 | aspace, bp_addr)) | |
13084 | return 0; | |
13085 | ||
13086 | if (overlay_debugging /* unmapped overlay section */ | |
13087 | && section_is_overlay (bl->section) | |
13088 | && !section_is_mapped (bl->section)) | |
13089 | return 0; | |
13090 | ||
13091 | return 1; | |
13092 | } | |
13093 | ||
2060206e | 13094 | static int |
348d480f PA |
13095 | bkpt_resources_needed (const struct bp_location *bl) |
13096 | { | |
13097 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
13098 | ||
13099 | return 1; | |
13100 | } | |
13101 | ||
2060206e | 13102 | static enum print_stop_action |
348d480f PA |
13103 | bkpt_print_it (bpstat bs) |
13104 | { | |
348d480f PA |
13105 | struct breakpoint *b; |
13106 | const struct bp_location *bl; | |
001c8c33 | 13107 | int bp_temp; |
79a45e25 | 13108 | struct ui_out *uiout = current_uiout; |
348d480f PA |
13109 | |
13110 | gdb_assert (bs->bp_location_at != NULL); | |
13111 | ||
13112 | bl = bs->bp_location_at; | |
13113 | b = bs->breakpoint_at; | |
13114 | ||
001c8c33 PA |
13115 | bp_temp = b->disposition == disp_del; |
13116 | if (bl->address != bl->requested_address) | |
13117 | breakpoint_adjustment_warning (bl->requested_address, | |
13118 | bl->address, | |
13119 | b->number, 1); | |
13120 | annotate_breakpoint (b->number); | |
13121 | if (bp_temp) | |
13122 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
13123 | else | |
13124 | ui_out_text (uiout, "\nBreakpoint "); | |
13125 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 13126 | { |
001c8c33 PA |
13127 | ui_out_field_string (uiout, "reason", |
13128 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
13129 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 13130 | } |
001c8c33 PA |
13131 | ui_out_field_int (uiout, "bkptno", b->number); |
13132 | ui_out_text (uiout, ", "); | |
06edf0c0 | 13133 | |
001c8c33 | 13134 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
13135 | } |
13136 | ||
2060206e | 13137 | static void |
06edf0c0 PA |
13138 | bkpt_print_mention (struct breakpoint *b) |
13139 | { | |
79a45e25 | 13140 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
13141 | return; |
13142 | ||
13143 | switch (b->type) | |
13144 | { | |
13145 | case bp_breakpoint: | |
13146 | case bp_gnu_ifunc_resolver: | |
13147 | if (b->disposition == disp_del) | |
13148 | printf_filtered (_("Temporary breakpoint")); | |
13149 | else | |
13150 | printf_filtered (_("Breakpoint")); | |
13151 | printf_filtered (_(" %d"), b->number); | |
13152 | if (b->type == bp_gnu_ifunc_resolver) | |
13153 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
13154 | break; | |
13155 | case bp_hardware_breakpoint: | |
13156 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
13157 | break; | |
e7e0cddf SS |
13158 | case bp_dprintf: |
13159 | printf_filtered (_("Dprintf %d"), b->number); | |
13160 | break; | |
06edf0c0 PA |
13161 | } |
13162 | ||
13163 | say_where (b); | |
13164 | } | |
13165 | ||
2060206e | 13166 | static void |
06edf0c0 PA |
13167 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
13168 | { | |
13169 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
13170 | fprintf_unfiltered (fp, "tbreak"); | |
13171 | else if (tp->type == bp_breakpoint) | |
13172 | fprintf_unfiltered (fp, "break"); | |
13173 | else if (tp->type == bp_hardware_breakpoint | |
13174 | && tp->disposition == disp_del) | |
13175 | fprintf_unfiltered (fp, "thbreak"); | |
13176 | else if (tp->type == bp_hardware_breakpoint) | |
13177 | fprintf_unfiltered (fp, "hbreak"); | |
13178 | else | |
13179 | internal_error (__FILE__, __LINE__, | |
13180 | _("unhandled breakpoint type %d"), (int) tp->type); | |
13181 | ||
2060206e | 13182 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 13183 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
13184 | } |
13185 | ||
983af33b SDJ |
13186 | static void |
13187 | bkpt_create_sals_from_address (char **arg, | |
13188 | struct linespec_result *canonical, | |
13189 | enum bptype type_wanted, | |
13190 | char *addr_start, char **copy_arg) | |
13191 | { | |
13192 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13193 | addr_start, copy_arg); | |
13194 | } | |
13195 | ||
13196 | static void | |
13197 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13198 | struct linespec_result *canonical, | |
983af33b | 13199 | char *cond_string, |
e7e0cddf | 13200 | char *extra_string, |
983af33b SDJ |
13201 | enum bptype type_wanted, |
13202 | enum bpdisp disposition, | |
13203 | int thread, | |
13204 | int task, int ignore_count, | |
13205 | const struct breakpoint_ops *ops, | |
13206 | int from_tty, int enabled, | |
44f238bb | 13207 | int internal, unsigned flags) |
983af33b | 13208 | { |
023fa29b | 13209 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13210 | cond_string, extra_string, |
13211 | type_wanted, | |
983af33b SDJ |
13212 | disposition, thread, task, |
13213 | ignore_count, ops, from_tty, | |
44f238bb | 13214 | enabled, internal, flags); |
983af33b SDJ |
13215 | } |
13216 | ||
13217 | static void | |
13218 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
13219 | struct symtabs_and_lines *sals) | |
13220 | { | |
13221 | decode_linespec_default (b, s, sals); | |
13222 | } | |
13223 | ||
06edf0c0 PA |
13224 | /* Virtual table for internal breakpoints. */ |
13225 | ||
13226 | static void | |
13227 | internal_bkpt_re_set (struct breakpoint *b) | |
13228 | { | |
13229 | switch (b->type) | |
13230 | { | |
13231 | /* Delete overlay event and longjmp master breakpoints; they | |
13232 | will be reset later by breakpoint_re_set. */ | |
13233 | case bp_overlay_event: | |
13234 | case bp_longjmp_master: | |
13235 | case bp_std_terminate_master: | |
13236 | case bp_exception_master: | |
13237 | delete_breakpoint (b); | |
13238 | break; | |
13239 | ||
13240 | /* This breakpoint is special, it's set up when the inferior | |
13241 | starts and we really don't want to touch it. */ | |
13242 | case bp_shlib_event: | |
13243 | ||
13244 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13245 | it is set up, we do not want to touch it. */ | |
13246 | case bp_thread_event: | |
13247 | break; | |
13248 | } | |
13249 | } | |
13250 | ||
13251 | static void | |
13252 | internal_bkpt_check_status (bpstat bs) | |
13253 | { | |
a9b3a50f PA |
13254 | if (bs->breakpoint_at->type == bp_shlib_event) |
13255 | { | |
13256 | /* If requested, stop when the dynamic linker notifies GDB of | |
13257 | events. This allows the user to get control and place | |
13258 | breakpoints in initializer routines for dynamically loaded | |
13259 | objects (among other things). */ | |
13260 | bs->stop = stop_on_solib_events; | |
13261 | bs->print = stop_on_solib_events; | |
13262 | } | |
13263 | else | |
13264 | bs->stop = 0; | |
06edf0c0 PA |
13265 | } |
13266 | ||
13267 | static enum print_stop_action | |
13268 | internal_bkpt_print_it (bpstat bs) | |
13269 | { | |
06edf0c0 | 13270 | struct breakpoint *b; |
06edf0c0 | 13271 | |
06edf0c0 PA |
13272 | b = bs->breakpoint_at; |
13273 | ||
06edf0c0 PA |
13274 | switch (b->type) |
13275 | { | |
348d480f PA |
13276 | case bp_shlib_event: |
13277 | /* Did we stop because the user set the stop_on_solib_events | |
13278 | variable? (If so, we report this as a generic, "Stopped due | |
13279 | to shlib event" message.) */ | |
edcc5120 | 13280 | print_solib_event (0); |
348d480f PA |
13281 | break; |
13282 | ||
13283 | case bp_thread_event: | |
13284 | /* Not sure how we will get here. | |
13285 | GDB should not stop for these breakpoints. */ | |
13286 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13287 | break; |
13288 | ||
13289 | case bp_overlay_event: | |
13290 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13291 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13292 | break; |
13293 | ||
13294 | case bp_longjmp_master: | |
13295 | /* These should never be enabled. */ | |
13296 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13297 | break; |
13298 | ||
13299 | case bp_std_terminate_master: | |
13300 | /* These should never be enabled. */ | |
13301 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13302 | "gdb should not stop!\n")); | |
348d480f PA |
13303 | break; |
13304 | ||
13305 | case bp_exception_master: | |
13306 | /* These should never be enabled. */ | |
13307 | printf_filtered (_("Exception Master Breakpoint: " | |
13308 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13309 | break; |
13310 | } | |
13311 | ||
001c8c33 | 13312 | return PRINT_NOTHING; |
06edf0c0 PA |
13313 | } |
13314 | ||
13315 | static void | |
13316 | internal_bkpt_print_mention (struct breakpoint *b) | |
13317 | { | |
13318 | /* Nothing to mention. These breakpoints are internal. */ | |
13319 | } | |
13320 | ||
06edf0c0 PA |
13321 | /* Virtual table for momentary breakpoints */ |
13322 | ||
13323 | static void | |
13324 | momentary_bkpt_re_set (struct breakpoint *b) | |
13325 | { | |
13326 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 13327 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
13328 | Otherwise these should have been blown away via the cleanup chain |
13329 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13330 | } | |
13331 | ||
13332 | static void | |
13333 | momentary_bkpt_check_status (bpstat bs) | |
13334 | { | |
13335 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13336 | } | |
13337 | ||
13338 | static enum print_stop_action | |
13339 | momentary_bkpt_print_it (bpstat bs) | |
13340 | { | |
79a45e25 PA |
13341 | struct ui_out *uiout = current_uiout; |
13342 | ||
001c8c33 | 13343 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13344 | { |
001c8c33 | 13345 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13346 | |
001c8c33 PA |
13347 | switch (b->type) |
13348 | { | |
13349 | case bp_finish: | |
13350 | ui_out_field_string | |
13351 | (uiout, "reason", | |
13352 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13353 | break; | |
348d480f | 13354 | |
001c8c33 PA |
13355 | case bp_until: |
13356 | ui_out_field_string | |
13357 | (uiout, "reason", | |
13358 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13359 | break; | |
13360 | } | |
348d480f PA |
13361 | } |
13362 | ||
001c8c33 | 13363 | return PRINT_UNKNOWN; |
348d480f PA |
13364 | } |
13365 | ||
06edf0c0 PA |
13366 | static void |
13367 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13368 | { |
06edf0c0 | 13369 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13370 | } |
13371 | ||
e2e4d78b JK |
13372 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13373 | ||
13374 | It gets cleared already on the removal of the first one of such placed | |
13375 | breakpoints. This is OK as they get all removed altogether. */ | |
13376 | ||
13377 | static void | |
13378 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13379 | { | |
13380 | struct thread_info *tp = find_thread_id (self->thread); | |
13381 | ||
13382 | if (tp) | |
13383 | tp->initiating_frame = null_frame_id; | |
13384 | ||
13385 | momentary_breakpoint_ops.dtor (self); | |
13386 | } | |
13387 | ||
55aa24fb SDJ |
13388 | /* Specific methods for probe breakpoints. */ |
13389 | ||
13390 | static int | |
13391 | bkpt_probe_insert_location (struct bp_location *bl) | |
13392 | { | |
13393 | int v = bkpt_insert_location (bl); | |
13394 | ||
13395 | if (v == 0) | |
13396 | { | |
13397 | /* The insertion was successful, now let's set the probe's semaphore | |
13398 | if needed. */ | |
729662a5 TT |
13399 | bl->probe.probe->pops->set_semaphore (bl->probe.probe, |
13400 | bl->probe.objfile, | |
13401 | bl->gdbarch); | |
55aa24fb SDJ |
13402 | } |
13403 | ||
13404 | return v; | |
13405 | } | |
13406 | ||
13407 | static int | |
13408 | bkpt_probe_remove_location (struct bp_location *bl) | |
13409 | { | |
13410 | /* Let's clear the semaphore before removing the location. */ | |
729662a5 TT |
13411 | bl->probe.probe->pops->clear_semaphore (bl->probe.probe, |
13412 | bl->probe.objfile, | |
13413 | bl->gdbarch); | |
55aa24fb SDJ |
13414 | |
13415 | return bkpt_remove_location (bl); | |
13416 | } | |
13417 | ||
13418 | static void | |
13419 | bkpt_probe_create_sals_from_address (char **arg, | |
13420 | struct linespec_result *canonical, | |
13421 | enum bptype type_wanted, | |
13422 | char *addr_start, char **copy_arg) | |
13423 | { | |
13424 | struct linespec_sals lsal; | |
13425 | ||
13426 | lsal.sals = parse_probes (arg, canonical); | |
13427 | ||
13428 | *copy_arg = xstrdup (canonical->addr_string); | |
13429 | lsal.canonical = xstrdup (*copy_arg); | |
13430 | ||
13431 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13432 | } | |
13433 | ||
13434 | static void | |
13435 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
13436 | struct symtabs_and_lines *sals) | |
13437 | { | |
13438 | *sals = parse_probes (s, NULL); | |
13439 | if (!sals->sals) | |
13440 | error (_("probe not found")); | |
13441 | } | |
13442 | ||
348d480f | 13443 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13444 | |
348d480f PA |
13445 | static void |
13446 | tracepoint_re_set (struct breakpoint *b) | |
13447 | { | |
13448 | breakpoint_re_set_default (b); | |
13449 | } | |
876fa593 | 13450 | |
348d480f PA |
13451 | static int |
13452 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13453 | struct address_space *aspace, CORE_ADDR bp_addr, |
13454 | const struct target_waitstatus *ws) | |
348d480f PA |
13455 | { |
13456 | /* By definition, the inferior does not report stops at | |
13457 | tracepoints. */ | |
13458 | return 0; | |
74960c60 VP |
13459 | } |
13460 | ||
13461 | static void | |
348d480f PA |
13462 | tracepoint_print_one_detail (const struct breakpoint *self, |
13463 | struct ui_out *uiout) | |
74960c60 | 13464 | { |
d9b3f62e PA |
13465 | struct tracepoint *tp = (struct tracepoint *) self; |
13466 | if (tp->static_trace_marker_id) | |
348d480f PA |
13467 | { |
13468 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13469 | |
348d480f PA |
13470 | ui_out_text (uiout, "\tmarker id is "); |
13471 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13472 | tp->static_trace_marker_id); |
348d480f PA |
13473 | ui_out_text (uiout, "\n"); |
13474 | } | |
0d381245 VP |
13475 | } |
13476 | ||
a474d7c2 | 13477 | static void |
348d480f | 13478 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13479 | { |
79a45e25 | 13480 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13481 | return; |
cc59ec59 | 13482 | |
348d480f PA |
13483 | switch (b->type) |
13484 | { | |
13485 | case bp_tracepoint: | |
13486 | printf_filtered (_("Tracepoint")); | |
13487 | printf_filtered (_(" %d"), b->number); | |
13488 | break; | |
13489 | case bp_fast_tracepoint: | |
13490 | printf_filtered (_("Fast tracepoint")); | |
13491 | printf_filtered (_(" %d"), b->number); | |
13492 | break; | |
13493 | case bp_static_tracepoint: | |
13494 | printf_filtered (_("Static tracepoint")); | |
13495 | printf_filtered (_(" %d"), b->number); | |
13496 | break; | |
13497 | default: | |
13498 | internal_error (__FILE__, __LINE__, | |
13499 | _("unhandled tracepoint type %d"), (int) b->type); | |
13500 | } | |
13501 | ||
13502 | say_where (b); | |
a474d7c2 PA |
13503 | } |
13504 | ||
348d480f | 13505 | static void |
d9b3f62e | 13506 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13507 | { |
d9b3f62e PA |
13508 | struct tracepoint *tp = (struct tracepoint *) self; |
13509 | ||
13510 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13511 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13512 | if (self->type == bp_static_tracepoint) |
348d480f | 13513 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13514 | else if (self->type == bp_tracepoint) |
348d480f PA |
13515 | fprintf_unfiltered (fp, "trace"); |
13516 | else | |
13517 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13518 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13519 | |
d9b3f62e PA |
13520 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13521 | print_recreate_thread (self, fp); | |
13522 | ||
13523 | if (tp->pass_count) | |
13524 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13525 | } |
13526 | ||
983af33b SDJ |
13527 | static void |
13528 | tracepoint_create_sals_from_address (char **arg, | |
13529 | struct linespec_result *canonical, | |
13530 | enum bptype type_wanted, | |
13531 | char *addr_start, char **copy_arg) | |
13532 | { | |
13533 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13534 | addr_start, copy_arg); | |
13535 | } | |
13536 | ||
13537 | static void | |
13538 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13539 | struct linespec_result *canonical, | |
983af33b | 13540 | char *cond_string, |
e7e0cddf | 13541 | char *extra_string, |
983af33b SDJ |
13542 | enum bptype type_wanted, |
13543 | enum bpdisp disposition, | |
13544 | int thread, | |
13545 | int task, int ignore_count, | |
13546 | const struct breakpoint_ops *ops, | |
13547 | int from_tty, int enabled, | |
44f238bb | 13548 | int internal, unsigned flags) |
983af33b | 13549 | { |
023fa29b | 13550 | create_breakpoints_sal_default (gdbarch, canonical, |
e7e0cddf SS |
13551 | cond_string, extra_string, |
13552 | type_wanted, | |
983af33b SDJ |
13553 | disposition, thread, task, |
13554 | ignore_count, ops, from_tty, | |
44f238bb | 13555 | enabled, internal, flags); |
983af33b SDJ |
13556 | } |
13557 | ||
13558 | static void | |
13559 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13560 | struct symtabs_and_lines *sals) | |
13561 | { | |
13562 | decode_linespec_default (b, s, sals); | |
13563 | } | |
13564 | ||
2060206e | 13565 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13566 | |
55aa24fb SDJ |
13567 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13568 | static probe. */ | |
13569 | ||
13570 | static void | |
13571 | tracepoint_probe_create_sals_from_address (char **arg, | |
13572 | struct linespec_result *canonical, | |
13573 | enum bptype type_wanted, | |
13574 | char *addr_start, char **copy_arg) | |
13575 | { | |
13576 | /* We use the same method for breakpoint on probes. */ | |
13577 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13578 | addr_start, copy_arg); | |
13579 | } | |
13580 | ||
13581 | static void | |
13582 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13583 | struct symtabs_and_lines *sals) | |
13584 | { | |
13585 | /* We use the same method for breakpoint on probes. */ | |
13586 | bkpt_probe_decode_linespec (b, s, sals); | |
13587 | } | |
13588 | ||
13589 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13590 | ||
5c2b4418 HZ |
13591 | /* Dprintf breakpoint_ops methods. */ |
13592 | ||
13593 | static void | |
13594 | dprintf_re_set (struct breakpoint *b) | |
13595 | { | |
13596 | breakpoint_re_set_default (b); | |
13597 | ||
13598 | /* This breakpoint could have been pending, and be resolved now, and | |
13599 | if so, we should now have the extra string. If we don't, the | |
13600 | dprintf was malformed when created, but we couldn't tell because | |
13601 | we can't extract the extra string until the location is | |
13602 | resolved. */ | |
13603 | if (b->loc != NULL && b->extra_string == NULL) | |
13604 | error (_("Format string required")); | |
13605 | ||
13606 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13607 | 2 - create a dprintf, which resolves fine. | |
13608 | 3 - disconnect from target 1 | |
13609 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13610 | ||
13611 | After steps #3/#4, you'll want the dprintf command list to | |
13612 | be updated, because target 1 and 2 may well return different | |
13613 | answers for target_can_run_breakpoint_commands(). | |
13614 | Given absence of finer grained resetting, we get to do | |
13615 | it all the time. */ | |
13616 | if (b->extra_string != NULL) | |
13617 | update_dprintf_command_list (b); | |
13618 | } | |
13619 | ||
2d9442cc HZ |
13620 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13621 | ||
13622 | static void | |
13623 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13624 | { | |
13625 | fprintf_unfiltered (fp, "dprintf %s%s", tp->addr_string, | |
13626 | tp->extra_string); | |
13627 | print_recreate_thread (tp, fp); | |
13628 | } | |
13629 | ||
9d6e6e84 HZ |
13630 | /* Implement the "after_condition_true" breakpoint_ops method for |
13631 | dprintf. | |
13632 | ||
13633 | dprintf's are implemented with regular commands in their command | |
13634 | list, but we run the commands here instead of before presenting the | |
13635 | stop to the user, as dprintf's don't actually cause a stop. This | |
13636 | also makes it so that the commands of multiple dprintfs at the same | |
13637 | address are all handled. */ | |
13638 | ||
13639 | static void | |
13640 | dprintf_after_condition_true (struct bpstats *bs) | |
13641 | { | |
13642 | struct cleanup *old_chain; | |
13643 | struct bpstats tmp_bs = { NULL }; | |
13644 | struct bpstats *tmp_bs_p = &tmp_bs; | |
13645 | ||
13646 | /* dprintf's never cause a stop. This wasn't set in the | |
13647 | check_status hook instead because that would make the dprintf's | |
13648 | condition not be evaluated. */ | |
13649 | bs->stop = 0; | |
13650 | ||
13651 | /* Run the command list here. Take ownership of it instead of | |
13652 | copying. We never want these commands to run later in | |
13653 | bpstat_do_actions, if a breakpoint that causes a stop happens to | |
13654 | be set at same address as this dprintf, or even if running the | |
13655 | commands here throws. */ | |
13656 | tmp_bs.commands = bs->commands; | |
13657 | bs->commands = NULL; | |
13658 | old_chain = make_cleanup_decref_counted_command_line (&tmp_bs.commands); | |
13659 | ||
13660 | bpstat_do_actions_1 (&tmp_bs_p); | |
13661 | ||
13662 | /* 'tmp_bs.commands' will usually be NULL by now, but | |
13663 | bpstat_do_actions_1 may return early without processing the whole | |
13664 | list. */ | |
13665 | do_cleanups (old_chain); | |
13666 | } | |
13667 | ||
983af33b SDJ |
13668 | /* The breakpoint_ops structure to be used on static tracepoints with |
13669 | markers (`-m'). */ | |
13670 | ||
13671 | static void | |
13672 | strace_marker_create_sals_from_address (char **arg, | |
13673 | struct linespec_result *canonical, | |
13674 | enum bptype type_wanted, | |
13675 | char *addr_start, char **copy_arg) | |
13676 | { | |
13677 | struct linespec_sals lsal; | |
13678 | ||
13679 | lsal.sals = decode_static_tracepoint_spec (arg); | |
13680 | ||
13681 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
13682 | ||
13683 | canonical->addr_string = xstrdup (*copy_arg); | |
13684 | lsal.canonical = xstrdup (*copy_arg); | |
13685 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13686 | } | |
13687 | ||
13688 | static void | |
13689 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13690 | struct linespec_result *canonical, | |
983af33b | 13691 | char *cond_string, |
e7e0cddf | 13692 | char *extra_string, |
983af33b SDJ |
13693 | enum bptype type_wanted, |
13694 | enum bpdisp disposition, | |
13695 | int thread, | |
13696 | int task, int ignore_count, | |
13697 | const struct breakpoint_ops *ops, | |
13698 | int from_tty, int enabled, | |
44f238bb | 13699 | int internal, unsigned flags) |
983af33b SDJ |
13700 | { |
13701 | int i; | |
52d361e1 YQ |
13702 | struct linespec_sals *lsal = VEC_index (linespec_sals, |
13703 | canonical->sals, 0); | |
983af33b SDJ |
13704 | |
13705 | /* If the user is creating a static tracepoint by marker id | |
13706 | (strace -m MARKER_ID), then store the sals index, so that | |
13707 | breakpoint_re_set can try to match up which of the newly | |
13708 | found markers corresponds to this one, and, don't try to | |
13709 | expand multiple locations for each sal, given than SALS | |
13710 | already should contain all sals for MARKER_ID. */ | |
13711 | ||
13712 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13713 | { | |
13714 | struct symtabs_and_lines expanded; | |
13715 | struct tracepoint *tp; | |
13716 | struct cleanup *old_chain; | |
13717 | char *addr_string; | |
13718 | ||
13719 | expanded.nelts = 1; | |
13720 | expanded.sals = &lsal->sals.sals[i]; | |
13721 | ||
13722 | addr_string = xstrdup (canonical->addr_string); | |
13723 | old_chain = make_cleanup (xfree, addr_string); | |
13724 | ||
13725 | tp = XCNEW (struct tracepoint); | |
13726 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
13727 | addr_string, NULL, | |
e7e0cddf SS |
13728 | cond_string, extra_string, |
13729 | type_wanted, disposition, | |
983af33b | 13730 | thread, task, ignore_count, ops, |
44f238bb | 13731 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13732 | canonical->special_display); |
13733 | /* Given that its possible to have multiple markers with | |
13734 | the same string id, if the user is creating a static | |
13735 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13736 | store the sals index, so that breakpoint_re_set can | |
13737 | try to match up which of the newly found markers | |
13738 | corresponds to this one */ | |
13739 | tp->static_trace_marker_id_idx = i; | |
13740 | ||
13741 | install_breakpoint (internal, &tp->base, 0); | |
13742 | ||
13743 | discard_cleanups (old_chain); | |
13744 | } | |
13745 | } | |
13746 | ||
13747 | static void | |
13748 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
13749 | struct symtabs_and_lines *sals) | |
13750 | { | |
13751 | struct tracepoint *tp = (struct tracepoint *) b; | |
13752 | ||
13753 | *sals = decode_static_tracepoint_spec (s); | |
13754 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
13755 | { | |
13756 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13757 | sals->nelts = 1; | |
13758 | } | |
13759 | else | |
13760 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13761 | } | |
13762 | ||
13763 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13764 | ||
13765 | static int | |
13766 | strace_marker_p (struct breakpoint *b) | |
13767 | { | |
13768 | return b->ops == &strace_marker_breakpoint_ops; | |
13769 | } | |
13770 | ||
53a5351d | 13771 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13772 | structures. */ |
c906108c SS |
13773 | |
13774 | void | |
fba45db2 | 13775 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13776 | { |
52f0bd74 | 13777 | struct breakpoint *b; |
c906108c | 13778 | |
8a3fe4f8 | 13779 | gdb_assert (bpt != NULL); |
c906108c | 13780 | |
4a64f543 MS |
13781 | /* Has this bp already been deleted? This can happen because |
13782 | multiple lists can hold pointers to bp's. bpstat lists are | |
13783 | especial culprits. | |
13784 | ||
13785 | One example of this happening is a watchpoint's scope bp. When | |
13786 | the scope bp triggers, we notice that the watchpoint is out of | |
13787 | scope, and delete it. We also delete its scope bp. But the | |
13788 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13789 | That bpstat is then checked for auto-deleting bp's, which are | |
13790 | deleted. | |
13791 | ||
13792 | A real solution to this problem might involve reference counts in | |
13793 | bp's, and/or giving them pointers back to their referencing | |
13794 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13795 | storage when no more references were extent. A cheaper bandaid | |
13796 | was chosen. */ | |
c906108c SS |
13797 | if (bpt->type == bp_none) |
13798 | return; | |
13799 | ||
4a64f543 MS |
13800 | /* At least avoid this stale reference until the reference counting |
13801 | of breakpoints gets resolved. */ | |
d0fb5eae | 13802 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13803 | { |
d0fb5eae | 13804 | struct breakpoint *related; |
3a5c3e22 | 13805 | struct watchpoint *w; |
d0fb5eae JK |
13806 | |
13807 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13808 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13809 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13810 | w = (struct watchpoint *) bpt; |
13811 | else | |
13812 | w = NULL; | |
13813 | if (w != NULL) | |
13814 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13815 | |
13816 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13817 | for (related = bpt; related->related_breakpoint != bpt; | |
13818 | related = related->related_breakpoint); | |
13819 | related->related_breakpoint = bpt->related_breakpoint; | |
13820 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13821 | } |
13822 | ||
a9634178 TJB |
13823 | /* watch_command_1 creates a watchpoint but only sets its number if |
13824 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13825 | a problem in that process, we'll be asked to delete the half-created | |
13826 | watchpoint. In that case, don't announce the deletion. */ | |
13827 | if (bpt->number) | |
13828 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13829 | |
c906108c SS |
13830 | if (breakpoint_chain == bpt) |
13831 | breakpoint_chain = bpt->next; | |
13832 | ||
c906108c SS |
13833 | ALL_BREAKPOINTS (b) |
13834 | if (b->next == bpt) | |
c5aa993b JM |
13835 | { |
13836 | b->next = bpt->next; | |
13837 | break; | |
13838 | } | |
c906108c | 13839 | |
f431efe5 PA |
13840 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13841 | been freed. */ | |
13842 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13843 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13844 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13845 | commands are associated with the bpstat; if we remove it here, | |
13846 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13847 | event-top.c won't do anything, and temporary breakpoints with | |
13848 | commands won't work. */ | |
13849 | ||
13850 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13851 | ||
4a64f543 MS |
13852 | /* Now that breakpoint is removed from breakpoint list, update the |
13853 | global location list. This will remove locations that used to | |
13854 | belong to this breakpoint. Do this before freeing the breakpoint | |
13855 | itself, since remove_breakpoint looks at location's owner. It | |
13856 | might be better design to have location completely | |
13857 | self-contained, but it's not the case now. */ | |
b60e7edf | 13858 | update_global_location_list (0); |
74960c60 | 13859 | |
348d480f | 13860 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13861 | /* On the chance that someone will soon try again to delete this |
13862 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13863 | bpt->type = bp_none; |
b8c9b27d | 13864 | xfree (bpt); |
c906108c SS |
13865 | } |
13866 | ||
4d6140d9 AC |
13867 | static void |
13868 | do_delete_breakpoint_cleanup (void *b) | |
13869 | { | |
13870 | delete_breakpoint (b); | |
13871 | } | |
13872 | ||
13873 | struct cleanup * | |
13874 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13875 | { | |
13876 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13877 | } | |
13878 | ||
51be5b68 PA |
13879 | /* Iterator function to call a user-provided callback function once |
13880 | for each of B and its related breakpoints. */ | |
13881 | ||
13882 | static void | |
13883 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13884 | void (*function) (struct breakpoint *, | |
13885 | void *), | |
13886 | void *data) | |
13887 | { | |
13888 | struct breakpoint *related; | |
13889 | ||
13890 | related = b; | |
13891 | do | |
13892 | { | |
13893 | struct breakpoint *next; | |
13894 | ||
13895 | /* FUNCTION may delete RELATED. */ | |
13896 | next = related->related_breakpoint; | |
13897 | ||
13898 | if (next == related) | |
13899 | { | |
13900 | /* RELATED is the last ring entry. */ | |
13901 | function (related, data); | |
13902 | ||
13903 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13904 | B. There's nothing left to do anyway, so just break | |
13905 | out. */ | |
13906 | break; | |
13907 | } | |
13908 | else | |
13909 | function (related, data); | |
13910 | ||
13911 | related = next; | |
13912 | } | |
13913 | while (related != b); | |
13914 | } | |
95a42b64 TT |
13915 | |
13916 | static void | |
13917 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13918 | { | |
13919 | delete_breakpoint (b); | |
13920 | } | |
13921 | ||
51be5b68 PA |
13922 | /* A callback for map_breakpoint_numbers that calls |
13923 | delete_breakpoint. */ | |
13924 | ||
13925 | static void | |
13926 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13927 | { | |
13928 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13929 | } | |
13930 | ||
c906108c | 13931 | void |
fba45db2 | 13932 | delete_command (char *arg, int from_tty) |
c906108c | 13933 | { |
35df4500 | 13934 | struct breakpoint *b, *b_tmp; |
c906108c | 13935 | |
ea9365bb TT |
13936 | dont_repeat (); |
13937 | ||
c906108c SS |
13938 | if (arg == 0) |
13939 | { | |
13940 | int breaks_to_delete = 0; | |
13941 | ||
46c6471b PA |
13942 | /* Delete all breakpoints if no argument. Do not delete |
13943 | internal breakpoints, these have to be deleted with an | |
13944 | explicit breakpoint number argument. */ | |
c5aa993b | 13945 | ALL_BREAKPOINTS (b) |
46c6471b | 13946 | if (user_breakpoint_p (b)) |
973d738b DJ |
13947 | { |
13948 | breaks_to_delete = 1; | |
13949 | break; | |
13950 | } | |
c906108c SS |
13951 | |
13952 | /* Ask user only if there are some breakpoints to delete. */ | |
13953 | if (!from_tty | |
e2e0b3e5 | 13954 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13955 | { |
35df4500 | 13956 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13957 | if (user_breakpoint_p (b)) |
c5aa993b | 13958 | delete_breakpoint (b); |
c906108c SS |
13959 | } |
13960 | } | |
13961 | else | |
51be5b68 | 13962 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13963 | } |
13964 | ||
0d381245 VP |
13965 | static int |
13966 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13967 | { |
0d381245 | 13968 | for (; loc; loc = loc->next) |
8645ff69 UW |
13969 | if (!loc->shlib_disabled |
13970 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13971 | return 0; |
13972 | return 1; | |
fe3f5fa8 VP |
13973 | } |
13974 | ||
776592bf DE |
13975 | /* Subroutine of update_breakpoint_locations to simplify it. |
13976 | Return non-zero if multiple fns in list LOC have the same name. | |
13977 | Null names are ignored. */ | |
13978 | ||
13979 | static int | |
13980 | ambiguous_names_p (struct bp_location *loc) | |
13981 | { | |
13982 | struct bp_location *l; | |
13983 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13984 | (int (*) (const void *, |
13985 | const void *)) streq, | |
776592bf DE |
13986 | NULL, xcalloc, xfree); |
13987 | ||
13988 | for (l = loc; l != NULL; l = l->next) | |
13989 | { | |
13990 | const char **slot; | |
13991 | const char *name = l->function_name; | |
13992 | ||
13993 | /* Allow for some names to be NULL, ignore them. */ | |
13994 | if (name == NULL) | |
13995 | continue; | |
13996 | ||
13997 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13998 | INSERT); | |
4a64f543 MS |
13999 | /* NOTE: We can assume slot != NULL here because xcalloc never |
14000 | returns NULL. */ | |
776592bf DE |
14001 | if (*slot != NULL) |
14002 | { | |
14003 | htab_delete (htab); | |
14004 | return 1; | |
14005 | } | |
14006 | *slot = name; | |
14007 | } | |
14008 | ||
14009 | htab_delete (htab); | |
14010 | return 0; | |
14011 | } | |
14012 | ||
0fb4aa4b PA |
14013 | /* When symbols change, it probably means the sources changed as well, |
14014 | and it might mean the static tracepoint markers are no longer at | |
14015 | the same address or line numbers they used to be at last we | |
14016 | checked. Losing your static tracepoints whenever you rebuild is | |
14017 | undesirable. This function tries to resync/rematch gdb static | |
14018 | tracepoints with the markers on the target, for static tracepoints | |
14019 | that have not been set by marker id. Static tracepoint that have | |
14020 | been set by marker id are reset by marker id in breakpoint_re_set. | |
14021 | The heuristic is: | |
14022 | ||
14023 | 1) For a tracepoint set at a specific address, look for a marker at | |
14024 | the old PC. If one is found there, assume to be the same marker. | |
14025 | If the name / string id of the marker found is different from the | |
14026 | previous known name, assume that means the user renamed the marker | |
14027 | in the sources, and output a warning. | |
14028 | ||
14029 | 2) For a tracepoint set at a given line number, look for a marker | |
14030 | at the new address of the old line number. If one is found there, | |
14031 | assume to be the same marker. If the name / string id of the | |
14032 | marker found is different from the previous known name, assume that | |
14033 | means the user renamed the marker in the sources, and output a | |
14034 | warning. | |
14035 | ||
14036 | 3) If a marker is no longer found at the same address or line, it | |
14037 | may mean the marker no longer exists. But it may also just mean | |
14038 | the code changed a bit. Maybe the user added a few lines of code | |
14039 | that made the marker move up or down (in line number terms). Ask | |
14040 | the target for info about the marker with the string id as we knew | |
14041 | it. If found, update line number and address in the matching | |
14042 | static tracepoint. This will get confused if there's more than one | |
14043 | marker with the same ID (possible in UST, although unadvised | |
14044 | precisely because it confuses tools). */ | |
14045 | ||
14046 | static struct symtab_and_line | |
14047 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
14048 | { | |
d9b3f62e | 14049 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
14050 | struct static_tracepoint_marker marker; |
14051 | CORE_ADDR pc; | |
0fb4aa4b PA |
14052 | |
14053 | pc = sal.pc; | |
14054 | if (sal.line) | |
14055 | find_line_pc (sal.symtab, sal.line, &pc); | |
14056 | ||
14057 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
14058 | { | |
d9b3f62e | 14059 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
14060 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
14061 | b->number, | |
d9b3f62e | 14062 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 14063 | |
d9b3f62e PA |
14064 | xfree (tp->static_trace_marker_id); |
14065 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
14066 | release_static_tracepoint_marker (&marker); |
14067 | ||
14068 | return sal; | |
14069 | } | |
14070 | ||
14071 | /* Old marker wasn't found on target at lineno. Try looking it up | |
14072 | by string ID. */ | |
14073 | if (!sal.explicit_pc | |
14074 | && sal.line != 0 | |
14075 | && sal.symtab != NULL | |
d9b3f62e | 14076 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
14077 | { |
14078 | VEC(static_tracepoint_marker_p) *markers; | |
14079 | ||
14080 | markers | |
d9b3f62e | 14081 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
14082 | |
14083 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
14084 | { | |
80e1d417 | 14085 | struct symtab_and_line sal2; |
0fb4aa4b | 14086 | struct symbol *sym; |
80e1d417 | 14087 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 14088 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 14089 | |
80e1d417 | 14090 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 14091 | |
d9b3f62e | 14092 | xfree (tp->static_trace_marker_id); |
80e1d417 | 14093 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
14094 | |
14095 | warning (_("marker for static tracepoint %d (%s) not " | |
14096 | "found at previous line number"), | |
d9b3f62e | 14097 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 14098 | |
80e1d417 | 14099 | init_sal (&sal2); |
0fb4aa4b | 14100 | |
80e1d417 | 14101 | sal2.pc = tpmarker->address; |
0fb4aa4b | 14102 | |
80e1d417 AS |
14103 | sal2 = find_pc_line (tpmarker->address, 0); |
14104 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
14105 | ui_out_text (uiout, "Now in "); |
14106 | if (sym) | |
14107 | { | |
14108 | ui_out_field_string (uiout, "func", | |
14109 | SYMBOL_PRINT_NAME (sym)); | |
14110 | ui_out_text (uiout, " at "); | |
14111 | } | |
05cba821 JK |
14112 | ui_out_field_string (uiout, "file", |
14113 | symtab_to_filename_for_display (sal2.symtab)); | |
0fb4aa4b PA |
14114 | ui_out_text (uiout, ":"); |
14115 | ||
14116 | if (ui_out_is_mi_like_p (uiout)) | |
14117 | { | |
0b0865da | 14118 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 14119 | |
f35a17b5 | 14120 | ui_out_field_string (uiout, "fullname", fullname); |
0fb4aa4b PA |
14121 | } |
14122 | ||
80e1d417 | 14123 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
14124 | ui_out_text (uiout, "\n"); |
14125 | ||
80e1d417 | 14126 | b->loc->line_number = sal2.line; |
2f202fde | 14127 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b PA |
14128 | |
14129 | xfree (b->addr_string); | |
14130 | b->addr_string = xstrprintf ("%s:%d", | |
05cba821 | 14131 | symtab_to_filename_for_display (sal2.symtab), |
f8eba3c6 | 14132 | b->loc->line_number); |
0fb4aa4b PA |
14133 | |
14134 | /* Might be nice to check if function changed, and warn if | |
14135 | so. */ | |
14136 | ||
80e1d417 | 14137 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
14138 | } |
14139 | } | |
14140 | return sal; | |
14141 | } | |
14142 | ||
8d3788bd VP |
14143 | /* Returns 1 iff locations A and B are sufficiently same that |
14144 | we don't need to report breakpoint as changed. */ | |
14145 | ||
14146 | static int | |
14147 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
14148 | { | |
14149 | while (a && b) | |
14150 | { | |
14151 | if (a->address != b->address) | |
14152 | return 0; | |
14153 | ||
14154 | if (a->shlib_disabled != b->shlib_disabled) | |
14155 | return 0; | |
14156 | ||
14157 | if (a->enabled != b->enabled) | |
14158 | return 0; | |
14159 | ||
14160 | a = a->next; | |
14161 | b = b->next; | |
14162 | } | |
14163 | ||
14164 | if ((a == NULL) != (b == NULL)) | |
14165 | return 0; | |
14166 | ||
14167 | return 1; | |
14168 | } | |
14169 | ||
f1310107 TJB |
14170 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
14171 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
14172 | a ranged breakpoint. */ | |
14173 | ||
0e30163f | 14174 | void |
0d381245 | 14175 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
14176 | struct symtabs_and_lines sals, |
14177 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
14178 | { |
14179 | int i; | |
0d381245 VP |
14180 | struct bp_location *existing_locations = b->loc; |
14181 | ||
f8eba3c6 TT |
14182 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
14183 | { | |
14184 | /* Ranged breakpoints have only one start location and one end | |
14185 | location. */ | |
14186 | b->enable_state = bp_disabled; | |
14187 | update_global_location_list (1); | |
14188 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
14189 | "multiple locations found\n"), | |
14190 | b->number); | |
14191 | return; | |
14192 | } | |
f1310107 | 14193 | |
4a64f543 MS |
14194 | /* If there's no new locations, and all existing locations are |
14195 | pending, don't do anything. This optimizes the common case where | |
14196 | all locations are in the same shared library, that was unloaded. | |
14197 | We'd like to retain the location, so that when the library is | |
14198 | loaded again, we don't loose the enabled/disabled status of the | |
14199 | individual locations. */ | |
0d381245 | 14200 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
14201 | return; |
14202 | ||
fe3f5fa8 VP |
14203 | b->loc = NULL; |
14204 | ||
0d381245 | 14205 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 14206 | { |
f8eba3c6 TT |
14207 | struct bp_location *new_loc; |
14208 | ||
14209 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
14210 | ||
14211 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 14212 | |
0d381245 VP |
14213 | /* Reparse conditions, they might contain references to the |
14214 | old symtab. */ | |
14215 | if (b->cond_string != NULL) | |
14216 | { | |
bbc13ae3 | 14217 | const char *s; |
bfd189b1 | 14218 | volatile struct gdb_exception e; |
fe3f5fa8 | 14219 | |
0d381245 VP |
14220 | s = b->cond_string; |
14221 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14222 | { | |
1bb9788d TT |
14223 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
14224 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
14225 | 0); |
14226 | } | |
14227 | if (e.reason < 0) | |
14228 | { | |
3e43a32a MS |
14229 | warning (_("failed to reevaluate condition " |
14230 | "for breakpoint %d: %s"), | |
0d381245 VP |
14231 | b->number, e.message); |
14232 | new_loc->enabled = 0; | |
14233 | } | |
14234 | } | |
fe3f5fa8 | 14235 | |
f1310107 TJB |
14236 | if (sals_end.nelts) |
14237 | { | |
14238 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
14239 | ||
14240 | new_loc->length = end - sals.sals[0].pc + 1; | |
14241 | } | |
0d381245 | 14242 | } |
fe3f5fa8 | 14243 | |
514f746b AR |
14244 | /* Update locations of permanent breakpoints. */ |
14245 | if (b->enable_state == bp_permanent) | |
14246 | make_breakpoint_permanent (b); | |
14247 | ||
4a64f543 MS |
14248 | /* If possible, carry over 'disable' status from existing |
14249 | breakpoints. */ | |
0d381245 VP |
14250 | { |
14251 | struct bp_location *e = existing_locations; | |
776592bf DE |
14252 | /* If there are multiple breakpoints with the same function name, |
14253 | e.g. for inline functions, comparing function names won't work. | |
14254 | Instead compare pc addresses; this is just a heuristic as things | |
14255 | may have moved, but in practice it gives the correct answer | |
14256 | often enough until a better solution is found. */ | |
14257 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
14258 | ||
0d381245 VP |
14259 | for (; e; e = e->next) |
14260 | { | |
14261 | if (!e->enabled && e->function_name) | |
14262 | { | |
14263 | struct bp_location *l = b->loc; | |
776592bf DE |
14264 | if (have_ambiguous_names) |
14265 | { | |
14266 | for (; l; l = l->next) | |
f1310107 | 14267 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
14268 | { |
14269 | l->enabled = 0; | |
14270 | break; | |
14271 | } | |
14272 | } | |
14273 | else | |
14274 | { | |
14275 | for (; l; l = l->next) | |
14276 | if (l->function_name | |
14277 | && strcmp (e->function_name, l->function_name) == 0) | |
14278 | { | |
14279 | l->enabled = 0; | |
14280 | break; | |
14281 | } | |
14282 | } | |
0d381245 VP |
14283 | } |
14284 | } | |
14285 | } | |
fe3f5fa8 | 14286 | |
8d3788bd VP |
14287 | if (!locations_are_equal (existing_locations, b->loc)) |
14288 | observer_notify_breakpoint_modified (b); | |
14289 | ||
b60e7edf | 14290 | update_global_location_list (1); |
fe3f5fa8 VP |
14291 | } |
14292 | ||
ef23e705 TJB |
14293 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
14294 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
14295 | ||
14296 | static struct symtabs_and_lines | |
14297 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
14298 | { | |
14299 | char *s; | |
02d20e4a | 14300 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 14301 | volatile struct gdb_exception e; |
ef23e705 | 14302 | |
983af33b | 14303 | gdb_assert (b->ops != NULL); |
ef23e705 | 14304 | s = addr_string; |
ef23e705 TJB |
14305 | |
14306 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14307 | { | |
983af33b | 14308 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
14309 | } |
14310 | if (e.reason < 0) | |
14311 | { | |
14312 | int not_found_and_ok = 0; | |
14313 | /* For pending breakpoints, it's expected that parsing will | |
14314 | fail until the right shared library is loaded. User has | |
14315 | already told to create pending breakpoints and don't need | |
14316 | extra messages. If breakpoint is in bp_shlib_disabled | |
14317 | state, then user already saw the message about that | |
14318 | breakpoint being disabled, and don't want to see more | |
14319 | errors. */ | |
58438ac1 | 14320 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14321 | && (b->condition_not_parsed |
14322 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14323 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14324 | || b->enable_state == bp_disabled)) |
14325 | not_found_and_ok = 1; | |
14326 | ||
14327 | if (!not_found_and_ok) | |
14328 | { | |
14329 | /* We surely don't want to warn about the same breakpoint | |
14330 | 10 times. One solution, implemented here, is disable | |
14331 | the breakpoint on error. Another solution would be to | |
14332 | have separate 'warning emitted' flag. Since this | |
14333 | happens only when a binary has changed, I don't know | |
14334 | which approach is better. */ | |
14335 | b->enable_state = bp_disabled; | |
14336 | throw_exception (e); | |
14337 | } | |
14338 | } | |
14339 | ||
58438ac1 | 14340 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 14341 | { |
f8eba3c6 | 14342 | int i; |
ef23e705 | 14343 | |
f8eba3c6 TT |
14344 | for (i = 0; i < sals.nelts; ++i) |
14345 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
14346 | if (b->condition_not_parsed && s && s[0]) |
14347 | { | |
ed1d1739 KS |
14348 | char *cond_string, *extra_string; |
14349 | int thread, task; | |
ef23e705 TJB |
14350 | |
14351 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
14352 | &cond_string, &thread, &task, |
14353 | &extra_string); | |
ef23e705 TJB |
14354 | if (cond_string) |
14355 | b->cond_string = cond_string; | |
14356 | b->thread = thread; | |
14357 | b->task = task; | |
e7e0cddf SS |
14358 | if (extra_string) |
14359 | b->extra_string = extra_string; | |
ef23e705 TJB |
14360 | b->condition_not_parsed = 0; |
14361 | } | |
14362 | ||
983af33b | 14363 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14364 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14365 | |
58438ac1 TT |
14366 | *found = 1; |
14367 | } | |
14368 | else | |
14369 | *found = 0; | |
ef23e705 TJB |
14370 | |
14371 | return sals; | |
14372 | } | |
14373 | ||
348d480f PA |
14374 | /* The default re_set method, for typical hardware or software |
14375 | breakpoints. Reevaluate the breakpoint and recreate its | |
14376 | locations. */ | |
14377 | ||
14378 | static void | |
28010a5d | 14379 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14380 | { |
14381 | int found; | |
f1310107 | 14382 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14383 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14384 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
14385 | |
14386 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
14387 | if (found) | |
14388 | { | |
14389 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14390 | expanded = sals; |
ef23e705 TJB |
14391 | } |
14392 | ||
f1310107 TJB |
14393 | if (b->addr_string_range_end) |
14394 | { | |
14395 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
14396 | if (found) | |
14397 | { | |
14398 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14399 | expanded_end = sals_end; |
f1310107 TJB |
14400 | } |
14401 | } | |
14402 | ||
14403 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14404 | } |
14405 | ||
983af33b SDJ |
14406 | /* Default method for creating SALs from an address string. It basically |
14407 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14408 | ||
14409 | static void | |
14410 | create_sals_from_address_default (char **arg, | |
14411 | struct linespec_result *canonical, | |
14412 | enum bptype type_wanted, | |
14413 | char *addr_start, char **copy_arg) | |
14414 | { | |
14415 | parse_breakpoint_sals (arg, canonical); | |
14416 | } | |
14417 | ||
14418 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14419 | function for the `create_breakpoints_sal' method of | |
14420 | breakpoint_ops. */ | |
14421 | ||
14422 | static void | |
14423 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14424 | struct linespec_result *canonical, | |
983af33b | 14425 | char *cond_string, |
e7e0cddf | 14426 | char *extra_string, |
983af33b SDJ |
14427 | enum bptype type_wanted, |
14428 | enum bpdisp disposition, | |
14429 | int thread, | |
14430 | int task, int ignore_count, | |
14431 | const struct breakpoint_ops *ops, | |
14432 | int from_tty, int enabled, | |
44f238bb | 14433 | int internal, unsigned flags) |
983af33b SDJ |
14434 | { |
14435 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14436 | extra_string, |
983af33b SDJ |
14437 | type_wanted, disposition, |
14438 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14439 | enabled, internal, flags); |
983af33b SDJ |
14440 | } |
14441 | ||
14442 | /* Decode the line represented by S by calling decode_line_full. This is the | |
14443 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
14444 | ||
14445 | static void | |
14446 | decode_linespec_default (struct breakpoint *b, char **s, | |
14447 | struct symtabs_and_lines *sals) | |
14448 | { | |
14449 | struct linespec_result canonical; | |
14450 | ||
14451 | init_linespec_result (&canonical); | |
14452 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
14453 | (struct symtab *) NULL, 0, | |
14454 | &canonical, multiple_symbols_all, | |
14455 | b->filter); | |
14456 | ||
14457 | /* We should get 0 or 1 resulting SALs. */ | |
14458 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14459 | ||
14460 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14461 | { | |
14462 | struct linespec_sals *lsal; | |
14463 | ||
14464 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14465 | *sals = lsal->sals; | |
14466 | /* Arrange it so the destructor does not free the | |
14467 | contents. */ | |
14468 | lsal->sals.sals = NULL; | |
14469 | } | |
14470 | ||
14471 | destroy_linespec_result (&canonical); | |
14472 | } | |
14473 | ||
28010a5d PA |
14474 | /* Prepare the global context for a re-set of breakpoint B. */ |
14475 | ||
14476 | static struct cleanup * | |
14477 | prepare_re_set_context (struct breakpoint *b) | |
14478 | { | |
14479 | struct cleanup *cleanups; | |
14480 | ||
14481 | input_radix = b->input_radix; | |
14482 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14483 | if (b->pspace != NULL) |
14484 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14485 | set_language (b->language); |
14486 | ||
14487 | return cleanups; | |
ef23e705 TJB |
14488 | } |
14489 | ||
c906108c SS |
14490 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14491 | The value we return ends up being the return value from catch_errors. | |
14492 | Unused in this case. */ | |
14493 | ||
14494 | static int | |
4efb68b1 | 14495 | breakpoint_re_set_one (void *bint) |
c906108c | 14496 | { |
4a64f543 | 14497 | /* Get past catch_errs. */ |
53a5351d | 14498 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14499 | struct cleanup *cleanups; |
c906108c | 14500 | |
348d480f PA |
14501 | cleanups = prepare_re_set_context (b); |
14502 | b->ops->re_set (b); | |
14503 | do_cleanups (cleanups); | |
c906108c SS |
14504 | return 0; |
14505 | } | |
14506 | ||
69de3c6a | 14507 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14508 | void |
69de3c6a | 14509 | breakpoint_re_set (void) |
c906108c | 14510 | { |
35df4500 | 14511 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14512 | enum language save_language; |
14513 | int save_input_radix; | |
6c95b8df | 14514 | struct cleanup *old_chain; |
c5aa993b | 14515 | |
c906108c SS |
14516 | save_language = current_language->la_language; |
14517 | save_input_radix = input_radix; | |
6c95b8df PA |
14518 | old_chain = save_current_program_space (); |
14519 | ||
35df4500 | 14520 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14521 | { |
4a64f543 | 14522 | /* Format possible error msg. */ |
fe3f5fa8 | 14523 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14524 | b->number); |
14525 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14526 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14527 | do_cleanups (cleanups); |
c5aa993b | 14528 | } |
c906108c SS |
14529 | set_language (save_language); |
14530 | input_radix = save_input_radix; | |
e62c965a | 14531 | |
0756c555 | 14532 | jit_breakpoint_re_set (); |
4efc6507 | 14533 | |
6c95b8df PA |
14534 | do_cleanups (old_chain); |
14535 | ||
af02033e PP |
14536 | create_overlay_event_breakpoint (); |
14537 | create_longjmp_master_breakpoint (); | |
14538 | create_std_terminate_master_breakpoint (); | |
186c406b | 14539 | create_exception_master_breakpoint (); |
c906108c SS |
14540 | } |
14541 | \f | |
c906108c SS |
14542 | /* Reset the thread number of this breakpoint: |
14543 | ||
14544 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14545 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14546 | void |
fba45db2 | 14547 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14548 | { |
14549 | if (b->thread != -1) | |
14550 | { | |
39f77062 KB |
14551 | if (in_thread_list (inferior_ptid)) |
14552 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14553 | |
14554 | /* We're being called after following a fork. The new fork is | |
14555 | selected as current, and unless this was a vfork will have a | |
14556 | different program space from the original thread. Reset that | |
14557 | as well. */ | |
14558 | b->loc->pspace = current_program_space; | |
c906108c SS |
14559 | } |
14560 | } | |
14561 | ||
03ac34d5 MS |
14562 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14563 | If from_tty is nonzero, it prints a message to that effect, | |
14564 | which ends with a period (no newline). */ | |
14565 | ||
c906108c | 14566 | void |
fba45db2 | 14567 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14568 | { |
52f0bd74 | 14569 | struct breakpoint *b; |
c906108c SS |
14570 | |
14571 | if (count < 0) | |
14572 | count = 0; | |
14573 | ||
14574 | ALL_BREAKPOINTS (b) | |
14575 | if (b->number == bptnum) | |
c5aa993b | 14576 | { |
d77f58be SS |
14577 | if (is_tracepoint (b)) |
14578 | { | |
14579 | if (from_tty && count != 0) | |
14580 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14581 | bptnum); | |
14582 | return; | |
14583 | } | |
14584 | ||
c5aa993b | 14585 | b->ignore_count = count; |
221ea385 KS |
14586 | if (from_tty) |
14587 | { | |
14588 | if (count == 0) | |
3e43a32a MS |
14589 | printf_filtered (_("Will stop next time " |
14590 | "breakpoint %d is reached."), | |
221ea385 KS |
14591 | bptnum); |
14592 | else if (count == 1) | |
a3f17187 | 14593 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14594 | bptnum); |
14595 | else | |
3e43a32a MS |
14596 | printf_filtered (_("Will ignore next %d " |
14597 | "crossings of breakpoint %d."), | |
221ea385 KS |
14598 | count, bptnum); |
14599 | } | |
8d3788bd | 14600 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14601 | return; |
14602 | } | |
c906108c | 14603 | |
8a3fe4f8 | 14604 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14605 | } |
14606 | ||
c906108c SS |
14607 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14608 | ||
14609 | static void | |
fba45db2 | 14610 | ignore_command (char *args, int from_tty) |
c906108c SS |
14611 | { |
14612 | char *p = args; | |
52f0bd74 | 14613 | int num; |
c906108c SS |
14614 | |
14615 | if (p == 0) | |
e2e0b3e5 | 14616 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14617 | |
c906108c | 14618 | num = get_number (&p); |
5c44784c | 14619 | if (num == 0) |
8a3fe4f8 | 14620 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14621 | if (*p == 0) |
8a3fe4f8 | 14622 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14623 | |
14624 | set_ignore_count (num, | |
14625 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14626 | from_tty); | |
221ea385 KS |
14627 | if (from_tty) |
14628 | printf_filtered ("\n"); | |
c906108c SS |
14629 | } |
14630 | \f | |
14631 | /* Call FUNCTION on each of the breakpoints | |
14632 | whose numbers are given in ARGS. */ | |
14633 | ||
14634 | static void | |
95a42b64 TT |
14635 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14636 | void *), | |
14637 | void *data) | |
c906108c | 14638 | { |
52f0bd74 AC |
14639 | int num; |
14640 | struct breakpoint *b, *tmp; | |
11cf8741 | 14641 | int match; |
197f0a60 | 14642 | struct get_number_or_range_state state; |
c906108c | 14643 | |
197f0a60 | 14644 | if (args == 0) |
e2e0b3e5 | 14645 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14646 | |
197f0a60 TT |
14647 | init_number_or_range (&state, args); |
14648 | ||
14649 | while (!state.finished) | |
c906108c | 14650 | { |
197f0a60 TT |
14651 | char *p = state.string; |
14652 | ||
11cf8741 | 14653 | match = 0; |
c5aa993b | 14654 | |
197f0a60 | 14655 | num = get_number_or_range (&state); |
5c44784c | 14656 | if (num == 0) |
c5aa993b | 14657 | { |
8a3fe4f8 | 14658 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14659 | } |
14660 | else | |
14661 | { | |
14662 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14663 | if (b->number == num) | |
14664 | { | |
11cf8741 | 14665 | match = 1; |
cdac0397 | 14666 | function (b, data); |
11cf8741 | 14667 | break; |
5c44784c | 14668 | } |
11cf8741 | 14669 | if (match == 0) |
a3f17187 | 14670 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14671 | } |
c906108c SS |
14672 | } |
14673 | } | |
14674 | ||
0d381245 VP |
14675 | static struct bp_location * |
14676 | find_location_by_number (char *number) | |
14677 | { | |
14678 | char *dot = strchr (number, '.'); | |
14679 | char *p1; | |
14680 | int bp_num; | |
14681 | int loc_num; | |
14682 | struct breakpoint *b; | |
14683 | struct bp_location *loc; | |
14684 | ||
14685 | *dot = '\0'; | |
14686 | ||
14687 | p1 = number; | |
197f0a60 | 14688 | bp_num = get_number (&p1); |
0d381245 VP |
14689 | if (bp_num == 0) |
14690 | error (_("Bad breakpoint number '%s'"), number); | |
14691 | ||
14692 | ALL_BREAKPOINTS (b) | |
14693 | if (b->number == bp_num) | |
14694 | { | |
14695 | break; | |
14696 | } | |
14697 | ||
14698 | if (!b || b->number != bp_num) | |
14699 | error (_("Bad breakpoint number '%s'"), number); | |
14700 | ||
14701 | p1 = dot+1; | |
197f0a60 | 14702 | loc_num = get_number (&p1); |
0d381245 VP |
14703 | if (loc_num == 0) |
14704 | error (_("Bad breakpoint location number '%s'"), number); | |
14705 | ||
14706 | --loc_num; | |
14707 | loc = b->loc; | |
14708 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14709 | ; | |
14710 | if (!loc) | |
14711 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14712 | ||
14713 | return loc; | |
14714 | } | |
14715 | ||
14716 | ||
1900040c MS |
14717 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14718 | If from_tty is nonzero, it prints a message to that effect, | |
14719 | which ends with a period (no newline). */ | |
14720 | ||
c906108c | 14721 | void |
fba45db2 | 14722 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14723 | { |
14724 | /* Never disable a watchpoint scope breakpoint; we want to | |
14725 | hit them when we leave scope so we can delete both the | |
14726 | watchpoint and its scope breakpoint at that time. */ | |
14727 | if (bpt->type == bp_watchpoint_scope) | |
14728 | return; | |
14729 | ||
c2c6d25f | 14730 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 14731 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
14732 | return; |
14733 | ||
b5de0fa7 | 14734 | bpt->enable_state = bp_disabled; |
c906108c | 14735 | |
b775012e LM |
14736 | /* Mark breakpoint locations modified. */ |
14737 | mark_breakpoint_modified (bpt); | |
14738 | ||
d248b706 KY |
14739 | if (target_supports_enable_disable_tracepoint () |
14740 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14741 | { | |
14742 | struct bp_location *location; | |
14743 | ||
14744 | for (location = bpt->loc; location; location = location->next) | |
14745 | target_disable_tracepoint (location); | |
14746 | } | |
14747 | ||
b60e7edf | 14748 | update_global_location_list (0); |
c906108c | 14749 | |
8d3788bd | 14750 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14751 | } |
14752 | ||
51be5b68 PA |
14753 | /* A callback for iterate_over_related_breakpoints. */ |
14754 | ||
14755 | static void | |
14756 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14757 | { | |
14758 | disable_breakpoint (b); | |
14759 | } | |
14760 | ||
95a42b64 TT |
14761 | /* A callback for map_breakpoint_numbers that calls |
14762 | disable_breakpoint. */ | |
14763 | ||
14764 | static void | |
14765 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14766 | { | |
51be5b68 | 14767 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14768 | } |
14769 | ||
c906108c | 14770 | static void |
fba45db2 | 14771 | disable_command (char *args, int from_tty) |
c906108c | 14772 | { |
c906108c | 14773 | if (args == 0) |
46c6471b PA |
14774 | { |
14775 | struct breakpoint *bpt; | |
14776 | ||
14777 | ALL_BREAKPOINTS (bpt) | |
14778 | if (user_breakpoint_p (bpt)) | |
14779 | disable_breakpoint (bpt); | |
14780 | } | |
9eaabc75 | 14781 | else |
0d381245 | 14782 | { |
9eaabc75 MW |
14783 | char *num = extract_arg (&args); |
14784 | ||
14785 | while (num) | |
d248b706 | 14786 | { |
9eaabc75 | 14787 | if (strchr (num, '.')) |
b775012e | 14788 | { |
9eaabc75 MW |
14789 | struct bp_location *loc = find_location_by_number (num); |
14790 | ||
14791 | if (loc) | |
14792 | { | |
14793 | if (loc->enabled) | |
14794 | { | |
14795 | loc->enabled = 0; | |
14796 | mark_breakpoint_location_modified (loc); | |
14797 | } | |
14798 | if (target_supports_enable_disable_tracepoint () | |
14799 | && current_trace_status ()->running && loc->owner | |
14800 | && is_tracepoint (loc->owner)) | |
14801 | target_disable_tracepoint (loc); | |
14802 | } | |
14803 | update_global_location_list (0); | |
b775012e | 14804 | } |
9eaabc75 MW |
14805 | else |
14806 | map_breakpoint_numbers (num, do_map_disable_breakpoint, NULL); | |
14807 | num = extract_arg (&args); | |
d248b706 | 14808 | } |
0d381245 | 14809 | } |
c906108c SS |
14810 | } |
14811 | ||
14812 | static void | |
816338b5 SS |
14813 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14814 | int count) | |
c906108c | 14815 | { |
afe38095 | 14816 | int target_resources_ok; |
c906108c SS |
14817 | |
14818 | if (bpt->type == bp_hardware_breakpoint) | |
14819 | { | |
14820 | int i; | |
c5aa993b | 14821 | i = hw_breakpoint_used_count (); |
53a5351d | 14822 | target_resources_ok = |
d92524f1 | 14823 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14824 | i + 1, 0); |
c906108c | 14825 | if (target_resources_ok == 0) |
8a3fe4f8 | 14826 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14827 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14828 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14829 | } |
14830 | ||
cc60f2e3 | 14831 | if (is_watchpoint (bpt)) |
c906108c | 14832 | { |
d07205c2 JK |
14833 | /* Initialize it just to avoid a GCC false warning. */ |
14834 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 14835 | volatile struct gdb_exception e; |
dde02812 ES |
14836 | |
14837 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 14838 | { |
3a5c3e22 PA |
14839 | struct watchpoint *w = (struct watchpoint *) bpt; |
14840 | ||
1e718ff1 TJB |
14841 | orig_enable_state = bpt->enable_state; |
14842 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14843 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14844 | } |
dde02812 | 14845 | if (e.reason < 0) |
c5aa993b | 14846 | { |
1e718ff1 | 14847 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14848 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14849 | bpt->number); | |
14850 | return; | |
c5aa993b | 14851 | } |
c906108c | 14852 | } |
0101ce28 | 14853 | |
b4c291bb KH |
14854 | if (bpt->enable_state != bp_permanent) |
14855 | bpt->enable_state = bp_enabled; | |
d248b706 | 14856 | |
b775012e LM |
14857 | bpt->enable_state = bp_enabled; |
14858 | ||
14859 | /* Mark breakpoint locations modified. */ | |
14860 | mark_breakpoint_modified (bpt); | |
14861 | ||
d248b706 KY |
14862 | if (target_supports_enable_disable_tracepoint () |
14863 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14864 | { | |
14865 | struct bp_location *location; | |
14866 | ||
14867 | for (location = bpt->loc; location; location = location->next) | |
14868 | target_enable_tracepoint (location); | |
14869 | } | |
14870 | ||
b4c291bb | 14871 | bpt->disposition = disposition; |
816338b5 | 14872 | bpt->enable_count = count; |
b60e7edf | 14873 | update_global_location_list (1); |
9c97429f | 14874 | |
8d3788bd | 14875 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14876 | } |
14877 | ||
fe3f5fa8 | 14878 | |
c906108c | 14879 | void |
fba45db2 | 14880 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14881 | { |
816338b5 | 14882 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14883 | } |
14884 | ||
14885 | static void | |
14886 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14887 | { | |
14888 | enable_breakpoint (bpt); | |
c906108c SS |
14889 | } |
14890 | ||
95a42b64 TT |
14891 | /* A callback for map_breakpoint_numbers that calls |
14892 | enable_breakpoint. */ | |
14893 | ||
14894 | static void | |
14895 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14896 | { | |
51be5b68 | 14897 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14898 | } |
14899 | ||
c906108c SS |
14900 | /* The enable command enables the specified breakpoints (or all defined |
14901 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14902 | in stopping the inferior. */ |
c906108c | 14903 | |
c906108c | 14904 | static void |
fba45db2 | 14905 | enable_command (char *args, int from_tty) |
c906108c | 14906 | { |
c906108c | 14907 | if (args == 0) |
46c6471b PA |
14908 | { |
14909 | struct breakpoint *bpt; | |
14910 | ||
14911 | ALL_BREAKPOINTS (bpt) | |
14912 | if (user_breakpoint_p (bpt)) | |
14913 | enable_breakpoint (bpt); | |
14914 | } | |
9eaabc75 | 14915 | else |
0d381245 | 14916 | { |
9eaabc75 MW |
14917 | char *num = extract_arg (&args); |
14918 | ||
14919 | while (num) | |
d248b706 | 14920 | { |
9eaabc75 | 14921 | if (strchr (num, '.')) |
b775012e | 14922 | { |
9eaabc75 MW |
14923 | struct bp_location *loc = find_location_by_number (num); |
14924 | ||
14925 | if (loc) | |
14926 | { | |
14927 | if (!loc->enabled) | |
14928 | { | |
14929 | loc->enabled = 1; | |
14930 | mark_breakpoint_location_modified (loc); | |
14931 | } | |
14932 | if (target_supports_enable_disable_tracepoint () | |
14933 | && current_trace_status ()->running && loc->owner | |
14934 | && is_tracepoint (loc->owner)) | |
14935 | target_enable_tracepoint (loc); | |
14936 | } | |
14937 | update_global_location_list (1); | |
b775012e | 14938 | } |
9eaabc75 MW |
14939 | else |
14940 | map_breakpoint_numbers (num, do_map_enable_breakpoint, NULL); | |
14941 | num = extract_arg (&args); | |
d248b706 | 14942 | } |
0d381245 | 14943 | } |
c906108c SS |
14944 | } |
14945 | ||
816338b5 SS |
14946 | /* This struct packages up disposition data for application to multiple |
14947 | breakpoints. */ | |
14948 | ||
14949 | struct disp_data | |
14950 | { | |
14951 | enum bpdisp disp; | |
14952 | int count; | |
14953 | }; | |
14954 | ||
c906108c | 14955 | static void |
51be5b68 PA |
14956 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14957 | { | |
816338b5 | 14958 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14959 | |
816338b5 | 14960 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14961 | } |
14962 | ||
14963 | static void | |
14964 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14965 | { |
816338b5 | 14966 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14967 | |
14968 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14969 | } |
14970 | ||
c906108c | 14971 | static void |
fba45db2 | 14972 | enable_once_command (char *args, int from_tty) |
c906108c | 14973 | { |
51be5b68 | 14974 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14975 | } |
14976 | ||
816338b5 SS |
14977 | static void |
14978 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14979 | { | |
14980 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14981 | ||
14982 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14983 | } | |
14984 | ||
14985 | static void | |
14986 | enable_count_command (char *args, int from_tty) | |
14987 | { | |
14988 | int count = get_number (&args); | |
14989 | ||
14990 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14991 | } | |
14992 | ||
c906108c | 14993 | static void |
51be5b68 | 14994 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14995 | { |
816338b5 | 14996 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14997 | |
14998 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14999 | } |
15000 | ||
c906108c | 15001 | static void |
fba45db2 | 15002 | enable_delete_command (char *args, int from_tty) |
c906108c | 15003 | { |
51be5b68 | 15004 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
15005 | } |
15006 | \f | |
fa8d40ab JJ |
15007 | static void |
15008 | set_breakpoint_cmd (char *args, int from_tty) | |
15009 | { | |
15010 | } | |
15011 | ||
15012 | static void | |
15013 | show_breakpoint_cmd (char *args, int from_tty) | |
15014 | { | |
15015 | } | |
15016 | ||
1f3b5d1b PP |
15017 | /* Invalidate last known value of any hardware watchpoint if |
15018 | the memory which that value represents has been written to by | |
15019 | GDB itself. */ | |
15020 | ||
15021 | static void | |
8de0566d YQ |
15022 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
15023 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
15024 | const bfd_byte *data) |
15025 | { | |
15026 | struct breakpoint *bp; | |
15027 | ||
15028 | ALL_BREAKPOINTS (bp) | |
15029 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 15030 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 15031 | { |
3a5c3e22 | 15032 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 15033 | |
3a5c3e22 PA |
15034 | if (wp->val_valid && wp->val) |
15035 | { | |
15036 | struct bp_location *loc; | |
15037 | ||
15038 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
15039 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
15040 | && loc->address + loc->length > addr | |
15041 | && addr + len > loc->address) | |
15042 | { | |
15043 | value_free (wp->val); | |
15044 | wp->val = NULL; | |
15045 | wp->val_valid = 0; | |
15046 | } | |
15047 | } | |
1f3b5d1b PP |
15048 | } |
15049 | } | |
15050 | ||
8181d85f DJ |
15051 | /* Create and insert a raw software breakpoint at PC. Return an |
15052 | identifier, which should be used to remove the breakpoint later. | |
15053 | In general, places which call this should be using something on the | |
15054 | breakpoint chain instead; this function should be eliminated | |
15055 | someday. */ | |
15056 | ||
15057 | void * | |
6c95b8df PA |
15058 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
15059 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
15060 | { |
15061 | struct bp_target_info *bp_tgt; | |
15062 | ||
41bf6aca | 15063 | bp_tgt = XCNEW (struct bp_target_info); |
8181d85f | 15064 | |
6c95b8df | 15065 | bp_tgt->placed_address_space = aspace; |
8181d85f | 15066 | bp_tgt->placed_address = pc; |
6c95b8df | 15067 | |
a6d9a66e | 15068 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
15069 | { |
15070 | /* Could not insert the breakpoint. */ | |
15071 | xfree (bp_tgt); | |
15072 | return NULL; | |
15073 | } | |
15074 | ||
15075 | return bp_tgt; | |
15076 | } | |
15077 | ||
4a64f543 MS |
15078 | /* Remove a breakpoint BP inserted by |
15079 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
15080 | |
15081 | int | |
a6d9a66e | 15082 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
15083 | { |
15084 | struct bp_target_info *bp_tgt = bp; | |
15085 | int ret; | |
15086 | ||
a6d9a66e | 15087 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
15088 | xfree (bp_tgt); |
15089 | ||
15090 | return ret; | |
15091 | } | |
15092 | ||
8181d85f DJ |
15093 | /* Create and insert a breakpoint for software single step. */ |
15094 | ||
15095 | void | |
6c95b8df | 15096 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
15097 | struct address_space *aspace, |
15098 | CORE_ADDR next_pc) | |
8181d85f DJ |
15099 | { |
15100 | void **bpt_p; | |
15101 | ||
15102 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
15103 | { |
15104 | bpt_p = &single_step_breakpoints[0]; | |
15105 | single_step_gdbarch[0] = gdbarch; | |
15106 | } | |
8181d85f DJ |
15107 | else |
15108 | { | |
15109 | gdb_assert (single_step_breakpoints[1] == NULL); | |
15110 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 15111 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
15112 | } |
15113 | ||
4a64f543 MS |
15114 | /* NOTE drow/2006-04-11: A future improvement to this function would |
15115 | be to only create the breakpoints once, and actually put them on | |
15116 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
15117 | We could adjust the addresses each time they were needed. Doing | |
15118 | this requires corresponding changes elsewhere where single step | |
15119 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 15120 | |
6c95b8df | 15121 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 15122 | if (*bpt_p == NULL) |
5af949e3 UW |
15123 | error (_("Could not insert single-step breakpoint at %s"), |
15124 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
15125 | } |
15126 | ||
f02253f1 HZ |
15127 | /* Check if the breakpoints used for software single stepping |
15128 | were inserted or not. */ | |
15129 | ||
15130 | int | |
15131 | single_step_breakpoints_inserted (void) | |
15132 | { | |
15133 | return (single_step_breakpoints[0] != NULL | |
15134 | || single_step_breakpoints[1] != NULL); | |
15135 | } | |
15136 | ||
8181d85f DJ |
15137 | /* Remove and delete any breakpoints used for software single step. */ |
15138 | ||
15139 | void | |
15140 | remove_single_step_breakpoints (void) | |
15141 | { | |
15142 | gdb_assert (single_step_breakpoints[0] != NULL); | |
15143 | ||
15144 | /* See insert_single_step_breakpoint for more about this deprecated | |
15145 | call. */ | |
a6d9a66e UW |
15146 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
15147 | single_step_breakpoints[0]); | |
15148 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
15149 | single_step_breakpoints[0] = NULL; |
15150 | ||
15151 | if (single_step_breakpoints[1] != NULL) | |
15152 | { | |
a6d9a66e UW |
15153 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
15154 | single_step_breakpoints[1]); | |
15155 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
15156 | single_step_breakpoints[1] = NULL; |
15157 | } | |
15158 | } | |
15159 | ||
d03285ec UW |
15160 | /* Delete software single step breakpoints without removing them from |
15161 | the inferior. This is intended to be used if the inferior's address | |
15162 | space where they were inserted is already gone, e.g. after exit or | |
15163 | exec. */ | |
15164 | ||
15165 | void | |
15166 | cancel_single_step_breakpoints (void) | |
15167 | { | |
15168 | int i; | |
15169 | ||
15170 | for (i = 0; i < 2; i++) | |
15171 | if (single_step_breakpoints[i]) | |
15172 | { | |
15173 | xfree (single_step_breakpoints[i]); | |
15174 | single_step_breakpoints[i] = NULL; | |
15175 | single_step_gdbarch[i] = NULL; | |
15176 | } | |
15177 | } | |
15178 | ||
15179 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
15180 | removing them. */ | |
15181 | ||
15182 | static void | |
15183 | detach_single_step_breakpoints (void) | |
15184 | { | |
15185 | int i; | |
15186 | ||
15187 | for (i = 0; i < 2; i++) | |
15188 | if (single_step_breakpoints[i]) | |
15189 | target_remove_breakpoint (single_step_gdbarch[i], | |
15190 | single_step_breakpoints[i]); | |
15191 | } | |
15192 | ||
4a64f543 MS |
15193 | /* Check whether a software single-step breakpoint is inserted at |
15194 | PC. */ | |
1aafd4da | 15195 | |
2adfaa28 | 15196 | int |
cc59ec59 MS |
15197 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
15198 | CORE_ADDR pc) | |
1aafd4da UW |
15199 | { |
15200 | int i; | |
15201 | ||
15202 | for (i = 0; i < 2; i++) | |
15203 | { | |
15204 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
15205 | if (bp_tgt |
15206 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
15207 | bp_tgt->placed_address, | |
15208 | aspace, pc)) | |
1aafd4da UW |
15209 | return 1; |
15210 | } | |
15211 | ||
15212 | return 0; | |
15213 | } | |
15214 | ||
a96d9b2e SDJ |
15215 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
15216 | non-zero otherwise. */ | |
15217 | static int | |
15218 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
15219 | { | |
15220 | if (syscall_catchpoint_p (bp) | |
15221 | && bp->enable_state != bp_disabled | |
15222 | && bp->enable_state != bp_call_disabled) | |
15223 | return 1; | |
15224 | else | |
15225 | return 0; | |
15226 | } | |
15227 | ||
15228 | int | |
15229 | catch_syscall_enabled (void) | |
15230 | { | |
fa3064dd YQ |
15231 | struct catch_syscall_inferior_data *inf_data |
15232 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 15233 | |
fa3064dd | 15234 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
15235 | } |
15236 | ||
15237 | int | |
15238 | catching_syscall_number (int syscall_number) | |
15239 | { | |
15240 | struct breakpoint *bp; | |
15241 | ||
15242 | ALL_BREAKPOINTS (bp) | |
15243 | if (is_syscall_catchpoint_enabled (bp)) | |
15244 | { | |
be5c67c1 PA |
15245 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
15246 | ||
15247 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
15248 | { |
15249 | int i, iter; | |
15250 | for (i = 0; | |
be5c67c1 | 15251 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
15252 | i++) |
15253 | if (syscall_number == iter) | |
15254 | return 1; | |
15255 | } | |
15256 | else | |
15257 | return 1; | |
15258 | } | |
15259 | ||
15260 | return 0; | |
15261 | } | |
15262 | ||
15263 | /* Complete syscall names. Used by "catch syscall". */ | |
49c4e619 | 15264 | static VEC (char_ptr) * |
a96d9b2e | 15265 | catch_syscall_completer (struct cmd_list_element *cmd, |
6f937416 | 15266 | const char *text, const char *word) |
a96d9b2e SDJ |
15267 | { |
15268 | const char **list = get_syscall_names (); | |
49c4e619 | 15269 | VEC (char_ptr) *retlist |
b45627a0 | 15270 | = (list == NULL) ? NULL : complete_on_enum (list, word, word); |
cc59ec59 | 15271 | |
c38eea1a MS |
15272 | xfree (list); |
15273 | return retlist; | |
a96d9b2e SDJ |
15274 | } |
15275 | ||
1042e4c0 SS |
15276 | /* Tracepoint-specific operations. */ |
15277 | ||
15278 | /* Set tracepoint count to NUM. */ | |
15279 | static void | |
15280 | set_tracepoint_count (int num) | |
15281 | { | |
15282 | tracepoint_count = num; | |
4fa62494 | 15283 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
15284 | } |
15285 | ||
70221824 | 15286 | static void |
1042e4c0 SS |
15287 | trace_command (char *arg, int from_tty) |
15288 | { | |
55aa24fb SDJ |
15289 | struct breakpoint_ops *ops; |
15290 | const char *arg_cp = arg; | |
15291 | ||
15292 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
15293 | ops = &tracepoint_probe_breakpoint_ops; | |
15294 | else | |
15295 | ops = &tracepoint_breakpoint_ops; | |
15296 | ||
558a9d82 YQ |
15297 | create_breakpoint (get_current_arch (), |
15298 | arg, | |
15299 | NULL, 0, NULL, 1 /* parse arg */, | |
15300 | 0 /* tempflag */, | |
15301 | bp_tracepoint /* type_wanted */, | |
15302 | 0 /* Ignore count */, | |
15303 | pending_break_support, | |
15304 | ops, | |
15305 | from_tty, | |
15306 | 1 /* enabled */, | |
15307 | 0 /* internal */, 0); | |
1042e4c0 SS |
15308 | } |
15309 | ||
70221824 | 15310 | static void |
7a697b8d SS |
15311 | ftrace_command (char *arg, int from_tty) |
15312 | { | |
558a9d82 YQ |
15313 | create_breakpoint (get_current_arch (), |
15314 | arg, | |
15315 | NULL, 0, NULL, 1 /* parse arg */, | |
15316 | 0 /* tempflag */, | |
15317 | bp_fast_tracepoint /* type_wanted */, | |
15318 | 0 /* Ignore count */, | |
15319 | pending_break_support, | |
15320 | &tracepoint_breakpoint_ops, | |
15321 | from_tty, | |
15322 | 1 /* enabled */, | |
15323 | 0 /* internal */, 0); | |
0fb4aa4b PA |
15324 | } |
15325 | ||
15326 | /* strace command implementation. Creates a static tracepoint. */ | |
15327 | ||
70221824 | 15328 | static void |
0fb4aa4b PA |
15329 | strace_command (char *arg, int from_tty) |
15330 | { | |
983af33b SDJ |
15331 | struct breakpoint_ops *ops; |
15332 | ||
15333 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15334 | or with a normal static tracepoint. */ | |
15335 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
15336 | ops = &strace_marker_breakpoint_ops; | |
15337 | else | |
15338 | ops = &tracepoint_breakpoint_ops; | |
15339 | ||
558a9d82 YQ |
15340 | create_breakpoint (get_current_arch (), |
15341 | arg, | |
15342 | NULL, 0, NULL, 1 /* parse arg */, | |
15343 | 0 /* tempflag */, | |
15344 | bp_static_tracepoint /* type_wanted */, | |
15345 | 0 /* Ignore count */, | |
15346 | pending_break_support, | |
15347 | ops, | |
15348 | from_tty, | |
15349 | 1 /* enabled */, | |
15350 | 0 /* internal */, 0); | |
7a697b8d SS |
15351 | } |
15352 | ||
409873ef SS |
15353 | /* Set up a fake reader function that gets command lines from a linked |
15354 | list that was acquired during tracepoint uploading. */ | |
15355 | ||
15356 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15357 | static int next_cmd; |
409873ef SS |
15358 | |
15359 | static char * | |
15360 | read_uploaded_action (void) | |
15361 | { | |
15362 | char *rslt; | |
15363 | ||
3149d8c1 | 15364 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15365 | |
3149d8c1 | 15366 | next_cmd++; |
409873ef SS |
15367 | |
15368 | return rslt; | |
15369 | } | |
15370 | ||
00bf0b85 SS |
15371 | /* Given information about a tracepoint as recorded on a target (which |
15372 | can be either a live system or a trace file), attempt to create an | |
15373 | equivalent GDB tracepoint. This is not a reliable process, since | |
15374 | the target does not necessarily have all the information used when | |
15375 | the tracepoint was originally defined. */ | |
15376 | ||
d9b3f62e | 15377 | struct tracepoint * |
00bf0b85 | 15378 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15379 | { |
409873ef | 15380 | char *addr_str, small_buf[100]; |
d9b3f62e | 15381 | struct tracepoint *tp; |
fd9b8c24 | 15382 | |
409873ef SS |
15383 | if (utp->at_string) |
15384 | addr_str = utp->at_string; | |
15385 | else | |
15386 | { | |
15387 | /* In the absence of a source location, fall back to raw | |
15388 | address. Since there is no way to confirm that the address | |
15389 | means the same thing as when the trace was started, warn the | |
15390 | user. */ | |
3e43a32a MS |
15391 | warning (_("Uploaded tracepoint %d has no " |
15392 | "source location, using raw address"), | |
409873ef | 15393 | utp->number); |
8c042590 | 15394 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
15395 | addr_str = small_buf; |
15396 | } | |
15397 | ||
15398 | /* There's not much we can do with a sequence of bytecodes. */ | |
15399 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15400 | warning (_("Uploaded tracepoint %d condition " |
15401 | "has no source form, ignoring it"), | |
409873ef | 15402 | utp->number); |
d5551862 | 15403 | |
8cdf0e15 | 15404 | if (!create_breakpoint (get_current_arch (), |
409873ef | 15405 | addr_str, |
e7e0cddf SS |
15406 | utp->cond_string, -1, NULL, |
15407 | 0 /* parse cond/thread */, | |
8cdf0e15 | 15408 | 0 /* tempflag */, |
0fb4aa4b | 15409 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15410 | 0 /* Ignore count */, |
15411 | pending_break_support, | |
348d480f | 15412 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15413 | 0 /* from_tty */, |
84f4c1fe | 15414 | utp->enabled /* enabled */, |
44f238bb PA |
15415 | 0 /* internal */, |
15416 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
15417 | return NULL; |
15418 | ||
409873ef | 15419 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15420 | tp = get_tracepoint (tracepoint_count); |
15421 | gdb_assert (tp != NULL); | |
d5551862 | 15422 | |
00bf0b85 SS |
15423 | if (utp->pass > 0) |
15424 | { | |
8c042590 PM |
15425 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15426 | tp->base.number); | |
00bf0b85 | 15427 | |
409873ef | 15428 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15429 | } |
15430 | ||
409873ef SS |
15431 | /* If we have uploaded versions of the original commands, set up a |
15432 | special-purpose "reader" function and call the usual command line | |
15433 | reader, then pass the result to the breakpoint command-setting | |
15434 | function. */ | |
3149d8c1 | 15435 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15436 | { |
409873ef | 15437 | struct command_line *cmd_list; |
00bf0b85 | 15438 | |
409873ef | 15439 | this_utp = utp; |
3149d8c1 | 15440 | next_cmd = 0; |
d5551862 | 15441 | |
409873ef SS |
15442 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15443 | ||
d9b3f62e | 15444 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15445 | } |
3149d8c1 SS |
15446 | else if (!VEC_empty (char_ptr, utp->actions) |
15447 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15448 | warning (_("Uploaded tracepoint %d actions " |
15449 | "have no source form, ignoring them"), | |
409873ef | 15450 | utp->number); |
00bf0b85 | 15451 | |
f196051f SS |
15452 | /* Copy any status information that might be available. */ |
15453 | tp->base.hit_count = utp->hit_count; | |
15454 | tp->traceframe_usage = utp->traceframe_usage; | |
15455 | ||
00bf0b85 | 15456 | return tp; |
d9b3f62e | 15457 | } |
00bf0b85 | 15458 | |
1042e4c0 SS |
15459 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15460 | omitted. */ | |
15461 | ||
15462 | static void | |
e5a67952 | 15463 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15464 | { |
79a45e25 | 15465 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15466 | int num_printed; |
1042e4c0 | 15467 | |
e5a67952 | 15468 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15469 | |
15470 | if (num_printed == 0) | |
1042e4c0 | 15471 | { |
e5a67952 | 15472 | if (args == NULL || *args == '\0') |
d77f58be SS |
15473 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15474 | else | |
e5a67952 | 15475 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15476 | } |
ad443146 SS |
15477 | |
15478 | default_collect_info (); | |
1042e4c0 SS |
15479 | } |
15480 | ||
4a64f543 | 15481 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15482 | Not supported by all targets. */ |
15483 | static void | |
15484 | enable_trace_command (char *args, int from_tty) | |
15485 | { | |
15486 | enable_command (args, from_tty); | |
15487 | } | |
15488 | ||
4a64f543 | 15489 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15490 | Not supported by all targets. */ |
15491 | static void | |
15492 | disable_trace_command (char *args, int from_tty) | |
15493 | { | |
15494 | disable_command (args, from_tty); | |
15495 | } | |
15496 | ||
4a64f543 | 15497 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15498 | static void |
15499 | delete_trace_command (char *arg, int from_tty) | |
15500 | { | |
35df4500 | 15501 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15502 | |
15503 | dont_repeat (); | |
15504 | ||
15505 | if (arg == 0) | |
15506 | { | |
15507 | int breaks_to_delete = 0; | |
15508 | ||
15509 | /* Delete all breakpoints if no argument. | |
15510 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15511 | have to be deleted with an explicit breakpoint number |
15512 | argument. */ | |
1042e4c0 | 15513 | ALL_TRACEPOINTS (b) |
46c6471b | 15514 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15515 | { |
15516 | breaks_to_delete = 1; | |
15517 | break; | |
15518 | } | |
1042e4c0 SS |
15519 | |
15520 | /* Ask user only if there are some breakpoints to delete. */ | |
15521 | if (!from_tty | |
15522 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15523 | { | |
35df4500 | 15524 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15525 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15526 | delete_breakpoint (b); |
1042e4c0 SS |
15527 | } |
15528 | } | |
15529 | else | |
51be5b68 | 15530 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15531 | } |
15532 | ||
197f0a60 TT |
15533 | /* Helper function for trace_pass_command. */ |
15534 | ||
15535 | static void | |
d9b3f62e | 15536 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15537 | { |
d9b3f62e | 15538 | tp->pass_count = count; |
6f6484cd | 15539 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15540 | if (from_tty) |
15541 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15542 | tp->base.number, count); |
197f0a60 TT |
15543 | } |
15544 | ||
1042e4c0 SS |
15545 | /* Set passcount for tracepoint. |
15546 | ||
15547 | First command argument is passcount, second is tracepoint number. | |
15548 | If tracepoint number omitted, apply to most recently defined. | |
15549 | Also accepts special argument "all". */ | |
15550 | ||
15551 | static void | |
15552 | trace_pass_command (char *args, int from_tty) | |
15553 | { | |
d9b3f62e | 15554 | struct tracepoint *t1; |
1042e4c0 | 15555 | unsigned int count; |
1042e4c0 SS |
15556 | |
15557 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15558 | error (_("passcount command requires an " |
15559 | "argument (count + optional TP num)")); | |
1042e4c0 | 15560 | |
4a64f543 | 15561 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15562 | |
529480d0 | 15563 | args = skip_spaces (args); |
1042e4c0 SS |
15564 | if (*args && strncasecmp (args, "all", 3) == 0) |
15565 | { | |
d9b3f62e PA |
15566 | struct breakpoint *b; |
15567 | ||
1042e4c0 | 15568 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15569 | if (*args) |
15570 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15571 | |
d9b3f62e | 15572 | ALL_TRACEPOINTS (b) |
197f0a60 | 15573 | { |
d9b3f62e | 15574 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15575 | trace_pass_set_count (t1, count, from_tty); |
15576 | } | |
15577 | } | |
15578 | else if (*args == '\0') | |
1042e4c0 | 15579 | { |
5fa1d40e | 15580 | t1 = get_tracepoint_by_number (&args, NULL); |
1042e4c0 | 15581 | if (t1) |
197f0a60 TT |
15582 | trace_pass_set_count (t1, count, from_tty); |
15583 | } | |
15584 | else | |
15585 | { | |
15586 | struct get_number_or_range_state state; | |
15587 | ||
15588 | init_number_or_range (&state, args); | |
15589 | while (!state.finished) | |
1042e4c0 | 15590 | { |
5fa1d40e | 15591 | t1 = get_tracepoint_by_number (&args, &state); |
197f0a60 TT |
15592 | if (t1) |
15593 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15594 | } |
15595 | } | |
1042e4c0 SS |
15596 | } |
15597 | ||
d9b3f62e | 15598 | struct tracepoint * |
1042e4c0 SS |
15599 | get_tracepoint (int num) |
15600 | { | |
15601 | struct breakpoint *t; | |
15602 | ||
15603 | ALL_TRACEPOINTS (t) | |
15604 | if (t->number == num) | |
d9b3f62e | 15605 | return (struct tracepoint *) t; |
1042e4c0 SS |
15606 | |
15607 | return NULL; | |
15608 | } | |
15609 | ||
d5551862 SS |
15610 | /* Find the tracepoint with the given target-side number (which may be |
15611 | different from the tracepoint number after disconnecting and | |
15612 | reconnecting). */ | |
15613 | ||
d9b3f62e | 15614 | struct tracepoint * |
d5551862 SS |
15615 | get_tracepoint_by_number_on_target (int num) |
15616 | { | |
d9b3f62e | 15617 | struct breakpoint *b; |
d5551862 | 15618 | |
d9b3f62e PA |
15619 | ALL_TRACEPOINTS (b) |
15620 | { | |
15621 | struct tracepoint *t = (struct tracepoint *) b; | |
15622 | ||
15623 | if (t->number_on_target == num) | |
15624 | return t; | |
15625 | } | |
d5551862 SS |
15626 | |
15627 | return NULL; | |
15628 | } | |
15629 | ||
1042e4c0 | 15630 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 | 15631 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
5fa1d40e YQ |
15632 | If the argument is missing, the most recent tracepoint |
15633 | (tracepoint_count) is returned. */ | |
15634 | ||
d9b3f62e | 15635 | struct tracepoint * |
197f0a60 | 15636 | get_tracepoint_by_number (char **arg, |
5fa1d40e | 15637 | struct get_number_or_range_state *state) |
1042e4c0 | 15638 | { |
1042e4c0 SS |
15639 | struct breakpoint *t; |
15640 | int tpnum; | |
15641 | char *instring = arg == NULL ? NULL : *arg; | |
15642 | ||
197f0a60 TT |
15643 | if (state) |
15644 | { | |
15645 | gdb_assert (!state->finished); | |
15646 | tpnum = get_number_or_range (state); | |
15647 | } | |
15648 | else if (arg == NULL || *arg == NULL || ! **arg) | |
5fa1d40e | 15649 | tpnum = tracepoint_count; |
1042e4c0 | 15650 | else |
197f0a60 | 15651 | tpnum = get_number (arg); |
1042e4c0 SS |
15652 | |
15653 | if (tpnum <= 0) | |
15654 | { | |
15655 | if (instring && *instring) | |
15656 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15657 | instring); | |
15658 | else | |
5fa1d40e | 15659 | printf_filtered (_("No previous tracepoint\n")); |
1042e4c0 SS |
15660 | return NULL; |
15661 | } | |
15662 | ||
15663 | ALL_TRACEPOINTS (t) | |
15664 | if (t->number == tpnum) | |
15665 | { | |
d9b3f62e | 15666 | return (struct tracepoint *) t; |
1042e4c0 SS |
15667 | } |
15668 | ||
1042e4c0 SS |
15669 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15670 | return NULL; | |
15671 | } | |
15672 | ||
d9b3f62e PA |
15673 | void |
15674 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15675 | { | |
15676 | if (b->thread != -1) | |
15677 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15678 | ||
15679 | if (b->task != 0) | |
15680 | fprintf_unfiltered (fp, " task %d", b->task); | |
15681 | ||
15682 | fprintf_unfiltered (fp, "\n"); | |
15683 | } | |
15684 | ||
6149aea9 PA |
15685 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15686 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15687 | on each breakpoint and only include the ones for which it returns | |
15688 | non-zero. */ | |
15689 | ||
1042e4c0 | 15690 | static void |
6149aea9 PA |
15691 | save_breakpoints (char *filename, int from_tty, |
15692 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15693 | { |
15694 | struct breakpoint *tp; | |
6149aea9 | 15695 | int any = 0; |
1042e4c0 | 15696 | struct cleanup *cleanup; |
a7bdde9e | 15697 | struct ui_file *fp; |
6149aea9 | 15698 | int extra_trace_bits = 0; |
1042e4c0 | 15699 | |
6149aea9 PA |
15700 | if (filename == 0 || *filename == 0) |
15701 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15702 | |
15703 | /* See if we have anything to save. */ | |
6149aea9 | 15704 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15705 | { |
6149aea9 | 15706 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15707 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15708 | continue; |
15709 | ||
15710 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15711 | if (filter && !filter (tp)) | |
15712 | continue; | |
15713 | ||
15714 | any = 1; | |
15715 | ||
15716 | if (is_tracepoint (tp)) | |
15717 | { | |
15718 | extra_trace_bits = 1; | |
15719 | ||
15720 | /* We can stop searching. */ | |
15721 | break; | |
15722 | } | |
1042e4c0 | 15723 | } |
6149aea9 PA |
15724 | |
15725 | if (!any) | |
1042e4c0 | 15726 | { |
6149aea9 | 15727 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15728 | return; |
15729 | } | |
15730 | ||
c718be47 PA |
15731 | filename = tilde_expand (filename); |
15732 | cleanup = make_cleanup (xfree, filename); | |
15733 | fp = gdb_fopen (filename, "w"); | |
059fb39f | 15734 | if (!fp) |
6149aea9 PA |
15735 | error (_("Unable to open file '%s' for saving (%s)"), |
15736 | filename, safe_strerror (errno)); | |
a7bdde9e | 15737 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15738 | |
6149aea9 PA |
15739 | if (extra_trace_bits) |
15740 | save_trace_state_variables (fp); | |
8bf6485c | 15741 | |
6149aea9 | 15742 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15743 | { |
6149aea9 | 15744 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15745 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15746 | continue; |
8bf6485c | 15747 | |
6149aea9 PA |
15748 | /* If we have a filter, only save the breakpoints it accepts. */ |
15749 | if (filter && !filter (tp)) | |
15750 | continue; | |
15751 | ||
348d480f | 15752 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15753 | |
6149aea9 PA |
15754 | /* Note, we can't rely on tp->number for anything, as we can't |
15755 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15756 | instead. */ | |
15757 | ||
15758 | if (tp->cond_string) | |
15759 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15760 | ||
15761 | if (tp->ignore_count) | |
15762 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15763 | ||
2d9442cc | 15764 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15765 | { |
a7bdde9e VP |
15766 | volatile struct gdb_exception ex; |
15767 | ||
6149aea9 | 15768 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15769 | |
79a45e25 | 15770 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 15771 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 15772 | { |
79a45e25 | 15773 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15774 | } |
79a45e25 | 15775 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 15776 | |
a7bdde9e VP |
15777 | if (ex.reason < 0) |
15778 | throw_exception (ex); | |
1042e4c0 | 15779 | |
a7bdde9e | 15780 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15781 | } |
6149aea9 PA |
15782 | |
15783 | if (tp->enable_state == bp_disabled) | |
15784 | fprintf_unfiltered (fp, "disable\n"); | |
15785 | ||
15786 | /* If this is a multi-location breakpoint, check if the locations | |
15787 | should be individually disabled. Watchpoint locations are | |
15788 | special, and not user visible. */ | |
15789 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15790 | { | |
15791 | struct bp_location *loc; | |
15792 | int n = 1; | |
15793 | ||
15794 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15795 | if (!loc->enabled) | |
15796 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15797 | } | |
1042e4c0 | 15798 | } |
8bf6485c | 15799 | |
6149aea9 | 15800 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15801 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15802 | ||
1042e4c0 | 15803 | if (from_tty) |
6149aea9 | 15804 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
c718be47 | 15805 | do_cleanups (cleanup); |
6149aea9 PA |
15806 | } |
15807 | ||
15808 | /* The `save breakpoints' command. */ | |
15809 | ||
15810 | static void | |
15811 | save_breakpoints_command (char *args, int from_tty) | |
15812 | { | |
15813 | save_breakpoints (args, from_tty, NULL); | |
15814 | } | |
15815 | ||
15816 | /* The `save tracepoints' command. */ | |
15817 | ||
15818 | static void | |
15819 | save_tracepoints_command (char *args, int from_tty) | |
15820 | { | |
15821 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15822 | } |
15823 | ||
15824 | /* Create a vector of all tracepoints. */ | |
15825 | ||
15826 | VEC(breakpoint_p) * | |
eeae04df | 15827 | all_tracepoints (void) |
1042e4c0 SS |
15828 | { |
15829 | VEC(breakpoint_p) *tp_vec = 0; | |
15830 | struct breakpoint *tp; | |
15831 | ||
15832 | ALL_TRACEPOINTS (tp) | |
15833 | { | |
15834 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15835 | } | |
15836 | ||
15837 | return tp_vec; | |
15838 | } | |
15839 | ||
c906108c | 15840 | \f |
4a64f543 MS |
15841 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15842 | commands. It is defined as a macro to prevent duplication. | |
15843 | COMMAND should be a string constant containing the name of the | |
15844 | command. */ | |
31e2b00f | 15845 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15846 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15847 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15848 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
15849 | guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\ | |
31e2b00f AS |
15850 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15851 | If a line number is specified, break at start of code for that line.\n\ | |
15852 | If a function is specified, break at start of code for that function.\n\ | |
15853 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15854 | With no LOCATION, uses current execution address of the selected\n\ |
15855 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15856 | \n\ |
15857 | THREADNUM is the number from \"info threads\".\n\ | |
15858 | CONDITION is a boolean expression.\n\ | |
15859 | \n\ | |
d41c0fc8 PA |
15860 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15861 | conditions are different.\n\ | |
31e2b00f AS |
15862 | \n\ |
15863 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15864 | ||
44feb3ce TT |
15865 | /* List of subcommands for "catch". */ |
15866 | static struct cmd_list_element *catch_cmdlist; | |
15867 | ||
15868 | /* List of subcommands for "tcatch". */ | |
15869 | static struct cmd_list_element *tcatch_cmdlist; | |
15870 | ||
9ac4176b | 15871 | void |
44feb3ce TT |
15872 | add_catch_command (char *name, char *docstring, |
15873 | void (*sfunc) (char *args, int from_tty, | |
15874 | struct cmd_list_element *command), | |
625e8578 | 15875 | completer_ftype *completer, |
44feb3ce TT |
15876 | void *user_data_catch, |
15877 | void *user_data_tcatch) | |
15878 | { | |
15879 | struct cmd_list_element *command; | |
15880 | ||
15881 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15882 | &catch_cmdlist); | |
15883 | set_cmd_sfunc (command, sfunc); | |
15884 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15885 | set_cmd_completer (command, completer); |
44feb3ce TT |
15886 | |
15887 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15888 | &tcatch_cmdlist); | |
15889 | set_cmd_sfunc (command, sfunc); | |
15890 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15891 | set_cmd_completer (command, completer); |
44feb3ce TT |
15892 | } |
15893 | ||
6c95b8df | 15894 | static void |
a79b8f6e | 15895 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 15896 | { |
fa3064dd YQ |
15897 | struct catch_syscall_inferior_data *inf_data |
15898 | = get_catch_syscall_inferior_data (inf); | |
15899 | ||
15900 | inf_data->total_syscalls_count = 0; | |
15901 | inf_data->any_syscall_count = 0; | |
15902 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
15903 | } |
15904 | ||
6149aea9 PA |
15905 | static void |
15906 | save_command (char *arg, int from_tty) | |
15907 | { | |
3e43a32a MS |
15908 | printf_unfiltered (_("\"save\" must be followed by " |
15909 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
15910 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
15911 | } | |
15912 | ||
84f4c1fe PM |
15913 | struct breakpoint * |
15914 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15915 | void *data) | |
15916 | { | |
35df4500 | 15917 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15918 | |
35df4500 | 15919 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15920 | { |
15921 | if ((*callback) (b, data)) | |
15922 | return b; | |
15923 | } | |
15924 | ||
15925 | return NULL; | |
15926 | } | |
15927 | ||
0574c78f GB |
15928 | /* Zero if any of the breakpoint's locations could be a location where |
15929 | functions have been inlined, nonzero otherwise. */ | |
15930 | ||
15931 | static int | |
15932 | is_non_inline_function (struct breakpoint *b) | |
15933 | { | |
15934 | /* The shared library event breakpoint is set on the address of a | |
15935 | non-inline function. */ | |
15936 | if (b->type == bp_shlib_event) | |
15937 | return 1; | |
15938 | ||
15939 | return 0; | |
15940 | } | |
15941 | ||
15942 | /* Nonzero if the specified PC cannot be a location where functions | |
15943 | have been inlined. */ | |
15944 | ||
15945 | int | |
09ac7c10 TT |
15946 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15947 | const struct target_waitstatus *ws) | |
0574c78f GB |
15948 | { |
15949 | struct breakpoint *b; | |
15950 | struct bp_location *bl; | |
15951 | ||
15952 | ALL_BREAKPOINTS (b) | |
15953 | { | |
15954 | if (!is_non_inline_function (b)) | |
15955 | continue; | |
15956 | ||
15957 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15958 | { | |
15959 | if (!bl->shlib_disabled | |
09ac7c10 | 15960 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15961 | return 1; |
15962 | } | |
15963 | } | |
15964 | ||
15965 | return 0; | |
15966 | } | |
15967 | ||
2f202fde JK |
15968 | /* Remove any references to OBJFILE which is going to be freed. */ |
15969 | ||
15970 | void | |
15971 | breakpoint_free_objfile (struct objfile *objfile) | |
15972 | { | |
15973 | struct bp_location **locp, *loc; | |
15974 | ||
15975 | ALL_BP_LOCATIONS (loc, locp) | |
15976 | if (loc->symtab != NULL && loc->symtab->objfile == objfile) | |
15977 | loc->symtab = NULL; | |
15978 | } | |
15979 | ||
2060206e PA |
15980 | void |
15981 | initialize_breakpoint_ops (void) | |
15982 | { | |
15983 | static int initialized = 0; | |
15984 | ||
15985 | struct breakpoint_ops *ops; | |
15986 | ||
15987 | if (initialized) | |
15988 | return; | |
15989 | initialized = 1; | |
15990 | ||
15991 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15992 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15993 | internal and momentary breakpoints, etc.). */ | |
15994 | ops = &bkpt_base_breakpoint_ops; | |
15995 | *ops = base_breakpoint_ops; | |
15996 | ops->re_set = bkpt_re_set; | |
15997 | ops->insert_location = bkpt_insert_location; | |
15998 | ops->remove_location = bkpt_remove_location; | |
15999 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
16000 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
16001 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
16002 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
16003 | |
16004 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
16005 | ops = &bkpt_breakpoint_ops; | |
16006 | *ops = bkpt_base_breakpoint_ops; | |
16007 | ops->re_set = bkpt_re_set; | |
16008 | ops->resources_needed = bkpt_resources_needed; | |
16009 | ops->print_it = bkpt_print_it; | |
16010 | ops->print_mention = bkpt_print_mention; | |
16011 | ops->print_recreate = bkpt_print_recreate; | |
16012 | ||
16013 | /* Ranged breakpoints. */ | |
16014 | ops = &ranged_breakpoint_ops; | |
16015 | *ops = bkpt_breakpoint_ops; | |
16016 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
16017 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
16018 | ops->print_it = print_it_ranged_breakpoint; | |
16019 | ops->print_one = print_one_ranged_breakpoint; | |
16020 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
16021 | ops->print_mention = print_mention_ranged_breakpoint; | |
16022 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
16023 | ||
16024 | /* Internal breakpoints. */ | |
16025 | ops = &internal_breakpoint_ops; | |
16026 | *ops = bkpt_base_breakpoint_ops; | |
16027 | ops->re_set = internal_bkpt_re_set; | |
16028 | ops->check_status = internal_bkpt_check_status; | |
16029 | ops->print_it = internal_bkpt_print_it; | |
16030 | ops->print_mention = internal_bkpt_print_mention; | |
16031 | ||
16032 | /* Momentary breakpoints. */ | |
16033 | ops = &momentary_breakpoint_ops; | |
16034 | *ops = bkpt_base_breakpoint_ops; | |
16035 | ops->re_set = momentary_bkpt_re_set; | |
16036 | ops->check_status = momentary_bkpt_check_status; | |
16037 | ops->print_it = momentary_bkpt_print_it; | |
16038 | ops->print_mention = momentary_bkpt_print_mention; | |
16039 | ||
e2e4d78b JK |
16040 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
16041 | ops = &longjmp_breakpoint_ops; | |
16042 | *ops = momentary_breakpoint_ops; | |
16043 | ops->dtor = longjmp_bkpt_dtor; | |
16044 | ||
55aa24fb SDJ |
16045 | /* Probe breakpoints. */ |
16046 | ops = &bkpt_probe_breakpoint_ops; | |
16047 | *ops = bkpt_breakpoint_ops; | |
16048 | ops->insert_location = bkpt_probe_insert_location; | |
16049 | ops->remove_location = bkpt_probe_remove_location; | |
16050 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
16051 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
16052 | ||
2060206e PA |
16053 | /* Watchpoints. */ |
16054 | ops = &watchpoint_breakpoint_ops; | |
16055 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 16056 | ops->dtor = dtor_watchpoint; |
2060206e PA |
16057 | ops->re_set = re_set_watchpoint; |
16058 | ops->insert_location = insert_watchpoint; | |
16059 | ops->remove_location = remove_watchpoint; | |
16060 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
16061 | ops->check_status = check_status_watchpoint; | |
16062 | ops->resources_needed = resources_needed_watchpoint; | |
16063 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
16064 | ops->print_it = print_it_watchpoint; | |
16065 | ops->print_mention = print_mention_watchpoint; | |
16066 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 16067 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
16068 | |
16069 | /* Masked watchpoints. */ | |
16070 | ops = &masked_watchpoint_breakpoint_ops; | |
16071 | *ops = watchpoint_breakpoint_ops; | |
16072 | ops->insert_location = insert_masked_watchpoint; | |
16073 | ops->remove_location = remove_masked_watchpoint; | |
16074 | ops->resources_needed = resources_needed_masked_watchpoint; | |
16075 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
16076 | ops->print_it = print_it_masked_watchpoint; | |
16077 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
16078 | ops->print_mention = print_mention_masked_watchpoint; | |
16079 | ops->print_recreate = print_recreate_masked_watchpoint; | |
16080 | ||
16081 | /* Tracepoints. */ | |
16082 | ops = &tracepoint_breakpoint_ops; | |
16083 | *ops = base_breakpoint_ops; | |
16084 | ops->re_set = tracepoint_re_set; | |
16085 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
16086 | ops->print_one_detail = tracepoint_print_one_detail; | |
16087 | ops->print_mention = tracepoint_print_mention; | |
16088 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
16089 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
16090 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
16091 | ops->decode_linespec = tracepoint_decode_linespec; | |
16092 | ||
55aa24fb SDJ |
16093 | /* Probe tracepoints. */ |
16094 | ops = &tracepoint_probe_breakpoint_ops; | |
16095 | *ops = tracepoint_breakpoint_ops; | |
16096 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
16097 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
16098 | ||
983af33b SDJ |
16099 | /* Static tracepoints with marker (`-m'). */ |
16100 | ops = &strace_marker_breakpoint_ops; | |
16101 | *ops = tracepoint_breakpoint_ops; | |
16102 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
16103 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
16104 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
16105 | |
16106 | /* Fork catchpoints. */ | |
16107 | ops = &catch_fork_breakpoint_ops; | |
16108 | *ops = base_breakpoint_ops; | |
16109 | ops->insert_location = insert_catch_fork; | |
16110 | ops->remove_location = remove_catch_fork; | |
16111 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
16112 | ops->print_it = print_it_catch_fork; | |
16113 | ops->print_one = print_one_catch_fork; | |
16114 | ops->print_mention = print_mention_catch_fork; | |
16115 | ops->print_recreate = print_recreate_catch_fork; | |
16116 | ||
16117 | /* Vfork catchpoints. */ | |
16118 | ops = &catch_vfork_breakpoint_ops; | |
16119 | *ops = base_breakpoint_ops; | |
16120 | ops->insert_location = insert_catch_vfork; | |
16121 | ops->remove_location = remove_catch_vfork; | |
16122 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
16123 | ops->print_it = print_it_catch_vfork; | |
16124 | ops->print_one = print_one_catch_vfork; | |
16125 | ops->print_mention = print_mention_catch_vfork; | |
16126 | ops->print_recreate = print_recreate_catch_vfork; | |
16127 | ||
16128 | /* Exec catchpoints. */ | |
16129 | ops = &catch_exec_breakpoint_ops; | |
16130 | *ops = base_breakpoint_ops; | |
16131 | ops->dtor = dtor_catch_exec; | |
16132 | ops->insert_location = insert_catch_exec; | |
16133 | ops->remove_location = remove_catch_exec; | |
16134 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
16135 | ops->print_it = print_it_catch_exec; | |
16136 | ops->print_one = print_one_catch_exec; | |
16137 | ops->print_mention = print_mention_catch_exec; | |
16138 | ops->print_recreate = print_recreate_catch_exec; | |
16139 | ||
16140 | /* Syscall catchpoints. */ | |
16141 | ops = &catch_syscall_breakpoint_ops; | |
16142 | *ops = base_breakpoint_ops; | |
16143 | ops->dtor = dtor_catch_syscall; | |
16144 | ops->insert_location = insert_catch_syscall; | |
16145 | ops->remove_location = remove_catch_syscall; | |
16146 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
16147 | ops->print_it = print_it_catch_syscall; | |
16148 | ops->print_one = print_one_catch_syscall; | |
16149 | ops->print_mention = print_mention_catch_syscall; | |
16150 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
16151 | |
16152 | /* Solib-related catchpoints. */ | |
16153 | ops = &catch_solib_breakpoint_ops; | |
16154 | *ops = base_breakpoint_ops; | |
16155 | ops->dtor = dtor_catch_solib; | |
16156 | ops->insert_location = insert_catch_solib; | |
16157 | ops->remove_location = remove_catch_solib; | |
16158 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
16159 | ops->check_status = check_status_catch_solib; | |
16160 | ops->print_it = print_it_catch_solib; | |
16161 | ops->print_one = print_one_catch_solib; | |
16162 | ops->print_mention = print_mention_catch_solib; | |
16163 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
16164 | |
16165 | ops = &dprintf_breakpoint_ops; | |
16166 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 16167 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
16168 | ops->resources_needed = bkpt_resources_needed; |
16169 | ops->print_it = bkpt_print_it; | |
16170 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 16171 | ops->print_recreate = dprintf_print_recreate; |
9d6e6e84 | 16172 | ops->after_condition_true = dprintf_after_condition_true; |
2060206e PA |
16173 | } |
16174 | ||
8bfd80db YQ |
16175 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
16176 | ||
16177 | static struct cmd_list_element *enablebreaklist = NULL; | |
16178 | ||
c906108c | 16179 | void |
fba45db2 | 16180 | _initialize_breakpoint (void) |
c906108c SS |
16181 | { |
16182 | struct cmd_list_element *c; | |
16183 | ||
2060206e PA |
16184 | initialize_breakpoint_ops (); |
16185 | ||
84acb35a | 16186 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
63644780 | 16187 | observer_attach_free_objfile (disable_breakpoints_in_freed_objfile); |
6c95b8df | 16188 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 16189 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 16190 | |
55aa24fb SDJ |
16191 | breakpoint_objfile_key |
16192 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 16193 | |
fa3064dd | 16194 | catch_syscall_inferior_data |
8e260fc0 TT |
16195 | = register_inferior_data_with_cleanup (NULL, |
16196 | catch_syscall_inferior_data_cleanup); | |
fa3064dd | 16197 | |
c906108c SS |
16198 | breakpoint_chain = 0; |
16199 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
16200 | before a breakpoint is set. */ | |
16201 | breakpoint_count = 0; | |
16202 | ||
1042e4c0 SS |
16203 | tracepoint_count = 0; |
16204 | ||
1bedd215 AC |
16205 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
16206 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
16207 | Usage is `ignore N COUNT'.")); | |
c906108c | 16208 | if (xdb_commands) |
c5aa993b | 16209 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 16210 | |
1bedd215 AC |
16211 | add_com ("commands", class_breakpoint, commands_command, _("\ |
16212 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
16213 | Give breakpoint number as argument after \"commands\".\n\ |
16214 | With no argument, the targeted breakpoint is the last one set.\n\ | |
16215 | The commands themselves follow starting on the next line.\n\ | |
16216 | Type a line containing \"end\" to indicate the end of them.\n\ | |
16217 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 16218 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 16219 | |
d55637df | 16220 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 16221 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 16222 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 16223 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 16224 | set_cmd_completer (c, condition_completer); |
c906108c | 16225 | |
1bedd215 | 16226 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 16227 | Set a temporary breakpoint.\n\ |
c906108c SS |
16228 | Like \"break\" except the breakpoint is only temporary,\n\ |
16229 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
16230 | by using \"enable delete\" on the breakpoint number.\n\ |
16231 | \n" | |
16232 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 16233 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16234 | |
1bedd215 | 16235 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 16236 | Set a hardware assisted breakpoint.\n\ |
c906108c | 16237 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
16238 | some target hardware may not have this support.\n\ |
16239 | \n" | |
16240 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 16241 | set_cmd_completer (c, location_completer); |
c906108c | 16242 | |
1bedd215 | 16243 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 16244 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 16245 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
16246 | so it will be deleted when hit.\n\ |
16247 | \n" | |
16248 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 16249 | set_cmd_completer (c, location_completer); |
c906108c | 16250 | |
1bedd215 AC |
16251 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
16252 | Enable some breakpoints.\n\ | |
c906108c SS |
16253 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16254 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
16255 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16256 | With a subcommand you can enable temporarily."), |
c906108c SS |
16257 | &enablelist, "enable ", 1, &cmdlist); |
16258 | if (xdb_commands) | |
1bedd215 AC |
16259 | add_com ("ab", class_breakpoint, enable_command, _("\ |
16260 | Enable some breakpoints.\n\ | |
c906108c SS |
16261 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16262 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
16263 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16264 | With a subcommand you can enable temporarily.")); |
c906108c SS |
16265 | |
16266 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
16267 | ||
84951ab5 | 16268 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 16269 | Enable some breakpoints.\n\ |
c906108c SS |
16270 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
16271 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 16272 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 16273 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 16274 | |
1a966eab AC |
16275 | add_cmd ("once", no_class, enable_once_command, _("\ |
16276 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16277 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
16278 | &enablebreaklist); |
16279 | ||
1a966eab AC |
16280 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16281 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16282 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16283 | &enablebreaklist); |
16284 | ||
816338b5 SS |
16285 | add_cmd ("count", no_class, enable_count_command, _("\ |
16286 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16287 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16288 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
16289 | &enablebreaklist); | |
16290 | ||
1a966eab AC |
16291 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
16292 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
16293 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
16294 | &enablelist); |
16295 | ||
1a966eab AC |
16296 | add_cmd ("once", no_class, enable_once_command, _("\ |
16297 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
16298 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
16299 | &enablelist); |
16300 | ||
16301 | add_cmd ("count", no_class, enable_count_command, _("\ | |
16302 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16303 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16304 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
16305 | &enablelist); |
16306 | ||
1bedd215 AC |
16307 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
16308 | Disable some breakpoints.\n\ | |
c906108c SS |
16309 | Arguments are breakpoint numbers with spaces in between.\n\ |
16310 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16311 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16312 | &disablelist, "disable ", 1, &cmdlist); |
16313 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16314 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
16315 | if (xdb_commands) | |
1bedd215 AC |
16316 | add_com ("sb", class_breakpoint, disable_command, _("\ |
16317 | Disable some breakpoints.\n\ | |
c906108c SS |
16318 | Arguments are breakpoint numbers with spaces in between.\n\ |
16319 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16320 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 16321 | |
1a966eab AC |
16322 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16323 | Disable some breakpoints.\n\ | |
c906108c SS |
16324 | Arguments are breakpoint numbers with spaces in between.\n\ |
16325 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16326 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16327 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16328 | &disablelist); |
16329 | ||
1bedd215 AC |
16330 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16331 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16332 | Arguments are breakpoint numbers with spaces in between.\n\ |
16333 | To delete all breakpoints, give no argument.\n\ | |
16334 | \n\ | |
16335 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16336 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16337 | &deletelist, "delete ", 1, &cmdlist); |
16338 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16339 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16340 | if (xdb_commands) |
1bedd215 AC |
16341 | add_com ("db", class_breakpoint, delete_command, _("\ |
16342 | Delete some breakpoints.\n\ | |
c906108c | 16343 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 16344 | To delete all breakpoints, give no argument.\n")); |
c906108c | 16345 | |
1a966eab AC |
16346 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16347 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16348 | Arguments are breakpoint numbers with spaces in between.\n\ |
16349 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16350 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16351 | &deletelist); |
16352 | ||
1bedd215 AC |
16353 | add_com ("clear", class_breakpoint, clear_command, _("\ |
16354 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
16355 | Argument may be line number, function name, or \"*\" and an address.\n\ |
16356 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
16357 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
16358 | If an address is specified, breakpoints at that address are cleared.\n\ |
16359 | \n\ | |
16360 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
16361 | is executing in.\n\ |
16362 | \n\ | |
1bedd215 | 16363 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16364 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16365 | |
1bedd215 | 16366 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
16367 | Set breakpoint at specified line or function.\n" |
16368 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 16369 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16370 | |
c906108c SS |
16371 | add_com_alias ("b", "break", class_run, 1); |
16372 | add_com_alias ("br", "break", class_run, 1); | |
16373 | add_com_alias ("bre", "break", class_run, 1); | |
16374 | add_com_alias ("brea", "break", class_run, 1); | |
16375 | ||
7681d515 PM |
16376 | if (xdb_commands) |
16377 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
16378 | |
16379 | if (dbx_commands) | |
16380 | { | |
1bedd215 AC |
16381 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16382 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16383 | &stoplist, "stop ", 1, &cmdlist); |
16384 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16385 | _("Break in function or address."), &stoplist); |
c5aa993b | 16386 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16387 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16388 | add_com ("status", class_info, breakpoints_info, _("\ |
16389 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16390 | The \"Type\" column indicates one of:\n\ |
16391 | \tbreakpoint - normal breakpoint\n\ | |
16392 | \twatchpoint - watchpoint\n\ | |
16393 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16394 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16395 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16396 | address and file/line number respectively.\n\ |
16397 | \n\ | |
16398 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16399 | are set to the address of the last breakpoint listed unless the command\n\ |
16400 | is prefixed with \"server \".\n\n\ | |
c906108c | 16401 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16402 | breakpoint set.")); |
c906108c SS |
16403 | } |
16404 | ||
1bedd215 | 16405 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16406 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16407 | The \"Type\" column indicates one of:\n\ |
16408 | \tbreakpoint - normal breakpoint\n\ | |
16409 | \twatchpoint - watchpoint\n\ | |
16410 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16411 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16412 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16413 | address and file/line number respectively.\n\ |
16414 | \n\ | |
16415 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16416 | are set to the address of the last breakpoint listed unless the command\n\ |
16417 | is prefixed with \"server \".\n\n\ | |
c906108c | 16418 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16419 | breakpoint set.")); |
c906108c | 16420 | |
6b04bdb7 MS |
16421 | add_info_alias ("b", "breakpoints", 1); |
16422 | ||
c906108c | 16423 | if (xdb_commands) |
1bedd215 AC |
16424 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
16425 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16426 | The \"Type\" column indicates one of:\n\ |
16427 | \tbreakpoint - normal breakpoint\n\ | |
16428 | \twatchpoint - watchpoint\n\ | |
16429 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16430 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16431 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16432 | address and file/line number respectively.\n\ |
16433 | \n\ | |
16434 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16435 | are set to the address of the last breakpoint listed unless the command\n\ |
16436 | is prefixed with \"server \".\n\n\ | |
c906108c | 16437 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16438 | breakpoint set.")); |
c906108c | 16439 | |
1a966eab AC |
16440 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16441 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16442 | The \"Type\" column indicates one of:\n\ |
16443 | \tbreakpoint - normal breakpoint\n\ | |
16444 | \twatchpoint - watchpoint\n\ | |
16445 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16446 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16447 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16448 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16449 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16450 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16451 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16452 | address and file/line number respectively.\n\ |
16453 | \n\ | |
16454 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16455 | are set to the address of the last breakpoint listed unless the command\n\ |
16456 | is prefixed with \"server \".\n\n\ | |
c906108c | 16457 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16458 | breakpoint set."), |
c906108c SS |
16459 | &maintenanceinfolist); |
16460 | ||
44feb3ce TT |
16461 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16462 | Set catchpoints to catch events."), | |
16463 | &catch_cmdlist, "catch ", | |
16464 | 0/*allow-unknown*/, &cmdlist); | |
16465 | ||
16466 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16467 | Set temporary catchpoints to catch events."), | |
16468 | &tcatch_cmdlist, "tcatch ", | |
16469 | 0/*allow-unknown*/, &cmdlist); | |
16470 | ||
44feb3ce TT |
16471 | add_catch_command ("fork", _("Catch calls to fork."), |
16472 | catch_fork_command_1, | |
a96d9b2e | 16473 | NULL, |
44feb3ce TT |
16474 | (void *) (uintptr_t) catch_fork_permanent, |
16475 | (void *) (uintptr_t) catch_fork_temporary); | |
16476 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16477 | catch_fork_command_1, | |
a96d9b2e | 16478 | NULL, |
44feb3ce TT |
16479 | (void *) (uintptr_t) catch_vfork_permanent, |
16480 | (void *) (uintptr_t) catch_vfork_temporary); | |
16481 | add_catch_command ("exec", _("Catch calls to exec."), | |
16482 | catch_exec_command_1, | |
a96d9b2e SDJ |
16483 | NULL, |
16484 | CATCH_PERMANENT, | |
16485 | CATCH_TEMPORARY); | |
edcc5120 TT |
16486 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16487 | Usage: catch load [REGEX]\n\ | |
16488 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16489 | catch_load_command_1, | |
16490 | NULL, | |
16491 | CATCH_PERMANENT, | |
16492 | CATCH_TEMPORARY); | |
16493 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16494 | Usage: catch unload [REGEX]\n\ | |
16495 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16496 | catch_unload_command_1, | |
16497 | NULL, | |
16498 | CATCH_PERMANENT, | |
16499 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
16500 | add_catch_command ("syscall", _("\ |
16501 | Catch system calls by their names and/or numbers.\n\ | |
16502 | Arguments say which system calls to catch. If no arguments\n\ | |
16503 | are given, every system call will be caught.\n\ | |
16504 | Arguments, if given, should be one or more system call names\n\ | |
16505 | (if your system supports that), or system call numbers."), | |
16506 | catch_syscall_command_1, | |
16507 | catch_syscall_completer, | |
44feb3ce TT |
16508 | CATCH_PERMANENT, |
16509 | CATCH_TEMPORARY); | |
c5aa993b | 16510 | |
1bedd215 AC |
16511 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16512 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16513 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16514 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16515 | an expression changes.\n\ |
16516 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16517 | the memory to which it refers.")); | |
65d12d83 | 16518 | set_cmd_completer (c, expression_completer); |
c906108c | 16519 | |
1bedd215 AC |
16520 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16521 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16522 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16523 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16524 | an expression is read.\n\ |
16525 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16526 | the memory to which it refers.")); | |
65d12d83 | 16527 | set_cmd_completer (c, expression_completer); |
c906108c | 16528 | |
1bedd215 AC |
16529 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16530 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16531 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16532 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16533 | an expression is either read or written.\n\ |
16534 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16535 | the memory to which it refers.")); | |
65d12d83 | 16536 | set_cmd_completer (c, expression_completer); |
c906108c | 16537 | |
d77f58be | 16538 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16539 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16540 | |
920d2a44 AC |
16541 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16542 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16543 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16544 | &can_use_hw_watchpoints, _("\ | |
16545 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16546 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16547 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16548 | such is available. (However, any hardware watchpoints that were\n\ | |
16549 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16550 | hardware.)"), |
16551 | NULL, | |
920d2a44 | 16552 | show_can_use_hw_watchpoints, |
85c07804 | 16553 | &setlist, &showlist); |
c906108c SS |
16554 | |
16555 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16556 | |
1042e4c0 SS |
16557 | /* Tracepoint manipulation commands. */ |
16558 | ||
16559 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16560 | Set a tracepoint at specified line or function.\n\ | |
16561 | \n" | |
16562 | BREAK_ARGS_HELP ("trace") "\n\ | |
16563 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16564 | set_cmd_completer (c, location_completer); | |
16565 | ||
16566 | add_com_alias ("tp", "trace", class_alias, 0); | |
16567 | add_com_alias ("tr", "trace", class_alias, 1); | |
16568 | add_com_alias ("tra", "trace", class_alias, 1); | |
16569 | add_com_alias ("trac", "trace", class_alias, 1); | |
16570 | ||
7a697b8d SS |
16571 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16572 | Set a fast tracepoint at specified line or function.\n\ | |
16573 | \n" | |
16574 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16575 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16576 | set_cmd_completer (c, location_completer); | |
16577 | ||
0fb4aa4b PA |
16578 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16579 | Set a static tracepoint at specified line, function or marker.\n\ | |
16580 | \n\ | |
16581 | strace [LOCATION] [if CONDITION]\n\ | |
16582 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16583 | or -m MARKER_ID.\n\ | |
16584 | If a line number is specified, probe the marker at start of code\n\ | |
16585 | for that line. If a function is specified, probe the marker at start\n\ | |
16586 | of code for that function. If an address is specified, probe the marker\n\ | |
16587 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16588 | with that name. With no LOCATION, uses current execution address of\n\ | |
16589 | the selected stack frame.\n\ | |
16590 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16591 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16592 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16593 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16594 | \n\ | |
16595 | CONDITION is a boolean expression.\n\ | |
16596 | \n\ | |
d41c0fc8 PA |
16597 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16598 | conditions are different.\n\ | |
0fb4aa4b PA |
16599 | \n\ |
16600 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16601 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16602 | set_cmd_completer (c, location_completer); | |
16603 | ||
1042e4c0 | 16604 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16605 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16606 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16607 | last tracepoint set.")); | |
16608 | ||
16609 | add_info_alias ("tp", "tracepoints", 1); | |
16610 | ||
16611 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16612 | Delete specified tracepoints.\n\ | |
16613 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16614 | No argument means delete all tracepoints."), | |
16615 | &deletelist); | |
7e20dfcd | 16616 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16617 | |
16618 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16619 | Disable specified tracepoints.\n\ | |
16620 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16621 | No argument means disable all tracepoints."), | |
16622 | &disablelist); | |
16623 | deprecate_cmd (c, "disable"); | |
16624 | ||
16625 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16626 | Enable specified tracepoints.\n\ | |
16627 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16628 | No argument means enable all tracepoints."), | |
16629 | &enablelist); | |
16630 | deprecate_cmd (c, "enable"); | |
16631 | ||
16632 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16633 | Set the passcount for a tracepoint.\n\ | |
16634 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16635 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16636 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16637 | ||
6149aea9 PA |
16638 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16639 | _("Save breakpoint definitions as a script."), | |
16640 | &save_cmdlist, "save ", | |
16641 | 0/*allow-unknown*/, &cmdlist); | |
16642 | ||
16643 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16644 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16645 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16646 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16647 | session to restore them."), | |
16648 | &save_cmdlist); | |
16649 | set_cmd_completer (c, filename_completer); | |
16650 | ||
16651 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16652 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16653 | Use the 'source' command in another debug session to restore them."), |
16654 | &save_cmdlist); | |
1042e4c0 SS |
16655 | set_cmd_completer (c, filename_completer); |
16656 | ||
6149aea9 PA |
16657 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16658 | deprecate_cmd (c, "save tracepoints"); | |
16659 | ||
1bedd215 | 16660 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16661 | Breakpoint specific settings\n\ |
16662 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16663 | pending breakpoint behavior"), |
fa8d40ab JJ |
16664 | &breakpoint_set_cmdlist, "set breakpoint ", |
16665 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16666 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16667 | Breakpoint specific settings\n\ |
16668 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16669 | pending breakpoint behavior"), |
fa8d40ab JJ |
16670 | &breakpoint_show_cmdlist, "show breakpoint ", |
16671 | 0/*allow-unknown*/, &showlist); | |
16672 | ||
7915a72c AC |
16673 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16674 | &pending_break_support, _("\ | |
16675 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16676 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16677 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16678 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16679 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16680 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16681 | NULL, |
920d2a44 | 16682 | show_pending_break_support, |
6e1d7d6c AC |
16683 | &breakpoint_set_cmdlist, |
16684 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16685 | |
16686 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16687 | |
16688 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16689 | &automatic_hardware_breakpoints, _("\ | |
16690 | Set automatic usage of hardware breakpoints."), _("\ | |
16691 | Show automatic usage of hardware breakpoints."), _("\ | |
16692 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16693 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16694 | a warning will be emitted for such breakpoints."), | |
16695 | NULL, | |
16696 | show_automatic_hardware_breakpoints, | |
16697 | &breakpoint_set_cmdlist, | |
16698 | &breakpoint_show_cmdlist); | |
74960c60 | 16699 | |
72d0e2c5 YQ |
16700 | add_setshow_auto_boolean_cmd ("always-inserted", class_support, |
16701 | &always_inserted_mode, _("\ | |
74960c60 VP |
16702 | Set mode for inserting breakpoints."), _("\ |
16703 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
16704 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
16705 | resumed, and removed when execution stops. When this mode is on,\n\ | |
16706 | breakpoints are inserted immediately and removed only when the user\n\ | |
16707 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
16708 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
16709 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
16710 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
16711 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
72d0e2c5 YQ |
16712 | NULL, |
16713 | &show_always_inserted_mode, | |
16714 | &breakpoint_set_cmdlist, | |
16715 | &breakpoint_show_cmdlist); | |
f1310107 | 16716 | |
b775012e LM |
16717 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16718 | condition_evaluation_enums, | |
16719 | &condition_evaluation_mode_1, _("\ | |
16720 | Set mode of breakpoint condition evaluation."), _("\ | |
16721 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16722 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16723 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16724 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16725 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16726 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16727 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16728 | be set to \"gdb\""), | |
16729 | &set_condition_evaluation_mode, | |
16730 | &show_condition_evaluation_mode, | |
16731 | &breakpoint_set_cmdlist, | |
16732 | &breakpoint_show_cmdlist); | |
16733 | ||
f1310107 TJB |
16734 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16735 | Set a breakpoint for an address range.\n\ | |
16736 | break-range START-LOCATION, END-LOCATION\n\ | |
16737 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16738 | LINENUM, for that line in the current file,\n\ | |
16739 | FILE:LINENUM, for that line in that file,\n\ | |
16740 | +OFFSET, for that number of lines after the current line\n\ | |
16741 | or the start of the range\n\ | |
16742 | FUNCTION, for the first line in that function,\n\ | |
16743 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16744 | *ADDRESS, for the instruction at that address.\n\ | |
16745 | \n\ | |
16746 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16747 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16748 | range (including START-LOCATION and END-LOCATION).")); | |
16749 | ||
e7e0cddf SS |
16750 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16751 | Set a dynamic printf at specified line or function.\n\ | |
16752 | dprintf location,format string,arg1,arg2,...\n\ | |
16753 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16754 | If a line number is specified, break at start of code for that line.\n\ | |
0e4777df | 16755 | If a function is specified, break at start of code for that function.")); |
e7e0cddf SS |
16756 | set_cmd_completer (c, location_completer); |
16757 | ||
16758 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16759 | dprintf_style_enums, &dprintf_style, _("\ | |
16760 | Set the style of usage for dynamic printf."), _("\ | |
16761 | Show the style of usage for dynamic printf."), _("\ | |
16762 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16763 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16764 | console, as with the \"printf\" command.\n\ | |
16765 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16766 | program; by default printf(), but you can choose a different function or\n\ | |
16767 | output stream by setting dprintf-function and dprintf-channel."), | |
16768 | update_dprintf_commands, NULL, | |
16769 | &setlist, &showlist); | |
16770 | ||
16771 | dprintf_function = xstrdup ("printf"); | |
16772 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16773 | &dprintf_function, _("\ | |
16774 | Set the function to use for dynamic printf"), _("\ | |
16775 | Show the function to use for dynamic printf"), NULL, | |
16776 | update_dprintf_commands, NULL, | |
16777 | &setlist, &showlist); | |
16778 | ||
16779 | dprintf_channel = xstrdup (""); | |
16780 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16781 | &dprintf_channel, _("\ | |
16782 | Set the channel to use for dynamic printf"), _("\ | |
16783 | Show the channel to use for dynamic printf"), NULL, | |
16784 | update_dprintf_commands, NULL, | |
16785 | &setlist, &showlist); | |
16786 | ||
d3ce09f5 SS |
16787 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16788 | &disconnected_dprintf, _("\ | |
16789 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16790 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16791 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16792 | even if GDB disconnects or detaches from the target."), | |
16793 | NULL, | |
16794 | NULL, | |
16795 | &setlist, &showlist); | |
16796 | ||
16797 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16798 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16799 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16800 | ||
765dc015 | 16801 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16802 | |
16803 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
49fa26b0 | 16804 | observer_attach_thread_exit (remove_threaded_breakpoints); |
c906108c | 16805 | } |