Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
0b302171 | 3 | Copyright (C) 1986-2012 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
a6d9a66e | 21 | #include "arch-utils.h" |
c906108c | 22 | #include <ctype.h> |
776592bf | 23 | #include "hashtab.h" |
c906108c SS |
24 | #include "symtab.h" |
25 | #include "frame.h" | |
26 | #include "breakpoint.h" | |
1042e4c0 | 27 | #include "tracepoint.h" |
c906108c SS |
28 | #include "gdbtypes.h" |
29 | #include "expression.h" | |
30 | #include "gdbcore.h" | |
31 | #include "gdbcmd.h" | |
32 | #include "value.h" | |
33 | #include "command.h" | |
34 | #include "inferior.h" | |
35 | #include "gdbthread.h" | |
36 | #include "target.h" | |
37 | #include "language.h" | |
38 | #include "gdb_string.h" | |
50f182aa | 39 | #include "gdb-demangle.h" |
0ba1096a | 40 | #include "filenames.h" |
c906108c SS |
41 | #include "annotate.h" |
42 | #include "symfile.h" | |
43 | #include "objfiles.h" | |
0378c332 | 44 | #include "source.h" |
c5f0f3d0 | 45 | #include "linespec.h" |
c94fdfd0 | 46 | #include "completer.h" |
5b7f31a4 | 47 | #include "gdb.h" |
8b93c638 | 48 | #include "ui-out.h" |
e1507482 | 49 | #include "cli/cli-script.h" |
0225421b | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
a77053c2 | 52 | #include "solib.h" |
84acb35a JJ |
53 | #include "solist.h" |
54 | #include "observer.h" | |
60250e8b | 55 | #include "exceptions.h" |
765dc015 | 56 | #include "memattr.h" |
f7f9143b | 57 | #include "ada-lang.h" |
d1aa2f50 | 58 | #include "top.h" |
79a45b7d | 59 | #include "valprint.h" |
4efc6507 | 60 | #include "jit.h" |
a96d9b2e | 61 | #include "xml-syscall.h" |
65d79d4b | 62 | #include "parser-defs.h" |
55aa24fb SDJ |
63 | #include "gdb_regex.h" |
64 | #include "probe.h" | |
e9cafbcc | 65 | #include "cli/cli-utils.h" |
be34f849 | 66 | #include "continuations.h" |
1bfeeb0f JL |
67 | #include "stack.h" |
68 | #include "skip.h" | |
edcc5120 | 69 | #include "gdb_regex.h" |
b775012e | 70 | #include "ax-gdb.h" |
e2e4d78b | 71 | #include "dummy-frame.h" |
c906108c | 72 | |
d3ce09f5 SS |
73 | #include "format.h" |
74 | ||
1042e4c0 SS |
75 | /* readline include files */ |
76 | #include "readline/readline.h" | |
77 | #include "readline/history.h" | |
78 | ||
79 | /* readline defines this. */ | |
80 | #undef savestring | |
81 | ||
034dad6f | 82 | #include "mi/mi-common.h" |
7371cf6d | 83 | #include "python/python.h" |
104c1213 | 84 | |
4a64f543 | 85 | /* Prototypes for local functions. */ |
c906108c | 86 | |
a14ed312 | 87 | static void enable_delete_command (char *, int); |
c906108c | 88 | |
a14ed312 | 89 | static void enable_once_command (char *, int); |
c906108c | 90 | |
816338b5 SS |
91 | static void enable_count_command (char *, int); |
92 | ||
a14ed312 | 93 | static void disable_command (char *, int); |
c906108c | 94 | |
a14ed312 | 95 | static void enable_command (char *, int); |
c906108c | 96 | |
95a42b64 TT |
97 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
98 | void *), | |
99 | void *); | |
c906108c | 100 | |
a14ed312 | 101 | static void ignore_command (char *, int); |
c906108c | 102 | |
4efb68b1 | 103 | static int breakpoint_re_set_one (void *); |
c906108c | 104 | |
348d480f PA |
105 | static void breakpoint_re_set_default (struct breakpoint *); |
106 | ||
983af33b SDJ |
107 | static void create_sals_from_address_default (char **, |
108 | struct linespec_result *, | |
109 | enum bptype, char *, | |
110 | char **); | |
111 | ||
112 | static void create_breakpoints_sal_default (struct gdbarch *, | |
113 | struct linespec_result *, | |
114 | struct linespec_sals *, | |
e7e0cddf | 115 | char *, char *, enum bptype, |
983af33b SDJ |
116 | enum bpdisp, int, int, |
117 | int, | |
118 | const struct breakpoint_ops *, | |
44f238bb | 119 | int, int, int, unsigned); |
983af33b SDJ |
120 | |
121 | static void decode_linespec_default (struct breakpoint *, char **, | |
122 | struct symtabs_and_lines *); | |
123 | ||
a14ed312 | 124 | static void clear_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void catch_command (char *, int); |
c906108c | 127 | |
a9634178 | 128 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 129 | |
98deb0da | 130 | static void break_command_1 (char *, int, int); |
c906108c | 131 | |
a14ed312 | 132 | static void mention (struct breakpoint *); |
c906108c | 133 | |
348d480f PA |
134 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
135 | enum bptype, | |
c0a91b2b | 136 | const struct breakpoint_ops *); |
3742cc8b YQ |
137 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
138 | const struct symtab_and_line *); | |
139 | ||
4a64f543 MS |
140 | /* This function is used in gdbtk sources and thus can not be made |
141 | static. */ | |
63c252f8 | 142 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 143 | struct symtab_and_line, |
c0a91b2b TT |
144 | enum bptype, |
145 | const struct breakpoint_ops *); | |
c906108c | 146 | |
06edf0c0 PA |
147 | static struct breakpoint * |
148 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
149 | enum bptype type, | |
c0a91b2b | 150 | const struct breakpoint_ops *ops); |
06edf0c0 | 151 | |
76897487 KB |
152 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
153 | ||
a6d9a66e UW |
154 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
155 | CORE_ADDR bpaddr, | |
88f7da05 | 156 | enum bptype bptype); |
76897487 | 157 | |
6c95b8df PA |
158 | static void describe_other_breakpoints (struct gdbarch *, |
159 | struct program_space *, CORE_ADDR, | |
5af949e3 | 160 | struct obj_section *, int); |
c906108c | 161 | |
6c95b8df PA |
162 | static int breakpoint_address_match (struct address_space *aspace1, |
163 | CORE_ADDR addr1, | |
164 | struct address_space *aspace2, | |
165 | CORE_ADDR addr2); | |
166 | ||
85d721b8 PA |
167 | static int watchpoint_locations_match (struct bp_location *loc1, |
168 | struct bp_location *loc2); | |
169 | ||
f1310107 TJB |
170 | static int breakpoint_location_address_match (struct bp_location *bl, |
171 | struct address_space *aspace, | |
172 | CORE_ADDR addr); | |
173 | ||
a14ed312 | 174 | static void breakpoints_info (char *, int); |
c906108c | 175 | |
d77f58be SS |
176 | static void watchpoints_info (char *, int); |
177 | ||
e5a67952 MS |
178 | static int breakpoint_1 (char *, int, |
179 | int (*) (const struct breakpoint *)); | |
c906108c | 180 | |
4efb68b1 | 181 | static int breakpoint_cond_eval (void *); |
c906108c | 182 | |
4efb68b1 | 183 | static void cleanup_executing_breakpoints (void *); |
c906108c | 184 | |
a14ed312 | 185 | static void commands_command (char *, int); |
c906108c | 186 | |
a14ed312 | 187 | static void condition_command (char *, int); |
c906108c | 188 | |
c5aa993b JM |
189 | typedef enum |
190 | { | |
191 | mark_inserted, | |
192 | mark_uninserted | |
193 | } | |
194 | insertion_state_t; | |
c906108c | 195 | |
0bde7532 | 196 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 197 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 198 | |
e514a9d6 | 199 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 200 | |
4efb68b1 | 201 | static int watchpoint_check (void *); |
c906108c | 202 | |
a14ed312 | 203 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 204 | |
a14ed312 | 205 | static int hw_breakpoint_used_count (void); |
c906108c | 206 | |
a1398e0c PA |
207 | static int hw_watchpoint_use_count (struct breakpoint *); |
208 | ||
209 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
210 | enum bptype type, | |
211 | int *other_type_used); | |
c906108c | 212 | |
a14ed312 | 213 | static void hbreak_command (char *, int); |
c906108c | 214 | |
a14ed312 | 215 | static void thbreak_command (char *, int); |
c906108c | 216 | |
816338b5 SS |
217 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
218 | int count); | |
c906108c | 219 | |
a14ed312 | 220 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 221 | |
a14ed312 | 222 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 223 | |
a14ed312 | 224 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 225 | |
a14ed312 | 226 | static char *ep_parse_optional_if_clause (char **arg); |
7a292a7a | 227 | |
d85310f7 MS |
228 | static void catch_exception_command_1 (enum exception_event_kind ex_event, |
229 | char *arg, int tempflag, int from_tty); | |
7a292a7a | 230 | |
a14ed312 | 231 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 232 | |
d03285ec UW |
233 | static void detach_single_step_breakpoints (void); |
234 | ||
6c95b8df PA |
235 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
236 | CORE_ADDR pc); | |
1aafd4da | 237 | |
fe3f5fa8 | 238 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
239 | static void incref_bp_location (struct bp_location *loc); |
240 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 241 | |
39d61571 | 242 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 243 | |
b60e7edf | 244 | static void update_global_location_list (int); |
a5606eee | 245 | |
b60e7edf | 246 | static void update_global_location_list_nothrow (int); |
74960c60 | 247 | |
d77f58be | 248 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
249 | |
250 | static void insert_breakpoint_locations (void); | |
a5606eee | 251 | |
a96d9b2e SDJ |
252 | static int syscall_catchpoint_p (struct breakpoint *b); |
253 | ||
1042e4c0 SS |
254 | static void tracepoints_info (char *, int); |
255 | ||
256 | static void delete_trace_command (char *, int); | |
257 | ||
258 | static void enable_trace_command (char *, int); | |
259 | ||
260 | static void disable_trace_command (char *, int); | |
261 | ||
262 | static void trace_pass_command (char *, int); | |
263 | ||
9c06b0b4 TJB |
264 | static int is_masked_watchpoint (const struct breakpoint *b); |
265 | ||
b775012e LM |
266 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
267 | ||
983af33b SDJ |
268 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
269 | otherwise. */ | |
270 | ||
271 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 272 | |
edcc5120 TT |
273 | static void init_catchpoint (struct breakpoint *b, |
274 | struct gdbarch *gdbarch, int tempflag, | |
275 | char *cond_string, | |
276 | const struct breakpoint_ops *ops); | |
277 | ||
2060206e PA |
278 | /* The abstract base class all breakpoint_ops structures inherit |
279 | from. */ | |
280 | static struct breakpoint_ops base_breakpoint_ops; | |
281 | ||
282 | /* The breakpoint_ops structure to be inherited by all breakpoint_ops | |
283 | that are implemented on top of software or hardware breakpoints | |
284 | (user breakpoints, internal and momentary breakpoints, etc.). */ | |
285 | static struct breakpoint_ops bkpt_base_breakpoint_ops; | |
286 | ||
287 | /* Internal breakpoints class type. */ | |
06edf0c0 | 288 | static struct breakpoint_ops internal_breakpoint_ops; |
2060206e PA |
289 | |
290 | /* Momentary breakpoints class type. */ | |
06edf0c0 PA |
291 | static struct breakpoint_ops momentary_breakpoint_ops; |
292 | ||
e2e4d78b JK |
293 | /* Momentary breakpoints for bp_longjmp and bp_exception class type. */ |
294 | static struct breakpoint_ops longjmp_breakpoint_ops; | |
295 | ||
2060206e PA |
296 | /* The breakpoint_ops structure to be used in regular user created |
297 | breakpoints. */ | |
298 | struct breakpoint_ops bkpt_breakpoint_ops; | |
299 | ||
55aa24fb SDJ |
300 | /* Breakpoints set on probes. */ |
301 | static struct breakpoint_ops bkpt_probe_breakpoint_ops; | |
302 | ||
e7e0cddf SS |
303 | /* Dynamic printf class type. */ |
304 | static struct breakpoint_ops dprintf_breakpoint_ops; | |
305 | ||
d3ce09f5 SS |
306 | /* The style in which to perform a dynamic printf. This is a user |
307 | option because different output options have different tradeoffs; | |
308 | if GDB does the printing, there is better error handling if there | |
309 | is a problem with any of the arguments, but using an inferior | |
310 | function lets you have special-purpose printers and sending of | |
311 | output to the same place as compiled-in print functions. */ | |
312 | ||
313 | static const char dprintf_style_gdb[] = "gdb"; | |
314 | static const char dprintf_style_call[] = "call"; | |
315 | static const char dprintf_style_agent[] = "agent"; | |
316 | static const char *const dprintf_style_enums[] = { | |
317 | dprintf_style_gdb, | |
318 | dprintf_style_call, | |
319 | dprintf_style_agent, | |
320 | NULL | |
321 | }; | |
322 | static const char *dprintf_style = dprintf_style_gdb; | |
323 | ||
324 | /* The function to use for dynamic printf if the preferred style is to | |
325 | call into the inferior. The value is simply a string that is | |
326 | copied into the command, so it can be anything that GDB can | |
327 | evaluate to a callable address, not necessarily a function name. */ | |
328 | ||
329 | static char *dprintf_function = ""; | |
330 | ||
331 | /* The channel to use for dynamic printf if the preferred style is to | |
332 | call into the inferior; if a nonempty string, it will be passed to | |
333 | the call as the first argument, with the format string as the | |
334 | second. As with the dprintf function, this can be anything that | |
335 | GDB knows how to evaluate, so in addition to common choices like | |
336 | "stderr", this could be an app-specific expression like | |
337 | "mystreams[curlogger]". */ | |
338 | ||
339 | static char *dprintf_channel = ""; | |
340 | ||
341 | /* True if dprintf commands should continue to operate even if GDB | |
342 | has disconnected. */ | |
343 | static int disconnected_dprintf = 1; | |
344 | ||
5cea2a26 PA |
345 | /* A reference-counted struct command_line. This lets multiple |
346 | breakpoints share a single command list. */ | |
347 | struct counted_command_line | |
348 | { | |
349 | /* The reference count. */ | |
350 | int refc; | |
351 | ||
352 | /* The command list. */ | |
353 | struct command_line *commands; | |
354 | }; | |
355 | ||
356 | struct command_line * | |
357 | breakpoint_commands (struct breakpoint *b) | |
358 | { | |
359 | return b->commands ? b->commands->commands : NULL; | |
360 | } | |
3daf8fe5 | 361 | |
f3b1572e PA |
362 | /* Flag indicating that a command has proceeded the inferior past the |
363 | current breakpoint. */ | |
364 | ||
365 | static int breakpoint_proceeded; | |
366 | ||
956a9fb9 | 367 | const char * |
2cec12e5 AR |
368 | bpdisp_text (enum bpdisp disp) |
369 | { | |
4a64f543 MS |
370 | /* NOTE: the following values are a part of MI protocol and |
371 | represent values of 'disp' field returned when inferior stops at | |
372 | a breakpoint. */ | |
bc043ef3 | 373 | static const char * const bpdisps[] = {"del", "dstp", "dis", "keep"}; |
cc59ec59 | 374 | |
2cec12e5 AR |
375 | return bpdisps[(int) disp]; |
376 | } | |
c906108c | 377 | |
4a64f543 | 378 | /* Prototypes for exported functions. */ |
c906108c | 379 | /* If FALSE, gdb will not use hardware support for watchpoints, even |
4a64f543 | 380 | if such is available. */ |
c906108c SS |
381 | static int can_use_hw_watchpoints; |
382 | ||
920d2a44 AC |
383 | static void |
384 | show_can_use_hw_watchpoints (struct ui_file *file, int from_tty, | |
385 | struct cmd_list_element *c, | |
386 | const char *value) | |
387 | { | |
3e43a32a MS |
388 | fprintf_filtered (file, |
389 | _("Debugger's willingness to use " | |
390 | "watchpoint hardware is %s.\n"), | |
920d2a44 AC |
391 | value); |
392 | } | |
393 | ||
fa8d40ab JJ |
394 | /* If AUTO_BOOLEAN_FALSE, gdb will not attempt to create pending breakpoints. |
395 | If AUTO_BOOLEAN_TRUE, gdb will automatically create pending breakpoints | |
4a64f543 | 396 | for unrecognized breakpoint locations. |
fa8d40ab JJ |
397 | If AUTO_BOOLEAN_AUTO, gdb will query when breakpoints are unrecognized. */ |
398 | static enum auto_boolean pending_break_support; | |
920d2a44 AC |
399 | static void |
400 | show_pending_break_support (struct ui_file *file, int from_tty, | |
401 | struct cmd_list_element *c, | |
402 | const char *value) | |
403 | { | |
3e43a32a MS |
404 | fprintf_filtered (file, |
405 | _("Debugger's behavior regarding " | |
406 | "pending breakpoints is %s.\n"), | |
920d2a44 AC |
407 | value); |
408 | } | |
fa8d40ab | 409 | |
765dc015 | 410 | /* If 1, gdb will automatically use hardware breakpoints for breakpoints |
4a64f543 | 411 | set with "break" but falling in read-only memory. |
765dc015 VP |
412 | If 0, gdb will warn about such breakpoints, but won't automatically |
413 | use hardware breakpoints. */ | |
414 | static int automatic_hardware_breakpoints; | |
415 | static void | |
416 | show_automatic_hardware_breakpoints (struct ui_file *file, int from_tty, | |
417 | struct cmd_list_element *c, | |
418 | const char *value) | |
419 | { | |
3e43a32a MS |
420 | fprintf_filtered (file, |
421 | _("Automatic usage of hardware breakpoints is %s.\n"), | |
765dc015 VP |
422 | value); |
423 | } | |
424 | ||
33e5cbd6 PA |
425 | /* If on, gdb will keep breakpoints inserted even as inferior is |
426 | stopped, and immediately insert any new breakpoints. If off, gdb | |
427 | will insert breakpoints into inferior only when resuming it, and | |
428 | will remove breakpoints upon stop. If auto, GDB will behave as ON | |
429 | if in non-stop mode, and as OFF if all-stop mode.*/ | |
430 | ||
72d0e2c5 YQ |
431 | static enum auto_boolean always_inserted_mode = AUTO_BOOLEAN_AUTO; |
432 | ||
33e5cbd6 | 433 | static void |
74960c60 | 434 | show_always_inserted_mode (struct ui_file *file, int from_tty, |
33e5cbd6 | 435 | struct cmd_list_element *c, const char *value) |
74960c60 | 436 | { |
72d0e2c5 | 437 | if (always_inserted_mode == AUTO_BOOLEAN_AUTO) |
3e43a32a MS |
438 | fprintf_filtered (file, |
439 | _("Always inserted breakpoint " | |
440 | "mode is %s (currently %s).\n"), | |
33e5cbd6 PA |
441 | value, |
442 | breakpoints_always_inserted_mode () ? "on" : "off"); | |
443 | else | |
3e43a32a MS |
444 | fprintf_filtered (file, _("Always inserted breakpoint mode is %s.\n"), |
445 | value); | |
74960c60 VP |
446 | } |
447 | ||
33e5cbd6 PA |
448 | int |
449 | breakpoints_always_inserted_mode (void) | |
450 | { | |
72d0e2c5 YQ |
451 | return (always_inserted_mode == AUTO_BOOLEAN_TRUE |
452 | || (always_inserted_mode == AUTO_BOOLEAN_AUTO && non_stop)); | |
33e5cbd6 | 453 | } |
765dc015 | 454 | |
b775012e LM |
455 | static const char condition_evaluation_both[] = "host or target"; |
456 | ||
457 | /* Modes for breakpoint condition evaluation. */ | |
458 | static const char condition_evaluation_auto[] = "auto"; | |
459 | static const char condition_evaluation_host[] = "host"; | |
460 | static const char condition_evaluation_target[] = "target"; | |
461 | static const char *const condition_evaluation_enums[] = { | |
462 | condition_evaluation_auto, | |
463 | condition_evaluation_host, | |
464 | condition_evaluation_target, | |
465 | NULL | |
466 | }; | |
467 | ||
468 | /* Global that holds the current mode for breakpoint condition evaluation. */ | |
469 | static const char *condition_evaluation_mode_1 = condition_evaluation_auto; | |
470 | ||
471 | /* Global that we use to display information to the user (gets its value from | |
472 | condition_evaluation_mode_1. */ | |
473 | static const char *condition_evaluation_mode = condition_evaluation_auto; | |
474 | ||
475 | /* Translate a condition evaluation mode MODE into either "host" | |
476 | or "target". This is used mostly to translate from "auto" to the | |
477 | real setting that is being used. It returns the translated | |
478 | evaluation mode. */ | |
479 | ||
480 | static const char * | |
481 | translate_condition_evaluation_mode (const char *mode) | |
482 | { | |
483 | if (mode == condition_evaluation_auto) | |
484 | { | |
485 | if (target_supports_evaluation_of_breakpoint_conditions ()) | |
486 | return condition_evaluation_target; | |
487 | else | |
488 | return condition_evaluation_host; | |
489 | } | |
490 | else | |
491 | return mode; | |
492 | } | |
493 | ||
494 | /* Discovers what condition_evaluation_auto translates to. */ | |
495 | ||
496 | static const char * | |
497 | breakpoint_condition_evaluation_mode (void) | |
498 | { | |
499 | return translate_condition_evaluation_mode (condition_evaluation_mode); | |
500 | } | |
501 | ||
502 | /* Return true if GDB should evaluate breakpoint conditions or false | |
503 | otherwise. */ | |
504 | ||
505 | static int | |
506 | gdb_evaluates_breakpoint_condition_p (void) | |
507 | { | |
508 | const char *mode = breakpoint_condition_evaluation_mode (); | |
509 | ||
510 | return (mode == condition_evaluation_host); | |
511 | } | |
512 | ||
a14ed312 | 513 | void _initialize_breakpoint (void); |
c906108c | 514 | |
c906108c SS |
515 | /* Are we executing breakpoint commands? */ |
516 | static int executing_breakpoint_commands; | |
517 | ||
c02f5703 MS |
518 | /* Are overlay event breakpoints enabled? */ |
519 | static int overlay_events_enabled; | |
520 | ||
e09342b5 TJB |
521 | /* See description in breakpoint.h. */ |
522 | int target_exact_watchpoints = 0; | |
523 | ||
c906108c | 524 | /* Walk the following statement or block through all breakpoints. |
e5dd4106 | 525 | ALL_BREAKPOINTS_SAFE does so even if the statement deletes the |
4a64f543 | 526 | current breakpoint. */ |
c906108c | 527 | |
5c44784c | 528 | #define ALL_BREAKPOINTS(B) for (B = breakpoint_chain; B; B = B->next) |
c906108c | 529 | |
5c44784c JM |
530 | #define ALL_BREAKPOINTS_SAFE(B,TMP) \ |
531 | for (B = breakpoint_chain; \ | |
532 | B ? (TMP=B->next, 1): 0; \ | |
533 | B = TMP) | |
c906108c | 534 | |
4a64f543 MS |
535 | /* Similar iterator for the low-level breakpoints. SAFE variant is |
536 | not provided so update_global_location_list must not be called | |
537 | while executing the block of ALL_BP_LOCATIONS. */ | |
7cc221ef | 538 | |
876fa593 JK |
539 | #define ALL_BP_LOCATIONS(B,BP_TMP) \ |
540 | for (BP_TMP = bp_location; \ | |
541 | BP_TMP < bp_location + bp_location_count && (B = *BP_TMP); \ | |
542 | BP_TMP++) | |
7cc221ef | 543 | |
b775012e LM |
544 | /* Iterates through locations with address ADDRESS for the currently selected |
545 | program space. BP_LOCP_TMP points to each object. BP_LOCP_START points | |
546 | to where the loop should start from. | |
547 | If BP_LOCP_START is a NULL pointer, the macro automatically seeks the | |
548 | appropriate location to start with. */ | |
549 | ||
550 | #define ALL_BP_LOCATIONS_AT_ADDR(BP_LOCP_TMP, BP_LOCP_START, ADDRESS) \ | |
551 | for (BP_LOCP_START = BP_LOCP_START == NULL ? get_first_locp_gte_addr (ADDRESS) : BP_LOCP_START, \ | |
552 | BP_LOCP_TMP = BP_LOCP_START; \ | |
553 | BP_LOCP_START \ | |
554 | && (BP_LOCP_TMP < bp_location + bp_location_count \ | |
555 | && (*BP_LOCP_TMP)->address == ADDRESS); \ | |
556 | BP_LOCP_TMP++) | |
557 | ||
1042e4c0 SS |
558 | /* Iterator for tracepoints only. */ |
559 | ||
560 | #define ALL_TRACEPOINTS(B) \ | |
561 | for (B = breakpoint_chain; B; B = B->next) \ | |
d77f58be | 562 | if (is_tracepoint (B)) |
1042e4c0 | 563 | |
7cc221ef | 564 | /* Chains of all breakpoints defined. */ |
c906108c SS |
565 | |
566 | struct breakpoint *breakpoint_chain; | |
567 | ||
876fa593 JK |
568 | /* Array is sorted by bp_location_compare - primarily by the ADDRESS. */ |
569 | ||
570 | static struct bp_location **bp_location; | |
571 | ||
572 | /* Number of elements of BP_LOCATION. */ | |
573 | ||
574 | static unsigned bp_location_count; | |
575 | ||
4a64f543 MS |
576 | /* Maximum alignment offset between bp_target_info.PLACED_ADDRESS and |
577 | ADDRESS for the current elements of BP_LOCATION which get a valid | |
578 | result from bp_location_has_shadow. You can use it for roughly | |
579 | limiting the subrange of BP_LOCATION to scan for shadow bytes for | |
580 | an address you need to read. */ | |
876fa593 JK |
581 | |
582 | static CORE_ADDR bp_location_placed_address_before_address_max; | |
583 | ||
4a64f543 MS |
584 | /* Maximum offset plus alignment between bp_target_info.PLACED_ADDRESS |
585 | + bp_target_info.SHADOW_LEN and ADDRESS for the current elements of | |
586 | BP_LOCATION which get a valid result from bp_location_has_shadow. | |
587 | You can use it for roughly limiting the subrange of BP_LOCATION to | |
588 | scan for shadow bytes for an address you need to read. */ | |
876fa593 JK |
589 | |
590 | static CORE_ADDR bp_location_shadow_len_after_address_max; | |
7cc221ef | 591 | |
4a64f543 MS |
592 | /* The locations that no longer correspond to any breakpoint, unlinked |
593 | from bp_location array, but for which a hit may still be reported | |
594 | by a target. */ | |
20874c92 VP |
595 | VEC(bp_location_p) *moribund_locations = NULL; |
596 | ||
c906108c SS |
597 | /* Number of last breakpoint made. */ |
598 | ||
95a42b64 TT |
599 | static int breakpoint_count; |
600 | ||
86b17b60 PA |
601 | /* The value of `breakpoint_count' before the last command that |
602 | created breakpoints. If the last (break-like) command created more | |
603 | than one breakpoint, then the difference between BREAKPOINT_COUNT | |
604 | and PREV_BREAKPOINT_COUNT is more than one. */ | |
605 | static int prev_breakpoint_count; | |
c906108c | 606 | |
1042e4c0 SS |
607 | /* Number of last tracepoint made. */ |
608 | ||
95a42b64 | 609 | static int tracepoint_count; |
1042e4c0 | 610 | |
6149aea9 PA |
611 | static struct cmd_list_element *breakpoint_set_cmdlist; |
612 | static struct cmd_list_element *breakpoint_show_cmdlist; | |
9291a0cd | 613 | struct cmd_list_element *save_cmdlist; |
6149aea9 | 614 | |
468d015d JJ |
615 | /* Return whether a breakpoint is an active enabled breakpoint. */ |
616 | static int | |
617 | breakpoint_enabled (struct breakpoint *b) | |
618 | { | |
0d381245 | 619 | return (b->enable_state == bp_enabled); |
468d015d JJ |
620 | } |
621 | ||
c906108c SS |
622 | /* Set breakpoint count to NUM. */ |
623 | ||
95a42b64 | 624 | static void |
fba45db2 | 625 | set_breakpoint_count (int num) |
c906108c | 626 | { |
86b17b60 | 627 | prev_breakpoint_count = breakpoint_count; |
c906108c | 628 | breakpoint_count = num; |
4fa62494 | 629 | set_internalvar_integer (lookup_internalvar ("bpnum"), num); |
c906108c SS |
630 | } |
631 | ||
86b17b60 PA |
632 | /* Used by `start_rbreak_breakpoints' below, to record the current |
633 | breakpoint count before "rbreak" creates any breakpoint. */ | |
634 | static int rbreak_start_breakpoint_count; | |
635 | ||
95a42b64 TT |
636 | /* Called at the start an "rbreak" command to record the first |
637 | breakpoint made. */ | |
86b17b60 | 638 | |
95a42b64 TT |
639 | void |
640 | start_rbreak_breakpoints (void) | |
641 | { | |
86b17b60 | 642 | rbreak_start_breakpoint_count = breakpoint_count; |
95a42b64 TT |
643 | } |
644 | ||
645 | /* Called at the end of an "rbreak" command to record the last | |
646 | breakpoint made. */ | |
86b17b60 | 647 | |
95a42b64 TT |
648 | void |
649 | end_rbreak_breakpoints (void) | |
650 | { | |
86b17b60 | 651 | prev_breakpoint_count = rbreak_start_breakpoint_count; |
95a42b64 TT |
652 | } |
653 | ||
4a64f543 | 654 | /* Used in run_command to zero the hit count when a new run starts. */ |
c906108c SS |
655 | |
656 | void | |
fba45db2 | 657 | clear_breakpoint_hit_counts (void) |
c906108c SS |
658 | { |
659 | struct breakpoint *b; | |
660 | ||
661 | ALL_BREAKPOINTS (b) | |
662 | b->hit_count = 0; | |
663 | } | |
664 | ||
9add0f1b TT |
665 | /* Allocate a new counted_command_line with reference count of 1. |
666 | The new structure owns COMMANDS. */ | |
667 | ||
668 | static struct counted_command_line * | |
669 | alloc_counted_command_line (struct command_line *commands) | |
670 | { | |
671 | struct counted_command_line *result | |
672 | = xmalloc (sizeof (struct counted_command_line)); | |
cc59ec59 | 673 | |
9add0f1b TT |
674 | result->refc = 1; |
675 | result->commands = commands; | |
676 | return result; | |
677 | } | |
678 | ||
679 | /* Increment reference count. This does nothing if CMD is NULL. */ | |
680 | ||
681 | static void | |
682 | incref_counted_command_line (struct counted_command_line *cmd) | |
683 | { | |
684 | if (cmd) | |
685 | ++cmd->refc; | |
686 | } | |
687 | ||
688 | /* Decrement reference count. If the reference count reaches 0, | |
689 | destroy the counted_command_line. Sets *CMDP to NULL. This does | |
690 | nothing if *CMDP is NULL. */ | |
691 | ||
692 | static void | |
693 | decref_counted_command_line (struct counted_command_line **cmdp) | |
694 | { | |
695 | if (*cmdp) | |
696 | { | |
697 | if (--(*cmdp)->refc == 0) | |
698 | { | |
699 | free_command_lines (&(*cmdp)->commands); | |
700 | xfree (*cmdp); | |
701 | } | |
702 | *cmdp = NULL; | |
703 | } | |
704 | } | |
705 | ||
706 | /* A cleanup function that calls decref_counted_command_line. */ | |
707 | ||
708 | static void | |
709 | do_cleanup_counted_command_line (void *arg) | |
710 | { | |
711 | decref_counted_command_line (arg); | |
712 | } | |
713 | ||
714 | /* Create a cleanup that calls decref_counted_command_line on the | |
715 | argument. */ | |
716 | ||
717 | static struct cleanup * | |
718 | make_cleanup_decref_counted_command_line (struct counted_command_line **cmdp) | |
719 | { | |
720 | return make_cleanup (do_cleanup_counted_command_line, cmdp); | |
721 | } | |
722 | ||
c906108c | 723 | \f |
48cb2d85 VP |
724 | /* Return the breakpoint with the specified number, or NULL |
725 | if the number does not refer to an existing breakpoint. */ | |
726 | ||
727 | struct breakpoint * | |
728 | get_breakpoint (int num) | |
729 | { | |
730 | struct breakpoint *b; | |
731 | ||
732 | ALL_BREAKPOINTS (b) | |
733 | if (b->number == num) | |
734 | return b; | |
735 | ||
736 | return NULL; | |
737 | } | |
5c44784c | 738 | |
c906108c | 739 | \f |
adc36818 | 740 | |
b775012e LM |
741 | /* Mark locations as "conditions have changed" in case the target supports |
742 | evaluating conditions on its side. */ | |
743 | ||
744 | static void | |
745 | mark_breakpoint_modified (struct breakpoint *b) | |
746 | { | |
747 | struct bp_location *loc; | |
748 | ||
749 | /* This is only meaningful if the target is | |
750 | evaluating conditions and if the user has | |
751 | opted for condition evaluation on the target's | |
752 | side. */ | |
753 | if (gdb_evaluates_breakpoint_condition_p () | |
754 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
755 | return; | |
756 | ||
757 | if (!is_breakpoint (b)) | |
758 | return; | |
759 | ||
760 | for (loc = b->loc; loc; loc = loc->next) | |
761 | loc->condition_changed = condition_modified; | |
762 | } | |
763 | ||
764 | /* Mark location as "conditions have changed" in case the target supports | |
765 | evaluating conditions on its side. */ | |
766 | ||
767 | static void | |
768 | mark_breakpoint_location_modified (struct bp_location *loc) | |
769 | { | |
770 | /* This is only meaningful if the target is | |
771 | evaluating conditions and if the user has | |
772 | opted for condition evaluation on the target's | |
773 | side. */ | |
774 | if (gdb_evaluates_breakpoint_condition_p () | |
775 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
776 | ||
777 | return; | |
778 | ||
779 | if (!is_breakpoint (loc->owner)) | |
780 | return; | |
781 | ||
782 | loc->condition_changed = condition_modified; | |
783 | } | |
784 | ||
785 | /* Sets the condition-evaluation mode using the static global | |
786 | condition_evaluation_mode. */ | |
787 | ||
788 | static void | |
789 | set_condition_evaluation_mode (char *args, int from_tty, | |
790 | struct cmd_list_element *c) | |
791 | { | |
b775012e LM |
792 | const char *old_mode, *new_mode; |
793 | ||
794 | if ((condition_evaluation_mode_1 == condition_evaluation_target) | |
795 | && !target_supports_evaluation_of_breakpoint_conditions ()) | |
796 | { | |
797 | condition_evaluation_mode_1 = condition_evaluation_mode; | |
798 | warning (_("Target does not support breakpoint condition evaluation.\n" | |
799 | "Using host evaluation mode instead.")); | |
800 | return; | |
801 | } | |
802 | ||
803 | new_mode = translate_condition_evaluation_mode (condition_evaluation_mode_1); | |
804 | old_mode = translate_condition_evaluation_mode (condition_evaluation_mode); | |
805 | ||
abf1152a JK |
806 | /* Flip the switch. Flip it even if OLD_MODE == NEW_MODE as one of the |
807 | settings was "auto". */ | |
808 | condition_evaluation_mode = condition_evaluation_mode_1; | |
809 | ||
b775012e LM |
810 | /* Only update the mode if the user picked a different one. */ |
811 | if (new_mode != old_mode) | |
812 | { | |
813 | struct bp_location *loc, **loc_tmp; | |
814 | /* If the user switched to a different evaluation mode, we | |
815 | need to synch the changes with the target as follows: | |
816 | ||
817 | "host" -> "target": Send all (valid) conditions to the target. | |
818 | "target" -> "host": Remove all the conditions from the target. | |
819 | */ | |
820 | ||
b775012e LM |
821 | if (new_mode == condition_evaluation_target) |
822 | { | |
823 | /* Mark everything modified and synch conditions with the | |
824 | target. */ | |
825 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
826 | mark_breakpoint_location_modified (loc); | |
827 | } | |
828 | else | |
829 | { | |
830 | /* Manually mark non-duplicate locations to synch conditions | |
831 | with the target. We do this to remove all the conditions the | |
832 | target knows about. */ | |
833 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
834 | if (is_breakpoint (loc->owner) && loc->inserted) | |
835 | loc->needs_update = 1; | |
836 | } | |
837 | ||
838 | /* Do the update. */ | |
839 | update_global_location_list (1); | |
840 | } | |
841 | ||
842 | return; | |
843 | } | |
844 | ||
845 | /* Shows the current mode of breakpoint condition evaluation. Explicitly shows | |
846 | what "auto" is translating to. */ | |
847 | ||
848 | static void | |
849 | show_condition_evaluation_mode (struct ui_file *file, int from_tty, | |
850 | struct cmd_list_element *c, const char *value) | |
851 | { | |
852 | if (condition_evaluation_mode == condition_evaluation_auto) | |
853 | fprintf_filtered (file, | |
854 | _("Breakpoint condition evaluation " | |
855 | "mode is %s (currently %s).\n"), | |
856 | value, | |
857 | breakpoint_condition_evaluation_mode ()); | |
858 | else | |
859 | fprintf_filtered (file, _("Breakpoint condition evaluation mode is %s.\n"), | |
860 | value); | |
861 | } | |
862 | ||
863 | /* A comparison function for bp_location AP and BP that is used by | |
864 | bsearch. This comparison function only cares about addresses, unlike | |
865 | the more general bp_location_compare function. */ | |
866 | ||
867 | static int | |
868 | bp_location_compare_addrs (const void *ap, const void *bp) | |
869 | { | |
870 | struct bp_location *a = *(void **) ap; | |
871 | struct bp_location *b = *(void **) bp; | |
872 | ||
873 | if (a->address == b->address) | |
874 | return 0; | |
875 | else | |
876 | return ((a->address > b->address) - (a->address < b->address)); | |
877 | } | |
878 | ||
879 | /* Helper function to skip all bp_locations with addresses | |
880 | less than ADDRESS. It returns the first bp_location that | |
881 | is greater than or equal to ADDRESS. If none is found, just | |
882 | return NULL. */ | |
883 | ||
884 | static struct bp_location ** | |
885 | get_first_locp_gte_addr (CORE_ADDR address) | |
886 | { | |
887 | struct bp_location dummy_loc; | |
888 | struct bp_location *dummy_locp = &dummy_loc; | |
889 | struct bp_location **locp_found = NULL; | |
890 | ||
891 | /* Initialize the dummy location's address field. */ | |
892 | memset (&dummy_loc, 0, sizeof (struct bp_location)); | |
893 | dummy_loc.address = address; | |
894 | ||
895 | /* Find a close match to the first location at ADDRESS. */ | |
896 | locp_found = bsearch (&dummy_locp, bp_location, bp_location_count, | |
897 | sizeof (struct bp_location **), | |
898 | bp_location_compare_addrs); | |
899 | ||
900 | /* Nothing was found, nothing left to do. */ | |
901 | if (locp_found == NULL) | |
902 | return NULL; | |
903 | ||
904 | /* We may have found a location that is at ADDRESS but is not the first in the | |
905 | location's list. Go backwards (if possible) and locate the first one. */ | |
906 | while ((locp_found - 1) >= bp_location | |
907 | && (*(locp_found - 1))->address == address) | |
908 | locp_found--; | |
909 | ||
910 | return locp_found; | |
911 | } | |
912 | ||
adc36818 PM |
913 | void |
914 | set_breakpoint_condition (struct breakpoint *b, char *exp, | |
915 | int from_tty) | |
916 | { | |
3a5c3e22 PA |
917 | xfree (b->cond_string); |
918 | b->cond_string = NULL; | |
adc36818 | 919 | |
3a5c3e22 | 920 | if (is_watchpoint (b)) |
adc36818 | 921 | { |
3a5c3e22 PA |
922 | struct watchpoint *w = (struct watchpoint *) b; |
923 | ||
924 | xfree (w->cond_exp); | |
925 | w->cond_exp = NULL; | |
926 | } | |
927 | else | |
928 | { | |
929 | struct bp_location *loc; | |
930 | ||
931 | for (loc = b->loc; loc; loc = loc->next) | |
932 | { | |
933 | xfree (loc->cond); | |
934 | loc->cond = NULL; | |
b775012e LM |
935 | |
936 | /* No need to free the condition agent expression | |
937 | bytecode (if we have one). We will handle this | |
938 | when we go through update_global_location_list. */ | |
3a5c3e22 | 939 | } |
adc36818 | 940 | } |
adc36818 PM |
941 | |
942 | if (*exp == 0) | |
943 | { | |
944 | if (from_tty) | |
945 | printf_filtered (_("Breakpoint %d now unconditional.\n"), b->number); | |
946 | } | |
947 | else | |
948 | { | |
949 | char *arg = exp; | |
cc59ec59 | 950 | |
adc36818 PM |
951 | /* I don't know if it matters whether this is the string the user |
952 | typed in or the decompiled expression. */ | |
953 | b->cond_string = xstrdup (arg); | |
954 | b->condition_not_parsed = 0; | |
955 | ||
956 | if (is_watchpoint (b)) | |
957 | { | |
3a5c3e22 PA |
958 | struct watchpoint *w = (struct watchpoint *) b; |
959 | ||
adc36818 PM |
960 | innermost_block = NULL; |
961 | arg = exp; | |
1bb9788d | 962 | w->cond_exp = parse_exp_1 (&arg, 0, 0, 0); |
adc36818 PM |
963 | if (*arg) |
964 | error (_("Junk at end of expression")); | |
3a5c3e22 | 965 | w->cond_exp_valid_block = innermost_block; |
adc36818 PM |
966 | } |
967 | else | |
968 | { | |
3a5c3e22 PA |
969 | struct bp_location *loc; |
970 | ||
adc36818 PM |
971 | for (loc = b->loc; loc; loc = loc->next) |
972 | { | |
973 | arg = exp; | |
974 | loc->cond = | |
1bb9788d TT |
975 | parse_exp_1 (&arg, loc->address, |
976 | block_for_pc (loc->address), 0); | |
adc36818 PM |
977 | if (*arg) |
978 | error (_("Junk at end of expression")); | |
979 | } | |
980 | } | |
981 | } | |
b775012e LM |
982 | mark_breakpoint_modified (b); |
983 | ||
adc36818 | 984 | breakpoints_changed (); |
8d3788bd | 985 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
986 | } |
987 | ||
d55637df TT |
988 | /* Completion for the "condition" command. */ |
989 | ||
990 | static VEC (char_ptr) * | |
991 | condition_completer (struct cmd_list_element *cmd, char *text, char *word) | |
992 | { | |
993 | char *space; | |
994 | ||
995 | text = skip_spaces (text); | |
996 | space = skip_to_space (text); | |
997 | if (*space == '\0') | |
998 | { | |
999 | int len; | |
1000 | struct breakpoint *b; | |
1001 | VEC (char_ptr) *result = NULL; | |
1002 | ||
1003 | if (text[0] == '$') | |
1004 | { | |
1005 | /* We don't support completion of history indices. */ | |
1006 | if (isdigit (text[1])) | |
1007 | return NULL; | |
1008 | return complete_internalvar (&text[1]); | |
1009 | } | |
1010 | ||
1011 | /* We're completing the breakpoint number. */ | |
1012 | len = strlen (text); | |
1013 | ||
1014 | ALL_BREAKPOINTS (b) | |
1015 | { | |
1016 | int single = b->loc->next == NULL; | |
1017 | struct bp_location *loc; | |
1018 | int count = 1; | |
1019 | ||
1020 | for (loc = b->loc; loc; loc = loc->next) | |
1021 | { | |
1022 | char location[50]; | |
1023 | ||
1024 | if (single) | |
1025 | sprintf (location, "%d", b->number); | |
1026 | else | |
1027 | sprintf (location, "%d.%d", b->number, count); | |
1028 | ||
1029 | if (strncmp (location, text, len) == 0) | |
1030 | VEC_safe_push (char_ptr, result, xstrdup (location)); | |
1031 | ||
1032 | ++count; | |
1033 | } | |
1034 | } | |
1035 | ||
1036 | return result; | |
1037 | } | |
1038 | ||
1039 | /* We're completing the expression part. */ | |
1040 | text = skip_spaces (space); | |
1041 | return expression_completer (cmd, text, word); | |
1042 | } | |
1043 | ||
c906108c SS |
1044 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1045 | ||
1046 | static void | |
fba45db2 | 1047 | condition_command (char *arg, int from_tty) |
c906108c | 1048 | { |
52f0bd74 | 1049 | struct breakpoint *b; |
c906108c | 1050 | char *p; |
52f0bd74 | 1051 | int bnum; |
c906108c SS |
1052 | |
1053 | if (arg == 0) | |
e2e0b3e5 | 1054 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1055 | |
1056 | p = arg; | |
1057 | bnum = get_number (&p); | |
5c44784c | 1058 | if (bnum == 0) |
8a3fe4f8 | 1059 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1060 | |
1061 | ALL_BREAKPOINTS (b) | |
1062 | if (b->number == bnum) | |
2f069f6f | 1063 | { |
7371cf6d PM |
1064 | /* Check if this breakpoint has a Python object assigned to |
1065 | it, and if it has a definition of the "stop" | |
1066 | method. This method and conditions entered into GDB from | |
1067 | the CLI are mutually exclusive. */ | |
1068 | if (b->py_bp_object | |
1069 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
1070 | error (_("Cannot set a condition where a Python 'stop' " | |
1071 | "method has been defined in the breakpoint.")); | |
2566ad2d | 1072 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1073 | |
1074 | if (is_breakpoint (b)) | |
1075 | update_global_location_list (1); | |
1076 | ||
2f069f6f JB |
1077 | return; |
1078 | } | |
c906108c | 1079 | |
8a3fe4f8 | 1080 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1081 | } |
1082 | ||
a7bdde9e VP |
1083 | /* Check that COMMAND do not contain commands that are suitable |
1084 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1085 | Throw if any such commands is found. */ |
1086 | ||
a7bdde9e VP |
1087 | static void |
1088 | check_no_tracepoint_commands (struct command_line *commands) | |
1089 | { | |
1090 | struct command_line *c; | |
cc59ec59 | 1091 | |
a7bdde9e VP |
1092 | for (c = commands; c; c = c->next) |
1093 | { | |
1094 | int i; | |
1095 | ||
1096 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1097 | error (_("The 'while-stepping' command can " |
1098 | "only be used for tracepoints")); | |
a7bdde9e VP |
1099 | |
1100 | for (i = 0; i < c->body_count; ++i) | |
1101 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1102 | ||
1103 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1104 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1105 | command directly. */ |
1106 | if (strstr (c->line, "collect ") == c->line) | |
1107 | error (_("The 'collect' command can only be used for tracepoints")); | |
1108 | ||
51661e93 VP |
1109 | if (strstr (c->line, "teval ") == c->line) |
1110 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1111 | } |
1112 | } | |
1113 | ||
d77f58be SS |
1114 | /* Encapsulate tests for different types of tracepoints. */ |
1115 | ||
d9b3f62e PA |
1116 | static int |
1117 | is_tracepoint_type (enum bptype type) | |
1118 | { | |
1119 | return (type == bp_tracepoint | |
1120 | || type == bp_fast_tracepoint | |
1121 | || type == bp_static_tracepoint); | |
1122 | } | |
1123 | ||
a7bdde9e | 1124 | int |
d77f58be | 1125 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1126 | { |
d9b3f62e | 1127 | return is_tracepoint_type (b->type); |
a7bdde9e | 1128 | } |
d9b3f62e | 1129 | |
e5dd4106 | 1130 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1131 | breakpoint. This function will throw an exception if a problem is |
1132 | found. */ | |
48cb2d85 | 1133 | |
95a42b64 TT |
1134 | static void |
1135 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1136 | struct command_line *commands) | |
48cb2d85 | 1137 | { |
d77f58be | 1138 | if (is_tracepoint (b)) |
a7bdde9e | 1139 | { |
4a64f543 MS |
1140 | /* We need to verify that each top-level element of commands is |
1141 | valid for tracepoints, that there's at most one | |
1142 | while-stepping element, and that while-stepping's body has | |
1143 | valid tracing commands excluding nested while-stepping. */ | |
a7bdde9e VP |
1144 | struct command_line *c; |
1145 | struct command_line *while_stepping = 0; | |
1146 | for (c = commands; c; c = c->next) | |
1147 | { | |
a7bdde9e VP |
1148 | if (c->control_type == while_stepping_control) |
1149 | { | |
1150 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1151 | error (_("The 'while-stepping' command " |
1152 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1153 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1154 | error (_("The 'while-stepping' command " |
1155 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1156 | |
1157 | if (while_stepping) | |
3e43a32a MS |
1158 | error (_("The 'while-stepping' command " |
1159 | "can be used only once")); | |
a7bdde9e VP |
1160 | else |
1161 | while_stepping = c; | |
1162 | } | |
1163 | } | |
1164 | if (while_stepping) | |
1165 | { | |
1166 | struct command_line *c2; | |
1167 | ||
1168 | gdb_assert (while_stepping->body_count == 1); | |
1169 | c2 = while_stepping->body_list[0]; | |
1170 | for (; c2; c2 = c2->next) | |
1171 | { | |
a7bdde9e VP |
1172 | if (c2->control_type == while_stepping_control) |
1173 | error (_("The 'while-stepping' command cannot be nested")); | |
1174 | } | |
1175 | } | |
1176 | } | |
1177 | else | |
1178 | { | |
1179 | check_no_tracepoint_commands (commands); | |
1180 | } | |
95a42b64 TT |
1181 | } |
1182 | ||
0fb4aa4b PA |
1183 | /* Return a vector of all the static tracepoints set at ADDR. The |
1184 | caller is responsible for releasing the vector. */ | |
1185 | ||
1186 | VEC(breakpoint_p) * | |
1187 | static_tracepoints_here (CORE_ADDR addr) | |
1188 | { | |
1189 | struct breakpoint *b; | |
1190 | VEC(breakpoint_p) *found = 0; | |
1191 | struct bp_location *loc; | |
1192 | ||
1193 | ALL_BREAKPOINTS (b) | |
1194 | if (b->type == bp_static_tracepoint) | |
1195 | { | |
1196 | for (loc = b->loc; loc; loc = loc->next) | |
1197 | if (loc->address == addr) | |
1198 | VEC_safe_push(breakpoint_p, found, b); | |
1199 | } | |
1200 | ||
1201 | return found; | |
1202 | } | |
1203 | ||
95a42b64 | 1204 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1205 | validate that only allowed commands are included. */ |
95a42b64 TT |
1206 | |
1207 | void | |
4a64f543 MS |
1208 | breakpoint_set_commands (struct breakpoint *b, |
1209 | struct command_line *commands) | |
95a42b64 TT |
1210 | { |
1211 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1212 | |
9add0f1b TT |
1213 | decref_counted_command_line (&b->commands); |
1214 | b->commands = alloc_counted_command_line (commands); | |
48cb2d85 | 1215 | breakpoints_changed (); |
8d3788bd | 1216 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1217 | } |
1218 | ||
45a43567 TT |
1219 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1220 | is not the same as the "silent" that may appear in the breakpoint's | |
1221 | commands. */ | |
1222 | ||
1223 | void | |
1224 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1225 | { | |
1226 | int old_silent = b->silent; | |
1227 | ||
1228 | b->silent = silent; | |
1229 | if (old_silent != silent) | |
8d3788bd | 1230 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1231 | } |
1232 | ||
1233 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1234 | breakpoint work for any thread. */ | |
1235 | ||
1236 | void | |
1237 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1238 | { | |
1239 | int old_thread = b->thread; | |
1240 | ||
1241 | b->thread = thread; | |
1242 | if (old_thread != thread) | |
8d3788bd | 1243 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1244 | } |
1245 | ||
1246 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1247 | breakpoint work for any task. */ | |
1248 | ||
1249 | void | |
1250 | breakpoint_set_task (struct breakpoint *b, int task) | |
1251 | { | |
1252 | int old_task = b->task; | |
1253 | ||
1254 | b->task = task; | |
1255 | if (old_task != task) | |
8d3788bd | 1256 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1257 | } |
1258 | ||
95a42b64 TT |
1259 | void |
1260 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1261 | { |
1262 | struct breakpoint *b = closure; | |
cc59ec59 | 1263 | |
a7bdde9e VP |
1264 | validate_actionline (&line, b); |
1265 | } | |
1266 | ||
95a42b64 TT |
1267 | /* A structure used to pass information through |
1268 | map_breakpoint_numbers. */ | |
1269 | ||
1270 | struct commands_info | |
1271 | { | |
1272 | /* True if the command was typed at a tty. */ | |
1273 | int from_tty; | |
86b17b60 PA |
1274 | |
1275 | /* The breakpoint range spec. */ | |
1276 | char *arg; | |
1277 | ||
95a42b64 TT |
1278 | /* Non-NULL if the body of the commands are being read from this |
1279 | already-parsed command. */ | |
1280 | struct command_line *control; | |
86b17b60 | 1281 | |
95a42b64 TT |
1282 | /* The command lines read from the user, or NULL if they have not |
1283 | yet been read. */ | |
1284 | struct counted_command_line *cmd; | |
1285 | }; | |
1286 | ||
1287 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1288 | commands_command. */ | |
1289 | ||
c906108c | 1290 | static void |
95a42b64 | 1291 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1292 | { |
95a42b64 | 1293 | struct commands_info *info = data; |
c906108c | 1294 | |
95a42b64 TT |
1295 | if (info->cmd == NULL) |
1296 | { | |
1297 | struct command_line *l; | |
5c44784c | 1298 | |
95a42b64 TT |
1299 | if (info->control != NULL) |
1300 | l = copy_command_lines (info->control->body_list[0]); | |
1301 | else | |
86b17b60 PA |
1302 | { |
1303 | struct cleanup *old_chain; | |
1304 | char *str; | |
c5aa993b | 1305 | |
3e43a32a MS |
1306 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1307 | "%s, one per line."), | |
86b17b60 PA |
1308 | info->arg); |
1309 | ||
1310 | old_chain = make_cleanup (xfree, str); | |
1311 | ||
1312 | l = read_command_lines (str, | |
1313 | info->from_tty, 1, | |
d77f58be | 1314 | (is_tracepoint (b) |
86b17b60 PA |
1315 | ? check_tracepoint_command : 0), |
1316 | b); | |
1317 | ||
1318 | do_cleanups (old_chain); | |
1319 | } | |
a7bdde9e | 1320 | |
95a42b64 TT |
1321 | info->cmd = alloc_counted_command_line (l); |
1322 | } | |
1323 | ||
1324 | /* If a breakpoint was on the list more than once, we don't need to | |
1325 | do anything. */ | |
1326 | if (b->commands != info->cmd) | |
1327 | { | |
1328 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1329 | incref_counted_command_line (info->cmd); | |
1330 | decref_counted_command_line (&b->commands); | |
1331 | b->commands = info->cmd; | |
1332 | breakpoints_changed (); | |
8d3788bd | 1333 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1334 | } |
95a42b64 TT |
1335 | } |
1336 | ||
1337 | static void | |
4a64f543 MS |
1338 | commands_command_1 (char *arg, int from_tty, |
1339 | struct command_line *control) | |
95a42b64 TT |
1340 | { |
1341 | struct cleanup *cleanups; | |
1342 | struct commands_info info; | |
1343 | ||
1344 | info.from_tty = from_tty; | |
1345 | info.control = control; | |
1346 | info.cmd = NULL; | |
1347 | /* If we read command lines from the user, then `info' will hold an | |
1348 | extra reference to the commands that we must clean up. */ | |
1349 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1350 | ||
1351 | if (arg == NULL || !*arg) | |
1352 | { | |
86b17b60 | 1353 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1354 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1355 | breakpoint_count); | |
95a42b64 TT |
1356 | else if (breakpoint_count > 0) |
1357 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1358 | else |
1359 | { | |
1360 | /* So that we don't try to free the incoming non-NULL | |
1361 | argument in the cleanup below. Mapping breakpoint | |
1362 | numbers will fail in this case. */ | |
1363 | arg = NULL; | |
1364 | } | |
95a42b64 | 1365 | } |
9766ced4 SS |
1366 | else |
1367 | /* The command loop has some static state, so we need to preserve | |
1368 | our argument. */ | |
1369 | arg = xstrdup (arg); | |
86b17b60 PA |
1370 | |
1371 | if (arg != NULL) | |
1372 | make_cleanup (xfree, arg); | |
1373 | ||
1374 | info.arg = arg; | |
95a42b64 TT |
1375 | |
1376 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1377 | ||
1378 | if (info.cmd == NULL) | |
1379 | error (_("No breakpoints specified.")); | |
1380 | ||
1381 | do_cleanups (cleanups); | |
1382 | } | |
1383 | ||
1384 | static void | |
1385 | commands_command (char *arg, int from_tty) | |
1386 | { | |
1387 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1388 | } |
40c03ae8 EZ |
1389 | |
1390 | /* Like commands_command, but instead of reading the commands from | |
1391 | input stream, takes them from an already parsed command structure. | |
1392 | ||
1393 | This is used by cli-script.c to DTRT with breakpoint commands | |
1394 | that are part of if and while bodies. */ | |
1395 | enum command_control_type | |
1396 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1397 | { | |
95a42b64 TT |
1398 | commands_command_1 (arg, 0, cmd); |
1399 | return simple_control; | |
40c03ae8 | 1400 | } |
876fa593 JK |
1401 | |
1402 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1403 | ||
1404 | static int | |
1405 | bp_location_has_shadow (struct bp_location *bl) | |
1406 | { | |
1407 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1408 | return 0; | |
1409 | if (!bl->inserted) | |
1410 | return 0; | |
1411 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1412 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1413 | return 0; |
1414 | return 1; | |
1415 | } | |
1416 | ||
8defab1a | 1417 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1418 | by replacing any memory breakpoints with their shadowed contents. |
1419 | ||
35c63cd8 JB |
1420 | If READBUF is not NULL, this buffer must not overlap with any of |
1421 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1422 | a failed assertion internal error will be raised. | |
1423 | ||
876fa593 | 1424 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1425 | bl->address - bp_location_placed_address_before_address_max |
1426 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1427 | The range we were requested to resolve shadows for is: |
1428 | memaddr ... memaddr + len | |
1429 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1430 | memaddr + len <= (bl->address |
1431 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1432 | and: |
35df4500 | 1433 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1434 | |
8defab1a | 1435 | void |
f0ba3972 PA |
1436 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1437 | const gdb_byte *writebuf_org, | |
1438 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1439 | { |
4a64f543 MS |
1440 | /* Left boundary, right boundary and median element of our binary |
1441 | search. */ | |
876fa593 JK |
1442 | unsigned bc_l, bc_r, bc; |
1443 | ||
4a64f543 MS |
1444 | /* Find BC_L which is a leftmost element which may affect BUF |
1445 | content. It is safe to report lower value but a failure to | |
1446 | report higher one. */ | |
876fa593 JK |
1447 | |
1448 | bc_l = 0; | |
1449 | bc_r = bp_location_count; | |
1450 | while (bc_l + 1 < bc_r) | |
1451 | { | |
35df4500 | 1452 | struct bp_location *bl; |
876fa593 JK |
1453 | |
1454 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1455 | bl = bp_location[bc]; |
876fa593 | 1456 | |
4a64f543 MS |
1457 | /* Check first BL->ADDRESS will not overflow due to the added |
1458 | constant. Then advance the left boundary only if we are sure | |
1459 | the BC element can in no way affect the BUF content (MEMADDR | |
1460 | to MEMADDR + LEN range). | |
876fa593 | 1461 | |
4a64f543 MS |
1462 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1463 | offset so that we cannot miss a breakpoint with its shadow | |
1464 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1465 | |
35df4500 TJB |
1466 | if ((bl->address + bp_location_shadow_len_after_address_max |
1467 | >= bl->address) | |
1468 | && (bl->address + bp_location_shadow_len_after_address_max | |
1469 | <= memaddr)) | |
876fa593 JK |
1470 | bc_l = bc; |
1471 | else | |
1472 | bc_r = bc; | |
1473 | } | |
1474 | ||
128070bb PA |
1475 | /* Due to the binary search above, we need to make sure we pick the |
1476 | first location that's at BC_L's address. E.g., if there are | |
1477 | multiple locations at the same address, BC_L may end up pointing | |
1478 | at a duplicate location, and miss the "master"/"inserted" | |
1479 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1480 | B: | |
1481 | ||
1482 | L1@A, L2@A, L3@B, ... | |
1483 | ||
1484 | BC_L could end up pointing at location L2, while the "master" | |
1485 | location could be L1. Since the `loc->inserted' flag is only set | |
1486 | on "master" locations, we'd forget to restore the shadow of L1 | |
1487 | and L2. */ | |
1488 | while (bc_l > 0 | |
1489 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1490 | bc_l--; | |
1491 | ||
876fa593 JK |
1492 | /* Now do full processing of the found relevant range of elements. */ |
1493 | ||
1494 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1495 | { |
35df4500 | 1496 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1497 | CORE_ADDR bp_addr = 0; |
1498 | int bp_size = 0; | |
1499 | int bptoffset = 0; | |
1500 | ||
35df4500 TJB |
1501 | /* bp_location array has BL->OWNER always non-NULL. */ |
1502 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1503 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1504 | bl->owner->number); |
ffce0d52 | 1505 | |
e5dd4106 | 1506 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1507 | content. */ |
1508 | ||
35df4500 TJB |
1509 | if (bl->address >= bp_location_placed_address_before_address_max |
1510 | && memaddr + len <= (bl->address | |
1511 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1512 | break; |
1513 | ||
35df4500 | 1514 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1515 | continue; |
35df4500 | 1516 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1517 | current_program_space->aspace, 0)) |
1518 | continue; | |
1519 | ||
c5aa993b JM |
1520 | /* Addresses and length of the part of the breakpoint that |
1521 | we need to copy. */ | |
35df4500 TJB |
1522 | bp_addr = bl->target_info.placed_address; |
1523 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1524 | |
c5aa993b JM |
1525 | if (bp_addr + bp_size <= memaddr) |
1526 | /* The breakpoint is entirely before the chunk of memory we | |
1527 | are reading. */ | |
1528 | continue; | |
8defab1a | 1529 | |
c5aa993b JM |
1530 | if (bp_addr >= memaddr + len) |
1531 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1532 | reading. */ |
c5aa993b | 1533 | continue; |
c5aa993b | 1534 | |
8defab1a DJ |
1535 | /* Offset within shadow_contents. */ |
1536 | if (bp_addr < memaddr) | |
1537 | { | |
1538 | /* Only copy the second part of the breakpoint. */ | |
1539 | bp_size -= memaddr - bp_addr; | |
1540 | bptoffset = memaddr - bp_addr; | |
1541 | bp_addr = memaddr; | |
1542 | } | |
c5aa993b | 1543 | |
8defab1a DJ |
1544 | if (bp_addr + bp_size > memaddr + len) |
1545 | { | |
1546 | /* Only copy the first part of the breakpoint. */ | |
1547 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1548 | } | |
c5aa993b | 1549 | |
f0ba3972 PA |
1550 | if (readbuf != NULL) |
1551 | { | |
35c63cd8 JB |
1552 | /* Verify that the readbuf buffer does not overlap with |
1553 | the shadow_contents buffer. */ | |
1554 | gdb_assert (bl->target_info.shadow_contents >= readbuf + len | |
1555 | || readbuf >= (bl->target_info.shadow_contents | |
1556 | + bl->target_info.shadow_len)); | |
1557 | ||
f0ba3972 PA |
1558 | /* Update the read buffer with this inserted breakpoint's |
1559 | shadow. */ | |
1560 | memcpy (readbuf + bp_addr - memaddr, | |
1561 | bl->target_info.shadow_contents + bptoffset, bp_size); | |
1562 | } | |
1563 | else | |
1564 | { | |
1565 | struct gdbarch *gdbarch = bl->gdbarch; | |
1566 | const unsigned char *bp; | |
1567 | CORE_ADDR placed_address = bl->target_info.placed_address; | |
1568 | unsigned placed_size = bl->target_info.placed_size; | |
1569 | ||
1570 | /* Update the shadow with what we want to write to memory. */ | |
1571 | memcpy (bl->target_info.shadow_contents + bptoffset, | |
1572 | writebuf_org + bp_addr - memaddr, bp_size); | |
1573 | ||
1574 | /* Determine appropriate breakpoint contents and size for this | |
1575 | address. */ | |
1576 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1577 | ||
1578 | /* Update the final write buffer with this inserted | |
1579 | breakpoint's INSN. */ | |
1580 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1581 | } | |
c5aa993b | 1582 | } |
c906108c | 1583 | } |
c906108c | 1584 | \f |
c5aa993b | 1585 | |
b775012e LM |
1586 | /* Return true if BPT is either a software breakpoint or a hardware |
1587 | breakpoint. */ | |
1588 | ||
1589 | int | |
1590 | is_breakpoint (const struct breakpoint *bpt) | |
1591 | { | |
1592 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1593 | || bpt->type == bp_hardware_breakpoint |
1594 | || bpt->type == bp_dprintf); | |
b775012e LM |
1595 | } |
1596 | ||
60e1c644 PA |
1597 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1598 | ||
a5606eee | 1599 | static int |
d77f58be | 1600 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1601 | { |
1602 | return (bpt->type == bp_hardware_watchpoint | |
1603 | || bpt->type == bp_read_watchpoint | |
1604 | || bpt->type == bp_access_watchpoint); | |
1605 | } | |
7270d8f2 | 1606 | |
60e1c644 PA |
1607 | /* Return true if BPT is of any watchpoint kind, hardware or |
1608 | software. */ | |
1609 | ||
3a5c3e22 | 1610 | int |
d77f58be | 1611 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1612 | { |
1613 | return (is_hardware_watchpoint (bpt) | |
1614 | || bpt->type == bp_watchpoint); | |
1615 | } | |
1616 | ||
3a5c3e22 PA |
1617 | /* Returns true if the current thread and its running state are safe |
1618 | to evaluate or update watchpoint B. Watchpoints on local | |
1619 | expressions need to be evaluated in the context of the thread that | |
1620 | was current when the watchpoint was created, and, that thread needs | |
1621 | to be stopped to be able to select the correct frame context. | |
1622 | Watchpoints on global expressions can be evaluated on any thread, | |
1623 | and in any state. It is presently left to the target allowing | |
1624 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1625 | |
1626 | static int | |
3a5c3e22 | 1627 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1628 | { |
d0d8b0c6 JK |
1629 | return (b->base.pspace == current_program_space |
1630 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1631 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1632 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1633 | } |
1634 | ||
d0fb5eae JK |
1635 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1636 | associated bp_watchpoint_scope breakpoint. */ | |
1637 | ||
1638 | static void | |
3a5c3e22 | 1639 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1640 | { |
3a5c3e22 | 1641 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1642 | |
1643 | if (b->related_breakpoint != b) | |
1644 | { | |
1645 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1646 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1647 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1648 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1649 | b->related_breakpoint = b; | |
1650 | } | |
1651 | b->disposition = disp_del_at_next_stop; | |
1652 | } | |
1653 | ||
567e1b4e JB |
1654 | /* Assuming that B is a watchpoint: |
1655 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1656 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1657 | - Evaluate the condition if there is one, and store the result |
1658 | in b->loc->cond. | |
a5606eee VP |
1659 | - Update the list of values that must be watched in B->loc. |
1660 | ||
4a64f543 MS |
1661 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1662 | nothing. If this is local watchpoint that is out of scope, delete | |
1663 | it. | |
1664 | ||
1665 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1666 | removed + inserted on each stop here. Normal breakpoints must | |
1667 | never be removed because they might be missed by a running thread | |
1668 | when debugging in non-stop mode. On the other hand, hardware | |
1669 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1670 | to each LWP since they are stored in each LWP's hardware debug | |
1671 | registers. Therefore, such LWP must be stopped first in order to | |
1672 | be able to modify its hardware watchpoints. | |
1673 | ||
1674 | Hardware watchpoints must be reset exactly once after being | |
1675 | presented to the user. It cannot be done sooner, because it would | |
1676 | reset the data used to present the watchpoint hit to the user. And | |
1677 | it must not be done later because it could display the same single | |
1678 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1679 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1680 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1681 | not user-visible - its hit is suppressed if the memory content has | |
1682 | not changed. | |
1683 | ||
1684 | The following constraints influence the location where we can reset | |
1685 | hardware watchpoints: | |
1686 | ||
1687 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1688 | called several times when GDB stops. | |
1689 | ||
1690 | [linux] | |
1691 | * Multiple hardware watchpoints can be hit at the same time, | |
1692 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1693 | hit at a time as the reason for stopping, and all the other hits | |
1694 | are presented later, one after the other, each time the user | |
1695 | requests the execution to be resumed. Execution is not resumed | |
1696 | for the threads still having pending hit event stored in | |
1697 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1698 | the inferior on the first stop the thread hit event is kept being | |
1699 | reported from its cached value by linux_nat_stopped_data_address | |
1700 | until the real thread resume happens after the watchpoint gets | |
1701 | presented and thus its LWP_INFO->STATUS gets reset. | |
1702 | ||
1703 | Therefore the hardware watchpoint hit can get safely reset on the | |
1704 | watchpoint removal from inferior. */ | |
a79d3c27 | 1705 | |
b40ce68a | 1706 | static void |
3a5c3e22 | 1707 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1708 | { |
a5606eee | 1709 | int within_current_scope; |
a5606eee | 1710 | struct frame_id saved_frame_id; |
66076460 | 1711 | int frame_saved; |
a5606eee | 1712 | |
f6bc2008 PA |
1713 | /* If this is a local watchpoint, we only want to check if the |
1714 | watchpoint frame is in scope if the current thread is the thread | |
1715 | that was used to create the watchpoint. */ | |
1716 | if (!watchpoint_in_thread_scope (b)) | |
1717 | return; | |
1718 | ||
3a5c3e22 | 1719 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1720 | return; |
1721 | ||
66076460 | 1722 | frame_saved = 0; |
a5606eee VP |
1723 | |
1724 | /* Determine if the watchpoint is within scope. */ | |
1725 | if (b->exp_valid_block == NULL) | |
1726 | within_current_scope = 1; | |
1727 | else | |
1728 | { | |
b5db5dfc UW |
1729 | struct frame_info *fi = get_current_frame (); |
1730 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1731 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1732 | ||
1733 | /* If we're in a function epilogue, unwinding may not work | |
1734 | properly, so do not attempt to recreate locations at this | |
1735 | point. See similar comments in watchpoint_check. */ | |
1736 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1737 | return; | |
66076460 DJ |
1738 | |
1739 | /* Save the current frame's ID so we can restore it after | |
1740 | evaluating the watchpoint expression on its own frame. */ | |
1741 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1742 | took a frame parameter, so that we didn't have to change the | |
1743 | selected frame. */ | |
1744 | frame_saved = 1; | |
1745 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1746 | ||
a5606eee VP |
1747 | fi = frame_find_by_id (b->watchpoint_frame); |
1748 | within_current_scope = (fi != NULL); | |
1749 | if (within_current_scope) | |
1750 | select_frame (fi); | |
1751 | } | |
1752 | ||
b5db5dfc UW |
1753 | /* We don't free locations. They are stored in the bp_location array |
1754 | and update_global_location_list will eventually delete them and | |
1755 | remove breakpoints if needed. */ | |
3a5c3e22 | 1756 | b->base.loc = NULL; |
b5db5dfc | 1757 | |
a5606eee VP |
1758 | if (within_current_scope && reparse) |
1759 | { | |
1760 | char *s; | |
d63d0675 | 1761 | |
a5606eee VP |
1762 | if (b->exp) |
1763 | { | |
1764 | xfree (b->exp); | |
1765 | b->exp = NULL; | |
1766 | } | |
d63d0675 | 1767 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1768 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1769 | /* If the meaning of expression itself changed, the old value is |
1770 | no longer relevant. We don't want to report a watchpoint hit | |
1771 | to the user when the old value and the new value may actually | |
1772 | be completely different objects. */ | |
1773 | value_free (b->val); | |
fa4727a6 DJ |
1774 | b->val = NULL; |
1775 | b->val_valid = 0; | |
60e1c644 PA |
1776 | |
1777 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1778 | expression is stored in the breakpoint object, not in the | |
1779 | locations (re)created below. */ | |
3a5c3e22 | 1780 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1781 | { |
1782 | if (b->cond_exp != NULL) | |
1783 | { | |
1784 | xfree (b->cond_exp); | |
1785 | b->cond_exp = NULL; | |
1786 | } | |
1787 | ||
3a5c3e22 | 1788 | s = b->base.cond_string; |
1bb9788d | 1789 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1790 | } |
a5606eee | 1791 | } |
a5606eee VP |
1792 | |
1793 | /* If we failed to parse the expression, for example because | |
1794 | it refers to a global variable in a not-yet-loaded shared library, | |
1795 | don't try to insert watchpoint. We don't automatically delete | |
1796 | such watchpoint, though, since failure to parse expression | |
1797 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1798 | if ( !target_has_execution) |
1799 | { | |
1800 | /* Without execution, memory can't change. No use to try and | |
1801 | set watchpoint locations. The watchpoint will be reset when | |
1802 | the target gains execution, through breakpoint_re_set. */ | |
1803 | } | |
1804 | else if (within_current_scope && b->exp) | |
a5606eee | 1805 | { |
0cf6dd15 | 1806 | int pc = 0; |
fa4727a6 | 1807 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1808 | struct program_space *frame_pspace; |
a5606eee | 1809 | |
0cf6dd15 | 1810 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1811 | |
a5606eee VP |
1812 | /* Avoid setting b->val if it's already set. The meaning of |
1813 | b->val is 'the last value' user saw, and we should update | |
1814 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1815 | happens, the code that reports it updates b->val directly. |
1816 | We don't keep track of the memory value for masked | |
1817 | watchpoints. */ | |
3a5c3e22 | 1818 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1819 | { |
1820 | b->val = v; | |
1821 | b->val_valid = 1; | |
1822 | } | |
a5606eee | 1823 | |
2d134ed3 PA |
1824 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1825 | ||
a5606eee | 1826 | /* Look at each value on the value chain. */ |
9fa40276 | 1827 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1828 | { |
1829 | /* If it's a memory location, and GDB actually needed | |
1830 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1831 | must watch it. If the first value returned is |
1832 | still lazy, that means an error occurred reading it; | |
1833 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1834 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1835 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1836 | { |
1837 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1838 | |
a5606eee VP |
1839 | /* We only watch structs and arrays if user asked |
1840 | for it explicitly, never if they just happen to | |
1841 | appear in the middle of some value chain. */ | |
fa4727a6 | 1842 | if (v == result |
a5606eee VP |
1843 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1844 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1845 | { | |
1846 | CORE_ADDR addr; | |
1847 | int len, type; | |
1848 | struct bp_location *loc, **tmp; | |
1849 | ||
42ae5230 | 1850 | addr = value_address (v); |
a5606eee VP |
1851 | len = TYPE_LENGTH (value_type (v)); |
1852 | type = hw_write; | |
3a5c3e22 | 1853 | if (b->base.type == bp_read_watchpoint) |
a5606eee | 1854 | type = hw_read; |
3a5c3e22 | 1855 | else if (b->base.type == bp_access_watchpoint) |
a5606eee | 1856 | type = hw_access; |
3a5c3e22 PA |
1857 | |
1858 | loc = allocate_bp_location (&b->base); | |
1859 | for (tmp = &(b->base.loc); *tmp != NULL; tmp = &((*tmp)->next)) | |
a5606eee VP |
1860 | ; |
1861 | *tmp = loc; | |
a6d9a66e | 1862 | loc->gdbarch = get_type_arch (value_type (v)); |
6c95b8df PA |
1863 | |
1864 | loc->pspace = frame_pspace; | |
a5606eee VP |
1865 | loc->address = addr; |
1866 | loc->length = len; | |
1867 | loc->watchpoint_type = type; | |
1868 | } | |
1869 | } | |
9fa40276 TJB |
1870 | } |
1871 | ||
1872 | /* Change the type of breakpoint between hardware assisted or | |
1873 | an ordinary watchpoint depending on the hardware support | |
1874 | and free hardware slots. REPARSE is set when the inferior | |
1875 | is started. */ | |
a9634178 | 1876 | if (reparse) |
9fa40276 | 1877 | { |
e09342b5 | 1878 | int reg_cnt; |
9fa40276 TJB |
1879 | enum bp_loc_type loc_type; |
1880 | struct bp_location *bl; | |
a5606eee | 1881 | |
a9634178 | 1882 | reg_cnt = can_use_hardware_watchpoint (val_chain); |
e09342b5 TJB |
1883 | |
1884 | if (reg_cnt) | |
9fa40276 TJB |
1885 | { |
1886 | int i, target_resources_ok, other_type_used; | |
a1398e0c | 1887 | enum bptype type; |
9fa40276 | 1888 | |
a9634178 TJB |
1889 | /* Use an exact watchpoint when there's only one memory region to be |
1890 | watched, and only one debug register is needed to watch it. */ | |
1891 | b->exact = target_exact_watchpoints && reg_cnt == 1; | |
1892 | ||
9fa40276 | 1893 | /* We need to determine how many resources are already |
e09342b5 TJB |
1894 | used for all other hardware watchpoints plus this one |
1895 | to see if we still have enough resources to also fit | |
a1398e0c PA |
1896 | this watchpoint in as well. */ |
1897 | ||
1898 | /* If this is a software watchpoint, we try to turn it | |
1899 | to a hardware one -- count resources as if B was of | |
1900 | hardware watchpoint type. */ | |
1901 | type = b->base.type; | |
1902 | if (type == bp_watchpoint) | |
1903 | type = bp_hardware_watchpoint; | |
1904 | ||
1905 | /* This watchpoint may or may not have been placed on | |
1906 | the list yet at this point (it won't be in the list | |
1907 | if we're trying to create it for the first time, | |
1908 | through watch_command), so always account for it | |
1909 | manually. */ | |
1910 | ||
1911 | /* Count resources used by all watchpoints except B. */ | |
1912 | i = hw_watchpoint_used_count_others (&b->base, type, &other_type_used); | |
1913 | ||
1914 | /* Add in the resources needed for B. */ | |
1915 | i += hw_watchpoint_use_count (&b->base); | |
1916 | ||
1917 | target_resources_ok | |
1918 | = target_can_use_hardware_watchpoint (type, i, other_type_used); | |
e09342b5 | 1919 | if (target_resources_ok <= 0) |
a9634178 | 1920 | { |
3a5c3e22 | 1921 | int sw_mode = b->base.ops->works_in_software_mode (&b->base); |
9c06b0b4 TJB |
1922 | |
1923 | if (target_resources_ok == 0 && !sw_mode) | |
a9634178 TJB |
1924 | error (_("Target does not support this type of " |
1925 | "hardware watchpoint.")); | |
9c06b0b4 TJB |
1926 | else if (target_resources_ok < 0 && !sw_mode) |
1927 | error (_("There are not enough available hardware " | |
1928 | "resources for this watchpoint.")); | |
a1398e0c PA |
1929 | |
1930 | /* Downgrade to software watchpoint. */ | |
1931 | b->base.type = bp_watchpoint; | |
1932 | } | |
1933 | else | |
1934 | { | |
1935 | /* If this was a software watchpoint, we've just | |
1936 | found we have enough resources to turn it to a | |
1937 | hardware watchpoint. Otherwise, this is a | |
1938 | nop. */ | |
1939 | b->base.type = type; | |
a9634178 | 1940 | } |
9fa40276 | 1941 | } |
3a5c3e22 | 1942 | else if (!b->base.ops->works_in_software_mode (&b->base)) |
a9634178 TJB |
1943 | error (_("Expression cannot be implemented with " |
1944 | "read/access watchpoint.")); | |
9fa40276 | 1945 | else |
3a5c3e22 | 1946 | b->base.type = bp_watchpoint; |
9fa40276 | 1947 | |
3a5c3e22 | 1948 | loc_type = (b->base.type == bp_watchpoint? bp_loc_other |
9fa40276 | 1949 | : bp_loc_hardware_watchpoint); |
3a5c3e22 | 1950 | for (bl = b->base.loc; bl; bl = bl->next) |
9fa40276 TJB |
1951 | bl->loc_type = loc_type; |
1952 | } | |
1953 | ||
1954 | for (v = val_chain; v; v = next) | |
1955 | { | |
a5606eee VP |
1956 | next = value_next (v); |
1957 | if (v != b->val) | |
1958 | value_free (v); | |
1959 | } | |
1960 | ||
c7437ca6 PA |
1961 | /* If a software watchpoint is not watching any memory, then the |
1962 | above left it without any location set up. But, | |
1963 | bpstat_stop_status requires a location to be able to report | |
1964 | stops, so make sure there's at least a dummy one. */ | |
3a5c3e22 | 1965 | if (b->base.type == bp_watchpoint && b->base.loc == NULL) |
c7437ca6 | 1966 | { |
3a5c3e22 PA |
1967 | struct breakpoint *base = &b->base; |
1968 | base->loc = allocate_bp_location (base); | |
1969 | base->loc->pspace = frame_pspace; | |
1970 | base->loc->address = -1; | |
1971 | base->loc->length = -1; | |
1972 | base->loc->watchpoint_type = -1; | |
c7437ca6 | 1973 | } |
a5606eee VP |
1974 | } |
1975 | else if (!within_current_scope) | |
7270d8f2 | 1976 | { |
ac74f770 MS |
1977 | printf_filtered (_("\ |
1978 | Watchpoint %d deleted because the program has left the block\n\ | |
1979 | in which its expression is valid.\n"), | |
3a5c3e22 | 1980 | b->base.number); |
d0fb5eae | 1981 | watchpoint_del_at_next_stop (b); |
7270d8f2 | 1982 | } |
a5606eee VP |
1983 | |
1984 | /* Restore the selected frame. */ | |
66076460 DJ |
1985 | if (frame_saved) |
1986 | select_frame (frame_find_by_id (saved_frame_id)); | |
7270d8f2 OF |
1987 | } |
1988 | ||
a5606eee | 1989 | |
74960c60 | 1990 | /* Returns 1 iff breakpoint location should be |
1e4d1764 YQ |
1991 | inserted in the inferior. We don't differentiate the type of BL's owner |
1992 | (breakpoint vs. tracepoint), although insert_location in tracepoint's | |
1993 | breakpoint_ops is not defined, because in insert_bp_location, | |
1994 | tracepoint's insert_location will not be called. */ | |
74960c60 | 1995 | static int |
35df4500 | 1996 | should_be_inserted (struct bp_location *bl) |
74960c60 | 1997 | { |
35df4500 | 1998 | if (bl->owner == NULL || !breakpoint_enabled (bl->owner)) |
74960c60 VP |
1999 | return 0; |
2000 | ||
35df4500 | 2001 | if (bl->owner->disposition == disp_del_at_next_stop) |
74960c60 VP |
2002 | return 0; |
2003 | ||
35df4500 | 2004 | if (!bl->enabled || bl->shlib_disabled || bl->duplicate) |
74960c60 VP |
2005 | return 0; |
2006 | ||
f8eba3c6 TT |
2007 | if (user_breakpoint_p (bl->owner) && bl->pspace->executing_startup) |
2008 | return 0; | |
2009 | ||
56710373 PA |
2010 | /* This is set for example, when we're attached to the parent of a |
2011 | vfork, and have detached from the child. The child is running | |
2012 | free, and we expect it to do an exec or exit, at which point the | |
2013 | OS makes the parent schedulable again (and the target reports | |
2014 | that the vfork is done). Until the child is done with the shared | |
2015 | memory region, do not insert breakpoints in the parent, otherwise | |
2016 | the child could still trip on the parent's breakpoints. Since | |
2017 | the parent is blocked anyway, it won't miss any breakpoint. */ | |
35df4500 | 2018 | if (bl->pspace->breakpoints_not_allowed) |
56710373 PA |
2019 | return 0; |
2020 | ||
74960c60 VP |
2021 | return 1; |
2022 | } | |
2023 | ||
934709f0 PW |
2024 | /* Same as should_be_inserted but does the check assuming |
2025 | that the location is not duplicated. */ | |
2026 | ||
2027 | static int | |
2028 | unduplicated_should_be_inserted (struct bp_location *bl) | |
2029 | { | |
2030 | int result; | |
2031 | const int save_duplicate = bl->duplicate; | |
2032 | ||
2033 | bl->duplicate = 0; | |
2034 | result = should_be_inserted (bl); | |
2035 | bl->duplicate = save_duplicate; | |
2036 | return result; | |
2037 | } | |
2038 | ||
b775012e LM |
2039 | /* Parses a conditional described by an expression COND into an |
2040 | agent expression bytecode suitable for evaluation | |
2041 | by the bytecode interpreter. Return NULL if there was | |
2042 | any error during parsing. */ | |
2043 | ||
2044 | static struct agent_expr * | |
2045 | parse_cond_to_aexpr (CORE_ADDR scope, struct expression *cond) | |
2046 | { | |
2047 | struct agent_expr *aexpr = NULL; | |
2048 | struct cleanup *old_chain = NULL; | |
2049 | volatile struct gdb_exception ex; | |
2050 | ||
2051 | if (!cond) | |
2052 | return NULL; | |
2053 | ||
2054 | /* We don't want to stop processing, so catch any errors | |
2055 | that may show up. */ | |
2056 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2057 | { | |
2058 | aexpr = gen_eval_for_expr (scope, cond); | |
2059 | } | |
2060 | ||
2061 | if (ex.reason < 0) | |
2062 | { | |
2063 | /* If we got here, it means the condition could not be parsed to a valid | |
2064 | bytecode expression and thus can't be evaluated on the target's side. | |
2065 | It's no use iterating through the conditions. */ | |
2066 | return NULL; | |
2067 | } | |
2068 | ||
2069 | /* We have a valid agent expression. */ | |
2070 | return aexpr; | |
2071 | } | |
2072 | ||
2073 | /* Based on location BL, create a list of breakpoint conditions to be | |
2074 | passed on to the target. If we have duplicated locations with different | |
2075 | conditions, we will add such conditions to the list. The idea is that the | |
2076 | target will evaluate the list of conditions and will only notify GDB when | |
2077 | one of them is true. */ | |
2078 | ||
2079 | static void | |
2080 | build_target_condition_list (struct bp_location *bl) | |
2081 | { | |
2082 | struct bp_location **locp = NULL, **loc2p; | |
2083 | int null_condition_or_parse_error = 0; | |
2084 | int modified = bl->needs_update; | |
2085 | struct bp_location *loc; | |
2086 | ||
2087 | /* This is only meaningful if the target is | |
2088 | evaluating conditions and if the user has | |
2089 | opted for condition evaluation on the target's | |
2090 | side. */ | |
2091 | if (gdb_evaluates_breakpoint_condition_p () | |
2092 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2093 | return; | |
2094 | ||
2095 | /* Do a first pass to check for locations with no assigned | |
2096 | conditions or conditions that fail to parse to a valid agent expression | |
2097 | bytecode. If any of these happen, then it's no use to send conditions | |
2098 | to the target since this location will always trigger and generate a | |
2099 | response back to GDB. */ | |
2100 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2101 | { | |
2102 | loc = (*loc2p); | |
2103 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2104 | { | |
2105 | if (modified) | |
2106 | { | |
2107 | struct agent_expr *aexpr; | |
2108 | ||
2109 | /* Re-parse the conditions since something changed. In that | |
2110 | case we already freed the condition bytecodes (see | |
2111 | force_breakpoint_reinsertion). We just | |
2112 | need to parse the condition to bytecodes again. */ | |
2113 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2114 | loc->cond_bytecode = aexpr; | |
2115 | ||
2116 | /* Check if we managed to parse the conditional expression | |
2117 | correctly. If not, we will not send this condition | |
2118 | to the target. */ | |
2119 | if (aexpr) | |
2120 | continue; | |
2121 | } | |
2122 | ||
2123 | /* If we have a NULL bytecode expression, it means something | |
2124 | went wrong or we have a null condition expression. */ | |
2125 | if (!loc->cond_bytecode) | |
2126 | { | |
2127 | null_condition_or_parse_error = 1; | |
2128 | break; | |
2129 | } | |
2130 | } | |
2131 | } | |
2132 | ||
2133 | /* If any of these happened, it means we will have to evaluate the conditions | |
2134 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2135 | for all the other duplicate locations, thus we free all of them here. | |
2136 | ||
2137 | This is so we have a finer control over which locations' conditions are | |
2138 | being evaluated by GDB or the remote stub. */ | |
2139 | if (null_condition_or_parse_error) | |
2140 | { | |
2141 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2142 | { | |
2143 | loc = (*loc2p); | |
2144 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2145 | { | |
2146 | /* Only go as far as the first NULL bytecode is | |
2147 | located. */ | |
2148 | if (!loc->cond_bytecode) | |
2149 | return; | |
2150 | ||
2151 | free_agent_expr (loc->cond_bytecode); | |
2152 | loc->cond_bytecode = NULL; | |
2153 | } | |
2154 | } | |
2155 | } | |
2156 | ||
2157 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2158 | for this location's address. */ | |
2159 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2160 | { | |
2161 | loc = (*loc2p); | |
2162 | if (loc->cond | |
2163 | && is_breakpoint (loc->owner) | |
2164 | && loc->pspace->num == bl->pspace->num | |
2165 | && loc->owner->enable_state == bp_enabled | |
2166 | && loc->enabled) | |
2167 | /* Add the condition to the vector. This will be used later to send the | |
2168 | conditions to the target. */ | |
2169 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2170 | loc->cond_bytecode); | |
2171 | } | |
2172 | ||
2173 | return; | |
2174 | } | |
2175 | ||
d3ce09f5 SS |
2176 | /* Parses a command described by string CMD into an agent expression |
2177 | bytecode suitable for evaluation by the bytecode interpreter. | |
2178 | Return NULL if there was any error during parsing. */ | |
2179 | ||
2180 | static struct agent_expr * | |
2181 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) | |
2182 | { | |
2183 | struct cleanup *old_cleanups = 0; | |
2184 | struct expression *expr, **argvec; | |
2185 | struct agent_expr *aexpr = NULL; | |
2186 | struct cleanup *old_chain = NULL; | |
2187 | volatile struct gdb_exception ex; | |
2188 | char *cmdrest; | |
2189 | char *format_start, *format_end; | |
2190 | struct format_piece *fpieces; | |
2191 | int nargs; | |
2192 | struct gdbarch *gdbarch = get_current_arch (); | |
2193 | ||
2194 | if (!cmd) | |
2195 | return NULL; | |
2196 | ||
2197 | cmdrest = cmd; | |
2198 | ||
2199 | if (*cmdrest == ',') | |
2200 | ++cmdrest; | |
2201 | cmdrest = skip_spaces (cmdrest); | |
2202 | ||
2203 | if (*cmdrest++ != '"') | |
2204 | error (_("No format string following the location")); | |
2205 | ||
2206 | format_start = cmdrest; | |
2207 | ||
2208 | fpieces = parse_format_string (&cmdrest); | |
2209 | ||
2210 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2211 | ||
2212 | format_end = cmdrest; | |
2213 | ||
2214 | if (*cmdrest++ != '"') | |
2215 | error (_("Bad format string, non-terminated '\"'.")); | |
2216 | ||
2217 | cmdrest = skip_spaces (cmdrest); | |
2218 | ||
2219 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2220 | error (_("Invalid argument syntax")); | |
2221 | ||
2222 | if (*cmdrest == ',') | |
2223 | cmdrest++; | |
2224 | cmdrest = skip_spaces (cmdrest); | |
2225 | ||
2226 | /* For each argument, make an expression. */ | |
2227 | ||
2228 | argvec = (struct expression **) alloca (strlen (cmd) | |
2229 | * sizeof (struct expression *)); | |
2230 | ||
2231 | nargs = 0; | |
2232 | while (*cmdrest != '\0') | |
2233 | { | |
2234 | char *cmd1; | |
2235 | ||
2236 | cmd1 = cmdrest; | |
2237 | expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); | |
2238 | argvec[nargs++] = expr; | |
2239 | cmdrest = cmd1; | |
2240 | if (*cmdrest == ',') | |
2241 | ++cmdrest; | |
2242 | } | |
2243 | ||
2244 | /* We don't want to stop processing, so catch any errors | |
2245 | that may show up. */ | |
2246 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2247 | { | |
2248 | aexpr = gen_printf (scope, gdbarch, 0, 0, | |
2249 | format_start, format_end - format_start, | |
2250 | fpieces, nargs, argvec); | |
2251 | } | |
2252 | ||
2253 | if (ex.reason < 0) | |
2254 | { | |
2255 | /* If we got here, it means the command could not be parsed to a valid | |
2256 | bytecode expression and thus can't be evaluated on the target's side. | |
2257 | It's no use iterating through the other commands. */ | |
2258 | return NULL; | |
2259 | } | |
2260 | ||
2261 | do_cleanups (old_cleanups); | |
2262 | ||
2263 | /* We have a valid agent expression, return it. */ | |
2264 | return aexpr; | |
2265 | } | |
2266 | ||
2267 | /* Based on location BL, create a list of breakpoint commands to be | |
2268 | passed on to the target. If we have duplicated locations with | |
2269 | different commands, we will add any such to the list. */ | |
2270 | ||
2271 | static void | |
2272 | build_target_command_list (struct bp_location *bl) | |
2273 | { | |
2274 | struct bp_location **locp = NULL, **loc2p; | |
2275 | int null_command_or_parse_error = 0; | |
2276 | int modified = bl->needs_update; | |
2277 | struct bp_location *loc; | |
2278 | ||
2279 | /* For now, limit to agent-style dprintf breakpoints. */ | |
2280 | if (bl->owner->type != bp_dprintf | |
2281 | || strcmp (dprintf_style, dprintf_style_agent) != 0) | |
2282 | return; | |
2283 | ||
2284 | if (!target_can_run_breakpoint_commands ()) | |
2285 | return; | |
2286 | ||
2287 | /* Do a first pass to check for locations with no assigned | |
2288 | conditions or conditions that fail to parse to a valid agent expression | |
2289 | bytecode. If any of these happen, then it's no use to send conditions | |
2290 | to the target since this location will always trigger and generate a | |
2291 | response back to GDB. */ | |
2292 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2293 | { | |
2294 | loc = (*loc2p); | |
2295 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2296 | { | |
2297 | if (modified) | |
2298 | { | |
2299 | struct agent_expr *aexpr; | |
2300 | ||
2301 | /* Re-parse the commands since something changed. In that | |
2302 | case we already freed the command bytecodes (see | |
2303 | force_breakpoint_reinsertion). We just | |
2304 | need to parse the command to bytecodes again. */ | |
2305 | aexpr = parse_cmd_to_aexpr (bl->address, | |
2306 | loc->owner->extra_string); | |
2307 | loc->cmd_bytecode = aexpr; | |
2308 | ||
2309 | if (!aexpr) | |
2310 | continue; | |
2311 | } | |
2312 | ||
2313 | /* If we have a NULL bytecode expression, it means something | |
2314 | went wrong or we have a null command expression. */ | |
2315 | if (!loc->cmd_bytecode) | |
2316 | { | |
2317 | null_command_or_parse_error = 1; | |
2318 | break; | |
2319 | } | |
2320 | } | |
2321 | } | |
2322 | ||
2323 | /* If anything failed, then we're not doing target-side commands, | |
2324 | and so clean up. */ | |
2325 | if (null_command_or_parse_error) | |
2326 | { | |
2327 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2328 | { | |
2329 | loc = (*loc2p); | |
2330 | if (is_breakpoint (loc->owner) | |
2331 | && loc->pspace->num == bl->pspace->num) | |
2332 | { | |
2333 | /* Only go as far as the first NULL bytecode is | |
2334 | located. */ | |
2335 | if (!loc->cond_bytecode) | |
2336 | return; | |
2337 | ||
2338 | free_agent_expr (loc->cond_bytecode); | |
2339 | loc->cond_bytecode = NULL; | |
2340 | } | |
2341 | } | |
2342 | } | |
2343 | ||
2344 | /* No NULL commands or failed bytecode generation. Build a command list | |
2345 | for this location's address. */ | |
2346 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2347 | { | |
2348 | loc = (*loc2p); | |
2349 | if (loc->owner->extra_string | |
2350 | && is_breakpoint (loc->owner) | |
2351 | && loc->pspace->num == bl->pspace->num | |
2352 | && loc->owner->enable_state == bp_enabled | |
2353 | && loc->enabled) | |
2354 | /* Add the command to the vector. This will be used later | |
2355 | to send the commands to the target. */ | |
2356 | VEC_safe_push (agent_expr_p, bl->target_info.tcommands, | |
2357 | loc->cmd_bytecode); | |
2358 | } | |
2359 | ||
2360 | bl->target_info.persist = 0; | |
2361 | /* Maybe flag this location as persistent. */ | |
2362 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2363 | bl->target_info.persist = 1; | |
2364 | } | |
2365 | ||
35df4500 TJB |
2366 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2367 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2368 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2369 | Returns 0 for success, 1 if the bp_location type is not supported or |
2370 | -1 for failure. | |
879bfdc2 | 2371 | |
4a64f543 MS |
2372 | NOTE drow/2003-09-09: This routine could be broken down to an |
2373 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2374 | static int |
35df4500 | 2375 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2376 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2377 | int *disabled_breaks, |
26bb91f3 | 2378 | int *hw_breakpoint_error) |
879bfdc2 DJ |
2379 | { |
2380 | int val = 0; | |
2381 | ||
b775012e | 2382 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2383 | return 0; |
2384 | ||
35c63cd8 JB |
2385 | /* Note we don't initialize bl->target_info, as that wipes out |
2386 | the breakpoint location's shadow_contents if the breakpoint | |
2387 | is still inserted at that location. This in turn breaks | |
2388 | target_read_memory which depends on these buffers when | |
2389 | a memory read is requested at the breakpoint location: | |
2390 | Once the target_info has been wiped, we fail to see that | |
2391 | we have a breakpoint inserted at that address and thus | |
2392 | read the breakpoint instead of returning the data saved in | |
2393 | the breakpoint location's shadow contents. */ | |
35df4500 TJB |
2394 | bl->target_info.placed_address = bl->address; |
2395 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 2396 | bl->target_info.length = bl->length; |
8181d85f | 2397 | |
b775012e LM |
2398 | /* When working with target-side conditions, we must pass all the conditions |
2399 | for the same breakpoint address down to the target since GDB will not | |
2400 | insert those locations. With a list of breakpoint conditions, the target | |
2401 | can decide when to stop and notify GDB. */ | |
2402 | ||
2403 | if (is_breakpoint (bl->owner)) | |
2404 | { | |
2405 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2406 | build_target_command_list (bl); |
2407 | /* Reset the modification marker. */ | |
b775012e LM |
2408 | bl->needs_update = 0; |
2409 | } | |
2410 | ||
35df4500 TJB |
2411 | if (bl->loc_type == bp_loc_software_breakpoint |
2412 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2413 | { |
35df4500 | 2414 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2415 | { |
2416 | /* If the explicitly specified breakpoint type | |
2417 | is not hardware breakpoint, check the memory map to see | |
2418 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2419 | |
765dc015 VP |
2420 | Two important cases are: |
2421 | - location type is not hardware breakpoint, memory | |
2422 | is readonly. We change the type of the location to | |
2423 | hardware breakpoint. | |
4a64f543 MS |
2424 | - location type is hardware breakpoint, memory is |
2425 | read-write. This means we've previously made the | |
2426 | location hardware one, but then the memory map changed, | |
2427 | so we undo. | |
765dc015 | 2428 | |
4a64f543 MS |
2429 | When breakpoints are removed, remove_breakpoints will use |
2430 | location types we've just set here, the only possible | |
2431 | problem is that memory map has changed during running | |
2432 | program, but it's not going to work anyway with current | |
2433 | gdb. */ | |
765dc015 | 2434 | struct mem_region *mr |
35df4500 | 2435 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
2436 | |
2437 | if (mr) | |
2438 | { | |
2439 | if (automatic_hardware_breakpoints) | |
2440 | { | |
765dc015 VP |
2441 | enum bp_loc_type new_type; |
2442 | ||
2443 | if (mr->attrib.mode != MEM_RW) | |
2444 | new_type = bp_loc_hardware_breakpoint; | |
2445 | else | |
2446 | new_type = bp_loc_software_breakpoint; | |
2447 | ||
35df4500 | 2448 | if (new_type != bl->loc_type) |
765dc015 VP |
2449 | { |
2450 | static int said = 0; | |
cc59ec59 | 2451 | |
35df4500 | 2452 | bl->loc_type = new_type; |
765dc015 VP |
2453 | if (!said) |
2454 | { | |
3e43a32a MS |
2455 | fprintf_filtered (gdb_stdout, |
2456 | _("Note: automatically using " | |
2457 | "hardware breakpoints for " | |
2458 | "read-only addresses.\n")); | |
765dc015 VP |
2459 | said = 1; |
2460 | } | |
2461 | } | |
2462 | } | |
35df4500 | 2463 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 2464 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
2465 | warning (_("cannot set software breakpoint " |
2466 | "at readonly address %s"), | |
35df4500 | 2467 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
2468 | } |
2469 | } | |
2470 | ||
879bfdc2 DJ |
2471 | /* First check to see if we have to handle an overlay. */ |
2472 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2473 | || bl->section == NULL |
2474 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2475 | { |
2476 | /* No overlay handling: just set the breakpoint. */ | |
2477 | ||
348d480f | 2478 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
2479 | } |
2480 | else | |
2481 | { | |
4a64f543 | 2482 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2483 | Shall we set a breakpoint at the LMA? */ |
2484 | if (!overlay_events_enabled) | |
2485 | { | |
2486 | /* Yes -- overlay event support is not active, | |
2487 | so we must try to set a breakpoint at the LMA. | |
2488 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2489 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2490 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2491 | bl->owner->number); |
879bfdc2 DJ |
2492 | else |
2493 | { | |
35df4500 TJB |
2494 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2495 | bl->section); | |
879bfdc2 | 2496 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
2497 | bl->overlay_target_info = bl->target_info; |
2498 | bl->overlay_target_info.placed_address = addr; | |
2499 | val = target_insert_breakpoint (bl->gdbarch, | |
2500 | &bl->overlay_target_info); | |
879bfdc2 | 2501 | if (val != 0) |
99361f52 | 2502 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2503 | "Overlay breakpoint %d " |
2504 | "failed: in ROM?\n", | |
35df4500 | 2505 | bl->owner->number); |
879bfdc2 DJ |
2506 | } |
2507 | } | |
2508 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2509 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2510 | { |
2511 | /* Yes. This overlay section is mapped into memory. */ | |
348d480f | 2512 | val = bl->owner->ops->insert_location (bl); |
879bfdc2 DJ |
2513 | } |
2514 | else | |
2515 | { | |
2516 | /* No. This breakpoint will not be inserted. | |
2517 | No error, but do not mark the bp as 'inserted'. */ | |
2518 | return 0; | |
2519 | } | |
2520 | } | |
2521 | ||
2522 | if (val) | |
2523 | { | |
2524 | /* Can't set the breakpoint. */ | |
35df4500 | 2525 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 2526 | { |
4a64f543 | 2527 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 2528 | val = 0; |
35df4500 | 2529 | bl->shlib_disabled = 1; |
8d3788bd | 2530 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2531 | if (!*disabled_breaks) |
2532 | { | |
2533 | fprintf_unfiltered (tmp_error_stream, | |
2534 | "Cannot insert breakpoint %d.\n", | |
2535 | bl->owner->number); | |
2536 | fprintf_unfiltered (tmp_error_stream, | |
2537 | "Temporarily disabling shared " | |
2538 | "library breakpoints:\n"); | |
2539 | } | |
2540 | *disabled_breaks = 1; | |
879bfdc2 | 2541 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2542 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
2543 | } |
2544 | else | |
879bfdc2 | 2545 | { |
35df4500 | 2546 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 DJ |
2547 | { |
2548 | *hw_breakpoint_error = 1; | |
3e43a32a MS |
2549 | fprintf_unfiltered (tmp_error_stream, |
2550 | "Cannot insert hardware " | |
2551 | "breakpoint %d.\n", | |
35df4500 | 2552 | bl->owner->number); |
879bfdc2 DJ |
2553 | } |
2554 | else | |
2555 | { | |
2556 | fprintf_unfiltered (tmp_error_stream, | |
2557 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 2558 | bl->owner->number); |
879bfdc2 DJ |
2559 | fprintf_filtered (tmp_error_stream, |
2560 | "Error accessing memory address "); | |
35df4500 | 2561 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 2562 | tmp_error_stream); |
879bfdc2 DJ |
2563 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
2564 | safe_strerror (val)); | |
2565 | } | |
2566 | ||
2567 | } | |
2568 | } | |
2569 | else | |
35df4500 | 2570 | bl->inserted = 1; |
879bfdc2 DJ |
2571 | |
2572 | return val; | |
2573 | } | |
2574 | ||
35df4500 | 2575 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2576 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2577 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2578 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2579 | { |
77b06cd7 TJB |
2580 | gdb_assert (bl->owner->ops != NULL |
2581 | && bl->owner->ops->insert_location != NULL); | |
2582 | ||
2583 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2584 | |
2585 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2586 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2587 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2588 | { |
2589 | struct bp_location *loc, **loc_temp; | |
2590 | ||
2591 | /* But don't try to insert it, if there's already another | |
2592 | hw_access location that would be considered a duplicate | |
2593 | of this one. */ | |
2594 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2595 | if (loc != bl |
85d721b8 | 2596 | && loc->watchpoint_type == hw_access |
35df4500 | 2597 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2598 | { |
35df4500 TJB |
2599 | bl->duplicate = 1; |
2600 | bl->inserted = 1; | |
2601 | bl->target_info = loc->target_info; | |
2602 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2603 | val = 0; |
2604 | break; | |
2605 | } | |
2606 | ||
2607 | if (val == 1) | |
2608 | { | |
77b06cd7 TJB |
2609 | bl->watchpoint_type = hw_access; |
2610 | val = bl->owner->ops->insert_location (bl); | |
2611 | ||
2612 | if (val) | |
2613 | /* Back to the original value. */ | |
2614 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2615 | } |
2616 | } | |
2617 | ||
35df4500 | 2618 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2619 | } |
2620 | ||
35df4500 | 2621 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2622 | { |
77b06cd7 TJB |
2623 | gdb_assert (bl->owner->ops != NULL |
2624 | && bl->owner->ops->insert_location != NULL); | |
2625 | ||
2626 | val = bl->owner->ops->insert_location (bl); | |
2627 | if (val) | |
2628 | { | |
2629 | bl->owner->enable_state = bp_disabled; | |
2630 | ||
2631 | if (val == 1) | |
2632 | warning (_("\ | |
2633 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2634 | of catchpoint."), bl->owner->number); | |
2635 | else | |
2636 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2637 | } | |
2638 | ||
2639 | bl->inserted = (val == 0); | |
1640b821 DJ |
2640 | |
2641 | /* We've already printed an error message if there was a problem | |
2642 | inserting this catchpoint, and we've disabled the catchpoint, | |
2643 | so just return success. */ | |
2644 | return 0; | |
879bfdc2 DJ |
2645 | } |
2646 | ||
2647 | return 0; | |
2648 | } | |
2649 | ||
6c95b8df PA |
2650 | /* This function is called when program space PSPACE is about to be |
2651 | deleted. It takes care of updating breakpoints to not reference | |
2652 | PSPACE anymore. */ | |
2653 | ||
2654 | void | |
2655 | breakpoint_program_space_exit (struct program_space *pspace) | |
2656 | { | |
2657 | struct breakpoint *b, *b_temp; | |
876fa593 | 2658 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2659 | |
2660 | /* Remove any breakpoint that was set through this program space. */ | |
2661 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2662 | { | |
2663 | if (b->pspace == pspace) | |
2664 | delete_breakpoint (b); | |
2665 | } | |
2666 | ||
2667 | /* Breakpoints set through other program spaces could have locations | |
2668 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2669 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2670 | { |
2671 | struct bp_location *tmp; | |
2672 | ||
2673 | if (loc->pspace == pspace) | |
2674 | { | |
2bdf28a0 | 2675 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2676 | if (loc->owner->loc == loc) |
2677 | loc->owner->loc = loc->next; | |
2678 | else | |
2679 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2680 | if (tmp->next == loc) | |
2681 | { | |
2682 | tmp->next = loc->next; | |
2683 | break; | |
2684 | } | |
2685 | } | |
2686 | } | |
2687 | ||
2688 | /* Now update the global location list to permanently delete the | |
2689 | removed locations above. */ | |
2690 | update_global_location_list (0); | |
2691 | } | |
2692 | ||
74960c60 VP |
2693 | /* Make sure all breakpoints are inserted in inferior. |
2694 | Throws exception on any error. | |
2695 | A breakpoint that is already inserted won't be inserted | |
2696 | again, so calling this function twice is safe. */ | |
2697 | void | |
2698 | insert_breakpoints (void) | |
2699 | { | |
2700 | struct breakpoint *bpt; | |
2701 | ||
2702 | ALL_BREAKPOINTS (bpt) | |
2703 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2704 | { |
2705 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2706 | ||
2707 | update_watchpoint (w, 0 /* don't reparse. */); | |
2708 | } | |
74960c60 | 2709 | |
b60e7edf | 2710 | update_global_location_list (1); |
74960c60 | 2711 | |
c35b1492 PA |
2712 | /* update_global_location_list does not insert breakpoints when |
2713 | always_inserted_mode is not enabled. Explicitly insert them | |
2714 | now. */ | |
2715 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
2716 | insert_breakpoint_locations (); |
2717 | } | |
2718 | ||
20388dd6 YQ |
2719 | /* Invoke CALLBACK for each of bp_location. */ |
2720 | ||
2721 | void | |
2722 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2723 | { | |
2724 | struct bp_location *loc, **loc_tmp; | |
2725 | ||
2726 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2727 | { | |
2728 | callback (loc, NULL); | |
2729 | } | |
2730 | } | |
2731 | ||
b775012e LM |
2732 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2733 | target. It is the case with deleting and disabling of breakpoints when using | |
2734 | always-inserted mode. */ | |
2735 | ||
2736 | static void | |
2737 | update_inserted_breakpoint_locations (void) | |
2738 | { | |
2739 | struct bp_location *bl, **blp_tmp; | |
2740 | int error_flag = 0; | |
2741 | int val = 0; | |
2742 | int disabled_breaks = 0; | |
2743 | int hw_breakpoint_error = 0; | |
2744 | ||
2745 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
2746 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
2747 | ||
2748 | /* Explicitly mark the warning -- this will only be printed if | |
2749 | there was an error. */ | |
2750 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
2751 | ||
2752 | save_current_space_and_thread (); | |
2753 | ||
2754 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2755 | { | |
2756 | /* We only want to update software breakpoints and hardware | |
2757 | breakpoints. */ | |
2758 | if (!is_breakpoint (bl->owner)) | |
2759 | continue; | |
2760 | ||
2761 | /* We only want to update locations that are already inserted | |
2762 | and need updating. This is to avoid unwanted insertion during | |
2763 | deletion of breakpoints. */ | |
2764 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2765 | continue; | |
2766 | ||
2767 | switch_to_program_space_and_thread (bl->pspace); | |
2768 | ||
2769 | /* For targets that support global breakpoints, there's no need | |
2770 | to select an inferior to insert breakpoint to. In fact, even | |
2771 | if we aren't attached to any process yet, we should still | |
2772 | insert breakpoints. */ | |
2773 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2774 | && ptid_equal (inferior_ptid, null_ptid)) | |
2775 | continue; | |
2776 | ||
2777 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
2778 | &hw_breakpoint_error); | |
2779 | if (val) | |
2780 | error_flag = val; | |
2781 | } | |
2782 | ||
2783 | if (error_flag) | |
2784 | { | |
2785 | target_terminal_ours_for_output (); | |
2786 | error_stream (tmp_error_stream); | |
2787 | } | |
2788 | ||
2789 | do_cleanups (cleanups); | |
2790 | } | |
2791 | ||
c30eee59 | 2792 | /* Used when starting or continuing the program. */ |
c906108c | 2793 | |
74960c60 VP |
2794 | static void |
2795 | insert_breakpoint_locations (void) | |
c906108c | 2796 | { |
a5606eee | 2797 | struct breakpoint *bpt; |
35df4500 | 2798 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2799 | int error_flag = 0; |
c906108c | 2800 | int val = 0; |
3fbb6ffa | 2801 | int disabled_breaks = 0; |
81d0cc19 | 2802 | int hw_breakpoint_error = 0; |
c906108c | 2803 | |
81d0cc19 | 2804 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 2805 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 2806 | |
81d0cc19 GS |
2807 | /* Explicitly mark the warning -- this will only be printed if |
2808 | there was an error. */ | |
2809 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
2810 | |
2811 | save_current_space_and_thread (); | |
2812 | ||
35df4500 | 2813 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2814 | { |
b775012e | 2815 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2816 | continue; |
2817 | ||
4a64f543 MS |
2818 | /* There is no point inserting thread-specific breakpoints if |
2819 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2820 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
2821 | if (bl->owner->thread != -1 |
2822 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2823 | continue; |
2824 | ||
35df4500 | 2825 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2826 | |
2827 | /* For targets that support global breakpoints, there's no need | |
2828 | to select an inferior to insert breakpoint to. In fact, even | |
2829 | if we aren't attached to any process yet, we should still | |
2830 | insert breakpoints. */ | |
2831 | if (!gdbarch_has_global_breakpoints (target_gdbarch) | |
2832 | && ptid_equal (inferior_ptid, null_ptid)) | |
2833 | continue; | |
2834 | ||
3fbb6ffa TJB |
2835 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
2836 | &hw_breakpoint_error); | |
879bfdc2 | 2837 | if (val) |
eacd795a | 2838 | error_flag = val; |
879bfdc2 | 2839 | } |
c906108c | 2840 | |
4a64f543 MS |
2841 | /* If we failed to insert all locations of a watchpoint, remove |
2842 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2843 | ALL_BREAKPOINTS (bpt) |
2844 | { | |
2845 | int some_failed = 0; | |
2846 | struct bp_location *loc; | |
2847 | ||
2848 | if (!is_hardware_watchpoint (bpt)) | |
2849 | continue; | |
2850 | ||
d6b74ac4 | 2851 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2852 | continue; |
74960c60 VP |
2853 | |
2854 | if (bpt->disposition == disp_del_at_next_stop) | |
2855 | continue; | |
a5606eee VP |
2856 | |
2857 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2858 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2859 | { |
2860 | some_failed = 1; | |
2861 | break; | |
2862 | } | |
2863 | if (some_failed) | |
2864 | { | |
2865 | for (loc = bpt->loc; loc; loc = loc->next) | |
2866 | if (loc->inserted) | |
2867 | remove_breakpoint (loc, mark_uninserted); | |
2868 | ||
2869 | hw_breakpoint_error = 1; | |
2870 | fprintf_unfiltered (tmp_error_stream, | |
2871 | "Could not insert hardware watchpoint %d.\n", | |
2872 | bpt->number); | |
eacd795a | 2873 | error_flag = -1; |
a5606eee VP |
2874 | } |
2875 | } | |
2876 | ||
eacd795a | 2877 | if (error_flag) |
81d0cc19 GS |
2878 | { |
2879 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2880 | message about possibly exhausted resources. */ | |
879bfdc2 | 2881 | if (hw_breakpoint_error) |
81d0cc19 | 2882 | { |
c6510018 MS |
2883 | fprintf_unfiltered (tmp_error_stream, |
2884 | "Could not insert hardware breakpoints:\n\ | |
2885 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2886 | } |
81d0cc19 GS |
2887 | target_terminal_ours_for_output (); |
2888 | error_stream (tmp_error_stream); | |
2889 | } | |
f7545552 TT |
2890 | |
2891 | do_cleanups (cleanups); | |
c906108c SS |
2892 | } |
2893 | ||
c30eee59 TJB |
2894 | /* Used when the program stops. |
2895 | Returns zero if successful, or non-zero if there was a problem | |
2896 | removing a breakpoint location. */ | |
2897 | ||
c906108c | 2898 | int |
fba45db2 | 2899 | remove_breakpoints (void) |
c906108c | 2900 | { |
35df4500 | 2901 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2902 | int val = 0; |
c906108c | 2903 | |
35df4500 | 2904 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2905 | { |
1e4d1764 | 2906 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2907 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2908 | } |
3a1bae8e | 2909 | return val; |
c906108c SS |
2910 | } |
2911 | ||
6c95b8df PA |
2912 | /* Remove breakpoints of process PID. */ |
2913 | ||
2914 | int | |
2915 | remove_breakpoints_pid (int pid) | |
2916 | { | |
35df4500 | 2917 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2918 | int val; |
2919 | struct inferior *inf = find_inferior_pid (pid); | |
2920 | ||
35df4500 | 2921 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2922 | { |
35df4500 | 2923 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2924 | continue; |
2925 | ||
d3ce09f5 SS |
2926 | if (bl->owner->type == bp_dprintf) |
2927 | continue; | |
2928 | ||
35df4500 | 2929 | if (bl->inserted) |
6c95b8df | 2930 | { |
35df4500 | 2931 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2932 | if (val != 0) |
2933 | return val; | |
2934 | } | |
2935 | } | |
2936 | return 0; | |
2937 | } | |
2938 | ||
c906108c | 2939 | int |
fba45db2 | 2940 | reattach_breakpoints (int pid) |
c906108c | 2941 | { |
6c95b8df | 2942 | struct cleanup *old_chain; |
35df4500 | 2943 | struct bp_location *bl, **blp_tmp; |
c906108c | 2944 | int val; |
86b887df | 2945 | struct ui_file *tmp_error_stream; |
3fbb6ffa | 2946 | int dummy1 = 0, dummy2 = 0; |
6c95b8df PA |
2947 | struct inferior *inf; |
2948 | struct thread_info *tp; | |
2949 | ||
2950 | tp = any_live_thread_of_process (pid); | |
2951 | if (tp == NULL) | |
2952 | return 1; | |
2953 | ||
2954 | inf = find_inferior_pid (pid); | |
2955 | old_chain = save_inferior_ptid (); | |
2956 | ||
2957 | inferior_ptid = tp->ptid; | |
a4954f26 | 2958 | |
86b887df | 2959 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2960 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2961 | |
35df4500 | 2962 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2963 | { |
35df4500 | 2964 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2965 | continue; |
2966 | ||
35df4500 | 2967 | if (bl->inserted) |
c5aa993b | 2968 | { |
35df4500 | 2969 | bl->inserted = 0; |
3fbb6ffa | 2970 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2); |
c5aa993b JM |
2971 | if (val != 0) |
2972 | { | |
ce696e05 | 2973 | do_cleanups (old_chain); |
c5aa993b JM |
2974 | return val; |
2975 | } | |
2976 | } | |
2977 | } | |
ce696e05 | 2978 | do_cleanups (old_chain); |
c906108c SS |
2979 | return 0; |
2980 | } | |
2981 | ||
e58b0e63 PA |
2982 | static int internal_breakpoint_number = -1; |
2983 | ||
84f4c1fe PM |
2984 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
2985 | If INTERNAL is non-zero, the breakpoint number will be populated | |
2986 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 2987 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
2988 | breakpoint_count and that value incremented. Internal breakpoints |
2989 | do not set the internal var bpnum. */ | |
2990 | static void | |
2991 | set_breakpoint_number (int internal, struct breakpoint *b) | |
2992 | { | |
2993 | if (internal) | |
2994 | b->number = internal_breakpoint_number--; | |
2995 | else | |
2996 | { | |
2997 | set_breakpoint_count (breakpoint_count + 1); | |
2998 | b->number = breakpoint_count; | |
2999 | } | |
3000 | } | |
3001 | ||
e62c965a | 3002 | static struct breakpoint * |
a6d9a66e | 3003 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3004 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3005 | const struct breakpoint_ops *ops) |
e62c965a | 3006 | { |
e62c965a PP |
3007 | struct symtab_and_line sal; |
3008 | struct breakpoint *b; | |
3009 | ||
4a64f543 | 3010 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3011 | |
3012 | sal.pc = address; | |
3013 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3014 | sal.pspace = current_program_space; |
e62c965a | 3015 | |
06edf0c0 | 3016 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3017 | b->number = internal_breakpoint_number--; |
3018 | b->disposition = disp_donttouch; | |
3019 | ||
3020 | return b; | |
3021 | } | |
3022 | ||
17450429 PP |
3023 | static const char *const longjmp_names[] = |
3024 | { | |
3025 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3026 | }; | |
3027 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3028 | ||
3029 | /* Per-objfile data private to breakpoint.c. */ | |
3030 | struct breakpoint_objfile_data | |
3031 | { | |
3032 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3033 | struct minimal_symbol *overlay_msym; | |
3034 | ||
3035 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3036 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
3037 | ||
28106bc2 SDJ |
3038 | /* True if we have looked for longjmp probes. */ |
3039 | int longjmp_searched; | |
3040 | ||
3041 | /* SystemTap probe points for longjmp (if any). */ | |
3042 | VEC (probe_p) *longjmp_probes; | |
3043 | ||
17450429 PP |
3044 | /* Minimal symbol for "std::terminate()" (if any). */ |
3045 | struct minimal_symbol *terminate_msym; | |
3046 | ||
3047 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3048 | struct minimal_symbol *exception_msym; | |
28106bc2 SDJ |
3049 | |
3050 | /* True if we have looked for exception probes. */ | |
3051 | int exception_searched; | |
3052 | ||
3053 | /* SystemTap probe points for unwinding (if any). */ | |
3054 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3055 | }; |
3056 | ||
3057 | static const struct objfile_data *breakpoint_objfile_key; | |
3058 | ||
3059 | /* Minimal symbol not found sentinel. */ | |
3060 | static struct minimal_symbol msym_not_found; | |
3061 | ||
3062 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3063 | ||
3064 | static int | |
3065 | msym_not_found_p (const struct minimal_symbol *msym) | |
3066 | { | |
3067 | return msym == &msym_not_found; | |
3068 | } | |
3069 | ||
3070 | /* Return per-objfile data needed by breakpoint.c. | |
3071 | Allocate the data if necessary. */ | |
3072 | ||
3073 | static struct breakpoint_objfile_data * | |
3074 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3075 | { | |
3076 | struct breakpoint_objfile_data *bp_objfile_data; | |
3077 | ||
3078 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
3079 | if (bp_objfile_data == NULL) | |
3080 | { | |
3081 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
3082 | sizeof (*bp_objfile_data)); | |
3083 | ||
3084 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3085 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3086 | } | |
3087 | return bp_objfile_data; | |
3088 | } | |
3089 | ||
28106bc2 SDJ |
3090 | static void |
3091 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3092 | { | |
3093 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
3094 | ||
3095 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3096 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3097 | } | |
3098 | ||
e62c965a | 3099 | static void |
af02033e | 3100 | create_overlay_event_breakpoint (void) |
e62c965a | 3101 | { |
69de3c6a | 3102 | struct objfile *objfile; |
af02033e | 3103 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3104 | |
69de3c6a PP |
3105 | ALL_OBJFILES (objfile) |
3106 | { | |
3107 | struct breakpoint *b; | |
17450429 PP |
3108 | struct breakpoint_objfile_data *bp_objfile_data; |
3109 | CORE_ADDR addr; | |
69de3c6a | 3110 | |
17450429 PP |
3111 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3112 | ||
3113 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
3114 | continue; | |
3115 | ||
3116 | if (bp_objfile_data->overlay_msym == NULL) | |
3117 | { | |
3118 | struct minimal_symbol *m; | |
3119 | ||
3120 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3121 | if (m == NULL) | |
3122 | { | |
3123 | /* Avoid future lookups in this objfile. */ | |
3124 | bp_objfile_data->overlay_msym = &msym_not_found; | |
3125 | continue; | |
3126 | } | |
3127 | bp_objfile_data->overlay_msym = m; | |
3128 | } | |
e62c965a | 3129 | |
17450429 PP |
3130 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
3131 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3132 | bp_overlay_event, |
3133 | &internal_breakpoint_ops); | |
69de3c6a | 3134 | b->addr_string = xstrdup (func_name); |
e62c965a | 3135 | |
69de3c6a PP |
3136 | if (overlay_debugging == ovly_auto) |
3137 | { | |
3138 | b->enable_state = bp_enabled; | |
3139 | overlay_events_enabled = 1; | |
3140 | } | |
3141 | else | |
3142 | { | |
3143 | b->enable_state = bp_disabled; | |
3144 | overlay_events_enabled = 0; | |
3145 | } | |
e62c965a PP |
3146 | } |
3147 | update_global_location_list (1); | |
3148 | } | |
3149 | ||
0fd8e87f | 3150 | static void |
af02033e | 3151 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3152 | { |
6c95b8df | 3153 | struct program_space *pspace; |
6c95b8df PA |
3154 | struct cleanup *old_chain; |
3155 | ||
3156 | old_chain = save_current_program_space (); | |
0fd8e87f | 3157 | |
6c95b8df | 3158 | ALL_PSPACES (pspace) |
af02033e PP |
3159 | { |
3160 | struct objfile *objfile; | |
3161 | ||
3162 | set_current_program_space (pspace); | |
3163 | ||
3164 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3165 | { |
af02033e PP |
3166 | int i; |
3167 | struct gdbarch *gdbarch; | |
17450429 | 3168 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3169 | |
af02033e PP |
3170 | gdbarch = get_objfile_arch (objfile); |
3171 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
3172 | continue; |
3173 | ||
17450429 PP |
3174 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3175 | ||
28106bc2 SDJ |
3176 | if (!bp_objfile_data->longjmp_searched) |
3177 | { | |
3178 | bp_objfile_data->longjmp_probes | |
3179 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3180 | bp_objfile_data->longjmp_searched = 1; | |
3181 | } | |
3182 | ||
3183 | if (bp_objfile_data->longjmp_probes != NULL) | |
3184 | { | |
3185 | int i; | |
3186 | struct probe *probe; | |
3187 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3188 | ||
3189 | for (i = 0; | |
3190 | VEC_iterate (probe_p, | |
3191 | bp_objfile_data->longjmp_probes, | |
3192 | i, probe); | |
3193 | ++i) | |
3194 | { | |
3195 | struct breakpoint *b; | |
3196 | ||
3197 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3198 | bp_longjmp_master, | |
3199 | &internal_breakpoint_ops); | |
3200 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
3201 | b->enable_state = bp_disabled; | |
3202 | } | |
3203 | ||
3204 | continue; | |
3205 | } | |
3206 | ||
17450429 | 3207 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3208 | { |
3209 | struct breakpoint *b; | |
af02033e | 3210 | const char *func_name; |
17450429 | 3211 | CORE_ADDR addr; |
6c95b8df | 3212 | |
17450429 | 3213 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 3214 | continue; |
0fd8e87f | 3215 | |
17450429 PP |
3216 | func_name = longjmp_names[i]; |
3217 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
3218 | { | |
3219 | struct minimal_symbol *m; | |
3220 | ||
3221 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3222 | if (m == NULL) | |
3223 | { | |
3224 | /* Prevent future lookups in this objfile. */ | |
3225 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
3226 | continue; | |
3227 | } | |
3228 | bp_objfile_data->longjmp_msym[i] = m; | |
3229 | } | |
3230 | ||
3231 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
3232 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3233 | &internal_breakpoint_ops); | |
af02033e PP |
3234 | b->addr_string = xstrdup (func_name); |
3235 | b->enable_state = bp_disabled; | |
3236 | } | |
0fd8e87f | 3237 | } |
af02033e | 3238 | } |
0fd8e87f | 3239 | update_global_location_list (1); |
6c95b8df PA |
3240 | |
3241 | do_cleanups (old_chain); | |
0fd8e87f UW |
3242 | } |
3243 | ||
af02033e | 3244 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3245 | static void |
af02033e | 3246 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3247 | { |
3248 | struct program_space *pspace; | |
aa7d318d | 3249 | struct cleanup *old_chain; |
af02033e | 3250 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3251 | |
3252 | old_chain = save_current_program_space (); | |
3253 | ||
3254 | ALL_PSPACES (pspace) | |
17450429 PP |
3255 | { |
3256 | struct objfile *objfile; | |
3257 | CORE_ADDR addr; | |
3258 | ||
3259 | set_current_program_space (pspace); | |
3260 | ||
aa7d318d TT |
3261 | ALL_OBJFILES (objfile) |
3262 | { | |
3263 | struct breakpoint *b; | |
17450429 | 3264 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 3265 | |
17450429 | 3266 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3267 | |
17450429 PP |
3268 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
3269 | continue; | |
3270 | ||
3271 | if (bp_objfile_data->terminate_msym == NULL) | |
3272 | { | |
3273 | struct minimal_symbol *m; | |
3274 | ||
3275 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3276 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
3277 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
3278 | { | |
3279 | /* Prevent future lookups in this objfile. */ | |
3280 | bp_objfile_data->terminate_msym = &msym_not_found; | |
3281 | continue; | |
3282 | } | |
3283 | bp_objfile_data->terminate_msym = m; | |
3284 | } | |
aa7d318d | 3285 | |
17450429 PP |
3286 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3287 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3288 | bp_std_terminate_master, |
3289 | &internal_breakpoint_ops); | |
aa7d318d TT |
3290 | b->addr_string = xstrdup (func_name); |
3291 | b->enable_state = bp_disabled; | |
3292 | } | |
17450429 PP |
3293 | } |
3294 | ||
aa7d318d TT |
3295 | update_global_location_list (1); |
3296 | ||
3297 | do_cleanups (old_chain); | |
3298 | } | |
3299 | ||
186c406b TT |
3300 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3301 | ||
70221824 | 3302 | static void |
186c406b TT |
3303 | create_exception_master_breakpoint (void) |
3304 | { | |
3305 | struct objfile *objfile; | |
17450429 | 3306 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3307 | |
3308 | ALL_OBJFILES (objfile) | |
3309 | { | |
17450429 PP |
3310 | struct breakpoint *b; |
3311 | struct gdbarch *gdbarch; | |
3312 | struct breakpoint_objfile_data *bp_objfile_data; | |
3313 | CORE_ADDR addr; | |
3314 | ||
3315 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3316 | ||
28106bc2 SDJ |
3317 | /* We prefer the SystemTap probe point if it exists. */ |
3318 | if (!bp_objfile_data->exception_searched) | |
3319 | { | |
3320 | bp_objfile_data->exception_probes | |
3321 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3322 | bp_objfile_data->exception_searched = 1; | |
3323 | } | |
3324 | ||
3325 | if (bp_objfile_data->exception_probes != NULL) | |
3326 | { | |
3327 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3328 | int i; | |
3329 | struct probe *probe; | |
3330 | ||
3331 | for (i = 0; | |
3332 | VEC_iterate (probe_p, | |
3333 | bp_objfile_data->exception_probes, | |
3334 | i, probe); | |
3335 | ++i) | |
3336 | { | |
3337 | struct breakpoint *b; | |
3338 | ||
3339 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3340 | bp_exception_master, | |
3341 | &internal_breakpoint_ops); | |
3342 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3343 | b->enable_state = bp_disabled; | |
3344 | } | |
3345 | ||
3346 | continue; | |
3347 | } | |
3348 | ||
3349 | /* Otherwise, try the hook function. */ | |
3350 | ||
17450429 PP |
3351 | if (msym_not_found_p (bp_objfile_data->exception_msym)) |
3352 | continue; | |
3353 | ||
3354 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3355 | |
17450429 | 3356 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 3357 | { |
17450429 | 3358 | struct minimal_symbol *debug_hook; |
186c406b | 3359 | |
17450429 PP |
3360 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3361 | if (debug_hook == NULL) | |
3362 | { | |
3363 | bp_objfile_data->exception_msym = &msym_not_found; | |
3364 | continue; | |
3365 | } | |
3366 | ||
3367 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3368 | } |
17450429 PP |
3369 | |
3370 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
3371 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
3372 | ¤t_target); | |
06edf0c0 PA |
3373 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3374 | &internal_breakpoint_ops); | |
17450429 PP |
3375 | b->addr_string = xstrdup (func_name); |
3376 | b->enable_state = bp_disabled; | |
186c406b TT |
3377 | } |
3378 | ||
3379 | update_global_location_list (1); | |
3380 | } | |
3381 | ||
c906108c | 3382 | void |
fba45db2 | 3383 | update_breakpoints_after_exec (void) |
c906108c | 3384 | { |
35df4500 | 3385 | struct breakpoint *b, *b_tmp; |
876fa593 | 3386 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3387 | |
25b22b0a PA |
3388 | /* We're about to delete breakpoints from GDB's lists. If the |
3389 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3390 | writing the breakpoints' "shadow contents" back into memory. The | |
3391 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3392 | do that. Instead, the target is responsible from marking | |
3393 | breakpoints out as soon as it detects an exec. We don't do that | |
3394 | here instead, because there may be other attempts to delete | |
3395 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3396 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3397 | if (bploc->pspace == current_program_space) |
3398 | gdb_assert (!bploc->inserted); | |
c906108c | 3399 | |
35df4500 | 3400 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3401 | { |
6c95b8df PA |
3402 | if (b->pspace != current_program_space) |
3403 | continue; | |
3404 | ||
4a64f543 | 3405 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3406 | if (b->type == bp_shlib_event) |
3407 | { | |
3408 | delete_breakpoint (b); | |
3409 | continue; | |
3410 | } | |
c906108c | 3411 | |
4a64f543 | 3412 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3413 | if (b->type == bp_jit_event) |
3414 | { | |
3415 | delete_breakpoint (b); | |
3416 | continue; | |
3417 | } | |
3418 | ||
1900040c | 3419 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3420 | as must overlay event and longjmp master breakpoints. */ |
3421 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3422 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3423 | || b->type == bp_exception_master) | |
c4093a6a JM |
3424 | { |
3425 | delete_breakpoint (b); | |
3426 | continue; | |
3427 | } | |
3428 | ||
4a64f543 | 3429 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3430 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3431 | { |
3432 | delete_breakpoint (b); | |
3433 | continue; | |
3434 | } | |
3435 | ||
611c83ae PA |
3436 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3437 | after an exec. */ | |
186c406b | 3438 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3439 | || b->type == bp_longjmp_call_dummy |
186c406b | 3440 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3441 | { |
3442 | delete_breakpoint (b); | |
3443 | continue; | |
3444 | } | |
3445 | ||
ce78b96d JB |
3446 | if (b->type == bp_catchpoint) |
3447 | { | |
3448 | /* For now, none of the bp_catchpoint breakpoints need to | |
3449 | do anything at this point. In the future, if some of | |
3450 | the catchpoints need to something, we will need to add | |
3451 | a new method, and call this method from here. */ | |
3452 | continue; | |
3453 | } | |
3454 | ||
c5aa993b JM |
3455 | /* bp_finish is a special case. The only way we ought to be able |
3456 | to see one of these when an exec() has happened, is if the user | |
3457 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3458 | carries them to the call-site of the current callee, by setting | |
3459 | a temporary bp there and resuming. But in this case, the finish | |
3460 | will carry them entirely through the vfork & exec. | |
3461 | ||
3462 | We don't want to allow a bp_finish to remain inserted now. But | |
3463 | we can't safely delete it, 'cause finish_command has a handle to | |
3464 | the bp on a bpstat, and will later want to delete it. There's a | |
3465 | chance (and I've seen it happen) that if we delete the bp_finish | |
3466 | here, that its storage will get reused by the time finish_command | |
3467 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3468 | We really must allow finish_command to delete a bp_finish. | |
3469 | ||
e5dd4106 | 3470 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3471 | it's safe to delete something others may have handles to?" |
3472 | problem, what we'll do here is just uninsert the bp_finish, and | |
3473 | let finish_command delete it. | |
3474 | ||
3475 | (We know the bp_finish is "doomed" in the sense that it's | |
3476 | momentary, and will be deleted as soon as finish_command sees | |
3477 | the inferior stopped. So it doesn't matter that the bp's | |
3478 | address is probably bogus in the new a.out, unlike e.g., the | |
3479 | solib breakpoints.) */ | |
c5aa993b | 3480 | |
c5aa993b JM |
3481 | if (b->type == bp_finish) |
3482 | { | |
3483 | continue; | |
3484 | } | |
3485 | ||
3486 | /* Without a symbolic address, we have little hope of the | |
3487 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3488 | a.out. */ |
c5aa993b JM |
3489 | if (b->addr_string == NULL) |
3490 | { | |
3491 | delete_breakpoint (b); | |
3492 | continue; | |
3493 | } | |
c5aa993b | 3494 | } |
1900040c | 3495 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
3496 | create_overlay_event_breakpoint (); |
3497 | create_longjmp_master_breakpoint (); | |
3498 | create_std_terminate_master_breakpoint (); | |
186c406b | 3499 | create_exception_master_breakpoint (); |
c906108c SS |
3500 | } |
3501 | ||
3502 | int | |
fba45db2 | 3503 | detach_breakpoints (int pid) |
c906108c | 3504 | { |
35df4500 | 3505 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3506 | int val = 0; |
ce696e05 | 3507 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3508 | struct inferior *inf = current_inferior (); |
c5aa993b | 3509 | |
39f77062 | 3510 | if (pid == PIDGET (inferior_ptid)) |
8a3fe4f8 | 3511 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3512 | |
6c95b8df | 3513 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
ce696e05 | 3514 | inferior_ptid = pid_to_ptid (pid); |
35df4500 | 3515 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3516 | { |
35df4500 | 3517 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3518 | continue; |
3519 | ||
35df4500 TJB |
3520 | if (bl->inserted) |
3521 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3522 | } |
d03285ec UW |
3523 | |
3524 | /* Detach single-step breakpoints as well. */ | |
3525 | detach_single_step_breakpoints (); | |
3526 | ||
ce696e05 | 3527 | do_cleanups (old_chain); |
3a1bae8e | 3528 | return val; |
c906108c SS |
3529 | } |
3530 | ||
35df4500 | 3531 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3532 | Note that this is used to detach breakpoints from a child fork. |
3533 | When we get here, the child isn't in the inferior list, and neither | |
3534 | do we have objects to represent its address space --- we should | |
35df4500 | 3535 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3536 | |
c906108c | 3537 | static int |
35df4500 | 3538 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3539 | { |
3540 | int val; | |
c5aa993b | 3541 | |
35df4500 TJB |
3542 | /* BL is never in moribund_locations by our callers. */ |
3543 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3544 | |
35df4500 | 3545 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3546 | /* Permanent breakpoints cannot be inserted or removed. */ |
3547 | return 0; | |
3548 | ||
74960c60 VP |
3549 | /* The type of none suggests that owner is actually deleted. |
3550 | This should not ever happen. */ | |
35df4500 | 3551 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3552 | |
35df4500 TJB |
3553 | if (bl->loc_type == bp_loc_software_breakpoint |
3554 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3555 | { |
c02f5703 MS |
3556 | /* "Normal" instruction breakpoint: either the standard |
3557 | trap-instruction bp (bp_breakpoint), or a | |
3558 | bp_hardware_breakpoint. */ | |
3559 | ||
3560 | /* First check to see if we have to handle an overlay. */ | |
3561 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3562 | || bl->section == NULL |
3563 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3564 | { |
3565 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 3566 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 3567 | } |
c906108c SS |
3568 | else |
3569 | { | |
4a64f543 | 3570 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3571 | Did we set a breakpoint at the LMA? */ |
3572 | if (!overlay_events_enabled) | |
3573 | { | |
3574 | /* Yes -- overlay event support is not active, so we | |
3575 | should have set a breakpoint at the LMA. Remove it. | |
3576 | */ | |
c02f5703 MS |
3577 | /* Ignore any failures: if the LMA is in ROM, we will |
3578 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3579 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3580 | target_remove_hw_breakpoint (bl->gdbarch, | |
3581 | &bl->overlay_target_info); | |
c02f5703 | 3582 | else |
35df4500 TJB |
3583 | target_remove_breakpoint (bl->gdbarch, |
3584 | &bl->overlay_target_info); | |
c02f5703 MS |
3585 | } |
3586 | /* Did we set a breakpoint at the VMA? | |
3587 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3588 | if (bl->inserted) |
c906108c | 3589 | { |
c02f5703 MS |
3590 | /* Yes -- remove it. Previously we did not bother to |
3591 | remove the breakpoint if the section had been | |
3592 | unmapped, but let's not rely on that being safe. We | |
3593 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3594 | |
3595 | /* However, we should remove *software* breakpoints only | |
3596 | if the section is still mapped, or else we overwrite | |
3597 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3598 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3599 | || section_is_mapped (bl->section)) | |
3600 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3601 | else |
3602 | val = 0; | |
c906108c | 3603 | } |
c02f5703 MS |
3604 | else |
3605 | { | |
3606 | /* No -- not inserted, so no need to remove. No error. */ | |
3607 | val = 0; | |
3608 | } | |
c906108c | 3609 | } |
879d1e6b UW |
3610 | |
3611 | /* In some cases, we might not be able to remove a breakpoint | |
3612 | in a shared library that has already been removed, but we | |
3613 | have not yet processed the shlib unload event. */ | |
35df4500 | 3614 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
3615 | val = 0; |
3616 | ||
c906108c SS |
3617 | if (val) |
3618 | return val; | |
35df4500 | 3619 | bl->inserted = (is == mark_inserted); |
c906108c | 3620 | } |
35df4500 | 3621 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3622 | { |
77b06cd7 TJB |
3623 | gdb_assert (bl->owner->ops != NULL |
3624 | && bl->owner->ops->remove_location != NULL); | |
3625 | ||
35df4500 | 3626 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 3627 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 3628 | |
c906108c | 3629 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 3630 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 3631 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3632 | bl->owner->number); |
c906108c | 3633 | } |
35df4500 TJB |
3634 | else if (bl->owner->type == bp_catchpoint |
3635 | && breakpoint_enabled (bl->owner) | |
3636 | && !bl->duplicate) | |
ce78b96d | 3637 | { |
77b06cd7 TJB |
3638 | gdb_assert (bl->owner->ops != NULL |
3639 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3640 | |
77b06cd7 | 3641 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
3642 | if (val) |
3643 | return val; | |
77b06cd7 | 3644 | |
35df4500 | 3645 | bl->inserted = (is == mark_inserted); |
ce78b96d | 3646 | } |
c906108c SS |
3647 | |
3648 | return 0; | |
3649 | } | |
3650 | ||
6c95b8df | 3651 | static int |
35df4500 | 3652 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
3653 | { |
3654 | int ret; | |
3655 | struct cleanup *old_chain; | |
3656 | ||
35df4500 TJB |
3657 | /* BL is never in moribund_locations by our callers. */ |
3658 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3659 | |
35df4500 | 3660 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
3661 | /* Permanent breakpoints cannot be inserted or removed. */ |
3662 | return 0; | |
3663 | ||
3664 | /* The type of none suggests that owner is actually deleted. | |
3665 | This should not ever happen. */ | |
35df4500 | 3666 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
3667 | |
3668 | old_chain = save_current_space_and_thread (); | |
3669 | ||
35df4500 | 3670 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3671 | |
35df4500 | 3672 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
3673 | |
3674 | do_cleanups (old_chain); | |
3675 | return ret; | |
3676 | } | |
3677 | ||
c906108c SS |
3678 | /* Clear the "inserted" flag in all breakpoints. */ |
3679 | ||
25b22b0a | 3680 | void |
fba45db2 | 3681 | mark_breakpoints_out (void) |
c906108c | 3682 | { |
35df4500 | 3683 | struct bp_location *bl, **blp_tmp; |
c906108c | 3684 | |
35df4500 TJB |
3685 | ALL_BP_LOCATIONS (bl, blp_tmp) |
3686 | if (bl->pspace == current_program_space) | |
3687 | bl->inserted = 0; | |
c906108c SS |
3688 | } |
3689 | ||
53a5351d JM |
3690 | /* Clear the "inserted" flag in all breakpoints and delete any |
3691 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3692 | |
3693 | Plus other such housekeeping that has to be done for breakpoints | |
3694 | between runs. | |
3695 | ||
53a5351d JM |
3696 | Note: this function gets called at the end of a run (by |
3697 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3698 | init_wait_for_inferior). */ |
c906108c SS |
3699 | |
3700 | ||
3701 | ||
3702 | void | |
fba45db2 | 3703 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3704 | { |
35df4500 TJB |
3705 | struct breakpoint *b, *b_tmp; |
3706 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 3707 | int ix; |
6c95b8df | 3708 | struct program_space *pspace = current_program_space; |
c906108c | 3709 | |
50c71eaf PA |
3710 | /* If breakpoint locations are shared across processes, then there's |
3711 | nothing to do. */ | |
2567c7d9 | 3712 | if (gdbarch_has_global_breakpoints (target_gdbarch)) |
50c71eaf PA |
3713 | return; |
3714 | ||
35df4500 | 3715 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3716 | { |
35df4500 TJB |
3717 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
3718 | if (bl->pspace == pspace | |
3719 | && bl->owner->enable_state != bp_permanent) | |
3720 | bl->inserted = 0; | |
6c95b8df | 3721 | } |
075f6582 | 3722 | |
35df4500 | 3723 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3724 | { |
6c95b8df PA |
3725 | if (b->loc && b->loc->pspace != pspace) |
3726 | continue; | |
3727 | ||
c5aa993b JM |
3728 | switch (b->type) |
3729 | { | |
3730 | case bp_call_dummy: | |
e2e4d78b | 3731 | case bp_longjmp_call_dummy: |
c906108c | 3732 | |
c5aa993b | 3733 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3734 | cause problems when the inferior is rerun, so we better get |
3735 | rid of it. */ | |
3736 | ||
3737 | case bp_watchpoint_scope: | |
3738 | ||
3739 | /* Also get rid of scope breakpoints. */ | |
3740 | ||
3741 | case bp_shlib_event: | |
3742 | ||
3743 | /* Also remove solib event breakpoints. Their addresses may | |
3744 | have changed since the last time we ran the program. | |
3745 | Actually we may now be debugging against different target; | |
3746 | and so the solib backend that installed this breakpoint may | |
3747 | not be used in by the target. E.g., | |
3748 | ||
3749 | (gdb) file prog-linux | |
3750 | (gdb) run # native linux target | |
3751 | ... | |
3752 | (gdb) kill | |
3753 | (gdb) file prog-win.exe | |
3754 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3755 | */ | |
c906108c | 3756 | |
f59f708a PA |
3757 | case bp_step_resume: |
3758 | ||
3759 | /* Also remove step-resume breakpoints. */ | |
3760 | ||
c5aa993b JM |
3761 | delete_breakpoint (b); |
3762 | break; | |
c906108c | 3763 | |
c5aa993b JM |
3764 | case bp_watchpoint: |
3765 | case bp_hardware_watchpoint: | |
3766 | case bp_read_watchpoint: | |
3767 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3768 | { |
3769 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3770 | |
3a5c3e22 PA |
3771 | /* Likewise for watchpoints on local expressions. */ |
3772 | if (w->exp_valid_block != NULL) | |
3773 | delete_breakpoint (b); | |
3774 | else if (context == inf_starting) | |
3775 | { | |
3776 | /* Reset val field to force reread of starting value in | |
3777 | insert_breakpoints. */ | |
3778 | if (w->val) | |
3779 | value_free (w->val); | |
3780 | w->val = NULL; | |
3781 | w->val_valid = 0; | |
c860120c | 3782 | } |
3a5c3e22 | 3783 | } |
c5aa993b JM |
3784 | break; |
3785 | default: | |
c5aa993b JM |
3786 | break; |
3787 | } | |
3788 | } | |
1c5cfe86 PA |
3789 | |
3790 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3791 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3792 | decref_bp_location (&bl); | |
1c5cfe86 | 3793 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3794 | } |
3795 | ||
6c95b8df PA |
3796 | /* These functions concern about actual breakpoints inserted in the |
3797 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3798 | we need to hop over the bkpt --- so we check for address space | |
3799 | match, not program space. */ | |
3800 | ||
c2c6d25f JM |
3801 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3802 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3803 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3804 | permanent breakpoint. | |
3805 | - When continuing from a location with an ordinary breakpoint, we | |
3806 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3807 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3808 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3809 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3810 | |
c2c6d25f | 3811 | enum breakpoint_here |
6c95b8df | 3812 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 3813 | { |
35df4500 | 3814 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3815 | int any_breakpoint_here = 0; |
c906108c | 3816 | |
35df4500 | 3817 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3818 | { |
35df4500 TJB |
3819 | if (bl->loc_type != bp_loc_software_breakpoint |
3820 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3821 | continue; |
3822 | ||
f1310107 | 3823 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
3824 | if ((breakpoint_enabled (bl->owner) |
3825 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 3826 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3827 | { |
3828 | if (overlay_debugging | |
35df4500 TJB |
3829 | && section_is_overlay (bl->section) |
3830 | && !section_is_mapped (bl->section)) | |
075f6582 | 3831 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 3832 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
3833 | return permanent_breakpoint_here; |
3834 | else | |
3835 | any_breakpoint_here = 1; | |
3836 | } | |
3837 | } | |
c906108c | 3838 | |
c2c6d25f | 3839 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
3840 | } |
3841 | ||
1c5cfe86 PA |
3842 | /* Return true if there's a moribund breakpoint at PC. */ |
3843 | ||
3844 | int | |
6c95b8df | 3845 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
3846 | { |
3847 | struct bp_location *loc; | |
3848 | int ix; | |
3849 | ||
3850 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 3851 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
3852 | return 1; |
3853 | ||
3854 | return 0; | |
3855 | } | |
c2c6d25f | 3856 | |
c36b740a | 3857 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
3858 | inserted using regular breakpoint_chain / bp_location array |
3859 | mechanism. This does not check for single-step breakpoints, which | |
3860 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
3861 | |
3862 | int | |
4a64f543 MS |
3863 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
3864 | CORE_ADDR pc) | |
c906108c | 3865 | { |
35df4500 | 3866 | struct bp_location *bl, **blp_tmp; |
c906108c | 3867 | |
35df4500 | 3868 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3869 | { |
35df4500 TJB |
3870 | if (bl->loc_type != bp_loc_software_breakpoint |
3871 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3872 | continue; |
3873 | ||
35df4500 | 3874 | if (bl->inserted |
f1310107 | 3875 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3876 | { |
3877 | if (overlay_debugging | |
35df4500 TJB |
3878 | && section_is_overlay (bl->section) |
3879 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
3880 | continue; /* unmapped overlay -- can't be a match */ |
3881 | else | |
3882 | return 1; | |
3883 | } | |
c5aa993b | 3884 | } |
c36b740a VP |
3885 | return 0; |
3886 | } | |
3887 | ||
3888 | /* Returns non-zero iff there's either regular breakpoint | |
3889 | or a single step breakpoint inserted at PC. */ | |
3890 | ||
3891 | int | |
6c95b8df | 3892 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 3893 | { |
6c95b8df | 3894 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 3895 | return 1; |
c906108c | 3896 | |
6c95b8df | 3897 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3898 | return 1; |
3899 | ||
c906108c SS |
3900 | return 0; |
3901 | } | |
3902 | ||
4fa8626c DJ |
3903 | /* This function returns non-zero iff there is a software breakpoint |
3904 | inserted at PC. */ | |
3905 | ||
3906 | int | |
3e43a32a MS |
3907 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
3908 | CORE_ADDR pc) | |
4fa8626c | 3909 | { |
35df4500 | 3910 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 3911 | |
35df4500 | 3912 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 3913 | { |
35df4500 | 3914 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
3915 | continue; |
3916 | ||
35df4500 TJB |
3917 | if (bl->inserted |
3918 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 3919 | aspace, pc)) |
4fa8626c DJ |
3920 | { |
3921 | if (overlay_debugging | |
35df4500 TJB |
3922 | && section_is_overlay (bl->section) |
3923 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
3924 | continue; /* unmapped overlay -- can't be a match */ |
3925 | else | |
3926 | return 1; | |
3927 | } | |
3928 | } | |
3929 | ||
1aafd4da | 3930 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 3931 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3932 | return 1; |
3933 | ||
4fa8626c DJ |
3934 | return 0; |
3935 | } | |
3936 | ||
9093389c PA |
3937 | int |
3938 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
3939 | CORE_ADDR addr, ULONGEST len) | |
3940 | { | |
3941 | struct breakpoint *bpt; | |
3942 | ||
3943 | ALL_BREAKPOINTS (bpt) | |
3944 | { | |
3945 | struct bp_location *loc; | |
3946 | ||
3947 | if (bpt->type != bp_hardware_watchpoint | |
3948 | && bpt->type != bp_access_watchpoint) | |
3949 | continue; | |
3950 | ||
3951 | if (!breakpoint_enabled (bpt)) | |
3952 | continue; | |
3953 | ||
3954 | for (loc = bpt->loc; loc; loc = loc->next) | |
3955 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3956 | { | |
3957 | CORE_ADDR l, h; | |
3958 | ||
3959 | /* Check for intersection. */ | |
3960 | l = max (loc->address, addr); | |
3961 | h = min (loc->address + loc->length, addr + len); | |
3962 | if (l < h) | |
3963 | return 1; | |
3964 | } | |
3965 | } | |
3966 | return 0; | |
3967 | } | |
3968 | ||
075f6582 DJ |
3969 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
3970 | PC is valid for process/thread PTID. */ | |
c906108c SS |
3971 | |
3972 | int | |
6c95b8df PA |
3973 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
3974 | ptid_t ptid) | |
c906108c | 3975 | { |
35df4500 | 3976 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 3977 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 3978 | int thread = -1; |
4a306c9a | 3979 | int task = 0; |
a6f1cd96 | 3980 | |
35df4500 | 3981 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3982 | { |
35df4500 TJB |
3983 | if (bl->loc_type != bp_loc_software_breakpoint |
3984 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3985 | continue; |
3986 | ||
35df4500 TJB |
3987 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
3988 | if (!breakpoint_enabled (bl->owner) | |
3989 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
3990 | continue; |
3991 | ||
f1310107 | 3992 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
3993 | continue; |
3994 | ||
35df4500 | 3995 | if (bl->owner->thread != -1) |
075f6582 | 3996 | { |
a6f1cd96 JB |
3997 | /* This is a thread-specific breakpoint. Check that ptid |
3998 | matches that thread. If thread hasn't been computed yet, | |
3999 | it is now time to do so. */ | |
4000 | if (thread == -1) | |
4001 | thread = pid_to_thread_id (ptid); | |
35df4500 | 4002 | if (bl->owner->thread != thread) |
a6f1cd96 | 4003 | continue; |
075f6582 | 4004 | } |
a6f1cd96 | 4005 | |
35df4500 | 4006 | if (bl->owner->task != 0) |
4a306c9a JB |
4007 | { |
4008 | /* This is a task-specific breakpoint. Check that ptid | |
4009 | matches that task. If task hasn't been computed yet, | |
4010 | it is now time to do so. */ | |
4011 | if (task == 0) | |
4012 | task = ada_get_task_number (ptid); | |
35df4500 | 4013 | if (bl->owner->task != task) |
4a306c9a JB |
4014 | continue; |
4015 | } | |
4016 | ||
a6f1cd96 | 4017 | if (overlay_debugging |
35df4500 TJB |
4018 | && section_is_overlay (bl->section) |
4019 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
4020 | continue; /* unmapped overlay -- can't be a match */ |
4021 | ||
4022 | return 1; | |
c5aa993b | 4023 | } |
c906108c SS |
4024 | |
4025 | return 0; | |
4026 | } | |
c906108c | 4027 | \f |
c5aa993b | 4028 | |
c906108c SS |
4029 | /* bpstat stuff. External routines' interfaces are documented |
4030 | in breakpoint.h. */ | |
4031 | ||
4032 | int | |
c326b90e | 4033 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4034 | { |
533be4dd | 4035 | return (ep->type == bp_catchpoint); |
c906108c SS |
4036 | } |
4037 | ||
f431efe5 PA |
4038 | /* Frees any storage that is part of a bpstat. Does not walk the |
4039 | 'next' chain. */ | |
4040 | ||
4041 | static void | |
198757a8 VP |
4042 | bpstat_free (bpstat bs) |
4043 | { | |
4044 | if (bs->old_val != NULL) | |
4045 | value_free (bs->old_val); | |
9add0f1b | 4046 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4047 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4048 | xfree (bs); |
4049 | } | |
4050 | ||
c906108c SS |
4051 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4052 | Also free any storage that is part of a bpstat. */ | |
4053 | ||
4054 | void | |
fba45db2 | 4055 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4056 | { |
4057 | bpstat p; | |
4058 | bpstat q; | |
4059 | ||
4060 | if (bsp == 0) | |
4061 | return; | |
4062 | p = *bsp; | |
4063 | while (p != NULL) | |
4064 | { | |
4065 | q = p->next; | |
198757a8 | 4066 | bpstat_free (p); |
c906108c SS |
4067 | p = q; |
4068 | } | |
4069 | *bsp = NULL; | |
4070 | } | |
4071 | ||
4072 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4073 | is part of the bpstat is copied as well. */ | |
4074 | ||
4075 | bpstat | |
fba45db2 | 4076 | bpstat_copy (bpstat bs) |
c906108c SS |
4077 | { |
4078 | bpstat p = NULL; | |
4079 | bpstat tmp; | |
4080 | bpstat retval = NULL; | |
4081 | ||
4082 | if (bs == NULL) | |
4083 | return bs; | |
4084 | ||
4085 | for (; bs != NULL; bs = bs->next) | |
4086 | { | |
4087 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4088 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4089 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4090 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4091 | if (bs->old_val != NULL) |
3c3185ac JK |
4092 | { |
4093 | tmp->old_val = value_copy (bs->old_val); | |
4094 | release_value (tmp->old_val); | |
4095 | } | |
31cc81e9 | 4096 | |
c906108c SS |
4097 | if (p == NULL) |
4098 | /* This is the first thing in the chain. */ | |
4099 | retval = tmp; | |
4100 | else | |
4101 | p->next = tmp; | |
4102 | p = tmp; | |
4103 | } | |
4104 | p->next = NULL; | |
4105 | return retval; | |
4106 | } | |
4107 | ||
4a64f543 | 4108 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4109 | |
4110 | bpstat | |
fba45db2 | 4111 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4112 | { |
c5aa993b JM |
4113 | if (bsp == NULL) |
4114 | return NULL; | |
c906108c | 4115 | |
c5aa993b JM |
4116 | for (; bsp != NULL; bsp = bsp->next) |
4117 | { | |
f431efe5 | 4118 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4119 | return bsp; |
4120 | } | |
c906108c SS |
4121 | return NULL; |
4122 | } | |
4123 | ||
4a64f543 MS |
4124 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4125 | stopped at. *BSP upon return is a bpstat which points to the | |
4126 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4127 | good for anything but further calls to bpstat_num). | |
4128 | ||
8671a17b PA |
4129 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4130 | Return -1 if stopped at a breakpoint that has been deleted since | |
4131 | we set it. | |
4132 | Return 1 otherwise. */ | |
c906108c SS |
4133 | |
4134 | int | |
8671a17b | 4135 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4136 | { |
4137 | struct breakpoint *b; | |
4138 | ||
4139 | if ((*bsp) == NULL) | |
4140 | return 0; /* No more breakpoint values */ | |
8671a17b | 4141 | |
4a64f543 MS |
4142 | /* We assume we'll never have several bpstats that correspond to a |
4143 | single breakpoint -- otherwise, this function might return the | |
4144 | same number more than once and this will look ugly. */ | |
f431efe5 | 4145 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4146 | *bsp = (*bsp)->next; |
4147 | if (b == NULL) | |
4148 | return -1; /* breakpoint that's been deleted since */ | |
4149 | ||
4150 | *num = b->number; /* We have its number */ | |
4151 | return 1; | |
c906108c SS |
4152 | } |
4153 | ||
e93ca019 | 4154 | /* See breakpoint.h. */ |
c906108c SS |
4155 | |
4156 | void | |
e93ca019 | 4157 | bpstat_clear_actions (void) |
c906108c | 4158 | { |
e93ca019 JK |
4159 | struct thread_info *tp; |
4160 | bpstat bs; | |
4161 | ||
4162 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4163 | return; | |
4164 | ||
4165 | tp = find_thread_ptid (inferior_ptid); | |
4166 | if (tp == NULL) | |
4167 | return; | |
4168 | ||
4169 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4170 | { |
9add0f1b | 4171 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4172 | |
c906108c SS |
4173 | if (bs->old_val != NULL) |
4174 | { | |
4175 | value_free (bs->old_val); | |
4176 | bs->old_val = NULL; | |
4177 | } | |
4178 | } | |
4179 | } | |
4180 | ||
f3b1572e PA |
4181 | /* Called when a command is about to proceed the inferior. */ |
4182 | ||
4183 | static void | |
4184 | breakpoint_about_to_proceed (void) | |
4185 | { | |
4186 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4187 | { | |
4188 | struct thread_info *tp = inferior_thread (); | |
4189 | ||
4190 | /* Allow inferior function calls in breakpoint commands to not | |
4191 | interrupt the command list. When the call finishes | |
4192 | successfully, the inferior will be standing at the same | |
4193 | breakpoint as if nothing happened. */ | |
16c381f0 | 4194 | if (tp->control.in_infcall) |
f3b1572e PA |
4195 | return; |
4196 | } | |
4197 | ||
4198 | breakpoint_proceeded = 1; | |
4199 | } | |
4200 | ||
4a64f543 MS |
4201 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4202 | command. */ | |
c906108c | 4203 | static void |
4efb68b1 | 4204 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4205 | { |
4206 | executing_breakpoint_commands = 0; | |
4207 | } | |
4208 | ||
abf85f46 JK |
4209 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4210 | or its equivalent. */ | |
4211 | ||
4212 | static int | |
4213 | command_line_is_silent (struct command_line *cmd) | |
4214 | { | |
4215 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
4216 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
4217 | } | |
4218 | ||
4a64f543 MS |
4219 | /* Execute all the commands associated with all the breakpoints at |
4220 | this location. Any of these commands could cause the process to | |
4221 | proceed beyond this point, etc. We look out for such changes by | |
4222 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4223 | |
347bddb7 PA |
4224 | Returns true if a breakpoint command resumed the inferior. In that |
4225 | case, it is the caller's responsibility to recall it again with the | |
4226 | bpstat of the current thread. */ | |
4227 | ||
4228 | static int | |
4229 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4230 | { |
4231 | bpstat bs; | |
4232 | struct cleanup *old_chain; | |
347bddb7 | 4233 | int again = 0; |
c906108c SS |
4234 | |
4235 | /* Avoid endless recursion if a `source' command is contained | |
4236 | in bs->commands. */ | |
4237 | if (executing_breakpoint_commands) | |
347bddb7 | 4238 | return 0; |
c906108c SS |
4239 | |
4240 | executing_breakpoint_commands = 1; | |
4241 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4242 | ||
cf6c5ffb TT |
4243 | prevent_dont_repeat (); |
4244 | ||
4a64f543 | 4245 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4246 | bs = *bsp; |
4247 | ||
4248 | breakpoint_proceeded = 0; | |
4249 | for (; bs != NULL; bs = bs->next) | |
4250 | { | |
9add0f1b | 4251 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4252 | struct command_line *cmd; |
4253 | struct cleanup *this_cmd_tree_chain; | |
4254 | ||
4255 | /* Take ownership of the BSP's command tree, if it has one. | |
4256 | ||
4257 | The command tree could legitimately contain commands like | |
4258 | 'step' and 'next', which call clear_proceed_status, which | |
4259 | frees stop_bpstat's command tree. To make sure this doesn't | |
4260 | free the tree we're executing out from under us, we need to | |
4261 | take ownership of the tree ourselves. Since a given bpstat's | |
4262 | commands are only executed once, we don't need to copy it; we | |
4263 | can clear the pointer in the bpstat, and make sure we free | |
4264 | the tree when we're done. */ | |
9add0f1b TT |
4265 | ccmd = bs->commands; |
4266 | bs->commands = NULL; | |
abf85f46 JK |
4267 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4268 | cmd = ccmd ? ccmd->commands : NULL; | |
4269 | if (command_line_is_silent (cmd)) | |
4270 | { | |
4271 | /* The action has been already done by bpstat_stop_status. */ | |
4272 | cmd = cmd->next; | |
4273 | } | |
6c50ab1c | 4274 | |
c906108c SS |
4275 | while (cmd != NULL) |
4276 | { | |
4277 | execute_control_command (cmd); | |
4278 | ||
4279 | if (breakpoint_proceeded) | |
4280 | break; | |
4281 | else | |
4282 | cmd = cmd->next; | |
4283 | } | |
6c50ab1c JB |
4284 | |
4285 | /* We can free this command tree now. */ | |
4286 | do_cleanups (this_cmd_tree_chain); | |
4287 | ||
c906108c | 4288 | if (breakpoint_proceeded) |
32c1e744 VP |
4289 | { |
4290 | if (target_can_async_p ()) | |
347bddb7 PA |
4291 | /* If we are in async mode, then the target might be still |
4292 | running, not stopped at any breakpoint, so nothing for | |
4293 | us to do here -- just return to the event loop. */ | |
4294 | ; | |
32c1e744 VP |
4295 | else |
4296 | /* In sync mode, when execute_control_command returns | |
4297 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4298 | Breakpoint commands for that stop were not run, since |
4299 | execute_command does not run breakpoint commands -- | |
4300 | only command_line_handler does, but that one is not | |
4301 | involved in execution of breakpoint commands. So, we | |
4302 | can now execute breakpoint commands. It should be | |
4303 | noted that making execute_command do bpstat actions is | |
4304 | not an option -- in this case we'll have recursive | |
4305 | invocation of bpstat for each breakpoint with a | |
4306 | command, and can easily blow up GDB stack. Instead, we | |
4307 | return true, which will trigger the caller to recall us | |
4308 | with the new stop_bpstat. */ | |
4309 | again = 1; | |
4310 | break; | |
32c1e744 | 4311 | } |
c906108c | 4312 | } |
c2b8ed2c | 4313 | do_cleanups (old_chain); |
347bddb7 PA |
4314 | return again; |
4315 | } | |
4316 | ||
4317 | void | |
4318 | bpstat_do_actions (void) | |
4319 | { | |
353d1d73 JK |
4320 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4321 | ||
347bddb7 PA |
4322 | /* Do any commands attached to breakpoint we are stopped at. */ |
4323 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4324 | && target_has_execution | |
4325 | && !is_exited (inferior_ptid) | |
4326 | && !is_executing (inferior_ptid)) | |
4327 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4328 | and only return when it is stopped at the next breakpoint, we | |
4329 | keep doing breakpoint actions until it returns false to | |
4330 | indicate the inferior was not resumed. */ | |
16c381f0 | 4331 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4332 | break; |
353d1d73 JK |
4333 | |
4334 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4335 | } |
4336 | ||
fa4727a6 DJ |
4337 | /* Print out the (old or new) value associated with a watchpoint. */ |
4338 | ||
4339 | static void | |
4340 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4341 | { | |
4342 | if (val == NULL) | |
4343 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4344 | else | |
79a45b7d TT |
4345 | { |
4346 | struct value_print_options opts; | |
4347 | get_user_print_options (&opts); | |
4348 | value_print (val, stream, &opts); | |
4349 | } | |
fa4727a6 DJ |
4350 | } |
4351 | ||
e514a9d6 | 4352 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4353 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4354 | 'print_it' in the bpstat structure. Under some circumstances we |
4355 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4356 | normal_stop(). */ |
e514a9d6 JM |
4357 | |
4358 | static enum print_stop_action | |
4359 | print_bp_stop_message (bpstat bs) | |
4360 | { | |
4361 | switch (bs->print_it) | |
4362 | { | |
4363 | case print_it_noop: | |
4a64f543 | 4364 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4365 | return PRINT_UNKNOWN; |
4366 | break; | |
4367 | ||
4368 | case print_it_done: | |
4369 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4370 | relevant messages. */ |
e514a9d6 JM |
4371 | return PRINT_SRC_AND_LOC; |
4372 | break; | |
4373 | ||
4374 | case print_it_normal: | |
4f8d1dc6 | 4375 | { |
f431efe5 PA |
4376 | struct breakpoint *b = bs->breakpoint_at; |
4377 | ||
1a6a67de TJB |
4378 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4379 | which has since been deleted. */ | |
4380 | if (b == NULL) | |
4381 | return PRINT_UNKNOWN; | |
4382 | ||
348d480f PA |
4383 | /* Normal case. Call the breakpoint's print_it method. */ |
4384 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4385 | } |
348d480f | 4386 | break; |
3086aeae | 4387 | |
e514a9d6 | 4388 | default: |
8e65ff28 | 4389 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4390 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4391 | break; |
c906108c | 4392 | } |
c906108c SS |
4393 | } |
4394 | ||
edcc5120 TT |
4395 | /* A helper function that prints a shared library stopped event. */ |
4396 | ||
4397 | static void | |
4398 | print_solib_event (int is_catchpoint) | |
4399 | { | |
4400 | int any_deleted | |
4401 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4402 | int any_added | |
4403 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4404 | ||
4405 | if (!is_catchpoint) | |
4406 | { | |
4407 | if (any_added || any_deleted) | |
4408 | ui_out_text (current_uiout, | |
4409 | _("Stopped due to shared library event:\n")); | |
4410 | else | |
4411 | ui_out_text (current_uiout, | |
4412 | _("Stopped due to shared library event (no " | |
4413 | "libraries added or removed)\n")); | |
4414 | } | |
4415 | ||
4416 | if (ui_out_is_mi_like_p (current_uiout)) | |
4417 | ui_out_field_string (current_uiout, "reason", | |
4418 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4419 | ||
4420 | if (any_deleted) | |
4421 | { | |
4422 | struct cleanup *cleanup; | |
4423 | char *name; | |
4424 | int ix; | |
4425 | ||
4426 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4427 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4428 | "removed"); | |
4429 | for (ix = 0; | |
4430 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4431 | ix, name); | |
4432 | ++ix) | |
4433 | { | |
4434 | if (ix > 0) | |
4435 | ui_out_text (current_uiout, " "); | |
4436 | ui_out_field_string (current_uiout, "library", name); | |
4437 | ui_out_text (current_uiout, "\n"); | |
4438 | } | |
4439 | ||
4440 | do_cleanups (cleanup); | |
4441 | } | |
4442 | ||
4443 | if (any_added) | |
4444 | { | |
4445 | struct so_list *iter; | |
4446 | int ix; | |
4447 | struct cleanup *cleanup; | |
4448 | ||
4449 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4450 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4451 | "added"); | |
4452 | for (ix = 0; | |
4453 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4454 | ix, iter); | |
4455 | ++ix) | |
4456 | { | |
4457 | if (ix > 0) | |
4458 | ui_out_text (current_uiout, " "); | |
4459 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4460 | ui_out_text (current_uiout, "\n"); | |
4461 | } | |
4462 | ||
4463 | do_cleanups (cleanup); | |
4464 | } | |
4465 | } | |
4466 | ||
e514a9d6 JM |
4467 | /* Print a message indicating what happened. This is called from |
4468 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4469 | list - a list of the eventpoints that caused this stop. KIND is |
4470 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4471 | routine calls the generic print routine for printing a message |
4472 | about reasons for stopping. This will print (for example) the | |
4473 | "Breakpoint n," part of the output. The return value of this | |
4474 | routine is one of: | |
c906108c | 4475 | |
4a64f543 | 4476 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4477 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4478 | code to print the location. An example is |
c5aa993b JM |
4479 | "Breakpoint 1, " which should be followed by |
4480 | the location. | |
917317f4 | 4481 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4482 | to also print the location part of the message. |
4483 | An example is the catch/throw messages, which | |
4a64f543 | 4484 | don't require a location appended to the end. |
917317f4 | 4485 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4486 | further info to be printed. */ |
c906108c | 4487 | |
917317f4 | 4488 | enum print_stop_action |
36dfb11c | 4489 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4490 | { |
4491 | int val; | |
c5aa993b | 4492 | |
c906108c | 4493 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4494 | (Currently all watchpoints go on the bpstat whether hit or not. |
4495 | That probably could (should) be changed, provided care is taken | |
c906108c | 4496 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4497 | for (; bs; bs = bs->next) |
4498 | { | |
4499 | val = print_bp_stop_message (bs); | |
4500 | if (val == PRINT_SRC_ONLY | |
4501 | || val == PRINT_SRC_AND_LOC | |
4502 | || val == PRINT_NOTHING) | |
4503 | return val; | |
4504 | } | |
c906108c | 4505 | |
36dfb11c TT |
4506 | /* If we had hit a shared library event breakpoint, |
4507 | print_bp_stop_message would print out this message. If we hit an | |
4508 | OS-level shared library event, do the same thing. */ | |
4509 | if (kind == TARGET_WAITKIND_LOADED) | |
4510 | { | |
edcc5120 | 4511 | print_solib_event (0); |
36dfb11c TT |
4512 | return PRINT_NOTHING; |
4513 | } | |
4514 | ||
e514a9d6 | 4515 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4516 | with and nothing was printed. */ |
917317f4 | 4517 | return PRINT_UNKNOWN; |
c906108c SS |
4518 | } |
4519 | ||
4a64f543 MS |
4520 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
4521 | used inside a catch_errors to evaluate the breakpoint condition. | |
4522 | The argument is a "struct expression *" that has been cast to a | |
4523 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
4524 | |
4525 | static int | |
4efb68b1 | 4526 | breakpoint_cond_eval (void *exp) |
c906108c | 4527 | { |
278cd55f | 4528 | struct value *mark = value_mark (); |
c5aa993b | 4529 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4530 | |
c906108c SS |
4531 | value_free_to_mark (mark); |
4532 | return i; | |
4533 | } | |
4534 | ||
5760d0ab | 4535 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4536 | |
4537 | static bpstat | |
5760d0ab | 4538 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4539 | { |
4540 | bpstat bs; | |
4541 | ||
4542 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4543 | bs->next = NULL; |
4544 | **bs_link_pointer = bs; | |
4545 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4546 | bs->breakpoint_at = bl->owner; |
4547 | bs->bp_location_at = bl; | |
4548 | incref_bp_location (bl); | |
c906108c SS |
4549 | /* If the condition is false, etc., don't do the commands. */ |
4550 | bs->commands = NULL; | |
4551 | bs->old_val = NULL; | |
4552 | bs->print_it = print_it_normal; | |
4553 | return bs; | |
4554 | } | |
4555 | \f | |
d983da9c DJ |
4556 | /* The target has stopped with waitstatus WS. Check if any hardware |
4557 | watchpoints have triggered, according to the target. */ | |
4558 | ||
4559 | int | |
4560 | watchpoints_triggered (struct target_waitstatus *ws) | |
4561 | { | |
d92524f1 | 4562 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4563 | CORE_ADDR addr; |
4564 | struct breakpoint *b; | |
4565 | ||
4566 | if (!stopped_by_watchpoint) | |
4567 | { | |
4568 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4569 | as not triggered. */ | |
4570 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4571 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4572 | { |
4573 | struct watchpoint *w = (struct watchpoint *) b; | |
4574 | ||
4575 | w->watchpoint_triggered = watch_triggered_no; | |
4576 | } | |
d983da9c DJ |
4577 | |
4578 | return 0; | |
4579 | } | |
4580 | ||
4581 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4582 | { | |
4583 | /* We were stopped by a watchpoint, but we don't know where. | |
4584 | Mark all watchpoints as unknown. */ | |
4585 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4586 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4587 | { |
4588 | struct watchpoint *w = (struct watchpoint *) b; | |
4589 | ||
4590 | w->watchpoint_triggered = watch_triggered_unknown; | |
4591 | } | |
d983da9c DJ |
4592 | |
4593 | return stopped_by_watchpoint; | |
4594 | } | |
4595 | ||
4596 | /* The target could report the data address. Mark watchpoints | |
4597 | affected by this data address as triggered, and all others as not | |
4598 | triggered. */ | |
4599 | ||
4600 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4601 | if (is_hardware_watchpoint (b)) |
d983da9c | 4602 | { |
3a5c3e22 | 4603 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4604 | struct bp_location *loc; |
d983da9c | 4605 | |
3a5c3e22 | 4606 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4607 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4608 | { |
3a5c3e22 | 4609 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4610 | { |
3a5c3e22 PA |
4611 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4612 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4613 | |
4614 | if (newaddr == start) | |
4615 | { | |
3a5c3e22 | 4616 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4617 | break; |
4618 | } | |
4619 | } | |
4620 | /* Exact match not required. Within range is sufficient. */ | |
4621 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4622 | addr, loc->address, | |
4623 | loc->length)) | |
4624 | { | |
3a5c3e22 | 4625 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4626 | break; |
4627 | } | |
4628 | } | |
d983da9c DJ |
4629 | } |
4630 | ||
4631 | return 1; | |
4632 | } | |
4633 | ||
c906108c SS |
4634 | /* Possible return values for watchpoint_check (this can't be an enum |
4635 | because of check_errors). */ | |
4636 | /* The watchpoint has been deleted. */ | |
4637 | #define WP_DELETED 1 | |
4638 | /* The value has changed. */ | |
4639 | #define WP_VALUE_CHANGED 2 | |
4640 | /* The value has not changed. */ | |
4641 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4642 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4643 | #define WP_IGNORE 4 | |
c906108c SS |
4644 | |
4645 | #define BP_TEMPFLAG 1 | |
4646 | #define BP_HARDWAREFLAG 2 | |
4647 | ||
4a64f543 MS |
4648 | /* Evaluate watchpoint condition expression and check if its value |
4649 | changed. | |
553e4c11 JB |
4650 | |
4651 | P should be a pointer to struct bpstat, but is defined as a void * | |
4652 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4653 | |
4654 | static int | |
4efb68b1 | 4655 | watchpoint_check (void *p) |
c906108c SS |
4656 | { |
4657 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4658 | struct watchpoint *b; |
c906108c SS |
4659 | struct frame_info *fr; |
4660 | int within_current_scope; | |
4661 | ||
f431efe5 | 4662 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4663 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4664 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4665 | |
f6bc2008 PA |
4666 | /* If this is a local watchpoint, we only want to check if the |
4667 | watchpoint frame is in scope if the current thread is the thread | |
4668 | that was used to create the watchpoint. */ | |
4669 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4670 | return WP_IGNORE; |
f6bc2008 | 4671 | |
c906108c SS |
4672 | if (b->exp_valid_block == NULL) |
4673 | within_current_scope = 1; | |
4674 | else | |
4675 | { | |
edb3359d DJ |
4676 | struct frame_info *frame = get_current_frame (); |
4677 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4678 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4679 | ||
4a64f543 MS |
4680 | /* in_function_epilogue_p() returns a non-zero value if we're |
4681 | still in the function but the stack frame has already been | |
4682 | invalidated. Since we can't rely on the values of local | |
4683 | variables after the stack has been destroyed, we are treating | |
4684 | the watchpoint in that state as `not changed' without further | |
4685 | checking. Don't mark watchpoints as changed if the current | |
4686 | frame is in an epilogue - even if they are in some other | |
4687 | frame, our view of the stack is likely to be wrong and | |
4688 | frame_find_by_id could error out. */ | |
a0f49112 | 4689 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 4690 | return WP_IGNORE; |
a0f49112 | 4691 | |
101dcfbe | 4692 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4693 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4694 | |
4695 | /* If we've gotten confused in the unwinder, we might have | |
4696 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4697 | if (within_current_scope) |
4698 | { | |
4699 | struct symbol *function; | |
4700 | ||
4701 | function = get_frame_function (fr); | |
4702 | if (function == NULL | |
4703 | || !contained_in (b->exp_valid_block, | |
4704 | SYMBOL_BLOCK_VALUE (function))) | |
4705 | within_current_scope = 0; | |
4706 | } | |
69fbadd5 | 4707 | |
edb3359d | 4708 | if (within_current_scope) |
c906108c SS |
4709 | /* If we end up stopping, the current frame will get selected |
4710 | in normal_stop. So this call to select_frame won't affect | |
4711 | the user. */ | |
0f7d239c | 4712 | select_frame (fr); |
c906108c | 4713 | } |
c5aa993b | 4714 | |
c906108c SS |
4715 | if (within_current_scope) |
4716 | { | |
4a64f543 MS |
4717 | /* We use value_{,free_to_}mark because it could be a *long* |
4718 | time before we return to the command level and call | |
4719 | free_all_values. We can't call free_all_values because we | |
4720 | might be in the middle of evaluating a function call. */ | |
c906108c | 4721 | |
0cf6dd15 | 4722 | int pc = 0; |
9c06b0b4 | 4723 | struct value *mark; |
fa4727a6 DJ |
4724 | struct value *new_val; |
4725 | ||
3a5c3e22 | 4726 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
4727 | /* Since we don't know the exact trigger address (from |
4728 | stopped_data_address), just tell the user we've triggered | |
4729 | a mask watchpoint. */ | |
4730 | return WP_VALUE_CHANGED; | |
4731 | ||
4732 | mark = value_mark (); | |
0cf6dd15 | 4733 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 4734 | |
4a64f543 MS |
4735 | /* We use value_equal_contents instead of value_equal because |
4736 | the latter coerces an array to a pointer, thus comparing just | |
4737 | the address of the array instead of its contents. This is | |
4738 | not what we want. */ | |
fa4727a6 | 4739 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4740 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4741 | { |
fa4727a6 DJ |
4742 | if (new_val != NULL) |
4743 | { | |
4744 | release_value (new_val); | |
4745 | value_free_to_mark (mark); | |
4746 | } | |
c906108c SS |
4747 | bs->old_val = b->val; |
4748 | b->val = new_val; | |
fa4727a6 | 4749 | b->val_valid = 1; |
c906108c SS |
4750 | return WP_VALUE_CHANGED; |
4751 | } | |
4752 | else | |
4753 | { | |
60e1c644 | 4754 | /* Nothing changed. */ |
c906108c | 4755 | value_free_to_mark (mark); |
c906108c SS |
4756 | return WP_VALUE_NOT_CHANGED; |
4757 | } | |
4758 | } | |
4759 | else | |
4760 | { | |
79a45e25 PA |
4761 | struct ui_out *uiout = current_uiout; |
4762 | ||
c906108c | 4763 | /* This seems like the only logical thing to do because |
c5aa993b JM |
4764 | if we temporarily ignored the watchpoint, then when |
4765 | we reenter the block in which it is valid it contains | |
4766 | garbage (in the case of a function, it may have two | |
4767 | garbage values, one before and one after the prologue). | |
4768 | So we can't even detect the first assignment to it and | |
4769 | watch after that (since the garbage may or may not equal | |
4770 | the first value assigned). */ | |
348d480f PA |
4771 | /* We print all the stop information in |
4772 | breakpoint_ops->print_it, but in this case, by the time we | |
4773 | call breakpoint_ops->print_it this bp will be deleted | |
4774 | already. So we have no choice but print the information | |
4775 | here. */ | |
9dc5e2a9 | 4776 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
4777 | ui_out_field_string |
4778 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 4779 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 4780 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
4781 | ui_out_text (uiout, |
4782 | " deleted because the program has left the block in\n\ | |
8b93c638 | 4783 | which its expression is valid.\n"); |
4ce44c66 | 4784 | |
cdac0397 | 4785 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 4786 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 4787 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4788 | |
4789 | return WP_DELETED; | |
4790 | } | |
4791 | } | |
4792 | ||
18a18393 | 4793 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4794 | breakpoint location BL. This function does not check if we should |
4795 | stop, only if BL explains the stop. */ | |
4796 | ||
18a18393 | 4797 | static int |
6c95b8df | 4798 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
4799 | struct address_space *aspace, CORE_ADDR bp_addr, |
4800 | const struct target_waitstatus *ws) | |
18a18393 VP |
4801 | { |
4802 | struct breakpoint *b = bl->owner; | |
4803 | ||
348d480f | 4804 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4805 | gdb_assert (b != NULL); |
4806 | ||
09ac7c10 | 4807 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4808 | } |
4809 | ||
3a5c3e22 PA |
4810 | /* Determine if the watched values have actually changed, and we |
4811 | should stop. If not, set BS->stop to 0. */ | |
4812 | ||
18a18393 VP |
4813 | static void |
4814 | bpstat_check_watchpoint (bpstat bs) | |
4815 | { | |
2bdf28a0 | 4816 | const struct bp_location *bl; |
3a5c3e22 | 4817 | struct watchpoint *b; |
2bdf28a0 JK |
4818 | |
4819 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4820 | bl = bs->bp_location_at; |
2bdf28a0 | 4821 | gdb_assert (bl != NULL); |
3a5c3e22 | 4822 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4823 | gdb_assert (b != NULL); |
18a18393 | 4824 | |
18a18393 | 4825 | { |
18a18393 VP |
4826 | int must_check_value = 0; |
4827 | ||
3a5c3e22 | 4828 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
4829 | /* For a software watchpoint, we must always check the |
4830 | watched value. */ | |
4831 | must_check_value = 1; | |
4832 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4833 | /* We have a hardware watchpoint (read, write, or access) | |
4834 | and the target earlier reported an address watched by | |
4835 | this watchpoint. */ | |
4836 | must_check_value = 1; | |
4837 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 4838 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
4839 | /* We were stopped by a hardware watchpoint, but the target could |
4840 | not report the data address. We must check the watchpoint's | |
4841 | value. Access and read watchpoints are out of luck; without | |
4842 | a data address, we can't figure it out. */ | |
4843 | must_check_value = 1; | |
3a5c3e22 | 4844 | |
18a18393 VP |
4845 | if (must_check_value) |
4846 | { | |
3e43a32a MS |
4847 | char *message |
4848 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 4849 | b->base.number); |
18a18393 VP |
4850 | struct cleanup *cleanups = make_cleanup (xfree, message); |
4851 | int e = catch_errors (watchpoint_check, bs, message, | |
4852 | RETURN_MASK_ALL); | |
4853 | do_cleanups (cleanups); | |
4854 | switch (e) | |
4855 | { | |
4856 | case WP_DELETED: | |
4857 | /* We've already printed what needs to be printed. */ | |
4858 | bs->print_it = print_it_done; | |
4859 | /* Stop. */ | |
4860 | break; | |
60e1c644 PA |
4861 | case WP_IGNORE: |
4862 | bs->print_it = print_it_noop; | |
4863 | bs->stop = 0; | |
4864 | break; | |
18a18393 | 4865 | case WP_VALUE_CHANGED: |
3a5c3e22 | 4866 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 4867 | { |
85d721b8 PA |
4868 | /* There are two cases to consider here: |
4869 | ||
4a64f543 | 4870 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
4871 | In that case, trust the target, and always report |
4872 | the watchpoint hit to the user. Even though | |
4873 | reads don't cause value changes, the value may | |
4874 | have changed since the last time it was read, and | |
4875 | since we're not trapping writes, we will not see | |
4876 | those, and as such we should ignore our notion of | |
4877 | old value. | |
4878 | ||
4a64f543 | 4879 | 2. We're watching the triggered memory for both |
85d721b8 PA |
4880 | reads and writes. There are two ways this may |
4881 | happen: | |
4882 | ||
4a64f543 | 4883 | 2.1. This is a target that can't break on data |
85d721b8 PA |
4884 | reads only, but can break on accesses (reads or |
4885 | writes), such as e.g., x86. We detect this case | |
4886 | at the time we try to insert read watchpoints. | |
4887 | ||
4a64f543 | 4888 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
4889 | watchpoints, but, the user set an access or write |
4890 | watchpoint watching the same memory as this read | |
4891 | watchpoint. | |
4892 | ||
4893 | If we're watching memory writes as well as reads, | |
4894 | ignore watchpoint hits when we find that the | |
4895 | value hasn't changed, as reads don't cause | |
4896 | changes. This still gives false positives when | |
4897 | the program writes the same value to memory as | |
4898 | what there was already in memory (we will confuse | |
4899 | it for a read), but it's much better than | |
4900 | nothing. */ | |
4901 | ||
4902 | int other_write_watchpoint = 0; | |
4903 | ||
4904 | if (bl->watchpoint_type == hw_read) | |
4905 | { | |
4906 | struct breakpoint *other_b; | |
4907 | ||
4908 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
4909 | if (other_b->type == bp_hardware_watchpoint |
4910 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 4911 | { |
3a5c3e22 PA |
4912 | struct watchpoint *other_w = |
4913 | (struct watchpoint *) other_b; | |
4914 | ||
4915 | if (other_w->watchpoint_triggered | |
4916 | == watch_triggered_yes) | |
4917 | { | |
4918 | other_write_watchpoint = 1; | |
4919 | break; | |
4920 | } | |
85d721b8 PA |
4921 | } |
4922 | } | |
4923 | ||
4924 | if (other_write_watchpoint | |
4925 | || bl->watchpoint_type == hw_access) | |
4926 | { | |
4927 | /* We're watching the same memory for writes, | |
4928 | and the value changed since the last time we | |
4929 | updated it, so this trap must be for a write. | |
4930 | Ignore it. */ | |
4931 | bs->print_it = print_it_noop; | |
4932 | bs->stop = 0; | |
4933 | } | |
18a18393 VP |
4934 | } |
4935 | break; | |
4936 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
4937 | if (b->base.type == bp_hardware_watchpoint |
4938 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
4939 | { |
4940 | /* Don't stop: write watchpoints shouldn't fire if | |
4941 | the value hasn't changed. */ | |
4942 | bs->print_it = print_it_noop; | |
4943 | bs->stop = 0; | |
4944 | } | |
4945 | /* Stop. */ | |
4946 | break; | |
4947 | default: | |
4948 | /* Can't happen. */ | |
4949 | case 0: | |
4950 | /* Error from catch_errors. */ | |
3a5c3e22 | 4951 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 4952 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
4953 | /* We've already printed what needs to be printed. */ |
4954 | bs->print_it = print_it_done; | |
4955 | break; | |
4956 | } | |
4957 | } | |
4958 | else /* must_check_value == 0 */ | |
4959 | { | |
4960 | /* This is a case where some watchpoint(s) triggered, but | |
4961 | not at the address of this watchpoint, or else no | |
4962 | watchpoint triggered after all. So don't print | |
4963 | anything for this watchpoint. */ | |
4964 | bs->print_it = print_it_noop; | |
4965 | bs->stop = 0; | |
4966 | } | |
4967 | } | |
4968 | } | |
4969 | ||
4970 | ||
4971 | /* Check conditions (condition proper, frame, thread and ignore count) | |
4972 | of breakpoint referred to by BS. If we should not stop for this | |
4973 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 4974 | |
18a18393 VP |
4975 | static void |
4976 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
4977 | { | |
4978 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
4979 | const struct bp_location *bl; |
4980 | struct breakpoint *b; | |
4981 | ||
4982 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4983 | bl = bs->bp_location_at; |
2bdf28a0 | 4984 | gdb_assert (bl != NULL); |
f431efe5 | 4985 | b = bs->breakpoint_at; |
2bdf28a0 | 4986 | gdb_assert (b != NULL); |
18a18393 | 4987 | |
b775012e LM |
4988 | /* Even if the target evaluated the condition on its end and notified GDB, we |
4989 | need to do so again since GDB does not know if we stopped due to a | |
4990 | breakpoint or a single step breakpoint. */ | |
4991 | ||
18a18393 | 4992 | if (frame_id_p (b->frame_id) |
edb3359d | 4993 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
4994 | bs->stop = 0; |
4995 | else if (bs->stop) | |
4996 | { | |
4997 | int value_is_zero = 0; | |
60e1c644 PA |
4998 | struct expression *cond; |
4999 | ||
7371cf6d PM |
5000 | /* Evaluate Python breakpoints that have a "stop" |
5001 | method implemented. */ | |
5002 | if (b->py_bp_object) | |
5003 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
5004 | ||
60e1c644 | 5005 | if (is_watchpoint (b)) |
3a5c3e22 PA |
5006 | { |
5007 | struct watchpoint *w = (struct watchpoint *) b; | |
5008 | ||
5009 | cond = w->cond_exp; | |
5010 | } | |
60e1c644 PA |
5011 | else |
5012 | cond = bl->cond; | |
5013 | ||
f431efe5 | 5014 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 5015 | { |
60e1c644 | 5016 | int within_current_scope = 1; |
3a5c3e22 | 5017 | struct watchpoint * w; |
60e1c644 | 5018 | |
c5bc3a77 DJ |
5019 | /* We use value_mark and value_free_to_mark because it could |
5020 | be a long time before we return to the command level and | |
5021 | call free_all_values. We can't call free_all_values | |
5022 | because we might be in the middle of evaluating a | |
5023 | function call. */ | |
5024 | struct value *mark = value_mark (); | |
5025 | ||
3a5c3e22 PA |
5026 | if (is_watchpoint (b)) |
5027 | w = (struct watchpoint *) b; | |
5028 | else | |
5029 | w = NULL; | |
5030 | ||
edb3359d DJ |
5031 | /* Need to select the frame, with all that implies so that |
5032 | the conditions will have the right context. Because we | |
5033 | use the frame, we will not see an inlined function's | |
5034 | variables when we arrive at a breakpoint at the start | |
5035 | of the inlined function; the current frame will be the | |
5036 | call site. */ | |
3a5c3e22 | 5037 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
5038 | select_frame (get_current_frame ()); |
5039 | else | |
5040 | { | |
5041 | struct frame_info *frame; | |
5042 | ||
5043 | /* For local watchpoint expressions, which particular | |
5044 | instance of a local is being watched matters, so we | |
5045 | keep track of the frame to evaluate the expression | |
5046 | in. To evaluate the condition however, it doesn't | |
5047 | really matter which instantiation of the function | |
5048 | where the condition makes sense triggers the | |
5049 | watchpoint. This allows an expression like "watch | |
5050 | global if q > 10" set in `func', catch writes to | |
5051 | global on all threads that call `func', or catch | |
5052 | writes on all recursive calls of `func' by a single | |
5053 | thread. We simply always evaluate the condition in | |
5054 | the innermost frame that's executing where it makes | |
5055 | sense to evaluate the condition. It seems | |
5056 | intuitive. */ | |
3a5c3e22 | 5057 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
5058 | if (frame != NULL) |
5059 | select_frame (frame); | |
5060 | else | |
5061 | within_current_scope = 0; | |
5062 | } | |
5063 | if (within_current_scope) | |
5064 | value_is_zero | |
5065 | = catch_errors (breakpoint_cond_eval, cond, | |
5066 | "Error in testing breakpoint condition:\n", | |
5067 | RETURN_MASK_ALL); | |
5068 | else | |
5069 | { | |
5070 | warning (_("Watchpoint condition cannot be tested " | |
5071 | "in the current scope")); | |
5072 | /* If we failed to set the right context for this | |
5073 | watchpoint, unconditionally report it. */ | |
5074 | value_is_zero = 0; | |
5075 | } | |
4a64f543 | 5076 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 5077 | value_free_to_mark (mark); |
18a18393 | 5078 | } |
60e1c644 PA |
5079 | |
5080 | if (cond && value_is_zero) | |
18a18393 VP |
5081 | { |
5082 | bs->stop = 0; | |
5083 | } | |
5084 | else if (b->thread != -1 && b->thread != thread_id) | |
5085 | { | |
5086 | bs->stop = 0; | |
5087 | } | |
5088 | else if (b->ignore_count > 0) | |
5089 | { | |
5090 | b->ignore_count--; | |
5091 | annotate_ignore_count_change (); | |
5092 | bs->stop = 0; | |
4a64f543 | 5093 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 5094 | ++(b->hit_count); |
8d3788bd | 5095 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
5096 | } |
5097 | } | |
5098 | } | |
5099 | ||
5100 | ||
9709f61c | 5101 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5102 | BP_ADDR in thread PTID. |
c906108c | 5103 | |
d983da9c | 5104 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5105 | don't understand this stop. Result is a chain of bpstat's such |
5106 | that: | |
c906108c | 5107 | |
c5aa993b | 5108 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5109 | |
c5aa993b | 5110 | if we understand why we stopped, the result is not null. |
c906108c | 5111 | |
c5aa993b JM |
5112 | Each element of the chain refers to a particular breakpoint or |
5113 | watchpoint at which we have stopped. (We may have stopped for | |
5114 | several reasons concurrently.) | |
c906108c | 5115 | |
c5aa993b JM |
5116 | Each element of the chain has valid next, breakpoint_at, |
5117 | commands, FIXME??? fields. */ | |
c906108c SS |
5118 | |
5119 | bpstat | |
6c95b8df | 5120 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5121 | CORE_ADDR bp_addr, ptid_t ptid, |
5122 | const struct target_waitstatus *ws) | |
c906108c | 5123 | { |
0d381245 | 5124 | struct breakpoint *b = NULL; |
afe38095 | 5125 | struct bp_location *bl; |
20874c92 | 5126 | struct bp_location *loc; |
5760d0ab JK |
5127 | /* First item of allocated bpstat's. */ |
5128 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5129 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5130 | bpstat bs; |
20874c92 | 5131 | int ix; |
429374b8 | 5132 | int need_remove_insert; |
f431efe5 | 5133 | int removed_any; |
c906108c | 5134 | |
f431efe5 PA |
5135 | /* First, build the bpstat chain with locations that explain a |
5136 | target stop, while being careful to not set the target running, | |
5137 | as that may invalidate locations (in particular watchpoint | |
5138 | locations are recreated). Resuming will happen here with | |
5139 | breakpoint conditions or watchpoint expressions that include | |
5140 | inferior function calls. */ | |
c5aa993b | 5141 | |
429374b8 JK |
5142 | ALL_BREAKPOINTS (b) |
5143 | { | |
5144 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
5145 | continue; | |
a5606eee | 5146 | |
429374b8 JK |
5147 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5148 | { | |
4a64f543 MS |
5149 | /* For hardware watchpoints, we look only at the first |
5150 | location. The watchpoint_check function will work on the | |
5151 | entire expression, not the individual locations. For | |
5152 | read watchpoints, the watchpoints_triggered function has | |
5153 | checked all locations already. */ | |
429374b8 JK |
5154 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5155 | break; | |
18a18393 | 5156 | |
429374b8 JK |
5157 | if (bl->shlib_disabled) |
5158 | continue; | |
c5aa993b | 5159 | |
09ac7c10 | 5160 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5161 | continue; |
c5aa993b | 5162 | |
4a64f543 MS |
5163 | /* Come here if it's a watchpoint, or if the break address |
5164 | matches. */ | |
c5aa993b | 5165 | |
4a64f543 MS |
5166 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5167 | explain stop. */ | |
c5aa993b | 5168 | |
f431efe5 PA |
5169 | /* Assume we stop. Should we find a watchpoint that is not |
5170 | actually triggered, or if the condition of the breakpoint | |
5171 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5172 | bs->stop = 1; |
5173 | bs->print = 1; | |
d983da9c | 5174 | |
f431efe5 PA |
5175 | /* If this is a scope breakpoint, mark the associated |
5176 | watchpoint as triggered so that we will handle the | |
5177 | out-of-scope event. We'll get to the watchpoint next | |
5178 | iteration. */ | |
d0fb5eae | 5179 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5180 | { |
5181 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5182 | ||
5183 | w->watchpoint_triggered = watch_triggered_yes; | |
5184 | } | |
f431efe5 PA |
5185 | } |
5186 | } | |
5187 | ||
5188 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
5189 | { | |
f1310107 | 5190 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 5191 | { |
5760d0ab | 5192 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
5193 | /* For hits of moribund locations, we should just proceed. */ |
5194 | bs->stop = 0; | |
5195 | bs->print = 0; | |
5196 | bs->print_it = print_it_noop; | |
5197 | } | |
5198 | } | |
5199 | ||
edcc5120 TT |
5200 | /* A bit of special processing for shlib breakpoints. We need to |
5201 | process solib loading here, so that the lists of loaded and | |
5202 | unloaded libraries are correct before we handle "catch load" and | |
5203 | "catch unload". */ | |
5204 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5205 | { | |
5d268276 | 5206 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5207 | { |
5208 | handle_solib_event (); | |
5209 | break; | |
5210 | } | |
5211 | } | |
5212 | ||
f431efe5 PA |
5213 | /* Now go through the locations that caused the target to stop, and |
5214 | check whether we're interested in reporting this stop to higher | |
5215 | layers, or whether we should resume the target transparently. */ | |
5216 | ||
5217 | removed_any = 0; | |
5218 | ||
5760d0ab | 5219 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5220 | { |
5221 | if (!bs->stop) | |
5222 | continue; | |
5223 | ||
f431efe5 | 5224 | b = bs->breakpoint_at; |
348d480f PA |
5225 | b->ops->check_status (bs); |
5226 | if (bs->stop) | |
28010a5d | 5227 | { |
348d480f | 5228 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5229 | |
429374b8 JK |
5230 | if (bs->stop) |
5231 | { | |
5232 | ++(b->hit_count); | |
8d3788bd | 5233 | observer_notify_breakpoint_modified (b); |
c906108c | 5234 | |
4a64f543 | 5235 | /* We will stop here. */ |
429374b8 JK |
5236 | if (b->disposition == disp_disable) |
5237 | { | |
816338b5 SS |
5238 | --(b->enable_count); |
5239 | if (b->enable_count <= 0 | |
5240 | && b->enable_state != bp_permanent) | |
429374b8 | 5241 | b->enable_state = bp_disabled; |
f431efe5 | 5242 | removed_any = 1; |
429374b8 JK |
5243 | } |
5244 | if (b->silent) | |
5245 | bs->print = 0; | |
5246 | bs->commands = b->commands; | |
9add0f1b | 5247 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5248 | if (command_line_is_silent (bs->commands |
5249 | ? bs->commands->commands : NULL)) | |
5250 | bs->print = 0; | |
429374b8 JK |
5251 | } |
5252 | ||
348d480f | 5253 | } |
a9b3a50f PA |
5254 | |
5255 | /* Print nothing for this entry if we don't stop or don't | |
5256 | print. */ | |
5257 | if (!bs->stop || !bs->print) | |
5258 | bs->print_it = print_it_noop; | |
429374b8 | 5259 | } |
876fa593 | 5260 | |
d983da9c DJ |
5261 | /* If we aren't stopping, the value of some hardware watchpoint may |
5262 | not have changed, but the intermediate memory locations we are | |
5263 | watching may have. Don't bother if we're stopping; this will get | |
5264 | done later. */ | |
d832cb68 | 5265 | need_remove_insert = 0; |
5760d0ab JK |
5266 | if (! bpstat_causes_stop (bs_head)) |
5267 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5268 | if (!bs->stop |
f431efe5 PA |
5269 | && bs->breakpoint_at |
5270 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5271 | { |
3a5c3e22 PA |
5272 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5273 | ||
5274 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5275 | need_remove_insert = 1; |
d983da9c DJ |
5276 | } |
5277 | ||
d832cb68 | 5278 | if (need_remove_insert) |
2d134ed3 | 5279 | update_global_location_list (1); |
f431efe5 PA |
5280 | else if (removed_any) |
5281 | update_global_location_list (0); | |
d832cb68 | 5282 | |
5760d0ab | 5283 | return bs_head; |
c906108c | 5284 | } |
628fe4e4 JK |
5285 | |
5286 | static void | |
5287 | handle_jit_event (void) | |
5288 | { | |
5289 | struct frame_info *frame; | |
5290 | struct gdbarch *gdbarch; | |
5291 | ||
5292 | /* Switch terminal for any messages produced by | |
5293 | breakpoint_re_set. */ | |
5294 | target_terminal_ours_for_output (); | |
5295 | ||
5296 | frame = get_current_frame (); | |
5297 | gdbarch = get_frame_arch (frame); | |
5298 | ||
5299 | jit_event_handler (gdbarch); | |
5300 | ||
5301 | target_terminal_inferior (); | |
5302 | } | |
5303 | ||
edcc5120 TT |
5304 | /* Handle an solib event by calling solib_add. */ |
5305 | ||
5306 | void | |
5307 | handle_solib_event (void) | |
5308 | { | |
5309 | clear_program_space_solib_cache (current_inferior ()->pspace); | |
5310 | ||
5311 | /* Check for any newly added shared libraries if we're supposed to | |
5312 | be adding them automatically. Switch terminal for any messages | |
5313 | produced by breakpoint_re_set. */ | |
5314 | target_terminal_ours_for_output (); | |
5315 | #ifdef SOLIB_ADD | |
5316 | SOLIB_ADD (NULL, 0, ¤t_target, auto_solib_add); | |
5317 | #else | |
5318 | solib_add (NULL, 0, ¤t_target, auto_solib_add); | |
5319 | #endif | |
5320 | target_terminal_inferior (); | |
5321 | } | |
5322 | ||
628fe4e4 JK |
5323 | /* Prepare WHAT final decision for infrun. */ |
5324 | ||
5325 | /* Decide what infrun needs to do with this bpstat. */ | |
5326 | ||
c906108c | 5327 | struct bpstat_what |
0e30163f | 5328 | bpstat_what (bpstat bs_head) |
c906108c | 5329 | { |
c906108c | 5330 | struct bpstat_what retval; |
628fe4e4 | 5331 | int jit_event = 0; |
0e30163f | 5332 | bpstat bs; |
c906108c | 5333 | |
628fe4e4 | 5334 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5335 | retval.call_dummy = STOP_NONE; |
186c406b | 5336 | retval.is_longjmp = 0; |
628fe4e4 | 5337 | |
0e30163f | 5338 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5339 | { |
628fe4e4 JK |
5340 | /* Extract this BS's action. After processing each BS, we check |
5341 | if its action overrides all we've seem so far. */ | |
5342 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5343 | enum bptype bptype; | |
5344 | ||
c906108c | 5345 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5346 | { |
5347 | /* I suspect this can happen if it was a momentary | |
5348 | breakpoint which has since been deleted. */ | |
5349 | bptype = bp_none; | |
5350 | } | |
20874c92 | 5351 | else |
f431efe5 | 5352 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5353 | |
5354 | switch (bptype) | |
c906108c SS |
5355 | { |
5356 | case bp_none: | |
628fe4e4 | 5357 | break; |
c906108c SS |
5358 | case bp_breakpoint: |
5359 | case bp_hardware_breakpoint: | |
5360 | case bp_until: | |
5361 | case bp_finish: | |
a9b3a50f | 5362 | case bp_shlib_event: |
c906108c SS |
5363 | if (bs->stop) |
5364 | { | |
5365 | if (bs->print) | |
628fe4e4 | 5366 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5367 | else |
628fe4e4 | 5368 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5369 | } |
5370 | else | |
628fe4e4 | 5371 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5372 | break; |
5373 | case bp_watchpoint: | |
5374 | case bp_hardware_watchpoint: | |
5375 | case bp_read_watchpoint: | |
5376 | case bp_access_watchpoint: | |
5377 | if (bs->stop) | |
5378 | { | |
5379 | if (bs->print) | |
628fe4e4 | 5380 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5381 | else |
628fe4e4 | 5382 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5383 | } |
5384 | else | |
628fe4e4 JK |
5385 | { |
5386 | /* There was a watchpoint, but we're not stopping. | |
5387 | This requires no further action. */ | |
5388 | } | |
c906108c SS |
5389 | break; |
5390 | case bp_longjmp: | |
e2e4d78b | 5391 | case bp_longjmp_call_dummy: |
186c406b | 5392 | case bp_exception: |
628fe4e4 | 5393 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5394 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5395 | break; |
5396 | case bp_longjmp_resume: | |
186c406b | 5397 | case bp_exception_resume: |
628fe4e4 | 5398 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5399 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5400 | break; |
5401 | case bp_step_resume: | |
5402 | if (bs->stop) | |
628fe4e4 JK |
5403 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5404 | else | |
c906108c | 5405 | { |
628fe4e4 JK |
5406 | /* It is for the wrong frame. */ |
5407 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5408 | } |
c906108c | 5409 | break; |
2c03e5be PA |
5410 | case bp_hp_step_resume: |
5411 | if (bs->stop) | |
5412 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5413 | else | |
5414 | { | |
5415 | /* It is for the wrong frame. */ | |
5416 | this_action = BPSTAT_WHAT_SINGLE; | |
5417 | } | |
5418 | break; | |
c906108c | 5419 | case bp_watchpoint_scope: |
c4093a6a | 5420 | case bp_thread_event: |
1900040c | 5421 | case bp_overlay_event: |
0fd8e87f | 5422 | case bp_longjmp_master: |
aa7d318d | 5423 | case bp_std_terminate_master: |
186c406b | 5424 | case bp_exception_master: |
628fe4e4 | 5425 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5426 | break; |
ce78b96d | 5427 | case bp_catchpoint: |
c5aa993b JM |
5428 | if (bs->stop) |
5429 | { | |
5430 | if (bs->print) | |
628fe4e4 | 5431 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5432 | else |
628fe4e4 | 5433 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5434 | } |
5435 | else | |
628fe4e4 JK |
5436 | { |
5437 | /* There was a catchpoint, but we're not stopping. | |
5438 | This requires no further action. */ | |
5439 | } | |
5440 | break; | |
628fe4e4 JK |
5441 | case bp_jit_event: |
5442 | jit_event = 1; | |
5443 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5444 | break; |
c906108c | 5445 | case bp_call_dummy: |
53a5351d JM |
5446 | /* Make sure the action is stop (silent or noisy), |
5447 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5448 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5449 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5450 | break; |
5451 | case bp_std_terminate: | |
5452 | /* Make sure the action is stop (silent or noisy), | |
5453 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5454 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5455 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5456 | break; |
1042e4c0 | 5457 | case bp_tracepoint: |
7a697b8d | 5458 | case bp_fast_tracepoint: |
0fb4aa4b | 5459 | case bp_static_tracepoint: |
1042e4c0 SS |
5460 | /* Tracepoint hits should not be reported back to GDB, and |
5461 | if one got through somehow, it should have been filtered | |
5462 | out already. */ | |
5463 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5464 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5465 | break; |
5466 | case bp_gnu_ifunc_resolver: | |
5467 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5468 | this_action = BPSTAT_WHAT_SINGLE; | |
5469 | break; | |
5470 | case bp_gnu_ifunc_resolver_return: | |
5471 | /* The breakpoint will be removed, execution will restart from the | |
5472 | PC of the former breakpoint. */ | |
5473 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5474 | break; | |
e7e0cddf SS |
5475 | |
5476 | case bp_dprintf: | |
5477 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5478 | break; | |
5479 | ||
628fe4e4 JK |
5480 | default: |
5481 | internal_error (__FILE__, __LINE__, | |
5482 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5483 | } |
628fe4e4 JK |
5484 | |
5485 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5486 | } |
628fe4e4 | 5487 | |
0e30163f JK |
5488 | /* These operations may affect the bs->breakpoint_at state so they are |
5489 | delayed after MAIN_ACTION is decided above. */ | |
5490 | ||
628fe4e4 JK |
5491 | if (jit_event) |
5492 | { | |
5493 | if (debug_infrun) | |
5494 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5495 | ||
5496 | handle_jit_event (); | |
5497 | } | |
5498 | ||
0e30163f JK |
5499 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5500 | { | |
5501 | struct breakpoint *b = bs->breakpoint_at; | |
5502 | ||
5503 | if (b == NULL) | |
5504 | continue; | |
5505 | switch (b->type) | |
5506 | { | |
5507 | case bp_gnu_ifunc_resolver: | |
5508 | gnu_ifunc_resolver_stop (b); | |
5509 | break; | |
5510 | case bp_gnu_ifunc_resolver_return: | |
5511 | gnu_ifunc_resolver_return_stop (b); | |
5512 | break; | |
5513 | } | |
5514 | } | |
5515 | ||
c906108c SS |
5516 | return retval; |
5517 | } | |
5518 | ||
5519 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5520 | without hardware support). This isn't related to a specific bpstat, | |
5521 | just to things like whether watchpoints are set. */ | |
5522 | ||
c5aa993b | 5523 | int |
fba45db2 | 5524 | bpstat_should_step (void) |
c906108c SS |
5525 | { |
5526 | struct breakpoint *b; | |
cc59ec59 | 5527 | |
c906108c | 5528 | ALL_BREAKPOINTS (b) |
717a8278 | 5529 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5530 | return 1; |
c906108c SS |
5531 | return 0; |
5532 | } | |
5533 | ||
67822962 PA |
5534 | int |
5535 | bpstat_causes_stop (bpstat bs) | |
5536 | { | |
5537 | for (; bs != NULL; bs = bs->next) | |
5538 | if (bs->stop) | |
5539 | return 1; | |
5540 | ||
5541 | return 0; | |
5542 | } | |
5543 | ||
c906108c | 5544 | \f |
c5aa993b | 5545 | |
170b53b2 UW |
5546 | /* Compute a string of spaces suitable to indent the next line |
5547 | so it starts at the position corresponding to the table column | |
5548 | named COL_NAME in the currently active table of UIOUT. */ | |
5549 | ||
5550 | static char * | |
5551 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5552 | { | |
5553 | static char wrap_indent[80]; | |
5554 | int i, total_width, width, align; | |
5555 | char *text; | |
5556 | ||
5557 | total_width = 0; | |
5558 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5559 | { | |
5560 | if (strcmp (text, col_name) == 0) | |
5561 | { | |
5562 | gdb_assert (total_width < sizeof wrap_indent); | |
5563 | memset (wrap_indent, ' ', total_width); | |
5564 | wrap_indent[total_width] = 0; | |
5565 | ||
5566 | return wrap_indent; | |
5567 | } | |
5568 | ||
5569 | total_width += width + 1; | |
5570 | } | |
5571 | ||
5572 | return NULL; | |
5573 | } | |
5574 | ||
b775012e LM |
5575 | /* Determine if the locations of this breakpoint will have their conditions |
5576 | evaluated by the target, host or a mix of both. Returns the following: | |
5577 | ||
5578 | "host": Host evals condition. | |
5579 | "host or target": Host or Target evals condition. | |
5580 | "target": Target evals condition. | |
5581 | */ | |
5582 | ||
5583 | static const char * | |
5584 | bp_condition_evaluator (struct breakpoint *b) | |
5585 | { | |
5586 | struct bp_location *bl; | |
5587 | char host_evals = 0; | |
5588 | char target_evals = 0; | |
5589 | ||
5590 | if (!b) | |
5591 | return NULL; | |
5592 | ||
5593 | if (!is_breakpoint (b)) | |
5594 | return NULL; | |
5595 | ||
5596 | if (gdb_evaluates_breakpoint_condition_p () | |
5597 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5598 | return condition_evaluation_host; | |
5599 | ||
5600 | for (bl = b->loc; bl; bl = bl->next) | |
5601 | { | |
5602 | if (bl->cond_bytecode) | |
5603 | target_evals++; | |
5604 | else | |
5605 | host_evals++; | |
5606 | } | |
5607 | ||
5608 | if (host_evals && target_evals) | |
5609 | return condition_evaluation_both; | |
5610 | else if (target_evals) | |
5611 | return condition_evaluation_target; | |
5612 | else | |
5613 | return condition_evaluation_host; | |
5614 | } | |
5615 | ||
5616 | /* Determine the breakpoint location's condition evaluator. This is | |
5617 | similar to bp_condition_evaluator, but for locations. */ | |
5618 | ||
5619 | static const char * | |
5620 | bp_location_condition_evaluator (struct bp_location *bl) | |
5621 | { | |
5622 | if (bl && !is_breakpoint (bl->owner)) | |
5623 | return NULL; | |
5624 | ||
5625 | if (gdb_evaluates_breakpoint_condition_p () | |
5626 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5627 | return condition_evaluation_host; | |
5628 | ||
5629 | if (bl && bl->cond_bytecode) | |
5630 | return condition_evaluation_target; | |
5631 | else | |
5632 | return condition_evaluation_host; | |
5633 | } | |
5634 | ||
859825b8 JK |
5635 | /* Print the LOC location out of the list of B->LOC locations. */ |
5636 | ||
170b53b2 UW |
5637 | static void |
5638 | print_breakpoint_location (struct breakpoint *b, | |
5639 | struct bp_location *loc) | |
0d381245 | 5640 | { |
79a45e25 | 5641 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
5642 | struct cleanup *old_chain = save_current_program_space (); |
5643 | ||
859825b8 JK |
5644 | if (loc != NULL && loc->shlib_disabled) |
5645 | loc = NULL; | |
5646 | ||
6c95b8df PA |
5647 | if (loc != NULL) |
5648 | set_current_program_space (loc->pspace); | |
5649 | ||
56435ebe TT |
5650 | if (b->display_canonical) |
5651 | ui_out_field_string (uiout, "what", b->addr_string); | |
f8eba3c6 | 5652 | else if (loc && loc->source_file) |
0d381245 VP |
5653 | { |
5654 | struct symbol *sym | |
5655 | = find_pc_sect_function (loc->address, loc->section); | |
5656 | if (sym) | |
5657 | { | |
5658 | ui_out_text (uiout, "in "); | |
5659 | ui_out_field_string (uiout, "func", | |
5660 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
5661 | ui_out_text (uiout, " "); |
5662 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
5663 | ui_out_text (uiout, "at "); | |
0d381245 | 5664 | } |
f8eba3c6 | 5665 | ui_out_field_string (uiout, "file", loc->source_file); |
0d381245 VP |
5666 | ui_out_text (uiout, ":"); |
5667 | ||
5668 | if (ui_out_is_mi_like_p (uiout)) | |
5669 | { | |
5670 | struct symtab_and_line sal = find_pc_line (loc->address, 0); | |
5671 | char *fullname = symtab_to_fullname (sal.symtab); | |
5672 | ||
5673 | if (fullname) | |
5674 | ui_out_field_string (uiout, "fullname", fullname); | |
5675 | } | |
5676 | ||
f8eba3c6 | 5677 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 5678 | } |
859825b8 | 5679 | else if (loc) |
0d381245 | 5680 | { |
f99d8bf4 PA |
5681 | struct ui_file *stb = mem_fileopen (); |
5682 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 5683 | |
f99d8bf4 | 5684 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 5685 | demangle, ""); |
0d381245 | 5686 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
5687 | |
5688 | do_cleanups (stb_chain); | |
0d381245 | 5689 | } |
859825b8 JK |
5690 | else |
5691 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 5692 | |
b775012e LM |
5693 | if (loc && is_breakpoint (b) |
5694 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5695 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5696 | { | |
5697 | ui_out_text (uiout, " ("); | |
5698 | ui_out_field_string (uiout, "evaluated-by", | |
5699 | bp_location_condition_evaluator (loc)); | |
5700 | ui_out_text (uiout, ")"); | |
5701 | } | |
5702 | ||
6c95b8df | 5703 | do_cleanups (old_chain); |
0d381245 VP |
5704 | } |
5705 | ||
269b11a2 PA |
5706 | static const char * |
5707 | bptype_string (enum bptype type) | |
c906108c | 5708 | { |
c4093a6a JM |
5709 | struct ep_type_description |
5710 | { | |
5711 | enum bptype type; | |
5712 | char *description; | |
5713 | }; | |
5714 | static struct ep_type_description bptypes[] = | |
c906108c | 5715 | { |
c5aa993b JM |
5716 | {bp_none, "?deleted?"}, |
5717 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5718 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
5719 | {bp_until, "until"}, |
5720 | {bp_finish, "finish"}, | |
5721 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5722 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5723 | {bp_read_watchpoint, "read watchpoint"}, |
5724 | {bp_access_watchpoint, "acc watchpoint"}, | |
5725 | {bp_longjmp, "longjmp"}, | |
5726 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5727 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5728 | {bp_exception, "exception"}, |
5729 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5730 | {bp_step_resume, "step resume"}, |
2c03e5be | 5731 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5732 | {bp_watchpoint_scope, "watchpoint scope"}, |
5733 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5734 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5735 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5736 | {bp_thread_event, "thread events"}, |
1900040c | 5737 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5738 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5739 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5740 | {bp_exception_master, "exception master"}, |
ce78b96d | 5741 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5742 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5743 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5744 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5745 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5746 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5747 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5748 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5749 | }; |
269b11a2 PA |
5750 | |
5751 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5752 | || ((int) type != bptypes[(int) type].type)) | |
5753 | internal_error (__FILE__, __LINE__, | |
5754 | _("bptypes table does not describe type #%d."), | |
5755 | (int) type); | |
5756 | ||
5757 | return bptypes[(int) type].description; | |
5758 | } | |
5759 | ||
5760 | /* Print B to gdb_stdout. */ | |
5761 | ||
5762 | static void | |
5763 | print_one_breakpoint_location (struct breakpoint *b, | |
5764 | struct bp_location *loc, | |
5765 | int loc_number, | |
5766 | struct bp_location **last_loc, | |
269b11a2 PA |
5767 | int allflag) |
5768 | { | |
5769 | struct command_line *l; | |
c2c6d25f | 5770 | static char bpenables[] = "nynny"; |
c906108c | 5771 | |
79a45e25 | 5772 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5773 | int header_of_multiple = 0; |
5774 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5775 | struct value_print_options opts; |
5776 | ||
5777 | get_user_print_options (&opts); | |
0d381245 VP |
5778 | |
5779 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5780 | /* See comment in print_one_breakpoint concerning treatment of |
5781 | breakpoints with single disabled location. */ | |
0d381245 VP |
5782 | if (loc == NULL |
5783 | && (b->loc != NULL | |
5784 | && (b->loc->next != NULL || !b->loc->enabled))) | |
5785 | header_of_multiple = 1; | |
5786 | if (loc == NULL) | |
5787 | loc = b->loc; | |
5788 | ||
c4093a6a JM |
5789 | annotate_record (); |
5790 | ||
5791 | /* 1 */ | |
5792 | annotate_field (0); | |
0d381245 VP |
5793 | if (part_of_multiple) |
5794 | { | |
5795 | char *formatted; | |
0c6773c1 | 5796 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
5797 | ui_out_field_string (uiout, "number", formatted); |
5798 | xfree (formatted); | |
5799 | } | |
5800 | else | |
5801 | { | |
5802 | ui_out_field_int (uiout, "number", b->number); | |
5803 | } | |
c4093a6a JM |
5804 | |
5805 | /* 2 */ | |
5806 | annotate_field (1); | |
0d381245 VP |
5807 | if (part_of_multiple) |
5808 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
5809 | else |
5810 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
5811 | |
5812 | /* 3 */ | |
5813 | annotate_field (2); | |
0d381245 VP |
5814 | if (part_of_multiple) |
5815 | ui_out_field_skip (uiout, "disp"); | |
5816 | else | |
2cec12e5 | 5817 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 5818 | |
c4093a6a JM |
5819 | |
5820 | /* 4 */ | |
5821 | annotate_field (3); | |
0d381245 | 5822 | if (part_of_multiple) |
54e52265 | 5823 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 5824 | else |
4a64f543 MS |
5825 | ui_out_field_fmt (uiout, "enabled", "%c", |
5826 | bpenables[(int) b->enable_state]); | |
54e52265 | 5827 | ui_out_spaces (uiout, 2); |
0d381245 | 5828 | |
c4093a6a JM |
5829 | |
5830 | /* 5 and 6 */ | |
3086aeae | 5831 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 5832 | { |
4a64f543 MS |
5833 | /* Although the print_one can possibly print all locations, |
5834 | calling it here is not likely to get any nice result. So, | |
5835 | make sure there's just one location. */ | |
0d381245 | 5836 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 5837 | b->ops->print_one (b, last_loc); |
0d381245 | 5838 | } |
3086aeae DJ |
5839 | else |
5840 | switch (b->type) | |
5841 | { | |
5842 | case bp_none: | |
5843 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 5844 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 5845 | break; |
c906108c | 5846 | |
3086aeae DJ |
5847 | case bp_watchpoint: |
5848 | case bp_hardware_watchpoint: | |
5849 | case bp_read_watchpoint: | |
5850 | case bp_access_watchpoint: | |
3a5c3e22 PA |
5851 | { |
5852 | struct watchpoint *w = (struct watchpoint *) b; | |
5853 | ||
5854 | /* Field 4, the address, is omitted (which makes the columns | |
5855 | not line up too nicely with the headers, but the effect | |
5856 | is relatively readable). */ | |
5857 | if (opts.addressprint) | |
5858 | ui_out_field_skip (uiout, "addr"); | |
5859 | annotate_field (5); | |
5860 | ui_out_field_string (uiout, "what", w->exp_string); | |
5861 | } | |
3086aeae DJ |
5862 | break; |
5863 | ||
3086aeae DJ |
5864 | case bp_breakpoint: |
5865 | case bp_hardware_breakpoint: | |
5866 | case bp_until: | |
5867 | case bp_finish: | |
5868 | case bp_longjmp: | |
5869 | case bp_longjmp_resume: | |
e2e4d78b | 5870 | case bp_longjmp_call_dummy: |
186c406b TT |
5871 | case bp_exception: |
5872 | case bp_exception_resume: | |
3086aeae | 5873 | case bp_step_resume: |
2c03e5be | 5874 | case bp_hp_step_resume: |
3086aeae DJ |
5875 | case bp_watchpoint_scope: |
5876 | case bp_call_dummy: | |
aa7d318d | 5877 | case bp_std_terminate: |
3086aeae DJ |
5878 | case bp_shlib_event: |
5879 | case bp_thread_event: | |
5880 | case bp_overlay_event: | |
0fd8e87f | 5881 | case bp_longjmp_master: |
aa7d318d | 5882 | case bp_std_terminate_master: |
186c406b | 5883 | case bp_exception_master: |
1042e4c0 | 5884 | case bp_tracepoint: |
7a697b8d | 5885 | case bp_fast_tracepoint: |
0fb4aa4b | 5886 | case bp_static_tracepoint: |
e7e0cddf | 5887 | case bp_dprintf: |
4efc6507 | 5888 | case bp_jit_event: |
0e30163f JK |
5889 | case bp_gnu_ifunc_resolver: |
5890 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 5891 | if (opts.addressprint) |
3086aeae DJ |
5892 | { |
5893 | annotate_field (4); | |
54e52265 | 5894 | if (header_of_multiple) |
0d381245 | 5895 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 5896 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 5897 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 5898 | else |
5af949e3 UW |
5899 | ui_out_field_core_addr (uiout, "addr", |
5900 | loc->gdbarch, loc->address); | |
3086aeae DJ |
5901 | } |
5902 | annotate_field (5); | |
0d381245 | 5903 | if (!header_of_multiple) |
170b53b2 | 5904 | print_breakpoint_location (b, loc); |
0d381245 | 5905 | if (b->loc) |
a6d9a66e | 5906 | *last_loc = b->loc; |
3086aeae DJ |
5907 | break; |
5908 | } | |
c906108c | 5909 | |
6c95b8df PA |
5910 | |
5911 | /* For backward compatibility, don't display inferiors unless there | |
5912 | are several. */ | |
5913 | if (loc != NULL | |
5914 | && !header_of_multiple | |
5915 | && (allflag | |
5916 | || (!gdbarch_has_global_breakpoints (target_gdbarch) | |
5917 | && (number_of_program_spaces () > 1 | |
5918 | || number_of_inferiors () > 1) | |
4a64f543 MS |
5919 | /* LOC is for existing B, it cannot be in |
5920 | moribund_locations and thus having NULL OWNER. */ | |
6c95b8df PA |
5921 | && loc->owner->type != bp_catchpoint))) |
5922 | { | |
5923 | struct inferior *inf; | |
5924 | int first = 1; | |
5925 | ||
5926 | for (inf = inferior_list; inf != NULL; inf = inf->next) | |
5927 | { | |
5928 | if (inf->pspace == loc->pspace) | |
5929 | { | |
5930 | if (first) | |
5931 | { | |
5932 | first = 0; | |
5933 | ui_out_text (uiout, " inf "); | |
5934 | } | |
5935 | else | |
5936 | ui_out_text (uiout, ", "); | |
5937 | ui_out_text (uiout, plongest (inf->num)); | |
5938 | } | |
5939 | } | |
5940 | } | |
5941 | ||
4a306c9a | 5942 | if (!part_of_multiple) |
c4093a6a | 5943 | { |
4a306c9a JB |
5944 | if (b->thread != -1) |
5945 | { | |
5946 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 5947 | "stop only in" line a little further down. */ |
4a306c9a JB |
5948 | ui_out_text (uiout, " thread "); |
5949 | ui_out_field_int (uiout, "thread", b->thread); | |
5950 | } | |
5951 | else if (b->task != 0) | |
5952 | { | |
5953 | ui_out_text (uiout, " task "); | |
5954 | ui_out_field_int (uiout, "task", b->task); | |
5955 | } | |
c4093a6a | 5956 | } |
f1310107 | 5957 | |
8b93c638 | 5958 | ui_out_text (uiout, "\n"); |
f1310107 | 5959 | |
348d480f | 5960 | if (!part_of_multiple) |
f1310107 TJB |
5961 | b->ops->print_one_detail (b, uiout); |
5962 | ||
0d381245 | 5963 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
5964 | { |
5965 | annotate_field (6); | |
8b93c638 | 5966 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 5967 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 5968 | the frame ID. */ |
5af949e3 UW |
5969 | ui_out_field_core_addr (uiout, "frame", |
5970 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 5971 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
5972 | } |
5973 | ||
28010a5d | 5974 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
5975 | { |
5976 | annotate_field (7); | |
d77f58be | 5977 | if (is_tracepoint (b)) |
1042e4c0 SS |
5978 | ui_out_text (uiout, "\ttrace only if "); |
5979 | else | |
5980 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 5981 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
5982 | |
5983 | /* Print whether the target is doing the breakpoint's condition | |
5984 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
5985 | if (is_breakpoint (b) | |
5986 | && breakpoint_condition_evaluation_mode () | |
5987 | == condition_evaluation_target) | |
5988 | { | |
5989 | ui_out_text (uiout, " ("); | |
5990 | ui_out_field_string (uiout, "evaluated-by", | |
5991 | bp_condition_evaluator (b)); | |
5992 | ui_out_text (uiout, " evals)"); | |
5993 | } | |
0101ce28 JJ |
5994 | ui_out_text (uiout, "\n"); |
5995 | } | |
5996 | ||
0d381245 | 5997 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 5998 | { |
4a64f543 | 5999 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6000 | ui_out_text (uiout, "\tstop only in thread "); |
6001 | ui_out_field_int (uiout, "thread", b->thread); | |
6002 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6003 | } |
6004 | ||
63c715c6 | 6005 | if (!part_of_multiple && b->hit_count) |
c4093a6a | 6006 | { |
4a64f543 | 6007 | /* FIXME should make an annotation for this. */ |
c326b90e | 6008 | if (is_catchpoint (b)) |
8b93c638 | 6009 | ui_out_text (uiout, "\tcatchpoint"); |
f196051f SS |
6010 | else if (is_tracepoint (b)) |
6011 | ui_out_text (uiout, "\ttracepoint"); | |
8b93c638 JM |
6012 | else |
6013 | ui_out_text (uiout, "\tbreakpoint"); | |
6014 | ui_out_text (uiout, " already hit "); | |
6015 | ui_out_field_int (uiout, "times", b->hit_count); | |
6016 | if (b->hit_count == 1) | |
6017 | ui_out_text (uiout, " time\n"); | |
6018 | else | |
6019 | ui_out_text (uiout, " times\n"); | |
c4093a6a JM |
6020 | } |
6021 | ||
4a64f543 MS |
6022 | /* Output the count also if it is zero, but only if this is mi. |
6023 | FIXME: Should have a better test for this. */ | |
9dc5e2a9 | 6024 | if (ui_out_is_mi_like_p (uiout)) |
63c715c6 | 6025 | if (!part_of_multiple && b->hit_count == 0) |
fb40c209 | 6026 | ui_out_field_int (uiout, "times", b->hit_count); |
8b93c638 | 6027 | |
0d381245 | 6028 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6029 | { |
6030 | annotate_field (8); | |
8b93c638 JM |
6031 | ui_out_text (uiout, "\tignore next "); |
6032 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6033 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6034 | } |
059fb39f | 6035 | |
816338b5 SS |
6036 | /* Note that an enable count of 1 corresponds to "enable once" |
6037 | behavior, which is reported by the combination of enablement and | |
6038 | disposition, so we don't need to mention it here. */ | |
6039 | if (!part_of_multiple && b->enable_count > 1) | |
6040 | { | |
6041 | annotate_field (8); | |
6042 | ui_out_text (uiout, "\tdisable after "); | |
6043 | /* Tweak the wording to clarify that ignore and enable counts | |
6044 | are distinct, and have additive effect. */ | |
6045 | if (b->ignore_count) | |
6046 | ui_out_text (uiout, "additional "); | |
6047 | else | |
6048 | ui_out_text (uiout, "next "); | |
6049 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6050 | ui_out_text (uiout, " hits\n"); | |
6051 | } | |
6052 | ||
f196051f SS |
6053 | if (!part_of_multiple && is_tracepoint (b)) |
6054 | { | |
6055 | struct tracepoint *tp = (struct tracepoint *) b; | |
6056 | ||
6057 | if (tp->traceframe_usage) | |
6058 | { | |
6059 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6060 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6061 | ui_out_text (uiout, " bytes\n"); | |
6062 | } | |
6063 | } | |
6064 | ||
d3ce09f5 SS |
6065 | if (!part_of_multiple && b->extra_string |
6066 | && b->type == bp_dprintf && !b->commands) | |
6067 | { | |
6068 | annotate_field (7); | |
6069 | ui_out_text (uiout, "\t(agent printf) "); | |
6070 | ui_out_field_string (uiout, "printf", b->extra_string); | |
6071 | ui_out_text (uiout, "\n"); | |
6072 | } | |
6073 | ||
9add0f1b | 6074 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6075 | if (!part_of_multiple && l) |
c4093a6a | 6076 | { |
3b31d625 EZ |
6077 | struct cleanup *script_chain; |
6078 | ||
c4093a6a | 6079 | annotate_field (9); |
3b31d625 | 6080 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6081 | print_command_lines (uiout, l, 4); |
3b31d625 | 6082 | do_cleanups (script_chain); |
c4093a6a | 6083 | } |
d24317b4 | 6084 | |
d9b3f62e | 6085 | if (is_tracepoint (b)) |
1042e4c0 | 6086 | { |
d9b3f62e PA |
6087 | struct tracepoint *t = (struct tracepoint *) b; |
6088 | ||
6089 | if (!part_of_multiple && t->pass_count) | |
6090 | { | |
6091 | annotate_field (10); | |
6092 | ui_out_text (uiout, "\tpass count "); | |
6093 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6094 | ui_out_text (uiout, " \n"); | |
6095 | } | |
1042e4c0 SS |
6096 | } |
6097 | ||
d24317b4 VP |
6098 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6099 | { | |
3a5c3e22 PA |
6100 | if (is_watchpoint (b)) |
6101 | { | |
6102 | struct watchpoint *w = (struct watchpoint *) b; | |
6103 | ||
6104 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6105 | } | |
6106 | else if (b->addr_string) | |
d24317b4 | 6107 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 6108 | } |
c4093a6a | 6109 | } |
c5aa993b | 6110 | |
0d381245 VP |
6111 | static void |
6112 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6113 | struct bp_location **last_loc, |
6c95b8df | 6114 | int allflag) |
0d381245 | 6115 | { |
8d3788bd | 6116 | struct cleanup *bkpt_chain; |
79a45e25 | 6117 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6118 | |
6119 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6120 | ||
12c5a436 | 6121 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6122 | do_cleanups (bkpt_chain); |
0d381245 VP |
6123 | |
6124 | /* If this breakpoint has custom print function, | |
6125 | it's already printed. Otherwise, print individual | |
6126 | locations, if any. */ | |
6127 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6128 | { | |
4a64f543 MS |
6129 | /* If breakpoint has a single location that is disabled, we |
6130 | print it as if it had several locations, since otherwise it's | |
6131 | hard to represent "breakpoint enabled, location disabled" | |
6132 | situation. | |
6133 | ||
6134 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6135 | internally, that's not a property exposed to user. */ |
0d381245 | 6136 | if (b->loc |
a5606eee | 6137 | && !is_hardware_watchpoint (b) |
8d3788bd | 6138 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6139 | { |
6140 | struct bp_location *loc; | |
6141 | int n = 1; | |
8d3788bd | 6142 | |
0d381245 | 6143 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6144 | { |
6145 | struct cleanup *inner2 = | |
6146 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6147 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6148 | do_cleanups (inner2); | |
6149 | } | |
0d381245 VP |
6150 | } |
6151 | } | |
6152 | } | |
6153 | ||
a6d9a66e UW |
6154 | static int |
6155 | breakpoint_address_bits (struct breakpoint *b) | |
6156 | { | |
6157 | int print_address_bits = 0; | |
6158 | struct bp_location *loc; | |
6159 | ||
6160 | for (loc = b->loc; loc; loc = loc->next) | |
6161 | { | |
c7437ca6 PA |
6162 | int addr_bit; |
6163 | ||
6164 | /* Software watchpoints that aren't watching memory don't have | |
6165 | an address to print. */ | |
6166 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6167 | continue; | |
6168 | ||
6169 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6170 | if (addr_bit > print_address_bits) |
6171 | print_address_bits = addr_bit; | |
6172 | } | |
6173 | ||
6174 | return print_address_bits; | |
6175 | } | |
0d381245 | 6176 | |
c4093a6a JM |
6177 | struct captured_breakpoint_query_args |
6178 | { | |
6179 | int bnum; | |
6180 | }; | |
c5aa993b | 6181 | |
c4093a6a | 6182 | static int |
2b65245e | 6183 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6184 | { |
6185 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6186 | struct breakpoint *b; |
a6d9a66e | 6187 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6188 | |
c4093a6a JM |
6189 | ALL_BREAKPOINTS (b) |
6190 | { | |
6191 | if (args->bnum == b->number) | |
c5aa993b | 6192 | { |
12c5a436 | 6193 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6194 | return GDB_RC_OK; |
c5aa993b | 6195 | } |
c4093a6a JM |
6196 | } |
6197 | return GDB_RC_NONE; | |
6198 | } | |
c5aa993b | 6199 | |
c4093a6a | 6200 | enum gdb_rc |
4a64f543 MS |
6201 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6202 | char **error_message) | |
c4093a6a JM |
6203 | { |
6204 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6205 | |
c4093a6a JM |
6206 | args.bnum = bnum; |
6207 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6208 | an error. */ |
b0b13bb4 DJ |
6209 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6210 | error_message, RETURN_MASK_ALL) < 0) | |
6211 | return GDB_RC_FAIL; | |
6212 | else | |
6213 | return GDB_RC_OK; | |
c4093a6a | 6214 | } |
c5aa993b | 6215 | |
09d682a4 TT |
6216 | /* Return true if this breakpoint was set by the user, false if it is |
6217 | internal or momentary. */ | |
6218 | ||
6219 | int | |
6220 | user_breakpoint_p (struct breakpoint *b) | |
6221 | { | |
46c6471b | 6222 | return b->number > 0; |
09d682a4 TT |
6223 | } |
6224 | ||
7f3b0473 | 6225 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6226 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6227 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6228 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6229 | ones for which it returns non-zero. Return the total number of | |
6230 | breakpoints listed. */ | |
c906108c | 6231 | |
d77f58be | 6232 | static int |
e5a67952 | 6233 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6234 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6235 | { |
52f0bd74 | 6236 | struct breakpoint *b; |
a6d9a66e | 6237 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6238 | int nr_printable_breakpoints; |
3b31d625 | 6239 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6240 | struct value_print_options opts; |
a6d9a66e | 6241 | int print_address_bits = 0; |
269b11a2 | 6242 | int print_type_col_width = 14; |
79a45e25 | 6243 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6244 | |
79a45b7d TT |
6245 | get_user_print_options (&opts); |
6246 | ||
4a64f543 MS |
6247 | /* Compute the number of rows in the table, as well as the size |
6248 | required for address fields. */ | |
7f3b0473 AC |
6249 | nr_printable_breakpoints = 0; |
6250 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6251 | { |
6252 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6253 | if (filter && !filter (b)) | |
6254 | continue; | |
6255 | ||
6256 | /* If we have an "args" string, it is a list of breakpoints to | |
6257 | accept. Skip the others. */ | |
6258 | if (args != NULL && *args != '\0') | |
6259 | { | |
6260 | if (allflag && parse_and_eval_long (args) != b->number) | |
6261 | continue; | |
6262 | if (!allflag && !number_is_in_list (args, b->number)) | |
6263 | continue; | |
6264 | } | |
269b11a2 | 6265 | |
e5a67952 MS |
6266 | if (allflag || user_breakpoint_p (b)) |
6267 | { | |
6268 | int addr_bit, type_len; | |
a6d9a66e | 6269 | |
e5a67952 MS |
6270 | addr_bit = breakpoint_address_bits (b); |
6271 | if (addr_bit > print_address_bits) | |
6272 | print_address_bits = addr_bit; | |
269b11a2 | 6273 | |
e5a67952 MS |
6274 | type_len = strlen (bptype_string (b->type)); |
6275 | if (type_len > print_type_col_width) | |
6276 | print_type_col_width = type_len; | |
6277 | ||
6278 | nr_printable_breakpoints++; | |
6279 | } | |
6280 | } | |
7f3b0473 | 6281 | |
79a45b7d | 6282 | if (opts.addressprint) |
3b31d625 | 6283 | bkpttbl_chain |
3e43a32a MS |
6284 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6285 | nr_printable_breakpoints, | |
3b31d625 | 6286 | "BreakpointTable"); |
8b93c638 | 6287 | else |
3b31d625 | 6288 | bkpttbl_chain |
3e43a32a MS |
6289 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6290 | nr_printable_breakpoints, | |
3b31d625 | 6291 | "BreakpointTable"); |
8b93c638 | 6292 | |
7f3b0473 | 6293 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6294 | annotate_breakpoints_headers (); |
6295 | if (nr_printable_breakpoints > 0) | |
6296 | annotate_field (0); | |
4a64f543 | 6297 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6298 | if (nr_printable_breakpoints > 0) |
6299 | annotate_field (1); | |
269b11a2 | 6300 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6301 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6302 | if (nr_printable_breakpoints > 0) |
6303 | annotate_field (2); | |
4a64f543 | 6304 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6305 | if (nr_printable_breakpoints > 0) |
6306 | annotate_field (3); | |
54e52265 | 6307 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6308 | if (opts.addressprint) |
e5a67952 MS |
6309 | { |
6310 | if (nr_printable_breakpoints > 0) | |
6311 | annotate_field (4); | |
6312 | if (print_address_bits <= 32) | |
6313 | ui_out_table_header (uiout, 10, ui_left, | |
6314 | "addr", "Address"); /* 5 */ | |
6315 | else | |
6316 | ui_out_table_header (uiout, 18, ui_left, | |
6317 | "addr", "Address"); /* 5 */ | |
6318 | } | |
d7faa9e7 AC |
6319 | if (nr_printable_breakpoints > 0) |
6320 | annotate_field (5); | |
6321 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6322 | ui_out_table_body (uiout); | |
6323 | if (nr_printable_breakpoints > 0) | |
6324 | annotate_breakpoints_table (); | |
7f3b0473 | 6325 | |
c4093a6a | 6326 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6327 | { |
6328 | QUIT; | |
6329 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6330 | if (filter && !filter (b)) | |
6331 | continue; | |
6332 | ||
6333 | /* If we have an "args" string, it is a list of breakpoints to | |
6334 | accept. Skip the others. */ | |
6335 | ||
6336 | if (args != NULL && *args != '\0') | |
6337 | { | |
6338 | if (allflag) /* maintenance info breakpoint */ | |
6339 | { | |
6340 | if (parse_and_eval_long (args) != b->number) | |
6341 | continue; | |
6342 | } | |
6343 | else /* all others */ | |
6344 | { | |
6345 | if (!number_is_in_list (args, b->number)) | |
6346 | continue; | |
6347 | } | |
6348 | } | |
6349 | /* We only print out user settable breakpoints unless the | |
6350 | allflag is set. */ | |
6351 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6352 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6353 | } |
6354 | ||
3b31d625 | 6355 | do_cleanups (bkpttbl_chain); |
698384cd | 6356 | |
7f3b0473 | 6357 | if (nr_printable_breakpoints == 0) |
c906108c | 6358 | { |
4a64f543 MS |
6359 | /* If there's a filter, let the caller decide how to report |
6360 | empty list. */ | |
d77f58be SS |
6361 | if (!filter) |
6362 | { | |
e5a67952 | 6363 | if (args == NULL || *args == '\0') |
d77f58be SS |
6364 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6365 | else | |
4a64f543 | 6366 | ui_out_message (uiout, 0, |
e5a67952 MS |
6367 | "No breakpoint or watchpoint matching '%s'.\n", |
6368 | args); | |
d77f58be | 6369 | } |
c906108c SS |
6370 | } |
6371 | else | |
c4093a6a | 6372 | { |
a6d9a66e UW |
6373 | if (last_loc && !server_command) |
6374 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6375 | } |
c906108c | 6376 | |
4a64f543 | 6377 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6378 | there have been breakpoints? */ |
c906108c | 6379 | annotate_breakpoints_table_end (); |
d77f58be SS |
6380 | |
6381 | return nr_printable_breakpoints; | |
c906108c SS |
6382 | } |
6383 | ||
ad443146 SS |
6384 | /* Display the value of default-collect in a way that is generally |
6385 | compatible with the breakpoint list. */ | |
6386 | ||
6387 | static void | |
6388 | default_collect_info (void) | |
6389 | { | |
79a45e25 PA |
6390 | struct ui_out *uiout = current_uiout; |
6391 | ||
ad443146 SS |
6392 | /* If it has no value (which is frequently the case), say nothing; a |
6393 | message like "No default-collect." gets in user's face when it's | |
6394 | not wanted. */ | |
6395 | if (!*default_collect) | |
6396 | return; | |
6397 | ||
6398 | /* The following phrase lines up nicely with per-tracepoint collect | |
6399 | actions. */ | |
6400 | ui_out_text (uiout, "default collect "); | |
6401 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6402 | ui_out_text (uiout, " \n"); | |
6403 | } | |
6404 | ||
c906108c | 6405 | static void |
e5a67952 | 6406 | breakpoints_info (char *args, int from_tty) |
c906108c | 6407 | { |
e5a67952 | 6408 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6409 | |
6410 | default_collect_info (); | |
d77f58be SS |
6411 | } |
6412 | ||
6413 | static void | |
e5a67952 | 6414 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6415 | { |
e5a67952 | 6416 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6417 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6418 | |
6419 | if (num_printed == 0) | |
6420 | { | |
e5a67952 | 6421 | if (args == NULL || *args == '\0') |
d77f58be SS |
6422 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6423 | else | |
e5a67952 | 6424 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6425 | } |
c906108c SS |
6426 | } |
6427 | ||
7a292a7a | 6428 | static void |
e5a67952 | 6429 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6430 | { |
e5a67952 | 6431 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6432 | |
6433 | default_collect_info (); | |
c906108c SS |
6434 | } |
6435 | ||
0d381245 | 6436 | static int |
714835d5 | 6437 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6438 | struct program_space *pspace, |
714835d5 | 6439 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6440 | { |
6441 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6442 | |
0d381245 VP |
6443 | for (; bl; bl = bl->next) |
6444 | { | |
6c95b8df PA |
6445 | if (bl->pspace == pspace |
6446 | && bl->address == pc | |
0d381245 VP |
6447 | && (!overlay_debugging || bl->section == section)) |
6448 | return 1; | |
6449 | } | |
6450 | return 0; | |
6451 | } | |
6452 | ||
672f9b60 | 6453 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6454 | concerns with logical breakpoints, so we match program spaces, not |
6455 | address spaces. */ | |
c906108c SS |
6456 | |
6457 | static void | |
6c95b8df PA |
6458 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6459 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6460 | struct obj_section *section, int thread) |
c906108c | 6461 | { |
52f0bd74 AC |
6462 | int others = 0; |
6463 | struct breakpoint *b; | |
c906108c SS |
6464 | |
6465 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6466 | others += (user_breakpoint_p (b) |
6467 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6468 | if (others > 0) |
6469 | { | |
a3f17187 AC |
6470 | if (others == 1) |
6471 | printf_filtered (_("Note: breakpoint ")); | |
6472 | else /* if (others == ???) */ | |
6473 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6474 | ALL_BREAKPOINTS (b) |
672f9b60 | 6475 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6476 | { |
6477 | others--; | |
6478 | printf_filtered ("%d", b->number); | |
6479 | if (b->thread == -1 && thread != -1) | |
6480 | printf_filtered (" (all threads)"); | |
6481 | else if (b->thread != -1) | |
6482 | printf_filtered (" (thread %d)", b->thread); | |
6483 | printf_filtered ("%s%s ", | |
059fb39f | 6484 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6485 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6486 | ? " (disabled)" |
6487 | : b->enable_state == bp_permanent | |
6488 | ? " (permanent)" | |
6489 | : ""), | |
6490 | (others > 1) ? "," | |
6491 | : ((others == 1) ? " and" : "")); | |
6492 | } | |
a3f17187 | 6493 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6494 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6495 | printf_filtered (".\n"); |
6496 | } | |
6497 | } | |
6498 | \f | |
c906108c | 6499 | |
e4f237da KB |
6500 | /* Return true iff it is meaningful to use the address member of |
6501 | BPT. For some breakpoint types, the address member is irrelevant | |
6502 | and it makes no sense to attempt to compare it to other addresses | |
6503 | (or use it for any other purpose either). | |
6504 | ||
4a64f543 MS |
6505 | More specifically, each of the following breakpoint types will |
6506 | always have a zero valued address and we don't want to mark | |
6507 | breakpoints of any of these types to be a duplicate of an actual | |
6508 | breakpoint at address zero: | |
e4f237da KB |
6509 | |
6510 | bp_watchpoint | |
2d134ed3 PA |
6511 | bp_catchpoint |
6512 | ||
6513 | */ | |
e4f237da KB |
6514 | |
6515 | static int | |
6516 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6517 | { | |
6518 | enum bptype type = bpt->type; | |
6519 | ||
2d134ed3 PA |
6520 | return (type != bp_watchpoint && type != bp_catchpoint); |
6521 | } | |
6522 | ||
6523 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6524 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6525 | ||
6526 | static int | |
4a64f543 MS |
6527 | watchpoint_locations_match (struct bp_location *loc1, |
6528 | struct bp_location *loc2) | |
2d134ed3 | 6529 | { |
3a5c3e22 PA |
6530 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6531 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6532 | ||
6533 | /* Both of them must exist. */ | |
6534 | gdb_assert (w1 != NULL); | |
6535 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6536 | |
4a64f543 MS |
6537 | /* If the target can evaluate the condition expression in hardware, |
6538 | then we we need to insert both watchpoints even if they are at | |
6539 | the same place. Otherwise the watchpoint will only trigger when | |
6540 | the condition of whichever watchpoint was inserted evaluates to | |
6541 | true, not giving a chance for GDB to check the condition of the | |
6542 | other watchpoint. */ | |
3a5c3e22 | 6543 | if ((w1->cond_exp |
4a64f543 MS |
6544 | && target_can_accel_watchpoint_condition (loc1->address, |
6545 | loc1->length, | |
0cf6dd15 | 6546 | loc1->watchpoint_type, |
3a5c3e22 PA |
6547 | w1->cond_exp)) |
6548 | || (w2->cond_exp | |
4a64f543 MS |
6549 | && target_can_accel_watchpoint_condition (loc2->address, |
6550 | loc2->length, | |
0cf6dd15 | 6551 | loc2->watchpoint_type, |
3a5c3e22 | 6552 | w2->cond_exp))) |
0cf6dd15 TJB |
6553 | return 0; |
6554 | ||
85d721b8 PA |
6555 | /* Note that this checks the owner's type, not the location's. In |
6556 | case the target does not support read watchpoints, but does | |
6557 | support access watchpoints, we'll have bp_read_watchpoint | |
6558 | watchpoints with hw_access locations. Those should be considered | |
6559 | duplicates of hw_read locations. The hw_read locations will | |
6560 | become hw_access locations later. */ | |
2d134ed3 PA |
6561 | return (loc1->owner->type == loc2->owner->type |
6562 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6563 | && loc1->address == loc2->address | |
6564 | && loc1->length == loc2->length); | |
e4f237da KB |
6565 | } |
6566 | ||
6c95b8df PA |
6567 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
6568 | same breakpoint location. In most targets, this can only be true | |
6569 | if ASPACE1 matches ASPACE2. On targets that have global | |
6570 | breakpoints, the address space doesn't really matter. */ | |
6571 | ||
6572 | static int | |
6573 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
6574 | struct address_space *aspace2, CORE_ADDR addr2) | |
6575 | { | |
6576 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
6577 | || aspace1 == aspace2) | |
6578 | && addr1 == addr2); | |
6579 | } | |
6580 | ||
f1310107 TJB |
6581 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6582 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6583 | matches ASPACE2. On targets that have global breakpoints, the address | |
6584 | space doesn't really matter. */ | |
6585 | ||
6586 | static int | |
6587 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6588 | int len1, struct address_space *aspace2, | |
6589 | CORE_ADDR addr2) | |
6590 | { | |
6591 | return ((gdbarch_has_global_breakpoints (target_gdbarch) | |
6592 | || aspace1 == aspace2) | |
6593 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6594 | } | |
6595 | ||
6596 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6597 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6598 | matches the breakpoint's address space. On targets that have global | |
6599 | breakpoints, the address space doesn't really matter. */ | |
6600 | ||
6601 | static int | |
6602 | breakpoint_location_address_match (struct bp_location *bl, | |
6603 | struct address_space *aspace, | |
6604 | CORE_ADDR addr) | |
6605 | { | |
6606 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6607 | aspace, addr) | |
6608 | || (bl->length | |
6609 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6610 | bl->address, bl->length, | |
6611 | aspace, addr))); | |
6612 | } | |
6613 | ||
1e4d1764 YQ |
6614 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6615 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6616 | true, otherwise returns false. */ | |
6617 | ||
6618 | static int | |
6619 | tracepoint_locations_match (struct bp_location *loc1, | |
6620 | struct bp_location *loc2) | |
6621 | { | |
6622 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6623 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6624 | locations at the same address of different tracepoints are regarded as | |
6625 | different locations. */ | |
6626 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6627 | else | |
6628 | return 0; | |
6629 | } | |
6630 | ||
2d134ed3 PA |
6631 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6632 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6633 | represent the same location. */ | |
6634 | ||
6635 | static int | |
4a64f543 MS |
6636 | breakpoint_locations_match (struct bp_location *loc1, |
6637 | struct bp_location *loc2) | |
2d134ed3 | 6638 | { |
2bdf28a0 JK |
6639 | int hw_point1, hw_point2; |
6640 | ||
6641 | /* Both of them must not be in moribund_locations. */ | |
6642 | gdb_assert (loc1->owner != NULL); | |
6643 | gdb_assert (loc2->owner != NULL); | |
6644 | ||
6645 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6646 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6647 | |
6648 | if (hw_point1 != hw_point2) | |
6649 | return 0; | |
6650 | else if (hw_point1) | |
6651 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6652 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6653 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6654 | else |
f1310107 TJB |
6655 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6656 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6657 | loc2->pspace->aspace, loc2->address) | |
6658 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6659 | } |
6660 | ||
76897487 KB |
6661 | static void |
6662 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6663 | int bnum, int have_bnum) | |
6664 | { | |
f63fbe86 MS |
6665 | /* The longest string possibly returned by hex_string_custom |
6666 | is 50 chars. These must be at least that big for safety. */ | |
6667 | char astr1[64]; | |
6668 | char astr2[64]; | |
76897487 | 6669 | |
bb599908 PH |
6670 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6671 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6672 | if (have_bnum) |
8a3fe4f8 | 6673 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6674 | bnum, astr1, astr2); |
6675 | else | |
8a3fe4f8 | 6676 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6677 | } |
6678 | ||
4a64f543 MS |
6679 | /* Adjust a breakpoint's address to account for architectural |
6680 | constraints on breakpoint placement. Return the adjusted address. | |
6681 | Note: Very few targets require this kind of adjustment. For most | |
6682 | targets, this function is simply the identity function. */ | |
76897487 KB |
6683 | |
6684 | static CORE_ADDR | |
a6d9a66e UW |
6685 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6686 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6687 | { |
a6d9a66e | 6688 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6689 | { |
6690 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6691 | return bpaddr; | |
6692 | } | |
88f7da05 KB |
6693 | else if (bptype == bp_watchpoint |
6694 | || bptype == bp_hardware_watchpoint | |
6695 | || bptype == bp_read_watchpoint | |
6696 | || bptype == bp_access_watchpoint | |
fe798b75 | 6697 | || bptype == bp_catchpoint) |
88f7da05 KB |
6698 | { |
6699 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6700 | have their addresses modified. */ | |
6701 | return bpaddr; | |
6702 | } | |
76897487 KB |
6703 | else |
6704 | { | |
6705 | CORE_ADDR adjusted_bpaddr; | |
6706 | ||
6707 | /* Some targets have architectural constraints on the placement | |
6708 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 6709 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
6710 | |
6711 | /* An adjusted breakpoint address can significantly alter | |
6712 | a user's expectations. Print a warning if an adjustment | |
6713 | is required. */ | |
6714 | if (adjusted_bpaddr != bpaddr) | |
6715 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6716 | ||
6717 | return adjusted_bpaddr; | |
6718 | } | |
6719 | } | |
6720 | ||
28010a5d PA |
6721 | void |
6722 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
6723 | struct breakpoint *owner) | |
7cc221ef | 6724 | { |
7cc221ef DJ |
6725 | memset (loc, 0, sizeof (*loc)); |
6726 | ||
348d480f PA |
6727 | gdb_assert (ops != NULL); |
6728 | ||
28010a5d PA |
6729 | loc->ops = ops; |
6730 | loc->owner = owner; | |
511a6cd4 | 6731 | loc->cond = NULL; |
b775012e | 6732 | loc->cond_bytecode = NULL; |
0d381245 VP |
6733 | loc->shlib_disabled = 0; |
6734 | loc->enabled = 1; | |
e049a4b5 | 6735 | |
28010a5d | 6736 | switch (owner->type) |
e049a4b5 DJ |
6737 | { |
6738 | case bp_breakpoint: | |
6739 | case bp_until: | |
6740 | case bp_finish: | |
6741 | case bp_longjmp: | |
6742 | case bp_longjmp_resume: | |
e2e4d78b | 6743 | case bp_longjmp_call_dummy: |
186c406b TT |
6744 | case bp_exception: |
6745 | case bp_exception_resume: | |
e049a4b5 | 6746 | case bp_step_resume: |
2c03e5be | 6747 | case bp_hp_step_resume: |
e049a4b5 DJ |
6748 | case bp_watchpoint_scope: |
6749 | case bp_call_dummy: | |
aa7d318d | 6750 | case bp_std_terminate: |
e049a4b5 DJ |
6751 | case bp_shlib_event: |
6752 | case bp_thread_event: | |
6753 | case bp_overlay_event: | |
4efc6507 | 6754 | case bp_jit_event: |
0fd8e87f | 6755 | case bp_longjmp_master: |
aa7d318d | 6756 | case bp_std_terminate_master: |
186c406b | 6757 | case bp_exception_master: |
0e30163f JK |
6758 | case bp_gnu_ifunc_resolver: |
6759 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6760 | case bp_dprintf: |
e049a4b5 | 6761 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6762 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6763 | break; |
6764 | case bp_hardware_breakpoint: | |
6765 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6766 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6767 | break; |
6768 | case bp_hardware_watchpoint: | |
6769 | case bp_read_watchpoint: | |
6770 | case bp_access_watchpoint: | |
6771 | loc->loc_type = bp_loc_hardware_watchpoint; | |
6772 | break; | |
6773 | case bp_watchpoint: | |
ce78b96d | 6774 | case bp_catchpoint: |
15c3d785 PA |
6775 | case bp_tracepoint: |
6776 | case bp_fast_tracepoint: | |
0fb4aa4b | 6777 | case bp_static_tracepoint: |
e049a4b5 DJ |
6778 | loc->loc_type = bp_loc_other; |
6779 | break; | |
6780 | default: | |
e2e0b3e5 | 6781 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
6782 | } |
6783 | ||
f431efe5 | 6784 | loc->refc = 1; |
28010a5d PA |
6785 | } |
6786 | ||
6787 | /* Allocate a struct bp_location. */ | |
6788 | ||
6789 | static struct bp_location * | |
6790 | allocate_bp_location (struct breakpoint *bpt) | |
6791 | { | |
348d480f PA |
6792 | return bpt->ops->allocate_location (bpt); |
6793 | } | |
7cc221ef | 6794 | |
f431efe5 PA |
6795 | static void |
6796 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6797 | { |
348d480f | 6798 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
6799 | xfree (loc); |
6800 | } | |
6801 | ||
f431efe5 PA |
6802 | /* Increment reference count. */ |
6803 | ||
6804 | static void | |
6805 | incref_bp_location (struct bp_location *bl) | |
6806 | { | |
6807 | ++bl->refc; | |
6808 | } | |
6809 | ||
6810 | /* Decrement reference count. If the reference count reaches 0, | |
6811 | destroy the bp_location. Sets *BLP to NULL. */ | |
6812 | ||
6813 | static void | |
6814 | decref_bp_location (struct bp_location **blp) | |
6815 | { | |
0807b50c PA |
6816 | gdb_assert ((*blp)->refc > 0); |
6817 | ||
f431efe5 PA |
6818 | if (--(*blp)->refc == 0) |
6819 | free_bp_location (*blp); | |
6820 | *blp = NULL; | |
6821 | } | |
6822 | ||
346774a9 | 6823 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 6824 | |
346774a9 PA |
6825 | static void |
6826 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 6827 | { |
346774a9 | 6828 | struct breakpoint *b1; |
c906108c | 6829 | |
346774a9 PA |
6830 | /* Add this breakpoint to the end of the chain so that a list of |
6831 | breakpoints will come out in order of increasing numbers. */ | |
6832 | ||
6833 | b1 = breakpoint_chain; | |
6834 | if (b1 == 0) | |
6835 | breakpoint_chain = b; | |
6836 | else | |
6837 | { | |
6838 | while (b1->next) | |
6839 | b1 = b1->next; | |
6840 | b1->next = b; | |
6841 | } | |
6842 | } | |
6843 | ||
6844 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
6845 | ||
6846 | static void | |
6847 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
6848 | struct gdbarch *gdbarch, | |
28010a5d | 6849 | enum bptype bptype, |
c0a91b2b | 6850 | const struct breakpoint_ops *ops) |
346774a9 | 6851 | { |
c906108c | 6852 | memset (b, 0, sizeof (*b)); |
2219d63c | 6853 | |
348d480f PA |
6854 | gdb_assert (ops != NULL); |
6855 | ||
28010a5d | 6856 | b->ops = ops; |
4d28f7a8 | 6857 | b->type = bptype; |
a6d9a66e | 6858 | b->gdbarch = gdbarch; |
c906108c SS |
6859 | b->language = current_language->la_language; |
6860 | b->input_radix = input_radix; | |
6861 | b->thread = -1; | |
b5de0fa7 | 6862 | b->enable_state = bp_enabled; |
c906108c SS |
6863 | b->next = 0; |
6864 | b->silent = 0; | |
6865 | b->ignore_count = 0; | |
6866 | b->commands = NULL; | |
818dd999 | 6867 | b->frame_id = null_frame_id; |
0d381245 | 6868 | b->condition_not_parsed = 0; |
84f4c1fe | 6869 | b->py_bp_object = NULL; |
d0fb5eae | 6870 | b->related_breakpoint = b; |
346774a9 PA |
6871 | } |
6872 | ||
6873 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
6874 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
6875 | |
6876 | static struct breakpoint * | |
6877 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 6878 | enum bptype bptype, |
c0a91b2b | 6879 | const struct breakpoint_ops *ops) |
346774a9 PA |
6880 | { |
6881 | struct breakpoint *b = XNEW (struct breakpoint); | |
6882 | ||
348d480f | 6883 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 6884 | add_to_breakpoint_chain (b); |
0d381245 VP |
6885 | return b; |
6886 | } | |
6887 | ||
0e30163f JK |
6888 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
6889 | resolutions should be made as the user specified the location explicitly | |
6890 | enough. */ | |
6891 | ||
0d381245 | 6892 | static void |
0e30163f | 6893 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 6894 | { |
2bdf28a0 JK |
6895 | gdb_assert (loc->owner != NULL); |
6896 | ||
0d381245 | 6897 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 6898 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 6899 | || is_tracepoint (loc->owner)) |
0d381245 | 6900 | { |
0e30163f | 6901 | int is_gnu_ifunc; |
2c02bd72 | 6902 | const char *function_name; |
6a3a010b | 6903 | CORE_ADDR func_addr; |
0e30163f | 6904 | |
2c02bd72 | 6905 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 6906 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
6907 | |
6908 | if (is_gnu_ifunc && !explicit_loc) | |
6909 | { | |
6910 | struct breakpoint *b = loc->owner; | |
6911 | ||
6912 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 6913 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
6914 | &loc->requested_address)) |
6915 | { | |
6916 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
6917 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
6918 | loc->requested_address, | |
6919 | b->type); | |
6920 | } | |
6921 | else if (b->type == bp_breakpoint && b->loc == loc | |
6922 | && loc->next == NULL && b->related_breakpoint == b) | |
6923 | { | |
6924 | /* Create only the whole new breakpoint of this type but do not | |
6925 | mess more complicated breakpoints with multiple locations. */ | |
6926 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
6927 | /* Remember the resolver's address for use by the return |
6928 | breakpoint. */ | |
6929 | loc->related_address = func_addr; | |
0e30163f JK |
6930 | } |
6931 | } | |
6932 | ||
2c02bd72 DE |
6933 | if (function_name) |
6934 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
6935 | } |
6936 | } | |
6937 | ||
a6d9a66e | 6938 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 6939 | struct gdbarch * |
a6d9a66e UW |
6940 | get_sal_arch (struct symtab_and_line sal) |
6941 | { | |
6942 | if (sal.section) | |
6943 | return get_objfile_arch (sal.section->objfile); | |
6944 | if (sal.symtab) | |
6945 | return get_objfile_arch (sal.symtab->objfile); | |
6946 | ||
6947 | return NULL; | |
6948 | } | |
6949 | ||
346774a9 PA |
6950 | /* Low level routine for partially initializing a breakpoint of type |
6951 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 6952 | file name, and line number are provided by SAL. |
0d381245 VP |
6953 | |
6954 | It is expected that the caller will complete the initialization of | |
6955 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 6956 | information regarding the creation of a new breakpoint. */ |
0d381245 | 6957 | |
346774a9 PA |
6958 | static void |
6959 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 6960 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 6961 | const struct breakpoint_ops *ops) |
0d381245 | 6962 | { |
28010a5d | 6963 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 6964 | |
3742cc8b | 6965 | add_location_to_breakpoint (b, &sal); |
0d381245 | 6966 | |
6c95b8df PA |
6967 | if (bptype != bp_catchpoint) |
6968 | gdb_assert (sal.pspace != NULL); | |
6969 | ||
f8eba3c6 TT |
6970 | /* Store the program space that was used to set the breakpoint, |
6971 | except for ordinary breakpoints, which are independent of the | |
6972 | program space. */ | |
6973 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
6974 | b->pspace = sal.pspace; | |
0d381245 | 6975 | |
c906108c | 6976 | breakpoints_changed (); |
346774a9 | 6977 | } |
c906108c | 6978 | |
346774a9 PA |
6979 | /* set_raw_breakpoint is a low level routine for allocating and |
6980 | partially initializing a breakpoint of type BPTYPE. The newly | |
6981 | created breakpoint's address, section, source file name, and line | |
6982 | number are provided by SAL. The newly created and partially | |
6983 | initialized breakpoint is added to the breakpoint chain and | |
6984 | is also returned as the value of this function. | |
6985 | ||
6986 | It is expected that the caller will complete the initialization of | |
6987 | the newly created breakpoint struct as well as output any status | |
6988 | information regarding the creation of a new breakpoint. In | |
6989 | particular, set_raw_breakpoint does NOT set the breakpoint | |
6990 | number! Care should be taken to not allow an error to occur | |
6991 | prior to completing the initialization of the breakpoint. If this | |
6992 | should happen, a bogus breakpoint will be left on the chain. */ | |
6993 | ||
6994 | struct breakpoint * | |
6995 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 6996 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 6997 | const struct breakpoint_ops *ops) |
346774a9 PA |
6998 | { |
6999 | struct breakpoint *b = XNEW (struct breakpoint); | |
7000 | ||
348d480f | 7001 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7002 | add_to_breakpoint_chain (b); |
c906108c SS |
7003 | return b; |
7004 | } | |
7005 | ||
c2c6d25f JM |
7006 | |
7007 | /* Note that the breakpoint object B describes a permanent breakpoint | |
7008 | instruction, hard-wired into the inferior's code. */ | |
7009 | void | |
7010 | make_breakpoint_permanent (struct breakpoint *b) | |
7011 | { | |
0d381245 | 7012 | struct bp_location *bl; |
cc59ec59 | 7013 | |
b5de0fa7 | 7014 | b->enable_state = bp_permanent; |
c2c6d25f | 7015 | |
4a64f543 MS |
7016 | /* By definition, permanent breakpoints are already present in the |
7017 | code. Mark all locations as inserted. For now, | |
7018 | make_breakpoint_permanent is called in just one place, so it's | |
7019 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 7020 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
7021 | for (bl = b->loc; bl; bl = bl->next) |
7022 | bl->inserted = 1; | |
c2c6d25f JM |
7023 | } |
7024 | ||
53a5351d | 7025 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7026 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7027 | initiated the operation. */ | |
c906108c SS |
7028 | |
7029 | void | |
186c406b | 7030 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7031 | { |
35df4500 | 7032 | struct breakpoint *b, *b_tmp; |
186c406b | 7033 | int thread = tp->num; |
0fd8e87f UW |
7034 | |
7035 | /* To avoid having to rescan all objfile symbols at every step, | |
7036 | we maintain a list of continually-inserted but always disabled | |
7037 | longjmp "master" breakpoints. Here, we simply create momentary | |
7038 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7039 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7040 | if (b->pspace == current_program_space |
186c406b TT |
7041 | && (b->type == bp_longjmp_master |
7042 | || b->type == bp_exception_master)) | |
0fd8e87f | 7043 | { |
06edf0c0 PA |
7044 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7045 | struct breakpoint *clone; | |
cc59ec59 | 7046 | |
e2e4d78b JK |
7047 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7048 | after their removal. */ | |
06edf0c0 | 7049 | clone = momentary_breakpoint_from_master (b, type, |
e2e4d78b | 7050 | &longjmp_breakpoint_ops); |
0fd8e87f UW |
7051 | clone->thread = thread; |
7052 | } | |
186c406b TT |
7053 | |
7054 | tp->initiating_frame = frame; | |
c906108c SS |
7055 | } |
7056 | ||
611c83ae | 7057 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7058 | void |
611c83ae | 7059 | delete_longjmp_breakpoint (int thread) |
c906108c | 7060 | { |
35df4500 | 7061 | struct breakpoint *b, *b_tmp; |
c906108c | 7062 | |
35df4500 | 7063 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7064 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7065 | { |
7066 | if (b->thread == thread) | |
7067 | delete_breakpoint (b); | |
7068 | } | |
c906108c SS |
7069 | } |
7070 | ||
f59f708a PA |
7071 | void |
7072 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7073 | { | |
7074 | struct breakpoint *b, *b_tmp; | |
7075 | ||
7076 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7077 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7078 | { | |
7079 | if (b->thread == thread) | |
7080 | b->disposition = disp_del_at_next_stop; | |
7081 | } | |
7082 | } | |
7083 | ||
e2e4d78b JK |
7084 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7085 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7086 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7087 | breakpoints. */ | |
7088 | ||
7089 | struct breakpoint * | |
7090 | set_longjmp_breakpoint_for_call_dummy (void) | |
7091 | { | |
7092 | struct breakpoint *b, *retval = NULL; | |
7093 | ||
7094 | ALL_BREAKPOINTS (b) | |
7095 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7096 | { | |
7097 | struct breakpoint *new_b; | |
7098 | ||
7099 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7100 | &momentary_breakpoint_ops); | |
7101 | new_b->thread = pid_to_thread_id (inferior_ptid); | |
7102 | ||
7103 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7104 | ||
7105 | gdb_assert (new_b->related_breakpoint == new_b); | |
7106 | if (retval == NULL) | |
7107 | retval = new_b; | |
7108 | new_b->related_breakpoint = retval; | |
7109 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7110 | retval = retval->related_breakpoint; | |
7111 | retval->related_breakpoint = new_b; | |
7112 | } | |
7113 | ||
7114 | return retval; | |
7115 | } | |
7116 | ||
7117 | /* Verify all existing dummy frames and their associated breakpoints for | |
7118 | THREAD. Remove those which can no longer be found in the current frame | |
7119 | stack. | |
7120 | ||
7121 | You should call this function only at places where it is safe to currently | |
7122 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7123 | frames. */ | |
7124 | ||
7125 | void | |
7126 | check_longjmp_breakpoint_for_call_dummy (int thread) | |
7127 | { | |
7128 | struct breakpoint *b, *b_tmp; | |
7129 | ||
7130 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7131 | if (b->type == bp_longjmp_call_dummy && b->thread == thread) | |
7132 | { | |
7133 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7134 | ||
7135 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7136 | dummy_b = dummy_b->related_breakpoint; | |
7137 | if (dummy_b->type != bp_call_dummy | |
7138 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7139 | continue; | |
7140 | ||
7141 | dummy_frame_discard (dummy_b->frame_id); | |
7142 | ||
7143 | while (b->related_breakpoint != b) | |
7144 | { | |
7145 | if (b_tmp == b->related_breakpoint) | |
7146 | b_tmp = b->related_breakpoint->next; | |
7147 | delete_breakpoint (b->related_breakpoint); | |
7148 | } | |
7149 | delete_breakpoint (b); | |
7150 | } | |
7151 | } | |
7152 | ||
1900040c MS |
7153 | void |
7154 | enable_overlay_breakpoints (void) | |
7155 | { | |
52f0bd74 | 7156 | struct breakpoint *b; |
1900040c MS |
7157 | |
7158 | ALL_BREAKPOINTS (b) | |
7159 | if (b->type == bp_overlay_event) | |
7160 | { | |
7161 | b->enable_state = bp_enabled; | |
b60e7edf | 7162 | update_global_location_list (1); |
c02f5703 | 7163 | overlay_events_enabled = 1; |
1900040c MS |
7164 | } |
7165 | } | |
7166 | ||
7167 | void | |
7168 | disable_overlay_breakpoints (void) | |
7169 | { | |
52f0bd74 | 7170 | struct breakpoint *b; |
1900040c MS |
7171 | |
7172 | ALL_BREAKPOINTS (b) | |
7173 | if (b->type == bp_overlay_event) | |
7174 | { | |
7175 | b->enable_state = bp_disabled; | |
b60e7edf | 7176 | update_global_location_list (0); |
c02f5703 | 7177 | overlay_events_enabled = 0; |
1900040c MS |
7178 | } |
7179 | } | |
7180 | ||
aa7d318d TT |
7181 | /* Set an active std::terminate breakpoint for each std::terminate |
7182 | master breakpoint. */ | |
7183 | void | |
7184 | set_std_terminate_breakpoint (void) | |
7185 | { | |
35df4500 | 7186 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7187 | |
35df4500 | 7188 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7189 | if (b->pspace == current_program_space |
7190 | && b->type == bp_std_terminate_master) | |
7191 | { | |
06edf0c0 PA |
7192 | momentary_breakpoint_from_master (b, bp_std_terminate, |
7193 | &momentary_breakpoint_ops); | |
aa7d318d TT |
7194 | } |
7195 | } | |
7196 | ||
7197 | /* Delete all the std::terminate breakpoints. */ | |
7198 | void | |
7199 | delete_std_terminate_breakpoint (void) | |
7200 | { | |
35df4500 | 7201 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7202 | |
35df4500 | 7203 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7204 | if (b->type == bp_std_terminate) |
7205 | delete_breakpoint (b); | |
7206 | } | |
7207 | ||
c4093a6a | 7208 | struct breakpoint * |
a6d9a66e | 7209 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7210 | { |
7211 | struct breakpoint *b; | |
c4093a6a | 7212 | |
06edf0c0 PA |
7213 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7214 | &internal_breakpoint_ops); | |
7215 | ||
b5de0fa7 | 7216 | b->enable_state = bp_enabled; |
c4093a6a | 7217 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
7218 | b->addr_string |
7219 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 7220 | |
b60e7edf | 7221 | update_global_location_list_nothrow (1); |
74960c60 | 7222 | |
c4093a6a JM |
7223 | return b; |
7224 | } | |
7225 | ||
7226 | void | |
7227 | remove_thread_event_breakpoints (void) | |
7228 | { | |
35df4500 | 7229 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7230 | |
35df4500 | 7231 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7232 | if (b->type == bp_thread_event |
7233 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7234 | delete_breakpoint (b); |
7235 | } | |
7236 | ||
0101ce28 JJ |
7237 | struct lang_and_radix |
7238 | { | |
7239 | enum language lang; | |
7240 | int radix; | |
7241 | }; | |
7242 | ||
4efc6507 DE |
7243 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7244 | ||
7245 | struct breakpoint * | |
7246 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7247 | { | |
7248 | struct breakpoint *b; | |
7249 | ||
06edf0c0 PA |
7250 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7251 | &internal_breakpoint_ops); | |
4efc6507 DE |
7252 | update_global_location_list_nothrow (1); |
7253 | return b; | |
7254 | } | |
0101ce28 | 7255 | |
03673fc7 PP |
7256 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7257 | ||
7258 | void | |
7259 | remove_jit_event_breakpoints (void) | |
7260 | { | |
7261 | struct breakpoint *b, *b_tmp; | |
7262 | ||
7263 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7264 | if (b->type == bp_jit_event | |
7265 | && b->loc->pspace == current_program_space) | |
7266 | delete_breakpoint (b); | |
7267 | } | |
7268 | ||
cae688ec JJ |
7269 | void |
7270 | remove_solib_event_breakpoints (void) | |
7271 | { | |
35df4500 | 7272 | struct breakpoint *b, *b_tmp; |
cae688ec | 7273 | |
35df4500 | 7274 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7275 | if (b->type == bp_shlib_event |
7276 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7277 | delete_breakpoint (b); |
7278 | } | |
7279 | ||
7280 | struct breakpoint * | |
a6d9a66e | 7281 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
7282 | { |
7283 | struct breakpoint *b; | |
7284 | ||
06edf0c0 PA |
7285 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7286 | &internal_breakpoint_ops); | |
b60e7edf | 7287 | update_global_location_list_nothrow (1); |
cae688ec JJ |
7288 | return b; |
7289 | } | |
7290 | ||
7291 | /* Disable any breakpoints that are on code in shared libraries. Only | |
7292 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7293 | ||
7294 | void | |
cb851954 | 7295 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7296 | { |
876fa593 | 7297 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7298 | |
876fa593 | 7299 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7300 | { |
2bdf28a0 | 7301 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7302 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7303 | |
4a64f543 MS |
7304 | /* We apply the check to all breakpoints, including disabled for |
7305 | those with loc->duplicate set. This is so that when breakpoint | |
7306 | becomes enabled, or the duplicate is removed, gdb will try to | |
7307 | insert all breakpoints. If we don't set shlib_disabled here, | |
7308 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7309 | if (((b->type == bp_breakpoint) |
508ccb1f | 7310 | || (b->type == bp_jit_event) |
1042e4c0 | 7311 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7312 | || (is_tracepoint (b))) |
6c95b8df | 7313 | && loc->pspace == current_program_space |
0d381245 | 7314 | && !loc->shlib_disabled |
a77053c2 | 7315 | #ifdef PC_SOLIB |
0d381245 | 7316 | && PC_SOLIB (loc->address) |
a77053c2 | 7317 | #else |
6c95b8df | 7318 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 MK |
7319 | #endif |
7320 | ) | |
0d381245 VP |
7321 | { |
7322 | loc->shlib_disabled = 1; | |
7323 | } | |
cae688ec JJ |
7324 | } |
7325 | } | |
7326 | ||
1e4d1764 YQ |
7327 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
7328 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 7329 | disabled. */ |
84acb35a | 7330 | |
75149521 | 7331 | static void |
84acb35a JJ |
7332 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7333 | { | |
876fa593 | 7334 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7335 | int disabled_shlib_breaks = 0; |
7336 | ||
c86cf029 VP |
7337 | /* SunOS a.out shared libraries are always mapped, so do not |
7338 | disable breakpoints; they will only be reported as unloaded | |
7339 | through clear_solib when GDB discards its shared library | |
7340 | list. See clear_solib for more information. */ | |
7341 | if (exec_bfd != NULL | |
7342 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7343 | return; | |
7344 | ||
876fa593 | 7345 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7346 | { |
2bdf28a0 | 7347 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7348 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7349 | |
1e4d1764 | 7350 | if (solib->pspace == loc->pspace |
e2dd7057 | 7351 | && !loc->shlib_disabled |
1e4d1764 YQ |
7352 | && (((b->type == bp_breakpoint |
7353 | || b->type == bp_jit_event | |
7354 | || b->type == bp_hardware_breakpoint) | |
7355 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7356 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7357 | || is_tracepoint (b)) | |
e2dd7057 | 7358 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7359 | { |
e2dd7057 PP |
7360 | loc->shlib_disabled = 1; |
7361 | /* At this point, we cannot rely on remove_breakpoint | |
7362 | succeeding so we must mark the breakpoint as not inserted | |
7363 | to prevent future errors occurring in remove_breakpoints. */ | |
7364 | loc->inserted = 0; | |
8d3788bd VP |
7365 | |
7366 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7367 | observer_notify_breakpoint_modified (b); | |
7368 | ||
e2dd7057 PP |
7369 | if (!disabled_shlib_breaks) |
7370 | { | |
7371 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7372 | warning (_("Temporarily disabling breakpoints " |
7373 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7374 | solib->so_name); |
84acb35a | 7375 | } |
e2dd7057 | 7376 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7377 | } |
7378 | } | |
84acb35a JJ |
7379 | } |
7380 | ||
ce78b96d JB |
7381 | /* FORK & VFORK catchpoints. */ |
7382 | ||
e29a4733 PA |
7383 | /* An instance of this type is used to represent a fork or vfork |
7384 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7385 | class; users downcast to "struct breakpoint *" when needed. A | |
7386 | breakpoint is really of this type iff its ops pointer points to | |
7387 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7388 | ||
7389 | struct fork_catchpoint | |
7390 | { | |
7391 | /* The base class. */ | |
7392 | struct breakpoint base; | |
7393 | ||
7394 | /* Process id of a child process whose forking triggered this | |
7395 | catchpoint. This field is only valid immediately after this | |
7396 | catchpoint has triggered. */ | |
7397 | ptid_t forked_inferior_pid; | |
7398 | }; | |
7399 | ||
4a64f543 MS |
7400 | /* Implement the "insert" breakpoint_ops method for fork |
7401 | catchpoints. */ | |
ce78b96d | 7402 | |
77b06cd7 TJB |
7403 | static int |
7404 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7405 | { |
77b06cd7 | 7406 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7407 | } |
7408 | ||
4a64f543 MS |
7409 | /* Implement the "remove" breakpoint_ops method for fork |
7410 | catchpoints. */ | |
ce78b96d JB |
7411 | |
7412 | static int | |
77b06cd7 | 7413 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
7414 | { |
7415 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
7416 | } | |
7417 | ||
7418 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7419 | catchpoints. */ | |
7420 | ||
7421 | static int | |
f1310107 | 7422 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7423 | struct address_space *aspace, CORE_ADDR bp_addr, |
7424 | const struct target_waitstatus *ws) | |
ce78b96d | 7425 | { |
e29a4733 PA |
7426 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7427 | ||
f90263c1 TT |
7428 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7429 | return 0; | |
7430 | ||
7431 | c->forked_inferior_pid = ws->value.related_pid; | |
7432 | return 1; | |
ce78b96d JB |
7433 | } |
7434 | ||
4a64f543 MS |
7435 | /* Implement the "print_it" breakpoint_ops method for fork |
7436 | catchpoints. */ | |
ce78b96d JB |
7437 | |
7438 | static enum print_stop_action | |
348d480f | 7439 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7440 | { |
36dfb11c | 7441 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7442 | struct breakpoint *b = bs->breakpoint_at; |
7443 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7444 | |
ce78b96d | 7445 | annotate_catchpoint (b->number); |
36dfb11c TT |
7446 | if (b->disposition == disp_del) |
7447 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7448 | else | |
7449 | ui_out_text (uiout, "\nCatchpoint "); | |
7450 | if (ui_out_is_mi_like_p (uiout)) | |
7451 | { | |
7452 | ui_out_field_string (uiout, "reason", | |
7453 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7454 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7455 | } | |
7456 | ui_out_field_int (uiout, "bkptno", b->number); | |
7457 | ui_out_text (uiout, " (forked process "); | |
7458 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7459 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7460 | return PRINT_SRC_AND_LOC; |
7461 | } | |
7462 | ||
4a64f543 MS |
7463 | /* Implement the "print_one" breakpoint_ops method for fork |
7464 | catchpoints. */ | |
ce78b96d JB |
7465 | |
7466 | static void | |
a6d9a66e | 7467 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7468 | { |
e29a4733 | 7469 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7470 | struct value_print_options opts; |
79a45e25 | 7471 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7472 | |
7473 | get_user_print_options (&opts); | |
7474 | ||
4a64f543 MS |
7475 | /* Field 4, the address, is omitted (which makes the columns not |
7476 | line up too nicely with the headers, but the effect is relatively | |
7477 | readable). */ | |
79a45b7d | 7478 | if (opts.addressprint) |
ce78b96d JB |
7479 | ui_out_field_skip (uiout, "addr"); |
7480 | annotate_field (5); | |
7481 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7482 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7483 | { |
7484 | ui_out_text (uiout, ", process "); | |
7485 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7486 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7487 | ui_out_spaces (uiout, 1); |
7488 | } | |
7489 | } | |
7490 | ||
7491 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7492 | catchpoints. */ | |
7493 | ||
7494 | static void | |
7495 | print_mention_catch_fork (struct breakpoint *b) | |
7496 | { | |
7497 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7498 | } | |
7499 | ||
6149aea9 PA |
7500 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7501 | catchpoints. */ | |
7502 | ||
7503 | static void | |
7504 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7505 | { | |
7506 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7507 | print_recreate_thread (b, fp); |
6149aea9 PA |
7508 | } |
7509 | ||
ce78b96d JB |
7510 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7511 | ||
2060206e | 7512 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7513 | |
4a64f543 MS |
7514 | /* Implement the "insert" breakpoint_ops method for vfork |
7515 | catchpoints. */ | |
ce78b96d | 7516 | |
77b06cd7 TJB |
7517 | static int |
7518 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7519 | { |
77b06cd7 | 7520 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7521 | } |
7522 | ||
4a64f543 MS |
7523 | /* Implement the "remove" breakpoint_ops method for vfork |
7524 | catchpoints. */ | |
ce78b96d JB |
7525 | |
7526 | static int | |
77b06cd7 | 7527 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
7528 | { |
7529 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
7530 | } | |
7531 | ||
7532 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7533 | catchpoints. */ | |
7534 | ||
7535 | static int | |
f1310107 | 7536 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7537 | struct address_space *aspace, CORE_ADDR bp_addr, |
7538 | const struct target_waitstatus *ws) | |
ce78b96d | 7539 | { |
e29a4733 PA |
7540 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7541 | ||
f90263c1 TT |
7542 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7543 | return 0; | |
7544 | ||
7545 | c->forked_inferior_pid = ws->value.related_pid; | |
7546 | return 1; | |
ce78b96d JB |
7547 | } |
7548 | ||
4a64f543 MS |
7549 | /* Implement the "print_it" breakpoint_ops method for vfork |
7550 | catchpoints. */ | |
ce78b96d JB |
7551 | |
7552 | static enum print_stop_action | |
348d480f | 7553 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7554 | { |
36dfb11c | 7555 | struct ui_out *uiout = current_uiout; |
348d480f | 7556 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7557 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7558 | ||
ce78b96d | 7559 | annotate_catchpoint (b->number); |
36dfb11c TT |
7560 | if (b->disposition == disp_del) |
7561 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7562 | else | |
7563 | ui_out_text (uiout, "\nCatchpoint "); | |
7564 | if (ui_out_is_mi_like_p (uiout)) | |
7565 | { | |
7566 | ui_out_field_string (uiout, "reason", | |
7567 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
7568 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7569 | } | |
7570 | ui_out_field_int (uiout, "bkptno", b->number); | |
7571 | ui_out_text (uiout, " (vforked process "); | |
7572 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7573 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7574 | return PRINT_SRC_AND_LOC; |
7575 | } | |
7576 | ||
4a64f543 MS |
7577 | /* Implement the "print_one" breakpoint_ops method for vfork |
7578 | catchpoints. */ | |
ce78b96d JB |
7579 | |
7580 | static void | |
a6d9a66e | 7581 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7582 | { |
e29a4733 | 7583 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7584 | struct value_print_options opts; |
79a45e25 | 7585 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7586 | |
7587 | get_user_print_options (&opts); | |
4a64f543 MS |
7588 | /* Field 4, the address, is omitted (which makes the columns not |
7589 | line up too nicely with the headers, but the effect is relatively | |
7590 | readable). */ | |
79a45b7d | 7591 | if (opts.addressprint) |
ce78b96d JB |
7592 | ui_out_field_skip (uiout, "addr"); |
7593 | annotate_field (5); | |
7594 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 7595 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7596 | { |
7597 | ui_out_text (uiout, ", process "); | |
7598 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7599 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7600 | ui_out_spaces (uiout, 1); |
7601 | } | |
7602 | } | |
7603 | ||
7604 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7605 | catchpoints. */ | |
7606 | ||
7607 | static void | |
7608 | print_mention_catch_vfork (struct breakpoint *b) | |
7609 | { | |
7610 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7611 | } | |
7612 | ||
6149aea9 PA |
7613 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7614 | catchpoints. */ | |
7615 | ||
7616 | static void | |
7617 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7618 | { | |
7619 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7620 | print_recreate_thread (b, fp); |
6149aea9 PA |
7621 | } |
7622 | ||
ce78b96d JB |
7623 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7624 | ||
2060206e | 7625 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7626 | |
edcc5120 TT |
7627 | /* An instance of this type is used to represent an solib catchpoint. |
7628 | It includes a "struct breakpoint" as a kind of base class; users | |
7629 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7630 | really of this type iff its ops pointer points to | |
7631 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
7632 | ||
7633 | struct solib_catchpoint | |
7634 | { | |
7635 | /* The base class. */ | |
7636 | struct breakpoint base; | |
7637 | ||
7638 | /* True for "catch load", false for "catch unload". */ | |
7639 | unsigned char is_load; | |
7640 | ||
7641 | /* Regular expression to match, if any. COMPILED is only valid when | |
7642 | REGEX is non-NULL. */ | |
7643 | char *regex; | |
7644 | regex_t compiled; | |
7645 | }; | |
7646 | ||
7647 | static void | |
7648 | dtor_catch_solib (struct breakpoint *b) | |
7649 | { | |
7650 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7651 | ||
7652 | if (self->regex) | |
7653 | regfree (&self->compiled); | |
7654 | xfree (self->regex); | |
7655 | ||
7656 | base_breakpoint_ops.dtor (b); | |
7657 | } | |
7658 | ||
7659 | static int | |
7660 | insert_catch_solib (struct bp_location *ignore) | |
7661 | { | |
7662 | return 0; | |
7663 | } | |
7664 | ||
7665 | static int | |
7666 | remove_catch_solib (struct bp_location *ignore) | |
7667 | { | |
7668 | return 0; | |
7669 | } | |
7670 | ||
7671 | static int | |
7672 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
7673 | struct address_space *aspace, | |
7674 | CORE_ADDR bp_addr, | |
7675 | const struct target_waitstatus *ws) | |
7676 | { | |
7677 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7678 | struct breakpoint *other; | |
7679 | ||
7680 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7681 | return 1; | |
7682 | ||
7683 | ALL_BREAKPOINTS (other) | |
7684 | { | |
7685 | struct bp_location *other_bl; | |
7686 | ||
7687 | if (other == bl->owner) | |
7688 | continue; | |
7689 | ||
7690 | if (other->type != bp_shlib_event) | |
7691 | continue; | |
7692 | ||
7693 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
7694 | continue; | |
7695 | ||
7696 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7697 | { | |
7698 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7699 | return 1; | |
7700 | } | |
7701 | } | |
7702 | ||
7703 | return 0; | |
7704 | } | |
7705 | ||
7706 | static void | |
7707 | check_status_catch_solib (struct bpstats *bs) | |
7708 | { | |
7709 | struct solib_catchpoint *self | |
7710 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
7711 | int ix; | |
7712 | ||
7713 | if (self->is_load) | |
7714 | { | |
7715 | struct so_list *iter; | |
7716 | ||
7717 | for (ix = 0; | |
7718 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
7719 | ix, iter); | |
7720 | ++ix) | |
7721 | { | |
7722 | if (!self->regex | |
7723 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
7724 | return; | |
7725 | } | |
7726 | } | |
7727 | else | |
7728 | { | |
7729 | char *iter; | |
7730 | ||
7731 | for (ix = 0; | |
7732 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
7733 | ix, iter); | |
7734 | ++ix) | |
7735 | { | |
7736 | if (!self->regex | |
7737 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
7738 | return; | |
7739 | } | |
7740 | } | |
7741 | ||
7742 | bs->stop = 0; | |
7743 | bs->print_it = print_it_noop; | |
7744 | } | |
7745 | ||
7746 | static enum print_stop_action | |
7747 | print_it_catch_solib (bpstat bs) | |
7748 | { | |
7749 | struct breakpoint *b = bs->breakpoint_at; | |
7750 | struct ui_out *uiout = current_uiout; | |
7751 | ||
7752 | annotate_catchpoint (b->number); | |
7753 | if (b->disposition == disp_del) | |
7754 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7755 | else | |
7756 | ui_out_text (uiout, "\nCatchpoint "); | |
7757 | ui_out_field_int (uiout, "bkptno", b->number); | |
7758 | ui_out_text (uiout, "\n"); | |
7759 | if (ui_out_is_mi_like_p (uiout)) | |
7760 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7761 | print_solib_event (1); | |
7762 | return PRINT_SRC_AND_LOC; | |
7763 | } | |
7764 | ||
7765 | static void | |
7766 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7767 | { | |
7768 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7769 | struct value_print_options opts; | |
7770 | struct ui_out *uiout = current_uiout; | |
7771 | char *msg; | |
7772 | ||
7773 | get_user_print_options (&opts); | |
7774 | /* Field 4, the address, is omitted (which makes the columns not | |
7775 | line up too nicely with the headers, but the effect is relatively | |
7776 | readable). */ | |
7777 | if (opts.addressprint) | |
7778 | { | |
7779 | annotate_field (4); | |
7780 | ui_out_field_skip (uiout, "addr"); | |
7781 | } | |
7782 | ||
7783 | annotate_field (5); | |
7784 | if (self->is_load) | |
7785 | { | |
7786 | if (self->regex) | |
7787 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
7788 | else | |
7789 | msg = xstrdup (_("load of library")); | |
7790 | } | |
7791 | else | |
7792 | { | |
7793 | if (self->regex) | |
7794 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
7795 | else | |
7796 | msg = xstrdup (_("unload of library")); | |
7797 | } | |
7798 | ui_out_field_string (uiout, "what", msg); | |
7799 | xfree (msg); | |
7800 | } | |
7801 | ||
7802 | static void | |
7803 | print_mention_catch_solib (struct breakpoint *b) | |
7804 | { | |
7805 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7806 | ||
7807 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
7808 | self->is_load ? "load" : "unload"); | |
7809 | } | |
7810 | ||
7811 | static void | |
7812 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
7813 | { | |
7814 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7815 | ||
7816 | fprintf_unfiltered (fp, "%s %s", | |
7817 | b->disposition == disp_del ? "tcatch" : "catch", | |
7818 | self->is_load ? "load" : "unload"); | |
7819 | if (self->regex) | |
7820 | fprintf_unfiltered (fp, " %s", self->regex); | |
7821 | fprintf_unfiltered (fp, "\n"); | |
7822 | } | |
7823 | ||
7824 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
7825 | ||
7826 | /* A helper function that does all the work for "catch load" and | |
7827 | "catch unload". */ | |
7828 | ||
7829 | static void | |
7830 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
7831 | struct cmd_list_element *command) | |
7832 | { | |
7833 | struct solib_catchpoint *c; | |
7834 | struct gdbarch *gdbarch = get_current_arch (); | |
7835 | int tempflag; | |
edcc5120 TT |
7836 | struct cleanup *cleanup; |
7837 | ||
7838 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7839 | ||
7840 | if (!arg) | |
7841 | arg = ""; | |
7842 | arg = skip_spaces (arg); | |
7843 | ||
7844 | c = XCNEW (struct solib_catchpoint); | |
7845 | cleanup = make_cleanup (xfree, c); | |
7846 | ||
7847 | if (*arg != '\0') | |
7848 | { | |
7849 | int errcode; | |
7850 | ||
7851 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
7852 | if (errcode != 0) | |
7853 | { | |
7854 | char *err = get_regcomp_error (errcode, &c->compiled); | |
7855 | ||
7856 | make_cleanup (xfree, err); | |
7857 | error (_("Invalid regexp (%s): %s"), err, arg); | |
7858 | } | |
7859 | c->regex = xstrdup (arg); | |
7860 | } | |
7861 | ||
7862 | c->is_load = is_load; | |
7863 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, | |
7864 | &catch_solib_breakpoint_ops); | |
7865 | ||
7866 | discard_cleanups (cleanup); | |
7867 | install_breakpoint (0, &c->base, 1); | |
7868 | } | |
7869 | ||
7870 | static void | |
7871 | catch_load_command_1 (char *arg, int from_tty, | |
7872 | struct cmd_list_element *command) | |
7873 | { | |
7874 | catch_load_or_unload (arg, from_tty, 1, command); | |
7875 | } | |
7876 | ||
7877 | static void | |
7878 | catch_unload_command_1 (char *arg, int from_tty, | |
7879 | struct cmd_list_element *command) | |
7880 | { | |
7881 | catch_load_or_unload (arg, from_tty, 0, command); | |
7882 | } | |
7883 | ||
fa3064dd YQ |
7884 | DEF_VEC_I(int); |
7885 | ||
be5c67c1 PA |
7886 | /* An instance of this type is used to represent a syscall catchpoint. |
7887 | It includes a "struct breakpoint" as a kind of base class; users | |
7888 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7889 | really of this type iff its ops pointer points to | |
7890 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
7891 | ||
7892 | struct syscall_catchpoint | |
7893 | { | |
7894 | /* The base class. */ | |
7895 | struct breakpoint base; | |
7896 | ||
7897 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
7898 | syscall has been specified for filtering, its value is NULL. | |
7899 | Otherwise, it holds a list of all syscalls to be caught. The | |
7900 | list elements are allocated with xmalloc. */ | |
7901 | VEC(int) *syscalls_to_be_caught; | |
7902 | }; | |
7903 | ||
7904 | /* Implement the "dtor" breakpoint_ops method for syscall | |
7905 | catchpoints. */ | |
7906 | ||
7907 | static void | |
7908 | dtor_catch_syscall (struct breakpoint *b) | |
7909 | { | |
7910 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
7911 | ||
7912 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 7913 | |
2060206e | 7914 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
7915 | } |
7916 | ||
fa3064dd YQ |
7917 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
7918 | ||
7919 | struct catch_syscall_inferior_data | |
7920 | { | |
7921 | /* We keep a count of the number of times the user has requested a | |
7922 | particular syscall to be tracked, and pass this information to the | |
7923 | target. This lets capable targets implement filtering directly. */ | |
7924 | ||
7925 | /* Number of times that "any" syscall is requested. */ | |
7926 | int any_syscall_count; | |
7927 | ||
7928 | /* Count of each system call. */ | |
7929 | VEC(int) *syscalls_counts; | |
7930 | ||
7931 | /* This counts all syscall catch requests, so we can readily determine | |
7932 | if any catching is necessary. */ | |
7933 | int total_syscalls_count; | |
7934 | }; | |
7935 | ||
7936 | static struct catch_syscall_inferior_data* | |
7937 | get_catch_syscall_inferior_data (struct inferior *inf) | |
7938 | { | |
7939 | struct catch_syscall_inferior_data *inf_data; | |
7940 | ||
7941 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
7942 | if (inf_data == NULL) | |
7943 | { | |
7944 | inf_data = XZALLOC (struct catch_syscall_inferior_data); | |
7945 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); | |
7946 | } | |
7947 | ||
7948 | return inf_data; | |
7949 | } | |
7950 | ||
7951 | static void | |
7952 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
7953 | { | |
7954 | xfree (arg); | |
7955 | } | |
7956 | ||
7957 | ||
a96d9b2e SDJ |
7958 | /* Implement the "insert" breakpoint_ops method for syscall |
7959 | catchpoints. */ | |
7960 | ||
77b06cd7 TJB |
7961 | static int |
7962 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 7963 | { |
be5c67c1 | 7964 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 7965 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
7966 | struct catch_syscall_inferior_data *inf_data |
7967 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 7968 | |
fa3064dd | 7969 | ++inf_data->total_syscalls_count; |
be5c67c1 | 7970 | if (!c->syscalls_to_be_caught) |
fa3064dd | 7971 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
7972 | else |
7973 | { | |
7974 | int i, iter; | |
cc59ec59 | 7975 | |
a96d9b2e | 7976 | for (i = 0; |
be5c67c1 | 7977 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
7978 | i++) |
7979 | { | |
7980 | int elem; | |
cc59ec59 | 7981 | |
fa3064dd | 7982 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 7983 | { |
fa3064dd | 7984 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
7985 | uintptr_t vec_addr_offset |
7986 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 7987 | uintptr_t vec_addr; |
fa3064dd YQ |
7988 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
7989 | vec_addr = ((uintptr_t) VEC_address (int, | |
7990 | inf_data->syscalls_counts) | |
7991 | + vec_addr_offset); | |
a96d9b2e SDJ |
7992 | memset ((void *) vec_addr, 0, |
7993 | (iter + 1 - old_size) * sizeof (int)); | |
7994 | } | |
fa3064dd YQ |
7995 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
7996 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
7997 | } |
7998 | } | |
7999 | ||
77b06cd7 | 8000 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
fa3064dd YQ |
8001 | inf_data->total_syscalls_count != 0, |
8002 | inf_data->any_syscall_count, | |
8003 | VEC_length (int, | |
8004 | inf_data->syscalls_counts), | |
8005 | VEC_address (int, | |
8006 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
8007 | } |
8008 | ||
8009 | /* Implement the "remove" breakpoint_ops method for syscall | |
8010 | catchpoints. */ | |
8011 | ||
8012 | static int | |
77b06cd7 | 8013 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 8014 | { |
be5c67c1 | 8015 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8016 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8017 | struct catch_syscall_inferior_data *inf_data |
8018 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8019 | |
fa3064dd | 8020 | --inf_data->total_syscalls_count; |
be5c67c1 | 8021 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8022 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
8023 | else |
8024 | { | |
8025 | int i, iter; | |
cc59ec59 | 8026 | |
a96d9b2e | 8027 | for (i = 0; |
be5c67c1 | 8028 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8029 | i++) |
8030 | { | |
8031 | int elem; | |
fa3064dd | 8032 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
8033 | /* Shouldn't happen. */ |
8034 | continue; | |
fa3064dd YQ |
8035 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8036 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
8037 | } |
8038 | } | |
8039 | ||
8040 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
fa3064dd YQ |
8041 | inf_data->total_syscalls_count != 0, |
8042 | inf_data->any_syscall_count, | |
8043 | VEC_length (int, | |
8044 | inf_data->syscalls_counts), | |
3e43a32a | 8045 | VEC_address (int, |
fa3064dd | 8046 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
8047 | } |
8048 | ||
8049 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
8050 | catchpoints. */ | |
8051 | ||
8052 | static int | |
f1310107 | 8053 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
8054 | struct address_space *aspace, CORE_ADDR bp_addr, |
8055 | const struct target_waitstatus *ws) | |
a96d9b2e | 8056 | { |
4a64f543 MS |
8057 | /* We must check if we are catching specific syscalls in this |
8058 | breakpoint. If we are, then we must guarantee that the called | |
8059 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 8060 | int syscall_number = 0; |
be5c67c1 PA |
8061 | const struct syscall_catchpoint *c |
8062 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 8063 | |
f90263c1 TT |
8064 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
8065 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
8066 | return 0; |
8067 | ||
f90263c1 TT |
8068 | syscall_number = ws->value.syscall_number; |
8069 | ||
a96d9b2e | 8070 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 8071 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8072 | { |
8073 | int i, iter; | |
cc59ec59 | 8074 | |
a96d9b2e | 8075 | for (i = 0; |
be5c67c1 | 8076 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8077 | i++) |
8078 | if (syscall_number == iter) | |
8079 | break; | |
8080 | /* Not the same. */ | |
8081 | if (!iter) | |
8082 | return 0; | |
8083 | } | |
8084 | ||
8085 | return 1; | |
8086 | } | |
8087 | ||
8088 | /* Implement the "print_it" breakpoint_ops method for syscall | |
8089 | catchpoints. */ | |
8090 | ||
8091 | static enum print_stop_action | |
348d480f | 8092 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 8093 | { |
36dfb11c | 8094 | struct ui_out *uiout = current_uiout; |
348d480f | 8095 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
8096 | /* These are needed because we want to know in which state a |
8097 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
8098 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
8099 | must print "called syscall" or "returned from syscall". */ | |
8100 | ptid_t ptid; | |
8101 | struct target_waitstatus last; | |
8102 | struct syscall s; | |
a96d9b2e SDJ |
8103 | |
8104 | get_last_target_status (&ptid, &last); | |
8105 | ||
8106 | get_syscall_by_number (last.value.syscall_number, &s); | |
8107 | ||
8108 | annotate_catchpoint (b->number); | |
8109 | ||
36dfb11c TT |
8110 | if (b->disposition == disp_del) |
8111 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 8112 | else |
36dfb11c TT |
8113 | ui_out_text (uiout, "\nCatchpoint "); |
8114 | if (ui_out_is_mi_like_p (uiout)) | |
8115 | { | |
8116 | ui_out_field_string (uiout, "reason", | |
8117 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
8118 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
8119 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
8120 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8121 | } | |
8122 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
8123 | |
8124 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
8125 | ui_out_text (uiout, " (call to syscall "); |
8126 | else | |
8127 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 8128 | |
36dfb11c TT |
8129 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
8130 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
8131 | if (s.name != NULL) | |
8132 | ui_out_field_string (uiout, "syscall-name", s.name); | |
8133 | ||
8134 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
8135 | |
8136 | return PRINT_SRC_AND_LOC; | |
8137 | } | |
8138 | ||
8139 | /* Implement the "print_one" breakpoint_ops method for syscall | |
8140 | catchpoints. */ | |
8141 | ||
8142 | static void | |
8143 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 8144 | struct bp_location **last_loc) |
a96d9b2e | 8145 | { |
be5c67c1 | 8146 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 8147 | struct value_print_options opts; |
79a45e25 | 8148 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
8149 | |
8150 | get_user_print_options (&opts); | |
4a64f543 MS |
8151 | /* Field 4, the address, is omitted (which makes the columns not |
8152 | line up too nicely with the headers, but the effect is relatively | |
8153 | readable). */ | |
a96d9b2e SDJ |
8154 | if (opts.addressprint) |
8155 | ui_out_field_skip (uiout, "addr"); | |
8156 | annotate_field (5); | |
8157 | ||
be5c67c1 PA |
8158 | if (c->syscalls_to_be_caught |
8159 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
8160 | ui_out_text (uiout, "syscalls \""); |
8161 | else | |
8162 | ui_out_text (uiout, "syscall \""); | |
8163 | ||
be5c67c1 | 8164 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8165 | { |
8166 | int i, iter; | |
8167 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 8168 | |
a96d9b2e | 8169 | for (i = 0; |
be5c67c1 | 8170 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8171 | i++) |
8172 | { | |
8173 | char *x = text; | |
8174 | struct syscall s; | |
8175 | get_syscall_by_number (iter, &s); | |
8176 | ||
8177 | if (s.name != NULL) | |
8178 | text = xstrprintf ("%s%s, ", text, s.name); | |
8179 | else | |
8180 | text = xstrprintf ("%s%d, ", text, iter); | |
8181 | ||
8182 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 8183 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
8184 | on every call. */ |
8185 | xfree (x); | |
8186 | } | |
8187 | /* Remove the last comma. */ | |
8188 | text[strlen (text) - 2] = '\0'; | |
8189 | ui_out_field_string (uiout, "what", text); | |
8190 | } | |
8191 | else | |
8192 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
8193 | ui_out_text (uiout, "\" "); | |
8194 | } | |
8195 | ||
8196 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
8197 | catchpoints. */ | |
8198 | ||
8199 | static void | |
8200 | print_mention_catch_syscall (struct breakpoint *b) | |
8201 | { | |
be5c67c1 PA |
8202 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8203 | ||
8204 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
8205 | { |
8206 | int i, iter; | |
8207 | ||
be5c67c1 | 8208 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
8209 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
8210 | else | |
8211 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
8212 | ||
8213 | for (i = 0; | |
be5c67c1 | 8214 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8215 | i++) |
8216 | { | |
8217 | struct syscall s; | |
8218 | get_syscall_by_number (iter, &s); | |
8219 | ||
8220 | if (s.name) | |
8221 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
8222 | else | |
8223 | printf_filtered (" %d", s.number); | |
8224 | } | |
8225 | printf_filtered (")"); | |
8226 | } | |
8227 | else | |
8228 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
8229 | b->number); | |
8230 | } | |
8231 | ||
6149aea9 PA |
8232 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
8233 | catchpoints. */ | |
8234 | ||
8235 | static void | |
8236 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
8237 | { | |
be5c67c1 PA |
8238 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8239 | ||
6149aea9 PA |
8240 | fprintf_unfiltered (fp, "catch syscall"); |
8241 | ||
be5c67c1 | 8242 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
8243 | { |
8244 | int i, iter; | |
8245 | ||
8246 | for (i = 0; | |
be5c67c1 | 8247 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
8248 | i++) |
8249 | { | |
8250 | struct syscall s; | |
8251 | ||
8252 | get_syscall_by_number (iter, &s); | |
8253 | if (s.name) | |
8254 | fprintf_unfiltered (fp, " %s", s.name); | |
8255 | else | |
8256 | fprintf_unfiltered (fp, " %d", s.number); | |
8257 | } | |
8258 | } | |
d9b3f62e | 8259 | print_recreate_thread (b, fp); |
6149aea9 PA |
8260 | } |
8261 | ||
a96d9b2e SDJ |
8262 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
8263 | ||
2060206e | 8264 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
8265 | |
8266 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
8267 | ||
8268 | static int | |
8269 | syscall_catchpoint_p (struct breakpoint *b) | |
8270 | { | |
8271 | return (b->ops == &catch_syscall_breakpoint_ops); | |
8272 | } | |
8273 | ||
346774a9 PA |
8274 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8275 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8276 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8277 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8278 | |
346774a9 PA |
8279 | static void |
8280 | init_catchpoint (struct breakpoint *b, | |
8281 | struct gdbarch *gdbarch, int tempflag, | |
8282 | char *cond_string, | |
c0a91b2b | 8283 | const struct breakpoint_ops *ops) |
c906108c | 8284 | { |
c5aa993b | 8285 | struct symtab_and_line sal; |
346774a9 | 8286 | |
fe39c653 | 8287 | init_sal (&sal); |
6c95b8df | 8288 | sal.pspace = current_program_space; |
c5aa993b | 8289 | |
28010a5d | 8290 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8291 | |
1b36a34b | 8292 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8293 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8294 | } |
8295 | ||
28010a5d | 8296 | void |
3ea46bff | 8297 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8298 | { |
8299 | add_to_breakpoint_chain (b); | |
3a5c3e22 PA |
8300 | set_breakpoint_number (internal, b); |
8301 | if (!internal) | |
8302 | mention (b); | |
c56053d2 | 8303 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8304 | |
8305 | if (update_gll) | |
8306 | update_global_location_list (1); | |
c56053d2 PA |
8307 | } |
8308 | ||
9b70b993 | 8309 | static void |
a6d9a66e UW |
8310 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8311 | int tempflag, char *cond_string, | |
c0a91b2b | 8312 | const struct breakpoint_ops *ops) |
c906108c | 8313 | { |
e29a4733 | 8314 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8315 | |
e29a4733 PA |
8316 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8317 | ||
8318 | c->forked_inferior_pid = null_ptid; | |
8319 | ||
3ea46bff | 8320 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8321 | } |
8322 | ||
fe798b75 JB |
8323 | /* Exec catchpoints. */ |
8324 | ||
b4d90040 PA |
8325 | /* An instance of this type is used to represent an exec catchpoint. |
8326 | It includes a "struct breakpoint" as a kind of base class; users | |
8327 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8328 | really of this type iff its ops pointer points to | |
8329 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8330 | ||
8331 | struct exec_catchpoint | |
8332 | { | |
8333 | /* The base class. */ | |
8334 | struct breakpoint base; | |
8335 | ||
8336 | /* Filename of a program whose exec triggered this catchpoint. | |
8337 | This field is only valid immediately after this catchpoint has | |
8338 | triggered. */ | |
8339 | char *exec_pathname; | |
8340 | }; | |
8341 | ||
8342 | /* Implement the "dtor" breakpoint_ops method for exec | |
8343 | catchpoints. */ | |
8344 | ||
8345 | static void | |
8346 | dtor_catch_exec (struct breakpoint *b) | |
8347 | { | |
8348 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8349 | ||
8350 | xfree (c->exec_pathname); | |
348d480f | 8351 | |
2060206e | 8352 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8353 | } |
8354 | ||
77b06cd7 TJB |
8355 | static int |
8356 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8357 | { |
77b06cd7 | 8358 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 8359 | } |
c906108c | 8360 | |
fe798b75 | 8361 | static int |
77b06cd7 | 8362 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
8363 | { |
8364 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
8365 | } | |
c906108c | 8366 | |
fe798b75 | 8367 | static int |
f1310107 | 8368 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8369 | struct address_space *aspace, CORE_ADDR bp_addr, |
8370 | const struct target_waitstatus *ws) | |
fe798b75 | 8371 | { |
b4d90040 PA |
8372 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8373 | ||
f90263c1 TT |
8374 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8375 | return 0; | |
8376 | ||
8377 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8378 | return 1; | |
fe798b75 | 8379 | } |
c906108c | 8380 | |
fe798b75 | 8381 | static enum print_stop_action |
348d480f | 8382 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8383 | { |
36dfb11c | 8384 | struct ui_out *uiout = current_uiout; |
348d480f | 8385 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8386 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8387 | ||
fe798b75 | 8388 | annotate_catchpoint (b->number); |
36dfb11c TT |
8389 | if (b->disposition == disp_del) |
8390 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8391 | else | |
8392 | ui_out_text (uiout, "\nCatchpoint "); | |
8393 | if (ui_out_is_mi_like_p (uiout)) | |
8394 | { | |
8395 | ui_out_field_string (uiout, "reason", | |
8396 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8397 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8398 | } | |
8399 | ui_out_field_int (uiout, "bkptno", b->number); | |
8400 | ui_out_text (uiout, " (exec'd "); | |
8401 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8402 | ui_out_text (uiout, "), "); | |
8403 | ||
fe798b75 | 8404 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8405 | } |
8406 | ||
fe798b75 | 8407 | static void |
a6d9a66e | 8408 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8409 | { |
b4d90040 | 8410 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8411 | struct value_print_options opts; |
79a45e25 | 8412 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8413 | |
8414 | get_user_print_options (&opts); | |
8415 | ||
8416 | /* Field 4, the address, is omitted (which makes the columns | |
8417 | not line up too nicely with the headers, but the effect | |
8418 | is relatively readable). */ | |
8419 | if (opts.addressprint) | |
8420 | ui_out_field_skip (uiout, "addr"); | |
8421 | annotate_field (5); | |
8422 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8423 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8424 | { |
8425 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8426 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8427 | ui_out_text (uiout, "\" "); |
8428 | } | |
8429 | } | |
8430 | ||
8431 | static void | |
8432 | print_mention_catch_exec (struct breakpoint *b) | |
8433 | { | |
8434 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8435 | } | |
8436 | ||
6149aea9 PA |
8437 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8438 | catchpoints. */ | |
8439 | ||
8440 | static void | |
8441 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8442 | { | |
8443 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8444 | print_recreate_thread (b, fp); |
6149aea9 PA |
8445 | } |
8446 | ||
2060206e | 8447 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8448 | |
a96d9b2e SDJ |
8449 | static void |
8450 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 8451 | const struct breakpoint_ops *ops) |
a96d9b2e | 8452 | { |
be5c67c1 | 8453 | struct syscall_catchpoint *c; |
a96d9b2e | 8454 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 8455 | |
be5c67c1 PA |
8456 | c = XNEW (struct syscall_catchpoint); |
8457 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
8458 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 8459 | |
3ea46bff | 8460 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
8461 | } |
8462 | ||
c906108c | 8463 | static int |
fba45db2 | 8464 | hw_breakpoint_used_count (void) |
c906108c | 8465 | { |
c906108c | 8466 | int i = 0; |
f1310107 TJB |
8467 | struct breakpoint *b; |
8468 | struct bp_location *bl; | |
c906108c SS |
8469 | |
8470 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8471 | { |
d6b74ac4 | 8472 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8473 | for (bl = b->loc; bl; bl = bl->next) |
8474 | { | |
8475 | /* Special types of hardware breakpoints may use more than | |
8476 | one register. */ | |
348d480f | 8477 | i += b->ops->resources_needed (bl); |
f1310107 | 8478 | } |
c5aa993b | 8479 | } |
c906108c SS |
8480 | |
8481 | return i; | |
8482 | } | |
8483 | ||
a1398e0c PA |
8484 | /* Returns the resources B would use if it were a hardware |
8485 | watchpoint. */ | |
8486 | ||
c906108c | 8487 | static int |
a1398e0c | 8488 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8489 | { |
c906108c | 8490 | int i = 0; |
e09342b5 | 8491 | struct bp_location *bl; |
c906108c | 8492 | |
a1398e0c PA |
8493 | if (!breakpoint_enabled (b)) |
8494 | return 0; | |
8495 | ||
8496 | for (bl = b->loc; bl; bl = bl->next) | |
8497 | { | |
8498 | /* Special types of hardware watchpoints may use more than | |
8499 | one register. */ | |
8500 | i += b->ops->resources_needed (bl); | |
8501 | } | |
8502 | ||
8503 | return i; | |
8504 | } | |
8505 | ||
8506 | /* Returns the sum the used resources of all hardware watchpoints of | |
8507 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8508 | the sum of the used resources of all hardware watchpoints of other | |
8509 | types _not_ TYPE. */ | |
8510 | ||
8511 | static int | |
8512 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8513 | enum bptype type, int *other_type_used) | |
8514 | { | |
8515 | int i = 0; | |
8516 | struct breakpoint *b; | |
8517 | ||
c906108c SS |
8518 | *other_type_used = 0; |
8519 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8520 | { |
a1398e0c PA |
8521 | if (b == except) |
8522 | continue; | |
e09342b5 TJB |
8523 | if (!breakpoint_enabled (b)) |
8524 | continue; | |
8525 | ||
a1398e0c PA |
8526 | if (b->type == type) |
8527 | i += hw_watchpoint_use_count (b); | |
8528 | else if (is_hardware_watchpoint (b)) | |
8529 | *other_type_used = 1; | |
e09342b5 TJB |
8530 | } |
8531 | ||
c906108c SS |
8532 | return i; |
8533 | } | |
8534 | ||
c906108c | 8535 | void |
fba45db2 | 8536 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8537 | { |
c5aa993b | 8538 | struct breakpoint *b; |
c906108c SS |
8539 | |
8540 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8541 | { |
cc60f2e3 | 8542 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8543 | { |
b5de0fa7 | 8544 | b->enable_state = bp_call_disabled; |
b60e7edf | 8545 | update_global_location_list (0); |
c5aa993b JM |
8546 | } |
8547 | } | |
c906108c SS |
8548 | } |
8549 | ||
8550 | void | |
fba45db2 | 8551 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8552 | { |
c5aa993b | 8553 | struct breakpoint *b; |
c906108c SS |
8554 | |
8555 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8556 | { |
cc60f2e3 | 8557 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8558 | { |
b5de0fa7 | 8559 | b->enable_state = bp_enabled; |
b60e7edf | 8560 | update_global_location_list (1); |
c5aa993b JM |
8561 | } |
8562 | } | |
c906108c SS |
8563 | } |
8564 | ||
8bea4e01 UW |
8565 | void |
8566 | disable_breakpoints_before_startup (void) | |
8567 | { | |
6c95b8df | 8568 | current_program_space->executing_startup = 1; |
f8eba3c6 | 8569 | update_global_location_list (0); |
8bea4e01 UW |
8570 | } |
8571 | ||
8572 | void | |
8573 | enable_breakpoints_after_startup (void) | |
8574 | { | |
6c95b8df | 8575 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8576 | breakpoint_re_set (); |
8bea4e01 UW |
8577 | } |
8578 | ||
c906108c SS |
8579 | |
8580 | /* Set a breakpoint that will evaporate an end of command | |
8581 | at address specified by SAL. | |
8582 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
8583 | ||
8584 | struct breakpoint * | |
a6d9a66e UW |
8585 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8586 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8587 | { |
52f0bd74 | 8588 | struct breakpoint *b; |
edb3359d DJ |
8589 | |
8590 | /* If FRAME_ID is valid, it should be a real frame, not an inlined | |
8591 | one. */ | |
8592 | gdb_assert (!frame_id_inlined_p (frame_id)); | |
8593 | ||
06edf0c0 | 8594 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8595 | b->enable_state = bp_enabled; |
8596 | b->disposition = disp_donttouch; | |
818dd999 | 8597 | b->frame_id = frame_id; |
c906108c | 8598 | |
4a64f543 MS |
8599 | /* If we're debugging a multi-threaded program, then we want |
8600 | momentary breakpoints to be active in only a single thread of | |
8601 | control. */ | |
39f77062 KB |
8602 | if (in_thread_list (inferior_ptid)) |
8603 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8604 | |
b60e7edf | 8605 | update_global_location_list_nothrow (1); |
74960c60 | 8606 | |
c906108c SS |
8607 | return b; |
8608 | } | |
611c83ae | 8609 | |
06edf0c0 PA |
8610 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
8611 | The new breakpoint will have type TYPE, and use OPS as it | |
8612 | breakpoint_ops. */ | |
e58b0e63 | 8613 | |
06edf0c0 PA |
8614 | static struct breakpoint * |
8615 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8616 | enum bptype type, | |
c0a91b2b | 8617 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
8618 | { |
8619 | struct breakpoint *copy; | |
8620 | ||
06edf0c0 | 8621 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8622 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8623 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8624 | |
a6d9a66e | 8625 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8626 | copy->loc->requested_address = orig->loc->requested_address; |
8627 | copy->loc->address = orig->loc->address; | |
8628 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8629 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8630 | copy->loc->probe = orig->loc->probe; |
e58b0e63 | 8631 | |
f8eba3c6 TT |
8632 | if (orig->loc->source_file != NULL) |
8633 | copy->loc->source_file = xstrdup (orig->loc->source_file); | |
e58b0e63 | 8634 | |
f8eba3c6 | 8635 | copy->loc->line_number = orig->loc->line_number; |
e58b0e63 PA |
8636 | copy->frame_id = orig->frame_id; |
8637 | copy->thread = orig->thread; | |
6c95b8df | 8638 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8639 | |
8640 | copy->enable_state = bp_enabled; | |
8641 | copy->disposition = disp_donttouch; | |
8642 | copy->number = internal_breakpoint_number--; | |
8643 | ||
8644 | update_global_location_list_nothrow (0); | |
8645 | return copy; | |
8646 | } | |
8647 | ||
06edf0c0 PA |
8648 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8649 | ORIG is NULL. */ | |
8650 | ||
8651 | struct breakpoint * | |
8652 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8653 | { | |
8654 | /* If there's nothing to clone, then return nothing. */ | |
8655 | if (orig == NULL) | |
8656 | return NULL; | |
8657 | ||
8658 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
8659 | } | |
8660 | ||
611c83ae | 8661 | struct breakpoint * |
a6d9a66e UW |
8662 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8663 | enum bptype type) | |
611c83ae PA |
8664 | { |
8665 | struct symtab_and_line sal; | |
8666 | ||
8667 | sal = find_pc_line (pc, 0); | |
8668 | sal.pc = pc; | |
8669 | sal.section = find_pc_overlay (pc); | |
8670 | sal.explicit_pc = 1; | |
8671 | ||
a6d9a66e | 8672 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8673 | } |
c906108c | 8674 | \f |
c5aa993b | 8675 | |
c906108c SS |
8676 | /* Tell the user we have just set a breakpoint B. */ |
8677 | ||
8678 | static void | |
fba45db2 | 8679 | mention (struct breakpoint *b) |
c906108c | 8680 | { |
348d480f | 8681 | b->ops->print_mention (b); |
79a45e25 | 8682 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8683 | return; |
c906108c SS |
8684 | printf_filtered ("\n"); |
8685 | } | |
c906108c | 8686 | \f |
c5aa993b | 8687 | |
0d381245 | 8688 | static struct bp_location * |
39d61571 | 8689 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8690 | const struct symtab_and_line *sal) |
8691 | { | |
8692 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8693 | CORE_ADDR adjusted_address; |
8694 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8695 | ||
8696 | if (loc_gdbarch == NULL) | |
8697 | loc_gdbarch = b->gdbarch; | |
8698 | ||
8699 | /* Adjust the breakpoint's address prior to allocating a location. | |
8700 | Once we call allocate_bp_location(), that mostly uninitialized | |
8701 | location will be placed on the location chain. Adjustment of the | |
8702 | breakpoint may cause target_read_memory() to be called and we do | |
8703 | not want its scan of the location chain to find a breakpoint and | |
8704 | location that's only been partially initialized. */ | |
8705 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8706 | sal->pc, b->type); | |
0d381245 | 8707 | |
39d61571 | 8708 | loc = allocate_bp_location (b); |
0d381245 VP |
8709 | for (tmp = &(b->loc); *tmp != NULL; tmp = &((*tmp)->next)) |
8710 | ; | |
8711 | *tmp = loc; | |
3742cc8b | 8712 | |
0d381245 | 8713 | loc->requested_address = sal->pc; |
3742cc8b | 8714 | loc->address = adjusted_address; |
6c95b8df | 8715 | loc->pspace = sal->pspace; |
55aa24fb | 8716 | loc->probe = sal->probe; |
6c95b8df | 8717 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8718 | loc->section = sal->section; |
3742cc8b | 8719 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 TT |
8720 | |
8721 | if (sal->symtab != NULL) | |
8722 | loc->source_file = xstrdup (sal->symtab->filename); | |
8723 | loc->line_number = sal->line; | |
8724 | ||
0e30163f JK |
8725 | set_breakpoint_location_function (loc, |
8726 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
8727 | return loc; |
8728 | } | |
514f746b AR |
8729 | \f |
8730 | ||
8731 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8732 | return 0 otherwise. */ | |
8733 | ||
8734 | static int | |
8735 | bp_loc_is_permanent (struct bp_location *loc) | |
8736 | { | |
8737 | int len; | |
8738 | CORE_ADDR addr; | |
1afeeb75 | 8739 | const gdb_byte *bpoint; |
514f746b | 8740 | gdb_byte *target_mem; |
939c61fa JK |
8741 | struct cleanup *cleanup; |
8742 | int retval = 0; | |
514f746b AR |
8743 | |
8744 | gdb_assert (loc != NULL); | |
8745 | ||
8746 | addr = loc->address; | |
1afeeb75 | 8747 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 8748 | |
939c61fa | 8749 | /* Software breakpoints unsupported? */ |
1afeeb75 | 8750 | if (bpoint == NULL) |
939c61fa JK |
8751 | return 0; |
8752 | ||
514f746b AR |
8753 | target_mem = alloca (len); |
8754 | ||
939c61fa JK |
8755 | /* Enable the automatic memory restoration from breakpoints while |
8756 | we read the memory. Otherwise we could say about our temporary | |
8757 | breakpoints they are permanent. */ | |
6c95b8df PA |
8758 | cleanup = save_current_space_and_thread (); |
8759 | ||
8760 | switch_to_program_space_and_thread (loc->pspace); | |
8761 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 8762 | |
514f746b | 8763 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 8764 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 8765 | retval = 1; |
514f746b | 8766 | |
939c61fa JK |
8767 | do_cleanups (cleanup); |
8768 | ||
8769 | return retval; | |
514f746b AR |
8770 | } |
8771 | ||
e7e0cddf SS |
8772 | /* Build a command list for the dprintf corresponding to the current |
8773 | settings of the dprintf style options. */ | |
8774 | ||
8775 | static void | |
8776 | update_dprintf_command_list (struct breakpoint *b) | |
8777 | { | |
8778 | char *dprintf_args = b->extra_string; | |
8779 | char *printf_line = NULL; | |
8780 | ||
8781 | if (!dprintf_args) | |
8782 | return; | |
8783 | ||
8784 | dprintf_args = skip_spaces (dprintf_args); | |
8785 | ||
8786 | /* Allow a comma, as it may have terminated a location, but don't | |
8787 | insist on it. */ | |
8788 | if (*dprintf_args == ',') | |
8789 | ++dprintf_args; | |
8790 | dprintf_args = skip_spaces (dprintf_args); | |
8791 | ||
8792 | if (*dprintf_args != '"') | |
8793 | error (_("Bad format string, missing '\"'.")); | |
8794 | ||
d3ce09f5 | 8795 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8796 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8797 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8798 | { |
8799 | if (!dprintf_function) | |
8800 | error (_("No function supplied for dprintf call")); | |
8801 | ||
8802 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8803 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8804 | dprintf_function, | |
8805 | dprintf_channel, | |
8806 | dprintf_args); | |
8807 | else | |
8808 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8809 | dprintf_function, | |
8810 | dprintf_args); | |
8811 | } | |
d3ce09f5 SS |
8812 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8813 | { | |
8814 | if (target_can_run_breakpoint_commands ()) | |
8815 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8816 | else | |
8817 | { | |
8818 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8819 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8820 | } | |
8821 | } | |
e7e0cddf SS |
8822 | else |
8823 | internal_error (__FILE__, __LINE__, | |
8824 | _("Invalid dprintf style.")); | |
8825 | ||
8826 | /* Manufacture a printf/continue sequence. */ | |
8827 | if (printf_line) | |
8828 | { | |
8829 | struct command_line *printf_cmd_line, *cont_cmd_line = NULL; | |
8830 | ||
d3ce09f5 SS |
8831 | if (strcmp (dprintf_style, dprintf_style_agent) != 0) |
8832 | { | |
8833 | cont_cmd_line = xmalloc (sizeof (struct command_line)); | |
8834 | cont_cmd_line->control_type = simple_control; | |
8835 | cont_cmd_line->body_count = 0; | |
8836 | cont_cmd_line->body_list = NULL; | |
8837 | cont_cmd_line->next = NULL; | |
8838 | cont_cmd_line->line = xstrdup ("continue"); | |
8839 | } | |
e7e0cddf SS |
8840 | |
8841 | printf_cmd_line = xmalloc (sizeof (struct command_line)); | |
8842 | printf_cmd_line->control_type = simple_control; | |
8843 | printf_cmd_line->body_count = 0; | |
8844 | printf_cmd_line->body_list = NULL; | |
8845 | printf_cmd_line->next = cont_cmd_line; | |
8846 | printf_cmd_line->line = printf_line; | |
8847 | ||
8848 | breakpoint_set_commands (b, printf_cmd_line); | |
8849 | } | |
8850 | } | |
8851 | ||
8852 | /* Update all dprintf commands, making their command lists reflect | |
8853 | current style settings. */ | |
8854 | ||
8855 | static void | |
8856 | update_dprintf_commands (char *args, int from_tty, | |
8857 | struct cmd_list_element *c) | |
8858 | { | |
8859 | struct breakpoint *b; | |
8860 | ||
8861 | ALL_BREAKPOINTS (b) | |
8862 | { | |
8863 | if (b->type == bp_dprintf) | |
8864 | update_dprintf_command_list (b); | |
8865 | } | |
8866 | } | |
c3f6f71d | 8867 | |
018d34a4 VP |
8868 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
8869 | as textual description of the location, and COND_STRING | |
db107f19 | 8870 | as condition expression. */ |
018d34a4 VP |
8871 | |
8872 | static void | |
d9b3f62e PA |
8873 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
8874 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8875 | char *filter, char *cond_string, |
e7e0cddf | 8876 | char *extra_string, |
d9b3f62e PA |
8877 | enum bptype type, enum bpdisp disposition, |
8878 | int thread, int task, int ignore_count, | |
c0a91b2b | 8879 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
8880 | int enabled, int internal, unsigned flags, |
8881 | int display_canonical) | |
018d34a4 | 8882 | { |
0d381245 | 8883 | int i; |
018d34a4 VP |
8884 | |
8885 | if (type == bp_hardware_breakpoint) | |
8886 | { | |
fbbd034e AS |
8887 | int target_resources_ok; |
8888 | ||
8889 | i = hw_breakpoint_used_count (); | |
8890 | target_resources_ok = | |
8891 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
8892 | i + 1, 0); |
8893 | if (target_resources_ok == 0) | |
8894 | error (_("No hardware breakpoint support in the target.")); | |
8895 | else if (target_resources_ok < 0) | |
8896 | error (_("Hardware breakpoints used exceeds limit.")); | |
8897 | } | |
8898 | ||
6c95b8df PA |
8899 | gdb_assert (sals.nelts > 0); |
8900 | ||
0d381245 VP |
8901 | for (i = 0; i < sals.nelts; ++i) |
8902 | { | |
8903 | struct symtab_and_line sal = sals.sals[i]; | |
8904 | struct bp_location *loc; | |
8905 | ||
8906 | if (from_tty) | |
5af949e3 UW |
8907 | { |
8908 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
8909 | if (!loc_gdbarch) | |
8910 | loc_gdbarch = gdbarch; | |
8911 | ||
8912 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 8913 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 8914 | } |
0d381245 VP |
8915 | |
8916 | if (i == 0) | |
8917 | { | |
d9b3f62e | 8918 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 8919 | b->thread = thread; |
4a306c9a | 8920 | b->task = task; |
855a6e68 | 8921 | |
0d381245 | 8922 | b->cond_string = cond_string; |
e7e0cddf | 8923 | b->extra_string = extra_string; |
0d381245 | 8924 | b->ignore_count = ignore_count; |
41447f92 | 8925 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 8926 | b->disposition = disposition; |
6c95b8df | 8927 | |
44f238bb PA |
8928 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8929 | b->loc->inserted = 1; | |
8930 | ||
0fb4aa4b PA |
8931 | if (type == bp_static_tracepoint) |
8932 | { | |
d9b3f62e | 8933 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
8934 | struct static_tracepoint_marker marker; |
8935 | ||
983af33b | 8936 | if (strace_marker_p (b)) |
0fb4aa4b PA |
8937 | { |
8938 | /* We already know the marker exists, otherwise, we | |
8939 | wouldn't see a sal for it. */ | |
8940 | char *p = &addr_string[3]; | |
8941 | char *endp; | |
8942 | char *marker_str; | |
0fb4aa4b | 8943 | |
e9cafbcc | 8944 | p = skip_spaces (p); |
0fb4aa4b | 8945 | |
e9cafbcc | 8946 | endp = skip_to_space (p); |
0fb4aa4b PA |
8947 | |
8948 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 8949 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 8950 | |
3e43a32a MS |
8951 | printf_filtered (_("Probed static tracepoint " |
8952 | "marker \"%s\"\n"), | |
d9b3f62e | 8953 | t->static_trace_marker_id); |
0fb4aa4b PA |
8954 | } |
8955 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
8956 | { | |
d9b3f62e | 8957 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
8958 | release_static_tracepoint_marker (&marker); |
8959 | ||
3e43a32a MS |
8960 | printf_filtered (_("Probed static tracepoint " |
8961 | "marker \"%s\"\n"), | |
d9b3f62e | 8962 | t->static_trace_marker_id); |
0fb4aa4b PA |
8963 | } |
8964 | else | |
3e43a32a MS |
8965 | warning (_("Couldn't determine the static " |
8966 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
8967 | } |
8968 | ||
0d381245 VP |
8969 | loc = b->loc; |
8970 | } | |
8971 | else | |
018d34a4 | 8972 | { |
39d61571 | 8973 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
8974 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
8975 | loc->inserted = 1; | |
0d381245 VP |
8976 | } |
8977 | ||
514f746b AR |
8978 | if (bp_loc_is_permanent (loc)) |
8979 | make_breakpoint_permanent (b); | |
8980 | ||
0d381245 VP |
8981 | if (b->cond_string) |
8982 | { | |
8983 | char *arg = b->cond_string; | |
1bb9788d TT |
8984 | loc->cond = parse_exp_1 (&arg, loc->address, |
8985 | block_for_pc (loc->address), 0); | |
0d381245 | 8986 | if (*arg) |
588ae58c | 8987 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 8988 | } |
e7e0cddf SS |
8989 | |
8990 | /* Dynamic printf requires and uses additional arguments on the | |
8991 | command line, otherwise it's an error. */ | |
8992 | if (type == bp_dprintf) | |
8993 | { | |
8994 | if (b->extra_string) | |
8995 | update_dprintf_command_list (b); | |
8996 | else | |
8997 | error (_("Format string required")); | |
8998 | } | |
8999 | else if (b->extra_string) | |
588ae58c | 9000 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9001 | } |
018d34a4 | 9002 | |
56435ebe | 9003 | b->display_canonical = display_canonical; |
018d34a4 VP |
9004 | if (addr_string) |
9005 | b->addr_string = addr_string; | |
9006 | else | |
9007 | /* addr_string has to be used or breakpoint_re_set will delete | |
9008 | me. */ | |
5af949e3 UW |
9009 | b->addr_string |
9010 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 9011 | b->filter = filter; |
d9b3f62e | 9012 | } |
018d34a4 | 9013 | |
d9b3f62e PA |
9014 | static void |
9015 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
9016 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9017 | char *filter, char *cond_string, |
e7e0cddf | 9018 | char *extra_string, |
d9b3f62e PA |
9019 | enum bptype type, enum bpdisp disposition, |
9020 | int thread, int task, int ignore_count, | |
c0a91b2b | 9021 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9022 | int enabled, int internal, unsigned flags, |
9023 | int display_canonical) | |
d9b3f62e PA |
9024 | { |
9025 | struct breakpoint *b; | |
9026 | struct cleanup *old_chain; | |
9027 | ||
9028 | if (is_tracepoint_type (type)) | |
9029 | { | |
9030 | struct tracepoint *t; | |
9031 | ||
9032 | t = XCNEW (struct tracepoint); | |
9033 | b = &t->base; | |
9034 | } | |
9035 | else | |
9036 | b = XNEW (struct breakpoint); | |
9037 | ||
9038 | old_chain = make_cleanup (xfree, b); | |
9039 | ||
9040 | init_breakpoint_sal (b, gdbarch, | |
9041 | sals, addr_string, | |
e7e0cddf | 9042 | filter, cond_string, extra_string, |
d9b3f62e PA |
9043 | type, disposition, |
9044 | thread, task, ignore_count, | |
9045 | ops, from_tty, | |
44f238bb PA |
9046 | enabled, internal, flags, |
9047 | display_canonical); | |
d9b3f62e PA |
9048 | discard_cleanups (old_chain); |
9049 | ||
3ea46bff | 9050 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9051 | } |
9052 | ||
9053 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9054 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9055 | value. COND_STRING, if not NULL, specified the condition to be | |
9056 | used for all breakpoints. Essentially the only case where | |
9057 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9058 | function. In that case, it's still not possible to specify | |
9059 | separate conditions for different overloaded functions, so | |
9060 | we take just a single condition string. | |
9061 | ||
c3f6f71d | 9062 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9063 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9064 | array contents). If the function fails (error() is called), the |
9065 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9066 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9067 | |
9068 | static void | |
8cdf0e15 | 9069 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9070 | struct linespec_result *canonical, |
e7e0cddf | 9071 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9072 | enum bptype type, enum bpdisp disposition, |
9073 | int thread, int task, int ignore_count, | |
c0a91b2b | 9074 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9075 | int enabled, int internal, unsigned flags) |
c906108c | 9076 | { |
018d34a4 | 9077 | int i; |
f8eba3c6 | 9078 | struct linespec_sals *lsal; |
cc59ec59 | 9079 | |
f8eba3c6 TT |
9080 | if (canonical->pre_expanded) |
9081 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9082 | ||
9083 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9084 | { |
f8eba3c6 TT |
9085 | /* Note that 'addr_string' can be NULL in the case of a plain |
9086 | 'break', without arguments. */ | |
9087 | char *addr_string = (canonical->addr_string | |
9088 | ? xstrdup (canonical->addr_string) | |
9089 | : NULL); | |
9090 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
9091 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 9092 | |
f8eba3c6 TT |
9093 | make_cleanup (xfree, filter_string); |
9094 | create_breakpoint_sal (gdbarch, lsal->sals, | |
9095 | addr_string, | |
9096 | filter_string, | |
e7e0cddf SS |
9097 | cond_string, extra_string, |
9098 | type, disposition, | |
84f4c1fe | 9099 | thread, task, ignore_count, ops, |
44f238bb | 9100 | from_tty, enabled, internal, flags, |
56435ebe | 9101 | canonical->special_display); |
f8eba3c6 | 9102 | discard_cleanups (inner); |
c3f6f71d | 9103 | } |
c3f6f71d | 9104 | } |
c906108c | 9105 | |
9998af43 | 9106 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 9107 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 9108 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
9109 | address strings. ADDRESS points to the end of the SAL. |
9110 | ||
9111 | The array and the line spec strings are allocated on the heap, it is | |
9112 | the caller's responsibility to free them. */ | |
c906108c | 9113 | |
b9362cc7 | 9114 | static void |
c3f6f71d | 9115 | parse_breakpoint_sals (char **address, |
58438ac1 | 9116 | struct linespec_result *canonical) |
c3f6f71d JM |
9117 | { |
9118 | char *addr_start = *address; | |
cc59ec59 | 9119 | |
c3f6f71d | 9120 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 9121 | breakpoint. */ |
c3f6f71d JM |
9122 | if ((*address) == NULL |
9123 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 9124 | { |
1bfeeb0f JL |
9125 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
9126 | address. */ | |
9127 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9128 | { |
f8eba3c6 | 9129 | struct linespec_sals lsal; |
c3f6f71d | 9130 | struct symtab_and_line sal; |
cc59ec59 | 9131 | |
4a64f543 | 9132 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 9133 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 9134 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
9135 | |
9136 | /* Set sal's pspace, pc, symtab, and line to the values | |
9137 | corresponding to the last call to print_frame_info. */ | |
9138 | get_last_displayed_sal (&sal); | |
9139 | sal.section = find_pc_overlay (sal.pc); | |
00903456 | 9140 | |
4a64f543 | 9141 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
9142 | where PC is the last displayed codepoint's address. So |
9143 | make sure to set sal.explicit_pc to prevent GDB from | |
9144 | trying to expand the list of sals to include all other | |
9145 | instances with the same symtab and line. */ | |
00903456 JK |
9146 | sal.explicit_pc = 1; |
9147 | ||
f8eba3c6 TT |
9148 | lsal.sals.sals[0] = sal; |
9149 | lsal.sals.nelts = 1; | |
9150 | lsal.canonical = NULL; | |
9151 | ||
9152 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
9153 | } |
9154 | else | |
8a3fe4f8 | 9155 | error (_("No default breakpoint address now.")); |
c906108c SS |
9156 | } |
9157 | else | |
9158 | { | |
cc80f267 JK |
9159 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
9160 | ||
c906108c | 9161 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
9162 | current_source_symtab (which is decode_line_1's default). |
9163 | This should produce the results we want almost all of the | |
cc80f267 JK |
9164 | time while leaving default_breakpoint_* alone. |
9165 | ||
9166 | ObjC: However, don't match an Objective-C method name which | |
9167 | may have a '+' or '-' succeeded by a '['. */ | |
9168 | if (last_displayed_sal_is_valid () | |
9169 | && (!cursal.symtab | |
9170 | || ((strchr ("+-", (*address)[0]) != NULL) | |
9171 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
9172 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
9173 | get_last_displayed_symtab (), | |
9174 | get_last_displayed_line (), | |
9175 | canonical, NULL, NULL); | |
c906108c | 9176 | else |
f8eba3c6 | 9177 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 9178 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 9179 | } |
c3f6f71d | 9180 | } |
c906108c | 9181 | |
c906108c | 9182 | |
c3f6f71d | 9183 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9184 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9185 | |
b9362cc7 | 9186 | static void |
23e7acfb | 9187 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9188 | { |
9189 | int i; | |
cc59ec59 | 9190 | |
c3f6f71d | 9191 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9192 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9193 | } |
9194 | ||
7a697b8d SS |
9195 | /* Fast tracepoints may have restrictions on valid locations. For |
9196 | instance, a fast tracepoint using a jump instead of a trap will | |
9197 | likely have to overwrite more bytes than a trap would, and so can | |
9198 | only be placed where the instruction is longer than the jump, or a | |
9199 | multi-instruction sequence does not have a jump into the middle of | |
9200 | it, etc. */ | |
9201 | ||
9202 | static void | |
9203 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9204 | struct symtabs_and_lines *sals) | |
9205 | { | |
9206 | int i, rslt; | |
9207 | struct symtab_and_line *sal; | |
9208 | char *msg; | |
9209 | struct cleanup *old_chain; | |
9210 | ||
9211 | for (i = 0; i < sals->nelts; i++) | |
9212 | { | |
f8eba3c6 TT |
9213 | struct gdbarch *sarch; |
9214 | ||
7a697b8d SS |
9215 | sal = &sals->sals[i]; |
9216 | ||
f8eba3c6 TT |
9217 | sarch = get_sal_arch (*sal); |
9218 | /* We fall back to GDBARCH if there is no architecture | |
9219 | associated with SAL. */ | |
9220 | if (sarch == NULL) | |
9221 | sarch = gdbarch; | |
9222 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9223 | NULL, &msg); |
9224 | old_chain = make_cleanup (xfree, msg); | |
9225 | ||
9226 | if (!rslt) | |
9227 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9228 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9229 | |
9230 | do_cleanups (old_chain); | |
9231 | } | |
9232 | } | |
9233 | ||
af4908ba KS |
9234 | /* Issue an invalid thread ID error. */ |
9235 | ||
9236 | static void ATTRIBUTE_NORETURN | |
9237 | invalid_thread_id_error (int id) | |
9238 | { | |
9239 | error (_("Unknown thread %d."), id); | |
9240 | } | |
9241 | ||
018d34a4 VP |
9242 | /* Given TOK, a string specification of condition and thread, as |
9243 | accepted by the 'break' command, extract the condition | |
9244 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9245 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9246 | If no condition is found, *COND_STRING is set to NULL. |
9247 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9248 | |
9249 | static void | |
9250 | find_condition_and_thread (char *tok, CORE_ADDR pc, | |
e7e0cddf SS |
9251 | char **cond_string, int *thread, int *task, |
9252 | char **rest) | |
018d34a4 VP |
9253 | { |
9254 | *cond_string = NULL; | |
9255 | *thread = -1; | |
ed1d1739 KS |
9256 | *task = 0; |
9257 | *rest = NULL; | |
9258 | ||
018d34a4 VP |
9259 | while (tok && *tok) |
9260 | { | |
9261 | char *end_tok; | |
9262 | int toklen; | |
9263 | char *cond_start = NULL; | |
9264 | char *cond_end = NULL; | |
cc59ec59 | 9265 | |
e9cafbcc | 9266 | tok = skip_spaces (tok); |
e7e0cddf SS |
9267 | |
9268 | if ((*tok == '"' || *tok == ',') && rest) | |
9269 | { | |
9270 | *rest = savestring (tok, strlen (tok)); | |
9271 | return; | |
9272 | } | |
9273 | ||
e9cafbcc | 9274 | end_tok = skip_to_space (tok); |
d634f2de | 9275 | |
018d34a4 | 9276 | toklen = end_tok - tok; |
d634f2de | 9277 | |
018d34a4 VP |
9278 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9279 | { | |
f7545552 TT |
9280 | struct expression *expr; |
9281 | ||
018d34a4 | 9282 | tok = cond_start = end_tok + 1; |
1bb9788d | 9283 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9284 | xfree (expr); |
018d34a4 | 9285 | cond_end = tok; |
d634f2de | 9286 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9287 | } |
9288 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9289 | { | |
9290 | char *tmptok; | |
d634f2de | 9291 | |
018d34a4 VP |
9292 | tok = end_tok + 1; |
9293 | tmptok = tok; | |
9294 | *thread = strtol (tok, &tok, 0); | |
9295 | if (tok == tmptok) | |
9296 | error (_("Junk after thread keyword.")); | |
9297 | if (!valid_thread_id (*thread)) | |
af4908ba | 9298 | invalid_thread_id_error (*thread); |
018d34a4 | 9299 | } |
4a306c9a JB |
9300 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9301 | { | |
9302 | char *tmptok; | |
9303 | ||
9304 | tok = end_tok + 1; | |
9305 | tmptok = tok; | |
9306 | *task = strtol (tok, &tok, 0); | |
9307 | if (tok == tmptok) | |
9308 | error (_("Junk after task keyword.")); | |
9309 | if (!valid_task_id (*task)) | |
b6199126 | 9310 | error (_("Unknown task %d."), *task); |
4a306c9a | 9311 | } |
e7e0cddf SS |
9312 | else if (rest) |
9313 | { | |
9314 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9315 | return; |
e7e0cddf | 9316 | } |
018d34a4 VP |
9317 | else |
9318 | error (_("Junk at end of arguments.")); | |
9319 | } | |
9320 | } | |
9321 | ||
0fb4aa4b PA |
9322 | /* Decode a static tracepoint marker spec. */ |
9323 | ||
9324 | static struct symtabs_and_lines | |
9325 | decode_static_tracepoint_spec (char **arg_p) | |
9326 | { | |
9327 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9328 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9329 | struct cleanup *old_chain; |
9330 | char *p = &(*arg_p)[3]; | |
9331 | char *endp; | |
9332 | char *marker_str; | |
9333 | int i; | |
9334 | ||
e9cafbcc | 9335 | p = skip_spaces (p); |
0fb4aa4b | 9336 | |
e9cafbcc | 9337 | endp = skip_to_space (p); |
0fb4aa4b PA |
9338 | |
9339 | marker_str = savestring (p, endp - p); | |
9340 | old_chain = make_cleanup (xfree, marker_str); | |
9341 | ||
9342 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9343 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9344 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9345 | ||
9346 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9347 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9348 | ||
9349 | for (i = 0; i < sals.nelts; i++) | |
9350 | { | |
9351 | struct static_tracepoint_marker *marker; | |
9352 | ||
9353 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9354 | ||
9355 | init_sal (&sals.sals[i]); | |
9356 | ||
9357 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9358 | sals.sals[i].pc = marker->address; | |
9359 | ||
9360 | release_static_tracepoint_marker (marker); | |
9361 | } | |
9362 | ||
9363 | do_cleanups (old_chain); | |
9364 | ||
9365 | *arg_p = endp; | |
9366 | return sals; | |
9367 | } | |
9368 | ||
fd9b8c24 PA |
9369 | /* Set a breakpoint. This function is shared between CLI and MI |
9370 | functions for setting a breakpoint. This function has two major | |
9371 | modes of operations, selected by the PARSE_CONDITION_AND_THREAD | |
9372 | parameter. If non-zero, the function will parse arg, extracting | |
4a64f543 MS |
9373 | breakpoint location, address and thread. Otherwise, ARG is just |
9374 | the location of breakpoint, with condition and thread specified by | |
9375 | the COND_STRING and THREAD parameters. If INTERNAL is non-zero, | |
9376 | the breakpoint number will be allocated from the internal | |
9377 | breakpoint count. Returns true if any breakpoint was created; | |
9378 | false otherwise. */ | |
0101ce28 | 9379 | |
8cdf0e15 VP |
9380 | int |
9381 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9382 | char *arg, char *cond_string, |
9383 | int thread, char *extra_string, | |
8cdf0e15 | 9384 | int parse_condition_and_thread, |
0fb4aa4b | 9385 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9386 | int ignore_count, |
9387 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9388 | const struct breakpoint_ops *ops, |
44f238bb PA |
9389 | int from_tty, int enabled, int internal, |
9390 | unsigned flags) | |
c3f6f71d | 9391 | { |
b78a6381 | 9392 | volatile struct gdb_exception e; |
f8eba3c6 | 9393 | char *copy_arg = NULL; |
c3f6f71d | 9394 | char *addr_start = arg; |
7efd8fc2 | 9395 | struct linespec_result canonical; |
c3f6f71d | 9396 | struct cleanup *old_chain; |
80c99de1 | 9397 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9398 | int pending = 0; |
4a306c9a | 9399 | int task = 0; |
86b17b60 | 9400 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9401 | |
348d480f PA |
9402 | gdb_assert (ops != NULL); |
9403 | ||
7efd8fc2 | 9404 | init_linespec_result (&canonical); |
c3f6f71d | 9405 | |
b78a6381 TT |
9406 | TRY_CATCH (e, RETURN_MASK_ALL) |
9407 | { | |
983af33b SDJ |
9408 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9409 | addr_start, ©_arg); | |
b78a6381 | 9410 | } |
0101ce28 JJ |
9411 | |
9412 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 9413 | switch (e.reason) |
0101ce28 | 9414 | { |
983af33b SDJ |
9415 | case GDB_NO_ERROR: |
9416 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9417 | return 0; | |
9418 | break; | |
05ff989b AC |
9419 | case RETURN_ERROR: |
9420 | switch (e.error) | |
0101ce28 | 9421 | { |
05ff989b | 9422 | case NOT_FOUND_ERROR: |
0101ce28 | 9423 | |
05ff989b AC |
9424 | /* If pending breakpoint support is turned off, throw |
9425 | error. */ | |
fa8d40ab JJ |
9426 | |
9427 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9428 | throw_exception (e); |
9429 | ||
9430 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9431 | |
05ff989b AC |
9432 | /* If pending breakpoint support is auto query and the user |
9433 | selects no, then simply return the error code. */ | |
059fb39f | 9434 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9435 | && !nquery (_("Make %s pending on future shared library load? "), |
9436 | bptype_string (type_wanted))) | |
fd9b8c24 | 9437 | return 0; |
fa8d40ab | 9438 | |
05ff989b AC |
9439 | /* At this point, either the user was queried about setting |
9440 | a pending breakpoint and selected yes, or pending | |
9441 | breakpoint behavior is on and thus a pending breakpoint | |
9442 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9443 | { |
9444 | struct linespec_sals lsal; | |
9445 | ||
9446 | copy_arg = xstrdup (addr_start); | |
9447 | lsal.canonical = xstrdup (copy_arg); | |
9448 | lsal.sals.nelts = 1; | |
9449 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9450 | init_sal (&lsal.sals.sals[0]); | |
9451 | pending = 1; | |
9452 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9453 | } | |
05ff989b AC |
9454 | break; |
9455 | default: | |
98deb0da | 9456 | throw_exception (e); |
0101ce28 | 9457 | } |
2abae994 | 9458 | break; |
05ff989b | 9459 | default: |
983af33b | 9460 | throw_exception (e); |
0101ce28 | 9461 | } |
c3f6f71d | 9462 | |
4a64f543 | 9463 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9464 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9465 | |
c3f6f71d JM |
9466 | /* ----------------------------- SNIP ----------------------------- |
9467 | Anything added to the cleanup chain beyond this point is assumed | |
9468 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9469 | then the memory is not reclaimed. */ |
9470 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9471 | |
c3f6f71d JM |
9472 | /* Resolve all line numbers to PC's and verify that the addresses |
9473 | are ok for the target. */ | |
0101ce28 | 9474 | if (!pending) |
f8eba3c6 TT |
9475 | { |
9476 | int ix; | |
9477 | struct linespec_sals *iter; | |
9478 | ||
9479 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9480 | breakpoint_sals_to_pc (&iter->sals); | |
9481 | } | |
c3f6f71d | 9482 | |
7a697b8d | 9483 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9484 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9485 | { |
9486 | int ix; | |
9487 | struct linespec_sals *iter; | |
9488 | ||
9489 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9490 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9491 | } | |
7a697b8d | 9492 | |
c3f6f71d JM |
9493 | /* Verify that condition can be parsed, before setting any |
9494 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9495 | breakpoint. */ |
0101ce28 | 9496 | if (!pending) |
c3f6f71d | 9497 | { |
f8eba3c6 TT |
9498 | struct linespec_sals *lsal; |
9499 | ||
9500 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9501 | ||
2f069f6f | 9502 | if (parse_condition_and_thread) |
72b2ff0e | 9503 | { |
e7e0cddf | 9504 | char *rest; |
72b2ff0e VP |
9505 | /* Here we only parse 'arg' to separate condition |
9506 | from thread number, so parsing in context of first | |
9507 | sal is OK. When setting the breakpoint we'll | |
9508 | re-parse it in context of each sal. */ | |
ed1d1739 | 9509 | |
f8eba3c6 | 9510 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
e7e0cddf | 9511 | &thread, &task, &rest); |
72b2ff0e VP |
9512 | if (cond_string) |
9513 | make_cleanup (xfree, cond_string); | |
e7e0cddf SS |
9514 | if (rest) |
9515 | make_cleanup (xfree, rest); | |
9516 | if (rest) | |
9517 | extra_string = rest; | |
72b2ff0e | 9518 | } |
2f069f6f | 9519 | else |
72b2ff0e VP |
9520 | { |
9521 | /* Create a private copy of condition string. */ | |
9522 | if (cond_string) | |
9523 | { | |
9524 | cond_string = xstrdup (cond_string); | |
9525 | make_cleanup (xfree, cond_string); | |
9526 | } | |
e7e0cddf SS |
9527 | /* Create a private copy of any extra string. */ |
9528 | if (extra_string) | |
9529 | { | |
9530 | extra_string = xstrdup (extra_string); | |
9531 | make_cleanup (xfree, extra_string); | |
9532 | } | |
72b2ff0e | 9533 | } |
0fb4aa4b | 9534 | |
983af33b | 9535 | ops->create_breakpoints_sal (gdbarch, &canonical, lsal, |
e7e0cddf | 9536 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9537 | tempflag ? disp_del : disp_donttouch, |
9538 | thread, task, ignore_count, ops, | |
44f238bb | 9539 | from_tty, enabled, internal, flags); |
c906108c | 9540 | } |
0101ce28 JJ |
9541 | else |
9542 | { | |
0101ce28 JJ |
9543 | struct breakpoint *b; |
9544 | ||
0101ce28 JJ |
9545 | make_cleanup (xfree, copy_arg); |
9546 | ||
bfccc43c YQ |
9547 | if (is_tracepoint_type (type_wanted)) |
9548 | { | |
9549 | struct tracepoint *t; | |
9550 | ||
9551 | t = XCNEW (struct tracepoint); | |
9552 | b = &t->base; | |
9553 | } | |
9554 | else | |
9555 | b = XNEW (struct breakpoint); | |
9556 | ||
9557 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9558 | ||
f8eba3c6 | 9559 | b->addr_string = copy_arg; |
e12c7713 MK |
9560 | if (parse_condition_and_thread) |
9561 | b->cond_string = NULL; | |
9562 | else | |
9563 | { | |
9564 | /* Create a private copy of condition string. */ | |
9565 | if (cond_string) | |
9566 | { | |
9567 | cond_string = xstrdup (cond_string); | |
9568 | make_cleanup (xfree, cond_string); | |
9569 | } | |
9570 | b->cond_string = cond_string; | |
9571 | } | |
e7e0cddf | 9572 | b->extra_string = NULL; |
0101ce28 | 9573 | b->ignore_count = ignore_count; |
0101ce28 | 9574 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9575 | b->condition_not_parsed = 1; |
41447f92 | 9576 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9577 | if ((type_wanted != bp_breakpoint |
9578 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9579 | b->pspace = current_program_space; |
8bea4e01 | 9580 | |
bfccc43c | 9581 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9582 | } |
9583 | ||
f8eba3c6 | 9584 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9585 | { |
3e43a32a MS |
9586 | warning (_("Multiple breakpoints were set.\nUse the " |
9587 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9588 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9589 | } |
9590 | ||
80c99de1 PA |
9591 | /* That's it. Discard the cleanups for data inserted into the |
9592 | breakpoint. */ | |
9593 | discard_cleanups (bkpt_chain); | |
9594 | /* But cleanup everything else. */ | |
c3f6f71d | 9595 | do_cleanups (old_chain); |
217dc9e2 | 9596 | |
80c99de1 | 9597 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 9598 | update_global_location_list (1); |
fd9b8c24 PA |
9599 | |
9600 | return 1; | |
c3f6f71d | 9601 | } |
c906108c | 9602 | |
348d480f | 9603 | /* Set a breakpoint. |
72b2ff0e VP |
9604 | ARG is a string describing breakpoint address, |
9605 | condition, and thread. | |
9606 | FLAG specifies if a breakpoint is hardware on, | |
9607 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9608 | and BP_TEMPFLAG. */ | |
348d480f | 9609 | |
98deb0da | 9610 | static void |
72b2ff0e | 9611 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9612 | { |
72b2ff0e | 9613 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9614 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9615 | ? bp_hardware_breakpoint | |
9616 | : bp_breakpoint); | |
55aa24fb SDJ |
9617 | struct breakpoint_ops *ops; |
9618 | const char *arg_cp = arg; | |
9619 | ||
9620 | /* Matching breakpoints on probes. */ | |
9621 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9622 | ops = &bkpt_probe_breakpoint_ops; | |
9623 | else | |
9624 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9625 | |
8cdf0e15 VP |
9626 | create_breakpoint (get_current_arch (), |
9627 | arg, | |
e7e0cddf | 9628 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9629 | tempflag, type_wanted, |
8cdf0e15 VP |
9630 | 0 /* Ignore count */, |
9631 | pending_break_support, | |
55aa24fb | 9632 | ops, |
8cdf0e15 | 9633 | from_tty, |
84f4c1fe | 9634 | 1 /* enabled */, |
44f238bb PA |
9635 | 0 /* internal */, |
9636 | 0); | |
c906108c SS |
9637 | } |
9638 | ||
c906108c SS |
9639 | /* Helper function for break_command_1 and disassemble_command. */ |
9640 | ||
9641 | void | |
fba45db2 | 9642 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9643 | { |
9644 | CORE_ADDR pc; | |
9645 | ||
9646 | if (sal->pc == 0 && sal->symtab != NULL) | |
9647 | { | |
9648 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9649 | error (_("No line %d in file \"%s\"."), |
c906108c SS |
9650 | sal->line, sal->symtab->filename); |
9651 | sal->pc = pc; | |
6a048695 | 9652 | |
4a64f543 MS |
9653 | /* If this SAL corresponds to a breakpoint inserted using a line |
9654 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9655 | if (sal->explicit_line) |
059acae7 | 9656 | skip_prologue_sal (sal); |
c906108c SS |
9657 | } |
9658 | ||
9659 | if (sal->section == 0 && sal->symtab != NULL) | |
9660 | { | |
9661 | struct blockvector *bv; | |
c5aa993b JM |
9662 | struct block *b; |
9663 | struct symbol *sym; | |
c906108c | 9664 | |
801e3a5b | 9665 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
9666 | if (bv != NULL) |
9667 | { | |
7f0df278 | 9668 | sym = block_linkage_function (b); |
c906108c SS |
9669 | if (sym != NULL) |
9670 | { | |
9671 | fixup_symbol_section (sym, sal->symtab->objfile); | |
714835d5 | 9672 | sal->section = SYMBOL_OBJ_SECTION (sym); |
c906108c SS |
9673 | } |
9674 | else | |
9675 | { | |
4a64f543 MS |
9676 | /* It really is worthwhile to have the section, so we'll |
9677 | just have to look harder. This case can be executed | |
9678 | if we have line numbers but no functions (as can | |
9679 | happen in assembly source). */ | |
c906108c | 9680 | |
c5aa993b | 9681 | struct minimal_symbol *msym; |
6c95b8df PA |
9682 | struct cleanup *old_chain = save_current_space_and_thread (); |
9683 | ||
9684 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9685 | |
9686 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
9687 | if (msym) | |
714835d5 | 9688 | sal->section = SYMBOL_OBJ_SECTION (msym); |
6c95b8df PA |
9689 | |
9690 | do_cleanups (old_chain); | |
c906108c SS |
9691 | } |
9692 | } | |
9693 | } | |
9694 | } | |
9695 | ||
9696 | void | |
fba45db2 | 9697 | break_command (char *arg, int from_tty) |
c906108c | 9698 | { |
db107f19 | 9699 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9700 | } |
9701 | ||
c906108c | 9702 | void |
fba45db2 | 9703 | tbreak_command (char *arg, int from_tty) |
c906108c | 9704 | { |
db107f19 | 9705 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9706 | } |
9707 | ||
c906108c | 9708 | static void |
fba45db2 | 9709 | hbreak_command (char *arg, int from_tty) |
c906108c | 9710 | { |
db107f19 | 9711 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9712 | } |
9713 | ||
9714 | static void | |
fba45db2 | 9715 | thbreak_command (char *arg, int from_tty) |
c906108c | 9716 | { |
db107f19 | 9717 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9718 | } |
9719 | ||
9720 | static void | |
fba45db2 | 9721 | stop_command (char *arg, int from_tty) |
c906108c | 9722 | { |
a3f17187 | 9723 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9724 | Usage: stop in <function | address>\n\ |
a3f17187 | 9725 | stop at <line>\n")); |
c906108c SS |
9726 | } |
9727 | ||
9728 | static void | |
fba45db2 | 9729 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9730 | { |
9731 | int badInput = 0; | |
9732 | ||
c5aa993b | 9733 | if (arg == (char *) NULL) |
c906108c SS |
9734 | badInput = 1; |
9735 | else if (*arg != '*') | |
9736 | { | |
9737 | char *argptr = arg; | |
9738 | int hasColon = 0; | |
9739 | ||
4a64f543 | 9740 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9741 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9742 | function/method name. */ |
c906108c | 9743 | while (*argptr && !hasColon) |
c5aa993b JM |
9744 | { |
9745 | hasColon = (*argptr == ':'); | |
9746 | argptr++; | |
9747 | } | |
c906108c SS |
9748 | |
9749 | if (hasColon) | |
c5aa993b | 9750 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9751 | else |
c5aa993b | 9752 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9753 | } |
9754 | ||
9755 | if (badInput) | |
a3f17187 | 9756 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9757 | else |
db107f19 | 9758 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9759 | } |
9760 | ||
9761 | static void | |
fba45db2 | 9762 | stopat_command (char *arg, int from_tty) |
c906108c SS |
9763 | { |
9764 | int badInput = 0; | |
9765 | ||
c5aa993b | 9766 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9767 | badInput = 1; |
9768 | else | |
9769 | { | |
9770 | char *argptr = arg; | |
9771 | int hasColon = 0; | |
9772 | ||
4a64f543 MS |
9773 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9774 | it is probably a line number. */ | |
c906108c | 9775 | while (*argptr && !hasColon) |
c5aa993b JM |
9776 | { |
9777 | hasColon = (*argptr == ':'); | |
9778 | argptr++; | |
9779 | } | |
c906108c SS |
9780 | |
9781 | if (hasColon) | |
c5aa993b | 9782 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9783 | else |
c5aa993b | 9784 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9785 | } |
9786 | ||
9787 | if (badInput) | |
a3f17187 | 9788 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9789 | else |
db107f19 | 9790 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9791 | } |
9792 | ||
e7e0cddf SS |
9793 | void dprintf_command (char *arg, int from_tty); |
9794 | ||
9795 | /* The dynamic printf command is mostly like a regular breakpoint, but | |
9796 | with a prewired command list consisting of a single output command, | |
9797 | built from extra arguments supplied on the dprintf command | |
9798 | line. */ | |
9799 | ||
9800 | void | |
9801 | dprintf_command (char *arg, int from_tty) | |
9802 | { | |
9803 | create_breakpoint (get_current_arch (), | |
9804 | arg, | |
9805 | NULL, 0, NULL, 1 /* parse arg */, | |
9806 | 0, bp_dprintf, | |
9807 | 0 /* Ignore count */, | |
9808 | pending_break_support, | |
9809 | &dprintf_breakpoint_ops, | |
9810 | from_tty, | |
9811 | 1 /* enabled */, | |
9812 | 0 /* internal */, | |
9813 | 0); | |
9814 | } | |
9815 | ||
d3ce09f5 SS |
9816 | static void |
9817 | agent_printf_command (char *arg, int from_tty) | |
9818 | { | |
9819 | error (_("May only run agent-printf on the target")); | |
9820 | } | |
9821 | ||
f1310107 TJB |
9822 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9823 | ranged breakpoints. */ | |
9824 | ||
9825 | static int | |
9826 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9827 | struct address_space *aspace, | |
09ac7c10 TT |
9828 | CORE_ADDR bp_addr, |
9829 | const struct target_waitstatus *ws) | |
f1310107 | 9830 | { |
09ac7c10 | 9831 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9832 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9833 | return 0; |
9834 | ||
f1310107 TJB |
9835 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9836 | bl->length, aspace, bp_addr); | |
9837 | } | |
9838 | ||
9839 | /* Implement the "resources_needed" breakpoint_ops method for | |
9840 | ranged breakpoints. */ | |
9841 | ||
9842 | static int | |
9843 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9844 | { | |
9845 | return target_ranged_break_num_registers (); | |
9846 | } | |
9847 | ||
9848 | /* Implement the "print_it" breakpoint_ops method for | |
9849 | ranged breakpoints. */ | |
9850 | ||
9851 | static enum print_stop_action | |
348d480f | 9852 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9853 | { |
348d480f | 9854 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9855 | struct bp_location *bl = b->loc; |
79a45e25 | 9856 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9857 | |
9858 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9859 | ||
9860 | /* Ranged breakpoints have only one location. */ | |
9861 | gdb_assert (bl && bl->next == NULL); | |
9862 | ||
9863 | annotate_breakpoint (b->number); | |
9864 | if (b->disposition == disp_del) | |
9865 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
9866 | else | |
9867 | ui_out_text (uiout, "\nRanged breakpoint "); | |
9868 | if (ui_out_is_mi_like_p (uiout)) | |
9869 | { | |
9870 | ui_out_field_string (uiout, "reason", | |
9871 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9872 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9873 | } | |
9874 | ui_out_field_int (uiout, "bkptno", b->number); | |
9875 | ui_out_text (uiout, ", "); | |
9876 | ||
9877 | return PRINT_SRC_AND_LOC; | |
9878 | } | |
9879 | ||
9880 | /* Implement the "print_one" breakpoint_ops method for | |
9881 | ranged breakpoints. */ | |
9882 | ||
9883 | static void | |
9884 | print_one_ranged_breakpoint (struct breakpoint *b, | |
9885 | struct bp_location **last_loc) | |
9886 | { | |
9887 | struct bp_location *bl = b->loc; | |
9888 | struct value_print_options opts; | |
79a45e25 | 9889 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9890 | |
9891 | /* Ranged breakpoints have only one location. */ | |
9892 | gdb_assert (bl && bl->next == NULL); | |
9893 | ||
9894 | get_user_print_options (&opts); | |
9895 | ||
9896 | if (opts.addressprint) | |
9897 | /* We don't print the address range here, it will be printed later | |
9898 | by print_one_detail_ranged_breakpoint. */ | |
9899 | ui_out_field_skip (uiout, "addr"); | |
9900 | annotate_field (5); | |
9901 | print_breakpoint_location (b, bl); | |
9902 | *last_loc = bl; | |
9903 | } | |
9904 | ||
9905 | /* Implement the "print_one_detail" breakpoint_ops method for | |
9906 | ranged breakpoints. */ | |
9907 | ||
9908 | static void | |
9909 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
9910 | struct ui_out *uiout) | |
9911 | { | |
9912 | CORE_ADDR address_start, address_end; | |
9913 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
9914 | struct ui_file *stb = mem_fileopen (); |
9915 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
9916 | |
9917 | gdb_assert (bl); | |
9918 | ||
9919 | address_start = bl->address; | |
9920 | address_end = address_start + bl->length - 1; | |
9921 | ||
9922 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 9923 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
9924 | print_core_address (bl->gdbarch, address_start), |
9925 | print_core_address (bl->gdbarch, address_end)); | |
9926 | ui_out_field_stream (uiout, "addr", stb); | |
9927 | ui_out_text (uiout, "\n"); | |
9928 | ||
9929 | do_cleanups (cleanup); | |
9930 | } | |
9931 | ||
9932 | /* Implement the "print_mention" breakpoint_ops method for | |
9933 | ranged breakpoints. */ | |
9934 | ||
9935 | static void | |
9936 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
9937 | { | |
9938 | struct bp_location *bl = b->loc; | |
79a45e25 | 9939 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9940 | |
9941 | gdb_assert (bl); | |
9942 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9943 | ||
9944 | if (ui_out_is_mi_like_p (uiout)) | |
9945 | return; | |
9946 | ||
9947 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
9948 | b->number, paddress (bl->gdbarch, bl->address), | |
9949 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
9950 | } | |
9951 | ||
9952 | /* Implement the "print_recreate" breakpoint_ops method for | |
9953 | ranged breakpoints. */ | |
9954 | ||
9955 | static void | |
9956 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
9957 | { | |
9958 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
9959 | b->addr_string_range_end); | |
d9b3f62e | 9960 | print_recreate_thread (b, fp); |
f1310107 TJB |
9961 | } |
9962 | ||
9963 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
9964 | ||
2060206e | 9965 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
9966 | |
9967 | /* Find the address where the end of the breakpoint range should be | |
9968 | placed, given the SAL of the end of the range. This is so that if | |
9969 | the user provides a line number, the end of the range is set to the | |
9970 | last instruction of the given line. */ | |
9971 | ||
9972 | static CORE_ADDR | |
9973 | find_breakpoint_range_end (struct symtab_and_line sal) | |
9974 | { | |
9975 | CORE_ADDR end; | |
9976 | ||
9977 | /* If the user provided a PC value, use it. Otherwise, | |
9978 | find the address of the end of the given location. */ | |
9979 | if (sal.explicit_pc) | |
9980 | end = sal.pc; | |
9981 | else | |
9982 | { | |
9983 | int ret; | |
9984 | CORE_ADDR start; | |
9985 | ||
9986 | ret = find_line_pc_range (sal, &start, &end); | |
9987 | if (!ret) | |
9988 | error (_("Could not find location of the end of the range.")); | |
9989 | ||
9990 | /* find_line_pc_range returns the start of the next line. */ | |
9991 | end--; | |
9992 | } | |
9993 | ||
9994 | return end; | |
9995 | } | |
9996 | ||
9997 | /* Implement the "break-range" CLI command. */ | |
9998 | ||
9999 | static void | |
10000 | break_range_command (char *arg, int from_tty) | |
10001 | { | |
10002 | char *arg_start, *addr_string_start, *addr_string_end; | |
10003 | struct linespec_result canonical_start, canonical_end; | |
10004 | int bp_count, can_use_bp, length; | |
10005 | CORE_ADDR end; | |
10006 | struct breakpoint *b; | |
10007 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10008 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10009 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
10010 | |
10011 | /* We don't support software ranged breakpoints. */ | |
10012 | if (target_ranged_break_num_registers () < 0) | |
10013 | error (_("This target does not support hardware ranged breakpoints.")); | |
10014 | ||
10015 | bp_count = hw_breakpoint_used_count (); | |
10016 | bp_count += target_ranged_break_num_registers (); | |
10017 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10018 | bp_count, 0); | |
10019 | if (can_use_bp < 0) | |
10020 | error (_("Hardware breakpoints used exceeds limit.")); | |
10021 | ||
f8eba3c6 | 10022 | arg = skip_spaces (arg); |
f1310107 TJB |
10023 | if (arg == NULL || arg[0] == '\0') |
10024 | error(_("No address range specified.")); | |
10025 | ||
f1310107 TJB |
10026 | init_linespec_result (&canonical_start); |
10027 | ||
f8eba3c6 TT |
10028 | arg_start = arg; |
10029 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 10030 | |
f8eba3c6 | 10031 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
10032 | |
10033 | if (arg[0] != ',') | |
10034 | error (_("Too few arguments.")); | |
f8eba3c6 | 10035 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10036 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10037 | |
10038 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10039 | ||
10040 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10041 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10042 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10043 | ||
f8eba3c6 TT |
10044 | sal_start = lsal_start->sals.sals[0]; |
10045 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10046 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10047 | |
10048 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10049 | arg = skip_spaces (arg); |
f1310107 TJB |
10050 | |
10051 | /* Parse the end location. */ | |
10052 | ||
f1310107 TJB |
10053 | init_linespec_result (&canonical_end); |
10054 | arg_start = arg; | |
10055 | ||
f8eba3c6 | 10056 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10057 | parse_breakpoint_sals because we need to specify the start location's |
10058 | symtab and line as the default symtab and line for the end of the | |
10059 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10060 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
10061 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
10062 | sal_start.symtab, sal_start.line, | |
10063 | &canonical_end, NULL, NULL); | |
10064 | ||
10065 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10066 | |
f8eba3c6 | 10067 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10068 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10069 | |
10070 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10071 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10072 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10073 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10074 | ||
f8eba3c6 TT |
10075 | sal_end = lsal_end->sals.sals[0]; |
10076 | addr_string_end = savestring (arg_start, arg - arg_start); | |
10077 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
10078 | |
10079 | end = find_breakpoint_range_end (sal_end); | |
10080 | if (sal_start.pc > end) | |
177b42fe | 10081 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10082 | |
10083 | length = end - sal_start.pc + 1; | |
10084 | if (length < 0) | |
10085 | /* Length overflowed. */ | |
10086 | error (_("Address range too large.")); | |
10087 | else if (length == 1) | |
10088 | { | |
10089 | /* This range is simple enough to be handled by | |
10090 | the `hbreak' command. */ | |
10091 | hbreak_command (addr_string_start, 1); | |
10092 | ||
10093 | do_cleanups (cleanup_bkpt); | |
10094 | ||
10095 | return; | |
10096 | } | |
10097 | ||
10098 | /* Now set up the breakpoint. */ | |
10099 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10100 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10101 | set_breakpoint_count (breakpoint_count + 1); |
10102 | b->number = breakpoint_count; | |
10103 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
10104 | b->addr_string = xstrdup (addr_string_start); |
10105 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
10106 | b->loc->length = length; |
10107 | ||
f8eba3c6 | 10108 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10109 | |
10110 | mention (b); | |
8d3788bd | 10111 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
10112 | update_global_location_list (1); |
10113 | } | |
10114 | ||
4a64f543 MS |
10115 | /* Return non-zero if EXP is verified as constant. Returned zero |
10116 | means EXP is variable. Also the constant detection may fail for | |
10117 | some constant expressions and in such case still falsely return | |
10118 | zero. */ | |
2e6e3d9c | 10119 | |
65d79d4b SDJ |
10120 | static int |
10121 | watchpoint_exp_is_const (const struct expression *exp) | |
10122 | { | |
10123 | int i = exp->nelts; | |
10124 | ||
10125 | while (i > 0) | |
10126 | { | |
10127 | int oplenp, argsp; | |
10128 | ||
10129 | /* We are only interested in the descriptor of each element. */ | |
10130 | operator_length (exp, i, &oplenp, &argsp); | |
10131 | i -= oplenp; | |
10132 | ||
10133 | switch (exp->elts[i].opcode) | |
10134 | { | |
10135 | case BINOP_ADD: | |
10136 | case BINOP_SUB: | |
10137 | case BINOP_MUL: | |
10138 | case BINOP_DIV: | |
10139 | case BINOP_REM: | |
10140 | case BINOP_MOD: | |
10141 | case BINOP_LSH: | |
10142 | case BINOP_RSH: | |
10143 | case BINOP_LOGICAL_AND: | |
10144 | case BINOP_LOGICAL_OR: | |
10145 | case BINOP_BITWISE_AND: | |
10146 | case BINOP_BITWISE_IOR: | |
10147 | case BINOP_BITWISE_XOR: | |
10148 | case BINOP_EQUAL: | |
10149 | case BINOP_NOTEQUAL: | |
10150 | case BINOP_LESS: | |
10151 | case BINOP_GTR: | |
10152 | case BINOP_LEQ: | |
10153 | case BINOP_GEQ: | |
10154 | case BINOP_REPEAT: | |
10155 | case BINOP_COMMA: | |
10156 | case BINOP_EXP: | |
10157 | case BINOP_MIN: | |
10158 | case BINOP_MAX: | |
10159 | case BINOP_INTDIV: | |
10160 | case BINOP_CONCAT: | |
10161 | case BINOP_IN: | |
10162 | case BINOP_RANGE: | |
10163 | case TERNOP_COND: | |
10164 | case TERNOP_SLICE: | |
10165 | case TERNOP_SLICE_COUNT: | |
10166 | ||
10167 | case OP_LONG: | |
10168 | case OP_DOUBLE: | |
10169 | case OP_DECFLOAT: | |
10170 | case OP_LAST: | |
10171 | case OP_COMPLEX: | |
10172 | case OP_STRING: | |
10173 | case OP_BITSTRING: | |
10174 | case OP_ARRAY: | |
10175 | case OP_TYPE: | |
608b4967 TT |
10176 | case OP_TYPEOF: |
10177 | case OP_DECLTYPE: | |
65d79d4b SDJ |
10178 | case OP_NAME: |
10179 | case OP_OBJC_NSSTRING: | |
10180 | ||
10181 | case UNOP_NEG: | |
10182 | case UNOP_LOGICAL_NOT: | |
10183 | case UNOP_COMPLEMENT: | |
10184 | case UNOP_ADDR: | |
10185 | case UNOP_HIGH: | |
aeaa2474 | 10186 | case UNOP_CAST: |
9eaf6705 TT |
10187 | |
10188 | case UNOP_CAST_TYPE: | |
10189 | case UNOP_REINTERPRET_CAST: | |
10190 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10191 | /* Unary, binary and ternary operators: We have to check |
10192 | their operands. If they are constant, then so is the | |
10193 | result of that operation. For instance, if A and B are | |
10194 | determined to be constants, then so is "A + B". | |
10195 | ||
10196 | UNOP_IND is one exception to the rule above, because the | |
10197 | value of *ADDR is not necessarily a constant, even when | |
10198 | ADDR is. */ | |
65d79d4b SDJ |
10199 | break; |
10200 | ||
10201 | case OP_VAR_VALUE: | |
10202 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10203 | |
65d79d4b | 10204 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10205 | possible that a buggy compiler could mark a variable as |
10206 | constant even when it is not, and TYPE_CONST would return | |
10207 | true in this case, while SYMBOL_CLASS wouldn't. | |
10208 | ||
10209 | We also have to check for function symbols because they | |
10210 | are always constant. */ | |
65d79d4b SDJ |
10211 | { |
10212 | struct symbol *s = exp->elts[i + 2].symbol; | |
10213 | ||
10214 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10215 | && SYMBOL_CLASS (s) != LOC_CONST | |
10216 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10217 | return 0; | |
10218 | break; | |
10219 | } | |
10220 | ||
10221 | /* The default action is to return 0 because we are using | |
10222 | the optimistic approach here: If we don't know something, | |
10223 | then it is not a constant. */ | |
10224 | default: | |
10225 | return 0; | |
10226 | } | |
10227 | } | |
10228 | ||
10229 | return 1; | |
10230 | } | |
10231 | ||
3a5c3e22 PA |
10232 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10233 | ||
10234 | static void | |
10235 | dtor_watchpoint (struct breakpoint *self) | |
10236 | { | |
10237 | struct watchpoint *w = (struct watchpoint *) self; | |
10238 | ||
10239 | xfree (w->cond_exp); | |
10240 | xfree (w->exp); | |
10241 | xfree (w->exp_string); | |
10242 | xfree (w->exp_string_reparse); | |
10243 | value_free (w->val); | |
10244 | ||
10245 | base_breakpoint_ops.dtor (self); | |
10246 | } | |
10247 | ||
348d480f PA |
10248 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10249 | ||
10250 | static void | |
10251 | re_set_watchpoint (struct breakpoint *b) | |
10252 | { | |
3a5c3e22 PA |
10253 | struct watchpoint *w = (struct watchpoint *) b; |
10254 | ||
348d480f PA |
10255 | /* Watchpoint can be either on expression using entirely global |
10256 | variables, or it can be on local variables. | |
10257 | ||
10258 | Watchpoints of the first kind are never auto-deleted, and even | |
10259 | persist across program restarts. Since they can use variables | |
10260 | from shared libraries, we need to reparse expression as libraries | |
10261 | are loaded and unloaded. | |
10262 | ||
10263 | Watchpoints on local variables can also change meaning as result | |
10264 | of solib event. For example, if a watchpoint uses both a local | |
10265 | and a global variables in expression, it's a local watchpoint, | |
10266 | but unloading of a shared library will make the expression | |
10267 | invalid. This is not a very common use case, but we still | |
10268 | re-evaluate expression, to avoid surprises to the user. | |
10269 | ||
10270 | Note that for local watchpoints, we re-evaluate it only if | |
10271 | watchpoints frame id is still valid. If it's not, it means the | |
10272 | watchpoint is out of scope and will be deleted soon. In fact, | |
10273 | I'm not sure we'll ever be called in this case. | |
10274 | ||
10275 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10276 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10277 | |
3a5c3e22 PA |
10278 | Don't do anything about disabled watchpoints, since they will be |
10279 | reevaluated again when enabled. */ | |
10280 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10281 | } |
10282 | ||
77b06cd7 TJB |
10283 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10284 | ||
10285 | static int | |
10286 | insert_watchpoint (struct bp_location *bl) | |
10287 | { | |
3a5c3e22 PA |
10288 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10289 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10290 | |
10291 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10292 | w->cond_exp); |
77b06cd7 TJB |
10293 | } |
10294 | ||
10295 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10296 | ||
10297 | static int | |
10298 | remove_watchpoint (struct bp_location *bl) | |
10299 | { | |
3a5c3e22 PA |
10300 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10301 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10302 | |
10303 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10304 | w->cond_exp); |
e09342b5 TJB |
10305 | } |
10306 | ||
e09342b5 | 10307 | static int |
348d480f | 10308 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10309 | struct address_space *aspace, CORE_ADDR bp_addr, |
10310 | const struct target_waitstatus *ws) | |
e09342b5 | 10311 | { |
348d480f | 10312 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10313 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10314 | |
348d480f PA |
10315 | /* Continuable hardware watchpoints are treated as non-existent if the |
10316 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10317 | some data address). Otherwise gdb won't stop on a break instruction | |
10318 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10319 | been defined. Also skip watchpoints which we know did not trigger | |
10320 | (did not match the data address). */ | |
10321 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10322 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10323 | return 0; |
9c06b0b4 | 10324 | |
348d480f | 10325 | return 1; |
9c06b0b4 TJB |
10326 | } |
10327 | ||
348d480f PA |
10328 | static void |
10329 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10330 | { |
348d480f | 10331 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10332 | |
348d480f | 10333 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10334 | } |
10335 | ||
10336 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10337 | hardware watchpoints. */ |
9c06b0b4 TJB |
10338 | |
10339 | static int | |
348d480f | 10340 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10341 | { |
3a5c3e22 PA |
10342 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10343 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10344 | |
10345 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10346 | } |
10347 | ||
10348 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10349 | hardware watchpoints. */ |
9c06b0b4 TJB |
10350 | |
10351 | static int | |
348d480f | 10352 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10353 | { |
efa80663 PA |
10354 | /* Read and access watchpoints only work with hardware support. */ |
10355 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10356 | } |
10357 | ||
9c06b0b4 | 10358 | static enum print_stop_action |
348d480f | 10359 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10360 | { |
348d480f PA |
10361 | struct cleanup *old_chain; |
10362 | struct breakpoint *b; | |
10363 | const struct bp_location *bl; | |
f99d8bf4 | 10364 | struct ui_file *stb; |
348d480f | 10365 | enum print_stop_action result; |
3a5c3e22 | 10366 | struct watchpoint *w; |
79a45e25 | 10367 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10368 | |
10369 | gdb_assert (bs->bp_location_at != NULL); | |
10370 | ||
10371 | bl = bs->bp_location_at; | |
10372 | b = bs->breakpoint_at; | |
3a5c3e22 | 10373 | w = (struct watchpoint *) b; |
348d480f | 10374 | |
f99d8bf4 PA |
10375 | stb = mem_fileopen (); |
10376 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10377 | |
10378 | switch (b->type) | |
10379 | { | |
348d480f | 10380 | case bp_watchpoint: |
9c06b0b4 TJB |
10381 | case bp_hardware_watchpoint: |
10382 | annotate_watchpoint (b->number); | |
10383 | if (ui_out_is_mi_like_p (uiout)) | |
10384 | ui_out_field_string | |
10385 | (uiout, "reason", | |
10386 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10387 | mention (b); |
10388 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10389 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10390 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10391 | ui_out_field_stream (uiout, "old", stb); |
10392 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10393 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10394 | ui_out_field_stream (uiout, "new", stb); |
10395 | ui_out_text (uiout, "\n"); | |
10396 | /* More than one watchpoint may have been triggered. */ | |
10397 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10398 | break; |
10399 | ||
10400 | case bp_read_watchpoint: | |
10401 | if (ui_out_is_mi_like_p (uiout)) | |
10402 | ui_out_field_string | |
10403 | (uiout, "reason", | |
10404 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10405 | mention (b); |
10406 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10407 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10408 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10409 | ui_out_field_stream (uiout, "value", stb); |
10410 | ui_out_text (uiout, "\n"); | |
10411 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10412 | break; |
10413 | ||
10414 | case bp_access_watchpoint: | |
348d480f PA |
10415 | if (bs->old_val != NULL) |
10416 | { | |
10417 | annotate_watchpoint (b->number); | |
10418 | if (ui_out_is_mi_like_p (uiout)) | |
10419 | ui_out_field_string | |
10420 | (uiout, "reason", | |
10421 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10422 | mention (b); | |
10423 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10424 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10425 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10426 | ui_out_field_stream (uiout, "old", stb); |
10427 | ui_out_text (uiout, "\nNew value = "); | |
10428 | } | |
10429 | else | |
10430 | { | |
10431 | mention (b); | |
10432 | if (ui_out_is_mi_like_p (uiout)) | |
10433 | ui_out_field_string | |
10434 | (uiout, "reason", | |
10435 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10436 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10437 | ui_out_text (uiout, "\nValue = "); | |
10438 | } | |
f99d8bf4 | 10439 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10440 | ui_out_field_stream (uiout, "new", stb); |
10441 | ui_out_text (uiout, "\n"); | |
10442 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10443 | break; |
10444 | default: | |
348d480f | 10445 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10446 | } |
10447 | ||
348d480f PA |
10448 | do_cleanups (old_chain); |
10449 | return result; | |
10450 | } | |
10451 | ||
10452 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10453 | watchpoints. */ | |
10454 | ||
10455 | static void | |
10456 | print_mention_watchpoint (struct breakpoint *b) | |
10457 | { | |
10458 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10459 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10460 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10461 | |
10462 | switch (b->type) | |
10463 | { | |
10464 | case bp_watchpoint: | |
10465 | ui_out_text (uiout, "Watchpoint "); | |
10466 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10467 | break; | |
10468 | case bp_hardware_watchpoint: | |
10469 | ui_out_text (uiout, "Hardware watchpoint "); | |
10470 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10471 | break; | |
10472 | case bp_read_watchpoint: | |
10473 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10474 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10475 | break; | |
10476 | case bp_access_watchpoint: | |
10477 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10478 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10479 | break; | |
10480 | default: | |
10481 | internal_error (__FILE__, __LINE__, | |
10482 | _("Invalid hardware watchpoint type.")); | |
10483 | } | |
10484 | ||
10485 | ui_out_field_int (uiout, "number", b->number); | |
10486 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10487 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10488 | do_cleanups (ui_out_chain); |
10489 | } | |
10490 | ||
10491 | /* Implement the "print_recreate" breakpoint_ops method for | |
10492 | watchpoints. */ | |
10493 | ||
10494 | static void | |
10495 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10496 | { | |
3a5c3e22 PA |
10497 | struct watchpoint *w = (struct watchpoint *) b; |
10498 | ||
348d480f PA |
10499 | switch (b->type) |
10500 | { | |
10501 | case bp_watchpoint: | |
10502 | case bp_hardware_watchpoint: | |
10503 | fprintf_unfiltered (fp, "watch"); | |
10504 | break; | |
10505 | case bp_read_watchpoint: | |
10506 | fprintf_unfiltered (fp, "rwatch"); | |
10507 | break; | |
10508 | case bp_access_watchpoint: | |
10509 | fprintf_unfiltered (fp, "awatch"); | |
10510 | break; | |
10511 | default: | |
10512 | internal_error (__FILE__, __LINE__, | |
10513 | _("Invalid watchpoint type.")); | |
10514 | } | |
10515 | ||
3a5c3e22 | 10516 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10517 | print_recreate_thread (b, fp); |
348d480f PA |
10518 | } |
10519 | ||
10520 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ | |
10521 | ||
2060206e | 10522 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10523 | |
10524 | /* Implement the "insert" breakpoint_ops method for | |
10525 | masked hardware watchpoints. */ | |
10526 | ||
10527 | static int | |
10528 | insert_masked_watchpoint (struct bp_location *bl) | |
10529 | { | |
3a5c3e22 PA |
10530 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10531 | ||
10532 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10533 | bl->watchpoint_type); |
10534 | } | |
10535 | ||
10536 | /* Implement the "remove" breakpoint_ops method for | |
10537 | masked hardware watchpoints. */ | |
10538 | ||
10539 | static int | |
10540 | remove_masked_watchpoint (struct bp_location *bl) | |
10541 | { | |
3a5c3e22 PA |
10542 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10543 | ||
10544 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10545 | bl->watchpoint_type); |
10546 | } | |
10547 | ||
10548 | /* Implement the "resources_needed" breakpoint_ops method for | |
10549 | masked hardware watchpoints. */ | |
10550 | ||
10551 | static int | |
10552 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10553 | { | |
3a5c3e22 PA |
10554 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10555 | ||
10556 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10557 | } |
10558 | ||
10559 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10560 | masked hardware watchpoints. */ | |
10561 | ||
10562 | static int | |
10563 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10564 | { | |
10565 | return 0; | |
10566 | } | |
10567 | ||
10568 | /* Implement the "print_it" breakpoint_ops method for | |
10569 | masked hardware watchpoints. */ | |
10570 | ||
10571 | static enum print_stop_action | |
10572 | print_it_masked_watchpoint (bpstat bs) | |
10573 | { | |
10574 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10575 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10576 | |
10577 | /* Masked watchpoints have only one location. */ | |
10578 | gdb_assert (b->loc && b->loc->next == NULL); | |
10579 | ||
10580 | switch (b->type) | |
10581 | { | |
10582 | case bp_hardware_watchpoint: | |
10583 | annotate_watchpoint (b->number); | |
10584 | if (ui_out_is_mi_like_p (uiout)) | |
10585 | ui_out_field_string | |
10586 | (uiout, "reason", | |
10587 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10588 | break; | |
10589 | ||
10590 | case bp_read_watchpoint: | |
10591 | if (ui_out_is_mi_like_p (uiout)) | |
10592 | ui_out_field_string | |
10593 | (uiout, "reason", | |
10594 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10595 | break; | |
10596 | ||
10597 | case bp_access_watchpoint: | |
10598 | if (ui_out_is_mi_like_p (uiout)) | |
10599 | ui_out_field_string | |
10600 | (uiout, "reason", | |
10601 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10602 | break; | |
10603 | default: | |
10604 | internal_error (__FILE__, __LINE__, | |
10605 | _("Invalid hardware watchpoint type.")); | |
10606 | } | |
10607 | ||
10608 | mention (b); | |
9c06b0b4 TJB |
10609 | ui_out_text (uiout, _("\n\ |
10610 | Check the underlying instruction at PC for the memory\n\ | |
10611 | address and value which triggered this watchpoint.\n")); | |
10612 | ui_out_text (uiout, "\n"); | |
10613 | ||
10614 | /* More than one watchpoint may have been triggered. */ | |
10615 | return PRINT_UNKNOWN; | |
10616 | } | |
10617 | ||
10618 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10619 | masked hardware watchpoints. */ | |
10620 | ||
10621 | static void | |
10622 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10623 | struct ui_out *uiout) | |
10624 | { | |
3a5c3e22 PA |
10625 | struct watchpoint *w = (struct watchpoint *) b; |
10626 | ||
9c06b0b4 TJB |
10627 | /* Masked watchpoints have only one location. */ |
10628 | gdb_assert (b->loc && b->loc->next == NULL); | |
10629 | ||
10630 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10631 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10632 | ui_out_text (uiout, "\n"); |
10633 | } | |
10634 | ||
10635 | /* Implement the "print_mention" breakpoint_ops method for | |
10636 | masked hardware watchpoints. */ | |
10637 | ||
10638 | static void | |
10639 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10640 | { | |
3a5c3e22 | 10641 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10642 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10643 | struct cleanup *ui_out_chain; |
10644 | ||
10645 | switch (b->type) | |
10646 | { | |
10647 | case bp_hardware_watchpoint: | |
10648 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10649 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10650 | break; | |
10651 | case bp_read_watchpoint: | |
10652 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10653 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10654 | break; | |
10655 | case bp_access_watchpoint: | |
10656 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10657 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10658 | break; | |
10659 | default: | |
10660 | internal_error (__FILE__, __LINE__, | |
10661 | _("Invalid hardware watchpoint type.")); | |
10662 | } | |
10663 | ||
10664 | ui_out_field_int (uiout, "number", b->number); | |
10665 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10666 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10667 | do_cleanups (ui_out_chain); |
10668 | } | |
10669 | ||
10670 | /* Implement the "print_recreate" breakpoint_ops method for | |
10671 | masked hardware watchpoints. */ | |
10672 | ||
10673 | static void | |
10674 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10675 | { | |
3a5c3e22 | 10676 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10677 | char tmp[40]; |
10678 | ||
10679 | switch (b->type) | |
10680 | { | |
10681 | case bp_hardware_watchpoint: | |
10682 | fprintf_unfiltered (fp, "watch"); | |
10683 | break; | |
10684 | case bp_read_watchpoint: | |
10685 | fprintf_unfiltered (fp, "rwatch"); | |
10686 | break; | |
10687 | case bp_access_watchpoint: | |
10688 | fprintf_unfiltered (fp, "awatch"); | |
10689 | break; | |
10690 | default: | |
10691 | internal_error (__FILE__, __LINE__, | |
10692 | _("Invalid hardware watchpoint type.")); | |
10693 | } | |
10694 | ||
3a5c3e22 PA |
10695 | sprintf_vma (tmp, w->hw_wp_mask); |
10696 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10697 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10698 | } |
10699 | ||
10700 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10701 | ||
2060206e | 10702 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10703 | |
10704 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10705 | ||
10706 | static int | |
10707 | is_masked_watchpoint (const struct breakpoint *b) | |
10708 | { | |
10709 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10710 | } | |
10711 | ||
53a5351d JM |
10712 | /* accessflag: hw_write: watch write, |
10713 | hw_read: watch read, | |
10714 | hw_access: watch access (read or write) */ | |
c906108c | 10715 | static void |
84f4c1fe PM |
10716 | watch_command_1 (char *arg, int accessflag, int from_tty, |
10717 | int just_location, int internal) | |
c906108c | 10718 | { |
a9634178 | 10719 | volatile struct gdb_exception e; |
d983da9c | 10720 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10721 | struct expression *exp; |
60e1c644 | 10722 | struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10723 | struct value *val, *mark, *result; |
c906108c | 10724 | struct frame_info *frame; |
c906108c SS |
10725 | char *exp_start = NULL; |
10726 | char *exp_end = NULL; | |
9c06b0b4 TJB |
10727 | char *tok, *end_tok; |
10728 | int toklen = -1; | |
c906108c SS |
10729 | char *cond_start = NULL; |
10730 | char *cond_end = NULL; | |
c906108c | 10731 | enum bptype bp_type; |
37e4754d | 10732 | int thread = -1; |
0cf6dd15 | 10733 | int pc = 0; |
9c06b0b4 TJB |
10734 | /* Flag to indicate whether we are going to use masks for |
10735 | the hardware watchpoint. */ | |
10736 | int use_mask = 0; | |
10737 | CORE_ADDR mask = 0; | |
3a5c3e22 | 10738 | struct watchpoint *w; |
c906108c | 10739 | |
37e4754d LM |
10740 | /* Make sure that we actually have parameters to parse. */ |
10741 | if (arg != NULL && arg[0] != '\0') | |
10742 | { | |
9c06b0b4 | 10743 | char *value_start; |
37e4754d | 10744 | |
9c06b0b4 TJB |
10745 | /* Look for "parameter value" pairs at the end |
10746 | of the arguments string. */ | |
10747 | for (tok = arg + strlen (arg) - 1; tok > arg; tok--) | |
10748 | { | |
10749 | /* Skip whitespace at the end of the argument list. */ | |
10750 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10751 | tok--; | |
10752 | ||
10753 | /* Find the beginning of the last token. | |
10754 | This is the value of the parameter. */ | |
10755 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10756 | tok--; | |
10757 | value_start = tok + 1; | |
10758 | ||
10759 | /* Skip whitespace. */ | |
10760 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10761 | tok--; | |
10762 | ||
10763 | end_tok = tok; | |
10764 | ||
10765 | /* Find the beginning of the second to last token. | |
10766 | This is the parameter itself. */ | |
10767 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10768 | tok--; | |
10769 | tok++; | |
10770 | toklen = end_tok - tok + 1; | |
10771 | ||
10772 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
10773 | { | |
10774 | /* At this point we've found a "thread" token, which means | |
10775 | the user is trying to set a watchpoint that triggers | |
10776 | only in a specific thread. */ | |
10777 | char *endp; | |
37e4754d | 10778 | |
9c06b0b4 TJB |
10779 | if (thread != -1) |
10780 | error(_("You can specify only one thread.")); | |
37e4754d | 10781 | |
9c06b0b4 TJB |
10782 | /* Extract the thread ID from the next token. */ |
10783 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 10784 | |
9c06b0b4 TJB |
10785 | /* Check if the user provided a valid numeric value for the |
10786 | thread ID. */ | |
10787 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
10788 | error (_("Invalid thread ID specification %s."), value_start); | |
10789 | ||
10790 | /* Check if the thread actually exists. */ | |
10791 | if (!valid_thread_id (thread)) | |
af4908ba | 10792 | invalid_thread_id_error (thread); |
9c06b0b4 TJB |
10793 | } |
10794 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
10795 | { | |
10796 | /* We've found a "mask" token, which means the user wants to | |
10797 | create a hardware watchpoint that is going to have the mask | |
10798 | facility. */ | |
10799 | struct value *mask_value, *mark; | |
37e4754d | 10800 | |
9c06b0b4 TJB |
10801 | if (use_mask) |
10802 | error(_("You can specify only one mask.")); | |
37e4754d | 10803 | |
9c06b0b4 | 10804 | use_mask = just_location = 1; |
37e4754d | 10805 | |
9c06b0b4 TJB |
10806 | mark = value_mark (); |
10807 | mask_value = parse_to_comma_and_eval (&value_start); | |
10808 | mask = value_as_address (mask_value); | |
10809 | value_free_to_mark (mark); | |
10810 | } | |
10811 | else | |
10812 | /* We didn't recognize what we found. We should stop here. */ | |
10813 | break; | |
37e4754d | 10814 | |
9c06b0b4 TJB |
10815 | /* Truncate the string and get rid of the "parameter value" pair before |
10816 | the arguments string is parsed by the parse_exp_1 function. */ | |
10817 | *tok = '\0'; | |
10818 | } | |
37e4754d LM |
10819 | } |
10820 | ||
10821 | /* Parse the rest of the arguments. */ | |
c906108c SS |
10822 | innermost_block = NULL; |
10823 | exp_start = arg; | |
1bb9788d | 10824 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10825 | exp_end = arg; |
fa8a61dc TT |
10826 | /* Remove trailing whitespace from the expression before saving it. |
10827 | This makes the eventual display of the expression string a bit | |
10828 | prettier. */ | |
10829 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10830 | --exp_end; | |
10831 | ||
65d79d4b SDJ |
10832 | /* Checking if the expression is not constant. */ |
10833 | if (watchpoint_exp_is_const (exp)) | |
10834 | { | |
10835 | int len; | |
10836 | ||
10837 | len = exp_end - exp_start; | |
10838 | while (len > 0 && isspace (exp_start[len - 1])) | |
10839 | len--; | |
10840 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10841 | } | |
10842 | ||
c906108c SS |
10843 | exp_valid_block = innermost_block; |
10844 | mark = value_mark (); | |
a1442452 | 10845 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
10846 | |
10847 | if (just_location) | |
10848 | { | |
9c06b0b4 TJB |
10849 | int ret; |
10850 | ||
06a64a0b | 10851 | exp_valid_block = NULL; |
a1442452 | 10852 | val = value_addr (result); |
06a64a0b TT |
10853 | release_value (val); |
10854 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
10855 | |
10856 | if (use_mask) | |
10857 | { | |
10858 | ret = target_masked_watch_num_registers (value_as_address (val), | |
10859 | mask); | |
10860 | if (ret == -1) | |
10861 | error (_("This target does not support masked watchpoints.")); | |
10862 | else if (ret == -2) | |
10863 | error (_("Invalid mask or memory region.")); | |
10864 | } | |
06a64a0b TT |
10865 | } |
10866 | else if (val != NULL) | |
fa4727a6 | 10867 | release_value (val); |
c906108c | 10868 | |
e9cafbcc TT |
10869 | tok = skip_spaces (arg); |
10870 | end_tok = skip_to_space (tok); | |
c906108c SS |
10871 | |
10872 | toklen = end_tok - tok; | |
10873 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
10874 | { | |
2d134ed3 PA |
10875 | struct expression *cond; |
10876 | ||
60e1c644 | 10877 | innermost_block = NULL; |
c906108c | 10878 | tok = cond_start = end_tok + 1; |
1bb9788d | 10879 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
10880 | |
10881 | /* The watchpoint expression may not be local, but the condition | |
10882 | may still be. E.g.: `watch global if local > 0'. */ | |
10883 | cond_exp_valid_block = innermost_block; | |
10884 | ||
2d134ed3 | 10885 | xfree (cond); |
c906108c SS |
10886 | cond_end = tok; |
10887 | } | |
10888 | if (*tok) | |
8a3fe4f8 | 10889 | error (_("Junk at end of command.")); |
c906108c | 10890 | |
53a5351d | 10891 | if (accessflag == hw_read) |
c5aa993b | 10892 | bp_type = bp_read_watchpoint; |
53a5351d | 10893 | else if (accessflag == hw_access) |
c5aa993b JM |
10894 | bp_type = bp_access_watchpoint; |
10895 | else | |
10896 | bp_type = bp_hardware_watchpoint; | |
c906108c | 10897 | |
d983da9c | 10898 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
10899 | |
10900 | /* If the expression is "local", then set up a "watchpoint scope" | |
10901 | breakpoint at the point where we've left the scope of the watchpoint | |
10902 | expression. Create the scope breakpoint before the watchpoint, so | |
10903 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 10904 | if (exp_valid_block && frame) |
d983da9c | 10905 | { |
edb3359d DJ |
10906 | if (frame_id_p (frame_unwind_caller_id (frame))) |
10907 | { | |
10908 | scope_breakpoint | |
a6d9a66e UW |
10909 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
10910 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
10911 | bp_watchpoint_scope, |
10912 | &momentary_breakpoint_ops); | |
d983da9c | 10913 | |
edb3359d | 10914 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 10915 | |
edb3359d DJ |
10916 | /* Automatically delete the breakpoint when it hits. */ |
10917 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 10918 | |
edb3359d DJ |
10919 | /* Only break in the proper frame (help with recursion). */ |
10920 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 10921 | |
edb3359d | 10922 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
10923 | scope_breakpoint->loc->gdbarch |
10924 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
10925 | scope_breakpoint->loc->requested_address |
10926 | = frame_unwind_caller_pc (frame); | |
10927 | scope_breakpoint->loc->address | |
a6d9a66e UW |
10928 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
10929 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
10930 | scope_breakpoint->type); |
10931 | } | |
d983da9c DJ |
10932 | } |
10933 | ||
c906108c | 10934 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
10935 | |
10936 | w = XCNEW (struct watchpoint); | |
10937 | b = &w->base; | |
348d480f | 10938 | if (use_mask) |
3a5c3e22 PA |
10939 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10940 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 10941 | else |
3a5c3e22 PA |
10942 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
10943 | &watchpoint_breakpoint_ops); | |
37e4754d | 10944 | b->thread = thread; |
b5de0fa7 | 10945 | b->disposition = disp_donttouch; |
348d480f | 10946 | b->pspace = current_program_space; |
3a5c3e22 PA |
10947 | w->exp = exp; |
10948 | w->exp_valid_block = exp_valid_block; | |
10949 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
10950 | if (just_location) |
10951 | { | |
10952 | struct type *t = value_type (val); | |
10953 | CORE_ADDR addr = value_as_address (val); | |
10954 | char *name; | |
10955 | ||
10956 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
10957 | name = type_to_string (t); | |
10958 | ||
3a5c3e22 | 10959 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 10960 | core_addr_to_string (addr)); |
06a64a0b TT |
10961 | xfree (name); |
10962 | ||
3a5c3e22 | 10963 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
10964 | (int) (exp_end - exp_start), exp_start); |
10965 | ||
06a64a0b TT |
10966 | /* The above expression is in C. */ |
10967 | b->language = language_c; | |
10968 | } | |
10969 | else | |
3a5c3e22 | 10970 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
10971 | |
10972 | if (use_mask) | |
10973 | { | |
3a5c3e22 | 10974 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
10975 | } |
10976 | else | |
10977 | { | |
3a5c3e22 PA |
10978 | w->val = val; |
10979 | w->val_valid = 1; | |
9c06b0b4 | 10980 | } |
77b06cd7 | 10981 | |
c906108c SS |
10982 | if (cond_start) |
10983 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
10984 | else | |
10985 | b->cond_string = 0; | |
c5aa993b | 10986 | |
c906108c | 10987 | if (frame) |
f6bc2008 | 10988 | { |
3a5c3e22 PA |
10989 | w->watchpoint_frame = get_frame_id (frame); |
10990 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 10991 | } |
c906108c | 10992 | else |
f6bc2008 | 10993 | { |
3a5c3e22 PA |
10994 | w->watchpoint_frame = null_frame_id; |
10995 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 10996 | } |
c906108c | 10997 | |
d983da9c | 10998 | if (scope_breakpoint != NULL) |
c906108c | 10999 | { |
d983da9c DJ |
11000 | /* The scope breakpoint is related to the watchpoint. We will |
11001 | need to act on them together. */ | |
11002 | b->related_breakpoint = scope_breakpoint; | |
11003 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11004 | } |
d983da9c | 11005 | |
06a64a0b TT |
11006 | if (!just_location) |
11007 | value_free_to_mark (mark); | |
2d134ed3 | 11008 | |
a9634178 TJB |
11009 | TRY_CATCH (e, RETURN_MASK_ALL) |
11010 | { | |
11011 | /* Finally update the new watchpoint. This creates the locations | |
11012 | that should be inserted. */ | |
3a5c3e22 | 11013 | update_watchpoint (w, 1); |
a9634178 TJB |
11014 | } |
11015 | if (e.reason < 0) | |
11016 | { | |
11017 | delete_breakpoint (b); | |
11018 | throw_exception (e); | |
11019 | } | |
11020 | ||
3ea46bff | 11021 | install_breakpoint (internal, b, 1); |
c906108c SS |
11022 | } |
11023 | ||
e09342b5 | 11024 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11025 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11026 | |
c906108c | 11027 | static int |
a9634178 | 11028 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11029 | { |
11030 | int found_memory_cnt = 0; | |
2e70b7b9 | 11031 | struct value *head = v; |
c906108c SS |
11032 | |
11033 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11034 | if (!can_use_hw_watchpoints) |
c906108c | 11035 | return 0; |
c5aa993b | 11036 | |
5c44784c JM |
11037 | /* Make sure that the value of the expression depends only upon |
11038 | memory contents, and values computed from them within GDB. If we | |
11039 | find any register references or function calls, we can't use a | |
11040 | hardware watchpoint. | |
11041 | ||
11042 | The idea here is that evaluating an expression generates a series | |
11043 | of values, one holding the value of every subexpression. (The | |
11044 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11045 | a*b+c.) GDB's values hold almost enough information to establish | |
11046 | the criteria given above --- they identify memory lvalues, | |
11047 | register lvalues, computed values, etcetera. So we can evaluate | |
11048 | the expression, and then scan the chain of values that leaves | |
11049 | behind to decide whether we can detect any possible change to the | |
11050 | expression's final value using only hardware watchpoints. | |
11051 | ||
11052 | However, I don't think that the values returned by inferior | |
11053 | function calls are special in any way. So this function may not | |
11054 | notice that an expression involving an inferior function call | |
11055 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11056 | for (; v; v = value_next (v)) |
c906108c | 11057 | { |
5c44784c | 11058 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11059 | { |
8464be76 DJ |
11060 | if (v != head && value_lazy (v)) |
11061 | /* A lazy memory lvalue in the chain is one that GDB never | |
11062 | needed to fetch; we either just used its address (e.g., | |
11063 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11064 | in `a,b'). This doesn't apply to HEAD; if that is | |
11065 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11066 | ; |
53a5351d | 11067 | else |
5c44784c JM |
11068 | { |
11069 | /* Ahh, memory we actually used! Check if we can cover | |
11070 | it with hardware watchpoints. */ | |
df407dfe | 11071 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11072 | |
11073 | /* We only watch structs and arrays if user asked for it | |
11074 | explicitly, never if they just happen to appear in a | |
11075 | middle of some value chain. */ | |
11076 | if (v == head | |
11077 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11078 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11079 | { | |
42ae5230 | 11080 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11081 | int len; |
11082 | int num_regs; | |
11083 | ||
a9634178 | 11084 | len = (target_exact_watchpoints |
e09342b5 TJB |
11085 | && is_scalar_type_recursive (vtype))? |
11086 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11087 | |
e09342b5 TJB |
11088 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11089 | if (!num_regs) | |
2e70b7b9 MS |
11090 | return 0; |
11091 | else | |
e09342b5 | 11092 | found_memory_cnt += num_regs; |
2e70b7b9 | 11093 | } |
5c44784c | 11094 | } |
c5aa993b | 11095 | } |
5086187c AC |
11096 | else if (VALUE_LVAL (v) != not_lval |
11097 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11098 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11099 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11100 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11101 | } |
11102 | ||
11103 | /* The expression itself looks suitable for using a hardware | |
11104 | watchpoint, but give the target machine a chance to reject it. */ | |
11105 | return found_memory_cnt; | |
11106 | } | |
11107 | ||
8b93c638 | 11108 | void |
84f4c1fe | 11109 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11110 | { |
84f4c1fe | 11111 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11112 | } |
11113 | ||
06a64a0b TT |
11114 | /* A helper function that looks for the "-location" argument and then |
11115 | calls watch_command_1. */ | |
11116 | ||
11117 | static void | |
11118 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11119 | { | |
11120 | int just_location = 0; | |
11121 | ||
11122 | if (arg | |
11123 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11124 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11125 | { | |
e9cafbcc | 11126 | arg = skip_spaces (arg); |
06a64a0b TT |
11127 | just_location = 1; |
11128 | } | |
11129 | ||
84f4c1fe | 11130 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11131 | } |
8926118c | 11132 | |
c5aa993b | 11133 | static void |
fba45db2 | 11134 | watch_command (char *arg, int from_tty) |
c906108c | 11135 | { |
06a64a0b | 11136 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11137 | } |
11138 | ||
8b93c638 | 11139 | void |
84f4c1fe | 11140 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11141 | { |
84f4c1fe | 11142 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11143 | } |
8926118c | 11144 | |
c5aa993b | 11145 | static void |
fba45db2 | 11146 | rwatch_command (char *arg, int from_tty) |
c906108c | 11147 | { |
06a64a0b | 11148 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11149 | } |
11150 | ||
8b93c638 | 11151 | void |
84f4c1fe | 11152 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11153 | { |
84f4c1fe | 11154 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11155 | } |
8926118c | 11156 | |
c5aa993b | 11157 | static void |
fba45db2 | 11158 | awatch_command (char *arg, int from_tty) |
c906108c | 11159 | { |
06a64a0b | 11160 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11161 | } |
c906108c | 11162 | \f |
c5aa993b | 11163 | |
43ff13b4 | 11164 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11165 | because it uses the mechanisms of breakpoints. */ |
11166 | ||
bfec99b2 PA |
11167 | struct until_break_command_continuation_args |
11168 | { | |
11169 | struct breakpoint *breakpoint; | |
11170 | struct breakpoint *breakpoint2; | |
186c406b | 11171 | int thread_num; |
bfec99b2 PA |
11172 | }; |
11173 | ||
43ff13b4 | 11174 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11175 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11176 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11177 | command. */ |
c2c6d25f | 11178 | static void |
fa4cd53f | 11179 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11180 | { |
bfec99b2 PA |
11181 | struct until_break_command_continuation_args *a = arg; |
11182 | ||
11183 | delete_breakpoint (a->breakpoint); | |
11184 | if (a->breakpoint2) | |
11185 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11186 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11187 | } |
11188 | ||
c906108c | 11189 | void |
ae66c1fc | 11190 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11191 | { |
11192 | struct symtabs_and_lines sals; | |
11193 | struct symtab_and_line sal; | |
8556afb4 PA |
11194 | struct frame_info *frame; |
11195 | struct gdbarch *frame_gdbarch; | |
11196 | struct frame_id stack_frame_id; | |
11197 | struct frame_id caller_frame_id; | |
c906108c | 11198 | struct breakpoint *breakpoint; |
f107f563 | 11199 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 11200 | struct cleanup *old_chain; |
186c406b TT |
11201 | int thread; |
11202 | struct thread_info *tp; | |
c906108c SS |
11203 | |
11204 | clear_proceed_status (); | |
11205 | ||
11206 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11207 | this function. */ |
c5aa993b | 11208 | |
1bfeeb0f | 11209 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 11210 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11211 | get_last_displayed_symtab (), |
f8eba3c6 | 11212 | get_last_displayed_line ()); |
c906108c | 11213 | else |
f8eba3c6 TT |
11214 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
11215 | (struct symtab *) NULL, 0); | |
c5aa993b | 11216 | |
c906108c | 11217 | if (sals.nelts != 1) |
8a3fe4f8 | 11218 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11219 | |
c906108c | 11220 | sal = sals.sals[0]; |
4a64f543 | 11221 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11222 | |
c906108c | 11223 | if (*arg) |
8a3fe4f8 | 11224 | error (_("Junk at end of arguments.")); |
c5aa993b | 11225 | |
c906108c | 11226 | resolve_sal_pc (&sal); |
c5aa993b | 11227 | |
186c406b TT |
11228 | tp = inferior_thread (); |
11229 | thread = tp->num; | |
11230 | ||
883bc8d1 PA |
11231 | old_chain = make_cleanup (null_cleanup, NULL); |
11232 | ||
8556afb4 PA |
11233 | /* Note linespec handling above invalidates the frame chain. |
11234 | Installing a breakpoint also invalidates the frame chain (as it | |
11235 | may need to switch threads), so do any frame handling before | |
11236 | that. */ | |
11237 | ||
11238 | frame = get_selected_frame (NULL); | |
11239 | frame_gdbarch = get_frame_arch (frame); | |
11240 | stack_frame_id = get_stack_frame_id (frame); | |
11241 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11242 | |
ae66c1fc EZ |
11243 | /* Keep within the current frame, or in frames called by the current |
11244 | one. */ | |
edb3359d | 11245 | |
883bc8d1 | 11246 | if (frame_id_p (caller_frame_id)) |
c906108c | 11247 | { |
883bc8d1 PA |
11248 | struct symtab_and_line sal2; |
11249 | ||
11250 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11251 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11252 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11253 | sal2, |
11254 | caller_frame_id, | |
f107f563 VP |
11255 | bp_until); |
11256 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11257 | |
883bc8d1 | 11258 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11259 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11260 | } |
c5aa993b | 11261 | |
c70a6932 JK |
11262 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11263 | frame = NULL; | |
11264 | ||
883bc8d1 PA |
11265 | if (anywhere) |
11266 | /* If the user told us to continue until a specified location, | |
11267 | we don't specify a frame at which we need to stop. */ | |
11268 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11269 | null_frame_id, bp_until); | |
11270 | else | |
11271 | /* Otherwise, specify the selected frame, because we want to stop | |
11272 | only at the very same frame. */ | |
11273 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11274 | stack_frame_id, bp_until); | |
11275 | make_cleanup_delete_breakpoint (breakpoint); | |
11276 | ||
a493e3e2 | 11277 | proceed (-1, GDB_SIGNAL_DEFAULT, 0); |
f107f563 | 11278 | |
4a64f543 MS |
11279 | /* If we are running asynchronously, and proceed call above has |
11280 | actually managed to start the target, arrange for breakpoints to | |
11281 | be deleted when the target stops. Otherwise, we're already | |
11282 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11283 | |
8ea051c5 | 11284 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11285 | { |
bfec99b2 PA |
11286 | struct until_break_command_continuation_args *args; |
11287 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11288 | |
bfec99b2 PA |
11289 | args->breakpoint = breakpoint; |
11290 | args->breakpoint2 = breakpoint2; | |
186c406b | 11291 | args->thread_num = thread; |
f107f563 VP |
11292 | |
11293 | discard_cleanups (old_chain); | |
95e54da7 PA |
11294 | add_continuation (inferior_thread (), |
11295 | until_break_command_continuation, args, | |
604ead4a | 11296 | xfree); |
f107f563 VP |
11297 | } |
11298 | else | |
c5aa993b | 11299 | do_cleanups (old_chain); |
c906108c | 11300 | } |
ae66c1fc | 11301 | |
c906108c SS |
11302 | /* This function attempts to parse an optional "if <cond>" clause |
11303 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11304 | |
c906108c SS |
11305 | Else, it returns a pointer to the condition string. (It does not |
11306 | attempt to evaluate the string against a particular block.) And, | |
11307 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11308 | if clause in the arg string. */ |
53a5351d | 11309 | |
c906108c | 11310 | static char * |
fba45db2 | 11311 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11312 | { |
c5aa993b JM |
11313 | char *cond_string; |
11314 | ||
11315 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11316 | return NULL; |
c5aa993b | 11317 | |
4a64f543 | 11318 | /* Skip the "if" keyword. */ |
c906108c | 11319 | (*arg) += 2; |
c5aa993b | 11320 | |
c906108c | 11321 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11322 | condition string. */ |
e9cafbcc | 11323 | *arg = skip_spaces (*arg); |
c906108c | 11324 | cond_string = *arg; |
c5aa993b | 11325 | |
4a64f543 MS |
11326 | /* Assume that the condition occupies the remainder of the arg |
11327 | string. */ | |
c906108c | 11328 | (*arg) += strlen (cond_string); |
c5aa993b | 11329 | |
c906108c SS |
11330 | return cond_string; |
11331 | } | |
c5aa993b | 11332 | |
c906108c SS |
11333 | /* Commands to deal with catching events, such as signals, exceptions, |
11334 | process start/exit, etc. */ | |
c5aa993b JM |
11335 | |
11336 | typedef enum | |
11337 | { | |
44feb3ce TT |
11338 | catch_fork_temporary, catch_vfork_temporary, |
11339 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11340 | } |
11341 | catch_fork_kind; | |
11342 | ||
c906108c | 11343 | static void |
cc59ec59 MS |
11344 | catch_fork_command_1 (char *arg, int from_tty, |
11345 | struct cmd_list_element *command) | |
c906108c | 11346 | { |
a6d9a66e | 11347 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11348 | char *cond_string = NULL; |
44feb3ce TT |
11349 | catch_fork_kind fork_kind; |
11350 | int tempflag; | |
11351 | ||
11352 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11353 | tempflag = (fork_kind == catch_fork_temporary | |
11354 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11355 | |
44feb3ce TT |
11356 | if (!arg) |
11357 | arg = ""; | |
e9cafbcc | 11358 | arg = skip_spaces (arg); |
c5aa993b | 11359 | |
c906108c | 11360 | /* The allowed syntax is: |
c5aa993b JM |
11361 | catch [v]fork |
11362 | catch [v]fork if <cond> | |
11363 | ||
4a64f543 | 11364 | First, check if there's an if clause. */ |
c906108c | 11365 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11366 | |
c906108c | 11367 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11368 | error (_("Junk at end of arguments.")); |
c5aa993b | 11369 | |
c906108c | 11370 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11371 | and enable reporting of such events. */ |
c5aa993b JM |
11372 | switch (fork_kind) |
11373 | { | |
44feb3ce TT |
11374 | case catch_fork_temporary: |
11375 | case catch_fork_permanent: | |
a6d9a66e | 11376 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11377 | &catch_fork_breakpoint_ops); |
c906108c | 11378 | break; |
44feb3ce TT |
11379 | case catch_vfork_temporary: |
11380 | case catch_vfork_permanent: | |
a6d9a66e | 11381 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11382 | &catch_vfork_breakpoint_ops); |
c906108c | 11383 | break; |
c5aa993b | 11384 | default: |
8a3fe4f8 | 11385 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11386 | break; |
c5aa993b | 11387 | } |
c906108c SS |
11388 | } |
11389 | ||
11390 | static void | |
cc59ec59 MS |
11391 | catch_exec_command_1 (char *arg, int from_tty, |
11392 | struct cmd_list_element *command) | |
c906108c | 11393 | { |
b4d90040 | 11394 | struct exec_catchpoint *c; |
a6d9a66e | 11395 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11396 | int tempflag; |
c5aa993b | 11397 | char *cond_string = NULL; |
c906108c | 11398 | |
44feb3ce TT |
11399 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11400 | ||
11401 | if (!arg) | |
11402 | arg = ""; | |
e9cafbcc | 11403 | arg = skip_spaces (arg); |
c906108c SS |
11404 | |
11405 | /* The allowed syntax is: | |
c5aa993b JM |
11406 | catch exec |
11407 | catch exec if <cond> | |
c906108c | 11408 | |
4a64f543 | 11409 | First, check if there's an if clause. */ |
c906108c SS |
11410 | cond_string = ep_parse_optional_if_clause (&arg); |
11411 | ||
11412 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11413 | error (_("Junk at end of arguments.")); |
c906108c | 11414 | |
b4d90040 PA |
11415 | c = XNEW (struct exec_catchpoint); |
11416 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11417 | &catch_exec_breakpoint_ops); | |
11418 | c->exec_pathname = NULL; | |
11419 | ||
3ea46bff | 11420 | install_breakpoint (0, &c->base, 1); |
c906108c | 11421 | } |
c5aa993b | 11422 | |
3086aeae | 11423 | static enum print_stop_action |
348d480f | 11424 | print_it_exception_catchpoint (bpstat bs) |
3086aeae | 11425 | { |
79a45e25 | 11426 | struct ui_out *uiout = current_uiout; |
348d480f | 11427 | struct breakpoint *b = bs->breakpoint_at; |
ade92717 | 11428 | int bp_temp, bp_throw; |
3086aeae | 11429 | |
ade92717 | 11430 | annotate_catchpoint (b->number); |
3086aeae | 11431 | |
ade92717 AR |
11432 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11433 | if (b->loc->address != b->loc->requested_address) | |
11434 | breakpoint_adjustment_warning (b->loc->requested_address, | |
11435 | b->loc->address, | |
11436 | b->number, 1); | |
df2b6d2d | 11437 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11438 | ui_out_text (uiout, |
11439 | bp_temp ? "Temporary catchpoint " | |
11440 | : "Catchpoint "); | |
11441 | if (!ui_out_is_mi_like_p (uiout)) | |
11442 | ui_out_field_int (uiout, "bkptno", b->number); | |
11443 | ui_out_text (uiout, | |
c0b37c48 AR |
11444 | bp_throw ? " (exception thrown), " |
11445 | : " (exception caught), "); | |
ade92717 AR |
11446 | if (ui_out_is_mi_like_p (uiout)) |
11447 | { | |
11448 | ui_out_field_string (uiout, "reason", | |
11449 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
11450 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
11451 | ui_out_field_int (uiout, "bkptno", b->number); | |
11452 | } | |
3086aeae DJ |
11453 | return PRINT_SRC_AND_LOC; |
11454 | } | |
11455 | ||
11456 | static void | |
cc59ec59 MS |
11457 | print_one_exception_catchpoint (struct breakpoint *b, |
11458 | struct bp_location **last_loc) | |
3086aeae | 11459 | { |
79a45b7d | 11460 | struct value_print_options opts; |
79a45e25 | 11461 | struct ui_out *uiout = current_uiout; |
cc59ec59 | 11462 | |
79a45b7d TT |
11463 | get_user_print_options (&opts); |
11464 | if (opts.addressprint) | |
3086aeae DJ |
11465 | { |
11466 | annotate_field (4); | |
604133b5 AR |
11467 | if (b->loc == NULL || b->loc->shlib_disabled) |
11468 | ui_out_field_string (uiout, "addr", "<PENDING>"); | |
11469 | else | |
5af949e3 UW |
11470 | ui_out_field_core_addr (uiout, "addr", |
11471 | b->loc->gdbarch, b->loc->address); | |
3086aeae DJ |
11472 | } |
11473 | annotate_field (5); | |
604133b5 | 11474 | if (b->loc) |
a6d9a66e | 11475 | *last_loc = b->loc; |
3086aeae DJ |
11476 | if (strstr (b->addr_string, "throw") != NULL) |
11477 | ui_out_field_string (uiout, "what", "exception throw"); | |
11478 | else | |
11479 | ui_out_field_string (uiout, "what", "exception catch"); | |
11480 | } | |
11481 | ||
11482 | static void | |
11483 | print_mention_exception_catchpoint (struct breakpoint *b) | |
11484 | { | |
79a45e25 | 11485 | struct ui_out *uiout = current_uiout; |
ade92717 AR |
11486 | int bp_temp; |
11487 | int bp_throw; | |
11488 | ||
df2b6d2d | 11489 | bp_temp = b->disposition == disp_del; |
ade92717 AR |
11490 | bp_throw = strstr (b->addr_string, "throw") != NULL; |
11491 | ui_out_text (uiout, bp_temp ? _("Temporary catchpoint ") | |
11492 | : _("Catchpoint ")); | |
11493 | ui_out_field_int (uiout, "bkptno", b->number); | |
11494 | ui_out_text (uiout, bp_throw ? _(" (throw)") | |
11495 | : _(" (catch)")); | |
3086aeae DJ |
11496 | } |
11497 | ||
6149aea9 PA |
11498 | /* Implement the "print_recreate" breakpoint_ops method for throw and |
11499 | catch catchpoints. */ | |
11500 | ||
11501 | static void | |
4a64f543 MS |
11502 | print_recreate_exception_catchpoint (struct breakpoint *b, |
11503 | struct ui_file *fp) | |
6149aea9 PA |
11504 | { |
11505 | int bp_temp; | |
11506 | int bp_throw; | |
11507 | ||
11508 | bp_temp = b->disposition == disp_del; | |
11509 | bp_throw = strstr (b->addr_string, "throw") != NULL; | |
11510 | fprintf_unfiltered (fp, bp_temp ? "tcatch " : "catch "); | |
11511 | fprintf_unfiltered (fp, bp_throw ? "throw" : "catch"); | |
d9b3f62e | 11512 | print_recreate_thread (b, fp); |
6149aea9 PA |
11513 | } |
11514 | ||
2060206e | 11515 | static struct breakpoint_ops gnu_v3_exception_catchpoint_ops; |
3086aeae DJ |
11516 | |
11517 | static int | |
11518 | handle_gnu_v3_exceptions (int tempflag, char *cond_string, | |
11519 | enum exception_event_kind ex_event, int from_tty) | |
11520 | { | |
604133b5 AR |
11521 | char *trigger_func_name; |
11522 | ||
3086aeae | 11523 | if (ex_event == EX_EVENT_CATCH) |
604133b5 | 11524 | trigger_func_name = "__cxa_begin_catch"; |
3086aeae | 11525 | else |
604133b5 | 11526 | trigger_func_name = "__cxa_throw"; |
3086aeae | 11527 | |
8cdf0e15 | 11528 | create_breakpoint (get_current_arch (), |
e7e0cddf | 11529 | trigger_func_name, cond_string, -1, NULL, |
8cdf0e15 | 11530 | 0 /* condition and thread are valid. */, |
0fb4aa4b | 11531 | tempflag, bp_breakpoint, |
8cdf0e15 VP |
11532 | 0, |
11533 | AUTO_BOOLEAN_TRUE /* pending */, | |
11534 | &gnu_v3_exception_catchpoint_ops, from_tty, | |
84f4c1fe | 11535 | 1 /* enabled */, |
44f238bb PA |
11536 | 0 /* internal */, |
11537 | 0); | |
3086aeae | 11538 | |
3086aeae DJ |
11539 | return 1; |
11540 | } | |
11541 | ||
4a64f543 | 11542 | /* Deal with "catch catch" and "catch throw" commands. */ |
c906108c SS |
11543 | |
11544 | static void | |
fba45db2 KB |
11545 | catch_exception_command_1 (enum exception_event_kind ex_event, char *arg, |
11546 | int tempflag, int from_tty) | |
c906108c | 11547 | { |
c5aa993b | 11548 | char *cond_string = NULL; |
c5aa993b | 11549 | |
44feb3ce TT |
11550 | if (!arg) |
11551 | arg = ""; | |
e9cafbcc | 11552 | arg = skip_spaces (arg); |
c5aa993b | 11553 | |
c906108c SS |
11554 | cond_string = ep_parse_optional_if_clause (&arg); |
11555 | ||
11556 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11557 | error (_("Junk at end of arguments.")); |
c906108c | 11558 | |
059fb39f PM |
11559 | if (ex_event != EX_EVENT_THROW |
11560 | && ex_event != EX_EVENT_CATCH) | |
8a3fe4f8 | 11561 | error (_("Unsupported or unknown exception event; cannot catch it")); |
c906108c | 11562 | |
3086aeae DJ |
11563 | if (handle_gnu_v3_exceptions (tempflag, cond_string, ex_event, from_tty)) |
11564 | return; | |
11565 | ||
8a3fe4f8 | 11566 | warning (_("Unsupported with this platform/compiler combination.")); |
c906108c SS |
11567 | } |
11568 | ||
44feb3ce TT |
11569 | /* Implementation of "catch catch" command. */ |
11570 | ||
11571 | static void | |
11572 | catch_catch_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11573 | { | |
11574 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11575 | |
44feb3ce TT |
11576 | catch_exception_command_1 (EX_EVENT_CATCH, arg, tempflag, from_tty); |
11577 | } | |
11578 | ||
11579 | /* Implementation of "catch throw" command. */ | |
11580 | ||
11581 | static void | |
11582 | catch_throw_command (char *arg, int from_tty, struct cmd_list_element *command) | |
11583 | { | |
11584 | int tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
cc59ec59 | 11585 | |
44feb3ce TT |
11586 | catch_exception_command_1 (EX_EVENT_THROW, arg, tempflag, from_tty); |
11587 | } | |
11588 | ||
9ac4176b | 11589 | void |
28010a5d PA |
11590 | init_ada_exception_breakpoint (struct breakpoint *b, |
11591 | struct gdbarch *gdbarch, | |
11592 | struct symtab_and_line sal, | |
11593 | char *addr_string, | |
c0a91b2b | 11594 | const struct breakpoint_ops *ops, |
28010a5d PA |
11595 | int tempflag, |
11596 | int from_tty) | |
f7f9143b | 11597 | { |
f7f9143b JB |
11598 | if (from_tty) |
11599 | { | |
5af949e3 UW |
11600 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11601 | if (!loc_gdbarch) | |
11602 | loc_gdbarch = gdbarch; | |
11603 | ||
6c95b8df PA |
11604 | describe_other_breakpoints (loc_gdbarch, |
11605 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11606 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11607 | version for exception catchpoints, because two catchpoints | |
11608 | used for different exception names will use the same address. | |
11609 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11610 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11611 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11612 | the user what type of catchpoint it is. The above is good |
11613 | enough for now, though. */ | |
11614 | } | |
11615 | ||
28010a5d | 11616 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
11617 | |
11618 | b->enable_state = bp_enabled; | |
11619 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
11620 | b->addr_string = addr_string; |
11621 | b->language = language_ada; | |
f7f9143b JB |
11622 | } |
11623 | ||
a96d9b2e SDJ |
11624 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
11625 | filter list, or NULL if no filtering is required. */ | |
11626 | static VEC(int) * | |
11627 | catch_syscall_split_args (char *arg) | |
11628 | { | |
11629 | VEC(int) *result = NULL; | |
29d0bb3d | 11630 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
11631 | |
11632 | while (*arg != '\0') | |
11633 | { | |
11634 | int i, syscall_number; | |
11635 | char *endptr; | |
11636 | char cur_name[128]; | |
11637 | struct syscall s; | |
11638 | ||
11639 | /* Skip whitespace. */ | |
11640 | while (isspace (*arg)) | |
11641 | arg++; | |
11642 | ||
11643 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
11644 | cur_name[i] = arg[i]; | |
11645 | cur_name[i] = '\0'; | |
11646 | arg += i; | |
11647 | ||
11648 | /* Check if the user provided a syscall name or a number. */ | |
11649 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
11650 | if (*endptr == '\0') | |
bccd0dd2 | 11651 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
11652 | else |
11653 | { | |
11654 | /* We have a name. Let's check if it's valid and convert it | |
11655 | to a number. */ | |
11656 | get_syscall_by_name (cur_name, &s); | |
11657 | ||
11658 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
11659 | /* Here we have to issue an error instead of a warning, |
11660 | because GDB cannot do anything useful if there's no | |
11661 | syscall number to be caught. */ | |
a96d9b2e SDJ |
11662 | error (_("Unknown syscall name '%s'."), cur_name); |
11663 | } | |
11664 | ||
11665 | /* Ok, it's valid. */ | |
11666 | VEC_safe_push (int, result, s.number); | |
11667 | } | |
11668 | ||
11669 | discard_cleanups (cleanup); | |
11670 | return result; | |
11671 | } | |
11672 | ||
11673 | /* Implement the "catch syscall" command. */ | |
11674 | ||
11675 | static void | |
cc59ec59 MS |
11676 | catch_syscall_command_1 (char *arg, int from_tty, |
11677 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
11678 | { |
11679 | int tempflag; | |
11680 | VEC(int) *filter; | |
11681 | struct syscall s; | |
11682 | struct gdbarch *gdbarch = get_current_arch (); | |
11683 | ||
11684 | /* Checking if the feature if supported. */ | |
11685 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
11686 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 11687 | this architecture yet.")); |
a96d9b2e SDJ |
11688 | |
11689 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
11690 | ||
e9cafbcc | 11691 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11692 | |
11693 | /* We need to do this first "dummy" translation in order | |
11694 | to get the syscall XML file loaded or, most important, | |
11695 | to display a warning to the user if there's no XML file | |
11696 | for his/her architecture. */ | |
11697 | get_syscall_by_number (0, &s); | |
11698 | ||
11699 | /* The allowed syntax is: | |
11700 | catch syscall | |
11701 | catch syscall <name | number> [<name | number> ... <name | number>] | |
11702 | ||
11703 | Let's check if there's a syscall name. */ | |
11704 | ||
11705 | if (arg != NULL) | |
11706 | filter = catch_syscall_split_args (arg); | |
11707 | else | |
11708 | filter = NULL; | |
11709 | ||
11710 | create_syscall_event_catchpoint (tempflag, filter, | |
11711 | &catch_syscall_breakpoint_ops); | |
11712 | } | |
11713 | ||
c906108c | 11714 | static void |
fba45db2 | 11715 | catch_command (char *arg, int from_tty) |
c906108c | 11716 | { |
44feb3ce | 11717 | error (_("Catch requires an event name.")); |
c906108c SS |
11718 | } |
11719 | \f | |
11720 | ||
11721 | static void | |
fba45db2 | 11722 | tcatch_command (char *arg, int from_tty) |
c906108c | 11723 | { |
44feb3ce | 11724 | error (_("Catch requires an event name.")); |
c906108c SS |
11725 | } |
11726 | ||
8a2c437b TT |
11727 | /* A qsort comparison function that sorts breakpoints in order. */ |
11728 | ||
11729 | static int | |
11730 | compare_breakpoints (const void *a, const void *b) | |
11731 | { | |
11732 | const breakpoint_p *ba = a; | |
11733 | uintptr_t ua = (uintptr_t) *ba; | |
11734 | const breakpoint_p *bb = b; | |
11735 | uintptr_t ub = (uintptr_t) *bb; | |
11736 | ||
11737 | if ((*ba)->number < (*bb)->number) | |
11738 | return -1; | |
11739 | else if ((*ba)->number > (*bb)->number) | |
11740 | return 1; | |
11741 | ||
11742 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11743 | the number 0. */ | |
11744 | if (ua < ub) | |
11745 | return -1; | |
11746 | return ub > ub ? 1 : 0; | |
11747 | } | |
11748 | ||
80f8a6eb | 11749 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11750 | |
11751 | static void | |
fba45db2 | 11752 | clear_command (char *arg, int from_tty) |
c906108c | 11753 | { |
8a2c437b | 11754 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11755 | VEC(breakpoint_p) *found = 0; |
11756 | int ix; | |
c906108c SS |
11757 | int default_match; |
11758 | struct symtabs_and_lines sals; | |
11759 | struct symtab_and_line sal; | |
c906108c | 11760 | int i; |
8a2c437b | 11761 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11762 | |
11763 | if (arg) | |
11764 | { | |
39cf75f7 DE |
11765 | sals = decode_line_with_current_source (arg, |
11766 | (DECODE_LINE_FUNFIRSTLINE | |
11767 | | DECODE_LINE_LIST_MODE)); | |
c906108c SS |
11768 | default_match = 0; |
11769 | } | |
11770 | else | |
11771 | { | |
c5aa993b | 11772 | sals.sals = (struct symtab_and_line *) |
c906108c | 11773 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11774 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11775 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11776 | |
11777 | /* Set sal's line, symtab, pc, and pspace to the values | |
11778 | corresponding to the last call to print_frame_info. If the | |
11779 | codepoint is not valid, this will set all the fields to 0. */ | |
11780 | get_last_displayed_sal (&sal); | |
c906108c | 11781 | if (sal.symtab == 0) |
8a3fe4f8 | 11782 | error (_("No source file specified.")); |
c906108c SS |
11783 | |
11784 | sals.sals[0] = sal; | |
11785 | sals.nelts = 1; | |
11786 | ||
11787 | default_match = 1; | |
11788 | } | |
11789 | ||
4a64f543 MS |
11790 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11791 | seems, because all existing breakpoints typically have both | |
11792 | file/line and pc set. So, if clear is given file/line, we can | |
11793 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11794 | |
11795 | We only support clearing given the address explicitly | |
11796 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11797 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11798 | due to optimization, all in one block. |
4a64f543 MS |
11799 | |
11800 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11801 | PC corresponding to the same file:line, the breakpoint won't |
11802 | be cleared. We probably can still clear the breakpoint, but | |
11803 | since the other PC value is never presented to user, user | |
11804 | can only find it by guessing, and it does not seem important | |
11805 | to support that. */ | |
11806 | ||
4a64f543 MS |
11807 | /* For each line spec given, delete bps which correspond to it. Do |
11808 | it in two passes, solely to preserve the current behavior that | |
11809 | from_tty is forced true if we delete more than one | |
11810 | breakpoint. */ | |
c906108c | 11811 | |
80f8a6eb | 11812 | found = NULL; |
8a2c437b | 11813 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11814 | for (i = 0; i < sals.nelts; i++) |
11815 | { | |
4aac40c8 TT |
11816 | int is_abs, sal_name_len; |
11817 | ||
c906108c | 11818 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11819 | If line given (pc == 0), clear all bpts on specified line. |
11820 | If defaulting, clear all bpts on default line | |
c906108c | 11821 | or at default pc. |
c5aa993b JM |
11822 | |
11823 | defaulting sal.pc != 0 tests to do | |
11824 | ||
11825 | 0 1 pc | |
11826 | 1 1 pc _and_ line | |
11827 | 0 0 line | |
11828 | 1 0 <can't happen> */ | |
c906108c SS |
11829 | |
11830 | sal = sals.sals[i]; | |
4aac40c8 TT |
11831 | is_abs = sal.symtab == NULL ? 1 : IS_ABSOLUTE_PATH (sal.symtab->filename); |
11832 | sal_name_len = is_abs ? 0 : strlen (sal.symtab->filename); | |
c906108c | 11833 | |
4a64f543 | 11834 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11835 | ALL_BREAKPOINTS (b) |
c5aa993b | 11836 | { |
0d381245 | 11837 | int match = 0; |
4a64f543 | 11838 | /* Are we going to delete b? */ |
cc60f2e3 | 11839 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11840 | { |
11841 | struct bp_location *loc = b->loc; | |
11842 | for (; loc; loc = loc->next) | |
11843 | { | |
f8eba3c6 TT |
11844 | /* If the user specified file:line, don't allow a PC |
11845 | match. This matches historical gdb behavior. */ | |
11846 | int pc_match = (!sal.explicit_line | |
11847 | && sal.pc | |
11848 | && (loc->pspace == sal.pspace) | |
11849 | && (loc->address == sal.pc) | |
11850 | && (!section_is_overlay (loc->section) | |
11851 | || loc->section == sal.section)); | |
4aac40c8 TT |
11852 | int line_match = 0; |
11853 | ||
11854 | if ((default_match || sal.explicit_line) | |
11855 | && loc->source_file != NULL | |
11856 | && sal.symtab != NULL | |
11857 | && sal.pspace == loc->pspace | |
11858 | && loc->line_number == sal.line) | |
11859 | { | |
11860 | if (filename_cmp (loc->source_file, | |
11861 | sal.symtab->filename) == 0) | |
11862 | line_match = 1; | |
11863 | else if (!IS_ABSOLUTE_PATH (sal.symtab->filename) | |
11864 | && compare_filenames_for_search (loc->source_file, | |
11865 | sal.symtab->filename, | |
11866 | sal_name_len)) | |
11867 | line_match = 1; | |
11868 | } | |
11869 | ||
0d381245 VP |
11870 | if (pc_match || line_match) |
11871 | { | |
11872 | match = 1; | |
11873 | break; | |
11874 | } | |
11875 | } | |
11876 | } | |
11877 | ||
11878 | if (match) | |
d6e956e5 | 11879 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11880 | } |
80f8a6eb | 11881 | } |
8a2c437b | 11882 | |
80f8a6eb | 11883 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11884 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11885 | { |
11886 | if (arg) | |
8a3fe4f8 | 11887 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11888 | else |
8a3fe4f8 | 11889 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11890 | } |
c906108c | 11891 | |
8a2c437b TT |
11892 | /* Remove duplicates from the vec. */ |
11893 | qsort (VEC_address (breakpoint_p, found), | |
11894 | VEC_length (breakpoint_p, found), | |
11895 | sizeof (breakpoint_p), | |
11896 | compare_breakpoints); | |
11897 | prev = VEC_index (breakpoint_p, found, 0); | |
11898 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11899 | { | |
11900 | if (b == prev) | |
11901 | { | |
11902 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11903 | --ix; | |
11904 | } | |
11905 | } | |
11906 | ||
d6e956e5 | 11907 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11908 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11909 | if (from_tty) |
a3f17187 | 11910 | { |
d6e956e5 | 11911 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11912 | printf_unfiltered (_("Deleted breakpoint ")); |
11913 | else | |
11914 | printf_unfiltered (_("Deleted breakpoints ")); | |
11915 | } | |
80f8a6eb | 11916 | breakpoints_changed (); |
d6e956e5 VP |
11917 | |
11918 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11919 | { |
c5aa993b | 11920 | if (from_tty) |
d6e956e5 VP |
11921 | printf_unfiltered ("%d ", b->number); |
11922 | delete_breakpoint (b); | |
c906108c | 11923 | } |
80f8a6eb MS |
11924 | if (from_tty) |
11925 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11926 | |
11927 | do_cleanups (cleanups); | |
c906108c SS |
11928 | } |
11929 | \f | |
11930 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11931 | all breakpoints that are marked for deletion, whether hit or not. | |
11932 | This is called after any breakpoint is hit, or after errors. */ | |
11933 | ||
11934 | void | |
fba45db2 | 11935 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11936 | { |
35df4500 | 11937 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11938 | |
11939 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11940 | if (bs->breakpoint_at |
11941 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11942 | && bs->stop) |
f431efe5 | 11943 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11944 | |
35df4500 | 11945 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11946 | { |
b5de0fa7 | 11947 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11948 | delete_breakpoint (b); |
11949 | } | |
c906108c SS |
11950 | } |
11951 | ||
4a64f543 MS |
11952 | /* A comparison function for bp_location AP and BP being interfaced to |
11953 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11954 | does breakpoint_address_is_meaningful say for its OWNER), | |
11955 | secondarily by ordering first bp_permanent OWNERed elements and | |
11956 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 11957 | qsort being an unstable algorithm. */ |
876fa593 JK |
11958 | |
11959 | static int | |
494cfb0f | 11960 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 11961 | { |
494cfb0f JK |
11962 | struct bp_location *a = *(void **) ap; |
11963 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 11964 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
11965 | int a_perm = a->owner->enable_state == bp_permanent; |
11966 | int b_perm = b->owner->enable_state == bp_permanent; | |
11967 | ||
11968 | if (a->address != b->address) | |
11969 | return (a->address > b->address) - (a->address < b->address); | |
11970 | ||
dea2aa5f LM |
11971 | /* Sort locations at the same address by their pspace number, keeping |
11972 | locations of the same inferior (in a multi-inferior environment) | |
11973 | grouped. */ | |
11974 | ||
11975 | if (a->pspace->num != b->pspace->num) | |
11976 | return ((a->pspace->num > b->pspace->num) | |
11977 | - (a->pspace->num < b->pspace->num)); | |
11978 | ||
876fa593 JK |
11979 | /* Sort permanent breakpoints first. */ |
11980 | if (a_perm != b_perm) | |
11981 | return (a_perm < b_perm) - (a_perm > b_perm); | |
11982 | ||
c56a97f9 JK |
11983 | /* Make the internal GDB representation stable across GDB runs |
11984 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11985 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11986 | |
11987 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11988 | return ((a->owner->number > b->owner->number) |
11989 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11990 | |
11991 | return (a > b) - (a < b); | |
11992 | } | |
11993 | ||
876fa593 | 11994 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
11995 | bp_location_shadow_len_after_address_max according to the current |
11996 | content of the bp_location array. */ | |
f7545552 TT |
11997 | |
11998 | static void | |
876fa593 | 11999 | bp_location_target_extensions_update (void) |
f7545552 | 12000 | { |
876fa593 JK |
12001 | struct bp_location *bl, **blp_tmp; |
12002 | ||
12003 | bp_location_placed_address_before_address_max = 0; | |
12004 | bp_location_shadow_len_after_address_max = 0; | |
12005 | ||
12006 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12007 | { | |
12008 | CORE_ADDR start, end, addr; | |
12009 | ||
12010 | if (!bp_location_has_shadow (bl)) | |
12011 | continue; | |
12012 | ||
12013 | start = bl->target_info.placed_address; | |
12014 | end = start + bl->target_info.shadow_len; | |
12015 | ||
12016 | gdb_assert (bl->address >= start); | |
12017 | addr = bl->address - start; | |
12018 | if (addr > bp_location_placed_address_before_address_max) | |
12019 | bp_location_placed_address_before_address_max = addr; | |
12020 | ||
12021 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
12022 | ||
12023 | gdb_assert (bl->address < end); | |
12024 | addr = end - bl->address; | |
12025 | if (addr > bp_location_shadow_len_after_address_max) | |
12026 | bp_location_shadow_len_after_address_max = addr; | |
12027 | } | |
f7545552 TT |
12028 | } |
12029 | ||
1e4d1764 YQ |
12030 | /* Download tracepoint locations if they haven't been. */ |
12031 | ||
12032 | static void | |
12033 | download_tracepoint_locations (void) | |
12034 | { | |
12035 | struct bp_location *bl, **blp_tmp; | |
12036 | struct cleanup *old_chain; | |
12037 | ||
12038 | if (!target_can_download_tracepoint ()) | |
12039 | return; | |
12040 | ||
12041 | old_chain = save_current_space_and_thread (); | |
12042 | ||
12043 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
12044 | { | |
12045 | struct tracepoint *t; | |
12046 | ||
12047 | if (!is_tracepoint (bl->owner)) | |
12048 | continue; | |
12049 | ||
12050 | if ((bl->owner->type == bp_fast_tracepoint | |
12051 | ? !may_insert_fast_tracepoints | |
12052 | : !may_insert_tracepoints)) | |
12053 | continue; | |
12054 | ||
12055 | /* In tracepoint, locations are _never_ duplicated, so | |
12056 | should_be_inserted is equivalent to | |
12057 | unduplicated_should_be_inserted. */ | |
12058 | if (!should_be_inserted (bl) || bl->inserted) | |
12059 | continue; | |
12060 | ||
12061 | switch_to_program_space_and_thread (bl->pspace); | |
12062 | ||
12063 | target_download_tracepoint (bl); | |
12064 | ||
12065 | bl->inserted = 1; | |
12066 | t = (struct tracepoint *) bl->owner; | |
12067 | t->number_on_target = bl->owner->number; | |
12068 | } | |
12069 | ||
12070 | do_cleanups (old_chain); | |
12071 | } | |
12072 | ||
934709f0 PW |
12073 | /* Swap the insertion/duplication state between two locations. */ |
12074 | ||
12075 | static void | |
12076 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12077 | { | |
12078 | const int left_inserted = left->inserted; | |
12079 | const int left_duplicate = left->duplicate; | |
b775012e | 12080 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12081 | const struct bp_target_info left_target_info = left->target_info; |
12082 | ||
1e4d1764 YQ |
12083 | /* Locations of tracepoints can never be duplicated. */ |
12084 | if (is_tracepoint (left->owner)) | |
12085 | gdb_assert (!left->duplicate); | |
12086 | if (is_tracepoint (right->owner)) | |
12087 | gdb_assert (!right->duplicate); | |
12088 | ||
934709f0 PW |
12089 | left->inserted = right->inserted; |
12090 | left->duplicate = right->duplicate; | |
b775012e | 12091 | left->needs_update = right->needs_update; |
934709f0 PW |
12092 | left->target_info = right->target_info; |
12093 | right->inserted = left_inserted; | |
12094 | right->duplicate = left_duplicate; | |
b775012e | 12095 | right->needs_update = left_needs_update; |
934709f0 PW |
12096 | right->target_info = left_target_info; |
12097 | } | |
12098 | ||
b775012e LM |
12099 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12100 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12101 | conditions on the target's side. Such conditions need to be updated on | |
12102 | the target. */ | |
12103 | ||
12104 | static void | |
12105 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12106 | { | |
12107 | struct bp_location **locp = NULL, **loc2p; | |
12108 | struct bp_location *loc; | |
12109 | CORE_ADDR address = 0; | |
12110 | int pspace_num; | |
12111 | ||
12112 | address = bl->address; | |
12113 | pspace_num = bl->pspace->num; | |
12114 | ||
12115 | /* This is only meaningful if the target is | |
12116 | evaluating conditions and if the user has | |
12117 | opted for condition evaluation on the target's | |
12118 | side. */ | |
12119 | if (gdb_evaluates_breakpoint_condition_p () | |
12120 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12121 | return; | |
12122 | ||
12123 | /* Flag all breakpoint locations with this address and | |
12124 | the same program space as the location | |
12125 | as "its condition has changed". We need to | |
12126 | update the conditions on the target's side. */ | |
12127 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12128 | { | |
12129 | loc = *loc2p; | |
12130 | ||
12131 | if (!is_breakpoint (loc->owner) | |
12132 | || pspace_num != loc->pspace->num) | |
12133 | continue; | |
12134 | ||
12135 | /* Flag the location appropriately. We use a different state to | |
12136 | let everyone know that we already updated the set of locations | |
12137 | with addr bl->address and program space bl->pspace. This is so | |
12138 | we don't have to keep calling these functions just to mark locations | |
12139 | that have already been marked. */ | |
12140 | loc->condition_changed = condition_updated; | |
12141 | ||
12142 | /* Free the agent expression bytecode as well. We will compute | |
12143 | it later on. */ | |
12144 | if (loc->cond_bytecode) | |
12145 | { | |
12146 | free_agent_expr (loc->cond_bytecode); | |
12147 | loc->cond_bytecode = NULL; | |
12148 | } | |
12149 | } | |
12150 | } | |
12151 | ||
4cd9bd08 | 12152 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
12153 | into the inferior, only remove already-inserted locations that no |
12154 | longer should be inserted. Functions that delete a breakpoint or | |
12155 | breakpoints should pass false, so that deleting a breakpoint | |
12156 | doesn't have the side effect of inserting the locations of other | |
12157 | breakpoints that are marked not-inserted, but should_be_inserted | |
12158 | returns true on them. | |
12159 | ||
12160 | This behaviour is useful is situations close to tear-down -- e.g., | |
12161 | after an exec, while the target still has execution, but breakpoint | |
12162 | shadows of the previous executable image should *NOT* be restored | |
12163 | to the new image; or before detaching, where the target still has | |
12164 | execution and wants to delete breakpoints from GDB's lists, and all | |
12165 | breakpoints had already been removed from the inferior. */ | |
12166 | ||
0d381245 | 12167 | static void |
b60e7edf | 12168 | update_global_location_list (int should_insert) |
0d381245 | 12169 | { |
74960c60 | 12170 | struct breakpoint *b; |
876fa593 | 12171 | struct bp_location **locp, *loc; |
f7545552 | 12172 | struct cleanup *cleanups; |
b775012e LM |
12173 | /* Last breakpoint location address that was marked for update. */ |
12174 | CORE_ADDR last_addr = 0; | |
12175 | /* Last breakpoint location program space that was marked for update. */ | |
12176 | int last_pspace_num = -1; | |
f7545552 | 12177 | |
2d134ed3 PA |
12178 | /* Used in the duplicates detection below. When iterating over all |
12179 | bp_locations, points to the first bp_location of a given address. | |
12180 | Breakpoints and watchpoints of different types are never | |
12181 | duplicates of each other. Keep one pointer for each type of | |
12182 | breakpoint/watchpoint, so we only need to loop over all locations | |
12183 | once. */ | |
12184 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12185 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12186 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12187 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12188 | |
4a64f543 MS |
12189 | /* Saved former bp_location array which we compare against the newly |
12190 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12191 | struct bp_location **old_location, **old_locp; |
12192 | unsigned old_location_count; | |
12193 | ||
12194 | old_location = bp_location; | |
12195 | old_location_count = bp_location_count; | |
12196 | bp_location = NULL; | |
12197 | bp_location_count = 0; | |
12198 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12199 | |
74960c60 | 12200 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12201 | for (loc = b->loc; loc; loc = loc->next) |
12202 | bp_location_count++; | |
12203 | ||
12204 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12205 | locp = bp_location; | |
12206 | ALL_BREAKPOINTS (b) | |
12207 | for (loc = b->loc; loc; loc = loc->next) | |
12208 | *locp++ = loc; | |
12209 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12210 | bp_location_compare); |
876fa593 JK |
12211 | |
12212 | bp_location_target_extensions_update (); | |
74960c60 | 12213 | |
4a64f543 MS |
12214 | /* Identify bp_location instances that are no longer present in the |
12215 | new list, and therefore should be freed. Note that it's not | |
12216 | necessary that those locations should be removed from inferior -- | |
12217 | if there's another location at the same address (previously | |
12218 | marked as duplicate), we don't need to remove/insert the | |
12219 | location. | |
876fa593 | 12220 | |
4a64f543 MS |
12221 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12222 | and former bp_location array state respectively. */ | |
876fa593 JK |
12223 | |
12224 | locp = bp_location; | |
12225 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12226 | old_locp++) | |
74960c60 | 12227 | { |
876fa593 | 12228 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12229 | struct bp_location **loc2p; |
876fa593 | 12230 | |
e5dd4106 | 12231 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12232 | not, we have to free it. */ |
c7d46a38 | 12233 | int found_object = 0; |
20874c92 VP |
12234 | /* Tells if the location should remain inserted in the target. */ |
12235 | int keep_in_target = 0; | |
12236 | int removed = 0; | |
876fa593 | 12237 | |
4a64f543 MS |
12238 | /* Skip LOCP entries which will definitely never be needed. |
12239 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12240 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12241 | && (*locp)->address < old_loc->address) |
876fa593 | 12242 | locp++; |
c7d46a38 PA |
12243 | |
12244 | for (loc2p = locp; | |
12245 | (loc2p < bp_location + bp_location_count | |
12246 | && (*loc2p)->address == old_loc->address); | |
12247 | loc2p++) | |
12248 | { | |
b775012e LM |
12249 | /* Check if this is a new/duplicated location or a duplicated |
12250 | location that had its condition modified. If so, we want to send | |
12251 | its condition to the target if evaluation of conditions is taking | |
12252 | place there. */ | |
12253 | if ((*loc2p)->condition_changed == condition_modified | |
12254 | && (last_addr != old_loc->address | |
12255 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12256 | { |
b775012e LM |
12257 | force_breakpoint_reinsertion (*loc2p); |
12258 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12259 | } |
b775012e LM |
12260 | |
12261 | if (*loc2p == old_loc) | |
12262 | found_object = 1; | |
c7d46a38 | 12263 | } |
74960c60 | 12264 | |
b775012e LM |
12265 | /* We have already handled this address, update it so that we don't |
12266 | have to go through updates again. */ | |
12267 | last_addr = old_loc->address; | |
12268 | ||
12269 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12270 | if (!found_object) | |
12271 | force_breakpoint_reinsertion (old_loc); | |
12272 | ||
4a64f543 MS |
12273 | /* If this location is no longer present, and inserted, look if |
12274 | there's maybe a new location at the same address. If so, | |
12275 | mark that one inserted, and don't remove this one. This is | |
12276 | needed so that we don't have a time window where a breakpoint | |
12277 | at certain location is not inserted. */ | |
74960c60 | 12278 | |
876fa593 | 12279 | if (old_loc->inserted) |
0d381245 | 12280 | { |
4a64f543 MS |
12281 | /* If the location is inserted now, we might have to remove |
12282 | it. */ | |
74960c60 | 12283 | |
876fa593 | 12284 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12285 | { |
4a64f543 MS |
12286 | /* The location is still present in the location list, |
12287 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12288 | keep_in_target = 1; |
74960c60 VP |
12289 | } |
12290 | else | |
12291 | { | |
b775012e LM |
12292 | /* This location still exists, but it won't be kept in the |
12293 | target since it may have been disabled. We proceed to | |
12294 | remove its target-side condition. */ | |
12295 | ||
4a64f543 MS |
12296 | /* The location is either no longer present, or got |
12297 | disabled. See if there's another location at the | |
12298 | same address, in which case we don't need to remove | |
12299 | this one from the target. */ | |
876fa593 | 12300 | |
2bdf28a0 | 12301 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12302 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12303 | { | |
876fa593 | 12304 | for (loc2p = locp; |
c7d46a38 PA |
12305 | (loc2p < bp_location + bp_location_count |
12306 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12307 | loc2p++) |
12308 | { | |
12309 | struct bp_location *loc2 = *loc2p; | |
12310 | ||
2d134ed3 | 12311 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12312 | { |
85d721b8 PA |
12313 | /* Read watchpoint locations are switched to |
12314 | access watchpoints, if the former are not | |
12315 | supported, but the latter are. */ | |
12316 | if (is_hardware_watchpoint (old_loc->owner)) | |
12317 | { | |
12318 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12319 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12320 | } | |
12321 | ||
934709f0 PW |
12322 | /* loc2 is a duplicated location. We need to check |
12323 | if it should be inserted in case it will be | |
12324 | unduplicated. */ | |
12325 | if (loc2 != old_loc | |
12326 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12327 | { |
934709f0 | 12328 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12329 | keep_in_target = 1; |
12330 | break; | |
12331 | } | |
876fa593 JK |
12332 | } |
12333 | } | |
12334 | } | |
74960c60 VP |
12335 | } |
12336 | ||
20874c92 VP |
12337 | if (!keep_in_target) |
12338 | { | |
876fa593 | 12339 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12340 | { |
4a64f543 MS |
12341 | /* This is just about all we can do. We could keep |
12342 | this location on the global list, and try to | |
12343 | remove it next time, but there's no particular | |
12344 | reason why we will succeed next time. | |
20874c92 | 12345 | |
4a64f543 MS |
12346 | Note that at this point, old_loc->owner is still |
12347 | valid, as delete_breakpoint frees the breakpoint | |
12348 | only after calling us. */ | |
3e43a32a MS |
12349 | printf_filtered (_("warning: Error removing " |
12350 | "breakpoint %d\n"), | |
876fa593 | 12351 | old_loc->owner->number); |
20874c92 VP |
12352 | } |
12353 | removed = 1; | |
12354 | } | |
0d381245 | 12355 | } |
74960c60 VP |
12356 | |
12357 | if (!found_object) | |
1c5cfe86 | 12358 | { |
db82e815 PA |
12359 | if (removed && non_stop |
12360 | && breakpoint_address_is_meaningful (old_loc->owner) | |
12361 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 12362 | { |
db82e815 PA |
12363 | /* This location was removed from the target. In |
12364 | non-stop mode, a race condition is possible where | |
12365 | we've removed a breakpoint, but stop events for that | |
12366 | breakpoint are already queued and will arrive later. | |
12367 | We apply an heuristic to be able to distinguish such | |
12368 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12369 | breakpoint location for a bit, and will retire it | |
12370 | after we see some number of events. The theory here | |
12371 | is that reporting of events should, "on the average", | |
12372 | be fair, so after a while we'll see events from all | |
12373 | threads that have anything of interest, and no longer | |
12374 | need to keep this breakpoint location around. We | |
12375 | don't hold locations forever so to reduce chances of | |
12376 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12377 | SIGTRAP. | |
12378 | ||
12379 | The heuristic failing can be disastrous on | |
12380 | decr_pc_after_break targets. | |
12381 | ||
12382 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12383 | if we fail to recognize a late breakpoint SIGTRAP, | |
12384 | because events_till_retirement has reached 0 too | |
12385 | soon, we'll fail to do the PC adjustment, and report | |
12386 | a random SIGTRAP to the user. When the user resumes | |
12387 | the inferior, it will most likely immediately crash | |
2dec564e | 12388 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12389 | corrupted, because of being resumed e.g., in the |
12390 | middle of a multi-byte instruction, or skipped a | |
12391 | one-byte instruction. This was actually seen happen | |
12392 | on native x86-linux, and should be less rare on | |
12393 | targets that do not support new thread events, like | |
12394 | remote, due to the heuristic depending on | |
12395 | thread_count. | |
12396 | ||
12397 | Mistaking a random SIGTRAP for a breakpoint trap | |
12398 | causes similar symptoms (PC adjustment applied when | |
12399 | it shouldn't), but then again, playing with SIGTRAPs | |
12400 | behind the debugger's back is asking for trouble. | |
12401 | ||
12402 | Since hardware watchpoint traps are always | |
12403 | distinguishable from other traps, so we don't need to | |
12404 | apply keep hardware watchpoint moribund locations | |
12405 | around. We simply always ignore hardware watchpoint | |
12406 | traps we can no longer explain. */ | |
12407 | ||
876fa593 JK |
12408 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12409 | old_loc->owner = NULL; | |
20874c92 | 12410 | |
876fa593 | 12411 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12412 | } |
12413 | else | |
f431efe5 PA |
12414 | { |
12415 | old_loc->owner = NULL; | |
12416 | decref_bp_location (&old_loc); | |
12417 | } | |
20874c92 | 12418 | } |
74960c60 | 12419 | } |
1c5cfe86 | 12420 | |
348d480f PA |
12421 | /* Rescan breakpoints at the same address and section, marking the |
12422 | first one as "first" and any others as "duplicates". This is so | |
12423 | that the bpt instruction is only inserted once. If we have a | |
12424 | permanent breakpoint at the same place as BPT, make that one the | |
12425 | official one, and the rest as duplicates. Permanent breakpoints | |
12426 | are sorted first for the same address. | |
12427 | ||
12428 | Do the same for hardware watchpoints, but also considering the | |
12429 | watchpoint's type (regular/access/read) and length. */ | |
12430 | ||
12431 | bp_loc_first = NULL; | |
12432 | wp_loc_first = NULL; | |
12433 | awp_loc_first = NULL; | |
12434 | rwp_loc_first = NULL; | |
12435 | ALL_BP_LOCATIONS (loc, locp) | |
12436 | { | |
12437 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12438 | non-NULL. */ | |
348d480f | 12439 | struct bp_location **loc_first_p; |
d3fbdd86 | 12440 | b = loc->owner; |
348d480f | 12441 | |
f8eba3c6 | 12442 | if (!should_be_inserted (loc) |
348d480f | 12443 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12444 | /* Don't detect duplicate for tracepoint locations because they are |
12445 | never duplicated. See the comments in field `duplicate' of | |
12446 | `struct bp_location'. */ | |
348d480f | 12447 | || is_tracepoint (b)) |
b775012e LM |
12448 | { |
12449 | /* Clear the condition modification flag. */ | |
12450 | loc->condition_changed = condition_unchanged; | |
12451 | continue; | |
12452 | } | |
348d480f PA |
12453 | |
12454 | /* Permanent breakpoint should always be inserted. */ | |
12455 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12456 | internal_error (__FILE__, __LINE__, | |
12457 | _("allegedly permanent breakpoint is not " | |
12458 | "actually inserted")); | |
12459 | ||
12460 | if (b->type == bp_hardware_watchpoint) | |
12461 | loc_first_p = &wp_loc_first; | |
12462 | else if (b->type == bp_read_watchpoint) | |
12463 | loc_first_p = &rwp_loc_first; | |
12464 | else if (b->type == bp_access_watchpoint) | |
12465 | loc_first_p = &awp_loc_first; | |
12466 | else | |
12467 | loc_first_p = &bp_loc_first; | |
12468 | ||
12469 | if (*loc_first_p == NULL | |
12470 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12471 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12472 | { | |
12473 | *loc_first_p = loc; | |
12474 | loc->duplicate = 0; | |
b775012e LM |
12475 | |
12476 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12477 | { | |
12478 | loc->needs_update = 1; | |
12479 | /* Clear the condition modification flag. */ | |
12480 | loc->condition_changed = condition_unchanged; | |
12481 | } | |
348d480f PA |
12482 | continue; |
12483 | } | |
12484 | ||
934709f0 PW |
12485 | |
12486 | /* This and the above ensure the invariant that the first location | |
12487 | is not duplicated, and is the inserted one. | |
12488 | All following are marked as duplicated, and are not inserted. */ | |
12489 | if (loc->inserted) | |
12490 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12491 | loc->duplicate = 1; |
12492 | ||
b775012e LM |
12493 | /* Clear the condition modification flag. */ |
12494 | loc->condition_changed = condition_unchanged; | |
12495 | ||
348d480f PA |
12496 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12497 | && b->enable_state != bp_permanent) | |
12498 | internal_error (__FILE__, __LINE__, | |
12499 | _("another breakpoint was inserted on top of " | |
12500 | "a permanent breakpoint")); | |
12501 | } | |
12502 | ||
b775012e | 12503 | if (breakpoints_always_inserted_mode () |
348d480f PA |
12504 | && (have_live_inferiors () |
12505 | || (gdbarch_has_global_breakpoints (target_gdbarch)))) | |
b775012e LM |
12506 | { |
12507 | if (should_insert) | |
12508 | insert_breakpoint_locations (); | |
12509 | else | |
12510 | { | |
12511 | /* Though should_insert is false, we may need to update conditions | |
12512 | on the target's side if it is evaluating such conditions. We | |
12513 | only update conditions for locations that are marked | |
12514 | "needs_update". */ | |
12515 | update_inserted_breakpoint_locations (); | |
12516 | } | |
12517 | } | |
348d480f | 12518 | |
1e4d1764 YQ |
12519 | if (should_insert) |
12520 | download_tracepoint_locations (); | |
12521 | ||
348d480f PA |
12522 | do_cleanups (cleanups); |
12523 | } | |
12524 | ||
12525 | void | |
12526 | breakpoint_retire_moribund (void) | |
12527 | { | |
12528 | struct bp_location *loc; | |
12529 | int ix; | |
12530 | ||
12531 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12532 | if (--(loc->events_till_retirement) == 0) | |
12533 | { | |
12534 | decref_bp_location (&loc); | |
12535 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12536 | --ix; | |
12537 | } | |
12538 | } | |
12539 | ||
12540 | static void | |
12541 | update_global_location_list_nothrow (int inserting) | |
12542 | { | |
bfd189b1 | 12543 | volatile struct gdb_exception e; |
348d480f PA |
12544 | |
12545 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12546 | update_global_location_list (inserting); | |
12547 | } | |
12548 | ||
12549 | /* Clear BKP from a BPS. */ | |
12550 | ||
12551 | static void | |
12552 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12553 | { | |
12554 | bpstat bs; | |
12555 | ||
12556 | for (bs = bps; bs; bs = bs->next) | |
12557 | if (bs->breakpoint_at == bpt) | |
12558 | { | |
12559 | bs->breakpoint_at = NULL; | |
12560 | bs->old_val = NULL; | |
12561 | /* bs->commands will be freed later. */ | |
12562 | } | |
12563 | } | |
12564 | ||
12565 | /* Callback for iterate_over_threads. */ | |
12566 | static int | |
12567 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12568 | { | |
12569 | struct breakpoint *bpt = data; | |
12570 | ||
12571 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12572 | return 0; | |
12573 | } | |
12574 | ||
12575 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12576 | callbacks. */ | |
12577 | ||
12578 | static void | |
12579 | say_where (struct breakpoint *b) | |
12580 | { | |
79a45e25 | 12581 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12582 | struct value_print_options opts; |
12583 | ||
12584 | get_user_print_options (&opts); | |
12585 | ||
12586 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12587 | single string. */ | |
12588 | if (b->loc == NULL) | |
12589 | { | |
12590 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12591 | } | |
12592 | else | |
12593 | { | |
f8eba3c6 | 12594 | if (opts.addressprint || b->loc->source_file == NULL) |
348d480f PA |
12595 | { |
12596 | printf_filtered (" at "); | |
12597 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12598 | gdb_stdout); | |
12599 | } | |
f8eba3c6 TT |
12600 | if (b->loc->source_file) |
12601 | { | |
12602 | /* If there is a single location, we can print the location | |
12603 | more nicely. */ | |
12604 | if (b->loc->next == NULL) | |
12605 | printf_filtered (": file %s, line %d.", | |
12606 | b->loc->source_file, b->loc->line_number); | |
12607 | else | |
12608 | /* This is not ideal, but each location may have a | |
12609 | different file name, and this at least reflects the | |
12610 | real situation somewhat. */ | |
12611 | printf_filtered (": %s.", b->addr_string); | |
12612 | } | |
348d480f PA |
12613 | |
12614 | if (b->loc->next) | |
12615 | { | |
12616 | struct bp_location *loc = b->loc; | |
12617 | int n = 0; | |
12618 | for (; loc; loc = loc->next) | |
12619 | ++n; | |
12620 | printf_filtered (" (%d locations)", n); | |
12621 | } | |
12622 | } | |
12623 | } | |
12624 | ||
348d480f PA |
12625 | /* Default bp_location_ops methods. */ |
12626 | ||
12627 | static void | |
12628 | bp_location_dtor (struct bp_location *self) | |
12629 | { | |
12630 | xfree (self->cond); | |
b775012e LM |
12631 | if (self->cond_bytecode) |
12632 | free_agent_expr (self->cond_bytecode); | |
348d480f | 12633 | xfree (self->function_name); |
f8eba3c6 | 12634 | xfree (self->source_file); |
348d480f PA |
12635 | } |
12636 | ||
12637 | static const struct bp_location_ops bp_location_ops = | |
12638 | { | |
12639 | bp_location_dtor | |
12640 | }; | |
12641 | ||
2060206e PA |
12642 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12643 | inherit from. */ | |
348d480f | 12644 | |
2060206e PA |
12645 | static void |
12646 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12647 | { |
12648 | decref_counted_command_line (&self->commands); | |
12649 | xfree (self->cond_string); | |
348d480f | 12650 | xfree (self->addr_string); |
f8eba3c6 | 12651 | xfree (self->filter); |
348d480f | 12652 | xfree (self->addr_string_range_end); |
348d480f PA |
12653 | } |
12654 | ||
2060206e PA |
12655 | static struct bp_location * |
12656 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12657 | { |
12658 | struct bp_location *loc; | |
12659 | ||
12660 | loc = XNEW (struct bp_location); | |
12661 | init_bp_location (loc, &bp_location_ops, self); | |
12662 | return loc; | |
12663 | } | |
12664 | ||
2060206e PA |
12665 | static void |
12666 | base_breakpoint_re_set (struct breakpoint *b) | |
12667 | { | |
12668 | /* Nothing to re-set. */ | |
12669 | } | |
12670 | ||
12671 | #define internal_error_pure_virtual_called() \ | |
12672 | gdb_assert_not_reached ("pure virtual function called") | |
12673 | ||
12674 | static int | |
12675 | base_breakpoint_insert_location (struct bp_location *bl) | |
12676 | { | |
12677 | internal_error_pure_virtual_called (); | |
12678 | } | |
12679 | ||
12680 | static int | |
12681 | base_breakpoint_remove_location (struct bp_location *bl) | |
12682 | { | |
12683 | internal_error_pure_virtual_called (); | |
12684 | } | |
12685 | ||
12686 | static int | |
12687 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12688 | struct address_space *aspace, | |
09ac7c10 TT |
12689 | CORE_ADDR bp_addr, |
12690 | const struct target_waitstatus *ws) | |
2060206e PA |
12691 | { |
12692 | internal_error_pure_virtual_called (); | |
12693 | } | |
12694 | ||
12695 | static void | |
12696 | base_breakpoint_check_status (bpstat bs) | |
12697 | { | |
12698 | /* Always stop. */ | |
12699 | } | |
12700 | ||
12701 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12702 | errors. */ | |
12703 | ||
12704 | static int | |
12705 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12706 | { | |
12707 | internal_error_pure_virtual_called (); | |
12708 | } | |
12709 | ||
12710 | /* A "resources_needed" breakpoint_ops method that just internal | |
12711 | errors. */ | |
12712 | ||
12713 | static int | |
12714 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12715 | { | |
12716 | internal_error_pure_virtual_called (); | |
12717 | } | |
12718 | ||
12719 | static enum print_stop_action | |
12720 | base_breakpoint_print_it (bpstat bs) | |
12721 | { | |
12722 | internal_error_pure_virtual_called (); | |
12723 | } | |
12724 | ||
12725 | static void | |
12726 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12727 | struct ui_out *uiout) | |
12728 | { | |
12729 | /* nothing */ | |
12730 | } | |
12731 | ||
12732 | static void | |
12733 | base_breakpoint_print_mention (struct breakpoint *b) | |
12734 | { | |
12735 | internal_error_pure_virtual_called (); | |
12736 | } | |
12737 | ||
12738 | static void | |
12739 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12740 | { | |
12741 | internal_error_pure_virtual_called (); | |
12742 | } | |
12743 | ||
983af33b SDJ |
12744 | static void |
12745 | base_breakpoint_create_sals_from_address (char **arg, | |
12746 | struct linespec_result *canonical, | |
12747 | enum bptype type_wanted, | |
12748 | char *addr_start, | |
12749 | char **copy_arg) | |
12750 | { | |
12751 | internal_error_pure_virtual_called (); | |
12752 | } | |
12753 | ||
12754 | static void | |
12755 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12756 | struct linespec_result *c, | |
12757 | struct linespec_sals *lsal, | |
12758 | char *cond_string, | |
e7e0cddf | 12759 | char *extra_string, |
983af33b SDJ |
12760 | enum bptype type_wanted, |
12761 | enum bpdisp disposition, | |
12762 | int thread, | |
12763 | int task, int ignore_count, | |
12764 | const struct breakpoint_ops *o, | |
12765 | int from_tty, int enabled, | |
44f238bb | 12766 | int internal, unsigned flags) |
983af33b SDJ |
12767 | { |
12768 | internal_error_pure_virtual_called (); | |
12769 | } | |
12770 | ||
12771 | static void | |
12772 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12773 | struct symtabs_and_lines *sals) | |
12774 | { | |
12775 | internal_error_pure_virtual_called (); | |
12776 | } | |
12777 | ||
2060206e PA |
12778 | static struct breakpoint_ops base_breakpoint_ops = |
12779 | { | |
12780 | base_breakpoint_dtor, | |
12781 | base_breakpoint_allocate_location, | |
12782 | base_breakpoint_re_set, | |
12783 | base_breakpoint_insert_location, | |
12784 | base_breakpoint_remove_location, | |
12785 | base_breakpoint_breakpoint_hit, | |
12786 | base_breakpoint_check_status, | |
12787 | base_breakpoint_resources_needed, | |
12788 | base_breakpoint_works_in_software_mode, | |
12789 | base_breakpoint_print_it, | |
12790 | NULL, | |
12791 | base_breakpoint_print_one_detail, | |
12792 | base_breakpoint_print_mention, | |
983af33b SDJ |
12793 | base_breakpoint_print_recreate, |
12794 | base_breakpoint_create_sals_from_address, | |
12795 | base_breakpoint_create_breakpoints_sal, | |
12796 | base_breakpoint_decode_linespec, | |
2060206e PA |
12797 | }; |
12798 | ||
12799 | /* Default breakpoint_ops methods. */ | |
12800 | ||
12801 | static void | |
348d480f PA |
12802 | bkpt_re_set (struct breakpoint *b) |
12803 | { | |
06edf0c0 PA |
12804 | /* FIXME: is this still reachable? */ |
12805 | if (b->addr_string == NULL) | |
12806 | { | |
12807 | /* Anything without a string can't be re-set. */ | |
348d480f | 12808 | delete_breakpoint (b); |
06edf0c0 | 12809 | return; |
348d480f | 12810 | } |
06edf0c0 PA |
12811 | |
12812 | breakpoint_re_set_default (b); | |
348d480f PA |
12813 | } |
12814 | ||
2060206e | 12815 | static int |
348d480f PA |
12816 | bkpt_insert_location (struct bp_location *bl) |
12817 | { | |
12818 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12819 | return target_insert_hw_breakpoint (bl->gdbarch, | |
12820 | &bl->target_info); | |
12821 | else | |
12822 | return target_insert_breakpoint (bl->gdbarch, | |
12823 | &bl->target_info); | |
12824 | } | |
12825 | ||
2060206e | 12826 | static int |
348d480f PA |
12827 | bkpt_remove_location (struct bp_location *bl) |
12828 | { | |
12829 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12830 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12831 | else | |
12832 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
12833 | } | |
12834 | ||
2060206e | 12835 | static int |
348d480f | 12836 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12837 | struct address_space *aspace, CORE_ADDR bp_addr, |
12838 | const struct target_waitstatus *ws) | |
348d480f PA |
12839 | { |
12840 | struct breakpoint *b = bl->owner; | |
12841 | ||
09ac7c10 | 12842 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12843 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12844 | return 0; |
12845 | ||
348d480f PA |
12846 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12847 | aspace, bp_addr)) | |
12848 | return 0; | |
12849 | ||
12850 | if (overlay_debugging /* unmapped overlay section */ | |
12851 | && section_is_overlay (bl->section) | |
12852 | && !section_is_mapped (bl->section)) | |
12853 | return 0; | |
12854 | ||
12855 | return 1; | |
12856 | } | |
12857 | ||
2060206e | 12858 | static int |
348d480f PA |
12859 | bkpt_resources_needed (const struct bp_location *bl) |
12860 | { | |
12861 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12862 | ||
12863 | return 1; | |
12864 | } | |
12865 | ||
2060206e | 12866 | static enum print_stop_action |
348d480f PA |
12867 | bkpt_print_it (bpstat bs) |
12868 | { | |
348d480f PA |
12869 | struct breakpoint *b; |
12870 | const struct bp_location *bl; | |
001c8c33 | 12871 | int bp_temp; |
79a45e25 | 12872 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12873 | |
12874 | gdb_assert (bs->bp_location_at != NULL); | |
12875 | ||
12876 | bl = bs->bp_location_at; | |
12877 | b = bs->breakpoint_at; | |
12878 | ||
001c8c33 PA |
12879 | bp_temp = b->disposition == disp_del; |
12880 | if (bl->address != bl->requested_address) | |
12881 | breakpoint_adjustment_warning (bl->requested_address, | |
12882 | bl->address, | |
12883 | b->number, 1); | |
12884 | annotate_breakpoint (b->number); | |
12885 | if (bp_temp) | |
12886 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12887 | else | |
12888 | ui_out_text (uiout, "\nBreakpoint "); | |
12889 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12890 | { |
001c8c33 PA |
12891 | ui_out_field_string (uiout, "reason", |
12892 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12893 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12894 | } |
001c8c33 PA |
12895 | ui_out_field_int (uiout, "bkptno", b->number); |
12896 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12897 | |
001c8c33 | 12898 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12899 | } |
12900 | ||
2060206e | 12901 | static void |
06edf0c0 PA |
12902 | bkpt_print_mention (struct breakpoint *b) |
12903 | { | |
79a45e25 | 12904 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12905 | return; |
12906 | ||
12907 | switch (b->type) | |
12908 | { | |
12909 | case bp_breakpoint: | |
12910 | case bp_gnu_ifunc_resolver: | |
12911 | if (b->disposition == disp_del) | |
12912 | printf_filtered (_("Temporary breakpoint")); | |
12913 | else | |
12914 | printf_filtered (_("Breakpoint")); | |
12915 | printf_filtered (_(" %d"), b->number); | |
12916 | if (b->type == bp_gnu_ifunc_resolver) | |
12917 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12918 | break; | |
12919 | case bp_hardware_breakpoint: | |
12920 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12921 | break; | |
e7e0cddf SS |
12922 | case bp_dprintf: |
12923 | printf_filtered (_("Dprintf %d"), b->number); | |
12924 | break; | |
06edf0c0 PA |
12925 | } |
12926 | ||
12927 | say_where (b); | |
12928 | } | |
12929 | ||
2060206e | 12930 | static void |
06edf0c0 PA |
12931 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12932 | { | |
12933 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12934 | fprintf_unfiltered (fp, "tbreak"); | |
12935 | else if (tp->type == bp_breakpoint) | |
12936 | fprintf_unfiltered (fp, "break"); | |
12937 | else if (tp->type == bp_hardware_breakpoint | |
12938 | && tp->disposition == disp_del) | |
12939 | fprintf_unfiltered (fp, "thbreak"); | |
12940 | else if (tp->type == bp_hardware_breakpoint) | |
12941 | fprintf_unfiltered (fp, "hbreak"); | |
12942 | else | |
12943 | internal_error (__FILE__, __LINE__, | |
12944 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12945 | ||
2060206e | 12946 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 12947 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12948 | } |
12949 | ||
983af33b SDJ |
12950 | static void |
12951 | bkpt_create_sals_from_address (char **arg, | |
12952 | struct linespec_result *canonical, | |
12953 | enum bptype type_wanted, | |
12954 | char *addr_start, char **copy_arg) | |
12955 | { | |
12956 | create_sals_from_address_default (arg, canonical, type_wanted, | |
12957 | addr_start, copy_arg); | |
12958 | } | |
12959 | ||
12960 | static void | |
12961 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12962 | struct linespec_result *canonical, | |
12963 | struct linespec_sals *lsal, | |
12964 | char *cond_string, | |
e7e0cddf | 12965 | char *extra_string, |
983af33b SDJ |
12966 | enum bptype type_wanted, |
12967 | enum bpdisp disposition, | |
12968 | int thread, | |
12969 | int task, int ignore_count, | |
12970 | const struct breakpoint_ops *ops, | |
12971 | int from_tty, int enabled, | |
44f238bb | 12972 | int internal, unsigned flags) |
983af33b SDJ |
12973 | { |
12974 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
12975 | cond_string, extra_string, |
12976 | type_wanted, | |
983af33b SDJ |
12977 | disposition, thread, task, |
12978 | ignore_count, ops, from_tty, | |
44f238bb | 12979 | enabled, internal, flags); |
983af33b SDJ |
12980 | } |
12981 | ||
12982 | static void | |
12983 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
12984 | struct symtabs_and_lines *sals) | |
12985 | { | |
12986 | decode_linespec_default (b, s, sals); | |
12987 | } | |
12988 | ||
06edf0c0 PA |
12989 | /* Virtual table for internal breakpoints. */ |
12990 | ||
12991 | static void | |
12992 | internal_bkpt_re_set (struct breakpoint *b) | |
12993 | { | |
12994 | switch (b->type) | |
12995 | { | |
12996 | /* Delete overlay event and longjmp master breakpoints; they | |
12997 | will be reset later by breakpoint_re_set. */ | |
12998 | case bp_overlay_event: | |
12999 | case bp_longjmp_master: | |
13000 | case bp_std_terminate_master: | |
13001 | case bp_exception_master: | |
13002 | delete_breakpoint (b); | |
13003 | break; | |
13004 | ||
13005 | /* This breakpoint is special, it's set up when the inferior | |
13006 | starts and we really don't want to touch it. */ | |
13007 | case bp_shlib_event: | |
13008 | ||
13009 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
13010 | it is set up, we do not want to touch it. */ | |
13011 | case bp_thread_event: | |
13012 | break; | |
13013 | } | |
13014 | } | |
13015 | ||
13016 | static void | |
13017 | internal_bkpt_check_status (bpstat bs) | |
13018 | { | |
a9b3a50f PA |
13019 | if (bs->breakpoint_at->type == bp_shlib_event) |
13020 | { | |
13021 | /* If requested, stop when the dynamic linker notifies GDB of | |
13022 | events. This allows the user to get control and place | |
13023 | breakpoints in initializer routines for dynamically loaded | |
13024 | objects (among other things). */ | |
13025 | bs->stop = stop_on_solib_events; | |
13026 | bs->print = stop_on_solib_events; | |
13027 | } | |
13028 | else | |
13029 | bs->stop = 0; | |
06edf0c0 PA |
13030 | } |
13031 | ||
13032 | static enum print_stop_action | |
13033 | internal_bkpt_print_it (bpstat bs) | |
13034 | { | |
36dfb11c | 13035 | struct ui_out *uiout = current_uiout; |
06edf0c0 | 13036 | struct breakpoint *b; |
06edf0c0 | 13037 | |
06edf0c0 PA |
13038 | b = bs->breakpoint_at; |
13039 | ||
06edf0c0 PA |
13040 | switch (b->type) |
13041 | { | |
348d480f PA |
13042 | case bp_shlib_event: |
13043 | /* Did we stop because the user set the stop_on_solib_events | |
13044 | variable? (If so, we report this as a generic, "Stopped due | |
13045 | to shlib event" message.) */ | |
edcc5120 | 13046 | print_solib_event (0); |
348d480f PA |
13047 | break; |
13048 | ||
13049 | case bp_thread_event: | |
13050 | /* Not sure how we will get here. | |
13051 | GDB should not stop for these breakpoints. */ | |
13052 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13053 | break; |
13054 | ||
13055 | case bp_overlay_event: | |
13056 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13057 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13058 | break; |
13059 | ||
13060 | case bp_longjmp_master: | |
13061 | /* These should never be enabled. */ | |
13062 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13063 | break; |
13064 | ||
13065 | case bp_std_terminate_master: | |
13066 | /* These should never be enabled. */ | |
13067 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13068 | "gdb should not stop!\n")); | |
348d480f PA |
13069 | break; |
13070 | ||
13071 | case bp_exception_master: | |
13072 | /* These should never be enabled. */ | |
13073 | printf_filtered (_("Exception Master Breakpoint: " | |
13074 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13075 | break; |
13076 | } | |
13077 | ||
001c8c33 | 13078 | return PRINT_NOTHING; |
06edf0c0 PA |
13079 | } |
13080 | ||
13081 | static void | |
13082 | internal_bkpt_print_mention (struct breakpoint *b) | |
13083 | { | |
13084 | /* Nothing to mention. These breakpoints are internal. */ | |
13085 | } | |
13086 | ||
06edf0c0 PA |
13087 | /* Virtual table for momentary breakpoints */ |
13088 | ||
13089 | static void | |
13090 | momentary_bkpt_re_set (struct breakpoint *b) | |
13091 | { | |
13092 | /* Keep temporary breakpoints, which can be encountered when we step | |
13093 | over a dlopen call and SOLIB_ADD is resetting the breakpoints. | |
13094 | Otherwise these should have been blown away via the cleanup chain | |
13095 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13096 | } | |
13097 | ||
13098 | static void | |
13099 | momentary_bkpt_check_status (bpstat bs) | |
13100 | { | |
13101 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13102 | } | |
13103 | ||
13104 | static enum print_stop_action | |
13105 | momentary_bkpt_print_it (bpstat bs) | |
13106 | { | |
79a45e25 PA |
13107 | struct ui_out *uiout = current_uiout; |
13108 | ||
001c8c33 | 13109 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13110 | { |
001c8c33 | 13111 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13112 | |
001c8c33 PA |
13113 | switch (b->type) |
13114 | { | |
13115 | case bp_finish: | |
13116 | ui_out_field_string | |
13117 | (uiout, "reason", | |
13118 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13119 | break; | |
348d480f | 13120 | |
001c8c33 PA |
13121 | case bp_until: |
13122 | ui_out_field_string | |
13123 | (uiout, "reason", | |
13124 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13125 | break; | |
13126 | } | |
348d480f PA |
13127 | } |
13128 | ||
001c8c33 | 13129 | return PRINT_UNKNOWN; |
348d480f PA |
13130 | } |
13131 | ||
06edf0c0 PA |
13132 | static void |
13133 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13134 | { |
06edf0c0 | 13135 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13136 | } |
13137 | ||
e2e4d78b JK |
13138 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13139 | ||
13140 | It gets cleared already on the removal of the first one of such placed | |
13141 | breakpoints. This is OK as they get all removed altogether. */ | |
13142 | ||
13143 | static void | |
13144 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13145 | { | |
13146 | struct thread_info *tp = find_thread_id (self->thread); | |
13147 | ||
13148 | if (tp) | |
13149 | tp->initiating_frame = null_frame_id; | |
13150 | ||
13151 | momentary_breakpoint_ops.dtor (self); | |
13152 | } | |
13153 | ||
55aa24fb SDJ |
13154 | /* Specific methods for probe breakpoints. */ |
13155 | ||
13156 | static int | |
13157 | bkpt_probe_insert_location (struct bp_location *bl) | |
13158 | { | |
13159 | int v = bkpt_insert_location (bl); | |
13160 | ||
13161 | if (v == 0) | |
13162 | { | |
13163 | /* The insertion was successful, now let's set the probe's semaphore | |
13164 | if needed. */ | |
13165 | bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch); | |
13166 | } | |
13167 | ||
13168 | return v; | |
13169 | } | |
13170 | ||
13171 | static int | |
13172 | bkpt_probe_remove_location (struct bp_location *bl) | |
13173 | { | |
13174 | /* Let's clear the semaphore before removing the location. */ | |
13175 | bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch); | |
13176 | ||
13177 | return bkpt_remove_location (bl); | |
13178 | } | |
13179 | ||
13180 | static void | |
13181 | bkpt_probe_create_sals_from_address (char **arg, | |
13182 | struct linespec_result *canonical, | |
13183 | enum bptype type_wanted, | |
13184 | char *addr_start, char **copy_arg) | |
13185 | { | |
13186 | struct linespec_sals lsal; | |
13187 | ||
13188 | lsal.sals = parse_probes (arg, canonical); | |
13189 | ||
13190 | *copy_arg = xstrdup (canonical->addr_string); | |
13191 | lsal.canonical = xstrdup (*copy_arg); | |
13192 | ||
13193 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13194 | } | |
13195 | ||
13196 | static void | |
13197 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
13198 | struct symtabs_and_lines *sals) | |
13199 | { | |
13200 | *sals = parse_probes (s, NULL); | |
13201 | if (!sals->sals) | |
13202 | error (_("probe not found")); | |
13203 | } | |
13204 | ||
348d480f | 13205 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13206 | |
348d480f PA |
13207 | static void |
13208 | tracepoint_re_set (struct breakpoint *b) | |
13209 | { | |
13210 | breakpoint_re_set_default (b); | |
13211 | } | |
876fa593 | 13212 | |
348d480f PA |
13213 | static int |
13214 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13215 | struct address_space *aspace, CORE_ADDR bp_addr, |
13216 | const struct target_waitstatus *ws) | |
348d480f PA |
13217 | { |
13218 | /* By definition, the inferior does not report stops at | |
13219 | tracepoints. */ | |
13220 | return 0; | |
74960c60 VP |
13221 | } |
13222 | ||
13223 | static void | |
348d480f PA |
13224 | tracepoint_print_one_detail (const struct breakpoint *self, |
13225 | struct ui_out *uiout) | |
74960c60 | 13226 | { |
d9b3f62e PA |
13227 | struct tracepoint *tp = (struct tracepoint *) self; |
13228 | if (tp->static_trace_marker_id) | |
348d480f PA |
13229 | { |
13230 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13231 | |
348d480f PA |
13232 | ui_out_text (uiout, "\tmarker id is "); |
13233 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13234 | tp->static_trace_marker_id); |
348d480f PA |
13235 | ui_out_text (uiout, "\n"); |
13236 | } | |
0d381245 VP |
13237 | } |
13238 | ||
a474d7c2 | 13239 | static void |
348d480f | 13240 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13241 | { |
79a45e25 | 13242 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13243 | return; |
cc59ec59 | 13244 | |
348d480f PA |
13245 | switch (b->type) |
13246 | { | |
13247 | case bp_tracepoint: | |
13248 | printf_filtered (_("Tracepoint")); | |
13249 | printf_filtered (_(" %d"), b->number); | |
13250 | break; | |
13251 | case bp_fast_tracepoint: | |
13252 | printf_filtered (_("Fast tracepoint")); | |
13253 | printf_filtered (_(" %d"), b->number); | |
13254 | break; | |
13255 | case bp_static_tracepoint: | |
13256 | printf_filtered (_("Static tracepoint")); | |
13257 | printf_filtered (_(" %d"), b->number); | |
13258 | break; | |
13259 | default: | |
13260 | internal_error (__FILE__, __LINE__, | |
13261 | _("unhandled tracepoint type %d"), (int) b->type); | |
13262 | } | |
13263 | ||
13264 | say_where (b); | |
a474d7c2 PA |
13265 | } |
13266 | ||
348d480f | 13267 | static void |
d9b3f62e | 13268 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13269 | { |
d9b3f62e PA |
13270 | struct tracepoint *tp = (struct tracepoint *) self; |
13271 | ||
13272 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13273 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13274 | if (self->type == bp_static_tracepoint) |
348d480f | 13275 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13276 | else if (self->type == bp_tracepoint) |
348d480f PA |
13277 | fprintf_unfiltered (fp, "trace"); |
13278 | else | |
13279 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13280 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13281 | |
d9b3f62e PA |
13282 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13283 | print_recreate_thread (self, fp); | |
13284 | ||
13285 | if (tp->pass_count) | |
13286 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13287 | } |
13288 | ||
983af33b SDJ |
13289 | static void |
13290 | tracepoint_create_sals_from_address (char **arg, | |
13291 | struct linespec_result *canonical, | |
13292 | enum bptype type_wanted, | |
13293 | char *addr_start, char **copy_arg) | |
13294 | { | |
13295 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13296 | addr_start, copy_arg); | |
13297 | } | |
13298 | ||
13299 | static void | |
13300 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13301 | struct linespec_result *canonical, | |
13302 | struct linespec_sals *lsal, | |
13303 | char *cond_string, | |
e7e0cddf | 13304 | char *extra_string, |
983af33b SDJ |
13305 | enum bptype type_wanted, |
13306 | enum bpdisp disposition, | |
13307 | int thread, | |
13308 | int task, int ignore_count, | |
13309 | const struct breakpoint_ops *ops, | |
13310 | int from_tty, int enabled, | |
44f238bb | 13311 | int internal, unsigned flags) |
983af33b SDJ |
13312 | { |
13313 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13314 | cond_string, extra_string, |
13315 | type_wanted, | |
983af33b SDJ |
13316 | disposition, thread, task, |
13317 | ignore_count, ops, from_tty, | |
44f238bb | 13318 | enabled, internal, flags); |
983af33b SDJ |
13319 | } |
13320 | ||
13321 | static void | |
13322 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13323 | struct symtabs_and_lines *sals) | |
13324 | { | |
13325 | decode_linespec_default (b, s, sals); | |
13326 | } | |
13327 | ||
2060206e | 13328 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13329 | |
55aa24fb SDJ |
13330 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13331 | static probe. */ | |
13332 | ||
13333 | static void | |
13334 | tracepoint_probe_create_sals_from_address (char **arg, | |
13335 | struct linespec_result *canonical, | |
13336 | enum bptype type_wanted, | |
13337 | char *addr_start, char **copy_arg) | |
13338 | { | |
13339 | /* We use the same method for breakpoint on probes. */ | |
13340 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13341 | addr_start, copy_arg); | |
13342 | } | |
13343 | ||
13344 | static void | |
13345 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13346 | struct symtabs_and_lines *sals) | |
13347 | { | |
13348 | /* We use the same method for breakpoint on probes. */ | |
13349 | bkpt_probe_decode_linespec (b, s, sals); | |
13350 | } | |
13351 | ||
13352 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13353 | ||
983af33b SDJ |
13354 | /* The breakpoint_ops structure to be used on static tracepoints with |
13355 | markers (`-m'). */ | |
13356 | ||
13357 | static void | |
13358 | strace_marker_create_sals_from_address (char **arg, | |
13359 | struct linespec_result *canonical, | |
13360 | enum bptype type_wanted, | |
13361 | char *addr_start, char **copy_arg) | |
13362 | { | |
13363 | struct linespec_sals lsal; | |
13364 | ||
13365 | lsal.sals = decode_static_tracepoint_spec (arg); | |
13366 | ||
13367 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
13368 | ||
13369 | canonical->addr_string = xstrdup (*copy_arg); | |
13370 | lsal.canonical = xstrdup (*copy_arg); | |
13371 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13372 | } | |
13373 | ||
13374 | static void | |
13375 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13376 | struct linespec_result *canonical, | |
13377 | struct linespec_sals *lsal, | |
13378 | char *cond_string, | |
e7e0cddf | 13379 | char *extra_string, |
983af33b SDJ |
13380 | enum bptype type_wanted, |
13381 | enum bpdisp disposition, | |
13382 | int thread, | |
13383 | int task, int ignore_count, | |
13384 | const struct breakpoint_ops *ops, | |
13385 | int from_tty, int enabled, | |
44f238bb | 13386 | int internal, unsigned flags) |
983af33b SDJ |
13387 | { |
13388 | int i; | |
13389 | ||
13390 | /* If the user is creating a static tracepoint by marker id | |
13391 | (strace -m MARKER_ID), then store the sals index, so that | |
13392 | breakpoint_re_set can try to match up which of the newly | |
13393 | found markers corresponds to this one, and, don't try to | |
13394 | expand multiple locations for each sal, given than SALS | |
13395 | already should contain all sals for MARKER_ID. */ | |
13396 | ||
13397 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13398 | { | |
13399 | struct symtabs_and_lines expanded; | |
13400 | struct tracepoint *tp; | |
13401 | struct cleanup *old_chain; | |
13402 | char *addr_string; | |
13403 | ||
13404 | expanded.nelts = 1; | |
13405 | expanded.sals = &lsal->sals.sals[i]; | |
13406 | ||
13407 | addr_string = xstrdup (canonical->addr_string); | |
13408 | old_chain = make_cleanup (xfree, addr_string); | |
13409 | ||
13410 | tp = XCNEW (struct tracepoint); | |
13411 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
13412 | addr_string, NULL, | |
e7e0cddf SS |
13413 | cond_string, extra_string, |
13414 | type_wanted, disposition, | |
983af33b | 13415 | thread, task, ignore_count, ops, |
44f238bb | 13416 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13417 | canonical->special_display); |
13418 | /* Given that its possible to have multiple markers with | |
13419 | the same string id, if the user is creating a static | |
13420 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13421 | store the sals index, so that breakpoint_re_set can | |
13422 | try to match up which of the newly found markers | |
13423 | corresponds to this one */ | |
13424 | tp->static_trace_marker_id_idx = i; | |
13425 | ||
13426 | install_breakpoint (internal, &tp->base, 0); | |
13427 | ||
13428 | discard_cleanups (old_chain); | |
13429 | } | |
13430 | } | |
13431 | ||
13432 | static void | |
13433 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
13434 | struct symtabs_and_lines *sals) | |
13435 | { | |
13436 | struct tracepoint *tp = (struct tracepoint *) b; | |
13437 | ||
13438 | *sals = decode_static_tracepoint_spec (s); | |
13439 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
13440 | { | |
13441 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13442 | sals->nelts = 1; | |
13443 | } | |
13444 | else | |
13445 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13446 | } | |
13447 | ||
13448 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13449 | ||
13450 | static int | |
13451 | strace_marker_p (struct breakpoint *b) | |
13452 | { | |
13453 | return b->ops == &strace_marker_breakpoint_ops; | |
13454 | } | |
13455 | ||
53a5351d | 13456 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13457 | structures. */ |
c906108c SS |
13458 | |
13459 | void | |
fba45db2 | 13460 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13461 | { |
52f0bd74 | 13462 | struct breakpoint *b; |
c906108c | 13463 | |
8a3fe4f8 | 13464 | gdb_assert (bpt != NULL); |
c906108c | 13465 | |
4a64f543 MS |
13466 | /* Has this bp already been deleted? This can happen because |
13467 | multiple lists can hold pointers to bp's. bpstat lists are | |
13468 | especial culprits. | |
13469 | ||
13470 | One example of this happening is a watchpoint's scope bp. When | |
13471 | the scope bp triggers, we notice that the watchpoint is out of | |
13472 | scope, and delete it. We also delete its scope bp. But the | |
13473 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13474 | That bpstat is then checked for auto-deleting bp's, which are | |
13475 | deleted. | |
13476 | ||
13477 | A real solution to this problem might involve reference counts in | |
13478 | bp's, and/or giving them pointers back to their referencing | |
13479 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13480 | storage when no more references were extent. A cheaper bandaid | |
13481 | was chosen. */ | |
c906108c SS |
13482 | if (bpt->type == bp_none) |
13483 | return; | |
13484 | ||
4a64f543 MS |
13485 | /* At least avoid this stale reference until the reference counting |
13486 | of breakpoints gets resolved. */ | |
d0fb5eae | 13487 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13488 | { |
d0fb5eae | 13489 | struct breakpoint *related; |
3a5c3e22 | 13490 | struct watchpoint *w; |
d0fb5eae JK |
13491 | |
13492 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13493 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13494 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13495 | w = (struct watchpoint *) bpt; |
13496 | else | |
13497 | w = NULL; | |
13498 | if (w != NULL) | |
13499 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13500 | |
13501 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13502 | for (related = bpt; related->related_breakpoint != bpt; | |
13503 | related = related->related_breakpoint); | |
13504 | related->related_breakpoint = bpt->related_breakpoint; | |
13505 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13506 | } |
13507 | ||
a9634178 TJB |
13508 | /* watch_command_1 creates a watchpoint but only sets its number if |
13509 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13510 | a problem in that process, we'll be asked to delete the half-created | |
13511 | watchpoint. In that case, don't announce the deletion. */ | |
13512 | if (bpt->number) | |
13513 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13514 | |
c906108c SS |
13515 | if (breakpoint_chain == bpt) |
13516 | breakpoint_chain = bpt->next; | |
13517 | ||
c906108c SS |
13518 | ALL_BREAKPOINTS (b) |
13519 | if (b->next == bpt) | |
c5aa993b JM |
13520 | { |
13521 | b->next = bpt->next; | |
13522 | break; | |
13523 | } | |
c906108c | 13524 | |
f431efe5 PA |
13525 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13526 | been freed. */ | |
13527 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13528 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13529 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13530 | commands are associated with the bpstat; if we remove it here, | |
13531 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13532 | event-top.c won't do anything, and temporary breakpoints with | |
13533 | commands won't work. */ | |
13534 | ||
13535 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13536 | ||
4a64f543 MS |
13537 | /* Now that breakpoint is removed from breakpoint list, update the |
13538 | global location list. This will remove locations that used to | |
13539 | belong to this breakpoint. Do this before freeing the breakpoint | |
13540 | itself, since remove_breakpoint looks at location's owner. It | |
13541 | might be better design to have location completely | |
13542 | self-contained, but it's not the case now. */ | |
b60e7edf | 13543 | update_global_location_list (0); |
74960c60 | 13544 | |
348d480f | 13545 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13546 | /* On the chance that someone will soon try again to delete this |
13547 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13548 | bpt->type = bp_none; |
b8c9b27d | 13549 | xfree (bpt); |
c906108c SS |
13550 | } |
13551 | ||
4d6140d9 AC |
13552 | static void |
13553 | do_delete_breakpoint_cleanup (void *b) | |
13554 | { | |
13555 | delete_breakpoint (b); | |
13556 | } | |
13557 | ||
13558 | struct cleanup * | |
13559 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13560 | { | |
13561 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13562 | } | |
13563 | ||
51be5b68 PA |
13564 | /* Iterator function to call a user-provided callback function once |
13565 | for each of B and its related breakpoints. */ | |
13566 | ||
13567 | static void | |
13568 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13569 | void (*function) (struct breakpoint *, | |
13570 | void *), | |
13571 | void *data) | |
13572 | { | |
13573 | struct breakpoint *related; | |
13574 | ||
13575 | related = b; | |
13576 | do | |
13577 | { | |
13578 | struct breakpoint *next; | |
13579 | ||
13580 | /* FUNCTION may delete RELATED. */ | |
13581 | next = related->related_breakpoint; | |
13582 | ||
13583 | if (next == related) | |
13584 | { | |
13585 | /* RELATED is the last ring entry. */ | |
13586 | function (related, data); | |
13587 | ||
13588 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13589 | B. There's nothing left to do anyway, so just break | |
13590 | out. */ | |
13591 | break; | |
13592 | } | |
13593 | else | |
13594 | function (related, data); | |
13595 | ||
13596 | related = next; | |
13597 | } | |
13598 | while (related != b); | |
13599 | } | |
95a42b64 TT |
13600 | |
13601 | static void | |
13602 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13603 | { | |
13604 | delete_breakpoint (b); | |
13605 | } | |
13606 | ||
51be5b68 PA |
13607 | /* A callback for map_breakpoint_numbers that calls |
13608 | delete_breakpoint. */ | |
13609 | ||
13610 | static void | |
13611 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13612 | { | |
13613 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13614 | } | |
13615 | ||
c906108c | 13616 | void |
fba45db2 | 13617 | delete_command (char *arg, int from_tty) |
c906108c | 13618 | { |
35df4500 | 13619 | struct breakpoint *b, *b_tmp; |
c906108c | 13620 | |
ea9365bb TT |
13621 | dont_repeat (); |
13622 | ||
c906108c SS |
13623 | if (arg == 0) |
13624 | { | |
13625 | int breaks_to_delete = 0; | |
13626 | ||
46c6471b PA |
13627 | /* Delete all breakpoints if no argument. Do not delete |
13628 | internal breakpoints, these have to be deleted with an | |
13629 | explicit breakpoint number argument. */ | |
c5aa993b | 13630 | ALL_BREAKPOINTS (b) |
46c6471b | 13631 | if (user_breakpoint_p (b)) |
973d738b DJ |
13632 | { |
13633 | breaks_to_delete = 1; | |
13634 | break; | |
13635 | } | |
c906108c SS |
13636 | |
13637 | /* Ask user only if there are some breakpoints to delete. */ | |
13638 | if (!from_tty | |
e2e0b3e5 | 13639 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13640 | { |
35df4500 | 13641 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13642 | if (user_breakpoint_p (b)) |
c5aa993b | 13643 | delete_breakpoint (b); |
c906108c SS |
13644 | } |
13645 | } | |
13646 | else | |
51be5b68 | 13647 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13648 | } |
13649 | ||
0d381245 VP |
13650 | static int |
13651 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13652 | { |
0d381245 | 13653 | for (; loc; loc = loc->next) |
8645ff69 UW |
13654 | if (!loc->shlib_disabled |
13655 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13656 | return 0; |
13657 | return 1; | |
fe3f5fa8 VP |
13658 | } |
13659 | ||
776592bf DE |
13660 | /* Subroutine of update_breakpoint_locations to simplify it. |
13661 | Return non-zero if multiple fns in list LOC have the same name. | |
13662 | Null names are ignored. */ | |
13663 | ||
13664 | static int | |
13665 | ambiguous_names_p (struct bp_location *loc) | |
13666 | { | |
13667 | struct bp_location *l; | |
13668 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13669 | (int (*) (const void *, |
13670 | const void *)) streq, | |
776592bf DE |
13671 | NULL, xcalloc, xfree); |
13672 | ||
13673 | for (l = loc; l != NULL; l = l->next) | |
13674 | { | |
13675 | const char **slot; | |
13676 | const char *name = l->function_name; | |
13677 | ||
13678 | /* Allow for some names to be NULL, ignore them. */ | |
13679 | if (name == NULL) | |
13680 | continue; | |
13681 | ||
13682 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13683 | INSERT); | |
4a64f543 MS |
13684 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13685 | returns NULL. */ | |
776592bf DE |
13686 | if (*slot != NULL) |
13687 | { | |
13688 | htab_delete (htab); | |
13689 | return 1; | |
13690 | } | |
13691 | *slot = name; | |
13692 | } | |
13693 | ||
13694 | htab_delete (htab); | |
13695 | return 0; | |
13696 | } | |
13697 | ||
0fb4aa4b PA |
13698 | /* When symbols change, it probably means the sources changed as well, |
13699 | and it might mean the static tracepoint markers are no longer at | |
13700 | the same address or line numbers they used to be at last we | |
13701 | checked. Losing your static tracepoints whenever you rebuild is | |
13702 | undesirable. This function tries to resync/rematch gdb static | |
13703 | tracepoints with the markers on the target, for static tracepoints | |
13704 | that have not been set by marker id. Static tracepoint that have | |
13705 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13706 | The heuristic is: | |
13707 | ||
13708 | 1) For a tracepoint set at a specific address, look for a marker at | |
13709 | the old PC. If one is found there, assume to be the same marker. | |
13710 | If the name / string id of the marker found is different from the | |
13711 | previous known name, assume that means the user renamed the marker | |
13712 | in the sources, and output a warning. | |
13713 | ||
13714 | 2) For a tracepoint set at a given line number, look for a marker | |
13715 | at the new address of the old line number. If one is found there, | |
13716 | assume to be the same marker. If the name / string id of the | |
13717 | marker found is different from the previous known name, assume that | |
13718 | means the user renamed the marker in the sources, and output a | |
13719 | warning. | |
13720 | ||
13721 | 3) If a marker is no longer found at the same address or line, it | |
13722 | may mean the marker no longer exists. But it may also just mean | |
13723 | the code changed a bit. Maybe the user added a few lines of code | |
13724 | that made the marker move up or down (in line number terms). Ask | |
13725 | the target for info about the marker with the string id as we knew | |
13726 | it. If found, update line number and address in the matching | |
13727 | static tracepoint. This will get confused if there's more than one | |
13728 | marker with the same ID (possible in UST, although unadvised | |
13729 | precisely because it confuses tools). */ | |
13730 | ||
13731 | static struct symtab_and_line | |
13732 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13733 | { | |
d9b3f62e | 13734 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13735 | struct static_tracepoint_marker marker; |
13736 | CORE_ADDR pc; | |
0fb4aa4b PA |
13737 | |
13738 | pc = sal.pc; | |
13739 | if (sal.line) | |
13740 | find_line_pc (sal.symtab, sal.line, &pc); | |
13741 | ||
13742 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13743 | { | |
d9b3f62e | 13744 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13745 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13746 | b->number, | |
d9b3f62e | 13747 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13748 | |
d9b3f62e PA |
13749 | xfree (tp->static_trace_marker_id); |
13750 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13751 | release_static_tracepoint_marker (&marker); |
13752 | ||
13753 | return sal; | |
13754 | } | |
13755 | ||
13756 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13757 | by string ID. */ | |
13758 | if (!sal.explicit_pc | |
13759 | && sal.line != 0 | |
13760 | && sal.symtab != NULL | |
d9b3f62e | 13761 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13762 | { |
13763 | VEC(static_tracepoint_marker_p) *markers; | |
13764 | ||
13765 | markers | |
d9b3f62e | 13766 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13767 | |
13768 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13769 | { | |
80e1d417 | 13770 | struct symtab_and_line sal2; |
0fb4aa4b | 13771 | struct symbol *sym; |
80e1d417 | 13772 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13773 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 13774 | |
80e1d417 | 13775 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13776 | |
d9b3f62e | 13777 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13778 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13779 | |
13780 | warning (_("marker for static tracepoint %d (%s) not " | |
13781 | "found at previous line number"), | |
d9b3f62e | 13782 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13783 | |
80e1d417 | 13784 | init_sal (&sal2); |
0fb4aa4b | 13785 | |
80e1d417 | 13786 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13787 | |
80e1d417 AS |
13788 | sal2 = find_pc_line (tpmarker->address, 0); |
13789 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13790 | ui_out_text (uiout, "Now in "); |
13791 | if (sym) | |
13792 | { | |
13793 | ui_out_field_string (uiout, "func", | |
13794 | SYMBOL_PRINT_NAME (sym)); | |
13795 | ui_out_text (uiout, " at "); | |
13796 | } | |
80e1d417 | 13797 | ui_out_field_string (uiout, "file", sal2.symtab->filename); |
0fb4aa4b PA |
13798 | ui_out_text (uiout, ":"); |
13799 | ||
13800 | if (ui_out_is_mi_like_p (uiout)) | |
13801 | { | |
80e1d417 | 13802 | char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b PA |
13803 | |
13804 | if (fullname) | |
13805 | ui_out_field_string (uiout, "fullname", fullname); | |
13806 | } | |
13807 | ||
80e1d417 | 13808 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13809 | ui_out_text (uiout, "\n"); |
13810 | ||
80e1d417 | 13811 | b->loc->line_number = sal2.line; |
0fb4aa4b | 13812 | |
f8eba3c6 | 13813 | xfree (b->loc->source_file); |
0fb4aa4b | 13814 | if (sym) |
80e1d417 | 13815 | b->loc->source_file = xstrdup (sal2.symtab->filename); |
0fb4aa4b | 13816 | else |
f8eba3c6 | 13817 | b->loc->source_file = NULL; |
0fb4aa4b PA |
13818 | |
13819 | xfree (b->addr_string); | |
13820 | b->addr_string = xstrprintf ("%s:%d", | |
80e1d417 | 13821 | sal2.symtab->filename, |
f8eba3c6 | 13822 | b->loc->line_number); |
0fb4aa4b PA |
13823 | |
13824 | /* Might be nice to check if function changed, and warn if | |
13825 | so. */ | |
13826 | ||
80e1d417 | 13827 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13828 | } |
13829 | } | |
13830 | return sal; | |
13831 | } | |
13832 | ||
8d3788bd VP |
13833 | /* Returns 1 iff locations A and B are sufficiently same that |
13834 | we don't need to report breakpoint as changed. */ | |
13835 | ||
13836 | static int | |
13837 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13838 | { | |
13839 | while (a && b) | |
13840 | { | |
13841 | if (a->address != b->address) | |
13842 | return 0; | |
13843 | ||
13844 | if (a->shlib_disabled != b->shlib_disabled) | |
13845 | return 0; | |
13846 | ||
13847 | if (a->enabled != b->enabled) | |
13848 | return 0; | |
13849 | ||
13850 | a = a->next; | |
13851 | b = b->next; | |
13852 | } | |
13853 | ||
13854 | if ((a == NULL) != (b == NULL)) | |
13855 | return 0; | |
13856 | ||
13857 | return 1; | |
13858 | } | |
13859 | ||
f1310107 TJB |
13860 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
13861 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
13862 | a ranged breakpoint. */ | |
13863 | ||
0e30163f | 13864 | void |
0d381245 | 13865 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
13866 | struct symtabs_and_lines sals, |
13867 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
13868 | { |
13869 | int i; | |
0d381245 VP |
13870 | struct bp_location *existing_locations = b->loc; |
13871 | ||
f8eba3c6 TT |
13872 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
13873 | { | |
13874 | /* Ranged breakpoints have only one start location and one end | |
13875 | location. */ | |
13876 | b->enable_state = bp_disabled; | |
13877 | update_global_location_list (1); | |
13878 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
13879 | "multiple locations found\n"), | |
13880 | b->number); | |
13881 | return; | |
13882 | } | |
f1310107 | 13883 | |
4a64f543 MS |
13884 | /* If there's no new locations, and all existing locations are |
13885 | pending, don't do anything. This optimizes the common case where | |
13886 | all locations are in the same shared library, that was unloaded. | |
13887 | We'd like to retain the location, so that when the library is | |
13888 | loaded again, we don't loose the enabled/disabled status of the | |
13889 | individual locations. */ | |
0d381245 | 13890 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
13891 | return; |
13892 | ||
fe3f5fa8 VP |
13893 | b->loc = NULL; |
13894 | ||
0d381245 | 13895 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 13896 | { |
f8eba3c6 TT |
13897 | struct bp_location *new_loc; |
13898 | ||
13899 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
13900 | ||
13901 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 13902 | |
0d381245 VP |
13903 | /* Reparse conditions, they might contain references to the |
13904 | old symtab. */ | |
13905 | if (b->cond_string != NULL) | |
13906 | { | |
f1310107 | 13907 | char *s; |
bfd189b1 | 13908 | volatile struct gdb_exception e; |
fe3f5fa8 | 13909 | |
0d381245 VP |
13910 | s = b->cond_string; |
13911 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13912 | { | |
1bb9788d TT |
13913 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
13914 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
13915 | 0); |
13916 | } | |
13917 | if (e.reason < 0) | |
13918 | { | |
3e43a32a MS |
13919 | warning (_("failed to reevaluate condition " |
13920 | "for breakpoint %d: %s"), | |
0d381245 VP |
13921 | b->number, e.message); |
13922 | new_loc->enabled = 0; | |
13923 | } | |
13924 | } | |
fe3f5fa8 | 13925 | |
f1310107 TJB |
13926 | if (sals_end.nelts) |
13927 | { | |
13928 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
13929 | ||
13930 | new_loc->length = end - sals.sals[0].pc + 1; | |
13931 | } | |
0d381245 | 13932 | } |
fe3f5fa8 | 13933 | |
514f746b AR |
13934 | /* Update locations of permanent breakpoints. */ |
13935 | if (b->enable_state == bp_permanent) | |
13936 | make_breakpoint_permanent (b); | |
13937 | ||
4a64f543 MS |
13938 | /* If possible, carry over 'disable' status from existing |
13939 | breakpoints. */ | |
0d381245 VP |
13940 | { |
13941 | struct bp_location *e = existing_locations; | |
776592bf DE |
13942 | /* If there are multiple breakpoints with the same function name, |
13943 | e.g. for inline functions, comparing function names won't work. | |
13944 | Instead compare pc addresses; this is just a heuristic as things | |
13945 | may have moved, but in practice it gives the correct answer | |
13946 | often enough until a better solution is found. */ | |
13947 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13948 | ||
0d381245 VP |
13949 | for (; e; e = e->next) |
13950 | { | |
13951 | if (!e->enabled && e->function_name) | |
13952 | { | |
13953 | struct bp_location *l = b->loc; | |
776592bf DE |
13954 | if (have_ambiguous_names) |
13955 | { | |
13956 | for (; l; l = l->next) | |
f1310107 | 13957 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13958 | { |
13959 | l->enabled = 0; | |
13960 | break; | |
13961 | } | |
13962 | } | |
13963 | else | |
13964 | { | |
13965 | for (; l; l = l->next) | |
13966 | if (l->function_name | |
13967 | && strcmp (e->function_name, l->function_name) == 0) | |
13968 | { | |
13969 | l->enabled = 0; | |
13970 | break; | |
13971 | } | |
13972 | } | |
0d381245 VP |
13973 | } |
13974 | } | |
13975 | } | |
fe3f5fa8 | 13976 | |
8d3788bd VP |
13977 | if (!locations_are_equal (existing_locations, b->loc)) |
13978 | observer_notify_breakpoint_modified (b); | |
13979 | ||
b60e7edf | 13980 | update_global_location_list (1); |
fe3f5fa8 VP |
13981 | } |
13982 | ||
ef23e705 TJB |
13983 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
13984 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
13985 | ||
13986 | static struct symtabs_and_lines | |
13987 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
13988 | { | |
13989 | char *s; | |
02d20e4a | 13990 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 13991 | volatile struct gdb_exception e; |
ef23e705 | 13992 | |
983af33b | 13993 | gdb_assert (b->ops != NULL); |
ef23e705 | 13994 | s = addr_string; |
ef23e705 TJB |
13995 | |
13996 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13997 | { | |
983af33b | 13998 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
13999 | } |
14000 | if (e.reason < 0) | |
14001 | { | |
14002 | int not_found_and_ok = 0; | |
14003 | /* For pending breakpoints, it's expected that parsing will | |
14004 | fail until the right shared library is loaded. User has | |
14005 | already told to create pending breakpoints and don't need | |
14006 | extra messages. If breakpoint is in bp_shlib_disabled | |
14007 | state, then user already saw the message about that | |
14008 | breakpoint being disabled, and don't want to see more | |
14009 | errors. */ | |
58438ac1 | 14010 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14011 | && (b->condition_not_parsed |
14012 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14013 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14014 | || b->enable_state == bp_disabled)) |
14015 | not_found_and_ok = 1; | |
14016 | ||
14017 | if (!not_found_and_ok) | |
14018 | { | |
14019 | /* We surely don't want to warn about the same breakpoint | |
14020 | 10 times. One solution, implemented here, is disable | |
14021 | the breakpoint on error. Another solution would be to | |
14022 | have separate 'warning emitted' flag. Since this | |
14023 | happens only when a binary has changed, I don't know | |
14024 | which approach is better. */ | |
14025 | b->enable_state = bp_disabled; | |
14026 | throw_exception (e); | |
14027 | } | |
14028 | } | |
14029 | ||
58438ac1 | 14030 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 14031 | { |
f8eba3c6 | 14032 | int i; |
ef23e705 | 14033 | |
f8eba3c6 TT |
14034 | for (i = 0; i < sals.nelts; ++i) |
14035 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
14036 | if (b->condition_not_parsed && s && s[0]) |
14037 | { | |
ed1d1739 KS |
14038 | char *cond_string, *extra_string; |
14039 | int thread, task; | |
ef23e705 TJB |
14040 | |
14041 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
14042 | &cond_string, &thread, &task, |
14043 | &extra_string); | |
ef23e705 TJB |
14044 | if (cond_string) |
14045 | b->cond_string = cond_string; | |
14046 | b->thread = thread; | |
14047 | b->task = task; | |
e7e0cddf SS |
14048 | if (extra_string) |
14049 | b->extra_string = extra_string; | |
ef23e705 TJB |
14050 | b->condition_not_parsed = 0; |
14051 | } | |
14052 | ||
983af33b | 14053 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14054 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14055 | |
58438ac1 TT |
14056 | *found = 1; |
14057 | } | |
14058 | else | |
14059 | *found = 0; | |
ef23e705 TJB |
14060 | |
14061 | return sals; | |
14062 | } | |
14063 | ||
348d480f PA |
14064 | /* The default re_set method, for typical hardware or software |
14065 | breakpoints. Reevaluate the breakpoint and recreate its | |
14066 | locations. */ | |
14067 | ||
14068 | static void | |
28010a5d | 14069 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14070 | { |
14071 | int found; | |
f1310107 | 14072 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14073 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14074 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
14075 | |
14076 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
14077 | if (found) | |
14078 | { | |
14079 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14080 | expanded = sals; |
ef23e705 TJB |
14081 | } |
14082 | ||
f1310107 TJB |
14083 | if (b->addr_string_range_end) |
14084 | { | |
14085 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
14086 | if (found) | |
14087 | { | |
14088 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14089 | expanded_end = sals_end; |
f1310107 TJB |
14090 | } |
14091 | } | |
14092 | ||
14093 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14094 | } |
14095 | ||
983af33b SDJ |
14096 | /* Default method for creating SALs from an address string. It basically |
14097 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14098 | ||
14099 | static void | |
14100 | create_sals_from_address_default (char **arg, | |
14101 | struct linespec_result *canonical, | |
14102 | enum bptype type_wanted, | |
14103 | char *addr_start, char **copy_arg) | |
14104 | { | |
14105 | parse_breakpoint_sals (arg, canonical); | |
14106 | } | |
14107 | ||
14108 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14109 | function for the `create_breakpoints_sal' method of | |
14110 | breakpoint_ops. */ | |
14111 | ||
14112 | static void | |
14113 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14114 | struct linespec_result *canonical, | |
14115 | struct linespec_sals *lsal, | |
14116 | char *cond_string, | |
e7e0cddf | 14117 | char *extra_string, |
983af33b SDJ |
14118 | enum bptype type_wanted, |
14119 | enum bpdisp disposition, | |
14120 | int thread, | |
14121 | int task, int ignore_count, | |
14122 | const struct breakpoint_ops *ops, | |
14123 | int from_tty, int enabled, | |
44f238bb | 14124 | int internal, unsigned flags) |
983af33b SDJ |
14125 | { |
14126 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14127 | extra_string, |
983af33b SDJ |
14128 | type_wanted, disposition, |
14129 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14130 | enabled, internal, flags); |
983af33b SDJ |
14131 | } |
14132 | ||
14133 | /* Decode the line represented by S by calling decode_line_full. This is the | |
14134 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
14135 | ||
14136 | static void | |
14137 | decode_linespec_default (struct breakpoint *b, char **s, | |
14138 | struct symtabs_and_lines *sals) | |
14139 | { | |
14140 | struct linespec_result canonical; | |
14141 | ||
14142 | init_linespec_result (&canonical); | |
14143 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
14144 | (struct symtab *) NULL, 0, | |
14145 | &canonical, multiple_symbols_all, | |
14146 | b->filter); | |
14147 | ||
14148 | /* We should get 0 or 1 resulting SALs. */ | |
14149 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14150 | ||
14151 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14152 | { | |
14153 | struct linespec_sals *lsal; | |
14154 | ||
14155 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14156 | *sals = lsal->sals; | |
14157 | /* Arrange it so the destructor does not free the | |
14158 | contents. */ | |
14159 | lsal->sals.sals = NULL; | |
14160 | } | |
14161 | ||
14162 | destroy_linespec_result (&canonical); | |
14163 | } | |
14164 | ||
28010a5d PA |
14165 | /* Prepare the global context for a re-set of breakpoint B. */ |
14166 | ||
14167 | static struct cleanup * | |
14168 | prepare_re_set_context (struct breakpoint *b) | |
14169 | { | |
14170 | struct cleanup *cleanups; | |
14171 | ||
14172 | input_radix = b->input_radix; | |
14173 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14174 | if (b->pspace != NULL) |
14175 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14176 | set_language (b->language); |
14177 | ||
14178 | return cleanups; | |
ef23e705 TJB |
14179 | } |
14180 | ||
c906108c SS |
14181 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14182 | The value we return ends up being the return value from catch_errors. | |
14183 | Unused in this case. */ | |
14184 | ||
14185 | static int | |
4efb68b1 | 14186 | breakpoint_re_set_one (void *bint) |
c906108c | 14187 | { |
4a64f543 | 14188 | /* Get past catch_errs. */ |
53a5351d | 14189 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14190 | struct cleanup *cleanups; |
c906108c | 14191 | |
348d480f PA |
14192 | cleanups = prepare_re_set_context (b); |
14193 | b->ops->re_set (b); | |
14194 | do_cleanups (cleanups); | |
c906108c SS |
14195 | return 0; |
14196 | } | |
14197 | ||
69de3c6a | 14198 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14199 | void |
69de3c6a | 14200 | breakpoint_re_set (void) |
c906108c | 14201 | { |
35df4500 | 14202 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14203 | enum language save_language; |
14204 | int save_input_radix; | |
6c95b8df | 14205 | struct cleanup *old_chain; |
c5aa993b | 14206 | |
c906108c SS |
14207 | save_language = current_language->la_language; |
14208 | save_input_radix = input_radix; | |
6c95b8df PA |
14209 | old_chain = save_current_program_space (); |
14210 | ||
35df4500 | 14211 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14212 | { |
4a64f543 | 14213 | /* Format possible error msg. */ |
fe3f5fa8 | 14214 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14215 | b->number); |
14216 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14217 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14218 | do_cleanups (cleanups); |
c5aa993b | 14219 | } |
c906108c SS |
14220 | set_language (save_language); |
14221 | input_radix = save_input_radix; | |
e62c965a | 14222 | |
0756c555 | 14223 | jit_breakpoint_re_set (); |
4efc6507 | 14224 | |
6c95b8df PA |
14225 | do_cleanups (old_chain); |
14226 | ||
af02033e PP |
14227 | create_overlay_event_breakpoint (); |
14228 | create_longjmp_master_breakpoint (); | |
14229 | create_std_terminate_master_breakpoint (); | |
186c406b | 14230 | create_exception_master_breakpoint (); |
1bfeeb0f JL |
14231 | |
14232 | /* While we're at it, reset the skip list too. */ | |
14233 | skip_re_set (); | |
c906108c SS |
14234 | } |
14235 | \f | |
c906108c SS |
14236 | /* Reset the thread number of this breakpoint: |
14237 | ||
14238 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14239 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14240 | void |
fba45db2 | 14241 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14242 | { |
14243 | if (b->thread != -1) | |
14244 | { | |
39f77062 KB |
14245 | if (in_thread_list (inferior_ptid)) |
14246 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14247 | |
14248 | /* We're being called after following a fork. The new fork is | |
14249 | selected as current, and unless this was a vfork will have a | |
14250 | different program space from the original thread. Reset that | |
14251 | as well. */ | |
14252 | b->loc->pspace = current_program_space; | |
c906108c SS |
14253 | } |
14254 | } | |
14255 | ||
03ac34d5 MS |
14256 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14257 | If from_tty is nonzero, it prints a message to that effect, | |
14258 | which ends with a period (no newline). */ | |
14259 | ||
c906108c | 14260 | void |
fba45db2 | 14261 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14262 | { |
52f0bd74 | 14263 | struct breakpoint *b; |
c906108c SS |
14264 | |
14265 | if (count < 0) | |
14266 | count = 0; | |
14267 | ||
14268 | ALL_BREAKPOINTS (b) | |
14269 | if (b->number == bptnum) | |
c5aa993b | 14270 | { |
d77f58be SS |
14271 | if (is_tracepoint (b)) |
14272 | { | |
14273 | if (from_tty && count != 0) | |
14274 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14275 | bptnum); | |
14276 | return; | |
14277 | } | |
14278 | ||
c5aa993b | 14279 | b->ignore_count = count; |
221ea385 KS |
14280 | if (from_tty) |
14281 | { | |
14282 | if (count == 0) | |
3e43a32a MS |
14283 | printf_filtered (_("Will stop next time " |
14284 | "breakpoint %d is reached."), | |
221ea385 KS |
14285 | bptnum); |
14286 | else if (count == 1) | |
a3f17187 | 14287 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14288 | bptnum); |
14289 | else | |
3e43a32a MS |
14290 | printf_filtered (_("Will ignore next %d " |
14291 | "crossings of breakpoint %d."), | |
221ea385 KS |
14292 | count, bptnum); |
14293 | } | |
c5aa993b | 14294 | breakpoints_changed (); |
8d3788bd | 14295 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14296 | return; |
14297 | } | |
c906108c | 14298 | |
8a3fe4f8 | 14299 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14300 | } |
14301 | ||
c906108c SS |
14302 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14303 | ||
14304 | static void | |
fba45db2 | 14305 | ignore_command (char *args, int from_tty) |
c906108c SS |
14306 | { |
14307 | char *p = args; | |
52f0bd74 | 14308 | int num; |
c906108c SS |
14309 | |
14310 | if (p == 0) | |
e2e0b3e5 | 14311 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14312 | |
c906108c | 14313 | num = get_number (&p); |
5c44784c | 14314 | if (num == 0) |
8a3fe4f8 | 14315 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14316 | if (*p == 0) |
8a3fe4f8 | 14317 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14318 | |
14319 | set_ignore_count (num, | |
14320 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14321 | from_tty); | |
221ea385 KS |
14322 | if (from_tty) |
14323 | printf_filtered ("\n"); | |
c906108c SS |
14324 | } |
14325 | \f | |
14326 | /* Call FUNCTION on each of the breakpoints | |
14327 | whose numbers are given in ARGS. */ | |
14328 | ||
14329 | static void | |
95a42b64 TT |
14330 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14331 | void *), | |
14332 | void *data) | |
c906108c | 14333 | { |
52f0bd74 AC |
14334 | int num; |
14335 | struct breakpoint *b, *tmp; | |
11cf8741 | 14336 | int match; |
197f0a60 | 14337 | struct get_number_or_range_state state; |
c906108c | 14338 | |
197f0a60 | 14339 | if (args == 0) |
e2e0b3e5 | 14340 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14341 | |
197f0a60 TT |
14342 | init_number_or_range (&state, args); |
14343 | ||
14344 | while (!state.finished) | |
c906108c | 14345 | { |
197f0a60 TT |
14346 | char *p = state.string; |
14347 | ||
11cf8741 | 14348 | match = 0; |
c5aa993b | 14349 | |
197f0a60 | 14350 | num = get_number_or_range (&state); |
5c44784c | 14351 | if (num == 0) |
c5aa993b | 14352 | { |
8a3fe4f8 | 14353 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14354 | } |
14355 | else | |
14356 | { | |
14357 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14358 | if (b->number == num) | |
14359 | { | |
11cf8741 | 14360 | match = 1; |
cdac0397 | 14361 | function (b, data); |
11cf8741 | 14362 | break; |
5c44784c | 14363 | } |
11cf8741 | 14364 | if (match == 0) |
a3f17187 | 14365 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14366 | } |
c906108c SS |
14367 | } |
14368 | } | |
14369 | ||
0d381245 VP |
14370 | static struct bp_location * |
14371 | find_location_by_number (char *number) | |
14372 | { | |
14373 | char *dot = strchr (number, '.'); | |
14374 | char *p1; | |
14375 | int bp_num; | |
14376 | int loc_num; | |
14377 | struct breakpoint *b; | |
14378 | struct bp_location *loc; | |
14379 | ||
14380 | *dot = '\0'; | |
14381 | ||
14382 | p1 = number; | |
197f0a60 | 14383 | bp_num = get_number (&p1); |
0d381245 VP |
14384 | if (bp_num == 0) |
14385 | error (_("Bad breakpoint number '%s'"), number); | |
14386 | ||
14387 | ALL_BREAKPOINTS (b) | |
14388 | if (b->number == bp_num) | |
14389 | { | |
14390 | break; | |
14391 | } | |
14392 | ||
14393 | if (!b || b->number != bp_num) | |
14394 | error (_("Bad breakpoint number '%s'"), number); | |
14395 | ||
14396 | p1 = dot+1; | |
197f0a60 | 14397 | loc_num = get_number (&p1); |
0d381245 VP |
14398 | if (loc_num == 0) |
14399 | error (_("Bad breakpoint location number '%s'"), number); | |
14400 | ||
14401 | --loc_num; | |
14402 | loc = b->loc; | |
14403 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14404 | ; | |
14405 | if (!loc) | |
14406 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14407 | ||
14408 | return loc; | |
14409 | } | |
14410 | ||
14411 | ||
1900040c MS |
14412 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14413 | If from_tty is nonzero, it prints a message to that effect, | |
14414 | which ends with a period (no newline). */ | |
14415 | ||
c906108c | 14416 | void |
fba45db2 | 14417 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14418 | { |
14419 | /* Never disable a watchpoint scope breakpoint; we want to | |
14420 | hit them when we leave scope so we can delete both the | |
14421 | watchpoint and its scope breakpoint at that time. */ | |
14422 | if (bpt->type == bp_watchpoint_scope) | |
14423 | return; | |
14424 | ||
c2c6d25f | 14425 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 14426 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
14427 | return; |
14428 | ||
b5de0fa7 | 14429 | bpt->enable_state = bp_disabled; |
c906108c | 14430 | |
b775012e LM |
14431 | /* Mark breakpoint locations modified. */ |
14432 | mark_breakpoint_modified (bpt); | |
14433 | ||
d248b706 KY |
14434 | if (target_supports_enable_disable_tracepoint () |
14435 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14436 | { | |
14437 | struct bp_location *location; | |
14438 | ||
14439 | for (location = bpt->loc; location; location = location->next) | |
14440 | target_disable_tracepoint (location); | |
14441 | } | |
14442 | ||
b60e7edf | 14443 | update_global_location_list (0); |
c906108c | 14444 | |
8d3788bd | 14445 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14446 | } |
14447 | ||
51be5b68 PA |
14448 | /* A callback for iterate_over_related_breakpoints. */ |
14449 | ||
14450 | static void | |
14451 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14452 | { | |
14453 | disable_breakpoint (b); | |
14454 | } | |
14455 | ||
95a42b64 TT |
14456 | /* A callback for map_breakpoint_numbers that calls |
14457 | disable_breakpoint. */ | |
14458 | ||
14459 | static void | |
14460 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14461 | { | |
51be5b68 | 14462 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14463 | } |
14464 | ||
c906108c | 14465 | static void |
fba45db2 | 14466 | disable_command (char *args, int from_tty) |
c906108c | 14467 | { |
c906108c | 14468 | if (args == 0) |
46c6471b PA |
14469 | { |
14470 | struct breakpoint *bpt; | |
14471 | ||
14472 | ALL_BREAKPOINTS (bpt) | |
14473 | if (user_breakpoint_p (bpt)) | |
14474 | disable_breakpoint (bpt); | |
14475 | } | |
0d381245 VP |
14476 | else if (strchr (args, '.')) |
14477 | { | |
14478 | struct bp_location *loc = find_location_by_number (args); | |
14479 | if (loc) | |
d248b706 | 14480 | { |
b775012e LM |
14481 | if (loc->enabled) |
14482 | { | |
14483 | loc->enabled = 0; | |
14484 | mark_breakpoint_location_modified (loc); | |
14485 | } | |
d248b706 KY |
14486 | if (target_supports_enable_disable_tracepoint () |
14487 | && current_trace_status ()->running && loc->owner | |
14488 | && is_tracepoint (loc->owner)) | |
14489 | target_disable_tracepoint (loc); | |
14490 | } | |
b60e7edf | 14491 | update_global_location_list (0); |
0d381245 | 14492 | } |
c906108c | 14493 | else |
95a42b64 | 14494 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
14495 | } |
14496 | ||
14497 | static void | |
816338b5 SS |
14498 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14499 | int count) | |
c906108c | 14500 | { |
afe38095 | 14501 | int target_resources_ok; |
c906108c SS |
14502 | |
14503 | if (bpt->type == bp_hardware_breakpoint) | |
14504 | { | |
14505 | int i; | |
c5aa993b | 14506 | i = hw_breakpoint_used_count (); |
53a5351d | 14507 | target_resources_ok = |
d92524f1 | 14508 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14509 | i + 1, 0); |
c906108c | 14510 | if (target_resources_ok == 0) |
8a3fe4f8 | 14511 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14512 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14513 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14514 | } |
14515 | ||
cc60f2e3 | 14516 | if (is_watchpoint (bpt)) |
c906108c | 14517 | { |
d07205c2 JK |
14518 | /* Initialize it just to avoid a GCC false warning. */ |
14519 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 14520 | volatile struct gdb_exception e; |
dde02812 ES |
14521 | |
14522 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 14523 | { |
3a5c3e22 PA |
14524 | struct watchpoint *w = (struct watchpoint *) bpt; |
14525 | ||
1e718ff1 TJB |
14526 | orig_enable_state = bpt->enable_state; |
14527 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14528 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14529 | } |
dde02812 | 14530 | if (e.reason < 0) |
c5aa993b | 14531 | { |
1e718ff1 | 14532 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14533 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14534 | bpt->number); | |
14535 | return; | |
c5aa993b | 14536 | } |
c906108c | 14537 | } |
0101ce28 | 14538 | |
b4c291bb KH |
14539 | if (bpt->enable_state != bp_permanent) |
14540 | bpt->enable_state = bp_enabled; | |
d248b706 | 14541 | |
b775012e LM |
14542 | bpt->enable_state = bp_enabled; |
14543 | ||
14544 | /* Mark breakpoint locations modified. */ | |
14545 | mark_breakpoint_modified (bpt); | |
14546 | ||
d248b706 KY |
14547 | if (target_supports_enable_disable_tracepoint () |
14548 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14549 | { | |
14550 | struct bp_location *location; | |
14551 | ||
14552 | for (location = bpt->loc; location; location = location->next) | |
14553 | target_enable_tracepoint (location); | |
14554 | } | |
14555 | ||
b4c291bb | 14556 | bpt->disposition = disposition; |
816338b5 | 14557 | bpt->enable_count = count; |
b60e7edf | 14558 | update_global_location_list (1); |
b4c291bb KH |
14559 | breakpoints_changed (); |
14560 | ||
8d3788bd | 14561 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14562 | } |
14563 | ||
fe3f5fa8 | 14564 | |
c906108c | 14565 | void |
fba45db2 | 14566 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14567 | { |
816338b5 | 14568 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14569 | } |
14570 | ||
14571 | static void | |
14572 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14573 | { | |
14574 | enable_breakpoint (bpt); | |
c906108c SS |
14575 | } |
14576 | ||
95a42b64 TT |
14577 | /* A callback for map_breakpoint_numbers that calls |
14578 | enable_breakpoint. */ | |
14579 | ||
14580 | static void | |
14581 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14582 | { | |
51be5b68 | 14583 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14584 | } |
14585 | ||
c906108c SS |
14586 | /* The enable command enables the specified breakpoints (or all defined |
14587 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14588 | in stopping the inferior. */ |
c906108c | 14589 | |
c906108c | 14590 | static void |
fba45db2 | 14591 | enable_command (char *args, int from_tty) |
c906108c | 14592 | { |
c906108c | 14593 | if (args == 0) |
46c6471b PA |
14594 | { |
14595 | struct breakpoint *bpt; | |
14596 | ||
14597 | ALL_BREAKPOINTS (bpt) | |
14598 | if (user_breakpoint_p (bpt)) | |
14599 | enable_breakpoint (bpt); | |
14600 | } | |
0d381245 VP |
14601 | else if (strchr (args, '.')) |
14602 | { | |
14603 | struct bp_location *loc = find_location_by_number (args); | |
14604 | if (loc) | |
d248b706 | 14605 | { |
b775012e LM |
14606 | if (!loc->enabled) |
14607 | { | |
14608 | loc->enabled = 1; | |
14609 | mark_breakpoint_location_modified (loc); | |
14610 | } | |
d248b706 KY |
14611 | if (target_supports_enable_disable_tracepoint () |
14612 | && current_trace_status ()->running && loc->owner | |
14613 | && is_tracepoint (loc->owner)) | |
14614 | target_enable_tracepoint (loc); | |
14615 | } | |
b60e7edf | 14616 | update_global_location_list (1); |
0d381245 | 14617 | } |
c906108c | 14618 | else |
95a42b64 | 14619 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
14620 | } |
14621 | ||
816338b5 SS |
14622 | /* This struct packages up disposition data for application to multiple |
14623 | breakpoints. */ | |
14624 | ||
14625 | struct disp_data | |
14626 | { | |
14627 | enum bpdisp disp; | |
14628 | int count; | |
14629 | }; | |
14630 | ||
c906108c | 14631 | static void |
51be5b68 PA |
14632 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14633 | { | |
816338b5 | 14634 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14635 | |
816338b5 | 14636 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14637 | } |
14638 | ||
14639 | static void | |
14640 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14641 | { |
816338b5 | 14642 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14643 | |
14644 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14645 | } |
14646 | ||
c906108c | 14647 | static void |
fba45db2 | 14648 | enable_once_command (char *args, int from_tty) |
c906108c | 14649 | { |
51be5b68 | 14650 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14651 | } |
14652 | ||
816338b5 SS |
14653 | static void |
14654 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14655 | { | |
14656 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14657 | ||
14658 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14659 | } | |
14660 | ||
14661 | static void | |
14662 | enable_count_command (char *args, int from_tty) | |
14663 | { | |
14664 | int count = get_number (&args); | |
14665 | ||
14666 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14667 | } | |
14668 | ||
c906108c | 14669 | static void |
51be5b68 | 14670 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14671 | { |
816338b5 | 14672 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14673 | |
14674 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14675 | } |
14676 | ||
c906108c | 14677 | static void |
fba45db2 | 14678 | enable_delete_command (char *args, int from_tty) |
c906108c | 14679 | { |
51be5b68 | 14680 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14681 | } |
14682 | \f | |
fa8d40ab JJ |
14683 | static void |
14684 | set_breakpoint_cmd (char *args, int from_tty) | |
14685 | { | |
14686 | } | |
14687 | ||
14688 | static void | |
14689 | show_breakpoint_cmd (char *args, int from_tty) | |
14690 | { | |
14691 | } | |
14692 | ||
1f3b5d1b PP |
14693 | /* Invalidate last known value of any hardware watchpoint if |
14694 | the memory which that value represents has been written to by | |
14695 | GDB itself. */ | |
14696 | ||
14697 | static void | |
14698 | invalidate_bp_value_on_memory_change (CORE_ADDR addr, int len, | |
14699 | const bfd_byte *data) | |
14700 | { | |
14701 | struct breakpoint *bp; | |
14702 | ||
14703 | ALL_BREAKPOINTS (bp) | |
14704 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14705 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14706 | { |
3a5c3e22 | 14707 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14708 | |
3a5c3e22 PA |
14709 | if (wp->val_valid && wp->val) |
14710 | { | |
14711 | struct bp_location *loc; | |
14712 | ||
14713 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14714 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14715 | && loc->address + loc->length > addr | |
14716 | && addr + len > loc->address) | |
14717 | { | |
14718 | value_free (wp->val); | |
14719 | wp->val = NULL; | |
14720 | wp->val_valid = 0; | |
14721 | } | |
14722 | } | |
1f3b5d1b PP |
14723 | } |
14724 | } | |
14725 | ||
8181d85f DJ |
14726 | /* Create and insert a raw software breakpoint at PC. Return an |
14727 | identifier, which should be used to remove the breakpoint later. | |
14728 | In general, places which call this should be using something on the | |
14729 | breakpoint chain instead; this function should be eliminated | |
14730 | someday. */ | |
14731 | ||
14732 | void * | |
6c95b8df PA |
14733 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
14734 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
14735 | { |
14736 | struct bp_target_info *bp_tgt; | |
14737 | ||
6c95b8df | 14738 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 14739 | |
6c95b8df | 14740 | bp_tgt->placed_address_space = aspace; |
8181d85f | 14741 | bp_tgt->placed_address = pc; |
6c95b8df | 14742 | |
a6d9a66e | 14743 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
14744 | { |
14745 | /* Could not insert the breakpoint. */ | |
14746 | xfree (bp_tgt); | |
14747 | return NULL; | |
14748 | } | |
14749 | ||
14750 | return bp_tgt; | |
14751 | } | |
14752 | ||
4a64f543 MS |
14753 | /* Remove a breakpoint BP inserted by |
14754 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
14755 | |
14756 | int | |
a6d9a66e | 14757 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
14758 | { |
14759 | struct bp_target_info *bp_tgt = bp; | |
14760 | int ret; | |
14761 | ||
a6d9a66e | 14762 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
14763 | xfree (bp_tgt); |
14764 | ||
14765 | return ret; | |
14766 | } | |
14767 | ||
4a64f543 MS |
14768 | /* One (or perhaps two) breakpoints used for software single |
14769 | stepping. */ | |
8181d85f DJ |
14770 | |
14771 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 14772 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
14773 | |
14774 | /* Create and insert a breakpoint for software single step. */ | |
14775 | ||
14776 | void | |
6c95b8df | 14777 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14778 | struct address_space *aspace, |
14779 | CORE_ADDR next_pc) | |
8181d85f DJ |
14780 | { |
14781 | void **bpt_p; | |
14782 | ||
14783 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
14784 | { |
14785 | bpt_p = &single_step_breakpoints[0]; | |
14786 | single_step_gdbarch[0] = gdbarch; | |
14787 | } | |
8181d85f DJ |
14788 | else |
14789 | { | |
14790 | gdb_assert (single_step_breakpoints[1] == NULL); | |
14791 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 14792 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
14793 | } |
14794 | ||
4a64f543 MS |
14795 | /* NOTE drow/2006-04-11: A future improvement to this function would |
14796 | be to only create the breakpoints once, and actually put them on | |
14797 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
14798 | We could adjust the addresses each time they were needed. Doing | |
14799 | this requires corresponding changes elsewhere where single step | |
14800 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 14801 | |
6c95b8df | 14802 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 14803 | if (*bpt_p == NULL) |
5af949e3 UW |
14804 | error (_("Could not insert single-step breakpoint at %s"), |
14805 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
14806 | } |
14807 | ||
f02253f1 HZ |
14808 | /* Check if the breakpoints used for software single stepping |
14809 | were inserted or not. */ | |
14810 | ||
14811 | int | |
14812 | single_step_breakpoints_inserted (void) | |
14813 | { | |
14814 | return (single_step_breakpoints[0] != NULL | |
14815 | || single_step_breakpoints[1] != NULL); | |
14816 | } | |
14817 | ||
8181d85f DJ |
14818 | /* Remove and delete any breakpoints used for software single step. */ |
14819 | ||
14820 | void | |
14821 | remove_single_step_breakpoints (void) | |
14822 | { | |
14823 | gdb_assert (single_step_breakpoints[0] != NULL); | |
14824 | ||
14825 | /* See insert_single_step_breakpoint for more about this deprecated | |
14826 | call. */ | |
a6d9a66e UW |
14827 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
14828 | single_step_breakpoints[0]); | |
14829 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
14830 | single_step_breakpoints[0] = NULL; |
14831 | ||
14832 | if (single_step_breakpoints[1] != NULL) | |
14833 | { | |
a6d9a66e UW |
14834 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
14835 | single_step_breakpoints[1]); | |
14836 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
14837 | single_step_breakpoints[1] = NULL; |
14838 | } | |
14839 | } | |
14840 | ||
d03285ec UW |
14841 | /* Delete software single step breakpoints without removing them from |
14842 | the inferior. This is intended to be used if the inferior's address | |
14843 | space where they were inserted is already gone, e.g. after exit or | |
14844 | exec. */ | |
14845 | ||
14846 | void | |
14847 | cancel_single_step_breakpoints (void) | |
14848 | { | |
14849 | int i; | |
14850 | ||
14851 | for (i = 0; i < 2; i++) | |
14852 | if (single_step_breakpoints[i]) | |
14853 | { | |
14854 | xfree (single_step_breakpoints[i]); | |
14855 | single_step_breakpoints[i] = NULL; | |
14856 | single_step_gdbarch[i] = NULL; | |
14857 | } | |
14858 | } | |
14859 | ||
14860 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
14861 | removing them. */ | |
14862 | ||
14863 | static void | |
14864 | detach_single_step_breakpoints (void) | |
14865 | { | |
14866 | int i; | |
14867 | ||
14868 | for (i = 0; i < 2; i++) | |
14869 | if (single_step_breakpoints[i]) | |
14870 | target_remove_breakpoint (single_step_gdbarch[i], | |
14871 | single_step_breakpoints[i]); | |
14872 | } | |
14873 | ||
4a64f543 MS |
14874 | /* Check whether a software single-step breakpoint is inserted at |
14875 | PC. */ | |
1aafd4da UW |
14876 | |
14877 | static int | |
cc59ec59 MS |
14878 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
14879 | CORE_ADDR pc) | |
1aafd4da UW |
14880 | { |
14881 | int i; | |
14882 | ||
14883 | for (i = 0; i < 2; i++) | |
14884 | { | |
14885 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
14886 | if (bp_tgt |
14887 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
14888 | bp_tgt->placed_address, | |
14889 | aspace, pc)) | |
1aafd4da UW |
14890 | return 1; |
14891 | } | |
14892 | ||
14893 | return 0; | |
14894 | } | |
14895 | ||
a96d9b2e SDJ |
14896 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
14897 | non-zero otherwise. */ | |
14898 | static int | |
14899 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
14900 | { | |
14901 | if (syscall_catchpoint_p (bp) | |
14902 | && bp->enable_state != bp_disabled | |
14903 | && bp->enable_state != bp_call_disabled) | |
14904 | return 1; | |
14905 | else | |
14906 | return 0; | |
14907 | } | |
14908 | ||
14909 | int | |
14910 | catch_syscall_enabled (void) | |
14911 | { | |
fa3064dd YQ |
14912 | struct catch_syscall_inferior_data *inf_data |
14913 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 14914 | |
fa3064dd | 14915 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
14916 | } |
14917 | ||
14918 | int | |
14919 | catching_syscall_number (int syscall_number) | |
14920 | { | |
14921 | struct breakpoint *bp; | |
14922 | ||
14923 | ALL_BREAKPOINTS (bp) | |
14924 | if (is_syscall_catchpoint_enabled (bp)) | |
14925 | { | |
be5c67c1 PA |
14926 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
14927 | ||
14928 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
14929 | { |
14930 | int i, iter; | |
14931 | for (i = 0; | |
be5c67c1 | 14932 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
14933 | i++) |
14934 | if (syscall_number == iter) | |
14935 | return 1; | |
14936 | } | |
14937 | else | |
14938 | return 1; | |
14939 | } | |
14940 | ||
14941 | return 0; | |
14942 | } | |
14943 | ||
14944 | /* Complete syscall names. Used by "catch syscall". */ | |
49c4e619 | 14945 | static VEC (char_ptr) * |
a96d9b2e SDJ |
14946 | catch_syscall_completer (struct cmd_list_element *cmd, |
14947 | char *text, char *word) | |
14948 | { | |
14949 | const char **list = get_syscall_names (); | |
49c4e619 | 14950 | VEC (char_ptr) *retlist |
c38eea1a | 14951 | = (list == NULL) ? NULL : complete_on_enum (list, text, word); |
cc59ec59 | 14952 | |
c38eea1a MS |
14953 | xfree (list); |
14954 | return retlist; | |
a96d9b2e SDJ |
14955 | } |
14956 | ||
1042e4c0 SS |
14957 | /* Tracepoint-specific operations. */ |
14958 | ||
14959 | /* Set tracepoint count to NUM. */ | |
14960 | static void | |
14961 | set_tracepoint_count (int num) | |
14962 | { | |
14963 | tracepoint_count = num; | |
4fa62494 | 14964 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14965 | } |
14966 | ||
70221824 | 14967 | static void |
1042e4c0 SS |
14968 | trace_command (char *arg, int from_tty) |
14969 | { | |
55aa24fb SDJ |
14970 | struct breakpoint_ops *ops; |
14971 | const char *arg_cp = arg; | |
14972 | ||
14973 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
14974 | ops = &tracepoint_probe_breakpoint_ops; | |
14975 | else | |
14976 | ops = &tracepoint_breakpoint_ops; | |
14977 | ||
8cdf0e15 VP |
14978 | if (create_breakpoint (get_current_arch (), |
14979 | arg, | |
e7e0cddf | 14980 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
14981 | 0 /* tempflag */, |
14982 | bp_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
14983 | 0 /* Ignore count */, |
14984 | pending_break_support, | |
55aa24fb | 14985 | ops, |
8cdf0e15 | 14986 | from_tty, |
84f4c1fe | 14987 | 1 /* enabled */, |
44f238bb | 14988 | 0 /* internal */, 0)) |
fd9b8c24 | 14989 | set_tracepoint_count (breakpoint_count); |
1042e4c0 SS |
14990 | } |
14991 | ||
70221824 | 14992 | static void |
7a697b8d SS |
14993 | ftrace_command (char *arg, int from_tty) |
14994 | { | |
8cdf0e15 VP |
14995 | if (create_breakpoint (get_current_arch (), |
14996 | arg, | |
e7e0cddf | 14997 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
14998 | 0 /* tempflag */, |
14999 | bp_fast_tracepoint /* type_wanted */, | |
15000 | 0 /* Ignore count */, | |
15001 | pending_break_support, | |
348d480f | 15002 | &tracepoint_breakpoint_ops, |
0fb4aa4b | 15003 | from_tty, |
84f4c1fe | 15004 | 1 /* enabled */, |
44f238bb | 15005 | 0 /* internal */, 0)) |
0fb4aa4b PA |
15006 | set_tracepoint_count (breakpoint_count); |
15007 | } | |
15008 | ||
15009 | /* strace command implementation. Creates a static tracepoint. */ | |
15010 | ||
70221824 | 15011 | static void |
0fb4aa4b PA |
15012 | strace_command (char *arg, int from_tty) |
15013 | { | |
983af33b SDJ |
15014 | struct breakpoint_ops *ops; |
15015 | ||
15016 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15017 | or with a normal static tracepoint. */ | |
15018 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
15019 | ops = &strace_marker_breakpoint_ops; | |
15020 | else | |
15021 | ops = &tracepoint_breakpoint_ops; | |
15022 | ||
0fb4aa4b PA |
15023 | if (create_breakpoint (get_current_arch (), |
15024 | arg, | |
e7e0cddf | 15025 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b PA |
15026 | 0 /* tempflag */, |
15027 | bp_static_tracepoint /* type_wanted */, | |
8cdf0e15 VP |
15028 | 0 /* Ignore count */, |
15029 | pending_break_support, | |
983af33b | 15030 | ops, |
8cdf0e15 | 15031 | from_tty, |
84f4c1fe | 15032 | 1 /* enabled */, |
44f238bb | 15033 | 0 /* internal */, 0)) |
fd9b8c24 | 15034 | set_tracepoint_count (breakpoint_count); |
7a697b8d SS |
15035 | } |
15036 | ||
409873ef SS |
15037 | /* Set up a fake reader function that gets command lines from a linked |
15038 | list that was acquired during tracepoint uploading. */ | |
15039 | ||
15040 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15041 | static int next_cmd; |
409873ef SS |
15042 | |
15043 | static char * | |
15044 | read_uploaded_action (void) | |
15045 | { | |
15046 | char *rslt; | |
15047 | ||
3149d8c1 | 15048 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15049 | |
3149d8c1 | 15050 | next_cmd++; |
409873ef SS |
15051 | |
15052 | return rslt; | |
15053 | } | |
15054 | ||
00bf0b85 SS |
15055 | /* Given information about a tracepoint as recorded on a target (which |
15056 | can be either a live system or a trace file), attempt to create an | |
15057 | equivalent GDB tracepoint. This is not a reliable process, since | |
15058 | the target does not necessarily have all the information used when | |
15059 | the tracepoint was originally defined. */ | |
15060 | ||
d9b3f62e | 15061 | struct tracepoint * |
00bf0b85 | 15062 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15063 | { |
409873ef | 15064 | char *addr_str, small_buf[100]; |
d9b3f62e | 15065 | struct tracepoint *tp; |
fd9b8c24 | 15066 | |
409873ef SS |
15067 | if (utp->at_string) |
15068 | addr_str = utp->at_string; | |
15069 | else | |
15070 | { | |
15071 | /* In the absence of a source location, fall back to raw | |
15072 | address. Since there is no way to confirm that the address | |
15073 | means the same thing as when the trace was started, warn the | |
15074 | user. */ | |
3e43a32a MS |
15075 | warning (_("Uploaded tracepoint %d has no " |
15076 | "source location, using raw address"), | |
409873ef SS |
15077 | utp->number); |
15078 | sprintf (small_buf, "*%s", hex_string (utp->addr)); | |
15079 | addr_str = small_buf; | |
15080 | } | |
15081 | ||
15082 | /* There's not much we can do with a sequence of bytecodes. */ | |
15083 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15084 | warning (_("Uploaded tracepoint %d condition " |
15085 | "has no source form, ignoring it"), | |
409873ef | 15086 | utp->number); |
d5551862 | 15087 | |
8cdf0e15 | 15088 | if (!create_breakpoint (get_current_arch (), |
409873ef | 15089 | addr_str, |
e7e0cddf SS |
15090 | utp->cond_string, -1, NULL, |
15091 | 0 /* parse cond/thread */, | |
8cdf0e15 | 15092 | 0 /* tempflag */, |
0fb4aa4b | 15093 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15094 | 0 /* Ignore count */, |
15095 | pending_break_support, | |
348d480f | 15096 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15097 | 0 /* from_tty */, |
84f4c1fe | 15098 | utp->enabled /* enabled */, |
44f238bb PA |
15099 | 0 /* internal */, |
15100 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
15101 | return NULL; |
15102 | ||
00bf0b85 SS |
15103 | set_tracepoint_count (breakpoint_count); |
15104 | ||
409873ef | 15105 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15106 | tp = get_tracepoint (tracepoint_count); |
15107 | gdb_assert (tp != NULL); | |
d5551862 | 15108 | |
00bf0b85 SS |
15109 | if (utp->pass > 0) |
15110 | { | |
d9b3f62e | 15111 | sprintf (small_buf, "%d %d", utp->pass, tp->base.number); |
00bf0b85 | 15112 | |
409873ef | 15113 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15114 | } |
15115 | ||
409873ef SS |
15116 | /* If we have uploaded versions of the original commands, set up a |
15117 | special-purpose "reader" function and call the usual command line | |
15118 | reader, then pass the result to the breakpoint command-setting | |
15119 | function. */ | |
3149d8c1 | 15120 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15121 | { |
409873ef | 15122 | struct command_line *cmd_list; |
00bf0b85 | 15123 | |
409873ef | 15124 | this_utp = utp; |
3149d8c1 | 15125 | next_cmd = 0; |
d5551862 | 15126 | |
409873ef SS |
15127 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15128 | ||
d9b3f62e | 15129 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15130 | } |
3149d8c1 SS |
15131 | else if (!VEC_empty (char_ptr, utp->actions) |
15132 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15133 | warning (_("Uploaded tracepoint %d actions " |
15134 | "have no source form, ignoring them"), | |
409873ef | 15135 | utp->number); |
00bf0b85 | 15136 | |
f196051f SS |
15137 | /* Copy any status information that might be available. */ |
15138 | tp->base.hit_count = utp->hit_count; | |
15139 | tp->traceframe_usage = utp->traceframe_usage; | |
15140 | ||
00bf0b85 | 15141 | return tp; |
d9b3f62e | 15142 | } |
00bf0b85 | 15143 | |
1042e4c0 SS |
15144 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15145 | omitted. */ | |
15146 | ||
15147 | static void | |
e5a67952 | 15148 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15149 | { |
79a45e25 | 15150 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15151 | int num_printed; |
1042e4c0 | 15152 | |
e5a67952 | 15153 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15154 | |
15155 | if (num_printed == 0) | |
1042e4c0 | 15156 | { |
e5a67952 | 15157 | if (args == NULL || *args == '\0') |
d77f58be SS |
15158 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15159 | else | |
e5a67952 | 15160 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15161 | } |
ad443146 SS |
15162 | |
15163 | default_collect_info (); | |
1042e4c0 SS |
15164 | } |
15165 | ||
4a64f543 | 15166 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15167 | Not supported by all targets. */ |
15168 | static void | |
15169 | enable_trace_command (char *args, int from_tty) | |
15170 | { | |
15171 | enable_command (args, from_tty); | |
15172 | } | |
15173 | ||
4a64f543 | 15174 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15175 | Not supported by all targets. */ |
15176 | static void | |
15177 | disable_trace_command (char *args, int from_tty) | |
15178 | { | |
15179 | disable_command (args, from_tty); | |
15180 | } | |
15181 | ||
4a64f543 | 15182 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15183 | static void |
15184 | delete_trace_command (char *arg, int from_tty) | |
15185 | { | |
35df4500 | 15186 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15187 | |
15188 | dont_repeat (); | |
15189 | ||
15190 | if (arg == 0) | |
15191 | { | |
15192 | int breaks_to_delete = 0; | |
15193 | ||
15194 | /* Delete all breakpoints if no argument. | |
15195 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15196 | have to be deleted with an explicit breakpoint number |
15197 | argument. */ | |
1042e4c0 | 15198 | ALL_TRACEPOINTS (b) |
46c6471b | 15199 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15200 | { |
15201 | breaks_to_delete = 1; | |
15202 | break; | |
15203 | } | |
1042e4c0 SS |
15204 | |
15205 | /* Ask user only if there are some breakpoints to delete. */ | |
15206 | if (!from_tty | |
15207 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15208 | { | |
35df4500 | 15209 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15210 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15211 | delete_breakpoint (b); |
1042e4c0 SS |
15212 | } |
15213 | } | |
15214 | else | |
51be5b68 | 15215 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15216 | } |
15217 | ||
197f0a60 TT |
15218 | /* Helper function for trace_pass_command. */ |
15219 | ||
15220 | static void | |
d9b3f62e | 15221 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15222 | { |
d9b3f62e PA |
15223 | tp->pass_count = count; |
15224 | observer_notify_tracepoint_modified (tp->base.number); | |
197f0a60 TT |
15225 | if (from_tty) |
15226 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15227 | tp->base.number, count); |
197f0a60 TT |
15228 | } |
15229 | ||
1042e4c0 SS |
15230 | /* Set passcount for tracepoint. |
15231 | ||
15232 | First command argument is passcount, second is tracepoint number. | |
15233 | If tracepoint number omitted, apply to most recently defined. | |
15234 | Also accepts special argument "all". */ | |
15235 | ||
15236 | static void | |
15237 | trace_pass_command (char *args, int from_tty) | |
15238 | { | |
d9b3f62e | 15239 | struct tracepoint *t1; |
1042e4c0 | 15240 | unsigned int count; |
1042e4c0 SS |
15241 | |
15242 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15243 | error (_("passcount command requires an " |
15244 | "argument (count + optional TP num)")); | |
1042e4c0 | 15245 | |
4a64f543 | 15246 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 SS |
15247 | |
15248 | while (*args && isspace ((int) *args)) | |
15249 | args++; | |
15250 | ||
15251 | if (*args && strncasecmp (args, "all", 3) == 0) | |
15252 | { | |
d9b3f62e PA |
15253 | struct breakpoint *b; |
15254 | ||
1042e4c0 | 15255 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15256 | if (*args) |
15257 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15258 | |
d9b3f62e | 15259 | ALL_TRACEPOINTS (b) |
197f0a60 | 15260 | { |
d9b3f62e | 15261 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15262 | trace_pass_set_count (t1, count, from_tty); |
15263 | } | |
15264 | } | |
15265 | else if (*args == '\0') | |
1042e4c0 | 15266 | { |
197f0a60 | 15267 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 15268 | if (t1) |
197f0a60 TT |
15269 | trace_pass_set_count (t1, count, from_tty); |
15270 | } | |
15271 | else | |
15272 | { | |
15273 | struct get_number_or_range_state state; | |
15274 | ||
15275 | init_number_or_range (&state, args); | |
15276 | while (!state.finished) | |
1042e4c0 | 15277 | { |
197f0a60 TT |
15278 | t1 = get_tracepoint_by_number (&args, &state, 1); |
15279 | if (t1) | |
15280 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15281 | } |
15282 | } | |
1042e4c0 SS |
15283 | } |
15284 | ||
d9b3f62e | 15285 | struct tracepoint * |
1042e4c0 SS |
15286 | get_tracepoint (int num) |
15287 | { | |
15288 | struct breakpoint *t; | |
15289 | ||
15290 | ALL_TRACEPOINTS (t) | |
15291 | if (t->number == num) | |
d9b3f62e | 15292 | return (struct tracepoint *) t; |
1042e4c0 SS |
15293 | |
15294 | return NULL; | |
15295 | } | |
15296 | ||
d5551862 SS |
15297 | /* Find the tracepoint with the given target-side number (which may be |
15298 | different from the tracepoint number after disconnecting and | |
15299 | reconnecting). */ | |
15300 | ||
d9b3f62e | 15301 | struct tracepoint * |
d5551862 SS |
15302 | get_tracepoint_by_number_on_target (int num) |
15303 | { | |
d9b3f62e | 15304 | struct breakpoint *b; |
d5551862 | 15305 | |
d9b3f62e PA |
15306 | ALL_TRACEPOINTS (b) |
15307 | { | |
15308 | struct tracepoint *t = (struct tracepoint *) b; | |
15309 | ||
15310 | if (t->number_on_target == num) | |
15311 | return t; | |
15312 | } | |
d5551862 SS |
15313 | |
15314 | return NULL; | |
15315 | } | |
15316 | ||
1042e4c0 | 15317 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
15318 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
15319 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 15320 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 15321 | struct tracepoint * |
197f0a60 TT |
15322 | get_tracepoint_by_number (char **arg, |
15323 | struct get_number_or_range_state *state, | |
15324 | int optional_p) | |
1042e4c0 SS |
15325 | { |
15326 | extern int tracepoint_count; | |
15327 | struct breakpoint *t; | |
15328 | int tpnum; | |
15329 | char *instring = arg == NULL ? NULL : *arg; | |
15330 | ||
197f0a60 TT |
15331 | if (state) |
15332 | { | |
15333 | gdb_assert (!state->finished); | |
15334 | tpnum = get_number_or_range (state); | |
15335 | } | |
15336 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
15337 | { |
15338 | if (optional_p) | |
15339 | tpnum = tracepoint_count; | |
15340 | else | |
15341 | error_no_arg (_("tracepoint number")); | |
15342 | } | |
15343 | else | |
197f0a60 | 15344 | tpnum = get_number (arg); |
1042e4c0 SS |
15345 | |
15346 | if (tpnum <= 0) | |
15347 | { | |
15348 | if (instring && *instring) | |
15349 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15350 | instring); | |
15351 | else | |
3e43a32a MS |
15352 | printf_filtered (_("Tracepoint argument missing " |
15353 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
15354 | return NULL; |
15355 | } | |
15356 | ||
15357 | ALL_TRACEPOINTS (t) | |
15358 | if (t->number == tpnum) | |
15359 | { | |
d9b3f62e | 15360 | return (struct tracepoint *) t; |
1042e4c0 SS |
15361 | } |
15362 | ||
1042e4c0 SS |
15363 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15364 | return NULL; | |
15365 | } | |
15366 | ||
d9b3f62e PA |
15367 | void |
15368 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15369 | { | |
15370 | if (b->thread != -1) | |
15371 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15372 | ||
15373 | if (b->task != 0) | |
15374 | fprintf_unfiltered (fp, " task %d", b->task); | |
15375 | ||
15376 | fprintf_unfiltered (fp, "\n"); | |
15377 | } | |
15378 | ||
6149aea9 PA |
15379 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15380 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15381 | on each breakpoint and only include the ones for which it returns | |
15382 | non-zero. */ | |
15383 | ||
1042e4c0 | 15384 | static void |
6149aea9 PA |
15385 | save_breakpoints (char *filename, int from_tty, |
15386 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15387 | { |
15388 | struct breakpoint *tp; | |
6149aea9 | 15389 | int any = 0; |
a7bdde9e | 15390 | char *pathname; |
1042e4c0 | 15391 | struct cleanup *cleanup; |
a7bdde9e | 15392 | struct ui_file *fp; |
6149aea9 | 15393 | int extra_trace_bits = 0; |
1042e4c0 | 15394 | |
6149aea9 PA |
15395 | if (filename == 0 || *filename == 0) |
15396 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15397 | |
15398 | /* See if we have anything to save. */ | |
6149aea9 | 15399 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15400 | { |
6149aea9 | 15401 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15402 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15403 | continue; |
15404 | ||
15405 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15406 | if (filter && !filter (tp)) | |
15407 | continue; | |
15408 | ||
15409 | any = 1; | |
15410 | ||
15411 | if (is_tracepoint (tp)) | |
15412 | { | |
15413 | extra_trace_bits = 1; | |
15414 | ||
15415 | /* We can stop searching. */ | |
15416 | break; | |
15417 | } | |
1042e4c0 | 15418 | } |
6149aea9 PA |
15419 | |
15420 | if (!any) | |
1042e4c0 | 15421 | { |
6149aea9 | 15422 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15423 | return; |
15424 | } | |
15425 | ||
6149aea9 | 15426 | pathname = tilde_expand (filename); |
1042e4c0 | 15427 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 15428 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 15429 | if (!fp) |
6149aea9 PA |
15430 | error (_("Unable to open file '%s' for saving (%s)"), |
15431 | filename, safe_strerror (errno)); | |
a7bdde9e | 15432 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15433 | |
6149aea9 PA |
15434 | if (extra_trace_bits) |
15435 | save_trace_state_variables (fp); | |
8bf6485c | 15436 | |
6149aea9 | 15437 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15438 | { |
6149aea9 | 15439 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15440 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15441 | continue; |
8bf6485c | 15442 | |
6149aea9 PA |
15443 | /* If we have a filter, only save the breakpoints it accepts. */ |
15444 | if (filter && !filter (tp)) | |
15445 | continue; | |
15446 | ||
348d480f | 15447 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15448 | |
6149aea9 PA |
15449 | /* Note, we can't rely on tp->number for anything, as we can't |
15450 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15451 | instead. */ | |
15452 | ||
15453 | if (tp->cond_string) | |
15454 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15455 | ||
15456 | if (tp->ignore_count) | |
15457 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15458 | ||
a7bdde9e | 15459 | if (tp->commands) |
1042e4c0 | 15460 | { |
a7bdde9e VP |
15461 | volatile struct gdb_exception ex; |
15462 | ||
6149aea9 | 15463 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15464 | |
79a45e25 | 15465 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 15466 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 15467 | { |
79a45e25 | 15468 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15469 | } |
79a45e25 | 15470 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 15471 | |
a7bdde9e VP |
15472 | if (ex.reason < 0) |
15473 | throw_exception (ex); | |
1042e4c0 | 15474 | |
a7bdde9e | 15475 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15476 | } |
6149aea9 PA |
15477 | |
15478 | if (tp->enable_state == bp_disabled) | |
15479 | fprintf_unfiltered (fp, "disable\n"); | |
15480 | ||
15481 | /* If this is a multi-location breakpoint, check if the locations | |
15482 | should be individually disabled. Watchpoint locations are | |
15483 | special, and not user visible. */ | |
15484 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15485 | { | |
15486 | struct bp_location *loc; | |
15487 | int n = 1; | |
15488 | ||
15489 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15490 | if (!loc->enabled) | |
15491 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15492 | } | |
1042e4c0 | 15493 | } |
8bf6485c | 15494 | |
6149aea9 | 15495 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15496 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15497 | ||
1042e4c0 SS |
15498 | do_cleanups (cleanup); |
15499 | if (from_tty) | |
6149aea9 PA |
15500 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
15501 | } | |
15502 | ||
15503 | /* The `save breakpoints' command. */ | |
15504 | ||
15505 | static void | |
15506 | save_breakpoints_command (char *args, int from_tty) | |
15507 | { | |
15508 | save_breakpoints (args, from_tty, NULL); | |
15509 | } | |
15510 | ||
15511 | /* The `save tracepoints' command. */ | |
15512 | ||
15513 | static void | |
15514 | save_tracepoints_command (char *args, int from_tty) | |
15515 | { | |
15516 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15517 | } |
15518 | ||
15519 | /* Create a vector of all tracepoints. */ | |
15520 | ||
15521 | VEC(breakpoint_p) * | |
eeae04df | 15522 | all_tracepoints (void) |
1042e4c0 SS |
15523 | { |
15524 | VEC(breakpoint_p) *tp_vec = 0; | |
15525 | struct breakpoint *tp; | |
15526 | ||
15527 | ALL_TRACEPOINTS (tp) | |
15528 | { | |
15529 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15530 | } | |
15531 | ||
15532 | return tp_vec; | |
15533 | } | |
15534 | ||
c906108c | 15535 | \f |
4a64f543 MS |
15536 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15537 | commands. It is defined as a macro to prevent duplication. | |
15538 | COMMAND should be a string constant containing the name of the | |
15539 | command. */ | |
31e2b00f | 15540 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15541 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15542 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15543 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
15544 | guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\ | |
31e2b00f AS |
15545 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15546 | If a line number is specified, break at start of code for that line.\n\ | |
15547 | If a function is specified, break at start of code for that function.\n\ | |
15548 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15549 | With no LOCATION, uses current execution address of the selected\n\ |
15550 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15551 | \n\ |
15552 | THREADNUM is the number from \"info threads\".\n\ | |
15553 | CONDITION is a boolean expression.\n\ | |
15554 | \n\ | |
d41c0fc8 PA |
15555 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15556 | conditions are different.\n\ | |
31e2b00f AS |
15557 | \n\ |
15558 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15559 | ||
44feb3ce TT |
15560 | /* List of subcommands for "catch". */ |
15561 | static struct cmd_list_element *catch_cmdlist; | |
15562 | ||
15563 | /* List of subcommands for "tcatch". */ | |
15564 | static struct cmd_list_element *tcatch_cmdlist; | |
15565 | ||
9ac4176b | 15566 | void |
44feb3ce TT |
15567 | add_catch_command (char *name, char *docstring, |
15568 | void (*sfunc) (char *args, int from_tty, | |
15569 | struct cmd_list_element *command), | |
625e8578 | 15570 | completer_ftype *completer, |
44feb3ce TT |
15571 | void *user_data_catch, |
15572 | void *user_data_tcatch) | |
15573 | { | |
15574 | struct cmd_list_element *command; | |
15575 | ||
15576 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15577 | &catch_cmdlist); | |
15578 | set_cmd_sfunc (command, sfunc); | |
15579 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15580 | set_cmd_completer (command, completer); |
44feb3ce TT |
15581 | |
15582 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15583 | &tcatch_cmdlist); | |
15584 | set_cmd_sfunc (command, sfunc); | |
15585 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15586 | set_cmd_completer (command, completer); |
44feb3ce TT |
15587 | } |
15588 | ||
6c95b8df | 15589 | static void |
a79b8f6e | 15590 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 15591 | { |
fa3064dd YQ |
15592 | struct catch_syscall_inferior_data *inf_data |
15593 | = get_catch_syscall_inferior_data (inf); | |
15594 | ||
15595 | inf_data->total_syscalls_count = 0; | |
15596 | inf_data->any_syscall_count = 0; | |
15597 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
15598 | } |
15599 | ||
6149aea9 PA |
15600 | static void |
15601 | save_command (char *arg, int from_tty) | |
15602 | { | |
3e43a32a MS |
15603 | printf_unfiltered (_("\"save\" must be followed by " |
15604 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
15605 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
15606 | } | |
15607 | ||
84f4c1fe PM |
15608 | struct breakpoint * |
15609 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15610 | void *data) | |
15611 | { | |
35df4500 | 15612 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15613 | |
35df4500 | 15614 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15615 | { |
15616 | if ((*callback) (b, data)) | |
15617 | return b; | |
15618 | } | |
15619 | ||
15620 | return NULL; | |
15621 | } | |
15622 | ||
0574c78f GB |
15623 | /* Zero if any of the breakpoint's locations could be a location where |
15624 | functions have been inlined, nonzero otherwise. */ | |
15625 | ||
15626 | static int | |
15627 | is_non_inline_function (struct breakpoint *b) | |
15628 | { | |
15629 | /* The shared library event breakpoint is set on the address of a | |
15630 | non-inline function. */ | |
15631 | if (b->type == bp_shlib_event) | |
15632 | return 1; | |
15633 | ||
15634 | return 0; | |
15635 | } | |
15636 | ||
15637 | /* Nonzero if the specified PC cannot be a location where functions | |
15638 | have been inlined. */ | |
15639 | ||
15640 | int | |
09ac7c10 TT |
15641 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15642 | const struct target_waitstatus *ws) | |
0574c78f GB |
15643 | { |
15644 | struct breakpoint *b; | |
15645 | struct bp_location *bl; | |
15646 | ||
15647 | ALL_BREAKPOINTS (b) | |
15648 | { | |
15649 | if (!is_non_inline_function (b)) | |
15650 | continue; | |
15651 | ||
15652 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15653 | { | |
15654 | if (!bl->shlib_disabled | |
09ac7c10 | 15655 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15656 | return 1; |
15657 | } | |
15658 | } | |
15659 | ||
15660 | return 0; | |
15661 | } | |
15662 | ||
2060206e PA |
15663 | void |
15664 | initialize_breakpoint_ops (void) | |
15665 | { | |
15666 | static int initialized = 0; | |
15667 | ||
15668 | struct breakpoint_ops *ops; | |
15669 | ||
15670 | if (initialized) | |
15671 | return; | |
15672 | initialized = 1; | |
15673 | ||
15674 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15675 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15676 | internal and momentary breakpoints, etc.). */ | |
15677 | ops = &bkpt_base_breakpoint_ops; | |
15678 | *ops = base_breakpoint_ops; | |
15679 | ops->re_set = bkpt_re_set; | |
15680 | ops->insert_location = bkpt_insert_location; | |
15681 | ops->remove_location = bkpt_remove_location; | |
15682 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
15683 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
15684 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
15685 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
15686 | |
15687 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15688 | ops = &bkpt_breakpoint_ops; | |
15689 | *ops = bkpt_base_breakpoint_ops; | |
15690 | ops->re_set = bkpt_re_set; | |
15691 | ops->resources_needed = bkpt_resources_needed; | |
15692 | ops->print_it = bkpt_print_it; | |
15693 | ops->print_mention = bkpt_print_mention; | |
15694 | ops->print_recreate = bkpt_print_recreate; | |
15695 | ||
15696 | /* Ranged breakpoints. */ | |
15697 | ops = &ranged_breakpoint_ops; | |
15698 | *ops = bkpt_breakpoint_ops; | |
15699 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15700 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15701 | ops->print_it = print_it_ranged_breakpoint; | |
15702 | ops->print_one = print_one_ranged_breakpoint; | |
15703 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15704 | ops->print_mention = print_mention_ranged_breakpoint; | |
15705 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15706 | ||
15707 | /* Internal breakpoints. */ | |
15708 | ops = &internal_breakpoint_ops; | |
15709 | *ops = bkpt_base_breakpoint_ops; | |
15710 | ops->re_set = internal_bkpt_re_set; | |
15711 | ops->check_status = internal_bkpt_check_status; | |
15712 | ops->print_it = internal_bkpt_print_it; | |
15713 | ops->print_mention = internal_bkpt_print_mention; | |
15714 | ||
15715 | /* Momentary breakpoints. */ | |
15716 | ops = &momentary_breakpoint_ops; | |
15717 | *ops = bkpt_base_breakpoint_ops; | |
15718 | ops->re_set = momentary_bkpt_re_set; | |
15719 | ops->check_status = momentary_bkpt_check_status; | |
15720 | ops->print_it = momentary_bkpt_print_it; | |
15721 | ops->print_mention = momentary_bkpt_print_mention; | |
15722 | ||
e2e4d78b JK |
15723 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15724 | ops = &longjmp_breakpoint_ops; | |
15725 | *ops = momentary_breakpoint_ops; | |
15726 | ops->dtor = longjmp_bkpt_dtor; | |
15727 | ||
55aa24fb SDJ |
15728 | /* Probe breakpoints. */ |
15729 | ops = &bkpt_probe_breakpoint_ops; | |
15730 | *ops = bkpt_breakpoint_ops; | |
15731 | ops->insert_location = bkpt_probe_insert_location; | |
15732 | ops->remove_location = bkpt_probe_remove_location; | |
15733 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
15734 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
15735 | ||
2060206e PA |
15736 | /* GNU v3 exception catchpoints. */ |
15737 | ops = &gnu_v3_exception_catchpoint_ops; | |
15738 | *ops = bkpt_breakpoint_ops; | |
15739 | ops->print_it = print_it_exception_catchpoint; | |
15740 | ops->print_one = print_one_exception_catchpoint; | |
15741 | ops->print_mention = print_mention_exception_catchpoint; | |
15742 | ops->print_recreate = print_recreate_exception_catchpoint; | |
15743 | ||
15744 | /* Watchpoints. */ | |
15745 | ops = &watchpoint_breakpoint_ops; | |
15746 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15747 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15748 | ops->re_set = re_set_watchpoint; |
15749 | ops->insert_location = insert_watchpoint; | |
15750 | ops->remove_location = remove_watchpoint; | |
15751 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15752 | ops->check_status = check_status_watchpoint; | |
15753 | ops->resources_needed = resources_needed_watchpoint; | |
15754 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15755 | ops->print_it = print_it_watchpoint; | |
15756 | ops->print_mention = print_mention_watchpoint; | |
15757 | ops->print_recreate = print_recreate_watchpoint; | |
15758 | ||
15759 | /* Masked watchpoints. */ | |
15760 | ops = &masked_watchpoint_breakpoint_ops; | |
15761 | *ops = watchpoint_breakpoint_ops; | |
15762 | ops->insert_location = insert_masked_watchpoint; | |
15763 | ops->remove_location = remove_masked_watchpoint; | |
15764 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15765 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15766 | ops->print_it = print_it_masked_watchpoint; | |
15767 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15768 | ops->print_mention = print_mention_masked_watchpoint; | |
15769 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15770 | ||
15771 | /* Tracepoints. */ | |
15772 | ops = &tracepoint_breakpoint_ops; | |
15773 | *ops = base_breakpoint_ops; | |
15774 | ops->re_set = tracepoint_re_set; | |
15775 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15776 | ops->print_one_detail = tracepoint_print_one_detail; | |
15777 | ops->print_mention = tracepoint_print_mention; | |
15778 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
15779 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
15780 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
15781 | ops->decode_linespec = tracepoint_decode_linespec; | |
15782 | ||
55aa24fb SDJ |
15783 | /* Probe tracepoints. */ |
15784 | ops = &tracepoint_probe_breakpoint_ops; | |
15785 | *ops = tracepoint_breakpoint_ops; | |
15786 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
15787 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
15788 | ||
983af33b SDJ |
15789 | /* Static tracepoints with marker (`-m'). */ |
15790 | ops = &strace_marker_breakpoint_ops; | |
15791 | *ops = tracepoint_breakpoint_ops; | |
15792 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
15793 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
15794 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
15795 | |
15796 | /* Fork catchpoints. */ | |
15797 | ops = &catch_fork_breakpoint_ops; | |
15798 | *ops = base_breakpoint_ops; | |
15799 | ops->insert_location = insert_catch_fork; | |
15800 | ops->remove_location = remove_catch_fork; | |
15801 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15802 | ops->print_it = print_it_catch_fork; | |
15803 | ops->print_one = print_one_catch_fork; | |
15804 | ops->print_mention = print_mention_catch_fork; | |
15805 | ops->print_recreate = print_recreate_catch_fork; | |
15806 | ||
15807 | /* Vfork catchpoints. */ | |
15808 | ops = &catch_vfork_breakpoint_ops; | |
15809 | *ops = base_breakpoint_ops; | |
15810 | ops->insert_location = insert_catch_vfork; | |
15811 | ops->remove_location = remove_catch_vfork; | |
15812 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15813 | ops->print_it = print_it_catch_vfork; | |
15814 | ops->print_one = print_one_catch_vfork; | |
15815 | ops->print_mention = print_mention_catch_vfork; | |
15816 | ops->print_recreate = print_recreate_catch_vfork; | |
15817 | ||
15818 | /* Exec catchpoints. */ | |
15819 | ops = &catch_exec_breakpoint_ops; | |
15820 | *ops = base_breakpoint_ops; | |
15821 | ops->dtor = dtor_catch_exec; | |
15822 | ops->insert_location = insert_catch_exec; | |
15823 | ops->remove_location = remove_catch_exec; | |
15824 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15825 | ops->print_it = print_it_catch_exec; | |
15826 | ops->print_one = print_one_catch_exec; | |
15827 | ops->print_mention = print_mention_catch_exec; | |
15828 | ops->print_recreate = print_recreate_catch_exec; | |
15829 | ||
15830 | /* Syscall catchpoints. */ | |
15831 | ops = &catch_syscall_breakpoint_ops; | |
15832 | *ops = base_breakpoint_ops; | |
15833 | ops->dtor = dtor_catch_syscall; | |
15834 | ops->insert_location = insert_catch_syscall; | |
15835 | ops->remove_location = remove_catch_syscall; | |
15836 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
15837 | ops->print_it = print_it_catch_syscall; | |
15838 | ops->print_one = print_one_catch_syscall; | |
15839 | ops->print_mention = print_mention_catch_syscall; | |
15840 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
15841 | |
15842 | /* Solib-related catchpoints. */ | |
15843 | ops = &catch_solib_breakpoint_ops; | |
15844 | *ops = base_breakpoint_ops; | |
15845 | ops->dtor = dtor_catch_solib; | |
15846 | ops->insert_location = insert_catch_solib; | |
15847 | ops->remove_location = remove_catch_solib; | |
15848 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15849 | ops->check_status = check_status_catch_solib; | |
15850 | ops->print_it = print_it_catch_solib; | |
15851 | ops->print_one = print_one_catch_solib; | |
15852 | ops->print_mention = print_mention_catch_solib; | |
15853 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15854 | |
15855 | ops = &dprintf_breakpoint_ops; | |
15856 | *ops = bkpt_base_breakpoint_ops; | |
15857 | ops->re_set = bkpt_re_set; | |
15858 | ops->resources_needed = bkpt_resources_needed; | |
15859 | ops->print_it = bkpt_print_it; | |
15860 | ops->print_mention = bkpt_print_mention; | |
15861 | ops->print_recreate = bkpt_print_recreate; | |
2060206e PA |
15862 | } |
15863 | ||
c906108c | 15864 | void |
fba45db2 | 15865 | _initialize_breakpoint (void) |
c906108c SS |
15866 | { |
15867 | struct cmd_list_element *c; | |
15868 | ||
2060206e PA |
15869 | initialize_breakpoint_ops (); |
15870 | ||
84acb35a | 15871 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 15872 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 15873 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15874 | |
55aa24fb SDJ |
15875 | breakpoint_objfile_key |
15876 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15877 | |
fa3064dd YQ |
15878 | catch_syscall_inferior_data |
15879 | = register_inferior_data_with_cleanup (catch_syscall_inferior_data_cleanup); | |
15880 | ||
c906108c SS |
15881 | breakpoint_chain = 0; |
15882 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15883 | before a breakpoint is set. */ | |
15884 | breakpoint_count = 0; | |
15885 | ||
1042e4c0 SS |
15886 | tracepoint_count = 0; |
15887 | ||
1bedd215 AC |
15888 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15889 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15890 | Usage is `ignore N COUNT'.")); | |
c906108c | 15891 | if (xdb_commands) |
c5aa993b | 15892 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 15893 | |
1bedd215 AC |
15894 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15895 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15896 | Give breakpoint number as argument after \"commands\".\n\ |
15897 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15898 | The commands themselves follow starting on the next line.\n\ | |
15899 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15900 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15901 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15902 | |
d55637df | 15903 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15904 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15905 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15906 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15907 | set_cmd_completer (c, condition_completer); |
c906108c | 15908 | |
1bedd215 | 15909 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15910 | Set a temporary breakpoint.\n\ |
c906108c SS |
15911 | Like \"break\" except the breakpoint is only temporary,\n\ |
15912 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15913 | by using \"enable delete\" on the breakpoint number.\n\ |
15914 | \n" | |
15915 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15916 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15917 | |
1bedd215 | 15918 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15919 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15920 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15921 | some target hardware may not have this support.\n\ |
15922 | \n" | |
15923 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15924 | set_cmd_completer (c, location_completer); |
c906108c | 15925 | |
1bedd215 | 15926 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15927 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15928 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15929 | so it will be deleted when hit.\n\ |
15930 | \n" | |
15931 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15932 | set_cmd_completer (c, location_completer); |
c906108c | 15933 | |
1bedd215 AC |
15934 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15935 | Enable some breakpoints.\n\ | |
c906108c SS |
15936 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15937 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15938 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15939 | With a subcommand you can enable temporarily."), |
c906108c SS |
15940 | &enablelist, "enable ", 1, &cmdlist); |
15941 | if (xdb_commands) | |
1bedd215 AC |
15942 | add_com ("ab", class_breakpoint, enable_command, _("\ |
15943 | Enable some breakpoints.\n\ | |
c906108c SS |
15944 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15945 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15946 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15947 | With a subcommand you can enable temporarily.")); |
c906108c SS |
15948 | |
15949 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15950 | ||
84951ab5 | 15951 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15952 | Enable some breakpoints.\n\ |
c906108c SS |
15953 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15954 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15955 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15956 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15957 | |
1a966eab AC |
15958 | add_cmd ("once", no_class, enable_once_command, _("\ |
15959 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15960 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15961 | &enablebreaklist); |
15962 | ||
1a966eab AC |
15963 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15964 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15965 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15966 | &enablebreaklist); |
15967 | ||
816338b5 SS |
15968 | add_cmd ("count", no_class, enable_count_command, _("\ |
15969 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15970 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15971 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15972 | &enablebreaklist); | |
15973 | ||
1a966eab AC |
15974 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15975 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15976 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15977 | &enablelist); |
15978 | ||
1a966eab AC |
15979 | add_cmd ("once", no_class, enable_once_command, _("\ |
15980 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15981 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
15982 | &enablelist); |
15983 | ||
15984 | add_cmd ("count", no_class, enable_count_command, _("\ | |
15985 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15986 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15987 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
15988 | &enablelist); |
15989 | ||
1bedd215 AC |
15990 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
15991 | Disable some breakpoints.\n\ | |
c906108c SS |
15992 | Arguments are breakpoint numbers with spaces in between.\n\ |
15993 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 15994 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
15995 | &disablelist, "disable ", 1, &cmdlist); |
15996 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
15997 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
15998 | if (xdb_commands) | |
1bedd215 AC |
15999 | add_com ("sb", class_breakpoint, disable_command, _("\ |
16000 | Disable some breakpoints.\n\ | |
c906108c SS |
16001 | Arguments are breakpoint numbers with spaces in between.\n\ |
16002 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16003 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 16004 | |
1a966eab AC |
16005 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16006 | Disable some breakpoints.\n\ | |
c906108c SS |
16007 | Arguments are breakpoint numbers with spaces in between.\n\ |
16008 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16009 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16010 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16011 | &disablelist); |
16012 | ||
1bedd215 AC |
16013 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16014 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16015 | Arguments are breakpoint numbers with spaces in between.\n\ |
16016 | To delete all breakpoints, give no argument.\n\ | |
16017 | \n\ | |
16018 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16019 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16020 | &deletelist, "delete ", 1, &cmdlist); |
16021 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16022 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16023 | if (xdb_commands) |
1bedd215 AC |
16024 | add_com ("db", class_breakpoint, delete_command, _("\ |
16025 | Delete some breakpoints.\n\ | |
c906108c | 16026 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 16027 | To delete all breakpoints, give no argument.\n")); |
c906108c | 16028 | |
1a966eab AC |
16029 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16030 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16031 | Arguments are breakpoint numbers with spaces in between.\n\ |
16032 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16033 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16034 | &deletelist); |
16035 | ||
1bedd215 AC |
16036 | add_com ("clear", class_breakpoint, clear_command, _("\ |
16037 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
16038 | Argument may be line number, function name, or \"*\" and an address.\n\ |
16039 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
16040 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
16041 | If an address is specified, breakpoints at that address are cleared.\n\ |
16042 | \n\ | |
16043 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
16044 | is executing in.\n\ |
16045 | \n\ | |
1bedd215 | 16046 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16047 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16048 | |
1bedd215 | 16049 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
16050 | Set breakpoint at specified line or function.\n" |
16051 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 16052 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16053 | |
c906108c SS |
16054 | add_com_alias ("b", "break", class_run, 1); |
16055 | add_com_alias ("br", "break", class_run, 1); | |
16056 | add_com_alias ("bre", "break", class_run, 1); | |
16057 | add_com_alias ("brea", "break", class_run, 1); | |
16058 | ||
7681d515 PM |
16059 | if (xdb_commands) |
16060 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
16061 | |
16062 | if (dbx_commands) | |
16063 | { | |
1bedd215 AC |
16064 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16065 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16066 | &stoplist, "stop ", 1, &cmdlist); |
16067 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16068 | _("Break in function or address."), &stoplist); |
c5aa993b | 16069 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16070 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16071 | add_com ("status", class_info, breakpoints_info, _("\ |
16072 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16073 | The \"Type\" column indicates one of:\n\ |
16074 | \tbreakpoint - normal breakpoint\n\ | |
16075 | \twatchpoint - watchpoint\n\ | |
16076 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16077 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16078 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16079 | address and file/line number respectively.\n\ |
16080 | \n\ | |
16081 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16082 | are set to the address of the last breakpoint listed unless the command\n\ |
16083 | is prefixed with \"server \".\n\n\ | |
c906108c | 16084 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16085 | breakpoint set.")); |
c906108c SS |
16086 | } |
16087 | ||
1bedd215 | 16088 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16089 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16090 | The \"Type\" column indicates one of:\n\ |
16091 | \tbreakpoint - normal breakpoint\n\ | |
16092 | \twatchpoint - watchpoint\n\ | |
16093 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16094 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16095 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16096 | address and file/line number respectively.\n\ |
16097 | \n\ | |
16098 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16099 | are set to the address of the last breakpoint listed unless the command\n\ |
16100 | is prefixed with \"server \".\n\n\ | |
c906108c | 16101 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16102 | breakpoint set.")); |
c906108c | 16103 | |
6b04bdb7 MS |
16104 | add_info_alias ("b", "breakpoints", 1); |
16105 | ||
c906108c | 16106 | if (xdb_commands) |
1bedd215 AC |
16107 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
16108 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16109 | The \"Type\" column indicates one of:\n\ |
16110 | \tbreakpoint - normal breakpoint\n\ | |
16111 | \twatchpoint - watchpoint\n\ | |
16112 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16113 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16114 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16115 | address and file/line number respectively.\n\ |
16116 | \n\ | |
16117 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16118 | are set to the address of the last breakpoint listed unless the command\n\ |
16119 | is prefixed with \"server \".\n\n\ | |
c906108c | 16120 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16121 | breakpoint set.")); |
c906108c | 16122 | |
1a966eab AC |
16123 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16124 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16125 | The \"Type\" column indicates one of:\n\ |
16126 | \tbreakpoint - normal breakpoint\n\ | |
16127 | \twatchpoint - watchpoint\n\ | |
16128 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16129 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16130 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16131 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16132 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16133 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16134 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16135 | address and file/line number respectively.\n\ |
16136 | \n\ | |
16137 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16138 | are set to the address of the last breakpoint listed unless the command\n\ |
16139 | is prefixed with \"server \".\n\n\ | |
c906108c | 16140 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16141 | breakpoint set."), |
c906108c SS |
16142 | &maintenanceinfolist); |
16143 | ||
44feb3ce TT |
16144 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16145 | Set catchpoints to catch events."), | |
16146 | &catch_cmdlist, "catch ", | |
16147 | 0/*allow-unknown*/, &cmdlist); | |
16148 | ||
16149 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16150 | Set temporary catchpoints to catch events."), | |
16151 | &tcatch_cmdlist, "tcatch ", | |
16152 | 0/*allow-unknown*/, &cmdlist); | |
16153 | ||
16154 | /* Add catch and tcatch sub-commands. */ | |
16155 | add_catch_command ("catch", _("\ | |
88e7d25d | 16156 | Catch an exception, when caught."), |
44feb3ce | 16157 | catch_catch_command, |
a96d9b2e | 16158 | NULL, |
44feb3ce TT |
16159 | CATCH_PERMANENT, |
16160 | CATCH_TEMPORARY); | |
16161 | add_catch_command ("throw", _("\ | |
88e7d25d | 16162 | Catch an exception, when thrown."), |
44feb3ce | 16163 | catch_throw_command, |
a96d9b2e | 16164 | NULL, |
44feb3ce TT |
16165 | CATCH_PERMANENT, |
16166 | CATCH_TEMPORARY); | |
16167 | add_catch_command ("fork", _("Catch calls to fork."), | |
16168 | catch_fork_command_1, | |
a96d9b2e | 16169 | NULL, |
44feb3ce TT |
16170 | (void *) (uintptr_t) catch_fork_permanent, |
16171 | (void *) (uintptr_t) catch_fork_temporary); | |
16172 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16173 | catch_fork_command_1, | |
a96d9b2e | 16174 | NULL, |
44feb3ce TT |
16175 | (void *) (uintptr_t) catch_vfork_permanent, |
16176 | (void *) (uintptr_t) catch_vfork_temporary); | |
16177 | add_catch_command ("exec", _("Catch calls to exec."), | |
16178 | catch_exec_command_1, | |
a96d9b2e SDJ |
16179 | NULL, |
16180 | CATCH_PERMANENT, | |
16181 | CATCH_TEMPORARY); | |
edcc5120 TT |
16182 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16183 | Usage: catch load [REGEX]\n\ | |
16184 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16185 | catch_load_command_1, | |
16186 | NULL, | |
16187 | CATCH_PERMANENT, | |
16188 | CATCH_TEMPORARY); | |
16189 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16190 | Usage: catch unload [REGEX]\n\ | |
16191 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16192 | catch_unload_command_1, | |
16193 | NULL, | |
16194 | CATCH_PERMANENT, | |
16195 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
16196 | add_catch_command ("syscall", _("\ |
16197 | Catch system calls by their names and/or numbers.\n\ | |
16198 | Arguments say which system calls to catch. If no arguments\n\ | |
16199 | are given, every system call will be caught.\n\ | |
16200 | Arguments, if given, should be one or more system call names\n\ | |
16201 | (if your system supports that), or system call numbers."), | |
16202 | catch_syscall_command_1, | |
16203 | catch_syscall_completer, | |
44feb3ce TT |
16204 | CATCH_PERMANENT, |
16205 | CATCH_TEMPORARY); | |
c5aa993b | 16206 | |
1bedd215 AC |
16207 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16208 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16209 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16210 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16211 | an expression changes.\n\ |
16212 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16213 | the memory to which it refers.")); | |
65d12d83 | 16214 | set_cmd_completer (c, expression_completer); |
c906108c | 16215 | |
1bedd215 AC |
16216 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16217 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16218 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16219 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16220 | an expression is read.\n\ |
16221 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16222 | the memory to which it refers.")); | |
65d12d83 | 16223 | set_cmd_completer (c, expression_completer); |
c906108c | 16224 | |
1bedd215 AC |
16225 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16226 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16227 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16228 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16229 | an expression is either read or written.\n\ |
16230 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16231 | the memory to which it refers.")); | |
65d12d83 | 16232 | set_cmd_completer (c, expression_completer); |
c906108c | 16233 | |
d77f58be | 16234 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16235 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16236 | |
920d2a44 AC |
16237 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16238 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16239 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16240 | &can_use_hw_watchpoints, _("\ | |
16241 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16242 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16243 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16244 | such is available. (However, any hardware watchpoints that were\n\ | |
16245 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16246 | hardware.)"), |
16247 | NULL, | |
920d2a44 | 16248 | show_can_use_hw_watchpoints, |
85c07804 | 16249 | &setlist, &showlist); |
c906108c SS |
16250 | |
16251 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16252 | |
1042e4c0 SS |
16253 | /* Tracepoint manipulation commands. */ |
16254 | ||
16255 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16256 | Set a tracepoint at specified line or function.\n\ | |
16257 | \n" | |
16258 | BREAK_ARGS_HELP ("trace") "\n\ | |
16259 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16260 | set_cmd_completer (c, location_completer); | |
16261 | ||
16262 | add_com_alias ("tp", "trace", class_alias, 0); | |
16263 | add_com_alias ("tr", "trace", class_alias, 1); | |
16264 | add_com_alias ("tra", "trace", class_alias, 1); | |
16265 | add_com_alias ("trac", "trace", class_alias, 1); | |
16266 | ||
7a697b8d SS |
16267 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16268 | Set a fast tracepoint at specified line or function.\n\ | |
16269 | \n" | |
16270 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16271 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16272 | set_cmd_completer (c, location_completer); | |
16273 | ||
0fb4aa4b PA |
16274 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16275 | Set a static tracepoint at specified line, function or marker.\n\ | |
16276 | \n\ | |
16277 | strace [LOCATION] [if CONDITION]\n\ | |
16278 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16279 | or -m MARKER_ID.\n\ | |
16280 | If a line number is specified, probe the marker at start of code\n\ | |
16281 | for that line. If a function is specified, probe the marker at start\n\ | |
16282 | of code for that function. If an address is specified, probe the marker\n\ | |
16283 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16284 | with that name. With no LOCATION, uses current execution address of\n\ | |
16285 | the selected stack frame.\n\ | |
16286 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16287 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16288 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16289 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16290 | \n\ | |
16291 | CONDITION is a boolean expression.\n\ | |
16292 | \n\ | |
d41c0fc8 PA |
16293 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16294 | conditions are different.\n\ | |
0fb4aa4b PA |
16295 | \n\ |
16296 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16297 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16298 | set_cmd_completer (c, location_completer); | |
16299 | ||
1042e4c0 | 16300 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16301 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16302 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16303 | last tracepoint set.")); | |
16304 | ||
16305 | add_info_alias ("tp", "tracepoints", 1); | |
16306 | ||
16307 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16308 | Delete specified tracepoints.\n\ | |
16309 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16310 | No argument means delete all tracepoints."), | |
16311 | &deletelist); | |
16312 | ||
16313 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16314 | Disable specified tracepoints.\n\ | |
16315 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16316 | No argument means disable all tracepoints."), | |
16317 | &disablelist); | |
16318 | deprecate_cmd (c, "disable"); | |
16319 | ||
16320 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16321 | Enable specified tracepoints.\n\ | |
16322 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16323 | No argument means enable all tracepoints."), | |
16324 | &enablelist); | |
16325 | deprecate_cmd (c, "enable"); | |
16326 | ||
16327 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16328 | Set the passcount for a tracepoint.\n\ | |
16329 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16330 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16331 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16332 | ||
6149aea9 PA |
16333 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16334 | _("Save breakpoint definitions as a script."), | |
16335 | &save_cmdlist, "save ", | |
16336 | 0/*allow-unknown*/, &cmdlist); | |
16337 | ||
16338 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16339 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16340 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16341 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16342 | session to restore them."), | |
16343 | &save_cmdlist); | |
16344 | set_cmd_completer (c, filename_completer); | |
16345 | ||
16346 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16347 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16348 | Use the 'source' command in another debug session to restore them."), |
16349 | &save_cmdlist); | |
1042e4c0 SS |
16350 | set_cmd_completer (c, filename_completer); |
16351 | ||
6149aea9 PA |
16352 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16353 | deprecate_cmd (c, "save tracepoints"); | |
16354 | ||
1bedd215 | 16355 | add_prefix_cmd ("breakpoint", class_maintenance, set_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16356 | Breakpoint specific settings\n\ |
16357 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16358 | pending breakpoint behavior"), |
fa8d40ab JJ |
16359 | &breakpoint_set_cmdlist, "set breakpoint ", |
16360 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16361 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16362 | Breakpoint specific settings\n\ |
16363 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16364 | pending breakpoint behavior"), |
fa8d40ab JJ |
16365 | &breakpoint_show_cmdlist, "show breakpoint ", |
16366 | 0/*allow-unknown*/, &showlist); | |
16367 | ||
7915a72c AC |
16368 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16369 | &pending_break_support, _("\ | |
16370 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16371 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16372 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16373 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16374 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16375 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16376 | NULL, |
920d2a44 | 16377 | show_pending_break_support, |
6e1d7d6c AC |
16378 | &breakpoint_set_cmdlist, |
16379 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16380 | |
16381 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16382 | |
16383 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16384 | &automatic_hardware_breakpoints, _("\ | |
16385 | Set automatic usage of hardware breakpoints."), _("\ | |
16386 | Show automatic usage of hardware breakpoints."), _("\ | |
16387 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16388 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16389 | a warning will be emitted for such breakpoints."), | |
16390 | NULL, | |
16391 | show_automatic_hardware_breakpoints, | |
16392 | &breakpoint_set_cmdlist, | |
16393 | &breakpoint_show_cmdlist); | |
74960c60 | 16394 | |
72d0e2c5 YQ |
16395 | add_setshow_auto_boolean_cmd ("always-inserted", class_support, |
16396 | &always_inserted_mode, _("\ | |
74960c60 VP |
16397 | Set mode for inserting breakpoints."), _("\ |
16398 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
16399 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
16400 | resumed, and removed when execution stops. When this mode is on,\n\ | |
16401 | breakpoints are inserted immediately and removed only when the user\n\ | |
16402 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
16403 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
16404 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
16405 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
16406 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
72d0e2c5 YQ |
16407 | NULL, |
16408 | &show_always_inserted_mode, | |
16409 | &breakpoint_set_cmdlist, | |
16410 | &breakpoint_show_cmdlist); | |
f1310107 | 16411 | |
b775012e LM |
16412 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16413 | condition_evaluation_enums, | |
16414 | &condition_evaluation_mode_1, _("\ | |
16415 | Set mode of breakpoint condition evaluation."), _("\ | |
16416 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16417 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16418 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16419 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16420 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16421 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16422 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16423 | be set to \"gdb\""), | |
16424 | &set_condition_evaluation_mode, | |
16425 | &show_condition_evaluation_mode, | |
16426 | &breakpoint_set_cmdlist, | |
16427 | &breakpoint_show_cmdlist); | |
16428 | ||
f1310107 TJB |
16429 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16430 | Set a breakpoint for an address range.\n\ | |
16431 | break-range START-LOCATION, END-LOCATION\n\ | |
16432 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16433 | LINENUM, for that line in the current file,\n\ | |
16434 | FILE:LINENUM, for that line in that file,\n\ | |
16435 | +OFFSET, for that number of lines after the current line\n\ | |
16436 | or the start of the range\n\ | |
16437 | FUNCTION, for the first line in that function,\n\ | |
16438 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16439 | *ADDRESS, for the instruction at that address.\n\ | |
16440 | \n\ | |
16441 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16442 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16443 | range (including START-LOCATION and END-LOCATION).")); | |
16444 | ||
e7e0cddf SS |
16445 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16446 | Set a dynamic printf at specified line or function.\n\ | |
16447 | dprintf location,format string,arg1,arg2,...\n\ | |
16448 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16449 | If a line number is specified, break at start of code for that line.\n\ | |
16450 | If a function is specified, break at start of code for that function.\n\ | |
16451 | ")); | |
16452 | set_cmd_completer (c, location_completer); | |
16453 | ||
16454 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16455 | dprintf_style_enums, &dprintf_style, _("\ | |
16456 | Set the style of usage for dynamic printf."), _("\ | |
16457 | Show the style of usage for dynamic printf."), _("\ | |
16458 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16459 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16460 | console, as with the \"printf\" command.\n\ | |
16461 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16462 | program; by default printf(), but you can choose a different function or\n\ | |
16463 | output stream by setting dprintf-function and dprintf-channel."), | |
16464 | update_dprintf_commands, NULL, | |
16465 | &setlist, &showlist); | |
16466 | ||
16467 | dprintf_function = xstrdup ("printf"); | |
16468 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16469 | &dprintf_function, _("\ | |
16470 | Set the function to use for dynamic printf"), _("\ | |
16471 | Show the function to use for dynamic printf"), NULL, | |
16472 | update_dprintf_commands, NULL, | |
16473 | &setlist, &showlist); | |
16474 | ||
16475 | dprintf_channel = xstrdup (""); | |
16476 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16477 | &dprintf_channel, _("\ | |
16478 | Set the channel to use for dynamic printf"), _("\ | |
16479 | Show the channel to use for dynamic printf"), NULL, | |
16480 | update_dprintf_commands, NULL, | |
16481 | &setlist, &showlist); | |
16482 | ||
d3ce09f5 SS |
16483 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16484 | &disconnected_dprintf, _("\ | |
16485 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16486 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16487 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16488 | even if GDB disconnects or detaches from the target."), | |
16489 | NULL, | |
16490 | NULL, | |
16491 | &setlist, &showlist); | |
16492 | ||
16493 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16494 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16495 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16496 | ||
765dc015 | 16497 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16498 | |
16499 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 16500 | } |