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c906108c | 1 | /* Everything about breakpoints, for GDB. |
8926118c | 2 | |
28e7fd62 | 3 | Copyright (C) 1986-2013 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 | |
e7e8980f YQ |
85 | /* Enums for exception-handling support. */ |
86 | enum exception_event_kind | |
87 | { | |
88 | EX_EVENT_THROW, | |
591f19e8 | 89 | EX_EVENT_RETHROW, |
e7e8980f YQ |
90 | EX_EVENT_CATCH |
91 | }; | |
92 | ||
4a64f543 | 93 | /* Prototypes for local functions. */ |
c906108c | 94 | |
a14ed312 | 95 | static void enable_delete_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | static void enable_once_command (char *, int); |
c906108c | 98 | |
816338b5 SS |
99 | static void enable_count_command (char *, int); |
100 | ||
a14ed312 | 101 | static void disable_command (char *, int); |
c906108c | 102 | |
a14ed312 | 103 | static void enable_command (char *, int); |
c906108c | 104 | |
95a42b64 TT |
105 | static void map_breakpoint_numbers (char *, void (*) (struct breakpoint *, |
106 | void *), | |
107 | void *); | |
c906108c | 108 | |
a14ed312 | 109 | static void ignore_command (char *, int); |
c906108c | 110 | |
4efb68b1 | 111 | static int breakpoint_re_set_one (void *); |
c906108c | 112 | |
348d480f PA |
113 | static void breakpoint_re_set_default (struct breakpoint *); |
114 | ||
983af33b SDJ |
115 | static void create_sals_from_address_default (char **, |
116 | struct linespec_result *, | |
117 | enum bptype, char *, | |
118 | char **); | |
119 | ||
120 | static void create_breakpoints_sal_default (struct gdbarch *, | |
121 | struct linespec_result *, | |
122 | struct linespec_sals *, | |
e7e0cddf | 123 | char *, char *, enum bptype, |
983af33b SDJ |
124 | enum bpdisp, int, int, |
125 | int, | |
126 | const struct breakpoint_ops *, | |
44f238bb | 127 | int, int, int, unsigned); |
983af33b SDJ |
128 | |
129 | static void decode_linespec_default (struct breakpoint *, char **, | |
130 | struct symtabs_and_lines *); | |
131 | ||
a14ed312 | 132 | static void clear_command (char *, int); |
c906108c | 133 | |
a14ed312 | 134 | static void catch_command (char *, int); |
c906108c | 135 | |
a9634178 | 136 | static int can_use_hardware_watchpoint (struct value *); |
c906108c | 137 | |
98deb0da | 138 | static void break_command_1 (char *, int, int); |
c906108c | 139 | |
a14ed312 | 140 | static void mention (struct breakpoint *); |
c906108c | 141 | |
348d480f PA |
142 | static struct breakpoint *set_raw_breakpoint_without_location (struct gdbarch *, |
143 | enum bptype, | |
c0a91b2b | 144 | const struct breakpoint_ops *); |
3742cc8b YQ |
145 | static struct bp_location *add_location_to_breakpoint (struct breakpoint *, |
146 | const struct symtab_and_line *); | |
147 | ||
4a64f543 MS |
148 | /* This function is used in gdbtk sources and thus can not be made |
149 | static. */ | |
63c252f8 | 150 | struct breakpoint *set_raw_breakpoint (struct gdbarch *gdbarch, |
348d480f | 151 | struct symtab_and_line, |
c0a91b2b TT |
152 | enum bptype, |
153 | const struct breakpoint_ops *); | |
c906108c | 154 | |
06edf0c0 PA |
155 | static struct breakpoint * |
156 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
157 | enum bptype type, | |
c0a91b2b | 158 | const struct breakpoint_ops *ops); |
06edf0c0 | 159 | |
76897487 KB |
160 | static void breakpoint_adjustment_warning (CORE_ADDR, CORE_ADDR, int, int); |
161 | ||
a6d9a66e UW |
162 | static CORE_ADDR adjust_breakpoint_address (struct gdbarch *gdbarch, |
163 | CORE_ADDR bpaddr, | |
88f7da05 | 164 | enum bptype bptype); |
76897487 | 165 | |
6c95b8df PA |
166 | static void describe_other_breakpoints (struct gdbarch *, |
167 | struct program_space *, CORE_ADDR, | |
5af949e3 | 168 | struct obj_section *, int); |
c906108c | 169 | |
6c95b8df PA |
170 | static int breakpoint_address_match (struct address_space *aspace1, |
171 | CORE_ADDR addr1, | |
172 | struct address_space *aspace2, | |
173 | CORE_ADDR addr2); | |
174 | ||
85d721b8 PA |
175 | static int watchpoint_locations_match (struct bp_location *loc1, |
176 | struct bp_location *loc2); | |
177 | ||
f1310107 TJB |
178 | static int breakpoint_location_address_match (struct bp_location *bl, |
179 | struct address_space *aspace, | |
180 | CORE_ADDR addr); | |
181 | ||
a14ed312 | 182 | static void breakpoints_info (char *, int); |
c906108c | 183 | |
d77f58be SS |
184 | static void watchpoints_info (char *, int); |
185 | ||
e5a67952 MS |
186 | static int breakpoint_1 (char *, int, |
187 | int (*) (const struct breakpoint *)); | |
c906108c | 188 | |
4efb68b1 | 189 | static int breakpoint_cond_eval (void *); |
c906108c | 190 | |
4efb68b1 | 191 | static void cleanup_executing_breakpoints (void *); |
c906108c | 192 | |
a14ed312 | 193 | static void commands_command (char *, int); |
c906108c | 194 | |
a14ed312 | 195 | static void condition_command (char *, int); |
c906108c | 196 | |
c5aa993b JM |
197 | typedef enum |
198 | { | |
199 | mark_inserted, | |
200 | mark_uninserted | |
201 | } | |
202 | insertion_state_t; | |
c906108c | 203 | |
0bde7532 | 204 | static int remove_breakpoint (struct bp_location *, insertion_state_t); |
6c95b8df | 205 | static int remove_breakpoint_1 (struct bp_location *, insertion_state_t); |
c906108c | 206 | |
e514a9d6 | 207 | static enum print_stop_action print_bp_stop_message (bpstat bs); |
c906108c | 208 | |
4efb68b1 | 209 | static int watchpoint_check (void *); |
c906108c | 210 | |
a14ed312 | 211 | static void maintenance_info_breakpoints (char *, int); |
c906108c | 212 | |
a14ed312 | 213 | static int hw_breakpoint_used_count (void); |
c906108c | 214 | |
a1398e0c PA |
215 | static int hw_watchpoint_use_count (struct breakpoint *); |
216 | ||
217 | static int hw_watchpoint_used_count_others (struct breakpoint *except, | |
218 | enum bptype type, | |
219 | int *other_type_used); | |
c906108c | 220 | |
a14ed312 | 221 | static void hbreak_command (char *, int); |
c906108c | 222 | |
a14ed312 | 223 | static void thbreak_command (char *, int); |
c906108c | 224 | |
816338b5 SS |
225 | static void enable_breakpoint_disp (struct breakpoint *, enum bpdisp, |
226 | int count); | |
c906108c | 227 | |
a14ed312 | 228 | static void stop_command (char *arg, int from_tty); |
7a292a7a | 229 | |
a14ed312 | 230 | static void stopin_command (char *arg, int from_tty); |
7a292a7a | 231 | |
a14ed312 | 232 | static void stopat_command (char *arg, int from_tty); |
7a292a7a | 233 | |
a14ed312 | 234 | static void tcatch_command (char *arg, int from_tty); |
7a292a7a | 235 | |
d03285ec UW |
236 | static void detach_single_step_breakpoints (void); |
237 | ||
6c95b8df PA |
238 | static int single_step_breakpoint_inserted_here_p (struct address_space *, |
239 | CORE_ADDR pc); | |
1aafd4da | 240 | |
fe3f5fa8 | 241 | static void free_bp_location (struct bp_location *loc); |
f431efe5 PA |
242 | static void incref_bp_location (struct bp_location *loc); |
243 | static void decref_bp_location (struct bp_location **loc); | |
fe3f5fa8 | 244 | |
39d61571 | 245 | static struct bp_location *allocate_bp_location (struct breakpoint *bpt); |
a5606eee | 246 | |
b60e7edf | 247 | static void update_global_location_list (int); |
a5606eee | 248 | |
b60e7edf | 249 | static void update_global_location_list_nothrow (int); |
74960c60 | 250 | |
d77f58be | 251 | static int is_hardware_watchpoint (const struct breakpoint *bpt); |
74960c60 VP |
252 | |
253 | static void insert_breakpoint_locations (void); | |
a5606eee | 254 | |
a96d9b2e SDJ |
255 | static int syscall_catchpoint_p (struct breakpoint *b); |
256 | ||
1042e4c0 SS |
257 | static void tracepoints_info (char *, int); |
258 | ||
259 | static void delete_trace_command (char *, int); | |
260 | ||
261 | static void enable_trace_command (char *, int); | |
262 | ||
263 | static void disable_trace_command (char *, int); | |
264 | ||
265 | static void trace_pass_command (char *, int); | |
266 | ||
558a9d82 YQ |
267 | static void set_tracepoint_count (int num); |
268 | ||
9c06b0b4 TJB |
269 | static int is_masked_watchpoint (const struct breakpoint *b); |
270 | ||
b775012e LM |
271 | static struct bp_location **get_first_locp_gte_addr (CORE_ADDR address); |
272 | ||
983af33b SDJ |
273 | /* Return 1 if B refers to a static tracepoint set by marker ("-m"), zero |
274 | otherwise. */ | |
275 | ||
276 | static int strace_marker_p (struct breakpoint *b); | |
0fb4aa4b | 277 | |
2060206e PA |
278 | /* The abstract base class all breakpoint_ops structures inherit |
279 | from. */ | |
ab04a2af | 280 | struct breakpoint_ops base_breakpoint_ops; |
2060206e PA |
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 | 303 | /* Dynamic printf class type. */ |
c5867ab6 | 304 | struct breakpoint_ops dprintf_breakpoint_ops; |
e7e0cddf | 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 | { | |
bbc13ae3 | 949 | const 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 | ||
8d3788bd | 984 | observer_notify_breakpoint_modified (b); |
adc36818 PM |
985 | } |
986 | ||
d55637df TT |
987 | /* Completion for the "condition" command. */ |
988 | ||
989 | static VEC (char_ptr) * | |
6f937416 PA |
990 | condition_completer (struct cmd_list_element *cmd, |
991 | const char *text, const char *word) | |
d55637df | 992 | { |
6f937416 | 993 | const char *space; |
d55637df | 994 | |
6f937416 PA |
995 | text = skip_spaces_const (text); |
996 | space = skip_to_space_const (text); | |
d55637df TT |
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) | |
58ce7251 SDJ |
1015 | { |
1016 | char number[50]; | |
1017 | ||
1018 | xsnprintf (number, sizeof (number), "%d", b->number); | |
1019 | ||
1020 | if (strncmp (number, text, len) == 0) | |
1021 | VEC_safe_push (char_ptr, result, xstrdup (number)); | |
1022 | } | |
d55637df TT |
1023 | |
1024 | return result; | |
1025 | } | |
1026 | ||
1027 | /* We're completing the expression part. */ | |
6f937416 | 1028 | text = skip_spaces_const (space); |
d55637df TT |
1029 | return expression_completer (cmd, text, word); |
1030 | } | |
1031 | ||
c906108c SS |
1032 | /* condition N EXP -- set break condition of breakpoint N to EXP. */ |
1033 | ||
1034 | static void | |
fba45db2 | 1035 | condition_command (char *arg, int from_tty) |
c906108c | 1036 | { |
52f0bd74 | 1037 | struct breakpoint *b; |
c906108c | 1038 | char *p; |
52f0bd74 | 1039 | int bnum; |
c906108c SS |
1040 | |
1041 | if (arg == 0) | |
e2e0b3e5 | 1042 | error_no_arg (_("breakpoint number")); |
c906108c SS |
1043 | |
1044 | p = arg; | |
1045 | bnum = get_number (&p); | |
5c44784c | 1046 | if (bnum == 0) |
8a3fe4f8 | 1047 | error (_("Bad breakpoint argument: '%s'"), arg); |
c906108c SS |
1048 | |
1049 | ALL_BREAKPOINTS (b) | |
1050 | if (b->number == bnum) | |
2f069f6f | 1051 | { |
7371cf6d PM |
1052 | /* Check if this breakpoint has a Python object assigned to |
1053 | it, and if it has a definition of the "stop" | |
1054 | method. This method and conditions entered into GDB from | |
1055 | the CLI are mutually exclusive. */ | |
1056 | if (b->py_bp_object | |
1057 | && gdbpy_breakpoint_has_py_cond (b->py_bp_object)) | |
1058 | error (_("Cannot set a condition where a Python 'stop' " | |
1059 | "method has been defined in the breakpoint.")); | |
2566ad2d | 1060 | set_breakpoint_condition (b, p, from_tty); |
b775012e LM |
1061 | |
1062 | if (is_breakpoint (b)) | |
1063 | update_global_location_list (1); | |
1064 | ||
2f069f6f JB |
1065 | return; |
1066 | } | |
c906108c | 1067 | |
8a3fe4f8 | 1068 | error (_("No breakpoint number %d."), bnum); |
c906108c SS |
1069 | } |
1070 | ||
a7bdde9e VP |
1071 | /* Check that COMMAND do not contain commands that are suitable |
1072 | only for tracepoints and not suitable for ordinary breakpoints. | |
4a64f543 MS |
1073 | Throw if any such commands is found. */ |
1074 | ||
a7bdde9e VP |
1075 | static void |
1076 | check_no_tracepoint_commands (struct command_line *commands) | |
1077 | { | |
1078 | struct command_line *c; | |
cc59ec59 | 1079 | |
a7bdde9e VP |
1080 | for (c = commands; c; c = c->next) |
1081 | { | |
1082 | int i; | |
1083 | ||
1084 | if (c->control_type == while_stepping_control) | |
3e43a32a MS |
1085 | error (_("The 'while-stepping' command can " |
1086 | "only be used for tracepoints")); | |
a7bdde9e VP |
1087 | |
1088 | for (i = 0; i < c->body_count; ++i) | |
1089 | check_no_tracepoint_commands ((c->body_list)[i]); | |
1090 | ||
1091 | /* Not that command parsing removes leading whitespace and comment | |
4a64f543 | 1092 | lines and also empty lines. So, we only need to check for |
a7bdde9e VP |
1093 | command directly. */ |
1094 | if (strstr (c->line, "collect ") == c->line) | |
1095 | error (_("The 'collect' command can only be used for tracepoints")); | |
1096 | ||
51661e93 VP |
1097 | if (strstr (c->line, "teval ") == c->line) |
1098 | error (_("The 'teval' command can only be used for tracepoints")); | |
a7bdde9e VP |
1099 | } |
1100 | } | |
1101 | ||
d77f58be SS |
1102 | /* Encapsulate tests for different types of tracepoints. */ |
1103 | ||
d9b3f62e PA |
1104 | static int |
1105 | is_tracepoint_type (enum bptype type) | |
1106 | { | |
1107 | return (type == bp_tracepoint | |
1108 | || type == bp_fast_tracepoint | |
1109 | || type == bp_static_tracepoint); | |
1110 | } | |
1111 | ||
a7bdde9e | 1112 | int |
d77f58be | 1113 | is_tracepoint (const struct breakpoint *b) |
a7bdde9e | 1114 | { |
d9b3f62e | 1115 | return is_tracepoint_type (b->type); |
a7bdde9e | 1116 | } |
d9b3f62e | 1117 | |
e5dd4106 | 1118 | /* A helper function that validates that COMMANDS are valid for a |
95a42b64 TT |
1119 | breakpoint. This function will throw an exception if a problem is |
1120 | found. */ | |
48cb2d85 | 1121 | |
95a42b64 TT |
1122 | static void |
1123 | validate_commands_for_breakpoint (struct breakpoint *b, | |
1124 | struct command_line *commands) | |
48cb2d85 | 1125 | { |
d77f58be | 1126 | if (is_tracepoint (b)) |
a7bdde9e | 1127 | { |
c9a6ce02 | 1128 | struct tracepoint *t = (struct tracepoint *) b; |
a7bdde9e VP |
1129 | struct command_line *c; |
1130 | struct command_line *while_stepping = 0; | |
c9a6ce02 PA |
1131 | |
1132 | /* Reset the while-stepping step count. The previous commands | |
1133 | might have included a while-stepping action, while the new | |
1134 | ones might not. */ | |
1135 | t->step_count = 0; | |
1136 | ||
1137 | /* We need to verify that each top-level element of commands is | |
1138 | valid for tracepoints, that there's at most one | |
1139 | while-stepping element, and that the while-stepping's body | |
1140 | has valid tracing commands excluding nested while-stepping. | |
1141 | We also need to validate the tracepoint action line in the | |
1142 | context of the tracepoint --- validate_actionline actually | |
1143 | has side effects, like setting the tracepoint's | |
1144 | while-stepping STEP_COUNT, in addition to checking if the | |
1145 | collect/teval actions parse and make sense in the | |
1146 | tracepoint's context. */ | |
a7bdde9e VP |
1147 | for (c = commands; c; c = c->next) |
1148 | { | |
a7bdde9e VP |
1149 | if (c->control_type == while_stepping_control) |
1150 | { | |
1151 | if (b->type == bp_fast_tracepoint) | |
3e43a32a MS |
1152 | error (_("The 'while-stepping' command " |
1153 | "cannot be used for fast tracepoint")); | |
0fb4aa4b | 1154 | else if (b->type == bp_static_tracepoint) |
3e43a32a MS |
1155 | error (_("The 'while-stepping' command " |
1156 | "cannot be used for static tracepoint")); | |
a7bdde9e VP |
1157 | |
1158 | if (while_stepping) | |
3e43a32a MS |
1159 | error (_("The 'while-stepping' command " |
1160 | "can be used only once")); | |
a7bdde9e VP |
1161 | else |
1162 | while_stepping = c; | |
1163 | } | |
c9a6ce02 PA |
1164 | |
1165 | validate_actionline (c->line, b); | |
a7bdde9e VP |
1166 | } |
1167 | if (while_stepping) | |
1168 | { | |
1169 | struct command_line *c2; | |
1170 | ||
1171 | gdb_assert (while_stepping->body_count == 1); | |
1172 | c2 = while_stepping->body_list[0]; | |
1173 | for (; c2; c2 = c2->next) | |
1174 | { | |
a7bdde9e VP |
1175 | if (c2->control_type == while_stepping_control) |
1176 | error (_("The 'while-stepping' command cannot be nested")); | |
1177 | } | |
1178 | } | |
1179 | } | |
1180 | else | |
1181 | { | |
1182 | check_no_tracepoint_commands (commands); | |
1183 | } | |
95a42b64 TT |
1184 | } |
1185 | ||
0fb4aa4b PA |
1186 | /* Return a vector of all the static tracepoints set at ADDR. The |
1187 | caller is responsible for releasing the vector. */ | |
1188 | ||
1189 | VEC(breakpoint_p) * | |
1190 | static_tracepoints_here (CORE_ADDR addr) | |
1191 | { | |
1192 | struct breakpoint *b; | |
1193 | VEC(breakpoint_p) *found = 0; | |
1194 | struct bp_location *loc; | |
1195 | ||
1196 | ALL_BREAKPOINTS (b) | |
1197 | if (b->type == bp_static_tracepoint) | |
1198 | { | |
1199 | for (loc = b->loc; loc; loc = loc->next) | |
1200 | if (loc->address == addr) | |
1201 | VEC_safe_push(breakpoint_p, found, b); | |
1202 | } | |
1203 | ||
1204 | return found; | |
1205 | } | |
1206 | ||
95a42b64 | 1207 | /* Set the command list of B to COMMANDS. If breakpoint is tracepoint, |
4a64f543 | 1208 | validate that only allowed commands are included. */ |
95a42b64 TT |
1209 | |
1210 | void | |
4a64f543 MS |
1211 | breakpoint_set_commands (struct breakpoint *b, |
1212 | struct command_line *commands) | |
95a42b64 TT |
1213 | { |
1214 | validate_commands_for_breakpoint (b, commands); | |
a7bdde9e | 1215 | |
9add0f1b TT |
1216 | decref_counted_command_line (&b->commands); |
1217 | b->commands = alloc_counted_command_line (commands); | |
8d3788bd | 1218 | observer_notify_breakpoint_modified (b); |
48cb2d85 VP |
1219 | } |
1220 | ||
45a43567 TT |
1221 | /* Set the internal `silent' flag on the breakpoint. Note that this |
1222 | is not the same as the "silent" that may appear in the breakpoint's | |
1223 | commands. */ | |
1224 | ||
1225 | void | |
1226 | breakpoint_set_silent (struct breakpoint *b, int silent) | |
1227 | { | |
1228 | int old_silent = b->silent; | |
1229 | ||
1230 | b->silent = silent; | |
1231 | if (old_silent != silent) | |
8d3788bd | 1232 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1233 | } |
1234 | ||
1235 | /* Set the thread for this breakpoint. If THREAD is -1, make the | |
1236 | breakpoint work for any thread. */ | |
1237 | ||
1238 | void | |
1239 | breakpoint_set_thread (struct breakpoint *b, int thread) | |
1240 | { | |
1241 | int old_thread = b->thread; | |
1242 | ||
1243 | b->thread = thread; | |
1244 | if (old_thread != thread) | |
8d3788bd | 1245 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1246 | } |
1247 | ||
1248 | /* Set the task for this breakpoint. If TASK is 0, make the | |
1249 | breakpoint work for any task. */ | |
1250 | ||
1251 | void | |
1252 | breakpoint_set_task (struct breakpoint *b, int task) | |
1253 | { | |
1254 | int old_task = b->task; | |
1255 | ||
1256 | b->task = task; | |
1257 | if (old_task != task) | |
8d3788bd | 1258 | observer_notify_breakpoint_modified (b); |
45a43567 TT |
1259 | } |
1260 | ||
95a42b64 TT |
1261 | void |
1262 | check_tracepoint_command (char *line, void *closure) | |
a7bdde9e VP |
1263 | { |
1264 | struct breakpoint *b = closure; | |
cc59ec59 | 1265 | |
6f937416 | 1266 | validate_actionline (line, b); |
a7bdde9e VP |
1267 | } |
1268 | ||
95a42b64 TT |
1269 | /* A structure used to pass information through |
1270 | map_breakpoint_numbers. */ | |
1271 | ||
1272 | struct commands_info | |
1273 | { | |
1274 | /* True if the command was typed at a tty. */ | |
1275 | int from_tty; | |
86b17b60 PA |
1276 | |
1277 | /* The breakpoint range spec. */ | |
1278 | char *arg; | |
1279 | ||
95a42b64 TT |
1280 | /* Non-NULL if the body of the commands are being read from this |
1281 | already-parsed command. */ | |
1282 | struct command_line *control; | |
86b17b60 | 1283 | |
95a42b64 TT |
1284 | /* The command lines read from the user, or NULL if they have not |
1285 | yet been read. */ | |
1286 | struct counted_command_line *cmd; | |
1287 | }; | |
1288 | ||
1289 | /* A callback for map_breakpoint_numbers that sets the commands for | |
1290 | commands_command. */ | |
1291 | ||
c906108c | 1292 | static void |
95a42b64 | 1293 | do_map_commands_command (struct breakpoint *b, void *data) |
c906108c | 1294 | { |
95a42b64 | 1295 | struct commands_info *info = data; |
c906108c | 1296 | |
95a42b64 TT |
1297 | if (info->cmd == NULL) |
1298 | { | |
1299 | struct command_line *l; | |
5c44784c | 1300 | |
95a42b64 TT |
1301 | if (info->control != NULL) |
1302 | l = copy_command_lines (info->control->body_list[0]); | |
1303 | else | |
86b17b60 PA |
1304 | { |
1305 | struct cleanup *old_chain; | |
1306 | char *str; | |
c5aa993b | 1307 | |
3e43a32a MS |
1308 | str = xstrprintf (_("Type commands for breakpoint(s) " |
1309 | "%s, one per line."), | |
86b17b60 PA |
1310 | info->arg); |
1311 | ||
1312 | old_chain = make_cleanup (xfree, str); | |
1313 | ||
1314 | l = read_command_lines (str, | |
1315 | info->from_tty, 1, | |
d77f58be | 1316 | (is_tracepoint (b) |
86b17b60 PA |
1317 | ? check_tracepoint_command : 0), |
1318 | b); | |
1319 | ||
1320 | do_cleanups (old_chain); | |
1321 | } | |
a7bdde9e | 1322 | |
95a42b64 TT |
1323 | info->cmd = alloc_counted_command_line (l); |
1324 | } | |
1325 | ||
1326 | /* If a breakpoint was on the list more than once, we don't need to | |
1327 | do anything. */ | |
1328 | if (b->commands != info->cmd) | |
1329 | { | |
1330 | validate_commands_for_breakpoint (b, info->cmd->commands); | |
1331 | incref_counted_command_line (info->cmd); | |
1332 | decref_counted_command_line (&b->commands); | |
1333 | b->commands = info->cmd; | |
8d3788bd | 1334 | observer_notify_breakpoint_modified (b); |
c5aa993b | 1335 | } |
95a42b64 TT |
1336 | } |
1337 | ||
1338 | static void | |
4a64f543 MS |
1339 | commands_command_1 (char *arg, int from_tty, |
1340 | struct command_line *control) | |
95a42b64 TT |
1341 | { |
1342 | struct cleanup *cleanups; | |
1343 | struct commands_info info; | |
1344 | ||
1345 | info.from_tty = from_tty; | |
1346 | info.control = control; | |
1347 | info.cmd = NULL; | |
1348 | /* If we read command lines from the user, then `info' will hold an | |
1349 | extra reference to the commands that we must clean up. */ | |
1350 | cleanups = make_cleanup_decref_counted_command_line (&info.cmd); | |
1351 | ||
1352 | if (arg == NULL || !*arg) | |
1353 | { | |
86b17b60 | 1354 | if (breakpoint_count - prev_breakpoint_count > 1) |
4a64f543 MS |
1355 | arg = xstrprintf ("%d-%d", prev_breakpoint_count + 1, |
1356 | breakpoint_count); | |
95a42b64 TT |
1357 | else if (breakpoint_count > 0) |
1358 | arg = xstrprintf ("%d", breakpoint_count); | |
86b17b60 PA |
1359 | else |
1360 | { | |
1361 | /* So that we don't try to free the incoming non-NULL | |
1362 | argument in the cleanup below. Mapping breakpoint | |
1363 | numbers will fail in this case. */ | |
1364 | arg = NULL; | |
1365 | } | |
95a42b64 | 1366 | } |
9766ced4 SS |
1367 | else |
1368 | /* The command loop has some static state, so we need to preserve | |
1369 | our argument. */ | |
1370 | arg = xstrdup (arg); | |
86b17b60 PA |
1371 | |
1372 | if (arg != NULL) | |
1373 | make_cleanup (xfree, arg); | |
1374 | ||
1375 | info.arg = arg; | |
95a42b64 TT |
1376 | |
1377 | map_breakpoint_numbers (arg, do_map_commands_command, &info); | |
1378 | ||
1379 | if (info.cmd == NULL) | |
1380 | error (_("No breakpoints specified.")); | |
1381 | ||
1382 | do_cleanups (cleanups); | |
1383 | } | |
1384 | ||
1385 | static void | |
1386 | commands_command (char *arg, int from_tty) | |
1387 | { | |
1388 | commands_command_1 (arg, from_tty, NULL); | |
c906108c | 1389 | } |
40c03ae8 EZ |
1390 | |
1391 | /* Like commands_command, but instead of reading the commands from | |
1392 | input stream, takes them from an already parsed command structure. | |
1393 | ||
1394 | This is used by cli-script.c to DTRT with breakpoint commands | |
1395 | that are part of if and while bodies. */ | |
1396 | enum command_control_type | |
1397 | commands_from_control_command (char *arg, struct command_line *cmd) | |
1398 | { | |
95a42b64 TT |
1399 | commands_command_1 (arg, 0, cmd); |
1400 | return simple_control; | |
40c03ae8 | 1401 | } |
876fa593 JK |
1402 | |
1403 | /* Return non-zero if BL->TARGET_INFO contains valid information. */ | |
1404 | ||
1405 | static int | |
1406 | bp_location_has_shadow (struct bp_location *bl) | |
1407 | { | |
1408 | if (bl->loc_type != bp_loc_software_breakpoint) | |
1409 | return 0; | |
1410 | if (!bl->inserted) | |
1411 | return 0; | |
1412 | if (bl->target_info.shadow_len == 0) | |
e5dd4106 | 1413 | /* BL isn't valid, or doesn't shadow memory. */ |
876fa593 JK |
1414 | return 0; |
1415 | return 1; | |
1416 | } | |
1417 | ||
8defab1a | 1418 | /* Update BUF, which is LEN bytes read from the target address MEMADDR, |
876fa593 JK |
1419 | by replacing any memory breakpoints with their shadowed contents. |
1420 | ||
35c63cd8 JB |
1421 | If READBUF is not NULL, this buffer must not overlap with any of |
1422 | the breakpoint location's shadow_contents buffers. Otherwise, | |
1423 | a failed assertion internal error will be raised. | |
1424 | ||
876fa593 | 1425 | The range of shadowed area by each bp_location is: |
35df4500 TJB |
1426 | bl->address - bp_location_placed_address_before_address_max |
1427 | up to bl->address + bp_location_shadow_len_after_address_max | |
876fa593 JK |
1428 | The range we were requested to resolve shadows for is: |
1429 | memaddr ... memaddr + len | |
1430 | Thus the safe cutoff boundaries for performance optimization are | |
35df4500 TJB |
1431 | memaddr + len <= (bl->address |
1432 | - bp_location_placed_address_before_address_max) | |
876fa593 | 1433 | and: |
35df4500 | 1434 | bl->address + bp_location_shadow_len_after_address_max <= memaddr */ |
c906108c | 1435 | |
8defab1a | 1436 | void |
f0ba3972 PA |
1437 | breakpoint_xfer_memory (gdb_byte *readbuf, gdb_byte *writebuf, |
1438 | const gdb_byte *writebuf_org, | |
1439 | ULONGEST memaddr, LONGEST len) | |
c906108c | 1440 | { |
4a64f543 MS |
1441 | /* Left boundary, right boundary and median element of our binary |
1442 | search. */ | |
876fa593 JK |
1443 | unsigned bc_l, bc_r, bc; |
1444 | ||
4a64f543 MS |
1445 | /* Find BC_L which is a leftmost element which may affect BUF |
1446 | content. It is safe to report lower value but a failure to | |
1447 | report higher one. */ | |
876fa593 JK |
1448 | |
1449 | bc_l = 0; | |
1450 | bc_r = bp_location_count; | |
1451 | while (bc_l + 1 < bc_r) | |
1452 | { | |
35df4500 | 1453 | struct bp_location *bl; |
876fa593 JK |
1454 | |
1455 | bc = (bc_l + bc_r) / 2; | |
35df4500 | 1456 | bl = bp_location[bc]; |
876fa593 | 1457 | |
4a64f543 MS |
1458 | /* Check first BL->ADDRESS will not overflow due to the added |
1459 | constant. Then advance the left boundary only if we are sure | |
1460 | the BC element can in no way affect the BUF content (MEMADDR | |
1461 | to MEMADDR + LEN range). | |
876fa593 | 1462 | |
4a64f543 MS |
1463 | Use the BP_LOCATION_SHADOW_LEN_AFTER_ADDRESS_MAX safety |
1464 | offset so that we cannot miss a breakpoint with its shadow | |
1465 | range tail still reaching MEMADDR. */ | |
c5aa993b | 1466 | |
35df4500 TJB |
1467 | if ((bl->address + bp_location_shadow_len_after_address_max |
1468 | >= bl->address) | |
1469 | && (bl->address + bp_location_shadow_len_after_address_max | |
1470 | <= memaddr)) | |
876fa593 JK |
1471 | bc_l = bc; |
1472 | else | |
1473 | bc_r = bc; | |
1474 | } | |
1475 | ||
128070bb PA |
1476 | /* Due to the binary search above, we need to make sure we pick the |
1477 | first location that's at BC_L's address. E.g., if there are | |
1478 | multiple locations at the same address, BC_L may end up pointing | |
1479 | at a duplicate location, and miss the "master"/"inserted" | |
1480 | location. Say, given locations L1, L2 and L3 at addresses A and | |
1481 | B: | |
1482 | ||
1483 | L1@A, L2@A, L3@B, ... | |
1484 | ||
1485 | BC_L could end up pointing at location L2, while the "master" | |
1486 | location could be L1. Since the `loc->inserted' flag is only set | |
1487 | on "master" locations, we'd forget to restore the shadow of L1 | |
1488 | and L2. */ | |
1489 | while (bc_l > 0 | |
1490 | && bp_location[bc_l]->address == bp_location[bc_l - 1]->address) | |
1491 | bc_l--; | |
1492 | ||
876fa593 JK |
1493 | /* Now do full processing of the found relevant range of elements. */ |
1494 | ||
1495 | for (bc = bc_l; bc < bp_location_count; bc++) | |
c5aa993b | 1496 | { |
35df4500 | 1497 | struct bp_location *bl = bp_location[bc]; |
876fa593 JK |
1498 | CORE_ADDR bp_addr = 0; |
1499 | int bp_size = 0; | |
1500 | int bptoffset = 0; | |
1501 | ||
35df4500 TJB |
1502 | /* bp_location array has BL->OWNER always non-NULL. */ |
1503 | if (bl->owner->type == bp_none) | |
8a3fe4f8 | 1504 | warning (_("reading through apparently deleted breakpoint #%d?"), |
35df4500 | 1505 | bl->owner->number); |
ffce0d52 | 1506 | |
e5dd4106 | 1507 | /* Performance optimization: any further element can no longer affect BUF |
876fa593 JK |
1508 | content. */ |
1509 | ||
35df4500 TJB |
1510 | if (bl->address >= bp_location_placed_address_before_address_max |
1511 | && memaddr + len <= (bl->address | |
1512 | - bp_location_placed_address_before_address_max)) | |
876fa593 JK |
1513 | break; |
1514 | ||
35df4500 | 1515 | if (!bp_location_has_shadow (bl)) |
c5aa993b | 1516 | continue; |
35df4500 | 1517 | if (!breakpoint_address_match (bl->target_info.placed_address_space, 0, |
6c95b8df PA |
1518 | current_program_space->aspace, 0)) |
1519 | continue; | |
1520 | ||
c5aa993b JM |
1521 | /* Addresses and length of the part of the breakpoint that |
1522 | we need to copy. */ | |
35df4500 TJB |
1523 | bp_addr = bl->target_info.placed_address; |
1524 | bp_size = bl->target_info.shadow_len; | |
8defab1a | 1525 | |
c5aa993b JM |
1526 | if (bp_addr + bp_size <= memaddr) |
1527 | /* The breakpoint is entirely before the chunk of memory we | |
1528 | are reading. */ | |
1529 | continue; | |
8defab1a | 1530 | |
c5aa993b JM |
1531 | if (bp_addr >= memaddr + len) |
1532 | /* The breakpoint is entirely after the chunk of memory we are | |
4a64f543 | 1533 | reading. */ |
c5aa993b | 1534 | continue; |
c5aa993b | 1535 | |
8defab1a DJ |
1536 | /* Offset within shadow_contents. */ |
1537 | if (bp_addr < memaddr) | |
1538 | { | |
1539 | /* Only copy the second part of the breakpoint. */ | |
1540 | bp_size -= memaddr - bp_addr; | |
1541 | bptoffset = memaddr - bp_addr; | |
1542 | bp_addr = memaddr; | |
1543 | } | |
c5aa993b | 1544 | |
8defab1a DJ |
1545 | if (bp_addr + bp_size > memaddr + len) |
1546 | { | |
1547 | /* Only copy the first part of the breakpoint. */ | |
1548 | bp_size -= (bp_addr + bp_size) - (memaddr + len); | |
1549 | } | |
c5aa993b | 1550 | |
f0ba3972 PA |
1551 | if (readbuf != NULL) |
1552 | { | |
35c63cd8 JB |
1553 | /* Verify that the readbuf buffer does not overlap with |
1554 | the shadow_contents buffer. */ | |
1555 | gdb_assert (bl->target_info.shadow_contents >= readbuf + len | |
1556 | || readbuf >= (bl->target_info.shadow_contents | |
1557 | + bl->target_info.shadow_len)); | |
1558 | ||
f0ba3972 PA |
1559 | /* Update the read buffer with this inserted breakpoint's |
1560 | shadow. */ | |
1561 | memcpy (readbuf + bp_addr - memaddr, | |
1562 | bl->target_info.shadow_contents + bptoffset, bp_size); | |
1563 | } | |
1564 | else | |
1565 | { | |
1566 | struct gdbarch *gdbarch = bl->gdbarch; | |
1567 | const unsigned char *bp; | |
1568 | CORE_ADDR placed_address = bl->target_info.placed_address; | |
20ced3e4 | 1569 | int placed_size = bl->target_info.placed_size; |
f0ba3972 PA |
1570 | |
1571 | /* Update the shadow with what we want to write to memory. */ | |
1572 | memcpy (bl->target_info.shadow_contents + bptoffset, | |
1573 | writebuf_org + bp_addr - memaddr, bp_size); | |
1574 | ||
1575 | /* Determine appropriate breakpoint contents and size for this | |
1576 | address. */ | |
1577 | bp = gdbarch_breakpoint_from_pc (gdbarch, &placed_address, &placed_size); | |
1578 | ||
1579 | /* Update the final write buffer with this inserted | |
1580 | breakpoint's INSN. */ | |
1581 | memcpy (writebuf + bp_addr - memaddr, bp + bptoffset, bp_size); | |
1582 | } | |
c5aa993b | 1583 | } |
c906108c | 1584 | } |
c906108c | 1585 | \f |
c5aa993b | 1586 | |
b775012e LM |
1587 | /* Return true if BPT is either a software breakpoint or a hardware |
1588 | breakpoint. */ | |
1589 | ||
1590 | int | |
1591 | is_breakpoint (const struct breakpoint *bpt) | |
1592 | { | |
1593 | return (bpt->type == bp_breakpoint | |
e7e0cddf SS |
1594 | || bpt->type == bp_hardware_breakpoint |
1595 | || bpt->type == bp_dprintf); | |
b775012e LM |
1596 | } |
1597 | ||
60e1c644 PA |
1598 | /* Return true if BPT is of any hardware watchpoint kind. */ |
1599 | ||
a5606eee | 1600 | static int |
d77f58be | 1601 | is_hardware_watchpoint (const struct breakpoint *bpt) |
a5606eee VP |
1602 | { |
1603 | return (bpt->type == bp_hardware_watchpoint | |
1604 | || bpt->type == bp_read_watchpoint | |
1605 | || bpt->type == bp_access_watchpoint); | |
1606 | } | |
7270d8f2 | 1607 | |
60e1c644 PA |
1608 | /* Return true if BPT is of any watchpoint kind, hardware or |
1609 | software. */ | |
1610 | ||
3a5c3e22 | 1611 | int |
d77f58be | 1612 | is_watchpoint (const struct breakpoint *bpt) |
60e1c644 PA |
1613 | { |
1614 | return (is_hardware_watchpoint (bpt) | |
1615 | || bpt->type == bp_watchpoint); | |
1616 | } | |
1617 | ||
3a5c3e22 PA |
1618 | /* Returns true if the current thread and its running state are safe |
1619 | to evaluate or update watchpoint B. Watchpoints on local | |
1620 | expressions need to be evaluated in the context of the thread that | |
1621 | was current when the watchpoint was created, and, that thread needs | |
1622 | to be stopped to be able to select the correct frame context. | |
1623 | Watchpoints on global expressions can be evaluated on any thread, | |
1624 | and in any state. It is presently left to the target allowing | |
1625 | memory accesses when threads are running. */ | |
f6bc2008 PA |
1626 | |
1627 | static int | |
3a5c3e22 | 1628 | watchpoint_in_thread_scope (struct watchpoint *b) |
f6bc2008 | 1629 | { |
d0d8b0c6 JK |
1630 | return (b->base.pspace == current_program_space |
1631 | && (ptid_equal (b->watchpoint_thread, null_ptid) | |
1632 | || (ptid_equal (inferior_ptid, b->watchpoint_thread) | |
1633 | && !is_executing (inferior_ptid)))); | |
f6bc2008 PA |
1634 | } |
1635 | ||
d0fb5eae JK |
1636 | /* Set watchpoint B to disp_del_at_next_stop, even including its possible |
1637 | associated bp_watchpoint_scope breakpoint. */ | |
1638 | ||
1639 | static void | |
3a5c3e22 | 1640 | watchpoint_del_at_next_stop (struct watchpoint *w) |
d0fb5eae | 1641 | { |
3a5c3e22 | 1642 | struct breakpoint *b = &w->base; |
d0fb5eae JK |
1643 | |
1644 | if (b->related_breakpoint != b) | |
1645 | { | |
1646 | gdb_assert (b->related_breakpoint->type == bp_watchpoint_scope); | |
1647 | gdb_assert (b->related_breakpoint->related_breakpoint == b); | |
1648 | b->related_breakpoint->disposition = disp_del_at_next_stop; | |
1649 | b->related_breakpoint->related_breakpoint = b->related_breakpoint; | |
1650 | b->related_breakpoint = b; | |
1651 | } | |
1652 | b->disposition = disp_del_at_next_stop; | |
1653 | } | |
1654 | ||
567e1b4e JB |
1655 | /* Assuming that B is a watchpoint: |
1656 | - Reparse watchpoint expression, if REPARSE is non-zero | |
a5606eee | 1657 | - Evaluate expression and store the result in B->val |
567e1b4e JB |
1658 | - Evaluate the condition if there is one, and store the result |
1659 | in b->loc->cond. | |
a5606eee VP |
1660 | - Update the list of values that must be watched in B->loc. |
1661 | ||
4a64f543 MS |
1662 | If the watchpoint disposition is disp_del_at_next_stop, then do |
1663 | nothing. If this is local watchpoint that is out of scope, delete | |
1664 | it. | |
1665 | ||
1666 | Even with `set breakpoint always-inserted on' the watchpoints are | |
1667 | removed + inserted on each stop here. Normal breakpoints must | |
1668 | never be removed because they might be missed by a running thread | |
1669 | when debugging in non-stop mode. On the other hand, hardware | |
1670 | watchpoints (is_hardware_watchpoint; processed here) are specific | |
1671 | to each LWP since they are stored in each LWP's hardware debug | |
1672 | registers. Therefore, such LWP must be stopped first in order to | |
1673 | be able to modify its hardware watchpoints. | |
1674 | ||
1675 | Hardware watchpoints must be reset exactly once after being | |
1676 | presented to the user. It cannot be done sooner, because it would | |
1677 | reset the data used to present the watchpoint hit to the user. And | |
1678 | it must not be done later because it could display the same single | |
1679 | watchpoint hit during multiple GDB stops. Note that the latter is | |
1680 | relevant only to the hardware watchpoint types bp_read_watchpoint | |
1681 | and bp_access_watchpoint. False hit by bp_hardware_watchpoint is | |
1682 | not user-visible - its hit is suppressed if the memory content has | |
1683 | not changed. | |
1684 | ||
1685 | The following constraints influence the location where we can reset | |
1686 | hardware watchpoints: | |
1687 | ||
1688 | * target_stopped_by_watchpoint and target_stopped_data_address are | |
1689 | called several times when GDB stops. | |
1690 | ||
1691 | [linux] | |
1692 | * Multiple hardware watchpoints can be hit at the same time, | |
1693 | causing GDB to stop. GDB only presents one hardware watchpoint | |
1694 | hit at a time as the reason for stopping, and all the other hits | |
1695 | are presented later, one after the other, each time the user | |
1696 | requests the execution to be resumed. Execution is not resumed | |
1697 | for the threads still having pending hit event stored in | |
1698 | LWP_INFO->STATUS. While the watchpoint is already removed from | |
1699 | the inferior on the first stop the thread hit event is kept being | |
1700 | reported from its cached value by linux_nat_stopped_data_address | |
1701 | until the real thread resume happens after the watchpoint gets | |
1702 | presented and thus its LWP_INFO->STATUS gets reset. | |
1703 | ||
1704 | Therefore the hardware watchpoint hit can get safely reset on the | |
1705 | watchpoint removal from inferior. */ | |
a79d3c27 | 1706 | |
b40ce68a | 1707 | static void |
3a5c3e22 | 1708 | update_watchpoint (struct watchpoint *b, int reparse) |
7270d8f2 | 1709 | { |
a5606eee | 1710 | int within_current_scope; |
a5606eee | 1711 | struct frame_id saved_frame_id; |
66076460 | 1712 | int frame_saved; |
a5606eee | 1713 | |
f6bc2008 PA |
1714 | /* If this is a local watchpoint, we only want to check if the |
1715 | watchpoint frame is in scope if the current thread is the thread | |
1716 | that was used to create the watchpoint. */ | |
1717 | if (!watchpoint_in_thread_scope (b)) | |
1718 | return; | |
1719 | ||
3a5c3e22 | 1720 | if (b->base.disposition == disp_del_at_next_stop) |
a5606eee VP |
1721 | return; |
1722 | ||
66076460 | 1723 | frame_saved = 0; |
a5606eee VP |
1724 | |
1725 | /* Determine if the watchpoint is within scope. */ | |
1726 | if (b->exp_valid_block == NULL) | |
1727 | within_current_scope = 1; | |
1728 | else | |
1729 | { | |
b5db5dfc UW |
1730 | struct frame_info *fi = get_current_frame (); |
1731 | struct gdbarch *frame_arch = get_frame_arch (fi); | |
1732 | CORE_ADDR frame_pc = get_frame_pc (fi); | |
1733 | ||
1734 | /* If we're in a function epilogue, unwinding may not work | |
1735 | properly, so do not attempt to recreate locations at this | |
1736 | point. See similar comments in watchpoint_check. */ | |
1737 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) | |
1738 | return; | |
66076460 DJ |
1739 | |
1740 | /* Save the current frame's ID so we can restore it after | |
1741 | evaluating the watchpoint expression on its own frame. */ | |
1742 | /* FIXME drow/2003-09-09: It would be nice if evaluate_expression | |
1743 | took a frame parameter, so that we didn't have to change the | |
1744 | selected frame. */ | |
1745 | frame_saved = 1; | |
1746 | saved_frame_id = get_frame_id (get_selected_frame (NULL)); | |
1747 | ||
a5606eee VP |
1748 | fi = frame_find_by_id (b->watchpoint_frame); |
1749 | within_current_scope = (fi != NULL); | |
1750 | if (within_current_scope) | |
1751 | select_frame (fi); | |
1752 | } | |
1753 | ||
b5db5dfc UW |
1754 | /* We don't free locations. They are stored in the bp_location array |
1755 | and update_global_location_list will eventually delete them and | |
1756 | remove breakpoints if needed. */ | |
3a5c3e22 | 1757 | b->base.loc = NULL; |
b5db5dfc | 1758 | |
a5606eee VP |
1759 | if (within_current_scope && reparse) |
1760 | { | |
bbc13ae3 | 1761 | const char *s; |
d63d0675 | 1762 | |
a5606eee VP |
1763 | if (b->exp) |
1764 | { | |
1765 | xfree (b->exp); | |
1766 | b->exp = NULL; | |
1767 | } | |
d63d0675 | 1768 | s = b->exp_string_reparse ? b->exp_string_reparse : b->exp_string; |
1bb9788d | 1769 | b->exp = parse_exp_1 (&s, 0, b->exp_valid_block, 0); |
a5606eee VP |
1770 | /* If the meaning of expression itself changed, the old value is |
1771 | no longer relevant. We don't want to report a watchpoint hit | |
1772 | to the user when the old value and the new value may actually | |
1773 | be completely different objects. */ | |
1774 | value_free (b->val); | |
fa4727a6 DJ |
1775 | b->val = NULL; |
1776 | b->val_valid = 0; | |
60e1c644 PA |
1777 | |
1778 | /* Note that unlike with breakpoints, the watchpoint's condition | |
1779 | expression is stored in the breakpoint object, not in the | |
1780 | locations (re)created below. */ | |
3a5c3e22 | 1781 | if (b->base.cond_string != NULL) |
60e1c644 PA |
1782 | { |
1783 | if (b->cond_exp != NULL) | |
1784 | { | |
1785 | xfree (b->cond_exp); | |
1786 | b->cond_exp = NULL; | |
1787 | } | |
1788 | ||
3a5c3e22 | 1789 | s = b->base.cond_string; |
1bb9788d | 1790 | b->cond_exp = parse_exp_1 (&s, 0, b->cond_exp_valid_block, 0); |
60e1c644 | 1791 | } |
a5606eee | 1792 | } |
a5606eee VP |
1793 | |
1794 | /* If we failed to parse the expression, for example because | |
1795 | it refers to a global variable in a not-yet-loaded shared library, | |
1796 | don't try to insert watchpoint. We don't automatically delete | |
1797 | such watchpoint, though, since failure to parse expression | |
1798 | is different from out-of-scope watchpoint. */ | |
2d134ed3 PA |
1799 | if ( !target_has_execution) |
1800 | { | |
1801 | /* Without execution, memory can't change. No use to try and | |
1802 | set watchpoint locations. The watchpoint will be reset when | |
1803 | the target gains execution, through breakpoint_re_set. */ | |
1804 | } | |
1805 | else if (within_current_scope && b->exp) | |
a5606eee | 1806 | { |
0cf6dd15 | 1807 | int pc = 0; |
fa4727a6 | 1808 | struct value *val_chain, *v, *result, *next; |
2d134ed3 | 1809 | struct program_space *frame_pspace; |
a5606eee | 1810 | |
0cf6dd15 | 1811 | fetch_subexp_value (b->exp, &pc, &v, &result, &val_chain); |
a5606eee | 1812 | |
a5606eee VP |
1813 | /* Avoid setting b->val if it's already set. The meaning of |
1814 | b->val is 'the last value' user saw, and we should update | |
1815 | it only if we reported that last value to user. As it | |
9c06b0b4 TJB |
1816 | happens, the code that reports it updates b->val directly. |
1817 | We don't keep track of the memory value for masked | |
1818 | watchpoints. */ | |
3a5c3e22 | 1819 | if (!b->val_valid && !is_masked_watchpoint (&b->base)) |
fa4727a6 DJ |
1820 | { |
1821 | b->val = v; | |
1822 | b->val_valid = 1; | |
1823 | } | |
a5606eee | 1824 | |
2d134ed3 PA |
1825 | frame_pspace = get_frame_program_space (get_selected_frame (NULL)); |
1826 | ||
a5606eee | 1827 | /* Look at each value on the value chain. */ |
9fa40276 | 1828 | for (v = val_chain; v; v = value_next (v)) |
a5606eee VP |
1829 | { |
1830 | /* If it's a memory location, and GDB actually needed | |
1831 | its contents to evaluate the expression, then we | |
fa4727a6 DJ |
1832 | must watch it. If the first value returned is |
1833 | still lazy, that means an error occurred reading it; | |
1834 | watch it anyway in case it becomes readable. */ | |
a5606eee | 1835 | if (VALUE_LVAL (v) == lval_memory |
fa4727a6 | 1836 | && (v == val_chain || ! value_lazy (v))) |
a5606eee VP |
1837 | { |
1838 | struct type *vtype = check_typedef (value_type (v)); | |
7270d8f2 | 1839 | |
a5606eee VP |
1840 | /* We only watch structs and arrays if user asked |
1841 | for it explicitly, never if they just happen to | |
1842 | appear in the middle of some value chain. */ | |
fa4727a6 | 1843 | if (v == result |
a5606eee VP |
1844 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT |
1845 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
1846 | { | |
1847 | CORE_ADDR addr; | |
744a8059 | 1848 | int type; |
a5606eee VP |
1849 | struct bp_location *loc, **tmp; |
1850 | ||
42ae5230 | 1851 | addr = value_address (v); |
a5606eee | 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 | 1865 | loc->address = addr; |
744a8059 | 1866 | loc->length = TYPE_LENGTH (value_type (v)); |
a5606eee VP |
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; | |
b775012e LM |
2048 | volatile struct gdb_exception ex; |
2049 | ||
2050 | if (!cond) | |
2051 | return NULL; | |
2052 | ||
2053 | /* We don't want to stop processing, so catch any errors | |
2054 | that may show up. */ | |
2055 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2056 | { | |
2057 | aexpr = gen_eval_for_expr (scope, cond); | |
2058 | } | |
2059 | ||
2060 | if (ex.reason < 0) | |
2061 | { | |
2062 | /* If we got here, it means the condition could not be parsed to a valid | |
2063 | bytecode expression and thus can't be evaluated on the target's side. | |
2064 | It's no use iterating through the conditions. */ | |
2065 | return NULL; | |
2066 | } | |
2067 | ||
2068 | /* We have a valid agent expression. */ | |
2069 | return aexpr; | |
2070 | } | |
2071 | ||
2072 | /* Based on location BL, create a list of breakpoint conditions to be | |
2073 | passed on to the target. If we have duplicated locations with different | |
2074 | conditions, we will add such conditions to the list. The idea is that the | |
2075 | target will evaluate the list of conditions and will only notify GDB when | |
2076 | one of them is true. */ | |
2077 | ||
2078 | static void | |
2079 | build_target_condition_list (struct bp_location *bl) | |
2080 | { | |
2081 | struct bp_location **locp = NULL, **loc2p; | |
2082 | int null_condition_or_parse_error = 0; | |
2083 | int modified = bl->needs_update; | |
2084 | struct bp_location *loc; | |
2085 | ||
2086 | /* This is only meaningful if the target is | |
2087 | evaluating conditions and if the user has | |
2088 | opted for condition evaluation on the target's | |
2089 | side. */ | |
2090 | if (gdb_evaluates_breakpoint_condition_p () | |
2091 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
2092 | return; | |
2093 | ||
2094 | /* Do a first pass to check for locations with no assigned | |
2095 | conditions or conditions that fail to parse to a valid agent expression | |
2096 | bytecode. If any of these happen, then it's no use to send conditions | |
2097 | to the target since this location will always trigger and generate a | |
2098 | response back to GDB. */ | |
2099 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2100 | { | |
2101 | loc = (*loc2p); | |
2102 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2103 | { | |
2104 | if (modified) | |
2105 | { | |
2106 | struct agent_expr *aexpr; | |
2107 | ||
2108 | /* Re-parse the conditions since something changed. In that | |
2109 | case we already freed the condition bytecodes (see | |
2110 | force_breakpoint_reinsertion). We just | |
2111 | need to parse the condition to bytecodes again. */ | |
2112 | aexpr = parse_cond_to_aexpr (bl->address, loc->cond); | |
2113 | loc->cond_bytecode = aexpr; | |
2114 | ||
2115 | /* Check if we managed to parse the conditional expression | |
2116 | correctly. If not, we will not send this condition | |
2117 | to the target. */ | |
2118 | if (aexpr) | |
2119 | continue; | |
2120 | } | |
2121 | ||
2122 | /* If we have a NULL bytecode expression, it means something | |
2123 | went wrong or we have a null condition expression. */ | |
2124 | if (!loc->cond_bytecode) | |
2125 | { | |
2126 | null_condition_or_parse_error = 1; | |
2127 | break; | |
2128 | } | |
2129 | } | |
2130 | } | |
2131 | ||
2132 | /* If any of these happened, it means we will have to evaluate the conditions | |
2133 | for the location's address on gdb's side. It is no use keeping bytecodes | |
2134 | for all the other duplicate locations, thus we free all of them here. | |
2135 | ||
2136 | This is so we have a finer control over which locations' conditions are | |
2137 | being evaluated by GDB or the remote stub. */ | |
2138 | if (null_condition_or_parse_error) | |
2139 | { | |
2140 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2141 | { | |
2142 | loc = (*loc2p); | |
2143 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2144 | { | |
2145 | /* Only go as far as the first NULL bytecode is | |
2146 | located. */ | |
2147 | if (!loc->cond_bytecode) | |
2148 | return; | |
2149 | ||
2150 | free_agent_expr (loc->cond_bytecode); | |
2151 | loc->cond_bytecode = NULL; | |
2152 | } | |
2153 | } | |
2154 | } | |
2155 | ||
2156 | /* No NULL conditions or failed bytecode generation. Build a condition list | |
2157 | for this location's address. */ | |
2158 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2159 | { | |
2160 | loc = (*loc2p); | |
2161 | if (loc->cond | |
2162 | && is_breakpoint (loc->owner) | |
2163 | && loc->pspace->num == bl->pspace->num | |
2164 | && loc->owner->enable_state == bp_enabled | |
2165 | && loc->enabled) | |
2166 | /* Add the condition to the vector. This will be used later to send the | |
2167 | conditions to the target. */ | |
2168 | VEC_safe_push (agent_expr_p, bl->target_info.conditions, | |
2169 | loc->cond_bytecode); | |
2170 | } | |
2171 | ||
2172 | return; | |
2173 | } | |
2174 | ||
d3ce09f5 SS |
2175 | /* Parses a command described by string CMD into an agent expression |
2176 | bytecode suitable for evaluation by the bytecode interpreter. | |
2177 | Return NULL if there was any error during parsing. */ | |
2178 | ||
2179 | static struct agent_expr * | |
2180 | parse_cmd_to_aexpr (CORE_ADDR scope, char *cmd) | |
2181 | { | |
2182 | struct cleanup *old_cleanups = 0; | |
2183 | struct expression *expr, **argvec; | |
2184 | struct agent_expr *aexpr = NULL; | |
d3ce09f5 | 2185 | volatile struct gdb_exception ex; |
bbc13ae3 KS |
2186 | const char *cmdrest; |
2187 | const char *format_start, *format_end; | |
d3ce09f5 SS |
2188 | struct format_piece *fpieces; |
2189 | int nargs; | |
2190 | struct gdbarch *gdbarch = get_current_arch (); | |
2191 | ||
2192 | if (!cmd) | |
2193 | return NULL; | |
2194 | ||
2195 | cmdrest = cmd; | |
2196 | ||
2197 | if (*cmdrest == ',') | |
2198 | ++cmdrest; | |
bbc13ae3 | 2199 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2200 | |
2201 | if (*cmdrest++ != '"') | |
2202 | error (_("No format string following the location")); | |
2203 | ||
2204 | format_start = cmdrest; | |
2205 | ||
2206 | fpieces = parse_format_string (&cmdrest); | |
2207 | ||
2208 | old_cleanups = make_cleanup (free_format_pieces_cleanup, &fpieces); | |
2209 | ||
2210 | format_end = cmdrest; | |
2211 | ||
2212 | if (*cmdrest++ != '"') | |
2213 | error (_("Bad format string, non-terminated '\"'.")); | |
2214 | ||
bbc13ae3 | 2215 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2216 | |
2217 | if (!(*cmdrest == ',' || *cmdrest == '\0')) | |
2218 | error (_("Invalid argument syntax")); | |
2219 | ||
2220 | if (*cmdrest == ',') | |
2221 | cmdrest++; | |
bbc13ae3 | 2222 | cmdrest = skip_spaces_const (cmdrest); |
d3ce09f5 SS |
2223 | |
2224 | /* For each argument, make an expression. */ | |
2225 | ||
2226 | argvec = (struct expression **) alloca (strlen (cmd) | |
2227 | * sizeof (struct expression *)); | |
2228 | ||
2229 | nargs = 0; | |
2230 | while (*cmdrest != '\0') | |
2231 | { | |
bbc13ae3 | 2232 | const char *cmd1; |
d3ce09f5 SS |
2233 | |
2234 | cmd1 = cmdrest; | |
2235 | expr = parse_exp_1 (&cmd1, scope, block_for_pc (scope), 1); | |
2236 | argvec[nargs++] = expr; | |
2237 | cmdrest = cmd1; | |
2238 | if (*cmdrest == ',') | |
2239 | ++cmdrest; | |
2240 | } | |
2241 | ||
2242 | /* We don't want to stop processing, so catch any errors | |
2243 | that may show up. */ | |
2244 | TRY_CATCH (ex, RETURN_MASK_ERROR) | |
2245 | { | |
2246 | aexpr = gen_printf (scope, gdbarch, 0, 0, | |
2247 | format_start, format_end - format_start, | |
2248 | fpieces, nargs, argvec); | |
2249 | } | |
2250 | ||
752eb8b4 TT |
2251 | do_cleanups (old_cleanups); |
2252 | ||
d3ce09f5 SS |
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 | ||
d3ce09f5 SS |
2261 | /* We have a valid agent expression, return it. */ |
2262 | return aexpr; | |
2263 | } | |
2264 | ||
2265 | /* Based on location BL, create a list of breakpoint commands to be | |
2266 | passed on to the target. If we have duplicated locations with | |
2267 | different commands, we will add any such to the list. */ | |
2268 | ||
2269 | static void | |
2270 | build_target_command_list (struct bp_location *bl) | |
2271 | { | |
2272 | struct bp_location **locp = NULL, **loc2p; | |
2273 | int null_command_or_parse_error = 0; | |
2274 | int modified = bl->needs_update; | |
2275 | struct bp_location *loc; | |
2276 | ||
2277 | /* For now, limit to agent-style dprintf breakpoints. */ | |
2278 | if (bl->owner->type != bp_dprintf | |
2279 | || strcmp (dprintf_style, dprintf_style_agent) != 0) | |
2280 | return; | |
2281 | ||
2282 | if (!target_can_run_breakpoint_commands ()) | |
2283 | return; | |
2284 | ||
2285 | /* Do a first pass to check for locations with no assigned | |
2286 | conditions or conditions that fail to parse to a valid agent expression | |
2287 | bytecode. If any of these happen, then it's no use to send conditions | |
2288 | to the target since this location will always trigger and generate a | |
2289 | response back to GDB. */ | |
2290 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2291 | { | |
2292 | loc = (*loc2p); | |
2293 | if (is_breakpoint (loc->owner) && loc->pspace->num == bl->pspace->num) | |
2294 | { | |
2295 | if (modified) | |
2296 | { | |
2297 | struct agent_expr *aexpr; | |
2298 | ||
2299 | /* Re-parse the commands since something changed. In that | |
2300 | case we already freed the command bytecodes (see | |
2301 | force_breakpoint_reinsertion). We just | |
2302 | need to parse the command to bytecodes again. */ | |
2303 | aexpr = parse_cmd_to_aexpr (bl->address, | |
2304 | loc->owner->extra_string); | |
2305 | loc->cmd_bytecode = aexpr; | |
2306 | ||
2307 | if (!aexpr) | |
2308 | continue; | |
2309 | } | |
2310 | ||
2311 | /* If we have a NULL bytecode expression, it means something | |
2312 | went wrong or we have a null command expression. */ | |
2313 | if (!loc->cmd_bytecode) | |
2314 | { | |
2315 | null_command_or_parse_error = 1; | |
2316 | break; | |
2317 | } | |
2318 | } | |
2319 | } | |
2320 | ||
2321 | /* If anything failed, then we're not doing target-side commands, | |
2322 | and so clean up. */ | |
2323 | if (null_command_or_parse_error) | |
2324 | { | |
2325 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2326 | { | |
2327 | loc = (*loc2p); | |
2328 | if (is_breakpoint (loc->owner) | |
2329 | && loc->pspace->num == bl->pspace->num) | |
2330 | { | |
2331 | /* Only go as far as the first NULL bytecode is | |
2332 | located. */ | |
40fb6c5e | 2333 | if (loc->cmd_bytecode == NULL) |
d3ce09f5 SS |
2334 | return; |
2335 | ||
40fb6c5e HZ |
2336 | free_agent_expr (loc->cmd_bytecode); |
2337 | loc->cmd_bytecode = NULL; | |
d3ce09f5 SS |
2338 | } |
2339 | } | |
2340 | } | |
2341 | ||
2342 | /* No NULL commands or failed bytecode generation. Build a command list | |
2343 | for this location's address. */ | |
2344 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, bl->address) | |
2345 | { | |
2346 | loc = (*loc2p); | |
2347 | if (loc->owner->extra_string | |
2348 | && is_breakpoint (loc->owner) | |
2349 | && loc->pspace->num == bl->pspace->num | |
2350 | && loc->owner->enable_state == bp_enabled | |
2351 | && loc->enabled) | |
2352 | /* Add the command to the vector. This will be used later | |
2353 | to send the commands to the target. */ | |
2354 | VEC_safe_push (agent_expr_p, bl->target_info.tcommands, | |
2355 | loc->cmd_bytecode); | |
2356 | } | |
2357 | ||
2358 | bl->target_info.persist = 0; | |
2359 | /* Maybe flag this location as persistent. */ | |
2360 | if (bl->owner->type == bp_dprintf && disconnected_dprintf) | |
2361 | bl->target_info.persist = 1; | |
2362 | } | |
2363 | ||
35df4500 TJB |
2364 | /* Insert a low-level "breakpoint" of some type. BL is the breakpoint |
2365 | location. Any error messages are printed to TMP_ERROR_STREAM; and | |
3fbb6ffa | 2366 | DISABLED_BREAKS, and HW_BREAKPOINT_ERROR are used to report problems. |
c30eee59 TJB |
2367 | Returns 0 for success, 1 if the bp_location type is not supported or |
2368 | -1 for failure. | |
879bfdc2 | 2369 | |
4a64f543 MS |
2370 | NOTE drow/2003-09-09: This routine could be broken down to an |
2371 | object-style method for each breakpoint or catchpoint type. */ | |
26bb91f3 | 2372 | static int |
35df4500 | 2373 | insert_bp_location (struct bp_location *bl, |
26bb91f3 | 2374 | struct ui_file *tmp_error_stream, |
3fbb6ffa | 2375 | int *disabled_breaks, |
dd61ec5c MW |
2376 | int *hw_breakpoint_error, |
2377 | int *hw_bp_error_explained_already) | |
879bfdc2 DJ |
2378 | { |
2379 | int val = 0; | |
dd61ec5c MW |
2380 | char *hw_bp_err_string = NULL; |
2381 | struct gdb_exception e; | |
879bfdc2 | 2382 | |
b775012e | 2383 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2384 | return 0; |
2385 | ||
35c63cd8 JB |
2386 | /* Note we don't initialize bl->target_info, as that wipes out |
2387 | the breakpoint location's shadow_contents if the breakpoint | |
2388 | is still inserted at that location. This in turn breaks | |
2389 | target_read_memory which depends on these buffers when | |
2390 | a memory read is requested at the breakpoint location: | |
2391 | Once the target_info has been wiped, we fail to see that | |
2392 | we have a breakpoint inserted at that address and thus | |
2393 | read the breakpoint instead of returning the data saved in | |
2394 | the breakpoint location's shadow contents. */ | |
35df4500 TJB |
2395 | bl->target_info.placed_address = bl->address; |
2396 | bl->target_info.placed_address_space = bl->pspace->aspace; | |
f1310107 | 2397 | bl->target_info.length = bl->length; |
8181d85f | 2398 | |
b775012e LM |
2399 | /* When working with target-side conditions, we must pass all the conditions |
2400 | for the same breakpoint address down to the target since GDB will not | |
2401 | insert those locations. With a list of breakpoint conditions, the target | |
2402 | can decide when to stop and notify GDB. */ | |
2403 | ||
2404 | if (is_breakpoint (bl->owner)) | |
2405 | { | |
2406 | build_target_condition_list (bl); | |
d3ce09f5 SS |
2407 | build_target_command_list (bl); |
2408 | /* Reset the modification marker. */ | |
b775012e LM |
2409 | bl->needs_update = 0; |
2410 | } | |
2411 | ||
35df4500 TJB |
2412 | if (bl->loc_type == bp_loc_software_breakpoint |
2413 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
879bfdc2 | 2414 | { |
35df4500 | 2415 | if (bl->owner->type != bp_hardware_breakpoint) |
765dc015 VP |
2416 | { |
2417 | /* If the explicitly specified breakpoint type | |
2418 | is not hardware breakpoint, check the memory map to see | |
2419 | if the breakpoint address is in read only memory or not. | |
4a64f543 | 2420 | |
765dc015 VP |
2421 | Two important cases are: |
2422 | - location type is not hardware breakpoint, memory | |
2423 | is readonly. We change the type of the location to | |
2424 | hardware breakpoint. | |
4a64f543 MS |
2425 | - location type is hardware breakpoint, memory is |
2426 | read-write. This means we've previously made the | |
2427 | location hardware one, but then the memory map changed, | |
2428 | so we undo. | |
765dc015 | 2429 | |
4a64f543 MS |
2430 | When breakpoints are removed, remove_breakpoints will use |
2431 | location types we've just set here, the only possible | |
2432 | problem is that memory map has changed during running | |
2433 | program, but it's not going to work anyway with current | |
2434 | gdb. */ | |
765dc015 | 2435 | struct mem_region *mr |
35df4500 | 2436 | = lookup_mem_region (bl->target_info.placed_address); |
765dc015 VP |
2437 | |
2438 | if (mr) | |
2439 | { | |
2440 | if (automatic_hardware_breakpoints) | |
2441 | { | |
765dc015 VP |
2442 | enum bp_loc_type new_type; |
2443 | ||
2444 | if (mr->attrib.mode != MEM_RW) | |
2445 | new_type = bp_loc_hardware_breakpoint; | |
2446 | else | |
2447 | new_type = bp_loc_software_breakpoint; | |
2448 | ||
35df4500 | 2449 | if (new_type != bl->loc_type) |
765dc015 VP |
2450 | { |
2451 | static int said = 0; | |
cc59ec59 | 2452 | |
35df4500 | 2453 | bl->loc_type = new_type; |
765dc015 VP |
2454 | if (!said) |
2455 | { | |
3e43a32a MS |
2456 | fprintf_filtered (gdb_stdout, |
2457 | _("Note: automatically using " | |
2458 | "hardware breakpoints for " | |
2459 | "read-only addresses.\n")); | |
765dc015 VP |
2460 | said = 1; |
2461 | } | |
2462 | } | |
2463 | } | |
35df4500 | 2464 | else if (bl->loc_type == bp_loc_software_breakpoint |
765dc015 | 2465 | && mr->attrib.mode != MEM_RW) |
3e43a32a MS |
2466 | warning (_("cannot set software breakpoint " |
2467 | "at readonly address %s"), | |
35df4500 | 2468 | paddress (bl->gdbarch, bl->address)); |
765dc015 VP |
2469 | } |
2470 | } | |
2471 | ||
879bfdc2 DJ |
2472 | /* First check to see if we have to handle an overlay. */ |
2473 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
2474 | || bl->section == NULL |
2475 | || !(section_is_overlay (bl->section))) | |
879bfdc2 DJ |
2476 | { |
2477 | /* No overlay handling: just set the breakpoint. */ | |
dd61ec5c MW |
2478 | TRY_CATCH (e, RETURN_MASK_ALL) |
2479 | { | |
2480 | val = bl->owner->ops->insert_location (bl); | |
2481 | } | |
2482 | if (e.reason < 0) | |
2483 | { | |
2484 | val = 1; | |
2485 | hw_bp_err_string = (char *) e.message; | |
2486 | } | |
879bfdc2 DJ |
2487 | } |
2488 | else | |
2489 | { | |
4a64f543 | 2490 | /* This breakpoint is in an overlay section. |
879bfdc2 DJ |
2491 | Shall we set a breakpoint at the LMA? */ |
2492 | if (!overlay_events_enabled) | |
2493 | { | |
2494 | /* Yes -- overlay event support is not active, | |
2495 | so we must try to set a breakpoint at the LMA. | |
2496 | This will not work for a hardware breakpoint. */ | |
35df4500 | 2497 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
8a3fe4f8 | 2498 | warning (_("hardware breakpoint %d not supported in overlay!"), |
35df4500 | 2499 | bl->owner->number); |
879bfdc2 DJ |
2500 | else |
2501 | { | |
35df4500 TJB |
2502 | CORE_ADDR addr = overlay_unmapped_address (bl->address, |
2503 | bl->section); | |
879bfdc2 | 2504 | /* Set a software (trap) breakpoint at the LMA. */ |
35df4500 TJB |
2505 | bl->overlay_target_info = bl->target_info; |
2506 | bl->overlay_target_info.placed_address = addr; | |
2507 | val = target_insert_breakpoint (bl->gdbarch, | |
2508 | &bl->overlay_target_info); | |
879bfdc2 | 2509 | if (val != 0) |
99361f52 | 2510 | fprintf_unfiltered (tmp_error_stream, |
3e43a32a MS |
2511 | "Overlay breakpoint %d " |
2512 | "failed: in ROM?\n", | |
35df4500 | 2513 | bl->owner->number); |
879bfdc2 DJ |
2514 | } |
2515 | } | |
2516 | /* Shall we set a breakpoint at the VMA? */ | |
35df4500 | 2517 | if (section_is_mapped (bl->section)) |
879bfdc2 DJ |
2518 | { |
2519 | /* Yes. This overlay section is mapped into memory. */ | |
dd61ec5c MW |
2520 | TRY_CATCH (e, RETURN_MASK_ALL) |
2521 | { | |
2522 | val = bl->owner->ops->insert_location (bl); | |
2523 | } | |
2524 | if (e.reason < 0) | |
2525 | { | |
2526 | val = 1; | |
2527 | hw_bp_err_string = (char *) e.message; | |
2528 | } | |
879bfdc2 DJ |
2529 | } |
2530 | else | |
2531 | { | |
2532 | /* No. This breakpoint will not be inserted. | |
2533 | No error, but do not mark the bp as 'inserted'. */ | |
2534 | return 0; | |
2535 | } | |
2536 | } | |
2537 | ||
2538 | if (val) | |
2539 | { | |
2540 | /* Can't set the breakpoint. */ | |
35df4500 | 2541 | if (solib_name_from_address (bl->pspace, bl->address)) |
879bfdc2 | 2542 | { |
4a64f543 | 2543 | /* See also: disable_breakpoints_in_shlibs. */ |
879bfdc2 | 2544 | val = 0; |
35df4500 | 2545 | bl->shlib_disabled = 1; |
8d3788bd | 2546 | observer_notify_breakpoint_modified (bl->owner); |
3fbb6ffa TJB |
2547 | if (!*disabled_breaks) |
2548 | { | |
2549 | fprintf_unfiltered (tmp_error_stream, | |
2550 | "Cannot insert breakpoint %d.\n", | |
2551 | bl->owner->number); | |
2552 | fprintf_unfiltered (tmp_error_stream, | |
2553 | "Temporarily disabling shared " | |
2554 | "library breakpoints:\n"); | |
2555 | } | |
2556 | *disabled_breaks = 1; | |
879bfdc2 | 2557 | fprintf_unfiltered (tmp_error_stream, |
35df4500 | 2558 | "breakpoint #%d\n", bl->owner->number); |
879bfdc2 DJ |
2559 | } |
2560 | else | |
879bfdc2 | 2561 | { |
35df4500 | 2562 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
879bfdc2 | 2563 | { |
dd61ec5c MW |
2564 | *hw_breakpoint_error = 1; |
2565 | *hw_bp_error_explained_already = hw_bp_err_string != NULL; | |
2566 | fprintf_unfiltered (tmp_error_stream, | |
2567 | "Cannot insert hardware breakpoint %d%s", | |
2568 | bl->owner->number, hw_bp_err_string ? ":" : ".\n"); | |
2569 | if (hw_bp_err_string) | |
2570 | fprintf_unfiltered (tmp_error_stream, "%s.\n", hw_bp_err_string); | |
879bfdc2 DJ |
2571 | } |
2572 | else | |
2573 | { | |
2574 | fprintf_unfiltered (tmp_error_stream, | |
2575 | "Cannot insert breakpoint %d.\n", | |
35df4500 | 2576 | bl->owner->number); |
879bfdc2 DJ |
2577 | fprintf_filtered (tmp_error_stream, |
2578 | "Error accessing memory address "); | |
35df4500 | 2579 | fputs_filtered (paddress (bl->gdbarch, bl->address), |
5af949e3 | 2580 | tmp_error_stream); |
879bfdc2 DJ |
2581 | fprintf_filtered (tmp_error_stream, ": %s.\n", |
2582 | safe_strerror (val)); | |
2583 | } | |
2584 | ||
2585 | } | |
2586 | } | |
2587 | else | |
35df4500 | 2588 | bl->inserted = 1; |
879bfdc2 DJ |
2589 | |
2590 | return val; | |
2591 | } | |
2592 | ||
35df4500 | 2593 | else if (bl->loc_type == bp_loc_hardware_watchpoint |
879bfdc2 | 2594 | /* NOTE drow/2003-09-08: This state only exists for removing |
4a64f543 | 2595 | watchpoints. It's not clear that it's necessary... */ |
35df4500 | 2596 | && bl->owner->disposition != disp_del_at_next_stop) |
879bfdc2 | 2597 | { |
77b06cd7 TJB |
2598 | gdb_assert (bl->owner->ops != NULL |
2599 | && bl->owner->ops->insert_location != NULL); | |
2600 | ||
2601 | val = bl->owner->ops->insert_location (bl); | |
85d721b8 PA |
2602 | |
2603 | /* If trying to set a read-watchpoint, and it turns out it's not | |
2604 | supported, try emulating one with an access watchpoint. */ | |
35df4500 | 2605 | if (val == 1 && bl->watchpoint_type == hw_read) |
85d721b8 PA |
2606 | { |
2607 | struct bp_location *loc, **loc_temp; | |
2608 | ||
2609 | /* But don't try to insert it, if there's already another | |
2610 | hw_access location that would be considered a duplicate | |
2611 | of this one. */ | |
2612 | ALL_BP_LOCATIONS (loc, loc_temp) | |
35df4500 | 2613 | if (loc != bl |
85d721b8 | 2614 | && loc->watchpoint_type == hw_access |
35df4500 | 2615 | && watchpoint_locations_match (bl, loc)) |
85d721b8 | 2616 | { |
35df4500 TJB |
2617 | bl->duplicate = 1; |
2618 | bl->inserted = 1; | |
2619 | bl->target_info = loc->target_info; | |
2620 | bl->watchpoint_type = hw_access; | |
85d721b8 PA |
2621 | val = 0; |
2622 | break; | |
2623 | } | |
2624 | ||
2625 | if (val == 1) | |
2626 | { | |
77b06cd7 TJB |
2627 | bl->watchpoint_type = hw_access; |
2628 | val = bl->owner->ops->insert_location (bl); | |
2629 | ||
2630 | if (val) | |
2631 | /* Back to the original value. */ | |
2632 | bl->watchpoint_type = hw_read; | |
85d721b8 PA |
2633 | } |
2634 | } | |
2635 | ||
35df4500 | 2636 | bl->inserted = (val == 0); |
879bfdc2 DJ |
2637 | } |
2638 | ||
35df4500 | 2639 | else if (bl->owner->type == bp_catchpoint) |
879bfdc2 | 2640 | { |
77b06cd7 TJB |
2641 | gdb_assert (bl->owner->ops != NULL |
2642 | && bl->owner->ops->insert_location != NULL); | |
2643 | ||
2644 | val = bl->owner->ops->insert_location (bl); | |
2645 | if (val) | |
2646 | { | |
2647 | bl->owner->enable_state = bp_disabled; | |
2648 | ||
2649 | if (val == 1) | |
2650 | warning (_("\ | |
2651 | Error inserting catchpoint %d: Your system does not support this type\n\ | |
2652 | of catchpoint."), bl->owner->number); | |
2653 | else | |
2654 | warning (_("Error inserting catchpoint %d."), bl->owner->number); | |
2655 | } | |
2656 | ||
2657 | bl->inserted = (val == 0); | |
1640b821 DJ |
2658 | |
2659 | /* We've already printed an error message if there was a problem | |
2660 | inserting this catchpoint, and we've disabled the catchpoint, | |
2661 | so just return success. */ | |
2662 | return 0; | |
879bfdc2 DJ |
2663 | } |
2664 | ||
2665 | return 0; | |
2666 | } | |
2667 | ||
6c95b8df PA |
2668 | /* This function is called when program space PSPACE is about to be |
2669 | deleted. It takes care of updating breakpoints to not reference | |
2670 | PSPACE anymore. */ | |
2671 | ||
2672 | void | |
2673 | breakpoint_program_space_exit (struct program_space *pspace) | |
2674 | { | |
2675 | struct breakpoint *b, *b_temp; | |
876fa593 | 2676 | struct bp_location *loc, **loc_temp; |
6c95b8df PA |
2677 | |
2678 | /* Remove any breakpoint that was set through this program space. */ | |
2679 | ALL_BREAKPOINTS_SAFE (b, b_temp) | |
2680 | { | |
2681 | if (b->pspace == pspace) | |
2682 | delete_breakpoint (b); | |
2683 | } | |
2684 | ||
2685 | /* Breakpoints set through other program spaces could have locations | |
2686 | bound to PSPACE as well. Remove those. */ | |
876fa593 | 2687 | ALL_BP_LOCATIONS (loc, loc_temp) |
6c95b8df PA |
2688 | { |
2689 | struct bp_location *tmp; | |
2690 | ||
2691 | if (loc->pspace == pspace) | |
2692 | { | |
2bdf28a0 | 2693 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
6c95b8df PA |
2694 | if (loc->owner->loc == loc) |
2695 | loc->owner->loc = loc->next; | |
2696 | else | |
2697 | for (tmp = loc->owner->loc; tmp->next != NULL; tmp = tmp->next) | |
2698 | if (tmp->next == loc) | |
2699 | { | |
2700 | tmp->next = loc->next; | |
2701 | break; | |
2702 | } | |
2703 | } | |
2704 | } | |
2705 | ||
2706 | /* Now update the global location list to permanently delete the | |
2707 | removed locations above. */ | |
2708 | update_global_location_list (0); | |
2709 | } | |
2710 | ||
74960c60 VP |
2711 | /* Make sure all breakpoints are inserted in inferior. |
2712 | Throws exception on any error. | |
2713 | A breakpoint that is already inserted won't be inserted | |
2714 | again, so calling this function twice is safe. */ | |
2715 | void | |
2716 | insert_breakpoints (void) | |
2717 | { | |
2718 | struct breakpoint *bpt; | |
2719 | ||
2720 | ALL_BREAKPOINTS (bpt) | |
2721 | if (is_hardware_watchpoint (bpt)) | |
3a5c3e22 PA |
2722 | { |
2723 | struct watchpoint *w = (struct watchpoint *) bpt; | |
2724 | ||
2725 | update_watchpoint (w, 0 /* don't reparse. */); | |
2726 | } | |
74960c60 | 2727 | |
b60e7edf | 2728 | update_global_location_list (1); |
74960c60 | 2729 | |
c35b1492 PA |
2730 | /* update_global_location_list does not insert breakpoints when |
2731 | always_inserted_mode is not enabled. Explicitly insert them | |
2732 | now. */ | |
2733 | if (!breakpoints_always_inserted_mode ()) | |
74960c60 VP |
2734 | insert_breakpoint_locations (); |
2735 | } | |
2736 | ||
20388dd6 YQ |
2737 | /* Invoke CALLBACK for each of bp_location. */ |
2738 | ||
2739 | void | |
2740 | iterate_over_bp_locations (walk_bp_location_callback callback) | |
2741 | { | |
2742 | struct bp_location *loc, **loc_tmp; | |
2743 | ||
2744 | ALL_BP_LOCATIONS (loc, loc_tmp) | |
2745 | { | |
2746 | callback (loc, NULL); | |
2747 | } | |
2748 | } | |
2749 | ||
b775012e LM |
2750 | /* This is used when we need to synch breakpoint conditions between GDB and the |
2751 | target. It is the case with deleting and disabling of breakpoints when using | |
2752 | always-inserted mode. */ | |
2753 | ||
2754 | static void | |
2755 | update_inserted_breakpoint_locations (void) | |
2756 | { | |
2757 | struct bp_location *bl, **blp_tmp; | |
2758 | int error_flag = 0; | |
2759 | int val = 0; | |
2760 | int disabled_breaks = 0; | |
2761 | int hw_breakpoint_error = 0; | |
dd61ec5c | 2762 | int hw_bp_details_reported = 0; |
b775012e LM |
2763 | |
2764 | struct ui_file *tmp_error_stream = mem_fileopen (); | |
2765 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); | |
2766 | ||
2767 | /* Explicitly mark the warning -- this will only be printed if | |
2768 | there was an error. */ | |
2769 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
2770 | ||
2771 | save_current_space_and_thread (); | |
2772 | ||
2773 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
2774 | { | |
2775 | /* We only want to update software breakpoints and hardware | |
2776 | breakpoints. */ | |
2777 | if (!is_breakpoint (bl->owner)) | |
2778 | continue; | |
2779 | ||
2780 | /* We only want to update locations that are already inserted | |
2781 | and need updating. This is to avoid unwanted insertion during | |
2782 | deletion of breakpoints. */ | |
2783 | if (!bl->inserted || (bl->inserted && !bl->needs_update)) | |
2784 | continue; | |
2785 | ||
2786 | switch_to_program_space_and_thread (bl->pspace); | |
2787 | ||
2788 | /* For targets that support global breakpoints, there's no need | |
2789 | to select an inferior to insert breakpoint to. In fact, even | |
2790 | if we aren't attached to any process yet, we should still | |
2791 | insert breakpoints. */ | |
f5656ead | 2792 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
b775012e LM |
2793 | && ptid_equal (inferior_ptid, null_ptid)) |
2794 | continue; | |
2795 | ||
2796 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, | |
dd61ec5c | 2797 | &hw_breakpoint_error, &hw_bp_details_reported); |
b775012e LM |
2798 | if (val) |
2799 | error_flag = val; | |
2800 | } | |
2801 | ||
2802 | if (error_flag) | |
2803 | { | |
2804 | target_terminal_ours_for_output (); | |
2805 | error_stream (tmp_error_stream); | |
2806 | } | |
2807 | ||
2808 | do_cleanups (cleanups); | |
2809 | } | |
2810 | ||
c30eee59 | 2811 | /* Used when starting or continuing the program. */ |
c906108c | 2812 | |
74960c60 VP |
2813 | static void |
2814 | insert_breakpoint_locations (void) | |
c906108c | 2815 | { |
a5606eee | 2816 | struct breakpoint *bpt; |
35df4500 | 2817 | struct bp_location *bl, **blp_tmp; |
eacd795a | 2818 | int error_flag = 0; |
c906108c | 2819 | int val = 0; |
3fbb6ffa | 2820 | int disabled_breaks = 0; |
81d0cc19 | 2821 | int hw_breakpoint_error = 0; |
dd61ec5c | 2822 | int hw_bp_error_explained_already = 0; |
c906108c | 2823 | |
81d0cc19 | 2824 | struct ui_file *tmp_error_stream = mem_fileopen (); |
f7545552 | 2825 | struct cleanup *cleanups = make_cleanup_ui_file_delete (tmp_error_stream); |
74960c60 | 2826 | |
81d0cc19 GS |
2827 | /* Explicitly mark the warning -- this will only be printed if |
2828 | there was an error. */ | |
2829 | fprintf_unfiltered (tmp_error_stream, "Warning:\n"); | |
6c95b8df PA |
2830 | |
2831 | save_current_space_and_thread (); | |
2832 | ||
35df4500 | 2833 | ALL_BP_LOCATIONS (bl, blp_tmp) |
879bfdc2 | 2834 | { |
b775012e | 2835 | if (!should_be_inserted (bl) || (bl->inserted && !bl->needs_update)) |
879bfdc2 DJ |
2836 | continue; |
2837 | ||
4a64f543 MS |
2838 | /* There is no point inserting thread-specific breakpoints if |
2839 | the thread no longer exists. ALL_BP_LOCATIONS bp_location | |
2840 | has BL->OWNER always non-NULL. */ | |
35df4500 TJB |
2841 | if (bl->owner->thread != -1 |
2842 | && !valid_thread_id (bl->owner->thread)) | |
f365de73 AS |
2843 | continue; |
2844 | ||
35df4500 | 2845 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df PA |
2846 | |
2847 | /* For targets that support global breakpoints, there's no need | |
2848 | to select an inferior to insert breakpoint to. In fact, even | |
2849 | if we aren't attached to any process yet, we should still | |
2850 | insert breakpoints. */ | |
f5656ead | 2851 | if (!gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
2852 | && ptid_equal (inferior_ptid, null_ptid)) |
2853 | continue; | |
2854 | ||
3fbb6ffa | 2855 | val = insert_bp_location (bl, tmp_error_stream, &disabled_breaks, |
dd61ec5c | 2856 | &hw_breakpoint_error, &hw_bp_error_explained_already); |
879bfdc2 | 2857 | if (val) |
eacd795a | 2858 | error_flag = val; |
879bfdc2 | 2859 | } |
c906108c | 2860 | |
4a64f543 MS |
2861 | /* If we failed to insert all locations of a watchpoint, remove |
2862 | them, as half-inserted watchpoint is of limited use. */ | |
a5606eee VP |
2863 | ALL_BREAKPOINTS (bpt) |
2864 | { | |
2865 | int some_failed = 0; | |
2866 | struct bp_location *loc; | |
2867 | ||
2868 | if (!is_hardware_watchpoint (bpt)) | |
2869 | continue; | |
2870 | ||
d6b74ac4 | 2871 | if (!breakpoint_enabled (bpt)) |
a5606eee | 2872 | continue; |
74960c60 VP |
2873 | |
2874 | if (bpt->disposition == disp_del_at_next_stop) | |
2875 | continue; | |
a5606eee VP |
2876 | |
2877 | for (loc = bpt->loc; loc; loc = loc->next) | |
56710373 | 2878 | if (!loc->inserted && should_be_inserted (loc)) |
a5606eee VP |
2879 | { |
2880 | some_failed = 1; | |
2881 | break; | |
2882 | } | |
2883 | if (some_failed) | |
2884 | { | |
2885 | for (loc = bpt->loc; loc; loc = loc->next) | |
2886 | if (loc->inserted) | |
2887 | remove_breakpoint (loc, mark_uninserted); | |
2888 | ||
2889 | hw_breakpoint_error = 1; | |
2890 | fprintf_unfiltered (tmp_error_stream, | |
2891 | "Could not insert hardware watchpoint %d.\n", | |
2892 | bpt->number); | |
eacd795a | 2893 | error_flag = -1; |
a5606eee VP |
2894 | } |
2895 | } | |
2896 | ||
eacd795a | 2897 | if (error_flag) |
81d0cc19 GS |
2898 | { |
2899 | /* If a hardware breakpoint or watchpoint was inserted, add a | |
2900 | message about possibly exhausted resources. */ | |
dd61ec5c | 2901 | if (hw_breakpoint_error && !hw_bp_error_explained_already) |
81d0cc19 | 2902 | { |
c6510018 MS |
2903 | fprintf_unfiltered (tmp_error_stream, |
2904 | "Could not insert hardware breakpoints:\n\ | |
2905 | You may have requested too many hardware breakpoints/watchpoints.\n"); | |
81d0cc19 | 2906 | } |
81d0cc19 GS |
2907 | target_terminal_ours_for_output (); |
2908 | error_stream (tmp_error_stream); | |
2909 | } | |
f7545552 TT |
2910 | |
2911 | do_cleanups (cleanups); | |
c906108c SS |
2912 | } |
2913 | ||
c30eee59 TJB |
2914 | /* Used when the program stops. |
2915 | Returns zero if successful, or non-zero if there was a problem | |
2916 | removing a breakpoint location. */ | |
2917 | ||
c906108c | 2918 | int |
fba45db2 | 2919 | remove_breakpoints (void) |
c906108c | 2920 | { |
35df4500 | 2921 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 2922 | int val = 0; |
c906108c | 2923 | |
35df4500 | 2924 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2925 | { |
1e4d1764 | 2926 | if (bl->inserted && !is_tracepoint (bl->owner)) |
35df4500 | 2927 | val |= remove_breakpoint (bl, mark_uninserted); |
c5aa993b | 2928 | } |
3a1bae8e | 2929 | return val; |
c906108c SS |
2930 | } |
2931 | ||
6c95b8df PA |
2932 | /* Remove breakpoints of process PID. */ |
2933 | ||
2934 | int | |
2935 | remove_breakpoints_pid (int pid) | |
2936 | { | |
35df4500 | 2937 | struct bp_location *bl, **blp_tmp; |
6c95b8df PA |
2938 | int val; |
2939 | struct inferior *inf = find_inferior_pid (pid); | |
2940 | ||
35df4500 | 2941 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 2942 | { |
35df4500 | 2943 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2944 | continue; |
2945 | ||
d3ce09f5 SS |
2946 | if (bl->owner->type == bp_dprintf) |
2947 | continue; | |
2948 | ||
35df4500 | 2949 | if (bl->inserted) |
6c95b8df | 2950 | { |
35df4500 | 2951 | val = remove_breakpoint (bl, mark_uninserted); |
6c95b8df PA |
2952 | if (val != 0) |
2953 | return val; | |
2954 | } | |
2955 | } | |
2956 | return 0; | |
2957 | } | |
2958 | ||
c906108c | 2959 | int |
fba45db2 | 2960 | reattach_breakpoints (int pid) |
c906108c | 2961 | { |
6c95b8df | 2962 | struct cleanup *old_chain; |
35df4500 | 2963 | struct bp_location *bl, **blp_tmp; |
c906108c | 2964 | int val; |
86b887df | 2965 | struct ui_file *tmp_error_stream; |
dd61ec5c | 2966 | int dummy1 = 0, dummy2 = 0, dummy3 = 0; |
6c95b8df PA |
2967 | struct inferior *inf; |
2968 | struct thread_info *tp; | |
2969 | ||
2970 | tp = any_live_thread_of_process (pid); | |
2971 | if (tp == NULL) | |
2972 | return 1; | |
2973 | ||
2974 | inf = find_inferior_pid (pid); | |
2975 | old_chain = save_inferior_ptid (); | |
2976 | ||
2977 | inferior_ptid = tp->ptid; | |
a4954f26 | 2978 | |
86b887df | 2979 | tmp_error_stream = mem_fileopen (); |
a4954f26 | 2980 | make_cleanup_ui_file_delete (tmp_error_stream); |
c906108c | 2981 | |
35df4500 | 2982 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 2983 | { |
35df4500 | 2984 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
2985 | continue; |
2986 | ||
35df4500 | 2987 | if (bl->inserted) |
c5aa993b | 2988 | { |
35df4500 | 2989 | bl->inserted = 0; |
dd61ec5c | 2990 | val = insert_bp_location (bl, tmp_error_stream, &dummy1, &dummy2, &dummy3); |
c5aa993b JM |
2991 | if (val != 0) |
2992 | { | |
ce696e05 | 2993 | do_cleanups (old_chain); |
c5aa993b JM |
2994 | return val; |
2995 | } | |
2996 | } | |
2997 | } | |
ce696e05 | 2998 | do_cleanups (old_chain); |
c906108c SS |
2999 | return 0; |
3000 | } | |
3001 | ||
e58b0e63 PA |
3002 | static int internal_breakpoint_number = -1; |
3003 | ||
84f4c1fe PM |
3004 | /* Set the breakpoint number of B, depending on the value of INTERNAL. |
3005 | If INTERNAL is non-zero, the breakpoint number will be populated | |
3006 | from internal_breakpoint_number and that variable decremented. | |
e5dd4106 | 3007 | Otherwise the breakpoint number will be populated from |
84f4c1fe PM |
3008 | breakpoint_count and that value incremented. Internal breakpoints |
3009 | do not set the internal var bpnum. */ | |
3010 | static void | |
3011 | set_breakpoint_number (int internal, struct breakpoint *b) | |
3012 | { | |
3013 | if (internal) | |
3014 | b->number = internal_breakpoint_number--; | |
3015 | else | |
3016 | { | |
3017 | set_breakpoint_count (breakpoint_count + 1); | |
3018 | b->number = breakpoint_count; | |
3019 | } | |
3020 | } | |
3021 | ||
e62c965a | 3022 | static struct breakpoint * |
a6d9a66e | 3023 | create_internal_breakpoint (struct gdbarch *gdbarch, |
06edf0c0 | 3024 | CORE_ADDR address, enum bptype type, |
c0a91b2b | 3025 | const struct breakpoint_ops *ops) |
e62c965a | 3026 | { |
e62c965a PP |
3027 | struct symtab_and_line sal; |
3028 | struct breakpoint *b; | |
3029 | ||
4a64f543 | 3030 | init_sal (&sal); /* Initialize to zeroes. */ |
e62c965a PP |
3031 | |
3032 | sal.pc = address; | |
3033 | sal.section = find_pc_overlay (sal.pc); | |
6c95b8df | 3034 | sal.pspace = current_program_space; |
e62c965a | 3035 | |
06edf0c0 | 3036 | b = set_raw_breakpoint (gdbarch, sal, type, ops); |
e62c965a PP |
3037 | b->number = internal_breakpoint_number--; |
3038 | b->disposition = disp_donttouch; | |
3039 | ||
3040 | return b; | |
3041 | } | |
3042 | ||
17450429 PP |
3043 | static const char *const longjmp_names[] = |
3044 | { | |
3045 | "longjmp", "_longjmp", "siglongjmp", "_siglongjmp" | |
3046 | }; | |
3047 | #define NUM_LONGJMP_NAMES ARRAY_SIZE(longjmp_names) | |
3048 | ||
3049 | /* Per-objfile data private to breakpoint.c. */ | |
3050 | struct breakpoint_objfile_data | |
3051 | { | |
3052 | /* Minimal symbol for "_ovly_debug_event" (if any). */ | |
3053 | struct minimal_symbol *overlay_msym; | |
3054 | ||
3055 | /* Minimal symbol(s) for "longjmp", "siglongjmp", etc. (if any). */ | |
3056 | struct minimal_symbol *longjmp_msym[NUM_LONGJMP_NAMES]; | |
3057 | ||
28106bc2 SDJ |
3058 | /* True if we have looked for longjmp probes. */ |
3059 | int longjmp_searched; | |
3060 | ||
3061 | /* SystemTap probe points for longjmp (if any). */ | |
3062 | VEC (probe_p) *longjmp_probes; | |
3063 | ||
17450429 PP |
3064 | /* Minimal symbol for "std::terminate()" (if any). */ |
3065 | struct minimal_symbol *terminate_msym; | |
3066 | ||
3067 | /* Minimal symbol for "_Unwind_DebugHook" (if any). */ | |
3068 | struct minimal_symbol *exception_msym; | |
28106bc2 SDJ |
3069 | |
3070 | /* True if we have looked for exception probes. */ | |
3071 | int exception_searched; | |
3072 | ||
3073 | /* SystemTap probe points for unwinding (if any). */ | |
3074 | VEC (probe_p) *exception_probes; | |
17450429 PP |
3075 | }; |
3076 | ||
3077 | static const struct objfile_data *breakpoint_objfile_key; | |
3078 | ||
3079 | /* Minimal symbol not found sentinel. */ | |
3080 | static struct minimal_symbol msym_not_found; | |
3081 | ||
3082 | /* Returns TRUE if MSYM point to the "not found" sentinel. */ | |
3083 | ||
3084 | static int | |
3085 | msym_not_found_p (const struct minimal_symbol *msym) | |
3086 | { | |
3087 | return msym == &msym_not_found; | |
3088 | } | |
3089 | ||
3090 | /* Return per-objfile data needed by breakpoint.c. | |
3091 | Allocate the data if necessary. */ | |
3092 | ||
3093 | static struct breakpoint_objfile_data * | |
3094 | get_breakpoint_objfile_data (struct objfile *objfile) | |
3095 | { | |
3096 | struct breakpoint_objfile_data *bp_objfile_data; | |
3097 | ||
3098 | bp_objfile_data = objfile_data (objfile, breakpoint_objfile_key); | |
3099 | if (bp_objfile_data == NULL) | |
3100 | { | |
3101 | bp_objfile_data = obstack_alloc (&objfile->objfile_obstack, | |
3102 | sizeof (*bp_objfile_data)); | |
3103 | ||
3104 | memset (bp_objfile_data, 0, sizeof (*bp_objfile_data)); | |
3105 | set_objfile_data (objfile, breakpoint_objfile_key, bp_objfile_data); | |
3106 | } | |
3107 | return bp_objfile_data; | |
3108 | } | |
3109 | ||
28106bc2 SDJ |
3110 | static void |
3111 | free_breakpoint_probes (struct objfile *obj, void *data) | |
3112 | { | |
3113 | struct breakpoint_objfile_data *bp_objfile_data = data; | |
3114 | ||
3115 | VEC_free (probe_p, bp_objfile_data->longjmp_probes); | |
3116 | VEC_free (probe_p, bp_objfile_data->exception_probes); | |
3117 | } | |
3118 | ||
e62c965a | 3119 | static void |
af02033e | 3120 | create_overlay_event_breakpoint (void) |
e62c965a | 3121 | { |
69de3c6a | 3122 | struct objfile *objfile; |
af02033e | 3123 | const char *const func_name = "_ovly_debug_event"; |
e62c965a | 3124 | |
69de3c6a PP |
3125 | ALL_OBJFILES (objfile) |
3126 | { | |
3127 | struct breakpoint *b; | |
17450429 PP |
3128 | struct breakpoint_objfile_data *bp_objfile_data; |
3129 | CORE_ADDR addr; | |
69de3c6a | 3130 | |
17450429 PP |
3131 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3132 | ||
3133 | if (msym_not_found_p (bp_objfile_data->overlay_msym)) | |
3134 | continue; | |
3135 | ||
3136 | if (bp_objfile_data->overlay_msym == NULL) | |
3137 | { | |
3138 | struct minimal_symbol *m; | |
3139 | ||
3140 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3141 | if (m == NULL) | |
3142 | { | |
3143 | /* Avoid future lookups in this objfile. */ | |
3144 | bp_objfile_data->overlay_msym = &msym_not_found; | |
3145 | continue; | |
3146 | } | |
3147 | bp_objfile_data->overlay_msym = m; | |
3148 | } | |
e62c965a | 3149 | |
17450429 PP |
3150 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->overlay_msym); |
3151 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3152 | bp_overlay_event, |
3153 | &internal_breakpoint_ops); | |
69de3c6a | 3154 | b->addr_string = xstrdup (func_name); |
e62c965a | 3155 | |
69de3c6a PP |
3156 | if (overlay_debugging == ovly_auto) |
3157 | { | |
3158 | b->enable_state = bp_enabled; | |
3159 | overlay_events_enabled = 1; | |
3160 | } | |
3161 | else | |
3162 | { | |
3163 | b->enable_state = bp_disabled; | |
3164 | overlay_events_enabled = 0; | |
3165 | } | |
e62c965a PP |
3166 | } |
3167 | update_global_location_list (1); | |
3168 | } | |
3169 | ||
0fd8e87f | 3170 | static void |
af02033e | 3171 | create_longjmp_master_breakpoint (void) |
0fd8e87f | 3172 | { |
6c95b8df | 3173 | struct program_space *pspace; |
6c95b8df PA |
3174 | struct cleanup *old_chain; |
3175 | ||
3176 | old_chain = save_current_program_space (); | |
0fd8e87f | 3177 | |
6c95b8df | 3178 | ALL_PSPACES (pspace) |
af02033e PP |
3179 | { |
3180 | struct objfile *objfile; | |
3181 | ||
3182 | set_current_program_space (pspace); | |
3183 | ||
3184 | ALL_OBJFILES (objfile) | |
0fd8e87f | 3185 | { |
af02033e PP |
3186 | int i; |
3187 | struct gdbarch *gdbarch; | |
17450429 | 3188 | struct breakpoint_objfile_data *bp_objfile_data; |
0fd8e87f | 3189 | |
af02033e PP |
3190 | gdbarch = get_objfile_arch (objfile); |
3191 | if (!gdbarch_get_longjmp_target_p (gdbarch)) | |
0fd8e87f UW |
3192 | continue; |
3193 | ||
17450429 PP |
3194 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
3195 | ||
28106bc2 SDJ |
3196 | if (!bp_objfile_data->longjmp_searched) |
3197 | { | |
3198 | bp_objfile_data->longjmp_probes | |
3199 | = find_probes_in_objfile (objfile, "libc", "longjmp"); | |
3200 | bp_objfile_data->longjmp_searched = 1; | |
3201 | } | |
3202 | ||
3203 | if (bp_objfile_data->longjmp_probes != NULL) | |
3204 | { | |
3205 | int i; | |
3206 | struct probe *probe; | |
3207 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3208 | ||
3209 | for (i = 0; | |
3210 | VEC_iterate (probe_p, | |
3211 | bp_objfile_data->longjmp_probes, | |
3212 | i, probe); | |
3213 | ++i) | |
3214 | { | |
3215 | struct breakpoint *b; | |
3216 | ||
3217 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3218 | bp_longjmp_master, | |
3219 | &internal_breakpoint_ops); | |
3220 | b->addr_string = xstrdup ("-probe-stap libc:longjmp"); | |
3221 | b->enable_state = bp_disabled; | |
3222 | } | |
3223 | ||
3224 | continue; | |
3225 | } | |
3226 | ||
17450429 | 3227 | for (i = 0; i < NUM_LONGJMP_NAMES; i++) |
af02033e PP |
3228 | { |
3229 | struct breakpoint *b; | |
af02033e | 3230 | const char *func_name; |
17450429 | 3231 | CORE_ADDR addr; |
6c95b8df | 3232 | |
17450429 | 3233 | if (msym_not_found_p (bp_objfile_data->longjmp_msym[i])) |
af02033e | 3234 | continue; |
0fd8e87f | 3235 | |
17450429 PP |
3236 | func_name = longjmp_names[i]; |
3237 | if (bp_objfile_data->longjmp_msym[i] == NULL) | |
3238 | { | |
3239 | struct minimal_symbol *m; | |
3240 | ||
3241 | m = lookup_minimal_symbol_text (func_name, objfile); | |
3242 | if (m == NULL) | |
3243 | { | |
3244 | /* Prevent future lookups in this objfile. */ | |
3245 | bp_objfile_data->longjmp_msym[i] = &msym_not_found; | |
3246 | continue; | |
3247 | } | |
3248 | bp_objfile_data->longjmp_msym[i] = m; | |
3249 | } | |
3250 | ||
3251 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->longjmp_msym[i]); | |
06edf0c0 PA |
3252 | b = create_internal_breakpoint (gdbarch, addr, bp_longjmp_master, |
3253 | &internal_breakpoint_ops); | |
af02033e PP |
3254 | b->addr_string = xstrdup (func_name); |
3255 | b->enable_state = bp_disabled; | |
3256 | } | |
0fd8e87f | 3257 | } |
af02033e | 3258 | } |
0fd8e87f | 3259 | update_global_location_list (1); |
6c95b8df PA |
3260 | |
3261 | do_cleanups (old_chain); | |
0fd8e87f UW |
3262 | } |
3263 | ||
af02033e | 3264 | /* Create a master std::terminate breakpoint. */ |
aa7d318d | 3265 | static void |
af02033e | 3266 | create_std_terminate_master_breakpoint (void) |
aa7d318d TT |
3267 | { |
3268 | struct program_space *pspace; | |
aa7d318d | 3269 | struct cleanup *old_chain; |
af02033e | 3270 | const char *const func_name = "std::terminate()"; |
aa7d318d TT |
3271 | |
3272 | old_chain = save_current_program_space (); | |
3273 | ||
3274 | ALL_PSPACES (pspace) | |
17450429 PP |
3275 | { |
3276 | struct objfile *objfile; | |
3277 | CORE_ADDR addr; | |
3278 | ||
3279 | set_current_program_space (pspace); | |
3280 | ||
aa7d318d TT |
3281 | ALL_OBJFILES (objfile) |
3282 | { | |
3283 | struct breakpoint *b; | |
17450429 | 3284 | struct breakpoint_objfile_data *bp_objfile_data; |
aa7d318d | 3285 | |
17450429 | 3286 | bp_objfile_data = get_breakpoint_objfile_data (objfile); |
aa7d318d | 3287 | |
17450429 PP |
3288 | if (msym_not_found_p (bp_objfile_data->terminate_msym)) |
3289 | continue; | |
3290 | ||
3291 | if (bp_objfile_data->terminate_msym == NULL) | |
3292 | { | |
3293 | struct minimal_symbol *m; | |
3294 | ||
3295 | m = lookup_minimal_symbol (func_name, NULL, objfile); | |
3296 | if (m == NULL || (MSYMBOL_TYPE (m) != mst_text | |
3297 | && MSYMBOL_TYPE (m) != mst_file_text)) | |
3298 | { | |
3299 | /* Prevent future lookups in this objfile. */ | |
3300 | bp_objfile_data->terminate_msym = &msym_not_found; | |
3301 | continue; | |
3302 | } | |
3303 | bp_objfile_data->terminate_msym = m; | |
3304 | } | |
aa7d318d | 3305 | |
17450429 PP |
3306 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->terminate_msym); |
3307 | b = create_internal_breakpoint (get_objfile_arch (objfile), addr, | |
06edf0c0 PA |
3308 | bp_std_terminate_master, |
3309 | &internal_breakpoint_ops); | |
aa7d318d TT |
3310 | b->addr_string = xstrdup (func_name); |
3311 | b->enable_state = bp_disabled; | |
3312 | } | |
17450429 PP |
3313 | } |
3314 | ||
aa7d318d TT |
3315 | update_global_location_list (1); |
3316 | ||
3317 | do_cleanups (old_chain); | |
3318 | } | |
3319 | ||
186c406b TT |
3320 | /* Install a master breakpoint on the unwinder's debug hook. */ |
3321 | ||
70221824 | 3322 | static void |
186c406b TT |
3323 | create_exception_master_breakpoint (void) |
3324 | { | |
3325 | struct objfile *objfile; | |
17450429 | 3326 | const char *const func_name = "_Unwind_DebugHook"; |
186c406b TT |
3327 | |
3328 | ALL_OBJFILES (objfile) | |
3329 | { | |
17450429 PP |
3330 | struct breakpoint *b; |
3331 | struct gdbarch *gdbarch; | |
3332 | struct breakpoint_objfile_data *bp_objfile_data; | |
3333 | CORE_ADDR addr; | |
3334 | ||
3335 | bp_objfile_data = get_breakpoint_objfile_data (objfile); | |
3336 | ||
28106bc2 SDJ |
3337 | /* We prefer the SystemTap probe point if it exists. */ |
3338 | if (!bp_objfile_data->exception_searched) | |
3339 | { | |
3340 | bp_objfile_data->exception_probes | |
3341 | = find_probes_in_objfile (objfile, "libgcc", "unwind"); | |
3342 | bp_objfile_data->exception_searched = 1; | |
3343 | } | |
3344 | ||
3345 | if (bp_objfile_data->exception_probes != NULL) | |
3346 | { | |
3347 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3348 | int i; | |
3349 | struct probe *probe; | |
3350 | ||
3351 | for (i = 0; | |
3352 | VEC_iterate (probe_p, | |
3353 | bp_objfile_data->exception_probes, | |
3354 | i, probe); | |
3355 | ++i) | |
3356 | { | |
3357 | struct breakpoint *b; | |
3358 | ||
3359 | b = create_internal_breakpoint (gdbarch, probe->address, | |
3360 | bp_exception_master, | |
3361 | &internal_breakpoint_ops); | |
3362 | b->addr_string = xstrdup ("-probe-stap libgcc:unwind"); | |
3363 | b->enable_state = bp_disabled; | |
3364 | } | |
3365 | ||
3366 | continue; | |
3367 | } | |
3368 | ||
3369 | /* Otherwise, try the hook function. */ | |
3370 | ||
17450429 PP |
3371 | if (msym_not_found_p (bp_objfile_data->exception_msym)) |
3372 | continue; | |
3373 | ||
3374 | gdbarch = get_objfile_arch (objfile); | |
186c406b | 3375 | |
17450429 | 3376 | if (bp_objfile_data->exception_msym == NULL) |
186c406b | 3377 | { |
17450429 | 3378 | struct minimal_symbol *debug_hook; |
186c406b | 3379 | |
17450429 PP |
3380 | debug_hook = lookup_minimal_symbol (func_name, NULL, objfile); |
3381 | if (debug_hook == NULL) | |
3382 | { | |
3383 | bp_objfile_data->exception_msym = &msym_not_found; | |
3384 | continue; | |
3385 | } | |
3386 | ||
3387 | bp_objfile_data->exception_msym = debug_hook; | |
186c406b | 3388 | } |
17450429 PP |
3389 | |
3390 | addr = SYMBOL_VALUE_ADDRESS (bp_objfile_data->exception_msym); | |
3391 | addr = gdbarch_convert_from_func_ptr_addr (gdbarch, addr, | |
3392 | ¤t_target); | |
06edf0c0 PA |
3393 | b = create_internal_breakpoint (gdbarch, addr, bp_exception_master, |
3394 | &internal_breakpoint_ops); | |
17450429 PP |
3395 | b->addr_string = xstrdup (func_name); |
3396 | b->enable_state = bp_disabled; | |
186c406b TT |
3397 | } |
3398 | ||
3399 | update_global_location_list (1); | |
3400 | } | |
3401 | ||
c906108c | 3402 | void |
fba45db2 | 3403 | update_breakpoints_after_exec (void) |
c906108c | 3404 | { |
35df4500 | 3405 | struct breakpoint *b, *b_tmp; |
876fa593 | 3406 | struct bp_location *bploc, **bplocp_tmp; |
c906108c | 3407 | |
25b22b0a PA |
3408 | /* We're about to delete breakpoints from GDB's lists. If the |
3409 | INSERTED flag is true, GDB will try to lift the breakpoints by | |
3410 | writing the breakpoints' "shadow contents" back into memory. The | |
3411 | "shadow contents" are NOT valid after an exec, so GDB should not | |
3412 | do that. Instead, the target is responsible from marking | |
3413 | breakpoints out as soon as it detects an exec. We don't do that | |
3414 | here instead, because there may be other attempts to delete | |
3415 | breakpoints after detecting an exec and before reaching here. */ | |
876fa593 | 3416 | ALL_BP_LOCATIONS (bploc, bplocp_tmp) |
6c95b8df PA |
3417 | if (bploc->pspace == current_program_space) |
3418 | gdb_assert (!bploc->inserted); | |
c906108c | 3419 | |
35df4500 | 3420 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3421 | { |
6c95b8df PA |
3422 | if (b->pspace != current_program_space) |
3423 | continue; | |
3424 | ||
4a64f543 | 3425 | /* Solib breakpoints must be explicitly reset after an exec(). */ |
c5aa993b JM |
3426 | if (b->type == bp_shlib_event) |
3427 | { | |
3428 | delete_breakpoint (b); | |
3429 | continue; | |
3430 | } | |
c906108c | 3431 | |
4a64f543 | 3432 | /* JIT breakpoints must be explicitly reset after an exec(). */ |
4efc6507 DE |
3433 | if (b->type == bp_jit_event) |
3434 | { | |
3435 | delete_breakpoint (b); | |
3436 | continue; | |
3437 | } | |
3438 | ||
1900040c | 3439 | /* Thread event breakpoints must be set anew after an exec(), |
0fd8e87f UW |
3440 | as must overlay event and longjmp master breakpoints. */ |
3441 | if (b->type == bp_thread_event || b->type == bp_overlay_event | |
186c406b TT |
3442 | || b->type == bp_longjmp_master || b->type == bp_std_terminate_master |
3443 | || b->type == bp_exception_master) | |
c4093a6a JM |
3444 | { |
3445 | delete_breakpoint (b); | |
3446 | continue; | |
3447 | } | |
3448 | ||
4a64f543 | 3449 | /* Step-resume breakpoints are meaningless after an exec(). */ |
2c03e5be | 3450 | if (b->type == bp_step_resume || b->type == bp_hp_step_resume) |
c5aa993b JM |
3451 | { |
3452 | delete_breakpoint (b); | |
3453 | continue; | |
3454 | } | |
3455 | ||
611c83ae PA |
3456 | /* Longjmp and longjmp-resume breakpoints are also meaningless |
3457 | after an exec. */ | |
186c406b | 3458 | if (b->type == bp_longjmp || b->type == bp_longjmp_resume |
e2e4d78b | 3459 | || b->type == bp_longjmp_call_dummy |
186c406b | 3460 | || b->type == bp_exception || b->type == bp_exception_resume) |
611c83ae PA |
3461 | { |
3462 | delete_breakpoint (b); | |
3463 | continue; | |
3464 | } | |
3465 | ||
ce78b96d JB |
3466 | if (b->type == bp_catchpoint) |
3467 | { | |
3468 | /* For now, none of the bp_catchpoint breakpoints need to | |
3469 | do anything at this point. In the future, if some of | |
3470 | the catchpoints need to something, we will need to add | |
3471 | a new method, and call this method from here. */ | |
3472 | continue; | |
3473 | } | |
3474 | ||
c5aa993b JM |
3475 | /* bp_finish is a special case. The only way we ought to be able |
3476 | to see one of these when an exec() has happened, is if the user | |
3477 | caught a vfork, and then said "finish". Ordinarily a finish just | |
3478 | carries them to the call-site of the current callee, by setting | |
3479 | a temporary bp there and resuming. But in this case, the finish | |
3480 | will carry them entirely through the vfork & exec. | |
3481 | ||
3482 | We don't want to allow a bp_finish to remain inserted now. But | |
3483 | we can't safely delete it, 'cause finish_command has a handle to | |
3484 | the bp on a bpstat, and will later want to delete it. There's a | |
3485 | chance (and I've seen it happen) that if we delete the bp_finish | |
3486 | here, that its storage will get reused by the time finish_command | |
3487 | gets 'round to deleting the "use to be a bp_finish" breakpoint. | |
3488 | We really must allow finish_command to delete a bp_finish. | |
3489 | ||
e5dd4106 | 3490 | In the absence of a general solution for the "how do we know |
53a5351d JM |
3491 | it's safe to delete something others may have handles to?" |
3492 | problem, what we'll do here is just uninsert the bp_finish, and | |
3493 | let finish_command delete it. | |
3494 | ||
3495 | (We know the bp_finish is "doomed" in the sense that it's | |
3496 | momentary, and will be deleted as soon as finish_command sees | |
3497 | the inferior stopped. So it doesn't matter that the bp's | |
3498 | address is probably bogus in the new a.out, unlike e.g., the | |
3499 | solib breakpoints.) */ | |
c5aa993b | 3500 | |
c5aa993b JM |
3501 | if (b->type == bp_finish) |
3502 | { | |
3503 | continue; | |
3504 | } | |
3505 | ||
3506 | /* Without a symbolic address, we have little hope of the | |
3507 | pre-exec() address meaning the same thing in the post-exec() | |
4a64f543 | 3508 | a.out. */ |
c5aa993b JM |
3509 | if (b->addr_string == NULL) |
3510 | { | |
3511 | delete_breakpoint (b); | |
3512 | continue; | |
3513 | } | |
c5aa993b | 3514 | } |
1900040c | 3515 | /* FIXME what about longjmp breakpoints? Re-create them here? */ |
af02033e PP |
3516 | create_overlay_event_breakpoint (); |
3517 | create_longjmp_master_breakpoint (); | |
3518 | create_std_terminate_master_breakpoint (); | |
186c406b | 3519 | create_exception_master_breakpoint (); |
c906108c SS |
3520 | } |
3521 | ||
3522 | int | |
d80ee84f | 3523 | detach_breakpoints (ptid_t ptid) |
c906108c | 3524 | { |
35df4500 | 3525 | struct bp_location *bl, **blp_tmp; |
3a1bae8e | 3526 | int val = 0; |
ce696e05 | 3527 | struct cleanup *old_chain = save_inferior_ptid (); |
6c95b8df | 3528 | struct inferior *inf = current_inferior (); |
c5aa993b | 3529 | |
d80ee84f | 3530 | if (PIDGET (ptid) == PIDGET (inferior_ptid)) |
8a3fe4f8 | 3531 | error (_("Cannot detach breakpoints of inferior_ptid")); |
c5aa993b | 3532 | |
6c95b8df | 3533 | /* Set inferior_ptid; remove_breakpoint_1 uses this global. */ |
d80ee84f | 3534 | inferior_ptid = ptid; |
35df4500 | 3535 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3536 | { |
35df4500 | 3537 | if (bl->pspace != inf->pspace) |
6c95b8df PA |
3538 | continue; |
3539 | ||
bd9673a4 PW |
3540 | /* This function must physically remove breakpoints locations |
3541 | from the specified ptid, without modifying the breakpoint | |
3542 | package's state. Locations of type bp_loc_other are only | |
3543 | maintained at GDB side. So, there is no need to remove | |
3544 | these bp_loc_other locations. Moreover, removing these | |
3545 | would modify the breakpoint package's state. */ | |
3546 | if (bl->loc_type == bp_loc_other) | |
3547 | continue; | |
3548 | ||
35df4500 TJB |
3549 | if (bl->inserted) |
3550 | val |= remove_breakpoint_1 (bl, mark_inserted); | |
c5aa993b | 3551 | } |
d03285ec UW |
3552 | |
3553 | /* Detach single-step breakpoints as well. */ | |
3554 | detach_single_step_breakpoints (); | |
3555 | ||
ce696e05 | 3556 | do_cleanups (old_chain); |
3a1bae8e | 3557 | return val; |
c906108c SS |
3558 | } |
3559 | ||
35df4500 | 3560 | /* Remove the breakpoint location BL from the current address space. |
6c95b8df PA |
3561 | Note that this is used to detach breakpoints from a child fork. |
3562 | When we get here, the child isn't in the inferior list, and neither | |
3563 | do we have objects to represent its address space --- we should | |
35df4500 | 3564 | *not* look at bl->pspace->aspace here. */ |
6c95b8df | 3565 | |
c906108c | 3566 | static int |
35df4500 | 3567 | remove_breakpoint_1 (struct bp_location *bl, insertion_state_t is) |
c906108c SS |
3568 | { |
3569 | int val; | |
c5aa993b | 3570 | |
35df4500 TJB |
3571 | /* BL is never in moribund_locations by our callers. */ |
3572 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3573 | |
35df4500 | 3574 | if (bl->owner->enable_state == bp_permanent) |
c2c6d25f JM |
3575 | /* Permanent breakpoints cannot be inserted or removed. */ |
3576 | return 0; | |
3577 | ||
74960c60 VP |
3578 | /* The type of none suggests that owner is actually deleted. |
3579 | This should not ever happen. */ | |
35df4500 | 3580 | gdb_assert (bl->owner->type != bp_none); |
0bde7532 | 3581 | |
35df4500 TJB |
3582 | if (bl->loc_type == bp_loc_software_breakpoint |
3583 | || bl->loc_type == bp_loc_hardware_breakpoint) | |
c906108c | 3584 | { |
c02f5703 MS |
3585 | /* "Normal" instruction breakpoint: either the standard |
3586 | trap-instruction bp (bp_breakpoint), or a | |
3587 | bp_hardware_breakpoint. */ | |
3588 | ||
3589 | /* First check to see if we have to handle an overlay. */ | |
3590 | if (overlay_debugging == ovly_off | |
35df4500 TJB |
3591 | || bl->section == NULL |
3592 | || !(section_is_overlay (bl->section))) | |
c02f5703 MS |
3593 | { |
3594 | /* No overlay handling: just remove the breakpoint. */ | |
348d480f | 3595 | val = bl->owner->ops->remove_location (bl); |
c02f5703 | 3596 | } |
c906108c SS |
3597 | else |
3598 | { | |
4a64f543 | 3599 | /* This breakpoint is in an overlay section. |
c02f5703 MS |
3600 | Did we set a breakpoint at the LMA? */ |
3601 | if (!overlay_events_enabled) | |
3602 | { | |
3603 | /* Yes -- overlay event support is not active, so we | |
3604 | should have set a breakpoint at the LMA. Remove it. | |
3605 | */ | |
c02f5703 MS |
3606 | /* Ignore any failures: if the LMA is in ROM, we will |
3607 | have already warned when we failed to insert it. */ | |
35df4500 TJB |
3608 | if (bl->loc_type == bp_loc_hardware_breakpoint) |
3609 | target_remove_hw_breakpoint (bl->gdbarch, | |
3610 | &bl->overlay_target_info); | |
c02f5703 | 3611 | else |
35df4500 TJB |
3612 | target_remove_breakpoint (bl->gdbarch, |
3613 | &bl->overlay_target_info); | |
c02f5703 MS |
3614 | } |
3615 | /* Did we set a breakpoint at the VMA? | |
3616 | If so, we will have marked the breakpoint 'inserted'. */ | |
35df4500 | 3617 | if (bl->inserted) |
c906108c | 3618 | { |
c02f5703 MS |
3619 | /* Yes -- remove it. Previously we did not bother to |
3620 | remove the breakpoint if the section had been | |
3621 | unmapped, but let's not rely on that being safe. We | |
3622 | don't know what the overlay manager might do. */ | |
aa67235e UW |
3623 | |
3624 | /* However, we should remove *software* breakpoints only | |
3625 | if the section is still mapped, or else we overwrite | |
3626 | wrong code with the saved shadow contents. */ | |
348d480f PA |
3627 | if (bl->loc_type == bp_loc_hardware_breakpoint |
3628 | || section_is_mapped (bl->section)) | |
3629 | val = bl->owner->ops->remove_location (bl); | |
aa67235e UW |
3630 | else |
3631 | val = 0; | |
c906108c | 3632 | } |
c02f5703 MS |
3633 | else |
3634 | { | |
3635 | /* No -- not inserted, so no need to remove. No error. */ | |
3636 | val = 0; | |
3637 | } | |
c906108c | 3638 | } |
879d1e6b UW |
3639 | |
3640 | /* In some cases, we might not be able to remove a breakpoint | |
3641 | in a shared library that has already been removed, but we | |
3642 | have not yet processed the shlib unload event. */ | |
35df4500 | 3643 | if (val && solib_name_from_address (bl->pspace, bl->address)) |
879d1e6b UW |
3644 | val = 0; |
3645 | ||
c906108c SS |
3646 | if (val) |
3647 | return val; | |
35df4500 | 3648 | bl->inserted = (is == mark_inserted); |
c906108c | 3649 | } |
35df4500 | 3650 | else if (bl->loc_type == bp_loc_hardware_watchpoint) |
c906108c | 3651 | { |
77b06cd7 TJB |
3652 | gdb_assert (bl->owner->ops != NULL |
3653 | && bl->owner->ops->remove_location != NULL); | |
3654 | ||
35df4500 | 3655 | bl->inserted = (is == mark_inserted); |
77b06cd7 | 3656 | bl->owner->ops->remove_location (bl); |
2e70b7b9 | 3657 | |
c906108c | 3658 | /* Failure to remove any of the hardware watchpoints comes here. */ |
35df4500 | 3659 | if ((is == mark_uninserted) && (bl->inserted)) |
8a3fe4f8 | 3660 | warning (_("Could not remove hardware watchpoint %d."), |
35df4500 | 3661 | bl->owner->number); |
c906108c | 3662 | } |
35df4500 TJB |
3663 | else if (bl->owner->type == bp_catchpoint |
3664 | && breakpoint_enabled (bl->owner) | |
3665 | && !bl->duplicate) | |
ce78b96d | 3666 | { |
77b06cd7 TJB |
3667 | gdb_assert (bl->owner->ops != NULL |
3668 | && bl->owner->ops->remove_location != NULL); | |
ce78b96d | 3669 | |
77b06cd7 | 3670 | val = bl->owner->ops->remove_location (bl); |
ce78b96d JB |
3671 | if (val) |
3672 | return val; | |
77b06cd7 | 3673 | |
35df4500 | 3674 | bl->inserted = (is == mark_inserted); |
ce78b96d | 3675 | } |
c906108c SS |
3676 | |
3677 | return 0; | |
3678 | } | |
3679 | ||
6c95b8df | 3680 | static int |
35df4500 | 3681 | remove_breakpoint (struct bp_location *bl, insertion_state_t is) |
6c95b8df PA |
3682 | { |
3683 | int ret; | |
3684 | struct cleanup *old_chain; | |
3685 | ||
35df4500 TJB |
3686 | /* BL is never in moribund_locations by our callers. */ |
3687 | gdb_assert (bl->owner != NULL); | |
2bdf28a0 | 3688 | |
35df4500 | 3689 | if (bl->owner->enable_state == bp_permanent) |
6c95b8df PA |
3690 | /* Permanent breakpoints cannot be inserted or removed. */ |
3691 | return 0; | |
3692 | ||
3693 | /* The type of none suggests that owner is actually deleted. | |
3694 | This should not ever happen. */ | |
35df4500 | 3695 | gdb_assert (bl->owner->type != bp_none); |
6c95b8df PA |
3696 | |
3697 | old_chain = save_current_space_and_thread (); | |
3698 | ||
35df4500 | 3699 | switch_to_program_space_and_thread (bl->pspace); |
6c95b8df | 3700 | |
35df4500 | 3701 | ret = remove_breakpoint_1 (bl, is); |
6c95b8df PA |
3702 | |
3703 | do_cleanups (old_chain); | |
3704 | return ret; | |
3705 | } | |
3706 | ||
c906108c SS |
3707 | /* Clear the "inserted" flag in all breakpoints. */ |
3708 | ||
25b22b0a | 3709 | void |
fba45db2 | 3710 | mark_breakpoints_out (void) |
c906108c | 3711 | { |
35df4500 | 3712 | struct bp_location *bl, **blp_tmp; |
c906108c | 3713 | |
35df4500 TJB |
3714 | ALL_BP_LOCATIONS (bl, blp_tmp) |
3715 | if (bl->pspace == current_program_space) | |
3716 | bl->inserted = 0; | |
c906108c SS |
3717 | } |
3718 | ||
53a5351d JM |
3719 | /* Clear the "inserted" flag in all breakpoints and delete any |
3720 | breakpoints which should go away between runs of the program. | |
c906108c SS |
3721 | |
3722 | Plus other such housekeeping that has to be done for breakpoints | |
3723 | between runs. | |
3724 | ||
53a5351d JM |
3725 | Note: this function gets called at the end of a run (by |
3726 | generic_mourn_inferior) and when a run begins (by | |
4a64f543 | 3727 | init_wait_for_inferior). */ |
c906108c SS |
3728 | |
3729 | ||
3730 | ||
3731 | void | |
fba45db2 | 3732 | breakpoint_init_inferior (enum inf_context context) |
c906108c | 3733 | { |
35df4500 TJB |
3734 | struct breakpoint *b, *b_tmp; |
3735 | struct bp_location *bl, **blp_tmp; | |
1c5cfe86 | 3736 | int ix; |
6c95b8df | 3737 | struct program_space *pspace = current_program_space; |
c906108c | 3738 | |
50c71eaf PA |
3739 | /* If breakpoint locations are shared across processes, then there's |
3740 | nothing to do. */ | |
f5656ead | 3741 | if (gdbarch_has_global_breakpoints (target_gdbarch ())) |
50c71eaf PA |
3742 | return; |
3743 | ||
35df4500 | 3744 | ALL_BP_LOCATIONS (bl, blp_tmp) |
6c95b8df | 3745 | { |
35df4500 TJB |
3746 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
3747 | if (bl->pspace == pspace | |
3748 | && bl->owner->enable_state != bp_permanent) | |
3749 | bl->inserted = 0; | |
6c95b8df | 3750 | } |
075f6582 | 3751 | |
35df4500 | 3752 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 3753 | { |
6c95b8df PA |
3754 | if (b->loc && b->loc->pspace != pspace) |
3755 | continue; | |
3756 | ||
c5aa993b JM |
3757 | switch (b->type) |
3758 | { | |
3759 | case bp_call_dummy: | |
e2e4d78b | 3760 | case bp_longjmp_call_dummy: |
c906108c | 3761 | |
c5aa993b | 3762 | /* If the call dummy breakpoint is at the entry point it will |
ab92d69b PA |
3763 | cause problems when the inferior is rerun, so we better get |
3764 | rid of it. */ | |
3765 | ||
3766 | case bp_watchpoint_scope: | |
3767 | ||
3768 | /* Also get rid of scope breakpoints. */ | |
3769 | ||
3770 | case bp_shlib_event: | |
3771 | ||
3772 | /* Also remove solib event breakpoints. Their addresses may | |
3773 | have changed since the last time we ran the program. | |
3774 | Actually we may now be debugging against different target; | |
3775 | and so the solib backend that installed this breakpoint may | |
3776 | not be used in by the target. E.g., | |
3777 | ||
3778 | (gdb) file prog-linux | |
3779 | (gdb) run # native linux target | |
3780 | ... | |
3781 | (gdb) kill | |
3782 | (gdb) file prog-win.exe | |
3783 | (gdb) tar rem :9999 # remote Windows gdbserver. | |
3784 | */ | |
c906108c | 3785 | |
f59f708a PA |
3786 | case bp_step_resume: |
3787 | ||
3788 | /* Also remove step-resume breakpoints. */ | |
3789 | ||
c5aa993b JM |
3790 | delete_breakpoint (b); |
3791 | break; | |
c906108c | 3792 | |
c5aa993b JM |
3793 | case bp_watchpoint: |
3794 | case bp_hardware_watchpoint: | |
3795 | case bp_read_watchpoint: | |
3796 | case bp_access_watchpoint: | |
3a5c3e22 PA |
3797 | { |
3798 | struct watchpoint *w = (struct watchpoint *) b; | |
c906108c | 3799 | |
3a5c3e22 PA |
3800 | /* Likewise for watchpoints on local expressions. */ |
3801 | if (w->exp_valid_block != NULL) | |
3802 | delete_breakpoint (b); | |
3803 | else if (context == inf_starting) | |
3804 | { | |
3805 | /* Reset val field to force reread of starting value in | |
3806 | insert_breakpoints. */ | |
3807 | if (w->val) | |
3808 | value_free (w->val); | |
3809 | w->val = NULL; | |
3810 | w->val_valid = 0; | |
c860120c | 3811 | } |
3a5c3e22 | 3812 | } |
c5aa993b JM |
3813 | break; |
3814 | default: | |
c5aa993b JM |
3815 | break; |
3816 | } | |
3817 | } | |
1c5cfe86 PA |
3818 | |
3819 | /* Get rid of the moribund locations. */ | |
35df4500 TJB |
3820 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, bl); ++ix) |
3821 | decref_bp_location (&bl); | |
1c5cfe86 | 3822 | VEC_free (bp_location_p, moribund_locations); |
c906108c SS |
3823 | } |
3824 | ||
6c95b8df PA |
3825 | /* These functions concern about actual breakpoints inserted in the |
3826 | target --- to e.g. check if we need to do decr_pc adjustment or if | |
3827 | we need to hop over the bkpt --- so we check for address space | |
3828 | match, not program space. */ | |
3829 | ||
c2c6d25f JM |
3830 | /* breakpoint_here_p (PC) returns non-zero if an enabled breakpoint |
3831 | exists at PC. It returns ordinary_breakpoint_here if it's an | |
3832 | ordinary breakpoint, or permanent_breakpoint_here if it's a | |
3833 | permanent breakpoint. | |
3834 | - When continuing from a location with an ordinary breakpoint, we | |
3835 | actually single step once before calling insert_breakpoints. | |
e5dd4106 | 3836 | - When continuing from a location with a permanent breakpoint, we |
c2c6d25f JM |
3837 | need to use the `SKIP_PERMANENT_BREAKPOINT' macro, provided by |
3838 | the target, to advance the PC past the breakpoint. */ | |
c906108c | 3839 | |
c2c6d25f | 3840 | enum breakpoint_here |
6c95b8df | 3841 | breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
c906108c | 3842 | { |
35df4500 | 3843 | struct bp_location *bl, **blp_tmp; |
c2c6d25f | 3844 | int any_breakpoint_here = 0; |
c906108c | 3845 | |
35df4500 | 3846 | ALL_BP_LOCATIONS (bl, blp_tmp) |
075f6582 | 3847 | { |
35df4500 TJB |
3848 | if (bl->loc_type != bp_loc_software_breakpoint |
3849 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3850 | continue; |
3851 | ||
f1310107 | 3852 | /* ALL_BP_LOCATIONS bp_location has BL->OWNER always non-NULL. */ |
35df4500 TJB |
3853 | if ((breakpoint_enabled (bl->owner) |
3854 | || bl->owner->enable_state == bp_permanent) | |
f1310107 | 3855 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3856 | { |
3857 | if (overlay_debugging | |
35df4500 TJB |
3858 | && section_is_overlay (bl->section) |
3859 | && !section_is_mapped (bl->section)) | |
075f6582 | 3860 | continue; /* unmapped overlay -- can't be a match */ |
35df4500 | 3861 | else if (bl->owner->enable_state == bp_permanent) |
075f6582 DJ |
3862 | return permanent_breakpoint_here; |
3863 | else | |
3864 | any_breakpoint_here = 1; | |
3865 | } | |
3866 | } | |
c906108c | 3867 | |
c2c6d25f | 3868 | return any_breakpoint_here ? ordinary_breakpoint_here : 0; |
c906108c SS |
3869 | } |
3870 | ||
1c5cfe86 PA |
3871 | /* Return true if there's a moribund breakpoint at PC. */ |
3872 | ||
3873 | int | |
6c95b8df | 3874 | moribund_breakpoint_here_p (struct address_space *aspace, CORE_ADDR pc) |
1c5cfe86 PA |
3875 | { |
3876 | struct bp_location *loc; | |
3877 | int ix; | |
3878 | ||
3879 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
f1310107 | 3880 | if (breakpoint_location_address_match (loc, aspace, pc)) |
1c5cfe86 PA |
3881 | return 1; |
3882 | ||
3883 | return 0; | |
3884 | } | |
c2c6d25f | 3885 | |
c36b740a | 3886 | /* Returns non-zero if there's a breakpoint inserted at PC, which is |
4a64f543 MS |
3887 | inserted using regular breakpoint_chain / bp_location array |
3888 | mechanism. This does not check for single-step breakpoints, which | |
3889 | are inserted and removed using direct target manipulation. */ | |
c906108c SS |
3890 | |
3891 | int | |
4a64f543 MS |
3892 | regular_breakpoint_inserted_here_p (struct address_space *aspace, |
3893 | CORE_ADDR pc) | |
c906108c | 3894 | { |
35df4500 | 3895 | struct bp_location *bl, **blp_tmp; |
c906108c | 3896 | |
35df4500 | 3897 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 3898 | { |
35df4500 TJB |
3899 | if (bl->loc_type != bp_loc_software_breakpoint |
3900 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
3901 | continue; |
3902 | ||
35df4500 | 3903 | if (bl->inserted |
f1310107 | 3904 | && breakpoint_location_address_match (bl, aspace, pc)) |
075f6582 DJ |
3905 | { |
3906 | if (overlay_debugging | |
35df4500 TJB |
3907 | && section_is_overlay (bl->section) |
3908 | && !section_is_mapped (bl->section)) | |
075f6582 DJ |
3909 | continue; /* unmapped overlay -- can't be a match */ |
3910 | else | |
3911 | return 1; | |
3912 | } | |
c5aa993b | 3913 | } |
c36b740a VP |
3914 | return 0; |
3915 | } | |
3916 | ||
3917 | /* Returns non-zero iff there's either regular breakpoint | |
3918 | or a single step breakpoint inserted at PC. */ | |
3919 | ||
3920 | int | |
6c95b8df | 3921 | breakpoint_inserted_here_p (struct address_space *aspace, CORE_ADDR pc) |
c36b740a | 3922 | { |
6c95b8df | 3923 | if (regular_breakpoint_inserted_here_p (aspace, pc)) |
c36b740a | 3924 | return 1; |
c906108c | 3925 | |
6c95b8df | 3926 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3927 | return 1; |
3928 | ||
c906108c SS |
3929 | return 0; |
3930 | } | |
3931 | ||
4fa8626c DJ |
3932 | /* This function returns non-zero iff there is a software breakpoint |
3933 | inserted at PC. */ | |
3934 | ||
3935 | int | |
3e43a32a MS |
3936 | software_breakpoint_inserted_here_p (struct address_space *aspace, |
3937 | CORE_ADDR pc) | |
4fa8626c | 3938 | { |
35df4500 | 3939 | struct bp_location *bl, **blp_tmp; |
4fa8626c | 3940 | |
35df4500 | 3941 | ALL_BP_LOCATIONS (bl, blp_tmp) |
4fa8626c | 3942 | { |
35df4500 | 3943 | if (bl->loc_type != bp_loc_software_breakpoint) |
4fa8626c DJ |
3944 | continue; |
3945 | ||
35df4500 TJB |
3946 | if (bl->inserted |
3947 | && breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6c95b8df | 3948 | aspace, pc)) |
4fa8626c DJ |
3949 | { |
3950 | if (overlay_debugging | |
35df4500 TJB |
3951 | && section_is_overlay (bl->section) |
3952 | && !section_is_mapped (bl->section)) | |
4fa8626c DJ |
3953 | continue; /* unmapped overlay -- can't be a match */ |
3954 | else | |
3955 | return 1; | |
3956 | } | |
3957 | } | |
3958 | ||
1aafd4da | 3959 | /* Also check for software single-step breakpoints. */ |
6c95b8df | 3960 | if (single_step_breakpoint_inserted_here_p (aspace, pc)) |
1aafd4da UW |
3961 | return 1; |
3962 | ||
4fa8626c DJ |
3963 | return 0; |
3964 | } | |
3965 | ||
9093389c PA |
3966 | int |
3967 | hardware_watchpoint_inserted_in_range (struct address_space *aspace, | |
3968 | CORE_ADDR addr, ULONGEST len) | |
3969 | { | |
3970 | struct breakpoint *bpt; | |
3971 | ||
3972 | ALL_BREAKPOINTS (bpt) | |
3973 | { | |
3974 | struct bp_location *loc; | |
3975 | ||
3976 | if (bpt->type != bp_hardware_watchpoint | |
3977 | && bpt->type != bp_access_watchpoint) | |
3978 | continue; | |
3979 | ||
3980 | if (!breakpoint_enabled (bpt)) | |
3981 | continue; | |
3982 | ||
3983 | for (loc = bpt->loc; loc; loc = loc->next) | |
3984 | if (loc->pspace->aspace == aspace && loc->inserted) | |
3985 | { | |
3986 | CORE_ADDR l, h; | |
3987 | ||
3988 | /* Check for intersection. */ | |
3989 | l = max (loc->address, addr); | |
3990 | h = min (loc->address + loc->length, addr + len); | |
3991 | if (l < h) | |
3992 | return 1; | |
3993 | } | |
3994 | } | |
3995 | return 0; | |
3996 | } | |
3997 | ||
075f6582 DJ |
3998 | /* breakpoint_thread_match (PC, PTID) returns true if the breakpoint at |
3999 | PC is valid for process/thread PTID. */ | |
c906108c SS |
4000 | |
4001 | int | |
6c95b8df PA |
4002 | breakpoint_thread_match (struct address_space *aspace, CORE_ADDR pc, |
4003 | ptid_t ptid) | |
c906108c | 4004 | { |
35df4500 | 4005 | struct bp_location *bl, **blp_tmp; |
4a306c9a | 4006 | /* The thread and task IDs associated to PTID, computed lazily. */ |
a6f1cd96 | 4007 | int thread = -1; |
4a306c9a | 4008 | int task = 0; |
a6f1cd96 | 4009 | |
35df4500 | 4010 | ALL_BP_LOCATIONS (bl, blp_tmp) |
c5aa993b | 4011 | { |
35df4500 TJB |
4012 | if (bl->loc_type != bp_loc_software_breakpoint |
4013 | && bl->loc_type != bp_loc_hardware_breakpoint) | |
075f6582 DJ |
4014 | continue; |
4015 | ||
35df4500 TJB |
4016 | /* ALL_BP_LOCATIONS bp_location has bl->OWNER always non-NULL. */ |
4017 | if (!breakpoint_enabled (bl->owner) | |
4018 | && bl->owner->enable_state != bp_permanent) | |
a6f1cd96 JB |
4019 | continue; |
4020 | ||
f1310107 | 4021 | if (!breakpoint_location_address_match (bl, aspace, pc)) |
a6f1cd96 JB |
4022 | continue; |
4023 | ||
35df4500 | 4024 | if (bl->owner->thread != -1) |
075f6582 | 4025 | { |
a6f1cd96 JB |
4026 | /* This is a thread-specific breakpoint. Check that ptid |
4027 | matches that thread. If thread hasn't been computed yet, | |
4028 | it is now time to do so. */ | |
4029 | if (thread == -1) | |
4030 | thread = pid_to_thread_id (ptid); | |
35df4500 | 4031 | if (bl->owner->thread != thread) |
a6f1cd96 | 4032 | continue; |
075f6582 | 4033 | } |
a6f1cd96 | 4034 | |
35df4500 | 4035 | if (bl->owner->task != 0) |
4a306c9a JB |
4036 | { |
4037 | /* This is a task-specific breakpoint. Check that ptid | |
4038 | matches that task. If task hasn't been computed yet, | |
4039 | it is now time to do so. */ | |
4040 | if (task == 0) | |
4041 | task = ada_get_task_number (ptid); | |
35df4500 | 4042 | if (bl->owner->task != task) |
4a306c9a JB |
4043 | continue; |
4044 | } | |
4045 | ||
a6f1cd96 | 4046 | if (overlay_debugging |
35df4500 TJB |
4047 | && section_is_overlay (bl->section) |
4048 | && !section_is_mapped (bl->section)) | |
a6f1cd96 JB |
4049 | continue; /* unmapped overlay -- can't be a match */ |
4050 | ||
4051 | return 1; | |
c5aa993b | 4052 | } |
c906108c SS |
4053 | |
4054 | return 0; | |
4055 | } | |
c906108c | 4056 | \f |
c5aa993b | 4057 | |
c906108c SS |
4058 | /* bpstat stuff. External routines' interfaces are documented |
4059 | in breakpoint.h. */ | |
4060 | ||
4061 | int | |
c326b90e | 4062 | is_catchpoint (struct breakpoint *ep) |
c906108c | 4063 | { |
533be4dd | 4064 | return (ep->type == bp_catchpoint); |
c906108c SS |
4065 | } |
4066 | ||
f431efe5 PA |
4067 | /* Frees any storage that is part of a bpstat. Does not walk the |
4068 | 'next' chain. */ | |
4069 | ||
4070 | static void | |
198757a8 VP |
4071 | bpstat_free (bpstat bs) |
4072 | { | |
4073 | if (bs->old_val != NULL) | |
4074 | value_free (bs->old_val); | |
9add0f1b | 4075 | decref_counted_command_line (&bs->commands); |
f431efe5 | 4076 | decref_bp_location (&bs->bp_location_at); |
198757a8 VP |
4077 | xfree (bs); |
4078 | } | |
4079 | ||
c906108c SS |
4080 | /* Clear a bpstat so that it says we are not at any breakpoint. |
4081 | Also free any storage that is part of a bpstat. */ | |
4082 | ||
4083 | void | |
fba45db2 | 4084 | bpstat_clear (bpstat *bsp) |
c906108c SS |
4085 | { |
4086 | bpstat p; | |
4087 | bpstat q; | |
4088 | ||
4089 | if (bsp == 0) | |
4090 | return; | |
4091 | p = *bsp; | |
4092 | while (p != NULL) | |
4093 | { | |
4094 | q = p->next; | |
198757a8 | 4095 | bpstat_free (p); |
c906108c SS |
4096 | p = q; |
4097 | } | |
4098 | *bsp = NULL; | |
4099 | } | |
4100 | ||
4101 | /* Return a copy of a bpstat. Like "bs1 = bs2" but all storage that | |
4102 | is part of the bpstat is copied as well. */ | |
4103 | ||
4104 | bpstat | |
fba45db2 | 4105 | bpstat_copy (bpstat bs) |
c906108c SS |
4106 | { |
4107 | bpstat p = NULL; | |
4108 | bpstat tmp; | |
4109 | bpstat retval = NULL; | |
4110 | ||
4111 | if (bs == NULL) | |
4112 | return bs; | |
4113 | ||
4114 | for (; bs != NULL; bs = bs->next) | |
4115 | { | |
4116 | tmp = (bpstat) xmalloc (sizeof (*tmp)); | |
4117 | memcpy (tmp, bs, sizeof (*tmp)); | |
9add0f1b | 4118 | incref_counted_command_line (tmp->commands); |
f431efe5 | 4119 | incref_bp_location (tmp->bp_location_at); |
31cc81e9 | 4120 | if (bs->old_val != NULL) |
3c3185ac JK |
4121 | { |
4122 | tmp->old_val = value_copy (bs->old_val); | |
4123 | release_value (tmp->old_val); | |
4124 | } | |
31cc81e9 | 4125 | |
c906108c SS |
4126 | if (p == NULL) |
4127 | /* This is the first thing in the chain. */ | |
4128 | retval = tmp; | |
4129 | else | |
4130 | p->next = tmp; | |
4131 | p = tmp; | |
4132 | } | |
4133 | p->next = NULL; | |
4134 | return retval; | |
4135 | } | |
4136 | ||
4a64f543 | 4137 | /* Find the bpstat associated with this breakpoint. */ |
c906108c SS |
4138 | |
4139 | bpstat | |
fba45db2 | 4140 | bpstat_find_breakpoint (bpstat bsp, struct breakpoint *breakpoint) |
c906108c | 4141 | { |
c5aa993b JM |
4142 | if (bsp == NULL) |
4143 | return NULL; | |
c906108c | 4144 | |
c5aa993b JM |
4145 | for (; bsp != NULL; bsp = bsp->next) |
4146 | { | |
f431efe5 | 4147 | if (bsp->breakpoint_at == breakpoint) |
c5aa993b JM |
4148 | return bsp; |
4149 | } | |
c906108c SS |
4150 | return NULL; |
4151 | } | |
4152 | ||
ab04a2af TT |
4153 | /* See breakpoint.h. */ |
4154 | ||
4155 | enum bpstat_signal_value | |
427cd150 | 4156 | bpstat_explains_signal (bpstat bsp, enum gdb_signal sig) |
ab04a2af TT |
4157 | { |
4158 | enum bpstat_signal_value result = BPSTAT_SIGNAL_NO; | |
4159 | ||
4160 | for (; bsp != NULL; bsp = bsp->next) | |
4161 | { | |
4162 | /* Ensure that, if we ever entered this loop, then we at least | |
4163 | return BPSTAT_SIGNAL_HIDE. */ | |
427cd150 | 4164 | enum bpstat_signal_value newval; |
ab04a2af | 4165 | |
427cd150 TT |
4166 | if (bsp->breakpoint_at == NULL) |
4167 | { | |
4168 | /* A moribund location can never explain a signal other than | |
4169 | GDB_SIGNAL_TRAP. */ | |
4170 | if (sig == GDB_SIGNAL_TRAP) | |
4171 | newval = BPSTAT_SIGNAL_HIDE; | |
4172 | else | |
4173 | newval = BPSTAT_SIGNAL_NO; | |
4174 | } | |
4175 | else | |
4176 | newval = bsp->breakpoint_at->ops->explains_signal (bsp->breakpoint_at, | |
4177 | sig); | |
ab04a2af TT |
4178 | |
4179 | if (newval > result) | |
4180 | result = newval; | |
4181 | } | |
4182 | ||
4183 | return result; | |
4184 | } | |
4185 | ||
4a64f543 MS |
4186 | /* Put in *NUM the breakpoint number of the first breakpoint we are |
4187 | stopped at. *BSP upon return is a bpstat which points to the | |
4188 | remaining breakpoints stopped at (but which is not guaranteed to be | |
4189 | good for anything but further calls to bpstat_num). | |
4190 | ||
8671a17b PA |
4191 | Return 0 if passed a bpstat which does not indicate any breakpoints. |
4192 | Return -1 if stopped at a breakpoint that has been deleted since | |
4193 | we set it. | |
4194 | Return 1 otherwise. */ | |
c906108c SS |
4195 | |
4196 | int | |
8671a17b | 4197 | bpstat_num (bpstat *bsp, int *num) |
c906108c SS |
4198 | { |
4199 | struct breakpoint *b; | |
4200 | ||
4201 | if ((*bsp) == NULL) | |
4202 | return 0; /* No more breakpoint values */ | |
8671a17b | 4203 | |
4a64f543 MS |
4204 | /* We assume we'll never have several bpstats that correspond to a |
4205 | single breakpoint -- otherwise, this function might return the | |
4206 | same number more than once and this will look ugly. */ | |
f431efe5 | 4207 | b = (*bsp)->breakpoint_at; |
8671a17b PA |
4208 | *bsp = (*bsp)->next; |
4209 | if (b == NULL) | |
4210 | return -1; /* breakpoint that's been deleted since */ | |
4211 | ||
4212 | *num = b->number; /* We have its number */ | |
4213 | return 1; | |
c906108c SS |
4214 | } |
4215 | ||
e93ca019 | 4216 | /* See breakpoint.h. */ |
c906108c SS |
4217 | |
4218 | void | |
e93ca019 | 4219 | bpstat_clear_actions (void) |
c906108c | 4220 | { |
e93ca019 JK |
4221 | struct thread_info *tp; |
4222 | bpstat bs; | |
4223 | ||
4224 | if (ptid_equal (inferior_ptid, null_ptid)) | |
4225 | return; | |
4226 | ||
4227 | tp = find_thread_ptid (inferior_ptid); | |
4228 | if (tp == NULL) | |
4229 | return; | |
4230 | ||
4231 | for (bs = tp->control.stop_bpstat; bs != NULL; bs = bs->next) | |
c906108c | 4232 | { |
9add0f1b | 4233 | decref_counted_command_line (&bs->commands); |
abf85f46 | 4234 | |
c906108c SS |
4235 | if (bs->old_val != NULL) |
4236 | { | |
4237 | value_free (bs->old_val); | |
4238 | bs->old_val = NULL; | |
4239 | } | |
4240 | } | |
4241 | } | |
4242 | ||
f3b1572e PA |
4243 | /* Called when a command is about to proceed the inferior. */ |
4244 | ||
4245 | static void | |
4246 | breakpoint_about_to_proceed (void) | |
4247 | { | |
4248 | if (!ptid_equal (inferior_ptid, null_ptid)) | |
4249 | { | |
4250 | struct thread_info *tp = inferior_thread (); | |
4251 | ||
4252 | /* Allow inferior function calls in breakpoint commands to not | |
4253 | interrupt the command list. When the call finishes | |
4254 | successfully, the inferior will be standing at the same | |
4255 | breakpoint as if nothing happened. */ | |
16c381f0 | 4256 | if (tp->control.in_infcall) |
f3b1572e PA |
4257 | return; |
4258 | } | |
4259 | ||
4260 | breakpoint_proceeded = 1; | |
4261 | } | |
4262 | ||
4a64f543 MS |
4263 | /* Stub for cleaning up our state if we error-out of a breakpoint |
4264 | command. */ | |
c906108c | 4265 | static void |
4efb68b1 | 4266 | cleanup_executing_breakpoints (void *ignore) |
c906108c SS |
4267 | { |
4268 | executing_breakpoint_commands = 0; | |
4269 | } | |
4270 | ||
abf85f46 JK |
4271 | /* Return non-zero iff CMD as the first line of a command sequence is `silent' |
4272 | or its equivalent. */ | |
4273 | ||
4274 | static int | |
4275 | command_line_is_silent (struct command_line *cmd) | |
4276 | { | |
4277 | return cmd && (strcmp ("silent", cmd->line) == 0 | |
4278 | || (xdb_commands && strcmp ("Q", cmd->line) == 0)); | |
4279 | } | |
4280 | ||
4a64f543 MS |
4281 | /* Execute all the commands associated with all the breakpoints at |
4282 | this location. Any of these commands could cause the process to | |
4283 | proceed beyond this point, etc. We look out for such changes by | |
4284 | checking the global "breakpoint_proceeded" after each command. | |
c906108c | 4285 | |
347bddb7 PA |
4286 | Returns true if a breakpoint command resumed the inferior. In that |
4287 | case, it is the caller's responsibility to recall it again with the | |
4288 | bpstat of the current thread. */ | |
4289 | ||
4290 | static int | |
4291 | bpstat_do_actions_1 (bpstat *bsp) | |
c906108c SS |
4292 | { |
4293 | bpstat bs; | |
4294 | struct cleanup *old_chain; | |
347bddb7 | 4295 | int again = 0; |
c906108c SS |
4296 | |
4297 | /* Avoid endless recursion if a `source' command is contained | |
4298 | in bs->commands. */ | |
4299 | if (executing_breakpoint_commands) | |
347bddb7 | 4300 | return 0; |
c906108c SS |
4301 | |
4302 | executing_breakpoint_commands = 1; | |
4303 | old_chain = make_cleanup (cleanup_executing_breakpoints, 0); | |
4304 | ||
cf6c5ffb TT |
4305 | prevent_dont_repeat (); |
4306 | ||
4a64f543 | 4307 | /* This pointer will iterate over the list of bpstat's. */ |
c906108c SS |
4308 | bs = *bsp; |
4309 | ||
4310 | breakpoint_proceeded = 0; | |
4311 | for (; bs != NULL; bs = bs->next) | |
4312 | { | |
9add0f1b | 4313 | struct counted_command_line *ccmd; |
6c50ab1c JB |
4314 | struct command_line *cmd; |
4315 | struct cleanup *this_cmd_tree_chain; | |
4316 | ||
4317 | /* Take ownership of the BSP's command tree, if it has one. | |
4318 | ||
4319 | The command tree could legitimately contain commands like | |
4320 | 'step' and 'next', which call clear_proceed_status, which | |
4321 | frees stop_bpstat's command tree. To make sure this doesn't | |
4322 | free the tree we're executing out from under us, we need to | |
4323 | take ownership of the tree ourselves. Since a given bpstat's | |
4324 | commands are only executed once, we don't need to copy it; we | |
4325 | can clear the pointer in the bpstat, and make sure we free | |
4326 | the tree when we're done. */ | |
9add0f1b TT |
4327 | ccmd = bs->commands; |
4328 | bs->commands = NULL; | |
abf85f46 JK |
4329 | this_cmd_tree_chain = make_cleanup_decref_counted_command_line (&ccmd); |
4330 | cmd = ccmd ? ccmd->commands : NULL; | |
4331 | if (command_line_is_silent (cmd)) | |
4332 | { | |
4333 | /* The action has been already done by bpstat_stop_status. */ | |
4334 | cmd = cmd->next; | |
4335 | } | |
6c50ab1c | 4336 | |
c906108c SS |
4337 | while (cmd != NULL) |
4338 | { | |
4339 | execute_control_command (cmd); | |
4340 | ||
4341 | if (breakpoint_proceeded) | |
4342 | break; | |
4343 | else | |
4344 | cmd = cmd->next; | |
4345 | } | |
6c50ab1c JB |
4346 | |
4347 | /* We can free this command tree now. */ | |
4348 | do_cleanups (this_cmd_tree_chain); | |
4349 | ||
c906108c | 4350 | if (breakpoint_proceeded) |
32c1e744 VP |
4351 | { |
4352 | if (target_can_async_p ()) | |
347bddb7 PA |
4353 | /* If we are in async mode, then the target might be still |
4354 | running, not stopped at any breakpoint, so nothing for | |
4355 | us to do here -- just return to the event loop. */ | |
4356 | ; | |
32c1e744 VP |
4357 | else |
4358 | /* In sync mode, when execute_control_command returns | |
4359 | we're already standing on the next breakpoint. | |
347bddb7 PA |
4360 | Breakpoint commands for that stop were not run, since |
4361 | execute_command does not run breakpoint commands -- | |
4362 | only command_line_handler does, but that one is not | |
4363 | involved in execution of breakpoint commands. So, we | |
4364 | can now execute breakpoint commands. It should be | |
4365 | noted that making execute_command do bpstat actions is | |
4366 | not an option -- in this case we'll have recursive | |
4367 | invocation of bpstat for each breakpoint with a | |
4368 | command, and can easily blow up GDB stack. Instead, we | |
4369 | return true, which will trigger the caller to recall us | |
4370 | with the new stop_bpstat. */ | |
4371 | again = 1; | |
4372 | break; | |
32c1e744 | 4373 | } |
c906108c | 4374 | } |
c2b8ed2c | 4375 | do_cleanups (old_chain); |
347bddb7 PA |
4376 | return again; |
4377 | } | |
4378 | ||
4379 | void | |
4380 | bpstat_do_actions (void) | |
4381 | { | |
353d1d73 JK |
4382 | struct cleanup *cleanup_if_error = make_bpstat_clear_actions_cleanup (); |
4383 | ||
347bddb7 PA |
4384 | /* Do any commands attached to breakpoint we are stopped at. */ |
4385 | while (!ptid_equal (inferior_ptid, null_ptid) | |
4386 | && target_has_execution | |
4387 | && !is_exited (inferior_ptid) | |
4388 | && !is_executing (inferior_ptid)) | |
4389 | /* Since in sync mode, bpstat_do_actions may resume the inferior, | |
4390 | and only return when it is stopped at the next breakpoint, we | |
4391 | keep doing breakpoint actions until it returns false to | |
4392 | indicate the inferior was not resumed. */ | |
16c381f0 | 4393 | if (!bpstat_do_actions_1 (&inferior_thread ()->control.stop_bpstat)) |
347bddb7 | 4394 | break; |
353d1d73 JK |
4395 | |
4396 | discard_cleanups (cleanup_if_error); | |
c906108c SS |
4397 | } |
4398 | ||
fa4727a6 DJ |
4399 | /* Print out the (old or new) value associated with a watchpoint. */ |
4400 | ||
4401 | static void | |
4402 | watchpoint_value_print (struct value *val, struct ui_file *stream) | |
4403 | { | |
4404 | if (val == NULL) | |
4405 | fprintf_unfiltered (stream, _("<unreadable>")); | |
4406 | else | |
79a45b7d TT |
4407 | { |
4408 | struct value_print_options opts; | |
4409 | get_user_print_options (&opts); | |
4410 | value_print (val, stream, &opts); | |
4411 | } | |
fa4727a6 DJ |
4412 | } |
4413 | ||
e514a9d6 | 4414 | /* Generic routine for printing messages indicating why we |
4a64f543 | 4415 | stopped. The behavior of this function depends on the value |
e514a9d6 JM |
4416 | 'print_it' in the bpstat structure. Under some circumstances we |
4417 | may decide not to print anything here and delegate the task to | |
4a64f543 | 4418 | normal_stop(). */ |
e514a9d6 JM |
4419 | |
4420 | static enum print_stop_action | |
4421 | print_bp_stop_message (bpstat bs) | |
4422 | { | |
4423 | switch (bs->print_it) | |
4424 | { | |
4425 | case print_it_noop: | |
4a64f543 | 4426 | /* Nothing should be printed for this bpstat entry. */ |
e514a9d6 JM |
4427 | return PRINT_UNKNOWN; |
4428 | break; | |
4429 | ||
4430 | case print_it_done: | |
4431 | /* We still want to print the frame, but we already printed the | |
4a64f543 | 4432 | relevant messages. */ |
e514a9d6 JM |
4433 | return PRINT_SRC_AND_LOC; |
4434 | break; | |
4435 | ||
4436 | case print_it_normal: | |
4f8d1dc6 | 4437 | { |
f431efe5 PA |
4438 | struct breakpoint *b = bs->breakpoint_at; |
4439 | ||
1a6a67de TJB |
4440 | /* bs->breakpoint_at can be NULL if it was a momentary breakpoint |
4441 | which has since been deleted. */ | |
4442 | if (b == NULL) | |
4443 | return PRINT_UNKNOWN; | |
4444 | ||
348d480f PA |
4445 | /* Normal case. Call the breakpoint's print_it method. */ |
4446 | return b->ops->print_it (bs); | |
4f8d1dc6 | 4447 | } |
348d480f | 4448 | break; |
3086aeae | 4449 | |
e514a9d6 | 4450 | default: |
8e65ff28 | 4451 | internal_error (__FILE__, __LINE__, |
e2e0b3e5 | 4452 | _("print_bp_stop_message: unrecognized enum value")); |
e514a9d6 | 4453 | break; |
c906108c | 4454 | } |
c906108c SS |
4455 | } |
4456 | ||
edcc5120 TT |
4457 | /* A helper function that prints a shared library stopped event. */ |
4458 | ||
4459 | static void | |
4460 | print_solib_event (int is_catchpoint) | |
4461 | { | |
4462 | int any_deleted | |
4463 | = !VEC_empty (char_ptr, current_program_space->deleted_solibs); | |
4464 | int any_added | |
4465 | = !VEC_empty (so_list_ptr, current_program_space->added_solibs); | |
4466 | ||
4467 | if (!is_catchpoint) | |
4468 | { | |
4469 | if (any_added || any_deleted) | |
4470 | ui_out_text (current_uiout, | |
4471 | _("Stopped due to shared library event:\n")); | |
4472 | else | |
4473 | ui_out_text (current_uiout, | |
4474 | _("Stopped due to shared library event (no " | |
4475 | "libraries added or removed)\n")); | |
4476 | } | |
4477 | ||
4478 | if (ui_out_is_mi_like_p (current_uiout)) | |
4479 | ui_out_field_string (current_uiout, "reason", | |
4480 | async_reason_lookup (EXEC_ASYNC_SOLIB_EVENT)); | |
4481 | ||
4482 | if (any_deleted) | |
4483 | { | |
4484 | struct cleanup *cleanup; | |
4485 | char *name; | |
4486 | int ix; | |
4487 | ||
4488 | ui_out_text (current_uiout, _(" Inferior unloaded ")); | |
4489 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4490 | "removed"); | |
4491 | for (ix = 0; | |
4492 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
4493 | ix, name); | |
4494 | ++ix) | |
4495 | { | |
4496 | if (ix > 0) | |
4497 | ui_out_text (current_uiout, " "); | |
4498 | ui_out_field_string (current_uiout, "library", name); | |
4499 | ui_out_text (current_uiout, "\n"); | |
4500 | } | |
4501 | ||
4502 | do_cleanups (cleanup); | |
4503 | } | |
4504 | ||
4505 | if (any_added) | |
4506 | { | |
4507 | struct so_list *iter; | |
4508 | int ix; | |
4509 | struct cleanup *cleanup; | |
4510 | ||
4511 | ui_out_text (current_uiout, _(" Inferior loaded ")); | |
4512 | cleanup = make_cleanup_ui_out_list_begin_end (current_uiout, | |
4513 | "added"); | |
4514 | for (ix = 0; | |
4515 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
4516 | ix, iter); | |
4517 | ++ix) | |
4518 | { | |
4519 | if (ix > 0) | |
4520 | ui_out_text (current_uiout, " "); | |
4521 | ui_out_field_string (current_uiout, "library", iter->so_name); | |
4522 | ui_out_text (current_uiout, "\n"); | |
4523 | } | |
4524 | ||
4525 | do_cleanups (cleanup); | |
4526 | } | |
4527 | } | |
4528 | ||
e514a9d6 JM |
4529 | /* Print a message indicating what happened. This is called from |
4530 | normal_stop(). The input to this routine is the head of the bpstat | |
36dfb11c TT |
4531 | list - a list of the eventpoints that caused this stop. KIND is |
4532 | the target_waitkind for the stopping event. This | |
e514a9d6 JM |
4533 | routine calls the generic print routine for printing a message |
4534 | about reasons for stopping. This will print (for example) the | |
4535 | "Breakpoint n," part of the output. The return value of this | |
4536 | routine is one of: | |
c906108c | 4537 | |
4a64f543 | 4538 | PRINT_UNKNOWN: Means we printed nothing. |
917317f4 | 4539 | PRINT_SRC_AND_LOC: Means we printed something, and expect subsequent |
4a64f543 | 4540 | code to print the location. An example is |
c5aa993b JM |
4541 | "Breakpoint 1, " which should be followed by |
4542 | the location. | |
917317f4 | 4543 | PRINT_SRC_ONLY: Means we printed something, but there is no need |
c5aa993b JM |
4544 | to also print the location part of the message. |
4545 | An example is the catch/throw messages, which | |
4a64f543 | 4546 | don't require a location appended to the end. |
917317f4 | 4547 | PRINT_NOTHING: We have done some printing and we don't need any |
4a64f543 | 4548 | further info to be printed. */ |
c906108c | 4549 | |
917317f4 | 4550 | enum print_stop_action |
36dfb11c | 4551 | bpstat_print (bpstat bs, int kind) |
c906108c SS |
4552 | { |
4553 | int val; | |
c5aa993b | 4554 | |
c906108c | 4555 | /* Maybe another breakpoint in the chain caused us to stop. |
53a5351d JM |
4556 | (Currently all watchpoints go on the bpstat whether hit or not. |
4557 | That probably could (should) be changed, provided care is taken | |
c906108c | 4558 | with respect to bpstat_explains_signal). */ |
e514a9d6 JM |
4559 | for (; bs; bs = bs->next) |
4560 | { | |
4561 | val = print_bp_stop_message (bs); | |
4562 | if (val == PRINT_SRC_ONLY | |
4563 | || val == PRINT_SRC_AND_LOC | |
4564 | || val == PRINT_NOTHING) | |
4565 | return val; | |
4566 | } | |
c906108c | 4567 | |
36dfb11c TT |
4568 | /* If we had hit a shared library event breakpoint, |
4569 | print_bp_stop_message would print out this message. If we hit an | |
4570 | OS-level shared library event, do the same thing. */ | |
4571 | if (kind == TARGET_WAITKIND_LOADED) | |
4572 | { | |
edcc5120 | 4573 | print_solib_event (0); |
36dfb11c TT |
4574 | return PRINT_NOTHING; |
4575 | } | |
4576 | ||
e514a9d6 | 4577 | /* We reached the end of the chain, or we got a null BS to start |
4a64f543 | 4578 | with and nothing was printed. */ |
917317f4 | 4579 | return PRINT_UNKNOWN; |
c906108c SS |
4580 | } |
4581 | ||
4a64f543 MS |
4582 | /* Evaluate the expression EXP and return 1 if value is zero. This is |
4583 | used inside a catch_errors to evaluate the breakpoint condition. | |
4584 | The argument is a "struct expression *" that has been cast to a | |
4585 | "char *" to make it pass through catch_errors. */ | |
c906108c SS |
4586 | |
4587 | static int | |
4efb68b1 | 4588 | breakpoint_cond_eval (void *exp) |
c906108c | 4589 | { |
278cd55f | 4590 | struct value *mark = value_mark (); |
c5aa993b | 4591 | int i = !value_true (evaluate_expression ((struct expression *) exp)); |
cc59ec59 | 4592 | |
c906108c SS |
4593 | value_free_to_mark (mark); |
4594 | return i; | |
4595 | } | |
4596 | ||
5760d0ab | 4597 | /* Allocate a new bpstat. Link it to the FIFO list by BS_LINK_POINTER. */ |
c906108c SS |
4598 | |
4599 | static bpstat | |
5760d0ab | 4600 | bpstat_alloc (struct bp_location *bl, bpstat **bs_link_pointer) |
c906108c SS |
4601 | { |
4602 | bpstat bs; | |
4603 | ||
4604 | bs = (bpstat) xmalloc (sizeof (*bs)); | |
5760d0ab JK |
4605 | bs->next = NULL; |
4606 | **bs_link_pointer = bs; | |
4607 | *bs_link_pointer = &bs->next; | |
f431efe5 PA |
4608 | bs->breakpoint_at = bl->owner; |
4609 | bs->bp_location_at = bl; | |
4610 | incref_bp_location (bl); | |
c906108c SS |
4611 | /* If the condition is false, etc., don't do the commands. */ |
4612 | bs->commands = NULL; | |
4613 | bs->old_val = NULL; | |
4614 | bs->print_it = print_it_normal; | |
4615 | return bs; | |
4616 | } | |
4617 | \f | |
d983da9c DJ |
4618 | /* The target has stopped with waitstatus WS. Check if any hardware |
4619 | watchpoints have triggered, according to the target. */ | |
4620 | ||
4621 | int | |
4622 | watchpoints_triggered (struct target_waitstatus *ws) | |
4623 | { | |
d92524f1 | 4624 | int stopped_by_watchpoint = target_stopped_by_watchpoint (); |
d983da9c DJ |
4625 | CORE_ADDR addr; |
4626 | struct breakpoint *b; | |
4627 | ||
4628 | if (!stopped_by_watchpoint) | |
4629 | { | |
4630 | /* We were not stopped by a watchpoint. Mark all watchpoints | |
4631 | as not triggered. */ | |
4632 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4633 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4634 | { |
4635 | struct watchpoint *w = (struct watchpoint *) b; | |
4636 | ||
4637 | w->watchpoint_triggered = watch_triggered_no; | |
4638 | } | |
d983da9c DJ |
4639 | |
4640 | return 0; | |
4641 | } | |
4642 | ||
4643 | if (!target_stopped_data_address (¤t_target, &addr)) | |
4644 | { | |
4645 | /* We were stopped by a watchpoint, but we don't know where. | |
4646 | Mark all watchpoints as unknown. */ | |
4647 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4648 | if (is_hardware_watchpoint (b)) |
3a5c3e22 PA |
4649 | { |
4650 | struct watchpoint *w = (struct watchpoint *) b; | |
4651 | ||
4652 | w->watchpoint_triggered = watch_triggered_unknown; | |
4653 | } | |
d983da9c DJ |
4654 | |
4655 | return stopped_by_watchpoint; | |
4656 | } | |
4657 | ||
4658 | /* The target could report the data address. Mark watchpoints | |
4659 | affected by this data address as triggered, and all others as not | |
4660 | triggered. */ | |
4661 | ||
4662 | ALL_BREAKPOINTS (b) | |
cc60f2e3 | 4663 | if (is_hardware_watchpoint (b)) |
d983da9c | 4664 | { |
3a5c3e22 | 4665 | struct watchpoint *w = (struct watchpoint *) b; |
a5606eee | 4666 | struct bp_location *loc; |
d983da9c | 4667 | |
3a5c3e22 | 4668 | w->watchpoint_triggered = watch_triggered_no; |
a5606eee | 4669 | for (loc = b->loc; loc; loc = loc->next) |
9c06b0b4 | 4670 | { |
3a5c3e22 | 4671 | if (is_masked_watchpoint (b)) |
9c06b0b4 | 4672 | { |
3a5c3e22 PA |
4673 | CORE_ADDR newaddr = addr & w->hw_wp_mask; |
4674 | CORE_ADDR start = loc->address & w->hw_wp_mask; | |
9c06b0b4 TJB |
4675 | |
4676 | if (newaddr == start) | |
4677 | { | |
3a5c3e22 | 4678 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4679 | break; |
4680 | } | |
4681 | } | |
4682 | /* Exact match not required. Within range is sufficient. */ | |
4683 | else if (target_watchpoint_addr_within_range (¤t_target, | |
4684 | addr, loc->address, | |
4685 | loc->length)) | |
4686 | { | |
3a5c3e22 | 4687 | w->watchpoint_triggered = watch_triggered_yes; |
9c06b0b4 TJB |
4688 | break; |
4689 | } | |
4690 | } | |
d983da9c DJ |
4691 | } |
4692 | ||
4693 | return 1; | |
4694 | } | |
4695 | ||
c906108c SS |
4696 | /* Possible return values for watchpoint_check (this can't be an enum |
4697 | because of check_errors). */ | |
4698 | /* The watchpoint has been deleted. */ | |
4699 | #define WP_DELETED 1 | |
4700 | /* The value has changed. */ | |
4701 | #define WP_VALUE_CHANGED 2 | |
4702 | /* The value has not changed. */ | |
4703 | #define WP_VALUE_NOT_CHANGED 3 | |
60e1c644 PA |
4704 | /* Ignore this watchpoint, no matter if the value changed or not. */ |
4705 | #define WP_IGNORE 4 | |
c906108c SS |
4706 | |
4707 | #define BP_TEMPFLAG 1 | |
4708 | #define BP_HARDWAREFLAG 2 | |
4709 | ||
4a64f543 MS |
4710 | /* Evaluate watchpoint condition expression and check if its value |
4711 | changed. | |
553e4c11 JB |
4712 | |
4713 | P should be a pointer to struct bpstat, but is defined as a void * | |
4714 | in order for this function to be usable with catch_errors. */ | |
c906108c SS |
4715 | |
4716 | static int | |
4efb68b1 | 4717 | watchpoint_check (void *p) |
c906108c SS |
4718 | { |
4719 | bpstat bs = (bpstat) p; | |
3a5c3e22 | 4720 | struct watchpoint *b; |
c906108c SS |
4721 | struct frame_info *fr; |
4722 | int within_current_scope; | |
4723 | ||
f431efe5 | 4724 | /* BS is built from an existing struct breakpoint. */ |
2bdf28a0 | 4725 | gdb_assert (bs->breakpoint_at != NULL); |
3a5c3e22 | 4726 | b = (struct watchpoint *) bs->breakpoint_at; |
d0fb5eae | 4727 | |
f6bc2008 PA |
4728 | /* If this is a local watchpoint, we only want to check if the |
4729 | watchpoint frame is in scope if the current thread is the thread | |
4730 | that was used to create the watchpoint. */ | |
4731 | if (!watchpoint_in_thread_scope (b)) | |
60e1c644 | 4732 | return WP_IGNORE; |
f6bc2008 | 4733 | |
c906108c SS |
4734 | if (b->exp_valid_block == NULL) |
4735 | within_current_scope = 1; | |
4736 | else | |
4737 | { | |
edb3359d DJ |
4738 | struct frame_info *frame = get_current_frame (); |
4739 | struct gdbarch *frame_arch = get_frame_arch (frame); | |
4740 | CORE_ADDR frame_pc = get_frame_pc (frame); | |
4741 | ||
4a64f543 MS |
4742 | /* in_function_epilogue_p() returns a non-zero value if we're |
4743 | still in the function but the stack frame has already been | |
4744 | invalidated. Since we can't rely on the values of local | |
4745 | variables after the stack has been destroyed, we are treating | |
4746 | the watchpoint in that state as `not changed' without further | |
4747 | checking. Don't mark watchpoints as changed if the current | |
4748 | frame is in an epilogue - even if they are in some other | |
4749 | frame, our view of the stack is likely to be wrong and | |
4750 | frame_find_by_id could error out. */ | |
a0f49112 | 4751 | if (gdbarch_in_function_epilogue_p (frame_arch, frame_pc)) |
60e1c644 | 4752 | return WP_IGNORE; |
a0f49112 | 4753 | |
101dcfbe | 4754 | fr = frame_find_by_id (b->watchpoint_frame); |
c906108c | 4755 | within_current_scope = (fr != NULL); |
69fbadd5 DJ |
4756 | |
4757 | /* If we've gotten confused in the unwinder, we might have | |
4758 | returned a frame that can't describe this variable. */ | |
edb3359d DJ |
4759 | if (within_current_scope) |
4760 | { | |
4761 | struct symbol *function; | |
4762 | ||
4763 | function = get_frame_function (fr); | |
4764 | if (function == NULL | |
4765 | || !contained_in (b->exp_valid_block, | |
4766 | SYMBOL_BLOCK_VALUE (function))) | |
4767 | within_current_scope = 0; | |
4768 | } | |
69fbadd5 | 4769 | |
edb3359d | 4770 | if (within_current_scope) |
c906108c SS |
4771 | /* If we end up stopping, the current frame will get selected |
4772 | in normal_stop. So this call to select_frame won't affect | |
4773 | the user. */ | |
0f7d239c | 4774 | select_frame (fr); |
c906108c | 4775 | } |
c5aa993b | 4776 | |
c906108c SS |
4777 | if (within_current_scope) |
4778 | { | |
4a64f543 MS |
4779 | /* We use value_{,free_to_}mark because it could be a *long* |
4780 | time before we return to the command level and call | |
4781 | free_all_values. We can't call free_all_values because we | |
4782 | might be in the middle of evaluating a function call. */ | |
c906108c | 4783 | |
0cf6dd15 | 4784 | int pc = 0; |
9c06b0b4 | 4785 | struct value *mark; |
fa4727a6 DJ |
4786 | struct value *new_val; |
4787 | ||
3a5c3e22 | 4788 | if (is_masked_watchpoint (&b->base)) |
9c06b0b4 TJB |
4789 | /* Since we don't know the exact trigger address (from |
4790 | stopped_data_address), just tell the user we've triggered | |
4791 | a mask watchpoint. */ | |
4792 | return WP_VALUE_CHANGED; | |
4793 | ||
4794 | mark = value_mark (); | |
0cf6dd15 | 4795 | fetch_subexp_value (b->exp, &pc, &new_val, NULL, NULL); |
218d2fc6 | 4796 | |
4a64f543 MS |
4797 | /* We use value_equal_contents instead of value_equal because |
4798 | the latter coerces an array to a pointer, thus comparing just | |
4799 | the address of the array instead of its contents. This is | |
4800 | not what we want. */ | |
fa4727a6 | 4801 | if ((b->val != NULL) != (new_val != NULL) |
218d2fc6 | 4802 | || (b->val != NULL && !value_equal_contents (b->val, new_val))) |
c906108c | 4803 | { |
fa4727a6 DJ |
4804 | if (new_val != NULL) |
4805 | { | |
4806 | release_value (new_val); | |
4807 | value_free_to_mark (mark); | |
4808 | } | |
c906108c SS |
4809 | bs->old_val = b->val; |
4810 | b->val = new_val; | |
fa4727a6 | 4811 | b->val_valid = 1; |
c906108c SS |
4812 | return WP_VALUE_CHANGED; |
4813 | } | |
4814 | else | |
4815 | { | |
60e1c644 | 4816 | /* Nothing changed. */ |
c906108c | 4817 | value_free_to_mark (mark); |
c906108c SS |
4818 | return WP_VALUE_NOT_CHANGED; |
4819 | } | |
4820 | } | |
4821 | else | |
4822 | { | |
79a45e25 PA |
4823 | struct ui_out *uiout = current_uiout; |
4824 | ||
c906108c | 4825 | /* This seems like the only logical thing to do because |
c5aa993b JM |
4826 | if we temporarily ignored the watchpoint, then when |
4827 | we reenter the block in which it is valid it contains | |
4828 | garbage (in the case of a function, it may have two | |
4829 | garbage values, one before and one after the prologue). | |
4830 | So we can't even detect the first assignment to it and | |
4831 | watch after that (since the garbage may or may not equal | |
4832 | the first value assigned). */ | |
348d480f PA |
4833 | /* We print all the stop information in |
4834 | breakpoint_ops->print_it, but in this case, by the time we | |
4835 | call breakpoint_ops->print_it this bp will be deleted | |
4836 | already. So we have no choice but print the information | |
4837 | here. */ | |
9dc5e2a9 | 4838 | if (ui_out_is_mi_like_p (uiout)) |
034dad6f BR |
4839 | ui_out_field_string |
4840 | (uiout, "reason", async_reason_lookup (EXEC_ASYNC_WATCHPOINT_SCOPE)); | |
8b93c638 | 4841 | ui_out_text (uiout, "\nWatchpoint "); |
3a5c3e22 | 4842 | ui_out_field_int (uiout, "wpnum", b->base.number); |
3e43a32a MS |
4843 | ui_out_text (uiout, |
4844 | " deleted because the program has left the block in\n\ | |
8b93c638 | 4845 | which its expression is valid.\n"); |
4ce44c66 | 4846 | |
cdac0397 | 4847 | /* Make sure the watchpoint's commands aren't executed. */ |
3a5c3e22 | 4848 | decref_counted_command_line (&b->base.commands); |
d0fb5eae | 4849 | watchpoint_del_at_next_stop (b); |
c906108c SS |
4850 | |
4851 | return WP_DELETED; | |
4852 | } | |
4853 | } | |
4854 | ||
18a18393 | 4855 | /* Return true if it looks like target has stopped due to hitting |
348d480f PA |
4856 | breakpoint location BL. This function does not check if we should |
4857 | stop, only if BL explains the stop. */ | |
4858 | ||
18a18393 | 4859 | static int |
6c95b8df | 4860 | bpstat_check_location (const struct bp_location *bl, |
09ac7c10 TT |
4861 | struct address_space *aspace, CORE_ADDR bp_addr, |
4862 | const struct target_waitstatus *ws) | |
18a18393 VP |
4863 | { |
4864 | struct breakpoint *b = bl->owner; | |
4865 | ||
348d480f | 4866 | /* BL is from an existing breakpoint. */ |
2bdf28a0 JK |
4867 | gdb_assert (b != NULL); |
4868 | ||
09ac7c10 | 4869 | return b->ops->breakpoint_hit (bl, aspace, bp_addr, ws); |
18a18393 VP |
4870 | } |
4871 | ||
3a5c3e22 PA |
4872 | /* Determine if the watched values have actually changed, and we |
4873 | should stop. If not, set BS->stop to 0. */ | |
4874 | ||
18a18393 VP |
4875 | static void |
4876 | bpstat_check_watchpoint (bpstat bs) | |
4877 | { | |
2bdf28a0 | 4878 | const struct bp_location *bl; |
3a5c3e22 | 4879 | struct watchpoint *b; |
2bdf28a0 JK |
4880 | |
4881 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 4882 | bl = bs->bp_location_at; |
2bdf28a0 | 4883 | gdb_assert (bl != NULL); |
3a5c3e22 | 4884 | b = (struct watchpoint *) bs->breakpoint_at; |
2bdf28a0 | 4885 | gdb_assert (b != NULL); |
18a18393 | 4886 | |
18a18393 | 4887 | { |
18a18393 VP |
4888 | int must_check_value = 0; |
4889 | ||
3a5c3e22 | 4890 | if (b->base.type == bp_watchpoint) |
18a18393 VP |
4891 | /* For a software watchpoint, we must always check the |
4892 | watched value. */ | |
4893 | must_check_value = 1; | |
4894 | else if (b->watchpoint_triggered == watch_triggered_yes) | |
4895 | /* We have a hardware watchpoint (read, write, or access) | |
4896 | and the target earlier reported an address watched by | |
4897 | this watchpoint. */ | |
4898 | must_check_value = 1; | |
4899 | else if (b->watchpoint_triggered == watch_triggered_unknown | |
3a5c3e22 | 4900 | && b->base.type == bp_hardware_watchpoint) |
18a18393 VP |
4901 | /* We were stopped by a hardware watchpoint, but the target could |
4902 | not report the data address. We must check the watchpoint's | |
4903 | value. Access and read watchpoints are out of luck; without | |
4904 | a data address, we can't figure it out. */ | |
4905 | must_check_value = 1; | |
3a5c3e22 | 4906 | |
18a18393 VP |
4907 | if (must_check_value) |
4908 | { | |
3e43a32a MS |
4909 | char *message |
4910 | = xstrprintf ("Error evaluating expression for watchpoint %d\n", | |
3a5c3e22 | 4911 | b->base.number); |
18a18393 VP |
4912 | struct cleanup *cleanups = make_cleanup (xfree, message); |
4913 | int e = catch_errors (watchpoint_check, bs, message, | |
4914 | RETURN_MASK_ALL); | |
4915 | do_cleanups (cleanups); | |
4916 | switch (e) | |
4917 | { | |
4918 | case WP_DELETED: | |
4919 | /* We've already printed what needs to be printed. */ | |
4920 | bs->print_it = print_it_done; | |
4921 | /* Stop. */ | |
4922 | break; | |
60e1c644 PA |
4923 | case WP_IGNORE: |
4924 | bs->print_it = print_it_noop; | |
4925 | bs->stop = 0; | |
4926 | break; | |
18a18393 | 4927 | case WP_VALUE_CHANGED: |
3a5c3e22 | 4928 | if (b->base.type == bp_read_watchpoint) |
18a18393 | 4929 | { |
85d721b8 PA |
4930 | /* There are two cases to consider here: |
4931 | ||
4a64f543 | 4932 | 1. We're watching the triggered memory for reads. |
85d721b8 PA |
4933 | In that case, trust the target, and always report |
4934 | the watchpoint hit to the user. Even though | |
4935 | reads don't cause value changes, the value may | |
4936 | have changed since the last time it was read, and | |
4937 | since we're not trapping writes, we will not see | |
4938 | those, and as such we should ignore our notion of | |
4939 | old value. | |
4940 | ||
4a64f543 | 4941 | 2. We're watching the triggered memory for both |
85d721b8 PA |
4942 | reads and writes. There are two ways this may |
4943 | happen: | |
4944 | ||
4a64f543 | 4945 | 2.1. This is a target that can't break on data |
85d721b8 PA |
4946 | reads only, but can break on accesses (reads or |
4947 | writes), such as e.g., x86. We detect this case | |
4948 | at the time we try to insert read watchpoints. | |
4949 | ||
4a64f543 | 4950 | 2.2. Otherwise, the target supports read |
85d721b8 PA |
4951 | watchpoints, but, the user set an access or write |
4952 | watchpoint watching the same memory as this read | |
4953 | watchpoint. | |
4954 | ||
4955 | If we're watching memory writes as well as reads, | |
4956 | ignore watchpoint hits when we find that the | |
4957 | value hasn't changed, as reads don't cause | |
4958 | changes. This still gives false positives when | |
4959 | the program writes the same value to memory as | |
4960 | what there was already in memory (we will confuse | |
4961 | it for a read), but it's much better than | |
4962 | nothing. */ | |
4963 | ||
4964 | int other_write_watchpoint = 0; | |
4965 | ||
4966 | if (bl->watchpoint_type == hw_read) | |
4967 | { | |
4968 | struct breakpoint *other_b; | |
4969 | ||
4970 | ALL_BREAKPOINTS (other_b) | |
3a5c3e22 PA |
4971 | if (other_b->type == bp_hardware_watchpoint |
4972 | || other_b->type == bp_access_watchpoint) | |
85d721b8 | 4973 | { |
3a5c3e22 PA |
4974 | struct watchpoint *other_w = |
4975 | (struct watchpoint *) other_b; | |
4976 | ||
4977 | if (other_w->watchpoint_triggered | |
4978 | == watch_triggered_yes) | |
4979 | { | |
4980 | other_write_watchpoint = 1; | |
4981 | break; | |
4982 | } | |
85d721b8 PA |
4983 | } |
4984 | } | |
4985 | ||
4986 | if (other_write_watchpoint | |
4987 | || bl->watchpoint_type == hw_access) | |
4988 | { | |
4989 | /* We're watching the same memory for writes, | |
4990 | and the value changed since the last time we | |
4991 | updated it, so this trap must be for a write. | |
4992 | Ignore it. */ | |
4993 | bs->print_it = print_it_noop; | |
4994 | bs->stop = 0; | |
4995 | } | |
18a18393 VP |
4996 | } |
4997 | break; | |
4998 | case WP_VALUE_NOT_CHANGED: | |
3a5c3e22 PA |
4999 | if (b->base.type == bp_hardware_watchpoint |
5000 | || b->base.type == bp_watchpoint) | |
18a18393 VP |
5001 | { |
5002 | /* Don't stop: write watchpoints shouldn't fire if | |
5003 | the value hasn't changed. */ | |
5004 | bs->print_it = print_it_noop; | |
5005 | bs->stop = 0; | |
5006 | } | |
5007 | /* Stop. */ | |
5008 | break; | |
5009 | default: | |
5010 | /* Can't happen. */ | |
5011 | case 0: | |
5012 | /* Error from catch_errors. */ | |
3a5c3e22 | 5013 | printf_filtered (_("Watchpoint %d deleted.\n"), b->base.number); |
d0fb5eae | 5014 | watchpoint_del_at_next_stop (b); |
18a18393 VP |
5015 | /* We've already printed what needs to be printed. */ |
5016 | bs->print_it = print_it_done; | |
5017 | break; | |
5018 | } | |
5019 | } | |
5020 | else /* must_check_value == 0 */ | |
5021 | { | |
5022 | /* This is a case where some watchpoint(s) triggered, but | |
5023 | not at the address of this watchpoint, or else no | |
5024 | watchpoint triggered after all. So don't print | |
5025 | anything for this watchpoint. */ | |
5026 | bs->print_it = print_it_noop; | |
5027 | bs->stop = 0; | |
5028 | } | |
5029 | } | |
5030 | } | |
5031 | ||
5032 | ||
5033 | /* Check conditions (condition proper, frame, thread and ignore count) | |
5034 | of breakpoint referred to by BS. If we should not stop for this | |
5035 | breakpoint, set BS->stop to 0. */ | |
f431efe5 | 5036 | |
18a18393 VP |
5037 | static void |
5038 | bpstat_check_breakpoint_conditions (bpstat bs, ptid_t ptid) | |
5039 | { | |
5040 | int thread_id = pid_to_thread_id (ptid); | |
2bdf28a0 JK |
5041 | const struct bp_location *bl; |
5042 | struct breakpoint *b; | |
5043 | ||
5044 | /* BS is built for existing struct breakpoint. */ | |
f431efe5 | 5045 | bl = bs->bp_location_at; |
2bdf28a0 | 5046 | gdb_assert (bl != NULL); |
f431efe5 | 5047 | b = bs->breakpoint_at; |
2bdf28a0 | 5048 | gdb_assert (b != NULL); |
18a18393 | 5049 | |
b775012e LM |
5050 | /* Even if the target evaluated the condition on its end and notified GDB, we |
5051 | need to do so again since GDB does not know if we stopped due to a | |
5052 | breakpoint or a single step breakpoint. */ | |
5053 | ||
18a18393 | 5054 | if (frame_id_p (b->frame_id) |
edb3359d | 5055 | && !frame_id_eq (b->frame_id, get_stack_frame_id (get_current_frame ()))) |
18a18393 VP |
5056 | bs->stop = 0; |
5057 | else if (bs->stop) | |
5058 | { | |
5059 | int value_is_zero = 0; | |
60e1c644 PA |
5060 | struct expression *cond; |
5061 | ||
7371cf6d PM |
5062 | /* Evaluate Python breakpoints that have a "stop" |
5063 | method implemented. */ | |
5064 | if (b->py_bp_object) | |
5065 | bs->stop = gdbpy_should_stop (b->py_bp_object); | |
5066 | ||
60e1c644 | 5067 | if (is_watchpoint (b)) |
3a5c3e22 PA |
5068 | { |
5069 | struct watchpoint *w = (struct watchpoint *) b; | |
5070 | ||
5071 | cond = w->cond_exp; | |
5072 | } | |
60e1c644 PA |
5073 | else |
5074 | cond = bl->cond; | |
5075 | ||
f431efe5 | 5076 | if (cond && b->disposition != disp_del_at_next_stop) |
18a18393 | 5077 | { |
60e1c644 | 5078 | int within_current_scope = 1; |
3a5c3e22 | 5079 | struct watchpoint * w; |
60e1c644 | 5080 | |
c5bc3a77 DJ |
5081 | /* We use value_mark and value_free_to_mark because it could |
5082 | be a long time before we return to the command level and | |
5083 | call free_all_values. We can't call free_all_values | |
5084 | because we might be in the middle of evaluating a | |
5085 | function call. */ | |
5086 | struct value *mark = value_mark (); | |
5087 | ||
3a5c3e22 PA |
5088 | if (is_watchpoint (b)) |
5089 | w = (struct watchpoint *) b; | |
5090 | else | |
5091 | w = NULL; | |
5092 | ||
edb3359d DJ |
5093 | /* Need to select the frame, with all that implies so that |
5094 | the conditions will have the right context. Because we | |
5095 | use the frame, we will not see an inlined function's | |
5096 | variables when we arrive at a breakpoint at the start | |
5097 | of the inlined function; the current frame will be the | |
5098 | call site. */ | |
3a5c3e22 | 5099 | if (w == NULL || w->cond_exp_valid_block == NULL) |
60e1c644 PA |
5100 | select_frame (get_current_frame ()); |
5101 | else | |
5102 | { | |
5103 | struct frame_info *frame; | |
5104 | ||
5105 | /* For local watchpoint expressions, which particular | |
5106 | instance of a local is being watched matters, so we | |
5107 | keep track of the frame to evaluate the expression | |
5108 | in. To evaluate the condition however, it doesn't | |
5109 | really matter which instantiation of the function | |
5110 | where the condition makes sense triggers the | |
5111 | watchpoint. This allows an expression like "watch | |
5112 | global if q > 10" set in `func', catch writes to | |
5113 | global on all threads that call `func', or catch | |
5114 | writes on all recursive calls of `func' by a single | |
5115 | thread. We simply always evaluate the condition in | |
5116 | the innermost frame that's executing where it makes | |
5117 | sense to evaluate the condition. It seems | |
5118 | intuitive. */ | |
3a5c3e22 | 5119 | frame = block_innermost_frame (w->cond_exp_valid_block); |
60e1c644 PA |
5120 | if (frame != NULL) |
5121 | select_frame (frame); | |
5122 | else | |
5123 | within_current_scope = 0; | |
5124 | } | |
5125 | if (within_current_scope) | |
5126 | value_is_zero | |
5127 | = catch_errors (breakpoint_cond_eval, cond, | |
5128 | "Error in testing breakpoint condition:\n", | |
5129 | RETURN_MASK_ALL); | |
5130 | else | |
5131 | { | |
5132 | warning (_("Watchpoint condition cannot be tested " | |
5133 | "in the current scope")); | |
5134 | /* If we failed to set the right context for this | |
5135 | watchpoint, unconditionally report it. */ | |
5136 | value_is_zero = 0; | |
5137 | } | |
4a64f543 | 5138 | /* FIXME-someday, should give breakpoint #. */ |
c5bc3a77 | 5139 | value_free_to_mark (mark); |
18a18393 | 5140 | } |
60e1c644 PA |
5141 | |
5142 | if (cond && value_is_zero) | |
18a18393 VP |
5143 | { |
5144 | bs->stop = 0; | |
5145 | } | |
5146 | else if (b->thread != -1 && b->thread != thread_id) | |
5147 | { | |
5148 | bs->stop = 0; | |
5149 | } | |
5150 | else if (b->ignore_count > 0) | |
5151 | { | |
5152 | b->ignore_count--; | |
18a18393 | 5153 | bs->stop = 0; |
4a64f543 | 5154 | /* Increase the hit count even though we don't stop. */ |
18a18393 | 5155 | ++(b->hit_count); |
8d3788bd | 5156 | observer_notify_breakpoint_modified (b); |
18a18393 VP |
5157 | } |
5158 | } | |
5159 | } | |
5160 | ||
5161 | ||
9709f61c | 5162 | /* Get a bpstat associated with having just stopped at address |
d983da9c | 5163 | BP_ADDR in thread PTID. |
c906108c | 5164 | |
d983da9c | 5165 | Determine whether we stopped at a breakpoint, etc, or whether we |
4a64f543 MS |
5166 | don't understand this stop. Result is a chain of bpstat's such |
5167 | that: | |
c906108c | 5168 | |
c5aa993b | 5169 | if we don't understand the stop, the result is a null pointer. |
c906108c | 5170 | |
c5aa993b | 5171 | if we understand why we stopped, the result is not null. |
c906108c | 5172 | |
c5aa993b JM |
5173 | Each element of the chain refers to a particular breakpoint or |
5174 | watchpoint at which we have stopped. (We may have stopped for | |
5175 | several reasons concurrently.) | |
c906108c | 5176 | |
c5aa993b JM |
5177 | Each element of the chain has valid next, breakpoint_at, |
5178 | commands, FIXME??? fields. */ | |
c906108c SS |
5179 | |
5180 | bpstat | |
6c95b8df | 5181 | bpstat_stop_status (struct address_space *aspace, |
09ac7c10 TT |
5182 | CORE_ADDR bp_addr, ptid_t ptid, |
5183 | const struct target_waitstatus *ws) | |
c906108c | 5184 | { |
0d381245 | 5185 | struct breakpoint *b = NULL; |
afe38095 | 5186 | struct bp_location *bl; |
20874c92 | 5187 | struct bp_location *loc; |
5760d0ab JK |
5188 | /* First item of allocated bpstat's. */ |
5189 | bpstat bs_head = NULL, *bs_link = &bs_head; | |
c906108c | 5190 | /* Pointer to the last thing in the chain currently. */ |
5760d0ab | 5191 | bpstat bs; |
20874c92 | 5192 | int ix; |
429374b8 | 5193 | int need_remove_insert; |
f431efe5 | 5194 | int removed_any; |
c906108c | 5195 | |
f431efe5 PA |
5196 | /* First, build the bpstat chain with locations that explain a |
5197 | target stop, while being careful to not set the target running, | |
5198 | as that may invalidate locations (in particular watchpoint | |
5199 | locations are recreated). Resuming will happen here with | |
5200 | breakpoint conditions or watchpoint expressions that include | |
5201 | inferior function calls. */ | |
c5aa993b | 5202 | |
429374b8 JK |
5203 | ALL_BREAKPOINTS (b) |
5204 | { | |
5205 | if (!breakpoint_enabled (b) && b->enable_state != bp_permanent) | |
5206 | continue; | |
a5606eee | 5207 | |
429374b8 JK |
5208 | for (bl = b->loc; bl != NULL; bl = bl->next) |
5209 | { | |
4a64f543 MS |
5210 | /* For hardware watchpoints, we look only at the first |
5211 | location. The watchpoint_check function will work on the | |
5212 | entire expression, not the individual locations. For | |
5213 | read watchpoints, the watchpoints_triggered function has | |
5214 | checked all locations already. */ | |
429374b8 JK |
5215 | if (b->type == bp_hardware_watchpoint && bl != b->loc) |
5216 | break; | |
18a18393 | 5217 | |
f6592439 | 5218 | if (!bl->enabled || bl->shlib_disabled) |
429374b8 | 5219 | continue; |
c5aa993b | 5220 | |
09ac7c10 | 5221 | if (!bpstat_check_location (bl, aspace, bp_addr, ws)) |
429374b8 | 5222 | continue; |
c5aa993b | 5223 | |
4a64f543 MS |
5224 | /* Come here if it's a watchpoint, or if the break address |
5225 | matches. */ | |
c5aa993b | 5226 | |
4a64f543 MS |
5227 | bs = bpstat_alloc (bl, &bs_link); /* Alloc a bpstat to |
5228 | explain stop. */ | |
c5aa993b | 5229 | |
f431efe5 PA |
5230 | /* Assume we stop. Should we find a watchpoint that is not |
5231 | actually triggered, or if the condition of the breakpoint | |
5232 | evaluates as false, we'll reset 'stop' to 0. */ | |
429374b8 JK |
5233 | bs->stop = 1; |
5234 | bs->print = 1; | |
d983da9c | 5235 | |
f431efe5 PA |
5236 | /* If this is a scope breakpoint, mark the associated |
5237 | watchpoint as triggered so that we will handle the | |
5238 | out-of-scope event. We'll get to the watchpoint next | |
5239 | iteration. */ | |
d0fb5eae | 5240 | if (b->type == bp_watchpoint_scope && b->related_breakpoint != b) |
3a5c3e22 PA |
5241 | { |
5242 | struct watchpoint *w = (struct watchpoint *) b->related_breakpoint; | |
5243 | ||
5244 | w->watchpoint_triggered = watch_triggered_yes; | |
5245 | } | |
f431efe5 PA |
5246 | } |
5247 | } | |
5248 | ||
5249 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
5250 | { | |
f1310107 | 5251 | if (breakpoint_location_address_match (loc, aspace, bp_addr)) |
f431efe5 | 5252 | { |
5760d0ab | 5253 | bs = bpstat_alloc (loc, &bs_link); |
f431efe5 PA |
5254 | /* For hits of moribund locations, we should just proceed. */ |
5255 | bs->stop = 0; | |
5256 | bs->print = 0; | |
5257 | bs->print_it = print_it_noop; | |
5258 | } | |
5259 | } | |
5260 | ||
edcc5120 TT |
5261 | /* A bit of special processing for shlib breakpoints. We need to |
5262 | process solib loading here, so that the lists of loaded and | |
5263 | unloaded libraries are correct before we handle "catch load" and | |
5264 | "catch unload". */ | |
5265 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
5266 | { | |
5d268276 | 5267 | if (bs->breakpoint_at && bs->breakpoint_at->type == bp_shlib_event) |
edcc5120 TT |
5268 | { |
5269 | handle_solib_event (); | |
5270 | break; | |
5271 | } | |
5272 | } | |
5273 | ||
f431efe5 PA |
5274 | /* Now go through the locations that caused the target to stop, and |
5275 | check whether we're interested in reporting this stop to higher | |
5276 | layers, or whether we should resume the target transparently. */ | |
5277 | ||
5278 | removed_any = 0; | |
5279 | ||
5760d0ab | 5280 | for (bs = bs_head; bs != NULL; bs = bs->next) |
f431efe5 PA |
5281 | { |
5282 | if (!bs->stop) | |
5283 | continue; | |
5284 | ||
f431efe5 | 5285 | b = bs->breakpoint_at; |
348d480f PA |
5286 | b->ops->check_status (bs); |
5287 | if (bs->stop) | |
28010a5d | 5288 | { |
348d480f | 5289 | bpstat_check_breakpoint_conditions (bs, ptid); |
f431efe5 | 5290 | |
429374b8 JK |
5291 | if (bs->stop) |
5292 | { | |
5293 | ++(b->hit_count); | |
8d3788bd | 5294 | observer_notify_breakpoint_modified (b); |
c906108c | 5295 | |
4a64f543 | 5296 | /* We will stop here. */ |
429374b8 JK |
5297 | if (b->disposition == disp_disable) |
5298 | { | |
816338b5 SS |
5299 | --(b->enable_count); |
5300 | if (b->enable_count <= 0 | |
5301 | && b->enable_state != bp_permanent) | |
429374b8 | 5302 | b->enable_state = bp_disabled; |
f431efe5 | 5303 | removed_any = 1; |
429374b8 JK |
5304 | } |
5305 | if (b->silent) | |
5306 | bs->print = 0; | |
5307 | bs->commands = b->commands; | |
9add0f1b | 5308 | incref_counted_command_line (bs->commands); |
abf85f46 JK |
5309 | if (command_line_is_silent (bs->commands |
5310 | ? bs->commands->commands : NULL)) | |
5311 | bs->print = 0; | |
429374b8 JK |
5312 | } |
5313 | ||
348d480f | 5314 | } |
a9b3a50f PA |
5315 | |
5316 | /* Print nothing for this entry if we don't stop or don't | |
5317 | print. */ | |
5318 | if (!bs->stop || !bs->print) | |
5319 | bs->print_it = print_it_noop; | |
429374b8 | 5320 | } |
876fa593 | 5321 | |
d983da9c DJ |
5322 | /* If we aren't stopping, the value of some hardware watchpoint may |
5323 | not have changed, but the intermediate memory locations we are | |
5324 | watching may have. Don't bother if we're stopping; this will get | |
5325 | done later. */ | |
d832cb68 | 5326 | need_remove_insert = 0; |
5760d0ab JK |
5327 | if (! bpstat_causes_stop (bs_head)) |
5328 | for (bs = bs_head; bs != NULL; bs = bs->next) | |
d983da9c | 5329 | if (!bs->stop |
f431efe5 PA |
5330 | && bs->breakpoint_at |
5331 | && is_hardware_watchpoint (bs->breakpoint_at)) | |
d983da9c | 5332 | { |
3a5c3e22 PA |
5333 | struct watchpoint *w = (struct watchpoint *) bs->breakpoint_at; |
5334 | ||
5335 | update_watchpoint (w, 0 /* don't reparse. */); | |
d832cb68 | 5336 | need_remove_insert = 1; |
d983da9c DJ |
5337 | } |
5338 | ||
d832cb68 | 5339 | if (need_remove_insert) |
2d134ed3 | 5340 | update_global_location_list (1); |
f431efe5 PA |
5341 | else if (removed_any) |
5342 | update_global_location_list (0); | |
d832cb68 | 5343 | |
5760d0ab | 5344 | return bs_head; |
c906108c | 5345 | } |
628fe4e4 JK |
5346 | |
5347 | static void | |
5348 | handle_jit_event (void) | |
5349 | { | |
5350 | struct frame_info *frame; | |
5351 | struct gdbarch *gdbarch; | |
5352 | ||
5353 | /* Switch terminal for any messages produced by | |
5354 | breakpoint_re_set. */ | |
5355 | target_terminal_ours_for_output (); | |
5356 | ||
5357 | frame = get_current_frame (); | |
5358 | gdbarch = get_frame_arch (frame); | |
5359 | ||
5360 | jit_event_handler (gdbarch); | |
5361 | ||
5362 | target_terminal_inferior (); | |
5363 | } | |
5364 | ||
5365 | /* Prepare WHAT final decision for infrun. */ | |
5366 | ||
5367 | /* Decide what infrun needs to do with this bpstat. */ | |
5368 | ||
c906108c | 5369 | struct bpstat_what |
0e30163f | 5370 | bpstat_what (bpstat bs_head) |
c906108c | 5371 | { |
c906108c | 5372 | struct bpstat_what retval; |
628fe4e4 | 5373 | int jit_event = 0; |
0e30163f | 5374 | bpstat bs; |
c906108c | 5375 | |
628fe4e4 | 5376 | retval.main_action = BPSTAT_WHAT_KEEP_CHECKING; |
aa7d318d | 5377 | retval.call_dummy = STOP_NONE; |
186c406b | 5378 | retval.is_longjmp = 0; |
628fe4e4 | 5379 | |
0e30163f | 5380 | for (bs = bs_head; bs != NULL; bs = bs->next) |
c906108c | 5381 | { |
628fe4e4 JK |
5382 | /* Extract this BS's action. After processing each BS, we check |
5383 | if its action overrides all we've seem so far. */ | |
5384 | enum bpstat_what_main_action this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5385 | enum bptype bptype; | |
5386 | ||
c906108c | 5387 | if (bs->breakpoint_at == NULL) |
628fe4e4 JK |
5388 | { |
5389 | /* I suspect this can happen if it was a momentary | |
5390 | breakpoint which has since been deleted. */ | |
5391 | bptype = bp_none; | |
5392 | } | |
20874c92 | 5393 | else |
f431efe5 | 5394 | bptype = bs->breakpoint_at->type; |
628fe4e4 JK |
5395 | |
5396 | switch (bptype) | |
c906108c SS |
5397 | { |
5398 | case bp_none: | |
628fe4e4 | 5399 | break; |
c906108c SS |
5400 | case bp_breakpoint: |
5401 | case bp_hardware_breakpoint: | |
5402 | case bp_until: | |
5403 | case bp_finish: | |
a9b3a50f | 5404 | case bp_shlib_event: |
c906108c SS |
5405 | if (bs->stop) |
5406 | { | |
5407 | if (bs->print) | |
628fe4e4 | 5408 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5409 | else |
628fe4e4 | 5410 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5411 | } |
5412 | else | |
628fe4e4 | 5413 | this_action = BPSTAT_WHAT_SINGLE; |
c906108c SS |
5414 | break; |
5415 | case bp_watchpoint: | |
5416 | case bp_hardware_watchpoint: | |
5417 | case bp_read_watchpoint: | |
5418 | case bp_access_watchpoint: | |
5419 | if (bs->stop) | |
5420 | { | |
5421 | if (bs->print) | |
628fe4e4 | 5422 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c906108c | 5423 | else |
628fe4e4 | 5424 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c SS |
5425 | } |
5426 | else | |
628fe4e4 JK |
5427 | { |
5428 | /* There was a watchpoint, but we're not stopping. | |
5429 | This requires no further action. */ | |
5430 | } | |
c906108c SS |
5431 | break; |
5432 | case bp_longjmp: | |
e2e4d78b | 5433 | case bp_longjmp_call_dummy: |
186c406b | 5434 | case bp_exception: |
628fe4e4 | 5435 | this_action = BPSTAT_WHAT_SET_LONGJMP_RESUME; |
e2e4d78b | 5436 | retval.is_longjmp = bptype != bp_exception; |
c906108c SS |
5437 | break; |
5438 | case bp_longjmp_resume: | |
186c406b | 5439 | case bp_exception_resume: |
628fe4e4 | 5440 | this_action = BPSTAT_WHAT_CLEAR_LONGJMP_RESUME; |
186c406b | 5441 | retval.is_longjmp = bptype == bp_longjmp_resume; |
c906108c SS |
5442 | break; |
5443 | case bp_step_resume: | |
5444 | if (bs->stop) | |
628fe4e4 JK |
5445 | this_action = BPSTAT_WHAT_STEP_RESUME; |
5446 | else | |
c906108c | 5447 | { |
628fe4e4 JK |
5448 | /* It is for the wrong frame. */ |
5449 | this_action = BPSTAT_WHAT_SINGLE; | |
c906108c | 5450 | } |
c906108c | 5451 | break; |
2c03e5be PA |
5452 | case bp_hp_step_resume: |
5453 | if (bs->stop) | |
5454 | this_action = BPSTAT_WHAT_HP_STEP_RESUME; | |
5455 | else | |
5456 | { | |
5457 | /* It is for the wrong frame. */ | |
5458 | this_action = BPSTAT_WHAT_SINGLE; | |
5459 | } | |
5460 | break; | |
c906108c | 5461 | case bp_watchpoint_scope: |
c4093a6a | 5462 | case bp_thread_event: |
1900040c | 5463 | case bp_overlay_event: |
0fd8e87f | 5464 | case bp_longjmp_master: |
aa7d318d | 5465 | case bp_std_terminate_master: |
186c406b | 5466 | case bp_exception_master: |
628fe4e4 | 5467 | this_action = BPSTAT_WHAT_SINGLE; |
c4093a6a | 5468 | break; |
ce78b96d | 5469 | case bp_catchpoint: |
c5aa993b JM |
5470 | if (bs->stop) |
5471 | { | |
5472 | if (bs->print) | |
628fe4e4 | 5473 | this_action = BPSTAT_WHAT_STOP_NOISY; |
c5aa993b | 5474 | else |
628fe4e4 | 5475 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c5aa993b JM |
5476 | } |
5477 | else | |
628fe4e4 JK |
5478 | { |
5479 | /* There was a catchpoint, but we're not stopping. | |
5480 | This requires no further action. */ | |
5481 | } | |
5482 | break; | |
628fe4e4 JK |
5483 | case bp_jit_event: |
5484 | jit_event = 1; | |
5485 | this_action = BPSTAT_WHAT_SINGLE; | |
c5aa993b | 5486 | break; |
c906108c | 5487 | case bp_call_dummy: |
53a5351d JM |
5488 | /* Make sure the action is stop (silent or noisy), |
5489 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5490 | retval.call_dummy = STOP_STACK_DUMMY; |
628fe4e4 | 5491 | this_action = BPSTAT_WHAT_STOP_SILENT; |
aa7d318d TT |
5492 | break; |
5493 | case bp_std_terminate: | |
5494 | /* Make sure the action is stop (silent or noisy), | |
5495 | so infrun.c pops the dummy frame. */ | |
aa7d318d | 5496 | retval.call_dummy = STOP_STD_TERMINATE; |
628fe4e4 | 5497 | this_action = BPSTAT_WHAT_STOP_SILENT; |
c906108c | 5498 | break; |
1042e4c0 | 5499 | case bp_tracepoint: |
7a697b8d | 5500 | case bp_fast_tracepoint: |
0fb4aa4b | 5501 | case bp_static_tracepoint: |
1042e4c0 SS |
5502 | /* Tracepoint hits should not be reported back to GDB, and |
5503 | if one got through somehow, it should have been filtered | |
5504 | out already. */ | |
5505 | internal_error (__FILE__, __LINE__, | |
7a697b8d | 5506 | _("bpstat_what: tracepoint encountered")); |
0e30163f JK |
5507 | break; |
5508 | case bp_gnu_ifunc_resolver: | |
5509 | /* Step over it (and insert bp_gnu_ifunc_resolver_return). */ | |
5510 | this_action = BPSTAT_WHAT_SINGLE; | |
5511 | break; | |
5512 | case bp_gnu_ifunc_resolver_return: | |
5513 | /* The breakpoint will be removed, execution will restart from the | |
5514 | PC of the former breakpoint. */ | |
5515 | this_action = BPSTAT_WHAT_KEEP_CHECKING; | |
5516 | break; | |
e7e0cddf SS |
5517 | |
5518 | case bp_dprintf: | |
a11cfd87 HZ |
5519 | if (bs->stop) |
5520 | this_action = BPSTAT_WHAT_STOP_SILENT; | |
5521 | else | |
5522 | this_action = BPSTAT_WHAT_SINGLE; | |
e7e0cddf SS |
5523 | break; |
5524 | ||
628fe4e4 JK |
5525 | default: |
5526 | internal_error (__FILE__, __LINE__, | |
5527 | _("bpstat_what: unhandled bptype %d"), (int) bptype); | |
c906108c | 5528 | } |
628fe4e4 JK |
5529 | |
5530 | retval.main_action = max (retval.main_action, this_action); | |
c906108c | 5531 | } |
628fe4e4 | 5532 | |
0e30163f JK |
5533 | /* These operations may affect the bs->breakpoint_at state so they are |
5534 | delayed after MAIN_ACTION is decided above. */ | |
5535 | ||
628fe4e4 JK |
5536 | if (jit_event) |
5537 | { | |
5538 | if (debug_infrun) | |
5539 | fprintf_unfiltered (gdb_stdlog, "bpstat_what: bp_jit_event\n"); | |
5540 | ||
5541 | handle_jit_event (); | |
5542 | } | |
5543 | ||
0e30163f JK |
5544 | for (bs = bs_head; bs != NULL; bs = bs->next) |
5545 | { | |
5546 | struct breakpoint *b = bs->breakpoint_at; | |
5547 | ||
5548 | if (b == NULL) | |
5549 | continue; | |
5550 | switch (b->type) | |
5551 | { | |
5552 | case bp_gnu_ifunc_resolver: | |
5553 | gnu_ifunc_resolver_stop (b); | |
5554 | break; | |
5555 | case bp_gnu_ifunc_resolver_return: | |
5556 | gnu_ifunc_resolver_return_stop (b); | |
5557 | break; | |
5558 | } | |
5559 | } | |
5560 | ||
c906108c SS |
5561 | return retval; |
5562 | } | |
5563 | ||
5564 | /* Nonzero if we should step constantly (e.g. watchpoints on machines | |
5565 | without hardware support). This isn't related to a specific bpstat, | |
5566 | just to things like whether watchpoints are set. */ | |
5567 | ||
c5aa993b | 5568 | int |
fba45db2 | 5569 | bpstat_should_step (void) |
c906108c SS |
5570 | { |
5571 | struct breakpoint *b; | |
cc59ec59 | 5572 | |
c906108c | 5573 | ALL_BREAKPOINTS (b) |
717a8278 | 5574 | if (breakpoint_enabled (b) && b->type == bp_watchpoint && b->loc != NULL) |
3172dc30 | 5575 | return 1; |
c906108c SS |
5576 | return 0; |
5577 | } | |
5578 | ||
67822962 PA |
5579 | int |
5580 | bpstat_causes_stop (bpstat bs) | |
5581 | { | |
5582 | for (; bs != NULL; bs = bs->next) | |
5583 | if (bs->stop) | |
5584 | return 1; | |
5585 | ||
5586 | return 0; | |
5587 | } | |
5588 | ||
c906108c | 5589 | \f |
c5aa993b | 5590 | |
170b53b2 UW |
5591 | /* Compute a string of spaces suitable to indent the next line |
5592 | so it starts at the position corresponding to the table column | |
5593 | named COL_NAME in the currently active table of UIOUT. */ | |
5594 | ||
5595 | static char * | |
5596 | wrap_indent_at_field (struct ui_out *uiout, const char *col_name) | |
5597 | { | |
5598 | static char wrap_indent[80]; | |
5599 | int i, total_width, width, align; | |
5600 | char *text; | |
5601 | ||
5602 | total_width = 0; | |
5603 | for (i = 1; ui_out_query_field (uiout, i, &width, &align, &text); i++) | |
5604 | { | |
5605 | if (strcmp (text, col_name) == 0) | |
5606 | { | |
5607 | gdb_assert (total_width < sizeof wrap_indent); | |
5608 | memset (wrap_indent, ' ', total_width); | |
5609 | wrap_indent[total_width] = 0; | |
5610 | ||
5611 | return wrap_indent; | |
5612 | } | |
5613 | ||
5614 | total_width += width + 1; | |
5615 | } | |
5616 | ||
5617 | return NULL; | |
5618 | } | |
5619 | ||
b775012e LM |
5620 | /* Determine if the locations of this breakpoint will have their conditions |
5621 | evaluated by the target, host or a mix of both. Returns the following: | |
5622 | ||
5623 | "host": Host evals condition. | |
5624 | "host or target": Host or Target evals condition. | |
5625 | "target": Target evals condition. | |
5626 | */ | |
5627 | ||
5628 | static const char * | |
5629 | bp_condition_evaluator (struct breakpoint *b) | |
5630 | { | |
5631 | struct bp_location *bl; | |
5632 | char host_evals = 0; | |
5633 | char target_evals = 0; | |
5634 | ||
5635 | if (!b) | |
5636 | return NULL; | |
5637 | ||
5638 | if (!is_breakpoint (b)) | |
5639 | return NULL; | |
5640 | ||
5641 | if (gdb_evaluates_breakpoint_condition_p () | |
5642 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5643 | return condition_evaluation_host; | |
5644 | ||
5645 | for (bl = b->loc; bl; bl = bl->next) | |
5646 | { | |
5647 | if (bl->cond_bytecode) | |
5648 | target_evals++; | |
5649 | else | |
5650 | host_evals++; | |
5651 | } | |
5652 | ||
5653 | if (host_evals && target_evals) | |
5654 | return condition_evaluation_both; | |
5655 | else if (target_evals) | |
5656 | return condition_evaluation_target; | |
5657 | else | |
5658 | return condition_evaluation_host; | |
5659 | } | |
5660 | ||
5661 | /* Determine the breakpoint location's condition evaluator. This is | |
5662 | similar to bp_condition_evaluator, but for locations. */ | |
5663 | ||
5664 | static const char * | |
5665 | bp_location_condition_evaluator (struct bp_location *bl) | |
5666 | { | |
5667 | if (bl && !is_breakpoint (bl->owner)) | |
5668 | return NULL; | |
5669 | ||
5670 | if (gdb_evaluates_breakpoint_condition_p () | |
5671 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
5672 | return condition_evaluation_host; | |
5673 | ||
5674 | if (bl && bl->cond_bytecode) | |
5675 | return condition_evaluation_target; | |
5676 | else | |
5677 | return condition_evaluation_host; | |
5678 | } | |
5679 | ||
859825b8 JK |
5680 | /* Print the LOC location out of the list of B->LOC locations. */ |
5681 | ||
170b53b2 UW |
5682 | static void |
5683 | print_breakpoint_location (struct breakpoint *b, | |
5684 | struct bp_location *loc) | |
0d381245 | 5685 | { |
79a45e25 | 5686 | struct ui_out *uiout = current_uiout; |
6c95b8df PA |
5687 | struct cleanup *old_chain = save_current_program_space (); |
5688 | ||
859825b8 JK |
5689 | if (loc != NULL && loc->shlib_disabled) |
5690 | loc = NULL; | |
5691 | ||
6c95b8df PA |
5692 | if (loc != NULL) |
5693 | set_current_program_space (loc->pspace); | |
5694 | ||
56435ebe TT |
5695 | if (b->display_canonical) |
5696 | ui_out_field_string (uiout, "what", b->addr_string); | |
2f202fde | 5697 | else if (loc && loc->symtab) |
0d381245 VP |
5698 | { |
5699 | struct symbol *sym | |
5700 | = find_pc_sect_function (loc->address, loc->section); | |
5701 | if (sym) | |
5702 | { | |
5703 | ui_out_text (uiout, "in "); | |
5704 | ui_out_field_string (uiout, "func", | |
5705 | SYMBOL_PRINT_NAME (sym)); | |
170b53b2 UW |
5706 | ui_out_text (uiout, " "); |
5707 | ui_out_wrap_hint (uiout, wrap_indent_at_field (uiout, "what")); | |
5708 | ui_out_text (uiout, "at "); | |
0d381245 | 5709 | } |
05cba821 JK |
5710 | ui_out_field_string (uiout, "file", |
5711 | symtab_to_filename_for_display (loc->symtab)); | |
0d381245 | 5712 | ui_out_text (uiout, ":"); |
05cba821 | 5713 | |
0d381245 | 5714 | if (ui_out_is_mi_like_p (uiout)) |
2f202fde JK |
5715 | ui_out_field_string (uiout, "fullname", |
5716 | symtab_to_fullname (loc->symtab)); | |
0d381245 | 5717 | |
f8eba3c6 | 5718 | ui_out_field_int (uiout, "line", loc->line_number); |
0d381245 | 5719 | } |
859825b8 | 5720 | else if (loc) |
0d381245 | 5721 | { |
f99d8bf4 PA |
5722 | struct ui_file *stb = mem_fileopen (); |
5723 | struct cleanup *stb_chain = make_cleanup_ui_file_delete (stb); | |
170b53b2 | 5724 | |
f99d8bf4 | 5725 | print_address_symbolic (loc->gdbarch, loc->address, stb, |
22e722e1 | 5726 | demangle, ""); |
0d381245 | 5727 | ui_out_field_stream (uiout, "at", stb); |
170b53b2 UW |
5728 | |
5729 | do_cleanups (stb_chain); | |
0d381245 | 5730 | } |
859825b8 JK |
5731 | else |
5732 | ui_out_field_string (uiout, "pending", b->addr_string); | |
6c95b8df | 5733 | |
b775012e LM |
5734 | if (loc && is_breakpoint (b) |
5735 | && breakpoint_condition_evaluation_mode () == condition_evaluation_target | |
5736 | && bp_condition_evaluator (b) == condition_evaluation_both) | |
5737 | { | |
5738 | ui_out_text (uiout, " ("); | |
5739 | ui_out_field_string (uiout, "evaluated-by", | |
5740 | bp_location_condition_evaluator (loc)); | |
5741 | ui_out_text (uiout, ")"); | |
5742 | } | |
5743 | ||
6c95b8df | 5744 | do_cleanups (old_chain); |
0d381245 VP |
5745 | } |
5746 | ||
269b11a2 PA |
5747 | static const char * |
5748 | bptype_string (enum bptype type) | |
c906108c | 5749 | { |
c4093a6a JM |
5750 | struct ep_type_description |
5751 | { | |
5752 | enum bptype type; | |
5753 | char *description; | |
5754 | }; | |
5755 | static struct ep_type_description bptypes[] = | |
c906108c | 5756 | { |
c5aa993b JM |
5757 | {bp_none, "?deleted?"}, |
5758 | {bp_breakpoint, "breakpoint"}, | |
c906108c | 5759 | {bp_hardware_breakpoint, "hw breakpoint"}, |
c5aa993b JM |
5760 | {bp_until, "until"}, |
5761 | {bp_finish, "finish"}, | |
5762 | {bp_watchpoint, "watchpoint"}, | |
c906108c | 5763 | {bp_hardware_watchpoint, "hw watchpoint"}, |
c5aa993b JM |
5764 | {bp_read_watchpoint, "read watchpoint"}, |
5765 | {bp_access_watchpoint, "acc watchpoint"}, | |
5766 | {bp_longjmp, "longjmp"}, | |
5767 | {bp_longjmp_resume, "longjmp resume"}, | |
e2e4d78b | 5768 | {bp_longjmp_call_dummy, "longjmp for call dummy"}, |
186c406b TT |
5769 | {bp_exception, "exception"}, |
5770 | {bp_exception_resume, "exception resume"}, | |
c5aa993b | 5771 | {bp_step_resume, "step resume"}, |
2c03e5be | 5772 | {bp_hp_step_resume, "high-priority step resume"}, |
c5aa993b JM |
5773 | {bp_watchpoint_scope, "watchpoint scope"}, |
5774 | {bp_call_dummy, "call dummy"}, | |
aa7d318d | 5775 | {bp_std_terminate, "std::terminate"}, |
c5aa993b | 5776 | {bp_shlib_event, "shlib events"}, |
c4093a6a | 5777 | {bp_thread_event, "thread events"}, |
1900040c | 5778 | {bp_overlay_event, "overlay events"}, |
0fd8e87f | 5779 | {bp_longjmp_master, "longjmp master"}, |
aa7d318d | 5780 | {bp_std_terminate_master, "std::terminate master"}, |
186c406b | 5781 | {bp_exception_master, "exception master"}, |
ce78b96d | 5782 | {bp_catchpoint, "catchpoint"}, |
1042e4c0 | 5783 | {bp_tracepoint, "tracepoint"}, |
7a697b8d | 5784 | {bp_fast_tracepoint, "fast tracepoint"}, |
0fb4aa4b | 5785 | {bp_static_tracepoint, "static tracepoint"}, |
e7e0cddf | 5786 | {bp_dprintf, "dprintf"}, |
4efc6507 | 5787 | {bp_jit_event, "jit events"}, |
0e30163f JK |
5788 | {bp_gnu_ifunc_resolver, "STT_GNU_IFUNC resolver"}, |
5789 | {bp_gnu_ifunc_resolver_return, "STT_GNU_IFUNC resolver return"}, | |
c5aa993b | 5790 | }; |
269b11a2 PA |
5791 | |
5792 | if (((int) type >= (sizeof (bptypes) / sizeof (bptypes[0]))) | |
5793 | || ((int) type != bptypes[(int) type].type)) | |
5794 | internal_error (__FILE__, __LINE__, | |
5795 | _("bptypes table does not describe type #%d."), | |
5796 | (int) type); | |
5797 | ||
5798 | return bptypes[(int) type].description; | |
5799 | } | |
5800 | ||
998580f1 MK |
5801 | DEF_VEC_I(int); |
5802 | ||
5803 | /* For MI, output a field named 'thread-groups' with a list as the value. | |
5804 | For CLI, prefix the list with the string 'inf'. */ | |
5805 | ||
5806 | static void | |
5807 | output_thread_groups (struct ui_out *uiout, | |
5808 | const char *field_name, | |
5809 | VEC(int) *inf_num, | |
5810 | int mi_only) | |
5811 | { | |
752eb8b4 | 5812 | struct cleanup *back_to; |
998580f1 MK |
5813 | int is_mi = ui_out_is_mi_like_p (uiout); |
5814 | int inf; | |
5815 | int i; | |
5816 | ||
5817 | /* For backward compatibility, don't display inferiors in CLI unless | |
5818 | there are several. Always display them for MI. */ | |
5819 | if (!is_mi && mi_only) | |
5820 | return; | |
5821 | ||
752eb8b4 TT |
5822 | back_to = make_cleanup_ui_out_list_begin_end (uiout, field_name); |
5823 | ||
998580f1 MK |
5824 | for (i = 0; VEC_iterate (int, inf_num, i, inf); ++i) |
5825 | { | |
5826 | if (is_mi) | |
5827 | { | |
5828 | char mi_group[10]; | |
5829 | ||
5830 | xsnprintf (mi_group, sizeof (mi_group), "i%d", inf); | |
5831 | ui_out_field_string (uiout, NULL, mi_group); | |
5832 | } | |
5833 | else | |
5834 | { | |
5835 | if (i == 0) | |
5836 | ui_out_text (uiout, " inf "); | |
5837 | else | |
5838 | ui_out_text (uiout, ", "); | |
5839 | ||
5840 | ui_out_text (uiout, plongest (inf)); | |
5841 | } | |
5842 | } | |
5843 | ||
5844 | do_cleanups (back_to); | |
5845 | } | |
5846 | ||
269b11a2 PA |
5847 | /* Print B to gdb_stdout. */ |
5848 | ||
5849 | static void | |
5850 | print_one_breakpoint_location (struct breakpoint *b, | |
5851 | struct bp_location *loc, | |
5852 | int loc_number, | |
5853 | struct bp_location **last_loc, | |
269b11a2 PA |
5854 | int allflag) |
5855 | { | |
5856 | struct command_line *l; | |
c2c6d25f | 5857 | static char bpenables[] = "nynny"; |
c906108c | 5858 | |
79a45e25 | 5859 | struct ui_out *uiout = current_uiout; |
0d381245 VP |
5860 | int header_of_multiple = 0; |
5861 | int part_of_multiple = (loc != NULL); | |
79a45b7d TT |
5862 | struct value_print_options opts; |
5863 | ||
5864 | get_user_print_options (&opts); | |
0d381245 VP |
5865 | |
5866 | gdb_assert (!loc || loc_number != 0); | |
4a64f543 MS |
5867 | /* See comment in print_one_breakpoint concerning treatment of |
5868 | breakpoints with single disabled location. */ | |
0d381245 VP |
5869 | if (loc == NULL |
5870 | && (b->loc != NULL | |
5871 | && (b->loc->next != NULL || !b->loc->enabled))) | |
5872 | header_of_multiple = 1; | |
5873 | if (loc == NULL) | |
5874 | loc = b->loc; | |
5875 | ||
c4093a6a JM |
5876 | annotate_record (); |
5877 | ||
5878 | /* 1 */ | |
5879 | annotate_field (0); | |
0d381245 VP |
5880 | if (part_of_multiple) |
5881 | { | |
5882 | char *formatted; | |
0c6773c1 | 5883 | formatted = xstrprintf ("%d.%d", b->number, loc_number); |
0d381245 VP |
5884 | ui_out_field_string (uiout, "number", formatted); |
5885 | xfree (formatted); | |
5886 | } | |
5887 | else | |
5888 | { | |
5889 | ui_out_field_int (uiout, "number", b->number); | |
5890 | } | |
c4093a6a JM |
5891 | |
5892 | /* 2 */ | |
5893 | annotate_field (1); | |
0d381245 VP |
5894 | if (part_of_multiple) |
5895 | ui_out_field_skip (uiout, "type"); | |
269b11a2 PA |
5896 | else |
5897 | ui_out_field_string (uiout, "type", bptype_string (b->type)); | |
c4093a6a JM |
5898 | |
5899 | /* 3 */ | |
5900 | annotate_field (2); | |
0d381245 VP |
5901 | if (part_of_multiple) |
5902 | ui_out_field_skip (uiout, "disp"); | |
5903 | else | |
2cec12e5 | 5904 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); |
0d381245 | 5905 | |
c4093a6a JM |
5906 | |
5907 | /* 4 */ | |
5908 | annotate_field (3); | |
0d381245 | 5909 | if (part_of_multiple) |
54e52265 | 5910 | ui_out_field_string (uiout, "enabled", loc->enabled ? "y" : "n"); |
0d381245 | 5911 | else |
4a64f543 MS |
5912 | ui_out_field_fmt (uiout, "enabled", "%c", |
5913 | bpenables[(int) b->enable_state]); | |
54e52265 | 5914 | ui_out_spaces (uiout, 2); |
0d381245 | 5915 | |
c4093a6a JM |
5916 | |
5917 | /* 5 and 6 */ | |
3086aeae | 5918 | if (b->ops != NULL && b->ops->print_one != NULL) |
0d381245 | 5919 | { |
4a64f543 MS |
5920 | /* Although the print_one can possibly print all locations, |
5921 | calling it here is not likely to get any nice result. So, | |
5922 | make sure there's just one location. */ | |
0d381245 | 5923 | gdb_assert (b->loc == NULL || b->loc->next == NULL); |
a6d9a66e | 5924 | b->ops->print_one (b, last_loc); |
0d381245 | 5925 | } |
3086aeae DJ |
5926 | else |
5927 | switch (b->type) | |
5928 | { | |
5929 | case bp_none: | |
5930 | internal_error (__FILE__, __LINE__, | |
e2e0b3e5 | 5931 | _("print_one_breakpoint: bp_none encountered\n")); |
3086aeae | 5932 | break; |
c906108c | 5933 | |
3086aeae DJ |
5934 | case bp_watchpoint: |
5935 | case bp_hardware_watchpoint: | |
5936 | case bp_read_watchpoint: | |
5937 | case bp_access_watchpoint: | |
3a5c3e22 PA |
5938 | { |
5939 | struct watchpoint *w = (struct watchpoint *) b; | |
5940 | ||
5941 | /* Field 4, the address, is omitted (which makes the columns | |
5942 | not line up too nicely with the headers, but the effect | |
5943 | is relatively readable). */ | |
5944 | if (opts.addressprint) | |
5945 | ui_out_field_skip (uiout, "addr"); | |
5946 | annotate_field (5); | |
5947 | ui_out_field_string (uiout, "what", w->exp_string); | |
5948 | } | |
3086aeae DJ |
5949 | break; |
5950 | ||
3086aeae DJ |
5951 | case bp_breakpoint: |
5952 | case bp_hardware_breakpoint: | |
5953 | case bp_until: | |
5954 | case bp_finish: | |
5955 | case bp_longjmp: | |
5956 | case bp_longjmp_resume: | |
e2e4d78b | 5957 | case bp_longjmp_call_dummy: |
186c406b TT |
5958 | case bp_exception: |
5959 | case bp_exception_resume: | |
3086aeae | 5960 | case bp_step_resume: |
2c03e5be | 5961 | case bp_hp_step_resume: |
3086aeae DJ |
5962 | case bp_watchpoint_scope: |
5963 | case bp_call_dummy: | |
aa7d318d | 5964 | case bp_std_terminate: |
3086aeae DJ |
5965 | case bp_shlib_event: |
5966 | case bp_thread_event: | |
5967 | case bp_overlay_event: | |
0fd8e87f | 5968 | case bp_longjmp_master: |
aa7d318d | 5969 | case bp_std_terminate_master: |
186c406b | 5970 | case bp_exception_master: |
1042e4c0 | 5971 | case bp_tracepoint: |
7a697b8d | 5972 | case bp_fast_tracepoint: |
0fb4aa4b | 5973 | case bp_static_tracepoint: |
e7e0cddf | 5974 | case bp_dprintf: |
4efc6507 | 5975 | case bp_jit_event: |
0e30163f JK |
5976 | case bp_gnu_ifunc_resolver: |
5977 | case bp_gnu_ifunc_resolver_return: | |
79a45b7d | 5978 | if (opts.addressprint) |
3086aeae DJ |
5979 | { |
5980 | annotate_field (4); | |
54e52265 | 5981 | if (header_of_multiple) |
0d381245 | 5982 | ui_out_field_string (uiout, "addr", "<MULTIPLE>"); |
e9bbd7c5 | 5983 | else if (b->loc == NULL || loc->shlib_disabled) |
54e52265 | 5984 | ui_out_field_string (uiout, "addr", "<PENDING>"); |
0101ce28 | 5985 | else |
5af949e3 UW |
5986 | ui_out_field_core_addr (uiout, "addr", |
5987 | loc->gdbarch, loc->address); | |
3086aeae DJ |
5988 | } |
5989 | annotate_field (5); | |
0d381245 | 5990 | if (!header_of_multiple) |
170b53b2 | 5991 | print_breakpoint_location (b, loc); |
0d381245 | 5992 | if (b->loc) |
a6d9a66e | 5993 | *last_loc = b->loc; |
3086aeae DJ |
5994 | break; |
5995 | } | |
c906108c | 5996 | |
6c95b8df | 5997 | |
998580f1 | 5998 | if (loc != NULL && !header_of_multiple) |
6c95b8df PA |
5999 | { |
6000 | struct inferior *inf; | |
998580f1 MK |
6001 | VEC(int) *inf_num = NULL; |
6002 | int mi_only = 1; | |
6c95b8df | 6003 | |
998580f1 | 6004 | ALL_INFERIORS (inf) |
6c95b8df PA |
6005 | { |
6006 | if (inf->pspace == loc->pspace) | |
998580f1 | 6007 | VEC_safe_push (int, inf_num, inf->num); |
6c95b8df | 6008 | } |
998580f1 MK |
6009 | |
6010 | /* For backward compatibility, don't display inferiors in CLI unless | |
6011 | there are several. Always display for MI. */ | |
6012 | if (allflag | |
6013 | || (!gdbarch_has_global_breakpoints (target_gdbarch ()) | |
6014 | && (number_of_program_spaces () > 1 | |
6015 | || number_of_inferiors () > 1) | |
6016 | /* LOC is for existing B, it cannot be in | |
6017 | moribund_locations and thus having NULL OWNER. */ | |
6018 | && loc->owner->type != bp_catchpoint)) | |
6019 | mi_only = 0; | |
6020 | output_thread_groups (uiout, "thread-groups", inf_num, mi_only); | |
6021 | VEC_free (int, inf_num); | |
6c95b8df PA |
6022 | } |
6023 | ||
4a306c9a | 6024 | if (!part_of_multiple) |
c4093a6a | 6025 | { |
4a306c9a JB |
6026 | if (b->thread != -1) |
6027 | { | |
6028 | /* FIXME: This seems to be redundant and lost here; see the | |
4a64f543 | 6029 | "stop only in" line a little further down. */ |
4a306c9a JB |
6030 | ui_out_text (uiout, " thread "); |
6031 | ui_out_field_int (uiout, "thread", b->thread); | |
6032 | } | |
6033 | else if (b->task != 0) | |
6034 | { | |
6035 | ui_out_text (uiout, " task "); | |
6036 | ui_out_field_int (uiout, "task", b->task); | |
6037 | } | |
c4093a6a | 6038 | } |
f1310107 | 6039 | |
8b93c638 | 6040 | ui_out_text (uiout, "\n"); |
f1310107 | 6041 | |
348d480f | 6042 | if (!part_of_multiple) |
f1310107 TJB |
6043 | b->ops->print_one_detail (b, uiout); |
6044 | ||
0d381245 | 6045 | if (part_of_multiple && frame_id_p (b->frame_id)) |
c4093a6a JM |
6046 | { |
6047 | annotate_field (6); | |
8b93c638 | 6048 | ui_out_text (uiout, "\tstop only in stack frame at "); |
e5dd4106 | 6049 | /* FIXME: cagney/2002-12-01: Shouldn't be poking around inside |
818dd999 | 6050 | the frame ID. */ |
5af949e3 UW |
6051 | ui_out_field_core_addr (uiout, "frame", |
6052 | b->gdbarch, b->frame_id.stack_addr); | |
8b93c638 | 6053 | ui_out_text (uiout, "\n"); |
c4093a6a JM |
6054 | } |
6055 | ||
28010a5d | 6056 | if (!part_of_multiple && b->cond_string) |
c4093a6a JM |
6057 | { |
6058 | annotate_field (7); | |
d77f58be | 6059 | if (is_tracepoint (b)) |
1042e4c0 SS |
6060 | ui_out_text (uiout, "\ttrace only if "); |
6061 | else | |
6062 | ui_out_text (uiout, "\tstop only if "); | |
0101ce28 | 6063 | ui_out_field_string (uiout, "cond", b->cond_string); |
b775012e LM |
6064 | |
6065 | /* Print whether the target is doing the breakpoint's condition | |
6066 | evaluation. If GDB is doing the evaluation, don't print anything. */ | |
6067 | if (is_breakpoint (b) | |
6068 | && breakpoint_condition_evaluation_mode () | |
6069 | == condition_evaluation_target) | |
6070 | { | |
6071 | ui_out_text (uiout, " ("); | |
6072 | ui_out_field_string (uiout, "evaluated-by", | |
6073 | bp_condition_evaluator (b)); | |
6074 | ui_out_text (uiout, " evals)"); | |
6075 | } | |
0101ce28 JJ |
6076 | ui_out_text (uiout, "\n"); |
6077 | } | |
6078 | ||
0d381245 | 6079 | if (!part_of_multiple && b->thread != -1) |
c4093a6a | 6080 | { |
4a64f543 | 6081 | /* FIXME should make an annotation for this. */ |
8b93c638 JM |
6082 | ui_out_text (uiout, "\tstop only in thread "); |
6083 | ui_out_field_int (uiout, "thread", b->thread); | |
6084 | ui_out_text (uiout, "\n"); | |
c4093a6a JM |
6085 | } |
6086 | ||
556ec64d YQ |
6087 | if (!part_of_multiple) |
6088 | { | |
6089 | if (b->hit_count) | |
31f56a27 YQ |
6090 | { |
6091 | /* FIXME should make an annotation for this. */ | |
6092 | if (is_catchpoint (b)) | |
6093 | ui_out_text (uiout, "\tcatchpoint"); | |
6094 | else if (is_tracepoint (b)) | |
6095 | ui_out_text (uiout, "\ttracepoint"); | |
6096 | else | |
6097 | ui_out_text (uiout, "\tbreakpoint"); | |
6098 | ui_out_text (uiout, " already hit "); | |
6099 | ui_out_field_int (uiout, "times", b->hit_count); | |
6100 | if (b->hit_count == 1) | |
6101 | ui_out_text (uiout, " time\n"); | |
6102 | else | |
6103 | ui_out_text (uiout, " times\n"); | |
6104 | } | |
556ec64d YQ |
6105 | else |
6106 | { | |
31f56a27 YQ |
6107 | /* Output the count also if it is zero, but only if this is mi. */ |
6108 | if (ui_out_is_mi_like_p (uiout)) | |
6109 | ui_out_field_int (uiout, "times", b->hit_count); | |
556ec64d YQ |
6110 | } |
6111 | } | |
8b93c638 | 6112 | |
0d381245 | 6113 | if (!part_of_multiple && b->ignore_count) |
c4093a6a JM |
6114 | { |
6115 | annotate_field (8); | |
8b93c638 JM |
6116 | ui_out_text (uiout, "\tignore next "); |
6117 | ui_out_field_int (uiout, "ignore", b->ignore_count); | |
6118 | ui_out_text (uiout, " hits\n"); | |
c4093a6a | 6119 | } |
059fb39f | 6120 | |
816338b5 SS |
6121 | /* Note that an enable count of 1 corresponds to "enable once" |
6122 | behavior, which is reported by the combination of enablement and | |
6123 | disposition, so we don't need to mention it here. */ | |
6124 | if (!part_of_multiple && b->enable_count > 1) | |
6125 | { | |
6126 | annotate_field (8); | |
6127 | ui_out_text (uiout, "\tdisable after "); | |
6128 | /* Tweak the wording to clarify that ignore and enable counts | |
6129 | are distinct, and have additive effect. */ | |
6130 | if (b->ignore_count) | |
6131 | ui_out_text (uiout, "additional "); | |
6132 | else | |
6133 | ui_out_text (uiout, "next "); | |
6134 | ui_out_field_int (uiout, "enable", b->enable_count); | |
6135 | ui_out_text (uiout, " hits\n"); | |
6136 | } | |
6137 | ||
f196051f SS |
6138 | if (!part_of_multiple && is_tracepoint (b)) |
6139 | { | |
6140 | struct tracepoint *tp = (struct tracepoint *) b; | |
6141 | ||
6142 | if (tp->traceframe_usage) | |
6143 | { | |
6144 | ui_out_text (uiout, "\ttrace buffer usage "); | |
6145 | ui_out_field_int (uiout, "traceframe-usage", tp->traceframe_usage); | |
6146 | ui_out_text (uiout, " bytes\n"); | |
6147 | } | |
6148 | } | |
d3ce09f5 | 6149 | |
9add0f1b | 6150 | l = b->commands ? b->commands->commands : NULL; |
059fb39f | 6151 | if (!part_of_multiple && l) |
c4093a6a | 6152 | { |
3b31d625 EZ |
6153 | struct cleanup *script_chain; |
6154 | ||
c4093a6a | 6155 | annotate_field (9); |
3b31d625 | 6156 | script_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "script"); |
8b93c638 | 6157 | print_command_lines (uiout, l, 4); |
3b31d625 | 6158 | do_cleanups (script_chain); |
c4093a6a | 6159 | } |
d24317b4 | 6160 | |
d9b3f62e | 6161 | if (is_tracepoint (b)) |
1042e4c0 | 6162 | { |
d9b3f62e PA |
6163 | struct tracepoint *t = (struct tracepoint *) b; |
6164 | ||
6165 | if (!part_of_multiple && t->pass_count) | |
6166 | { | |
6167 | annotate_field (10); | |
6168 | ui_out_text (uiout, "\tpass count "); | |
6169 | ui_out_field_int (uiout, "pass", t->pass_count); | |
6170 | ui_out_text (uiout, " \n"); | |
6171 | } | |
f2a8bc8a YQ |
6172 | |
6173 | /* Don't display it when tracepoint or tracepoint location is | |
6174 | pending. */ | |
6175 | if (!header_of_multiple && loc != NULL && !loc->shlib_disabled) | |
6176 | { | |
6177 | annotate_field (11); | |
6178 | ||
6179 | if (ui_out_is_mi_like_p (uiout)) | |
6180 | ui_out_field_string (uiout, "installed", | |
6181 | loc->inserted ? "y" : "n"); | |
6182 | else | |
6183 | { | |
6184 | if (loc->inserted) | |
6185 | ui_out_text (uiout, "\t"); | |
6186 | else | |
6187 | ui_out_text (uiout, "\tnot "); | |
6188 | ui_out_text (uiout, "installed on target\n"); | |
6189 | } | |
6190 | } | |
1042e4c0 SS |
6191 | } |
6192 | ||
d24317b4 VP |
6193 | if (ui_out_is_mi_like_p (uiout) && !part_of_multiple) |
6194 | { | |
3a5c3e22 PA |
6195 | if (is_watchpoint (b)) |
6196 | { | |
6197 | struct watchpoint *w = (struct watchpoint *) b; | |
6198 | ||
6199 | ui_out_field_string (uiout, "original-location", w->exp_string); | |
6200 | } | |
6201 | else if (b->addr_string) | |
d24317b4 | 6202 | ui_out_field_string (uiout, "original-location", b->addr_string); |
d24317b4 | 6203 | } |
c4093a6a | 6204 | } |
c5aa993b | 6205 | |
0d381245 VP |
6206 | static void |
6207 | print_one_breakpoint (struct breakpoint *b, | |
4a64f543 | 6208 | struct bp_location **last_loc, |
6c95b8df | 6209 | int allflag) |
0d381245 | 6210 | { |
8d3788bd | 6211 | struct cleanup *bkpt_chain; |
79a45e25 | 6212 | struct ui_out *uiout = current_uiout; |
8d3788bd VP |
6213 | |
6214 | bkpt_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "bkpt"); | |
6215 | ||
12c5a436 | 6216 | print_one_breakpoint_location (b, NULL, 0, last_loc, allflag); |
8d3788bd | 6217 | do_cleanups (bkpt_chain); |
0d381245 VP |
6218 | |
6219 | /* If this breakpoint has custom print function, | |
6220 | it's already printed. Otherwise, print individual | |
6221 | locations, if any. */ | |
6222 | if (b->ops == NULL || b->ops->print_one == NULL) | |
6223 | { | |
4a64f543 MS |
6224 | /* If breakpoint has a single location that is disabled, we |
6225 | print it as if it had several locations, since otherwise it's | |
6226 | hard to represent "breakpoint enabled, location disabled" | |
6227 | situation. | |
6228 | ||
6229 | Note that while hardware watchpoints have several locations | |
a3be7890 | 6230 | internally, that's not a property exposed to user. */ |
0d381245 | 6231 | if (b->loc |
a5606eee | 6232 | && !is_hardware_watchpoint (b) |
8d3788bd | 6233 | && (b->loc->next || !b->loc->enabled)) |
0d381245 VP |
6234 | { |
6235 | struct bp_location *loc; | |
6236 | int n = 1; | |
8d3788bd | 6237 | |
0d381245 | 6238 | for (loc = b->loc; loc; loc = loc->next, ++n) |
8d3788bd VP |
6239 | { |
6240 | struct cleanup *inner2 = | |
6241 | make_cleanup_ui_out_tuple_begin_end (uiout, NULL); | |
6242 | print_one_breakpoint_location (b, loc, n, last_loc, allflag); | |
6243 | do_cleanups (inner2); | |
6244 | } | |
0d381245 VP |
6245 | } |
6246 | } | |
6247 | } | |
6248 | ||
a6d9a66e UW |
6249 | static int |
6250 | breakpoint_address_bits (struct breakpoint *b) | |
6251 | { | |
6252 | int print_address_bits = 0; | |
6253 | struct bp_location *loc; | |
6254 | ||
6255 | for (loc = b->loc; loc; loc = loc->next) | |
6256 | { | |
c7437ca6 PA |
6257 | int addr_bit; |
6258 | ||
6259 | /* Software watchpoints that aren't watching memory don't have | |
6260 | an address to print. */ | |
6261 | if (b->type == bp_watchpoint && loc->watchpoint_type == -1) | |
6262 | continue; | |
6263 | ||
6264 | addr_bit = gdbarch_addr_bit (loc->gdbarch); | |
a6d9a66e UW |
6265 | if (addr_bit > print_address_bits) |
6266 | print_address_bits = addr_bit; | |
6267 | } | |
6268 | ||
6269 | return print_address_bits; | |
6270 | } | |
0d381245 | 6271 | |
c4093a6a JM |
6272 | struct captured_breakpoint_query_args |
6273 | { | |
6274 | int bnum; | |
6275 | }; | |
c5aa993b | 6276 | |
c4093a6a | 6277 | static int |
2b65245e | 6278 | do_captured_breakpoint_query (struct ui_out *uiout, void *data) |
c4093a6a JM |
6279 | { |
6280 | struct captured_breakpoint_query_args *args = data; | |
52f0bd74 | 6281 | struct breakpoint *b; |
a6d9a66e | 6282 | struct bp_location *dummy_loc = NULL; |
cc59ec59 | 6283 | |
c4093a6a JM |
6284 | ALL_BREAKPOINTS (b) |
6285 | { | |
6286 | if (args->bnum == b->number) | |
c5aa993b | 6287 | { |
12c5a436 | 6288 | print_one_breakpoint (b, &dummy_loc, 0); |
c4093a6a | 6289 | return GDB_RC_OK; |
c5aa993b | 6290 | } |
c4093a6a JM |
6291 | } |
6292 | return GDB_RC_NONE; | |
6293 | } | |
c5aa993b | 6294 | |
c4093a6a | 6295 | enum gdb_rc |
4a64f543 MS |
6296 | gdb_breakpoint_query (struct ui_out *uiout, int bnum, |
6297 | char **error_message) | |
c4093a6a JM |
6298 | { |
6299 | struct captured_breakpoint_query_args args; | |
cc59ec59 | 6300 | |
c4093a6a JM |
6301 | args.bnum = bnum; |
6302 | /* For the moment we don't trust print_one_breakpoint() to not throw | |
4a64f543 | 6303 | an error. */ |
b0b13bb4 DJ |
6304 | if (catch_exceptions_with_msg (uiout, do_captured_breakpoint_query, &args, |
6305 | error_message, RETURN_MASK_ALL) < 0) | |
6306 | return GDB_RC_FAIL; | |
6307 | else | |
6308 | return GDB_RC_OK; | |
c4093a6a | 6309 | } |
c5aa993b | 6310 | |
09d682a4 TT |
6311 | /* Return true if this breakpoint was set by the user, false if it is |
6312 | internal or momentary. */ | |
6313 | ||
6314 | int | |
6315 | user_breakpoint_p (struct breakpoint *b) | |
6316 | { | |
46c6471b | 6317 | return b->number > 0; |
09d682a4 TT |
6318 | } |
6319 | ||
7f3b0473 | 6320 | /* Print information on user settable breakpoint (watchpoint, etc) |
d77f58be SS |
6321 | number BNUM. If BNUM is -1 print all user-settable breakpoints. |
6322 | If ALLFLAG is non-zero, include non-user-settable breakpoints. If | |
6323 | FILTER is non-NULL, call it on each breakpoint and only include the | |
6324 | ones for which it returns non-zero. Return the total number of | |
6325 | breakpoints listed. */ | |
c906108c | 6326 | |
d77f58be | 6327 | static int |
e5a67952 | 6328 | breakpoint_1 (char *args, int allflag, |
4a64f543 | 6329 | int (*filter) (const struct breakpoint *)) |
c4093a6a | 6330 | { |
52f0bd74 | 6331 | struct breakpoint *b; |
a6d9a66e | 6332 | struct bp_location *last_loc = NULL; |
7f3b0473 | 6333 | int nr_printable_breakpoints; |
3b31d625 | 6334 | struct cleanup *bkpttbl_chain; |
79a45b7d | 6335 | struct value_print_options opts; |
a6d9a66e | 6336 | int print_address_bits = 0; |
269b11a2 | 6337 | int print_type_col_width = 14; |
79a45e25 | 6338 | struct ui_out *uiout = current_uiout; |
269b11a2 | 6339 | |
79a45b7d TT |
6340 | get_user_print_options (&opts); |
6341 | ||
4a64f543 MS |
6342 | /* Compute the number of rows in the table, as well as the size |
6343 | required for address fields. */ | |
7f3b0473 AC |
6344 | nr_printable_breakpoints = 0; |
6345 | ALL_BREAKPOINTS (b) | |
e5a67952 MS |
6346 | { |
6347 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6348 | if (filter && !filter (b)) | |
6349 | continue; | |
6350 | ||
6351 | /* If we have an "args" string, it is a list of breakpoints to | |
6352 | accept. Skip the others. */ | |
6353 | if (args != NULL && *args != '\0') | |
6354 | { | |
6355 | if (allflag && parse_and_eval_long (args) != b->number) | |
6356 | continue; | |
6357 | if (!allflag && !number_is_in_list (args, b->number)) | |
6358 | continue; | |
6359 | } | |
269b11a2 | 6360 | |
e5a67952 MS |
6361 | if (allflag || user_breakpoint_p (b)) |
6362 | { | |
6363 | int addr_bit, type_len; | |
a6d9a66e | 6364 | |
e5a67952 MS |
6365 | addr_bit = breakpoint_address_bits (b); |
6366 | if (addr_bit > print_address_bits) | |
6367 | print_address_bits = addr_bit; | |
269b11a2 | 6368 | |
e5a67952 MS |
6369 | type_len = strlen (bptype_string (b->type)); |
6370 | if (type_len > print_type_col_width) | |
6371 | print_type_col_width = type_len; | |
6372 | ||
6373 | nr_printable_breakpoints++; | |
6374 | } | |
6375 | } | |
7f3b0473 | 6376 | |
79a45b7d | 6377 | if (opts.addressprint) |
3b31d625 | 6378 | bkpttbl_chain |
3e43a32a MS |
6379 | = make_cleanup_ui_out_table_begin_end (uiout, 6, |
6380 | nr_printable_breakpoints, | |
3b31d625 | 6381 | "BreakpointTable"); |
8b93c638 | 6382 | else |
3b31d625 | 6383 | bkpttbl_chain |
3e43a32a MS |
6384 | = make_cleanup_ui_out_table_begin_end (uiout, 5, |
6385 | nr_printable_breakpoints, | |
3b31d625 | 6386 | "BreakpointTable"); |
8b93c638 | 6387 | |
7f3b0473 | 6388 | if (nr_printable_breakpoints > 0) |
d7faa9e7 AC |
6389 | annotate_breakpoints_headers (); |
6390 | if (nr_printable_breakpoints > 0) | |
6391 | annotate_field (0); | |
4a64f543 | 6392 | ui_out_table_header (uiout, 7, ui_left, "number", "Num"); /* 1 */ |
d7faa9e7 AC |
6393 | if (nr_printable_breakpoints > 0) |
6394 | annotate_field (1); | |
269b11a2 | 6395 | ui_out_table_header (uiout, print_type_col_width, ui_left, |
4a64f543 | 6396 | "type", "Type"); /* 2 */ |
d7faa9e7 AC |
6397 | if (nr_printable_breakpoints > 0) |
6398 | annotate_field (2); | |
4a64f543 | 6399 | ui_out_table_header (uiout, 4, ui_left, "disp", "Disp"); /* 3 */ |
d7faa9e7 AC |
6400 | if (nr_printable_breakpoints > 0) |
6401 | annotate_field (3); | |
54e52265 | 6402 | ui_out_table_header (uiout, 3, ui_left, "enabled", "Enb"); /* 4 */ |
79a45b7d | 6403 | if (opts.addressprint) |
e5a67952 MS |
6404 | { |
6405 | if (nr_printable_breakpoints > 0) | |
6406 | annotate_field (4); | |
6407 | if (print_address_bits <= 32) | |
6408 | ui_out_table_header (uiout, 10, ui_left, | |
6409 | "addr", "Address"); /* 5 */ | |
6410 | else | |
6411 | ui_out_table_header (uiout, 18, ui_left, | |
6412 | "addr", "Address"); /* 5 */ | |
6413 | } | |
d7faa9e7 AC |
6414 | if (nr_printable_breakpoints > 0) |
6415 | annotate_field (5); | |
6416 | ui_out_table_header (uiout, 40, ui_noalign, "what", "What"); /* 6 */ | |
6417 | ui_out_table_body (uiout); | |
6418 | if (nr_printable_breakpoints > 0) | |
6419 | annotate_breakpoints_table (); | |
7f3b0473 | 6420 | |
c4093a6a | 6421 | ALL_BREAKPOINTS (b) |
e5a67952 MS |
6422 | { |
6423 | QUIT; | |
6424 | /* If we have a filter, only list the breakpoints it accepts. */ | |
6425 | if (filter && !filter (b)) | |
6426 | continue; | |
6427 | ||
6428 | /* If we have an "args" string, it is a list of breakpoints to | |
6429 | accept. Skip the others. */ | |
6430 | ||
6431 | if (args != NULL && *args != '\0') | |
6432 | { | |
6433 | if (allflag) /* maintenance info breakpoint */ | |
6434 | { | |
6435 | if (parse_and_eval_long (args) != b->number) | |
6436 | continue; | |
6437 | } | |
6438 | else /* all others */ | |
6439 | { | |
6440 | if (!number_is_in_list (args, b->number)) | |
6441 | continue; | |
6442 | } | |
6443 | } | |
6444 | /* We only print out user settable breakpoints unless the | |
6445 | allflag is set. */ | |
6446 | if (allflag || user_breakpoint_p (b)) | |
12c5a436 | 6447 | print_one_breakpoint (b, &last_loc, allflag); |
e5a67952 MS |
6448 | } |
6449 | ||
3b31d625 | 6450 | do_cleanups (bkpttbl_chain); |
698384cd | 6451 | |
7f3b0473 | 6452 | if (nr_printable_breakpoints == 0) |
c906108c | 6453 | { |
4a64f543 MS |
6454 | /* If there's a filter, let the caller decide how to report |
6455 | empty list. */ | |
d77f58be SS |
6456 | if (!filter) |
6457 | { | |
e5a67952 | 6458 | if (args == NULL || *args == '\0') |
d77f58be SS |
6459 | ui_out_message (uiout, 0, "No breakpoints or watchpoints.\n"); |
6460 | else | |
4a64f543 | 6461 | ui_out_message (uiout, 0, |
e5a67952 MS |
6462 | "No breakpoint or watchpoint matching '%s'.\n", |
6463 | args); | |
d77f58be | 6464 | } |
c906108c SS |
6465 | } |
6466 | else | |
c4093a6a | 6467 | { |
a6d9a66e UW |
6468 | if (last_loc && !server_command) |
6469 | set_next_address (last_loc->gdbarch, last_loc->address); | |
c4093a6a | 6470 | } |
c906108c | 6471 | |
4a64f543 | 6472 | /* FIXME? Should this be moved up so that it is only called when |
c4093a6a | 6473 | there have been breakpoints? */ |
c906108c | 6474 | annotate_breakpoints_table_end (); |
d77f58be SS |
6475 | |
6476 | return nr_printable_breakpoints; | |
c906108c SS |
6477 | } |
6478 | ||
ad443146 SS |
6479 | /* Display the value of default-collect in a way that is generally |
6480 | compatible with the breakpoint list. */ | |
6481 | ||
6482 | static void | |
6483 | default_collect_info (void) | |
6484 | { | |
79a45e25 PA |
6485 | struct ui_out *uiout = current_uiout; |
6486 | ||
ad443146 SS |
6487 | /* If it has no value (which is frequently the case), say nothing; a |
6488 | message like "No default-collect." gets in user's face when it's | |
6489 | not wanted. */ | |
6490 | if (!*default_collect) | |
6491 | return; | |
6492 | ||
6493 | /* The following phrase lines up nicely with per-tracepoint collect | |
6494 | actions. */ | |
6495 | ui_out_text (uiout, "default collect "); | |
6496 | ui_out_field_string (uiout, "default-collect", default_collect); | |
6497 | ui_out_text (uiout, " \n"); | |
6498 | } | |
6499 | ||
c906108c | 6500 | static void |
e5a67952 | 6501 | breakpoints_info (char *args, int from_tty) |
c906108c | 6502 | { |
e5a67952 | 6503 | breakpoint_1 (args, 0, NULL); |
ad443146 SS |
6504 | |
6505 | default_collect_info (); | |
d77f58be SS |
6506 | } |
6507 | ||
6508 | static void | |
e5a67952 | 6509 | watchpoints_info (char *args, int from_tty) |
d77f58be | 6510 | { |
e5a67952 | 6511 | int num_printed = breakpoint_1 (args, 0, is_watchpoint); |
79a45e25 | 6512 | struct ui_out *uiout = current_uiout; |
d77f58be SS |
6513 | |
6514 | if (num_printed == 0) | |
6515 | { | |
e5a67952 | 6516 | if (args == NULL || *args == '\0') |
d77f58be SS |
6517 | ui_out_message (uiout, 0, "No watchpoints.\n"); |
6518 | else | |
e5a67952 | 6519 | ui_out_message (uiout, 0, "No watchpoint matching '%s'.\n", args); |
d77f58be | 6520 | } |
c906108c SS |
6521 | } |
6522 | ||
7a292a7a | 6523 | static void |
e5a67952 | 6524 | maintenance_info_breakpoints (char *args, int from_tty) |
c906108c | 6525 | { |
e5a67952 | 6526 | breakpoint_1 (args, 1, NULL); |
ad443146 SS |
6527 | |
6528 | default_collect_info (); | |
c906108c SS |
6529 | } |
6530 | ||
0d381245 | 6531 | static int |
714835d5 | 6532 | breakpoint_has_pc (struct breakpoint *b, |
6c95b8df | 6533 | struct program_space *pspace, |
714835d5 | 6534 | CORE_ADDR pc, struct obj_section *section) |
0d381245 VP |
6535 | { |
6536 | struct bp_location *bl = b->loc; | |
cc59ec59 | 6537 | |
0d381245 VP |
6538 | for (; bl; bl = bl->next) |
6539 | { | |
6c95b8df PA |
6540 | if (bl->pspace == pspace |
6541 | && bl->address == pc | |
0d381245 VP |
6542 | && (!overlay_debugging || bl->section == section)) |
6543 | return 1; | |
6544 | } | |
6545 | return 0; | |
6546 | } | |
6547 | ||
672f9b60 | 6548 | /* Print a message describing any user-breakpoints set at PC. This |
6c95b8df PA |
6549 | concerns with logical breakpoints, so we match program spaces, not |
6550 | address spaces. */ | |
c906108c SS |
6551 | |
6552 | static void | |
6c95b8df PA |
6553 | describe_other_breakpoints (struct gdbarch *gdbarch, |
6554 | struct program_space *pspace, CORE_ADDR pc, | |
5af949e3 | 6555 | struct obj_section *section, int thread) |
c906108c | 6556 | { |
52f0bd74 AC |
6557 | int others = 0; |
6558 | struct breakpoint *b; | |
c906108c SS |
6559 | |
6560 | ALL_BREAKPOINTS (b) | |
672f9b60 KP |
6561 | others += (user_breakpoint_p (b) |
6562 | && breakpoint_has_pc (b, pspace, pc, section)); | |
c906108c SS |
6563 | if (others > 0) |
6564 | { | |
a3f17187 AC |
6565 | if (others == 1) |
6566 | printf_filtered (_("Note: breakpoint ")); | |
6567 | else /* if (others == ???) */ | |
6568 | printf_filtered (_("Note: breakpoints ")); | |
c906108c | 6569 | ALL_BREAKPOINTS (b) |
672f9b60 | 6570 | if (user_breakpoint_p (b) && breakpoint_has_pc (b, pspace, pc, section)) |
0d381245 VP |
6571 | { |
6572 | others--; | |
6573 | printf_filtered ("%d", b->number); | |
6574 | if (b->thread == -1 && thread != -1) | |
6575 | printf_filtered (" (all threads)"); | |
6576 | else if (b->thread != -1) | |
6577 | printf_filtered (" (thread %d)", b->thread); | |
6578 | printf_filtered ("%s%s ", | |
059fb39f | 6579 | ((b->enable_state == bp_disabled |
f8eba3c6 | 6580 | || b->enable_state == bp_call_disabled) |
0d381245 VP |
6581 | ? " (disabled)" |
6582 | : b->enable_state == bp_permanent | |
6583 | ? " (permanent)" | |
6584 | : ""), | |
6585 | (others > 1) ? "," | |
6586 | : ((others == 1) ? " and" : "")); | |
6587 | } | |
a3f17187 | 6588 | printf_filtered (_("also set at pc ")); |
5af949e3 | 6589 | fputs_filtered (paddress (gdbarch, pc), gdb_stdout); |
c906108c SS |
6590 | printf_filtered (".\n"); |
6591 | } | |
6592 | } | |
6593 | \f | |
c906108c | 6594 | |
e4f237da KB |
6595 | /* Return true iff it is meaningful to use the address member of |
6596 | BPT. For some breakpoint types, the address member is irrelevant | |
6597 | and it makes no sense to attempt to compare it to other addresses | |
6598 | (or use it for any other purpose either). | |
6599 | ||
4a64f543 MS |
6600 | More specifically, each of the following breakpoint types will |
6601 | always have a zero valued address and we don't want to mark | |
6602 | breakpoints of any of these types to be a duplicate of an actual | |
6603 | breakpoint at address zero: | |
e4f237da KB |
6604 | |
6605 | bp_watchpoint | |
2d134ed3 PA |
6606 | bp_catchpoint |
6607 | ||
6608 | */ | |
e4f237da KB |
6609 | |
6610 | static int | |
6611 | breakpoint_address_is_meaningful (struct breakpoint *bpt) | |
6612 | { | |
6613 | enum bptype type = bpt->type; | |
6614 | ||
2d134ed3 PA |
6615 | return (type != bp_watchpoint && type != bp_catchpoint); |
6616 | } | |
6617 | ||
6618 | /* Assuming LOC1 and LOC2's owners are hardware watchpoints, returns | |
6619 | true if LOC1 and LOC2 represent the same watchpoint location. */ | |
6620 | ||
6621 | static int | |
4a64f543 MS |
6622 | watchpoint_locations_match (struct bp_location *loc1, |
6623 | struct bp_location *loc2) | |
2d134ed3 | 6624 | { |
3a5c3e22 PA |
6625 | struct watchpoint *w1 = (struct watchpoint *) loc1->owner; |
6626 | struct watchpoint *w2 = (struct watchpoint *) loc2->owner; | |
6627 | ||
6628 | /* Both of them must exist. */ | |
6629 | gdb_assert (w1 != NULL); | |
6630 | gdb_assert (w2 != NULL); | |
2bdf28a0 | 6631 | |
4a64f543 MS |
6632 | /* If the target can evaluate the condition expression in hardware, |
6633 | then we we need to insert both watchpoints even if they are at | |
6634 | the same place. Otherwise the watchpoint will only trigger when | |
6635 | the condition of whichever watchpoint was inserted evaluates to | |
6636 | true, not giving a chance for GDB to check the condition of the | |
6637 | other watchpoint. */ | |
3a5c3e22 | 6638 | if ((w1->cond_exp |
4a64f543 MS |
6639 | && target_can_accel_watchpoint_condition (loc1->address, |
6640 | loc1->length, | |
0cf6dd15 | 6641 | loc1->watchpoint_type, |
3a5c3e22 PA |
6642 | w1->cond_exp)) |
6643 | || (w2->cond_exp | |
4a64f543 MS |
6644 | && target_can_accel_watchpoint_condition (loc2->address, |
6645 | loc2->length, | |
0cf6dd15 | 6646 | loc2->watchpoint_type, |
3a5c3e22 | 6647 | w2->cond_exp))) |
0cf6dd15 TJB |
6648 | return 0; |
6649 | ||
85d721b8 PA |
6650 | /* Note that this checks the owner's type, not the location's. In |
6651 | case the target does not support read watchpoints, but does | |
6652 | support access watchpoints, we'll have bp_read_watchpoint | |
6653 | watchpoints with hw_access locations. Those should be considered | |
6654 | duplicates of hw_read locations. The hw_read locations will | |
6655 | become hw_access locations later. */ | |
2d134ed3 PA |
6656 | return (loc1->owner->type == loc2->owner->type |
6657 | && loc1->pspace->aspace == loc2->pspace->aspace | |
6658 | && loc1->address == loc2->address | |
6659 | && loc1->length == loc2->length); | |
e4f237da KB |
6660 | } |
6661 | ||
6c95b8df PA |
6662 | /* Returns true if {ASPACE1,ADDR1} and {ASPACE2,ADDR2} represent the |
6663 | same breakpoint location. In most targets, this can only be true | |
6664 | if ASPACE1 matches ASPACE2. On targets that have global | |
6665 | breakpoints, the address space doesn't really matter. */ | |
6666 | ||
6667 | static int | |
6668 | breakpoint_address_match (struct address_space *aspace1, CORE_ADDR addr1, | |
6669 | struct address_space *aspace2, CORE_ADDR addr2) | |
6670 | { | |
f5656ead | 6671 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
6c95b8df PA |
6672 | || aspace1 == aspace2) |
6673 | && addr1 == addr2); | |
6674 | } | |
6675 | ||
f1310107 TJB |
6676 | /* Returns true if {ASPACE2,ADDR2} falls within the range determined by |
6677 | {ASPACE1,ADDR1,LEN1}. In most targets, this can only be true if ASPACE1 | |
6678 | matches ASPACE2. On targets that have global breakpoints, the address | |
6679 | space doesn't really matter. */ | |
6680 | ||
6681 | static int | |
6682 | breakpoint_address_match_range (struct address_space *aspace1, CORE_ADDR addr1, | |
6683 | int len1, struct address_space *aspace2, | |
6684 | CORE_ADDR addr2) | |
6685 | { | |
f5656ead | 6686 | return ((gdbarch_has_global_breakpoints (target_gdbarch ()) |
f1310107 TJB |
6687 | || aspace1 == aspace2) |
6688 | && addr2 >= addr1 && addr2 < addr1 + len1); | |
6689 | } | |
6690 | ||
6691 | /* Returns true if {ASPACE,ADDR} matches the breakpoint BL. BL may be | |
6692 | a ranged breakpoint. In most targets, a match happens only if ASPACE | |
6693 | matches the breakpoint's address space. On targets that have global | |
6694 | breakpoints, the address space doesn't really matter. */ | |
6695 | ||
6696 | static int | |
6697 | breakpoint_location_address_match (struct bp_location *bl, | |
6698 | struct address_space *aspace, | |
6699 | CORE_ADDR addr) | |
6700 | { | |
6701 | return (breakpoint_address_match (bl->pspace->aspace, bl->address, | |
6702 | aspace, addr) | |
6703 | || (bl->length | |
6704 | && breakpoint_address_match_range (bl->pspace->aspace, | |
6705 | bl->address, bl->length, | |
6706 | aspace, addr))); | |
6707 | } | |
6708 | ||
1e4d1764 YQ |
6709 | /* If LOC1 and LOC2's owners are not tracepoints, returns false directly. |
6710 | Then, if LOC1 and LOC2 represent the same tracepoint location, returns | |
6711 | true, otherwise returns false. */ | |
6712 | ||
6713 | static int | |
6714 | tracepoint_locations_match (struct bp_location *loc1, | |
6715 | struct bp_location *loc2) | |
6716 | { | |
6717 | if (is_tracepoint (loc1->owner) && is_tracepoint (loc2->owner)) | |
6718 | /* Since tracepoint locations are never duplicated with others', tracepoint | |
6719 | locations at the same address of different tracepoints are regarded as | |
6720 | different locations. */ | |
6721 | return (loc1->address == loc2->address && loc1->owner == loc2->owner); | |
6722 | else | |
6723 | return 0; | |
6724 | } | |
6725 | ||
2d134ed3 PA |
6726 | /* Assuming LOC1 and LOC2's types' have meaningful target addresses |
6727 | (breakpoint_address_is_meaningful), returns true if LOC1 and LOC2 | |
6728 | represent the same location. */ | |
6729 | ||
6730 | static int | |
4a64f543 MS |
6731 | breakpoint_locations_match (struct bp_location *loc1, |
6732 | struct bp_location *loc2) | |
2d134ed3 | 6733 | { |
2bdf28a0 JK |
6734 | int hw_point1, hw_point2; |
6735 | ||
6736 | /* Both of them must not be in moribund_locations. */ | |
6737 | gdb_assert (loc1->owner != NULL); | |
6738 | gdb_assert (loc2->owner != NULL); | |
6739 | ||
6740 | hw_point1 = is_hardware_watchpoint (loc1->owner); | |
6741 | hw_point2 = is_hardware_watchpoint (loc2->owner); | |
2d134ed3 PA |
6742 | |
6743 | if (hw_point1 != hw_point2) | |
6744 | return 0; | |
6745 | else if (hw_point1) | |
6746 | return watchpoint_locations_match (loc1, loc2); | |
1e4d1764 YQ |
6747 | else if (is_tracepoint (loc1->owner) || is_tracepoint (loc2->owner)) |
6748 | return tracepoint_locations_match (loc1, loc2); | |
2d134ed3 | 6749 | else |
f1310107 TJB |
6750 | /* We compare bp_location.length in order to cover ranged breakpoints. */ |
6751 | return (breakpoint_address_match (loc1->pspace->aspace, loc1->address, | |
6752 | loc2->pspace->aspace, loc2->address) | |
6753 | && loc1->length == loc2->length); | |
2d134ed3 PA |
6754 | } |
6755 | ||
76897487 KB |
6756 | static void |
6757 | breakpoint_adjustment_warning (CORE_ADDR from_addr, CORE_ADDR to_addr, | |
6758 | int bnum, int have_bnum) | |
6759 | { | |
f63fbe86 MS |
6760 | /* The longest string possibly returned by hex_string_custom |
6761 | is 50 chars. These must be at least that big for safety. */ | |
6762 | char astr1[64]; | |
6763 | char astr2[64]; | |
76897487 | 6764 | |
bb599908 PH |
6765 | strcpy (astr1, hex_string_custom ((unsigned long) from_addr, 8)); |
6766 | strcpy (astr2, hex_string_custom ((unsigned long) to_addr, 8)); | |
76897487 | 6767 | if (have_bnum) |
8a3fe4f8 | 6768 | warning (_("Breakpoint %d address previously adjusted from %s to %s."), |
76897487 KB |
6769 | bnum, astr1, astr2); |
6770 | else | |
8a3fe4f8 | 6771 | warning (_("Breakpoint address adjusted from %s to %s."), astr1, astr2); |
76897487 KB |
6772 | } |
6773 | ||
4a64f543 MS |
6774 | /* Adjust a breakpoint's address to account for architectural |
6775 | constraints on breakpoint placement. Return the adjusted address. | |
6776 | Note: Very few targets require this kind of adjustment. For most | |
6777 | targets, this function is simply the identity function. */ | |
76897487 KB |
6778 | |
6779 | static CORE_ADDR | |
a6d9a66e UW |
6780 | adjust_breakpoint_address (struct gdbarch *gdbarch, |
6781 | CORE_ADDR bpaddr, enum bptype bptype) | |
76897487 | 6782 | { |
a6d9a66e | 6783 | if (!gdbarch_adjust_breakpoint_address_p (gdbarch)) |
76897487 KB |
6784 | { |
6785 | /* Very few targets need any kind of breakpoint adjustment. */ | |
6786 | return bpaddr; | |
6787 | } | |
88f7da05 KB |
6788 | else if (bptype == bp_watchpoint |
6789 | || bptype == bp_hardware_watchpoint | |
6790 | || bptype == bp_read_watchpoint | |
6791 | || bptype == bp_access_watchpoint | |
fe798b75 | 6792 | || bptype == bp_catchpoint) |
88f7da05 KB |
6793 | { |
6794 | /* Watchpoints and the various bp_catch_* eventpoints should not | |
6795 | have their addresses modified. */ | |
6796 | return bpaddr; | |
6797 | } | |
76897487 KB |
6798 | else |
6799 | { | |
6800 | CORE_ADDR adjusted_bpaddr; | |
6801 | ||
6802 | /* Some targets have architectural constraints on the placement | |
6803 | of breakpoint instructions. Obtain the adjusted address. */ | |
a6d9a66e | 6804 | adjusted_bpaddr = gdbarch_adjust_breakpoint_address (gdbarch, bpaddr); |
76897487 KB |
6805 | |
6806 | /* An adjusted breakpoint address can significantly alter | |
6807 | a user's expectations. Print a warning if an adjustment | |
6808 | is required. */ | |
6809 | if (adjusted_bpaddr != bpaddr) | |
6810 | breakpoint_adjustment_warning (bpaddr, adjusted_bpaddr, 0, 0); | |
6811 | ||
6812 | return adjusted_bpaddr; | |
6813 | } | |
6814 | } | |
6815 | ||
28010a5d PA |
6816 | void |
6817 | init_bp_location (struct bp_location *loc, const struct bp_location_ops *ops, | |
6818 | struct breakpoint *owner) | |
7cc221ef | 6819 | { |
7cc221ef DJ |
6820 | memset (loc, 0, sizeof (*loc)); |
6821 | ||
348d480f PA |
6822 | gdb_assert (ops != NULL); |
6823 | ||
28010a5d PA |
6824 | loc->ops = ops; |
6825 | loc->owner = owner; | |
511a6cd4 | 6826 | loc->cond = NULL; |
b775012e | 6827 | loc->cond_bytecode = NULL; |
0d381245 VP |
6828 | loc->shlib_disabled = 0; |
6829 | loc->enabled = 1; | |
e049a4b5 | 6830 | |
28010a5d | 6831 | switch (owner->type) |
e049a4b5 DJ |
6832 | { |
6833 | case bp_breakpoint: | |
6834 | case bp_until: | |
6835 | case bp_finish: | |
6836 | case bp_longjmp: | |
6837 | case bp_longjmp_resume: | |
e2e4d78b | 6838 | case bp_longjmp_call_dummy: |
186c406b TT |
6839 | case bp_exception: |
6840 | case bp_exception_resume: | |
e049a4b5 | 6841 | case bp_step_resume: |
2c03e5be | 6842 | case bp_hp_step_resume: |
e049a4b5 DJ |
6843 | case bp_watchpoint_scope: |
6844 | case bp_call_dummy: | |
aa7d318d | 6845 | case bp_std_terminate: |
e049a4b5 DJ |
6846 | case bp_shlib_event: |
6847 | case bp_thread_event: | |
6848 | case bp_overlay_event: | |
4efc6507 | 6849 | case bp_jit_event: |
0fd8e87f | 6850 | case bp_longjmp_master: |
aa7d318d | 6851 | case bp_std_terminate_master: |
186c406b | 6852 | case bp_exception_master: |
0e30163f JK |
6853 | case bp_gnu_ifunc_resolver: |
6854 | case bp_gnu_ifunc_resolver_return: | |
e7e0cddf | 6855 | case bp_dprintf: |
e049a4b5 | 6856 | loc->loc_type = bp_loc_software_breakpoint; |
b775012e | 6857 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6858 | break; |
6859 | case bp_hardware_breakpoint: | |
6860 | loc->loc_type = bp_loc_hardware_breakpoint; | |
b775012e | 6861 | mark_breakpoint_location_modified (loc); |
e049a4b5 DJ |
6862 | break; |
6863 | case bp_hardware_watchpoint: | |
6864 | case bp_read_watchpoint: | |
6865 | case bp_access_watchpoint: | |
6866 | loc->loc_type = bp_loc_hardware_watchpoint; | |
6867 | break; | |
6868 | case bp_watchpoint: | |
ce78b96d | 6869 | case bp_catchpoint: |
15c3d785 PA |
6870 | case bp_tracepoint: |
6871 | case bp_fast_tracepoint: | |
0fb4aa4b | 6872 | case bp_static_tracepoint: |
e049a4b5 DJ |
6873 | loc->loc_type = bp_loc_other; |
6874 | break; | |
6875 | default: | |
e2e0b3e5 | 6876 | internal_error (__FILE__, __LINE__, _("unknown breakpoint type")); |
e049a4b5 DJ |
6877 | } |
6878 | ||
f431efe5 | 6879 | loc->refc = 1; |
28010a5d PA |
6880 | } |
6881 | ||
6882 | /* Allocate a struct bp_location. */ | |
6883 | ||
6884 | static struct bp_location * | |
6885 | allocate_bp_location (struct breakpoint *bpt) | |
6886 | { | |
348d480f PA |
6887 | return bpt->ops->allocate_location (bpt); |
6888 | } | |
7cc221ef | 6889 | |
f431efe5 PA |
6890 | static void |
6891 | free_bp_location (struct bp_location *loc) | |
fe3f5fa8 | 6892 | { |
348d480f | 6893 | loc->ops->dtor (loc); |
fe3f5fa8 VP |
6894 | xfree (loc); |
6895 | } | |
6896 | ||
f431efe5 PA |
6897 | /* Increment reference count. */ |
6898 | ||
6899 | static void | |
6900 | incref_bp_location (struct bp_location *bl) | |
6901 | { | |
6902 | ++bl->refc; | |
6903 | } | |
6904 | ||
6905 | /* Decrement reference count. If the reference count reaches 0, | |
6906 | destroy the bp_location. Sets *BLP to NULL. */ | |
6907 | ||
6908 | static void | |
6909 | decref_bp_location (struct bp_location **blp) | |
6910 | { | |
0807b50c PA |
6911 | gdb_assert ((*blp)->refc > 0); |
6912 | ||
f431efe5 PA |
6913 | if (--(*blp)->refc == 0) |
6914 | free_bp_location (*blp); | |
6915 | *blp = NULL; | |
6916 | } | |
6917 | ||
346774a9 | 6918 | /* Add breakpoint B at the end of the global breakpoint chain. */ |
c906108c | 6919 | |
346774a9 PA |
6920 | static void |
6921 | add_to_breakpoint_chain (struct breakpoint *b) | |
c906108c | 6922 | { |
346774a9 | 6923 | struct breakpoint *b1; |
c906108c | 6924 | |
346774a9 PA |
6925 | /* Add this breakpoint to the end of the chain so that a list of |
6926 | breakpoints will come out in order of increasing numbers. */ | |
6927 | ||
6928 | b1 = breakpoint_chain; | |
6929 | if (b1 == 0) | |
6930 | breakpoint_chain = b; | |
6931 | else | |
6932 | { | |
6933 | while (b1->next) | |
6934 | b1 = b1->next; | |
6935 | b1->next = b; | |
6936 | } | |
6937 | } | |
6938 | ||
6939 | /* Initializes breakpoint B with type BPTYPE and no locations yet. */ | |
6940 | ||
6941 | static void | |
6942 | init_raw_breakpoint_without_location (struct breakpoint *b, | |
6943 | struct gdbarch *gdbarch, | |
28010a5d | 6944 | enum bptype bptype, |
c0a91b2b | 6945 | const struct breakpoint_ops *ops) |
346774a9 | 6946 | { |
c906108c | 6947 | memset (b, 0, sizeof (*b)); |
2219d63c | 6948 | |
348d480f PA |
6949 | gdb_assert (ops != NULL); |
6950 | ||
28010a5d | 6951 | b->ops = ops; |
4d28f7a8 | 6952 | b->type = bptype; |
a6d9a66e | 6953 | b->gdbarch = gdbarch; |
c906108c SS |
6954 | b->language = current_language->la_language; |
6955 | b->input_radix = input_radix; | |
6956 | b->thread = -1; | |
b5de0fa7 | 6957 | b->enable_state = bp_enabled; |
c906108c SS |
6958 | b->next = 0; |
6959 | b->silent = 0; | |
6960 | b->ignore_count = 0; | |
6961 | b->commands = NULL; | |
818dd999 | 6962 | b->frame_id = null_frame_id; |
0d381245 | 6963 | b->condition_not_parsed = 0; |
84f4c1fe | 6964 | b->py_bp_object = NULL; |
d0fb5eae | 6965 | b->related_breakpoint = b; |
346774a9 PA |
6966 | } |
6967 | ||
6968 | /* Helper to set_raw_breakpoint below. Creates a breakpoint | |
6969 | that has type BPTYPE and has no locations as yet. */ | |
346774a9 PA |
6970 | |
6971 | static struct breakpoint * | |
6972 | set_raw_breakpoint_without_location (struct gdbarch *gdbarch, | |
348d480f | 6973 | enum bptype bptype, |
c0a91b2b | 6974 | const struct breakpoint_ops *ops) |
346774a9 PA |
6975 | { |
6976 | struct breakpoint *b = XNEW (struct breakpoint); | |
6977 | ||
348d480f | 6978 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
c56053d2 | 6979 | add_to_breakpoint_chain (b); |
0d381245 VP |
6980 | return b; |
6981 | } | |
6982 | ||
0e30163f JK |
6983 | /* Initialize loc->function_name. EXPLICIT_LOC says no indirect function |
6984 | resolutions should be made as the user specified the location explicitly | |
6985 | enough. */ | |
6986 | ||
0d381245 | 6987 | static void |
0e30163f | 6988 | set_breakpoint_location_function (struct bp_location *loc, int explicit_loc) |
0d381245 | 6989 | { |
2bdf28a0 JK |
6990 | gdb_assert (loc->owner != NULL); |
6991 | ||
0d381245 | 6992 | if (loc->owner->type == bp_breakpoint |
1042e4c0 | 6993 | || loc->owner->type == bp_hardware_breakpoint |
d77f58be | 6994 | || is_tracepoint (loc->owner)) |
0d381245 | 6995 | { |
0e30163f | 6996 | int is_gnu_ifunc; |
2c02bd72 | 6997 | const char *function_name; |
6a3a010b | 6998 | CORE_ADDR func_addr; |
0e30163f | 6999 | |
2c02bd72 | 7000 | find_pc_partial_function_gnu_ifunc (loc->address, &function_name, |
6a3a010b | 7001 | &func_addr, NULL, &is_gnu_ifunc); |
0e30163f JK |
7002 | |
7003 | if (is_gnu_ifunc && !explicit_loc) | |
7004 | { | |
7005 | struct breakpoint *b = loc->owner; | |
7006 | ||
7007 | gdb_assert (loc->pspace == current_program_space); | |
2c02bd72 | 7008 | if (gnu_ifunc_resolve_name (function_name, |
0e30163f JK |
7009 | &loc->requested_address)) |
7010 | { | |
7011 | /* Recalculate ADDRESS based on new REQUESTED_ADDRESS. */ | |
7012 | loc->address = adjust_breakpoint_address (loc->gdbarch, | |
7013 | loc->requested_address, | |
7014 | b->type); | |
7015 | } | |
7016 | else if (b->type == bp_breakpoint && b->loc == loc | |
7017 | && loc->next == NULL && b->related_breakpoint == b) | |
7018 | { | |
7019 | /* Create only the whole new breakpoint of this type but do not | |
7020 | mess more complicated breakpoints with multiple locations. */ | |
7021 | b->type = bp_gnu_ifunc_resolver; | |
6a3a010b MR |
7022 | /* Remember the resolver's address for use by the return |
7023 | breakpoint. */ | |
7024 | loc->related_address = func_addr; | |
0e30163f JK |
7025 | } |
7026 | } | |
7027 | ||
2c02bd72 DE |
7028 | if (function_name) |
7029 | loc->function_name = xstrdup (function_name); | |
0d381245 VP |
7030 | } |
7031 | } | |
7032 | ||
a6d9a66e | 7033 | /* Attempt to determine architecture of location identified by SAL. */ |
1bfeeb0f | 7034 | struct gdbarch * |
a6d9a66e UW |
7035 | get_sal_arch (struct symtab_and_line sal) |
7036 | { | |
7037 | if (sal.section) | |
7038 | return get_objfile_arch (sal.section->objfile); | |
7039 | if (sal.symtab) | |
7040 | return get_objfile_arch (sal.symtab->objfile); | |
7041 | ||
7042 | return NULL; | |
7043 | } | |
7044 | ||
346774a9 PA |
7045 | /* Low level routine for partially initializing a breakpoint of type |
7046 | BPTYPE. The newly created breakpoint's address, section, source | |
c56053d2 | 7047 | file name, and line number are provided by SAL. |
0d381245 VP |
7048 | |
7049 | It is expected that the caller will complete the initialization of | |
7050 | the newly created breakpoint struct as well as output any status | |
c56053d2 | 7051 | information regarding the creation of a new breakpoint. */ |
0d381245 | 7052 | |
346774a9 PA |
7053 | static void |
7054 | init_raw_breakpoint (struct breakpoint *b, struct gdbarch *gdbarch, | |
28010a5d | 7055 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7056 | const struct breakpoint_ops *ops) |
0d381245 | 7057 | { |
28010a5d | 7058 | init_raw_breakpoint_without_location (b, gdbarch, bptype, ops); |
346774a9 | 7059 | |
3742cc8b | 7060 | add_location_to_breakpoint (b, &sal); |
0d381245 | 7061 | |
6c95b8df PA |
7062 | if (bptype != bp_catchpoint) |
7063 | gdb_assert (sal.pspace != NULL); | |
7064 | ||
f8eba3c6 TT |
7065 | /* Store the program space that was used to set the breakpoint, |
7066 | except for ordinary breakpoints, which are independent of the | |
7067 | program space. */ | |
7068 | if (bptype != bp_breakpoint && bptype != bp_hardware_breakpoint) | |
7069 | b->pspace = sal.pspace; | |
346774a9 | 7070 | } |
c906108c | 7071 | |
346774a9 PA |
7072 | /* set_raw_breakpoint is a low level routine for allocating and |
7073 | partially initializing a breakpoint of type BPTYPE. The newly | |
7074 | created breakpoint's address, section, source file name, and line | |
7075 | number are provided by SAL. The newly created and partially | |
7076 | initialized breakpoint is added to the breakpoint chain and | |
7077 | is also returned as the value of this function. | |
7078 | ||
7079 | It is expected that the caller will complete the initialization of | |
7080 | the newly created breakpoint struct as well as output any status | |
7081 | information regarding the creation of a new breakpoint. In | |
7082 | particular, set_raw_breakpoint does NOT set the breakpoint | |
7083 | number! Care should be taken to not allow an error to occur | |
7084 | prior to completing the initialization of the breakpoint. If this | |
7085 | should happen, a bogus breakpoint will be left on the chain. */ | |
7086 | ||
7087 | struct breakpoint * | |
7088 | set_raw_breakpoint (struct gdbarch *gdbarch, | |
348d480f | 7089 | struct symtab_and_line sal, enum bptype bptype, |
c0a91b2b | 7090 | const struct breakpoint_ops *ops) |
346774a9 PA |
7091 | { |
7092 | struct breakpoint *b = XNEW (struct breakpoint); | |
7093 | ||
348d480f | 7094 | init_raw_breakpoint (b, gdbarch, sal, bptype, ops); |
c56053d2 | 7095 | add_to_breakpoint_chain (b); |
c906108c SS |
7096 | return b; |
7097 | } | |
7098 | ||
c2c6d25f JM |
7099 | |
7100 | /* Note that the breakpoint object B describes a permanent breakpoint | |
7101 | instruction, hard-wired into the inferior's code. */ | |
7102 | void | |
7103 | make_breakpoint_permanent (struct breakpoint *b) | |
7104 | { | |
0d381245 | 7105 | struct bp_location *bl; |
cc59ec59 | 7106 | |
b5de0fa7 | 7107 | b->enable_state = bp_permanent; |
c2c6d25f | 7108 | |
4a64f543 MS |
7109 | /* By definition, permanent breakpoints are already present in the |
7110 | code. Mark all locations as inserted. For now, | |
7111 | make_breakpoint_permanent is called in just one place, so it's | |
7112 | hard to say if it's reasonable to have permanent breakpoint with | |
e5dd4106 | 7113 | multiple locations or not, but it's easy to implement. */ |
0d381245 VP |
7114 | for (bl = b->loc; bl; bl = bl->next) |
7115 | bl->inserted = 1; | |
c2c6d25f JM |
7116 | } |
7117 | ||
53a5351d | 7118 | /* Call this routine when stepping and nexting to enable a breakpoint |
186c406b TT |
7119 | if we do a longjmp() or 'throw' in TP. FRAME is the frame which |
7120 | initiated the operation. */ | |
c906108c SS |
7121 | |
7122 | void | |
186c406b | 7123 | set_longjmp_breakpoint (struct thread_info *tp, struct frame_id frame) |
c906108c | 7124 | { |
35df4500 | 7125 | struct breakpoint *b, *b_tmp; |
186c406b | 7126 | int thread = tp->num; |
0fd8e87f UW |
7127 | |
7128 | /* To avoid having to rescan all objfile symbols at every step, | |
7129 | we maintain a list of continually-inserted but always disabled | |
7130 | longjmp "master" breakpoints. Here, we simply create momentary | |
7131 | clones of those and enable them for the requested thread. */ | |
35df4500 | 7132 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df | 7133 | if (b->pspace == current_program_space |
186c406b TT |
7134 | && (b->type == bp_longjmp_master |
7135 | || b->type == bp_exception_master)) | |
0fd8e87f | 7136 | { |
06edf0c0 PA |
7137 | enum bptype type = b->type == bp_longjmp_master ? bp_longjmp : bp_exception; |
7138 | struct breakpoint *clone; | |
cc59ec59 | 7139 | |
e2e4d78b JK |
7140 | /* longjmp_breakpoint_ops ensures INITIATING_FRAME is cleared again |
7141 | after their removal. */ | |
06edf0c0 | 7142 | clone = momentary_breakpoint_from_master (b, type, |
e2e4d78b | 7143 | &longjmp_breakpoint_ops); |
0fd8e87f UW |
7144 | clone->thread = thread; |
7145 | } | |
186c406b TT |
7146 | |
7147 | tp->initiating_frame = frame; | |
c906108c SS |
7148 | } |
7149 | ||
611c83ae | 7150 | /* Delete all longjmp breakpoints from THREAD. */ |
c906108c | 7151 | void |
611c83ae | 7152 | delete_longjmp_breakpoint (int thread) |
c906108c | 7153 | { |
35df4500 | 7154 | struct breakpoint *b, *b_tmp; |
c906108c | 7155 | |
35df4500 | 7156 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
186c406b | 7157 | if (b->type == bp_longjmp || b->type == bp_exception) |
611c83ae PA |
7158 | { |
7159 | if (b->thread == thread) | |
7160 | delete_breakpoint (b); | |
7161 | } | |
c906108c SS |
7162 | } |
7163 | ||
f59f708a PA |
7164 | void |
7165 | delete_longjmp_breakpoint_at_next_stop (int thread) | |
7166 | { | |
7167 | struct breakpoint *b, *b_tmp; | |
7168 | ||
7169 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7170 | if (b->type == bp_longjmp || b->type == bp_exception) | |
7171 | { | |
7172 | if (b->thread == thread) | |
7173 | b->disposition = disp_del_at_next_stop; | |
7174 | } | |
7175 | } | |
7176 | ||
e2e4d78b JK |
7177 | /* Place breakpoints of type bp_longjmp_call_dummy to catch longjmp for |
7178 | INFERIOR_PTID thread. Chain them all by RELATED_BREAKPOINT and return | |
7179 | pointer to any of them. Return NULL if this system cannot place longjmp | |
7180 | breakpoints. */ | |
7181 | ||
7182 | struct breakpoint * | |
7183 | set_longjmp_breakpoint_for_call_dummy (void) | |
7184 | { | |
7185 | struct breakpoint *b, *retval = NULL; | |
7186 | ||
7187 | ALL_BREAKPOINTS (b) | |
7188 | if (b->pspace == current_program_space && b->type == bp_longjmp_master) | |
7189 | { | |
7190 | struct breakpoint *new_b; | |
7191 | ||
7192 | new_b = momentary_breakpoint_from_master (b, bp_longjmp_call_dummy, | |
7193 | &momentary_breakpoint_ops); | |
7194 | new_b->thread = pid_to_thread_id (inferior_ptid); | |
7195 | ||
7196 | /* Link NEW_B into the chain of RETVAL breakpoints. */ | |
7197 | ||
7198 | gdb_assert (new_b->related_breakpoint == new_b); | |
7199 | if (retval == NULL) | |
7200 | retval = new_b; | |
7201 | new_b->related_breakpoint = retval; | |
7202 | while (retval->related_breakpoint != new_b->related_breakpoint) | |
7203 | retval = retval->related_breakpoint; | |
7204 | retval->related_breakpoint = new_b; | |
7205 | } | |
7206 | ||
7207 | return retval; | |
7208 | } | |
7209 | ||
7210 | /* Verify all existing dummy frames and their associated breakpoints for | |
7211 | THREAD. Remove those which can no longer be found in the current frame | |
7212 | stack. | |
7213 | ||
7214 | You should call this function only at places where it is safe to currently | |
7215 | unwind the whole stack. Failed stack unwind would discard live dummy | |
7216 | frames. */ | |
7217 | ||
7218 | void | |
7219 | check_longjmp_breakpoint_for_call_dummy (int thread) | |
7220 | { | |
7221 | struct breakpoint *b, *b_tmp; | |
7222 | ||
7223 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7224 | if (b->type == bp_longjmp_call_dummy && b->thread == thread) | |
7225 | { | |
7226 | struct breakpoint *dummy_b = b->related_breakpoint; | |
7227 | ||
7228 | while (dummy_b != b && dummy_b->type != bp_call_dummy) | |
7229 | dummy_b = dummy_b->related_breakpoint; | |
7230 | if (dummy_b->type != bp_call_dummy | |
7231 | || frame_find_by_id (dummy_b->frame_id) != NULL) | |
7232 | continue; | |
7233 | ||
7234 | dummy_frame_discard (dummy_b->frame_id); | |
7235 | ||
7236 | while (b->related_breakpoint != b) | |
7237 | { | |
7238 | if (b_tmp == b->related_breakpoint) | |
7239 | b_tmp = b->related_breakpoint->next; | |
7240 | delete_breakpoint (b->related_breakpoint); | |
7241 | } | |
7242 | delete_breakpoint (b); | |
7243 | } | |
7244 | } | |
7245 | ||
1900040c MS |
7246 | void |
7247 | enable_overlay_breakpoints (void) | |
7248 | { | |
52f0bd74 | 7249 | struct breakpoint *b; |
1900040c MS |
7250 | |
7251 | ALL_BREAKPOINTS (b) | |
7252 | if (b->type == bp_overlay_event) | |
7253 | { | |
7254 | b->enable_state = bp_enabled; | |
b60e7edf | 7255 | update_global_location_list (1); |
c02f5703 | 7256 | overlay_events_enabled = 1; |
1900040c MS |
7257 | } |
7258 | } | |
7259 | ||
7260 | void | |
7261 | disable_overlay_breakpoints (void) | |
7262 | { | |
52f0bd74 | 7263 | struct breakpoint *b; |
1900040c MS |
7264 | |
7265 | ALL_BREAKPOINTS (b) | |
7266 | if (b->type == bp_overlay_event) | |
7267 | { | |
7268 | b->enable_state = bp_disabled; | |
b60e7edf | 7269 | update_global_location_list (0); |
c02f5703 | 7270 | overlay_events_enabled = 0; |
1900040c MS |
7271 | } |
7272 | } | |
7273 | ||
aa7d318d TT |
7274 | /* Set an active std::terminate breakpoint for each std::terminate |
7275 | master breakpoint. */ | |
7276 | void | |
7277 | set_std_terminate_breakpoint (void) | |
7278 | { | |
35df4500 | 7279 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7280 | |
35df4500 | 7281 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7282 | if (b->pspace == current_program_space |
7283 | && b->type == bp_std_terminate_master) | |
7284 | { | |
06edf0c0 PA |
7285 | momentary_breakpoint_from_master (b, bp_std_terminate, |
7286 | &momentary_breakpoint_ops); | |
aa7d318d TT |
7287 | } |
7288 | } | |
7289 | ||
7290 | /* Delete all the std::terminate breakpoints. */ | |
7291 | void | |
7292 | delete_std_terminate_breakpoint (void) | |
7293 | { | |
35df4500 | 7294 | struct breakpoint *b, *b_tmp; |
aa7d318d | 7295 | |
35df4500 | 7296 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
aa7d318d TT |
7297 | if (b->type == bp_std_terminate) |
7298 | delete_breakpoint (b); | |
7299 | } | |
7300 | ||
c4093a6a | 7301 | struct breakpoint * |
a6d9a66e | 7302 | create_thread_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
c4093a6a JM |
7303 | { |
7304 | struct breakpoint *b; | |
c4093a6a | 7305 | |
06edf0c0 PA |
7306 | b = create_internal_breakpoint (gdbarch, address, bp_thread_event, |
7307 | &internal_breakpoint_ops); | |
7308 | ||
b5de0fa7 | 7309 | b->enable_state = bp_enabled; |
c4093a6a | 7310 | /* addr_string has to be used or breakpoint_re_set will delete me. */ |
5af949e3 UW |
7311 | b->addr_string |
7312 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
c4093a6a | 7313 | |
b60e7edf | 7314 | update_global_location_list_nothrow (1); |
74960c60 | 7315 | |
c4093a6a JM |
7316 | return b; |
7317 | } | |
7318 | ||
7319 | void | |
7320 | remove_thread_event_breakpoints (void) | |
7321 | { | |
35df4500 | 7322 | struct breakpoint *b, *b_tmp; |
c4093a6a | 7323 | |
35df4500 | 7324 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7325 | if (b->type == bp_thread_event |
7326 | && b->loc->pspace == current_program_space) | |
c4093a6a JM |
7327 | delete_breakpoint (b); |
7328 | } | |
7329 | ||
0101ce28 JJ |
7330 | struct lang_and_radix |
7331 | { | |
7332 | enum language lang; | |
7333 | int radix; | |
7334 | }; | |
7335 | ||
4efc6507 DE |
7336 | /* Create a breakpoint for JIT code registration and unregistration. */ |
7337 | ||
7338 | struct breakpoint * | |
7339 | create_jit_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) | |
7340 | { | |
7341 | struct breakpoint *b; | |
7342 | ||
06edf0c0 PA |
7343 | b = create_internal_breakpoint (gdbarch, address, bp_jit_event, |
7344 | &internal_breakpoint_ops); | |
4efc6507 DE |
7345 | update_global_location_list_nothrow (1); |
7346 | return b; | |
7347 | } | |
0101ce28 | 7348 | |
03673fc7 PP |
7349 | /* Remove JIT code registration and unregistration breakpoint(s). */ |
7350 | ||
7351 | void | |
7352 | remove_jit_event_breakpoints (void) | |
7353 | { | |
7354 | struct breakpoint *b, *b_tmp; | |
7355 | ||
7356 | ALL_BREAKPOINTS_SAFE (b, b_tmp) | |
7357 | if (b->type == bp_jit_event | |
7358 | && b->loc->pspace == current_program_space) | |
7359 | delete_breakpoint (b); | |
7360 | } | |
7361 | ||
cae688ec JJ |
7362 | void |
7363 | remove_solib_event_breakpoints (void) | |
7364 | { | |
35df4500 | 7365 | struct breakpoint *b, *b_tmp; |
cae688ec | 7366 | |
35df4500 | 7367 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
6c95b8df PA |
7368 | if (b->type == bp_shlib_event |
7369 | && b->loc->pspace == current_program_space) | |
cae688ec JJ |
7370 | delete_breakpoint (b); |
7371 | } | |
7372 | ||
7373 | struct breakpoint * | |
a6d9a66e | 7374 | create_solib_event_breakpoint (struct gdbarch *gdbarch, CORE_ADDR address) |
cae688ec JJ |
7375 | { |
7376 | struct breakpoint *b; | |
7377 | ||
06edf0c0 PA |
7378 | b = create_internal_breakpoint (gdbarch, address, bp_shlib_event, |
7379 | &internal_breakpoint_ops); | |
b60e7edf | 7380 | update_global_location_list_nothrow (1); |
cae688ec JJ |
7381 | return b; |
7382 | } | |
7383 | ||
7384 | /* Disable any breakpoints that are on code in shared libraries. Only | |
7385 | apply to enabled breakpoints, disabled ones can just stay disabled. */ | |
7386 | ||
7387 | void | |
cb851954 | 7388 | disable_breakpoints_in_shlibs (void) |
cae688ec | 7389 | { |
876fa593 | 7390 | struct bp_location *loc, **locp_tmp; |
cae688ec | 7391 | |
876fa593 | 7392 | ALL_BP_LOCATIONS (loc, locp_tmp) |
cae688ec | 7393 | { |
2bdf28a0 | 7394 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7395 | struct breakpoint *b = loc->owner; |
2bdf28a0 | 7396 | |
4a64f543 MS |
7397 | /* We apply the check to all breakpoints, including disabled for |
7398 | those with loc->duplicate set. This is so that when breakpoint | |
7399 | becomes enabled, or the duplicate is removed, gdb will try to | |
7400 | insert all breakpoints. If we don't set shlib_disabled here, | |
7401 | we'll try to insert those breakpoints and fail. */ | |
1042e4c0 | 7402 | if (((b->type == bp_breakpoint) |
508ccb1f | 7403 | || (b->type == bp_jit_event) |
1042e4c0 | 7404 | || (b->type == bp_hardware_breakpoint) |
d77f58be | 7405 | || (is_tracepoint (b))) |
6c95b8df | 7406 | && loc->pspace == current_program_space |
0d381245 | 7407 | && !loc->shlib_disabled |
6c95b8df | 7408 | && solib_name_from_address (loc->pspace, loc->address) |
a77053c2 | 7409 | ) |
0d381245 VP |
7410 | { |
7411 | loc->shlib_disabled = 1; | |
7412 | } | |
cae688ec JJ |
7413 | } |
7414 | } | |
7415 | ||
1e4d1764 YQ |
7416 | /* Disable any breakpoints and tracepoints that are in an unloaded shared |
7417 | library. Only apply to enabled breakpoints, disabled ones can just stay | |
4a64f543 | 7418 | disabled. */ |
84acb35a | 7419 | |
75149521 | 7420 | static void |
84acb35a JJ |
7421 | disable_breakpoints_in_unloaded_shlib (struct so_list *solib) |
7422 | { | |
876fa593 | 7423 | struct bp_location *loc, **locp_tmp; |
84acb35a JJ |
7424 | int disabled_shlib_breaks = 0; |
7425 | ||
c86cf029 VP |
7426 | /* SunOS a.out shared libraries are always mapped, so do not |
7427 | disable breakpoints; they will only be reported as unloaded | |
7428 | through clear_solib when GDB discards its shared library | |
7429 | list. See clear_solib for more information. */ | |
7430 | if (exec_bfd != NULL | |
7431 | && bfd_get_flavour (exec_bfd) == bfd_target_aout_flavour) | |
7432 | return; | |
7433 | ||
876fa593 | 7434 | ALL_BP_LOCATIONS (loc, locp_tmp) |
84acb35a | 7435 | { |
2bdf28a0 | 7436 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always non-NULL. */ |
0d381245 | 7437 | struct breakpoint *b = loc->owner; |
cc59ec59 | 7438 | |
1e4d1764 | 7439 | if (solib->pspace == loc->pspace |
e2dd7057 | 7440 | && !loc->shlib_disabled |
1e4d1764 YQ |
7441 | && (((b->type == bp_breakpoint |
7442 | || b->type == bp_jit_event | |
7443 | || b->type == bp_hardware_breakpoint) | |
7444 | && (loc->loc_type == bp_loc_hardware_breakpoint | |
7445 | || loc->loc_type == bp_loc_software_breakpoint)) | |
7446 | || is_tracepoint (b)) | |
e2dd7057 | 7447 | && solib_contains_address_p (solib, loc->address)) |
84acb35a | 7448 | { |
e2dd7057 PP |
7449 | loc->shlib_disabled = 1; |
7450 | /* At this point, we cannot rely on remove_breakpoint | |
7451 | succeeding so we must mark the breakpoint as not inserted | |
7452 | to prevent future errors occurring in remove_breakpoints. */ | |
7453 | loc->inserted = 0; | |
8d3788bd VP |
7454 | |
7455 | /* This may cause duplicate notifications for the same breakpoint. */ | |
7456 | observer_notify_breakpoint_modified (b); | |
7457 | ||
e2dd7057 PP |
7458 | if (!disabled_shlib_breaks) |
7459 | { | |
7460 | target_terminal_ours_for_output (); | |
3e43a32a MS |
7461 | warning (_("Temporarily disabling breakpoints " |
7462 | "for unloaded shared library \"%s\""), | |
e2dd7057 | 7463 | solib->so_name); |
84acb35a | 7464 | } |
e2dd7057 | 7465 | disabled_shlib_breaks = 1; |
84acb35a JJ |
7466 | } |
7467 | } | |
84acb35a JJ |
7468 | } |
7469 | ||
ce78b96d JB |
7470 | /* FORK & VFORK catchpoints. */ |
7471 | ||
e29a4733 PA |
7472 | /* An instance of this type is used to represent a fork or vfork |
7473 | catchpoint. It includes a "struct breakpoint" as a kind of base | |
7474 | class; users downcast to "struct breakpoint *" when needed. A | |
7475 | breakpoint is really of this type iff its ops pointer points to | |
7476 | CATCH_FORK_BREAKPOINT_OPS. */ | |
7477 | ||
7478 | struct fork_catchpoint | |
7479 | { | |
7480 | /* The base class. */ | |
7481 | struct breakpoint base; | |
7482 | ||
7483 | /* Process id of a child process whose forking triggered this | |
7484 | catchpoint. This field is only valid immediately after this | |
7485 | catchpoint has triggered. */ | |
7486 | ptid_t forked_inferior_pid; | |
7487 | }; | |
7488 | ||
4a64f543 MS |
7489 | /* Implement the "insert" breakpoint_ops method for fork |
7490 | catchpoints. */ | |
ce78b96d | 7491 | |
77b06cd7 TJB |
7492 | static int |
7493 | insert_catch_fork (struct bp_location *bl) | |
ce78b96d | 7494 | { |
77b06cd7 | 7495 | return target_insert_fork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7496 | } |
7497 | ||
4a64f543 MS |
7498 | /* Implement the "remove" breakpoint_ops method for fork |
7499 | catchpoints. */ | |
ce78b96d JB |
7500 | |
7501 | static int | |
77b06cd7 | 7502 | remove_catch_fork (struct bp_location *bl) |
ce78b96d JB |
7503 | { |
7504 | return target_remove_fork_catchpoint (PIDGET (inferior_ptid)); | |
7505 | } | |
7506 | ||
7507 | /* Implement the "breakpoint_hit" breakpoint_ops method for fork | |
7508 | catchpoints. */ | |
7509 | ||
7510 | static int | |
f1310107 | 7511 | breakpoint_hit_catch_fork (const struct bp_location *bl, |
09ac7c10 TT |
7512 | struct address_space *aspace, CORE_ADDR bp_addr, |
7513 | const struct target_waitstatus *ws) | |
ce78b96d | 7514 | { |
e29a4733 PA |
7515 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7516 | ||
f90263c1 TT |
7517 | if (ws->kind != TARGET_WAITKIND_FORKED) |
7518 | return 0; | |
7519 | ||
7520 | c->forked_inferior_pid = ws->value.related_pid; | |
7521 | return 1; | |
ce78b96d JB |
7522 | } |
7523 | ||
4a64f543 MS |
7524 | /* Implement the "print_it" breakpoint_ops method for fork |
7525 | catchpoints. */ | |
ce78b96d JB |
7526 | |
7527 | static enum print_stop_action | |
348d480f | 7528 | print_it_catch_fork (bpstat bs) |
ce78b96d | 7529 | { |
36dfb11c | 7530 | struct ui_out *uiout = current_uiout; |
348d480f PA |
7531 | struct breakpoint *b = bs->breakpoint_at; |
7532 | struct fork_catchpoint *c = (struct fork_catchpoint *) bs->breakpoint_at; | |
e29a4733 | 7533 | |
ce78b96d | 7534 | annotate_catchpoint (b->number); |
36dfb11c TT |
7535 | if (b->disposition == disp_del) |
7536 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7537 | else | |
7538 | ui_out_text (uiout, "\nCatchpoint "); | |
7539 | if (ui_out_is_mi_like_p (uiout)) | |
7540 | { | |
7541 | ui_out_field_string (uiout, "reason", | |
7542 | async_reason_lookup (EXEC_ASYNC_FORK)); | |
7543 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7544 | } | |
7545 | ui_out_field_int (uiout, "bkptno", b->number); | |
7546 | ui_out_text (uiout, " (forked process "); | |
7547 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7548 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7549 | return PRINT_SRC_AND_LOC; |
7550 | } | |
7551 | ||
4a64f543 MS |
7552 | /* Implement the "print_one" breakpoint_ops method for fork |
7553 | catchpoints. */ | |
ce78b96d JB |
7554 | |
7555 | static void | |
a6d9a66e | 7556 | print_one_catch_fork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7557 | { |
e29a4733 | 7558 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7559 | struct value_print_options opts; |
79a45e25 | 7560 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7561 | |
7562 | get_user_print_options (&opts); | |
7563 | ||
4a64f543 MS |
7564 | /* Field 4, the address, is omitted (which makes the columns not |
7565 | line up too nicely with the headers, but the effect is relatively | |
7566 | readable). */ | |
79a45b7d | 7567 | if (opts.addressprint) |
ce78b96d JB |
7568 | ui_out_field_skip (uiout, "addr"); |
7569 | annotate_field (5); | |
7570 | ui_out_text (uiout, "fork"); | |
e29a4733 | 7571 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7572 | { |
7573 | ui_out_text (uiout, ", process "); | |
7574 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7575 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7576 | ui_out_spaces (uiout, 1); |
7577 | } | |
8ac3646f TT |
7578 | |
7579 | if (ui_out_is_mi_like_p (uiout)) | |
7580 | ui_out_field_string (uiout, "catch-type", "fork"); | |
ce78b96d JB |
7581 | } |
7582 | ||
7583 | /* Implement the "print_mention" breakpoint_ops method for fork | |
7584 | catchpoints. */ | |
7585 | ||
7586 | static void | |
7587 | print_mention_catch_fork (struct breakpoint *b) | |
7588 | { | |
7589 | printf_filtered (_("Catchpoint %d (fork)"), b->number); | |
7590 | } | |
7591 | ||
6149aea9 PA |
7592 | /* Implement the "print_recreate" breakpoint_ops method for fork |
7593 | catchpoints. */ | |
7594 | ||
7595 | static void | |
7596 | print_recreate_catch_fork (struct breakpoint *b, struct ui_file *fp) | |
7597 | { | |
7598 | fprintf_unfiltered (fp, "catch fork"); | |
d9b3f62e | 7599 | print_recreate_thread (b, fp); |
6149aea9 PA |
7600 | } |
7601 | ||
ce78b96d JB |
7602 | /* The breakpoint_ops structure to be used in fork catchpoints. */ |
7603 | ||
2060206e | 7604 | static struct breakpoint_ops catch_fork_breakpoint_ops; |
ce78b96d | 7605 | |
4a64f543 MS |
7606 | /* Implement the "insert" breakpoint_ops method for vfork |
7607 | catchpoints. */ | |
ce78b96d | 7608 | |
77b06cd7 TJB |
7609 | static int |
7610 | insert_catch_vfork (struct bp_location *bl) | |
ce78b96d | 7611 | { |
77b06cd7 | 7612 | return target_insert_vfork_catchpoint (PIDGET (inferior_ptid)); |
ce78b96d JB |
7613 | } |
7614 | ||
4a64f543 MS |
7615 | /* Implement the "remove" breakpoint_ops method for vfork |
7616 | catchpoints. */ | |
ce78b96d JB |
7617 | |
7618 | static int | |
77b06cd7 | 7619 | remove_catch_vfork (struct bp_location *bl) |
ce78b96d JB |
7620 | { |
7621 | return target_remove_vfork_catchpoint (PIDGET (inferior_ptid)); | |
7622 | } | |
7623 | ||
7624 | /* Implement the "breakpoint_hit" breakpoint_ops method for vfork | |
7625 | catchpoints. */ | |
7626 | ||
7627 | static int | |
f1310107 | 7628 | breakpoint_hit_catch_vfork (const struct bp_location *bl, |
09ac7c10 TT |
7629 | struct address_space *aspace, CORE_ADDR bp_addr, |
7630 | const struct target_waitstatus *ws) | |
ce78b96d | 7631 | { |
e29a4733 PA |
7632 | struct fork_catchpoint *c = (struct fork_catchpoint *) bl->owner; |
7633 | ||
f90263c1 TT |
7634 | if (ws->kind != TARGET_WAITKIND_VFORKED) |
7635 | return 0; | |
7636 | ||
7637 | c->forked_inferior_pid = ws->value.related_pid; | |
7638 | return 1; | |
ce78b96d JB |
7639 | } |
7640 | ||
4a64f543 MS |
7641 | /* Implement the "print_it" breakpoint_ops method for vfork |
7642 | catchpoints. */ | |
ce78b96d JB |
7643 | |
7644 | static enum print_stop_action | |
348d480f | 7645 | print_it_catch_vfork (bpstat bs) |
ce78b96d | 7646 | { |
36dfb11c | 7647 | struct ui_out *uiout = current_uiout; |
348d480f | 7648 | struct breakpoint *b = bs->breakpoint_at; |
e29a4733 PA |
7649 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
7650 | ||
ce78b96d | 7651 | annotate_catchpoint (b->number); |
36dfb11c TT |
7652 | if (b->disposition == disp_del) |
7653 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7654 | else | |
7655 | ui_out_text (uiout, "\nCatchpoint "); | |
7656 | if (ui_out_is_mi_like_p (uiout)) | |
7657 | { | |
7658 | ui_out_field_string (uiout, "reason", | |
7659 | async_reason_lookup (EXEC_ASYNC_VFORK)); | |
7660 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7661 | } | |
7662 | ui_out_field_int (uiout, "bkptno", b->number); | |
7663 | ui_out_text (uiout, " (vforked process "); | |
7664 | ui_out_field_int (uiout, "newpid", ptid_get_pid (c->forked_inferior_pid)); | |
7665 | ui_out_text (uiout, "), "); | |
ce78b96d JB |
7666 | return PRINT_SRC_AND_LOC; |
7667 | } | |
7668 | ||
4a64f543 MS |
7669 | /* Implement the "print_one" breakpoint_ops method for vfork |
7670 | catchpoints. */ | |
ce78b96d JB |
7671 | |
7672 | static void | |
a6d9a66e | 7673 | print_one_catch_vfork (struct breakpoint *b, struct bp_location **last_loc) |
ce78b96d | 7674 | { |
e29a4733 | 7675 | struct fork_catchpoint *c = (struct fork_catchpoint *) b; |
79a45b7d | 7676 | struct value_print_options opts; |
79a45e25 | 7677 | struct ui_out *uiout = current_uiout; |
79a45b7d TT |
7678 | |
7679 | get_user_print_options (&opts); | |
4a64f543 MS |
7680 | /* Field 4, the address, is omitted (which makes the columns not |
7681 | line up too nicely with the headers, but the effect is relatively | |
7682 | readable). */ | |
79a45b7d | 7683 | if (opts.addressprint) |
ce78b96d JB |
7684 | ui_out_field_skip (uiout, "addr"); |
7685 | annotate_field (5); | |
7686 | ui_out_text (uiout, "vfork"); | |
e29a4733 | 7687 | if (!ptid_equal (c->forked_inferior_pid, null_ptid)) |
ce78b96d JB |
7688 | { |
7689 | ui_out_text (uiout, ", process "); | |
7690 | ui_out_field_int (uiout, "what", | |
e29a4733 | 7691 | ptid_get_pid (c->forked_inferior_pid)); |
ce78b96d JB |
7692 | ui_out_spaces (uiout, 1); |
7693 | } | |
8ac3646f TT |
7694 | |
7695 | if (ui_out_is_mi_like_p (uiout)) | |
7696 | ui_out_field_string (uiout, "catch-type", "vfork"); | |
ce78b96d JB |
7697 | } |
7698 | ||
7699 | /* Implement the "print_mention" breakpoint_ops method for vfork | |
7700 | catchpoints. */ | |
7701 | ||
7702 | static void | |
7703 | print_mention_catch_vfork (struct breakpoint *b) | |
7704 | { | |
7705 | printf_filtered (_("Catchpoint %d (vfork)"), b->number); | |
7706 | } | |
7707 | ||
6149aea9 PA |
7708 | /* Implement the "print_recreate" breakpoint_ops method for vfork |
7709 | catchpoints. */ | |
7710 | ||
7711 | static void | |
7712 | print_recreate_catch_vfork (struct breakpoint *b, struct ui_file *fp) | |
7713 | { | |
7714 | fprintf_unfiltered (fp, "catch vfork"); | |
d9b3f62e | 7715 | print_recreate_thread (b, fp); |
6149aea9 PA |
7716 | } |
7717 | ||
ce78b96d JB |
7718 | /* The breakpoint_ops structure to be used in vfork catchpoints. */ |
7719 | ||
2060206e | 7720 | static struct breakpoint_ops catch_vfork_breakpoint_ops; |
ce78b96d | 7721 | |
edcc5120 TT |
7722 | /* An instance of this type is used to represent an solib catchpoint. |
7723 | It includes a "struct breakpoint" as a kind of base class; users | |
7724 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
7725 | really of this type iff its ops pointer points to | |
7726 | CATCH_SOLIB_BREAKPOINT_OPS. */ | |
7727 | ||
7728 | struct solib_catchpoint | |
7729 | { | |
7730 | /* The base class. */ | |
7731 | struct breakpoint base; | |
7732 | ||
7733 | /* True for "catch load", false for "catch unload". */ | |
7734 | unsigned char is_load; | |
7735 | ||
7736 | /* Regular expression to match, if any. COMPILED is only valid when | |
7737 | REGEX is non-NULL. */ | |
7738 | char *regex; | |
7739 | regex_t compiled; | |
7740 | }; | |
7741 | ||
7742 | static void | |
7743 | dtor_catch_solib (struct breakpoint *b) | |
7744 | { | |
7745 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7746 | ||
7747 | if (self->regex) | |
7748 | regfree (&self->compiled); | |
7749 | xfree (self->regex); | |
7750 | ||
7751 | base_breakpoint_ops.dtor (b); | |
7752 | } | |
7753 | ||
7754 | static int | |
7755 | insert_catch_solib (struct bp_location *ignore) | |
7756 | { | |
7757 | return 0; | |
7758 | } | |
7759 | ||
7760 | static int | |
7761 | remove_catch_solib (struct bp_location *ignore) | |
7762 | { | |
7763 | return 0; | |
7764 | } | |
7765 | ||
7766 | static int | |
7767 | breakpoint_hit_catch_solib (const struct bp_location *bl, | |
7768 | struct address_space *aspace, | |
7769 | CORE_ADDR bp_addr, | |
7770 | const struct target_waitstatus *ws) | |
7771 | { | |
7772 | struct solib_catchpoint *self = (struct solib_catchpoint *) bl->owner; | |
7773 | struct breakpoint *other; | |
7774 | ||
7775 | if (ws->kind == TARGET_WAITKIND_LOADED) | |
7776 | return 1; | |
7777 | ||
7778 | ALL_BREAKPOINTS (other) | |
7779 | { | |
7780 | struct bp_location *other_bl; | |
7781 | ||
7782 | if (other == bl->owner) | |
7783 | continue; | |
7784 | ||
7785 | if (other->type != bp_shlib_event) | |
7786 | continue; | |
7787 | ||
7788 | if (self->base.pspace != NULL && other->pspace != self->base.pspace) | |
7789 | continue; | |
7790 | ||
7791 | for (other_bl = other->loc; other_bl != NULL; other_bl = other_bl->next) | |
7792 | { | |
7793 | if (other->ops->breakpoint_hit (other_bl, aspace, bp_addr, ws)) | |
7794 | return 1; | |
7795 | } | |
7796 | } | |
7797 | ||
7798 | return 0; | |
7799 | } | |
7800 | ||
7801 | static void | |
7802 | check_status_catch_solib (struct bpstats *bs) | |
7803 | { | |
7804 | struct solib_catchpoint *self | |
7805 | = (struct solib_catchpoint *) bs->breakpoint_at; | |
7806 | int ix; | |
7807 | ||
7808 | if (self->is_load) | |
7809 | { | |
7810 | struct so_list *iter; | |
7811 | ||
7812 | for (ix = 0; | |
7813 | VEC_iterate (so_list_ptr, current_program_space->added_solibs, | |
7814 | ix, iter); | |
7815 | ++ix) | |
7816 | { | |
7817 | if (!self->regex | |
7818 | || regexec (&self->compiled, iter->so_name, 0, NULL, 0) == 0) | |
7819 | return; | |
7820 | } | |
7821 | } | |
7822 | else | |
7823 | { | |
7824 | char *iter; | |
7825 | ||
7826 | for (ix = 0; | |
7827 | VEC_iterate (char_ptr, current_program_space->deleted_solibs, | |
7828 | ix, iter); | |
7829 | ++ix) | |
7830 | { | |
7831 | if (!self->regex | |
7832 | || regexec (&self->compiled, iter, 0, NULL, 0) == 0) | |
7833 | return; | |
7834 | } | |
7835 | } | |
7836 | ||
7837 | bs->stop = 0; | |
7838 | bs->print_it = print_it_noop; | |
7839 | } | |
7840 | ||
7841 | static enum print_stop_action | |
7842 | print_it_catch_solib (bpstat bs) | |
7843 | { | |
7844 | struct breakpoint *b = bs->breakpoint_at; | |
7845 | struct ui_out *uiout = current_uiout; | |
7846 | ||
7847 | annotate_catchpoint (b->number); | |
7848 | if (b->disposition == disp_del) | |
7849 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
7850 | else | |
7851 | ui_out_text (uiout, "\nCatchpoint "); | |
7852 | ui_out_field_int (uiout, "bkptno", b->number); | |
7853 | ui_out_text (uiout, "\n"); | |
7854 | if (ui_out_is_mi_like_p (uiout)) | |
7855 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
7856 | print_solib_event (1); | |
7857 | return PRINT_SRC_AND_LOC; | |
7858 | } | |
7859 | ||
7860 | static void | |
7861 | print_one_catch_solib (struct breakpoint *b, struct bp_location **locs) | |
7862 | { | |
7863 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7864 | struct value_print_options opts; | |
7865 | struct ui_out *uiout = current_uiout; | |
7866 | char *msg; | |
7867 | ||
7868 | get_user_print_options (&opts); | |
7869 | /* Field 4, the address, is omitted (which makes the columns not | |
7870 | line up too nicely with the headers, but the effect is relatively | |
7871 | readable). */ | |
7872 | if (opts.addressprint) | |
7873 | { | |
7874 | annotate_field (4); | |
7875 | ui_out_field_skip (uiout, "addr"); | |
7876 | } | |
7877 | ||
7878 | annotate_field (5); | |
7879 | if (self->is_load) | |
7880 | { | |
7881 | if (self->regex) | |
7882 | msg = xstrprintf (_("load of library matching %s"), self->regex); | |
7883 | else | |
7884 | msg = xstrdup (_("load of library")); | |
7885 | } | |
7886 | else | |
7887 | { | |
7888 | if (self->regex) | |
7889 | msg = xstrprintf (_("unload of library matching %s"), self->regex); | |
7890 | else | |
7891 | msg = xstrdup (_("unload of library")); | |
7892 | } | |
7893 | ui_out_field_string (uiout, "what", msg); | |
7894 | xfree (msg); | |
8ac3646f TT |
7895 | |
7896 | if (ui_out_is_mi_like_p (uiout)) | |
7897 | ui_out_field_string (uiout, "catch-type", | |
7898 | self->is_load ? "load" : "unload"); | |
edcc5120 TT |
7899 | } |
7900 | ||
7901 | static void | |
7902 | print_mention_catch_solib (struct breakpoint *b) | |
7903 | { | |
7904 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7905 | ||
7906 | printf_filtered (_("Catchpoint %d (%s)"), b->number, | |
7907 | self->is_load ? "load" : "unload"); | |
7908 | } | |
7909 | ||
7910 | static void | |
7911 | print_recreate_catch_solib (struct breakpoint *b, struct ui_file *fp) | |
7912 | { | |
7913 | struct solib_catchpoint *self = (struct solib_catchpoint *) b; | |
7914 | ||
7915 | fprintf_unfiltered (fp, "%s %s", | |
7916 | b->disposition == disp_del ? "tcatch" : "catch", | |
7917 | self->is_load ? "load" : "unload"); | |
7918 | if (self->regex) | |
7919 | fprintf_unfiltered (fp, " %s", self->regex); | |
7920 | fprintf_unfiltered (fp, "\n"); | |
7921 | } | |
7922 | ||
7923 | static struct breakpoint_ops catch_solib_breakpoint_ops; | |
7924 | ||
91985142 MG |
7925 | /* Shared helper function (MI and CLI) for creating and installing |
7926 | a shared object event catchpoint. If IS_LOAD is non-zero then | |
7927 | the events to be caught are load events, otherwise they are | |
7928 | unload events. If IS_TEMP is non-zero the catchpoint is a | |
7929 | temporary one. If ENABLED is non-zero the catchpoint is | |
7930 | created in an enabled state. */ | |
edcc5120 | 7931 | |
91985142 MG |
7932 | void |
7933 | add_solib_catchpoint (char *arg, int is_load, int is_temp, int enabled) | |
edcc5120 TT |
7934 | { |
7935 | struct solib_catchpoint *c; | |
7936 | struct gdbarch *gdbarch = get_current_arch (); | |
edcc5120 TT |
7937 | struct cleanup *cleanup; |
7938 | ||
edcc5120 TT |
7939 | if (!arg) |
7940 | arg = ""; | |
7941 | arg = skip_spaces (arg); | |
7942 | ||
7943 | c = XCNEW (struct solib_catchpoint); | |
7944 | cleanup = make_cleanup (xfree, c); | |
7945 | ||
7946 | if (*arg != '\0') | |
7947 | { | |
7948 | int errcode; | |
7949 | ||
7950 | errcode = regcomp (&c->compiled, arg, REG_NOSUB); | |
7951 | if (errcode != 0) | |
7952 | { | |
7953 | char *err = get_regcomp_error (errcode, &c->compiled); | |
7954 | ||
7955 | make_cleanup (xfree, err); | |
7956 | error (_("Invalid regexp (%s): %s"), err, arg); | |
7957 | } | |
7958 | c->regex = xstrdup (arg); | |
7959 | } | |
7960 | ||
7961 | c->is_load = is_load; | |
91985142 | 7962 | init_catchpoint (&c->base, gdbarch, is_temp, NULL, |
edcc5120 TT |
7963 | &catch_solib_breakpoint_ops); |
7964 | ||
91985142 MG |
7965 | c->base.enable_state = enabled ? bp_enabled : bp_disabled; |
7966 | ||
edcc5120 TT |
7967 | discard_cleanups (cleanup); |
7968 | install_breakpoint (0, &c->base, 1); | |
7969 | } | |
7970 | ||
91985142 MG |
7971 | /* A helper function that does all the work for "catch load" and |
7972 | "catch unload". */ | |
7973 | ||
7974 | static void | |
7975 | catch_load_or_unload (char *arg, int from_tty, int is_load, | |
7976 | struct cmd_list_element *command) | |
7977 | { | |
7978 | int tempflag; | |
7979 | const int enabled = 1; | |
7980 | ||
7981 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
7982 | ||
7983 | add_solib_catchpoint (arg, is_load, tempflag, enabled); | |
7984 | } | |
7985 | ||
edcc5120 TT |
7986 | static void |
7987 | catch_load_command_1 (char *arg, int from_tty, | |
7988 | struct cmd_list_element *command) | |
7989 | { | |
7990 | catch_load_or_unload (arg, from_tty, 1, command); | |
7991 | } | |
7992 | ||
7993 | static void | |
7994 | catch_unload_command_1 (char *arg, int from_tty, | |
7995 | struct cmd_list_element *command) | |
7996 | { | |
7997 | catch_load_or_unload (arg, from_tty, 0, command); | |
7998 | } | |
7999 | ||
be5c67c1 PA |
8000 | /* An instance of this type is used to represent a syscall catchpoint. |
8001 | It includes a "struct breakpoint" as a kind of base class; users | |
8002 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8003 | really of this type iff its ops pointer points to | |
8004 | CATCH_SYSCALL_BREAKPOINT_OPS. */ | |
8005 | ||
8006 | struct syscall_catchpoint | |
8007 | { | |
8008 | /* The base class. */ | |
8009 | struct breakpoint base; | |
8010 | ||
8011 | /* Syscall numbers used for the 'catch syscall' feature. If no | |
8012 | syscall has been specified for filtering, its value is NULL. | |
8013 | Otherwise, it holds a list of all syscalls to be caught. The | |
8014 | list elements are allocated with xmalloc. */ | |
8015 | VEC(int) *syscalls_to_be_caught; | |
8016 | }; | |
8017 | ||
8018 | /* Implement the "dtor" breakpoint_ops method for syscall | |
8019 | catchpoints. */ | |
8020 | ||
8021 | static void | |
8022 | dtor_catch_syscall (struct breakpoint *b) | |
8023 | { | |
8024 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; | |
8025 | ||
8026 | VEC_free (int, c->syscalls_to_be_caught); | |
348d480f | 8027 | |
2060206e | 8028 | base_breakpoint_ops.dtor (b); |
be5c67c1 PA |
8029 | } |
8030 | ||
fa3064dd YQ |
8031 | static const struct inferior_data *catch_syscall_inferior_data = NULL; |
8032 | ||
8033 | struct catch_syscall_inferior_data | |
8034 | { | |
8035 | /* We keep a count of the number of times the user has requested a | |
8036 | particular syscall to be tracked, and pass this information to the | |
8037 | target. This lets capable targets implement filtering directly. */ | |
8038 | ||
8039 | /* Number of times that "any" syscall is requested. */ | |
8040 | int any_syscall_count; | |
8041 | ||
8042 | /* Count of each system call. */ | |
8043 | VEC(int) *syscalls_counts; | |
8044 | ||
8045 | /* This counts all syscall catch requests, so we can readily determine | |
8046 | if any catching is necessary. */ | |
8047 | int total_syscalls_count; | |
8048 | }; | |
8049 | ||
8050 | static struct catch_syscall_inferior_data* | |
8051 | get_catch_syscall_inferior_data (struct inferior *inf) | |
8052 | { | |
8053 | struct catch_syscall_inferior_data *inf_data; | |
8054 | ||
8055 | inf_data = inferior_data (inf, catch_syscall_inferior_data); | |
8056 | if (inf_data == NULL) | |
8057 | { | |
8058 | inf_data = XZALLOC (struct catch_syscall_inferior_data); | |
8059 | set_inferior_data (inf, catch_syscall_inferior_data, inf_data); | |
8060 | } | |
8061 | ||
8062 | return inf_data; | |
8063 | } | |
8064 | ||
8065 | static void | |
8066 | catch_syscall_inferior_data_cleanup (struct inferior *inf, void *arg) | |
8067 | { | |
8068 | xfree (arg); | |
8069 | } | |
8070 | ||
8071 | ||
a96d9b2e SDJ |
8072 | /* Implement the "insert" breakpoint_ops method for syscall |
8073 | catchpoints. */ | |
8074 | ||
77b06cd7 TJB |
8075 | static int |
8076 | insert_catch_syscall (struct bp_location *bl) | |
a96d9b2e | 8077 | { |
be5c67c1 | 8078 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8079 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8080 | struct catch_syscall_inferior_data *inf_data |
8081 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8082 | |
fa3064dd | 8083 | ++inf_data->total_syscalls_count; |
be5c67c1 | 8084 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8085 | ++inf_data->any_syscall_count; |
a96d9b2e SDJ |
8086 | else |
8087 | { | |
8088 | int i, iter; | |
cc59ec59 | 8089 | |
a96d9b2e | 8090 | for (i = 0; |
be5c67c1 | 8091 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8092 | i++) |
8093 | { | |
8094 | int elem; | |
cc59ec59 | 8095 | |
fa3064dd | 8096 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e | 8097 | { |
fa3064dd | 8098 | int old_size = VEC_length (int, inf_data->syscalls_counts); |
3e43a32a MS |
8099 | uintptr_t vec_addr_offset |
8100 | = old_size * ((uintptr_t) sizeof (int)); | |
a96d9b2e | 8101 | uintptr_t vec_addr; |
fa3064dd YQ |
8102 | VEC_safe_grow (int, inf_data->syscalls_counts, iter + 1); |
8103 | vec_addr = ((uintptr_t) VEC_address (int, | |
8104 | inf_data->syscalls_counts) | |
8105 | + vec_addr_offset); | |
a96d9b2e SDJ |
8106 | memset ((void *) vec_addr, 0, |
8107 | (iter + 1 - old_size) * sizeof (int)); | |
8108 | } | |
fa3064dd YQ |
8109 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8110 | VEC_replace (int, inf_data->syscalls_counts, iter, ++elem); | |
a96d9b2e SDJ |
8111 | } |
8112 | } | |
8113 | ||
77b06cd7 | 8114 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), |
fa3064dd YQ |
8115 | inf_data->total_syscalls_count != 0, |
8116 | inf_data->any_syscall_count, | |
8117 | VEC_length (int, | |
8118 | inf_data->syscalls_counts), | |
8119 | VEC_address (int, | |
8120 | inf_data->syscalls_counts)); | |
a96d9b2e SDJ |
8121 | } |
8122 | ||
8123 | /* Implement the "remove" breakpoint_ops method for syscall | |
8124 | catchpoints. */ | |
8125 | ||
8126 | static int | |
77b06cd7 | 8127 | remove_catch_syscall (struct bp_location *bl) |
a96d9b2e | 8128 | { |
be5c67c1 | 8129 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bl->owner; |
a96d9b2e | 8130 | struct inferior *inf = current_inferior (); |
fa3064dd YQ |
8131 | struct catch_syscall_inferior_data *inf_data |
8132 | = get_catch_syscall_inferior_data (inf); | |
a96d9b2e | 8133 | |
fa3064dd | 8134 | --inf_data->total_syscalls_count; |
be5c67c1 | 8135 | if (!c->syscalls_to_be_caught) |
fa3064dd | 8136 | --inf_data->any_syscall_count; |
a96d9b2e SDJ |
8137 | else |
8138 | { | |
8139 | int i, iter; | |
cc59ec59 | 8140 | |
a96d9b2e | 8141 | for (i = 0; |
be5c67c1 | 8142 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8143 | i++) |
8144 | { | |
8145 | int elem; | |
fa3064dd | 8146 | if (iter >= VEC_length (int, inf_data->syscalls_counts)) |
a96d9b2e SDJ |
8147 | /* Shouldn't happen. */ |
8148 | continue; | |
fa3064dd YQ |
8149 | elem = VEC_index (int, inf_data->syscalls_counts, iter); |
8150 | VEC_replace (int, inf_data->syscalls_counts, iter, --elem); | |
a96d9b2e SDJ |
8151 | } |
8152 | } | |
8153 | ||
8154 | return target_set_syscall_catchpoint (PIDGET (inferior_ptid), | |
fa3064dd YQ |
8155 | inf_data->total_syscalls_count != 0, |
8156 | inf_data->any_syscall_count, | |
8157 | VEC_length (int, | |
8158 | inf_data->syscalls_counts), | |
3e43a32a | 8159 | VEC_address (int, |
fa3064dd | 8160 | inf_data->syscalls_counts)); |
a96d9b2e SDJ |
8161 | } |
8162 | ||
8163 | /* Implement the "breakpoint_hit" breakpoint_ops method for syscall | |
8164 | catchpoints. */ | |
8165 | ||
8166 | static int | |
f1310107 | 8167 | breakpoint_hit_catch_syscall (const struct bp_location *bl, |
09ac7c10 TT |
8168 | struct address_space *aspace, CORE_ADDR bp_addr, |
8169 | const struct target_waitstatus *ws) | |
a96d9b2e | 8170 | { |
4a64f543 MS |
8171 | /* We must check if we are catching specific syscalls in this |
8172 | breakpoint. If we are, then we must guarantee that the called | |
8173 | syscall is the same syscall we are catching. */ | |
a96d9b2e | 8174 | int syscall_number = 0; |
be5c67c1 PA |
8175 | const struct syscall_catchpoint *c |
8176 | = (const struct syscall_catchpoint *) bl->owner; | |
a96d9b2e | 8177 | |
f90263c1 TT |
8178 | if (ws->kind != TARGET_WAITKIND_SYSCALL_ENTRY |
8179 | && ws->kind != TARGET_WAITKIND_SYSCALL_RETURN) | |
a96d9b2e SDJ |
8180 | return 0; |
8181 | ||
f90263c1 TT |
8182 | syscall_number = ws->value.syscall_number; |
8183 | ||
a96d9b2e | 8184 | /* Now, checking if the syscall is the same. */ |
be5c67c1 | 8185 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8186 | { |
8187 | int i, iter; | |
cc59ec59 | 8188 | |
a96d9b2e | 8189 | for (i = 0; |
be5c67c1 | 8190 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8191 | i++) |
8192 | if (syscall_number == iter) | |
8193 | break; | |
8194 | /* Not the same. */ | |
8195 | if (!iter) | |
8196 | return 0; | |
8197 | } | |
8198 | ||
8199 | return 1; | |
8200 | } | |
8201 | ||
8202 | /* Implement the "print_it" breakpoint_ops method for syscall | |
8203 | catchpoints. */ | |
8204 | ||
8205 | static enum print_stop_action | |
348d480f | 8206 | print_it_catch_syscall (bpstat bs) |
a96d9b2e | 8207 | { |
36dfb11c | 8208 | struct ui_out *uiout = current_uiout; |
348d480f | 8209 | struct breakpoint *b = bs->breakpoint_at; |
a96d9b2e SDJ |
8210 | /* These are needed because we want to know in which state a |
8211 | syscall is. It can be in the TARGET_WAITKIND_SYSCALL_ENTRY | |
8212 | or TARGET_WAITKIND_SYSCALL_RETURN, and depending on it we | |
8213 | must print "called syscall" or "returned from syscall". */ | |
8214 | ptid_t ptid; | |
8215 | struct target_waitstatus last; | |
8216 | struct syscall s; | |
a96d9b2e SDJ |
8217 | |
8218 | get_last_target_status (&ptid, &last); | |
8219 | ||
8220 | get_syscall_by_number (last.value.syscall_number, &s); | |
8221 | ||
8222 | annotate_catchpoint (b->number); | |
8223 | ||
36dfb11c TT |
8224 | if (b->disposition == disp_del) |
8225 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
a96d9b2e | 8226 | else |
36dfb11c TT |
8227 | ui_out_text (uiout, "\nCatchpoint "); |
8228 | if (ui_out_is_mi_like_p (uiout)) | |
8229 | { | |
8230 | ui_out_field_string (uiout, "reason", | |
8231 | async_reason_lookup (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY | |
8232 | ? EXEC_ASYNC_SYSCALL_ENTRY | |
8233 | : EXEC_ASYNC_SYSCALL_RETURN)); | |
8234 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8235 | } | |
8236 | ui_out_field_int (uiout, "bkptno", b->number); | |
a96d9b2e SDJ |
8237 | |
8238 | if (last.kind == TARGET_WAITKIND_SYSCALL_ENTRY) | |
36dfb11c TT |
8239 | ui_out_text (uiout, " (call to syscall "); |
8240 | else | |
8241 | ui_out_text (uiout, " (returned from syscall "); | |
a96d9b2e | 8242 | |
36dfb11c TT |
8243 | if (s.name == NULL || ui_out_is_mi_like_p (uiout)) |
8244 | ui_out_field_int (uiout, "syscall-number", last.value.syscall_number); | |
8245 | if (s.name != NULL) | |
8246 | ui_out_field_string (uiout, "syscall-name", s.name); | |
8247 | ||
8248 | ui_out_text (uiout, "), "); | |
a96d9b2e SDJ |
8249 | |
8250 | return PRINT_SRC_AND_LOC; | |
8251 | } | |
8252 | ||
8253 | /* Implement the "print_one" breakpoint_ops method for syscall | |
8254 | catchpoints. */ | |
8255 | ||
8256 | static void | |
8257 | print_one_catch_syscall (struct breakpoint *b, | |
f1310107 | 8258 | struct bp_location **last_loc) |
a96d9b2e | 8259 | { |
be5c67c1 | 8260 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
a96d9b2e | 8261 | struct value_print_options opts; |
79a45e25 | 8262 | struct ui_out *uiout = current_uiout; |
a96d9b2e SDJ |
8263 | |
8264 | get_user_print_options (&opts); | |
4a64f543 MS |
8265 | /* Field 4, the address, is omitted (which makes the columns not |
8266 | line up too nicely with the headers, but the effect is relatively | |
8267 | readable). */ | |
a96d9b2e SDJ |
8268 | if (opts.addressprint) |
8269 | ui_out_field_skip (uiout, "addr"); | |
8270 | annotate_field (5); | |
8271 | ||
be5c67c1 PA |
8272 | if (c->syscalls_to_be_caught |
8273 | && VEC_length (int, c->syscalls_to_be_caught) > 1) | |
a96d9b2e SDJ |
8274 | ui_out_text (uiout, "syscalls \""); |
8275 | else | |
8276 | ui_out_text (uiout, "syscall \""); | |
8277 | ||
be5c67c1 | 8278 | if (c->syscalls_to_be_caught) |
a96d9b2e SDJ |
8279 | { |
8280 | int i, iter; | |
8281 | char *text = xstrprintf ("%s", ""); | |
cc59ec59 | 8282 | |
a96d9b2e | 8283 | for (i = 0; |
be5c67c1 | 8284 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8285 | i++) |
8286 | { | |
8287 | char *x = text; | |
8288 | struct syscall s; | |
8289 | get_syscall_by_number (iter, &s); | |
8290 | ||
8291 | if (s.name != NULL) | |
8292 | text = xstrprintf ("%s%s, ", text, s.name); | |
8293 | else | |
8294 | text = xstrprintf ("%s%d, ", text, iter); | |
8295 | ||
8296 | /* We have to xfree the last 'text' (now stored at 'x') | |
e5dd4106 | 8297 | because xstrprintf dynamically allocates new space for it |
a96d9b2e SDJ |
8298 | on every call. */ |
8299 | xfree (x); | |
8300 | } | |
8301 | /* Remove the last comma. */ | |
8302 | text[strlen (text) - 2] = '\0'; | |
8303 | ui_out_field_string (uiout, "what", text); | |
8304 | } | |
8305 | else | |
8306 | ui_out_field_string (uiout, "what", "<any syscall>"); | |
8307 | ui_out_text (uiout, "\" "); | |
8ac3646f TT |
8308 | |
8309 | if (ui_out_is_mi_like_p (uiout)) | |
8310 | ui_out_field_string (uiout, "catch-type", "syscall"); | |
a96d9b2e SDJ |
8311 | } |
8312 | ||
8313 | /* Implement the "print_mention" breakpoint_ops method for syscall | |
8314 | catchpoints. */ | |
8315 | ||
8316 | static void | |
8317 | print_mention_catch_syscall (struct breakpoint *b) | |
8318 | { | |
be5c67c1 PA |
8319 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8320 | ||
8321 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
8322 | { |
8323 | int i, iter; | |
8324 | ||
be5c67c1 | 8325 | if (VEC_length (int, c->syscalls_to_be_caught) > 1) |
a96d9b2e SDJ |
8326 | printf_filtered (_("Catchpoint %d (syscalls"), b->number); |
8327 | else | |
8328 | printf_filtered (_("Catchpoint %d (syscall"), b->number); | |
8329 | ||
8330 | for (i = 0; | |
be5c67c1 | 8331 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
8332 | i++) |
8333 | { | |
8334 | struct syscall s; | |
8335 | get_syscall_by_number (iter, &s); | |
8336 | ||
8337 | if (s.name) | |
8338 | printf_filtered (" '%s' [%d]", s.name, s.number); | |
8339 | else | |
8340 | printf_filtered (" %d", s.number); | |
8341 | } | |
8342 | printf_filtered (")"); | |
8343 | } | |
8344 | else | |
8345 | printf_filtered (_("Catchpoint %d (any syscall)"), | |
8346 | b->number); | |
8347 | } | |
8348 | ||
6149aea9 PA |
8349 | /* Implement the "print_recreate" breakpoint_ops method for syscall |
8350 | catchpoints. */ | |
8351 | ||
8352 | static void | |
8353 | print_recreate_catch_syscall (struct breakpoint *b, struct ui_file *fp) | |
8354 | { | |
be5c67c1 PA |
8355 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) b; |
8356 | ||
6149aea9 PA |
8357 | fprintf_unfiltered (fp, "catch syscall"); |
8358 | ||
be5c67c1 | 8359 | if (c->syscalls_to_be_caught) |
6149aea9 PA |
8360 | { |
8361 | int i, iter; | |
8362 | ||
8363 | for (i = 0; | |
be5c67c1 | 8364 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
6149aea9 PA |
8365 | i++) |
8366 | { | |
8367 | struct syscall s; | |
8368 | ||
8369 | get_syscall_by_number (iter, &s); | |
8370 | if (s.name) | |
8371 | fprintf_unfiltered (fp, " %s", s.name); | |
8372 | else | |
8373 | fprintf_unfiltered (fp, " %d", s.number); | |
8374 | } | |
8375 | } | |
d9b3f62e | 8376 | print_recreate_thread (b, fp); |
6149aea9 PA |
8377 | } |
8378 | ||
a96d9b2e SDJ |
8379 | /* The breakpoint_ops structure to be used in syscall catchpoints. */ |
8380 | ||
2060206e | 8381 | static struct breakpoint_ops catch_syscall_breakpoint_ops; |
a96d9b2e SDJ |
8382 | |
8383 | /* Returns non-zero if 'b' is a syscall catchpoint. */ | |
8384 | ||
8385 | static int | |
8386 | syscall_catchpoint_p (struct breakpoint *b) | |
8387 | { | |
8388 | return (b->ops == &catch_syscall_breakpoint_ops); | |
8389 | } | |
8390 | ||
346774a9 PA |
8391 | /* Initialize a new breakpoint of the bp_catchpoint kind. If TEMPFLAG |
8392 | is non-zero, then make the breakpoint temporary. If COND_STRING is | |
8393 | not NULL, then store it in the breakpoint. OPS, if not NULL, is | |
8394 | the breakpoint_ops structure associated to the catchpoint. */ | |
ce78b96d | 8395 | |
ab04a2af | 8396 | void |
346774a9 PA |
8397 | init_catchpoint (struct breakpoint *b, |
8398 | struct gdbarch *gdbarch, int tempflag, | |
8399 | char *cond_string, | |
c0a91b2b | 8400 | const struct breakpoint_ops *ops) |
c906108c | 8401 | { |
c5aa993b | 8402 | struct symtab_and_line sal; |
346774a9 | 8403 | |
fe39c653 | 8404 | init_sal (&sal); |
6c95b8df | 8405 | sal.pspace = current_program_space; |
c5aa993b | 8406 | |
28010a5d | 8407 | init_raw_breakpoint (b, gdbarch, sal, bp_catchpoint, ops); |
ce78b96d | 8408 | |
1b36a34b | 8409 | b->cond_string = (cond_string == NULL) ? NULL : xstrdup (cond_string); |
b5de0fa7 | 8410 | b->disposition = tempflag ? disp_del : disp_donttouch; |
346774a9 PA |
8411 | } |
8412 | ||
28010a5d | 8413 | void |
3ea46bff | 8414 | install_breakpoint (int internal, struct breakpoint *b, int update_gll) |
c56053d2 PA |
8415 | { |
8416 | add_to_breakpoint_chain (b); | |
3a5c3e22 | 8417 | set_breakpoint_number (internal, b); |
558a9d82 YQ |
8418 | if (is_tracepoint (b)) |
8419 | set_tracepoint_count (breakpoint_count); | |
3a5c3e22 PA |
8420 | if (!internal) |
8421 | mention (b); | |
c56053d2 | 8422 | observer_notify_breakpoint_created (b); |
3ea46bff YQ |
8423 | |
8424 | if (update_gll) | |
8425 | update_global_location_list (1); | |
c56053d2 PA |
8426 | } |
8427 | ||
9b70b993 | 8428 | static void |
a6d9a66e UW |
8429 | create_fork_vfork_event_catchpoint (struct gdbarch *gdbarch, |
8430 | int tempflag, char *cond_string, | |
c0a91b2b | 8431 | const struct breakpoint_ops *ops) |
c906108c | 8432 | { |
e29a4733 | 8433 | struct fork_catchpoint *c = XNEW (struct fork_catchpoint); |
ce78b96d | 8434 | |
e29a4733 PA |
8435 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, ops); |
8436 | ||
8437 | c->forked_inferior_pid = null_ptid; | |
8438 | ||
3ea46bff | 8439 | install_breakpoint (0, &c->base, 1); |
c906108c SS |
8440 | } |
8441 | ||
fe798b75 JB |
8442 | /* Exec catchpoints. */ |
8443 | ||
b4d90040 PA |
8444 | /* An instance of this type is used to represent an exec catchpoint. |
8445 | It includes a "struct breakpoint" as a kind of base class; users | |
8446 | downcast to "struct breakpoint *" when needed. A breakpoint is | |
8447 | really of this type iff its ops pointer points to | |
8448 | CATCH_EXEC_BREAKPOINT_OPS. */ | |
8449 | ||
8450 | struct exec_catchpoint | |
8451 | { | |
8452 | /* The base class. */ | |
8453 | struct breakpoint base; | |
8454 | ||
8455 | /* Filename of a program whose exec triggered this catchpoint. | |
8456 | This field is only valid immediately after this catchpoint has | |
8457 | triggered. */ | |
8458 | char *exec_pathname; | |
8459 | }; | |
8460 | ||
8461 | /* Implement the "dtor" breakpoint_ops method for exec | |
8462 | catchpoints. */ | |
8463 | ||
8464 | static void | |
8465 | dtor_catch_exec (struct breakpoint *b) | |
8466 | { | |
8467 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; | |
8468 | ||
8469 | xfree (c->exec_pathname); | |
348d480f | 8470 | |
2060206e | 8471 | base_breakpoint_ops.dtor (b); |
b4d90040 PA |
8472 | } |
8473 | ||
77b06cd7 TJB |
8474 | static int |
8475 | insert_catch_exec (struct bp_location *bl) | |
c906108c | 8476 | { |
77b06cd7 | 8477 | return target_insert_exec_catchpoint (PIDGET (inferior_ptid)); |
fe798b75 | 8478 | } |
c906108c | 8479 | |
fe798b75 | 8480 | static int |
77b06cd7 | 8481 | remove_catch_exec (struct bp_location *bl) |
fe798b75 JB |
8482 | { |
8483 | return target_remove_exec_catchpoint (PIDGET (inferior_ptid)); | |
8484 | } | |
c906108c | 8485 | |
fe798b75 | 8486 | static int |
f1310107 | 8487 | breakpoint_hit_catch_exec (const struct bp_location *bl, |
09ac7c10 TT |
8488 | struct address_space *aspace, CORE_ADDR bp_addr, |
8489 | const struct target_waitstatus *ws) | |
fe798b75 | 8490 | { |
b4d90040 PA |
8491 | struct exec_catchpoint *c = (struct exec_catchpoint *) bl->owner; |
8492 | ||
f90263c1 TT |
8493 | if (ws->kind != TARGET_WAITKIND_EXECD) |
8494 | return 0; | |
8495 | ||
8496 | c->exec_pathname = xstrdup (ws->value.execd_pathname); | |
8497 | return 1; | |
fe798b75 | 8498 | } |
c906108c | 8499 | |
fe798b75 | 8500 | static enum print_stop_action |
348d480f | 8501 | print_it_catch_exec (bpstat bs) |
fe798b75 | 8502 | { |
36dfb11c | 8503 | struct ui_out *uiout = current_uiout; |
348d480f | 8504 | struct breakpoint *b = bs->breakpoint_at; |
b4d90040 PA |
8505 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
8506 | ||
fe798b75 | 8507 | annotate_catchpoint (b->number); |
36dfb11c TT |
8508 | if (b->disposition == disp_del) |
8509 | ui_out_text (uiout, "\nTemporary catchpoint "); | |
8510 | else | |
8511 | ui_out_text (uiout, "\nCatchpoint "); | |
8512 | if (ui_out_is_mi_like_p (uiout)) | |
8513 | { | |
8514 | ui_out_field_string (uiout, "reason", | |
8515 | async_reason_lookup (EXEC_ASYNC_EXEC)); | |
8516 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
8517 | } | |
8518 | ui_out_field_int (uiout, "bkptno", b->number); | |
8519 | ui_out_text (uiout, " (exec'd "); | |
8520 | ui_out_field_string (uiout, "new-exec", c->exec_pathname); | |
8521 | ui_out_text (uiout, "), "); | |
8522 | ||
fe798b75 | 8523 | return PRINT_SRC_AND_LOC; |
c906108c SS |
8524 | } |
8525 | ||
fe798b75 | 8526 | static void |
a6d9a66e | 8527 | print_one_catch_exec (struct breakpoint *b, struct bp_location **last_loc) |
fe798b75 | 8528 | { |
b4d90040 | 8529 | struct exec_catchpoint *c = (struct exec_catchpoint *) b; |
fe798b75 | 8530 | struct value_print_options opts; |
79a45e25 | 8531 | struct ui_out *uiout = current_uiout; |
fe798b75 JB |
8532 | |
8533 | get_user_print_options (&opts); | |
8534 | ||
8535 | /* Field 4, the address, is omitted (which makes the columns | |
8536 | not line up too nicely with the headers, but the effect | |
8537 | is relatively readable). */ | |
8538 | if (opts.addressprint) | |
8539 | ui_out_field_skip (uiout, "addr"); | |
8540 | annotate_field (5); | |
8541 | ui_out_text (uiout, "exec"); | |
b4d90040 | 8542 | if (c->exec_pathname != NULL) |
fe798b75 JB |
8543 | { |
8544 | ui_out_text (uiout, ", program \""); | |
b4d90040 | 8545 | ui_out_field_string (uiout, "what", c->exec_pathname); |
fe798b75 JB |
8546 | ui_out_text (uiout, "\" "); |
8547 | } | |
8ac3646f TT |
8548 | |
8549 | if (ui_out_is_mi_like_p (uiout)) | |
8550 | ui_out_field_string (uiout, "catch-type", "exec"); | |
fe798b75 JB |
8551 | } |
8552 | ||
8553 | static void | |
8554 | print_mention_catch_exec (struct breakpoint *b) | |
8555 | { | |
8556 | printf_filtered (_("Catchpoint %d (exec)"), b->number); | |
8557 | } | |
8558 | ||
6149aea9 PA |
8559 | /* Implement the "print_recreate" breakpoint_ops method for exec |
8560 | catchpoints. */ | |
8561 | ||
8562 | static void | |
8563 | print_recreate_catch_exec (struct breakpoint *b, struct ui_file *fp) | |
8564 | { | |
8565 | fprintf_unfiltered (fp, "catch exec"); | |
d9b3f62e | 8566 | print_recreate_thread (b, fp); |
6149aea9 PA |
8567 | } |
8568 | ||
2060206e | 8569 | static struct breakpoint_ops catch_exec_breakpoint_ops; |
fe798b75 | 8570 | |
a96d9b2e SDJ |
8571 | static void |
8572 | create_syscall_event_catchpoint (int tempflag, VEC(int) *filter, | |
c0a91b2b | 8573 | const struct breakpoint_ops *ops) |
a96d9b2e | 8574 | { |
be5c67c1 | 8575 | struct syscall_catchpoint *c; |
a96d9b2e | 8576 | struct gdbarch *gdbarch = get_current_arch (); |
a96d9b2e | 8577 | |
be5c67c1 PA |
8578 | c = XNEW (struct syscall_catchpoint); |
8579 | init_catchpoint (&c->base, gdbarch, tempflag, NULL, ops); | |
8580 | c->syscalls_to_be_caught = filter; | |
a96d9b2e | 8581 | |
3ea46bff | 8582 | install_breakpoint (0, &c->base, 1); |
a96d9b2e SDJ |
8583 | } |
8584 | ||
c906108c | 8585 | static int |
fba45db2 | 8586 | hw_breakpoint_used_count (void) |
c906108c | 8587 | { |
c906108c | 8588 | int i = 0; |
f1310107 TJB |
8589 | struct breakpoint *b; |
8590 | struct bp_location *bl; | |
c906108c SS |
8591 | |
8592 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8593 | { |
d6b74ac4 | 8594 | if (b->type == bp_hardware_breakpoint && breakpoint_enabled (b)) |
f1310107 TJB |
8595 | for (bl = b->loc; bl; bl = bl->next) |
8596 | { | |
8597 | /* Special types of hardware breakpoints may use more than | |
8598 | one register. */ | |
348d480f | 8599 | i += b->ops->resources_needed (bl); |
f1310107 | 8600 | } |
c5aa993b | 8601 | } |
c906108c SS |
8602 | |
8603 | return i; | |
8604 | } | |
8605 | ||
a1398e0c PA |
8606 | /* Returns the resources B would use if it were a hardware |
8607 | watchpoint. */ | |
8608 | ||
c906108c | 8609 | static int |
a1398e0c | 8610 | hw_watchpoint_use_count (struct breakpoint *b) |
c906108c | 8611 | { |
c906108c | 8612 | int i = 0; |
e09342b5 | 8613 | struct bp_location *bl; |
c906108c | 8614 | |
a1398e0c PA |
8615 | if (!breakpoint_enabled (b)) |
8616 | return 0; | |
8617 | ||
8618 | for (bl = b->loc; bl; bl = bl->next) | |
8619 | { | |
8620 | /* Special types of hardware watchpoints may use more than | |
8621 | one register. */ | |
8622 | i += b->ops->resources_needed (bl); | |
8623 | } | |
8624 | ||
8625 | return i; | |
8626 | } | |
8627 | ||
8628 | /* Returns the sum the used resources of all hardware watchpoints of | |
8629 | type TYPE in the breakpoints list. Also returns in OTHER_TYPE_USED | |
8630 | the sum of the used resources of all hardware watchpoints of other | |
8631 | types _not_ TYPE. */ | |
8632 | ||
8633 | static int | |
8634 | hw_watchpoint_used_count_others (struct breakpoint *except, | |
8635 | enum bptype type, int *other_type_used) | |
8636 | { | |
8637 | int i = 0; | |
8638 | struct breakpoint *b; | |
8639 | ||
c906108c SS |
8640 | *other_type_used = 0; |
8641 | ALL_BREAKPOINTS (b) | |
e09342b5 | 8642 | { |
a1398e0c PA |
8643 | if (b == except) |
8644 | continue; | |
e09342b5 TJB |
8645 | if (!breakpoint_enabled (b)) |
8646 | continue; | |
8647 | ||
a1398e0c PA |
8648 | if (b->type == type) |
8649 | i += hw_watchpoint_use_count (b); | |
8650 | else if (is_hardware_watchpoint (b)) | |
8651 | *other_type_used = 1; | |
e09342b5 TJB |
8652 | } |
8653 | ||
c906108c SS |
8654 | return i; |
8655 | } | |
8656 | ||
c906108c | 8657 | void |
fba45db2 | 8658 | disable_watchpoints_before_interactive_call_start (void) |
c906108c | 8659 | { |
c5aa993b | 8660 | struct breakpoint *b; |
c906108c SS |
8661 | |
8662 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8663 | { |
cc60f2e3 | 8664 | if (is_watchpoint (b) && breakpoint_enabled (b)) |
c5aa993b | 8665 | { |
b5de0fa7 | 8666 | b->enable_state = bp_call_disabled; |
b60e7edf | 8667 | update_global_location_list (0); |
c5aa993b JM |
8668 | } |
8669 | } | |
c906108c SS |
8670 | } |
8671 | ||
8672 | void | |
fba45db2 | 8673 | enable_watchpoints_after_interactive_call_stop (void) |
c906108c | 8674 | { |
c5aa993b | 8675 | struct breakpoint *b; |
c906108c SS |
8676 | |
8677 | ALL_BREAKPOINTS (b) | |
c5aa993b | 8678 | { |
cc60f2e3 | 8679 | if (is_watchpoint (b) && b->enable_state == bp_call_disabled) |
c5aa993b | 8680 | { |
b5de0fa7 | 8681 | b->enable_state = bp_enabled; |
b60e7edf | 8682 | update_global_location_list (1); |
c5aa993b JM |
8683 | } |
8684 | } | |
c906108c SS |
8685 | } |
8686 | ||
8bea4e01 UW |
8687 | void |
8688 | disable_breakpoints_before_startup (void) | |
8689 | { | |
6c95b8df | 8690 | current_program_space->executing_startup = 1; |
f8eba3c6 | 8691 | update_global_location_list (0); |
8bea4e01 UW |
8692 | } |
8693 | ||
8694 | void | |
8695 | enable_breakpoints_after_startup (void) | |
8696 | { | |
6c95b8df | 8697 | current_program_space->executing_startup = 0; |
f8eba3c6 | 8698 | breakpoint_re_set (); |
8bea4e01 UW |
8699 | } |
8700 | ||
c906108c SS |
8701 | |
8702 | /* Set a breakpoint that will evaporate an end of command | |
8703 | at address specified by SAL. | |
8704 | Restrict it to frame FRAME if FRAME is nonzero. */ | |
8705 | ||
8706 | struct breakpoint * | |
a6d9a66e UW |
8707 | set_momentary_breakpoint (struct gdbarch *gdbarch, struct symtab_and_line sal, |
8708 | struct frame_id frame_id, enum bptype type) | |
c906108c | 8709 | { |
52f0bd74 | 8710 | struct breakpoint *b; |
edb3359d | 8711 | |
193facb3 JK |
8712 | /* If FRAME_ID is valid, it should be a real frame, not an inlined or |
8713 | tail-called one. */ | |
8714 | gdb_assert (!frame_id_artificial_p (frame_id)); | |
edb3359d | 8715 | |
06edf0c0 | 8716 | b = set_raw_breakpoint (gdbarch, sal, type, &momentary_breakpoint_ops); |
b5de0fa7 EZ |
8717 | b->enable_state = bp_enabled; |
8718 | b->disposition = disp_donttouch; | |
818dd999 | 8719 | b->frame_id = frame_id; |
c906108c | 8720 | |
4a64f543 MS |
8721 | /* If we're debugging a multi-threaded program, then we want |
8722 | momentary breakpoints to be active in only a single thread of | |
8723 | control. */ | |
39f77062 KB |
8724 | if (in_thread_list (inferior_ptid)) |
8725 | b->thread = pid_to_thread_id (inferior_ptid); | |
c906108c | 8726 | |
b60e7edf | 8727 | update_global_location_list_nothrow (1); |
74960c60 | 8728 | |
c906108c SS |
8729 | return b; |
8730 | } | |
611c83ae | 8731 | |
06edf0c0 PA |
8732 | /* Make a momentary breakpoint based on the master breakpoint ORIG. |
8733 | The new breakpoint will have type TYPE, and use OPS as it | |
8734 | breakpoint_ops. */ | |
e58b0e63 | 8735 | |
06edf0c0 PA |
8736 | static struct breakpoint * |
8737 | momentary_breakpoint_from_master (struct breakpoint *orig, | |
8738 | enum bptype type, | |
c0a91b2b | 8739 | const struct breakpoint_ops *ops) |
e58b0e63 PA |
8740 | { |
8741 | struct breakpoint *copy; | |
8742 | ||
06edf0c0 | 8743 | copy = set_raw_breakpoint_without_location (orig->gdbarch, type, ops); |
e58b0e63 | 8744 | copy->loc = allocate_bp_location (copy); |
0e30163f | 8745 | set_breakpoint_location_function (copy->loc, 1); |
e58b0e63 | 8746 | |
a6d9a66e | 8747 | copy->loc->gdbarch = orig->loc->gdbarch; |
e58b0e63 PA |
8748 | copy->loc->requested_address = orig->loc->requested_address; |
8749 | copy->loc->address = orig->loc->address; | |
8750 | copy->loc->section = orig->loc->section; | |
6c95b8df | 8751 | copy->loc->pspace = orig->loc->pspace; |
55aa24fb | 8752 | copy->loc->probe = orig->loc->probe; |
f8eba3c6 | 8753 | copy->loc->line_number = orig->loc->line_number; |
2f202fde | 8754 | copy->loc->symtab = orig->loc->symtab; |
e58b0e63 PA |
8755 | copy->frame_id = orig->frame_id; |
8756 | copy->thread = orig->thread; | |
6c95b8df | 8757 | copy->pspace = orig->pspace; |
e58b0e63 PA |
8758 | |
8759 | copy->enable_state = bp_enabled; | |
8760 | copy->disposition = disp_donttouch; | |
8761 | copy->number = internal_breakpoint_number--; | |
8762 | ||
8763 | update_global_location_list_nothrow (0); | |
8764 | return copy; | |
8765 | } | |
8766 | ||
06edf0c0 PA |
8767 | /* Make a deep copy of momentary breakpoint ORIG. Returns NULL if |
8768 | ORIG is NULL. */ | |
8769 | ||
8770 | struct breakpoint * | |
8771 | clone_momentary_breakpoint (struct breakpoint *orig) | |
8772 | { | |
8773 | /* If there's nothing to clone, then return nothing. */ | |
8774 | if (orig == NULL) | |
8775 | return NULL; | |
8776 | ||
8777 | return momentary_breakpoint_from_master (orig, orig->type, orig->ops); | |
8778 | } | |
8779 | ||
611c83ae | 8780 | struct breakpoint * |
a6d9a66e UW |
8781 | set_momentary_breakpoint_at_pc (struct gdbarch *gdbarch, CORE_ADDR pc, |
8782 | enum bptype type) | |
611c83ae PA |
8783 | { |
8784 | struct symtab_and_line sal; | |
8785 | ||
8786 | sal = find_pc_line (pc, 0); | |
8787 | sal.pc = pc; | |
8788 | sal.section = find_pc_overlay (pc); | |
8789 | sal.explicit_pc = 1; | |
8790 | ||
a6d9a66e | 8791 | return set_momentary_breakpoint (gdbarch, sal, null_frame_id, type); |
611c83ae | 8792 | } |
c906108c | 8793 | \f |
c5aa993b | 8794 | |
c906108c SS |
8795 | /* Tell the user we have just set a breakpoint B. */ |
8796 | ||
8797 | static void | |
fba45db2 | 8798 | mention (struct breakpoint *b) |
c906108c | 8799 | { |
348d480f | 8800 | b->ops->print_mention (b); |
79a45e25 | 8801 | if (ui_out_is_mi_like_p (current_uiout)) |
fb40c209 | 8802 | return; |
c906108c SS |
8803 | printf_filtered ("\n"); |
8804 | } | |
c906108c | 8805 | \f |
c5aa993b | 8806 | |
0d381245 | 8807 | static struct bp_location * |
39d61571 | 8808 | add_location_to_breakpoint (struct breakpoint *b, |
0d381245 VP |
8809 | const struct symtab_and_line *sal) |
8810 | { | |
8811 | struct bp_location *loc, **tmp; | |
3742cc8b YQ |
8812 | CORE_ADDR adjusted_address; |
8813 | struct gdbarch *loc_gdbarch = get_sal_arch (*sal); | |
8814 | ||
8815 | if (loc_gdbarch == NULL) | |
8816 | loc_gdbarch = b->gdbarch; | |
8817 | ||
8818 | /* Adjust the breakpoint's address prior to allocating a location. | |
8819 | Once we call allocate_bp_location(), that mostly uninitialized | |
8820 | location will be placed on the location chain. Adjustment of the | |
8821 | breakpoint may cause target_read_memory() to be called and we do | |
8822 | not want its scan of the location chain to find a breakpoint and | |
8823 | location that's only been partially initialized. */ | |
8824 | adjusted_address = adjust_breakpoint_address (loc_gdbarch, | |
8825 | sal->pc, b->type); | |
0d381245 | 8826 | |
d30113d4 | 8827 | /* Sort the locations by their ADDRESS. */ |
39d61571 | 8828 | loc = allocate_bp_location (b); |
d30113d4 JK |
8829 | for (tmp = &(b->loc); *tmp != NULL && (*tmp)->address <= adjusted_address; |
8830 | tmp = &((*tmp)->next)) | |
0d381245 | 8831 | ; |
d30113d4 | 8832 | loc->next = *tmp; |
0d381245 | 8833 | *tmp = loc; |
3742cc8b | 8834 | |
0d381245 | 8835 | loc->requested_address = sal->pc; |
3742cc8b | 8836 | loc->address = adjusted_address; |
6c95b8df | 8837 | loc->pspace = sal->pspace; |
55aa24fb | 8838 | loc->probe = sal->probe; |
6c95b8df | 8839 | gdb_assert (loc->pspace != NULL); |
0d381245 | 8840 | loc->section = sal->section; |
3742cc8b | 8841 | loc->gdbarch = loc_gdbarch; |
f8eba3c6 | 8842 | loc->line_number = sal->line; |
2f202fde | 8843 | loc->symtab = sal->symtab; |
f8eba3c6 | 8844 | |
0e30163f JK |
8845 | set_breakpoint_location_function (loc, |
8846 | sal->explicit_pc || sal->explicit_line); | |
0d381245 VP |
8847 | return loc; |
8848 | } | |
514f746b AR |
8849 | \f |
8850 | ||
8851 | /* Return 1 if LOC is pointing to a permanent breakpoint, | |
8852 | return 0 otherwise. */ | |
8853 | ||
8854 | static int | |
8855 | bp_loc_is_permanent (struct bp_location *loc) | |
8856 | { | |
8857 | int len; | |
8858 | CORE_ADDR addr; | |
1afeeb75 | 8859 | const gdb_byte *bpoint; |
514f746b | 8860 | gdb_byte *target_mem; |
939c61fa JK |
8861 | struct cleanup *cleanup; |
8862 | int retval = 0; | |
514f746b AR |
8863 | |
8864 | gdb_assert (loc != NULL); | |
8865 | ||
8866 | addr = loc->address; | |
1afeeb75 | 8867 | bpoint = gdbarch_breakpoint_from_pc (loc->gdbarch, &addr, &len); |
514f746b | 8868 | |
939c61fa | 8869 | /* Software breakpoints unsupported? */ |
1afeeb75 | 8870 | if (bpoint == NULL) |
939c61fa JK |
8871 | return 0; |
8872 | ||
514f746b AR |
8873 | target_mem = alloca (len); |
8874 | ||
939c61fa JK |
8875 | /* Enable the automatic memory restoration from breakpoints while |
8876 | we read the memory. Otherwise we could say about our temporary | |
8877 | breakpoints they are permanent. */ | |
6c95b8df PA |
8878 | cleanup = save_current_space_and_thread (); |
8879 | ||
8880 | switch_to_program_space_and_thread (loc->pspace); | |
8881 | make_show_memory_breakpoints_cleanup (0); | |
939c61fa | 8882 | |
514f746b | 8883 | if (target_read_memory (loc->address, target_mem, len) == 0 |
1afeeb75 | 8884 | && memcmp (target_mem, bpoint, len) == 0) |
939c61fa | 8885 | retval = 1; |
514f746b | 8886 | |
939c61fa JK |
8887 | do_cleanups (cleanup); |
8888 | ||
8889 | return retval; | |
514f746b AR |
8890 | } |
8891 | ||
e7e0cddf SS |
8892 | /* Build a command list for the dprintf corresponding to the current |
8893 | settings of the dprintf style options. */ | |
8894 | ||
8895 | static void | |
8896 | update_dprintf_command_list (struct breakpoint *b) | |
8897 | { | |
8898 | char *dprintf_args = b->extra_string; | |
8899 | char *printf_line = NULL; | |
8900 | ||
8901 | if (!dprintf_args) | |
8902 | return; | |
8903 | ||
8904 | dprintf_args = skip_spaces (dprintf_args); | |
8905 | ||
8906 | /* Allow a comma, as it may have terminated a location, but don't | |
8907 | insist on it. */ | |
8908 | if (*dprintf_args == ',') | |
8909 | ++dprintf_args; | |
8910 | dprintf_args = skip_spaces (dprintf_args); | |
8911 | ||
8912 | if (*dprintf_args != '"') | |
8913 | error (_("Bad format string, missing '\"'.")); | |
8914 | ||
d3ce09f5 | 8915 | if (strcmp (dprintf_style, dprintf_style_gdb) == 0) |
e7e0cddf | 8916 | printf_line = xstrprintf ("printf %s", dprintf_args); |
d3ce09f5 | 8917 | else if (strcmp (dprintf_style, dprintf_style_call) == 0) |
e7e0cddf SS |
8918 | { |
8919 | if (!dprintf_function) | |
8920 | error (_("No function supplied for dprintf call")); | |
8921 | ||
8922 | if (dprintf_channel && strlen (dprintf_channel) > 0) | |
8923 | printf_line = xstrprintf ("call (void) %s (%s,%s)", | |
8924 | dprintf_function, | |
8925 | dprintf_channel, | |
8926 | dprintf_args); | |
8927 | else | |
8928 | printf_line = xstrprintf ("call (void) %s (%s)", | |
8929 | dprintf_function, | |
8930 | dprintf_args); | |
8931 | } | |
d3ce09f5 SS |
8932 | else if (strcmp (dprintf_style, dprintf_style_agent) == 0) |
8933 | { | |
8934 | if (target_can_run_breakpoint_commands ()) | |
8935 | printf_line = xstrprintf ("agent-printf %s", dprintf_args); | |
8936 | else | |
8937 | { | |
8938 | warning (_("Target cannot run dprintf commands, falling back to GDB printf")); | |
8939 | printf_line = xstrprintf ("printf %s", dprintf_args); | |
8940 | } | |
8941 | } | |
e7e0cddf SS |
8942 | else |
8943 | internal_error (__FILE__, __LINE__, | |
8944 | _("Invalid dprintf style.")); | |
8945 | ||
f28045c2 | 8946 | gdb_assert (printf_line != NULL); |
e7e0cddf | 8947 | /* Manufacture a printf/continue sequence. */ |
f28045c2 YQ |
8948 | { |
8949 | struct command_line *printf_cmd_line, *cont_cmd_line = NULL; | |
e7e0cddf | 8950 | |
f28045c2 YQ |
8951 | if (strcmp (dprintf_style, dprintf_style_agent) != 0) |
8952 | { | |
8953 | cont_cmd_line = xmalloc (sizeof (struct command_line)); | |
8954 | cont_cmd_line->control_type = simple_control; | |
8955 | cont_cmd_line->body_count = 0; | |
8956 | cont_cmd_line->body_list = NULL; | |
8957 | cont_cmd_line->next = NULL; | |
8958 | cont_cmd_line->line = xstrdup ("continue"); | |
8959 | } | |
e7e0cddf | 8960 | |
f28045c2 YQ |
8961 | printf_cmd_line = xmalloc (sizeof (struct command_line)); |
8962 | printf_cmd_line->control_type = simple_control; | |
8963 | printf_cmd_line->body_count = 0; | |
8964 | printf_cmd_line->body_list = NULL; | |
8965 | printf_cmd_line->next = cont_cmd_line; | |
8966 | printf_cmd_line->line = printf_line; | |
e7e0cddf | 8967 | |
f28045c2 YQ |
8968 | breakpoint_set_commands (b, printf_cmd_line); |
8969 | } | |
e7e0cddf SS |
8970 | } |
8971 | ||
8972 | /* Update all dprintf commands, making their command lists reflect | |
8973 | current style settings. */ | |
8974 | ||
8975 | static void | |
8976 | update_dprintf_commands (char *args, int from_tty, | |
8977 | struct cmd_list_element *c) | |
8978 | { | |
8979 | struct breakpoint *b; | |
8980 | ||
8981 | ALL_BREAKPOINTS (b) | |
8982 | { | |
8983 | if (b->type == bp_dprintf) | |
8984 | update_dprintf_command_list (b); | |
8985 | } | |
8986 | } | |
c3f6f71d | 8987 | |
018d34a4 VP |
8988 | /* Create a breakpoint with SAL as location. Use ADDR_STRING |
8989 | as textual description of the location, and COND_STRING | |
db107f19 | 8990 | as condition expression. */ |
018d34a4 VP |
8991 | |
8992 | static void | |
d9b3f62e PA |
8993 | init_breakpoint_sal (struct breakpoint *b, struct gdbarch *gdbarch, |
8994 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 8995 | char *filter, char *cond_string, |
e7e0cddf | 8996 | char *extra_string, |
d9b3f62e PA |
8997 | enum bptype type, enum bpdisp disposition, |
8998 | int thread, int task, int ignore_count, | |
c0a91b2b | 8999 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9000 | int enabled, int internal, unsigned flags, |
9001 | int display_canonical) | |
018d34a4 | 9002 | { |
0d381245 | 9003 | int i; |
018d34a4 VP |
9004 | |
9005 | if (type == bp_hardware_breakpoint) | |
9006 | { | |
fbbd034e AS |
9007 | int target_resources_ok; |
9008 | ||
9009 | i = hw_breakpoint_used_count (); | |
9010 | target_resources_ok = | |
9011 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
018d34a4 VP |
9012 | i + 1, 0); |
9013 | if (target_resources_ok == 0) | |
9014 | error (_("No hardware breakpoint support in the target.")); | |
9015 | else if (target_resources_ok < 0) | |
9016 | error (_("Hardware breakpoints used exceeds limit.")); | |
9017 | } | |
9018 | ||
6c95b8df PA |
9019 | gdb_assert (sals.nelts > 0); |
9020 | ||
0d381245 VP |
9021 | for (i = 0; i < sals.nelts; ++i) |
9022 | { | |
9023 | struct symtab_and_line sal = sals.sals[i]; | |
9024 | struct bp_location *loc; | |
9025 | ||
9026 | if (from_tty) | |
5af949e3 UW |
9027 | { |
9028 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); | |
9029 | if (!loc_gdbarch) | |
9030 | loc_gdbarch = gdbarch; | |
9031 | ||
9032 | describe_other_breakpoints (loc_gdbarch, | |
6c95b8df | 9033 | sal.pspace, sal.pc, sal.section, thread); |
5af949e3 | 9034 | } |
0d381245 VP |
9035 | |
9036 | if (i == 0) | |
9037 | { | |
d9b3f62e | 9038 | init_raw_breakpoint (b, gdbarch, sal, type, ops); |
0d381245 | 9039 | b->thread = thread; |
4a306c9a | 9040 | b->task = task; |
855a6e68 | 9041 | |
0d381245 | 9042 | b->cond_string = cond_string; |
e7e0cddf | 9043 | b->extra_string = extra_string; |
0d381245 | 9044 | b->ignore_count = ignore_count; |
41447f92 | 9045 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
0d381245 | 9046 | b->disposition = disposition; |
6c95b8df | 9047 | |
44f238bb PA |
9048 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9049 | b->loc->inserted = 1; | |
9050 | ||
0fb4aa4b PA |
9051 | if (type == bp_static_tracepoint) |
9052 | { | |
d9b3f62e | 9053 | struct tracepoint *t = (struct tracepoint *) b; |
0fb4aa4b PA |
9054 | struct static_tracepoint_marker marker; |
9055 | ||
983af33b | 9056 | if (strace_marker_p (b)) |
0fb4aa4b PA |
9057 | { |
9058 | /* We already know the marker exists, otherwise, we | |
9059 | wouldn't see a sal for it. */ | |
9060 | char *p = &addr_string[3]; | |
9061 | char *endp; | |
9062 | char *marker_str; | |
0fb4aa4b | 9063 | |
e9cafbcc | 9064 | p = skip_spaces (p); |
0fb4aa4b | 9065 | |
e9cafbcc | 9066 | endp = skip_to_space (p); |
0fb4aa4b PA |
9067 | |
9068 | marker_str = savestring (p, endp - p); | |
d9b3f62e | 9069 | t->static_trace_marker_id = marker_str; |
0fb4aa4b | 9070 | |
3e43a32a MS |
9071 | printf_filtered (_("Probed static tracepoint " |
9072 | "marker \"%s\"\n"), | |
d9b3f62e | 9073 | t->static_trace_marker_id); |
0fb4aa4b PA |
9074 | } |
9075 | else if (target_static_tracepoint_marker_at (sal.pc, &marker)) | |
9076 | { | |
d9b3f62e | 9077 | t->static_trace_marker_id = xstrdup (marker.str_id); |
0fb4aa4b PA |
9078 | release_static_tracepoint_marker (&marker); |
9079 | ||
3e43a32a MS |
9080 | printf_filtered (_("Probed static tracepoint " |
9081 | "marker \"%s\"\n"), | |
d9b3f62e | 9082 | t->static_trace_marker_id); |
0fb4aa4b PA |
9083 | } |
9084 | else | |
3e43a32a MS |
9085 | warning (_("Couldn't determine the static " |
9086 | "tracepoint marker to probe")); | |
0fb4aa4b PA |
9087 | } |
9088 | ||
0d381245 VP |
9089 | loc = b->loc; |
9090 | } | |
9091 | else | |
018d34a4 | 9092 | { |
39d61571 | 9093 | loc = add_location_to_breakpoint (b, &sal); |
44f238bb PA |
9094 | if ((flags & CREATE_BREAKPOINT_FLAGS_INSERTED) != 0) |
9095 | loc->inserted = 1; | |
0d381245 VP |
9096 | } |
9097 | ||
514f746b AR |
9098 | if (bp_loc_is_permanent (loc)) |
9099 | make_breakpoint_permanent (b); | |
9100 | ||
0d381245 VP |
9101 | if (b->cond_string) |
9102 | { | |
bbc13ae3 KS |
9103 | const char *arg = b->cond_string; |
9104 | ||
1bb9788d TT |
9105 | loc->cond = parse_exp_1 (&arg, loc->address, |
9106 | block_for_pc (loc->address), 0); | |
0d381245 | 9107 | if (*arg) |
588ae58c | 9108 | error (_("Garbage '%s' follows condition"), arg); |
018d34a4 | 9109 | } |
e7e0cddf SS |
9110 | |
9111 | /* Dynamic printf requires and uses additional arguments on the | |
9112 | command line, otherwise it's an error. */ | |
9113 | if (type == bp_dprintf) | |
9114 | { | |
9115 | if (b->extra_string) | |
9116 | update_dprintf_command_list (b); | |
9117 | else | |
9118 | error (_("Format string required")); | |
9119 | } | |
9120 | else if (b->extra_string) | |
588ae58c | 9121 | error (_("Garbage '%s' at end of command"), b->extra_string); |
855a6e68 | 9122 | } |
018d34a4 | 9123 | |
56435ebe | 9124 | b->display_canonical = display_canonical; |
018d34a4 VP |
9125 | if (addr_string) |
9126 | b->addr_string = addr_string; | |
9127 | else | |
9128 | /* addr_string has to be used or breakpoint_re_set will delete | |
9129 | me. */ | |
5af949e3 UW |
9130 | b->addr_string |
9131 | = xstrprintf ("*%s", paddress (b->loc->gdbarch, b->loc->address)); | |
f8eba3c6 | 9132 | b->filter = filter; |
d9b3f62e | 9133 | } |
018d34a4 | 9134 | |
d9b3f62e PA |
9135 | static void |
9136 | create_breakpoint_sal (struct gdbarch *gdbarch, | |
9137 | struct symtabs_and_lines sals, char *addr_string, | |
f8eba3c6 | 9138 | char *filter, char *cond_string, |
e7e0cddf | 9139 | char *extra_string, |
d9b3f62e PA |
9140 | enum bptype type, enum bpdisp disposition, |
9141 | int thread, int task, int ignore_count, | |
c0a91b2b | 9142 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb PA |
9143 | int enabled, int internal, unsigned flags, |
9144 | int display_canonical) | |
d9b3f62e PA |
9145 | { |
9146 | struct breakpoint *b; | |
9147 | struct cleanup *old_chain; | |
9148 | ||
9149 | if (is_tracepoint_type (type)) | |
9150 | { | |
9151 | struct tracepoint *t; | |
9152 | ||
9153 | t = XCNEW (struct tracepoint); | |
9154 | b = &t->base; | |
9155 | } | |
9156 | else | |
9157 | b = XNEW (struct breakpoint); | |
9158 | ||
9159 | old_chain = make_cleanup (xfree, b); | |
9160 | ||
9161 | init_breakpoint_sal (b, gdbarch, | |
9162 | sals, addr_string, | |
e7e0cddf | 9163 | filter, cond_string, extra_string, |
d9b3f62e PA |
9164 | type, disposition, |
9165 | thread, task, ignore_count, | |
9166 | ops, from_tty, | |
44f238bb PA |
9167 | enabled, internal, flags, |
9168 | display_canonical); | |
d9b3f62e PA |
9169 | discard_cleanups (old_chain); |
9170 | ||
3ea46bff | 9171 | install_breakpoint (internal, b, 0); |
018d34a4 VP |
9172 | } |
9173 | ||
9174 | /* Add SALS.nelts breakpoints to the breakpoint table. For each | |
9175 | SALS.sal[i] breakpoint, include the corresponding ADDR_STRING[i] | |
9176 | value. COND_STRING, if not NULL, specified the condition to be | |
9177 | used for all breakpoints. Essentially the only case where | |
9178 | SALS.nelts is not 1 is when we set a breakpoint on an overloaded | |
9179 | function. In that case, it's still not possible to specify | |
9180 | separate conditions for different overloaded functions, so | |
9181 | we take just a single condition string. | |
9182 | ||
c3f6f71d | 9183 | NOTE: If the function succeeds, the caller is expected to cleanup |
018d34a4 | 9184 | the arrays ADDR_STRING, COND_STRING, and SALS (but not the |
c3f6f71d JM |
9185 | array contents). If the function fails (error() is called), the |
9186 | caller is expected to cleanups both the ADDR_STRING, COND_STRING, | |
4a64f543 | 9187 | COND and SALS arrays and each of those arrays contents. */ |
c906108c SS |
9188 | |
9189 | static void | |
8cdf0e15 | 9190 | create_breakpoints_sal (struct gdbarch *gdbarch, |
7efd8fc2 | 9191 | struct linespec_result *canonical, |
e7e0cddf | 9192 | char *cond_string, char *extra_string, |
8cdf0e15 VP |
9193 | enum bptype type, enum bpdisp disposition, |
9194 | int thread, int task, int ignore_count, | |
c0a91b2b | 9195 | const struct breakpoint_ops *ops, int from_tty, |
44f238bb | 9196 | int enabled, int internal, unsigned flags) |
c906108c | 9197 | { |
018d34a4 | 9198 | int i; |
f8eba3c6 | 9199 | struct linespec_sals *lsal; |
cc59ec59 | 9200 | |
f8eba3c6 TT |
9201 | if (canonical->pre_expanded) |
9202 | gdb_assert (VEC_length (linespec_sals, canonical->sals) == 1); | |
9203 | ||
9204 | for (i = 0; VEC_iterate (linespec_sals, canonical->sals, i, lsal); ++i) | |
c3f6f71d | 9205 | { |
f8eba3c6 TT |
9206 | /* Note that 'addr_string' can be NULL in the case of a plain |
9207 | 'break', without arguments. */ | |
9208 | char *addr_string = (canonical->addr_string | |
9209 | ? xstrdup (canonical->addr_string) | |
9210 | : NULL); | |
9211 | char *filter_string = lsal->canonical ? xstrdup (lsal->canonical) : NULL; | |
9212 | struct cleanup *inner = make_cleanup (xfree, addr_string); | |
0d381245 | 9213 | |
f8eba3c6 TT |
9214 | make_cleanup (xfree, filter_string); |
9215 | create_breakpoint_sal (gdbarch, lsal->sals, | |
9216 | addr_string, | |
9217 | filter_string, | |
e7e0cddf SS |
9218 | cond_string, extra_string, |
9219 | type, disposition, | |
84f4c1fe | 9220 | thread, task, ignore_count, ops, |
44f238bb | 9221 | from_tty, enabled, internal, flags, |
56435ebe | 9222 | canonical->special_display); |
f8eba3c6 | 9223 | discard_cleanups (inner); |
c3f6f71d | 9224 | } |
c3f6f71d | 9225 | } |
c906108c | 9226 | |
9998af43 | 9227 | /* Parse ADDRESS which is assumed to be a SAL specification possibly |
c3f6f71d | 9228 | followed by conditionals. On return, SALS contains an array of SAL |
4a64f543 | 9229 | addresses found. ADDR_STRING contains a vector of (canonical) |
9998af43 TJB |
9230 | address strings. ADDRESS points to the end of the SAL. |
9231 | ||
9232 | The array and the line spec strings are allocated on the heap, it is | |
9233 | the caller's responsibility to free them. */ | |
c906108c | 9234 | |
b9362cc7 | 9235 | static void |
c3f6f71d | 9236 | parse_breakpoint_sals (char **address, |
58438ac1 | 9237 | struct linespec_result *canonical) |
c3f6f71d | 9238 | { |
c3f6f71d | 9239 | /* If no arg given, or if first arg is 'if ', use the default |
4a64f543 | 9240 | breakpoint. */ |
c3f6f71d JM |
9241 | if ((*address) == NULL |
9242 | || (strncmp ((*address), "if", 2) == 0 && isspace ((*address)[2]))) | |
c906108c | 9243 | { |
1bfeeb0f JL |
9244 | /* The last displayed codepoint, if it's valid, is our default breakpoint |
9245 | address. */ | |
9246 | if (last_displayed_sal_is_valid ()) | |
c906108c | 9247 | { |
f8eba3c6 | 9248 | struct linespec_sals lsal; |
c3f6f71d | 9249 | struct symtab_and_line sal; |
1c8cdcb1 | 9250 | CORE_ADDR pc; |
cc59ec59 | 9251 | |
4a64f543 | 9252 | init_sal (&sal); /* Initialize to zeroes. */ |
f8eba3c6 | 9253 | lsal.sals.sals = (struct symtab_and_line *) |
c906108c | 9254 | xmalloc (sizeof (struct symtab_and_line)); |
1bfeeb0f JL |
9255 | |
9256 | /* Set sal's pspace, pc, symtab, and line to the values | |
1c8cdcb1 JK |
9257 | corresponding to the last call to print_frame_info. |
9258 | Be sure to reinitialize LINE with NOTCURRENT == 0 | |
9259 | as the breakpoint line number is inappropriate otherwise. | |
9260 | find_pc_line would adjust PC, re-set it back. */ | |
1bfeeb0f | 9261 | get_last_displayed_sal (&sal); |
1c8cdcb1 JK |
9262 | pc = sal.pc; |
9263 | sal = find_pc_line (pc, 0); | |
00903456 | 9264 | |
4a64f543 | 9265 | /* "break" without arguments is equivalent to "break *PC" |
1bfeeb0f JL |
9266 | where PC is the last displayed codepoint's address. So |
9267 | make sure to set sal.explicit_pc to prevent GDB from | |
9268 | trying to expand the list of sals to include all other | |
9269 | instances with the same symtab and line. */ | |
1c8cdcb1 | 9270 | sal.pc = pc; |
00903456 JK |
9271 | sal.explicit_pc = 1; |
9272 | ||
f8eba3c6 TT |
9273 | lsal.sals.sals[0] = sal; |
9274 | lsal.sals.nelts = 1; | |
9275 | lsal.canonical = NULL; | |
9276 | ||
9277 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
c906108c SS |
9278 | } |
9279 | else | |
8a3fe4f8 | 9280 | error (_("No default breakpoint address now.")); |
c906108c SS |
9281 | } |
9282 | else | |
9283 | { | |
cc80f267 JK |
9284 | struct symtab_and_line cursal = get_current_source_symtab_and_line (); |
9285 | ||
c906108c | 9286 | /* Force almost all breakpoints to be in terms of the |
4a64f543 MS |
9287 | current_source_symtab (which is decode_line_1's default). |
9288 | This should produce the results we want almost all of the | |
cc80f267 JK |
9289 | time while leaving default_breakpoint_* alone. |
9290 | ||
9291 | ObjC: However, don't match an Objective-C method name which | |
9292 | may have a '+' or '-' succeeded by a '['. */ | |
9293 | if (last_displayed_sal_is_valid () | |
9294 | && (!cursal.symtab | |
9295 | || ((strchr ("+-", (*address)[0]) != NULL) | |
9296 | && ((*address)[1] != '[')))) | |
f8eba3c6 TT |
9297 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
9298 | get_last_displayed_symtab (), | |
9299 | get_last_displayed_line (), | |
9300 | canonical, NULL, NULL); | |
c906108c | 9301 | else |
f8eba3c6 | 9302 | decode_line_full (address, DECODE_LINE_FUNFIRSTLINE, |
cc80f267 | 9303 | cursal.symtab, cursal.line, canonical, NULL, NULL); |
c906108c | 9304 | } |
c3f6f71d | 9305 | } |
c906108c | 9306 | |
c906108c | 9307 | |
c3f6f71d | 9308 | /* Convert each SAL into a real PC. Verify that the PC can be |
4a64f543 | 9309 | inserted as a breakpoint. If it can't throw an error. */ |
c906108c | 9310 | |
b9362cc7 | 9311 | static void |
23e7acfb | 9312 | breakpoint_sals_to_pc (struct symtabs_and_lines *sals) |
c3f6f71d JM |
9313 | { |
9314 | int i; | |
cc59ec59 | 9315 | |
c3f6f71d | 9316 | for (i = 0; i < sals->nelts; i++) |
ee53e872 | 9317 | resolve_sal_pc (&sals->sals[i]); |
c3f6f71d JM |
9318 | } |
9319 | ||
7a697b8d SS |
9320 | /* Fast tracepoints may have restrictions on valid locations. For |
9321 | instance, a fast tracepoint using a jump instead of a trap will | |
9322 | likely have to overwrite more bytes than a trap would, and so can | |
9323 | only be placed where the instruction is longer than the jump, or a | |
9324 | multi-instruction sequence does not have a jump into the middle of | |
9325 | it, etc. */ | |
9326 | ||
9327 | static void | |
9328 | check_fast_tracepoint_sals (struct gdbarch *gdbarch, | |
9329 | struct symtabs_and_lines *sals) | |
9330 | { | |
9331 | int i, rslt; | |
9332 | struct symtab_and_line *sal; | |
9333 | char *msg; | |
9334 | struct cleanup *old_chain; | |
9335 | ||
9336 | for (i = 0; i < sals->nelts; i++) | |
9337 | { | |
f8eba3c6 TT |
9338 | struct gdbarch *sarch; |
9339 | ||
7a697b8d SS |
9340 | sal = &sals->sals[i]; |
9341 | ||
f8eba3c6 TT |
9342 | sarch = get_sal_arch (*sal); |
9343 | /* We fall back to GDBARCH if there is no architecture | |
9344 | associated with SAL. */ | |
9345 | if (sarch == NULL) | |
9346 | sarch = gdbarch; | |
9347 | rslt = gdbarch_fast_tracepoint_valid_at (sarch, sal->pc, | |
7a697b8d SS |
9348 | NULL, &msg); |
9349 | old_chain = make_cleanup (xfree, msg); | |
9350 | ||
9351 | if (!rslt) | |
9352 | error (_("May not have a fast tracepoint at 0x%s%s"), | |
f8eba3c6 | 9353 | paddress (sarch, sal->pc), (msg ? msg : "")); |
7a697b8d SS |
9354 | |
9355 | do_cleanups (old_chain); | |
9356 | } | |
9357 | } | |
9358 | ||
af4908ba KS |
9359 | /* Issue an invalid thread ID error. */ |
9360 | ||
9361 | static void ATTRIBUTE_NORETURN | |
9362 | invalid_thread_id_error (int id) | |
9363 | { | |
9364 | error (_("Unknown thread %d."), id); | |
9365 | } | |
9366 | ||
018d34a4 VP |
9367 | /* Given TOK, a string specification of condition and thread, as |
9368 | accepted by the 'break' command, extract the condition | |
9369 | string and thread number and set *COND_STRING and *THREAD. | |
4a64f543 | 9370 | PC identifies the context at which the condition should be parsed. |
018d34a4 VP |
9371 | If no condition is found, *COND_STRING is set to NULL. |
9372 | If no thread is found, *THREAD is set to -1. */ | |
d634f2de JB |
9373 | |
9374 | static void | |
bbc13ae3 | 9375 | find_condition_and_thread (const char *tok, CORE_ADDR pc, |
e7e0cddf SS |
9376 | char **cond_string, int *thread, int *task, |
9377 | char **rest) | |
018d34a4 VP |
9378 | { |
9379 | *cond_string = NULL; | |
9380 | *thread = -1; | |
ed1d1739 KS |
9381 | *task = 0; |
9382 | *rest = NULL; | |
9383 | ||
018d34a4 VP |
9384 | while (tok && *tok) |
9385 | { | |
bbc13ae3 | 9386 | const char *end_tok; |
018d34a4 | 9387 | int toklen; |
bbc13ae3 KS |
9388 | const char *cond_start = NULL; |
9389 | const char *cond_end = NULL; | |
cc59ec59 | 9390 | |
bbc13ae3 | 9391 | tok = skip_spaces_const (tok); |
e7e0cddf SS |
9392 | |
9393 | if ((*tok == '"' || *tok == ',') && rest) | |
9394 | { | |
9395 | *rest = savestring (tok, strlen (tok)); | |
9396 | return; | |
9397 | } | |
9398 | ||
bbc13ae3 | 9399 | end_tok = skip_to_space_const (tok); |
d634f2de | 9400 | |
018d34a4 | 9401 | toklen = end_tok - tok; |
d634f2de | 9402 | |
018d34a4 VP |
9403 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) |
9404 | { | |
f7545552 TT |
9405 | struct expression *expr; |
9406 | ||
018d34a4 | 9407 | tok = cond_start = end_tok + 1; |
1bb9788d | 9408 | expr = parse_exp_1 (&tok, pc, block_for_pc (pc), 0); |
f7545552 | 9409 | xfree (expr); |
018d34a4 | 9410 | cond_end = tok; |
d634f2de | 9411 | *cond_string = savestring (cond_start, cond_end - cond_start); |
018d34a4 VP |
9412 | } |
9413 | else if (toklen >= 1 && strncmp (tok, "thread", toklen) == 0) | |
9414 | { | |
9415 | char *tmptok; | |
d634f2de | 9416 | |
018d34a4 | 9417 | tok = end_tok + 1; |
bbc13ae3 | 9418 | *thread = strtol (tok, &tmptok, 0); |
018d34a4 VP |
9419 | if (tok == tmptok) |
9420 | error (_("Junk after thread keyword.")); | |
9421 | if (!valid_thread_id (*thread)) | |
af4908ba | 9422 | invalid_thread_id_error (*thread); |
bbc13ae3 | 9423 | tok = tmptok; |
018d34a4 | 9424 | } |
4a306c9a JB |
9425 | else if (toklen >= 1 && strncmp (tok, "task", toklen) == 0) |
9426 | { | |
9427 | char *tmptok; | |
9428 | ||
9429 | tok = end_tok + 1; | |
bbc13ae3 | 9430 | *task = strtol (tok, &tmptok, 0); |
4a306c9a JB |
9431 | if (tok == tmptok) |
9432 | error (_("Junk after task keyword.")); | |
9433 | if (!valid_task_id (*task)) | |
b6199126 | 9434 | error (_("Unknown task %d."), *task); |
bbc13ae3 | 9435 | tok = tmptok; |
4a306c9a | 9436 | } |
e7e0cddf SS |
9437 | else if (rest) |
9438 | { | |
9439 | *rest = savestring (tok, strlen (tok)); | |
ccab2054 | 9440 | return; |
e7e0cddf | 9441 | } |
018d34a4 VP |
9442 | else |
9443 | error (_("Junk at end of arguments.")); | |
9444 | } | |
9445 | } | |
9446 | ||
0fb4aa4b PA |
9447 | /* Decode a static tracepoint marker spec. */ |
9448 | ||
9449 | static struct symtabs_and_lines | |
9450 | decode_static_tracepoint_spec (char **arg_p) | |
9451 | { | |
9452 | VEC(static_tracepoint_marker_p) *markers = NULL; | |
9453 | struct symtabs_and_lines sals; | |
0fb4aa4b PA |
9454 | struct cleanup *old_chain; |
9455 | char *p = &(*arg_p)[3]; | |
9456 | char *endp; | |
9457 | char *marker_str; | |
9458 | int i; | |
9459 | ||
e9cafbcc | 9460 | p = skip_spaces (p); |
0fb4aa4b | 9461 | |
e9cafbcc | 9462 | endp = skip_to_space (p); |
0fb4aa4b PA |
9463 | |
9464 | marker_str = savestring (p, endp - p); | |
9465 | old_chain = make_cleanup (xfree, marker_str); | |
9466 | ||
9467 | markers = target_static_tracepoint_markers_by_strid (marker_str); | |
9468 | if (VEC_empty(static_tracepoint_marker_p, markers)) | |
9469 | error (_("No known static tracepoint marker named %s"), marker_str); | |
9470 | ||
9471 | sals.nelts = VEC_length(static_tracepoint_marker_p, markers); | |
9472 | sals.sals = xmalloc (sizeof *sals.sals * sals.nelts); | |
9473 | ||
9474 | for (i = 0; i < sals.nelts; i++) | |
9475 | { | |
9476 | struct static_tracepoint_marker *marker; | |
9477 | ||
9478 | marker = VEC_index (static_tracepoint_marker_p, markers, i); | |
9479 | ||
9480 | init_sal (&sals.sals[i]); | |
9481 | ||
9482 | sals.sals[i] = find_pc_line (marker->address, 0); | |
9483 | sals.sals[i].pc = marker->address; | |
9484 | ||
9485 | release_static_tracepoint_marker (marker); | |
9486 | } | |
9487 | ||
9488 | do_cleanups (old_chain); | |
9489 | ||
9490 | *arg_p = endp; | |
9491 | return sals; | |
9492 | } | |
9493 | ||
fd9b8c24 PA |
9494 | /* Set a breakpoint. This function is shared between CLI and MI |
9495 | functions for setting a breakpoint. This function has two major | |
f6de8ec2 PA |
9496 | modes of operations, selected by the PARSE_ARG parameter. If |
9497 | non-zero, the function will parse ARG, extracting location, | |
9498 | condition, thread and extra string. Otherwise, ARG is just the | |
9499 | breakpoint's location, with condition, thread, and extra string | |
9500 | specified by the COND_STRING, THREAD and EXTRA_STRING parameters. | |
9501 | If INTERNAL is non-zero, the breakpoint number will be allocated | |
9502 | from the internal breakpoint count. Returns true if any breakpoint | |
9503 | was created; false otherwise. */ | |
0101ce28 | 9504 | |
8cdf0e15 VP |
9505 | int |
9506 | create_breakpoint (struct gdbarch *gdbarch, | |
e7e0cddf SS |
9507 | char *arg, char *cond_string, |
9508 | int thread, char *extra_string, | |
f6de8ec2 | 9509 | int parse_arg, |
0fb4aa4b | 9510 | int tempflag, enum bptype type_wanted, |
8cdf0e15 VP |
9511 | int ignore_count, |
9512 | enum auto_boolean pending_break_support, | |
c0a91b2b | 9513 | const struct breakpoint_ops *ops, |
44f238bb PA |
9514 | int from_tty, int enabled, int internal, |
9515 | unsigned flags) | |
c3f6f71d | 9516 | { |
b78a6381 | 9517 | volatile struct gdb_exception e; |
f8eba3c6 | 9518 | char *copy_arg = NULL; |
c3f6f71d | 9519 | char *addr_start = arg; |
7efd8fc2 | 9520 | struct linespec_result canonical; |
c3f6f71d | 9521 | struct cleanup *old_chain; |
80c99de1 | 9522 | struct cleanup *bkpt_chain = NULL; |
0101ce28 | 9523 | int pending = 0; |
4a306c9a | 9524 | int task = 0; |
86b17b60 | 9525 | int prev_bkpt_count = breakpoint_count; |
c3f6f71d | 9526 | |
348d480f PA |
9527 | gdb_assert (ops != NULL); |
9528 | ||
7efd8fc2 | 9529 | init_linespec_result (&canonical); |
c3f6f71d | 9530 | |
b78a6381 TT |
9531 | TRY_CATCH (e, RETURN_MASK_ALL) |
9532 | { | |
983af33b SDJ |
9533 | ops->create_sals_from_address (&arg, &canonical, type_wanted, |
9534 | addr_start, ©_arg); | |
b78a6381 | 9535 | } |
0101ce28 JJ |
9536 | |
9537 | /* If caller is interested in rc value from parse, set value. */ | |
05ff989b | 9538 | switch (e.reason) |
0101ce28 | 9539 | { |
983af33b SDJ |
9540 | case GDB_NO_ERROR: |
9541 | if (VEC_empty (linespec_sals, canonical.sals)) | |
9542 | return 0; | |
9543 | break; | |
05ff989b AC |
9544 | case RETURN_ERROR: |
9545 | switch (e.error) | |
0101ce28 | 9546 | { |
05ff989b | 9547 | case NOT_FOUND_ERROR: |
0101ce28 | 9548 | |
05ff989b AC |
9549 | /* If pending breakpoint support is turned off, throw |
9550 | error. */ | |
fa8d40ab JJ |
9551 | |
9552 | if (pending_break_support == AUTO_BOOLEAN_FALSE) | |
723a2275 VP |
9553 | throw_exception (e); |
9554 | ||
9555 | exception_print (gdb_stderr, e); | |
fa8d40ab | 9556 | |
05ff989b AC |
9557 | /* If pending breakpoint support is auto query and the user |
9558 | selects no, then simply return the error code. */ | |
059fb39f | 9559 | if (pending_break_support == AUTO_BOOLEAN_AUTO |
bfccc43c YQ |
9560 | && !nquery (_("Make %s pending on future shared library load? "), |
9561 | bptype_string (type_wanted))) | |
fd9b8c24 | 9562 | return 0; |
fa8d40ab | 9563 | |
05ff989b AC |
9564 | /* At this point, either the user was queried about setting |
9565 | a pending breakpoint and selected yes, or pending | |
9566 | breakpoint behavior is on and thus a pending breakpoint | |
9567 | is defaulted on behalf of the user. */ | |
f8eba3c6 TT |
9568 | { |
9569 | struct linespec_sals lsal; | |
9570 | ||
9571 | copy_arg = xstrdup (addr_start); | |
9572 | lsal.canonical = xstrdup (copy_arg); | |
9573 | lsal.sals.nelts = 1; | |
9574 | lsal.sals.sals = XNEW (struct symtab_and_line); | |
9575 | init_sal (&lsal.sals.sals[0]); | |
9576 | pending = 1; | |
9577 | VEC_safe_push (linespec_sals, canonical.sals, &lsal); | |
9578 | } | |
05ff989b AC |
9579 | break; |
9580 | default: | |
98deb0da | 9581 | throw_exception (e); |
0101ce28 | 9582 | } |
2abae994 | 9583 | break; |
05ff989b | 9584 | default: |
983af33b | 9585 | throw_exception (e); |
0101ce28 | 9586 | } |
c3f6f71d | 9587 | |
4a64f543 | 9588 | /* Create a chain of things that always need to be cleaned up. */ |
f8eba3c6 | 9589 | old_chain = make_cleanup_destroy_linespec_result (&canonical); |
c3f6f71d | 9590 | |
c3f6f71d JM |
9591 | /* ----------------------------- SNIP ----------------------------- |
9592 | Anything added to the cleanup chain beyond this point is assumed | |
9593 | to be part of a breakpoint. If the breakpoint create succeeds | |
80c99de1 PA |
9594 | then the memory is not reclaimed. */ |
9595 | bkpt_chain = make_cleanup (null_cleanup, 0); | |
c3f6f71d | 9596 | |
c3f6f71d JM |
9597 | /* Resolve all line numbers to PC's and verify that the addresses |
9598 | are ok for the target. */ | |
0101ce28 | 9599 | if (!pending) |
f8eba3c6 TT |
9600 | { |
9601 | int ix; | |
9602 | struct linespec_sals *iter; | |
9603 | ||
9604 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9605 | breakpoint_sals_to_pc (&iter->sals); | |
9606 | } | |
c3f6f71d | 9607 | |
7a697b8d | 9608 | /* Fast tracepoints may have additional restrictions on location. */ |
bfccc43c | 9609 | if (!pending && type_wanted == bp_fast_tracepoint) |
f8eba3c6 TT |
9610 | { |
9611 | int ix; | |
9612 | struct linespec_sals *iter; | |
9613 | ||
9614 | for (ix = 0; VEC_iterate (linespec_sals, canonical.sals, ix, iter); ++ix) | |
9615 | check_fast_tracepoint_sals (gdbarch, &iter->sals); | |
9616 | } | |
7a697b8d | 9617 | |
c3f6f71d JM |
9618 | /* Verify that condition can be parsed, before setting any |
9619 | breakpoints. Allocate a separate condition expression for each | |
4a64f543 | 9620 | breakpoint. */ |
0101ce28 | 9621 | if (!pending) |
c3f6f71d | 9622 | { |
f8eba3c6 TT |
9623 | struct linespec_sals *lsal; |
9624 | ||
9625 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
9626 | ||
f6de8ec2 | 9627 | if (parse_arg) |
72b2ff0e | 9628 | { |
e7e0cddf | 9629 | char *rest; |
72b2ff0e VP |
9630 | /* Here we only parse 'arg' to separate condition |
9631 | from thread number, so parsing in context of first | |
9632 | sal is OK. When setting the breakpoint we'll | |
9633 | re-parse it in context of each sal. */ | |
ed1d1739 | 9634 | |
f8eba3c6 | 9635 | find_condition_and_thread (arg, lsal->sals.sals[0].pc, &cond_string, |
e7e0cddf | 9636 | &thread, &task, &rest); |
72b2ff0e VP |
9637 | if (cond_string) |
9638 | make_cleanup (xfree, cond_string); | |
e7e0cddf SS |
9639 | if (rest) |
9640 | make_cleanup (xfree, rest); | |
9641 | if (rest) | |
9642 | extra_string = rest; | |
72b2ff0e | 9643 | } |
2f069f6f | 9644 | else |
72b2ff0e | 9645 | { |
f6de8ec2 PA |
9646 | if (*arg != '\0') |
9647 | error (_("Garbage '%s' at end of location"), arg); | |
9648 | ||
72b2ff0e VP |
9649 | /* Create a private copy of condition string. */ |
9650 | if (cond_string) | |
9651 | { | |
9652 | cond_string = xstrdup (cond_string); | |
9653 | make_cleanup (xfree, cond_string); | |
9654 | } | |
e7e0cddf SS |
9655 | /* Create a private copy of any extra string. */ |
9656 | if (extra_string) | |
9657 | { | |
9658 | extra_string = xstrdup (extra_string); | |
9659 | make_cleanup (xfree, extra_string); | |
9660 | } | |
72b2ff0e | 9661 | } |
0fb4aa4b | 9662 | |
983af33b | 9663 | ops->create_breakpoints_sal (gdbarch, &canonical, lsal, |
e7e0cddf | 9664 | cond_string, extra_string, type_wanted, |
d9b3f62e PA |
9665 | tempflag ? disp_del : disp_donttouch, |
9666 | thread, task, ignore_count, ops, | |
44f238bb | 9667 | from_tty, enabled, internal, flags); |
c906108c | 9668 | } |
0101ce28 JJ |
9669 | else |
9670 | { | |
0101ce28 JJ |
9671 | struct breakpoint *b; |
9672 | ||
0101ce28 JJ |
9673 | make_cleanup (xfree, copy_arg); |
9674 | ||
bfccc43c YQ |
9675 | if (is_tracepoint_type (type_wanted)) |
9676 | { | |
9677 | struct tracepoint *t; | |
9678 | ||
9679 | t = XCNEW (struct tracepoint); | |
9680 | b = &t->base; | |
9681 | } | |
9682 | else | |
9683 | b = XNEW (struct breakpoint); | |
9684 | ||
9685 | init_raw_breakpoint_without_location (b, gdbarch, type_wanted, ops); | |
9686 | ||
f8eba3c6 | 9687 | b->addr_string = copy_arg; |
f6de8ec2 | 9688 | if (parse_arg) |
e12c7713 MK |
9689 | b->cond_string = NULL; |
9690 | else | |
9691 | { | |
9692 | /* Create a private copy of condition string. */ | |
9693 | if (cond_string) | |
9694 | { | |
9695 | cond_string = xstrdup (cond_string); | |
9696 | make_cleanup (xfree, cond_string); | |
9697 | } | |
9698 | b->cond_string = cond_string; | |
9699 | } | |
e7e0cddf | 9700 | b->extra_string = NULL; |
0101ce28 | 9701 | b->ignore_count = ignore_count; |
0101ce28 | 9702 | b->disposition = tempflag ? disp_del : disp_donttouch; |
0d381245 | 9703 | b->condition_not_parsed = 1; |
41447f92 | 9704 | b->enable_state = enabled ? bp_enabled : bp_disabled; |
cc72b2a2 KP |
9705 | if ((type_wanted != bp_breakpoint |
9706 | && type_wanted != bp_hardware_breakpoint) || thread != -1) | |
f8eba3c6 | 9707 | b->pspace = current_program_space; |
8bea4e01 | 9708 | |
bfccc43c | 9709 | install_breakpoint (internal, b, 0); |
0101ce28 JJ |
9710 | } |
9711 | ||
f8eba3c6 | 9712 | if (VEC_length (linespec_sals, canonical.sals) > 1) |
95a42b64 | 9713 | { |
3e43a32a MS |
9714 | warning (_("Multiple breakpoints were set.\nUse the " |
9715 | "\"delete\" command to delete unwanted breakpoints.")); | |
86b17b60 | 9716 | prev_breakpoint_count = prev_bkpt_count; |
95a42b64 TT |
9717 | } |
9718 | ||
80c99de1 PA |
9719 | /* That's it. Discard the cleanups for data inserted into the |
9720 | breakpoint. */ | |
9721 | discard_cleanups (bkpt_chain); | |
9722 | /* But cleanup everything else. */ | |
c3f6f71d | 9723 | do_cleanups (old_chain); |
217dc9e2 | 9724 | |
80c99de1 | 9725 | /* error call may happen here - have BKPT_CHAIN already discarded. */ |
217dc9e2 | 9726 | update_global_location_list (1); |
fd9b8c24 PA |
9727 | |
9728 | return 1; | |
c3f6f71d | 9729 | } |
c906108c | 9730 | |
348d480f | 9731 | /* Set a breakpoint. |
72b2ff0e VP |
9732 | ARG is a string describing breakpoint address, |
9733 | condition, and thread. | |
9734 | FLAG specifies if a breakpoint is hardware on, | |
9735 | and if breakpoint is temporary, using BP_HARDWARE_FLAG | |
9736 | and BP_TEMPFLAG. */ | |
348d480f | 9737 | |
98deb0da | 9738 | static void |
72b2ff0e | 9739 | break_command_1 (char *arg, int flag, int from_tty) |
c3f6f71d | 9740 | { |
72b2ff0e | 9741 | int tempflag = flag & BP_TEMPFLAG; |
0fb4aa4b PA |
9742 | enum bptype type_wanted = (flag & BP_HARDWAREFLAG |
9743 | ? bp_hardware_breakpoint | |
9744 | : bp_breakpoint); | |
55aa24fb SDJ |
9745 | struct breakpoint_ops *ops; |
9746 | const char *arg_cp = arg; | |
9747 | ||
9748 | /* Matching breakpoints on probes. */ | |
9749 | if (arg && probe_linespec_to_ops (&arg_cp) != NULL) | |
9750 | ops = &bkpt_probe_breakpoint_ops; | |
9751 | else | |
9752 | ops = &bkpt_breakpoint_ops; | |
c3f6f71d | 9753 | |
8cdf0e15 VP |
9754 | create_breakpoint (get_current_arch (), |
9755 | arg, | |
e7e0cddf | 9756 | NULL, 0, NULL, 1 /* parse arg */, |
0fb4aa4b | 9757 | tempflag, type_wanted, |
8cdf0e15 VP |
9758 | 0 /* Ignore count */, |
9759 | pending_break_support, | |
55aa24fb | 9760 | ops, |
8cdf0e15 | 9761 | from_tty, |
84f4c1fe | 9762 | 1 /* enabled */, |
44f238bb PA |
9763 | 0 /* internal */, |
9764 | 0); | |
c906108c SS |
9765 | } |
9766 | ||
c906108c SS |
9767 | /* Helper function for break_command_1 and disassemble_command. */ |
9768 | ||
9769 | void | |
fba45db2 | 9770 | resolve_sal_pc (struct symtab_and_line *sal) |
c906108c SS |
9771 | { |
9772 | CORE_ADDR pc; | |
9773 | ||
9774 | if (sal->pc == 0 && sal->symtab != NULL) | |
9775 | { | |
9776 | if (!find_line_pc (sal->symtab, sal->line, &pc)) | |
8a3fe4f8 | 9777 | error (_("No line %d in file \"%s\"."), |
05cba821 | 9778 | sal->line, symtab_to_filename_for_display (sal->symtab)); |
c906108c | 9779 | sal->pc = pc; |
6a048695 | 9780 | |
4a64f543 MS |
9781 | /* If this SAL corresponds to a breakpoint inserted using a line |
9782 | number, then skip the function prologue if necessary. */ | |
6a048695 | 9783 | if (sal->explicit_line) |
059acae7 | 9784 | skip_prologue_sal (sal); |
c906108c SS |
9785 | } |
9786 | ||
9787 | if (sal->section == 0 && sal->symtab != NULL) | |
9788 | { | |
9789 | struct blockvector *bv; | |
c5aa993b JM |
9790 | struct block *b; |
9791 | struct symbol *sym; | |
c906108c | 9792 | |
801e3a5b | 9793 | bv = blockvector_for_pc_sect (sal->pc, 0, &b, sal->symtab); |
c906108c SS |
9794 | if (bv != NULL) |
9795 | { | |
7f0df278 | 9796 | sym = block_linkage_function (b); |
c906108c SS |
9797 | if (sym != NULL) |
9798 | { | |
9799 | fixup_symbol_section (sym, sal->symtab->objfile); | |
e27d198c | 9800 | sal->section = SYMBOL_OBJ_SECTION (sal->symtab->objfile, sym); |
c906108c SS |
9801 | } |
9802 | else | |
9803 | { | |
4a64f543 MS |
9804 | /* It really is worthwhile to have the section, so we'll |
9805 | just have to look harder. This case can be executed | |
9806 | if we have line numbers but no functions (as can | |
9807 | happen in assembly source). */ | |
c906108c | 9808 | |
7cbd4a93 | 9809 | struct bound_minimal_symbol msym; |
6c95b8df PA |
9810 | struct cleanup *old_chain = save_current_space_and_thread (); |
9811 | ||
9812 | switch_to_program_space_and_thread (sal->pspace); | |
c906108c SS |
9813 | |
9814 | msym = lookup_minimal_symbol_by_pc (sal->pc); | |
7cbd4a93 | 9815 | if (msym.minsym) |
e27d198c | 9816 | sal->section = SYMBOL_OBJ_SECTION (msym.objfile, msym.minsym); |
6c95b8df PA |
9817 | |
9818 | do_cleanups (old_chain); | |
c906108c SS |
9819 | } |
9820 | } | |
9821 | } | |
9822 | } | |
9823 | ||
9824 | void | |
fba45db2 | 9825 | break_command (char *arg, int from_tty) |
c906108c | 9826 | { |
db107f19 | 9827 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9828 | } |
9829 | ||
c906108c | 9830 | void |
fba45db2 | 9831 | tbreak_command (char *arg, int from_tty) |
c906108c | 9832 | { |
db107f19 | 9833 | break_command_1 (arg, BP_TEMPFLAG, from_tty); |
c906108c SS |
9834 | } |
9835 | ||
c906108c | 9836 | static void |
fba45db2 | 9837 | hbreak_command (char *arg, int from_tty) |
c906108c | 9838 | { |
db107f19 | 9839 | break_command_1 (arg, BP_HARDWAREFLAG, from_tty); |
c906108c SS |
9840 | } |
9841 | ||
9842 | static void | |
fba45db2 | 9843 | thbreak_command (char *arg, int from_tty) |
c906108c | 9844 | { |
db107f19 | 9845 | break_command_1 (arg, (BP_TEMPFLAG | BP_HARDWAREFLAG), from_tty); |
c906108c SS |
9846 | } |
9847 | ||
9848 | static void | |
fba45db2 | 9849 | stop_command (char *arg, int from_tty) |
c906108c | 9850 | { |
a3f17187 | 9851 | printf_filtered (_("Specify the type of breakpoint to set.\n\ |
c906108c | 9852 | Usage: stop in <function | address>\n\ |
a3f17187 | 9853 | stop at <line>\n")); |
c906108c SS |
9854 | } |
9855 | ||
9856 | static void | |
fba45db2 | 9857 | stopin_command (char *arg, int from_tty) |
c906108c SS |
9858 | { |
9859 | int badInput = 0; | |
9860 | ||
c5aa993b | 9861 | if (arg == (char *) NULL) |
c906108c SS |
9862 | badInput = 1; |
9863 | else if (*arg != '*') | |
9864 | { | |
9865 | char *argptr = arg; | |
9866 | int hasColon = 0; | |
9867 | ||
4a64f543 | 9868 | /* Look for a ':'. If this is a line number specification, then |
53a5351d | 9869 | say it is bad, otherwise, it should be an address or |
4a64f543 | 9870 | function/method name. */ |
c906108c | 9871 | while (*argptr && !hasColon) |
c5aa993b JM |
9872 | { |
9873 | hasColon = (*argptr == ':'); | |
9874 | argptr++; | |
9875 | } | |
c906108c SS |
9876 | |
9877 | if (hasColon) | |
c5aa993b | 9878 | badInput = (*argptr != ':'); /* Not a class::method */ |
c906108c | 9879 | else |
c5aa993b | 9880 | badInput = isdigit (*arg); /* a simple line number */ |
c906108c SS |
9881 | } |
9882 | ||
9883 | if (badInput) | |
a3f17187 | 9884 | printf_filtered (_("Usage: stop in <function | address>\n")); |
c906108c | 9885 | else |
db107f19 | 9886 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9887 | } |
9888 | ||
9889 | static void | |
fba45db2 | 9890 | stopat_command (char *arg, int from_tty) |
c906108c SS |
9891 | { |
9892 | int badInput = 0; | |
9893 | ||
c5aa993b | 9894 | if (arg == (char *) NULL || *arg == '*') /* no line number */ |
c906108c SS |
9895 | badInput = 1; |
9896 | else | |
9897 | { | |
9898 | char *argptr = arg; | |
9899 | int hasColon = 0; | |
9900 | ||
4a64f543 MS |
9901 | /* Look for a ':'. If there is a '::' then get out, otherwise |
9902 | it is probably a line number. */ | |
c906108c | 9903 | while (*argptr && !hasColon) |
c5aa993b JM |
9904 | { |
9905 | hasColon = (*argptr == ':'); | |
9906 | argptr++; | |
9907 | } | |
c906108c SS |
9908 | |
9909 | if (hasColon) | |
c5aa993b | 9910 | badInput = (*argptr == ':'); /* we have class::method */ |
c906108c | 9911 | else |
c5aa993b | 9912 | badInput = !isdigit (*arg); /* not a line number */ |
c906108c SS |
9913 | } |
9914 | ||
9915 | if (badInput) | |
a3f17187 | 9916 | printf_filtered (_("Usage: stop at <line>\n")); |
c906108c | 9917 | else |
db107f19 | 9918 | break_command_1 (arg, 0, from_tty); |
c906108c SS |
9919 | } |
9920 | ||
e7e0cddf SS |
9921 | /* The dynamic printf command is mostly like a regular breakpoint, but |
9922 | with a prewired command list consisting of a single output command, | |
9923 | built from extra arguments supplied on the dprintf command | |
9924 | line. */ | |
9925 | ||
da821c7b | 9926 | static void |
e7e0cddf SS |
9927 | dprintf_command (char *arg, int from_tty) |
9928 | { | |
9929 | create_breakpoint (get_current_arch (), | |
9930 | arg, | |
9931 | NULL, 0, NULL, 1 /* parse arg */, | |
9932 | 0, bp_dprintf, | |
9933 | 0 /* Ignore count */, | |
9934 | pending_break_support, | |
9935 | &dprintf_breakpoint_ops, | |
9936 | from_tty, | |
9937 | 1 /* enabled */, | |
9938 | 0 /* internal */, | |
9939 | 0); | |
9940 | } | |
9941 | ||
d3ce09f5 SS |
9942 | static void |
9943 | agent_printf_command (char *arg, int from_tty) | |
9944 | { | |
9945 | error (_("May only run agent-printf on the target")); | |
9946 | } | |
9947 | ||
f1310107 TJB |
9948 | /* Implement the "breakpoint_hit" breakpoint_ops method for |
9949 | ranged breakpoints. */ | |
9950 | ||
9951 | static int | |
9952 | breakpoint_hit_ranged_breakpoint (const struct bp_location *bl, | |
9953 | struct address_space *aspace, | |
09ac7c10 TT |
9954 | CORE_ADDR bp_addr, |
9955 | const struct target_waitstatus *ws) | |
f1310107 | 9956 | { |
09ac7c10 | 9957 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 9958 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
9959 | return 0; |
9960 | ||
f1310107 TJB |
9961 | return breakpoint_address_match_range (bl->pspace->aspace, bl->address, |
9962 | bl->length, aspace, bp_addr); | |
9963 | } | |
9964 | ||
9965 | /* Implement the "resources_needed" breakpoint_ops method for | |
9966 | ranged breakpoints. */ | |
9967 | ||
9968 | static int | |
9969 | resources_needed_ranged_breakpoint (const struct bp_location *bl) | |
9970 | { | |
9971 | return target_ranged_break_num_registers (); | |
9972 | } | |
9973 | ||
9974 | /* Implement the "print_it" breakpoint_ops method for | |
9975 | ranged breakpoints. */ | |
9976 | ||
9977 | static enum print_stop_action | |
348d480f | 9978 | print_it_ranged_breakpoint (bpstat bs) |
f1310107 | 9979 | { |
348d480f | 9980 | struct breakpoint *b = bs->breakpoint_at; |
f1310107 | 9981 | struct bp_location *bl = b->loc; |
79a45e25 | 9982 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
9983 | |
9984 | gdb_assert (b->type == bp_hardware_breakpoint); | |
9985 | ||
9986 | /* Ranged breakpoints have only one location. */ | |
9987 | gdb_assert (bl && bl->next == NULL); | |
9988 | ||
9989 | annotate_breakpoint (b->number); | |
9990 | if (b->disposition == disp_del) | |
9991 | ui_out_text (uiout, "\nTemporary ranged breakpoint "); | |
9992 | else | |
9993 | ui_out_text (uiout, "\nRanged breakpoint "); | |
9994 | if (ui_out_is_mi_like_p (uiout)) | |
9995 | { | |
9996 | ui_out_field_string (uiout, "reason", | |
9997 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
9998 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
9999 | } | |
10000 | ui_out_field_int (uiout, "bkptno", b->number); | |
10001 | ui_out_text (uiout, ", "); | |
10002 | ||
10003 | return PRINT_SRC_AND_LOC; | |
10004 | } | |
10005 | ||
10006 | /* Implement the "print_one" breakpoint_ops method for | |
10007 | ranged breakpoints. */ | |
10008 | ||
10009 | static void | |
10010 | print_one_ranged_breakpoint (struct breakpoint *b, | |
10011 | struct bp_location **last_loc) | |
10012 | { | |
10013 | struct bp_location *bl = b->loc; | |
10014 | struct value_print_options opts; | |
79a45e25 | 10015 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10016 | |
10017 | /* Ranged breakpoints have only one location. */ | |
10018 | gdb_assert (bl && bl->next == NULL); | |
10019 | ||
10020 | get_user_print_options (&opts); | |
10021 | ||
10022 | if (opts.addressprint) | |
10023 | /* We don't print the address range here, it will be printed later | |
10024 | by print_one_detail_ranged_breakpoint. */ | |
10025 | ui_out_field_skip (uiout, "addr"); | |
10026 | annotate_field (5); | |
10027 | print_breakpoint_location (b, bl); | |
10028 | *last_loc = bl; | |
10029 | } | |
10030 | ||
10031 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10032 | ranged breakpoints. */ | |
10033 | ||
10034 | static void | |
10035 | print_one_detail_ranged_breakpoint (const struct breakpoint *b, | |
10036 | struct ui_out *uiout) | |
10037 | { | |
10038 | CORE_ADDR address_start, address_end; | |
10039 | struct bp_location *bl = b->loc; | |
f99d8bf4 PA |
10040 | struct ui_file *stb = mem_fileopen (); |
10041 | struct cleanup *cleanup = make_cleanup_ui_file_delete (stb); | |
f1310107 TJB |
10042 | |
10043 | gdb_assert (bl); | |
10044 | ||
10045 | address_start = bl->address; | |
10046 | address_end = address_start + bl->length - 1; | |
10047 | ||
10048 | ui_out_text (uiout, "\taddress range: "); | |
f99d8bf4 | 10049 | fprintf_unfiltered (stb, "[%s, %s]", |
f1310107 TJB |
10050 | print_core_address (bl->gdbarch, address_start), |
10051 | print_core_address (bl->gdbarch, address_end)); | |
10052 | ui_out_field_stream (uiout, "addr", stb); | |
10053 | ui_out_text (uiout, "\n"); | |
10054 | ||
10055 | do_cleanups (cleanup); | |
10056 | } | |
10057 | ||
10058 | /* Implement the "print_mention" breakpoint_ops method for | |
10059 | ranged breakpoints. */ | |
10060 | ||
10061 | static void | |
10062 | print_mention_ranged_breakpoint (struct breakpoint *b) | |
10063 | { | |
10064 | struct bp_location *bl = b->loc; | |
79a45e25 | 10065 | struct ui_out *uiout = current_uiout; |
f1310107 TJB |
10066 | |
10067 | gdb_assert (bl); | |
10068 | gdb_assert (b->type == bp_hardware_breakpoint); | |
10069 | ||
10070 | if (ui_out_is_mi_like_p (uiout)) | |
10071 | return; | |
10072 | ||
10073 | printf_filtered (_("Hardware assisted ranged breakpoint %d from %s to %s."), | |
10074 | b->number, paddress (bl->gdbarch, bl->address), | |
10075 | paddress (bl->gdbarch, bl->address + bl->length - 1)); | |
10076 | } | |
10077 | ||
10078 | /* Implement the "print_recreate" breakpoint_ops method for | |
10079 | ranged breakpoints. */ | |
10080 | ||
10081 | static void | |
10082 | print_recreate_ranged_breakpoint (struct breakpoint *b, struct ui_file *fp) | |
10083 | { | |
10084 | fprintf_unfiltered (fp, "break-range %s, %s", b->addr_string, | |
10085 | b->addr_string_range_end); | |
d9b3f62e | 10086 | print_recreate_thread (b, fp); |
f1310107 TJB |
10087 | } |
10088 | ||
10089 | /* The breakpoint_ops structure to be used in ranged breakpoints. */ | |
10090 | ||
2060206e | 10091 | static struct breakpoint_ops ranged_breakpoint_ops; |
f1310107 TJB |
10092 | |
10093 | /* Find the address where the end of the breakpoint range should be | |
10094 | placed, given the SAL of the end of the range. This is so that if | |
10095 | the user provides a line number, the end of the range is set to the | |
10096 | last instruction of the given line. */ | |
10097 | ||
10098 | static CORE_ADDR | |
10099 | find_breakpoint_range_end (struct symtab_and_line sal) | |
10100 | { | |
10101 | CORE_ADDR end; | |
10102 | ||
10103 | /* If the user provided a PC value, use it. Otherwise, | |
10104 | find the address of the end of the given location. */ | |
10105 | if (sal.explicit_pc) | |
10106 | end = sal.pc; | |
10107 | else | |
10108 | { | |
10109 | int ret; | |
10110 | CORE_ADDR start; | |
10111 | ||
10112 | ret = find_line_pc_range (sal, &start, &end); | |
10113 | if (!ret) | |
10114 | error (_("Could not find location of the end of the range.")); | |
10115 | ||
10116 | /* find_line_pc_range returns the start of the next line. */ | |
10117 | end--; | |
10118 | } | |
10119 | ||
10120 | return end; | |
10121 | } | |
10122 | ||
10123 | /* Implement the "break-range" CLI command. */ | |
10124 | ||
10125 | static void | |
10126 | break_range_command (char *arg, int from_tty) | |
10127 | { | |
10128 | char *arg_start, *addr_string_start, *addr_string_end; | |
10129 | struct linespec_result canonical_start, canonical_end; | |
10130 | int bp_count, can_use_bp, length; | |
10131 | CORE_ADDR end; | |
10132 | struct breakpoint *b; | |
10133 | struct symtab_and_line sal_start, sal_end; | |
f1310107 | 10134 | struct cleanup *cleanup_bkpt; |
f8eba3c6 | 10135 | struct linespec_sals *lsal_start, *lsal_end; |
f1310107 TJB |
10136 | |
10137 | /* We don't support software ranged breakpoints. */ | |
10138 | if (target_ranged_break_num_registers () < 0) | |
10139 | error (_("This target does not support hardware ranged breakpoints.")); | |
10140 | ||
10141 | bp_count = hw_breakpoint_used_count (); | |
10142 | bp_count += target_ranged_break_num_registers (); | |
10143 | can_use_bp = target_can_use_hardware_watchpoint (bp_hardware_breakpoint, | |
10144 | bp_count, 0); | |
10145 | if (can_use_bp < 0) | |
10146 | error (_("Hardware breakpoints used exceeds limit.")); | |
10147 | ||
f8eba3c6 | 10148 | arg = skip_spaces (arg); |
f1310107 TJB |
10149 | if (arg == NULL || arg[0] == '\0') |
10150 | error(_("No address range specified.")); | |
10151 | ||
f1310107 TJB |
10152 | init_linespec_result (&canonical_start); |
10153 | ||
f8eba3c6 TT |
10154 | arg_start = arg; |
10155 | parse_breakpoint_sals (&arg, &canonical_start); | |
f1310107 | 10156 | |
f8eba3c6 | 10157 | cleanup_bkpt = make_cleanup_destroy_linespec_result (&canonical_start); |
f1310107 TJB |
10158 | |
10159 | if (arg[0] != ',') | |
10160 | error (_("Too few arguments.")); | |
f8eba3c6 | 10161 | else if (VEC_empty (linespec_sals, canonical_start.sals)) |
f1310107 | 10162 | error (_("Could not find location of the beginning of the range.")); |
f8eba3c6 TT |
10163 | |
10164 | lsal_start = VEC_index (linespec_sals, canonical_start.sals, 0); | |
10165 | ||
10166 | if (VEC_length (linespec_sals, canonical_start.sals) > 1 | |
10167 | || lsal_start->sals.nelts != 1) | |
f1310107 TJB |
10168 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10169 | ||
f8eba3c6 TT |
10170 | sal_start = lsal_start->sals.sals[0]; |
10171 | addr_string_start = savestring (arg_start, arg - arg_start); | |
10172 | make_cleanup (xfree, addr_string_start); | |
f1310107 TJB |
10173 | |
10174 | arg++; /* Skip the comma. */ | |
f8eba3c6 | 10175 | arg = skip_spaces (arg); |
f1310107 TJB |
10176 | |
10177 | /* Parse the end location. */ | |
10178 | ||
f1310107 TJB |
10179 | init_linespec_result (&canonical_end); |
10180 | arg_start = arg; | |
10181 | ||
f8eba3c6 | 10182 | /* We call decode_line_full directly here instead of using |
f1310107 TJB |
10183 | parse_breakpoint_sals because we need to specify the start location's |
10184 | symtab and line as the default symtab and line for the end of the | |
10185 | range. This makes it possible to have ranges like "foo.c:27, +14", | |
10186 | where +14 means 14 lines from the start location. */ | |
f8eba3c6 TT |
10187 | decode_line_full (&arg, DECODE_LINE_FUNFIRSTLINE, |
10188 | sal_start.symtab, sal_start.line, | |
10189 | &canonical_end, NULL, NULL); | |
10190 | ||
10191 | make_cleanup_destroy_linespec_result (&canonical_end); | |
f1310107 | 10192 | |
f8eba3c6 | 10193 | if (VEC_empty (linespec_sals, canonical_end.sals)) |
f1310107 | 10194 | error (_("Could not find location of the end of the range.")); |
f8eba3c6 TT |
10195 | |
10196 | lsal_end = VEC_index (linespec_sals, canonical_end.sals, 0); | |
10197 | if (VEC_length (linespec_sals, canonical_end.sals) > 1 | |
10198 | || lsal_end->sals.nelts != 1) | |
f1310107 TJB |
10199 | error (_("Cannot create a ranged breakpoint with multiple locations.")); |
10200 | ||
f8eba3c6 TT |
10201 | sal_end = lsal_end->sals.sals[0]; |
10202 | addr_string_end = savestring (arg_start, arg - arg_start); | |
10203 | make_cleanup (xfree, addr_string_end); | |
f1310107 TJB |
10204 | |
10205 | end = find_breakpoint_range_end (sal_end); | |
10206 | if (sal_start.pc > end) | |
177b42fe | 10207 | error (_("Invalid address range, end precedes start.")); |
f1310107 TJB |
10208 | |
10209 | length = end - sal_start.pc + 1; | |
10210 | if (length < 0) | |
10211 | /* Length overflowed. */ | |
10212 | error (_("Address range too large.")); | |
10213 | else if (length == 1) | |
10214 | { | |
10215 | /* This range is simple enough to be handled by | |
10216 | the `hbreak' command. */ | |
10217 | hbreak_command (addr_string_start, 1); | |
10218 | ||
10219 | do_cleanups (cleanup_bkpt); | |
10220 | ||
10221 | return; | |
10222 | } | |
10223 | ||
10224 | /* Now set up the breakpoint. */ | |
10225 | b = set_raw_breakpoint (get_current_arch (), sal_start, | |
348d480f | 10226 | bp_hardware_breakpoint, &ranged_breakpoint_ops); |
f1310107 TJB |
10227 | set_breakpoint_count (breakpoint_count + 1); |
10228 | b->number = breakpoint_count; | |
10229 | b->disposition = disp_donttouch; | |
f8eba3c6 TT |
10230 | b->addr_string = xstrdup (addr_string_start); |
10231 | b->addr_string_range_end = xstrdup (addr_string_end); | |
f1310107 TJB |
10232 | b->loc->length = length; |
10233 | ||
f8eba3c6 | 10234 | do_cleanups (cleanup_bkpt); |
f1310107 TJB |
10235 | |
10236 | mention (b); | |
8d3788bd | 10237 | observer_notify_breakpoint_created (b); |
f1310107 TJB |
10238 | update_global_location_list (1); |
10239 | } | |
10240 | ||
4a64f543 MS |
10241 | /* Return non-zero if EXP is verified as constant. Returned zero |
10242 | means EXP is variable. Also the constant detection may fail for | |
10243 | some constant expressions and in such case still falsely return | |
10244 | zero. */ | |
2e6e3d9c | 10245 | |
65d79d4b SDJ |
10246 | static int |
10247 | watchpoint_exp_is_const (const struct expression *exp) | |
10248 | { | |
10249 | int i = exp->nelts; | |
10250 | ||
10251 | while (i > 0) | |
10252 | { | |
10253 | int oplenp, argsp; | |
10254 | ||
10255 | /* We are only interested in the descriptor of each element. */ | |
10256 | operator_length (exp, i, &oplenp, &argsp); | |
10257 | i -= oplenp; | |
10258 | ||
10259 | switch (exp->elts[i].opcode) | |
10260 | { | |
10261 | case BINOP_ADD: | |
10262 | case BINOP_SUB: | |
10263 | case BINOP_MUL: | |
10264 | case BINOP_DIV: | |
10265 | case BINOP_REM: | |
10266 | case BINOP_MOD: | |
10267 | case BINOP_LSH: | |
10268 | case BINOP_RSH: | |
10269 | case BINOP_LOGICAL_AND: | |
10270 | case BINOP_LOGICAL_OR: | |
10271 | case BINOP_BITWISE_AND: | |
10272 | case BINOP_BITWISE_IOR: | |
10273 | case BINOP_BITWISE_XOR: | |
10274 | case BINOP_EQUAL: | |
10275 | case BINOP_NOTEQUAL: | |
10276 | case BINOP_LESS: | |
10277 | case BINOP_GTR: | |
10278 | case BINOP_LEQ: | |
10279 | case BINOP_GEQ: | |
10280 | case BINOP_REPEAT: | |
10281 | case BINOP_COMMA: | |
10282 | case BINOP_EXP: | |
10283 | case BINOP_MIN: | |
10284 | case BINOP_MAX: | |
10285 | case BINOP_INTDIV: | |
10286 | case BINOP_CONCAT: | |
10287 | case BINOP_IN: | |
10288 | case BINOP_RANGE: | |
10289 | case TERNOP_COND: | |
10290 | case TERNOP_SLICE: | |
65d79d4b SDJ |
10291 | |
10292 | case OP_LONG: | |
10293 | case OP_DOUBLE: | |
10294 | case OP_DECFLOAT: | |
10295 | case OP_LAST: | |
10296 | case OP_COMPLEX: | |
10297 | case OP_STRING: | |
65d79d4b SDJ |
10298 | case OP_ARRAY: |
10299 | case OP_TYPE: | |
608b4967 TT |
10300 | case OP_TYPEOF: |
10301 | case OP_DECLTYPE: | |
6e72ca20 | 10302 | case OP_TYPEID: |
65d79d4b SDJ |
10303 | case OP_NAME: |
10304 | case OP_OBJC_NSSTRING: | |
10305 | ||
10306 | case UNOP_NEG: | |
10307 | case UNOP_LOGICAL_NOT: | |
10308 | case UNOP_COMPLEMENT: | |
10309 | case UNOP_ADDR: | |
10310 | case UNOP_HIGH: | |
aeaa2474 | 10311 | case UNOP_CAST: |
9eaf6705 TT |
10312 | |
10313 | case UNOP_CAST_TYPE: | |
10314 | case UNOP_REINTERPRET_CAST: | |
10315 | case UNOP_DYNAMIC_CAST: | |
4a64f543 MS |
10316 | /* Unary, binary and ternary operators: We have to check |
10317 | their operands. If they are constant, then so is the | |
10318 | result of that operation. For instance, if A and B are | |
10319 | determined to be constants, then so is "A + B". | |
10320 | ||
10321 | UNOP_IND is one exception to the rule above, because the | |
10322 | value of *ADDR is not necessarily a constant, even when | |
10323 | ADDR is. */ | |
65d79d4b SDJ |
10324 | break; |
10325 | ||
10326 | case OP_VAR_VALUE: | |
10327 | /* Check whether the associated symbol is a constant. | |
4a64f543 | 10328 | |
65d79d4b | 10329 | We use SYMBOL_CLASS rather than TYPE_CONST because it's |
4a64f543 MS |
10330 | possible that a buggy compiler could mark a variable as |
10331 | constant even when it is not, and TYPE_CONST would return | |
10332 | true in this case, while SYMBOL_CLASS wouldn't. | |
10333 | ||
10334 | We also have to check for function symbols because they | |
10335 | are always constant. */ | |
65d79d4b SDJ |
10336 | { |
10337 | struct symbol *s = exp->elts[i + 2].symbol; | |
10338 | ||
10339 | if (SYMBOL_CLASS (s) != LOC_BLOCK | |
10340 | && SYMBOL_CLASS (s) != LOC_CONST | |
10341 | && SYMBOL_CLASS (s) != LOC_CONST_BYTES) | |
10342 | return 0; | |
10343 | break; | |
10344 | } | |
10345 | ||
10346 | /* The default action is to return 0 because we are using | |
10347 | the optimistic approach here: If we don't know something, | |
10348 | then it is not a constant. */ | |
10349 | default: | |
10350 | return 0; | |
10351 | } | |
10352 | } | |
10353 | ||
10354 | return 1; | |
10355 | } | |
10356 | ||
3a5c3e22 PA |
10357 | /* Implement the "dtor" breakpoint_ops method for watchpoints. */ |
10358 | ||
10359 | static void | |
10360 | dtor_watchpoint (struct breakpoint *self) | |
10361 | { | |
10362 | struct watchpoint *w = (struct watchpoint *) self; | |
10363 | ||
10364 | xfree (w->cond_exp); | |
10365 | xfree (w->exp); | |
10366 | xfree (w->exp_string); | |
10367 | xfree (w->exp_string_reparse); | |
10368 | value_free (w->val); | |
10369 | ||
10370 | base_breakpoint_ops.dtor (self); | |
10371 | } | |
10372 | ||
348d480f PA |
10373 | /* Implement the "re_set" breakpoint_ops method for watchpoints. */ |
10374 | ||
10375 | static void | |
10376 | re_set_watchpoint (struct breakpoint *b) | |
10377 | { | |
3a5c3e22 PA |
10378 | struct watchpoint *w = (struct watchpoint *) b; |
10379 | ||
348d480f PA |
10380 | /* Watchpoint can be either on expression using entirely global |
10381 | variables, or it can be on local variables. | |
10382 | ||
10383 | Watchpoints of the first kind are never auto-deleted, and even | |
10384 | persist across program restarts. Since they can use variables | |
10385 | from shared libraries, we need to reparse expression as libraries | |
10386 | are loaded and unloaded. | |
10387 | ||
10388 | Watchpoints on local variables can also change meaning as result | |
10389 | of solib event. For example, if a watchpoint uses both a local | |
10390 | and a global variables in expression, it's a local watchpoint, | |
10391 | but unloading of a shared library will make the expression | |
10392 | invalid. This is not a very common use case, but we still | |
10393 | re-evaluate expression, to avoid surprises to the user. | |
10394 | ||
10395 | Note that for local watchpoints, we re-evaluate it only if | |
10396 | watchpoints frame id is still valid. If it's not, it means the | |
10397 | watchpoint is out of scope and will be deleted soon. In fact, | |
10398 | I'm not sure we'll ever be called in this case. | |
10399 | ||
10400 | If a local watchpoint's frame id is still valid, then | |
3a5c3e22 | 10401 | w->exp_valid_block is likewise valid, and we can safely use it. |
348d480f | 10402 | |
3a5c3e22 PA |
10403 | Don't do anything about disabled watchpoints, since they will be |
10404 | reevaluated again when enabled. */ | |
10405 | update_watchpoint (w, 1 /* reparse */); | |
348d480f PA |
10406 | } |
10407 | ||
77b06cd7 TJB |
10408 | /* Implement the "insert" breakpoint_ops method for hardware watchpoints. */ |
10409 | ||
10410 | static int | |
10411 | insert_watchpoint (struct bp_location *bl) | |
10412 | { | |
3a5c3e22 PA |
10413 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10414 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10415 | |
10416 | return target_insert_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10417 | w->cond_exp); |
77b06cd7 TJB |
10418 | } |
10419 | ||
10420 | /* Implement the "remove" breakpoint_ops method for hardware watchpoints. */ | |
10421 | ||
10422 | static int | |
10423 | remove_watchpoint (struct bp_location *bl) | |
10424 | { | |
3a5c3e22 PA |
10425 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10426 | int length = w->exact ? 1 : bl->length; | |
e09342b5 TJB |
10427 | |
10428 | return target_remove_watchpoint (bl->address, length, bl->watchpoint_type, | |
3a5c3e22 | 10429 | w->cond_exp); |
e09342b5 TJB |
10430 | } |
10431 | ||
e09342b5 | 10432 | static int |
348d480f | 10433 | breakpoint_hit_watchpoint (const struct bp_location *bl, |
09ac7c10 TT |
10434 | struct address_space *aspace, CORE_ADDR bp_addr, |
10435 | const struct target_waitstatus *ws) | |
e09342b5 | 10436 | { |
348d480f | 10437 | struct breakpoint *b = bl->owner; |
3a5c3e22 | 10438 | struct watchpoint *w = (struct watchpoint *) b; |
77b06cd7 | 10439 | |
348d480f PA |
10440 | /* Continuable hardware watchpoints are treated as non-existent if the |
10441 | reason we stopped wasn't a hardware watchpoint (we didn't stop on | |
10442 | some data address). Otherwise gdb won't stop on a break instruction | |
10443 | in the code (not from a breakpoint) when a hardware watchpoint has | |
10444 | been defined. Also skip watchpoints which we know did not trigger | |
10445 | (did not match the data address). */ | |
10446 | if (is_hardware_watchpoint (b) | |
3a5c3e22 | 10447 | && w->watchpoint_triggered == watch_triggered_no) |
348d480f | 10448 | return 0; |
9c06b0b4 | 10449 | |
348d480f | 10450 | return 1; |
9c06b0b4 TJB |
10451 | } |
10452 | ||
348d480f PA |
10453 | static void |
10454 | check_status_watchpoint (bpstat bs) | |
9c06b0b4 | 10455 | { |
348d480f | 10456 | gdb_assert (is_watchpoint (bs->breakpoint_at)); |
9c06b0b4 | 10457 | |
348d480f | 10458 | bpstat_check_watchpoint (bs); |
9c06b0b4 TJB |
10459 | } |
10460 | ||
10461 | /* Implement the "resources_needed" breakpoint_ops method for | |
348d480f | 10462 | hardware watchpoints. */ |
9c06b0b4 TJB |
10463 | |
10464 | static int | |
348d480f | 10465 | resources_needed_watchpoint (const struct bp_location *bl) |
9c06b0b4 | 10466 | { |
3a5c3e22 PA |
10467 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10468 | int length = w->exact? 1 : bl->length; | |
348d480f PA |
10469 | |
10470 | return target_region_ok_for_hw_watchpoint (bl->address, length); | |
9c06b0b4 TJB |
10471 | } |
10472 | ||
10473 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
348d480f | 10474 | hardware watchpoints. */ |
9c06b0b4 TJB |
10475 | |
10476 | static int | |
348d480f | 10477 | works_in_software_mode_watchpoint (const struct breakpoint *b) |
9c06b0b4 | 10478 | { |
efa80663 PA |
10479 | /* Read and access watchpoints only work with hardware support. */ |
10480 | return b->type == bp_watchpoint || b->type == bp_hardware_watchpoint; | |
9c06b0b4 TJB |
10481 | } |
10482 | ||
9c06b0b4 | 10483 | static enum print_stop_action |
348d480f | 10484 | print_it_watchpoint (bpstat bs) |
9c06b0b4 | 10485 | { |
348d480f PA |
10486 | struct cleanup *old_chain; |
10487 | struct breakpoint *b; | |
f99d8bf4 | 10488 | struct ui_file *stb; |
348d480f | 10489 | enum print_stop_action result; |
3a5c3e22 | 10490 | struct watchpoint *w; |
79a45e25 | 10491 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10492 | |
10493 | gdb_assert (bs->bp_location_at != NULL); | |
10494 | ||
348d480f | 10495 | b = bs->breakpoint_at; |
3a5c3e22 | 10496 | w = (struct watchpoint *) b; |
348d480f | 10497 | |
f99d8bf4 PA |
10498 | stb = mem_fileopen (); |
10499 | old_chain = make_cleanup_ui_file_delete (stb); | |
9c06b0b4 TJB |
10500 | |
10501 | switch (b->type) | |
10502 | { | |
348d480f | 10503 | case bp_watchpoint: |
9c06b0b4 TJB |
10504 | case bp_hardware_watchpoint: |
10505 | annotate_watchpoint (b->number); | |
10506 | if (ui_out_is_mi_like_p (uiout)) | |
10507 | ui_out_field_string | |
10508 | (uiout, "reason", | |
10509 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10510 | mention (b); |
10511 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10512 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10513 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10514 | ui_out_field_stream (uiout, "old", stb); |
10515 | ui_out_text (uiout, "\nNew value = "); | |
f99d8bf4 | 10516 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10517 | ui_out_field_stream (uiout, "new", stb); |
10518 | ui_out_text (uiout, "\n"); | |
10519 | /* More than one watchpoint may have been triggered. */ | |
10520 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10521 | break; |
10522 | ||
10523 | case bp_read_watchpoint: | |
10524 | if (ui_out_is_mi_like_p (uiout)) | |
10525 | ui_out_field_string | |
10526 | (uiout, "reason", | |
10527 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
348d480f PA |
10528 | mention (b); |
10529 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10530 | ui_out_text (uiout, "\nValue = "); | |
f99d8bf4 | 10531 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10532 | ui_out_field_stream (uiout, "value", stb); |
10533 | ui_out_text (uiout, "\n"); | |
10534 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10535 | break; |
10536 | ||
10537 | case bp_access_watchpoint: | |
348d480f PA |
10538 | if (bs->old_val != NULL) |
10539 | { | |
10540 | annotate_watchpoint (b->number); | |
10541 | if (ui_out_is_mi_like_p (uiout)) | |
10542 | ui_out_field_string | |
10543 | (uiout, "reason", | |
10544 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10545 | mention (b); | |
10546 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10547 | ui_out_text (uiout, "\nOld value = "); | |
f99d8bf4 | 10548 | watchpoint_value_print (bs->old_val, stb); |
348d480f PA |
10549 | ui_out_field_stream (uiout, "old", stb); |
10550 | ui_out_text (uiout, "\nNew value = "); | |
10551 | } | |
10552 | else | |
10553 | { | |
10554 | mention (b); | |
10555 | if (ui_out_is_mi_like_p (uiout)) | |
10556 | ui_out_field_string | |
10557 | (uiout, "reason", | |
10558 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10559 | make_cleanup_ui_out_tuple_begin_end (uiout, "value"); | |
10560 | ui_out_text (uiout, "\nValue = "); | |
10561 | } | |
f99d8bf4 | 10562 | watchpoint_value_print (w->val, stb); |
348d480f PA |
10563 | ui_out_field_stream (uiout, "new", stb); |
10564 | ui_out_text (uiout, "\n"); | |
10565 | result = PRINT_UNKNOWN; | |
9c06b0b4 TJB |
10566 | break; |
10567 | default: | |
348d480f | 10568 | result = PRINT_UNKNOWN; |
9c06b0b4 TJB |
10569 | } |
10570 | ||
348d480f PA |
10571 | do_cleanups (old_chain); |
10572 | return result; | |
10573 | } | |
10574 | ||
10575 | /* Implement the "print_mention" breakpoint_ops method for hardware | |
10576 | watchpoints. */ | |
10577 | ||
10578 | static void | |
10579 | print_mention_watchpoint (struct breakpoint *b) | |
10580 | { | |
10581 | struct cleanup *ui_out_chain; | |
3a5c3e22 | 10582 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10583 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10584 | |
10585 | switch (b->type) | |
10586 | { | |
10587 | case bp_watchpoint: | |
10588 | ui_out_text (uiout, "Watchpoint "); | |
10589 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10590 | break; | |
10591 | case bp_hardware_watchpoint: | |
10592 | ui_out_text (uiout, "Hardware watchpoint "); | |
10593 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10594 | break; | |
10595 | case bp_read_watchpoint: | |
10596 | ui_out_text (uiout, "Hardware read watchpoint "); | |
10597 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10598 | break; | |
10599 | case bp_access_watchpoint: | |
10600 | ui_out_text (uiout, "Hardware access (read/write) watchpoint "); | |
10601 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10602 | break; | |
10603 | default: | |
10604 | internal_error (__FILE__, __LINE__, | |
10605 | _("Invalid hardware watchpoint type.")); | |
10606 | } | |
10607 | ||
10608 | ui_out_field_int (uiout, "number", b->number); | |
10609 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10610 | ui_out_field_string (uiout, "exp", w->exp_string); |
348d480f PA |
10611 | do_cleanups (ui_out_chain); |
10612 | } | |
10613 | ||
10614 | /* Implement the "print_recreate" breakpoint_ops method for | |
10615 | watchpoints. */ | |
10616 | ||
10617 | static void | |
10618 | print_recreate_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10619 | { | |
3a5c3e22 PA |
10620 | struct watchpoint *w = (struct watchpoint *) b; |
10621 | ||
348d480f PA |
10622 | switch (b->type) |
10623 | { | |
10624 | case bp_watchpoint: | |
10625 | case bp_hardware_watchpoint: | |
10626 | fprintf_unfiltered (fp, "watch"); | |
10627 | break; | |
10628 | case bp_read_watchpoint: | |
10629 | fprintf_unfiltered (fp, "rwatch"); | |
10630 | break; | |
10631 | case bp_access_watchpoint: | |
10632 | fprintf_unfiltered (fp, "awatch"); | |
10633 | break; | |
10634 | default: | |
10635 | internal_error (__FILE__, __LINE__, | |
10636 | _("Invalid watchpoint type.")); | |
10637 | } | |
10638 | ||
3a5c3e22 | 10639 | fprintf_unfiltered (fp, " %s", w->exp_string); |
d9b3f62e | 10640 | print_recreate_thread (b, fp); |
348d480f PA |
10641 | } |
10642 | ||
427cd150 TT |
10643 | /* Implement the "explains_signal" breakpoint_ops method for |
10644 | watchpoints. */ | |
10645 | ||
10646 | static enum bpstat_signal_value | |
10647 | explains_signal_watchpoint (struct breakpoint *b, enum gdb_signal sig) | |
10648 | { | |
10649 | /* A software watchpoint cannot cause a signal other than | |
10650 | GDB_SIGNAL_TRAP. */ | |
10651 | if (b->type == bp_watchpoint && sig != GDB_SIGNAL_TRAP) | |
10652 | return BPSTAT_SIGNAL_NO; | |
10653 | ||
10654 | return BPSTAT_SIGNAL_HIDE; | |
10655 | } | |
10656 | ||
348d480f PA |
10657 | /* The breakpoint_ops structure to be used in hardware watchpoints. */ |
10658 | ||
2060206e | 10659 | static struct breakpoint_ops watchpoint_breakpoint_ops; |
348d480f PA |
10660 | |
10661 | /* Implement the "insert" breakpoint_ops method for | |
10662 | masked hardware watchpoints. */ | |
10663 | ||
10664 | static int | |
10665 | insert_masked_watchpoint (struct bp_location *bl) | |
10666 | { | |
3a5c3e22 PA |
10667 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10668 | ||
10669 | return target_insert_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10670 | bl->watchpoint_type); |
10671 | } | |
10672 | ||
10673 | /* Implement the "remove" breakpoint_ops method for | |
10674 | masked hardware watchpoints. */ | |
10675 | ||
10676 | static int | |
10677 | remove_masked_watchpoint (struct bp_location *bl) | |
10678 | { | |
3a5c3e22 PA |
10679 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10680 | ||
10681 | return target_remove_mask_watchpoint (bl->address, w->hw_wp_mask, | |
348d480f PA |
10682 | bl->watchpoint_type); |
10683 | } | |
10684 | ||
10685 | /* Implement the "resources_needed" breakpoint_ops method for | |
10686 | masked hardware watchpoints. */ | |
10687 | ||
10688 | static int | |
10689 | resources_needed_masked_watchpoint (const struct bp_location *bl) | |
10690 | { | |
3a5c3e22 PA |
10691 | struct watchpoint *w = (struct watchpoint *) bl->owner; |
10692 | ||
10693 | return target_masked_watch_num_registers (bl->address, w->hw_wp_mask); | |
348d480f PA |
10694 | } |
10695 | ||
10696 | /* Implement the "works_in_software_mode" breakpoint_ops method for | |
10697 | masked hardware watchpoints. */ | |
10698 | ||
10699 | static int | |
10700 | works_in_software_mode_masked_watchpoint (const struct breakpoint *b) | |
10701 | { | |
10702 | return 0; | |
10703 | } | |
10704 | ||
10705 | /* Implement the "print_it" breakpoint_ops method for | |
10706 | masked hardware watchpoints. */ | |
10707 | ||
10708 | static enum print_stop_action | |
10709 | print_it_masked_watchpoint (bpstat bs) | |
10710 | { | |
10711 | struct breakpoint *b = bs->breakpoint_at; | |
79a45e25 | 10712 | struct ui_out *uiout = current_uiout; |
348d480f PA |
10713 | |
10714 | /* Masked watchpoints have only one location. */ | |
10715 | gdb_assert (b->loc && b->loc->next == NULL); | |
10716 | ||
10717 | switch (b->type) | |
10718 | { | |
10719 | case bp_hardware_watchpoint: | |
10720 | annotate_watchpoint (b->number); | |
10721 | if (ui_out_is_mi_like_p (uiout)) | |
10722 | ui_out_field_string | |
10723 | (uiout, "reason", | |
10724 | async_reason_lookup (EXEC_ASYNC_WATCHPOINT_TRIGGER)); | |
10725 | break; | |
10726 | ||
10727 | case bp_read_watchpoint: | |
10728 | if (ui_out_is_mi_like_p (uiout)) | |
10729 | ui_out_field_string | |
10730 | (uiout, "reason", | |
10731 | async_reason_lookup (EXEC_ASYNC_READ_WATCHPOINT_TRIGGER)); | |
10732 | break; | |
10733 | ||
10734 | case bp_access_watchpoint: | |
10735 | if (ui_out_is_mi_like_p (uiout)) | |
10736 | ui_out_field_string | |
10737 | (uiout, "reason", | |
10738 | async_reason_lookup (EXEC_ASYNC_ACCESS_WATCHPOINT_TRIGGER)); | |
10739 | break; | |
10740 | default: | |
10741 | internal_error (__FILE__, __LINE__, | |
10742 | _("Invalid hardware watchpoint type.")); | |
10743 | } | |
10744 | ||
10745 | mention (b); | |
9c06b0b4 TJB |
10746 | ui_out_text (uiout, _("\n\ |
10747 | Check the underlying instruction at PC for the memory\n\ | |
10748 | address and value which triggered this watchpoint.\n")); | |
10749 | ui_out_text (uiout, "\n"); | |
10750 | ||
10751 | /* More than one watchpoint may have been triggered. */ | |
10752 | return PRINT_UNKNOWN; | |
10753 | } | |
10754 | ||
10755 | /* Implement the "print_one_detail" breakpoint_ops method for | |
10756 | masked hardware watchpoints. */ | |
10757 | ||
10758 | static void | |
10759 | print_one_detail_masked_watchpoint (const struct breakpoint *b, | |
10760 | struct ui_out *uiout) | |
10761 | { | |
3a5c3e22 PA |
10762 | struct watchpoint *w = (struct watchpoint *) b; |
10763 | ||
9c06b0b4 TJB |
10764 | /* Masked watchpoints have only one location. */ |
10765 | gdb_assert (b->loc && b->loc->next == NULL); | |
10766 | ||
10767 | ui_out_text (uiout, "\tmask "); | |
3a5c3e22 | 10768 | ui_out_field_core_addr (uiout, "mask", b->loc->gdbarch, w->hw_wp_mask); |
9c06b0b4 TJB |
10769 | ui_out_text (uiout, "\n"); |
10770 | } | |
10771 | ||
10772 | /* Implement the "print_mention" breakpoint_ops method for | |
10773 | masked hardware watchpoints. */ | |
10774 | ||
10775 | static void | |
10776 | print_mention_masked_watchpoint (struct breakpoint *b) | |
10777 | { | |
3a5c3e22 | 10778 | struct watchpoint *w = (struct watchpoint *) b; |
79a45e25 | 10779 | struct ui_out *uiout = current_uiout; |
9c06b0b4 TJB |
10780 | struct cleanup *ui_out_chain; |
10781 | ||
10782 | switch (b->type) | |
10783 | { | |
10784 | case bp_hardware_watchpoint: | |
10785 | ui_out_text (uiout, "Masked hardware watchpoint "); | |
10786 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "wpt"); | |
10787 | break; | |
10788 | case bp_read_watchpoint: | |
10789 | ui_out_text (uiout, "Masked hardware read watchpoint "); | |
10790 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-rwpt"); | |
10791 | break; | |
10792 | case bp_access_watchpoint: | |
10793 | ui_out_text (uiout, "Masked hardware access (read/write) watchpoint "); | |
10794 | ui_out_chain = make_cleanup_ui_out_tuple_begin_end (uiout, "hw-awpt"); | |
10795 | break; | |
10796 | default: | |
10797 | internal_error (__FILE__, __LINE__, | |
10798 | _("Invalid hardware watchpoint type.")); | |
10799 | } | |
10800 | ||
10801 | ui_out_field_int (uiout, "number", b->number); | |
10802 | ui_out_text (uiout, ": "); | |
3a5c3e22 | 10803 | ui_out_field_string (uiout, "exp", w->exp_string); |
9c06b0b4 TJB |
10804 | do_cleanups (ui_out_chain); |
10805 | } | |
10806 | ||
10807 | /* Implement the "print_recreate" breakpoint_ops method for | |
10808 | masked hardware watchpoints. */ | |
10809 | ||
10810 | static void | |
10811 | print_recreate_masked_watchpoint (struct breakpoint *b, struct ui_file *fp) | |
10812 | { | |
3a5c3e22 | 10813 | struct watchpoint *w = (struct watchpoint *) b; |
9c06b0b4 TJB |
10814 | char tmp[40]; |
10815 | ||
10816 | switch (b->type) | |
10817 | { | |
10818 | case bp_hardware_watchpoint: | |
10819 | fprintf_unfiltered (fp, "watch"); | |
10820 | break; | |
10821 | case bp_read_watchpoint: | |
10822 | fprintf_unfiltered (fp, "rwatch"); | |
10823 | break; | |
10824 | case bp_access_watchpoint: | |
10825 | fprintf_unfiltered (fp, "awatch"); | |
10826 | break; | |
10827 | default: | |
10828 | internal_error (__FILE__, __LINE__, | |
10829 | _("Invalid hardware watchpoint type.")); | |
10830 | } | |
10831 | ||
3a5c3e22 PA |
10832 | sprintf_vma (tmp, w->hw_wp_mask); |
10833 | fprintf_unfiltered (fp, " %s mask 0x%s", w->exp_string, tmp); | |
d9b3f62e | 10834 | print_recreate_thread (b, fp); |
9c06b0b4 TJB |
10835 | } |
10836 | ||
10837 | /* The breakpoint_ops structure to be used in masked hardware watchpoints. */ | |
10838 | ||
2060206e | 10839 | static struct breakpoint_ops masked_watchpoint_breakpoint_ops; |
9c06b0b4 TJB |
10840 | |
10841 | /* Tell whether the given watchpoint is a masked hardware watchpoint. */ | |
10842 | ||
10843 | static int | |
10844 | is_masked_watchpoint (const struct breakpoint *b) | |
10845 | { | |
10846 | return b->ops == &masked_watchpoint_breakpoint_ops; | |
10847 | } | |
10848 | ||
53a5351d JM |
10849 | /* accessflag: hw_write: watch write, |
10850 | hw_read: watch read, | |
10851 | hw_access: watch access (read or write) */ | |
c906108c | 10852 | static void |
bbc13ae3 | 10853 | watch_command_1 (const char *arg, int accessflag, int from_tty, |
84f4c1fe | 10854 | int just_location, int internal) |
c906108c | 10855 | { |
a9634178 | 10856 | volatile struct gdb_exception e; |
d983da9c | 10857 | struct breakpoint *b, *scope_breakpoint = NULL; |
c906108c | 10858 | struct expression *exp; |
270140bd | 10859 | const struct block *exp_valid_block = NULL, *cond_exp_valid_block = NULL; |
a1442452 | 10860 | struct value *val, *mark, *result; |
c906108c | 10861 | struct frame_info *frame; |
bbc13ae3 KS |
10862 | const char *exp_start = NULL; |
10863 | const char *exp_end = NULL; | |
10864 | const char *tok, *end_tok; | |
9c06b0b4 | 10865 | int toklen = -1; |
bbc13ae3 KS |
10866 | const char *cond_start = NULL; |
10867 | const char *cond_end = NULL; | |
c906108c | 10868 | enum bptype bp_type; |
37e4754d | 10869 | int thread = -1; |
0cf6dd15 | 10870 | int pc = 0; |
9c06b0b4 TJB |
10871 | /* Flag to indicate whether we are going to use masks for |
10872 | the hardware watchpoint. */ | |
10873 | int use_mask = 0; | |
10874 | CORE_ADDR mask = 0; | |
3a5c3e22 | 10875 | struct watchpoint *w; |
bbc13ae3 KS |
10876 | char *expression; |
10877 | struct cleanup *back_to; | |
c906108c | 10878 | |
37e4754d LM |
10879 | /* Make sure that we actually have parameters to parse. */ |
10880 | if (arg != NULL && arg[0] != '\0') | |
10881 | { | |
bbc13ae3 KS |
10882 | const char *value_start; |
10883 | ||
10884 | exp_end = arg + strlen (arg); | |
37e4754d | 10885 | |
9c06b0b4 TJB |
10886 | /* Look for "parameter value" pairs at the end |
10887 | of the arguments string. */ | |
bbc13ae3 | 10888 | for (tok = exp_end - 1; tok > arg; tok--) |
9c06b0b4 TJB |
10889 | { |
10890 | /* Skip whitespace at the end of the argument list. */ | |
10891 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10892 | tok--; | |
10893 | ||
10894 | /* Find the beginning of the last token. | |
10895 | This is the value of the parameter. */ | |
10896 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10897 | tok--; | |
10898 | value_start = tok + 1; | |
10899 | ||
10900 | /* Skip whitespace. */ | |
10901 | while (tok > arg && (*tok == ' ' || *tok == '\t')) | |
10902 | tok--; | |
10903 | ||
10904 | end_tok = tok; | |
10905 | ||
10906 | /* Find the beginning of the second to last token. | |
10907 | This is the parameter itself. */ | |
10908 | while (tok > arg && (*tok != ' ' && *tok != '\t')) | |
10909 | tok--; | |
10910 | tok++; | |
10911 | toklen = end_tok - tok + 1; | |
10912 | ||
10913 | if (toklen == 6 && !strncmp (tok, "thread", 6)) | |
10914 | { | |
10915 | /* At this point we've found a "thread" token, which means | |
10916 | the user is trying to set a watchpoint that triggers | |
10917 | only in a specific thread. */ | |
10918 | char *endp; | |
37e4754d | 10919 | |
9c06b0b4 TJB |
10920 | if (thread != -1) |
10921 | error(_("You can specify only one thread.")); | |
37e4754d | 10922 | |
9c06b0b4 TJB |
10923 | /* Extract the thread ID from the next token. */ |
10924 | thread = strtol (value_start, &endp, 0); | |
37e4754d | 10925 | |
9c06b0b4 TJB |
10926 | /* Check if the user provided a valid numeric value for the |
10927 | thread ID. */ | |
10928 | if (*endp != ' ' && *endp != '\t' && *endp != '\0') | |
10929 | error (_("Invalid thread ID specification %s."), value_start); | |
10930 | ||
10931 | /* Check if the thread actually exists. */ | |
10932 | if (!valid_thread_id (thread)) | |
af4908ba | 10933 | invalid_thread_id_error (thread); |
9c06b0b4 TJB |
10934 | } |
10935 | else if (toklen == 4 && !strncmp (tok, "mask", 4)) | |
10936 | { | |
10937 | /* We've found a "mask" token, which means the user wants to | |
10938 | create a hardware watchpoint that is going to have the mask | |
10939 | facility. */ | |
10940 | struct value *mask_value, *mark; | |
37e4754d | 10941 | |
9c06b0b4 TJB |
10942 | if (use_mask) |
10943 | error(_("You can specify only one mask.")); | |
37e4754d | 10944 | |
9c06b0b4 | 10945 | use_mask = just_location = 1; |
37e4754d | 10946 | |
9c06b0b4 TJB |
10947 | mark = value_mark (); |
10948 | mask_value = parse_to_comma_and_eval (&value_start); | |
10949 | mask = value_as_address (mask_value); | |
10950 | value_free_to_mark (mark); | |
10951 | } | |
10952 | else | |
10953 | /* We didn't recognize what we found. We should stop here. */ | |
10954 | break; | |
37e4754d | 10955 | |
9c06b0b4 TJB |
10956 | /* Truncate the string and get rid of the "parameter value" pair before |
10957 | the arguments string is parsed by the parse_exp_1 function. */ | |
bbc13ae3 | 10958 | exp_end = tok; |
9c06b0b4 | 10959 | } |
37e4754d | 10960 | } |
bbc13ae3 KS |
10961 | else |
10962 | exp_end = arg; | |
37e4754d | 10963 | |
bbc13ae3 KS |
10964 | /* Parse the rest of the arguments. From here on out, everything |
10965 | is in terms of a newly allocated string instead of the original | |
10966 | ARG. */ | |
c906108c | 10967 | innermost_block = NULL; |
bbc13ae3 KS |
10968 | expression = savestring (arg, exp_end - arg); |
10969 | back_to = make_cleanup (xfree, expression); | |
10970 | exp_start = arg = expression; | |
1bb9788d | 10971 | exp = parse_exp_1 (&arg, 0, 0, 0); |
c906108c | 10972 | exp_end = arg; |
fa8a61dc TT |
10973 | /* Remove trailing whitespace from the expression before saving it. |
10974 | This makes the eventual display of the expression string a bit | |
10975 | prettier. */ | |
10976 | while (exp_end > exp_start && (exp_end[-1] == ' ' || exp_end[-1] == '\t')) | |
10977 | --exp_end; | |
10978 | ||
65d79d4b SDJ |
10979 | /* Checking if the expression is not constant. */ |
10980 | if (watchpoint_exp_is_const (exp)) | |
10981 | { | |
10982 | int len; | |
10983 | ||
10984 | len = exp_end - exp_start; | |
10985 | while (len > 0 && isspace (exp_start[len - 1])) | |
10986 | len--; | |
10987 | error (_("Cannot watch constant value `%.*s'."), len, exp_start); | |
10988 | } | |
10989 | ||
c906108c SS |
10990 | exp_valid_block = innermost_block; |
10991 | mark = value_mark (); | |
a1442452 | 10992 | fetch_subexp_value (exp, &pc, &val, &result, NULL); |
06a64a0b TT |
10993 | |
10994 | if (just_location) | |
10995 | { | |
9c06b0b4 TJB |
10996 | int ret; |
10997 | ||
06a64a0b | 10998 | exp_valid_block = NULL; |
a1442452 | 10999 | val = value_addr (result); |
06a64a0b TT |
11000 | release_value (val); |
11001 | value_free_to_mark (mark); | |
9c06b0b4 TJB |
11002 | |
11003 | if (use_mask) | |
11004 | { | |
11005 | ret = target_masked_watch_num_registers (value_as_address (val), | |
11006 | mask); | |
11007 | if (ret == -1) | |
11008 | error (_("This target does not support masked watchpoints.")); | |
11009 | else if (ret == -2) | |
11010 | error (_("Invalid mask or memory region.")); | |
11011 | } | |
06a64a0b TT |
11012 | } |
11013 | else if (val != NULL) | |
fa4727a6 | 11014 | release_value (val); |
c906108c | 11015 | |
bbc13ae3 KS |
11016 | tok = skip_spaces_const (arg); |
11017 | end_tok = skip_to_space_const (tok); | |
c906108c SS |
11018 | |
11019 | toklen = end_tok - tok; | |
11020 | if (toklen >= 1 && strncmp (tok, "if", toklen) == 0) | |
11021 | { | |
2d134ed3 PA |
11022 | struct expression *cond; |
11023 | ||
60e1c644 | 11024 | innermost_block = NULL; |
c906108c | 11025 | tok = cond_start = end_tok + 1; |
1bb9788d | 11026 | cond = parse_exp_1 (&tok, 0, 0, 0); |
60e1c644 PA |
11027 | |
11028 | /* The watchpoint expression may not be local, but the condition | |
11029 | may still be. E.g.: `watch global if local > 0'. */ | |
11030 | cond_exp_valid_block = innermost_block; | |
11031 | ||
2d134ed3 | 11032 | xfree (cond); |
c906108c SS |
11033 | cond_end = tok; |
11034 | } | |
11035 | if (*tok) | |
8a3fe4f8 | 11036 | error (_("Junk at end of command.")); |
c906108c | 11037 | |
53a5351d | 11038 | if (accessflag == hw_read) |
c5aa993b | 11039 | bp_type = bp_read_watchpoint; |
53a5351d | 11040 | else if (accessflag == hw_access) |
c5aa993b JM |
11041 | bp_type = bp_access_watchpoint; |
11042 | else | |
11043 | bp_type = bp_hardware_watchpoint; | |
c906108c | 11044 | |
d983da9c | 11045 | frame = block_innermost_frame (exp_valid_block); |
d983da9c DJ |
11046 | |
11047 | /* If the expression is "local", then set up a "watchpoint scope" | |
11048 | breakpoint at the point where we've left the scope of the watchpoint | |
11049 | expression. Create the scope breakpoint before the watchpoint, so | |
11050 | that we will encounter it first in bpstat_stop_status. */ | |
60e1c644 | 11051 | if (exp_valid_block && frame) |
d983da9c | 11052 | { |
edb3359d DJ |
11053 | if (frame_id_p (frame_unwind_caller_id (frame))) |
11054 | { | |
11055 | scope_breakpoint | |
a6d9a66e UW |
11056 | = create_internal_breakpoint (frame_unwind_caller_arch (frame), |
11057 | frame_unwind_caller_pc (frame), | |
06edf0c0 PA |
11058 | bp_watchpoint_scope, |
11059 | &momentary_breakpoint_ops); | |
d983da9c | 11060 | |
edb3359d | 11061 | scope_breakpoint->enable_state = bp_enabled; |
d983da9c | 11062 | |
edb3359d DJ |
11063 | /* Automatically delete the breakpoint when it hits. */ |
11064 | scope_breakpoint->disposition = disp_del; | |
d983da9c | 11065 | |
edb3359d DJ |
11066 | /* Only break in the proper frame (help with recursion). */ |
11067 | scope_breakpoint->frame_id = frame_unwind_caller_id (frame); | |
d983da9c | 11068 | |
edb3359d | 11069 | /* Set the address at which we will stop. */ |
a6d9a66e UW |
11070 | scope_breakpoint->loc->gdbarch |
11071 | = frame_unwind_caller_arch (frame); | |
edb3359d DJ |
11072 | scope_breakpoint->loc->requested_address |
11073 | = frame_unwind_caller_pc (frame); | |
11074 | scope_breakpoint->loc->address | |
a6d9a66e UW |
11075 | = adjust_breakpoint_address (scope_breakpoint->loc->gdbarch, |
11076 | scope_breakpoint->loc->requested_address, | |
edb3359d DJ |
11077 | scope_breakpoint->type); |
11078 | } | |
d983da9c DJ |
11079 | } |
11080 | ||
c906108c | 11081 | /* Now set up the breakpoint. */ |
3a5c3e22 PA |
11082 | |
11083 | w = XCNEW (struct watchpoint); | |
11084 | b = &w->base; | |
348d480f | 11085 | if (use_mask) |
3a5c3e22 PA |
11086 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11087 | &masked_watchpoint_breakpoint_ops); | |
348d480f | 11088 | else |
3a5c3e22 PA |
11089 | init_raw_breakpoint_without_location (b, NULL, bp_type, |
11090 | &watchpoint_breakpoint_ops); | |
37e4754d | 11091 | b->thread = thread; |
b5de0fa7 | 11092 | b->disposition = disp_donttouch; |
348d480f | 11093 | b->pspace = current_program_space; |
3a5c3e22 PA |
11094 | w->exp = exp; |
11095 | w->exp_valid_block = exp_valid_block; | |
11096 | w->cond_exp_valid_block = cond_exp_valid_block; | |
06a64a0b TT |
11097 | if (just_location) |
11098 | { | |
11099 | struct type *t = value_type (val); | |
11100 | CORE_ADDR addr = value_as_address (val); | |
11101 | char *name; | |
11102 | ||
11103 | t = check_typedef (TYPE_TARGET_TYPE (check_typedef (t))); | |
11104 | name = type_to_string (t); | |
11105 | ||
3a5c3e22 | 11106 | w->exp_string_reparse = xstrprintf ("* (%s *) %s", name, |
d63d0675 | 11107 | core_addr_to_string (addr)); |
06a64a0b TT |
11108 | xfree (name); |
11109 | ||
3a5c3e22 | 11110 | w->exp_string = xstrprintf ("-location %.*s", |
d63d0675 JK |
11111 | (int) (exp_end - exp_start), exp_start); |
11112 | ||
06a64a0b TT |
11113 | /* The above expression is in C. */ |
11114 | b->language = language_c; | |
11115 | } | |
11116 | else | |
3a5c3e22 | 11117 | w->exp_string = savestring (exp_start, exp_end - exp_start); |
9c06b0b4 TJB |
11118 | |
11119 | if (use_mask) | |
11120 | { | |
3a5c3e22 | 11121 | w->hw_wp_mask = mask; |
9c06b0b4 TJB |
11122 | } |
11123 | else | |
11124 | { | |
3a5c3e22 PA |
11125 | w->val = val; |
11126 | w->val_valid = 1; | |
9c06b0b4 | 11127 | } |
77b06cd7 | 11128 | |
c906108c SS |
11129 | if (cond_start) |
11130 | b->cond_string = savestring (cond_start, cond_end - cond_start); | |
11131 | else | |
11132 | b->cond_string = 0; | |
c5aa993b | 11133 | |
c906108c | 11134 | if (frame) |
f6bc2008 | 11135 | { |
3a5c3e22 PA |
11136 | w->watchpoint_frame = get_frame_id (frame); |
11137 | w->watchpoint_thread = inferior_ptid; | |
f6bc2008 | 11138 | } |
c906108c | 11139 | else |
f6bc2008 | 11140 | { |
3a5c3e22 PA |
11141 | w->watchpoint_frame = null_frame_id; |
11142 | w->watchpoint_thread = null_ptid; | |
f6bc2008 | 11143 | } |
c906108c | 11144 | |
d983da9c | 11145 | if (scope_breakpoint != NULL) |
c906108c | 11146 | { |
d983da9c DJ |
11147 | /* The scope breakpoint is related to the watchpoint. We will |
11148 | need to act on them together. */ | |
11149 | b->related_breakpoint = scope_breakpoint; | |
11150 | scope_breakpoint->related_breakpoint = b; | |
c906108c | 11151 | } |
d983da9c | 11152 | |
06a64a0b TT |
11153 | if (!just_location) |
11154 | value_free_to_mark (mark); | |
2d134ed3 | 11155 | |
a9634178 TJB |
11156 | TRY_CATCH (e, RETURN_MASK_ALL) |
11157 | { | |
11158 | /* Finally update the new watchpoint. This creates the locations | |
11159 | that should be inserted. */ | |
3a5c3e22 | 11160 | update_watchpoint (w, 1); |
a9634178 TJB |
11161 | } |
11162 | if (e.reason < 0) | |
11163 | { | |
11164 | delete_breakpoint (b); | |
11165 | throw_exception (e); | |
11166 | } | |
11167 | ||
3ea46bff | 11168 | install_breakpoint (internal, b, 1); |
bbc13ae3 | 11169 | do_cleanups (back_to); |
c906108c SS |
11170 | } |
11171 | ||
e09342b5 | 11172 | /* Return count of debug registers needed to watch the given expression. |
e09342b5 | 11173 | If the watchpoint cannot be handled in hardware return zero. */ |
c906108c | 11174 | |
c906108c | 11175 | static int |
a9634178 | 11176 | can_use_hardware_watchpoint (struct value *v) |
c906108c SS |
11177 | { |
11178 | int found_memory_cnt = 0; | |
2e70b7b9 | 11179 | struct value *head = v; |
c906108c SS |
11180 | |
11181 | /* Did the user specifically forbid us to use hardware watchpoints? */ | |
c5aa993b | 11182 | if (!can_use_hw_watchpoints) |
c906108c | 11183 | return 0; |
c5aa993b | 11184 | |
5c44784c JM |
11185 | /* Make sure that the value of the expression depends only upon |
11186 | memory contents, and values computed from them within GDB. If we | |
11187 | find any register references or function calls, we can't use a | |
11188 | hardware watchpoint. | |
11189 | ||
11190 | The idea here is that evaluating an expression generates a series | |
11191 | of values, one holding the value of every subexpression. (The | |
11192 | expression a*b+c has five subexpressions: a, b, a*b, c, and | |
11193 | a*b+c.) GDB's values hold almost enough information to establish | |
11194 | the criteria given above --- they identify memory lvalues, | |
11195 | register lvalues, computed values, etcetera. So we can evaluate | |
11196 | the expression, and then scan the chain of values that leaves | |
11197 | behind to decide whether we can detect any possible change to the | |
11198 | expression's final value using only hardware watchpoints. | |
11199 | ||
11200 | However, I don't think that the values returned by inferior | |
11201 | function calls are special in any way. So this function may not | |
11202 | notice that an expression involving an inferior function call | |
11203 | can't be watched with hardware watchpoints. FIXME. */ | |
17cf0ecd | 11204 | for (; v; v = value_next (v)) |
c906108c | 11205 | { |
5c44784c | 11206 | if (VALUE_LVAL (v) == lval_memory) |
c906108c | 11207 | { |
8464be76 DJ |
11208 | if (v != head && value_lazy (v)) |
11209 | /* A lazy memory lvalue in the chain is one that GDB never | |
11210 | needed to fetch; we either just used its address (e.g., | |
11211 | `a' in `a.b') or we never needed it at all (e.g., `a' | |
11212 | in `a,b'). This doesn't apply to HEAD; if that is | |
11213 | lazy then it was not readable, but watch it anyway. */ | |
5c44784c | 11214 | ; |
53a5351d | 11215 | else |
5c44784c JM |
11216 | { |
11217 | /* Ahh, memory we actually used! Check if we can cover | |
11218 | it with hardware watchpoints. */ | |
df407dfe | 11219 | struct type *vtype = check_typedef (value_type (v)); |
2e70b7b9 MS |
11220 | |
11221 | /* We only watch structs and arrays if user asked for it | |
11222 | explicitly, never if they just happen to appear in a | |
11223 | middle of some value chain. */ | |
11224 | if (v == head | |
11225 | || (TYPE_CODE (vtype) != TYPE_CODE_STRUCT | |
11226 | && TYPE_CODE (vtype) != TYPE_CODE_ARRAY)) | |
11227 | { | |
42ae5230 | 11228 | CORE_ADDR vaddr = value_address (v); |
e09342b5 TJB |
11229 | int len; |
11230 | int num_regs; | |
11231 | ||
a9634178 | 11232 | len = (target_exact_watchpoints |
e09342b5 TJB |
11233 | && is_scalar_type_recursive (vtype))? |
11234 | 1 : TYPE_LENGTH (value_type (v)); | |
2e70b7b9 | 11235 | |
e09342b5 TJB |
11236 | num_regs = target_region_ok_for_hw_watchpoint (vaddr, len); |
11237 | if (!num_regs) | |
2e70b7b9 MS |
11238 | return 0; |
11239 | else | |
e09342b5 | 11240 | found_memory_cnt += num_regs; |
2e70b7b9 | 11241 | } |
5c44784c | 11242 | } |
c5aa993b | 11243 | } |
5086187c AC |
11244 | else if (VALUE_LVAL (v) != not_lval |
11245 | && deprecated_value_modifiable (v) == 0) | |
38b6c3b3 | 11246 | return 0; /* These are values from the history (e.g., $1). */ |
5086187c | 11247 | else if (VALUE_LVAL (v) == lval_register) |
38b6c3b3 | 11248 | return 0; /* Cannot watch a register with a HW watchpoint. */ |
c906108c SS |
11249 | } |
11250 | ||
11251 | /* The expression itself looks suitable for using a hardware | |
11252 | watchpoint, but give the target machine a chance to reject it. */ | |
11253 | return found_memory_cnt; | |
11254 | } | |
11255 | ||
8b93c638 | 11256 | void |
84f4c1fe | 11257 | watch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11258 | { |
84f4c1fe | 11259 | watch_command_1 (arg, hw_write, from_tty, 0, internal); |
06a64a0b TT |
11260 | } |
11261 | ||
06a64a0b TT |
11262 | /* A helper function that looks for the "-location" argument and then |
11263 | calls watch_command_1. */ | |
11264 | ||
11265 | static void | |
11266 | watch_maybe_just_location (char *arg, int accessflag, int from_tty) | |
11267 | { | |
11268 | int just_location = 0; | |
11269 | ||
11270 | if (arg | |
11271 | && (check_for_argument (&arg, "-location", sizeof ("-location") - 1) | |
11272 | || check_for_argument (&arg, "-l", sizeof ("-l") - 1))) | |
11273 | { | |
e9cafbcc | 11274 | arg = skip_spaces (arg); |
06a64a0b TT |
11275 | just_location = 1; |
11276 | } | |
11277 | ||
84f4c1fe | 11278 | watch_command_1 (arg, accessflag, from_tty, just_location, 0); |
8b93c638 | 11279 | } |
8926118c | 11280 | |
c5aa993b | 11281 | static void |
fba45db2 | 11282 | watch_command (char *arg, int from_tty) |
c906108c | 11283 | { |
06a64a0b | 11284 | watch_maybe_just_location (arg, hw_write, from_tty); |
c906108c SS |
11285 | } |
11286 | ||
8b93c638 | 11287 | void |
84f4c1fe | 11288 | rwatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11289 | { |
84f4c1fe | 11290 | watch_command_1 (arg, hw_read, from_tty, 0, internal); |
8b93c638 | 11291 | } |
8926118c | 11292 | |
c5aa993b | 11293 | static void |
fba45db2 | 11294 | rwatch_command (char *arg, int from_tty) |
c906108c | 11295 | { |
06a64a0b | 11296 | watch_maybe_just_location (arg, hw_read, from_tty); |
c906108c SS |
11297 | } |
11298 | ||
8b93c638 | 11299 | void |
84f4c1fe | 11300 | awatch_command_wrapper (char *arg, int from_tty, int internal) |
8b93c638 | 11301 | { |
84f4c1fe | 11302 | watch_command_1 (arg, hw_access, from_tty, 0, internal); |
8b93c638 | 11303 | } |
8926118c | 11304 | |
c5aa993b | 11305 | static void |
fba45db2 | 11306 | awatch_command (char *arg, int from_tty) |
c906108c | 11307 | { |
06a64a0b | 11308 | watch_maybe_just_location (arg, hw_access, from_tty); |
c906108c | 11309 | } |
c906108c | 11310 | \f |
c5aa993b | 11311 | |
43ff13b4 | 11312 | /* Helper routines for the until_command routine in infcmd.c. Here |
c906108c SS |
11313 | because it uses the mechanisms of breakpoints. */ |
11314 | ||
bfec99b2 PA |
11315 | struct until_break_command_continuation_args |
11316 | { | |
11317 | struct breakpoint *breakpoint; | |
11318 | struct breakpoint *breakpoint2; | |
186c406b | 11319 | int thread_num; |
bfec99b2 PA |
11320 | }; |
11321 | ||
43ff13b4 | 11322 | /* This function is called by fetch_inferior_event via the |
4a64f543 | 11323 | cmd_continuation pointer, to complete the until command. It takes |
43ff13b4 | 11324 | care of cleaning up the temporary breakpoints set up by the until |
4a64f543 | 11325 | command. */ |
c2c6d25f | 11326 | static void |
fa4cd53f | 11327 | until_break_command_continuation (void *arg, int err) |
43ff13b4 | 11328 | { |
bfec99b2 PA |
11329 | struct until_break_command_continuation_args *a = arg; |
11330 | ||
11331 | delete_breakpoint (a->breakpoint); | |
11332 | if (a->breakpoint2) | |
11333 | delete_breakpoint (a->breakpoint2); | |
186c406b | 11334 | delete_longjmp_breakpoint (a->thread_num); |
43ff13b4 JM |
11335 | } |
11336 | ||
c906108c | 11337 | void |
ae66c1fc | 11338 | until_break_command (char *arg, int from_tty, int anywhere) |
c906108c SS |
11339 | { |
11340 | struct symtabs_and_lines sals; | |
11341 | struct symtab_and_line sal; | |
8556afb4 PA |
11342 | struct frame_info *frame; |
11343 | struct gdbarch *frame_gdbarch; | |
11344 | struct frame_id stack_frame_id; | |
11345 | struct frame_id caller_frame_id; | |
c906108c | 11346 | struct breakpoint *breakpoint; |
f107f563 | 11347 | struct breakpoint *breakpoint2 = NULL; |
c906108c | 11348 | struct cleanup *old_chain; |
186c406b TT |
11349 | int thread; |
11350 | struct thread_info *tp; | |
c906108c SS |
11351 | |
11352 | clear_proceed_status (); | |
11353 | ||
11354 | /* Set a breakpoint where the user wants it and at return from | |
4a64f543 | 11355 | this function. */ |
c5aa993b | 11356 | |
1bfeeb0f | 11357 | if (last_displayed_sal_is_valid ()) |
f8eba3c6 | 11358 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
1bfeeb0f | 11359 | get_last_displayed_symtab (), |
f8eba3c6 | 11360 | get_last_displayed_line ()); |
c906108c | 11361 | else |
f8eba3c6 TT |
11362 | sals = decode_line_1 (&arg, DECODE_LINE_FUNFIRSTLINE, |
11363 | (struct symtab *) NULL, 0); | |
c5aa993b | 11364 | |
c906108c | 11365 | if (sals.nelts != 1) |
8a3fe4f8 | 11366 | error (_("Couldn't get information on specified line.")); |
c5aa993b | 11367 | |
c906108c | 11368 | sal = sals.sals[0]; |
4a64f543 | 11369 | xfree (sals.sals); /* malloc'd, so freed. */ |
c5aa993b | 11370 | |
c906108c | 11371 | if (*arg) |
8a3fe4f8 | 11372 | error (_("Junk at end of arguments.")); |
c5aa993b | 11373 | |
c906108c | 11374 | resolve_sal_pc (&sal); |
c5aa993b | 11375 | |
186c406b TT |
11376 | tp = inferior_thread (); |
11377 | thread = tp->num; | |
11378 | ||
883bc8d1 PA |
11379 | old_chain = make_cleanup (null_cleanup, NULL); |
11380 | ||
8556afb4 PA |
11381 | /* Note linespec handling above invalidates the frame chain. |
11382 | Installing a breakpoint also invalidates the frame chain (as it | |
11383 | may need to switch threads), so do any frame handling before | |
11384 | that. */ | |
11385 | ||
11386 | frame = get_selected_frame (NULL); | |
11387 | frame_gdbarch = get_frame_arch (frame); | |
11388 | stack_frame_id = get_stack_frame_id (frame); | |
11389 | caller_frame_id = frame_unwind_caller_id (frame); | |
883bc8d1 | 11390 | |
ae66c1fc EZ |
11391 | /* Keep within the current frame, or in frames called by the current |
11392 | one. */ | |
edb3359d | 11393 | |
883bc8d1 | 11394 | if (frame_id_p (caller_frame_id)) |
c906108c | 11395 | { |
883bc8d1 PA |
11396 | struct symtab_and_line sal2; |
11397 | ||
11398 | sal2 = find_pc_line (frame_unwind_caller_pc (frame), 0); | |
11399 | sal2.pc = frame_unwind_caller_pc (frame); | |
a6d9a66e | 11400 | breakpoint2 = set_momentary_breakpoint (frame_unwind_caller_arch (frame), |
883bc8d1 PA |
11401 | sal2, |
11402 | caller_frame_id, | |
f107f563 VP |
11403 | bp_until); |
11404 | make_cleanup_delete_breakpoint (breakpoint2); | |
186c406b | 11405 | |
883bc8d1 | 11406 | set_longjmp_breakpoint (tp, caller_frame_id); |
186c406b | 11407 | make_cleanup (delete_longjmp_breakpoint_cleanup, &thread); |
c906108c | 11408 | } |
c5aa993b | 11409 | |
c70a6932 JK |
11410 | /* set_momentary_breakpoint could invalidate FRAME. */ |
11411 | frame = NULL; | |
11412 | ||
883bc8d1 PA |
11413 | if (anywhere) |
11414 | /* If the user told us to continue until a specified location, | |
11415 | we don't specify a frame at which we need to stop. */ | |
11416 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11417 | null_frame_id, bp_until); | |
11418 | else | |
11419 | /* Otherwise, specify the selected frame, because we want to stop | |
11420 | only at the very same frame. */ | |
11421 | breakpoint = set_momentary_breakpoint (frame_gdbarch, sal, | |
11422 | stack_frame_id, bp_until); | |
11423 | make_cleanup_delete_breakpoint (breakpoint); | |
11424 | ||
a493e3e2 | 11425 | proceed (-1, GDB_SIGNAL_DEFAULT, 0); |
f107f563 | 11426 | |
4a64f543 MS |
11427 | /* If we are running asynchronously, and proceed call above has |
11428 | actually managed to start the target, arrange for breakpoints to | |
11429 | be deleted when the target stops. Otherwise, we're already | |
11430 | stopped and delete breakpoints via cleanup chain. */ | |
f107f563 | 11431 | |
8ea051c5 | 11432 | if (target_can_async_p () && is_running (inferior_ptid)) |
f107f563 | 11433 | { |
bfec99b2 PA |
11434 | struct until_break_command_continuation_args *args; |
11435 | args = xmalloc (sizeof (*args)); | |
f107f563 | 11436 | |
bfec99b2 PA |
11437 | args->breakpoint = breakpoint; |
11438 | args->breakpoint2 = breakpoint2; | |
186c406b | 11439 | args->thread_num = thread; |
f107f563 VP |
11440 | |
11441 | discard_cleanups (old_chain); | |
95e54da7 PA |
11442 | add_continuation (inferior_thread (), |
11443 | until_break_command_continuation, args, | |
604ead4a | 11444 | xfree); |
f107f563 VP |
11445 | } |
11446 | else | |
c5aa993b | 11447 | do_cleanups (old_chain); |
c906108c | 11448 | } |
ae66c1fc | 11449 | |
c906108c SS |
11450 | /* This function attempts to parse an optional "if <cond>" clause |
11451 | from the arg string. If one is not found, it returns NULL. | |
c5aa993b | 11452 | |
c906108c SS |
11453 | Else, it returns a pointer to the condition string. (It does not |
11454 | attempt to evaluate the string against a particular block.) And, | |
11455 | it updates arg to point to the first character following the parsed | |
4a64f543 | 11456 | if clause in the arg string. */ |
53a5351d | 11457 | |
916703c0 | 11458 | char * |
fba45db2 | 11459 | ep_parse_optional_if_clause (char **arg) |
c906108c | 11460 | { |
c5aa993b JM |
11461 | char *cond_string; |
11462 | ||
11463 | if (((*arg)[0] != 'i') || ((*arg)[1] != 'f') || !isspace ((*arg)[2])) | |
c906108c | 11464 | return NULL; |
c5aa993b | 11465 | |
4a64f543 | 11466 | /* Skip the "if" keyword. */ |
c906108c | 11467 | (*arg) += 2; |
c5aa993b | 11468 | |
c906108c | 11469 | /* Skip any extra leading whitespace, and record the start of the |
4a64f543 | 11470 | condition string. */ |
e9cafbcc | 11471 | *arg = skip_spaces (*arg); |
c906108c | 11472 | cond_string = *arg; |
c5aa993b | 11473 | |
4a64f543 MS |
11474 | /* Assume that the condition occupies the remainder of the arg |
11475 | string. */ | |
c906108c | 11476 | (*arg) += strlen (cond_string); |
c5aa993b | 11477 | |
c906108c SS |
11478 | return cond_string; |
11479 | } | |
c5aa993b | 11480 | |
c906108c SS |
11481 | /* Commands to deal with catching events, such as signals, exceptions, |
11482 | process start/exit, etc. */ | |
c5aa993b JM |
11483 | |
11484 | typedef enum | |
11485 | { | |
44feb3ce TT |
11486 | catch_fork_temporary, catch_vfork_temporary, |
11487 | catch_fork_permanent, catch_vfork_permanent | |
c5aa993b JM |
11488 | } |
11489 | catch_fork_kind; | |
11490 | ||
c906108c | 11491 | static void |
cc59ec59 MS |
11492 | catch_fork_command_1 (char *arg, int from_tty, |
11493 | struct cmd_list_element *command) | |
c906108c | 11494 | { |
a6d9a66e | 11495 | struct gdbarch *gdbarch = get_current_arch (); |
c5aa993b | 11496 | char *cond_string = NULL; |
44feb3ce TT |
11497 | catch_fork_kind fork_kind; |
11498 | int tempflag; | |
11499 | ||
11500 | fork_kind = (catch_fork_kind) (uintptr_t) get_cmd_context (command); | |
11501 | tempflag = (fork_kind == catch_fork_temporary | |
11502 | || fork_kind == catch_vfork_temporary); | |
c5aa993b | 11503 | |
44feb3ce TT |
11504 | if (!arg) |
11505 | arg = ""; | |
e9cafbcc | 11506 | arg = skip_spaces (arg); |
c5aa993b | 11507 | |
c906108c | 11508 | /* The allowed syntax is: |
c5aa993b JM |
11509 | catch [v]fork |
11510 | catch [v]fork if <cond> | |
11511 | ||
4a64f543 | 11512 | First, check if there's an if clause. */ |
c906108c | 11513 | cond_string = ep_parse_optional_if_clause (&arg); |
c5aa993b | 11514 | |
c906108c | 11515 | if ((*arg != '\0') && !isspace (*arg)) |
8a3fe4f8 | 11516 | error (_("Junk at end of arguments.")); |
c5aa993b | 11517 | |
c906108c | 11518 | /* If this target supports it, create a fork or vfork catchpoint |
4a64f543 | 11519 | and enable reporting of such events. */ |
c5aa993b JM |
11520 | switch (fork_kind) |
11521 | { | |
44feb3ce TT |
11522 | case catch_fork_temporary: |
11523 | case catch_fork_permanent: | |
a6d9a66e | 11524 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11525 | &catch_fork_breakpoint_ops); |
c906108c | 11526 | break; |
44feb3ce TT |
11527 | case catch_vfork_temporary: |
11528 | case catch_vfork_permanent: | |
a6d9a66e | 11529 | create_fork_vfork_event_catchpoint (gdbarch, tempflag, cond_string, |
ce78b96d | 11530 | &catch_vfork_breakpoint_ops); |
c906108c | 11531 | break; |
c5aa993b | 11532 | default: |
8a3fe4f8 | 11533 | error (_("unsupported or unknown fork kind; cannot catch it")); |
c906108c | 11534 | break; |
c5aa993b | 11535 | } |
c906108c SS |
11536 | } |
11537 | ||
11538 | static void | |
cc59ec59 MS |
11539 | catch_exec_command_1 (char *arg, int from_tty, |
11540 | struct cmd_list_element *command) | |
c906108c | 11541 | { |
b4d90040 | 11542 | struct exec_catchpoint *c; |
a6d9a66e | 11543 | struct gdbarch *gdbarch = get_current_arch (); |
44feb3ce | 11544 | int tempflag; |
c5aa993b | 11545 | char *cond_string = NULL; |
c906108c | 11546 | |
44feb3ce TT |
11547 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; |
11548 | ||
11549 | if (!arg) | |
11550 | arg = ""; | |
e9cafbcc | 11551 | arg = skip_spaces (arg); |
c906108c SS |
11552 | |
11553 | /* The allowed syntax is: | |
c5aa993b JM |
11554 | catch exec |
11555 | catch exec if <cond> | |
c906108c | 11556 | |
4a64f543 | 11557 | First, check if there's an if clause. */ |
c906108c SS |
11558 | cond_string = ep_parse_optional_if_clause (&arg); |
11559 | ||
11560 | if ((*arg != '\0') && !isspace (*arg)) | |
8a3fe4f8 | 11561 | error (_("Junk at end of arguments.")); |
c906108c | 11562 | |
b4d90040 PA |
11563 | c = XNEW (struct exec_catchpoint); |
11564 | init_catchpoint (&c->base, gdbarch, tempflag, cond_string, | |
11565 | &catch_exec_breakpoint_ops); | |
11566 | c->exec_pathname = NULL; | |
11567 | ||
3ea46bff | 11568 | install_breakpoint (0, &c->base, 1); |
c906108c | 11569 | } |
c5aa993b | 11570 | |
9ac4176b | 11571 | void |
28010a5d PA |
11572 | init_ada_exception_breakpoint (struct breakpoint *b, |
11573 | struct gdbarch *gdbarch, | |
11574 | struct symtab_and_line sal, | |
11575 | char *addr_string, | |
c0a91b2b | 11576 | const struct breakpoint_ops *ops, |
28010a5d PA |
11577 | int tempflag, |
11578 | int from_tty) | |
f7f9143b | 11579 | { |
f7f9143b JB |
11580 | if (from_tty) |
11581 | { | |
5af949e3 UW |
11582 | struct gdbarch *loc_gdbarch = get_sal_arch (sal); |
11583 | if (!loc_gdbarch) | |
11584 | loc_gdbarch = gdbarch; | |
11585 | ||
6c95b8df PA |
11586 | describe_other_breakpoints (loc_gdbarch, |
11587 | sal.pspace, sal.pc, sal.section, -1); | |
f7f9143b JB |
11588 | /* FIXME: brobecker/2006-12-28: Actually, re-implement a special |
11589 | version for exception catchpoints, because two catchpoints | |
11590 | used for different exception names will use the same address. | |
11591 | In this case, a "breakpoint ... also set at..." warning is | |
4a64f543 | 11592 | unproductive. Besides, the warning phrasing is also a bit |
e5dd4106 | 11593 | inappropriate, we should use the word catchpoint, and tell |
f7f9143b JB |
11594 | the user what type of catchpoint it is. The above is good |
11595 | enough for now, though. */ | |
11596 | } | |
11597 | ||
28010a5d | 11598 | init_raw_breakpoint (b, gdbarch, sal, bp_breakpoint, ops); |
f7f9143b JB |
11599 | |
11600 | b->enable_state = bp_enabled; | |
11601 | b->disposition = tempflag ? disp_del : disp_donttouch; | |
f7f9143b JB |
11602 | b->addr_string = addr_string; |
11603 | b->language = language_ada; | |
f7f9143b JB |
11604 | } |
11605 | ||
a96d9b2e SDJ |
11606 | /* Splits the argument using space as delimiter. Returns an xmalloc'd |
11607 | filter list, or NULL if no filtering is required. */ | |
11608 | static VEC(int) * | |
11609 | catch_syscall_split_args (char *arg) | |
11610 | { | |
11611 | VEC(int) *result = NULL; | |
29d0bb3d | 11612 | struct cleanup *cleanup = make_cleanup (VEC_cleanup (int), &result); |
a96d9b2e SDJ |
11613 | |
11614 | while (*arg != '\0') | |
11615 | { | |
11616 | int i, syscall_number; | |
11617 | char *endptr; | |
11618 | char cur_name[128]; | |
11619 | struct syscall s; | |
11620 | ||
11621 | /* Skip whitespace. */ | |
529480d0 | 11622 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11623 | |
11624 | for (i = 0; i < 127 && arg[i] && !isspace (arg[i]); ++i) | |
11625 | cur_name[i] = arg[i]; | |
11626 | cur_name[i] = '\0'; | |
11627 | arg += i; | |
11628 | ||
11629 | /* Check if the user provided a syscall name or a number. */ | |
11630 | syscall_number = (int) strtol (cur_name, &endptr, 0); | |
11631 | if (*endptr == '\0') | |
bccd0dd2 | 11632 | get_syscall_by_number (syscall_number, &s); |
a96d9b2e SDJ |
11633 | else |
11634 | { | |
11635 | /* We have a name. Let's check if it's valid and convert it | |
11636 | to a number. */ | |
11637 | get_syscall_by_name (cur_name, &s); | |
11638 | ||
11639 | if (s.number == UNKNOWN_SYSCALL) | |
4a64f543 MS |
11640 | /* Here we have to issue an error instead of a warning, |
11641 | because GDB cannot do anything useful if there's no | |
11642 | syscall number to be caught. */ | |
a96d9b2e SDJ |
11643 | error (_("Unknown syscall name '%s'."), cur_name); |
11644 | } | |
11645 | ||
11646 | /* Ok, it's valid. */ | |
11647 | VEC_safe_push (int, result, s.number); | |
11648 | } | |
11649 | ||
11650 | discard_cleanups (cleanup); | |
11651 | return result; | |
11652 | } | |
11653 | ||
11654 | /* Implement the "catch syscall" command. */ | |
11655 | ||
11656 | static void | |
cc59ec59 MS |
11657 | catch_syscall_command_1 (char *arg, int from_tty, |
11658 | struct cmd_list_element *command) | |
a96d9b2e SDJ |
11659 | { |
11660 | int tempflag; | |
11661 | VEC(int) *filter; | |
11662 | struct syscall s; | |
11663 | struct gdbarch *gdbarch = get_current_arch (); | |
11664 | ||
11665 | /* Checking if the feature if supported. */ | |
11666 | if (gdbarch_get_syscall_number_p (gdbarch) == 0) | |
11667 | error (_("The feature 'catch syscall' is not supported on \ | |
ea666128 | 11668 | this architecture yet.")); |
a96d9b2e SDJ |
11669 | |
11670 | tempflag = get_cmd_context (command) == CATCH_TEMPORARY; | |
11671 | ||
e9cafbcc | 11672 | arg = skip_spaces (arg); |
a96d9b2e SDJ |
11673 | |
11674 | /* We need to do this first "dummy" translation in order | |
11675 | to get the syscall XML file loaded or, most important, | |
11676 | to display a warning to the user if there's no XML file | |
11677 | for his/her architecture. */ | |
11678 | get_syscall_by_number (0, &s); | |
11679 | ||
11680 | /* The allowed syntax is: | |
11681 | catch syscall | |
11682 | catch syscall <name | number> [<name | number> ... <name | number>] | |
11683 | ||
11684 | Let's check if there's a syscall name. */ | |
11685 | ||
11686 | if (arg != NULL) | |
11687 | filter = catch_syscall_split_args (arg); | |
11688 | else | |
11689 | filter = NULL; | |
11690 | ||
11691 | create_syscall_event_catchpoint (tempflag, filter, | |
11692 | &catch_syscall_breakpoint_ops); | |
11693 | } | |
11694 | ||
c906108c | 11695 | static void |
fba45db2 | 11696 | catch_command (char *arg, int from_tty) |
c906108c | 11697 | { |
44feb3ce | 11698 | error (_("Catch requires an event name.")); |
c906108c SS |
11699 | } |
11700 | \f | |
11701 | ||
11702 | static void | |
fba45db2 | 11703 | tcatch_command (char *arg, int from_tty) |
c906108c | 11704 | { |
44feb3ce | 11705 | error (_("Catch requires an event name.")); |
c906108c SS |
11706 | } |
11707 | ||
8a2c437b TT |
11708 | /* A qsort comparison function that sorts breakpoints in order. */ |
11709 | ||
11710 | static int | |
11711 | compare_breakpoints (const void *a, const void *b) | |
11712 | { | |
11713 | const breakpoint_p *ba = a; | |
11714 | uintptr_t ua = (uintptr_t) *ba; | |
11715 | const breakpoint_p *bb = b; | |
11716 | uintptr_t ub = (uintptr_t) *bb; | |
11717 | ||
11718 | if ((*ba)->number < (*bb)->number) | |
11719 | return -1; | |
11720 | else if ((*ba)->number > (*bb)->number) | |
11721 | return 1; | |
11722 | ||
11723 | /* Now sort by address, in case we see, e..g, two breakpoints with | |
11724 | the number 0. */ | |
11725 | if (ua < ub) | |
11726 | return -1; | |
94b0e70d | 11727 | return ua > ub ? 1 : 0; |
8a2c437b TT |
11728 | } |
11729 | ||
80f8a6eb | 11730 | /* Delete breakpoints by address or line. */ |
c906108c SS |
11731 | |
11732 | static void | |
fba45db2 | 11733 | clear_command (char *arg, int from_tty) |
c906108c | 11734 | { |
8a2c437b | 11735 | struct breakpoint *b, *prev; |
d6e956e5 VP |
11736 | VEC(breakpoint_p) *found = 0; |
11737 | int ix; | |
c906108c SS |
11738 | int default_match; |
11739 | struct symtabs_and_lines sals; | |
11740 | struct symtab_and_line sal; | |
c906108c | 11741 | int i; |
8a2c437b | 11742 | struct cleanup *cleanups = make_cleanup (null_cleanup, NULL); |
c906108c SS |
11743 | |
11744 | if (arg) | |
11745 | { | |
39cf75f7 DE |
11746 | sals = decode_line_with_current_source (arg, |
11747 | (DECODE_LINE_FUNFIRSTLINE | |
11748 | | DECODE_LINE_LIST_MODE)); | |
cf4ded82 | 11749 | make_cleanup (xfree, sals.sals); |
c906108c SS |
11750 | default_match = 0; |
11751 | } | |
11752 | else | |
11753 | { | |
c5aa993b | 11754 | sals.sals = (struct symtab_and_line *) |
c906108c | 11755 | xmalloc (sizeof (struct symtab_and_line)); |
80f8a6eb | 11756 | make_cleanup (xfree, sals.sals); |
4a64f543 | 11757 | init_sal (&sal); /* Initialize to zeroes. */ |
1bfeeb0f JL |
11758 | |
11759 | /* Set sal's line, symtab, pc, and pspace to the values | |
11760 | corresponding to the last call to print_frame_info. If the | |
11761 | codepoint is not valid, this will set all the fields to 0. */ | |
11762 | get_last_displayed_sal (&sal); | |
c906108c | 11763 | if (sal.symtab == 0) |
8a3fe4f8 | 11764 | error (_("No source file specified.")); |
c906108c SS |
11765 | |
11766 | sals.sals[0] = sal; | |
11767 | sals.nelts = 1; | |
11768 | ||
11769 | default_match = 1; | |
11770 | } | |
11771 | ||
4a64f543 MS |
11772 | /* We don't call resolve_sal_pc here. That's not as bad as it |
11773 | seems, because all existing breakpoints typically have both | |
11774 | file/line and pc set. So, if clear is given file/line, we can | |
11775 | match this to existing breakpoint without obtaining pc at all. | |
ed0616c6 VP |
11776 | |
11777 | We only support clearing given the address explicitly | |
11778 | present in breakpoint table. Say, we've set breakpoint | |
4a64f543 | 11779 | at file:line. There were several PC values for that file:line, |
ed0616c6 | 11780 | due to optimization, all in one block. |
4a64f543 MS |
11781 | |
11782 | We've picked one PC value. If "clear" is issued with another | |
ed0616c6 VP |
11783 | PC corresponding to the same file:line, the breakpoint won't |
11784 | be cleared. We probably can still clear the breakpoint, but | |
11785 | since the other PC value is never presented to user, user | |
11786 | can only find it by guessing, and it does not seem important | |
11787 | to support that. */ | |
11788 | ||
4a64f543 MS |
11789 | /* For each line spec given, delete bps which correspond to it. Do |
11790 | it in two passes, solely to preserve the current behavior that | |
11791 | from_tty is forced true if we delete more than one | |
11792 | breakpoint. */ | |
c906108c | 11793 | |
80f8a6eb | 11794 | found = NULL; |
8a2c437b | 11795 | make_cleanup (VEC_cleanup (breakpoint_p), &found); |
c906108c SS |
11796 | for (i = 0; i < sals.nelts; i++) |
11797 | { | |
05cba821 JK |
11798 | const char *sal_fullname; |
11799 | ||
c906108c | 11800 | /* If exact pc given, clear bpts at that pc. |
c5aa993b JM |
11801 | If line given (pc == 0), clear all bpts on specified line. |
11802 | If defaulting, clear all bpts on default line | |
c906108c | 11803 | or at default pc. |
c5aa993b JM |
11804 | |
11805 | defaulting sal.pc != 0 tests to do | |
11806 | ||
11807 | 0 1 pc | |
11808 | 1 1 pc _and_ line | |
11809 | 0 0 line | |
11810 | 1 0 <can't happen> */ | |
c906108c SS |
11811 | |
11812 | sal = sals.sals[i]; | |
05cba821 JK |
11813 | sal_fullname = (sal.symtab == NULL |
11814 | ? NULL : symtab_to_fullname (sal.symtab)); | |
c906108c | 11815 | |
4a64f543 | 11816 | /* Find all matching breakpoints and add them to 'found'. */ |
d6e956e5 | 11817 | ALL_BREAKPOINTS (b) |
c5aa993b | 11818 | { |
0d381245 | 11819 | int match = 0; |
4a64f543 | 11820 | /* Are we going to delete b? */ |
cc60f2e3 | 11821 | if (b->type != bp_none && !is_watchpoint (b)) |
0d381245 VP |
11822 | { |
11823 | struct bp_location *loc = b->loc; | |
11824 | for (; loc; loc = loc->next) | |
11825 | { | |
f8eba3c6 TT |
11826 | /* If the user specified file:line, don't allow a PC |
11827 | match. This matches historical gdb behavior. */ | |
11828 | int pc_match = (!sal.explicit_line | |
11829 | && sal.pc | |
11830 | && (loc->pspace == sal.pspace) | |
11831 | && (loc->address == sal.pc) | |
11832 | && (!section_is_overlay (loc->section) | |
11833 | || loc->section == sal.section)); | |
4aac40c8 TT |
11834 | int line_match = 0; |
11835 | ||
11836 | if ((default_match || sal.explicit_line) | |
2f202fde | 11837 | && loc->symtab != NULL |
05cba821 | 11838 | && sal_fullname != NULL |
4aac40c8 | 11839 | && sal.pspace == loc->pspace |
05cba821 JK |
11840 | && loc->line_number == sal.line |
11841 | && filename_cmp (symtab_to_fullname (loc->symtab), | |
11842 | sal_fullname) == 0) | |
11843 | line_match = 1; | |
4aac40c8 | 11844 | |
0d381245 VP |
11845 | if (pc_match || line_match) |
11846 | { | |
11847 | match = 1; | |
11848 | break; | |
11849 | } | |
11850 | } | |
11851 | } | |
11852 | ||
11853 | if (match) | |
d6e956e5 | 11854 | VEC_safe_push(breakpoint_p, found, b); |
c906108c | 11855 | } |
80f8a6eb | 11856 | } |
8a2c437b | 11857 | |
80f8a6eb | 11858 | /* Now go thru the 'found' chain and delete them. */ |
d6e956e5 | 11859 | if (VEC_empty(breakpoint_p, found)) |
80f8a6eb MS |
11860 | { |
11861 | if (arg) | |
8a3fe4f8 | 11862 | error (_("No breakpoint at %s."), arg); |
80f8a6eb | 11863 | else |
8a3fe4f8 | 11864 | error (_("No breakpoint at this line.")); |
80f8a6eb | 11865 | } |
c906108c | 11866 | |
8a2c437b TT |
11867 | /* Remove duplicates from the vec. */ |
11868 | qsort (VEC_address (breakpoint_p, found), | |
11869 | VEC_length (breakpoint_p, found), | |
11870 | sizeof (breakpoint_p), | |
11871 | compare_breakpoints); | |
11872 | prev = VEC_index (breakpoint_p, found, 0); | |
11873 | for (ix = 1; VEC_iterate (breakpoint_p, found, ix, b); ++ix) | |
11874 | { | |
11875 | if (b == prev) | |
11876 | { | |
11877 | VEC_ordered_remove (breakpoint_p, found, ix); | |
11878 | --ix; | |
11879 | } | |
11880 | } | |
11881 | ||
d6e956e5 | 11882 | if (VEC_length(breakpoint_p, found) > 1) |
4a64f543 | 11883 | from_tty = 1; /* Always report if deleted more than one. */ |
80f8a6eb | 11884 | if (from_tty) |
a3f17187 | 11885 | { |
d6e956e5 | 11886 | if (VEC_length(breakpoint_p, found) == 1) |
a3f17187 AC |
11887 | printf_unfiltered (_("Deleted breakpoint ")); |
11888 | else | |
11889 | printf_unfiltered (_("Deleted breakpoints ")); | |
11890 | } | |
d6e956e5 VP |
11891 | |
11892 | for (ix = 0; VEC_iterate(breakpoint_p, found, ix, b); ix++) | |
80f8a6eb | 11893 | { |
c5aa993b | 11894 | if (from_tty) |
d6e956e5 VP |
11895 | printf_unfiltered ("%d ", b->number); |
11896 | delete_breakpoint (b); | |
c906108c | 11897 | } |
80f8a6eb MS |
11898 | if (from_tty) |
11899 | putchar_unfiltered ('\n'); | |
8a2c437b TT |
11900 | |
11901 | do_cleanups (cleanups); | |
c906108c SS |
11902 | } |
11903 | \f | |
11904 | /* Delete breakpoint in BS if they are `delete' breakpoints and | |
11905 | all breakpoints that are marked for deletion, whether hit or not. | |
11906 | This is called after any breakpoint is hit, or after errors. */ | |
11907 | ||
11908 | void | |
fba45db2 | 11909 | breakpoint_auto_delete (bpstat bs) |
c906108c | 11910 | { |
35df4500 | 11911 | struct breakpoint *b, *b_tmp; |
c906108c SS |
11912 | |
11913 | for (; bs; bs = bs->next) | |
f431efe5 PA |
11914 | if (bs->breakpoint_at |
11915 | && bs->breakpoint_at->disposition == disp_del | |
c906108c | 11916 | && bs->stop) |
f431efe5 | 11917 | delete_breakpoint (bs->breakpoint_at); |
c906108c | 11918 | |
35df4500 | 11919 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 11920 | { |
b5de0fa7 | 11921 | if (b->disposition == disp_del_at_next_stop) |
c5aa993b JM |
11922 | delete_breakpoint (b); |
11923 | } | |
c906108c SS |
11924 | } |
11925 | ||
4a64f543 MS |
11926 | /* A comparison function for bp_location AP and BP being interfaced to |
11927 | qsort. Sort elements primarily by their ADDRESS (no matter what | |
11928 | does breakpoint_address_is_meaningful say for its OWNER), | |
11929 | secondarily by ordering first bp_permanent OWNERed elements and | |
11930 | terciarily just ensuring the array is sorted stable way despite | |
e5dd4106 | 11931 | qsort being an unstable algorithm. */ |
876fa593 JK |
11932 | |
11933 | static int | |
494cfb0f | 11934 | bp_location_compare (const void *ap, const void *bp) |
876fa593 | 11935 | { |
494cfb0f JK |
11936 | struct bp_location *a = *(void **) ap; |
11937 | struct bp_location *b = *(void **) bp; | |
2bdf28a0 | 11938 | /* A and B come from existing breakpoints having non-NULL OWNER. */ |
876fa593 JK |
11939 | int a_perm = a->owner->enable_state == bp_permanent; |
11940 | int b_perm = b->owner->enable_state == bp_permanent; | |
11941 | ||
11942 | if (a->address != b->address) | |
11943 | return (a->address > b->address) - (a->address < b->address); | |
11944 | ||
dea2aa5f LM |
11945 | /* Sort locations at the same address by their pspace number, keeping |
11946 | locations of the same inferior (in a multi-inferior environment) | |
11947 | grouped. */ | |
11948 | ||
11949 | if (a->pspace->num != b->pspace->num) | |
11950 | return ((a->pspace->num > b->pspace->num) | |
11951 | - (a->pspace->num < b->pspace->num)); | |
11952 | ||
876fa593 JK |
11953 | /* Sort permanent breakpoints first. */ |
11954 | if (a_perm != b_perm) | |
11955 | return (a_perm < b_perm) - (a_perm > b_perm); | |
11956 | ||
c56a97f9 JK |
11957 | /* Make the internal GDB representation stable across GDB runs |
11958 | where A and B memory inside GDB can differ. Breakpoint locations of | |
11959 | the same type at the same address can be sorted in arbitrary order. */ | |
876fa593 JK |
11960 | |
11961 | if (a->owner->number != b->owner->number) | |
c56a97f9 JK |
11962 | return ((a->owner->number > b->owner->number) |
11963 | - (a->owner->number < b->owner->number)); | |
876fa593 JK |
11964 | |
11965 | return (a > b) - (a < b); | |
11966 | } | |
11967 | ||
876fa593 | 11968 | /* Set bp_location_placed_address_before_address_max and |
4a64f543 MS |
11969 | bp_location_shadow_len_after_address_max according to the current |
11970 | content of the bp_location array. */ | |
f7545552 TT |
11971 | |
11972 | static void | |
876fa593 | 11973 | bp_location_target_extensions_update (void) |
f7545552 | 11974 | { |
876fa593 JK |
11975 | struct bp_location *bl, **blp_tmp; |
11976 | ||
11977 | bp_location_placed_address_before_address_max = 0; | |
11978 | bp_location_shadow_len_after_address_max = 0; | |
11979 | ||
11980 | ALL_BP_LOCATIONS (bl, blp_tmp) | |
11981 | { | |
11982 | CORE_ADDR start, end, addr; | |
11983 | ||
11984 | if (!bp_location_has_shadow (bl)) | |
11985 | continue; | |
11986 | ||
11987 | start = bl->target_info.placed_address; | |
11988 | end = start + bl->target_info.shadow_len; | |
11989 | ||
11990 | gdb_assert (bl->address >= start); | |
11991 | addr = bl->address - start; | |
11992 | if (addr > bp_location_placed_address_before_address_max) | |
11993 | bp_location_placed_address_before_address_max = addr; | |
11994 | ||
11995 | /* Zero SHADOW_LEN would not pass bp_location_has_shadow. */ | |
11996 | ||
11997 | gdb_assert (bl->address < end); | |
11998 | addr = end - bl->address; | |
11999 | if (addr > bp_location_shadow_len_after_address_max) | |
12000 | bp_location_shadow_len_after_address_max = addr; | |
12001 | } | |
f7545552 TT |
12002 | } |
12003 | ||
1e4d1764 YQ |
12004 | /* Download tracepoint locations if they haven't been. */ |
12005 | ||
12006 | static void | |
12007 | download_tracepoint_locations (void) | |
12008 | { | |
7ed2c994 | 12009 | struct breakpoint *b; |
1e4d1764 YQ |
12010 | struct cleanup *old_chain; |
12011 | ||
12012 | if (!target_can_download_tracepoint ()) | |
12013 | return; | |
12014 | ||
12015 | old_chain = save_current_space_and_thread (); | |
12016 | ||
7ed2c994 | 12017 | ALL_TRACEPOINTS (b) |
1e4d1764 | 12018 | { |
7ed2c994 | 12019 | struct bp_location *bl; |
1e4d1764 | 12020 | struct tracepoint *t; |
f2a8bc8a | 12021 | int bp_location_downloaded = 0; |
1e4d1764 | 12022 | |
7ed2c994 | 12023 | if ((b->type == bp_fast_tracepoint |
1e4d1764 YQ |
12024 | ? !may_insert_fast_tracepoints |
12025 | : !may_insert_tracepoints)) | |
12026 | continue; | |
12027 | ||
7ed2c994 YQ |
12028 | for (bl = b->loc; bl; bl = bl->next) |
12029 | { | |
12030 | /* In tracepoint, locations are _never_ duplicated, so | |
12031 | should_be_inserted is equivalent to | |
12032 | unduplicated_should_be_inserted. */ | |
12033 | if (!should_be_inserted (bl) || bl->inserted) | |
12034 | continue; | |
1e4d1764 | 12035 | |
7ed2c994 | 12036 | switch_to_program_space_and_thread (bl->pspace); |
1e4d1764 | 12037 | |
7ed2c994 | 12038 | target_download_tracepoint (bl); |
1e4d1764 | 12039 | |
7ed2c994 | 12040 | bl->inserted = 1; |
f2a8bc8a | 12041 | bp_location_downloaded = 1; |
7ed2c994 YQ |
12042 | } |
12043 | t = (struct tracepoint *) b; | |
12044 | t->number_on_target = b->number; | |
f2a8bc8a YQ |
12045 | if (bp_location_downloaded) |
12046 | observer_notify_breakpoint_modified (b); | |
1e4d1764 YQ |
12047 | } |
12048 | ||
12049 | do_cleanups (old_chain); | |
12050 | } | |
12051 | ||
934709f0 PW |
12052 | /* Swap the insertion/duplication state between two locations. */ |
12053 | ||
12054 | static void | |
12055 | swap_insertion (struct bp_location *left, struct bp_location *right) | |
12056 | { | |
12057 | const int left_inserted = left->inserted; | |
12058 | const int left_duplicate = left->duplicate; | |
b775012e | 12059 | const int left_needs_update = left->needs_update; |
934709f0 PW |
12060 | const struct bp_target_info left_target_info = left->target_info; |
12061 | ||
1e4d1764 YQ |
12062 | /* Locations of tracepoints can never be duplicated. */ |
12063 | if (is_tracepoint (left->owner)) | |
12064 | gdb_assert (!left->duplicate); | |
12065 | if (is_tracepoint (right->owner)) | |
12066 | gdb_assert (!right->duplicate); | |
12067 | ||
934709f0 PW |
12068 | left->inserted = right->inserted; |
12069 | left->duplicate = right->duplicate; | |
b775012e | 12070 | left->needs_update = right->needs_update; |
934709f0 PW |
12071 | left->target_info = right->target_info; |
12072 | right->inserted = left_inserted; | |
12073 | right->duplicate = left_duplicate; | |
b775012e | 12074 | right->needs_update = left_needs_update; |
934709f0 PW |
12075 | right->target_info = left_target_info; |
12076 | } | |
12077 | ||
b775012e LM |
12078 | /* Force the re-insertion of the locations at ADDRESS. This is called |
12079 | once a new/deleted/modified duplicate location is found and we are evaluating | |
12080 | conditions on the target's side. Such conditions need to be updated on | |
12081 | the target. */ | |
12082 | ||
12083 | static void | |
12084 | force_breakpoint_reinsertion (struct bp_location *bl) | |
12085 | { | |
12086 | struct bp_location **locp = NULL, **loc2p; | |
12087 | struct bp_location *loc; | |
12088 | CORE_ADDR address = 0; | |
12089 | int pspace_num; | |
12090 | ||
12091 | address = bl->address; | |
12092 | pspace_num = bl->pspace->num; | |
12093 | ||
12094 | /* This is only meaningful if the target is | |
12095 | evaluating conditions and if the user has | |
12096 | opted for condition evaluation on the target's | |
12097 | side. */ | |
12098 | if (gdb_evaluates_breakpoint_condition_p () | |
12099 | || !target_supports_evaluation_of_breakpoint_conditions ()) | |
12100 | return; | |
12101 | ||
12102 | /* Flag all breakpoint locations with this address and | |
12103 | the same program space as the location | |
12104 | as "its condition has changed". We need to | |
12105 | update the conditions on the target's side. */ | |
12106 | ALL_BP_LOCATIONS_AT_ADDR (loc2p, locp, address) | |
12107 | { | |
12108 | loc = *loc2p; | |
12109 | ||
12110 | if (!is_breakpoint (loc->owner) | |
12111 | || pspace_num != loc->pspace->num) | |
12112 | continue; | |
12113 | ||
12114 | /* Flag the location appropriately. We use a different state to | |
12115 | let everyone know that we already updated the set of locations | |
12116 | with addr bl->address and program space bl->pspace. This is so | |
12117 | we don't have to keep calling these functions just to mark locations | |
12118 | that have already been marked. */ | |
12119 | loc->condition_changed = condition_updated; | |
12120 | ||
12121 | /* Free the agent expression bytecode as well. We will compute | |
12122 | it later on. */ | |
12123 | if (loc->cond_bytecode) | |
12124 | { | |
12125 | free_agent_expr (loc->cond_bytecode); | |
12126 | loc->cond_bytecode = NULL; | |
12127 | } | |
12128 | } | |
12129 | } | |
12130 | ||
4cd9bd08 | 12131 | /* If SHOULD_INSERT is false, do not insert any breakpoint locations |
b60e7edf PA |
12132 | into the inferior, only remove already-inserted locations that no |
12133 | longer should be inserted. Functions that delete a breakpoint or | |
12134 | breakpoints should pass false, so that deleting a breakpoint | |
12135 | doesn't have the side effect of inserting the locations of other | |
12136 | breakpoints that are marked not-inserted, but should_be_inserted | |
12137 | returns true on them. | |
12138 | ||
12139 | This behaviour is useful is situations close to tear-down -- e.g., | |
12140 | after an exec, while the target still has execution, but breakpoint | |
12141 | shadows of the previous executable image should *NOT* be restored | |
12142 | to the new image; or before detaching, where the target still has | |
12143 | execution and wants to delete breakpoints from GDB's lists, and all | |
12144 | breakpoints had already been removed from the inferior. */ | |
12145 | ||
0d381245 | 12146 | static void |
b60e7edf | 12147 | update_global_location_list (int should_insert) |
0d381245 | 12148 | { |
74960c60 | 12149 | struct breakpoint *b; |
876fa593 | 12150 | struct bp_location **locp, *loc; |
f7545552 | 12151 | struct cleanup *cleanups; |
b775012e LM |
12152 | /* Last breakpoint location address that was marked for update. */ |
12153 | CORE_ADDR last_addr = 0; | |
12154 | /* Last breakpoint location program space that was marked for update. */ | |
12155 | int last_pspace_num = -1; | |
f7545552 | 12156 | |
2d134ed3 PA |
12157 | /* Used in the duplicates detection below. When iterating over all |
12158 | bp_locations, points to the first bp_location of a given address. | |
12159 | Breakpoints and watchpoints of different types are never | |
12160 | duplicates of each other. Keep one pointer for each type of | |
12161 | breakpoint/watchpoint, so we only need to loop over all locations | |
12162 | once. */ | |
12163 | struct bp_location *bp_loc_first; /* breakpoint */ | |
12164 | struct bp_location *wp_loc_first; /* hardware watchpoint */ | |
12165 | struct bp_location *awp_loc_first; /* access watchpoint */ | |
12166 | struct bp_location *rwp_loc_first; /* read watchpoint */ | |
876fa593 | 12167 | |
4a64f543 MS |
12168 | /* Saved former bp_location array which we compare against the newly |
12169 | built bp_location from the current state of ALL_BREAKPOINTS. */ | |
876fa593 JK |
12170 | struct bp_location **old_location, **old_locp; |
12171 | unsigned old_location_count; | |
12172 | ||
12173 | old_location = bp_location; | |
12174 | old_location_count = bp_location_count; | |
12175 | bp_location = NULL; | |
12176 | bp_location_count = 0; | |
12177 | cleanups = make_cleanup (xfree, old_location); | |
0d381245 | 12178 | |
74960c60 | 12179 | ALL_BREAKPOINTS (b) |
876fa593 JK |
12180 | for (loc = b->loc; loc; loc = loc->next) |
12181 | bp_location_count++; | |
12182 | ||
12183 | bp_location = xmalloc (sizeof (*bp_location) * bp_location_count); | |
12184 | locp = bp_location; | |
12185 | ALL_BREAKPOINTS (b) | |
12186 | for (loc = b->loc; loc; loc = loc->next) | |
12187 | *locp++ = loc; | |
12188 | qsort (bp_location, bp_location_count, sizeof (*bp_location), | |
494cfb0f | 12189 | bp_location_compare); |
876fa593 JK |
12190 | |
12191 | bp_location_target_extensions_update (); | |
74960c60 | 12192 | |
4a64f543 MS |
12193 | /* Identify bp_location instances that are no longer present in the |
12194 | new list, and therefore should be freed. Note that it's not | |
12195 | necessary that those locations should be removed from inferior -- | |
12196 | if there's another location at the same address (previously | |
12197 | marked as duplicate), we don't need to remove/insert the | |
12198 | location. | |
876fa593 | 12199 | |
4a64f543 MS |
12200 | LOCP is kept in sync with OLD_LOCP, each pointing to the current |
12201 | and former bp_location array state respectively. */ | |
876fa593 JK |
12202 | |
12203 | locp = bp_location; | |
12204 | for (old_locp = old_location; old_locp < old_location + old_location_count; | |
12205 | old_locp++) | |
74960c60 | 12206 | { |
876fa593 | 12207 | struct bp_location *old_loc = *old_locp; |
c7d46a38 | 12208 | struct bp_location **loc2p; |
876fa593 | 12209 | |
e5dd4106 | 12210 | /* Tells if 'old_loc' is found among the new locations. If |
4a64f543 | 12211 | not, we have to free it. */ |
c7d46a38 | 12212 | int found_object = 0; |
20874c92 VP |
12213 | /* Tells if the location should remain inserted in the target. */ |
12214 | int keep_in_target = 0; | |
12215 | int removed = 0; | |
876fa593 | 12216 | |
4a64f543 MS |
12217 | /* Skip LOCP entries which will definitely never be needed. |
12218 | Stop either at or being the one matching OLD_LOC. */ | |
876fa593 | 12219 | while (locp < bp_location + bp_location_count |
c7d46a38 | 12220 | && (*locp)->address < old_loc->address) |
876fa593 | 12221 | locp++; |
c7d46a38 PA |
12222 | |
12223 | for (loc2p = locp; | |
12224 | (loc2p < bp_location + bp_location_count | |
12225 | && (*loc2p)->address == old_loc->address); | |
12226 | loc2p++) | |
12227 | { | |
b775012e LM |
12228 | /* Check if this is a new/duplicated location or a duplicated |
12229 | location that had its condition modified. If so, we want to send | |
12230 | its condition to the target if evaluation of conditions is taking | |
12231 | place there. */ | |
12232 | if ((*loc2p)->condition_changed == condition_modified | |
12233 | && (last_addr != old_loc->address | |
12234 | || last_pspace_num != old_loc->pspace->num)) | |
c7d46a38 | 12235 | { |
b775012e LM |
12236 | force_breakpoint_reinsertion (*loc2p); |
12237 | last_pspace_num = old_loc->pspace->num; | |
c7d46a38 | 12238 | } |
b775012e LM |
12239 | |
12240 | if (*loc2p == old_loc) | |
12241 | found_object = 1; | |
c7d46a38 | 12242 | } |
74960c60 | 12243 | |
b775012e LM |
12244 | /* We have already handled this address, update it so that we don't |
12245 | have to go through updates again. */ | |
12246 | last_addr = old_loc->address; | |
12247 | ||
12248 | /* Target-side condition evaluation: Handle deleted locations. */ | |
12249 | if (!found_object) | |
12250 | force_breakpoint_reinsertion (old_loc); | |
12251 | ||
4a64f543 MS |
12252 | /* If this location is no longer present, and inserted, look if |
12253 | there's maybe a new location at the same address. If so, | |
12254 | mark that one inserted, and don't remove this one. This is | |
12255 | needed so that we don't have a time window where a breakpoint | |
12256 | at certain location is not inserted. */ | |
74960c60 | 12257 | |
876fa593 | 12258 | if (old_loc->inserted) |
0d381245 | 12259 | { |
4a64f543 MS |
12260 | /* If the location is inserted now, we might have to remove |
12261 | it. */ | |
74960c60 | 12262 | |
876fa593 | 12263 | if (found_object && should_be_inserted (old_loc)) |
74960c60 | 12264 | { |
4a64f543 MS |
12265 | /* The location is still present in the location list, |
12266 | and still should be inserted. Don't do anything. */ | |
20874c92 | 12267 | keep_in_target = 1; |
74960c60 VP |
12268 | } |
12269 | else | |
12270 | { | |
b775012e LM |
12271 | /* This location still exists, but it won't be kept in the |
12272 | target since it may have been disabled. We proceed to | |
12273 | remove its target-side condition. */ | |
12274 | ||
4a64f543 MS |
12275 | /* The location is either no longer present, or got |
12276 | disabled. See if there's another location at the | |
12277 | same address, in which case we don't need to remove | |
12278 | this one from the target. */ | |
876fa593 | 12279 | |
2bdf28a0 | 12280 | /* OLD_LOC comes from existing struct breakpoint. */ |
876fa593 JK |
12281 | if (breakpoint_address_is_meaningful (old_loc->owner)) |
12282 | { | |
876fa593 | 12283 | for (loc2p = locp; |
c7d46a38 PA |
12284 | (loc2p < bp_location + bp_location_count |
12285 | && (*loc2p)->address == old_loc->address); | |
876fa593 JK |
12286 | loc2p++) |
12287 | { | |
12288 | struct bp_location *loc2 = *loc2p; | |
12289 | ||
2d134ed3 | 12290 | if (breakpoint_locations_match (loc2, old_loc)) |
c7d46a38 | 12291 | { |
85d721b8 PA |
12292 | /* Read watchpoint locations are switched to |
12293 | access watchpoints, if the former are not | |
12294 | supported, but the latter are. */ | |
12295 | if (is_hardware_watchpoint (old_loc->owner)) | |
12296 | { | |
12297 | gdb_assert (is_hardware_watchpoint (loc2->owner)); | |
12298 | loc2->watchpoint_type = old_loc->watchpoint_type; | |
12299 | } | |
12300 | ||
934709f0 PW |
12301 | /* loc2 is a duplicated location. We need to check |
12302 | if it should be inserted in case it will be | |
12303 | unduplicated. */ | |
12304 | if (loc2 != old_loc | |
12305 | && unduplicated_should_be_inserted (loc2)) | |
c7d46a38 | 12306 | { |
934709f0 | 12307 | swap_insertion (old_loc, loc2); |
c7d46a38 PA |
12308 | keep_in_target = 1; |
12309 | break; | |
12310 | } | |
876fa593 JK |
12311 | } |
12312 | } | |
12313 | } | |
74960c60 VP |
12314 | } |
12315 | ||
20874c92 VP |
12316 | if (!keep_in_target) |
12317 | { | |
876fa593 | 12318 | if (remove_breakpoint (old_loc, mark_uninserted)) |
20874c92 | 12319 | { |
4a64f543 MS |
12320 | /* This is just about all we can do. We could keep |
12321 | this location on the global list, and try to | |
12322 | remove it next time, but there's no particular | |
12323 | reason why we will succeed next time. | |
20874c92 | 12324 | |
4a64f543 MS |
12325 | Note that at this point, old_loc->owner is still |
12326 | valid, as delete_breakpoint frees the breakpoint | |
12327 | only after calling us. */ | |
3e43a32a MS |
12328 | printf_filtered (_("warning: Error removing " |
12329 | "breakpoint %d\n"), | |
876fa593 | 12330 | old_loc->owner->number); |
20874c92 VP |
12331 | } |
12332 | removed = 1; | |
12333 | } | |
0d381245 | 12334 | } |
74960c60 VP |
12335 | |
12336 | if (!found_object) | |
1c5cfe86 | 12337 | { |
db82e815 PA |
12338 | if (removed && non_stop |
12339 | && breakpoint_address_is_meaningful (old_loc->owner) | |
12340 | && !is_hardware_watchpoint (old_loc->owner)) | |
20874c92 | 12341 | { |
db82e815 PA |
12342 | /* This location was removed from the target. In |
12343 | non-stop mode, a race condition is possible where | |
12344 | we've removed a breakpoint, but stop events for that | |
12345 | breakpoint are already queued and will arrive later. | |
12346 | We apply an heuristic to be able to distinguish such | |
12347 | SIGTRAPs from other random SIGTRAPs: we keep this | |
12348 | breakpoint location for a bit, and will retire it | |
12349 | after we see some number of events. The theory here | |
12350 | is that reporting of events should, "on the average", | |
12351 | be fair, so after a while we'll see events from all | |
12352 | threads that have anything of interest, and no longer | |
12353 | need to keep this breakpoint location around. We | |
12354 | don't hold locations forever so to reduce chances of | |
12355 | mistaking a non-breakpoint SIGTRAP for a breakpoint | |
12356 | SIGTRAP. | |
12357 | ||
12358 | The heuristic failing can be disastrous on | |
12359 | decr_pc_after_break targets. | |
12360 | ||
12361 | On decr_pc_after_break targets, like e.g., x86-linux, | |
12362 | if we fail to recognize a late breakpoint SIGTRAP, | |
12363 | because events_till_retirement has reached 0 too | |
12364 | soon, we'll fail to do the PC adjustment, and report | |
12365 | a random SIGTRAP to the user. When the user resumes | |
12366 | the inferior, it will most likely immediately crash | |
2dec564e | 12367 | with SIGILL/SIGBUS/SIGSEGV, or worse, get silently |
db82e815 PA |
12368 | corrupted, because of being resumed e.g., in the |
12369 | middle of a multi-byte instruction, or skipped a | |
12370 | one-byte instruction. This was actually seen happen | |
12371 | on native x86-linux, and should be less rare on | |
12372 | targets that do not support new thread events, like | |
12373 | remote, due to the heuristic depending on | |
12374 | thread_count. | |
12375 | ||
12376 | Mistaking a random SIGTRAP for a breakpoint trap | |
12377 | causes similar symptoms (PC adjustment applied when | |
12378 | it shouldn't), but then again, playing with SIGTRAPs | |
12379 | behind the debugger's back is asking for trouble. | |
12380 | ||
12381 | Since hardware watchpoint traps are always | |
12382 | distinguishable from other traps, so we don't need to | |
12383 | apply keep hardware watchpoint moribund locations | |
12384 | around. We simply always ignore hardware watchpoint | |
12385 | traps we can no longer explain. */ | |
12386 | ||
876fa593 JK |
12387 | old_loc->events_till_retirement = 3 * (thread_count () + 1); |
12388 | old_loc->owner = NULL; | |
20874c92 | 12389 | |
876fa593 | 12390 | VEC_safe_push (bp_location_p, moribund_locations, old_loc); |
1c5cfe86 PA |
12391 | } |
12392 | else | |
f431efe5 PA |
12393 | { |
12394 | old_loc->owner = NULL; | |
12395 | decref_bp_location (&old_loc); | |
12396 | } | |
20874c92 | 12397 | } |
74960c60 | 12398 | } |
1c5cfe86 | 12399 | |
348d480f PA |
12400 | /* Rescan breakpoints at the same address and section, marking the |
12401 | first one as "first" and any others as "duplicates". This is so | |
12402 | that the bpt instruction is only inserted once. If we have a | |
12403 | permanent breakpoint at the same place as BPT, make that one the | |
12404 | official one, and the rest as duplicates. Permanent breakpoints | |
12405 | are sorted first for the same address. | |
12406 | ||
12407 | Do the same for hardware watchpoints, but also considering the | |
12408 | watchpoint's type (regular/access/read) and length. */ | |
12409 | ||
12410 | bp_loc_first = NULL; | |
12411 | wp_loc_first = NULL; | |
12412 | awp_loc_first = NULL; | |
12413 | rwp_loc_first = NULL; | |
12414 | ALL_BP_LOCATIONS (loc, locp) | |
12415 | { | |
12416 | /* ALL_BP_LOCATIONS bp_location has LOC->OWNER always | |
12417 | non-NULL. */ | |
348d480f | 12418 | struct bp_location **loc_first_p; |
d3fbdd86 | 12419 | b = loc->owner; |
348d480f | 12420 | |
6f380991 | 12421 | if (!unduplicated_should_be_inserted (loc) |
348d480f | 12422 | || !breakpoint_address_is_meaningful (b) |
1e4d1764 YQ |
12423 | /* Don't detect duplicate for tracepoint locations because they are |
12424 | never duplicated. See the comments in field `duplicate' of | |
12425 | `struct bp_location'. */ | |
348d480f | 12426 | || is_tracepoint (b)) |
b775012e LM |
12427 | { |
12428 | /* Clear the condition modification flag. */ | |
12429 | loc->condition_changed = condition_unchanged; | |
12430 | continue; | |
12431 | } | |
348d480f PA |
12432 | |
12433 | /* Permanent breakpoint should always be inserted. */ | |
12434 | if (b->enable_state == bp_permanent && ! loc->inserted) | |
12435 | internal_error (__FILE__, __LINE__, | |
12436 | _("allegedly permanent breakpoint is not " | |
12437 | "actually inserted")); | |
12438 | ||
12439 | if (b->type == bp_hardware_watchpoint) | |
12440 | loc_first_p = &wp_loc_first; | |
12441 | else if (b->type == bp_read_watchpoint) | |
12442 | loc_first_p = &rwp_loc_first; | |
12443 | else if (b->type == bp_access_watchpoint) | |
12444 | loc_first_p = &awp_loc_first; | |
12445 | else | |
12446 | loc_first_p = &bp_loc_first; | |
12447 | ||
12448 | if (*loc_first_p == NULL | |
12449 | || (overlay_debugging && loc->section != (*loc_first_p)->section) | |
12450 | || !breakpoint_locations_match (loc, *loc_first_p)) | |
12451 | { | |
12452 | *loc_first_p = loc; | |
12453 | loc->duplicate = 0; | |
b775012e LM |
12454 | |
12455 | if (is_breakpoint (loc->owner) && loc->condition_changed) | |
12456 | { | |
12457 | loc->needs_update = 1; | |
12458 | /* Clear the condition modification flag. */ | |
12459 | loc->condition_changed = condition_unchanged; | |
12460 | } | |
348d480f PA |
12461 | continue; |
12462 | } | |
12463 | ||
934709f0 PW |
12464 | |
12465 | /* This and the above ensure the invariant that the first location | |
12466 | is not duplicated, and is the inserted one. | |
12467 | All following are marked as duplicated, and are not inserted. */ | |
12468 | if (loc->inserted) | |
12469 | swap_insertion (loc, *loc_first_p); | |
348d480f PA |
12470 | loc->duplicate = 1; |
12471 | ||
b775012e LM |
12472 | /* Clear the condition modification flag. */ |
12473 | loc->condition_changed = condition_unchanged; | |
12474 | ||
348d480f PA |
12475 | if ((*loc_first_p)->owner->enable_state == bp_permanent && loc->inserted |
12476 | && b->enable_state != bp_permanent) | |
12477 | internal_error (__FILE__, __LINE__, | |
12478 | _("another breakpoint was inserted on top of " | |
12479 | "a permanent breakpoint")); | |
12480 | } | |
12481 | ||
b775012e | 12482 | if (breakpoints_always_inserted_mode () |
348d480f | 12483 | && (have_live_inferiors () |
f5656ead | 12484 | || (gdbarch_has_global_breakpoints (target_gdbarch ())))) |
b775012e LM |
12485 | { |
12486 | if (should_insert) | |
12487 | insert_breakpoint_locations (); | |
12488 | else | |
12489 | { | |
12490 | /* Though should_insert is false, we may need to update conditions | |
12491 | on the target's side if it is evaluating such conditions. We | |
12492 | only update conditions for locations that are marked | |
12493 | "needs_update". */ | |
12494 | update_inserted_breakpoint_locations (); | |
12495 | } | |
12496 | } | |
348d480f | 12497 | |
1e4d1764 YQ |
12498 | if (should_insert) |
12499 | download_tracepoint_locations (); | |
12500 | ||
348d480f PA |
12501 | do_cleanups (cleanups); |
12502 | } | |
12503 | ||
12504 | void | |
12505 | breakpoint_retire_moribund (void) | |
12506 | { | |
12507 | struct bp_location *loc; | |
12508 | int ix; | |
12509 | ||
12510 | for (ix = 0; VEC_iterate (bp_location_p, moribund_locations, ix, loc); ++ix) | |
12511 | if (--(loc->events_till_retirement) == 0) | |
12512 | { | |
12513 | decref_bp_location (&loc); | |
12514 | VEC_unordered_remove (bp_location_p, moribund_locations, ix); | |
12515 | --ix; | |
12516 | } | |
12517 | } | |
12518 | ||
12519 | static void | |
12520 | update_global_location_list_nothrow (int inserting) | |
12521 | { | |
bfd189b1 | 12522 | volatile struct gdb_exception e; |
348d480f PA |
12523 | |
12524 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
12525 | update_global_location_list (inserting); | |
12526 | } | |
12527 | ||
12528 | /* Clear BKP from a BPS. */ | |
12529 | ||
12530 | static void | |
12531 | bpstat_remove_bp_location (bpstat bps, struct breakpoint *bpt) | |
12532 | { | |
12533 | bpstat bs; | |
12534 | ||
12535 | for (bs = bps; bs; bs = bs->next) | |
12536 | if (bs->breakpoint_at == bpt) | |
12537 | { | |
12538 | bs->breakpoint_at = NULL; | |
12539 | bs->old_val = NULL; | |
12540 | /* bs->commands will be freed later. */ | |
12541 | } | |
12542 | } | |
12543 | ||
12544 | /* Callback for iterate_over_threads. */ | |
12545 | static int | |
12546 | bpstat_remove_breakpoint_callback (struct thread_info *th, void *data) | |
12547 | { | |
12548 | struct breakpoint *bpt = data; | |
12549 | ||
12550 | bpstat_remove_bp_location (th->control.stop_bpstat, bpt); | |
12551 | return 0; | |
12552 | } | |
12553 | ||
12554 | /* Helper for breakpoint and tracepoint breakpoint_ops->mention | |
12555 | callbacks. */ | |
12556 | ||
12557 | static void | |
12558 | say_where (struct breakpoint *b) | |
12559 | { | |
12560 | struct value_print_options opts; | |
12561 | ||
12562 | get_user_print_options (&opts); | |
12563 | ||
12564 | /* i18n: cagney/2005-02-11: Below needs to be merged into a | |
12565 | single string. */ | |
12566 | if (b->loc == NULL) | |
12567 | { | |
12568 | printf_filtered (_(" (%s) pending."), b->addr_string); | |
12569 | } | |
12570 | else | |
12571 | { | |
2f202fde | 12572 | if (opts.addressprint || b->loc->symtab == NULL) |
348d480f PA |
12573 | { |
12574 | printf_filtered (" at "); | |
12575 | fputs_filtered (paddress (b->loc->gdbarch, b->loc->address), | |
12576 | gdb_stdout); | |
12577 | } | |
2f202fde | 12578 | if (b->loc->symtab != NULL) |
f8eba3c6 TT |
12579 | { |
12580 | /* If there is a single location, we can print the location | |
12581 | more nicely. */ | |
12582 | if (b->loc->next == NULL) | |
12583 | printf_filtered (": file %s, line %d.", | |
05cba821 JK |
12584 | symtab_to_filename_for_display (b->loc->symtab), |
12585 | b->loc->line_number); | |
f8eba3c6 TT |
12586 | else |
12587 | /* This is not ideal, but each location may have a | |
12588 | different file name, and this at least reflects the | |
12589 | real situation somewhat. */ | |
12590 | printf_filtered (": %s.", b->addr_string); | |
12591 | } | |
348d480f PA |
12592 | |
12593 | if (b->loc->next) | |
12594 | { | |
12595 | struct bp_location *loc = b->loc; | |
12596 | int n = 0; | |
12597 | for (; loc; loc = loc->next) | |
12598 | ++n; | |
12599 | printf_filtered (" (%d locations)", n); | |
12600 | } | |
12601 | } | |
12602 | } | |
12603 | ||
348d480f PA |
12604 | /* Default bp_location_ops methods. */ |
12605 | ||
12606 | static void | |
12607 | bp_location_dtor (struct bp_location *self) | |
12608 | { | |
12609 | xfree (self->cond); | |
b775012e LM |
12610 | if (self->cond_bytecode) |
12611 | free_agent_expr (self->cond_bytecode); | |
348d480f PA |
12612 | xfree (self->function_name); |
12613 | } | |
12614 | ||
12615 | static const struct bp_location_ops bp_location_ops = | |
12616 | { | |
12617 | bp_location_dtor | |
12618 | }; | |
12619 | ||
2060206e PA |
12620 | /* Default breakpoint_ops methods all breakpoint_ops ultimately |
12621 | inherit from. */ | |
348d480f | 12622 | |
2060206e PA |
12623 | static void |
12624 | base_breakpoint_dtor (struct breakpoint *self) | |
348d480f PA |
12625 | { |
12626 | decref_counted_command_line (&self->commands); | |
12627 | xfree (self->cond_string); | |
fb81d016 | 12628 | xfree (self->extra_string); |
348d480f | 12629 | xfree (self->addr_string); |
f8eba3c6 | 12630 | xfree (self->filter); |
348d480f | 12631 | xfree (self->addr_string_range_end); |
348d480f PA |
12632 | } |
12633 | ||
2060206e PA |
12634 | static struct bp_location * |
12635 | base_breakpoint_allocate_location (struct breakpoint *self) | |
348d480f PA |
12636 | { |
12637 | struct bp_location *loc; | |
12638 | ||
12639 | loc = XNEW (struct bp_location); | |
12640 | init_bp_location (loc, &bp_location_ops, self); | |
12641 | return loc; | |
12642 | } | |
12643 | ||
2060206e PA |
12644 | static void |
12645 | base_breakpoint_re_set (struct breakpoint *b) | |
12646 | { | |
12647 | /* Nothing to re-set. */ | |
12648 | } | |
12649 | ||
12650 | #define internal_error_pure_virtual_called() \ | |
12651 | gdb_assert_not_reached ("pure virtual function called") | |
12652 | ||
12653 | static int | |
12654 | base_breakpoint_insert_location (struct bp_location *bl) | |
12655 | { | |
12656 | internal_error_pure_virtual_called (); | |
12657 | } | |
12658 | ||
12659 | static int | |
12660 | base_breakpoint_remove_location (struct bp_location *bl) | |
12661 | { | |
12662 | internal_error_pure_virtual_called (); | |
12663 | } | |
12664 | ||
12665 | static int | |
12666 | base_breakpoint_breakpoint_hit (const struct bp_location *bl, | |
12667 | struct address_space *aspace, | |
09ac7c10 TT |
12668 | CORE_ADDR bp_addr, |
12669 | const struct target_waitstatus *ws) | |
2060206e PA |
12670 | { |
12671 | internal_error_pure_virtual_called (); | |
12672 | } | |
12673 | ||
12674 | static void | |
12675 | base_breakpoint_check_status (bpstat bs) | |
12676 | { | |
12677 | /* Always stop. */ | |
12678 | } | |
12679 | ||
12680 | /* A "works_in_software_mode" breakpoint_ops method that just internal | |
12681 | errors. */ | |
12682 | ||
12683 | static int | |
12684 | base_breakpoint_works_in_software_mode (const struct breakpoint *b) | |
12685 | { | |
12686 | internal_error_pure_virtual_called (); | |
12687 | } | |
12688 | ||
12689 | /* A "resources_needed" breakpoint_ops method that just internal | |
12690 | errors. */ | |
12691 | ||
12692 | static int | |
12693 | base_breakpoint_resources_needed (const struct bp_location *bl) | |
12694 | { | |
12695 | internal_error_pure_virtual_called (); | |
12696 | } | |
12697 | ||
12698 | static enum print_stop_action | |
12699 | base_breakpoint_print_it (bpstat bs) | |
12700 | { | |
12701 | internal_error_pure_virtual_called (); | |
12702 | } | |
12703 | ||
12704 | static void | |
12705 | base_breakpoint_print_one_detail (const struct breakpoint *self, | |
12706 | struct ui_out *uiout) | |
12707 | { | |
12708 | /* nothing */ | |
12709 | } | |
12710 | ||
12711 | static void | |
12712 | base_breakpoint_print_mention (struct breakpoint *b) | |
12713 | { | |
12714 | internal_error_pure_virtual_called (); | |
12715 | } | |
12716 | ||
12717 | static void | |
12718 | base_breakpoint_print_recreate (struct breakpoint *b, struct ui_file *fp) | |
12719 | { | |
12720 | internal_error_pure_virtual_called (); | |
12721 | } | |
12722 | ||
983af33b SDJ |
12723 | static void |
12724 | base_breakpoint_create_sals_from_address (char **arg, | |
12725 | struct linespec_result *canonical, | |
12726 | enum bptype type_wanted, | |
12727 | char *addr_start, | |
12728 | char **copy_arg) | |
12729 | { | |
12730 | internal_error_pure_virtual_called (); | |
12731 | } | |
12732 | ||
12733 | static void | |
12734 | base_breakpoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12735 | struct linespec_result *c, | |
12736 | struct linespec_sals *lsal, | |
12737 | char *cond_string, | |
e7e0cddf | 12738 | char *extra_string, |
983af33b SDJ |
12739 | enum bptype type_wanted, |
12740 | enum bpdisp disposition, | |
12741 | int thread, | |
12742 | int task, int ignore_count, | |
12743 | const struct breakpoint_ops *o, | |
12744 | int from_tty, int enabled, | |
44f238bb | 12745 | int internal, unsigned flags) |
983af33b SDJ |
12746 | { |
12747 | internal_error_pure_virtual_called (); | |
12748 | } | |
12749 | ||
12750 | static void | |
12751 | base_breakpoint_decode_linespec (struct breakpoint *b, char **s, | |
12752 | struct symtabs_and_lines *sals) | |
12753 | { | |
12754 | internal_error_pure_virtual_called (); | |
12755 | } | |
12756 | ||
ab04a2af TT |
12757 | /* The default 'explains_signal' method. */ |
12758 | ||
12759 | static enum bpstat_signal_value | |
427cd150 | 12760 | base_breakpoint_explains_signal (struct breakpoint *b, enum gdb_signal sig) |
ab04a2af TT |
12761 | { |
12762 | return BPSTAT_SIGNAL_HIDE; | |
12763 | } | |
12764 | ||
12765 | struct breakpoint_ops base_breakpoint_ops = | |
2060206e PA |
12766 | { |
12767 | base_breakpoint_dtor, | |
12768 | base_breakpoint_allocate_location, | |
12769 | base_breakpoint_re_set, | |
12770 | base_breakpoint_insert_location, | |
12771 | base_breakpoint_remove_location, | |
12772 | base_breakpoint_breakpoint_hit, | |
12773 | base_breakpoint_check_status, | |
12774 | base_breakpoint_resources_needed, | |
12775 | base_breakpoint_works_in_software_mode, | |
12776 | base_breakpoint_print_it, | |
12777 | NULL, | |
12778 | base_breakpoint_print_one_detail, | |
12779 | base_breakpoint_print_mention, | |
983af33b SDJ |
12780 | base_breakpoint_print_recreate, |
12781 | base_breakpoint_create_sals_from_address, | |
12782 | base_breakpoint_create_breakpoints_sal, | |
12783 | base_breakpoint_decode_linespec, | |
ab04a2af | 12784 | base_breakpoint_explains_signal |
2060206e PA |
12785 | }; |
12786 | ||
12787 | /* Default breakpoint_ops methods. */ | |
12788 | ||
12789 | static void | |
348d480f PA |
12790 | bkpt_re_set (struct breakpoint *b) |
12791 | { | |
06edf0c0 PA |
12792 | /* FIXME: is this still reachable? */ |
12793 | if (b->addr_string == NULL) | |
12794 | { | |
12795 | /* Anything without a string can't be re-set. */ | |
348d480f | 12796 | delete_breakpoint (b); |
06edf0c0 | 12797 | return; |
348d480f | 12798 | } |
06edf0c0 PA |
12799 | |
12800 | breakpoint_re_set_default (b); | |
348d480f PA |
12801 | } |
12802 | ||
2060206e | 12803 | static int |
348d480f PA |
12804 | bkpt_insert_location (struct bp_location *bl) |
12805 | { | |
12806 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12807 | return target_insert_hw_breakpoint (bl->gdbarch, | |
12808 | &bl->target_info); | |
12809 | else | |
12810 | return target_insert_breakpoint (bl->gdbarch, | |
12811 | &bl->target_info); | |
12812 | } | |
12813 | ||
2060206e | 12814 | static int |
348d480f PA |
12815 | bkpt_remove_location (struct bp_location *bl) |
12816 | { | |
12817 | if (bl->loc_type == bp_loc_hardware_breakpoint) | |
12818 | return target_remove_hw_breakpoint (bl->gdbarch, &bl->target_info); | |
12819 | else | |
12820 | return target_remove_breakpoint (bl->gdbarch, &bl->target_info); | |
12821 | } | |
12822 | ||
2060206e | 12823 | static int |
348d480f | 12824 | bkpt_breakpoint_hit (const struct bp_location *bl, |
09ac7c10 TT |
12825 | struct address_space *aspace, CORE_ADDR bp_addr, |
12826 | const struct target_waitstatus *ws) | |
348d480f | 12827 | { |
09ac7c10 | 12828 | if (ws->kind != TARGET_WAITKIND_STOPPED |
a493e3e2 | 12829 | || ws->value.sig != GDB_SIGNAL_TRAP) |
09ac7c10 TT |
12830 | return 0; |
12831 | ||
348d480f PA |
12832 | if (!breakpoint_address_match (bl->pspace->aspace, bl->address, |
12833 | aspace, bp_addr)) | |
12834 | return 0; | |
12835 | ||
12836 | if (overlay_debugging /* unmapped overlay section */ | |
12837 | && section_is_overlay (bl->section) | |
12838 | && !section_is_mapped (bl->section)) | |
12839 | return 0; | |
12840 | ||
12841 | return 1; | |
12842 | } | |
12843 | ||
2060206e | 12844 | static int |
348d480f PA |
12845 | bkpt_resources_needed (const struct bp_location *bl) |
12846 | { | |
12847 | gdb_assert (bl->owner->type == bp_hardware_breakpoint); | |
12848 | ||
12849 | return 1; | |
12850 | } | |
12851 | ||
2060206e | 12852 | static enum print_stop_action |
348d480f PA |
12853 | bkpt_print_it (bpstat bs) |
12854 | { | |
348d480f PA |
12855 | struct breakpoint *b; |
12856 | const struct bp_location *bl; | |
001c8c33 | 12857 | int bp_temp; |
79a45e25 | 12858 | struct ui_out *uiout = current_uiout; |
348d480f PA |
12859 | |
12860 | gdb_assert (bs->bp_location_at != NULL); | |
12861 | ||
12862 | bl = bs->bp_location_at; | |
12863 | b = bs->breakpoint_at; | |
12864 | ||
001c8c33 PA |
12865 | bp_temp = b->disposition == disp_del; |
12866 | if (bl->address != bl->requested_address) | |
12867 | breakpoint_adjustment_warning (bl->requested_address, | |
12868 | bl->address, | |
12869 | b->number, 1); | |
12870 | annotate_breakpoint (b->number); | |
12871 | if (bp_temp) | |
12872 | ui_out_text (uiout, "\nTemporary breakpoint "); | |
12873 | else | |
12874 | ui_out_text (uiout, "\nBreakpoint "); | |
12875 | if (ui_out_is_mi_like_p (uiout)) | |
348d480f | 12876 | { |
001c8c33 PA |
12877 | ui_out_field_string (uiout, "reason", |
12878 | async_reason_lookup (EXEC_ASYNC_BREAKPOINT_HIT)); | |
12879 | ui_out_field_string (uiout, "disp", bpdisp_text (b->disposition)); | |
06edf0c0 | 12880 | } |
001c8c33 PA |
12881 | ui_out_field_int (uiout, "bkptno", b->number); |
12882 | ui_out_text (uiout, ", "); | |
06edf0c0 | 12883 | |
001c8c33 | 12884 | return PRINT_SRC_AND_LOC; |
06edf0c0 PA |
12885 | } |
12886 | ||
2060206e | 12887 | static void |
06edf0c0 PA |
12888 | bkpt_print_mention (struct breakpoint *b) |
12889 | { | |
79a45e25 | 12890 | if (ui_out_is_mi_like_p (current_uiout)) |
06edf0c0 PA |
12891 | return; |
12892 | ||
12893 | switch (b->type) | |
12894 | { | |
12895 | case bp_breakpoint: | |
12896 | case bp_gnu_ifunc_resolver: | |
12897 | if (b->disposition == disp_del) | |
12898 | printf_filtered (_("Temporary breakpoint")); | |
12899 | else | |
12900 | printf_filtered (_("Breakpoint")); | |
12901 | printf_filtered (_(" %d"), b->number); | |
12902 | if (b->type == bp_gnu_ifunc_resolver) | |
12903 | printf_filtered (_(" at gnu-indirect-function resolver")); | |
12904 | break; | |
12905 | case bp_hardware_breakpoint: | |
12906 | printf_filtered (_("Hardware assisted breakpoint %d"), b->number); | |
12907 | break; | |
e7e0cddf SS |
12908 | case bp_dprintf: |
12909 | printf_filtered (_("Dprintf %d"), b->number); | |
12910 | break; | |
06edf0c0 PA |
12911 | } |
12912 | ||
12913 | say_where (b); | |
12914 | } | |
12915 | ||
2060206e | 12916 | static void |
06edf0c0 PA |
12917 | bkpt_print_recreate (struct breakpoint *tp, struct ui_file *fp) |
12918 | { | |
12919 | if (tp->type == bp_breakpoint && tp->disposition == disp_del) | |
12920 | fprintf_unfiltered (fp, "tbreak"); | |
12921 | else if (tp->type == bp_breakpoint) | |
12922 | fprintf_unfiltered (fp, "break"); | |
12923 | else if (tp->type == bp_hardware_breakpoint | |
12924 | && tp->disposition == disp_del) | |
12925 | fprintf_unfiltered (fp, "thbreak"); | |
12926 | else if (tp->type == bp_hardware_breakpoint) | |
12927 | fprintf_unfiltered (fp, "hbreak"); | |
12928 | else | |
12929 | internal_error (__FILE__, __LINE__, | |
12930 | _("unhandled breakpoint type %d"), (int) tp->type); | |
12931 | ||
2060206e | 12932 | fprintf_unfiltered (fp, " %s", tp->addr_string); |
dd11a36c | 12933 | print_recreate_thread (tp, fp); |
06edf0c0 PA |
12934 | } |
12935 | ||
983af33b SDJ |
12936 | static void |
12937 | bkpt_create_sals_from_address (char **arg, | |
12938 | struct linespec_result *canonical, | |
12939 | enum bptype type_wanted, | |
12940 | char *addr_start, char **copy_arg) | |
12941 | { | |
12942 | create_sals_from_address_default (arg, canonical, type_wanted, | |
12943 | addr_start, copy_arg); | |
12944 | } | |
12945 | ||
12946 | static void | |
12947 | bkpt_create_breakpoints_sal (struct gdbarch *gdbarch, | |
12948 | struct linespec_result *canonical, | |
12949 | struct linespec_sals *lsal, | |
12950 | char *cond_string, | |
e7e0cddf | 12951 | char *extra_string, |
983af33b SDJ |
12952 | enum bptype type_wanted, |
12953 | enum bpdisp disposition, | |
12954 | int thread, | |
12955 | int task, int ignore_count, | |
12956 | const struct breakpoint_ops *ops, | |
12957 | int from_tty, int enabled, | |
44f238bb | 12958 | int internal, unsigned flags) |
983af33b SDJ |
12959 | { |
12960 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
12961 | cond_string, extra_string, |
12962 | type_wanted, | |
983af33b SDJ |
12963 | disposition, thread, task, |
12964 | ignore_count, ops, from_tty, | |
44f238bb | 12965 | enabled, internal, flags); |
983af33b SDJ |
12966 | } |
12967 | ||
12968 | static void | |
12969 | bkpt_decode_linespec (struct breakpoint *b, char **s, | |
12970 | struct symtabs_and_lines *sals) | |
12971 | { | |
12972 | decode_linespec_default (b, s, sals); | |
12973 | } | |
12974 | ||
06edf0c0 PA |
12975 | /* Virtual table for internal breakpoints. */ |
12976 | ||
12977 | static void | |
12978 | internal_bkpt_re_set (struct breakpoint *b) | |
12979 | { | |
12980 | switch (b->type) | |
12981 | { | |
12982 | /* Delete overlay event and longjmp master breakpoints; they | |
12983 | will be reset later by breakpoint_re_set. */ | |
12984 | case bp_overlay_event: | |
12985 | case bp_longjmp_master: | |
12986 | case bp_std_terminate_master: | |
12987 | case bp_exception_master: | |
12988 | delete_breakpoint (b); | |
12989 | break; | |
12990 | ||
12991 | /* This breakpoint is special, it's set up when the inferior | |
12992 | starts and we really don't want to touch it. */ | |
12993 | case bp_shlib_event: | |
12994 | ||
12995 | /* Like bp_shlib_event, this breakpoint type is special. Once | |
12996 | it is set up, we do not want to touch it. */ | |
12997 | case bp_thread_event: | |
12998 | break; | |
12999 | } | |
13000 | } | |
13001 | ||
13002 | static void | |
13003 | internal_bkpt_check_status (bpstat bs) | |
13004 | { | |
a9b3a50f PA |
13005 | if (bs->breakpoint_at->type == bp_shlib_event) |
13006 | { | |
13007 | /* If requested, stop when the dynamic linker notifies GDB of | |
13008 | events. This allows the user to get control and place | |
13009 | breakpoints in initializer routines for dynamically loaded | |
13010 | objects (among other things). */ | |
13011 | bs->stop = stop_on_solib_events; | |
13012 | bs->print = stop_on_solib_events; | |
13013 | } | |
13014 | else | |
13015 | bs->stop = 0; | |
06edf0c0 PA |
13016 | } |
13017 | ||
13018 | static enum print_stop_action | |
13019 | internal_bkpt_print_it (bpstat bs) | |
13020 | { | |
06edf0c0 | 13021 | struct breakpoint *b; |
06edf0c0 | 13022 | |
06edf0c0 PA |
13023 | b = bs->breakpoint_at; |
13024 | ||
06edf0c0 PA |
13025 | switch (b->type) |
13026 | { | |
348d480f PA |
13027 | case bp_shlib_event: |
13028 | /* Did we stop because the user set the stop_on_solib_events | |
13029 | variable? (If so, we report this as a generic, "Stopped due | |
13030 | to shlib event" message.) */ | |
edcc5120 | 13031 | print_solib_event (0); |
348d480f PA |
13032 | break; |
13033 | ||
13034 | case bp_thread_event: | |
13035 | /* Not sure how we will get here. | |
13036 | GDB should not stop for these breakpoints. */ | |
13037 | printf_filtered (_("Thread Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13038 | break; |
13039 | ||
13040 | case bp_overlay_event: | |
13041 | /* By analogy with the thread event, GDB should not stop for these. */ | |
13042 | printf_filtered (_("Overlay Event Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13043 | break; |
13044 | ||
13045 | case bp_longjmp_master: | |
13046 | /* These should never be enabled. */ | |
13047 | printf_filtered (_("Longjmp Master Breakpoint: gdb should not stop!\n")); | |
348d480f PA |
13048 | break; |
13049 | ||
13050 | case bp_std_terminate_master: | |
13051 | /* These should never be enabled. */ | |
13052 | printf_filtered (_("std::terminate Master Breakpoint: " | |
13053 | "gdb should not stop!\n")); | |
348d480f PA |
13054 | break; |
13055 | ||
13056 | case bp_exception_master: | |
13057 | /* These should never be enabled. */ | |
13058 | printf_filtered (_("Exception Master Breakpoint: " | |
13059 | "gdb should not stop!\n")); | |
06edf0c0 PA |
13060 | break; |
13061 | } | |
13062 | ||
001c8c33 | 13063 | return PRINT_NOTHING; |
06edf0c0 PA |
13064 | } |
13065 | ||
13066 | static void | |
13067 | internal_bkpt_print_mention (struct breakpoint *b) | |
13068 | { | |
13069 | /* Nothing to mention. These breakpoints are internal. */ | |
13070 | } | |
13071 | ||
06edf0c0 PA |
13072 | /* Virtual table for momentary breakpoints */ |
13073 | ||
13074 | static void | |
13075 | momentary_bkpt_re_set (struct breakpoint *b) | |
13076 | { | |
13077 | /* Keep temporary breakpoints, which can be encountered when we step | |
4d1eb6b4 | 13078 | over a dlopen call and solib_add is resetting the breakpoints. |
06edf0c0 PA |
13079 | Otherwise these should have been blown away via the cleanup chain |
13080 | or by breakpoint_init_inferior when we rerun the executable. */ | |
13081 | } | |
13082 | ||
13083 | static void | |
13084 | momentary_bkpt_check_status (bpstat bs) | |
13085 | { | |
13086 | /* Nothing. The point of these breakpoints is causing a stop. */ | |
13087 | } | |
13088 | ||
13089 | static enum print_stop_action | |
13090 | momentary_bkpt_print_it (bpstat bs) | |
13091 | { | |
79a45e25 PA |
13092 | struct ui_out *uiout = current_uiout; |
13093 | ||
001c8c33 | 13094 | if (ui_out_is_mi_like_p (uiout)) |
06edf0c0 | 13095 | { |
001c8c33 | 13096 | struct breakpoint *b = bs->breakpoint_at; |
348d480f | 13097 | |
001c8c33 PA |
13098 | switch (b->type) |
13099 | { | |
13100 | case bp_finish: | |
13101 | ui_out_field_string | |
13102 | (uiout, "reason", | |
13103 | async_reason_lookup (EXEC_ASYNC_FUNCTION_FINISHED)); | |
13104 | break; | |
348d480f | 13105 | |
001c8c33 PA |
13106 | case bp_until: |
13107 | ui_out_field_string | |
13108 | (uiout, "reason", | |
13109 | async_reason_lookup (EXEC_ASYNC_LOCATION_REACHED)); | |
13110 | break; | |
13111 | } | |
348d480f PA |
13112 | } |
13113 | ||
001c8c33 | 13114 | return PRINT_UNKNOWN; |
348d480f PA |
13115 | } |
13116 | ||
06edf0c0 PA |
13117 | static void |
13118 | momentary_bkpt_print_mention (struct breakpoint *b) | |
348d480f | 13119 | { |
06edf0c0 | 13120 | /* Nothing to mention. These breakpoints are internal. */ |
348d480f PA |
13121 | } |
13122 | ||
e2e4d78b JK |
13123 | /* Ensure INITIATING_FRAME is cleared when no such breakpoint exists. |
13124 | ||
13125 | It gets cleared already on the removal of the first one of such placed | |
13126 | breakpoints. This is OK as they get all removed altogether. */ | |
13127 | ||
13128 | static void | |
13129 | longjmp_bkpt_dtor (struct breakpoint *self) | |
13130 | { | |
13131 | struct thread_info *tp = find_thread_id (self->thread); | |
13132 | ||
13133 | if (tp) | |
13134 | tp->initiating_frame = null_frame_id; | |
13135 | ||
13136 | momentary_breakpoint_ops.dtor (self); | |
13137 | } | |
13138 | ||
55aa24fb SDJ |
13139 | /* Specific methods for probe breakpoints. */ |
13140 | ||
13141 | static int | |
13142 | bkpt_probe_insert_location (struct bp_location *bl) | |
13143 | { | |
13144 | int v = bkpt_insert_location (bl); | |
13145 | ||
13146 | if (v == 0) | |
13147 | { | |
13148 | /* The insertion was successful, now let's set the probe's semaphore | |
13149 | if needed. */ | |
13150 | bl->probe->pops->set_semaphore (bl->probe, bl->gdbarch); | |
13151 | } | |
13152 | ||
13153 | return v; | |
13154 | } | |
13155 | ||
13156 | static int | |
13157 | bkpt_probe_remove_location (struct bp_location *bl) | |
13158 | { | |
13159 | /* Let's clear the semaphore before removing the location. */ | |
13160 | bl->probe->pops->clear_semaphore (bl->probe, bl->gdbarch); | |
13161 | ||
13162 | return bkpt_remove_location (bl); | |
13163 | } | |
13164 | ||
13165 | static void | |
13166 | bkpt_probe_create_sals_from_address (char **arg, | |
13167 | struct linespec_result *canonical, | |
13168 | enum bptype type_wanted, | |
13169 | char *addr_start, char **copy_arg) | |
13170 | { | |
13171 | struct linespec_sals lsal; | |
13172 | ||
13173 | lsal.sals = parse_probes (arg, canonical); | |
13174 | ||
13175 | *copy_arg = xstrdup (canonical->addr_string); | |
13176 | lsal.canonical = xstrdup (*copy_arg); | |
13177 | ||
13178 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13179 | } | |
13180 | ||
13181 | static void | |
13182 | bkpt_probe_decode_linespec (struct breakpoint *b, char **s, | |
13183 | struct symtabs_and_lines *sals) | |
13184 | { | |
13185 | *sals = parse_probes (s, NULL); | |
13186 | if (!sals->sals) | |
13187 | error (_("probe not found")); | |
13188 | } | |
13189 | ||
348d480f | 13190 | /* The breakpoint_ops structure to be used in tracepoints. */ |
876fa593 | 13191 | |
348d480f PA |
13192 | static void |
13193 | tracepoint_re_set (struct breakpoint *b) | |
13194 | { | |
13195 | breakpoint_re_set_default (b); | |
13196 | } | |
876fa593 | 13197 | |
348d480f PA |
13198 | static int |
13199 | tracepoint_breakpoint_hit (const struct bp_location *bl, | |
09ac7c10 TT |
13200 | struct address_space *aspace, CORE_ADDR bp_addr, |
13201 | const struct target_waitstatus *ws) | |
348d480f PA |
13202 | { |
13203 | /* By definition, the inferior does not report stops at | |
13204 | tracepoints. */ | |
13205 | return 0; | |
74960c60 VP |
13206 | } |
13207 | ||
13208 | static void | |
348d480f PA |
13209 | tracepoint_print_one_detail (const struct breakpoint *self, |
13210 | struct ui_out *uiout) | |
74960c60 | 13211 | { |
d9b3f62e PA |
13212 | struct tracepoint *tp = (struct tracepoint *) self; |
13213 | if (tp->static_trace_marker_id) | |
348d480f PA |
13214 | { |
13215 | gdb_assert (self->type == bp_static_tracepoint); | |
cc59ec59 | 13216 | |
348d480f PA |
13217 | ui_out_text (uiout, "\tmarker id is "); |
13218 | ui_out_field_string (uiout, "static-tracepoint-marker-string-id", | |
d9b3f62e | 13219 | tp->static_trace_marker_id); |
348d480f PA |
13220 | ui_out_text (uiout, "\n"); |
13221 | } | |
0d381245 VP |
13222 | } |
13223 | ||
a474d7c2 | 13224 | static void |
348d480f | 13225 | tracepoint_print_mention (struct breakpoint *b) |
a474d7c2 | 13226 | { |
79a45e25 | 13227 | if (ui_out_is_mi_like_p (current_uiout)) |
348d480f | 13228 | return; |
cc59ec59 | 13229 | |
348d480f PA |
13230 | switch (b->type) |
13231 | { | |
13232 | case bp_tracepoint: | |
13233 | printf_filtered (_("Tracepoint")); | |
13234 | printf_filtered (_(" %d"), b->number); | |
13235 | break; | |
13236 | case bp_fast_tracepoint: | |
13237 | printf_filtered (_("Fast tracepoint")); | |
13238 | printf_filtered (_(" %d"), b->number); | |
13239 | break; | |
13240 | case bp_static_tracepoint: | |
13241 | printf_filtered (_("Static tracepoint")); | |
13242 | printf_filtered (_(" %d"), b->number); | |
13243 | break; | |
13244 | default: | |
13245 | internal_error (__FILE__, __LINE__, | |
13246 | _("unhandled tracepoint type %d"), (int) b->type); | |
13247 | } | |
13248 | ||
13249 | say_where (b); | |
a474d7c2 PA |
13250 | } |
13251 | ||
348d480f | 13252 | static void |
d9b3f62e | 13253 | tracepoint_print_recreate (struct breakpoint *self, struct ui_file *fp) |
a474d7c2 | 13254 | { |
d9b3f62e PA |
13255 | struct tracepoint *tp = (struct tracepoint *) self; |
13256 | ||
13257 | if (self->type == bp_fast_tracepoint) | |
348d480f | 13258 | fprintf_unfiltered (fp, "ftrace"); |
d9b3f62e | 13259 | if (self->type == bp_static_tracepoint) |
348d480f | 13260 | fprintf_unfiltered (fp, "strace"); |
d9b3f62e | 13261 | else if (self->type == bp_tracepoint) |
348d480f PA |
13262 | fprintf_unfiltered (fp, "trace"); |
13263 | else | |
13264 | internal_error (__FILE__, __LINE__, | |
d9b3f62e | 13265 | _("unhandled tracepoint type %d"), (int) self->type); |
cc59ec59 | 13266 | |
d9b3f62e PA |
13267 | fprintf_unfiltered (fp, " %s", self->addr_string); |
13268 | print_recreate_thread (self, fp); | |
13269 | ||
13270 | if (tp->pass_count) | |
13271 | fprintf_unfiltered (fp, " passcount %d\n", tp->pass_count); | |
a474d7c2 PA |
13272 | } |
13273 | ||
983af33b SDJ |
13274 | static void |
13275 | tracepoint_create_sals_from_address (char **arg, | |
13276 | struct linespec_result *canonical, | |
13277 | enum bptype type_wanted, | |
13278 | char *addr_start, char **copy_arg) | |
13279 | { | |
13280 | create_sals_from_address_default (arg, canonical, type_wanted, | |
13281 | addr_start, copy_arg); | |
13282 | } | |
13283 | ||
13284 | static void | |
13285 | tracepoint_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13286 | struct linespec_result *canonical, | |
13287 | struct linespec_sals *lsal, | |
13288 | char *cond_string, | |
e7e0cddf | 13289 | char *extra_string, |
983af33b SDJ |
13290 | enum bptype type_wanted, |
13291 | enum bpdisp disposition, | |
13292 | int thread, | |
13293 | int task, int ignore_count, | |
13294 | const struct breakpoint_ops *ops, | |
13295 | int from_tty, int enabled, | |
44f238bb | 13296 | int internal, unsigned flags) |
983af33b SDJ |
13297 | { |
13298 | create_breakpoints_sal_default (gdbarch, canonical, lsal, | |
e7e0cddf SS |
13299 | cond_string, extra_string, |
13300 | type_wanted, | |
983af33b SDJ |
13301 | disposition, thread, task, |
13302 | ignore_count, ops, from_tty, | |
44f238bb | 13303 | enabled, internal, flags); |
983af33b SDJ |
13304 | } |
13305 | ||
13306 | static void | |
13307 | tracepoint_decode_linespec (struct breakpoint *b, char **s, | |
13308 | struct symtabs_and_lines *sals) | |
13309 | { | |
13310 | decode_linespec_default (b, s, sals); | |
13311 | } | |
13312 | ||
2060206e | 13313 | struct breakpoint_ops tracepoint_breakpoint_ops; |
348d480f | 13314 | |
55aa24fb SDJ |
13315 | /* The breakpoint_ops structure to be use on tracepoints placed in a |
13316 | static probe. */ | |
13317 | ||
13318 | static void | |
13319 | tracepoint_probe_create_sals_from_address (char **arg, | |
13320 | struct linespec_result *canonical, | |
13321 | enum bptype type_wanted, | |
13322 | char *addr_start, char **copy_arg) | |
13323 | { | |
13324 | /* We use the same method for breakpoint on probes. */ | |
13325 | bkpt_probe_create_sals_from_address (arg, canonical, type_wanted, | |
13326 | addr_start, copy_arg); | |
13327 | } | |
13328 | ||
13329 | static void | |
13330 | tracepoint_probe_decode_linespec (struct breakpoint *b, char **s, | |
13331 | struct symtabs_and_lines *sals) | |
13332 | { | |
13333 | /* We use the same method for breakpoint on probes. */ | |
13334 | bkpt_probe_decode_linespec (b, s, sals); | |
13335 | } | |
13336 | ||
13337 | static struct breakpoint_ops tracepoint_probe_breakpoint_ops; | |
13338 | ||
5c2b4418 HZ |
13339 | /* Dprintf breakpoint_ops methods. */ |
13340 | ||
13341 | static void | |
13342 | dprintf_re_set (struct breakpoint *b) | |
13343 | { | |
13344 | breakpoint_re_set_default (b); | |
13345 | ||
13346 | /* This breakpoint could have been pending, and be resolved now, and | |
13347 | if so, we should now have the extra string. If we don't, the | |
13348 | dprintf was malformed when created, but we couldn't tell because | |
13349 | we can't extract the extra string until the location is | |
13350 | resolved. */ | |
13351 | if (b->loc != NULL && b->extra_string == NULL) | |
13352 | error (_("Format string required")); | |
13353 | ||
13354 | /* 1 - connect to target 1, that can run breakpoint commands. | |
13355 | 2 - create a dprintf, which resolves fine. | |
13356 | 3 - disconnect from target 1 | |
13357 | 4 - connect to target 2, that can NOT run breakpoint commands. | |
13358 | ||
13359 | After steps #3/#4, you'll want the dprintf command list to | |
13360 | be updated, because target 1 and 2 may well return different | |
13361 | answers for target_can_run_breakpoint_commands(). | |
13362 | Given absence of finer grained resetting, we get to do | |
13363 | it all the time. */ | |
13364 | if (b->extra_string != NULL) | |
13365 | update_dprintf_command_list (b); | |
13366 | } | |
13367 | ||
2d9442cc HZ |
13368 | /* Implement the "print_recreate" breakpoint_ops method for dprintf. */ |
13369 | ||
13370 | static void | |
13371 | dprintf_print_recreate (struct breakpoint *tp, struct ui_file *fp) | |
13372 | { | |
13373 | fprintf_unfiltered (fp, "dprintf %s%s", tp->addr_string, | |
13374 | tp->extra_string); | |
13375 | print_recreate_thread (tp, fp); | |
13376 | } | |
13377 | ||
983af33b SDJ |
13378 | /* The breakpoint_ops structure to be used on static tracepoints with |
13379 | markers (`-m'). */ | |
13380 | ||
13381 | static void | |
13382 | strace_marker_create_sals_from_address (char **arg, | |
13383 | struct linespec_result *canonical, | |
13384 | enum bptype type_wanted, | |
13385 | char *addr_start, char **copy_arg) | |
13386 | { | |
13387 | struct linespec_sals lsal; | |
13388 | ||
13389 | lsal.sals = decode_static_tracepoint_spec (arg); | |
13390 | ||
13391 | *copy_arg = savestring (addr_start, *arg - addr_start); | |
13392 | ||
13393 | canonical->addr_string = xstrdup (*copy_arg); | |
13394 | lsal.canonical = xstrdup (*copy_arg); | |
13395 | VEC_safe_push (linespec_sals, canonical->sals, &lsal); | |
13396 | } | |
13397 | ||
13398 | static void | |
13399 | strace_marker_create_breakpoints_sal (struct gdbarch *gdbarch, | |
13400 | struct linespec_result *canonical, | |
13401 | struct linespec_sals *lsal, | |
13402 | char *cond_string, | |
e7e0cddf | 13403 | char *extra_string, |
983af33b SDJ |
13404 | enum bptype type_wanted, |
13405 | enum bpdisp disposition, | |
13406 | int thread, | |
13407 | int task, int ignore_count, | |
13408 | const struct breakpoint_ops *ops, | |
13409 | int from_tty, int enabled, | |
44f238bb | 13410 | int internal, unsigned flags) |
983af33b SDJ |
13411 | { |
13412 | int i; | |
13413 | ||
13414 | /* If the user is creating a static tracepoint by marker id | |
13415 | (strace -m MARKER_ID), then store the sals index, so that | |
13416 | breakpoint_re_set can try to match up which of the newly | |
13417 | found markers corresponds to this one, and, don't try to | |
13418 | expand multiple locations for each sal, given than SALS | |
13419 | already should contain all sals for MARKER_ID. */ | |
13420 | ||
13421 | for (i = 0; i < lsal->sals.nelts; ++i) | |
13422 | { | |
13423 | struct symtabs_and_lines expanded; | |
13424 | struct tracepoint *tp; | |
13425 | struct cleanup *old_chain; | |
13426 | char *addr_string; | |
13427 | ||
13428 | expanded.nelts = 1; | |
13429 | expanded.sals = &lsal->sals.sals[i]; | |
13430 | ||
13431 | addr_string = xstrdup (canonical->addr_string); | |
13432 | old_chain = make_cleanup (xfree, addr_string); | |
13433 | ||
13434 | tp = XCNEW (struct tracepoint); | |
13435 | init_breakpoint_sal (&tp->base, gdbarch, expanded, | |
13436 | addr_string, NULL, | |
e7e0cddf SS |
13437 | cond_string, extra_string, |
13438 | type_wanted, disposition, | |
983af33b | 13439 | thread, task, ignore_count, ops, |
44f238bb | 13440 | from_tty, enabled, internal, flags, |
983af33b SDJ |
13441 | canonical->special_display); |
13442 | /* Given that its possible to have multiple markers with | |
13443 | the same string id, if the user is creating a static | |
13444 | tracepoint by marker id ("strace -m MARKER_ID"), then | |
13445 | store the sals index, so that breakpoint_re_set can | |
13446 | try to match up which of the newly found markers | |
13447 | corresponds to this one */ | |
13448 | tp->static_trace_marker_id_idx = i; | |
13449 | ||
13450 | install_breakpoint (internal, &tp->base, 0); | |
13451 | ||
13452 | discard_cleanups (old_chain); | |
13453 | } | |
13454 | } | |
13455 | ||
13456 | static void | |
13457 | strace_marker_decode_linespec (struct breakpoint *b, char **s, | |
13458 | struct symtabs_and_lines *sals) | |
13459 | { | |
13460 | struct tracepoint *tp = (struct tracepoint *) b; | |
13461 | ||
13462 | *sals = decode_static_tracepoint_spec (s); | |
13463 | if (sals->nelts > tp->static_trace_marker_id_idx) | |
13464 | { | |
13465 | sals->sals[0] = sals->sals[tp->static_trace_marker_id_idx]; | |
13466 | sals->nelts = 1; | |
13467 | } | |
13468 | else | |
13469 | error (_("marker %s not found"), tp->static_trace_marker_id); | |
13470 | } | |
13471 | ||
13472 | static struct breakpoint_ops strace_marker_breakpoint_ops; | |
13473 | ||
13474 | static int | |
13475 | strace_marker_p (struct breakpoint *b) | |
13476 | { | |
13477 | return b->ops == &strace_marker_breakpoint_ops; | |
13478 | } | |
13479 | ||
53a5351d | 13480 | /* Delete a breakpoint and clean up all traces of it in the data |
f431efe5 | 13481 | structures. */ |
c906108c SS |
13482 | |
13483 | void | |
fba45db2 | 13484 | delete_breakpoint (struct breakpoint *bpt) |
c906108c | 13485 | { |
52f0bd74 | 13486 | struct breakpoint *b; |
c906108c | 13487 | |
8a3fe4f8 | 13488 | gdb_assert (bpt != NULL); |
c906108c | 13489 | |
4a64f543 MS |
13490 | /* Has this bp already been deleted? This can happen because |
13491 | multiple lists can hold pointers to bp's. bpstat lists are | |
13492 | especial culprits. | |
13493 | ||
13494 | One example of this happening is a watchpoint's scope bp. When | |
13495 | the scope bp triggers, we notice that the watchpoint is out of | |
13496 | scope, and delete it. We also delete its scope bp. But the | |
13497 | scope bp is marked "auto-deleting", and is already on a bpstat. | |
13498 | That bpstat is then checked for auto-deleting bp's, which are | |
13499 | deleted. | |
13500 | ||
13501 | A real solution to this problem might involve reference counts in | |
13502 | bp's, and/or giving them pointers back to their referencing | |
13503 | bpstat's, and teaching delete_breakpoint to only free a bp's | |
13504 | storage when no more references were extent. A cheaper bandaid | |
13505 | was chosen. */ | |
c906108c SS |
13506 | if (bpt->type == bp_none) |
13507 | return; | |
13508 | ||
4a64f543 MS |
13509 | /* At least avoid this stale reference until the reference counting |
13510 | of breakpoints gets resolved. */ | |
d0fb5eae | 13511 | if (bpt->related_breakpoint != bpt) |
e5a0a904 | 13512 | { |
d0fb5eae | 13513 | struct breakpoint *related; |
3a5c3e22 | 13514 | struct watchpoint *w; |
d0fb5eae JK |
13515 | |
13516 | if (bpt->type == bp_watchpoint_scope) | |
3a5c3e22 | 13517 | w = (struct watchpoint *) bpt->related_breakpoint; |
d0fb5eae | 13518 | else if (bpt->related_breakpoint->type == bp_watchpoint_scope) |
3a5c3e22 PA |
13519 | w = (struct watchpoint *) bpt; |
13520 | else | |
13521 | w = NULL; | |
13522 | if (w != NULL) | |
13523 | watchpoint_del_at_next_stop (w); | |
d0fb5eae JK |
13524 | |
13525 | /* Unlink bpt from the bpt->related_breakpoint ring. */ | |
13526 | for (related = bpt; related->related_breakpoint != bpt; | |
13527 | related = related->related_breakpoint); | |
13528 | related->related_breakpoint = bpt->related_breakpoint; | |
13529 | bpt->related_breakpoint = bpt; | |
e5a0a904 JK |
13530 | } |
13531 | ||
a9634178 TJB |
13532 | /* watch_command_1 creates a watchpoint but only sets its number if |
13533 | update_watchpoint succeeds in creating its bp_locations. If there's | |
13534 | a problem in that process, we'll be asked to delete the half-created | |
13535 | watchpoint. In that case, don't announce the deletion. */ | |
13536 | if (bpt->number) | |
13537 | observer_notify_breakpoint_deleted (bpt); | |
c906108c | 13538 | |
c906108c SS |
13539 | if (breakpoint_chain == bpt) |
13540 | breakpoint_chain = bpt->next; | |
13541 | ||
c906108c SS |
13542 | ALL_BREAKPOINTS (b) |
13543 | if (b->next == bpt) | |
c5aa993b JM |
13544 | { |
13545 | b->next = bpt->next; | |
13546 | break; | |
13547 | } | |
c906108c | 13548 | |
f431efe5 PA |
13549 | /* Be sure no bpstat's are pointing at the breakpoint after it's |
13550 | been freed. */ | |
13551 | /* FIXME, how can we find all bpstat's? We just check stop_bpstat | |
e5dd4106 | 13552 | in all threads for now. Note that we cannot just remove bpstats |
f431efe5 PA |
13553 | pointing at bpt from the stop_bpstat list entirely, as breakpoint |
13554 | commands are associated with the bpstat; if we remove it here, | |
13555 | then the later call to bpstat_do_actions (&stop_bpstat); in | |
13556 | event-top.c won't do anything, and temporary breakpoints with | |
13557 | commands won't work. */ | |
13558 | ||
13559 | iterate_over_threads (bpstat_remove_breakpoint_callback, bpt); | |
13560 | ||
4a64f543 MS |
13561 | /* Now that breakpoint is removed from breakpoint list, update the |
13562 | global location list. This will remove locations that used to | |
13563 | belong to this breakpoint. Do this before freeing the breakpoint | |
13564 | itself, since remove_breakpoint looks at location's owner. It | |
13565 | might be better design to have location completely | |
13566 | self-contained, but it's not the case now. */ | |
b60e7edf | 13567 | update_global_location_list (0); |
74960c60 | 13568 | |
348d480f | 13569 | bpt->ops->dtor (bpt); |
4a64f543 MS |
13570 | /* On the chance that someone will soon try again to delete this |
13571 | same bp, we mark it as deleted before freeing its storage. */ | |
c906108c | 13572 | bpt->type = bp_none; |
b8c9b27d | 13573 | xfree (bpt); |
c906108c SS |
13574 | } |
13575 | ||
4d6140d9 AC |
13576 | static void |
13577 | do_delete_breakpoint_cleanup (void *b) | |
13578 | { | |
13579 | delete_breakpoint (b); | |
13580 | } | |
13581 | ||
13582 | struct cleanup * | |
13583 | make_cleanup_delete_breakpoint (struct breakpoint *b) | |
13584 | { | |
13585 | return make_cleanup (do_delete_breakpoint_cleanup, b); | |
13586 | } | |
13587 | ||
51be5b68 PA |
13588 | /* Iterator function to call a user-provided callback function once |
13589 | for each of B and its related breakpoints. */ | |
13590 | ||
13591 | static void | |
13592 | iterate_over_related_breakpoints (struct breakpoint *b, | |
13593 | void (*function) (struct breakpoint *, | |
13594 | void *), | |
13595 | void *data) | |
13596 | { | |
13597 | struct breakpoint *related; | |
13598 | ||
13599 | related = b; | |
13600 | do | |
13601 | { | |
13602 | struct breakpoint *next; | |
13603 | ||
13604 | /* FUNCTION may delete RELATED. */ | |
13605 | next = related->related_breakpoint; | |
13606 | ||
13607 | if (next == related) | |
13608 | { | |
13609 | /* RELATED is the last ring entry. */ | |
13610 | function (related, data); | |
13611 | ||
13612 | /* FUNCTION may have deleted it, so we'd never reach back to | |
13613 | B. There's nothing left to do anyway, so just break | |
13614 | out. */ | |
13615 | break; | |
13616 | } | |
13617 | else | |
13618 | function (related, data); | |
13619 | ||
13620 | related = next; | |
13621 | } | |
13622 | while (related != b); | |
13623 | } | |
95a42b64 TT |
13624 | |
13625 | static void | |
13626 | do_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13627 | { | |
13628 | delete_breakpoint (b); | |
13629 | } | |
13630 | ||
51be5b68 PA |
13631 | /* A callback for map_breakpoint_numbers that calls |
13632 | delete_breakpoint. */ | |
13633 | ||
13634 | static void | |
13635 | do_map_delete_breakpoint (struct breakpoint *b, void *ignore) | |
13636 | { | |
13637 | iterate_over_related_breakpoints (b, do_delete_breakpoint, NULL); | |
13638 | } | |
13639 | ||
c906108c | 13640 | void |
fba45db2 | 13641 | delete_command (char *arg, int from_tty) |
c906108c | 13642 | { |
35df4500 | 13643 | struct breakpoint *b, *b_tmp; |
c906108c | 13644 | |
ea9365bb TT |
13645 | dont_repeat (); |
13646 | ||
c906108c SS |
13647 | if (arg == 0) |
13648 | { | |
13649 | int breaks_to_delete = 0; | |
13650 | ||
46c6471b PA |
13651 | /* Delete all breakpoints if no argument. Do not delete |
13652 | internal breakpoints, these have to be deleted with an | |
13653 | explicit breakpoint number argument. */ | |
c5aa993b | 13654 | ALL_BREAKPOINTS (b) |
46c6471b | 13655 | if (user_breakpoint_p (b)) |
973d738b DJ |
13656 | { |
13657 | breaks_to_delete = 1; | |
13658 | break; | |
13659 | } | |
c906108c SS |
13660 | |
13661 | /* Ask user only if there are some breakpoints to delete. */ | |
13662 | if (!from_tty | |
e2e0b3e5 | 13663 | || (breaks_to_delete && query (_("Delete all breakpoints? ")))) |
c906108c | 13664 | { |
35df4500 | 13665 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 13666 | if (user_breakpoint_p (b)) |
c5aa993b | 13667 | delete_breakpoint (b); |
c906108c SS |
13668 | } |
13669 | } | |
13670 | else | |
51be5b68 | 13671 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
c906108c SS |
13672 | } |
13673 | ||
0d381245 VP |
13674 | static int |
13675 | all_locations_are_pending (struct bp_location *loc) | |
fe3f5fa8 | 13676 | { |
0d381245 | 13677 | for (; loc; loc = loc->next) |
8645ff69 UW |
13678 | if (!loc->shlib_disabled |
13679 | && !loc->pspace->executing_startup) | |
0d381245 VP |
13680 | return 0; |
13681 | return 1; | |
fe3f5fa8 VP |
13682 | } |
13683 | ||
776592bf DE |
13684 | /* Subroutine of update_breakpoint_locations to simplify it. |
13685 | Return non-zero if multiple fns in list LOC have the same name. | |
13686 | Null names are ignored. */ | |
13687 | ||
13688 | static int | |
13689 | ambiguous_names_p (struct bp_location *loc) | |
13690 | { | |
13691 | struct bp_location *l; | |
13692 | htab_t htab = htab_create_alloc (13, htab_hash_string, | |
cc59ec59 MS |
13693 | (int (*) (const void *, |
13694 | const void *)) streq, | |
776592bf DE |
13695 | NULL, xcalloc, xfree); |
13696 | ||
13697 | for (l = loc; l != NULL; l = l->next) | |
13698 | { | |
13699 | const char **slot; | |
13700 | const char *name = l->function_name; | |
13701 | ||
13702 | /* Allow for some names to be NULL, ignore them. */ | |
13703 | if (name == NULL) | |
13704 | continue; | |
13705 | ||
13706 | slot = (const char **) htab_find_slot (htab, (const void *) name, | |
13707 | INSERT); | |
4a64f543 MS |
13708 | /* NOTE: We can assume slot != NULL here because xcalloc never |
13709 | returns NULL. */ | |
776592bf DE |
13710 | if (*slot != NULL) |
13711 | { | |
13712 | htab_delete (htab); | |
13713 | return 1; | |
13714 | } | |
13715 | *slot = name; | |
13716 | } | |
13717 | ||
13718 | htab_delete (htab); | |
13719 | return 0; | |
13720 | } | |
13721 | ||
0fb4aa4b PA |
13722 | /* When symbols change, it probably means the sources changed as well, |
13723 | and it might mean the static tracepoint markers are no longer at | |
13724 | the same address or line numbers they used to be at last we | |
13725 | checked. Losing your static tracepoints whenever you rebuild is | |
13726 | undesirable. This function tries to resync/rematch gdb static | |
13727 | tracepoints with the markers on the target, for static tracepoints | |
13728 | that have not been set by marker id. Static tracepoint that have | |
13729 | been set by marker id are reset by marker id in breakpoint_re_set. | |
13730 | The heuristic is: | |
13731 | ||
13732 | 1) For a tracepoint set at a specific address, look for a marker at | |
13733 | the old PC. If one is found there, assume to be the same marker. | |
13734 | If the name / string id of the marker found is different from the | |
13735 | previous known name, assume that means the user renamed the marker | |
13736 | in the sources, and output a warning. | |
13737 | ||
13738 | 2) For a tracepoint set at a given line number, look for a marker | |
13739 | at the new address of the old line number. If one is found there, | |
13740 | assume to be the same marker. If the name / string id of the | |
13741 | marker found is different from the previous known name, assume that | |
13742 | means the user renamed the marker in the sources, and output a | |
13743 | warning. | |
13744 | ||
13745 | 3) If a marker is no longer found at the same address or line, it | |
13746 | may mean the marker no longer exists. But it may also just mean | |
13747 | the code changed a bit. Maybe the user added a few lines of code | |
13748 | that made the marker move up or down (in line number terms). Ask | |
13749 | the target for info about the marker with the string id as we knew | |
13750 | it. If found, update line number and address in the matching | |
13751 | static tracepoint. This will get confused if there's more than one | |
13752 | marker with the same ID (possible in UST, although unadvised | |
13753 | precisely because it confuses tools). */ | |
13754 | ||
13755 | static struct symtab_and_line | |
13756 | update_static_tracepoint (struct breakpoint *b, struct symtab_and_line sal) | |
13757 | { | |
d9b3f62e | 13758 | struct tracepoint *tp = (struct tracepoint *) b; |
0fb4aa4b PA |
13759 | struct static_tracepoint_marker marker; |
13760 | CORE_ADDR pc; | |
0fb4aa4b PA |
13761 | |
13762 | pc = sal.pc; | |
13763 | if (sal.line) | |
13764 | find_line_pc (sal.symtab, sal.line, &pc); | |
13765 | ||
13766 | if (target_static_tracepoint_marker_at (pc, &marker)) | |
13767 | { | |
d9b3f62e | 13768 | if (strcmp (tp->static_trace_marker_id, marker.str_id) != 0) |
0fb4aa4b PA |
13769 | warning (_("static tracepoint %d changed probed marker from %s to %s"), |
13770 | b->number, | |
d9b3f62e | 13771 | tp->static_trace_marker_id, marker.str_id); |
0fb4aa4b | 13772 | |
d9b3f62e PA |
13773 | xfree (tp->static_trace_marker_id); |
13774 | tp->static_trace_marker_id = xstrdup (marker.str_id); | |
0fb4aa4b PA |
13775 | release_static_tracepoint_marker (&marker); |
13776 | ||
13777 | return sal; | |
13778 | } | |
13779 | ||
13780 | /* Old marker wasn't found on target at lineno. Try looking it up | |
13781 | by string ID. */ | |
13782 | if (!sal.explicit_pc | |
13783 | && sal.line != 0 | |
13784 | && sal.symtab != NULL | |
d9b3f62e | 13785 | && tp->static_trace_marker_id != NULL) |
0fb4aa4b PA |
13786 | { |
13787 | VEC(static_tracepoint_marker_p) *markers; | |
13788 | ||
13789 | markers | |
d9b3f62e | 13790 | = target_static_tracepoint_markers_by_strid (tp->static_trace_marker_id); |
0fb4aa4b PA |
13791 | |
13792 | if (!VEC_empty(static_tracepoint_marker_p, markers)) | |
13793 | { | |
80e1d417 | 13794 | struct symtab_and_line sal2; |
0fb4aa4b | 13795 | struct symbol *sym; |
80e1d417 | 13796 | struct static_tracepoint_marker *tpmarker; |
79a45e25 | 13797 | struct ui_out *uiout = current_uiout; |
0fb4aa4b | 13798 | |
80e1d417 | 13799 | tpmarker = VEC_index (static_tracepoint_marker_p, markers, 0); |
0fb4aa4b | 13800 | |
d9b3f62e | 13801 | xfree (tp->static_trace_marker_id); |
80e1d417 | 13802 | tp->static_trace_marker_id = xstrdup (tpmarker->str_id); |
0fb4aa4b PA |
13803 | |
13804 | warning (_("marker for static tracepoint %d (%s) not " | |
13805 | "found at previous line number"), | |
d9b3f62e | 13806 | b->number, tp->static_trace_marker_id); |
0fb4aa4b | 13807 | |
80e1d417 | 13808 | init_sal (&sal2); |
0fb4aa4b | 13809 | |
80e1d417 | 13810 | sal2.pc = tpmarker->address; |
0fb4aa4b | 13811 | |
80e1d417 AS |
13812 | sal2 = find_pc_line (tpmarker->address, 0); |
13813 | sym = find_pc_sect_function (tpmarker->address, NULL); | |
0fb4aa4b PA |
13814 | ui_out_text (uiout, "Now in "); |
13815 | if (sym) | |
13816 | { | |
13817 | ui_out_field_string (uiout, "func", | |
13818 | SYMBOL_PRINT_NAME (sym)); | |
13819 | ui_out_text (uiout, " at "); | |
13820 | } | |
05cba821 JK |
13821 | ui_out_field_string (uiout, "file", |
13822 | symtab_to_filename_for_display (sal2.symtab)); | |
0fb4aa4b PA |
13823 | ui_out_text (uiout, ":"); |
13824 | ||
13825 | if (ui_out_is_mi_like_p (uiout)) | |
13826 | { | |
0b0865da | 13827 | const char *fullname = symtab_to_fullname (sal2.symtab); |
0fb4aa4b | 13828 | |
f35a17b5 | 13829 | ui_out_field_string (uiout, "fullname", fullname); |
0fb4aa4b PA |
13830 | } |
13831 | ||
80e1d417 | 13832 | ui_out_field_int (uiout, "line", sal2.line); |
0fb4aa4b PA |
13833 | ui_out_text (uiout, "\n"); |
13834 | ||
80e1d417 | 13835 | b->loc->line_number = sal2.line; |
2f202fde | 13836 | b->loc->symtab = sym != NULL ? sal2.symtab : NULL; |
0fb4aa4b PA |
13837 | |
13838 | xfree (b->addr_string); | |
13839 | b->addr_string = xstrprintf ("%s:%d", | |
05cba821 | 13840 | symtab_to_filename_for_display (sal2.symtab), |
f8eba3c6 | 13841 | b->loc->line_number); |
0fb4aa4b PA |
13842 | |
13843 | /* Might be nice to check if function changed, and warn if | |
13844 | so. */ | |
13845 | ||
80e1d417 | 13846 | release_static_tracepoint_marker (tpmarker); |
0fb4aa4b PA |
13847 | } |
13848 | } | |
13849 | return sal; | |
13850 | } | |
13851 | ||
8d3788bd VP |
13852 | /* Returns 1 iff locations A and B are sufficiently same that |
13853 | we don't need to report breakpoint as changed. */ | |
13854 | ||
13855 | static int | |
13856 | locations_are_equal (struct bp_location *a, struct bp_location *b) | |
13857 | { | |
13858 | while (a && b) | |
13859 | { | |
13860 | if (a->address != b->address) | |
13861 | return 0; | |
13862 | ||
13863 | if (a->shlib_disabled != b->shlib_disabled) | |
13864 | return 0; | |
13865 | ||
13866 | if (a->enabled != b->enabled) | |
13867 | return 0; | |
13868 | ||
13869 | a = a->next; | |
13870 | b = b->next; | |
13871 | } | |
13872 | ||
13873 | if ((a == NULL) != (b == NULL)) | |
13874 | return 0; | |
13875 | ||
13876 | return 1; | |
13877 | } | |
13878 | ||
f1310107 TJB |
13879 | /* Create new breakpoint locations for B (a hardware or software breakpoint) |
13880 | based on SALS and SALS_END. If SALS_END.NELTS is not zero, then B is | |
13881 | a ranged breakpoint. */ | |
13882 | ||
0e30163f | 13883 | void |
0d381245 | 13884 | update_breakpoint_locations (struct breakpoint *b, |
f1310107 TJB |
13885 | struct symtabs_and_lines sals, |
13886 | struct symtabs_and_lines sals_end) | |
fe3f5fa8 VP |
13887 | { |
13888 | int i; | |
0d381245 VP |
13889 | struct bp_location *existing_locations = b->loc; |
13890 | ||
f8eba3c6 TT |
13891 | if (sals_end.nelts != 0 && (sals.nelts != 1 || sals_end.nelts != 1)) |
13892 | { | |
13893 | /* Ranged breakpoints have only one start location and one end | |
13894 | location. */ | |
13895 | b->enable_state = bp_disabled; | |
13896 | update_global_location_list (1); | |
13897 | printf_unfiltered (_("Could not reset ranged breakpoint %d: " | |
13898 | "multiple locations found\n"), | |
13899 | b->number); | |
13900 | return; | |
13901 | } | |
f1310107 | 13902 | |
4a64f543 MS |
13903 | /* If there's no new locations, and all existing locations are |
13904 | pending, don't do anything. This optimizes the common case where | |
13905 | all locations are in the same shared library, that was unloaded. | |
13906 | We'd like to retain the location, so that when the library is | |
13907 | loaded again, we don't loose the enabled/disabled status of the | |
13908 | individual locations. */ | |
0d381245 | 13909 | if (all_locations_are_pending (existing_locations) && sals.nelts == 0) |
fe3f5fa8 VP |
13910 | return; |
13911 | ||
fe3f5fa8 VP |
13912 | b->loc = NULL; |
13913 | ||
0d381245 | 13914 | for (i = 0; i < sals.nelts; ++i) |
fe3f5fa8 | 13915 | { |
f8eba3c6 TT |
13916 | struct bp_location *new_loc; |
13917 | ||
13918 | switch_to_program_space_and_thread (sals.sals[i].pspace); | |
13919 | ||
13920 | new_loc = add_location_to_breakpoint (b, &(sals.sals[i])); | |
fe3f5fa8 | 13921 | |
0d381245 VP |
13922 | /* Reparse conditions, they might contain references to the |
13923 | old symtab. */ | |
13924 | if (b->cond_string != NULL) | |
13925 | { | |
bbc13ae3 | 13926 | const char *s; |
bfd189b1 | 13927 | volatile struct gdb_exception e; |
fe3f5fa8 | 13928 | |
0d381245 VP |
13929 | s = b->cond_string; |
13930 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
13931 | { | |
1bb9788d TT |
13932 | new_loc->cond = parse_exp_1 (&s, sals.sals[i].pc, |
13933 | block_for_pc (sals.sals[i].pc), | |
0d381245 VP |
13934 | 0); |
13935 | } | |
13936 | if (e.reason < 0) | |
13937 | { | |
3e43a32a MS |
13938 | warning (_("failed to reevaluate condition " |
13939 | "for breakpoint %d: %s"), | |
0d381245 VP |
13940 | b->number, e.message); |
13941 | new_loc->enabled = 0; | |
13942 | } | |
13943 | } | |
fe3f5fa8 | 13944 | |
f1310107 TJB |
13945 | if (sals_end.nelts) |
13946 | { | |
13947 | CORE_ADDR end = find_breakpoint_range_end (sals_end.sals[0]); | |
13948 | ||
13949 | new_loc->length = end - sals.sals[0].pc + 1; | |
13950 | } | |
0d381245 | 13951 | } |
fe3f5fa8 | 13952 | |
514f746b AR |
13953 | /* Update locations of permanent breakpoints. */ |
13954 | if (b->enable_state == bp_permanent) | |
13955 | make_breakpoint_permanent (b); | |
13956 | ||
4a64f543 MS |
13957 | /* If possible, carry over 'disable' status from existing |
13958 | breakpoints. */ | |
0d381245 VP |
13959 | { |
13960 | struct bp_location *e = existing_locations; | |
776592bf DE |
13961 | /* If there are multiple breakpoints with the same function name, |
13962 | e.g. for inline functions, comparing function names won't work. | |
13963 | Instead compare pc addresses; this is just a heuristic as things | |
13964 | may have moved, but in practice it gives the correct answer | |
13965 | often enough until a better solution is found. */ | |
13966 | int have_ambiguous_names = ambiguous_names_p (b->loc); | |
13967 | ||
0d381245 VP |
13968 | for (; e; e = e->next) |
13969 | { | |
13970 | if (!e->enabled && e->function_name) | |
13971 | { | |
13972 | struct bp_location *l = b->loc; | |
776592bf DE |
13973 | if (have_ambiguous_names) |
13974 | { | |
13975 | for (; l; l = l->next) | |
f1310107 | 13976 | if (breakpoint_locations_match (e, l)) |
776592bf DE |
13977 | { |
13978 | l->enabled = 0; | |
13979 | break; | |
13980 | } | |
13981 | } | |
13982 | else | |
13983 | { | |
13984 | for (; l; l = l->next) | |
13985 | if (l->function_name | |
13986 | && strcmp (e->function_name, l->function_name) == 0) | |
13987 | { | |
13988 | l->enabled = 0; | |
13989 | break; | |
13990 | } | |
13991 | } | |
0d381245 VP |
13992 | } |
13993 | } | |
13994 | } | |
fe3f5fa8 | 13995 | |
8d3788bd VP |
13996 | if (!locations_are_equal (existing_locations, b->loc)) |
13997 | observer_notify_breakpoint_modified (b); | |
13998 | ||
b60e7edf | 13999 | update_global_location_list (1); |
fe3f5fa8 VP |
14000 | } |
14001 | ||
ef23e705 TJB |
14002 | /* Find the SaL locations corresponding to the given ADDR_STRING. |
14003 | On return, FOUND will be 1 if any SaL was found, zero otherwise. */ | |
14004 | ||
14005 | static struct symtabs_and_lines | |
14006 | addr_string_to_sals (struct breakpoint *b, char *addr_string, int *found) | |
14007 | { | |
14008 | char *s; | |
02d20e4a | 14009 | struct symtabs_and_lines sals = {0}; |
f8eba3c6 | 14010 | volatile struct gdb_exception e; |
ef23e705 | 14011 | |
983af33b | 14012 | gdb_assert (b->ops != NULL); |
ef23e705 | 14013 | s = addr_string; |
ef23e705 TJB |
14014 | |
14015 | TRY_CATCH (e, RETURN_MASK_ERROR) | |
14016 | { | |
983af33b | 14017 | b->ops->decode_linespec (b, &s, &sals); |
ef23e705 TJB |
14018 | } |
14019 | if (e.reason < 0) | |
14020 | { | |
14021 | int not_found_and_ok = 0; | |
14022 | /* For pending breakpoints, it's expected that parsing will | |
14023 | fail until the right shared library is loaded. User has | |
14024 | already told to create pending breakpoints and don't need | |
14025 | extra messages. If breakpoint is in bp_shlib_disabled | |
14026 | state, then user already saw the message about that | |
14027 | breakpoint being disabled, and don't want to see more | |
14028 | errors. */ | |
58438ac1 | 14029 | if (e.error == NOT_FOUND_ERROR |
ef23e705 TJB |
14030 | && (b->condition_not_parsed |
14031 | || (b->loc && b->loc->shlib_disabled) | |
f8eba3c6 | 14032 | || (b->loc && b->loc->pspace->executing_startup) |
ef23e705 TJB |
14033 | || b->enable_state == bp_disabled)) |
14034 | not_found_and_ok = 1; | |
14035 | ||
14036 | if (!not_found_and_ok) | |
14037 | { | |
14038 | /* We surely don't want to warn about the same breakpoint | |
14039 | 10 times. One solution, implemented here, is disable | |
14040 | the breakpoint on error. Another solution would be to | |
14041 | have separate 'warning emitted' flag. Since this | |
14042 | happens only when a binary has changed, I don't know | |
14043 | which approach is better. */ | |
14044 | b->enable_state = bp_disabled; | |
14045 | throw_exception (e); | |
14046 | } | |
14047 | } | |
14048 | ||
58438ac1 | 14049 | if (e.reason == 0 || e.error != NOT_FOUND_ERROR) |
ef23e705 | 14050 | { |
f8eba3c6 | 14051 | int i; |
ef23e705 | 14052 | |
f8eba3c6 TT |
14053 | for (i = 0; i < sals.nelts; ++i) |
14054 | resolve_sal_pc (&sals.sals[i]); | |
ef23e705 TJB |
14055 | if (b->condition_not_parsed && s && s[0]) |
14056 | { | |
ed1d1739 KS |
14057 | char *cond_string, *extra_string; |
14058 | int thread, task; | |
ef23e705 TJB |
14059 | |
14060 | find_condition_and_thread (s, sals.sals[0].pc, | |
e7e0cddf SS |
14061 | &cond_string, &thread, &task, |
14062 | &extra_string); | |
ef23e705 TJB |
14063 | if (cond_string) |
14064 | b->cond_string = cond_string; | |
14065 | b->thread = thread; | |
14066 | b->task = task; | |
e7e0cddf SS |
14067 | if (extra_string) |
14068 | b->extra_string = extra_string; | |
ef23e705 TJB |
14069 | b->condition_not_parsed = 0; |
14070 | } | |
14071 | ||
983af33b | 14072 | if (b->type == bp_static_tracepoint && !strace_marker_p (b)) |
ef23e705 | 14073 | sals.sals[0] = update_static_tracepoint (b, sals.sals[0]); |
ef23e705 | 14074 | |
58438ac1 TT |
14075 | *found = 1; |
14076 | } | |
14077 | else | |
14078 | *found = 0; | |
ef23e705 TJB |
14079 | |
14080 | return sals; | |
14081 | } | |
14082 | ||
348d480f PA |
14083 | /* The default re_set method, for typical hardware or software |
14084 | breakpoints. Reevaluate the breakpoint and recreate its | |
14085 | locations. */ | |
14086 | ||
14087 | static void | |
28010a5d | 14088 | breakpoint_re_set_default (struct breakpoint *b) |
ef23e705 TJB |
14089 | { |
14090 | int found; | |
f1310107 | 14091 | struct symtabs_and_lines sals, sals_end; |
ef23e705 | 14092 | struct symtabs_and_lines expanded = {0}; |
f1310107 | 14093 | struct symtabs_and_lines expanded_end = {0}; |
ef23e705 TJB |
14094 | |
14095 | sals = addr_string_to_sals (b, b->addr_string, &found); | |
14096 | if (found) | |
14097 | { | |
14098 | make_cleanup (xfree, sals.sals); | |
f8eba3c6 | 14099 | expanded = sals; |
ef23e705 TJB |
14100 | } |
14101 | ||
f1310107 TJB |
14102 | if (b->addr_string_range_end) |
14103 | { | |
14104 | sals_end = addr_string_to_sals (b, b->addr_string_range_end, &found); | |
14105 | if (found) | |
14106 | { | |
14107 | make_cleanup (xfree, sals_end.sals); | |
f8eba3c6 | 14108 | expanded_end = sals_end; |
f1310107 TJB |
14109 | } |
14110 | } | |
14111 | ||
14112 | update_breakpoint_locations (b, expanded, expanded_end); | |
28010a5d PA |
14113 | } |
14114 | ||
983af33b SDJ |
14115 | /* Default method for creating SALs from an address string. It basically |
14116 | calls parse_breakpoint_sals. Return 1 for success, zero for failure. */ | |
14117 | ||
14118 | static void | |
14119 | create_sals_from_address_default (char **arg, | |
14120 | struct linespec_result *canonical, | |
14121 | enum bptype type_wanted, | |
14122 | char *addr_start, char **copy_arg) | |
14123 | { | |
14124 | parse_breakpoint_sals (arg, canonical); | |
14125 | } | |
14126 | ||
14127 | /* Call create_breakpoints_sal for the given arguments. This is the default | |
14128 | function for the `create_breakpoints_sal' method of | |
14129 | breakpoint_ops. */ | |
14130 | ||
14131 | static void | |
14132 | create_breakpoints_sal_default (struct gdbarch *gdbarch, | |
14133 | struct linespec_result *canonical, | |
14134 | struct linespec_sals *lsal, | |
14135 | char *cond_string, | |
e7e0cddf | 14136 | char *extra_string, |
983af33b SDJ |
14137 | enum bptype type_wanted, |
14138 | enum bpdisp disposition, | |
14139 | int thread, | |
14140 | int task, int ignore_count, | |
14141 | const struct breakpoint_ops *ops, | |
14142 | int from_tty, int enabled, | |
44f238bb | 14143 | int internal, unsigned flags) |
983af33b SDJ |
14144 | { |
14145 | create_breakpoints_sal (gdbarch, canonical, cond_string, | |
e7e0cddf | 14146 | extra_string, |
983af33b SDJ |
14147 | type_wanted, disposition, |
14148 | thread, task, ignore_count, ops, from_tty, | |
44f238bb | 14149 | enabled, internal, flags); |
983af33b SDJ |
14150 | } |
14151 | ||
14152 | /* Decode the line represented by S by calling decode_line_full. This is the | |
14153 | default function for the `decode_linespec' method of breakpoint_ops. */ | |
14154 | ||
14155 | static void | |
14156 | decode_linespec_default (struct breakpoint *b, char **s, | |
14157 | struct symtabs_and_lines *sals) | |
14158 | { | |
14159 | struct linespec_result canonical; | |
14160 | ||
14161 | init_linespec_result (&canonical); | |
14162 | decode_line_full (s, DECODE_LINE_FUNFIRSTLINE, | |
14163 | (struct symtab *) NULL, 0, | |
14164 | &canonical, multiple_symbols_all, | |
14165 | b->filter); | |
14166 | ||
14167 | /* We should get 0 or 1 resulting SALs. */ | |
14168 | gdb_assert (VEC_length (linespec_sals, canonical.sals) < 2); | |
14169 | ||
14170 | if (VEC_length (linespec_sals, canonical.sals) > 0) | |
14171 | { | |
14172 | struct linespec_sals *lsal; | |
14173 | ||
14174 | lsal = VEC_index (linespec_sals, canonical.sals, 0); | |
14175 | *sals = lsal->sals; | |
14176 | /* Arrange it so the destructor does not free the | |
14177 | contents. */ | |
14178 | lsal->sals.sals = NULL; | |
14179 | } | |
14180 | ||
14181 | destroy_linespec_result (&canonical); | |
14182 | } | |
14183 | ||
28010a5d PA |
14184 | /* Prepare the global context for a re-set of breakpoint B. */ |
14185 | ||
14186 | static struct cleanup * | |
14187 | prepare_re_set_context (struct breakpoint *b) | |
14188 | { | |
14189 | struct cleanup *cleanups; | |
14190 | ||
14191 | input_radix = b->input_radix; | |
14192 | cleanups = save_current_space_and_thread (); | |
f8eba3c6 TT |
14193 | if (b->pspace != NULL) |
14194 | switch_to_program_space_and_thread (b->pspace); | |
28010a5d PA |
14195 | set_language (b->language); |
14196 | ||
14197 | return cleanups; | |
ef23e705 TJB |
14198 | } |
14199 | ||
c906108c SS |
14200 | /* Reset a breakpoint given it's struct breakpoint * BINT. |
14201 | The value we return ends up being the return value from catch_errors. | |
14202 | Unused in this case. */ | |
14203 | ||
14204 | static int | |
4efb68b1 | 14205 | breakpoint_re_set_one (void *bint) |
c906108c | 14206 | { |
4a64f543 | 14207 | /* Get past catch_errs. */ |
53a5351d | 14208 | struct breakpoint *b = (struct breakpoint *) bint; |
348d480f | 14209 | struct cleanup *cleanups; |
c906108c | 14210 | |
348d480f PA |
14211 | cleanups = prepare_re_set_context (b); |
14212 | b->ops->re_set (b); | |
14213 | do_cleanups (cleanups); | |
c906108c SS |
14214 | return 0; |
14215 | } | |
14216 | ||
69de3c6a | 14217 | /* Re-set all breakpoints after symbols have been re-loaded. */ |
c906108c | 14218 | void |
69de3c6a | 14219 | breakpoint_re_set (void) |
c906108c | 14220 | { |
35df4500 | 14221 | struct breakpoint *b, *b_tmp; |
c906108c SS |
14222 | enum language save_language; |
14223 | int save_input_radix; | |
6c95b8df | 14224 | struct cleanup *old_chain; |
c5aa993b | 14225 | |
c906108c SS |
14226 | save_language = current_language->la_language; |
14227 | save_input_radix = input_radix; | |
6c95b8df PA |
14228 | old_chain = save_current_program_space (); |
14229 | ||
35df4500 | 14230 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
c5aa993b | 14231 | { |
4a64f543 | 14232 | /* Format possible error msg. */ |
fe3f5fa8 | 14233 | char *message = xstrprintf ("Error in re-setting breakpoint %d: ", |
9ebf4acf AC |
14234 | b->number); |
14235 | struct cleanup *cleanups = make_cleanup (xfree, message); | |
c5aa993b | 14236 | catch_errors (breakpoint_re_set_one, b, message, RETURN_MASK_ALL); |
9ebf4acf | 14237 | do_cleanups (cleanups); |
c5aa993b | 14238 | } |
c906108c SS |
14239 | set_language (save_language); |
14240 | input_radix = save_input_radix; | |
e62c965a | 14241 | |
0756c555 | 14242 | jit_breakpoint_re_set (); |
4efc6507 | 14243 | |
6c95b8df PA |
14244 | do_cleanups (old_chain); |
14245 | ||
af02033e PP |
14246 | create_overlay_event_breakpoint (); |
14247 | create_longjmp_master_breakpoint (); | |
14248 | create_std_terminate_master_breakpoint (); | |
186c406b | 14249 | create_exception_master_breakpoint (); |
c906108c SS |
14250 | } |
14251 | \f | |
c906108c SS |
14252 | /* Reset the thread number of this breakpoint: |
14253 | ||
14254 | - If the breakpoint is for all threads, leave it as-is. | |
4a64f543 | 14255 | - Else, reset it to the current thread for inferior_ptid. */ |
c906108c | 14256 | void |
fba45db2 | 14257 | breakpoint_re_set_thread (struct breakpoint *b) |
c906108c SS |
14258 | { |
14259 | if (b->thread != -1) | |
14260 | { | |
39f77062 KB |
14261 | if (in_thread_list (inferior_ptid)) |
14262 | b->thread = pid_to_thread_id (inferior_ptid); | |
6c95b8df PA |
14263 | |
14264 | /* We're being called after following a fork. The new fork is | |
14265 | selected as current, and unless this was a vfork will have a | |
14266 | different program space from the original thread. Reset that | |
14267 | as well. */ | |
14268 | b->loc->pspace = current_program_space; | |
c906108c SS |
14269 | } |
14270 | } | |
14271 | ||
03ac34d5 MS |
14272 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14273 | If from_tty is nonzero, it prints a message to that effect, | |
14274 | which ends with a period (no newline). */ | |
14275 | ||
c906108c | 14276 | void |
fba45db2 | 14277 | set_ignore_count (int bptnum, int count, int from_tty) |
c906108c | 14278 | { |
52f0bd74 | 14279 | struct breakpoint *b; |
c906108c SS |
14280 | |
14281 | if (count < 0) | |
14282 | count = 0; | |
14283 | ||
14284 | ALL_BREAKPOINTS (b) | |
14285 | if (b->number == bptnum) | |
c5aa993b | 14286 | { |
d77f58be SS |
14287 | if (is_tracepoint (b)) |
14288 | { | |
14289 | if (from_tty && count != 0) | |
14290 | printf_filtered (_("Ignore count ignored for tracepoint %d."), | |
14291 | bptnum); | |
14292 | return; | |
14293 | } | |
14294 | ||
c5aa993b | 14295 | b->ignore_count = count; |
221ea385 KS |
14296 | if (from_tty) |
14297 | { | |
14298 | if (count == 0) | |
3e43a32a MS |
14299 | printf_filtered (_("Will stop next time " |
14300 | "breakpoint %d is reached."), | |
221ea385 KS |
14301 | bptnum); |
14302 | else if (count == 1) | |
a3f17187 | 14303 | printf_filtered (_("Will ignore next crossing of breakpoint %d."), |
221ea385 KS |
14304 | bptnum); |
14305 | else | |
3e43a32a MS |
14306 | printf_filtered (_("Will ignore next %d " |
14307 | "crossings of breakpoint %d."), | |
221ea385 KS |
14308 | count, bptnum); |
14309 | } | |
8d3788bd | 14310 | observer_notify_breakpoint_modified (b); |
c5aa993b JM |
14311 | return; |
14312 | } | |
c906108c | 14313 | |
8a3fe4f8 | 14314 | error (_("No breakpoint number %d."), bptnum); |
c906108c SS |
14315 | } |
14316 | ||
c906108c SS |
14317 | /* Command to set ignore-count of breakpoint N to COUNT. */ |
14318 | ||
14319 | static void | |
fba45db2 | 14320 | ignore_command (char *args, int from_tty) |
c906108c SS |
14321 | { |
14322 | char *p = args; | |
52f0bd74 | 14323 | int num; |
c906108c SS |
14324 | |
14325 | if (p == 0) | |
e2e0b3e5 | 14326 | error_no_arg (_("a breakpoint number")); |
c5aa993b | 14327 | |
c906108c | 14328 | num = get_number (&p); |
5c44784c | 14329 | if (num == 0) |
8a3fe4f8 | 14330 | error (_("bad breakpoint number: '%s'"), args); |
c906108c | 14331 | if (*p == 0) |
8a3fe4f8 | 14332 | error (_("Second argument (specified ignore-count) is missing.")); |
c906108c SS |
14333 | |
14334 | set_ignore_count (num, | |
14335 | longest_to_int (value_as_long (parse_and_eval (p))), | |
14336 | from_tty); | |
221ea385 KS |
14337 | if (from_tty) |
14338 | printf_filtered ("\n"); | |
c906108c SS |
14339 | } |
14340 | \f | |
14341 | /* Call FUNCTION on each of the breakpoints | |
14342 | whose numbers are given in ARGS. */ | |
14343 | ||
14344 | static void | |
95a42b64 TT |
14345 | map_breakpoint_numbers (char *args, void (*function) (struct breakpoint *, |
14346 | void *), | |
14347 | void *data) | |
c906108c | 14348 | { |
52f0bd74 AC |
14349 | int num; |
14350 | struct breakpoint *b, *tmp; | |
11cf8741 | 14351 | int match; |
197f0a60 | 14352 | struct get_number_or_range_state state; |
c906108c | 14353 | |
197f0a60 | 14354 | if (args == 0) |
e2e0b3e5 | 14355 | error_no_arg (_("one or more breakpoint numbers")); |
c906108c | 14356 | |
197f0a60 TT |
14357 | init_number_or_range (&state, args); |
14358 | ||
14359 | while (!state.finished) | |
c906108c | 14360 | { |
197f0a60 TT |
14361 | char *p = state.string; |
14362 | ||
11cf8741 | 14363 | match = 0; |
c5aa993b | 14364 | |
197f0a60 | 14365 | num = get_number_or_range (&state); |
5c44784c | 14366 | if (num == 0) |
c5aa993b | 14367 | { |
8a3fe4f8 | 14368 | warning (_("bad breakpoint number at or near '%s'"), p); |
5c44784c JM |
14369 | } |
14370 | else | |
14371 | { | |
14372 | ALL_BREAKPOINTS_SAFE (b, tmp) | |
14373 | if (b->number == num) | |
14374 | { | |
11cf8741 | 14375 | match = 1; |
cdac0397 | 14376 | function (b, data); |
11cf8741 | 14377 | break; |
5c44784c | 14378 | } |
11cf8741 | 14379 | if (match == 0) |
a3f17187 | 14380 | printf_unfiltered (_("No breakpoint number %d.\n"), num); |
c5aa993b | 14381 | } |
c906108c SS |
14382 | } |
14383 | } | |
14384 | ||
0d381245 VP |
14385 | static struct bp_location * |
14386 | find_location_by_number (char *number) | |
14387 | { | |
14388 | char *dot = strchr (number, '.'); | |
14389 | char *p1; | |
14390 | int bp_num; | |
14391 | int loc_num; | |
14392 | struct breakpoint *b; | |
14393 | struct bp_location *loc; | |
14394 | ||
14395 | *dot = '\0'; | |
14396 | ||
14397 | p1 = number; | |
197f0a60 | 14398 | bp_num = get_number (&p1); |
0d381245 VP |
14399 | if (bp_num == 0) |
14400 | error (_("Bad breakpoint number '%s'"), number); | |
14401 | ||
14402 | ALL_BREAKPOINTS (b) | |
14403 | if (b->number == bp_num) | |
14404 | { | |
14405 | break; | |
14406 | } | |
14407 | ||
14408 | if (!b || b->number != bp_num) | |
14409 | error (_("Bad breakpoint number '%s'"), number); | |
14410 | ||
14411 | p1 = dot+1; | |
197f0a60 | 14412 | loc_num = get_number (&p1); |
0d381245 VP |
14413 | if (loc_num == 0) |
14414 | error (_("Bad breakpoint location number '%s'"), number); | |
14415 | ||
14416 | --loc_num; | |
14417 | loc = b->loc; | |
14418 | for (;loc_num && loc; --loc_num, loc = loc->next) | |
14419 | ; | |
14420 | if (!loc) | |
14421 | error (_("Bad breakpoint location number '%s'"), dot+1); | |
14422 | ||
14423 | return loc; | |
14424 | } | |
14425 | ||
14426 | ||
1900040c MS |
14427 | /* Set ignore-count of breakpoint number BPTNUM to COUNT. |
14428 | If from_tty is nonzero, it prints a message to that effect, | |
14429 | which ends with a period (no newline). */ | |
14430 | ||
c906108c | 14431 | void |
fba45db2 | 14432 | disable_breakpoint (struct breakpoint *bpt) |
c906108c SS |
14433 | { |
14434 | /* Never disable a watchpoint scope breakpoint; we want to | |
14435 | hit them when we leave scope so we can delete both the | |
14436 | watchpoint and its scope breakpoint at that time. */ | |
14437 | if (bpt->type == bp_watchpoint_scope) | |
14438 | return; | |
14439 | ||
c2c6d25f | 14440 | /* You can't disable permanent breakpoints. */ |
b5de0fa7 | 14441 | if (bpt->enable_state == bp_permanent) |
c2c6d25f JM |
14442 | return; |
14443 | ||
b5de0fa7 | 14444 | bpt->enable_state = bp_disabled; |
c906108c | 14445 | |
b775012e LM |
14446 | /* Mark breakpoint locations modified. */ |
14447 | mark_breakpoint_modified (bpt); | |
14448 | ||
d248b706 KY |
14449 | if (target_supports_enable_disable_tracepoint () |
14450 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14451 | { | |
14452 | struct bp_location *location; | |
14453 | ||
14454 | for (location = bpt->loc; location; location = location->next) | |
14455 | target_disable_tracepoint (location); | |
14456 | } | |
14457 | ||
b60e7edf | 14458 | update_global_location_list (0); |
c906108c | 14459 | |
8d3788bd | 14460 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14461 | } |
14462 | ||
51be5b68 PA |
14463 | /* A callback for iterate_over_related_breakpoints. */ |
14464 | ||
14465 | static void | |
14466 | do_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14467 | { | |
14468 | disable_breakpoint (b); | |
14469 | } | |
14470 | ||
95a42b64 TT |
14471 | /* A callback for map_breakpoint_numbers that calls |
14472 | disable_breakpoint. */ | |
14473 | ||
14474 | static void | |
14475 | do_map_disable_breakpoint (struct breakpoint *b, void *ignore) | |
14476 | { | |
51be5b68 | 14477 | iterate_over_related_breakpoints (b, do_disable_breakpoint, NULL); |
95a42b64 TT |
14478 | } |
14479 | ||
c906108c | 14480 | static void |
fba45db2 | 14481 | disable_command (char *args, int from_tty) |
c906108c | 14482 | { |
c906108c | 14483 | if (args == 0) |
46c6471b PA |
14484 | { |
14485 | struct breakpoint *bpt; | |
14486 | ||
14487 | ALL_BREAKPOINTS (bpt) | |
14488 | if (user_breakpoint_p (bpt)) | |
14489 | disable_breakpoint (bpt); | |
14490 | } | |
0d381245 VP |
14491 | else if (strchr (args, '.')) |
14492 | { | |
14493 | struct bp_location *loc = find_location_by_number (args); | |
14494 | if (loc) | |
d248b706 | 14495 | { |
b775012e LM |
14496 | if (loc->enabled) |
14497 | { | |
14498 | loc->enabled = 0; | |
14499 | mark_breakpoint_location_modified (loc); | |
14500 | } | |
d248b706 KY |
14501 | if (target_supports_enable_disable_tracepoint () |
14502 | && current_trace_status ()->running && loc->owner | |
14503 | && is_tracepoint (loc->owner)) | |
14504 | target_disable_tracepoint (loc); | |
14505 | } | |
b60e7edf | 14506 | update_global_location_list (0); |
0d381245 | 14507 | } |
c906108c | 14508 | else |
95a42b64 | 14509 | map_breakpoint_numbers (args, do_map_disable_breakpoint, NULL); |
c906108c SS |
14510 | } |
14511 | ||
14512 | static void | |
816338b5 SS |
14513 | enable_breakpoint_disp (struct breakpoint *bpt, enum bpdisp disposition, |
14514 | int count) | |
c906108c | 14515 | { |
afe38095 | 14516 | int target_resources_ok; |
c906108c SS |
14517 | |
14518 | if (bpt->type == bp_hardware_breakpoint) | |
14519 | { | |
14520 | int i; | |
c5aa993b | 14521 | i = hw_breakpoint_used_count (); |
53a5351d | 14522 | target_resources_ok = |
d92524f1 | 14523 | target_can_use_hardware_watchpoint (bp_hardware_breakpoint, |
53a5351d | 14524 | i + 1, 0); |
c906108c | 14525 | if (target_resources_ok == 0) |
8a3fe4f8 | 14526 | error (_("No hardware breakpoint support in the target.")); |
c906108c | 14527 | else if (target_resources_ok < 0) |
8a3fe4f8 | 14528 | error (_("Hardware breakpoints used exceeds limit.")); |
c906108c SS |
14529 | } |
14530 | ||
cc60f2e3 | 14531 | if (is_watchpoint (bpt)) |
c906108c | 14532 | { |
d07205c2 JK |
14533 | /* Initialize it just to avoid a GCC false warning. */ |
14534 | enum enable_state orig_enable_state = 0; | |
bfd189b1 | 14535 | volatile struct gdb_exception e; |
dde02812 ES |
14536 | |
14537 | TRY_CATCH (e, RETURN_MASK_ALL) | |
c906108c | 14538 | { |
3a5c3e22 PA |
14539 | struct watchpoint *w = (struct watchpoint *) bpt; |
14540 | ||
1e718ff1 TJB |
14541 | orig_enable_state = bpt->enable_state; |
14542 | bpt->enable_state = bp_enabled; | |
3a5c3e22 | 14543 | update_watchpoint (w, 1 /* reparse */); |
c906108c | 14544 | } |
dde02812 | 14545 | if (e.reason < 0) |
c5aa993b | 14546 | { |
1e718ff1 | 14547 | bpt->enable_state = orig_enable_state; |
dde02812 ES |
14548 | exception_fprintf (gdb_stderr, e, _("Cannot enable watchpoint %d: "), |
14549 | bpt->number); | |
14550 | return; | |
c5aa993b | 14551 | } |
c906108c | 14552 | } |
0101ce28 | 14553 | |
b4c291bb KH |
14554 | if (bpt->enable_state != bp_permanent) |
14555 | bpt->enable_state = bp_enabled; | |
d248b706 | 14556 | |
b775012e LM |
14557 | bpt->enable_state = bp_enabled; |
14558 | ||
14559 | /* Mark breakpoint locations modified. */ | |
14560 | mark_breakpoint_modified (bpt); | |
14561 | ||
d248b706 KY |
14562 | if (target_supports_enable_disable_tracepoint () |
14563 | && current_trace_status ()->running && is_tracepoint (bpt)) | |
14564 | { | |
14565 | struct bp_location *location; | |
14566 | ||
14567 | for (location = bpt->loc; location; location = location->next) | |
14568 | target_enable_tracepoint (location); | |
14569 | } | |
14570 | ||
b4c291bb | 14571 | bpt->disposition = disposition; |
816338b5 | 14572 | bpt->enable_count = count; |
b60e7edf | 14573 | update_global_location_list (1); |
9c97429f | 14574 | |
8d3788bd | 14575 | observer_notify_breakpoint_modified (bpt); |
c906108c SS |
14576 | } |
14577 | ||
fe3f5fa8 | 14578 | |
c906108c | 14579 | void |
fba45db2 | 14580 | enable_breakpoint (struct breakpoint *bpt) |
c906108c | 14581 | { |
816338b5 | 14582 | enable_breakpoint_disp (bpt, bpt->disposition, 0); |
51be5b68 PA |
14583 | } |
14584 | ||
14585 | static void | |
14586 | do_enable_breakpoint (struct breakpoint *bpt, void *arg) | |
14587 | { | |
14588 | enable_breakpoint (bpt); | |
c906108c SS |
14589 | } |
14590 | ||
95a42b64 TT |
14591 | /* A callback for map_breakpoint_numbers that calls |
14592 | enable_breakpoint. */ | |
14593 | ||
14594 | static void | |
14595 | do_map_enable_breakpoint (struct breakpoint *b, void *ignore) | |
14596 | { | |
51be5b68 | 14597 | iterate_over_related_breakpoints (b, do_enable_breakpoint, NULL); |
95a42b64 TT |
14598 | } |
14599 | ||
c906108c SS |
14600 | /* The enable command enables the specified breakpoints (or all defined |
14601 | breakpoints) so they once again become (or continue to be) effective | |
1272ad14 | 14602 | in stopping the inferior. */ |
c906108c | 14603 | |
c906108c | 14604 | static void |
fba45db2 | 14605 | enable_command (char *args, int from_tty) |
c906108c | 14606 | { |
c906108c | 14607 | if (args == 0) |
46c6471b PA |
14608 | { |
14609 | struct breakpoint *bpt; | |
14610 | ||
14611 | ALL_BREAKPOINTS (bpt) | |
14612 | if (user_breakpoint_p (bpt)) | |
14613 | enable_breakpoint (bpt); | |
14614 | } | |
0d381245 VP |
14615 | else if (strchr (args, '.')) |
14616 | { | |
14617 | struct bp_location *loc = find_location_by_number (args); | |
14618 | if (loc) | |
d248b706 | 14619 | { |
b775012e LM |
14620 | if (!loc->enabled) |
14621 | { | |
14622 | loc->enabled = 1; | |
14623 | mark_breakpoint_location_modified (loc); | |
14624 | } | |
d248b706 KY |
14625 | if (target_supports_enable_disable_tracepoint () |
14626 | && current_trace_status ()->running && loc->owner | |
14627 | && is_tracepoint (loc->owner)) | |
14628 | target_enable_tracepoint (loc); | |
14629 | } | |
b60e7edf | 14630 | update_global_location_list (1); |
0d381245 | 14631 | } |
c906108c | 14632 | else |
95a42b64 | 14633 | map_breakpoint_numbers (args, do_map_enable_breakpoint, NULL); |
c906108c SS |
14634 | } |
14635 | ||
816338b5 SS |
14636 | /* This struct packages up disposition data for application to multiple |
14637 | breakpoints. */ | |
14638 | ||
14639 | struct disp_data | |
14640 | { | |
14641 | enum bpdisp disp; | |
14642 | int count; | |
14643 | }; | |
14644 | ||
c906108c | 14645 | static void |
51be5b68 PA |
14646 | do_enable_breakpoint_disp (struct breakpoint *bpt, void *arg) |
14647 | { | |
816338b5 | 14648 | struct disp_data disp_data = *(struct disp_data *) arg; |
51be5b68 | 14649 | |
816338b5 | 14650 | enable_breakpoint_disp (bpt, disp_data.disp, disp_data.count); |
51be5b68 PA |
14651 | } |
14652 | ||
14653 | static void | |
14654 | do_map_enable_once_breakpoint (struct breakpoint *bpt, void *ignore) | |
c906108c | 14655 | { |
816338b5 | 14656 | struct disp_data disp = { disp_disable, 1 }; |
51be5b68 PA |
14657 | |
14658 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14659 | } |
14660 | ||
c906108c | 14661 | static void |
fba45db2 | 14662 | enable_once_command (char *args, int from_tty) |
c906108c | 14663 | { |
51be5b68 | 14664 | map_breakpoint_numbers (args, do_map_enable_once_breakpoint, NULL); |
c906108c SS |
14665 | } |
14666 | ||
816338b5 SS |
14667 | static void |
14668 | do_map_enable_count_breakpoint (struct breakpoint *bpt, void *countptr) | |
14669 | { | |
14670 | struct disp_data disp = { disp_disable, *(int *) countptr }; | |
14671 | ||
14672 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
14673 | } | |
14674 | ||
14675 | static void | |
14676 | enable_count_command (char *args, int from_tty) | |
14677 | { | |
14678 | int count = get_number (&args); | |
14679 | ||
14680 | map_breakpoint_numbers (args, do_map_enable_count_breakpoint, &count); | |
14681 | } | |
14682 | ||
c906108c | 14683 | static void |
51be5b68 | 14684 | do_map_enable_delete_breakpoint (struct breakpoint *bpt, void *ignore) |
c906108c | 14685 | { |
816338b5 | 14686 | struct disp_data disp = { disp_del, 1 }; |
51be5b68 PA |
14687 | |
14688 | iterate_over_related_breakpoints (bpt, do_enable_breakpoint_disp, &disp); | |
c906108c SS |
14689 | } |
14690 | ||
c906108c | 14691 | static void |
fba45db2 | 14692 | enable_delete_command (char *args, int from_tty) |
c906108c | 14693 | { |
51be5b68 | 14694 | map_breakpoint_numbers (args, do_map_enable_delete_breakpoint, NULL); |
c906108c SS |
14695 | } |
14696 | \f | |
fa8d40ab JJ |
14697 | static void |
14698 | set_breakpoint_cmd (char *args, int from_tty) | |
14699 | { | |
14700 | } | |
14701 | ||
14702 | static void | |
14703 | show_breakpoint_cmd (char *args, int from_tty) | |
14704 | { | |
14705 | } | |
14706 | ||
1f3b5d1b PP |
14707 | /* Invalidate last known value of any hardware watchpoint if |
14708 | the memory which that value represents has been written to by | |
14709 | GDB itself. */ | |
14710 | ||
14711 | static void | |
8de0566d YQ |
14712 | invalidate_bp_value_on_memory_change (struct inferior *inferior, |
14713 | CORE_ADDR addr, ssize_t len, | |
1f3b5d1b PP |
14714 | const bfd_byte *data) |
14715 | { | |
14716 | struct breakpoint *bp; | |
14717 | ||
14718 | ALL_BREAKPOINTS (bp) | |
14719 | if (bp->enable_state == bp_enabled | |
3a5c3e22 | 14720 | && bp->type == bp_hardware_watchpoint) |
1f3b5d1b | 14721 | { |
3a5c3e22 | 14722 | struct watchpoint *wp = (struct watchpoint *) bp; |
1f3b5d1b | 14723 | |
3a5c3e22 PA |
14724 | if (wp->val_valid && wp->val) |
14725 | { | |
14726 | struct bp_location *loc; | |
14727 | ||
14728 | for (loc = bp->loc; loc != NULL; loc = loc->next) | |
14729 | if (loc->loc_type == bp_loc_hardware_watchpoint | |
14730 | && loc->address + loc->length > addr | |
14731 | && addr + len > loc->address) | |
14732 | { | |
14733 | value_free (wp->val); | |
14734 | wp->val = NULL; | |
14735 | wp->val_valid = 0; | |
14736 | } | |
14737 | } | |
1f3b5d1b PP |
14738 | } |
14739 | } | |
14740 | ||
8181d85f DJ |
14741 | /* Create and insert a raw software breakpoint at PC. Return an |
14742 | identifier, which should be used to remove the breakpoint later. | |
14743 | In general, places which call this should be using something on the | |
14744 | breakpoint chain instead; this function should be eliminated | |
14745 | someday. */ | |
14746 | ||
14747 | void * | |
6c95b8df PA |
14748 | deprecated_insert_raw_breakpoint (struct gdbarch *gdbarch, |
14749 | struct address_space *aspace, CORE_ADDR pc) | |
8181d85f DJ |
14750 | { |
14751 | struct bp_target_info *bp_tgt; | |
14752 | ||
6c95b8df | 14753 | bp_tgt = XZALLOC (struct bp_target_info); |
8181d85f | 14754 | |
6c95b8df | 14755 | bp_tgt->placed_address_space = aspace; |
8181d85f | 14756 | bp_tgt->placed_address = pc; |
6c95b8df | 14757 | |
a6d9a66e | 14758 | if (target_insert_breakpoint (gdbarch, bp_tgt) != 0) |
8181d85f DJ |
14759 | { |
14760 | /* Could not insert the breakpoint. */ | |
14761 | xfree (bp_tgt); | |
14762 | return NULL; | |
14763 | } | |
14764 | ||
14765 | return bp_tgt; | |
14766 | } | |
14767 | ||
4a64f543 MS |
14768 | /* Remove a breakpoint BP inserted by |
14769 | deprecated_insert_raw_breakpoint. */ | |
8181d85f DJ |
14770 | |
14771 | int | |
a6d9a66e | 14772 | deprecated_remove_raw_breakpoint (struct gdbarch *gdbarch, void *bp) |
8181d85f DJ |
14773 | { |
14774 | struct bp_target_info *bp_tgt = bp; | |
14775 | int ret; | |
14776 | ||
a6d9a66e | 14777 | ret = target_remove_breakpoint (gdbarch, bp_tgt); |
8181d85f DJ |
14778 | xfree (bp_tgt); |
14779 | ||
14780 | return ret; | |
14781 | } | |
14782 | ||
4a64f543 MS |
14783 | /* One (or perhaps two) breakpoints used for software single |
14784 | stepping. */ | |
8181d85f DJ |
14785 | |
14786 | static void *single_step_breakpoints[2]; | |
a6d9a66e | 14787 | static struct gdbarch *single_step_gdbarch[2]; |
8181d85f DJ |
14788 | |
14789 | /* Create and insert a breakpoint for software single step. */ | |
14790 | ||
14791 | void | |
6c95b8df | 14792 | insert_single_step_breakpoint (struct gdbarch *gdbarch, |
4a64f543 MS |
14793 | struct address_space *aspace, |
14794 | CORE_ADDR next_pc) | |
8181d85f DJ |
14795 | { |
14796 | void **bpt_p; | |
14797 | ||
14798 | if (single_step_breakpoints[0] == NULL) | |
a6d9a66e UW |
14799 | { |
14800 | bpt_p = &single_step_breakpoints[0]; | |
14801 | single_step_gdbarch[0] = gdbarch; | |
14802 | } | |
8181d85f DJ |
14803 | else |
14804 | { | |
14805 | gdb_assert (single_step_breakpoints[1] == NULL); | |
14806 | bpt_p = &single_step_breakpoints[1]; | |
a6d9a66e | 14807 | single_step_gdbarch[1] = gdbarch; |
8181d85f DJ |
14808 | } |
14809 | ||
4a64f543 MS |
14810 | /* NOTE drow/2006-04-11: A future improvement to this function would |
14811 | be to only create the breakpoints once, and actually put them on | |
14812 | the breakpoint chain. That would let us use set_raw_breakpoint. | |
14813 | We could adjust the addresses each time they were needed. Doing | |
14814 | this requires corresponding changes elsewhere where single step | |
14815 | breakpoints are handled, however. So, for now, we use this. */ | |
8181d85f | 14816 | |
6c95b8df | 14817 | *bpt_p = deprecated_insert_raw_breakpoint (gdbarch, aspace, next_pc); |
8181d85f | 14818 | if (*bpt_p == NULL) |
5af949e3 UW |
14819 | error (_("Could not insert single-step breakpoint at %s"), |
14820 | paddress (gdbarch, next_pc)); | |
8181d85f DJ |
14821 | } |
14822 | ||
f02253f1 HZ |
14823 | /* Check if the breakpoints used for software single stepping |
14824 | were inserted or not. */ | |
14825 | ||
14826 | int | |
14827 | single_step_breakpoints_inserted (void) | |
14828 | { | |
14829 | return (single_step_breakpoints[0] != NULL | |
14830 | || single_step_breakpoints[1] != NULL); | |
14831 | } | |
14832 | ||
8181d85f DJ |
14833 | /* Remove and delete any breakpoints used for software single step. */ |
14834 | ||
14835 | void | |
14836 | remove_single_step_breakpoints (void) | |
14837 | { | |
14838 | gdb_assert (single_step_breakpoints[0] != NULL); | |
14839 | ||
14840 | /* See insert_single_step_breakpoint for more about this deprecated | |
14841 | call. */ | |
a6d9a66e UW |
14842 | deprecated_remove_raw_breakpoint (single_step_gdbarch[0], |
14843 | single_step_breakpoints[0]); | |
14844 | single_step_gdbarch[0] = NULL; | |
8181d85f DJ |
14845 | single_step_breakpoints[0] = NULL; |
14846 | ||
14847 | if (single_step_breakpoints[1] != NULL) | |
14848 | { | |
a6d9a66e UW |
14849 | deprecated_remove_raw_breakpoint (single_step_gdbarch[1], |
14850 | single_step_breakpoints[1]); | |
14851 | single_step_gdbarch[1] = NULL; | |
8181d85f DJ |
14852 | single_step_breakpoints[1] = NULL; |
14853 | } | |
14854 | } | |
14855 | ||
d03285ec UW |
14856 | /* Delete software single step breakpoints without removing them from |
14857 | the inferior. This is intended to be used if the inferior's address | |
14858 | space where they were inserted is already gone, e.g. after exit or | |
14859 | exec. */ | |
14860 | ||
14861 | void | |
14862 | cancel_single_step_breakpoints (void) | |
14863 | { | |
14864 | int i; | |
14865 | ||
14866 | for (i = 0; i < 2; i++) | |
14867 | if (single_step_breakpoints[i]) | |
14868 | { | |
14869 | xfree (single_step_breakpoints[i]); | |
14870 | single_step_breakpoints[i] = NULL; | |
14871 | single_step_gdbarch[i] = NULL; | |
14872 | } | |
14873 | } | |
14874 | ||
14875 | /* Detach software single-step breakpoints from INFERIOR_PTID without | |
14876 | removing them. */ | |
14877 | ||
14878 | static void | |
14879 | detach_single_step_breakpoints (void) | |
14880 | { | |
14881 | int i; | |
14882 | ||
14883 | for (i = 0; i < 2; i++) | |
14884 | if (single_step_breakpoints[i]) | |
14885 | target_remove_breakpoint (single_step_gdbarch[i], | |
14886 | single_step_breakpoints[i]); | |
14887 | } | |
14888 | ||
4a64f543 MS |
14889 | /* Check whether a software single-step breakpoint is inserted at |
14890 | PC. */ | |
1aafd4da UW |
14891 | |
14892 | static int | |
cc59ec59 MS |
14893 | single_step_breakpoint_inserted_here_p (struct address_space *aspace, |
14894 | CORE_ADDR pc) | |
1aafd4da UW |
14895 | { |
14896 | int i; | |
14897 | ||
14898 | for (i = 0; i < 2; i++) | |
14899 | { | |
14900 | struct bp_target_info *bp_tgt = single_step_breakpoints[i]; | |
6c95b8df PA |
14901 | if (bp_tgt |
14902 | && breakpoint_address_match (bp_tgt->placed_address_space, | |
14903 | bp_tgt->placed_address, | |
14904 | aspace, pc)) | |
1aafd4da UW |
14905 | return 1; |
14906 | } | |
14907 | ||
14908 | return 0; | |
14909 | } | |
14910 | ||
a96d9b2e SDJ |
14911 | /* Returns 0 if 'bp' is NOT a syscall catchpoint, |
14912 | non-zero otherwise. */ | |
14913 | static int | |
14914 | is_syscall_catchpoint_enabled (struct breakpoint *bp) | |
14915 | { | |
14916 | if (syscall_catchpoint_p (bp) | |
14917 | && bp->enable_state != bp_disabled | |
14918 | && bp->enable_state != bp_call_disabled) | |
14919 | return 1; | |
14920 | else | |
14921 | return 0; | |
14922 | } | |
14923 | ||
14924 | int | |
14925 | catch_syscall_enabled (void) | |
14926 | { | |
fa3064dd YQ |
14927 | struct catch_syscall_inferior_data *inf_data |
14928 | = get_catch_syscall_inferior_data (current_inferior ()); | |
a96d9b2e | 14929 | |
fa3064dd | 14930 | return inf_data->total_syscalls_count != 0; |
a96d9b2e SDJ |
14931 | } |
14932 | ||
14933 | int | |
14934 | catching_syscall_number (int syscall_number) | |
14935 | { | |
14936 | struct breakpoint *bp; | |
14937 | ||
14938 | ALL_BREAKPOINTS (bp) | |
14939 | if (is_syscall_catchpoint_enabled (bp)) | |
14940 | { | |
be5c67c1 PA |
14941 | struct syscall_catchpoint *c = (struct syscall_catchpoint *) bp; |
14942 | ||
14943 | if (c->syscalls_to_be_caught) | |
a96d9b2e SDJ |
14944 | { |
14945 | int i, iter; | |
14946 | for (i = 0; | |
be5c67c1 | 14947 | VEC_iterate (int, c->syscalls_to_be_caught, i, iter); |
a96d9b2e SDJ |
14948 | i++) |
14949 | if (syscall_number == iter) | |
14950 | return 1; | |
14951 | } | |
14952 | else | |
14953 | return 1; | |
14954 | } | |
14955 | ||
14956 | return 0; | |
14957 | } | |
14958 | ||
14959 | /* Complete syscall names. Used by "catch syscall". */ | |
49c4e619 | 14960 | static VEC (char_ptr) * |
a96d9b2e | 14961 | catch_syscall_completer (struct cmd_list_element *cmd, |
6f937416 | 14962 | const char *text, const char *word) |
a96d9b2e SDJ |
14963 | { |
14964 | const char **list = get_syscall_names (); | |
49c4e619 | 14965 | VEC (char_ptr) *retlist |
b45627a0 | 14966 | = (list == NULL) ? NULL : complete_on_enum (list, word, word); |
cc59ec59 | 14967 | |
c38eea1a MS |
14968 | xfree (list); |
14969 | return retlist; | |
a96d9b2e SDJ |
14970 | } |
14971 | ||
1042e4c0 SS |
14972 | /* Tracepoint-specific operations. */ |
14973 | ||
14974 | /* Set tracepoint count to NUM. */ | |
14975 | static void | |
14976 | set_tracepoint_count (int num) | |
14977 | { | |
14978 | tracepoint_count = num; | |
4fa62494 | 14979 | set_internalvar_integer (lookup_internalvar ("tpnum"), num); |
1042e4c0 SS |
14980 | } |
14981 | ||
70221824 | 14982 | static void |
1042e4c0 SS |
14983 | trace_command (char *arg, int from_tty) |
14984 | { | |
55aa24fb SDJ |
14985 | struct breakpoint_ops *ops; |
14986 | const char *arg_cp = arg; | |
14987 | ||
14988 | if (arg && probe_linespec_to_ops (&arg_cp)) | |
14989 | ops = &tracepoint_probe_breakpoint_ops; | |
14990 | else | |
14991 | ops = &tracepoint_breakpoint_ops; | |
14992 | ||
558a9d82 YQ |
14993 | create_breakpoint (get_current_arch (), |
14994 | arg, | |
14995 | NULL, 0, NULL, 1 /* parse arg */, | |
14996 | 0 /* tempflag */, | |
14997 | bp_tracepoint /* type_wanted */, | |
14998 | 0 /* Ignore count */, | |
14999 | pending_break_support, | |
15000 | ops, | |
15001 | from_tty, | |
15002 | 1 /* enabled */, | |
15003 | 0 /* internal */, 0); | |
1042e4c0 SS |
15004 | } |
15005 | ||
70221824 | 15006 | static void |
7a697b8d SS |
15007 | ftrace_command (char *arg, int from_tty) |
15008 | { | |
558a9d82 YQ |
15009 | create_breakpoint (get_current_arch (), |
15010 | arg, | |
15011 | NULL, 0, NULL, 1 /* parse arg */, | |
15012 | 0 /* tempflag */, | |
15013 | bp_fast_tracepoint /* type_wanted */, | |
15014 | 0 /* Ignore count */, | |
15015 | pending_break_support, | |
15016 | &tracepoint_breakpoint_ops, | |
15017 | from_tty, | |
15018 | 1 /* enabled */, | |
15019 | 0 /* internal */, 0); | |
0fb4aa4b PA |
15020 | } |
15021 | ||
15022 | /* strace command implementation. Creates a static tracepoint. */ | |
15023 | ||
70221824 | 15024 | static void |
0fb4aa4b PA |
15025 | strace_command (char *arg, int from_tty) |
15026 | { | |
983af33b SDJ |
15027 | struct breakpoint_ops *ops; |
15028 | ||
15029 | /* Decide if we are dealing with a static tracepoint marker (`-m'), | |
15030 | or with a normal static tracepoint. */ | |
15031 | if (arg && strncmp (arg, "-m", 2) == 0 && isspace (arg[2])) | |
15032 | ops = &strace_marker_breakpoint_ops; | |
15033 | else | |
15034 | ops = &tracepoint_breakpoint_ops; | |
15035 | ||
558a9d82 YQ |
15036 | create_breakpoint (get_current_arch (), |
15037 | arg, | |
15038 | NULL, 0, NULL, 1 /* parse arg */, | |
15039 | 0 /* tempflag */, | |
15040 | bp_static_tracepoint /* type_wanted */, | |
15041 | 0 /* Ignore count */, | |
15042 | pending_break_support, | |
15043 | ops, | |
15044 | from_tty, | |
15045 | 1 /* enabled */, | |
15046 | 0 /* internal */, 0); | |
7a697b8d SS |
15047 | } |
15048 | ||
409873ef SS |
15049 | /* Set up a fake reader function that gets command lines from a linked |
15050 | list that was acquired during tracepoint uploading. */ | |
15051 | ||
15052 | static struct uploaded_tp *this_utp; | |
3149d8c1 | 15053 | static int next_cmd; |
409873ef SS |
15054 | |
15055 | static char * | |
15056 | read_uploaded_action (void) | |
15057 | { | |
15058 | char *rslt; | |
15059 | ||
3149d8c1 | 15060 | VEC_iterate (char_ptr, this_utp->cmd_strings, next_cmd, rslt); |
409873ef | 15061 | |
3149d8c1 | 15062 | next_cmd++; |
409873ef SS |
15063 | |
15064 | return rslt; | |
15065 | } | |
15066 | ||
00bf0b85 SS |
15067 | /* Given information about a tracepoint as recorded on a target (which |
15068 | can be either a live system or a trace file), attempt to create an | |
15069 | equivalent GDB tracepoint. This is not a reliable process, since | |
15070 | the target does not necessarily have all the information used when | |
15071 | the tracepoint was originally defined. */ | |
15072 | ||
d9b3f62e | 15073 | struct tracepoint * |
00bf0b85 | 15074 | create_tracepoint_from_upload (struct uploaded_tp *utp) |
d5551862 | 15075 | { |
409873ef | 15076 | char *addr_str, small_buf[100]; |
d9b3f62e | 15077 | struct tracepoint *tp; |
fd9b8c24 | 15078 | |
409873ef SS |
15079 | if (utp->at_string) |
15080 | addr_str = utp->at_string; | |
15081 | else | |
15082 | { | |
15083 | /* In the absence of a source location, fall back to raw | |
15084 | address. Since there is no way to confirm that the address | |
15085 | means the same thing as when the trace was started, warn the | |
15086 | user. */ | |
3e43a32a MS |
15087 | warning (_("Uploaded tracepoint %d has no " |
15088 | "source location, using raw address"), | |
409873ef | 15089 | utp->number); |
8c042590 | 15090 | xsnprintf (small_buf, sizeof (small_buf), "*%s", hex_string (utp->addr)); |
409873ef SS |
15091 | addr_str = small_buf; |
15092 | } | |
15093 | ||
15094 | /* There's not much we can do with a sequence of bytecodes. */ | |
15095 | if (utp->cond && !utp->cond_string) | |
3e43a32a MS |
15096 | warning (_("Uploaded tracepoint %d condition " |
15097 | "has no source form, ignoring it"), | |
409873ef | 15098 | utp->number); |
d5551862 | 15099 | |
8cdf0e15 | 15100 | if (!create_breakpoint (get_current_arch (), |
409873ef | 15101 | addr_str, |
e7e0cddf SS |
15102 | utp->cond_string, -1, NULL, |
15103 | 0 /* parse cond/thread */, | |
8cdf0e15 | 15104 | 0 /* tempflag */, |
0fb4aa4b | 15105 | utp->type /* type_wanted */, |
8cdf0e15 VP |
15106 | 0 /* Ignore count */, |
15107 | pending_break_support, | |
348d480f | 15108 | &tracepoint_breakpoint_ops, |
8cdf0e15 | 15109 | 0 /* from_tty */, |
84f4c1fe | 15110 | utp->enabled /* enabled */, |
44f238bb PA |
15111 | 0 /* internal */, |
15112 | CREATE_BREAKPOINT_FLAGS_INSERTED)) | |
fd9b8c24 PA |
15113 | return NULL; |
15114 | ||
409873ef | 15115 | /* Get the tracepoint we just created. */ |
fd9b8c24 PA |
15116 | tp = get_tracepoint (tracepoint_count); |
15117 | gdb_assert (tp != NULL); | |
d5551862 | 15118 | |
00bf0b85 SS |
15119 | if (utp->pass > 0) |
15120 | { | |
8c042590 PM |
15121 | xsnprintf (small_buf, sizeof (small_buf), "%d %d", utp->pass, |
15122 | tp->base.number); | |
00bf0b85 | 15123 | |
409873ef | 15124 | trace_pass_command (small_buf, 0); |
00bf0b85 SS |
15125 | } |
15126 | ||
409873ef SS |
15127 | /* If we have uploaded versions of the original commands, set up a |
15128 | special-purpose "reader" function and call the usual command line | |
15129 | reader, then pass the result to the breakpoint command-setting | |
15130 | function. */ | |
3149d8c1 | 15131 | if (!VEC_empty (char_ptr, utp->cmd_strings)) |
00bf0b85 | 15132 | { |
409873ef | 15133 | struct command_line *cmd_list; |
00bf0b85 | 15134 | |
409873ef | 15135 | this_utp = utp; |
3149d8c1 | 15136 | next_cmd = 0; |
d5551862 | 15137 | |
409873ef SS |
15138 | cmd_list = read_command_lines_1 (read_uploaded_action, 1, NULL, NULL); |
15139 | ||
d9b3f62e | 15140 | breakpoint_set_commands (&tp->base, cmd_list); |
00bf0b85 | 15141 | } |
3149d8c1 SS |
15142 | else if (!VEC_empty (char_ptr, utp->actions) |
15143 | || !VEC_empty (char_ptr, utp->step_actions)) | |
3e43a32a MS |
15144 | warning (_("Uploaded tracepoint %d actions " |
15145 | "have no source form, ignoring them"), | |
409873ef | 15146 | utp->number); |
00bf0b85 | 15147 | |
f196051f SS |
15148 | /* Copy any status information that might be available. */ |
15149 | tp->base.hit_count = utp->hit_count; | |
15150 | tp->traceframe_usage = utp->traceframe_usage; | |
15151 | ||
00bf0b85 | 15152 | return tp; |
d9b3f62e | 15153 | } |
00bf0b85 | 15154 | |
1042e4c0 SS |
15155 | /* Print information on tracepoint number TPNUM_EXP, or all if |
15156 | omitted. */ | |
15157 | ||
15158 | static void | |
e5a67952 | 15159 | tracepoints_info (char *args, int from_tty) |
1042e4c0 | 15160 | { |
79a45e25 | 15161 | struct ui_out *uiout = current_uiout; |
e5a67952 | 15162 | int num_printed; |
1042e4c0 | 15163 | |
e5a67952 | 15164 | num_printed = breakpoint_1 (args, 0, is_tracepoint); |
d77f58be SS |
15165 | |
15166 | if (num_printed == 0) | |
1042e4c0 | 15167 | { |
e5a67952 | 15168 | if (args == NULL || *args == '\0') |
d77f58be SS |
15169 | ui_out_message (uiout, 0, "No tracepoints.\n"); |
15170 | else | |
e5a67952 | 15171 | ui_out_message (uiout, 0, "No tracepoint matching '%s'.\n", args); |
1042e4c0 | 15172 | } |
ad443146 SS |
15173 | |
15174 | default_collect_info (); | |
1042e4c0 SS |
15175 | } |
15176 | ||
4a64f543 | 15177 | /* The 'enable trace' command enables tracepoints. |
1042e4c0 SS |
15178 | Not supported by all targets. */ |
15179 | static void | |
15180 | enable_trace_command (char *args, int from_tty) | |
15181 | { | |
15182 | enable_command (args, from_tty); | |
15183 | } | |
15184 | ||
4a64f543 | 15185 | /* The 'disable trace' command disables tracepoints. |
1042e4c0 SS |
15186 | Not supported by all targets. */ |
15187 | static void | |
15188 | disable_trace_command (char *args, int from_tty) | |
15189 | { | |
15190 | disable_command (args, from_tty); | |
15191 | } | |
15192 | ||
4a64f543 | 15193 | /* Remove a tracepoint (or all if no argument). */ |
1042e4c0 SS |
15194 | static void |
15195 | delete_trace_command (char *arg, int from_tty) | |
15196 | { | |
35df4500 | 15197 | struct breakpoint *b, *b_tmp; |
1042e4c0 SS |
15198 | |
15199 | dont_repeat (); | |
15200 | ||
15201 | if (arg == 0) | |
15202 | { | |
15203 | int breaks_to_delete = 0; | |
15204 | ||
15205 | /* Delete all breakpoints if no argument. | |
15206 | Do not delete internal or call-dummy breakpoints, these | |
4a64f543 MS |
15207 | have to be deleted with an explicit breakpoint number |
15208 | argument. */ | |
1042e4c0 | 15209 | ALL_TRACEPOINTS (b) |
46c6471b | 15210 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 SS |
15211 | { |
15212 | breaks_to_delete = 1; | |
15213 | break; | |
15214 | } | |
1042e4c0 SS |
15215 | |
15216 | /* Ask user only if there are some breakpoints to delete. */ | |
15217 | if (!from_tty | |
15218 | || (breaks_to_delete && query (_("Delete all tracepoints? ")))) | |
15219 | { | |
35df4500 | 15220 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
46c6471b | 15221 | if (is_tracepoint (b) && user_breakpoint_p (b)) |
1042e4c0 | 15222 | delete_breakpoint (b); |
1042e4c0 SS |
15223 | } |
15224 | } | |
15225 | else | |
51be5b68 | 15226 | map_breakpoint_numbers (arg, do_map_delete_breakpoint, NULL); |
1042e4c0 SS |
15227 | } |
15228 | ||
197f0a60 TT |
15229 | /* Helper function for trace_pass_command. */ |
15230 | ||
15231 | static void | |
d9b3f62e | 15232 | trace_pass_set_count (struct tracepoint *tp, int count, int from_tty) |
197f0a60 | 15233 | { |
d9b3f62e | 15234 | tp->pass_count = count; |
6f6484cd | 15235 | observer_notify_breakpoint_modified (&tp->base); |
197f0a60 TT |
15236 | if (from_tty) |
15237 | printf_filtered (_("Setting tracepoint %d's passcount to %d\n"), | |
d9b3f62e | 15238 | tp->base.number, count); |
197f0a60 TT |
15239 | } |
15240 | ||
1042e4c0 SS |
15241 | /* Set passcount for tracepoint. |
15242 | ||
15243 | First command argument is passcount, second is tracepoint number. | |
15244 | If tracepoint number omitted, apply to most recently defined. | |
15245 | Also accepts special argument "all". */ | |
15246 | ||
15247 | static void | |
15248 | trace_pass_command (char *args, int from_tty) | |
15249 | { | |
d9b3f62e | 15250 | struct tracepoint *t1; |
1042e4c0 | 15251 | unsigned int count; |
1042e4c0 SS |
15252 | |
15253 | if (args == 0 || *args == 0) | |
3e43a32a MS |
15254 | error (_("passcount command requires an " |
15255 | "argument (count + optional TP num)")); | |
1042e4c0 | 15256 | |
4a64f543 | 15257 | count = strtoul (args, &args, 10); /* Count comes first, then TP num. */ |
1042e4c0 | 15258 | |
529480d0 | 15259 | args = skip_spaces (args); |
1042e4c0 SS |
15260 | if (*args && strncasecmp (args, "all", 3) == 0) |
15261 | { | |
d9b3f62e PA |
15262 | struct breakpoint *b; |
15263 | ||
1042e4c0 | 15264 | args += 3; /* Skip special argument "all". */ |
1042e4c0 SS |
15265 | if (*args) |
15266 | error (_("Junk at end of arguments.")); | |
1042e4c0 | 15267 | |
d9b3f62e | 15268 | ALL_TRACEPOINTS (b) |
197f0a60 | 15269 | { |
d9b3f62e | 15270 | t1 = (struct tracepoint *) b; |
197f0a60 TT |
15271 | trace_pass_set_count (t1, count, from_tty); |
15272 | } | |
15273 | } | |
15274 | else if (*args == '\0') | |
1042e4c0 | 15275 | { |
197f0a60 | 15276 | t1 = get_tracepoint_by_number (&args, NULL, 1); |
1042e4c0 | 15277 | if (t1) |
197f0a60 TT |
15278 | trace_pass_set_count (t1, count, from_tty); |
15279 | } | |
15280 | else | |
15281 | { | |
15282 | struct get_number_or_range_state state; | |
15283 | ||
15284 | init_number_or_range (&state, args); | |
15285 | while (!state.finished) | |
1042e4c0 | 15286 | { |
197f0a60 TT |
15287 | t1 = get_tracepoint_by_number (&args, &state, 1); |
15288 | if (t1) | |
15289 | trace_pass_set_count (t1, count, from_tty); | |
1042e4c0 SS |
15290 | } |
15291 | } | |
1042e4c0 SS |
15292 | } |
15293 | ||
d9b3f62e | 15294 | struct tracepoint * |
1042e4c0 SS |
15295 | get_tracepoint (int num) |
15296 | { | |
15297 | struct breakpoint *t; | |
15298 | ||
15299 | ALL_TRACEPOINTS (t) | |
15300 | if (t->number == num) | |
d9b3f62e | 15301 | return (struct tracepoint *) t; |
1042e4c0 SS |
15302 | |
15303 | return NULL; | |
15304 | } | |
15305 | ||
d5551862 SS |
15306 | /* Find the tracepoint with the given target-side number (which may be |
15307 | different from the tracepoint number after disconnecting and | |
15308 | reconnecting). */ | |
15309 | ||
d9b3f62e | 15310 | struct tracepoint * |
d5551862 SS |
15311 | get_tracepoint_by_number_on_target (int num) |
15312 | { | |
d9b3f62e | 15313 | struct breakpoint *b; |
d5551862 | 15314 | |
d9b3f62e PA |
15315 | ALL_TRACEPOINTS (b) |
15316 | { | |
15317 | struct tracepoint *t = (struct tracepoint *) b; | |
15318 | ||
15319 | if (t->number_on_target == num) | |
15320 | return t; | |
15321 | } | |
d5551862 SS |
15322 | |
15323 | return NULL; | |
15324 | } | |
15325 | ||
1042e4c0 | 15326 | /* Utility: parse a tracepoint number and look it up in the list. |
197f0a60 TT |
15327 | If STATE is not NULL, use, get_number_or_range_state and ignore ARG. |
15328 | If OPTIONAL_P is true, then if the argument is missing, the most | |
1042e4c0 | 15329 | recent tracepoint (tracepoint_count) is returned. */ |
d9b3f62e | 15330 | struct tracepoint * |
197f0a60 TT |
15331 | get_tracepoint_by_number (char **arg, |
15332 | struct get_number_or_range_state *state, | |
15333 | int optional_p) | |
1042e4c0 | 15334 | { |
1042e4c0 SS |
15335 | struct breakpoint *t; |
15336 | int tpnum; | |
15337 | char *instring = arg == NULL ? NULL : *arg; | |
15338 | ||
197f0a60 TT |
15339 | if (state) |
15340 | { | |
15341 | gdb_assert (!state->finished); | |
15342 | tpnum = get_number_or_range (state); | |
15343 | } | |
15344 | else if (arg == NULL || *arg == NULL || ! **arg) | |
1042e4c0 SS |
15345 | { |
15346 | if (optional_p) | |
15347 | tpnum = tracepoint_count; | |
15348 | else | |
15349 | error_no_arg (_("tracepoint number")); | |
15350 | } | |
15351 | else | |
197f0a60 | 15352 | tpnum = get_number (arg); |
1042e4c0 SS |
15353 | |
15354 | if (tpnum <= 0) | |
15355 | { | |
15356 | if (instring && *instring) | |
15357 | printf_filtered (_("bad tracepoint number at or near '%s'\n"), | |
15358 | instring); | |
15359 | else | |
3e43a32a MS |
15360 | printf_filtered (_("Tracepoint argument missing " |
15361 | "and no previous tracepoint\n")); | |
1042e4c0 SS |
15362 | return NULL; |
15363 | } | |
15364 | ||
15365 | ALL_TRACEPOINTS (t) | |
15366 | if (t->number == tpnum) | |
15367 | { | |
d9b3f62e | 15368 | return (struct tracepoint *) t; |
1042e4c0 SS |
15369 | } |
15370 | ||
1042e4c0 SS |
15371 | printf_unfiltered ("No tracepoint number %d.\n", tpnum); |
15372 | return NULL; | |
15373 | } | |
15374 | ||
d9b3f62e PA |
15375 | void |
15376 | print_recreate_thread (struct breakpoint *b, struct ui_file *fp) | |
15377 | { | |
15378 | if (b->thread != -1) | |
15379 | fprintf_unfiltered (fp, " thread %d", b->thread); | |
15380 | ||
15381 | if (b->task != 0) | |
15382 | fprintf_unfiltered (fp, " task %d", b->task); | |
15383 | ||
15384 | fprintf_unfiltered (fp, "\n"); | |
15385 | } | |
15386 | ||
6149aea9 PA |
15387 | /* Save information on user settable breakpoints (watchpoints, etc) to |
15388 | a new script file named FILENAME. If FILTER is non-NULL, call it | |
15389 | on each breakpoint and only include the ones for which it returns | |
15390 | non-zero. */ | |
15391 | ||
1042e4c0 | 15392 | static void |
6149aea9 PA |
15393 | save_breakpoints (char *filename, int from_tty, |
15394 | int (*filter) (const struct breakpoint *)) | |
1042e4c0 SS |
15395 | { |
15396 | struct breakpoint *tp; | |
6149aea9 | 15397 | int any = 0; |
a7bdde9e | 15398 | char *pathname; |
1042e4c0 | 15399 | struct cleanup *cleanup; |
a7bdde9e | 15400 | struct ui_file *fp; |
6149aea9 | 15401 | int extra_trace_bits = 0; |
1042e4c0 | 15402 | |
6149aea9 PA |
15403 | if (filename == 0 || *filename == 0) |
15404 | error (_("Argument required (file name in which to save)")); | |
1042e4c0 SS |
15405 | |
15406 | /* See if we have anything to save. */ | |
6149aea9 | 15407 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15408 | { |
6149aea9 | 15409 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15410 | if (!user_breakpoint_p (tp)) |
6149aea9 PA |
15411 | continue; |
15412 | ||
15413 | /* If we have a filter, only save the breakpoints it accepts. */ | |
15414 | if (filter && !filter (tp)) | |
15415 | continue; | |
15416 | ||
15417 | any = 1; | |
15418 | ||
15419 | if (is_tracepoint (tp)) | |
15420 | { | |
15421 | extra_trace_bits = 1; | |
15422 | ||
15423 | /* We can stop searching. */ | |
15424 | break; | |
15425 | } | |
1042e4c0 | 15426 | } |
6149aea9 PA |
15427 | |
15428 | if (!any) | |
1042e4c0 | 15429 | { |
6149aea9 | 15430 | warning (_("Nothing to save.")); |
1042e4c0 SS |
15431 | return; |
15432 | } | |
15433 | ||
6149aea9 | 15434 | pathname = tilde_expand (filename); |
1042e4c0 | 15435 | cleanup = make_cleanup (xfree, pathname); |
a7bdde9e | 15436 | fp = gdb_fopen (pathname, "w"); |
059fb39f | 15437 | if (!fp) |
6149aea9 PA |
15438 | error (_("Unable to open file '%s' for saving (%s)"), |
15439 | filename, safe_strerror (errno)); | |
a7bdde9e | 15440 | make_cleanup_ui_file_delete (fp); |
8bf6485c | 15441 | |
6149aea9 PA |
15442 | if (extra_trace_bits) |
15443 | save_trace_state_variables (fp); | |
8bf6485c | 15444 | |
6149aea9 | 15445 | ALL_BREAKPOINTS (tp) |
1042e4c0 | 15446 | { |
6149aea9 | 15447 | /* Skip internal and momentary breakpoints. */ |
09d682a4 | 15448 | if (!user_breakpoint_p (tp)) |
6149aea9 | 15449 | continue; |
8bf6485c | 15450 | |
6149aea9 PA |
15451 | /* If we have a filter, only save the breakpoints it accepts. */ |
15452 | if (filter && !filter (tp)) | |
15453 | continue; | |
15454 | ||
348d480f | 15455 | tp->ops->print_recreate (tp, fp); |
1042e4c0 | 15456 | |
6149aea9 PA |
15457 | /* Note, we can't rely on tp->number for anything, as we can't |
15458 | assume the recreated breakpoint numbers will match. Use $bpnum | |
15459 | instead. */ | |
15460 | ||
15461 | if (tp->cond_string) | |
15462 | fprintf_unfiltered (fp, " condition $bpnum %s\n", tp->cond_string); | |
15463 | ||
15464 | if (tp->ignore_count) | |
15465 | fprintf_unfiltered (fp, " ignore $bpnum %d\n", tp->ignore_count); | |
15466 | ||
2d9442cc | 15467 | if (tp->type != bp_dprintf && tp->commands) |
1042e4c0 | 15468 | { |
a7bdde9e VP |
15469 | volatile struct gdb_exception ex; |
15470 | ||
6149aea9 | 15471 | fprintf_unfiltered (fp, " commands\n"); |
a7bdde9e | 15472 | |
79a45e25 | 15473 | ui_out_redirect (current_uiout, fp); |
14dba4b4 | 15474 | TRY_CATCH (ex, RETURN_MASK_ALL) |
1042e4c0 | 15475 | { |
79a45e25 | 15476 | print_command_lines (current_uiout, tp->commands->commands, 2); |
a7bdde9e | 15477 | } |
79a45e25 | 15478 | ui_out_redirect (current_uiout, NULL); |
1042e4c0 | 15479 | |
a7bdde9e VP |
15480 | if (ex.reason < 0) |
15481 | throw_exception (ex); | |
1042e4c0 | 15482 | |
a7bdde9e | 15483 | fprintf_unfiltered (fp, " end\n"); |
1042e4c0 | 15484 | } |
6149aea9 PA |
15485 | |
15486 | if (tp->enable_state == bp_disabled) | |
15487 | fprintf_unfiltered (fp, "disable\n"); | |
15488 | ||
15489 | /* If this is a multi-location breakpoint, check if the locations | |
15490 | should be individually disabled. Watchpoint locations are | |
15491 | special, and not user visible. */ | |
15492 | if (!is_watchpoint (tp) && tp->loc && tp->loc->next) | |
15493 | { | |
15494 | struct bp_location *loc; | |
15495 | int n = 1; | |
15496 | ||
15497 | for (loc = tp->loc; loc != NULL; loc = loc->next, n++) | |
15498 | if (!loc->enabled) | |
15499 | fprintf_unfiltered (fp, "disable $bpnum.%d\n", n); | |
15500 | } | |
1042e4c0 | 15501 | } |
8bf6485c | 15502 | |
6149aea9 | 15503 | if (extra_trace_bits && *default_collect) |
8bf6485c SS |
15504 | fprintf_unfiltered (fp, "set default-collect %s\n", default_collect); |
15505 | ||
1042e4c0 SS |
15506 | do_cleanups (cleanup); |
15507 | if (from_tty) | |
6149aea9 PA |
15508 | printf_filtered (_("Saved to file '%s'.\n"), filename); |
15509 | } | |
15510 | ||
15511 | /* The `save breakpoints' command. */ | |
15512 | ||
15513 | static void | |
15514 | save_breakpoints_command (char *args, int from_tty) | |
15515 | { | |
15516 | save_breakpoints (args, from_tty, NULL); | |
15517 | } | |
15518 | ||
15519 | /* The `save tracepoints' command. */ | |
15520 | ||
15521 | static void | |
15522 | save_tracepoints_command (char *args, int from_tty) | |
15523 | { | |
15524 | save_breakpoints (args, from_tty, is_tracepoint); | |
1042e4c0 SS |
15525 | } |
15526 | ||
15527 | /* Create a vector of all tracepoints. */ | |
15528 | ||
15529 | VEC(breakpoint_p) * | |
eeae04df | 15530 | all_tracepoints (void) |
1042e4c0 SS |
15531 | { |
15532 | VEC(breakpoint_p) *tp_vec = 0; | |
15533 | struct breakpoint *tp; | |
15534 | ||
15535 | ALL_TRACEPOINTS (tp) | |
15536 | { | |
15537 | VEC_safe_push (breakpoint_p, tp_vec, tp); | |
15538 | } | |
15539 | ||
15540 | return tp_vec; | |
15541 | } | |
15542 | ||
c906108c | 15543 | \f |
4a64f543 MS |
15544 | /* This help string is used for the break, hbreak, tbreak and thbreak |
15545 | commands. It is defined as a macro to prevent duplication. | |
15546 | COMMAND should be a string constant containing the name of the | |
15547 | command. */ | |
31e2b00f | 15548 | #define BREAK_ARGS_HELP(command) \ |
fb7b5af4 SDJ |
15549 | command" [PROBE_MODIFIER] [LOCATION] [thread THREADNUM] [if CONDITION]\n\ |
15550 | PROBE_MODIFIER shall be present if the command is to be placed in a\n\ | |
15551 | probe point. Accepted values are `-probe' (for a generic, automatically\n\ | |
15552 | guessed probe type) or `-probe-stap' (for a SystemTap probe).\n\ | |
31e2b00f AS |
15553 | LOCATION may be a line number, function name, or \"*\" and an address.\n\ |
15554 | If a line number is specified, break at start of code for that line.\n\ | |
15555 | If a function is specified, break at start of code for that function.\n\ | |
15556 | If an address is specified, break at that exact address.\n\ | |
dc10affe PA |
15557 | With no LOCATION, uses current execution address of the selected\n\ |
15558 | stack frame. This is useful for breaking on return to a stack frame.\n\ | |
31e2b00f AS |
15559 | \n\ |
15560 | THREADNUM is the number from \"info threads\".\n\ | |
15561 | CONDITION is a boolean expression.\n\ | |
15562 | \n\ | |
d41c0fc8 PA |
15563 | Multiple breakpoints at one place are permitted, and useful if their\n\ |
15564 | conditions are different.\n\ | |
31e2b00f AS |
15565 | \n\ |
15566 | Do \"help breakpoints\" for info on other commands dealing with breakpoints." | |
15567 | ||
44feb3ce TT |
15568 | /* List of subcommands for "catch". */ |
15569 | static struct cmd_list_element *catch_cmdlist; | |
15570 | ||
15571 | /* List of subcommands for "tcatch". */ | |
15572 | static struct cmd_list_element *tcatch_cmdlist; | |
15573 | ||
9ac4176b | 15574 | void |
44feb3ce TT |
15575 | add_catch_command (char *name, char *docstring, |
15576 | void (*sfunc) (char *args, int from_tty, | |
15577 | struct cmd_list_element *command), | |
625e8578 | 15578 | completer_ftype *completer, |
44feb3ce TT |
15579 | void *user_data_catch, |
15580 | void *user_data_tcatch) | |
15581 | { | |
15582 | struct cmd_list_element *command; | |
15583 | ||
15584 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15585 | &catch_cmdlist); | |
15586 | set_cmd_sfunc (command, sfunc); | |
15587 | set_cmd_context (command, user_data_catch); | |
a96d9b2e | 15588 | set_cmd_completer (command, completer); |
44feb3ce TT |
15589 | |
15590 | command = add_cmd (name, class_breakpoint, NULL, docstring, | |
15591 | &tcatch_cmdlist); | |
15592 | set_cmd_sfunc (command, sfunc); | |
15593 | set_cmd_context (command, user_data_tcatch); | |
a96d9b2e | 15594 | set_cmd_completer (command, completer); |
44feb3ce TT |
15595 | } |
15596 | ||
6c95b8df | 15597 | static void |
a79b8f6e | 15598 | clear_syscall_counts (struct inferior *inf) |
6c95b8df | 15599 | { |
fa3064dd YQ |
15600 | struct catch_syscall_inferior_data *inf_data |
15601 | = get_catch_syscall_inferior_data (inf); | |
15602 | ||
15603 | inf_data->total_syscalls_count = 0; | |
15604 | inf_data->any_syscall_count = 0; | |
15605 | VEC_free (int, inf_data->syscalls_counts); | |
6c95b8df PA |
15606 | } |
15607 | ||
6149aea9 PA |
15608 | static void |
15609 | save_command (char *arg, int from_tty) | |
15610 | { | |
3e43a32a MS |
15611 | printf_unfiltered (_("\"save\" must be followed by " |
15612 | "the name of a save subcommand.\n")); | |
6149aea9 PA |
15613 | help_list (save_cmdlist, "save ", -1, gdb_stdout); |
15614 | } | |
15615 | ||
84f4c1fe PM |
15616 | struct breakpoint * |
15617 | iterate_over_breakpoints (int (*callback) (struct breakpoint *, void *), | |
15618 | void *data) | |
15619 | { | |
35df4500 | 15620 | struct breakpoint *b, *b_tmp; |
84f4c1fe | 15621 | |
35df4500 | 15622 | ALL_BREAKPOINTS_SAFE (b, b_tmp) |
84f4c1fe PM |
15623 | { |
15624 | if ((*callback) (b, data)) | |
15625 | return b; | |
15626 | } | |
15627 | ||
15628 | return NULL; | |
15629 | } | |
15630 | ||
0574c78f GB |
15631 | /* Zero if any of the breakpoint's locations could be a location where |
15632 | functions have been inlined, nonzero otherwise. */ | |
15633 | ||
15634 | static int | |
15635 | is_non_inline_function (struct breakpoint *b) | |
15636 | { | |
15637 | /* The shared library event breakpoint is set on the address of a | |
15638 | non-inline function. */ | |
15639 | if (b->type == bp_shlib_event) | |
15640 | return 1; | |
15641 | ||
15642 | return 0; | |
15643 | } | |
15644 | ||
15645 | /* Nonzero if the specified PC cannot be a location where functions | |
15646 | have been inlined. */ | |
15647 | ||
15648 | int | |
09ac7c10 TT |
15649 | pc_at_non_inline_function (struct address_space *aspace, CORE_ADDR pc, |
15650 | const struct target_waitstatus *ws) | |
0574c78f GB |
15651 | { |
15652 | struct breakpoint *b; | |
15653 | struct bp_location *bl; | |
15654 | ||
15655 | ALL_BREAKPOINTS (b) | |
15656 | { | |
15657 | if (!is_non_inline_function (b)) | |
15658 | continue; | |
15659 | ||
15660 | for (bl = b->loc; bl != NULL; bl = bl->next) | |
15661 | { | |
15662 | if (!bl->shlib_disabled | |
09ac7c10 | 15663 | && bpstat_check_location (bl, aspace, pc, ws)) |
0574c78f GB |
15664 | return 1; |
15665 | } | |
15666 | } | |
15667 | ||
15668 | return 0; | |
15669 | } | |
15670 | ||
2f202fde JK |
15671 | /* Remove any references to OBJFILE which is going to be freed. */ |
15672 | ||
15673 | void | |
15674 | breakpoint_free_objfile (struct objfile *objfile) | |
15675 | { | |
15676 | struct bp_location **locp, *loc; | |
15677 | ||
15678 | ALL_BP_LOCATIONS (loc, locp) | |
15679 | if (loc->symtab != NULL && loc->symtab->objfile == objfile) | |
15680 | loc->symtab = NULL; | |
15681 | } | |
15682 | ||
2060206e PA |
15683 | void |
15684 | initialize_breakpoint_ops (void) | |
15685 | { | |
15686 | static int initialized = 0; | |
15687 | ||
15688 | struct breakpoint_ops *ops; | |
15689 | ||
15690 | if (initialized) | |
15691 | return; | |
15692 | initialized = 1; | |
15693 | ||
15694 | /* The breakpoint_ops structure to be inherit by all kinds of | |
15695 | breakpoints (real breakpoints, i.e., user "break" breakpoints, | |
15696 | internal and momentary breakpoints, etc.). */ | |
15697 | ops = &bkpt_base_breakpoint_ops; | |
15698 | *ops = base_breakpoint_ops; | |
15699 | ops->re_set = bkpt_re_set; | |
15700 | ops->insert_location = bkpt_insert_location; | |
15701 | ops->remove_location = bkpt_remove_location; | |
15702 | ops->breakpoint_hit = bkpt_breakpoint_hit; | |
983af33b SDJ |
15703 | ops->create_sals_from_address = bkpt_create_sals_from_address; |
15704 | ops->create_breakpoints_sal = bkpt_create_breakpoints_sal; | |
15705 | ops->decode_linespec = bkpt_decode_linespec; | |
2060206e PA |
15706 | |
15707 | /* The breakpoint_ops structure to be used in regular breakpoints. */ | |
15708 | ops = &bkpt_breakpoint_ops; | |
15709 | *ops = bkpt_base_breakpoint_ops; | |
15710 | ops->re_set = bkpt_re_set; | |
15711 | ops->resources_needed = bkpt_resources_needed; | |
15712 | ops->print_it = bkpt_print_it; | |
15713 | ops->print_mention = bkpt_print_mention; | |
15714 | ops->print_recreate = bkpt_print_recreate; | |
15715 | ||
15716 | /* Ranged breakpoints. */ | |
15717 | ops = &ranged_breakpoint_ops; | |
15718 | *ops = bkpt_breakpoint_ops; | |
15719 | ops->breakpoint_hit = breakpoint_hit_ranged_breakpoint; | |
15720 | ops->resources_needed = resources_needed_ranged_breakpoint; | |
15721 | ops->print_it = print_it_ranged_breakpoint; | |
15722 | ops->print_one = print_one_ranged_breakpoint; | |
15723 | ops->print_one_detail = print_one_detail_ranged_breakpoint; | |
15724 | ops->print_mention = print_mention_ranged_breakpoint; | |
15725 | ops->print_recreate = print_recreate_ranged_breakpoint; | |
15726 | ||
15727 | /* Internal breakpoints. */ | |
15728 | ops = &internal_breakpoint_ops; | |
15729 | *ops = bkpt_base_breakpoint_ops; | |
15730 | ops->re_set = internal_bkpt_re_set; | |
15731 | ops->check_status = internal_bkpt_check_status; | |
15732 | ops->print_it = internal_bkpt_print_it; | |
15733 | ops->print_mention = internal_bkpt_print_mention; | |
15734 | ||
15735 | /* Momentary breakpoints. */ | |
15736 | ops = &momentary_breakpoint_ops; | |
15737 | *ops = bkpt_base_breakpoint_ops; | |
15738 | ops->re_set = momentary_bkpt_re_set; | |
15739 | ops->check_status = momentary_bkpt_check_status; | |
15740 | ops->print_it = momentary_bkpt_print_it; | |
15741 | ops->print_mention = momentary_bkpt_print_mention; | |
15742 | ||
e2e4d78b JK |
15743 | /* Momentary breakpoints for bp_longjmp and bp_exception. */ |
15744 | ops = &longjmp_breakpoint_ops; | |
15745 | *ops = momentary_breakpoint_ops; | |
15746 | ops->dtor = longjmp_bkpt_dtor; | |
15747 | ||
55aa24fb SDJ |
15748 | /* Probe breakpoints. */ |
15749 | ops = &bkpt_probe_breakpoint_ops; | |
15750 | *ops = bkpt_breakpoint_ops; | |
15751 | ops->insert_location = bkpt_probe_insert_location; | |
15752 | ops->remove_location = bkpt_probe_remove_location; | |
15753 | ops->create_sals_from_address = bkpt_probe_create_sals_from_address; | |
15754 | ops->decode_linespec = bkpt_probe_decode_linespec; | |
15755 | ||
2060206e PA |
15756 | /* Watchpoints. */ |
15757 | ops = &watchpoint_breakpoint_ops; | |
15758 | *ops = base_breakpoint_ops; | |
3a5c3e22 | 15759 | ops->dtor = dtor_watchpoint; |
2060206e PA |
15760 | ops->re_set = re_set_watchpoint; |
15761 | ops->insert_location = insert_watchpoint; | |
15762 | ops->remove_location = remove_watchpoint; | |
15763 | ops->breakpoint_hit = breakpoint_hit_watchpoint; | |
15764 | ops->check_status = check_status_watchpoint; | |
15765 | ops->resources_needed = resources_needed_watchpoint; | |
15766 | ops->works_in_software_mode = works_in_software_mode_watchpoint; | |
15767 | ops->print_it = print_it_watchpoint; | |
15768 | ops->print_mention = print_mention_watchpoint; | |
15769 | ops->print_recreate = print_recreate_watchpoint; | |
427cd150 | 15770 | ops->explains_signal = explains_signal_watchpoint; |
2060206e PA |
15771 | |
15772 | /* Masked watchpoints. */ | |
15773 | ops = &masked_watchpoint_breakpoint_ops; | |
15774 | *ops = watchpoint_breakpoint_ops; | |
15775 | ops->insert_location = insert_masked_watchpoint; | |
15776 | ops->remove_location = remove_masked_watchpoint; | |
15777 | ops->resources_needed = resources_needed_masked_watchpoint; | |
15778 | ops->works_in_software_mode = works_in_software_mode_masked_watchpoint; | |
15779 | ops->print_it = print_it_masked_watchpoint; | |
15780 | ops->print_one_detail = print_one_detail_masked_watchpoint; | |
15781 | ops->print_mention = print_mention_masked_watchpoint; | |
15782 | ops->print_recreate = print_recreate_masked_watchpoint; | |
15783 | ||
15784 | /* Tracepoints. */ | |
15785 | ops = &tracepoint_breakpoint_ops; | |
15786 | *ops = base_breakpoint_ops; | |
15787 | ops->re_set = tracepoint_re_set; | |
15788 | ops->breakpoint_hit = tracepoint_breakpoint_hit; | |
15789 | ops->print_one_detail = tracepoint_print_one_detail; | |
15790 | ops->print_mention = tracepoint_print_mention; | |
15791 | ops->print_recreate = tracepoint_print_recreate; | |
983af33b SDJ |
15792 | ops->create_sals_from_address = tracepoint_create_sals_from_address; |
15793 | ops->create_breakpoints_sal = tracepoint_create_breakpoints_sal; | |
15794 | ops->decode_linespec = tracepoint_decode_linespec; | |
15795 | ||
55aa24fb SDJ |
15796 | /* Probe tracepoints. */ |
15797 | ops = &tracepoint_probe_breakpoint_ops; | |
15798 | *ops = tracepoint_breakpoint_ops; | |
15799 | ops->create_sals_from_address = tracepoint_probe_create_sals_from_address; | |
15800 | ops->decode_linespec = tracepoint_probe_decode_linespec; | |
15801 | ||
983af33b SDJ |
15802 | /* Static tracepoints with marker (`-m'). */ |
15803 | ops = &strace_marker_breakpoint_ops; | |
15804 | *ops = tracepoint_breakpoint_ops; | |
15805 | ops->create_sals_from_address = strace_marker_create_sals_from_address; | |
15806 | ops->create_breakpoints_sal = strace_marker_create_breakpoints_sal; | |
15807 | ops->decode_linespec = strace_marker_decode_linespec; | |
2060206e PA |
15808 | |
15809 | /* Fork catchpoints. */ | |
15810 | ops = &catch_fork_breakpoint_ops; | |
15811 | *ops = base_breakpoint_ops; | |
15812 | ops->insert_location = insert_catch_fork; | |
15813 | ops->remove_location = remove_catch_fork; | |
15814 | ops->breakpoint_hit = breakpoint_hit_catch_fork; | |
15815 | ops->print_it = print_it_catch_fork; | |
15816 | ops->print_one = print_one_catch_fork; | |
15817 | ops->print_mention = print_mention_catch_fork; | |
15818 | ops->print_recreate = print_recreate_catch_fork; | |
15819 | ||
15820 | /* Vfork catchpoints. */ | |
15821 | ops = &catch_vfork_breakpoint_ops; | |
15822 | *ops = base_breakpoint_ops; | |
15823 | ops->insert_location = insert_catch_vfork; | |
15824 | ops->remove_location = remove_catch_vfork; | |
15825 | ops->breakpoint_hit = breakpoint_hit_catch_vfork; | |
15826 | ops->print_it = print_it_catch_vfork; | |
15827 | ops->print_one = print_one_catch_vfork; | |
15828 | ops->print_mention = print_mention_catch_vfork; | |
15829 | ops->print_recreate = print_recreate_catch_vfork; | |
15830 | ||
15831 | /* Exec catchpoints. */ | |
15832 | ops = &catch_exec_breakpoint_ops; | |
15833 | *ops = base_breakpoint_ops; | |
15834 | ops->dtor = dtor_catch_exec; | |
15835 | ops->insert_location = insert_catch_exec; | |
15836 | ops->remove_location = remove_catch_exec; | |
15837 | ops->breakpoint_hit = breakpoint_hit_catch_exec; | |
15838 | ops->print_it = print_it_catch_exec; | |
15839 | ops->print_one = print_one_catch_exec; | |
15840 | ops->print_mention = print_mention_catch_exec; | |
15841 | ops->print_recreate = print_recreate_catch_exec; | |
15842 | ||
15843 | /* Syscall catchpoints. */ | |
15844 | ops = &catch_syscall_breakpoint_ops; | |
15845 | *ops = base_breakpoint_ops; | |
15846 | ops->dtor = dtor_catch_syscall; | |
15847 | ops->insert_location = insert_catch_syscall; | |
15848 | ops->remove_location = remove_catch_syscall; | |
15849 | ops->breakpoint_hit = breakpoint_hit_catch_syscall; | |
15850 | ops->print_it = print_it_catch_syscall; | |
15851 | ops->print_one = print_one_catch_syscall; | |
15852 | ops->print_mention = print_mention_catch_syscall; | |
15853 | ops->print_recreate = print_recreate_catch_syscall; | |
edcc5120 TT |
15854 | |
15855 | /* Solib-related catchpoints. */ | |
15856 | ops = &catch_solib_breakpoint_ops; | |
15857 | *ops = base_breakpoint_ops; | |
15858 | ops->dtor = dtor_catch_solib; | |
15859 | ops->insert_location = insert_catch_solib; | |
15860 | ops->remove_location = remove_catch_solib; | |
15861 | ops->breakpoint_hit = breakpoint_hit_catch_solib; | |
15862 | ops->check_status = check_status_catch_solib; | |
15863 | ops->print_it = print_it_catch_solib; | |
15864 | ops->print_one = print_one_catch_solib; | |
15865 | ops->print_mention = print_mention_catch_solib; | |
15866 | ops->print_recreate = print_recreate_catch_solib; | |
e7e0cddf SS |
15867 | |
15868 | ops = &dprintf_breakpoint_ops; | |
15869 | *ops = bkpt_base_breakpoint_ops; | |
5c2b4418 | 15870 | ops->re_set = dprintf_re_set; |
e7e0cddf SS |
15871 | ops->resources_needed = bkpt_resources_needed; |
15872 | ops->print_it = bkpt_print_it; | |
15873 | ops->print_mention = bkpt_print_mention; | |
2d9442cc | 15874 | ops->print_recreate = dprintf_print_recreate; |
2060206e PA |
15875 | } |
15876 | ||
8bfd80db YQ |
15877 | /* Chain containing all defined "enable breakpoint" subcommands. */ |
15878 | ||
15879 | static struct cmd_list_element *enablebreaklist = NULL; | |
15880 | ||
c906108c | 15881 | void |
fba45db2 | 15882 | _initialize_breakpoint (void) |
c906108c SS |
15883 | { |
15884 | struct cmd_list_element *c; | |
15885 | ||
2060206e PA |
15886 | initialize_breakpoint_ops (); |
15887 | ||
84acb35a | 15888 | observer_attach_solib_unloaded (disable_breakpoints_in_unloaded_shlib); |
6c95b8df | 15889 | observer_attach_inferior_exit (clear_syscall_counts); |
1f3b5d1b | 15890 | observer_attach_memory_changed (invalidate_bp_value_on_memory_change); |
84acb35a | 15891 | |
55aa24fb SDJ |
15892 | breakpoint_objfile_key |
15893 | = register_objfile_data_with_cleanup (NULL, free_breakpoint_probes); | |
17450429 | 15894 | |
fa3064dd | 15895 | catch_syscall_inferior_data |
8e260fc0 TT |
15896 | = register_inferior_data_with_cleanup (NULL, |
15897 | catch_syscall_inferior_data_cleanup); | |
fa3064dd | 15898 | |
c906108c SS |
15899 | breakpoint_chain = 0; |
15900 | /* Don't bother to call set_breakpoint_count. $bpnum isn't useful | |
15901 | before a breakpoint is set. */ | |
15902 | breakpoint_count = 0; | |
15903 | ||
1042e4c0 SS |
15904 | tracepoint_count = 0; |
15905 | ||
1bedd215 AC |
15906 | add_com ("ignore", class_breakpoint, ignore_command, _("\ |
15907 | Set ignore-count of breakpoint number N to COUNT.\n\ | |
15908 | Usage is `ignore N COUNT'.")); | |
c906108c | 15909 | if (xdb_commands) |
c5aa993b | 15910 | add_com_alias ("bc", "ignore", class_breakpoint, 1); |
c906108c | 15911 | |
1bedd215 AC |
15912 | add_com ("commands", class_breakpoint, commands_command, _("\ |
15913 | Set commands to be executed when a breakpoint is hit.\n\ | |
c906108c SS |
15914 | Give breakpoint number as argument after \"commands\".\n\ |
15915 | With no argument, the targeted breakpoint is the last one set.\n\ | |
15916 | The commands themselves follow starting on the next line.\n\ | |
15917 | Type a line containing \"end\" to indicate the end of them.\n\ | |
15918 | Give \"silent\" as the first line to make the breakpoint silent;\n\ | |
1bedd215 | 15919 | then no output is printed when it is hit, except what the commands print.")); |
c906108c | 15920 | |
d55637df | 15921 | c = add_com ("condition", class_breakpoint, condition_command, _("\ |
1bedd215 | 15922 | Specify breakpoint number N to break only if COND is true.\n\ |
c906108c | 15923 | Usage is `condition N COND', where N is an integer and COND is an\n\ |
1bedd215 | 15924 | expression to be evaluated whenever breakpoint N is reached.")); |
d55637df | 15925 | set_cmd_completer (c, condition_completer); |
c906108c | 15926 | |
1bedd215 | 15927 | c = add_com ("tbreak", class_breakpoint, tbreak_command, _("\ |
31e2b00f | 15928 | Set a temporary breakpoint.\n\ |
c906108c SS |
15929 | Like \"break\" except the breakpoint is only temporary,\n\ |
15930 | so it will be deleted when hit. Equivalent to \"break\" followed\n\ | |
31e2b00f AS |
15931 | by using \"enable delete\" on the breakpoint number.\n\ |
15932 | \n" | |
15933 | BREAK_ARGS_HELP ("tbreak"))); | |
5ba2abeb | 15934 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 15935 | |
1bedd215 | 15936 | c = add_com ("hbreak", class_breakpoint, hbreak_command, _("\ |
a3be7890 | 15937 | Set a hardware assisted breakpoint.\n\ |
c906108c | 15938 | Like \"break\" except the breakpoint requires hardware support,\n\ |
31e2b00f AS |
15939 | some target hardware may not have this support.\n\ |
15940 | \n" | |
15941 | BREAK_ARGS_HELP ("hbreak"))); | |
5ba2abeb | 15942 | set_cmd_completer (c, location_completer); |
c906108c | 15943 | |
1bedd215 | 15944 | c = add_com ("thbreak", class_breakpoint, thbreak_command, _("\ |
31e2b00f | 15945 | Set a temporary hardware assisted breakpoint.\n\ |
c906108c | 15946 | Like \"hbreak\" except the breakpoint is only temporary,\n\ |
31e2b00f AS |
15947 | so it will be deleted when hit.\n\ |
15948 | \n" | |
15949 | BREAK_ARGS_HELP ("thbreak"))); | |
5ba2abeb | 15950 | set_cmd_completer (c, location_completer); |
c906108c | 15951 | |
1bedd215 AC |
15952 | add_prefix_cmd ("enable", class_breakpoint, enable_command, _("\ |
15953 | Enable some breakpoints.\n\ | |
c906108c SS |
15954 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15955 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15956 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15957 | With a subcommand you can enable temporarily."), |
c906108c SS |
15958 | &enablelist, "enable ", 1, &cmdlist); |
15959 | if (xdb_commands) | |
1bedd215 AC |
15960 | add_com ("ab", class_breakpoint, enable_command, _("\ |
15961 | Enable some breakpoints.\n\ | |
c906108c SS |
15962 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15963 | With no subcommand, breakpoints are enabled until you command otherwise.\n\ | |
15964 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15965 | With a subcommand you can enable temporarily.")); |
c906108c SS |
15966 | |
15967 | add_com_alias ("en", "enable", class_breakpoint, 1); | |
15968 | ||
84951ab5 | 15969 | add_prefix_cmd ("breakpoints", class_breakpoint, enable_command, _("\ |
1bedd215 | 15970 | Enable some breakpoints.\n\ |
c906108c SS |
15971 | Give breakpoint numbers (separated by spaces) as arguments.\n\ |
15972 | This is used to cancel the effect of the \"disable\" command.\n\ | |
1bedd215 | 15973 | May be abbreviated to simply \"enable\".\n"), |
c5aa993b | 15974 | &enablebreaklist, "enable breakpoints ", 1, &enablelist); |
c906108c | 15975 | |
1a966eab AC |
15976 | add_cmd ("once", no_class, enable_once_command, _("\ |
15977 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15978 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
c906108c SS |
15979 | &enablebreaklist); |
15980 | ||
1a966eab AC |
15981 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15982 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15983 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15984 | &enablebreaklist); |
15985 | ||
816338b5 SS |
15986 | add_cmd ("count", no_class, enable_count_command, _("\ |
15987 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
15988 | If a breakpoint is hit while enabled in this fashion,\n\ | |
15989 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
15990 | &enablebreaklist); | |
15991 | ||
1a966eab AC |
15992 | add_cmd ("delete", no_class, enable_delete_command, _("\ |
15993 | Enable breakpoints and delete when hit. Give breakpoint numbers.\n\ | |
15994 | If a breakpoint is hit while enabled in this fashion, it is deleted."), | |
c906108c SS |
15995 | &enablelist); |
15996 | ||
1a966eab AC |
15997 | add_cmd ("once", no_class, enable_once_command, _("\ |
15998 | Enable breakpoints for one hit. Give breakpoint numbers.\n\ | |
15999 | If a breakpoint is hit while enabled in this fashion, it becomes disabled."), | |
816338b5 SS |
16000 | &enablelist); |
16001 | ||
16002 | add_cmd ("count", no_class, enable_count_command, _("\ | |
16003 | Enable breakpoints for COUNT hits. Give count and then breakpoint numbers.\n\ | |
16004 | If a breakpoint is hit while enabled in this fashion,\n\ | |
16005 | the count is decremented; when it reaches zero, the breakpoint is disabled."), | |
c906108c SS |
16006 | &enablelist); |
16007 | ||
1bedd215 AC |
16008 | add_prefix_cmd ("disable", class_breakpoint, disable_command, _("\ |
16009 | Disable some breakpoints.\n\ | |
c906108c SS |
16010 | Arguments are breakpoint numbers with spaces in between.\n\ |
16011 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16012 | A disabled breakpoint is not forgotten, but has no effect until re-enabled."), |
c906108c SS |
16013 | &disablelist, "disable ", 1, &cmdlist); |
16014 | add_com_alias ("dis", "disable", class_breakpoint, 1); | |
16015 | add_com_alias ("disa", "disable", class_breakpoint, 1); | |
16016 | if (xdb_commands) | |
1bedd215 AC |
16017 | add_com ("sb", class_breakpoint, disable_command, _("\ |
16018 | Disable some breakpoints.\n\ | |
c906108c SS |
16019 | Arguments are breakpoint numbers with spaces in between.\n\ |
16020 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16021 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.")); |
c906108c | 16022 | |
1a966eab AC |
16023 | add_cmd ("breakpoints", class_alias, disable_command, _("\ |
16024 | Disable some breakpoints.\n\ | |
c906108c SS |
16025 | Arguments are breakpoint numbers with spaces in between.\n\ |
16026 | To disable all breakpoints, give no argument.\n\ | |
64b9b334 | 16027 | A disabled breakpoint is not forgotten, but has no effect until re-enabled.\n\ |
1a966eab | 16028 | This command may be abbreviated \"disable\"."), |
c906108c SS |
16029 | &disablelist); |
16030 | ||
1bedd215 AC |
16031 | add_prefix_cmd ("delete", class_breakpoint, delete_command, _("\ |
16032 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16033 | Arguments are breakpoint numbers with spaces in between.\n\ |
16034 | To delete all breakpoints, give no argument.\n\ | |
16035 | \n\ | |
16036 | Also a prefix command for deletion of other GDB objects.\n\ | |
1bedd215 | 16037 | The \"unset\" command is also an alias for \"delete\"."), |
c906108c SS |
16038 | &deletelist, "delete ", 1, &cmdlist); |
16039 | add_com_alias ("d", "delete", class_breakpoint, 1); | |
7f198e01 | 16040 | add_com_alias ("del", "delete", class_breakpoint, 1); |
c906108c | 16041 | if (xdb_commands) |
1bedd215 AC |
16042 | add_com ("db", class_breakpoint, delete_command, _("\ |
16043 | Delete some breakpoints.\n\ | |
c906108c | 16044 | Arguments are breakpoint numbers with spaces in between.\n\ |
1bedd215 | 16045 | To delete all breakpoints, give no argument.\n")); |
c906108c | 16046 | |
1a966eab AC |
16047 | add_cmd ("breakpoints", class_alias, delete_command, _("\ |
16048 | Delete some breakpoints or auto-display expressions.\n\ | |
c906108c SS |
16049 | Arguments are breakpoint numbers with spaces in between.\n\ |
16050 | To delete all breakpoints, give no argument.\n\ | |
1a966eab | 16051 | This command may be abbreviated \"delete\"."), |
c906108c SS |
16052 | &deletelist); |
16053 | ||
1bedd215 AC |
16054 | add_com ("clear", class_breakpoint, clear_command, _("\ |
16055 | Clear breakpoint at specified line or function.\n\ | |
c906108c SS |
16056 | Argument may be line number, function name, or \"*\" and an address.\n\ |
16057 | If line number is specified, all breakpoints in that line are cleared.\n\ | |
16058 | If function is specified, breakpoints at beginning of function are cleared.\n\ | |
1bedd215 AC |
16059 | If an address is specified, breakpoints at that address are cleared.\n\ |
16060 | \n\ | |
16061 | With no argument, clears all breakpoints in the line that the selected frame\n\ | |
c906108c SS |
16062 | is executing in.\n\ |
16063 | \n\ | |
1bedd215 | 16064 | See also the \"delete\" command which clears breakpoints by number.")); |
a6cc4789 | 16065 | add_com_alias ("cl", "clear", class_breakpoint, 1); |
c906108c | 16066 | |
1bedd215 | 16067 | c = add_com ("break", class_breakpoint, break_command, _("\ |
31e2b00f AS |
16068 | Set breakpoint at specified line or function.\n" |
16069 | BREAK_ARGS_HELP ("break"))); | |
5ba2abeb | 16070 | set_cmd_completer (c, location_completer); |
c94fdfd0 | 16071 | |
c906108c SS |
16072 | add_com_alias ("b", "break", class_run, 1); |
16073 | add_com_alias ("br", "break", class_run, 1); | |
16074 | add_com_alias ("bre", "break", class_run, 1); | |
16075 | add_com_alias ("brea", "break", class_run, 1); | |
16076 | ||
7681d515 PM |
16077 | if (xdb_commands) |
16078 | add_com_alias ("ba", "break", class_breakpoint, 1); | |
c906108c SS |
16079 | |
16080 | if (dbx_commands) | |
16081 | { | |
1bedd215 AC |
16082 | add_abbrev_prefix_cmd ("stop", class_breakpoint, stop_command, _("\ |
16083 | Break in function/address or break at a line in the current file."), | |
c5aa993b JM |
16084 | &stoplist, "stop ", 1, &cmdlist); |
16085 | add_cmd ("in", class_breakpoint, stopin_command, | |
1a966eab | 16086 | _("Break in function or address."), &stoplist); |
c5aa993b | 16087 | add_cmd ("at", class_breakpoint, stopat_command, |
1a966eab | 16088 | _("Break at a line in the current file."), &stoplist); |
1bedd215 AC |
16089 | add_com ("status", class_info, breakpoints_info, _("\ |
16090 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16091 | The \"Type\" column indicates one of:\n\ |
16092 | \tbreakpoint - normal breakpoint\n\ | |
16093 | \twatchpoint - watchpoint\n\ | |
16094 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16095 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16096 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16097 | address and file/line number respectively.\n\ |
16098 | \n\ | |
16099 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16100 | are set to the address of the last breakpoint listed unless the command\n\ |
16101 | is prefixed with \"server \".\n\n\ | |
c906108c | 16102 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16103 | breakpoint set.")); |
c906108c SS |
16104 | } |
16105 | ||
1bedd215 | 16106 | add_info ("breakpoints", breakpoints_info, _("\ |
e5a67952 | 16107 | Status of specified breakpoints (all user-settable breakpoints if no argument).\n\ |
c906108c SS |
16108 | The \"Type\" column indicates one of:\n\ |
16109 | \tbreakpoint - normal breakpoint\n\ | |
16110 | \twatchpoint - watchpoint\n\ | |
16111 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16112 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16113 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16114 | address and file/line number respectively.\n\ |
16115 | \n\ | |
16116 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16117 | are set to the address of the last breakpoint listed unless the command\n\ |
16118 | is prefixed with \"server \".\n\n\ | |
c906108c | 16119 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16120 | breakpoint set.")); |
c906108c | 16121 | |
6b04bdb7 MS |
16122 | add_info_alias ("b", "breakpoints", 1); |
16123 | ||
c906108c | 16124 | if (xdb_commands) |
1bedd215 AC |
16125 | add_com ("lb", class_breakpoint, breakpoints_info, _("\ |
16126 | Status of user-settable breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16127 | The \"Type\" column indicates one of:\n\ |
16128 | \tbreakpoint - normal breakpoint\n\ | |
16129 | \twatchpoint - watchpoint\n\ | |
16130 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
16131 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ | |
16132 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1bedd215 AC |
16133 | address and file/line number respectively.\n\ |
16134 | \n\ | |
16135 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16136 | are set to the address of the last breakpoint listed unless the command\n\ |
16137 | is prefixed with \"server \".\n\n\ | |
c906108c | 16138 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1bedd215 | 16139 | breakpoint set.")); |
c906108c | 16140 | |
1a966eab AC |
16141 | add_cmd ("breakpoints", class_maintenance, maintenance_info_breakpoints, _("\ |
16142 | Status of all breakpoints, or breakpoint number NUMBER.\n\ | |
c906108c SS |
16143 | The \"Type\" column indicates one of:\n\ |
16144 | \tbreakpoint - normal breakpoint\n\ | |
16145 | \twatchpoint - watchpoint\n\ | |
16146 | \tlongjmp - internal breakpoint used to step through longjmp()\n\ | |
16147 | \tlongjmp resume - internal breakpoint at the target of longjmp()\n\ | |
16148 | \tuntil - internal breakpoint used by the \"until\" command\n\ | |
1a966eab AC |
16149 | \tfinish - internal breakpoint used by the \"finish\" command\n\ |
16150 | The \"Disp\" column contains one of \"keep\", \"del\", or \"dis\" to indicate\n\ | |
c906108c SS |
16151 | the disposition of the breakpoint after it gets hit. \"dis\" means that the\n\ |
16152 | breakpoint will be disabled. The \"Address\" and \"What\" columns indicate the\n\ | |
1a966eab AC |
16153 | address and file/line number respectively.\n\ |
16154 | \n\ | |
16155 | Convenience variable \"$_\" and default examine address for \"x\"\n\ | |
d1aa2f50 NR |
16156 | are set to the address of the last breakpoint listed unless the command\n\ |
16157 | is prefixed with \"server \".\n\n\ | |
c906108c | 16158 | Convenience variable \"$bpnum\" contains the number of the last\n\ |
1a966eab | 16159 | breakpoint set."), |
c906108c SS |
16160 | &maintenanceinfolist); |
16161 | ||
44feb3ce TT |
16162 | add_prefix_cmd ("catch", class_breakpoint, catch_command, _("\ |
16163 | Set catchpoints to catch events."), | |
16164 | &catch_cmdlist, "catch ", | |
16165 | 0/*allow-unknown*/, &cmdlist); | |
16166 | ||
16167 | add_prefix_cmd ("tcatch", class_breakpoint, tcatch_command, _("\ | |
16168 | Set temporary catchpoints to catch events."), | |
16169 | &tcatch_cmdlist, "tcatch ", | |
16170 | 0/*allow-unknown*/, &cmdlist); | |
16171 | ||
44feb3ce TT |
16172 | add_catch_command ("fork", _("Catch calls to fork."), |
16173 | catch_fork_command_1, | |
a96d9b2e | 16174 | NULL, |
44feb3ce TT |
16175 | (void *) (uintptr_t) catch_fork_permanent, |
16176 | (void *) (uintptr_t) catch_fork_temporary); | |
16177 | add_catch_command ("vfork", _("Catch calls to vfork."), | |
16178 | catch_fork_command_1, | |
a96d9b2e | 16179 | NULL, |
44feb3ce TT |
16180 | (void *) (uintptr_t) catch_vfork_permanent, |
16181 | (void *) (uintptr_t) catch_vfork_temporary); | |
16182 | add_catch_command ("exec", _("Catch calls to exec."), | |
16183 | catch_exec_command_1, | |
a96d9b2e SDJ |
16184 | NULL, |
16185 | CATCH_PERMANENT, | |
16186 | CATCH_TEMPORARY); | |
edcc5120 TT |
16187 | add_catch_command ("load", _("Catch loads of shared libraries.\n\ |
16188 | Usage: catch load [REGEX]\n\ | |
16189 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16190 | catch_load_command_1, | |
16191 | NULL, | |
16192 | CATCH_PERMANENT, | |
16193 | CATCH_TEMPORARY); | |
16194 | add_catch_command ("unload", _("Catch unloads of shared libraries.\n\ | |
16195 | Usage: catch unload [REGEX]\n\ | |
16196 | If REGEX is given, only stop for libraries matching the regular expression."), | |
16197 | catch_unload_command_1, | |
16198 | NULL, | |
16199 | CATCH_PERMANENT, | |
16200 | CATCH_TEMPORARY); | |
a96d9b2e SDJ |
16201 | add_catch_command ("syscall", _("\ |
16202 | Catch system calls by their names and/or numbers.\n\ | |
16203 | Arguments say which system calls to catch. If no arguments\n\ | |
16204 | are given, every system call will be caught.\n\ | |
16205 | Arguments, if given, should be one or more system call names\n\ | |
16206 | (if your system supports that), or system call numbers."), | |
16207 | catch_syscall_command_1, | |
16208 | catch_syscall_completer, | |
44feb3ce TT |
16209 | CATCH_PERMANENT, |
16210 | CATCH_TEMPORARY); | |
c5aa993b | 16211 | |
1bedd215 AC |
16212 | c = add_com ("watch", class_breakpoint, watch_command, _("\ |
16213 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16214 | Usage: watch [-l|-location] EXPRESSION\n\ |
c906108c | 16215 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16216 | an expression changes.\n\ |
16217 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16218 | the memory to which it refers.")); | |
65d12d83 | 16219 | set_cmd_completer (c, expression_completer); |
c906108c | 16220 | |
1bedd215 AC |
16221 | c = add_com ("rwatch", class_breakpoint, rwatch_command, _("\ |
16222 | Set a read watchpoint for an expression.\n\ | |
06a64a0b | 16223 | Usage: rwatch [-l|-location] EXPRESSION\n\ |
c906108c | 16224 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16225 | an expression is read.\n\ |
16226 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16227 | the memory to which it refers.")); | |
65d12d83 | 16228 | set_cmd_completer (c, expression_completer); |
c906108c | 16229 | |
1bedd215 AC |
16230 | c = add_com ("awatch", class_breakpoint, awatch_command, _("\ |
16231 | Set a watchpoint for an expression.\n\ | |
06a64a0b | 16232 | Usage: awatch [-l|-location] EXPRESSION\n\ |
c906108c | 16233 | A watchpoint stops execution of your program whenever the value of\n\ |
06a64a0b TT |
16234 | an expression is either read or written.\n\ |
16235 | If -l or -location is given, this evaluates EXPRESSION and watches\n\ | |
16236 | the memory to which it refers.")); | |
65d12d83 | 16237 | set_cmd_completer (c, expression_completer); |
c906108c | 16238 | |
d77f58be | 16239 | add_info ("watchpoints", watchpoints_info, _("\ |
e5a67952 | 16240 | Status of specified watchpoints (all watchpoints if no argument).")); |
c906108c | 16241 | |
920d2a44 AC |
16242 | /* XXX: cagney/2005-02-23: This should be a boolean, and should |
16243 | respond to changes - contrary to the description. */ | |
85c07804 AC |
16244 | add_setshow_zinteger_cmd ("can-use-hw-watchpoints", class_support, |
16245 | &can_use_hw_watchpoints, _("\ | |
16246 | Set debugger's willingness to use watchpoint hardware."), _("\ | |
16247 | Show debugger's willingness to use watchpoint hardware."), _("\ | |
c906108c SS |
16248 | If zero, gdb will not use hardware for new watchpoints, even if\n\ |
16249 | such is available. (However, any hardware watchpoints that were\n\ | |
16250 | created before setting this to nonzero, will continue to use watchpoint\n\ | |
85c07804 AC |
16251 | hardware.)"), |
16252 | NULL, | |
920d2a44 | 16253 | show_can_use_hw_watchpoints, |
85c07804 | 16254 | &setlist, &showlist); |
c906108c SS |
16255 | |
16256 | can_use_hw_watchpoints = 1; | |
fa8d40ab | 16257 | |
1042e4c0 SS |
16258 | /* Tracepoint manipulation commands. */ |
16259 | ||
16260 | c = add_com ("trace", class_breakpoint, trace_command, _("\ | |
16261 | Set a tracepoint at specified line or function.\n\ | |
16262 | \n" | |
16263 | BREAK_ARGS_HELP ("trace") "\n\ | |
16264 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16265 | set_cmd_completer (c, location_completer); | |
16266 | ||
16267 | add_com_alias ("tp", "trace", class_alias, 0); | |
16268 | add_com_alias ("tr", "trace", class_alias, 1); | |
16269 | add_com_alias ("tra", "trace", class_alias, 1); | |
16270 | add_com_alias ("trac", "trace", class_alias, 1); | |
16271 | ||
7a697b8d SS |
16272 | c = add_com ("ftrace", class_breakpoint, ftrace_command, _("\ |
16273 | Set a fast tracepoint at specified line or function.\n\ | |
16274 | \n" | |
16275 | BREAK_ARGS_HELP ("ftrace") "\n\ | |
16276 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16277 | set_cmd_completer (c, location_completer); | |
16278 | ||
0fb4aa4b PA |
16279 | c = add_com ("strace", class_breakpoint, strace_command, _("\ |
16280 | Set a static tracepoint at specified line, function or marker.\n\ | |
16281 | \n\ | |
16282 | strace [LOCATION] [if CONDITION]\n\ | |
16283 | LOCATION may be a line number, function name, \"*\" and an address,\n\ | |
16284 | or -m MARKER_ID.\n\ | |
16285 | If a line number is specified, probe the marker at start of code\n\ | |
16286 | for that line. If a function is specified, probe the marker at start\n\ | |
16287 | of code for that function. If an address is specified, probe the marker\n\ | |
16288 | at that exact address. If a marker id is specified, probe the marker\n\ | |
16289 | with that name. With no LOCATION, uses current execution address of\n\ | |
16290 | the selected stack frame.\n\ | |
16291 | Static tracepoints accept an extra collect action -- ``collect $_sdata''.\n\ | |
16292 | This collects arbitrary user data passed in the probe point call to the\n\ | |
16293 | tracing library. You can inspect it when analyzing the trace buffer,\n\ | |
16294 | by printing the $_sdata variable like any other convenience variable.\n\ | |
16295 | \n\ | |
16296 | CONDITION is a boolean expression.\n\ | |
16297 | \n\ | |
d41c0fc8 PA |
16298 | Multiple tracepoints at one place are permitted, and useful if their\n\ |
16299 | conditions are different.\n\ | |
0fb4aa4b PA |
16300 | \n\ |
16301 | Do \"help breakpoints\" for info on other commands dealing with breakpoints.\n\ | |
16302 | Do \"help tracepoints\" for info on other tracepoint commands.")); | |
16303 | set_cmd_completer (c, location_completer); | |
16304 | ||
1042e4c0 | 16305 | add_info ("tracepoints", tracepoints_info, _("\ |
e5a67952 | 16306 | Status of specified tracepoints (all tracepoints if no argument).\n\ |
1042e4c0 SS |
16307 | Convenience variable \"$tpnum\" contains the number of the\n\ |
16308 | last tracepoint set.")); | |
16309 | ||
16310 | add_info_alias ("tp", "tracepoints", 1); | |
16311 | ||
16312 | add_cmd ("tracepoints", class_trace, delete_trace_command, _("\ | |
16313 | Delete specified tracepoints.\n\ | |
16314 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16315 | No argument means delete all tracepoints."), | |
16316 | &deletelist); | |
7e20dfcd | 16317 | add_alias_cmd ("tr", "tracepoints", class_trace, 1, &deletelist); |
1042e4c0 SS |
16318 | |
16319 | c = add_cmd ("tracepoints", class_trace, disable_trace_command, _("\ | |
16320 | Disable specified tracepoints.\n\ | |
16321 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16322 | No argument means disable all tracepoints."), | |
16323 | &disablelist); | |
16324 | deprecate_cmd (c, "disable"); | |
16325 | ||
16326 | c = add_cmd ("tracepoints", class_trace, enable_trace_command, _("\ | |
16327 | Enable specified tracepoints.\n\ | |
16328 | Arguments are tracepoint numbers, separated by spaces.\n\ | |
16329 | No argument means enable all tracepoints."), | |
16330 | &enablelist); | |
16331 | deprecate_cmd (c, "enable"); | |
16332 | ||
16333 | add_com ("passcount", class_trace, trace_pass_command, _("\ | |
16334 | Set the passcount for a tracepoint.\n\ | |
16335 | The trace will end when the tracepoint has been passed 'count' times.\n\ | |
16336 | Usage: passcount COUNT TPNUM, where TPNUM may also be \"all\";\n\ | |
16337 | if TPNUM is omitted, passcount refers to the last tracepoint defined.")); | |
16338 | ||
6149aea9 PA |
16339 | add_prefix_cmd ("save", class_breakpoint, save_command, |
16340 | _("Save breakpoint definitions as a script."), | |
16341 | &save_cmdlist, "save ", | |
16342 | 0/*allow-unknown*/, &cmdlist); | |
16343 | ||
16344 | c = add_cmd ("breakpoints", class_breakpoint, save_breakpoints_command, _("\ | |
16345 | Save current breakpoint definitions as a script.\n\ | |
cce7e648 | 16346 | This includes all types of breakpoints (breakpoints, watchpoints,\n\ |
6149aea9 PA |
16347 | catchpoints, tracepoints). Use the 'source' command in another debug\n\ |
16348 | session to restore them."), | |
16349 | &save_cmdlist); | |
16350 | set_cmd_completer (c, filename_completer); | |
16351 | ||
16352 | c = add_cmd ("tracepoints", class_trace, save_tracepoints_command, _("\ | |
1042e4c0 | 16353 | Save current tracepoint definitions as a script.\n\ |
6149aea9 PA |
16354 | Use the 'source' command in another debug session to restore them."), |
16355 | &save_cmdlist); | |
1042e4c0 SS |
16356 | set_cmd_completer (c, filename_completer); |
16357 | ||
6149aea9 PA |
16358 | c = add_com_alias ("save-tracepoints", "save tracepoints", class_trace, 0); |
16359 | deprecate_cmd (c, "save tracepoints"); | |
16360 | ||
1bedd215 | 16361 | add_prefix_cmd ("breakpoint", class_maintenance, set_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_set_cmdlist, "set breakpoint ", |
16366 | 0/*allow-unknown*/, &setlist); | |
1bedd215 | 16367 | add_prefix_cmd ("breakpoint", class_maintenance, show_breakpoint_cmd, _("\ |
fa8d40ab JJ |
16368 | Breakpoint specific settings\n\ |
16369 | Configure various breakpoint-specific variables such as\n\ | |
1bedd215 | 16370 | pending breakpoint behavior"), |
fa8d40ab JJ |
16371 | &breakpoint_show_cmdlist, "show breakpoint ", |
16372 | 0/*allow-unknown*/, &showlist); | |
16373 | ||
7915a72c AC |
16374 | add_setshow_auto_boolean_cmd ("pending", no_class, |
16375 | &pending_break_support, _("\ | |
16376 | Set debugger's behavior regarding pending breakpoints."), _("\ | |
16377 | Show debugger's behavior regarding pending breakpoints."), _("\ | |
6e1d7d6c AC |
16378 | If on, an unrecognized breakpoint location will cause gdb to create a\n\ |
16379 | pending breakpoint. If off, an unrecognized breakpoint location results in\n\ | |
16380 | an error. If auto, an unrecognized breakpoint location results in a\n\ | |
7915a72c | 16381 | user-query to see if a pending breakpoint should be created."), |
2c5b56ce | 16382 | NULL, |
920d2a44 | 16383 | show_pending_break_support, |
6e1d7d6c AC |
16384 | &breakpoint_set_cmdlist, |
16385 | &breakpoint_show_cmdlist); | |
fa8d40ab JJ |
16386 | |
16387 | pending_break_support = AUTO_BOOLEAN_AUTO; | |
765dc015 VP |
16388 | |
16389 | add_setshow_boolean_cmd ("auto-hw", no_class, | |
16390 | &automatic_hardware_breakpoints, _("\ | |
16391 | Set automatic usage of hardware breakpoints."), _("\ | |
16392 | Show automatic usage of hardware breakpoints."), _("\ | |
16393 | If set, the debugger will automatically use hardware breakpoints for\n\ | |
16394 | breakpoints set with \"break\" but falling in read-only memory. If not set,\n\ | |
16395 | a warning will be emitted for such breakpoints."), | |
16396 | NULL, | |
16397 | show_automatic_hardware_breakpoints, | |
16398 | &breakpoint_set_cmdlist, | |
16399 | &breakpoint_show_cmdlist); | |
74960c60 | 16400 | |
72d0e2c5 YQ |
16401 | add_setshow_auto_boolean_cmd ("always-inserted", class_support, |
16402 | &always_inserted_mode, _("\ | |
74960c60 VP |
16403 | Set mode for inserting breakpoints."), _("\ |
16404 | Show mode for inserting breakpoints."), _("\ | |
33e5cbd6 PA |
16405 | When this mode is off, breakpoints are inserted in inferior when it is\n\ |
16406 | resumed, and removed when execution stops. When this mode is on,\n\ | |
16407 | breakpoints are inserted immediately and removed only when the user\n\ | |
16408 | deletes the breakpoint. When this mode is auto (which is the default),\n\ | |
16409 | the behaviour depends on the non-stop setting (see help set non-stop).\n\ | |
16410 | In this case, if gdb is controlling the inferior in non-stop mode, gdb\n\ | |
16411 | behaves as if always-inserted mode is on; if gdb is controlling the\n\ | |
16412 | inferior in all-stop mode, gdb behaves as if always-inserted mode is off."), | |
72d0e2c5 YQ |
16413 | NULL, |
16414 | &show_always_inserted_mode, | |
16415 | &breakpoint_set_cmdlist, | |
16416 | &breakpoint_show_cmdlist); | |
f1310107 | 16417 | |
b775012e LM |
16418 | add_setshow_enum_cmd ("condition-evaluation", class_breakpoint, |
16419 | condition_evaluation_enums, | |
16420 | &condition_evaluation_mode_1, _("\ | |
16421 | Set mode of breakpoint condition evaluation."), _("\ | |
16422 | Show mode of breakpoint condition evaluation."), _("\ | |
d1cda5d9 | 16423 | When this is set to \"host\", breakpoint conditions will be\n\ |
b775012e LM |
16424 | evaluated on the host's side by GDB. When it is set to \"target\",\n\ |
16425 | breakpoint conditions will be downloaded to the target (if the target\n\ | |
16426 | supports such feature) and conditions will be evaluated on the target's side.\n\ | |
16427 | If this is set to \"auto\" (default), this will be automatically set to\n\ | |
16428 | \"target\" if it supports condition evaluation, otherwise it will\n\ | |
16429 | be set to \"gdb\""), | |
16430 | &set_condition_evaluation_mode, | |
16431 | &show_condition_evaluation_mode, | |
16432 | &breakpoint_set_cmdlist, | |
16433 | &breakpoint_show_cmdlist); | |
16434 | ||
f1310107 TJB |
16435 | add_com ("break-range", class_breakpoint, break_range_command, _("\ |
16436 | Set a breakpoint for an address range.\n\ | |
16437 | break-range START-LOCATION, END-LOCATION\n\ | |
16438 | where START-LOCATION and END-LOCATION can be one of the following:\n\ | |
16439 | LINENUM, for that line in the current file,\n\ | |
16440 | FILE:LINENUM, for that line in that file,\n\ | |
16441 | +OFFSET, for that number of lines after the current line\n\ | |
16442 | or the start of the range\n\ | |
16443 | FUNCTION, for the first line in that function,\n\ | |
16444 | FILE:FUNCTION, to distinguish among like-named static functions.\n\ | |
16445 | *ADDRESS, for the instruction at that address.\n\ | |
16446 | \n\ | |
16447 | The breakpoint will stop execution of the inferior whenever it executes\n\ | |
16448 | an instruction at any address within the [START-LOCATION, END-LOCATION]\n\ | |
16449 | range (including START-LOCATION and END-LOCATION).")); | |
16450 | ||
e7e0cddf SS |
16451 | c = add_com ("dprintf", class_breakpoint, dprintf_command, _("\ |
16452 | Set a dynamic printf at specified line or function.\n\ | |
16453 | dprintf location,format string,arg1,arg2,...\n\ | |
16454 | location may be a line number, function name, or \"*\" and an address.\n\ | |
16455 | If a line number is specified, break at start of code for that line.\n\ | |
0e4777df | 16456 | If a function is specified, break at start of code for that function.")); |
e7e0cddf SS |
16457 | set_cmd_completer (c, location_completer); |
16458 | ||
16459 | add_setshow_enum_cmd ("dprintf-style", class_support, | |
16460 | dprintf_style_enums, &dprintf_style, _("\ | |
16461 | Set the style of usage for dynamic printf."), _("\ | |
16462 | Show the style of usage for dynamic printf."), _("\ | |
16463 | This setting chooses how GDB will do a dynamic printf.\n\ | |
16464 | If the value is \"gdb\", then the printing is done by GDB to its own\n\ | |
16465 | console, as with the \"printf\" command.\n\ | |
16466 | If the value is \"call\", the print is done by calling a function in your\n\ | |
16467 | program; by default printf(), but you can choose a different function or\n\ | |
16468 | output stream by setting dprintf-function and dprintf-channel."), | |
16469 | update_dprintf_commands, NULL, | |
16470 | &setlist, &showlist); | |
16471 | ||
16472 | dprintf_function = xstrdup ("printf"); | |
16473 | add_setshow_string_cmd ("dprintf-function", class_support, | |
16474 | &dprintf_function, _("\ | |
16475 | Set the function to use for dynamic printf"), _("\ | |
16476 | Show the function to use for dynamic printf"), NULL, | |
16477 | update_dprintf_commands, NULL, | |
16478 | &setlist, &showlist); | |
16479 | ||
16480 | dprintf_channel = xstrdup (""); | |
16481 | add_setshow_string_cmd ("dprintf-channel", class_support, | |
16482 | &dprintf_channel, _("\ | |
16483 | Set the channel to use for dynamic printf"), _("\ | |
16484 | Show the channel to use for dynamic printf"), NULL, | |
16485 | update_dprintf_commands, NULL, | |
16486 | &setlist, &showlist); | |
16487 | ||
d3ce09f5 SS |
16488 | add_setshow_boolean_cmd ("disconnected-dprintf", no_class, |
16489 | &disconnected_dprintf, _("\ | |
16490 | Set whether dprintf continues after GDB disconnects."), _("\ | |
16491 | Show whether dprintf continues after GDB disconnects."), _("\ | |
16492 | Use this to let dprintf commands continue to hit and produce output\n\ | |
16493 | even if GDB disconnects or detaches from the target."), | |
16494 | NULL, | |
16495 | NULL, | |
16496 | &setlist, &showlist); | |
16497 | ||
16498 | add_com ("agent-printf", class_vars, agent_printf_command, _("\ | |
16499 | agent-printf \"printf format string\", arg1, arg2, arg3, ..., argn\n\ | |
16500 | (target agent only) This is useful for formatted output in user-defined commands.")); | |
16501 | ||
765dc015 | 16502 | automatic_hardware_breakpoints = 1; |
f3b1572e PA |
16503 | |
16504 | observer_attach_about_to_proceed (breakpoint_about_to_proceed); | |
c906108c | 16505 | } |